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" |
c906108c | 58 | |
104c1213 | 59 | #include "gdb-events.h" |
034dad6f | 60 | #include "mi/mi-common.h" |
104c1213 | 61 | |
c906108c SS |
62 | /* Prototypes for local functions. */ |
63 | ||
c2c6d25f JM |
64 | static void until_break_command_continuation (struct continuation_arg *arg); |
65 | ||
a14ed312 | 66 | static void catch_command_1 (char *, int, int); |
c906108c | 67 | |
a14ed312 | 68 | static void enable_delete_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_once_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 75 | |
a14ed312 | 76 | static void disable_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void enable_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 81 | |
a14ed312 | 82 | static void ignore_command (char *, int); |
c906108c | 83 | |
4efb68b1 | 84 | static int breakpoint_re_set_one (void *); |
c906108c | 85 | |
a14ed312 | 86 | static void clear_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void catch_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void watch_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 93 | |
0101ce28 | 94 | static int break_command_1 (char *, int, int, struct breakpoint *); |
c906108c | 95 | |
a14ed312 | 96 | static void mention (struct breakpoint *); |
c906108c | 97 | |
4d28f7a8 | 98 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 99 | |
9f60f21b | 100 | static void check_duplicates (struct breakpoint *); |
c906108c | 101 | |
76897487 KB |
102 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
103 | ||
88f7da05 KB |
104 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
105 | enum bptype bptype); | |
76897487 | 106 | |
d674a25c | 107 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void breakpoints_info (char *, int); |
c906108c | 110 | |
a14ed312 | 111 | static void breakpoint_1 (int, int); |
c906108c | 112 | |
a14ed312 | 113 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 114 | |
4efb68b1 | 115 | static int breakpoint_cond_eval (void *); |
c906108c | 116 | |
4efb68b1 | 117 | static void cleanup_executing_breakpoints (void *); |
c906108c | 118 | |
a14ed312 | 119 | static void commands_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void condition_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static int get_number_trailer (char **, int); |
c906108c | 124 | |
a14ed312 | 125 | void set_breakpoint_count (int); |
c906108c | 126 | |
c5aa993b JM |
127 | typedef enum |
128 | { | |
129 | mark_inserted, | |
130 | mark_uninserted | |
131 | } | |
132 | insertion_state_t; | |
c906108c | 133 | |
0bde7532 | 134 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 135 | |
a14ed312 | 136 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
137 | |
138 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 139 | |
c5aa993b JM |
140 | typedef struct |
141 | { | |
142 | enum exception_event_kind kind; | |
b5de0fa7 | 143 | int enable_p; |
c5aa993b JM |
144 | } |
145 | args_for_catchpoint_enable; | |
c906108c | 146 | |
4efb68b1 | 147 | static int watchpoint_check (void *); |
c906108c | 148 | |
4efb68b1 | 149 | static int cover_target_enable_exception_callback (void *); |
c906108c | 150 | |
a14ed312 | 151 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void create_longjmp_breakpoint (char *); |
c906108c | 154 | |
1900040c MS |
155 | static void create_overlay_event_breakpoint (char *); |
156 | ||
a14ed312 | 157 | static int hw_breakpoint_used_count (void); |
c906108c | 158 | |
a14ed312 | 159 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 160 | |
a14ed312 | 161 | static void hbreak_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void thbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void watch_command_1 (char *, int, int); |
c906108c | 166 | |
a14ed312 | 167 | static void rwatch_command (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static void awatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 172 | |
a14ed312 KB |
173 | static void solib_load_unload_1 (char *hookname, |
174 | int tempflag, | |
175 | char *dll_pathname, | |
176 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 177 | |
a14ed312 KB |
178 | static void create_fork_vfork_event_catchpoint (int tempflag, |
179 | char *cond_string, | |
180 | enum bptype bp_kind); | |
7a292a7a | 181 | |
a14ed312 | 182 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 191 | |
a14ed312 | 192 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 193 | |
d85310f7 MS |
194 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
195 | enum exception_event_kind ex_event, | |
196 | struct symtab_and_line *sal); | |
7a292a7a | 197 | |
d85310f7 MS |
198 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
199 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 200 | |
a14ed312 | 201 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 202 | |
a14ed312 | 203 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 204 | |
c906108c SS |
205 | /* Prototypes for exported functions. */ |
206 | ||
c906108c SS |
207 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
208 | if such is available. */ | |
209 | static int can_use_hw_watchpoints; | |
210 | ||
920d2a44 AC |
211 | static void |
212 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
213 | struct cmd_list_element *c, | |
214 | const char *value) | |
215 | { | |
216 | fprintf_filtered (file, _("\ | |
217 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
218 | value); | |
219 | } | |
220 | ||
fa8d40ab JJ |
221 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
222 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
223 | for unrecognized breakpoint locations. | |
224 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
225 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
226 | static void |
227 | show_pending_break_support (struct ui_file *file, int from_tty, | |
228 | struct cmd_list_element *c, | |
229 | const char *value) | |
230 | { | |
231 | fprintf_filtered (file, _("\ | |
232 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
233 | value); | |
234 | } | |
fa8d40ab | 235 | |
765dc015 VP |
236 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
237 | set with "break" but falling in read-only memory. | |
238 | If 0, gdb will warn about such breakpoints, but won't automatically | |
239 | use hardware breakpoints. */ | |
240 | static int automatic_hardware_breakpoints; | |
241 | static void | |
242 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
243 | struct cmd_list_element *c, | |
244 | const char *value) | |
245 | { | |
246 | fprintf_filtered (file, _("\ | |
247 | Automatic usage of hardware breakpoints is %s.\n"), | |
248 | value); | |
249 | } | |
250 | ||
251 | ||
a14ed312 | 252 | void _initialize_breakpoint (void); |
c906108c | 253 | |
c5aa993b | 254 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 255 | |
c906108c SS |
256 | /* Are we executing breakpoint commands? */ |
257 | static int executing_breakpoint_commands; | |
258 | ||
c02f5703 MS |
259 | /* Are overlay event breakpoints enabled? */ |
260 | static int overlay_events_enabled; | |
261 | ||
c906108c SS |
262 | /* Walk the following statement or block through all breakpoints. |
263 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
264 | breakpoint. */ | |
265 | ||
5c44784c | 266 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 267 | |
5c44784c JM |
268 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
269 | for (B = breakpoint_chain; \ | |
270 | B ? (TMP=B->next, 1): 0; \ | |
271 | B = TMP) | |
c906108c | 272 | |
7cc221ef DJ |
273 | /* Similar iterators for the low-level breakpoints. */ |
274 | ||
275 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->next) | |
276 | ||
277 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
278 | for (B = bp_location_chain; \ | |
279 | B ? (TMP=B->next, 1): 0; \ | |
280 | B = TMP) | |
281 | ||
c906108c SS |
282 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
283 | ||
284 | int show_breakpoint_hit_counts = 1; | |
285 | ||
7cc221ef | 286 | /* Chains of all breakpoints defined. */ |
c906108c SS |
287 | |
288 | struct breakpoint *breakpoint_chain; | |
289 | ||
7cc221ef DJ |
290 | struct bp_location *bp_location_chain; |
291 | ||
c906108c SS |
292 | /* Number of last breakpoint made. */ |
293 | ||
294 | int breakpoint_count; | |
295 | ||
c5aa993b JM |
296 | /* Pointer to current exception event record */ |
297 | static struct exception_event_record *current_exception_event; | |
c906108c | 298 | |
f83f82bc AC |
299 | /* Indicator of whether exception catchpoints should be nuked between |
300 | runs of a program. */ | |
301 | int deprecated_exception_catchpoints_are_fragile = 0; | |
c5aa993b | 302 | |
c906108c | 303 | /* Indicator of when exception catchpoints set-up should be |
f83f82bc AC |
304 | reinitialized -- e.g. when program is re-run. */ |
305 | int deprecated_exception_support_initialized = 0; | |
c906108c SS |
306 | |
307 | /* This function returns a pointer to the string representation of the | |
308 | pathname of the dynamically-linked library that has just been | |
309 | loaded. | |
310 | ||
311 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
312 | or undefined results are guaranteed. | |
313 | ||
314 | This string's contents are only valid immediately after the | |
315 | inferior has stopped in the dynamic linker hook, and becomes | |
316 | invalid as soon as the inferior is continued. Clients should make | |
317 | a copy of this string if they wish to continue the inferior and | |
318 | then access the string. */ | |
319 | ||
320 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
321 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
322 | #endif | |
323 | ||
324 | /* This function returns a pointer to the string representation of the | |
325 | pathname of the dynamically-linked library that has just been | |
326 | unloaded. | |
327 | ||
328 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
329 | TRUE, or undefined results are guaranteed. | |
330 | ||
331 | This string's contents are only valid immediately after the | |
332 | inferior has stopped in the dynamic linker hook, and becomes | |
333 | invalid as soon as the inferior is continued. Clients should make | |
334 | a copy of this string if they wish to continue the inferior and | |
335 | then access the string. */ | |
336 | ||
337 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
338 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
339 | #endif | |
340 | ||
341 | /* This function is called by the "catch load" command. It allows the | |
342 | debugger to be notified by the dynamic linker when a specified | |
343 | library file (or any library file, if filename is NULL) is loaded. */ | |
344 | ||
345 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
346 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 347 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
348 | #endif |
349 | ||
350 | /* This function is called by the "catch unload" command. It allows | |
351 | the debugger to be notified by the dynamic linker when a specified | |
352 | library file (or any library file, if filename is NULL) is | |
353 | unloaded. */ | |
354 | ||
355 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 356 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 357 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
358 | #endif |
359 | ||
468d015d JJ |
360 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
361 | static int | |
362 | breakpoint_enabled (struct breakpoint *b) | |
363 | { | |
0101ce28 | 364 | return (b->enable_state == bp_enabled && !b->pending); |
468d015d JJ |
365 | } |
366 | ||
c906108c SS |
367 | /* Set breakpoint count to NUM. */ |
368 | ||
369 | void | |
fba45db2 | 370 | set_breakpoint_count (int num) |
c906108c SS |
371 | { |
372 | breakpoint_count = num; | |
373 | set_internalvar (lookup_internalvar ("bpnum"), | |
374 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
375 | } | |
376 | ||
377 | /* Used in run_command to zero the hit count when a new run starts. */ | |
378 | ||
379 | void | |
fba45db2 | 380 | clear_breakpoint_hit_counts (void) |
c906108c SS |
381 | { |
382 | struct breakpoint *b; | |
383 | ||
384 | ALL_BREAKPOINTS (b) | |
385 | b->hit_count = 0; | |
386 | } | |
387 | ||
388 | /* Default address, symtab and line to put a breakpoint at | |
389 | for "break" command with no arg. | |
390 | if default_breakpoint_valid is zero, the other three are | |
391 | not valid, and "break" with no arg is an error. | |
392 | ||
393 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
394 | ||
395 | int default_breakpoint_valid; | |
396 | CORE_ADDR default_breakpoint_address; | |
397 | struct symtab *default_breakpoint_symtab; | |
398 | int default_breakpoint_line; | |
399 | \f | |
400 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
401 | Advance *PP after the string and any trailing whitespace. | |
402 | ||
403 | Currently the string can either be a number or "$" followed by the name | |
404 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 405 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
406 | |
407 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
408 | |
409 | TRAILER is a character which can be found after the number; most | |
410 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 411 | static int |
fba45db2 | 412 | get_number_trailer (char **pp, int trailer) |
c906108c | 413 | { |
5c44784c | 414 | int retval = 0; /* default */ |
c906108c SS |
415 | char *p = *pp; |
416 | ||
417 | if (p == NULL) | |
418 | /* Empty line means refer to the last breakpoint. */ | |
419 | return breakpoint_count; | |
420 | else if (*p == '$') | |
421 | { | |
422 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 423 | to pass to lookup_internalvar(). */ |
c906108c SS |
424 | char *varname; |
425 | char *start = ++p; | |
278cd55f | 426 | struct value *val; |
c906108c SS |
427 | |
428 | while (isalnum (*p) || *p == '_') | |
429 | p++; | |
430 | varname = (char *) alloca (p - start + 1); | |
431 | strncpy (varname, start, p - start); | |
432 | varname[p - start] = '\0'; | |
433 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 434 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
435 | retval = (int) value_as_long (val); |
436 | else | |
437 | { | |
a3f17187 | 438 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
439 | retval = 0; |
440 | } | |
c906108c SS |
441 | } |
442 | else | |
443 | { | |
444 | if (*p == '-') | |
445 | ++p; | |
446 | while (*p >= '0' && *p <= '9') | |
447 | ++p; | |
448 | if (p == *pp) | |
449 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
450 | { |
451 | /* Skip non-numeric token */ | |
452 | while (*p && !isspace((int) *p)) | |
453 | ++p; | |
454 | /* Return zero, which caller must interpret as error. */ | |
455 | retval = 0; | |
456 | } | |
457 | else | |
458 | retval = atoi (*pp); | |
459 | } | |
460 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
461 | { | |
462 | /* Trailing junk: return 0 and let caller print error msg. */ | |
463 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
464 | ++p; | |
465 | retval = 0; | |
c906108c | 466 | } |
c906108c SS |
467 | while (isspace (*p)) |
468 | p++; | |
469 | *pp = p; | |
470 | return retval; | |
471 | } | |
5c44784c | 472 | |
11cf8741 | 473 | |
5c44784c JM |
474 | /* Like get_number_trailer, but don't allow a trailer. */ |
475 | int | |
fba45db2 | 476 | get_number (char **pp) |
5c44784c JM |
477 | { |
478 | return get_number_trailer (pp, '\0'); | |
479 | } | |
480 | ||
481 | /* Parse a number or a range. | |
482 | * A number will be of the form handled by get_number. | |
483 | * A range will be of the form <number1> - <number2>, and | |
484 | * will represent all the integers between number1 and number2, | |
485 | * inclusive. | |
486 | * | |
487 | * While processing a range, this fuction is called iteratively; | |
488 | * At each call it will return the next value in the range. | |
489 | * | |
490 | * At the beginning of parsing a range, the char pointer PP will | |
491 | * be advanced past <number1> and left pointing at the '-' token. | |
492 | * Subsequent calls will not advance the pointer until the range | |
493 | * is completed. The call that completes the range will advance | |
494 | * pointer PP past <number2>. | |
495 | */ | |
496 | ||
497 | int | |
fba45db2 | 498 | get_number_or_range (char **pp) |
5c44784c JM |
499 | { |
500 | static int last_retval, end_value; | |
501 | static char *end_ptr; | |
502 | static int in_range = 0; | |
503 | ||
504 | if (**pp != '-') | |
505 | { | |
506 | /* Default case: pp is pointing either to a solo number, | |
507 | or to the first number of a range. */ | |
508 | last_retval = get_number_trailer (pp, '-'); | |
509 | if (**pp == '-') | |
510 | { | |
511 | char **temp; | |
512 | ||
513 | /* This is the start of a range (<number1> - <number2>). | |
514 | Skip the '-', parse and remember the second number, | |
515 | and also remember the end of the final token. */ | |
516 | ||
517 | temp = &end_ptr; | |
518 | end_ptr = *pp + 1; | |
519 | while (isspace ((int) *end_ptr)) | |
520 | end_ptr++; /* skip white space */ | |
521 | end_value = get_number (temp); | |
522 | if (end_value < last_retval) | |
523 | { | |
8a3fe4f8 | 524 | error (_("inverted range")); |
5c44784c JM |
525 | } |
526 | else if (end_value == last_retval) | |
527 | { | |
528 | /* degenerate range (number1 == number2). Advance the | |
529 | token pointer so that the range will be treated as a | |
530 | single number. */ | |
531 | *pp = end_ptr; | |
532 | } | |
533 | else | |
534 | in_range = 1; | |
535 | } | |
536 | } | |
537 | else if (! in_range) | |
8a3fe4f8 | 538 | error (_("negative value")); |
5c44784c JM |
539 | else |
540 | { | |
541 | /* pp points to the '-' that betokens a range. All | |
542 | number-parsing has already been done. Return the next | |
543 | integer value (one greater than the saved previous value). | |
544 | Do not advance the token pointer 'pp' until the end of range | |
545 | is reached. */ | |
546 | ||
547 | if (++last_retval == end_value) | |
548 | { | |
549 | /* End of range reached; advance token pointer. */ | |
550 | *pp = end_ptr; | |
551 | in_range = 0; | |
552 | } | |
553 | } | |
554 | return last_retval; | |
555 | } | |
556 | ||
557 | ||
c906108c SS |
558 | \f |
559 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
560 | ||
561 | static void | |
fba45db2 | 562 | condition_command (char *arg, int from_tty) |
c906108c | 563 | { |
52f0bd74 | 564 | struct breakpoint *b; |
c906108c | 565 | char *p; |
52f0bd74 | 566 | int bnum; |
c906108c SS |
567 | |
568 | if (arg == 0) | |
e2e0b3e5 | 569 | error_no_arg (_("breakpoint number")); |
c906108c SS |
570 | |
571 | p = arg; | |
572 | bnum = get_number (&p); | |
5c44784c | 573 | if (bnum == 0) |
8a3fe4f8 | 574 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
575 | |
576 | ALL_BREAKPOINTS (b) | |
577 | if (b->number == bnum) | |
c5aa993b JM |
578 | { |
579 | if (b->cond) | |
580 | { | |
b8c9b27d | 581 | xfree (b->cond); |
c5aa993b JM |
582 | b->cond = 0; |
583 | } | |
584 | if (b->cond_string != NULL) | |
b8c9b27d | 585 | xfree (b->cond_string); |
c906108c | 586 | |
c5aa993b JM |
587 | if (*p == 0) |
588 | { | |
589 | b->cond = 0; | |
590 | b->cond_string = NULL; | |
591 | if (from_tty) | |
a3f17187 | 592 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); |
c5aa993b JM |
593 | } |
594 | else | |
595 | { | |
596 | arg = p; | |
597 | /* I don't know if it matters whether this is the string the user | |
598 | typed in or the decompiled expression. */ | |
599 | b->cond_string = savestring (arg, strlen (arg)); | |
0101ce28 JJ |
600 | if (!b->pending) |
601 | { | |
602 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
603 | if (*arg) | |
8a3fe4f8 | 604 | error (_("Junk at end of expression")); |
0101ce28 | 605 | } |
c5aa993b JM |
606 | } |
607 | breakpoints_changed (); | |
221ea385 | 608 | breakpoint_modify_event (b->number); |
c5aa993b JM |
609 | return; |
610 | } | |
c906108c | 611 | |
8a3fe4f8 | 612 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
613 | } |
614 | ||
c906108c | 615 | static void |
fba45db2 | 616 | commands_command (char *arg, int from_tty) |
c906108c | 617 | { |
52f0bd74 | 618 | struct breakpoint *b; |
c906108c | 619 | char *p; |
52f0bd74 | 620 | int bnum; |
c906108c SS |
621 | struct command_line *l; |
622 | ||
623 | /* If we allowed this, we would have problems with when to | |
624 | free the storage, if we change the commands currently | |
625 | being read from. */ | |
626 | ||
627 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 628 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
629 | |
630 | p = arg; | |
631 | bnum = get_number (&p); | |
5c44784c | 632 | |
c906108c | 633 | if (p && *p) |
8a3fe4f8 | 634 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 635 | |
c906108c SS |
636 | ALL_BREAKPOINTS (b) |
637 | if (b->number == bnum) | |
9ebf4acf AC |
638 | { |
639 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
640 | bnum); | |
641 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
642 | l = read_command_lines (tmpbuf, from_tty); | |
643 | do_cleanups (cleanups); | |
644 | free_command_lines (&b->commands); | |
645 | b->commands = l; | |
646 | breakpoints_changed (); | |
647 | breakpoint_modify_event (b->number); | |
648 | return; | |
c5aa993b | 649 | } |
8a3fe4f8 | 650 | error (_("No breakpoint number %d."), bnum); |
c906108c | 651 | } |
40c03ae8 EZ |
652 | |
653 | /* Like commands_command, but instead of reading the commands from | |
654 | input stream, takes them from an already parsed command structure. | |
655 | ||
656 | This is used by cli-script.c to DTRT with breakpoint commands | |
657 | that are part of if and while bodies. */ | |
658 | enum command_control_type | |
659 | commands_from_control_command (char *arg, struct command_line *cmd) | |
660 | { | |
661 | struct breakpoint *b; | |
662 | char *p; | |
663 | int bnum; | |
664 | ||
665 | /* If we allowed this, we would have problems with when to | |
666 | free the storage, if we change the commands currently | |
667 | being read from. */ | |
668 | ||
669 | if (executing_breakpoint_commands) | |
670 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
671 | ||
672 | /* An empty string for the breakpoint number means the last | |
673 | breakpoint, but get_number expects a NULL pointer. */ | |
674 | if (arg && !*arg) | |
675 | p = NULL; | |
676 | else | |
677 | p = arg; | |
678 | bnum = get_number (&p); | |
679 | ||
680 | if (p && *p) | |
681 | error (_("Unexpected extra arguments following breakpoint number.")); | |
682 | ||
683 | ALL_BREAKPOINTS (b) | |
684 | if (b->number == bnum) | |
685 | { | |
686 | free_command_lines (&b->commands); | |
687 | if (cmd->body_count != 1) | |
688 | error (_("Invalid \"commands\" block structure.")); | |
689 | /* We need to copy the commands because if/while will free the | |
690 | list after it finishes execution. */ | |
691 | b->commands = copy_command_lines (cmd->body_list[0]); | |
692 | breakpoints_changed (); | |
693 | breakpoint_modify_event (b->number); | |
694 | return simple_control; | |
695 | } | |
696 | error (_("No breakpoint number %d."), bnum); | |
697 | } | |
c906108c SS |
698 | \f |
699 | /* Like target_read_memory() but if breakpoints are inserted, return | |
700 | the shadow contents instead of the breakpoints themselves. | |
701 | ||
702 | Read "memory data" from whatever target or inferior we have. | |
703 | Returns zero if successful, errno value if not. EIO is used | |
704 | for address out of bounds. If breakpoints are inserted, returns | |
705 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
706 | ||
707 | int | |
359a9262 | 708 | read_memory_nobpt (CORE_ADDR memaddr, gdb_byte *myaddr, unsigned len) |
c906108c SS |
709 | { |
710 | int status; | |
ffce0d52 | 711 | struct bp_location *b; |
c906108c SS |
712 | CORE_ADDR bp_addr = 0; |
713 | int bp_size = 0; | |
714 | ||
715 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
716 | /* No breakpoints on this machine. */ | |
717 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 718 | |
ffce0d52 | 719 | ALL_BP_LOCATIONS (b) |
c5aa993b | 720 | { |
ffce0d52 | 721 | if (b->owner->type == bp_none) |
8a3fe4f8 | 722 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
723 | b->owner->number); |
724 | ||
725 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 726 | continue; |
ffce0d52 | 727 | if (!b->inserted) |
c5aa993b JM |
728 | continue; |
729 | /* Addresses and length of the part of the breakpoint that | |
730 | we need to copy. */ | |
8181d85f DJ |
731 | bp_addr = b->target_info.placed_address; |
732 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 733 | if (bp_size == 0) |
8181d85f | 734 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b JM |
735 | continue; |
736 | if (bp_addr + bp_size <= memaddr) | |
737 | /* The breakpoint is entirely before the chunk of memory we | |
738 | are reading. */ | |
739 | continue; | |
740 | if (bp_addr >= memaddr + len) | |
741 | /* The breakpoint is entirely after the chunk of memory we are | |
742 | reading. */ | |
743 | continue; | |
744 | /* Copy the breakpoint from the shadow contents, and recurse for | |
745 | the things before and after. */ | |
c906108c | 746 | { |
c5aa993b JM |
747 | /* Offset within shadow_contents. */ |
748 | int bptoffset = 0; | |
c906108c | 749 | |
c5aa993b JM |
750 | if (bp_addr < memaddr) |
751 | { | |
752 | /* Only copy the second part of the breakpoint. */ | |
753 | bp_size -= memaddr - bp_addr; | |
754 | bptoffset = memaddr - bp_addr; | |
755 | bp_addr = memaddr; | |
756 | } | |
757 | ||
758 | if (bp_addr + bp_size > memaddr + len) | |
759 | { | |
760 | /* Only copy the first part of the breakpoint. */ | |
761 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
762 | } | |
763 | ||
764 | memcpy (myaddr + bp_addr - memaddr, | |
8181d85f | 765 | b->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b JM |
766 | |
767 | if (bp_addr > memaddr) | |
768 | { | |
769 | /* Copy the section of memory before the breakpoint. */ | |
359a9262 | 770 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); |
c5aa993b JM |
771 | if (status != 0) |
772 | return status; | |
773 | } | |
774 | ||
775 | if (bp_addr + bp_size < memaddr + len) | |
776 | { | |
777 | /* Copy the section of memory after the breakpoint. */ | |
359a9262 | 778 | status = read_memory_nobpt (bp_addr + bp_size, |
d85310f7 MS |
779 | myaddr + bp_addr + bp_size - memaddr, |
780 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
781 | if (status != 0) |
782 | return status; | |
783 | } | |
784 | return 0; | |
c906108c | 785 | } |
c5aa993b | 786 | } |
c906108c SS |
787 | /* Nothing overlaps. Just call read_memory_noerr. */ |
788 | return target_read_memory (memaddr, myaddr, len); | |
789 | } | |
c906108c | 790 | \f |
c5aa993b | 791 | |
687595f9 | 792 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 793 | static void |
687595f9 DJ |
794 | insert_catchpoint (struct ui_out *uo, void *args) |
795 | { | |
796 | struct breakpoint *b = (struct breakpoint *) args; | |
797 | int val = -1; | |
798 | ||
799 | switch (b->type) | |
800 | { | |
801 | case bp_catch_fork: | |
fa113d1a | 802 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
803 | break; |
804 | case bp_catch_vfork: | |
fa113d1a | 805 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
806 | break; |
807 | case bp_catch_exec: | |
fa113d1a | 808 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
809 | break; |
810 | default: | |
e2e0b3e5 | 811 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
812 | break; |
813 | } | |
687595f9 DJ |
814 | } |
815 | ||
7270d8f2 OF |
816 | /* Helper routine: free the value chain for a breakpoint (watchpoint). */ |
817 | ||
b40ce68a JB |
818 | static void |
819 | free_valchain (struct bp_location *b) | |
7270d8f2 OF |
820 | { |
821 | struct value *v; | |
822 | struct value *n; | |
823 | ||
824 | /* Free the saved value chain. We will construct a new one | |
825 | the next time the watchpoint is inserted. */ | |
826 | for (v = b->owner->val_chain; v; v = n) | |
827 | { | |
17cf0ecd | 828 | n = value_next (v); |
7270d8f2 OF |
829 | value_free (v); |
830 | } | |
831 | b->owner->val_chain = NULL; | |
832 | } | |
833 | ||
879bfdc2 DJ |
834 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
835 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
836 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
837 | ||
838 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
839 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 840 | static int |
879bfdc2 | 841 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
842 | struct ui_file *tmp_error_stream, |
843 | int *disabled_breaks, int *process_warning, | |
844 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
845 | { |
846 | int val = 0; | |
847 | ||
848 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
849 | breakpoints should not be inserted. */ | |
468d015d | 850 | if (!breakpoint_enabled (bpt->owner)) |
879bfdc2 DJ |
851 | return 0; |
852 | ||
853 | if (bpt->inserted || bpt->duplicate) | |
854 | return 0; | |
855 | ||
8181d85f DJ |
856 | /* Initialize the target-specific information. */ |
857 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
858 | bpt->target_info.placed_address = bpt->address; | |
859 | ||
879bfdc2 DJ |
860 | if (bpt->loc_type == bp_loc_software_breakpoint |
861 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
862 | { | |
765dc015 VP |
863 | if (bpt->owner->type != bp_hardware_breakpoint) |
864 | { | |
865 | /* If the explicitly specified breakpoint type | |
866 | is not hardware breakpoint, check the memory map to see | |
867 | if the breakpoint address is in read only memory or not. | |
868 | Two important cases are: | |
869 | - location type is not hardware breakpoint, memory | |
870 | is readonly. We change the type of the location to | |
871 | hardware breakpoint. | |
872 | - location type is hardware breakpoint, memory is read-write. | |
873 | This means we've previously made the location hardware one, but | |
874 | then the memory map changed, so we undo. | |
875 | ||
876 | When breakpoints are removed, remove_breakpoints will | |
877 | use location types we've just set here, the only possible | |
878 | problem is that memory map has changed during running program, | |
879 | but it's not going to work anyway with current gdb. */ | |
880 | struct mem_region *mr | |
881 | = lookup_mem_region (bpt->target_info.placed_address); | |
882 | ||
883 | if (mr) | |
884 | { | |
885 | if (automatic_hardware_breakpoints) | |
886 | { | |
887 | int changed = 0; | |
888 | enum bp_loc_type new_type; | |
889 | ||
890 | if (mr->attrib.mode != MEM_RW) | |
891 | new_type = bp_loc_hardware_breakpoint; | |
892 | else | |
893 | new_type = bp_loc_software_breakpoint; | |
894 | ||
895 | if (new_type != bpt->loc_type) | |
896 | { | |
897 | static int said = 0; | |
898 | bpt->loc_type = new_type; | |
899 | if (!said) | |
900 | { | |
901 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 902 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
903 | said = 1; |
904 | } | |
905 | } | |
906 | } | |
907 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
908 | && mr->attrib.mode != MEM_RW) | |
909 | warning (_("cannot set software breakpoint at readonly address %s"), | |
910 | paddr (bpt->address)); | |
911 | } | |
912 | } | |
913 | ||
879bfdc2 DJ |
914 | /* First check to see if we have to handle an overlay. */ |
915 | if (overlay_debugging == ovly_off | |
916 | || bpt->section == NULL | |
917 | || !(section_is_overlay (bpt->section))) | |
918 | { | |
919 | /* No overlay handling: just set the breakpoint. */ | |
920 | ||
921 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 922 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 923 | else |
8181d85f | 924 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
925 | } |
926 | else | |
927 | { | |
928 | /* This breakpoint is in an overlay section. | |
929 | Shall we set a breakpoint at the LMA? */ | |
930 | if (!overlay_events_enabled) | |
931 | { | |
932 | /* Yes -- overlay event support is not active, | |
933 | so we must try to set a breakpoint at the LMA. | |
934 | This will not work for a hardware breakpoint. */ | |
935 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 936 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
937 | bpt->owner->number); |
938 | else | |
939 | { | |
940 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
941 | bpt->section); | |
942 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
943 | bpt->overlay_target_info = bpt->target_info; |
944 | bpt->overlay_target_info.placed_address = addr; | |
945 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
946 | if (val != 0) |
947 | fprintf_unfiltered (tmp_error_stream, | |
948 | "Overlay breakpoint %d failed: in ROM?", | |
949 | bpt->owner->number); | |
950 | } | |
951 | } | |
952 | /* Shall we set a breakpoint at the VMA? */ | |
953 | if (section_is_mapped (bpt->section)) | |
954 | { | |
955 | /* Yes. This overlay section is mapped into memory. */ | |
956 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 957 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 958 | else |
8181d85f | 959 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
960 | } |
961 | else | |
962 | { | |
963 | /* No. This breakpoint will not be inserted. | |
964 | No error, but do not mark the bp as 'inserted'. */ | |
965 | return 0; | |
966 | } | |
967 | } | |
968 | ||
969 | if (val) | |
970 | { | |
971 | /* Can't set the breakpoint. */ | |
a77053c2 | 972 | if ( |
879bfdc2 | 973 | #if defined (DISABLE_UNSETTABLE_BREAK) |
a77053c2 MK |
974 | DISABLE_UNSETTABLE_BREAK (bpt->address) |
975 | #else | |
976 | solib_address (bpt->address) | |
977 | #endif | |
978 | ) | |
879bfdc2 DJ |
979 | { |
980 | /* See also: disable_breakpoints_in_shlibs. */ | |
981 | val = 0; | |
982 | bpt->owner->enable_state = bp_shlib_disabled; | |
983 | if (!*disabled_breaks) | |
984 | { | |
985 | fprintf_unfiltered (tmp_error_stream, | |
986 | "Cannot insert breakpoint %d.\n", | |
987 | bpt->owner->number); | |
988 | fprintf_unfiltered (tmp_error_stream, | |
989 | "Temporarily disabling shared library breakpoints:\n"); | |
990 | } | |
991 | *disabled_breaks = 1; | |
992 | fprintf_unfiltered (tmp_error_stream, | |
993 | "breakpoint #%d\n", bpt->owner->number); | |
994 | } | |
995 | else | |
879bfdc2 DJ |
996 | { |
997 | #ifdef ONE_PROCESS_WRITETEXT | |
998 | *process_warning = 1; | |
999 | #endif | |
1000 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1001 | { | |
1002 | *hw_breakpoint_error = 1; | |
1003 | fprintf_unfiltered (tmp_error_stream, | |
1004 | "Cannot insert hardware breakpoint %d.\n", | |
1005 | bpt->owner->number); | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | fprintf_unfiltered (tmp_error_stream, | |
1010 | "Cannot insert breakpoint %d.\n", | |
1011 | bpt->owner->number); | |
1012 | fprintf_filtered (tmp_error_stream, | |
1013 | "Error accessing memory address "); | |
66bf4b3a | 1014 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
1015 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1016 | safe_strerror (val)); | |
1017 | } | |
1018 | ||
1019 | } | |
1020 | } | |
1021 | else | |
1022 | bpt->inserted = 1; | |
1023 | ||
1024 | return val; | |
1025 | } | |
1026 | ||
1027 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1028 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1029 | watchpoints. It's not clear that it's necessary... */ | |
1030 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1031 | { | |
1032 | /* FIXME drow/2003-09-08: This code sets multiple hardware watchpoints | |
1033 | based on the expression. Ideally this should happen at a higher level, | |
1034 | and there should be one bp_location for each computed address we | |
1035 | must watch. As soon as a many-to-one mapping is available I'll | |
1036 | convert this. */ | |
1037 | ||
7789d0fa | 1038 | int within_current_scope; |
879bfdc2 DJ |
1039 | struct value *mark = value_mark (); |
1040 | struct value *v; | |
7789d0fa | 1041 | struct frame_id saved_frame_id; |
879bfdc2 | 1042 | |
7789d0fa | 1043 | /* Save the current frame's ID so we can restore it after |
879bfdc2 DJ |
1044 | evaluating the watchpoint expression on its own frame. */ |
1045 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1046 | took a frame parameter, so that we didn't have to change the | |
1047 | selected frame. */ | |
206415a3 | 1048 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
879bfdc2 DJ |
1049 | |
1050 | /* Determine if the watchpoint is within scope. */ | |
1051 | if (bpt->owner->exp_valid_block == NULL) | |
1052 | within_current_scope = 1; | |
1053 | else | |
1054 | { | |
1055 | struct frame_info *fi; | |
1056 | fi = frame_find_by_id (bpt->owner->watchpoint_frame); | |
1057 | within_current_scope = (fi != NULL); | |
1058 | if (within_current_scope) | |
1059 | select_frame (fi); | |
1060 | } | |
1061 | ||
1062 | if (within_current_scope) | |
1063 | { | |
7270d8f2 OF |
1064 | free_valchain (bpt); |
1065 | ||
879bfdc2 DJ |
1066 | /* Evaluate the expression and cut the chain of values |
1067 | produced off from the value chain. | |
1068 | ||
1069 | Make sure the value returned isn't lazy; we use | |
1070 | laziness to determine what memory GDB actually needed | |
1071 | in order to compute the value of the expression. */ | |
1072 | v = evaluate_expression (bpt->owner->exp); | |
0fd88904 | 1073 | value_contents (v); |
879bfdc2 DJ |
1074 | value_release_to_mark (mark); |
1075 | ||
1076 | bpt->owner->val_chain = v; | |
1077 | bpt->inserted = 1; | |
1078 | ||
1079 | /* Look at each value on the value chain. */ | |
17cf0ecd | 1080 | for (; v; v = value_next (v)) |
879bfdc2 DJ |
1081 | { |
1082 | /* If it's a memory location, and GDB actually needed | |
1083 | its contents to evaluate the expression, then we | |
1084 | must watch it. */ | |
1085 | if (VALUE_LVAL (v) == lval_memory | |
d69fe07e | 1086 | && ! value_lazy (v)) |
879bfdc2 | 1087 | { |
df407dfe | 1088 | struct type *vtype = check_typedef (value_type (v)); |
879bfdc2 DJ |
1089 | |
1090 | /* We only watch structs and arrays if user asked | |
1091 | for it explicitly, never if they just happen to | |
1092 | appear in the middle of some value chain. */ | |
1093 | if (v == bpt->owner->val_chain | |
1094 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1095 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1096 | { | |
1097 | CORE_ADDR addr; | |
1098 | int len, type; | |
1099 | ||
df407dfe AC |
1100 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1101 | len = TYPE_LENGTH (value_type (v)); | |
879bfdc2 DJ |
1102 | type = hw_write; |
1103 | if (bpt->owner->type == bp_read_watchpoint) | |
1104 | type = hw_read; | |
1105 | else if (bpt->owner->type == bp_access_watchpoint) | |
1106 | type = hw_access; | |
1107 | ||
1108 | val = target_insert_watchpoint (addr, len, type); | |
1109 | if (val == -1) | |
1110 | { | |
1111 | /* Don't exit the loop, try to insert | |
1112 | every value on the value chain. That's | |
1113 | because we will be removing all the | |
1114 | watches below, and removing a | |
1115 | watchpoint we didn't insert could have | |
1116 | adverse effects. */ | |
1117 | bpt->inserted = 0; | |
1118 | } | |
1119 | val = 0; | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | /* Failure to insert a watchpoint on any memory value in the | |
1124 | value chain brings us here. */ | |
1125 | if (!bpt->inserted) | |
1126 | { | |
0bde7532 | 1127 | remove_breakpoint (bpt, mark_uninserted); |
879bfdc2 DJ |
1128 | *hw_breakpoint_error = 1; |
1129 | fprintf_unfiltered (tmp_error_stream, | |
1130 | "Could not insert hardware watchpoint %d.\n", | |
1131 | bpt->owner->number); | |
1132 | val = -1; | |
1133 | } | |
1134 | } | |
1135 | else | |
1136 | { | |
a3f17187 AC |
1137 | printf_filtered (_("\ |
1138 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1139 | in which its expression is valid.\n"), | |
1140 | bpt->owner->number); | |
879bfdc2 DJ |
1141 | if (bpt->owner->related_breakpoint) |
1142 | bpt->owner->related_breakpoint->disposition = disp_del_at_next_stop; | |
1143 | bpt->owner->disposition = disp_del_at_next_stop; | |
1144 | } | |
1145 | ||
7789d0fa AC |
1146 | /* Restore the selected frame. */ |
1147 | select_frame (frame_find_by_id (saved_frame_id)); | |
879bfdc2 DJ |
1148 | |
1149 | return val; | |
1150 | } | |
1151 | ||
1152 | else if (ep_is_exception_catchpoint (bpt->owner)) | |
1153 | { | |
1154 | /* FIXME drow/2003-09-09: This code sets both a catchpoint and a | |
1155 | breakpoint. Once again, it would be better if this was represented | |
1156 | as two bp_locations. */ | |
1157 | ||
1158 | /* If we get here, we must have a callback mechanism for exception | |
1159 | events -- with g++ style embedded label support, we insert | |
1160 | ordinary breakpoints and not catchpoints. */ | |
8181d85f | 1161 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1162 | if (val) |
1163 | { | |
1164 | /* Couldn't set breakpoint for some reason */ | |
1165 | fprintf_unfiltered (tmp_error_stream, | |
1166 | "Cannot insert catchpoint %d; disabling it.\n", | |
1167 | bpt->owner->number); | |
1168 | fprintf_filtered (tmp_error_stream, | |
1169 | "Error accessing memory address "); | |
66bf4b3a | 1170 | deprecated_print_address_numeric (bpt->address, 1, tmp_error_stream); |
879bfdc2 DJ |
1171 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1172 | safe_strerror (val)); | |
1173 | bpt->owner->enable_state = bp_disabled; | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | /* Bp set, now make sure callbacks are enabled */ | |
1178 | /* Format possible error msg */ | |
1179 | char *message = xstrprintf ("Error inserting catchpoint %d:\n", | |
1180 | bpt->owner->number); | |
1181 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
1182 | int val; | |
1183 | args_for_catchpoint_enable args; | |
1184 | args.kind = bpt->owner->type == bp_catch_catch ? | |
1185 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
1186 | args.enable_p = 1; | |
1187 | val = catch_errors (cover_target_enable_exception_callback, | |
1188 | &args, message, RETURN_MASK_ALL); | |
1189 | do_cleanups (cleanups); | |
1190 | if (val != 0 && val != -1) | |
1191 | bpt->inserted = 1; | |
1192 | ||
1193 | /* Check if something went wrong; val == 0 can be ignored */ | |
1194 | if (val == -1) | |
1195 | { | |
1196 | /* something went wrong */ | |
1197 | fprintf_unfiltered (tmp_error_stream, | |
1198 | "Cannot insert catchpoint %d; disabling it.\n", | |
1199 | bpt->owner->number); | |
1200 | bpt->owner->enable_state = bp_disabled; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | return val; | |
1205 | } | |
1206 | ||
1207 | else if (bpt->owner->type == bp_catch_fork | |
1208 | || bpt->owner->type == bp_catch_vfork | |
1209 | || bpt->owner->type == bp_catch_exec) | |
1210 | { | |
71fff37b AC |
1211 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1212 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1213 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1214 | bpt->owner->number); | |
1215 | if (e.reason < 0) | |
879bfdc2 DJ |
1216 | bpt->owner->enable_state = bp_disabled; |
1217 | else | |
1218 | bpt->inserted = 1; | |
1640b821 DJ |
1219 | |
1220 | /* We've already printed an error message if there was a problem | |
1221 | inserting this catchpoint, and we've disabled the catchpoint, | |
1222 | so just return success. */ | |
1223 | return 0; | |
879bfdc2 DJ |
1224 | } |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
c906108c SS |
1229 | /* insert_breakpoints is used when starting or continuing the program. |
1230 | remove_breakpoints is used when the program stops. | |
1231 | Both return zero if successful, | |
1232 | or an `errno' value if could not write the inferior. */ | |
1233 | ||
1234 | int | |
fba45db2 | 1235 | insert_breakpoints (void) |
c906108c | 1236 | { |
879bfdc2 | 1237 | struct bp_location *b, *temp; |
53a5351d | 1238 | int return_val = 0; /* return success code. */ |
c906108c SS |
1239 | int val = 0; |
1240 | int disabled_breaks = 0; | |
81d0cc19 GS |
1241 | int hw_breakpoint_error = 0; |
1242 | int process_warning = 0; | |
c906108c | 1243 | |
81d0cc19 GS |
1244 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1245 | make_cleanup_ui_file_delete (tmp_error_stream); | |
1246 | ||
1247 | /* Explicitly mark the warning -- this will only be printed if | |
1248 | there was an error. */ | |
1249 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
c906108c | 1250 | |
879bfdc2 DJ |
1251 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1252 | { | |
1253 | /* Permanent breakpoints cannot be inserted or removed. Disabled | |
1254 | breakpoints should not be inserted. */ | |
468d015d | 1255 | if (!breakpoint_enabled (b->owner)) |
879bfdc2 DJ |
1256 | continue; |
1257 | ||
f365de73 AS |
1258 | /* There is no point inserting thread-specific breakpoints if the |
1259 | thread no longer exists. */ | |
1260 | if (b->owner->thread != -1 | |
1261 | && !valid_thread_id (b->owner->thread)) | |
1262 | continue; | |
1263 | ||
879bfdc2 DJ |
1264 | /* FIXME drow/2003-10-07: This code should be pushed elsewhere when |
1265 | hardware watchpoints are split into multiple loc breakpoints. */ | |
1266 | if ((b->loc_type == bp_loc_hardware_watchpoint | |
1267 | || b->owner->type == bp_watchpoint) && !b->owner->val) | |
1268 | { | |
1269 | struct value *val; | |
1270 | val = evaluate_expression (b->owner->exp); | |
1271 | release_value (val); | |
d69fe07e | 1272 | if (value_lazy (val)) |
879bfdc2 DJ |
1273 | value_fetch_lazy (val); |
1274 | b->owner->val = val; | |
1275 | } | |
a881cf8e | 1276 | |
879bfdc2 DJ |
1277 | val = insert_bp_location (b, tmp_error_stream, |
1278 | &disabled_breaks, &process_warning, | |
1279 | &hw_breakpoint_error); | |
1280 | if (val) | |
1281 | return_val = val; | |
1282 | } | |
c906108c | 1283 | |
879bfdc2 | 1284 | if (return_val) |
81d0cc19 GS |
1285 | { |
1286 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1287 | message about possibly exhausted resources. */ | |
879bfdc2 | 1288 | if (hw_breakpoint_error) |
81d0cc19 | 1289 | { |
c6510018 MS |
1290 | fprintf_unfiltered (tmp_error_stream, |
1291 | "Could not insert hardware breakpoints:\n\ | |
1292 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1293 | } |
c6510018 | 1294 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1295 | if (process_warning) |
c6510018 MS |
1296 | fprintf_unfiltered (tmp_error_stream, |
1297 | "The same program may be running in another process."); | |
1298 | #endif | |
81d0cc19 GS |
1299 | target_terminal_ours_for_output (); |
1300 | error_stream (tmp_error_stream); | |
1301 | } | |
53a5351d | 1302 | return return_val; |
c906108c SS |
1303 | } |
1304 | ||
c906108c | 1305 | int |
fba45db2 | 1306 | remove_breakpoints (void) |
c906108c | 1307 | { |
0bde7532 | 1308 | struct bp_location *b; |
c906108c SS |
1309 | int val; |
1310 | ||
0bde7532 | 1311 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1312 | { |
0bde7532 | 1313 | if (b->inserted) |
c5aa993b JM |
1314 | { |
1315 | val = remove_breakpoint (b, mark_uninserted); | |
1316 | if (val != 0) | |
1317 | return val; | |
1318 | } | |
1319 | } | |
c906108c SS |
1320 | return 0; |
1321 | } | |
1322 | ||
692590c1 | 1323 | int |
80ce1ecb | 1324 | remove_hw_watchpoints (void) |
692590c1 | 1325 | { |
0bde7532 | 1326 | struct bp_location *b; |
692590c1 MS |
1327 | int val; |
1328 | ||
0bde7532 | 1329 | ALL_BP_LOCATIONS (b) |
692590c1 | 1330 | { |
0bde7532 | 1331 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1332 | { |
1333 | val = remove_breakpoint (b, mark_uninserted); | |
1334 | if (val != 0) | |
1335 | return val; | |
1336 | } | |
1337 | } | |
1338 | return 0; | |
1339 | } | |
1340 | ||
c906108c | 1341 | int |
fba45db2 | 1342 | reattach_breakpoints (int pid) |
c906108c | 1343 | { |
0bde7532 | 1344 | struct bp_location *b; |
c906108c | 1345 | int val; |
ce696e05 | 1346 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1347 | |
ce696e05 KB |
1348 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1349 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1350 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1351 | { |
0bde7532 | 1352 | if (b->inserted) |
c5aa993b JM |
1353 | { |
1354 | remove_breakpoint (b, mark_inserted); | |
765dc015 VP |
1355 | /* Note: since we insert a breakpoint right after removing, |
1356 | any decisions about automatically using hardware breakpoints | |
1357 | made in insert_bp_location are preserved. */ | |
0bde7532 | 1358 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1359 | val = target_insert_hw_breakpoint (&b->target_info); |
c5aa993b | 1360 | else |
8181d85f | 1361 | val = target_insert_breakpoint (&b->target_info); |
0bde7532 DJ |
1362 | /* FIXME drow/2003-10-07: This doesn't handle any other kinds of |
1363 | breakpoints. It's wrong for watchpoints, for example. */ | |
c5aa993b JM |
1364 | if (val != 0) |
1365 | { | |
ce696e05 | 1366 | do_cleanups (old_chain); |
c5aa993b JM |
1367 | return val; |
1368 | } | |
1369 | } | |
1370 | } | |
ce696e05 | 1371 | do_cleanups (old_chain); |
c906108c SS |
1372 | return 0; |
1373 | } | |
1374 | ||
1375 | void | |
fba45db2 | 1376 | update_breakpoints_after_exec (void) |
c906108c | 1377 | { |
c5aa993b JM |
1378 | struct breakpoint *b; |
1379 | struct breakpoint *temp; | |
c906108c SS |
1380 | |
1381 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1382 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1383 | shadow is NOT valid after an exec()! */ | |
1384 | mark_breakpoints_out (); | |
1385 | ||
1386 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1387 | { |
1388 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1389 | if (b->type == bp_shlib_event) | |
1390 | { | |
1391 | delete_breakpoint (b); | |
1392 | continue; | |
1393 | } | |
c906108c | 1394 | |
1900040c MS |
1395 | /* Thread event breakpoints must be set anew after an exec(), |
1396 | as must overlay event breakpoints. */ | |
1397 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1398 | { |
1399 | delete_breakpoint (b); | |
1400 | continue; | |
1401 | } | |
1402 | ||
c5aa993b JM |
1403 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1404 | if (b->type == bp_step_resume) | |
1405 | { | |
1406 | delete_breakpoint (b); | |
1407 | continue; | |
1408 | } | |
1409 | ||
1410 | /* Ditto the sigtramp handler breakpoints. */ | |
1411 | if (b->type == bp_through_sigtramp) | |
1412 | { | |
1413 | delete_breakpoint (b); | |
1414 | continue; | |
1415 | } | |
1416 | ||
1417 | /* Ditto the exception-handling catchpoints. */ | |
1418 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1419 | { | |
1420 | delete_breakpoint (b); | |
1421 | continue; | |
1422 | } | |
1423 | ||
1424 | /* Don't delete an exec catchpoint, because else the inferior | |
1425 | won't stop when it ought! | |
1426 | ||
1427 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1428 | on this target, we may not be able to stop when the vfork is |
1429 | seen, but only when the subsequent exec is seen. (And because | |
1430 | deleting fork catchpoints here but not vfork catchpoints will | |
1431 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1432 | |
1433 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1434 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1435 | automagically. Certainly on HP-UX that's true. |
1436 | ||
1437 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
41989fcd AC |
1438 | valid code address on some platforms (like the mn10300 |
1439 | simulators). We shouldn't assign any special interpretation to | |
1440 | a breakpoint with a zero address. And in fact, GDB doesn't --- | |
1441 | I can't see what that comment above is talking about. As far | |
1442 | as I can tell, setting the address of a | |
644a1fe1 JB |
1443 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero |
1444 | is meaningless, since those are implemented with HP-UX kernel | |
1445 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1446 | if ((b->type == bp_catch_exec) || |
1447 | (b->type == bp_catch_vfork) || | |
1448 | (b->type == bp_catch_fork)) | |
1449 | { | |
67985547 | 1450 | b->loc->address = (CORE_ADDR) 0; |
c5aa993b JM |
1451 | continue; |
1452 | } | |
1453 | ||
1454 | /* bp_finish is a special case. The only way we ought to be able | |
1455 | to see one of these when an exec() has happened, is if the user | |
1456 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1457 | carries them to the call-site of the current callee, by setting | |
1458 | a temporary bp there and resuming. But in this case, the finish | |
1459 | will carry them entirely through the vfork & exec. | |
1460 | ||
1461 | We don't want to allow a bp_finish to remain inserted now. But | |
1462 | we can't safely delete it, 'cause finish_command has a handle to | |
1463 | the bp on a bpstat, and will later want to delete it. There's a | |
1464 | chance (and I've seen it happen) that if we delete the bp_finish | |
1465 | here, that its storage will get reused by the time finish_command | |
1466 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1467 | We really must allow finish_command to delete a bp_finish. | |
1468 | ||
53a5351d JM |
1469 | In the absense of a general solution for the "how do we know |
1470 | it's safe to delete something others may have handles to?" | |
1471 | problem, what we'll do here is just uninsert the bp_finish, and | |
1472 | let finish_command delete it. | |
1473 | ||
1474 | (We know the bp_finish is "doomed" in the sense that it's | |
1475 | momentary, and will be deleted as soon as finish_command sees | |
1476 | the inferior stopped. So it doesn't matter that the bp's | |
1477 | address is probably bogus in the new a.out, unlike e.g., the | |
1478 | solib breakpoints.) */ | |
c5aa993b | 1479 | |
c5aa993b JM |
1480 | if (b->type == bp_finish) |
1481 | { | |
1482 | continue; | |
1483 | } | |
1484 | ||
1485 | /* Without a symbolic address, we have little hope of the | |
1486 | pre-exec() address meaning the same thing in the post-exec() | |
1487 | a.out. */ | |
1488 | if (b->addr_string == NULL) | |
1489 | { | |
1490 | delete_breakpoint (b); | |
1491 | continue; | |
1492 | } | |
1493 | ||
1494 | /* If this breakpoint has survived the above battery of checks, then | |
1495 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1496 | to a target address, rather than reusing the old evaluation. |
1497 | ||
1498 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1499 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1500 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1501 | the breakpoint's address from scratch, or deletes it if it can't. | |
1502 | So I think this assignment could be deleted without effect. */ | |
67985547 | 1503 | b->loc->address = (CORE_ADDR) 0; |
c5aa993b | 1504 | } |
1900040c MS |
1505 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1506 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1507 | } |
1508 | ||
1509 | int | |
fba45db2 | 1510 | detach_breakpoints (int pid) |
c906108c | 1511 | { |
0bde7532 | 1512 | struct bp_location *b; |
c906108c | 1513 | int val; |
ce696e05 | 1514 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1515 | |
39f77062 | 1516 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1517 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1518 | |
ce696e05 KB |
1519 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1520 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1521 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1522 | { |
0bde7532 | 1523 | if (b->inserted) |
c5aa993b JM |
1524 | { |
1525 | val = remove_breakpoint (b, mark_inserted); | |
1526 | if (val != 0) | |
1527 | { | |
ce696e05 | 1528 | do_cleanups (old_chain); |
c5aa993b JM |
1529 | return val; |
1530 | } | |
1531 | } | |
1532 | } | |
ce696e05 | 1533 | do_cleanups (old_chain); |
c906108c SS |
1534 | return 0; |
1535 | } | |
1536 | ||
1537 | static int | |
0bde7532 | 1538 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1539 | { |
1540 | int val; | |
c5aa993b | 1541 | |
0bde7532 | 1542 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1543 | /* Permanent breakpoints cannot be inserted or removed. */ |
1544 | return 0; | |
1545 | ||
0bde7532 | 1546 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1547 | warning (_("attempted to remove apparently deleted breakpoint #%d?"), |
0bde7532 DJ |
1548 | b->owner->number); |
1549 | ||
1550 | if (b->loc_type == bp_loc_software_breakpoint | |
1551 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1552 | { |
c02f5703 MS |
1553 | /* "Normal" instruction breakpoint: either the standard |
1554 | trap-instruction bp (bp_breakpoint), or a | |
1555 | bp_hardware_breakpoint. */ | |
1556 | ||
1557 | /* First check to see if we have to handle an overlay. */ | |
1558 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1559 | || b->section == NULL |
1560 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1561 | { |
1562 | /* No overlay handling: just remove the breakpoint. */ | |
1563 | ||
0bde7532 | 1564 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1565 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1566 | else |
8181d85f | 1567 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1568 | } |
c906108c SS |
1569 | else |
1570 | { | |
c02f5703 MS |
1571 | /* This breakpoint is in an overlay section. |
1572 | Did we set a breakpoint at the LMA? */ | |
1573 | if (!overlay_events_enabled) | |
1574 | { | |
1575 | /* Yes -- overlay event support is not active, so we | |
1576 | should have set a breakpoint at the LMA. Remove it. | |
1577 | */ | |
c02f5703 MS |
1578 | /* Ignore any failures: if the LMA is in ROM, we will |
1579 | have already warned when we failed to insert it. */ | |
0bde7532 | 1580 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1581 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1582 | else |
8181d85f | 1583 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1584 | } |
1585 | /* Did we set a breakpoint at the VMA? | |
1586 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1587 | if (b->inserted) |
c906108c | 1588 | { |
c02f5703 MS |
1589 | /* Yes -- remove it. Previously we did not bother to |
1590 | remove the breakpoint if the section had been | |
1591 | unmapped, but let's not rely on that being safe. We | |
1592 | don't know what the overlay manager might do. */ | |
0bde7532 | 1593 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1594 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1595 | else |
8181d85f | 1596 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1597 | } |
c02f5703 MS |
1598 | else |
1599 | { | |
1600 | /* No -- not inserted, so no need to remove. No error. */ | |
1601 | val = 0; | |
1602 | } | |
c906108c SS |
1603 | } |
1604 | if (val) | |
1605 | return val; | |
0bde7532 | 1606 | b->inserted = (is == mark_inserted); |
c906108c | 1607 | } |
0bde7532 | 1608 | else if (b->loc_type == bp_loc_hardware_watchpoint |
468d015d | 1609 | && breakpoint_enabled (b->owner) |
0bde7532 | 1610 | && !b->duplicate) |
c906108c | 1611 | { |
278cd55f AC |
1612 | struct value *v; |
1613 | struct value *n; | |
c5aa993b | 1614 | |
0bde7532 | 1615 | b->inserted = (is == mark_inserted); |
c906108c | 1616 | /* Walk down the saved value chain. */ |
17cf0ecd | 1617 | for (v = b->owner->val_chain; v; v = value_next (v)) |
c906108c SS |
1618 | { |
1619 | /* For each memory reference remove the watchpoint | |
1620 | at that address. */ | |
5c44784c | 1621 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 1622 | && ! value_lazy (v)) |
c906108c | 1623 | { |
df407dfe | 1624 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 | 1625 | |
0bde7532 | 1626 | if (v == b->owner->val_chain |
2e70b7b9 MS |
1627 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1628 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1629 | { | |
1630 | CORE_ADDR addr; | |
1631 | int len, type; | |
1632 | ||
df407dfe AC |
1633 | addr = VALUE_ADDRESS (v) + value_offset (v); |
1634 | len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 1635 | type = hw_write; |
0bde7532 | 1636 | if (b->owner->type == bp_read_watchpoint) |
2e70b7b9 | 1637 | type = hw_read; |
0bde7532 | 1638 | else if (b->owner->type == bp_access_watchpoint) |
2e70b7b9 MS |
1639 | type = hw_access; |
1640 | ||
1641 | val = target_remove_watchpoint (addr, len, type); | |
1642 | if (val == -1) | |
0bde7532 | 1643 | b->inserted = 1; |
2e70b7b9 MS |
1644 | val = 0; |
1645 | } | |
c906108c SS |
1646 | } |
1647 | } | |
1648 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
0bde7532 | 1649 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1650 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1651 | b->owner->number); |
c906108c | 1652 | } |
0bde7532 DJ |
1653 | else if ((b->owner->type == bp_catch_fork || |
1654 | b->owner->type == bp_catch_vfork || | |
1655 | b->owner->type == bp_catch_exec) | |
468d015d | 1656 | && breakpoint_enabled (b->owner) |
0bde7532 | 1657 | && !b->duplicate) |
c906108c SS |
1658 | { |
1659 | val = -1; | |
0bde7532 | 1660 | switch (b->owner->type) |
c5aa993b JM |
1661 | { |
1662 | case bp_catch_fork: | |
39f77062 | 1663 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1664 | break; |
1665 | case bp_catch_vfork: | |
39f77062 | 1666 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1667 | break; |
1668 | case bp_catch_exec: | |
39f77062 | 1669 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1670 | break; |
ac9a91a7 | 1671 | default: |
8a3fe4f8 | 1672 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1673 | break; |
c5aa993b | 1674 | } |
c906108c SS |
1675 | if (val) |
1676 | return val; | |
0bde7532 | 1677 | b->inserted = (is == mark_inserted); |
c906108c | 1678 | } |
0bde7532 DJ |
1679 | else if ((b->owner->type == bp_catch_catch || |
1680 | b->owner->type == bp_catch_throw) | |
468d015d | 1681 | && breakpoint_enabled (b->owner) |
0bde7532 | 1682 | && !b->duplicate) |
c906108c | 1683 | { |
8181d85f | 1684 | val = target_remove_breakpoint (&b->target_info); |
c906108c | 1685 | if (val) |
c5aa993b | 1686 | return val; |
0bde7532 | 1687 | b->inserted = (is == mark_inserted); |
c906108c | 1688 | } |
c906108c SS |
1689 | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | /* Clear the "inserted" flag in all breakpoints. */ | |
1694 | ||
1695 | void | |
fba45db2 | 1696 | mark_breakpoints_out (void) |
c906108c | 1697 | { |
075f6582 | 1698 | struct bp_location *bpt; |
c906108c | 1699 | |
075f6582 DJ |
1700 | ALL_BP_LOCATIONS (bpt) |
1701 | bpt->inserted = 0; | |
c906108c SS |
1702 | } |
1703 | ||
53a5351d JM |
1704 | /* Clear the "inserted" flag in all breakpoints and delete any |
1705 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1706 | |
1707 | Plus other such housekeeping that has to be done for breakpoints | |
1708 | between runs. | |
1709 | ||
53a5351d JM |
1710 | Note: this function gets called at the end of a run (by |
1711 | generic_mourn_inferior) and when a run begins (by | |
1712 | init_wait_for_inferior). */ | |
c906108c SS |
1713 | |
1714 | ||
1715 | ||
1716 | void | |
fba45db2 | 1717 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1718 | { |
52f0bd74 | 1719 | struct breakpoint *b, *temp; |
075f6582 | 1720 | struct bp_location *bpt; |
c906108c SS |
1721 | static int warning_needed = 0; |
1722 | ||
075f6582 DJ |
1723 | ALL_BP_LOCATIONS (bpt) |
1724 | bpt->inserted = 0; | |
1725 | ||
c906108c | 1726 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1727 | { |
c5aa993b JM |
1728 | switch (b->type) |
1729 | { | |
1730 | case bp_call_dummy: | |
1731 | case bp_watchpoint_scope: | |
c906108c | 1732 | |
c5aa993b JM |
1733 | /* If the call dummy breakpoint is at the entry point it will |
1734 | cause problems when the inferior is rerun, so we better | |
1735 | get rid of it. | |
c906108c | 1736 | |
c5aa993b JM |
1737 | Also get rid of scope breakpoints. */ |
1738 | delete_breakpoint (b); | |
1739 | break; | |
c906108c | 1740 | |
c5aa993b JM |
1741 | case bp_watchpoint: |
1742 | case bp_hardware_watchpoint: | |
1743 | case bp_read_watchpoint: | |
1744 | case bp_access_watchpoint: | |
c906108c | 1745 | |
c5aa993b JM |
1746 | /* Likewise for watchpoints on local expressions. */ |
1747 | if (b->exp_valid_block != NULL) | |
1748 | delete_breakpoint (b); | |
c860120c PM |
1749 | if (context == inf_starting) |
1750 | { | |
1751 | /* Reset val field to force reread of starting value | |
1752 | in insert_breakpoints. */ | |
1753 | if (b->val) | |
1754 | value_free (b->val); | |
1755 | b->val = NULL; | |
1756 | } | |
c5aa993b JM |
1757 | break; |
1758 | default: | |
1759 | /* Likewise for exception catchpoints in dynamic-linked | |
1760 | executables where required */ | |
f83f82bc AC |
1761 | if (ep_is_exception_catchpoint (b) |
1762 | && deprecated_exception_catchpoints_are_fragile) | |
c5aa993b JM |
1763 | { |
1764 | warning_needed = 1; | |
c906108c | 1765 | delete_breakpoint (b); |
c5aa993b JM |
1766 | } |
1767 | break; | |
1768 | } | |
1769 | } | |
c906108c | 1770 | |
f83f82bc AC |
1771 | if (deprecated_exception_catchpoints_are_fragile) |
1772 | deprecated_exception_support_initialized = 0; | |
c906108c | 1773 | |
c5aa993b | 1774 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1775 | if (warning_needed && (context != inf_exited)) |
1776 | { | |
8a3fe4f8 AC |
1777 | warning (_("Exception catchpoints from last run were deleted.\n" |
1778 | "You must reinsert them explicitly.")); | |
c906108c | 1779 | warning_needed = 0; |
c5aa993b | 1780 | } |
c906108c SS |
1781 | } |
1782 | ||
c2c6d25f JM |
1783 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1784 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1785 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1786 | permanent breakpoint. | |
1787 | - When continuing from a location with an ordinary breakpoint, we | |
1788 | actually single step once before calling insert_breakpoints. | |
1789 | - When continuing from a localion with a permanent breakpoint, we | |
1790 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1791 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1792 | |
c2c6d25f | 1793 | enum breakpoint_here |
fba45db2 | 1794 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1795 | { |
075f6582 | 1796 | struct bp_location *bpt; |
c2c6d25f | 1797 | int any_breakpoint_here = 0; |
c906108c | 1798 | |
075f6582 DJ |
1799 | ALL_BP_LOCATIONS (bpt) |
1800 | { | |
1801 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1802 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1803 | continue; | |
1804 | ||
468d015d | 1805 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1806 | || bpt->owner->enable_state == bp_permanent) |
1807 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1808 | { | |
1809 | if (overlay_debugging | |
1810 | && section_is_overlay (bpt->section) | |
1811 | && !section_is_mapped (bpt->section)) | |
1812 | continue; /* unmapped overlay -- can't be a match */ | |
1813 | else if (bpt->owner->enable_state == bp_permanent) | |
1814 | return permanent_breakpoint_here; | |
1815 | else | |
1816 | any_breakpoint_here = 1; | |
1817 | } | |
1818 | } | |
c906108c | 1819 | |
c2c6d25f | 1820 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1821 | } |
1822 | ||
c2c6d25f | 1823 | |
53a5351d JM |
1824 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1825 | but it only returns true if there is actually a breakpoint inserted | |
1826 | at PC. */ | |
c906108c SS |
1827 | |
1828 | int | |
fba45db2 | 1829 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1830 | { |
075f6582 | 1831 | struct bp_location *bpt; |
c906108c | 1832 | |
075f6582 | 1833 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1834 | { |
075f6582 DJ |
1835 | if (bpt->loc_type != bp_loc_software_breakpoint |
1836 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1837 | continue; | |
1838 | ||
1839 | if (bpt->inserted | |
1840 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1841 | { | |
1842 | if (overlay_debugging | |
1843 | && section_is_overlay (bpt->section) | |
1844 | && !section_is_mapped (bpt->section)) | |
1845 | continue; /* unmapped overlay -- can't be a match */ | |
1846 | else | |
1847 | return 1; | |
1848 | } | |
c5aa993b | 1849 | } |
c906108c SS |
1850 | |
1851 | return 0; | |
1852 | } | |
1853 | ||
4fa8626c DJ |
1854 | /* This function returns non-zero iff there is a software breakpoint |
1855 | inserted at PC. */ | |
1856 | ||
1857 | int | |
1858 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1859 | { | |
1860 | struct bp_location *bpt; | |
1861 | int any_breakpoint_here = 0; | |
1862 | ||
1863 | ALL_BP_LOCATIONS (bpt) | |
1864 | { | |
1865 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1866 | continue; | |
1867 | ||
1868 | if ((breakpoint_enabled (bpt->owner) | |
1869 | || bpt->owner->enable_state == bp_permanent) | |
1870 | && bpt->inserted | |
1871 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1872 | { | |
1873 | if (overlay_debugging | |
1874 | && section_is_overlay (bpt->section) | |
1875 | && !section_is_mapped (bpt->section)) | |
1876 | continue; /* unmapped overlay -- can't be a match */ | |
1877 | else | |
1878 | return 1; | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | return 0; | |
1883 | } | |
1884 | ||
075f6582 DJ |
1885 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1886 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1887 | |
1888 | int | |
39f77062 | 1889 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1890 | { |
075f6582 | 1891 | struct bp_location *bpt; |
c906108c SS |
1892 | int thread; |
1893 | ||
39f77062 | 1894 | thread = pid_to_thread_id (ptid); |
c906108c | 1895 | |
075f6582 | 1896 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1897 | { |
075f6582 DJ |
1898 | if (bpt->loc_type != bp_loc_software_breakpoint |
1899 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1900 | continue; | |
1901 | ||
468d015d | 1902 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1903 | || bpt->owner->enable_state == bp_permanent) |
1904 | && bpt->address == pc | |
1905 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1906 | { | |
1907 | if (overlay_debugging | |
1908 | && section_is_overlay (bpt->section) | |
1909 | && !section_is_mapped (bpt->section)) | |
1910 | continue; /* unmapped overlay -- can't be a match */ | |
1911 | else | |
1912 | return 1; | |
1913 | } | |
c5aa993b | 1914 | } |
c906108c SS |
1915 | |
1916 | return 0; | |
1917 | } | |
c906108c | 1918 | \f |
c5aa993b | 1919 | |
c906108c SS |
1920 | /* bpstat stuff. External routines' interfaces are documented |
1921 | in breakpoint.h. */ | |
1922 | ||
1923 | int | |
fba45db2 | 1924 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1925 | { |
1926 | return | |
1927 | (ep->type == bp_catch_load) | |
1928 | || (ep->type == bp_catch_unload) | |
1929 | || (ep->type == bp_catch_fork) | |
1930 | || (ep->type == bp_catch_vfork) | |
1931 | || (ep->type == bp_catch_exec) | |
1932 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1933 | || (ep->type == bp_catch_throw); |
c906108c | 1934 | |
c5aa993b | 1935 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1936 | } |
c5aa993b | 1937 | |
c906108c | 1938 | int |
fba45db2 | 1939 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1940 | { |
1941 | return | |
1942 | (ep->type == bp_catch_load) | |
d85310f7 | 1943 | || (ep->type == bp_catch_unload); |
c906108c SS |
1944 | } |
1945 | ||
1946 | int | |
fba45db2 | 1947 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1948 | { |
1949 | return | |
1950 | (ep->type == bp_catch_catch) | |
d85310f7 | 1951 | || (ep->type == bp_catch_throw); |
c906108c SS |
1952 | } |
1953 | ||
1954 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1955 | Also free any storage that is part of a bpstat. */ | |
1956 | ||
1957 | void | |
fba45db2 | 1958 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1959 | { |
1960 | bpstat p; | |
1961 | bpstat q; | |
1962 | ||
1963 | if (bsp == 0) | |
1964 | return; | |
1965 | p = *bsp; | |
1966 | while (p != NULL) | |
1967 | { | |
1968 | q = p->next; | |
1969 | if (p->old_val != NULL) | |
1970 | value_free (p->old_val); | |
c2b8ed2c | 1971 | free_command_lines (&p->commands); |
b8c9b27d | 1972 | xfree (p); |
c906108c SS |
1973 | p = q; |
1974 | } | |
1975 | *bsp = NULL; | |
1976 | } | |
1977 | ||
1978 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1979 | is part of the bpstat is copied as well. */ | |
1980 | ||
1981 | bpstat | |
fba45db2 | 1982 | bpstat_copy (bpstat bs) |
c906108c SS |
1983 | { |
1984 | bpstat p = NULL; | |
1985 | bpstat tmp; | |
1986 | bpstat retval = NULL; | |
1987 | ||
1988 | if (bs == NULL) | |
1989 | return bs; | |
1990 | ||
1991 | for (; bs != NULL; bs = bs->next) | |
1992 | { | |
1993 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1994 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1995 | if (bs->commands != NULL) |
1996 | tmp->commands = copy_command_lines (bs->commands); | |
1997 | if (bs->old_val != NULL) | |
1998 | tmp->old_val = value_copy (bs->old_val); | |
1999 | ||
c906108c SS |
2000 | if (p == NULL) |
2001 | /* This is the first thing in the chain. */ | |
2002 | retval = tmp; | |
2003 | else | |
2004 | p->next = tmp; | |
2005 | p = tmp; | |
2006 | } | |
2007 | p->next = NULL; | |
2008 | return retval; | |
2009 | } | |
2010 | ||
2011 | /* Find the bpstat associated with this breakpoint */ | |
2012 | ||
2013 | bpstat | |
fba45db2 | 2014 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2015 | { |
c5aa993b JM |
2016 | if (bsp == NULL) |
2017 | return NULL; | |
c906108c | 2018 | |
c5aa993b JM |
2019 | for (; bsp != NULL; bsp = bsp->next) |
2020 | { | |
2021 | if (bsp->breakpoint_at == breakpoint) | |
2022 | return bsp; | |
2023 | } | |
c906108c SS |
2024 | return NULL; |
2025 | } | |
2026 | ||
2027 | /* Find a step_resume breakpoint associated with this bpstat. | |
2028 | (If there are multiple step_resume bp's on the list, this function | |
2029 | will arbitrarily pick one.) | |
2030 | ||
2031 | It is an error to use this function if BPSTAT doesn't contain a | |
2032 | step_resume breakpoint. | |
2033 | ||
2034 | See wait_for_inferior's use of this function. */ | |
2035 | struct breakpoint * | |
fba45db2 | 2036 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2037 | { |
8601f500 MS |
2038 | int current_thread; |
2039 | ||
8a3fe4f8 | 2040 | gdb_assert (bsp != NULL); |
c906108c | 2041 | |
8601f500 MS |
2042 | current_thread = pid_to_thread_id (inferior_ptid); |
2043 | ||
c906108c SS |
2044 | for (; bsp != NULL; bsp = bsp->next) |
2045 | { | |
2046 | if ((bsp->breakpoint_at != NULL) && | |
8601f500 MS |
2047 | (bsp->breakpoint_at->type == bp_step_resume) && |
2048 | (bsp->breakpoint_at->thread == current_thread || | |
2049 | bsp->breakpoint_at->thread == -1)) | |
c5aa993b | 2050 | return bsp->breakpoint_at; |
c906108c SS |
2051 | } |
2052 | ||
8a3fe4f8 | 2053 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2054 | } |
2055 | ||
2056 | ||
2057 | /* Return the breakpoint number of the first breakpoint we are stopped | |
2058 | at. *BSP upon return is a bpstat which points to the remaining | |
2059 | breakpoints stopped at (but which is not guaranteed to be good for | |
2060 | anything but further calls to bpstat_num). | |
2061 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
2062 | ||
2063 | int | |
fba45db2 | 2064 | bpstat_num (bpstat *bsp) |
c906108c SS |
2065 | { |
2066 | struct breakpoint *b; | |
2067 | ||
2068 | if ((*bsp) == NULL) | |
2069 | return 0; /* No more breakpoint values */ | |
2070 | else | |
2071 | { | |
2072 | b = (*bsp)->breakpoint_at; | |
2073 | *bsp = (*bsp)->next; | |
2074 | if (b == NULL) | |
2075 | return -1; /* breakpoint that's been deleted since */ | |
2076 | else | |
c5aa993b | 2077 | return b->number; /* We have its number */ |
c906108c SS |
2078 | } |
2079 | } | |
2080 | ||
2081 | /* Modify BS so that the actions will not be performed. */ | |
2082 | ||
2083 | void | |
fba45db2 | 2084 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2085 | { |
2086 | for (; bs != NULL; bs = bs->next) | |
2087 | { | |
c2b8ed2c | 2088 | free_command_lines (&bs->commands); |
c906108c SS |
2089 | if (bs->old_val != NULL) |
2090 | { | |
2091 | value_free (bs->old_val); | |
2092 | bs->old_val = NULL; | |
2093 | } | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2098 | static void |
4efb68b1 | 2099 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2100 | { |
2101 | executing_breakpoint_commands = 0; | |
2102 | } | |
2103 | ||
2104 | /* Execute all the commands associated with all the breakpoints at this | |
2105 | location. Any of these commands could cause the process to proceed | |
2106 | beyond this point, etc. We look out for such changes by checking | |
2107 | the global "breakpoint_proceeded" after each command. */ | |
2108 | ||
2109 | void | |
fba45db2 | 2110 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2111 | { |
2112 | bpstat bs; | |
2113 | struct cleanup *old_chain; | |
c906108c SS |
2114 | |
2115 | /* Avoid endless recursion if a `source' command is contained | |
2116 | in bs->commands. */ | |
2117 | if (executing_breakpoint_commands) | |
2118 | return; | |
2119 | ||
2120 | executing_breakpoint_commands = 1; | |
2121 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2122 | ||
2123 | top: | |
2124 | /* Note that (as of this writing), our callers all appear to | |
2125 | be passing us the address of global stop_bpstat. And, if | |
2126 | our calls to execute_control_command cause the inferior to | |
2127 | proceed, that global (and hence, *bsp) will change. | |
2128 | ||
2129 | We must be careful to not touch *bsp unless the inferior | |
2130 | has not proceeded. */ | |
2131 | ||
2132 | /* This pointer will iterate over the list of bpstat's. */ | |
2133 | bs = *bsp; | |
2134 | ||
2135 | breakpoint_proceeded = 0; | |
2136 | for (; bs != NULL; bs = bs->next) | |
2137 | { | |
6c50ab1c JB |
2138 | struct command_line *cmd; |
2139 | struct cleanup *this_cmd_tree_chain; | |
2140 | ||
2141 | /* Take ownership of the BSP's command tree, if it has one. | |
2142 | ||
2143 | The command tree could legitimately contain commands like | |
2144 | 'step' and 'next', which call clear_proceed_status, which | |
2145 | frees stop_bpstat's command tree. To make sure this doesn't | |
2146 | free the tree we're executing out from under us, we need to | |
2147 | take ownership of the tree ourselves. Since a given bpstat's | |
2148 | commands are only executed once, we don't need to copy it; we | |
2149 | can clear the pointer in the bpstat, and make sure we free | |
2150 | the tree when we're done. */ | |
c906108c | 2151 | cmd = bs->commands; |
6c50ab1c JB |
2152 | bs->commands = 0; |
2153 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2154 | ||
c906108c SS |
2155 | while (cmd != NULL) |
2156 | { | |
2157 | execute_control_command (cmd); | |
2158 | ||
2159 | if (breakpoint_proceeded) | |
2160 | break; | |
2161 | else | |
2162 | cmd = cmd->next; | |
2163 | } | |
6c50ab1c JB |
2164 | |
2165 | /* We can free this command tree now. */ | |
2166 | do_cleanups (this_cmd_tree_chain); | |
2167 | ||
c906108c SS |
2168 | if (breakpoint_proceeded) |
2169 | /* The inferior is proceeded by the command; bomb out now. | |
2170 | The bpstat chain has been blown away by wait_for_inferior. | |
2171 | But since execution has stopped again, there is a new bpstat | |
2172 | to look at, so start over. */ | |
2173 | goto top; | |
c906108c | 2174 | } |
c2b8ed2c | 2175 | do_cleanups (old_chain); |
c906108c SS |
2176 | } |
2177 | ||
e514a9d6 | 2178 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2179 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2180 | by having it set different print_it values. |
2181 | ||
2182 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2183 | through the bpstat list of things causing this stop, calling the | |
2184 | print_bp_stop_message function on each one. The behavior of the | |
2185 | print_bp_stop_message function depends on the print_it field of | |
2186 | bpstat. If such field so indicates, call this function here. | |
2187 | ||
2188 | Return values from this routine (ultimately used by bpstat_print() | |
2189 | and normal_stop() to decide what to do): | |
2190 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2191 | don't print anything else. | |
2192 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2193 | that something to be followed by a location. | |
2194 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2195 | that something to be followed by a location. | |
2196 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2197 | analysis. */ | |
c906108c | 2198 | |
917317f4 | 2199 | static enum print_stop_action |
fba45db2 | 2200 | print_it_typical (bpstat bs) |
c906108c | 2201 | { |
3b31d625 | 2202 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
2203 | struct ui_stream *stb; |
2204 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 2205 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2206 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2207 | which has since been deleted. */ | |
e514a9d6 | 2208 | if (bs->breakpoint_at == NULL) |
917317f4 | 2209 | return PRINT_UNKNOWN; |
c906108c | 2210 | |
e514a9d6 | 2211 | switch (bs->breakpoint_at->type) |
c906108c | 2212 | { |
e514a9d6 JM |
2213 | case bp_breakpoint: |
2214 | case bp_hardware_breakpoint: | |
5cab636d DJ |
2215 | if (bs->breakpoint_at->loc->address != bs->breakpoint_at->loc->requested_address) |
2216 | breakpoint_adjustment_warning (bs->breakpoint_at->loc->requested_address, | |
2217 | bs->breakpoint_at->loc->address, | |
76897487 | 2218 | bs->breakpoint_at->number, 1); |
8b93c638 JM |
2219 | annotate_breakpoint (bs->breakpoint_at->number); |
2220 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2221 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2222 | ui_out_field_string (uiout, "reason", |
2223 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8b93c638 JM |
2224 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
2225 | ui_out_text (uiout, ", "); | |
2226 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2227 | break; |
2228 | ||
2229 | case bp_shlib_event: | |
917317f4 JM |
2230 | /* Did we stop because the user set the stop_on_solib_events |
2231 | variable? (If so, we report this as a generic, "Stopped due | |
2232 | to shlib event" message.) */ | |
a3f17187 | 2233 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2234 | return PRINT_NOTHING; |
2235 | break; | |
2236 | ||
c4093a6a JM |
2237 | case bp_thread_event: |
2238 | /* Not sure how we will get here. | |
2239 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2240 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2241 | return PRINT_NOTHING; |
2242 | break; | |
2243 | ||
1900040c MS |
2244 | case bp_overlay_event: |
2245 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2246 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2247 | return PRINT_NOTHING; |
2248 | break; | |
2249 | ||
e514a9d6 | 2250 | case bp_catch_load: |
c906108c | 2251 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 AC |
2252 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
2253 | bs->breakpoint_at->number, | |
2254 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2255 | return PRINT_SRC_AND_LOC; |
2256 | break; | |
2257 | ||
2258 | case bp_catch_unload: | |
2259 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2260 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
2261 | bs->breakpoint_at->number, | |
2262 | bs->breakpoint_at->triggered_dll_pathname); | |
e514a9d6 JM |
2263 | return PRINT_SRC_AND_LOC; |
2264 | break; | |
2265 | ||
2266 | case bp_catch_fork: | |
2267 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2268 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
2269 | bs->breakpoint_at->number, | |
53a5351d | 2270 | bs->breakpoint_at->forked_inferior_pid); |
917317f4 | 2271 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2272 | break; |
2273 | ||
2274 | case bp_catch_vfork: | |
2275 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 AC |
2276 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
2277 | bs->breakpoint_at->number, | |
e514a9d6 JM |
2278 | bs->breakpoint_at->forked_inferior_pid); |
2279 | return PRINT_SRC_AND_LOC; | |
2280 | break; | |
2281 | ||
2282 | case bp_catch_exec: | |
c906108c | 2283 | annotate_catchpoint (bs->breakpoint_at->number); |
a3f17187 | 2284 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
c5aa993b JM |
2285 | bs->breakpoint_at->number, |
2286 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 2287 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2288 | break; |
2289 | ||
2290 | case bp_catch_catch: | |
53a5351d JM |
2291 | if (current_exception_event && |
2292 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
2293 | { |
2294 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2295 | printf_filtered (_("\nCatchpoint %d (exception caught), "), |
53a5351d | 2296 | bs->breakpoint_at->number); |
c5aa993b | 2297 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2298 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2299 | CURRENT_EXCEPTION_THROW_FILE, |
2300 | CURRENT_EXCEPTION_THROW_LINE); | |
2301 | else | |
a3f17187 | 2302 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2303 | |
c5aa993b | 2304 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2305 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2306 | CURRENT_EXCEPTION_CATCH_FILE, |
2307 | CURRENT_EXCEPTION_CATCH_LINE); | |
2308 | else | |
a3f17187 | 2309 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2310 | |
e514a9d6 JM |
2311 | /* don't bother to print location frame info */ |
2312 | return PRINT_SRC_ONLY; | |
c5aa993b | 2313 | } |
c906108c | 2314 | else |
c5aa993b | 2315 | { |
e514a9d6 JM |
2316 | /* really throw, some other bpstat will handle it */ |
2317 | return PRINT_UNKNOWN; | |
c5aa993b | 2318 | } |
e514a9d6 JM |
2319 | break; |
2320 | ||
2321 | case bp_catch_throw: | |
53a5351d JM |
2322 | if (current_exception_event && |
2323 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
2324 | { |
2325 | annotate_catchpoint (bs->breakpoint_at->number); | |
a3f17187 | 2326 | printf_filtered (_("\nCatchpoint %d (exception thrown), "), |
53a5351d | 2327 | bs->breakpoint_at->number); |
c5aa993b | 2328 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) |
a3f17187 | 2329 | printf_filtered (_("throw location %s:%d, "), |
c5aa993b JM |
2330 | CURRENT_EXCEPTION_THROW_FILE, |
2331 | CURRENT_EXCEPTION_THROW_LINE); | |
2332 | else | |
a3f17187 | 2333 | printf_filtered (_("throw location unknown, ")); |
c5aa993b | 2334 | |
c5aa993b | 2335 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) |
a3f17187 | 2336 | printf_filtered (_("catch location %s:%d\n"), |
c5aa993b JM |
2337 | CURRENT_EXCEPTION_CATCH_FILE, |
2338 | CURRENT_EXCEPTION_CATCH_LINE); | |
2339 | else | |
a3f17187 | 2340 | printf_filtered (_("catch location unknown\n")); |
c5aa993b | 2341 | |
e514a9d6 JM |
2342 | /* don't bother to print location frame info */ |
2343 | return PRINT_SRC_ONLY; | |
c5aa993b | 2344 | } |
c906108c | 2345 | else |
c5aa993b | 2346 | { |
e514a9d6 JM |
2347 | /* really catch, some other bpstat will handle it */ |
2348 | return PRINT_UNKNOWN; | |
c5aa993b | 2349 | } |
e514a9d6 | 2350 | break; |
c906108c | 2351 | |
e514a9d6 JM |
2352 | case bp_watchpoint: |
2353 | case bp_hardware_watchpoint: | |
2354 | if (bs->old_val != NULL) | |
2355 | { | |
2356 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2357 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2358 | ui_out_field_string |
2359 | (uiout, "reason", | |
2360 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2361 | mention (bs->breakpoint_at); |
3b31d625 | 2362 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2363 | ui_out_text (uiout, "\nOld value = "); |
2364 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2365 | ui_out_field_stream (uiout, "old", stb); | |
2366 | ui_out_text (uiout, "\nNew value = "); | |
2367 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2368 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2369 | do_cleanups (ui_out_chain); |
8b93c638 | 2370 | ui_out_text (uiout, "\n"); |
e514a9d6 JM |
2371 | value_free (bs->old_val); |
2372 | bs->old_val = NULL; | |
2373 | } | |
2374 | /* More than one watchpoint may have been triggered. */ | |
2375 | return PRINT_UNKNOWN; | |
2376 | break; | |
2377 | ||
2378 | case bp_read_watchpoint: | |
9dc5e2a9 | 2379 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2380 | ui_out_field_string |
2381 | (uiout, "reason", | |
2382 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2383 | mention (bs->breakpoint_at); |
3b31d625 | 2384 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2385 | ui_out_text (uiout, "\nValue = "); |
2386 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2387 | ui_out_field_stream (uiout, "value", stb); | |
3b31d625 | 2388 | do_cleanups (ui_out_chain); |
8b93c638 | 2389 | ui_out_text (uiout, "\n"); |
917317f4 | 2390 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2391 | break; |
2392 | ||
2393 | case bp_access_watchpoint: | |
8b93c638 JM |
2394 | if (bs->old_val != NULL) |
2395 | { | |
2396 | annotate_watchpoint (bs->breakpoint_at->number); | |
9dc5e2a9 | 2397 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2398 | ui_out_field_string |
2399 | (uiout, "reason", | |
2400 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8b93c638 | 2401 | mention (bs->breakpoint_at); |
3b31d625 | 2402 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2403 | ui_out_text (uiout, "\nOld value = "); |
2404 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2405 | ui_out_field_stream (uiout, "old", stb); | |
2406 | value_free (bs->old_val); | |
2407 | bs->old_val = NULL; | |
2408 | ui_out_text (uiout, "\nNew value = "); | |
2409 | } | |
2410 | else | |
2411 | { | |
2412 | mention (bs->breakpoint_at); | |
9dc5e2a9 | 2413 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2414 | ui_out_field_string |
2415 | (uiout, "reason", | |
2416 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2417 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2418 | ui_out_text (uiout, "\nValue = "); |
2419 | } | |
2420 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2421 | ui_out_field_stream (uiout, "new", stb); | |
3b31d625 | 2422 | do_cleanups (ui_out_chain); |
8b93c638 | 2423 | ui_out_text (uiout, "\n"); |
917317f4 | 2424 | return PRINT_UNKNOWN; |
e514a9d6 | 2425 | break; |
4ce44c66 | 2426 | |
e514a9d6 JM |
2427 | /* Fall through, we don't deal with these types of breakpoints |
2428 | here. */ | |
2429 | ||
11cf8741 | 2430 | case bp_finish: |
9dc5e2a9 | 2431 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2432 | ui_out_field_string |
2433 | (uiout, "reason", | |
2434 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2435 | return PRINT_UNKNOWN; |
2436 | break; | |
2437 | ||
e514a9d6 | 2438 | case bp_until: |
9dc5e2a9 | 2439 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2440 | ui_out_field_string |
2441 | (uiout, "reason", | |
2442 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2443 | return PRINT_UNKNOWN; |
2444 | break; | |
2445 | ||
c2d11a7d | 2446 | case bp_none: |
e514a9d6 JM |
2447 | case bp_longjmp: |
2448 | case bp_longjmp_resume: | |
2449 | case bp_step_resume: | |
2450 | case bp_through_sigtramp: | |
2451 | case bp_watchpoint_scope: | |
2452 | case bp_call_dummy: | |
2453 | default: | |
2454 | return PRINT_UNKNOWN; | |
2455 | } | |
2456 | } | |
2457 | ||
2458 | /* Generic routine for printing messages indicating why we | |
2459 | stopped. The behavior of this function depends on the value | |
2460 | 'print_it' in the bpstat structure. Under some circumstances we | |
2461 | may decide not to print anything here and delegate the task to | |
2462 | normal_stop(). */ | |
2463 | ||
2464 | static enum print_stop_action | |
2465 | print_bp_stop_message (bpstat bs) | |
2466 | { | |
2467 | switch (bs->print_it) | |
2468 | { | |
2469 | case print_it_noop: | |
2470 | /* Nothing should be printed for this bpstat entry. */ | |
2471 | return PRINT_UNKNOWN; | |
2472 | break; | |
2473 | ||
2474 | case print_it_done: | |
2475 | /* We still want to print the frame, but we already printed the | |
2476 | relevant messages. */ | |
2477 | return PRINT_SRC_AND_LOC; | |
2478 | break; | |
2479 | ||
2480 | case print_it_normal: | |
3086aeae DJ |
2481 | /* Normal case. Call the breakpoint's print_it method, or |
2482 | print_it_typical. */ | |
2483 | if (bs->breakpoint_at != NULL && bs->breakpoint_at->ops != NULL | |
2484 | && bs->breakpoint_at->ops->print_it != NULL) | |
2485 | return bs->breakpoint_at->ops->print_it (bs->breakpoint_at); | |
2486 | else | |
2487 | return print_it_typical (bs); | |
e514a9d6 | 2488 | break; |
3086aeae | 2489 | |
e514a9d6 | 2490 | default: |
8e65ff28 | 2491 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2492 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2493 | break; |
c906108c | 2494 | } |
c906108c SS |
2495 | } |
2496 | ||
e514a9d6 JM |
2497 | /* Print a message indicating what happened. This is called from |
2498 | normal_stop(). The input to this routine is the head of the bpstat | |
2499 | list - a list of the eventpoints that caused this stop. This | |
2500 | routine calls the generic print routine for printing a message | |
2501 | about reasons for stopping. This will print (for example) the | |
2502 | "Breakpoint n," part of the output. The return value of this | |
2503 | routine is one of: | |
c906108c | 2504 | |
917317f4 JM |
2505 | PRINT_UNKNOWN: Means we printed nothing |
2506 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2507 | code to print the location. An example is |
2508 | "Breakpoint 1, " which should be followed by | |
2509 | the location. | |
917317f4 | 2510 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2511 | to also print the location part of the message. |
2512 | An example is the catch/throw messages, which | |
917317f4 JM |
2513 | don't require a location appended to the end. |
2514 | PRINT_NOTHING: We have done some printing and we don't need any | |
2515 | further info to be printed.*/ | |
c906108c | 2516 | |
917317f4 | 2517 | enum print_stop_action |
fba45db2 | 2518 | bpstat_print (bpstat bs) |
c906108c SS |
2519 | { |
2520 | int val; | |
c5aa993b | 2521 | |
c906108c | 2522 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2523 | (Currently all watchpoints go on the bpstat whether hit or not. |
2524 | That probably could (should) be changed, provided care is taken | |
c906108c | 2525 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2526 | for (; bs; bs = bs->next) |
2527 | { | |
2528 | val = print_bp_stop_message (bs); | |
2529 | if (val == PRINT_SRC_ONLY | |
2530 | || val == PRINT_SRC_AND_LOC | |
2531 | || val == PRINT_NOTHING) | |
2532 | return val; | |
2533 | } | |
c906108c | 2534 | |
e514a9d6 JM |
2535 | /* We reached the end of the chain, or we got a null BS to start |
2536 | with and nothing was printed. */ | |
917317f4 | 2537 | return PRINT_UNKNOWN; |
c906108c SS |
2538 | } |
2539 | ||
2540 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2541 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2542 | The argument is a "struct expression *" that has been cast to char * to | |
2543 | make it pass through catch_errors. */ | |
2544 | ||
2545 | static int | |
4efb68b1 | 2546 | breakpoint_cond_eval (void *exp) |
c906108c | 2547 | { |
278cd55f | 2548 | struct value *mark = value_mark (); |
c5aa993b | 2549 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2550 | value_free_to_mark (mark); |
2551 | return i; | |
2552 | } | |
2553 | ||
2554 | /* Allocate a new bpstat and chain it to the current one. */ | |
2555 | ||
2556 | static bpstat | |
831662b3 | 2557 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2558 | { |
2559 | bpstat bs; | |
2560 | ||
2561 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2562 | cbs->next = bs; | |
2563 | bs->breakpoint_at = b; | |
2564 | /* If the condition is false, etc., don't do the commands. */ | |
2565 | bs->commands = NULL; | |
2566 | bs->old_val = NULL; | |
2567 | bs->print_it = print_it_normal; | |
2568 | return bs; | |
2569 | } | |
2570 | \f | |
2571 | /* Possible return values for watchpoint_check (this can't be an enum | |
2572 | because of check_errors). */ | |
2573 | /* The watchpoint has been deleted. */ | |
2574 | #define WP_DELETED 1 | |
2575 | /* The value has changed. */ | |
2576 | #define WP_VALUE_CHANGED 2 | |
2577 | /* The value has not changed. */ | |
2578 | #define WP_VALUE_NOT_CHANGED 3 | |
2579 | ||
2580 | #define BP_TEMPFLAG 1 | |
2581 | #define BP_HARDWAREFLAG 2 | |
2582 | ||
2583 | /* Check watchpoint condition. */ | |
2584 | ||
2585 | static int | |
4efb68b1 | 2586 | watchpoint_check (void *p) |
c906108c SS |
2587 | { |
2588 | bpstat bs = (bpstat) p; | |
2589 | struct breakpoint *b; | |
2590 | struct frame_info *fr; | |
2591 | int within_current_scope; | |
2592 | ||
2593 | b = bs->breakpoint_at; | |
2594 | ||
2595 | if (b->exp_valid_block == NULL) | |
2596 | within_current_scope = 1; | |
2597 | else | |
2598 | { | |
2599 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2600 | any chance of handling watchpoints on local variables, we'll need |
2601 | the frame chain (so we can determine if we're in scope). */ | |
2602 | reinit_frame_cache (); | |
101dcfbe | 2603 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2604 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2605 | |
2606 | /* If we've gotten confused in the unwinder, we might have | |
2607 | returned a frame that can't describe this variable. */ | |
2608 | if (within_current_scope | |
2609 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2610 | within_current_scope = 0; | |
2611 | ||
c12260ac CV |
2612 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2613 | in the function but the stack frame has already been invalidated. | |
2614 | Since we can't rely on the values of local variables after the | |
2615 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2616 | state as `not changed' without further checking. |
2617 | ||
2618 | vinschen/2003-09-04: The former implementation left out the case | |
2619 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2620 | because the current PC is currently in an epilogue. Calling | |
2621 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2622 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2623 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2624 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2625 | if (fr && within_current_scope) |
c906108c SS |
2626 | /* If we end up stopping, the current frame will get selected |
2627 | in normal_stop. So this call to select_frame won't affect | |
2628 | the user. */ | |
0f7d239c | 2629 | select_frame (fr); |
c906108c | 2630 | } |
c5aa993b | 2631 | |
c906108c SS |
2632 | if (within_current_scope) |
2633 | { | |
2634 | /* We use value_{,free_to_}mark because it could be a | |
2635 | *long* time before we return to the command level and | |
c5aa993b JM |
2636 | call free_all_values. We can't call free_all_values because |
2637 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2638 | |
278cd55f AC |
2639 | struct value *mark = value_mark (); |
2640 | struct value *new_val = evaluate_expression (bs->breakpoint_at->exp); | |
c906108c SS |
2641 | if (!value_equal (b->val, new_val)) |
2642 | { | |
2643 | release_value (new_val); | |
2644 | value_free_to_mark (mark); | |
2645 | bs->old_val = b->val; | |
2646 | b->val = new_val; | |
2647 | /* We will stop here */ | |
2648 | return WP_VALUE_CHANGED; | |
2649 | } | |
2650 | else | |
2651 | { | |
2652 | /* Nothing changed, don't do anything. */ | |
2653 | value_free_to_mark (mark); | |
2654 | /* We won't stop here */ | |
2655 | return WP_VALUE_NOT_CHANGED; | |
2656 | } | |
2657 | } | |
2658 | else | |
2659 | { | |
2660 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2661 | if we temporarily ignored the watchpoint, then when |
2662 | we reenter the block in which it is valid it contains | |
2663 | garbage (in the case of a function, it may have two | |
2664 | garbage values, one before and one after the prologue). | |
2665 | So we can't even detect the first assignment to it and | |
2666 | watch after that (since the garbage may or may not equal | |
2667 | the first value assigned). */ | |
4ce44c66 JM |
2668 | /* We print all the stop information in print_it_typical(), but |
2669 | in this case, by the time we call print_it_typical() this bp | |
2670 | will be deleted already. So we have no choice but print the | |
2671 | information here. */ | |
9dc5e2a9 | 2672 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2673 | ui_out_field_string |
2674 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 JM |
2675 | ui_out_text (uiout, "\nWatchpoint "); |
2676 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2677 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2678 | which its expression is valid.\n"); | |
4ce44c66 | 2679 | |
c906108c | 2680 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2681 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2682 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2683 | |
2684 | return WP_DELETED; | |
2685 | } | |
2686 | } | |
2687 | ||
9709f61c | 2688 | /* Get a bpstat associated with having just stopped at address |
46587c42 JJ |
2689 | BP_ADDR in thread PTID. STOPPED_BY_WATCHPOINT is 1 if the |
2690 | target thinks we stopped due to a hardware watchpoint, 0 if we | |
2691 | know we did not trigger a hardware watchpoint, and -1 if we do not know. */ | |
c906108c SS |
2692 | |
2693 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2694 | don't understand this stop. Result is a chain of bpstat's such that: | |
2695 | ||
c5aa993b | 2696 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2697 | |
c5aa993b | 2698 | if we understand why we stopped, the result is not null. |
c906108c | 2699 | |
c5aa993b JM |
2700 | Each element of the chain refers to a particular breakpoint or |
2701 | watchpoint at which we have stopped. (We may have stopped for | |
2702 | several reasons concurrently.) | |
c906108c | 2703 | |
c5aa993b JM |
2704 | Each element of the chain has valid next, breakpoint_at, |
2705 | commands, FIXME??? fields. */ | |
c906108c SS |
2706 | |
2707 | bpstat | |
00d4360e | 2708 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid, int stopped_by_watchpoint) |
c906108c | 2709 | { |
52f0bd74 | 2710 | struct breakpoint *b, *temp; |
c906108c SS |
2711 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ |
2712 | int real_breakpoint = 0; | |
2713 | /* Root of the chain of bpstat's */ | |
2714 | struct bpstats root_bs[1]; | |
2715 | /* Pointer to the last thing in the chain currently. */ | |
2716 | bpstat bs = root_bs; | |
fa5281d0 | 2717 | int thread_id = pid_to_thread_id (ptid); |
c906108c | 2718 | |
c906108c | 2719 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2720 | { |
468d015d | 2721 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2722 | continue; |
2723 | ||
2724 | if (b->type != bp_watchpoint | |
46587c42 JJ |
2725 | && b->type != bp_hardware_watchpoint |
2726 | && b->type != bp_read_watchpoint | |
2727 | && b->type != bp_access_watchpoint | |
c5aa993b JM |
2728 | && b->type != bp_hardware_breakpoint |
2729 | && b->type != bp_catch_fork | |
2730 | && b->type != bp_catch_vfork | |
2731 | && b->type != bp_catch_exec | |
2732 | && b->type != bp_catch_catch | |
2733 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
9f04af04 | 2734 | { |
5cab636d | 2735 | if (b->loc->address != bp_addr) /* address doesn't match */ |
9f04af04 MS |
2736 | continue; |
2737 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2738 | && section_is_overlay (b->loc->section) |
2739 | && !section_is_mapped (b->loc->section)) | |
9f04af04 MS |
2740 | continue; |
2741 | } | |
c906108c | 2742 | |
46587c42 JJ |
2743 | /* Continuable hardware watchpoints are treated as non-existent if the |
2744 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2745 | some data address). Otherwise gdb won't stop on a break instruction | |
2746 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2747 | been defined. */ | |
2748 | ||
2749 | if ((b->type == bp_hardware_watchpoint | |
2750 | || b->type == bp_read_watchpoint | |
2751 | || b->type == bp_access_watchpoint) | |
2752 | && !stopped_by_watchpoint) | |
2753 | continue; | |
2754 | ||
c02f5703 MS |
2755 | if (b->type == bp_hardware_breakpoint) |
2756 | { | |
9709f61c | 2757 | if (b->loc->address != bp_addr) |
c02f5703 MS |
2758 | continue; |
2759 | if (overlay_debugging /* unmapped overlay section */ | |
cf3a9e5b DJ |
2760 | && section_is_overlay (b->loc->section) |
2761 | && !section_is_mapped (b->loc->section)) | |
c02f5703 MS |
2762 | continue; |
2763 | } | |
c5aa993b | 2764 | |
c5aa993b JM |
2765 | /* Is this a catchpoint of a load or unload? If so, did we |
2766 | get a load or unload of the specified library? If not, | |
2767 | ignore it. */ | |
2768 | if ((b->type == bp_catch_load) | |
c906108c | 2769 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2770 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2771 | || ((b->dll_pathname != NULL) |
53a5351d | 2772 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2773 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2774 | PIDGET (inferior_ptid))) | |
53a5351d | 2775 | != 0))) |
c906108c | 2776 | #endif |
c5aa993b JM |
2777 | ) |
2778 | continue; | |
2779 | ||
2780 | if ((b->type == bp_catch_unload) | |
c906108c | 2781 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2782 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2783 | || ((b->dll_pathname != NULL) |
53a5351d | 2784 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2785 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2786 | PIDGET (inferior_ptid))) | |
53a5351d | 2787 | != 0))) |
c906108c | 2788 | #endif |
c5aa993b JM |
2789 | ) |
2790 | continue; | |
c906108c | 2791 | |
c5aa993b | 2792 | if ((b->type == bp_catch_fork) |
47932f85 DJ |
2793 | && !inferior_has_forked (PIDGET (inferior_ptid), |
2794 | &b->forked_inferior_pid)) | |
c5aa993b | 2795 | continue; |
c906108c | 2796 | |
c5aa993b | 2797 | if ((b->type == bp_catch_vfork) |
47932f85 DJ |
2798 | && !inferior_has_vforked (PIDGET (inferior_ptid), |
2799 | &b->forked_inferior_pid)) | |
c5aa993b | 2800 | continue; |
c906108c | 2801 | |
c5aa993b | 2802 | if ((b->type == bp_catch_exec) |
47932f85 | 2803 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2804 | continue; |
c906108c | 2805 | |
c5aa993b JM |
2806 | if (ep_is_exception_catchpoint (b) && |
2807 | !(current_exception_event = target_get_current_exception_event ())) | |
2808 | continue; | |
c906108c | 2809 | |
c5aa993b JM |
2810 | /* Come here if it's a watchpoint, or if the break address matches */ |
2811 | ||
2812 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2813 | ||
2814 | /* Watchpoints may change this, if not found to have triggered. */ | |
2815 | bs->stop = 1; | |
2816 | bs->print = 1; | |
2817 | ||
53a5351d JM |
2818 | if (b->type == bp_watchpoint || |
2819 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2820 | { |
9ebf4acf AC |
2821 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", |
2822 | b->number); | |
2823 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2824 | int e = catch_errors (watchpoint_check, bs, message, | |
2825 | RETURN_MASK_ALL); | |
2826 | do_cleanups (cleanups); | |
2827 | switch (e) | |
c5aa993b JM |
2828 | { |
2829 | case WP_DELETED: | |
2830 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2831 | /* Actually this is superfluous, because by the time we |
2832 | call print_it_typical() the wp will be already deleted, | |
2833 | and the function will return immediately. */ | |
c5aa993b JM |
2834 | bs->print_it = print_it_done; |
2835 | /* Stop. */ | |
2836 | break; | |
2837 | case WP_VALUE_CHANGED: | |
2838 | /* Stop. */ | |
2839 | ++(b->hit_count); | |
2840 | break; | |
2841 | case WP_VALUE_NOT_CHANGED: | |
2842 | /* Don't stop. */ | |
2843 | bs->print_it = print_it_noop; | |
2844 | bs->stop = 0; | |
c5aa993b JM |
2845 | continue; |
2846 | default: | |
2847 | /* Can't happen. */ | |
2848 | /* FALLTHROUGH */ | |
2849 | case 0: | |
2850 | /* Error from catch_errors. */ | |
a3f17187 | 2851 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
c5aa993b | 2852 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2853 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2854 | b->disposition = disp_del_at_next_stop; | |
c5aa993b JM |
2855 | /* We've already printed what needs to be printed. */ |
2856 | bs->print_it = print_it_done; | |
2857 | ||
2858 | /* Stop. */ | |
2859 | break; | |
2860 | } | |
2861 | } | |
53a5351d JM |
2862 | else if (b->type == bp_read_watchpoint || |
2863 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2864 | { |
2865 | CORE_ADDR addr; | |
278cd55f | 2866 | struct value *v; |
c5aa993b JM |
2867 | int found = 0; |
2868 | ||
4aa7a7f5 | 2869 | if (!target_stopped_data_address (¤t_target, &addr)) |
c5aa993b | 2870 | continue; |
17cf0ecd | 2871 | for (v = b->val_chain; v; v = value_next (v)) |
c5aa993b | 2872 | { |
5c44784c | 2873 | if (VALUE_LVAL (v) == lval_memory |
d69fe07e | 2874 | && ! value_lazy (v)) |
c5aa993b | 2875 | { |
df407dfe | 2876 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
2877 | |
2878 | if (v == b->val_chain | |
2879 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2880 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2881 | { | |
2882 | CORE_ADDR vaddr; | |
2883 | ||
df407dfe | 2884 | vaddr = VALUE_ADDRESS (v) + value_offset (v); |
2e70b7b9 MS |
2885 | /* Exact match not required. Within range is |
2886 | sufficient. */ | |
2887 | if (addr >= vaddr && | |
df407dfe | 2888 | addr < vaddr + TYPE_LENGTH (value_type (v))) |
2e70b7b9 MS |
2889 | found = 1; |
2890 | } | |
c5aa993b JM |
2891 | } |
2892 | } | |
2893 | if (found) | |
9ebf4acf AC |
2894 | { |
2895 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2896 | b->number); | |
2897 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2898 | int e = catch_errors (watchpoint_check, bs, message, | |
2899 | RETURN_MASK_ALL); | |
2900 | do_cleanups (cleanups); | |
2901 | switch (e) | |
2902 | { | |
2903 | case WP_DELETED: | |
2904 | /* We've already printed what needs to be printed. */ | |
2905 | bs->print_it = print_it_done; | |
2906 | /* Stop. */ | |
2907 | break; | |
2908 | case WP_VALUE_CHANGED: | |
2909 | if (b->type == bp_read_watchpoint) | |
2910 | { | |
2911 | /* Don't stop: read watchpoints shouldn't fire if | |
2912 | the value has changed. This is for targets | |
2913 | which cannot set read-only watchpoints. */ | |
2914 | bs->print_it = print_it_noop; | |
2915 | bs->stop = 0; | |
2916 | continue; | |
2917 | } | |
2918 | ++(b->hit_count); | |
2919 | break; | |
2920 | case WP_VALUE_NOT_CHANGED: | |
2921 | /* Stop. */ | |
2922 | ++(b->hit_count); | |
2923 | break; | |
2924 | default: | |
2925 | /* Can't happen. */ | |
2926 | case 0: | |
2927 | /* Error from catch_errors. */ | |
a3f17187 | 2928 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); |
9ebf4acf AC |
2929 | if (b->related_breakpoint) |
2930 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2931 | b->disposition = disp_del_at_next_stop; | |
2932 | /* We've already printed what needs to be printed. */ | |
2933 | bs->print_it = print_it_done; | |
2934 | break; | |
2935 | } | |
2936 | } | |
53a5351d JM |
2937 | else /* found == 0 */ |
2938 | { | |
2939 | /* This is a case where some watchpoint(s) triggered, | |
2940 | but not at the address of this watchpoint (FOUND | |
2941 | was left zero). So don't print anything for this | |
2942 | watchpoint. */ | |
2943 | bs->print_it = print_it_noop; | |
2944 | bs->stop = 0; | |
2945 | continue; | |
2946 | } | |
c5aa993b JM |
2947 | } |
2948 | else | |
2949 | { | |
2950 | /* By definition, an encountered breakpoint is a triggered | |
2951 | breakpoint. */ | |
2952 | ++(b->hit_count); | |
c906108c | 2953 | |
c5aa993b JM |
2954 | real_breakpoint = 1; |
2955 | } | |
2956 | ||
818dd999 AC |
2957 | if (frame_id_p (b->frame_id) |
2958 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
c5aa993b JM |
2959 | bs->stop = 0; |
2960 | else | |
2961 | { | |
2962 | int value_is_zero = 0; | |
2963 | ||
2964 | if (b->cond) | |
2965 | { | |
2966 | /* Need to select the frame, with all that implies | |
2967 | so that the conditions will have the right context. */ | |
0f7d239c | 2968 | select_frame (get_current_frame ()); |
c5aa993b JM |
2969 | value_is_zero |
2970 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2971 | "Error in testing breakpoint condition:\n", | |
2972 | RETURN_MASK_ALL); | |
2973 | /* FIXME-someday, should give breakpoint # */ | |
2974 | free_all_values (); | |
2975 | } | |
2976 | if (b->cond && value_is_zero) | |
2977 | { | |
2978 | bs->stop = 0; | |
2979 | /* Don't consider this a hit. */ | |
2980 | --(b->hit_count); | |
2981 | } | |
fa5281d0 DJ |
2982 | else if (b->thread != -1 && b->thread != thread_id) |
2983 | { | |
2984 | bs->stop = 0; | |
2985 | /* Don't consider this a hit. */ | |
2986 | --(b->hit_count); | |
2987 | } | |
c5aa993b JM |
2988 | else if (b->ignore_count > 0) |
2989 | { | |
2990 | b->ignore_count--; | |
5c44784c | 2991 | annotate_ignore_count_change (); |
c5aa993b JM |
2992 | bs->stop = 0; |
2993 | } | |
2994 | else | |
2995 | { | |
2996 | /* We will stop here */ | |
b5de0fa7 EZ |
2997 | if (b->disposition == disp_disable) |
2998 | b->enable_state = bp_disabled; | |
c5aa993b JM |
2999 | if (b->silent) |
3000 | bs->print = 0; | |
552f4abf | 3001 | bs->commands = b->commands; |
c5aa993b | 3002 | if (bs->commands && |
6314a349 AC |
3003 | (strcmp ("silent", bs->commands->line) == 0 |
3004 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b JM |
3005 | { |
3006 | bs->commands = bs->commands->next; | |
c906108c | 3007 | bs->print = 0; |
c5aa993b | 3008 | } |
552f4abf | 3009 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b JM |
3010 | } |
3011 | } | |
3012 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
3013 | if (bs->stop == 0 || bs->print == 0) | |
3014 | bs->print_it = print_it_noop; | |
3015 | } | |
c906108c SS |
3016 | |
3017 | bs->next = NULL; /* Terminate the chain */ | |
3018 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3019 | ||
c906108c SS |
3020 | /* The value of a hardware watchpoint hasn't changed, but the |
3021 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 3022 | if (bs && !bs->stop && |
c906108c SS |
3023 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
3024 | bs->breakpoint_at->type == bp_read_watchpoint || | |
3025 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
3026 | { | |
3027 | remove_breakpoints (); | |
3028 | insert_breakpoints (); | |
3029 | } | |
3030 | return bs; | |
3031 | } | |
3032 | \f | |
3033 | /* Tell what to do about this bpstat. */ | |
3034 | struct bpstat_what | |
fba45db2 | 3035 | bpstat_what (bpstat bs) |
c906108c SS |
3036 | { |
3037 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3038 | enum class |
3039 | { | |
3040 | /* This bpstat element has no effect on the main_action. */ | |
3041 | no_effect = 0, | |
3042 | ||
3043 | /* There was a watchpoint, stop but don't print. */ | |
3044 | wp_silent, | |
c906108c | 3045 | |
c5aa993b JM |
3046 | /* There was a watchpoint, stop and print. */ |
3047 | wp_noisy, | |
c906108c | 3048 | |
c5aa993b JM |
3049 | /* There was a breakpoint but we're not stopping. */ |
3050 | bp_nostop, | |
c906108c | 3051 | |
c5aa993b JM |
3052 | /* There was a breakpoint, stop but don't print. */ |
3053 | bp_silent, | |
c906108c | 3054 | |
c5aa993b JM |
3055 | /* There was a breakpoint, stop and print. */ |
3056 | bp_noisy, | |
c906108c | 3057 | |
c5aa993b JM |
3058 | /* We hit the longjmp breakpoint. */ |
3059 | long_jump, | |
c906108c | 3060 | |
c5aa993b JM |
3061 | /* We hit the longjmp_resume breakpoint. */ |
3062 | long_resume, | |
c906108c | 3063 | |
c5aa993b JM |
3064 | /* We hit the step_resume breakpoint. */ |
3065 | step_resume, | |
c906108c | 3066 | |
c5aa993b JM |
3067 | /* We hit the through_sigtramp breakpoint. */ |
3068 | through_sig, | |
c906108c | 3069 | |
c5aa993b JM |
3070 | /* We hit the shared library event breakpoint. */ |
3071 | shlib_event, | |
c906108c | 3072 | |
c5aa993b JM |
3073 | /* We caught a shared library event. */ |
3074 | catch_shlib_event, | |
c906108c | 3075 | |
c5aa993b JM |
3076 | /* This is just used to count how many enums there are. */ |
3077 | class_last | |
c906108c SS |
3078 | }; |
3079 | ||
3080 | /* Here is the table which drives this routine. So that we can | |
3081 | format it pretty, we define some abbreviations for the | |
3082 | enum bpstat_what codes. */ | |
3083 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3084 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3085 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3086 | #define sgl BPSTAT_WHAT_SINGLE | |
3087 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3088 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
3089 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
3090 | #define sr BPSTAT_WHAT_STEP_RESUME | |
3091 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
3092 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
3093 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3094 | ||
3095 | /* "Can't happen." Might want to print an error message. | |
3096 | abort() is not out of the question, but chances are GDB is just | |
3097 | a bit confused, not unusable. */ | |
3098 | #define err BPSTAT_WHAT_STOP_NOISY | |
3099 | ||
3100 | /* Given an old action and a class, come up with a new action. */ | |
3101 | /* One interesting property of this table is that wp_silent is the same | |
3102 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3103 | after stopping, the check for whether to step over a breakpoint | |
3104 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3105 | reference to how we stopped. We retain separate wp_silent and |
3106 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3107 | |
3108 | Another possibly interesting property of this table is that | |
3109 | there's a partial ordering, priority-like, of the actions. Once | |
3110 | you've decided that some action is appropriate, you'll never go | |
3111 | back and decide something of a lower priority is better. The | |
3112 | ordering is: | |
3113 | ||
7e73cedf | 3114 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
3115 | sgl < clrs shl shlr slr sn sr ss ts |
3116 | slr < err shl shlr sn sr ss ts | |
3117 | clr < clrs err shl shlr sn sr ss ts | |
3118 | clrs < err shl shlr sn sr ss ts | |
3119 | ss < shl shlr sn sr ts | |
3120 | sn < shl shlr sr ts | |
3121 | sr < shl shlr ts | |
3122 | shl < shlr | |
3123 | ts < | |
3124 | shlr < | |
3125 | ||
43ff13b4 JM |
3126 | What I think this means is that we don't need a damned table |
3127 | here. If you just put the rows and columns in the right order, | |
3128 | it'd look awfully regular. We could simply walk the bpstat list | |
3129 | and choose the highest priority action we find, with a little | |
3130 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
3131 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
3132 | is messy anyway). */ | |
c906108c SS |
3133 | |
3134 | /* step_resume entries: a step resume breakpoint overrides another | |
3135 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3136 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3137 | |
3138 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3139 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3140 | { | |
3141 | /* old action */ | |
3142 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
3143 | */ | |
3144 | /*no_effect */ | |
3145 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
3146 | /*wp_silent */ | |
3147 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3148 | /*wp_noisy */ | |
3149 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3150 | /*bp_nostop */ | |
3151 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
3152 | /*bp_silent */ | |
3153 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
3154 | /*bp_noisy */ | |
3155 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
3156 | /*long_jump */ | |
a48bb0b3 | 3157 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
3158 | /*long_resume */ |
3159 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
3160 | /*step_resume */ | |
3161 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
3162 | /*through_sig */ | |
3163 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
3164 | /*shlib */ | |
3165 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
3166 | /*catch_shlib */ | |
3167 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
3168 | }; | |
c906108c SS |
3169 | |
3170 | #undef kc | |
3171 | #undef ss | |
3172 | #undef sn | |
3173 | #undef sgl | |
3174 | #undef slr | |
3175 | #undef clr | |
3176 | #undef clrs | |
3177 | #undef err | |
3178 | #undef sr | |
3179 | #undef ts | |
3180 | #undef shl | |
3181 | #undef shlr | |
3182 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3183 | struct bpstat_what retval; | |
3184 | ||
3185 | retval.call_dummy = 0; | |
3186 | for (; bs != NULL; bs = bs->next) | |
3187 | { | |
3188 | enum class bs_class = no_effect; | |
3189 | if (bs->breakpoint_at == NULL) | |
3190 | /* I suspect this can happen if it was a momentary breakpoint | |
3191 | which has since been deleted. */ | |
3192 | continue; | |
3193 | switch (bs->breakpoint_at->type) | |
3194 | { | |
3195 | case bp_none: | |
3196 | continue; | |
3197 | ||
3198 | case bp_breakpoint: | |
3199 | case bp_hardware_breakpoint: | |
3200 | case bp_until: | |
3201 | case bp_finish: | |
3202 | if (bs->stop) | |
3203 | { | |
3204 | if (bs->print) | |
3205 | bs_class = bp_noisy; | |
3206 | else | |
3207 | bs_class = bp_silent; | |
3208 | } | |
3209 | else | |
3210 | bs_class = bp_nostop; | |
3211 | break; | |
3212 | case bp_watchpoint: | |
3213 | case bp_hardware_watchpoint: | |
3214 | case bp_read_watchpoint: | |
3215 | case bp_access_watchpoint: | |
3216 | if (bs->stop) | |
3217 | { | |
3218 | if (bs->print) | |
3219 | bs_class = wp_noisy; | |
3220 | else | |
3221 | bs_class = wp_silent; | |
3222 | } | |
3223 | else | |
53a5351d JM |
3224 | /* There was a watchpoint, but we're not stopping. |
3225 | This requires no further action. */ | |
c906108c SS |
3226 | bs_class = no_effect; |
3227 | break; | |
3228 | case bp_longjmp: | |
3229 | bs_class = long_jump; | |
3230 | break; | |
3231 | case bp_longjmp_resume: | |
3232 | bs_class = long_resume; | |
3233 | break; | |
3234 | case bp_step_resume: | |
3235 | if (bs->stop) | |
3236 | { | |
3237 | bs_class = step_resume; | |
3238 | } | |
3239 | else | |
3240 | /* It is for the wrong frame. */ | |
3241 | bs_class = bp_nostop; | |
3242 | break; | |
3243 | case bp_through_sigtramp: | |
3244 | bs_class = through_sig; | |
3245 | break; | |
3246 | case bp_watchpoint_scope: | |
3247 | bs_class = bp_nostop; | |
3248 | break; | |
c5aa993b JM |
3249 | case bp_shlib_event: |
3250 | bs_class = shlib_event; | |
3251 | break; | |
c4093a6a | 3252 | case bp_thread_event: |
1900040c | 3253 | case bp_overlay_event: |
c4093a6a JM |
3254 | bs_class = bp_nostop; |
3255 | break; | |
c5aa993b JM |
3256 | case bp_catch_load: |
3257 | case bp_catch_unload: | |
3258 | /* Only if this catchpoint triggered should we cause the | |
3259 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3260 | catchpoint. */ | |
3261 | if (bs->stop) | |
3262 | bs_class = catch_shlib_event; | |
3263 | else | |
3264 | bs_class = no_effect; | |
3265 | break; | |
3266 | case bp_catch_fork: | |
3267 | case bp_catch_vfork: | |
3268 | case bp_catch_exec: | |
3269 | if (bs->stop) | |
3270 | { | |
3271 | if (bs->print) | |
3272 | bs_class = bp_noisy; | |
3273 | else | |
3274 | bs_class = bp_silent; | |
3275 | } | |
3276 | else | |
53a5351d JM |
3277 | /* There was a catchpoint, but we're not stopping. |
3278 | This requires no further action. */ | |
c5aa993b JM |
3279 | bs_class = no_effect; |
3280 | break; | |
3281 | case bp_catch_catch: | |
3282 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
3283 | bs_class = bp_nostop; | |
3284 | else if (bs->stop) | |
3285 | bs_class = bs->print ? bp_noisy : bp_silent; | |
3286 | break; | |
3287 | case bp_catch_throw: | |
3288 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
3289 | bs_class = bp_nostop; | |
3290 | else if (bs->stop) | |
3291 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 3292 | break; |
c906108c | 3293 | case bp_call_dummy: |
53a5351d JM |
3294 | /* Make sure the action is stop (silent or noisy), |
3295 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3296 | bs_class = bp_silent; |
3297 | retval.call_dummy = 1; | |
3298 | break; | |
3299 | } | |
c5aa993b | 3300 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3301 | } |
3302 | retval.main_action = current_action; | |
3303 | return retval; | |
3304 | } | |
3305 | ||
3306 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3307 | without hardware support). This isn't related to a specific bpstat, | |
3308 | just to things like whether watchpoints are set. */ | |
3309 | ||
c5aa993b | 3310 | int |
fba45db2 | 3311 | bpstat_should_step (void) |
c906108c SS |
3312 | { |
3313 | struct breakpoint *b; | |
3314 | ALL_BREAKPOINTS (b) | |
468d015d | 3315 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3316 | return 1; |
c906108c SS |
3317 | return 0; |
3318 | } | |
3319 | ||
3320 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3321 | int | |
fba45db2 | 3322 | bpstat_have_active_hw_watchpoints (void) |
c906108c | 3323 | { |
075f6582 DJ |
3324 | struct bp_location *bpt; |
3325 | ALL_BP_LOCATIONS (bpt) | |
468d015d | 3326 | if (breakpoint_enabled (bpt->owner) |
075f6582 DJ |
3327 | && bpt->inserted |
3328 | && bpt->loc_type == bp_loc_hardware_watchpoint) | |
3172dc30 | 3329 | return 1; |
c906108c SS |
3330 | return 0; |
3331 | } | |
c906108c | 3332 | \f |
c5aa993b | 3333 | |
c906108c SS |
3334 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3335 | function returns another bpstat which contains only the catchpoints | |
3336 | on that first list, if any. */ | |
3337 | void | |
fba45db2 | 3338 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3339 | { |
3340 | struct bpstats root_bs[1]; | |
3341 | bpstat bs = root_bs; | |
3342 | struct breakpoint *ep; | |
3343 | char *dll_pathname; | |
3344 | ||
c906108c SS |
3345 | bpstat_clear (cp_list); |
3346 | root_bs->next = NULL; | |
c5aa993b JM |
3347 | |
3348 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3349 | { |
3350 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3351 | ep = ep_list->breakpoint_at; | |
3352 | if (ep == NULL) | |
c5aa993b JM |
3353 | break; |
3354 | if ((ep->type != bp_catch_load) && | |
3355 | (ep->type != bp_catch_unload) && | |
3356 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3357 | (ep->type != bp_catch_throw)) |
3358 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3359 | continue; |
3360 | ||
c906108c SS |
3361 | /* Yes; add it to the list. */ |
3362 | bs = bpstat_alloc (ep, bs); | |
3363 | *bs = *ep_list; | |
3364 | bs->next = NULL; | |
3365 | bs = root_bs->next; | |
c5aa993b | 3366 | |
c906108c SS |
3367 | #if defined(SOLIB_ADD) |
3368 | /* Also, for each triggered catchpoint, tag it with the name of | |
3369 | the library that caused this trigger. (We copy the name now, | |
3370 | because it's only guaranteed to be available NOW, when the | |
3371 | catchpoint triggers. Clients who may wish to know the name | |
3372 | later must get it from the catchpoint itself.) */ | |
3373 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3374 | xfree (ep->triggered_dll_pathname); |
c906108c | 3375 | if (ep->type == bp_catch_load) |
39f77062 KB |
3376 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3377 | PIDGET (inferior_ptid)); | |
c906108c | 3378 | else |
39f77062 KB |
3379 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3380 | PIDGET (inferior_ptid)); | |
c906108c SS |
3381 | #else |
3382 | dll_pathname = NULL; | |
3383 | #endif | |
3384 | if (dll_pathname) | |
3385 | { | |
53a5351d JM |
3386 | ep->triggered_dll_pathname = (char *) |
3387 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3388 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3389 | } | |
3390 | else | |
3391 | ep->triggered_dll_pathname = NULL; | |
3392 | } | |
c5aa993b | 3393 | |
c906108c SS |
3394 | *cp_list = bs; |
3395 | } | |
3396 | ||
c4093a6a | 3397 | /* Print B to gdb_stdout. */ |
c906108c | 3398 | static void |
c4093a6a JM |
3399 | print_one_breakpoint (struct breakpoint *b, |
3400 | CORE_ADDR *last_addr) | |
c906108c | 3401 | { |
52f0bd74 AC |
3402 | struct command_line *l; |
3403 | struct symbol *sym; | |
c4093a6a JM |
3404 | struct ep_type_description |
3405 | { | |
3406 | enum bptype type; | |
3407 | char *description; | |
3408 | }; | |
3409 | static struct ep_type_description bptypes[] = | |
c906108c | 3410 | { |
c5aa993b JM |
3411 | {bp_none, "?deleted?"}, |
3412 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3413 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3414 | {bp_until, "until"}, |
3415 | {bp_finish, "finish"}, | |
3416 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3417 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3418 | {bp_read_watchpoint, "read watchpoint"}, |
3419 | {bp_access_watchpoint, "acc watchpoint"}, | |
3420 | {bp_longjmp, "longjmp"}, | |
3421 | {bp_longjmp_resume, "longjmp resume"}, | |
3422 | {bp_step_resume, "step resume"}, | |
3423 | {bp_through_sigtramp, "sigtramp"}, | |
3424 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3425 | {bp_call_dummy, "call dummy"}, | |
3426 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3427 | {bp_thread_event, "thread events"}, |
1900040c | 3428 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3429 | {bp_catch_load, "catch load"}, |
3430 | {bp_catch_unload, "catch unload"}, | |
3431 | {bp_catch_fork, "catch fork"}, | |
3432 | {bp_catch_vfork, "catch vfork"}, | |
3433 | {bp_catch_exec, "catch exec"}, | |
3434 | {bp_catch_catch, "catch catch"}, | |
3435 | {bp_catch_throw, "catch throw"} | |
3436 | }; | |
c4093a6a | 3437 | |
c5aa993b JM |
3438 | static char *bpdisps[] = |
3439 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3440 | static char bpenables[] = "nynny"; |
c906108c | 3441 | char wrap_indent[80]; |
8b93c638 JM |
3442 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3443 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3444 | struct cleanup *bkpt_chain; |
c906108c | 3445 | |
c4093a6a | 3446 | annotate_record (); |
3b31d625 | 3447 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3448 | |
3449 | /* 1 */ | |
3450 | annotate_field (0); | |
8b93c638 | 3451 | ui_out_field_int (uiout, "number", b->number); |
c4093a6a JM |
3452 | |
3453 | /* 2 */ | |
3454 | annotate_field (1); | |
3455 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3456 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 | 3457 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3458 | _("bptypes table does not describe type #%d."), |
c4093a6a | 3459 | (int) b->type); |
8b93c638 | 3460 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); |
c4093a6a JM |
3461 | |
3462 | /* 3 */ | |
3463 | annotate_field (2); | |
8b93c638 | 3464 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); |
c4093a6a JM |
3465 | |
3466 | /* 4 */ | |
3467 | annotate_field (3); | |
b5de0fa7 | 3468 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable_state]); |
8b93c638 | 3469 | ui_out_spaces (uiout, 2); |
c4093a6a JM |
3470 | |
3471 | /* 5 and 6 */ | |
3472 | strcpy (wrap_indent, " "); | |
3473 | if (addressprint) | |
75ac9d7b MS |
3474 | { |
3475 | if (TARGET_ADDR_BIT <= 32) | |
3476 | strcat (wrap_indent, " "); | |
3477 | else | |
3478 | strcat (wrap_indent, " "); | |
3479 | } | |
c906108c | 3480 | |
3086aeae DJ |
3481 | if (b->ops != NULL && b->ops->print_one != NULL) |
3482 | b->ops->print_one (b, last_addr); | |
3483 | else | |
3484 | switch (b->type) | |
3485 | { | |
3486 | case bp_none: | |
3487 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3488 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3489 | break; |
c906108c | 3490 | |
3086aeae DJ |
3491 | case bp_watchpoint: |
3492 | case bp_hardware_watchpoint: | |
3493 | case bp_read_watchpoint: | |
3494 | case bp_access_watchpoint: | |
3495 | /* Field 4, the address, is omitted (which makes the columns | |
3496 | not line up too nicely with the headers, but the effect | |
3497 | is relatively readable). */ | |
3498 | if (addressprint) | |
3499 | ui_out_field_skip (uiout, "addr"); | |
3500 | annotate_field (5); | |
3501 | print_expression (b->exp, stb->stream); | |
3502 | ui_out_field_stream (uiout, "what", stb); | |
3503 | break; | |
3504 | ||
3505 | case bp_catch_load: | |
3506 | case bp_catch_unload: | |
3507 | /* Field 4, the address, is omitted (which makes the columns | |
3508 | not line up too nicely with the headers, but the effect | |
3509 | is relatively readable). */ | |
3510 | if (addressprint) | |
3511 | ui_out_field_skip (uiout, "addr"); | |
3512 | annotate_field (5); | |
3513 | if (b->dll_pathname == NULL) | |
3514 | { | |
3515 | ui_out_field_string (uiout, "what", "<any library>"); | |
3516 | ui_out_spaces (uiout, 1); | |
3517 | } | |
3518 | else | |
3519 | { | |
3520 | ui_out_text (uiout, "library \""); | |
3521 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3522 | ui_out_text (uiout, "\" "); | |
3523 | } | |
3524 | break; | |
3525 | ||
3526 | case bp_catch_fork: | |
3527 | case bp_catch_vfork: | |
3528 | /* Field 4, the address, is omitted (which makes the columns | |
3529 | not line up too nicely with the headers, but the effect | |
3530 | is relatively readable). */ | |
3531 | if (addressprint) | |
3532 | ui_out_field_skip (uiout, "addr"); | |
3533 | annotate_field (5); | |
3534 | if (b->forked_inferior_pid != 0) | |
3535 | { | |
3536 | ui_out_text (uiout, "process "); | |
3537 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3538 | ui_out_spaces (uiout, 1); | |
3539 | } | |
0f699bbe | 3540 | break; |
3086aeae DJ |
3541 | |
3542 | case bp_catch_exec: | |
3543 | /* Field 4, the address, is omitted (which makes the columns | |
3544 | not line up too nicely with the headers, but the effect | |
3545 | is relatively readable). */ | |
3546 | if (addressprint) | |
3547 | ui_out_field_skip (uiout, "addr"); | |
3548 | annotate_field (5); | |
3549 | if (b->exec_pathname != NULL) | |
3550 | { | |
3551 | ui_out_text (uiout, "program \""); | |
3552 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3553 | ui_out_text (uiout, "\" "); | |
3554 | } | |
3555 | break; | |
3556 | ||
3557 | case bp_catch_catch: | |
3558 | /* Field 4, the address, is omitted (which makes the columns | |
3559 | not line up too nicely with the headers, but the effect | |
3560 | is relatively readable). */ | |
3561 | if (addressprint) | |
3562 | ui_out_field_skip (uiout, "addr"); | |
3563 | annotate_field (5); | |
3564 | ui_out_field_string (uiout, "what", "exception catch"); | |
3565 | ui_out_spaces (uiout, 1); | |
3566 | break; | |
3567 | ||
3568 | case bp_catch_throw: | |
3569 | /* Field 4, the address, is omitted (which makes the columns | |
3570 | not line up too nicely with the headers, but the effect | |
3571 | is relatively readable). */ | |
3572 | if (addressprint) | |
3573 | ui_out_field_skip (uiout, "addr"); | |
3574 | annotate_field (5); | |
3575 | ui_out_field_string (uiout, "what", "exception throw"); | |
3576 | ui_out_spaces (uiout, 1); | |
3577 | break; | |
3578 | ||
3579 | case bp_breakpoint: | |
3580 | case bp_hardware_breakpoint: | |
3581 | case bp_until: | |
3582 | case bp_finish: | |
3583 | case bp_longjmp: | |
3584 | case bp_longjmp_resume: | |
3585 | case bp_step_resume: | |
3586 | case bp_through_sigtramp: | |
3587 | case bp_watchpoint_scope: | |
3588 | case bp_call_dummy: | |
3589 | case bp_shlib_event: | |
3590 | case bp_thread_event: | |
3591 | case bp_overlay_event: | |
3592 | if (addressprint) | |
3593 | { | |
3594 | annotate_field (4); | |
0101ce28 | 3595 | if (b->pending) |
d5479188 | 3596 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 JJ |
3597 | else |
3598 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
3599 | } |
3600 | annotate_field (5); | |
5cab636d | 3601 | *last_addr = b->loc->address; |
3086aeae DJ |
3602 | if (b->source_file) |
3603 | { | |
cf3a9e5b | 3604 | sym = find_pc_sect_function (b->loc->address, b->loc->section); |
3086aeae DJ |
3605 | if (sym) |
3606 | { | |
3607 | ui_out_text (uiout, "in "); | |
3608 | ui_out_field_string (uiout, "func", | |
3609 | SYMBOL_PRINT_NAME (sym)); | |
3610 | ui_out_wrap_hint (uiout, wrap_indent); | |
3611 | ui_out_text (uiout, " at "); | |
3612 | } | |
3613 | ui_out_field_string (uiout, "file", b->source_file); | |
3614 | ui_out_text (uiout, ":"); | |
38fcd64c DJ |
3615 | |
3616 | if (ui_out_is_mi_like_p (uiout)) | |
3617 | { | |
3618 | struct symtab_and_line sal = find_pc_line (b->loc->address, 0); | |
3619 | char *fullname = symtab_to_fullname (sal.symtab); | |
3620 | ||
3621 | if (fullname) | |
3622 | ui_out_field_string (uiout, "fullname", fullname); | |
3623 | } | |
3624 | ||
3086aeae DJ |
3625 | ui_out_field_int (uiout, "line", b->line_number); |
3626 | } | |
0101ce28 JJ |
3627 | else if (b->pending) |
3628 | { | |
3629 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3630 | } | |
3086aeae DJ |
3631 | else |
3632 | { | |
5cab636d | 3633 | print_address_symbolic (b->loc->address, stb->stream, demangle, ""); |
3086aeae DJ |
3634 | ui_out_field_stream (uiout, "at", stb); |
3635 | } | |
3636 | break; | |
3637 | } | |
c906108c | 3638 | |
c4093a6a JM |
3639 | if (b->thread != -1) |
3640 | { | |
8b93c638 JM |
3641 | /* FIXME: This seems to be redundant and lost here; see the |
3642 | "stop only in" line a little further down. */ | |
3643 | ui_out_text (uiout, " thread "); | |
3644 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3645 | } |
3646 | ||
8b93c638 | 3647 | ui_out_text (uiout, "\n"); |
c4093a6a | 3648 | |
818dd999 | 3649 | if (frame_id_p (b->frame_id)) |
c4093a6a JM |
3650 | { |
3651 | annotate_field (6); | |
8b93c638 | 3652 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3653 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3654 | the frame ID. */ | |
d0a55772 | 3655 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3656 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3657 | } |
3658 | ||
f7f9143b | 3659 | if (b->cond && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3660 | { |
f7f9143b JB |
3661 | /* We do not print the condition for Ada exception catchpoints |
3662 | because the condition is an internal implementation detail | |
3663 | that we do not want to expose to the user. */ | |
c4093a6a | 3664 | annotate_field (7); |
8b93c638 JM |
3665 | ui_out_text (uiout, "\tstop only if "); |
3666 | print_expression (b->cond, stb->stream); | |
3667 | ui_out_field_stream (uiout, "cond", stb); | |
3668 | ui_out_text (uiout, "\n"); | |
c4093a6a | 3669 | } |
0101ce28 JJ |
3670 | |
3671 | if (b->pending && b->cond_string) | |
3672 | { | |
3673 | annotate_field (7); | |
3674 | ui_out_text (uiout, "\tstop only if "); | |
3675 | ui_out_field_string (uiout, "cond", b->cond_string); | |
3676 | ui_out_text (uiout, "\n"); | |
3677 | } | |
3678 | ||
c4093a6a JM |
3679 | if (b->thread != -1) |
3680 | { | |
3681 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3682 | ui_out_text (uiout, "\tstop only in thread "); |
3683 | ui_out_field_int (uiout, "thread", b->thread); | |
3684 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3685 | } |
3686 | ||
3687 | if (show_breakpoint_hit_counts && b->hit_count) | |
3688 | { | |
3689 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3690 | if (ep_is_catchpoint (b)) |
3691 | ui_out_text (uiout, "\tcatchpoint"); | |
3692 | else | |
3693 | ui_out_text (uiout, "\tbreakpoint"); | |
3694 | ui_out_text (uiout, " already hit "); | |
3695 | ui_out_field_int (uiout, "times", b->hit_count); | |
3696 | if (b->hit_count == 1) | |
3697 | ui_out_text (uiout, " time\n"); | |
3698 | else | |
3699 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3700 | } |
3701 | ||
fb40c209 AC |
3702 | /* Output the count also if it is zero, but only if this is |
3703 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3704 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 AC |
3705 | if (show_breakpoint_hit_counts && b->hit_count == 0) |
3706 | ui_out_field_int (uiout, "times", b->hit_count); | |
8b93c638 | 3707 | |
c4093a6a JM |
3708 | if (b->ignore_count) |
3709 | { | |
3710 | annotate_field (8); | |
8b93c638 JM |
3711 | ui_out_text (uiout, "\tignore next "); |
3712 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3713 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3714 | } |
3715 | ||
3716 | if ((l = b->commands)) | |
3717 | { | |
3b31d625 EZ |
3718 | struct cleanup *script_chain; |
3719 | ||
c4093a6a | 3720 | annotate_field (9); |
3b31d625 | 3721 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3722 | print_command_lines (uiout, l, 4); |
3b31d625 | 3723 | do_cleanups (script_chain); |
c4093a6a | 3724 | } |
3b31d625 | 3725 | do_cleanups (bkpt_chain); |
8b93c638 | 3726 | do_cleanups (old_chain); |
c4093a6a | 3727 | } |
c5aa993b | 3728 | |
c4093a6a JM |
3729 | struct captured_breakpoint_query_args |
3730 | { | |
3731 | int bnum; | |
3732 | }; | |
c5aa993b | 3733 | |
c4093a6a | 3734 | static int |
2b65245e | 3735 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3736 | { |
3737 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3738 | struct breakpoint *b; |
c4093a6a JM |
3739 | CORE_ADDR dummy_addr = 0; |
3740 | ALL_BREAKPOINTS (b) | |
3741 | { | |
3742 | if (args->bnum == b->number) | |
c5aa993b | 3743 | { |
c4093a6a JM |
3744 | print_one_breakpoint (b, &dummy_addr); |
3745 | return GDB_RC_OK; | |
c5aa993b | 3746 | } |
c4093a6a JM |
3747 | } |
3748 | return GDB_RC_NONE; | |
3749 | } | |
c5aa993b | 3750 | |
c4093a6a | 3751 | enum gdb_rc |
ce43223b | 3752 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3753 | { |
3754 | struct captured_breakpoint_query_args args; | |
3755 | args.bnum = bnum; | |
3756 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3757 | an error. */ | |
ce43223b | 3758 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
1c3c7ee7 | 3759 | error_message, RETURN_MASK_ALL); |
c4093a6a | 3760 | } |
c5aa993b | 3761 | |
7f3b0473 AC |
3762 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3763 | catchpoints, et.al.). */ | |
3764 | ||
3765 | static int | |
3766 | user_settable_breakpoint (const struct breakpoint *b) | |
3767 | { | |
3768 | return (b->type == bp_breakpoint | |
3769 | || b->type == bp_catch_load | |
3770 | || b->type == bp_catch_unload | |
3771 | || b->type == bp_catch_fork | |
3772 | || b->type == bp_catch_vfork | |
3773 | || b->type == bp_catch_exec | |
3774 | || b->type == bp_catch_catch | |
3775 | || b->type == bp_catch_throw | |
3776 | || b->type == bp_hardware_breakpoint | |
3777 | || b->type == bp_watchpoint | |
3778 | || b->type == bp_read_watchpoint | |
3779 | || b->type == bp_access_watchpoint | |
3780 | || b->type == bp_hardware_watchpoint); | |
3781 | } | |
3782 | ||
3783 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3784 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3785 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3786 | |
c4093a6a | 3787 | static void |
fba45db2 | 3788 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3789 | { |
52f0bd74 | 3790 | struct breakpoint *b; |
c4093a6a | 3791 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3792 | int nr_printable_breakpoints; |
3b31d625 | 3793 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3794 | |
7f3b0473 AC |
3795 | /* Compute the number of rows in the table. */ |
3796 | nr_printable_breakpoints = 0; | |
3797 | ALL_BREAKPOINTS (b) | |
3798 | if (bnum == -1 | |
3799 | || bnum == b->number) | |
3800 | { | |
3801 | if (allflag || user_settable_breakpoint (b)) | |
3802 | nr_printable_breakpoints++; | |
3803 | } | |
3804 | ||
8b93c638 | 3805 | if (addressprint) |
3b31d625 EZ |
3806 | bkpttbl_chain |
3807 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3808 | "BreakpointTable"); | |
8b93c638 | 3809 | else |
3b31d625 EZ |
3810 | bkpttbl_chain |
3811 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3812 | "BreakpointTable"); | |
8b93c638 | 3813 | |
7f3b0473 | 3814 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3815 | annotate_breakpoints_headers (); |
3816 | if (nr_printable_breakpoints > 0) | |
3817 | annotate_field (0); | |
3818 | ui_out_table_header (uiout, 3, ui_left, "number", "Num"); /* 1 */ | |
3819 | if (nr_printable_breakpoints > 0) | |
3820 | annotate_field (1); | |
3821 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3822 | if (nr_printable_breakpoints > 0) | |
3823 | annotate_field (2); | |
3824 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3825 | if (nr_printable_breakpoints > 0) | |
3826 | annotate_field (3); | |
3827 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ | |
3828 | if (addressprint) | |
7f3b0473 | 3829 | { |
d7faa9e7 AC |
3830 | if (nr_printable_breakpoints > 0) |
3831 | annotate_field (4); | |
7f3b0473 | 3832 | if (TARGET_ADDR_BIT <= 32) |
b25959ec | 3833 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3834 | else |
b25959ec | 3835 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3836 | } |
d7faa9e7 AC |
3837 | if (nr_printable_breakpoints > 0) |
3838 | annotate_field (5); | |
3839 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3840 | ui_out_table_body (uiout); | |
3841 | if (nr_printable_breakpoints > 0) | |
3842 | annotate_breakpoints_table (); | |
7f3b0473 | 3843 | |
c4093a6a JM |
3844 | ALL_BREAKPOINTS (b) |
3845 | if (bnum == -1 | |
3846 | || bnum == b->number) | |
3847 | { | |
3848 | /* We only print out user settable breakpoints unless the | |
3849 | allflag is set. */ | |
7f3b0473 AC |
3850 | if (allflag || user_settable_breakpoint (b)) |
3851 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3852 | } |
3853 | ||
3b31d625 | 3854 | do_cleanups (bkpttbl_chain); |
698384cd | 3855 | |
7f3b0473 | 3856 | if (nr_printable_breakpoints == 0) |
c906108c | 3857 | { |
8b93c638 JM |
3858 | if (bnum == -1) |
3859 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3860 | else | |
3861 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3862 | bnum); | |
c906108c SS |
3863 | } |
3864 | else | |
c4093a6a JM |
3865 | { |
3866 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3867 | that a comparison of an unsigned with -1 is always false. */ | |
3868 | if (last_addr != (CORE_ADDR) -1) | |
3869 | set_next_address (last_addr); | |
3870 | } | |
c906108c | 3871 | |
c4093a6a JM |
3872 | /* FIXME? Should this be moved up so that it is only called when |
3873 | there have been breakpoints? */ | |
c906108c SS |
3874 | annotate_breakpoints_table_end (); |
3875 | } | |
3876 | ||
c906108c | 3877 | static void |
fba45db2 | 3878 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3879 | { |
3880 | int bnum = -1; | |
3881 | ||
3882 | if (bnum_exp) | |
bb518678 | 3883 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3884 | |
3885 | breakpoint_1 (bnum, 0); | |
3886 | } | |
3887 | ||
7a292a7a | 3888 | static void |
fba45db2 | 3889 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3890 | { |
3891 | int bnum = -1; | |
3892 | ||
3893 | if (bnum_exp) | |
bb518678 | 3894 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3895 | |
3896 | breakpoint_1 (bnum, 1); | |
3897 | } | |
3898 | ||
c906108c SS |
3899 | /* Print a message describing any breakpoints set at PC. */ |
3900 | ||
3901 | static void | |
d674a25c | 3902 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 3903 | { |
52f0bd74 AC |
3904 | int others = 0; |
3905 | struct breakpoint *b; | |
c906108c SS |
3906 | |
3907 | ALL_BREAKPOINTS (b) | |
5cab636d | 3908 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3909 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 | 3910 | others++; |
c906108c SS |
3911 | if (others > 0) |
3912 | { | |
a3f17187 AC |
3913 | if (others == 1) |
3914 | printf_filtered (_("Note: breakpoint ")); | |
3915 | else /* if (others == ???) */ | |
3916 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 3917 | ALL_BREAKPOINTS (b) |
5cab636d | 3918 | if (b->loc->address == pc) /* address match / overlay match */ |
0101ce28 | 3919 | if (!b->pending && (!overlay_debugging || b->loc->section == section)) |
9f04af04 MS |
3920 | { |
3921 | others--; | |
d674a25c AS |
3922 | printf_filtered ("%d", b->number); |
3923 | if (b->thread == -1 && thread != -1) | |
3924 | printf_filtered (" (all threads)"); | |
3925 | else if (b->thread != -1) | |
3926 | printf_filtered (" (thread %d)", b->thread); | |
3927 | printf_filtered ("%s%s ", | |
9f04af04 MS |
3928 | ((b->enable_state == bp_disabled || |
3929 | b->enable_state == bp_shlib_disabled || | |
3930 | b->enable_state == bp_call_disabled) | |
d674a25c | 3931 | ? " (disabled)" |
9f04af04 MS |
3932 | : b->enable_state == bp_permanent |
3933 | ? " (permanent)" | |
3934 | : ""), | |
3935 | (others > 1) ? "," | |
3936 | : ((others == 1) ? " and" : "")); | |
3937 | } | |
a3f17187 | 3938 | printf_filtered (_("also set at pc ")); |
66bf4b3a | 3939 | deprecated_print_address_numeric (pc, 1, gdb_stdout); |
c906108c SS |
3940 | printf_filtered (".\n"); |
3941 | } | |
3942 | } | |
3943 | \f | |
3944 | /* Set the default place to put a breakpoint | |
3945 | for the `break' command with no arguments. */ | |
3946 | ||
3947 | void | |
fba45db2 KB |
3948 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3949 | int line) | |
c906108c SS |
3950 | { |
3951 | default_breakpoint_valid = valid; | |
3952 | default_breakpoint_address = addr; | |
3953 | default_breakpoint_symtab = symtab; | |
3954 | default_breakpoint_line = line; | |
3955 | } | |
3956 | ||
e4f237da KB |
3957 | /* Return true iff it is meaningful to use the address member of |
3958 | BPT. For some breakpoint types, the address member is irrelevant | |
3959 | and it makes no sense to attempt to compare it to other addresses | |
3960 | (or use it for any other purpose either). | |
3961 | ||
3962 | More specifically, each of the following breakpoint types will always | |
3963 | have a zero valued address and we don't want check_duplicates() to mark | |
3964 | breakpoints of any of these types to be a duplicate of an actual | |
3965 | breakpoint at address zero: | |
3966 | ||
3967 | bp_watchpoint | |
3968 | bp_hardware_watchpoint | |
3969 | bp_read_watchpoint | |
3970 | bp_access_watchpoint | |
3971 | bp_catch_exec | |
3972 | bp_longjmp_resume | |
3973 | bp_catch_fork | |
3974 | bp_catch_vork */ | |
3975 | ||
3976 | static int | |
3977 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3978 | { | |
3979 | enum bptype type = bpt->type; | |
3980 | ||
3981 | return (type != bp_watchpoint | |
3982 | && type != bp_hardware_watchpoint | |
3983 | && type != bp_read_watchpoint | |
3984 | && type != bp_access_watchpoint | |
3985 | && type != bp_catch_exec | |
3986 | && type != bp_longjmp_resume | |
3987 | && type != bp_catch_fork | |
3988 | && type != bp_catch_vfork); | |
3989 | } | |
3990 | ||
9f60f21b | 3991 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3992 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3993 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3994 | If we have a permanent breakpoint at the same place as BPT, make |
3995 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3996 | |
3997 | static void | |
9f60f21b | 3998 | check_duplicates (struct breakpoint *bpt) |
c906108c | 3999 | { |
075f6582 | 4000 | struct bp_location *b; |
52f0bd74 | 4001 | int count = 0; |
075f6582 | 4002 | struct bp_location *perm_bp = 0; |
5cab636d | 4003 | CORE_ADDR address = bpt->loc->address; |
cf3a9e5b | 4004 | asection *section = bpt->loc->section; |
c906108c | 4005 | |
e4f237da | 4006 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
4007 | return; |
4008 | ||
075f6582 DJ |
4009 | ALL_BP_LOCATIONS (b) |
4010 | if (b->owner->enable_state != bp_disabled | |
4011 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 4012 | && !b->owner->pending |
075f6582 DJ |
4013 | && b->owner->enable_state != bp_call_disabled |
4014 | && b->address == address /* address / overlay match */ | |
4015 | && (!overlay_debugging || b->section == section) | |
4016 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4017 | { |
c2c6d25f | 4018 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4019 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4020 | { |
4021 | perm_bp = b; | |
4022 | break; | |
4023 | } | |
4024 | ||
c5aa993b | 4025 | count++; |
075f6582 | 4026 | b->duplicate = count > 1; |
c5aa993b | 4027 | } |
c2c6d25f JM |
4028 | |
4029 | /* If we found a permanent breakpoint at this address, go over the | |
4030 | list again and declare all the other breakpoints there to be the | |
4031 | duplicates. */ | |
4032 | if (perm_bp) | |
4033 | { | |
075f6582 | 4034 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4035 | |
4036 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4037 | if (! perm_bp->inserted) |
8e65ff28 | 4038 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4039 | _("allegedly permanent breakpoint is not " |
4040 | "actually inserted")); | |
c2c6d25f | 4041 | |
075f6582 | 4042 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4043 | if (b != perm_bp) |
4044 | { | |
075f6582 DJ |
4045 | if (b->owner->enable_state != bp_disabled |
4046 | && b->owner->enable_state != bp_shlib_disabled | |
0101ce28 | 4047 | && !b->owner->pending |
075f6582 DJ |
4048 | && b->owner->enable_state != bp_call_disabled |
4049 | && b->address == address /* address / overlay match */ | |
4050 | && (!overlay_debugging || b->section == section) | |
4051 | && breakpoint_address_is_meaningful (b->owner)) | |
4052 | { | |
4053 | if (b->inserted) | |
4054 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4055 | _("another breakpoint was inserted on top of " |
4056 | "a permanent breakpoint")); | |
075f6582 DJ |
4057 | |
4058 | b->duplicate = 1; | |
4059 | } | |
c2c6d25f JM |
4060 | } |
4061 | } | |
c906108c SS |
4062 | } |
4063 | ||
76897487 KB |
4064 | static void |
4065 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4066 | int bnum, int have_bnum) | |
4067 | { | |
4068 | char astr1[40]; | |
4069 | char astr2[40]; | |
4070 | ||
bb599908 PH |
4071 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4072 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4073 | if (have_bnum) |
8a3fe4f8 | 4074 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4075 | bnum, astr1, astr2); |
4076 | else | |
8a3fe4f8 | 4077 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4078 | } |
4079 | ||
4080 | /* Adjust a breakpoint's address to account for architectural constraints | |
4081 | on breakpoint placement. Return the adjusted address. Note: Very | |
4082 | few targets require this kind of adjustment. For most targets, | |
4083 | this function is simply the identity function. */ | |
4084 | ||
4085 | static CORE_ADDR | |
88f7da05 | 4086 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4087 | { |
4088 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4089 | { | |
4090 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4091 | return bpaddr; | |
4092 | } | |
88f7da05 KB |
4093 | else if (bptype == bp_watchpoint |
4094 | || bptype == bp_hardware_watchpoint | |
4095 | || bptype == bp_read_watchpoint | |
4096 | || bptype == bp_access_watchpoint | |
4097 | || bptype == bp_catch_fork | |
4098 | || bptype == bp_catch_vfork | |
4099 | || bptype == bp_catch_exec) | |
4100 | { | |
4101 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4102 | have their addresses modified. */ | |
4103 | return bpaddr; | |
4104 | } | |
76897487 KB |
4105 | else |
4106 | { | |
4107 | CORE_ADDR adjusted_bpaddr; | |
4108 | ||
4109 | /* Some targets have architectural constraints on the placement | |
4110 | of breakpoint instructions. Obtain the adjusted address. */ | |
4111 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4112 | bpaddr); | |
4113 | ||
4114 | /* An adjusted breakpoint address can significantly alter | |
4115 | a user's expectations. Print a warning if an adjustment | |
4116 | is required. */ | |
4117 | if (adjusted_bpaddr != bpaddr) | |
4118 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4119 | ||
4120 | return adjusted_bpaddr; | |
4121 | } | |
4122 | } | |
4123 | ||
7cc221ef DJ |
4124 | /* Allocate a struct bp_location. */ |
4125 | ||
26bb91f3 | 4126 | static struct bp_location * |
e049a4b5 | 4127 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4128 | { |
4129 | struct bp_location *loc, *loc_p; | |
4130 | ||
4131 | loc = xmalloc (sizeof (struct bp_location)); | |
4132 | memset (loc, 0, sizeof (*loc)); | |
4133 | ||
e049a4b5 DJ |
4134 | loc->owner = bpt; |
4135 | ||
4136 | switch (bp_type) | |
4137 | { | |
4138 | case bp_breakpoint: | |
4139 | case bp_until: | |
4140 | case bp_finish: | |
4141 | case bp_longjmp: | |
4142 | case bp_longjmp_resume: | |
4143 | case bp_step_resume: | |
4144 | case bp_through_sigtramp: | |
4145 | case bp_watchpoint_scope: | |
4146 | case bp_call_dummy: | |
4147 | case bp_shlib_event: | |
4148 | case bp_thread_event: | |
4149 | case bp_overlay_event: | |
4150 | case bp_catch_load: | |
4151 | case bp_catch_unload: | |
4152 | loc->loc_type = bp_loc_software_breakpoint; | |
4153 | break; | |
4154 | case bp_hardware_breakpoint: | |
4155 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4156 | break; | |
4157 | case bp_hardware_watchpoint: | |
4158 | case bp_read_watchpoint: | |
4159 | case bp_access_watchpoint: | |
4160 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4161 | break; | |
4162 | case bp_watchpoint: | |
4163 | case bp_catch_fork: | |
4164 | case bp_catch_vfork: | |
4165 | case bp_catch_exec: | |
4166 | case bp_catch_catch: | |
4167 | case bp_catch_throw: | |
4168 | loc->loc_type = bp_loc_other; | |
4169 | break; | |
4170 | default: | |
e2e0b3e5 | 4171 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4172 | } |
4173 | ||
7cc221ef DJ |
4174 | /* Add this breakpoint to the end of the chain. */ |
4175 | ||
4176 | loc_p = bp_location_chain; | |
4177 | if (loc_p == 0) | |
4178 | bp_location_chain = loc; | |
4179 | else | |
4180 | { | |
4181 | while (loc_p->next) | |
4182 | loc_p = loc_p->next; | |
4183 | loc_p->next = loc; | |
4184 | } | |
4185 | ||
4186 | return loc; | |
4187 | } | |
4188 | ||
4d28f7a8 KB |
4189 | /* set_raw_breakpoint() is a low level routine for allocating and |
4190 | partially initializing a breakpoint of type BPTYPE. The newly | |
4191 | created breakpoint's address, section, source file name, and line | |
4192 | number are provided by SAL. The newly created and partially | |
4193 | initialized breakpoint is added to the breakpoint chain and | |
4194 | is also returned as the value of this function. | |
c906108c | 4195 | |
4d28f7a8 KB |
4196 | It is expected that the caller will complete the initialization of |
4197 | the newly created breakpoint struct as well as output any status | |
4198 | information regarding the creation of a new breakpoint. In | |
4199 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
4200 | number! Care should be taken to not allow an error() to occur | |
4201 | prior to completing the initialization of the breakpoint. If this | |
4202 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
4203 | |
4204 | struct breakpoint * | |
4d28f7a8 | 4205 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c | 4206 | { |
52f0bd74 | 4207 | struct breakpoint *b, *b1; |
c906108c SS |
4208 | |
4209 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4210 | memset (b, 0, sizeof (*b)); | |
e049a4b5 | 4211 | b->loc = allocate_bp_location (b, bptype); |
5cab636d | 4212 | b->loc->requested_address = sal.pc; |
88f7da05 KB |
4213 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4214 | bptype); | |
c906108c SS |
4215 | if (sal.symtab == NULL) |
4216 | b->source_file = NULL; | |
4217 | else | |
4218 | b->source_file = savestring (sal.symtab->filename, | |
4219 | strlen (sal.symtab->filename)); | |
cf3a9e5b | 4220 | b->loc->section = sal.section; |
4d28f7a8 | 4221 | b->type = bptype; |
c906108c SS |
4222 | b->language = current_language->la_language; |
4223 | b->input_radix = input_radix; | |
4224 | b->thread = -1; | |
4225 | b->line_number = sal.line; | |
b5de0fa7 | 4226 | b->enable_state = bp_enabled; |
c906108c SS |
4227 | b->next = 0; |
4228 | b->silent = 0; | |
4229 | b->ignore_count = 0; | |
4230 | b->commands = NULL; | |
818dd999 | 4231 | b->frame_id = null_frame_id; |
c906108c SS |
4232 | b->dll_pathname = NULL; |
4233 | b->triggered_dll_pathname = NULL; | |
4234 | b->forked_inferior_pid = 0; | |
4235 | b->exec_pathname = NULL; | |
3086aeae | 4236 | b->ops = NULL; |
0101ce28 | 4237 | b->pending = 0; |
c906108c SS |
4238 | |
4239 | /* Add this breakpoint to the end of the chain | |
4240 | so that a list of breakpoints will come out in order | |
4241 | of increasing numbers. */ | |
4242 | ||
4243 | b1 = breakpoint_chain; | |
4244 | if (b1 == 0) | |
4245 | breakpoint_chain = b; | |
4246 | else | |
4247 | { | |
4248 | while (b1->next) | |
4249 | b1 = b1->next; | |
4250 | b1->next = b; | |
4251 | } | |
4252 | ||
9f60f21b | 4253 | check_duplicates (b); |
c906108c SS |
4254 | breakpoints_changed (); |
4255 | ||
4256 | return b; | |
4257 | } | |
4258 | ||
c2c6d25f JM |
4259 | |
4260 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4261 | instruction, hard-wired into the inferior's code. */ | |
4262 | void | |
4263 | make_breakpoint_permanent (struct breakpoint *b) | |
4264 | { | |
b5de0fa7 | 4265 | b->enable_state = bp_permanent; |
c2c6d25f JM |
4266 | |
4267 | /* By definition, permanent breakpoints are already present in the code. */ | |
5cab636d | 4268 | b->loc->inserted = 1; |
c2c6d25f JM |
4269 | } |
4270 | ||
1900040c MS |
4271 | static struct breakpoint * |
4272 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4273 | { | |
4274 | static int internal_breakpoint_number = -1; | |
4275 | struct symtab_and_line sal; | |
4276 | struct breakpoint *b; | |
4277 | ||
fe39c653 | 4278 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4279 | |
4280 | sal.pc = address; | |
4281 | sal.section = find_pc_overlay (sal.pc); | |
4282 | ||
4283 | b = set_raw_breakpoint (sal, type); | |
4284 | b->number = internal_breakpoint_number--; | |
4285 | b->disposition = disp_donttouch; | |
4286 | ||
4287 | return b; | |
4288 | } | |
4289 | ||
c906108c SS |
4290 | |
4291 | static void | |
fba45db2 | 4292 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4293 | { |
c906108c | 4294 | struct breakpoint *b; |
1900040c | 4295 | struct minimal_symbol *m; |
c906108c | 4296 | |
1900040c MS |
4297 | if (func_name == NULL) |
4298 | b = create_internal_breakpoint (0, bp_longjmp_resume); | |
4299 | else | |
c906108c | 4300 | { |
5520a790 | 4301 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
c906108c | 4302 | return; |
1900040c MS |
4303 | |
4304 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
c906108c | 4305 | } |
c906108c | 4306 | |
b5de0fa7 | 4307 | b->enable_state = bp_disabled; |
c906108c SS |
4308 | b->silent = 1; |
4309 | if (func_name) | |
4fcf66da | 4310 | b->addr_string = xstrdup (func_name); |
c906108c SS |
4311 | } |
4312 | ||
53a5351d JM |
4313 | /* Call this routine when stepping and nexting to enable a breakpoint |
4314 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4315 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4316 | ||
4317 | void | |
fba45db2 | 4318 | enable_longjmp_breakpoint (void) |
c906108c | 4319 | { |
52f0bd74 | 4320 | struct breakpoint *b; |
c906108c SS |
4321 | |
4322 | ALL_BREAKPOINTS (b) | |
4323 | if (b->type == bp_longjmp) | |
c5aa993b | 4324 | { |
b5de0fa7 | 4325 | b->enable_state = bp_enabled; |
9f60f21b | 4326 | check_duplicates (b); |
c5aa993b | 4327 | } |
c906108c SS |
4328 | } |
4329 | ||
4330 | void | |
fba45db2 | 4331 | disable_longjmp_breakpoint (void) |
c906108c | 4332 | { |
52f0bd74 | 4333 | struct breakpoint *b; |
c906108c SS |
4334 | |
4335 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4336 | if (b->type == bp_longjmp |
c906108c | 4337 | || b->type == bp_longjmp_resume) |
c5aa993b | 4338 | { |
b5de0fa7 | 4339 | b->enable_state = bp_disabled; |
9f60f21b | 4340 | check_duplicates (b); |
c5aa993b | 4341 | } |
c906108c SS |
4342 | } |
4343 | ||
1900040c MS |
4344 | static void |
4345 | create_overlay_event_breakpoint (char *func_name) | |
4346 | { | |
4347 | struct breakpoint *b; | |
4348 | struct minimal_symbol *m; | |
4349 | ||
5520a790 | 4350 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4351 | return; |
4352 | ||
4353 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4354 | bp_overlay_event); | |
4355 | b->addr_string = xstrdup (func_name); | |
4356 | ||
4357 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4358 | { |
4359 | b->enable_state = bp_enabled; | |
4360 | overlay_events_enabled = 1; | |
4361 | } | |
1900040c | 4362 | else |
c02f5703 MS |
4363 | { |
4364 | b->enable_state = bp_disabled; | |
4365 | overlay_events_enabled = 0; | |
4366 | } | |
1900040c MS |
4367 | } |
4368 | ||
4369 | void | |
4370 | enable_overlay_breakpoints (void) | |
4371 | { | |
52f0bd74 | 4372 | struct breakpoint *b; |
1900040c MS |
4373 | |
4374 | ALL_BREAKPOINTS (b) | |
4375 | if (b->type == bp_overlay_event) | |
4376 | { | |
4377 | b->enable_state = bp_enabled; | |
4378 | check_duplicates (b); | |
c02f5703 | 4379 | overlay_events_enabled = 1; |
1900040c MS |
4380 | } |
4381 | } | |
4382 | ||
4383 | void | |
4384 | disable_overlay_breakpoints (void) | |
4385 | { | |
52f0bd74 | 4386 | struct breakpoint *b; |
1900040c MS |
4387 | |
4388 | ALL_BREAKPOINTS (b) | |
4389 | if (b->type == bp_overlay_event) | |
4390 | { | |
4391 | b->enable_state = bp_disabled; | |
4392 | check_duplicates (b); | |
c02f5703 | 4393 | overlay_events_enabled = 0; |
1900040c MS |
4394 | } |
4395 | } | |
4396 | ||
c4093a6a | 4397 | struct breakpoint * |
fba45db2 | 4398 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4399 | { |
4400 | struct breakpoint *b; | |
c4093a6a | 4401 | |
1900040c | 4402 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4403 | |
b5de0fa7 | 4404 | b->enable_state = bp_enabled; |
c4093a6a | 4405 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4406 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a JM |
4407 | |
4408 | return b; | |
4409 | } | |
4410 | ||
4411 | void | |
4412 | remove_thread_event_breakpoints (void) | |
4413 | { | |
4414 | struct breakpoint *b, *temp; | |
4415 | ||
4416 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4417 | if (b->type == bp_thread_event) | |
4418 | delete_breakpoint (b); | |
4419 | } | |
4420 | ||
0101ce28 JJ |
4421 | struct captured_parse_breakpoint_args |
4422 | { | |
4423 | char **arg_p; | |
4424 | struct symtabs_and_lines *sals_p; | |
4425 | char ***addr_string_p; | |
4426 | int *not_found_ptr; | |
4427 | }; | |
4428 | ||
4429 | struct lang_and_radix | |
4430 | { | |
4431 | enum language lang; | |
4432 | int radix; | |
4433 | }; | |
4434 | ||
4435 | /* Cleanup helper routine to restore the current language and | |
4436 | input radix. */ | |
4437 | static void | |
4438 | do_restore_lang_radix_cleanup (void *old) | |
4439 | { | |
4440 | struct lang_and_radix *p = old; | |
4441 | set_language (p->lang); | |
4442 | input_radix = p->radix; | |
4443 | } | |
4444 | ||
4445 | /* Try and resolve a pending breakpoint. */ | |
4446 | static int | |
4447 | resolve_pending_breakpoint (struct breakpoint *b) | |
4448 | { | |
4449 | /* Try and reparse the breakpoint in case the shared library | |
4450 | is now loaded. */ | |
4451 | struct symtabs_and_lines sals; | |
4452 | struct symtab_and_line pending_sal; | |
4453 | char **cond_string = (char **) NULL; | |
4454 | char *copy_arg = b->addr_string; | |
4455 | char **addr_string; | |
4456 | char *errmsg; | |
4457 | int rc; | |
4458 | int not_found = 0; | |
4459 | struct ui_file *old_gdb_stderr; | |
4460 | struct lang_and_radix old_lr; | |
4461 | struct cleanup *old_chain; | |
4462 | ||
4463 | /* Set language, input-radix, then reissue breakpoint command. | |
4464 | Ensure the language and input-radix are restored afterwards. */ | |
4465 | old_lr.lang = current_language->la_language; | |
4466 | old_lr.radix = input_radix; | |
4467 | old_chain = make_cleanup (do_restore_lang_radix_cleanup, &old_lr); | |
4468 | ||
4469 | set_language (b->language); | |
4470 | input_radix = b->input_radix; | |
4471 | rc = break_command_1 (b->addr_string, b->flag, b->from_tty, b); | |
4472 | ||
4473 | if (rc == GDB_RC_OK) | |
4474 | /* Pending breakpoint has been resolved. */ | |
a3f17187 | 4475 | printf_filtered (_("Pending breakpoint \"%s\" resolved\n"), b->addr_string); |
0101ce28 JJ |
4476 | |
4477 | do_cleanups (old_chain); | |
4478 | return rc; | |
4479 | } | |
4480 | ||
cae688ec JJ |
4481 | void |
4482 | remove_solib_event_breakpoints (void) | |
4483 | { | |
4484 | struct breakpoint *b, *temp; | |
4485 | ||
4486 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4487 | if (b->type == bp_shlib_event) | |
4488 | delete_breakpoint (b); | |
4489 | } | |
4490 | ||
4491 | struct breakpoint * | |
4492 | create_solib_event_breakpoint (CORE_ADDR address) | |
4493 | { | |
4494 | struct breakpoint *b; | |
4495 | ||
4496 | b = create_internal_breakpoint (address, bp_shlib_event); | |
4497 | return b; | |
4498 | } | |
4499 | ||
4500 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4501 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4502 | ||
4503 | void | |
4504 | disable_breakpoints_in_shlibs (int silent) | |
4505 | { | |
4506 | struct breakpoint *b; | |
4507 | int disabled_shlib_breaks = 0; | |
4508 | ||
4509 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4510 | ALL_BREAKPOINTS (b) | |
4511 | { | |
a77053c2 MK |
4512 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
4513 | && breakpoint_enabled (b) && !b->loc->duplicate | |
4514 | #ifdef PC_SOLIB | |
4515 | && PC_SOLIB (b->loc->address) | |
4516 | #else | |
4517 | && solib_address (b->loc->address) | |
4518 | #endif | |
4519 | ) | |
cae688ec JJ |
4520 | { |
4521 | b->enable_state = bp_shlib_disabled; | |
4522 | if (!silent) | |
4523 | { | |
4524 | if (!disabled_shlib_breaks) | |
4525 | { | |
4526 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4527 | warning (_("Temporarily disabling shared library breakpoints:")); |
cae688ec JJ |
4528 | } |
4529 | disabled_shlib_breaks = 1; | |
8a3fe4f8 | 4530 | warning (_("breakpoint #%d "), b->number); |
cae688ec JJ |
4531 | } |
4532 | } | |
cae688ec JJ |
4533 | } |
4534 | } | |
4535 | ||
84acb35a JJ |
4536 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4537 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4538 | ||
4539 | void | |
4540 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) | |
4541 | { | |
4542 | struct breakpoint *b; | |
4543 | int disabled_shlib_breaks = 0; | |
4544 | ||
84acb35a JJ |
4545 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ |
4546 | ALL_BREAKPOINTS (b) | |
4547 | { | |
4548 | if ((b->loc->loc_type == bp_loc_hardware_breakpoint | |
4549 | || b->loc->loc_type == bp_loc_software_breakpoint) | |
a77053c2 | 4550 | && breakpoint_enabled (b) && !b->loc->duplicate) |
84acb35a | 4551 | { |
a77053c2 | 4552 | #ifdef PC_SOLIB |
84acb35a | 4553 | char *so_name = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4554 | #else |
4555 | char *so_name = solib_address (b->loc->address); | |
4556 | #endif | |
4557 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a JJ |
4558 | { |
4559 | b->enable_state = bp_shlib_disabled; | |
4560 | /* At this point, we cannot rely on remove_breakpoint | |
4561 | succeeding so we must mark the breakpoint as not inserted | |
4562 | to prevent future errors occurring in remove_breakpoints. */ | |
4563 | b->loc->inserted = 0; | |
4564 | if (!disabled_shlib_breaks) | |
4565 | { | |
4566 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4567 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4568 | so_name); |
4569 | } | |
4570 | disabled_shlib_breaks = 1; | |
4571 | } | |
4572 | } | |
4573 | } | |
84acb35a JJ |
4574 | } |
4575 | ||
c906108c SS |
4576 | /* Try to reenable any breakpoints in shared libraries. */ |
4577 | void | |
fba45db2 | 4578 | re_enable_breakpoints_in_shlibs (void) |
c906108c | 4579 | { |
0101ce28 | 4580 | struct breakpoint *b, *tmp; |
c906108c | 4581 | |
0101ce28 JJ |
4582 | ALL_BREAKPOINTS_SAFE (b, tmp) |
4583 | { | |
b5de0fa7 | 4584 | if (b->enable_state == bp_shlib_disabled) |
0101ce28 | 4585 | { |
47b667de AC |
4586 | gdb_byte buf[1]; |
4587 | char *lib; | |
0101ce28 | 4588 | |
a77053c2 MK |
4589 | /* Do not reenable the breakpoint if the shared library is |
4590 | still not mapped in. */ | |
4591 | #ifdef PC_SOLIB | |
0101ce28 | 4592 | lib = PC_SOLIB (b->loc->address); |
a77053c2 MK |
4593 | #else |
4594 | lib = solib_address (b->loc->address); | |
4595 | #endif | |
0101ce28 JJ |
4596 | if (lib != NULL && target_read_memory (b->loc->address, buf, 1) == 0) |
4597 | b->enable_state = bp_enabled; | |
4598 | } | |
4599 | else if (b->pending && (b->enable_state == bp_enabled)) | |
4600 | { | |
4601 | if (resolve_pending_breakpoint (b) == GDB_RC_OK) | |
4602 | delete_breakpoint (b); | |
4603 | } | |
4604 | } | |
c906108c SS |
4605 | } |
4606 | ||
c906108c | 4607 | static void |
fba45db2 KB |
4608 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4609 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4610 | { |
c5aa993b | 4611 | struct breakpoint *b; |
c906108c | 4612 | struct symtabs_and_lines sals; |
c5aa993b JM |
4613 | struct cleanup *old_chain; |
4614 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4615 | char *addr_start = hookname; |
4616 | char *addr_end = NULL; | |
4617 | char **canonical = (char **) NULL; | |
4618 | int thread = -1; /* All threads. */ | |
4619 | ||
1272ad14 MS |
4620 | /* Set a breakpoint on the specified hook. */ |
4621 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, | |
4622 | 0, &canonical, NULL); | |
c906108c | 4623 | addr_end = hookname; |
c5aa993b | 4624 | |
c906108c SS |
4625 | if (sals.nelts == 0) |
4626 | { | |
8a3fe4f8 AC |
4627 | warning (_("Unable to set a breakpoint on dynamic linker callback.\n" |
4628 | "Suggest linking with /opt/langtools/lib/end.o.\n" | |
4629 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4630 | return; |
4631 | } | |
4632 | if (sals.nelts != 1) | |
4633 | { | |
8a3fe4f8 AC |
4634 | warning (_("Unable to set unique breakpoint on dynamic linker callback.\n" |
4635 | "GDB will be unable to track shl_load/shl_unload calls.")); | |
c906108c SS |
4636 | return; |
4637 | } | |
4638 | ||
53a5351d JM |
4639 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4640 | in case the following errors out. */ | |
b8c9b27d | 4641 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4642 | if (canonical != (char **) NULL) |
c906108c | 4643 | { |
b8c9b27d | 4644 | make_cleanup (xfree, canonical); |
c906108c SS |
4645 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4646 | if (canonical[0] != NULL) | |
b8c9b27d | 4647 | make_cleanup (xfree, canonical[0]); |
c906108c | 4648 | } |
c5aa993b | 4649 | |
c906108c | 4650 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4651 | |
c906108c | 4652 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4653 | if (canonical != (char **) NULL) |
c906108c | 4654 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4655 | |
4d28f7a8 | 4656 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4657 | set_breakpoint_count (breakpoint_count + 1); |
4658 | b->number = breakpoint_count; | |
4659 | b->cond = NULL; | |
53a5351d JM |
4660 | b->cond_string = (cond_string == NULL) ? |
4661 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4662 | b->thread = thread; |
c5aa993b JM |
4663 | |
4664 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4665 | b->addr_string = canonical[0]; |
4666 | else if (addr_start) | |
4667 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4668 | |
b5de0fa7 EZ |
4669 | b->enable_state = bp_enabled; |
4670 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c5aa993b | 4671 | |
c906108c SS |
4672 | if (dll_pathname == NULL) |
4673 | b->dll_pathname = NULL; | |
4674 | else | |
4675 | { | |
4676 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4677 | strcpy (b->dll_pathname, dll_pathname); | |
4678 | } | |
c5aa993b | 4679 | |
c906108c SS |
4680 | mention (b); |
4681 | do_cleanups (old_chain); | |
4682 | } | |
4683 | ||
4684 | void | |
fba45db2 KB |
4685 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4686 | char *dll_pathname, char *cond_string) | |
c906108c | 4687 | { |
53a5351d JM |
4688 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4689 | cond_string, bp_catch_load); | |
c906108c SS |
4690 | } |
4691 | ||
4692 | void | |
fba45db2 KB |
4693 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4694 | char *dll_pathname, char *cond_string) | |
c906108c | 4695 | { |
1272ad14 | 4696 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
53a5351d | 4697 | cond_string, bp_catch_unload); |
c906108c SS |
4698 | } |
4699 | ||
4700 | static void | |
fba45db2 KB |
4701 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4702 | enum bptype bp_kind) | |
c906108c | 4703 | { |
c5aa993b JM |
4704 | struct symtab_and_line sal; |
4705 | struct breakpoint *b; | |
4706 | int thread = -1; /* All threads. */ | |
4707 | ||
fe39c653 | 4708 | init_sal (&sal); |
c906108c SS |
4709 | sal.pc = 0; |
4710 | sal.symtab = NULL; | |
4711 | sal.line = 0; | |
c5aa993b | 4712 | |
4d28f7a8 | 4713 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4714 | set_breakpoint_count (breakpoint_count + 1); |
4715 | b->number = breakpoint_count; | |
4716 | b->cond = NULL; | |
53a5351d JM |
4717 | b->cond_string = (cond_string == NULL) ? |
4718 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4719 | b->thread = thread; |
4720 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4721 | b->enable_state = bp_enabled; |
4722 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4723 | b->forked_inferior_pid = 0; |
c5aa993b | 4724 | |
c906108c SS |
4725 | mention (b); |
4726 | } | |
4727 | ||
4728 | void | |
fba45db2 | 4729 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4730 | { |
4731 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4732 | } | |
c5aa993b | 4733 | |
c906108c | 4734 | void |
fba45db2 | 4735 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4736 | { |
4737 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4738 | } | |
4739 | ||
4740 | void | |
fba45db2 | 4741 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4742 | { |
c5aa993b JM |
4743 | struct symtab_and_line sal; |
4744 | struct breakpoint *b; | |
4745 | int thread = -1; /* All threads. */ | |
c906108c | 4746 | |
fe39c653 | 4747 | init_sal (&sal); |
c906108c SS |
4748 | sal.pc = 0; |
4749 | sal.symtab = NULL; | |
4750 | sal.line = 0; | |
4751 | ||
4d28f7a8 | 4752 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4753 | set_breakpoint_count (breakpoint_count + 1); |
4754 | b->number = breakpoint_count; | |
4755 | b->cond = NULL; | |
53a5351d JM |
4756 | b->cond_string = (cond_string == NULL) ? |
4757 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4758 | b->thread = thread; |
4759 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4760 | b->enable_state = bp_enabled; |
4761 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4762 | |
c906108c SS |
4763 | mention (b); |
4764 | } | |
4765 | ||
4766 | static int | |
fba45db2 | 4767 | hw_breakpoint_used_count (void) |
c906108c | 4768 | { |
52f0bd74 | 4769 | struct breakpoint *b; |
c906108c SS |
4770 | int i = 0; |
4771 | ||
4772 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4773 | { |
b5de0fa7 | 4774 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4775 | i++; |
4776 | } | |
c906108c SS |
4777 | |
4778 | return i; | |
4779 | } | |
4780 | ||
4781 | static int | |
fba45db2 | 4782 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4783 | { |
52f0bd74 | 4784 | struct breakpoint *b; |
c906108c SS |
4785 | int i = 0; |
4786 | ||
4787 | *other_type_used = 0; | |
4788 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4789 | { |
468d015d | 4790 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4791 | { |
4792 | if (b->type == type) | |
4793 | i++; | |
4794 | else if ((b->type == bp_hardware_watchpoint || | |
4795 | b->type == bp_read_watchpoint || | |
468d015d | 4796 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4797 | *other_type_used = 1; |
4798 | } | |
4799 | } | |
c906108c SS |
4800 | return i; |
4801 | } | |
4802 | ||
53a5351d JM |
4803 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4804 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4805 | |
53a5351d JM |
4806 | FIXME - This ought to be done by setting a temporary breakpoint |
4807 | that gets deleted automatically... */ | |
c906108c SS |
4808 | |
4809 | void | |
818dd999 | 4810 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_id frame_id) |
c906108c | 4811 | { |
52f0bd74 | 4812 | struct breakpoint *b; |
c906108c SS |
4813 | |
4814 | ALL_BREAKPOINTS (b) | |
4815 | if (b->type == bp_longjmp_resume) | |
c5aa993b | 4816 | { |
5cab636d | 4817 | b->loc->requested_address = pc; |
88f7da05 KB |
4818 | b->loc->address = adjust_breakpoint_address (b->loc->requested_address, |
4819 | b->type); | |
b5de0fa7 | 4820 | b->enable_state = bp_enabled; |
818dd999 | 4821 | b->frame_id = frame_id; |
9f60f21b | 4822 | check_duplicates (b); |
c5aa993b JM |
4823 | return; |
4824 | } | |
c906108c SS |
4825 | } |
4826 | ||
4827 | void | |
fba45db2 | 4828 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4829 | { |
c5aa993b | 4830 | struct breakpoint *b; |
c906108c SS |
4831 | |
4832 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4833 | { |
4834 | if (((b->type == bp_watchpoint) | |
4835 | || (b->type == bp_hardware_watchpoint) | |
4836 | || (b->type == bp_read_watchpoint) | |
4837 | || (b->type == bp_access_watchpoint) | |
4838 | || ep_is_exception_catchpoint (b)) | |
468d015d | 4839 | && breakpoint_enabled (b)) |
c5aa993b | 4840 | { |
b5de0fa7 | 4841 | b->enable_state = bp_call_disabled; |
9f60f21b | 4842 | check_duplicates (b); |
c5aa993b JM |
4843 | } |
4844 | } | |
c906108c SS |
4845 | } |
4846 | ||
4847 | void | |
fba45db2 | 4848 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4849 | { |
c5aa993b | 4850 | struct breakpoint *b; |
c906108c SS |
4851 | |
4852 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4853 | { |
4854 | if (((b->type == bp_watchpoint) | |
4855 | || (b->type == bp_hardware_watchpoint) | |
4856 | || (b->type == bp_read_watchpoint) | |
4857 | || (b->type == bp_access_watchpoint) | |
4858 | || ep_is_exception_catchpoint (b)) | |
b5de0fa7 | 4859 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4860 | { |
b5de0fa7 | 4861 | b->enable_state = bp_enabled; |
9f60f21b | 4862 | check_duplicates (b); |
c5aa993b JM |
4863 | } |
4864 | } | |
c906108c SS |
4865 | } |
4866 | ||
4867 | ||
4868 | /* Set a breakpoint that will evaporate an end of command | |
4869 | at address specified by SAL. | |
4870 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4871 | ||
4872 | struct breakpoint * | |
818dd999 | 4873 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4874 | enum bptype type) |
c906108c | 4875 | { |
52f0bd74 | 4876 | struct breakpoint *b; |
4d28f7a8 | 4877 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4878 | b->enable_state = bp_enabled; |
4879 | b->disposition = disp_donttouch; | |
818dd999 | 4880 | b->frame_id = frame_id; |
c906108c SS |
4881 | |
4882 | /* If we're debugging a multi-threaded program, then we | |
4883 | want momentary breakpoints to be active in only a | |
4884 | single thread of control. */ | |
39f77062 KB |
4885 | if (in_thread_list (inferior_ptid)) |
4886 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4887 | |
4888 | return b; | |
4889 | } | |
c906108c | 4890 | \f |
c5aa993b | 4891 | |
c906108c SS |
4892 | /* Tell the user we have just set a breakpoint B. */ |
4893 | ||
4894 | static void | |
fba45db2 | 4895 | mention (struct breakpoint *b) |
c906108c SS |
4896 | { |
4897 | int say_where = 0; | |
3b31d625 | 4898 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4899 | struct ui_stream *stb; |
4900 | ||
4901 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4902 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4903 | |
9a4105ab AC |
4904 | /* FIXME: This is misplaced; mention() is called by things (like |
4905 | hitting a watchpoint) other than breakpoint creation. It should | |
4906 | be possible to clean this up and at the same time replace the | |
4907 | random calls to breakpoint_changed with this hook, as has already | |
4908 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4909 | if (deprecated_create_breakpoint_hook) | |
4910 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4911 | breakpoint_create_event (b->number); |
c906108c | 4912 | |
3086aeae DJ |
4913 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4914 | b->ops->print_mention (b); | |
4915 | else | |
4916 | switch (b->type) | |
4917 | { | |
4918 | case bp_none: | |
a3f17187 | 4919 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4920 | break; |
4921 | case bp_watchpoint: | |
4922 | ui_out_text (uiout, "Watchpoint "); | |
4923 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4924 | ui_out_field_int (uiout, "number", b->number); | |
4925 | ui_out_text (uiout, ": "); | |
4926 | print_expression (b->exp, stb->stream); | |
4927 | ui_out_field_stream (uiout, "exp", stb); | |
4928 | do_cleanups (ui_out_chain); | |
4929 | break; | |
4930 | case bp_hardware_watchpoint: | |
4931 | ui_out_text (uiout, "Hardware watchpoint "); | |
4932 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4933 | ui_out_field_int (uiout, "number", b->number); | |
4934 | ui_out_text (uiout, ": "); | |
4935 | print_expression (b->exp, stb->stream); | |
4936 | ui_out_field_stream (uiout, "exp", stb); | |
4937 | do_cleanups (ui_out_chain); | |
4938 | break; | |
4939 | case bp_read_watchpoint: | |
4940 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4941 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4942 | ui_out_field_int (uiout, "number", b->number); | |
4943 | ui_out_text (uiout, ": "); | |
4944 | print_expression (b->exp, stb->stream); | |
4945 | ui_out_field_stream (uiout, "exp", stb); | |
4946 | do_cleanups (ui_out_chain); | |
4947 | break; | |
4948 | case bp_access_watchpoint: | |
4949 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4950 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4951 | ui_out_field_int (uiout, "number", b->number); | |
4952 | ui_out_text (uiout, ": "); | |
4953 | print_expression (b->exp, stb->stream); | |
4954 | ui_out_field_stream (uiout, "exp", stb); | |
4955 | do_cleanups (ui_out_chain); | |
4956 | break; | |
4957 | case bp_breakpoint: | |
4958 | if (ui_out_is_mi_like_p (uiout)) | |
4959 | { | |
4960 | say_where = 0; | |
4961 | break; | |
4962 | } | |
a3f17187 | 4963 | printf_filtered (_("Breakpoint %d"), b->number); |
3086aeae DJ |
4964 | say_where = 1; |
4965 | break; | |
4966 | case bp_hardware_breakpoint: | |
4967 | if (ui_out_is_mi_like_p (uiout)) | |
4968 | { | |
4969 | say_where = 0; | |
4970 | break; | |
4971 | } | |
a3f17187 | 4972 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4973 | say_where = 1; |
4974 | break; | |
4975 | case bp_catch_load: | |
4976 | case bp_catch_unload: | |
a3f17187 | 4977 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4978 | b->number, |
4979 | (b->type == bp_catch_load) ? "load" : "unload", | |
4980 | (b->dll_pathname != NULL) ? | |
4981 | b->dll_pathname : "<any library>"); | |
4982 | break; | |
4983 | case bp_catch_fork: | |
4984 | case bp_catch_vfork: | |
a3f17187 | 4985 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4986 | b->number, |
4987 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4988 | break; | |
4989 | case bp_catch_exec: | |
a3f17187 | 4990 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4991 | b->number); |
4992 | break; | |
4993 | case bp_catch_catch: | |
4994 | case bp_catch_throw: | |
a3f17187 | 4995 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4996 | b->number, |
4997 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
4998 | break; | |
4999 | ||
5000 | case bp_until: | |
5001 | case bp_finish: | |
5002 | case bp_longjmp: | |
5003 | case bp_longjmp_resume: | |
5004 | case bp_step_resume: | |
5005 | case bp_through_sigtramp: | |
5006 | case bp_call_dummy: | |
5007 | case bp_watchpoint_scope: | |
5008 | case bp_shlib_event: | |
5009 | case bp_thread_event: | |
5010 | case bp_overlay_event: | |
5011 | break; | |
5012 | } | |
c906108c | 5013 | |
c906108c SS |
5014 | if (say_where) |
5015 | { | |
a3f17187 AC |
5016 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5017 | single string. */ | |
0101ce28 | 5018 | if (b->pending) |
c906108c | 5019 | { |
a3f17187 | 5020 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5021 | } |
5022 | else | |
5023 | { | |
5024 | if (addressprint || b->source_file == NULL) | |
5025 | { | |
5026 | printf_filtered (" at "); | |
66bf4b3a | 5027 | deprecated_print_address_numeric (b->loc->address, 1, gdb_stdout); |
0101ce28 JJ |
5028 | } |
5029 | if (b->source_file) | |
5030 | printf_filtered (": file %s, line %d.", | |
5031 | b->source_file, b->line_number); | |
c906108c | 5032 | } |
c906108c | 5033 | } |
8b93c638 | 5034 | do_cleanups (old_chain); |
9dc5e2a9 | 5035 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5036 | return; |
c906108c SS |
5037 | printf_filtered ("\n"); |
5038 | } | |
c906108c | 5039 | \f |
c5aa993b | 5040 | |
c3f6f71d JM |
5041 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5042 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
5043 | COND[i] and COND_STRING[i] values. | |
5044 | ||
0101ce28 JJ |
5045 | The parameter PENDING_BP points to a pending breakpoint that is |
5046 | the basis of the breakpoints currently being created. The pending | |
5047 | breakpoint may contain a separate condition string or commands | |
5048 | that were added after the initial pending breakpoint was created. | |
5049 | ||
c3f6f71d JM |
5050 | NOTE: If the function succeeds, the caller is expected to cleanup |
5051 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
5052 | array contents). If the function fails (error() is called), the | |
5053 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5054 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5055 | |
5056 | static void | |
c3f6f71d JM |
5057 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
5058 | struct expression **cond, char **cond_string, | |
5059 | enum bptype type, enum bpdisp disposition, | |
0101ce28 JJ |
5060 | int thread, int ignore_count, int from_tty, |
5061 | struct breakpoint *pending_bp) | |
c906108c | 5062 | { |
c3f6f71d JM |
5063 | if (type == bp_hardware_breakpoint) |
5064 | { | |
5065 | int i = hw_breakpoint_used_count (); | |
5066 | int target_resources_ok = | |
5067 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5068 | i + sals.nelts, 0); | |
5069 | if (target_resources_ok == 0) | |
8a3fe4f8 | 5070 | error (_("No hardware breakpoint support in the target.")); |
c3f6f71d | 5071 | else if (target_resources_ok < 0) |
8a3fe4f8 | 5072 | error (_("Hardware breakpoints used exceeds limit.")); |
c3f6f71d | 5073 | } |
c906108c | 5074 | |
c3f6f71d JM |
5075 | /* Now set all the breakpoints. */ |
5076 | { | |
5077 | int i; | |
5078 | for (i = 0; i < sals.nelts; i++) | |
5079 | { | |
5080 | struct breakpoint *b; | |
5081 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 5082 | |
c3f6f71d | 5083 | if (from_tty) |
d674a25c | 5084 | describe_other_breakpoints (sal.pc, sal.section, thread); |
c3f6f71d | 5085 | |
4d28f7a8 | 5086 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
5087 | set_breakpoint_count (breakpoint_count + 1); |
5088 | b->number = breakpoint_count; | |
c3f6f71d JM |
5089 | b->cond = cond[i]; |
5090 | b->thread = thread; | |
d8ef46f5 DJ |
5091 | if (addr_string[i]) |
5092 | b->addr_string = addr_string[i]; | |
5093 | else | |
5094 | /* addr_string has to be used or breakpoint_re_set will delete | |
5095 | me. */ | |
b435e160 | 5096 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c3f6f71d JM |
5097 | b->cond_string = cond_string[i]; |
5098 | b->ignore_count = ignore_count; | |
b5de0fa7 | 5099 | b->enable_state = bp_enabled; |
c3f6f71d | 5100 | b->disposition = disposition; |
0101ce28 JJ |
5101 | /* If resolving a pending breakpoint, a check must be made to see if |
5102 | the user has specified a new condition or commands for the | |
5103 | breakpoint. A new condition will override any condition that was | |
5104 | initially specified with the initial breakpoint command. */ | |
5105 | if (pending_bp) | |
5106 | { | |
5107 | char *arg; | |
5108 | if (pending_bp->cond_string) | |
5109 | { | |
5110 | arg = pending_bp->cond_string; | |
5111 | b->cond_string = savestring (arg, strlen (arg)); | |
5112 | b->cond = parse_exp_1 (&arg, block_for_pc (b->loc->address), 0); | |
5113 | if (*arg) | |
8a3fe4f8 | 5114 | error (_("Junk at end of pending breakpoint condition expression")); |
0101ce28 JJ |
5115 | } |
5116 | /* If there are commands associated with the breakpoint, they should | |
5117 | be copied too. */ | |
5118 | if (pending_bp->commands) | |
5119 | b->commands = copy_command_lines (pending_bp->commands); | |
0a5e7efe JI |
5120 | |
5121 | /* We have to copy over the ignore_count and thread as well. */ | |
5122 | b->ignore_count = pending_bp->ignore_count; | |
5123 | b->thread = pending_bp->thread; | |
0101ce28 | 5124 | } |
c3f6f71d JM |
5125 | mention (b); |
5126 | } | |
5127 | } | |
5128 | } | |
c906108c | 5129 | |
c3f6f71d JM |
5130 | /* Parse ARG which is assumed to be a SAL specification possibly |
5131 | followed by conditionals. On return, SALS contains an array of SAL | |
5132 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5133 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5134 | |
b9362cc7 | 5135 | static void |
c3f6f71d JM |
5136 | parse_breakpoint_sals (char **address, |
5137 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5138 | char ***addr_string, |
5139 | int *not_found_ptr) | |
c3f6f71d JM |
5140 | { |
5141 | char *addr_start = *address; | |
5142 | *addr_string = NULL; | |
5143 | /* If no arg given, or if first arg is 'if ', use the default | |
5144 | breakpoint. */ | |
5145 | if ((*address) == NULL | |
5146 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5147 | { |
5148 | if (default_breakpoint_valid) | |
5149 | { | |
c3f6f71d | 5150 | struct symtab_and_line sal; |
fe39c653 | 5151 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5152 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5153 | xmalloc (sizeof (struct symtab_and_line)); |
5154 | sal.pc = default_breakpoint_address; | |
5155 | sal.line = default_breakpoint_line; | |
5156 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5157 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5158 | sals->sals[0] = sal; |
5159 | sals->nelts = 1; | |
c906108c SS |
5160 | } |
5161 | else | |
8a3fe4f8 | 5162 | error (_("No default breakpoint address now.")); |
c906108c SS |
5163 | } |
5164 | else | |
5165 | { | |
c906108c | 5166 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5167 | current_source_symtab (which is decode_line_1's default). This |
5168 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5169 | leaving default_breakpoint_* alone. |
5170 | ObjC: However, don't match an Objective-C method name which | |
5171 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5172 | |
c214a6fd | 5173 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5174 | |
c906108c | 5175 | if (default_breakpoint_valid |
0378c332 | 5176 | && (!cursal.symtab |
1aeae86e AF |
5177 | || ((strchr ("+-", (*address)[0]) != NULL) |
5178 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5179 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5180 | default_breakpoint_line, addr_string, |
5181 | not_found_ptr); | |
c906108c | 5182 | else |
0101ce28 JJ |
5183 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5184 | addr_string, not_found_ptr); | |
c906108c | 5185 | } |
c3f6f71d JM |
5186 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5187 | if (sals->nelts > 0 && *addr_string == NULL) | |
5188 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5189 | if (addr_start != (*address)) | |
c906108c | 5190 | { |
c3f6f71d JM |
5191 | int i; |
5192 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5193 | { |
c3f6f71d JM |
5194 | /* Add the string if not present. */ |
5195 | if ((*addr_string)[i] == NULL) | |
5196 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5197 | } |
5198 | } | |
c3f6f71d | 5199 | } |
c906108c | 5200 | |
c906108c | 5201 | |
c3f6f71d JM |
5202 | /* Convert each SAL into a real PC. Verify that the PC can be |
5203 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5204 | |
b9362cc7 | 5205 | static void |
c3f6f71d JM |
5206 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5207 | char *address) | |
5208 | { | |
5209 | int i; | |
5210 | for (i = 0; i < sals->nelts; i++) | |
5211 | { | |
5212 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
5213 | |
5214 | /* It's possible for the PC to be nonzero, but still an illegal | |
5215 | value on some targets. | |
5216 | ||
5217 | For example, on HP-UX if you start gdb, and before running the | |
5218 | inferior you try to set a breakpoint on a shared library function | |
5219 | "foo" where the inferior doesn't call "foo" directly but does | |
5220 | pass its address to another function call, then we do find a | |
5221 | minimal symbol for the "foo", but it's address is invalid. | |
5222 | (Appears to be an index into a table that the loader sets up | |
5223 | when the inferior is run.) | |
5224 | ||
5225 | Give the target a chance to bless sals.sals[i].pc before we | |
5226 | try to make a breakpoint for it. */ | |
45b75230 AC |
5227 | #ifdef DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE |
5228 | if (DEPRECATED_PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) | |
c5aa993b | 5229 | { |
c3f6f71d | 5230 | if (address == NULL) |
8a3fe4f8 | 5231 | error (_("Cannot break without a running program.")); |
c3f6f71d | 5232 | else |
8a3fe4f8 | 5233 | error (_("Cannot break on %s without a running program."), |
c3f6f71d | 5234 | address); |
c5aa993b | 5235 | } |
45b75230 | 5236 | #endif |
c3f6f71d JM |
5237 | } |
5238 | } | |
5239 | ||
05ff989b | 5240 | static void |
0101ce28 JJ |
5241 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5242 | { | |
5243 | struct captured_parse_breakpoint_args *args = data; | |
5244 | ||
5245 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5246 | args->not_found_ptr); | |
0101ce28 JJ |
5247 | } |
5248 | ||
c3f6f71d JM |
5249 | /* Set a breakpoint according to ARG (function, linenum or *address) |
5250 | flag: first bit : 0 non-temporary, 1 temporary. | |
0101ce28 | 5251 | second bit : 0 normal breakpoint, 1 hardware breakpoint. |
c5aa993b | 5252 | |
0101ce28 JJ |
5253 | PENDING_BP is non-NULL when this function is being called to resolve |
5254 | a pending breakpoint. */ | |
5255 | ||
5256 | static int | |
5257 | break_command_1 (char *arg, int flag, int from_tty, struct breakpoint *pending_bp) | |
c3f6f71d | 5258 | { |
71fff37b | 5259 | struct gdb_exception e; |
c3f6f71d JM |
5260 | int tempflag, hardwareflag; |
5261 | struct symtabs_and_lines sals; | |
52f0bd74 | 5262 | struct expression **cond = 0; |
0101ce28 | 5263 | struct symtab_and_line pending_sal; |
c3f6f71d | 5264 | char **cond_string = (char **) NULL; |
0101ce28 JJ |
5265 | char *copy_arg; |
5266 | char *err_msg; | |
c3f6f71d JM |
5267 | char *addr_start = arg; |
5268 | char **addr_string; | |
5269 | struct cleanup *old_chain; | |
5270 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5271 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5272 | int i; |
0101ce28 | 5273 | int pending = 0; |
c3f6f71d JM |
5274 | int thread = -1; |
5275 | int ignore_count = 0; | |
0101ce28 | 5276 | int not_found = 0; |
c3f6f71d JM |
5277 | |
5278 | hardwareflag = flag & BP_HARDWAREFLAG; | |
5279 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 5280 | |
c3f6f71d JM |
5281 | sals.sals = NULL; |
5282 | sals.nelts = 0; | |
5283 | addr_string = NULL; | |
c3f6f71d | 5284 | |
0101ce28 JJ |
5285 | parse_args.arg_p = &arg; |
5286 | parse_args.sals_p = &sals; | |
5287 | parse_args.addr_string_p = &addr_string; | |
5288 | parse_args.not_found_ptr = ¬_found; | |
5289 | ||
05ff989b AC |
5290 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5291 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5292 | |
5293 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5294 | switch (e.reason) |
0101ce28 | 5295 | { |
05ff989b | 5296 | case RETURN_QUIT: |
9cbc821d | 5297 | exception_print (gdb_stderr, e); |
05ff989b AC |
5298 | return e.reason; |
5299 | case RETURN_ERROR: | |
5300 | switch (e.error) | |
0101ce28 | 5301 | { |
05ff989b AC |
5302 | case NOT_FOUND_ERROR: |
5303 | /* If called to resolve pending breakpoint, just return | |
5304 | error code. */ | |
0101ce28 | 5305 | if (pending_bp) |
05ff989b | 5306 | return e.reason; |
0101ce28 | 5307 | |
9cbc821d | 5308 | exception_print (gdb_stderr, e); |
fa8d40ab | 5309 | |
05ff989b AC |
5310 | /* If pending breakpoint support is turned off, throw |
5311 | error. */ | |
fa8d40ab JJ |
5312 | |
5313 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
315a522e | 5314 | deprecated_throw_reason (RETURN_ERROR); |
fa8d40ab | 5315 | |
05ff989b AC |
5316 | /* If pending breakpoint support is auto query and the user |
5317 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5318 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5319 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
05ff989b | 5320 | return e.reason; |
fa8d40ab | 5321 | |
05ff989b AC |
5322 | /* At this point, either the user was queried about setting |
5323 | a pending breakpoint and selected yes, or pending | |
5324 | breakpoint behavior is on and thus a pending breakpoint | |
5325 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5326 | copy_arg = xstrdup (addr_start); |
5327 | addr_string = ©_arg; | |
5328 | sals.nelts = 1; | |
5329 | sals.sals = &pending_sal; | |
5330 | pending_sal.pc = 0; | |
5331 | pending = 1; | |
05ff989b AC |
5332 | break; |
5333 | default: | |
9cbc821d | 5334 | exception_print (gdb_stderr, e); |
05ff989b | 5335 | return e.reason; |
0101ce28 | 5336 | } |
05ff989b AC |
5337 | default: |
5338 | if (!sals.nelts) | |
5339 | return GDB_RC_FAIL; | |
0101ce28 | 5340 | } |
c3f6f71d JM |
5341 | |
5342 | /* Create a chain of things that always need to be cleaned up. */ | |
5343 | old_chain = make_cleanup (null_cleanup, 0); | |
5344 | ||
0101ce28 JJ |
5345 | if (!pending) |
5346 | { | |
5347 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5348 | make_cleanup (xfree, sals.sals); | |
5349 | ||
5350 | /* Cleanup the addr_string array but not its contents. */ | |
5351 | make_cleanup (xfree, addr_string); | |
5352 | } | |
c3f6f71d JM |
5353 | |
5354 | /* Allocate space for all the cond expressions. */ | |
5355 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5356 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5357 | |
5358 | /* Allocate space for all the cond strings. */ | |
5359 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5360 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5361 | |
5362 | /* ----------------------------- SNIP ----------------------------- | |
5363 | Anything added to the cleanup chain beyond this point is assumed | |
5364 | to be part of a breakpoint. If the breakpoint create succeeds | |
5365 | then the memory is not reclaimed. */ | |
5366 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5367 | ||
5368 | /* Mark the contents of the addr_string for cleanup. These go on | |
5369 | the breakpoint_chain and only occure if the breakpoint create | |
5370 | fails. */ | |
5371 | for (i = 0; i < sals.nelts; i++) | |
5372 | { | |
5373 | if (addr_string[i] != NULL) | |
b8c9b27d | 5374 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5375 | } |
5376 | ||
5377 | /* Resolve all line numbers to PC's and verify that the addresses | |
5378 | are ok for the target. */ | |
0101ce28 JJ |
5379 | if (!pending) |
5380 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5381 | |
5382 | /* Verify that condition can be parsed, before setting any | |
5383 | breakpoints. Allocate a separate condition expression for each | |
5384 | breakpoint. */ | |
5385 | thread = -1; /* No specific thread yet */ | |
0101ce28 | 5386 | if (!pending) |
c3f6f71d | 5387 | { |
0101ce28 | 5388 | for (i = 0; i < sals.nelts; i++) |
c906108c | 5389 | { |
0101ce28 JJ |
5390 | char *tok = arg; |
5391 | while (tok && *tok) | |
c906108c | 5392 | { |
0101ce28 JJ |
5393 | char *end_tok; |
5394 | int toklen; | |
5395 | char *cond_start = NULL; | |
5396 | char *cond_end = NULL; | |
5397 | while (*tok == ' ' || *tok == '\t') | |
5398 | tok++; | |
5399 | ||
5400 | end_tok = tok; | |
5401 | ||
5402 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5403 | end_tok++; | |
5404 | ||
5405 | toklen = end_tok - tok; | |
5406 | ||
5407 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5408 | { | |
5409 | tok = cond_start = end_tok + 1; | |
5410 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), | |
5411 | 0); | |
5412 | make_cleanup (xfree, cond[i]); | |
5413 | cond_end = tok; | |
5414 | cond_string[i] = savestring (cond_start, | |
5415 | cond_end - cond_start); | |
5416 | make_cleanup (xfree, cond_string[i]); | |
5417 | } | |
5418 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5419 | { | |
5420 | char *tmptok; | |
5421 | ||
5422 | tok = end_tok + 1; | |
5423 | tmptok = tok; | |
5424 | thread = strtol (tok, &tok, 0); | |
5425 | if (tok == tmptok) | |
8a3fe4f8 | 5426 | error (_("Junk after thread keyword.")); |
0101ce28 | 5427 | if (!valid_thread_id (thread)) |
8a3fe4f8 | 5428 | error (_("Unknown thread %d."), thread); |
0101ce28 JJ |
5429 | } |
5430 | else | |
8a3fe4f8 | 5431 | error (_("Junk at end of arguments.")); |
c906108c | 5432 | } |
c906108c | 5433 | } |
0101ce28 JJ |
5434 | create_breakpoints (sals, addr_string, cond, cond_string, |
5435 | hardwareflag ? bp_hardware_breakpoint | |
5436 | : bp_breakpoint, | |
5437 | tempflag ? disp_del : disp_donttouch, | |
5438 | thread, ignore_count, from_tty, | |
5439 | pending_bp); | |
c906108c | 5440 | } |
0101ce28 JJ |
5441 | else |
5442 | { | |
5443 | struct symtab_and_line sal; | |
5444 | struct breakpoint *b; | |
5445 | ||
5446 | sal.symtab = NULL; | |
5447 | sal.pc = 0; | |
5448 | ||
5449 | make_cleanup (xfree, copy_arg); | |
5450 | ||
5451 | b = set_raw_breakpoint (sal, hardwareflag ? bp_hardware_breakpoint | |
5452 | : bp_breakpoint); | |
5453 | set_breakpoint_count (breakpoint_count + 1); | |
5454 | b->number = breakpoint_count; | |
5455 | b->cond = *cond; | |
5456 | b->thread = thread; | |
5457 | b->addr_string = *addr_string; | |
5458 | b->cond_string = *cond_string; | |
5459 | b->ignore_count = ignore_count; | |
5460 | b->pending = 1; | |
5461 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
5462 | b->from_tty = from_tty; | |
5463 | b->flag = flag; | |
5464 | mention (b); | |
5465 | } | |
5466 | ||
c3f6f71d | 5467 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5468 | warning (_("Multiple breakpoints were set.\n" |
5469 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5470 | /* That's it. Discard the cleanups for data inserted into the |
5471 | breakpoint. */ | |
5472 | discard_cleanups (breakpoint_chain); | |
5473 | /* But cleanup everything else. */ | |
5474 | do_cleanups (old_chain); | |
0101ce28 JJ |
5475 | |
5476 | return GDB_RC_OK; | |
c3f6f71d | 5477 | } |
c906108c | 5478 | |
c3f6f71d JM |
5479 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
5480 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 5481 | |
c3f6f71d JM |
5482 | struct captured_breakpoint_args |
5483 | { | |
5484 | char *address; | |
5485 | char *condition; | |
5486 | int hardwareflag; | |
5487 | int tempflag; | |
5488 | int thread; | |
5489 | int ignore_count; | |
5490 | }; | |
5491 | ||
5492 | static int | |
ce43223b | 5493 | do_captured_breakpoint (struct ui_out *uiout, void *data) |
c3f6f71d JM |
5494 | { |
5495 | struct captured_breakpoint_args *args = data; | |
5496 | struct symtabs_and_lines sals; | |
52f0bd74 | 5497 | struct expression **cond; |
c3f6f71d JM |
5498 | struct cleanup *old_chain; |
5499 | struct cleanup *breakpoint_chain = NULL; | |
5500 | int i; | |
5501 | char **addr_string; | |
5502 | char **cond_string; | |
5503 | ||
5504 | char *address_end; | |
5505 | ||
5506 | /* Parse the source and lines spec. Delay check that the expression | |
5507 | didn't contain trailing garbage until after cleanups are in | |
5508 | place. */ | |
5509 | sals.sals = NULL; | |
5510 | sals.nelts = 0; | |
5511 | address_end = args->address; | |
5512 | addr_string = NULL; | |
0101ce28 | 5513 | parse_breakpoint_sals (&address_end, &sals, &addr_string, 0); |
c3f6f71d JM |
5514 | |
5515 | if (!sals.nelts) | |
5516 | return GDB_RC_NONE; | |
5517 | ||
5518 | /* Create a chain of things at always need to be cleaned up. */ | |
5519 | old_chain = make_cleanup (null_cleanup, 0); | |
5520 | ||
5521 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 5522 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
5523 | |
5524 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 5525 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
5526 | |
5527 | /* Allocate space for all the cond expressions. */ | |
5528 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 5529 | make_cleanup (xfree, cond); |
c3f6f71d JM |
5530 | |
5531 | /* Allocate space for all the cond strings. */ | |
5532 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 5533 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
5534 | |
5535 | /* ----------------------------- SNIP ----------------------------- | |
5536 | Anything added to the cleanup chain beyond this point is assumed | |
5537 | to be part of a breakpoint. If the breakpoint create goes | |
5538 | through then that memory is not cleaned up. */ | |
5539 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5540 | ||
5541 | /* Mark the contents of the addr_string for cleanup. These go on | |
5542 | the breakpoint_chain and only occure if the breakpoint create | |
5543 | fails. */ | |
c906108c SS |
5544 | for (i = 0; i < sals.nelts; i++) |
5545 | { | |
c3f6f71d | 5546 | if (addr_string[i] != NULL) |
b8c9b27d | 5547 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
5548 | } |
5549 | ||
c3f6f71d JM |
5550 | /* Wait until now before checking for garbage at the end of the |
5551 | address. That way cleanups can take care of freeing any | |
5552 | memory. */ | |
5553 | if (*address_end != '\0') | |
8a3fe4f8 | 5554 | error (_("Garbage %s following breakpoint address"), address_end); |
c3f6f71d JM |
5555 | |
5556 | /* Resolve all line numbers to PC's. */ | |
5557 | breakpoint_sals_to_pc (&sals, args->address); | |
5558 | ||
5559 | /* Verify that conditions can be parsed, before setting any | |
5560 | breakpoints. */ | |
5561 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 5562 | { |
c3f6f71d JM |
5563 | if (args->condition != NULL) |
5564 | { | |
5565 | char *tok = args->condition; | |
5566 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
5567 | if (*tok != '\0') | |
8a3fe4f8 | 5568 | error (_("Garbage %s follows condition"), tok); |
b8c9b27d | 5569 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
5570 | cond_string[i] = xstrdup (args->condition); |
5571 | } | |
c906108c | 5572 | } |
c3f6f71d JM |
5573 | |
5574 | create_breakpoints (sals, addr_string, cond, cond_string, | |
5575 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
b5de0fa7 | 5576 | args->tempflag ? disp_del : disp_donttouch, |
0101ce28 JJ |
5577 | args->thread, args->ignore_count, 0/*from-tty*/, |
5578 | NULL/*pending_bp*/); | |
c3f6f71d JM |
5579 | |
5580 | /* That's it. Discard the cleanups for data inserted into the | |
5581 | breakpoint. */ | |
5582 | discard_cleanups (breakpoint_chain); | |
5583 | /* But cleanup everything else. */ | |
c906108c | 5584 | do_cleanups (old_chain); |
c3f6f71d | 5585 | return GDB_RC_OK; |
c906108c SS |
5586 | } |
5587 | ||
c3f6f71d JM |
5588 | enum gdb_rc |
5589 | gdb_breakpoint (char *address, char *condition, | |
5590 | int hardwareflag, int tempflag, | |
ce43223b AC |
5591 | int thread, int ignore_count, |
5592 | char **error_message) | |
c3f6f71d JM |
5593 | { |
5594 | struct captured_breakpoint_args args; | |
5595 | args.address = address; | |
5596 | args.condition = condition; | |
5597 | args.hardwareflag = hardwareflag; | |
5598 | args.tempflag = tempflag; | |
5599 | args.thread = thread; | |
5600 | args.ignore_count = ignore_count; | |
ce43223b | 5601 | return catch_exceptions_with_msg (uiout, do_captured_breakpoint, &args, |
1c3c7ee7 | 5602 | error_message, RETURN_MASK_ALL); |
c3f6f71d JM |
5603 | } |
5604 | ||
5605 | ||
c906108c SS |
5606 | /* Helper function for break_command_1 and disassemble_command. */ |
5607 | ||
5608 | void | |
fba45db2 | 5609 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5610 | { |
5611 | CORE_ADDR pc; | |
5612 | ||
5613 | if (sal->pc == 0 && sal->symtab != NULL) | |
5614 | { | |
5615 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5616 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5617 | sal->line, sal->symtab->filename); |
5618 | sal->pc = pc; | |
5619 | } | |
5620 | ||
5621 | if (sal->section == 0 && sal->symtab != NULL) | |
5622 | { | |
5623 | struct blockvector *bv; | |
c5aa993b JM |
5624 | struct block *b; |
5625 | struct symbol *sym; | |
5626 | int index; | |
c906108c | 5627 | |
c5aa993b | 5628 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5629 | if (bv != NULL) |
5630 | { | |
c5aa993b | 5631 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5632 | sym = block_function (b); |
5633 | if (sym != NULL) | |
5634 | { | |
5635 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5636 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5637 | } | |
5638 | else | |
5639 | { | |
5640 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5641 | have to look harder. This case can be executed if we have |
5642 | line numbers but no functions (as can happen in assembly | |
5643 | source). */ | |
c906108c | 5644 | |
c5aa993b | 5645 | struct minimal_symbol *msym; |
c906108c SS |
5646 | |
5647 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5648 | if (msym) | |
5649 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5650 | } | |
5651 | } | |
5652 | } | |
5653 | } | |
5654 | ||
5655 | void | |
fba45db2 | 5656 | break_command (char *arg, int from_tty) |
c906108c | 5657 | { |
0101ce28 | 5658 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5659 | } |
5660 | ||
c906108c | 5661 | void |
fba45db2 | 5662 | tbreak_command (char *arg, int from_tty) |
c906108c | 5663 | { |
0101ce28 | 5664 | break_command_1 (arg, BP_TEMPFLAG, from_tty, NULL); |
c906108c SS |
5665 | } |
5666 | ||
c906108c | 5667 | static void |
fba45db2 | 5668 | hbreak_command (char *arg, int from_tty) |
c906108c | 5669 | { |
0101ce28 | 5670 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty, NULL); |
c906108c SS |
5671 | } |
5672 | ||
5673 | static void | |
fba45db2 | 5674 | thbreak_command (char *arg, int from_tty) |
c906108c | 5675 | { |
0101ce28 | 5676 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty, NULL); |
c906108c SS |
5677 | } |
5678 | ||
5679 | static void | |
fba45db2 | 5680 | stop_command (char *arg, int from_tty) |
c906108c | 5681 | { |
a3f17187 | 5682 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5683 | Usage: stop in <function | address>\n\ |
a3f17187 | 5684 | stop at <line>\n")); |
c906108c SS |
5685 | } |
5686 | ||
5687 | static void | |
fba45db2 | 5688 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5689 | { |
5690 | int badInput = 0; | |
5691 | ||
c5aa993b | 5692 | if (arg == (char *) NULL) |
c906108c SS |
5693 | badInput = 1; |
5694 | else if (*arg != '*') | |
5695 | { | |
5696 | char *argptr = arg; | |
5697 | int hasColon = 0; | |
5698 | ||
53a5351d JM |
5699 | /* look for a ':'. If this is a line number specification, then |
5700 | say it is bad, otherwise, it should be an address or | |
5701 | function/method name */ | |
c906108c | 5702 | while (*argptr && !hasColon) |
c5aa993b JM |
5703 | { |
5704 | hasColon = (*argptr == ':'); | |
5705 | argptr++; | |
5706 | } | |
c906108c SS |
5707 | |
5708 | if (hasColon) | |
c5aa993b | 5709 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5710 | else |
c5aa993b | 5711 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5712 | } |
5713 | ||
5714 | if (badInput) | |
a3f17187 | 5715 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5716 | else |
0101ce28 | 5717 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5718 | } |
5719 | ||
5720 | static void | |
fba45db2 | 5721 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5722 | { |
5723 | int badInput = 0; | |
5724 | ||
c5aa993b | 5725 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5726 | badInput = 1; |
5727 | else | |
5728 | { | |
5729 | char *argptr = arg; | |
5730 | int hasColon = 0; | |
5731 | ||
5732 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5733 | it is probably a line number. */ |
c906108c | 5734 | while (*argptr && !hasColon) |
c5aa993b JM |
5735 | { |
5736 | hasColon = (*argptr == ':'); | |
5737 | argptr++; | |
5738 | } | |
c906108c SS |
5739 | |
5740 | if (hasColon) | |
c5aa993b | 5741 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5742 | else |
c5aa993b | 5743 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5744 | } |
5745 | ||
5746 | if (badInput) | |
a3f17187 | 5747 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5748 | else |
0101ce28 | 5749 | break_command_1 (arg, 0, from_tty, NULL); |
c906108c SS |
5750 | } |
5751 | ||
53a5351d JM |
5752 | /* accessflag: hw_write: watch write, |
5753 | hw_read: watch read, | |
5754 | hw_access: watch access (read or write) */ | |
c906108c | 5755 | static void |
fba45db2 | 5756 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5757 | { |
5758 | struct breakpoint *b; | |
5759 | struct symtab_and_line sal; | |
5760 | struct expression *exp; | |
5761 | struct block *exp_valid_block; | |
5762 | struct value *val, *mark; | |
5763 | struct frame_info *frame; | |
5764 | struct frame_info *prev_frame = NULL; | |
5765 | char *exp_start = NULL; | |
5766 | char *exp_end = NULL; | |
5767 | char *tok, *end_tok; | |
5768 | int toklen; | |
5769 | char *cond_start = NULL; | |
5770 | char *cond_end = NULL; | |
5771 | struct expression *cond = NULL; | |
5772 | int i, other_type_used, target_resources_ok = 0; | |
5773 | enum bptype bp_type; | |
5774 | int mem_cnt = 0; | |
5775 | ||
fe39c653 | 5776 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5777 | |
c906108c SS |
5778 | /* Parse arguments. */ |
5779 | innermost_block = NULL; | |
5780 | exp_start = arg; | |
5781 | exp = parse_exp_1 (&arg, 0, 0); | |
5782 | exp_end = arg; | |
5783 | exp_valid_block = innermost_block; | |
5784 | mark = value_mark (); | |
5785 | val = evaluate_expression (exp); | |
5786 | release_value (val); | |
d69fe07e | 5787 | if (value_lazy (val)) |
c906108c SS |
5788 | value_fetch_lazy (val); |
5789 | ||
5790 | tok = arg; | |
5791 | while (*tok == ' ' || *tok == '\t') | |
5792 | tok++; | |
5793 | end_tok = tok; | |
5794 | ||
5795 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5796 | end_tok++; | |
5797 | ||
5798 | toklen = end_tok - tok; | |
5799 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5800 | { | |
5801 | tok = cond_start = end_tok + 1; | |
5802 | cond = parse_exp_1 (&tok, 0, 0); | |
5803 | cond_end = tok; | |
5804 | } | |
5805 | if (*tok) | |
8a3fe4f8 | 5806 | error (_("Junk at end of command.")); |
c906108c | 5807 | |
53a5351d | 5808 | if (accessflag == hw_read) |
c5aa993b | 5809 | bp_type = bp_read_watchpoint; |
53a5351d | 5810 | else if (accessflag == hw_access) |
c5aa993b JM |
5811 | bp_type = bp_access_watchpoint; |
5812 | else | |
5813 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5814 | |
5815 | mem_cnt = can_use_hardware_watchpoint (val); | |
5816 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5817 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5818 | if (mem_cnt != 0) |
5819 | { | |
5820 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5821 | target_resources_ok = |
5822 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5823 | other_type_used); | |
c5aa993b | 5824 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5825 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5826 | |
c5aa993b | 5827 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5828 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5829 | } |
c906108c SS |
5830 | |
5831 | #if defined(HPUXHPPA) | |
c5aa993b | 5832 | /* On HP-UX if you set a h/w |
c906108c SS |
5833 | watchpoint before the "run" command, the inferior dies with a e.g., |
5834 | SIGILL once you start it. I initially believed this was due to a | |
5835 | bad interaction between page protection traps and the initial | |
5836 | startup sequence by the dynamic linker. | |
5837 | ||
5838 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5839 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5840 | yet, which forced slow watches before a "run" or "attach", and it |
5841 | still fails somewhere in the startup code. | |
5842 | ||
5843 | Until I figure out what's happening, I'm disallowing watches altogether | |
5844 | before the "run" or "attach" command. We'll tell the user they must | |
5845 | set watches after getting the program started. */ | |
c5aa993b | 5846 | if (!target_has_execution) |
c906108c | 5847 | { |
8a3fe4f8 | 5848 | warning (_("can't do that without a running program; try \"break main\"), \"run\" first"); |
c906108c SS |
5849 | return; |
5850 | } | |
5851 | #endif /* HPUXHPPA */ | |
c5aa993b | 5852 | |
4d28f7a8 KB |
5853 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5854 | watchpoint could not be set. */ | |
5855 | if (!mem_cnt || target_resources_ok <= 0) | |
5856 | bp_type = bp_watchpoint; | |
5857 | ||
c906108c | 5858 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5859 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5860 | set_breakpoint_count (breakpoint_count + 1); |
5861 | b->number = breakpoint_count; | |
b5de0fa7 | 5862 | b->disposition = disp_donttouch; |
c906108c SS |
5863 | b->exp = exp; |
5864 | b->exp_valid_block = exp_valid_block; | |
5865 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5866 | b->val = val; | |
5867 | b->cond = cond; | |
5868 | if (cond_start) | |
5869 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5870 | else | |
5871 | b->cond_string = 0; | |
c5aa993b | 5872 | |
c906108c SS |
5873 | frame = block_innermost_frame (exp_valid_block); |
5874 | if (frame) | |
5875 | { | |
5876 | prev_frame = get_prev_frame (frame); | |
7a424e99 | 5877 | b->watchpoint_frame = get_frame_id (frame); |
c906108c SS |
5878 | } |
5879 | else | |
101dcfbe AC |
5880 | { |
5881 | memset (&b->watchpoint_frame, 0, sizeof (b->watchpoint_frame)); | |
5882 | } | |
c906108c | 5883 | |
c906108c SS |
5884 | /* If the expression is "local", then set up a "watchpoint scope" |
5885 | breakpoint at the point where we've left the scope of the watchpoint | |
5886 | expression. */ | |
5887 | if (innermost_block) | |
5888 | { | |
5889 | if (prev_frame) | |
5890 | { | |
5891 | struct breakpoint *scope_breakpoint; | |
e86ae29f KS |
5892 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), |
5893 | bp_watchpoint_scope); | |
c906108c | 5894 | |
b5de0fa7 | 5895 | scope_breakpoint->enable_state = bp_enabled; |
c906108c SS |
5896 | |
5897 | /* Automatically delete the breakpoint when it hits. */ | |
b5de0fa7 | 5898 | scope_breakpoint->disposition = disp_del; |
c906108c SS |
5899 | |
5900 | /* Only break in the proper frame (help with recursion). */ | |
818dd999 | 5901 | scope_breakpoint->frame_id = get_frame_id (prev_frame); |
c906108c SS |
5902 | |
5903 | /* Set the address at which we will stop. */ | |
5cab636d DJ |
5904 | scope_breakpoint->loc->requested_address |
5905 | = get_frame_pc (prev_frame); | |
5906 | scope_breakpoint->loc->address | |
88f7da05 KB |
5907 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, |
5908 | scope_breakpoint->type); | |
c906108c SS |
5909 | |
5910 | /* The scope breakpoint is related to the watchpoint. We | |
5911 | will need to act on them together. */ | |
5912 | b->related_breakpoint = scope_breakpoint; | |
5913 | } | |
5914 | } | |
5915 | value_free_to_mark (mark); | |
5916 | mention (b); | |
5917 | } | |
5918 | ||
5919 | /* Return count of locations need to be watched and can be handled | |
5920 | in hardware. If the watchpoint can not be handled | |
5921 | in hardware return zero. */ | |
5922 | ||
c906108c | 5923 | static int |
fba45db2 | 5924 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5925 | { |
5926 | int found_memory_cnt = 0; | |
2e70b7b9 | 5927 | struct value *head = v; |
c906108c SS |
5928 | |
5929 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5930 | if (!can_use_hw_watchpoints) |
c906108c | 5931 | return 0; |
c5aa993b | 5932 | |
5c44784c JM |
5933 | /* Make sure that the value of the expression depends only upon |
5934 | memory contents, and values computed from them within GDB. If we | |
5935 | find any register references or function calls, we can't use a | |
5936 | hardware watchpoint. | |
5937 | ||
5938 | The idea here is that evaluating an expression generates a series | |
5939 | of values, one holding the value of every subexpression. (The | |
5940 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5941 | a*b+c.) GDB's values hold almost enough information to establish | |
5942 | the criteria given above --- they identify memory lvalues, | |
5943 | register lvalues, computed values, etcetera. So we can evaluate | |
5944 | the expression, and then scan the chain of values that leaves | |
5945 | behind to decide whether we can detect any possible change to the | |
5946 | expression's final value using only hardware watchpoints. | |
5947 | ||
5948 | However, I don't think that the values returned by inferior | |
5949 | function calls are special in any way. So this function may not | |
5950 | notice that an expression involving an inferior function call | |
5951 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 5952 | for (; v; v = value_next (v)) |
c906108c | 5953 | { |
5c44784c | 5954 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5955 | { |
d69fe07e | 5956 | if (value_lazy (v)) |
5c44784c JM |
5957 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
5958 | we either just used its address (e.g., `a' in `a.b') or | |
5959 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5960 | ; | |
53a5351d | 5961 | else |
5c44784c JM |
5962 | { |
5963 | /* Ahh, memory we actually used! Check if we can cover | |
5964 | it with hardware watchpoints. */ | |
df407dfe | 5965 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
5966 | |
5967 | /* We only watch structs and arrays if user asked for it | |
5968 | explicitly, never if they just happen to appear in a | |
5969 | middle of some value chain. */ | |
5970 | if (v == head | |
5971 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5972 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5973 | { | |
df407dfe AC |
5974 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
5975 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
5976 | |
5977 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5978 | return 0; | |
5979 | else | |
5980 | found_memory_cnt++; | |
5981 | } | |
5c44784c | 5982 | } |
c5aa993b | 5983 | } |
5086187c AC |
5984 | else if (VALUE_LVAL (v) != not_lval |
5985 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 5986 | return 0; /* ??? What does this represent? */ |
5086187c | 5987 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 5988 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
5989 | } |
5990 | ||
5991 | /* The expression itself looks suitable for using a hardware | |
5992 | watchpoint, but give the target machine a chance to reject it. */ | |
5993 | return found_memory_cnt; | |
5994 | } | |
5995 | ||
8b93c638 | 5996 | void |
fba45db2 | 5997 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5998 | { |
5999 | watch_command (arg, from_tty); | |
6000 | } | |
8926118c | 6001 | |
c5aa993b | 6002 | static void |
fba45db2 | 6003 | watch_command (char *arg, int from_tty) |
c906108c | 6004 | { |
53a5351d | 6005 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6006 | } |
6007 | ||
8b93c638 | 6008 | void |
fba45db2 | 6009 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6010 | { |
6011 | rwatch_command (arg, from_tty); | |
6012 | } | |
8926118c | 6013 | |
c5aa993b | 6014 | static void |
fba45db2 | 6015 | rwatch_command (char *arg, int from_tty) |
c906108c | 6016 | { |
53a5351d | 6017 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6018 | } |
6019 | ||
8b93c638 | 6020 | void |
fba45db2 | 6021 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6022 | { |
6023 | awatch_command (arg, from_tty); | |
6024 | } | |
8926118c | 6025 | |
c5aa993b | 6026 | static void |
fba45db2 | 6027 | awatch_command (char *arg, int from_tty) |
c906108c | 6028 | { |
53a5351d | 6029 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6030 | } |
c906108c | 6031 | \f |
c5aa993b | 6032 | |
43ff13b4 | 6033 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6034 | because it uses the mechanisms of breakpoints. */ |
6035 | ||
43ff13b4 JM |
6036 | /* This function is called by fetch_inferior_event via the |
6037 | cmd_continuation pointer, to complete the until command. It takes | |
6038 | care of cleaning up the temporary breakpoints set up by the until | |
6039 | command. */ | |
c2c6d25f JM |
6040 | static void |
6041 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 6042 | { |
0d06e24b JM |
6043 | struct cleanup *cleanups; |
6044 | ||
57e687d9 | 6045 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 6046 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
6047 | } |
6048 | ||
c906108c | 6049 | void |
ae66c1fc | 6050 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6051 | { |
6052 | struct symtabs_and_lines sals; | |
6053 | struct symtab_and_line sal; | |
206415a3 DJ |
6054 | struct frame_info *frame = get_selected_frame (NULL); |
6055 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c SS |
6056 | struct breakpoint *breakpoint; |
6057 | struct cleanup *old_chain; | |
0d06e24b JM |
6058 | struct continuation_arg *arg1; |
6059 | ||
c906108c SS |
6060 | |
6061 | clear_proceed_status (); | |
6062 | ||
6063 | /* Set a breakpoint where the user wants it and at return from | |
6064 | this function */ | |
c5aa993b | 6065 | |
c906108c SS |
6066 | if (default_breakpoint_valid) |
6067 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6068 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6069 | else |
53a5351d | 6070 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6071 | 0, (char ***) NULL, NULL); |
c5aa993b | 6072 | |
c906108c | 6073 | if (sals.nelts != 1) |
8a3fe4f8 | 6074 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6075 | |
c906108c | 6076 | sal = sals.sals[0]; |
b8c9b27d | 6077 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6078 | |
c906108c | 6079 | if (*arg) |
8a3fe4f8 | 6080 | error (_("Junk at end of arguments.")); |
c5aa993b | 6081 | |
c906108c | 6082 | resolve_sal_pc (&sal); |
c5aa993b | 6083 | |
ae66c1fc EZ |
6084 | if (anywhere) |
6085 | /* If the user told us to continue until a specified location, | |
6086 | we don't specify a frame at which we need to stop. */ | |
6087 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6088 | else | |
6089 | /* Otherwise, specify the current frame, because we want to stop only | |
6090 | at the very same frame. */ | |
206415a3 | 6091 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6092 | bp_until); |
c5aa993b | 6093 | |
362646f5 | 6094 | if (!target_can_async_p ()) |
4d6140d9 | 6095 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6096 | else |
4d6140d9 | 6097 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
6098 | |
6099 | /* If we are running asynchronously, and the target supports async | |
6100 | execution, we are not waiting for the target to stop, in the call | |
6101 | tp proceed, below. This means that we cannot delete the | |
6102 | brekpoints until the target has actually stopped. The only place | |
6103 | where we get a chance to do that is in fetch_inferior_event, so | |
6104 | we must set things up for that. */ | |
6105 | ||
362646f5 | 6106 | if (target_can_async_p ()) |
43ff13b4 | 6107 | { |
0d06e24b JM |
6108 | /* In this case the arg for the continuation is just the point |
6109 | in the exec_cleanups chain from where to start doing | |
6110 | cleanups, because all the continuation does is the cleanups in | |
6111 | the exec_cleanup_chain. */ | |
6112 | arg1 = | |
6113 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
6114 | arg1->next = NULL; |
6115 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
6116 | |
6117 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 6118 | } |
c906108c | 6119 | |
ae66c1fc EZ |
6120 | /* Keep within the current frame, or in frames called by the current |
6121 | one. */ | |
c906108c SS |
6122 | if (prev_frame) |
6123 | { | |
30f7db39 AC |
6124 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6125 | sal.pc = get_frame_pc (prev_frame); | |
818dd999 AC |
6126 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6127 | bp_until); | |
362646f5 | 6128 | if (!target_can_async_p ()) |
4d6140d9 | 6129 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 6130 | else |
4d6140d9 | 6131 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6132 | } |
c5aa993b | 6133 | |
c906108c | 6134 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
6135 | /* Do the cleanups now, anly if we are not running asynchronously, |
6136 | of if we are, but the target is still synchronous. */ | |
362646f5 | 6137 | if (!target_can_async_p ()) |
c5aa993b | 6138 | do_cleanups (old_chain); |
c906108c | 6139 | } |
ae66c1fc | 6140 | |
c906108c | 6141 | static void |
fba45db2 | 6142 | ep_skip_leading_whitespace (char **s) |
c906108c | 6143 | { |
c5aa993b JM |
6144 | if ((s == NULL) || (*s == NULL)) |
6145 | return; | |
6146 | while (isspace (**s)) | |
6147 | *s += 1; | |
c906108c | 6148 | } |
c5aa993b | 6149 | |
c906108c SS |
6150 | /* This function examines a string, and attempts to find a token |
6151 | that might be an event name in the leading characters. If a | |
6152 | possible match is found, a pointer to the last character of | |
6153 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6154 | |
c906108c | 6155 | static char * |
fba45db2 | 6156 | ep_find_event_name_end (char *arg) |
c906108c | 6157 | { |
c5aa993b JM |
6158 | char *s = arg; |
6159 | char *event_name_end = NULL; | |
6160 | ||
c906108c SS |
6161 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6162 | if (arg == NULL) | |
6163 | return NULL; | |
c5aa993b | 6164 | |
c906108c | 6165 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6166 | Basically, we're looking for alphanumerics and underscores; |
6167 | anything else delimites the token. */ | |
c906108c SS |
6168 | while (*s != '\0') |
6169 | { | |
c5aa993b JM |
6170 | if (!isalnum (*s) && (*s != '_')) |
6171 | break; | |
c906108c SS |
6172 | event_name_end = s; |
6173 | s++; | |
6174 | } | |
c5aa993b | 6175 | |
c906108c SS |
6176 | return event_name_end; |
6177 | } | |
6178 | ||
c5aa993b | 6179 | |
c906108c SS |
6180 | /* This function attempts to parse an optional "if <cond>" clause |
6181 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6182 | |
c906108c SS |
6183 | Else, it returns a pointer to the condition string. (It does not |
6184 | attempt to evaluate the string against a particular block.) And, | |
6185 | it updates arg to point to the first character following the parsed | |
6186 | if clause in the arg string. */ | |
53a5351d | 6187 | |
c906108c | 6188 | static char * |
fba45db2 | 6189 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6190 | { |
c5aa993b JM |
6191 | char *cond_string; |
6192 | ||
6193 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6194 | return NULL; |
c5aa993b | 6195 | |
c906108c SS |
6196 | /* Skip the "if" keyword. */ |
6197 | (*arg) += 2; | |
c5aa993b | 6198 | |
c906108c SS |
6199 | /* Skip any extra leading whitespace, and record the start of the |
6200 | condition string. */ | |
6201 | ep_skip_leading_whitespace (arg); | |
6202 | cond_string = *arg; | |
c5aa993b | 6203 | |
c906108c SS |
6204 | /* Assume that the condition occupies the remainder of the arg string. */ |
6205 | (*arg) += strlen (cond_string); | |
c5aa993b | 6206 | |
c906108c SS |
6207 | return cond_string; |
6208 | } | |
c5aa993b | 6209 | |
c906108c SS |
6210 | /* This function attempts to parse an optional filename from the arg |
6211 | string. If one is not found, it returns NULL. | |
c5aa993b | 6212 | |
c906108c SS |
6213 | Else, it returns a pointer to the parsed filename. (This function |
6214 | makes no attempt to verify that a file of that name exists, or is | |
6215 | accessible.) And, it updates arg to point to the first character | |
6216 | following the parsed filename in the arg string. | |
c5aa993b | 6217 | |
c906108c SS |
6218 | Note that clients needing to preserve the returned filename for |
6219 | future access should copy it to their own buffers. */ | |
6220 | static char * | |
fba45db2 | 6221 | ep_parse_optional_filename (char **arg) |
c906108c | 6222 | { |
c5aa993b JM |
6223 | static char filename[1024]; |
6224 | char *arg_p = *arg; | |
6225 | int i; | |
6226 | char c; | |
6227 | ||
c906108c SS |
6228 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6229 | return NULL; | |
c5aa993b JM |
6230 | |
6231 | for (i = 0;; i++) | |
c906108c SS |
6232 | { |
6233 | c = *arg_p; | |
6234 | if (isspace (c)) | |
c5aa993b | 6235 | c = '\0'; |
c906108c SS |
6236 | filename[i] = c; |
6237 | if (c == '\0') | |
c5aa993b | 6238 | break; |
c906108c SS |
6239 | arg_p++; |
6240 | } | |
6241 | *arg = arg_p; | |
c5aa993b | 6242 | |
c906108c SS |
6243 | return filename; |
6244 | } | |
c5aa993b | 6245 | |
c906108c SS |
6246 | /* Commands to deal with catching events, such as signals, exceptions, |
6247 | process start/exit, etc. */ | |
c5aa993b JM |
6248 | |
6249 | typedef enum | |
6250 | { | |
6251 | catch_fork, catch_vfork | |
6252 | } | |
6253 | catch_fork_kind; | |
6254 | ||
c906108c | 6255 | static void |
fba45db2 KB |
6256 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6257 | int from_tty) | |
c906108c | 6258 | { |
c5aa993b JM |
6259 | char *cond_string = NULL; |
6260 | ||
c906108c | 6261 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6262 | |
c906108c | 6263 | /* The allowed syntax is: |
c5aa993b JM |
6264 | catch [v]fork |
6265 | catch [v]fork if <cond> | |
6266 | ||
c906108c SS |
6267 | First, check if there's an if clause. */ |
6268 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6269 | |
c906108c | 6270 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6271 | error (_("Junk at end of arguments.")); |
c5aa993b | 6272 | |
c906108c SS |
6273 | /* If this target supports it, create a fork or vfork catchpoint |
6274 | and enable reporting of such events. */ | |
c5aa993b JM |
6275 | switch (fork_kind) |
6276 | { | |
6277 | case catch_fork: | |
c906108c SS |
6278 | create_fork_event_catchpoint (tempflag, cond_string); |
6279 | break; | |
c5aa993b | 6280 | case catch_vfork: |
c906108c SS |
6281 | create_vfork_event_catchpoint (tempflag, cond_string); |
6282 | break; | |
c5aa993b | 6283 | default: |
8a3fe4f8 | 6284 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6285 | break; |
c5aa993b | 6286 | } |
c906108c SS |
6287 | } |
6288 | ||
6289 | static void | |
fba45db2 | 6290 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6291 | { |
c5aa993b | 6292 | char *cond_string = NULL; |
c906108c SS |
6293 | |
6294 | ep_skip_leading_whitespace (&arg); | |
6295 | ||
6296 | /* The allowed syntax is: | |
c5aa993b JM |
6297 | catch exec |
6298 | catch exec if <cond> | |
c906108c SS |
6299 | |
6300 | First, check if there's an if clause. */ | |
6301 | cond_string = ep_parse_optional_if_clause (&arg); | |
6302 | ||
6303 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6304 | error (_("Junk at end of arguments.")); |
c906108c SS |
6305 | |
6306 | /* If this target supports it, create an exec catchpoint | |
6307 | and enable reporting of such events. */ | |
6308 | create_exec_event_catchpoint (tempflag, cond_string); | |
6309 | } | |
c5aa993b | 6310 | |
c906108c | 6311 | static void |
fba45db2 | 6312 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6313 | { |
c5aa993b JM |
6314 | char *dll_pathname = NULL; |
6315 | char *cond_string = NULL; | |
6316 | ||
c906108c | 6317 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6318 | |
c906108c | 6319 | /* The allowed syntax is: |
c5aa993b JM |
6320 | catch load |
6321 | catch load if <cond> | |
6322 | catch load <filename> | |
6323 | catch load <filename> if <cond> | |
6324 | ||
c906108c SS |
6325 | The user is not allowed to specify the <filename> after an |
6326 | if clause. | |
c5aa993b | 6327 | |
c906108c | 6328 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6329 | |
c906108c SS |
6330 | First, check if there's an if clause. If so, then there |
6331 | cannot be a filename. */ | |
6332 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6333 | |
c906108c SS |
6334 | /* If there was an if clause, then there cannot be a filename. |
6335 | Else, there might be a filename and an if clause. */ | |
6336 | if (cond_string == NULL) | |
6337 | { | |
6338 | dll_pathname = ep_parse_optional_filename (&arg); | |
6339 | ep_skip_leading_whitespace (&arg); | |
6340 | cond_string = ep_parse_optional_if_clause (&arg); | |
6341 | } | |
c5aa993b | 6342 | |
c906108c | 6343 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6344 | error (_("Junk at end of arguments.")); |
c5aa993b | 6345 | |
c906108c SS |
6346 | /* Create a load breakpoint that only triggers when a load of |
6347 | the specified dll (or any dll, if no pathname was specified) | |
6348 | occurs. */ | |
39f77062 | 6349 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6350 | dll_pathname, cond_string); |
c906108c | 6351 | } |
c5aa993b | 6352 | |
c906108c | 6353 | static void |
fba45db2 | 6354 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6355 | { |
c5aa993b JM |
6356 | char *dll_pathname = NULL; |
6357 | char *cond_string = NULL; | |
6358 | ||
c906108c | 6359 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6360 | |
c906108c | 6361 | /* The allowed syntax is: |
c5aa993b JM |
6362 | catch unload |
6363 | catch unload if <cond> | |
6364 | catch unload <filename> | |
6365 | catch unload <filename> if <cond> | |
6366 | ||
c906108c SS |
6367 | The user is not allowed to specify the <filename> after an |
6368 | if clause. | |
c5aa993b | 6369 | |
c906108c | 6370 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6371 | |
c906108c SS |
6372 | First, check if there's an if clause. If so, then there |
6373 | cannot be a filename. */ | |
6374 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6375 | |
c906108c SS |
6376 | /* If there was an if clause, then there cannot be a filename. |
6377 | Else, there might be a filename and an if clause. */ | |
6378 | if (cond_string == NULL) | |
6379 | { | |
6380 | dll_pathname = ep_parse_optional_filename (&arg); | |
6381 | ep_skip_leading_whitespace (&arg); | |
6382 | cond_string = ep_parse_optional_if_clause (&arg); | |
6383 | } | |
c5aa993b | 6384 | |
c906108c | 6385 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6386 | error (_("Junk at end of arguments.")); |
c5aa993b | 6387 | |
c906108c SS |
6388 | /* Create an unload breakpoint that only triggers when an unload of |
6389 | the specified dll (or any dll, if no pathname was specified) | |
6390 | occurs. */ | |
39f77062 | 6391 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6392 | dll_pathname, cond_string); |
c906108c | 6393 | } |
c906108c SS |
6394 | |
6395 | /* Commands to deal with catching exceptions. */ | |
6396 | ||
6397 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6398 | exception event callback */ |
c906108c SS |
6399 | |
6400 | static void | |
fba45db2 KB |
6401 | create_exception_catchpoint (int tempflag, char *cond_string, |
6402 | enum exception_event_kind ex_event, | |
6403 | struct symtab_and_line *sal) | |
c906108c | 6404 | { |
c5aa993b | 6405 | struct breakpoint *b; |
c5aa993b | 6406 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6407 | enum bptype bptype; |
c906108c | 6408 | |
c5aa993b | 6409 | if (!sal) /* no exception support? */ |
c906108c SS |
6410 | return; |
6411 | ||
c906108c SS |
6412 | switch (ex_event) |
6413 | { | |
c5aa993b | 6414 | case EX_EVENT_THROW: |
4d28f7a8 | 6415 | bptype = bp_catch_throw; |
c5aa993b JM |
6416 | break; |
6417 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6418 | bptype = bp_catch_catch; |
c5aa993b JM |
6419 | break; |
6420 | default: /* error condition */ | |
8a3fe4f8 | 6421 | error (_("Internal error -- invalid catchpoint kind")); |
c906108c | 6422 | } |
4d28f7a8 KB |
6423 | |
6424 | b = set_raw_breakpoint (*sal, bptype); | |
6425 | set_breakpoint_count (breakpoint_count + 1); | |
6426 | b->number = breakpoint_count; | |
6427 | b->cond = NULL; | |
6428 | b->cond_string = (cond_string == NULL) ? | |
6429 | NULL : savestring (cond_string, strlen (cond_string)); | |
6430 | b->thread = thread; | |
6431 | b->addr_string = NULL; | |
b5de0fa7 EZ |
6432 | b->enable_state = bp_enabled; |
6433 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c SS |
6434 | mention (b); |
6435 | } | |
6436 | ||
3086aeae DJ |
6437 | static enum print_stop_action |
6438 | print_exception_catchpoint (struct breakpoint *b) | |
6439 | { | |
6440 | annotate_catchpoint (b->number); | |
6441 | ||
6442 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6443 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6444 | b->number); |
6445 | else | |
a3f17187 | 6446 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6447 | b->number); |
6448 | ||
6449 | return PRINT_SRC_AND_LOC; | |
6450 | } | |
6451 | ||
6452 | static void | |
6453 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6454 | { | |
6455 | if (addressprint) | |
6456 | { | |
6457 | annotate_field (4); | |
5cab636d | 6458 | ui_out_field_core_addr (uiout, "addr", b->loc->address); |
3086aeae DJ |
6459 | } |
6460 | annotate_field (5); | |
5cab636d | 6461 | *last_addr = b->loc->address; |
3086aeae DJ |
6462 | if (strstr (b->addr_string, "throw") != NULL) |
6463 | ui_out_field_string (uiout, "what", "exception throw"); | |
6464 | else | |
6465 | ui_out_field_string (uiout, "what", "exception catch"); | |
6466 | } | |
6467 | ||
6468 | static void | |
6469 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6470 | { | |
6471 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6472 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6473 | else |
a3f17187 | 6474 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6475 | } |
6476 | ||
6477 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6478 | print_exception_catchpoint, | |
6479 | print_one_exception_catchpoint, | |
6480 | print_mention_exception_catchpoint | |
6481 | }; | |
6482 | ||
6483 | static int | |
6484 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6485 | enum exception_event_kind ex_event, int from_tty) | |
6486 | { | |
6487 | char *trigger_func_name, *nameptr; | |
6488 | struct symtabs_and_lines sals; | |
6489 | struct breakpoint *b; | |
6490 | ||
6491 | if (ex_event == EX_EVENT_CATCH) | |
6492 | trigger_func_name = xstrdup ("__cxa_begin_catch"); | |
6493 | else | |
6494 | trigger_func_name = xstrdup ("__cxa_throw"); | |
6495 | ||
6496 | nameptr = trigger_func_name; | |
68219205 | 6497 | sals = decode_line_1 (&nameptr, 1, NULL, 0, NULL, NULL); |
3086aeae DJ |
6498 | if (sals.nelts == 0) |
6499 | { | |
b59661bd | 6500 | xfree (trigger_func_name); |
3086aeae DJ |
6501 | return 0; |
6502 | } | |
6503 | ||
6504 | b = set_raw_breakpoint (sals.sals[0], bp_breakpoint); | |
6505 | set_breakpoint_count (breakpoint_count + 1); | |
6506 | b->number = breakpoint_count; | |
6507 | b->cond = NULL; | |
6508 | b->cond_string = (cond_string == NULL) ? | |
6509 | NULL : savestring (cond_string, strlen (cond_string)); | |
6510 | b->thread = -1; | |
6511 | b->addr_string = trigger_func_name; | |
6512 | b->enable_state = bp_enabled; | |
6513 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6514 | b->ops = &gnu_v3_exception_catchpoint_ops; | |
6515 | ||
b59661bd | 6516 | xfree (sals.sals); |
3086aeae DJ |
6517 | mention (b); |
6518 | return 1; | |
6519 | } | |
6520 | ||
c5aa993b | 6521 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6522 | |
6523 | static void | |
fba45db2 KB |
6524 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6525 | int tempflag, int from_tty) | |
c906108c | 6526 | { |
c5aa993b JM |
6527 | char *cond_string = NULL; |
6528 | struct symtab_and_line *sal = NULL; | |
6529 | ||
c906108c | 6530 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6531 | |
c906108c SS |
6532 | cond_string = ep_parse_optional_if_clause (&arg); |
6533 | ||
6534 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6535 | error (_("Junk at end of arguments.")); |
c906108c SS |
6536 | |
6537 | if ((ex_event != EX_EVENT_THROW) && | |
6538 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6539 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6540 | |
3086aeae DJ |
6541 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6542 | return; | |
6543 | ||
c906108c SS |
6544 | /* See if we can find a callback routine */ |
6545 | sal = target_enable_exception_callback (ex_event, 1); | |
6546 | ||
c5aa993b | 6547 | if (sal) |
c906108c SS |
6548 | { |
6549 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6550 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6551 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6552 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6553 | else |
53a5351d | 6554 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6555 | } |
c5aa993b | 6556 | |
8a3fe4f8 | 6557 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6558 | } |
6559 | ||
f7f9143b JB |
6560 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6561 | ||
6562 | static void | |
6563 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6564 | char *addr_string, | |
6565 | char *exp_string, | |
6566 | char *cond_string, | |
6567 | struct expression *cond, | |
6568 | struct breakpoint_ops *ops, | |
6569 | int tempflag, | |
6570 | int from_tty) | |
6571 | { | |
6572 | struct breakpoint *b; | |
6573 | ||
6574 | if (from_tty) | |
6575 | { | |
6576 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6577 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6578 | version for exception catchpoints, because two catchpoints | |
6579 | used for different exception names will use the same address. | |
6580 | In this case, a "breakpoint ... also set at..." warning is | |
6581 | unproductive. Besides. the warning phrasing is also a bit | |
6582 | inapropriate, we should use the word catchpoint, and tell | |
6583 | the user what type of catchpoint it is. The above is good | |
6584 | enough for now, though. */ | |
6585 | } | |
6586 | ||
6587 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6588 | set_breakpoint_count (breakpoint_count + 1); | |
6589 | ||
6590 | b->enable_state = bp_enabled; | |
6591 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6592 | b->number = breakpoint_count; | |
6593 | b->ignore_count = 0; | |
6594 | b->cond = cond; | |
6595 | b->addr_string = addr_string; | |
6596 | b->language = language_ada; | |
6597 | b->cond_string = cond_string; | |
6598 | b->exp_string = exp_string; | |
6599 | b->thread = -1; | |
6600 | b->ops = ops; | |
6601 | b->from_tty = from_tty; | |
6602 | ||
6603 | mention (b); | |
6604 | } | |
6605 | ||
6606 | /* Implement the "catch exception" command. */ | |
6607 | ||
6608 | static void | |
6609 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6610 | { | |
6611 | struct symtab_and_line sal; | |
6612 | enum bptype type; | |
6613 | char *addr_string = NULL; | |
6614 | char *exp_string = NULL; | |
6615 | char *cond_string = NULL; | |
6616 | struct expression *cond = NULL; | |
6617 | struct breakpoint_ops *ops = NULL; | |
6618 | ||
6619 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6620 | &cond_string, &cond, &ops); | |
6621 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6622 | cond_string, cond, ops, tempflag, | |
6623 | from_tty); | |
6624 | } | |
6625 | ||
6626 | /* Implement the "catch assert" command. */ | |
6627 | ||
6628 | static void | |
6629 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6630 | { | |
6631 | struct symtab_and_line sal; | |
6632 | char *addr_string = NULL; | |
6633 | struct breakpoint_ops *ops = NULL; | |
6634 | ||
6635 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6636 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6637 | tempflag, from_tty); | |
6638 | } | |
6639 | ||
c906108c SS |
6640 | /* Cover routine to allow wrapping target_enable_exception_catchpoints |
6641 | inside a catch_errors */ | |
6642 | ||
6643 | static int | |
4efb68b1 | 6644 | cover_target_enable_exception_callback (void *arg) |
c906108c SS |
6645 | { |
6646 | args_for_catchpoint_enable *args = arg; | |
6647 | struct symtab_and_line *sal; | |
b5de0fa7 | 6648 | sal = target_enable_exception_callback (args->kind, args->enable_p); |
c906108c SS |
6649 | if (sal == NULL) |
6650 | return 0; | |
6651 | else if (sal == (struct symtab_and_line *) -1) | |
6652 | return -1; | |
6653 | else | |
c5aa993b | 6654 | return 1; /*is valid */ |
c906108c SS |
6655 | } |
6656 | ||
c906108c | 6657 | static void |
fba45db2 | 6658 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6659 | { |
c5aa993b | 6660 | |
c906108c SS |
6661 | /* The first argument may be an event name, such as "start" or "load". |
6662 | If so, then handle it as such. If it doesn't match an event name, | |
6663 | then attempt to interpret it as an exception name. (This latter is | |
6664 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6665 | |
c906108c | 6666 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6667 | char *arg1_start = arg; |
6668 | char *arg1_end; | |
6669 | int arg1_length; | |
6670 | ||
c906108c SS |
6671 | if (arg1_start == NULL) |
6672 | { | |
c5aa993b | 6673 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6674 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6675 | /* return; */ | |
c5aa993b | 6676 | /* Now, this is not allowed */ |
8a3fe4f8 | 6677 | error (_("Catch requires an event name.")); |
c906108c SS |
6678 | |
6679 | } | |
6680 | arg1_end = ep_find_event_name_end (arg1_start); | |
6681 | if (arg1_end == NULL) | |
8a3fe4f8 | 6682 | error (_("catch requires an event")); |
c906108c | 6683 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6684 | |
c906108c SS |
6685 | /* Try to match what we found against known event names. */ |
6686 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6687 | { | |
8a3fe4f8 | 6688 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6689 | } |
6690 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6691 | { | |
53a5351d JM |
6692 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6693 | tempflag, from_tty); | |
c906108c SS |
6694 | } |
6695 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6696 | { | |
53a5351d JM |
6697 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6698 | tempflag, from_tty); | |
c906108c SS |
6699 | } |
6700 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6701 | { | |
8a3fe4f8 | 6702 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6703 | } |
6704 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6705 | { | |
8a3fe4f8 | 6706 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6707 | } |
6708 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6709 | { | |
8a3fe4f8 | 6710 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6711 | } |
6712 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6713 | { | |
8a3fe4f8 | 6714 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6715 | } |
6716 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6717 | { | |
8a3fe4f8 | 6718 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6719 | } |
6720 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6721 | { | |
c5aa993b | 6722 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6723 | } |
6724 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6725 | { | |
c5aa993b | 6726 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6727 | } |
6728 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6729 | { | |
c5aa993b | 6730 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6731 | } |
6732 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6733 | { | |
c5aa993b | 6734 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6735 | } |
6736 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6737 | { | |
c5aa993b | 6738 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6739 | } |
6740 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6741 | { | |
8a3fe4f8 | 6742 | error (_("Catch of stop not yet implemented")); |
c906108c | 6743 | } |
f7f9143b JB |
6744 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6745 | { | |
6746 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6747 | } | |
6748 | ||
6749 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6750 | { | |
6751 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6752 | } | |
c5aa993b | 6753 | |
c906108c SS |
6754 | /* This doesn't appear to be an event name */ |
6755 | ||
6756 | else | |
6757 | { | |
6758 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6759 | as the name of an exception */ |
c906108c | 6760 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6761 | /* Now this is not allowed */ |
8a3fe4f8 | 6762 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6763 | |
6764 | } | |
6765 | } | |
6766 | ||
6767 | /* Used by the gui, could be made a worker for other things. */ | |
6768 | ||
6769 | struct breakpoint * | |
fba45db2 | 6770 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6771 | { |
6772 | struct breakpoint *b; | |
4d28f7a8 | 6773 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6774 | set_breakpoint_count (breakpoint_count + 1); |
6775 | b->number = breakpoint_count; | |
c906108c SS |
6776 | b->cond = 0; |
6777 | b->thread = -1; | |
6778 | return b; | |
6779 | } | |
6780 | ||
c906108c | 6781 | static void |
fba45db2 | 6782 | catch_command (char *arg, int from_tty) |
c906108c SS |
6783 | { |
6784 | catch_command_1 (arg, 0, from_tty); | |
6785 | } | |
6786 | \f | |
6787 | ||
6788 | static void | |
fba45db2 | 6789 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6790 | { |
6791 | catch_command_1 (arg, 1, from_tty); | |
6792 | } | |
6793 | ||
80f8a6eb | 6794 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6795 | |
6796 | static void | |
fba45db2 | 6797 | clear_command (char *arg, int from_tty) |
c906108c | 6798 | { |
80f8a6eb | 6799 | struct breakpoint *b, *tmp, *prev, *found; |
c906108c SS |
6800 | int default_match; |
6801 | struct symtabs_and_lines sals; | |
6802 | struct symtab_and_line sal; | |
c906108c SS |
6803 | int i; |
6804 | ||
6805 | if (arg) | |
6806 | { | |
6807 | sals = decode_line_spec (arg, 1); | |
6808 | default_match = 0; | |
6809 | } | |
6810 | else | |
6811 | { | |
c5aa993b | 6812 | sals.sals = (struct symtab_and_line *) |
c906108c | 6813 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6814 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6815 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6816 | sal.line = default_breakpoint_line; |
6817 | sal.symtab = default_breakpoint_symtab; | |
6818 | sal.pc = default_breakpoint_address; | |
6819 | if (sal.symtab == 0) | |
8a3fe4f8 | 6820 | error (_("No source file specified.")); |
c906108c SS |
6821 | |
6822 | sals.sals[0] = sal; | |
6823 | sals.nelts = 1; | |
6824 | ||
6825 | default_match = 1; | |
6826 | } | |
6827 | ||
6828 | /* For each line spec given, delete bps which correspond | |
80f8a6eb MS |
6829 | to it. Do it in two passes, solely to preserve the current |
6830 | behavior that from_tty is forced true if we delete more than | |
6831 | one breakpoint. */ | |
c906108c | 6832 | |
80f8a6eb | 6833 | found = NULL; |
c906108c SS |
6834 | for (i = 0; i < sals.nelts; i++) |
6835 | { | |
6836 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6837 | If line given (pc == 0), clear all bpts on specified line. |
6838 | If defaulting, clear all bpts on default line | |
c906108c | 6839 | or at default pc. |
c5aa993b JM |
6840 | |
6841 | defaulting sal.pc != 0 tests to do | |
6842 | ||
6843 | 0 1 pc | |
6844 | 1 1 pc _and_ line | |
6845 | 0 0 line | |
6846 | 1 0 <can't happen> */ | |
c906108c SS |
6847 | |
6848 | sal = sals.sals[i]; | |
80f8a6eb | 6849 | prev = NULL; |
c906108c | 6850 | |
80f8a6eb MS |
6851 | /* Find all matching breakpoints, remove them from the |
6852 | breakpoint chain, and add them to the 'found' chain. */ | |
6853 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
c5aa993b | 6854 | { |
80f8a6eb MS |
6855 | /* Are we going to delete b? */ |
6856 | if (b->type != bp_none | |
6857 | && b->type != bp_watchpoint | |
6858 | && b->type != bp_hardware_watchpoint | |
6859 | && b->type != bp_read_watchpoint | |
6860 | && b->type != bp_access_watchpoint | |
6861 | /* Not if b is a watchpoint of any sort... */ | |
5cab636d | 6862 | && (((sal.pc && (b->loc->address == sal.pc)) |
cf3a9e5b DJ |
6863 | && (!section_is_overlay (b->loc->section) |
6864 | || b->loc->section == sal.section)) | |
80f8a6eb MS |
6865 | /* Yes, if sal.pc matches b (modulo overlays). */ |
6866 | || ((default_match || (0 == sal.pc)) | |
6867 | && b->source_file != NULL | |
6868 | && sal.symtab != NULL | |
6314a349 | 6869 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
80f8a6eb MS |
6870 | && b->line_number == sal.line))) |
6871 | /* Yes, if sal source file and line matches b. */ | |
6872 | { | |
6873 | /* Remove it from breakpoint_chain... */ | |
6874 | if (b == breakpoint_chain) | |
6875 | { | |
6876 | /* b is at the head of the list */ | |
6877 | breakpoint_chain = b->next; | |
6878 | } | |
6879 | else | |
6880 | { | |
6881 | prev->next = b->next; | |
6882 | } | |
6883 | /* And add it to 'found' chain. */ | |
6884 | b->next = found; | |
6885 | found = b; | |
6886 | } | |
c906108c | 6887 | else |
80f8a6eb MS |
6888 | { |
6889 | /* Keep b, and keep a pointer to it. */ | |
6890 | prev = b; | |
6891 | } | |
c906108c | 6892 | } |
80f8a6eb MS |
6893 | } |
6894 | /* Now go thru the 'found' chain and delete them. */ | |
6895 | if (found == 0) | |
6896 | { | |
6897 | if (arg) | |
8a3fe4f8 | 6898 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6899 | else |
8a3fe4f8 | 6900 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6901 | } |
c906108c | 6902 | |
80f8a6eb MS |
6903 | if (found->next) |
6904 | from_tty = 1; /* Always report if deleted more than one */ | |
6905 | if (from_tty) | |
a3f17187 AC |
6906 | { |
6907 | if (!found->next) | |
6908 | printf_unfiltered (_("Deleted breakpoint ")); | |
6909 | else | |
6910 | printf_unfiltered (_("Deleted breakpoints ")); | |
6911 | } | |
80f8a6eb MS |
6912 | breakpoints_changed (); |
6913 | while (found) | |
6914 | { | |
c5aa993b | 6915 | if (from_tty) |
80f8a6eb MS |
6916 | printf_unfiltered ("%d ", found->number); |
6917 | tmp = found->next; | |
6918 | delete_breakpoint (found); | |
6919 | found = tmp; | |
c906108c | 6920 | } |
80f8a6eb MS |
6921 | if (from_tty) |
6922 | putchar_unfiltered ('\n'); | |
c906108c SS |
6923 | } |
6924 | \f | |
6925 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6926 | all breakpoints that are marked for deletion, whether hit or not. | |
6927 | This is called after any breakpoint is hit, or after errors. */ | |
6928 | ||
6929 | void | |
fba45db2 | 6930 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6931 | { |
6932 | struct breakpoint *b, *temp; | |
6933 | ||
6934 | for (; bs; bs = bs->next) | |
b5de0fa7 | 6935 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == disp_del |
c906108c SS |
6936 | && bs->stop) |
6937 | delete_breakpoint (bs->breakpoint_at); | |
6938 | ||
6939 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6940 | { |
b5de0fa7 | 6941 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6942 | delete_breakpoint (b); |
6943 | } | |
c906108c SS |
6944 | } |
6945 | ||
53a5351d JM |
6946 | /* Delete a breakpoint and clean up all traces of it in the data |
6947 | structures. */ | |
c906108c SS |
6948 | |
6949 | void | |
fba45db2 | 6950 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 6951 | { |
52f0bd74 AC |
6952 | struct breakpoint *b; |
6953 | bpstat bs; | |
7cc221ef | 6954 | struct bp_location *loc; |
c906108c | 6955 | |
8a3fe4f8 | 6956 | gdb_assert (bpt != NULL); |
c906108c SS |
6957 | |
6958 | /* Has this bp already been deleted? This can happen because multiple | |
6959 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6960 | ||
6961 | One example of this happening is a watchpoint's scope bp. When the | |
6962 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6963 | delete it. We also delete its scope bp. But the scope bp is marked | |
6964 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6965 | checked for auto-deleting bp's, which are deleted. | |
6966 | ||
6967 | A real solution to this problem might involve reference counts in bp's, | |
6968 | and/or giving them pointers back to their referencing bpstat's, and | |
6969 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 6970 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
6971 | if (bpt->type == bp_none) |
6972 | return; | |
6973 | ||
9a4105ab AC |
6974 | if (deprecated_delete_breakpoint_hook) |
6975 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 6976 | breakpoint_delete_event (bpt->number); |
c906108c | 6977 | |
5cab636d | 6978 | if (bpt->loc->inserted) |
0bde7532 | 6979 | remove_breakpoint (bpt->loc, mark_inserted); |
c5aa993b | 6980 | |
7270d8f2 OF |
6981 | free_valchain (bpt->loc); |
6982 | ||
c906108c SS |
6983 | if (breakpoint_chain == bpt) |
6984 | breakpoint_chain = bpt->next; | |
6985 | ||
7cc221ef DJ |
6986 | if (bp_location_chain == bpt->loc) |
6987 | bp_location_chain = bpt->loc->next; | |
6988 | ||
c906108c SS |
6989 | /* If we have callback-style exception catchpoints, don't go through |
6990 | the adjustments to the C++ runtime library etc. if the inferior | |
6991 | isn't actually running. target_enable_exception_callback for a | |
6992 | null target ops vector gives an undesirable error message, so we | |
6993 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
1272ad14 | 6994 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6995 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6996 | { | |
53a5351d | 6997 | /* Format possible error msg */ |
9ebf4acf AC |
6998 | char *message = xstrprintf ("Error in deleting catchpoint %d:\n", |
6999 | bpt->number); | |
7000 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
7001 | args_for_catchpoint_enable args; | |
53a5351d JM |
7002 | args.kind = bpt->type == bp_catch_catch ? |
7003 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
b5de0fa7 | 7004 | args.enable_p = 0; |
c906108c SS |
7005 | catch_errors (cover_target_enable_exception_callback, &args, |
7006 | message, RETURN_MASK_ALL); | |
9ebf4acf | 7007 | do_cleanups (cleanups); |
c906108c SS |
7008 | } |
7009 | ||
7010 | ||
7011 | ALL_BREAKPOINTS (b) | |
7012 | if (b->next == bpt) | |
c5aa993b JM |
7013 | { |
7014 | b->next = bpt->next; | |
7015 | break; | |
7016 | } | |
c906108c | 7017 | |
7cc221ef DJ |
7018 | ALL_BP_LOCATIONS (loc) |
7019 | if (loc->next == bpt->loc) | |
7020 | { | |
7021 | loc->next = bpt->loc->next; | |
7022 | break; | |
7023 | } | |
7024 | ||
9f60f21b | 7025 | check_duplicates (bpt); |
c906108c SS |
7026 | /* If this breakpoint was inserted, and there is another breakpoint |
7027 | at the same address, we need to insert the other breakpoint. */ | |
5cab636d | 7028 | if (bpt->loc->inserted |
c906108c SS |
7029 | && bpt->type != bp_hardware_watchpoint |
7030 | && bpt->type != bp_read_watchpoint | |
7031 | && bpt->type != bp_access_watchpoint | |
7032 | && bpt->type != bp_catch_fork | |
7033 | && bpt->type != bp_catch_vfork | |
7034 | && bpt->type != bp_catch_exec) | |
7035 | { | |
7036 | ALL_BREAKPOINTS (b) | |
5cab636d | 7037 | if (b->loc->address == bpt->loc->address |
cf3a9e5b | 7038 | && b->loc->section == bpt->loc->section |
5cab636d | 7039 | && !b->loc->duplicate |
b5de0fa7 EZ |
7040 | && b->enable_state != bp_disabled |
7041 | && b->enable_state != bp_shlib_disabled | |
0101ce28 | 7042 | && !b->pending |
b5de0fa7 | 7043 | && b->enable_state != bp_call_disabled) |
c5aa993b JM |
7044 | { |
7045 | int val; | |
53a5351d | 7046 | |
c2c6d25f JM |
7047 | /* We should never reach this point if there is a permanent |
7048 | breakpoint at the same address as the one being deleted. | |
7049 | If there is a permanent breakpoint somewhere, it should | |
7050 | always be the only one inserted. */ | |
b5de0fa7 | 7051 | if (b->enable_state == bp_permanent) |
8e65ff28 | 7052 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
7053 | _("another breakpoint was inserted on top of " |
7054 | "a permanent breakpoint")); | |
c2c6d25f | 7055 | |
8181d85f DJ |
7056 | memset (&b->loc->target_info, 0, sizeof (b->loc->target_info)); |
7057 | b->loc->target_info.placed_address = b->loc->address; | |
53a5351d | 7058 | if (b->type == bp_hardware_breakpoint) |
8181d85f | 7059 | val = target_insert_hw_breakpoint (&b->loc->target_info); |
53a5351d | 7060 | else |
8181d85f | 7061 | val = target_insert_breakpoint (&b->loc->target_info); |
53a5351d | 7062 | |
81d0cc19 | 7063 | /* If there was an error in the insert, print a message, then stop execution. */ |
c5aa993b JM |
7064 | if (val != 0) |
7065 | { | |
81d0cc19 GS |
7066 | struct ui_file *tmp_error_stream = mem_fileopen (); |
7067 | make_cleanup_ui_file_delete (tmp_error_stream); | |
7068 | ||
7069 | ||
7070 | if (b->type == bp_hardware_breakpoint) | |
7071 | { | |
7072 | fprintf_unfiltered (tmp_error_stream, | |
7073 | "Cannot insert hardware breakpoint %d.\n" | |
7074 | "You may have requested too many hardware breakpoints.\n", | |
7075 | b->number); | |
7076 | } | |
7077 | else | |
7078 | { | |
7079 | fprintf_unfiltered (tmp_error_stream, "Cannot insert breakpoint %d.\n", b->number); | |
7080 | fprintf_filtered (tmp_error_stream, "Error accessing memory address "); | |
66bf4b3a | 7081 | deprecated_print_address_numeric (b->loc->address, 1, tmp_error_stream); |
81d0cc19 GS |
7082 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
7083 | safe_strerror (val)); | |
7084 | } | |
7085 | ||
7086 | fprintf_unfiltered (tmp_error_stream,"The same program may be running in another process."); | |
c5aa993b | 7087 | target_terminal_ours_for_output (); |
81d0cc19 | 7088 | error_stream(tmp_error_stream); |
c5aa993b JM |
7089 | } |
7090 | else | |
5cab636d | 7091 | b->loc->inserted = 1; |
c5aa993b | 7092 | } |
c906108c SS |
7093 | } |
7094 | ||
7095 | free_command_lines (&bpt->commands); | |
7096 | if (bpt->cond) | |
b8c9b27d | 7097 | xfree (bpt->cond); |
c906108c | 7098 | if (bpt->cond_string != NULL) |
b8c9b27d | 7099 | xfree (bpt->cond_string); |
c906108c | 7100 | if (bpt->addr_string != NULL) |
b8c9b27d | 7101 | xfree (bpt->addr_string); |
c906108c | 7102 | if (bpt->exp != NULL) |
b8c9b27d | 7103 | xfree (bpt->exp); |
c906108c | 7104 | if (bpt->exp_string != NULL) |
b8c9b27d | 7105 | xfree (bpt->exp_string); |
c906108c SS |
7106 | if (bpt->val != NULL) |
7107 | value_free (bpt->val); | |
7108 | if (bpt->source_file != NULL) | |
b8c9b27d | 7109 | xfree (bpt->source_file); |
c906108c | 7110 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7111 | xfree (bpt->dll_pathname); |
c906108c | 7112 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7113 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7114 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7115 | xfree (bpt->exec_pathname); |
c906108c SS |
7116 | |
7117 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7118 | /* FIXME, how can we find all bpstat's? | |
7119 | We just check stop_bpstat for now. */ | |
7120 | for (bs = stop_bpstat; bs; bs = bs->next) | |
7121 | if (bs->breakpoint_at == bpt) | |
7122 | { | |
7123 | bs->breakpoint_at = NULL; | |
c906108c | 7124 | bs->old_val = NULL; |
c2b8ed2c | 7125 | /* bs->commands will be freed later. */ |
c906108c SS |
7126 | } |
7127 | /* On the chance that someone will soon try again to delete this same | |
7128 | bp, we mark it as deleted before freeing its storage. */ | |
7129 | bpt->type = bp_none; | |
7130 | ||
5cab636d | 7131 | xfree (bpt->loc); |
b8c9b27d | 7132 | xfree (bpt); |
c906108c SS |
7133 | } |
7134 | ||
4d6140d9 AC |
7135 | static void |
7136 | do_delete_breakpoint_cleanup (void *b) | |
7137 | { | |
7138 | delete_breakpoint (b); | |
7139 | } | |
7140 | ||
7141 | struct cleanup * | |
7142 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7143 | { | |
7144 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7145 | } | |
7146 | ||
7147 | struct cleanup * | |
7148 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
7149 | { | |
7150 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
7151 | } | |
7152 | ||
c906108c | 7153 | void |
fba45db2 | 7154 | delete_command (char *arg, int from_tty) |
c906108c SS |
7155 | { |
7156 | struct breakpoint *b, *temp; | |
7157 | ||
ea9365bb TT |
7158 | dont_repeat (); |
7159 | ||
c906108c SS |
7160 | if (arg == 0) |
7161 | { | |
7162 | int breaks_to_delete = 0; | |
7163 | ||
7164 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7165 | Do not delete internal or call-dummy breakpoints, these |
7166 | have to be deleted with an explicit breakpoint number argument. */ | |
7167 | ALL_BREAKPOINTS (b) | |
7168 | { | |
7169 | if (b->type != bp_call_dummy && | |
7170 | b->type != bp_shlib_event && | |
c4093a6a | 7171 | b->type != bp_thread_event && |
1900040c | 7172 | b->type != bp_overlay_event && |
c5aa993b | 7173 | b->number >= 0) |
973d738b DJ |
7174 | { |
7175 | breaks_to_delete = 1; | |
7176 | break; | |
7177 | } | |
c5aa993b | 7178 | } |
c906108c SS |
7179 | |
7180 | /* Ask user only if there are some breakpoints to delete. */ | |
7181 | if (!from_tty | |
e2e0b3e5 | 7182 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7183 | { |
c5aa993b JM |
7184 | ALL_BREAKPOINTS_SAFE (b, temp) |
7185 | { | |
7186 | if (b->type != bp_call_dummy && | |
7187 | b->type != bp_shlib_event && | |
c4093a6a | 7188 | b->type != bp_thread_event && |
1900040c | 7189 | b->type != bp_overlay_event && |
c5aa993b JM |
7190 | b->number >= 0) |
7191 | delete_breakpoint (b); | |
7192 | } | |
c906108c SS |
7193 | } |
7194 | } | |
7195 | else | |
7196 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7197 | } | |
7198 | ||
7199 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
7200 | The value we return ends up being the return value from catch_errors. | |
7201 | Unused in this case. */ | |
7202 | ||
7203 | static int | |
4efb68b1 | 7204 | breakpoint_re_set_one (void *bint) |
c906108c | 7205 | { |
53a5351d JM |
7206 | /* get past catch_errs */ |
7207 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7208 | struct value *mark; |
7209 | int i; | |
84acb35a JJ |
7210 | int not_found; |
7211 | int *not_found_ptr = NULL; | |
c906108c SS |
7212 | struct symtabs_and_lines sals; |
7213 | char *s; | |
b5de0fa7 | 7214 | enum enable_state save_enable; |
c906108c SS |
7215 | |
7216 | switch (b->type) | |
7217 | { | |
7218 | case bp_none: | |
8a3fe4f8 | 7219 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7220 | b->number); |
c906108c SS |
7221 | return 0; |
7222 | case bp_breakpoint: | |
7223 | case bp_hardware_breakpoint: | |
7224 | case bp_catch_load: | |
7225 | case bp_catch_unload: | |
7226 | if (b->addr_string == NULL) | |
7227 | { | |
7228 | /* Anything without a string can't be re-set. */ | |
7229 | delete_breakpoint (b); | |
7230 | return 0; | |
7231 | } | |
b18c45ed AC |
7232 | /* HACK: cagney/2001-11-11: kettenis/2001-11-11: MarkK wrote: |
7233 | ||
7234 | ``And a hack it is, although Apple's Darwin version of GDB | |
7235 | contains an almost identical hack to implement a "future | |
7236 | break" command. It seems to work in many real world cases, | |
7237 | but it is easy to come up with a test case where the patch | |
7238 | doesn't help at all.'' | |
7239 | ||
7240 | ``It seems that the way GDB implements breakpoints - in - | |
7241 | shared - libraries was designed for a.out shared library | |
7242 | systems (SunOS 4) where shared libraries were loaded at a | |
7243 | fixed address in memory. Since ELF shared libraries can (and | |
7244 | will) be loaded at any address in memory, things break. | |
7245 | Fixing this is not trivial. Therefore, I'm not sure whether | |
7246 | we should add this hack to the branch only. I cannot | |
7247 | guarantee that things will be fixed on the trunk in the near | |
7248 | future.'' | |
7249 | ||
7250 | In case we have a problem, disable this breakpoint. We'll | |
7251 | restore its status if we succeed. Don't disable a | |
7252 | shlib_disabled breakpoint though. There's a fair chance we | |
7253 | can't re-set it if the shared library it's in hasn't been | |
7254 | loaded yet. */ | |
0101ce28 JJ |
7255 | |
7256 | if (b->pending) | |
7257 | break; | |
7258 | ||
b5de0fa7 | 7259 | save_enable = b->enable_state; |
b18c45ed AC |
7260 | if (b->enable_state != bp_shlib_disabled) |
7261 | b->enable_state = bp_disabled; | |
84acb35a JJ |
7262 | else |
7263 | /* If resetting a shlib-disabled breakpoint, we don't want to | |
7264 | see an error message if it is not found since we will expect | |
7265 | this to occur until the shared library is finally reloaded. | |
7266 | We accomplish this by giving decode_line_1 a pointer to use | |
7267 | for silent notification that the symbol is not found. */ | |
7268 | not_found_ptr = ¬_found; | |
c906108c SS |
7269 | |
7270 | set_language (b->language); | |
7271 | input_radix = b->input_radix; | |
7272 | s = b->addr_string; | |
84acb35a JJ |
7273 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7274 | not_found_ptr); | |
c906108c SS |
7275 | for (i = 0; i < sals.nelts; i++) |
7276 | { | |
7277 | resolve_sal_pc (&sals.sals[i]); | |
7278 | ||
7279 | /* Reparse conditions, they might contain references to the | |
7280 | old symtab. */ | |
7281 | if (b->cond_string != NULL) | |
7282 | { | |
7283 | s = b->cond_string; | |
7284 | if (b->cond) | |
fad0733a DJ |
7285 | { |
7286 | xfree (b->cond); | |
7287 | /* Avoid re-freeing b->exp if an error during the call | |
7288 | to parse_exp_1. */ | |
7289 | b->cond = NULL; | |
7290 | } | |
c906108c SS |
7291 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7292 | } | |
7293 | ||
c5aa993b | 7294 | /* We need to re-set the breakpoint if the address changes... */ |
5cab636d | 7295 | if (b->loc->address != sals.sals[i].pc |
c5aa993b JM |
7296 | /* ...or new and old breakpoints both have source files, and |
7297 | the source file name or the line number changes... */ | |
c906108c SS |
7298 | || (b->source_file != NULL |
7299 | && sals.sals[i].symtab != NULL | |
6314a349 | 7300 | && (strcmp (b->source_file, sals.sals[i].symtab->filename) != 0 |
c906108c | 7301 | || b->line_number != sals.sals[i].line) |
c906108c | 7302 | ) |
c5aa993b JM |
7303 | /* ...or we switch between having a source file and not having |
7304 | one. */ | |
7305 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7306 | ) | |
c906108c SS |
7307 | { |
7308 | if (b->source_file != NULL) | |
b8c9b27d | 7309 | xfree (b->source_file); |
c906108c SS |
7310 | if (sals.sals[i].symtab == NULL) |
7311 | b->source_file = NULL; | |
7312 | else | |
7313 | b->source_file = | |
7314 | savestring (sals.sals[i].symtab->filename, | |
7315 | strlen (sals.sals[i].symtab->filename)); | |
7316 | b->line_number = sals.sals[i].line; | |
5cab636d DJ |
7317 | b->loc->requested_address = sals.sals[i].pc; |
7318 | b->loc->address | |
88f7da05 KB |
7319 | = adjust_breakpoint_address (b->loc->requested_address, |
7320 | b->type); | |
c906108c | 7321 | |
c5aa993b | 7322 | /* Used to check for duplicates here, but that can |
261c4ca2 | 7323 | cause trouble, as it doesn't check for disabled |
c5aa993b | 7324 | breakpoints. */ |
c906108c SS |
7325 | |
7326 | mention (b); | |
7327 | ||
7328 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7329 | rather than once for every breakpoint. */ |
c906108c SS |
7330 | breakpoints_changed (); |
7331 | } | |
cf3a9e5b | 7332 | b->loc->section = sals.sals[i].section; |
b5de0fa7 | 7333 | b->enable_state = save_enable; /* Restore it, this worked. */ |
c906108c SS |
7334 | |
7335 | ||
c5aa993b | 7336 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7337 | can be used. */ |
9f60f21b | 7338 | check_duplicates (b); |
c906108c SS |
7339 | |
7340 | } | |
b8c9b27d | 7341 | xfree (sals.sals); |
c906108c SS |
7342 | break; |
7343 | ||
7344 | case bp_watchpoint: | |
7345 | case bp_hardware_watchpoint: | |
7346 | case bp_read_watchpoint: | |
7347 | case bp_access_watchpoint: | |
7348 | innermost_block = NULL; | |
53a5351d JM |
7349 | /* The issue arises of what context to evaluate this in. The |
7350 | same one as when it was set, but what does that mean when | |
7351 | symbols have been re-read? We could save the filename and | |
7352 | functionname, but if the context is more local than that, the | |
7353 | best we could do would be something like how many levels deep | |
7354 | and which index at that particular level, but that's going to | |
7355 | be less stable than filenames or function names. */ | |
7356 | ||
c906108c SS |
7357 | /* So for now, just use a global context. */ |
7358 | if (b->exp) | |
a355c7de AC |
7359 | { |
7360 | xfree (b->exp); | |
7361 | /* Avoid re-freeing b->exp if an error during the call to | |
7362 | parse_expression. */ | |
7363 | b->exp = NULL; | |
7364 | } | |
c906108c SS |
7365 | b->exp = parse_expression (b->exp_string); |
7366 | b->exp_valid_block = innermost_block; | |
7367 | mark = value_mark (); | |
7368 | if (b->val) | |
a355c7de AC |
7369 | { |
7370 | value_free (b->val); | |
7371 | /* Avoid re-freeing b->val if an error during the call to | |
7372 | evaluate_expression. */ | |
7373 | b->val = NULL; | |
7374 | } | |
c906108c SS |
7375 | b->val = evaluate_expression (b->exp); |
7376 | release_value (b->val); | |
d69fe07e | 7377 | if (value_lazy (b->val) && breakpoint_enabled (b)) |
c906108c SS |
7378 | value_fetch_lazy (b->val); |
7379 | ||
7380 | if (b->cond_string != NULL) | |
7381 | { | |
7382 | s = b->cond_string; | |
7383 | if (b->cond) | |
a355c7de AC |
7384 | { |
7385 | xfree (b->cond); | |
7386 | /* Avoid re-freeing b->exp if an error during the call | |
7387 | to parse_exp_1. */ | |
7388 | b->cond = NULL; | |
7389 | } | |
c5aa993b | 7390 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c | 7391 | } |
468d015d | 7392 | if (breakpoint_enabled (b)) |
c906108c SS |
7393 | mention (b); |
7394 | value_free_to_mark (mark); | |
7395 | break; | |
c5aa993b JM |
7396 | case bp_catch_catch: |
7397 | case bp_catch_throw: | |
c906108c | 7398 | break; |
c5aa993b JM |
7399 | /* We needn't really do anything to reset these, since the mask |
7400 | that requests them is unaffected by e.g., new libraries being | |
7401 | loaded. */ | |
c906108c SS |
7402 | case bp_catch_fork: |
7403 | case bp_catch_vfork: | |
7404 | case bp_catch_exec: | |
7405 | break; | |
c5aa993b | 7406 | |
c906108c | 7407 | default: |
a3f17187 | 7408 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7409 | /* fall through */ |
1900040c MS |
7410 | /* Delete longjmp and overlay event breakpoints; they will be |
7411 | reset later by breakpoint_re_set. */ | |
c906108c SS |
7412 | case bp_longjmp: |
7413 | case bp_longjmp_resume: | |
1900040c | 7414 | case bp_overlay_event: |
c906108c SS |
7415 | delete_breakpoint (b); |
7416 | break; | |
7417 | ||
c5aa993b JM |
7418 | /* This breakpoint is special, it's set up when the inferior |
7419 | starts and we really don't want to touch it. */ | |
c906108c SS |
7420 | case bp_shlib_event: |
7421 | ||
c4093a6a JM |
7422 | /* Like bp_shlib_event, this breakpoint type is special. |
7423 | Once it is set up, we do not want to touch it. */ | |
7424 | case bp_thread_event: | |
7425 | ||
c5aa993b JM |
7426 | /* Keep temporary breakpoints, which can be encountered when we step |
7427 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7428 | Otherwise these should have been blown away via the cleanup chain | |
7429 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7430 | case bp_until: |
7431 | case bp_finish: | |
7432 | case bp_watchpoint_scope: | |
7433 | case bp_call_dummy: | |
7434 | case bp_step_resume: | |
7435 | break; | |
7436 | } | |
7437 | ||
7438 | return 0; | |
7439 | } | |
7440 | ||
7441 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7442 | void | |
fba45db2 | 7443 | breakpoint_re_set (void) |
c906108c SS |
7444 | { |
7445 | struct breakpoint *b, *temp; | |
7446 | enum language save_language; | |
7447 | int save_input_radix; | |
c5aa993b | 7448 | |
c906108c SS |
7449 | save_language = current_language->la_language; |
7450 | save_input_radix = input_radix; | |
7451 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7452 | { |
53a5351d | 7453 | /* Format possible error msg */ |
9ebf4acf AC |
7454 | char *message = xstrprintf ("Error in re-setting breakpoint %d:\n", |
7455 | b->number); | |
7456 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7457 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7458 | do_cleanups (cleanups); |
c5aa993b | 7459 | } |
c906108c SS |
7460 | set_language (save_language); |
7461 | input_radix = save_input_radix; | |
7462 | ||
9df628e0 RE |
7463 | if (GET_LONGJMP_TARGET_P ()) |
7464 | { | |
7465 | create_longjmp_breakpoint ("longjmp"); | |
7466 | create_longjmp_breakpoint ("_longjmp"); | |
7467 | create_longjmp_breakpoint ("siglongjmp"); | |
7468 | create_longjmp_breakpoint ("_siglongjmp"); | |
7469 | create_longjmp_breakpoint (NULL); | |
7470 | } | |
1900040c MS |
7471 | |
7472 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7473 | } |
7474 | \f | |
c906108c SS |
7475 | /* Reset the thread number of this breakpoint: |
7476 | ||
7477 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7478 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7479 | void |
fba45db2 | 7480 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7481 | { |
7482 | if (b->thread != -1) | |
7483 | { | |
39f77062 KB |
7484 | if (in_thread_list (inferior_ptid)) |
7485 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7486 | } |
7487 | } | |
7488 | ||
03ac34d5 MS |
7489 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7490 | If from_tty is nonzero, it prints a message to that effect, | |
7491 | which ends with a period (no newline). */ | |
7492 | ||
c906108c | 7493 | void |
fba45db2 | 7494 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7495 | { |
52f0bd74 | 7496 | struct breakpoint *b; |
c906108c SS |
7497 | |
7498 | if (count < 0) | |
7499 | count = 0; | |
7500 | ||
7501 | ALL_BREAKPOINTS (b) | |
7502 | if (b->number == bptnum) | |
c5aa993b JM |
7503 | { |
7504 | b->ignore_count = count; | |
221ea385 KS |
7505 | if (from_tty) |
7506 | { | |
7507 | if (count == 0) | |
a3f17187 | 7508 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7509 | bptnum); |
7510 | else if (count == 1) | |
a3f17187 | 7511 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7512 | bptnum); |
7513 | else | |
a3f17187 | 7514 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7515 | count, bptnum); |
7516 | } | |
c5aa993b | 7517 | breakpoints_changed (); |
221ea385 | 7518 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7519 | return; |
7520 | } | |
c906108c | 7521 | |
8a3fe4f8 | 7522 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7523 | } |
7524 | ||
7525 | /* Clear the ignore counts of all breakpoints. */ | |
7526 | void | |
fba45db2 | 7527 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7528 | { |
7529 | struct breakpoint *b; | |
7530 | ||
7531 | ALL_BREAKPOINTS (b) | |
7532 | b->ignore_count = 0; | |
7533 | } | |
7534 | ||
7535 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7536 | ||
7537 | static void | |
fba45db2 | 7538 | ignore_command (char *args, int from_tty) |
c906108c SS |
7539 | { |
7540 | char *p = args; | |
52f0bd74 | 7541 | int num; |
c906108c SS |
7542 | |
7543 | if (p == 0) | |
e2e0b3e5 | 7544 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7545 | |
c906108c | 7546 | num = get_number (&p); |
5c44784c | 7547 | if (num == 0) |
8a3fe4f8 | 7548 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7549 | if (*p == 0) |
8a3fe4f8 | 7550 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7551 | |
7552 | set_ignore_count (num, | |
7553 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7554 | from_tty); | |
221ea385 KS |
7555 | if (from_tty) |
7556 | printf_filtered ("\n"); | |
c906108c SS |
7557 | } |
7558 | \f | |
7559 | /* Call FUNCTION on each of the breakpoints | |
7560 | whose numbers are given in ARGS. */ | |
7561 | ||
7562 | static void | |
831662b3 | 7563 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7564 | { |
52f0bd74 | 7565 | char *p = args; |
c906108c | 7566 | char *p1; |
52f0bd74 AC |
7567 | int num; |
7568 | struct breakpoint *b, *tmp; | |
11cf8741 | 7569 | int match; |
c906108c SS |
7570 | |
7571 | if (p == 0) | |
e2e0b3e5 | 7572 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7573 | |
7574 | while (*p) | |
7575 | { | |
11cf8741 | 7576 | match = 0; |
c906108c | 7577 | p1 = p; |
c5aa993b | 7578 | |
5c44784c JM |
7579 | num = get_number_or_range (&p1); |
7580 | if (num == 0) | |
c5aa993b | 7581 | { |
8a3fe4f8 | 7582 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7583 | } |
7584 | else | |
7585 | { | |
7586 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7587 | if (b->number == num) | |
7588 | { | |
7589 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7590 | match = 1; |
5c44784c JM |
7591 | function (b); |
7592 | if (related_breakpoint) | |
7593 | function (related_breakpoint); | |
11cf8741 | 7594 | break; |
5c44784c | 7595 | } |
11cf8741 | 7596 | if (match == 0) |
a3f17187 | 7597 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7598 | } |
c906108c SS |
7599 | p = p1; |
7600 | } | |
7601 | } | |
7602 | ||
1900040c MS |
7603 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7604 | If from_tty is nonzero, it prints a message to that effect, | |
7605 | which ends with a period (no newline). */ | |
7606 | ||
c906108c | 7607 | void |
fba45db2 | 7608 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7609 | { |
7610 | /* Never disable a watchpoint scope breakpoint; we want to | |
7611 | hit them when we leave scope so we can delete both the | |
7612 | watchpoint and its scope breakpoint at that time. */ | |
7613 | if (bpt->type == bp_watchpoint_scope) | |
7614 | return; | |
7615 | ||
c2c6d25f | 7616 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7617 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7618 | return; |
7619 | ||
b5de0fa7 | 7620 | bpt->enable_state = bp_disabled; |
c906108c | 7621 | |
9f60f21b | 7622 | check_duplicates (bpt); |
c906108c | 7623 | |
9a4105ab AC |
7624 | if (deprecated_modify_breakpoint_hook) |
7625 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7626 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7627 | } |
7628 | ||
c906108c | 7629 | static void |
fba45db2 | 7630 | disable_command (char *args, int from_tty) |
c906108c | 7631 | { |
52f0bd74 | 7632 | struct breakpoint *bpt; |
c906108c SS |
7633 | if (args == 0) |
7634 | ALL_BREAKPOINTS (bpt) | |
7635 | switch (bpt->type) | |
c5aa993b JM |
7636 | { |
7637 | case bp_none: | |
8a3fe4f8 | 7638 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7639 | bpt->number); |
c5aa993b JM |
7640 | continue; |
7641 | case bp_breakpoint: | |
7642 | case bp_catch_load: | |
7643 | case bp_catch_unload: | |
7644 | case bp_catch_fork: | |
7645 | case bp_catch_vfork: | |
7646 | case bp_catch_exec: | |
7647 | case bp_catch_catch: | |
7648 | case bp_catch_throw: | |
7649 | case bp_hardware_breakpoint: | |
7650 | case bp_watchpoint: | |
7651 | case bp_hardware_watchpoint: | |
7652 | case bp_read_watchpoint: | |
7653 | case bp_access_watchpoint: | |
7654 | disable_breakpoint (bpt); | |
7655 | default: | |
7656 | continue; | |
7657 | } | |
c906108c SS |
7658 | else |
7659 | map_breakpoint_numbers (args, disable_breakpoint); | |
7660 | } | |
7661 | ||
7662 | static void | |
fba45db2 | 7663 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7664 | { |
c906108c SS |
7665 | int target_resources_ok, other_type_used; |
7666 | struct value *mark; | |
7667 | ||
7668 | if (bpt->type == bp_hardware_breakpoint) | |
7669 | { | |
7670 | int i; | |
c5aa993b | 7671 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7672 | target_resources_ok = |
7673 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7674 | i + 1, 0); | |
c906108c | 7675 | if (target_resources_ok == 0) |
8a3fe4f8 | 7676 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7677 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7678 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7679 | } |
7680 | ||
0101ce28 | 7681 | if (bpt->pending) |
c906108c | 7682 | { |
0101ce28 | 7683 | if (bpt->enable_state != bp_enabled) |
c906108c | 7684 | { |
0101ce28 JJ |
7685 | /* When enabling a pending breakpoint, we need to check if the breakpoint |
7686 | is resolvable since shared libraries could have been loaded | |
7687 | after the breakpoint was disabled. */ | |
7688 | breakpoints_changed (); | |
7689 | if (resolve_pending_breakpoint (bpt) == GDB_RC_OK) | |
c906108c | 7690 | { |
0101ce28 | 7691 | delete_breakpoint (bpt); |
c906108c SS |
7692 | return; |
7693 | } | |
0101ce28 JJ |
7694 | bpt->enable_state = bp_enabled; |
7695 | bpt->disposition = disposition; | |
c906108c | 7696 | } |
0101ce28 JJ |
7697 | } |
7698 | else /* Not a pending breakpoint. */ | |
7699 | { | |
7700 | if (bpt->enable_state != bp_permanent) | |
7701 | bpt->enable_state = bp_enabled; | |
7702 | bpt->disposition = disposition; | |
7703 | check_duplicates (bpt); | |
7704 | breakpoints_changed (); | |
7705 | ||
7706 | if (bpt->type == bp_watchpoint || | |
7707 | bpt->type == bp_hardware_watchpoint || | |
7708 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7709 | bpt->type == bp_access_watchpoint) |
7710 | { | |
7789d0fa AC |
7711 | struct frame_id saved_frame_id; |
7712 | ||
b04f3ab4 | 7713 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); |
0101ce28 JJ |
7714 | if (bpt->exp_valid_block != NULL) |
7715 | { | |
7716 | struct frame_info *fr = | |
7717 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7718 | if (fr == NULL) | |
7719 | { | |
a3f17187 | 7720 | printf_filtered (_("\ |
0101ce28 | 7721 | Cannot enable watchpoint %d because the block in which its expression\n\ |
a3f17187 | 7722 | is valid is not currently in scope.\n"), bpt->number); |
0101ce28 JJ |
7723 | bpt->enable_state = bp_disabled; |
7724 | return; | |
7725 | } | |
0101ce28 JJ |
7726 | select_frame (fr); |
7727 | } | |
7728 | ||
7729 | value_free (bpt->val); | |
7730 | mark = value_mark (); | |
7731 | bpt->val = evaluate_expression (bpt->exp); | |
7732 | release_value (bpt->val); | |
d69fe07e | 7733 | if (value_lazy (bpt->val)) |
0101ce28 JJ |
7734 | value_fetch_lazy (bpt->val); |
7735 | ||
7736 | if (bpt->type == bp_hardware_watchpoint || | |
7737 | bpt->type == bp_read_watchpoint || | |
7738 | bpt->type == bp_access_watchpoint) | |
c5aa993b | 7739 | { |
0101ce28 JJ |
7740 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7741 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7742 | ||
7743 | /* Hack around 'unused var' error for some targets here */ | |
d5d6fca5 | 7744 | (void) mem_cnt, (void) i; |
0101ce28 JJ |
7745 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( |
7746 | bpt->type, i + mem_cnt, other_type_used); | |
7747 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7748 | bp_watchpoint in the following condition */ | |
7749 | if (target_resources_ok < 0) | |
7750 | { | |
a3f17187 | 7751 | printf_filtered (_("\ |
c906108c | 7752 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7753 | have been allocated for other watchpoints.\n"), bpt->number); |
0101ce28 JJ |
7754 | bpt->enable_state = bp_disabled; |
7755 | value_free_to_mark (mark); | |
7756 | return; | |
7757 | } | |
c5aa993b | 7758 | } |
0101ce28 | 7759 | |
7789d0fa | 7760 | select_frame (frame_find_by_id (saved_frame_id)); |
0101ce28 | 7761 | value_free_to_mark (mark); |
c5aa993b | 7762 | } |
c906108c | 7763 | } |
0101ce28 | 7764 | |
9a4105ab AC |
7765 | if (deprecated_modify_breakpoint_hook) |
7766 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7767 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7768 | } |
7769 | ||
7770 | void | |
fba45db2 | 7771 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7772 | { |
7773 | do_enable_breakpoint (bpt, bpt->disposition); | |
7774 | } | |
7775 | ||
7776 | /* The enable command enables the specified breakpoints (or all defined | |
7777 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7778 | in stopping the inferior. */ |
c906108c | 7779 | |
c906108c | 7780 | static void |
fba45db2 | 7781 | enable_command (char *args, int from_tty) |
c906108c | 7782 | { |
52f0bd74 | 7783 | struct breakpoint *bpt; |
c906108c SS |
7784 | if (args == 0) |
7785 | ALL_BREAKPOINTS (bpt) | |
7786 | switch (bpt->type) | |
c5aa993b JM |
7787 | { |
7788 | case bp_none: | |
8a3fe4f8 | 7789 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7790 | bpt->number); |
c5aa993b JM |
7791 | continue; |
7792 | case bp_breakpoint: | |
7793 | case bp_catch_load: | |
7794 | case bp_catch_unload: | |
7795 | case bp_catch_fork: | |
7796 | case bp_catch_vfork: | |
7797 | case bp_catch_exec: | |
7798 | case bp_catch_catch: | |
7799 | case bp_catch_throw: | |
7800 | case bp_hardware_breakpoint: | |
7801 | case bp_watchpoint: | |
7802 | case bp_hardware_watchpoint: | |
7803 | case bp_read_watchpoint: | |
7804 | case bp_access_watchpoint: | |
7805 | enable_breakpoint (bpt); | |
7806 | default: | |
7807 | continue; | |
7808 | } | |
c906108c SS |
7809 | else |
7810 | map_breakpoint_numbers (args, enable_breakpoint); | |
7811 | } | |
7812 | ||
7813 | static void | |
fba45db2 | 7814 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7815 | { |
b5de0fa7 | 7816 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7817 | } |
7818 | ||
c906108c | 7819 | static void |
fba45db2 | 7820 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7821 | { |
7822 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7823 | } | |
7824 | ||
7825 | static void | |
fba45db2 | 7826 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7827 | { |
b5de0fa7 | 7828 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7829 | } |
7830 | ||
c906108c | 7831 | static void |
fba45db2 | 7832 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7833 | { |
7834 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7835 | } | |
7836 | \f | |
fa8d40ab JJ |
7837 | static void |
7838 | set_breakpoint_cmd (char *args, int from_tty) | |
7839 | { | |
7840 | } | |
7841 | ||
7842 | static void | |
7843 | show_breakpoint_cmd (char *args, int from_tty) | |
7844 | { | |
7845 | } | |
7846 | ||
c906108c SS |
7847 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7848 | ||
7849 | struct symtabs_and_lines | |
fba45db2 | 7850 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7851 | { |
7852 | struct symtabs_and_lines sals; | |
7853 | if (string == 0) | |
8a3fe4f8 | 7854 | error (_("Empty line specification.")); |
c906108c SS |
7855 | if (default_breakpoint_valid) |
7856 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7857 | default_breakpoint_symtab, |
7858 | default_breakpoint_line, | |
68219205 | 7859 | (char ***) NULL, NULL); |
c906108c SS |
7860 | else |
7861 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7862 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7863 | if (*string) |
8a3fe4f8 | 7864 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7865 | return sals; |
7866 | } | |
8181d85f DJ |
7867 | |
7868 | /* Create and insert a raw software breakpoint at PC. Return an | |
7869 | identifier, which should be used to remove the breakpoint later. | |
7870 | In general, places which call this should be using something on the | |
7871 | breakpoint chain instead; this function should be eliminated | |
7872 | someday. */ | |
7873 | ||
7874 | void * | |
7875 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
7876 | { | |
7877 | struct bp_target_info *bp_tgt; | |
7878 | ||
7879 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
7880 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
7881 | ||
7882 | bp_tgt->placed_address = pc; | |
7883 | if (target_insert_breakpoint (bp_tgt) != 0) | |
7884 | { | |
7885 | /* Could not insert the breakpoint. */ | |
7886 | xfree (bp_tgt); | |
7887 | return NULL; | |
7888 | } | |
7889 | ||
7890 | return bp_tgt; | |
7891 | } | |
7892 | ||
7893 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
7894 | ||
7895 | int | |
7896 | deprecated_remove_raw_breakpoint (void *bp) | |
7897 | { | |
7898 | struct bp_target_info *bp_tgt = bp; | |
7899 | int ret; | |
7900 | ||
7901 | ret = target_remove_breakpoint (bp_tgt); | |
7902 | xfree (bp_tgt); | |
7903 | ||
7904 | return ret; | |
7905 | } | |
7906 | ||
7907 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
7908 | ||
7909 | static void *single_step_breakpoints[2]; | |
7910 | ||
7911 | /* Create and insert a breakpoint for software single step. */ | |
7912 | ||
7913 | void | |
7914 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
7915 | { | |
7916 | void **bpt_p; | |
7917 | ||
7918 | if (single_step_breakpoints[0] == NULL) | |
7919 | bpt_p = &single_step_breakpoints[0]; | |
7920 | else | |
7921 | { | |
7922 | gdb_assert (single_step_breakpoints[1] == NULL); | |
7923 | bpt_p = &single_step_breakpoints[1]; | |
7924 | } | |
7925 | ||
7926 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
7927 | to only create the breakpoints once, and actually put them on the | |
7928 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
7929 | adjust the addresses each time they were needed. Doing this requires | |
7930 | corresponding changes elsewhere where single step breakpoints are | |
7931 | handled, however. So, for now, we use this. */ | |
7932 | ||
7933 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
7934 | if (*bpt_p == NULL) | |
1893a4c0 | 7935 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
7936 | paddr_nz (next_pc)); |
7937 | } | |
7938 | ||
7939 | /* Remove and delete any breakpoints used for software single step. */ | |
7940 | ||
7941 | void | |
7942 | remove_single_step_breakpoints (void) | |
7943 | { | |
7944 | gdb_assert (single_step_breakpoints[0] != NULL); | |
7945 | ||
7946 | /* See insert_single_step_breakpoint for more about this deprecated | |
7947 | call. */ | |
7948 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
7949 | single_step_breakpoints[0] = NULL; | |
7950 | ||
7951 | if (single_step_breakpoints[1] != NULL) | |
7952 | { | |
7953 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
7954 | single_step_breakpoints[1] = NULL; | |
7955 | } | |
7956 | } | |
7957 | ||
c906108c | 7958 | \f |
31e2b00f AS |
7959 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
7960 | It is defined as a macro to prevent duplication. | |
7961 | COMMAND should be a string constant containing the name of the command. */ | |
7962 | #define BREAK_ARGS_HELP(command) \ | |
7963 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
7964 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
7965 | If a line number is specified, break at start of code for that line.\n\ | |
7966 | If a function is specified, break at start of code for that function.\n\ | |
7967 | If an address is specified, break at that exact address.\n\ | |
7968 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
7969 | This is useful for breaking on return to a stack frame.\n\ | |
7970 | \n\ | |
7971 | THREADNUM is the number from \"info threads\".\n\ | |
7972 | CONDITION is a boolean expression.\n\ | |
7973 | \n\ | |
7974 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7975 | \n\ | |
7976 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
7977 | ||
c906108c | 7978 | void |
fba45db2 | 7979 | _initialize_breakpoint (void) |
c906108c | 7980 | { |
fa8d40ab JJ |
7981 | static struct cmd_list_element *breakpoint_set_cmdlist; |
7982 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
7983 | struct cmd_list_element *c; |
7984 | ||
84acb35a | 7985 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 7986 | |
c906108c SS |
7987 | breakpoint_chain = 0; |
7988 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7989 | before a breakpoint is set. */ | |
7990 | breakpoint_count = 0; | |
7991 | ||
1bedd215 AC |
7992 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
7993 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
7994 | Usage is `ignore N COUNT'.")); | |
c906108c | 7995 | if (xdb_commands) |
c5aa993b | 7996 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 7997 | |
1bedd215 AC |
7998 | add_com ("commands", class_breakpoint, commands_command, _("\ |
7999 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8000 | Give breakpoint number as argument after \"commands\".\n\ |
8001 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8002 | The commands themselves follow starting on the next line.\n\ | |
8003 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8004 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8005 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8006 | |
1bedd215 AC |
8007 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8008 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8009 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8010 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8011 | |
1bedd215 | 8012 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8013 | Set a temporary breakpoint.\n\ |
c906108c SS |
8014 | Like \"break\" except the breakpoint is only temporary,\n\ |
8015 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8016 | by using \"enable delete\" on the breakpoint number.\n\ |
8017 | \n" | |
8018 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8019 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8020 | |
1bedd215 | 8021 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8022 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8023 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8024 | some target hardware may not have this support.\n\ |
8025 | \n" | |
8026 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8027 | set_cmd_completer (c, location_completer); |
c906108c | 8028 | |
1bedd215 | 8029 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8030 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8031 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8032 | so it will be deleted when hit.\n\ |
8033 | \n" | |
8034 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8035 | set_cmd_completer (c, location_completer); |
c906108c | 8036 | |
1bedd215 AC |
8037 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8038 | Enable some breakpoints.\n\ | |
c906108c SS |
8039 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8040 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8041 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8042 | With a subcommand you can enable temporarily."), |
c906108c SS |
8043 | &enablelist, "enable ", 1, &cmdlist); |
8044 | if (xdb_commands) | |
1bedd215 AC |
8045 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8046 | Enable some breakpoints.\n\ | |
c906108c SS |
8047 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8048 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8049 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8050 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8051 | |
8052 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8053 | ||
1bedd215 AC |
8054 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8055 | Enable some breakpoints.\n\ | |
c906108c SS |
8056 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8057 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8058 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8059 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8060 | |
1a966eab AC |
8061 | add_cmd ("once", no_class, enable_once_command, _("\ |
8062 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8063 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8064 | &enablebreaklist); |
8065 | ||
1a966eab AC |
8066 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8067 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8068 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8069 | &enablebreaklist); |
8070 | ||
1a966eab AC |
8071 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8072 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8073 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8074 | &enablelist); |
8075 | ||
1a966eab AC |
8076 | add_cmd ("once", no_class, enable_once_command, _("\ |
8077 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8078 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8079 | &enablelist); |
8080 | ||
1bedd215 AC |
8081 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8082 | Disable some breakpoints.\n\ | |
c906108c SS |
8083 | Arguments are breakpoint numbers with spaces in between.\n\ |
8084 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8085 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8086 | &disablelist, "disable ", 1, &cmdlist); |
8087 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8088 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8089 | if (xdb_commands) | |
1bedd215 AC |
8090 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8091 | Disable some breakpoints.\n\ | |
c906108c SS |
8092 | Arguments are breakpoint numbers with spaces in between.\n\ |
8093 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8094 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8095 | |
1a966eab AC |
8096 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8097 | Disable some breakpoints.\n\ | |
c906108c SS |
8098 | Arguments are breakpoint numbers with spaces in between.\n\ |
8099 | To disable all breakpoints, give no argument.\n\ | |
8100 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8101 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8102 | &disablelist); |
8103 | ||
1bedd215 AC |
8104 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8105 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8106 | Arguments are breakpoint numbers with spaces in between.\n\ |
8107 | To delete all breakpoints, give no argument.\n\ | |
8108 | \n\ | |
8109 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8110 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8111 | &deletelist, "delete ", 1, &cmdlist); |
8112 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8113 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8114 | if (xdb_commands) |
1bedd215 AC |
8115 | add_com ("db", class_breakpoint, delete_command, _("\ |
8116 | Delete some breakpoints.\n\ | |
c906108c | 8117 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8118 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8119 | |
1a966eab AC |
8120 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8121 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8122 | Arguments are breakpoint numbers with spaces in between.\n\ |
8123 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8124 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8125 | &deletelist); |
8126 | ||
1bedd215 AC |
8127 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8128 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8129 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8130 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8131 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8132 | If an address is specified, breakpoints at that address are cleared.\n\ |
8133 | \n\ | |
8134 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8135 | is executing in.\n\ |
8136 | \n\ | |
1bedd215 | 8137 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8138 | |
1bedd215 | 8139 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8140 | Set breakpoint at specified line or function.\n" |
8141 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8142 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8143 | |
c906108c SS |
8144 | add_com_alias ("b", "break", class_run, 1); |
8145 | add_com_alias ("br", "break", class_run, 1); | |
8146 | add_com_alias ("bre", "break", class_run, 1); | |
8147 | add_com_alias ("brea", "break", class_run, 1); | |
8148 | ||
502fd408 | 8149 | if (xdb_commands) |
c906108c SS |
8150 | { |
8151 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8152 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8153 | } |
8154 | ||
8155 | if (dbx_commands) | |
8156 | { | |
1bedd215 AC |
8157 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8158 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8159 | &stoplist, "stop ", 1, &cmdlist); |
8160 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8161 | _("Break in function or address."), &stoplist); |
c5aa993b | 8162 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8163 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8164 | add_com ("status", class_info, breakpoints_info, _("\ |
8165 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8166 | The \"Type\" column indicates one of:\n\ |
8167 | \tbreakpoint - normal breakpoint\n\ | |
8168 | \twatchpoint - watchpoint\n\ | |
8169 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8170 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8171 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8172 | address and file/line number respectively.\n\ |
8173 | \n\ | |
8174 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8175 | are set to the address of the last breakpoint listed.\n\n\ |
8176 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8177 | breakpoint set.")); |
c906108c SS |
8178 | } |
8179 | ||
1bedd215 AC |
8180 | add_info ("breakpoints", breakpoints_info, _("\ |
8181 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8182 | The \"Type\" column indicates one of:\n\ |
8183 | \tbreakpoint - normal breakpoint\n\ | |
8184 | \twatchpoint - watchpoint\n\ | |
8185 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8186 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8187 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8188 | address and file/line number respectively.\n\ |
8189 | \n\ | |
8190 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8191 | are set to the address of the last breakpoint listed.\n\n\ |
8192 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8193 | breakpoint set.")); |
c906108c SS |
8194 | |
8195 | if (xdb_commands) | |
1bedd215 AC |
8196 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8197 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8198 | The \"Type\" column indicates one of:\n\ |
8199 | \tbreakpoint - normal breakpoint\n\ | |
8200 | \twatchpoint - watchpoint\n\ | |
8201 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8202 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8203 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8204 | address and file/line number respectively.\n\ |
8205 | \n\ | |
8206 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
c906108c SS |
8207 | are set to the address of the last breakpoint listed.\n\n\ |
8208 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
1bedd215 | 8209 | breakpoint set.")); |
c906108c | 8210 | |
1a966eab AC |
8211 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8212 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8213 | The \"Type\" column indicates one of:\n\ |
8214 | \tbreakpoint - normal breakpoint\n\ | |
8215 | \twatchpoint - watchpoint\n\ | |
8216 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8217 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8218 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8219 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8220 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8221 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8222 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8223 | address and file/line number respectively.\n\ |
8224 | \n\ | |
8225 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
8226 | are set to the address of the last breakpoint listed.\n\ | |
8227 | \n\ | |
c906108c | 8228 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8229 | breakpoint set."), |
c906108c SS |
8230 | &maintenanceinfolist); |
8231 | ||
1bedd215 AC |
8232 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8233 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8234 | Raised signals may be caught:\n\ |
8235 | \tcatch signal - all signals\n\ | |
8236 | \tcatch signal <signame> - a particular signal\n\ | |
8237 | Raised exceptions may be caught:\n\ | |
8238 | \tcatch throw - all exceptions, when thrown\n\ | |
8239 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8240 | \tcatch catch - all exceptions, when caught\n\ | |
8241 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8242 | Thread or process events may be caught:\n\ | |
8243 | \tcatch thread_start - any threads, just after creation\n\ | |
8244 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8245 | \tcatch thread_join - any threads, just after joins\n\ | |
8246 | Process events may be caught:\n\ | |
8247 | \tcatch start - any processes, just after creation\n\ | |
8248 | \tcatch exit - any processes, just before expiration\n\ | |
8249 | \tcatch fork - calls to fork()\n\ | |
8250 | \tcatch vfork - calls to vfork()\n\ | |
8251 | \tcatch exec - calls to exec()\n\ | |
8252 | Dynamically-linked library events may be caught:\n\ | |
8253 | \tcatch load - loads of any library\n\ | |
8254 | \tcatch load <libname> - loads of a particular library\n\ | |
8255 | \tcatch unload - unloads of any library\n\ | |
8256 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8257 | The act of your program's execution stopping may also be caught:\n\ | |
8258 | \tcatch stop\n\n\ | |
8259 | C++ exceptions may be caught:\n\ | |
8260 | \tcatch throw - all exceptions, when thrown\n\ | |
8261 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8262 | Ada exceptions may be caught:\n\ |
8263 | \tcatch exception - all exceptions, when raised\n\ | |
8264 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8265 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8266 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8267 | \n\ |
8268 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8269 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8270 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8271 | |
1bedd215 AC |
8272 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8273 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8274 | Args like \"catch\" command.\n\ |
8275 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8276 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8277 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8278 | |
1bedd215 AC |
8279 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8280 | Set a watchpoint for an expression.\n\ | |
c906108c | 8281 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8282 | an expression changes.")); |
5ba2abeb | 8283 | set_cmd_completer (c, location_completer); |
c906108c | 8284 | |
1bedd215 AC |
8285 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8286 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8287 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8288 | an expression is read.")); |
5ba2abeb | 8289 | set_cmd_completer (c, location_completer); |
c906108c | 8290 | |
1bedd215 AC |
8291 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8292 | Set a watchpoint for an expression.\n\ | |
c906108c | 8293 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8294 | an expression is either read or written.")); |
5ba2abeb | 8295 | set_cmd_completer (c, location_completer); |
c906108c SS |
8296 | |
8297 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8298 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8299 | |
8300 | ||
920d2a44 AC |
8301 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8302 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8303 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8304 | &can_use_hw_watchpoints, _("\ | |
8305 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8306 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8307 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8308 | such is available. (However, any hardware watchpoints that were\n\ | |
8309 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8310 | hardware.)"), |
8311 | NULL, | |
920d2a44 | 8312 | show_can_use_hw_watchpoints, |
85c07804 | 8313 | &setlist, &showlist); |
c906108c SS |
8314 | |
8315 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8316 | |
1bedd215 | 8317 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8318 | Breakpoint specific settings\n\ |
8319 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8320 | pending breakpoint behavior"), |
fa8d40ab JJ |
8321 | &breakpoint_set_cmdlist, "set breakpoint ", |
8322 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8323 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8324 | Breakpoint specific settings\n\ |
8325 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8326 | pending breakpoint behavior"), |
fa8d40ab JJ |
8327 | &breakpoint_show_cmdlist, "show breakpoint ", |
8328 | 0/*allow-unknown*/, &showlist); | |
8329 | ||
7915a72c AC |
8330 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8331 | &pending_break_support, _("\ | |
8332 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8333 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8334 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8335 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8336 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8337 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8338 | NULL, |
920d2a44 | 8339 | show_pending_break_support, |
6e1d7d6c AC |
8340 | &breakpoint_set_cmdlist, |
8341 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8342 | |
8343 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8344 | |
8345 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8346 | &automatic_hardware_breakpoints, _("\ | |
8347 | Set automatic usage of hardware breakpoints."), _("\ | |
8348 | Show automatic usage of hardware breakpoints."), _("\ | |
8349 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8350 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8351 | a warning will be emitted for such breakpoints."), | |
8352 | NULL, | |
8353 | show_automatic_hardware_breakpoints, | |
8354 | &breakpoint_set_cmdlist, | |
8355 | &breakpoint_show_cmdlist); | |
8356 | ||
8357 | automatic_hardware_breakpoints = 1; | |
c906108c | 8358 | } |