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 watch_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 86 | |
e5d66720 PS |
87 | extern void break_at_finish_command (char *, int); |
88 | extern void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 89 | |
e5d66720 | 90 | extern void tbreak_at_finish_command (char *, int); |
7a292a7a | 91 | |
a14ed312 | 92 | static void break_command_1 (char *, int, int); |
c906108c | 93 | |
a14ed312 | 94 | static void mention (struct breakpoint *); |
c906108c | 95 | |
4d28f7a8 | 96 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 97 | |
9f60f21b | 98 | static void check_duplicates (struct breakpoint *); |
c906108c | 99 | |
76897487 KB |
100 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
101 | ||
102 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr); | |
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 | |
0bde7532 | 131 | static int remove_breakpoint (struct bp_location *, 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 | 237 | |
7cc221ef DJ |
238 | /* Similar iterators for the low-level breakpoints. */ |
239 | ||
240 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
241 | ||
242 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
243 | for (B = bp_location_chain; \ | |
244 | B ? (TMP=B->next, 1): 0; \ | |
245 | B = TMP) | |
246 | ||
c906108c SS |
247 | /* True if SHIFT_INST_REGS defined, false otherwise. */ |
248 | ||
249 | int must_shift_inst_regs = | |
250 | #if defined(SHIFT_INST_REGS) | |
251 | 1 | |
252 | #else | |
253 | 0 | |
254 | #endif | |
c5aa993b | 255 | ; |
c906108c SS |
256 | |
257 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
258 | ||
259 | int show_breakpoint_hit_counts = 1; | |
260 | ||
7cc221ef | 261 | /* Chains of all breakpoints defined. */ |
c906108c SS |
262 | |
263 | struct breakpoint *breakpoint_chain; | |
264 | ||
7cc221ef DJ |
265 | struct bp_location *bp_location_chain; |
266 | ||
c906108c SS |
267 | /* Number of last breakpoint made. */ |
268 | ||
269 | int breakpoint_count; | |
270 | ||
c5aa993b JM |
271 | /* Pointer to current exception event record */ |
272 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
273 | |
274 | /* Indicator of whether exception catchpoints should be nuked | |
275 | between runs of a program */ | |
276 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 277 | |
c906108c SS |
278 | /* Indicator of when exception catchpoints set-up should be |
279 | reinitialized -- e.g. when program is re-run */ | |
280 | int exception_support_initialized = 0; | |
281 | ||
282 | /* This function returns a pointer to the string representation of the | |
283 | pathname of the dynamically-linked library that has just been | |
284 | loaded. | |
285 | ||
286 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
287 | or undefined results are guaranteed. | |
288 | ||
289 | This string's contents are only valid immediately after the | |
290 | inferior has stopped in the dynamic linker hook, and becomes | |
291 | invalid as soon as the inferior is continued. Clients should make | |
292 | a copy of this string if they wish to continue the inferior and | |
293 | then access the string. */ | |
294 | ||
295 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
296 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
297 | #endif | |
298 | ||
299 | /* This function returns a pointer to the string representation of the | |
300 | pathname of the dynamically-linked library that has just been | |
301 | unloaded. | |
302 | ||
303 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
304 | TRUE, or undefined results are guaranteed. | |
305 | ||
306 | This string's contents are only valid immediately after the | |
307 | inferior has stopped in the dynamic linker hook, and becomes | |
308 | invalid as soon as the inferior is continued. Clients should make | |
309 | a copy of this string if they wish to continue the inferior and | |
310 | then access the string. */ | |
311 | ||
312 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
313 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
314 | #endif | |
315 | ||
316 | /* This function is called by the "catch load" command. It allows the | |
317 | debugger to be notified by the dynamic linker when a specified | |
318 | library file (or any library file, if filename is NULL) is loaded. */ | |
319 | ||
320 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
321 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
322 | error ("catch of library loads not yet implemented on this platform") | |
323 | #endif | |
324 | ||
325 | /* This function is called by the "catch unload" command. It allows | |
326 | the debugger to be notified by the dynamic linker when a specified | |
327 | library file (or any library file, if filename is NULL) is | |
328 | unloaded. */ | |
329 | ||
330 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
331 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
332 | error ("catch of library unloads not yet implemented on this platform") | |
333 | #endif | |
334 | ||
335 | /* Set breakpoint count to NUM. */ | |
336 | ||
337 | void | |
fba45db2 | 338 | set_breakpoint_count (int num) |
c906108c SS |
339 | { |
340 | breakpoint_count = num; | |
341 | set_internalvar (lookup_internalvar ("bpnum"), | |
342 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
343 | } | |
344 | ||
345 | /* Used in run_command to zero the hit count when a new run starts. */ | |
346 | ||
347 | void | |
fba45db2 | 348 | clear_breakpoint_hit_counts (void) |
c906108c SS |
349 | { |
350 | struct breakpoint *b; | |
351 | ||
352 | ALL_BREAKPOINTS (b) | |
353 | b->hit_count = 0; | |
354 | } | |
355 | ||
356 | /* Default address, symtab and line to put a breakpoint at | |
357 | for "break" command with no arg. | |
358 | if default_breakpoint_valid is zero, the other three are | |
359 | not valid, and "break" with no arg is an error. | |
360 | ||
361 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
362 | ||
363 | int default_breakpoint_valid; | |
364 | CORE_ADDR default_breakpoint_address; | |
365 | struct symtab *default_breakpoint_symtab; | |
366 | int default_breakpoint_line; | |
367 | \f | |
368 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
369 | Advance *PP after the string and any trailing whitespace. | |
370 | ||
371 | Currently the string can either be a number or "$" followed by the name | |
372 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
373 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
374 | ||
375 | TRAILER is a character which can be found after the number; most | |
376 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 377 | static int |
fba45db2 | 378 | get_number_trailer (char **pp, int trailer) |
c906108c | 379 | { |
5c44784c | 380 | int retval = 0; /* default */ |
c906108c SS |
381 | char *p = *pp; |
382 | ||
383 | if (p == NULL) | |
384 | /* Empty line means refer to the last breakpoint. */ | |
385 | return breakpoint_count; | |
386 | else if (*p == '$') | |
387 | { | |
388 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 389 | to pass to lookup_internalvar(). */ |
c906108c SS |
390 | char *varname; |
391 | char *start = ++p; | |
278cd55f | 392 | struct value *val; |
c906108c SS |
393 | |
394 | while (isalnum (*p) || *p == '_') | |
395 | p++; | |
396 | varname = (char *) alloca (p - start + 1); | |
397 | strncpy (varname, start, p - start); | |
398 | varname[p - start] = '\0'; | |
399 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
400 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
401 | retval = (int) value_as_long (val); | |
402 | else | |
403 | { | |
404 | printf_filtered ("Convenience variable must have integer value.\n"); | |
405 | retval = 0; | |
406 | } | |
c906108c SS |
407 | } |
408 | else | |
409 | { | |
410 | if (*p == '-') | |
411 | ++p; | |
412 | while (*p >= '0' && *p <= '9') | |
413 | ++p; | |
414 | if (p == *pp) | |
415 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
416 | { |
417 | /* Skip non-numeric token */ | |
418 | while (*p && !isspace((int) *p)) | |
419 | ++p; | |
420 | /* Return zero, which caller must interpret as error. */ | |
421 | retval = 0; | |
422 | } | |
423 | else | |
424 | retval = atoi (*pp); | |
425 | } | |
426 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
427 | { | |
428 | /* Trailing junk: return 0 and let caller print error msg. */ | |
429 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
430 | ++p; | |
431 | retval = 0; | |
c906108c | 432 | } |
c906108c SS |
433 | while (isspace (*p)) |
434 | p++; | |
435 | *pp = p; | |
436 | return retval; | |
437 | } | |
5c44784c | 438 | |
11cf8741 | 439 | |
5c44784c JM |
440 | /* Like get_number_trailer, but don't allow a trailer. */ |
441 | int | |
fba45db2 | 442 | get_number (char **pp) |
5c44784c JM |
443 | { |
444 | return get_number_trailer (pp, '\0'); | |
445 | } | |
446 | ||
447 | /* Parse a number or a range. | |
448 | * A number will be of the form handled by get_number. | |
449 | * A range will be of the form <number1> - <number2>, and | |
450 | * will represent all the integers between number1 and number2, | |
451 | * inclusive. | |
452 | * | |
453 | * While processing a range, this fuction is called iteratively; | |
454 | * At each call it will return the next value in the range. | |
455 | * | |
456 | * At the beginning of parsing a range, the char pointer PP will | |
457 | * be advanced past <number1> and left pointing at the '-' token. | |
458 | * Subsequent calls will not advance the pointer until the range | |
459 | * is completed. The call that completes the range will advance | |
460 | * pointer PP past <number2>. | |
461 | */ | |
462 | ||
463 | int | |
fba45db2 | 464 | get_number_or_range (char **pp) |
5c44784c JM |
465 | { |
466 | static int last_retval, end_value; | |
467 | static char *end_ptr; | |
468 | static int in_range = 0; | |
469 | ||
470 | if (**pp != '-') | |
471 | { | |
472 | /* Default case: pp is pointing either to a solo number, | |
473 | or to the first number of a range. */ | |
474 | last_retval = get_number_trailer (pp, '-'); | |
475 | if (**pp == '-') | |
476 | { | |
477 | char **temp; | |
478 | ||
479 | /* This is the start of a range (<number1> - <number2>). | |
480 | Skip the '-', parse and remember the second number, | |
481 | and also remember the end of the final token. */ | |
482 | ||
483 | temp = &end_ptr; | |
484 | end_ptr = *pp + 1; | |
485 | while (isspace ((int) *end_ptr)) | |
486 | end_ptr++; /* skip white space */ | |
487 | end_value = get_number (temp); | |
488 | if (end_value < last_retval) | |
489 | { | |
490 | error ("inverted range"); | |
491 | } | |
492 | else if (end_value == last_retval) | |
493 | { | |
494 | /* degenerate range (number1 == number2). Advance the | |
495 | token pointer so that the range will be treated as a | |
496 | single number. */ | |
497 | *pp = end_ptr; | |
498 | } | |
499 | else | |
500 | in_range = 1; | |
501 | } | |
502 | } | |
503 | else if (! in_range) | |
504 | error ("negative value"); | |
505 | else | |
506 | { | |
507 | /* pp points to the '-' that betokens a range. All | |
508 | number-parsing has already been done. Return the next | |
509 | integer value (one greater than the saved previous value). | |
510 | Do not advance the token pointer 'pp' until the end of range | |
511 | is reached. */ | |
512 | ||
513 | if (++last_retval == end_value) | |
514 | { | |
515 | /* End of range reached; advance token pointer. */ | |
516 | *pp = end_ptr; | |
517 | in_range = 0; | |
518 | } | |
519 | } | |
520 | return last_retval; | |
521 | } | |
522 | ||
523 | ||
c906108c SS |
524 | \f |
525 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
526 | ||
527 | static void | |
fba45db2 | 528 | condition_command (char *arg, int from_tty) |
c906108c | 529 | { |
52f0bd74 | 530 | struct breakpoint *b; |
c906108c | 531 | char *p; |
52f0bd74 | 532 | int bnum; |
c906108c SS |
533 | |
534 | if (arg == 0) | |
535 | error_no_arg ("breakpoint number"); | |
536 | ||
537 | p = arg; | |
538 | bnum = get_number (&p); | |
5c44784c JM |
539 | if (bnum == 0) |
540 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
541 | |
542 | ALL_BREAKPOINTS (b) | |
543 | if (b->number == bnum) | |
c5aa993b JM |
544 | { |
545 | if (b->cond) | |
546 | { | |
b8c9b27d | 547 | xfree (b->cond); |
c5aa993b JM |
548 | b->cond = 0; |
549 | } | |
550 | if (b->cond_string != NULL) | |
b8c9b27d | 551 | xfree (b->cond_string); |
c906108c | 552 | |
c5aa993b JM |
553 | if (*p == 0) |
554 | { | |
555 | b->cond = 0; | |
556 | b->cond_string = NULL; | |
557 | if (from_tty) | |
558 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
559 | } | |
560 | else | |
561 | { | |
562 | arg = p; | |
563 | /* I don't know if it matters whether this is the string the user | |
564 | typed in or the decompiled expression. */ | |
565 | b->cond_string = savestring (arg, strlen (arg)); | |
5cab636d | 566 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); |
c5aa993b JM |
567 | if (*arg) |
568 | error ("Junk at end of expression"); | |
569 | } | |
570 | breakpoints_changed (); | |
221ea385 | 571 | breakpoint_modify_event (b->number); |
c5aa993b JM |
572 | return; |
573 | } | |
c906108c SS |
574 | |
575 | error ("No breakpoint number %d.", bnum); | |
576 | } | |
577 | ||
c906108c | 578 | static void |
fba45db2 | 579 | commands_command (char *arg, int from_tty) |
c906108c | 580 | { |
52f0bd74 | 581 | struct breakpoint *b; |
c906108c | 582 | char *p; |
52f0bd74 | 583 | int bnum; |
c906108c SS |
584 | struct command_line *l; |
585 | ||
586 | /* If we allowed this, we would have problems with when to | |
587 | free the storage, if we change the commands currently | |
588 | being read from. */ | |
589 | ||
590 | if (executing_breakpoint_commands) | |
591 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
592 | ||
593 | p = arg; | |
594 | bnum = get_number (&p); | |
5c44784c | 595 | |
c906108c SS |
596 | if (p && *p) |
597 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 598 | |
c906108c SS |
599 | ALL_BREAKPOINTS (b) |
600 | if (b->number == bnum) | |
9ebf4acf AC |
601 | { |
602 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
603 | bnum); | |
604 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
605 | l = read_command_lines (tmpbuf, from_tty); | |
606 | do_cleanups (cleanups); | |
607 | free_command_lines (&b->commands); | |
608 | b->commands = l; | |
609 | breakpoints_changed (); | |
610 | breakpoint_modify_event (b->number); | |
611 | return; | |
c5aa993b | 612 | } |
c906108c SS |
613 | error ("No breakpoint number %d.", bnum); |
614 | } | |
615 | \f | |
616 | /* Like target_read_memory() but if breakpoints are inserted, return | |
617 | the shadow contents instead of the breakpoints themselves. | |
618 | ||
619 | Read "memory data" from whatever target or inferior we have. | |
620 | Returns zero if successful, errno value if not. EIO is used | |
621 | for address out of bounds. If breakpoints are inserted, returns | |
622 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
623 | ||
624 | int | |
fba45db2 | 625 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
626 | { |
627 | int status; | |
ffce0d52 | 628 | struct bp_location *b; |
c906108c SS |
629 | CORE_ADDR bp_addr = 0; |
630 | int bp_size = 0; | |
631 | ||
632 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
633 | /* No breakpoints on this machine. */ | |
634 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 635 | |
ffce0d52 | 636 | ALL_BP_LOCATIONS (b) |
c5aa993b | 637 | { |
ffce0d52 DJ |
638 | if (b->owner->type == bp_none) |
639 | warning ("reading through apparently deleted breakpoint #%d?", | |
640 | b->owner->number); | |
641 | ||
642 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 643 | continue; |
ffce0d52 | 644 | if (!b->inserted) |
c5aa993b JM |
645 | continue; |
646 | /* Addresses and length of the part of the breakpoint that | |
647 | we need to copy. */ | |
648 | /* XXXX The m68k, sh and h8300 have different local and remote | |
649 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
650 | correctly determine the breakpoints memory address and size | |
651 | for these targets. */ | |
ffce0d52 | 652 | bp_addr = b->address; |
c5aa993b JM |
653 | bp_size = 0; |
654 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
655 | continue; | |
656 | if (bp_size == 0) | |
657 | /* bp isn't valid */ | |
658 | continue; | |
659 | if (bp_addr + bp_size <= memaddr) | |
660 | /* The breakpoint is entirely before the chunk of memory we | |
661 | are reading. */ | |
662 | continue; | |
663 | if (bp_addr >= memaddr + len) | |
664 | /* The breakpoint is entirely after the chunk of memory we are | |
665 | reading. */ | |
666 | continue; | |
667 | /* Copy the breakpoint from the shadow contents, and recurse for | |
668 | the things before and after. */ | |
c906108c | 669 | { |
c5aa993b JM |
670 | /* Offset within shadow_contents. */ |
671 | int bptoffset = 0; | |
c906108c | 672 | |
c5aa993b JM |
673 | if (bp_addr < memaddr) |
674 | { | |
675 | /* Only copy the second part of the breakpoint. */ | |
676 | bp_size -= memaddr - bp_addr; | |
677 | bptoffset = memaddr - bp_addr; | |
678 | bp_addr = memaddr; | |
679 | } | |
680 | ||
681 | if (bp_addr + bp_size > memaddr + len) | |
682 | { | |
683 | /* Only copy the first part of the breakpoint. */ | |
684 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
685 | } | |
686 | ||
687 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 688 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
689 | |
690 | if (bp_addr > memaddr) | |
691 | { | |
692 | /* Copy the section of memory before the breakpoint. */ | |
693 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
694 | if (status != 0) | |
695 | return status; | |
696 | } | |
697 | ||
698 | if (bp_addr + bp_size < memaddr + len) | |
699 | { | |
700 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
701 | status = read_memory_nobpt (bp_addr + bp_size, |
702 | myaddr + bp_addr + bp_size - memaddr, | |
703 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
704 | if (status != 0) |
705 | return status; | |
706 | } | |
707 | return 0; | |
c906108c | 708 | } |
c5aa993b | 709 | } |
c906108c SS |
710 | /* Nothing overlaps. Just call read_memory_noerr. */ |
711 | return target_read_memory (memaddr, myaddr, len); | |
712 | } | |
c906108c | 713 | \f |
c5aa993b | 714 | |
687595f9 | 715 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 716 | static int |
687595f9 DJ |
717 | insert_catchpoint (struct ui_out *uo, void *args) |
718 | { | |
719 | struct breakpoint *b = (struct breakpoint *) args; | |
720 | int val = -1; | |
721 | ||
722 | switch (b->type) | |
723 | { | |
724 | case bp_catch_fork: | |
725 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
726 | break; | |
727 | case bp_catch_vfork: | |
728 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
729 | break; | |
730 | case bp_catch_exec: | |
731 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
732 | break; | |
733 | default: | |
1171114a | 734 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
735 | break; |
736 | } | |
737 | ||
738 | if (val < 0) | |
739 | throw_exception (RETURN_ERROR); | |
740 | ||
741 | return 0; | |
742 | } | |
743 | ||
879bfdc2 DJ |
744 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
745 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
746 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
747 | ||
748 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
749 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 750 | static int |
879bfdc2 | 751 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
752 | struct ui_file *tmp_error_stream, |
753 | int *disabled_breaks, int *process_warning, | |
754 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
755 | { |
756 | int val = 0; | |
757 | ||
758 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
759 | breakpoints should not be inserted. */ | |
760 | if (bpt->owner->enable_state != bp_enabled) | |
761 | return 0; | |
762 | ||
763 | if (bpt->inserted || bpt->duplicate) | |
764 | return 0; | |
765 | ||
766 | if (bpt->loc_type == bp_loc_software_breakpoint | |
767 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
768 | { | |
769 | /* First check to see if we have to handle an overlay. */ | |
770 | if (overlay_debugging == ovly_off | |
771 | || bpt->section == NULL | |
772 | || !(section_is_overlay (bpt->section))) | |
773 | { | |
774 | /* No overlay handling: just set the breakpoint. */ | |
775 | ||
776 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
777 | val = target_insert_hw_breakpoint (bpt->address, | |
778 | bpt->shadow_contents); | |
779 | else | |
780 | val = target_insert_breakpoint (bpt->address, | |
781 | bpt->shadow_contents); | |
782 | } | |
783 | else | |
784 | { | |
785 | /* This breakpoint is in an overlay section. | |
786 | Shall we set a breakpoint at the LMA? */ | |
787 | if (!overlay_events_enabled) | |
788 | { | |
789 | /* Yes -- overlay event support is not active, | |
790 | so we must try to set a breakpoint at the LMA. | |
791 | This will not work for a hardware breakpoint. */ | |
792 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
793 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
794 | bpt->owner->number); | |
795 | else | |
796 | { | |
797 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
798 | bpt->section); | |
799 | /* Set a software (trap) breakpoint at the LMA. */ | |
800 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
801 | if (val != 0) | |
802 | fprintf_unfiltered (tmp_error_stream, | |
803 | "Overlay breakpoint %d failed: in ROM?", | |
804 | bpt->owner->number); | |
805 | } | |
806 | } | |
807 | /* Shall we set a breakpoint at the VMA? */ | |
808 | if (section_is_mapped (bpt->section)) | |
809 | { | |
810 | /* Yes. This overlay section is mapped into memory. */ | |
811 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
812 | val = target_insert_hw_breakpoint (bpt->address, | |
813 | bpt->shadow_contents); | |
814 | else | |
815 | val = target_insert_breakpoint (bpt->address, | |
816 | bpt->shadow_contents); | |
817 | } | |
818 | else | |
819 | { | |
820 | /* No. This breakpoint will not be inserted. | |
821 | No error, but do not mark the bp as 'inserted'. */ | |
822 | return 0; | |
823 | } | |
824 | } | |
825 | ||
826 | if (val) | |
827 | { | |
828 | /* Can't set the breakpoint. */ | |
829 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
830 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
831 | { | |
832 | /* See also: disable_breakpoints_in_shlibs. */ | |
833 | val = 0; | |
834 | bpt->owner->enable_state = bp_shlib_disabled; | |
835 | if (!*disabled_breaks) | |
836 | { | |
837 | fprintf_unfiltered (tmp_error_stream, | |
838 | "Cannot insert breakpoint %d.\n", | |
839 | bpt->owner->number); | |
840 | fprintf_unfiltered (tmp_error_stream, | |
841 | "Temporarily disabling shared library breakpoints:\n"); | |
842 | } | |
843 | *disabled_breaks = 1; | |
844 | fprintf_unfiltered (tmp_error_stream, | |
845 | "breakpoint #%d\n", bpt->owner->number); | |
846 | } | |
847 | else | |
848 | #endif | |
849 | { | |
850 | #ifdef ONE_PROCESS_WRITETEXT | |
851 | *process_warning = 1; | |
852 | #endif | |
853 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
854 | { | |
855 | *hw_breakpoint_error = 1; | |
856 | fprintf_unfiltered (tmp_error_stream, | |
857 | "Cannot insert hardware breakpoint %d.\n", | |
858 | bpt->owner->number); | |
859 | } | |
860 | else | |
861 | { | |
862 | fprintf_unfiltered (tmp_error_stream, | |
863 | "Cannot insert breakpoint %d.\n", | |
864 | bpt->owner->number); | |
865 | fprintf_filtered (tmp_error_stream, | |
866 | "Error accessing memory address "); | |
867 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
868 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
869 | safe_strerror (val)); | |
870 | } | |
871 | ||
872 | } | |
873 | } | |
874 | else | |
875 | bpt->inserted = 1; | |
876 | ||
877 | return val; | |
878 | } | |
879 | ||
880 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
881 | /* NOTE drow/2003-09-08: This state only exists for removing | |
882 | watchpoints. It's not clear that it's necessary... */ | |
883 | && bpt->owner->disposition != disp_del_at_next_stop) | |
884 | { | |
885 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
886 | based on the expression. Ideally this should happen at a higher level, | |
887 | and there should be one bp_location for each computed address we | |
888 | must watch. As soon as a many-to-one mapping is available I'll | |
889 | convert this. */ | |
890 | ||
891 | struct frame_info *saved_frame; | |
892 | int saved_level, within_current_scope; | |
893 | struct value *mark = value_mark (); | |
894 | struct value *v; | |
895 | ||
896 | /* Save the current frame and level so we can restore it after | |
897 | evaluating the watchpoint expression on its own frame. */ | |
898 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
899 | took a frame parameter, so that we didn't have to change the | |
900 | selected frame. */ | |
901 | saved_frame = deprecated_selected_frame; | |
902 | saved_level = frame_relative_level (deprecated_selected_frame); | |
903 | ||
904 | /* Determine if the watchpoint is within scope. */ | |
905 | if (bpt->owner->exp_valid_block == NULL) | |
906 | within_current_scope = 1; | |
907 | else | |
908 | { | |
909 | struct frame_info *fi; | |
910 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
911 | within_current_scope = (fi != NULL); | |
912 | if (within_current_scope) | |
913 | select_frame (fi); | |
914 | } | |
915 | ||
916 | if (within_current_scope) | |
917 | { | |
918 | /* Evaluate the expression and cut the chain of values | |
919 | produced off from the value chain. | |
920 | ||
921 | Make sure the value returned isn't lazy; we use | |
922 | laziness to determine what memory GDB actually needed | |
923 | in order to compute the value of the expression. */ | |
924 | v = evaluate_expression (bpt->owner->exp); | |
925 | VALUE_CONTENTS (v); | |
926 | value_release_to_mark (mark); | |
927 | ||
928 | bpt->owner->val_chain = v; | |
929 | bpt->inserted = 1; | |
930 | ||
931 | /* Look at each value on the value chain. */ | |
932 | for (; v; v = v->next) | |
933 | { | |
934 | /* If it's a memory location, and GDB actually needed | |
935 | its contents to evaluate the expression, then we | |
936 | must watch it. */ | |
937 | if (VALUE_LVAL (v) == lval_memory | |
938 | && ! VALUE_LAZY (v)) | |
939 | { | |
940 | struct type *vtype = check_typedef (VALUE_TYPE (v)); | |
941 | ||
942 | /* We only watch structs and arrays if user asked | |
943 | for it explicitly, never if they just happen to | |
944 | appear in the middle of some value chain. */ | |
945 | if (v == bpt->owner->val_chain | |
946 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
947 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
948 | { | |
949 | CORE_ADDR addr; | |
950 | int len, type; | |
951 | ||
952 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
953 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
954 | type = hw_write; | |
955 | if (bpt->owner->type == bp_read_watchpoint) | |
956 | type = hw_read; | |
957 | else if (bpt->owner->type == bp_access_watchpoint) | |
958 | type = hw_access; | |
959 | ||
960 | val = target_insert_watchpoint (addr, len, type); | |
961 | if (val == -1) | |
962 | { | |
963 | /* Don't exit the loop, try to insert | |
964 | every value on the value chain. That's | |
965 | because we will be removing all the | |
966 | watches below, and removing a | |
967 | watchpoint we didn't insert could have | |
968 | adverse effects. */ | |
969 | bpt->inserted = 0; | |
970 | } | |
971 | val = 0; | |
972 | } | |
973 | } | |
974 | } | |
975 | /* Failure to insert a watchpoint on any memory value in the | |
976 | value chain brings us here. */ | |
977 | if (!bpt->inserted) | |
978 | { | |
0bde7532 | 979 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
980 | *hw_breakpoint_error = 1; |
981 | fprintf_unfiltered (tmp_error_stream, | |
982 | "Could not insert hardware watchpoint %d.\n", | |
983 | bpt->owner->number); | |
984 | val = -1; | |
985 | } | |
986 | } | |
987 | else | |
988 | { | |
989 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
990 | printf_filtered ("because the program has left the block \n"); | |
991 | printf_filtered ("in which its expression is valid.\n"); | |
992 | if (bpt->owner->related_breakpoint) | |
993 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
994 | bpt->owner->disposition = disp_del_at_next_stop; | |
995 | } | |
996 | ||
997 | /* Restore the frame and level. */ | |
998 | if (saved_frame != deprecated_selected_frame | |
999 | || saved_level != frame_relative_level (deprecated_selected_frame)) | |
1000 | select_frame (saved_frame); | |
1001 | ||
1002 | return val; | |
1003 | } | |
1004 | ||
1005 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1006 | { | |
1007 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1008 | breakpoint. Once again, it would be better if this was represented | |
1009 | as two bp_locations. */ | |
1010 | ||
1011 | /* If we get here, we must have a callback mechanism for exception | |
1012 | events -- with g++ style embedded label support, we insert | |
1013 | ordinary breakpoints and not catchpoints. */ | |
1014 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1015 | if (val) | |
1016 | { | |
1017 | /* Couldn't set breakpoint for some reason */ | |
1018 | fprintf_unfiltered (tmp_error_stream, | |
1019 | "Cannot insert catchpoint %d; disabling it.\n", | |
1020 | bpt->owner->number); | |
1021 | fprintf_filtered (tmp_error_stream, | |
1022 | "Error accessing memory address "); | |
1023 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1024 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1025 | safe_strerror (val)); | |
1026 | bpt->owner->enable_state = bp_disabled; | |
1027 | } | |
1028 | else | |
1029 | { | |
1030 | /* Bp set, now make sure callbacks are enabled */ | |
1031 | /* Format possible error msg */ | |
1032 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1033 | bpt->owner->number); | |
1034 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1035 | int val; | |
1036 | args_for_catchpoint_enable args; | |
1037 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1038 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1039 | args.enable_p = 1; | |
1040 | val = catch_errors (cover_target_enable_exception_callback, | |
1041 | &args, message, RETURN_MASK_ALL); | |
1042 | do_cleanups (cleanups); | |
1043 | if (val != 0 && val != -1) | |
1044 | bpt->inserted = 1; | |
1045 | ||
1046 | /* Check if something went wrong; val == 0 can be ignored */ | |
1047 | if (val == -1) | |
1048 | { | |
1049 | /* something went wrong */ | |
1050 | fprintf_unfiltered (tmp_error_stream, | |
1051 | "Cannot insert catchpoint %d; disabling it.\n", | |
1052 | bpt->owner->number); | |
1053 | bpt->owner->enable_state = bp_disabled; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | return val; | |
1058 | } | |
1059 | ||
1060 | else if (bpt->owner->type == bp_catch_fork | |
1061 | || bpt->owner->type == bp_catch_vfork | |
1062 | || bpt->owner->type == bp_catch_exec) | |
1063 | { | |
1064 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1065 | bpt->owner->number); | |
1066 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1067 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1068 | RETURN_MASK_ERROR); | |
1069 | do_cleanups (cleanups); | |
1070 | if (val < 0) | |
1071 | bpt->owner->enable_state = bp_disabled; | |
1072 | else | |
1073 | bpt->inserted = 1; | |
1074 | return val; | |
1075 | } | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
c906108c SS |
1080 | /* insert_breakpoints is used when starting or continuing the program. |
1081 | remove_breakpoints is used when the program stops. | |
1082 | Both return zero if successful, | |
1083 | or an `errno' value if could not write the inferior. */ | |
1084 | ||
1085 | int | |
fba45db2 | 1086 | insert_breakpoints (void) |
c906108c | 1087 | { |
879bfdc2 | 1088 | struct bp_location *b, *temp; |
53a5351d | 1089 | int return_val = 0; /* return success code. */ |
c906108c SS |
1090 | int val = 0; |
1091 | int disabled_breaks = 0; | |
81d0cc19 GS |
1092 | int hw_breakpoint_error = 0; |
1093 | int process_warning = 0; | |
c906108c | 1094 | |
81d0cc19 GS |
1095 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1096 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1097 | ||
1098 | /* Explicitly mark the warning -- this will only be printed if | |
1099 | there was an error. */ | |
1100 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1101 | |
879bfdc2 DJ |
1102 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1103 | { | |
1104 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1105 | breakpoints should not be inserted. */ | |
1106 | if (b->owner->enable_state != bp_enabled) | |
1107 | continue; | |
1108 | ||
1109 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1110 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1111 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1112 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1113 | { | |
1114 | struct value *val; | |
1115 | val = evaluate_expression (b->owner->exp); | |
1116 | release_value (val); | |
1117 | if (VALUE_LAZY (val)) | |
1118 | value_fetch_lazy (val); | |
1119 | b->owner->val = val; | |
1120 | } | |
a881cf8e | 1121 | |
879bfdc2 DJ |
1122 | val = insert_bp_location (b, tmp_error_stream, |
1123 | &disabled_breaks, &process_warning, | |
1124 | &hw_breakpoint_error); | |
1125 | if (val) | |
1126 | return_val = val; | |
1127 | } | |
c906108c | 1128 | |
879bfdc2 | 1129 | if (return_val) |
81d0cc19 GS |
1130 | { |
1131 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1132 | message about possibly exhausted resources. */ | |
879bfdc2 | 1133 | if (hw_breakpoint_error) |
81d0cc19 | 1134 | { |
c6510018 MS |
1135 | fprintf_unfiltered (tmp_error_stream, |
1136 | "Could not insert hardware breakpoints:\n\ | |
1137 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1138 | } |
c6510018 | 1139 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1140 | if (process_warning) |
c6510018 MS |
1141 | fprintf_unfiltered (tmp_error_stream, |
1142 | "The same program may be running in another process."); | |
1143 | #endif | |
81d0cc19 GS |
1144 | target_terminal_ours_for_output (); |
1145 | error_stream (tmp_error_stream); | |
1146 | } | |
53a5351d | 1147 | return return_val; |
c906108c SS |
1148 | } |
1149 | ||
c906108c | 1150 | int |
fba45db2 | 1151 | remove_breakpoints (void) |
c906108c | 1152 | { |
0bde7532 | 1153 | struct bp_location *b; |
c906108c SS |
1154 | int val; |
1155 | ||
0bde7532 | 1156 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1157 | { |
0bde7532 | 1158 | if (b->inserted) |
c5aa993b JM |
1159 | { |
1160 | val = remove_breakpoint (b, mark_uninserted); | |
1161 | if (val != 0) | |
1162 | return val; | |
1163 | } | |
1164 | } | |
c906108c SS |
1165 | return 0; |
1166 | } | |
1167 | ||
692590c1 | 1168 | int |
80ce1ecb | 1169 | remove_hw_watchpoints (void) |
692590c1 | 1170 | { |
0bde7532 | 1171 | struct bp_location *b; |
692590c1 MS |
1172 | int val; |
1173 | ||
0bde7532 | 1174 | ALL_BP_LOCATIONS (b) |
692590c1 | 1175 | { |
0bde7532 | 1176 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1177 | { |
1178 | val = remove_breakpoint (b, mark_uninserted); | |
1179 | if (val != 0) | |
1180 | return val; | |
1181 | } | |
1182 | } | |
1183 | return 0; | |
1184 | } | |
1185 | ||
c906108c | 1186 | int |
fba45db2 | 1187 | reattach_breakpoints (int pid) |
c906108c | 1188 | { |
0bde7532 | 1189 | struct bp_location *b; |
c906108c | 1190 | int val; |
ce696e05 | 1191 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1192 | |
ce696e05 KB |
1193 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1194 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1195 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1196 | { |
0bde7532 | 1197 | if (b->inserted) |
c5aa993b JM |
1198 | { |
1199 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1200 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1201 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1202 | else |
0bde7532 DJ |
1203 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1204 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1205 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1206 | if (val != 0) |
1207 | { | |
ce696e05 | 1208 | do_cleanups (old_chain); |
c5aa993b JM |
1209 | return val; |
1210 | } | |
1211 | } | |
1212 | } | |
ce696e05 | 1213 | do_cleanups (old_chain); |
c906108c SS |
1214 | return 0; |
1215 | } | |
1216 | ||
1217 | void | |
fba45db2 | 1218 | update_breakpoints_after_exec (void) |
c906108c | 1219 | { |
c5aa993b JM |
1220 | struct breakpoint *b; |
1221 | struct breakpoint *temp; | |
c906108c SS |
1222 | |
1223 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1224 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1225 | shadow is NOT valid after an exec()! */ | |
1226 | mark_breakpoints_out (); | |
1227 | ||
1228 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1229 | { |
1230 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1231 | if (b->type == bp_shlib_event) | |
1232 | { | |
1233 | delete_breakpoint (b); | |
1234 | continue; | |
1235 | } | |
c906108c | 1236 | |
1900040c MS |
1237 | /* Thread event breakpoints must be set anew after an exec(), |
1238 | as must overlay event breakpoints. */ | |
1239 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1240 | { |
1241 | delete_breakpoint (b); | |
1242 | continue; | |
1243 | } | |
1244 | ||
c5aa993b JM |
1245 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1246 | if (b->type == bp_step_resume) | |
1247 | { | |
1248 | delete_breakpoint (b); | |
1249 | continue; | |
1250 | } | |
1251 | ||
1252 | /* Ditto the sigtramp handler breakpoints. */ | |
1253 | if (b->type == bp_through_sigtramp) | |
1254 | { | |
1255 | delete_breakpoint (b); | |
1256 | continue; | |
1257 | } | |
1258 | ||
1259 | /* Ditto the exception-handling catchpoints. */ | |
1260 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1261 | { | |
1262 | delete_breakpoint (b); | |
1263 | continue; | |
1264 | } | |
1265 | ||
1266 | /* Don't delete an exec catchpoint, because else the inferior | |
1267 | won't stop when it ought! | |
1268 | ||
1269 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1270 | on this target, we may not be able to stop when the vfork is |
1271 | seen, but only when the subsequent exec is seen. (And because | |
1272 | deleting fork catchpoints here but not vfork catchpoints will | |
1273 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1274 | |
1275 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1276 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1277 | automagically. Certainly on HP-UX that's true. |
1278 | ||
1279 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1280 | valid code address on some platforms (like the mn10300 |
1281 | simulators). We shouldn't assign any special interpretation to | |
1282 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1283 | I can't see what that comment above is talking about. As far | |
1284 | as I can tell, setting the address of a | |
644a1fe1 JB |
1285 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1286 | is meaningless, since those are implemented with HP-UX kernel | |
1287 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1288 | if ((b->type == bp_catch_exec) || |
1289 | (b->type == bp_catch_vfork) || | |
1290 | (b->type == bp_catch_fork)) | |
1291 | { | |
5cab636d | 1292 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1293 | continue; |
1294 | } | |
1295 | ||
1296 | /* bp_finish is a special case. The only way we ought to be able | |
1297 | to see one of these when an exec() has happened, is if the user | |
1298 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1299 | carries them to the call-site of the current callee, by setting | |
1300 | a temporary bp there and resuming. But in this case, the finish | |
1301 | will carry them entirely through the vfork & exec. | |
1302 | ||
1303 | We don't want to allow a bp_finish to remain inserted now. But | |
1304 | we can't safely delete it, 'cause finish_command has a handle to | |
1305 | the bp on a bpstat, and will later want to delete it. There's a | |
1306 | chance (and I've seen it happen) that if we delete the bp_finish | |
1307 | here, that its storage will get reused by the time finish_command | |
1308 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1309 | We really must allow finish_command to delete a bp_finish. | |
1310 | ||
53a5351d JM |
1311 | In the absense of a general solution for the "how do we know |
1312 | it's safe to delete something others may have handles to?" | |
1313 | problem, what we'll do here is just uninsert the bp_finish, and | |
1314 | let finish_command delete it. | |
1315 | ||
1316 | (We know the bp_finish is "doomed" in the sense that it's | |
1317 | momentary, and will be deleted as soon as finish_command sees | |
1318 | the inferior stopped. So it doesn't matter that the bp's | |
1319 | address is probably bogus in the new a.out, unlike e.g., the | |
1320 | solib breakpoints.) */ | |
c5aa993b | 1321 | |
c5aa993b JM |
1322 | if (b->type == bp_finish) |
1323 | { | |
1324 | continue; | |
1325 | } | |
1326 | ||
1327 | /* Without a symbolic address, we have little hope of the | |
1328 | pre-exec() address meaning the same thing in the post-exec() | |
1329 | a.out. */ | |
1330 | if (b->addr_string == NULL) | |
1331 | { | |
1332 | delete_breakpoint (b); | |
1333 | continue; | |
1334 | } | |
1335 | ||
1336 | /* If this breakpoint has survived the above battery of checks, then | |
1337 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1338 | to a target address, rather than reusing the old evaluation. |
1339 | ||
1340 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1341 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1342 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1343 | the breakpoint's address from scratch, or deletes it if it can't. | |
1344 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1345 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1346 | } |
1900040c MS |
1347 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1348 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1349 | } |
1350 | ||
1351 | int | |
fba45db2 | 1352 | detach_breakpoints (int pid) |
c906108c | 1353 | { |
0bde7532 | 1354 | struct bp_location *b; |
c906108c | 1355 | int val; |
ce696e05 | 1356 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1357 | |
39f77062 KB |
1358 | if (pid == PIDGET (inferior_ptid)) |
1359 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1360 | |
ce696e05 KB |
1361 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1362 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1363 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1364 | { |
0bde7532 | 1365 | if (b->inserted) |
c5aa993b JM |
1366 | { |
1367 | val = remove_breakpoint (b, mark_inserted); | |
1368 | if (val != 0) | |
1369 | { | |
ce696e05 | 1370 | do_cleanups (old_chain); |
c5aa993b JM |
1371 | return val; |
1372 | } | |
1373 | } | |
1374 | } | |
ce696e05 | 1375 | do_cleanups (old_chain); |
c906108c SS |
1376 | return 0; |
1377 | } | |
1378 | ||
1379 | static int | |
0bde7532 | 1380 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1381 | { |
1382 | int val; | |
c5aa993b | 1383 | |
0bde7532 | 1384 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1385 | /* Permanent breakpoints cannot be inserted or removed. */ |
1386 | return 0; | |
1387 | ||
0bde7532 | 1388 | if (b->owner->type == bp_none) |
53a5351d | 1389 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1390 | b->owner->number); |
1391 | ||
1392 | if (b->loc_type == bp_loc_software_breakpoint | |
1393 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1394 | { |
c02f5703 MS |
1395 | /* "Normal" instruction breakpoint: either the standard |
1396 | trap-instruction bp (bp_breakpoint), or a | |
1397 | bp_hardware_breakpoint. */ | |
1398 | ||
1399 | /* First check to see if we have to handle an overlay. */ | |
1400 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1401 | || b->section == NULL |
1402 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1403 | { |
1404 | /* No overlay handling: just remove the breakpoint. */ | |
1405 | ||
0bde7532 DJ |
1406 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1407 | val = target_remove_hw_breakpoint (b->address, | |
1408 | b->shadow_contents); | |
c02f5703 | 1409 | else |
0bde7532 | 1410 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1411 | } |
c906108c SS |
1412 | else |
1413 | { | |
c02f5703 MS |
1414 | /* This breakpoint is in an overlay section. |
1415 | Did we set a breakpoint at the LMA? */ | |
1416 | if (!overlay_events_enabled) | |
1417 | { | |
1418 | /* Yes -- overlay event support is not active, so we | |
1419 | should have set a breakpoint at the LMA. Remove it. | |
1420 | */ | |
0bde7532 DJ |
1421 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1422 | b->section); | |
c02f5703 MS |
1423 | /* Ignore any failures: if the LMA is in ROM, we will |
1424 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1425 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1426 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1427 | else |
0bde7532 | 1428 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1429 | } |
1430 | /* Did we set a breakpoint at the VMA? | |
1431 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1432 | if (b->inserted) |
c906108c | 1433 | { |
c02f5703 MS |
1434 | /* Yes -- remove it. Previously we did not bother to |
1435 | remove the breakpoint if the section had been | |
1436 | unmapped, but let's not rely on that being safe. We | |
1437 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1438 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1439 | val = target_remove_hw_breakpoint (b->address, | |
1440 | b->shadow_contents); | |
c02f5703 | 1441 | else |
0bde7532 DJ |
1442 | val = target_remove_breakpoint (b->address, |
1443 | b->shadow_contents); | |
c906108c | 1444 | } |
c02f5703 MS |
1445 | else |
1446 | { | |
1447 | /* No -- not inserted, so no need to remove. No error. */ | |
1448 | val = 0; | |
1449 | } | |
c906108c SS |
1450 | } |
1451 | if (val) | |
1452 | return val; | |
0bde7532 | 1453 | b->inserted = (is == mark_inserted); |
c906108c | 1454 | } |
0bde7532 DJ |
1455 | else if (b->loc_type == bp_loc_hardware_watchpoint |
1456 | && b->owner->enable_state == bp_enabled | |
1457 | && !b->duplicate) | |
c906108c | 1458 | { |
278cd55f AC |
1459 | struct value *v; |
1460 | struct value *n; | |
c5aa993b | 1461 | |
0bde7532 | 1462 | b->inserted = (is == mark_inserted); |
c906108c | 1463 | /* Walk down the saved value chain. */ |
0bde7532 | 1464 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1465 | { |
1466 | /* For each memory reference remove the watchpoint | |
1467 | at that address. */ | |
5c44784c JM |
1468 | if (VALUE_LVAL (v) == lval_memory |
1469 | && ! VALUE_LAZY (v)) | |
c906108c | 1470 | { |
2e70b7b9 MS |
1471 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1472 | ||
0bde7532 | 1473 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1474 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1475 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1476 | { | |
1477 | CORE_ADDR addr; | |
1478 | int len, type; | |
1479 | ||
1480 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1481 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1482 | type = hw_write; | |
0bde7532 | 1483 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1484 | type = hw_read; |
0bde7532 | 1485 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1486 | type = hw_access; |
1487 | ||
1488 | val = target_remove_watchpoint (addr, len, type); | |
1489 | if (val == -1) | |
0bde7532 | 1490 | b->inserted = 1; |
2e70b7b9 MS |
1491 | val = 0; |
1492 | } | |
c906108c SS |
1493 | } |
1494 | } | |
1495 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1496 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1497 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1498 | b->owner->number); |
c5aa993b | 1499 | |
c906108c | 1500 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1501 | the next time the watchpoint is inserted. */ |
0bde7532 | 1502 | for (v = b->owner->val_chain; v; v = n) |
c906108c SS |
1503 | { |
1504 | n = v->next; | |
1505 | value_free (v); | |
1506 | } | |
0bde7532 | 1507 | b->owner->val_chain = NULL; |
c906108c | 1508 | } |
0bde7532 DJ |
1509 | else if ((b->owner->type == bp_catch_fork || |
1510 | b->owner->type == bp_catch_vfork || | |
1511 | b->owner->type == bp_catch_exec) | |
1512 | && b->owner->enable_state == bp_enabled | |
1513 | && !b->duplicate) | |
c906108c SS |
1514 | { |
1515 | val = -1; | |
0bde7532 | 1516 | switch (b->owner->type) |
c5aa993b JM |
1517 | { |
1518 | case bp_catch_fork: | |
39f77062 | 1519 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1520 | break; |
1521 | case bp_catch_vfork: | |
39f77062 | 1522 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1523 | break; |
1524 | case bp_catch_exec: | |
39f77062 | 1525 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1526 | break; |
ac9a91a7 | 1527 | default: |
53a5351d | 1528 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1529 | break; |
c5aa993b | 1530 | } |
c906108c SS |
1531 | if (val) |
1532 | return val; | |
0bde7532 | 1533 | b->inserted = (is == mark_inserted); |
c906108c | 1534 | } |
0bde7532 DJ |
1535 | else if ((b->owner->type == bp_catch_catch || |
1536 | b->owner->type == bp_catch_throw) | |
1537 | && b->owner->enable_state == bp_enabled | |
1538 | && !b->duplicate) | |
c906108c SS |
1539 | { |
1540 | ||
0bde7532 | 1541 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1542 | if (val) |
c5aa993b | 1543 | return val; |
0bde7532 | 1544 | b->inserted = (is == mark_inserted); |
c906108c | 1545 | } |
0bde7532 DJ |
1546 | else if (ep_is_exception_catchpoint (b->owner) |
1547 | && b->inserted /* sometimes previous insert doesn't happen */ | |
1548 | && b->owner->enable_state == bp_enabled | |
1549 | && !b->duplicate) | |
c906108c SS |
1550 | { |
1551 | ||
0bde7532 | 1552 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1553 | if (val) |
c5aa993b JM |
1554 | return val; |
1555 | ||
0bde7532 | 1556 | b->inserted = (is == mark_inserted); |
c906108c SS |
1557 | } |
1558 | ||
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | /* Clear the "inserted" flag in all breakpoints. */ | |
1563 | ||
1564 | void | |
fba45db2 | 1565 | mark_breakpoints_out (void) |
c906108c | 1566 | { |
075f6582 | 1567 | struct bp_location *bpt; |
c906108c | 1568 | |
075f6582 DJ |
1569 | ALL_BP_LOCATIONS (bpt) |
1570 | bpt->inserted = 0; | |
c906108c SS |
1571 | } |
1572 | ||
53a5351d JM |
1573 | /* Clear the "inserted" flag in all breakpoints and delete any |
1574 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1575 | |
1576 | Plus other such housekeeping that has to be done for breakpoints | |
1577 | between runs. | |
1578 | ||
53a5351d JM |
1579 | Note: this function gets called at the end of a run (by |
1580 | generic_mourn_inferior) and when a run begins (by | |
1581 | init_wait_for_inferior). */ | |
c906108c SS |
1582 | |
1583 | ||
1584 | ||
1585 | void | |
fba45db2 | 1586 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1587 | { |
52f0bd74 | 1588 | struct breakpoint *b, *temp; |
075f6582 | 1589 | struct bp_location *bpt; |
c906108c SS |
1590 | static int warning_needed = 0; |
1591 | ||
075f6582 DJ |
1592 | ALL_BP_LOCATIONS (bpt) |
1593 | bpt->inserted = 0; | |
1594 | ||
c906108c | 1595 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1596 | { |
c5aa993b JM |
1597 | switch (b->type) |
1598 | { | |
1599 | case bp_call_dummy: | |
1600 | case bp_watchpoint_scope: | |
c906108c | 1601 | |
c5aa993b JM |
1602 | /* If the call dummy breakpoint is at the entry point it will |
1603 | cause problems when the inferior is rerun, so we better | |
1604 | get rid of it. | |
c906108c | 1605 | |
c5aa993b JM |
1606 | Also get rid of scope breakpoints. */ |
1607 | delete_breakpoint (b); | |
1608 | break; | |
c906108c | 1609 | |
c5aa993b JM |
1610 | case bp_watchpoint: |
1611 | case bp_hardware_watchpoint: | |
1612 | case bp_read_watchpoint: | |
1613 | case bp_access_watchpoint: | |
c906108c | 1614 | |
c5aa993b JM |
1615 | /* Likewise for watchpoints on local expressions. */ |
1616 | if (b->exp_valid_block != NULL) | |
1617 | delete_breakpoint (b); | |
c860120c PM |
1618 | if (context == inf_starting) |
1619 | { | |
1620 | /* Reset val field to force reread of starting value | |
1621 | in insert_breakpoints. */ | |
1622 | if (b->val) | |
1623 | value_free (b->val); | |
1624 | b->val = NULL; | |
1625 | } | |
c5aa993b JM |
1626 | break; |
1627 | default: | |
1628 | /* Likewise for exception catchpoints in dynamic-linked | |
1629 | executables where required */ | |
1630 | if (ep_is_exception_catchpoint (b) && | |
1631 | exception_catchpoints_are_fragile) | |
1632 | { | |
1633 | warning_needed = 1; | |
c906108c | 1634 | delete_breakpoint (b); |
c5aa993b JM |
1635 | } |
1636 | break; | |
1637 | } | |
1638 | } | |
c906108c SS |
1639 | |
1640 | if (exception_catchpoints_are_fragile) | |
1641 | exception_support_initialized = 0; | |
1642 | ||
c5aa993b | 1643 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1644 | if (warning_needed && (context != inf_exited)) |
1645 | { | |
53a5351d JM |
1646 | warning ("Exception catchpoints from last run were deleted."); |
1647 | warning ("You must reinsert them explicitly."); | |
c906108c | 1648 | warning_needed = 0; |
c5aa993b | 1649 | } |
c906108c SS |
1650 | } |
1651 | ||
c2c6d25f JM |
1652 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1653 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1654 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1655 | permanent breakpoint. | |
1656 | - When continuing from a location with an ordinary breakpoint, we | |
1657 | actually single step once before calling insert_breakpoints. | |
1658 | - When continuing from a localion with a permanent breakpoint, we | |
1659 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1660 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1661 | |
c2c6d25f | 1662 | enum breakpoint_here |
fba45db2 | 1663 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1664 | { |
075f6582 | 1665 | struct bp_location *bpt; |
c2c6d25f | 1666 | int any_breakpoint_here = 0; |
c906108c | 1667 | |
075f6582 DJ |
1668 | ALL_BP_LOCATIONS (bpt) |
1669 | { | |
1670 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1671 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1672 | continue; | |
1673 | ||
1674 | if ((bpt->owner->enable_state == bp_enabled | |
1675 | || bpt->owner->enable_state == bp_permanent) | |
1676 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1677 | { | |
1678 | if (overlay_debugging | |
1679 | && section_is_overlay (bpt->section) | |
1680 | && !section_is_mapped (bpt->section)) | |
1681 | continue; /* unmapped overlay -- can't be a match */ | |
1682 | else if (bpt->owner->enable_state == bp_permanent) | |
1683 | return permanent_breakpoint_here; | |
1684 | else | |
1685 | any_breakpoint_here = 1; | |
1686 | } | |
1687 | } | |
c906108c | 1688 | |
c2c6d25f | 1689 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1690 | } |
1691 | ||
c2c6d25f | 1692 | |
53a5351d JM |
1693 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1694 | but it only returns true if there is actually a breakpoint inserted | |
1695 | at PC. */ | |
c906108c SS |
1696 | |
1697 | int | |
fba45db2 | 1698 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1699 | { |
075f6582 | 1700 | struct bp_location *bpt; |
c906108c | 1701 | |
075f6582 | 1702 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1703 | { |
075f6582 DJ |
1704 | if (bpt->loc_type != bp_loc_software_breakpoint |
1705 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1706 | continue; | |
1707 | ||
1708 | if (bpt->inserted | |
1709 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1710 | { | |
1711 | if (overlay_debugging | |
1712 | && section_is_overlay (bpt->section) | |
1713 | && !section_is_mapped (bpt->section)) | |
1714 | continue; /* unmapped overlay -- can't be a match */ | |
1715 | else | |
1716 | return 1; | |
1717 | } | |
c5aa993b | 1718 | } |
c906108c SS |
1719 | |
1720 | return 0; | |
1721 | } | |
1722 | ||
53a5351d | 1723 | /* Return nonzero if FRAME is a dummy frame. We can't use |
ae45cd16 | 1724 | DEPRECATED_PC_IN_CALL_DUMMY because figuring out the saved SP would |
ac2adee5 | 1725 | take too much time, at least using frame_register() on the 68k. |
ae45cd16 | 1726 | This means that for this function to work right a port must use the |
53a5351d | 1727 | bp_call_dummy breakpoint. */ |
c906108c SS |
1728 | |
1729 | int | |
bf1e52be | 1730 | deprecated_frame_in_dummy (struct frame_info *frame) |
c906108c | 1731 | { |
c906108c SS |
1732 | struct breakpoint *b; |
1733 | ||
0225421b | 1734 | /* This function is used by two files: get_frame_type(), after first |
07555a72 AC |
1735 | checking that !DEPRECATED_USE_GENERIC_DUMMY_FRAMES; and |
1736 | sparc-tdep.c, which doesn't yet use generic dummy frames anyway. */ | |
1737 | gdb_assert (!DEPRECATED_USE_GENERIC_DUMMY_FRAMES); | |
c5aa993b | 1738 | |
c906108c | 1739 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1740 | { |
1741 | if (b->type == bp_call_dummy | |
818dd999 | 1742 | && frame_id_eq (b->frame_id, get_frame_id (frame)) |
c5aa993b JM |
1743 | /* We need to check the PC as well as the frame on the sparc, |
1744 | for signals.exp in the testsuite. */ | |
bdd78e62 | 1745 | && (get_frame_pc (frame) |
5cab636d | 1746 | >= (b->loc->address |
b1e29e33 | 1747 | - DEPRECATED_SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * DEPRECATED_REGISTER_SIZE)) |
5cab636d | 1748 | && get_frame_pc (frame) <= b->loc->address) |
c5aa993b JM |
1749 | return 1; |
1750 | } | |
c906108c SS |
1751 | return 0; |
1752 | } | |
1753 | ||
075f6582 DJ |
1754 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1755 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1756 | |
1757 | int | |
39f77062 | 1758 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1759 | { |
075f6582 | 1760 | struct bp_location *bpt; |
c906108c SS |
1761 | int thread; |
1762 | ||
39f77062 | 1763 | thread = pid_to_thread_id (ptid); |
c906108c | 1764 | |
075f6582 | 1765 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1766 | { |
075f6582 DJ |
1767 | if (bpt->loc_type != bp_loc_software_breakpoint |
1768 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1769 | continue; | |
1770 | ||
1771 | if ((bpt->owner->enable_state == bp_enabled | |
1772 | || bpt->owner->enable_state == bp_permanent) | |
1773 | && bpt->address == pc | |
1774 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1775 | { | |
1776 | if (overlay_debugging | |
1777 | && section_is_overlay (bpt->section) | |
1778 | && !section_is_mapped (bpt->section)) | |
1779 | continue; /* unmapped overlay -- can't be a match */ | |
1780 | else | |
1781 | return 1; | |
1782 | } | |
c5aa993b | 1783 | } |
c906108c SS |
1784 | |
1785 | return 0; | |
1786 | } | |
c906108c | 1787 | \f |
c5aa993b | 1788 | |
c906108c SS |
1789 | /* bpstat stuff. External routines' interfaces are documented |
1790 | in breakpoint.h. */ | |
1791 | ||
1792 | int | |
fba45db2 | 1793 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1794 | { |
1795 | return | |
1796 | (ep->type == bp_catch_load) | |
1797 | || (ep->type == bp_catch_unload) | |
1798 | || (ep->type == bp_catch_fork) | |
1799 | || (ep->type == bp_catch_vfork) | |
1800 | || (ep->type == bp_catch_exec) | |
1801 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1802 | || (ep->type == bp_catch_throw); |
c906108c | 1803 | |
c5aa993b | 1804 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1805 | } |
c5aa993b | 1806 | |
c906108c | 1807 | int |
fba45db2 | 1808 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1809 | { |
1810 | return | |
1811 | (ep->type == bp_catch_load) | |
d85310f7 | 1812 | || (ep->type == bp_catch_unload); |
c906108c SS |
1813 | } |
1814 | ||
1815 | int | |
fba45db2 | 1816 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1817 | { |
1818 | return | |
1819 | (ep->type == bp_catch_catch) | |
d85310f7 | 1820 | || (ep->type == bp_catch_throw); |
c906108c SS |
1821 | } |
1822 | ||
1823 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1824 | Also free any storage that is part of a bpstat. */ | |
1825 | ||
1826 | void | |
fba45db2 | 1827 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1828 | { |
1829 | bpstat p; | |
1830 | bpstat q; | |
1831 | ||
1832 | if (bsp == 0) | |
1833 | return; | |
1834 | p = *bsp; | |
1835 | while (p != NULL) | |
1836 | { | |
1837 | q = p->next; | |
1838 | if (p->old_val != NULL) | |
1839 | value_free (p->old_val); | |
c2b8ed2c | 1840 | free_command_lines (&p->commands); |
b8c9b27d | 1841 | xfree (p); |
c906108c SS |
1842 | p = q; |
1843 | } | |
1844 | *bsp = NULL; | |
1845 | } | |
1846 | ||
1847 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1848 | is part of the bpstat is copied as well. */ | |
1849 | ||
1850 | bpstat | |
fba45db2 | 1851 | bpstat_copy (bpstat bs) |
c906108c SS |
1852 | { |
1853 | bpstat p = NULL; | |
1854 | bpstat tmp; | |
1855 | bpstat retval = NULL; | |
1856 | ||
1857 | if (bs == NULL) | |
1858 | return bs; | |
1859 | ||
1860 | for (; bs != NULL; bs = bs->next) | |
1861 | { | |
1862 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1863 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1864 | if (bs->commands != NULL) |
1865 | tmp->commands = copy_command_lines (bs->commands); | |
1866 | if (bs->old_val != NULL) | |
1867 | tmp->old_val = value_copy (bs->old_val); | |
1868 | ||
c906108c SS |
1869 | if (p == NULL) |
1870 | /* This is the first thing in the chain. */ | |
1871 | retval = tmp; | |
1872 | else | |
1873 | p->next = tmp; | |
1874 | p = tmp; | |
1875 | } | |
1876 | p->next = NULL; | |
1877 | return retval; | |
1878 | } | |
1879 | ||
1880 | /* Find the bpstat associated with this breakpoint */ | |
1881 | ||
1882 | bpstat | |
fba45db2 | 1883 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1884 | { |
c5aa993b JM |
1885 | if (bsp == NULL) |
1886 | return NULL; | |
c906108c | 1887 | |
c5aa993b JM |
1888 | for (; bsp != NULL; bsp = bsp->next) |
1889 | { | |
1890 | if (bsp->breakpoint_at == breakpoint) | |
1891 | return bsp; | |
1892 | } | |
c906108c SS |
1893 | return NULL; |
1894 | } | |
1895 | ||
1896 | /* Find a step_resume breakpoint associated with this bpstat. | |
1897 | (If there are multiple step_resume bp's on the list, this function | |
1898 | will arbitrarily pick one.) | |
1899 | ||
1900 | It is an error to use this function if BPSTAT doesn't contain a | |
1901 | step_resume breakpoint. | |
1902 | ||
1903 | See wait_for_inferior's use of this function. */ | |
1904 | struct breakpoint * | |
fba45db2 | 1905 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1906 | { |
8601f500 MS |
1907 | int current_thread; |
1908 | ||
c906108c SS |
1909 | if (bsp == NULL) |
1910 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1911 | ||
8601f500 MS |
1912 | current_thread = pid_to_thread_id (inferior_ptid); |
1913 | ||
c906108c SS |
1914 | for (; bsp != NULL; bsp = bsp->next) |
1915 | { | |
1916 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1917 | (bsp->breakpoint_at->type == bp_step_resume) && |
1918 | (bsp->breakpoint_at->thread == current_thread || | |
1919 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1920 | return bsp->breakpoint_at; |
c906108c SS |
1921 | } |
1922 | ||
1923 | error ("Internal error (no step_resume breakpoint found)"); | |
1924 | } | |
1925 | ||
1926 | ||
1927 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1928 | at. *BSP upon return is a bpstat which points to the remaining | |
1929 | breakpoints stopped at (but which is not guaranteed to be good for | |
1930 | anything but further calls to bpstat_num). | |
1931 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1932 | ||
1933 | int | |
fba45db2 | 1934 | bpstat_num (bpstat *bsp) |
c906108c SS |
1935 | { |
1936 | struct breakpoint *b; | |
1937 | ||
1938 | if ((*bsp) == NULL) | |
1939 | return 0; /* No more breakpoint values */ | |
1940 | else | |
1941 | { | |
1942 | b = (*bsp)->breakpoint_at; | |
1943 | *bsp = (*bsp)->next; | |
1944 | if (b == NULL) | |
1945 | return -1; /* breakpoint that's been deleted since */ | |
1946 | else | |
c5aa993b | 1947 | return b->number; /* We have its number */ |
c906108c SS |
1948 | } |
1949 | } | |
1950 | ||
1951 | /* Modify BS so that the actions will not be performed. */ | |
1952 | ||
1953 | void | |
fba45db2 | 1954 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1955 | { |
1956 | for (; bs != NULL; bs = bs->next) | |
1957 | { | |
c2b8ed2c | 1958 | free_command_lines (&bs->commands); |
c906108c SS |
1959 | if (bs->old_val != NULL) |
1960 | { | |
1961 | value_free (bs->old_val); | |
1962 | bs->old_val = NULL; | |
1963 | } | |
1964 | } | |
1965 | } | |
1966 | ||
1967 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1968 | static void |
4efb68b1 | 1969 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1970 | { |
1971 | executing_breakpoint_commands = 0; | |
1972 | } | |
1973 | ||
1974 | /* Execute all the commands associated with all the breakpoints at this | |
1975 | location. Any of these commands could cause the process to proceed | |
1976 | beyond this point, etc. We look out for such changes by checking | |
1977 | the global "breakpoint_proceeded" after each command. */ | |
1978 | ||
1979 | void | |
fba45db2 | 1980 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1981 | { |
1982 | bpstat bs; | |
1983 | struct cleanup *old_chain; | |
1984 | struct command_line *cmd; | |
1985 | ||
1986 | /* Avoid endless recursion if a `source' command is contained | |
1987 | in bs->commands. */ | |
1988 | if (executing_breakpoint_commands) | |
1989 | return; | |
1990 | ||
1991 | executing_breakpoint_commands = 1; | |
1992 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1993 | ||
1994 | top: | |
1995 | /* Note that (as of this writing), our callers all appear to | |
1996 | be passing us the address of global stop_bpstat. And, if | |
1997 | our calls to execute_control_command cause the inferior to | |
1998 | proceed, that global (and hence, *bsp) will change. | |
1999 | ||
2000 | We must be careful to not touch *bsp unless the inferior | |
2001 | has not proceeded. */ | |
2002 | ||
2003 | /* This pointer will iterate over the list of bpstat's. */ | |
2004 | bs = *bsp; | |
2005 | ||
2006 | breakpoint_proceeded = 0; | |
2007 | for (; bs != NULL; bs = bs->next) | |
2008 | { | |
2009 | cmd = bs->commands; | |
2010 | while (cmd != NULL) | |
2011 | { | |
2012 | execute_control_command (cmd); | |
2013 | ||
2014 | if (breakpoint_proceeded) | |
2015 | break; | |
2016 | else | |
2017 | cmd = cmd->next; | |
2018 | } | |
2019 | if (breakpoint_proceeded) | |
2020 | /* The inferior is proceeded by the command; bomb out now. | |
2021 | The bpstat chain has been blown away by wait_for_inferior. | |
2022 | But since execution has stopped again, there is a new bpstat | |
2023 | to look at, so start over. */ | |
2024 | goto top; | |
2025 | else | |
c2b8ed2c | 2026 | free_command_lines (&bs->commands); |
c906108c | 2027 | } |
c2b8ed2c | 2028 | do_cleanups (old_chain); |
c906108c SS |
2029 | } |
2030 | ||
e514a9d6 | 2031 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2032 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2033 | by having it set different print_it values. |
2034 | ||
2035 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2036 | through the bpstat list of things causing this stop, calling the | |
2037 | print_bp_stop_message function on each one. The behavior of the | |
2038 | print_bp_stop_message function depends on the print_it field of | |
2039 | bpstat. If such field so indicates, call this function here. | |
2040 | ||
2041 | Return values from this routine (ultimately used by bpstat_print() | |
2042 | and normal_stop() to decide what to do): | |
2043 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2044 | don't print anything else. | |
2045 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2046 | that something to be followed by a location. | |
2047 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2048 | that something to be followed by a location. | |
2049 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2050 | analysis. */ | |
c906108c | 2051 | |
917317f4 | 2052 | static enum print_stop_action |
fba45db2 | 2053 | print_it_typical (bpstat bs) |
c906108c | 2054 | { |
3b31d625 | 2055 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2056 | struct ui_stream *stb; |
2057 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2058 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2059 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2060 | which has since been deleted. */ | |
e514a9d6 | 2061 | if (bs->breakpoint_at == NULL) |
917317f4 | 2062 | return PRINT_UNKNOWN; |
c906108c | 2063 | |
e514a9d6 | 2064 | switch (bs->breakpoint_at->type) |
c906108c | 2065 | { |
e514a9d6 JM |
2066 | case bp_breakpoint: |
2067 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2068 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2069 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2070 | bs->breakpoint_at->loc->address, | |
76897487 | 2071 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2072 | annotate_breakpoint (bs->breakpoint_at->number); |
2073 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2074 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2075 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2076 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2077 | ui_out_text (uiout, ", "); | |
2078 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2079 | break; |
2080 | ||
2081 | case bp_shlib_event: | |
917317f4 JM |
2082 | /* Did we stop because the user set the stop_on_solib_events |
2083 | variable? (If so, we report this as a generic, "Stopped due | |
2084 | to shlib event" message.) */ | |
e514a9d6 JM |
2085 | printf_filtered ("Stopped due to shared library event\n"); |
2086 | return PRINT_NOTHING; | |
2087 | break; | |
2088 | ||
c4093a6a JM |
2089 | case bp_thread_event: |
2090 | /* Not sure how we will get here. | |
2091 | GDB should not stop for these breakpoints. */ | |
2092 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2093 | return PRINT_NOTHING; | |
2094 | break; | |
2095 | ||
1900040c MS |
2096 | case bp_overlay_event: |
2097 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2098 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2099 | return PRINT_NOTHING; | |
2100 | break; | |
2101 | ||
e514a9d6 | 2102 | case bp_catch_load: |
c906108c SS |
2103 | annotate_catchpoint (bs->breakpoint_at->number); |
2104 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2105 | printf_filtered ("loaded"); |
2106 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2107 | return PRINT_SRC_AND_LOC; | |
2108 | break; | |
2109 | ||
2110 | case bp_catch_unload: | |
2111 | annotate_catchpoint (bs->breakpoint_at->number); | |
2112 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2113 | printf_filtered ("unloaded"); | |
2114 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2115 | return PRINT_SRC_AND_LOC; | |
2116 | break; | |
2117 | ||
2118 | case bp_catch_fork: | |
2119 | annotate_catchpoint (bs->breakpoint_at->number); | |
2120 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2121 | printf_filtered ("forked"); | |
53a5351d JM |
2122 | printf_filtered (" process %d), ", |
2123 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2124 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2125 | break; |
2126 | ||
2127 | case bp_catch_vfork: | |
2128 | annotate_catchpoint (bs->breakpoint_at->number); | |
2129 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2130 | printf_filtered ("vforked"); | |
2131 | printf_filtered (" process %d), ", | |
2132 | bs->breakpoint_at->forked_inferior_pid); | |
2133 | return PRINT_SRC_AND_LOC; | |
2134 | break; | |
2135 | ||
2136 | case bp_catch_exec: | |
c906108c SS |
2137 | annotate_catchpoint (bs->breakpoint_at->number); |
2138 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2139 | bs->breakpoint_at->number, |
2140 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2141 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2142 | break; |
2143 | ||
2144 | case bp_catch_catch: | |
53a5351d JM |
2145 | if (current_exception_event && |
2146 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2147 | { |
2148 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2149 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2150 | bs->breakpoint_at->number); | |
c5aa993b JM |
2151 | printf_filtered ("throw location "); |
2152 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2153 | printf_filtered ("%s:%d", | |
2154 | CURRENT_EXCEPTION_THROW_FILE, | |
2155 | CURRENT_EXCEPTION_THROW_LINE); | |
2156 | else | |
2157 | printf_filtered ("unknown"); | |
2158 | ||
2159 | printf_filtered (", catch location "); | |
2160 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2161 | printf_filtered ("%s:%d", | |
2162 | CURRENT_EXCEPTION_CATCH_FILE, | |
2163 | CURRENT_EXCEPTION_CATCH_LINE); | |
2164 | else | |
2165 | printf_filtered ("unknown"); | |
2166 | ||
2167 | printf_filtered ("\n"); | |
e514a9d6 JM |
2168 | /* don't bother to print location frame info */ |
2169 | return PRINT_SRC_ONLY; | |
c5aa993b | 2170 | } |
c906108c | 2171 | else |
c5aa993b | 2172 | { |
e514a9d6 JM |
2173 | /* really throw, some other bpstat will handle it */ |
2174 | return PRINT_UNKNOWN; | |
c5aa993b | 2175 | } |
e514a9d6 JM |
2176 | break; |
2177 | ||
2178 | case bp_catch_throw: | |
53a5351d JM |
2179 | if (current_exception_event && |
2180 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2181 | { |
2182 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2183 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2184 | bs->breakpoint_at->number); | |
c5aa993b JM |
2185 | printf_filtered ("throw location "); |
2186 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2187 | printf_filtered ("%s:%d", | |
2188 | CURRENT_EXCEPTION_THROW_FILE, | |
2189 | CURRENT_EXCEPTION_THROW_LINE); | |
2190 | else | |
2191 | printf_filtered ("unknown"); | |
2192 | ||
2193 | printf_filtered (", catch location "); | |
2194 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2195 | printf_filtered ("%s:%d", | |
2196 | CURRENT_EXCEPTION_CATCH_FILE, | |
2197 | CURRENT_EXCEPTION_CATCH_LINE); | |
2198 | else | |
2199 | printf_filtered ("unknown"); | |
2200 | ||
2201 | printf_filtered ("\n"); | |
e514a9d6 JM |
2202 | /* don't bother to print location frame info */ |
2203 | return PRINT_SRC_ONLY; | |
c5aa993b | 2204 | } |
c906108c | 2205 | else |
c5aa993b | 2206 | { |
e514a9d6 JM |
2207 | /* really catch, some other bpstat will handle it */ |
2208 | return PRINT_UNKNOWN; | |
c5aa993b | 2209 | } |
e514a9d6 | 2210 | break; |
c906108c | 2211 | |
e514a9d6 JM |
2212 | case bp_watchpoint: |
2213 | case bp_hardware_watchpoint: | |
2214 | if (bs->old_val != NULL) | |
2215 | { | |
2216 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2217 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2218 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2219 | mention (bs->breakpoint_at); |
3b31d625 | 2220 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2221 | ui_out_text (uiout, "\nOld value = "); |
2222 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2223 | ui_out_field_stream (uiout, "old", stb); | |
2224 | ui_out_text (uiout, "\nNew value = "); | |
2225 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2226 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2227 | do_cleanups (ui_out_chain); |
8b93c638 | 2228 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2229 | value_free (bs->old_val); |
2230 | bs->old_val = NULL; | |
2231 | } | |
2232 | /* More than one watchpoint may have been triggered. */ | |
2233 | return PRINT_UNKNOWN; | |
2234 | break; | |
2235 | ||
2236 | case bp_read_watchpoint: | |
9dc5e2a9 | 2237 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2238 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2239 | mention (bs->breakpoint_at); |
3b31d625 | 2240 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2241 | ui_out_text (uiout, "\nValue = "); |
2242 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2243 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2244 | do_cleanups (ui_out_chain); |
8b93c638 | 2245 | ui_out_text (uiout, "\n"); |
917317f4 | 2246 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2247 | break; |
2248 | ||
2249 | case bp_access_watchpoint: | |
8b93c638 JM |
2250 | if (bs->old_val != NULL) |
2251 | { | |
2252 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2253 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2254 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2255 | mention (bs->breakpoint_at); |
3b31d625 | 2256 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2257 | ui_out_text (uiout, "\nOld value = "); |
2258 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2259 | ui_out_field_stream (uiout, "old", stb); | |
2260 | value_free (bs->old_val); | |
2261 | bs->old_val = NULL; | |
2262 | ui_out_text (uiout, "\nNew value = "); | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2267 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2268 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2269 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2270 | ui_out_text (uiout, "\nValue = "); |
2271 | } | |
2272 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2273 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2274 | do_cleanups (ui_out_chain); |
8b93c638 | 2275 | ui_out_text (uiout, "\n"); |
917317f4 | 2276 | return PRINT_UNKNOWN; |
e514a9d6 | 2277 | break; |
4ce44c66 | 2278 | |
e514a9d6 JM |
2279 | /* Fall through, we don't deal with these types of breakpoints |
2280 | here. */ | |
2281 | ||
11cf8741 | 2282 | case bp_finish: |
9dc5e2a9 | 2283 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2284 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2285 | return PRINT_UNKNOWN; |
2286 | break; | |
2287 | ||
e514a9d6 | 2288 | case bp_until: |
9dc5e2a9 | 2289 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2290 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2291 | return PRINT_UNKNOWN; |
2292 | break; | |
2293 | ||
c2d11a7d | 2294 | case bp_none: |
e514a9d6 JM |
2295 | case bp_longjmp: |
2296 | case bp_longjmp_resume: | |
2297 | case bp_step_resume: | |
2298 | case bp_through_sigtramp: | |
2299 | case bp_watchpoint_scope: | |
2300 | case bp_call_dummy: | |
2301 | default: | |
2302 | return PRINT_UNKNOWN; | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | /* Generic routine for printing messages indicating why we | |
2307 | stopped. The behavior of this function depends on the value | |
2308 | 'print_it' in the bpstat structure. Under some circumstances we | |
2309 | may decide not to print anything here and delegate the task to | |
2310 | normal_stop(). */ | |
2311 | ||
2312 | static enum print_stop_action | |
2313 | print_bp_stop_message (bpstat bs) | |
2314 | { | |
2315 | switch (bs->print_it) | |
2316 | { | |
2317 | case print_it_noop: | |
2318 | /* Nothing should be printed for this bpstat entry. */ | |
2319 | return PRINT_UNKNOWN; | |
2320 | break; | |
2321 | ||
2322 | case print_it_done: | |
2323 | /* We still want to print the frame, but we already printed the | |
2324 | relevant messages. */ | |
2325 | return PRINT_SRC_AND_LOC; | |
2326 | break; | |
2327 | ||
2328 | case print_it_normal: | |
3086aeae DJ |
2329 | /* Normal case. Call the breakpoint's print_it method, or |
2330 | print_it_typical. */ | |
2331 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2332 | && bs->breakpoint_at->ops->print_it != NULL) | |
2333 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2334 | else | |
2335 | return print_it_typical (bs); | |
e514a9d6 | 2336 | break; |
3086aeae | 2337 | |
e514a9d6 | 2338 | default: |
8e65ff28 AC |
2339 | internal_error (__FILE__, __LINE__, |
2340 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2341 | break; |
c906108c | 2342 | } |
c906108c SS |
2343 | } |
2344 | ||
e514a9d6 JM |
2345 | /* Print a message indicating what happened. This is called from |
2346 | normal_stop(). The input to this routine is the head of the bpstat | |
2347 | list - a list of the eventpoints that caused this stop. This | |
2348 | routine calls the generic print routine for printing a message | |
2349 | about reasons for stopping. This will print (for example) the | |
2350 | "Breakpoint n," part of the output. The return value of this | |
2351 | routine is one of: | |
c906108c | 2352 | |
917317f4 JM |
2353 | PRINT_UNKNOWN: Means we printed nothing |
2354 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2355 | code to print the location. An example is |
2356 | "Breakpoint 1, " which should be followed by | |
2357 | the location. | |
917317f4 | 2358 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2359 | to also print the location part of the message. |
2360 | An example is the catch/throw messages, which | |
917317f4 JM |
2361 | don't require a location appended to the end. |
2362 | PRINT_NOTHING: We have done some printing and we don't need any | |
2363 | further info to be printed.*/ | |
c906108c | 2364 | |
917317f4 | 2365 | enum print_stop_action |
fba45db2 | 2366 | bpstat_print (bpstat bs) |
c906108c SS |
2367 | { |
2368 | int val; | |
c5aa993b | 2369 | |
c906108c | 2370 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2371 | (Currently all watchpoints go on the bpstat whether hit or not. |
2372 | That probably could (should) be changed, provided care is taken | |
c906108c | 2373 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2374 | for (; bs; bs = bs->next) |
2375 | { | |
2376 | val = print_bp_stop_message (bs); | |
2377 | if (val == PRINT_SRC_ONLY | |
2378 | || val == PRINT_SRC_AND_LOC | |
2379 | || val == PRINT_NOTHING) | |
2380 | return val; | |
2381 | } | |
c906108c | 2382 | |
e514a9d6 JM |
2383 | /* We reached the end of the chain, or we got a null BS to start |
2384 | with and nothing was printed. */ | |
917317f4 | 2385 | return PRINT_UNKNOWN; |
c906108c SS |
2386 | } |
2387 | ||
2388 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2389 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2390 | The argument is a "struct expression *" that has been cast to char * to | |
2391 | make it pass through catch_errors. */ | |
2392 | ||
2393 | static int | |
4efb68b1 | 2394 | breakpoint_cond_eval (void *exp) |
c906108c | 2395 | { |
278cd55f | 2396 | struct value *mark = value_mark (); |
c5aa993b | 2397 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2398 | value_free_to_mark (mark); |
2399 | return i; | |
2400 | } | |
2401 | ||
2402 | /* Allocate a new bpstat and chain it to the current one. */ | |
2403 | ||
2404 | static bpstat | |
831662b3 | 2405 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2406 | { |
2407 | bpstat bs; | |
2408 | ||
2409 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2410 | cbs->next = bs; | |
2411 | bs->breakpoint_at = b; | |
2412 | /* If the condition is false, etc., don't do the commands. */ | |
2413 | bs->commands = NULL; | |
2414 | bs->old_val = NULL; | |
2415 | bs->print_it = print_it_normal; | |
2416 | return bs; | |
2417 | } | |
2418 | \f | |
2419 | /* Possible return values for watchpoint_check (this can't be an enum | |
2420 | because of check_errors). */ | |
2421 | /* The watchpoint has been deleted. */ | |
2422 | #define WP_DELETED 1 | |
2423 | /* The value has changed. */ | |
2424 | #define WP_VALUE_CHANGED 2 | |
2425 | /* The value has not changed. */ | |
2426 | #define WP_VALUE_NOT_CHANGED 3 | |
2427 | ||
2428 | #define BP_TEMPFLAG 1 | |
2429 | #define BP_HARDWAREFLAG 2 | |
2430 | ||
2431 | /* Check watchpoint condition. */ | |
2432 | ||
2433 | static int | |
4efb68b1 | 2434 | watchpoint_check (void *p) |
c906108c SS |
2435 | { |
2436 | bpstat bs = (bpstat) p; | |
2437 | struct breakpoint *b; | |
2438 | struct frame_info *fr; | |
2439 | int within_current_scope; | |
a6fbcf2f CV |
2440 | #if 0 |
2441 | struct frame_id current_frame_id; | |
2442 | #endif | |
c906108c SS |
2443 | |
2444 | b = bs->breakpoint_at; | |
2445 | ||
2446 | if (b->exp_valid_block == NULL) | |
2447 | within_current_scope = 1; | |
2448 | else | |
2449 | { | |
2450 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2451 | any chance of handling watchpoints on local variables, we'll need |
2452 | the frame chain (so we can determine if we're in scope). */ | |
2453 | reinit_frame_cache (); | |
101dcfbe | 2454 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2455 | within_current_scope = (fr != NULL); |
c12260ac CV |
2456 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2457 | in the function but the stack frame has already been invalidated. | |
2458 | Since we can't rely on the values of local variables after the | |
2459 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2460 | state as `not changed' without further checking. |
2461 | ||
2462 | vinschen/2003-09-04: The former implementation left out the case | |
2463 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2464 | because the current PC is currently in an epilogue. Calling | |
2465 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2466 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2467 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2468 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2469 | if (fr && within_current_scope) |
c906108c SS |
2470 | /* If we end up stopping, the current frame will get selected |
2471 | in normal_stop. So this call to select_frame won't affect | |
2472 | the user. */ | |
0f7d239c | 2473 | select_frame (fr); |
c906108c | 2474 | } |
c5aa993b | 2475 | |
c906108c SS |
2476 | if (within_current_scope) |
2477 | { | |
2478 | /* We use value_{,free_to_}mark because it could be a | |
2479 | *long* time before we return to the command level and | |
c5aa993b JM |
2480 | call free_all_values. We can't call free_all_values because |
2481 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2482 | |
278cd55f AC |
2483 | struct value *mark = value_mark (); |
2484 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2485 | if (!value_equal (b->val, new_val)) |
2486 | { | |
2487 | release_value (new_val); | |
2488 | value_free_to_mark (mark); | |
2489 | bs->old_val = b->val; | |
2490 | b->val = new_val; | |
2491 | /* We will stop here */ | |
2492 | return WP_VALUE_CHANGED; | |
2493 | } | |
2494 | else | |
2495 | { | |
2496 | /* Nothing changed, don't do anything. */ | |
2497 | value_free_to_mark (mark); | |
2498 | /* We won't stop here */ | |
2499 | return WP_VALUE_NOT_CHANGED; | |
2500 | } | |
2501 | } | |
2502 | else | |
2503 | { | |
2504 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2505 | if we temporarily ignored the watchpoint, then when |
2506 | we reenter the block in which it is valid it contains | |
2507 | garbage (in the case of a function, it may have two | |
2508 | garbage values, one before and one after the prologue). | |
2509 | So we can't even detect the first assignment to it and | |
2510 | watch after that (since the garbage may or may not equal | |
2511 | the first value assigned). */ | |
4ce44c66 JM |
2512 | /* We print all the stop information in print_it_typical(), but |
2513 | in this case, by the time we call print_it_typical() this bp | |
2514 | will be deleted already. So we have no choice but print the | |
2515 | information here. */ | |
9dc5e2a9 | 2516 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2517 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2518 | ui_out_text (uiout, "\nWatchpoint "); |
2519 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2520 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2521 | which its expression is valid.\n"); | |
4ce44c66 | 2522 | |
c906108c | 2523 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2524 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2525 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2526 | |
2527 | return WP_DELETED; | |
2528 | } | |
2529 | } | |
2530 | ||
c906108c SS |
2531 | /* Get a bpstat associated with having just stopped at address *PC |
2532 | and frame address CORE_ADDRESS. Update *PC to point at the | |
6e31adb3 | 2533 | breakpoint (if we hit a breakpoint). NOT_A_SW_BREAKPOINT is nonzero |
c906108c SS |
2534 | if this is known to not be a real breakpoint (it could still be a |
2535 | watchpoint, though). */ | |
2536 | ||
2537 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2538 | don't understand this stop. Result is a chain of bpstat's such that: | |
2539 | ||
c5aa993b | 2540 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2541 | |
c5aa993b | 2542 | if we understand why we stopped, the result is not null. |
c906108c | 2543 | |
c5aa993b JM |
2544 | Each element of the chain refers to a particular breakpoint or |
2545 | watchpoint at which we have stopped. (We may have stopped for | |
2546 | several reasons concurrently.) | |
c906108c | 2547 | |
c5aa993b JM |
2548 | Each element of the chain has valid next, breakpoint_at, |
2549 | commands, FIXME??? fields. */ | |
c906108c SS |
2550 | |
2551 | bpstat | |
6e31adb3 | 2552 | bpstat_stop_status (CORE_ADDR *pc, int not_a_sw_breakpoint) |
c906108c | 2553 | { |
52f0bd74 | 2554 | struct breakpoint *b, *temp; |
c906108c SS |
2555 | CORE_ADDR bp_addr; |
2556 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2557 | int real_breakpoint = 0; | |
2558 | /* Root of the chain of bpstat's */ | |
2559 | struct bpstats root_bs[1]; | |
2560 | /* Pointer to the last thing in the chain currently. */ | |
2561 | bpstat bs = root_bs; | |
c906108c | 2562 | |
6e31adb3 AC |
2563 | /* Get the address where the breakpoint would have been. The |
2564 | "not_a_sw_breakpoint" argument is meant to distinguish between a | |
2565 | breakpoint trap event and a trace/singlestep trap event. For a | |
2566 | trace/singlestep trap event, we would not want to subtract | |
2567 | DECR_PC_AFTER_BREAK from the PC. */ | |
80b34fab | 2568 | |
c8edd8b4 | 2569 | bp_addr = *pc - (not_a_sw_breakpoint ? 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2570 | |
2571 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2572 | { |
b5de0fa7 EZ |
2573 | if (b->enable_state == bp_disabled |
2574 | || b->enable_state == bp_shlib_disabled | |
2575 | || b->enable_state == bp_call_disabled) | |
c5aa993b JM |
2576 | continue; |
2577 | ||
2578 | if (b->type != bp_watchpoint | |
2579 | && b->type != bp_hardware_watchpoint | |
2580 | && b->type != bp_read_watchpoint | |
2581 | && b->type != bp_access_watchpoint | |
2582 | && b->type != bp_hardware_breakpoint | |
2583 | && b->type != bp_catch_fork | |
2584 | && b->type != bp_catch_vfork | |
2585 | && b->type != bp_catch_exec | |
2586 | && b->type != bp_catch_catch | |
2587 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2588 | { |
5cab636d | 2589 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2590 | continue; |
2591 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2592 | && section_is_overlay (b->loc->section) |
2593 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2594 | continue; |
2595 | } | |
c906108c | 2596 | |
c02f5703 MS |
2597 | if (b->type == bp_hardware_breakpoint) |
2598 | { | |
5cab636d | 2599 | if (b->loc->address != (*pc - DECR_PC_AFTER_HW_BREAK)) |
c02f5703 MS |
2600 | continue; |
2601 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2602 | && section_is_overlay (b->loc->section) |
2603 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2604 | continue; |
2605 | } | |
c5aa993b | 2606 | |
c5aa993b JM |
2607 | /* Is this a catchpoint of a load or unload? If so, did we |
2608 | get a load or unload of the specified library? If not, | |
2609 | ignore it. */ | |
2610 | if ((b->type == bp_catch_load) | |
c906108c | 2611 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2612 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2613 | || ((b->dll_pathname != NULL) |
53a5351d | 2614 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2615 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2616 | PIDGET (inferior_ptid))) | |
53a5351d | 2617 | != 0))) |
c906108c | 2618 | #endif |
c5aa993b JM |
2619 | ) |
2620 | continue; | |
2621 | ||
2622 | if ((b->type == bp_catch_unload) | |
c906108c | 2623 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2624 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2625 | || ((b->dll_pathname != NULL) |
53a5351d | 2626 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2627 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2628 | PIDGET (inferior_ptid))) | |
53a5351d | 2629 | != 0))) |
c906108c | 2630 | #endif |
c5aa993b JM |
2631 | ) |
2632 | continue; | |
c906108c | 2633 | |
c5aa993b | 2634 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2635 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2636 | &b->forked_inferior_pid)) | |
c5aa993b | 2637 | continue; |
c906108c | 2638 | |
c5aa993b | 2639 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2640 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2641 | &b->forked_inferior_pid)) | |
c5aa993b | 2642 | continue; |
c906108c | 2643 | |
c5aa993b | 2644 | if ((b->type == bp_catch_exec) |
47932f85 | 2645 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2646 | continue; |
c906108c | 2647 | |
c5aa993b JM |
2648 | if (ep_is_exception_catchpoint (b) && |
2649 | !(current_exception_event = target_get_current_exception_event ())) | |
2650 | continue; | |
c906108c | 2651 | |
c5aa993b JM |
2652 | /* Come here if it's a watchpoint, or if the break address matches */ |
2653 | ||
2654 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2655 | ||
2656 | /* Watchpoints may change this, if not found to have triggered. */ | |
2657 | bs->stop = 1; | |
2658 | bs->print = 1; | |
2659 | ||
53a5351d JM |
2660 | if (b->type == bp_watchpoint || |
2661 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2662 | { |
9ebf4acf AC |
2663 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2664 | b->number); | |
2665 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2666 | int e = catch_errors (watchpoint_check, bs, message, | |
2667 | RETURN_MASK_ALL); | |
2668 | do_cleanups (cleanups); | |
2669 | switch (e) | |
c5aa993b JM |
2670 | { |
2671 | case WP_DELETED: | |
2672 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2673 | /* Actually this is superfluous, because by the time we |
2674 | call print_it_typical() the wp will be already deleted, | |
2675 | and the function will return immediately. */ | |
c5aa993b JM |
2676 | bs->print_it = print_it_done; |
2677 | /* Stop. */ | |
2678 | break; | |
2679 | case WP_VALUE_CHANGED: | |
2680 | /* Stop. */ | |
2681 | ++(b->hit_count); | |
2682 | break; | |
2683 | case WP_VALUE_NOT_CHANGED: | |
2684 | /* Don't stop. */ | |
2685 | bs->print_it = print_it_noop; | |
2686 | bs->stop = 0; | |
c5aa993b JM |
2687 | continue; |
2688 | default: | |
2689 | /* Can't happen. */ | |
2690 | /* FALLTHROUGH */ | |
2691 | case 0: | |
2692 | /* Error from catch_errors. */ | |
2693 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2694 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2695 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2696 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2697 | /* We've already printed what needs to be printed. */ |
2698 | bs->print_it = print_it_done; | |
2699 | ||
2700 | /* Stop. */ | |
2701 | break; | |
2702 | } | |
2703 | } | |
53a5351d JM |
2704 | else if (b->type == bp_read_watchpoint || |
2705 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2706 | { |
2707 | CORE_ADDR addr; | |
278cd55f | 2708 | struct value *v; |
c5aa993b JM |
2709 | int found = 0; |
2710 | ||
2711 | addr = target_stopped_data_address (); | |
2712 | if (addr == 0) | |
2713 | continue; | |
2714 | for (v = b->val_chain; v; v = v->next) | |
2715 | { | |
5c44784c JM |
2716 | if (VALUE_LVAL (v) == lval_memory |
2717 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2718 | { |
2e70b7b9 MS |
2719 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2720 | ||
2721 | if (v == b->val_chain | |
2722 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2723 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2724 | { | |
2725 | CORE_ADDR vaddr; | |
2726 | ||
2727 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2728 | /* Exact match not required. Within range is | |
2729 | sufficient. */ | |
2730 | if (addr >= vaddr && | |
2731 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2732 | found = 1; | |
2733 | } | |
c5aa993b JM |
2734 | } |
2735 | } | |
2736 | if (found) | |
9ebf4acf AC |
2737 | { |
2738 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2739 | b->number); | |
2740 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2741 | int e = catch_errors (watchpoint_check, bs, message, | |
2742 | RETURN_MASK_ALL); | |
2743 | do_cleanups (cleanups); | |
2744 | switch (e) | |
2745 | { | |
2746 | case WP_DELETED: | |
2747 | /* We've already printed what needs to be printed. */ | |
2748 | bs->print_it = print_it_done; | |
2749 | /* Stop. */ | |
2750 | break; | |
2751 | case WP_VALUE_CHANGED: | |
2752 | if (b->type == bp_read_watchpoint) | |
2753 | { | |
2754 | /* Don't stop: read watchpoints shouldn't fire if | |
2755 | the value has changed. This is for targets | |
2756 | which cannot set read-only watchpoints. */ | |
2757 | bs->print_it = print_it_noop; | |
2758 | bs->stop = 0; | |
2759 | continue; | |
2760 | } | |
2761 | ++(b->hit_count); | |
2762 | break; | |
2763 | case WP_VALUE_NOT_CHANGED: | |
2764 | /* Stop. */ | |
2765 | ++(b->hit_count); | |
2766 | break; | |
2767 | default: | |
2768 | /* Can't happen. */ | |
2769 | case 0: | |
2770 | /* Error from catch_errors. */ | |
2771 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2772 | if (b->related_breakpoint) | |
2773 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2774 | b->disposition = disp_del_at_next_stop; | |
2775 | /* We've already printed what needs to be printed. */ | |
2776 | bs->print_it = print_it_done; | |
2777 | break; | |
2778 | } | |
2779 | } | |
53a5351d JM |
2780 | else /* found == 0 */ |
2781 | { | |
2782 | /* This is a case where some watchpoint(s) triggered, | |
2783 | but not at the address of this watchpoint (FOUND | |
2784 | was left zero). So don't print anything for this | |
2785 | watchpoint. */ | |
2786 | bs->print_it = print_it_noop; | |
2787 | bs->stop = 0; | |
2788 | continue; | |
2789 | } | |
c5aa993b JM |
2790 | } |
2791 | else | |
2792 | { | |
2793 | /* By definition, an encountered breakpoint is a triggered | |
2794 | breakpoint. */ | |
2795 | ++(b->hit_count); | |
c906108c | 2796 | |
c5aa993b JM |
2797 | real_breakpoint = 1; |
2798 | } | |
2799 | ||
818dd999 AC |
2800 | if (frame_id_p (b->frame_id) |
2801 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2802 | bs->stop = 0; |
2803 | else | |
2804 | { | |
2805 | int value_is_zero = 0; | |
2806 | ||
2807 | if (b->cond) | |
2808 | { | |
2809 | /* Need to select the frame, with all that implies | |
2810 | so that the conditions will have the right context. */ | |
0f7d239c | 2811 | select_frame (get_current_frame ()); |
c5aa993b JM |
2812 | value_is_zero |
2813 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2814 | "Error in testing breakpoint condition:\n", | |
2815 | RETURN_MASK_ALL); | |
2816 | /* FIXME-someday, should give breakpoint # */ | |
2817 | free_all_values (); | |
2818 | } | |
2819 | if (b->cond && value_is_zero) | |
2820 | { | |
2821 | bs->stop = 0; | |
2822 | /* Don't consider this a hit. */ | |
2823 | --(b->hit_count); | |
2824 | } | |
2825 | else if (b->ignore_count > 0) | |
2826 | { | |
2827 | b->ignore_count--; | |
5c44784c | 2828 | annotate_ignore_count_change (); |
c5aa993b JM |
2829 | bs->stop = 0; |
2830 | } | |
2831 | else | |
2832 | { | |
2833 | /* We will stop here */ | |
b5de0fa7 EZ |
2834 | if (b->disposition == disp_disable) |
2835 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2836 | if (b->silent) |
2837 | bs->print = 0; | |
552f4abf | 2838 | bs->commands = b->commands; |
c5aa993b JM |
2839 | if (bs->commands && |
2840 | (STREQ ("silent", bs->commands->line) || | |
2841 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2842 | { | |
2843 | bs->commands = bs->commands->next; | |
c906108c | 2844 | bs->print = 0; |
c5aa993b | 2845 | } |
552f4abf | 2846 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2847 | } |
2848 | } | |
2849 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2850 | if (bs->stop == 0 || bs->print == 0) | |
2851 | bs->print_it = print_it_noop; | |
2852 | } | |
c906108c SS |
2853 | |
2854 | bs->next = NULL; /* Terminate the chain */ | |
2855 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2856 | ||
2857 | if (real_breakpoint && bs) | |
2858 | { | |
c5aa993b | 2859 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2860 | { |
c5aa993b | 2861 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2862 | { |
2863 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2864 | write_pc (*pc); | |
2865 | } | |
2866 | } | |
2867 | else | |
2868 | { | |
2869 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2870 | { | |
2871 | *pc = bp_addr; | |
2872 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2873 | SHIFT_INST_REGS (); |
c906108c SS |
2874 | #else /* No SHIFT_INST_REGS. */ |
2875 | write_pc (bp_addr); | |
2876 | #endif /* No SHIFT_INST_REGS. */ | |
2877 | } | |
2878 | } | |
2879 | } | |
2880 | ||
2881 | /* The value of a hardware watchpoint hasn't changed, but the | |
2882 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2883 | if (bs && !bs->stop && |
c906108c SS |
2884 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2885 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2886 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2887 | { | |
2888 | remove_breakpoints (); | |
2889 | insert_breakpoints (); | |
2890 | } | |
2891 | return bs; | |
2892 | } | |
2893 | \f | |
2894 | /* Tell what to do about this bpstat. */ | |
2895 | struct bpstat_what | |
fba45db2 | 2896 | bpstat_what (bpstat bs) |
c906108c SS |
2897 | { |
2898 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2899 | enum class |
2900 | { | |
2901 | /* This bpstat element has no effect on the main_action. */ | |
2902 | no_effect = 0, | |
2903 | ||
2904 | /* There was a watchpoint, stop but don't print. */ | |
2905 | wp_silent, | |
c906108c | 2906 | |
c5aa993b JM |
2907 | /* There was a watchpoint, stop and print. */ |
2908 | wp_noisy, | |
c906108c | 2909 | |
c5aa993b JM |
2910 | /* There was a breakpoint but we're not stopping. */ |
2911 | bp_nostop, | |
c906108c | 2912 | |
c5aa993b JM |
2913 | /* There was a breakpoint, stop but don't print. */ |
2914 | bp_silent, | |
c906108c | 2915 | |
c5aa993b JM |
2916 | /* There was a breakpoint, stop and print. */ |
2917 | bp_noisy, | |
c906108c | 2918 | |
c5aa993b JM |
2919 | /* We hit the longjmp breakpoint. */ |
2920 | long_jump, | |
c906108c | 2921 | |
c5aa993b JM |
2922 | /* We hit the longjmp_resume breakpoint. */ |
2923 | long_resume, | |
c906108c | 2924 | |
c5aa993b JM |
2925 | /* We hit the step_resume breakpoint. */ |
2926 | step_resume, | |
c906108c | 2927 | |
c5aa993b JM |
2928 | /* We hit the through_sigtramp breakpoint. */ |
2929 | through_sig, | |
c906108c | 2930 | |
c5aa993b JM |
2931 | /* We hit the shared library event breakpoint. */ |
2932 | shlib_event, | |
c906108c | 2933 | |
c5aa993b JM |
2934 | /* We caught a shared library event. */ |
2935 | catch_shlib_event, | |
c906108c | 2936 | |
c5aa993b JM |
2937 | /* This is just used to count how many enums there are. */ |
2938 | class_last | |
c906108c SS |
2939 | }; |
2940 | ||
2941 | /* Here is the table which drives this routine. So that we can | |
2942 | format it pretty, we define some abbreviations for the | |
2943 | enum bpstat_what codes. */ | |
2944 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2945 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2946 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2947 | #define sgl BPSTAT_WHAT_SINGLE | |
2948 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2949 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2950 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2951 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2952 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2953 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2954 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2955 | ||
2956 | /* "Can't happen." Might want to print an error message. | |
2957 | abort() is not out of the question, but chances are GDB is just | |
2958 | a bit confused, not unusable. */ | |
2959 | #define err BPSTAT_WHAT_STOP_NOISY | |
2960 | ||
2961 | /* Given an old action and a class, come up with a new action. */ | |
2962 | /* One interesting property of this table is that wp_silent is the same | |
2963 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2964 | after stopping, the check for whether to step over a breakpoint | |
2965 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2966 | reference to how we stopped. We retain separate wp_silent and |
2967 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2968 | |
2969 | Another possibly interesting property of this table is that | |
2970 | there's a partial ordering, priority-like, of the actions. Once | |
2971 | you've decided that some action is appropriate, you'll never go | |
2972 | back and decide something of a lower priority is better. The | |
2973 | ordering is: | |
2974 | ||
7e73cedf | 2975 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2976 | sgl < clrs shl shlr slr sn sr ss ts |
2977 | slr < err shl shlr sn sr ss ts | |
2978 | clr < clrs err shl shlr sn sr ss ts | |
2979 | clrs < err shl shlr sn sr ss ts | |
2980 | ss < shl shlr sn sr ts | |
2981 | sn < shl shlr sr ts | |
2982 | sr < shl shlr ts | |
2983 | shl < shlr | |
2984 | ts < | |
2985 | shlr < | |
2986 | ||
43ff13b4 JM |
2987 | What I think this means is that we don't need a damned table |
2988 | here. If you just put the rows and columns in the right order, | |
2989 | it'd look awfully regular. We could simply walk the bpstat list | |
2990 | and choose the highest priority action we find, with a little | |
2991 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2992 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2993 | is messy anyway). */ | |
c906108c SS |
2994 | |
2995 | /* step_resume entries: a step resume breakpoint overrides another | |
2996 | breakpoint of signal handling (see comment in wait_for_inferior | |
d7bd68ca | 2997 | at first PC_IN_SIGTRAMP where we set the step_resume breakpoint). */ |
c906108c SS |
2998 | /* We handle the through_sigtramp_breakpoint the same way; having both |
2999 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3000 | ||
3001 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3002 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3003 | { | |
3004 | /* old action */ | |
3005 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3006 | */ | |
3007 | /*no_effect */ | |
3008 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3009 | /*wp_silent */ | |
3010 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3011 | /*wp_noisy */ | |
3012 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3013 | /*bp_nostop */ | |
3014 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3015 | /*bp_silent */ | |
3016 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3017 | /*bp_noisy */ | |
3018 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3019 | /*long_jump */ | |
a48bb0b3 | 3020 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3021 | /*long_resume */ |
3022 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3023 | /*step_resume */ | |
3024 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3025 | /*through_sig */ | |
3026 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3027 | /*shlib */ | |
3028 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3029 | /*catch_shlib */ | |
3030 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3031 | }; | |
c906108c SS |
3032 | |
3033 | #undef kc | |
3034 | #undef ss | |
3035 | #undef sn | |
3036 | #undef sgl | |
3037 | #undef slr | |
3038 | #undef clr | |
3039 | #undef clrs | |
3040 | #undef err | |
3041 | #undef sr | |
3042 | #undef ts | |
3043 | #undef shl | |
3044 | #undef shlr | |
3045 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3046 | struct bpstat_what retval; | |
3047 | ||
3048 | retval.call_dummy = 0; | |
3049 | for (; bs != NULL; bs = bs->next) | |
3050 | { | |
3051 | enum class bs_class = no_effect; | |
3052 | if (bs->breakpoint_at == NULL) | |
3053 | /* I suspect this can happen if it was a momentary breakpoint | |
3054 | which has since been deleted. */ | |
3055 | continue; | |
3056 | switch (bs->breakpoint_at->type) | |
3057 | { | |
3058 | case bp_none: | |
3059 | continue; | |
3060 | ||
3061 | case bp_breakpoint: | |
3062 | case bp_hardware_breakpoint: | |
3063 | case bp_until: | |
3064 | case bp_finish: | |
3065 | if (bs->stop) | |
3066 | { | |
3067 | if (bs->print) | |
3068 | bs_class = bp_noisy; | |
3069 | else | |
3070 | bs_class = bp_silent; | |
3071 | } | |
3072 | else | |
3073 | bs_class = bp_nostop; | |
3074 | break; | |
3075 | case bp_watchpoint: | |
3076 | case bp_hardware_watchpoint: | |
3077 | case bp_read_watchpoint: | |
3078 | case bp_access_watchpoint: | |
3079 | if (bs->stop) | |
3080 | { | |
3081 | if (bs->print) | |
3082 | bs_class = wp_noisy; | |
3083 | else | |
3084 | bs_class = wp_silent; | |
3085 | } | |
3086 | else | |
53a5351d JM |
3087 | /* There was a watchpoint, but we're not stopping. |
3088 | This requires no further action. */ | |
c906108c SS |
3089 | bs_class = no_effect; |
3090 | break; | |
3091 | case bp_longjmp: | |
3092 | bs_class = long_jump; | |
3093 | break; | |
3094 | case bp_longjmp_resume: | |
3095 | bs_class = long_resume; | |
3096 | break; | |
3097 | case bp_step_resume: | |
3098 | if (bs->stop) | |
3099 | { | |
3100 | bs_class = step_resume; | |
3101 | } | |
3102 | else | |
3103 | /* It is for the wrong frame. */ | |
3104 | bs_class = bp_nostop; | |
3105 | break; | |
3106 | case bp_through_sigtramp: | |
3107 | bs_class = through_sig; | |
3108 | break; | |
3109 | case bp_watchpoint_scope: | |
3110 | bs_class = bp_nostop; | |
3111 | break; | |
c5aa993b JM |
3112 | case bp_shlib_event: |
3113 | bs_class = shlib_event; | |
3114 | break; | |
c4093a6a | 3115 | case bp_thread_event: |
1900040c | 3116 | case bp_overlay_event: |
c4093a6a JM |
3117 | bs_class = bp_nostop; |
3118 | break; | |
c5aa993b JM |
3119 | case bp_catch_load: |
3120 | case bp_catch_unload: | |
3121 | /* Only if this catchpoint triggered should we cause the | |
3122 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3123 | catchpoint. */ | |
3124 | if (bs->stop) | |
3125 | bs_class = catch_shlib_event; | |
3126 | else | |
3127 | bs_class = no_effect; | |
3128 | break; | |
3129 | case bp_catch_fork: | |
3130 | case bp_catch_vfork: | |
3131 | case bp_catch_exec: | |
3132 | if (bs->stop) | |
3133 | { | |
3134 | if (bs->print) | |
3135 | bs_class = bp_noisy; | |
3136 | else | |
3137 | bs_class = bp_silent; | |
3138 | } | |
3139 | else | |
53a5351d JM |
3140 | /* There was a catchpoint, but we're not stopping. |
3141 | This requires no further action. */ | |
c5aa993b JM |
3142 | bs_class = no_effect; |
3143 | break; | |
3144 | case bp_catch_catch: | |
3145 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3146 | bs_class = bp_nostop; | |
3147 | else if (bs->stop) | |
3148 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3149 | break; | |
3150 | case bp_catch_throw: | |
3151 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3152 | bs_class = bp_nostop; | |
3153 | else if (bs->stop) | |
3154 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3155 | break; |
c906108c | 3156 | case bp_call_dummy: |
53a5351d JM |
3157 | /* Make sure the action is stop (silent or noisy), |
3158 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3159 | bs_class = bp_silent; |
3160 | retval.call_dummy = 1; | |
3161 | break; | |
3162 | } | |
c5aa993b | 3163 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3164 | } |
3165 | retval.main_action = current_action; | |
3166 | return retval; | |
3167 | } | |
3168 | ||
3169 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3170 | without hardware support). This isn't related to a specific bpstat, | |
3171 | just to things like whether watchpoints are set. */ | |
3172 | ||
c5aa993b | 3173 | int |
fba45db2 | 3174 | bpstat_should_step (void) |
c906108c SS |
3175 | { |
3176 | struct breakpoint *b; | |
3177 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 3178 | if (b->enable_state == bp_enabled && b->type == bp_watchpoint) |
3172dc30 | 3179 | return 1; |
c906108c SS |
3180 | return 0; |
3181 | } | |
3182 | ||
3183 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3184 | int | |
fba45db2 | 3185 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3186 | { |
075f6582 DJ |
3187 | struct bp_location *bpt; |
3188 | ALL_BP_LOCATIONS (bpt) | |
3189 | if ((bpt->owner->enable_state == bp_enabled) | |
3190 | && bpt->inserted | |
3191 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3192 | return 1; |
c906108c SS |
3193 | return 0; |
3194 | } | |
c906108c | 3195 | \f |
c5aa993b | 3196 | |
c906108c SS |
3197 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3198 | function returns another bpstat which contains only the catchpoints | |
3199 | on that first list, if any. */ | |
3200 | void | |
fba45db2 | 3201 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3202 | { |
3203 | struct bpstats root_bs[1]; | |
3204 | bpstat bs = root_bs; | |
3205 | struct breakpoint *ep; | |
3206 | char *dll_pathname; | |
3207 | ||
c906108c SS |
3208 | bpstat_clear (cp_list); |
3209 | root_bs->next = NULL; | |
c5aa993b JM |
3210 | |
3211 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3212 | { |
3213 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3214 | ep = ep_list->breakpoint_at; | |
3215 | if (ep == NULL) | |
c5aa993b JM |
3216 | break; |
3217 | if ((ep->type != bp_catch_load) && | |
3218 | (ep->type != bp_catch_unload) && | |
3219 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3220 | (ep->type != bp_catch_throw)) |
3221 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3222 | continue; |
3223 | ||
c906108c SS |
3224 | /* Yes; add it to the list. */ |
3225 | bs = bpstat_alloc (ep, bs); | |
3226 | *bs = *ep_list; | |
3227 | bs->next = NULL; | |
3228 | bs = root_bs->next; | |
c5aa993b | 3229 | |
c906108c SS |
3230 | #if defined(SOLIB_ADD) |
3231 | /* Also, for each triggered catchpoint, tag it with the name of | |
3232 | the library that caused this trigger. (We copy the name now, | |
3233 | because it's only guaranteed to be available NOW, when the | |
3234 | catchpoint triggers. Clients who may wish to know the name | |
3235 | later must get it from the catchpoint itself.) */ | |
3236 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3237 | xfree (ep->triggered_dll_pathname); |
c906108c | 3238 | if (ep->type == bp_catch_load) |
39f77062 KB |
3239 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3240 | PIDGET (inferior_ptid)); | |
c906108c | 3241 | else |
39f77062 KB |
3242 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3243 | PIDGET (inferior_ptid)); | |
c906108c SS |
3244 | #else |
3245 | dll_pathname = NULL; | |
3246 | #endif | |
3247 | if (dll_pathname) | |
3248 | { | |
53a5351d JM |
3249 | ep->triggered_dll_pathname = (char *) |
3250 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3251 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3252 | } | |
3253 | else | |
3254 | ep->triggered_dll_pathname = NULL; | |
3255 | } | |
c5aa993b | 3256 | |
c906108c SS |
3257 | *cp_list = bs; |
3258 | } | |
3259 | ||
c4093a6a | 3260 | /* Print B to gdb_stdout. */ |
c906108c | 3261 | static void |
c4093a6a JM |
3262 | print_one_breakpoint (struct breakpoint *b, |
3263 | CORE_ADDR *last_addr) | |
c906108c | 3264 | { |
52f0bd74 AC |
3265 | struct command_line *l; |
3266 | struct symbol *sym; | |
c4093a6a JM |
3267 | struct ep_type_description |
3268 | { | |
3269 | enum bptype type; | |
3270 | char *description; | |
3271 | }; | |
3272 | static struct ep_type_description bptypes[] = | |
c906108c | 3273 | { |
c5aa993b JM |
3274 | {bp_none, "?deleted?"}, |
3275 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3276 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3277 | {bp_until, "until"}, |
3278 | {bp_finish, "finish"}, | |
3279 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3280 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3281 | {bp_read_watchpoint, "read watchpoint"}, |
3282 | {bp_access_watchpoint, "acc watchpoint"}, | |
3283 | {bp_longjmp, "longjmp"}, | |
3284 | {bp_longjmp_resume, "longjmp resume"}, | |
3285 | {bp_step_resume, "step resume"}, | |
3286 | {bp_through_sigtramp, "sigtramp"}, | |
3287 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3288 | {bp_call_dummy, "call dummy"}, | |
3289 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3290 | {bp_thread_event, "thread events"}, |
1900040c | 3291 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3292 | {bp_catch_load, "catch load"}, |
3293 | {bp_catch_unload, "catch unload"}, | |
3294 | {bp_catch_fork, "catch fork"}, | |
3295 | {bp_catch_vfork, "catch vfork"}, | |
3296 | {bp_catch_exec, "catch exec"}, | |
3297 | {bp_catch_catch, "catch catch"}, | |
3298 | {bp_catch_throw, "catch throw"} | |
3299 | }; | |
c4093a6a | 3300 | |
c5aa993b JM |
3301 | static char *bpdisps[] = |
3302 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3303 | static char bpenables[] = "nynny"; |
c906108c | 3304 | char wrap_indent[80]; |
8b93c638 JM |
3305 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3306 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3307 | struct cleanup *bkpt_chain; |
c906108c | 3308 | |
c4093a6a | 3309 | annotate_record (); |
3b31d625 | 3310 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3311 | |
3312 | /* 1 */ | |
3313 | annotate_field (0); | |
8b93c638 | 3314 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3315 | |
3316 | /* 2 */ | |
3317 | annotate_field (1); | |
3318 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3319 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3320 | internal_error (__FILE__, __LINE__, |
3321 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3322 | (int) b->type); |
8b93c638 | 3323 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3324 | |
3325 | /* 3 */ | |
3326 | annotate_field (2); | |
8b93c638 | 3327 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3328 | |
3329 | /* 4 */ | |
3330 | annotate_field (3); | |
b5de0fa7 | 3331 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3332 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3333 | |
3334 | /* 5 and 6 */ | |
3335 | strcpy (wrap_indent, " "); | |
3336 | if (addressprint) | |
75ac9d7b MS |
3337 | { |
3338 | if (TARGET_ADDR_BIT <= 32) | |
3339 | strcat (wrap_indent, " "); | |
3340 | else | |
3341 | strcat (wrap_indent, " "); | |
3342 | } | |
c906108c | 3343 | |
3086aeae DJ |
3344 | if (b->ops != NULL && b->ops->print_one != NULL) |
3345 | b->ops->print_one (b, last_addr); | |
3346 | else | |
3347 | switch (b->type) | |
3348 | { | |
3349 | case bp_none: | |
3350 | internal_error (__FILE__, __LINE__, | |
3351 | "print_one_breakpoint: bp_none encountered\n"); | |
3352 | break; | |
c906108c | 3353 | |
3086aeae DJ |
3354 | case bp_watchpoint: |
3355 | case bp_hardware_watchpoint: | |
3356 | case bp_read_watchpoint: | |
3357 | case bp_access_watchpoint: | |
3358 | /* Field 4, the address, is omitted (which makes the columns | |
3359 | not line up too nicely with the headers, but the effect | |
3360 | is relatively readable). */ | |
3361 | if (addressprint) | |
3362 | ui_out_field_skip (uiout, "addr"); | |
3363 | annotate_field (5); | |
3364 | print_expression (b->exp, stb->stream); | |
3365 | ui_out_field_stream (uiout, "what", stb); | |
3366 | break; | |
3367 | ||
3368 | case bp_catch_load: | |
3369 | case bp_catch_unload: | |
3370 | /* Field 4, the address, is omitted (which makes the columns | |
3371 | not line up too nicely with the headers, but the effect | |
3372 | is relatively readable). */ | |
3373 | if (addressprint) | |
3374 | ui_out_field_skip (uiout, "addr"); | |
3375 | annotate_field (5); | |
3376 | if (b->dll_pathname == NULL) | |
3377 | { | |
3378 | ui_out_field_string (uiout, "what", "<any library>"); | |
3379 | ui_out_spaces (uiout, 1); | |
3380 | } | |
3381 | else | |
3382 | { | |
3383 | ui_out_text (uiout, "library \""); | |
3384 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3385 | ui_out_text (uiout, "\" "); | |
3386 | } | |
3387 | break; | |
3388 | ||
3389 | case bp_catch_fork: | |
3390 | case bp_catch_vfork: | |
3391 | /* Field 4, the address, is omitted (which makes the columns | |
3392 | not line up too nicely with the headers, but the effect | |
3393 | is relatively readable). */ | |
3394 | if (addressprint) | |
3395 | ui_out_field_skip (uiout, "addr"); | |
3396 | annotate_field (5); | |
3397 | if (b->forked_inferior_pid != 0) | |
3398 | { | |
3399 | ui_out_text (uiout, "process "); | |
3400 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3401 | ui_out_spaces (uiout, 1); | |
3402 | } | |
3403 | ||
3404 | case bp_catch_exec: | |
3405 | /* Field 4, the address, is omitted (which makes the columns | |
3406 | not line up too nicely with the headers, but the effect | |
3407 | is relatively readable). */ | |
3408 | if (addressprint) | |
3409 | ui_out_field_skip (uiout, "addr"); | |
3410 | annotate_field (5); | |
3411 | if (b->exec_pathname != NULL) | |
3412 | { | |
3413 | ui_out_text (uiout, "program \""); | |
3414 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3415 | ui_out_text (uiout, "\" "); | |
3416 | } | |
3417 | break; | |
3418 | ||
3419 | case bp_catch_catch: | |
3420 | /* Field 4, the address, is omitted (which makes the columns | |
3421 | not line up too nicely with the headers, but the effect | |
3422 | is relatively readable). */ | |
3423 | if (addressprint) | |
3424 | ui_out_field_skip (uiout, "addr"); | |
3425 | annotate_field (5); | |
3426 | ui_out_field_string (uiout, "what", "exception catch"); | |
3427 | ui_out_spaces (uiout, 1); | |
3428 | break; | |
3429 | ||
3430 | case bp_catch_throw: | |
3431 | /* Field 4, the address, is omitted (which makes the columns | |
3432 | not line up too nicely with the headers, but the effect | |
3433 | is relatively readable). */ | |
3434 | if (addressprint) | |
3435 | ui_out_field_skip (uiout, "addr"); | |
3436 | annotate_field (5); | |
3437 | ui_out_field_string (uiout, "what", "exception throw"); | |
3438 | ui_out_spaces (uiout, 1); | |
3439 | break; | |
3440 | ||
3441 | case bp_breakpoint: | |
3442 | case bp_hardware_breakpoint: | |
3443 | case bp_until: | |
3444 | case bp_finish: | |
3445 | case bp_longjmp: | |
3446 | case bp_longjmp_resume: | |
3447 | case bp_step_resume: | |
3448 | case bp_through_sigtramp: | |
3449 | case bp_watchpoint_scope: | |
3450 | case bp_call_dummy: | |
3451 | case bp_shlib_event: | |
3452 | case bp_thread_event: | |
3453 | case bp_overlay_event: | |
3454 | if (addressprint) | |
3455 | { | |
3456 | annotate_field (4); | |
5cab636d | 3457 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
3458 | } |
3459 | annotate_field (5); | |
5cab636d | 3460 | *last_addr = b->loc->address; |
3086aeae DJ |
3461 | if (b->source_file) |
3462 | { | |
cf3a9e5b | 3463 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3464 | if (sym) |
3465 | { | |
3466 | ui_out_text (uiout, "in "); | |
3467 | ui_out_field_string (uiout, "func", | |
3468 | SYMBOL_PRINT_NAME (sym)); | |
3469 | ui_out_wrap_hint (uiout, wrap_indent); | |
3470 | ui_out_text (uiout, " at "); | |
3471 | } | |
3472 | ui_out_field_string (uiout, "file", b->source_file); | |
3473 | ui_out_text (uiout, ":"); | |
3474 | ui_out_field_int (uiout, "line", b->line_number); | |
3475 | } | |
3476 | else | |
3477 | { | |
5cab636d | 3478 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3479 | ui_out_field_stream (uiout, "at", stb); |
3480 | } | |
3481 | break; | |
3482 | } | |
c906108c | 3483 | |
c4093a6a JM |
3484 | if (b->thread != -1) |
3485 | { | |
8b93c638 JM |
3486 | /* FIXME: This seems to be redundant and lost here; see the |
3487 | "stop only in" line a little further down. */ | |
3488 | ui_out_text (uiout, " thread "); | |
3489 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3490 | } |
3491 | ||
8b93c638 | 3492 | ui_out_text (uiout, "\n"); |
c4093a6a | 3493 | |
818dd999 | 3494 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3495 | { |
3496 | annotate_field (6); | |
8b93c638 | 3497 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3498 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3499 | the frame ID. */ | |
d0a55772 | 3500 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3501 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3502 | } |
3503 | ||
3504 | if (b->cond) | |
3505 | { | |
3506 | annotate_field (7); | |
8b93c638 JM |
3507 | ui_out_text (uiout, "\tstop only if "); |
3508 | print_expression (b->cond, stb->stream); | |
3509 | ui_out_field_stream (uiout, "cond", stb); | |
3510 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3511 | } |
3512 | ||
3513 | if (b->thread != -1) | |
3514 | { | |
3515 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3516 | ui_out_text (uiout, "\tstop only in thread "); |
3517 | ui_out_field_int (uiout, "thread", b->thread); | |
3518 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3519 | } |
3520 | ||
3521 | if (show_breakpoint_hit_counts && b->hit_count) | |
3522 | { | |
3523 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3524 | if (ep_is_catchpoint (b)) |
3525 | ui_out_text (uiout, "\tcatchpoint"); | |
3526 | else | |
3527 | ui_out_text (uiout, "\tbreakpoint"); | |
3528 | ui_out_text (uiout, " already hit "); | |
3529 | ui_out_field_int (uiout, "times", b->hit_count); | |
3530 | if (b->hit_count == 1) | |
3531 | ui_out_text (uiout, " time\n"); | |
3532 | else | |
3533 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3534 | } |
3535 | ||
fb40c209 AC |
3536 | /* Output the count also if it is zero, but only if this is |
3537 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3538 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3539 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3540 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3541 | |
c4093a6a JM |
3542 | if (b->ignore_count) |
3543 | { | |
3544 | annotate_field (8); | |
8b93c638 JM |
3545 | ui_out_text (uiout, "\tignore next "); |
3546 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3547 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3548 | } |
3549 | ||
3550 | if ((l = b->commands)) | |
3551 | { | |
3b31d625 EZ |
3552 | struct cleanup *script_chain; |
3553 | ||
c4093a6a | 3554 | annotate_field (9); |
3b31d625 | 3555 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3556 | print_command_lines (uiout, l, 4); |
3b31d625 | 3557 | do_cleanups (script_chain); |
c4093a6a | 3558 | } |
3b31d625 | 3559 | do_cleanups (bkpt_chain); |
8b93c638 | 3560 | do_cleanups (old_chain); |
c4093a6a | 3561 | } |
c5aa993b | 3562 | |
c4093a6a JM |
3563 | struct captured_breakpoint_query_args |
3564 | { | |
3565 | int bnum; | |
3566 | }; | |
c5aa993b | 3567 | |
c4093a6a | 3568 | static int |
2b65245e | 3569 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3570 | { |
3571 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3572 | struct breakpoint *b; |
c4093a6a JM |
3573 | CORE_ADDR dummy_addr = 0; |
3574 | ALL_BREAKPOINTS (b) | |
3575 | { | |
3576 | if (args->bnum == b->number) | |
c5aa993b | 3577 | { |
c4093a6a JM |
3578 | print_one_breakpoint (b, &dummy_addr); |
3579 | return GDB_RC_OK; | |
c5aa993b | 3580 | } |
c4093a6a JM |
3581 | } |
3582 | return GDB_RC_NONE; | |
3583 | } | |
c5aa993b | 3584 | |
c4093a6a | 3585 | enum gdb_rc |
2b65245e | 3586 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3587 | { |
3588 | struct captured_breakpoint_query_args args; | |
3589 | args.bnum = bnum; | |
3590 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3591 | an error. */ | |
2b65245e AC |
3592 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3593 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3594 | } |
c5aa993b | 3595 | |
7f3b0473 AC |
3596 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3597 | catchpoints, et.al.). */ | |
3598 | ||
3599 | static int | |
3600 | user_settable_breakpoint (const struct breakpoint *b) | |
3601 | { | |
3602 | return (b->type == bp_breakpoint | |
3603 | || b->type == bp_catch_load | |
3604 | || b->type == bp_catch_unload | |
3605 | || b->type == bp_catch_fork | |
3606 | || b->type == bp_catch_vfork | |
3607 | || b->type == bp_catch_exec | |
3608 | || b->type == bp_catch_catch | |
3609 | || b->type == bp_catch_throw | |
3610 | || b->type == bp_hardware_breakpoint | |
3611 | || b->type == bp_watchpoint | |
3612 | || b->type == bp_read_watchpoint | |
3613 | || b->type == bp_access_watchpoint | |
3614 | || b->type == bp_hardware_watchpoint); | |
3615 | } | |
3616 | ||
3617 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3618 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3619 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3620 | |
c4093a6a | 3621 | static void |
fba45db2 | 3622 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3623 | { |
52f0bd74 | 3624 | struct breakpoint *b; |
c4093a6a | 3625 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3626 | int nr_printable_breakpoints; |
3b31d625 | 3627 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3628 | |
7f3b0473 AC |
3629 | /* Compute the number of rows in the table. */ |
3630 | nr_printable_breakpoints = 0; | |
3631 | ALL_BREAKPOINTS (b) | |
3632 | if (bnum == -1 | |
3633 | || bnum == b->number) | |
3634 | { | |
3635 | if (allflag || user_settable_breakpoint (b)) | |
3636 | nr_printable_breakpoints++; | |
3637 | } | |
3638 | ||
8b93c638 | 3639 | if (addressprint) |
3b31d625 EZ |
3640 | bkpttbl_chain |
3641 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3642 | "BreakpointTable"); | |
8b93c638 | 3643 | else |
3b31d625 EZ |
3644 | bkpttbl_chain |
3645 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3646 | "BreakpointTable"); | |
8b93c638 | 3647 | |
7f3b0473 | 3648 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3649 | annotate_breakpoints_headers (); |
3650 | if (nr_printable_breakpoints > 0) | |
3651 | annotate_field (0); | |
3652 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3653 | if (nr_printable_breakpoints > 0) | |
3654 | annotate_field (1); | |
3655 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3656 | if (nr_printable_breakpoints > 0) | |
3657 | annotate_field (2); | |
3658 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3659 | if (nr_printable_breakpoints > 0) | |
3660 | annotate_field (3); | |
3661 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3662 | if (addressprint) | |
7f3b0473 | 3663 | { |
d7faa9e7 AC |
3664 | if (nr_printable_breakpoints > 0) |
3665 | annotate_field (4); | |
7f3b0473 | 3666 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3667 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3668 | else |
b25959ec | 3669 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3670 | } |
d7faa9e7 AC |
3671 | if (nr_printable_breakpoints > 0) |
3672 | annotate_field (5); | |
3673 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3674 | ui_out_table_body (uiout); | |
3675 | if (nr_printable_breakpoints > 0) | |
3676 | annotate_breakpoints_table (); | |
7f3b0473 | 3677 | |
c4093a6a JM |
3678 | ALL_BREAKPOINTS (b) |
3679 | if (bnum == -1 | |
3680 | || bnum == b->number) | |
3681 | { | |
3682 | /* We only print out user settable breakpoints unless the | |
3683 | allflag is set. */ | |
7f3b0473 AC |
3684 | if (allflag || user_settable_breakpoint (b)) |
3685 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3686 | } |
3687 | ||
3b31d625 | 3688 | do_cleanups (bkpttbl_chain); |
698384cd | 3689 | |
7f3b0473 | 3690 | if (nr_printable_breakpoints == 0) |
c906108c | 3691 | { |
8b93c638 JM |
3692 | if (bnum == -1) |
3693 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3694 | else | |
3695 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3696 | bnum); | |
c906108c SS |
3697 | } |
3698 | else | |
c4093a6a JM |
3699 | { |
3700 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3701 | that a comparison of an unsigned with -1 is always false. */ | |
3702 | if (last_addr != (CORE_ADDR) -1) | |
3703 | set_next_address (last_addr); | |
3704 | } | |
c906108c | 3705 | |
c4093a6a JM |
3706 | /* FIXME? Should this be moved up so that it is only called when |
3707 | there have been breakpoints? */ | |
c906108c SS |
3708 | annotate_breakpoints_table_end (); |
3709 | } | |
3710 | ||
c906108c | 3711 | static void |
fba45db2 | 3712 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3713 | { |
3714 | int bnum = -1; | |
3715 | ||
3716 | if (bnum_exp) | |
bb518678 | 3717 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3718 | |
3719 | breakpoint_1 (bnum, 0); | |
3720 | } | |
3721 | ||
7a292a7a | 3722 | static void |
fba45db2 | 3723 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3724 | { |
3725 | int bnum = -1; | |
3726 | ||
3727 | if (bnum_exp) | |
bb518678 | 3728 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3729 | |
3730 | breakpoint_1 (bnum, 1); | |
3731 | } | |
3732 | ||
c906108c SS |
3733 | /* Print a message describing any breakpoints set at PC. */ |
3734 | ||
3735 | static void | |
fba45db2 | 3736 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3737 | { |
52f0bd74 AC |
3738 | int others = 0; |
3739 | struct breakpoint *b; | |
c906108c SS |
3740 | |
3741 | ALL_BREAKPOINTS (b) | |
5cab636d | 3742 | if (b->loc->address == pc) /* address match / overlay match */ |
cf3a9e5b | 3743 | if (!overlay_debugging || b->loc->section == section) |
9f04af04 | 3744 | others++; |
c906108c SS |
3745 | if (others > 0) |
3746 | { | |
3747 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3748 | ALL_BREAKPOINTS (b) | |
5cab636d | 3749 | if (b->loc->address == pc) /* address match / overlay match */ |
cf3a9e5b | 3750 | if (!overlay_debugging || b->loc->section == section) |
9f04af04 MS |
3751 | { |
3752 | others--; | |
3753 | printf_filtered ("%d%s%s ", | |
3754 | b->number, | |
3755 | ((b->enable_state == bp_disabled || | |
3756 | b->enable_state == bp_shlib_disabled || | |
3757 | b->enable_state == bp_call_disabled) | |
3758 | ? " (disabled)" | |
3759 | : b->enable_state == bp_permanent | |
3760 | ? " (permanent)" | |
3761 | : ""), | |
3762 | (others > 1) ? "," | |
3763 | : ((others == 1) ? " and" : "")); | |
3764 | } | |
c906108c SS |
3765 | printf_filtered ("also set at pc "); |
3766 | print_address_numeric (pc, 1, gdb_stdout); | |
3767 | printf_filtered (".\n"); | |
3768 | } | |
3769 | } | |
3770 | \f | |
3771 | /* Set the default place to put a breakpoint | |
3772 | for the `break' command with no arguments. */ | |
3773 | ||
3774 | void | |
fba45db2 KB |
3775 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3776 | int line) | |
c906108c SS |
3777 | { |
3778 | default_breakpoint_valid = valid; | |
3779 | default_breakpoint_address = addr; | |
3780 | default_breakpoint_symtab = symtab; | |
3781 | default_breakpoint_line = line; | |
3782 | } | |
3783 | ||
e4f237da KB |
3784 | /* Return true iff it is meaningful to use the address member of |
3785 | BPT. For some breakpoint types, the address member is irrelevant | |
3786 | and it makes no sense to attempt to compare it to other addresses | |
3787 | (or use it for any other purpose either). | |
3788 | ||
3789 | More specifically, each of the following breakpoint types will always | |
3790 | have a zero valued address and we don't want check_duplicates() to mark | |
3791 | breakpoints of any of these types to be a duplicate of an actual | |
3792 | breakpoint at address zero: | |
3793 | ||
3794 | bp_watchpoint | |
3795 | bp_hardware_watchpoint | |
3796 | bp_read_watchpoint | |
3797 | bp_access_watchpoint | |
3798 | bp_catch_exec | |
3799 | bp_longjmp_resume | |
3800 | bp_catch_fork | |
3801 | bp_catch_vork */ | |
3802 | ||
3803 | static int | |
3804 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3805 | { | |
3806 | enum bptype type = bpt->type; | |
3807 | ||
3808 | return (type != bp_watchpoint | |
3809 | && type != bp_hardware_watchpoint | |
3810 | && type != bp_read_watchpoint | |
3811 | && type != bp_access_watchpoint | |
3812 | && type != bp_catch_exec | |
3813 | && type != bp_longjmp_resume | |
3814 | && type != bp_catch_fork | |
3815 | && type != bp_catch_vfork); | |
3816 | } | |
3817 | ||
9f60f21b | 3818 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3819 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3820 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3821 | If we have a permanent breakpoint at the same place as BPT, make |
3822 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3823 | |
3824 | static void | |
9f60f21b | 3825 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3826 | { |
075f6582 | 3827 | struct bp_location *b; |
52f0bd74 | 3828 | int count = 0; |
075f6582 | 3829 | struct bp_location *perm_bp = 0; |
5cab636d | 3830 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3831 | asection *section = bpt->loc->section; |
c906108c | 3832 | |
e4f237da | 3833 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3834 | return; |
3835 | ||
075f6582 DJ |
3836 | ALL_BP_LOCATIONS (b) |
3837 | if (b->owner->enable_state != bp_disabled | |
3838 | && b->owner->enable_state != bp_shlib_disabled | |
3839 | && b->owner->enable_state != bp_call_disabled | |
3840 | && b->address == address /* address / overlay match */ | |
3841 | && (!overlay_debugging || b->section == section) | |
3842 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3843 | { |
c2c6d25f | 3844 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3845 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3846 | { |
3847 | perm_bp = b; | |
3848 | break; | |
3849 | } | |
3850 | ||
c5aa993b | 3851 | count++; |
075f6582 | 3852 | b->duplicate = count > 1; |
c5aa993b | 3853 | } |
c2c6d25f JM |
3854 | |
3855 | /* If we found a permanent breakpoint at this address, go over the | |
3856 | list again and declare all the other breakpoints there to be the | |
3857 | duplicates. */ | |
3858 | if (perm_bp) | |
3859 | { | |
075f6582 | 3860 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3861 | |
3862 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3863 | if (! perm_bp->inserted) |
8e65ff28 AC |
3864 | internal_error (__FILE__, __LINE__, |
3865 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3866 | "actually inserted"); |
3867 | ||
075f6582 | 3868 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3869 | if (b != perm_bp) |
3870 | { | |
075f6582 DJ |
3871 | if (b->owner->enable_state != bp_disabled |
3872 | && b->owner->enable_state != bp_shlib_disabled | |
3873 | && b->owner->enable_state != bp_call_disabled | |
3874 | && b->address == address /* address / overlay match */ | |
3875 | && (!overlay_debugging || b->section == section) | |
3876 | && breakpoint_address_is_meaningful (b->owner)) | |
3877 | { | |
3878 | if (b->inserted) | |
3879 | internal_error (__FILE__, __LINE__, | |
3880 | "another breakpoint was inserted on top of " | |
3881 | "a permanent breakpoint"); | |
3882 | ||
3883 | b->duplicate = 1; | |
3884 | } | |
c2c6d25f JM |
3885 | } |
3886 | } | |
c906108c SS |
3887 | } |
3888 | ||
76897487 KB |
3889 | static void |
3890 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3891 | int bnum, int have_bnum) | |
3892 | { | |
3893 | char astr1[40]; | |
3894 | char astr2[40]; | |
3895 | ||
3896 | strcpy (astr1, local_hex_string_custom ((unsigned long) from_addr, "08l")); | |
3897 | strcpy (astr2, local_hex_string_custom ((unsigned long) to_addr, "08l")); | |
3898 | if (have_bnum) | |
3899 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3900 | bnum, astr1, astr2); | |
3901 | else | |
3902 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3903 | } | |
3904 | ||
3905 | /* Adjust a breakpoint's address to account for architectural constraints | |
3906 | on breakpoint placement. Return the adjusted address. Note: Very | |
3907 | few targets require this kind of adjustment. For most targets, | |
3908 | this function is simply the identity function. */ | |
3909 | ||
3910 | static CORE_ADDR | |
3911 | adjust_breakpoint_address (CORE_ADDR bpaddr) | |
3912 | { | |
3913 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3914 | { | |
3915 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3916 | return bpaddr; | |
3917 | } | |
3918 | else | |
3919 | { | |
3920 | CORE_ADDR adjusted_bpaddr; | |
3921 | ||
3922 | /* Some targets have architectural constraints on the placement | |
3923 | of breakpoint instructions. Obtain the adjusted address. */ | |
3924 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3925 | bpaddr); | |
3926 | ||
3927 | /* An adjusted breakpoint address can significantly alter | |
3928 | a user's expectations. Print a warning if an adjustment | |
3929 | is required. */ | |
3930 | if (adjusted_bpaddr != bpaddr) | |
3931 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3932 | ||
3933 | return adjusted_bpaddr; | |
3934 | } | |
3935 | } | |
3936 | ||
7cc221ef DJ |
3937 | /* Allocate a struct bp_location. */ |
3938 | ||
26bb91f3 | 3939 | static struct bp_location * |
e049a4b5 | 3940 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3941 | { |
3942 | struct bp_location *loc, *loc_p; | |
3943 | ||
3944 | loc = xmalloc (sizeof (struct bp_location)); | |
3945 | memset (loc, 0, sizeof (*loc)); | |
3946 | ||
e049a4b5 DJ |
3947 | loc->owner = bpt; |
3948 | ||
3949 | switch (bp_type) | |
3950 | { | |
3951 | case bp_breakpoint: | |
3952 | case bp_until: | |
3953 | case bp_finish: | |
3954 | case bp_longjmp: | |
3955 | case bp_longjmp_resume: | |
3956 | case bp_step_resume: | |
3957 | case bp_through_sigtramp: | |
3958 | case bp_watchpoint_scope: | |
3959 | case bp_call_dummy: | |
3960 | case bp_shlib_event: | |
3961 | case bp_thread_event: | |
3962 | case bp_overlay_event: | |
3963 | case bp_catch_load: | |
3964 | case bp_catch_unload: | |
3965 | loc->loc_type = bp_loc_software_breakpoint; | |
3966 | break; | |
3967 | case bp_hardware_breakpoint: | |
3968 | loc->loc_type = bp_loc_hardware_breakpoint; | |
3969 | break; | |
3970 | case bp_hardware_watchpoint: | |
3971 | case bp_read_watchpoint: | |
3972 | case bp_access_watchpoint: | |
3973 | loc->loc_type = bp_loc_hardware_watchpoint; | |
3974 | break; | |
3975 | case bp_watchpoint: | |
3976 | case bp_catch_fork: | |
3977 | case bp_catch_vfork: | |
3978 | case bp_catch_exec: | |
3979 | case bp_catch_catch: | |
3980 | case bp_catch_throw: | |
3981 | loc->loc_type = bp_loc_other; | |
3982 | break; | |
3983 | default: | |
3984 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
3985 | } | |
3986 | ||
7cc221ef DJ |
3987 | /* Add this breakpoint to the end of the chain. */ |
3988 | ||
3989 | loc_p = bp_location_chain; | |
3990 | if (loc_p == 0) | |
3991 | bp_location_chain = loc; | |
3992 | else | |
3993 | { | |
3994 | while (loc_p->next) | |
3995 | loc_p = loc_p->next; | |
3996 | loc_p->next = loc; | |
3997 | } | |
3998 | ||
3999 | return loc; | |
4000 | } | |
4001 | ||
4d28f7a8 KB |
4002 | /* set_raw_breakpoint() is a low level routine for allocating and |
4003 | partially initializing a breakpoint of type BPTYPE. The newly | |
4004 | created breakpoint's address, section, source file name, and line | |
4005 | number are provided by SAL. The newly created and partially | |
4006 | initialized breakpoint is added to the breakpoint chain and | |
4007 | is also returned as the value of this function. | |
c906108c | 4008 | |
4d28f7a8 KB |
4009 | It is expected that the caller will complete the initialization of |
4010 | the newly created breakpoint struct as well as output any status | |
4011 | information regarding the creation of a new breakpoint. In | |
4012 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4013 | number! Care should be taken to not allow an error() to occur | |
4014 | prior to completing the initialization of the breakpoint. If this | |
4015 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4016 | |
4017 | struct breakpoint * | |
4d28f7a8 | 4018 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4019 | { |
52f0bd74 | 4020 | struct breakpoint *b, *b1; |
c906108c SS |
4021 | |
4022 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4023 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4024 | b->loc = allocate_bp_location (b, bptype); |
5cab636d DJ |
4025 | b->loc->requested_address = sal.pc; |
4026 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c SS |
4027 | if (sal.symtab == NULL) |
4028 | b->source_file = NULL; | |
4029 | else | |
4030 | b->source_file = savestring (sal.symtab->filename, | |
4031 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4032 | b->loc->section = sal.section; |
4d28f7a8 | 4033 | b->type = bptype; |
c906108c SS |
4034 | b->language = current_language->la_language; |
4035 | b->input_radix = input_radix; | |
4036 | b->thread = -1; | |
4037 | b->line_number = sal.line; | |
b5de0fa7 | 4038 | b->enable_state = bp_enabled; |
c906108c SS |
4039 | b->next = 0; |
4040 | b->silent = 0; | |
4041 | b->ignore_count = 0; | |
4042 | b->commands = NULL; | |
818dd999 | 4043 | b->frame_id = null_frame_id; |
c906108c SS |
4044 | b->dll_pathname = NULL; |
4045 | b->triggered_dll_pathname = NULL; | |
4046 | b->forked_inferior_pid = 0; | |
4047 | b->exec_pathname = NULL; | |
3086aeae | 4048 | b->ops = NULL; |
c906108c SS |
4049 | |
4050 | /* Add this breakpoint to the end of the chain | |
4051 | so that a list of breakpoints will come out in order | |
4052 | of increasing numbers. */ | |
4053 | ||
4054 | b1 = breakpoint_chain; | |
4055 | if (b1 == 0) | |
4056 | breakpoint_chain = b; | |
4057 | else | |
4058 | { | |
4059 | while (b1->next) | |
4060 | b1 = b1->next; | |
4061 | b1->next = b; | |
4062 | } | |
4063 | ||
9f60f21b | 4064 | check_duplicates (b); |
c906108c SS |
4065 | breakpoints_changed (); |
4066 | ||
4067 | return b; | |
4068 | } | |
4069 | ||
c2c6d25f JM |
4070 | |
4071 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4072 | instruction, hard-wired into the inferior's code. */ | |
4073 | void | |
4074 | make_breakpoint_permanent (struct breakpoint *b) | |
4075 | { | |
b5de0fa7 | 4076 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4077 | |
4078 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4079 | b->loc->inserted = 1; |
c2c6d25f JM |
4080 | } |
4081 | ||
1900040c MS |
4082 | static struct breakpoint * |
4083 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4084 | { | |
4085 | static int internal_breakpoint_number = -1; | |
4086 | struct symtab_and_line sal; | |
4087 | struct breakpoint *b; | |
4088 | ||
fe39c653 | 4089 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4090 | |
4091 | sal.pc = address; | |
4092 | sal.section = find_pc_overlay (sal.pc); | |
4093 | ||
4094 | b = set_raw_breakpoint (sal, type); | |
4095 | b->number = internal_breakpoint_number--; | |
4096 | b->disposition = disp_donttouch; | |
4097 | ||
4098 | return b; | |
4099 | } | |
4100 | ||
c906108c SS |
4101 | |
4102 | static void | |
fba45db2 | 4103 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4104 | { |
c906108c | 4105 | struct breakpoint *b; |
1900040c | 4106 | struct minimal_symbol *m; |
c906108c | 4107 | |
1900040c MS |
4108 | if (func_name == NULL) |
4109 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4110 | else | |
c906108c | 4111 | { |
5520a790 | 4112 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4113 | return; |
1900040c MS |
4114 | |
4115 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4116 | } |
c906108c | 4117 | |
b5de0fa7 | 4118 | b->enable_state = bp_disabled; |
c906108c SS |
4119 | b->silent = 1; |
4120 | if (func_name) | |
4fcf66da | 4121 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4122 | } |
4123 | ||
53a5351d JM |
4124 | /* Call this routine when stepping and nexting to enable a breakpoint |
4125 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4126 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4127 | ||
4128 | void | |
fba45db2 | 4129 | enable_longjmp_breakpoint (void) |
c906108c | 4130 | { |
52f0bd74 | 4131 | struct breakpoint *b; |
c906108c SS |
4132 | |
4133 | ALL_BREAKPOINTS (b) | |
4134 | if (b->type == bp_longjmp) | |
c5aa993b | 4135 | { |
b5de0fa7 | 4136 | b->enable_state = bp_enabled; |
9f60f21b | 4137 | check_duplicates (b); |
c5aa993b | 4138 | } |
c906108c SS |
4139 | } |
4140 | ||
4141 | void | |
fba45db2 | 4142 | disable_longjmp_breakpoint (void) |
c906108c | 4143 | { |
52f0bd74 | 4144 | struct breakpoint *b; |
c906108c SS |
4145 | |
4146 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4147 | if (b->type == bp_longjmp |
c906108c | 4148 | || b->type == bp_longjmp_resume) |
c5aa993b | 4149 | { |
b5de0fa7 | 4150 | b->enable_state = bp_disabled; |
9f60f21b | 4151 | check_duplicates (b); |
c5aa993b | 4152 | } |
c906108c SS |
4153 | } |
4154 | ||
1900040c MS |
4155 | static void |
4156 | create_overlay_event_breakpoint (char *func_name) | |
4157 | { | |
4158 | struct breakpoint *b; | |
4159 | struct minimal_symbol *m; | |
4160 | ||
5520a790 | 4161 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4162 | return; |
4163 | ||
4164 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4165 | bp_overlay_event); | |
4166 | b->addr_string = xstrdup (func_name); | |
4167 | ||
4168 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4169 | { |
4170 | b->enable_state = bp_enabled; | |
4171 | overlay_events_enabled = 1; | |
4172 | } | |
1900040c | 4173 | else |
c02f5703 MS |
4174 | { |
4175 | b->enable_state = bp_disabled; | |
4176 | overlay_events_enabled = 0; | |
4177 | } | |
1900040c MS |
4178 | } |
4179 | ||
4180 | void | |
4181 | enable_overlay_breakpoints (void) | |
4182 | { | |
52f0bd74 | 4183 | struct breakpoint *b; |
1900040c MS |
4184 | |
4185 | ALL_BREAKPOINTS (b) | |
4186 | if (b->type == bp_overlay_event) | |
4187 | { | |
4188 | b->enable_state = bp_enabled; | |
4189 | check_duplicates (b); | |
c02f5703 | 4190 | overlay_events_enabled = 1; |
1900040c MS |
4191 | } |
4192 | } | |
4193 | ||
4194 | void | |
4195 | disable_overlay_breakpoints (void) | |
4196 | { | |
52f0bd74 | 4197 | struct breakpoint *b; |
1900040c MS |
4198 | |
4199 | ALL_BREAKPOINTS (b) | |
4200 | if (b->type == bp_overlay_event) | |
4201 | { | |
4202 | b->enable_state = bp_disabled; | |
4203 | check_duplicates (b); | |
c02f5703 | 4204 | overlay_events_enabled = 0; |
1900040c MS |
4205 | } |
4206 | } | |
4207 | ||
c4093a6a | 4208 | struct breakpoint * |
fba45db2 | 4209 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4210 | { |
4211 | struct breakpoint *b; | |
c4093a6a | 4212 | |
1900040c | 4213 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4214 | |
b5de0fa7 | 4215 | b->enable_state = bp_enabled; |
c4093a6a | 4216 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5cab636d | 4217 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4218 | |
4219 | return b; | |
4220 | } | |
4221 | ||
4222 | void | |
4223 | remove_thread_event_breakpoints (void) | |
4224 | { | |
4225 | struct breakpoint *b, *temp; | |
4226 | ||
4227 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4228 | if (b->type == bp_thread_event) | |
4229 | delete_breakpoint (b); | |
4230 | } | |
4231 | ||
c906108c SS |
4232 | #ifdef SOLIB_ADD |
4233 | void | |
fba45db2 | 4234 | remove_solib_event_breakpoints (void) |
c906108c | 4235 | { |
52f0bd74 | 4236 | struct breakpoint *b, *temp; |
c906108c SS |
4237 | |
4238 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4239 | if (b->type == bp_shlib_event) | |
3172dc30 | 4240 | delete_breakpoint (b); |
c906108c SS |
4241 | } |
4242 | ||
c2c6d25f | 4243 | struct breakpoint * |
fba45db2 | 4244 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4245 | { |
4246 | struct breakpoint *b; | |
c2c6d25f | 4247 | |
1900040c | 4248 | b = create_internal_breakpoint (address, bp_shlib_event); |
c2c6d25f | 4249 | return b; |
c906108c SS |
4250 | } |
4251 | ||
104c1213 JM |
4252 | /* Disable any breakpoints that are on code in shared libraries. Only |
4253 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4254 | ||
c906108c | 4255 | void |
fba45db2 | 4256 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4257 | { |
c5aa993b JM |
4258 | struct breakpoint *b; |
4259 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4260 | |
4261 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4262 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4263 | { |
c906108c | 4264 | #if defined (PC_SOLIB) |
c5aa993b JM |
4265 | if (((b->type == bp_breakpoint) || |
4266 | (b->type == bp_hardware_breakpoint)) && | |
b5de0fa7 | 4267 | b->enable_state == bp_enabled && |
5cab636d DJ |
4268 | !b->loc->duplicate && |
4269 | PC_SOLIB (b->loc->address)) | |
c5aa993b | 4270 | { |
b5de0fa7 | 4271 | b->enable_state = bp_shlib_disabled; |
c5aa993b JM |
4272 | if (!silent) |
4273 | { | |
4274 | if (!disabled_shlib_breaks) | |
4275 | { | |
4276 | target_terminal_ours_for_output (); | |
53a5351d | 4277 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4278 | } |
4279 | disabled_shlib_breaks = 1; | |
53a5351d | 4280 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4281 | } |
4282 | } | |
c906108c | 4283 | #endif |
c5aa993b | 4284 | } |
c906108c SS |
4285 | } |
4286 | ||
4287 | /* Try to reenable any breakpoints in shared libraries. */ | |
4288 | void | |
fba45db2 | 4289 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4290 | { |
4291 | struct breakpoint *b; | |
4292 | ||
4293 | ALL_BREAKPOINTS (b) | |
b5de0fa7 | 4294 | if (b->enable_state == bp_shlib_disabled) |
c5aa993b JM |
4295 | { |
4296 | char buf[1]; | |
c906108c | 4297 | |
c5aa993b JM |
4298 | /* Do not reenable the breakpoint if the shared library |
4299 | is still not mapped in. */ | |
5cab636d | 4300 | if (target_read_memory (b->loc->address, buf, 1) == 0) |
b5de0fa7 | 4301 | b->enable_state = bp_enabled; |
c5aa993b | 4302 | } |
c906108c SS |
4303 | } |
4304 | ||
4305 | #endif | |
4306 | ||
4307 | static void | |
fba45db2 KB |
4308 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4309 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4310 | { |
c5aa993b | 4311 | struct breakpoint *b; |
c906108c | 4312 | struct symtabs_and_lines sals; |
c5aa993b JM |
4313 | struct cleanup *old_chain; |
4314 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4315 | char *addr_start = hookname; |
4316 | char *addr_end = NULL; | |
4317 | char **canonical = (char **) NULL; | |
4318 | int thread = -1; /* All threads. */ | |
4319 | ||
c906108c SS |
4320 | /* Set a breakpoint on the specified hook. */ |
4321 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4322 | addr_end = hookname; | |
c5aa993b | 4323 | |
c906108c SS |
4324 | if (sals.nelts == 0) |
4325 | { | |
4326 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4327 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4328 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4329 | return; | |
4330 | } | |
4331 | if (sals.nelts != 1) | |
4332 | { | |
53a5351d | 4333 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4334 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4335 | return; | |
4336 | } | |
4337 | ||
53a5351d JM |
4338 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4339 | in case the following errors out. */ | |
b8c9b27d | 4340 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4341 | if (canonical != (char **) NULL) |
c906108c | 4342 | { |
b8c9b27d | 4343 | make_cleanup (xfree, canonical); |
c906108c SS |
4344 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4345 | if (canonical[0] != NULL) | |
b8c9b27d | 4346 | make_cleanup (xfree, canonical[0]); |
c906108c | 4347 | } |
c5aa993b | 4348 | |
c906108c | 4349 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4350 | |
c906108c | 4351 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4352 | if (canonical != (char **) NULL) |
c906108c | 4353 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4354 | |
4d28f7a8 | 4355 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4356 | set_breakpoint_count (breakpoint_count + 1); |
4357 | b->number = breakpoint_count; | |
4358 | b->cond = NULL; | |
53a5351d JM |
4359 | b->cond_string = (cond_string == NULL) ? |
4360 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4361 | b->thread = thread; |
c5aa993b JM |
4362 | |
4363 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4364 | b->addr_string = canonical[0]; |
4365 | else if (addr_start) | |
4366 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4367 | |
b5de0fa7 EZ |
4368 | b->enable_state = bp_enabled; |
4369 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4370 | |
c906108c SS |
4371 | if (dll_pathname == NULL) |
4372 | b->dll_pathname = NULL; | |
4373 | else | |
4374 | { | |
4375 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4376 | strcpy (b->dll_pathname, dll_pathname); | |
4377 | } | |
c5aa993b | 4378 | |
c906108c SS |
4379 | mention (b); |
4380 | do_cleanups (old_chain); | |
4381 | } | |
4382 | ||
4383 | void | |
fba45db2 KB |
4384 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4385 | char *dll_pathname, char *cond_string) | |
c906108c | 4386 | { |
53a5351d JM |
4387 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4388 | cond_string, bp_catch_load); | |
c906108c SS |
4389 | } |
4390 | ||
4391 | void | |
fba45db2 KB |
4392 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4393 | char *dll_pathname, char *cond_string) | |
c906108c | 4394 | { |
53a5351d JM |
4395 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4396 | cond_string, bp_catch_unload); | |
c906108c SS |
4397 | } |
4398 | ||
4399 | static void | |
fba45db2 KB |
4400 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4401 | enum bptype bp_kind) | |
c906108c | 4402 | { |
c5aa993b JM |
4403 | struct symtab_and_line sal; |
4404 | struct breakpoint *b; | |
4405 | int thread = -1; /* All threads. */ | |
4406 | ||
fe39c653 | 4407 | init_sal (&sal); |
c906108c SS |
4408 | sal.pc = 0; |
4409 | sal.symtab = NULL; | |
4410 | sal.line = 0; | |
c5aa993b | 4411 | |
4d28f7a8 | 4412 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4413 | set_breakpoint_count (breakpoint_count + 1); |
4414 | b->number = breakpoint_count; | |
4415 | b->cond = NULL; | |
53a5351d JM |
4416 | b->cond_string = (cond_string == NULL) ? |
4417 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4418 | b->thread = thread; |
4419 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4420 | b->enable_state = bp_enabled; |
4421 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4422 | b->forked_inferior_pid = 0; |
c5aa993b | 4423 | |
c906108c SS |
4424 | mention (b); |
4425 | } | |
4426 | ||
4427 | void | |
fba45db2 | 4428 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4429 | { |
4430 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4431 | } | |
c5aa993b | 4432 | |
c906108c | 4433 | void |
fba45db2 | 4434 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4435 | { |
4436 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4437 | } | |
4438 | ||
4439 | void | |
fba45db2 | 4440 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4441 | { |
c5aa993b JM |
4442 | struct symtab_and_line sal; |
4443 | struct breakpoint *b; | |
4444 | int thread = -1; /* All threads. */ | |
c906108c | 4445 | |
fe39c653 | 4446 | init_sal (&sal); |
c906108c SS |
4447 | sal.pc = 0; |
4448 | sal.symtab = NULL; | |
4449 | sal.line = 0; | |
4450 | ||
4d28f7a8 | 4451 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4452 | set_breakpoint_count (breakpoint_count + 1); |
4453 | b->number = breakpoint_count; | |
4454 | b->cond = NULL; | |
53a5351d JM |
4455 | b->cond_string = (cond_string == NULL) ? |
4456 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4457 | b->thread = thread; |
4458 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4459 | b->enable_state = bp_enabled; |
4460 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4461 | |
c906108c SS |
4462 | mention (b); |
4463 | } | |
4464 | ||
4465 | static int | |
fba45db2 | 4466 | hw_breakpoint_used_count (void) |
c906108c | 4467 | { |
52f0bd74 | 4468 | struct breakpoint *b; |
c906108c SS |
4469 | int i = 0; |
4470 | ||
4471 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4472 | { |
b5de0fa7 | 4473 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4474 | i++; |
4475 | } | |
c906108c SS |
4476 | |
4477 | return i; | |
4478 | } | |
4479 | ||
4480 | static int | |
fba45db2 | 4481 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4482 | { |
52f0bd74 | 4483 | struct breakpoint *b; |
c906108c SS |
4484 | int i = 0; |
4485 | ||
4486 | *other_type_used = 0; | |
4487 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4488 | { |
b5de0fa7 | 4489 | if (b->enable_state == bp_enabled) |
c5aa993b JM |
4490 | { |
4491 | if (b->type == type) | |
4492 | i++; | |
4493 | else if ((b->type == bp_hardware_watchpoint || | |
4494 | b->type == bp_read_watchpoint || | |
4495 | b->type == bp_access_watchpoint) | |
b5de0fa7 | 4496 | && b->enable_state == bp_enabled) |
c5aa993b JM |
4497 | *other_type_used = 1; |
4498 | } | |
4499 | } | |
c906108c SS |
4500 | return i; |
4501 | } | |
4502 | ||
53a5351d JM |
4503 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4504 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4505 | |
53a5351d JM |
4506 | FIXME - This ought to be done by setting a temporary breakpoint |
4507 | that gets deleted automatically... */ | |
c906108c SS |
4508 | |
4509 | void | |
818dd999 | 4510 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4511 | { |
52f0bd74 | 4512 | struct breakpoint *b; |
c906108c SS |
4513 | |
4514 | ALL_BREAKPOINTS (b) | |
4515 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4516 | { |
5cab636d DJ |
4517 | b->loc->requested_address = pc; |
4518 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address); | |
b5de0fa7 | 4519 | b->enable_state = bp_enabled; |
818dd999 | 4520 | b->frame_id = frame_id; |
9f60f21b | 4521 | check_duplicates (b); |
c5aa993b JM |
4522 | return; |
4523 | } | |
c906108c SS |
4524 | } |
4525 | ||
4526 | void | |
fba45db2 | 4527 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4528 | { |
c5aa993b | 4529 | struct breakpoint *b; |
c906108c SS |
4530 | |
4531 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4532 | { |
4533 | if (((b->type == bp_watchpoint) | |
4534 | || (b->type == bp_hardware_watchpoint) | |
4535 | || (b->type == bp_read_watchpoint) | |
4536 | || (b->type == bp_access_watchpoint) | |
4537 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4538 | && (b->enable_state == bp_enabled)) |
c5aa993b | 4539 | { |
b5de0fa7 | 4540 | b->enable_state = bp_call_disabled; |
9f60f21b | 4541 | check_duplicates (b); |
c5aa993b JM |
4542 | } |
4543 | } | |
c906108c SS |
4544 | } |
4545 | ||
4546 | void | |
fba45db2 | 4547 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4548 | { |
c5aa993b | 4549 | struct breakpoint *b; |
c906108c SS |
4550 | |
4551 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4552 | { |
4553 | if (((b->type == bp_watchpoint) | |
4554 | || (b->type == bp_hardware_watchpoint) | |
4555 | || (b->type == bp_read_watchpoint) | |
4556 | || (b->type == bp_access_watchpoint) | |
4557 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4558 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4559 | { |
b5de0fa7 | 4560 | b->enable_state = bp_enabled; |
9f60f21b | 4561 | check_duplicates (b); |
c5aa993b JM |
4562 | } |
4563 | } | |
c906108c SS |
4564 | } |
4565 | ||
4566 | ||
4567 | /* Set a breakpoint that will evaporate an end of command | |
4568 | at address specified by SAL. | |
4569 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4570 | ||
4571 | struct breakpoint * | |
818dd999 | 4572 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4573 | enum bptype type) |
c906108c | 4574 | { |
52f0bd74 | 4575 | struct breakpoint *b; |
4d28f7a8 | 4576 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4577 | b->enable_state = bp_enabled; |
4578 | b->disposition = disp_donttouch; | |
818dd999 | 4579 | b->frame_id = frame_id; |
c906108c SS |
4580 | |
4581 | /* If we're debugging a multi-threaded program, then we | |
4582 | want momentary breakpoints to be active in only a | |
4583 | single thread of control. */ | |
39f77062 KB |
4584 | if (in_thread_list (inferior_ptid)) |
4585 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4586 | |
4587 | return b; | |
4588 | } | |
c906108c | 4589 | \f |
c5aa993b | 4590 | |
c906108c SS |
4591 | /* Tell the user we have just set a breakpoint B. */ |
4592 | ||
4593 | static void | |
fba45db2 | 4594 | mention (struct breakpoint *b) |
c906108c SS |
4595 | { |
4596 | int say_where = 0; | |
3b31d625 | 4597 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4598 | struct ui_stream *stb; |
4599 | ||
4600 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4601 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
4602 | |
4603 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4604 | watchpoint) other than breakpoint creation. It should be possible to | |
4605 | clean this up and at the same time replace the random calls to | |
4606 | breakpoint_changed with this hook, as has already been done for | |
4607 | delete_breakpoint_hook and so on. */ | |
4608 | if (create_breakpoint_hook) | |
4609 | create_breakpoint_hook (b); | |
104c1213 | 4610 | breakpoint_create_event (b->number); |
c906108c | 4611 | |
3086aeae DJ |
4612 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4613 | b->ops->print_mention (b); | |
4614 | else | |
4615 | switch (b->type) | |
4616 | { | |
4617 | case bp_none: | |
4618 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4619 | break; | |
4620 | case bp_watchpoint: | |
4621 | ui_out_text (uiout, "Watchpoint "); | |
4622 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4623 | ui_out_field_int (uiout, "number", b->number); | |
4624 | ui_out_text (uiout, ": "); | |
4625 | print_expression (b->exp, stb->stream); | |
4626 | ui_out_field_stream (uiout, "exp", stb); | |
4627 | do_cleanups (ui_out_chain); | |
4628 | break; | |
4629 | case bp_hardware_watchpoint: | |
4630 | ui_out_text (uiout, "Hardware watchpoint "); | |
4631 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4632 | ui_out_field_int (uiout, "number", b->number); | |
4633 | ui_out_text (uiout, ": "); | |
4634 | print_expression (b->exp, stb->stream); | |
4635 | ui_out_field_stream (uiout, "exp", stb); | |
4636 | do_cleanups (ui_out_chain); | |
4637 | break; | |
4638 | case bp_read_watchpoint: | |
4639 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4640 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4641 | ui_out_field_int (uiout, "number", b->number); | |
4642 | ui_out_text (uiout, ": "); | |
4643 | print_expression (b->exp, stb->stream); | |
4644 | ui_out_field_stream (uiout, "exp", stb); | |
4645 | do_cleanups (ui_out_chain); | |
4646 | break; | |
4647 | case bp_access_watchpoint: | |
4648 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4649 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4650 | ui_out_field_int (uiout, "number", b->number); | |
4651 | ui_out_text (uiout, ": "); | |
4652 | print_expression (b->exp, stb->stream); | |
4653 | ui_out_field_stream (uiout, "exp", stb); | |
4654 | do_cleanups (ui_out_chain); | |
4655 | break; | |
4656 | case bp_breakpoint: | |
4657 | if (ui_out_is_mi_like_p (uiout)) | |
4658 | { | |
4659 | say_where = 0; | |
4660 | break; | |
4661 | } | |
4662 | printf_filtered ("Breakpoint %d", b->number); | |
4663 | say_where = 1; | |
4664 | break; | |
4665 | case bp_hardware_breakpoint: | |
4666 | if (ui_out_is_mi_like_p (uiout)) | |
4667 | { | |
4668 | say_where = 0; | |
4669 | break; | |
4670 | } | |
4671 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4672 | say_where = 1; | |
4673 | break; | |
4674 | case bp_catch_load: | |
4675 | case bp_catch_unload: | |
4676 | printf_filtered ("Catchpoint %d (%s %s)", | |
4677 | b->number, | |
4678 | (b->type == bp_catch_load) ? "load" : "unload", | |
4679 | (b->dll_pathname != NULL) ? | |
4680 | b->dll_pathname : "<any library>"); | |
4681 | break; | |
4682 | case bp_catch_fork: | |
4683 | case bp_catch_vfork: | |
4684 | printf_filtered ("Catchpoint %d (%s)", | |
4685 | b->number, | |
4686 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4687 | break; | |
4688 | case bp_catch_exec: | |
4689 | printf_filtered ("Catchpoint %d (exec)", | |
4690 | b->number); | |
4691 | break; | |
4692 | case bp_catch_catch: | |
4693 | case bp_catch_throw: | |
4694 | printf_filtered ("Catchpoint %d (%s)", | |
4695 | b->number, | |
4696 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4697 | break; | |
4698 | ||
4699 | case bp_until: | |
4700 | case bp_finish: | |
4701 | case bp_longjmp: | |
4702 | case bp_longjmp_resume: | |
4703 | case bp_step_resume: | |
4704 | case bp_through_sigtramp: | |
4705 | case bp_call_dummy: | |
4706 | case bp_watchpoint_scope: | |
4707 | case bp_shlib_event: | |
4708 | case bp_thread_event: | |
4709 | case bp_overlay_event: | |
4710 | break; | |
4711 | } | |
c906108c | 4712 | |
c906108c SS |
4713 | if (say_where) |
4714 | { | |
4715 | if (addressprint || b->source_file == NULL) | |
4716 | { | |
4717 | printf_filtered (" at "); | |
5cab636d | 4718 | print_address_numeric (b->loc->address, 1, gdb_stdout); |
c906108c SS |
4719 | } |
4720 | if (b->source_file) | |
4721 | printf_filtered (": file %s, line %d.", | |
4722 | b->source_file, b->line_number); | |
c906108c | 4723 | } |
8b93c638 | 4724 | do_cleanups (old_chain); |
9dc5e2a9 | 4725 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4726 | return; |
c906108c SS |
4727 | printf_filtered ("\n"); |
4728 | } | |
c906108c | 4729 | \f |
c5aa993b | 4730 | |
c3f6f71d JM |
4731 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4732 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4733 | COND[i] and COND_STRING[i] values. | |
4734 | ||
4735 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4736 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4737 | array contents). If the function fails (error() is called), the | |
4738 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4739 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4740 | |
4741 | static void | |
c3f6f71d JM |
4742 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4743 | struct expression **cond, char **cond_string, | |
4744 | enum bptype type, enum bpdisp disposition, | |
4745 | int thread, int ignore_count, int from_tty) | |
c906108c | 4746 | { |
c3f6f71d JM |
4747 | if (type == bp_hardware_breakpoint) |
4748 | { | |
4749 | int i = hw_breakpoint_used_count (); | |
4750 | int target_resources_ok = | |
4751 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4752 | i + sals.nelts, 0); | |
4753 | if (target_resources_ok == 0) | |
4754 | error ("No hardware breakpoint support in the target."); | |
4755 | else if (target_resources_ok < 0) | |
4756 | error ("Hardware breakpoints used exceeds limit."); | |
4757 | } | |
c906108c | 4758 | |
c3f6f71d JM |
4759 | /* Now set all the breakpoints. */ |
4760 | { | |
4761 | int i; | |
4762 | for (i = 0; i < sals.nelts; i++) | |
4763 | { | |
4764 | struct breakpoint *b; | |
4765 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4766 | |
c3f6f71d JM |
4767 | if (from_tty) |
4768 | describe_other_breakpoints (sal.pc, sal.section); | |
4769 | ||
4d28f7a8 | 4770 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4771 | set_breakpoint_count (breakpoint_count + 1); |
4772 | b->number = breakpoint_count; | |
c3f6f71d JM |
4773 | b->cond = cond[i]; |
4774 | b->thread = thread; | |
d8ef46f5 DJ |
4775 | if (addr_string[i]) |
4776 | b->addr_string = addr_string[i]; | |
4777 | else | |
4778 | /* addr_string has to be used or breakpoint_re_set will delete | |
4779 | me. */ | |
5cab636d | 4780 | xasprintf (&b->addr_string, "*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4781 | b->cond_string = cond_string[i]; |
4782 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4783 | b->enable_state = bp_enabled; |
c3f6f71d JM |
4784 | b->disposition = disposition; |
4785 | mention (b); | |
4786 | } | |
4787 | } | |
4788 | } | |
c906108c | 4789 | |
c3f6f71d JM |
4790 | /* Parse ARG which is assumed to be a SAL specification possibly |
4791 | followed by conditionals. On return, SALS contains an array of SAL | |
4792 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4793 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4794 | |
b9362cc7 | 4795 | static void |
c3f6f71d JM |
4796 | parse_breakpoint_sals (char **address, |
4797 | struct symtabs_and_lines *sals, | |
4798 | char ***addr_string) | |
4799 | { | |
4800 | char *addr_start = *address; | |
4801 | *addr_string = NULL; | |
4802 | /* If no arg given, or if first arg is 'if ', use the default | |
4803 | breakpoint. */ | |
4804 | if ((*address) == NULL | |
4805 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4806 | { |
4807 | if (default_breakpoint_valid) | |
4808 | { | |
c3f6f71d | 4809 | struct symtab_and_line sal; |
fe39c653 | 4810 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4811 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4812 | xmalloc (sizeof (struct symtab_and_line)); |
4813 | sal.pc = default_breakpoint_address; | |
4814 | sal.line = default_breakpoint_line; | |
4815 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4816 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4817 | sals->sals[0] = sal; |
4818 | sals->nelts = 1; | |
c906108c SS |
4819 | } |
4820 | else | |
4821 | error ("No default breakpoint address now."); | |
4822 | } | |
4823 | else | |
4824 | { | |
c906108c | 4825 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4826 | current_source_symtab (which is decode_line_1's default). This |
4827 | should produce the results we want almost all of the time while | |
1aeae86e AF |
4828 | leaving default_breakpoint_* alone. |
4829 | ObjC: However, don't match an Objective-C method name which | |
4830 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 4831 | |
c214a6fd | 4832 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 4833 | |
c906108c | 4834 | if (default_breakpoint_valid |
0378c332 | 4835 | && (!cursal.symtab |
1aeae86e AF |
4836 | || ((strchr ("+-", (*address)[0]) != NULL) |
4837 | && ((*address)[1] != '[')))) | |
c3f6f71d JM |
4838 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
4839 | default_breakpoint_line, addr_string); | |
c906108c | 4840 | else |
389e51db | 4841 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4842 | } |
c3f6f71d JM |
4843 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4844 | if (sals->nelts > 0 && *addr_string == NULL) | |
4845 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4846 | if (addr_start != (*address)) | |
c906108c | 4847 | { |
c3f6f71d JM |
4848 | int i; |
4849 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4850 | { |
c3f6f71d JM |
4851 | /* Add the string if not present. */ |
4852 | if ((*addr_string)[i] == NULL) | |
4853 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4854 | } |
4855 | } | |
c3f6f71d | 4856 | } |
c906108c | 4857 | |
c906108c | 4858 | |
c3f6f71d JM |
4859 | /* Convert each SAL into a real PC. Verify that the PC can be |
4860 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4861 | |
b9362cc7 | 4862 | static void |
c3f6f71d JM |
4863 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
4864 | char *address) | |
4865 | { | |
4866 | int i; | |
4867 | for (i = 0; i < sals->nelts; i++) | |
4868 | { | |
4869 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4870 | |
4871 | /* It's possible for the PC to be nonzero, but still an illegal | |
4872 | value on some targets. | |
4873 | ||
4874 | For example, on HP-UX if you start gdb, and before running the | |
4875 | inferior you try to set a breakpoint on a shared library function | |
4876 | "foo" where the inferior doesn't call "foo" directly but does | |
4877 | pass its address to another function call, then we do find a | |
4878 | minimal symbol for the "foo", but it's address is invalid. | |
4879 | (Appears to be an index into a table that the loader sets up | |
4880 | when the inferior is run.) | |
4881 | ||
4882 | Give the target a chance to bless sals.sals[i].pc before we | |
4883 | try to make a breakpoint for it. */ | |
c3f6f71d | 4884 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4885 | { |
c3f6f71d JM |
4886 | if (address == NULL) |
4887 | error ("Cannot break without a running program."); | |
4888 | else | |
4889 | error ("Cannot break on %s without a running program.", | |
4890 | address); | |
c5aa993b | 4891 | } |
c3f6f71d JM |
4892 | } |
4893 | } | |
4894 | ||
4895 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4896 | flag: first bit : 0 non-temporary, 1 temporary. | |
4897 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4898 | |
c3f6f71d | 4899 | static void |
fba45db2 | 4900 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4901 | { |
4902 | int tempflag, hardwareflag; | |
4903 | struct symtabs_and_lines sals; | |
52f0bd74 | 4904 | struct expression **cond = 0; |
c3f6f71d JM |
4905 | /* Pointers in arg to the start, and one past the end, of the |
4906 | condition. */ | |
4907 | char **cond_string = (char **) NULL; | |
4908 | char *addr_start = arg; | |
4909 | char **addr_string; | |
4910 | struct cleanup *old_chain; | |
4911 | struct cleanup *breakpoint_chain = NULL; | |
4912 | int i; | |
4913 | int thread = -1; | |
4914 | int ignore_count = 0; | |
4915 | ||
4916 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4917 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4918 | |
c3f6f71d JM |
4919 | sals.sals = NULL; |
4920 | sals.nelts = 0; | |
4921 | addr_string = NULL; | |
4922 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4923 | ||
4924 | if (!sals.nelts) | |
4925 | return; | |
4926 | ||
4927 | /* Create a chain of things that always need to be cleaned up. */ | |
4928 | old_chain = make_cleanup (null_cleanup, 0); | |
4929 | ||
4930 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4931 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4932 | |
4933 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4934 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4935 | |
4936 | /* Allocate space for all the cond expressions. */ | |
4937 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4938 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4939 | |
4940 | /* Allocate space for all the cond strings. */ | |
4941 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4942 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4943 | |
4944 | /* ----------------------------- SNIP ----------------------------- | |
4945 | Anything added to the cleanup chain beyond this point is assumed | |
4946 | to be part of a breakpoint. If the breakpoint create succeeds | |
4947 | then the memory is not reclaimed. */ | |
4948 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4949 | ||
4950 | /* Mark the contents of the addr_string for cleanup. These go on | |
4951 | the breakpoint_chain and only occure if the breakpoint create | |
4952 | fails. */ | |
4953 | for (i = 0; i < sals.nelts; i++) | |
4954 | { | |
4955 | if (addr_string[i] != NULL) | |
b8c9b27d | 4956 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4957 | } |
4958 | ||
4959 | /* Resolve all line numbers to PC's and verify that the addresses | |
4960 | are ok for the target. */ | |
4961 | breakpoint_sals_to_pc (&sals, addr_start); | |
4962 | ||
4963 | /* Verify that condition can be parsed, before setting any | |
4964 | breakpoints. Allocate a separate condition expression for each | |
4965 | breakpoint. */ | |
4966 | thread = -1; /* No specific thread yet */ | |
4967 | for (i = 0; i < sals.nelts; i++) | |
4968 | { | |
4969 | char *tok = arg; | |
c906108c SS |
4970 | while (tok && *tok) |
4971 | { | |
c3f6f71d JM |
4972 | char *end_tok; |
4973 | int toklen; | |
4974 | char *cond_start = NULL; | |
4975 | char *cond_end = NULL; | |
c906108c SS |
4976 | while (*tok == ' ' || *tok == '\t') |
4977 | tok++; | |
4978 | ||
4979 | end_tok = tok; | |
4980 | ||
4981 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4982 | end_tok++; | |
4983 | ||
4984 | toklen = end_tok - tok; | |
4985 | ||
4986 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4987 | { | |
4988 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4989 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4990 | make_cleanup (xfree, cond[i]); |
c906108c | 4991 | cond_end = tok; |
c3f6f71d | 4992 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4993 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4994 | } |
4995 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4996 | { | |
4997 | char *tmptok; | |
4998 | ||
4999 | tok = end_tok + 1; | |
5000 | tmptok = tok; | |
5001 | thread = strtol (tok, &tok, 0); | |
5002 | if (tok == tmptok) | |
5003 | error ("Junk after thread keyword."); | |
5004 | if (!valid_thread_id (thread)) | |
5005 | error ("Unknown thread %d\n", thread); | |
5006 | } | |
5007 | else | |
5008 | error ("Junk at end of arguments."); | |
5009 | } | |
5010 | } | |
c906108c | 5011 | |
c3f6f71d JM |
5012 | create_breakpoints (sals, addr_string, cond, cond_string, |
5013 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5014 | tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
5015 | thread, ignore_count, from_tty); |
5016 | ||
5017 | if (sals.nelts > 1) | |
5018 | { | |
5019 | warning ("Multiple breakpoints were set."); | |
5020 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5021 | } |
c3f6f71d JM |
5022 | /* That's it. Discard the cleanups for data inserted into the |
5023 | breakpoint. */ | |
5024 | discard_cleanups (breakpoint_chain); | |
5025 | /* But cleanup everything else. */ | |
5026 | do_cleanups (old_chain); | |
5027 | } | |
c906108c | 5028 | |
c3f6f71d JM |
5029 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5030 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5031 | |
c3f6f71d JM |
5032 | struct captured_breakpoint_args |
5033 | { | |
5034 | char *address; | |
5035 | char *condition; | |
5036 | int hardwareflag; | |
5037 | int tempflag; | |
5038 | int thread; | |
5039 | int ignore_count; | |
5040 | }; | |
5041 | ||
5042 | static int | |
5043 | do_captured_breakpoint (void *data) | |
5044 | { | |
5045 | struct captured_breakpoint_args *args = data; | |
5046 | struct symtabs_and_lines sals; | |
52f0bd74 | 5047 | struct expression **cond; |
c3f6f71d JM |
5048 | struct cleanup *old_chain; |
5049 | struct cleanup *breakpoint_chain = NULL; | |
5050 | int i; | |
5051 | char **addr_string; | |
5052 | char **cond_string; | |
5053 | ||
5054 | char *address_end; | |
5055 | ||
5056 | /* Parse the source and lines spec. Delay check that the expression | |
5057 | didn't contain trailing garbage until after cleanups are in | |
5058 | place. */ | |
5059 | sals.sals = NULL; | |
5060 | sals.nelts = 0; | |
5061 | address_end = args->address; | |
5062 | addr_string = NULL; | |
5063 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
5064 | ||
5065 | if (!sals.nelts) | |
5066 | return GDB_RC_NONE; | |
5067 | ||
5068 | /* Create a chain of things at always need to be cleaned up. */ | |
5069 | old_chain = make_cleanup (null_cleanup, 0); | |
5070 | ||
5071 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5072 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5073 | |
5074 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5075 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5076 | |
5077 | /* Allocate space for all the cond expressions. */ | |
5078 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5079 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5080 | |
5081 | /* Allocate space for all the cond strings. */ | |
5082 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5083 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5084 | |
5085 | /* ----------------------------- SNIP ----------------------------- | |
5086 | Anything added to the cleanup chain beyond this point is assumed | |
5087 | to be part of a breakpoint. If the breakpoint create goes | |
5088 | through then that memory is not cleaned up. */ | |
5089 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5090 | ||
5091 | /* Mark the contents of the addr_string for cleanup. These go on | |
5092 | the breakpoint_chain and only occure if the breakpoint create | |
5093 | fails. */ | |
c906108c SS |
5094 | for (i = 0; i < sals.nelts; i++) |
5095 | { | |
c3f6f71d | 5096 | if (addr_string[i] != NULL) |
b8c9b27d | 5097 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5098 | } |
5099 | ||
c3f6f71d JM |
5100 | /* Wait until now before checking for garbage at the end of the |
5101 | address. That way cleanups can take care of freeing any | |
5102 | memory. */ | |
5103 | if (*address_end != '\0') | |
5104 | error ("Garbage %s following breakpoint address", address_end); | |
5105 | ||
5106 | /* Resolve all line numbers to PC's. */ | |
5107 | breakpoint_sals_to_pc (&sals, args->address); | |
5108 | ||
5109 | /* Verify that conditions can be parsed, before setting any | |
5110 | breakpoints. */ | |
5111 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5112 | { |
c3f6f71d JM |
5113 | if (args->condition != NULL) |
5114 | { | |
5115 | char *tok = args->condition; | |
5116 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5117 | if (*tok != '\0') | |
5118 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5119 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5120 | cond_string[i] = xstrdup (args->condition); |
5121 | } | |
c906108c | 5122 | } |
c3f6f71d JM |
5123 | |
5124 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5125 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5126 | args->tempflag ? disp_del : disp_donttouch, |
c3f6f71d JM |
5127 | args->thread, args->ignore_count, 0/*from-tty*/); |
5128 | ||
5129 | /* That's it. Discard the cleanups for data inserted into the | |
5130 | breakpoint. */ | |
5131 | discard_cleanups (breakpoint_chain); | |
5132 | /* But cleanup everything else. */ | |
c906108c | 5133 | do_cleanups (old_chain); |
c3f6f71d | 5134 | return GDB_RC_OK; |
c906108c SS |
5135 | } |
5136 | ||
c3f6f71d JM |
5137 | enum gdb_rc |
5138 | gdb_breakpoint (char *address, char *condition, | |
5139 | int hardwareflag, int tempflag, | |
5140 | int thread, int ignore_count) | |
5141 | { | |
5142 | struct captured_breakpoint_args args; | |
5143 | args.address = address; | |
5144 | args.condition = condition; | |
5145 | args.hardwareflag = hardwareflag; | |
5146 | args.tempflag = tempflag; | |
5147 | args.thread = thread; | |
5148 | args.ignore_count = ignore_count; | |
5149 | return catch_errors (do_captured_breakpoint, &args, | |
5150 | NULL, RETURN_MASK_ALL); | |
5151 | } | |
5152 | ||
5153 | ||
c906108c | 5154 | static void |
fba45db2 | 5155 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5156 | { |
5157 | struct frame_info *frame; | |
5158 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
5159 | char *extra_args = NULL; |
5160 | char *level_arg; | |
c906108c SS |
5161 | int extra_args_len = 0, if_arg = 0; |
5162 | ||
5163 | if (!arg || | |
5164 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5165 | { | |
5166 | ||
5167 | if (default_breakpoint_valid) | |
5168 | { | |
6e7f8b9c | 5169 | if (deprecated_selected_frame) |
c906108c | 5170 | { |
bdd78e62 | 5171 | selected_pc = get_frame_pc (deprecated_selected_frame); |
c906108c SS |
5172 | if (arg) |
5173 | if_arg = 1; | |
5174 | } | |
5175 | else | |
5176 | error ("No selected frame."); | |
5177 | } | |
5178 | else | |
5179 | error ("No default breakpoint address now."); | |
5180 | } | |
5181 | else | |
5182 | { | |
5183 | extra_args = strchr (arg, ' '); | |
5184 | if (extra_args) | |
5185 | { | |
5186 | extra_args++; | |
5187 | extra_args_len = strlen (extra_args); | |
5188 | level_arg = (char *) xmalloc (extra_args - arg); | |
5189 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5190 | level_arg[extra_args - arg - 1] = '\0'; | |
5191 | } | |
5192 | else | |
5193 | { | |
5194 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5195 | strcpy (level_arg, arg); | |
5196 | } | |
5197 | ||
5198 | frame = parse_frame_specification (level_arg); | |
5199 | if (frame) | |
bdd78e62 | 5200 | selected_pc = get_frame_pc (frame); |
c906108c SS |
5201 | else |
5202 | selected_pc = 0; | |
5203 | } | |
5204 | if (if_arg) | |
5205 | { | |
5206 | extra_args = arg; | |
c5aa993b | 5207 | extra_args_len = strlen (arg); |
c906108c SS |
5208 | } |
5209 | ||
5210 | if (selected_pc) | |
5211 | { | |
c5aa993b | 5212 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c | 5213 | { |
9ebf4acf | 5214 | char *addr_string; |
c906108c | 5215 | if (extra_args_len) |
9ebf4acf | 5216 | addr_string = xstrprintf ("*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5217 | else |
9ebf4acf | 5218 | addr_string = xstrprintf ("*0x%s", paddr_nz (high)); |
c906108c | 5219 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5220 | xfree (addr_string); |
c906108c SS |
5221 | } |
5222 | else | |
5223 | error ("No function contains the specified address"); | |
5224 | } | |
5225 | else | |
5226 | error ("Unable to set breakpoint at procedure exit"); | |
5227 | } | |
5228 | ||
5229 | ||
5230 | static void | |
fba45db2 | 5231 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5232 | { |
5233 | char *addr_string, *break_string, *beg_addr_string; | |
5234 | CORE_ADDR low, high; | |
5235 | struct symtabs_and_lines sals; | |
5236 | struct symtab_and_line sal; | |
5237 | struct cleanup *old_chain; | |
7f7e9482 | 5238 | char *extra_args = NULL; |
c906108c SS |
5239 | int extra_args_len = 0; |
5240 | int i, if_arg = 0; | |
5241 | ||
5242 | if (!arg || | |
5243 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5244 | { | |
5245 | if (default_breakpoint_valid) | |
5246 | { | |
6e7f8b9c | 5247 | if (deprecated_selected_frame) |
c906108c | 5248 | { |
9ebf4acf AC |
5249 | addr_string = xstrprintf ("*0x%s", |
5250 | paddr_nz (get_frame_pc (deprecated_selected_frame))); | |
c906108c SS |
5251 | if (arg) |
5252 | if_arg = 1; | |
5253 | } | |
5254 | else | |
5255 | error ("No selected frame."); | |
5256 | } | |
5257 | else | |
5258 | error ("No default breakpoint address now."); | |
5259 | } | |
5260 | else | |
5261 | { | |
5262 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5263 | strcpy (addr_string, arg); | |
5264 | } | |
5265 | ||
5266 | if (if_arg) | |
5267 | { | |
5268 | extra_args = arg; | |
c5aa993b JM |
5269 | extra_args_len = strlen (arg); |
5270 | } | |
5271 | else if (arg) | |
5272 | { | |
5273 | /* get the stuff after the function name or address */ | |
5274 | extra_args = strchr (arg, ' '); | |
5275 | if (extra_args) | |
5276 | { | |
5277 | extra_args++; | |
5278 | extra_args_len = strlen (extra_args); | |
5279 | } | |
c906108c | 5280 | } |
c906108c SS |
5281 | |
5282 | sals.sals = NULL; | |
5283 | sals.nelts = 0; | |
5284 | ||
c5aa993b JM |
5285 | beg_addr_string = addr_string; |
5286 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5287 | (char ***) NULL); | |
c906108c | 5288 | |
b8c9b27d KB |
5289 | xfree (beg_addr_string); |
5290 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5291 | for (i = 0; (i < sals.nelts); i++) |
5292 | { | |
5293 | sal = sals.sals[i]; | |
c5aa993b | 5294 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c | 5295 | { |
9ebf4acf | 5296 | break_string; |
c906108c | 5297 | if (extra_args_len) |
9ebf4acf AC |
5298 | break_string = xstrprintf ("*0x%s %s", paddr_nz (high), |
5299 | extra_args); | |
c906108c | 5300 | else |
9ebf4acf | 5301 | break_string = xstrprintf ("*0x%s", paddr_nz (high)); |
c906108c | 5302 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5303 | xfree (break_string); |
c906108c SS |
5304 | } |
5305 | else | |
5306 | error ("No function contains the specified address"); | |
5307 | } | |
5308 | if (sals.nelts > 1) | |
5309 | { | |
53a5351d JM |
5310 | warning ("Multiple breakpoints were set.\n"); |
5311 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5312 | } |
c5aa993b | 5313 | do_cleanups (old_chain); |
c906108c SS |
5314 | } |
5315 | ||
5316 | ||
5317 | /* Helper function for break_command_1 and disassemble_command. */ | |
5318 | ||
5319 | void | |
fba45db2 | 5320 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5321 | { |
5322 | CORE_ADDR pc; | |
5323 | ||
5324 | if (sal->pc == 0 && sal->symtab != NULL) | |
5325 | { | |
5326 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5327 | error ("No line %d in file \"%s\".", | |
5328 | sal->line, sal->symtab->filename); | |
5329 | sal->pc = pc; | |
5330 | } | |
5331 | ||
5332 | if (sal->section == 0 && sal->symtab != NULL) | |
5333 | { | |
5334 | struct blockvector *bv; | |
c5aa993b JM |
5335 | struct block *b; |
5336 | struct symbol *sym; | |
5337 | int index; | |
c906108c | 5338 | |
c5aa993b | 5339 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5340 | if (bv != NULL) |
5341 | { | |
c5aa993b | 5342 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5343 | sym = block_function (b); |
5344 | if (sym != NULL) | |
5345 | { | |
5346 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5347 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5348 | } | |
5349 | else | |
5350 | { | |
5351 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5352 | have to look harder. This case can be executed if we have |
5353 | line numbers but no functions (as can happen in assembly | |
5354 | source). */ | |
c906108c | 5355 | |
c5aa993b | 5356 | struct minimal_symbol *msym; |
c906108c SS |
5357 | |
5358 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5359 | if (msym) | |
5360 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5361 | } | |
5362 | } | |
5363 | } | |
5364 | } | |
5365 | ||
5366 | void | |
fba45db2 | 5367 | break_command (char *arg, int from_tty) |
c906108c SS |
5368 | { |
5369 | break_command_1 (arg, 0, from_tty); | |
5370 | } | |
5371 | ||
502fd408 | 5372 | void |
fba45db2 | 5373 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5374 | { |
5375 | break_at_finish_command_1 (arg, 0, from_tty); | |
5376 | } | |
5377 | ||
502fd408 | 5378 | void |
fba45db2 | 5379 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5380 | { |
5381 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5382 | } | |
5383 | ||
5384 | void | |
fba45db2 | 5385 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5386 | { |
5387 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5388 | } | |
5389 | ||
502fd408 | 5390 | void |
fba45db2 | 5391 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5392 | { |
5393 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5394 | } | |
5395 | ||
5396 | static void | |
fba45db2 | 5397 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5398 | { |
5399 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5400 | } | |
5401 | ||
5402 | static void | |
fba45db2 | 5403 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5404 | { |
5405 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5406 | } | |
5407 | ||
5408 | static void | |
fba45db2 | 5409 | stop_command (char *arg, int from_tty) |
c906108c SS |
5410 | { |
5411 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5412 | Usage: stop in <function | address>\n\ | |
5413 | stop at <line>\n"); | |
5414 | } | |
5415 | ||
5416 | static void | |
fba45db2 | 5417 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5418 | { |
5419 | int badInput = 0; | |
5420 | ||
c5aa993b | 5421 | if (arg == (char *) NULL) |
c906108c SS |
5422 | badInput = 1; |
5423 | else if (*arg != '*') | |
5424 | { | |
5425 | char *argptr = arg; | |
5426 | int hasColon = 0; | |
5427 | ||
53a5351d JM |
5428 | /* look for a ':'. If this is a line number specification, then |
5429 | say it is bad, otherwise, it should be an address or | |
5430 | function/method name */ | |
c906108c | 5431 | while (*argptr && !hasColon) |
c5aa993b JM |
5432 | { |
5433 | hasColon = (*argptr == ':'); | |
5434 | argptr++; | |
5435 | } | |
c906108c SS |
5436 | |
5437 | if (hasColon) | |
c5aa993b | 5438 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5439 | else |
c5aa993b | 5440 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5441 | } |
5442 | ||
5443 | if (badInput) | |
c5aa993b | 5444 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5445 | else |
5446 | break_command_1 (arg, 0, from_tty); | |
5447 | } | |
5448 | ||
5449 | static void | |
fba45db2 | 5450 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5451 | { |
5452 | int badInput = 0; | |
5453 | ||
c5aa993b | 5454 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5455 | badInput = 1; |
5456 | else | |
5457 | { | |
5458 | char *argptr = arg; | |
5459 | int hasColon = 0; | |
5460 | ||
5461 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5462 | it is probably a line number. */ |
c906108c | 5463 | while (*argptr && !hasColon) |
c5aa993b JM |
5464 | { |
5465 | hasColon = (*argptr == ':'); | |
5466 | argptr++; | |
5467 | } | |
c906108c SS |
5468 | |
5469 | if (hasColon) | |
c5aa993b | 5470 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5471 | else |
c5aa993b | 5472 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5473 | } |
5474 | ||
5475 | if (badInput) | |
c5aa993b | 5476 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5477 | else |
5478 | break_command_1 (arg, 0, from_tty); | |
5479 | } | |
5480 | ||
53a5351d JM |
5481 | /* accessflag: hw_write: watch write, |
5482 | hw_read: watch read, | |
5483 | hw_access: watch access (read or write) */ | |
c906108c | 5484 | static void |
fba45db2 | 5485 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5486 | { |
5487 | struct breakpoint *b; | |
5488 | struct symtab_and_line sal; | |
5489 | struct expression *exp; | |
5490 | struct block *exp_valid_block; | |
5491 | struct value *val, *mark; | |
5492 | struct frame_info *frame; | |
5493 | struct frame_info *prev_frame = NULL; | |
5494 | char *exp_start = NULL; | |
5495 | char *exp_end = NULL; | |
5496 | char *tok, *end_tok; | |
5497 | int toklen; | |
5498 | char *cond_start = NULL; | |
5499 | char *cond_end = NULL; | |
5500 | struct expression *cond = NULL; | |
5501 | int i, other_type_used, target_resources_ok = 0; | |
5502 | enum bptype bp_type; | |
5503 | int mem_cnt = 0; | |
5504 | ||
fe39c653 | 5505 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5506 | |
c906108c SS |
5507 | /* Parse arguments. */ |
5508 | innermost_block = NULL; | |
5509 | exp_start = arg; | |
5510 | exp = parse_exp_1 (&arg, 0, 0); | |
5511 | exp_end = arg; | |
5512 | exp_valid_block = innermost_block; | |
5513 | mark = value_mark (); | |
5514 | val = evaluate_expression (exp); | |
5515 | release_value (val); | |
5516 | if (VALUE_LAZY (val)) | |
5517 | value_fetch_lazy (val); | |
5518 | ||
5519 | tok = arg; | |
5520 | while (*tok == ' ' || *tok == '\t') | |
5521 | tok++; | |
5522 | end_tok = tok; | |
5523 | ||
5524 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5525 | end_tok++; | |
5526 | ||
5527 | toklen = end_tok - tok; | |
5528 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5529 | { | |
5530 | tok = cond_start = end_tok + 1; | |
5531 | cond = parse_exp_1 (&tok, 0, 0); | |
5532 | cond_end = tok; | |
5533 | } | |
5534 | if (*tok) | |
c5aa993b | 5535 | error ("Junk at end of command."); |
c906108c | 5536 | |
53a5351d | 5537 | if (accessflag == hw_read) |
c5aa993b | 5538 | bp_type = bp_read_watchpoint; |
53a5351d | 5539 | else if (accessflag == hw_access) |
c5aa993b JM |
5540 | bp_type = bp_access_watchpoint; |
5541 | else | |
5542 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5543 | |
5544 | mem_cnt = can_use_hardware_watchpoint (val); | |
5545 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5546 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5547 | if (mem_cnt != 0) |
5548 | { | |
5549 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5550 | target_resources_ok = |
5551 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5552 | other_type_used); | |
c5aa993b | 5553 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5554 | error ("Target does not support this type of hardware watchpoint."); |
5555 | ||
c5aa993b | 5556 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5557 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5558 | } |
c906108c SS |
5559 | |
5560 | #if defined(HPUXHPPA) | |
c5aa993b | 5561 | /* On HP-UX if you set a h/w |
c906108c SS |
5562 | watchpoint before the "run" command, the inferior dies with a e.g., |
5563 | SIGILL once you start it. I initially believed this was due to a | |
5564 | bad interaction between page protection traps and the initial | |
5565 | startup sequence by the dynamic linker. | |
5566 | ||
5567 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5568 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5569 | yet, which forced slow watches before a "run" or "attach", and it |
5570 | still fails somewhere in the startup code. | |
5571 | ||
5572 | Until I figure out what's happening, I'm disallowing watches altogether | |
5573 | before the "run" or "attach" command. We'll tell the user they must | |
5574 | set watches after getting the program started. */ | |
c5aa993b | 5575 | if (!target_has_execution) |
c906108c SS |
5576 | { |
5577 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5578 | return; | |
5579 | } | |
5580 | #endif /* HPUXHPPA */ | |
c5aa993b | 5581 | |
4d28f7a8 KB |
5582 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5583 | watchpoint could not be set. */ | |
5584 | if (!mem_cnt || target_resources_ok <= 0) | |
5585 | bp_type = bp_watchpoint; | |
5586 | ||
c906108c | 5587 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5588 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5589 | set_breakpoint_count (breakpoint_count + 1); |
5590 | b->number = breakpoint_count; | |
b5de0fa7 | 5591 | b->disposition = disp_donttouch; |
c906108c SS |
5592 | b->exp = exp; |
5593 | b->exp_valid_block = exp_valid_block; | |
5594 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5595 | b->val = val; | |
5596 | b->cond = cond; | |
5597 | if (cond_start) | |
5598 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5599 | else | |
5600 | b->cond_string = 0; | |
c5aa993b | 5601 | |
c906108c SS |
5602 | frame = block_innermost_frame (exp_valid_block); |
5603 | if (frame) | |
5604 | { | |
5605 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5606 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5607 | } |
5608 | else | |
101dcfbe AC |
5609 | { |
5610 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5611 | } | |
c906108c | 5612 | |
c906108c SS |
5613 | /* If the expression is "local", then set up a "watchpoint scope" |
5614 | breakpoint at the point where we've left the scope of the watchpoint | |
5615 | expression. */ | |
5616 | if (innermost_block) | |
5617 | { | |
5618 | if (prev_frame) | |
5619 | { | |
5620 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5621 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5622 | bp_watchpoint_scope); | |
c906108c | 5623 | |
b5de0fa7 | 5624 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5625 | |
5626 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5627 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5628 | |
5629 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5630 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5631 | |
5632 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5633 | scope_breakpoint->loc->requested_address |
5634 | = get_frame_pc (prev_frame); | |
5635 | scope_breakpoint->loc->address | |
5636 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address); | |
c906108c SS |
5637 | |
5638 | /* The scope breakpoint is related to the watchpoint. We | |
5639 | will need to act on them together. */ | |
5640 | b->related_breakpoint = scope_breakpoint; | |
5641 | } | |
5642 | } | |
5643 | value_free_to_mark (mark); | |
5644 | mention (b); | |
5645 | } | |
5646 | ||
5647 | /* Return count of locations need to be watched and can be handled | |
5648 | in hardware. If the watchpoint can not be handled | |
5649 | in hardware return zero. */ | |
5650 | ||
5651 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d | 5652 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
b1e29e33 | 5653 | ((BYTE_SIZE) <= (DEPRECATED_REGISTER_SIZE)) |
53a5351d JM |
5654 | #endif |
5655 | ||
5656 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5657 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5658 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5659 | #endif |
5660 | ||
5661 | static int | |
fba45db2 | 5662 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5663 | { |
5664 | int found_memory_cnt = 0; | |
2e70b7b9 | 5665 | struct value *head = v; |
c906108c SS |
5666 | |
5667 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5668 | if (!can_use_hw_watchpoints) |
c906108c | 5669 | return 0; |
c5aa993b | 5670 | |
5c44784c JM |
5671 | /* Make sure that the value of the expression depends only upon |
5672 | memory contents, and values computed from them within GDB. If we | |
5673 | find any register references or function calls, we can't use a | |
5674 | hardware watchpoint. | |
5675 | ||
5676 | The idea here is that evaluating an expression generates a series | |
5677 | of values, one holding the value of every subexpression. (The | |
5678 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5679 | a*b+c.) GDB's values hold almost enough information to establish | |
5680 | the criteria given above --- they identify memory lvalues, | |
5681 | register lvalues, computed values, etcetera. So we can evaluate | |
5682 | the expression, and then scan the chain of values that leaves | |
5683 | behind to decide whether we can detect any possible change to the | |
5684 | expression's final value using only hardware watchpoints. | |
5685 | ||
5686 | However, I don't think that the values returned by inferior | |
5687 | function calls are special in any way. So this function may not | |
5688 | notice that an expression involving an inferior function call | |
5689 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5690 | for (; v; v = v->next) |
c906108c | 5691 | { |
5c44784c | 5692 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5693 | { |
5c44784c JM |
5694 | if (VALUE_LAZY (v)) |
5695 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5696 | we either just used its address (e.g., `a' in `a.b') or | |
5697 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5698 | ; | |
53a5351d | 5699 | else |
5c44784c JM |
5700 | { |
5701 | /* Ahh, memory we actually used! Check if we can cover | |
5702 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5703 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5704 | ||
5705 | /* We only watch structs and arrays if user asked for it | |
5706 | explicitly, never if they just happen to appear in a | |
5707 | middle of some value chain. */ | |
5708 | if (v == head | |
5709 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5710 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5711 | { | |
5712 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5713 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5714 | ||
5715 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5716 | return 0; | |
5717 | else | |
5718 | found_memory_cnt++; | |
5719 | } | |
5c44784c | 5720 | } |
c5aa993b | 5721 | } |
c906108c | 5722 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5723 | return 0; /* ??? What does this represent? */ |
5724 | else if (v->lval == lval_register) | |
5725 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5726 | } |
5727 | ||
5728 | /* The expression itself looks suitable for using a hardware | |
5729 | watchpoint, but give the target machine a chance to reject it. */ | |
5730 | return found_memory_cnt; | |
5731 | } | |
5732 | ||
8b93c638 | 5733 | void |
fba45db2 | 5734 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5735 | { |
5736 | watch_command (arg, from_tty); | |
5737 | } | |
8926118c | 5738 | |
c5aa993b | 5739 | static void |
fba45db2 | 5740 | watch_command (char *arg, int from_tty) |
c906108c | 5741 | { |
53a5351d | 5742 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5743 | } |
5744 | ||
8b93c638 | 5745 | void |
fba45db2 | 5746 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5747 | { |
5748 | rwatch_command (arg, from_tty); | |
5749 | } | |
8926118c | 5750 | |
c5aa993b | 5751 | static void |
fba45db2 | 5752 | rwatch_command (char *arg, int from_tty) |
c906108c | 5753 | { |
53a5351d | 5754 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5755 | } |
5756 | ||
8b93c638 | 5757 | void |
fba45db2 | 5758 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5759 | { |
5760 | awatch_command (arg, from_tty); | |
5761 | } | |
8926118c | 5762 | |
c5aa993b | 5763 | static void |
fba45db2 | 5764 | awatch_command (char *arg, int from_tty) |
c906108c | 5765 | { |
53a5351d | 5766 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5767 | } |
c906108c | 5768 | \f |
c5aa993b | 5769 | |
43ff13b4 | 5770 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5771 | because it uses the mechanisms of breakpoints. */ |
5772 | ||
43ff13b4 JM |
5773 | /* This function is called by fetch_inferior_event via the |
5774 | cmd_continuation pointer, to complete the until command. It takes | |
5775 | care of cleaning up the temporary breakpoints set up by the until | |
5776 | command. */ | |
c2c6d25f JM |
5777 | static void |
5778 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5779 | { |
0d06e24b JM |
5780 | struct cleanup *cleanups; |
5781 | ||
57e687d9 | 5782 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5783 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5784 | } |
5785 | ||
c906108c | 5786 | void |
ae66c1fc | 5787 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5788 | { |
5789 | struct symtabs_and_lines sals; | |
5790 | struct symtab_and_line sal; | |
6e7f8b9c | 5791 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5792 | struct breakpoint *breakpoint; |
5793 | struct cleanup *old_chain; | |
0d06e24b JM |
5794 | struct continuation_arg *arg1; |
5795 | ||
c906108c SS |
5796 | |
5797 | clear_proceed_status (); | |
5798 | ||
5799 | /* Set a breakpoint where the user wants it and at return from | |
5800 | this function */ | |
c5aa993b | 5801 | |
c906108c SS |
5802 | if (default_breakpoint_valid) |
5803 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5804 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5805 | else |
53a5351d JM |
5806 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5807 | 0, (char ***) NULL); | |
c5aa993b | 5808 | |
c906108c SS |
5809 | if (sals.nelts != 1) |
5810 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5811 | |
c906108c | 5812 | sal = sals.sals[0]; |
b8c9b27d | 5813 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5814 | |
c906108c SS |
5815 | if (*arg) |
5816 | error ("Junk at end of arguments."); | |
c5aa993b | 5817 | |
c906108c | 5818 | resolve_sal_pc (&sal); |
c5aa993b | 5819 | |
ae66c1fc EZ |
5820 | if (anywhere) |
5821 | /* If the user told us to continue until a specified location, | |
5822 | we don't specify a frame at which we need to stop. */ | |
5823 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5824 | else | |
5825 | /* Otherwise, specify the current frame, because we want to stop only | |
5826 | at the very same frame. */ | |
5827 | breakpoint = set_momentary_breakpoint (sal, | |
5828 | get_frame_id (deprecated_selected_frame), | |
5829 | bp_until); | |
c5aa993b | 5830 | |
6426a772 | 5831 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5832 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5833 | else |
4d6140d9 | 5834 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5835 | |
5836 | /* If we are running asynchronously, and the target supports async | |
5837 | execution, we are not waiting for the target to stop, in the call | |
5838 | tp proceed, below. This means that we cannot delete the | |
5839 | brekpoints until the target has actually stopped. The only place | |
5840 | where we get a chance to do that is in fetch_inferior_event, so | |
5841 | we must set things up for that. */ | |
5842 | ||
6426a772 | 5843 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5844 | { |
0d06e24b JM |
5845 | /* In this case the arg for the continuation is just the point |
5846 | in the exec_cleanups chain from where to start doing | |
5847 | cleanups, because all the continuation does is the cleanups in | |
5848 | the exec_cleanup_chain. */ | |
5849 | arg1 = | |
5850 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5851 | arg1->next = NULL; |
5852 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5853 | |
5854 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5855 | } |
c906108c | 5856 | |
ae66c1fc EZ |
5857 | /* Keep within the current frame, or in frames called by the current |
5858 | one. */ | |
c906108c SS |
5859 | if (prev_frame) |
5860 | { | |
30f7db39 AC |
5861 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5862 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5863 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5864 | bp_until); | |
6426a772 | 5865 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5866 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5867 | else |
4d6140d9 | 5868 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5869 | } |
c5aa993b | 5870 | |
c906108c | 5871 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5872 | /* Do the cleanups now, anly if we are not running asynchronously, |
5873 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5874 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5875 | do_cleanups (old_chain); |
c906108c | 5876 | } |
ae66c1fc | 5877 | |
c906108c SS |
5878 | #if 0 |
5879 | /* These aren't used; I don't konw what they were for. */ | |
5880 | /* Set a breakpoint at the catch clause for NAME. */ | |
5881 | static int | |
fba45db2 | 5882 | catch_breakpoint (char *name) |
c906108c SS |
5883 | { |
5884 | } | |
5885 | ||
5886 | static int | |
fba45db2 | 5887 | disable_catch_breakpoint (void) |
c906108c SS |
5888 | { |
5889 | } | |
5890 | ||
5891 | static int | |
fba45db2 | 5892 | delete_catch_breakpoint (void) |
c906108c SS |
5893 | { |
5894 | } | |
5895 | ||
5896 | static int | |
fba45db2 | 5897 | enable_catch_breakpoint (void) |
c906108c SS |
5898 | { |
5899 | } | |
5900 | #endif /* 0 */ | |
5901 | ||
c906108c | 5902 | static void |
fba45db2 | 5903 | ep_skip_leading_whitespace (char **s) |
c906108c | 5904 | { |
c5aa993b JM |
5905 | if ((s == NULL) || (*s == NULL)) |
5906 | return; | |
5907 | while (isspace (**s)) | |
5908 | *s += 1; | |
c906108c | 5909 | } |
c5aa993b | 5910 | |
c906108c SS |
5911 | /* This function examines a string, and attempts to find a token |
5912 | that might be an event name in the leading characters. If a | |
5913 | possible match is found, a pointer to the last character of | |
5914 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5915 | |
c906108c | 5916 | static char * |
fba45db2 | 5917 | ep_find_event_name_end (char *arg) |
c906108c | 5918 | { |
c5aa993b JM |
5919 | char *s = arg; |
5920 | char *event_name_end = NULL; | |
5921 | ||
c906108c SS |
5922 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5923 | if (arg == NULL) | |
5924 | return NULL; | |
c5aa993b | 5925 | |
c906108c | 5926 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5927 | Basically, we're looking for alphanumerics and underscores; |
5928 | anything else delimites the token. */ | |
c906108c SS |
5929 | while (*s != '\0') |
5930 | { | |
c5aa993b JM |
5931 | if (!isalnum (*s) && (*s != '_')) |
5932 | break; | |
c906108c SS |
5933 | event_name_end = s; |
5934 | s++; | |
5935 | } | |
c5aa993b | 5936 | |
c906108c SS |
5937 | return event_name_end; |
5938 | } | |
5939 | ||
c5aa993b | 5940 | |
c906108c SS |
5941 | /* This function attempts to parse an optional "if <cond>" clause |
5942 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5943 | |
c906108c SS |
5944 | Else, it returns a pointer to the condition string. (It does not |
5945 | attempt to evaluate the string against a particular block.) And, | |
5946 | it updates arg to point to the first character following the parsed | |
5947 | if clause in the arg string. */ | |
53a5351d | 5948 | |
c906108c | 5949 | static char * |
fba45db2 | 5950 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5951 | { |
c5aa993b JM |
5952 | char *cond_string; |
5953 | ||
5954 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5955 | return NULL; |
c5aa993b | 5956 | |
c906108c SS |
5957 | /* Skip the "if" keyword. */ |
5958 | (*arg) += 2; | |
c5aa993b | 5959 | |
c906108c SS |
5960 | /* Skip any extra leading whitespace, and record the start of the |
5961 | condition string. */ | |
5962 | ep_skip_leading_whitespace (arg); | |
5963 | cond_string = *arg; | |
c5aa993b | 5964 | |
c906108c SS |
5965 | /* Assume that the condition occupies the remainder of the arg string. */ |
5966 | (*arg) += strlen (cond_string); | |
c5aa993b | 5967 | |
c906108c SS |
5968 | return cond_string; |
5969 | } | |
c5aa993b | 5970 | |
c906108c SS |
5971 | /* This function attempts to parse an optional filename from the arg |
5972 | string. If one is not found, it returns NULL. | |
c5aa993b | 5973 | |
c906108c SS |
5974 | Else, it returns a pointer to the parsed filename. (This function |
5975 | makes no attempt to verify that a file of that name exists, or is | |
5976 | accessible.) And, it updates arg to point to the first character | |
5977 | following the parsed filename in the arg string. | |
c5aa993b | 5978 | |
c906108c SS |
5979 | Note that clients needing to preserve the returned filename for |
5980 | future access should copy it to their own buffers. */ | |
5981 | static char * | |
fba45db2 | 5982 | ep_parse_optional_filename (char **arg) |
c906108c | 5983 | { |
c5aa993b JM |
5984 | static char filename[1024]; |
5985 | char *arg_p = *arg; | |
5986 | int i; | |
5987 | char c; | |
5988 | ||
c906108c SS |
5989 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5990 | return NULL; | |
c5aa993b JM |
5991 | |
5992 | for (i = 0;; i++) | |
c906108c SS |
5993 | { |
5994 | c = *arg_p; | |
5995 | if (isspace (c)) | |
c5aa993b | 5996 | c = '\0'; |
c906108c SS |
5997 | filename[i] = c; |
5998 | if (c == '\0') | |
c5aa993b | 5999 | break; |
c906108c SS |
6000 | arg_p++; |
6001 | } | |
6002 | *arg = arg_p; | |
c5aa993b | 6003 | |
c906108c SS |
6004 | return filename; |
6005 | } | |
c5aa993b | 6006 | |
c906108c SS |
6007 | /* Commands to deal with catching events, such as signals, exceptions, |
6008 | process start/exit, etc. */ | |
c5aa993b JM |
6009 | |
6010 | typedef enum | |
6011 | { | |
6012 | catch_fork, catch_vfork | |
6013 | } | |
6014 | catch_fork_kind; | |
6015 | ||
e514a9d6 | 6016 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
6017 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
6018 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 6019 | |
c906108c | 6020 | static void |
fba45db2 KB |
6021 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6022 | int from_tty) | |
c906108c | 6023 | { |
c5aa993b JM |
6024 | char *cond_string = NULL; |
6025 | ||
c906108c | 6026 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6027 | |
c906108c | 6028 | /* The allowed syntax is: |
c5aa993b JM |
6029 | catch [v]fork |
6030 | catch [v]fork if <cond> | |
6031 | ||
c906108c SS |
6032 | First, check if there's an if clause. */ |
6033 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6034 | |
c906108c SS |
6035 | if ((*arg != '\0') && !isspace (*arg)) |
6036 | error ("Junk at end of arguments."); | |
c5aa993b | 6037 | |
c906108c SS |
6038 | /* If this target supports it, create a fork or vfork catchpoint |
6039 | and enable reporting of such events. */ | |
c5aa993b JM |
6040 | switch (fork_kind) |
6041 | { | |
6042 | case catch_fork: | |
c906108c SS |
6043 | create_fork_event_catchpoint (tempflag, cond_string); |
6044 | break; | |
c5aa993b | 6045 | case catch_vfork: |
c906108c SS |
6046 | create_vfork_event_catchpoint (tempflag, cond_string); |
6047 | break; | |
c5aa993b | 6048 | default: |
c906108c SS |
6049 | error ("unsupported or unknown fork kind; cannot catch it"); |
6050 | break; | |
c5aa993b | 6051 | } |
c906108c | 6052 | } |
e514a9d6 | 6053 | #endif |
c906108c | 6054 | |
e514a9d6 | 6055 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 6056 | static void |
fba45db2 | 6057 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6058 | { |
c5aa993b | 6059 | char *cond_string = NULL; |
c906108c SS |
6060 | |
6061 | ep_skip_leading_whitespace (&arg); | |
6062 | ||
6063 | /* The allowed syntax is: | |
c5aa993b JM |
6064 | catch exec |
6065 | catch exec if <cond> | |
c906108c SS |
6066 | |
6067 | First, check if there's an if clause. */ | |
6068 | cond_string = ep_parse_optional_if_clause (&arg); | |
6069 | ||
6070 | if ((*arg != '\0') && !isspace (*arg)) | |
6071 | error ("Junk at end of arguments."); | |
6072 | ||
6073 | /* If this target supports it, create an exec catchpoint | |
6074 | and enable reporting of such events. */ | |
6075 | create_exec_event_catchpoint (tempflag, cond_string); | |
6076 | } | |
e514a9d6 | 6077 | #endif |
c5aa993b | 6078 | |
c906108c SS |
6079 | #if defined(SOLIB_ADD) |
6080 | static void | |
fba45db2 | 6081 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6082 | { |
c5aa993b JM |
6083 | char *dll_pathname = NULL; |
6084 | char *cond_string = NULL; | |
6085 | ||
c906108c | 6086 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6087 | |
c906108c | 6088 | /* The allowed syntax is: |
c5aa993b JM |
6089 | catch load |
6090 | catch load if <cond> | |
6091 | catch load <filename> | |
6092 | catch load <filename> if <cond> | |
6093 | ||
c906108c SS |
6094 | The user is not allowed to specify the <filename> after an |
6095 | if clause. | |
c5aa993b | 6096 | |
c906108c | 6097 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6098 | |
c906108c SS |
6099 | First, check if there's an if clause. If so, then there |
6100 | cannot be a filename. */ | |
6101 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6102 | |
c906108c SS |
6103 | /* If there was an if clause, then there cannot be a filename. |
6104 | Else, there might be a filename and an if clause. */ | |
6105 | if (cond_string == NULL) | |
6106 | { | |
6107 | dll_pathname = ep_parse_optional_filename (&arg); | |
6108 | ep_skip_leading_whitespace (&arg); | |
6109 | cond_string = ep_parse_optional_if_clause (&arg); | |
6110 | } | |
c5aa993b | 6111 | |
c906108c SS |
6112 | if ((*arg != '\0') && !isspace (*arg)) |
6113 | error ("Junk at end of arguments."); | |
c5aa993b | 6114 | |
c906108c SS |
6115 | /* Create a load breakpoint that only triggers when a load of |
6116 | the specified dll (or any dll, if no pathname was specified) | |
6117 | occurs. */ | |
39f77062 | 6118 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6119 | dll_pathname, cond_string); |
c906108c | 6120 | } |
c5aa993b | 6121 | |
c906108c | 6122 | static void |
fba45db2 | 6123 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6124 | { |
c5aa993b JM |
6125 | char *dll_pathname = NULL; |
6126 | char *cond_string = NULL; | |
6127 | ||
c906108c | 6128 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6129 | |
c906108c | 6130 | /* The allowed syntax is: |
c5aa993b JM |
6131 | catch unload |
6132 | catch unload if <cond> | |
6133 | catch unload <filename> | |
6134 | catch unload <filename> if <cond> | |
6135 | ||
c906108c SS |
6136 | The user is not allowed to specify the <filename> after an |
6137 | if clause. | |
c5aa993b | 6138 | |
c906108c | 6139 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6140 | |
c906108c SS |
6141 | First, check if there's an if clause. If so, then there |
6142 | cannot be a filename. */ | |
6143 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6144 | |
c906108c SS |
6145 | /* If there was an if clause, then there cannot be a filename. |
6146 | Else, there might be a filename and an if clause. */ | |
6147 | if (cond_string == NULL) | |
6148 | { | |
6149 | dll_pathname = ep_parse_optional_filename (&arg); | |
6150 | ep_skip_leading_whitespace (&arg); | |
6151 | cond_string = ep_parse_optional_if_clause (&arg); | |
6152 | } | |
c5aa993b | 6153 | |
c906108c SS |
6154 | if ((*arg != '\0') && !isspace (*arg)) |
6155 | error ("Junk at end of arguments."); | |
c5aa993b | 6156 | |
c906108c SS |
6157 | /* Create an unload breakpoint that only triggers when an unload of |
6158 | the specified dll (or any dll, if no pathname was specified) | |
6159 | occurs. */ | |
39f77062 | 6160 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6161 | dll_pathname, cond_string); |
c906108c SS |
6162 | } |
6163 | #endif /* SOLIB_ADD */ | |
6164 | ||
6165 | /* Commands to deal with catching exceptions. */ | |
6166 | ||
6167 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6168 | exception event callback */ |
c906108c SS |
6169 | |
6170 | static void | |
fba45db2 KB |
6171 | create_exception_catchpoint (int tempflag, char *cond_string, |
6172 | enum exception_event_kind ex_event, | |
6173 | struct symtab_and_line *sal) | |
c906108c | 6174 | { |
c5aa993b | 6175 | struct breakpoint *b; |
c5aa993b | 6176 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6177 | enum bptype bptype; |
c906108c | 6178 | |
c5aa993b | 6179 | if (!sal) /* no exception support? */ |
c906108c SS |
6180 | return; |
6181 | ||
c906108c SS |
6182 | switch (ex_event) |
6183 | { | |
c5aa993b | 6184 | case EX_EVENT_THROW: |
4d28f7a8 | 6185 | bptype = bp_catch_throw; |
c5aa993b JM |
6186 | break; |
6187 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6188 | bptype = bp_catch_catch; |
c5aa993b JM |
6189 | break; |
6190 | default: /* error condition */ | |
c5aa993b | 6191 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6192 | } |
4d28f7a8 KB |
6193 | |
6194 | b = set_raw_breakpoint (*sal, bptype); | |
6195 | set_breakpoint_count (breakpoint_count + 1); | |
6196 | b->number = breakpoint_count; | |
6197 | b->cond = NULL; | |
6198 | b->cond_string = (cond_string == NULL) ? | |
6199 | NULL : savestring (cond_string, strlen (cond_string)); | |
6200 | b->thread = thread; | |
6201 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6202 | b->enable_state = bp_enabled; |
6203 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6204 | mention (b); |
6205 | } | |
6206 | ||
3086aeae DJ |
6207 | static enum print_stop_action |
6208 | print_exception_catchpoint (struct breakpoint *b) | |
6209 | { | |
6210 | annotate_catchpoint (b->number); | |
6211 | ||
6212 | if (strstr (b->addr_string, "throw") != NULL) | |
6213 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6214 | b->number); | |
6215 | else | |
6216 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6217 | b->number); | |
6218 | ||
6219 | return PRINT_SRC_AND_LOC; | |
6220 | } | |
6221 | ||
6222 | static void | |
6223 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6224 | { | |
6225 | if (addressprint) | |
6226 | { | |
6227 | annotate_field (4); | |
5cab636d | 6228 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6229 | } |
6230 | annotate_field (5); | |
5cab636d | 6231 | *last_addr = b->loc->address; |
3086aeae DJ |
6232 | if (strstr (b->addr_string, "throw") != NULL) |
6233 | ui_out_field_string (uiout, "what", "exception throw"); | |
6234 | else | |
6235 | ui_out_field_string (uiout, "what", "exception catch"); | |
6236 | } | |
6237 | ||
6238 | static void | |
6239 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6240 | { | |
6241 | if (strstr (b->addr_string, "throw") != NULL) | |
6242 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6243 | else | |
6244 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6245 | } | |
6246 | ||
6247 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6248 | print_exception_catchpoint, | |
6249 | print_one_exception_catchpoint, | |
6250 | print_mention_exception_catchpoint | |
6251 | }; | |
6252 | ||
6253 | static int | |
6254 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6255 | enum exception_event_kind ex_event, int from_tty) | |
6256 | { | |
6257 | char *trigger_func_name, *nameptr; | |
6258 | struct symtabs_and_lines sals; | |
6259 | struct breakpoint *b; | |
6260 | ||
6261 | if (ex_event == EX_EVENT_CATCH) | |
6262 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6263 | else | |
6264 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6265 | ||
6266 | nameptr = trigger_func_name; | |
6267 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL); | |
6268 | if (sals.nelts == 0) | |
6269 | { | |
b59661bd | 6270 | xfree (trigger_func_name); |
3086aeae DJ |
6271 | return 0; |
6272 | } | |
6273 | ||
6274 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6275 | set_breakpoint_count (breakpoint_count + 1); | |
6276 | b->number = breakpoint_count; | |
6277 | b->cond = NULL; | |
6278 | b->cond_string = (cond_string == NULL) ? | |
6279 | NULL : savestring (cond_string, strlen (cond_string)); | |
6280 | b->thread = -1; | |
6281 | b->addr_string = trigger_func_name; | |
6282 | b->enable_state = bp_enabled; | |
6283 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6284 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6285 | ||
b59661bd | 6286 | xfree (sals.sals); |
3086aeae DJ |
6287 | mention (b); |
6288 | return 1; | |
6289 | } | |
6290 | ||
c5aa993b | 6291 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6292 | |
6293 | static void | |
fba45db2 KB |
6294 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6295 | int tempflag, int from_tty) | |
c906108c | 6296 | { |
c5aa993b JM |
6297 | char *cond_string = NULL; |
6298 | struct symtab_and_line *sal = NULL; | |
6299 | ||
c906108c | 6300 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6301 | |
c906108c SS |
6302 | cond_string = ep_parse_optional_if_clause (&arg); |
6303 | ||
6304 | if ((*arg != '\0') && !isspace (*arg)) | |
6305 | error ("Junk at end of arguments."); | |
6306 | ||
6307 | if ((ex_event != EX_EVENT_THROW) && | |
6308 | (ex_event != EX_EVENT_CATCH)) | |
6309 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6310 | ||
3086aeae DJ |
6311 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6312 | return; | |
6313 | ||
c906108c SS |
6314 | /* See if we can find a callback routine */ |
6315 | sal = target_enable_exception_callback (ex_event, 1); | |
6316 | ||
c5aa993b | 6317 | if (sal) |
c906108c SS |
6318 | { |
6319 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6320 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6321 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6322 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6323 | else |
53a5351d | 6324 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6325 | } |
c5aa993b | 6326 | |
69f567ae | 6327 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6328 | } |
6329 | ||
6330 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6331 | inside a catch_errors */ | |
6332 | ||
6333 | static int | |
4efb68b1 | 6334 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6335 | { |
6336 | args_for_catchpoint_enable *args = arg; | |
6337 | struct symtab_and_line *sal; | |
b5de0fa7 | 6338 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6339 | if (sal == NULL) |
6340 | return 0; | |
6341 | else if (sal == (struct symtab_and_line *) -1) | |
6342 | return -1; | |
6343 | else | |
c5aa993b | 6344 | return 1; /*is valid */ |
c906108c SS |
6345 | } |
6346 | ||
c906108c | 6347 | static void |
fba45db2 | 6348 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6349 | { |
c5aa993b | 6350 | |
c906108c SS |
6351 | /* The first argument may be an event name, such as "start" or "load". |
6352 | If so, then handle it as such. If it doesn't match an event name, | |
6353 | then attempt to interpret it as an exception name. (This latter is | |
6354 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6355 | |
c906108c | 6356 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6357 | char *arg1_start = arg; |
6358 | char *arg1_end; | |
6359 | int arg1_length; | |
6360 | ||
c906108c SS |
6361 | if (arg1_start == NULL) |
6362 | { | |
c5aa993b | 6363 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6364 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6365 | /* return; */ | |
c5aa993b | 6366 | /* Now, this is not allowed */ |
c906108c SS |
6367 | error ("Catch requires an event name."); |
6368 | ||
6369 | } | |
6370 | arg1_end = ep_find_event_name_end (arg1_start); | |
6371 | if (arg1_end == NULL) | |
6372 | error ("catch requires an event"); | |
6373 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6374 | |
c906108c SS |
6375 | /* Try to match what we found against known event names. */ |
6376 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6377 | { | |
6378 | error ("Catch of signal not yet implemented"); | |
6379 | } | |
6380 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6381 | { | |
53a5351d JM |
6382 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6383 | tempflag, from_tty); | |
c906108c SS |
6384 | } |
6385 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6386 | { | |
53a5351d JM |
6387 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6388 | tempflag, from_tty); | |
c906108c SS |
6389 | } |
6390 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6391 | { | |
6392 | error ("Catch of thread_start not yet implemented"); | |
6393 | } | |
6394 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6395 | { | |
6396 | error ("Catch of thread_exit not yet implemented"); | |
6397 | } | |
6398 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6399 | { | |
6400 | error ("Catch of thread_join not yet implemented"); | |
6401 | } | |
6402 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6403 | { | |
6404 | error ("Catch of start not yet implemented"); | |
6405 | } | |
6406 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6407 | { | |
6408 | error ("Catch of exit not yet implemented"); | |
6409 | } | |
6410 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6411 | { | |
6412 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6413 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6414 | #else |
6415 | error ("Catch of fork not yet implemented"); | |
6416 | #endif | |
6417 | } | |
6418 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6419 | { | |
6420 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6421 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6422 | #else |
6423 | error ("Catch of vfork not yet implemented"); | |
6424 | #endif | |
6425 | } | |
6426 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6427 | { | |
6428 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6429 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6430 | #else |
6431 | error ("Catch of exec not yet implemented"); | |
6432 | #endif | |
6433 | } | |
6434 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6435 | { | |
6436 | #if defined(SOLIB_ADD) | |
c5aa993b | 6437 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6438 | #else |
6439 | error ("Catch of load not implemented"); | |
6440 | #endif | |
6441 | } | |
6442 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6443 | { | |
6444 | #if defined(SOLIB_ADD) | |
c5aa993b | 6445 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6446 | #else |
6447 | error ("Catch of load not implemented"); | |
6448 | #endif | |
6449 | } | |
6450 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6451 | { | |
6452 | error ("Catch of stop not yet implemented"); | |
6453 | } | |
c5aa993b | 6454 | |
c906108c SS |
6455 | /* This doesn't appear to be an event name */ |
6456 | ||
6457 | else | |
6458 | { | |
6459 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6460 | as the name of an exception */ |
c906108c | 6461 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6462 | /* Now this is not allowed */ |
c906108c SS |
6463 | error ("Unknown event kind specified for catch"); |
6464 | ||
6465 | } | |
6466 | } | |
6467 | ||
6468 | /* Used by the gui, could be made a worker for other things. */ | |
6469 | ||
6470 | struct breakpoint * | |
fba45db2 | 6471 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6472 | { |
6473 | struct breakpoint *b; | |
4d28f7a8 | 6474 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6475 | set_breakpoint_count (breakpoint_count + 1); |
6476 | b->number = breakpoint_count; | |
c906108c SS |
6477 | b->cond = 0; |
6478 | b->thread = -1; | |
6479 | return b; | |
6480 | } | |
6481 | ||
6482 | #if 0 | |
6483 | /* These aren't used; I don't know what they were for. */ | |
6484 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6485 | static void | |
fba45db2 | 6486 | disable_catch (char *args) |
c906108c SS |
6487 | { |
6488 | /* Map the disable command to catch clauses described in ARGS. */ | |
6489 | } | |
6490 | ||
6491 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6492 | static void | |
fba45db2 | 6493 | enable_catch (char *args) |
c906108c SS |
6494 | { |
6495 | /* Map the disable command to catch clauses described in ARGS. */ | |
6496 | } | |
6497 | ||
6498 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6499 | static void | |
fba45db2 | 6500 | delete_catch (char *args) |
c906108c SS |
6501 | { |
6502 | /* Map the delete command to catch clauses described in ARGS. */ | |
6503 | } | |
6504 | #endif /* 0 */ | |
6505 | ||
6506 | static void | |
fba45db2 | 6507 | catch_command (char *arg, int from_tty) |
c906108c SS |
6508 | { |
6509 | catch_command_1 (arg, 0, from_tty); | |
6510 | } | |
6511 | \f | |
6512 | ||
6513 | static void | |
fba45db2 | 6514 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6515 | { |
6516 | catch_command_1 (arg, 1, from_tty); | |
6517 | } | |
6518 | ||
80f8a6eb | 6519 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6520 | |
6521 | static void | |
fba45db2 | 6522 | clear_command (char *arg, int from_tty) |
c906108c | 6523 | { |
80f8a6eb | 6524 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6525 | int default_match; |
6526 | struct symtabs_and_lines sals; | |
6527 | struct symtab_and_line sal; | |
c906108c SS |
6528 | int i; |
6529 | ||
6530 | if (arg) | |
6531 | { | |
6532 | sals = decode_line_spec (arg, 1); | |
6533 | default_match = 0; | |
6534 | } | |
6535 | else | |
6536 | { | |
c5aa993b | 6537 | sals.sals = (struct symtab_and_line *) |
c906108c | 6538 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6539 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6540 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6541 | sal.line = default_breakpoint_line; |
6542 | sal.symtab = default_breakpoint_symtab; | |
6543 | sal.pc = default_breakpoint_address; | |
6544 | if (sal.symtab == 0) | |
6545 | error ("No source file specified."); | |
6546 | ||
6547 | sals.sals[0] = sal; | |
6548 | sals.nelts = 1; | |
6549 | ||
6550 | default_match = 1; | |
6551 | } | |
6552 | ||
6553 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6554 | to it. Do it in two passes, solely to preserve the current |
6555 | behavior that from_tty is forced true if we delete more than | |
6556 | one breakpoint. */ | |
c906108c | 6557 | |
80f8a6eb | 6558 | found = NULL; |
c906108c SS |
6559 | for (i = 0; i < sals.nelts; i++) |
6560 | { | |
6561 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6562 | If line given (pc == 0), clear all bpts on specified line. |
6563 | If defaulting, clear all bpts on default line | |
c906108c | 6564 | or at default pc. |
c5aa993b JM |
6565 | |
6566 | defaulting sal.pc != 0 tests to do | |
6567 | ||
6568 | 0 1 pc | |
6569 | 1 1 pc _and_ line | |
6570 | 0 0 line | |
6571 | 1 0 <can't happen> */ | |
c906108c SS |
6572 | |
6573 | sal = sals.sals[i]; | |
80f8a6eb | 6574 | prev = NULL; |
c906108c | 6575 | |
80f8a6eb MS |
6576 | /* Find all matching breakpoints, remove them from the |
6577 | breakpoint chain, and add them to the 'found' chain. */ | |
6578 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6579 | { |
80f8a6eb MS |
6580 | /* Are we going to delete b? */ |
6581 | if (b->type != bp_none | |
6582 | && b->type != bp_watchpoint | |
6583 | && b->type != bp_hardware_watchpoint | |
6584 | && b->type != bp_read_watchpoint | |
6585 | && b->type != bp_access_watchpoint | |
6586 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6587 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6588 | && (!section_is_overlay (b->loc->section) |
6589 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6590 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6591 | || ((default_match || (0 == sal.pc)) | |
6592 | && b->source_file != NULL | |
6593 | && sal.symtab != NULL | |
6594 | && STREQ (b->source_file, sal.symtab->filename) | |
6595 | && b->line_number == sal.line))) | |
6596 | /* Yes, if sal source file and line matches b. */ | |
6597 | { | |
6598 | /* Remove it from breakpoint_chain... */ | |
6599 | if (b == breakpoint_chain) | |
6600 | { | |
6601 | /* b is at the head of the list */ | |
6602 | breakpoint_chain = b->next; | |
6603 | } | |
6604 | else | |
6605 | { | |
6606 | prev->next = b->next; | |
6607 | } | |
6608 | /* And add it to 'found' chain. */ | |
6609 | b->next = found; | |
6610 | found = b; | |
6611 | } | |
c906108c | 6612 | else |
80f8a6eb MS |
6613 | { |
6614 | /* Keep b, and keep a pointer to it. */ | |
6615 | prev = b; | |
6616 | } | |
c906108c | 6617 | } |
80f8a6eb MS |
6618 | } |
6619 | /* Now go thru the 'found' chain and delete them. */ | |
6620 | if (found == 0) | |
6621 | { | |
6622 | if (arg) | |
6623 | error ("No breakpoint at %s.", arg); | |
6624 | else | |
6625 | error ("No breakpoint at this line."); | |
6626 | } | |
c906108c | 6627 | |
80f8a6eb MS |
6628 | if (found->next) |
6629 | from_tty = 1; /* Always report if deleted more than one */ | |
6630 | if (from_tty) | |
6631 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6632 | breakpoints_changed (); | |
6633 | while (found) | |
6634 | { | |
c5aa993b | 6635 | if (from_tty) |
80f8a6eb MS |
6636 | printf_unfiltered ("%d ", found->number); |
6637 | tmp = found->next; | |
6638 | delete_breakpoint (found); | |
6639 | found = tmp; | |
c906108c | 6640 | } |
80f8a6eb MS |
6641 | if (from_tty) |
6642 | putchar_unfiltered ('\n'); | |
c906108c SS |
6643 | } |
6644 | \f | |
6645 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6646 | all breakpoints that are marked for deletion, whether hit or not. | |
6647 | This is called after any breakpoint is hit, or after errors. */ | |
6648 | ||
6649 | void | |
fba45db2 | 6650 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6651 | { |
6652 | struct breakpoint *b, *temp; | |
6653 | ||
6654 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6655 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6656 | && bs->stop) |
6657 | delete_breakpoint (bs->breakpoint_at); | |
6658 | ||
6659 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6660 | { |
b5de0fa7 | 6661 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6662 | delete_breakpoint (b); |
6663 | } | |
c906108c SS |
6664 | } |
6665 | ||
53a5351d JM |
6666 | /* Delete a breakpoint and clean up all traces of it in the data |
6667 | structures. */ | |
c906108c SS |
6668 | |
6669 | void | |
fba45db2 | 6670 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6671 | { |
52f0bd74 AC |
6672 | struct breakpoint *b; |
6673 | bpstat bs; | |
7cc221ef | 6674 | struct bp_location *loc; |
c906108c SS |
6675 | |
6676 | if (bpt == NULL) | |
6677 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6678 | ||
6679 | ||
6680 | /* Has this bp already been deleted? This can happen because multiple | |
6681 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6682 | ||
6683 | One example of this happening is a watchpoint's scope bp. When the | |
6684 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6685 | delete it. We also delete its scope bp. But the scope bp is marked | |
6686 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6687 | checked for auto-deleting bp's, which are deleted. | |
6688 | ||
6689 | A real solution to this problem might involve reference counts in bp's, | |
6690 | and/or giving them pointers back to their referencing bpstat's, and | |
6691 | teaching delete_breakpoint to only free a bp's storage when no more | |
6692 | references were extent. A cheaper bandaid was chosen. */ | |
6693 | if (bpt->type == bp_none) | |
6694 | return; | |
6695 | ||
6696 | if (delete_breakpoint_hook) | |
6697 | delete_breakpoint_hook (bpt); | |
104c1213 | 6698 | breakpoint_delete_event (bpt->number); |
c906108c | 6699 | |
5cab636d | 6700 | if (bpt->loc->inserted) |
0bde7532 | 6701 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6702 | |
c906108c SS |
6703 | if (breakpoint_chain == bpt) |
6704 | breakpoint_chain = bpt->next; | |
6705 | ||
7cc221ef DJ |
6706 | if (bp_location_chain == bpt->loc) |
6707 | bp_location_chain = bpt->loc->next; | |
6708 | ||
c906108c SS |
6709 | /* If we have callback-style exception catchpoints, don't go through |
6710 | the adjustments to the C++ runtime library etc. if the inferior | |
6711 | isn't actually running. target_enable_exception_callback for a | |
6712 | null target ops vector gives an undesirable error message, so we | |
6713 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6714 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6715 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6716 | { | |
53a5351d | 6717 | /* Format possible error msg */ |
9ebf4acf AC |
6718 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6719 | bpt->number); | |
6720 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6721 | args_for_catchpoint_enable args; | |
53a5351d JM |
6722 | args.kind = bpt->type == bp_catch_catch ? |
6723 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6724 | args.enable_p = 0; |
c906108c SS |
6725 | catch_errors (cover_target_enable_exception_callback, &args, |
6726 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6727 | do_cleanups (cleanups); |
c906108c SS |
6728 | } |
6729 | ||
6730 | ||
6731 | ALL_BREAKPOINTS (b) | |
6732 | if (b->next == bpt) | |
c5aa993b JM |
6733 | { |
6734 | b->next = bpt->next; | |
6735 | break; | |
6736 | } | |
c906108c | 6737 | |
7cc221ef DJ |
6738 | ALL_BP_LOCATIONS (loc) |
6739 | if (loc->next == bpt->loc) | |
6740 | { | |
6741 | loc->next = bpt->loc->next; | |
6742 | break; | |
6743 | } | |
6744 | ||
9f60f21b | 6745 | check_duplicates (bpt); |
c906108c SS |
6746 | /* If this breakpoint was inserted, and there is another breakpoint |
6747 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6748 | if (bpt->loc->inserted |
c906108c SS |
6749 | && bpt->type != bp_hardware_watchpoint |
6750 | && bpt->type != bp_read_watchpoint | |
6751 | && bpt->type != bp_access_watchpoint | |
6752 | && bpt->type != bp_catch_fork | |
6753 | && bpt->type != bp_catch_vfork | |
6754 | && bpt->type != bp_catch_exec) | |
6755 | { | |
6756 | ALL_BREAKPOINTS (b) | |
5cab636d | 6757 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6758 | && b->loc->section == bpt->loc->section |
5cab636d | 6759 | && !b->loc->duplicate |
b5de0fa7 EZ |
6760 | && b->enable_state != bp_disabled |
6761 | && b->enable_state != bp_shlib_disabled | |
6762 | && b->enable_state != bp_call_disabled) | |
c5aa993b JM |
6763 | { |
6764 | int val; | |
53a5351d | 6765 | |
c2c6d25f JM |
6766 | /* We should never reach this point if there is a permanent |
6767 | breakpoint at the same address as the one being deleted. | |
6768 | If there is a permanent breakpoint somewhere, it should | |
6769 | always be the only one inserted. */ | |
b5de0fa7 | 6770 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6771 | internal_error (__FILE__, __LINE__, |
6772 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6773 | "a permanent breakpoint"); |
6774 | ||
53a5351d | 6775 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6776 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6777 | else |
5cab636d | 6778 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6779 | |
81d0cc19 | 6780 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6781 | if (val != 0) |
6782 | { | |
81d0cc19 GS |
6783 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6784 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6785 | ||
6786 | ||
6787 | if (b->type == bp_hardware_breakpoint) | |
6788 | { | |
6789 | fprintf_unfiltered (tmp_error_stream, | |
6790 | "Cannot insert hardware breakpoint %d.\n" | |
6791 | "You may have requested too many hardware breakpoints.\n", | |
6792 | b->number); | |
6793 | } | |
6794 | else | |
6795 | { | |
6796 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6797 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6798 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6799 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6800 | safe_strerror (val)); | |
6801 | } | |
6802 | ||
6803 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6804 | target_terminal_ours_for_output (); |
81d0cc19 | 6805 | error_stream(tmp_error_stream); |
c5aa993b JM |
6806 | } |
6807 | else | |
5cab636d | 6808 | b->loc->inserted = 1; |
c5aa993b | 6809 | } |
c906108c SS |
6810 | } |
6811 | ||
6812 | free_command_lines (&bpt->commands); | |
6813 | if (bpt->cond) | |
b8c9b27d | 6814 | xfree (bpt->cond); |
c906108c | 6815 | if (bpt->cond_string != NULL) |
b8c9b27d | 6816 | xfree (bpt->cond_string); |
c906108c | 6817 | if (bpt->addr_string != NULL) |
b8c9b27d | 6818 | xfree (bpt->addr_string); |
c906108c | 6819 | if (bpt->exp != NULL) |
b8c9b27d | 6820 | xfree (bpt->exp); |
c906108c | 6821 | if (bpt->exp_string != NULL) |
b8c9b27d | 6822 | xfree (bpt->exp_string); |
c906108c SS |
6823 | if (bpt->val != NULL) |
6824 | value_free (bpt->val); | |
6825 | if (bpt->source_file != NULL) | |
b8c9b27d | 6826 | xfree (bpt->source_file); |
c906108c | 6827 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6828 | xfree (bpt->dll_pathname); |
c906108c | 6829 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6830 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6831 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6832 | xfree (bpt->exec_pathname); |
c906108c SS |
6833 | |
6834 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6835 | /* FIXME, how can we find all bpstat's? | |
6836 | We just check stop_bpstat for now. */ | |
6837 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6838 | if (bs->breakpoint_at == bpt) | |
6839 | { | |
6840 | bs->breakpoint_at = NULL; | |
c906108c | 6841 | bs->old_val = NULL; |
c2b8ed2c | 6842 | /* bs->commands will be freed later. */ |
c906108c SS |
6843 | } |
6844 | /* On the chance that someone will soon try again to delete this same | |
6845 | bp, we mark it as deleted before freeing its storage. */ | |
6846 | bpt->type = bp_none; | |
6847 | ||
5cab636d | 6848 | xfree (bpt->loc); |
b8c9b27d | 6849 | xfree (bpt); |
c906108c SS |
6850 | } |
6851 | ||
4d6140d9 AC |
6852 | static void |
6853 | do_delete_breakpoint_cleanup (void *b) | |
6854 | { | |
6855 | delete_breakpoint (b); | |
6856 | } | |
6857 | ||
6858 | struct cleanup * | |
6859 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6860 | { | |
6861 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6862 | } | |
6863 | ||
6864 | struct cleanup * | |
6865 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6866 | { | |
6867 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6868 | } | |
6869 | ||
c906108c | 6870 | void |
fba45db2 | 6871 | delete_command (char *arg, int from_tty) |
c906108c SS |
6872 | { |
6873 | struct breakpoint *b, *temp; | |
6874 | ||
ea9365bb TT |
6875 | dont_repeat (); |
6876 | ||
c906108c SS |
6877 | if (arg == 0) |
6878 | { | |
6879 | int breaks_to_delete = 0; | |
6880 | ||
6881 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6882 | Do not delete internal or call-dummy breakpoints, these |
6883 | have to be deleted with an explicit breakpoint number argument. */ | |
6884 | ALL_BREAKPOINTS (b) | |
6885 | { | |
6886 | if (b->type != bp_call_dummy && | |
6887 | b->type != bp_shlib_event && | |
c4093a6a | 6888 | b->type != bp_thread_event && |
1900040c | 6889 | b->type != bp_overlay_event && |
c5aa993b JM |
6890 | b->number >= 0) |
6891 | breaks_to_delete = 1; | |
6892 | } | |
c906108c SS |
6893 | |
6894 | /* Ask user only if there are some breakpoints to delete. */ | |
6895 | if (!from_tty | |
6896 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6897 | { | |
c5aa993b JM |
6898 | ALL_BREAKPOINTS_SAFE (b, temp) |
6899 | { | |
6900 | if (b->type != bp_call_dummy && | |
6901 | b->type != bp_shlib_event && | |
c4093a6a | 6902 | b->type != bp_thread_event && |
1900040c | 6903 | b->type != bp_overlay_event && |
c5aa993b JM |
6904 | b->number >= 0) |
6905 | delete_breakpoint (b); | |
6906 | } | |
c906108c SS |
6907 | } |
6908 | } | |
6909 | else | |
6910 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6911 | } | |
6912 | ||
6913 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6914 | The value we return ends up being the return value from catch_errors. | |
6915 | Unused in this case. */ | |
6916 | ||
6917 | static int | |
4efb68b1 | 6918 | breakpoint_re_set_one (void *bint) |
c906108c | 6919 | { |
53a5351d JM |
6920 | /* get past catch_errs */ |
6921 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6922 | struct value *mark; |
6923 | int i; | |
6924 | struct symtabs_and_lines sals; | |
6925 | char *s; | |
b5de0fa7 | 6926 | enum enable_state save_enable; |
c906108c SS |
6927 | |
6928 | switch (b->type) | |
6929 | { | |
6930 | case bp_none: | |
53a5351d JM |
6931 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6932 | b->number); | |
c906108c SS |
6933 | return 0; |
6934 | case bp_breakpoint: | |
6935 | case bp_hardware_breakpoint: | |
6936 | case bp_catch_load: | |
6937 | case bp_catch_unload: | |
6938 | if (b->addr_string == NULL) | |
6939 | { | |
6940 | /* Anything without a string can't be re-set. */ | |
6941 | delete_breakpoint (b); | |
6942 | return 0; | |
6943 | } | |
b18c45ed AC |
6944 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6945 | ||
6946 | ``And a hack it is, although Apple's Darwin version of GDB | |
6947 | contains an almost identical hack to implement a "future | |
6948 | break" command. It seems to work in many real world cases, | |
6949 | but it is easy to come up with a test case where the patch | |
6950 | doesn't help at all.'' | |
6951 | ||
6952 | ``It seems that the way GDB implements breakpoints - in - | |
6953 | shared - libraries was designed for a.out shared library | |
6954 | systems (SunOS 4) where shared libraries were loaded at a | |
6955 | fixed address in memory. Since ELF shared libraries can (and | |
6956 | will) be loaded at any address in memory, things break. | |
6957 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6958 | we should add this hack to the branch only. I cannot | |
6959 | guarantee that things will be fixed on the trunk in the near | |
6960 | future.'' | |
6961 | ||
6962 | In case we have a problem, disable this breakpoint. We'll | |
6963 | restore its status if we succeed. Don't disable a | |
6964 | shlib_disabled breakpoint though. There's a fair chance we | |
6965 | can't re-set it if the shared library it's in hasn't been | |
6966 | loaded yet. */ | |
b5de0fa7 | 6967 | save_enable = b->enable_state; |
b18c45ed AC |
6968 | if (b->enable_state != bp_shlib_disabled) |
6969 | b->enable_state = bp_disabled; | |
c906108c SS |
6970 | |
6971 | set_language (b->language); | |
6972 | input_radix = b->input_radix; | |
6973 | s = b->addr_string; | |
c5aa993b | 6974 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6975 | for (i = 0; i < sals.nelts; i++) |
6976 | { | |
6977 | resolve_sal_pc (&sals.sals[i]); | |
6978 | ||
6979 | /* Reparse conditions, they might contain references to the | |
6980 | old symtab. */ | |
6981 | if (b->cond_string != NULL) | |
6982 | { | |
6983 | s = b->cond_string; | |
6984 | if (b->cond) | |
b8c9b27d | 6985 | xfree (b->cond); |
c906108c SS |
6986 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6987 | } | |
6988 | ||
c5aa993b | 6989 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 6990 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
6991 | /* ...or new and old breakpoints both have source files, and |
6992 | the source file name or the line number changes... */ | |
c906108c SS |
6993 | || (b->source_file != NULL |
6994 | && sals.sals[i].symtab != NULL | |
6995 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6996 | || b->line_number != sals.sals[i].line) | |
c906108c | 6997 | ) |
c5aa993b JM |
6998 | /* ...or we switch between having a source file and not having |
6999 | one. */ | |
7000 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7001 | ) | |
c906108c SS |
7002 | { |
7003 | if (b->source_file != NULL) | |
b8c9b27d | 7004 | xfree (b->source_file); |
c906108c SS |
7005 | if (sals.sals[i].symtab == NULL) |
7006 | b->source_file = NULL; | |
7007 | else | |
7008 | b->source_file = | |
7009 | savestring (sals.sals[i].symtab->filename, | |
7010 | strlen (sals.sals[i].symtab->filename)); | |
7011 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7012 | b->loc->requested_address = sals.sals[i].pc; |
7013 | b->loc->address | |
7014 | = adjust_breakpoint_address (b->loc->requested_address); | |
c906108c | 7015 | |
c5aa993b | 7016 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7017 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7018 | breakpoints. */ |
c906108c SS |
7019 | |
7020 | mention (b); | |
7021 | ||
7022 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7023 | rather than once for every breakpoint. */ |
c906108c SS |
7024 | breakpoints_changed (); |
7025 | } | |
cf3a9e5b | 7026 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7027 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7028 | |
7029 | ||
c5aa993b | 7030 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7031 | can be used. */ |
9f60f21b | 7032 | check_duplicates (b); |
c906108c SS |
7033 | |
7034 | } | |
b8c9b27d | 7035 | xfree (sals.sals); |
c906108c SS |
7036 | break; |
7037 | ||
7038 | case bp_watchpoint: | |
7039 | case bp_hardware_watchpoint: | |
7040 | case bp_read_watchpoint: | |
7041 | case bp_access_watchpoint: | |
7042 | innermost_block = NULL; | |
53a5351d JM |
7043 | /* The issue arises of what context to evaluate this in. The |
7044 | same one as when it was set, but what does that mean when | |
7045 | symbols have been re-read? We could save the filename and | |
7046 | functionname, but if the context is more local than that, the | |
7047 | best we could do would be something like how many levels deep | |
7048 | and which index at that particular level, but that's going to | |
7049 | be less stable than filenames or function names. */ | |
7050 | ||
c906108c SS |
7051 | /* So for now, just use a global context. */ |
7052 | if (b->exp) | |
b8c9b27d | 7053 | xfree (b->exp); |
c906108c SS |
7054 | b->exp = parse_expression (b->exp_string); |
7055 | b->exp_valid_block = innermost_block; | |
7056 | mark = value_mark (); | |
7057 | if (b->val) | |
7058 | value_free (b->val); | |
7059 | b->val = evaluate_expression (b->exp); | |
7060 | release_value (b->val); | |
a881cf8e | 7061 | if (VALUE_LAZY (b->val) && b->enable_state == bp_enabled) |
c906108c SS |
7062 | value_fetch_lazy (b->val); |
7063 | ||
7064 | if (b->cond_string != NULL) | |
7065 | { | |
7066 | s = b->cond_string; | |
7067 | if (b->cond) | |
b8c9b27d | 7068 | xfree (b->cond); |
c5aa993b | 7069 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7070 | } |
b5de0fa7 | 7071 | if (b->enable_state == bp_enabled) |
c906108c SS |
7072 | mention (b); |
7073 | value_free_to_mark (mark); | |
7074 | break; | |
c5aa993b JM |
7075 | case bp_catch_catch: |
7076 | case bp_catch_throw: | |
c906108c | 7077 | break; |
c5aa993b JM |
7078 | /* We needn't really do anything to reset these, since the mask |
7079 | that requests them is unaffected by e.g., new libraries being | |
7080 | loaded. */ | |
c906108c SS |
7081 | case bp_catch_fork: |
7082 | case bp_catch_vfork: | |
7083 | case bp_catch_exec: | |
7084 | break; | |
c5aa993b | 7085 | |
c906108c SS |
7086 | default: |
7087 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7088 | /* fall through */ | |
1900040c MS |
7089 | /* Delete longjmp and overlay event breakpoints; they will be |
7090 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7091 | case bp_longjmp: |
7092 | case bp_longjmp_resume: | |
1900040c | 7093 | case bp_overlay_event: |
c906108c SS |
7094 | delete_breakpoint (b); |
7095 | break; | |
7096 | ||
c5aa993b JM |
7097 | /* This breakpoint is special, it's set up when the inferior |
7098 | starts and we really don't want to touch it. */ | |
c906108c SS |
7099 | case bp_shlib_event: |
7100 | ||
c4093a6a JM |
7101 | /* Like bp_shlib_event, this breakpoint type is special. |
7102 | Once it is set up, we do not want to touch it. */ | |
7103 | case bp_thread_event: | |
7104 | ||
c5aa993b JM |
7105 | /* Keep temporary breakpoints, which can be encountered when we step |
7106 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7107 | Otherwise these should have been blown away via the cleanup chain | |
7108 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7109 | case bp_until: |
7110 | case bp_finish: | |
7111 | case bp_watchpoint_scope: | |
7112 | case bp_call_dummy: | |
7113 | case bp_step_resume: | |
7114 | break; | |
7115 | } | |
7116 | ||
7117 | return 0; | |
7118 | } | |
7119 | ||
7120 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7121 | void | |
fba45db2 | 7122 | breakpoint_re_set (void) |
c906108c SS |
7123 | { |
7124 | struct breakpoint *b, *temp; | |
7125 | enum language save_language; | |
7126 | int save_input_radix; | |
c5aa993b | 7127 | |
c906108c SS |
7128 | save_language = current_language->la_language; |
7129 | save_input_radix = input_radix; | |
7130 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7131 | { |
53a5351d | 7132 | /* Format possible error msg */ |
9ebf4acf AC |
7133 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7134 | b->number); | |
7135 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7136 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7137 | do_cleanups (cleanups); |
c5aa993b | 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 | 7174 | { |
52f0bd74 | 7175 | struct breakpoint *b; |
c906108c SS |
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; | |
52f0bd74 | 7220 | int num; |
c906108c SS |
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 | 7243 | { |
52f0bd74 | 7244 | char *p = args; |
c906108c | 7245 | char *p1; |
52f0bd74 AC |
7246 | int num; |
7247 | 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 | ||
c906108c | 7308 | static void |
fba45db2 | 7309 | disable_command (char *args, int from_tty) |
c906108c | 7310 | { |
52f0bd74 | 7311 | struct breakpoint *bpt; |
c906108c SS |
7312 | if (args == 0) |
7313 | ALL_BREAKPOINTS (bpt) | |
7314 | switch (bpt->type) | |
c5aa993b JM |
7315 | { |
7316 | case bp_none: | |
53a5351d JM |
7317 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7318 | bpt->number); | |
c5aa993b JM |
7319 | continue; |
7320 | case bp_breakpoint: | |
7321 | case bp_catch_load: | |
7322 | case bp_catch_unload: | |
7323 | case bp_catch_fork: | |
7324 | case bp_catch_vfork: | |
7325 | case bp_catch_exec: | |
7326 | case bp_catch_catch: | |
7327 | case bp_catch_throw: | |
7328 | case bp_hardware_breakpoint: | |
7329 | case bp_watchpoint: | |
7330 | case bp_hardware_watchpoint: | |
7331 | case bp_read_watchpoint: | |
7332 | case bp_access_watchpoint: | |
7333 | disable_breakpoint (bpt); | |
7334 | default: | |
7335 | continue; | |
7336 | } | |
c906108c SS |
7337 | else |
7338 | map_breakpoint_numbers (args, disable_breakpoint); | |
7339 | } | |
7340 | ||
7341 | static void | |
fba45db2 | 7342 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7343 | { |
7344 | struct frame_info *save_selected_frame = NULL; | |
7345 | int save_selected_frame_level = -1; | |
7346 | int target_resources_ok, other_type_used; | |
7347 | struct value *mark; | |
7348 | ||
7349 | if (bpt->type == bp_hardware_breakpoint) | |
7350 | { | |
7351 | int i; | |
c5aa993b | 7352 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7353 | target_resources_ok = |
7354 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7355 | i + 1, 0); | |
c906108c | 7356 | if (target_resources_ok == 0) |
c5aa993b | 7357 | error ("No hardware breakpoint support in the target."); |
c906108c | 7358 | else if (target_resources_ok < 0) |
c5aa993b | 7359 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7360 | } |
7361 | ||
b5de0fa7 EZ |
7362 | if (bpt->enable_state != bp_permanent) |
7363 | bpt->enable_state = bp_enabled; | |
c906108c | 7364 | bpt->disposition = disposition; |
9f60f21b | 7365 | check_duplicates (bpt); |
c906108c SS |
7366 | breakpoints_changed (); |
7367 | ||
53a5351d JM |
7368 | if (bpt->type == bp_watchpoint || |
7369 | bpt->type == bp_hardware_watchpoint || | |
7370 | bpt->type == bp_read_watchpoint || | |
7371 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7372 | { |
7373 | if (bpt->exp_valid_block != NULL) | |
7374 | { | |
7375 | struct frame_info *fr = | |
101dcfbe | 7376 | fr = frame_find_by_id (bpt->watchpoint_frame); |
c906108c SS |
7377 | if (fr == NULL) |
7378 | { | |
7379 | printf_filtered ("\ | |
7380 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7381 | is valid is not currently in scope.\n", bpt->number); | |
b5de0fa7 | 7382 | bpt->enable_state = bp_disabled; |
c906108c SS |
7383 | return; |
7384 | } | |
7385 | ||
6e7f8b9c AC |
7386 | save_selected_frame = deprecated_selected_frame; |
7387 | save_selected_frame_level = frame_relative_level (deprecated_selected_frame); | |
0f7d239c | 7388 | select_frame (fr); |
c906108c SS |
7389 | } |
7390 | ||
7391 | value_free (bpt->val); | |
7392 | mark = value_mark (); | |
7393 | bpt->val = evaluate_expression (bpt->exp); | |
7394 | release_value (bpt->val); | |
7395 | if (VALUE_LAZY (bpt->val)) | |
7396 | value_fetch_lazy (bpt->val); | |
7397 | ||
7398 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7399 | bpt->type == bp_read_watchpoint || |
7400 | bpt->type == bp_access_watchpoint) | |
7401 | { | |
7402 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7403 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7404 | ||
7405 | /* Hack around 'unused var' error for some targets here */ | |
7406 | (void) mem_cnt, i; | |
7407 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7408 | bpt->type, i + mem_cnt, other_type_used); | |
7409 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7410 | bp_watchpoint in the following condition */ | |
7411 | if (target_resources_ok < 0) | |
7412 | { | |
7413 | printf_filtered ("\ | |
c906108c SS |
7414 | Cannot enable watchpoint %d because target watch resources\n\ |
7415 | have been allocated for other watchpoints.\n", bpt->number); | |
b5de0fa7 | 7416 | bpt->enable_state = bp_disabled; |
c5aa993b JM |
7417 | value_free_to_mark (mark); |
7418 | return; | |
7419 | } | |
7420 | } | |
c906108c SS |
7421 | |
7422 | if (save_selected_frame_level >= 0) | |
0f7d239c | 7423 | select_frame (save_selected_frame); |
c906108c SS |
7424 | value_free_to_mark (mark); |
7425 | } | |
7426 | if (modify_breakpoint_hook) | |
7427 | modify_breakpoint_hook (bpt); | |
104c1213 | 7428 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7429 | } |
7430 | ||
7431 | void | |
fba45db2 | 7432 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7433 | { |
7434 | do_enable_breakpoint (bpt, bpt->disposition); | |
7435 | } | |
7436 | ||
7437 | /* The enable command enables the specified breakpoints (or all defined | |
7438 | breakpoints) so they once again become (or continue to be) effective | |
7439 | in stopping the inferior. */ | |
7440 | ||
c906108c | 7441 | static void |
fba45db2 | 7442 | enable_command (char *args, int from_tty) |
c906108c | 7443 | { |
52f0bd74 | 7444 | struct breakpoint *bpt; |
c906108c SS |
7445 | if (args == 0) |
7446 | ALL_BREAKPOINTS (bpt) | |
7447 | switch (bpt->type) | |
c5aa993b JM |
7448 | { |
7449 | case bp_none: | |
53a5351d JM |
7450 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7451 | bpt->number); | |
c5aa993b JM |
7452 | continue; |
7453 | case bp_breakpoint: | |
7454 | case bp_catch_load: | |
7455 | case bp_catch_unload: | |
7456 | case bp_catch_fork: | |
7457 | case bp_catch_vfork: | |
7458 | case bp_catch_exec: | |
7459 | case bp_catch_catch: | |
7460 | case bp_catch_throw: | |
7461 | case bp_hardware_breakpoint: | |
7462 | case bp_watchpoint: | |
7463 | case bp_hardware_watchpoint: | |
7464 | case bp_read_watchpoint: | |
7465 | case bp_access_watchpoint: | |
7466 | enable_breakpoint (bpt); | |
7467 | default: | |
7468 | continue; | |
7469 | } | |
c906108c SS |
7470 | else |
7471 | map_breakpoint_numbers (args, enable_breakpoint); | |
7472 | } | |
7473 | ||
7474 | static void | |
fba45db2 | 7475 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7476 | { |
b5de0fa7 | 7477 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7478 | } |
7479 | ||
c906108c | 7480 | static void |
fba45db2 | 7481 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7482 | { |
7483 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7484 | } | |
7485 | ||
7486 | static void | |
fba45db2 | 7487 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7488 | { |
b5de0fa7 | 7489 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7490 | } |
7491 | ||
c906108c | 7492 | static void |
fba45db2 | 7493 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7494 | { |
7495 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7496 | } | |
7497 | \f | |
7498 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7499 | ||
7500 | struct symtabs_and_lines | |
fba45db2 | 7501 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7502 | { |
7503 | struct symtabs_and_lines sals; | |
7504 | if (string == 0) | |
7505 | error ("Empty line specification."); | |
7506 | if (default_breakpoint_valid) | |
7507 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7508 | default_breakpoint_symtab, |
7509 | default_breakpoint_line, | |
c5aa993b | 7510 | (char ***) NULL); |
c906108c SS |
7511 | else |
7512 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7513 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7514 | if (*string) |
7515 | error ("Junk at end of line specification: %s", string); | |
7516 | return sals; | |
7517 | } | |
7518 | \f | |
7519 | void | |
fba45db2 | 7520 | _initialize_breakpoint (void) |
c906108c SS |
7521 | { |
7522 | struct cmd_list_element *c; | |
7523 | ||
7524 | breakpoint_chain = 0; | |
7525 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7526 | before a breakpoint is set. */ | |
7527 | breakpoint_count = 0; | |
7528 | ||
7529 | add_com ("ignore", class_breakpoint, ignore_command, | |
7530 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7531 | Usage is `ignore N COUNT'."); | |
7532 | if (xdb_commands) | |
c5aa993b | 7533 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7534 | |
7535 | add_com ("commands", class_breakpoint, commands_command, | |
7536 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7537 | Give breakpoint number as argument after \"commands\".\n\ | |
7538 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7539 | The commands themselves follow starting on the next line.\n\ | |
7540 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7541 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7542 | then no output is printed when it is hit, except what the commands print."); | |
7543 | ||
7544 | add_com ("condition", class_breakpoint, condition_command, | |
7545 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7546 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7547 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7548 | |
c94fdfd0 EZ |
7549 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7550 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7551 | Like \"break\" except the breakpoint is only temporary,\n\ |
7552 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7553 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7554 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7555 | |
c94fdfd0 EZ |
7556 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7557 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7558 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7559 | some target hardware may not have this support."); | |
5ba2abeb | 7560 | set_cmd_completer (c, location_completer); |
c906108c | 7561 | |
c94fdfd0 EZ |
7562 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7563 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7564 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7565 | so it will be deleted when hit."); | |
5ba2abeb | 7566 | set_cmd_completer (c, location_completer); |
c906108c SS |
7567 | |
7568 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7569 | "Enable some breakpoints.\n\ | |
7570 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7571 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7572 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7573 | With a subcommand you can enable temporarily.", | |
7574 | &enablelist, "enable ", 1, &cmdlist); | |
7575 | if (xdb_commands) | |
c5aa993b JM |
7576 | add_com ("ab", class_breakpoint, enable_command, |
7577 | "Enable some breakpoints.\n\ | |
c906108c SS |
7578 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7579 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7580 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7581 | With a subcommand you can enable temporarily."); | |
7582 | ||
7583 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7584 | ||
7585 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7586 | "Enable some breakpoints.\n\ |
c906108c SS |
7587 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7588 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7589 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7590 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7591 | |
7592 | add_cmd ("once", no_class, enable_once_command, | |
7593 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7594 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7595 | &enablebreaklist); | |
7596 | ||
7597 | add_cmd ("delete", no_class, enable_delete_command, | |
7598 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7599 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7600 | &enablebreaklist); | |
7601 | ||
7602 | add_cmd ("delete", no_class, enable_delete_command, | |
7603 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7604 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7605 | &enablelist); | |
7606 | ||
7607 | add_cmd ("once", no_class, enable_once_command, | |
7608 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7609 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7610 | &enablelist); | |
7611 | ||
7612 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7613 | "Disable some breakpoints.\n\ |
c906108c SS |
7614 | Arguments are breakpoint numbers with spaces in between.\n\ |
7615 | To disable all breakpoints, give no argument.\n\ | |
7616 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7617 | &disablelist, "disable ", 1, &cmdlist); | |
7618 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7619 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7620 | if (xdb_commands) | |
c5aa993b JM |
7621 | add_com ("sb", class_breakpoint, disable_command, |
7622 | "Disable some breakpoints.\n\ | |
c906108c SS |
7623 | Arguments are breakpoint numbers with spaces in between.\n\ |
7624 | To disable all breakpoints, give no argument.\n\ | |
7625 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7626 | ||
7627 | add_cmd ("breakpoints", class_alias, disable_command, | |
7628 | "Disable some breakpoints.\n\ | |
7629 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7630 | To disable all breakpoints, give no argument.\n\ | |
7631 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7632 | This command may be abbreviated \"disable\".", | |
7633 | &disablelist); | |
7634 | ||
7635 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7636 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7637 | Arguments are breakpoint numbers with spaces in between.\n\ |
7638 | To delete all breakpoints, give no argument.\n\ | |
7639 | \n\ | |
7640 | Also a prefix command for deletion of other GDB objects.\n\ | |
7641 | The \"unset\" command is also an alias for \"delete\".", | |
7642 | &deletelist, "delete ", 1, &cmdlist); | |
7643 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7644 | if (xdb_commands) | |
7645 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7646 | "Delete some breakpoints.\n\ |
c906108c SS |
7647 | Arguments are breakpoint numbers with spaces in between.\n\ |
7648 | To delete all breakpoints, give no argument.\n"); | |
7649 | ||
7650 | add_cmd ("breakpoints", class_alias, delete_command, | |
7651 | "Delete some breakpoints or auto-display expressions.\n\ | |
7652 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7653 | To delete all breakpoints, give no argument.\n\ | |
7654 | This command may be abbreviated \"delete\".", | |
7655 | &deletelist); | |
7656 | ||
7657 | add_com ("clear", class_breakpoint, clear_command, | |
7658 | concat ("Clear breakpoint at specified line or function.\n\ | |
7659 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7660 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7661 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7662 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7663 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7664 | is executing in.\n\ |
7665 | \n\ | |
7666 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7667 | ||
c94fdfd0 EZ |
7668 | c = add_com ("break", class_breakpoint, break_command, |
7669 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7670 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7671 | If line number is specified, break at start of code for that line.\n\ | |
7672 | If function is specified, break at start of code for that function.\n\ | |
7673 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7674 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7675 | This is useful for breaking on return to a stack frame.\n\ |
7676 | \n\ | |
7677 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7678 | \n\ | |
7679 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7680 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7681 | |
c906108c SS |
7682 | add_com_alias ("b", "break", class_run, 1); |
7683 | add_com_alias ("br", "break", class_run, 1); | |
7684 | add_com_alias ("bre", "break", class_run, 1); | |
7685 | add_com_alias ("brea", "break", class_run, 1); | |
7686 | ||
502fd408 | 7687 | if (xdb_commands) |
c906108c SS |
7688 | { |
7689 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7690 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7691 | } |
7692 | ||
7693 | if (dbx_commands) | |
7694 | { | |
c5aa993b JM |
7695 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7696 | "Break in function/address or break at a line in the current file.", | |
7697 | &stoplist, "stop ", 1, &cmdlist); | |
7698 | add_cmd ("in", class_breakpoint, stopin_command, | |
7699 | "Break in function or address.\n", &stoplist); | |
7700 | add_cmd ("at", class_breakpoint, stopat_command, | |
7701 | "Break at a line in the current file.\n", &stoplist); | |
7702 | add_com ("status", class_info, breakpoints_info, | |
7703 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7704 | The \"Type\" column indicates one of:\n\ |
7705 | \tbreakpoint - normal breakpoint\n\ | |
7706 | \twatchpoint - watchpoint\n\ | |
7707 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7708 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7709 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7710 | address and file/line number respectively.\n\n", | |
c5aa993b | 7711 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7712 | are set to the address of the last breakpoint listed.\n\n\ |
7713 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7714 | breakpoint set.", NULL)); | |
7715 | } | |
7716 | ||
7717 | add_info ("breakpoints", breakpoints_info, | |
7718 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7719 | The \"Type\" column indicates one of:\n\ | |
7720 | \tbreakpoint - normal breakpoint\n\ | |
7721 | \twatchpoint - watchpoint\n\ | |
7722 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7723 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7724 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7725 | address and file/line number respectively.\n\n", | |
c5aa993b | 7726 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7727 | are set to the address of the last breakpoint listed.\n\n\ |
7728 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7729 | breakpoint set.", NULL)); | |
7730 | ||
7731 | if (xdb_commands) | |
c5aa993b JM |
7732 | add_com ("lb", class_breakpoint, breakpoints_info, |
7733 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7734 | The \"Type\" column indicates one of:\n\ |
7735 | \tbreakpoint - normal breakpoint\n\ | |
7736 | \twatchpoint - watchpoint\n\ | |
7737 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7738 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7739 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7740 | address and file/line number respectively.\n\n", | |
c5aa993b | 7741 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7742 | are set to the address of the last breakpoint listed.\n\n\ |
7743 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7744 | breakpoint set.", NULL)); | |
7745 | ||
c906108c | 7746 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7747 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7748 | The \"Type\" column indicates one of:\n\ |
7749 | \tbreakpoint - normal breakpoint\n\ | |
7750 | \twatchpoint - watchpoint\n\ | |
7751 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7752 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7753 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7754 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7755 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7756 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7757 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7758 | address and file/line number respectively.\n\n", | |
c5aa993b | 7759 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7760 | are set to the address of the last breakpoint listed.\n\n\ |
7761 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7762 | breakpoint set.", NULL), | |
7763 | &maintenanceinfolist); | |
7764 | ||
c906108c | 7765 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7766 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7767 | Raised signals may be caught:\n\ |
7768 | \tcatch signal - all signals\n\ | |
7769 | \tcatch signal <signame> - a particular signal\n\ | |
7770 | Raised exceptions may be caught:\n\ | |
7771 | \tcatch throw - all exceptions, when thrown\n\ | |
7772 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7773 | \tcatch catch - all exceptions, when caught\n\ | |
7774 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7775 | Thread or process events may be caught:\n\ | |
7776 | \tcatch thread_start - any threads, just after creation\n\ | |
7777 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7778 | \tcatch thread_join - any threads, just after joins\n\ | |
7779 | Process events may be caught:\n\ | |
7780 | \tcatch start - any processes, just after creation\n\ | |
7781 | \tcatch exit - any processes, just before expiration\n\ | |
7782 | \tcatch fork - calls to fork()\n\ | |
7783 | \tcatch vfork - calls to vfork()\n\ | |
7784 | \tcatch exec - calls to exec()\n\ | |
7785 | Dynamically-linked library events may be caught:\n\ | |
7786 | \tcatch load - loads of any library\n\ | |
7787 | \tcatch load <libname> - loads of a particular library\n\ | |
7788 | \tcatch unload - unloads of any library\n\ | |
7789 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7790 | The act of your program's execution stopping may also be caught:\n\ | |
7791 | \tcatch stop\n\n\ | |
7792 | C++ exceptions may be caught:\n\ | |
7793 | \tcatch throw - all exceptions, when thrown\n\ | |
7794 | \tcatch catch - all exceptions, when caught\n\ | |
7795 | \n\ | |
7796 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7797 | after a fork or vfork is caught.\n\n\ | |
7798 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7799 | |
c906108c | 7800 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7801 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7802 | Args like \"catch\" command.\n\ |
7803 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7804 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7805 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7806 | |
c94fdfd0 EZ |
7807 | c = add_com ("watch", class_breakpoint, watch_command, |
7808 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7809 | A watchpoint stops execution of your program whenever the value of\n\ |
7810 | an expression changes."); | |
5ba2abeb | 7811 | set_cmd_completer (c, location_completer); |
c906108c | 7812 | |
c94fdfd0 EZ |
7813 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7814 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7815 | A watchpoint stops execution of your program whenever the value of\n\ |
7816 | an expression is read."); | |
5ba2abeb | 7817 | set_cmd_completer (c, location_completer); |
c906108c | 7818 | |
c94fdfd0 EZ |
7819 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7820 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7821 | A watchpoint stops execution of your program whenever the value of\n\ |
7822 | an expression is either read or written."); | |
5ba2abeb | 7823 | set_cmd_completer (c, location_completer); |
c906108c SS |
7824 | |
7825 | add_info ("watchpoints", breakpoints_info, | |
7826 | "Synonym for ``info breakpoints''."); | |
7827 | ||
7828 | ||
7829 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7830 | (char *) &can_use_hw_watchpoints, |
7831 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7832 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7833 | such is available. (However, any hardware watchpoints that were\n\ | |
7834 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7835 | hardware.)", | |
c5aa993b | 7836 | &setlist); |
c906108c SS |
7837 | add_show_from_set (c, &showlist); |
7838 | ||
7839 | can_use_hw_watchpoints = 1; | |
7840 | } |