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, | |
e74f0f02 DJ |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
5 | Free Software 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" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
c906108c | 55 | |
104c1213 JM |
56 | #include "gdb-events.h" |
57 | ||
c906108c SS |
58 | /* Prototypes for local functions. */ |
59 | ||
c2c6d25f JM |
60 | static void until_break_command_continuation (struct continuation_arg *arg); |
61 | ||
a14ed312 | 62 | static void catch_command_1 (char *, int, int); |
c906108c | 63 | |
a14ed312 | 64 | static void enable_delete_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 67 | |
a14ed312 | 68 | static void enable_once_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 71 | |
a14ed312 | 72 | static void disable_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 77 | |
a14ed312 | 78 | static void ignore_command (char *, int); |
c906108c | 79 | |
4efb68b1 | 80 | static int breakpoint_re_set_one (void *); |
c906108c | 81 | |
a14ed312 | 82 | static void clear_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void catch_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void watch_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 89 | |
0101ce28 | 90 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 91 | |
a14ed312 | 92 | static void mention (struct breakpoint *); |
c906108c | 93 | |
4d28f7a8 | 94 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 95 | |
9f60f21b | 96 | static void check_duplicates (struct breakpoint *); |
c906108c | 97 | |
76897487 KB |
98 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
99 | ||
88f7da05 KB |
100 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
101 | enum bptype bptype); | |
76897487 | 102 | |
a14ed312 | 103 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 104 | |
a14ed312 | 105 | static void breakpoints_info (char *, int); |
c906108c | 106 | |
a14ed312 | 107 | static void breakpoint_1 (int, int); |
c906108c | 108 | |
a14ed312 | 109 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 110 | |
4efb68b1 | 111 | static int breakpoint_cond_eval (void *); |
c906108c | 112 | |
4efb68b1 | 113 | static void cleanup_executing_breakpoints (void *); |
c906108c | 114 | |
a14ed312 | 115 | static void commands_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | static void condition_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | static int get_number_trailer (char **, int); |
c906108c | 120 | |
0101ce28 JJ |
121 | static int do_captured_parse_breakpoint (struct ui_out *, void *); |
122 | ||
a14ed312 | 123 | void set_breakpoint_count (int); |
c906108c | 124 | |
c5aa993b JM |
125 | typedef enum |
126 | { | |
127 | mark_inserted, | |
128 | mark_uninserted | |
129 | } | |
130 | insertion_state_t; | |
c906108c | 131 | |
0bde7532 | 132 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 133 | |
a14ed312 | 134 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
135 | |
136 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 137 | |
c5aa993b JM |
138 | typedef struct |
139 | { | |
140 | enum exception_event_kind kind; | |
b5de0fa7 | 141 | int enable_p; |
c5aa993b JM |
142 | } |
143 | args_for_catchpoint_enable; | |
c906108c | 144 | |
4efb68b1 | 145 | static int watchpoint_check (void *); |
c906108c | 146 | |
4efb68b1 | 147 | static int cover_target_enable_exception_callback (void *); |
c906108c | 148 | |
a14ed312 | 149 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 150 | |
a14ed312 | 151 | static void create_longjmp_breakpoint (char *); |
c906108c | 152 | |
1900040c MS |
153 | static void create_overlay_event_breakpoint (char *); |
154 | ||
a14ed312 | 155 | static int hw_breakpoint_used_count (void); |
c906108c | 156 | |
a14ed312 | 157 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 158 | |
a14ed312 | 159 | static void hbreak_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void thbreak_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void watch_command_1 (char *, int, int); |
c906108c | 164 | |
a14ed312 | 165 | static void rwatch_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void awatch_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 170 | |
a14ed312 KB |
171 | static void solib_load_unload_1 (char *hookname, |
172 | int tempflag, | |
173 | char *dll_pathname, | |
174 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 175 | |
a14ed312 KB |
176 | static void create_fork_vfork_event_catchpoint (int tempflag, |
177 | char *cond_string, | |
178 | enum bptype bp_kind); | |
7a292a7a | 179 | |
a14ed312 | 180 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 181 | |
a14ed312 | 182 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 187 | |
a14ed312 | 188 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 191 | |
d85310f7 MS |
192 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
193 | enum exception_event_kind ex_event, | |
194 | struct symtab_and_line *sal); | |
7a292a7a | 195 | |
d85310f7 MS |
196 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
197 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 198 | |
a14ed312 | 199 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 200 | |
a14ed312 | 201 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 202 | |
c906108c SS |
203 | /* Prototypes for exported functions. */ |
204 | ||
c906108c SS |
205 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
206 | if such is available. */ | |
207 | static int can_use_hw_watchpoints; | |
208 | ||
fa8d40ab JJ |
209 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
210 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
211 | for unrecognized breakpoint locations. | |
212 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
213 | static enum auto_boolean pending_break_support; | |
214 | ||
a14ed312 | 215 | void _initialize_breakpoint (void); |
c906108c | 216 | |
c5aa993b | 217 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 218 | |
c906108c SS |
219 | /* Are we executing breakpoint commands? */ |
220 | static int executing_breakpoint_commands; | |
221 | ||
c02f5703 MS |
222 | /* Are overlay event breakpoints enabled? */ |
223 | static int overlay_events_enabled; | |
224 | ||
c906108c SS |
225 | /* Walk the following statement or block through all breakpoints. |
226 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
227 | breakpoint. */ | |
228 | ||
5c44784c | 229 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 230 | |
5c44784c JM |
231 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
232 | for (B = breakpoint_chain; \ | |
233 | B ? (TMP=B->next, 1): 0; \ | |
234 | B = TMP) | |
c906108c | 235 | |
7cc221ef DJ |
236 | /* Similar iterators for the low-level breakpoints. */ |
237 | ||
238 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
239 | ||
240 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
241 | for (B = bp_location_chain; \ | |
242 | B ? (TMP=B->next, 1): 0; \ | |
243 | B = TMP) | |
244 | ||
c906108c SS |
245 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
246 | ||
247 | int show_breakpoint_hit_counts = 1; | |
248 | ||
7cc221ef | 249 | /* Chains of all breakpoints defined. */ |
c906108c SS |
250 | |
251 | struct breakpoint *breakpoint_chain; | |
252 | ||
7cc221ef DJ |
253 | struct bp_location *bp_location_chain; |
254 | ||
c906108c SS |
255 | /* Number of last breakpoint made. */ |
256 | ||
257 | int breakpoint_count; | |
258 | ||
c5aa993b JM |
259 | /* Pointer to current exception event record */ |
260 | static struct exception_event_record *current_exception_event; | |
c906108c | 261 | |
f83f82bc AC |
262 | /* Indicator of whether exception catchpoints should be nuked between |
263 | runs of a program. */ | |
264 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 265 | |
c906108c | 266 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
267 | reinitialized -- e.g. when program is re-run. */ |
268 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
269 | |
270 | /* This function returns a pointer to the string representation of the | |
271 | pathname of the dynamically-linked library that has just been | |
272 | loaded. | |
273 | ||
274 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
275 | or undefined results are guaranteed. | |
276 | ||
277 | This string's contents are only valid immediately after the | |
278 | inferior has stopped in the dynamic linker hook, and becomes | |
279 | invalid as soon as the inferior is continued. Clients should make | |
280 | a copy of this string if they wish to continue the inferior and | |
281 | then access the string. */ | |
282 | ||
283 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
284 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
285 | #endif | |
286 | ||
287 | /* This function returns a pointer to the string representation of the | |
288 | pathname of the dynamically-linked library that has just been | |
289 | unloaded. | |
290 | ||
291 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
292 | TRUE, or undefined results are guaranteed. | |
293 | ||
294 | This string's contents are only valid immediately after the | |
295 | inferior has stopped in the dynamic linker hook, and becomes | |
296 | invalid as soon as the inferior is continued. Clients should make | |
297 | a copy of this string if they wish to continue the inferior and | |
298 | then access the string. */ | |
299 | ||
300 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
301 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
302 | #endif | |
303 | ||
304 | /* This function is called by the "catch load" command. It allows the | |
305 | debugger to be notified by the dynamic linker when a specified | |
306 | library file (or any library file, if filename is NULL) is loaded. */ | |
307 | ||
308 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
309 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
310 | error ("catch of library loads not yet implemented on this platform") | |
311 | #endif | |
312 | ||
313 | /* This function is called by the "catch unload" command. It allows | |
314 | the debugger to be notified by the dynamic linker when a specified | |
315 | library file (or any library file, if filename is NULL) is | |
316 | unloaded. */ | |
317 | ||
318 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
319 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
320 | error ("catch of library unloads not yet implemented on this platform") | |
321 | #endif | |
322 | ||
468d015d JJ |
323 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
324 | static int | |
325 | breakpoint_enabled (struct breakpoint *b) | |
326 | { | |
0101ce28 | 327 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
328 | } |
329 | ||
c906108c SS |
330 | /* Set breakpoint count to NUM. */ |
331 | ||
332 | void | |
fba45db2 | 333 | set_breakpoint_count (int num) |
c906108c SS |
334 | { |
335 | breakpoint_count = num; | |
336 | set_internalvar (lookup_internalvar ("bpnum"), | |
337 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
338 | } | |
339 | ||
340 | /* Used in run_command to zero the hit count when a new run starts. */ | |
341 | ||
342 | void | |
fba45db2 | 343 | clear_breakpoint_hit_counts (void) |
c906108c SS |
344 | { |
345 | struct breakpoint *b; | |
346 | ||
347 | ALL_BREAKPOINTS (b) | |
348 | b->hit_count = 0; | |
349 | } | |
350 | ||
351 | /* Default address, symtab and line to put a breakpoint at | |
352 | for "break" command with no arg. | |
353 | if default_breakpoint_valid is zero, the other three are | |
354 | not valid, and "break" with no arg is an error. | |
355 | ||
356 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
357 | ||
358 | int default_breakpoint_valid; | |
359 | CORE_ADDR default_breakpoint_address; | |
360 | struct symtab *default_breakpoint_symtab; | |
361 | int default_breakpoint_line; | |
362 | \f | |
363 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
364 | Advance *PP after the string and any trailing whitespace. | |
365 | ||
366 | Currently the string can either be a number or "$" followed by the name | |
367 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
368 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
369 | ||
370 | TRAILER is a character which can be found after the number; most | |
371 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 372 | static int |
fba45db2 | 373 | get_number_trailer (char **pp, int trailer) |
c906108c | 374 | { |
5c44784c | 375 | int retval = 0; /* default */ |
c906108c SS |
376 | char *p = *pp; |
377 | ||
378 | if (p == NULL) | |
379 | /* Empty line means refer to the last breakpoint. */ | |
380 | return breakpoint_count; | |
381 | else if (*p == '$') | |
382 | { | |
383 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 384 | to pass to lookup_internalvar(). */ |
c906108c SS |
385 | char *varname; |
386 | char *start = ++p; | |
278cd55f | 387 | struct value *val; |
c906108c SS |
388 | |
389 | while (isalnum (*p) || *p == '_') | |
390 | p++; | |
391 | varname = (char *) alloca (p - start + 1); | |
392 | strncpy (varname, start, p - start); | |
393 | varname[p - start] = '\0'; | |
394 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 395 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
396 | retval = (int) value_as_long (val); |
397 | else | |
398 | { | |
399 | printf_filtered ("Convenience variable must have integer value.\n"); | |
400 | retval = 0; | |
401 | } | |
c906108c SS |
402 | } |
403 | else | |
404 | { | |
405 | if (*p == '-') | |
406 | ++p; | |
407 | while (*p >= '0' && *p <= '9') | |
408 | ++p; | |
409 | if (p == *pp) | |
410 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
411 | { |
412 | /* Skip non-numeric token */ | |
413 | while (*p && !isspace((int) *p)) | |
414 | ++p; | |
415 | /* Return zero, which caller must interpret as error. */ | |
416 | retval = 0; | |
417 | } | |
418 | else | |
419 | retval = atoi (*pp); | |
420 | } | |
421 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
422 | { | |
423 | /* Trailing junk: return 0 and let caller print error msg. */ | |
424 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
425 | ++p; | |
426 | retval = 0; | |
c906108c | 427 | } |
c906108c SS |
428 | while (isspace (*p)) |
429 | p++; | |
430 | *pp = p; | |
431 | return retval; | |
432 | } | |
5c44784c | 433 | |
11cf8741 | 434 | |
5c44784c JM |
435 | /* Like get_number_trailer, but don't allow a trailer. */ |
436 | int | |
fba45db2 | 437 | get_number (char **pp) |
5c44784c JM |
438 | { |
439 | return get_number_trailer (pp, '\0'); | |
440 | } | |
441 | ||
442 | /* Parse a number or a range. | |
443 | * A number will be of the form handled by get_number. | |
444 | * A range will be of the form <number1> - <number2>, and | |
445 | * will represent all the integers between number1 and number2, | |
446 | * inclusive. | |
447 | * | |
448 | * While processing a range, this fuction is called iteratively; | |
449 | * At each call it will return the next value in the range. | |
450 | * | |
451 | * At the beginning of parsing a range, the char pointer PP will | |
452 | * be advanced past <number1> and left pointing at the '-' token. | |
453 | * Subsequent calls will not advance the pointer until the range | |
454 | * is completed. The call that completes the range will advance | |
455 | * pointer PP past <number2>. | |
456 | */ | |
457 | ||
458 | int | |
fba45db2 | 459 | get_number_or_range (char **pp) |
5c44784c JM |
460 | { |
461 | static int last_retval, end_value; | |
462 | static char *end_ptr; | |
463 | static int in_range = 0; | |
464 | ||
465 | if (**pp != '-') | |
466 | { | |
467 | /* Default case: pp is pointing either to a solo number, | |
468 | or to the first number of a range. */ | |
469 | last_retval = get_number_trailer (pp, '-'); | |
470 | if (**pp == '-') | |
471 | { | |
472 | char **temp; | |
473 | ||
474 | /* This is the start of a range (<number1> - <number2>). | |
475 | Skip the '-', parse and remember the second number, | |
476 | and also remember the end of the final token. */ | |
477 | ||
478 | temp = &end_ptr; | |
479 | end_ptr = *pp + 1; | |
480 | while (isspace ((int) *end_ptr)) | |
481 | end_ptr++; /* skip white space */ | |
482 | end_value = get_number (temp); | |
483 | if (end_value < last_retval) | |
484 | { | |
485 | error ("inverted range"); | |
486 | } | |
487 | else if (end_value == last_retval) | |
488 | { | |
489 | /* degenerate range (number1 == number2). Advance the | |
490 | token pointer so that the range will be treated as a | |
491 | single number. */ | |
492 | *pp = end_ptr; | |
493 | } | |
494 | else | |
495 | in_range = 1; | |
496 | } | |
497 | } | |
498 | else if (! in_range) | |
499 | error ("negative value"); | |
500 | else | |
501 | { | |
502 | /* pp points to the '-' that betokens a range. All | |
503 | number-parsing has already been done. Return the next | |
504 | integer value (one greater than the saved previous value). | |
505 | Do not advance the token pointer 'pp' until the end of range | |
506 | is reached. */ | |
507 | ||
508 | if (++last_retval == end_value) | |
509 | { | |
510 | /* End of range reached; advance token pointer. */ | |
511 | *pp = end_ptr; | |
512 | in_range = 0; | |
513 | } | |
514 | } | |
515 | return last_retval; | |
516 | } | |
517 | ||
518 | ||
c906108c SS |
519 | \f |
520 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
521 | ||
522 | static void | |
fba45db2 | 523 | condition_command (char *arg, int from_tty) |
c906108c | 524 | { |
52f0bd74 | 525 | struct breakpoint *b; |
c906108c | 526 | char *p; |
52f0bd74 | 527 | int bnum; |
c906108c SS |
528 | |
529 | if (arg == 0) | |
530 | error_no_arg ("breakpoint number"); | |
531 | ||
532 | p = arg; | |
533 | bnum = get_number (&p); | |
5c44784c JM |
534 | if (bnum == 0) |
535 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
536 | |
537 | ALL_BREAKPOINTS (b) | |
538 | if (b->number == bnum) | |
c5aa993b JM |
539 | { |
540 | if (b->cond) | |
541 | { | |
b8c9b27d | 542 | xfree (b->cond); |
c5aa993b JM |
543 | b->cond = 0; |
544 | } | |
545 | if (b->cond_string != NULL) | |
b8c9b27d | 546 | xfree (b->cond_string); |
c906108c | 547 | |
c5aa993b JM |
548 | if (*p == 0) |
549 | { | |
550 | b->cond = 0; | |
551 | b->cond_string = NULL; | |
552 | if (from_tty) | |
553 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
554 | } | |
555 | else | |
556 | { | |
557 | arg = p; | |
558 | /* I don't know if it matters whether this is the string the user | |
559 | typed in or the decompiled expression. */ | |
560 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
561 | if (!b->pending) |
562 | { | |
563 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
564 | if (*arg) | |
565 | error ("Junk at end of expression"); | |
566 | } | |
c5aa993b JM |
567 | } |
568 | breakpoints_changed (); | |
221ea385 | 569 | breakpoint_modify_event (b->number); |
c5aa993b JM |
570 | return; |
571 | } | |
c906108c SS |
572 | |
573 | error ("No breakpoint number %d.", bnum); | |
574 | } | |
575 | ||
c906108c | 576 | static void |
fba45db2 | 577 | commands_command (char *arg, int from_tty) |
c906108c | 578 | { |
52f0bd74 | 579 | struct breakpoint *b; |
c906108c | 580 | char *p; |
52f0bd74 | 581 | int bnum; |
c906108c SS |
582 | struct command_line *l; |
583 | ||
584 | /* If we allowed this, we would have problems with when to | |
585 | free the storage, if we change the commands currently | |
586 | being read from. */ | |
587 | ||
588 | if (executing_breakpoint_commands) | |
589 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
590 | ||
591 | p = arg; | |
592 | bnum = get_number (&p); | |
5c44784c | 593 | |
c906108c SS |
594 | if (p && *p) |
595 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 596 | |
c906108c SS |
597 | ALL_BREAKPOINTS (b) |
598 | if (b->number == bnum) | |
9ebf4acf AC |
599 | { |
600 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
601 | bnum); | |
602 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
603 | l = read_command_lines (tmpbuf, from_tty); | |
604 | do_cleanups (cleanups); | |
605 | free_command_lines (&b->commands); | |
606 | b->commands = l; | |
607 | breakpoints_changed (); | |
608 | breakpoint_modify_event (b->number); | |
609 | return; | |
c5aa993b | 610 | } |
c906108c SS |
611 | error ("No breakpoint number %d.", bnum); |
612 | } | |
613 | \f | |
614 | /* Like target_read_memory() but if breakpoints are inserted, return | |
615 | the shadow contents instead of the breakpoints themselves. | |
616 | ||
617 | Read "memory data" from whatever target or inferior we have. | |
618 | Returns zero if successful, errno value if not. EIO is used | |
619 | for address out of bounds. If breakpoints are inserted, returns | |
620 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
621 | ||
622 | int | |
1f602b35 | 623 | deprecated_read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
624 | { |
625 | int status; | |
ffce0d52 | 626 | struct bp_location *b; |
c906108c SS |
627 | CORE_ADDR bp_addr = 0; |
628 | int bp_size = 0; | |
629 | ||
630 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
631 | /* No breakpoints on this machine. */ | |
632 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 633 | |
ffce0d52 | 634 | ALL_BP_LOCATIONS (b) |
c5aa993b | 635 | { |
ffce0d52 DJ |
636 | if (b->owner->type == bp_none) |
637 | warning ("reading through apparently deleted breakpoint #%d?", | |
638 | b->owner->number); | |
639 | ||
640 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 641 | continue; |
ffce0d52 | 642 | if (!b->inserted) |
c5aa993b JM |
643 | continue; |
644 | /* Addresses and length of the part of the breakpoint that | |
645 | we need to copy. */ | |
646 | /* XXXX The m68k, sh and h8300 have different local and remote | |
647 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
648 | correctly determine the breakpoints memory address and size | |
649 | for these targets. */ | |
ffce0d52 | 650 | bp_addr = b->address; |
c5aa993b JM |
651 | bp_size = 0; |
652 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
653 | continue; | |
654 | if (bp_size == 0) | |
655 | /* bp isn't valid */ | |
656 | continue; | |
657 | if (bp_addr + bp_size <= memaddr) | |
658 | /* The breakpoint is entirely before the chunk of memory we | |
659 | are reading. */ | |
660 | continue; | |
661 | if (bp_addr >= memaddr + len) | |
662 | /* The breakpoint is entirely after the chunk of memory we are | |
663 | reading. */ | |
664 | continue; | |
665 | /* Copy the breakpoint from the shadow contents, and recurse for | |
666 | the things before and after. */ | |
c906108c | 667 | { |
c5aa993b JM |
668 | /* Offset within shadow_contents. */ |
669 | int bptoffset = 0; | |
c906108c | 670 | |
c5aa993b JM |
671 | if (bp_addr < memaddr) |
672 | { | |
673 | /* Only copy the second part of the breakpoint. */ | |
674 | bp_size -= memaddr - bp_addr; | |
675 | bptoffset = memaddr - bp_addr; | |
676 | bp_addr = memaddr; | |
677 | } | |
678 | ||
679 | if (bp_addr + bp_size > memaddr + len) | |
680 | { | |
681 | /* Only copy the first part of the breakpoint. */ | |
682 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
683 | } | |
684 | ||
685 | memcpy (myaddr + bp_addr - memaddr, | |
ffce0d52 | 686 | b->shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
687 | |
688 | if (bp_addr > memaddr) | |
689 | { | |
690 | /* Copy the section of memory before the breakpoint. */ | |
1f602b35 | 691 | status = deprecated_read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
692 | if (status != 0) |
693 | return status; | |
694 | } | |
695 | ||
696 | if (bp_addr + bp_size < memaddr + len) | |
697 | { | |
698 | /* Copy the section of memory after the breakpoint. */ | |
1f602b35 | 699 | status = deprecated_read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
700 | myaddr + bp_addr + bp_size - memaddr, |
701 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
702 | if (status != 0) |
703 | return status; | |
704 | } | |
705 | return 0; | |
c906108c | 706 | } |
c5aa993b | 707 | } |
c906108c SS |
708 | /* Nothing overlaps. Just call read_memory_noerr. */ |
709 | return target_read_memory (memaddr, myaddr, len); | |
710 | } | |
c906108c | 711 | \f |
c5aa993b | 712 | |
687595f9 | 713 | /* A wrapper function for inserting catchpoints. */ |
3f8091c1 | 714 | static int |
687595f9 DJ |
715 | insert_catchpoint (struct ui_out *uo, void *args) |
716 | { | |
717 | struct breakpoint *b = (struct breakpoint *) args; | |
718 | int val = -1; | |
719 | ||
720 | switch (b->type) | |
721 | { | |
722 | case bp_catch_fork: | |
723 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
724 | break; | |
725 | case bp_catch_vfork: | |
726 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
727 | break; | |
728 | case bp_catch_exec: | |
729 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); | |
730 | break; | |
731 | default: | |
1171114a | 732 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); |
687595f9 DJ |
733 | break; |
734 | } | |
735 | ||
736 | if (val < 0) | |
2a78bfb5 | 737 | throw_reason (RETURN_ERROR); |
687595f9 DJ |
738 | |
739 | return 0; | |
740 | } | |
741 | ||
7270d8f2 OF |
742 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
743 | ||
744 | static void free_valchain (struct bp_location *b) | |
745 | { | |
746 | struct value *v; | |
747 | struct value *n; | |
748 | ||
749 | /* Free the saved value chain. We will construct a new one | |
750 | the next time the watchpoint is inserted. */ | |
751 | for (v = b->owner->val_chain; v; v = n) | |
752 | { | |
753 | n = v->next; | |
754 | value_free (v); | |
755 | } | |
756 | b->owner->val_chain = NULL; | |
757 | } | |
758 | ||
879bfdc2 DJ |
759 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
760 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
761 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
762 | ||
763 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
764 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 765 | static int |
879bfdc2 | 766 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
767 | struct ui_file *tmp_error_stream, |
768 | int *disabled_breaks, int *process_warning, | |
769 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
770 | { |
771 | int val = 0; | |
772 | ||
773 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
774 | breakpoints should not be inserted. */ | |
468d015d | 775 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
776 | return 0; |
777 | ||
778 | if (bpt->inserted || bpt->duplicate) | |
779 | return 0; | |
780 | ||
781 | if (bpt->loc_type == bp_loc_software_breakpoint | |
782 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
783 | { | |
784 | /* First check to see if we have to handle an overlay. */ | |
785 | if (overlay_debugging == ovly_off | |
786 | || bpt->section == NULL | |
787 | || !(section_is_overlay (bpt->section))) | |
788 | { | |
789 | /* No overlay handling: just set the breakpoint. */ | |
790 | ||
791 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
792 | val = target_insert_hw_breakpoint (bpt->address, | |
793 | bpt->shadow_contents); | |
794 | else | |
795 | val = target_insert_breakpoint (bpt->address, | |
796 | bpt->shadow_contents); | |
797 | } | |
798 | else | |
799 | { | |
800 | /* This breakpoint is in an overlay section. | |
801 | Shall we set a breakpoint at the LMA? */ | |
802 | if (!overlay_events_enabled) | |
803 | { | |
804 | /* Yes -- overlay event support is not active, | |
805 | so we must try to set a breakpoint at the LMA. | |
806 | This will not work for a hardware breakpoint. */ | |
807 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
808 | warning ("hardware breakpoint %d not supported in overlay!\n", | |
809 | bpt->owner->number); | |
810 | else | |
811 | { | |
812 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
813 | bpt->section); | |
814 | /* Set a software (trap) breakpoint at the LMA. */ | |
815 | val = target_insert_breakpoint (addr, bpt->shadow_contents); | |
816 | if (val != 0) | |
817 | fprintf_unfiltered (tmp_error_stream, | |
818 | "Overlay breakpoint %d failed: in ROM?", | |
819 | bpt->owner->number); | |
820 | } | |
821 | } | |
822 | /* Shall we set a breakpoint at the VMA? */ | |
823 | if (section_is_mapped (bpt->section)) | |
824 | { | |
825 | /* Yes. This overlay section is mapped into memory. */ | |
826 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
827 | val = target_insert_hw_breakpoint (bpt->address, | |
828 | bpt->shadow_contents); | |
829 | else | |
830 | val = target_insert_breakpoint (bpt->address, | |
831 | bpt->shadow_contents); | |
832 | } | |
833 | else | |
834 | { | |
835 | /* No. This breakpoint will not be inserted. | |
836 | No error, but do not mark the bp as 'inserted'. */ | |
837 | return 0; | |
838 | } | |
839 | } | |
840 | ||
841 | if (val) | |
842 | { | |
843 | /* Can't set the breakpoint. */ | |
844 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
845 | if (DISABLE_UNSETTABLE_BREAK (bpt->address)) | |
846 | { | |
847 | /* See also: disable_breakpoints_in_shlibs. */ | |
848 | val = 0; | |
849 | bpt->owner->enable_state = bp_shlib_disabled; | |
850 | if (!*disabled_breaks) | |
851 | { | |
852 | fprintf_unfiltered (tmp_error_stream, | |
853 | "Cannot insert breakpoint %d.\n", | |
854 | bpt->owner->number); | |
855 | fprintf_unfiltered (tmp_error_stream, | |
856 | "Temporarily disabling shared library breakpoints:\n"); | |
857 | } | |
858 | *disabled_breaks = 1; | |
859 | fprintf_unfiltered (tmp_error_stream, | |
860 | "breakpoint #%d\n", bpt->owner->number); | |
861 | } | |
862 | else | |
863 | #endif | |
864 | { | |
865 | #ifdef ONE_PROCESS_WRITETEXT | |
866 | *process_warning = 1; | |
867 | #endif | |
868 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
869 | { | |
870 | *hw_breakpoint_error = 1; | |
871 | fprintf_unfiltered (tmp_error_stream, | |
872 | "Cannot insert hardware breakpoint %d.\n", | |
873 | bpt->owner->number); | |
874 | } | |
875 | else | |
876 | { | |
877 | fprintf_unfiltered (tmp_error_stream, | |
878 | "Cannot insert breakpoint %d.\n", | |
879 | bpt->owner->number); | |
880 | fprintf_filtered (tmp_error_stream, | |
881 | "Error accessing memory address "); | |
882 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
883 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
884 | safe_strerror (val)); | |
885 | } | |
886 | ||
887 | } | |
888 | } | |
889 | else | |
890 | bpt->inserted = 1; | |
891 | ||
892 | return val; | |
893 | } | |
894 | ||
895 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
896 | /* NOTE drow/2003-09-08: This state only exists for removing | |
897 | watchpoints. It's not clear that it's necessary... */ | |
898 | && bpt->owner->disposition != disp_del_at_next_stop) | |
899 | { | |
900 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
901 | based on the expression. Ideally this should happen at a higher level, | |
902 | and there should be one bp_location for each computed address we | |
903 | must watch. As soon as a many-to-one mapping is available I'll | |
904 | convert this. */ | |
905 | ||
7789d0fa | 906 | int within_current_scope; |
879bfdc2 DJ |
907 | struct value *mark = value_mark (); |
908 | struct value *v; | |
7789d0fa | 909 | struct frame_id saved_frame_id; |
879bfdc2 | 910 | |
7789d0fa | 911 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
912 | evaluating the watchpoint expression on its own frame. */ |
913 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
914 | took a frame parameter, so that we didn't have to change the | |
915 | selected frame. */ | |
7789d0fa | 916 | saved_frame_id = get_frame_id (deprecated_selected_frame); |
879bfdc2 DJ |
917 | |
918 | /* Determine if the watchpoint is within scope. */ | |
919 | if (bpt->owner->exp_valid_block == NULL) | |
920 | within_current_scope = 1; | |
921 | else | |
922 | { | |
923 | struct frame_info *fi; | |
924 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
925 | within_current_scope = (fi != NULL); | |
926 | if (within_current_scope) | |
927 | select_frame (fi); | |
928 | } | |
929 | ||
930 | if (within_current_scope) | |
931 | { | |
7270d8f2 OF |
932 | free_valchain (bpt); |
933 | ||
879bfdc2 DJ |
934 | /* Evaluate the expression and cut the chain of values |
935 | produced off from the value chain. | |
936 | ||
937 | Make sure the value returned isn't lazy; we use | |
938 | laziness to determine what memory GDB actually needed | |
939 | in order to compute the value of the expression. */ | |
940 | v = evaluate_expression (bpt->owner->exp); | |
941 | VALUE_CONTENTS (v); | |
942 | value_release_to_mark (mark); | |
943 | ||
944 | bpt->owner->val_chain = v; | |
945 | bpt->inserted = 1; | |
946 | ||
947 | /* Look at each value on the value chain. */ | |
948 | for (; v; v = v->next) | |
949 | { | |
950 | /* If it's a memory location, and GDB actually needed | |
951 | its contents to evaluate the expression, then we | |
952 | must watch it. */ | |
953 | if (VALUE_LVAL (v) == lval_memory | |
954 | && ! VALUE_LAZY (v)) | |
955 | { | |
df407dfe | 956 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
957 | |
958 | /* We only watch structs and arrays if user asked | |
959 | for it explicitly, never if they just happen to | |
960 | appear in the middle of some value chain. */ | |
961 | if (v == bpt->owner->val_chain | |
962 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
963 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
964 | { | |
965 | CORE_ADDR addr; | |
966 | int len, type; | |
967 | ||
df407dfe AC |
968 | addr = VALUE_ADDRESS (v) + value_offset (v); |
969 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
970 | type = hw_write; |
971 | if (bpt->owner->type == bp_read_watchpoint) | |
972 | type = hw_read; | |
973 | else if (bpt->owner->type == bp_access_watchpoint) | |
974 | type = hw_access; | |
975 | ||
976 | val = target_insert_watchpoint (addr, len, type); | |
977 | if (val == -1) | |
978 | { | |
979 | /* Don't exit the loop, try to insert | |
980 | every value on the value chain. That's | |
981 | because we will be removing all the | |
982 | watches below, and removing a | |
983 | watchpoint we didn't insert could have | |
984 | adverse effects. */ | |
985 | bpt->inserted = 0; | |
986 | } | |
987 | val = 0; | |
988 | } | |
989 | } | |
990 | } | |
991 | /* Failure to insert a watchpoint on any memory value in the | |
992 | value chain brings us here. */ | |
993 | if (!bpt->inserted) | |
994 | { | |
0bde7532 | 995 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
996 | *hw_breakpoint_error = 1; |
997 | fprintf_unfiltered (tmp_error_stream, | |
998 | "Could not insert hardware watchpoint %d.\n", | |
999 | bpt->owner->number); | |
1000 | val = -1; | |
1001 | } | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | printf_filtered ("Hardware watchpoint %d deleted ", bpt->owner->number); | |
1006 | printf_filtered ("because the program has left the block \n"); | |
1007 | printf_filtered ("in which its expression is valid.\n"); | |
1008 | if (bpt->owner->related_breakpoint) | |
1009 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1010 | bpt->owner->disposition = disp_del_at_next_stop; | |
1011 | } | |
1012 | ||
7789d0fa AC |
1013 | /* Restore the selected frame. */ |
1014 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1015 | |
1016 | return val; | |
1017 | } | |
1018 | ||
1019 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1020 | { | |
1021 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1022 | breakpoint. Once again, it would be better if this was represented | |
1023 | as two bp_locations. */ | |
1024 | ||
1025 | /* If we get here, we must have a callback mechanism for exception | |
1026 | events -- with g++ style embedded label support, we insert | |
1027 | ordinary breakpoints and not catchpoints. */ | |
1028 | val = target_insert_breakpoint (bpt->address, bpt->shadow_contents); | |
1029 | if (val) | |
1030 | { | |
1031 | /* Couldn't set breakpoint for some reason */ | |
1032 | fprintf_unfiltered (tmp_error_stream, | |
1033 | "Cannot insert catchpoint %d; disabling it.\n", | |
1034 | bpt->owner->number); | |
1035 | fprintf_filtered (tmp_error_stream, | |
1036 | "Error accessing memory address "); | |
1037 | print_address_numeric (bpt->address, 1, tmp_error_stream); | |
1038 | fprintf_filtered (tmp_error_stream, ": %s.\n", | |
1039 | safe_strerror (val)); | |
1040 | bpt->owner->enable_state = bp_disabled; | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | /* Bp set, now make sure callbacks are enabled */ | |
1045 | /* Format possible error msg */ | |
1046 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1047 | bpt->owner->number); | |
1048 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1049 | int val; | |
1050 | args_for_catchpoint_enable args; | |
1051 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1052 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1053 | args.enable_p = 1; | |
1054 | val = catch_errors (cover_target_enable_exception_callback, | |
1055 | &args, message, RETURN_MASK_ALL); | |
1056 | do_cleanups (cleanups); | |
1057 | if (val != 0 && val != -1) | |
1058 | bpt->inserted = 1; | |
1059 | ||
1060 | /* Check if something went wrong; val == 0 can be ignored */ | |
1061 | if (val == -1) | |
1062 | { | |
1063 | /* something went wrong */ | |
1064 | fprintf_unfiltered (tmp_error_stream, | |
1065 | "Cannot insert catchpoint %d; disabling it.\n", | |
1066 | bpt->owner->number); | |
1067 | bpt->owner->enable_state = bp_disabled; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | return val; | |
1072 | } | |
1073 | ||
1074 | else if (bpt->owner->type == bp_catch_fork | |
1075 | || bpt->owner->type == bp_catch_vfork | |
1076 | || bpt->owner->type == bp_catch_exec) | |
1077 | { | |
1078 | char *prefix = xstrprintf ("warning: inserting catchpoint %d: ", | |
1079 | bpt->owner->number); | |
1080 | struct cleanup *cleanups = make_cleanup (xfree, prefix); | |
1081 | val = catch_exceptions (uiout, insert_catchpoint, bpt->owner, prefix, | |
1082 | RETURN_MASK_ERROR); | |
1083 | do_cleanups (cleanups); | |
1084 | if (val < 0) | |
1085 | bpt->owner->enable_state = bp_disabled; | |
1086 | else | |
1087 | bpt->inserted = 1; | |
1640b821 DJ |
1088 | |
1089 | /* We've already printed an error message if there was a problem | |
1090 | inserting this catchpoint, and we've disabled the catchpoint, | |
1091 | so just return success. */ | |
1092 | return 0; | |
879bfdc2 DJ |
1093 | } |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
c906108c SS |
1098 | /* insert_breakpoints is used when starting or continuing the program. |
1099 | remove_breakpoints is used when the program stops. | |
1100 | Both return zero if successful, | |
1101 | or an `errno' value if could not write the inferior. */ | |
1102 | ||
1103 | int | |
fba45db2 | 1104 | insert_breakpoints (void) |
c906108c | 1105 | { |
879bfdc2 | 1106 | struct bp_location *b, *temp; |
53a5351d | 1107 | int return_val = 0; /* return success code. */ |
c906108c SS |
1108 | int val = 0; |
1109 | int disabled_breaks = 0; | |
81d0cc19 GS |
1110 | int hw_breakpoint_error = 0; |
1111 | int process_warning = 0; | |
c906108c | 1112 | |
81d0cc19 GS |
1113 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1114 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1115 | ||
1116 | /* Explicitly mark the warning -- this will only be printed if | |
1117 | there was an error. */ | |
1118 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1119 | |
879bfdc2 DJ |
1120 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1121 | { | |
1122 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1123 | breakpoints should not be inserted. */ | |
468d015d | 1124 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1125 | continue; |
1126 | ||
1127 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when | |
1128 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1129 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1130 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1131 | { | |
1132 | struct value *val; | |
1133 | val = evaluate_expression (b->owner->exp); | |
1134 | release_value (val); | |
1135 | if (VALUE_LAZY (val)) | |
1136 | value_fetch_lazy (val); | |
1137 | b->owner->val = val; | |
1138 | } | |
a881cf8e | 1139 | |
879bfdc2 DJ |
1140 | val = insert_bp_location (b, tmp_error_stream, |
1141 | &disabled_breaks, &process_warning, | |
1142 | &hw_breakpoint_error); | |
1143 | if (val) | |
1144 | return_val = val; | |
1145 | } | |
c906108c | 1146 | |
879bfdc2 | 1147 | if (return_val) |
81d0cc19 GS |
1148 | { |
1149 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1150 | message about possibly exhausted resources. */ | |
879bfdc2 | 1151 | if (hw_breakpoint_error) |
81d0cc19 | 1152 | { |
c6510018 MS |
1153 | fprintf_unfiltered (tmp_error_stream, |
1154 | "Could not insert hardware breakpoints:\n\ | |
1155 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1156 | } |
c6510018 | 1157 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1158 | if (process_warning) |
c6510018 MS |
1159 | fprintf_unfiltered (tmp_error_stream, |
1160 | "The same program may be running in another process."); | |
1161 | #endif | |
81d0cc19 GS |
1162 | target_terminal_ours_for_output (); |
1163 | error_stream (tmp_error_stream); | |
1164 | } | |
53a5351d | 1165 | return return_val; |
c906108c SS |
1166 | } |
1167 | ||
c906108c | 1168 | int |
fba45db2 | 1169 | remove_breakpoints (void) |
c906108c | 1170 | { |
0bde7532 | 1171 | struct bp_location *b; |
c906108c SS |
1172 | int val; |
1173 | ||
0bde7532 | 1174 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1175 | { |
0bde7532 | 1176 | if (b->inserted) |
c5aa993b JM |
1177 | { |
1178 | val = remove_breakpoint (b, mark_uninserted); | |
1179 | if (val != 0) | |
1180 | return val; | |
1181 | } | |
1182 | } | |
c906108c SS |
1183 | return 0; |
1184 | } | |
1185 | ||
692590c1 | 1186 | int |
80ce1ecb | 1187 | remove_hw_watchpoints (void) |
692590c1 | 1188 | { |
0bde7532 | 1189 | struct bp_location *b; |
692590c1 MS |
1190 | int val; |
1191 | ||
0bde7532 | 1192 | ALL_BP_LOCATIONS (b) |
692590c1 | 1193 | { |
0bde7532 | 1194 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1195 | { |
1196 | val = remove_breakpoint (b, mark_uninserted); | |
1197 | if (val != 0) | |
1198 | return val; | |
1199 | } | |
1200 | } | |
1201 | return 0; | |
1202 | } | |
1203 | ||
c906108c | 1204 | int |
fba45db2 | 1205 | reattach_breakpoints (int pid) |
c906108c | 1206 | { |
0bde7532 | 1207 | struct bp_location *b; |
c906108c | 1208 | int val; |
ce696e05 | 1209 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1210 | |
ce696e05 KB |
1211 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1212 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1213 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1214 | { |
0bde7532 | 1215 | if (b->inserted) |
c5aa993b JM |
1216 | { |
1217 | remove_breakpoint (b, mark_inserted); | |
0bde7532 DJ |
1218 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1219 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
c5aa993b | 1220 | else |
0bde7532 DJ |
1221 | val = target_insert_breakpoint (b->address, b->shadow_contents); |
1222 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of | |
1223 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1224 | if (val != 0) |
1225 | { | |
ce696e05 | 1226 | do_cleanups (old_chain); |
c5aa993b JM |
1227 | return val; |
1228 | } | |
1229 | } | |
1230 | } | |
ce696e05 | 1231 | do_cleanups (old_chain); |
c906108c SS |
1232 | return 0; |
1233 | } | |
1234 | ||
1235 | void | |
fba45db2 | 1236 | update_breakpoints_after_exec (void) |
c906108c | 1237 | { |
c5aa993b JM |
1238 | struct breakpoint *b; |
1239 | struct breakpoint *temp; | |
c906108c SS |
1240 | |
1241 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1242 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1243 | shadow is NOT valid after an exec()! */ | |
1244 | mark_breakpoints_out (); | |
1245 | ||
1246 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1247 | { |
1248 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1249 | if (b->type == bp_shlib_event) | |
1250 | { | |
1251 | delete_breakpoint (b); | |
1252 | continue; | |
1253 | } | |
c906108c | 1254 | |
1900040c MS |
1255 | /* Thread event breakpoints must be set anew after an exec(), |
1256 | as must overlay event breakpoints. */ | |
1257 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1258 | { |
1259 | delete_breakpoint (b); | |
1260 | continue; | |
1261 | } | |
1262 | ||
c5aa993b JM |
1263 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1264 | if (b->type == bp_step_resume) | |
1265 | { | |
1266 | delete_breakpoint (b); | |
1267 | continue; | |
1268 | } | |
1269 | ||
1270 | /* Ditto the sigtramp handler breakpoints. */ | |
1271 | if (b->type == bp_through_sigtramp) | |
1272 | { | |
1273 | delete_breakpoint (b); | |
1274 | continue; | |
1275 | } | |
1276 | ||
1277 | /* Ditto the exception-handling catchpoints. */ | |
1278 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1279 | { | |
1280 | delete_breakpoint (b); | |
1281 | continue; | |
1282 | } | |
1283 | ||
1284 | /* Don't delete an exec catchpoint, because else the inferior | |
1285 | won't stop when it ought! | |
1286 | ||
1287 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1288 | on this target, we may not be able to stop when the vfork is |
1289 | seen, but only when the subsequent exec is seen. (And because | |
1290 | deleting fork catchpoints here but not vfork catchpoints will | |
1291 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1292 | |
1293 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1294 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1295 | automagically. Certainly on HP-UX that's true. |
1296 | ||
1297 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1298 | valid code address on some platforms (like the mn10300 |
1299 | simulators). We shouldn't assign any special interpretation to | |
1300 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1301 | I can't see what that comment above is talking about. As far | |
1302 | as I can tell, setting the address of a | |
644a1fe1 JB |
1303 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1304 | is meaningless, since those are implemented with HP-UX kernel | |
1305 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1306 | if ((b->type == bp_catch_exec) || |
1307 | (b->type == bp_catch_vfork) || | |
1308 | (b->type == bp_catch_fork)) | |
1309 | { | |
5cab636d | 1310 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b JM |
1311 | continue; |
1312 | } | |
1313 | ||
1314 | /* bp_finish is a special case. The only way we ought to be able | |
1315 | to see one of these when an exec() has happened, is if the user | |
1316 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1317 | carries them to the call-site of the current callee, by setting | |
1318 | a temporary bp there and resuming. But in this case, the finish | |
1319 | will carry them entirely through the vfork & exec. | |
1320 | ||
1321 | We don't want to allow a bp_finish to remain inserted now. But | |
1322 | we can't safely delete it, 'cause finish_command has a handle to | |
1323 | the bp on a bpstat, and will later want to delete it. There's a | |
1324 | chance (and I've seen it happen) that if we delete the bp_finish | |
1325 | here, that its storage will get reused by the time finish_command | |
1326 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1327 | We really must allow finish_command to delete a bp_finish. | |
1328 | ||
53a5351d JM |
1329 | In the absense of a general solution for the "how do we know |
1330 | it's safe to delete something others may have handles to?" | |
1331 | problem, what we'll do here is just uninsert the bp_finish, and | |
1332 | let finish_command delete it. | |
1333 | ||
1334 | (We know the bp_finish is "doomed" in the sense that it's | |
1335 | momentary, and will be deleted as soon as finish_command sees | |
1336 | the inferior stopped. So it doesn't matter that the bp's | |
1337 | address is probably bogus in the new a.out, unlike e.g., the | |
1338 | solib breakpoints.) */ | |
c5aa993b | 1339 | |
c5aa993b JM |
1340 | if (b->type == bp_finish) |
1341 | { | |
1342 | continue; | |
1343 | } | |
1344 | ||
1345 | /* Without a symbolic address, we have little hope of the | |
1346 | pre-exec() address meaning the same thing in the post-exec() | |
1347 | a.out. */ | |
1348 | if (b->addr_string == NULL) | |
1349 | { | |
1350 | delete_breakpoint (b); | |
1351 | continue; | |
1352 | } | |
1353 | ||
1354 | /* If this breakpoint has survived the above battery of checks, then | |
1355 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1356 | to a target address, rather than reusing the old evaluation. |
1357 | ||
1358 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1359 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1360 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1361 | the breakpoint's address from scratch, or deletes it if it can't. | |
1362 | So I think this assignment could be deleted without effect. */ | |
5cab636d | 1363 | b->loc->address = (CORE_ADDR) NULL; |
c5aa993b | 1364 | } |
1900040c MS |
1365 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1366 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1367 | } |
1368 | ||
1369 | int | |
fba45db2 | 1370 | detach_breakpoints (int pid) |
c906108c | 1371 | { |
0bde7532 | 1372 | struct bp_location *b; |
c906108c | 1373 | int val; |
ce696e05 | 1374 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1375 | |
39f77062 KB |
1376 | if (pid == PIDGET (inferior_ptid)) |
1377 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1378 | |
ce696e05 KB |
1379 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1380 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1381 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1382 | { |
0bde7532 | 1383 | if (b->inserted) |
c5aa993b JM |
1384 | { |
1385 | val = remove_breakpoint (b, mark_inserted); | |
1386 | if (val != 0) | |
1387 | { | |
ce696e05 | 1388 | do_cleanups (old_chain); |
c5aa993b JM |
1389 | return val; |
1390 | } | |
1391 | } | |
1392 | } | |
ce696e05 | 1393 | do_cleanups (old_chain); |
c906108c SS |
1394 | return 0; |
1395 | } | |
1396 | ||
1397 | static int | |
0bde7532 | 1398 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1399 | { |
1400 | int val; | |
c5aa993b | 1401 | |
0bde7532 | 1402 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1403 | /* Permanent breakpoints cannot be inserted or removed. */ |
1404 | return 0; | |
1405 | ||
0bde7532 | 1406 | if (b->owner->type == bp_none) |
53a5351d | 1407 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
0bde7532 DJ |
1408 | b->owner->number); |
1409 | ||
1410 | if (b->loc_type == bp_loc_software_breakpoint | |
1411 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1412 | { |
c02f5703 MS |
1413 | /* "Normal" instruction breakpoint: either the standard |
1414 | trap-instruction bp (bp_breakpoint), or a | |
1415 | bp_hardware_breakpoint. */ | |
1416 | ||
1417 | /* First check to see if we have to handle an overlay. */ | |
1418 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1419 | || b->section == NULL |
1420 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1421 | { |
1422 | /* No overlay handling: just remove the breakpoint. */ | |
1423 | ||
0bde7532 DJ |
1424 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1425 | val = target_remove_hw_breakpoint (b->address, | |
1426 | b->shadow_contents); | |
c02f5703 | 1427 | else |
0bde7532 | 1428 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c02f5703 | 1429 | } |
c906108c SS |
1430 | else |
1431 | { | |
c02f5703 MS |
1432 | /* This breakpoint is in an overlay section. |
1433 | Did we set a breakpoint at the LMA? */ | |
1434 | if (!overlay_events_enabled) | |
1435 | { | |
1436 | /* Yes -- overlay event support is not active, so we | |
1437 | should have set a breakpoint at the LMA. Remove it. | |
1438 | */ | |
0bde7532 DJ |
1439 | CORE_ADDR addr = overlay_unmapped_address (b->address, |
1440 | b->section); | |
c02f5703 MS |
1441 | /* Ignore any failures: if the LMA is in ROM, we will |
1442 | have already warned when we failed to insert it. */ | |
0bde7532 DJ |
1443 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1444 | target_remove_hw_breakpoint (addr, b->shadow_contents); | |
c02f5703 | 1445 | else |
0bde7532 | 1446 | target_remove_breakpoint (addr, b->shadow_contents); |
c02f5703 MS |
1447 | } |
1448 | /* Did we set a breakpoint at the VMA? | |
1449 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1450 | if (b->inserted) |
c906108c | 1451 | { |
c02f5703 MS |
1452 | /* Yes -- remove it. Previously we did not bother to |
1453 | remove the breakpoint if the section had been | |
1454 | unmapped, but let's not rely on that being safe. We | |
1455 | don't know what the overlay manager might do. */ | |
0bde7532 DJ |
1456 | if (b->loc_type == bp_loc_hardware_breakpoint) |
1457 | val = target_remove_hw_breakpoint (b->address, | |
1458 | b->shadow_contents); | |
c02f5703 | 1459 | else |
0bde7532 DJ |
1460 | val = target_remove_breakpoint (b->address, |
1461 | b->shadow_contents); | |
c906108c | 1462 | } |
c02f5703 MS |
1463 | else |
1464 | { | |
1465 | /* No -- not inserted, so no need to remove. No error. */ | |
1466 | val = 0; | |
1467 | } | |
c906108c SS |
1468 | } |
1469 | if (val) | |
1470 | return val; | |
0bde7532 | 1471 | b->inserted = (is == mark_inserted); |
c906108c | 1472 | } |
0bde7532 | 1473 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1474 | && breakpoint_enabled (b->owner) |
0bde7532 | 1475 | && !b->duplicate) |
c906108c | 1476 | { |
278cd55f AC |
1477 | struct value *v; |
1478 | struct value *n; | |
c5aa993b | 1479 | |
0bde7532 | 1480 | b->inserted = (is == mark_inserted); |
c906108c | 1481 | /* Walk down the saved value chain. */ |
0bde7532 | 1482 | for (v = b->owner->val_chain; v; v = v->next) |
c906108c SS |
1483 | { |
1484 | /* For each memory reference remove the watchpoint | |
1485 | at that address. */ | |
5c44784c JM |
1486 | if (VALUE_LVAL (v) == lval_memory |
1487 | && ! VALUE_LAZY (v)) | |
c906108c | 1488 | { |
df407dfe | 1489 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1490 | |
0bde7532 | 1491 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1492 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1493 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1494 | { | |
1495 | CORE_ADDR addr; | |
1496 | int len, type; | |
1497 | ||
df407dfe AC |
1498 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1499 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1500 | type = hw_write; |
0bde7532 | 1501 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1502 | type = hw_read; |
0bde7532 | 1503 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1504 | type = hw_access; |
1505 | ||
1506 | val = target_remove_watchpoint (addr, len, type); | |
1507 | if (val == -1) | |
0bde7532 | 1508 | b->inserted = 1; |
2e70b7b9 MS |
1509 | val = 0; |
1510 | } | |
c906108c SS |
1511 | } |
1512 | } | |
1513 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1514 | if ((is == mark_uninserted) && (b->inserted)) |
53a5351d | 1515 | warning ("Could not remove hardware watchpoint %d.", |
0bde7532 | 1516 | b->owner->number); |
c906108c | 1517 | } |
0bde7532 DJ |
1518 | else if ((b->owner->type == bp_catch_fork || |
1519 | b->owner->type == bp_catch_vfork || | |
1520 | b->owner->type == bp_catch_exec) | |
468d015d | 1521 | && breakpoint_enabled (b->owner) |
0bde7532 | 1522 | && !b->duplicate) |
c906108c SS |
1523 | { |
1524 | val = -1; | |
0bde7532 | 1525 | switch (b->owner->type) |
c5aa993b JM |
1526 | { |
1527 | case bp_catch_fork: | |
39f77062 | 1528 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1529 | break; |
1530 | case bp_catch_vfork: | |
39f77062 | 1531 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1532 | break; |
1533 | case bp_catch_exec: | |
39f77062 | 1534 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1535 | break; |
ac9a91a7 | 1536 | default: |
53a5351d | 1537 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1538 | break; |
c5aa993b | 1539 | } |
c906108c SS |
1540 | if (val) |
1541 | return val; | |
0bde7532 | 1542 | b->inserted = (is == mark_inserted); |
c906108c | 1543 | } |
0bde7532 DJ |
1544 | else if ((b->owner->type == bp_catch_catch || |
1545 | b->owner->type == bp_catch_throw) | |
468d015d | 1546 | && breakpoint_enabled (b->owner) |
0bde7532 | 1547 | && !b->duplicate) |
c906108c SS |
1548 | { |
1549 | ||
0bde7532 | 1550 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1551 | if (val) |
c5aa993b | 1552 | return val; |
0bde7532 | 1553 | b->inserted = (is == mark_inserted); |
c906108c | 1554 | } |
0bde7532 DJ |
1555 | else if (ep_is_exception_catchpoint (b->owner) |
1556 | && b->inserted /* sometimes previous insert doesn't happen */ | |
468d015d | 1557 | && breakpoint_enabled (b->owner) |
0bde7532 | 1558 | && !b->duplicate) |
c906108c SS |
1559 | { |
1560 | ||
0bde7532 | 1561 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1562 | if (val) |
c5aa993b JM |
1563 | return val; |
1564 | ||
0bde7532 | 1565 | b->inserted = (is == mark_inserted); |
c906108c SS |
1566 | } |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | /* Clear the "inserted" flag in all breakpoints. */ | |
1572 | ||
1573 | void | |
fba45db2 | 1574 | mark_breakpoints_out (void) |
c906108c | 1575 | { |
075f6582 | 1576 | struct bp_location *bpt; |
c906108c | 1577 | |
075f6582 DJ |
1578 | ALL_BP_LOCATIONS (bpt) |
1579 | bpt->inserted = 0; | |
c906108c SS |
1580 | } |
1581 | ||
53a5351d JM |
1582 | /* Clear the "inserted" flag in all breakpoints and delete any |
1583 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1584 | |
1585 | Plus other such housekeeping that has to be done for breakpoints | |
1586 | between runs. | |
1587 | ||
53a5351d JM |
1588 | Note: this function gets called at the end of a run (by |
1589 | generic_mourn_inferior) and when a run begins (by | |
1590 | init_wait_for_inferior). */ | |
c906108c SS |
1591 | |
1592 | ||
1593 | ||
1594 | void | |
fba45db2 | 1595 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1596 | { |
52f0bd74 | 1597 | struct breakpoint *b, *temp; |
075f6582 | 1598 | struct bp_location *bpt; |
c906108c SS |
1599 | static int warning_needed = 0; |
1600 | ||
075f6582 DJ |
1601 | ALL_BP_LOCATIONS (bpt) |
1602 | bpt->inserted = 0; | |
1603 | ||
c906108c | 1604 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1605 | { |
c5aa993b JM |
1606 | switch (b->type) |
1607 | { | |
1608 | case bp_call_dummy: | |
1609 | case bp_watchpoint_scope: | |
c906108c | 1610 | |
c5aa993b JM |
1611 | /* If the call dummy breakpoint is at the entry point it will |
1612 | cause problems when the inferior is rerun, so we better | |
1613 | get rid of it. | |
c906108c | 1614 | |
c5aa993b JM |
1615 | Also get rid of scope breakpoints. */ |
1616 | delete_breakpoint (b); | |
1617 | break; | |
c906108c | 1618 | |
c5aa993b JM |
1619 | case bp_watchpoint: |
1620 | case bp_hardware_watchpoint: | |
1621 | case bp_read_watchpoint: | |
1622 | case bp_access_watchpoint: | |
c906108c | 1623 | |
c5aa993b JM |
1624 | /* Likewise for watchpoints on local expressions. */ |
1625 | if (b->exp_valid_block != NULL) | |
1626 | delete_breakpoint (b); | |
c860120c PM |
1627 | if (context == inf_starting) |
1628 | { | |
1629 | /* Reset val field to force reread of starting value | |
1630 | in insert_breakpoints. */ | |
1631 | if (b->val) | |
1632 | value_free (b->val); | |
1633 | b->val = NULL; | |
1634 | } | |
c5aa993b JM |
1635 | break; |
1636 | default: | |
1637 | /* Likewise for exception catchpoints in dynamic-linked | |
1638 | executables where required */ | |
f83f82bc AC |
1639 | if (ep_is_exception_catchpoint (b) |
1640 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1641 | { |
1642 | warning_needed = 1; | |
c906108c | 1643 | delete_breakpoint (b); |
c5aa993b JM |
1644 | } |
1645 | break; | |
1646 | } | |
1647 | } | |
c906108c | 1648 | |
f83f82bc AC |
1649 | if (deprecated_exception_catchpoints_are_fragile) |
1650 | deprecated_exception_support_initialized = 0; | |
c906108c | 1651 | |
c5aa993b | 1652 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1653 | if (warning_needed && (context != inf_exited)) |
1654 | { | |
53a5351d JM |
1655 | warning ("Exception catchpoints from last run were deleted."); |
1656 | warning ("You must reinsert them explicitly."); | |
c906108c | 1657 | warning_needed = 0; |
c5aa993b | 1658 | } |
c906108c SS |
1659 | } |
1660 | ||
c2c6d25f JM |
1661 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1662 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1663 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1664 | permanent breakpoint. | |
1665 | - When continuing from a location with an ordinary breakpoint, we | |
1666 | actually single step once before calling insert_breakpoints. | |
1667 | - When continuing from a localion with a permanent breakpoint, we | |
1668 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1669 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1670 | |
c2c6d25f | 1671 | enum breakpoint_here |
fba45db2 | 1672 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1673 | { |
075f6582 | 1674 | struct bp_location *bpt; |
c2c6d25f | 1675 | int any_breakpoint_here = 0; |
c906108c | 1676 | |
075f6582 DJ |
1677 | ALL_BP_LOCATIONS (bpt) |
1678 | { | |
1679 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1680 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1681 | continue; | |
1682 | ||
468d015d | 1683 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1684 | || bpt->owner->enable_state == bp_permanent) |
1685 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1686 | { | |
1687 | if (overlay_debugging | |
1688 | && section_is_overlay (bpt->section) | |
1689 | && !section_is_mapped (bpt->section)) | |
1690 | continue; /* unmapped overlay -- can't be a match */ | |
1691 | else if (bpt->owner->enable_state == bp_permanent) | |
1692 | return permanent_breakpoint_here; | |
1693 | else | |
1694 | any_breakpoint_here = 1; | |
1695 | } | |
1696 | } | |
c906108c | 1697 | |
c2c6d25f | 1698 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1699 | } |
1700 | ||
c2c6d25f | 1701 | |
53a5351d JM |
1702 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1703 | but it only returns true if there is actually a breakpoint inserted | |
1704 | at PC. */ | |
c906108c SS |
1705 | |
1706 | int | |
fba45db2 | 1707 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1708 | { |
075f6582 | 1709 | struct bp_location *bpt; |
c906108c | 1710 | |
075f6582 | 1711 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1712 | { |
075f6582 DJ |
1713 | if (bpt->loc_type != bp_loc_software_breakpoint |
1714 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1715 | continue; | |
1716 | ||
1717 | if (bpt->inserted | |
1718 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1719 | { | |
1720 | if (overlay_debugging | |
1721 | && section_is_overlay (bpt->section) | |
1722 | && !section_is_mapped (bpt->section)) | |
1723 | continue; /* unmapped overlay -- can't be a match */ | |
1724 | else | |
1725 | return 1; | |
1726 | } | |
c5aa993b | 1727 | } |
c906108c SS |
1728 | |
1729 | return 0; | |
1730 | } | |
1731 | ||
4fa8626c DJ |
1732 | /* This function returns non-zero iff there is a software breakpoint |
1733 | inserted at PC. */ | |
1734 | ||
1735 | int | |
1736 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1737 | { | |
1738 | struct bp_location *bpt; | |
1739 | int any_breakpoint_here = 0; | |
1740 | ||
1741 | ALL_BP_LOCATIONS (bpt) | |
1742 | { | |
1743 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1744 | continue; | |
1745 | ||
1746 | if ((breakpoint_enabled (bpt->owner) | |
1747 | || bpt->owner->enable_state == bp_permanent) | |
1748 | && bpt->inserted | |
1749 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1750 | { | |
1751 | if (overlay_debugging | |
1752 | && section_is_overlay (bpt->section) | |
1753 | && !section_is_mapped (bpt->section)) | |
1754 | continue; /* unmapped overlay -- can't be a match */ | |
1755 | else | |
1756 | return 1; | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | return 0; | |
1761 | } | |
1762 | ||
075f6582 DJ |
1763 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1764 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1765 | |
1766 | int | |
39f77062 | 1767 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1768 | { |
075f6582 | 1769 | struct bp_location *bpt; |
c906108c SS |
1770 | int thread; |
1771 | ||
39f77062 | 1772 | thread = pid_to_thread_id (ptid); |
c906108c | 1773 | |
075f6582 | 1774 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1775 | { |
075f6582 DJ |
1776 | if (bpt->loc_type != bp_loc_software_breakpoint |
1777 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1778 | continue; | |
1779 | ||
468d015d | 1780 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1781 | || bpt->owner->enable_state == bp_permanent) |
1782 | && bpt->address == pc | |
1783 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1784 | { | |
1785 | if (overlay_debugging | |
1786 | && section_is_overlay (bpt->section) | |
1787 | && !section_is_mapped (bpt->section)) | |
1788 | continue; /* unmapped overlay -- can't be a match */ | |
1789 | else | |
1790 | return 1; | |
1791 | } | |
c5aa993b | 1792 | } |
c906108c SS |
1793 | |
1794 | return 0; | |
1795 | } | |
c906108c | 1796 | \f |
c5aa993b | 1797 | |
c906108c SS |
1798 | /* bpstat stuff. External routines' interfaces are documented |
1799 | in breakpoint.h. */ | |
1800 | ||
1801 | int | |
fba45db2 | 1802 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1803 | { |
1804 | return | |
1805 | (ep->type == bp_catch_load) | |
1806 | || (ep->type == bp_catch_unload) | |
1807 | || (ep->type == bp_catch_fork) | |
1808 | || (ep->type == bp_catch_vfork) | |
1809 | || (ep->type == bp_catch_exec) | |
1810 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1811 | || (ep->type == bp_catch_throw); |
c906108c | 1812 | |
c5aa993b | 1813 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1814 | } |
c5aa993b | 1815 | |
c906108c | 1816 | int |
fba45db2 | 1817 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1818 | { |
1819 | return | |
1820 | (ep->type == bp_catch_load) | |
d85310f7 | 1821 | || (ep->type == bp_catch_unload); |
c906108c SS |
1822 | } |
1823 | ||
1824 | int | |
fba45db2 | 1825 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1826 | { |
1827 | return | |
1828 | (ep->type == bp_catch_catch) | |
d85310f7 | 1829 | || (ep->type == bp_catch_throw); |
c906108c SS |
1830 | } |
1831 | ||
1832 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1833 | Also free any storage that is part of a bpstat. */ | |
1834 | ||
1835 | void | |
fba45db2 | 1836 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1837 | { |
1838 | bpstat p; | |
1839 | bpstat q; | |
1840 | ||
1841 | if (bsp == 0) | |
1842 | return; | |
1843 | p = *bsp; | |
1844 | while (p != NULL) | |
1845 | { | |
1846 | q = p->next; | |
1847 | if (p->old_val != NULL) | |
1848 | value_free (p->old_val); | |
c2b8ed2c | 1849 | free_command_lines (&p->commands); |
b8c9b27d | 1850 | xfree (p); |
c906108c SS |
1851 | p = q; |
1852 | } | |
1853 | *bsp = NULL; | |
1854 | } | |
1855 | ||
1856 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1857 | is part of the bpstat is copied as well. */ | |
1858 | ||
1859 | bpstat | |
fba45db2 | 1860 | bpstat_copy (bpstat bs) |
c906108c SS |
1861 | { |
1862 | bpstat p = NULL; | |
1863 | bpstat tmp; | |
1864 | bpstat retval = NULL; | |
1865 | ||
1866 | if (bs == NULL) | |
1867 | return bs; | |
1868 | ||
1869 | for (; bs != NULL; bs = bs->next) | |
1870 | { | |
1871 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1872 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1873 | if (bs->commands != NULL) |
1874 | tmp->commands = copy_command_lines (bs->commands); | |
1875 | if (bs->old_val != NULL) | |
1876 | tmp->old_val = value_copy (bs->old_val); | |
1877 | ||
c906108c SS |
1878 | if (p == NULL) |
1879 | /* This is the first thing in the chain. */ | |
1880 | retval = tmp; | |
1881 | else | |
1882 | p->next = tmp; | |
1883 | p = tmp; | |
1884 | } | |
1885 | p->next = NULL; | |
1886 | return retval; | |
1887 | } | |
1888 | ||
1889 | /* Find the bpstat associated with this breakpoint */ | |
1890 | ||
1891 | bpstat | |
fba45db2 | 1892 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1893 | { |
c5aa993b JM |
1894 | if (bsp == NULL) |
1895 | return NULL; | |
c906108c | 1896 | |
c5aa993b JM |
1897 | for (; bsp != NULL; bsp = bsp->next) |
1898 | { | |
1899 | if (bsp->breakpoint_at == breakpoint) | |
1900 | return bsp; | |
1901 | } | |
c906108c SS |
1902 | return NULL; |
1903 | } | |
1904 | ||
1905 | /* Find a step_resume breakpoint associated with this bpstat. | |
1906 | (If there are multiple step_resume bp's on the list, this function | |
1907 | will arbitrarily pick one.) | |
1908 | ||
1909 | It is an error to use this function if BPSTAT doesn't contain a | |
1910 | step_resume breakpoint. | |
1911 | ||
1912 | See wait_for_inferior's use of this function. */ | |
1913 | struct breakpoint * | |
fba45db2 | 1914 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1915 | { |
8601f500 MS |
1916 | int current_thread; |
1917 | ||
c906108c SS |
1918 | if (bsp == NULL) |
1919 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1920 | ||
8601f500 MS |
1921 | current_thread = pid_to_thread_id (inferior_ptid); |
1922 | ||
c906108c SS |
1923 | for (; bsp != NULL; bsp = bsp->next) |
1924 | { | |
1925 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1926 | (bsp->breakpoint_at->type == bp_step_resume) && |
1927 | (bsp->breakpoint_at->thread == current_thread || | |
1928 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 1929 | return bsp->breakpoint_at; |
c906108c SS |
1930 | } |
1931 | ||
1932 | error ("Internal error (no step_resume breakpoint found)"); | |
1933 | } | |
1934 | ||
1935 | ||
1936 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1937 | at. *BSP upon return is a bpstat which points to the remaining | |
1938 | breakpoints stopped at (but which is not guaranteed to be good for | |
1939 | anything but further calls to bpstat_num). | |
1940 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1941 | ||
1942 | int | |
fba45db2 | 1943 | bpstat_num (bpstat *bsp) |
c906108c SS |
1944 | { |
1945 | struct breakpoint *b; | |
1946 | ||
1947 | if ((*bsp) == NULL) | |
1948 | return 0; /* No more breakpoint values */ | |
1949 | else | |
1950 | { | |
1951 | b = (*bsp)->breakpoint_at; | |
1952 | *bsp = (*bsp)->next; | |
1953 | if (b == NULL) | |
1954 | return -1; /* breakpoint that's been deleted since */ | |
1955 | else | |
c5aa993b | 1956 | return b->number; /* We have its number */ |
c906108c SS |
1957 | } |
1958 | } | |
1959 | ||
1960 | /* Modify BS so that the actions will not be performed. */ | |
1961 | ||
1962 | void | |
fba45db2 | 1963 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1964 | { |
1965 | for (; bs != NULL; bs = bs->next) | |
1966 | { | |
c2b8ed2c | 1967 | free_command_lines (&bs->commands); |
c906108c SS |
1968 | if (bs->old_val != NULL) |
1969 | { | |
1970 | value_free (bs->old_val); | |
1971 | bs->old_val = NULL; | |
1972 | } | |
1973 | } | |
1974 | } | |
1975 | ||
1976 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 1977 | static void |
4efb68b1 | 1978 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
1979 | { |
1980 | executing_breakpoint_commands = 0; | |
1981 | } | |
1982 | ||
1983 | /* Execute all the commands associated with all the breakpoints at this | |
1984 | location. Any of these commands could cause the process to proceed | |
1985 | beyond this point, etc. We look out for such changes by checking | |
1986 | the global "breakpoint_proceeded" after each command. */ | |
1987 | ||
1988 | void | |
fba45db2 | 1989 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1990 | { |
1991 | bpstat bs; | |
1992 | struct cleanup *old_chain; | |
c906108c SS |
1993 | |
1994 | /* Avoid endless recursion if a `source' command is contained | |
1995 | in bs->commands. */ | |
1996 | if (executing_breakpoint_commands) | |
1997 | return; | |
1998 | ||
1999 | executing_breakpoint_commands = 1; | |
2000 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2001 | ||
2002 | top: | |
2003 | /* Note that (as of this writing), our callers all appear to | |
2004 | be passing us the address of global stop_bpstat. And, if | |
2005 | our calls to execute_control_command cause the inferior to | |
2006 | proceed, that global (and hence, *bsp) will change. | |
2007 | ||
2008 | We must be careful to not touch *bsp unless the inferior | |
2009 | has not proceeded. */ | |
2010 | ||
2011 | /* This pointer will iterate over the list of bpstat's. */ | |
2012 | bs = *bsp; | |
2013 | ||
2014 | breakpoint_proceeded = 0; | |
2015 | for (; bs != NULL; bs = bs->next) | |
2016 | { | |
6c50ab1c JB |
2017 | struct command_line *cmd; |
2018 | struct cleanup *this_cmd_tree_chain; | |
2019 | ||
2020 | /* Take ownership of the BSP's command tree, if it has one. | |
2021 | ||
2022 | The command tree could legitimately contain commands like | |
2023 | 'step' and 'next', which call clear_proceed_status, which | |
2024 | frees stop_bpstat's command tree. To make sure this doesn't | |
2025 | free the tree we're executing out from under us, we need to | |
2026 | take ownership of the tree ourselves. Since a given bpstat's | |
2027 | commands are only executed once, we don't need to copy it; we | |
2028 | can clear the pointer in the bpstat, and make sure we free | |
2029 | the tree when we're done. */ | |
c906108c | 2030 | cmd = bs->commands; |
6c50ab1c JB |
2031 | bs->commands = 0; |
2032 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2033 | ||
c906108c SS |
2034 | while (cmd != NULL) |
2035 | { | |
2036 | execute_control_command (cmd); | |
2037 | ||
2038 | if (breakpoint_proceeded) | |
2039 | break; | |
2040 | else | |
2041 | cmd = cmd->next; | |
2042 | } | |
6c50ab1c JB |
2043 | |
2044 | /* We can free this command tree now. */ | |
2045 | do_cleanups (this_cmd_tree_chain); | |
2046 | ||
c906108c SS |
2047 | if (breakpoint_proceeded) |
2048 | /* The inferior is proceeded by the command; bomb out now. | |
2049 | The bpstat chain has been blown away by wait_for_inferior. | |
2050 | But since execution has stopped again, there is a new bpstat | |
2051 | to look at, so start over. */ | |
2052 | goto top; | |
c906108c | 2053 | } |
c2b8ed2c | 2054 | do_cleanups (old_chain); |
c906108c SS |
2055 | } |
2056 | ||
e514a9d6 | 2057 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2058 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2059 | by having it set different print_it values. |
2060 | ||
2061 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2062 | through the bpstat list of things causing this stop, calling the | |
2063 | print_bp_stop_message function on each one. The behavior of the | |
2064 | print_bp_stop_message function depends on the print_it field of | |
2065 | bpstat. If such field so indicates, call this function here. | |
2066 | ||
2067 | Return values from this routine (ultimately used by bpstat_print() | |
2068 | and normal_stop() to decide what to do): | |
2069 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2070 | don't print anything else. | |
2071 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2072 | that something to be followed by a location. | |
2073 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2074 | that something to be followed by a location. | |
2075 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2076 | analysis. */ | |
c906108c | 2077 | |
917317f4 | 2078 | static enum print_stop_action |
fba45db2 | 2079 | print_it_typical (bpstat bs) |
c906108c | 2080 | { |
3b31d625 | 2081 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2082 | struct ui_stream *stb; |
2083 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2084 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2085 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2086 | which has since been deleted. */ | |
e514a9d6 | 2087 | if (bs->breakpoint_at == NULL) |
917317f4 | 2088 | return PRINT_UNKNOWN; |
c906108c | 2089 | |
e514a9d6 | 2090 | switch (bs->breakpoint_at->type) |
c906108c | 2091 | { |
e514a9d6 JM |
2092 | case bp_breakpoint: |
2093 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2094 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2095 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2096 | bs->breakpoint_at->loc->address, | |
76897487 | 2097 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2098 | annotate_breakpoint (bs->breakpoint_at->number); |
2099 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2100 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2101 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); |
8b93c638 JM |
2102 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2103 | ui_out_text (uiout, ", "); | |
2104 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2105 | break; |
2106 | ||
2107 | case bp_shlib_event: | |
917317f4 JM |
2108 | /* Did we stop because the user set the stop_on_solib_events |
2109 | variable? (If so, we report this as a generic, "Stopped due | |
2110 | to shlib event" message.) */ | |
e514a9d6 JM |
2111 | printf_filtered ("Stopped due to shared library event\n"); |
2112 | return PRINT_NOTHING; | |
2113 | break; | |
2114 | ||
c4093a6a JM |
2115 | case bp_thread_event: |
2116 | /* Not sure how we will get here. | |
2117 | GDB should not stop for these breakpoints. */ | |
2118 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
2119 | return PRINT_NOTHING; | |
2120 | break; | |
2121 | ||
1900040c MS |
2122 | case bp_overlay_event: |
2123 | /* By analogy with the thread event, GDB should not stop for these. */ | |
2124 | printf_filtered ("Overlay Event Breakpoint: gdb should not stop!\n"); | |
2125 | return PRINT_NOTHING; | |
2126 | break; | |
2127 | ||
e514a9d6 | 2128 | case bp_catch_load: |
c906108c SS |
2129 | annotate_catchpoint (bs->breakpoint_at->number); |
2130 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
2131 | printf_filtered ("loaded"); |
2132 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2133 | return PRINT_SRC_AND_LOC; | |
2134 | break; | |
2135 | ||
2136 | case bp_catch_unload: | |
2137 | annotate_catchpoint (bs->breakpoint_at->number); | |
2138 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2139 | printf_filtered ("unloaded"); | |
2140 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
2141 | return PRINT_SRC_AND_LOC; | |
2142 | break; | |
2143 | ||
2144 | case bp_catch_fork: | |
2145 | annotate_catchpoint (bs->breakpoint_at->number); | |
2146 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2147 | printf_filtered ("forked"); | |
53a5351d JM |
2148 | printf_filtered (" process %d), ", |
2149 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 2150 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2151 | break; |
2152 | ||
2153 | case bp_catch_vfork: | |
2154 | annotate_catchpoint (bs->breakpoint_at->number); | |
2155 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
2156 | printf_filtered ("vforked"); | |
2157 | printf_filtered (" process %d), ", | |
2158 | bs->breakpoint_at->forked_inferior_pid); | |
2159 | return PRINT_SRC_AND_LOC; | |
2160 | break; | |
2161 | ||
2162 | case bp_catch_exec: | |
c906108c SS |
2163 | annotate_catchpoint (bs->breakpoint_at->number); |
2164 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
2165 | bs->breakpoint_at->number, |
2166 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2167 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2168 | break; |
2169 | ||
2170 | case bp_catch_catch: | |
53a5351d JM |
2171 | if (current_exception_event && |
2172 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2173 | { |
2174 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2175 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
2176 | bs->breakpoint_at->number); | |
c5aa993b JM |
2177 | printf_filtered ("throw location "); |
2178 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2179 | printf_filtered ("%s:%d", | |
2180 | CURRENT_EXCEPTION_THROW_FILE, | |
2181 | CURRENT_EXCEPTION_THROW_LINE); | |
2182 | else | |
2183 | printf_filtered ("unknown"); | |
2184 | ||
2185 | printf_filtered (", catch location "); | |
2186 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2187 | printf_filtered ("%s:%d", | |
2188 | CURRENT_EXCEPTION_CATCH_FILE, | |
2189 | CURRENT_EXCEPTION_CATCH_LINE); | |
2190 | else | |
2191 | printf_filtered ("unknown"); | |
2192 | ||
2193 | printf_filtered ("\n"); | |
e514a9d6 JM |
2194 | /* don't bother to print location frame info */ |
2195 | return PRINT_SRC_ONLY; | |
c5aa993b | 2196 | } |
c906108c | 2197 | else |
c5aa993b | 2198 | { |
e514a9d6 JM |
2199 | /* really throw, some other bpstat will handle it */ |
2200 | return PRINT_UNKNOWN; | |
c5aa993b | 2201 | } |
e514a9d6 JM |
2202 | break; |
2203 | ||
2204 | case bp_catch_throw: | |
53a5351d JM |
2205 | if (current_exception_event && |
2206 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2207 | { |
2208 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
2209 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
2210 | bs->breakpoint_at->number); | |
c5aa993b JM |
2211 | printf_filtered ("throw location "); |
2212 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
2213 | printf_filtered ("%s:%d", | |
2214 | CURRENT_EXCEPTION_THROW_FILE, | |
2215 | CURRENT_EXCEPTION_THROW_LINE); | |
2216 | else | |
2217 | printf_filtered ("unknown"); | |
2218 | ||
2219 | printf_filtered (", catch location "); | |
2220 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2221 | printf_filtered ("%s:%d", | |
2222 | CURRENT_EXCEPTION_CATCH_FILE, | |
2223 | CURRENT_EXCEPTION_CATCH_LINE); | |
2224 | else | |
2225 | printf_filtered ("unknown"); | |
2226 | ||
2227 | printf_filtered ("\n"); | |
e514a9d6 JM |
2228 | /* don't bother to print location frame info */ |
2229 | return PRINT_SRC_ONLY; | |
c5aa993b | 2230 | } |
c906108c | 2231 | else |
c5aa993b | 2232 | { |
e514a9d6 JM |
2233 | /* really catch, some other bpstat will handle it */ |
2234 | return PRINT_UNKNOWN; | |
c5aa993b | 2235 | } |
e514a9d6 | 2236 | break; |
c906108c | 2237 | |
e514a9d6 JM |
2238 | case bp_watchpoint: |
2239 | case bp_hardware_watchpoint: | |
2240 | if (bs->old_val != NULL) | |
2241 | { | |
2242 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2243 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2244 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); |
8b93c638 | 2245 | mention (bs->breakpoint_at); |
3b31d625 | 2246 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2247 | ui_out_text (uiout, "\nOld value = "); |
2248 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2249 | ui_out_field_stream (uiout, "old", stb); | |
2250 | ui_out_text (uiout, "\nNew value = "); | |
2251 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2252 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2253 | do_cleanups (ui_out_chain); |
8b93c638 | 2254 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2255 | value_free (bs->old_val); |
2256 | bs->old_val = NULL; | |
2257 | } | |
2258 | /* More than one watchpoint may have been triggered. */ | |
2259 | return PRINT_UNKNOWN; | |
2260 | break; | |
2261 | ||
2262 | case bp_read_watchpoint: | |
9dc5e2a9 | 2263 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2264 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); |
8b93c638 | 2265 | mention (bs->breakpoint_at); |
3b31d625 | 2266 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2267 | ui_out_text (uiout, "\nValue = "); |
2268 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2269 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2270 | do_cleanups (ui_out_chain); |
8b93c638 | 2271 | ui_out_text (uiout, "\n"); |
917317f4 | 2272 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2273 | break; |
2274 | ||
2275 | case bp_access_watchpoint: | |
8b93c638 JM |
2276 | if (bs->old_val != NULL) |
2277 | { | |
2278 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2279 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2280 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
8b93c638 | 2281 | mention (bs->breakpoint_at); |
3b31d625 | 2282 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2283 | ui_out_text (uiout, "\nOld value = "); |
2284 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2285 | ui_out_field_stream (uiout, "old", stb); | |
2286 | value_free (bs->old_val); | |
2287 | bs->old_val = NULL; | |
2288 | ui_out_text (uiout, "\nNew value = "); | |
2289 | } | |
2290 | else | |
2291 | { | |
2292 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2293 | if (ui_out_is_mi_like_p (uiout)) |
c97fe386 | 2294 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
3b31d625 | 2295 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2296 | ui_out_text (uiout, "\nValue = "); |
2297 | } | |
2298 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2299 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2300 | do_cleanups (ui_out_chain); |
8b93c638 | 2301 | ui_out_text (uiout, "\n"); |
917317f4 | 2302 | return PRINT_UNKNOWN; |
e514a9d6 | 2303 | break; |
4ce44c66 | 2304 | |
e514a9d6 JM |
2305 | /* Fall through, we don't deal with these types of breakpoints |
2306 | here. */ | |
2307 | ||
11cf8741 | 2308 | case bp_finish: |
9dc5e2a9 | 2309 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2310 | ui_out_field_string (uiout, "reason", "function-finished"); |
8b93c638 JM |
2311 | return PRINT_UNKNOWN; |
2312 | break; | |
2313 | ||
e514a9d6 | 2314 | case bp_until: |
9dc5e2a9 | 2315 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2316 | ui_out_field_string (uiout, "reason", "location-reached"); |
8b93c638 JM |
2317 | return PRINT_UNKNOWN; |
2318 | break; | |
2319 | ||
c2d11a7d | 2320 | case bp_none: |
e514a9d6 JM |
2321 | case bp_longjmp: |
2322 | case bp_longjmp_resume: | |
2323 | case bp_step_resume: | |
2324 | case bp_through_sigtramp: | |
2325 | case bp_watchpoint_scope: | |
2326 | case bp_call_dummy: | |
2327 | default: | |
2328 | return PRINT_UNKNOWN; | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | /* Generic routine for printing messages indicating why we | |
2333 | stopped. The behavior of this function depends on the value | |
2334 | 'print_it' in the bpstat structure. Under some circumstances we | |
2335 | may decide not to print anything here and delegate the task to | |
2336 | normal_stop(). */ | |
2337 | ||
2338 | static enum print_stop_action | |
2339 | print_bp_stop_message (bpstat bs) | |
2340 | { | |
2341 | switch (bs->print_it) | |
2342 | { | |
2343 | case print_it_noop: | |
2344 | /* Nothing should be printed for this bpstat entry. */ | |
2345 | return PRINT_UNKNOWN; | |
2346 | break; | |
2347 | ||
2348 | case print_it_done: | |
2349 | /* We still want to print the frame, but we already printed the | |
2350 | relevant messages. */ | |
2351 | return PRINT_SRC_AND_LOC; | |
2352 | break; | |
2353 | ||
2354 | case print_it_normal: | |
3086aeae DJ |
2355 | /* Normal case. Call the breakpoint's print_it method, or |
2356 | print_it_typical. */ | |
2357 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2358 | && bs->breakpoint_at->ops->print_it != NULL) | |
2359 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2360 | else | |
2361 | return print_it_typical (bs); | |
e514a9d6 | 2362 | break; |
3086aeae | 2363 | |
e514a9d6 | 2364 | default: |
8e65ff28 AC |
2365 | internal_error (__FILE__, __LINE__, |
2366 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2367 | break; |
c906108c | 2368 | } |
c906108c SS |
2369 | } |
2370 | ||
e514a9d6 JM |
2371 | /* Print a message indicating what happened. This is called from |
2372 | normal_stop(). The input to this routine is the head of the bpstat | |
2373 | list - a list of the eventpoints that caused this stop. This | |
2374 | routine calls the generic print routine for printing a message | |
2375 | about reasons for stopping. This will print (for example) the | |
2376 | "Breakpoint n," part of the output. The return value of this | |
2377 | routine is one of: | |
c906108c | 2378 | |
917317f4 JM |
2379 | PRINT_UNKNOWN: Means we printed nothing |
2380 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2381 | code to print the location. An example is |
2382 | "Breakpoint 1, " which should be followed by | |
2383 | the location. | |
917317f4 | 2384 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2385 | to also print the location part of the message. |
2386 | An example is the catch/throw messages, which | |
917317f4 JM |
2387 | don't require a location appended to the end. |
2388 | PRINT_NOTHING: We have done some printing and we don't need any | |
2389 | further info to be printed.*/ | |
c906108c | 2390 | |
917317f4 | 2391 | enum print_stop_action |
fba45db2 | 2392 | bpstat_print (bpstat bs) |
c906108c SS |
2393 | { |
2394 | int val; | |
c5aa993b | 2395 | |
c906108c | 2396 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2397 | (Currently all watchpoints go on the bpstat whether hit or not. |
2398 | That probably could (should) be changed, provided care is taken | |
c906108c | 2399 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2400 | for (; bs; bs = bs->next) |
2401 | { | |
2402 | val = print_bp_stop_message (bs); | |
2403 | if (val == PRINT_SRC_ONLY | |
2404 | || val == PRINT_SRC_AND_LOC | |
2405 | || val == PRINT_NOTHING) | |
2406 | return val; | |
2407 | } | |
c906108c | 2408 | |
e514a9d6 JM |
2409 | /* We reached the end of the chain, or we got a null BS to start |
2410 | with and nothing was printed. */ | |
917317f4 | 2411 | return PRINT_UNKNOWN; |
c906108c SS |
2412 | } |
2413 | ||
2414 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2415 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2416 | The argument is a "struct expression *" that has been cast to char * to | |
2417 | make it pass through catch_errors. */ | |
2418 | ||
2419 | static int | |
4efb68b1 | 2420 | breakpoint_cond_eval (void *exp) |
c906108c | 2421 | { |
278cd55f | 2422 | struct value *mark = value_mark (); |
c5aa993b | 2423 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2424 | value_free_to_mark (mark); |
2425 | return i; | |
2426 | } | |
2427 | ||
2428 | /* Allocate a new bpstat and chain it to the current one. */ | |
2429 | ||
2430 | static bpstat | |
831662b3 | 2431 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2432 | { |
2433 | bpstat bs; | |
2434 | ||
2435 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2436 | cbs->next = bs; | |
2437 | bs->breakpoint_at = b; | |
2438 | /* If the condition is false, etc., don't do the commands. */ | |
2439 | bs->commands = NULL; | |
2440 | bs->old_val = NULL; | |
2441 | bs->print_it = print_it_normal; | |
2442 | return bs; | |
2443 | } | |
2444 | \f | |
2445 | /* Possible return values for watchpoint_check (this can't be an enum | |
2446 | because of check_errors). */ | |
2447 | /* The watchpoint has been deleted. */ | |
2448 | #define WP_DELETED 1 | |
2449 | /* The value has changed. */ | |
2450 | #define WP_VALUE_CHANGED 2 | |
2451 | /* The value has not changed. */ | |
2452 | #define WP_VALUE_NOT_CHANGED 3 | |
2453 | ||
2454 | #define BP_TEMPFLAG 1 | |
2455 | #define BP_HARDWAREFLAG 2 | |
2456 | ||
2457 | /* Check watchpoint condition. */ | |
2458 | ||
2459 | static int | |
4efb68b1 | 2460 | watchpoint_check (void *p) |
c906108c SS |
2461 | { |
2462 | bpstat bs = (bpstat) p; | |
2463 | struct breakpoint *b; | |
2464 | struct frame_info *fr; | |
2465 | int within_current_scope; | |
2466 | ||
2467 | b = bs->breakpoint_at; | |
2468 | ||
2469 | if (b->exp_valid_block == NULL) | |
2470 | within_current_scope = 1; | |
2471 | else | |
2472 | { | |
2473 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2474 | any chance of handling watchpoints on local variables, we'll need |
2475 | the frame chain (so we can determine if we're in scope). */ | |
2476 | reinit_frame_cache (); | |
101dcfbe | 2477 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2478 | within_current_scope = (fr != NULL); |
c12260ac CV |
2479 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2480 | in the function but the stack frame has already been invalidated. | |
2481 | Since we can't rely on the values of local variables after the | |
2482 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2483 | state as `not changed' without further checking. |
2484 | ||
2485 | vinschen/2003-09-04: The former implementation left out the case | |
2486 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2487 | because the current PC is currently in an epilogue. Calling | |
2488 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2489 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2490 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2491 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2492 | if (fr && within_current_scope) |
c906108c SS |
2493 | /* If we end up stopping, the current frame will get selected |
2494 | in normal_stop. So this call to select_frame won't affect | |
2495 | the user. */ | |
0f7d239c | 2496 | select_frame (fr); |
c906108c | 2497 | } |
c5aa993b | 2498 | |
c906108c SS |
2499 | if (within_current_scope) |
2500 | { | |
2501 | /* We use value_{,free_to_}mark because it could be a | |
2502 | *long* time before we return to the command level and | |
c5aa993b JM |
2503 | call free_all_values. We can't call free_all_values because |
2504 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2505 | |
278cd55f AC |
2506 | struct value *mark = value_mark (); |
2507 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2508 | if (!value_equal (b->val, new_val)) |
2509 | { | |
2510 | release_value (new_val); | |
2511 | value_free_to_mark (mark); | |
2512 | bs->old_val = b->val; | |
2513 | b->val = new_val; | |
2514 | /* We will stop here */ | |
2515 | return WP_VALUE_CHANGED; | |
2516 | } | |
2517 | else | |
2518 | { | |
2519 | /* Nothing changed, don't do anything. */ | |
2520 | value_free_to_mark (mark); | |
2521 | /* We won't stop here */ | |
2522 | return WP_VALUE_NOT_CHANGED; | |
2523 | } | |
2524 | } | |
2525 | else | |
2526 | { | |
2527 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2528 | if we temporarily ignored the watchpoint, then when |
2529 | we reenter the block in which it is valid it contains | |
2530 | garbage (in the case of a function, it may have two | |
2531 | garbage values, one before and one after the prologue). | |
2532 | So we can't even detect the first assignment to it and | |
2533 | watch after that (since the garbage may or may not equal | |
2534 | the first value assigned). */ | |
4ce44c66 JM |
2535 | /* We print all the stop information in print_it_typical(), but |
2536 | in this case, by the time we call print_it_typical() this bp | |
2537 | will be deleted already. So we have no choice but print the | |
2538 | information here. */ | |
9dc5e2a9 | 2539 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 2540 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); |
8b93c638 JM |
2541 | ui_out_text (uiout, "\nWatchpoint "); |
2542 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2543 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2544 | which its expression is valid.\n"); | |
4ce44c66 | 2545 | |
c906108c | 2546 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2547 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2548 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2549 | |
2550 | return WP_DELETED; | |
2551 | } | |
2552 | } | |
2553 | ||
9709f61c | 2554 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2555 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2556 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2557 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2558 | |
2559 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2560 | don't understand this stop. Result is a chain of bpstat's such that: | |
2561 | ||
c5aa993b | 2562 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2563 | |
c5aa993b | 2564 | if we understand why we stopped, the result is not null. |
c906108c | 2565 | |
c5aa993b JM |
2566 | Each element of the chain refers to a particular breakpoint or |
2567 | watchpoint at which we have stopped. (We may have stopped for | |
2568 | several reasons concurrently.) | |
c906108c | 2569 | |
c5aa993b JM |
2570 | Each element of the chain has valid next, breakpoint_at, |
2571 | commands, FIXME??? fields. */ | |
c906108c SS |
2572 | |
2573 | bpstat | |
00d4360e | 2574 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2575 | { |
52f0bd74 | 2576 | struct breakpoint *b, *temp; |
c906108c SS |
2577 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2578 | int real_breakpoint = 0; | |
2579 | /* Root of the chain of bpstat's */ | |
2580 | struct bpstats root_bs[1]; | |
2581 | /* Pointer to the last thing in the chain currently. */ | |
2582 | bpstat bs = root_bs; | |
fa5281d0 | 2583 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2584 | |
c906108c | 2585 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2586 | { |
468d015d | 2587 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2588 | continue; |
2589 | ||
2590 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2591 | && b->type != bp_hardware_watchpoint |
2592 | && b->type != bp_read_watchpoint | |
2593 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2594 | && b->type != bp_hardware_breakpoint |
2595 | && b->type != bp_catch_fork | |
2596 | && b->type != bp_catch_vfork | |
2597 | && b->type != bp_catch_exec | |
2598 | && b->type != bp_catch_catch | |
2599 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2600 | { |
5cab636d | 2601 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2602 | continue; |
2603 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2604 | && section_is_overlay (b->loc->section) |
2605 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2606 | continue; |
2607 | } | |
c906108c | 2608 | |
46587c42 JJ |
2609 | /* Continuable hardware watchpoints are treated as non-existent if the |
2610 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2611 | some data address). Otherwise gdb won't stop on a break instruction | |
2612 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2613 | been defined. */ | |
2614 | ||
2615 | if ((b->type == bp_hardware_watchpoint | |
2616 | || b->type == bp_read_watchpoint | |
2617 | || b->type == bp_access_watchpoint) | |
2618 | && !stopped_by_watchpoint) | |
2619 | continue; | |
2620 | ||
c02f5703 MS |
2621 | if (b->type == bp_hardware_breakpoint) |
2622 | { | |
9709f61c | 2623 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2624 | continue; |
2625 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2626 | && section_is_overlay (b->loc->section) |
2627 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2628 | continue; |
2629 | } | |
c5aa993b | 2630 | |
c5aa993b JM |
2631 | /* Is this a catchpoint of a load or unload? If so, did we |
2632 | get a load or unload of the specified library? If not, | |
2633 | ignore it. */ | |
2634 | if ((b->type == bp_catch_load) | |
c906108c | 2635 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2636 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2637 | || ((b->dll_pathname != NULL) |
53a5351d | 2638 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2639 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2640 | PIDGET (inferior_ptid))) | |
53a5351d | 2641 | != 0))) |
c906108c | 2642 | #endif |
c5aa993b JM |
2643 | ) |
2644 | continue; | |
2645 | ||
2646 | if ((b->type == bp_catch_unload) | |
c906108c | 2647 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2648 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2649 | || ((b->dll_pathname != NULL) |
53a5351d | 2650 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2651 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2652 | PIDGET (inferior_ptid))) | |
53a5351d | 2653 | != 0))) |
c906108c | 2654 | #endif |
c5aa993b JM |
2655 | ) |
2656 | continue; | |
c906108c | 2657 | |
c5aa993b | 2658 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2659 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2660 | &b->forked_inferior_pid)) | |
c5aa993b | 2661 | continue; |
c906108c | 2662 | |
c5aa993b | 2663 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2664 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2665 | &b->forked_inferior_pid)) | |
c5aa993b | 2666 | continue; |
c906108c | 2667 | |
c5aa993b | 2668 | if ((b->type == bp_catch_exec) |
47932f85 | 2669 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2670 | continue; |
c906108c | 2671 | |
c5aa993b JM |
2672 | if (ep_is_exception_catchpoint (b) && |
2673 | !(current_exception_event = target_get_current_exception_event ())) | |
2674 | continue; | |
c906108c | 2675 | |
c5aa993b JM |
2676 | /* Come here if it's a watchpoint, or if the break address matches */ |
2677 | ||
2678 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2679 | ||
2680 | /* Watchpoints may change this, if not found to have triggered. */ | |
2681 | bs->stop = 1; | |
2682 | bs->print = 1; | |
2683 | ||
53a5351d JM |
2684 | if (b->type == bp_watchpoint || |
2685 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2686 | { |
9ebf4acf AC |
2687 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2688 | b->number); | |
2689 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2690 | int e = catch_errors (watchpoint_check, bs, message, | |
2691 | RETURN_MASK_ALL); | |
2692 | do_cleanups (cleanups); | |
2693 | switch (e) | |
c5aa993b JM |
2694 | { |
2695 | case WP_DELETED: | |
2696 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2697 | /* Actually this is superfluous, because by the time we |
2698 | call print_it_typical() the wp will be already deleted, | |
2699 | and the function will return immediately. */ | |
c5aa993b JM |
2700 | bs->print_it = print_it_done; |
2701 | /* Stop. */ | |
2702 | break; | |
2703 | case WP_VALUE_CHANGED: | |
2704 | /* Stop. */ | |
2705 | ++(b->hit_count); | |
2706 | break; | |
2707 | case WP_VALUE_NOT_CHANGED: | |
2708 | /* Don't stop. */ | |
2709 | bs->print_it = print_it_noop; | |
2710 | bs->stop = 0; | |
c5aa993b JM |
2711 | continue; |
2712 | default: | |
2713 | /* Can't happen. */ | |
2714 | /* FALLTHROUGH */ | |
2715 | case 0: | |
2716 | /* Error from catch_errors. */ | |
2717 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2718 | if (b->related_breakpoint) | |
b5de0fa7 EZ |
2719 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2720 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2721 | /* We've already printed what needs to be printed. */ |
2722 | bs->print_it = print_it_done; | |
2723 | ||
2724 | /* Stop. */ | |
2725 | break; | |
2726 | } | |
2727 | } | |
53a5351d JM |
2728 | else if (b->type == bp_read_watchpoint || |
2729 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2730 | { |
2731 | CORE_ADDR addr; | |
278cd55f | 2732 | struct value *v; |
c5aa993b JM |
2733 | int found = 0; |
2734 | ||
4aa7a7f5 | 2735 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b JM |
2736 | continue; |
2737 | for (v = b->val_chain; v; v = v->next) | |
2738 | { | |
5c44784c JM |
2739 | if (VALUE_LVAL (v) == lval_memory |
2740 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2741 | { |
df407dfe | 2742 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2743 | |
2744 | if (v == b->val_chain | |
2745 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2746 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2747 | { | |
2748 | CORE_ADDR vaddr; | |
2749 | ||
df407dfe | 2750 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2751 | /* Exact match not required. Within range is |
2752 | sufficient. */ | |
2753 | if (addr >= vaddr && | |
df407dfe | 2754 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2755 | found = 1; |
2756 | } | |
c5aa993b JM |
2757 | } |
2758 | } | |
2759 | if (found) | |
9ebf4acf AC |
2760 | { |
2761 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2762 | b->number); | |
2763 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2764 | int e = catch_errors (watchpoint_check, bs, message, | |
2765 | RETURN_MASK_ALL); | |
2766 | do_cleanups (cleanups); | |
2767 | switch (e) | |
2768 | { | |
2769 | case WP_DELETED: | |
2770 | /* We've already printed what needs to be printed. */ | |
2771 | bs->print_it = print_it_done; | |
2772 | /* Stop. */ | |
2773 | break; | |
2774 | case WP_VALUE_CHANGED: | |
2775 | if (b->type == bp_read_watchpoint) | |
2776 | { | |
2777 | /* Don't stop: read watchpoints shouldn't fire if | |
2778 | the value has changed. This is for targets | |
2779 | which cannot set read-only watchpoints. */ | |
2780 | bs->print_it = print_it_noop; | |
2781 | bs->stop = 0; | |
2782 | continue; | |
2783 | } | |
2784 | ++(b->hit_count); | |
2785 | break; | |
2786 | case WP_VALUE_NOT_CHANGED: | |
2787 | /* Stop. */ | |
2788 | ++(b->hit_count); | |
2789 | break; | |
2790 | default: | |
2791 | /* Can't happen. */ | |
2792 | case 0: | |
2793 | /* Error from catch_errors. */ | |
2794 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2795 | if (b->related_breakpoint) | |
2796 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2797 | b->disposition = disp_del_at_next_stop; | |
2798 | /* We've already printed what needs to be printed. */ | |
2799 | bs->print_it = print_it_done; | |
2800 | break; | |
2801 | } | |
2802 | } | |
53a5351d JM |
2803 | else /* found == 0 */ |
2804 | { | |
2805 | /* This is a case where some watchpoint(s) triggered, | |
2806 | but not at the address of this watchpoint (FOUND | |
2807 | was left zero). So don't print anything for this | |
2808 | watchpoint. */ | |
2809 | bs->print_it = print_it_noop; | |
2810 | bs->stop = 0; | |
2811 | continue; | |
2812 | } | |
c5aa993b JM |
2813 | } |
2814 | else | |
2815 | { | |
2816 | /* By definition, an encountered breakpoint is a triggered | |
2817 | breakpoint. */ | |
2818 | ++(b->hit_count); | |
c906108c | 2819 | |
c5aa993b JM |
2820 | real_breakpoint = 1; |
2821 | } | |
2822 | ||
818dd999 AC |
2823 | if (frame_id_p (b->frame_id) |
2824 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2825 | bs->stop = 0; |
2826 | else | |
2827 | { | |
2828 | int value_is_zero = 0; | |
2829 | ||
2830 | if (b->cond) | |
2831 | { | |
2832 | /* Need to select the frame, with all that implies | |
2833 | so that the conditions will have the right context. */ | |
0f7d239c | 2834 | select_frame (get_current_frame ()); |
c5aa993b JM |
2835 | value_is_zero |
2836 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2837 | "Error in testing breakpoint condition:\n", | |
2838 | RETURN_MASK_ALL); | |
2839 | /* FIXME-someday, should give breakpoint # */ | |
2840 | free_all_values (); | |
2841 | } | |
2842 | if (b->cond && value_is_zero) | |
2843 | { | |
2844 | bs->stop = 0; | |
2845 | /* Don't consider this a hit. */ | |
2846 | --(b->hit_count); | |
2847 | } | |
fa5281d0 DJ |
2848 | else if (b->thread != -1 && b->thread != thread_id) |
2849 | { | |
2850 | bs->stop = 0; | |
2851 | /* Don't consider this a hit. */ | |
2852 | --(b->hit_count); | |
2853 | } | |
c5aa993b JM |
2854 | else if (b->ignore_count > 0) |
2855 | { | |
2856 | b->ignore_count--; | |
5c44784c | 2857 | annotate_ignore_count_change (); |
c5aa993b JM |
2858 | bs->stop = 0; |
2859 | } | |
2860 | else | |
2861 | { | |
2862 | /* We will stop here */ | |
b5de0fa7 EZ |
2863 | if (b->disposition == disp_disable) |
2864 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2865 | if (b->silent) |
2866 | bs->print = 0; | |
552f4abf | 2867 | bs->commands = b->commands; |
c5aa993b | 2868 | if (bs->commands && |
6314a349 AC |
2869 | (strcmp ("silent", bs->commands->line) == 0 |
2870 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2871 | { |
2872 | bs->commands = bs->commands->next; | |
c906108c | 2873 | bs->print = 0; |
c5aa993b | 2874 | } |
552f4abf | 2875 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2876 | } |
2877 | } | |
2878 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2879 | if (bs->stop == 0 || bs->print == 0) | |
2880 | bs->print_it = print_it_noop; | |
2881 | } | |
c906108c SS |
2882 | |
2883 | bs->next = NULL; /* Terminate the chain */ | |
2884 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2885 | ||
c906108c SS |
2886 | /* The value of a hardware watchpoint hasn't changed, but the |
2887 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2888 | if (bs && !bs->stop && |
c906108c SS |
2889 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2890 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2891 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2892 | { | |
2893 | remove_breakpoints (); | |
2894 | insert_breakpoints (); | |
2895 | } | |
2896 | return bs; | |
2897 | } | |
2898 | \f | |
2899 | /* Tell what to do about this bpstat. */ | |
2900 | struct bpstat_what | |
fba45db2 | 2901 | bpstat_what (bpstat bs) |
c906108c SS |
2902 | { |
2903 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2904 | enum class |
2905 | { | |
2906 | /* This bpstat element has no effect on the main_action. */ | |
2907 | no_effect = 0, | |
2908 | ||
2909 | /* There was a watchpoint, stop but don't print. */ | |
2910 | wp_silent, | |
c906108c | 2911 | |
c5aa993b JM |
2912 | /* There was a watchpoint, stop and print. */ |
2913 | wp_noisy, | |
c906108c | 2914 | |
c5aa993b JM |
2915 | /* There was a breakpoint but we're not stopping. */ |
2916 | bp_nostop, | |
c906108c | 2917 | |
c5aa993b JM |
2918 | /* There was a breakpoint, stop but don't print. */ |
2919 | bp_silent, | |
c906108c | 2920 | |
c5aa993b JM |
2921 | /* There was a breakpoint, stop and print. */ |
2922 | bp_noisy, | |
c906108c | 2923 | |
c5aa993b JM |
2924 | /* We hit the longjmp breakpoint. */ |
2925 | long_jump, | |
c906108c | 2926 | |
c5aa993b JM |
2927 | /* We hit the longjmp_resume breakpoint. */ |
2928 | long_resume, | |
c906108c | 2929 | |
c5aa993b JM |
2930 | /* We hit the step_resume breakpoint. */ |
2931 | step_resume, | |
c906108c | 2932 | |
c5aa993b JM |
2933 | /* We hit the through_sigtramp breakpoint. */ |
2934 | through_sig, | |
c906108c | 2935 | |
c5aa993b JM |
2936 | /* We hit the shared library event breakpoint. */ |
2937 | shlib_event, | |
c906108c | 2938 | |
c5aa993b JM |
2939 | /* We caught a shared library event. */ |
2940 | catch_shlib_event, | |
c906108c | 2941 | |
c5aa993b JM |
2942 | /* This is just used to count how many enums there are. */ |
2943 | class_last | |
c906108c SS |
2944 | }; |
2945 | ||
2946 | /* Here is the table which drives this routine. So that we can | |
2947 | format it pretty, we define some abbreviations for the | |
2948 | enum bpstat_what codes. */ | |
2949 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2950 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2951 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2952 | #define sgl BPSTAT_WHAT_SINGLE | |
2953 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2954 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2955 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2956 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2957 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2958 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2959 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2960 | ||
2961 | /* "Can't happen." Might want to print an error message. | |
2962 | abort() is not out of the question, but chances are GDB is just | |
2963 | a bit confused, not unusable. */ | |
2964 | #define err BPSTAT_WHAT_STOP_NOISY | |
2965 | ||
2966 | /* Given an old action and a class, come up with a new action. */ | |
2967 | /* One interesting property of this table is that wp_silent is the same | |
2968 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2969 | after stopping, the check for whether to step over a breakpoint | |
2970 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2971 | reference to how we stopped. We retain separate wp_silent and |
2972 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2973 | |
2974 | Another possibly interesting property of this table is that | |
2975 | there's a partial ordering, priority-like, of the actions. Once | |
2976 | you've decided that some action is appropriate, you'll never go | |
2977 | back and decide something of a lower priority is better. The | |
2978 | ordering is: | |
2979 | ||
7e73cedf | 2980 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2981 | sgl < clrs shl shlr slr sn sr ss ts |
2982 | slr < err shl shlr sn sr ss ts | |
2983 | clr < clrs err shl shlr sn sr ss ts | |
2984 | clrs < err shl shlr sn sr ss ts | |
2985 | ss < shl shlr sn sr ts | |
2986 | sn < shl shlr sr ts | |
2987 | sr < shl shlr ts | |
2988 | shl < shlr | |
2989 | ts < | |
2990 | shlr < | |
2991 | ||
43ff13b4 JM |
2992 | What I think this means is that we don't need a damned table |
2993 | here. If you just put the rows and columns in the right order, | |
2994 | it'd look awfully regular. We could simply walk the bpstat list | |
2995 | and choose the highest priority action we find, with a little | |
2996 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2997 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2998 | is messy anyway). */ | |
c906108c SS |
2999 | |
3000 | /* step_resume entries: a step resume breakpoint overrides another | |
3001 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3002 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3003 | /* We handle the through_sigtramp_breakpoint the same way; having both |
3004 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
3005 | ||
3006 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3007 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3008 | { | |
3009 | /* old action */ | |
3010 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3011 | */ | |
3012 | /*no_effect */ | |
3013 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3014 | /*wp_silent */ | |
3015 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3016 | /*wp_noisy */ | |
3017 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3018 | /*bp_nostop */ | |
3019 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3020 | /*bp_silent */ | |
3021 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3022 | /*bp_noisy */ | |
3023 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3024 | /*long_jump */ | |
a48bb0b3 | 3025 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3026 | /*long_resume */ |
3027 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3028 | /*step_resume */ | |
3029 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3030 | /*through_sig */ | |
3031 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3032 | /*shlib */ | |
3033 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3034 | /*catch_shlib */ | |
3035 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3036 | }; | |
c906108c SS |
3037 | |
3038 | #undef kc | |
3039 | #undef ss | |
3040 | #undef sn | |
3041 | #undef sgl | |
3042 | #undef slr | |
3043 | #undef clr | |
3044 | #undef clrs | |
3045 | #undef err | |
3046 | #undef sr | |
3047 | #undef ts | |
3048 | #undef shl | |
3049 | #undef shlr | |
3050 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3051 | struct bpstat_what retval; | |
3052 | ||
3053 | retval.call_dummy = 0; | |
3054 | for (; bs != NULL; bs = bs->next) | |
3055 | { | |
3056 | enum class bs_class = no_effect; | |
3057 | if (bs->breakpoint_at == NULL) | |
3058 | /* I suspect this can happen if it was a momentary breakpoint | |
3059 | which has since been deleted. */ | |
3060 | continue; | |
3061 | switch (bs->breakpoint_at->type) | |
3062 | { | |
3063 | case bp_none: | |
3064 | continue; | |
3065 | ||
3066 | case bp_breakpoint: | |
3067 | case bp_hardware_breakpoint: | |
3068 | case bp_until: | |
3069 | case bp_finish: | |
3070 | if (bs->stop) | |
3071 | { | |
3072 | if (bs->print) | |
3073 | bs_class = bp_noisy; | |
3074 | else | |
3075 | bs_class = bp_silent; | |
3076 | } | |
3077 | else | |
3078 | bs_class = bp_nostop; | |
3079 | break; | |
3080 | case bp_watchpoint: | |
3081 | case bp_hardware_watchpoint: | |
3082 | case bp_read_watchpoint: | |
3083 | case bp_access_watchpoint: | |
3084 | if (bs->stop) | |
3085 | { | |
3086 | if (bs->print) | |
3087 | bs_class = wp_noisy; | |
3088 | else | |
3089 | bs_class = wp_silent; | |
3090 | } | |
3091 | else | |
53a5351d JM |
3092 | /* There was a watchpoint, but we're not stopping. |
3093 | This requires no further action. */ | |
c906108c SS |
3094 | bs_class = no_effect; |
3095 | break; | |
3096 | case bp_longjmp: | |
3097 | bs_class = long_jump; | |
3098 | break; | |
3099 | case bp_longjmp_resume: | |
3100 | bs_class = long_resume; | |
3101 | break; | |
3102 | case bp_step_resume: | |
3103 | if (bs->stop) | |
3104 | { | |
3105 | bs_class = step_resume; | |
3106 | } | |
3107 | else | |
3108 | /* It is for the wrong frame. */ | |
3109 | bs_class = bp_nostop; | |
3110 | break; | |
3111 | case bp_through_sigtramp: | |
3112 | bs_class = through_sig; | |
3113 | break; | |
3114 | case bp_watchpoint_scope: | |
3115 | bs_class = bp_nostop; | |
3116 | break; | |
c5aa993b JM |
3117 | case bp_shlib_event: |
3118 | bs_class = shlib_event; | |
3119 | break; | |
c4093a6a | 3120 | case bp_thread_event: |
1900040c | 3121 | case bp_overlay_event: |
c4093a6a JM |
3122 | bs_class = bp_nostop; |
3123 | break; | |
c5aa993b JM |
3124 | case bp_catch_load: |
3125 | case bp_catch_unload: | |
3126 | /* Only if this catchpoint triggered should we cause the | |
3127 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3128 | catchpoint. */ | |
3129 | if (bs->stop) | |
3130 | bs_class = catch_shlib_event; | |
3131 | else | |
3132 | bs_class = no_effect; | |
3133 | break; | |
3134 | case bp_catch_fork: | |
3135 | case bp_catch_vfork: | |
3136 | case bp_catch_exec: | |
3137 | if (bs->stop) | |
3138 | { | |
3139 | if (bs->print) | |
3140 | bs_class = bp_noisy; | |
3141 | else | |
3142 | bs_class = bp_silent; | |
3143 | } | |
3144 | else | |
53a5351d JM |
3145 | /* There was a catchpoint, but we're not stopping. |
3146 | This requires no further action. */ | |
c5aa993b JM |
3147 | bs_class = no_effect; |
3148 | break; | |
3149 | case bp_catch_catch: | |
3150 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3151 | bs_class = bp_nostop; | |
3152 | else if (bs->stop) | |
3153 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3154 | break; | |
3155 | case bp_catch_throw: | |
3156 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3157 | bs_class = bp_nostop; | |
3158 | else if (bs->stop) | |
3159 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3160 | break; |
c906108c | 3161 | case bp_call_dummy: |
53a5351d JM |
3162 | /* Make sure the action is stop (silent or noisy), |
3163 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3164 | bs_class = bp_silent; |
3165 | retval.call_dummy = 1; | |
3166 | break; | |
3167 | } | |
c5aa993b | 3168 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3169 | } |
3170 | retval.main_action = current_action; | |
3171 | return retval; | |
3172 | } | |
3173 | ||
3174 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3175 | without hardware support). This isn't related to a specific bpstat, | |
3176 | just to things like whether watchpoints are set. */ | |
3177 | ||
c5aa993b | 3178 | int |
fba45db2 | 3179 | bpstat_should_step (void) |
c906108c SS |
3180 | { |
3181 | struct breakpoint *b; | |
3182 | ALL_BREAKPOINTS (b) | |
468d015d | 3183 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3184 | return 1; |
c906108c SS |
3185 | return 0; |
3186 | } | |
3187 | ||
3188 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3189 | int | |
fba45db2 | 3190 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3191 | { |
075f6582 DJ |
3192 | struct bp_location *bpt; |
3193 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3194 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3195 | && bpt->inserted |
3196 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3197 | return 1; |
c906108c SS |
3198 | return 0; |
3199 | } | |
c906108c | 3200 | \f |
c5aa993b | 3201 | |
c906108c SS |
3202 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3203 | function returns another bpstat which contains only the catchpoints | |
3204 | on that first list, if any. */ | |
3205 | void | |
fba45db2 | 3206 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3207 | { |
3208 | struct bpstats root_bs[1]; | |
3209 | bpstat bs = root_bs; | |
3210 | struct breakpoint *ep; | |
3211 | char *dll_pathname; | |
3212 | ||
c906108c SS |
3213 | bpstat_clear (cp_list); |
3214 | root_bs->next = NULL; | |
c5aa993b JM |
3215 | |
3216 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3217 | { |
3218 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3219 | ep = ep_list->breakpoint_at; | |
3220 | if (ep == NULL) | |
c5aa993b JM |
3221 | break; |
3222 | if ((ep->type != bp_catch_load) && | |
3223 | (ep->type != bp_catch_unload) && | |
3224 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3225 | (ep->type != bp_catch_throw)) |
3226 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3227 | continue; |
3228 | ||
c906108c SS |
3229 | /* Yes; add it to the list. */ |
3230 | bs = bpstat_alloc (ep, bs); | |
3231 | *bs = *ep_list; | |
3232 | bs->next = NULL; | |
3233 | bs = root_bs->next; | |
c5aa993b | 3234 | |
c906108c SS |
3235 | #if defined(SOLIB_ADD) |
3236 | /* Also, for each triggered catchpoint, tag it with the name of | |
3237 | the library that caused this trigger. (We copy the name now, | |
3238 | because it's only guaranteed to be available NOW, when the | |
3239 | catchpoint triggers. Clients who may wish to know the name | |
3240 | later must get it from the catchpoint itself.) */ | |
3241 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3242 | xfree (ep->triggered_dll_pathname); |
c906108c | 3243 | if (ep->type == bp_catch_load) |
39f77062 KB |
3244 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3245 | PIDGET (inferior_ptid)); | |
c906108c | 3246 | else |
39f77062 KB |
3247 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3248 | PIDGET (inferior_ptid)); | |
c906108c SS |
3249 | #else |
3250 | dll_pathname = NULL; | |
3251 | #endif | |
3252 | if (dll_pathname) | |
3253 | { | |
53a5351d JM |
3254 | ep->triggered_dll_pathname = (char *) |
3255 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3256 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3257 | } | |
3258 | else | |
3259 | ep->triggered_dll_pathname = NULL; | |
3260 | } | |
c5aa993b | 3261 | |
c906108c SS |
3262 | *cp_list = bs; |
3263 | } | |
3264 | ||
c4093a6a | 3265 | /* Print B to gdb_stdout. */ |
c906108c | 3266 | static void |
c4093a6a JM |
3267 | print_one_breakpoint (struct breakpoint *b, |
3268 | CORE_ADDR *last_addr) | |
c906108c | 3269 | { |
52f0bd74 AC |
3270 | struct command_line *l; |
3271 | struct symbol *sym; | |
c4093a6a JM |
3272 | struct ep_type_description |
3273 | { | |
3274 | enum bptype type; | |
3275 | char *description; | |
3276 | }; | |
3277 | static struct ep_type_description bptypes[] = | |
c906108c | 3278 | { |
c5aa993b JM |
3279 | {bp_none, "?deleted?"}, |
3280 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3281 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3282 | {bp_until, "until"}, |
3283 | {bp_finish, "finish"}, | |
3284 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3285 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3286 | {bp_read_watchpoint, "read watchpoint"}, |
3287 | {bp_access_watchpoint, "acc watchpoint"}, | |
3288 | {bp_longjmp, "longjmp"}, | |
3289 | {bp_longjmp_resume, "longjmp resume"}, | |
3290 | {bp_step_resume, "step resume"}, | |
3291 | {bp_through_sigtramp, "sigtramp"}, | |
3292 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3293 | {bp_call_dummy, "call dummy"}, | |
3294 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3295 | {bp_thread_event, "thread events"}, |
1900040c | 3296 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3297 | {bp_catch_load, "catch load"}, |
3298 | {bp_catch_unload, "catch unload"}, | |
3299 | {bp_catch_fork, "catch fork"}, | |
3300 | {bp_catch_vfork, "catch vfork"}, | |
3301 | {bp_catch_exec, "catch exec"}, | |
3302 | {bp_catch_catch, "catch catch"}, | |
3303 | {bp_catch_throw, "catch throw"} | |
3304 | }; | |
c4093a6a | 3305 | |
c5aa993b JM |
3306 | static char *bpdisps[] = |
3307 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3308 | static char bpenables[] = "nynny"; |
c906108c | 3309 | char wrap_indent[80]; |
8b93c638 JM |
3310 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3311 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3312 | struct cleanup *bkpt_chain; |
c906108c | 3313 | |
c4093a6a | 3314 | annotate_record (); |
3b31d625 | 3315 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3316 | |
3317 | /* 1 */ | |
3318 | annotate_field (0); | |
8b93c638 | 3319 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3320 | |
3321 | /* 2 */ | |
3322 | annotate_field (1); | |
3323 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3324 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3325 | internal_error (__FILE__, __LINE__, |
3326 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3327 | (int) b->type); |
8b93c638 | 3328 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3329 | |
3330 | /* 3 */ | |
3331 | annotate_field (2); | |
8b93c638 | 3332 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3333 | |
3334 | /* 4 */ | |
3335 | annotate_field (3); | |
b5de0fa7 | 3336 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3337 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3338 | |
3339 | /* 5 and 6 */ | |
3340 | strcpy (wrap_indent, " "); | |
3341 | if (addressprint) | |
75ac9d7b MS |
3342 | { |
3343 | if (TARGET_ADDR_BIT <= 32) | |
3344 | strcat (wrap_indent, " "); | |
3345 | else | |
3346 | strcat (wrap_indent, " "); | |
3347 | } | |
c906108c | 3348 | |
3086aeae DJ |
3349 | if (b->ops != NULL && b->ops->print_one != NULL) |
3350 | b->ops->print_one (b, last_addr); | |
3351 | else | |
3352 | switch (b->type) | |
3353 | { | |
3354 | case bp_none: | |
3355 | internal_error (__FILE__, __LINE__, | |
3356 | "print_one_breakpoint: bp_none encountered\n"); | |
3357 | break; | |
c906108c | 3358 | |
3086aeae DJ |
3359 | case bp_watchpoint: |
3360 | case bp_hardware_watchpoint: | |
3361 | case bp_read_watchpoint: | |
3362 | case bp_access_watchpoint: | |
3363 | /* Field 4, the address, is omitted (which makes the columns | |
3364 | not line up too nicely with the headers, but the effect | |
3365 | is relatively readable). */ | |
3366 | if (addressprint) | |
3367 | ui_out_field_skip (uiout, "addr"); | |
3368 | annotate_field (5); | |
3369 | print_expression (b->exp, stb->stream); | |
3370 | ui_out_field_stream (uiout, "what", stb); | |
3371 | break; | |
3372 | ||
3373 | case bp_catch_load: | |
3374 | case bp_catch_unload: | |
3375 | /* Field 4, the address, is omitted (which makes the columns | |
3376 | not line up too nicely with the headers, but the effect | |
3377 | is relatively readable). */ | |
3378 | if (addressprint) | |
3379 | ui_out_field_skip (uiout, "addr"); | |
3380 | annotate_field (5); | |
3381 | if (b->dll_pathname == NULL) | |
3382 | { | |
3383 | ui_out_field_string (uiout, "what", "<any library>"); | |
3384 | ui_out_spaces (uiout, 1); | |
3385 | } | |
3386 | else | |
3387 | { | |
3388 | ui_out_text (uiout, "library \""); | |
3389 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3390 | ui_out_text (uiout, "\" "); | |
3391 | } | |
3392 | break; | |
3393 | ||
3394 | case bp_catch_fork: | |
3395 | case bp_catch_vfork: | |
3396 | /* Field 4, the address, is omitted (which makes the columns | |
3397 | not line up too nicely with the headers, but the effect | |
3398 | is relatively readable). */ | |
3399 | if (addressprint) | |
3400 | ui_out_field_skip (uiout, "addr"); | |
3401 | annotate_field (5); | |
3402 | if (b->forked_inferior_pid != 0) | |
3403 | { | |
3404 | ui_out_text (uiout, "process "); | |
3405 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3406 | ui_out_spaces (uiout, 1); | |
3407 | } | |
3408 | ||
3409 | case bp_catch_exec: | |
3410 | /* Field 4, the address, is omitted (which makes the columns | |
3411 | not line up too nicely with the headers, but the effect | |
3412 | is relatively readable). */ | |
3413 | if (addressprint) | |
3414 | ui_out_field_skip (uiout, "addr"); | |
3415 | annotate_field (5); | |
3416 | if (b->exec_pathname != NULL) | |
3417 | { | |
3418 | ui_out_text (uiout, "program \""); | |
3419 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3420 | ui_out_text (uiout, "\" "); | |
3421 | } | |
3422 | break; | |
3423 | ||
3424 | case bp_catch_catch: | |
3425 | /* Field 4, the address, is omitted (which makes the columns | |
3426 | not line up too nicely with the headers, but the effect | |
3427 | is relatively readable). */ | |
3428 | if (addressprint) | |
3429 | ui_out_field_skip (uiout, "addr"); | |
3430 | annotate_field (5); | |
3431 | ui_out_field_string (uiout, "what", "exception catch"); | |
3432 | ui_out_spaces (uiout, 1); | |
3433 | break; | |
3434 | ||
3435 | case bp_catch_throw: | |
3436 | /* Field 4, the address, is omitted (which makes the columns | |
3437 | not line up too nicely with the headers, but the effect | |
3438 | is relatively readable). */ | |
3439 | if (addressprint) | |
3440 | ui_out_field_skip (uiout, "addr"); | |
3441 | annotate_field (5); | |
3442 | ui_out_field_string (uiout, "what", "exception throw"); | |
3443 | ui_out_spaces (uiout, 1); | |
3444 | break; | |
3445 | ||
3446 | case bp_breakpoint: | |
3447 | case bp_hardware_breakpoint: | |
3448 | case bp_until: | |
3449 | case bp_finish: | |
3450 | case bp_longjmp: | |
3451 | case bp_longjmp_resume: | |
3452 | case bp_step_resume: | |
3453 | case bp_through_sigtramp: | |
3454 | case bp_watchpoint_scope: | |
3455 | case bp_call_dummy: | |
3456 | case bp_shlib_event: | |
3457 | case bp_thread_event: | |
3458 | case bp_overlay_event: | |
3459 | if (addressprint) | |
3460 | { | |
3461 | annotate_field (4); | |
0101ce28 | 3462 | if (b->pending) |
d5479188 | 3463 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3464 | else |
3465 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3466 | } |
3467 | annotate_field (5); | |
5cab636d | 3468 | *last_addr = b->loc->address; |
3086aeae DJ |
3469 | if (b->source_file) |
3470 | { | |
cf3a9e5b | 3471 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3472 | if (sym) |
3473 | { | |
3474 | ui_out_text (uiout, "in "); | |
3475 | ui_out_field_string (uiout, "func", | |
3476 | SYMBOL_PRINT_NAME (sym)); | |
3477 | ui_out_wrap_hint (uiout, wrap_indent); | |
3478 | ui_out_text (uiout, " at "); | |
3479 | } | |
3480 | ui_out_field_string (uiout, "file", b->source_file); | |
3481 | ui_out_text (uiout, ":"); | |
3482 | ui_out_field_int (uiout, "line", b->line_number); | |
3483 | } | |
0101ce28 JJ |
3484 | else if (b->pending) |
3485 | { | |
3486 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3487 | } | |
3086aeae DJ |
3488 | else |
3489 | { | |
5cab636d | 3490 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3491 | ui_out_field_stream (uiout, "at", stb); |
3492 | } | |
3493 | break; | |
3494 | } | |
c906108c | 3495 | |
c4093a6a JM |
3496 | if (b->thread != -1) |
3497 | { | |
8b93c638 JM |
3498 | /* FIXME: This seems to be redundant and lost here; see the |
3499 | "stop only in" line a little further down. */ | |
3500 | ui_out_text (uiout, " thread "); | |
3501 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3502 | } |
3503 | ||
8b93c638 | 3504 | ui_out_text (uiout, "\n"); |
c4093a6a | 3505 | |
818dd999 | 3506 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3507 | { |
3508 | annotate_field (6); | |
8b93c638 | 3509 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3510 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3511 | the frame ID. */ | |
d0a55772 | 3512 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3513 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3514 | } |
3515 | ||
3516 | if (b->cond) | |
3517 | { | |
3518 | annotate_field (7); | |
8b93c638 JM |
3519 | ui_out_text (uiout, "\tstop only if "); |
3520 | print_expression (b->cond, stb->stream); | |
3521 | ui_out_field_stream (uiout, "cond", stb); | |
3522 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3523 | } |
0101ce28 JJ |
3524 | |
3525 | if (b->pending && b->cond_string) | |
3526 | { | |
3527 | annotate_field (7); | |
3528 | ui_out_text (uiout, "\tstop only if "); | |
3529 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3530 | ui_out_text (uiout, "\n"); | |
3531 | } | |
3532 | ||
c4093a6a JM |
3533 | if (b->thread != -1) |
3534 | { | |
3535 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3536 | ui_out_text (uiout, "\tstop only in thread "); |
3537 | ui_out_field_int (uiout, "thread", b->thread); | |
3538 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3539 | } |
3540 | ||
3541 | if (show_breakpoint_hit_counts && b->hit_count) | |
3542 | { | |
3543 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3544 | if (ep_is_catchpoint (b)) |
3545 | ui_out_text (uiout, "\tcatchpoint"); | |
3546 | else | |
3547 | ui_out_text (uiout, "\tbreakpoint"); | |
3548 | ui_out_text (uiout, " already hit "); | |
3549 | ui_out_field_int (uiout, "times", b->hit_count); | |
3550 | if (b->hit_count == 1) | |
3551 | ui_out_text (uiout, " time\n"); | |
3552 | else | |
3553 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3554 | } |
3555 | ||
fb40c209 AC |
3556 | /* Output the count also if it is zero, but only if this is |
3557 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3558 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3559 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3560 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3561 | |
c4093a6a JM |
3562 | if (b->ignore_count) |
3563 | { | |
3564 | annotate_field (8); | |
8b93c638 JM |
3565 | ui_out_text (uiout, "\tignore next "); |
3566 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3567 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3568 | } |
3569 | ||
3570 | if ((l = b->commands)) | |
3571 | { | |
3b31d625 EZ |
3572 | struct cleanup *script_chain; |
3573 | ||
c4093a6a | 3574 | annotate_field (9); |
3b31d625 | 3575 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3576 | print_command_lines (uiout, l, 4); |
3b31d625 | 3577 | do_cleanups (script_chain); |
c4093a6a | 3578 | } |
3b31d625 | 3579 | do_cleanups (bkpt_chain); |
8b93c638 | 3580 | do_cleanups (old_chain); |
c4093a6a | 3581 | } |
c5aa993b | 3582 | |
c4093a6a JM |
3583 | struct captured_breakpoint_query_args |
3584 | { | |
3585 | int bnum; | |
3586 | }; | |
c5aa993b | 3587 | |
c4093a6a | 3588 | static int |
2b65245e | 3589 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3590 | { |
3591 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3592 | struct breakpoint *b; |
c4093a6a JM |
3593 | CORE_ADDR dummy_addr = 0; |
3594 | ALL_BREAKPOINTS (b) | |
3595 | { | |
3596 | if (args->bnum == b->number) | |
c5aa993b | 3597 | { |
c4093a6a JM |
3598 | print_one_breakpoint (b, &dummy_addr); |
3599 | return GDB_RC_OK; | |
c5aa993b | 3600 | } |
c4093a6a JM |
3601 | } |
3602 | return GDB_RC_NONE; | |
3603 | } | |
c5aa993b | 3604 | |
c4093a6a | 3605 | enum gdb_rc |
2b65245e | 3606 | gdb_breakpoint_query (struct ui_out *uiout, int bnum) |
c4093a6a JM |
3607 | { |
3608 | struct captured_breakpoint_query_args args; | |
3609 | args.bnum = bnum; | |
3610 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3611 | an error. */ | |
2b65245e AC |
3612 | return catch_exceptions (uiout, do_captured_breakpoint_query, &args, |
3613 | NULL, RETURN_MASK_ALL); | |
c4093a6a | 3614 | } |
c5aa993b | 3615 | |
7f3b0473 AC |
3616 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3617 | catchpoints, et.al.). */ | |
3618 | ||
3619 | static int | |
3620 | user_settable_breakpoint (const struct breakpoint *b) | |
3621 | { | |
3622 | return (b->type == bp_breakpoint | |
3623 | || b->type == bp_catch_load | |
3624 | || b->type == bp_catch_unload | |
3625 | || b->type == bp_catch_fork | |
3626 | || b->type == bp_catch_vfork | |
3627 | || b->type == bp_catch_exec | |
3628 | || b->type == bp_catch_catch | |
3629 | || b->type == bp_catch_throw | |
3630 | || b->type == bp_hardware_breakpoint | |
3631 | || b->type == bp_watchpoint | |
3632 | || b->type == bp_read_watchpoint | |
3633 | || b->type == bp_access_watchpoint | |
3634 | || b->type == bp_hardware_watchpoint); | |
3635 | } | |
3636 | ||
3637 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3638 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3639 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3640 | |
c4093a6a | 3641 | static void |
fba45db2 | 3642 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3643 | { |
52f0bd74 | 3644 | struct breakpoint *b; |
c4093a6a | 3645 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3646 | int nr_printable_breakpoints; |
3b31d625 | 3647 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3648 | |
7f3b0473 AC |
3649 | /* Compute the number of rows in the table. */ |
3650 | nr_printable_breakpoints = 0; | |
3651 | ALL_BREAKPOINTS (b) | |
3652 | if (bnum == -1 | |
3653 | || bnum == b->number) | |
3654 | { | |
3655 | if (allflag || user_settable_breakpoint (b)) | |
3656 | nr_printable_breakpoints++; | |
3657 | } | |
3658 | ||
8b93c638 | 3659 | if (addressprint) |
3b31d625 EZ |
3660 | bkpttbl_chain |
3661 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3662 | "BreakpointTable"); | |
8b93c638 | 3663 | else |
3b31d625 EZ |
3664 | bkpttbl_chain |
3665 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3666 | "BreakpointTable"); | |
8b93c638 | 3667 | |
7f3b0473 | 3668 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3669 | annotate_breakpoints_headers (); |
3670 | if (nr_printable_breakpoints > 0) | |
3671 | annotate_field (0); | |
3672 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3673 | if (nr_printable_breakpoints > 0) | |
3674 | annotate_field (1); | |
3675 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3676 | if (nr_printable_breakpoints > 0) | |
3677 | annotate_field (2); | |
3678 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3679 | if (nr_printable_breakpoints > 0) | |
3680 | annotate_field (3); | |
3681 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3682 | if (addressprint) | |
7f3b0473 | 3683 | { |
d7faa9e7 AC |
3684 | if (nr_printable_breakpoints > 0) |
3685 | annotate_field (4); | |
7f3b0473 | 3686 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3687 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3688 | else |
b25959ec | 3689 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3690 | } |
d7faa9e7 AC |
3691 | if (nr_printable_breakpoints > 0) |
3692 | annotate_field (5); | |
3693 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3694 | ui_out_table_body (uiout); | |
3695 | if (nr_printable_breakpoints > 0) | |
3696 | annotate_breakpoints_table (); | |
7f3b0473 | 3697 | |
c4093a6a JM |
3698 | ALL_BREAKPOINTS (b) |
3699 | if (bnum == -1 | |
3700 | || bnum == b->number) | |
3701 | { | |
3702 | /* We only print out user settable breakpoints unless the | |
3703 | allflag is set. */ | |
7f3b0473 AC |
3704 | if (allflag || user_settable_breakpoint (b)) |
3705 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3706 | } |
3707 | ||
3b31d625 | 3708 | do_cleanups (bkpttbl_chain); |
698384cd | 3709 | |
7f3b0473 | 3710 | if (nr_printable_breakpoints == 0) |
c906108c | 3711 | { |
8b93c638 JM |
3712 | if (bnum == -1) |
3713 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3714 | else | |
3715 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3716 | bnum); | |
c906108c SS |
3717 | } |
3718 | else | |
c4093a6a JM |
3719 | { |
3720 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3721 | that a comparison of an unsigned with -1 is always false. */ | |
3722 | if (last_addr != (CORE_ADDR) -1) | |
3723 | set_next_address (last_addr); | |
3724 | } | |
c906108c | 3725 | |
c4093a6a JM |
3726 | /* FIXME? Should this be moved up so that it is only called when |
3727 | there have been breakpoints? */ | |
c906108c SS |
3728 | annotate_breakpoints_table_end (); |
3729 | } | |
3730 | ||
c906108c | 3731 | static void |
fba45db2 | 3732 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3733 | { |
3734 | int bnum = -1; | |
3735 | ||
3736 | if (bnum_exp) | |
bb518678 | 3737 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3738 | |
3739 | breakpoint_1 (bnum, 0); | |
3740 | } | |
3741 | ||
7a292a7a | 3742 | static void |
fba45db2 | 3743 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3744 | { |
3745 | int bnum = -1; | |
3746 | ||
3747 | if (bnum_exp) | |
bb518678 | 3748 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3749 | |
3750 | breakpoint_1 (bnum, 1); | |
3751 | } | |
3752 | ||
c906108c SS |
3753 | /* Print a message describing any breakpoints set at PC. */ |
3754 | ||
3755 | static void | |
fba45db2 | 3756 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c | 3757 | { |
52f0bd74 AC |
3758 | int others = 0; |
3759 | struct breakpoint *b; | |
c906108c SS |
3760 | |
3761 | ALL_BREAKPOINTS (b) | |
5cab636d | 3762 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3763 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3764 | others++; |
c906108c SS |
3765 | if (others > 0) |
3766 | { | |
3767 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3768 | ALL_BREAKPOINTS (b) | |
5cab636d | 3769 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3770 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3771 | { |
3772 | others--; | |
3773 | printf_filtered ("%d%s%s ", | |
3774 | b->number, | |
3775 | ((b->enable_state == bp_disabled || | |
3776 | b->enable_state == bp_shlib_disabled || | |
3777 | b->enable_state == bp_call_disabled) | |
3778 | ? " (disabled)" | |
3779 | : b->enable_state == bp_permanent | |
3780 | ? " (permanent)" | |
3781 | : ""), | |
3782 | (others > 1) ? "," | |
3783 | : ((others == 1) ? " and" : "")); | |
3784 | } | |
c906108c SS |
3785 | printf_filtered ("also set at pc "); |
3786 | print_address_numeric (pc, 1, gdb_stdout); | |
3787 | printf_filtered (".\n"); | |
3788 | } | |
3789 | } | |
3790 | \f | |
3791 | /* Set the default place to put a breakpoint | |
3792 | for the `break' command with no arguments. */ | |
3793 | ||
3794 | void | |
fba45db2 KB |
3795 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3796 | int line) | |
c906108c SS |
3797 | { |
3798 | default_breakpoint_valid = valid; | |
3799 | default_breakpoint_address = addr; | |
3800 | default_breakpoint_symtab = symtab; | |
3801 | default_breakpoint_line = line; | |
3802 | } | |
3803 | ||
e4f237da KB |
3804 | /* Return true iff it is meaningful to use the address member of |
3805 | BPT. For some breakpoint types, the address member is irrelevant | |
3806 | and it makes no sense to attempt to compare it to other addresses | |
3807 | (or use it for any other purpose either). | |
3808 | ||
3809 | More specifically, each of the following breakpoint types will always | |
3810 | have a zero valued address and we don't want check_duplicates() to mark | |
3811 | breakpoints of any of these types to be a duplicate of an actual | |
3812 | breakpoint at address zero: | |
3813 | ||
3814 | bp_watchpoint | |
3815 | bp_hardware_watchpoint | |
3816 | bp_read_watchpoint | |
3817 | bp_access_watchpoint | |
3818 | bp_catch_exec | |
3819 | bp_longjmp_resume | |
3820 | bp_catch_fork | |
3821 | bp_catch_vork */ | |
3822 | ||
3823 | static int | |
3824 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3825 | { | |
3826 | enum bptype type = bpt->type; | |
3827 | ||
3828 | return (type != bp_watchpoint | |
3829 | && type != bp_hardware_watchpoint | |
3830 | && type != bp_read_watchpoint | |
3831 | && type != bp_access_watchpoint | |
3832 | && type != bp_catch_exec | |
3833 | && type != bp_longjmp_resume | |
3834 | && type != bp_catch_fork | |
3835 | && type != bp_catch_vfork); | |
3836 | } | |
3837 | ||
9f60f21b | 3838 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3839 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3840 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3841 | If we have a permanent breakpoint at the same place as BPT, make |
3842 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3843 | |
3844 | static void | |
9f60f21b | 3845 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3846 | { |
075f6582 | 3847 | struct bp_location *b; |
52f0bd74 | 3848 | int count = 0; |
075f6582 | 3849 | struct bp_location *perm_bp = 0; |
5cab636d | 3850 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3851 | asection *section = bpt->loc->section; |
c906108c | 3852 | |
e4f237da | 3853 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3854 | return; |
3855 | ||
075f6582 DJ |
3856 | ALL_BP_LOCATIONS (b) |
3857 | if (b->owner->enable_state != bp_disabled | |
3858 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3859 | && !b->owner->pending |
075f6582 DJ |
3860 | && b->owner->enable_state != bp_call_disabled |
3861 | && b->address == address /* address / overlay match */ | |
3862 | && (!overlay_debugging || b->section == section) | |
3863 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3864 | { |
c2c6d25f | 3865 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3866 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3867 | { |
3868 | perm_bp = b; | |
3869 | break; | |
3870 | } | |
3871 | ||
c5aa993b | 3872 | count++; |
075f6582 | 3873 | b->duplicate = count > 1; |
c5aa993b | 3874 | } |
c2c6d25f JM |
3875 | |
3876 | /* If we found a permanent breakpoint at this address, go over the | |
3877 | list again and declare all the other breakpoints there to be the | |
3878 | duplicates. */ | |
3879 | if (perm_bp) | |
3880 | { | |
075f6582 | 3881 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3882 | |
3883 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3884 | if (! perm_bp->inserted) |
8e65ff28 AC |
3885 | internal_error (__FILE__, __LINE__, |
3886 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3887 | "actually inserted"); |
3888 | ||
075f6582 | 3889 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3890 | if (b != perm_bp) |
3891 | { | |
075f6582 DJ |
3892 | if (b->owner->enable_state != bp_disabled |
3893 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3894 | && !b->owner->pending |
075f6582 DJ |
3895 | && b->owner->enable_state != bp_call_disabled |
3896 | && b->address == address /* address / overlay match */ | |
3897 | && (!overlay_debugging || b->section == section) | |
3898 | && breakpoint_address_is_meaningful (b->owner)) | |
3899 | { | |
3900 | if (b->inserted) | |
3901 | internal_error (__FILE__, __LINE__, | |
3902 | "another breakpoint was inserted on top of " | |
3903 | "a permanent breakpoint"); | |
3904 | ||
3905 | b->duplicate = 1; | |
3906 | } | |
c2c6d25f JM |
3907 | } |
3908 | } | |
c906108c SS |
3909 | } |
3910 | ||
76897487 KB |
3911 | static void |
3912 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3913 | int bnum, int have_bnum) | |
3914 | { | |
3915 | char astr1[40]; | |
3916 | char astr2[40]; | |
3917 | ||
bb599908 PH |
3918 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
3919 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 KB |
3920 | if (have_bnum) |
3921 | warning ("Breakpoint %d address previously adjusted from %s to %s.", | |
3922 | bnum, astr1, astr2); | |
3923 | else | |
3924 | warning ("Breakpoint address adjusted from %s to %s.", astr1, astr2); | |
3925 | } | |
3926 | ||
3927 | /* Adjust a breakpoint's address to account for architectural constraints | |
3928 | on breakpoint placement. Return the adjusted address. Note: Very | |
3929 | few targets require this kind of adjustment. For most targets, | |
3930 | this function is simply the identity function. */ | |
3931 | ||
3932 | static CORE_ADDR | |
88f7da05 | 3933 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
3934 | { |
3935 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
3936 | { | |
3937 | /* Very few targets need any kind of breakpoint adjustment. */ | |
3938 | return bpaddr; | |
3939 | } | |
88f7da05 KB |
3940 | else if (bptype == bp_watchpoint |
3941 | || bptype == bp_hardware_watchpoint | |
3942 | || bptype == bp_read_watchpoint | |
3943 | || bptype == bp_access_watchpoint | |
3944 | || bptype == bp_catch_fork | |
3945 | || bptype == bp_catch_vfork | |
3946 | || bptype == bp_catch_exec) | |
3947 | { | |
3948 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
3949 | have their addresses modified. */ | |
3950 | return bpaddr; | |
3951 | } | |
76897487 KB |
3952 | else |
3953 | { | |
3954 | CORE_ADDR adjusted_bpaddr; | |
3955 | ||
3956 | /* Some targets have architectural constraints on the placement | |
3957 | of breakpoint instructions. Obtain the adjusted address. */ | |
3958 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
3959 | bpaddr); | |
3960 | ||
3961 | /* An adjusted breakpoint address can significantly alter | |
3962 | a user's expectations. Print a warning if an adjustment | |
3963 | is required. */ | |
3964 | if (adjusted_bpaddr != bpaddr) | |
3965 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
3966 | ||
3967 | return adjusted_bpaddr; | |
3968 | } | |
3969 | } | |
3970 | ||
7cc221ef DJ |
3971 | /* Allocate a struct bp_location. */ |
3972 | ||
26bb91f3 | 3973 | static struct bp_location * |
e049a4b5 | 3974 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
3975 | { |
3976 | struct bp_location *loc, *loc_p; | |
3977 | ||
3978 | loc = xmalloc (sizeof (struct bp_location)); | |
3979 | memset (loc, 0, sizeof (*loc)); | |
3980 | ||
e049a4b5 DJ |
3981 | loc->owner = bpt; |
3982 | ||
3983 | switch (bp_type) | |
3984 | { | |
3985 | case bp_breakpoint: | |
3986 | case bp_until: | |
3987 | case bp_finish: | |
3988 | case bp_longjmp: | |
3989 | case bp_longjmp_resume: | |
3990 | case bp_step_resume: | |
3991 | case bp_through_sigtramp: | |
3992 | case bp_watchpoint_scope: | |
3993 | case bp_call_dummy: | |
3994 | case bp_shlib_event: | |
3995 | case bp_thread_event: | |
3996 | case bp_overlay_event: | |
3997 | case bp_catch_load: | |
3998 | case bp_catch_unload: | |
3999 | loc->loc_type = bp_loc_software_breakpoint; | |
4000 | break; | |
4001 | case bp_hardware_breakpoint: | |
4002 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4003 | break; | |
4004 | case bp_hardware_watchpoint: | |
4005 | case bp_read_watchpoint: | |
4006 | case bp_access_watchpoint: | |
4007 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4008 | break; | |
4009 | case bp_watchpoint: | |
4010 | case bp_catch_fork: | |
4011 | case bp_catch_vfork: | |
4012 | case bp_catch_exec: | |
4013 | case bp_catch_catch: | |
4014 | case bp_catch_throw: | |
4015 | loc->loc_type = bp_loc_other; | |
4016 | break; | |
4017 | default: | |
4018 | internal_error (__FILE__, __LINE__, "unknown breakpoint type"); | |
4019 | } | |
4020 | ||
7cc221ef DJ |
4021 | /* Add this breakpoint to the end of the chain. */ |
4022 | ||
4023 | loc_p = bp_location_chain; | |
4024 | if (loc_p == 0) | |
4025 | bp_location_chain = loc; | |
4026 | else | |
4027 | { | |
4028 | while (loc_p->next) | |
4029 | loc_p = loc_p->next; | |
4030 | loc_p->next = loc; | |
4031 | } | |
4032 | ||
4033 | return loc; | |
4034 | } | |
4035 | ||
4d28f7a8 KB |
4036 | /* set_raw_breakpoint() is a low level routine for allocating and |
4037 | partially initializing a breakpoint of type BPTYPE. The newly | |
4038 | created breakpoint's address, section, source file name, and line | |
4039 | number are provided by SAL. The newly created and partially | |
4040 | initialized breakpoint is added to the breakpoint chain and | |
4041 | is also returned as the value of this function. | |
c906108c | 4042 | |
4d28f7a8 KB |
4043 | It is expected that the caller will complete the initialization of |
4044 | the newly created breakpoint struct as well as output any status | |
4045 | information regarding the creation of a new breakpoint. In | |
4046 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4047 | number! Care should be taken to not allow an error() to occur | |
4048 | prior to completing the initialization of the breakpoint. If this | |
4049 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4050 | |
4051 | struct breakpoint * | |
4d28f7a8 | 4052 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4053 | { |
52f0bd74 | 4054 | struct breakpoint *b, *b1; |
c906108c SS |
4055 | |
4056 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4057 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4058 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4059 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4060 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4061 | bptype); | |
c906108c SS |
4062 | if (sal.symtab == NULL) |
4063 | b->source_file = NULL; | |
4064 | else | |
4065 | b->source_file = savestring (sal.symtab->filename, | |
4066 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4067 | b->loc->section = sal.section; |
4d28f7a8 | 4068 | b->type = bptype; |
c906108c SS |
4069 | b->language = current_language->la_language; |
4070 | b->input_radix = input_radix; | |
4071 | b->thread = -1; | |
4072 | b->line_number = sal.line; | |
b5de0fa7 | 4073 | b->enable_state = bp_enabled; |
c906108c SS |
4074 | b->next = 0; |
4075 | b->silent = 0; | |
4076 | b->ignore_count = 0; | |
4077 | b->commands = NULL; | |
818dd999 | 4078 | b->frame_id = null_frame_id; |
c906108c SS |
4079 | b->dll_pathname = NULL; |
4080 | b->triggered_dll_pathname = NULL; | |
4081 | b->forked_inferior_pid = 0; | |
4082 | b->exec_pathname = NULL; | |
3086aeae | 4083 | b->ops = NULL; |
0101ce28 | 4084 | b->pending = 0; |
c906108c SS |
4085 | |
4086 | /* Add this breakpoint to the end of the chain | |
4087 | so that a list of breakpoints will come out in order | |
4088 | of increasing numbers. */ | |
4089 | ||
4090 | b1 = breakpoint_chain; | |
4091 | if (b1 == 0) | |
4092 | breakpoint_chain = b; | |
4093 | else | |
4094 | { | |
4095 | while (b1->next) | |
4096 | b1 = b1->next; | |
4097 | b1->next = b; | |
4098 | } | |
4099 | ||
9f60f21b | 4100 | check_duplicates (b); |
c906108c SS |
4101 | breakpoints_changed (); |
4102 | ||
4103 | return b; | |
4104 | } | |
4105 | ||
c2c6d25f JM |
4106 | |
4107 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4108 | instruction, hard-wired into the inferior's code. */ | |
4109 | void | |
4110 | make_breakpoint_permanent (struct breakpoint *b) | |
4111 | { | |
b5de0fa7 | 4112 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4113 | |
4114 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4115 | b->loc->inserted = 1; |
c2c6d25f JM |
4116 | } |
4117 | ||
1900040c MS |
4118 | static struct breakpoint * |
4119 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4120 | { | |
4121 | static int internal_breakpoint_number = -1; | |
4122 | struct symtab_and_line sal; | |
4123 | struct breakpoint *b; | |
4124 | ||
fe39c653 | 4125 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4126 | |
4127 | sal.pc = address; | |
4128 | sal.section = find_pc_overlay (sal.pc); | |
4129 | ||
4130 | b = set_raw_breakpoint (sal, type); | |
4131 | b->number = internal_breakpoint_number--; | |
4132 | b->disposition = disp_donttouch; | |
4133 | ||
4134 | return b; | |
4135 | } | |
4136 | ||
c906108c SS |
4137 | |
4138 | static void | |
fba45db2 | 4139 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4140 | { |
c906108c | 4141 | struct breakpoint *b; |
1900040c | 4142 | struct minimal_symbol *m; |
c906108c | 4143 | |
1900040c MS |
4144 | if (func_name == NULL) |
4145 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4146 | else | |
c906108c | 4147 | { |
5520a790 | 4148 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4149 | return; |
1900040c MS |
4150 | |
4151 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4152 | } |
c906108c | 4153 | |
b5de0fa7 | 4154 | b->enable_state = bp_disabled; |
c906108c SS |
4155 | b->silent = 1; |
4156 | if (func_name) | |
4fcf66da | 4157 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4158 | } |
4159 | ||
53a5351d JM |
4160 | /* Call this routine when stepping and nexting to enable a breakpoint |
4161 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4162 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4163 | ||
4164 | void | |
fba45db2 | 4165 | enable_longjmp_breakpoint (void) |
c906108c | 4166 | { |
52f0bd74 | 4167 | struct breakpoint *b; |
c906108c SS |
4168 | |
4169 | ALL_BREAKPOINTS (b) | |
4170 | if (b->type == bp_longjmp) | |
c5aa993b | 4171 | { |
b5de0fa7 | 4172 | b->enable_state = bp_enabled; |
9f60f21b | 4173 | check_duplicates (b); |
c5aa993b | 4174 | } |
c906108c SS |
4175 | } |
4176 | ||
4177 | void | |
fba45db2 | 4178 | disable_longjmp_breakpoint (void) |
c906108c | 4179 | { |
52f0bd74 | 4180 | struct breakpoint *b; |
c906108c SS |
4181 | |
4182 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4183 | if (b->type == bp_longjmp |
c906108c | 4184 | || b->type == bp_longjmp_resume) |
c5aa993b | 4185 | { |
b5de0fa7 | 4186 | b->enable_state = bp_disabled; |
9f60f21b | 4187 | check_duplicates (b); |
c5aa993b | 4188 | } |
c906108c SS |
4189 | } |
4190 | ||
1900040c MS |
4191 | static void |
4192 | create_overlay_event_breakpoint (char *func_name) | |
4193 | { | |
4194 | struct breakpoint *b; | |
4195 | struct minimal_symbol *m; | |
4196 | ||
5520a790 | 4197 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4198 | return; |
4199 | ||
4200 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4201 | bp_overlay_event); | |
4202 | b->addr_string = xstrdup (func_name); | |
4203 | ||
4204 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4205 | { |
4206 | b->enable_state = bp_enabled; | |
4207 | overlay_events_enabled = 1; | |
4208 | } | |
1900040c | 4209 | else |
c02f5703 MS |
4210 | { |
4211 | b->enable_state = bp_disabled; | |
4212 | overlay_events_enabled = 0; | |
4213 | } | |
1900040c MS |
4214 | } |
4215 | ||
4216 | void | |
4217 | enable_overlay_breakpoints (void) | |
4218 | { | |
52f0bd74 | 4219 | struct breakpoint *b; |
1900040c MS |
4220 | |
4221 | ALL_BREAKPOINTS (b) | |
4222 | if (b->type == bp_overlay_event) | |
4223 | { | |
4224 | b->enable_state = bp_enabled; | |
4225 | check_duplicates (b); | |
c02f5703 | 4226 | overlay_events_enabled = 1; |
1900040c MS |
4227 | } |
4228 | } | |
4229 | ||
4230 | void | |
4231 | disable_overlay_breakpoints (void) | |
4232 | { | |
52f0bd74 | 4233 | struct breakpoint *b; |
1900040c MS |
4234 | |
4235 | ALL_BREAKPOINTS (b) | |
4236 | if (b->type == bp_overlay_event) | |
4237 | { | |
4238 | b->enable_state = bp_disabled; | |
4239 | check_duplicates (b); | |
c02f5703 | 4240 | overlay_events_enabled = 0; |
1900040c MS |
4241 | } |
4242 | } | |
4243 | ||
c4093a6a | 4244 | struct breakpoint * |
fba45db2 | 4245 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4246 | { |
4247 | struct breakpoint *b; | |
c4093a6a | 4248 | |
1900040c | 4249 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4250 | |
b5de0fa7 | 4251 | b->enable_state = bp_enabled; |
c4093a6a | 4252 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4253 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4254 | |
4255 | return b; | |
4256 | } | |
4257 | ||
4258 | void | |
4259 | remove_thread_event_breakpoints (void) | |
4260 | { | |
4261 | struct breakpoint *b, *temp; | |
4262 | ||
4263 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4264 | if (b->type == bp_thread_event) | |
4265 | delete_breakpoint (b); | |
4266 | } | |
4267 | ||
0101ce28 JJ |
4268 | struct captured_parse_breakpoint_args |
4269 | { | |
4270 | char **arg_p; | |
4271 | struct symtabs_and_lines *sals_p; | |
4272 | char ***addr_string_p; | |
4273 | int *not_found_ptr; | |
4274 | }; | |
4275 | ||
4276 | struct lang_and_radix | |
4277 | { | |
4278 | enum language lang; | |
4279 | int radix; | |
4280 | }; | |
4281 | ||
4282 | /* Cleanup helper routine to restore the current language and | |
4283 | input radix. */ | |
4284 | static void | |
4285 | do_restore_lang_radix_cleanup (void *old) | |
4286 | { | |
4287 | struct lang_and_radix *p = old; | |
4288 | set_language (p->lang); | |
4289 | input_radix = p->radix; | |
4290 | } | |
4291 | ||
4292 | /* Try and resolve a pending breakpoint. */ | |
4293 | static int | |
4294 | resolve_pending_breakpoint (struct breakpoint *b) | |
4295 | { | |
4296 | /* Try and reparse the breakpoint in case the shared library | |
4297 | is now loaded. */ | |
4298 | struct symtabs_and_lines sals; | |
4299 | struct symtab_and_line pending_sal; | |
4300 | char **cond_string = (char **) NULL; | |
4301 | char *copy_arg = b->addr_string; | |
4302 | char **addr_string; | |
4303 | char *errmsg; | |
4304 | int rc; | |
4305 | int not_found = 0; | |
4306 | struct ui_file *old_gdb_stderr; | |
4307 | struct lang_and_radix old_lr; | |
4308 | struct cleanup *old_chain; | |
4309 | ||
4310 | /* Set language, input-radix, then reissue breakpoint command. | |
4311 | Ensure the language and input-radix are restored afterwards. */ | |
4312 | old_lr.lang = current_language->la_language; | |
4313 | old_lr.radix = input_radix; | |
4314 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4315 | ||
4316 | set_language (b->language); | |
4317 | input_radix = b->input_radix; | |
4318 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4319 | ||
4320 | if (rc == GDB_RC_OK) | |
4321 | /* Pending breakpoint has been resolved. */ | |
4322 | printf_filtered ("Pending breakpoint \"%s\" resolved\n", b->addr_string); | |
4323 | ||
4324 | do_cleanups (old_chain); | |
4325 | return rc; | |
4326 | } | |
4327 | ||
cae688ec JJ |
4328 | #ifdef SOLIB_ADD |
4329 | void | |
4330 | remove_solib_event_breakpoints (void) | |
4331 | { | |
4332 | struct breakpoint *b, *temp; | |
4333 | ||
4334 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4335 | if (b->type == bp_shlib_event) | |
4336 | delete_breakpoint (b); | |
4337 | } | |
4338 | ||
4339 | struct breakpoint * | |
4340 | create_solib_event_breakpoint (CORE_ADDR address) | |
4341 | { | |
4342 | struct breakpoint *b; | |
4343 | ||
4344 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4345 | return b; | |
4346 | } | |
4347 | ||
4348 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4349 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4350 | ||
4351 | void | |
4352 | disable_breakpoints_in_shlibs (int silent) | |
4353 | { | |
4354 | struct breakpoint *b; | |
4355 | int disabled_shlib_breaks = 0; | |
4356 | ||
4357 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4358 | ALL_BREAKPOINTS (b) | |
4359 | { | |
4360 | #if defined (PC_SOLIB) | |
4361 | if (((b->type == bp_breakpoint) || | |
4362 | (b->type == bp_hardware_breakpoint)) && | |
4363 | breakpoint_enabled (b) && | |
4364 | !b->loc->duplicate && | |
4365 | PC_SOLIB (b->loc->address)) | |
4366 | { | |
4367 | b->enable_state = bp_shlib_disabled; | |
4368 | if (!silent) | |
4369 | { | |
4370 | if (!disabled_shlib_breaks) | |
4371 | { | |
4372 | target_terminal_ours_for_output (); | |
4373 | warning ("Temporarily disabling shared library breakpoints:"); | |
4374 | } | |
4375 | disabled_shlib_breaks = 1; | |
4376 | warning ("breakpoint #%d ", b->number); | |
4377 | } | |
4378 | } | |
4379 | #endif | |
4380 | } | |
4381 | } | |
4382 | ||
84acb35a JJ |
4383 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4384 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4385 | ||
4386 | void | |
4387 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4388 | { | |
4389 | struct breakpoint *b; | |
4390 | int disabled_shlib_breaks = 0; | |
4391 | ||
4392 | #if defined (PC_SOLIB) | |
4393 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4394 | ALL_BREAKPOINTS (b) | |
4395 | { | |
4396 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4397 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
4398 | && breakpoint_enabled (b) | |
4399 | && !b->loc->duplicate) | |
4400 | { | |
4401 | char *so_name = PC_SOLIB (b->loc->address); | |
4402 | if (so_name | |
4403 | && !strcmp (so_name, solib->so_name)) | |
4404 | { | |
4405 | b->enable_state = bp_shlib_disabled; | |
4406 | /* At this point, we cannot rely on remove_breakpoint | |
4407 | succeeding so we must mark the breakpoint as not inserted | |
4408 | to prevent future errors occurring in remove_breakpoints. */ | |
4409 | b->loc->inserted = 0; | |
4410 | if (!disabled_shlib_breaks) | |
4411 | { | |
4412 | target_terminal_ours_for_output (); | |
4413 | warning ("Temporarily disabling breakpoints for unloaded shared library \"%s\"", | |
4414 | so_name); | |
4415 | } | |
4416 | disabled_shlib_breaks = 1; | |
4417 | } | |
4418 | } | |
4419 | } | |
4420 | #endif | |
4421 | } | |
4422 | ||
c906108c SS |
4423 | /* Try to reenable any breakpoints in shared libraries. */ |
4424 | void | |
fba45db2 | 4425 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4426 | { |
0101ce28 | 4427 | struct breakpoint *b, *tmp; |
c906108c | 4428 | |
0101ce28 JJ |
4429 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4430 | { | |
b5de0fa7 | 4431 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 JJ |
4432 | { |
4433 | char buf[1], *lib; | |
4434 | ||
4435 | /* Do not reenable the breakpoint if the shared library | |
4436 | is still not mapped in. */ | |
4437 | lib = PC_SOLIB (b->loc->address); | |
4438 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) | |
4439 | b->enable_state = bp_enabled; | |
4440 | } | |
4441 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4442 | { | |
4443 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4444 | delete_breakpoint (b); | |
4445 | } | |
4446 | } | |
c906108c SS |
4447 | } |
4448 | ||
4449 | #endif | |
4450 | ||
4451 | static void | |
fba45db2 KB |
4452 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4453 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4454 | { |
c5aa993b | 4455 | struct breakpoint *b; |
c906108c | 4456 | struct symtabs_and_lines sals; |
c5aa993b JM |
4457 | struct cleanup *old_chain; |
4458 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4459 | char *addr_start = hookname; |
4460 | char *addr_end = NULL; | |
4461 | char **canonical = (char **) NULL; | |
4462 | int thread = -1; /* All threads. */ | |
4463 | ||
c906108c | 4464 | /* Set a breakpoint on the specified hook. */ |
68219205 | 4465 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical, NULL); |
c906108c | 4466 | addr_end = hookname; |
c5aa993b | 4467 | |
c906108c SS |
4468 | if (sals.nelts == 0) |
4469 | { | |
4470 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4471 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4472 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4473 | return; | |
4474 | } | |
4475 | if (sals.nelts != 1) | |
4476 | { | |
53a5351d | 4477 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4478 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4479 | return; | |
4480 | } | |
4481 | ||
53a5351d JM |
4482 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4483 | in case the following errors out. */ | |
b8c9b27d | 4484 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4485 | if (canonical != (char **) NULL) |
c906108c | 4486 | { |
b8c9b27d | 4487 | make_cleanup (xfree, canonical); |
c906108c SS |
4488 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4489 | if (canonical[0] != NULL) | |
b8c9b27d | 4490 | make_cleanup (xfree, canonical[0]); |
c906108c | 4491 | } |
c5aa993b | 4492 | |
c906108c | 4493 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4494 | |
c906108c | 4495 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4496 | if (canonical != (char **) NULL) |
c906108c | 4497 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4498 | |
4d28f7a8 | 4499 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4500 | set_breakpoint_count (breakpoint_count + 1); |
4501 | b->number = breakpoint_count; | |
4502 | b->cond = NULL; | |
53a5351d JM |
4503 | b->cond_string = (cond_string == NULL) ? |
4504 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4505 | b->thread = thread; |
c5aa993b JM |
4506 | |
4507 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4508 | b->addr_string = canonical[0]; |
4509 | else if (addr_start) | |
4510 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4511 | |
b5de0fa7 EZ |
4512 | b->enable_state = bp_enabled; |
4513 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4514 | |
c906108c SS |
4515 | if (dll_pathname == NULL) |
4516 | b->dll_pathname = NULL; | |
4517 | else | |
4518 | { | |
4519 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4520 | strcpy (b->dll_pathname, dll_pathname); | |
4521 | } | |
c5aa993b | 4522 | |
c906108c SS |
4523 | mention (b); |
4524 | do_cleanups (old_chain); | |
4525 | } | |
4526 | ||
4527 | void | |
fba45db2 KB |
4528 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4529 | char *dll_pathname, char *cond_string) | |
c906108c | 4530 | { |
53a5351d JM |
4531 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4532 | cond_string, bp_catch_load); | |
c906108c SS |
4533 | } |
4534 | ||
4535 | void | |
fba45db2 KB |
4536 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4537 | char *dll_pathname, char *cond_string) | |
c906108c | 4538 | { |
53a5351d JM |
4539 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4540 | cond_string, bp_catch_unload); | |
c906108c SS |
4541 | } |
4542 | ||
4543 | static void | |
fba45db2 KB |
4544 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4545 | enum bptype bp_kind) | |
c906108c | 4546 | { |
c5aa993b JM |
4547 | struct symtab_and_line sal; |
4548 | struct breakpoint *b; | |
4549 | int thread = -1; /* All threads. */ | |
4550 | ||
fe39c653 | 4551 | init_sal (&sal); |
c906108c SS |
4552 | sal.pc = 0; |
4553 | sal.symtab = NULL; | |
4554 | sal.line = 0; | |
c5aa993b | 4555 | |
4d28f7a8 | 4556 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4557 | set_breakpoint_count (breakpoint_count + 1); |
4558 | b->number = breakpoint_count; | |
4559 | b->cond = NULL; | |
53a5351d JM |
4560 | b->cond_string = (cond_string == NULL) ? |
4561 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4562 | b->thread = thread; |
4563 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4564 | b->enable_state = bp_enabled; |
4565 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4566 | b->forked_inferior_pid = 0; |
c5aa993b | 4567 | |
c906108c SS |
4568 | mention (b); |
4569 | } | |
4570 | ||
4571 | void | |
fba45db2 | 4572 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4573 | { |
4574 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4575 | } | |
c5aa993b | 4576 | |
c906108c | 4577 | void |
fba45db2 | 4578 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4579 | { |
4580 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4581 | } | |
4582 | ||
4583 | void | |
fba45db2 | 4584 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4585 | { |
c5aa993b JM |
4586 | struct symtab_and_line sal; |
4587 | struct breakpoint *b; | |
4588 | int thread = -1; /* All threads. */ | |
c906108c | 4589 | |
fe39c653 | 4590 | init_sal (&sal); |
c906108c SS |
4591 | sal.pc = 0; |
4592 | sal.symtab = NULL; | |
4593 | sal.line = 0; | |
4594 | ||
4d28f7a8 | 4595 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4596 | set_breakpoint_count (breakpoint_count + 1); |
4597 | b->number = breakpoint_count; | |
4598 | b->cond = NULL; | |
53a5351d JM |
4599 | b->cond_string = (cond_string == NULL) ? |
4600 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4601 | b->thread = thread; |
4602 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4603 | b->enable_state = bp_enabled; |
4604 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4605 | |
c906108c SS |
4606 | mention (b); |
4607 | } | |
4608 | ||
4609 | static int | |
fba45db2 | 4610 | hw_breakpoint_used_count (void) |
c906108c | 4611 | { |
52f0bd74 | 4612 | struct breakpoint *b; |
c906108c SS |
4613 | int i = 0; |
4614 | ||
4615 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4616 | { |
b5de0fa7 | 4617 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4618 | i++; |
4619 | } | |
c906108c SS |
4620 | |
4621 | return i; | |
4622 | } | |
4623 | ||
4624 | static int | |
fba45db2 | 4625 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4626 | { |
52f0bd74 | 4627 | struct breakpoint *b; |
c906108c SS |
4628 | int i = 0; |
4629 | ||
4630 | *other_type_used = 0; | |
4631 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4632 | { |
468d015d | 4633 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4634 | { |
4635 | if (b->type == type) | |
4636 | i++; | |
4637 | else if ((b->type == bp_hardware_watchpoint || | |
4638 | b->type == bp_read_watchpoint || | |
468d015d | 4639 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4640 | *other_type_used = 1; |
4641 | } | |
4642 | } | |
c906108c SS |
4643 | return i; |
4644 | } | |
4645 | ||
53a5351d JM |
4646 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4647 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4648 | |
53a5351d JM |
4649 | FIXME - This ought to be done by setting a temporary breakpoint |
4650 | that gets deleted automatically... */ | |
c906108c SS |
4651 | |
4652 | void | |
818dd999 | 4653 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4654 | { |
52f0bd74 | 4655 | struct breakpoint *b; |
c906108c SS |
4656 | |
4657 | ALL_BREAKPOINTS (b) | |
4658 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4659 | { |
5cab636d | 4660 | b->loc->requested_address = pc; |
88f7da05 KB |
4661 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4662 | b->type); | |
b5de0fa7 | 4663 | b->enable_state = bp_enabled; |
818dd999 | 4664 | b->frame_id = frame_id; |
9f60f21b | 4665 | check_duplicates (b); |
c5aa993b JM |
4666 | return; |
4667 | } | |
c906108c SS |
4668 | } |
4669 | ||
4670 | void | |
fba45db2 | 4671 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4672 | { |
c5aa993b | 4673 | struct breakpoint *b; |
c906108c SS |
4674 | |
4675 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4676 | { |
4677 | if (((b->type == bp_watchpoint) | |
4678 | || (b->type == bp_hardware_watchpoint) | |
4679 | || (b->type == bp_read_watchpoint) | |
4680 | || (b->type == bp_access_watchpoint) | |
4681 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4682 | && breakpoint_enabled (b)) |
c5aa993b | 4683 | { |
b5de0fa7 | 4684 | b->enable_state = bp_call_disabled; |
9f60f21b | 4685 | check_duplicates (b); |
c5aa993b JM |
4686 | } |
4687 | } | |
c906108c SS |
4688 | } |
4689 | ||
4690 | void | |
fba45db2 | 4691 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4692 | { |
c5aa993b | 4693 | struct breakpoint *b; |
c906108c SS |
4694 | |
4695 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4696 | { |
4697 | if (((b->type == bp_watchpoint) | |
4698 | || (b->type == bp_hardware_watchpoint) | |
4699 | || (b->type == bp_read_watchpoint) | |
4700 | || (b->type == bp_access_watchpoint) | |
4701 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4702 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4703 | { |
b5de0fa7 | 4704 | b->enable_state = bp_enabled; |
9f60f21b | 4705 | check_duplicates (b); |
c5aa993b JM |
4706 | } |
4707 | } | |
c906108c SS |
4708 | } |
4709 | ||
4710 | ||
4711 | /* Set a breakpoint that will evaporate an end of command | |
4712 | at address specified by SAL. | |
4713 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4714 | ||
4715 | struct breakpoint * | |
818dd999 | 4716 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4717 | enum bptype type) |
c906108c | 4718 | { |
52f0bd74 | 4719 | struct breakpoint *b; |
4d28f7a8 | 4720 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4721 | b->enable_state = bp_enabled; |
4722 | b->disposition = disp_donttouch; | |
818dd999 | 4723 | b->frame_id = frame_id; |
c906108c SS |
4724 | |
4725 | /* If we're debugging a multi-threaded program, then we | |
4726 | want momentary breakpoints to be active in only a | |
4727 | single thread of control. */ | |
39f77062 KB |
4728 | if (in_thread_list (inferior_ptid)) |
4729 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4730 | |
4731 | return b; | |
4732 | } | |
c906108c | 4733 | \f |
c5aa993b | 4734 | |
c906108c SS |
4735 | /* Tell the user we have just set a breakpoint B. */ |
4736 | ||
4737 | static void | |
fba45db2 | 4738 | mention (struct breakpoint *b) |
c906108c SS |
4739 | { |
4740 | int say_where = 0; | |
3b31d625 | 4741 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4742 | struct ui_stream *stb; |
4743 | ||
4744 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4745 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4746 | |
9a4105ab AC |
4747 | /* FIXME: This is misplaced; mention() is called by things (like |
4748 | hitting a watchpoint) other than breakpoint creation. It should | |
4749 | be possible to clean this up and at the same time replace the | |
4750 | random calls to breakpoint_changed with this hook, as has already | |
4751 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4752 | if (deprecated_create_breakpoint_hook) | |
4753 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4754 | breakpoint_create_event (b->number); |
c906108c | 4755 | |
3086aeae DJ |
4756 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4757 | b->ops->print_mention (b); | |
4758 | else | |
4759 | switch (b->type) | |
4760 | { | |
4761 | case bp_none: | |
4762 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4763 | break; | |
4764 | case bp_watchpoint: | |
4765 | ui_out_text (uiout, "Watchpoint "); | |
4766 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4767 | ui_out_field_int (uiout, "number", b->number); | |
4768 | ui_out_text (uiout, ": "); | |
4769 | print_expression (b->exp, stb->stream); | |
4770 | ui_out_field_stream (uiout, "exp", stb); | |
4771 | do_cleanups (ui_out_chain); | |
4772 | break; | |
4773 | case bp_hardware_watchpoint: | |
4774 | ui_out_text (uiout, "Hardware watchpoint "); | |
4775 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4776 | ui_out_field_int (uiout, "number", b->number); | |
4777 | ui_out_text (uiout, ": "); | |
4778 | print_expression (b->exp, stb->stream); | |
4779 | ui_out_field_stream (uiout, "exp", stb); | |
4780 | do_cleanups (ui_out_chain); | |
4781 | break; | |
4782 | case bp_read_watchpoint: | |
4783 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4784 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4785 | ui_out_field_int (uiout, "number", b->number); | |
4786 | ui_out_text (uiout, ": "); | |
4787 | print_expression (b->exp, stb->stream); | |
4788 | ui_out_field_stream (uiout, "exp", stb); | |
4789 | do_cleanups (ui_out_chain); | |
4790 | break; | |
4791 | case bp_access_watchpoint: | |
4792 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4793 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4794 | ui_out_field_int (uiout, "number", b->number); | |
4795 | ui_out_text (uiout, ": "); | |
4796 | print_expression (b->exp, stb->stream); | |
4797 | ui_out_field_stream (uiout, "exp", stb); | |
4798 | do_cleanups (ui_out_chain); | |
4799 | break; | |
4800 | case bp_breakpoint: | |
4801 | if (ui_out_is_mi_like_p (uiout)) | |
4802 | { | |
4803 | say_where = 0; | |
4804 | break; | |
4805 | } | |
4806 | printf_filtered ("Breakpoint %d", b->number); | |
4807 | say_where = 1; | |
4808 | break; | |
4809 | case bp_hardware_breakpoint: | |
4810 | if (ui_out_is_mi_like_p (uiout)) | |
4811 | { | |
4812 | say_where = 0; | |
4813 | break; | |
4814 | } | |
4815 | printf_filtered ("Hardware assisted breakpoint %d", b->number); | |
4816 | say_where = 1; | |
4817 | break; | |
4818 | case bp_catch_load: | |
4819 | case bp_catch_unload: | |
4820 | printf_filtered ("Catchpoint %d (%s %s)", | |
4821 | b->number, | |
4822 | (b->type == bp_catch_load) ? "load" : "unload", | |
4823 | (b->dll_pathname != NULL) ? | |
4824 | b->dll_pathname : "<any library>"); | |
4825 | break; | |
4826 | case bp_catch_fork: | |
4827 | case bp_catch_vfork: | |
4828 | printf_filtered ("Catchpoint %d (%s)", | |
4829 | b->number, | |
4830 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4831 | break; | |
4832 | case bp_catch_exec: | |
4833 | printf_filtered ("Catchpoint %d (exec)", | |
4834 | b->number); | |
4835 | break; | |
4836 | case bp_catch_catch: | |
4837 | case bp_catch_throw: | |
4838 | printf_filtered ("Catchpoint %d (%s)", | |
4839 | b->number, | |
4840 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4841 | break; | |
4842 | ||
4843 | case bp_until: | |
4844 | case bp_finish: | |
4845 | case bp_longjmp: | |
4846 | case bp_longjmp_resume: | |
4847 | case bp_step_resume: | |
4848 | case bp_through_sigtramp: | |
4849 | case bp_call_dummy: | |
4850 | case bp_watchpoint_scope: | |
4851 | case bp_shlib_event: | |
4852 | case bp_thread_event: | |
4853 | case bp_overlay_event: | |
4854 | break; | |
4855 | } | |
c906108c | 4856 | |
c906108c SS |
4857 | if (say_where) |
4858 | { | |
0101ce28 | 4859 | if (b->pending) |
c906108c | 4860 | { |
0101ce28 JJ |
4861 | printf_filtered (" (%s) pending.", b->addr_string); |
4862 | } | |
4863 | else | |
4864 | { | |
4865 | if (addressprint || b->source_file == NULL) | |
4866 | { | |
4867 | printf_filtered (" at "); | |
4868 | print_address_numeric (b->loc->address, 1, gdb_stdout); | |
4869 | } | |
4870 | if (b->source_file) | |
4871 | printf_filtered (": file %s, line %d.", | |
4872 | b->source_file, b->line_number); | |
c906108c | 4873 | } |
c906108c | 4874 | } |
8b93c638 | 4875 | do_cleanups (old_chain); |
9dc5e2a9 | 4876 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4877 | return; |
c906108c SS |
4878 | printf_filtered ("\n"); |
4879 | } | |
c906108c | 4880 | \f |
c5aa993b | 4881 | |
c3f6f71d JM |
4882 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4883 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4884 | COND[i] and COND_STRING[i] values. | |
4885 | ||
0101ce28 JJ |
4886 | The parameter PENDING_BP points to a pending breakpoint that is |
4887 | the basis of the breakpoints currently being created. The pending | |
4888 | breakpoint may contain a separate condition string or commands | |
4889 | that were added after the initial pending breakpoint was created. | |
4890 | ||
c3f6f71d JM |
4891 | NOTE: If the function succeeds, the caller is expected to cleanup |
4892 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4893 | array contents). If the function fails (error() is called), the | |
4894 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4895 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4896 | |
4897 | static void | |
c3f6f71d JM |
4898 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4899 | struct expression **cond, char **cond_string, | |
4900 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4901 | int thread, int ignore_count, int from_tty, |
4902 | struct breakpoint *pending_bp) | |
c906108c | 4903 | { |
c3f6f71d JM |
4904 | if (type == bp_hardware_breakpoint) |
4905 | { | |
4906 | int i = hw_breakpoint_used_count (); | |
4907 | int target_resources_ok = | |
4908 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4909 | i + sals.nelts, 0); | |
4910 | if (target_resources_ok == 0) | |
4911 | error ("No hardware breakpoint support in the target."); | |
4912 | else if (target_resources_ok < 0) | |
4913 | error ("Hardware breakpoints used exceeds limit."); | |
4914 | } | |
c906108c | 4915 | |
c3f6f71d JM |
4916 | /* Now set all the breakpoints. */ |
4917 | { | |
4918 | int i; | |
4919 | for (i = 0; i < sals.nelts; i++) | |
4920 | { | |
4921 | struct breakpoint *b; | |
4922 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4923 | |
c3f6f71d JM |
4924 | if (from_tty) |
4925 | describe_other_breakpoints (sal.pc, sal.section); | |
4926 | ||
4d28f7a8 | 4927 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4928 | set_breakpoint_count (breakpoint_count + 1); |
4929 | b->number = breakpoint_count; | |
c3f6f71d JM |
4930 | b->cond = cond[i]; |
4931 | b->thread = thread; | |
d8ef46f5 DJ |
4932 | if (addr_string[i]) |
4933 | b->addr_string = addr_string[i]; | |
4934 | else | |
4935 | /* addr_string has to be used or breakpoint_re_set will delete | |
4936 | me. */ | |
b435e160 | 4937 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
4938 | b->cond_string = cond_string[i]; |
4939 | b->ignore_count = ignore_count; | |
b5de0fa7 | 4940 | b->enable_state = bp_enabled; |
c3f6f71d | 4941 | b->disposition = disposition; |
0101ce28 JJ |
4942 | /* If resolving a pending breakpoint, a check must be made to see if |
4943 | the user has specified a new condition or commands for the | |
4944 | breakpoint. A new condition will override any condition that was | |
4945 | initially specified with the initial breakpoint command. */ | |
4946 | if (pending_bp) | |
4947 | { | |
4948 | char *arg; | |
4949 | if (pending_bp->cond_string) | |
4950 | { | |
4951 | arg = pending_bp->cond_string; | |
4952 | b->cond_string = savestring (arg, strlen (arg)); | |
4953 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
4954 | if (*arg) | |
4955 | error ("Junk at end of pending breakpoint condition expression"); | |
4956 | } | |
4957 | /* If there are commands associated with the breakpoint, they should | |
4958 | be copied too. */ | |
4959 | if (pending_bp->commands) | |
4960 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
4961 | |
4962 | /* We have to copy over the ignore_count and thread as well. */ | |
4963 | b->ignore_count = pending_bp->ignore_count; | |
4964 | b->thread = pending_bp->thread; | |
0101ce28 | 4965 | } |
c3f6f71d JM |
4966 | mention (b); |
4967 | } | |
4968 | } | |
4969 | } | |
c906108c | 4970 | |
c3f6f71d JM |
4971 | /* Parse ARG which is assumed to be a SAL specification possibly |
4972 | followed by conditionals. On return, SALS contains an array of SAL | |
4973 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4974 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4975 | |
b9362cc7 | 4976 | static void |
c3f6f71d JM |
4977 | parse_breakpoint_sals (char **address, |
4978 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
4979 | char ***addr_string, |
4980 | int *not_found_ptr) | |
c3f6f71d JM |
4981 | { |
4982 | char *addr_start = *address; | |
4983 | *addr_string = NULL; | |
4984 | /* If no arg given, or if first arg is 'if ', use the default | |
4985 | breakpoint. */ | |
4986 | if ((*address) == NULL | |
4987 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4988 | { |
4989 | if (default_breakpoint_valid) | |
4990 | { | |
c3f6f71d | 4991 | struct symtab_and_line sal; |
fe39c653 | 4992 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 4993 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
4994 | xmalloc (sizeof (struct symtab_and_line)); |
4995 | sal.pc = default_breakpoint_address; | |
4996 | sal.line = default_breakpoint_line; | |
4997 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4998 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4999 | sals->sals[0] = sal; |
5000 | sals->nelts = 1; | |
c906108c SS |
5001 | } |
5002 | else | |
5003 | error ("No default breakpoint address now."); | |
5004 | } | |
5005 | else | |
5006 | { | |
c906108c | 5007 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5008 | current_source_symtab (which is decode_line_1's default). This |
5009 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5010 | leaving default_breakpoint_* alone. |
5011 | ObjC: However, don't match an Objective-C method name which | |
5012 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5013 | |
c214a6fd | 5014 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5015 | |
c906108c | 5016 | if (default_breakpoint_valid |
0378c332 | 5017 | && (!cursal.symtab |
1aeae86e AF |
5018 | || ((strchr ("+-", (*address)[0]) != NULL) |
5019 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5020 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5021 | default_breakpoint_line, addr_string, |
5022 | not_found_ptr); | |
c906108c | 5023 | else |
0101ce28 JJ |
5024 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5025 | addr_string, not_found_ptr); | |
c906108c | 5026 | } |
c3f6f71d JM |
5027 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5028 | if (sals->nelts > 0 && *addr_string == NULL) | |
5029 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5030 | if (addr_start != (*address)) | |
c906108c | 5031 | { |
c3f6f71d JM |
5032 | int i; |
5033 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5034 | { |
c3f6f71d JM |
5035 | /* Add the string if not present. */ |
5036 | if ((*addr_string)[i] == NULL) | |
5037 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5038 | } |
5039 | } | |
c3f6f71d | 5040 | } |
c906108c | 5041 | |
c906108c | 5042 | |
c3f6f71d JM |
5043 | /* Convert each SAL into a real PC. Verify that the PC can be |
5044 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5045 | |
b9362cc7 | 5046 | static void |
c3f6f71d JM |
5047 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5048 | char *address) | |
5049 | { | |
5050 | int i; | |
5051 | for (i = 0; i < sals->nelts; i++) | |
5052 | { | |
5053 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5054 | |
5055 | /* It's possible for the PC to be nonzero, but still an illegal | |
5056 | value on some targets. | |
5057 | ||
5058 | For example, on HP-UX if you start gdb, and before running the | |
5059 | inferior you try to set a breakpoint on a shared library function | |
5060 | "foo" where the inferior doesn't call "foo" directly but does | |
5061 | pass its address to another function call, then we do find a | |
5062 | minimal symbol for the "foo", but it's address is invalid. | |
5063 | (Appears to be an index into a table that the loader sets up | |
5064 | when the inferior is run.) | |
5065 | ||
5066 | Give the target a chance to bless sals.sals[i].pc before we | |
5067 | try to make a breakpoint for it. */ | |
45b75230 AC |
5068 | #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE |
5069 | if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) | |
c5aa993b | 5070 | { |
c3f6f71d JM |
5071 | if (address == NULL) |
5072 | error ("Cannot break without a running program."); | |
5073 | else | |
5074 | error ("Cannot break on %s without a running program.", | |
5075 | address); | |
c5aa993b | 5076 | } |
45b75230 | 5077 | #endif |
c3f6f71d JM |
5078 | } |
5079 | } | |
5080 | ||
0101ce28 JJ |
5081 | static int |
5082 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) | |
5083 | { | |
5084 | struct captured_parse_breakpoint_args *args = data; | |
5085 | ||
5086 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5087 | args->not_found_ptr); | |
5088 | ||
5089 | return GDB_RC_OK; | |
5090 | } | |
5091 | ||
c3f6f71d JM |
5092 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5093 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5094 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5095 | |
0101ce28 JJ |
5096 | PENDING_BP is non-NULL when this function is being called to resolve |
5097 | a pending breakpoint. */ | |
5098 | ||
5099 | static int | |
5100 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d JM |
5101 | { |
5102 | int tempflag, hardwareflag; | |
5103 | struct symtabs_and_lines sals; | |
52f0bd74 | 5104 | struct expression **cond = 0; |
0101ce28 | 5105 | struct symtab_and_line pending_sal; |
c3f6f71d | 5106 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5107 | char *copy_arg; |
5108 | char *err_msg; | |
c3f6f71d JM |
5109 | char *addr_start = arg; |
5110 | char **addr_string; | |
5111 | struct cleanup *old_chain; | |
5112 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 JJ |
5113 | struct captured_parse_breakpoint_args parse_args; |
5114 | int i, rc; | |
5115 | int pending = 0; | |
c3f6f71d JM |
5116 | int thread = -1; |
5117 | int ignore_count = 0; | |
0101ce28 | 5118 | int not_found = 0; |
c3f6f71d JM |
5119 | |
5120 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5121 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5122 | |
c3f6f71d JM |
5123 | sals.sals = NULL; |
5124 | sals.nelts = 0; | |
5125 | addr_string = NULL; | |
c3f6f71d | 5126 | |
0101ce28 JJ |
5127 | parse_args.arg_p = &arg; |
5128 | parse_args.sals_p = &sals; | |
5129 | parse_args.addr_string_p = &addr_string; | |
5130 | parse_args.not_found_ptr = ¬_found; | |
5131 | ||
5132 | rc = catch_exceptions_with_msg (uiout, do_captured_parse_breakpoint, | |
5133 | &parse_args, NULL, &err_msg, | |
5134 | RETURN_MASK_ALL); | |
5135 | ||
5136 | /* If caller is interested in rc value from parse, set value. */ | |
5137 | ||
5138 | if (rc != GDB_RC_OK) | |
5139 | { | |
5140 | /* Check for file or function not found. */ | |
5141 | if (not_found) | |
5142 | { | |
5143 | /* If called to resolve pending breakpoint, just return error code. */ | |
5144 | if (pending_bp) | |
3a63c4b7 AS |
5145 | { |
5146 | xfree (err_msg); | |
5147 | return rc; | |
5148 | } | |
0101ce28 JJ |
5149 | |
5150 | error_output_message (NULL, err_msg); | |
5151 | xfree (err_msg); | |
fa8d40ab JJ |
5152 | |
5153 | /* If pending breakpoint support is turned off, throw error. */ | |
5154 | ||
5155 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
2a78bfb5 | 5156 | throw_reason (RETURN_ERROR); |
fa8d40ab JJ |
5157 | |
5158 | /* If pending breakpoint support is auto query and the user selects | |
5159 | no, then simply return the error code. */ | |
5160 | if (pending_break_support == AUTO_BOOLEAN_AUTO && | |
5161 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
0101ce28 | 5162 | return rc; |
fa8d40ab JJ |
5163 | |
5164 | /* At this point, either the user was queried about setting a | |
5165 | pending breakpoint and selected yes, or pending breakpoint | |
5166 | behavior is on and thus a pending breakpoint is defaulted | |
5167 | on behalf of the user. */ | |
0101ce28 JJ |
5168 | copy_arg = xstrdup (addr_start); |
5169 | addr_string = ©_arg; | |
5170 | sals.nelts = 1; | |
5171 | sals.sals = &pending_sal; | |
5172 | pending_sal.pc = 0; | |
5173 | pending = 1; | |
5174 | } | |
5175 | else | |
3a63c4b7 AS |
5176 | { |
5177 | xfree (err_msg); | |
5178 | return rc; | |
5179 | } | |
0101ce28 JJ |
5180 | } |
5181 | else if (!sals.nelts) | |
5182 | return GDB_RC_FAIL; | |
c3f6f71d JM |
5183 | |
5184 | /* Create a chain of things that always need to be cleaned up. */ | |
5185 | old_chain = make_cleanup (null_cleanup, 0); | |
5186 | ||
0101ce28 JJ |
5187 | if (!pending) |
5188 | { | |
5189 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5190 | make_cleanup (xfree, sals.sals); | |
5191 | ||
5192 | /* Cleanup the addr_string array but not its contents. */ | |
5193 | make_cleanup (xfree, addr_string); | |
5194 | } | |
c3f6f71d JM |
5195 | |
5196 | /* Allocate space for all the cond expressions. */ | |
5197 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5198 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5199 | |
5200 | /* Allocate space for all the cond strings. */ | |
5201 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5202 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5203 | |
5204 | /* ----------------------------- SNIP ----------------------------- | |
5205 | Anything added to the cleanup chain beyond this point is assumed | |
5206 | to be part of a breakpoint. If the breakpoint create succeeds | |
5207 | then the memory is not reclaimed. */ | |
5208 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5209 | ||
5210 | /* Mark the contents of the addr_string for cleanup. These go on | |
5211 | the breakpoint_chain and only occure if the breakpoint create | |
5212 | fails. */ | |
5213 | for (i = 0; i < sals.nelts; i++) | |
5214 | { | |
5215 | if (addr_string[i] != NULL) | |
b8c9b27d | 5216 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5217 | } |
5218 | ||
5219 | /* Resolve all line numbers to PC's and verify that the addresses | |
5220 | are ok for the target. */ | |
0101ce28 JJ |
5221 | if (!pending) |
5222 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5223 | |
5224 | /* Verify that condition can be parsed, before setting any | |
5225 | breakpoints. Allocate a separate condition expression for each | |
5226 | breakpoint. */ | |
5227 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5228 | if (!pending) |
c3f6f71d | 5229 | { |
0101ce28 | 5230 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5231 | { |
0101ce28 JJ |
5232 | char *tok = arg; |
5233 | while (tok && *tok) | |
c906108c | 5234 | { |
0101ce28 JJ |
5235 | char *end_tok; |
5236 | int toklen; | |
5237 | char *cond_start = NULL; | |
5238 | char *cond_end = NULL; | |
5239 | while (*tok == ' ' || *tok == '\t') | |
5240 | tok++; | |
5241 | ||
5242 | end_tok = tok; | |
5243 | ||
5244 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5245 | end_tok++; | |
5246 | ||
5247 | toklen = end_tok - tok; | |
5248 | ||
5249 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5250 | { | |
5251 | tok = cond_start = end_tok + 1; | |
5252 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5253 | 0); | |
5254 | make_cleanup (xfree, cond[i]); | |
5255 | cond_end = tok; | |
5256 | cond_string[i] = savestring (cond_start, | |
5257 | cond_end - cond_start); | |
5258 | make_cleanup (xfree, cond_string[i]); | |
5259 | } | |
5260 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5261 | { | |
5262 | char *tmptok; | |
5263 | ||
5264 | tok = end_tok + 1; | |
5265 | tmptok = tok; | |
5266 | thread = strtol (tok, &tok, 0); | |
5267 | if (tok == tmptok) | |
5268 | error ("Junk after thread keyword."); | |
5269 | if (!valid_thread_id (thread)) | |
5270 | error ("Unknown thread %d\n", thread); | |
5271 | } | |
5272 | else | |
5273 | error ("Junk at end of arguments."); | |
c906108c | 5274 | } |
c906108c | 5275 | } |
0101ce28 JJ |
5276 | create_breakpoints (sals, addr_string, cond, cond_string, |
5277 | hardwareflag ? bp_hardware_breakpoint | |
5278 | : bp_breakpoint, | |
5279 | tempflag ? disp_del : disp_donttouch, | |
5280 | thread, ignore_count, from_tty, | |
5281 | pending_bp); | |
c906108c | 5282 | } |
0101ce28 JJ |
5283 | else |
5284 | { | |
5285 | struct symtab_and_line sal; | |
5286 | struct breakpoint *b; | |
5287 | ||
5288 | sal.symtab = NULL; | |
5289 | sal.pc = 0; | |
5290 | ||
5291 | make_cleanup (xfree, copy_arg); | |
5292 | ||
5293 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5294 | : bp_breakpoint); | |
5295 | set_breakpoint_count (breakpoint_count + 1); | |
5296 | b->number = breakpoint_count; | |
5297 | b->cond = *cond; | |
5298 | b->thread = thread; | |
5299 | b->addr_string = *addr_string; | |
5300 | b->cond_string = *cond_string; | |
5301 | b->ignore_count = ignore_count; | |
5302 | b->pending = 1; | |
5303 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5304 | b->from_tty = from_tty; | |
5305 | b->flag = flag; | |
5306 | mention (b); | |
5307 | } | |
5308 | ||
c3f6f71d JM |
5309 | if (sals.nelts > 1) |
5310 | { | |
5311 | warning ("Multiple breakpoints were set."); | |
5312 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5313 | } |
c3f6f71d JM |
5314 | /* That's it. Discard the cleanups for data inserted into the |
5315 | breakpoint. */ | |
5316 | discard_cleanups (breakpoint_chain); | |
5317 | /* But cleanup everything else. */ | |
5318 | do_cleanups (old_chain); | |
0101ce28 JJ |
5319 | |
5320 | return GDB_RC_OK; | |
c3f6f71d | 5321 | } |
c906108c | 5322 | |
c3f6f71d JM |
5323 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5324 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5325 | |
c3f6f71d JM |
5326 | struct captured_breakpoint_args |
5327 | { | |
5328 | char *address; | |
5329 | char *condition; | |
5330 | int hardwareflag; | |
5331 | int tempflag; | |
5332 | int thread; | |
5333 | int ignore_count; | |
5334 | }; | |
5335 | ||
5336 | static int | |
5337 | do_captured_breakpoint (void *data) | |
5338 | { | |
5339 | struct captured_breakpoint_args *args = data; | |
5340 | struct symtabs_and_lines sals; | |
52f0bd74 | 5341 | struct expression **cond; |
c3f6f71d JM |
5342 | struct cleanup *old_chain; |
5343 | struct cleanup *breakpoint_chain = NULL; | |
5344 | int i; | |
5345 | char **addr_string; | |
5346 | char **cond_string; | |
5347 | ||
5348 | char *address_end; | |
5349 | ||
5350 | /* Parse the source and lines spec. Delay check that the expression | |
5351 | didn't contain trailing garbage until after cleanups are in | |
5352 | place. */ | |
5353 | sals.sals = NULL; | |
5354 | sals.nelts = 0; | |
5355 | address_end = args->address; | |
5356 | addr_string = NULL; | |
0101ce28 | 5357 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5358 | |
5359 | if (!sals.nelts) | |
5360 | return GDB_RC_NONE; | |
5361 | ||
5362 | /* Create a chain of things at always need to be cleaned up. */ | |
5363 | old_chain = make_cleanup (null_cleanup, 0); | |
5364 | ||
5365 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5366 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5367 | |
5368 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5369 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5370 | |
5371 | /* Allocate space for all the cond expressions. */ | |
5372 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5373 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5374 | |
5375 | /* Allocate space for all the cond strings. */ | |
5376 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5377 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5378 | |
5379 | /* ----------------------------- SNIP ----------------------------- | |
5380 | Anything added to the cleanup chain beyond this point is assumed | |
5381 | to be part of a breakpoint. If the breakpoint create goes | |
5382 | through then that memory is not cleaned up. */ | |
5383 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5384 | ||
5385 | /* Mark the contents of the addr_string for cleanup. These go on | |
5386 | the breakpoint_chain and only occure if the breakpoint create | |
5387 | fails. */ | |
c906108c SS |
5388 | for (i = 0; i < sals.nelts; i++) |
5389 | { | |
c3f6f71d | 5390 | if (addr_string[i] != NULL) |
b8c9b27d | 5391 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5392 | } |
5393 | ||
c3f6f71d JM |
5394 | /* Wait until now before checking for garbage at the end of the |
5395 | address. That way cleanups can take care of freeing any | |
5396 | memory. */ | |
5397 | if (*address_end != '\0') | |
5398 | error ("Garbage %s following breakpoint address", address_end); | |
5399 | ||
5400 | /* Resolve all line numbers to PC's. */ | |
5401 | breakpoint_sals_to_pc (&sals, args->address); | |
5402 | ||
5403 | /* Verify that conditions can be parsed, before setting any | |
5404 | breakpoints. */ | |
5405 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5406 | { |
c3f6f71d JM |
5407 | if (args->condition != NULL) |
5408 | { | |
5409 | char *tok = args->condition; | |
5410 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5411 | if (*tok != '\0') | |
5412 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 5413 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5414 | cond_string[i] = xstrdup (args->condition); |
5415 | } | |
c906108c | 5416 | } |
c3f6f71d JM |
5417 | |
5418 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5419 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5420 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5421 | args->thread, args->ignore_count, 0/*from-tty*/, |
5422 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5423 | |
5424 | /* That's it. Discard the cleanups for data inserted into the | |
5425 | breakpoint. */ | |
5426 | discard_cleanups (breakpoint_chain); | |
5427 | /* But cleanup everything else. */ | |
c906108c | 5428 | do_cleanups (old_chain); |
c3f6f71d | 5429 | return GDB_RC_OK; |
c906108c SS |
5430 | } |
5431 | ||
c3f6f71d JM |
5432 | enum gdb_rc |
5433 | gdb_breakpoint (char *address, char *condition, | |
5434 | int hardwareflag, int tempflag, | |
5435 | int thread, int ignore_count) | |
5436 | { | |
5437 | struct captured_breakpoint_args args; | |
5438 | args.address = address; | |
5439 | args.condition = condition; | |
5440 | args.hardwareflag = hardwareflag; | |
5441 | args.tempflag = tempflag; | |
5442 | args.thread = thread; | |
5443 | args.ignore_count = ignore_count; | |
5444 | return catch_errors (do_captured_breakpoint, &args, | |
5445 | NULL, RETURN_MASK_ALL); | |
5446 | } | |
5447 | ||
5448 | ||
c906108c SS |
5449 | /* Helper function for break_command_1 and disassemble_command. */ |
5450 | ||
5451 | void | |
fba45db2 | 5452 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5453 | { |
5454 | CORE_ADDR pc; | |
5455 | ||
5456 | if (sal->pc == 0 && sal->symtab != NULL) | |
5457 | { | |
5458 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5459 | error ("No line %d in file \"%s\".", | |
5460 | sal->line, sal->symtab->filename); | |
5461 | sal->pc = pc; | |
5462 | } | |
5463 | ||
5464 | if (sal->section == 0 && sal->symtab != NULL) | |
5465 | { | |
5466 | struct blockvector *bv; | |
c5aa993b JM |
5467 | struct block *b; |
5468 | struct symbol *sym; | |
5469 | int index; | |
c906108c | 5470 | |
c5aa993b | 5471 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5472 | if (bv != NULL) |
5473 | { | |
c5aa993b | 5474 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5475 | sym = block_function (b); |
5476 | if (sym != NULL) | |
5477 | { | |
5478 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5479 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5480 | } | |
5481 | else | |
5482 | { | |
5483 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5484 | have to look harder. This case can be executed if we have |
5485 | line numbers but no functions (as can happen in assembly | |
5486 | source). */ | |
c906108c | 5487 | |
c5aa993b | 5488 | struct minimal_symbol *msym; |
c906108c SS |
5489 | |
5490 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5491 | if (msym) | |
5492 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5493 | } | |
5494 | } | |
5495 | } | |
5496 | } | |
5497 | ||
5498 | void | |
fba45db2 | 5499 | break_command (char *arg, int from_tty) |
c906108c | 5500 | { |
0101ce28 | 5501 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5502 | } |
5503 | ||
c906108c | 5504 | void |
fba45db2 | 5505 | tbreak_command (char *arg, int from_tty) |
c906108c | 5506 | { |
0101ce28 | 5507 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5508 | } |
5509 | ||
c906108c | 5510 | static void |
fba45db2 | 5511 | hbreak_command (char *arg, int from_tty) |
c906108c | 5512 | { |
0101ce28 | 5513 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5514 | } |
5515 | ||
5516 | static void | |
fba45db2 | 5517 | thbreak_command (char *arg, int from_tty) |
c906108c | 5518 | { |
0101ce28 | 5519 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5520 | } |
5521 | ||
5522 | static void | |
fba45db2 | 5523 | stop_command (char *arg, int from_tty) |
c906108c SS |
5524 | { |
5525 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5526 | Usage: stop in <function | address>\n\ | |
5527 | stop at <line>\n"); | |
5528 | } | |
5529 | ||
5530 | static void | |
fba45db2 | 5531 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5532 | { |
5533 | int badInput = 0; | |
5534 | ||
c5aa993b | 5535 | if (arg == (char *) NULL) |
c906108c SS |
5536 | badInput = 1; |
5537 | else if (*arg != '*') | |
5538 | { | |
5539 | char *argptr = arg; | |
5540 | int hasColon = 0; | |
5541 | ||
53a5351d JM |
5542 | /* look for a ':'. If this is a line number specification, then |
5543 | say it is bad, otherwise, it should be an address or | |
5544 | function/method name */ | |
c906108c | 5545 | while (*argptr && !hasColon) |
c5aa993b JM |
5546 | { |
5547 | hasColon = (*argptr == ':'); | |
5548 | argptr++; | |
5549 | } | |
c906108c SS |
5550 | |
5551 | if (hasColon) | |
c5aa993b | 5552 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5553 | else |
c5aa993b | 5554 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5555 | } |
5556 | ||
5557 | if (badInput) | |
c5aa993b | 5558 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c | 5559 | else |
0101ce28 | 5560 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5561 | } |
5562 | ||
5563 | static void | |
fba45db2 | 5564 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5565 | { |
5566 | int badInput = 0; | |
5567 | ||
c5aa993b | 5568 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5569 | badInput = 1; |
5570 | else | |
5571 | { | |
5572 | char *argptr = arg; | |
5573 | int hasColon = 0; | |
5574 | ||
5575 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5576 | it is probably a line number. */ |
c906108c | 5577 | while (*argptr && !hasColon) |
c5aa993b JM |
5578 | { |
5579 | hasColon = (*argptr == ':'); | |
5580 | argptr++; | |
5581 | } | |
c906108c SS |
5582 | |
5583 | if (hasColon) | |
c5aa993b | 5584 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5585 | else |
c5aa993b | 5586 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5587 | } |
5588 | ||
5589 | if (badInput) | |
c5aa993b | 5590 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c | 5591 | else |
0101ce28 | 5592 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5593 | } |
5594 | ||
53a5351d JM |
5595 | /* accessflag: hw_write: watch write, |
5596 | hw_read: watch read, | |
5597 | hw_access: watch access (read or write) */ | |
c906108c | 5598 | static void |
fba45db2 | 5599 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5600 | { |
5601 | struct breakpoint *b; | |
5602 | struct symtab_and_line sal; | |
5603 | struct expression *exp; | |
5604 | struct block *exp_valid_block; | |
5605 | struct value *val, *mark; | |
5606 | struct frame_info *frame; | |
5607 | struct frame_info *prev_frame = NULL; | |
5608 | char *exp_start = NULL; | |
5609 | char *exp_end = NULL; | |
5610 | char *tok, *end_tok; | |
5611 | int toklen; | |
5612 | char *cond_start = NULL; | |
5613 | char *cond_end = NULL; | |
5614 | struct expression *cond = NULL; | |
5615 | int i, other_type_used, target_resources_ok = 0; | |
5616 | enum bptype bp_type; | |
5617 | int mem_cnt = 0; | |
5618 | ||
fe39c653 | 5619 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5620 | |
c906108c SS |
5621 | /* Parse arguments. */ |
5622 | innermost_block = NULL; | |
5623 | exp_start = arg; | |
5624 | exp = parse_exp_1 (&arg, 0, 0); | |
5625 | exp_end = arg; | |
5626 | exp_valid_block = innermost_block; | |
5627 | mark = value_mark (); | |
5628 | val = evaluate_expression (exp); | |
5629 | release_value (val); | |
5630 | if (VALUE_LAZY (val)) | |
5631 | value_fetch_lazy (val); | |
5632 | ||
5633 | tok = arg; | |
5634 | while (*tok == ' ' || *tok == '\t') | |
5635 | tok++; | |
5636 | end_tok = tok; | |
5637 | ||
5638 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5639 | end_tok++; | |
5640 | ||
5641 | toklen = end_tok - tok; | |
5642 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5643 | { | |
5644 | tok = cond_start = end_tok + 1; | |
5645 | cond = parse_exp_1 (&tok, 0, 0); | |
5646 | cond_end = tok; | |
5647 | } | |
5648 | if (*tok) | |
c5aa993b | 5649 | error ("Junk at end of command."); |
c906108c | 5650 | |
53a5351d | 5651 | if (accessflag == hw_read) |
c5aa993b | 5652 | bp_type = bp_read_watchpoint; |
53a5351d | 5653 | else if (accessflag == hw_access) |
c5aa993b JM |
5654 | bp_type = bp_access_watchpoint; |
5655 | else | |
5656 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5657 | |
5658 | mem_cnt = can_use_hardware_watchpoint (val); | |
5659 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5660 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5661 | if (mem_cnt != 0) |
5662 | { | |
5663 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5664 | target_resources_ok = |
5665 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5666 | other_type_used); | |
c5aa993b | 5667 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5668 | error ("Target does not support this type of hardware watchpoint."); |
5669 | ||
c5aa993b | 5670 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5671 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5672 | } |
c906108c SS |
5673 | |
5674 | #if defined(HPUXHPPA) | |
c5aa993b | 5675 | /* On HP-UX if you set a h/w |
c906108c SS |
5676 | watchpoint before the "run" command, the inferior dies with a e.g., |
5677 | SIGILL once you start it. I initially believed this was due to a | |
5678 | bad interaction between page protection traps and the initial | |
5679 | startup sequence by the dynamic linker. | |
5680 | ||
5681 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5682 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5683 | yet, which forced slow watches before a "run" or "attach", and it |
5684 | still fails somewhere in the startup code. | |
5685 | ||
5686 | Until I figure out what's happening, I'm disallowing watches altogether | |
5687 | before the "run" or "attach" command. We'll tell the user they must | |
5688 | set watches after getting the program started. */ | |
c5aa993b | 5689 | if (!target_has_execution) |
c906108c SS |
5690 | { |
5691 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5692 | return; | |
5693 | } | |
5694 | #endif /* HPUXHPPA */ | |
c5aa993b | 5695 | |
4d28f7a8 KB |
5696 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5697 | watchpoint could not be set. */ | |
5698 | if (!mem_cnt || target_resources_ok <= 0) | |
5699 | bp_type = bp_watchpoint; | |
5700 | ||
c906108c | 5701 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5702 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5703 | set_breakpoint_count (breakpoint_count + 1); |
5704 | b->number = breakpoint_count; | |
b5de0fa7 | 5705 | b->disposition = disp_donttouch; |
c906108c SS |
5706 | b->exp = exp; |
5707 | b->exp_valid_block = exp_valid_block; | |
5708 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5709 | b->val = val; | |
5710 | b->cond = cond; | |
5711 | if (cond_start) | |
5712 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5713 | else | |
5714 | b->cond_string = 0; | |
c5aa993b | 5715 | |
c906108c SS |
5716 | frame = block_innermost_frame (exp_valid_block); |
5717 | if (frame) | |
5718 | { | |
5719 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5720 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5721 | } |
5722 | else | |
101dcfbe AC |
5723 | { |
5724 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5725 | } | |
c906108c | 5726 | |
c906108c SS |
5727 | /* If the expression is "local", then set up a "watchpoint scope" |
5728 | breakpoint at the point where we've left the scope of the watchpoint | |
5729 | expression. */ | |
5730 | if (innermost_block) | |
5731 | { | |
5732 | if (prev_frame) | |
5733 | { | |
5734 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5735 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5736 | bp_watchpoint_scope); | |
c906108c | 5737 | |
b5de0fa7 | 5738 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5739 | |
5740 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5741 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5742 | |
5743 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5744 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5745 | |
5746 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5747 | scope_breakpoint->loc->requested_address |
5748 | = get_frame_pc (prev_frame); | |
5749 | scope_breakpoint->loc->address | |
88f7da05 KB |
5750 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5751 | scope_breakpoint->type); | |
c906108c SS |
5752 | |
5753 | /* The scope breakpoint is related to the watchpoint. We | |
5754 | will need to act on them together. */ | |
5755 | b->related_breakpoint = scope_breakpoint; | |
5756 | } | |
5757 | } | |
5758 | value_free_to_mark (mark); | |
5759 | mention (b); | |
5760 | } | |
5761 | ||
5762 | /* Return count of locations need to be watched and can be handled | |
5763 | in hardware. If the watchpoint can not be handled | |
5764 | in hardware return zero. */ | |
5765 | ||
53a5351d JM |
5766 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) |
5767 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5768 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5769 | #endif |
5770 | ||
5771 | static int | |
fba45db2 | 5772 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5773 | { |
5774 | int found_memory_cnt = 0; | |
2e70b7b9 | 5775 | struct value *head = v; |
c906108c SS |
5776 | |
5777 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5778 | if (!can_use_hw_watchpoints) |
c906108c | 5779 | return 0; |
c5aa993b | 5780 | |
5c44784c JM |
5781 | /* Make sure that the value of the expression depends only upon |
5782 | memory contents, and values computed from them within GDB. If we | |
5783 | find any register references or function calls, we can't use a | |
5784 | hardware watchpoint. | |
5785 | ||
5786 | The idea here is that evaluating an expression generates a series | |
5787 | of values, one holding the value of every subexpression. (The | |
5788 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5789 | a*b+c.) GDB's values hold almost enough information to establish | |
5790 | the criteria given above --- they identify memory lvalues, | |
5791 | register lvalues, computed values, etcetera. So we can evaluate | |
5792 | the expression, and then scan the chain of values that leaves | |
5793 | behind to decide whether we can detect any possible change to the | |
5794 | expression's final value using only hardware watchpoints. | |
5795 | ||
5796 | However, I don't think that the values returned by inferior | |
5797 | function calls are special in any way. So this function may not | |
5798 | notice that an expression involving an inferior function call | |
5799 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5800 | for (; v; v = v->next) |
c906108c | 5801 | { |
5c44784c | 5802 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5803 | { |
5c44784c JM |
5804 | if (VALUE_LAZY (v)) |
5805 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5806 | we either just used its address (e.g., `a' in `a.b') or | |
5807 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5808 | ; | |
53a5351d | 5809 | else |
5c44784c JM |
5810 | { |
5811 | /* Ahh, memory we actually used! Check if we can cover | |
5812 | it with hardware watchpoints. */ | |
df407dfe | 5813 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5814 | |
5815 | /* We only watch structs and arrays if user asked for it | |
5816 | explicitly, never if they just happen to appear in a | |
5817 | middle of some value chain. */ | |
5818 | if (v == head | |
5819 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5820 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5821 | { | |
df407dfe AC |
5822 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5823 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5824 | |
5825 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5826 | return 0; | |
5827 | else | |
5828 | found_memory_cnt++; | |
5829 | } | |
5c44784c | 5830 | } |
c5aa993b | 5831 | } |
c906108c | 5832 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5833 | return 0; /* ??? What does this represent? */ |
5834 | else if (v->lval == lval_register) | |
5835 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5836 | } |
5837 | ||
5838 | /* The expression itself looks suitable for using a hardware | |
5839 | watchpoint, but give the target machine a chance to reject it. */ | |
5840 | return found_memory_cnt; | |
5841 | } | |
5842 | ||
8b93c638 | 5843 | void |
fba45db2 | 5844 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5845 | { |
5846 | watch_command (arg, from_tty); | |
5847 | } | |
8926118c | 5848 | |
c5aa993b | 5849 | static void |
fba45db2 | 5850 | watch_command (char *arg, int from_tty) |
c906108c | 5851 | { |
53a5351d | 5852 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5853 | } |
5854 | ||
8b93c638 | 5855 | void |
fba45db2 | 5856 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5857 | { |
5858 | rwatch_command (arg, from_tty); | |
5859 | } | |
8926118c | 5860 | |
c5aa993b | 5861 | static void |
fba45db2 | 5862 | rwatch_command (char *arg, int from_tty) |
c906108c | 5863 | { |
53a5351d | 5864 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5865 | } |
5866 | ||
8b93c638 | 5867 | void |
fba45db2 | 5868 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5869 | { |
5870 | awatch_command (arg, from_tty); | |
5871 | } | |
8926118c | 5872 | |
c5aa993b | 5873 | static void |
fba45db2 | 5874 | awatch_command (char *arg, int from_tty) |
c906108c | 5875 | { |
53a5351d | 5876 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5877 | } |
c906108c | 5878 | \f |
c5aa993b | 5879 | |
43ff13b4 | 5880 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5881 | because it uses the mechanisms of breakpoints. */ |
5882 | ||
43ff13b4 JM |
5883 | /* This function is called by fetch_inferior_event via the |
5884 | cmd_continuation pointer, to complete the until command. It takes | |
5885 | care of cleaning up the temporary breakpoints set up by the until | |
5886 | command. */ | |
c2c6d25f JM |
5887 | static void |
5888 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5889 | { |
0d06e24b JM |
5890 | struct cleanup *cleanups; |
5891 | ||
57e687d9 | 5892 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5893 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5894 | } |
5895 | ||
c906108c | 5896 | void |
ae66c1fc | 5897 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5898 | { |
5899 | struct symtabs_and_lines sals; | |
5900 | struct symtab_and_line sal; | |
6e7f8b9c | 5901 | struct frame_info *prev_frame = get_prev_frame (deprecated_selected_frame); |
c906108c SS |
5902 | struct breakpoint *breakpoint; |
5903 | struct cleanup *old_chain; | |
0d06e24b JM |
5904 | struct continuation_arg *arg1; |
5905 | ||
c906108c SS |
5906 | |
5907 | clear_proceed_status (); | |
5908 | ||
5909 | /* Set a breakpoint where the user wants it and at return from | |
5910 | this function */ | |
c5aa993b | 5911 | |
c906108c SS |
5912 | if (default_breakpoint_valid) |
5913 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 5914 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 5915 | else |
53a5351d | 5916 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 5917 | 0, (char ***) NULL, NULL); |
c5aa993b | 5918 | |
c906108c SS |
5919 | if (sals.nelts != 1) |
5920 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5921 | |
c906108c | 5922 | sal = sals.sals[0]; |
b8c9b27d | 5923 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5924 | |
c906108c SS |
5925 | if (*arg) |
5926 | error ("Junk at end of arguments."); | |
c5aa993b | 5927 | |
c906108c | 5928 | resolve_sal_pc (&sal); |
c5aa993b | 5929 | |
ae66c1fc EZ |
5930 | if (anywhere) |
5931 | /* If the user told us to continue until a specified location, | |
5932 | we don't specify a frame at which we need to stop. */ | |
5933 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
5934 | else | |
5935 | /* Otherwise, specify the current frame, because we want to stop only | |
5936 | at the very same frame. */ | |
5937 | breakpoint = set_momentary_breakpoint (sal, | |
5938 | get_frame_id (deprecated_selected_frame), | |
5939 | bp_until); | |
c5aa993b | 5940 | |
362646f5 | 5941 | if (!target_can_async_p ()) |
4d6140d9 | 5942 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5943 | else |
4d6140d9 | 5944 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5945 | |
5946 | /* If we are running asynchronously, and the target supports async | |
5947 | execution, we are not waiting for the target to stop, in the call | |
5948 | tp proceed, below. This means that we cannot delete the | |
5949 | brekpoints until the target has actually stopped. The only place | |
5950 | where we get a chance to do that is in fetch_inferior_event, so | |
5951 | we must set things up for that. */ | |
5952 | ||
362646f5 | 5953 | if (target_can_async_p ()) |
43ff13b4 | 5954 | { |
0d06e24b JM |
5955 | /* In this case the arg for the continuation is just the point |
5956 | in the exec_cleanups chain from where to start doing | |
5957 | cleanups, because all the continuation does is the cleanups in | |
5958 | the exec_cleanup_chain. */ | |
5959 | arg1 = | |
5960 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5961 | arg1->next = NULL; |
5962 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5963 | |
5964 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5965 | } |
c906108c | 5966 | |
ae66c1fc EZ |
5967 | /* Keep within the current frame, or in frames called by the current |
5968 | one. */ | |
c906108c SS |
5969 | if (prev_frame) |
5970 | { | |
30f7db39 AC |
5971 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
5972 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
5973 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
5974 | bp_until); | |
362646f5 | 5975 | if (!target_can_async_p ()) |
4d6140d9 | 5976 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5977 | else |
4d6140d9 | 5978 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5979 | } |
c5aa993b | 5980 | |
c906108c | 5981 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5982 | /* Do the cleanups now, anly if we are not running asynchronously, |
5983 | of if we are, but the target is still synchronous. */ | |
362646f5 | 5984 | if (!target_can_async_p ()) |
c5aa993b | 5985 | do_cleanups (old_chain); |
c906108c | 5986 | } |
ae66c1fc | 5987 | |
c906108c | 5988 | static void |
fba45db2 | 5989 | ep_skip_leading_whitespace (char **s) |
c906108c | 5990 | { |
c5aa993b JM |
5991 | if ((s == NULL) || (*s == NULL)) |
5992 | return; | |
5993 | while (isspace (**s)) | |
5994 | *s += 1; | |
c906108c | 5995 | } |
c5aa993b | 5996 | |
c906108c SS |
5997 | /* This function examines a string, and attempts to find a token |
5998 | that might be an event name in the leading characters. If a | |
5999 | possible match is found, a pointer to the last character of | |
6000 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6001 | |
c906108c | 6002 | static char * |
fba45db2 | 6003 | ep_find_event_name_end (char *arg) |
c906108c | 6004 | { |
c5aa993b JM |
6005 | char *s = arg; |
6006 | char *event_name_end = NULL; | |
6007 | ||
c906108c SS |
6008 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6009 | if (arg == NULL) | |
6010 | return NULL; | |
c5aa993b | 6011 | |
c906108c | 6012 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6013 | Basically, we're looking for alphanumerics and underscores; |
6014 | anything else delimites the token. */ | |
c906108c SS |
6015 | while (*s != '\0') |
6016 | { | |
c5aa993b JM |
6017 | if (!isalnum (*s) && (*s != '_')) |
6018 | break; | |
c906108c SS |
6019 | event_name_end = s; |
6020 | s++; | |
6021 | } | |
c5aa993b | 6022 | |
c906108c SS |
6023 | return event_name_end; |
6024 | } | |
6025 | ||
c5aa993b | 6026 | |
c906108c SS |
6027 | /* This function attempts to parse an optional "if <cond>" clause |
6028 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6029 | |
c906108c SS |
6030 | Else, it returns a pointer to the condition string. (It does not |
6031 | attempt to evaluate the string against a particular block.) And, | |
6032 | it updates arg to point to the first character following the parsed | |
6033 | if clause in the arg string. */ | |
53a5351d | 6034 | |
c906108c | 6035 | static char * |
fba45db2 | 6036 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6037 | { |
c5aa993b JM |
6038 | char *cond_string; |
6039 | ||
6040 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6041 | return NULL; |
c5aa993b | 6042 | |
c906108c SS |
6043 | /* Skip the "if" keyword. */ |
6044 | (*arg) += 2; | |
c5aa993b | 6045 | |
c906108c SS |
6046 | /* Skip any extra leading whitespace, and record the start of the |
6047 | condition string. */ | |
6048 | ep_skip_leading_whitespace (arg); | |
6049 | cond_string = *arg; | |
c5aa993b | 6050 | |
c906108c SS |
6051 | /* Assume that the condition occupies the remainder of the arg string. */ |
6052 | (*arg) += strlen (cond_string); | |
c5aa993b | 6053 | |
c906108c SS |
6054 | return cond_string; |
6055 | } | |
c5aa993b | 6056 | |
c906108c SS |
6057 | /* This function attempts to parse an optional filename from the arg |
6058 | string. If one is not found, it returns NULL. | |
c5aa993b | 6059 | |
c906108c SS |
6060 | Else, it returns a pointer to the parsed filename. (This function |
6061 | makes no attempt to verify that a file of that name exists, or is | |
6062 | accessible.) And, it updates arg to point to the first character | |
6063 | following the parsed filename in the arg string. | |
c5aa993b | 6064 | |
c906108c SS |
6065 | Note that clients needing to preserve the returned filename for |
6066 | future access should copy it to their own buffers. */ | |
6067 | static char * | |
fba45db2 | 6068 | ep_parse_optional_filename (char **arg) |
c906108c | 6069 | { |
c5aa993b JM |
6070 | static char filename[1024]; |
6071 | char *arg_p = *arg; | |
6072 | int i; | |
6073 | char c; | |
6074 | ||
c906108c SS |
6075 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6076 | return NULL; | |
c5aa993b JM |
6077 | |
6078 | for (i = 0;; i++) | |
c906108c SS |
6079 | { |
6080 | c = *arg_p; | |
6081 | if (isspace (c)) | |
c5aa993b | 6082 | c = '\0'; |
c906108c SS |
6083 | filename[i] = c; |
6084 | if (c == '\0') | |
c5aa993b | 6085 | break; |
c906108c SS |
6086 | arg_p++; |
6087 | } | |
6088 | *arg = arg_p; | |
c5aa993b | 6089 | |
c906108c SS |
6090 | return filename; |
6091 | } | |
c5aa993b | 6092 | |
c906108c SS |
6093 | /* Commands to deal with catching events, such as signals, exceptions, |
6094 | process start/exit, etc. */ | |
c5aa993b JM |
6095 | |
6096 | typedef enum | |
6097 | { | |
6098 | catch_fork, catch_vfork | |
6099 | } | |
6100 | catch_fork_kind; | |
6101 | ||
c906108c | 6102 | static void |
fba45db2 KB |
6103 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6104 | int from_tty) | |
c906108c | 6105 | { |
c5aa993b JM |
6106 | char *cond_string = NULL; |
6107 | ||
c906108c | 6108 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6109 | |
c906108c | 6110 | /* The allowed syntax is: |
c5aa993b JM |
6111 | catch [v]fork |
6112 | catch [v]fork if <cond> | |
6113 | ||
c906108c SS |
6114 | First, check if there's an if clause. */ |
6115 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6116 | |
c906108c SS |
6117 | if ((*arg != '\0') && !isspace (*arg)) |
6118 | error ("Junk at end of arguments."); | |
c5aa993b | 6119 | |
c906108c SS |
6120 | /* If this target supports it, create a fork or vfork catchpoint |
6121 | and enable reporting of such events. */ | |
c5aa993b JM |
6122 | switch (fork_kind) |
6123 | { | |
6124 | case catch_fork: | |
c906108c SS |
6125 | create_fork_event_catchpoint (tempflag, cond_string); |
6126 | break; | |
c5aa993b | 6127 | case catch_vfork: |
c906108c SS |
6128 | create_vfork_event_catchpoint (tempflag, cond_string); |
6129 | break; | |
c5aa993b | 6130 | default: |
c906108c SS |
6131 | error ("unsupported or unknown fork kind; cannot catch it"); |
6132 | break; | |
c5aa993b | 6133 | } |
c906108c SS |
6134 | } |
6135 | ||
6136 | static void | |
fba45db2 | 6137 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6138 | { |
c5aa993b | 6139 | char *cond_string = NULL; |
c906108c SS |
6140 | |
6141 | ep_skip_leading_whitespace (&arg); | |
6142 | ||
6143 | /* The allowed syntax is: | |
c5aa993b JM |
6144 | catch exec |
6145 | catch exec if <cond> | |
c906108c SS |
6146 | |
6147 | First, check if there's an if clause. */ | |
6148 | cond_string = ep_parse_optional_if_clause (&arg); | |
6149 | ||
6150 | if ((*arg != '\0') && !isspace (*arg)) | |
6151 | error ("Junk at end of arguments."); | |
6152 | ||
6153 | /* If this target supports it, create an exec catchpoint | |
6154 | and enable reporting of such events. */ | |
6155 | create_exec_event_catchpoint (tempflag, cond_string); | |
6156 | } | |
c5aa993b | 6157 | |
c906108c | 6158 | static void |
fba45db2 | 6159 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6160 | { |
c5aa993b JM |
6161 | char *dll_pathname = NULL; |
6162 | char *cond_string = NULL; | |
6163 | ||
c906108c | 6164 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6165 | |
c906108c | 6166 | /* The allowed syntax is: |
c5aa993b JM |
6167 | catch load |
6168 | catch load if <cond> | |
6169 | catch load <filename> | |
6170 | catch load <filename> if <cond> | |
6171 | ||
c906108c SS |
6172 | The user is not allowed to specify the <filename> after an |
6173 | if clause. | |
c5aa993b | 6174 | |
c906108c | 6175 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6176 | |
c906108c SS |
6177 | First, check if there's an if clause. If so, then there |
6178 | cannot be a filename. */ | |
6179 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6180 | |
c906108c SS |
6181 | /* If there was an if clause, then there cannot be a filename. |
6182 | Else, there might be a filename and an if clause. */ | |
6183 | if (cond_string == NULL) | |
6184 | { | |
6185 | dll_pathname = ep_parse_optional_filename (&arg); | |
6186 | ep_skip_leading_whitespace (&arg); | |
6187 | cond_string = ep_parse_optional_if_clause (&arg); | |
6188 | } | |
c5aa993b | 6189 | |
c906108c SS |
6190 | if ((*arg != '\0') && !isspace (*arg)) |
6191 | error ("Junk at end of arguments."); | |
c5aa993b | 6192 | |
c906108c SS |
6193 | /* Create a load breakpoint that only triggers when a load of |
6194 | the specified dll (or any dll, if no pathname was specified) | |
6195 | occurs. */ | |
39f77062 | 6196 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6197 | dll_pathname, cond_string); |
c906108c | 6198 | } |
c5aa993b | 6199 | |
c906108c | 6200 | static void |
fba45db2 | 6201 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6202 | { |
c5aa993b JM |
6203 | char *dll_pathname = NULL; |
6204 | char *cond_string = NULL; | |
6205 | ||
c906108c | 6206 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6207 | |
c906108c | 6208 | /* The allowed syntax is: |
c5aa993b JM |
6209 | catch unload |
6210 | catch unload if <cond> | |
6211 | catch unload <filename> | |
6212 | catch unload <filename> if <cond> | |
6213 | ||
c906108c SS |
6214 | The user is not allowed to specify the <filename> after an |
6215 | if clause. | |
c5aa993b | 6216 | |
c906108c | 6217 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6218 | |
c906108c SS |
6219 | First, check if there's an if clause. If so, then there |
6220 | cannot be a filename. */ | |
6221 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6222 | |
c906108c SS |
6223 | /* If there was an if clause, then there cannot be a filename. |
6224 | Else, there might be a filename and an if clause. */ | |
6225 | if (cond_string == NULL) | |
6226 | { | |
6227 | dll_pathname = ep_parse_optional_filename (&arg); | |
6228 | ep_skip_leading_whitespace (&arg); | |
6229 | cond_string = ep_parse_optional_if_clause (&arg); | |
6230 | } | |
c5aa993b | 6231 | |
c906108c SS |
6232 | if ((*arg != '\0') && !isspace (*arg)) |
6233 | error ("Junk at end of arguments."); | |
c5aa993b | 6234 | |
c906108c SS |
6235 | /* Create an unload breakpoint that only triggers when an unload of |
6236 | the specified dll (or any dll, if no pathname was specified) | |
6237 | occurs. */ | |
39f77062 | 6238 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6239 | dll_pathname, cond_string); |
c906108c | 6240 | } |
c906108c SS |
6241 | |
6242 | /* Commands to deal with catching exceptions. */ | |
6243 | ||
6244 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6245 | exception event callback */ |
c906108c SS |
6246 | |
6247 | static void | |
fba45db2 KB |
6248 | create_exception_catchpoint (int tempflag, char *cond_string, |
6249 | enum exception_event_kind ex_event, | |
6250 | struct symtab_and_line *sal) | |
c906108c | 6251 | { |
c5aa993b | 6252 | struct breakpoint *b; |
c5aa993b | 6253 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6254 | enum bptype bptype; |
c906108c | 6255 | |
c5aa993b | 6256 | if (!sal) /* no exception support? */ |
c906108c SS |
6257 | return; |
6258 | ||
c906108c SS |
6259 | switch (ex_event) |
6260 | { | |
c5aa993b | 6261 | case EX_EVENT_THROW: |
4d28f7a8 | 6262 | bptype = bp_catch_throw; |
c5aa993b JM |
6263 | break; |
6264 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6265 | bptype = bp_catch_catch; |
c5aa993b JM |
6266 | break; |
6267 | default: /* error condition */ | |
c5aa993b | 6268 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6269 | } |
4d28f7a8 KB |
6270 | |
6271 | b = set_raw_breakpoint (*sal, bptype); | |
6272 | set_breakpoint_count (breakpoint_count + 1); | |
6273 | b->number = breakpoint_count; | |
6274 | b->cond = NULL; | |
6275 | b->cond_string = (cond_string == NULL) ? | |
6276 | NULL : savestring (cond_string, strlen (cond_string)); | |
6277 | b->thread = thread; | |
6278 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6279 | b->enable_state = bp_enabled; |
6280 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6281 | mention (b); |
6282 | } | |
6283 | ||
3086aeae DJ |
6284 | static enum print_stop_action |
6285 | print_exception_catchpoint (struct breakpoint *b) | |
6286 | { | |
6287 | annotate_catchpoint (b->number); | |
6288 | ||
6289 | if (strstr (b->addr_string, "throw") != NULL) | |
6290 | printf_filtered ("\nCatchpoint %d (exception thrown)\n", | |
6291 | b->number); | |
6292 | else | |
6293 | printf_filtered ("\nCatchpoint %d (exception caught)\n", | |
6294 | b->number); | |
6295 | ||
6296 | return PRINT_SRC_AND_LOC; | |
6297 | } | |
6298 | ||
6299 | static void | |
6300 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6301 | { | |
6302 | if (addressprint) | |
6303 | { | |
6304 | annotate_field (4); | |
5cab636d | 6305 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6306 | } |
6307 | annotate_field (5); | |
5cab636d | 6308 | *last_addr = b->loc->address; |
3086aeae DJ |
6309 | if (strstr (b->addr_string, "throw") != NULL) |
6310 | ui_out_field_string (uiout, "what", "exception throw"); | |
6311 | else | |
6312 | ui_out_field_string (uiout, "what", "exception catch"); | |
6313 | } | |
6314 | ||
6315 | static void | |
6316 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6317 | { | |
6318 | if (strstr (b->addr_string, "throw") != NULL) | |
6319 | printf_filtered ("Catchpoint %d (throw)", b->number); | |
6320 | else | |
6321 | printf_filtered ("Catchpoint %d (catch)", b->number); | |
6322 | } | |
6323 | ||
6324 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6325 | print_exception_catchpoint, | |
6326 | print_one_exception_catchpoint, | |
6327 | print_mention_exception_catchpoint | |
6328 | }; | |
6329 | ||
6330 | static int | |
6331 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6332 | enum exception_event_kind ex_event, int from_tty) | |
6333 | { | |
6334 | char *trigger_func_name, *nameptr; | |
6335 | struct symtabs_and_lines sals; | |
6336 | struct breakpoint *b; | |
6337 | ||
6338 | if (ex_event == EX_EVENT_CATCH) | |
6339 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6340 | else | |
6341 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6342 | ||
6343 | nameptr = trigger_func_name; | |
68219205 | 6344 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6345 | if (sals.nelts == 0) |
6346 | { | |
b59661bd | 6347 | xfree (trigger_func_name); |
3086aeae DJ |
6348 | return 0; |
6349 | } | |
6350 | ||
6351 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6352 | set_breakpoint_count (breakpoint_count + 1); | |
6353 | b->number = breakpoint_count; | |
6354 | b->cond = NULL; | |
6355 | b->cond_string = (cond_string == NULL) ? | |
6356 | NULL : savestring (cond_string, strlen (cond_string)); | |
6357 | b->thread = -1; | |
6358 | b->addr_string = trigger_func_name; | |
6359 | b->enable_state = bp_enabled; | |
6360 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6361 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6362 | ||
b59661bd | 6363 | xfree (sals.sals); |
3086aeae DJ |
6364 | mention (b); |
6365 | return 1; | |
6366 | } | |
6367 | ||
c5aa993b | 6368 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6369 | |
6370 | static void | |
fba45db2 KB |
6371 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6372 | int tempflag, int from_tty) | |
c906108c | 6373 | { |
c5aa993b JM |
6374 | char *cond_string = NULL; |
6375 | struct symtab_and_line *sal = NULL; | |
6376 | ||
c906108c | 6377 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6378 | |
c906108c SS |
6379 | cond_string = ep_parse_optional_if_clause (&arg); |
6380 | ||
6381 | if ((*arg != '\0') && !isspace (*arg)) | |
6382 | error ("Junk at end of arguments."); | |
6383 | ||
6384 | if ((ex_event != EX_EVENT_THROW) && | |
6385 | (ex_event != EX_EVENT_CATCH)) | |
6386 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6387 | ||
3086aeae DJ |
6388 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6389 | return; | |
6390 | ||
c906108c SS |
6391 | /* See if we can find a callback routine */ |
6392 | sal = target_enable_exception_callback (ex_event, 1); | |
6393 | ||
c5aa993b | 6394 | if (sal) |
c906108c SS |
6395 | { |
6396 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6397 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6398 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6399 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6400 | else |
53a5351d | 6401 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6402 | } |
c5aa993b | 6403 | |
69f567ae | 6404 | warning ("Unsupported with this platform/compiler combination."); |
c906108c SS |
6405 | } |
6406 | ||
6407 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6408 | inside a catch_errors */ | |
6409 | ||
6410 | static int | |
4efb68b1 | 6411 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6412 | { |
6413 | args_for_catchpoint_enable *args = arg; | |
6414 | struct symtab_and_line *sal; | |
b5de0fa7 | 6415 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6416 | if (sal == NULL) |
6417 | return 0; | |
6418 | else if (sal == (struct symtab_and_line *) -1) | |
6419 | return -1; | |
6420 | else | |
c5aa993b | 6421 | return 1; /*is valid */ |
c906108c SS |
6422 | } |
6423 | ||
c906108c | 6424 | static void |
fba45db2 | 6425 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6426 | { |
c5aa993b | 6427 | |
c906108c SS |
6428 | /* The first argument may be an event name, such as "start" or "load". |
6429 | If so, then handle it as such. If it doesn't match an event name, | |
6430 | then attempt to interpret it as an exception name. (This latter is | |
6431 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6432 | |
c906108c | 6433 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6434 | char *arg1_start = arg; |
6435 | char *arg1_end; | |
6436 | int arg1_length; | |
6437 | ||
c906108c SS |
6438 | if (arg1_start == NULL) |
6439 | { | |
c5aa993b | 6440 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6441 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6442 | /* return; */ | |
c5aa993b | 6443 | /* Now, this is not allowed */ |
c906108c SS |
6444 | error ("Catch requires an event name."); |
6445 | ||
6446 | } | |
6447 | arg1_end = ep_find_event_name_end (arg1_start); | |
6448 | if (arg1_end == NULL) | |
6449 | error ("catch requires an event"); | |
6450 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6451 | |
c906108c SS |
6452 | /* Try to match what we found against known event names. */ |
6453 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6454 | { | |
6455 | error ("Catch of signal not yet implemented"); | |
6456 | } | |
6457 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6458 | { | |
53a5351d JM |
6459 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6460 | tempflag, from_tty); | |
c906108c SS |
6461 | } |
6462 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6463 | { | |
53a5351d JM |
6464 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6465 | tempflag, from_tty); | |
c906108c SS |
6466 | } |
6467 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6468 | { | |
6469 | error ("Catch of thread_start not yet implemented"); | |
6470 | } | |
6471 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6472 | { | |
6473 | error ("Catch of thread_exit not yet implemented"); | |
6474 | } | |
6475 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6476 | { | |
6477 | error ("Catch of thread_join not yet implemented"); | |
6478 | } | |
6479 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6480 | { | |
6481 | error ("Catch of start not yet implemented"); | |
6482 | } | |
6483 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6484 | { | |
6485 | error ("Catch of exit not yet implemented"); | |
6486 | } | |
6487 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6488 | { | |
c5aa993b | 6489 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6490 | } |
6491 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6492 | { | |
c5aa993b | 6493 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6494 | } |
6495 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6496 | { | |
c5aa993b | 6497 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6498 | } |
6499 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6500 | { | |
c5aa993b | 6501 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6502 | } |
6503 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6504 | { | |
c5aa993b | 6505 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6506 | } |
6507 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6508 | { | |
6509 | error ("Catch of stop not yet implemented"); | |
6510 | } | |
c5aa993b | 6511 | |
c906108c SS |
6512 | /* This doesn't appear to be an event name */ |
6513 | ||
6514 | else | |
6515 | { | |
6516 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6517 | as the name of an exception */ |
c906108c | 6518 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6519 | /* Now this is not allowed */ |
c906108c SS |
6520 | error ("Unknown event kind specified for catch"); |
6521 | ||
6522 | } | |
6523 | } | |
6524 | ||
6525 | /* Used by the gui, could be made a worker for other things. */ | |
6526 | ||
6527 | struct breakpoint * | |
fba45db2 | 6528 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6529 | { |
6530 | struct breakpoint *b; | |
4d28f7a8 | 6531 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6532 | set_breakpoint_count (breakpoint_count + 1); |
6533 | b->number = breakpoint_count; | |
c906108c SS |
6534 | b->cond = 0; |
6535 | b->thread = -1; | |
6536 | return b; | |
6537 | } | |
6538 | ||
c906108c | 6539 | static void |
fba45db2 | 6540 | catch_command (char *arg, int from_tty) |
c906108c SS |
6541 | { |
6542 | catch_command_1 (arg, 0, from_tty); | |
6543 | } | |
6544 | \f | |
6545 | ||
6546 | static void | |
fba45db2 | 6547 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6548 | { |
6549 | catch_command_1 (arg, 1, from_tty); | |
6550 | } | |
6551 | ||
80f8a6eb | 6552 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6553 | |
6554 | static void | |
fba45db2 | 6555 | clear_command (char *arg, int from_tty) |
c906108c | 6556 | { |
80f8a6eb | 6557 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6558 | int default_match; |
6559 | struct symtabs_and_lines sals; | |
6560 | struct symtab_and_line sal; | |
c906108c SS |
6561 | int i; |
6562 | ||
6563 | if (arg) | |
6564 | { | |
6565 | sals = decode_line_spec (arg, 1); | |
6566 | default_match = 0; | |
6567 | } | |
6568 | else | |
6569 | { | |
c5aa993b | 6570 | sals.sals = (struct symtab_and_line *) |
c906108c | 6571 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6572 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6573 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6574 | sal.line = default_breakpoint_line; |
6575 | sal.symtab = default_breakpoint_symtab; | |
6576 | sal.pc = default_breakpoint_address; | |
6577 | if (sal.symtab == 0) | |
6578 | error ("No source file specified."); | |
6579 | ||
6580 | sals.sals[0] = sal; | |
6581 | sals.nelts = 1; | |
6582 | ||
6583 | default_match = 1; | |
6584 | } | |
6585 | ||
6586 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6587 | to it. Do it in two passes, solely to preserve the current |
6588 | behavior that from_tty is forced true if we delete more than | |
6589 | one breakpoint. */ | |
c906108c | 6590 | |
80f8a6eb | 6591 | found = NULL; |
c906108c SS |
6592 | for (i = 0; i < sals.nelts; i++) |
6593 | { | |
6594 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6595 | If line given (pc == 0), clear all bpts on specified line. |
6596 | If defaulting, clear all bpts on default line | |
c906108c | 6597 | or at default pc. |
c5aa993b JM |
6598 | |
6599 | defaulting sal.pc != 0 tests to do | |
6600 | ||
6601 | 0 1 pc | |
6602 | 1 1 pc _and_ line | |
6603 | 0 0 line | |
6604 | 1 0 <can't happen> */ | |
c906108c SS |
6605 | |
6606 | sal = sals.sals[i]; | |
80f8a6eb | 6607 | prev = NULL; |
c906108c | 6608 | |
80f8a6eb MS |
6609 | /* Find all matching breakpoints, remove them from the |
6610 | breakpoint chain, and add them to the 'found' chain. */ | |
6611 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6612 | { |
80f8a6eb MS |
6613 | /* Are we going to delete b? */ |
6614 | if (b->type != bp_none | |
6615 | && b->type != bp_watchpoint | |
6616 | && b->type != bp_hardware_watchpoint | |
6617 | && b->type != bp_read_watchpoint | |
6618 | && b->type != bp_access_watchpoint | |
6619 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6620 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6621 | && (!section_is_overlay (b->loc->section) |
6622 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6623 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6624 | || ((default_match || (0 == sal.pc)) | |
6625 | && b->source_file != NULL | |
6626 | && sal.symtab != NULL | |
6314a349 | 6627 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6628 | && b->line_number == sal.line))) |
6629 | /* Yes, if sal source file and line matches b. */ | |
6630 | { | |
6631 | /* Remove it from breakpoint_chain... */ | |
6632 | if (b == breakpoint_chain) | |
6633 | { | |
6634 | /* b is at the head of the list */ | |
6635 | breakpoint_chain = b->next; | |
6636 | } | |
6637 | else | |
6638 | { | |
6639 | prev->next = b->next; | |
6640 | } | |
6641 | /* And add it to 'found' chain. */ | |
6642 | b->next = found; | |
6643 | found = b; | |
6644 | } | |
c906108c | 6645 | else |
80f8a6eb MS |
6646 | { |
6647 | /* Keep b, and keep a pointer to it. */ | |
6648 | prev = b; | |
6649 | } | |
c906108c | 6650 | } |
80f8a6eb MS |
6651 | } |
6652 | /* Now go thru the 'found' chain and delete them. */ | |
6653 | if (found == 0) | |
6654 | { | |
6655 | if (arg) | |
6656 | error ("No breakpoint at %s.", arg); | |
6657 | else | |
6658 | error ("No breakpoint at this line."); | |
6659 | } | |
c906108c | 6660 | |
80f8a6eb MS |
6661 | if (found->next) |
6662 | from_tty = 1; /* Always report if deleted more than one */ | |
6663 | if (from_tty) | |
6664 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
6665 | breakpoints_changed (); | |
6666 | while (found) | |
6667 | { | |
c5aa993b | 6668 | if (from_tty) |
80f8a6eb MS |
6669 | printf_unfiltered ("%d ", found->number); |
6670 | tmp = found->next; | |
6671 | delete_breakpoint (found); | |
6672 | found = tmp; | |
c906108c | 6673 | } |
80f8a6eb MS |
6674 | if (from_tty) |
6675 | putchar_unfiltered ('\n'); | |
c906108c SS |
6676 | } |
6677 | \f | |
6678 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6679 | all breakpoints that are marked for deletion, whether hit or not. | |
6680 | This is called after any breakpoint is hit, or after errors. */ | |
6681 | ||
6682 | void | |
fba45db2 | 6683 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6684 | { |
6685 | struct breakpoint *b, *temp; | |
6686 | ||
6687 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6688 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6689 | && bs->stop) |
6690 | delete_breakpoint (bs->breakpoint_at); | |
6691 | ||
6692 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6693 | { |
b5de0fa7 | 6694 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6695 | delete_breakpoint (b); |
6696 | } | |
c906108c SS |
6697 | } |
6698 | ||
53a5351d JM |
6699 | /* Delete a breakpoint and clean up all traces of it in the data |
6700 | structures. */ | |
c906108c SS |
6701 | |
6702 | void | |
fba45db2 | 6703 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6704 | { |
52f0bd74 AC |
6705 | struct breakpoint *b; |
6706 | bpstat bs; | |
7cc221ef | 6707 | struct bp_location *loc; |
c906108c SS |
6708 | |
6709 | if (bpt == NULL) | |
6710 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6711 | ||
6712 | ||
6713 | /* Has this bp already been deleted? This can happen because multiple | |
6714 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6715 | ||
6716 | One example of this happening is a watchpoint's scope bp. When the | |
6717 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6718 | delete it. We also delete its scope bp. But the scope bp is marked | |
6719 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6720 | checked for auto-deleting bp's, which are deleted. | |
6721 | ||
6722 | A real solution to this problem might involve reference counts in bp's, | |
6723 | and/or giving them pointers back to their referencing bpstat's, and | |
6724 | teaching delete_breakpoint to only free a bp's storage when no more | |
6725 | references were extent. A cheaper bandaid was chosen. */ | |
6726 | if (bpt->type == bp_none) | |
6727 | return; | |
6728 | ||
9a4105ab AC |
6729 | if (deprecated_delete_breakpoint_hook) |
6730 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6731 | breakpoint_delete_event (bpt->number); |
c906108c | 6732 | |
5cab636d | 6733 | if (bpt->loc->inserted) |
0bde7532 | 6734 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6735 | |
7270d8f2 OF |
6736 | free_valchain (bpt->loc); |
6737 | ||
c906108c SS |
6738 | if (breakpoint_chain == bpt) |
6739 | breakpoint_chain = bpt->next; | |
6740 | ||
7cc221ef DJ |
6741 | if (bp_location_chain == bpt->loc) |
6742 | bp_location_chain = bpt->loc->next; | |
6743 | ||
c906108c SS |
6744 | /* If we have callback-style exception catchpoints, don't go through |
6745 | the adjustments to the C++ runtime library etc. if the inferior | |
6746 | isn't actually running. target_enable_exception_callback for a | |
6747 | null target ops vector gives an undesirable error message, so we | |
6748 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6749 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6750 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6751 | { | |
53a5351d | 6752 | /* Format possible error msg */ |
9ebf4acf AC |
6753 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6754 | bpt->number); | |
6755 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6756 | args_for_catchpoint_enable args; | |
53a5351d JM |
6757 | args.kind = bpt->type == bp_catch_catch ? |
6758 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6759 | args.enable_p = 0; |
c906108c SS |
6760 | catch_errors (cover_target_enable_exception_callback, &args, |
6761 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6762 | do_cleanups (cleanups); |
c906108c SS |
6763 | } |
6764 | ||
6765 | ||
6766 | ALL_BREAKPOINTS (b) | |
6767 | if (b->next == bpt) | |
c5aa993b JM |
6768 | { |
6769 | b->next = bpt->next; | |
6770 | break; | |
6771 | } | |
c906108c | 6772 | |
7cc221ef DJ |
6773 | ALL_BP_LOCATIONS (loc) |
6774 | if (loc->next == bpt->loc) | |
6775 | { | |
6776 | loc->next = bpt->loc->next; | |
6777 | break; | |
6778 | } | |
6779 | ||
9f60f21b | 6780 | check_duplicates (bpt); |
c906108c SS |
6781 | /* If this breakpoint was inserted, and there is another breakpoint |
6782 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6783 | if (bpt->loc->inserted |
c906108c SS |
6784 | && bpt->type != bp_hardware_watchpoint |
6785 | && bpt->type != bp_read_watchpoint | |
6786 | && bpt->type != bp_access_watchpoint | |
6787 | && bpt->type != bp_catch_fork | |
6788 | && bpt->type != bp_catch_vfork | |
6789 | && bpt->type != bp_catch_exec) | |
6790 | { | |
6791 | ALL_BREAKPOINTS (b) | |
5cab636d | 6792 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6793 | && b->loc->section == bpt->loc->section |
5cab636d | 6794 | && !b->loc->duplicate |
b5de0fa7 EZ |
6795 | && b->enable_state != bp_disabled |
6796 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6797 | && !b->pending |
b5de0fa7 | 6798 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6799 | { |
6800 | int val; | |
53a5351d | 6801 | |
c2c6d25f JM |
6802 | /* We should never reach this point if there is a permanent |
6803 | breakpoint at the same address as the one being deleted. | |
6804 | If there is a permanent breakpoint somewhere, it should | |
6805 | always be the only one inserted. */ | |
b5de0fa7 | 6806 | if (b->enable_state == bp_permanent) |
8e65ff28 AC |
6807 | internal_error (__FILE__, __LINE__, |
6808 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6809 | "a permanent breakpoint"); |
6810 | ||
53a5351d | 6811 | if (b->type == bp_hardware_breakpoint) |
5cab636d | 6812 | val = target_insert_hw_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6813 | else |
5cab636d | 6814 | val = target_insert_breakpoint (b->loc->address, b->loc->shadow_contents); |
53a5351d | 6815 | |
81d0cc19 | 6816 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
6817 | if (val != 0) |
6818 | { | |
81d0cc19 GS |
6819 | struct ui_file *tmp_error_stream = mem_fileopen (); |
6820 | make_cleanup_ui_file_delete (tmp_error_stream); | |
6821 | ||
6822 | ||
6823 | if (b->type == bp_hardware_breakpoint) | |
6824 | { | |
6825 | fprintf_unfiltered (tmp_error_stream, | |
6826 | "Cannot insert hardware breakpoint %d.\n" | |
6827 | "You may have requested too many hardware breakpoints.\n", | |
6828 | b->number); | |
6829 | } | |
6830 | else | |
6831 | { | |
6832 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
6833 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
5cab636d | 6834 | print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
6835 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
6836 | safe_strerror (val)); | |
6837 | } | |
6838 | ||
6839 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 6840 | target_terminal_ours_for_output (); |
81d0cc19 | 6841 | error_stream(tmp_error_stream); |
c5aa993b JM |
6842 | } |
6843 | else | |
5cab636d | 6844 | b->loc->inserted = 1; |
c5aa993b | 6845 | } |
c906108c SS |
6846 | } |
6847 | ||
6848 | free_command_lines (&bpt->commands); | |
6849 | if (bpt->cond) | |
b8c9b27d | 6850 | xfree (bpt->cond); |
c906108c | 6851 | if (bpt->cond_string != NULL) |
b8c9b27d | 6852 | xfree (bpt->cond_string); |
c906108c | 6853 | if (bpt->addr_string != NULL) |
b8c9b27d | 6854 | xfree (bpt->addr_string); |
c906108c | 6855 | if (bpt->exp != NULL) |
b8c9b27d | 6856 | xfree (bpt->exp); |
c906108c | 6857 | if (bpt->exp_string != NULL) |
b8c9b27d | 6858 | xfree (bpt->exp_string); |
c906108c SS |
6859 | if (bpt->val != NULL) |
6860 | value_free (bpt->val); | |
6861 | if (bpt->source_file != NULL) | |
b8c9b27d | 6862 | xfree (bpt->source_file); |
c906108c | 6863 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6864 | xfree (bpt->dll_pathname); |
c906108c | 6865 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6866 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6867 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6868 | xfree (bpt->exec_pathname); |
c906108c SS |
6869 | |
6870 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6871 | /* FIXME, how can we find all bpstat's? | |
6872 | We just check stop_bpstat for now. */ | |
6873 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6874 | if (bs->breakpoint_at == bpt) | |
6875 | { | |
6876 | bs->breakpoint_at = NULL; | |
c906108c | 6877 | bs->old_val = NULL; |
c2b8ed2c | 6878 | /* bs->commands will be freed later. */ |
c906108c SS |
6879 | } |
6880 | /* On the chance that someone will soon try again to delete this same | |
6881 | bp, we mark it as deleted before freeing its storage. */ | |
6882 | bpt->type = bp_none; | |
6883 | ||
5cab636d | 6884 | xfree (bpt->loc); |
b8c9b27d | 6885 | xfree (bpt); |
c906108c SS |
6886 | } |
6887 | ||
4d6140d9 AC |
6888 | static void |
6889 | do_delete_breakpoint_cleanup (void *b) | |
6890 | { | |
6891 | delete_breakpoint (b); | |
6892 | } | |
6893 | ||
6894 | struct cleanup * | |
6895 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6896 | { | |
6897 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6898 | } | |
6899 | ||
6900 | struct cleanup * | |
6901 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6902 | { | |
6903 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6904 | } | |
6905 | ||
c906108c | 6906 | void |
fba45db2 | 6907 | delete_command (char *arg, int from_tty) |
c906108c SS |
6908 | { |
6909 | struct breakpoint *b, *temp; | |
6910 | ||
ea9365bb TT |
6911 | dont_repeat (); |
6912 | ||
c906108c SS |
6913 | if (arg == 0) |
6914 | { | |
6915 | int breaks_to_delete = 0; | |
6916 | ||
6917 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6918 | Do not delete internal or call-dummy breakpoints, these |
6919 | have to be deleted with an explicit breakpoint number argument. */ | |
6920 | ALL_BREAKPOINTS (b) | |
6921 | { | |
6922 | if (b->type != bp_call_dummy && | |
6923 | b->type != bp_shlib_event && | |
c4093a6a | 6924 | b->type != bp_thread_event && |
1900040c | 6925 | b->type != bp_overlay_event && |
c5aa993b JM |
6926 | b->number >= 0) |
6927 | breaks_to_delete = 1; | |
6928 | } | |
c906108c SS |
6929 | |
6930 | /* Ask user only if there are some breakpoints to delete. */ | |
6931 | if (!from_tty | |
6932 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6933 | { | |
c5aa993b JM |
6934 | ALL_BREAKPOINTS_SAFE (b, temp) |
6935 | { | |
6936 | if (b->type != bp_call_dummy && | |
6937 | b->type != bp_shlib_event && | |
c4093a6a | 6938 | b->type != bp_thread_event && |
1900040c | 6939 | b->type != bp_overlay_event && |
c5aa993b JM |
6940 | b->number >= 0) |
6941 | delete_breakpoint (b); | |
6942 | } | |
c906108c SS |
6943 | } |
6944 | } | |
6945 | else | |
6946 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6947 | } | |
6948 | ||
6949 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6950 | The value we return ends up being the return value from catch_errors. | |
6951 | Unused in this case. */ | |
6952 | ||
6953 | static int | |
4efb68b1 | 6954 | breakpoint_re_set_one (void *bint) |
c906108c | 6955 | { |
53a5351d JM |
6956 | /* get past catch_errs */ |
6957 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6958 | struct value *mark; |
6959 | int i; | |
84acb35a JJ |
6960 | int not_found; |
6961 | int *not_found_ptr = NULL; | |
c906108c SS |
6962 | struct symtabs_and_lines sals; |
6963 | char *s; | |
b5de0fa7 | 6964 | enum enable_state save_enable; |
c906108c SS |
6965 | |
6966 | switch (b->type) | |
6967 | { | |
6968 | case bp_none: | |
53a5351d JM |
6969 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6970 | b->number); | |
c906108c SS |
6971 | return 0; |
6972 | case bp_breakpoint: | |
6973 | case bp_hardware_breakpoint: | |
6974 | case bp_catch_load: | |
6975 | case bp_catch_unload: | |
6976 | if (b->addr_string == NULL) | |
6977 | { | |
6978 | /* Anything without a string can't be re-set. */ | |
6979 | delete_breakpoint (b); | |
6980 | return 0; | |
6981 | } | |
b18c45ed AC |
6982 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
6983 | ||
6984 | ``And a hack it is, although Apple's Darwin version of GDB | |
6985 | contains an almost identical hack to implement a "future | |
6986 | break" command. It seems to work in many real world cases, | |
6987 | but it is easy to come up with a test case where the patch | |
6988 | doesn't help at all.'' | |
6989 | ||
6990 | ``It seems that the way GDB implements breakpoints - in - | |
6991 | shared - libraries was designed for a.out shared library | |
6992 | systems (SunOS 4) where shared libraries were loaded at a | |
6993 | fixed address in memory. Since ELF shared libraries can (and | |
6994 | will) be loaded at any address in memory, things break. | |
6995 | Fixing this is not trivial. Therefore, I'm not sure whether | |
6996 | we should add this hack to the branch only. I cannot | |
6997 | guarantee that things will be fixed on the trunk in the near | |
6998 | future.'' | |
6999 | ||
7000 | In case we have a problem, disable this breakpoint. We'll | |
7001 | restore its status if we succeed. Don't disable a | |
7002 | shlib_disabled breakpoint though. There's a fair chance we | |
7003 | can't re-set it if the shared library it's in hasn't been | |
7004 | loaded yet. */ | |
0101ce28 JJ |
7005 | |
7006 | if (b->pending) | |
7007 | break; | |
7008 | ||
b5de0fa7 | 7009 | save_enable = b->enable_state; |
b18c45ed AC |
7010 | if (b->enable_state != bp_shlib_disabled) |
7011 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7012 | else |
7013 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7014 | see an error message if it is not found since we will expect | |
7015 | this to occur until the shared library is finally reloaded. | |
7016 | We accomplish this by giving decode_line_1 a pointer to use | |
7017 | for silent notification that the symbol is not found. */ | |
7018 | not_found_ptr = ¬_found; | |
c906108c SS |
7019 | |
7020 | set_language (b->language); | |
7021 | input_radix = b->input_radix; | |
7022 | s = b->addr_string; | |
84acb35a JJ |
7023 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7024 | not_found_ptr); | |
c906108c SS |
7025 | for (i = 0; i < sals.nelts; i++) |
7026 | { | |
7027 | resolve_sal_pc (&sals.sals[i]); | |
7028 | ||
7029 | /* Reparse conditions, they might contain references to the | |
7030 | old symtab. */ | |
7031 | if (b->cond_string != NULL) | |
7032 | { | |
7033 | s = b->cond_string; | |
7034 | if (b->cond) | |
fad0733a DJ |
7035 | { |
7036 | xfree (b->cond); | |
7037 | /* Avoid re-freeing b->exp if an error during the call | |
7038 | to parse_exp_1. */ | |
7039 | b->cond = NULL; | |
7040 | } | |
c906108c SS |
7041 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7042 | } | |
7043 | ||
c5aa993b | 7044 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7045 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7046 | /* ...or new and old breakpoints both have source files, and |
7047 | the source file name or the line number changes... */ | |
c906108c SS |
7048 | || (b->source_file != NULL |
7049 | && sals.sals[i].symtab != NULL | |
6314a349 | 7050 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7051 | || b->line_number != sals.sals[i].line) |
c906108c | 7052 | ) |
c5aa993b JM |
7053 | /* ...or we switch between having a source file and not having |
7054 | one. */ | |
7055 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7056 | ) | |
c906108c SS |
7057 | { |
7058 | if (b->source_file != NULL) | |
b8c9b27d | 7059 | xfree (b->source_file); |
c906108c SS |
7060 | if (sals.sals[i].symtab == NULL) |
7061 | b->source_file = NULL; | |
7062 | else | |
7063 | b->source_file = | |
7064 | savestring (sals.sals[i].symtab->filename, | |
7065 | strlen (sals.sals[i].symtab->filename)); | |
7066 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7067 | b->loc->requested_address = sals.sals[i].pc; |
7068 | b->loc->address | |
88f7da05 KB |
7069 | = adjust_breakpoint_address (b->loc->requested_address, |
7070 | b->type); | |
c906108c | 7071 | |
c5aa993b | 7072 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7073 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7074 | breakpoints. */ |
c906108c SS |
7075 | |
7076 | mention (b); | |
7077 | ||
7078 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7079 | rather than once for every breakpoint. */ |
c906108c SS |
7080 | breakpoints_changed (); |
7081 | } | |
cf3a9e5b | 7082 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7083 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7084 | |
7085 | ||
c5aa993b | 7086 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7087 | can be used. */ |
9f60f21b | 7088 | check_duplicates (b); |
c906108c SS |
7089 | |
7090 | } | |
b8c9b27d | 7091 | xfree (sals.sals); |
c906108c SS |
7092 | break; |
7093 | ||
7094 | case bp_watchpoint: | |
7095 | case bp_hardware_watchpoint: | |
7096 | case bp_read_watchpoint: | |
7097 | case bp_access_watchpoint: | |
7098 | innermost_block = NULL; | |
53a5351d JM |
7099 | /* The issue arises of what context to evaluate this in. The |
7100 | same one as when it was set, but what does that mean when | |
7101 | symbols have been re-read? We could save the filename and | |
7102 | functionname, but if the context is more local than that, the | |
7103 | best we could do would be something like how many levels deep | |
7104 | and which index at that particular level, but that's going to | |
7105 | be less stable than filenames or function names. */ | |
7106 | ||
c906108c SS |
7107 | /* So for now, just use a global context. */ |
7108 | if (b->exp) | |
a355c7de AC |
7109 | { |
7110 | xfree (b->exp); | |
7111 | /* Avoid re-freeing b->exp if an error during the call to | |
7112 | parse_expression. */ | |
7113 | b->exp = NULL; | |
7114 | } | |
c906108c SS |
7115 | b->exp = parse_expression (b->exp_string); |
7116 | b->exp_valid_block = innermost_block; | |
7117 | mark = value_mark (); | |
7118 | if (b->val) | |
a355c7de AC |
7119 | { |
7120 | value_free (b->val); | |
7121 | /* Avoid re-freeing b->val if an error during the call to | |
7122 | evaluate_expression. */ | |
7123 | b->val = NULL; | |
7124 | } | |
c906108c SS |
7125 | b->val = evaluate_expression (b->exp); |
7126 | release_value (b->val); | |
468d015d | 7127 | if (VALUE_LAZY (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7128 | value_fetch_lazy (b->val); |
7129 | ||
7130 | if (b->cond_string != NULL) | |
7131 | { | |
7132 | s = b->cond_string; | |
7133 | if (b->cond) | |
a355c7de AC |
7134 | { |
7135 | xfree (b->cond); | |
7136 | /* Avoid re-freeing b->exp if an error during the call | |
7137 | to parse_exp_1. */ | |
7138 | b->cond = NULL; | |
7139 | } | |
c5aa993b | 7140 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7141 | } |
468d015d | 7142 | if (breakpoint_enabled (b)) |
c906108c SS |
7143 | mention (b); |
7144 | value_free_to_mark (mark); | |
7145 | break; | |
c5aa993b JM |
7146 | case bp_catch_catch: |
7147 | case bp_catch_throw: | |
c906108c | 7148 | break; |
c5aa993b JM |
7149 | /* We needn't really do anything to reset these, since the mask |
7150 | that requests them is unaffected by e.g., new libraries being | |
7151 | loaded. */ | |
c906108c SS |
7152 | case bp_catch_fork: |
7153 | case bp_catch_vfork: | |
7154 | case bp_catch_exec: | |
7155 | break; | |
c5aa993b | 7156 | |
c906108c SS |
7157 | default: |
7158 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7159 | /* fall through */ | |
1900040c MS |
7160 | /* Delete longjmp and overlay event breakpoints; they will be |
7161 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7162 | case bp_longjmp: |
7163 | case bp_longjmp_resume: | |
1900040c | 7164 | case bp_overlay_event: |
c906108c SS |
7165 | delete_breakpoint (b); |
7166 | break; | |
7167 | ||
c5aa993b JM |
7168 | /* This breakpoint is special, it's set up when the inferior |
7169 | starts and we really don't want to touch it. */ | |
c906108c SS |
7170 | case bp_shlib_event: |
7171 | ||
c4093a6a JM |
7172 | /* Like bp_shlib_event, this breakpoint type is special. |
7173 | Once it is set up, we do not want to touch it. */ | |
7174 | case bp_thread_event: | |
7175 | ||
c5aa993b JM |
7176 | /* Keep temporary breakpoints, which can be encountered when we step |
7177 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7178 | Otherwise these should have been blown away via the cleanup chain | |
7179 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7180 | case bp_until: |
7181 | case bp_finish: | |
7182 | case bp_watchpoint_scope: | |
7183 | case bp_call_dummy: | |
7184 | case bp_step_resume: | |
7185 | break; | |
7186 | } | |
7187 | ||
7188 | return 0; | |
7189 | } | |
7190 | ||
7191 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7192 | void | |
fba45db2 | 7193 | breakpoint_re_set (void) |
c906108c SS |
7194 | { |
7195 | struct breakpoint *b, *temp; | |
7196 | enum language save_language; | |
7197 | int save_input_radix; | |
c5aa993b | 7198 | |
c906108c SS |
7199 | save_language = current_language->la_language; |
7200 | save_input_radix = input_radix; | |
7201 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7202 | { |
53a5351d | 7203 | /* Format possible error msg */ |
9ebf4acf AC |
7204 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7205 | b->number); | |
7206 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7207 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7208 | do_cleanups (cleanups); |
c5aa993b | 7209 | } |
c906108c SS |
7210 | set_language (save_language); |
7211 | input_radix = save_input_radix; | |
7212 | ||
9df628e0 RE |
7213 | if (GET_LONGJMP_TARGET_P ()) |
7214 | { | |
7215 | create_longjmp_breakpoint ("longjmp"); | |
7216 | create_longjmp_breakpoint ("_longjmp"); | |
7217 | create_longjmp_breakpoint ("siglongjmp"); | |
7218 | create_longjmp_breakpoint ("_siglongjmp"); | |
7219 | create_longjmp_breakpoint (NULL); | |
7220 | } | |
1900040c MS |
7221 | |
7222 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7223 | } |
7224 | \f | |
c906108c SS |
7225 | /* Reset the thread number of this breakpoint: |
7226 | ||
7227 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7228 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7229 | void |
fba45db2 | 7230 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7231 | { |
7232 | if (b->thread != -1) | |
7233 | { | |
39f77062 KB |
7234 | if (in_thread_list (inferior_ptid)) |
7235 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7236 | } |
7237 | } | |
7238 | ||
03ac34d5 MS |
7239 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7240 | If from_tty is nonzero, it prints a message to that effect, | |
7241 | which ends with a period (no newline). */ | |
7242 | ||
c906108c | 7243 | void |
fba45db2 | 7244 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7245 | { |
52f0bd74 | 7246 | struct breakpoint *b; |
c906108c SS |
7247 | |
7248 | if (count < 0) | |
7249 | count = 0; | |
7250 | ||
7251 | ALL_BREAKPOINTS (b) | |
7252 | if (b->number == bptnum) | |
c5aa993b JM |
7253 | { |
7254 | b->ignore_count = count; | |
221ea385 KS |
7255 | if (from_tty) |
7256 | { | |
7257 | if (count == 0) | |
7258 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7259 | bptnum); | |
7260 | else if (count == 1) | |
7261 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7262 | bptnum); | |
7263 | else | |
7264 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7265 | count, bptnum); | |
7266 | } | |
c5aa993b | 7267 | breakpoints_changed (); |
221ea385 | 7268 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7269 | return; |
7270 | } | |
c906108c SS |
7271 | |
7272 | error ("No breakpoint number %d.", bptnum); | |
7273 | } | |
7274 | ||
7275 | /* Clear the ignore counts of all breakpoints. */ | |
7276 | void | |
fba45db2 | 7277 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7278 | { |
7279 | struct breakpoint *b; | |
7280 | ||
7281 | ALL_BREAKPOINTS (b) | |
7282 | b->ignore_count = 0; | |
7283 | } | |
7284 | ||
7285 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7286 | ||
7287 | static void | |
fba45db2 | 7288 | ignore_command (char *args, int from_tty) |
c906108c SS |
7289 | { |
7290 | char *p = args; | |
52f0bd74 | 7291 | int num; |
c906108c SS |
7292 | |
7293 | if (p == 0) | |
7294 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7295 | |
c906108c | 7296 | num = get_number (&p); |
5c44784c JM |
7297 | if (num == 0) |
7298 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7299 | if (*p == 0) |
7300 | error ("Second argument (specified ignore-count) is missing."); | |
7301 | ||
7302 | set_ignore_count (num, | |
7303 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7304 | from_tty); | |
221ea385 KS |
7305 | if (from_tty) |
7306 | printf_filtered ("\n"); | |
c906108c SS |
7307 | } |
7308 | \f | |
7309 | /* Call FUNCTION on each of the breakpoints | |
7310 | whose numbers are given in ARGS. */ | |
7311 | ||
7312 | static void | |
831662b3 | 7313 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7314 | { |
52f0bd74 | 7315 | char *p = args; |
c906108c | 7316 | char *p1; |
52f0bd74 AC |
7317 | int num; |
7318 | struct breakpoint *b, *tmp; | |
11cf8741 | 7319 | int match; |
c906108c SS |
7320 | |
7321 | if (p == 0) | |
7322 | error_no_arg ("one or more breakpoint numbers"); | |
7323 | ||
7324 | while (*p) | |
7325 | { | |
11cf8741 | 7326 | match = 0; |
c906108c | 7327 | p1 = p; |
c5aa993b | 7328 | |
5c44784c JM |
7329 | num = get_number_or_range (&p1); |
7330 | if (num == 0) | |
c5aa993b | 7331 | { |
5c44784c JM |
7332 | warning ("bad breakpoint number at or near '%s'", p); |
7333 | } | |
7334 | else | |
7335 | { | |
7336 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7337 | if (b->number == num) | |
7338 | { | |
7339 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7340 | match = 1; |
5c44784c JM |
7341 | function (b); |
7342 | if (related_breakpoint) | |
7343 | function (related_breakpoint); | |
11cf8741 | 7344 | break; |
5c44784c | 7345 | } |
11cf8741 JM |
7346 | if (match == 0) |
7347 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7348 | } |
c906108c SS |
7349 | p = p1; |
7350 | } | |
7351 | } | |
7352 | ||
1900040c MS |
7353 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7354 | If from_tty is nonzero, it prints a message to that effect, | |
7355 | which ends with a period (no newline). */ | |
7356 | ||
c906108c | 7357 | void |
fba45db2 | 7358 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7359 | { |
7360 | /* Never disable a watchpoint scope breakpoint; we want to | |
7361 | hit them when we leave scope so we can delete both the | |
7362 | watchpoint and its scope breakpoint at that time. */ | |
7363 | if (bpt->type == bp_watchpoint_scope) | |
7364 | return; | |
7365 | ||
c2c6d25f | 7366 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7367 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7368 | return; |
7369 | ||
b5de0fa7 | 7370 | bpt->enable_state = bp_disabled; |
c906108c | 7371 | |
9f60f21b | 7372 | check_duplicates (bpt); |
c906108c | 7373 | |
9a4105ab AC |
7374 | if (deprecated_modify_breakpoint_hook) |
7375 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7376 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7377 | } |
7378 | ||
c906108c | 7379 | static void |
fba45db2 | 7380 | disable_command (char *args, int from_tty) |
c906108c | 7381 | { |
52f0bd74 | 7382 | struct breakpoint *bpt; |
c906108c SS |
7383 | if (args == 0) |
7384 | ALL_BREAKPOINTS (bpt) | |
7385 | switch (bpt->type) | |
c5aa993b JM |
7386 | { |
7387 | case bp_none: | |
53a5351d JM |
7388 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7389 | bpt->number); | |
c5aa993b JM |
7390 | continue; |
7391 | case bp_breakpoint: | |
7392 | case bp_catch_load: | |
7393 | case bp_catch_unload: | |
7394 | case bp_catch_fork: | |
7395 | case bp_catch_vfork: | |
7396 | case bp_catch_exec: | |
7397 | case bp_catch_catch: | |
7398 | case bp_catch_throw: | |
7399 | case bp_hardware_breakpoint: | |
7400 | case bp_watchpoint: | |
7401 | case bp_hardware_watchpoint: | |
7402 | case bp_read_watchpoint: | |
7403 | case bp_access_watchpoint: | |
7404 | disable_breakpoint (bpt); | |
7405 | default: | |
7406 | continue; | |
7407 | } | |
c906108c SS |
7408 | else |
7409 | map_breakpoint_numbers (args, disable_breakpoint); | |
7410 | } | |
7411 | ||
7412 | static void | |
fba45db2 | 7413 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7414 | { |
c906108c SS |
7415 | int target_resources_ok, other_type_used; |
7416 | struct value *mark; | |
7417 | ||
7418 | if (bpt->type == bp_hardware_breakpoint) | |
7419 | { | |
7420 | int i; | |
c5aa993b | 7421 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7422 | target_resources_ok = |
7423 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7424 | i + 1, 0); | |
c906108c | 7425 | if (target_resources_ok == 0) |
c5aa993b | 7426 | error ("No hardware breakpoint support in the target."); |
c906108c | 7427 | else if (target_resources_ok < 0) |
c5aa993b | 7428 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7429 | } |
7430 | ||
0101ce28 | 7431 | if (bpt->pending) |
c906108c | 7432 | { |
0101ce28 | 7433 | if (bpt->enable_state != bp_enabled) |
c906108c | 7434 | { |
0101ce28 JJ |
7435 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7436 | is resolvable since shared libraries could have been loaded | |
7437 | after the breakpoint was disabled. */ | |
7438 | breakpoints_changed (); | |
7439 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7440 | { |
0101ce28 | 7441 | delete_breakpoint (bpt); |
c906108c SS |
7442 | return; |
7443 | } | |
0101ce28 JJ |
7444 | bpt->enable_state = bp_enabled; |
7445 | bpt->disposition = disposition; | |
c906108c | 7446 | } |
0101ce28 JJ |
7447 | } |
7448 | else /* Not a pending breakpoint. */ | |
7449 | { | |
7450 | if (bpt->enable_state != bp_permanent) | |
7451 | bpt->enable_state = bp_enabled; | |
7452 | bpt->disposition = disposition; | |
7453 | check_duplicates (bpt); | |
7454 | breakpoints_changed (); | |
7455 | ||
7456 | if (bpt->type == bp_watchpoint || | |
7457 | bpt->type == bp_hardware_watchpoint || | |
7458 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7459 | bpt->type == bp_access_watchpoint) |
7460 | { | |
7789d0fa AC |
7461 | struct frame_id saved_frame_id; |
7462 | ||
b04f3ab4 | 7463 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7464 | if (bpt->exp_valid_block != NULL) |
7465 | { | |
7466 | struct frame_info *fr = | |
7467 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7468 | if (fr == NULL) | |
7469 | { | |
7470 | printf_filtered ("\ | |
7471 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7472 | is valid is not currently in scope.\n", bpt->number); | |
7473 | bpt->enable_state = bp_disabled; | |
7474 | return; | |
7475 | } | |
0101ce28 JJ |
7476 | select_frame (fr); |
7477 | } | |
7478 | ||
7479 | value_free (bpt->val); | |
7480 | mark = value_mark (); | |
7481 | bpt->val = evaluate_expression (bpt->exp); | |
7482 | release_value (bpt->val); | |
7483 | if (VALUE_LAZY (bpt->val)) | |
7484 | value_fetch_lazy (bpt->val); | |
7485 | ||
7486 | if (bpt->type == bp_hardware_watchpoint || | |
7487 | bpt->type == bp_read_watchpoint || | |
7488 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7489 | { |
0101ce28 JJ |
7490 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7491 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7492 | ||
7493 | /* Hack around 'unused var' error for some targets here */ | |
7494 | (void) mem_cnt, i; | |
7495 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7496 | bpt->type, i + mem_cnt, other_type_used); | |
7497 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7498 | bp_watchpoint in the following condition */ | |
7499 | if (target_resources_ok < 0) | |
7500 | { | |
7501 | printf_filtered ("\ | |
c906108c SS |
7502 | Cannot enable watchpoint %d because target watch resources\n\ |
7503 | have been allocated for other watchpoints.\n", bpt->number); | |
0101ce28 JJ |
7504 | bpt->enable_state = bp_disabled; |
7505 | value_free_to_mark (mark); | |
7506 | return; | |
7507 | } | |
c5aa993b | 7508 | } |
0101ce28 | 7509 | |
7789d0fa | 7510 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7511 | value_free_to_mark (mark); |
c5aa993b | 7512 | } |
c906108c | 7513 | } |
0101ce28 | 7514 | |
9a4105ab AC |
7515 | if (deprecated_modify_breakpoint_hook) |
7516 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7517 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7518 | } |
7519 | ||
7520 | void | |
fba45db2 | 7521 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7522 | { |
7523 | do_enable_breakpoint (bpt, bpt->disposition); | |
7524 | } | |
7525 | ||
7526 | /* The enable command enables the specified breakpoints (or all defined | |
7527 | breakpoints) so they once again become (or continue to be) effective | |
7528 | in stopping the inferior. */ | |
7529 | ||
c906108c | 7530 | static void |
fba45db2 | 7531 | enable_command (char *args, int from_tty) |
c906108c | 7532 | { |
52f0bd74 | 7533 | struct breakpoint *bpt; |
c906108c SS |
7534 | if (args == 0) |
7535 | ALL_BREAKPOINTS (bpt) | |
7536 | switch (bpt->type) | |
c5aa993b JM |
7537 | { |
7538 | case bp_none: | |
53a5351d JM |
7539 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7540 | bpt->number); | |
c5aa993b JM |
7541 | continue; |
7542 | case bp_breakpoint: | |
7543 | case bp_catch_load: | |
7544 | case bp_catch_unload: | |
7545 | case bp_catch_fork: | |
7546 | case bp_catch_vfork: | |
7547 | case bp_catch_exec: | |
7548 | case bp_catch_catch: | |
7549 | case bp_catch_throw: | |
7550 | case bp_hardware_breakpoint: | |
7551 | case bp_watchpoint: | |
7552 | case bp_hardware_watchpoint: | |
7553 | case bp_read_watchpoint: | |
7554 | case bp_access_watchpoint: | |
7555 | enable_breakpoint (bpt); | |
7556 | default: | |
7557 | continue; | |
7558 | } | |
c906108c SS |
7559 | else |
7560 | map_breakpoint_numbers (args, enable_breakpoint); | |
7561 | } | |
7562 | ||
7563 | static void | |
fba45db2 | 7564 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7565 | { |
b5de0fa7 | 7566 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7567 | } |
7568 | ||
c906108c | 7569 | static void |
fba45db2 | 7570 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7571 | { |
7572 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7573 | } | |
7574 | ||
7575 | static void | |
fba45db2 | 7576 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7577 | { |
b5de0fa7 | 7578 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7579 | } |
7580 | ||
c906108c | 7581 | static void |
fba45db2 | 7582 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7583 | { |
7584 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7585 | } | |
7586 | \f | |
fa8d40ab JJ |
7587 | static void |
7588 | set_breakpoint_cmd (char *args, int from_tty) | |
7589 | { | |
7590 | } | |
7591 | ||
7592 | static void | |
7593 | show_breakpoint_cmd (char *args, int from_tty) | |
7594 | { | |
7595 | } | |
7596 | ||
c906108c SS |
7597 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7598 | ||
7599 | struct symtabs_and_lines | |
fba45db2 | 7600 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7601 | { |
7602 | struct symtabs_and_lines sals; | |
7603 | if (string == 0) | |
7604 | error ("Empty line specification."); | |
7605 | if (default_breakpoint_valid) | |
7606 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7607 | default_breakpoint_symtab, |
7608 | default_breakpoint_line, | |
68219205 | 7609 | (char ***) NULL, NULL); |
c906108c SS |
7610 | else |
7611 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7612 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c SS |
7613 | if (*string) |
7614 | error ("Junk at end of line specification: %s", string); | |
7615 | return sals; | |
7616 | } | |
7617 | \f | |
7618 | void | |
fba45db2 | 7619 | _initialize_breakpoint (void) |
c906108c | 7620 | { |
fa8d40ab JJ |
7621 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7622 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7623 | struct cmd_list_element *c; |
7624 | ||
84acb35a JJ |
7625 | #ifdef SOLIB_ADD |
7626 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); | |
7627 | #endif | |
7628 | ||
c906108c SS |
7629 | breakpoint_chain = 0; |
7630 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7631 | before a breakpoint is set. */ | |
7632 | breakpoint_count = 0; | |
7633 | ||
7634 | add_com ("ignore", class_breakpoint, ignore_command, | |
7635 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7636 | Usage is `ignore N COUNT'."); | |
7637 | if (xdb_commands) | |
c5aa993b | 7638 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7639 | |
7640 | add_com ("commands", class_breakpoint, commands_command, | |
7641 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7642 | Give breakpoint number as argument after \"commands\".\n\ | |
7643 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7644 | The commands themselves follow starting on the next line.\n\ | |
7645 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7646 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7647 | then no output is printed when it is hit, except what the commands print."); | |
7648 | ||
7649 | add_com ("condition", class_breakpoint, condition_command, | |
7650 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7651 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
d4654627 | 7652 | expression to be evaluated whenever breakpoint N is reached."); |
c906108c | 7653 | |
c94fdfd0 EZ |
7654 | c = add_com ("tbreak", class_breakpoint, tbreak_command, |
7655 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7656 | Like \"break\" except the breakpoint is only temporary,\n\ |
7657 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7658 | by using \"enable delete\" on the breakpoint number."); | |
5ba2abeb | 7659 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7660 | |
c94fdfd0 EZ |
7661 | c = add_com ("hbreak", class_breakpoint, hbreak_command, |
7662 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7663 | Like \"break\" except the breakpoint requires hardware support,\n\ |
7664 | some target hardware may not have this support."); | |
5ba2abeb | 7665 | set_cmd_completer (c, location_completer); |
c906108c | 7666 | |
c94fdfd0 EZ |
7667 | c = add_com ("thbreak", class_breakpoint, thbreak_command, |
7668 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
c906108c SS |
7669 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
7670 | so it will be deleted when hit."); | |
5ba2abeb | 7671 | set_cmd_completer (c, location_completer); |
c906108c SS |
7672 | |
7673 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7674 | "Enable some breakpoints.\n\ | |
7675 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7676 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7677 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7678 | With a subcommand you can enable temporarily.", | |
7679 | &enablelist, "enable ", 1, &cmdlist); | |
7680 | if (xdb_commands) | |
c5aa993b JM |
7681 | add_com ("ab", class_breakpoint, enable_command, |
7682 | "Enable some breakpoints.\n\ | |
c906108c SS |
7683 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7684 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7685 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7686 | With a subcommand you can enable temporarily."); | |
7687 | ||
7688 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7689 | ||
7690 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7691 | "Enable some breakpoints.\n\ |
c906108c SS |
7692 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7693 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7694 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7695 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7696 | |
7697 | add_cmd ("once", no_class, enable_once_command, | |
7698 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7699 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7700 | &enablebreaklist); | |
7701 | ||
7702 | add_cmd ("delete", no_class, enable_delete_command, | |
7703 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7704 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7705 | &enablebreaklist); | |
7706 | ||
7707 | add_cmd ("delete", no_class, enable_delete_command, | |
7708 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7709 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7710 | &enablelist); | |
7711 | ||
7712 | add_cmd ("once", no_class, enable_once_command, | |
7713 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7714 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7715 | &enablelist); | |
7716 | ||
7717 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7718 | "Disable some breakpoints.\n\ |
c906108c SS |
7719 | Arguments are breakpoint numbers with spaces in between.\n\ |
7720 | To disable all breakpoints, give no argument.\n\ | |
7721 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7722 | &disablelist, "disable ", 1, &cmdlist); | |
7723 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7724 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7725 | if (xdb_commands) | |
c5aa993b JM |
7726 | add_com ("sb", class_breakpoint, disable_command, |
7727 | "Disable some breakpoints.\n\ | |
c906108c SS |
7728 | Arguments are breakpoint numbers with spaces in between.\n\ |
7729 | To disable all breakpoints, give no argument.\n\ | |
7730 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7731 | ||
7732 | add_cmd ("breakpoints", class_alias, disable_command, | |
7733 | "Disable some breakpoints.\n\ | |
7734 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7735 | To disable all breakpoints, give no argument.\n\ | |
7736 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7737 | This command may be abbreviated \"disable\".", | |
7738 | &disablelist); | |
7739 | ||
7740 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7741 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7742 | Arguments are breakpoint numbers with spaces in between.\n\ |
7743 | To delete all breakpoints, give no argument.\n\ | |
7744 | \n\ | |
7745 | Also a prefix command for deletion of other GDB objects.\n\ | |
7746 | The \"unset\" command is also an alias for \"delete\".", | |
7747 | &deletelist, "delete ", 1, &cmdlist); | |
7748 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7749 | if (xdb_commands) | |
7750 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7751 | "Delete some breakpoints.\n\ |
c906108c SS |
7752 | Arguments are breakpoint numbers with spaces in between.\n\ |
7753 | To delete all breakpoints, give no argument.\n"); | |
7754 | ||
7755 | add_cmd ("breakpoints", class_alias, delete_command, | |
7756 | "Delete some breakpoints or auto-display expressions.\n\ | |
7757 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7758 | To delete all breakpoints, give no argument.\n\ | |
7759 | This command may be abbreviated \"delete\".", | |
7760 | &deletelist); | |
7761 | ||
7762 | add_com ("clear", class_breakpoint, clear_command, | |
7763 | concat ("Clear breakpoint at specified line or function.\n\ | |
7764 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7765 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7766 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7767 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7768 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7769 | is executing in.\n\ |
7770 | \n\ | |
7771 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7772 | ||
c94fdfd0 EZ |
7773 | c = add_com ("break", class_breakpoint, break_command, |
7774 | concat ("Set breakpoint at specified line or function.\n\ | |
c906108c SS |
7775 | Argument may be line number, function name, or \"*\" and an address.\n\ |
7776 | If line number is specified, break at start of code for that line.\n\ | |
7777 | If function is specified, break at start of code for that function.\n\ | |
7778 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7779 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7780 | This is useful for breaking on return to a stack frame.\n\ |
7781 | \n\ | |
7782 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7783 | \n\ | |
7784 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
5ba2abeb | 7785 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7786 | |
c906108c SS |
7787 | add_com_alias ("b", "break", class_run, 1); |
7788 | add_com_alias ("br", "break", class_run, 1); | |
7789 | add_com_alias ("bre", "break", class_run, 1); | |
7790 | add_com_alias ("brea", "break", class_run, 1); | |
7791 | ||
502fd408 | 7792 | if (xdb_commands) |
c906108c SS |
7793 | { |
7794 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7795 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
7796 | } |
7797 | ||
7798 | if (dbx_commands) | |
7799 | { | |
c5aa993b JM |
7800 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7801 | "Break in function/address or break at a line in the current file.", | |
7802 | &stoplist, "stop ", 1, &cmdlist); | |
7803 | add_cmd ("in", class_breakpoint, stopin_command, | |
7804 | "Break in function or address.\n", &stoplist); | |
7805 | add_cmd ("at", class_breakpoint, stopat_command, | |
7806 | "Break at a line in the current file.\n", &stoplist); | |
7807 | add_com ("status", class_info, breakpoints_info, | |
7808 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7809 | The \"Type\" column indicates one of:\n\ |
7810 | \tbreakpoint - normal breakpoint\n\ | |
7811 | \twatchpoint - watchpoint\n\ | |
7812 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7813 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7814 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7815 | address and file/line number respectively.\n\n", | |
c5aa993b | 7816 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7817 | are set to the address of the last breakpoint listed.\n\n\ |
7818 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7819 | breakpoint set.", NULL)); | |
7820 | } | |
7821 | ||
7822 | add_info ("breakpoints", breakpoints_info, | |
7823 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7824 | The \"Type\" column indicates one of:\n\ | |
7825 | \tbreakpoint - normal breakpoint\n\ | |
7826 | \twatchpoint - watchpoint\n\ | |
7827 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7828 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7829 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7830 | address and file/line number respectively.\n\n", | |
c5aa993b | 7831 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7832 | are set to the address of the last breakpoint listed.\n\n\ |
7833 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7834 | breakpoint set.", NULL)); | |
7835 | ||
7836 | if (xdb_commands) | |
c5aa993b JM |
7837 | add_com ("lb", class_breakpoint, breakpoints_info, |
7838 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7839 | The \"Type\" column indicates one of:\n\ |
7840 | \tbreakpoint - normal breakpoint\n\ | |
7841 | \twatchpoint - watchpoint\n\ | |
7842 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7843 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7844 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7845 | address and file/line number respectively.\n\n", | |
c5aa993b | 7846 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7847 | are set to the address of the last breakpoint listed.\n\n\ |
7848 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7849 | breakpoint set.", NULL)); | |
7850 | ||
c906108c | 7851 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7852 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7853 | The \"Type\" column indicates one of:\n\ |
7854 | \tbreakpoint - normal breakpoint\n\ | |
7855 | \twatchpoint - watchpoint\n\ | |
7856 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7857 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7858 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7859 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7860 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7861 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7862 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7863 | address and file/line number respectively.\n\n", | |
c5aa993b | 7864 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7865 | are set to the address of the last breakpoint listed.\n\n\ |
7866 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7867 | breakpoint set.", NULL), | |
7868 | &maintenanceinfolist); | |
7869 | ||
c906108c | 7870 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7871 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7872 | Raised signals may be caught:\n\ |
7873 | \tcatch signal - all signals\n\ | |
7874 | \tcatch signal <signame> - a particular signal\n\ | |
7875 | Raised exceptions may be caught:\n\ | |
7876 | \tcatch throw - all exceptions, when thrown\n\ | |
7877 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7878 | \tcatch catch - all exceptions, when caught\n\ | |
7879 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7880 | Thread or process events may be caught:\n\ | |
7881 | \tcatch thread_start - any threads, just after creation\n\ | |
7882 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7883 | \tcatch thread_join - any threads, just after joins\n\ | |
7884 | Process events may be caught:\n\ | |
7885 | \tcatch start - any processes, just after creation\n\ | |
7886 | \tcatch exit - any processes, just before expiration\n\ | |
7887 | \tcatch fork - calls to fork()\n\ | |
7888 | \tcatch vfork - calls to vfork()\n\ | |
7889 | \tcatch exec - calls to exec()\n\ | |
7890 | Dynamically-linked library events may be caught:\n\ | |
7891 | \tcatch load - loads of any library\n\ | |
7892 | \tcatch load <libname> - loads of a particular library\n\ | |
7893 | \tcatch unload - unloads of any library\n\ | |
7894 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7895 | The act of your program's execution stopping may also be caught:\n\ | |
7896 | \tcatch stop\n\n\ | |
7897 | C++ exceptions may be caught:\n\ | |
7898 | \tcatch throw - all exceptions, when thrown\n\ | |
7899 | \tcatch catch - all exceptions, when caught\n\ | |
7900 | \n\ | |
7901 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7902 | after a fork or vfork is caught.\n\n\ | |
7903 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7904 | |
c906108c | 7905 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7906 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7907 | Args like \"catch\" command.\n\ |
7908 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7909 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7910 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b | 7911 | |
c94fdfd0 EZ |
7912 | c = add_com ("watch", class_breakpoint, watch_command, |
7913 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7914 | A watchpoint stops execution of your program whenever the value of\n\ |
7915 | an expression changes."); | |
5ba2abeb | 7916 | set_cmd_completer (c, location_completer); |
c906108c | 7917 | |
c94fdfd0 EZ |
7918 | c = add_com ("rwatch", class_breakpoint, rwatch_command, |
7919 | "Set a read watchpoint for an expression.\n\ | |
c906108c SS |
7920 | A watchpoint stops execution of your program whenever the value of\n\ |
7921 | an expression is read."); | |
5ba2abeb | 7922 | set_cmd_completer (c, location_completer); |
c906108c | 7923 | |
c94fdfd0 EZ |
7924 | c = add_com ("awatch", class_breakpoint, awatch_command, |
7925 | "Set a watchpoint for an expression.\n\ | |
c906108c SS |
7926 | A watchpoint stops execution of your program whenever the value of\n\ |
7927 | an expression is either read or written."); | |
5ba2abeb | 7928 | set_cmd_completer (c, location_completer); |
c906108c SS |
7929 | |
7930 | add_info ("watchpoints", breakpoints_info, | |
7931 | "Synonym for ``info breakpoints''."); | |
7932 | ||
7933 | ||
7934 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7935 | (char *) &can_use_hw_watchpoints, |
7936 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7937 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7938 | such is available. (However, any hardware watchpoints that were\n\ | |
7939 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7940 | hardware.)", | |
c5aa993b | 7941 | &setlist); |
cb1a6d5f | 7942 | deprecated_add_show_from_set (c, &showlist); |
c906108c SS |
7943 | |
7944 | can_use_hw_watchpoints = 1; | |
fa8d40ab JJ |
7945 | |
7946 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, "\ | |
7947 | Breakpoint specific settings\n\ | |
7948 | Configure various breakpoint-specific variables such as\n\ | |
7949 | pending breakpoint behavior", | |
7950 | &breakpoint_set_cmdlist, "set breakpoint ", | |
7951 | 0/*allow-unknown*/, &setlist); | |
7952 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, "\ | |
7953 | Breakpoint specific settings\n\ | |
7954 | Configure various breakpoint-specific variables such as\n\ | |
7955 | pending breakpoint behavior", | |
7956 | &breakpoint_show_cmdlist, "show breakpoint ", | |
7957 | 0/*allow-unknown*/, &showlist); | |
7958 | ||
6e1d7d6c | 7959 | add_setshow_auto_boolean_cmd ("pending", no_class, &pending_break_support, "\ |
3b64bf98 AC |
7960 | Set debugger's behavior regarding pending breakpoints.", "\ |
7961 | Show debugger's behavior regarding pending breakpoints.", "\ | |
6e1d7d6c AC |
7962 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
7963 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
7964 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
3b64bf98 AC |
7965 | user-query to see if a pending breakpoint should be created.", "\ |
7966 | Debugger's behavior regarding pending breakpoints is %s.", | |
6e1d7d6c AC |
7967 | NULL, NULL, |
7968 | &breakpoint_set_cmdlist, | |
7969 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
7970 | |
7971 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
c906108c | 7972 | } |