Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
e74f0f02 | 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 | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, 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" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
c906108c | 59 | |
104c1213 | 60 | #include "gdb-events.h" |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
c906108c SS |
63 | /* Prototypes for local functions. */ |
64 | ||
c2c6d25f JM |
65 | static void until_break_command_continuation (struct continuation_arg *arg); |
66 | ||
a14ed312 | 67 | static void catch_command_1 (char *, int, int); |
c906108c | 68 | |
a14ed312 | 69 | static void enable_delete_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 72 | |
a14ed312 | 73 | static void enable_once_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 76 | |
a14ed312 | 77 | static void disable_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void enable_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 82 | |
a14ed312 | 83 | static void ignore_command (char *, int); |
c906108c | 84 | |
4efb68b1 | 85 | static int breakpoint_re_set_one (void *); |
c906108c | 86 | |
a14ed312 | 87 | static void clear_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void catch_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void watch_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 94 | |
0101ce28 | 95 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 96 | |
a14ed312 | 97 | static void mention (struct breakpoint *); |
c906108c | 98 | |
4d28f7a8 | 99 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 100 | |
9f60f21b | 101 | static void check_duplicates (struct breakpoint *); |
c906108c | 102 | |
76897487 KB |
103 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
104 | ||
88f7da05 KB |
105 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
106 | enum bptype bptype); | |
76897487 | 107 | |
d674a25c | 108 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void breakpoints_info (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void breakpoint_1 (int, int); |
c906108c | 113 | |
a14ed312 | 114 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 115 | |
4efb68b1 | 116 | static int breakpoint_cond_eval (void *); |
c906108c | 117 | |
4efb68b1 | 118 | static void cleanup_executing_breakpoints (void *); |
c906108c | 119 | |
a14ed312 | 120 | static void commands_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void condition_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static int get_number_trailer (char **, int); |
c906108c | 125 | |
a14ed312 | 126 | void set_breakpoint_count (int); |
c906108c | 127 | |
c5aa993b JM |
128 | typedef enum |
129 | { | |
130 | mark_inserted, | |
131 | mark_uninserted | |
132 | } | |
133 | insertion_state_t; | |
c906108c | 134 | |
0bde7532 | 135 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 136 | |
a14ed312 | 137 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
138 | |
139 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 140 | |
c5aa993b JM |
141 | typedef struct |
142 | { | |
143 | enum exception_event_kind kind; | |
b5de0fa7 | 144 | int enable_p; |
c5aa993b JM |
145 | } |
146 | args_for_catchpoint_enable; | |
c906108c | 147 | |
4efb68b1 | 148 | static int watchpoint_check (void *); |
c906108c | 149 | |
4efb68b1 | 150 | static int cover_target_enable_exception_callback (void *); |
c906108c | 151 | |
a14ed312 | 152 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 153 | |
a14ed312 | 154 | static void create_longjmp_breakpoint (char *); |
c906108c | 155 | |
1900040c MS |
156 | static void create_overlay_event_breakpoint (char *); |
157 | ||
a14ed312 | 158 | static int hw_breakpoint_used_count (void); |
c906108c | 159 | |
a14ed312 | 160 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 161 | |
a14ed312 | 162 | static void hbreak_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void thbreak_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void watch_command_1 (char *, int, int); |
c906108c | 167 | |
a14ed312 | 168 | static void rwatch_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void awatch_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 173 | |
a14ed312 KB |
174 | static void solib_load_unload_1 (char *hookname, |
175 | int tempflag, | |
176 | char *dll_pathname, | |
177 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 178 | |
a14ed312 KB |
179 | static void create_fork_vfork_event_catchpoint (int tempflag, |
180 | char *cond_string, | |
181 | enum bptype bp_kind); | |
7a292a7a | 182 | |
a14ed312 | 183 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 190 | |
a14ed312 | 191 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 192 | |
a14ed312 | 193 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 194 | |
d85310f7 MS |
195 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
196 | enum exception_event_kind ex_event, | |
197 | struct symtab_and_line *sal); | |
7a292a7a | 198 | |
d85310f7 MS |
199 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
200 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 201 | |
a14ed312 | 202 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 203 | |
a14ed312 | 204 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 205 | |
1aafd4da UW |
206 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
207 | ||
c906108c SS |
208 | /* Prototypes for exported functions. */ |
209 | ||
c906108c SS |
210 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
211 | if such is available. */ | |
212 | static int can_use_hw_watchpoints; | |
213 | ||
920d2a44 AC |
214 | static void |
215 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
216 | struct cmd_list_element *c, | |
217 | const char *value) | |
218 | { | |
219 | fprintf_filtered (file, _("\ | |
220 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
221 | value); | |
222 | } | |
223 | ||
fa8d40ab JJ |
224 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
225 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
226 | for unrecognized breakpoint locations. | |
227 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
228 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
229 | static void |
230 | show_pending_break_support (struct ui_file *file, int from_tty, | |
231 | struct cmd_list_element *c, | |
232 | const char *value) | |
233 | { | |
234 | fprintf_filtered (file, _("\ | |
235 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
236 | value); | |
237 | } | |
fa8d40ab | 238 | |
765dc015 VP |
239 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
240 | set with "break" but falling in read-only memory. | |
241 | If 0, gdb will warn about such breakpoints, but won't automatically | |
242 | use hardware breakpoints. */ | |
243 | static int automatic_hardware_breakpoints; | |
244 | static void | |
245 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
246 | struct cmd_list_element *c, | |
247 | const char *value) | |
248 | { | |
249 | fprintf_filtered (file, _("\ | |
250 | Automatic usage of hardware breakpoints is %s.\n"), | |
251 | value); | |
252 | } | |
253 | ||
254 | ||
a14ed312 | 255 | void _initialize_breakpoint (void); |
c906108c | 256 | |
c5aa993b | 257 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 258 | |
c906108c SS |
259 | /* Are we executing breakpoint commands? */ |
260 | static int executing_breakpoint_commands; | |
261 | ||
c02f5703 MS |
262 | /* Are overlay event breakpoints enabled? */ |
263 | static int overlay_events_enabled; | |
264 | ||
c906108c SS |
265 | /* Walk the following statement or block through all breakpoints. |
266 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
267 | breakpoint. */ | |
268 | ||
5c44784c | 269 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 270 | |
5c44784c JM |
271 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
272 | for (B = breakpoint_chain; \ | |
273 | B ? (TMP=B->next, 1): 0; \ | |
274 | B = TMP) | |
c906108c | 275 | |
7cc221ef DJ |
276 | /* Similar iterators for the low-level breakpoints. */ |
277 | ||
278 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
279 | ||
280 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
281 | for (B = bp_location_chain; \ | |
282 | B ? (TMP=B->next, 1): 0; \ | |
283 | B = TMP) | |
284 | ||
c906108c SS |
285 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
286 | ||
287 | int show_breakpoint_hit_counts = 1; | |
288 | ||
7cc221ef | 289 | /* Chains of all breakpoints defined. */ |
c906108c SS |
290 | |
291 | struct breakpoint *breakpoint_chain; | |
292 | ||
7cc221ef DJ |
293 | struct bp_location *bp_location_chain; |
294 | ||
c906108c SS |
295 | /* Number of last breakpoint made. */ |
296 | ||
297 | int breakpoint_count; | |
298 | ||
c5aa993b JM |
299 | /* Pointer to current exception event record */ |
300 | static struct exception_event_record *current_exception_event; | |
c906108c | 301 | |
c906108c SS |
302 | /* This function returns a pointer to the string representation of the |
303 | pathname of the dynamically-linked library that has just been | |
304 | loaded. | |
305 | ||
306 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
307 | or undefined results are guaranteed. | |
308 | ||
309 | This string's contents are only valid immediately after the | |
310 | inferior has stopped in the dynamic linker hook, and becomes | |
311 | invalid as soon as the inferior is continued. Clients should make | |
312 | a copy of this string if they wish to continue the inferior and | |
313 | then access the string. */ | |
314 | ||
315 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
316 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
317 | #endif | |
318 | ||
319 | /* This function returns a pointer to the string representation of the | |
320 | pathname of the dynamically-linked library that has just been | |
321 | unloaded. | |
322 | ||
323 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
324 | TRUE, or undefined results are guaranteed. | |
325 | ||
326 | This string's contents are only valid immediately after the | |
327 | inferior has stopped in the dynamic linker hook, and becomes | |
328 | invalid as soon as the inferior is continued. Clients should make | |
329 | a copy of this string if they wish to continue the inferior and | |
330 | then access the string. */ | |
331 | ||
332 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
333 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
334 | #endif | |
335 | ||
336 | /* This function is called by the "catch load" command. It allows the | |
337 | debugger to be notified by the dynamic linker when a specified | |
338 | library file (or any library file, if filename is NULL) is loaded. */ | |
339 | ||
340 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
341 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 342 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
343 | #endif |
344 | ||
345 | /* This function is called by the "catch unload" command. It allows | |
346 | the debugger to be notified by the dynamic linker when a specified | |
347 | library file (or any library file, if filename is NULL) is | |
348 | unloaded. */ | |
349 | ||
350 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 351 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 352 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
353 | #endif |
354 | ||
468d015d JJ |
355 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
356 | static int | |
357 | breakpoint_enabled (struct breakpoint *b) | |
358 | { | |
0101ce28 | 359 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
360 | } |
361 | ||
c906108c SS |
362 | /* Set breakpoint count to NUM. */ |
363 | ||
364 | void | |
fba45db2 | 365 | set_breakpoint_count (int num) |
c906108c SS |
366 | { |
367 | breakpoint_count = num; | |
368 | set_internalvar (lookup_internalvar ("bpnum"), | |
369 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
370 | } | |
371 | ||
372 | /* Used in run_command to zero the hit count when a new run starts. */ | |
373 | ||
374 | void | |
fba45db2 | 375 | clear_breakpoint_hit_counts (void) |
c906108c SS |
376 | { |
377 | struct breakpoint *b; | |
378 | ||
379 | ALL_BREAKPOINTS (b) | |
380 | b->hit_count = 0; | |
381 | } | |
382 | ||
383 | /* Default address, symtab and line to put a breakpoint at | |
384 | for "break" command with no arg. | |
385 | if default_breakpoint_valid is zero, the other three are | |
386 | not valid, and "break" with no arg is an error. | |
387 | ||
388 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
389 | ||
390 | int default_breakpoint_valid; | |
391 | CORE_ADDR default_breakpoint_address; | |
392 | struct symtab *default_breakpoint_symtab; | |
393 | int default_breakpoint_line; | |
394 | \f | |
395 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
396 | Advance *PP after the string and any trailing whitespace. | |
397 | ||
398 | Currently the string can either be a number or "$" followed by the name | |
399 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 400 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
401 | |
402 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
403 | |
404 | TRAILER is a character which can be found after the number; most | |
405 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 406 | static int |
fba45db2 | 407 | get_number_trailer (char **pp, int trailer) |
c906108c | 408 | { |
5c44784c | 409 | int retval = 0; /* default */ |
c906108c SS |
410 | char *p = *pp; |
411 | ||
412 | if (p == NULL) | |
413 | /* Empty line means refer to the last breakpoint. */ | |
414 | return breakpoint_count; | |
415 | else if (*p == '$') | |
416 | { | |
417 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 418 | to pass to lookup_internalvar(). */ |
c906108c SS |
419 | char *varname; |
420 | char *start = ++p; | |
278cd55f | 421 | struct value *val; |
c906108c SS |
422 | |
423 | while (isalnum (*p) || *p == '_') | |
424 | p++; | |
425 | varname = (char *) alloca (p - start + 1); | |
426 | strncpy (varname, start, p - start); | |
427 | varname[p - start] = '\0'; | |
428 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 429 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
430 | retval = (int) value_as_long (val); |
431 | else | |
432 | { | |
a3f17187 | 433 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
434 | retval = 0; |
435 | } | |
c906108c SS |
436 | } |
437 | else | |
438 | { | |
439 | if (*p == '-') | |
440 | ++p; | |
441 | while (*p >= '0' && *p <= '9') | |
442 | ++p; | |
443 | if (p == *pp) | |
444 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
445 | { |
446 | /* Skip non-numeric token */ | |
447 | while (*p && !isspace((int) *p)) | |
448 | ++p; | |
449 | /* Return zero, which caller must interpret as error. */ | |
450 | retval = 0; | |
451 | } | |
452 | else | |
453 | retval = atoi (*pp); | |
454 | } | |
455 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
456 | { | |
457 | /* Trailing junk: return 0 and let caller print error msg. */ | |
458 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
459 | ++p; | |
460 | retval = 0; | |
c906108c | 461 | } |
c906108c SS |
462 | while (isspace (*p)) |
463 | p++; | |
464 | *pp = p; | |
465 | return retval; | |
466 | } | |
5c44784c | 467 | |
11cf8741 | 468 | |
5c44784c JM |
469 | /* Like get_number_trailer, but don't allow a trailer. */ |
470 | int | |
fba45db2 | 471 | get_number (char **pp) |
5c44784c JM |
472 | { |
473 | return get_number_trailer (pp, '\0'); | |
474 | } | |
475 | ||
476 | /* Parse a number or a range. | |
477 | * A number will be of the form handled by get_number. | |
478 | * A range will be of the form <number1> - <number2>, and | |
479 | * will represent all the integers between number1 and number2, | |
480 | * inclusive. | |
481 | * | |
482 | * While processing a range, this fuction is called iteratively; | |
483 | * At each call it will return the next value in the range. | |
484 | * | |
485 | * At the beginning of parsing a range, the char pointer PP will | |
486 | * be advanced past <number1> and left pointing at the '-' token. | |
487 | * Subsequent calls will not advance the pointer until the range | |
488 | * is completed. The call that completes the range will advance | |
489 | * pointer PP past <number2>. | |
490 | */ | |
491 | ||
492 | int | |
fba45db2 | 493 | get_number_or_range (char **pp) |
5c44784c JM |
494 | { |
495 | static int last_retval, end_value; | |
496 | static char *end_ptr; | |
497 | static int in_range = 0; | |
498 | ||
499 | if (**pp != '-') | |
500 | { | |
501 | /* Default case: pp is pointing either to a solo number, | |
502 | or to the first number of a range. */ | |
503 | last_retval = get_number_trailer (pp, '-'); | |
504 | if (**pp == '-') | |
505 | { | |
506 | char **temp; | |
507 | ||
508 | /* This is the start of a range (<number1> - <number2>). | |
509 | Skip the '-', parse and remember the second number, | |
510 | and also remember the end of the final token. */ | |
511 | ||
512 | temp = &end_ptr; | |
513 | end_ptr = *pp + 1; | |
514 | while (isspace ((int) *end_ptr)) | |
515 | end_ptr++; /* skip white space */ | |
516 | end_value = get_number (temp); | |
517 | if (end_value < last_retval) | |
518 | { | |
8a3fe4f8 | 519 | error (_("inverted range")); |
5c44784c JM |
520 | } |
521 | else if (end_value == last_retval) | |
522 | { | |
523 | /* degenerate range (number1 == number2). Advance the | |
524 | token pointer so that the range will be treated as a | |
525 | single number. */ | |
526 | *pp = end_ptr; | |
527 | } | |
528 | else | |
529 | in_range = 1; | |
530 | } | |
531 | } | |
532 | else if (! in_range) | |
8a3fe4f8 | 533 | error (_("negative value")); |
5c44784c JM |
534 | else |
535 | { | |
536 | /* pp points to the '-' that betokens a range. All | |
537 | number-parsing has already been done. Return the next | |
538 | integer value (one greater than the saved previous value). | |
539 | Do not advance the token pointer 'pp' until the end of range | |
540 | is reached. */ | |
541 | ||
542 | if (++last_retval == end_value) | |
543 | { | |
544 | /* End of range reached; advance token pointer. */ | |
545 | *pp = end_ptr; | |
546 | in_range = 0; | |
547 | } | |
548 | } | |
549 | return last_retval; | |
550 | } | |
551 | ||
552 | ||
c906108c SS |
553 | \f |
554 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
555 | ||
556 | static void | |
fba45db2 | 557 | condition_command (char *arg, int from_tty) |
c906108c | 558 | { |
52f0bd74 | 559 | struct breakpoint *b; |
c906108c | 560 | char *p; |
52f0bd74 | 561 | int bnum; |
c906108c SS |
562 | |
563 | if (arg == 0) | |
e2e0b3e5 | 564 | error_no_arg (_("breakpoint number")); |
c906108c SS |
565 | |
566 | p = arg; | |
567 | bnum = get_number (&p); | |
5c44784c | 568 | if (bnum == 0) |
8a3fe4f8 | 569 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
570 | |
571 | ALL_BREAKPOINTS (b) | |
572 | if (b->number == bnum) | |
c5aa993b JM |
573 | { |
574 | if (b->cond) | |
575 | { | |
b8c9b27d | 576 | xfree (b->cond); |
c5aa993b JM |
577 | b->cond = 0; |
578 | } | |
579 | if (b->cond_string != NULL) | |
b8c9b27d | 580 | xfree (b->cond_string); |
c906108c | 581 | |
c5aa993b JM |
582 | if (*p == 0) |
583 | { | |
584 | b->cond = 0; | |
585 | b->cond_string = NULL; | |
586 | if (from_tty) | |
a3f17187 | 587 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); |
c5aa993b JM |
588 | } |
589 | else | |
590 | { | |
591 | arg = p; | |
592 | /* I don't know if it matters whether this is the string the user | |
593 | typed in or the decompiled expression. */ | |
594 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
595 | if (!b->pending) |
596 | { | |
597 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
598 | if (*arg) | |
8a3fe4f8 | 599 | error (_("Junk at end of expression")); |
0101ce28 | 600 | } |
c5aa993b JM |
601 | } |
602 | breakpoints_changed (); | |
221ea385 | 603 | breakpoint_modify_event (b->number); |
c5aa993b JM |
604 | return; |
605 | } | |
c906108c | 606 | |
8a3fe4f8 | 607 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
608 | } |
609 | ||
c906108c | 610 | static void |
fba45db2 | 611 | commands_command (char *arg, int from_tty) |
c906108c | 612 | { |
52f0bd74 | 613 | struct breakpoint *b; |
c906108c | 614 | char *p; |
52f0bd74 | 615 | int bnum; |
c906108c SS |
616 | struct command_line *l; |
617 | ||
618 | /* If we allowed this, we would have problems with when to | |
619 | free the storage, if we change the commands currently | |
620 | being read from. */ | |
621 | ||
622 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 623 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
624 | |
625 | p = arg; | |
626 | bnum = get_number (&p); | |
5c44784c | 627 | |
c906108c | 628 | if (p && *p) |
8a3fe4f8 | 629 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 630 | |
c906108c SS |
631 | ALL_BREAKPOINTS (b) |
632 | if (b->number == bnum) | |
9ebf4acf AC |
633 | { |
634 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
635 | bnum); | |
636 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
637 | l = read_command_lines (tmpbuf, from_tty); | |
638 | do_cleanups (cleanups); | |
639 | free_command_lines (&b->commands); | |
640 | b->commands = l; | |
641 | breakpoints_changed (); | |
642 | breakpoint_modify_event (b->number); | |
643 | return; | |
c5aa993b | 644 | } |
8a3fe4f8 | 645 | error (_("No breakpoint number %d."), bnum); |
c906108c | 646 | } |
40c03ae8 EZ |
647 | |
648 | /* Like commands_command, but instead of reading the commands from | |
649 | input stream, takes them from an already parsed command structure. | |
650 | ||
651 | This is used by cli-script.c to DTRT with breakpoint commands | |
652 | that are part of if and while bodies. */ | |
653 | enum command_control_type | |
654 | commands_from_control_command (char *arg, struct command_line *cmd) | |
655 | { | |
656 | struct breakpoint *b; | |
657 | char *p; | |
658 | int bnum; | |
659 | ||
660 | /* If we allowed this, we would have problems with when to | |
661 | free the storage, if we change the commands currently | |
662 | being read from. */ | |
663 | ||
664 | if (executing_breakpoint_commands) | |
665 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
666 | ||
667 | /* An empty string for the breakpoint number means the last | |
668 | breakpoint, but get_number expects a NULL pointer. */ | |
669 | if (arg && !*arg) | |
670 | p = NULL; | |
671 | else | |
672 | p = arg; | |
673 | bnum = get_number (&p); | |
674 | ||
675 | if (p && *p) | |
676 | error (_("Unexpected extra arguments following breakpoint number.")); | |
677 | ||
678 | ALL_BREAKPOINTS (b) | |
679 | if (b->number == bnum) | |
680 | { | |
681 | free_command_lines (&b->commands); | |
682 | if (cmd->body_count != 1) | |
683 | error (_("Invalid \"commands\" block structure.")); | |
684 | /* We need to copy the commands because if/while will free the | |
685 | list after it finishes execution. */ | |
686 | b->commands = copy_command_lines (cmd->body_list[0]); | |
687 | breakpoints_changed (); | |
688 | breakpoint_modify_event (b->number); | |
689 | return simple_control; | |
690 | } | |
691 | error (_("No breakpoint number %d."), bnum); | |
692 | } | |
c906108c SS |
693 | \f |
694 | /* Like target_read_memory() but if breakpoints are inserted, return | |
695 | the shadow contents instead of the breakpoints themselves. | |
696 | ||
697 | Read "memory data" from whatever target or inferior we have. | |
698 | Returns zero if successful, errno value if not. EIO is used | |
699 | for address out of bounds. If breakpoints are inserted, returns | |
700 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
701 | ||
702 | int | |
359a9262 | 703 | read_memory_nobpt (CORE_ADDR memaddr, gdb_byte *myaddr, unsigned len) |
c906108c SS |
704 | { |
705 | int status; | |
ffce0d52 | 706 | struct bp_location *b; |
c906108c SS |
707 | CORE_ADDR bp_addr = 0; |
708 | int bp_size = 0; | |
709 | ||
3b3b875c | 710 | if (gdbarch_breakpoint_from_pc (current_gdbarch, &bp_addr, &bp_size) == NULL) |
c906108c SS |
711 | /* No breakpoints on this machine. */ |
712 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 713 | |
ffce0d52 | 714 | ALL_BP_LOCATIONS (b) |
c5aa993b | 715 | { |
ffce0d52 | 716 | if (b->owner->type == bp_none) |
8a3fe4f8 | 717 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
718 | b->owner->number); |
719 | ||
720 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 721 | continue; |
ffce0d52 | 722 | if (!b->inserted) |
c5aa993b JM |
723 | continue; |
724 | /* Addresses and length of the part of the breakpoint that | |
725 | we need to copy. */ | |
8181d85f DJ |
726 | bp_addr = b->target_info.placed_address; |
727 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 728 | if (bp_size == 0) |
8181d85f | 729 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b JM |
730 | continue; |
731 | if (bp_addr + bp_size <= memaddr) | |
732 | /* The breakpoint is entirely before the chunk of memory we | |
733 | are reading. */ | |
734 | continue; | |
735 | if (bp_addr >= memaddr + len) | |
736 | /* The breakpoint is entirely after the chunk of memory we are | |
737 | reading. */ | |
738 | continue; | |
739 | /* Copy the breakpoint from the shadow contents, and recurse for | |
740 | the things before and after. */ | |
c906108c | 741 | { |
c5aa993b JM |
742 | /* Offset within shadow_contents. */ |
743 | int bptoffset = 0; | |
c906108c | 744 | |
c5aa993b JM |
745 | if (bp_addr < memaddr) |
746 | { | |
747 | /* Only copy the second part of the breakpoint. */ | |
748 | bp_size -= memaddr - bp_addr; | |
749 | bptoffset = memaddr - bp_addr; | |
750 | bp_addr = memaddr; | |
751 | } | |
752 | ||
753 | if (bp_addr + bp_size > memaddr + len) | |
754 | { | |
755 | /* Only copy the first part of the breakpoint. */ | |
756 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
757 | } | |
758 | ||
759 | memcpy (myaddr + bp_addr - memaddr, | |
8181d85f | 760 | b->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
761 | |
762 | if (bp_addr > memaddr) | |
763 | { | |
764 | /* Copy the section of memory before the breakpoint. */ | |
359a9262 | 765 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
766 | if (status != 0) |
767 | return status; | |
768 | } | |
769 | ||
770 | if (bp_addr + bp_size < memaddr + len) | |
771 | { | |
772 | /* Copy the section of memory after the breakpoint. */ | |
359a9262 | 773 | status = read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
774 | myaddr + bp_addr + bp_size - memaddr, |
775 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
776 | if (status != 0) |
777 | return status; | |
778 | } | |
779 | return 0; | |
c906108c | 780 | } |
c5aa993b | 781 | } |
c906108c SS |
782 | /* Nothing overlaps. Just call read_memory_noerr. */ |
783 | return target_read_memory (memaddr, myaddr, len); | |
784 | } | |
c906108c | 785 | \f |
c5aa993b | 786 | |
687595f9 | 787 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 788 | static void |
687595f9 DJ |
789 | insert_catchpoint (struct ui_out *uo, void *args) |
790 | { | |
791 | struct breakpoint *b = (struct breakpoint *) args; | |
792 | int val = -1; | |
793 | ||
794 | switch (b->type) | |
795 | { | |
796 | case bp_catch_fork: | |
fa113d1a | 797 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
798 | break; |
799 | case bp_catch_vfork: | |
fa113d1a | 800 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
801 | break; |
802 | case bp_catch_exec: | |
fa113d1a | 803 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
804 | break; |
805 | default: | |
e2e0b3e5 | 806 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
807 | break; |
808 | } | |
687595f9 DJ |
809 | } |
810 | ||
7270d8f2 OF |
811 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
812 | ||
b40ce68a JB |
813 | static void |
814 | free_valchain (struct bp_location *b) | |
7270d8f2 OF |
815 | { |
816 | struct value *v; | |
817 | struct value *n; | |
818 | ||
819 | /* Free the saved value chain. We will construct a new one | |
820 | the next time the watchpoint is inserted. */ | |
821 | for (v = b->owner->val_chain; v; v = n) | |
822 | { | |
17cf0ecd | 823 | n = value_next (v); |
7270d8f2 OF |
824 | value_free (v); |
825 | } | |
826 | b->owner->val_chain = NULL; | |
827 | } | |
828 | ||
879bfdc2 DJ |
829 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
830 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
831 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
832 | ||
833 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
834 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 835 | static int |
879bfdc2 | 836 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
837 | struct ui_file *tmp_error_stream, |
838 | int *disabled_breaks, int *process_warning, | |
839 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
840 | { |
841 | int val = 0; | |
842 | ||
843 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
844 | breakpoints should not be inserted. */ | |
468d015d | 845 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
846 | return 0; |
847 | ||
848 | if (bpt->inserted || bpt->duplicate) | |
849 | return 0; | |
850 | ||
8181d85f DJ |
851 | /* Initialize the target-specific information. */ |
852 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
853 | bpt->target_info.placed_address = bpt->address; | |
854 | ||
879bfdc2 DJ |
855 | if (bpt->loc_type == bp_loc_software_breakpoint |
856 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
857 | { | |
765dc015 VP |
858 | if (bpt->owner->type != bp_hardware_breakpoint) |
859 | { | |
860 | /* If the explicitly specified breakpoint type | |
861 | is not hardware breakpoint, check the memory map to see | |
862 | if the breakpoint address is in read only memory or not. | |
863 | Two important cases are: | |
864 | - location type is not hardware breakpoint, memory | |
865 | is readonly. We change the type of the location to | |
866 | hardware breakpoint. | |
867 | - location type is hardware breakpoint, memory is read-write. | |
868 | This means we've previously made the location hardware one, but | |
869 | then the memory map changed, so we undo. | |
870 | ||
871 | When breakpoints are removed, remove_breakpoints will | |
872 | use location types we've just set here, the only possible | |
873 | problem is that memory map has changed during running program, | |
874 | but it's not going to work anyway with current gdb. */ | |
875 | struct mem_region *mr | |
876 | = lookup_mem_region (bpt->target_info.placed_address); | |
877 | ||
878 | if (mr) | |
879 | { | |
880 | if (automatic_hardware_breakpoints) | |
881 | { | |
882 | int changed = 0; | |
883 | enum bp_loc_type new_type; | |
884 | ||
885 | if (mr->attrib.mode != MEM_RW) | |
886 | new_type = bp_loc_hardware_breakpoint; | |
887 | else | |
888 | new_type = bp_loc_software_breakpoint; | |
889 | ||
890 | if (new_type != bpt->loc_type) | |
891 | { | |
892 | static int said = 0; | |
893 | bpt->loc_type = new_type; | |
894 | if (!said) | |
895 | { | |
896 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 897 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
898 | said = 1; |
899 | } | |
900 | } | |
901 | } | |
902 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
903 | && mr->attrib.mode != MEM_RW) | |
904 | warning (_("cannot set software breakpoint at readonly address %s"), | |
905 | paddr (bpt->address)); | |
906 | } | |
907 | } | |
908 | ||
879bfdc2 DJ |
909 | /* First check to see if we have to handle an overlay. */ |
910 | if (overlay_debugging == ovly_off | |
911 | || bpt->section == NULL | |
912 | || !(section_is_overlay (bpt->section))) | |
913 | { | |
914 | /* No overlay handling: just set the breakpoint. */ | |
915 | ||
916 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 917 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 918 | else |
8181d85f | 919 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
920 | } |
921 | else | |
922 | { | |
923 | /* This breakpoint is in an overlay section. | |
924 | Shall we set a breakpoint at the LMA? */ | |
925 | if (!overlay_events_enabled) | |
926 | { | |
927 | /* Yes -- overlay event support is not active, | |
928 | so we must try to set a breakpoint at the LMA. | |
929 | This will not work for a hardware breakpoint. */ | |
930 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 931 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
932 | bpt->owner->number); |
933 | else | |
934 | { | |
935 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
936 | bpt->section); | |
937 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
938 | bpt->overlay_target_info = bpt->target_info; |
939 | bpt->overlay_target_info.placed_address = addr; | |
940 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
941 | if (val != 0) |
942 | fprintf_unfiltered (tmp_error_stream, | |
943 | "Overlay breakpoint %d failed: in ROM?", | |
944 | bpt->owner->number); | |
945 | } | |
946 | } | |
947 | /* Shall we set a breakpoint at the VMA? */ | |
948 | if (section_is_mapped (bpt->section)) | |
949 | { | |
950 | /* Yes. This overlay section is mapped into memory. */ | |
951 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 952 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 953 | else |
8181d85f | 954 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
955 | } |
956 | else | |
957 | { | |
958 | /* No. This breakpoint will not be inserted. | |
959 | No error, but do not mark the bp as 'inserted'. */ | |
960 | return 0; | |
961 | } | |
962 | } | |
963 | ||
964 | if (val) | |
965 | { | |
966 | /* Can't set the breakpoint. */ | |
9bbf65bb | 967 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
968 | { |
969 | /* See also: disable_breakpoints_in_shlibs. */ | |
970 | val = 0; | |
971 | bpt->owner->enable_state = bp_shlib_disabled; | |
972 | if (!*disabled_breaks) | |
973 | { | |
974 | fprintf_unfiltered (tmp_error_stream, | |
975 | "Cannot insert breakpoint %d.\n", | |
976 | bpt->owner->number); | |
977 | fprintf_unfiltered (tmp_error_stream, | |
978 | "Temporarily disabling shared library breakpoints:\n"); | |
979 | } | |
980 | *disabled_breaks = 1; | |
981 | fprintf_unfiltered (tmp_error_stream, | |
982 | "breakpoint #%d\n", bpt->owner->number); | |
983 | } | |
984 | else | |
879bfdc2 DJ |
985 | { |
986 | #ifdef ONE_PROCESS_WRITETEXT | |
987 | *process_warning = 1; | |
988 | #endif | |
989 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
990 | { | |
991 | *hw_breakpoint_error = 1; | |
992 | fprintf_unfiltered (tmp_error_stream, | |
993 | "Cannot insert hardware breakpoint %d.\n", | |
994 | bpt->owner->number); | |
995 | } | |
996 | else | |
997 | { | |
998 | fprintf_unfiltered (tmp_error_stream, | |
999 | "Cannot insert breakpoint %d.\n", | |
1000 | bpt->owner->number); | |
1001 | fprintf_filtered (tmp_error_stream, | |
1002 | "Error accessing memory address "); | |
66bf4b3a | 1003 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
1004 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1005 | safe_strerror (val)); | |
1006 | } | |
1007 | ||
1008 | } | |
1009 | } | |
1010 | else | |
1011 | bpt->inserted = 1; | |
1012 | ||
1013 | return val; | |
1014 | } | |
1015 | ||
1016 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1017 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1018 | watchpoints. It's not clear that it's necessary... */ | |
1019 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1020 | { | |
1021 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
1022 | based on the expression. Ideally this should happen at a higher level, | |
1023 | and there should be one bp_location for each computed address we | |
1024 | must watch. As soon as a many-to-one mapping is available I'll | |
1025 | convert this. */ | |
1026 | ||
7789d0fa | 1027 | int within_current_scope; |
879bfdc2 DJ |
1028 | struct value *mark = value_mark (); |
1029 | struct value *v; | |
7789d0fa | 1030 | struct frame_id saved_frame_id; |
879bfdc2 | 1031 | |
7789d0fa | 1032 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
1033 | evaluating the watchpoint expression on its own frame. */ |
1034 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1035 | took a frame parameter, so that we didn't have to change the | |
1036 | selected frame. */ | |
206415a3 | 1037 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
879bfdc2 DJ |
1038 | |
1039 | /* Determine if the watchpoint is within scope. */ | |
1040 | if (bpt->owner->exp_valid_block == NULL) | |
1041 | within_current_scope = 1; | |
1042 | else | |
1043 | { | |
1044 | struct frame_info *fi; | |
1045 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
1046 | within_current_scope = (fi != NULL); | |
1047 | if (within_current_scope) | |
1048 | select_frame (fi); | |
1049 | } | |
1050 | ||
1051 | if (within_current_scope) | |
1052 | { | |
7270d8f2 OF |
1053 | free_valchain (bpt); |
1054 | ||
879bfdc2 DJ |
1055 | /* Evaluate the expression and cut the chain of values |
1056 | produced off from the value chain. | |
1057 | ||
1058 | Make sure the value returned isn't lazy; we use | |
1059 | laziness to determine what memory GDB actually needed | |
1060 | in order to compute the value of the expression. */ | |
1061 | v = evaluate_expression (bpt->owner->exp); | |
0fd88904 | 1062 | value_contents (v); |
879bfdc2 DJ |
1063 | value_release_to_mark (mark); |
1064 | ||
1065 | bpt->owner->val_chain = v; | |
1066 | bpt->inserted = 1; | |
1067 | ||
1068 | /* Look at each value on the value chain. */ | |
17cf0ecd | 1069 | for (; v; v = value_next (v)) |
879bfdc2 DJ |
1070 | { |
1071 | /* If it's a memory location, and GDB actually needed | |
1072 | its contents to evaluate the expression, then we | |
1073 | must watch it. */ | |
1074 | if (VALUE_LVAL (v) == lval_memory | |
d69fe07e | 1075 | && ! value_lazy (v)) |
879bfdc2 | 1076 | { |
df407dfe | 1077 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
1078 | |
1079 | /* We only watch structs and arrays if user asked | |
1080 | for it explicitly, never if they just happen to | |
1081 | appear in the middle of some value chain. */ | |
1082 | if (v == bpt->owner->val_chain | |
1083 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1084 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1085 | { | |
1086 | CORE_ADDR addr; | |
1087 | int len, type; | |
1088 | ||
df407dfe AC |
1089 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1090 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
1091 | type = hw_write; |
1092 | if (bpt->owner->type == bp_read_watchpoint) | |
1093 | type = hw_read; | |
1094 | else if (bpt->owner->type == bp_access_watchpoint) | |
1095 | type = hw_access; | |
1096 | ||
1097 | val = target_insert_watchpoint (addr, len, type); | |
1098 | if (val == -1) | |
1099 | { | |
1100 | /* Don't exit the loop, try to insert | |
1101 | every value on the value chain. That's | |
1102 | because we will be removing all the | |
1103 | watches below, and removing a | |
1104 | watchpoint we didn't insert could have | |
1105 | adverse effects. */ | |
1106 | bpt->inserted = 0; | |
1107 | } | |
1108 | val = 0; | |
1109 | } | |
1110 | } | |
1111 | } | |
1112 | /* Failure to insert a watchpoint on any memory value in the | |
1113 | value chain brings us here. */ | |
1114 | if (!bpt->inserted) | |
1115 | { | |
0bde7532 | 1116 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
1117 | *hw_breakpoint_error = 1; |
1118 | fprintf_unfiltered (tmp_error_stream, | |
1119 | "Could not insert hardware watchpoint %d.\n", | |
1120 | bpt->owner->number); | |
1121 | val = -1; | |
1122 | } | |
1123 | } | |
1124 | else | |
1125 | { | |
a3f17187 AC |
1126 | printf_filtered (_("\ |
1127 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1128 | in which its expression is valid.\n"), | |
1129 | bpt->owner->number); | |
879bfdc2 DJ |
1130 | if (bpt->owner->related_breakpoint) |
1131 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1132 | bpt->owner->disposition = disp_del_at_next_stop; | |
1133 | } | |
1134 | ||
7789d0fa AC |
1135 | /* Restore the selected frame. */ |
1136 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1137 | |
1138 | return val; | |
1139 | } | |
1140 | ||
1141 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1142 | { | |
1143 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1144 | breakpoint. Once again, it would be better if this was represented | |
1145 | as two bp_locations. */ | |
1146 | ||
1147 | /* If we get here, we must have a callback mechanism for exception | |
1148 | events -- with g++ style embedded label support, we insert | |
1149 | ordinary breakpoints and not catchpoints. */ | |
8181d85f | 1150 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1151 | if (val) |
1152 | { | |
1153 | /* Couldn't set breakpoint for some reason */ | |
1154 | fprintf_unfiltered (tmp_error_stream, | |
1155 | "Cannot insert catchpoint %d; disabling it.\n", | |
1156 | bpt->owner->number); | |
1157 | fprintf_filtered (tmp_error_stream, | |
1158 | "Error accessing memory address "); | |
66bf4b3a | 1159 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
1160 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1161 | safe_strerror (val)); | |
1162 | bpt->owner->enable_state = bp_disabled; | |
1163 | } | |
1164 | else | |
1165 | { | |
1166 | /* Bp set, now make sure callbacks are enabled */ | |
1167 | /* Format possible error msg */ | |
1168 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1169 | bpt->owner->number); | |
1170 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1171 | int val; | |
1172 | args_for_catchpoint_enable args; | |
1173 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1174 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1175 | args.enable_p = 1; | |
1176 | val = catch_errors (cover_target_enable_exception_callback, | |
1177 | &args, message, RETURN_MASK_ALL); | |
1178 | do_cleanups (cleanups); | |
1179 | if (val != 0 && val != -1) | |
1180 | bpt->inserted = 1; | |
1181 | ||
1182 | /* Check if something went wrong; val == 0 can be ignored */ | |
1183 | if (val == -1) | |
1184 | { | |
1185 | /* something went wrong */ | |
1186 | fprintf_unfiltered (tmp_error_stream, | |
1187 | "Cannot insert catchpoint %d; disabling it.\n", | |
1188 | bpt->owner->number); | |
1189 | bpt->owner->enable_state = bp_disabled; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | return val; | |
1194 | } | |
1195 | ||
1196 | else if (bpt->owner->type == bp_catch_fork | |
1197 | || bpt->owner->type == bp_catch_vfork | |
1198 | || bpt->owner->type == bp_catch_exec) | |
1199 | { | |
71fff37b AC |
1200 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1201 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1202 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1203 | bpt->owner->number); | |
1204 | if (e.reason < 0) | |
879bfdc2 DJ |
1205 | bpt->owner->enable_state = bp_disabled; |
1206 | else | |
1207 | bpt->inserted = 1; | |
1640b821 DJ |
1208 | |
1209 | /* We've already printed an error message if there was a problem | |
1210 | inserting this catchpoint, and we've disabled the catchpoint, | |
1211 | so just return success. */ | |
1212 | return 0; | |
879bfdc2 DJ |
1213 | } |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
c906108c SS |
1218 | /* insert_breakpoints is used when starting or continuing the program. |
1219 | remove_breakpoints is used when the program stops. | |
1220 | Both return zero if successful, | |
1221 | or an `errno' value if could not write the inferior. */ | |
1222 | ||
1223 | int | |
fba45db2 | 1224 | insert_breakpoints (void) |
c906108c | 1225 | { |
879bfdc2 | 1226 | struct bp_location *b, *temp; |
53a5351d | 1227 | int return_val = 0; /* return success code. */ |
c906108c SS |
1228 | int val = 0; |
1229 | int disabled_breaks = 0; | |
81d0cc19 GS |
1230 | int hw_breakpoint_error = 0; |
1231 | int process_warning = 0; | |
c906108c | 1232 | |
81d0cc19 GS |
1233 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1234 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1235 | ||
1236 | /* Explicitly mark the warning -- this will only be printed if | |
1237 | there was an error. */ | |
1238 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1239 | |
879bfdc2 DJ |
1240 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1241 | { | |
1242 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1243 | breakpoints should not be inserted. */ | |
468d015d | 1244 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1245 | continue; |
1246 | ||
f365de73 AS |
1247 | /* There is no point inserting thread-specific breakpoints if the |
1248 | thread no longer exists. */ | |
1249 | if (b->owner->thread != -1 | |
1250 | && !valid_thread_id (b->owner->thread)) | |
1251 | continue; | |
1252 | ||
879bfdc2 DJ |
1253 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when |
1254 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1255 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1256 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1257 | { | |
1258 | struct value *val; | |
1259 | val = evaluate_expression (b->owner->exp); | |
1260 | release_value (val); | |
d69fe07e | 1261 | if (value_lazy (val)) |
879bfdc2 DJ |
1262 | value_fetch_lazy (val); |
1263 | b->owner->val = val; | |
1264 | } | |
a881cf8e | 1265 | |
879bfdc2 DJ |
1266 | val = insert_bp_location (b, tmp_error_stream, |
1267 | &disabled_breaks, &process_warning, | |
1268 | &hw_breakpoint_error); | |
1269 | if (val) | |
1270 | return_val = val; | |
1271 | } | |
c906108c | 1272 | |
879bfdc2 | 1273 | if (return_val) |
81d0cc19 GS |
1274 | { |
1275 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1276 | message about possibly exhausted resources. */ | |
879bfdc2 | 1277 | if (hw_breakpoint_error) |
81d0cc19 | 1278 | { |
c6510018 MS |
1279 | fprintf_unfiltered (tmp_error_stream, |
1280 | "Could not insert hardware breakpoints:\n\ | |
1281 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1282 | } |
c6510018 | 1283 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1284 | if (process_warning) |
c6510018 MS |
1285 | fprintf_unfiltered (tmp_error_stream, |
1286 | "The same program may be running in another process."); | |
1287 | #endif | |
81d0cc19 GS |
1288 | target_terminal_ours_for_output (); |
1289 | error_stream (tmp_error_stream); | |
1290 | } | |
53a5351d | 1291 | return return_val; |
c906108c SS |
1292 | } |
1293 | ||
c906108c | 1294 | int |
fba45db2 | 1295 | remove_breakpoints (void) |
c906108c | 1296 | { |
0bde7532 | 1297 | struct bp_location *b; |
c906108c SS |
1298 | int val; |
1299 | ||
0bde7532 | 1300 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1301 | { |
0bde7532 | 1302 | if (b->inserted) |
c5aa993b JM |
1303 | { |
1304 | val = remove_breakpoint (b, mark_uninserted); | |
1305 | if (val != 0) | |
1306 | return val; | |
1307 | } | |
1308 | } | |
c906108c SS |
1309 | return 0; |
1310 | } | |
1311 | ||
692590c1 | 1312 | int |
80ce1ecb | 1313 | remove_hw_watchpoints (void) |
692590c1 | 1314 | { |
0bde7532 | 1315 | struct bp_location *b; |
692590c1 MS |
1316 | int val; |
1317 | ||
0bde7532 | 1318 | ALL_BP_LOCATIONS (b) |
692590c1 | 1319 | { |
0bde7532 | 1320 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1321 | { |
1322 | val = remove_breakpoint (b, mark_uninserted); | |
1323 | if (val != 0) | |
1324 | return val; | |
1325 | } | |
1326 | } | |
1327 | return 0; | |
1328 | } | |
1329 | ||
c906108c | 1330 | int |
fba45db2 | 1331 | reattach_breakpoints (int pid) |
c906108c | 1332 | { |
0bde7532 | 1333 | struct bp_location *b; |
c906108c | 1334 | int val; |
ce696e05 | 1335 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1336 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1337 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1338 | ||
1339 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1340 | |
ce696e05 | 1341 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1342 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1343 | { |
0bde7532 | 1344 | if (b->inserted) |
c5aa993b | 1345 | { |
a4954f26 DJ |
1346 | b->inserted = 0; |
1347 | val = insert_bp_location (b, tmp_error_stream, | |
1348 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1349 | if (val != 0) |
1350 | { | |
ce696e05 | 1351 | do_cleanups (old_chain); |
c5aa993b JM |
1352 | return val; |
1353 | } | |
1354 | } | |
1355 | } | |
ce696e05 | 1356 | do_cleanups (old_chain); |
c906108c SS |
1357 | return 0; |
1358 | } | |
1359 | ||
1360 | void | |
fba45db2 | 1361 | update_breakpoints_after_exec (void) |
c906108c | 1362 | { |
c5aa993b JM |
1363 | struct breakpoint *b; |
1364 | struct breakpoint *temp; | |
c906108c SS |
1365 | |
1366 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1367 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1368 | shadow is NOT valid after an exec()! */ | |
1369 | mark_breakpoints_out (); | |
1370 | ||
1371 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1372 | { |
1373 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1374 | if (b->type == bp_shlib_event) | |
1375 | { | |
1376 | delete_breakpoint (b); | |
1377 | continue; | |
1378 | } | |
c906108c | 1379 | |
1900040c MS |
1380 | /* Thread event breakpoints must be set anew after an exec(), |
1381 | as must overlay event breakpoints. */ | |
1382 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1383 | { |
1384 | delete_breakpoint (b); | |
1385 | continue; | |
1386 | } | |
1387 | ||
c5aa993b JM |
1388 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1389 | if (b->type == bp_step_resume) | |
1390 | { | |
1391 | delete_breakpoint (b); | |
1392 | continue; | |
1393 | } | |
1394 | ||
c5aa993b JM |
1395 | /* Ditto the exception-handling catchpoints. */ |
1396 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1397 | { | |
1398 | delete_breakpoint (b); | |
1399 | continue; | |
1400 | } | |
1401 | ||
1402 | /* Don't delete an exec catchpoint, because else the inferior | |
1403 | won't stop when it ought! | |
1404 | ||
1405 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1406 | on this target, we may not be able to stop when the vfork is |
1407 | seen, but only when the subsequent exec is seen. (And because | |
1408 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1409 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1410 | if ((b->type == bp_catch_exec) || |
1411 | (b->type == bp_catch_vfork) || | |
1412 | (b->type == bp_catch_fork)) | |
1413 | { | |
c5aa993b JM |
1414 | continue; |
1415 | } | |
1416 | ||
1417 | /* bp_finish is a special case. The only way we ought to be able | |
1418 | to see one of these when an exec() has happened, is if the user | |
1419 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1420 | carries them to the call-site of the current callee, by setting | |
1421 | a temporary bp there and resuming. But in this case, the finish | |
1422 | will carry them entirely through the vfork & exec. | |
1423 | ||
1424 | We don't want to allow a bp_finish to remain inserted now. But | |
1425 | we can't safely delete it, 'cause finish_command has a handle to | |
1426 | the bp on a bpstat, and will later want to delete it. There's a | |
1427 | chance (and I've seen it happen) that if we delete the bp_finish | |
1428 | here, that its storage will get reused by the time finish_command | |
1429 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1430 | We really must allow finish_command to delete a bp_finish. | |
1431 | ||
53a5351d JM |
1432 | In the absense of a general solution for the "how do we know |
1433 | it's safe to delete something others may have handles to?" | |
1434 | problem, what we'll do here is just uninsert the bp_finish, and | |
1435 | let finish_command delete it. | |
1436 | ||
1437 | (We know the bp_finish is "doomed" in the sense that it's | |
1438 | momentary, and will be deleted as soon as finish_command sees | |
1439 | the inferior stopped. So it doesn't matter that the bp's | |
1440 | address is probably bogus in the new a.out, unlike e.g., the | |
1441 | solib breakpoints.) */ | |
c5aa993b | 1442 | |
c5aa993b JM |
1443 | if (b->type == bp_finish) |
1444 | { | |
1445 | continue; | |
1446 | } | |
1447 | ||
1448 | /* Without a symbolic address, we have little hope of the | |
1449 | pre-exec() address meaning the same thing in the post-exec() | |
1450 | a.out. */ | |
1451 | if (b->addr_string == NULL) | |
1452 | { | |
1453 | delete_breakpoint (b); | |
1454 | continue; | |
1455 | } | |
c5aa993b | 1456 | } |
1900040c MS |
1457 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1458 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1459 | } |
1460 | ||
1461 | int | |
fba45db2 | 1462 | detach_breakpoints (int pid) |
c906108c | 1463 | { |
0bde7532 | 1464 | struct bp_location *b; |
c906108c | 1465 | int val; |
ce696e05 | 1466 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1467 | |
39f77062 | 1468 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1469 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1470 | |
ce696e05 KB |
1471 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1472 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1473 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1474 | { |
0bde7532 | 1475 | if (b->inserted) |
c5aa993b JM |
1476 | { |
1477 | val = remove_breakpoint (b, mark_inserted); | |
1478 | if (val != 0) | |
1479 | { | |
ce696e05 | 1480 | do_cleanups (old_chain); |
c5aa993b JM |
1481 | return val; |
1482 | } | |
1483 | } | |
1484 | } | |
ce696e05 | 1485 | do_cleanups (old_chain); |
c906108c SS |
1486 | return 0; |
1487 | } | |
1488 | ||
1489 | static int | |
0bde7532 | 1490 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1491 | { |
1492 | int val; | |
c5aa993b | 1493 | |
0bde7532 | 1494 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1495 | /* Permanent breakpoints cannot be inserted or removed. */ |
1496 | return 0; | |
1497 | ||
0bde7532 | 1498 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1499 | warning (_("attempted to remove apparently deleted breakpoint #%d?"), |
0bde7532 DJ |
1500 | b->owner->number); |
1501 | ||
1502 | if (b->loc_type == bp_loc_software_breakpoint | |
1503 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1504 | { |
c02f5703 MS |
1505 | /* "Normal" instruction breakpoint: either the standard |
1506 | trap-instruction bp (bp_breakpoint), or a | |
1507 | bp_hardware_breakpoint. */ | |
1508 | ||
1509 | /* First check to see if we have to handle an overlay. */ | |
1510 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1511 | || b->section == NULL |
1512 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1513 | { |
1514 | /* No overlay handling: just remove the breakpoint. */ | |
1515 | ||
0bde7532 | 1516 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1517 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1518 | else |
8181d85f | 1519 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1520 | } |
c906108c SS |
1521 | else |
1522 | { | |
c02f5703 MS |
1523 | /* This breakpoint is in an overlay section. |
1524 | Did we set a breakpoint at the LMA? */ | |
1525 | if (!overlay_events_enabled) | |
1526 | { | |
1527 | /* Yes -- overlay event support is not active, so we | |
1528 | should have set a breakpoint at the LMA. Remove it. | |
1529 | */ | |
c02f5703 MS |
1530 | /* Ignore any failures: if the LMA is in ROM, we will |
1531 | have already warned when we failed to insert it. */ | |
0bde7532 | 1532 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1533 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1534 | else |
8181d85f | 1535 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1536 | } |
1537 | /* Did we set a breakpoint at the VMA? | |
1538 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1539 | if (b->inserted) |
c906108c | 1540 | { |
c02f5703 MS |
1541 | /* Yes -- remove it. Previously we did not bother to |
1542 | remove the breakpoint if the section had been | |
1543 | unmapped, but let's not rely on that being safe. We | |
1544 | don't know what the overlay manager might do. */ | |
0bde7532 | 1545 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1546 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1547 | |
1548 | /* However, we should remove *software* breakpoints only | |
1549 | if the section is still mapped, or else we overwrite | |
1550 | wrong code with the saved shadow contents. */ | |
1551 | else if (section_is_mapped (b->section)) | |
8181d85f | 1552 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1553 | else |
1554 | val = 0; | |
c906108c | 1555 | } |
c02f5703 MS |
1556 | else |
1557 | { | |
1558 | /* No -- not inserted, so no need to remove. No error. */ | |
1559 | val = 0; | |
1560 | } | |
c906108c SS |
1561 | } |
1562 | if (val) | |
1563 | return val; | |
0bde7532 | 1564 | b->inserted = (is == mark_inserted); |
c906108c | 1565 | } |
0bde7532 | 1566 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1567 | && breakpoint_enabled (b->owner) |
0bde7532 | 1568 | && !b->duplicate) |
c906108c | 1569 | { |
278cd55f AC |
1570 | struct value *v; |
1571 | struct value *n; | |
c5aa993b | 1572 | |
0bde7532 | 1573 | b->inserted = (is == mark_inserted); |
c906108c | 1574 | /* Walk down the saved value chain. */ |
17cf0ecd | 1575 | for (v = b->owner->val_chain; v; v = value_next (v)) |
c906108c SS |
1576 | { |
1577 | /* For each memory reference remove the watchpoint | |
1578 | at that address. */ | |
5c44784c | 1579 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 1580 | && ! value_lazy (v)) |
c906108c | 1581 | { |
df407dfe | 1582 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1583 | |
0bde7532 | 1584 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1585 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1586 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1587 | { | |
1588 | CORE_ADDR addr; | |
1589 | int len, type; | |
1590 | ||
df407dfe AC |
1591 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1592 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1593 | type = hw_write; |
0bde7532 | 1594 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1595 | type = hw_read; |
0bde7532 | 1596 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1597 | type = hw_access; |
1598 | ||
1599 | val = target_remove_watchpoint (addr, len, type); | |
1600 | if (val == -1) | |
0bde7532 | 1601 | b->inserted = 1; |
2e70b7b9 MS |
1602 | val = 0; |
1603 | } | |
c906108c SS |
1604 | } |
1605 | } | |
1606 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1607 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1608 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1609 | b->owner->number); |
c906108c | 1610 | } |
0bde7532 DJ |
1611 | else if ((b->owner->type == bp_catch_fork || |
1612 | b->owner->type == bp_catch_vfork || | |
1613 | b->owner->type == bp_catch_exec) | |
468d015d | 1614 | && breakpoint_enabled (b->owner) |
0bde7532 | 1615 | && !b->duplicate) |
c906108c SS |
1616 | { |
1617 | val = -1; | |
0bde7532 | 1618 | switch (b->owner->type) |
c5aa993b JM |
1619 | { |
1620 | case bp_catch_fork: | |
39f77062 | 1621 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1622 | break; |
1623 | case bp_catch_vfork: | |
39f77062 | 1624 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1625 | break; |
1626 | case bp_catch_exec: | |
39f77062 | 1627 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1628 | break; |
ac9a91a7 | 1629 | default: |
8a3fe4f8 | 1630 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1631 | break; |
c5aa993b | 1632 | } |
c906108c SS |
1633 | if (val) |
1634 | return val; | |
0bde7532 | 1635 | b->inserted = (is == mark_inserted); |
c906108c | 1636 | } |
0bde7532 DJ |
1637 | else if ((b->owner->type == bp_catch_catch || |
1638 | b->owner->type == bp_catch_throw) | |
468d015d | 1639 | && breakpoint_enabled (b->owner) |
0bde7532 | 1640 | && !b->duplicate) |
c906108c | 1641 | { |
8181d85f | 1642 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1643 | if (val) |
c5aa993b | 1644 | return val; |
0bde7532 | 1645 | b->inserted = (is == mark_inserted); |
c906108c | 1646 | } |
c906108c SS |
1647 | |
1648 | return 0; | |
1649 | } | |
1650 | ||
1651 | /* Clear the "inserted" flag in all breakpoints. */ | |
1652 | ||
1653 | void | |
fba45db2 | 1654 | mark_breakpoints_out (void) |
c906108c | 1655 | { |
075f6582 | 1656 | struct bp_location *bpt; |
c906108c | 1657 | |
075f6582 DJ |
1658 | ALL_BP_LOCATIONS (bpt) |
1659 | bpt->inserted = 0; | |
c906108c SS |
1660 | } |
1661 | ||
53a5351d JM |
1662 | /* Clear the "inserted" flag in all breakpoints and delete any |
1663 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1664 | |
1665 | Plus other such housekeeping that has to be done for breakpoints | |
1666 | between runs. | |
1667 | ||
53a5351d JM |
1668 | Note: this function gets called at the end of a run (by |
1669 | generic_mourn_inferior) and when a run begins (by | |
1670 | init_wait_for_inferior). */ | |
c906108c SS |
1671 | |
1672 | ||
1673 | ||
1674 | void | |
fba45db2 | 1675 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1676 | { |
52f0bd74 | 1677 | struct breakpoint *b, *temp; |
075f6582 | 1678 | struct bp_location *bpt; |
c906108c | 1679 | |
075f6582 DJ |
1680 | ALL_BP_LOCATIONS (bpt) |
1681 | bpt->inserted = 0; | |
1682 | ||
c906108c | 1683 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1684 | { |
c5aa993b JM |
1685 | switch (b->type) |
1686 | { | |
1687 | case bp_call_dummy: | |
1688 | case bp_watchpoint_scope: | |
c906108c | 1689 | |
c5aa993b JM |
1690 | /* If the call dummy breakpoint is at the entry point it will |
1691 | cause problems when the inferior is rerun, so we better | |
1692 | get rid of it. | |
c906108c | 1693 | |
c5aa993b JM |
1694 | Also get rid of scope breakpoints. */ |
1695 | delete_breakpoint (b); | |
1696 | break; | |
c906108c | 1697 | |
c5aa993b JM |
1698 | case bp_watchpoint: |
1699 | case bp_hardware_watchpoint: | |
1700 | case bp_read_watchpoint: | |
1701 | case bp_access_watchpoint: | |
c906108c | 1702 | |
c5aa993b JM |
1703 | /* Likewise for watchpoints on local expressions. */ |
1704 | if (b->exp_valid_block != NULL) | |
1705 | delete_breakpoint (b); | |
967af18d | 1706 | else if (context == inf_starting) |
c860120c PM |
1707 | { |
1708 | /* Reset val field to force reread of starting value | |
1709 | in insert_breakpoints. */ | |
1710 | if (b->val) | |
1711 | value_free (b->val); | |
1712 | b->val = NULL; | |
1713 | } | |
c5aa993b JM |
1714 | break; |
1715 | default: | |
c5aa993b JM |
1716 | break; |
1717 | } | |
1718 | } | |
c906108c SS |
1719 | } |
1720 | ||
c2c6d25f JM |
1721 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1722 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1723 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1724 | permanent breakpoint. | |
1725 | - When continuing from a location with an ordinary breakpoint, we | |
1726 | actually single step once before calling insert_breakpoints. | |
1727 | - When continuing from a localion with a permanent breakpoint, we | |
1728 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1729 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1730 | |
c2c6d25f | 1731 | enum breakpoint_here |
fba45db2 | 1732 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1733 | { |
075f6582 | 1734 | struct bp_location *bpt; |
c2c6d25f | 1735 | int any_breakpoint_here = 0; |
c906108c | 1736 | |
075f6582 DJ |
1737 | ALL_BP_LOCATIONS (bpt) |
1738 | { | |
1739 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1740 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1741 | continue; | |
1742 | ||
468d015d | 1743 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1744 | || bpt->owner->enable_state == bp_permanent) |
1745 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1746 | { | |
1747 | if (overlay_debugging | |
1748 | && section_is_overlay (bpt->section) | |
1749 | && !section_is_mapped (bpt->section)) | |
1750 | continue; /* unmapped overlay -- can't be a match */ | |
1751 | else if (bpt->owner->enable_state == bp_permanent) | |
1752 | return permanent_breakpoint_here; | |
1753 | else | |
1754 | any_breakpoint_here = 1; | |
1755 | } | |
1756 | } | |
c906108c | 1757 | |
c2c6d25f | 1758 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1759 | } |
1760 | ||
c2c6d25f | 1761 | |
53a5351d JM |
1762 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1763 | but it only returns true if there is actually a breakpoint inserted | |
1764 | at PC. */ | |
c906108c SS |
1765 | |
1766 | int | |
fba45db2 | 1767 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1768 | { |
075f6582 | 1769 | struct bp_location *bpt; |
c906108c | 1770 | |
075f6582 | 1771 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1772 | { |
075f6582 DJ |
1773 | if (bpt->loc_type != bp_loc_software_breakpoint |
1774 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1775 | continue; | |
1776 | ||
1777 | if (bpt->inserted | |
1778 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1779 | { | |
1780 | if (overlay_debugging | |
1781 | && section_is_overlay (bpt->section) | |
1782 | && !section_is_mapped (bpt->section)) | |
1783 | continue; /* unmapped overlay -- can't be a match */ | |
1784 | else | |
1785 | return 1; | |
1786 | } | |
c5aa993b | 1787 | } |
c906108c | 1788 | |
1aafd4da UW |
1789 | /* Also check for software single-step breakpoints. */ |
1790 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1791 | return 1; | |
1792 | ||
c906108c SS |
1793 | return 0; |
1794 | } | |
1795 | ||
4fa8626c DJ |
1796 | /* This function returns non-zero iff there is a software breakpoint |
1797 | inserted at PC. */ | |
1798 | ||
1799 | int | |
1800 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1801 | { | |
1802 | struct bp_location *bpt; | |
1803 | int any_breakpoint_here = 0; | |
1804 | ||
1805 | ALL_BP_LOCATIONS (bpt) | |
1806 | { | |
1807 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1808 | continue; | |
1809 | ||
1810 | if ((breakpoint_enabled (bpt->owner) | |
1811 | || bpt->owner->enable_state == bp_permanent) | |
1812 | && bpt->inserted | |
1813 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1814 | { | |
1815 | if (overlay_debugging | |
1816 | && section_is_overlay (bpt->section) | |
1817 | && !section_is_mapped (bpt->section)) | |
1818 | continue; /* unmapped overlay -- can't be a match */ | |
1819 | else | |
1820 | return 1; | |
1821 | } | |
1822 | } | |
1823 | ||
1aafd4da UW |
1824 | /* Also check for software single-step breakpoints. */ |
1825 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1826 | return 1; | |
1827 | ||
4fa8626c DJ |
1828 | return 0; |
1829 | } | |
1830 | ||
075f6582 DJ |
1831 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1832 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1833 | |
1834 | int | |
39f77062 | 1835 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1836 | { |
075f6582 | 1837 | struct bp_location *bpt; |
c906108c SS |
1838 | int thread; |
1839 | ||
39f77062 | 1840 | thread = pid_to_thread_id (ptid); |
c906108c | 1841 | |
075f6582 | 1842 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1843 | { |
075f6582 DJ |
1844 | if (bpt->loc_type != bp_loc_software_breakpoint |
1845 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1846 | continue; | |
1847 | ||
468d015d | 1848 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1849 | || bpt->owner->enable_state == bp_permanent) |
1850 | && bpt->address == pc | |
1851 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1852 | { | |
1853 | if (overlay_debugging | |
1854 | && section_is_overlay (bpt->section) | |
1855 | && !section_is_mapped (bpt->section)) | |
1856 | continue; /* unmapped overlay -- can't be a match */ | |
1857 | else | |
1858 | return 1; | |
1859 | } | |
c5aa993b | 1860 | } |
c906108c SS |
1861 | |
1862 | return 0; | |
1863 | } | |
c906108c | 1864 | \f |
c5aa993b | 1865 | |
c906108c SS |
1866 | /* bpstat stuff. External routines' interfaces are documented |
1867 | in breakpoint.h. */ | |
1868 | ||
1869 | int | |
fba45db2 | 1870 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1871 | { |
1872 | return | |
1873 | (ep->type == bp_catch_load) | |
1874 | || (ep->type == bp_catch_unload) | |
1875 | || (ep->type == bp_catch_fork) | |
1876 | || (ep->type == bp_catch_vfork) | |
1877 | || (ep->type == bp_catch_exec) | |
1878 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1879 | || (ep->type == bp_catch_throw); |
c906108c | 1880 | |
c5aa993b | 1881 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1882 | } |
c5aa993b | 1883 | |
c906108c | 1884 | int |
fba45db2 | 1885 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1886 | { |
1887 | return | |
1888 | (ep->type == bp_catch_load) | |
d85310f7 | 1889 | || (ep->type == bp_catch_unload); |
c906108c SS |
1890 | } |
1891 | ||
1892 | int | |
fba45db2 | 1893 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1894 | { |
1895 | return | |
1896 | (ep->type == bp_catch_catch) | |
d85310f7 | 1897 | || (ep->type == bp_catch_throw); |
c906108c SS |
1898 | } |
1899 | ||
198757a8 VP |
1900 | void |
1901 | bpstat_free (bpstat bs) | |
1902 | { | |
1903 | if (bs->old_val != NULL) | |
1904 | value_free (bs->old_val); | |
1905 | free_command_lines (&bs->commands); | |
1906 | xfree (bs); | |
1907 | } | |
1908 | ||
c906108c SS |
1909 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1910 | Also free any storage that is part of a bpstat. */ | |
1911 | ||
1912 | void | |
fba45db2 | 1913 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1914 | { |
1915 | bpstat p; | |
1916 | bpstat q; | |
1917 | ||
1918 | if (bsp == 0) | |
1919 | return; | |
1920 | p = *bsp; | |
1921 | while (p != NULL) | |
1922 | { | |
1923 | q = p->next; | |
198757a8 | 1924 | bpstat_free (p); |
c906108c SS |
1925 | p = q; |
1926 | } | |
1927 | *bsp = NULL; | |
1928 | } | |
1929 | ||
1930 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1931 | is part of the bpstat is copied as well. */ | |
1932 | ||
1933 | bpstat | |
fba45db2 | 1934 | bpstat_copy (bpstat bs) |
c906108c SS |
1935 | { |
1936 | bpstat p = NULL; | |
1937 | bpstat tmp; | |
1938 | bpstat retval = NULL; | |
1939 | ||
1940 | if (bs == NULL) | |
1941 | return bs; | |
1942 | ||
1943 | for (; bs != NULL; bs = bs->next) | |
1944 | { | |
1945 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1946 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1947 | if (bs->commands != NULL) |
1948 | tmp->commands = copy_command_lines (bs->commands); | |
1949 | if (bs->old_val != NULL) | |
1950 | tmp->old_val = value_copy (bs->old_val); | |
1951 | ||
c906108c SS |
1952 | if (p == NULL) |
1953 | /* This is the first thing in the chain. */ | |
1954 | retval = tmp; | |
1955 | else | |
1956 | p->next = tmp; | |
1957 | p = tmp; | |
1958 | } | |
1959 | p->next = NULL; | |
1960 | return retval; | |
1961 | } | |
1962 | ||
1963 | /* Find the bpstat associated with this breakpoint */ | |
1964 | ||
1965 | bpstat | |
fba45db2 | 1966 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1967 | { |
c5aa993b JM |
1968 | if (bsp == NULL) |
1969 | return NULL; | |
c906108c | 1970 | |
c5aa993b JM |
1971 | for (; bsp != NULL; bsp = bsp->next) |
1972 | { | |
1973 | if (bsp->breakpoint_at == breakpoint) | |
1974 | return bsp; | |
1975 | } | |
c906108c SS |
1976 | return NULL; |
1977 | } | |
1978 | ||
1979 | /* Find a step_resume breakpoint associated with this bpstat. | |
1980 | (If there are multiple step_resume bp's on the list, this function | |
1981 | will arbitrarily pick one.) | |
1982 | ||
1983 | It is an error to use this function if BPSTAT doesn't contain a | |
1984 | step_resume breakpoint. | |
1985 | ||
1986 | See wait_for_inferior's use of this function. */ | |
1987 | struct breakpoint * | |
fba45db2 | 1988 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 1989 | { |
8601f500 MS |
1990 | int current_thread; |
1991 | ||
8a3fe4f8 | 1992 | gdb_assert (bsp != NULL); |
c906108c | 1993 | |
8601f500 MS |
1994 | current_thread = pid_to_thread_id (inferior_ptid); |
1995 | ||
c906108c SS |
1996 | for (; bsp != NULL; bsp = bsp->next) |
1997 | { | |
1998 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
1999 | (bsp->breakpoint_at->type == bp_step_resume) && |
2000 | (bsp->breakpoint_at->thread == current_thread || | |
2001 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 2002 | return bsp->breakpoint_at; |
c906108c SS |
2003 | } |
2004 | ||
8a3fe4f8 | 2005 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2006 | } |
2007 | ||
2008 | ||
8671a17b | 2009 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2010 | at. *BSP upon return is a bpstat which points to the remaining |
2011 | breakpoints stopped at (but which is not guaranteed to be good for | |
2012 | anything but further calls to bpstat_num). | |
8671a17b PA |
2013 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2014 | Return -1 if stopped at a breakpoint that has been deleted since | |
2015 | we set it. | |
2016 | Return 1 otherwise. */ | |
c906108c SS |
2017 | |
2018 | int | |
8671a17b | 2019 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2020 | { |
2021 | struct breakpoint *b; | |
2022 | ||
2023 | if ((*bsp) == NULL) | |
2024 | return 0; /* No more breakpoint values */ | |
8671a17b PA |
2025 | |
2026 | b = (*bsp)->breakpoint_at; | |
2027 | *bsp = (*bsp)->next; | |
2028 | if (b == NULL) | |
2029 | return -1; /* breakpoint that's been deleted since */ | |
2030 | ||
2031 | *num = b->number; /* We have its number */ | |
2032 | return 1; | |
c906108c SS |
2033 | } |
2034 | ||
2035 | /* Modify BS so that the actions will not be performed. */ | |
2036 | ||
2037 | void | |
fba45db2 | 2038 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2039 | { |
2040 | for (; bs != NULL; bs = bs->next) | |
2041 | { | |
c2b8ed2c | 2042 | free_command_lines (&bs->commands); |
c906108c SS |
2043 | if (bs->old_val != NULL) |
2044 | { | |
2045 | value_free (bs->old_val); | |
2046 | bs->old_val = NULL; | |
2047 | } | |
2048 | } | |
2049 | } | |
2050 | ||
2051 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2052 | static void |
4efb68b1 | 2053 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2054 | { |
2055 | executing_breakpoint_commands = 0; | |
2056 | } | |
2057 | ||
2058 | /* Execute all the commands associated with all the breakpoints at this | |
2059 | location. Any of these commands could cause the process to proceed | |
2060 | beyond this point, etc. We look out for such changes by checking | |
2061 | the global "breakpoint_proceeded" after each command. */ | |
2062 | ||
2063 | void | |
fba45db2 | 2064 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2065 | { |
2066 | bpstat bs; | |
2067 | struct cleanup *old_chain; | |
c906108c SS |
2068 | |
2069 | /* Avoid endless recursion if a `source' command is contained | |
2070 | in bs->commands. */ | |
2071 | if (executing_breakpoint_commands) | |
2072 | return; | |
2073 | ||
2074 | executing_breakpoint_commands = 1; | |
2075 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2076 | ||
2077 | top: | |
2078 | /* Note that (as of this writing), our callers all appear to | |
2079 | be passing us the address of global stop_bpstat. And, if | |
2080 | our calls to execute_control_command cause the inferior to | |
2081 | proceed, that global (and hence, *bsp) will change. | |
2082 | ||
2083 | We must be careful to not touch *bsp unless the inferior | |
2084 | has not proceeded. */ | |
2085 | ||
2086 | /* This pointer will iterate over the list of bpstat's. */ | |
2087 | bs = *bsp; | |
2088 | ||
2089 | breakpoint_proceeded = 0; | |
2090 | for (; bs != NULL; bs = bs->next) | |
2091 | { | |
6c50ab1c JB |
2092 | struct command_line *cmd; |
2093 | struct cleanup *this_cmd_tree_chain; | |
2094 | ||
2095 | /* Take ownership of the BSP's command tree, if it has one. | |
2096 | ||
2097 | The command tree could legitimately contain commands like | |
2098 | 'step' and 'next', which call clear_proceed_status, which | |
2099 | frees stop_bpstat's command tree. To make sure this doesn't | |
2100 | free the tree we're executing out from under us, we need to | |
2101 | take ownership of the tree ourselves. Since a given bpstat's | |
2102 | commands are only executed once, we don't need to copy it; we | |
2103 | can clear the pointer in the bpstat, and make sure we free | |
2104 | the tree when we're done. */ | |
c906108c | 2105 | cmd = bs->commands; |
6c50ab1c JB |
2106 | bs->commands = 0; |
2107 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2108 | ||
c906108c SS |
2109 | while (cmd != NULL) |
2110 | { | |
2111 | execute_control_command (cmd); | |
2112 | ||
2113 | if (breakpoint_proceeded) | |
2114 | break; | |
2115 | else | |
2116 | cmd = cmd->next; | |
2117 | } | |
6c50ab1c JB |
2118 | |
2119 | /* We can free this command tree now. */ | |
2120 | do_cleanups (this_cmd_tree_chain); | |
2121 | ||
c906108c SS |
2122 | if (breakpoint_proceeded) |
2123 | /* The inferior is proceeded by the command; bomb out now. | |
2124 | The bpstat chain has been blown away by wait_for_inferior. | |
2125 | But since execution has stopped again, there is a new bpstat | |
2126 | to look at, so start over. */ | |
2127 | goto top; | |
c906108c | 2128 | } |
c2b8ed2c | 2129 | do_cleanups (old_chain); |
c906108c SS |
2130 | } |
2131 | ||
e514a9d6 | 2132 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2133 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2134 | by having it set different print_it values. |
2135 | ||
2136 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2137 | through the bpstat list of things causing this stop, calling the | |
2138 | print_bp_stop_message function on each one. The behavior of the | |
2139 | print_bp_stop_message function depends on the print_it field of | |
2140 | bpstat. If such field so indicates, call this function here. | |
2141 | ||
2142 | Return values from this routine (ultimately used by bpstat_print() | |
2143 | and normal_stop() to decide what to do): | |
2144 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2145 | don't print anything else. | |
2146 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2147 | that something to be followed by a location. | |
2148 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2149 | that something to be followed by a location. | |
2150 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2151 | analysis. */ | |
c906108c | 2152 | |
917317f4 | 2153 | static enum print_stop_action |
fba45db2 | 2154 | print_it_typical (bpstat bs) |
c906108c | 2155 | { |
3b31d625 | 2156 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2157 | struct ui_stream *stb; |
2158 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2159 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2160 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2161 | which has since been deleted. */ | |
e514a9d6 | 2162 | if (bs->breakpoint_at == NULL) |
917317f4 | 2163 | return PRINT_UNKNOWN; |
c906108c | 2164 | |
e514a9d6 | 2165 | switch (bs->breakpoint_at->type) |
c906108c | 2166 | { |
e514a9d6 JM |
2167 | case bp_breakpoint: |
2168 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2169 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2170 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2171 | bs->breakpoint_at->loc->address, | |
76897487 | 2172 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2173 | annotate_breakpoint (bs->breakpoint_at->number); |
2174 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2175 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2176 | ui_out_field_string (uiout, "reason", |
2177 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8b93c638 JM |
2178 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2179 | ui_out_text (uiout, ", "); | |
2180 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2181 | break; |
2182 | ||
2183 | case bp_shlib_event: | |
917317f4 JM |
2184 | /* Did we stop because the user set the stop_on_solib_events |
2185 | variable? (If so, we report this as a generic, "Stopped due | |
2186 | to shlib event" message.) */ | |
a3f17187 | 2187 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2188 | return PRINT_NOTHING; |
2189 | break; | |
2190 | ||
c4093a6a JM |
2191 | case bp_thread_event: |
2192 | /* Not sure how we will get here. | |
2193 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2194 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2195 | return PRINT_NOTHING; |
2196 | break; | |
2197 | ||
1900040c MS |
2198 | case bp_overlay_event: |
2199 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2200 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2201 | return PRINT_NOTHING; |
2202 | break; | |
2203 | ||
e514a9d6 | 2204 | case bp_catch_load: |
c906108c | 2205 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 AC |
2206 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
2207 | bs->breakpoint_at->number, | |
2208 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2209 | return PRINT_SRC_AND_LOC; |
2210 | break; | |
2211 | ||
2212 | case bp_catch_unload: | |
2213 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2214 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
2215 | bs->breakpoint_at->number, | |
2216 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2217 | return PRINT_SRC_AND_LOC; |
2218 | break; | |
2219 | ||
2220 | case bp_catch_fork: | |
2221 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2222 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
2223 | bs->breakpoint_at->number, | |
53a5351d | 2224 | bs->breakpoint_at->forked_inferior_pid); |
917317f4 | 2225 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2226 | break; |
2227 | ||
2228 | case bp_catch_vfork: | |
2229 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2230 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
2231 | bs->breakpoint_at->number, | |
e514a9d6 JM |
2232 | bs->breakpoint_at->forked_inferior_pid); |
2233 | return PRINT_SRC_AND_LOC; | |
2234 | break; | |
2235 | ||
2236 | case bp_catch_exec: | |
c906108c | 2237 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 | 2238 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
c5aa993b JM |
2239 | bs->breakpoint_at->number, |
2240 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2241 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2242 | break; |
2243 | ||
2244 | case bp_catch_catch: | |
53a5351d JM |
2245 | if (current_exception_event && |
2246 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2247 | { |
2248 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2249 | printf_filtered (_("\nCatchpoint %d (exception caught), "), |
53a5351d | 2250 | bs->breakpoint_at->number); |
c5aa993b | 2251 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2252 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2253 | CURRENT_EXCEPTION_THROW_FILE, |
2254 | CURRENT_EXCEPTION_THROW_LINE); | |
2255 | else | |
a3f17187 | 2256 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2257 | |
c5aa993b | 2258 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2259 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2260 | CURRENT_EXCEPTION_CATCH_FILE, |
2261 | CURRENT_EXCEPTION_CATCH_LINE); | |
2262 | else | |
a3f17187 | 2263 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2264 | |
e514a9d6 JM |
2265 | /* don't bother to print location frame info */ |
2266 | return PRINT_SRC_ONLY; | |
c5aa993b | 2267 | } |
c906108c | 2268 | else |
c5aa993b | 2269 | { |
e514a9d6 JM |
2270 | /* really throw, some other bpstat will handle it */ |
2271 | return PRINT_UNKNOWN; | |
c5aa993b | 2272 | } |
e514a9d6 JM |
2273 | break; |
2274 | ||
2275 | case bp_catch_throw: | |
53a5351d JM |
2276 | if (current_exception_event && |
2277 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2278 | { |
2279 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2280 | printf_filtered (_("\nCatchpoint %d (exception thrown), "), |
53a5351d | 2281 | bs->breakpoint_at->number); |
c5aa993b | 2282 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2283 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2284 | CURRENT_EXCEPTION_THROW_FILE, |
2285 | CURRENT_EXCEPTION_THROW_LINE); | |
2286 | else | |
a3f17187 | 2287 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2288 | |
c5aa993b | 2289 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2290 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2291 | CURRENT_EXCEPTION_CATCH_FILE, |
2292 | CURRENT_EXCEPTION_CATCH_LINE); | |
2293 | else | |
a3f17187 | 2294 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2295 | |
e514a9d6 JM |
2296 | /* don't bother to print location frame info */ |
2297 | return PRINT_SRC_ONLY; | |
c5aa993b | 2298 | } |
c906108c | 2299 | else |
c5aa993b | 2300 | { |
e514a9d6 JM |
2301 | /* really catch, some other bpstat will handle it */ |
2302 | return PRINT_UNKNOWN; | |
c5aa993b | 2303 | } |
e514a9d6 | 2304 | break; |
c906108c | 2305 | |
e514a9d6 JM |
2306 | case bp_watchpoint: |
2307 | case bp_hardware_watchpoint: | |
2308 | if (bs->old_val != NULL) | |
2309 | { | |
2310 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2311 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2312 | ui_out_field_string |
2313 | (uiout, "reason", | |
2314 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2315 | mention (bs->breakpoint_at); |
3b31d625 | 2316 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2317 | ui_out_text (uiout, "\nOld value = "); |
2318 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2319 | ui_out_field_stream (uiout, "old", stb); | |
2320 | ui_out_text (uiout, "\nNew value = "); | |
2321 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2322 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2323 | do_cleanups (ui_out_chain); |
8b93c638 | 2324 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2325 | value_free (bs->old_val); |
2326 | bs->old_val = NULL; | |
2327 | } | |
2328 | /* More than one watchpoint may have been triggered. */ | |
2329 | return PRINT_UNKNOWN; | |
2330 | break; | |
2331 | ||
2332 | case bp_read_watchpoint: | |
9dc5e2a9 | 2333 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2334 | ui_out_field_string |
2335 | (uiout, "reason", | |
2336 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2337 | mention (bs->breakpoint_at); |
3b31d625 | 2338 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2339 | ui_out_text (uiout, "\nValue = "); |
2340 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2341 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2342 | do_cleanups (ui_out_chain); |
8b93c638 | 2343 | ui_out_text (uiout, "\n"); |
917317f4 | 2344 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2345 | break; |
2346 | ||
2347 | case bp_access_watchpoint: | |
8b93c638 JM |
2348 | if (bs->old_val != NULL) |
2349 | { | |
2350 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2351 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2352 | ui_out_field_string |
2353 | (uiout, "reason", | |
2354 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2355 | mention (bs->breakpoint_at); |
3b31d625 | 2356 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2357 | ui_out_text (uiout, "\nOld value = "); |
2358 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2359 | ui_out_field_stream (uiout, "old", stb); | |
2360 | value_free (bs->old_val); | |
2361 | bs->old_val = NULL; | |
2362 | ui_out_text (uiout, "\nNew value = "); | |
2363 | } | |
2364 | else | |
2365 | { | |
2366 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2367 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2368 | ui_out_field_string |
2369 | (uiout, "reason", | |
2370 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2371 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2372 | ui_out_text (uiout, "\nValue = "); |
2373 | } | |
2374 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2375 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2376 | do_cleanups (ui_out_chain); |
8b93c638 | 2377 | ui_out_text (uiout, "\n"); |
917317f4 | 2378 | return PRINT_UNKNOWN; |
e514a9d6 | 2379 | break; |
4ce44c66 | 2380 | |
e514a9d6 JM |
2381 | /* Fall through, we don't deal with these types of breakpoints |
2382 | here. */ | |
2383 | ||
11cf8741 | 2384 | case bp_finish: |
9dc5e2a9 | 2385 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2386 | ui_out_field_string |
2387 | (uiout, "reason", | |
2388 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2389 | return PRINT_UNKNOWN; |
2390 | break; | |
2391 | ||
e514a9d6 | 2392 | case bp_until: |
9dc5e2a9 | 2393 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2394 | ui_out_field_string |
2395 | (uiout, "reason", | |
2396 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2397 | return PRINT_UNKNOWN; |
2398 | break; | |
2399 | ||
c2d11a7d | 2400 | case bp_none: |
e514a9d6 JM |
2401 | case bp_longjmp: |
2402 | case bp_longjmp_resume: | |
2403 | case bp_step_resume: | |
e514a9d6 JM |
2404 | case bp_watchpoint_scope: |
2405 | case bp_call_dummy: | |
2406 | default: | |
2407 | return PRINT_UNKNOWN; | |
2408 | } | |
2409 | } | |
2410 | ||
2411 | /* Generic routine for printing messages indicating why we | |
2412 | stopped. The behavior of this function depends on the value | |
2413 | 'print_it' in the bpstat structure. Under some circumstances we | |
2414 | may decide not to print anything here and delegate the task to | |
2415 | normal_stop(). */ | |
2416 | ||
2417 | static enum print_stop_action | |
2418 | print_bp_stop_message (bpstat bs) | |
2419 | { | |
2420 | switch (bs->print_it) | |
2421 | { | |
2422 | case print_it_noop: | |
2423 | /* Nothing should be printed for this bpstat entry. */ | |
2424 | return PRINT_UNKNOWN; | |
2425 | break; | |
2426 | ||
2427 | case print_it_done: | |
2428 | /* We still want to print the frame, but we already printed the | |
2429 | relevant messages. */ | |
2430 | return PRINT_SRC_AND_LOC; | |
2431 | break; | |
2432 | ||
2433 | case print_it_normal: | |
3086aeae DJ |
2434 | /* Normal case. Call the breakpoint's print_it method, or |
2435 | print_it_typical. */ | |
2436 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2437 | && bs->breakpoint_at->ops->print_it != NULL) | |
2438 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2439 | else | |
2440 | return print_it_typical (bs); | |
e514a9d6 | 2441 | break; |
3086aeae | 2442 | |
e514a9d6 | 2443 | default: |
8e65ff28 | 2444 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2445 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2446 | break; |
c906108c | 2447 | } |
c906108c SS |
2448 | } |
2449 | ||
e514a9d6 JM |
2450 | /* Print a message indicating what happened. This is called from |
2451 | normal_stop(). The input to this routine is the head of the bpstat | |
2452 | list - a list of the eventpoints that caused this stop. This | |
2453 | routine calls the generic print routine for printing a message | |
2454 | about reasons for stopping. This will print (for example) the | |
2455 | "Breakpoint n," part of the output. The return value of this | |
2456 | routine is one of: | |
c906108c | 2457 | |
917317f4 JM |
2458 | PRINT_UNKNOWN: Means we printed nothing |
2459 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2460 | code to print the location. An example is |
2461 | "Breakpoint 1, " which should be followed by | |
2462 | the location. | |
917317f4 | 2463 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2464 | to also print the location part of the message. |
2465 | An example is the catch/throw messages, which | |
917317f4 JM |
2466 | don't require a location appended to the end. |
2467 | PRINT_NOTHING: We have done some printing and we don't need any | |
2468 | further info to be printed.*/ | |
c906108c | 2469 | |
917317f4 | 2470 | enum print_stop_action |
fba45db2 | 2471 | bpstat_print (bpstat bs) |
c906108c SS |
2472 | { |
2473 | int val; | |
c5aa993b | 2474 | |
c906108c | 2475 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2476 | (Currently all watchpoints go on the bpstat whether hit or not. |
2477 | That probably could (should) be changed, provided care is taken | |
c906108c | 2478 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2479 | for (; bs; bs = bs->next) |
2480 | { | |
2481 | val = print_bp_stop_message (bs); | |
2482 | if (val == PRINT_SRC_ONLY | |
2483 | || val == PRINT_SRC_AND_LOC | |
2484 | || val == PRINT_NOTHING) | |
2485 | return val; | |
2486 | } | |
c906108c | 2487 | |
e514a9d6 JM |
2488 | /* We reached the end of the chain, or we got a null BS to start |
2489 | with and nothing was printed. */ | |
917317f4 | 2490 | return PRINT_UNKNOWN; |
c906108c SS |
2491 | } |
2492 | ||
2493 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2494 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2495 | The argument is a "struct expression *" that has been cast to char * to | |
2496 | make it pass through catch_errors. */ | |
2497 | ||
2498 | static int | |
4efb68b1 | 2499 | breakpoint_cond_eval (void *exp) |
c906108c | 2500 | { |
278cd55f | 2501 | struct value *mark = value_mark (); |
c5aa993b | 2502 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2503 | value_free_to_mark (mark); |
2504 | return i; | |
2505 | } | |
2506 | ||
2507 | /* Allocate a new bpstat and chain it to the current one. */ | |
2508 | ||
2509 | static bpstat | |
831662b3 | 2510 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2511 | { |
2512 | bpstat bs; | |
2513 | ||
2514 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2515 | cbs->next = bs; | |
2516 | bs->breakpoint_at = b; | |
2517 | /* If the condition is false, etc., don't do the commands. */ | |
2518 | bs->commands = NULL; | |
2519 | bs->old_val = NULL; | |
2520 | bs->print_it = print_it_normal; | |
2521 | return bs; | |
2522 | } | |
2523 | \f | |
2524 | /* Possible return values for watchpoint_check (this can't be an enum | |
2525 | because of check_errors). */ | |
2526 | /* The watchpoint has been deleted. */ | |
2527 | #define WP_DELETED 1 | |
2528 | /* The value has changed. */ | |
2529 | #define WP_VALUE_CHANGED 2 | |
2530 | /* The value has not changed. */ | |
2531 | #define WP_VALUE_NOT_CHANGED 3 | |
2532 | ||
2533 | #define BP_TEMPFLAG 1 | |
2534 | #define BP_HARDWAREFLAG 2 | |
2535 | ||
2536 | /* Check watchpoint condition. */ | |
2537 | ||
2538 | static int | |
4efb68b1 | 2539 | watchpoint_check (void *p) |
c906108c SS |
2540 | { |
2541 | bpstat bs = (bpstat) p; | |
2542 | struct breakpoint *b; | |
2543 | struct frame_info *fr; | |
2544 | int within_current_scope; | |
2545 | ||
2546 | b = bs->breakpoint_at; | |
2547 | ||
2548 | if (b->exp_valid_block == NULL) | |
2549 | within_current_scope = 1; | |
2550 | else | |
2551 | { | |
2552 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2553 | any chance of handling watchpoints on local variables, we'll need |
2554 | the frame chain (so we can determine if we're in scope). */ | |
2555 | reinit_frame_cache (); | |
101dcfbe | 2556 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2557 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2558 | |
2559 | /* If we've gotten confused in the unwinder, we might have | |
2560 | returned a frame that can't describe this variable. */ | |
2561 | if (within_current_scope | |
2562 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2563 | within_current_scope = 0; | |
2564 | ||
c12260ac CV |
2565 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2566 | in the function but the stack frame has already been invalidated. | |
2567 | Since we can't rely on the values of local variables after the | |
2568 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2569 | state as `not changed' without further checking. |
2570 | ||
2571 | vinschen/2003-09-04: The former implementation left out the case | |
2572 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2573 | because the current PC is currently in an epilogue. Calling | |
2574 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2575 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2576 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2577 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2578 | if (fr && within_current_scope) |
c906108c SS |
2579 | /* If we end up stopping, the current frame will get selected |
2580 | in normal_stop. So this call to select_frame won't affect | |
2581 | the user. */ | |
0f7d239c | 2582 | select_frame (fr); |
c906108c | 2583 | } |
c5aa993b | 2584 | |
c906108c SS |
2585 | if (within_current_scope) |
2586 | { | |
2587 | /* We use value_{,free_to_}mark because it could be a | |
2588 | *long* time before we return to the command level and | |
c5aa993b JM |
2589 | call free_all_values. We can't call free_all_values because |
2590 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2591 | |
278cd55f AC |
2592 | struct value *mark = value_mark (); |
2593 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2594 | if (!value_equal (b->val, new_val)) |
2595 | { | |
2596 | release_value (new_val); | |
2597 | value_free_to_mark (mark); | |
2598 | bs->old_val = b->val; | |
2599 | b->val = new_val; | |
2600 | /* We will stop here */ | |
2601 | return WP_VALUE_CHANGED; | |
2602 | } | |
2603 | else | |
2604 | { | |
2605 | /* Nothing changed, don't do anything. */ | |
2606 | value_free_to_mark (mark); | |
2607 | /* We won't stop here */ | |
2608 | return WP_VALUE_NOT_CHANGED; | |
2609 | } | |
2610 | } | |
2611 | else | |
2612 | { | |
2613 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2614 | if we temporarily ignored the watchpoint, then when |
2615 | we reenter the block in which it is valid it contains | |
2616 | garbage (in the case of a function, it may have two | |
2617 | garbage values, one before and one after the prologue). | |
2618 | So we can't even detect the first assignment to it and | |
2619 | watch after that (since the garbage may or may not equal | |
2620 | the first value assigned). */ | |
4ce44c66 JM |
2621 | /* We print all the stop information in print_it_typical(), but |
2622 | in this case, by the time we call print_it_typical() this bp | |
2623 | will be deleted already. So we have no choice but print the | |
2624 | information here. */ | |
9dc5e2a9 | 2625 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2626 | ui_out_field_string |
2627 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 JM |
2628 | ui_out_text (uiout, "\nWatchpoint "); |
2629 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2630 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2631 | which its expression is valid.\n"); | |
4ce44c66 | 2632 | |
c906108c | 2633 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2634 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2635 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2636 | |
2637 | return WP_DELETED; | |
2638 | } | |
2639 | } | |
2640 | ||
9709f61c | 2641 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2642 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2643 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2644 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2645 | |
2646 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2647 | don't understand this stop. Result is a chain of bpstat's such that: | |
2648 | ||
c5aa993b | 2649 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2650 | |
c5aa993b | 2651 | if we understand why we stopped, the result is not null. |
c906108c | 2652 | |
c5aa993b JM |
2653 | Each element of the chain refers to a particular breakpoint or |
2654 | watchpoint at which we have stopped. (We may have stopped for | |
2655 | several reasons concurrently.) | |
c906108c | 2656 | |
c5aa993b JM |
2657 | Each element of the chain has valid next, breakpoint_at, |
2658 | commands, FIXME??? fields. */ | |
c906108c SS |
2659 | |
2660 | bpstat | |
00d4360e | 2661 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2662 | { |
52f0bd74 | 2663 | struct breakpoint *b, *temp; |
c906108c SS |
2664 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2665 | int real_breakpoint = 0; | |
2666 | /* Root of the chain of bpstat's */ | |
2667 | struct bpstats root_bs[1]; | |
2668 | /* Pointer to the last thing in the chain currently. */ | |
2669 | bpstat bs = root_bs; | |
fa5281d0 | 2670 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2671 | |
c906108c | 2672 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2673 | { |
468d015d | 2674 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2675 | continue; |
2676 | ||
2677 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2678 | && b->type != bp_hardware_watchpoint |
2679 | && b->type != bp_read_watchpoint | |
2680 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2681 | && b->type != bp_hardware_breakpoint |
2682 | && b->type != bp_catch_fork | |
2683 | && b->type != bp_catch_vfork | |
2684 | && b->type != bp_catch_exec | |
2685 | && b->type != bp_catch_catch | |
2686 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2687 | { |
5cab636d | 2688 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2689 | continue; |
2690 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2691 | && section_is_overlay (b->loc->section) |
2692 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2693 | continue; |
2694 | } | |
c906108c | 2695 | |
46587c42 JJ |
2696 | /* Continuable hardware watchpoints are treated as non-existent if the |
2697 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2698 | some data address). Otherwise gdb won't stop on a break instruction | |
2699 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2700 | been defined. */ | |
2701 | ||
2702 | if ((b->type == bp_hardware_watchpoint | |
2703 | || b->type == bp_read_watchpoint | |
2704 | || b->type == bp_access_watchpoint) | |
2705 | && !stopped_by_watchpoint) | |
2706 | continue; | |
2707 | ||
c02f5703 MS |
2708 | if (b->type == bp_hardware_breakpoint) |
2709 | { | |
9709f61c | 2710 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2711 | continue; |
2712 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2713 | && section_is_overlay (b->loc->section) |
2714 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2715 | continue; |
2716 | } | |
c5aa993b | 2717 | |
c5aa993b JM |
2718 | /* Is this a catchpoint of a load or unload? If so, did we |
2719 | get a load or unload of the specified library? If not, | |
2720 | ignore it. */ | |
2721 | if ((b->type == bp_catch_load) | |
c906108c | 2722 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2723 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2724 | || ((b->dll_pathname != NULL) |
53a5351d | 2725 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2726 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2727 | PIDGET (inferior_ptid))) | |
53a5351d | 2728 | != 0))) |
c906108c | 2729 | #endif |
c5aa993b JM |
2730 | ) |
2731 | continue; | |
2732 | ||
2733 | if ((b->type == bp_catch_unload) | |
c906108c | 2734 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2735 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2736 | || ((b->dll_pathname != NULL) |
53a5351d | 2737 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2738 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2739 | PIDGET (inferior_ptid))) | |
53a5351d | 2740 | != 0))) |
c906108c | 2741 | #endif |
c5aa993b JM |
2742 | ) |
2743 | continue; | |
c906108c | 2744 | |
c5aa993b | 2745 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2746 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2747 | &b->forked_inferior_pid)) | |
c5aa993b | 2748 | continue; |
c906108c | 2749 | |
c5aa993b | 2750 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2751 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2752 | &b->forked_inferior_pid)) | |
c5aa993b | 2753 | continue; |
c906108c | 2754 | |
c5aa993b | 2755 | if ((b->type == bp_catch_exec) |
47932f85 | 2756 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2757 | continue; |
c906108c | 2758 | |
c5aa993b JM |
2759 | if (ep_is_exception_catchpoint (b) && |
2760 | !(current_exception_event = target_get_current_exception_event ())) | |
2761 | continue; | |
c906108c | 2762 | |
c5aa993b JM |
2763 | /* Come here if it's a watchpoint, or if the break address matches */ |
2764 | ||
2765 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2766 | ||
2767 | /* Watchpoints may change this, if not found to have triggered. */ | |
2768 | bs->stop = 1; | |
2769 | bs->print = 1; | |
2770 | ||
53a5351d JM |
2771 | if (b->type == bp_watchpoint || |
2772 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2773 | { |
9ebf4acf AC |
2774 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2775 | b->number); | |
2776 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2777 | int e = catch_errors (watchpoint_check, bs, message, | |
2778 | RETURN_MASK_ALL); | |
2779 | do_cleanups (cleanups); | |
2780 | switch (e) | |
c5aa993b JM |
2781 | { |
2782 | case WP_DELETED: | |
2783 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2784 | /* Actually this is superfluous, because by the time we |
2785 | call print_it_typical() the wp will be already deleted, | |
2786 | and the function will return immediately. */ | |
c5aa993b JM |
2787 | bs->print_it = print_it_done; |
2788 | /* Stop. */ | |
2789 | break; | |
2790 | case WP_VALUE_CHANGED: | |
2791 | /* Stop. */ | |
2792 | ++(b->hit_count); | |
2793 | break; | |
2794 | case WP_VALUE_NOT_CHANGED: | |
2795 | /* Don't stop. */ | |
2796 | bs->print_it = print_it_noop; | |
2797 | bs->stop = 0; | |
c5aa993b JM |
2798 | continue; |
2799 | default: | |
2800 | /* Can't happen. */ | |
2801 | /* FALLTHROUGH */ | |
2802 | case 0: | |
2803 | /* Error from catch_errors. */ | |
a3f17187 | 2804 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
c5aa993b | 2805 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2806 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2807 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2808 | /* We've already printed what needs to be printed. */ |
2809 | bs->print_it = print_it_done; | |
2810 | ||
2811 | /* Stop. */ | |
2812 | break; | |
2813 | } | |
2814 | } | |
53a5351d JM |
2815 | else if (b->type == bp_read_watchpoint || |
2816 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2817 | { |
2818 | CORE_ADDR addr; | |
278cd55f | 2819 | struct value *v; |
c5aa993b JM |
2820 | int found = 0; |
2821 | ||
4aa7a7f5 | 2822 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b | 2823 | continue; |
17cf0ecd | 2824 | for (v = b->val_chain; v; v = value_next (v)) |
c5aa993b | 2825 | { |
5c44784c | 2826 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 2827 | && ! value_lazy (v)) |
c5aa993b | 2828 | { |
df407dfe | 2829 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2830 | |
2831 | if (v == b->val_chain | |
2832 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2833 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2834 | { | |
2835 | CORE_ADDR vaddr; | |
2836 | ||
df407dfe | 2837 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2838 | /* Exact match not required. Within range is |
2839 | sufficient. */ | |
2840 | if (addr >= vaddr && | |
df407dfe | 2841 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2842 | found = 1; |
2843 | } | |
c5aa993b JM |
2844 | } |
2845 | } | |
2846 | if (found) | |
9ebf4acf AC |
2847 | { |
2848 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2849 | b->number); | |
2850 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2851 | int e = catch_errors (watchpoint_check, bs, message, | |
2852 | RETURN_MASK_ALL); | |
2853 | do_cleanups (cleanups); | |
2854 | switch (e) | |
2855 | { | |
2856 | case WP_DELETED: | |
2857 | /* We've already printed what needs to be printed. */ | |
2858 | bs->print_it = print_it_done; | |
2859 | /* Stop. */ | |
2860 | break; | |
2861 | case WP_VALUE_CHANGED: | |
2862 | if (b->type == bp_read_watchpoint) | |
2863 | { | |
2864 | /* Don't stop: read watchpoints shouldn't fire if | |
2865 | the value has changed. This is for targets | |
2866 | which cannot set read-only watchpoints. */ | |
2867 | bs->print_it = print_it_noop; | |
2868 | bs->stop = 0; | |
2869 | continue; | |
2870 | } | |
2871 | ++(b->hit_count); | |
2872 | break; | |
2873 | case WP_VALUE_NOT_CHANGED: | |
2874 | /* Stop. */ | |
2875 | ++(b->hit_count); | |
2876 | break; | |
2877 | default: | |
2878 | /* Can't happen. */ | |
2879 | case 0: | |
2880 | /* Error from catch_errors. */ | |
a3f17187 | 2881 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
9ebf4acf AC |
2882 | if (b->related_breakpoint) |
2883 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2884 | b->disposition = disp_del_at_next_stop; | |
2885 | /* We've already printed what needs to be printed. */ | |
2886 | bs->print_it = print_it_done; | |
2887 | break; | |
2888 | } | |
2889 | } | |
53a5351d JM |
2890 | else /* found == 0 */ |
2891 | { | |
2892 | /* This is a case where some watchpoint(s) triggered, | |
2893 | but not at the address of this watchpoint (FOUND | |
2894 | was left zero). So don't print anything for this | |
2895 | watchpoint. */ | |
2896 | bs->print_it = print_it_noop; | |
2897 | bs->stop = 0; | |
2898 | continue; | |
2899 | } | |
c5aa993b JM |
2900 | } |
2901 | else | |
2902 | { | |
2903 | /* By definition, an encountered breakpoint is a triggered | |
2904 | breakpoint. */ | |
2905 | ++(b->hit_count); | |
c906108c | 2906 | |
c5aa993b JM |
2907 | real_breakpoint = 1; |
2908 | } | |
2909 | ||
818dd999 AC |
2910 | if (frame_id_p (b->frame_id) |
2911 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2912 | bs->stop = 0; |
2913 | else | |
2914 | { | |
2915 | int value_is_zero = 0; | |
2916 | ||
2917 | if (b->cond) | |
2918 | { | |
2919 | /* Need to select the frame, with all that implies | |
2920 | so that the conditions will have the right context. */ | |
0f7d239c | 2921 | select_frame (get_current_frame ()); |
c5aa993b JM |
2922 | value_is_zero |
2923 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2924 | "Error in testing breakpoint condition:\n", | |
2925 | RETURN_MASK_ALL); | |
2926 | /* FIXME-someday, should give breakpoint # */ | |
2927 | free_all_values (); | |
2928 | } | |
2929 | if (b->cond && value_is_zero) | |
2930 | { | |
2931 | bs->stop = 0; | |
2932 | /* Don't consider this a hit. */ | |
2933 | --(b->hit_count); | |
2934 | } | |
fa5281d0 DJ |
2935 | else if (b->thread != -1 && b->thread != thread_id) |
2936 | { | |
2937 | bs->stop = 0; | |
2938 | /* Don't consider this a hit. */ | |
2939 | --(b->hit_count); | |
2940 | } | |
c5aa993b JM |
2941 | else if (b->ignore_count > 0) |
2942 | { | |
2943 | b->ignore_count--; | |
5c44784c | 2944 | annotate_ignore_count_change (); |
c5aa993b JM |
2945 | bs->stop = 0; |
2946 | } | |
2947 | else | |
2948 | { | |
2949 | /* We will stop here */ | |
b5de0fa7 EZ |
2950 | if (b->disposition == disp_disable) |
2951 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2952 | if (b->silent) |
2953 | bs->print = 0; | |
552f4abf | 2954 | bs->commands = b->commands; |
c5aa993b | 2955 | if (bs->commands && |
6314a349 AC |
2956 | (strcmp ("silent", bs->commands->line) == 0 |
2957 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
2958 | { |
2959 | bs->commands = bs->commands->next; | |
c906108c | 2960 | bs->print = 0; |
c5aa993b | 2961 | } |
552f4abf | 2962 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
2963 | } |
2964 | } | |
2965 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2966 | if (bs->stop == 0 || bs->print == 0) | |
2967 | bs->print_it = print_it_noop; | |
2968 | } | |
c906108c SS |
2969 | |
2970 | bs->next = NULL; /* Terminate the chain */ | |
2971 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2972 | ||
c906108c SS |
2973 | /* The value of a hardware watchpoint hasn't changed, but the |
2974 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2975 | if (bs && !bs->stop && |
c906108c SS |
2976 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2977 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2978 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2979 | { | |
2980 | remove_breakpoints (); | |
2981 | insert_breakpoints (); | |
2982 | } | |
2983 | return bs; | |
2984 | } | |
2985 | \f | |
2986 | /* Tell what to do about this bpstat. */ | |
2987 | struct bpstat_what | |
fba45db2 | 2988 | bpstat_what (bpstat bs) |
c906108c SS |
2989 | { |
2990 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2991 | enum class |
2992 | { | |
2993 | /* This bpstat element has no effect on the main_action. */ | |
2994 | no_effect = 0, | |
2995 | ||
2996 | /* There was a watchpoint, stop but don't print. */ | |
2997 | wp_silent, | |
c906108c | 2998 | |
c5aa993b JM |
2999 | /* There was a watchpoint, stop and print. */ |
3000 | wp_noisy, | |
c906108c | 3001 | |
c5aa993b JM |
3002 | /* There was a breakpoint but we're not stopping. */ |
3003 | bp_nostop, | |
c906108c | 3004 | |
c5aa993b JM |
3005 | /* There was a breakpoint, stop but don't print. */ |
3006 | bp_silent, | |
c906108c | 3007 | |
c5aa993b JM |
3008 | /* There was a breakpoint, stop and print. */ |
3009 | bp_noisy, | |
c906108c | 3010 | |
c5aa993b JM |
3011 | /* We hit the longjmp breakpoint. */ |
3012 | long_jump, | |
c906108c | 3013 | |
c5aa993b JM |
3014 | /* We hit the longjmp_resume breakpoint. */ |
3015 | long_resume, | |
c906108c | 3016 | |
c5aa993b JM |
3017 | /* We hit the step_resume breakpoint. */ |
3018 | step_resume, | |
c906108c | 3019 | |
c5aa993b JM |
3020 | /* We hit the shared library event breakpoint. */ |
3021 | shlib_event, | |
c906108c | 3022 | |
c5aa993b JM |
3023 | /* We caught a shared library event. */ |
3024 | catch_shlib_event, | |
c906108c | 3025 | |
c5aa993b JM |
3026 | /* This is just used to count how many enums there are. */ |
3027 | class_last | |
c906108c SS |
3028 | }; |
3029 | ||
3030 | /* Here is the table which drives this routine. So that we can | |
3031 | format it pretty, we define some abbreviations for the | |
3032 | enum bpstat_what codes. */ | |
3033 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3034 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3035 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3036 | #define sgl BPSTAT_WHAT_SINGLE | |
3037 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3038 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
3039 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
3040 | #define sr BPSTAT_WHAT_STEP_RESUME | |
c906108c SS |
3041 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3042 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3043 | ||
3044 | /* "Can't happen." Might want to print an error message. | |
3045 | abort() is not out of the question, but chances are GDB is just | |
3046 | a bit confused, not unusable. */ | |
3047 | #define err BPSTAT_WHAT_STOP_NOISY | |
3048 | ||
3049 | /* Given an old action and a class, come up with a new action. */ | |
3050 | /* One interesting property of this table is that wp_silent is the same | |
3051 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3052 | after stopping, the check for whether to step over a breakpoint | |
3053 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3054 | reference to how we stopped. We retain separate wp_silent and |
3055 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3056 | |
3057 | Another possibly interesting property of this table is that | |
3058 | there's a partial ordering, priority-like, of the actions. Once | |
3059 | you've decided that some action is appropriate, you'll never go | |
3060 | back and decide something of a lower priority is better. The | |
3061 | ordering is: | |
3062 | ||
4d5b2cd7 DJ |
3063 | kc < clr sgl shl shlr slr sn sr ss |
3064 | sgl < clrs shl shlr slr sn sr ss | |
3065 | slr < err shl shlr sn sr ss | |
3066 | clr < clrs err shl shlr sn sr ss | |
3067 | clrs < err shl shlr sn sr ss | |
3068 | ss < shl shlr sn sr | |
3069 | sn < shl shlr sr | |
46d57086 DJ |
3070 | shl < shlr sr |
3071 | shlr < sr | |
4d5b2cd7 | 3072 | sr < |
c5aa993b | 3073 | |
43ff13b4 JM |
3074 | What I think this means is that we don't need a damned table |
3075 | here. If you just put the rows and columns in the right order, | |
3076 | it'd look awfully regular. We could simply walk the bpstat list | |
3077 | and choose the highest priority action we find, with a little | |
3078 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3079 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3080 | is messy anyway). */ | |
c906108c SS |
3081 | |
3082 | /* step_resume entries: a step resume breakpoint overrides another | |
3083 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3084 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3085 | |
3086 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3087 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3088 | { | |
3089 | /* old action */ | |
4d5b2cd7 | 3090 | /* kc ss sn sgl slr clr clrs sr shl shlr |
c5aa993b JM |
3091 | */ |
3092 | /*no_effect */ | |
4d5b2cd7 | 3093 | {kc, ss, sn, sgl, slr, clr, clrs, sr, shl, shlr}, |
c5aa993b | 3094 | /*wp_silent */ |
4d5b2cd7 | 3095 | {ss, ss, sn, ss, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3096 | /*wp_noisy */ |
4d5b2cd7 | 3097 | {sn, sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3098 | /*bp_nostop */ |
4d5b2cd7 | 3099 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, shl, shlr}, |
c5aa993b | 3100 | /*bp_silent */ |
4d5b2cd7 | 3101 | {ss, ss, sn, ss, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3102 | /*bp_noisy */ |
4d5b2cd7 | 3103 | {sn, sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3104 | /*long_jump */ |
4d5b2cd7 | 3105 | {slr, ss, sn, slr, slr, err, err, sr, shl, shlr}, |
c5aa993b | 3106 | /*long_resume */ |
4d5b2cd7 | 3107 | {clr, ss, sn, clrs, err, err, err, sr, shl, shlr}, |
c5aa993b | 3108 | /*step_resume */ |
4d5b2cd7 | 3109 | {sr, sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3110 | /*shlib */ |
4d5b2cd7 | 3111 | {shl, shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3112 | /*catch_shlib */ |
4d5b2cd7 | 3113 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3114 | }; |
c906108c SS |
3115 | |
3116 | #undef kc | |
3117 | #undef ss | |
3118 | #undef sn | |
3119 | #undef sgl | |
3120 | #undef slr | |
3121 | #undef clr | |
3122 | #undef clrs | |
3123 | #undef err | |
3124 | #undef sr | |
3125 | #undef ts | |
3126 | #undef shl | |
3127 | #undef shlr | |
3128 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3129 | struct bpstat_what retval; | |
3130 | ||
3131 | retval.call_dummy = 0; | |
3132 | for (; bs != NULL; bs = bs->next) | |
3133 | { | |
3134 | enum class bs_class = no_effect; | |
3135 | if (bs->breakpoint_at == NULL) | |
3136 | /* I suspect this can happen if it was a momentary breakpoint | |
3137 | which has since been deleted. */ | |
3138 | continue; | |
3139 | switch (bs->breakpoint_at->type) | |
3140 | { | |
3141 | case bp_none: | |
3142 | continue; | |
3143 | ||
3144 | case bp_breakpoint: | |
3145 | case bp_hardware_breakpoint: | |
3146 | case bp_until: | |
3147 | case bp_finish: | |
3148 | if (bs->stop) | |
3149 | { | |
3150 | if (bs->print) | |
3151 | bs_class = bp_noisy; | |
3152 | else | |
3153 | bs_class = bp_silent; | |
3154 | } | |
3155 | else | |
3156 | bs_class = bp_nostop; | |
3157 | break; | |
3158 | case bp_watchpoint: | |
3159 | case bp_hardware_watchpoint: | |
3160 | case bp_read_watchpoint: | |
3161 | case bp_access_watchpoint: | |
3162 | if (bs->stop) | |
3163 | { | |
3164 | if (bs->print) | |
3165 | bs_class = wp_noisy; | |
3166 | else | |
3167 | bs_class = wp_silent; | |
3168 | } | |
3169 | else | |
53a5351d JM |
3170 | /* There was a watchpoint, but we're not stopping. |
3171 | This requires no further action. */ | |
c906108c SS |
3172 | bs_class = no_effect; |
3173 | break; | |
3174 | case bp_longjmp: | |
3175 | bs_class = long_jump; | |
3176 | break; | |
3177 | case bp_longjmp_resume: | |
3178 | bs_class = long_resume; | |
3179 | break; | |
3180 | case bp_step_resume: | |
3181 | if (bs->stop) | |
3182 | { | |
3183 | bs_class = step_resume; | |
3184 | } | |
3185 | else | |
3186 | /* It is for the wrong frame. */ | |
3187 | bs_class = bp_nostop; | |
3188 | break; | |
c906108c SS |
3189 | case bp_watchpoint_scope: |
3190 | bs_class = bp_nostop; | |
3191 | break; | |
c5aa993b JM |
3192 | case bp_shlib_event: |
3193 | bs_class = shlib_event; | |
3194 | break; | |
c4093a6a | 3195 | case bp_thread_event: |
1900040c | 3196 | case bp_overlay_event: |
c4093a6a JM |
3197 | bs_class = bp_nostop; |
3198 | break; | |
c5aa993b JM |
3199 | case bp_catch_load: |
3200 | case bp_catch_unload: | |
3201 | /* Only if this catchpoint triggered should we cause the | |
3202 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3203 | catchpoint. */ | |
3204 | if (bs->stop) | |
3205 | bs_class = catch_shlib_event; | |
3206 | else | |
3207 | bs_class = no_effect; | |
3208 | break; | |
3209 | case bp_catch_fork: | |
3210 | case bp_catch_vfork: | |
3211 | case bp_catch_exec: | |
3212 | if (bs->stop) | |
3213 | { | |
3214 | if (bs->print) | |
3215 | bs_class = bp_noisy; | |
3216 | else | |
3217 | bs_class = bp_silent; | |
3218 | } | |
3219 | else | |
53a5351d JM |
3220 | /* There was a catchpoint, but we're not stopping. |
3221 | This requires no further action. */ | |
c5aa993b JM |
3222 | bs_class = no_effect; |
3223 | break; | |
3224 | case bp_catch_catch: | |
3225 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3226 | bs_class = bp_nostop; | |
3227 | else if (bs->stop) | |
3228 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3229 | break; | |
3230 | case bp_catch_throw: | |
3231 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3232 | bs_class = bp_nostop; | |
3233 | else if (bs->stop) | |
3234 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3235 | break; |
c906108c | 3236 | case bp_call_dummy: |
53a5351d JM |
3237 | /* Make sure the action is stop (silent or noisy), |
3238 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3239 | bs_class = bp_silent; |
3240 | retval.call_dummy = 1; | |
3241 | break; | |
3242 | } | |
c5aa993b | 3243 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3244 | } |
3245 | retval.main_action = current_action; | |
3246 | return retval; | |
3247 | } | |
3248 | ||
3249 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3250 | without hardware support). This isn't related to a specific bpstat, | |
3251 | just to things like whether watchpoints are set. */ | |
3252 | ||
c5aa993b | 3253 | int |
fba45db2 | 3254 | bpstat_should_step (void) |
c906108c SS |
3255 | { |
3256 | struct breakpoint *b; | |
3257 | ALL_BREAKPOINTS (b) | |
468d015d | 3258 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3259 | return 1; |
c906108c SS |
3260 | return 0; |
3261 | } | |
3262 | ||
3263 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3264 | int | |
fba45db2 | 3265 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3266 | { |
075f6582 DJ |
3267 | struct bp_location *bpt; |
3268 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3269 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3270 | && bpt->inserted |
3271 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3272 | return 1; |
c906108c SS |
3273 | return 0; |
3274 | } | |
c906108c | 3275 | \f |
c5aa993b | 3276 | |
c906108c SS |
3277 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3278 | function returns another bpstat which contains only the catchpoints | |
3279 | on that first list, if any. */ | |
3280 | void | |
fba45db2 | 3281 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3282 | { |
3283 | struct bpstats root_bs[1]; | |
3284 | bpstat bs = root_bs; | |
3285 | struct breakpoint *ep; | |
3286 | char *dll_pathname; | |
3287 | ||
c906108c SS |
3288 | bpstat_clear (cp_list); |
3289 | root_bs->next = NULL; | |
c5aa993b JM |
3290 | |
3291 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3292 | { |
3293 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3294 | ep = ep_list->breakpoint_at; | |
3295 | if (ep == NULL) | |
c5aa993b JM |
3296 | break; |
3297 | if ((ep->type != bp_catch_load) && | |
3298 | (ep->type != bp_catch_unload) && | |
3299 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3300 | (ep->type != bp_catch_throw)) |
3301 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3302 | continue; |
3303 | ||
c906108c SS |
3304 | /* Yes; add it to the list. */ |
3305 | bs = bpstat_alloc (ep, bs); | |
3306 | *bs = *ep_list; | |
3307 | bs->next = NULL; | |
3308 | bs = root_bs->next; | |
c5aa993b | 3309 | |
c906108c SS |
3310 | #if defined(SOLIB_ADD) |
3311 | /* Also, for each triggered catchpoint, tag it with the name of | |
3312 | the library that caused this trigger. (We copy the name now, | |
3313 | because it's only guaranteed to be available NOW, when the | |
3314 | catchpoint triggers. Clients who may wish to know the name | |
3315 | later must get it from the catchpoint itself.) */ | |
3316 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3317 | xfree (ep->triggered_dll_pathname); |
c906108c | 3318 | if (ep->type == bp_catch_load) |
39f77062 KB |
3319 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3320 | PIDGET (inferior_ptid)); | |
c906108c | 3321 | else |
39f77062 KB |
3322 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3323 | PIDGET (inferior_ptid)); | |
c906108c SS |
3324 | #else |
3325 | dll_pathname = NULL; | |
3326 | #endif | |
3327 | if (dll_pathname) | |
3328 | { | |
53a5351d JM |
3329 | ep->triggered_dll_pathname = (char *) |
3330 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3331 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3332 | } | |
3333 | else | |
3334 | ep->triggered_dll_pathname = NULL; | |
3335 | } | |
c5aa993b | 3336 | |
c906108c SS |
3337 | *cp_list = bs; |
3338 | } | |
3339 | ||
c4093a6a | 3340 | /* Print B to gdb_stdout. */ |
c906108c | 3341 | static void |
c4093a6a JM |
3342 | print_one_breakpoint (struct breakpoint *b, |
3343 | CORE_ADDR *last_addr) | |
c906108c | 3344 | { |
52f0bd74 AC |
3345 | struct command_line *l; |
3346 | struct symbol *sym; | |
c4093a6a JM |
3347 | struct ep_type_description |
3348 | { | |
3349 | enum bptype type; | |
3350 | char *description; | |
3351 | }; | |
3352 | static struct ep_type_description bptypes[] = | |
c906108c | 3353 | { |
c5aa993b JM |
3354 | {bp_none, "?deleted?"}, |
3355 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3356 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3357 | {bp_until, "until"}, |
3358 | {bp_finish, "finish"}, | |
3359 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3360 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3361 | {bp_read_watchpoint, "read watchpoint"}, |
3362 | {bp_access_watchpoint, "acc watchpoint"}, | |
3363 | {bp_longjmp, "longjmp"}, | |
3364 | {bp_longjmp_resume, "longjmp resume"}, | |
3365 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3366 | {bp_watchpoint_scope, "watchpoint scope"}, |
3367 | {bp_call_dummy, "call dummy"}, | |
3368 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3369 | {bp_thread_event, "thread events"}, |
1900040c | 3370 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3371 | {bp_catch_load, "catch load"}, |
3372 | {bp_catch_unload, "catch unload"}, | |
3373 | {bp_catch_fork, "catch fork"}, | |
3374 | {bp_catch_vfork, "catch vfork"}, | |
3375 | {bp_catch_exec, "catch exec"}, | |
3376 | {bp_catch_catch, "catch catch"}, | |
3377 | {bp_catch_throw, "catch throw"} | |
3378 | }; | |
c4093a6a | 3379 | |
c5aa993b JM |
3380 | static char *bpdisps[] = |
3381 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3382 | static char bpenables[] = "nynny"; |
c906108c | 3383 | char wrap_indent[80]; |
8b93c638 JM |
3384 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3385 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3386 | struct cleanup *bkpt_chain; |
c906108c | 3387 | |
c4093a6a | 3388 | annotate_record (); |
3b31d625 | 3389 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3390 | |
3391 | /* 1 */ | |
3392 | annotate_field (0); | |
8b93c638 | 3393 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3394 | |
3395 | /* 2 */ | |
3396 | annotate_field (1); | |
c1f5197e | 3397 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) |
c4093a6a | 3398 | || ((int) b->type != bptypes[(int) b->type].type)) |
8e65ff28 | 3399 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3400 | _("bptypes table does not describe type #%d."), |
c4093a6a | 3401 | (int) b->type); |
8b93c638 | 3402 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3403 | |
3404 | /* 3 */ | |
3405 | annotate_field (2); | |
8b93c638 | 3406 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3407 | |
3408 | /* 4 */ | |
3409 | annotate_field (3); | |
b5de0fa7 | 3410 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3411 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3412 | |
3413 | /* 5 and 6 */ | |
3414 | strcpy (wrap_indent, " "); | |
3415 | if (addressprint) | |
75ac9d7b | 3416 | { |
17a912b6 | 3417 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3418 | strcat (wrap_indent, " "); |
3419 | else | |
3420 | strcat (wrap_indent, " "); | |
3421 | } | |
c906108c | 3422 | |
3086aeae DJ |
3423 | if (b->ops != NULL && b->ops->print_one != NULL) |
3424 | b->ops->print_one (b, last_addr); | |
3425 | else | |
3426 | switch (b->type) | |
3427 | { | |
3428 | case bp_none: | |
3429 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3430 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3431 | break; |
c906108c | 3432 | |
3086aeae DJ |
3433 | case bp_watchpoint: |
3434 | case bp_hardware_watchpoint: | |
3435 | case bp_read_watchpoint: | |
3436 | case bp_access_watchpoint: | |
3437 | /* Field 4, the address, is omitted (which makes the columns | |
3438 | not line up too nicely with the headers, but the effect | |
3439 | is relatively readable). */ | |
3440 | if (addressprint) | |
3441 | ui_out_field_skip (uiout, "addr"); | |
3442 | annotate_field (5); | |
3443 | print_expression (b->exp, stb->stream); | |
3444 | ui_out_field_stream (uiout, "what", stb); | |
3445 | break; | |
3446 | ||
3447 | case bp_catch_load: | |
3448 | case bp_catch_unload: | |
3449 | /* Field 4, the address, is omitted (which makes the columns | |
3450 | not line up too nicely with the headers, but the effect | |
3451 | is relatively readable). */ | |
3452 | if (addressprint) | |
3453 | ui_out_field_skip (uiout, "addr"); | |
3454 | annotate_field (5); | |
3455 | if (b->dll_pathname == NULL) | |
3456 | { | |
3457 | ui_out_field_string (uiout, "what", "<any library>"); | |
3458 | ui_out_spaces (uiout, 1); | |
3459 | } | |
3460 | else | |
3461 | { | |
3462 | ui_out_text (uiout, "library \""); | |
3463 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3464 | ui_out_text (uiout, "\" "); | |
3465 | } | |
3466 | break; | |
3467 | ||
3468 | case bp_catch_fork: | |
3469 | case bp_catch_vfork: | |
3470 | /* Field 4, the address, is omitted (which makes the columns | |
3471 | not line up too nicely with the headers, but the effect | |
3472 | is relatively readable). */ | |
3473 | if (addressprint) | |
3474 | ui_out_field_skip (uiout, "addr"); | |
3475 | annotate_field (5); | |
3476 | if (b->forked_inferior_pid != 0) | |
3477 | { | |
3478 | ui_out_text (uiout, "process "); | |
3479 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3480 | ui_out_spaces (uiout, 1); | |
3481 | } | |
0f699bbe | 3482 | break; |
3086aeae DJ |
3483 | |
3484 | case bp_catch_exec: | |
3485 | /* Field 4, the address, is omitted (which makes the columns | |
3486 | not line up too nicely with the headers, but the effect | |
3487 | is relatively readable). */ | |
3488 | if (addressprint) | |
3489 | ui_out_field_skip (uiout, "addr"); | |
3490 | annotate_field (5); | |
3491 | if (b->exec_pathname != NULL) | |
3492 | { | |
3493 | ui_out_text (uiout, "program \""); | |
3494 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3495 | ui_out_text (uiout, "\" "); | |
3496 | } | |
3497 | break; | |
3498 | ||
3499 | case bp_catch_catch: | |
3500 | /* Field 4, the address, is omitted (which makes the columns | |
3501 | not line up too nicely with the headers, but the effect | |
3502 | is relatively readable). */ | |
3503 | if (addressprint) | |
3504 | ui_out_field_skip (uiout, "addr"); | |
3505 | annotate_field (5); | |
3506 | ui_out_field_string (uiout, "what", "exception catch"); | |
3507 | ui_out_spaces (uiout, 1); | |
3508 | break; | |
3509 | ||
3510 | case bp_catch_throw: | |
3511 | /* Field 4, the address, is omitted (which makes the columns | |
3512 | not line up too nicely with the headers, but the effect | |
3513 | is relatively readable). */ | |
3514 | if (addressprint) | |
3515 | ui_out_field_skip (uiout, "addr"); | |
3516 | annotate_field (5); | |
3517 | ui_out_field_string (uiout, "what", "exception throw"); | |
3518 | ui_out_spaces (uiout, 1); | |
3519 | break; | |
3520 | ||
3521 | case bp_breakpoint: | |
3522 | case bp_hardware_breakpoint: | |
3523 | case bp_until: | |
3524 | case bp_finish: | |
3525 | case bp_longjmp: | |
3526 | case bp_longjmp_resume: | |
3527 | case bp_step_resume: | |
3086aeae DJ |
3528 | case bp_watchpoint_scope: |
3529 | case bp_call_dummy: | |
3530 | case bp_shlib_event: | |
3531 | case bp_thread_event: | |
3532 | case bp_overlay_event: | |
3533 | if (addressprint) | |
3534 | { | |
3535 | annotate_field (4); | |
0101ce28 | 3536 | if (b->pending) |
d5479188 | 3537 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3538 | else |
3539 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3540 | } |
3541 | annotate_field (5); | |
5cab636d | 3542 | *last_addr = b->loc->address; |
3086aeae DJ |
3543 | if (b->source_file) |
3544 | { | |
cf3a9e5b | 3545 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3546 | if (sym) |
3547 | { | |
3548 | ui_out_text (uiout, "in "); | |
3549 | ui_out_field_string (uiout, "func", | |
3550 | SYMBOL_PRINT_NAME (sym)); | |
3551 | ui_out_wrap_hint (uiout, wrap_indent); | |
3552 | ui_out_text (uiout, " at "); | |
3553 | } | |
3554 | ui_out_field_string (uiout, "file", b->source_file); | |
3555 | ui_out_text (uiout, ":"); | |
38fcd64c DJ |
3556 | |
3557 | if (ui_out_is_mi_like_p (uiout)) | |
3558 | { | |
3559 | struct symtab_and_line sal = find_pc_line (b->loc->address, 0); | |
3560 | char *fullname = symtab_to_fullname (sal.symtab); | |
3561 | ||
3562 | if (fullname) | |
3563 | ui_out_field_string (uiout, "fullname", fullname); | |
3564 | } | |
3565 | ||
3086aeae DJ |
3566 | ui_out_field_int (uiout, "line", b->line_number); |
3567 | } | |
0101ce28 JJ |
3568 | else if (b->pending) |
3569 | { | |
3570 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3571 | } | |
3086aeae DJ |
3572 | else |
3573 | { | |
5cab636d | 3574 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3575 | ui_out_field_stream (uiout, "at", stb); |
3576 | } | |
3577 | break; | |
3578 | } | |
c906108c | 3579 | |
c4093a6a JM |
3580 | if (b->thread != -1) |
3581 | { | |
8b93c638 JM |
3582 | /* FIXME: This seems to be redundant and lost here; see the |
3583 | "stop only in" line a little further down. */ | |
3584 | ui_out_text (uiout, " thread "); | |
3585 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3586 | } |
3587 | ||
8b93c638 | 3588 | ui_out_text (uiout, "\n"); |
c4093a6a | 3589 | |
818dd999 | 3590 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3591 | { |
3592 | annotate_field (6); | |
8b93c638 | 3593 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3594 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3595 | the frame ID. */ | |
d0a55772 | 3596 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3597 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3598 | } |
3599 | ||
f7f9143b | 3600 | if (b->cond && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3601 | { |
f7f9143b JB |
3602 | /* We do not print the condition for Ada exception catchpoints |
3603 | because the condition is an internal implementation detail | |
3604 | that we do not want to expose to the user. */ | |
c4093a6a | 3605 | annotate_field (7); |
8b93c638 JM |
3606 | ui_out_text (uiout, "\tstop only if "); |
3607 | print_expression (b->cond, stb->stream); | |
3608 | ui_out_field_stream (uiout, "cond", stb); | |
3609 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3610 | } |
0101ce28 JJ |
3611 | |
3612 | if (b->pending && b->cond_string) | |
3613 | { | |
3614 | annotate_field (7); | |
3615 | ui_out_text (uiout, "\tstop only if "); | |
3616 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3617 | ui_out_text (uiout, "\n"); | |
3618 | } | |
3619 | ||
c4093a6a JM |
3620 | if (b->thread != -1) |
3621 | { | |
3622 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3623 | ui_out_text (uiout, "\tstop only in thread "); |
3624 | ui_out_field_int (uiout, "thread", b->thread); | |
3625 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3626 | } |
3627 | ||
3628 | if (show_breakpoint_hit_counts && b->hit_count) | |
3629 | { | |
3630 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3631 | if (ep_is_catchpoint (b)) |
3632 | ui_out_text (uiout, "\tcatchpoint"); | |
3633 | else | |
3634 | ui_out_text (uiout, "\tbreakpoint"); | |
3635 | ui_out_text (uiout, " already hit "); | |
3636 | ui_out_field_int (uiout, "times", b->hit_count); | |
3637 | if (b->hit_count == 1) | |
3638 | ui_out_text (uiout, " time\n"); | |
3639 | else | |
3640 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3641 | } |
3642 | ||
fb40c209 AC |
3643 | /* Output the count also if it is zero, but only if this is |
3644 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3645 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3646 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3647 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3648 | |
c4093a6a JM |
3649 | if (b->ignore_count) |
3650 | { | |
3651 | annotate_field (8); | |
8b93c638 JM |
3652 | ui_out_text (uiout, "\tignore next "); |
3653 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3654 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3655 | } |
3656 | ||
3657 | if ((l = b->commands)) | |
3658 | { | |
3b31d625 EZ |
3659 | struct cleanup *script_chain; |
3660 | ||
c4093a6a | 3661 | annotate_field (9); |
3b31d625 | 3662 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3663 | print_command_lines (uiout, l, 4); |
3b31d625 | 3664 | do_cleanups (script_chain); |
c4093a6a | 3665 | } |
3b31d625 | 3666 | do_cleanups (bkpt_chain); |
8b93c638 | 3667 | do_cleanups (old_chain); |
c4093a6a | 3668 | } |
c5aa993b | 3669 | |
c4093a6a JM |
3670 | struct captured_breakpoint_query_args |
3671 | { | |
3672 | int bnum; | |
3673 | }; | |
c5aa993b | 3674 | |
c4093a6a | 3675 | static int |
2b65245e | 3676 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3677 | { |
3678 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3679 | struct breakpoint *b; |
c4093a6a JM |
3680 | CORE_ADDR dummy_addr = 0; |
3681 | ALL_BREAKPOINTS (b) | |
3682 | { | |
3683 | if (args->bnum == b->number) | |
c5aa993b | 3684 | { |
c4093a6a JM |
3685 | print_one_breakpoint (b, &dummy_addr); |
3686 | return GDB_RC_OK; | |
c5aa993b | 3687 | } |
c4093a6a JM |
3688 | } |
3689 | return GDB_RC_NONE; | |
3690 | } | |
c5aa993b | 3691 | |
c4093a6a | 3692 | enum gdb_rc |
ce43223b | 3693 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3694 | { |
3695 | struct captured_breakpoint_query_args args; | |
3696 | args.bnum = bnum; | |
3697 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3698 | an error. */ | |
b0b13bb4 DJ |
3699 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3700 | error_message, RETURN_MASK_ALL) < 0) | |
3701 | return GDB_RC_FAIL; | |
3702 | else | |
3703 | return GDB_RC_OK; | |
c4093a6a | 3704 | } |
c5aa993b | 3705 | |
7f3b0473 AC |
3706 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3707 | catchpoints, et.al.). */ | |
3708 | ||
3709 | static int | |
3710 | user_settable_breakpoint (const struct breakpoint *b) | |
3711 | { | |
3712 | return (b->type == bp_breakpoint | |
3713 | || b->type == bp_catch_load | |
3714 | || b->type == bp_catch_unload | |
3715 | || b->type == bp_catch_fork | |
3716 | || b->type == bp_catch_vfork | |
3717 | || b->type == bp_catch_exec | |
3718 | || b->type == bp_catch_catch | |
3719 | || b->type == bp_catch_throw | |
3720 | || b->type == bp_hardware_breakpoint | |
3721 | || b->type == bp_watchpoint | |
3722 | || b->type == bp_read_watchpoint | |
3723 | || b->type == bp_access_watchpoint | |
3724 | || b->type == bp_hardware_watchpoint); | |
3725 | } | |
3726 | ||
3727 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3728 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3729 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3730 | |
c4093a6a | 3731 | static void |
fba45db2 | 3732 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3733 | { |
52f0bd74 | 3734 | struct breakpoint *b; |
c4093a6a | 3735 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3736 | int nr_printable_breakpoints; |
3b31d625 | 3737 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3738 | |
7f3b0473 AC |
3739 | /* Compute the number of rows in the table. */ |
3740 | nr_printable_breakpoints = 0; | |
3741 | ALL_BREAKPOINTS (b) | |
3742 | if (bnum == -1 | |
3743 | || bnum == b->number) | |
3744 | { | |
3745 | if (allflag || user_settable_breakpoint (b)) | |
3746 | nr_printable_breakpoints++; | |
3747 | } | |
3748 | ||
8b93c638 | 3749 | if (addressprint) |
3b31d625 EZ |
3750 | bkpttbl_chain |
3751 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3752 | "BreakpointTable"); | |
8b93c638 | 3753 | else |
3b31d625 EZ |
3754 | bkpttbl_chain |
3755 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3756 | "BreakpointTable"); | |
8b93c638 | 3757 | |
7f3b0473 | 3758 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3759 | annotate_breakpoints_headers (); |
3760 | if (nr_printable_breakpoints > 0) | |
3761 | annotate_field (0); | |
3762 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3763 | if (nr_printable_breakpoints > 0) | |
3764 | annotate_field (1); | |
3765 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3766 | if (nr_printable_breakpoints > 0) | |
3767 | annotate_field (2); | |
3768 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3769 | if (nr_printable_breakpoints > 0) | |
3770 | annotate_field (3); | |
3771 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3772 | if (addressprint) | |
7f3b0473 | 3773 | { |
d7faa9e7 AC |
3774 | if (nr_printable_breakpoints > 0) |
3775 | annotate_field (4); | |
17a912b6 | 3776 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3777 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3778 | else |
b25959ec | 3779 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3780 | } |
d7faa9e7 AC |
3781 | if (nr_printable_breakpoints > 0) |
3782 | annotate_field (5); | |
3783 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3784 | ui_out_table_body (uiout); | |
3785 | if (nr_printable_breakpoints > 0) | |
3786 | annotate_breakpoints_table (); | |
7f3b0473 | 3787 | |
c4093a6a JM |
3788 | ALL_BREAKPOINTS (b) |
3789 | if (bnum == -1 | |
3790 | || bnum == b->number) | |
3791 | { | |
3792 | /* We only print out user settable breakpoints unless the | |
3793 | allflag is set. */ | |
7f3b0473 AC |
3794 | if (allflag || user_settable_breakpoint (b)) |
3795 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3796 | } |
3797 | ||
3b31d625 | 3798 | do_cleanups (bkpttbl_chain); |
698384cd | 3799 | |
7f3b0473 | 3800 | if (nr_printable_breakpoints == 0) |
c906108c | 3801 | { |
8b93c638 JM |
3802 | if (bnum == -1) |
3803 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3804 | else | |
3805 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3806 | bnum); | |
c906108c SS |
3807 | } |
3808 | else | |
c4093a6a JM |
3809 | { |
3810 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3811 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3812 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3813 | set_next_address (last_addr); |
3814 | } | |
c906108c | 3815 | |
c4093a6a JM |
3816 | /* FIXME? Should this be moved up so that it is only called when |
3817 | there have been breakpoints? */ | |
c906108c SS |
3818 | annotate_breakpoints_table_end (); |
3819 | } | |
3820 | ||
c906108c | 3821 | static void |
fba45db2 | 3822 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3823 | { |
3824 | int bnum = -1; | |
3825 | ||
3826 | if (bnum_exp) | |
bb518678 | 3827 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3828 | |
3829 | breakpoint_1 (bnum, 0); | |
3830 | } | |
3831 | ||
7a292a7a | 3832 | static void |
fba45db2 | 3833 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3834 | { |
3835 | int bnum = -1; | |
3836 | ||
3837 | if (bnum_exp) | |
bb518678 | 3838 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3839 | |
3840 | breakpoint_1 (bnum, 1); | |
3841 | } | |
3842 | ||
c906108c SS |
3843 | /* Print a message describing any breakpoints set at PC. */ |
3844 | ||
3845 | static void | |
d674a25c | 3846 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 3847 | { |
52f0bd74 AC |
3848 | int others = 0; |
3849 | struct breakpoint *b; | |
c906108c SS |
3850 | |
3851 | ALL_BREAKPOINTS (b) | |
5cab636d | 3852 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3853 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3854 | others++; |
c906108c SS |
3855 | if (others > 0) |
3856 | { | |
a3f17187 AC |
3857 | if (others == 1) |
3858 | printf_filtered (_("Note: breakpoint ")); | |
3859 | else /* if (others == ???) */ | |
3860 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 3861 | ALL_BREAKPOINTS (b) |
5cab636d | 3862 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3863 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3864 | { |
3865 | others--; | |
d674a25c AS |
3866 | printf_filtered ("%d", b->number); |
3867 | if (b->thread == -1 && thread != -1) | |
3868 | printf_filtered (" (all threads)"); | |
3869 | else if (b->thread != -1) | |
3870 | printf_filtered (" (thread %d)", b->thread); | |
3871 | printf_filtered ("%s%s ", | |
9f04af04 MS |
3872 | ((b->enable_state == bp_disabled || |
3873 | b->enable_state == bp_shlib_disabled || | |
3874 | b->enable_state == bp_call_disabled) | |
d674a25c | 3875 | ? " (disabled)" |
9f04af04 MS |
3876 | : b->enable_state == bp_permanent |
3877 | ? " (permanent)" | |
3878 | : ""), | |
3879 | (others > 1) ? "," | |
3880 | : ((others == 1) ? " and" : "")); | |
3881 | } | |
a3f17187 | 3882 | printf_filtered (_("also set at pc ")); |
66bf4b3a | 3883 | deprecated_print_address_numeric (pc, 1, gdb_stdout); |
c906108c SS |
3884 | printf_filtered (".\n"); |
3885 | } | |
3886 | } | |
3887 | \f | |
3888 | /* Set the default place to put a breakpoint | |
3889 | for the `break' command with no arguments. */ | |
3890 | ||
3891 | void | |
fba45db2 KB |
3892 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3893 | int line) | |
c906108c SS |
3894 | { |
3895 | default_breakpoint_valid = valid; | |
3896 | default_breakpoint_address = addr; | |
3897 | default_breakpoint_symtab = symtab; | |
3898 | default_breakpoint_line = line; | |
3899 | } | |
3900 | ||
e4f237da KB |
3901 | /* Return true iff it is meaningful to use the address member of |
3902 | BPT. For some breakpoint types, the address member is irrelevant | |
3903 | and it makes no sense to attempt to compare it to other addresses | |
3904 | (or use it for any other purpose either). | |
3905 | ||
3906 | More specifically, each of the following breakpoint types will always | |
3907 | have a zero valued address and we don't want check_duplicates() to mark | |
3908 | breakpoints of any of these types to be a duplicate of an actual | |
3909 | breakpoint at address zero: | |
3910 | ||
3911 | bp_watchpoint | |
3912 | bp_hardware_watchpoint | |
3913 | bp_read_watchpoint | |
3914 | bp_access_watchpoint | |
3915 | bp_catch_exec | |
3916 | bp_longjmp_resume | |
3917 | bp_catch_fork | |
3918 | bp_catch_vork */ | |
3919 | ||
3920 | static int | |
3921 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3922 | { | |
3923 | enum bptype type = bpt->type; | |
3924 | ||
3925 | return (type != bp_watchpoint | |
3926 | && type != bp_hardware_watchpoint | |
3927 | && type != bp_read_watchpoint | |
3928 | && type != bp_access_watchpoint | |
3929 | && type != bp_catch_exec | |
3930 | && type != bp_longjmp_resume | |
3931 | && type != bp_catch_fork | |
3932 | && type != bp_catch_vfork); | |
3933 | } | |
3934 | ||
9f60f21b | 3935 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3936 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3937 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3938 | If we have a permanent breakpoint at the same place as BPT, make |
3939 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3940 | |
3941 | static void | |
9f60f21b | 3942 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3943 | { |
075f6582 | 3944 | struct bp_location *b; |
52f0bd74 | 3945 | int count = 0; |
075f6582 | 3946 | struct bp_location *perm_bp = 0; |
5cab636d | 3947 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 3948 | asection *section = bpt->loc->section; |
c906108c | 3949 | |
e4f237da | 3950 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3951 | return; |
3952 | ||
075f6582 DJ |
3953 | ALL_BP_LOCATIONS (b) |
3954 | if (b->owner->enable_state != bp_disabled | |
3955 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3956 | && !b->owner->pending |
075f6582 DJ |
3957 | && b->owner->enable_state != bp_call_disabled |
3958 | && b->address == address /* address / overlay match */ | |
3959 | && (!overlay_debugging || b->section == section) | |
3960 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3961 | { |
c2c6d25f | 3962 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3963 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3964 | { |
3965 | perm_bp = b; | |
3966 | break; | |
3967 | } | |
3968 | ||
c5aa993b | 3969 | count++; |
075f6582 | 3970 | b->duplicate = count > 1; |
c5aa993b | 3971 | } |
c2c6d25f JM |
3972 | |
3973 | /* If we found a permanent breakpoint at this address, go over the | |
3974 | list again and declare all the other breakpoints there to be the | |
3975 | duplicates. */ | |
3976 | if (perm_bp) | |
3977 | { | |
075f6582 | 3978 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3979 | |
3980 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3981 | if (! perm_bp->inserted) |
8e65ff28 | 3982 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
3983 | _("allegedly permanent breakpoint is not " |
3984 | "actually inserted")); | |
c2c6d25f | 3985 | |
075f6582 | 3986 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3987 | if (b != perm_bp) |
3988 | { | |
075f6582 DJ |
3989 | if (b->owner->enable_state != bp_disabled |
3990 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 3991 | && !b->owner->pending |
075f6582 DJ |
3992 | && b->owner->enable_state != bp_call_disabled |
3993 | && b->address == address /* address / overlay match */ | |
3994 | && (!overlay_debugging || b->section == section) | |
3995 | && breakpoint_address_is_meaningful (b->owner)) | |
3996 | { | |
3997 | if (b->inserted) | |
3998 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3999 | _("another breakpoint was inserted on top of " |
4000 | "a permanent breakpoint")); | |
075f6582 DJ |
4001 | |
4002 | b->duplicate = 1; | |
4003 | } | |
c2c6d25f JM |
4004 | } |
4005 | } | |
c906108c SS |
4006 | } |
4007 | ||
76897487 KB |
4008 | static void |
4009 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4010 | int bnum, int have_bnum) | |
4011 | { | |
4012 | char astr1[40]; | |
4013 | char astr2[40]; | |
4014 | ||
bb599908 PH |
4015 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4016 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4017 | if (have_bnum) |
8a3fe4f8 | 4018 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4019 | bnum, astr1, astr2); |
4020 | else | |
8a3fe4f8 | 4021 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4022 | } |
4023 | ||
4024 | /* Adjust a breakpoint's address to account for architectural constraints | |
4025 | on breakpoint placement. Return the adjusted address. Note: Very | |
4026 | few targets require this kind of adjustment. For most targets, | |
4027 | this function is simply the identity function. */ | |
4028 | ||
4029 | static CORE_ADDR | |
88f7da05 | 4030 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4031 | { |
4032 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4033 | { | |
4034 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4035 | return bpaddr; | |
4036 | } | |
88f7da05 KB |
4037 | else if (bptype == bp_watchpoint |
4038 | || bptype == bp_hardware_watchpoint | |
4039 | || bptype == bp_read_watchpoint | |
4040 | || bptype == bp_access_watchpoint | |
4041 | || bptype == bp_catch_fork | |
4042 | || bptype == bp_catch_vfork | |
4043 | || bptype == bp_catch_exec) | |
4044 | { | |
4045 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4046 | have their addresses modified. */ | |
4047 | return bpaddr; | |
4048 | } | |
76897487 KB |
4049 | else |
4050 | { | |
4051 | CORE_ADDR adjusted_bpaddr; | |
4052 | ||
4053 | /* Some targets have architectural constraints on the placement | |
4054 | of breakpoint instructions. Obtain the adjusted address. */ | |
4055 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4056 | bpaddr); | |
4057 | ||
4058 | /* An adjusted breakpoint address can significantly alter | |
4059 | a user's expectations. Print a warning if an adjustment | |
4060 | is required. */ | |
4061 | if (adjusted_bpaddr != bpaddr) | |
4062 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4063 | ||
4064 | return adjusted_bpaddr; | |
4065 | } | |
4066 | } | |
4067 | ||
7cc221ef DJ |
4068 | /* Allocate a struct bp_location. */ |
4069 | ||
26bb91f3 | 4070 | static struct bp_location * |
e049a4b5 | 4071 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4072 | { |
4073 | struct bp_location *loc, *loc_p; | |
4074 | ||
4075 | loc = xmalloc (sizeof (struct bp_location)); | |
4076 | memset (loc, 0, sizeof (*loc)); | |
4077 | ||
e049a4b5 DJ |
4078 | loc->owner = bpt; |
4079 | ||
4080 | switch (bp_type) | |
4081 | { | |
4082 | case bp_breakpoint: | |
4083 | case bp_until: | |
4084 | case bp_finish: | |
4085 | case bp_longjmp: | |
4086 | case bp_longjmp_resume: | |
4087 | case bp_step_resume: | |
e049a4b5 DJ |
4088 | case bp_watchpoint_scope: |
4089 | case bp_call_dummy: | |
4090 | case bp_shlib_event: | |
4091 | case bp_thread_event: | |
4092 | case bp_overlay_event: | |
4093 | case bp_catch_load: | |
4094 | case bp_catch_unload: | |
4095 | loc->loc_type = bp_loc_software_breakpoint; | |
4096 | break; | |
4097 | case bp_hardware_breakpoint: | |
4098 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4099 | break; | |
4100 | case bp_hardware_watchpoint: | |
4101 | case bp_read_watchpoint: | |
4102 | case bp_access_watchpoint: | |
4103 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4104 | break; | |
4105 | case bp_watchpoint: | |
4106 | case bp_catch_fork: | |
4107 | case bp_catch_vfork: | |
4108 | case bp_catch_exec: | |
4109 | case bp_catch_catch: | |
4110 | case bp_catch_throw: | |
4111 | loc->loc_type = bp_loc_other; | |
4112 | break; | |
4113 | default: | |
e2e0b3e5 | 4114 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4115 | } |
4116 | ||
7cc221ef DJ |
4117 | /* Add this breakpoint to the end of the chain. */ |
4118 | ||
4119 | loc_p = bp_location_chain; | |
4120 | if (loc_p == 0) | |
4121 | bp_location_chain = loc; | |
4122 | else | |
4123 | { | |
4124 | while (loc_p->next) | |
4125 | loc_p = loc_p->next; | |
4126 | loc_p->next = loc; | |
4127 | } | |
4128 | ||
4129 | return loc; | |
4130 | } | |
4131 | ||
4d28f7a8 KB |
4132 | /* set_raw_breakpoint() is a low level routine for allocating and |
4133 | partially initializing a breakpoint of type BPTYPE. The newly | |
4134 | created breakpoint's address, section, source file name, and line | |
4135 | number are provided by SAL. The newly created and partially | |
4136 | initialized breakpoint is added to the breakpoint chain and | |
4137 | is also returned as the value of this function. | |
c906108c | 4138 | |
4d28f7a8 KB |
4139 | It is expected that the caller will complete the initialization of |
4140 | the newly created breakpoint struct as well as output any status | |
4141 | information regarding the creation of a new breakpoint. In | |
4142 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4143 | number! Care should be taken to not allow an error() to occur | |
4144 | prior to completing the initialization of the breakpoint. If this | |
4145 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4146 | |
4147 | struct breakpoint * | |
4d28f7a8 | 4148 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4149 | { |
52f0bd74 | 4150 | struct breakpoint *b, *b1; |
2219d63c | 4151 | CORE_ADDR adjusted_address; |
c906108c SS |
4152 | |
4153 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4154 | memset (b, 0, sizeof (*b)); | |
2219d63c KB |
4155 | |
4156 | /* Adjust the breakpoint's address prior to allocating a location. | |
4157 | Once we call allocate_bp_location(), that mostly uninitialized | |
4158 | location will be placed on the location chain. Adjustment of the | |
4159 | breakpoint may cause read_memory_nobpt() to be called and we do | |
4160 | not want its scan of the location chain to find a breakpoint and | |
4161 | location that's only been partially initialized. */ | |
4162 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4163 | ||
e049a4b5 | 4164 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4165 | b->loc->requested_address = sal.pc; |
2219d63c KB |
4166 | b->loc->address = adjusted_address; |
4167 | ||
c906108c SS |
4168 | if (sal.symtab == NULL) |
4169 | b->source_file = NULL; | |
4170 | else | |
4171 | b->source_file = savestring (sal.symtab->filename, | |
4172 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4173 | b->loc->section = sal.section; |
4d28f7a8 | 4174 | b->type = bptype; |
c906108c SS |
4175 | b->language = current_language->la_language; |
4176 | b->input_radix = input_radix; | |
4177 | b->thread = -1; | |
4178 | b->line_number = sal.line; | |
b5de0fa7 | 4179 | b->enable_state = bp_enabled; |
c906108c SS |
4180 | b->next = 0; |
4181 | b->silent = 0; | |
4182 | b->ignore_count = 0; | |
4183 | b->commands = NULL; | |
818dd999 | 4184 | b->frame_id = null_frame_id; |
c906108c SS |
4185 | b->dll_pathname = NULL; |
4186 | b->triggered_dll_pathname = NULL; | |
4187 | b->forked_inferior_pid = 0; | |
4188 | b->exec_pathname = NULL; | |
3086aeae | 4189 | b->ops = NULL; |
0101ce28 | 4190 | b->pending = 0; |
c906108c SS |
4191 | |
4192 | /* Add this breakpoint to the end of the chain | |
4193 | so that a list of breakpoints will come out in order | |
4194 | of increasing numbers. */ | |
4195 | ||
4196 | b1 = breakpoint_chain; | |
4197 | if (b1 == 0) | |
4198 | breakpoint_chain = b; | |
4199 | else | |
4200 | { | |
4201 | while (b1->next) | |
4202 | b1 = b1->next; | |
4203 | b1->next = b; | |
4204 | } | |
4205 | ||
9f60f21b | 4206 | check_duplicates (b); |
c906108c SS |
4207 | breakpoints_changed (); |
4208 | ||
4209 | return b; | |
4210 | } | |
4211 | ||
c2c6d25f JM |
4212 | |
4213 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4214 | instruction, hard-wired into the inferior's code. */ | |
4215 | void | |
4216 | make_breakpoint_permanent (struct breakpoint *b) | |
4217 | { | |
b5de0fa7 | 4218 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4219 | |
4220 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4221 | b->loc->inserted = 1; |
c2c6d25f JM |
4222 | } |
4223 | ||
1900040c MS |
4224 | static struct breakpoint * |
4225 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4226 | { | |
4227 | static int internal_breakpoint_number = -1; | |
4228 | struct symtab_and_line sal; | |
4229 | struct breakpoint *b; | |
4230 | ||
fe39c653 | 4231 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4232 | |
4233 | sal.pc = address; | |
4234 | sal.section = find_pc_overlay (sal.pc); | |
4235 | ||
4236 | b = set_raw_breakpoint (sal, type); | |
4237 | b->number = internal_breakpoint_number--; | |
4238 | b->disposition = disp_donttouch; | |
4239 | ||
4240 | return b; | |
4241 | } | |
4242 | ||
c906108c SS |
4243 | |
4244 | static void | |
fba45db2 | 4245 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4246 | { |
c906108c | 4247 | struct breakpoint *b; |
1900040c | 4248 | struct minimal_symbol *m; |
c906108c | 4249 | |
1900040c MS |
4250 | if (func_name == NULL) |
4251 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4252 | else | |
c906108c | 4253 | { |
5520a790 | 4254 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4255 | return; |
1900040c MS |
4256 | |
4257 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4258 | } |
c906108c | 4259 | |
b5de0fa7 | 4260 | b->enable_state = bp_disabled; |
c906108c SS |
4261 | b->silent = 1; |
4262 | if (func_name) | |
4fcf66da | 4263 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4264 | } |
4265 | ||
53a5351d JM |
4266 | /* Call this routine when stepping and nexting to enable a breakpoint |
4267 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4268 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4269 | ||
4270 | void | |
fba45db2 | 4271 | enable_longjmp_breakpoint (void) |
c906108c | 4272 | { |
52f0bd74 | 4273 | struct breakpoint *b; |
c906108c SS |
4274 | |
4275 | ALL_BREAKPOINTS (b) | |
4276 | if (b->type == bp_longjmp) | |
c5aa993b | 4277 | { |
b5de0fa7 | 4278 | b->enable_state = bp_enabled; |
9f60f21b | 4279 | check_duplicates (b); |
c5aa993b | 4280 | } |
c906108c SS |
4281 | } |
4282 | ||
4283 | void | |
fba45db2 | 4284 | disable_longjmp_breakpoint (void) |
c906108c | 4285 | { |
52f0bd74 | 4286 | struct breakpoint *b; |
c906108c SS |
4287 | |
4288 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4289 | if (b->type == bp_longjmp |
c906108c | 4290 | || b->type == bp_longjmp_resume) |
c5aa993b | 4291 | { |
b5de0fa7 | 4292 | b->enable_state = bp_disabled; |
9f60f21b | 4293 | check_duplicates (b); |
c5aa993b | 4294 | } |
c906108c SS |
4295 | } |
4296 | ||
1900040c MS |
4297 | static void |
4298 | create_overlay_event_breakpoint (char *func_name) | |
4299 | { | |
4300 | struct breakpoint *b; | |
4301 | struct minimal_symbol *m; | |
4302 | ||
5520a790 | 4303 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4304 | return; |
4305 | ||
4306 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4307 | bp_overlay_event); | |
4308 | b->addr_string = xstrdup (func_name); | |
4309 | ||
4310 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4311 | { |
4312 | b->enable_state = bp_enabled; | |
4313 | overlay_events_enabled = 1; | |
4314 | } | |
1900040c | 4315 | else |
c02f5703 MS |
4316 | { |
4317 | b->enable_state = bp_disabled; | |
4318 | overlay_events_enabled = 0; | |
4319 | } | |
1900040c MS |
4320 | } |
4321 | ||
4322 | void | |
4323 | enable_overlay_breakpoints (void) | |
4324 | { | |
52f0bd74 | 4325 | struct breakpoint *b; |
1900040c MS |
4326 | |
4327 | ALL_BREAKPOINTS (b) | |
4328 | if (b->type == bp_overlay_event) | |
4329 | { | |
4330 | b->enable_state = bp_enabled; | |
4331 | check_duplicates (b); | |
c02f5703 | 4332 | overlay_events_enabled = 1; |
1900040c MS |
4333 | } |
4334 | } | |
4335 | ||
4336 | void | |
4337 | disable_overlay_breakpoints (void) | |
4338 | { | |
52f0bd74 | 4339 | struct breakpoint *b; |
1900040c MS |
4340 | |
4341 | ALL_BREAKPOINTS (b) | |
4342 | if (b->type == bp_overlay_event) | |
4343 | { | |
4344 | b->enable_state = bp_disabled; | |
4345 | check_duplicates (b); | |
c02f5703 | 4346 | overlay_events_enabled = 0; |
1900040c MS |
4347 | } |
4348 | } | |
4349 | ||
c4093a6a | 4350 | struct breakpoint * |
fba45db2 | 4351 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4352 | { |
4353 | struct breakpoint *b; | |
c4093a6a | 4354 | |
1900040c | 4355 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4356 | |
b5de0fa7 | 4357 | b->enable_state = bp_enabled; |
c4093a6a | 4358 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4359 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4360 | |
4361 | return b; | |
4362 | } | |
4363 | ||
4364 | void | |
4365 | remove_thread_event_breakpoints (void) | |
4366 | { | |
4367 | struct breakpoint *b, *temp; | |
4368 | ||
4369 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4370 | if (b->type == bp_thread_event) | |
4371 | delete_breakpoint (b); | |
4372 | } | |
4373 | ||
0101ce28 JJ |
4374 | struct captured_parse_breakpoint_args |
4375 | { | |
4376 | char **arg_p; | |
4377 | struct symtabs_and_lines *sals_p; | |
4378 | char ***addr_string_p; | |
4379 | int *not_found_ptr; | |
4380 | }; | |
4381 | ||
4382 | struct lang_and_radix | |
4383 | { | |
4384 | enum language lang; | |
4385 | int radix; | |
4386 | }; | |
4387 | ||
4388 | /* Cleanup helper routine to restore the current language and | |
4389 | input radix. */ | |
4390 | static void | |
4391 | do_restore_lang_radix_cleanup (void *old) | |
4392 | { | |
4393 | struct lang_and_radix *p = old; | |
4394 | set_language (p->lang); | |
4395 | input_radix = p->radix; | |
4396 | } | |
4397 | ||
4398 | /* Try and resolve a pending breakpoint. */ | |
4399 | static int | |
4400 | resolve_pending_breakpoint (struct breakpoint *b) | |
4401 | { | |
4402 | /* Try and reparse the breakpoint in case the shared library | |
4403 | is now loaded. */ | |
4404 | struct symtabs_and_lines sals; | |
4405 | struct symtab_and_line pending_sal; | |
4406 | char **cond_string = (char **) NULL; | |
4407 | char *copy_arg = b->addr_string; | |
4408 | char **addr_string; | |
4409 | char *errmsg; | |
4410 | int rc; | |
4411 | int not_found = 0; | |
4412 | struct ui_file *old_gdb_stderr; | |
4413 | struct lang_and_radix old_lr; | |
4414 | struct cleanup *old_chain; | |
4415 | ||
4416 | /* Set language, input-radix, then reissue breakpoint command. | |
4417 | Ensure the language and input-radix are restored afterwards. */ | |
4418 | old_lr.lang = current_language->la_language; | |
4419 | old_lr.radix = input_radix; | |
4420 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4421 | ||
4422 | set_language (b->language); | |
4423 | input_radix = b->input_radix; | |
4424 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4425 | ||
4426 | if (rc == GDB_RC_OK) | |
4427 | /* Pending breakpoint has been resolved. */ | |
a3f17187 | 4428 | printf_filtered (_("Pending breakpoint \"%s\" resolved\n"), b->addr_string); |
0101ce28 JJ |
4429 | |
4430 | do_cleanups (old_chain); | |
4431 | return rc; | |
4432 | } | |
4433 | ||
cae688ec JJ |
4434 | void |
4435 | remove_solib_event_breakpoints (void) | |
4436 | { | |
4437 | struct breakpoint *b, *temp; | |
4438 | ||
4439 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4440 | if (b->type == bp_shlib_event) | |
4441 | delete_breakpoint (b); | |
4442 | } | |
4443 | ||
4444 | struct breakpoint * | |
4445 | create_solib_event_breakpoint (CORE_ADDR address) | |
4446 | { | |
4447 | struct breakpoint *b; | |
4448 | ||
4449 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4450 | return b; | |
4451 | } | |
4452 | ||
4453 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4454 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4455 | ||
4456 | void | |
cb851954 | 4457 | disable_breakpoints_in_shlibs (void) |
cae688ec JJ |
4458 | { |
4459 | struct breakpoint *b; | |
4460 | int disabled_shlib_breaks = 0; | |
4461 | ||
cae688ec JJ |
4462 | ALL_BREAKPOINTS (b) |
4463 | { | |
a77053c2 MK |
4464 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
4465 | && breakpoint_enabled (b) && !b->loc->duplicate | |
4466 | #ifdef PC_SOLIB | |
4467 | && PC_SOLIB (b->loc->address) | |
4468 | #else | |
4469 | && solib_address (b->loc->address) | |
4470 | #endif | |
4471 | ) | |
cae688ec | 4472 | b->enable_state = bp_shlib_disabled; |
cae688ec JJ |
4473 | } |
4474 | } | |
4475 | ||
84acb35a JJ |
4476 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4477 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4478 | ||
4479 | void | |
4480 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4481 | { | |
4482 | struct breakpoint *b; | |
4483 | int disabled_shlib_breaks = 0; | |
4484 | ||
84acb35a JJ |
4485 | ALL_BREAKPOINTS (b) |
4486 | { | |
4487 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4488 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
a77053c2 | 4489 | && breakpoint_enabled (b) && !b->loc->duplicate) |
84acb35a | 4490 | { |
a77053c2 | 4491 | #ifdef PC_SOLIB |
84acb35a | 4492 | char *so_name = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4493 | #else |
4494 | char *so_name = solib_address (b->loc->address); | |
4495 | #endif | |
4496 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a JJ |
4497 | { |
4498 | b->enable_state = bp_shlib_disabled; | |
4499 | /* At this point, we cannot rely on remove_breakpoint | |
4500 | succeeding so we must mark the breakpoint as not inserted | |
4501 | to prevent future errors occurring in remove_breakpoints. */ | |
4502 | b->loc->inserted = 0; | |
4503 | if (!disabled_shlib_breaks) | |
4504 | { | |
4505 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4506 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4507 | so_name); |
4508 | } | |
4509 | disabled_shlib_breaks = 1; | |
4510 | } | |
4511 | } | |
4512 | } | |
84acb35a JJ |
4513 | } |
4514 | ||
c906108c SS |
4515 | /* Try to reenable any breakpoints in shared libraries. */ |
4516 | void | |
fba45db2 | 4517 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4518 | { |
0101ce28 | 4519 | struct breakpoint *b, *tmp; |
c906108c | 4520 | |
0101ce28 JJ |
4521 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4522 | { | |
b5de0fa7 | 4523 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 | 4524 | { |
47b667de AC |
4525 | gdb_byte buf[1]; |
4526 | char *lib; | |
0101ce28 | 4527 | |
a77053c2 MK |
4528 | /* Do not reenable the breakpoint if the shared library is |
4529 | still not mapped in. */ | |
4530 | #ifdef PC_SOLIB | |
0101ce28 | 4531 | lib = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4532 | #else |
4533 | lib = solib_address (b->loc->address); | |
4534 | #endif | |
0101ce28 JJ |
4535 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) |
4536 | b->enable_state = bp_enabled; | |
4537 | } | |
4538 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4539 | { | |
4540 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4541 | delete_breakpoint (b); | |
4542 | } | |
4543 | } | |
c906108c SS |
4544 | } |
4545 | ||
c906108c | 4546 | static void |
fba45db2 KB |
4547 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4548 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4549 | { |
c5aa993b | 4550 | struct breakpoint *b; |
c906108c | 4551 | struct symtabs_and_lines sals; |
c5aa993b JM |
4552 | struct cleanup *old_chain; |
4553 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4554 | char *addr_start = hookname; |
4555 | char *addr_end = NULL; | |
4556 | char **canonical = (char **) NULL; | |
4557 | int thread = -1; /* All threads. */ | |
4558 | ||
1272ad14 MS |
4559 | /* Set a breakpoint on the specified hook. */ |
4560 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, | |
4561 | 0, &canonical, NULL); | |
c906108c | 4562 | addr_end = hookname; |
c5aa993b | 4563 | |
c906108c SS |
4564 | if (sals.nelts == 0) |
4565 | { | |
8a3fe4f8 AC |
4566 | warning (_("Unable to set a breakpoint on dynamic linker callback.\n" |
4567 | "Suggest linking with /opt/langtools/lib/end.o.\n" | |
4568 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4569 | return; |
4570 | } | |
4571 | if (sals.nelts != 1) | |
4572 | { | |
8a3fe4f8 AC |
4573 | warning (_("Unable to set unique breakpoint on dynamic linker callback.\n" |
4574 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4575 | return; |
4576 | } | |
4577 | ||
53a5351d JM |
4578 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4579 | in case the following errors out. */ | |
b8c9b27d | 4580 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4581 | if (canonical != (char **) NULL) |
c906108c | 4582 | { |
b8c9b27d | 4583 | make_cleanup (xfree, canonical); |
c906108c SS |
4584 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4585 | if (canonical[0] != NULL) | |
b8c9b27d | 4586 | make_cleanup (xfree, canonical[0]); |
c906108c | 4587 | } |
c5aa993b | 4588 | |
c906108c | 4589 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4590 | |
c906108c | 4591 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4592 | if (canonical != (char **) NULL) |
c906108c | 4593 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4594 | |
4d28f7a8 | 4595 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
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 | 4601 | b->thread = thread; |
c5aa993b JM |
4602 | |
4603 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4604 | b->addr_string = canonical[0]; |
4605 | else if (addr_start) | |
4606 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4607 | |
b5de0fa7 EZ |
4608 | b->enable_state = bp_enabled; |
4609 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4610 | |
c906108c SS |
4611 | if (dll_pathname == NULL) |
4612 | b->dll_pathname = NULL; | |
4613 | else | |
4614 | { | |
4615 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4616 | strcpy (b->dll_pathname, dll_pathname); | |
4617 | } | |
c5aa993b | 4618 | |
c906108c SS |
4619 | mention (b); |
4620 | do_cleanups (old_chain); | |
4621 | } | |
4622 | ||
4623 | void | |
fba45db2 KB |
4624 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4625 | char *dll_pathname, char *cond_string) | |
c906108c | 4626 | { |
53a5351d JM |
4627 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4628 | cond_string, bp_catch_load); | |
c906108c SS |
4629 | } |
4630 | ||
4631 | void | |
fba45db2 KB |
4632 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4633 | char *dll_pathname, char *cond_string) | |
c906108c | 4634 | { |
1272ad14 | 4635 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
53a5351d | 4636 | cond_string, bp_catch_unload); |
c906108c SS |
4637 | } |
4638 | ||
4639 | static void | |
fba45db2 KB |
4640 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4641 | enum bptype bp_kind) | |
c906108c | 4642 | { |
c5aa993b JM |
4643 | struct symtab_and_line sal; |
4644 | struct breakpoint *b; | |
4645 | int thread = -1; /* All threads. */ | |
4646 | ||
fe39c653 | 4647 | init_sal (&sal); |
c906108c SS |
4648 | sal.pc = 0; |
4649 | sal.symtab = NULL; | |
4650 | sal.line = 0; | |
c5aa993b | 4651 | |
4d28f7a8 | 4652 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4653 | set_breakpoint_count (breakpoint_count + 1); |
4654 | b->number = breakpoint_count; | |
4655 | b->cond = NULL; | |
53a5351d JM |
4656 | b->cond_string = (cond_string == NULL) ? |
4657 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4658 | b->thread = thread; |
4659 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4660 | b->enable_state = bp_enabled; |
4661 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4662 | b->forked_inferior_pid = 0; |
c5aa993b | 4663 | |
c906108c SS |
4664 | mention (b); |
4665 | } | |
4666 | ||
4667 | void | |
fba45db2 | 4668 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4669 | { |
4670 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4671 | } | |
c5aa993b | 4672 | |
c906108c | 4673 | void |
fba45db2 | 4674 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4675 | { |
4676 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4677 | } | |
4678 | ||
4679 | void | |
fba45db2 | 4680 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4681 | { |
c5aa993b JM |
4682 | struct symtab_and_line sal; |
4683 | struct breakpoint *b; | |
4684 | int thread = -1; /* All threads. */ | |
c906108c | 4685 | |
fe39c653 | 4686 | init_sal (&sal); |
c906108c SS |
4687 | sal.pc = 0; |
4688 | sal.symtab = NULL; | |
4689 | sal.line = 0; | |
4690 | ||
4d28f7a8 | 4691 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4692 | set_breakpoint_count (breakpoint_count + 1); |
4693 | b->number = breakpoint_count; | |
4694 | b->cond = NULL; | |
53a5351d JM |
4695 | b->cond_string = (cond_string == NULL) ? |
4696 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4697 | b->thread = thread; |
4698 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4699 | b->enable_state = bp_enabled; |
4700 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4701 | |
c906108c SS |
4702 | mention (b); |
4703 | } | |
4704 | ||
4705 | static int | |
fba45db2 | 4706 | hw_breakpoint_used_count (void) |
c906108c | 4707 | { |
52f0bd74 | 4708 | struct breakpoint *b; |
c906108c SS |
4709 | int i = 0; |
4710 | ||
4711 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4712 | { |
b5de0fa7 | 4713 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4714 | i++; |
4715 | } | |
c906108c SS |
4716 | |
4717 | return i; | |
4718 | } | |
4719 | ||
4720 | static int | |
fba45db2 | 4721 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4722 | { |
52f0bd74 | 4723 | struct breakpoint *b; |
c906108c SS |
4724 | int i = 0; |
4725 | ||
4726 | *other_type_used = 0; | |
4727 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4728 | { |
468d015d | 4729 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4730 | { |
4731 | if (b->type == type) | |
4732 | i++; | |
4733 | else if ((b->type == bp_hardware_watchpoint || | |
4734 | b->type == bp_read_watchpoint || | |
468d015d | 4735 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4736 | *other_type_used = 1; |
4737 | } | |
4738 | } | |
c906108c SS |
4739 | return i; |
4740 | } | |
4741 | ||
53a5351d JM |
4742 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4743 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4744 | |
53a5351d JM |
4745 | FIXME - This ought to be done by setting a temporary breakpoint |
4746 | that gets deleted automatically... */ | |
c906108c SS |
4747 | |
4748 | void | |
818dd999 | 4749 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4750 | { |
52f0bd74 | 4751 | struct breakpoint *b; |
c906108c SS |
4752 | |
4753 | ALL_BREAKPOINTS (b) | |
4754 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4755 | { |
5cab636d | 4756 | b->loc->requested_address = pc; |
88f7da05 KB |
4757 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4758 | b->type); | |
b5de0fa7 | 4759 | b->enable_state = bp_enabled; |
818dd999 | 4760 | b->frame_id = frame_id; |
9f60f21b | 4761 | check_duplicates (b); |
c5aa993b JM |
4762 | return; |
4763 | } | |
c906108c SS |
4764 | } |
4765 | ||
4766 | void | |
fba45db2 | 4767 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4768 | { |
c5aa993b | 4769 | struct breakpoint *b; |
c906108c SS |
4770 | |
4771 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4772 | { |
4773 | if (((b->type == bp_watchpoint) | |
4774 | || (b->type == bp_hardware_watchpoint) | |
4775 | || (b->type == bp_read_watchpoint) | |
4776 | || (b->type == bp_access_watchpoint) | |
4777 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4778 | && breakpoint_enabled (b)) |
c5aa993b | 4779 | { |
b5de0fa7 | 4780 | b->enable_state = bp_call_disabled; |
9f60f21b | 4781 | check_duplicates (b); |
c5aa993b JM |
4782 | } |
4783 | } | |
c906108c SS |
4784 | } |
4785 | ||
4786 | void | |
fba45db2 | 4787 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4788 | { |
c5aa993b | 4789 | struct breakpoint *b; |
c906108c SS |
4790 | |
4791 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4792 | { |
4793 | if (((b->type == bp_watchpoint) | |
4794 | || (b->type == bp_hardware_watchpoint) | |
4795 | || (b->type == bp_read_watchpoint) | |
4796 | || (b->type == bp_access_watchpoint) | |
4797 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4798 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4799 | { |
b5de0fa7 | 4800 | b->enable_state = bp_enabled; |
9f60f21b | 4801 | check_duplicates (b); |
c5aa993b JM |
4802 | } |
4803 | } | |
c906108c SS |
4804 | } |
4805 | ||
4806 | ||
4807 | /* Set a breakpoint that will evaporate an end of command | |
4808 | at address specified by SAL. | |
4809 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4810 | ||
4811 | struct breakpoint * | |
818dd999 | 4812 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4813 | enum bptype type) |
c906108c | 4814 | { |
52f0bd74 | 4815 | struct breakpoint *b; |
4d28f7a8 | 4816 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4817 | b->enable_state = bp_enabled; |
4818 | b->disposition = disp_donttouch; | |
818dd999 | 4819 | b->frame_id = frame_id; |
c906108c SS |
4820 | |
4821 | /* If we're debugging a multi-threaded program, then we | |
4822 | want momentary breakpoints to be active in only a | |
4823 | single thread of control. */ | |
39f77062 KB |
4824 | if (in_thread_list (inferior_ptid)) |
4825 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4826 | |
4827 | return b; | |
4828 | } | |
c906108c | 4829 | \f |
c5aa993b | 4830 | |
c906108c SS |
4831 | /* Tell the user we have just set a breakpoint B. */ |
4832 | ||
4833 | static void | |
fba45db2 | 4834 | mention (struct breakpoint *b) |
c906108c SS |
4835 | { |
4836 | int say_where = 0; | |
3b31d625 | 4837 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4838 | struct ui_stream *stb; |
4839 | ||
4840 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4841 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4842 | |
9a4105ab AC |
4843 | /* FIXME: This is misplaced; mention() is called by things (like |
4844 | hitting a watchpoint) other than breakpoint creation. It should | |
4845 | be possible to clean this up and at the same time replace the | |
4846 | random calls to breakpoint_changed with this hook, as has already | |
4847 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4848 | if (deprecated_create_breakpoint_hook) | |
4849 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4850 | breakpoint_create_event (b->number); |
c906108c | 4851 | |
3086aeae DJ |
4852 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4853 | b->ops->print_mention (b); | |
4854 | else | |
4855 | switch (b->type) | |
4856 | { | |
4857 | case bp_none: | |
a3f17187 | 4858 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4859 | break; |
4860 | case bp_watchpoint: | |
4861 | ui_out_text (uiout, "Watchpoint "); | |
4862 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4863 | ui_out_field_int (uiout, "number", b->number); | |
4864 | ui_out_text (uiout, ": "); | |
4865 | print_expression (b->exp, stb->stream); | |
4866 | ui_out_field_stream (uiout, "exp", stb); | |
4867 | do_cleanups (ui_out_chain); | |
4868 | break; | |
4869 | case bp_hardware_watchpoint: | |
4870 | ui_out_text (uiout, "Hardware watchpoint "); | |
4871 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4872 | ui_out_field_int (uiout, "number", b->number); | |
4873 | ui_out_text (uiout, ": "); | |
4874 | print_expression (b->exp, stb->stream); | |
4875 | ui_out_field_stream (uiout, "exp", stb); | |
4876 | do_cleanups (ui_out_chain); | |
4877 | break; | |
4878 | case bp_read_watchpoint: | |
4879 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4880 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4881 | ui_out_field_int (uiout, "number", b->number); | |
4882 | ui_out_text (uiout, ": "); | |
4883 | print_expression (b->exp, stb->stream); | |
4884 | ui_out_field_stream (uiout, "exp", stb); | |
4885 | do_cleanups (ui_out_chain); | |
4886 | break; | |
4887 | case bp_access_watchpoint: | |
4888 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4889 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4890 | ui_out_field_int (uiout, "number", b->number); | |
4891 | ui_out_text (uiout, ": "); | |
4892 | print_expression (b->exp, stb->stream); | |
4893 | ui_out_field_stream (uiout, "exp", stb); | |
4894 | do_cleanups (ui_out_chain); | |
4895 | break; | |
4896 | case bp_breakpoint: | |
4897 | if (ui_out_is_mi_like_p (uiout)) | |
4898 | { | |
4899 | say_where = 0; | |
4900 | break; | |
4901 | } | |
a3f17187 | 4902 | printf_filtered (_("Breakpoint %d"), b->number); |
3086aeae DJ |
4903 | say_where = 1; |
4904 | break; | |
4905 | case bp_hardware_breakpoint: | |
4906 | if (ui_out_is_mi_like_p (uiout)) | |
4907 | { | |
4908 | say_where = 0; | |
4909 | break; | |
4910 | } | |
a3f17187 | 4911 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4912 | say_where = 1; |
4913 | break; | |
4914 | case bp_catch_load: | |
4915 | case bp_catch_unload: | |
a3f17187 | 4916 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4917 | b->number, |
4918 | (b->type == bp_catch_load) ? "load" : "unload", | |
4919 | (b->dll_pathname != NULL) ? | |
4920 | b->dll_pathname : "<any library>"); | |
4921 | break; | |
4922 | case bp_catch_fork: | |
4923 | case bp_catch_vfork: | |
a3f17187 | 4924 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4925 | b->number, |
4926 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4927 | break; | |
4928 | case bp_catch_exec: | |
a3f17187 | 4929 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4930 | b->number); |
4931 | break; | |
4932 | case bp_catch_catch: | |
4933 | case bp_catch_throw: | |
a3f17187 | 4934 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4935 | b->number, |
4936 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4937 | break; | |
4938 | ||
4939 | case bp_until: | |
4940 | case bp_finish: | |
4941 | case bp_longjmp: | |
4942 | case bp_longjmp_resume: | |
4943 | case bp_step_resume: | |
3086aeae DJ |
4944 | case bp_call_dummy: |
4945 | case bp_watchpoint_scope: | |
4946 | case bp_shlib_event: | |
4947 | case bp_thread_event: | |
4948 | case bp_overlay_event: | |
4949 | break; | |
4950 | } | |
c906108c | 4951 | |
c906108c SS |
4952 | if (say_where) |
4953 | { | |
a3f17187 AC |
4954 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
4955 | single string. */ | |
0101ce28 | 4956 | if (b->pending) |
c906108c | 4957 | { |
a3f17187 | 4958 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
4959 | } |
4960 | else | |
4961 | { | |
4962 | if (addressprint || b->source_file == NULL) | |
4963 | { | |
4964 | printf_filtered (" at "); | |
66bf4b3a | 4965 | deprecated_print_address_numeric (b->loc->address, 1, gdb_stdout); |
0101ce28 JJ |
4966 | } |
4967 | if (b->source_file) | |
4968 | printf_filtered (": file %s, line %d.", | |
4969 | b->source_file, b->line_number); | |
c906108c | 4970 | } |
c906108c | 4971 | } |
8b93c638 | 4972 | do_cleanups (old_chain); |
9dc5e2a9 | 4973 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 4974 | return; |
c906108c SS |
4975 | printf_filtered ("\n"); |
4976 | } | |
c906108c | 4977 | \f |
c5aa993b | 4978 | |
c3f6f71d JM |
4979 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4980 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4981 | COND[i] and COND_STRING[i] values. | |
4982 | ||
0101ce28 JJ |
4983 | The parameter PENDING_BP points to a pending breakpoint that is |
4984 | the basis of the breakpoints currently being created. The pending | |
4985 | breakpoint may contain a separate condition string or commands | |
4986 | that were added after the initial pending breakpoint was created. | |
4987 | ||
c3f6f71d JM |
4988 | NOTE: If the function succeeds, the caller is expected to cleanup |
4989 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4990 | array contents). If the function fails (error() is called), the | |
4991 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4992 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4993 | |
4994 | static void | |
c3f6f71d JM |
4995 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4996 | struct expression **cond, char **cond_string, | |
4997 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
4998 | int thread, int ignore_count, int from_tty, |
4999 | struct breakpoint *pending_bp) | |
c906108c | 5000 | { |
c3f6f71d JM |
5001 | if (type == bp_hardware_breakpoint) |
5002 | { | |
5003 | int i = hw_breakpoint_used_count (); | |
5004 | int target_resources_ok = | |
5005 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5006 | i + sals.nelts, 0); | |
5007 | if (target_resources_ok == 0) | |
8a3fe4f8 | 5008 | error (_("No hardware breakpoint support in the target.")); |
c3f6f71d | 5009 | else if (target_resources_ok < 0) |
8a3fe4f8 | 5010 | error (_("Hardware breakpoints used exceeds limit.")); |
c3f6f71d | 5011 | } |
c906108c | 5012 | |
c3f6f71d JM |
5013 | /* Now set all the breakpoints. */ |
5014 | { | |
5015 | int i; | |
5016 | for (i = 0; i < sals.nelts; i++) | |
5017 | { | |
5018 | struct breakpoint *b; | |
5019 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 5020 | |
c3f6f71d | 5021 | if (from_tty) |
d674a25c | 5022 | describe_other_breakpoints (sal.pc, sal.section, thread); |
c3f6f71d | 5023 | |
4d28f7a8 | 5024 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
5025 | set_breakpoint_count (breakpoint_count + 1); |
5026 | b->number = breakpoint_count; | |
c3f6f71d JM |
5027 | b->cond = cond[i]; |
5028 | b->thread = thread; | |
d8ef46f5 DJ |
5029 | if (addr_string[i]) |
5030 | b->addr_string = addr_string[i]; | |
5031 | else | |
5032 | /* addr_string has to be used or breakpoint_re_set will delete | |
5033 | me. */ | |
b435e160 | 5034 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
5035 | b->cond_string = cond_string[i]; |
5036 | b->ignore_count = ignore_count; | |
b5de0fa7 | 5037 | b->enable_state = bp_enabled; |
c3f6f71d | 5038 | b->disposition = disposition; |
0101ce28 JJ |
5039 | /* If resolving a pending breakpoint, a check must be made to see if |
5040 | the user has specified a new condition or commands for the | |
5041 | breakpoint. A new condition will override any condition that was | |
5042 | initially specified with the initial breakpoint command. */ | |
5043 | if (pending_bp) | |
5044 | { | |
5045 | char *arg; | |
5046 | if (pending_bp->cond_string) | |
5047 | { | |
5048 | arg = pending_bp->cond_string; | |
5049 | b->cond_string = savestring (arg, strlen (arg)); | |
5050 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
5051 | if (*arg) | |
8a3fe4f8 | 5052 | error (_("Junk at end of pending breakpoint condition expression")); |
0101ce28 JJ |
5053 | } |
5054 | /* If there are commands associated with the breakpoint, they should | |
5055 | be copied too. */ | |
5056 | if (pending_bp->commands) | |
5057 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
5058 | |
5059 | /* We have to copy over the ignore_count and thread as well. */ | |
5060 | b->ignore_count = pending_bp->ignore_count; | |
5061 | b->thread = pending_bp->thread; | |
0101ce28 | 5062 | } |
c3f6f71d JM |
5063 | mention (b); |
5064 | } | |
5065 | } | |
5066 | } | |
c906108c | 5067 | |
c3f6f71d JM |
5068 | /* Parse ARG which is assumed to be a SAL specification possibly |
5069 | followed by conditionals. On return, SALS contains an array of SAL | |
5070 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5071 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5072 | |
b9362cc7 | 5073 | static void |
c3f6f71d JM |
5074 | parse_breakpoint_sals (char **address, |
5075 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5076 | char ***addr_string, |
5077 | int *not_found_ptr) | |
c3f6f71d JM |
5078 | { |
5079 | char *addr_start = *address; | |
5080 | *addr_string = NULL; | |
5081 | /* If no arg given, or if first arg is 'if ', use the default | |
5082 | breakpoint. */ | |
5083 | if ((*address) == NULL | |
5084 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5085 | { |
5086 | if (default_breakpoint_valid) | |
5087 | { | |
c3f6f71d | 5088 | struct symtab_and_line sal; |
fe39c653 | 5089 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5090 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5091 | xmalloc (sizeof (struct symtab_and_line)); |
5092 | sal.pc = default_breakpoint_address; | |
5093 | sal.line = default_breakpoint_line; | |
5094 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5095 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5096 | sals->sals[0] = sal; |
5097 | sals->nelts = 1; | |
c906108c SS |
5098 | } |
5099 | else | |
8a3fe4f8 | 5100 | error (_("No default breakpoint address now.")); |
c906108c SS |
5101 | } |
5102 | else | |
5103 | { | |
c906108c | 5104 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5105 | current_source_symtab (which is decode_line_1's default). This |
5106 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5107 | leaving default_breakpoint_* alone. |
5108 | ObjC: However, don't match an Objective-C method name which | |
5109 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5110 | |
c214a6fd | 5111 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5112 | |
c906108c | 5113 | if (default_breakpoint_valid |
0378c332 | 5114 | && (!cursal.symtab |
1aeae86e AF |
5115 | || ((strchr ("+-", (*address)[0]) != NULL) |
5116 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5117 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5118 | default_breakpoint_line, addr_string, |
5119 | not_found_ptr); | |
c906108c | 5120 | else |
0101ce28 JJ |
5121 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5122 | addr_string, not_found_ptr); | |
c906108c | 5123 | } |
c3f6f71d JM |
5124 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5125 | if (sals->nelts > 0 && *addr_string == NULL) | |
5126 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5127 | if (addr_start != (*address)) | |
c906108c | 5128 | { |
c3f6f71d JM |
5129 | int i; |
5130 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5131 | { |
c3f6f71d JM |
5132 | /* Add the string if not present. */ |
5133 | if ((*addr_string)[i] == NULL) | |
5134 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5135 | } |
5136 | } | |
c3f6f71d | 5137 | } |
c906108c | 5138 | |
c906108c | 5139 | |
c3f6f71d JM |
5140 | /* Convert each SAL into a real PC. Verify that the PC can be |
5141 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5142 | |
b9362cc7 | 5143 | static void |
c3f6f71d JM |
5144 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5145 | char *address) | |
5146 | { | |
5147 | int i; | |
5148 | for (i = 0; i < sals->nelts; i++) | |
5149 | { | |
5150 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5151 | |
5152 | /* It's possible for the PC to be nonzero, but still an illegal | |
5153 | value on some targets. | |
5154 | ||
5155 | For example, on HP-UX if you start gdb, and before running the | |
5156 | inferior you try to set a breakpoint on a shared library function | |
5157 | "foo" where the inferior doesn't call "foo" directly but does | |
5158 | pass its address to another function call, then we do find a | |
5159 | minimal symbol for the "foo", but it's address is invalid. | |
5160 | (Appears to be an index into a table that the loader sets up | |
5161 | when the inferior is run.) | |
5162 | ||
5163 | Give the target a chance to bless sals.sals[i].pc before we | |
5164 | try to make a breakpoint for it. */ | |
45b75230 AC |
5165 | #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE |
5166 | if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) | |
c5aa993b | 5167 | { |
c3f6f71d | 5168 | if (address == NULL) |
8a3fe4f8 | 5169 | error (_("Cannot break without a running program.")); |
c3f6f71d | 5170 | else |
8a3fe4f8 | 5171 | error (_("Cannot break on %s without a running program."), |
c3f6f71d | 5172 | address); |
c5aa993b | 5173 | } |
45b75230 | 5174 | #endif |
c3f6f71d JM |
5175 | } |
5176 | } | |
5177 | ||
05ff989b | 5178 | static void |
0101ce28 JJ |
5179 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5180 | { | |
5181 | struct captured_parse_breakpoint_args *args = data; | |
5182 | ||
5183 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5184 | args->not_found_ptr); | |
0101ce28 JJ |
5185 | } |
5186 | ||
c3f6f71d JM |
5187 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5188 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5189 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5190 | |
0101ce28 JJ |
5191 | PENDING_BP is non-NULL when this function is being called to resolve |
5192 | a pending breakpoint. */ | |
5193 | ||
5194 | static int | |
5195 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d | 5196 | { |
71fff37b | 5197 | struct gdb_exception e; |
c3f6f71d JM |
5198 | int tempflag, hardwareflag; |
5199 | struct symtabs_and_lines sals; | |
52f0bd74 | 5200 | struct expression **cond = 0; |
0101ce28 | 5201 | struct symtab_and_line pending_sal; |
c3f6f71d | 5202 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5203 | char *copy_arg; |
5204 | char *err_msg; | |
c3f6f71d JM |
5205 | char *addr_start = arg; |
5206 | char **addr_string; | |
5207 | struct cleanup *old_chain; | |
5208 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5209 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5210 | int i; |
0101ce28 | 5211 | int pending = 0; |
c3f6f71d JM |
5212 | int thread = -1; |
5213 | int ignore_count = 0; | |
0101ce28 | 5214 | int not_found = 0; |
c3f6f71d JM |
5215 | |
5216 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5217 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5218 | |
c3f6f71d JM |
5219 | sals.sals = NULL; |
5220 | sals.nelts = 0; | |
5221 | addr_string = NULL; | |
c3f6f71d | 5222 | |
0101ce28 JJ |
5223 | parse_args.arg_p = &arg; |
5224 | parse_args.sals_p = &sals; | |
5225 | parse_args.addr_string_p = &addr_string; | |
5226 | parse_args.not_found_ptr = ¬_found; | |
5227 | ||
05ff989b AC |
5228 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5229 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5230 | |
5231 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5232 | switch (e.reason) |
0101ce28 | 5233 | { |
05ff989b | 5234 | case RETURN_QUIT: |
9cbc821d | 5235 | exception_print (gdb_stderr, e); |
05ff989b AC |
5236 | return e.reason; |
5237 | case RETURN_ERROR: | |
5238 | switch (e.error) | |
0101ce28 | 5239 | { |
05ff989b AC |
5240 | case NOT_FOUND_ERROR: |
5241 | /* If called to resolve pending breakpoint, just return | |
5242 | error code. */ | |
0101ce28 | 5243 | if (pending_bp) |
05ff989b | 5244 | return e.reason; |
0101ce28 | 5245 | |
9cbc821d | 5246 | exception_print (gdb_stderr, e); |
fa8d40ab | 5247 | |
05ff989b AC |
5248 | /* If pending breakpoint support is turned off, throw |
5249 | error. */ | |
fa8d40ab JJ |
5250 | |
5251 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
315a522e | 5252 | deprecated_throw_reason (RETURN_ERROR); |
fa8d40ab | 5253 | |
05ff989b AC |
5254 | /* If pending breakpoint support is auto query and the user |
5255 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5256 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5257 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
05ff989b | 5258 | return e.reason; |
fa8d40ab | 5259 | |
05ff989b AC |
5260 | /* At this point, either the user was queried about setting |
5261 | a pending breakpoint and selected yes, or pending | |
5262 | breakpoint behavior is on and thus a pending breakpoint | |
5263 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5264 | copy_arg = xstrdup (addr_start); |
5265 | addr_string = ©_arg; | |
5266 | sals.nelts = 1; | |
5267 | sals.sals = &pending_sal; | |
5268 | pending_sal.pc = 0; | |
5269 | pending = 1; | |
05ff989b AC |
5270 | break; |
5271 | default: | |
9cbc821d | 5272 | exception_print (gdb_stderr, e); |
05ff989b | 5273 | return e.reason; |
0101ce28 | 5274 | } |
05ff989b AC |
5275 | default: |
5276 | if (!sals.nelts) | |
5277 | return GDB_RC_FAIL; | |
0101ce28 | 5278 | } |
c3f6f71d JM |
5279 | |
5280 | /* Create a chain of things that always need to be cleaned up. */ | |
5281 | old_chain = make_cleanup (null_cleanup, 0); | |
5282 | ||
0101ce28 JJ |
5283 | if (!pending) |
5284 | { | |
5285 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5286 | make_cleanup (xfree, sals.sals); | |
5287 | ||
5288 | /* Cleanup the addr_string array but not its contents. */ | |
5289 | make_cleanup (xfree, addr_string); | |
5290 | } | |
c3f6f71d JM |
5291 | |
5292 | /* Allocate space for all the cond expressions. */ | |
5293 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5294 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5295 | |
5296 | /* Allocate space for all the cond strings. */ | |
5297 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5298 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5299 | |
5300 | /* ----------------------------- SNIP ----------------------------- | |
5301 | Anything added to the cleanup chain beyond this point is assumed | |
5302 | to be part of a breakpoint. If the breakpoint create succeeds | |
5303 | then the memory is not reclaimed. */ | |
5304 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5305 | ||
5306 | /* Mark the contents of the addr_string for cleanup. These go on | |
5307 | the breakpoint_chain and only occure if the breakpoint create | |
5308 | fails. */ | |
5309 | for (i = 0; i < sals.nelts; i++) | |
5310 | { | |
5311 | if (addr_string[i] != NULL) | |
b8c9b27d | 5312 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5313 | } |
5314 | ||
5315 | /* Resolve all line numbers to PC's and verify that the addresses | |
5316 | are ok for the target. */ | |
0101ce28 JJ |
5317 | if (!pending) |
5318 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5319 | |
5320 | /* Verify that condition can be parsed, before setting any | |
5321 | breakpoints. Allocate a separate condition expression for each | |
5322 | breakpoint. */ | |
5323 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5324 | if (!pending) |
c3f6f71d | 5325 | { |
0101ce28 | 5326 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5327 | { |
0101ce28 JJ |
5328 | char *tok = arg; |
5329 | while (tok && *tok) | |
c906108c | 5330 | { |
0101ce28 JJ |
5331 | char *end_tok; |
5332 | int toklen; | |
5333 | char *cond_start = NULL; | |
5334 | char *cond_end = NULL; | |
5335 | while (*tok == ' ' || *tok == '\t') | |
5336 | tok++; | |
5337 | ||
5338 | end_tok = tok; | |
5339 | ||
5340 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5341 | end_tok++; | |
5342 | ||
5343 | toklen = end_tok - tok; | |
5344 | ||
5345 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5346 | { | |
5347 | tok = cond_start = end_tok + 1; | |
5348 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5349 | 0); | |
5350 | make_cleanup (xfree, cond[i]); | |
5351 | cond_end = tok; | |
5352 | cond_string[i] = savestring (cond_start, | |
5353 | cond_end - cond_start); | |
5354 | make_cleanup (xfree, cond_string[i]); | |
5355 | } | |
5356 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5357 | { | |
5358 | char *tmptok; | |
5359 | ||
5360 | tok = end_tok + 1; | |
5361 | tmptok = tok; | |
5362 | thread = strtol (tok, &tok, 0); | |
5363 | if (tok == tmptok) | |
8a3fe4f8 | 5364 | error (_("Junk after thread keyword.")); |
0101ce28 | 5365 | if (!valid_thread_id (thread)) |
8a3fe4f8 | 5366 | error (_("Unknown thread %d."), thread); |
0101ce28 JJ |
5367 | } |
5368 | else | |
8a3fe4f8 | 5369 | error (_("Junk at end of arguments.")); |
c906108c | 5370 | } |
c906108c | 5371 | } |
0101ce28 JJ |
5372 | create_breakpoints (sals, addr_string, cond, cond_string, |
5373 | hardwareflag ? bp_hardware_breakpoint | |
5374 | : bp_breakpoint, | |
5375 | tempflag ? disp_del : disp_donttouch, | |
5376 | thread, ignore_count, from_tty, | |
5377 | pending_bp); | |
c906108c | 5378 | } |
0101ce28 JJ |
5379 | else |
5380 | { | |
5381 | struct symtab_and_line sal; | |
5382 | struct breakpoint *b; | |
5383 | ||
5384 | sal.symtab = NULL; | |
5385 | sal.pc = 0; | |
5386 | ||
5387 | make_cleanup (xfree, copy_arg); | |
5388 | ||
5389 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5390 | : bp_breakpoint); | |
5391 | set_breakpoint_count (breakpoint_count + 1); | |
5392 | b->number = breakpoint_count; | |
5393 | b->cond = *cond; | |
5394 | b->thread = thread; | |
5395 | b->addr_string = *addr_string; | |
5396 | b->cond_string = *cond_string; | |
5397 | b->ignore_count = ignore_count; | |
5398 | b->pending = 1; | |
5399 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5400 | b->from_tty = from_tty; | |
5401 | b->flag = flag; | |
5402 | mention (b); | |
5403 | } | |
5404 | ||
c3f6f71d | 5405 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5406 | warning (_("Multiple breakpoints were set.\n" |
5407 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5408 | /* That's it. Discard the cleanups for data inserted into the |
5409 | breakpoint. */ | |
5410 | discard_cleanups (breakpoint_chain); | |
5411 | /* But cleanup everything else. */ | |
5412 | do_cleanups (old_chain); | |
0101ce28 JJ |
5413 | |
5414 | return GDB_RC_OK; | |
c3f6f71d | 5415 | } |
c906108c | 5416 | |
c3f6f71d JM |
5417 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5418 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5419 | |
c3f6f71d JM |
5420 | struct captured_breakpoint_args |
5421 | { | |
5422 | char *address; | |
5423 | char *condition; | |
5424 | int hardwareflag; | |
5425 | int tempflag; | |
5426 | int thread; | |
5427 | int ignore_count; | |
5428 | }; | |
5429 | ||
5430 | static int | |
ce43223b | 5431 | do_captured_breakpoint (struct ui_out *uiout, void *data) |
c3f6f71d JM |
5432 | { |
5433 | struct captured_breakpoint_args *args = data; | |
5434 | struct symtabs_and_lines sals; | |
52f0bd74 | 5435 | struct expression **cond; |
c3f6f71d JM |
5436 | struct cleanup *old_chain; |
5437 | struct cleanup *breakpoint_chain = NULL; | |
5438 | int i; | |
5439 | char **addr_string; | |
5440 | char **cond_string; | |
5441 | ||
5442 | char *address_end; | |
5443 | ||
5444 | /* Parse the source and lines spec. Delay check that the expression | |
5445 | didn't contain trailing garbage until after cleanups are in | |
5446 | place. */ | |
5447 | sals.sals = NULL; | |
5448 | sals.nelts = 0; | |
5449 | address_end = args->address; | |
5450 | addr_string = NULL; | |
0101ce28 | 5451 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5452 | |
5453 | if (!sals.nelts) | |
5454 | return GDB_RC_NONE; | |
5455 | ||
5456 | /* Create a chain of things at always need to be cleaned up. */ | |
5457 | old_chain = make_cleanup (null_cleanup, 0); | |
5458 | ||
5459 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5460 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5461 | |
5462 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5463 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5464 | |
5465 | /* Allocate space for all the cond expressions. */ | |
5466 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5467 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5468 | |
5469 | /* Allocate space for all the cond strings. */ | |
5470 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5471 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5472 | |
5473 | /* ----------------------------- SNIP ----------------------------- | |
5474 | Anything added to the cleanup chain beyond this point is assumed | |
5475 | to be part of a breakpoint. If the breakpoint create goes | |
5476 | through then that memory is not cleaned up. */ | |
5477 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5478 | ||
5479 | /* Mark the contents of the addr_string for cleanup. These go on | |
5480 | the breakpoint_chain and only occure if the breakpoint create | |
5481 | fails. */ | |
c906108c SS |
5482 | for (i = 0; i < sals.nelts; i++) |
5483 | { | |
c3f6f71d | 5484 | if (addr_string[i] != NULL) |
b8c9b27d | 5485 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5486 | } |
5487 | ||
c3f6f71d JM |
5488 | /* Wait until now before checking for garbage at the end of the |
5489 | address. That way cleanups can take care of freeing any | |
5490 | memory. */ | |
5491 | if (*address_end != '\0') | |
8a3fe4f8 | 5492 | error (_("Garbage %s following breakpoint address"), address_end); |
c3f6f71d JM |
5493 | |
5494 | /* Resolve all line numbers to PC's. */ | |
5495 | breakpoint_sals_to_pc (&sals, args->address); | |
5496 | ||
5497 | /* Verify that conditions can be parsed, before setting any | |
5498 | breakpoints. */ | |
5499 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5500 | { |
c3f6f71d JM |
5501 | if (args->condition != NULL) |
5502 | { | |
5503 | char *tok = args->condition; | |
5504 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5505 | if (*tok != '\0') | |
8a3fe4f8 | 5506 | error (_("Garbage %s follows condition"), tok); |
b8c9b27d | 5507 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5508 | cond_string[i] = xstrdup (args->condition); |
5509 | } | |
c906108c | 5510 | } |
c3f6f71d JM |
5511 | |
5512 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5513 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5514 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5515 | args->thread, args->ignore_count, 0/*from-tty*/, |
5516 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5517 | |
5518 | /* That's it. Discard the cleanups for data inserted into the | |
5519 | breakpoint. */ | |
5520 | discard_cleanups (breakpoint_chain); | |
5521 | /* But cleanup everything else. */ | |
c906108c | 5522 | do_cleanups (old_chain); |
c3f6f71d | 5523 | return GDB_RC_OK; |
c906108c SS |
5524 | } |
5525 | ||
c3f6f71d JM |
5526 | enum gdb_rc |
5527 | gdb_breakpoint (char *address, char *condition, | |
5528 | int hardwareflag, int tempflag, | |
ce43223b AC |
5529 | int thread, int ignore_count, |
5530 | char **error_message) | |
c3f6f71d JM |
5531 | { |
5532 | struct captured_breakpoint_args args; | |
5533 | args.address = address; | |
5534 | args.condition = condition; | |
5535 | args.hardwareflag = hardwareflag; | |
5536 | args.tempflag = tempflag; | |
5537 | args.thread = thread; | |
5538 | args.ignore_count = ignore_count; | |
b0b13bb4 DJ |
5539 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint, &args, |
5540 | error_message, RETURN_MASK_ALL) < 0) | |
5541 | return GDB_RC_FAIL; | |
5542 | else | |
5543 | return GDB_RC_OK; | |
c3f6f71d JM |
5544 | } |
5545 | ||
5546 | ||
c906108c SS |
5547 | /* Helper function for break_command_1 and disassemble_command. */ |
5548 | ||
5549 | void | |
fba45db2 | 5550 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5551 | { |
5552 | CORE_ADDR pc; | |
5553 | ||
5554 | if (sal->pc == 0 && sal->symtab != NULL) | |
5555 | { | |
5556 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5557 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5558 | sal->line, sal->symtab->filename); |
5559 | sal->pc = pc; | |
5560 | } | |
5561 | ||
5562 | if (sal->section == 0 && sal->symtab != NULL) | |
5563 | { | |
5564 | struct blockvector *bv; | |
c5aa993b JM |
5565 | struct block *b; |
5566 | struct symbol *sym; | |
5567 | int index; | |
c906108c | 5568 | |
c5aa993b | 5569 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5570 | if (bv != NULL) |
5571 | { | |
c5aa993b | 5572 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5573 | sym = block_function (b); |
5574 | if (sym != NULL) | |
5575 | { | |
5576 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5577 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5578 | } | |
5579 | else | |
5580 | { | |
5581 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5582 | have to look harder. This case can be executed if we have |
5583 | line numbers but no functions (as can happen in assembly | |
5584 | source). */ | |
c906108c | 5585 | |
c5aa993b | 5586 | struct minimal_symbol *msym; |
c906108c SS |
5587 | |
5588 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5589 | if (msym) | |
5590 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5591 | } | |
5592 | } | |
5593 | } | |
5594 | } | |
5595 | ||
5596 | void | |
fba45db2 | 5597 | break_command (char *arg, int from_tty) |
c906108c | 5598 | { |
0101ce28 | 5599 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5600 | } |
5601 | ||
c906108c | 5602 | void |
fba45db2 | 5603 | tbreak_command (char *arg, int from_tty) |
c906108c | 5604 | { |
0101ce28 | 5605 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5606 | } |
5607 | ||
c906108c | 5608 | static void |
fba45db2 | 5609 | hbreak_command (char *arg, int from_tty) |
c906108c | 5610 | { |
0101ce28 | 5611 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5612 | } |
5613 | ||
5614 | static void | |
fba45db2 | 5615 | thbreak_command (char *arg, int from_tty) |
c906108c | 5616 | { |
0101ce28 | 5617 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5618 | } |
5619 | ||
5620 | static void | |
fba45db2 | 5621 | stop_command (char *arg, int from_tty) |
c906108c | 5622 | { |
a3f17187 | 5623 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5624 | Usage: stop in <function | address>\n\ |
a3f17187 | 5625 | stop at <line>\n")); |
c906108c SS |
5626 | } |
5627 | ||
5628 | static void | |
fba45db2 | 5629 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5630 | { |
5631 | int badInput = 0; | |
5632 | ||
c5aa993b | 5633 | if (arg == (char *) NULL) |
c906108c SS |
5634 | badInput = 1; |
5635 | else if (*arg != '*') | |
5636 | { | |
5637 | char *argptr = arg; | |
5638 | int hasColon = 0; | |
5639 | ||
53a5351d JM |
5640 | /* look for a ':'. If this is a line number specification, then |
5641 | say it is bad, otherwise, it should be an address or | |
5642 | function/method name */ | |
c906108c | 5643 | while (*argptr && !hasColon) |
c5aa993b JM |
5644 | { |
5645 | hasColon = (*argptr == ':'); | |
5646 | argptr++; | |
5647 | } | |
c906108c SS |
5648 | |
5649 | if (hasColon) | |
c5aa993b | 5650 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5651 | else |
c5aa993b | 5652 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5653 | } |
5654 | ||
5655 | if (badInput) | |
a3f17187 | 5656 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5657 | else |
0101ce28 | 5658 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5659 | } |
5660 | ||
5661 | static void | |
fba45db2 | 5662 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5663 | { |
5664 | int badInput = 0; | |
5665 | ||
c5aa993b | 5666 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5667 | badInput = 1; |
5668 | else | |
5669 | { | |
5670 | char *argptr = arg; | |
5671 | int hasColon = 0; | |
5672 | ||
5673 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5674 | it is probably a line number. */ |
c906108c | 5675 | while (*argptr && !hasColon) |
c5aa993b JM |
5676 | { |
5677 | hasColon = (*argptr == ':'); | |
5678 | argptr++; | |
5679 | } | |
c906108c SS |
5680 | |
5681 | if (hasColon) | |
c5aa993b | 5682 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5683 | else |
c5aa993b | 5684 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5685 | } |
5686 | ||
5687 | if (badInput) | |
a3f17187 | 5688 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5689 | else |
0101ce28 | 5690 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5691 | } |
5692 | ||
53a5351d JM |
5693 | /* accessflag: hw_write: watch write, |
5694 | hw_read: watch read, | |
5695 | hw_access: watch access (read or write) */ | |
c906108c | 5696 | static void |
fba45db2 | 5697 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5698 | { |
5699 | struct breakpoint *b; | |
5700 | struct symtab_and_line sal; | |
5701 | struct expression *exp; | |
5702 | struct block *exp_valid_block; | |
5703 | struct value *val, *mark; | |
5704 | struct frame_info *frame; | |
5705 | struct frame_info *prev_frame = NULL; | |
5706 | char *exp_start = NULL; | |
5707 | char *exp_end = NULL; | |
5708 | char *tok, *end_tok; | |
5709 | int toklen; | |
5710 | char *cond_start = NULL; | |
5711 | char *cond_end = NULL; | |
5712 | struct expression *cond = NULL; | |
5713 | int i, other_type_used, target_resources_ok = 0; | |
5714 | enum bptype bp_type; | |
5715 | int mem_cnt = 0; | |
5716 | ||
fe39c653 | 5717 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5718 | |
c906108c SS |
5719 | /* Parse arguments. */ |
5720 | innermost_block = NULL; | |
5721 | exp_start = arg; | |
5722 | exp = parse_exp_1 (&arg, 0, 0); | |
5723 | exp_end = arg; | |
5724 | exp_valid_block = innermost_block; | |
5725 | mark = value_mark (); | |
5726 | val = evaluate_expression (exp); | |
5727 | release_value (val); | |
d69fe07e | 5728 | if (value_lazy (val)) |
c906108c SS |
5729 | value_fetch_lazy (val); |
5730 | ||
5731 | tok = arg; | |
5732 | while (*tok == ' ' || *tok == '\t') | |
5733 | tok++; | |
5734 | end_tok = tok; | |
5735 | ||
5736 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5737 | end_tok++; | |
5738 | ||
5739 | toklen = end_tok - tok; | |
5740 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5741 | { | |
5742 | tok = cond_start = end_tok + 1; | |
5743 | cond = parse_exp_1 (&tok, 0, 0); | |
5744 | cond_end = tok; | |
5745 | } | |
5746 | if (*tok) | |
8a3fe4f8 | 5747 | error (_("Junk at end of command.")); |
c906108c | 5748 | |
53a5351d | 5749 | if (accessflag == hw_read) |
c5aa993b | 5750 | bp_type = bp_read_watchpoint; |
53a5351d | 5751 | else if (accessflag == hw_access) |
c5aa993b JM |
5752 | bp_type = bp_access_watchpoint; |
5753 | else | |
5754 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5755 | |
5756 | mem_cnt = can_use_hardware_watchpoint (val); | |
5757 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5758 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5759 | if (mem_cnt != 0) |
5760 | { | |
5761 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5762 | target_resources_ok = |
5763 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5764 | other_type_used); | |
c5aa993b | 5765 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5766 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5767 | |
c5aa993b | 5768 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5769 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5770 | } |
c906108c SS |
5771 | |
5772 | #if defined(HPUXHPPA) | |
c5aa993b | 5773 | /* On HP-UX if you set a h/w |
c906108c SS |
5774 | watchpoint before the "run" command, the inferior dies with a e.g., |
5775 | SIGILL once you start it. I initially believed this was due to a | |
5776 | bad interaction between page protection traps and the initial | |
5777 | startup sequence by the dynamic linker. | |
5778 | ||
5779 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5780 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5781 | yet, which forced slow watches before a "run" or "attach", and it |
5782 | still fails somewhere in the startup code. | |
5783 | ||
5784 | Until I figure out what's happening, I'm disallowing watches altogether | |
5785 | before the "run" or "attach" command. We'll tell the user they must | |
5786 | set watches after getting the program started. */ | |
c5aa993b | 5787 | if (!target_has_execution) |
c906108c | 5788 | { |
8a3fe4f8 | 5789 | warning (_("can't do that without a running program; try \"break main\"), \"run\" first"); |
c906108c SS |
5790 | return; |
5791 | } | |
5792 | #endif /* HPUXHPPA */ | |
c5aa993b | 5793 | |
4d28f7a8 KB |
5794 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5795 | watchpoint could not be set. */ | |
5796 | if (!mem_cnt || target_resources_ok <= 0) | |
5797 | bp_type = bp_watchpoint; | |
5798 | ||
c906108c | 5799 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5800 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5801 | set_breakpoint_count (breakpoint_count + 1); |
5802 | b->number = breakpoint_count; | |
b5de0fa7 | 5803 | b->disposition = disp_donttouch; |
c906108c SS |
5804 | b->exp = exp; |
5805 | b->exp_valid_block = exp_valid_block; | |
5806 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5807 | b->val = val; | |
5808 | b->cond = cond; | |
5809 | if (cond_start) | |
5810 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5811 | else | |
5812 | b->cond_string = 0; | |
c5aa993b | 5813 | |
c906108c SS |
5814 | frame = block_innermost_frame (exp_valid_block); |
5815 | if (frame) | |
5816 | { | |
5817 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5818 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5819 | } |
5820 | else | |
101dcfbe AC |
5821 | { |
5822 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5823 | } | |
c906108c | 5824 | |
c906108c SS |
5825 | /* If the expression is "local", then set up a "watchpoint scope" |
5826 | breakpoint at the point where we've left the scope of the watchpoint | |
5827 | expression. */ | |
5828 | if (innermost_block) | |
5829 | { | |
5830 | if (prev_frame) | |
5831 | { | |
5832 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5833 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5834 | bp_watchpoint_scope); | |
c906108c | 5835 | |
b5de0fa7 | 5836 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5837 | |
5838 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5839 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5840 | |
5841 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5842 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5843 | |
5844 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5845 | scope_breakpoint->loc->requested_address |
5846 | = get_frame_pc (prev_frame); | |
5847 | scope_breakpoint->loc->address | |
88f7da05 KB |
5848 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5849 | scope_breakpoint->type); | |
c906108c SS |
5850 | |
5851 | /* The scope breakpoint is related to the watchpoint. We | |
5852 | will need to act on them together. */ | |
5853 | b->related_breakpoint = scope_breakpoint; | |
5854 | } | |
5855 | } | |
5856 | value_free_to_mark (mark); | |
5857 | mention (b); | |
5858 | } | |
5859 | ||
5860 | /* Return count of locations need to be watched and can be handled | |
5861 | in hardware. If the watchpoint can not be handled | |
5862 | in hardware return zero. */ | |
5863 | ||
c906108c | 5864 | static int |
fba45db2 | 5865 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5866 | { |
5867 | int found_memory_cnt = 0; | |
2e70b7b9 | 5868 | struct value *head = v; |
c906108c SS |
5869 | |
5870 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5871 | if (!can_use_hw_watchpoints) |
c906108c | 5872 | return 0; |
c5aa993b | 5873 | |
5c44784c JM |
5874 | /* Make sure that the value of the expression depends only upon |
5875 | memory contents, and values computed from them within GDB. If we | |
5876 | find any register references or function calls, we can't use a | |
5877 | hardware watchpoint. | |
5878 | ||
5879 | The idea here is that evaluating an expression generates a series | |
5880 | of values, one holding the value of every subexpression. (The | |
5881 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5882 | a*b+c.) GDB's values hold almost enough information to establish | |
5883 | the criteria given above --- they identify memory lvalues, | |
5884 | register lvalues, computed values, etcetera. So we can evaluate | |
5885 | the expression, and then scan the chain of values that leaves | |
5886 | behind to decide whether we can detect any possible change to the | |
5887 | expression's final value using only hardware watchpoints. | |
5888 | ||
5889 | However, I don't think that the values returned by inferior | |
5890 | function calls are special in any way. So this function may not | |
5891 | notice that an expression involving an inferior function call | |
5892 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 5893 | for (; v; v = value_next (v)) |
c906108c | 5894 | { |
5c44784c | 5895 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5896 | { |
d69fe07e | 5897 | if (value_lazy (v)) |
5c44784c JM |
5898 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
5899 | we either just used its address (e.g., `a' in `a.b') or | |
5900 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5901 | ; | |
53a5351d | 5902 | else |
5c44784c JM |
5903 | { |
5904 | /* Ahh, memory we actually used! Check if we can cover | |
5905 | it with hardware watchpoints. */ | |
df407dfe | 5906 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5907 | |
5908 | /* We only watch structs and arrays if user asked for it | |
5909 | explicitly, never if they just happen to appear in a | |
5910 | middle of some value chain. */ | |
5911 | if (v == head | |
5912 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5913 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5914 | { | |
df407dfe AC |
5915 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5916 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5917 | |
5918 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5919 | return 0; | |
5920 | else | |
5921 | found_memory_cnt++; | |
5922 | } | |
5c44784c | 5923 | } |
c5aa993b | 5924 | } |
5086187c AC |
5925 | else if (VALUE_LVAL (v) != not_lval |
5926 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 5927 | return 0; /* ??? What does this represent? */ |
5086187c | 5928 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 5929 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
5930 | } |
5931 | ||
5932 | /* The expression itself looks suitable for using a hardware | |
5933 | watchpoint, but give the target machine a chance to reject it. */ | |
5934 | return found_memory_cnt; | |
5935 | } | |
5936 | ||
8b93c638 | 5937 | void |
fba45db2 | 5938 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5939 | { |
5940 | watch_command (arg, from_tty); | |
5941 | } | |
8926118c | 5942 | |
c5aa993b | 5943 | static void |
fba45db2 | 5944 | watch_command (char *arg, int from_tty) |
c906108c | 5945 | { |
53a5351d | 5946 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5947 | } |
5948 | ||
8b93c638 | 5949 | void |
fba45db2 | 5950 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5951 | { |
5952 | rwatch_command (arg, from_tty); | |
5953 | } | |
8926118c | 5954 | |
c5aa993b | 5955 | static void |
fba45db2 | 5956 | rwatch_command (char *arg, int from_tty) |
c906108c | 5957 | { |
53a5351d | 5958 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5959 | } |
5960 | ||
8b93c638 | 5961 | void |
fba45db2 | 5962 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5963 | { |
5964 | awatch_command (arg, from_tty); | |
5965 | } | |
8926118c | 5966 | |
c5aa993b | 5967 | static void |
fba45db2 | 5968 | awatch_command (char *arg, int from_tty) |
c906108c | 5969 | { |
53a5351d | 5970 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5971 | } |
c906108c | 5972 | \f |
c5aa993b | 5973 | |
43ff13b4 | 5974 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5975 | because it uses the mechanisms of breakpoints. */ |
5976 | ||
43ff13b4 JM |
5977 | /* This function is called by fetch_inferior_event via the |
5978 | cmd_continuation pointer, to complete the until command. It takes | |
5979 | care of cleaning up the temporary breakpoints set up by the until | |
5980 | command. */ | |
c2c6d25f JM |
5981 | static void |
5982 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5983 | { |
0d06e24b JM |
5984 | struct cleanup *cleanups; |
5985 | ||
57e687d9 | 5986 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5987 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5988 | } |
5989 | ||
c906108c | 5990 | void |
ae66c1fc | 5991 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
5992 | { |
5993 | struct symtabs_and_lines sals; | |
5994 | struct symtab_and_line sal; | |
206415a3 DJ |
5995 | struct frame_info *frame = get_selected_frame (NULL); |
5996 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c SS |
5997 | struct breakpoint *breakpoint; |
5998 | struct cleanup *old_chain; | |
0d06e24b JM |
5999 | struct continuation_arg *arg1; |
6000 | ||
c906108c SS |
6001 | |
6002 | clear_proceed_status (); | |
6003 | ||
6004 | /* Set a breakpoint where the user wants it and at return from | |
6005 | this function */ | |
c5aa993b | 6006 | |
c906108c SS |
6007 | if (default_breakpoint_valid) |
6008 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6009 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6010 | else |
53a5351d | 6011 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6012 | 0, (char ***) NULL, NULL); |
c5aa993b | 6013 | |
c906108c | 6014 | if (sals.nelts != 1) |
8a3fe4f8 | 6015 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6016 | |
c906108c | 6017 | sal = sals.sals[0]; |
b8c9b27d | 6018 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6019 | |
c906108c | 6020 | if (*arg) |
8a3fe4f8 | 6021 | error (_("Junk at end of arguments.")); |
c5aa993b | 6022 | |
c906108c | 6023 | resolve_sal_pc (&sal); |
c5aa993b | 6024 | |
ae66c1fc EZ |
6025 | if (anywhere) |
6026 | /* If the user told us to continue until a specified location, | |
6027 | we don't specify a frame at which we need to stop. */ | |
6028 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6029 | else | |
6030 | /* Otherwise, specify the current frame, because we want to stop only | |
6031 | at the very same frame. */ | |
206415a3 | 6032 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6033 | bp_until); |
c5aa993b | 6034 | |
362646f5 | 6035 | if (!target_can_async_p ()) |
4d6140d9 | 6036 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6037 | else |
4d6140d9 | 6038 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6039 | |
6040 | /* If we are running asynchronously, and the target supports async | |
6041 | execution, we are not waiting for the target to stop, in the call | |
6042 | tp proceed, below. This means that we cannot delete the | |
6043 | brekpoints until the target has actually stopped. The only place | |
6044 | where we get a chance to do that is in fetch_inferior_event, so | |
6045 | we must set things up for that. */ | |
6046 | ||
362646f5 | 6047 | if (target_can_async_p ()) |
43ff13b4 | 6048 | { |
0d06e24b JM |
6049 | /* In this case the arg for the continuation is just the point |
6050 | in the exec_cleanups chain from where to start doing | |
6051 | cleanups, because all the continuation does is the cleanups in | |
6052 | the exec_cleanup_chain. */ | |
6053 | arg1 = | |
6054 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6055 | arg1->next = NULL; |
6056 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6057 | |
6058 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6059 | } |
c906108c | 6060 | |
ae66c1fc EZ |
6061 | /* Keep within the current frame, or in frames called by the current |
6062 | one. */ | |
c906108c SS |
6063 | if (prev_frame) |
6064 | { | |
30f7db39 AC |
6065 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6066 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6067 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6068 | bp_until); | |
362646f5 | 6069 | if (!target_can_async_p ()) |
4d6140d9 | 6070 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6071 | else |
4d6140d9 | 6072 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6073 | } |
c5aa993b | 6074 | |
c906108c | 6075 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6076 | /* Do the cleanups now, anly if we are not running asynchronously, |
6077 | of if we are, but the target is still synchronous. */ | |
362646f5 | 6078 | if (!target_can_async_p ()) |
c5aa993b | 6079 | do_cleanups (old_chain); |
c906108c | 6080 | } |
ae66c1fc | 6081 | |
c906108c | 6082 | static void |
fba45db2 | 6083 | ep_skip_leading_whitespace (char **s) |
c906108c | 6084 | { |
c5aa993b JM |
6085 | if ((s == NULL) || (*s == NULL)) |
6086 | return; | |
6087 | while (isspace (**s)) | |
6088 | *s += 1; | |
c906108c | 6089 | } |
c5aa993b | 6090 | |
c906108c SS |
6091 | /* This function examines a string, and attempts to find a token |
6092 | that might be an event name in the leading characters. If a | |
6093 | possible match is found, a pointer to the last character of | |
6094 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6095 | |
c906108c | 6096 | static char * |
fba45db2 | 6097 | ep_find_event_name_end (char *arg) |
c906108c | 6098 | { |
c5aa993b JM |
6099 | char *s = arg; |
6100 | char *event_name_end = NULL; | |
6101 | ||
c906108c SS |
6102 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6103 | if (arg == NULL) | |
6104 | return NULL; | |
c5aa993b | 6105 | |
c906108c | 6106 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6107 | Basically, we're looking for alphanumerics and underscores; |
6108 | anything else delimites the token. */ | |
c906108c SS |
6109 | while (*s != '\0') |
6110 | { | |
c5aa993b JM |
6111 | if (!isalnum (*s) && (*s != '_')) |
6112 | break; | |
c906108c SS |
6113 | event_name_end = s; |
6114 | s++; | |
6115 | } | |
c5aa993b | 6116 | |
c906108c SS |
6117 | return event_name_end; |
6118 | } | |
6119 | ||
c5aa993b | 6120 | |
c906108c SS |
6121 | /* This function attempts to parse an optional "if <cond>" clause |
6122 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6123 | |
c906108c SS |
6124 | Else, it returns a pointer to the condition string. (It does not |
6125 | attempt to evaluate the string against a particular block.) And, | |
6126 | it updates arg to point to the first character following the parsed | |
6127 | if clause in the arg string. */ | |
53a5351d | 6128 | |
c906108c | 6129 | static char * |
fba45db2 | 6130 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6131 | { |
c5aa993b JM |
6132 | char *cond_string; |
6133 | ||
6134 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6135 | return NULL; |
c5aa993b | 6136 | |
c906108c SS |
6137 | /* Skip the "if" keyword. */ |
6138 | (*arg) += 2; | |
c5aa993b | 6139 | |
c906108c SS |
6140 | /* Skip any extra leading whitespace, and record the start of the |
6141 | condition string. */ | |
6142 | ep_skip_leading_whitespace (arg); | |
6143 | cond_string = *arg; | |
c5aa993b | 6144 | |
c906108c SS |
6145 | /* Assume that the condition occupies the remainder of the arg string. */ |
6146 | (*arg) += strlen (cond_string); | |
c5aa993b | 6147 | |
c906108c SS |
6148 | return cond_string; |
6149 | } | |
c5aa993b | 6150 | |
c906108c SS |
6151 | /* This function attempts to parse an optional filename from the arg |
6152 | string. If one is not found, it returns NULL. | |
c5aa993b | 6153 | |
c906108c SS |
6154 | Else, it returns a pointer to the parsed filename. (This function |
6155 | makes no attempt to verify that a file of that name exists, or is | |
6156 | accessible.) And, it updates arg to point to the first character | |
6157 | following the parsed filename in the arg string. | |
c5aa993b | 6158 | |
c906108c SS |
6159 | Note that clients needing to preserve the returned filename for |
6160 | future access should copy it to their own buffers. */ | |
6161 | static char * | |
fba45db2 | 6162 | ep_parse_optional_filename (char **arg) |
c906108c | 6163 | { |
c5aa993b JM |
6164 | static char filename[1024]; |
6165 | char *arg_p = *arg; | |
6166 | int i; | |
6167 | char c; | |
6168 | ||
c906108c SS |
6169 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6170 | return NULL; | |
c5aa993b JM |
6171 | |
6172 | for (i = 0;; i++) | |
c906108c SS |
6173 | { |
6174 | c = *arg_p; | |
6175 | if (isspace (c)) | |
c5aa993b | 6176 | c = '\0'; |
c906108c SS |
6177 | filename[i] = c; |
6178 | if (c == '\0') | |
c5aa993b | 6179 | break; |
c906108c SS |
6180 | arg_p++; |
6181 | } | |
6182 | *arg = arg_p; | |
c5aa993b | 6183 | |
c906108c SS |
6184 | return filename; |
6185 | } | |
c5aa993b | 6186 | |
c906108c SS |
6187 | /* Commands to deal with catching events, such as signals, exceptions, |
6188 | process start/exit, etc. */ | |
c5aa993b JM |
6189 | |
6190 | typedef enum | |
6191 | { | |
6192 | catch_fork, catch_vfork | |
6193 | } | |
6194 | catch_fork_kind; | |
6195 | ||
c906108c | 6196 | static void |
fba45db2 KB |
6197 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6198 | int from_tty) | |
c906108c | 6199 | { |
c5aa993b JM |
6200 | char *cond_string = NULL; |
6201 | ||
c906108c | 6202 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6203 | |
c906108c | 6204 | /* The allowed syntax is: |
c5aa993b JM |
6205 | catch [v]fork |
6206 | catch [v]fork if <cond> | |
6207 | ||
c906108c SS |
6208 | First, check if there's an if clause. */ |
6209 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6210 | |
c906108c | 6211 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6212 | error (_("Junk at end of arguments.")); |
c5aa993b | 6213 | |
c906108c SS |
6214 | /* If this target supports it, create a fork or vfork catchpoint |
6215 | and enable reporting of such events. */ | |
c5aa993b JM |
6216 | switch (fork_kind) |
6217 | { | |
6218 | case catch_fork: | |
c906108c SS |
6219 | create_fork_event_catchpoint (tempflag, cond_string); |
6220 | break; | |
c5aa993b | 6221 | case catch_vfork: |
c906108c SS |
6222 | create_vfork_event_catchpoint (tempflag, cond_string); |
6223 | break; | |
c5aa993b | 6224 | default: |
8a3fe4f8 | 6225 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6226 | break; |
c5aa993b | 6227 | } |
c906108c SS |
6228 | } |
6229 | ||
6230 | static void | |
fba45db2 | 6231 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6232 | { |
c5aa993b | 6233 | char *cond_string = NULL; |
c906108c SS |
6234 | |
6235 | ep_skip_leading_whitespace (&arg); | |
6236 | ||
6237 | /* The allowed syntax is: | |
c5aa993b JM |
6238 | catch exec |
6239 | catch exec if <cond> | |
c906108c SS |
6240 | |
6241 | First, check if there's an if clause. */ | |
6242 | cond_string = ep_parse_optional_if_clause (&arg); | |
6243 | ||
6244 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6245 | error (_("Junk at end of arguments.")); |
c906108c SS |
6246 | |
6247 | /* If this target supports it, create an exec catchpoint | |
6248 | and enable reporting of such events. */ | |
6249 | create_exec_event_catchpoint (tempflag, cond_string); | |
6250 | } | |
c5aa993b | 6251 | |
c906108c | 6252 | static void |
fba45db2 | 6253 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6254 | { |
c5aa993b JM |
6255 | char *dll_pathname = NULL; |
6256 | char *cond_string = NULL; | |
6257 | ||
c906108c | 6258 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6259 | |
c906108c | 6260 | /* The allowed syntax is: |
c5aa993b JM |
6261 | catch load |
6262 | catch load if <cond> | |
6263 | catch load <filename> | |
6264 | catch load <filename> if <cond> | |
6265 | ||
c906108c SS |
6266 | The user is not allowed to specify the <filename> after an |
6267 | if clause. | |
c5aa993b | 6268 | |
c906108c | 6269 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6270 | |
c906108c SS |
6271 | First, check if there's an if clause. If so, then there |
6272 | cannot be a filename. */ | |
6273 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6274 | |
c906108c SS |
6275 | /* If there was an if clause, then there cannot be a filename. |
6276 | Else, there might be a filename and an if clause. */ | |
6277 | if (cond_string == NULL) | |
6278 | { | |
6279 | dll_pathname = ep_parse_optional_filename (&arg); | |
6280 | ep_skip_leading_whitespace (&arg); | |
6281 | cond_string = ep_parse_optional_if_clause (&arg); | |
6282 | } | |
c5aa993b | 6283 | |
c906108c | 6284 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6285 | error (_("Junk at end of arguments.")); |
c5aa993b | 6286 | |
c906108c SS |
6287 | /* Create a load breakpoint that only triggers when a load of |
6288 | the specified dll (or any dll, if no pathname was specified) | |
6289 | occurs. */ | |
39f77062 | 6290 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6291 | dll_pathname, cond_string); |
c906108c | 6292 | } |
c5aa993b | 6293 | |
c906108c | 6294 | static void |
fba45db2 | 6295 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6296 | { |
c5aa993b JM |
6297 | char *dll_pathname = NULL; |
6298 | char *cond_string = NULL; | |
6299 | ||
c906108c | 6300 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6301 | |
c906108c | 6302 | /* The allowed syntax is: |
c5aa993b JM |
6303 | catch unload |
6304 | catch unload if <cond> | |
6305 | catch unload <filename> | |
6306 | catch unload <filename> if <cond> | |
6307 | ||
c906108c SS |
6308 | The user is not allowed to specify the <filename> after an |
6309 | if clause. | |
c5aa993b | 6310 | |
c906108c | 6311 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6312 | |
c906108c SS |
6313 | First, check if there's an if clause. If so, then there |
6314 | cannot be a filename. */ | |
6315 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6316 | |
c906108c SS |
6317 | /* If there was an if clause, then there cannot be a filename. |
6318 | Else, there might be a filename and an if clause. */ | |
6319 | if (cond_string == NULL) | |
6320 | { | |
6321 | dll_pathname = ep_parse_optional_filename (&arg); | |
6322 | ep_skip_leading_whitespace (&arg); | |
6323 | cond_string = ep_parse_optional_if_clause (&arg); | |
6324 | } | |
c5aa993b | 6325 | |
c906108c | 6326 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6327 | error (_("Junk at end of arguments.")); |
c5aa993b | 6328 | |
c906108c SS |
6329 | /* Create an unload breakpoint that only triggers when an unload of |
6330 | the specified dll (or any dll, if no pathname was specified) | |
6331 | occurs. */ | |
39f77062 | 6332 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6333 | dll_pathname, cond_string); |
c906108c | 6334 | } |
c906108c SS |
6335 | |
6336 | /* Commands to deal with catching exceptions. */ | |
6337 | ||
6338 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6339 | exception event callback */ |
c906108c SS |
6340 | |
6341 | static void | |
fba45db2 KB |
6342 | create_exception_catchpoint (int tempflag, char *cond_string, |
6343 | enum exception_event_kind ex_event, | |
6344 | struct symtab_and_line *sal) | |
c906108c | 6345 | { |
c5aa993b | 6346 | struct breakpoint *b; |
c5aa993b | 6347 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6348 | enum bptype bptype; |
c906108c | 6349 | |
c5aa993b | 6350 | if (!sal) /* no exception support? */ |
c906108c SS |
6351 | return; |
6352 | ||
c906108c SS |
6353 | switch (ex_event) |
6354 | { | |
c5aa993b | 6355 | case EX_EVENT_THROW: |
4d28f7a8 | 6356 | bptype = bp_catch_throw; |
c5aa993b JM |
6357 | break; |
6358 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6359 | bptype = bp_catch_catch; |
c5aa993b JM |
6360 | break; |
6361 | default: /* error condition */ | |
8a3fe4f8 | 6362 | error (_("Internal error -- invalid catchpoint kind")); |
c906108c | 6363 | } |
4d28f7a8 KB |
6364 | |
6365 | b = set_raw_breakpoint (*sal, bptype); | |
6366 | set_breakpoint_count (breakpoint_count + 1); | |
6367 | b->number = breakpoint_count; | |
6368 | b->cond = NULL; | |
6369 | b->cond_string = (cond_string == NULL) ? | |
6370 | NULL : savestring (cond_string, strlen (cond_string)); | |
6371 | b->thread = thread; | |
6372 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6373 | b->enable_state = bp_enabled; |
6374 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6375 | mention (b); |
6376 | } | |
6377 | ||
3086aeae DJ |
6378 | static enum print_stop_action |
6379 | print_exception_catchpoint (struct breakpoint *b) | |
6380 | { | |
6381 | annotate_catchpoint (b->number); | |
6382 | ||
6383 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6384 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6385 | b->number); |
6386 | else | |
a3f17187 | 6387 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6388 | b->number); |
6389 | ||
6390 | return PRINT_SRC_AND_LOC; | |
6391 | } | |
6392 | ||
6393 | static void | |
6394 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6395 | { | |
6396 | if (addressprint) | |
6397 | { | |
6398 | annotate_field (4); | |
5cab636d | 6399 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6400 | } |
6401 | annotate_field (5); | |
5cab636d | 6402 | *last_addr = b->loc->address; |
3086aeae DJ |
6403 | if (strstr (b->addr_string, "throw") != NULL) |
6404 | ui_out_field_string (uiout, "what", "exception throw"); | |
6405 | else | |
6406 | ui_out_field_string (uiout, "what", "exception catch"); | |
6407 | } | |
6408 | ||
6409 | static void | |
6410 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6411 | { | |
6412 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6413 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6414 | else |
a3f17187 | 6415 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6416 | } |
6417 | ||
6418 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6419 | print_exception_catchpoint, | |
6420 | print_one_exception_catchpoint, | |
6421 | print_mention_exception_catchpoint | |
6422 | }; | |
6423 | ||
6424 | static int | |
6425 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6426 | enum exception_event_kind ex_event, int from_tty) | |
6427 | { | |
6428 | char *trigger_func_name, *nameptr; | |
6429 | struct symtabs_and_lines sals; | |
6430 | struct breakpoint *b; | |
6431 | ||
6432 | if (ex_event == EX_EVENT_CATCH) | |
6433 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6434 | else | |
6435 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6436 | ||
6437 | nameptr = trigger_func_name; | |
68219205 | 6438 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6439 | if (sals.nelts == 0) |
6440 | { | |
b59661bd | 6441 | xfree (trigger_func_name); |
3086aeae DJ |
6442 | return 0; |
6443 | } | |
6444 | ||
6445 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6446 | set_breakpoint_count (breakpoint_count + 1); | |
6447 | b->number = breakpoint_count; | |
6448 | b->cond = NULL; | |
6449 | b->cond_string = (cond_string == NULL) ? | |
6450 | NULL : savestring (cond_string, strlen (cond_string)); | |
6451 | b->thread = -1; | |
6452 | b->addr_string = trigger_func_name; | |
6453 | b->enable_state = bp_enabled; | |
6454 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6455 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6456 | ||
b59661bd | 6457 | xfree (sals.sals); |
3086aeae DJ |
6458 | mention (b); |
6459 | return 1; | |
6460 | } | |
6461 | ||
c5aa993b | 6462 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6463 | |
6464 | static void | |
fba45db2 KB |
6465 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6466 | int tempflag, int from_tty) | |
c906108c | 6467 | { |
c5aa993b JM |
6468 | char *cond_string = NULL; |
6469 | struct symtab_and_line *sal = NULL; | |
6470 | ||
c906108c | 6471 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6472 | |
c906108c SS |
6473 | cond_string = ep_parse_optional_if_clause (&arg); |
6474 | ||
6475 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6476 | error (_("Junk at end of arguments.")); |
c906108c SS |
6477 | |
6478 | if ((ex_event != EX_EVENT_THROW) && | |
6479 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6480 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6481 | |
3086aeae DJ |
6482 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6483 | return; | |
6484 | ||
c906108c SS |
6485 | /* See if we can find a callback routine */ |
6486 | sal = target_enable_exception_callback (ex_event, 1); | |
6487 | ||
c5aa993b | 6488 | if (sal) |
c906108c SS |
6489 | { |
6490 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6491 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6492 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6493 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6494 | else |
53a5351d | 6495 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6496 | } |
c5aa993b | 6497 | |
8a3fe4f8 | 6498 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6499 | } |
6500 | ||
f7f9143b JB |
6501 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6502 | ||
6503 | static void | |
6504 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6505 | char *addr_string, | |
6506 | char *exp_string, | |
6507 | char *cond_string, | |
6508 | struct expression *cond, | |
6509 | struct breakpoint_ops *ops, | |
6510 | int tempflag, | |
6511 | int from_tty) | |
6512 | { | |
6513 | struct breakpoint *b; | |
6514 | ||
6515 | if (from_tty) | |
6516 | { | |
6517 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6518 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6519 | version for exception catchpoints, because two catchpoints | |
6520 | used for different exception names will use the same address. | |
6521 | In this case, a "breakpoint ... also set at..." warning is | |
6522 | unproductive. Besides. the warning phrasing is also a bit | |
6523 | inapropriate, we should use the word catchpoint, and tell | |
6524 | the user what type of catchpoint it is. The above is good | |
6525 | enough for now, though. */ | |
6526 | } | |
6527 | ||
6528 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6529 | set_breakpoint_count (breakpoint_count + 1); | |
6530 | ||
6531 | b->enable_state = bp_enabled; | |
6532 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6533 | b->number = breakpoint_count; | |
6534 | b->ignore_count = 0; | |
6535 | b->cond = cond; | |
6536 | b->addr_string = addr_string; | |
6537 | b->language = language_ada; | |
6538 | b->cond_string = cond_string; | |
6539 | b->exp_string = exp_string; | |
6540 | b->thread = -1; | |
6541 | b->ops = ops; | |
6542 | b->from_tty = from_tty; | |
6543 | ||
6544 | mention (b); | |
6545 | } | |
6546 | ||
6547 | /* Implement the "catch exception" command. */ | |
6548 | ||
6549 | static void | |
6550 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6551 | { | |
6552 | struct symtab_and_line sal; | |
6553 | enum bptype type; | |
6554 | char *addr_string = NULL; | |
6555 | char *exp_string = NULL; | |
6556 | char *cond_string = NULL; | |
6557 | struct expression *cond = NULL; | |
6558 | struct breakpoint_ops *ops = NULL; | |
6559 | ||
6560 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6561 | &cond_string, &cond, &ops); | |
6562 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6563 | cond_string, cond, ops, tempflag, | |
6564 | from_tty); | |
6565 | } | |
6566 | ||
6567 | /* Implement the "catch assert" command. */ | |
6568 | ||
6569 | static void | |
6570 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6571 | { | |
6572 | struct symtab_and_line sal; | |
6573 | char *addr_string = NULL; | |
6574 | struct breakpoint_ops *ops = NULL; | |
6575 | ||
6576 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6577 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6578 | tempflag, from_tty); | |
6579 | } | |
6580 | ||
c906108c SS |
6581 | /* Cover routine to allow wrapping target_enable_exception_catchpoints |
6582 | inside a catch_errors */ | |
6583 | ||
6584 | static int | |
4efb68b1 | 6585 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6586 | { |
6587 | args_for_catchpoint_enable *args = arg; | |
6588 | struct symtab_and_line *sal; | |
b5de0fa7 | 6589 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6590 | if (sal == NULL) |
6591 | return 0; | |
6592 | else if (sal == (struct symtab_and_line *) -1) | |
6593 | return -1; | |
6594 | else | |
c5aa993b | 6595 | return 1; /*is valid */ |
c906108c SS |
6596 | } |
6597 | ||
c906108c | 6598 | static void |
fba45db2 | 6599 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6600 | { |
c5aa993b | 6601 | |
c906108c SS |
6602 | /* The first argument may be an event name, such as "start" or "load". |
6603 | If so, then handle it as such. If it doesn't match an event name, | |
6604 | then attempt to interpret it as an exception name. (This latter is | |
6605 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6606 | |
c906108c | 6607 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6608 | char *arg1_start = arg; |
6609 | char *arg1_end; | |
6610 | int arg1_length; | |
6611 | ||
c906108c SS |
6612 | if (arg1_start == NULL) |
6613 | { | |
c5aa993b | 6614 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6615 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6616 | /* return; */ | |
c5aa993b | 6617 | /* Now, this is not allowed */ |
8a3fe4f8 | 6618 | error (_("Catch requires an event name.")); |
c906108c SS |
6619 | |
6620 | } | |
6621 | arg1_end = ep_find_event_name_end (arg1_start); | |
6622 | if (arg1_end == NULL) | |
8a3fe4f8 | 6623 | error (_("catch requires an event")); |
c906108c | 6624 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6625 | |
c906108c SS |
6626 | /* Try to match what we found against known event names. */ |
6627 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6628 | { | |
8a3fe4f8 | 6629 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6630 | } |
6631 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6632 | { | |
53a5351d JM |
6633 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6634 | tempflag, from_tty); | |
c906108c SS |
6635 | } |
6636 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6637 | { | |
53a5351d JM |
6638 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6639 | tempflag, from_tty); | |
c906108c SS |
6640 | } |
6641 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6642 | { | |
8a3fe4f8 | 6643 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6644 | } |
6645 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6646 | { | |
8a3fe4f8 | 6647 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6648 | } |
6649 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6650 | { | |
8a3fe4f8 | 6651 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6652 | } |
6653 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6654 | { | |
8a3fe4f8 | 6655 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6656 | } |
6657 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6658 | { | |
8a3fe4f8 | 6659 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6660 | } |
6661 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6662 | { | |
c5aa993b | 6663 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6664 | } |
6665 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6666 | { | |
c5aa993b | 6667 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6668 | } |
6669 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6670 | { | |
c5aa993b | 6671 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6672 | } |
6673 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6674 | { | |
c5aa993b | 6675 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6676 | } |
6677 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6678 | { | |
c5aa993b | 6679 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6680 | } |
6681 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6682 | { | |
8a3fe4f8 | 6683 | error (_("Catch of stop not yet implemented")); |
c906108c | 6684 | } |
f7f9143b JB |
6685 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6686 | { | |
6687 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6688 | } | |
6689 | ||
6690 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6691 | { | |
6692 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6693 | } | |
c5aa993b | 6694 | |
c906108c SS |
6695 | /* This doesn't appear to be an event name */ |
6696 | ||
6697 | else | |
6698 | { | |
6699 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6700 | as the name of an exception */ |
c906108c | 6701 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6702 | /* Now this is not allowed */ |
8a3fe4f8 | 6703 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6704 | |
6705 | } | |
6706 | } | |
6707 | ||
6708 | /* Used by the gui, could be made a worker for other things. */ | |
6709 | ||
6710 | struct breakpoint * | |
fba45db2 | 6711 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6712 | { |
6713 | struct breakpoint *b; | |
4d28f7a8 | 6714 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6715 | set_breakpoint_count (breakpoint_count + 1); |
6716 | b->number = breakpoint_count; | |
c906108c SS |
6717 | b->cond = 0; |
6718 | b->thread = -1; | |
6719 | return b; | |
6720 | } | |
6721 | ||
c906108c | 6722 | static void |
fba45db2 | 6723 | catch_command (char *arg, int from_tty) |
c906108c SS |
6724 | { |
6725 | catch_command_1 (arg, 0, from_tty); | |
6726 | } | |
6727 | \f | |
6728 | ||
6729 | static void | |
fba45db2 | 6730 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6731 | { |
6732 | catch_command_1 (arg, 1, from_tty); | |
6733 | } | |
6734 | ||
80f8a6eb | 6735 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6736 | |
6737 | static void | |
fba45db2 | 6738 | clear_command (char *arg, int from_tty) |
c906108c | 6739 | { |
80f8a6eb | 6740 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6741 | int default_match; |
6742 | struct symtabs_and_lines sals; | |
6743 | struct symtab_and_line sal; | |
c906108c SS |
6744 | int i; |
6745 | ||
6746 | if (arg) | |
6747 | { | |
6748 | sals = decode_line_spec (arg, 1); | |
6749 | default_match = 0; | |
6750 | } | |
6751 | else | |
6752 | { | |
c5aa993b | 6753 | sals.sals = (struct symtab_and_line *) |
c906108c | 6754 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6755 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6756 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6757 | sal.line = default_breakpoint_line; |
6758 | sal.symtab = default_breakpoint_symtab; | |
6759 | sal.pc = default_breakpoint_address; | |
6760 | if (sal.symtab == 0) | |
8a3fe4f8 | 6761 | error (_("No source file specified.")); |
c906108c SS |
6762 | |
6763 | sals.sals[0] = sal; | |
6764 | sals.nelts = 1; | |
6765 | ||
6766 | default_match = 1; | |
6767 | } | |
6768 | ||
6769 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6770 | to it. Do it in two passes, solely to preserve the current |
6771 | behavior that from_tty is forced true if we delete more than | |
6772 | one breakpoint. */ | |
c906108c | 6773 | |
80f8a6eb | 6774 | found = NULL; |
c906108c SS |
6775 | for (i = 0; i < sals.nelts; i++) |
6776 | { | |
6777 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6778 | If line given (pc == 0), clear all bpts on specified line. |
6779 | If defaulting, clear all bpts on default line | |
c906108c | 6780 | or at default pc. |
c5aa993b JM |
6781 | |
6782 | defaulting sal.pc != 0 tests to do | |
6783 | ||
6784 | 0 1 pc | |
6785 | 1 1 pc _and_ line | |
6786 | 0 0 line | |
6787 | 1 0 <can't happen> */ | |
c906108c SS |
6788 | |
6789 | sal = sals.sals[i]; | |
80f8a6eb | 6790 | prev = NULL; |
c906108c | 6791 | |
80f8a6eb MS |
6792 | /* Find all matching breakpoints, remove them from the |
6793 | breakpoint chain, and add them to the 'found' chain. */ | |
6794 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6795 | { |
80f8a6eb MS |
6796 | /* Are we going to delete b? */ |
6797 | if (b->type != bp_none | |
6798 | && b->type != bp_watchpoint | |
6799 | && b->type != bp_hardware_watchpoint | |
6800 | && b->type != bp_read_watchpoint | |
6801 | && b->type != bp_access_watchpoint | |
6802 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6803 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6804 | && (!section_is_overlay (b->loc->section) |
6805 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6806 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6807 | || ((default_match || (0 == sal.pc)) | |
6808 | && b->source_file != NULL | |
6809 | && sal.symtab != NULL | |
6314a349 | 6810 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6811 | && b->line_number == sal.line))) |
6812 | /* Yes, if sal source file and line matches b. */ | |
6813 | { | |
6814 | /* Remove it from breakpoint_chain... */ | |
6815 | if (b == breakpoint_chain) | |
6816 | { | |
6817 | /* b is at the head of the list */ | |
6818 | breakpoint_chain = b->next; | |
6819 | } | |
6820 | else | |
6821 | { | |
6822 | prev->next = b->next; | |
6823 | } | |
6824 | /* And add it to 'found' chain. */ | |
6825 | b->next = found; | |
6826 | found = b; | |
6827 | } | |
c906108c | 6828 | else |
80f8a6eb MS |
6829 | { |
6830 | /* Keep b, and keep a pointer to it. */ | |
6831 | prev = b; | |
6832 | } | |
c906108c | 6833 | } |
80f8a6eb MS |
6834 | } |
6835 | /* Now go thru the 'found' chain and delete them. */ | |
6836 | if (found == 0) | |
6837 | { | |
6838 | if (arg) | |
8a3fe4f8 | 6839 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6840 | else |
8a3fe4f8 | 6841 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6842 | } |
c906108c | 6843 | |
80f8a6eb MS |
6844 | if (found->next) |
6845 | from_tty = 1; /* Always report if deleted more than one */ | |
6846 | if (from_tty) | |
a3f17187 AC |
6847 | { |
6848 | if (!found->next) | |
6849 | printf_unfiltered (_("Deleted breakpoint ")); | |
6850 | else | |
6851 | printf_unfiltered (_("Deleted breakpoints ")); | |
6852 | } | |
80f8a6eb MS |
6853 | breakpoints_changed (); |
6854 | while (found) | |
6855 | { | |
c5aa993b | 6856 | if (from_tty) |
80f8a6eb MS |
6857 | printf_unfiltered ("%d ", found->number); |
6858 | tmp = found->next; | |
6859 | delete_breakpoint (found); | |
6860 | found = tmp; | |
c906108c | 6861 | } |
80f8a6eb MS |
6862 | if (from_tty) |
6863 | putchar_unfiltered ('\n'); | |
c906108c SS |
6864 | } |
6865 | \f | |
6866 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6867 | all breakpoints that are marked for deletion, whether hit or not. | |
6868 | This is called after any breakpoint is hit, or after errors. */ | |
6869 | ||
6870 | void | |
fba45db2 | 6871 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6872 | { |
6873 | struct breakpoint *b, *temp; | |
6874 | ||
6875 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6876 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6877 | && bs->stop) |
6878 | delete_breakpoint (bs->breakpoint_at); | |
6879 | ||
6880 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6881 | { |
b5de0fa7 | 6882 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6883 | delete_breakpoint (b); |
6884 | } | |
c906108c SS |
6885 | } |
6886 | ||
53a5351d JM |
6887 | /* Delete a breakpoint and clean up all traces of it in the data |
6888 | structures. */ | |
c906108c SS |
6889 | |
6890 | void | |
fba45db2 | 6891 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6892 | { |
52f0bd74 AC |
6893 | struct breakpoint *b; |
6894 | bpstat bs; | |
7cc221ef | 6895 | struct bp_location *loc; |
c906108c | 6896 | |
8a3fe4f8 | 6897 | gdb_assert (bpt != NULL); |
c906108c SS |
6898 | |
6899 | /* Has this bp already been deleted? This can happen because multiple | |
6900 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6901 | ||
6902 | One example of this happening is a watchpoint's scope bp. When the | |
6903 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6904 | delete it. We also delete its scope bp. But the scope bp is marked | |
6905 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6906 | checked for auto-deleting bp's, which are deleted. | |
6907 | ||
6908 | A real solution to this problem might involve reference counts in bp's, | |
6909 | and/or giving them pointers back to their referencing bpstat's, and | |
6910 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 6911 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
6912 | if (bpt->type == bp_none) |
6913 | return; | |
6914 | ||
9a4105ab AC |
6915 | if (deprecated_delete_breakpoint_hook) |
6916 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6917 | breakpoint_delete_event (bpt->number); |
c906108c | 6918 | |
5cab636d | 6919 | if (bpt->loc->inserted) |
0bde7532 | 6920 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6921 | |
7270d8f2 OF |
6922 | free_valchain (bpt->loc); |
6923 | ||
c906108c SS |
6924 | if (breakpoint_chain == bpt) |
6925 | breakpoint_chain = bpt->next; | |
6926 | ||
7cc221ef DJ |
6927 | if (bp_location_chain == bpt->loc) |
6928 | bp_location_chain = bpt->loc->next; | |
6929 | ||
c906108c SS |
6930 | /* If we have callback-style exception catchpoints, don't go through |
6931 | the adjustments to the C++ runtime library etc. if the inferior | |
6932 | isn't actually running. target_enable_exception_callback for a | |
6933 | null target ops vector gives an undesirable error message, so we | |
6934 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
1272ad14 | 6935 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6936 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6937 | { | |
53a5351d | 6938 | /* Format possible error msg */ |
9ebf4acf AC |
6939 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6940 | bpt->number); | |
6941 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
6942 | args_for_catchpoint_enable args; | |
53a5351d JM |
6943 | args.kind = bpt->type == bp_catch_catch ? |
6944 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 6945 | args.enable_p = 0; |
c906108c SS |
6946 | catch_errors (cover_target_enable_exception_callback, &args, |
6947 | message, RETURN_MASK_ALL); | |
9ebf4acf | 6948 | do_cleanups (cleanups); |
c906108c SS |
6949 | } |
6950 | ||
6951 | ||
6952 | ALL_BREAKPOINTS (b) | |
6953 | if (b->next == bpt) | |
c5aa993b JM |
6954 | { |
6955 | b->next = bpt->next; | |
6956 | break; | |
6957 | } | |
c906108c | 6958 | |
7cc221ef DJ |
6959 | ALL_BP_LOCATIONS (loc) |
6960 | if (loc->next == bpt->loc) | |
6961 | { | |
6962 | loc->next = bpt->loc->next; | |
6963 | break; | |
6964 | } | |
6965 | ||
9f60f21b | 6966 | check_duplicates (bpt); |
c906108c SS |
6967 | /* If this breakpoint was inserted, and there is another breakpoint |
6968 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 6969 | if (bpt->loc->inserted |
c906108c SS |
6970 | && bpt->type != bp_hardware_watchpoint |
6971 | && bpt->type != bp_read_watchpoint | |
6972 | && bpt->type != bp_access_watchpoint | |
6973 | && bpt->type != bp_catch_fork | |
6974 | && bpt->type != bp_catch_vfork | |
6975 | && bpt->type != bp_catch_exec) | |
6976 | { | |
6977 | ALL_BREAKPOINTS (b) | |
5cab636d | 6978 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 6979 | && b->loc->section == bpt->loc->section |
5cab636d | 6980 | && !b->loc->duplicate |
b5de0fa7 EZ |
6981 | && b->enable_state != bp_disabled |
6982 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 6983 | && !b->pending |
b5de0fa7 | 6984 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
6985 | { |
6986 | int val; | |
53a5351d | 6987 | |
c2c6d25f JM |
6988 | /* We should never reach this point if there is a permanent |
6989 | breakpoint at the same address as the one being deleted. | |
6990 | If there is a permanent breakpoint somewhere, it should | |
6991 | always be the only one inserted. */ | |
b5de0fa7 | 6992 | if (b->enable_state == bp_permanent) |
8e65ff28 | 6993 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
6994 | _("another breakpoint was inserted on top of " |
6995 | "a permanent breakpoint")); | |
c2c6d25f | 6996 | |
8181d85f DJ |
6997 | memset (&b->loc->target_info, 0, sizeof (b->loc->target_info)); |
6998 | b->loc->target_info.placed_address = b->loc->address; | |
53a5351d | 6999 | if (b->type == bp_hardware_breakpoint) |
8181d85f | 7000 | val = target_insert_hw_breakpoint (&b->loc->target_info); |
53a5351d | 7001 | else |
8181d85f | 7002 | val = target_insert_breakpoint (&b->loc->target_info); |
53a5351d | 7003 | |
81d0cc19 | 7004 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
7005 | if (val != 0) |
7006 | { | |
81d0cc19 GS |
7007 | struct ui_file *tmp_error_stream = mem_fileopen (); |
7008 | make_cleanup_ui_file_delete (tmp_error_stream); | |
7009 | ||
7010 | ||
7011 | if (b->type == bp_hardware_breakpoint) | |
7012 | { | |
7013 | fprintf_unfiltered (tmp_error_stream, | |
7014 | "Cannot insert hardware breakpoint %d.\n" | |
7015 | "You may have requested too many hardware breakpoints.\n", | |
7016 | b->number); | |
7017 | } | |
7018 | else | |
7019 | { | |
7020 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
7021 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
66bf4b3a | 7022 | deprecated_print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
7023 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
7024 | safe_strerror (val)); | |
7025 | } | |
7026 | ||
7027 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 7028 | target_terminal_ours_for_output (); |
81d0cc19 | 7029 | error_stream(tmp_error_stream); |
c5aa993b JM |
7030 | } |
7031 | else | |
5cab636d | 7032 | b->loc->inserted = 1; |
c5aa993b | 7033 | } |
c906108c SS |
7034 | } |
7035 | ||
7036 | free_command_lines (&bpt->commands); | |
7037 | if (bpt->cond) | |
b8c9b27d | 7038 | xfree (bpt->cond); |
c906108c | 7039 | if (bpt->cond_string != NULL) |
b8c9b27d | 7040 | xfree (bpt->cond_string); |
c906108c | 7041 | if (bpt->addr_string != NULL) |
b8c9b27d | 7042 | xfree (bpt->addr_string); |
c906108c | 7043 | if (bpt->exp != NULL) |
b8c9b27d | 7044 | xfree (bpt->exp); |
c906108c | 7045 | if (bpt->exp_string != NULL) |
b8c9b27d | 7046 | xfree (bpt->exp_string); |
c906108c SS |
7047 | if (bpt->val != NULL) |
7048 | value_free (bpt->val); | |
7049 | if (bpt->source_file != NULL) | |
b8c9b27d | 7050 | xfree (bpt->source_file); |
c906108c | 7051 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7052 | xfree (bpt->dll_pathname); |
c906108c | 7053 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7054 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7055 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7056 | xfree (bpt->exec_pathname); |
c906108c SS |
7057 | |
7058 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7059 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7060 | We just check stop_bpstat for now. Note that we cannot just |
7061 | remove bpstats pointing at bpt from the stop_bpstat list | |
7062 | entirely, as breakpoint commands are associated with the bpstat; | |
7063 | if we remove it here, then the later call to | |
7064 | bpstat_do_actions (&stop_bpstat); | |
7065 | in event-top.c won't do anything, and temporary breakpoints | |
7066 | with commands won't work. */ | |
c906108c SS |
7067 | for (bs = stop_bpstat; bs; bs = bs->next) |
7068 | if (bs->breakpoint_at == bpt) | |
7069 | { | |
7070 | bs->breakpoint_at = NULL; | |
c906108c | 7071 | bs->old_val = NULL; |
c2b8ed2c | 7072 | /* bs->commands will be freed later. */ |
c906108c SS |
7073 | } |
7074 | /* On the chance that someone will soon try again to delete this same | |
7075 | bp, we mark it as deleted before freeing its storage. */ | |
7076 | bpt->type = bp_none; | |
7077 | ||
5cab636d | 7078 | xfree (bpt->loc); |
b8c9b27d | 7079 | xfree (bpt); |
c906108c SS |
7080 | } |
7081 | ||
4d6140d9 AC |
7082 | static void |
7083 | do_delete_breakpoint_cleanup (void *b) | |
7084 | { | |
7085 | delete_breakpoint (b); | |
7086 | } | |
7087 | ||
7088 | struct cleanup * | |
7089 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7090 | { | |
7091 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7092 | } | |
7093 | ||
7094 | struct cleanup * | |
7095 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7096 | { | |
7097 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7098 | } | |
7099 | ||
c906108c | 7100 | void |
fba45db2 | 7101 | delete_command (char *arg, int from_tty) |
c906108c SS |
7102 | { |
7103 | struct breakpoint *b, *temp; | |
7104 | ||
ea9365bb TT |
7105 | dont_repeat (); |
7106 | ||
c906108c SS |
7107 | if (arg == 0) |
7108 | { | |
7109 | int breaks_to_delete = 0; | |
7110 | ||
7111 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7112 | Do not delete internal or call-dummy breakpoints, these |
7113 | have to be deleted with an explicit breakpoint number argument. */ | |
7114 | ALL_BREAKPOINTS (b) | |
7115 | { | |
7116 | if (b->type != bp_call_dummy && | |
7117 | b->type != bp_shlib_event && | |
c4093a6a | 7118 | b->type != bp_thread_event && |
1900040c | 7119 | b->type != bp_overlay_event && |
c5aa993b | 7120 | b->number >= 0) |
973d738b DJ |
7121 | { |
7122 | breaks_to_delete = 1; | |
7123 | break; | |
7124 | } | |
c5aa993b | 7125 | } |
c906108c SS |
7126 | |
7127 | /* Ask user only if there are some breakpoints to delete. */ | |
7128 | if (!from_tty | |
e2e0b3e5 | 7129 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7130 | { |
c5aa993b JM |
7131 | ALL_BREAKPOINTS_SAFE (b, temp) |
7132 | { | |
7133 | if (b->type != bp_call_dummy && | |
7134 | b->type != bp_shlib_event && | |
c4093a6a | 7135 | b->type != bp_thread_event && |
1900040c | 7136 | b->type != bp_overlay_event && |
c5aa993b JM |
7137 | b->number >= 0) |
7138 | delete_breakpoint (b); | |
7139 | } | |
c906108c SS |
7140 | } |
7141 | } | |
7142 | else | |
7143 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7144 | } | |
7145 | ||
7146 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7147 | The value we return ends up being the return value from catch_errors. | |
7148 | Unused in this case. */ | |
7149 | ||
7150 | static int | |
4efb68b1 | 7151 | breakpoint_re_set_one (void *bint) |
c906108c | 7152 | { |
53a5351d JM |
7153 | /* get past catch_errs */ |
7154 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7155 | struct value *mark; |
7156 | int i; | |
84acb35a JJ |
7157 | int not_found; |
7158 | int *not_found_ptr = NULL; | |
c906108c SS |
7159 | struct symtabs_and_lines sals; |
7160 | char *s; | |
b5de0fa7 | 7161 | enum enable_state save_enable; |
c906108c SS |
7162 | |
7163 | switch (b->type) | |
7164 | { | |
7165 | case bp_none: | |
8a3fe4f8 | 7166 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7167 | b->number); |
c906108c SS |
7168 | return 0; |
7169 | case bp_breakpoint: | |
7170 | case bp_hardware_breakpoint: | |
7171 | case bp_catch_load: | |
7172 | case bp_catch_unload: | |
7173 | if (b->addr_string == NULL) | |
7174 | { | |
7175 | /* Anything without a string can't be re-set. */ | |
7176 | delete_breakpoint (b); | |
7177 | return 0; | |
7178 | } | |
b18c45ed AC |
7179 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7180 | ||
7181 | ``And a hack it is, although Apple's Darwin version of GDB | |
7182 | contains an almost identical hack to implement a "future | |
7183 | break" command. It seems to work in many real world cases, | |
7184 | but it is easy to come up with a test case where the patch | |
7185 | doesn't help at all.'' | |
7186 | ||
7187 | ``It seems that the way GDB implements breakpoints - in - | |
7188 | shared - libraries was designed for a.out shared library | |
7189 | systems (SunOS 4) where shared libraries were loaded at a | |
7190 | fixed address in memory. Since ELF shared libraries can (and | |
7191 | will) be loaded at any address in memory, things break. | |
7192 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7193 | we should add this hack to the branch only. I cannot | |
7194 | guarantee that things will be fixed on the trunk in the near | |
7195 | future.'' | |
7196 | ||
7197 | In case we have a problem, disable this breakpoint. We'll | |
7198 | restore its status if we succeed. Don't disable a | |
7199 | shlib_disabled breakpoint though. There's a fair chance we | |
7200 | can't re-set it if the shared library it's in hasn't been | |
7201 | loaded yet. */ | |
0101ce28 JJ |
7202 | |
7203 | if (b->pending) | |
7204 | break; | |
7205 | ||
b5de0fa7 | 7206 | save_enable = b->enable_state; |
b18c45ed AC |
7207 | if (b->enable_state != bp_shlib_disabled) |
7208 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7209 | else |
7210 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7211 | see an error message if it is not found since we will expect | |
7212 | this to occur until the shared library is finally reloaded. | |
7213 | We accomplish this by giving decode_line_1 a pointer to use | |
7214 | for silent notification that the symbol is not found. */ | |
7215 | not_found_ptr = ¬_found; | |
c906108c SS |
7216 | |
7217 | set_language (b->language); | |
7218 | input_radix = b->input_radix; | |
7219 | s = b->addr_string; | |
84acb35a JJ |
7220 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7221 | not_found_ptr); | |
c906108c SS |
7222 | for (i = 0; i < sals.nelts; i++) |
7223 | { | |
7224 | resolve_sal_pc (&sals.sals[i]); | |
7225 | ||
7226 | /* Reparse conditions, they might contain references to the | |
7227 | old symtab. */ | |
7228 | if (b->cond_string != NULL) | |
7229 | { | |
7230 | s = b->cond_string; | |
7231 | if (b->cond) | |
fad0733a DJ |
7232 | { |
7233 | xfree (b->cond); | |
7234 | /* Avoid re-freeing b->exp if an error during the call | |
7235 | to parse_exp_1. */ | |
7236 | b->cond = NULL; | |
7237 | } | |
c906108c SS |
7238 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7239 | } | |
7240 | ||
c5aa993b | 7241 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7242 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7243 | /* ...or new and old breakpoints both have source files, and |
7244 | the source file name or the line number changes... */ | |
c906108c SS |
7245 | || (b->source_file != NULL |
7246 | && sals.sals[i].symtab != NULL | |
6314a349 | 7247 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7248 | || b->line_number != sals.sals[i].line) |
c906108c | 7249 | ) |
c5aa993b JM |
7250 | /* ...or we switch between having a source file and not having |
7251 | one. */ | |
7252 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7253 | ) | |
c906108c SS |
7254 | { |
7255 | if (b->source_file != NULL) | |
b8c9b27d | 7256 | xfree (b->source_file); |
c906108c SS |
7257 | if (sals.sals[i].symtab == NULL) |
7258 | b->source_file = NULL; | |
7259 | else | |
7260 | b->source_file = | |
7261 | savestring (sals.sals[i].symtab->filename, | |
7262 | strlen (sals.sals[i].symtab->filename)); | |
7263 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7264 | b->loc->requested_address = sals.sals[i].pc; |
7265 | b->loc->address | |
88f7da05 KB |
7266 | = adjust_breakpoint_address (b->loc->requested_address, |
7267 | b->type); | |
c906108c | 7268 | |
c5aa993b | 7269 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7270 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7271 | breakpoints. */ |
c906108c SS |
7272 | |
7273 | mention (b); | |
7274 | ||
7275 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7276 | rather than once for every breakpoint. */ |
c906108c SS |
7277 | breakpoints_changed (); |
7278 | } | |
cf3a9e5b | 7279 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7280 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7281 | |
7282 | ||
c5aa993b | 7283 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7284 | can be used. */ |
9f60f21b | 7285 | check_duplicates (b); |
c906108c SS |
7286 | |
7287 | } | |
b8c9b27d | 7288 | xfree (sals.sals); |
c906108c SS |
7289 | break; |
7290 | ||
7291 | case bp_watchpoint: | |
7292 | case bp_hardware_watchpoint: | |
7293 | case bp_read_watchpoint: | |
7294 | case bp_access_watchpoint: | |
7295 | innermost_block = NULL; | |
53a5351d JM |
7296 | /* The issue arises of what context to evaluate this in. The |
7297 | same one as when it was set, but what does that mean when | |
7298 | symbols have been re-read? We could save the filename and | |
7299 | functionname, but if the context is more local than that, the | |
7300 | best we could do would be something like how many levels deep | |
7301 | and which index at that particular level, but that's going to | |
7302 | be less stable than filenames or function names. */ | |
7303 | ||
c906108c SS |
7304 | /* So for now, just use a global context. */ |
7305 | if (b->exp) | |
a355c7de AC |
7306 | { |
7307 | xfree (b->exp); | |
7308 | /* Avoid re-freeing b->exp if an error during the call to | |
7309 | parse_expression. */ | |
7310 | b->exp = NULL; | |
7311 | } | |
c906108c SS |
7312 | b->exp = parse_expression (b->exp_string); |
7313 | b->exp_valid_block = innermost_block; | |
7314 | mark = value_mark (); | |
7315 | if (b->val) | |
a355c7de AC |
7316 | { |
7317 | value_free (b->val); | |
7318 | /* Avoid re-freeing b->val if an error during the call to | |
7319 | evaluate_expression. */ | |
7320 | b->val = NULL; | |
7321 | } | |
c906108c SS |
7322 | b->val = evaluate_expression (b->exp); |
7323 | release_value (b->val); | |
d69fe07e | 7324 | if (value_lazy (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7325 | value_fetch_lazy (b->val); |
7326 | ||
7327 | if (b->cond_string != NULL) | |
7328 | { | |
7329 | s = b->cond_string; | |
7330 | if (b->cond) | |
a355c7de AC |
7331 | { |
7332 | xfree (b->cond); | |
7333 | /* Avoid re-freeing b->exp if an error during the call | |
7334 | to parse_exp_1. */ | |
7335 | b->cond = NULL; | |
7336 | } | |
c5aa993b | 7337 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7338 | } |
468d015d | 7339 | if (breakpoint_enabled (b)) |
c906108c SS |
7340 | mention (b); |
7341 | value_free_to_mark (mark); | |
7342 | break; | |
c5aa993b JM |
7343 | case bp_catch_catch: |
7344 | case bp_catch_throw: | |
c906108c | 7345 | break; |
c5aa993b JM |
7346 | /* We needn't really do anything to reset these, since the mask |
7347 | that requests them is unaffected by e.g., new libraries being | |
7348 | loaded. */ | |
c906108c SS |
7349 | case bp_catch_fork: |
7350 | case bp_catch_vfork: | |
7351 | case bp_catch_exec: | |
7352 | break; | |
c5aa993b | 7353 | |
c906108c | 7354 | default: |
a3f17187 | 7355 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7356 | /* fall through */ |
1900040c MS |
7357 | /* Delete longjmp and overlay event breakpoints; they will be |
7358 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7359 | case bp_longjmp: |
7360 | case bp_longjmp_resume: | |
1900040c | 7361 | case bp_overlay_event: |
c906108c SS |
7362 | delete_breakpoint (b); |
7363 | break; | |
7364 | ||
c5aa993b JM |
7365 | /* This breakpoint is special, it's set up when the inferior |
7366 | starts and we really don't want to touch it. */ | |
c906108c SS |
7367 | case bp_shlib_event: |
7368 | ||
c4093a6a JM |
7369 | /* Like bp_shlib_event, this breakpoint type is special. |
7370 | Once it is set up, we do not want to touch it. */ | |
7371 | case bp_thread_event: | |
7372 | ||
c5aa993b JM |
7373 | /* Keep temporary breakpoints, which can be encountered when we step |
7374 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7375 | Otherwise these should have been blown away via the cleanup chain | |
7376 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7377 | case bp_until: |
7378 | case bp_finish: | |
7379 | case bp_watchpoint_scope: | |
7380 | case bp_call_dummy: | |
7381 | case bp_step_resume: | |
7382 | break; | |
7383 | } | |
7384 | ||
7385 | return 0; | |
7386 | } | |
7387 | ||
7388 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7389 | void | |
fba45db2 | 7390 | breakpoint_re_set (void) |
c906108c SS |
7391 | { |
7392 | struct breakpoint *b, *temp; | |
7393 | enum language save_language; | |
7394 | int save_input_radix; | |
c5aa993b | 7395 | |
c906108c SS |
7396 | save_language = current_language->la_language; |
7397 | save_input_radix = input_radix; | |
7398 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7399 | { |
53a5351d | 7400 | /* Format possible error msg */ |
9ebf4acf AC |
7401 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7402 | b->number); | |
7403 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7404 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7405 | do_cleanups (cleanups); |
c5aa993b | 7406 | } |
c906108c SS |
7407 | set_language (save_language); |
7408 | input_radix = save_input_radix; | |
7409 | ||
91104499 | 7410 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
9df628e0 RE |
7411 | { |
7412 | create_longjmp_breakpoint ("longjmp"); | |
7413 | create_longjmp_breakpoint ("_longjmp"); | |
7414 | create_longjmp_breakpoint ("siglongjmp"); | |
7415 | create_longjmp_breakpoint ("_siglongjmp"); | |
7416 | create_longjmp_breakpoint (NULL); | |
7417 | } | |
1900040c MS |
7418 | |
7419 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7420 | } |
7421 | \f | |
c906108c SS |
7422 | /* Reset the thread number of this breakpoint: |
7423 | ||
7424 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7425 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7426 | void |
fba45db2 | 7427 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7428 | { |
7429 | if (b->thread != -1) | |
7430 | { | |
39f77062 KB |
7431 | if (in_thread_list (inferior_ptid)) |
7432 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7433 | } |
7434 | } | |
7435 | ||
03ac34d5 MS |
7436 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7437 | If from_tty is nonzero, it prints a message to that effect, | |
7438 | which ends with a period (no newline). */ | |
7439 | ||
c906108c | 7440 | void |
fba45db2 | 7441 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7442 | { |
52f0bd74 | 7443 | struct breakpoint *b; |
c906108c SS |
7444 | |
7445 | if (count < 0) | |
7446 | count = 0; | |
7447 | ||
7448 | ALL_BREAKPOINTS (b) | |
7449 | if (b->number == bptnum) | |
c5aa993b JM |
7450 | { |
7451 | b->ignore_count = count; | |
221ea385 KS |
7452 | if (from_tty) |
7453 | { | |
7454 | if (count == 0) | |
a3f17187 | 7455 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7456 | bptnum); |
7457 | else if (count == 1) | |
a3f17187 | 7458 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7459 | bptnum); |
7460 | else | |
a3f17187 | 7461 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7462 | count, bptnum); |
7463 | } | |
c5aa993b | 7464 | breakpoints_changed (); |
221ea385 | 7465 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7466 | return; |
7467 | } | |
c906108c | 7468 | |
8a3fe4f8 | 7469 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7470 | } |
7471 | ||
7472 | /* Clear the ignore counts of all breakpoints. */ | |
7473 | void | |
fba45db2 | 7474 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7475 | { |
7476 | struct breakpoint *b; | |
7477 | ||
7478 | ALL_BREAKPOINTS (b) | |
7479 | b->ignore_count = 0; | |
7480 | } | |
7481 | ||
7482 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7483 | ||
7484 | static void | |
fba45db2 | 7485 | ignore_command (char *args, int from_tty) |
c906108c SS |
7486 | { |
7487 | char *p = args; | |
52f0bd74 | 7488 | int num; |
c906108c SS |
7489 | |
7490 | if (p == 0) | |
e2e0b3e5 | 7491 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7492 | |
c906108c | 7493 | num = get_number (&p); |
5c44784c | 7494 | if (num == 0) |
8a3fe4f8 | 7495 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7496 | if (*p == 0) |
8a3fe4f8 | 7497 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7498 | |
7499 | set_ignore_count (num, | |
7500 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7501 | from_tty); | |
221ea385 KS |
7502 | if (from_tty) |
7503 | printf_filtered ("\n"); | |
c906108c SS |
7504 | } |
7505 | \f | |
7506 | /* Call FUNCTION on each of the breakpoints | |
7507 | whose numbers are given in ARGS. */ | |
7508 | ||
7509 | static void | |
831662b3 | 7510 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7511 | { |
52f0bd74 | 7512 | char *p = args; |
c906108c | 7513 | char *p1; |
52f0bd74 AC |
7514 | int num; |
7515 | struct breakpoint *b, *tmp; | |
11cf8741 | 7516 | int match; |
c906108c SS |
7517 | |
7518 | if (p == 0) | |
e2e0b3e5 | 7519 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7520 | |
7521 | while (*p) | |
7522 | { | |
11cf8741 | 7523 | match = 0; |
c906108c | 7524 | p1 = p; |
c5aa993b | 7525 | |
5c44784c JM |
7526 | num = get_number_or_range (&p1); |
7527 | if (num == 0) | |
c5aa993b | 7528 | { |
8a3fe4f8 | 7529 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7530 | } |
7531 | else | |
7532 | { | |
7533 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7534 | if (b->number == num) | |
7535 | { | |
7536 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7537 | match = 1; |
5c44784c JM |
7538 | function (b); |
7539 | if (related_breakpoint) | |
7540 | function (related_breakpoint); | |
11cf8741 | 7541 | break; |
5c44784c | 7542 | } |
11cf8741 | 7543 | if (match == 0) |
a3f17187 | 7544 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7545 | } |
c906108c SS |
7546 | p = p1; |
7547 | } | |
7548 | } | |
7549 | ||
1900040c MS |
7550 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7551 | If from_tty is nonzero, it prints a message to that effect, | |
7552 | which ends with a period (no newline). */ | |
7553 | ||
c906108c | 7554 | void |
fba45db2 | 7555 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7556 | { |
7557 | /* Never disable a watchpoint scope breakpoint; we want to | |
7558 | hit them when we leave scope so we can delete both the | |
7559 | watchpoint and its scope breakpoint at that time. */ | |
7560 | if (bpt->type == bp_watchpoint_scope) | |
7561 | return; | |
7562 | ||
c2c6d25f | 7563 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7564 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7565 | return; |
7566 | ||
b5de0fa7 | 7567 | bpt->enable_state = bp_disabled; |
c906108c | 7568 | |
9f60f21b | 7569 | check_duplicates (bpt); |
c906108c | 7570 | |
9a4105ab AC |
7571 | if (deprecated_modify_breakpoint_hook) |
7572 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7573 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7574 | } |
7575 | ||
c906108c | 7576 | static void |
fba45db2 | 7577 | disable_command (char *args, int from_tty) |
c906108c | 7578 | { |
52f0bd74 | 7579 | struct breakpoint *bpt; |
c906108c SS |
7580 | if (args == 0) |
7581 | ALL_BREAKPOINTS (bpt) | |
7582 | switch (bpt->type) | |
c5aa993b JM |
7583 | { |
7584 | case bp_none: | |
8a3fe4f8 | 7585 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7586 | bpt->number); |
c5aa993b JM |
7587 | continue; |
7588 | case bp_breakpoint: | |
7589 | case bp_catch_load: | |
7590 | case bp_catch_unload: | |
7591 | case bp_catch_fork: | |
7592 | case bp_catch_vfork: | |
7593 | case bp_catch_exec: | |
7594 | case bp_catch_catch: | |
7595 | case bp_catch_throw: | |
7596 | case bp_hardware_breakpoint: | |
7597 | case bp_watchpoint: | |
7598 | case bp_hardware_watchpoint: | |
7599 | case bp_read_watchpoint: | |
7600 | case bp_access_watchpoint: | |
7601 | disable_breakpoint (bpt); | |
7602 | default: | |
7603 | continue; | |
7604 | } | |
c906108c SS |
7605 | else |
7606 | map_breakpoint_numbers (args, disable_breakpoint); | |
7607 | } | |
7608 | ||
7609 | static void | |
fba45db2 | 7610 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7611 | { |
c906108c SS |
7612 | int target_resources_ok, other_type_used; |
7613 | struct value *mark; | |
7614 | ||
7615 | if (bpt->type == bp_hardware_breakpoint) | |
7616 | { | |
7617 | int i; | |
c5aa993b | 7618 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7619 | target_resources_ok = |
7620 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7621 | i + 1, 0); | |
c906108c | 7622 | if (target_resources_ok == 0) |
8a3fe4f8 | 7623 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7624 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7625 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7626 | } |
7627 | ||
0101ce28 | 7628 | if (bpt->pending) |
c906108c | 7629 | { |
0101ce28 | 7630 | if (bpt->enable_state != bp_enabled) |
c906108c | 7631 | { |
0101ce28 JJ |
7632 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7633 | is resolvable since shared libraries could have been loaded | |
7634 | after the breakpoint was disabled. */ | |
7635 | breakpoints_changed (); | |
7636 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7637 | { |
0101ce28 | 7638 | delete_breakpoint (bpt); |
c906108c SS |
7639 | return; |
7640 | } | |
0101ce28 JJ |
7641 | bpt->enable_state = bp_enabled; |
7642 | bpt->disposition = disposition; | |
c906108c | 7643 | } |
0101ce28 JJ |
7644 | } |
7645 | else /* Not a pending breakpoint. */ | |
7646 | { | |
7647 | if (bpt->enable_state != bp_permanent) | |
7648 | bpt->enable_state = bp_enabled; | |
7649 | bpt->disposition = disposition; | |
7650 | check_duplicates (bpt); | |
7651 | breakpoints_changed (); | |
7652 | ||
7653 | if (bpt->type == bp_watchpoint || | |
7654 | bpt->type == bp_hardware_watchpoint || | |
7655 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7656 | bpt->type == bp_access_watchpoint) |
7657 | { | |
7789d0fa AC |
7658 | struct frame_id saved_frame_id; |
7659 | ||
b04f3ab4 | 7660 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7661 | if (bpt->exp_valid_block != NULL) |
7662 | { | |
7663 | struct frame_info *fr = | |
7664 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7665 | if (fr == NULL) | |
7666 | { | |
a3f17187 | 7667 | printf_filtered (_("\ |
0101ce28 | 7668 | Cannot enable watchpoint %d because the block in which its expression\n\ |
a3f17187 | 7669 | is valid is not currently in scope.\n"), bpt->number); |
0101ce28 JJ |
7670 | bpt->enable_state = bp_disabled; |
7671 | return; | |
7672 | } | |
0101ce28 JJ |
7673 | select_frame (fr); |
7674 | } | |
7675 | ||
7676 | value_free (bpt->val); | |
7677 | mark = value_mark (); | |
7678 | bpt->val = evaluate_expression (bpt->exp); | |
7679 | release_value (bpt->val); | |
d69fe07e | 7680 | if (value_lazy (bpt->val)) |
0101ce28 JJ |
7681 | value_fetch_lazy (bpt->val); |
7682 | ||
7683 | if (bpt->type == bp_hardware_watchpoint || | |
7684 | bpt->type == bp_read_watchpoint || | |
7685 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7686 | { |
0101ce28 JJ |
7687 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7688 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7689 | ||
7690 | /* Hack around 'unused var' error for some targets here */ | |
d5d6fca5 | 7691 | (void) mem_cnt, (void) i; |
0101ce28 JJ |
7692 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( |
7693 | bpt->type, i + mem_cnt, other_type_used); | |
7694 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7695 | bp_watchpoint in the following condition */ | |
7696 | if (target_resources_ok < 0) | |
7697 | { | |
a3f17187 | 7698 | printf_filtered (_("\ |
c906108c | 7699 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7700 | have been allocated for other watchpoints.\n"), bpt->number); |
0101ce28 JJ |
7701 | bpt->enable_state = bp_disabled; |
7702 | value_free_to_mark (mark); | |
7703 | return; | |
7704 | } | |
c5aa993b | 7705 | } |
0101ce28 | 7706 | |
7789d0fa | 7707 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7708 | value_free_to_mark (mark); |
c5aa993b | 7709 | } |
c906108c | 7710 | } |
0101ce28 | 7711 | |
9a4105ab AC |
7712 | if (deprecated_modify_breakpoint_hook) |
7713 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7714 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7715 | } |
7716 | ||
7717 | void | |
fba45db2 | 7718 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7719 | { |
7720 | do_enable_breakpoint (bpt, bpt->disposition); | |
7721 | } | |
7722 | ||
7723 | /* The enable command enables the specified breakpoints (or all defined | |
7724 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7725 | in stopping the inferior. */ |
c906108c | 7726 | |
c906108c | 7727 | static void |
fba45db2 | 7728 | enable_command (char *args, int from_tty) |
c906108c | 7729 | { |
52f0bd74 | 7730 | struct breakpoint *bpt; |
c906108c SS |
7731 | if (args == 0) |
7732 | ALL_BREAKPOINTS (bpt) | |
7733 | switch (bpt->type) | |
c5aa993b JM |
7734 | { |
7735 | case bp_none: | |
8a3fe4f8 | 7736 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7737 | bpt->number); |
c5aa993b JM |
7738 | continue; |
7739 | case bp_breakpoint: | |
7740 | case bp_catch_load: | |
7741 | case bp_catch_unload: | |
7742 | case bp_catch_fork: | |
7743 | case bp_catch_vfork: | |
7744 | case bp_catch_exec: | |
7745 | case bp_catch_catch: | |
7746 | case bp_catch_throw: | |
7747 | case bp_hardware_breakpoint: | |
7748 | case bp_watchpoint: | |
7749 | case bp_hardware_watchpoint: | |
7750 | case bp_read_watchpoint: | |
7751 | case bp_access_watchpoint: | |
7752 | enable_breakpoint (bpt); | |
7753 | default: | |
7754 | continue; | |
7755 | } | |
c906108c SS |
7756 | else |
7757 | map_breakpoint_numbers (args, enable_breakpoint); | |
7758 | } | |
7759 | ||
7760 | static void | |
fba45db2 | 7761 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7762 | { |
b5de0fa7 | 7763 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7764 | } |
7765 | ||
c906108c | 7766 | static void |
fba45db2 | 7767 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7768 | { |
7769 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7770 | } | |
7771 | ||
7772 | static void | |
fba45db2 | 7773 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7774 | { |
b5de0fa7 | 7775 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7776 | } |
7777 | ||
c906108c | 7778 | static void |
fba45db2 | 7779 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7780 | { |
7781 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7782 | } | |
7783 | \f | |
fa8d40ab JJ |
7784 | static void |
7785 | set_breakpoint_cmd (char *args, int from_tty) | |
7786 | { | |
7787 | } | |
7788 | ||
7789 | static void | |
7790 | show_breakpoint_cmd (char *args, int from_tty) | |
7791 | { | |
7792 | } | |
7793 | ||
c906108c SS |
7794 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7795 | ||
7796 | struct symtabs_and_lines | |
fba45db2 | 7797 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7798 | { |
7799 | struct symtabs_and_lines sals; | |
7800 | if (string == 0) | |
8a3fe4f8 | 7801 | error (_("Empty line specification.")); |
c906108c SS |
7802 | if (default_breakpoint_valid) |
7803 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7804 | default_breakpoint_symtab, |
7805 | default_breakpoint_line, | |
68219205 | 7806 | (char ***) NULL, NULL); |
c906108c SS |
7807 | else |
7808 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7809 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7810 | if (*string) |
8a3fe4f8 | 7811 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7812 | return sals; |
7813 | } | |
8181d85f DJ |
7814 | |
7815 | /* Create and insert a raw software breakpoint at PC. Return an | |
7816 | identifier, which should be used to remove the breakpoint later. | |
7817 | In general, places which call this should be using something on the | |
7818 | breakpoint chain instead; this function should be eliminated | |
7819 | someday. */ | |
7820 | ||
7821 | void * | |
7822 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
7823 | { | |
7824 | struct bp_target_info *bp_tgt; | |
7825 | ||
7826 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
7827 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
7828 | ||
7829 | bp_tgt->placed_address = pc; | |
7830 | if (target_insert_breakpoint (bp_tgt) != 0) | |
7831 | { | |
7832 | /* Could not insert the breakpoint. */ | |
7833 | xfree (bp_tgt); | |
7834 | return NULL; | |
7835 | } | |
7836 | ||
7837 | return bp_tgt; | |
7838 | } | |
7839 | ||
7840 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
7841 | ||
7842 | int | |
7843 | deprecated_remove_raw_breakpoint (void *bp) | |
7844 | { | |
7845 | struct bp_target_info *bp_tgt = bp; | |
7846 | int ret; | |
7847 | ||
7848 | ret = target_remove_breakpoint (bp_tgt); | |
7849 | xfree (bp_tgt); | |
7850 | ||
7851 | return ret; | |
7852 | } | |
7853 | ||
7854 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
7855 | ||
7856 | static void *single_step_breakpoints[2]; | |
7857 | ||
7858 | /* Create and insert a breakpoint for software single step. */ | |
7859 | ||
7860 | void | |
7861 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
7862 | { | |
7863 | void **bpt_p; | |
7864 | ||
7865 | if (single_step_breakpoints[0] == NULL) | |
7866 | bpt_p = &single_step_breakpoints[0]; | |
7867 | else | |
7868 | { | |
7869 | gdb_assert (single_step_breakpoints[1] == NULL); | |
7870 | bpt_p = &single_step_breakpoints[1]; | |
7871 | } | |
7872 | ||
7873 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
7874 | to only create the breakpoints once, and actually put them on the | |
7875 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
7876 | adjust the addresses each time they were needed. Doing this requires | |
7877 | corresponding changes elsewhere where single step breakpoints are | |
7878 | handled, however. So, for now, we use this. */ | |
7879 | ||
7880 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
7881 | if (*bpt_p == NULL) | |
1893a4c0 | 7882 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
7883 | paddr_nz (next_pc)); |
7884 | } | |
7885 | ||
7886 | /* Remove and delete any breakpoints used for software single step. */ | |
7887 | ||
7888 | void | |
7889 | remove_single_step_breakpoints (void) | |
7890 | { | |
7891 | gdb_assert (single_step_breakpoints[0] != NULL); | |
7892 | ||
7893 | /* See insert_single_step_breakpoint for more about this deprecated | |
7894 | call. */ | |
7895 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
7896 | single_step_breakpoints[0] = NULL; | |
7897 | ||
7898 | if (single_step_breakpoints[1] != NULL) | |
7899 | { | |
7900 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
7901 | single_step_breakpoints[1] = NULL; | |
7902 | } | |
7903 | } | |
7904 | ||
1aafd4da UW |
7905 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
7906 | ||
7907 | static int | |
7908 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
7909 | { | |
7910 | int i; | |
7911 | ||
7912 | for (i = 0; i < 2; i++) | |
7913 | { | |
7914 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
7915 | if (bp_tgt && bp_tgt->placed_address == pc) | |
7916 | return 1; | |
7917 | } | |
7918 | ||
7919 | return 0; | |
7920 | } | |
7921 | ||
c906108c | 7922 | \f |
31e2b00f AS |
7923 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
7924 | It is defined as a macro to prevent duplication. | |
7925 | COMMAND should be a string constant containing the name of the command. */ | |
7926 | #define BREAK_ARGS_HELP(command) \ | |
7927 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
7928 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
7929 | If a line number is specified, break at start of code for that line.\n\ | |
7930 | If a function is specified, break at start of code for that function.\n\ | |
7931 | If an address is specified, break at that exact address.\n\ | |
7932 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
7933 | This is useful for breaking on return to a stack frame.\n\ | |
7934 | \n\ | |
7935 | THREADNUM is the number from \"info threads\".\n\ | |
7936 | CONDITION is a boolean expression.\n\ | |
7937 | \n\ | |
7938 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7939 | \n\ | |
7940 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
7941 | ||
c906108c | 7942 | void |
fba45db2 | 7943 | _initialize_breakpoint (void) |
c906108c | 7944 | { |
fa8d40ab JJ |
7945 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7946 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7947 | struct cmd_list_element *c; |
7948 | ||
84acb35a | 7949 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 7950 | |
c906108c SS |
7951 | breakpoint_chain = 0; |
7952 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7953 | before a breakpoint is set. */ | |
7954 | breakpoint_count = 0; | |
7955 | ||
1bedd215 AC |
7956 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
7957 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
7958 | Usage is `ignore N COUNT'.")); | |
c906108c | 7959 | if (xdb_commands) |
c5aa993b | 7960 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 7961 | |
1bedd215 AC |
7962 | add_com ("commands", class_breakpoint, commands_command, _("\ |
7963 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
7964 | Give breakpoint number as argument after \"commands\".\n\ |
7965 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7966 | The commands themselves follow starting on the next line.\n\ | |
7967 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7968 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 7969 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 7970 | |
1bedd215 AC |
7971 | add_com ("condition", class_breakpoint, condition_command, _("\ |
7972 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 7973 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 7974 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 7975 | |
1bedd215 | 7976 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 7977 | Set a temporary breakpoint.\n\ |
c906108c SS |
7978 | Like \"break\" except the breakpoint is only temporary,\n\ |
7979 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
7980 | by using \"enable delete\" on the breakpoint number.\n\ |
7981 | \n" | |
7982 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 7983 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 7984 | |
1bedd215 | 7985 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 7986 | Set a hardware assisted breakpoint.\n\ |
c906108c | 7987 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
7988 | some target hardware may not have this support.\n\ |
7989 | \n" | |
7990 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 7991 | set_cmd_completer (c, location_completer); |
c906108c | 7992 | |
1bedd215 | 7993 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 7994 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 7995 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
7996 | so it will be deleted when hit.\n\ |
7997 | \n" | |
7998 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 7999 | set_cmd_completer (c, location_completer); |
c906108c | 8000 | |
1bedd215 AC |
8001 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8002 | Enable some breakpoints.\n\ | |
c906108c SS |
8003 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8004 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8005 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8006 | With a subcommand you can enable temporarily."), |
c906108c SS |
8007 | &enablelist, "enable ", 1, &cmdlist); |
8008 | if (xdb_commands) | |
1bedd215 AC |
8009 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8010 | Enable some breakpoints.\n\ | |
c906108c SS |
8011 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8012 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8013 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8014 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8015 | |
8016 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8017 | ||
1bedd215 AC |
8018 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8019 | Enable some breakpoints.\n\ | |
c906108c SS |
8020 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8021 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8022 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8023 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8024 | |
1a966eab AC |
8025 | add_cmd ("once", no_class, enable_once_command, _("\ |
8026 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8027 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8028 | &enablebreaklist); |
8029 | ||
1a966eab AC |
8030 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8031 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8032 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8033 | &enablebreaklist); |
8034 | ||
1a966eab AC |
8035 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8036 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8037 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8038 | &enablelist); |
8039 | ||
1a966eab AC |
8040 | add_cmd ("once", no_class, enable_once_command, _("\ |
8041 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8042 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8043 | &enablelist); |
8044 | ||
1bedd215 AC |
8045 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8046 | Disable some breakpoints.\n\ | |
c906108c SS |
8047 | Arguments are breakpoint numbers with spaces in between.\n\ |
8048 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8049 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8050 | &disablelist, "disable ", 1, &cmdlist); |
8051 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8052 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8053 | if (xdb_commands) | |
1bedd215 AC |
8054 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8055 | Disable some breakpoints.\n\ | |
c906108c SS |
8056 | Arguments are breakpoint numbers with spaces in between.\n\ |
8057 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8058 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8059 | |
1a966eab AC |
8060 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8061 | Disable some breakpoints.\n\ | |
c906108c SS |
8062 | Arguments are breakpoint numbers with spaces in between.\n\ |
8063 | To disable all breakpoints, give no argument.\n\ | |
8064 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8065 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8066 | &disablelist); |
8067 | ||
1bedd215 AC |
8068 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8069 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8070 | Arguments are breakpoint numbers with spaces in between.\n\ |
8071 | To delete all breakpoints, give no argument.\n\ | |
8072 | \n\ | |
8073 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8074 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8075 | &deletelist, "delete ", 1, &cmdlist); |
8076 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8077 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8078 | if (xdb_commands) |
1bedd215 AC |
8079 | add_com ("db", class_breakpoint, delete_command, _("\ |
8080 | Delete some breakpoints.\n\ | |
c906108c | 8081 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8082 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8083 | |
1a966eab AC |
8084 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8085 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8086 | Arguments are breakpoint numbers with spaces in between.\n\ |
8087 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8088 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8089 | &deletelist); |
8090 | ||
1bedd215 AC |
8091 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8092 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8093 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8094 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8095 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8096 | If an address is specified, breakpoints at that address are cleared.\n\ |
8097 | \n\ | |
8098 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8099 | is executing in.\n\ |
8100 | \n\ | |
1bedd215 | 8101 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8102 | |
1bedd215 | 8103 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8104 | Set breakpoint at specified line or function.\n" |
8105 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8106 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8107 | |
c906108c SS |
8108 | add_com_alias ("b", "break", class_run, 1); |
8109 | add_com_alias ("br", "break", class_run, 1); | |
8110 | add_com_alias ("bre", "break", class_run, 1); | |
8111 | add_com_alias ("brea", "break", class_run, 1); | |
8112 | ||
502fd408 | 8113 | if (xdb_commands) |
c906108c SS |
8114 | { |
8115 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8116 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8117 | } |
8118 | ||
8119 | if (dbx_commands) | |
8120 | { | |
1bedd215 AC |
8121 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8122 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8123 | &stoplist, "stop ", 1, &cmdlist); |
8124 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8125 | _("Break in function or address."), &stoplist); |
c5aa993b | 8126 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8127 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8128 | add_com ("status", class_info, breakpoints_info, _("\ |
8129 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8130 | The \"Type\" column indicates one of:\n\ |
8131 | \tbreakpoint - normal breakpoint\n\ | |
8132 | \twatchpoint - watchpoint\n\ | |
8133 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8134 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8135 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8136 | address and file/line number respectively.\n\ |
8137 | \n\ | |
8138 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8139 | are set to the address of the last breakpoint listed unless the command\n\ |
8140 | is prefixed with \"server \".\n\n\ | |
c906108c | 8141 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8142 | breakpoint set.")); |
c906108c SS |
8143 | } |
8144 | ||
1bedd215 AC |
8145 | add_info ("breakpoints", breakpoints_info, _("\ |
8146 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8147 | The \"Type\" column indicates one of:\n\ |
8148 | \tbreakpoint - normal breakpoint\n\ | |
8149 | \twatchpoint - watchpoint\n\ | |
8150 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8151 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8152 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8153 | address and file/line number respectively.\n\ |
8154 | \n\ | |
8155 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8156 | are set to the address of the last breakpoint listed unless the command\n\ |
8157 | is prefixed with \"server \".\n\n\ | |
c906108c | 8158 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8159 | breakpoint set.")); |
c906108c SS |
8160 | |
8161 | if (xdb_commands) | |
1bedd215 AC |
8162 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8163 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8164 | The \"Type\" column indicates one of:\n\ |
8165 | \tbreakpoint - normal breakpoint\n\ | |
8166 | \twatchpoint - watchpoint\n\ | |
8167 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8168 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8169 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8170 | address and file/line number respectively.\n\ |
8171 | \n\ | |
8172 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8173 | are set to the address of the last breakpoint listed unless the command\n\ |
8174 | is prefixed with \"server \".\n\n\ | |
c906108c | 8175 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8176 | breakpoint set.")); |
c906108c | 8177 | |
1a966eab AC |
8178 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8179 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8180 | The \"Type\" column indicates one of:\n\ |
8181 | \tbreakpoint - normal breakpoint\n\ | |
8182 | \twatchpoint - watchpoint\n\ | |
8183 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8184 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8185 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8186 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8187 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8188 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8189 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8190 | address and file/line number respectively.\n\ |
8191 | \n\ | |
8192 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8193 | are set to the address of the last breakpoint listed unless the command\n\ |
8194 | is prefixed with \"server \".\n\n\ | |
c906108c | 8195 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8196 | breakpoint set."), |
c906108c SS |
8197 | &maintenanceinfolist); |
8198 | ||
1bedd215 AC |
8199 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8200 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8201 | Raised signals may be caught:\n\ |
8202 | \tcatch signal - all signals\n\ | |
8203 | \tcatch signal <signame> - a particular signal\n\ | |
8204 | Raised exceptions may be caught:\n\ | |
8205 | \tcatch throw - all exceptions, when thrown\n\ | |
8206 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8207 | \tcatch catch - all exceptions, when caught\n\ | |
8208 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8209 | Thread or process events may be caught:\n\ | |
8210 | \tcatch thread_start - any threads, just after creation\n\ | |
8211 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8212 | \tcatch thread_join - any threads, just after joins\n\ | |
8213 | Process events may be caught:\n\ | |
8214 | \tcatch start - any processes, just after creation\n\ | |
8215 | \tcatch exit - any processes, just before expiration\n\ | |
8216 | \tcatch fork - calls to fork()\n\ | |
8217 | \tcatch vfork - calls to vfork()\n\ | |
8218 | \tcatch exec - calls to exec()\n\ | |
8219 | Dynamically-linked library events may be caught:\n\ | |
8220 | \tcatch load - loads of any library\n\ | |
8221 | \tcatch load <libname> - loads of a particular library\n\ | |
8222 | \tcatch unload - unloads of any library\n\ | |
8223 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8224 | The act of your program's execution stopping may also be caught:\n\ | |
8225 | \tcatch stop\n\n\ | |
8226 | C++ exceptions may be caught:\n\ | |
8227 | \tcatch throw - all exceptions, when thrown\n\ | |
8228 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8229 | Ada exceptions may be caught:\n\ |
8230 | \tcatch exception - all exceptions, when raised\n\ | |
8231 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8232 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8233 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8234 | \n\ |
8235 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8236 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8237 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8238 | |
1bedd215 AC |
8239 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8240 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8241 | Args like \"catch\" command.\n\ |
8242 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8243 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8244 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8245 | |
1bedd215 AC |
8246 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8247 | Set a watchpoint for an expression.\n\ | |
c906108c | 8248 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8249 | an expression changes.")); |
5ba2abeb | 8250 | set_cmd_completer (c, location_completer); |
c906108c | 8251 | |
1bedd215 AC |
8252 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8253 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8254 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8255 | an expression is read.")); |
5ba2abeb | 8256 | set_cmd_completer (c, location_completer); |
c906108c | 8257 | |
1bedd215 AC |
8258 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8259 | Set a watchpoint for an expression.\n\ | |
c906108c | 8260 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8261 | an expression is either read or written.")); |
5ba2abeb | 8262 | set_cmd_completer (c, location_completer); |
c906108c SS |
8263 | |
8264 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8265 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8266 | |
8267 | ||
920d2a44 AC |
8268 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8269 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8270 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8271 | &can_use_hw_watchpoints, _("\ | |
8272 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8273 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8274 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8275 | such is available. (However, any hardware watchpoints that were\n\ | |
8276 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8277 | hardware.)"), |
8278 | NULL, | |
920d2a44 | 8279 | show_can_use_hw_watchpoints, |
85c07804 | 8280 | &setlist, &showlist); |
c906108c SS |
8281 | |
8282 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8283 | |
1bedd215 | 8284 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8285 | Breakpoint specific settings\n\ |
8286 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8287 | pending breakpoint behavior"), |
fa8d40ab JJ |
8288 | &breakpoint_set_cmdlist, "set breakpoint ", |
8289 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8290 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8291 | Breakpoint specific settings\n\ |
8292 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8293 | pending breakpoint behavior"), |
fa8d40ab JJ |
8294 | &breakpoint_show_cmdlist, "show breakpoint ", |
8295 | 0/*allow-unknown*/, &showlist); | |
8296 | ||
7915a72c AC |
8297 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8298 | &pending_break_support, _("\ | |
8299 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8300 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8301 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8302 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8303 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8304 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8305 | NULL, |
920d2a44 | 8306 | show_pending_break_support, |
6e1d7d6c AC |
8307 | &breakpoint_set_cmdlist, |
8308 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8309 | |
8310 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8311 | |
8312 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8313 | &automatic_hardware_breakpoints, _("\ | |
8314 | Set automatic usage of hardware breakpoints."), _("\ | |
8315 | Show automatic usage of hardware breakpoints."), _("\ | |
8316 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8317 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8318 | a warning will be emitted for such breakpoints."), | |
8319 | NULL, | |
8320 | show_automatic_hardware_breakpoints, | |
8321 | &breakpoint_set_cmdlist, | |
8322 | &breakpoint_show_cmdlist); | |
8323 | ||
8324 | automatic_hardware_breakpoints = 1; | |
c906108c | 8325 | } |