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)); | |
1819 | if (p == NULL) | |
1820 | /* This is the first thing in the chain. */ | |
1821 | retval = tmp; | |
1822 | else | |
1823 | p->next = tmp; | |
1824 | p = tmp; | |
1825 | } | |
1826 | p->next = NULL; | |
1827 | return retval; | |
1828 | } | |
1829 | ||
1830 | /* Find the bpstat associated with this breakpoint */ | |
1831 | ||
1832 | bpstat | |
fba45db2 | 1833 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1834 | { |
c5aa993b JM |
1835 | if (bsp == NULL) |
1836 | return NULL; | |
c906108c | 1837 | |
c5aa993b JM |
1838 | for (; bsp != NULL; bsp = bsp->next) |
1839 | { | |
1840 | if (bsp->breakpoint_at == breakpoint) | |
1841 | return bsp; | |
1842 | } | |
c906108c SS |
1843 | return NULL; |
1844 | } | |
1845 | ||
1846 | /* Find a step_resume breakpoint associated with this bpstat. | |
1847 | (If there are multiple step_resume bp's on the list, this function | |
1848 | will arbitrarily pick one.) | |
1849 | ||
1850 | It is an error to use this function if BPSTAT doesn't contain a | |
1851 | step_resume breakpoint. | |
1852 | ||
1853 | See wait_for_inferior's use of this function. */ | |
1854 | struct breakpoint * | |
fba45db2 | 1855 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1856 | { |
8601f500 MS |
1857 | int current_thread; |
1858 | ||
c906108c SS |
1859 | if (bsp == NULL) |
1860 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1861 | ||
8601f500 MS |
1862 | current_thread = pid_to_thread_id (inferior_ptid); |
1863 | ||
c906108c SS |
1864 | for (; bsp != NULL; bsp = bsp->next) |
1865 | { | |
1866 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1867 | (bsp->breakpoint_at->type == bp_step_resume) && |
1868 | (bsp->breakpoint_at->thread == current_thread || | |
1869 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1870 | return bsp->breakpoint_at; |
c906108c SS |
1871 | } |
1872 | ||
1873 | error ("Internal error (no step_resume breakpoint found)"); | |
1874 | } | |
1875 | ||
1876 | ||
1877 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1878 | at. *BSP upon return is a bpstat which points to the remaining | |
1879 | breakpoints stopped at (but which is not guaranteed to be good for | |
1880 | anything but further calls to bpstat_num). | |
1881 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1882 | ||
1883 | int | |
fba45db2 | 1884 | bpstat_num (bpstat *bsp) |
c906108c SS |
1885 | { |
1886 | struct breakpoint *b; | |
1887 | ||
1888 | if ((*bsp) == NULL) | |
1889 | return 0; /* No more breakpoint values */ | |
1890 | else | |
1891 | { | |
1892 | b = (*bsp)->breakpoint_at; | |
1893 | *bsp = (*bsp)->next; | |
1894 | if (b == NULL) | |
1895 | return -1; /* breakpoint that's been deleted since */ | |
1896 | else | |
c5aa993b | 1897 | return b->number; /* We have its number */ |
c906108c SS |
1898 | } |
1899 | } | |
1900 | ||
1901 | /* Modify BS so that the actions will not be performed. */ | |
1902 | ||
1903 | void | |
fba45db2 | 1904 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1905 | { |
1906 | for (; bs != NULL; bs = bs->next) | |
1907 | { | |
c2b8ed2c | 1908 | free_command_lines (&bs->commands); |
c906108c SS |
1909 | if (bs->old_val != NULL) |
1910 | { | |
1911 | value_free (bs->old_val); | |
1912 | bs->old_val = NULL; | |
1913 | } | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1918 | /* ARGSUSED */ | |
1919 | static void | |
4efb68b1 | 1920 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1921 | { |
1922 | executing_breakpoint_commands = 0; | |
1923 | } | |
1924 | ||
1925 | /* Execute all the commands associated with all the breakpoints at this | |
1926 | location. Any of these commands could cause the process to proceed | |
1927 | beyond this point, etc. We look out for such changes by checking | |
1928 | the global "breakpoint_proceeded" after each command. */ | |
1929 | ||
1930 | void | |
fba45db2 | 1931 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1932 | { |
1933 | bpstat bs; | |
1934 | struct cleanup *old_chain; | |
1935 | struct command_line *cmd; | |
1936 | ||
1937 | /* Avoid endless recursion if a `source' command is contained | |
1938 | in bs->commands. */ | |
1939 | if (executing_breakpoint_commands) | |
1940 | return; | |
1941 | ||
1942 | executing_breakpoint_commands = 1; | |
1943 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1944 | ||
1945 | top: | |
1946 | /* Note that (as of this writing), our callers all appear to | |
1947 | be passing us the address of global stop_bpstat. And, if | |
1948 | our calls to execute_control_command cause the inferior to | |
1949 | proceed, that global (and hence, *bsp) will change. | |
1950 | ||
1951 | We must be careful to not touch *bsp unless the inferior | |
1952 | has not proceeded. */ | |
1953 | ||
1954 | /* This pointer will iterate over the list of bpstat's. */ | |
1955 | bs = *bsp; | |
1956 | ||
1957 | breakpoint_proceeded = 0; | |
1958 | for (; bs != NULL; bs = bs->next) | |
1959 | { | |
1960 | cmd = bs->commands; | |
1961 | while (cmd != NULL) | |
1962 | { | |
1963 | execute_control_command (cmd); | |
1964 | ||
1965 | if (breakpoint_proceeded) | |
1966 | break; | |
1967 | else | |
1968 | cmd = cmd->next; | |
1969 | } | |
1970 | if (breakpoint_proceeded) | |
1971 | /* The inferior is proceeded by the command; bomb out now. | |
1972 | The bpstat chain has been blown away by wait_for_inferior. | |
1973 | But since execution has stopped again, there is a new bpstat | |
1974 | to look at, so start over. */ | |
1975 | goto top; | |
1976 | else | |
c2b8ed2c | 1977 | free_command_lines (&bs->commands); |
c906108c | 1978 | } |
c2b8ed2c | 1979 | do_cleanups (old_chain); |
c906108c SS |
1980 | } |
1981 | ||
e514a9d6 | 1982 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1983 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1984 | by having it set different print_it values. |
1985 | ||
1986 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1987 | through the bpstat list of things causing this stop, calling the | |
1988 | print_bp_stop_message function on each one. The behavior of the | |
1989 | print_bp_stop_message function depends on the print_it field of | |
1990 | bpstat. If such field so indicates, call this function here. | |
1991 | ||
1992 | Return values from this routine (ultimately used by bpstat_print() | |
1993 | and normal_stop() to decide what to do): | |
1994 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1995 | don't print anything else. | |
1996 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1997 | that something to be followed by a location. | |
1998 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1999 | that something to be followed by a location. | |
2000 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2001 | analysis. */ | |
c906108c | 2002 | |
917317f4 | 2003 | static enum print_stop_action |
fba45db2 | 2004 | print_it_typical (bpstat bs) |
c906108c | 2005 | { |
3b31d625 | 2006 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2007 | struct ui_stream *stb; |
2008 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2009 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2010 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2011 | which has since been deleted. */ | |
e514a9d6 | 2012 | if (bs->breakpoint_at == NULL) |
917317f4 | 2013 | return PRINT_UNKNOWN; |
c906108c | 2014 | |
e514a9d6 | 2015 | switch (bs->breakpoint_at->type) |
c906108c | 2016 | { |
e514a9d6 JM |
2017 | case bp_breakpoint: |
2018 | case bp_hardware_breakpoint: | |
8b93c638 JM |
2019 | annotate_breakpoint (bs->breakpoint_at->number); |
2020 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2021 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2022 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2023 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2024 | ui_out_text (uiout, ", "); | |
2025 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2026 | break; |
2027 | ||
2028 | case bp_shlib_event: | |
917317f4 JM |
2029 | /* Did we stop because the user set the stop_on_solib_events |
2030 | variable? (If so, we report this as a generic, "Stopped due | |
2031 | to shlib event" message.) */ | |
e514a9d6 JM |
2032 | printf_filtered ("Stopped due to shared library event\n"); |
2033 | return PRINT_NOTHING; | |
2034 | break; | |
2035 | ||
c4093a6a JM |
2036 | case bp_thread_event: |
2037 | /* Not sure how we will get here. | |
2038 | GDB should not stop for these breakpoints. */ | |
2039 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2040 | return PRINT_NOTHING; | |
2041 | break; | |
2042 | ||
1900040c MS |
2043 | case bp_overlay_event: |
2044 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2045 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2046 | return PRINT_NOTHING; | |
2047 | break; | |
2048 | ||
e514a9d6 | 2049 | case bp_catch_load: |
c906108c SS |
2050 | annotate_catchpoint (bs->breakpoint_at->number); |
2051 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2052 | printf_filtered ("loaded"); |
2053 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2054 | return PRINT_SRC_AND_LOC; | |
2055 | break; | |
2056 | ||
2057 | case bp_catch_unload: | |
2058 | annotate_catchpoint (bs->breakpoint_at->number); | |
2059 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2060 | printf_filtered ("unloaded"); | |
2061 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2062 | return PRINT_SRC_AND_LOC; | |
2063 | break; | |
2064 | ||
2065 | case bp_catch_fork: | |
2066 | annotate_catchpoint (bs->breakpoint_at->number); | |
2067 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2068 | printf_filtered ("forked"); | |
53a5351d JM |
2069 | printf_filtered (" process %d), ", |
2070 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2071 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2072 | break; |
2073 | ||
2074 | case bp_catch_vfork: | |
2075 | annotate_catchpoint (bs->breakpoint_at->number); | |
2076 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2077 | printf_filtered ("vforked"); | |
2078 | printf_filtered (" process %d), ", | |
2079 | bs->breakpoint_at->forked_inferior_pid); | |
2080 | return PRINT_SRC_AND_LOC; | |
2081 | break; | |
2082 | ||
2083 | case bp_catch_exec: | |
c906108c SS |
2084 | annotate_catchpoint (bs->breakpoint_at->number); |
2085 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2086 | bs->breakpoint_at->number, |
2087 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2088 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2089 | break; |
2090 | ||
2091 | case bp_catch_catch: | |
53a5351d JM |
2092 | if (current_exception_event && |
2093 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2094 | { |
2095 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2096 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2097 | bs->breakpoint_at->number); | |
c5aa993b JM |
2098 | printf_filtered ("throw location "); |
2099 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2100 | printf_filtered ("%s:%d", | |
2101 | CURRENT_EXCEPTION_THROW_FILE, | |
2102 | CURRENT_EXCEPTION_THROW_LINE); | |
2103 | else | |
2104 | printf_filtered ("unknown"); | |
2105 | ||
2106 | printf_filtered (", catch location "); | |
2107 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2108 | printf_filtered ("%s:%d", | |
2109 | CURRENT_EXCEPTION_CATCH_FILE, | |
2110 | CURRENT_EXCEPTION_CATCH_LINE); | |
2111 | else | |
2112 | printf_filtered ("unknown"); | |
2113 | ||
2114 | printf_filtered ("\n"); | |
e514a9d6 JM |
2115 | /* don't bother to print location frame info */ |
2116 | return PRINT_SRC_ONLY; | |
c5aa993b | 2117 | } |
c906108c | 2118 | else |
c5aa993b | 2119 | { |
e514a9d6 JM |
2120 | /* really throw, some other bpstat will handle it */ |
2121 | return PRINT_UNKNOWN; | |
c5aa993b | 2122 | } |
e514a9d6 JM |
2123 | break; |
2124 | ||
2125 | case bp_catch_throw: | |
53a5351d JM |
2126 | if (current_exception_event && |
2127 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2128 | { |
2129 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2130 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2131 | bs->breakpoint_at->number); | |
c5aa993b JM |
2132 | printf_filtered ("throw location "); |
2133 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2134 | printf_filtered ("%s:%d", | |
2135 | CURRENT_EXCEPTION_THROW_FILE, | |
2136 | CURRENT_EXCEPTION_THROW_LINE); | |
2137 | else | |
2138 | printf_filtered ("unknown"); | |
2139 | ||
2140 | printf_filtered (", catch location "); | |
2141 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2142 | printf_filtered ("%s:%d", | |
2143 | CURRENT_EXCEPTION_CATCH_FILE, | |
2144 | CURRENT_EXCEPTION_CATCH_LINE); | |
2145 | else | |
2146 | printf_filtered ("unknown"); | |
2147 | ||
2148 | printf_filtered ("\n"); | |
e514a9d6 JM |
2149 | /* don't bother to print location frame info */ |
2150 | return PRINT_SRC_ONLY; | |
c5aa993b | 2151 | } |
c906108c | 2152 | else |
c5aa993b | 2153 | { |
e514a9d6 JM |
2154 | /* really catch, some other bpstat will handle it */ |
2155 | return PRINT_UNKNOWN; | |
c5aa993b | 2156 | } |
e514a9d6 | 2157 | break; |
c906108c | 2158 | |
e514a9d6 JM |
2159 | case bp_watchpoint: |
2160 | case bp_hardware_watchpoint: | |
2161 | if (bs->old_val != NULL) | |
2162 | { | |
2163 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2164 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2165 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2166 | mention (bs->breakpoint_at); |
3b31d625 | 2167 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2168 | ui_out_text (uiout, "\nOld value = "); |
2169 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2170 | ui_out_field_stream (uiout, "old", stb); | |
2171 | ui_out_text (uiout, "\nNew value = "); | |
2172 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2173 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2174 | do_cleanups (ui_out_chain); |
8b93c638 | 2175 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2176 | value_free (bs->old_val); |
2177 | bs->old_val = NULL; | |
2178 | } | |
2179 | /* More than one watchpoint may have been triggered. */ | |
2180 | return PRINT_UNKNOWN; | |
2181 | break; | |
2182 | ||
2183 | case bp_read_watchpoint: | |
9dc5e2a9 | 2184 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2185 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2186 | mention (bs->breakpoint_at); |
3b31d625 | 2187 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2188 | ui_out_text (uiout, "\nValue = "); |
2189 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2190 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2191 | do_cleanups (ui_out_chain); |
8b93c638 | 2192 | ui_out_text (uiout, "\n"); |
917317f4 | 2193 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2194 | break; |
2195 | ||
2196 | case bp_access_watchpoint: | |
8b93c638 JM |
2197 | if (bs->old_val != NULL) |
2198 | { | |
2199 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2200 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2201 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2202 | mention (bs->breakpoint_at); |
3b31d625 | 2203 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2204 | ui_out_text (uiout, "\nOld value = "); |
2205 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2206 | ui_out_field_stream (uiout, "old", stb); | |
2207 | value_free (bs->old_val); | |
2208 | bs->old_val = NULL; | |
2209 | ui_out_text (uiout, "\nNew value = "); | |
2210 | } | |
2211 | else | |
2212 | { | |
2213 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2214 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2215 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2216 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2217 | ui_out_text (uiout, "\nValue = "); |
2218 | } | |
2219 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2220 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2221 | do_cleanups (ui_out_chain); |
8b93c638 | 2222 | ui_out_text (uiout, "\n"); |
917317f4 | 2223 | return PRINT_UNKNOWN; |
e514a9d6 | 2224 | break; |
4ce44c66 | 2225 | |
e514a9d6 JM |
2226 | /* Fall through, we don't deal with these types of breakpoints |
2227 | here. */ | |
2228 | ||
11cf8741 | 2229 | case bp_finish: |
9dc5e2a9 | 2230 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2231 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2232 | return PRINT_UNKNOWN; |
2233 | break; | |
2234 | ||
e514a9d6 | 2235 | case bp_until: |
9dc5e2a9 | 2236 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2237 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2238 | return PRINT_UNKNOWN; |
2239 | break; | |
2240 | ||
c2d11a7d | 2241 | case bp_none: |
e514a9d6 JM |
2242 | case bp_longjmp: |
2243 | case bp_longjmp_resume: | |
2244 | case bp_step_resume: | |
2245 | case bp_through_sigtramp: | |
2246 | case bp_watchpoint_scope: | |
2247 | case bp_call_dummy: | |
2248 | default: | |
2249 | return PRINT_UNKNOWN; | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | /* Generic routine for printing messages indicating why we | |
2254 | stopped. The behavior of this function depends on the value | |
2255 | 'print_it' in the bpstat structure. Under some circumstances we | |
2256 | may decide not to print anything here and delegate the task to | |
2257 | normal_stop(). */ | |
2258 | ||
2259 | static enum print_stop_action | |
2260 | print_bp_stop_message (bpstat bs) | |
2261 | { | |
2262 | switch (bs->print_it) | |
2263 | { | |
2264 | case print_it_noop: | |
2265 | /* Nothing should be printed for this bpstat entry. */ | |
2266 | return PRINT_UNKNOWN; | |
2267 | break; | |
2268 | ||
2269 | case print_it_done: | |
2270 | /* We still want to print the frame, but we already printed the | |
2271 | relevant messages. */ | |
2272 | return PRINT_SRC_AND_LOC; | |
2273 | break; | |
2274 | ||
2275 | case print_it_normal: | |
2276 | /* Normal case, we handle everything in print_it_typical. */ | |
2277 | return print_it_typical (bs); | |
2278 | break; | |
2279 | default: | |
8e65ff28 AC |
2280 | internal_error (__FILE__, __LINE__, |
2281 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2282 | break; |
c906108c | 2283 | } |
c906108c SS |
2284 | } |
2285 | ||
e514a9d6 JM |
2286 | /* Print a message indicating what happened. This is called from |
2287 | normal_stop(). The input to this routine is the head of the bpstat | |
2288 | list - a list of the eventpoints that caused this stop. This | |
2289 | routine calls the generic print routine for printing a message | |
2290 | about reasons for stopping. This will print (for example) the | |
2291 | "Breakpoint n," part of the output. The return value of this | |
2292 | routine is one of: | |
c906108c | 2293 | |
917317f4 JM |
2294 | PRINT_UNKNOWN: Means we printed nothing |
2295 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2296 | code to print the location. An example is |
2297 | "Breakpoint 1, " which should be followed by | |
2298 | the location. | |
917317f4 | 2299 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2300 | to also print the location part of the message. |
2301 | An example is the catch/throw messages, which | |
917317f4 JM |
2302 | don't require a location appended to the end. |
2303 | PRINT_NOTHING: We have done some printing and we don't need any | |
2304 | further info to be printed.*/ | |
c906108c | 2305 | |
917317f4 | 2306 | enum print_stop_action |
fba45db2 | 2307 | bpstat_print (bpstat bs) |
c906108c SS |
2308 | { |
2309 | int val; | |
c5aa993b | 2310 | |
c906108c | 2311 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2312 | (Currently all watchpoints go on the bpstat whether hit or not. |
2313 | That probably could (should) be changed, provided care is taken | |
c906108c | 2314 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2315 | for (; bs; bs = bs->next) |
2316 | { | |
2317 | val = print_bp_stop_message (bs); | |
2318 | if (val == PRINT_SRC_ONLY | |
2319 | || val == PRINT_SRC_AND_LOC | |
2320 | || val == PRINT_NOTHING) | |
2321 | return val; | |
2322 | } | |
c906108c | 2323 | |
e514a9d6 JM |
2324 | /* We reached the end of the chain, or we got a null BS to start |
2325 | with and nothing was printed. */ | |
917317f4 | 2326 | return PRINT_UNKNOWN; |
c906108c SS |
2327 | } |
2328 | ||
2329 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2330 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2331 | The argument is a "struct expression *" that has been cast to char * to | |
2332 | make it pass through catch_errors. */ | |
2333 | ||
2334 | static int | |
4efb68b1 | 2335 | breakpoint_cond_eval (void *exp) |
c906108c | 2336 | { |
278cd55f | 2337 | struct value *mark = value_mark (); |
c5aa993b | 2338 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2339 | value_free_to_mark (mark); |
2340 | return i; | |
2341 | } | |
2342 | ||
2343 | /* Allocate a new bpstat and chain it to the current one. */ | |
2344 | ||
2345 | static bpstat | |
831662b3 | 2346 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2347 | { |
2348 | bpstat bs; | |
2349 | ||
2350 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2351 | cbs->next = bs; | |
2352 | bs->breakpoint_at = b; | |
2353 | /* If the condition is false, etc., don't do the commands. */ | |
2354 | bs->commands = NULL; | |
2355 | bs->old_val = NULL; | |
2356 | bs->print_it = print_it_normal; | |
2357 | return bs; | |
2358 | } | |
2359 | \f | |
2360 | /* Possible return values for watchpoint_check (this can't be an enum | |
2361 | because of check_errors). */ | |
2362 | /* The watchpoint has been deleted. */ | |
2363 | #define WP_DELETED 1 | |
2364 | /* The value has changed. */ | |
2365 | #define WP_VALUE_CHANGED 2 | |
2366 | /* The value has not changed. */ | |
2367 | #define WP_VALUE_NOT_CHANGED 3 | |
2368 | ||
2369 | #define BP_TEMPFLAG 1 | |
2370 | #define BP_HARDWAREFLAG 2 | |
2371 | ||
2372 | /* Check watchpoint condition. */ | |
2373 | ||
2374 | static int | |
4efb68b1 | 2375 | watchpoint_check (void *p) |
c906108c SS |
2376 | { |
2377 | bpstat bs = (bpstat) p; | |
2378 | struct breakpoint *b; | |
2379 | struct frame_info *fr; | |
2380 | int within_current_scope; | |
2381 | ||
2382 | b = bs->breakpoint_at; | |
2383 | ||
2384 | if (b->exp_valid_block == NULL) | |
2385 | within_current_scope = 1; | |
2386 | else | |
2387 | { | |
2388 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2389 | any chance of handling watchpoints on local variables, we'll need |
2390 | the frame chain (so we can determine if we're in scope). */ | |
2391 | reinit_frame_cache (); | |
101dcfbe | 2392 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2393 | within_current_scope = (fr != NULL); |
c12260ac CV |
2394 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2395 | in the function but the stack frame has already been invalidated. | |
2396 | Since we can't rely on the values of local variables after the | |
2397 | stack has been destroyed, we are treating the watchpoint in that | |
2398 | state as `not changed' without further checking. */ | |
2399 | if (within_current_scope && fr == get_current_frame () | |
2400 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) | |
2401 | return WP_VALUE_NOT_CHANGED; | |
c906108c SS |
2402 | if (within_current_scope) |
2403 | /* If we end up stopping, the current frame will get selected | |
2404 | in normal_stop. So this call to select_frame won't affect | |
2405 | the user. */ | |
0f7d239c | 2406 | select_frame (fr); |
c906108c | 2407 | } |
c5aa993b | 2408 | |
c906108c SS |
2409 | if (within_current_scope) |
2410 | { | |
2411 | /* We use value_{,free_to_}mark because it could be a | |
2412 | *long* time before we return to the command level and | |
c5aa993b JM |
2413 | call free_all_values. We can't call free_all_values because |
2414 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2415 | |
278cd55f AC |
2416 | struct value *mark = value_mark (); |
2417 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2418 | if (!value_equal (b->val, new_val)) |
2419 | { | |
2420 | release_value (new_val); | |
2421 | value_free_to_mark (mark); | |
2422 | bs->old_val = b->val; | |
2423 | b->val = new_val; | |
2424 | /* We will stop here */ | |
2425 | return WP_VALUE_CHANGED; | |
2426 | } | |
2427 | else | |
2428 | { | |
2429 | /* Nothing changed, don't do anything. */ | |
2430 | value_free_to_mark (mark); | |
2431 | /* We won't stop here */ | |
2432 | return WP_VALUE_NOT_CHANGED; | |
2433 | } | |
2434 | } | |
2435 | else | |
2436 | { | |
2437 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2438 | if we temporarily ignored the watchpoint, then when |
2439 | we reenter the block in which it is valid it contains | |
2440 | garbage (in the case of a function, it may have two | |
2441 | garbage values, one before and one after the prologue). | |
2442 | So we can't even detect the first assignment to it and | |
2443 | watch after that (since the garbage may or may not equal | |
2444 | the first value assigned). */ | |
4ce44c66 JM |
2445 | /* We print all the stop information in print_it_typical(), but |
2446 | in this case, by the time we call print_it_typical() this bp | |
2447 | will be deleted already. So we have no choice but print the | |
2448 | information here. */ | |
9dc5e2a9 | 2449 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2450 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2451 | ui_out_text (uiout, "\nWatchpoint "); |
2452 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2453 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2454 | which its expression is valid.\n"); | |
4ce44c66 | 2455 | |
c906108c | 2456 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2457 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2458 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2459 | |
2460 | return WP_DELETED; | |
2461 | } | |
2462 | } | |
2463 | ||
c906108c SS |
2464 | /* Get a bpstat associated with having just stopped at address *PC |
2465 | and frame address CORE_ADDRESS. Update *PC to point at the | |
6e31adb3 | 2466 | breakpoint (if we hit a breakpoint). NOT_A_SW_BREAKPOINT is nonzero |
c906108c SS |
2467 | if this is known to not be a real breakpoint (it could still be a |
2468 | watchpoint, though). */ | |
2469 | ||
2470 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2471 | don't understand this stop. Result is a chain of bpstat's such that: | |
2472 | ||
c5aa993b | 2473 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2474 | |
c5aa993b | 2475 | if we understand why we stopped, the result is not null. |
c906108c | 2476 | |
c5aa993b JM |
2477 | Each element of the chain refers to a particular breakpoint or |
2478 | watchpoint at which we have stopped. (We may have stopped for | |
2479 | several reasons concurrently.) | |
c906108c | 2480 | |
c5aa993b JM |
2481 | Each element of the chain has valid next, breakpoint_at, |
2482 | commands, FIXME??? fields. */ | |
c906108c SS |
2483 | |
2484 | bpstat | |
6e31adb3 | 2485 | bpstat_stop_status (CORE_ADDR *pc, int not_a_sw_breakpoint) |
c906108c SS |
2486 | { |
2487 | register struct breakpoint *b, *temp; | |
2488 | CORE_ADDR bp_addr; | |
2489 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2490 | int real_breakpoint = 0; | |
2491 | /* Root of the chain of bpstat's */ | |
2492 | struct bpstats root_bs[1]; | |
2493 | /* Pointer to the last thing in the chain currently. */ | |
2494 | bpstat bs = root_bs; | |
2495 | static char message1[] = | |
c5aa993b JM |
2496 | "Error evaluating expression for watchpoint %d\n"; |
2497 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c | 2498 | |
6e31adb3 AC |
2499 | /* Get the address where the breakpoint would have been. The |
2500 | "not_a_sw_breakpoint" argument is meant to distinguish between a | |
2501 | breakpoint trap event and a trace/singlestep trap event. For a | |
2502 | trace/singlestep trap event, we would not want to subtract | |
2503 | DECR_PC_AFTER_BREAK from the PC. */ | |
80b34fab | 2504 | |
c8edd8b4 | 2505 | bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2506 | |
2507 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2508 | { |
b5de0fa7 EZ |
2509 | if (b->enable_state == bp_disabled |
2510 | || b->enable_state == bp_shlib_disabled | |
2511 | || b->enable_state == bp_call_disabled) | |
c5aa993b JM |
2512 | continue; |
2513 | ||
2514 | if (b->type != bp_watchpoint | |
2515 | && b->type != bp_hardware_watchpoint | |
2516 | && b->type != bp_read_watchpoint | |
2517 | && b->type != bp_access_watchpoint | |
2518 | && b->type != bp_hardware_breakpoint | |
2519 | && b->type != bp_catch_fork | |
2520 | && b->type != bp_catch_vfork | |
2521 | && b->type != bp_catch_exec | |
2522 | && b->type != bp_catch_catch | |
2523 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 MS |
2524 | { |
2525 | if (b->address != bp_addr) /* address doesn't match */ | |
2526 | continue; | |
2527 | if (overlay_debugging /* unmapped overlay section */ | |
2528 | && section_is_overlay (b->section) | |
2529 | && !section_is_mapped (b->section)) | |
2530 | continue; | |
2531 | } | |
c906108c | 2532 | |
c02f5703 MS |
2533 | if (b->type == bp_hardware_breakpoint) |
2534 | { | |
2535 | if (b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2536 | continue; | |
2537 | if (overlay_debugging /* unmapped overlay section */ | |
2538 | && section_is_overlay (b->section) | |
2539 | && !section_is_mapped (b->section)) | |
2540 | continue; | |
2541 | } | |
c5aa993b | 2542 | |
c5aa993b JM |
2543 | /* Is this a catchpoint of a load or unload? If so, did we |
2544 | get a load or unload of the specified library? If not, | |
2545 | ignore it. */ | |
2546 | if ((b->type == bp_catch_load) | |
c906108c | 2547 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2548 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2549 | || ((b->dll_pathname != NULL) |
53a5351d | 2550 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2551 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2552 | PIDGET (inferior_ptid))) | |
53a5351d | 2553 | != 0))) |
c906108c | 2554 | #endif |
c5aa993b JM |
2555 | ) |
2556 | continue; | |
2557 | ||
2558 | if ((b->type == bp_catch_unload) | |
c906108c | 2559 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2560 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2561 | || ((b->dll_pathname != NULL) |
53a5351d | 2562 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2563 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2564 | PIDGET (inferior_ptid))) | |
53a5351d | 2565 | != 0))) |
c906108c | 2566 | #endif |
c5aa993b JM |
2567 | ) |
2568 | continue; | |
c906108c | 2569 | |
c5aa993b | 2570 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2571 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2572 | &b->forked_inferior_pid)) | |
c5aa993b | 2573 | continue; |
c906108c | 2574 | |
c5aa993b | 2575 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2576 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2577 | &b->forked_inferior_pid)) | |
c5aa993b | 2578 | continue; |
c906108c | 2579 | |
c5aa993b | 2580 | if ((b->type == bp_catch_exec) |
47932f85 | 2581 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2582 | continue; |
c906108c | 2583 | |
c5aa993b JM |
2584 | if (ep_is_exception_catchpoint (b) && |
2585 | !(current_exception_event = target_get_current_exception_event ())) | |
2586 | continue; | |
c906108c | 2587 | |
c5aa993b JM |
2588 | /* Come here if it's a watchpoint, or if the break address matches */ |
2589 | ||
2590 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2591 | ||
2592 | /* Watchpoints may change this, if not found to have triggered. */ | |
2593 | bs->stop = 1; | |
2594 | bs->print = 1; | |
2595 | ||
2596 | sprintf (message, message1, b->number); | |
53a5351d JM |
2597 | if (b->type == bp_watchpoint || |
2598 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2599 | { |
53a5351d JM |
2600 | switch (catch_errors (watchpoint_check, bs, message, |
2601 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2602 | { |
2603 | case WP_DELETED: | |
2604 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2605 | /* Actually this is superfluous, because by the time we |
2606 | call print_it_typical() the wp will be already deleted, | |
2607 | and the function will return immediately. */ | |
c5aa993b JM |
2608 | bs->print_it = print_it_done; |
2609 | /* Stop. */ | |
2610 | break; | |
2611 | case WP_VALUE_CHANGED: | |
2612 | /* Stop. */ | |
2613 | ++(b->hit_count); | |
2614 | break; | |
2615 | case WP_VALUE_NOT_CHANGED: | |
2616 | /* Don't stop. */ | |
2617 | bs->print_it = print_it_noop; | |
2618 | bs->stop = 0; | |
c5aa993b JM |
2619 | continue; |
2620 | default: | |
2621 | /* Can't happen. */ | |
2622 | /* FALLTHROUGH */ | |
2623 | case 0: | |
2624 | /* Error from catch_errors. */ | |
2625 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2626 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2627 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2628 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2629 | /* We've already printed what needs to be printed. */ |
2630 | bs->print_it = print_it_done; | |
2631 | ||
2632 | /* Stop. */ | |
2633 | break; | |
2634 | } | |
2635 | } | |
53a5351d JM |
2636 | else if (b->type == bp_read_watchpoint || |
2637 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2638 | { |
2639 | CORE_ADDR addr; | |
278cd55f | 2640 | struct value *v; |
c5aa993b JM |
2641 | int found = 0; |
2642 | ||
2643 | addr = target_stopped_data_address (); | |
2644 | if (addr == 0) | |
2645 | continue; | |
2646 | for (v = b->val_chain; v; v = v->next) | |
2647 | { | |
5c44784c JM |
2648 | if (VALUE_LVAL (v) == lval_memory |
2649 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2650 | { |
2e70b7b9 MS |
2651 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2652 | ||
2653 | if (v == b->val_chain | |
2654 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2655 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2656 | { | |
2657 | CORE_ADDR vaddr; | |
2658 | ||
2659 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2660 | /* Exact match not required. Within range is | |
2661 | sufficient. */ | |
2662 | if (addr >= vaddr && | |
2663 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2664 | found = 1; | |
2665 | } | |
c5aa993b JM |
2666 | } |
2667 | } | |
2668 | if (found) | |
53a5351d JM |
2669 | switch (catch_errors (watchpoint_check, bs, message, |
2670 | RETURN_MASK_ALL)) | |
c906108c SS |
2671 | { |
2672 | case WP_DELETED: | |
2673 | /* We've already printed what needs to be printed. */ | |
2674 | bs->print_it = print_it_done; | |
2675 | /* Stop. */ | |
2676 | break; | |
2677 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2678 | if (b->type == bp_read_watchpoint) |
2679 | { | |
2680 | /* Don't stop: read watchpoints shouldn't fire if | |
2681 | the value has changed. This is for targets which | |
2682 | cannot set read-only watchpoints. */ | |
2683 | bs->print_it = print_it_noop; | |
2684 | bs->stop = 0; | |
2685 | continue; | |
2686 | } | |
2687 | ++(b->hit_count); | |
2688 | break; | |
c5aa993b | 2689 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2690 | /* Stop. */ |
2691 | ++(b->hit_count); | |
2692 | break; | |
c906108c SS |
2693 | default: |
2694 | /* Can't happen. */ | |
c906108c SS |
2695 | case 0: |
2696 | /* Error from catch_errors. */ | |
2697 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2698 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2699 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2700 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2701 | /* We've already printed what needs to be printed. */ |
2702 | bs->print_it = print_it_done; | |
c906108c SS |
2703 | break; |
2704 | } | |
53a5351d JM |
2705 | else /* found == 0 */ |
2706 | { | |
2707 | /* This is a case where some watchpoint(s) triggered, | |
2708 | but not at the address of this watchpoint (FOUND | |
2709 | was left zero). So don't print anything for this | |
2710 | watchpoint. */ | |
2711 | bs->print_it = print_it_noop; | |
2712 | bs->stop = 0; | |
2713 | continue; | |
2714 | } | |
c5aa993b JM |
2715 | } |
2716 | else | |
2717 | { | |
2718 | /* By definition, an encountered breakpoint is a triggered | |
2719 | breakpoint. */ | |
2720 | ++(b->hit_count); | |
c906108c | 2721 | |
c5aa993b JM |
2722 | real_breakpoint = 1; |
2723 | } | |
2724 | ||
818dd999 AC |
2725 | if (frame_id_p (b->frame_id) |
2726 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2727 | bs->stop = 0; |
2728 | else | |
2729 | { | |
2730 | int value_is_zero = 0; | |
2731 | ||
2732 | if (b->cond) | |
2733 | { | |
2734 | /* Need to select the frame, with all that implies | |
2735 | so that the conditions will have the right context. */ | |
0f7d239c | 2736 | select_frame (get_current_frame ()); |
c5aa993b JM |
2737 | value_is_zero |
2738 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2739 | "Error in testing breakpoint condition:\n", | |
2740 | RETURN_MASK_ALL); | |
2741 | /* FIXME-someday, should give breakpoint # */ | |
2742 | free_all_values (); | |
2743 | } | |
2744 | if (b->cond && value_is_zero) | |
2745 | { | |
2746 | bs->stop = 0; | |
2747 | /* Don't consider this a hit. */ | |
2748 | --(b->hit_count); | |
2749 | } | |
2750 | else if (b->ignore_count > 0) | |
2751 | { | |
2752 | b->ignore_count--; | |
5c44784c | 2753 | annotate_ignore_count_change (); |
c5aa993b JM |
2754 | bs->stop = 0; |
2755 | } | |
2756 | else | |
2757 | { | |
2758 | /* We will stop here */ | |
b5de0fa7 EZ |
2759 | if (b->disposition == disp_disable) |
2760 | b->enable_state = bp_disabled; | |
c2b8ed2c | 2761 | bs->commands = copy_command_lines (b->commands); |
c5aa993b JM |
2762 | if (b->silent) |
2763 | bs->print = 0; | |
2764 | if (bs->commands && | |
2765 | (STREQ ("silent", bs->commands->line) || | |
2766 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2767 | { | |
2768 | bs->commands = bs->commands->next; | |
c906108c | 2769 | bs->print = 0; |
c5aa993b JM |
2770 | } |
2771 | } | |
2772 | } | |
2773 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2774 | if (bs->stop == 0 || bs->print == 0) | |
2775 | bs->print_it = print_it_noop; | |
2776 | } | |
c906108c SS |
2777 | |
2778 | bs->next = NULL; /* Terminate the chain */ | |
2779 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2780 | ||
2781 | if (real_breakpoint && bs) | |
2782 | { | |
c5aa993b | 2783 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2784 | { |
c5aa993b | 2785 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2786 | { |
2787 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2788 | write_pc (*pc); | |
2789 | } | |
2790 | } | |
2791 | else | |
2792 | { | |
2793 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2794 | { | |
2795 | *pc = bp_addr; | |
2796 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2797 | SHIFT_INST_REGS (); |
c906108c SS |
2798 | #else /* No SHIFT_INST_REGS. */ |
2799 | write_pc (bp_addr); | |
2800 | #endif /* No SHIFT_INST_REGS. */ | |
2801 | } | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | /* The value of a hardware watchpoint hasn't changed, but the | |
2806 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2807 | if (bs && !bs->stop && |
c906108c SS |
2808 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2809 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2810 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2811 | { | |
2812 | remove_breakpoints (); | |
2813 | insert_breakpoints (); | |
2814 | } | |
2815 | return bs; | |
2816 | } | |
2817 | \f | |
2818 | /* Tell what to do about this bpstat. */ | |
2819 | struct bpstat_what | |
fba45db2 | 2820 | bpstat_what (bpstat bs) |
c906108c SS |
2821 | { |
2822 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2823 | enum class |
2824 | { | |
2825 | /* This bpstat element has no effect on the main_action. */ | |
2826 | no_effect = 0, | |
2827 | ||
2828 | /* There was a watchpoint, stop but don't print. */ | |
2829 | wp_silent, | |
c906108c | 2830 | |
c5aa993b JM |
2831 | /* There was a watchpoint, stop and print. */ |
2832 | wp_noisy, | |
c906108c | 2833 | |
c5aa993b JM |
2834 | /* There was a breakpoint but we're not stopping. */ |
2835 | bp_nostop, | |
c906108c | 2836 | |
c5aa993b JM |
2837 | /* There was a breakpoint, stop but don't print. */ |
2838 | bp_silent, | |
c906108c | 2839 | |
c5aa993b JM |
2840 | /* There was a breakpoint, stop and print. */ |
2841 | bp_noisy, | |
c906108c | 2842 | |
c5aa993b JM |
2843 | /* We hit the longjmp breakpoint. */ |
2844 | long_jump, | |
c906108c | 2845 | |
c5aa993b JM |
2846 | /* We hit the longjmp_resume breakpoint. */ |
2847 | long_resume, | |
c906108c | 2848 | |
c5aa993b JM |
2849 | /* We hit the step_resume breakpoint. */ |
2850 | step_resume, | |
c906108c | 2851 | |
c5aa993b JM |
2852 | /* We hit the through_sigtramp breakpoint. */ |
2853 | through_sig, | |
c906108c | 2854 | |
c5aa993b JM |
2855 | /* We hit the shared library event breakpoint. */ |
2856 | shlib_event, | |
c906108c | 2857 | |
c5aa993b JM |
2858 | /* We caught a shared library event. */ |
2859 | catch_shlib_event, | |
c906108c | 2860 | |
c5aa993b JM |
2861 | /* This is just used to count how many enums there are. */ |
2862 | class_last | |
c906108c SS |
2863 | }; |
2864 | ||
2865 | /* Here is the table which drives this routine. So that we can | |
2866 | format it pretty, we define some abbreviations for the | |
2867 | enum bpstat_what codes. */ | |
2868 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2869 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2870 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2871 | #define sgl BPSTAT_WHAT_SINGLE | |
2872 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2873 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2874 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2875 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2876 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2877 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2878 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2879 | ||
2880 | /* "Can't happen." Might want to print an error message. | |
2881 | abort() is not out of the question, but chances are GDB is just | |
2882 | a bit confused, not unusable. */ | |
2883 | #define err BPSTAT_WHAT_STOP_NOISY | |
2884 | ||
2885 | /* Given an old action and a class, come up with a new action. */ | |
2886 | /* One interesting property of this table is that wp_silent is the same | |
2887 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2888 | after stopping, the check for whether to step over a breakpoint | |
2889 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2890 | reference to how we stopped. We retain separate wp_silent and |
2891 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2892 | |
2893 | Another possibly interesting property of this table is that | |
2894 | there's a partial ordering, priority-like, of the actions. Once | |
2895 | you've decided that some action is appropriate, you'll never go | |
2896 | back and decide something of a lower priority is better. The | |
2897 | ordering is: | |
2898 | ||
7e73cedf | 2899 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2900 | sgl < clrs shl shlr slr sn sr ss ts |
2901 | slr < err shl shlr sn sr ss ts | |
2902 | clr < clrs err shl shlr sn sr ss ts | |
2903 | clrs < err shl shlr sn sr ss ts | |
2904 | ss < shl shlr sn sr ts | |
2905 | sn < shl shlr sr ts | |
2906 | sr < shl shlr ts | |
2907 | shl < shlr | |
2908 | ts < | |
2909 | shlr < | |
2910 | ||
43ff13b4 JM |
2911 | What I think this means is that we don't need a damned table |
2912 | here. If you just put the rows and columns in the right order, | |
2913 | it'd look awfully regular. We could simply walk the bpstat list | |
2914 | and choose the highest priority action we find, with a little | |
2915 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2916 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2917 | is messy anyway). */ | |
c906108c SS |
2918 | |
2919 | /* step_resume entries: a step resume breakpoint overrides another | |
2920 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 2921 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
2922 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2923 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2924 | ||
2925 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2926 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2927 | { | |
2928 | /* old action */ | |
2929 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2930 | */ | |
2931 | /*no_effect */ | |
2932 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2933 | /*wp_silent */ | |
2934 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2935 | /*wp_noisy */ | |
2936 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2937 | /*bp_nostop */ | |
2938 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2939 | /*bp_silent */ | |
2940 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2941 | /*bp_noisy */ | |
2942 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2943 | /*long_jump */ | |
a48bb0b3 | 2944 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2945 | /*long_resume */ |
2946 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2947 | /*step_resume */ | |
2948 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2949 | /*through_sig */ | |
2950 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2951 | /*shlib */ | |
2952 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2953 | /*catch_shlib */ | |
2954 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2955 | }; | |
c906108c SS |
2956 | |
2957 | #undef kc | |
2958 | #undef ss | |
2959 | #undef sn | |
2960 | #undef sgl | |
2961 | #undef slr | |
2962 | #undef clr | |
2963 | #undef clrs | |
2964 | #undef err | |
2965 | #undef sr | |
2966 | #undef ts | |
2967 | #undef shl | |
2968 | #undef shlr | |
2969 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2970 | struct bpstat_what retval; | |
2971 | ||
2972 | retval.call_dummy = 0; | |
2973 | for (; bs != NULL; bs = bs->next) | |
2974 | { | |
2975 | enum class bs_class = no_effect; | |
2976 | if (bs->breakpoint_at == NULL) | |
2977 | /* I suspect this can happen if it was a momentary breakpoint | |
2978 | which has since been deleted. */ | |
2979 | continue; | |
2980 | switch (bs->breakpoint_at->type) | |
2981 | { | |
2982 | case bp_none: | |
2983 | continue; | |
2984 | ||
2985 | case bp_breakpoint: | |
2986 | case bp_hardware_breakpoint: | |
2987 | case bp_until: | |
2988 | case bp_finish: | |
2989 | if (bs->stop) | |
2990 | { | |
2991 | if (bs->print) | |
2992 | bs_class = bp_noisy; | |
2993 | else | |
2994 | bs_class = bp_silent; | |
2995 | } | |
2996 | else | |
2997 | bs_class = bp_nostop; | |
2998 | break; | |
2999 | case bp_watchpoint: | |
3000 | case bp_hardware_watchpoint: | |
3001 | case bp_read_watchpoint: | |
3002 | case bp_access_watchpoint: | |
3003 | if (bs->stop) | |
3004 | { | |
3005 | if (bs->print) | |
3006 | bs_class = wp_noisy; | |
3007 | else | |
3008 | bs_class = wp_silent; | |
3009 | } | |
3010 | else | |
53a5351d JM |
3011 | /* There was a watchpoint, but we're not stopping. |
3012 | This requires no further action. */ | |
c906108c SS |
3013 | bs_class = no_effect; |
3014 | break; | |
3015 | case bp_longjmp: | |
3016 | bs_class = long_jump; | |
3017 | break; | |
3018 | case bp_longjmp_resume: | |
3019 | bs_class = long_resume; | |
3020 | break; | |
3021 | case bp_step_resume: | |
3022 | if (bs->stop) | |
3023 | { | |
3024 | bs_class = step_resume; | |
3025 | } | |
3026 | else | |
3027 | /* It is for the wrong frame. */ | |
3028 | bs_class = bp_nostop; | |
3029 | break; | |
3030 | case bp_through_sigtramp: | |
3031 | bs_class = through_sig; | |
3032 | break; | |
3033 | case bp_watchpoint_scope: | |
3034 | bs_class = bp_nostop; | |
3035 | break; | |
c5aa993b JM |
3036 | case bp_shlib_event: |
3037 | bs_class = shlib_event; | |
3038 | break; | |
c4093a6a | 3039 | case bp_thread_event: |
1900040c | 3040 | case bp_overlay_event: |
c4093a6a JM |
3041 | bs_class = bp_nostop; |
3042 | break; | |
c5aa993b JM |
3043 | case bp_catch_load: |
3044 | case bp_catch_unload: | |
3045 | /* Only if this catchpoint triggered should we cause the | |
3046 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3047 | catchpoint. */ | |
3048 | if (bs->stop) | |
3049 | bs_class = catch_shlib_event; | |
3050 | else | |
3051 | bs_class = no_effect; | |
3052 | break; | |
3053 | case bp_catch_fork: | |
3054 | case bp_catch_vfork: | |
3055 | case bp_catch_exec: | |
3056 | if (bs->stop) | |
3057 | { | |
3058 | if (bs->print) | |
3059 | bs_class = bp_noisy; | |
3060 | else | |
3061 | bs_class = bp_silent; | |
3062 | } | |
3063 | else | |
53a5351d JM |
3064 | /* There was a catchpoint, but we're not stopping. |
3065 | This requires no further action. */ | |
c5aa993b JM |
3066 | bs_class = no_effect; |
3067 | break; | |
3068 | case bp_catch_catch: | |
3069 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3070 | bs_class = bp_nostop; | |
3071 | else if (bs->stop) | |
3072 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3073 | break; | |
3074 | case bp_catch_throw: | |
3075 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3076 | bs_class = bp_nostop; | |
3077 | else if (bs->stop) | |
3078 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3079 | break; |
c906108c | 3080 | case bp_call_dummy: |
53a5351d JM |
3081 | /* Make sure the action is stop (silent or noisy), |
3082 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3083 | bs_class = bp_silent; |
3084 | retval.call_dummy = 1; | |
3085 | break; | |
3086 | } | |
c5aa993b | 3087 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3088 | } |
3089 | retval.main_action = current_action; | |
3090 | return retval; | |
3091 | } | |
3092 | ||
3093 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3094 | without hardware support). This isn't related to a specific bpstat, | |
3095 | just to things like whether watchpoints are set. */ | |
3096 | ||
c5aa993b | 3097 | int |
fba45db2 | 3098 | bpstat_should_step (void) |
c906108c SS |
3099 | { |
3100 | struct breakpoint *b; | |
3101 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3102 | if (b->enable_state == bp_enabled && b->type == bp_watchpoint) |
3172dc30 | 3103 | return 1; |
c906108c SS |
3104 | return 0; |
3105 | } | |
3106 | ||
3107 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3108 | int | |
fba45db2 | 3109 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
3110 | { |
3111 | struct breakpoint *b; | |
3112 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3113 | if ((b->enable_state == bp_enabled) && |
c5aa993b JM |
3114 | (b->inserted) && |
3115 | ((b->type == bp_hardware_watchpoint) || | |
3116 | (b->type == bp_read_watchpoint) || | |
3117 | (b->type == bp_access_watchpoint))) | |
3172dc30 | 3118 | return 1; |
c906108c SS |
3119 | return 0; |
3120 | } | |
c906108c | 3121 | \f |
c5aa993b | 3122 | |
c906108c SS |
3123 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3124 | function returns another bpstat which contains only the catchpoints | |
3125 | on that first list, if any. */ | |
3126 | void | |
fba45db2 | 3127 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3128 | { |
3129 | struct bpstats root_bs[1]; | |
3130 | bpstat bs = root_bs; | |
3131 | struct breakpoint *ep; | |
3132 | char *dll_pathname; | |
3133 | ||
c906108c SS |
3134 | bpstat_clear (cp_list); |
3135 | root_bs->next = NULL; | |
c5aa993b JM |
3136 | |
3137 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3138 | { |
3139 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3140 | ep = ep_list->breakpoint_at; | |
3141 | if (ep == NULL) | |
c5aa993b JM |
3142 | break; |
3143 | if ((ep->type != bp_catch_load) && | |
3144 | (ep->type != bp_catch_unload) && | |
3145 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3146 | (ep->type != bp_catch_throw)) |
3147 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3148 | continue; |
3149 | ||
c906108c SS |
3150 | /* Yes; add it to the list. */ |
3151 | bs = bpstat_alloc (ep, bs); | |
3152 | *bs = *ep_list; | |
3153 | bs->next = NULL; | |
3154 | bs = root_bs->next; | |
c5aa993b | 3155 | |
c906108c SS |
3156 | #if defined(SOLIB_ADD) |
3157 | /* Also, for each triggered catchpoint, tag it with the name of | |
3158 | the library that caused this trigger. (We copy the name now, | |
3159 | because it's only guaranteed to be available NOW, when the | |
3160 | catchpoint triggers. Clients who may wish to know the name | |
3161 | later must get it from the catchpoint itself.) */ | |
3162 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3163 | xfree (ep->triggered_dll_pathname); |
c906108c | 3164 | if (ep->type == bp_catch_load) |
39f77062 KB |
3165 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3166 | PIDGET (inferior_ptid)); | |
c906108c | 3167 | else |
39f77062 KB |
3168 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3169 | PIDGET (inferior_ptid)); | |
c906108c SS |
3170 | #else |
3171 | dll_pathname = NULL; | |
3172 | #endif | |
3173 | if (dll_pathname) | |
3174 | { | |
53a5351d JM |
3175 | ep->triggered_dll_pathname = (char *) |
3176 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3177 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3178 | } | |
3179 | else | |
3180 | ep->triggered_dll_pathname = NULL; | |
3181 | } | |
c5aa993b | 3182 | |
c906108c SS |
3183 | *cp_list = bs; |
3184 | } | |
3185 | ||
c4093a6a | 3186 | /* Print B to gdb_stdout. */ |
c906108c | 3187 | static void |
c4093a6a JM |
3188 | print_one_breakpoint (struct breakpoint *b, |
3189 | CORE_ADDR *last_addr) | |
c906108c | 3190 | { |
c906108c SS |
3191 | register struct command_line *l; |
3192 | register struct symbol *sym; | |
c4093a6a JM |
3193 | struct ep_type_description |
3194 | { | |
3195 | enum bptype type; | |
3196 | char *description; | |
3197 | }; | |
3198 | static struct ep_type_description bptypes[] = | |
c906108c | 3199 | { |
c5aa993b JM |
3200 | {bp_none, "?deleted?"}, |
3201 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3202 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3203 | {bp_until, "until"}, |
3204 | {bp_finish, "finish"}, | |
3205 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3206 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3207 | {bp_read_watchpoint, "read watchpoint"}, |
3208 | {bp_access_watchpoint, "acc watchpoint"}, | |
3209 | {bp_longjmp, "longjmp"}, | |
3210 | {bp_longjmp_resume, "longjmp resume"}, | |
3211 | {bp_step_resume, "step resume"}, | |
3212 | {bp_through_sigtramp, "sigtramp"}, | |
3213 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3214 | {bp_call_dummy, "call dummy"}, | |
3215 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3216 | {bp_thread_event, "thread events"}, |
1900040c | 3217 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3218 | {bp_catch_load, "catch load"}, |
3219 | {bp_catch_unload, "catch unload"}, | |
3220 | {bp_catch_fork, "catch fork"}, | |
3221 | {bp_catch_vfork, "catch vfork"}, | |
3222 | {bp_catch_exec, "catch exec"}, | |
3223 | {bp_catch_catch, "catch catch"}, | |
3224 | {bp_catch_throw, "catch throw"} | |
3225 | }; | |
c4093a6a | 3226 | |
c5aa993b JM |
3227 | static char *bpdisps[] = |
3228 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3229 | static char bpenables[] = "nynny"; |
c906108c | 3230 | char wrap_indent[80]; |
8b93c638 JM |
3231 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3232 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3233 | struct cleanup *bkpt_chain; |
c906108c | 3234 | |
c4093a6a | 3235 | annotate_record (); |
3b31d625 | 3236 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3237 | |
3238 | /* 1 */ | |
3239 | annotate_field (0); | |
8b93c638 | 3240 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3241 | |
3242 | /* 2 */ | |
3243 | annotate_field (1); | |
3244 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3245 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3246 | internal_error (__FILE__, __LINE__, |
3247 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3248 | (int) b->type); |
8b93c638 | 3249 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3250 | |
3251 | /* 3 */ | |
3252 | annotate_field (2); | |
8b93c638 | 3253 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3254 | |
3255 | /* 4 */ | |
3256 | annotate_field (3); | |
b5de0fa7 | 3257 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3258 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3259 | |
3260 | /* 5 and 6 */ | |
3261 | strcpy (wrap_indent, " "); | |
3262 | if (addressprint) | |
75ac9d7b MS |
3263 | { |
3264 | if (TARGET_ADDR_BIT <= 32) | |
3265 | strcat (wrap_indent, " "); | |
3266 | else | |
3267 | strcat (wrap_indent, " "); | |
3268 | } | |
c4093a6a | 3269 | switch (b->type) |
c5aa993b | 3270 | { |
c4093a6a | 3271 | case bp_none: |
8e65ff28 AC |
3272 | internal_error (__FILE__, __LINE__, |
3273 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3274 | break; |
c906108c | 3275 | |
c4093a6a JM |
3276 | case bp_watchpoint: |
3277 | case bp_hardware_watchpoint: | |
3278 | case bp_read_watchpoint: | |
3279 | case bp_access_watchpoint: | |
3280 | /* Field 4, the address, is omitted (which makes the columns | |
3281 | not line up too nicely with the headers, but the effect | |
3282 | is relatively readable). */ | |
8b93c638 JM |
3283 | if (addressprint) |
3284 | ui_out_field_skip (uiout, "addr"); | |
3285 | annotate_field (5); | |
3286 | print_expression (b->exp, stb->stream); | |
3287 | ui_out_field_stream (uiout, "what", stb); | |
c4093a6a JM |
3288 | break; |
3289 | ||
3290 | case bp_catch_load: | |
3291 | case bp_catch_unload: | |
3292 | /* Field 4, the address, is omitted (which makes the columns | |
3293 | not line up too nicely with the headers, but the effect | |
3294 | is relatively readable). */ | |
8b93c638 JM |
3295 | if (addressprint) |
3296 | ui_out_field_skip (uiout, "addr"); | |
3297 | annotate_field (5); | |
3298 | if (b->dll_pathname == NULL) | |
3299 | { | |
3300 | ui_out_field_string (uiout, "what", "<any library>"); | |
3301 | ui_out_spaces (uiout, 1); | |
3302 | } | |
3303 | else | |
3304 | { | |
3305 | ui_out_text (uiout, "library \""); | |
3306 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3307 | ui_out_text (uiout, "\" "); | |
3308 | } | |
c4093a6a JM |
3309 | break; |
3310 | ||
3311 | case bp_catch_fork: | |
3312 | case bp_catch_vfork: | |
3313 | /* Field 4, the address, is omitted (which makes the columns | |
3314 | not line up too nicely with the headers, but the effect | |
3315 | is relatively readable). */ | |
8b93c638 JM |
3316 | if (addressprint) |
3317 | ui_out_field_skip (uiout, "addr"); | |
3318 | annotate_field (5); | |
3319 | if (b->forked_inferior_pid != 0) | |
3320 | { | |
3321 | ui_out_text (uiout, "process "); | |
3322 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3323 | ui_out_spaces (uiout, 1); | |
3324 | } | |
c4093a6a JM |
3325 | |
3326 | case bp_catch_exec: | |
3327 | /* Field 4, the address, is omitted (which makes the columns | |
3328 | not line up too nicely with the headers, but the effect | |
3329 | is relatively readable). */ | |
8b93c638 JM |
3330 | if (addressprint) |
3331 | ui_out_field_skip (uiout, "addr"); | |
3332 | annotate_field (5); | |
3333 | if (b->exec_pathname != NULL) | |
3334 | { | |
3335 | ui_out_text (uiout, "program \""); | |
3336 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3337 | ui_out_text (uiout, "\" "); | |
3338 | } | |
c4093a6a | 3339 | break; |
c906108c | 3340 | |
c4093a6a JM |
3341 | case bp_catch_catch: |
3342 | /* Field 4, the address, is omitted (which makes the columns | |
3343 | not line up too nicely with the headers, but the effect | |
3344 | is relatively readable). */ | |
8b93c638 JM |
3345 | if (addressprint) |
3346 | ui_out_field_skip (uiout, "addr"); | |
3347 | annotate_field (5); | |
3348 | ui_out_field_string (uiout, "what", "exception catch"); | |
3349 | ui_out_spaces (uiout, 1); | |
c4093a6a | 3350 | break; |
c906108c | 3351 | |
c4093a6a JM |
3352 | case bp_catch_throw: |
3353 | /* Field 4, the address, is omitted (which makes the columns | |
3354 | not line up too nicely with the headers, but the effect | |
3355 | is relatively readable). */ | |
8b93c638 JM |
3356 | if (addressprint) |
3357 | ui_out_field_skip (uiout, "addr"); | |
3358 | annotate_field (5); | |
3359 | ui_out_field_string (uiout, "what", "exception throw"); | |
3360 | ui_out_spaces (uiout, 1); | |
c4093a6a JM |
3361 | break; |
3362 | ||
3363 | case bp_breakpoint: | |
3364 | case bp_hardware_breakpoint: | |
3365 | case bp_until: | |
3366 | case bp_finish: | |
3367 | case bp_longjmp: | |
3368 | case bp_longjmp_resume: | |
3369 | case bp_step_resume: | |
3370 | case bp_through_sigtramp: | |
3371 | case bp_watchpoint_scope: | |
3372 | case bp_call_dummy: | |
3373 | case bp_shlib_event: | |
3374 | case bp_thread_event: | |
1900040c | 3375 | case bp_overlay_event: |
8b93c638 JM |
3376 | if (addressprint) |
3377 | { | |
3378 | annotate_field (4); | |
3379 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3380 | } | |
3381 | annotate_field (5); | |
3382 | *last_addr = b->address; | |
3383 | if (b->source_file) | |
3384 | { | |
3385 | sym = find_pc_sect_function (b->address, b->section); | |
3386 | if (sym) | |
3387 | { | |
3388 | ui_out_text (uiout, "in "); | |
3389 | ui_out_field_string (uiout, "func", | |
de5ad195 | 3390 | SYMBOL_PRINT_NAME (sym)); |
8b93c638 JM |
3391 | ui_out_wrap_hint (uiout, wrap_indent); |
3392 | ui_out_text (uiout, " at "); | |
3393 | } | |
3394 | ui_out_field_string (uiout, "file", b->source_file); | |
3395 | ui_out_text (uiout, ":"); | |
3396 | ui_out_field_int (uiout, "line", b->line_number); | |
3397 | } | |
3398 | else | |
3399 | { | |
3400 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3401 | ui_out_field_stream (uiout, "at", stb); | |
3402 | } | |
c4093a6a JM |
3403 | break; |
3404 | } | |
3405 | ||
3406 | if (b->thread != -1) | |
3407 | { | |
8b93c638 JM |
3408 | /* FIXME: This seems to be redundant and lost here; see the |
3409 | "stop only in" line a little further down. */ | |
3410 | ui_out_text (uiout, " thread "); | |
3411 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3412 | } |
3413 | ||
8b93c638 | 3414 | ui_out_text (uiout, "\n"); |
c4093a6a | 3415 | |
818dd999 | 3416 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3417 | { |
3418 | annotate_field (6); | |
8b93c638 | 3419 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3420 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3421 | the frame ID. */ | |
3422 | ui_out_field_core_addr (uiout, "frame", b->frame_id.base); | |
8b93c638 | 3423 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3424 | } |
3425 | ||
3426 | if (b->cond) | |
3427 | { | |
3428 | annotate_field (7); | |
8b93c638 JM |
3429 | ui_out_text (uiout, "\tstop only if "); |
3430 | print_expression (b->cond, stb->stream); | |
3431 | ui_out_field_stream (uiout, "cond", stb); | |
3432 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3433 | } |
3434 | ||
3435 | if (b->thread != -1) | |
3436 | { | |
3437 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3438 | ui_out_text (uiout, "\tstop only in thread "); |
3439 | ui_out_field_int (uiout, "thread", b->thread); | |
3440 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3441 | } |
3442 | ||
3443 | if (show_breakpoint_hit_counts && b->hit_count) | |
3444 | { | |
3445 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3446 | if (ep_is_catchpoint (b)) |
3447 | ui_out_text (uiout, "\tcatchpoint"); | |
3448 | else | |
3449 | ui_out_text (uiout, "\tbreakpoint"); | |
3450 | ui_out_text (uiout, " already hit "); | |
3451 | ui_out_field_int (uiout, "times", b->hit_count); | |
3452 | if (b->hit_count == 1) | |
3453 | ui_out_text (uiout, " time\n"); | |
3454 | else | |
3455 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3456 | } |
3457 | ||
fb40c209 AC |
3458 | /* Output the count also if it is zero, but only if this is |
3459 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3460 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3461 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3462 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3463 | |
c4093a6a JM |
3464 | if (b->ignore_count) |
3465 | { | |
3466 | annotate_field (8); | |
8b93c638 JM |
3467 | ui_out_text (uiout, "\tignore next "); |
3468 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3469 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3470 | } |
3471 | ||
3472 | if ((l = b->commands)) | |
3473 | { | |
3b31d625 EZ |
3474 | struct cleanup *script_chain; |
3475 | ||
c4093a6a | 3476 | annotate_field (9); |
3b31d625 | 3477 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3478 | print_command_lines (uiout, l, 4); |
3b31d625 | 3479 | do_cleanups (script_chain); |
c4093a6a | 3480 | } |
3b31d625 | 3481 | do_cleanups (bkpt_chain); |
8b93c638 | 3482 | do_cleanups (old_chain); |
c4093a6a | 3483 | } |
c5aa993b | 3484 | |
c4093a6a JM |
3485 | struct captured_breakpoint_query_args |
3486 | { | |
3487 | int bnum; | |
3488 | }; | |
c5aa993b | 3489 | |
c4093a6a | 3490 | static int |
2b65245e | 3491 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3492 | { |
3493 | struct captured_breakpoint_query_args *args = data; | |
3494 | register struct breakpoint *b; | |
3495 | CORE_ADDR dummy_addr = 0; | |
3496 | ALL_BREAKPOINTS (b) | |
3497 | { | |
3498 | if (args->bnum == b->number) | |
c5aa993b | 3499 | { |
c4093a6a JM |
3500 | print_one_breakpoint (b, &dummy_addr); |
3501 | return GDB_RC_OK; | |
c5aa993b | 3502 | } |
c4093a6a JM |
3503 | } |
3504 | return GDB_RC_NONE; | |
3505 | } | |
c5aa993b | 3506 | |
c4093a6a | 3507 | enum gdb_rc |
2b65245e | 3508 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3509 | { |
3510 | struct captured_breakpoint_query_args args; | |
3511 | args.bnum = bnum; | |
3512 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3513 | an error. */ | |
2b65245e AC |
3514 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3515 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3516 | } |
c5aa993b | 3517 | |
7f3b0473 AC |
3518 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3519 | catchpoints, et.al.). */ | |
3520 | ||
3521 | static int | |
3522 | user_settable_breakpoint (const struct breakpoint *b) | |
3523 | { | |
3524 | return (b->type == bp_breakpoint | |
3525 | || b->type == bp_catch_load | |
3526 | || b->type == bp_catch_unload | |
3527 | || b->type == bp_catch_fork | |
3528 | || b->type == bp_catch_vfork | |
3529 | || b->type == bp_catch_exec | |
3530 | || b->type == bp_catch_catch | |
3531 | || b->type == bp_catch_throw | |
3532 | || b->type == bp_hardware_breakpoint | |
3533 | || b->type == bp_watchpoint | |
3534 | || b->type == bp_read_watchpoint | |
3535 | || b->type == bp_access_watchpoint | |
3536 | || b->type == bp_hardware_watchpoint); | |
3537 | } | |
3538 | ||
3539 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3540 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3541 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3542 | |
c4093a6a | 3543 | static void |
fba45db2 | 3544 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3545 | { |
3546 | register struct breakpoint *b; | |
3547 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
7f3b0473 | 3548 | int nr_printable_breakpoints; |
3b31d625 | 3549 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3550 | |
7f3b0473 AC |
3551 | /* Compute the number of rows in the table. */ |
3552 | nr_printable_breakpoints = 0; | |
3553 | ALL_BREAKPOINTS (b) | |
3554 | if (bnum == -1 | |
3555 | || bnum == b->number) | |
3556 | { | |
3557 | if (allflag || user_settable_breakpoint (b)) | |
3558 | nr_printable_breakpoints++; | |
3559 | } | |
3560 | ||
8b93c638 | 3561 | if (addressprint) |
3b31d625 EZ |
3562 | bkpttbl_chain |
3563 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3564 | "BreakpointTable"); | |
8b93c638 | 3565 | else |
3b31d625 EZ |
3566 | bkpttbl_chain |
3567 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3568 | "BreakpointTable"); | |
8b93c638 | 3569 | |
7f3b0473 | 3570 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3571 | annotate_breakpoints_headers (); |
3572 | if (nr_printable_breakpoints > 0) | |
3573 | annotate_field (0); | |
3574 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3575 | if (nr_printable_breakpoints > 0) | |
3576 | annotate_field (1); | |
3577 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3578 | if (nr_printable_breakpoints > 0) | |
3579 | annotate_field (2); | |
3580 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3581 | if (nr_printable_breakpoints > 0) | |
3582 | annotate_field (3); | |
3583 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3584 | if (addressprint) | |
7f3b0473 | 3585 | { |
d7faa9e7 AC |
3586 | if (nr_printable_breakpoints > 0) |
3587 | annotate_field (4); | |
7f3b0473 | 3588 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3589 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3590 | else |
b25959ec | 3591 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3592 | } |
d7faa9e7 AC |
3593 | if (nr_printable_breakpoints > 0) |
3594 | annotate_field (5); | |
3595 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3596 | ui_out_table_body (uiout); | |
3597 | if (nr_printable_breakpoints > 0) | |
3598 | annotate_breakpoints_table (); | |
7f3b0473 | 3599 | |
c4093a6a JM |
3600 | ALL_BREAKPOINTS (b) |
3601 | if (bnum == -1 | |
3602 | || bnum == b->number) | |
3603 | { | |
3604 | /* We only print out user settable breakpoints unless the | |
3605 | allflag is set. */ | |
7f3b0473 AC |
3606 | if (allflag || user_settable_breakpoint (b)) |
3607 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3608 | } |
3609 | ||
3b31d625 | 3610 | do_cleanups (bkpttbl_chain); |
698384cd | 3611 | |
7f3b0473 | 3612 | if (nr_printable_breakpoints == 0) |
c906108c | 3613 | { |
8b93c638 JM |
3614 | if (bnum == -1) |
3615 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3616 | else | |
3617 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3618 | bnum); | |
c906108c SS |
3619 | } |
3620 | else | |
c4093a6a JM |
3621 | { |
3622 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3623 | that a comparison of an unsigned with -1 is always false. */ | |
3624 | if (last_addr != (CORE_ADDR) -1) | |
3625 | set_next_address (last_addr); | |
3626 | } | |
c906108c | 3627 | |
c4093a6a JM |
3628 | /* FIXME? Should this be moved up so that it is only called when |
3629 | there have been breakpoints? */ | |
c906108c SS |
3630 | annotate_breakpoints_table_end (); |
3631 | } | |
3632 | ||
3633 | /* ARGSUSED */ | |
3634 | static void | |
fba45db2 | 3635 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3636 | { |
3637 | int bnum = -1; | |
3638 | ||
3639 | if (bnum_exp) | |
bb518678 | 3640 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3641 | |
3642 | breakpoint_1 (bnum, 0); | |
3643 | } | |
3644 | ||
c906108c | 3645 | /* ARGSUSED */ |
7a292a7a | 3646 | static void |
fba45db2 | 3647 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3648 | { |
3649 | int bnum = -1; | |
3650 | ||
3651 | if (bnum_exp) | |
bb518678 | 3652 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3653 | |
3654 | breakpoint_1 (bnum, 1); | |
3655 | } | |
3656 | ||
c906108c SS |
3657 | /* Print a message describing any breakpoints set at PC. */ |
3658 | ||
3659 | static void | |
fba45db2 | 3660 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3661 | { |
3662 | register int others = 0; | |
3663 | register struct breakpoint *b; | |
3664 | ||
3665 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3666 | if (b->address == pc) /* address match / overlay match */ |
3667 | if (!overlay_debugging || b->section == section) | |
3668 | others++; | |
c906108c SS |
3669 | if (others > 0) |
3670 | { | |
3671 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3672 | ALL_BREAKPOINTS (b) | |
9f04af04 MS |
3673 | if (b->address == pc) /* address match / overlay match */ |
3674 | if (!overlay_debugging || b->section == section) | |
3675 | { | |
3676 | others--; | |
3677 | printf_filtered ("%d%s%s ", | |
3678 | b->number, | |
3679 | ((b->enable_state == bp_disabled || | |
3680 | b->enable_state == bp_shlib_disabled || | |
3681 | b->enable_state == bp_call_disabled) | |
3682 | ? " (disabled)" | |
3683 | : b->enable_state == bp_permanent | |
3684 | ? " (permanent)" | |
3685 | : ""), | |
3686 | (others > 1) ? "," | |
3687 | : ((others == 1) ? " and" : "")); | |
3688 | } | |
c906108c SS |
3689 | printf_filtered ("also set at pc "); |
3690 | print_address_numeric (pc, 1, gdb_stdout); | |
3691 | printf_filtered (".\n"); | |
3692 | } | |
3693 | } | |
3694 | \f | |
3695 | /* Set the default place to put a breakpoint | |
3696 | for the `break' command with no arguments. */ | |
3697 | ||
3698 | void | |
fba45db2 KB |
3699 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3700 | int line) | |
c906108c SS |
3701 | { |
3702 | default_breakpoint_valid = valid; | |
3703 | default_breakpoint_address = addr; | |
3704 | default_breakpoint_symtab = symtab; | |
3705 | default_breakpoint_line = line; | |
3706 | } | |
3707 | ||
e4f237da KB |
3708 | /* Return true iff it is meaningful to use the address member of |
3709 | BPT. For some breakpoint types, the address member is irrelevant | |
3710 | and it makes no sense to attempt to compare it to other addresses | |
3711 | (or use it for any other purpose either). | |
3712 | ||
3713 | More specifically, each of the following breakpoint types will always | |
3714 | have a zero valued address and we don't want check_duplicates() to mark | |
3715 | breakpoints of any of these types to be a duplicate of an actual | |
3716 | breakpoint at address zero: | |
3717 | ||
3718 | bp_watchpoint | |
3719 | bp_hardware_watchpoint | |
3720 | bp_read_watchpoint | |
3721 | bp_access_watchpoint | |
3722 | bp_catch_exec | |
3723 | bp_longjmp_resume | |
3724 | bp_catch_fork | |
3725 | bp_catch_vork */ | |
3726 | ||
3727 | static int | |
3728 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3729 | { | |
3730 | enum bptype type = bpt->type; | |
3731 | ||
3732 | return (type != bp_watchpoint | |
3733 | && type != bp_hardware_watchpoint | |
3734 | && type != bp_read_watchpoint | |
3735 | && type != bp_access_watchpoint | |
3736 | && type != bp_catch_exec | |
3737 | && type != bp_longjmp_resume | |
3738 | && type != bp_catch_fork | |
3739 | && type != bp_catch_vfork); | |
3740 | } | |
3741 | ||
9f60f21b | 3742 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3743 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3744 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3745 | If we have a permanent breakpoint at the same place as BPT, make |
3746 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3747 | |
3748 | static void | |
9f60f21b | 3749 | check_duplicates (struct breakpoint *bpt) |
c906108c SS |
3750 | { |
3751 | register struct breakpoint *b; | |
3752 | register int count = 0; | |
c2c6d25f | 3753 | struct breakpoint *perm_bp = 0; |
9f60f21b JB |
3754 | CORE_ADDR address = bpt->address; |
3755 | asection *section = bpt->section; | |
c906108c | 3756 | |
e4f237da | 3757 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3758 | return; |
3759 | ||
3760 | ALL_BREAKPOINTS (b) | |
b5de0fa7 EZ |
3761 | if (b->enable_state != bp_disabled |
3762 | && b->enable_state != bp_shlib_disabled | |
3763 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3764 | && b->address == address /* address / overlay match */ |
3765 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3766 | && breakpoint_address_is_meaningful (b)) |
c5aa993b | 3767 | { |
c2c6d25f | 3768 | /* Have we found a permanent breakpoint? */ |
b5de0fa7 | 3769 | if (b->enable_state == bp_permanent) |
c2c6d25f JM |
3770 | { |
3771 | perm_bp = b; | |
3772 | break; | |
3773 | } | |
3774 | ||
c5aa993b JM |
3775 | count++; |
3776 | b->duplicate = count > 1; | |
3777 | } | |
c2c6d25f JM |
3778 | |
3779 | /* If we found a permanent breakpoint at this address, go over the | |
3780 | list again and declare all the other breakpoints there to be the | |
3781 | duplicates. */ | |
3782 | if (perm_bp) | |
3783 | { | |
3784 | perm_bp->duplicate = 0; | |
3785 | ||
3786 | /* Permanent breakpoint should always be inserted. */ | |
3787 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3788 | internal_error (__FILE__, __LINE__, |
3789 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3790 | "actually inserted"); |
3791 | ||
3792 | ALL_BREAKPOINTS (b) | |
3793 | if (b != perm_bp) | |
3794 | { | |
3795 | if (b->inserted) | |
8e65ff28 AC |
3796 | internal_error (__FILE__, __LINE__, |
3797 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3798 | "a permanent breakpoint"); |
3799 | ||
b5de0fa7 EZ |
3800 | if (b->enable_state != bp_disabled |
3801 | && b->enable_state != bp_shlib_disabled | |
3802 | && b->enable_state != bp_call_disabled | |
9f04af04 MS |
3803 | && b->address == address /* address / overlay match */ |
3804 | && (!overlay_debugging || b->section == section) | |
e4f237da | 3805 | && breakpoint_address_is_meaningful (b)) |
c2c6d25f JM |
3806 | b->duplicate = 1; |
3807 | } | |
3808 | } | |
c906108c SS |
3809 | } |
3810 | ||
4d28f7a8 KB |
3811 | /* set_raw_breakpoint() is a low level routine for allocating and |
3812 | partially initializing a breakpoint of type BPTYPE. The newly | |
3813 | created breakpoint's address, section, source file name, and line | |
3814 | number are provided by SAL. The newly created and partially | |
3815 | initialized breakpoint is added to the breakpoint chain and | |
3816 | is also returned as the value of this function. | |
c906108c | 3817 | |
4d28f7a8 KB |
3818 | It is expected that the caller will complete the initialization of |
3819 | the newly created breakpoint struct as well as output any status | |
3820 | information regarding the creation of a new breakpoint. In | |
3821 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
3822 | number! Care should be taken to not allow an error() to occur | |
3823 | prior to completing the initialization of the breakpoint. If this | |
3824 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
3825 | |
3826 | struct breakpoint * | |
4d28f7a8 | 3827 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c SS |
3828 | { |
3829 | register struct breakpoint *b, *b1; | |
3830 | ||
3831 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3832 | memset (b, 0, sizeof (*b)); | |
3833 | b->address = sal.pc; | |
3834 | if (sal.symtab == NULL) | |
3835 | b->source_file = NULL; | |
3836 | else | |
3837 | b->source_file = savestring (sal.symtab->filename, | |
3838 | strlen (sal.symtab->filename)); | |
3839 | b->section = sal.section; | |
4d28f7a8 | 3840 | b->type = bptype; |
c906108c SS |
3841 | b->language = current_language->la_language; |
3842 | b->input_radix = input_radix; | |
3843 | b->thread = -1; | |
3844 | b->line_number = sal.line; | |
b5de0fa7 | 3845 | b->enable_state = bp_enabled; |
c906108c SS |
3846 | b->next = 0; |
3847 | b->silent = 0; | |
3848 | b->ignore_count = 0; | |
3849 | b->commands = NULL; | |
818dd999 | 3850 | b->frame_id = null_frame_id; |
c906108c SS |
3851 | b->dll_pathname = NULL; |
3852 | b->triggered_dll_pathname = NULL; | |
3853 | b->forked_inferior_pid = 0; | |
3854 | b->exec_pathname = NULL; | |
3855 | ||
3856 | /* Add this breakpoint to the end of the chain | |
3857 | so that a list of breakpoints will come out in order | |
3858 | of increasing numbers. */ | |
3859 | ||
3860 | b1 = breakpoint_chain; | |
3861 | if (b1 == 0) | |
3862 | breakpoint_chain = b; | |
3863 | else | |
3864 | { | |
3865 | while (b1->next) | |
3866 | b1 = b1->next; | |
3867 | b1->next = b; | |
3868 | } | |
3869 | ||
9f60f21b | 3870 | check_duplicates (b); |
c906108c SS |
3871 | breakpoints_changed (); |
3872 | ||
3873 | return b; | |
3874 | } | |
3875 | ||
c2c6d25f JM |
3876 | |
3877 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3878 | instruction, hard-wired into the inferior's code. */ | |
3879 | void | |
3880 | make_breakpoint_permanent (struct breakpoint *b) | |
3881 | { | |
b5de0fa7 | 3882 | b->enable_state = bp_permanent; |
c2c6d25f JM |
3883 | |
3884 | /* By definition, permanent breakpoints are already present in the code. */ | |
3885 | b->inserted = 1; | |
3886 | } | |
3887 | ||
1900040c MS |
3888 | static struct breakpoint * |
3889 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
3890 | { | |
3891 | static int internal_breakpoint_number = -1; | |
3892 | struct symtab_and_line sal; | |
3893 | struct breakpoint *b; | |
3894 | ||
fe39c653 | 3895 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
3896 | |
3897 | sal.pc = address; | |
3898 | sal.section = find_pc_overlay (sal.pc); | |
3899 | ||
3900 | b = set_raw_breakpoint (sal, type); | |
3901 | b->number = internal_breakpoint_number--; | |
3902 | b->disposition = disp_donttouch; | |
3903 | ||
3904 | return b; | |
3905 | } | |
3906 | ||
c906108c SS |
3907 | |
3908 | static void | |
fba45db2 | 3909 | create_longjmp_breakpoint (char *func_name) |
c906108c | 3910 | { |
c906108c | 3911 | struct breakpoint *b; |
1900040c | 3912 | struct minimal_symbol *m; |
c906108c | 3913 | |
1900040c MS |
3914 | if (func_name == NULL) |
3915 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
3916 | else | |
c906108c | 3917 | { |
1900040c | 3918 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) |
c906108c | 3919 | return; |
1900040c MS |
3920 | |
3921 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 3922 | } |
c906108c | 3923 | |
b5de0fa7 | 3924 | b->enable_state = bp_disabled; |
c906108c SS |
3925 | b->silent = 1; |
3926 | if (func_name) | |
4fcf66da | 3927 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3928 | } |
3929 | ||
53a5351d JM |
3930 | /* Call this routine when stepping and nexting to enable a breakpoint |
3931 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3932 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3933 | ||
3934 | void | |
fba45db2 | 3935 | enable_longjmp_breakpoint (void) |
c906108c SS |
3936 | { |
3937 | register struct breakpoint *b; | |
3938 | ||
3939 | ALL_BREAKPOINTS (b) | |
3940 | if (b->type == bp_longjmp) | |
c5aa993b | 3941 | { |
b5de0fa7 | 3942 | b->enable_state = bp_enabled; |
9f60f21b | 3943 | check_duplicates (b); |
c5aa993b | 3944 | } |
c906108c SS |
3945 | } |
3946 | ||
3947 | void | |
fba45db2 | 3948 | disable_longjmp_breakpoint (void) |
c906108c SS |
3949 | { |
3950 | register struct breakpoint *b; | |
3951 | ||
3952 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3953 | if (b->type == bp_longjmp |
c906108c | 3954 | || b->type == bp_longjmp_resume) |
c5aa993b | 3955 | { |
b5de0fa7 | 3956 | b->enable_state = bp_disabled; |
9f60f21b | 3957 | check_duplicates (b); |
c5aa993b | 3958 | } |
c906108c SS |
3959 | } |
3960 | ||
1900040c MS |
3961 | static void |
3962 | create_overlay_event_breakpoint (char *func_name) | |
3963 | { | |
3964 | struct breakpoint *b; | |
3965 | struct minimal_symbol *m; | |
3966 | ||
3967 | if ((m = lookup_minimal_symbol_text (func_name, NULL, NULL)) == NULL) | |
3968 | return; | |
3969 | ||
3970 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
3971 | bp_overlay_event); | |
3972 | b->addr_string = xstrdup (func_name); | |
3973 | ||
3974 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
3975 | { |
3976 | b->enable_state = bp_enabled; | |
3977 | overlay_events_enabled = 1; | |
3978 | } | |
1900040c | 3979 | else |
c02f5703 MS |
3980 | { |
3981 | b->enable_state = bp_disabled; | |
3982 | overlay_events_enabled = 0; | |
3983 | } | |
1900040c MS |
3984 | } |
3985 | ||
3986 | void | |
3987 | enable_overlay_breakpoints (void) | |
3988 | { | |
3989 | register struct breakpoint *b; | |
3990 | ||
3991 | ALL_BREAKPOINTS (b) | |
3992 | if (b->type == bp_overlay_event) | |
3993 | { | |
3994 | b->enable_state = bp_enabled; | |
3995 | check_duplicates (b); | |
c02f5703 | 3996 | overlay_events_enabled = 1; |
1900040c MS |
3997 | } |
3998 | } | |
3999 | ||
4000 | void | |
4001 | disable_overlay_breakpoints (void) | |
4002 | { | |
4003 | register struct breakpoint *b; | |
4004 | ||
4005 | ALL_BREAKPOINTS (b) | |
4006 | if (b->type == bp_overlay_event) | |
4007 | { | |
4008 | b->enable_state = bp_disabled; | |
4009 | check_duplicates (b); | |
c02f5703 | 4010 | overlay_events_enabled = 0; |
1900040c MS |
4011 | } |
4012 | } | |
4013 | ||
c4093a6a | 4014 | struct breakpoint * |
fba45db2 | 4015 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4016 | { |
4017 | struct breakpoint *b; | |
c4093a6a | 4018 | |
1900040c | 4019 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4020 | |
b5de0fa7 | 4021 | b->enable_state = bp_enabled; |
c4093a6a | 4022 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
d8ef46f5 | 4023 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); |
c4093a6a JM |
4024 | |
4025 | return b; | |
4026 | } | |
4027 | ||
4028 | void | |
4029 | remove_thread_event_breakpoints (void) | |
4030 | { | |
4031 | struct breakpoint *b, *temp; | |
4032 | ||
4033 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4034 | if (b->type == bp_thread_event) | |
4035 | delete_breakpoint (b); | |
4036 | } | |
4037 | ||
c906108c SS |
4038 | #ifdef SOLIB_ADD |
4039 | void | |
fba45db2 | 4040 | remove_solib_event_breakpoints (void) |
c906108c SS |
4041 | { |
4042 | register struct breakpoint *b, *temp; | |
4043 | ||
4044 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4045 | if (b->type == bp_shlib_event) | |
3172dc30 | 4046 | delete_breakpoint (b); |
c906108c SS |
4047 | } |
4048 | ||
c2c6d25f | 4049 | struct breakpoint * |
fba45db2 | 4050 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4051 | { |
4052 | struct breakpoint *b; | |
c2c6d25f | 4053 | |
1900040c | 4054 | b = create_internal_breakpoint (address, bp_shlib_event); |
c2c6d25f | 4055 | return b; |
c906108c SS |
4056 | } |
4057 | ||
104c1213 JM |
4058 | /* Disable any breakpoints that are on code in shared libraries. Only |
4059 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4060 | ||
c906108c | 4061 | void |
fba45db2 | 4062 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4063 | { |
c5aa993b JM |
4064 | struct breakpoint *b; |
4065 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4066 | |
4067 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4068 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4069 | { |
c906108c | 4070 | #if defined (PC_SOLIB) |
c5aa993b JM |
4071 | if (((b->type == bp_breakpoint) || |
4072 | (b->type == bp_hardware_breakpoint)) && | |
b5de0fa7 | 4073 | b->enable_state == bp_enabled && |
c5aa993b JM |
4074 | !b->duplicate && |
4075 | PC_SOLIB (b->address)) | |
4076 | { | |
b5de0fa7 | 4077 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
4078 | if (!silent) |
4079 | { | |
4080 | if (!disabled_shlib_breaks) | |
4081 | { | |
4082 | target_terminal_ours_for_output (); | |
53a5351d | 4083 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4084 | } |
4085 | disabled_shlib_breaks = 1; | |
53a5351d | 4086 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4087 | } |
4088 | } | |
c906108c | 4089 | #endif |
c5aa993b | 4090 | } |
c906108c SS |
4091 | } |
4092 | ||
4093 | /* Try to reenable any breakpoints in shared libraries. */ | |
4094 | void | |
fba45db2 | 4095 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4096 | { |
4097 | struct breakpoint *b; | |
4098 | ||
4099 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 4100 | if (b->enable_state == bp_shlib_disabled) |
c5aa993b JM |
4101 | { |
4102 | char buf[1]; | |
c906108c | 4103 | |
c5aa993b JM |
4104 | /* Do not reenable the breakpoint if the shared library |
4105 | is still not mapped in. */ | |
4106 | if (target_read_memory (b->address, buf, 1) == 0) | |
b5de0fa7 | 4107 | b->enable_state = bp_enabled; |
c5aa993b | 4108 | } |
c906108c SS |
4109 | } |
4110 | ||
4111 | #endif | |
4112 | ||
4113 | static void | |
fba45db2 KB |
4114 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4115 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4116 | { |
c5aa993b | 4117 | struct breakpoint *b; |
c906108c | 4118 | struct symtabs_and_lines sals; |
c5aa993b JM |
4119 | struct cleanup *old_chain; |
4120 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4121 | char *addr_start = hookname; |
4122 | char *addr_end = NULL; | |
4123 | char **canonical = (char **) NULL; | |
4124 | int thread = -1; /* All threads. */ | |
4125 | ||
c906108c SS |
4126 | /* Set a breakpoint on the specified hook. */ |
4127 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4128 | addr_end = hookname; | |
c5aa993b | 4129 | |
c906108c SS |
4130 | if (sals.nelts == 0) |
4131 | { | |
4132 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4133 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4134 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4135 | return; | |
4136 | } | |
4137 | if (sals.nelts != 1) | |
4138 | { | |
53a5351d | 4139 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4140 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4141 | return; | |
4142 | } | |
4143 | ||
53a5351d JM |
4144 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4145 | in case the following errors out. */ | |
b8c9b27d | 4146 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4147 | if (canonical != (char **) NULL) |
c906108c | 4148 | { |
b8c9b27d | 4149 | make_cleanup (xfree, canonical); |
c906108c SS |
4150 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4151 | if (canonical[0] != NULL) | |
b8c9b27d | 4152 | make_cleanup (xfree, canonical[0]); |
c906108c | 4153 | } |
c5aa993b | 4154 | |
c906108c | 4155 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4156 | |
c906108c | 4157 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4158 | if (canonical != (char **) NULL) |
c906108c | 4159 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4160 | |
4d28f7a8 | 4161 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4162 | set_breakpoint_count (breakpoint_count + 1); |
4163 | b->number = breakpoint_count; | |
4164 | b->cond = NULL; | |
53a5351d JM |
4165 | b->cond_string = (cond_string == NULL) ? |
4166 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4167 | b->thread = thread; |
c5aa993b JM |
4168 | |
4169 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4170 | b->addr_string = canonical[0]; |
4171 | else if (addr_start) | |
4172 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4173 | |
b5de0fa7 EZ |
4174 | b->enable_state = bp_enabled; |
4175 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4176 | |
c906108c SS |
4177 | if (dll_pathname == NULL) |
4178 | b->dll_pathname = NULL; | |
4179 | else | |
4180 | { | |
4181 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4182 | strcpy (b->dll_pathname, dll_pathname); | |
4183 | } | |
c5aa993b | 4184 | |
c906108c SS |
4185 | mention (b); |
4186 | do_cleanups (old_chain); | |
4187 | } | |
4188 | ||
4189 | void | |
fba45db2 KB |
4190 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4191 | char *dll_pathname, char *cond_string) | |
c906108c | 4192 | { |
53a5351d JM |
4193 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4194 | cond_string, bp_catch_load); | |
c906108c SS |
4195 | } |
4196 | ||
4197 | void | |
fba45db2 KB |
4198 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4199 | char *dll_pathname, char *cond_string) | |
c906108c | 4200 | { |
53a5351d JM |
4201 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4202 | cond_string, bp_catch_unload); | |
c906108c SS |
4203 | } |
4204 | ||
4205 | static void | |
fba45db2 KB |
4206 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4207 | enum bptype bp_kind) | |
c906108c | 4208 | { |
c5aa993b JM |
4209 | struct symtab_and_line sal; |
4210 | struct breakpoint *b; | |
4211 | int thread = -1; /* All threads. */ | |
4212 | ||
fe39c653 | 4213 | init_sal (&sal); |
c906108c SS |
4214 | sal.pc = 0; |
4215 | sal.symtab = NULL; | |
4216 | sal.line = 0; | |
c5aa993b | 4217 | |
4d28f7a8 | 4218 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4219 | set_breakpoint_count (breakpoint_count + 1); |
4220 | b->number = breakpoint_count; | |
4221 | b->cond = NULL; | |
53a5351d JM |
4222 | b->cond_string = (cond_string == NULL) ? |
4223 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4224 | b->thread = thread; |
4225 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4226 | b->enable_state = bp_enabled; |
4227 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4228 | b->forked_inferior_pid = 0; |
c5aa993b | 4229 | |
c906108c SS |
4230 | mention (b); |
4231 | } | |
4232 | ||
4233 | void | |
fba45db2 | 4234 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4235 | { |
4236 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4237 | } | |
c5aa993b | 4238 | |
c906108c | 4239 | void |
fba45db2 | 4240 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4241 | { |
4242 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4243 | } | |
4244 | ||
4245 | void | |
fba45db2 | 4246 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4247 | { |
c5aa993b JM |
4248 | struct symtab_and_line sal; |
4249 | struct breakpoint *b; | |
4250 | int thread = -1; /* All threads. */ | |
c906108c | 4251 | |
fe39c653 | 4252 | init_sal (&sal); |
c906108c SS |
4253 | sal.pc = 0; |
4254 | sal.symtab = NULL; | |
4255 | sal.line = 0; | |
4256 | ||
4d28f7a8 | 4257 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4258 | set_breakpoint_count (breakpoint_count + 1); |
4259 | b->number = breakpoint_count; | |
4260 | b->cond = NULL; | |
53a5351d JM |
4261 | b->cond_string = (cond_string == NULL) ? |
4262 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4263 | b->thread = thread; |
4264 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4265 | b->enable_state = bp_enabled; |
4266 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4267 | |
c906108c SS |
4268 | mention (b); |
4269 | } | |
4270 | ||
4271 | static int | |
fba45db2 | 4272 | hw_breakpoint_used_count (void) |
c906108c SS |
4273 | { |
4274 | register struct breakpoint *b; | |
4275 | int i = 0; | |
4276 | ||
4277 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4278 | { |
b5de0fa7 | 4279 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4280 | i++; |
4281 | } | |
c906108c SS |
4282 | |
4283 | return i; | |
4284 | } | |
4285 | ||
4286 | static int | |
fba45db2 | 4287 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4288 | { |
4289 | register struct breakpoint *b; | |
4290 | int i = 0; | |
4291 | ||
4292 | *other_type_used = 0; | |
4293 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4294 | { |
b5de0fa7 | 4295 | if (b->enable_state == bp_enabled) |
c5aa993b JM |
4296 | { |
4297 | if (b->type == type) | |
4298 | i++; | |
4299 | else if ((b->type == bp_hardware_watchpoint || | |
4300 | b->type == bp_read_watchpoint || | |
4301 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 4302 | && b->enable_state == bp_enabled) |
c5aa993b JM |
4303 | *other_type_used = 1; |
4304 | } | |
4305 | } | |
c906108c SS |
4306 | return i; |
4307 | } | |
4308 | ||
53a5351d JM |
4309 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4310 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4311 | |
53a5351d JM |
4312 | FIXME - This ought to be done by setting a temporary breakpoint |
4313 | that gets deleted automatically... */ | |
c906108c SS |
4314 | |
4315 | void | |
818dd999 | 4316 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c SS |
4317 | { |
4318 | register struct breakpoint *b; | |
4319 | ||
4320 | ALL_BREAKPOINTS (b) | |
4321 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4322 | { |
4323 | b->address = pc; | |
b5de0fa7 | 4324 | b->enable_state = bp_enabled; |
818dd999 | 4325 | b->frame_id = frame_id; |
9f60f21b | 4326 | check_duplicates (b); |
c5aa993b JM |
4327 | return; |
4328 | } | |
c906108c SS |
4329 | } |
4330 | ||
4331 | void | |
fba45db2 | 4332 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4333 | { |
c5aa993b | 4334 | struct breakpoint *b; |
c906108c SS |
4335 | |
4336 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4337 | { |
4338 | if (((b->type == bp_watchpoint) | |
4339 | || (b->type == bp_hardware_watchpoint) | |
4340 | || (b->type == bp_read_watchpoint) | |
4341 | || (b->type == bp_access_watchpoint) | |
4342 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4343 | && (b->enable_state == bp_enabled)) |
c5aa993b | 4344 | { |
b5de0fa7 | 4345 | b->enable_state = bp_call_disabled; |
9f60f21b | 4346 | check_duplicates (b); |
c5aa993b JM |
4347 | } |
4348 | } | |
c906108c SS |
4349 | } |
4350 | ||
4351 | void | |
fba45db2 | 4352 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4353 | { |
c5aa993b | 4354 | struct breakpoint *b; |
c906108c SS |
4355 | |
4356 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4357 | { |
4358 | if (((b->type == bp_watchpoint) | |
4359 | || (b->type == bp_hardware_watchpoint) | |
4360 | || (b->type == bp_read_watchpoint) | |
4361 | || (b->type == bp_access_watchpoint) | |
4362 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4363 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4364 | { |
b5de0fa7 | 4365 | b->enable_state = bp_enabled; |
9f60f21b | 4366 | check_duplicates (b); |
c5aa993b JM |
4367 | } |
4368 | } | |
c906108c SS |
4369 | } |
4370 | ||
4371 | ||
4372 | /* Set a breakpoint that will evaporate an end of command | |
4373 | at address specified by SAL. | |
4374 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4375 | ||
4376 | struct breakpoint * | |
818dd999 | 4377 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4378 | enum bptype type) |
c906108c SS |
4379 | { |
4380 | register struct breakpoint *b; | |
4d28f7a8 | 4381 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4382 | b->enable_state = bp_enabled; |
4383 | b->disposition = disp_donttouch; | |
818dd999 | 4384 | b->frame_id = frame_id; |
c906108c SS |
4385 | |
4386 | /* If we're debugging a multi-threaded program, then we | |
4387 | want momentary breakpoints to be active in only a | |
4388 | single thread of control. */ | |
39f77062 KB |
4389 | if (in_thread_list (inferior_ptid)) |
4390 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4391 | |
4392 | return b; | |
4393 | } | |
c906108c | 4394 | \f |
c5aa993b | 4395 | |
c906108c SS |
4396 | /* Tell the user we have just set a breakpoint B. */ |
4397 | ||
4398 | static void | |
fba45db2 | 4399 | mention (struct breakpoint *b) |
c906108c SS |
4400 | { |
4401 | int say_where = 0; | |
3b31d625 | 4402 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4403 | struct ui_stream *stb; |
4404 | ||
4405 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4406 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4407 | |
4408 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4409 | watchpoint) other than breakpoint creation. It should be possible to | |
4410 | clean this up and at the same time replace the random calls to | |
4411 | breakpoint_changed with this hook, as has already been done for | |
4412 | delete_breakpoint_hook and so on. */ | |
4413 | if (create_breakpoint_hook) | |
4414 | create_breakpoint_hook (b); | |
104c1213 | 4415 | breakpoint_create_event (b->number); |
c906108c SS |
4416 | |
4417 | switch (b->type) | |
4418 | { | |
4419 | case bp_none: | |
4420 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4421 | break; | |
8b93c638 JM |
4422 | case bp_watchpoint: |
4423 | ui_out_text (uiout, "Watchpoint "); | |
3b31d625 | 4424 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); |
8b93c638 JM |
4425 | ui_out_field_int (uiout, "number", b->number); |
4426 | ui_out_text (uiout, ": "); | |
4427 | print_expression (b->exp, stb->stream); | |
4428 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4429 | do_cleanups (ui_out_chain); |
8b93c638 JM |
4430 | break; |
4431 | case bp_hardware_watchpoint: | |
4432 | ui_out_text (uiout, "Hardware watchpoint "); | |
3b31d625 | 4433 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); |
8b93c638 JM |
4434 | ui_out_field_int (uiout, "number", b->number); |
4435 | ui_out_text (uiout, ": "); | |
4436 | print_expression (b->exp, stb->stream); | |
4437 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4438 | do_cleanups (ui_out_chain); |
8b93c638 | 4439 | break; |
8b93c638 JM |
4440 | case bp_read_watchpoint: |
4441 | ui_out_text (uiout, "Hardware read watchpoint "); | |
3b31d625 | 4442 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); |
8b93c638 JM |
4443 | ui_out_field_int (uiout, "number", b->number); |
4444 | ui_out_text (uiout, ": "); | |
4445 | print_expression (b->exp, stb->stream); | |
4446 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4447 | do_cleanups (ui_out_chain); |
8b93c638 JM |
4448 | break; |
4449 | case bp_access_watchpoint: | |
4450 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
3b31d625 | 4451 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); |
8b93c638 JM |
4452 | ui_out_field_int (uiout, "number", b->number); |
4453 | ui_out_text (uiout, ": "); | |
4454 | print_expression (b->exp, stb->stream); | |
4455 | ui_out_field_stream (uiout, "exp", stb); | |
3b31d625 | 4456 | do_cleanups (ui_out_chain); |
8b93c638 | 4457 | break; |
c906108c | 4458 | case bp_breakpoint: |
9dc5e2a9 | 4459 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4460 | { |
4461 | say_where = 0; | |
4462 | break; | |
4463 | } | |
c906108c SS |
4464 | printf_filtered ("Breakpoint %d", b->number); |
4465 | say_where = 1; | |
4466 | break; | |
4467 | case bp_hardware_breakpoint: | |
9dc5e2a9 | 4468 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
4469 | { |
4470 | say_where = 0; | |
4471 | break; | |
4472 | } | |
c906108c SS |
4473 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4474 | say_where = 1; | |
4475 | break; | |
4476 | case bp_catch_load: | |
4477 | case bp_catch_unload: | |
4478 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4479 | b->number, |
4480 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4481 | (b->dll_pathname != NULL) ? |
4482 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4483 | break; |
4484 | case bp_catch_fork: | |
4485 | case bp_catch_vfork: | |
4486 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4487 | b->number, |
4488 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4489 | break; |
4490 | case bp_catch_exec: | |
4491 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4492 | b->number); |
c906108c SS |
4493 | break; |
4494 | case bp_catch_catch: | |
4495 | case bp_catch_throw: | |
4496 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4497 | b->number, |
4498 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4499 | break; |
4500 | ||
4501 | case bp_until: | |
4502 | case bp_finish: | |
4503 | case bp_longjmp: | |
4504 | case bp_longjmp_resume: | |
4505 | case bp_step_resume: | |
4506 | case bp_through_sigtramp: | |
4507 | case bp_call_dummy: | |
4508 | case bp_watchpoint_scope: | |
4509 | case bp_shlib_event: | |
c4093a6a | 4510 | case bp_thread_event: |
1900040c | 4511 | case bp_overlay_event: |
c906108c SS |
4512 | break; |
4513 | } | |
4514 | if (say_where) | |
4515 | { | |
4516 | if (addressprint || b->source_file == NULL) | |
4517 | { | |
4518 | printf_filtered (" at "); | |
4519 | print_address_numeric (b->address, 1, gdb_stdout); | |
4520 | } | |
4521 | if (b->source_file) | |
4522 | printf_filtered (": file %s, line %d.", | |
4523 | b->source_file, b->line_number); | |
c906108c | 4524 | } |
8b93c638 | 4525 | do_cleanups (old_chain); |
9dc5e2a9 | 4526 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4527 | return; |
c906108c SS |
4528 | printf_filtered ("\n"); |
4529 | } | |
c906108c | 4530 | \f |
c5aa993b | 4531 | |
c3f6f71d JM |
4532 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4533 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4534 | COND[i] and COND_STRING[i] values. | |
4535 | ||
4536 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4537 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4538 | array contents). If the function fails (error() is called), the | |
4539 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4540 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4541 | |
4542 | static void | |
c3f6f71d JM |
4543 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4544 | struct expression **cond, char **cond_string, | |
4545 | enum bptype type, enum bpdisp disposition, | |
4546 | int thread, int ignore_count, int from_tty) | |
c906108c | 4547 | { |
c3f6f71d JM |
4548 | if (type == bp_hardware_breakpoint) |
4549 | { | |
4550 | int i = hw_breakpoint_used_count (); | |
4551 | int target_resources_ok = | |
4552 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4553 | i + sals.nelts, 0); | |
4554 | if (target_resources_ok == 0) | |
4555 | error ("No hardware breakpoint support in the target."); | |
4556 | else if (target_resources_ok < 0) | |
4557 | error ("Hardware breakpoints used exceeds limit."); | |
4558 | } | |
c906108c | 4559 | |
c3f6f71d JM |
4560 | /* Now set all the breakpoints. */ |
4561 | { | |
4562 | int i; | |
4563 | for (i = 0; i < sals.nelts; i++) | |
4564 | { | |
4565 | struct breakpoint *b; | |
4566 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4567 | |
c3f6f71d JM |
4568 | if (from_tty) |
4569 | describe_other_breakpoints (sal.pc, sal.section); | |
4570 | ||
4d28f7a8 | 4571 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4572 | set_breakpoint_count (breakpoint_count + 1); |
4573 | b->number = breakpoint_count; | |
c3f6f71d JM |
4574 | b->cond = cond[i]; |
4575 | b->thread = thread; | |
d8ef46f5 DJ |
4576 | if (addr_string[i]) |
4577 | b->addr_string = addr_string[i]; | |
4578 | else | |
4579 | /* addr_string has to be used or breakpoint_re_set will delete | |
4580 | me. */ | |
4581 | xasprintf (&b->addr_string, "*0x%s", paddr (b->address)); | |
c3f6f71d JM |
4582 | b->cond_string = cond_string[i]; |
4583 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4584 | b->enable_state = bp_enabled; |
c3f6f71d JM |
4585 | b->disposition = disposition; |
4586 | mention (b); | |
4587 | } | |
4588 | } | |
4589 | } | |
c906108c | 4590 | |
c3f6f71d JM |
4591 | /* Parse ARG which is assumed to be a SAL specification possibly |
4592 | followed by conditionals. On return, SALS contains an array of SAL | |
4593 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4594 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4595 | |
c3f6f71d JM |
4596 | void |
4597 | parse_breakpoint_sals (char **address, | |
4598 | struct symtabs_and_lines *sals, | |
4599 | char ***addr_string) | |
4600 | { | |
4601 | char *addr_start = *address; | |
4602 | *addr_string = NULL; | |
4603 | /* If no arg given, or if first arg is 'if ', use the default | |
4604 | breakpoint. */ | |
4605 | if ((*address) == NULL | |
4606 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4607 | { |
4608 | if (default_breakpoint_valid) | |
4609 | { | |
c3f6f71d | 4610 | struct symtab_and_line sal; |
fe39c653 | 4611 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4612 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4613 | xmalloc (sizeof (struct symtab_and_line)); |
4614 | sal.pc = default_breakpoint_address; | |
4615 | sal.line = default_breakpoint_line; | |
4616 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4617 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4618 | sals->sals[0] = sal; |
4619 | sals->nelts = 1; | |
c906108c SS |
4620 | } |
4621 | else | |
4622 | error ("No default breakpoint address now."); | |
4623 | } | |
4624 | else | |
4625 | { | |
c906108c | 4626 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4627 | current_source_symtab (which is decode_line_1's default). This |
4628 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4629 | leaving default_breakpoint_* alone. |
4630 | ObjC: However, don't match an Objective-C method name which | |
4631 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4632 | |
c214a6fd | 4633 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4634 | |
c906108c | 4635 | if (default_breakpoint_valid |
0378c332 | 4636 | && (!cursal.symtab |
1aeae86e AF |
4637 | || ((strchr ("+-", (*address)[0]) != NULL) |
4638 | && ((*address)[1] != '[')))) | |
c3f6f71d JM |
4639 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
4640 | default_breakpoint_line, addr_string); | |
c906108c | 4641 | else |
389e51db | 4642 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4643 | } |
c3f6f71d JM |
4644 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4645 | if (sals->nelts > 0 && *addr_string == NULL) | |
4646 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4647 | if (addr_start != (*address)) | |
c906108c | 4648 | { |
c3f6f71d JM |
4649 | int i; |
4650 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4651 | { |
c3f6f71d JM |
4652 | /* Add the string if not present. */ |
4653 | if ((*addr_string)[i] == NULL) | |
4654 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4655 | } |
4656 | } | |
c3f6f71d | 4657 | } |
c906108c | 4658 | |
c906108c | 4659 | |
c3f6f71d JM |
4660 | /* Convert each SAL into a real PC. Verify that the PC can be |
4661 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4662 | |
c3f6f71d JM |
4663 | void |
4664 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4665 | char *address) | |
4666 | { | |
4667 | int i; | |
4668 | for (i = 0; i < sals->nelts; i++) | |
4669 | { | |
4670 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4671 | |
4672 | /* It's possible for the PC to be nonzero, but still an illegal | |
4673 | value on some targets. | |
4674 | ||
4675 | For example, on HP-UX if you start gdb, and before running the | |
4676 | inferior you try to set a breakpoint on a shared library function | |
4677 | "foo" where the inferior doesn't call "foo" directly but does | |
4678 | pass its address to another function call, then we do find a | |
4679 | minimal symbol for the "foo", but it's address is invalid. | |
4680 | (Appears to be an index into a table that the loader sets up | |
4681 | when the inferior is run.) | |
4682 | ||
4683 | Give the target a chance to bless sals.sals[i].pc before we | |
4684 | try to make a breakpoint for it. */ | |
c3f6f71d | 4685 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4686 | { |
c3f6f71d JM |
4687 | if (address == NULL) |
4688 | error ("Cannot break without a running program."); | |
4689 | else | |
4690 | error ("Cannot break on %s without a running program.", | |
4691 | address); | |
c5aa993b | 4692 | } |
c3f6f71d JM |
4693 | } |
4694 | } | |
4695 | ||
4696 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4697 | flag: first bit : 0 non-temporary, 1 temporary. | |
4698 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4699 | |
c3f6f71d | 4700 | static void |
fba45db2 | 4701 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4702 | { |
4703 | int tempflag, hardwareflag; | |
4704 | struct symtabs_and_lines sals; | |
4705 | register struct expression **cond = 0; | |
4706 | /* Pointers in arg to the start, and one past the end, of the | |
4707 | condition. */ | |
4708 | char **cond_string = (char **) NULL; | |
4709 | char *addr_start = arg; | |
4710 | char **addr_string; | |
4711 | struct cleanup *old_chain; | |
4712 | struct cleanup *breakpoint_chain = NULL; | |
4713 | int i; | |
4714 | int thread = -1; | |
4715 | int ignore_count = 0; | |
4716 | ||
4717 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4718 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4719 | |
c3f6f71d JM |
4720 | sals.sals = NULL; |
4721 | sals.nelts = 0; | |
4722 | addr_string = NULL; | |
4723 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4724 | ||
4725 | if (!sals.nelts) | |
4726 | return; | |
4727 | ||
4728 | /* Create a chain of things that always need to be cleaned up. */ | |
4729 | old_chain = make_cleanup (null_cleanup, 0); | |
4730 | ||
4731 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4732 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4733 | |
4734 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4735 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4736 | |
4737 | /* Allocate space for all the cond expressions. */ | |
4738 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4739 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4740 | |
4741 | /* Allocate space for all the cond strings. */ | |
4742 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4743 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4744 | |
4745 | /* ----------------------------- SNIP ----------------------------- | |
4746 | Anything added to the cleanup chain beyond this point is assumed | |
4747 | to be part of a breakpoint. If the breakpoint create succeeds | |
4748 | then the memory is not reclaimed. */ | |
4749 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4750 | ||
4751 | /* Mark the contents of the addr_string for cleanup. These go on | |
4752 | the breakpoint_chain and only occure if the breakpoint create | |
4753 | fails. */ | |
4754 | for (i = 0; i < sals.nelts; i++) | |
4755 | { | |
4756 | if (addr_string[i] != NULL) | |
b8c9b27d | 4757 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4758 | } |
4759 | ||
4760 | /* Resolve all line numbers to PC's and verify that the addresses | |
4761 | are ok for the target. */ | |
4762 | breakpoint_sals_to_pc (&sals, addr_start); | |
4763 | ||
4764 | /* Verify that condition can be parsed, before setting any | |
4765 | breakpoints. Allocate a separate condition expression for each | |
4766 | breakpoint. */ | |
4767 | thread = -1; /* No specific thread yet */ | |
4768 | for (i = 0; i < sals.nelts; i++) | |
4769 | { | |
4770 | char *tok = arg; | |
c906108c SS |
4771 | while (tok && *tok) |
4772 | { | |
c3f6f71d JM |
4773 | char *end_tok; |
4774 | int toklen; | |
4775 | char *cond_start = NULL; | |
4776 | char *cond_end = NULL; | |
c906108c SS |
4777 | while (*tok == ' ' || *tok == '\t') |
4778 | tok++; | |
4779 | ||
4780 | end_tok = tok; | |
4781 | ||
4782 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4783 | end_tok++; | |
4784 | ||
4785 | toklen = end_tok - tok; | |
4786 | ||
4787 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4788 | { | |
4789 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4790 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4791 | make_cleanup (xfree, cond[i]); |
c906108c | 4792 | cond_end = tok; |
c3f6f71d | 4793 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4794 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4795 | } |
4796 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4797 | { | |
4798 | char *tmptok; | |
4799 | ||
4800 | tok = end_tok + 1; | |
4801 | tmptok = tok; | |
4802 | thread = strtol (tok, &tok, 0); | |
4803 | if (tok == tmptok) | |
4804 | error ("Junk after thread keyword."); | |
4805 | if (!valid_thread_id (thread)) | |
4806 | error ("Unknown thread %d\n", thread); | |
4807 | } | |
4808 | else | |
4809 | error ("Junk at end of arguments."); | |
4810 | } | |
4811 | } | |
c906108c | 4812 | |
c3f6f71d JM |
4813 | create_breakpoints (sals, addr_string, cond, cond_string, |
4814 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4815 | tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4816 | thread, ignore_count, from_tty); |
4817 | ||
4818 | if (sals.nelts > 1) | |
4819 | { | |
4820 | warning ("Multiple breakpoints were set."); | |
4821 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4822 | } |
c3f6f71d JM |
4823 | /* That's it. Discard the cleanups for data inserted into the |
4824 | breakpoint. */ | |
4825 | discard_cleanups (breakpoint_chain); | |
4826 | /* But cleanup everything else. */ | |
4827 | do_cleanups (old_chain); | |
4828 | } | |
c906108c | 4829 | |
c3f6f71d JM |
4830 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4831 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4832 | |
c3f6f71d JM |
4833 | struct captured_breakpoint_args |
4834 | { | |
4835 | char *address; | |
4836 | char *condition; | |
4837 | int hardwareflag; | |
4838 | int tempflag; | |
4839 | int thread; | |
4840 | int ignore_count; | |
4841 | }; | |
4842 | ||
4843 | static int | |
4844 | do_captured_breakpoint (void *data) | |
4845 | { | |
4846 | struct captured_breakpoint_args *args = data; | |
4847 | struct symtabs_and_lines sals; | |
4848 | register struct expression **cond; | |
4849 | struct cleanup *old_chain; | |
4850 | struct cleanup *breakpoint_chain = NULL; | |
4851 | int i; | |
4852 | char **addr_string; | |
4853 | char **cond_string; | |
4854 | ||
4855 | char *address_end; | |
4856 | ||
4857 | /* Parse the source and lines spec. Delay check that the expression | |
4858 | didn't contain trailing garbage until after cleanups are in | |
4859 | place. */ | |
4860 | sals.sals = NULL; | |
4861 | sals.nelts = 0; | |
4862 | address_end = args->address; | |
4863 | addr_string = NULL; | |
4864 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4865 | ||
4866 | if (!sals.nelts) | |
4867 | return GDB_RC_NONE; | |
4868 | ||
4869 | /* Create a chain of things at always need to be cleaned up. */ | |
4870 | old_chain = make_cleanup (null_cleanup, 0); | |
4871 | ||
4872 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4873 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4874 | |
4875 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4876 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4877 | |
4878 | /* Allocate space for all the cond expressions. */ | |
4879 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4880 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4881 | |
4882 | /* Allocate space for all the cond strings. */ | |
4883 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4884 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4885 | |
4886 | /* ----------------------------- SNIP ----------------------------- | |
4887 | Anything added to the cleanup chain beyond this point is assumed | |
4888 | to be part of a breakpoint. If the breakpoint create goes | |
4889 | through then that memory is not cleaned up. */ | |
4890 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4891 | ||
4892 | /* Mark the contents of the addr_string for cleanup. These go on | |
4893 | the breakpoint_chain and only occure if the breakpoint create | |
4894 | fails. */ | |
c906108c SS |
4895 | for (i = 0; i < sals.nelts; i++) |
4896 | { | |
c3f6f71d | 4897 | if (addr_string[i] != NULL) |
b8c9b27d | 4898 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4899 | } |
4900 | ||
c3f6f71d JM |
4901 | /* Wait until now before checking for garbage at the end of the |
4902 | address. That way cleanups can take care of freeing any | |
4903 | memory. */ | |
4904 | if (*address_end != '\0') | |
4905 | error ("Garbage %s following breakpoint address", address_end); | |
4906 | ||
4907 | /* Resolve all line numbers to PC's. */ | |
4908 | breakpoint_sals_to_pc (&sals, args->address); | |
4909 | ||
4910 | /* Verify that conditions can be parsed, before setting any | |
4911 | breakpoints. */ | |
4912 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4913 | { |
c3f6f71d JM |
4914 | if (args->condition != NULL) |
4915 | { | |
4916 | char *tok = args->condition; | |
4917 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4918 | if (*tok != '\0') | |
4919 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4920 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4921 | cond_string[i] = xstrdup (args->condition); |
4922 | } | |
c906108c | 4923 | } |
c3f6f71d JM |
4924 | |
4925 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4926 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 4927 | args->tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
4928 | args->thread, args->ignore_count, 0/*from-tty*/); |
4929 | ||
4930 | /* That's it. Discard the cleanups for data inserted into the | |
4931 | breakpoint. */ | |
4932 | discard_cleanups (breakpoint_chain); | |
4933 | /* But cleanup everything else. */ | |
c906108c | 4934 | do_cleanups (old_chain); |
c3f6f71d | 4935 | return GDB_RC_OK; |
c906108c SS |
4936 | } |
4937 | ||
c3f6f71d JM |
4938 | enum gdb_rc |
4939 | gdb_breakpoint (char *address, char *condition, | |
4940 | int hardwareflag, int tempflag, | |
4941 | int thread, int ignore_count) | |
4942 | { | |
4943 | struct captured_breakpoint_args args; | |
4944 | args.address = address; | |
4945 | args.condition = condition; | |
4946 | args.hardwareflag = hardwareflag; | |
4947 | args.tempflag = tempflag; | |
4948 | args.thread = thread; | |
4949 | args.ignore_count = ignore_count; | |
4950 | return catch_errors (do_captured_breakpoint, &args, | |
4951 | NULL, RETURN_MASK_ALL); | |
4952 | } | |
4953 | ||
4954 | ||
c906108c | 4955 | static void |
fba45db2 | 4956 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4957 | { |
4958 | struct frame_info *frame; | |
4959 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4960 | char *extra_args = NULL; |
4961 | char *level_arg; | |
4962 | char *addr_string; | |
c906108c SS |
4963 | int extra_args_len = 0, if_arg = 0; |
4964 | ||
4965 | if (!arg || | |
4966 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4967 | { | |
4968 | ||
4969 | if (default_breakpoint_valid) | |
4970 | { | |
6e7f8b9c | 4971 | if (deprecated_selected_frame) |
c906108c | 4972 | { |
bdd78e62 | 4973 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
4974 | if (arg) |
4975 | if_arg = 1; | |
4976 | } | |
4977 | else | |
4978 | error ("No selected frame."); | |
4979 | } | |
4980 | else | |
4981 | error ("No default breakpoint address now."); | |
4982 | } | |
4983 | else | |
4984 | { | |
4985 | extra_args = strchr (arg, ' '); | |
4986 | if (extra_args) | |
4987 | { | |
4988 | extra_args++; | |
4989 | extra_args_len = strlen (extra_args); | |
4990 | level_arg = (char *) xmalloc (extra_args - arg); | |
4991 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4992 | level_arg[extra_args - arg - 1] = '\0'; | |
4993 | } | |
4994 | else | |
4995 | { | |
4996 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4997 | strcpy (level_arg, arg); | |
4998 | } | |
4999 | ||
5000 | frame = parse_frame_specification (level_arg); | |
5001 | if (frame) | |
bdd78e62 | 5002 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5003 | else |
5004 | selected_pc = 0; | |
5005 | } | |
5006 | if (if_arg) | |
5007 | { | |
5008 | extra_args = arg; | |
c5aa993b | 5009 | extra_args_len = strlen (arg); |
c906108c SS |
5010 | } |
5011 | ||
5012 | if (selected_pc) | |
5013 | { | |
c5aa993b | 5014 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5015 | { |
5016 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5017 | if (extra_args_len) | |
d4f3574e | 5018 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5019 | else |
d4f3574e | 5020 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c | 5021 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5022 | xfree (addr_string); |
c906108c SS |
5023 | } |
5024 | else | |
5025 | error ("No function contains the specified address"); | |
5026 | } | |
5027 | else | |
5028 | error ("Unable to set breakpoint at procedure exit"); | |
5029 | } | |
5030 | ||
5031 | ||
5032 | static void | |
fba45db2 | 5033 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5034 | { |
5035 | char *addr_string, *break_string, *beg_addr_string; | |
5036 | CORE_ADDR low, high; | |
5037 | struct symtabs_and_lines sals; | |
5038 | struct symtab_and_line sal; | |
5039 | struct cleanup *old_chain; | |
7f7e9482 | 5040 | char *extra_args = NULL; |
c906108c SS |
5041 | int extra_args_len = 0; |
5042 | int i, if_arg = 0; | |
5043 | ||
5044 | if (!arg || | |
5045 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5046 | { | |
5047 | if (default_breakpoint_valid) | |
5048 | { | |
6e7f8b9c | 5049 | if (deprecated_selected_frame) |
c906108c SS |
5050 | { |
5051 | addr_string = (char *) xmalloc (15); | |
bdd78e62 AC |
5052 | sprintf (addr_string, "*0x%s", |
5053 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5054 | if (arg) |
5055 | if_arg = 1; | |
5056 | } | |
5057 | else | |
5058 | error ("No selected frame."); | |
5059 | } | |
5060 | else | |
5061 | error ("No default breakpoint address now."); | |
5062 | } | |
5063 | else | |
5064 | { | |
5065 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5066 | strcpy (addr_string, arg); | |
5067 | } | |
5068 | ||
5069 | if (if_arg) | |
5070 | { | |
5071 | extra_args = arg; | |
c5aa993b JM |
5072 | extra_args_len = strlen (arg); |
5073 | } | |
5074 | else if (arg) | |
5075 | { | |
5076 | /* get the stuff after the function name or address */ | |
5077 | extra_args = strchr (arg, ' '); | |
5078 | if (extra_args) | |
5079 | { | |
5080 | extra_args++; | |
5081 | extra_args_len = strlen (extra_args); | |
5082 | } | |
c906108c | 5083 | } |
c906108c SS |
5084 | |
5085 | sals.sals = NULL; | |
5086 | sals.nelts = 0; | |
5087 | ||
c5aa993b JM |
5088 | beg_addr_string = addr_string; |
5089 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5090 | (char ***) NULL); | |
c906108c | 5091 | |
b8c9b27d KB |
5092 | xfree (beg_addr_string); |
5093 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5094 | for (i = 0; (i < sals.nelts); i++) |
5095 | { | |
5096 | sal = sals.sals[i]; | |
c5aa993b | 5097 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5098 | { |
5099 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5100 | if (extra_args_len) | |
d4f3574e | 5101 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5102 | else |
d4f3574e | 5103 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5104 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5105 | xfree (break_string); |
c906108c SS |
5106 | } |
5107 | else | |
5108 | error ("No function contains the specified address"); | |
5109 | } | |
5110 | if (sals.nelts > 1) | |
5111 | { | |
53a5351d JM |
5112 | warning ("Multiple breakpoints were set.\n"); |
5113 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5114 | } |
c5aa993b | 5115 | do_cleanups (old_chain); |
c906108c SS |
5116 | } |
5117 | ||
5118 | ||
5119 | /* Helper function for break_command_1 and disassemble_command. */ | |
5120 | ||
5121 | void | |
fba45db2 | 5122 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5123 | { |
5124 | CORE_ADDR pc; | |
5125 | ||
5126 | if (sal->pc == 0 && sal->symtab != NULL) | |
5127 | { | |
5128 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5129 | error ("No line %d in file \"%s\".", | |
5130 | sal->line, sal->symtab->filename); | |
5131 | sal->pc = pc; | |
5132 | } | |
5133 | ||
5134 | if (sal->section == 0 && sal->symtab != NULL) | |
5135 | { | |
5136 | struct blockvector *bv; | |
c5aa993b JM |
5137 | struct block *b; |
5138 | struct symbol *sym; | |
5139 | int index; | |
c906108c | 5140 | |
c5aa993b | 5141 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5142 | if (bv != NULL) |
5143 | { | |
c5aa993b | 5144 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5145 | sym = block_function (b); |
5146 | if (sym != NULL) | |
5147 | { | |
5148 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5149 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5150 | } | |
5151 | else | |
5152 | { | |
5153 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5154 | have to look harder. This case can be executed if we have |
5155 | line numbers but no functions (as can happen in assembly | |
5156 | source). */ | |
c906108c | 5157 | |
c5aa993b | 5158 | struct minimal_symbol *msym; |
c906108c SS |
5159 | |
5160 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5161 | if (msym) | |
5162 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5163 | } | |
5164 | } | |
5165 | } | |
5166 | } | |
5167 | ||
5168 | void | |
fba45db2 | 5169 | break_command (char *arg, int from_tty) |
c906108c SS |
5170 | { |
5171 | break_command_1 (arg, 0, from_tty); | |
5172 | } | |
5173 | ||
502fd408 | 5174 | void |
fba45db2 | 5175 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5176 | { |
5177 | break_at_finish_command_1 (arg, 0, from_tty); | |
5178 | } | |
5179 | ||
502fd408 | 5180 | void |
fba45db2 | 5181 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5182 | { |
5183 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5184 | } | |
5185 | ||
5186 | void | |
fba45db2 | 5187 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5188 | { |
5189 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5190 | } | |
5191 | ||
502fd408 | 5192 | void |
fba45db2 | 5193 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5194 | { |
5195 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5196 | } | |
5197 | ||
5198 | static void | |
fba45db2 | 5199 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5200 | { |
5201 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5202 | } | |
5203 | ||
5204 | static void | |
fba45db2 | 5205 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5206 | { |
5207 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5208 | } | |
5209 | ||
5210 | static void | |
fba45db2 | 5211 | stop_command (char *arg, int from_tty) |
c906108c SS |
5212 | { |
5213 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5214 | Usage: stop in <function | address>\n\ | |
5215 | stop at <line>\n"); | |
5216 | } | |
5217 | ||
5218 | static void | |
fba45db2 | 5219 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5220 | { |
5221 | int badInput = 0; | |
5222 | ||
c5aa993b | 5223 | if (arg == (char *) NULL) |
c906108c SS |
5224 | badInput = 1; |
5225 | else if (*arg != '*') | |
5226 | { | |
5227 | char *argptr = arg; | |
5228 | int hasColon = 0; | |
5229 | ||
53a5351d JM |
5230 | /* look for a ':'. If this is a line number specification, then |
5231 | say it is bad, otherwise, it should be an address or | |
5232 | function/method name */ | |
c906108c | 5233 | while (*argptr && !hasColon) |
c5aa993b JM |
5234 | { |
5235 | hasColon = (*argptr == ':'); | |
5236 | argptr++; | |
5237 | } | |
c906108c SS |
5238 | |
5239 | if (hasColon) | |
c5aa993b | 5240 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5241 | else |
c5aa993b | 5242 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5243 | } |
5244 | ||
5245 | if (badInput) | |
c5aa993b | 5246 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5247 | else |
5248 | break_command_1 (arg, 0, from_tty); | |
5249 | } | |
5250 | ||
5251 | static void | |
fba45db2 | 5252 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5253 | { |
5254 | int badInput = 0; | |
5255 | ||
c5aa993b | 5256 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5257 | badInput = 1; |
5258 | else | |
5259 | { | |
5260 | char *argptr = arg; | |
5261 | int hasColon = 0; | |
5262 | ||
5263 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5264 | it is probably a line number. */ |
c906108c | 5265 | while (*argptr && !hasColon) |
c5aa993b JM |
5266 | { |
5267 | hasColon = (*argptr == ':'); | |
5268 | argptr++; | |
5269 | } | |
c906108c SS |
5270 | |
5271 | if (hasColon) | |
c5aa993b | 5272 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5273 | else |
c5aa993b | 5274 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5275 | } |
5276 | ||
5277 | if (badInput) | |
c5aa993b | 5278 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5279 | else |
5280 | break_command_1 (arg, 0, from_tty); | |
5281 | } | |
5282 | ||
5283 | /* ARGSUSED */ | |
53a5351d JM |
5284 | /* accessflag: hw_write: watch write, |
5285 | hw_read: watch read, | |
5286 | hw_access: watch access (read or write) */ | |
c906108c | 5287 | static void |
fba45db2 | 5288 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5289 | { |
5290 | struct breakpoint *b; | |
5291 | struct symtab_and_line sal; | |
5292 | struct expression *exp; | |
5293 | struct block *exp_valid_block; | |
5294 | struct value *val, *mark; | |
5295 | struct frame_info *frame; | |
5296 | struct frame_info *prev_frame = NULL; | |
5297 | char *exp_start = NULL; | |
5298 | char *exp_end = NULL; | |
5299 | char *tok, *end_tok; | |
5300 | int toklen; | |
5301 | char *cond_start = NULL; | |
5302 | char *cond_end = NULL; | |
5303 | struct expression *cond = NULL; | |
5304 | int i, other_type_used, target_resources_ok = 0; | |
5305 | enum bptype bp_type; | |
5306 | int mem_cnt = 0; | |
5307 | ||
fe39c653 | 5308 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5309 | |
c906108c SS |
5310 | /* Parse arguments. */ |
5311 | innermost_block = NULL; | |
5312 | exp_start = arg; | |
5313 | exp = parse_exp_1 (&arg, 0, 0); | |
5314 | exp_end = arg; | |
5315 | exp_valid_block = innermost_block; | |
5316 | mark = value_mark (); | |
5317 | val = evaluate_expression (exp); | |
5318 | release_value (val); | |
5319 | if (VALUE_LAZY (val)) | |
5320 | value_fetch_lazy (val); | |
5321 | ||
5322 | tok = arg; | |
5323 | while (*tok == ' ' || *tok == '\t') | |
5324 | tok++; | |
5325 | end_tok = tok; | |
5326 | ||
5327 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5328 | end_tok++; | |
5329 | ||
5330 | toklen = end_tok - tok; | |
5331 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5332 | { | |
5333 | tok = cond_start = end_tok + 1; | |
5334 | cond = parse_exp_1 (&tok, 0, 0); | |
5335 | cond_end = tok; | |
5336 | } | |
5337 | if (*tok) | |
c5aa993b | 5338 | error ("Junk at end of command."); |
c906108c | 5339 | |
53a5351d | 5340 | if (accessflag == hw_read) |
c5aa993b | 5341 | bp_type = bp_read_watchpoint; |
53a5351d | 5342 | else if (accessflag == hw_access) |
c5aa993b JM |
5343 | bp_type = bp_access_watchpoint; |
5344 | else | |
5345 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5346 | |
5347 | mem_cnt = can_use_hardware_watchpoint (val); | |
5348 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5349 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5350 | if (mem_cnt != 0) |
5351 | { | |
5352 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5353 | target_resources_ok = |
5354 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5355 | other_type_used); | |
c5aa993b | 5356 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5357 | error ("Target does not support this type of hardware watchpoint."); |
5358 | ||
c5aa993b | 5359 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5360 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5361 | } |
c906108c SS |
5362 | |
5363 | #if defined(HPUXHPPA) | |
c5aa993b | 5364 | /* On HP-UX if you set a h/w |
c906108c SS |
5365 | watchpoint before the "run" command, the inferior dies with a e.g., |
5366 | SIGILL once you start it. I initially believed this was due to a | |
5367 | bad interaction between page protection traps and the initial | |
5368 | startup sequence by the dynamic linker. | |
5369 | ||
5370 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5371 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5372 | yet, which forced slow watches before a "run" or "attach", and it |
5373 | still fails somewhere in the startup code. | |
5374 | ||
5375 | Until I figure out what's happening, I'm disallowing watches altogether | |
5376 | before the "run" or "attach" command. We'll tell the user they must | |
5377 | set watches after getting the program started. */ | |
c5aa993b | 5378 | if (!target_has_execution) |
c906108c SS |
5379 | { |
5380 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5381 | return; | |
5382 | } | |
5383 | #endif /* HPUXHPPA */ | |
c5aa993b | 5384 | |
4d28f7a8 KB |
5385 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5386 | watchpoint could not be set. */ | |
5387 | if (!mem_cnt || target_resources_ok <= 0) | |
5388 | bp_type = bp_watchpoint; | |
5389 | ||
c906108c | 5390 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5391 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5392 | set_breakpoint_count (breakpoint_count + 1); |
5393 | b->number = breakpoint_count; | |
b5de0fa7 | 5394 | b->disposition = disp_donttouch; |
c906108c SS |
5395 | b->exp = exp; |
5396 | b->exp_valid_block = exp_valid_block; | |
5397 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5398 | b->val = val; | |
5399 | b->cond = cond; | |
5400 | if (cond_start) | |
5401 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5402 | else | |
5403 | b->cond_string = 0; | |
c5aa993b | 5404 | |
c906108c SS |
5405 | frame = block_innermost_frame (exp_valid_block); |
5406 | if (frame) | |
5407 | { | |
5408 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5409 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5410 | } |
5411 | else | |
101dcfbe AC |
5412 | { |
5413 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5414 | } | |
c906108c | 5415 | |
c906108c SS |
5416 | /* If the expression is "local", then set up a "watchpoint scope" |
5417 | breakpoint at the point where we've left the scope of the watchpoint | |
5418 | expression. */ | |
5419 | if (innermost_block) | |
5420 | { | |
5421 | if (prev_frame) | |
5422 | { | |
5423 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5424 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5425 | bp_watchpoint_scope); | |
c906108c | 5426 | |
b5de0fa7 | 5427 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5428 | |
5429 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5430 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5431 | |
5432 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5433 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5434 | |
5435 | /* Set the address at which we will stop. */ | |
5436 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5437 | ||
5438 | /* The scope breakpoint is related to the watchpoint. We | |
5439 | will need to act on them together. */ | |
5440 | b->related_breakpoint = scope_breakpoint; | |
5441 | } | |
5442 | } | |
5443 | value_free_to_mark (mark); | |
5444 | mention (b); | |
5445 | } | |
5446 | ||
5447 | /* Return count of locations need to be watched and can be handled | |
5448 | in hardware. If the watchpoint can not be handled | |
5449 | in hardware return zero. */ | |
5450 | ||
5451 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5452 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5453 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5454 | #endif | |
5455 | ||
5456 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5457 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5458 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5459 | #endif |
5460 | ||
5461 | static int | |
fba45db2 | 5462 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5463 | { |
5464 | int found_memory_cnt = 0; | |
2e70b7b9 | 5465 | struct value *head = v; |
c906108c SS |
5466 | |
5467 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5468 | if (!can_use_hw_watchpoints) |
c906108c | 5469 | return 0; |
c5aa993b | 5470 | |
5c44784c JM |
5471 | /* Make sure that the value of the expression depends only upon |
5472 | memory contents, and values computed from them within GDB. If we | |
5473 | find any register references or function calls, we can't use a | |
5474 | hardware watchpoint. | |
5475 | ||
5476 | The idea here is that evaluating an expression generates a series | |
5477 | of values, one holding the value of every subexpression. (The | |
5478 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5479 | a*b+c.) GDB's values hold almost enough information to establish | |
5480 | the criteria given above --- they identify memory lvalues, | |
5481 | register lvalues, computed values, etcetera. So we can evaluate | |
5482 | the expression, and then scan the chain of values that leaves | |
5483 | behind to decide whether we can detect any possible change to the | |
5484 | expression's final value using only hardware watchpoints. | |
5485 | ||
5486 | However, I don't think that the values returned by inferior | |
5487 | function calls are special in any way. So this function may not | |
5488 | notice that an expression involving an inferior function call | |
5489 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5490 | for (; v; v = v->next) |
c906108c | 5491 | { |
5c44784c | 5492 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5493 | { |
5c44784c JM |
5494 | if (VALUE_LAZY (v)) |
5495 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5496 | we either just used its address (e.g., `a' in `a.b') or | |
5497 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5498 | ; | |
53a5351d | 5499 | else |
5c44784c JM |
5500 | { |
5501 | /* Ahh, memory we actually used! Check if we can cover | |
5502 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5503 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5504 | ||
5505 | /* We only watch structs and arrays if user asked for it | |
5506 | explicitly, never if they just happen to appear in a | |
5507 | middle of some value chain. */ | |
5508 | if (v == head | |
5509 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5510 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5511 | { | |
5512 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5513 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5514 | ||
5515 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5516 | return 0; | |
5517 | else | |
5518 | found_memory_cnt++; | |
5519 | } | |
5c44784c | 5520 | } |
c5aa993b | 5521 | } |
c906108c | 5522 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5523 | return 0; /* ??? What does this represent? */ |
5524 | else if (v->lval == lval_register) | |
5525 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5526 | } |
5527 | ||
5528 | /* The expression itself looks suitable for using a hardware | |
5529 | watchpoint, but give the target machine a chance to reject it. */ | |
5530 | return found_memory_cnt; | |
5531 | } | |
5532 | ||
8b93c638 | 5533 | void |
fba45db2 | 5534 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5535 | { |
5536 | watch_command (arg, from_tty); | |
5537 | } | |
8926118c | 5538 | |
c5aa993b | 5539 | static void |
fba45db2 | 5540 | watch_command (char *arg, int from_tty) |
c906108c | 5541 | { |
53a5351d | 5542 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5543 | } |
5544 | ||
8b93c638 | 5545 | void |
fba45db2 | 5546 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5547 | { |
5548 | rwatch_command (arg, from_tty); | |
5549 | } | |
8926118c | 5550 | |
c5aa993b | 5551 | static void |
fba45db2 | 5552 | rwatch_command (char *arg, int from_tty) |
c906108c | 5553 | { |
53a5351d | 5554 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5555 | } |
5556 | ||
8b93c638 | 5557 | void |
fba45db2 | 5558 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5559 | { |
5560 | awatch_command (arg, from_tty); | |
5561 | } | |
8926118c | 5562 | |
c5aa993b | 5563 | static void |
fba45db2 | 5564 | awatch_command (char *arg, int from_tty) |
c906108c | 5565 | { |
53a5351d | 5566 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5567 | } |
c906108c | 5568 | \f |
c5aa993b | 5569 | |
43ff13b4 | 5570 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5571 | because it uses the mechanisms of breakpoints. */ |
5572 | ||
43ff13b4 JM |
5573 | /* This function is called by fetch_inferior_event via the |
5574 | cmd_continuation pointer, to complete the until command. It takes | |
5575 | care of cleaning up the temporary breakpoints set up by the until | |
5576 | command. */ | |
c2c6d25f JM |
5577 | static void |
5578 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5579 | { |
0d06e24b JM |
5580 | struct cleanup *cleanups; |
5581 | ||
57e687d9 | 5582 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5583 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5584 | } |
5585 | ||
c906108c SS |
5586 | /* ARGSUSED */ |
5587 | void | |
ae66c1fc | 5588 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5589 | { |
5590 | struct symtabs_and_lines sals; | |
5591 | struct symtab_and_line sal; | |
6e7f8b9c | 5592 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5593 | struct breakpoint *breakpoint; |
5594 | struct cleanup *old_chain; | |
0d06e24b JM |
5595 | struct continuation_arg *arg1; |
5596 | ||
c906108c SS |
5597 | |
5598 | clear_proceed_status (); | |
5599 | ||
5600 | /* Set a breakpoint where the user wants it and at return from | |
5601 | this function */ | |
c5aa993b | 5602 | |
c906108c SS |
5603 | if (default_breakpoint_valid) |
5604 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5605 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5606 | else |
53a5351d JM |
5607 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5608 | 0, (char ***) NULL); | |
c5aa993b | 5609 | |
c906108c SS |
5610 | if (sals.nelts != 1) |
5611 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5612 | |
c906108c | 5613 | sal = sals.sals[0]; |
b8c9b27d | 5614 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5615 | |
c906108c SS |
5616 | if (*arg) |
5617 | error ("Junk at end of arguments."); | |
c5aa993b | 5618 | |
c906108c | 5619 | resolve_sal_pc (&sal); |
c5aa993b | 5620 | |
ae66c1fc EZ |
5621 | if (anywhere) |
5622 | /* If the user told us to continue until a specified location, | |
5623 | we don't specify a frame at which we need to stop. */ | |
5624 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5625 | else | |
5626 | /* Otherwise, specify the current frame, because we want to stop only | |
5627 | at the very same frame. */ | |
5628 | breakpoint = set_momentary_breakpoint (sal, | |
5629 | get_frame_id (deprecated_selected_frame), | |
5630 | bp_until); | |
c5aa993b | 5631 | |
6426a772 | 5632 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5633 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5634 | else |
4d6140d9 | 5635 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5636 | |
5637 | /* If we are running asynchronously, and the target supports async | |
5638 | execution, we are not waiting for the target to stop, in the call | |
5639 | tp proceed, below. This means that we cannot delete the | |
5640 | brekpoints until the target has actually stopped. The only place | |
5641 | where we get a chance to do that is in fetch_inferior_event, so | |
5642 | we must set things up for that. */ | |
5643 | ||
6426a772 | 5644 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5645 | { |
0d06e24b JM |
5646 | /* In this case the arg for the continuation is just the point |
5647 | in the exec_cleanups chain from where to start doing | |
5648 | cleanups, because all the continuation does is the cleanups in | |
5649 | the exec_cleanup_chain. */ | |
5650 | arg1 = | |
5651 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5652 | arg1->next = NULL; |
5653 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5654 | |
5655 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5656 | } |
c906108c | 5657 | |
ae66c1fc EZ |
5658 | /* Keep within the current frame, or in frames called by the current |
5659 | one. */ | |
c906108c SS |
5660 | if (prev_frame) |
5661 | { | |
30f7db39 AC |
5662 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5663 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5664 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5665 | bp_until); | |
6426a772 | 5666 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5667 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5668 | else |
4d6140d9 | 5669 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5670 | } |
c5aa993b | 5671 | |
c906108c | 5672 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5673 | /* Do the cleanups now, anly if we are not running asynchronously, |
5674 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5675 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5676 | do_cleanups (old_chain); |
c906108c | 5677 | } |
ae66c1fc | 5678 | |
c906108c SS |
5679 | #if 0 |
5680 | /* These aren't used; I don't konw what they were for. */ | |
5681 | /* Set a breakpoint at the catch clause for NAME. */ | |
5682 | static int | |
fba45db2 | 5683 | catch_breakpoint (char *name) |
c906108c SS |
5684 | { |
5685 | } | |
5686 | ||
5687 | static int | |
fba45db2 | 5688 | disable_catch_breakpoint (void) |
c906108c SS |
5689 | { |
5690 | } | |
5691 | ||
5692 | static int | |
fba45db2 | 5693 | delete_catch_breakpoint (void) |
c906108c SS |
5694 | { |
5695 | } | |
5696 | ||
5697 | static int | |
fba45db2 | 5698 | enable_catch_breakpoint (void) |
c906108c SS |
5699 | { |
5700 | } | |
5701 | #endif /* 0 */ | |
5702 | ||
5703 | struct sal_chain | |
5704 | { | |
5705 | struct sal_chain *next; | |
5706 | struct symtab_and_line sal; | |
5707 | }; | |
5708 | ||
7a292a7a | 5709 | #if 0 |
c906108c SS |
5710 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5711 | had been commented out in the v.4.16 sources, and stays | |
5712 | disabled there now because "catch NAME" syntax isn't allowed. | |
5713 | pai/1997-07-11 */ | |
5714 | /* This isn't used; I don't know what it was for. */ | |
5715 | /* For each catch clause identified in ARGS, run FUNCTION | |
5716 | with that clause as an argument. */ | |
5717 | static struct symtabs_and_lines | |
831662b3 | 5718 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5719 | { |
5720 | register char *p = args; | |
5721 | register char *p1; | |
5722 | struct symtabs_and_lines sals; | |
5723 | #if 0 | |
5724 | struct sal_chain *sal_chain = 0; | |
5725 | #endif | |
5726 | ||
5727 | if (p == 0) | |
5728 | error_no_arg ("one or more catch names"); | |
5729 | ||
5730 | sals.nelts = 0; | |
5731 | sals.sals = NULL; | |
5732 | ||
5733 | while (*p) | |
5734 | { | |
5735 | p1 = p; | |
5736 | /* Don't swallow conditional part. */ | |
5737 | if (p1[0] == 'i' && p1[1] == 'f' | |
5738 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5739 | break; | |
5740 | ||
5741 | if (isalpha (*p1)) | |
5742 | { | |
5743 | p1++; | |
5744 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5745 | p1++; | |
5746 | } | |
5747 | ||
5748 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5749 | error ("Arguments must be catch names."); | |
5750 | ||
5751 | *p1 = 0; | |
5752 | #if 0 | |
5753 | if (function (p)) | |
5754 | { | |
5755 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5756 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5757 | next->next = sal_chain; |
5758 | next->sal = get_catch_sal (p); | |
5759 | sal_chain = next; | |
5760 | goto win; | |
5761 | } | |
5762 | #endif | |
5763 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5764 | #if 0 | |
5765 | win: | |
5766 | #endif | |
5767 | p = p1; | |
c5aa993b JM |
5768 | while (*p == ' ' || *p == '\t') |
5769 | p++; | |
c906108c SS |
5770 | } |
5771 | } | |
7a292a7a | 5772 | #endif |
c906108c SS |
5773 | |
5774 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5775 | ||
5776 | static struct symtabs_and_lines | |
fba45db2 | 5777 | get_catch_sals (int this_level_only) |
c906108c SS |
5778 | { |
5779 | register struct blockvector *bl; | |
5780 | register struct block *block; | |
5781 | int index, have_default = 0; | |
5782 | CORE_ADDR pc; | |
5783 | struct symtabs_and_lines sals; | |
5784 | struct sal_chain *sal_chain = 0; | |
5785 | char *blocks_searched; | |
5786 | ||
5787 | /* Not sure whether an error message is always the correct response, | |
5788 | but it's better than a core dump. */ | |
6e7f8b9c | 5789 | if (deprecated_selected_frame == NULL) |
c906108c | 5790 | error ("No selected frame."); |
6e7f8b9c | 5791 | block = get_frame_block (deprecated_selected_frame, 0); |
bdd78e62 | 5792 | pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5793 | |
5794 | sals.nelts = 0; | |
5795 | sals.sals = NULL; | |
5796 | ||
5797 | if (block == 0) | |
5798 | error ("No symbol table info available.\n"); | |
5799 | ||
5800 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5801 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5802 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5803 | ||
5804 | while (block != 0) | |
5805 | { | |
5806 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5807 | int last_index; | |
5808 | ||
5809 | if (bl != blockvector_for_pc (end, &index)) | |
5810 | error ("blockvector blotch"); | |
5811 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5812 | error ("blockvector botch"); | |
5813 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5814 | index += 1; | |
5815 | ||
5816 | /* Don't print out blocks that have gone by. */ | |
5817 | while (index < last_index | |
5818 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5819 | index++; | |
5820 | ||
5821 | while (index < last_index | |
5822 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5823 | { | |
5824 | if (blocks_searched[index] == 0) | |
5825 | { | |
5826 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
c906108c SS |
5827 | register int i; |
5828 | register struct symbol *sym; | |
5829 | ||
e88c90f2 | 5830 | ALL_BLOCK_SYMBOLS (b, i, sym) |
c906108c | 5831 | { |
22abf04a | 5832 | if (STREQ (DEPRECATED_SYMBOL_NAME (sym), "default")) |
c906108c SS |
5833 | { |
5834 | if (have_default) | |
5835 | continue; | |
5836 | have_default = 1; | |
5837 | } | |
5838 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5839 | { | |
5840 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5841 | alloca (sizeof (struct sal_chain)); |
c906108c | 5842 | next->next = sal_chain; |
53a5351d JM |
5843 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5844 | 0); | |
c906108c SS |
5845 | sal_chain = next; |
5846 | } | |
5847 | } | |
5848 | blocks_searched[index] = 1; | |
5849 | } | |
5850 | index++; | |
5851 | } | |
5852 | if (have_default) | |
5853 | break; | |
5854 | if (sal_chain && this_level_only) | |
5855 | break; | |
5856 | ||
5857 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5858 | Don't continue to its superblock, the block of |
5859 | per-file symbols. */ | |
c906108c SS |
5860 | if (BLOCK_FUNCTION (block)) |
5861 | break; | |
5862 | block = BLOCK_SUPERBLOCK (block); | |
5863 | } | |
5864 | ||
5865 | if (sal_chain) | |
5866 | { | |
5867 | struct sal_chain *tmp_chain; | |
5868 | ||
5869 | /* Count the number of entries. */ | |
5870 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5871 | tmp_chain = tmp_chain->next) | |
5872 | index++; | |
5873 | ||
5874 | sals.nelts = index; | |
5875 | sals.sals = (struct symtab_and_line *) | |
5876 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5877 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5878 | sals.sals[index] = sal_chain->sal; | |
5879 | } | |
5880 | ||
5881 | return sals; | |
5882 | } | |
5883 | ||
5884 | static void | |
fba45db2 | 5885 | ep_skip_leading_whitespace (char **s) |
c906108c | 5886 | { |
c5aa993b JM |
5887 | if ((s == NULL) || (*s == NULL)) |
5888 | return; | |
5889 | while (isspace (**s)) | |
5890 | *s += 1; | |
c906108c | 5891 | } |
c5aa993b | 5892 | |
c906108c SS |
5893 | /* This function examines a string, and attempts to find a token |
5894 | that might be an event name in the leading characters. If a | |
5895 | possible match is found, a pointer to the last character of | |
5896 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5897 | |
c906108c | 5898 | static char * |
fba45db2 | 5899 | ep_find_event_name_end (char *arg) |
c906108c | 5900 | { |
c5aa993b JM |
5901 | char *s = arg; |
5902 | char *event_name_end = NULL; | |
5903 | ||
c906108c SS |
5904 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5905 | if (arg == NULL) | |
5906 | return NULL; | |
c5aa993b | 5907 | |
c906108c | 5908 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5909 | Basically, we're looking for alphanumerics and underscores; |
5910 | anything else delimites the token. */ | |
c906108c SS |
5911 | while (*s != '\0') |
5912 | { | |
c5aa993b JM |
5913 | if (!isalnum (*s) && (*s != '_')) |
5914 | break; | |
c906108c SS |
5915 | event_name_end = s; |
5916 | s++; | |
5917 | } | |
c5aa993b | 5918 | |
c906108c SS |
5919 | return event_name_end; |
5920 | } | |
5921 | ||
c5aa993b | 5922 | |
c906108c SS |
5923 | /* This function attempts to parse an optional "if <cond>" clause |
5924 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5925 | |
c906108c SS |
5926 | Else, it returns a pointer to the condition string. (It does not |
5927 | attempt to evaluate the string against a particular block.) And, | |
5928 | it updates arg to point to the first character following the parsed | |
5929 | if clause in the arg string. */ | |
53a5351d | 5930 | |
c906108c | 5931 | static char * |
fba45db2 | 5932 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5933 | { |
c5aa993b JM |
5934 | char *cond_string; |
5935 | ||
5936 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5937 | return NULL; |
c5aa993b | 5938 | |
c906108c SS |
5939 | /* Skip the "if" keyword. */ |
5940 | (*arg) += 2; | |
c5aa993b | 5941 | |
c906108c SS |
5942 | /* Skip any extra leading whitespace, and record the start of the |
5943 | condition string. */ | |
5944 | ep_skip_leading_whitespace (arg); | |
5945 | cond_string = *arg; | |
c5aa993b | 5946 | |
c906108c SS |
5947 | /* Assume that the condition occupies the remainder of the arg string. */ |
5948 | (*arg) += strlen (cond_string); | |
c5aa993b | 5949 | |
c906108c SS |
5950 | return cond_string; |
5951 | } | |
c5aa993b | 5952 | |
c906108c SS |
5953 | /* This function attempts to parse an optional filename from the arg |
5954 | string. If one is not found, it returns NULL. | |
c5aa993b | 5955 | |
c906108c SS |
5956 | Else, it returns a pointer to the parsed filename. (This function |
5957 | makes no attempt to verify that a file of that name exists, or is | |
5958 | accessible.) And, it updates arg to point to the first character | |
5959 | following the parsed filename in the arg string. | |
c5aa993b | 5960 | |
c906108c SS |
5961 | Note that clients needing to preserve the returned filename for |
5962 | future access should copy it to their own buffers. */ | |
5963 | static char * | |
fba45db2 | 5964 | ep_parse_optional_filename (char **arg) |
c906108c | 5965 | { |
c5aa993b JM |
5966 | static char filename[1024]; |
5967 | char *arg_p = *arg; | |
5968 | int i; | |
5969 | char c; | |
5970 | ||
c906108c SS |
5971 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5972 | return NULL; | |
c5aa993b JM |
5973 | |
5974 | for (i = 0;; i++) | |
c906108c SS |
5975 | { |
5976 | c = *arg_p; | |
5977 | if (isspace (c)) | |
c5aa993b | 5978 | c = '\0'; |
c906108c SS |
5979 | filename[i] = c; |
5980 | if (c == '\0') | |
c5aa993b | 5981 | break; |
c906108c SS |
5982 | arg_p++; |
5983 | } | |
5984 | *arg = arg_p; | |
c5aa993b | 5985 | |
c906108c SS |
5986 | return filename; |
5987 | } | |
c5aa993b | 5988 | |
c906108c SS |
5989 | /* Commands to deal with catching events, such as signals, exceptions, |
5990 | process start/exit, etc. */ | |
c5aa993b JM |
5991 | |
5992 | typedef enum | |
5993 | { | |
5994 | catch_fork, catch_vfork | |
5995 | } | |
5996 | catch_fork_kind; | |
5997 | ||
e514a9d6 | 5998 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
5999 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
6000 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 6001 | |
c906108c | 6002 | static void |
fba45db2 KB |
6003 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6004 | int from_tty) | |
c906108c | 6005 | { |
c5aa993b JM |
6006 | char *cond_string = NULL; |
6007 | ||
c906108c | 6008 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6009 | |
c906108c | 6010 | /* The allowed syntax is: |
c5aa993b JM |
6011 | catch [v]fork |
6012 | catch [v]fork if <cond> | |
6013 | ||
c906108c SS |
6014 | First, check if there's an if clause. */ |
6015 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6016 | |
c906108c SS |
6017 | if ((*arg != '\0') && !isspace (*arg)) |
6018 | error ("Junk at end of arguments."); | |
c5aa993b | 6019 | |
c906108c SS |
6020 | /* If this target supports it, create a fork or vfork catchpoint |
6021 | and enable reporting of such events. */ | |
c5aa993b JM |
6022 | switch (fork_kind) |
6023 | { | |
6024 | case catch_fork: | |
c906108c SS |
6025 | create_fork_event_catchpoint (tempflag, cond_string); |
6026 | break; | |
c5aa993b | 6027 | case catch_vfork: |
c906108c SS |
6028 | create_vfork_event_catchpoint (tempflag, cond_string); |
6029 | break; | |
c5aa993b | 6030 | default: |
c906108c SS |
6031 | error ("unsupported or unknown fork kind; cannot catch it"); |
6032 | break; | |
c5aa993b | 6033 | } |
c906108c | 6034 | } |
e514a9d6 | 6035 | #endif |
c906108c | 6036 | |
e514a9d6 | 6037 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 6038 | static void |
fba45db2 | 6039 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6040 | { |
c5aa993b | 6041 | char *cond_string = NULL; |
c906108c SS |
6042 | |
6043 | ep_skip_leading_whitespace (&arg); | |
6044 | ||
6045 | /* The allowed syntax is: | |
c5aa993b JM |
6046 | catch exec |
6047 | catch exec if <cond> | |
c906108c SS |
6048 | |
6049 | First, check if there's an if clause. */ | |
6050 | cond_string = ep_parse_optional_if_clause (&arg); | |
6051 | ||
6052 | if ((*arg != '\0') && !isspace (*arg)) | |
6053 | error ("Junk at end of arguments."); | |
6054 | ||
6055 | /* If this target supports it, create an exec catchpoint | |
6056 | and enable reporting of such events. */ | |
6057 | create_exec_event_catchpoint (tempflag, cond_string); | |
6058 | } | |
e514a9d6 | 6059 | #endif |
c5aa993b | 6060 | |
c906108c SS |
6061 | #if defined(SOLIB_ADD) |
6062 | static void | |
fba45db2 | 6063 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6064 | { |
c5aa993b JM |
6065 | char *dll_pathname = NULL; |
6066 | char *cond_string = NULL; | |
6067 | ||
c906108c | 6068 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6069 | |
c906108c | 6070 | /* The allowed syntax is: |
c5aa993b JM |
6071 | catch load |
6072 | catch load if <cond> | |
6073 | catch load <filename> | |
6074 | catch load <filename> if <cond> | |
6075 | ||
c906108c SS |
6076 | The user is not allowed to specify the <filename> after an |
6077 | if clause. | |
c5aa993b | 6078 | |
c906108c | 6079 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6080 | |
c906108c SS |
6081 | First, check if there's an if clause. If so, then there |
6082 | cannot be a filename. */ | |
6083 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6084 | |
c906108c SS |
6085 | /* If there was an if clause, then there cannot be a filename. |
6086 | Else, there might be a filename and an if clause. */ | |
6087 | if (cond_string == NULL) | |
6088 | { | |
6089 | dll_pathname = ep_parse_optional_filename (&arg); | |
6090 | ep_skip_leading_whitespace (&arg); | |
6091 | cond_string = ep_parse_optional_if_clause (&arg); | |
6092 | } | |
c5aa993b | 6093 | |
c906108c SS |
6094 | if ((*arg != '\0') && !isspace (*arg)) |
6095 | error ("Junk at end of arguments."); | |
c5aa993b | 6096 | |
c906108c SS |
6097 | /* Create a load breakpoint that only triggers when a load of |
6098 | the specified dll (or any dll, if no pathname was specified) | |
6099 | occurs. */ | |
39f77062 | 6100 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6101 | dll_pathname, cond_string); |
c906108c | 6102 | } |
c5aa993b | 6103 | |
c906108c | 6104 | static void |
fba45db2 | 6105 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6106 | { |
c5aa993b JM |
6107 | char *dll_pathname = NULL; |
6108 | char *cond_string = NULL; | |
6109 | ||
c906108c | 6110 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6111 | |
c906108c | 6112 | /* The allowed syntax is: |
c5aa993b JM |
6113 | catch unload |
6114 | catch unload if <cond> | |
6115 | catch unload <filename> | |
6116 | catch unload <filename> if <cond> | |
6117 | ||
c906108c SS |
6118 | The user is not allowed to specify the <filename> after an |
6119 | if clause. | |
c5aa993b | 6120 | |
c906108c | 6121 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6122 | |
c906108c SS |
6123 | First, check if there's an if clause. If so, then there |
6124 | cannot be a filename. */ | |
6125 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6126 | |
c906108c SS |
6127 | /* If there was an if clause, then there cannot be a filename. |
6128 | Else, there might be a filename and an if clause. */ | |
6129 | if (cond_string == NULL) | |
6130 | { | |
6131 | dll_pathname = ep_parse_optional_filename (&arg); | |
6132 | ep_skip_leading_whitespace (&arg); | |
6133 | cond_string = ep_parse_optional_if_clause (&arg); | |
6134 | } | |
c5aa993b | 6135 | |
c906108c SS |
6136 | if ((*arg != '\0') && !isspace (*arg)) |
6137 | error ("Junk at end of arguments."); | |
c5aa993b | 6138 | |
c906108c SS |
6139 | /* Create an unload breakpoint that only triggers when an unload of |
6140 | the specified dll (or any dll, if no pathname was specified) | |
6141 | occurs. */ | |
39f77062 | 6142 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6143 | dll_pathname, cond_string); |
c906108c SS |
6144 | } |
6145 | #endif /* SOLIB_ADD */ | |
6146 | ||
6147 | /* Commands to deal with catching exceptions. */ | |
6148 | ||
6149 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6150 | exception event callback */ |
c906108c SS |
6151 | |
6152 | static void | |
fba45db2 KB |
6153 | create_exception_catchpoint (int tempflag, char *cond_string, |
6154 | enum exception_event_kind ex_event, | |
6155 | struct symtab_and_line *sal) | |
c906108c | 6156 | { |
c5aa993b | 6157 | struct breakpoint *b; |
c5aa993b | 6158 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6159 | enum bptype bptype; |
c906108c | 6160 | |
c5aa993b | 6161 | if (!sal) /* no exception support? */ |
c906108c SS |
6162 | return; |
6163 | ||
c906108c SS |
6164 | switch (ex_event) |
6165 | { | |
c5aa993b | 6166 | case EX_EVENT_THROW: |
4d28f7a8 | 6167 | bptype = bp_catch_throw; |
c5aa993b JM |
6168 | break; |
6169 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6170 | bptype = bp_catch_catch; |
c5aa993b JM |
6171 | break; |
6172 | default: /* error condition */ | |
c5aa993b | 6173 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6174 | } |
4d28f7a8 KB |
6175 | |
6176 | b = set_raw_breakpoint (*sal, bptype); | |
6177 | set_breakpoint_count (breakpoint_count + 1); | |
6178 | b->number = breakpoint_count; | |
6179 | b->cond = NULL; | |
6180 | b->cond_string = (cond_string == NULL) ? | |
6181 | NULL : savestring (cond_string, strlen (cond_string)); | |
6182 | b->thread = thread; | |
6183 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6184 | b->enable_state = bp_enabled; |
6185 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6186 | mention (b); |
6187 | } | |
6188 | ||
c5aa993b | 6189 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6190 | |
6191 | static void | |
fba45db2 KB |
6192 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6193 | int tempflag, int from_tty) | |
c906108c | 6194 | { |
c5aa993b JM |
6195 | char *cond_string = NULL; |
6196 | struct symtab_and_line *sal = NULL; | |
6197 | ||
c906108c | 6198 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6199 | |
c906108c SS |
6200 | cond_string = ep_parse_optional_if_clause (&arg); |
6201 | ||
6202 | if ((*arg != '\0') && !isspace (*arg)) | |
6203 | error ("Junk at end of arguments."); | |
6204 | ||
6205 | if ((ex_event != EX_EVENT_THROW) && | |
6206 | (ex_event != EX_EVENT_CATCH)) | |
6207 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6208 | ||
6209 | /* See if we can find a callback routine */ | |
6210 | sal = target_enable_exception_callback (ex_event, 1); | |
6211 | ||
c5aa993b | 6212 | if (sal) |
c906108c SS |
6213 | { |
6214 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6215 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6216 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6217 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6218 | else |
53a5351d | 6219 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6220 | } |
c5aa993b | 6221 | else |
c906108c SS |
6222 | { |
6223 | /* No callbacks from runtime system for exceptions. | |
6224 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6225 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6226 | { |
6227 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6228 | } | |
c906108c | 6229 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6230 | { |
6231 | /* Set a breakpoint on __raise_exception () */ | |
6232 | ||
53a5351d JM |
6233 | warning ("Unsupported with this platform/compiler combination."); |
6234 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6235 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6236 | } |
c906108c SS |
6237 | } |
6238 | } | |
6239 | ||
6240 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6241 | inside a catch_errors */ | |
6242 | ||
6243 | static int | |
4efb68b1 | 6244 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6245 | { |
6246 | args_for_catchpoint_enable *args = arg; | |
6247 | struct symtab_and_line *sal; | |
b5de0fa7 | 6248 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6249 | if (sal == NULL) |
6250 | return 0; | |
6251 | else if (sal == (struct symtab_and_line *) -1) | |
6252 | return -1; | |
6253 | else | |
c5aa993b | 6254 | return 1; /*is valid */ |
c906108c SS |
6255 | } |
6256 | ||
6257 | ||
6258 | ||
6259 | /* This is the original v.4.16 and earlier version of the | |
6260 | catch_command_1() function. Now that other flavours of "catch" | |
6261 | have been introduced, and since exception handling can be handled | |
6262 | in other ways (through target ops) also, this is used only for the | |
6263 | GNU C++ exception handling system. | |
6264 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6265 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6266 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6267 | |
c906108c SS |
6268 | Called from catch_exception_command_1 () */ |
6269 | ||
6270 | ||
6271 | static void | |
fba45db2 | 6272 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6273 | { |
6274 | /* First, translate ARG into something we can deal with in terms | |
6275 | of breakpoints. */ | |
6276 | ||
6277 | struct symtabs_and_lines sals; | |
6278 | struct symtab_and_line sal; | |
6279 | register struct expression *cond = 0; | |
6280 | register struct breakpoint *b; | |
6281 | char *save_arg; | |
6282 | int i; | |
6283 | ||
fe39c653 | 6284 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6285 | |
6286 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6287 | are breakpointed. */ | |
6288 | ||
c5aa993b | 6289 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6290 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6291 | { | |
6292 | /* Grab all active catch clauses. */ | |
6293 | sals = get_catch_sals (0); | |
6294 | } | |
6295 | else | |
6296 | { | |
6297 | /* Grab selected catch clauses. */ | |
6298 | error ("catch NAME not implemented"); | |
6299 | ||
6300 | #if 0 | |
6301 | /* Not sure why this code has been disabled. I'm leaving | |
6302 | it disabled. We can never come here now anyway | |
6303 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6304 | pai/1997-07-11 */ |
c906108c SS |
6305 | |
6306 | /* This isn't used; I don't know what it was for. */ | |
6307 | sals = map_catch_names (arg, catch_breakpoint); | |
6308 | #endif | |
6309 | } | |
6310 | ||
c5aa993b | 6311 | if (!sals.nelts) |
c906108c SS |
6312 | return; |
6313 | ||
6314 | save_arg = arg; | |
6315 | for (i = 0; i < sals.nelts; i++) | |
6316 | { | |
6317 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6318 | |
c906108c SS |
6319 | while (arg && *arg) |
6320 | { | |
6321 | if (arg[0] == 'i' && arg[1] == 'f' | |
6322 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6323 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6324 | block_for_pc (sals.sals[i].pc), 0); |
6325 | else | |
6326 | error ("Junk at end of arguments."); | |
6327 | } | |
6328 | arg = save_arg; | |
6329 | } | |
6330 | ||
6331 | for (i = 0; i < sals.nelts; i++) | |
6332 | { | |
6333 | sal = sals.sals[i]; | |
6334 | ||
6335 | if (from_tty) | |
6336 | describe_other_breakpoints (sal.pc, sal.section); | |
6337 | ||
53a5351d JM |
6338 | /* Important -- this is an ordinary breakpoint. For platforms |
6339 | with callback support for exceptions, | |
6340 | create_exception_catchpoint() will create special bp types | |
6341 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6342 | insert_breakpoints() and elsewhere that depends on that. */ | |
4d28f7a8 KB |
6343 | b = set_raw_breakpoint (sal, bp_breakpoint); |
6344 | set_breakpoint_count (breakpoint_count + 1); | |
6345 | b->number = breakpoint_count; | |
c906108c SS |
6346 | |
6347 | b->cond = cond; | |
b5de0fa7 EZ |
6348 | b->enable_state = bp_enabled; |
6349 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6350 | |
6351 | mention (b); | |
6352 | } | |
6353 | ||
6354 | if (sals.nelts > 1) | |
6355 | { | |
53a5351d JM |
6356 | warning ("Multiple breakpoints were set."); |
6357 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6358 | } |
b8c9b27d | 6359 | xfree (sals.sals); |
c906108c SS |
6360 | } |
6361 | ||
c906108c | 6362 | static void |
fba45db2 | 6363 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6364 | { |
c5aa993b | 6365 | |
c906108c SS |
6366 | /* The first argument may be an event name, such as "start" or "load". |
6367 | If so, then handle it as such. If it doesn't match an event name, | |
6368 | then attempt to interpret it as an exception name. (This latter is | |
6369 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6370 | |
c906108c | 6371 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6372 | char *arg1_start = arg; |
6373 | char *arg1_end; | |
6374 | int arg1_length; | |
6375 | ||
c906108c SS |
6376 | if (arg1_start == NULL) |
6377 | { | |
c5aa993b | 6378 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6379 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6380 | /* return; */ | |
c5aa993b | 6381 | /* Now, this is not allowed */ |
c906108c SS |
6382 | error ("Catch requires an event name."); |
6383 | ||
6384 | } | |
6385 | arg1_end = ep_find_event_name_end (arg1_start); | |
6386 | if (arg1_end == NULL) | |
6387 | error ("catch requires an event"); | |
6388 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6389 | |
c906108c SS |
6390 | /* Try to match what we found against known event names. */ |
6391 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6392 | { | |
6393 | error ("Catch of signal not yet implemented"); | |
6394 | } | |
6395 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6396 | { | |
53a5351d JM |
6397 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6398 | tempflag, from_tty); | |
c906108c SS |
6399 | } |
6400 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6401 | { | |
53a5351d JM |
6402 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6403 | tempflag, from_tty); | |
c906108c SS |
6404 | } |
6405 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6406 | { | |
6407 | error ("Catch of thread_start not yet implemented"); | |
6408 | } | |
6409 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6410 | { | |
6411 | error ("Catch of thread_exit not yet implemented"); | |
6412 | } | |
6413 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6414 | { | |
6415 | error ("Catch of thread_join not yet implemented"); | |
6416 | } | |
6417 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6418 | { | |
6419 | error ("Catch of start not yet implemented"); | |
6420 | } | |
6421 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6422 | { | |
6423 | error ("Catch of exit not yet implemented"); | |
6424 | } | |
6425 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6426 | { | |
6427 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6428 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6429 | #else |
6430 | error ("Catch of fork not yet implemented"); | |
6431 | #endif | |
6432 | } | |
6433 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6434 | { | |
6435 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6436 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6437 | #else |
6438 | error ("Catch of vfork not yet implemented"); | |
6439 | #endif | |
6440 | } | |
6441 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6442 | { | |
6443 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6444 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6445 | #else |
6446 | error ("Catch of exec not yet implemented"); | |
6447 | #endif | |
6448 | } | |
6449 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6450 | { | |
6451 | #if defined(SOLIB_ADD) | |
c5aa993b | 6452 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6453 | #else |
6454 | error ("Catch of load not implemented"); | |
6455 | #endif | |
6456 | } | |
6457 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6458 | { | |
6459 | #if defined(SOLIB_ADD) | |
c5aa993b | 6460 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6461 | #else |
6462 | error ("Catch of load not implemented"); | |
6463 | #endif | |
6464 | } | |
6465 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6466 | { | |
6467 | error ("Catch of stop not yet implemented"); | |
6468 | } | |
c5aa993b | 6469 | |
c906108c SS |
6470 | /* This doesn't appear to be an event name */ |
6471 | ||
6472 | else | |
6473 | { | |
6474 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6475 | as the name of an exception */ |
c906108c | 6476 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6477 | /* Now this is not allowed */ |
c906108c SS |
6478 | error ("Unknown event kind specified for catch"); |
6479 | ||
6480 | } | |
6481 | } | |
6482 | ||
6483 | /* Used by the gui, could be made a worker for other things. */ | |
6484 | ||
6485 | struct breakpoint * | |
fba45db2 | 6486 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6487 | { |
6488 | struct breakpoint *b; | |
4d28f7a8 | 6489 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6490 | set_breakpoint_count (breakpoint_count + 1); |
6491 | b->number = breakpoint_count; | |
c906108c SS |
6492 | b->cond = 0; |
6493 | b->thread = -1; | |
6494 | return b; | |
6495 | } | |
6496 | ||
6497 | #if 0 | |
6498 | /* These aren't used; I don't know what they were for. */ | |
6499 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6500 | static void | |
fba45db2 | 6501 | disable_catch (char *args) |
c906108c SS |
6502 | { |
6503 | /* Map the disable command to catch clauses described in ARGS. */ | |
6504 | } | |
6505 | ||
6506 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6507 | static void | |
fba45db2 | 6508 | enable_catch (char *args) |
c906108c SS |
6509 | { |
6510 | /* Map the disable command to catch clauses described in ARGS. */ | |
6511 | } | |
6512 | ||
6513 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6514 | static void | |
fba45db2 | 6515 | delete_catch (char *args) |
c906108c SS |
6516 | { |
6517 | /* Map the delete command to catch clauses described in ARGS. */ | |
6518 | } | |
6519 | #endif /* 0 */ | |
6520 | ||
6521 | static void | |
fba45db2 | 6522 | catch_command (char *arg, int from_tty) |
c906108c SS |
6523 | { |
6524 | catch_command_1 (arg, 0, from_tty); | |
6525 | } | |
6526 | \f | |
6527 | ||
6528 | static void | |
fba45db2 | 6529 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6530 | { |
6531 | catch_command_1 (arg, 1, from_tty); | |
6532 | } | |
6533 | ||
80f8a6eb | 6534 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6535 | |
6536 | static void | |
fba45db2 | 6537 | clear_command (char *arg, int from_tty) |
c906108c | 6538 | { |
80f8a6eb | 6539 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6540 | int default_match; |
6541 | struct symtabs_and_lines sals; | |
6542 | struct symtab_and_line sal; | |
c906108c SS |
6543 | int i; |
6544 | ||
6545 | if (arg) | |
6546 | { | |
6547 | sals = decode_line_spec (arg, 1); | |
6548 | default_match = 0; | |
6549 | } | |
6550 | else | |
6551 | { | |
c5aa993b | 6552 | sals.sals = (struct symtab_and_line *) |
c906108c | 6553 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6554 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6555 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6556 | sal.line = default_breakpoint_line; |
6557 | sal.symtab = default_breakpoint_symtab; | |
6558 | sal.pc = default_breakpoint_address; | |
6559 | if (sal.symtab == 0) | |
6560 | error ("No source file specified."); | |
6561 | ||
6562 | sals.sals[0] = sal; | |
6563 | sals.nelts = 1; | |
6564 | ||
6565 | default_match = 1; | |
6566 | } | |
6567 | ||
6568 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6569 | to it. Do it in two passes, solely to preserve the current |
6570 | behavior that from_tty is forced true if we delete more than | |
6571 | one breakpoint. */ | |
c906108c | 6572 | |
80f8a6eb | 6573 | found = NULL; |
c906108c SS |
6574 | for (i = 0; i < sals.nelts; i++) |
6575 | { | |
6576 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6577 | If line given (pc == 0), clear all bpts on specified line. |
6578 | If defaulting, clear all bpts on default line | |
c906108c | 6579 | or at default pc. |
c5aa993b JM |
6580 | |
6581 | defaulting sal.pc != 0 tests to do | |
6582 | ||
6583 | 0 1 pc | |
6584 | 1 1 pc _and_ line | |
6585 | 0 0 line | |
6586 | 1 0 <can't happen> */ | |
c906108c SS |
6587 | |
6588 | sal = sals.sals[i]; | |
80f8a6eb | 6589 | prev = NULL; |
c906108c | 6590 | |
80f8a6eb MS |
6591 | /* Find all matching breakpoints, remove them from the |
6592 | breakpoint chain, and add them to the 'found' chain. */ | |
6593 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6594 | { |
80f8a6eb MS |
6595 | /* Are we going to delete b? */ |
6596 | if (b->type != bp_none | |
6597 | && b->type != bp_watchpoint | |
6598 | && b->type != bp_hardware_watchpoint | |
6599 | && b->type != bp_read_watchpoint | |
6600 | && b->type != bp_access_watchpoint | |
6601 | /* Not if b is a watchpoint of any sort... */ | |
6602 | && (((sal.pc && (b->address == sal.pc)) | |
6603 | && (!section_is_overlay (b->section) | |
6604 | || b->section == sal.section)) | |
6605 | /* Yes, if sal.pc matches b (modulo overlays). */ | |
6606 | || ((default_match || (0 == sal.pc)) | |
6607 | && b->source_file != NULL | |
6608 | && sal.symtab != NULL | |
6609 | && STREQ (b->source_file, sal.symtab->filename) | |
6610 | && b->line_number == sal.line))) | |
6611 | /* Yes, if sal source file and line matches b. */ | |
6612 | { | |
6613 | /* Remove it from breakpoint_chain... */ | |
6614 | if (b == breakpoint_chain) | |
6615 | { | |
6616 | /* b is at the head of the list */ | |
6617 | breakpoint_chain = b->next; | |
6618 | } | |
6619 | else | |
6620 | { | |
6621 | prev->next = b->next; | |
6622 | } | |
6623 | /* And add it to 'found' chain. */ | |
6624 | b->next = found; | |
6625 | found = b; | |
6626 | } | |
c906108c | 6627 | else |
80f8a6eb MS |
6628 | { |
6629 | /* Keep b, and keep a pointer to it. */ | |
6630 | prev = b; | |
6631 | } | |
c906108c | 6632 | } |
80f8a6eb MS |
6633 | } |
6634 | /* Now go thru the 'found' chain and delete them. */ | |
6635 | if (found == 0) | |
6636 | { | |
6637 | if (arg) | |
6638 | error ("No breakpoint at %s.", arg); | |
6639 | else | |
6640 | error ("No breakpoint at this line."); | |
6641 | } | |
c906108c | 6642 | |
80f8a6eb MS |
6643 | if (found->next) |
6644 | from_tty = 1; /* Always report if deleted more than one */ | |
6645 | if (from_tty) | |
6646 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6647 | breakpoints_changed (); | |
6648 | while (found) | |
6649 | { | |
c5aa993b | 6650 | if (from_tty) |
80f8a6eb MS |
6651 | printf_unfiltered ("%d ", found->number); |
6652 | tmp = found->next; | |
6653 | delete_breakpoint (found); | |
6654 | found = tmp; | |
c906108c | 6655 | } |
80f8a6eb MS |
6656 | if (from_tty) |
6657 | putchar_unfiltered ('\n'); | |
c906108c SS |
6658 | } |
6659 | \f | |
6660 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6661 | all breakpoints that are marked for deletion, whether hit or not. | |
6662 | This is called after any breakpoint is hit, or after errors. */ | |
6663 | ||
6664 | void | |
fba45db2 | 6665 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6666 | { |
6667 | struct breakpoint *b, *temp; | |
6668 | ||
6669 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6670 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6671 | && bs->stop) |
6672 | delete_breakpoint (bs->breakpoint_at); | |
6673 | ||
6674 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6675 | { |
b5de0fa7 | 6676 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6677 | delete_breakpoint (b); |
6678 | } | |
c906108c SS |
6679 | } |
6680 | ||
53a5351d JM |
6681 | /* Delete a breakpoint and clean up all traces of it in the data |
6682 | structures. */ | |
c906108c SS |
6683 | |
6684 | void | |
fba45db2 | 6685 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6686 | { |
6687 | register struct breakpoint *b; | |
6688 | register bpstat bs; | |
6689 | ||
6690 | if (bpt == NULL) | |
6691 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6692 | ||
6693 | ||
6694 | /* Has this bp already been deleted? This can happen because multiple | |
6695 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6696 | ||
6697 | One example of this happening is a watchpoint's scope bp. When the | |
6698 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6699 | delete it. We also delete its scope bp. But the scope bp is marked | |
6700 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6701 | checked for auto-deleting bp's, which are deleted. | |
6702 | ||
6703 | A real solution to this problem might involve reference counts in bp's, | |
6704 | and/or giving them pointers back to their referencing bpstat's, and | |
6705 | teaching delete_breakpoint to only free a bp's storage when no more | |
6706 | references were extent. A cheaper bandaid was chosen. */ | |
6707 | if (bpt->type == bp_none) | |
6708 | return; | |
6709 | ||
6710 | if (delete_breakpoint_hook) | |
6711 | delete_breakpoint_hook (bpt); | |
104c1213 | 6712 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6713 | |
6714 | if (bpt->inserted) | |
2e663524 | 6715 | remove_breakpoint (bpt, mark_inserted); |
c5aa993b | 6716 | |
c906108c SS |
6717 | if (breakpoint_chain == bpt) |
6718 | breakpoint_chain = bpt->next; | |
6719 | ||
6720 | /* If we have callback-style exception catchpoints, don't go through | |
6721 | the adjustments to the C++ runtime library etc. if the inferior | |
6722 | isn't actually running. target_enable_exception_callback for a | |
6723 | null target ops vector gives an undesirable error message, so we | |
6724 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6725 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6726 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6727 | { | |
6728 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6729 | static char message[sizeof (message1) + 30]; | |
6730 | args_for_catchpoint_enable args; | |
6731 | ||
53a5351d JM |
6732 | /* Format possible error msg */ |
6733 | sprintf (message, message1, bpt->number); | |
6734 | args.kind = bpt->type == bp_catch_catch ? | |
6735 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6736 | args.enable_p = 0; |
c906108c SS |
6737 | catch_errors (cover_target_enable_exception_callback, &args, |
6738 | message, RETURN_MASK_ALL); | |
6739 | } | |
6740 | ||
6741 | ||
6742 | ALL_BREAKPOINTS (b) | |
6743 | if (b->next == bpt) | |
c5aa993b JM |
6744 | { |
6745 | b->next = bpt->next; | |
6746 | break; | |
6747 | } | |
c906108c | 6748 | |
9f60f21b | 6749 | check_duplicates (bpt); |
c906108c SS |
6750 | /* If this breakpoint was inserted, and there is another breakpoint |
6751 | at the same address, we need to insert the other breakpoint. */ | |
6752 | if (bpt->inserted | |
6753 | && bpt->type != bp_hardware_watchpoint | |
6754 | && bpt->type != bp_read_watchpoint | |
6755 | && bpt->type != bp_access_watchpoint | |
6756 | && bpt->type != bp_catch_fork | |
6757 | && bpt->type != bp_catch_vfork | |
6758 | && bpt->type != bp_catch_exec) | |
6759 | { | |
6760 | ALL_BREAKPOINTS (b) | |
6761 | if (b->address == bpt->address | |
6762 | && b->section == bpt->section | |
6763 | && !b->duplicate | |
b5de0fa7 EZ |
6764 | && b->enable_state != bp_disabled |
6765 | && b->enable_state != bp_shlib_disabled | |
6766 | && b->enable_state != bp_call_disabled) | |
c5aa993b JM |
6767 | { |
6768 | int val; | |
53a5351d | 6769 | |
c2c6d25f JM |
6770 | /* We should never reach this point if there is a permanent |
6771 | breakpoint at the same address as the one being deleted. | |
6772 | If there is a permanent breakpoint somewhere, it should | |
6773 | always be the only one inserted. */ | |
b5de0fa7 | 6774 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6775 | internal_error (__FILE__, __LINE__, |
6776 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6777 | "a permanent breakpoint"); |
6778 | ||
53a5351d JM |
6779 | if (b->type == bp_hardware_breakpoint) |
6780 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6781 | else | |
6782 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6783 | ||
81d0cc19 | 6784 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6785 | if (val != 0) |
6786 | { | |
81d0cc19 GS |
6787 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6788 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6789 | ||
6790 | ||
6791 | if (b->type == bp_hardware_breakpoint) | |
6792 | { | |
6793 | fprintf_unfiltered (tmp_error_stream, | |
6794 | "Cannot insert hardware breakpoint %d.\n" | |
6795 | "You may have requested too many hardware breakpoints.\n", | |
6796 | b->number); | |
6797 | } | |
6798 | else | |
6799 | { | |
6800 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6801 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
6802 | print_address_numeric (b->address, 1, tmp_error_stream); | |
6803 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
6804 | safe_strerror (val)); | |
6805 | } | |
6806 | ||
6807 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6808 | target_terminal_ours_for_output (); |
81d0cc19 | 6809 | error_stream(tmp_error_stream); |
c5aa993b JM |
6810 | } |
6811 | else | |
6812 | b->inserted = 1; | |
6813 | } | |
c906108c SS |
6814 | } |
6815 | ||
6816 | free_command_lines (&bpt->commands); | |
6817 | if (bpt->cond) | |
b8c9b27d | 6818 | xfree (bpt->cond); |
c906108c | 6819 | if (bpt->cond_string != NULL) |
b8c9b27d | 6820 | xfree (bpt->cond_string); |
c906108c | 6821 | if (bpt->addr_string != NULL) |
b8c9b27d | 6822 | xfree (bpt->addr_string); |
c906108c | 6823 | if (bpt->exp != NULL) |
b8c9b27d | 6824 | xfree (bpt->exp); |
c906108c | 6825 | if (bpt->exp_string != NULL) |
b8c9b27d | 6826 | xfree (bpt->exp_string); |
c906108c SS |
6827 | if (bpt->val != NULL) |
6828 | value_free (bpt->val); | |
6829 | if (bpt->source_file != NULL) | |
b8c9b27d | 6830 | xfree (bpt->source_file); |
c906108c | 6831 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6832 | xfree (bpt->dll_pathname); |
c906108c | 6833 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6834 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6835 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6836 | xfree (bpt->exec_pathname); |
c906108c SS |
6837 | |
6838 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6839 | /* FIXME, how can we find all bpstat's? | |
6840 | We just check stop_bpstat for now. */ | |
6841 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6842 | if (bs->breakpoint_at == bpt) | |
6843 | { | |
6844 | bs->breakpoint_at = NULL; | |
c906108c | 6845 | bs->old_val = NULL; |
c2b8ed2c | 6846 | /* bs->commands will be freed later. */ |
c906108c SS |
6847 | } |
6848 | /* On the chance that someone will soon try again to delete this same | |
6849 | bp, we mark it as deleted before freeing its storage. */ | |
6850 | bpt->type = bp_none; | |
6851 | ||
b8c9b27d | 6852 | xfree (bpt); |
c906108c SS |
6853 | } |
6854 | ||
4d6140d9 AC |
6855 | static void |
6856 | do_delete_breakpoint_cleanup (void *b) | |
6857 | { | |
6858 | delete_breakpoint (b); | |
6859 | } | |
6860 | ||
6861 | struct cleanup * | |
6862 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6863 | { | |
6864 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6865 | } | |
6866 | ||
6867 | struct cleanup * | |
6868 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6869 | { | |
6870 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6871 | } | |
6872 | ||
c906108c | 6873 | void |
fba45db2 | 6874 | delete_command (char *arg, int from_tty) |
c906108c SS |
6875 | { |
6876 | struct breakpoint *b, *temp; | |
6877 | ||
ea9365bb TT |
6878 | dont_repeat (); |
6879 | ||
c906108c SS |
6880 | if (arg == 0) |
6881 | { | |
6882 | int breaks_to_delete = 0; | |
6883 | ||
6884 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6885 | Do not delete internal or call-dummy breakpoints, these |
6886 | have to be deleted with an explicit breakpoint number argument. */ | |
6887 | ALL_BREAKPOINTS (b) | |
6888 | { | |
6889 | if (b->type != bp_call_dummy && | |
6890 | b->type != bp_shlib_event && | |
c4093a6a | 6891 | b->type != bp_thread_event && |
1900040c | 6892 | b->type != bp_overlay_event && |
c5aa993b JM |
6893 | b->number >= 0) |
6894 | breaks_to_delete = 1; | |
6895 | } | |
c906108c SS |
6896 | |
6897 | /* Ask user only if there are some breakpoints to delete. */ | |
6898 | if (!from_tty | |
6899 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6900 | { | |
c5aa993b JM |
6901 | ALL_BREAKPOINTS_SAFE (b, temp) |
6902 | { | |
6903 | if (b->type != bp_call_dummy && | |
6904 | b->type != bp_shlib_event && | |
c4093a6a | 6905 | b->type != bp_thread_event && |
1900040c | 6906 | b->type != bp_overlay_event && |
c5aa993b JM |
6907 | b->number >= 0) |
6908 | delete_breakpoint (b); | |
6909 | } | |
c906108c SS |
6910 | } |
6911 | } | |
6912 | else | |
6913 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6914 | } | |
6915 | ||
6916 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6917 | The value we return ends up being the return value from catch_errors. | |
6918 | Unused in this case. */ | |
6919 | ||
6920 | static int | |
4efb68b1 | 6921 | breakpoint_re_set_one (void *bint) |
c906108c | 6922 | { |
53a5351d JM |
6923 | /* get past catch_errs */ |
6924 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6925 | struct value *mark; |
6926 | int i; | |
6927 | struct symtabs_and_lines sals; | |
6928 | char *s; | |
b5de0fa7 | 6929 | enum enable_state save_enable; |
c906108c SS |
6930 | |
6931 | switch (b->type) | |
6932 | { | |
6933 | case bp_none: | |
53a5351d JM |
6934 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6935 | b->number); | |
c906108c SS |
6936 | return 0; |
6937 | case bp_breakpoint: | |
6938 | case bp_hardware_breakpoint: | |
6939 | case bp_catch_load: | |
6940 | case bp_catch_unload: | |
6941 | if (b->addr_string == NULL) | |
6942 | { | |
6943 | /* Anything without a string can't be re-set. */ | |
6944 | delete_breakpoint (b); | |
6945 | return 0; | |
6946 | } | |
b18c45ed AC |
6947 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6948 | ||
6949 | ``And a hack it is, although Apple's Darwin version of GDB | |
6950 | contains an almost identical hack to implement a "future | |
6951 | break" command. It seems to work in many real world cases, | |
6952 | but it is easy to come up with a test case where the patch | |
6953 | doesn't help at all.'' | |
6954 | ||
6955 | ``It seems that the way GDB implements breakpoints - in - | |
6956 | shared - libraries was designed for a.out shared library | |
6957 | systems (SunOS 4) where shared libraries were loaded at a | |
6958 | fixed address in memory. Since ELF shared libraries can (and | |
6959 | will) be loaded at any address in memory, things break. | |
6960 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6961 | we should add this hack to the branch only. I cannot | |
6962 | guarantee that things will be fixed on the trunk in the near | |
6963 | future.'' | |
6964 | ||
6965 | In case we have a problem, disable this breakpoint. We'll | |
6966 | restore its status if we succeed. Don't disable a | |
6967 | shlib_disabled breakpoint though. There's a fair chance we | |
6968 | can't re-set it if the shared library it's in hasn't been | |
6969 | loaded yet. */ | |
b5de0fa7 | 6970 | save_enable = b->enable_state; |
b18c45ed AC |
6971 | if (b->enable_state != bp_shlib_disabled) |
6972 | b->enable_state = bp_disabled; | |
c906108c SS |
6973 | |
6974 | set_language (b->language); | |
6975 | input_radix = b->input_radix; | |
6976 | s = b->addr_string; | |
c5aa993b | 6977 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6978 | for (i = 0; i < sals.nelts; i++) |
6979 | { | |
6980 | resolve_sal_pc (&sals.sals[i]); | |
6981 | ||
6982 | /* Reparse conditions, they might contain references to the | |
6983 | old symtab. */ | |
6984 | if (b->cond_string != NULL) | |
6985 | { | |
6986 | s = b->cond_string; | |
6987 | if (b->cond) | |
b8c9b27d | 6988 | xfree (b->cond); |
c906108c SS |
6989 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6990 | } | |
6991 | ||
c5aa993b | 6992 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6993 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6994 | /* ...or new and old breakpoints both have source files, and |
6995 | the source file name or the line number changes... */ | |
c906108c SS |
6996 | || (b->source_file != NULL |
6997 | && sals.sals[i].symtab != NULL | |
6998 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6999 | || b->line_number != sals.sals[i].line) | |
c906108c | 7000 | ) |
c5aa993b JM |
7001 | /* ...or we switch between having a source file and not having |
7002 | one. */ | |
7003 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7004 | ) | |
c906108c SS |
7005 | { |
7006 | if (b->source_file != NULL) | |
b8c9b27d | 7007 | xfree (b->source_file); |
c906108c SS |
7008 | if (sals.sals[i].symtab == NULL) |
7009 | b->source_file = NULL; | |
7010 | else | |
7011 | b->source_file = | |
7012 | savestring (sals.sals[i].symtab->filename, | |
7013 | strlen (sals.sals[i].symtab->filename)); | |
7014 | b->line_number = sals.sals[i].line; | |
7015 | b->address = sals.sals[i].pc; | |
7016 | ||
c5aa993b | 7017 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7018 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7019 | breakpoints. */ |
c906108c SS |
7020 | |
7021 | mention (b); | |
7022 | ||
7023 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7024 | rather than once for every breakpoint. */ |
c906108c SS |
7025 | breakpoints_changed (); |
7026 | } | |
7027 | b->section = sals.sals[i].section; | |
b5de0fa7 | 7028 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7029 | |
7030 | ||
c5aa993b | 7031 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7032 | can be used. */ |
9f60f21b | 7033 | check_duplicates (b); |
c906108c SS |
7034 | |
7035 | } | |
b8c9b27d | 7036 | xfree (sals.sals); |
c906108c SS |
7037 | break; |
7038 | ||
7039 | case bp_watchpoint: | |
7040 | case bp_hardware_watchpoint: | |
7041 | case bp_read_watchpoint: | |
7042 | case bp_access_watchpoint: | |
7043 | innermost_block = NULL; | |
53a5351d JM |
7044 | /* The issue arises of what context to evaluate this in. The |
7045 | same one as when it was set, but what does that mean when | |
7046 | symbols have been re-read? We could save the filename and | |
7047 | functionname, but if the context is more local than that, the | |
7048 | best we could do would be something like how many levels deep | |
7049 | and which index at that particular level, but that's going to | |
7050 | be less stable than filenames or function names. */ | |
7051 | ||
c906108c SS |
7052 | /* So for now, just use a global context. */ |
7053 | if (b->exp) | |
b8c9b27d | 7054 | xfree (b->exp); |
c906108c SS |
7055 | b->exp = parse_expression (b->exp_string); |
7056 | b->exp_valid_block = innermost_block; | |
7057 | mark = value_mark (); | |
7058 | if (b->val) | |
7059 | value_free (b->val); | |
7060 | b->val = evaluate_expression (b->exp); | |
7061 | release_value (b->val); | |
a881cf8e | 7062 | if (VALUE_LAZY (b->val) && b->enable_state == bp_enabled) |
c906108c SS |
7063 | value_fetch_lazy (b->val); |
7064 | ||
7065 | if (b->cond_string != NULL) | |
7066 | { | |
7067 | s = b->cond_string; | |
7068 | if (b->cond) | |
b8c9b27d | 7069 | xfree (b->cond); |
c5aa993b | 7070 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7071 | } |
b5de0fa7 | 7072 | if (b->enable_state == bp_enabled) |
c906108c SS |
7073 | mention (b); |
7074 | value_free_to_mark (mark); | |
7075 | break; | |
c5aa993b JM |
7076 | case bp_catch_catch: |
7077 | case bp_catch_throw: | |
c906108c | 7078 | break; |
c5aa993b JM |
7079 | /* We needn't really do anything to reset these, since the mask |
7080 | that requests them is unaffected by e.g., new libraries being | |
7081 | loaded. */ | |
c906108c SS |
7082 | case bp_catch_fork: |
7083 | case bp_catch_vfork: | |
7084 | case bp_catch_exec: | |
7085 | break; | |
c5aa993b | 7086 | |
c906108c SS |
7087 | default: |
7088 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7089 | /* fall through */ | |
1900040c MS |
7090 | /* Delete longjmp and overlay event breakpoints; they will be |
7091 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7092 | case bp_longjmp: |
7093 | case bp_longjmp_resume: | |
1900040c | 7094 | case bp_overlay_event: |
c906108c SS |
7095 | delete_breakpoint (b); |
7096 | break; | |
7097 | ||
c5aa993b JM |
7098 | /* This breakpoint is special, it's set up when the inferior |
7099 | starts and we really don't want to touch it. */ | |
c906108c SS |
7100 | case bp_shlib_event: |
7101 | ||
c4093a6a JM |
7102 | /* Like bp_shlib_event, this breakpoint type is special. |
7103 | Once it is set up, we do not want to touch it. */ | |
7104 | case bp_thread_event: | |
7105 | ||
c5aa993b JM |
7106 | /* Keep temporary breakpoints, which can be encountered when we step |
7107 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7108 | Otherwise these should have been blown away via the cleanup chain | |
7109 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7110 | case bp_until: |
7111 | case bp_finish: | |
7112 | case bp_watchpoint_scope: | |
7113 | case bp_call_dummy: | |
7114 | case bp_step_resume: | |
7115 | break; | |
7116 | } | |
7117 | ||
7118 | return 0; | |
7119 | } | |
7120 | ||
7121 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7122 | void | |
fba45db2 | 7123 | breakpoint_re_set (void) |
c906108c SS |
7124 | { |
7125 | struct breakpoint *b, *temp; | |
7126 | enum language save_language; | |
7127 | int save_input_radix; | |
7128 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7129 | char message[sizeof (message1) + 30 /* slop */ ]; |
7130 | ||
c906108c SS |
7131 | save_language = current_language->la_language; |
7132 | save_input_radix = input_radix; | |
7133 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7134 | { |
53a5351d JM |
7135 | /* Format possible error msg */ |
7136 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7137 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7138 | } | |
c906108c SS |
7139 | set_language (save_language); |
7140 | input_radix = save_input_radix; | |
7141 | ||
9df628e0 RE |
7142 | if (GET_LONGJMP_TARGET_P ()) |
7143 | { | |
7144 | create_longjmp_breakpoint ("longjmp"); | |
7145 | create_longjmp_breakpoint ("_longjmp"); | |
7146 | create_longjmp_breakpoint ("siglongjmp"); | |
7147 | create_longjmp_breakpoint ("_siglongjmp"); | |
7148 | create_longjmp_breakpoint (NULL); | |
7149 | } | |
1900040c MS |
7150 | |
7151 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7152 | } |
7153 | \f | |
c906108c SS |
7154 | /* Reset the thread number of this breakpoint: |
7155 | ||
7156 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7157 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7158 | void |
fba45db2 | 7159 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7160 | { |
7161 | if (b->thread != -1) | |
7162 | { | |
39f77062 KB |
7163 | if (in_thread_list (inferior_ptid)) |
7164 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7165 | } |
7166 | } | |
7167 | ||
03ac34d5 MS |
7168 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7169 | If from_tty is nonzero, it prints a message to that effect, | |
7170 | which ends with a period (no newline). */ | |
7171 | ||
c906108c | 7172 | void |
fba45db2 | 7173 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7174 | { |
7175 | register struct breakpoint *b; | |
7176 | ||
7177 | if (count < 0) | |
7178 | count = 0; | |
7179 | ||
7180 | ALL_BREAKPOINTS (b) | |
7181 | if (b->number == bptnum) | |
c5aa993b JM |
7182 | { |
7183 | b->ignore_count = count; | |
221ea385 KS |
7184 | if (from_tty) |
7185 | { | |
7186 | if (count == 0) | |
7187 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7188 | bptnum); | |
7189 | else if (count == 1) | |
7190 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7191 | bptnum); | |
7192 | else | |
7193 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7194 | count, bptnum); | |
7195 | } | |
c5aa993b | 7196 | breakpoints_changed (); |
221ea385 | 7197 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7198 | return; |
7199 | } | |
c906108c SS |
7200 | |
7201 | error ("No breakpoint number %d.", bptnum); | |
7202 | } | |
7203 | ||
7204 | /* Clear the ignore counts of all breakpoints. */ | |
7205 | void | |
fba45db2 | 7206 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7207 | { |
7208 | struct breakpoint *b; | |
7209 | ||
7210 | ALL_BREAKPOINTS (b) | |
7211 | b->ignore_count = 0; | |
7212 | } | |
7213 | ||
7214 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7215 | ||
7216 | static void | |
fba45db2 | 7217 | ignore_command (char *args, int from_tty) |
c906108c SS |
7218 | { |
7219 | char *p = args; | |
7220 | register int num; | |
7221 | ||
7222 | if (p == 0) | |
7223 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7224 | |
c906108c | 7225 | num = get_number (&p); |
5c44784c JM |
7226 | if (num == 0) |
7227 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7228 | if (*p == 0) |
7229 | error ("Second argument (specified ignore-count) is missing."); | |
7230 | ||
7231 | set_ignore_count (num, | |
7232 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7233 | from_tty); | |
221ea385 KS |
7234 | if (from_tty) |
7235 | printf_filtered ("\n"); | |
c906108c SS |
7236 | } |
7237 | \f | |
7238 | /* Call FUNCTION on each of the breakpoints | |
7239 | whose numbers are given in ARGS. */ | |
7240 | ||
7241 | static void | |
831662b3 | 7242 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7243 | { |
7244 | register char *p = args; | |
7245 | char *p1; | |
7246 | register int num; | |
5c44784c | 7247 | register struct breakpoint *b, *tmp; |
11cf8741 | 7248 | int match; |
c906108c SS |
7249 | |
7250 | if (p == 0) | |
7251 | error_no_arg ("one or more breakpoint numbers"); | |
7252 | ||
7253 | while (*p) | |
7254 | { | |
11cf8741 | 7255 | match = 0; |
c906108c | 7256 | p1 = p; |
c5aa993b | 7257 | |
5c44784c JM |
7258 | num = get_number_or_range (&p1); |
7259 | if (num == 0) | |
c5aa993b | 7260 | { |
5c44784c JM |
7261 | warning ("bad breakpoint number at or near '%s'", p); |
7262 | } | |
7263 | else | |
7264 | { | |
7265 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7266 | if (b->number == num) | |
7267 | { | |
7268 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7269 | match = 1; |
5c44784c JM |
7270 | function (b); |
7271 | if (related_breakpoint) | |
7272 | function (related_breakpoint); | |
11cf8741 | 7273 | break; |
5c44784c | 7274 | } |
11cf8741 JM |
7275 | if (match == 0) |
7276 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7277 | } |
c906108c SS |
7278 | p = p1; |
7279 | } | |
7280 | } | |
7281 | ||
1900040c MS |
7282 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7283 | If from_tty is nonzero, it prints a message to that effect, | |
7284 | which ends with a period (no newline). */ | |
7285 | ||
c906108c | 7286 | void |
fba45db2 | 7287 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7288 | { |
7289 | /* Never disable a watchpoint scope breakpoint; we want to | |
7290 | hit them when we leave scope so we can delete both the | |
7291 | watchpoint and its scope breakpoint at that time. */ | |
7292 | if (bpt->type == bp_watchpoint_scope) | |
7293 | return; | |
7294 | ||
c2c6d25f | 7295 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7296 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7297 | return; |
7298 | ||
b5de0fa7 | 7299 | bpt->enable_state = bp_disabled; |
c906108c | 7300 | |
9f60f21b | 7301 | check_duplicates (bpt); |
c906108c SS |
7302 | |
7303 | if (modify_breakpoint_hook) | |
7304 | modify_breakpoint_hook (bpt); | |
104c1213 | 7305 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7306 | } |
7307 | ||
7308 | /* ARGSUSED */ | |
7309 | static void | |
fba45db2 | 7310 | disable_command (char *args, int from_tty) |
c906108c SS |
7311 | { |
7312 | register struct breakpoint *bpt; | |
7313 | if (args == 0) | |
7314 | ALL_BREAKPOINTS (bpt) | |
7315 | switch (bpt->type) | |
c5aa993b JM |
7316 | { |
7317 | case bp_none: | |
53a5351d JM |
7318 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7319 | bpt->number); | |
c5aa993b JM |
7320 | continue; |
7321 | case bp_breakpoint: | |
7322 | case bp_catch_load: | |
7323 | case bp_catch_unload: | |
7324 | case bp_catch_fork: | |
7325 | case bp_catch_vfork: | |
7326 | case bp_catch_exec: | |
7327 | case bp_catch_catch: | |
7328 | case bp_catch_throw: | |
7329 | case bp_hardware_breakpoint: | |
7330 | case bp_watchpoint: | |
7331 | case bp_hardware_watchpoint: | |
7332 | case bp_read_watchpoint: | |
7333 | case bp_access_watchpoint: | |
7334 | disable_breakpoint (bpt); | |
7335 | default: | |
7336 | continue; | |
7337 | } | |
c906108c SS |
7338 | else |
7339 | map_breakpoint_numbers (args, disable_breakpoint); | |
7340 | } | |
7341 | ||
7342 | static void | |
fba45db2 | 7343 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7344 | { |
7345 | struct frame_info *save_selected_frame = NULL; | |
7346 | int save_selected_frame_level = -1; | |
7347 | int target_resources_ok, other_type_used; | |
7348 | struct value *mark; | |
7349 | ||
7350 | if (bpt->type == bp_hardware_breakpoint) | |
7351 | { | |
7352 | int i; | |
c5aa993b | 7353 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7354 | target_resources_ok = |
7355 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7356 | i + 1, 0); | |
c906108c | 7357 | if (target_resources_ok == 0) |
c5aa993b | 7358 | error ("No hardware breakpoint support in the target."); |
c906108c | 7359 | else if (target_resources_ok < 0) |
c5aa993b | 7360 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7361 | } |
7362 | ||
b5de0fa7 EZ |
7363 | if (bpt->enable_state != bp_permanent) |
7364 | bpt->enable_state = bp_enabled; | |
c906108c | 7365 | bpt->disposition = disposition; |
9f60f21b | 7366 | check_duplicates (bpt); |
c906108c SS |
7367 | breakpoints_changed (); |
7368 | ||
53a5351d JM |
7369 | if (bpt->type == bp_watchpoint || |
7370 | bpt->type == bp_hardware_watchpoint || | |
7371 | bpt->type == bp_read_watchpoint || | |
7372 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7373 | { |
7374 | if (bpt->exp_valid_block != NULL) | |
7375 | { | |
7376 | struct frame_info *fr = | |
101dcfbe | 7377 | fr = frame_find_by_id (bpt->watchpoint_frame); |
c906108c SS |
7378 | if (fr == NULL) |
7379 | { | |
7380 | printf_filtered ("\ | |
7381 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7382 | is valid is not currently in scope.\n", bpt->number); | |
b5de0fa7 | 7383 | bpt->enable_state = bp_disabled; |
c906108c SS |
7384 | return; |
7385 | } | |
7386 | ||
6e7f8b9c AC |
7387 | save_selected_frame = deprecated_selected_frame; |
7388 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
0f7d239c | 7389 | select_frame (fr); |
c906108c SS |
7390 | } |
7391 | ||
7392 | value_free (bpt->val); | |
7393 | mark = value_mark (); | |
7394 | bpt->val = evaluate_expression (bpt->exp); | |
7395 | release_value (bpt->val); | |
7396 | if (VALUE_LAZY (bpt->val)) | |
7397 | value_fetch_lazy (bpt->val); | |
7398 | ||
7399 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7400 | bpt->type == bp_read_watchpoint || |
7401 | bpt->type == bp_access_watchpoint) | |
7402 | { | |
7403 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7404 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7405 | ||
7406 | /* Hack around 'unused var' error for some targets here */ | |
7407 | (void) mem_cnt, i; | |
7408 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7409 | bpt->type, i + mem_cnt, other_type_used); | |
7410 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7411 | bp_watchpoint in the following condition */ | |
7412 | if (target_resources_ok < 0) | |
7413 | { | |
7414 | printf_filtered ("\ | |
c906108c SS |
7415 | Cannot enable watchpoint %d because target watch resources\n\ |
7416 | have been allocated for other watchpoints.\n", bpt->number); | |
b5de0fa7 | 7417 | bpt->enable_state = bp_disabled; |
c5aa993b JM |
7418 | value_free_to_mark (mark); |
7419 | return; | |
7420 | } | |
7421 | } | |
c906108c SS |
7422 | |
7423 | if (save_selected_frame_level >= 0) | |
0f7d239c | 7424 | select_frame (save_selected_frame); |
c906108c SS |
7425 | value_free_to_mark (mark); |
7426 | } | |
7427 | if (modify_breakpoint_hook) | |
7428 | modify_breakpoint_hook (bpt); | |
104c1213 | 7429 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7430 | } |
7431 | ||
7432 | void | |
fba45db2 | 7433 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7434 | { |
7435 | do_enable_breakpoint (bpt, bpt->disposition); | |
7436 | } | |
7437 | ||
7438 | /* The enable command enables the specified breakpoints (or all defined | |
7439 | breakpoints) so they once again become (or continue to be) effective | |
7440 | in stopping the inferior. */ | |
7441 | ||
7442 | /* ARGSUSED */ | |
7443 | static void | |
fba45db2 | 7444 | enable_command (char *args, int from_tty) |
c906108c SS |
7445 | { |
7446 | register struct breakpoint *bpt; | |
7447 | if (args == 0) | |
7448 | ALL_BREAKPOINTS (bpt) | |
7449 | switch (bpt->type) | |
c5aa993b JM |
7450 | { |
7451 | case bp_none: | |
53a5351d JM |
7452 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7453 | bpt->number); | |
c5aa993b JM |
7454 | continue; |
7455 | case bp_breakpoint: | |
7456 | case bp_catch_load: | |
7457 | case bp_catch_unload: | |
7458 | case bp_catch_fork: | |
7459 | case bp_catch_vfork: | |
7460 | case bp_catch_exec: | |
7461 | case bp_catch_catch: | |
7462 | case bp_catch_throw: | |
7463 | case bp_hardware_breakpoint: | |
7464 | case bp_watchpoint: | |
7465 | case bp_hardware_watchpoint: | |
7466 | case bp_read_watchpoint: | |
7467 | case bp_access_watchpoint: | |
7468 | enable_breakpoint (bpt); | |
7469 | default: | |
7470 | continue; | |
7471 | } | |
c906108c SS |
7472 | else |
7473 | map_breakpoint_numbers (args, enable_breakpoint); | |
7474 | } | |
7475 | ||
7476 | static void | |
fba45db2 | 7477 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7478 | { |
b5de0fa7 | 7479 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7480 | } |
7481 | ||
7482 | /* ARGSUSED */ | |
7483 | static void | |
fba45db2 | 7484 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7485 | { |
7486 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7487 | } | |
7488 | ||
7489 | static void | |
fba45db2 | 7490 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7491 | { |
b5de0fa7 | 7492 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7493 | } |
7494 | ||
7495 | /* ARGSUSED */ | |
7496 | static void | |
fba45db2 | 7497 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7498 | { |
7499 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7500 | } | |
7501 | \f | |
7502 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7503 | ||
7504 | struct symtabs_and_lines | |
fba45db2 | 7505 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7506 | { |
7507 | struct symtabs_and_lines sals; | |
7508 | if (string == 0) | |
7509 | error ("Empty line specification."); | |
7510 | if (default_breakpoint_valid) | |
7511 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7512 | default_breakpoint_symtab, |
7513 | default_breakpoint_line, | |
c5aa993b | 7514 | (char ***) NULL); |
c906108c SS |
7515 | else |
7516 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7517 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7518 | if (*string) |
7519 | error ("Junk at end of line specification: %s", string); | |
7520 | return sals; | |
7521 | } | |
7522 | \f | |
7523 | void | |
fba45db2 | 7524 | _initialize_breakpoint (void) |
c906108c SS |
7525 | { |
7526 | struct cmd_list_element *c; | |
7527 | ||
7528 | breakpoint_chain = 0; | |
7529 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7530 | before a breakpoint is set. */ | |
7531 | breakpoint_count = 0; | |
7532 | ||
7533 | add_com ("ignore", class_breakpoint, ignore_command, | |
7534 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7535 | Usage is `ignore N COUNT'."); | |
7536 | if (xdb_commands) | |
c5aa993b | 7537 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7538 | |
7539 | add_com ("commands", class_breakpoint, commands_command, | |
7540 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7541 | Give breakpoint number as argument after \"commands\".\n\ | |
7542 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7543 | The commands themselves follow starting on the next line.\n\ | |
7544 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7545 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7546 | then no output is printed when it is hit, except what the commands print."); | |
7547 | ||
7548 | add_com ("condition", class_breakpoint, condition_command, | |
7549 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7550 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7551 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7552 | |
c94fdfd0 EZ |
7553 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7554 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7555 | Like \"break\" except the breakpoint is only temporary,\n\ |
7556 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7557 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7558 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7559 | |
c94fdfd0 EZ |
7560 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7561 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7562 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7563 | some target hardware may not have this support."); | |
5ba2abeb | 7564 | set_cmd_completer (c, location_completer); |
c906108c | 7565 | |
c94fdfd0 EZ |
7566 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7567 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7568 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7569 | so it will be deleted when hit."); | |
5ba2abeb | 7570 | set_cmd_completer (c, location_completer); |
c906108c SS |
7571 | |
7572 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7573 | "Enable some breakpoints.\n\ | |
7574 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7575 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7576 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7577 | With a subcommand you can enable temporarily.", | |
7578 | &enablelist, "enable ", 1, &cmdlist); | |
7579 | if (xdb_commands) | |
c5aa993b JM |
7580 | add_com ("ab", class_breakpoint, enable_command, |
7581 | "Enable some breakpoints.\n\ | |
c906108c SS |
7582 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7583 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7584 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7585 | With a subcommand you can enable temporarily."); | |
7586 | ||
7587 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7588 | ||
7589 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7590 | "Enable some breakpoints.\n\ |
c906108c SS |
7591 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7592 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7593 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7594 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7595 | |
7596 | add_cmd ("once", no_class, enable_once_command, | |
7597 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7598 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7599 | &enablebreaklist); | |
7600 | ||
7601 | add_cmd ("delete", no_class, enable_delete_command, | |
7602 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7603 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7604 | &enablebreaklist); | |
7605 | ||
7606 | add_cmd ("delete", no_class, enable_delete_command, | |
7607 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7608 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7609 | &enablelist); | |
7610 | ||
7611 | add_cmd ("once", no_class, enable_once_command, | |
7612 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7613 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7614 | &enablelist); | |
7615 | ||
7616 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7617 | "Disable some breakpoints.\n\ |
c906108c SS |
7618 | Arguments are breakpoint numbers with spaces in between.\n\ |
7619 | To disable all breakpoints, give no argument.\n\ | |
7620 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7621 | &disablelist, "disable ", 1, &cmdlist); | |
7622 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7623 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7624 | if (xdb_commands) | |
c5aa993b JM |
7625 | add_com ("sb", class_breakpoint, disable_command, |
7626 | "Disable some breakpoints.\n\ | |
c906108c SS |
7627 | Arguments are breakpoint numbers with spaces in between.\n\ |
7628 | To disable all breakpoints, give no argument.\n\ | |
7629 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7630 | ||
7631 | add_cmd ("breakpoints", class_alias, disable_command, | |
7632 | "Disable some breakpoints.\n\ | |
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.\n\ | |
7636 | This command may be abbreviated \"disable\".", | |
7637 | &disablelist); | |
7638 | ||
7639 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7640 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7641 | Arguments are breakpoint numbers with spaces in between.\n\ |
7642 | To delete all breakpoints, give no argument.\n\ | |
7643 | \n\ | |
7644 | Also a prefix command for deletion of other GDB objects.\n\ | |
7645 | The \"unset\" command is also an alias for \"delete\".", | |
7646 | &deletelist, "delete ", 1, &cmdlist); | |
7647 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7648 | if (xdb_commands) | |
7649 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7650 | "Delete some breakpoints.\n\ |
c906108c SS |
7651 | Arguments are breakpoint numbers with spaces in between.\n\ |
7652 | To delete all breakpoints, give no argument.\n"); | |
7653 | ||
7654 | add_cmd ("breakpoints", class_alias, delete_command, | |
7655 | "Delete some breakpoints or auto-display expressions.\n\ | |
7656 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7657 | To delete all breakpoints, give no argument.\n\ | |
7658 | This command may be abbreviated \"delete\".", | |
7659 | &deletelist); | |
7660 | ||
7661 | add_com ("clear", class_breakpoint, clear_command, | |
7662 | concat ("Clear breakpoint at specified line or function.\n\ | |
7663 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7664 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7665 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7666 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7667 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7668 | is executing in.\n\ |
7669 | \n\ | |
7670 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7671 | ||
c94fdfd0 EZ |
7672 | c = add_com ("break", class_breakpoint, break_command, |
7673 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7674 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7675 | If line number is specified, break at start of code for that line.\n\ | |
7676 | If function is specified, break at start of code for that function.\n\ | |
7677 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7678 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7679 | This is useful for breaking on return to a stack frame.\n\ |
7680 | \n\ | |
7681 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7682 | \n\ | |
7683 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7684 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7685 | |
c906108c SS |
7686 | add_com_alias ("b", "break", class_run, 1); |
7687 | add_com_alias ("br", "break", class_run, 1); | |
7688 | add_com_alias ("bre", "break", class_run, 1); | |
7689 | add_com_alias ("brea", "break", class_run, 1); | |
7690 | ||
502fd408 | 7691 | if (xdb_commands) |
c906108c SS |
7692 | { |
7693 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7694 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7695 | } |
7696 | ||
7697 | if (dbx_commands) | |
7698 | { | |
c5aa993b JM |
7699 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7700 | "Break in function/address or break at a line in the current file.", | |
7701 | &stoplist, "stop ", 1, &cmdlist); | |
7702 | add_cmd ("in", class_breakpoint, stopin_command, | |
7703 | "Break in function or address.\n", &stoplist); | |
7704 | add_cmd ("at", class_breakpoint, stopat_command, | |
7705 | "Break at a line in the current file.\n", &stoplist); | |
7706 | add_com ("status", class_info, breakpoints_info, | |
7707 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7708 | The \"Type\" column indicates one of:\n\ |
7709 | \tbreakpoint - normal breakpoint\n\ | |
7710 | \twatchpoint - watchpoint\n\ | |
7711 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7712 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7713 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7714 | address and file/line number respectively.\n\n", | |
c5aa993b | 7715 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7716 | are set to the address of the last breakpoint listed.\n\n\ |
7717 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7718 | breakpoint set.", NULL)); | |
7719 | } | |
7720 | ||
7721 | add_info ("breakpoints", breakpoints_info, | |
7722 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7723 | The \"Type\" column indicates one of:\n\ | |
7724 | \tbreakpoint - normal breakpoint\n\ | |
7725 | \twatchpoint - watchpoint\n\ | |
7726 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7727 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7728 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7729 | address and file/line number respectively.\n\n", | |
c5aa993b | 7730 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7731 | are set to the address of the last breakpoint listed.\n\n\ |
7732 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7733 | breakpoint set.", NULL)); | |
7734 | ||
7735 | if (xdb_commands) | |
c5aa993b JM |
7736 | add_com ("lb", class_breakpoint, breakpoints_info, |
7737 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7738 | The \"Type\" column indicates one of:\n\ |
7739 | \tbreakpoint - normal breakpoint\n\ | |
7740 | \twatchpoint - watchpoint\n\ | |
7741 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7742 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7743 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7744 | address and file/line number respectively.\n\n", | |
c5aa993b | 7745 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7746 | are set to the address of the last breakpoint listed.\n\n\ |
7747 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7748 | breakpoint set.", NULL)); | |
7749 | ||
c906108c | 7750 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7751 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7752 | The \"Type\" column indicates one of:\n\ |
7753 | \tbreakpoint - normal breakpoint\n\ | |
7754 | \twatchpoint - watchpoint\n\ | |
7755 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7756 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7757 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7758 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7759 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7760 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7761 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7762 | address and file/line number respectively.\n\n", | |
c5aa993b | 7763 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7764 | are set to the address of the last breakpoint listed.\n\n\ |
7765 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7766 | breakpoint set.", NULL), | |
7767 | &maintenanceinfolist); | |
7768 | ||
c906108c | 7769 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7770 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7771 | Raised signals may be caught:\n\ |
7772 | \tcatch signal - all signals\n\ | |
7773 | \tcatch signal <signame> - a particular signal\n\ | |
7774 | Raised exceptions may be caught:\n\ | |
7775 | \tcatch throw - all exceptions, when thrown\n\ | |
7776 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7777 | \tcatch catch - all exceptions, when caught\n\ | |
7778 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7779 | Thread or process events may be caught:\n\ | |
7780 | \tcatch thread_start - any threads, just after creation\n\ | |
7781 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7782 | \tcatch thread_join - any threads, just after joins\n\ | |
7783 | Process events may be caught:\n\ | |
7784 | \tcatch start - any processes, just after creation\n\ | |
7785 | \tcatch exit - any processes, just before expiration\n\ | |
7786 | \tcatch fork - calls to fork()\n\ | |
7787 | \tcatch vfork - calls to vfork()\n\ | |
7788 | \tcatch exec - calls to exec()\n\ | |
7789 | Dynamically-linked library events may be caught:\n\ | |
7790 | \tcatch load - loads of any library\n\ | |
7791 | \tcatch load <libname> - loads of a particular library\n\ | |
7792 | \tcatch unload - unloads of any library\n\ | |
7793 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7794 | The act of your program's execution stopping may also be caught:\n\ | |
7795 | \tcatch stop\n\n\ | |
7796 | C++ exceptions may be caught:\n\ | |
7797 | \tcatch throw - all exceptions, when thrown\n\ | |
7798 | \tcatch catch - all exceptions, when caught\n\ | |
7799 | \n\ | |
7800 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7801 | after a fork or vfork is caught.\n\n\ | |
7802 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7803 | |
c906108c | 7804 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7805 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7806 | Args like \"catch\" command.\n\ |
7807 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7808 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7809 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7810 | |
c94fdfd0 EZ |
7811 | c = add_com ("watch", class_breakpoint, watch_command, |
7812 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7813 | A watchpoint stops execution of your program whenever the value of\n\ |
7814 | an expression changes."); | |
5ba2abeb | 7815 | set_cmd_completer (c, location_completer); |
c906108c | 7816 | |
c94fdfd0 EZ |
7817 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7818 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7819 | A watchpoint stops execution of your program whenever the value of\n\ |
7820 | an expression is read."); | |
5ba2abeb | 7821 | set_cmd_completer (c, location_completer); |
c906108c | 7822 | |
c94fdfd0 EZ |
7823 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7824 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7825 | A watchpoint stops execution of your program whenever the value of\n\ |
7826 | an expression is either read or written."); | |
5ba2abeb | 7827 | set_cmd_completer (c, location_completer); |
c906108c SS |
7828 | |
7829 | add_info ("watchpoints", breakpoints_info, | |
7830 | "Synonym for ``info breakpoints''."); | |
7831 | ||
7832 | ||
7833 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7834 | (char *) &can_use_hw_watchpoints, |
7835 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7836 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7837 | such is available. (However, any hardware watchpoints that were\n\ | |
7838 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7839 | hardware.)", | |
c5aa993b | 7840 | &setlist); |
c906108c SS |
7841 | add_show_from_set (c, &showlist); |
7842 | ||
7843 | can_use_hw_watchpoints = 1; | |
7844 | } |