Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 DJ |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
5 | 2008 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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
39 | #include "demangle.h" | |
40 | #include "annotate.h" | |
41 | #include "symfile.h" | |
42 | #include "objfiles.h" | |
0378c332 | 43 | #include "source.h" |
c5f0f3d0 | 44 | #include "linespec.h" |
c94fdfd0 | 45 | #include "completer.h" |
5b7f31a4 | 46 | #include "gdb.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
0225421b | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
fa4727a6 | 58 | #include "wrapper.h" |
c906108c | 59 | |
104c1213 | 60 | #include "gdb-events.h" |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
74960c60 VP |
63 | #include "gdb_stdint.h" |
64 | ||
c906108c SS |
65 | /* Prototypes for local functions. */ |
66 | ||
f107f563 VP |
67 | static void until_break_command_continuation (struct continuation_arg *arg, |
68 | int error); | |
c2c6d25f | 69 | |
a14ed312 | 70 | static void catch_command_1 (char *, int, int); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_delete_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 75 | |
a14ed312 | 76 | static void enable_once_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 79 | |
a14ed312 | 80 | static void disable_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 85 | |
a14ed312 | 86 | static void ignore_command (char *, int); |
c906108c | 87 | |
4efb68b1 | 88 | static int breakpoint_re_set_one (void *); |
c906108c | 89 | |
a14ed312 | 90 | static void clear_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void catch_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static void watch_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 97 | |
98deb0da | 98 | static void break_command_1 (char *, int, int); |
c906108c | 99 | |
a14ed312 | 100 | static void mention (struct breakpoint *); |
c906108c | 101 | |
4d28f7a8 | 102 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 103 | |
9f60f21b | 104 | static void check_duplicates (struct breakpoint *); |
c906108c | 105 | |
76897487 KB |
106 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
107 | ||
88f7da05 KB |
108 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
109 | enum bptype bptype); | |
76897487 | 110 | |
d674a25c | 111 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void breakpoints_info (char *, int); |
c906108c | 114 | |
a14ed312 | 115 | static void breakpoint_1 (int, int); |
c906108c | 116 | |
89f9893c | 117 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 118 | |
4efb68b1 | 119 | static int breakpoint_cond_eval (void *); |
c906108c | 120 | |
4efb68b1 | 121 | static void cleanup_executing_breakpoints (void *); |
c906108c | 122 | |
a14ed312 | 123 | static void commands_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void condition_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static int get_number_trailer (char **, int); |
c906108c | 128 | |
a14ed312 | 129 | void set_breakpoint_count (int); |
c906108c | 130 | |
c5aa993b JM |
131 | typedef enum |
132 | { | |
133 | mark_inserted, | |
134 | mark_uninserted | |
135 | } | |
136 | insertion_state_t; | |
c906108c | 137 | |
0bde7532 | 138 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 139 | |
a14ed312 | 140 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
141 | |
142 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 143 | |
4efb68b1 | 144 | static int watchpoint_check (void *); |
c906108c | 145 | |
a14ed312 | 146 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 147 | |
1900040c MS |
148 | static void create_overlay_event_breakpoint (char *); |
149 | ||
a14ed312 | 150 | static int hw_breakpoint_used_count (void); |
c906108c | 151 | |
a14ed312 | 152 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 153 | |
a14ed312 | 154 | static void hbreak_command (char *, int); |
c906108c | 155 | |
a14ed312 | 156 | static void thbreak_command (char *, int); |
c906108c | 157 | |
a14ed312 | 158 | static void watch_command_1 (char *, int, int); |
c906108c | 159 | |
a14ed312 | 160 | static void rwatch_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void awatch_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 165 | |
a14ed312 KB |
166 | static void create_fork_vfork_event_catchpoint (int tempflag, |
167 | char *cond_string, | |
168 | enum bptype bp_kind); | |
7a292a7a | 169 | |
a14ed312 | 170 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 171 | |
a14ed312 | 172 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 173 | |
a14ed312 | 174 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 175 | |
a14ed312 | 176 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 177 | |
a14ed312 | 178 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 179 | |
a14ed312 | 180 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 181 | |
d85310f7 MS |
182 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
183 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 184 | |
a14ed312 | 185 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 188 | |
1aafd4da UW |
189 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
190 | ||
fe3f5fa8 VP |
191 | static void free_bp_location (struct bp_location *loc); |
192 | ||
55a3f01f VP |
193 | static void mark_breakpoints_out (void); |
194 | ||
a5606eee VP |
195 | static struct bp_location * |
196 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
197 | ||
74960c60 | 198 | static void update_global_location_list (void); |
a5606eee | 199 | |
74960c60 VP |
200 | static void update_global_location_list_nothrow (void); |
201 | ||
202 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
203 | ||
204 | static void insert_breakpoint_locations (void); | |
a5606eee | 205 | |
2cec12e5 AR |
206 | static const char * |
207 | bpdisp_text (enum bpdisp disp) | |
208 | { | |
209 | /* NOTE: the following values are a part of MI protocol and represent | |
210 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
211 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
212 | return bpdisps[(int) disp]; | |
213 | } | |
c906108c | 214 | |
2cec12e5 | 215 | /* Prototypes for exported functions. */ |
c906108c SS |
216 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
217 | if such is available. */ | |
218 | static int can_use_hw_watchpoints; | |
219 | ||
920d2a44 AC |
220 | static void |
221 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
222 | struct cmd_list_element *c, | |
223 | const char *value) | |
224 | { | |
225 | fprintf_filtered (file, _("\ | |
226 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
227 | value); | |
228 | } | |
229 | ||
fa8d40ab JJ |
230 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
231 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
232 | for unrecognized breakpoint locations. | |
233 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
234 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
235 | static void |
236 | show_pending_break_support (struct ui_file *file, int from_tty, | |
237 | struct cmd_list_element *c, | |
238 | const char *value) | |
239 | { | |
240 | fprintf_filtered (file, _("\ | |
241 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
242 | value); | |
243 | } | |
fa8d40ab | 244 | |
765dc015 VP |
245 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
246 | set with "break" but falling in read-only memory. | |
247 | If 0, gdb will warn about such breakpoints, but won't automatically | |
248 | use hardware breakpoints. */ | |
249 | static int automatic_hardware_breakpoints; | |
250 | static void | |
251 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
252 | struct cmd_list_element *c, | |
253 | const char *value) | |
254 | { | |
255 | fprintf_filtered (file, _("\ | |
256 | Automatic usage of hardware breakpoints is %s.\n"), | |
257 | value); | |
258 | } | |
259 | ||
74960c60 VP |
260 | /* If 1, gdb will keep breakpoints inserted even as inferior is stopped, |
261 | and immediately insert any new breakpoints. If 0, gdb will insert | |
262 | breakpoints into inferior only when resuming it, and will remove | |
263 | breakpoints upon stop. */ | |
264 | static int always_inserted_mode = 0; | |
265 | static void | |
266 | show_always_inserted_mode (struct ui_file *file, int from_tty, | |
267 | struct cmd_list_element *c, const char *value) | |
268 | { | |
269 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
270 | } | |
271 | ||
765dc015 | 272 | |
a14ed312 | 273 | void _initialize_breakpoint (void); |
c906108c | 274 | |
c5aa993b | 275 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 276 | |
c906108c SS |
277 | /* Are we executing breakpoint commands? */ |
278 | static int executing_breakpoint_commands; | |
279 | ||
c02f5703 MS |
280 | /* Are overlay event breakpoints enabled? */ |
281 | static int overlay_events_enabled; | |
282 | ||
c906108c SS |
283 | /* Walk the following statement or block through all breakpoints. |
284 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
285 | breakpoint. */ | |
286 | ||
5c44784c | 287 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 288 | |
5c44784c JM |
289 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
290 | for (B = breakpoint_chain; \ | |
291 | B ? (TMP=B->next, 1): 0; \ | |
292 | B = TMP) | |
c906108c | 293 | |
7cc221ef DJ |
294 | /* Similar iterators for the low-level breakpoints. */ |
295 | ||
0d381245 | 296 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
297 | |
298 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
299 | for (B = bp_location_chain; \ | |
0d381245 | 300 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
301 | B = TMP) |
302 | ||
c906108c SS |
303 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
304 | ||
305 | int show_breakpoint_hit_counts = 1; | |
306 | ||
7cc221ef | 307 | /* Chains of all breakpoints defined. */ |
c906108c SS |
308 | |
309 | struct breakpoint *breakpoint_chain; | |
310 | ||
7cc221ef DJ |
311 | struct bp_location *bp_location_chain; |
312 | ||
c906108c SS |
313 | /* Number of last breakpoint made. */ |
314 | ||
315 | int breakpoint_count; | |
316 | ||
c906108c SS |
317 | /* This function returns a pointer to the string representation of the |
318 | pathname of the dynamically-linked library that has just been | |
319 | loaded. | |
320 | ||
321 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
322 | or undefined results are guaranteed. | |
323 | ||
324 | This string's contents are only valid immediately after the | |
325 | inferior has stopped in the dynamic linker hook, and becomes | |
326 | invalid as soon as the inferior is continued. Clients should make | |
327 | a copy of this string if they wish to continue the inferior and | |
328 | then access the string. */ | |
329 | ||
330 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
331 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
332 | #endif | |
333 | ||
334 | /* This function returns a pointer to the string representation of the | |
335 | pathname of the dynamically-linked library that has just been | |
336 | unloaded. | |
337 | ||
338 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
339 | TRUE, or undefined results are guaranteed. | |
340 | ||
341 | This string's contents are only valid immediately after the | |
342 | inferior has stopped in the dynamic linker hook, and becomes | |
343 | invalid as soon as the inferior is continued. Clients should make | |
344 | a copy of this string if they wish to continue the inferior and | |
345 | then access the string. */ | |
346 | ||
347 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
348 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
349 | #endif | |
350 | ||
351 | /* This function is called by the "catch load" command. It allows the | |
352 | debugger to be notified by the dynamic linker when a specified | |
353 | library file (or any library file, if filename is NULL) is loaded. */ | |
354 | ||
355 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
356 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 357 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
358 | #endif |
359 | ||
360 | /* This function is called by the "catch unload" command. It allows | |
361 | the debugger to be notified by the dynamic linker when a specified | |
362 | library file (or any library file, if filename is NULL) is | |
363 | unloaded. */ | |
364 | ||
365 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 366 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 367 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
368 | #endif |
369 | ||
468d015d JJ |
370 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
371 | static int | |
372 | breakpoint_enabled (struct breakpoint *b) | |
373 | { | |
0d381245 | 374 | return (b->enable_state == bp_enabled); |
468d015d JJ |
375 | } |
376 | ||
c906108c SS |
377 | /* Set breakpoint count to NUM. */ |
378 | ||
379 | void | |
fba45db2 | 380 | set_breakpoint_count (int num) |
c906108c SS |
381 | { |
382 | breakpoint_count = num; | |
383 | set_internalvar (lookup_internalvar ("bpnum"), | |
384 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
385 | } | |
386 | ||
387 | /* Used in run_command to zero the hit count when a new run starts. */ | |
388 | ||
389 | void | |
fba45db2 | 390 | clear_breakpoint_hit_counts (void) |
c906108c SS |
391 | { |
392 | struct breakpoint *b; | |
393 | ||
394 | ALL_BREAKPOINTS (b) | |
395 | b->hit_count = 0; | |
396 | } | |
397 | ||
398 | /* Default address, symtab and line to put a breakpoint at | |
399 | for "break" command with no arg. | |
400 | if default_breakpoint_valid is zero, the other three are | |
401 | not valid, and "break" with no arg is an error. | |
402 | ||
403 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
404 | ||
405 | int default_breakpoint_valid; | |
406 | CORE_ADDR default_breakpoint_address; | |
407 | struct symtab *default_breakpoint_symtab; | |
408 | int default_breakpoint_line; | |
409 | \f | |
410 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
411 | Advance *PP after the string and any trailing whitespace. | |
412 | ||
413 | Currently the string can either be a number or "$" followed by the name | |
414 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 415 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
416 | |
417 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
418 | |
419 | TRAILER is a character which can be found after the number; most | |
420 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 421 | static int |
fba45db2 | 422 | get_number_trailer (char **pp, int trailer) |
c906108c | 423 | { |
5c44784c | 424 | int retval = 0; /* default */ |
c906108c SS |
425 | char *p = *pp; |
426 | ||
427 | if (p == NULL) | |
428 | /* Empty line means refer to the last breakpoint. */ | |
429 | return breakpoint_count; | |
430 | else if (*p == '$') | |
431 | { | |
432 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 433 | to pass to lookup_internalvar(). */ |
c906108c SS |
434 | char *varname; |
435 | char *start = ++p; | |
278cd55f | 436 | struct value *val; |
c906108c SS |
437 | |
438 | while (isalnum (*p) || *p == '_') | |
439 | p++; | |
440 | varname = (char *) alloca (p - start + 1); | |
441 | strncpy (varname, start, p - start); | |
442 | varname[p - start] = '\0'; | |
443 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 444 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
445 | retval = (int) value_as_long (val); |
446 | else | |
447 | { | |
a3f17187 | 448 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
449 | retval = 0; |
450 | } | |
c906108c SS |
451 | } |
452 | else | |
453 | { | |
454 | if (*p == '-') | |
455 | ++p; | |
456 | while (*p >= '0' && *p <= '9') | |
457 | ++p; | |
458 | if (p == *pp) | |
459 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
460 | { |
461 | /* Skip non-numeric token */ | |
462 | while (*p && !isspace((int) *p)) | |
463 | ++p; | |
464 | /* Return zero, which caller must interpret as error. */ | |
465 | retval = 0; | |
466 | } | |
467 | else | |
468 | retval = atoi (*pp); | |
469 | } | |
470 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
471 | { | |
472 | /* Trailing junk: return 0 and let caller print error msg. */ | |
473 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
474 | ++p; | |
475 | retval = 0; | |
c906108c | 476 | } |
c906108c SS |
477 | while (isspace (*p)) |
478 | p++; | |
479 | *pp = p; | |
480 | return retval; | |
481 | } | |
5c44784c | 482 | |
11cf8741 | 483 | |
5c44784c JM |
484 | /* Like get_number_trailer, but don't allow a trailer. */ |
485 | int | |
fba45db2 | 486 | get_number (char **pp) |
5c44784c JM |
487 | { |
488 | return get_number_trailer (pp, '\0'); | |
489 | } | |
490 | ||
491 | /* Parse a number or a range. | |
492 | * A number will be of the form handled by get_number. | |
493 | * A range will be of the form <number1> - <number2>, and | |
494 | * will represent all the integers between number1 and number2, | |
495 | * inclusive. | |
496 | * | |
497 | * While processing a range, this fuction is called iteratively; | |
498 | * At each call it will return the next value in the range. | |
499 | * | |
500 | * At the beginning of parsing a range, the char pointer PP will | |
501 | * be advanced past <number1> and left pointing at the '-' token. | |
502 | * Subsequent calls will not advance the pointer until the range | |
503 | * is completed. The call that completes the range will advance | |
504 | * pointer PP past <number2>. | |
505 | */ | |
506 | ||
507 | int | |
fba45db2 | 508 | get_number_or_range (char **pp) |
5c44784c JM |
509 | { |
510 | static int last_retval, end_value; | |
511 | static char *end_ptr; | |
512 | static int in_range = 0; | |
513 | ||
514 | if (**pp != '-') | |
515 | { | |
516 | /* Default case: pp is pointing either to a solo number, | |
517 | or to the first number of a range. */ | |
518 | last_retval = get_number_trailer (pp, '-'); | |
519 | if (**pp == '-') | |
520 | { | |
521 | char **temp; | |
522 | ||
523 | /* This is the start of a range (<number1> - <number2>). | |
524 | Skip the '-', parse and remember the second number, | |
525 | and also remember the end of the final token. */ | |
526 | ||
527 | temp = &end_ptr; | |
528 | end_ptr = *pp + 1; | |
529 | while (isspace ((int) *end_ptr)) | |
530 | end_ptr++; /* skip white space */ | |
531 | end_value = get_number (temp); | |
532 | if (end_value < last_retval) | |
533 | { | |
8a3fe4f8 | 534 | error (_("inverted range")); |
5c44784c JM |
535 | } |
536 | else if (end_value == last_retval) | |
537 | { | |
538 | /* degenerate range (number1 == number2). Advance the | |
539 | token pointer so that the range will be treated as a | |
540 | single number. */ | |
541 | *pp = end_ptr; | |
542 | } | |
543 | else | |
544 | in_range = 1; | |
545 | } | |
546 | } | |
547 | else if (! in_range) | |
8a3fe4f8 | 548 | error (_("negative value")); |
5c44784c JM |
549 | else |
550 | { | |
551 | /* pp points to the '-' that betokens a range. All | |
552 | number-parsing has already been done. Return the next | |
553 | integer value (one greater than the saved previous value). | |
554 | Do not advance the token pointer 'pp' until the end of range | |
555 | is reached. */ | |
556 | ||
557 | if (++last_retval == end_value) | |
558 | { | |
559 | /* End of range reached; advance token pointer. */ | |
560 | *pp = end_ptr; | |
561 | in_range = 0; | |
562 | } | |
563 | } | |
564 | return last_retval; | |
565 | } | |
566 | ||
567 | ||
c906108c SS |
568 | \f |
569 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
570 | ||
571 | static void | |
fba45db2 | 572 | condition_command (char *arg, int from_tty) |
c906108c | 573 | { |
52f0bd74 | 574 | struct breakpoint *b; |
c906108c | 575 | char *p; |
52f0bd74 | 576 | int bnum; |
c906108c SS |
577 | |
578 | if (arg == 0) | |
e2e0b3e5 | 579 | error_no_arg (_("breakpoint number")); |
c906108c SS |
580 | |
581 | p = arg; | |
582 | bnum = get_number (&p); | |
5c44784c | 583 | if (bnum == 0) |
8a3fe4f8 | 584 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
585 | |
586 | ALL_BREAKPOINTS (b) | |
587 | if (b->number == bnum) | |
2f069f6f JB |
588 | { |
589 | struct bp_location *loc = b->loc; | |
590 | for (; loc; loc = loc->next) | |
591 | { | |
592 | if (loc->cond) | |
593 | { | |
594 | xfree (loc->cond); | |
595 | loc->cond = 0; | |
596 | } | |
597 | } | |
598 | if (b->cond_string != NULL) | |
599 | xfree (b->cond_string); | |
c906108c | 600 | |
2f069f6f JB |
601 | if (*p == 0) |
602 | { | |
603 | b->cond_string = NULL; | |
604 | if (from_tty) | |
605 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
606 | } | |
607 | else | |
608 | { | |
609 | arg = p; | |
610 | /* I don't know if it matters whether this is the string the user | |
611 | typed in or the decompiled expression. */ | |
612 | b->cond_string = savestring (arg, strlen (arg)); | |
613 | b->condition_not_parsed = 0; | |
614 | for (loc = b->loc; loc; loc = loc->next) | |
615 | { | |
616 | arg = p; | |
617 | loc->cond = | |
618 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
619 | if (*arg) | |
620 | error (_("Junk at end of expression")); | |
621 | } | |
622 | } | |
623 | breakpoints_changed (); | |
624 | breakpoint_modify_event (b->number); | |
625 | return; | |
626 | } | |
c906108c | 627 | |
8a3fe4f8 | 628 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
629 | } |
630 | ||
c906108c | 631 | static void |
fba45db2 | 632 | commands_command (char *arg, int from_tty) |
c906108c | 633 | { |
52f0bd74 | 634 | struct breakpoint *b; |
c906108c | 635 | char *p; |
52f0bd74 | 636 | int bnum; |
c906108c SS |
637 | struct command_line *l; |
638 | ||
639 | /* If we allowed this, we would have problems with when to | |
640 | free the storage, if we change the commands currently | |
641 | being read from. */ | |
642 | ||
643 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 644 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
645 | |
646 | p = arg; | |
647 | bnum = get_number (&p); | |
5c44784c | 648 | |
c906108c | 649 | if (p && *p) |
8a3fe4f8 | 650 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 651 | |
c906108c SS |
652 | ALL_BREAKPOINTS (b) |
653 | if (b->number == bnum) | |
9ebf4acf AC |
654 | { |
655 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
656 | bnum); | |
657 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
658 | l = read_command_lines (tmpbuf, from_tty); | |
659 | do_cleanups (cleanups); | |
660 | free_command_lines (&b->commands); | |
661 | b->commands = l; | |
662 | breakpoints_changed (); | |
663 | breakpoint_modify_event (b->number); | |
664 | return; | |
c5aa993b | 665 | } |
8a3fe4f8 | 666 | error (_("No breakpoint number %d."), bnum); |
c906108c | 667 | } |
40c03ae8 EZ |
668 | |
669 | /* Like commands_command, but instead of reading the commands from | |
670 | input stream, takes them from an already parsed command structure. | |
671 | ||
672 | This is used by cli-script.c to DTRT with breakpoint commands | |
673 | that are part of if and while bodies. */ | |
674 | enum command_control_type | |
675 | commands_from_control_command (char *arg, struct command_line *cmd) | |
676 | { | |
677 | struct breakpoint *b; | |
678 | char *p; | |
679 | int bnum; | |
680 | ||
681 | /* If we allowed this, we would have problems with when to | |
682 | free the storage, if we change the commands currently | |
683 | being read from. */ | |
684 | ||
685 | if (executing_breakpoint_commands) | |
686 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
687 | ||
688 | /* An empty string for the breakpoint number means the last | |
689 | breakpoint, but get_number expects a NULL pointer. */ | |
690 | if (arg && !*arg) | |
691 | p = NULL; | |
692 | else | |
693 | p = arg; | |
694 | bnum = get_number (&p); | |
695 | ||
696 | if (p && *p) | |
697 | error (_("Unexpected extra arguments following breakpoint number.")); | |
698 | ||
699 | ALL_BREAKPOINTS (b) | |
700 | if (b->number == bnum) | |
701 | { | |
702 | free_command_lines (&b->commands); | |
703 | if (cmd->body_count != 1) | |
704 | error (_("Invalid \"commands\" block structure.")); | |
705 | /* We need to copy the commands because if/while will free the | |
706 | list after it finishes execution. */ | |
707 | b->commands = copy_command_lines (cmd->body_list[0]); | |
708 | breakpoints_changed (); | |
709 | breakpoint_modify_event (b->number); | |
710 | return simple_control; | |
2f069f6f | 711 | } |
40c03ae8 EZ |
712 | error (_("No breakpoint number %d."), bnum); |
713 | } | |
c906108c | 714 | \f |
8defab1a DJ |
715 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
716 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 717 | |
8defab1a DJ |
718 | void |
719 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 720 | { |
8defab1a | 721 | struct bp_location *b; |
c906108c SS |
722 | CORE_ADDR bp_addr = 0; |
723 | int bp_size = 0; | |
8defab1a | 724 | int bptoffset = 0; |
c5aa993b | 725 | |
ffce0d52 | 726 | ALL_BP_LOCATIONS (b) |
c5aa993b | 727 | { |
ffce0d52 | 728 | if (b->owner->type == bp_none) |
8a3fe4f8 | 729 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
730 | b->owner->number); |
731 | ||
732 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 733 | continue; |
ffce0d52 | 734 | if (!b->inserted) |
c5aa993b JM |
735 | continue; |
736 | /* Addresses and length of the part of the breakpoint that | |
737 | we need to copy. */ | |
8181d85f DJ |
738 | bp_addr = b->target_info.placed_address; |
739 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 740 | if (bp_size == 0) |
8181d85f | 741 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 742 | continue; |
8defab1a | 743 | |
c5aa993b JM |
744 | if (bp_addr + bp_size <= memaddr) |
745 | /* The breakpoint is entirely before the chunk of memory we | |
746 | are reading. */ | |
747 | continue; | |
8defab1a | 748 | |
c5aa993b JM |
749 | if (bp_addr >= memaddr + len) |
750 | /* The breakpoint is entirely after the chunk of memory we are | |
751 | reading. */ | |
752 | continue; | |
c5aa993b | 753 | |
8defab1a DJ |
754 | /* Offset within shadow_contents. */ |
755 | if (bp_addr < memaddr) | |
756 | { | |
757 | /* Only copy the second part of the breakpoint. */ | |
758 | bp_size -= memaddr - bp_addr; | |
759 | bptoffset = memaddr - bp_addr; | |
760 | bp_addr = memaddr; | |
761 | } | |
c5aa993b | 762 | |
8defab1a DJ |
763 | if (bp_addr + bp_size > memaddr + len) |
764 | { | |
765 | /* Only copy the first part of the breakpoint. */ | |
766 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
767 | } | |
c5aa993b | 768 | |
8defab1a DJ |
769 | memcpy (buf + bp_addr - memaddr, |
770 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 771 | } |
c906108c | 772 | } |
c906108c | 773 | \f |
c5aa993b | 774 | |
687595f9 | 775 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 776 | static void |
687595f9 DJ |
777 | insert_catchpoint (struct ui_out *uo, void *args) |
778 | { | |
779 | struct breakpoint *b = (struct breakpoint *) args; | |
780 | int val = -1; | |
781 | ||
782 | switch (b->type) | |
783 | { | |
784 | case bp_catch_fork: | |
fa113d1a | 785 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
786 | break; |
787 | case bp_catch_vfork: | |
fa113d1a | 788 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
789 | break; |
790 | case bp_catch_exec: | |
fa113d1a | 791 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
792 | break; |
793 | default: | |
e2e0b3e5 | 794 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
795 | break; |
796 | } | |
687595f9 DJ |
797 | } |
798 | ||
a5606eee VP |
799 | static int |
800 | is_hardware_watchpoint (struct breakpoint *bpt) | |
801 | { | |
802 | return (bpt->type == bp_hardware_watchpoint | |
803 | || bpt->type == bp_read_watchpoint | |
804 | || bpt->type == bp_access_watchpoint); | |
805 | } | |
7270d8f2 | 806 | |
fa4727a6 DJ |
807 | /* Find the current value of a watchpoint on EXP. Return the value in |
808 | *VALP and *RESULTP and the chain of intermediate and final values | |
809 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
810 | not need them. | |
811 | ||
812 | If an error occurs while evaluating the expression, *RESULTP will | |
813 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
814 | not be read from memory. It is used to determine whether a value | |
815 | is user-specified (we should watch the whole value) or intermediate | |
816 | (we should watch only the bit used to locate the final value). | |
817 | ||
818 | If the final value, or any intermediate value, could not be read | |
819 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
820 | set to any referenced values. *VALP will never be a lazy value. | |
821 | This is the value which we store in struct breakpoint. | |
822 | ||
823 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
824 | value chain. The caller must free the values individually. If | |
825 | VAL_CHAIN is NULL, all generated values will be left on the value | |
826 | chain. */ | |
827 | ||
828 | static void | |
829 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
830 | struct value **resultp, struct value **val_chain) | |
831 | { | |
832 | struct value *mark, *new_mark, *result; | |
833 | ||
834 | *valp = NULL; | |
835 | if (resultp) | |
836 | *resultp = NULL; | |
837 | if (val_chain) | |
838 | *val_chain = NULL; | |
839 | ||
840 | /* Evaluate the expression. */ | |
841 | mark = value_mark (); | |
842 | result = NULL; | |
843 | gdb_evaluate_expression (exp, &result); | |
844 | new_mark = value_mark (); | |
845 | if (mark == new_mark) | |
846 | return; | |
847 | if (resultp) | |
848 | *resultp = result; | |
849 | ||
850 | /* Make sure it's not lazy, so that after the target stops again we | |
851 | have a non-lazy previous value to compare with. */ | |
852 | if (result != NULL | |
853 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
854 | *valp = result; | |
855 | ||
856 | if (val_chain) | |
857 | { | |
858 | /* Return the chain of intermediate values. We use this to | |
859 | decide which addresses to watch. */ | |
860 | *val_chain = new_mark; | |
861 | value_release_to_mark (mark); | |
862 | } | |
863 | } | |
864 | ||
865 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
866 | - Reparse watchpoint expression, is REPARSE is non-zero |
867 | - Evaluate expression and store the result in B->val | |
868 | - Update the list of values that must be watched in B->loc. | |
869 | ||
870 | If the watchpoint is disabled, do nothing. If this is | |
871 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 872 | static void |
a5606eee | 873 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 874 | { |
a5606eee | 875 | int within_current_scope; |
a5606eee VP |
876 | struct frame_id saved_frame_id; |
877 | struct bp_location *loc; | |
878 | bpstat bs; | |
879 | ||
74960c60 VP |
880 | /* We don't free locations. They are stored in |
881 | bp_location_chain and update_global_locations will | |
882 | eventually delete them and remove breakpoints if | |
883 | needed. */ | |
a5606eee VP |
884 | b->loc = NULL; |
885 | ||
886 | if (b->disposition == disp_del_at_next_stop) | |
887 | return; | |
888 | ||
889 | /* Save the current frame's ID so we can restore it after | |
890 | evaluating the watchpoint expression on its own frame. */ | |
891 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
892 | took a frame parameter, so that we didn't have to change the | |
893 | selected frame. */ | |
894 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
895 | ||
896 | /* Determine if the watchpoint is within scope. */ | |
897 | if (b->exp_valid_block == NULL) | |
898 | within_current_scope = 1; | |
899 | else | |
900 | { | |
901 | struct frame_info *fi; | |
902 | fi = frame_find_by_id (b->watchpoint_frame); | |
903 | within_current_scope = (fi != NULL); | |
904 | if (within_current_scope) | |
905 | select_frame (fi); | |
906 | } | |
907 | ||
908 | if (within_current_scope && reparse) | |
909 | { | |
910 | char *s; | |
911 | if (b->exp) | |
912 | { | |
913 | xfree (b->exp); | |
914 | b->exp = NULL; | |
915 | } | |
916 | s = b->exp_string; | |
917 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
918 | /* If the meaning of expression itself changed, the old value is | |
919 | no longer relevant. We don't want to report a watchpoint hit | |
920 | to the user when the old value and the new value may actually | |
921 | be completely different objects. */ | |
922 | value_free (b->val); | |
fa4727a6 DJ |
923 | b->val = NULL; |
924 | b->val_valid = 0; | |
a5606eee | 925 | } |
a5606eee VP |
926 | |
927 | /* If we failed to parse the expression, for example because | |
928 | it refers to a global variable in a not-yet-loaded shared library, | |
929 | don't try to insert watchpoint. We don't automatically delete | |
930 | such watchpoint, though, since failure to parse expression | |
931 | is different from out-of-scope watchpoint. */ | |
932 | if (within_current_scope && b->exp) | |
933 | { | |
fa4727a6 | 934 | struct value *val_chain, *v, *result, *next; |
a5606eee | 935 | |
fa4727a6 | 936 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 937 | |
a5606eee VP |
938 | /* Avoid setting b->val if it's already set. The meaning of |
939 | b->val is 'the last value' user saw, and we should update | |
940 | it only if we reported that last value to user. As it | |
941 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
942 | if (!b->val_valid) |
943 | { | |
944 | b->val = v; | |
945 | b->val_valid = 1; | |
946 | } | |
a5606eee VP |
947 | |
948 | /* Look at each value on the value chain. */ | |
fa4727a6 | 949 | for (v = val_chain; v; v = next) |
a5606eee VP |
950 | { |
951 | /* If it's a memory location, and GDB actually needed | |
952 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
953 | must watch it. If the first value returned is |
954 | still lazy, that means an error occurred reading it; | |
955 | watch it anyway in case it becomes readable. */ | |
a5606eee | 956 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 957 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
958 | { |
959 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 960 | |
a5606eee VP |
961 | /* We only watch structs and arrays if user asked |
962 | for it explicitly, never if they just happen to | |
963 | appear in the middle of some value chain. */ | |
fa4727a6 | 964 | if (v == result |
a5606eee VP |
965 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
966 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
967 | { | |
968 | CORE_ADDR addr; | |
969 | int len, type; | |
970 | struct bp_location *loc, **tmp; | |
971 | ||
972 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
973 | len = TYPE_LENGTH (value_type (v)); | |
974 | type = hw_write; | |
975 | if (b->type == bp_read_watchpoint) | |
976 | type = hw_read; | |
977 | else if (b->type == bp_access_watchpoint) | |
978 | type = hw_access; | |
979 | ||
980 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
981 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
982 | ; | |
983 | *tmp = loc; | |
984 | loc->address = addr; | |
985 | loc->length = len; | |
986 | loc->watchpoint_type = type; | |
987 | } | |
988 | } | |
989 | ||
990 | next = value_next (v); | |
991 | if (v != b->val) | |
992 | value_free (v); | |
993 | } | |
994 | ||
2ec93238 MK |
995 | /* We just regenerated the list of breakpoint locations. |
996 | The new location does not have its condition field set to anything | |
997 | and therefore, we must always reparse the cond_string, independently | |
998 | of the value of the reparse flag. */ | |
999 | if (b->cond_string != NULL) | |
a5606eee VP |
1000 | { |
1001 | char *s = b->cond_string; | |
a5606eee VP |
1002 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1003 | } | |
1004 | } | |
1005 | else if (!within_current_scope) | |
7270d8f2 | 1006 | { |
a5606eee VP |
1007 | printf_filtered (_("\ |
1008 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1009 | in which its expression is valid.\n"), | |
1010 | b->number); | |
1011 | if (b->related_breakpoint) | |
1012 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1013 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1014 | } |
a5606eee VP |
1015 | |
1016 | /* Restore the selected frame. */ | |
1017 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1018 | } |
1019 | ||
a5606eee | 1020 | |
74960c60 VP |
1021 | /* Returns 1 iff breakpoint location should be |
1022 | inserted in the inferior. */ | |
1023 | static int | |
1024 | should_be_inserted (struct bp_location *bpt) | |
1025 | { | |
1026 | if (!breakpoint_enabled (bpt->owner)) | |
1027 | return 0; | |
1028 | ||
1029 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1030 | return 0; | |
1031 | ||
1032 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1033 | return 0; | |
1034 | ||
1035 | return 1; | |
1036 | } | |
1037 | ||
879bfdc2 DJ |
1038 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1039 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1040 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1041 | ||
1042 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1043 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1044 | static int |
879bfdc2 | 1045 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1046 | struct ui_file *tmp_error_stream, |
1047 | int *disabled_breaks, int *process_warning, | |
1048 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1049 | { |
1050 | int val = 0; | |
1051 | ||
74960c60 | 1052 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1053 | return 0; |
1054 | ||
8181d85f DJ |
1055 | /* Initialize the target-specific information. */ |
1056 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1057 | bpt->target_info.placed_address = bpt->address; | |
1058 | ||
879bfdc2 DJ |
1059 | if (bpt->loc_type == bp_loc_software_breakpoint |
1060 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1061 | { | |
765dc015 VP |
1062 | if (bpt->owner->type != bp_hardware_breakpoint) |
1063 | { | |
1064 | /* If the explicitly specified breakpoint type | |
1065 | is not hardware breakpoint, check the memory map to see | |
1066 | if the breakpoint address is in read only memory or not. | |
1067 | Two important cases are: | |
1068 | - location type is not hardware breakpoint, memory | |
1069 | is readonly. We change the type of the location to | |
1070 | hardware breakpoint. | |
1071 | - location type is hardware breakpoint, memory is read-write. | |
1072 | This means we've previously made the location hardware one, but | |
1073 | then the memory map changed, so we undo. | |
1074 | ||
1075 | When breakpoints are removed, remove_breakpoints will | |
1076 | use location types we've just set here, the only possible | |
1077 | problem is that memory map has changed during running program, | |
1078 | but it's not going to work anyway with current gdb. */ | |
1079 | struct mem_region *mr | |
1080 | = lookup_mem_region (bpt->target_info.placed_address); | |
1081 | ||
1082 | if (mr) | |
1083 | { | |
1084 | if (automatic_hardware_breakpoints) | |
1085 | { | |
1086 | int changed = 0; | |
1087 | enum bp_loc_type new_type; | |
1088 | ||
1089 | if (mr->attrib.mode != MEM_RW) | |
1090 | new_type = bp_loc_hardware_breakpoint; | |
1091 | else | |
1092 | new_type = bp_loc_software_breakpoint; | |
1093 | ||
1094 | if (new_type != bpt->loc_type) | |
1095 | { | |
1096 | static int said = 0; | |
1097 | bpt->loc_type = new_type; | |
1098 | if (!said) | |
1099 | { | |
1100 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1101 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1102 | said = 1; |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1107 | && mr->attrib.mode != MEM_RW) | |
1108 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1109 | paddr (bpt->address)); | |
1110 | } | |
1111 | } | |
1112 | ||
879bfdc2 DJ |
1113 | /* First check to see if we have to handle an overlay. */ |
1114 | if (overlay_debugging == ovly_off | |
1115 | || bpt->section == NULL | |
1116 | || !(section_is_overlay (bpt->section))) | |
1117 | { | |
1118 | /* No overlay handling: just set the breakpoint. */ | |
1119 | ||
1120 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1121 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1122 | else |
8181d85f | 1123 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1124 | } |
1125 | else | |
1126 | { | |
1127 | /* This breakpoint is in an overlay section. | |
1128 | Shall we set a breakpoint at the LMA? */ | |
1129 | if (!overlay_events_enabled) | |
1130 | { | |
1131 | /* Yes -- overlay event support is not active, | |
1132 | so we must try to set a breakpoint at the LMA. | |
1133 | This will not work for a hardware breakpoint. */ | |
1134 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1135 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1136 | bpt->owner->number); |
1137 | else | |
1138 | { | |
1139 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1140 | bpt->section); | |
1141 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1142 | bpt->overlay_target_info = bpt->target_info; |
1143 | bpt->overlay_target_info.placed_address = addr; | |
1144 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1145 | if (val != 0) |
1146 | fprintf_unfiltered (tmp_error_stream, | |
1147 | "Overlay breakpoint %d failed: in ROM?", | |
1148 | bpt->owner->number); | |
1149 | } | |
1150 | } | |
1151 | /* Shall we set a breakpoint at the VMA? */ | |
1152 | if (section_is_mapped (bpt->section)) | |
1153 | { | |
1154 | /* Yes. This overlay section is mapped into memory. */ | |
1155 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1156 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1157 | else |
8181d85f | 1158 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1159 | } |
1160 | else | |
1161 | { | |
1162 | /* No. This breakpoint will not be inserted. | |
1163 | No error, but do not mark the bp as 'inserted'. */ | |
1164 | return 0; | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | if (val) | |
1169 | { | |
1170 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1171 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1172 | { |
1173 | /* See also: disable_breakpoints_in_shlibs. */ | |
1174 | val = 0; | |
0d381245 | 1175 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1176 | if (!*disabled_breaks) |
1177 | { | |
1178 | fprintf_unfiltered (tmp_error_stream, | |
1179 | "Cannot insert breakpoint %d.\n", | |
1180 | bpt->owner->number); | |
1181 | fprintf_unfiltered (tmp_error_stream, | |
1182 | "Temporarily disabling shared library breakpoints:\n"); | |
1183 | } | |
1184 | *disabled_breaks = 1; | |
1185 | fprintf_unfiltered (tmp_error_stream, | |
1186 | "breakpoint #%d\n", bpt->owner->number); | |
1187 | } | |
1188 | else | |
879bfdc2 DJ |
1189 | { |
1190 | #ifdef ONE_PROCESS_WRITETEXT | |
1191 | *process_warning = 1; | |
1192 | #endif | |
1193 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1194 | { | |
1195 | *hw_breakpoint_error = 1; | |
1196 | fprintf_unfiltered (tmp_error_stream, | |
1197 | "Cannot insert hardware breakpoint %d.\n", | |
1198 | bpt->owner->number); | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | fprintf_unfiltered (tmp_error_stream, | |
1203 | "Cannot insert breakpoint %d.\n", | |
1204 | bpt->owner->number); | |
1205 | fprintf_filtered (tmp_error_stream, | |
1206 | "Error accessing memory address "); | |
ed49a04f | 1207 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1208 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1209 | safe_strerror (val)); | |
1210 | } | |
1211 | ||
1212 | } | |
1213 | } | |
1214 | else | |
1215 | bpt->inserted = 1; | |
1216 | ||
1217 | return val; | |
1218 | } | |
1219 | ||
1220 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1221 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1222 | watchpoints. It's not clear that it's necessary... */ | |
1223 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1224 | { | |
a5606eee VP |
1225 | val = target_insert_watchpoint (bpt->address, |
1226 | bpt->length, | |
1227 | bpt->watchpoint_type); | |
1228 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1229 | } |
1230 | ||
879bfdc2 DJ |
1231 | else if (bpt->owner->type == bp_catch_fork |
1232 | || bpt->owner->type == bp_catch_vfork | |
1233 | || bpt->owner->type == bp_catch_exec) | |
1234 | { | |
71fff37b AC |
1235 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1236 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1237 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1238 | bpt->owner->number); | |
1239 | if (e.reason < 0) | |
879bfdc2 DJ |
1240 | bpt->owner->enable_state = bp_disabled; |
1241 | else | |
1242 | bpt->inserted = 1; | |
1640b821 DJ |
1243 | |
1244 | /* We've already printed an error message if there was a problem | |
1245 | inserting this catchpoint, and we've disabled the catchpoint, | |
1246 | so just return success. */ | |
1247 | return 0; | |
879bfdc2 DJ |
1248 | } |
1249 | ||
1250 | return 0; | |
1251 | } | |
1252 | ||
74960c60 VP |
1253 | /* Make sure all breakpoints are inserted in inferior. |
1254 | Throws exception on any error. | |
1255 | A breakpoint that is already inserted won't be inserted | |
1256 | again, so calling this function twice is safe. */ | |
1257 | void | |
1258 | insert_breakpoints (void) | |
1259 | { | |
1260 | struct breakpoint *bpt; | |
1261 | ||
1262 | ALL_BREAKPOINTS (bpt) | |
1263 | if (is_hardware_watchpoint (bpt)) | |
1264 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1265 | ||
1266 | update_global_location_list (); | |
1267 | ||
1268 | if (!always_inserted_mode && target_has_execution) | |
1269 | /* update_global_location_list does not insert breakpoints | |
1270 | when always_inserted_mode is not enabled. Explicitly | |
1271 | insert them now. */ | |
1272 | insert_breakpoint_locations (); | |
1273 | } | |
1274 | ||
c906108c SS |
1275 | /* insert_breakpoints is used when starting or continuing the program. |
1276 | remove_breakpoints is used when the program stops. | |
1277 | Both return zero if successful, | |
1278 | or an `errno' value if could not write the inferior. */ | |
1279 | ||
74960c60 VP |
1280 | static void |
1281 | insert_breakpoint_locations (void) | |
c906108c | 1282 | { |
a5606eee | 1283 | struct breakpoint *bpt; |
879bfdc2 | 1284 | struct bp_location *b, *temp; |
e236ba44 | 1285 | int error = 0; |
c906108c SS |
1286 | int val = 0; |
1287 | int disabled_breaks = 0; | |
81d0cc19 GS |
1288 | int hw_breakpoint_error = 0; |
1289 | int process_warning = 0; | |
c906108c | 1290 | |
81d0cc19 GS |
1291 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1292 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1293 | |
81d0cc19 GS |
1294 | /* Explicitly mark the warning -- this will only be printed if |
1295 | there was an error. */ | |
1296 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1297 | |
879bfdc2 DJ |
1298 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1299 | { | |
74960c60 | 1300 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1301 | continue; |
1302 | ||
f365de73 AS |
1303 | /* There is no point inserting thread-specific breakpoints if the |
1304 | thread no longer exists. */ | |
1305 | if (b->owner->thread != -1 | |
1306 | && !valid_thread_id (b->owner->thread)) | |
1307 | continue; | |
1308 | ||
879bfdc2 DJ |
1309 | val = insert_bp_location (b, tmp_error_stream, |
1310 | &disabled_breaks, &process_warning, | |
1311 | &hw_breakpoint_error); | |
1312 | if (val) | |
e236ba44 | 1313 | error = val; |
879bfdc2 | 1314 | } |
c906108c | 1315 | |
a5606eee VP |
1316 | /* If we failed to insert all locations of a watchpoint, |
1317 | remove them, as half-inserted watchpoint is of limited use. */ | |
1318 | ALL_BREAKPOINTS (bpt) | |
1319 | { | |
1320 | int some_failed = 0; | |
1321 | struct bp_location *loc; | |
1322 | ||
1323 | if (!is_hardware_watchpoint (bpt)) | |
1324 | continue; | |
1325 | ||
1326 | if (bpt->enable_state != bp_enabled) | |
1327 | continue; | |
74960c60 VP |
1328 | |
1329 | if (bpt->disposition == disp_del_at_next_stop) | |
1330 | continue; | |
a5606eee VP |
1331 | |
1332 | for (loc = bpt->loc; loc; loc = loc->next) | |
1333 | if (!loc->inserted) | |
1334 | { | |
1335 | some_failed = 1; | |
1336 | break; | |
1337 | } | |
1338 | if (some_failed) | |
1339 | { | |
1340 | for (loc = bpt->loc; loc; loc = loc->next) | |
1341 | if (loc->inserted) | |
1342 | remove_breakpoint (loc, mark_uninserted); | |
1343 | ||
1344 | hw_breakpoint_error = 1; | |
1345 | fprintf_unfiltered (tmp_error_stream, | |
1346 | "Could not insert hardware watchpoint %d.\n", | |
1347 | bpt->number); | |
1348 | error = -1; | |
1349 | } | |
1350 | } | |
1351 | ||
e236ba44 | 1352 | if (error) |
81d0cc19 GS |
1353 | { |
1354 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1355 | message about possibly exhausted resources. */ | |
879bfdc2 | 1356 | if (hw_breakpoint_error) |
81d0cc19 | 1357 | { |
c6510018 MS |
1358 | fprintf_unfiltered (tmp_error_stream, |
1359 | "Could not insert hardware breakpoints:\n\ | |
1360 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1361 | } |
c6510018 | 1362 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1363 | if (process_warning) |
c6510018 MS |
1364 | fprintf_unfiltered (tmp_error_stream, |
1365 | "The same program may be running in another process."); | |
1366 | #endif | |
81d0cc19 GS |
1367 | target_terminal_ours_for_output (); |
1368 | error_stream (tmp_error_stream); | |
1369 | } | |
c906108c SS |
1370 | } |
1371 | ||
c906108c | 1372 | int |
fba45db2 | 1373 | remove_breakpoints (void) |
c906108c | 1374 | { |
0bde7532 | 1375 | struct bp_location *b; |
c906108c SS |
1376 | int val; |
1377 | ||
0bde7532 | 1378 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1379 | { |
0bde7532 | 1380 | if (b->inserted) |
c5aa993b JM |
1381 | { |
1382 | val = remove_breakpoint (b, mark_uninserted); | |
1383 | if (val != 0) | |
1384 | return val; | |
1385 | } | |
1386 | } | |
c906108c SS |
1387 | return 0; |
1388 | } | |
1389 | ||
692590c1 | 1390 | int |
80ce1ecb | 1391 | remove_hw_watchpoints (void) |
692590c1 | 1392 | { |
0bde7532 | 1393 | struct bp_location *b; |
692590c1 MS |
1394 | int val; |
1395 | ||
0bde7532 | 1396 | ALL_BP_LOCATIONS (b) |
692590c1 | 1397 | { |
0bde7532 | 1398 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1399 | { |
1400 | val = remove_breakpoint (b, mark_uninserted); | |
1401 | if (val != 0) | |
1402 | return val; | |
1403 | } | |
1404 | } | |
1405 | return 0; | |
1406 | } | |
1407 | ||
c906108c | 1408 | int |
fba45db2 | 1409 | reattach_breakpoints (int pid) |
c906108c | 1410 | { |
0bde7532 | 1411 | struct bp_location *b; |
c906108c | 1412 | int val; |
ce696e05 | 1413 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1414 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1415 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1416 | ||
1417 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1418 | |
ce696e05 | 1419 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1420 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1421 | { |
0bde7532 | 1422 | if (b->inserted) |
c5aa993b | 1423 | { |
a4954f26 DJ |
1424 | b->inserted = 0; |
1425 | val = insert_bp_location (b, tmp_error_stream, | |
1426 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1427 | if (val != 0) |
1428 | { | |
ce696e05 | 1429 | do_cleanups (old_chain); |
c5aa993b JM |
1430 | return val; |
1431 | } | |
1432 | } | |
1433 | } | |
ce696e05 | 1434 | do_cleanups (old_chain); |
c906108c SS |
1435 | return 0; |
1436 | } | |
1437 | ||
74960c60 VP |
1438 | static void |
1439 | restore_always_inserted_mode (void *p) | |
1440 | { | |
1441 | always_inserted_mode = (uintptr_t) p; | |
1442 | } | |
1443 | ||
c906108c | 1444 | void |
fba45db2 | 1445 | update_breakpoints_after_exec (void) |
c906108c | 1446 | { |
c5aa993b JM |
1447 | struct breakpoint *b; |
1448 | struct breakpoint *temp; | |
74960c60 | 1449 | struct cleanup *cleanup; |
c906108c SS |
1450 | |
1451 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1452 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1453 | shadow is NOT valid after an exec()! */ | |
1454 | mark_breakpoints_out (); | |
1455 | ||
74960c60 VP |
1456 | /* The binary we used to debug is now gone, and we're updating |
1457 | breakpoints for the new binary. Until we're done, we should not | |
1458 | try to insert breakpoints. */ | |
1459 | cleanup = make_cleanup (restore_always_inserted_mode, | |
1460 | (void *) (uintptr_t) always_inserted_mode); | |
1461 | always_inserted_mode = 0; | |
1462 | ||
c906108c | 1463 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b JM |
1464 | { |
1465 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1466 | if (b->type == bp_shlib_event) | |
1467 | { | |
1468 | delete_breakpoint (b); | |
1469 | continue; | |
1470 | } | |
c906108c | 1471 | |
1900040c MS |
1472 | /* Thread event breakpoints must be set anew after an exec(), |
1473 | as must overlay event breakpoints. */ | |
1474 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1475 | { |
1476 | delete_breakpoint (b); | |
1477 | continue; | |
1478 | } | |
1479 | ||
c5aa993b JM |
1480 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1481 | if (b->type == bp_step_resume) | |
1482 | { | |
1483 | delete_breakpoint (b); | |
1484 | continue; | |
1485 | } | |
1486 | ||
611c83ae PA |
1487 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1488 | after an exec. */ | |
1489 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1490 | { | |
1491 | delete_breakpoint (b); | |
1492 | continue; | |
1493 | } | |
1494 | ||
c5aa993b JM |
1495 | /* Don't delete an exec catchpoint, because else the inferior |
1496 | won't stop when it ought! | |
1497 | ||
1498 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1499 | on this target, we may not be able to stop when the vfork is |
1500 | seen, but only when the subsequent exec is seen. (And because | |
1501 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1502 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1503 | if ((b->type == bp_catch_exec) || |
1504 | (b->type == bp_catch_vfork) || | |
1505 | (b->type == bp_catch_fork)) | |
1506 | { | |
c5aa993b JM |
1507 | continue; |
1508 | } | |
1509 | ||
1510 | /* bp_finish is a special case. The only way we ought to be able | |
1511 | to see one of these when an exec() has happened, is if the user | |
1512 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1513 | carries them to the call-site of the current callee, by setting | |
1514 | a temporary bp there and resuming. But in this case, the finish | |
1515 | will carry them entirely through the vfork & exec. | |
1516 | ||
1517 | We don't want to allow a bp_finish to remain inserted now. But | |
1518 | we can't safely delete it, 'cause finish_command has a handle to | |
1519 | the bp on a bpstat, and will later want to delete it. There's a | |
1520 | chance (and I've seen it happen) that if we delete the bp_finish | |
1521 | here, that its storage will get reused by the time finish_command | |
1522 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1523 | We really must allow finish_command to delete a bp_finish. | |
1524 | ||
53a5351d JM |
1525 | In the absense of a general solution for the "how do we know |
1526 | it's safe to delete something others may have handles to?" | |
1527 | problem, what we'll do here is just uninsert the bp_finish, and | |
1528 | let finish_command delete it. | |
1529 | ||
1530 | (We know the bp_finish is "doomed" in the sense that it's | |
1531 | momentary, and will be deleted as soon as finish_command sees | |
1532 | the inferior stopped. So it doesn't matter that the bp's | |
1533 | address is probably bogus in the new a.out, unlike e.g., the | |
1534 | solib breakpoints.) */ | |
c5aa993b | 1535 | |
c5aa993b JM |
1536 | if (b->type == bp_finish) |
1537 | { | |
1538 | continue; | |
1539 | } | |
1540 | ||
1541 | /* Without a symbolic address, we have little hope of the | |
1542 | pre-exec() address meaning the same thing in the post-exec() | |
1543 | a.out. */ | |
1544 | if (b->addr_string == NULL) | |
1545 | { | |
1546 | delete_breakpoint (b); | |
1547 | continue; | |
1548 | } | |
c5aa993b | 1549 | } |
1900040c MS |
1550 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1551 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
74960c60 | 1552 | do_cleanups (cleanup); |
c906108c SS |
1553 | } |
1554 | ||
1555 | int | |
fba45db2 | 1556 | detach_breakpoints (int pid) |
c906108c | 1557 | { |
0bde7532 | 1558 | struct bp_location *b; |
c906108c | 1559 | int val; |
ce696e05 | 1560 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1561 | |
39f77062 | 1562 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1563 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1564 | |
ce696e05 KB |
1565 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1566 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1567 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1568 | { |
0bde7532 | 1569 | if (b->inserted) |
c5aa993b JM |
1570 | { |
1571 | val = remove_breakpoint (b, mark_inserted); | |
1572 | if (val != 0) | |
1573 | { | |
ce696e05 | 1574 | do_cleanups (old_chain); |
c5aa993b JM |
1575 | return val; |
1576 | } | |
1577 | } | |
1578 | } | |
ce696e05 | 1579 | do_cleanups (old_chain); |
c906108c SS |
1580 | return 0; |
1581 | } | |
1582 | ||
1583 | static int | |
0bde7532 | 1584 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1585 | { |
1586 | int val; | |
c5aa993b | 1587 | |
0bde7532 | 1588 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1589 | /* Permanent breakpoints cannot be inserted or removed. */ |
1590 | return 0; | |
1591 | ||
74960c60 VP |
1592 | /* The type of none suggests that owner is actually deleted. |
1593 | This should not ever happen. */ | |
1594 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1595 | |
1596 | if (b->loc_type == bp_loc_software_breakpoint | |
1597 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1598 | { |
c02f5703 MS |
1599 | /* "Normal" instruction breakpoint: either the standard |
1600 | trap-instruction bp (bp_breakpoint), or a | |
1601 | bp_hardware_breakpoint. */ | |
1602 | ||
1603 | /* First check to see if we have to handle an overlay. */ | |
1604 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1605 | || b->section == NULL |
1606 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1607 | { |
1608 | /* No overlay handling: just remove the breakpoint. */ | |
1609 | ||
0bde7532 | 1610 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1611 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1612 | else |
8181d85f | 1613 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1614 | } |
c906108c SS |
1615 | else |
1616 | { | |
c02f5703 MS |
1617 | /* This breakpoint is in an overlay section. |
1618 | Did we set a breakpoint at the LMA? */ | |
1619 | if (!overlay_events_enabled) | |
1620 | { | |
1621 | /* Yes -- overlay event support is not active, so we | |
1622 | should have set a breakpoint at the LMA. Remove it. | |
1623 | */ | |
c02f5703 MS |
1624 | /* Ignore any failures: if the LMA is in ROM, we will |
1625 | have already warned when we failed to insert it. */ | |
0bde7532 | 1626 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1627 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1628 | else |
8181d85f | 1629 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1630 | } |
1631 | /* Did we set a breakpoint at the VMA? | |
1632 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1633 | if (b->inserted) |
c906108c | 1634 | { |
c02f5703 MS |
1635 | /* Yes -- remove it. Previously we did not bother to |
1636 | remove the breakpoint if the section had been | |
1637 | unmapped, but let's not rely on that being safe. We | |
1638 | don't know what the overlay manager might do. */ | |
0bde7532 | 1639 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1640 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1641 | |
1642 | /* However, we should remove *software* breakpoints only | |
1643 | if the section is still mapped, or else we overwrite | |
1644 | wrong code with the saved shadow contents. */ | |
1645 | else if (section_is_mapped (b->section)) | |
8181d85f | 1646 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1647 | else |
1648 | val = 0; | |
c906108c | 1649 | } |
c02f5703 MS |
1650 | else |
1651 | { | |
1652 | /* No -- not inserted, so no need to remove. No error. */ | |
1653 | val = 0; | |
1654 | } | |
c906108c SS |
1655 | } |
1656 | if (val) | |
1657 | return val; | |
0bde7532 | 1658 | b->inserted = (is == mark_inserted); |
c906108c | 1659 | } |
a5606eee | 1660 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1661 | { |
278cd55f AC |
1662 | struct value *v; |
1663 | struct value *n; | |
c5aa993b | 1664 | |
0bde7532 | 1665 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1666 | val = target_remove_watchpoint (b->address, b->length, |
1667 | b->watchpoint_type); | |
2e70b7b9 | 1668 | |
c906108c | 1669 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1670 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1671 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1672 | b->owner->number); |
c906108c | 1673 | } |
0bde7532 DJ |
1674 | else if ((b->owner->type == bp_catch_fork || |
1675 | b->owner->type == bp_catch_vfork || | |
1676 | b->owner->type == bp_catch_exec) | |
468d015d | 1677 | && breakpoint_enabled (b->owner) |
0bde7532 | 1678 | && !b->duplicate) |
c906108c SS |
1679 | { |
1680 | val = -1; | |
0bde7532 | 1681 | switch (b->owner->type) |
c5aa993b JM |
1682 | { |
1683 | case bp_catch_fork: | |
39f77062 | 1684 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1685 | break; |
1686 | case bp_catch_vfork: | |
39f77062 | 1687 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1688 | break; |
1689 | case bp_catch_exec: | |
39f77062 | 1690 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1691 | break; |
ac9a91a7 | 1692 | default: |
8a3fe4f8 | 1693 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1694 | break; |
c5aa993b | 1695 | } |
c906108c SS |
1696 | if (val) |
1697 | return val; | |
0bde7532 | 1698 | b->inserted = (is == mark_inserted); |
c906108c | 1699 | } |
c906108c SS |
1700 | |
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | /* Clear the "inserted" flag in all breakpoints. */ | |
1705 | ||
55a3f01f | 1706 | static void |
fba45db2 | 1707 | mark_breakpoints_out (void) |
c906108c | 1708 | { |
075f6582 | 1709 | struct bp_location *bpt; |
c906108c | 1710 | |
075f6582 DJ |
1711 | ALL_BP_LOCATIONS (bpt) |
1712 | bpt->inserted = 0; | |
c906108c SS |
1713 | } |
1714 | ||
53a5351d JM |
1715 | /* Clear the "inserted" flag in all breakpoints and delete any |
1716 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1717 | |
1718 | Plus other such housekeeping that has to be done for breakpoints | |
1719 | between runs. | |
1720 | ||
53a5351d JM |
1721 | Note: this function gets called at the end of a run (by |
1722 | generic_mourn_inferior) and when a run begins (by | |
1723 | init_wait_for_inferior). */ | |
c906108c SS |
1724 | |
1725 | ||
1726 | ||
1727 | void | |
fba45db2 | 1728 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1729 | { |
52f0bd74 | 1730 | struct breakpoint *b, *temp; |
075f6582 | 1731 | struct bp_location *bpt; |
c906108c | 1732 | |
075f6582 DJ |
1733 | ALL_BP_LOCATIONS (bpt) |
1734 | bpt->inserted = 0; | |
1735 | ||
c906108c | 1736 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1737 | { |
c5aa993b JM |
1738 | switch (b->type) |
1739 | { | |
1740 | case bp_call_dummy: | |
1741 | case bp_watchpoint_scope: | |
c906108c | 1742 | |
c5aa993b JM |
1743 | /* If the call dummy breakpoint is at the entry point it will |
1744 | cause problems when the inferior is rerun, so we better | |
1745 | get rid of it. | |
c906108c | 1746 | |
c5aa993b JM |
1747 | Also get rid of scope breakpoints. */ |
1748 | delete_breakpoint (b); | |
1749 | break; | |
c906108c | 1750 | |
c5aa993b JM |
1751 | case bp_watchpoint: |
1752 | case bp_hardware_watchpoint: | |
1753 | case bp_read_watchpoint: | |
1754 | case bp_access_watchpoint: | |
c906108c | 1755 | |
c5aa993b JM |
1756 | /* Likewise for watchpoints on local expressions. */ |
1757 | if (b->exp_valid_block != NULL) | |
1758 | delete_breakpoint (b); | |
967af18d | 1759 | else if (context == inf_starting) |
c860120c PM |
1760 | { |
1761 | /* Reset val field to force reread of starting value | |
1762 | in insert_breakpoints. */ | |
1763 | if (b->val) | |
1764 | value_free (b->val); | |
1765 | b->val = NULL; | |
fa4727a6 | 1766 | b->val_valid = 0; |
c860120c | 1767 | } |
c5aa993b JM |
1768 | break; |
1769 | default: | |
c5aa993b JM |
1770 | break; |
1771 | } | |
1772 | } | |
c906108c SS |
1773 | } |
1774 | ||
c2c6d25f JM |
1775 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1776 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1777 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1778 | permanent breakpoint. | |
1779 | - When continuing from a location with an ordinary breakpoint, we | |
1780 | actually single step once before calling insert_breakpoints. | |
1781 | - When continuing from a localion with a permanent breakpoint, we | |
1782 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1783 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1784 | |
c2c6d25f | 1785 | enum breakpoint_here |
fba45db2 | 1786 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1787 | { |
89f9893c | 1788 | const struct bp_location *bpt; |
c2c6d25f | 1789 | int any_breakpoint_here = 0; |
c906108c | 1790 | |
075f6582 DJ |
1791 | ALL_BP_LOCATIONS (bpt) |
1792 | { | |
1793 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1794 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1795 | continue; | |
1796 | ||
468d015d | 1797 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1798 | || bpt->owner->enable_state == bp_permanent) |
1799 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1800 | { | |
1801 | if (overlay_debugging | |
1802 | && section_is_overlay (bpt->section) | |
1803 | && !section_is_mapped (bpt->section)) | |
1804 | continue; /* unmapped overlay -- can't be a match */ | |
1805 | else if (bpt->owner->enable_state == bp_permanent) | |
1806 | return permanent_breakpoint_here; | |
1807 | else | |
1808 | any_breakpoint_here = 1; | |
1809 | } | |
1810 | } | |
c906108c | 1811 | |
c2c6d25f | 1812 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1813 | } |
1814 | ||
c2c6d25f | 1815 | |
c36b740a VP |
1816 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1817 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1818 | This does not check for single-step breakpoints, which are | |
1819 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1820 | |
1821 | int | |
c36b740a | 1822 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1823 | { |
89f9893c | 1824 | const struct bp_location *bpt; |
c906108c | 1825 | |
075f6582 | 1826 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1827 | { |
075f6582 DJ |
1828 | if (bpt->loc_type != bp_loc_software_breakpoint |
1829 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1830 | continue; | |
1831 | ||
1832 | if (bpt->inserted | |
1833 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1834 | { | |
1835 | if (overlay_debugging | |
1836 | && section_is_overlay (bpt->section) | |
1837 | && !section_is_mapped (bpt->section)) | |
1838 | continue; /* unmapped overlay -- can't be a match */ | |
1839 | else | |
1840 | return 1; | |
1841 | } | |
c5aa993b | 1842 | } |
c36b740a VP |
1843 | return 0; |
1844 | } | |
1845 | ||
1846 | /* Returns non-zero iff there's either regular breakpoint | |
1847 | or a single step breakpoint inserted at PC. */ | |
1848 | ||
1849 | int | |
1850 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1851 | { | |
1852 | if (regular_breakpoint_inserted_here_p (pc)) | |
1853 | return 1; | |
c906108c | 1854 | |
1aafd4da UW |
1855 | if (single_step_breakpoint_inserted_here_p (pc)) |
1856 | return 1; | |
1857 | ||
c906108c SS |
1858 | return 0; |
1859 | } | |
1860 | ||
4fa8626c DJ |
1861 | /* This function returns non-zero iff there is a software breakpoint |
1862 | inserted at PC. */ | |
1863 | ||
1864 | int | |
1865 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1866 | { | |
89f9893c | 1867 | const struct bp_location *bpt; |
4fa8626c DJ |
1868 | int any_breakpoint_here = 0; |
1869 | ||
1870 | ALL_BP_LOCATIONS (bpt) | |
1871 | { | |
1872 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1873 | continue; | |
1874 | ||
0d381245 | 1875 | if (bpt->inserted |
4fa8626c DJ |
1876 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1877 | { | |
1878 | if (overlay_debugging | |
1879 | && section_is_overlay (bpt->section) | |
1880 | && !section_is_mapped (bpt->section)) | |
1881 | continue; /* unmapped overlay -- can't be a match */ | |
1882 | else | |
1883 | return 1; | |
1884 | } | |
1885 | } | |
1886 | ||
1aafd4da UW |
1887 | /* Also check for software single-step breakpoints. */ |
1888 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1889 | return 1; | |
1890 | ||
4fa8626c DJ |
1891 | return 0; |
1892 | } | |
1893 | ||
075f6582 DJ |
1894 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1895 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1896 | |
1897 | int | |
39f77062 | 1898 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1899 | { |
89f9893c | 1900 | const struct bp_location *bpt; |
c906108c SS |
1901 | int thread; |
1902 | ||
39f77062 | 1903 | thread = pid_to_thread_id (ptid); |
c906108c | 1904 | |
075f6582 | 1905 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1906 | { |
075f6582 DJ |
1907 | if (bpt->loc_type != bp_loc_software_breakpoint |
1908 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1909 | continue; | |
1910 | ||
468d015d | 1911 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1912 | || bpt->owner->enable_state == bp_permanent) |
1913 | && bpt->address == pc | |
1914 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1915 | { | |
1916 | if (overlay_debugging | |
1917 | && section_is_overlay (bpt->section) | |
1918 | && !section_is_mapped (bpt->section)) | |
1919 | continue; /* unmapped overlay -- can't be a match */ | |
1920 | else | |
1921 | return 1; | |
1922 | } | |
c5aa993b | 1923 | } |
c906108c SS |
1924 | |
1925 | return 0; | |
1926 | } | |
c906108c | 1927 | \f |
c5aa993b | 1928 | |
c906108c SS |
1929 | /* bpstat stuff. External routines' interfaces are documented |
1930 | in breakpoint.h. */ | |
1931 | ||
1932 | int | |
fba45db2 | 1933 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1934 | { |
1935 | return | |
1936 | (ep->type == bp_catch_load) | |
1937 | || (ep->type == bp_catch_unload) | |
1938 | || (ep->type == bp_catch_fork) | |
1939 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1940 | || (ep->type == bp_catch_exec); |
c906108c | 1941 | |
c5aa993b | 1942 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1943 | } |
c5aa993b | 1944 | |
c906108c | 1945 | int |
fba45db2 | 1946 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1947 | { |
1948 | return | |
1949 | (ep->type == bp_catch_load) | |
d85310f7 | 1950 | || (ep->type == bp_catch_unload); |
c906108c SS |
1951 | } |
1952 | ||
198757a8 VP |
1953 | void |
1954 | bpstat_free (bpstat bs) | |
1955 | { | |
1956 | if (bs->old_val != NULL) | |
1957 | value_free (bs->old_val); | |
1958 | free_command_lines (&bs->commands); | |
1959 | xfree (bs); | |
1960 | } | |
1961 | ||
c906108c SS |
1962 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1963 | Also free any storage that is part of a bpstat. */ | |
1964 | ||
1965 | void | |
fba45db2 | 1966 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1967 | { |
1968 | bpstat p; | |
1969 | bpstat q; | |
1970 | ||
1971 | if (bsp == 0) | |
1972 | return; | |
1973 | p = *bsp; | |
1974 | while (p != NULL) | |
1975 | { | |
1976 | q = p->next; | |
198757a8 | 1977 | bpstat_free (p); |
c906108c SS |
1978 | p = q; |
1979 | } | |
1980 | *bsp = NULL; | |
1981 | } | |
1982 | ||
1983 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1984 | is part of the bpstat is copied as well. */ | |
1985 | ||
1986 | bpstat | |
fba45db2 | 1987 | bpstat_copy (bpstat bs) |
c906108c SS |
1988 | { |
1989 | bpstat p = NULL; | |
1990 | bpstat tmp; | |
1991 | bpstat retval = NULL; | |
1992 | ||
1993 | if (bs == NULL) | |
1994 | return bs; | |
1995 | ||
1996 | for (; bs != NULL; bs = bs->next) | |
1997 | { | |
1998 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1999 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2000 | if (bs->commands != NULL) |
2001 | tmp->commands = copy_command_lines (bs->commands); | |
2002 | if (bs->old_val != NULL) | |
2003 | tmp->old_val = value_copy (bs->old_val); | |
2004 | ||
c906108c SS |
2005 | if (p == NULL) |
2006 | /* This is the first thing in the chain. */ | |
2007 | retval = tmp; | |
2008 | else | |
2009 | p->next = tmp; | |
2010 | p = tmp; | |
2011 | } | |
2012 | p->next = NULL; | |
2013 | return retval; | |
2014 | } | |
2015 | ||
2016 | /* Find the bpstat associated with this breakpoint */ | |
2017 | ||
2018 | bpstat | |
fba45db2 | 2019 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2020 | { |
c5aa993b JM |
2021 | if (bsp == NULL) |
2022 | return NULL; | |
c906108c | 2023 | |
c5aa993b JM |
2024 | for (; bsp != NULL; bsp = bsp->next) |
2025 | { | |
4f8d1dc6 | 2026 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2027 | return bsp; |
2028 | } | |
c906108c SS |
2029 | return NULL; |
2030 | } | |
2031 | ||
2032 | /* Find a step_resume breakpoint associated with this bpstat. | |
2033 | (If there are multiple step_resume bp's on the list, this function | |
2034 | will arbitrarily pick one.) | |
2035 | ||
2036 | It is an error to use this function if BPSTAT doesn't contain a | |
2037 | step_resume breakpoint. | |
2038 | ||
2039 | See wait_for_inferior's use of this function. */ | |
2040 | struct breakpoint * | |
fba45db2 | 2041 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2042 | { |
8601f500 MS |
2043 | int current_thread; |
2044 | ||
8a3fe4f8 | 2045 | gdb_assert (bsp != NULL); |
c906108c | 2046 | |
8601f500 MS |
2047 | current_thread = pid_to_thread_id (inferior_ptid); |
2048 | ||
c906108c SS |
2049 | for (; bsp != NULL; bsp = bsp->next) |
2050 | { | |
2051 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2052 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2053 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2054 | bsp->breakpoint_at->owner->thread == -1)) | |
2055 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2056 | } |
2057 | ||
8a3fe4f8 | 2058 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2059 | } |
2060 | ||
2061 | ||
8671a17b | 2062 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2063 | at. *BSP upon return is a bpstat which points to the remaining |
2064 | breakpoints stopped at (but which is not guaranteed to be good for | |
2065 | anything but further calls to bpstat_num). | |
8671a17b PA |
2066 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2067 | Return -1 if stopped at a breakpoint that has been deleted since | |
2068 | we set it. | |
2069 | Return 1 otherwise. */ | |
c906108c SS |
2070 | |
2071 | int | |
8671a17b | 2072 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2073 | { |
2074 | struct breakpoint *b; | |
2075 | ||
2076 | if ((*bsp) == NULL) | |
2077 | return 0; /* No more breakpoint values */ | |
8671a17b | 2078 | |
4f8d1dc6 VP |
2079 | /* We assume we'll never have several bpstats that |
2080 | correspond to a single breakpoint -- otherwise, | |
2081 | this function might return the same number more | |
2082 | than once and this will look ugly. */ | |
2083 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2084 | *bsp = (*bsp)->next; |
2085 | if (b == NULL) | |
2086 | return -1; /* breakpoint that's been deleted since */ | |
2087 | ||
2088 | *num = b->number; /* We have its number */ | |
2089 | return 1; | |
c906108c SS |
2090 | } |
2091 | ||
2092 | /* Modify BS so that the actions will not be performed. */ | |
2093 | ||
2094 | void | |
fba45db2 | 2095 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2096 | { |
2097 | for (; bs != NULL; bs = bs->next) | |
2098 | { | |
c2b8ed2c | 2099 | free_command_lines (&bs->commands); |
c906108c SS |
2100 | if (bs->old_val != NULL) |
2101 | { | |
2102 | value_free (bs->old_val); | |
2103 | bs->old_val = NULL; | |
2104 | } | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2109 | static void |
4efb68b1 | 2110 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2111 | { |
2112 | executing_breakpoint_commands = 0; | |
2113 | } | |
2114 | ||
2115 | /* Execute all the commands associated with all the breakpoints at this | |
2116 | location. Any of these commands could cause the process to proceed | |
2117 | beyond this point, etc. We look out for such changes by checking | |
2118 | the global "breakpoint_proceeded" after each command. */ | |
2119 | ||
2120 | void | |
fba45db2 | 2121 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2122 | { |
2123 | bpstat bs; | |
2124 | struct cleanup *old_chain; | |
c906108c SS |
2125 | |
2126 | /* Avoid endless recursion if a `source' command is contained | |
2127 | in bs->commands. */ | |
2128 | if (executing_breakpoint_commands) | |
2129 | return; | |
2130 | ||
2131 | executing_breakpoint_commands = 1; | |
2132 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2133 | ||
2134 | top: | |
2135 | /* Note that (as of this writing), our callers all appear to | |
2136 | be passing us the address of global stop_bpstat. And, if | |
2137 | our calls to execute_control_command cause the inferior to | |
2138 | proceed, that global (and hence, *bsp) will change. | |
2139 | ||
2140 | We must be careful to not touch *bsp unless the inferior | |
2141 | has not proceeded. */ | |
2142 | ||
2143 | /* This pointer will iterate over the list of bpstat's. */ | |
2144 | bs = *bsp; | |
2145 | ||
2146 | breakpoint_proceeded = 0; | |
2147 | for (; bs != NULL; bs = bs->next) | |
2148 | { | |
6c50ab1c JB |
2149 | struct command_line *cmd; |
2150 | struct cleanup *this_cmd_tree_chain; | |
2151 | ||
2152 | /* Take ownership of the BSP's command tree, if it has one. | |
2153 | ||
2154 | The command tree could legitimately contain commands like | |
2155 | 'step' and 'next', which call clear_proceed_status, which | |
2156 | frees stop_bpstat's command tree. To make sure this doesn't | |
2157 | free the tree we're executing out from under us, we need to | |
2158 | take ownership of the tree ourselves. Since a given bpstat's | |
2159 | commands are only executed once, we don't need to copy it; we | |
2160 | can clear the pointer in the bpstat, and make sure we free | |
2161 | the tree when we're done. */ | |
c906108c | 2162 | cmd = bs->commands; |
6c50ab1c JB |
2163 | bs->commands = 0; |
2164 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2165 | ||
c906108c SS |
2166 | while (cmd != NULL) |
2167 | { | |
2168 | execute_control_command (cmd); | |
2169 | ||
2170 | if (breakpoint_proceeded) | |
2171 | break; | |
2172 | else | |
2173 | cmd = cmd->next; | |
2174 | } | |
6c50ab1c JB |
2175 | |
2176 | /* We can free this command tree now. */ | |
2177 | do_cleanups (this_cmd_tree_chain); | |
2178 | ||
c906108c | 2179 | if (breakpoint_proceeded) |
32c1e744 VP |
2180 | { |
2181 | if (target_can_async_p ()) | |
2182 | /* If we are in async mode, then the target might | |
2183 | be still running, not stopped at any breakpoint, | |
2184 | so nothing for us to do here -- just return to | |
2185 | the event loop. */ | |
2186 | break; | |
2187 | else | |
2188 | /* In sync mode, when execute_control_command returns | |
2189 | we're already standing on the next breakpoint. | |
2190 | Breakpoint commands for that stop were not run, | |
2191 | since execute_command does not run breakpoint | |
2192 | commands -- only command_line_handler does, but | |
2193 | that one is not involved in execution of breakpoint | |
2194 | commands. So, we can now execute breakpoint commands. | |
2195 | There's an implicit assumption that we're called with | |
2196 | stop_bpstat, so our parameter is the new bpstat to | |
2197 | handle. | |
2198 | It should be noted that making execute_command do | |
2199 | bpstat actions is not an option -- in this case we'll | |
2200 | have recursive invocation of bpstat for each breakpoint | |
2201 | with a command, and can easily blow up GDB stack. */ | |
2202 | goto top; | |
2203 | } | |
c906108c | 2204 | } |
c2b8ed2c | 2205 | do_cleanups (old_chain); |
c906108c SS |
2206 | } |
2207 | ||
fa4727a6 DJ |
2208 | /* Print out the (old or new) value associated with a watchpoint. */ |
2209 | ||
2210 | static void | |
2211 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2212 | { | |
2213 | if (val == NULL) | |
2214 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2215 | else | |
2216 | value_print (val, stream, 0, Val_pretty_default); | |
2217 | } | |
2218 | ||
e514a9d6 | 2219 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2220 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2221 | by having it set different print_it values. |
2222 | ||
2223 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2224 | through the bpstat list of things causing this stop, calling the | |
2225 | print_bp_stop_message function on each one. The behavior of the | |
2226 | print_bp_stop_message function depends on the print_it field of | |
2227 | bpstat. If such field so indicates, call this function here. | |
2228 | ||
2229 | Return values from this routine (ultimately used by bpstat_print() | |
2230 | and normal_stop() to decide what to do): | |
2231 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2232 | don't print anything else. | |
2233 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2234 | that something to be followed by a location. | |
2235 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2236 | that something to be followed by a location. | |
2237 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2238 | analysis. */ | |
c906108c | 2239 | |
917317f4 | 2240 | static enum print_stop_action |
fba45db2 | 2241 | print_it_typical (bpstat bs) |
c906108c | 2242 | { |
3b31d625 | 2243 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2244 | struct breakpoint *b; |
89f9893c | 2245 | const struct bp_location *bl; |
8b93c638 | 2246 | struct ui_stream *stb; |
2cec12e5 | 2247 | int bp_temp = 0; |
8b93c638 | 2248 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2249 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2250 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2251 | which has since been deleted. */ | |
e514a9d6 | 2252 | if (bs->breakpoint_at == NULL) |
917317f4 | 2253 | return PRINT_UNKNOWN; |
0d381245 VP |
2254 | bl = bs->breakpoint_at; |
2255 | b = bl->owner; | |
c906108c | 2256 | |
4f8d1dc6 | 2257 | switch (b->type) |
c906108c | 2258 | { |
e514a9d6 JM |
2259 | case bp_breakpoint: |
2260 | case bp_hardware_breakpoint: | |
2cec12e5 | 2261 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2262 | if (bl->address != bl->requested_address) |
2263 | breakpoint_adjustment_warning (bl->requested_address, | |
2264 | bl->address, | |
4f8d1dc6 VP |
2265 | b->number, 1); |
2266 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2267 | if (bp_temp) |
2268 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2269 | else | |
2270 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2271 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2272 | { |
2273 | ui_out_field_string (uiout, "reason", | |
2274 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2275 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2276 | } | |
4f8d1dc6 | 2277 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2278 | ui_out_text (uiout, ", "); |
2279 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2280 | break; |
2281 | ||
2282 | case bp_shlib_event: | |
917317f4 JM |
2283 | /* Did we stop because the user set the stop_on_solib_events |
2284 | variable? (If so, we report this as a generic, "Stopped due | |
2285 | to shlib event" message.) */ | |
a3f17187 | 2286 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2287 | return PRINT_NOTHING; |
2288 | break; | |
2289 | ||
c4093a6a JM |
2290 | case bp_thread_event: |
2291 | /* Not sure how we will get here. | |
2292 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2293 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2294 | return PRINT_NOTHING; |
2295 | break; | |
2296 | ||
1900040c MS |
2297 | case bp_overlay_event: |
2298 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2299 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2300 | return PRINT_NOTHING; |
2301 | break; | |
2302 | ||
e514a9d6 | 2303 | case bp_catch_load: |
4f8d1dc6 | 2304 | annotate_catchpoint (b->number); |
a3f17187 | 2305 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2306 | b->number, |
2307 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2308 | return PRINT_SRC_AND_LOC; |
2309 | break; | |
2310 | ||
2311 | case bp_catch_unload: | |
4f8d1dc6 | 2312 | annotate_catchpoint (b->number); |
a3f17187 | 2313 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2314 | b->number, |
2315 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2316 | return PRINT_SRC_AND_LOC; |
2317 | break; | |
2318 | ||
2319 | case bp_catch_fork: | |
4f8d1dc6 | 2320 | annotate_catchpoint (b->number); |
a3f17187 | 2321 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 VP |
2322 | b->number, |
2323 | b->forked_inferior_pid); | |
917317f4 | 2324 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2325 | break; |
2326 | ||
2327 | case bp_catch_vfork: | |
4f8d1dc6 | 2328 | annotate_catchpoint (b->number); |
a3f17187 | 2329 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 VP |
2330 | b->number, |
2331 | b->forked_inferior_pid); | |
e514a9d6 JM |
2332 | return PRINT_SRC_AND_LOC; |
2333 | break; | |
2334 | ||
2335 | case bp_catch_exec: | |
4f8d1dc6 | 2336 | annotate_catchpoint (b->number); |
a3f17187 | 2337 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2338 | b->number, |
2339 | b->exec_pathname); | |
917317f4 | 2340 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2341 | break; |
2342 | ||
e514a9d6 JM |
2343 | case bp_watchpoint: |
2344 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2345 | annotate_watchpoint (b->number); |
2346 | if (ui_out_is_mi_like_p (uiout)) | |
2347 | ui_out_field_string | |
2348 | (uiout, "reason", | |
2349 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2350 | mention (b); | |
2351 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2352 | ui_out_text (uiout, "\nOld value = "); | |
2353 | watchpoint_value_print (bs->old_val, stb->stream); | |
2354 | ui_out_field_stream (uiout, "old", stb); | |
2355 | ui_out_text (uiout, "\nNew value = "); | |
2356 | watchpoint_value_print (b->val, stb->stream); | |
2357 | ui_out_field_stream (uiout, "new", stb); | |
2358 | do_cleanups (ui_out_chain); | |
2359 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2360 | /* More than one watchpoint may have been triggered. */ |
2361 | return PRINT_UNKNOWN; | |
2362 | break; | |
2363 | ||
2364 | case bp_read_watchpoint: | |
9dc5e2a9 | 2365 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2366 | ui_out_field_string |
2367 | (uiout, "reason", | |
2368 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2369 | mention (b); |
3b31d625 | 2370 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2371 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2372 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2373 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2374 | do_cleanups (ui_out_chain); |
8b93c638 | 2375 | ui_out_text (uiout, "\n"); |
917317f4 | 2376 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2377 | break; |
2378 | ||
2379 | case bp_access_watchpoint: | |
fa4727a6 | 2380 | if (bs->old_val != NULL) |
8b93c638 | 2381 | { |
4f8d1dc6 | 2382 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2383 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2384 | ui_out_field_string |
2385 | (uiout, "reason", | |
2386 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2387 | mention (b); |
3b31d625 | 2388 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2389 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2390 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2391 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2392 | ui_out_text (uiout, "\nNew value = "); |
2393 | } | |
2394 | else | |
2395 | { | |
4f8d1dc6 | 2396 | mention (b); |
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)); | |
3b31d625 | 2401 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2402 | ui_out_text (uiout, "\nValue = "); |
2403 | } | |
fa4727a6 | 2404 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2405 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2406 | do_cleanups (ui_out_chain); |
8b93c638 | 2407 | ui_out_text (uiout, "\n"); |
917317f4 | 2408 | return PRINT_UNKNOWN; |
e514a9d6 | 2409 | break; |
4ce44c66 | 2410 | |
e514a9d6 JM |
2411 | /* Fall through, we don't deal with these types of breakpoints |
2412 | here. */ | |
2413 | ||
11cf8741 | 2414 | case bp_finish: |
9dc5e2a9 | 2415 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2416 | ui_out_field_string |
2417 | (uiout, "reason", | |
2418 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2419 | return PRINT_UNKNOWN; |
2420 | break; | |
2421 | ||
e514a9d6 | 2422 | case bp_until: |
9dc5e2a9 | 2423 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2424 | ui_out_field_string |
2425 | (uiout, "reason", | |
2426 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2427 | return PRINT_UNKNOWN; |
2428 | break; | |
2429 | ||
c2d11a7d | 2430 | case bp_none: |
e514a9d6 JM |
2431 | case bp_longjmp: |
2432 | case bp_longjmp_resume: | |
2433 | case bp_step_resume: | |
e514a9d6 JM |
2434 | case bp_watchpoint_scope: |
2435 | case bp_call_dummy: | |
2436 | default: | |
2437 | return PRINT_UNKNOWN; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | /* Generic routine for printing messages indicating why we | |
2442 | stopped. The behavior of this function depends on the value | |
2443 | 'print_it' in the bpstat structure. Under some circumstances we | |
2444 | may decide not to print anything here and delegate the task to | |
2445 | normal_stop(). */ | |
2446 | ||
2447 | static enum print_stop_action | |
2448 | print_bp_stop_message (bpstat bs) | |
2449 | { | |
2450 | switch (bs->print_it) | |
2451 | { | |
2452 | case print_it_noop: | |
2453 | /* Nothing should be printed for this bpstat entry. */ | |
2454 | return PRINT_UNKNOWN; | |
2455 | break; | |
2456 | ||
2457 | case print_it_done: | |
2458 | /* We still want to print the frame, but we already printed the | |
2459 | relevant messages. */ | |
2460 | return PRINT_SRC_AND_LOC; | |
2461 | break; | |
2462 | ||
2463 | case print_it_normal: | |
4f8d1dc6 | 2464 | { |
89f9893c | 2465 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2466 | struct breakpoint *b = bl ? bl->owner : NULL; |
2467 | ||
2468 | /* Normal case. Call the breakpoint's print_it method, or | |
2469 | print_it_typical. */ | |
2470 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2471 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2472 | return b->ops->print_it (b); | |
2473 | else | |
2474 | return print_it_typical (bs); | |
2475 | } | |
2476 | break; | |
3086aeae | 2477 | |
e514a9d6 | 2478 | default: |
8e65ff28 | 2479 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2480 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2481 | break; |
c906108c | 2482 | } |
c906108c SS |
2483 | } |
2484 | ||
e514a9d6 JM |
2485 | /* Print a message indicating what happened. This is called from |
2486 | normal_stop(). The input to this routine is the head of the bpstat | |
2487 | list - a list of the eventpoints that caused this stop. This | |
2488 | routine calls the generic print routine for printing a message | |
2489 | about reasons for stopping. This will print (for example) the | |
2490 | "Breakpoint n," part of the output. The return value of this | |
2491 | routine is one of: | |
c906108c | 2492 | |
917317f4 JM |
2493 | PRINT_UNKNOWN: Means we printed nothing |
2494 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2495 | code to print the location. An example is |
2496 | "Breakpoint 1, " which should be followed by | |
2497 | the location. | |
917317f4 | 2498 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2499 | to also print the location part of the message. |
2500 | An example is the catch/throw messages, which | |
917317f4 JM |
2501 | don't require a location appended to the end. |
2502 | PRINT_NOTHING: We have done some printing and we don't need any | |
2503 | further info to be printed.*/ | |
c906108c | 2504 | |
917317f4 | 2505 | enum print_stop_action |
fba45db2 | 2506 | bpstat_print (bpstat bs) |
c906108c SS |
2507 | { |
2508 | int val; | |
c5aa993b | 2509 | |
c906108c | 2510 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2511 | (Currently all watchpoints go on the bpstat whether hit or not. |
2512 | That probably could (should) be changed, provided care is taken | |
c906108c | 2513 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2514 | for (; bs; bs = bs->next) |
2515 | { | |
2516 | val = print_bp_stop_message (bs); | |
2517 | if (val == PRINT_SRC_ONLY | |
2518 | || val == PRINT_SRC_AND_LOC | |
2519 | || val == PRINT_NOTHING) | |
2520 | return val; | |
2521 | } | |
c906108c | 2522 | |
e514a9d6 JM |
2523 | /* We reached the end of the chain, or we got a null BS to start |
2524 | with and nothing was printed. */ | |
917317f4 | 2525 | return PRINT_UNKNOWN; |
c906108c SS |
2526 | } |
2527 | ||
2528 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2529 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2530 | The argument is a "struct expression *" that has been cast to char * to | |
2531 | make it pass through catch_errors. */ | |
2532 | ||
2533 | static int | |
4efb68b1 | 2534 | breakpoint_cond_eval (void *exp) |
c906108c | 2535 | { |
278cd55f | 2536 | struct value *mark = value_mark (); |
c5aa993b | 2537 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2538 | value_free_to_mark (mark); |
2539 | return i; | |
2540 | } | |
2541 | ||
2542 | /* Allocate a new bpstat and chain it to the current one. */ | |
2543 | ||
2544 | static bpstat | |
89f9893c | 2545 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2546 | { |
2547 | bpstat bs; | |
2548 | ||
2549 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2550 | cbs->next = bs; | |
4f8d1dc6 | 2551 | bs->breakpoint_at = bl; |
c906108c SS |
2552 | /* If the condition is false, etc., don't do the commands. */ |
2553 | bs->commands = NULL; | |
2554 | bs->old_val = NULL; | |
2555 | bs->print_it = print_it_normal; | |
2556 | return bs; | |
2557 | } | |
2558 | \f | |
d983da9c DJ |
2559 | /* The target has stopped with waitstatus WS. Check if any hardware |
2560 | watchpoints have triggered, according to the target. */ | |
2561 | ||
2562 | int | |
2563 | watchpoints_triggered (struct target_waitstatus *ws) | |
2564 | { | |
2565 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2566 | CORE_ADDR addr; | |
2567 | struct breakpoint *b; | |
2568 | ||
2569 | if (!stopped_by_watchpoint) | |
2570 | { | |
2571 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2572 | as not triggered. */ | |
2573 | ALL_BREAKPOINTS (b) | |
2574 | if (b->type == bp_hardware_watchpoint | |
2575 | || b->type == bp_read_watchpoint | |
2576 | || b->type == bp_access_watchpoint) | |
2577 | b->watchpoint_triggered = watch_triggered_no; | |
2578 | ||
2579 | return 0; | |
2580 | } | |
2581 | ||
2582 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2583 | { | |
2584 | /* We were stopped by a watchpoint, but we don't know where. | |
2585 | Mark all watchpoints as unknown. */ | |
2586 | ALL_BREAKPOINTS (b) | |
2587 | if (b->type == bp_hardware_watchpoint | |
2588 | || b->type == bp_read_watchpoint | |
2589 | || b->type == bp_access_watchpoint) | |
2590 | b->watchpoint_triggered = watch_triggered_unknown; | |
2591 | ||
2592 | return stopped_by_watchpoint; | |
2593 | } | |
2594 | ||
2595 | /* The target could report the data address. Mark watchpoints | |
2596 | affected by this data address as triggered, and all others as not | |
2597 | triggered. */ | |
2598 | ||
2599 | ALL_BREAKPOINTS (b) | |
2600 | if (b->type == bp_hardware_watchpoint | |
2601 | || b->type == bp_read_watchpoint | |
2602 | || b->type == bp_access_watchpoint) | |
2603 | { | |
a5606eee | 2604 | struct bp_location *loc; |
d983da9c DJ |
2605 | struct value *v; |
2606 | ||
2607 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2608 | for (loc = b->loc; loc; loc = loc->next) |
2609 | /* Exact match not required. Within range is | |
2610 | sufficient. */ | |
5009afc5 AS |
2611 | if (target_watchpoint_addr_within_range (¤t_target, |
2612 | addr, loc->address, | |
2613 | loc->length)) | |
a5606eee VP |
2614 | { |
2615 | b->watchpoint_triggered = watch_triggered_yes; | |
2616 | break; | |
2617 | } | |
d983da9c DJ |
2618 | } |
2619 | ||
2620 | return 1; | |
2621 | } | |
2622 | ||
c906108c SS |
2623 | /* Possible return values for watchpoint_check (this can't be an enum |
2624 | because of check_errors). */ | |
2625 | /* The watchpoint has been deleted. */ | |
2626 | #define WP_DELETED 1 | |
2627 | /* The value has changed. */ | |
2628 | #define WP_VALUE_CHANGED 2 | |
2629 | /* The value has not changed. */ | |
2630 | #define WP_VALUE_NOT_CHANGED 3 | |
2631 | ||
2632 | #define BP_TEMPFLAG 1 | |
2633 | #define BP_HARDWAREFLAG 2 | |
2634 | ||
2635 | /* Check watchpoint condition. */ | |
2636 | ||
2637 | static int | |
4efb68b1 | 2638 | watchpoint_check (void *p) |
c906108c SS |
2639 | { |
2640 | bpstat bs = (bpstat) p; | |
2641 | struct breakpoint *b; | |
2642 | struct frame_info *fr; | |
2643 | int within_current_scope; | |
2644 | ||
4f8d1dc6 | 2645 | b = bs->breakpoint_at->owner; |
c906108c SS |
2646 | |
2647 | if (b->exp_valid_block == NULL) | |
2648 | within_current_scope = 1; | |
2649 | else | |
2650 | { | |
2651 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2652 | any chance of handling watchpoints on local variables, we'll need |
2653 | the frame chain (so we can determine if we're in scope). */ | |
2654 | reinit_frame_cache (); | |
101dcfbe | 2655 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2656 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2657 | |
2658 | /* If we've gotten confused in the unwinder, we might have | |
2659 | returned a frame that can't describe this variable. */ | |
2660 | if (within_current_scope | |
2661 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2662 | within_current_scope = 0; | |
2663 | ||
c12260ac CV |
2664 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2665 | in the function but the stack frame has already been invalidated. | |
2666 | Since we can't rely on the values of local variables after the | |
2667 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2668 | state as `not changed' without further checking. |
2669 | ||
2670 | vinschen/2003-09-04: The former implementation left out the case | |
2671 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2672 | because the current PC is currently in an epilogue. Calling | |
2673 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2674 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2675 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2676 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2677 | if (fr && within_current_scope) |
c906108c SS |
2678 | /* If we end up stopping, the current frame will get selected |
2679 | in normal_stop. So this call to select_frame won't affect | |
2680 | the user. */ | |
0f7d239c | 2681 | select_frame (fr); |
c906108c | 2682 | } |
c5aa993b | 2683 | |
c906108c SS |
2684 | if (within_current_scope) |
2685 | { | |
2686 | /* We use value_{,free_to_}mark because it could be a | |
2687 | *long* time before we return to the command level and | |
c5aa993b JM |
2688 | call free_all_values. We can't call free_all_values because |
2689 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2690 | |
278cd55f | 2691 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2692 | struct value *new_val; |
2693 | ||
2694 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2695 | if ((b->val != NULL) != (new_val != NULL) | |
2696 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2697 | { |
fa4727a6 DJ |
2698 | if (new_val != NULL) |
2699 | { | |
2700 | release_value (new_val); | |
2701 | value_free_to_mark (mark); | |
2702 | } | |
c906108c SS |
2703 | bs->old_val = b->val; |
2704 | b->val = new_val; | |
fa4727a6 | 2705 | b->val_valid = 1; |
c906108c SS |
2706 | /* We will stop here */ |
2707 | return WP_VALUE_CHANGED; | |
2708 | } | |
2709 | else | |
2710 | { | |
2711 | /* Nothing changed, don't do anything. */ | |
2712 | value_free_to_mark (mark); | |
2713 | /* We won't stop here */ | |
2714 | return WP_VALUE_NOT_CHANGED; | |
2715 | } | |
2716 | } | |
2717 | else | |
2718 | { | |
2719 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2720 | if we temporarily ignored the watchpoint, then when |
2721 | we reenter the block in which it is valid it contains | |
2722 | garbage (in the case of a function, it may have two | |
2723 | garbage values, one before and one after the prologue). | |
2724 | So we can't even detect the first assignment to it and | |
2725 | watch after that (since the garbage may or may not equal | |
2726 | the first value assigned). */ | |
4ce44c66 JM |
2727 | /* We print all the stop information in print_it_typical(), but |
2728 | in this case, by the time we call print_it_typical() this bp | |
2729 | will be deleted already. So we have no choice but print the | |
2730 | information here. */ | |
9dc5e2a9 | 2731 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2732 | ui_out_field_string |
2733 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2734 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2735 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2736 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2737 | which its expression is valid.\n"); | |
4ce44c66 | 2738 | |
c906108c | 2739 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2740 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2741 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2742 | |
2743 | return WP_DELETED; | |
2744 | } | |
2745 | } | |
2746 | ||
18a18393 VP |
2747 | /* Return true if it looks like target has stopped due to hitting |
2748 | breakpoint location BL. This function does not check if we | |
2749 | should stop, only if BL explains the stop. */ | |
2750 | static int | |
2751 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2752 | { | |
2753 | struct breakpoint *b = bl->owner; | |
2754 | ||
2755 | if (b->type != bp_watchpoint | |
2756 | && b->type != bp_hardware_watchpoint | |
2757 | && b->type != bp_read_watchpoint | |
2758 | && b->type != bp_access_watchpoint | |
2759 | && b->type != bp_hardware_breakpoint | |
2760 | && b->type != bp_catch_fork | |
2761 | && b->type != bp_catch_vfork | |
2762 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2763 | { | |
2764 | if (bl->address != bp_addr) /* address doesn't match */ | |
2765 | return 0; | |
2766 | if (overlay_debugging /* unmapped overlay section */ | |
2767 | && section_is_overlay (bl->section) | |
2768 | && !section_is_mapped (bl->section)) | |
2769 | return 0; | |
2770 | } | |
2771 | ||
2772 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2773 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2774 | some data address). Otherwise gdb won't stop on a break instruction | |
2775 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2776 | been defined. Also skip watchpoints which we know did not trigger | |
2777 | (did not match the data address). */ | |
2778 | ||
2779 | if ((b->type == bp_hardware_watchpoint | |
2780 | || b->type == bp_read_watchpoint | |
2781 | || b->type == bp_access_watchpoint) | |
2782 | && b->watchpoint_triggered == watch_triggered_no) | |
2783 | return 0; | |
2784 | ||
2785 | if (b->type == bp_hardware_breakpoint) | |
2786 | { | |
2787 | if (bl->address != bp_addr) | |
2788 | return 0; | |
2789 | if (overlay_debugging /* unmapped overlay section */ | |
2790 | && section_is_overlay (bl->section) | |
2791 | && !section_is_mapped (bl->section)) | |
2792 | return 0; | |
2793 | } | |
2794 | ||
2795 | /* Is this a catchpoint of a load or unload? If so, did we | |
2796 | get a load or unload of the specified library? If not, | |
2797 | ignore it. */ | |
2798 | if ((b->type == bp_catch_load) | |
2799 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2800 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2801 | || ((b->dll_pathname != NULL) | |
2802 | && (strcmp (b->dll_pathname, | |
2803 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2804 | PIDGET (inferior_ptid))) | |
2805 | != 0))) | |
2806 | #endif | |
2807 | ) | |
2808 | return 0; | |
2809 | ||
2810 | if ((b->type == bp_catch_unload) | |
2811 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2812 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2813 | || ((b->dll_pathname != NULL) | |
2814 | && (strcmp (b->dll_pathname, | |
2815 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2816 | PIDGET (inferior_ptid))) | |
2817 | != 0))) | |
2818 | #endif | |
2819 | ) | |
2820 | return 0; | |
2821 | ||
2822 | if ((b->type == bp_catch_fork) | |
2823 | && !inferior_has_forked (PIDGET (inferior_ptid), | |
2824 | &b->forked_inferior_pid)) | |
2825 | return 0; | |
2826 | ||
2827 | if ((b->type == bp_catch_vfork) | |
2828 | && !inferior_has_vforked (PIDGET (inferior_ptid), | |
2829 | &b->forked_inferior_pid)) | |
2830 | return 0; | |
2831 | ||
2832 | if ((b->type == bp_catch_exec) | |
2833 | && !inferior_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) | |
2834 | return 0; | |
2835 | ||
2836 | return 1; | |
2837 | } | |
2838 | ||
2839 | /* If BS refers to a watchpoint, determine if the watched values | |
2840 | has actually changed, and we should stop. If not, set BS->stop | |
2841 | to 0. */ | |
2842 | static void | |
2843 | bpstat_check_watchpoint (bpstat bs) | |
2844 | { | |
2845 | const struct bp_location *bl = bs->breakpoint_at; | |
2846 | struct breakpoint *b = bl->owner; | |
2847 | ||
2848 | if (b->type == bp_watchpoint | |
2849 | || b->type == bp_read_watchpoint | |
2850 | || b->type == bp_access_watchpoint | |
2851 | || b->type == bp_hardware_watchpoint) | |
2852 | { | |
2853 | CORE_ADDR addr; | |
2854 | struct value *v; | |
2855 | int must_check_value = 0; | |
2856 | ||
2857 | if (b->type == bp_watchpoint) | |
2858 | /* For a software watchpoint, we must always check the | |
2859 | watched value. */ | |
2860 | must_check_value = 1; | |
2861 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2862 | /* We have a hardware watchpoint (read, write, or access) | |
2863 | and the target earlier reported an address watched by | |
2864 | this watchpoint. */ | |
2865 | must_check_value = 1; | |
2866 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2867 | && b->type == bp_hardware_watchpoint) | |
2868 | /* We were stopped by a hardware watchpoint, but the target could | |
2869 | not report the data address. We must check the watchpoint's | |
2870 | value. Access and read watchpoints are out of luck; without | |
2871 | a data address, we can't figure it out. */ | |
2872 | must_check_value = 1; | |
2873 | ||
2874 | if (must_check_value) | |
2875 | { | |
2876 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2877 | b->number); | |
2878 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2879 | int e = catch_errors (watchpoint_check, bs, message, | |
2880 | RETURN_MASK_ALL); | |
2881 | do_cleanups (cleanups); | |
2882 | switch (e) | |
2883 | { | |
2884 | case WP_DELETED: | |
2885 | /* We've already printed what needs to be printed. */ | |
2886 | bs->print_it = print_it_done; | |
2887 | /* Stop. */ | |
2888 | break; | |
2889 | case WP_VALUE_CHANGED: | |
2890 | if (b->type == bp_read_watchpoint) | |
2891 | { | |
2892 | /* Don't stop: read watchpoints shouldn't fire if | |
2893 | the value has changed. This is for targets | |
2894 | which cannot set read-only watchpoints. */ | |
2895 | bs->print_it = print_it_noop; | |
2896 | bs->stop = 0; | |
2897 | } | |
2898 | break; | |
2899 | case WP_VALUE_NOT_CHANGED: | |
2900 | if (b->type == bp_hardware_watchpoint | |
2901 | || b->type == bp_watchpoint) | |
2902 | { | |
2903 | /* Don't stop: write watchpoints shouldn't fire if | |
2904 | the value hasn't changed. */ | |
2905 | bs->print_it = print_it_noop; | |
2906 | bs->stop = 0; | |
2907 | } | |
2908 | /* Stop. */ | |
2909 | break; | |
2910 | default: | |
2911 | /* Can't happen. */ | |
2912 | case 0: | |
2913 | /* Error from catch_errors. */ | |
2914 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2915 | if (b->related_breakpoint) | |
2916 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2917 | b->disposition = disp_del_at_next_stop; | |
2918 | /* We've already printed what needs to be printed. */ | |
2919 | bs->print_it = print_it_done; | |
2920 | break; | |
2921 | } | |
2922 | } | |
2923 | else /* must_check_value == 0 */ | |
2924 | { | |
2925 | /* This is a case where some watchpoint(s) triggered, but | |
2926 | not at the address of this watchpoint, or else no | |
2927 | watchpoint triggered after all. So don't print | |
2928 | anything for this watchpoint. */ | |
2929 | bs->print_it = print_it_noop; | |
2930 | bs->stop = 0; | |
2931 | } | |
2932 | } | |
2933 | } | |
2934 | ||
2935 | ||
2936 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2937 | of breakpoint referred to by BS. If we should not stop for this | |
2938 | breakpoint, set BS->stop to 0. */ | |
2939 | static void | |
2940 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2941 | { | |
2942 | int thread_id = pid_to_thread_id (ptid); | |
2943 | const struct bp_location *bl = bs->breakpoint_at; | |
2944 | struct breakpoint *b = bl->owner; | |
2945 | ||
2946 | if (frame_id_p (b->frame_id) | |
2947 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2948 | bs->stop = 0; | |
2949 | else if (bs->stop) | |
2950 | { | |
2951 | int value_is_zero = 0; | |
2952 | ||
2953 | /* If this is a scope breakpoint, mark the associated | |
2954 | watchpoint as triggered so that we will handle the | |
2955 | out-of-scope event. We'll get to the watchpoint next | |
2956 | iteration. */ | |
2957 | if (b->type == bp_watchpoint_scope) | |
2958 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2959 | ||
2960 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2961 | { | |
2962 | /* Need to select the frame, with all that implies | |
2963 | so that the conditions will have the right context. */ | |
2964 | select_frame (get_current_frame ()); | |
2965 | value_is_zero | |
2966 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2967 | "Error in testing breakpoint condition:\n", | |
2968 | RETURN_MASK_ALL); | |
2969 | /* FIXME-someday, should give breakpoint # */ | |
2970 | free_all_values (); | |
2971 | } | |
2972 | if (bl->cond && value_is_zero) | |
2973 | { | |
2974 | bs->stop = 0; | |
2975 | } | |
2976 | else if (b->thread != -1 && b->thread != thread_id) | |
2977 | { | |
2978 | bs->stop = 0; | |
2979 | } | |
2980 | else if (b->ignore_count > 0) | |
2981 | { | |
2982 | b->ignore_count--; | |
2983 | annotate_ignore_count_change (); | |
2984 | bs->stop = 0; | |
2985 | /* Increase the hit count even though we don't | |
2986 | stop. */ | |
2987 | ++(b->hit_count); | |
2988 | } | |
2989 | } | |
2990 | } | |
2991 | ||
2992 | ||
9709f61c | 2993 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2994 | BP_ADDR in thread PTID. |
c906108c | 2995 | |
d983da9c | 2996 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2997 | don't understand this stop. Result is a chain of bpstat's such that: |
2998 | ||
c5aa993b | 2999 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3000 | |
c5aa993b | 3001 | if we understand why we stopped, the result is not null. |
c906108c | 3002 | |
c5aa993b JM |
3003 | Each element of the chain refers to a particular breakpoint or |
3004 | watchpoint at which we have stopped. (We may have stopped for | |
3005 | several reasons concurrently.) | |
c906108c | 3006 | |
c5aa993b JM |
3007 | Each element of the chain has valid next, breakpoint_at, |
3008 | commands, FIXME??? fields. */ | |
c906108c SS |
3009 | |
3010 | bpstat | |
d983da9c | 3011 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3012 | { |
0d381245 | 3013 | struct breakpoint *b = NULL; |
89f9893c | 3014 | const struct bp_location *bl; |
c906108c SS |
3015 | /* Root of the chain of bpstat's */ |
3016 | struct bpstats root_bs[1]; | |
3017 | /* Pointer to the last thing in the chain currently. */ | |
3018 | bpstat bs = root_bs; | |
c906108c | 3019 | |
0d381245 | 3020 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3021 | { |
0d381245 VP |
3022 | b = bl->owner; |
3023 | gdb_assert (b); | |
468d015d | 3024 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3025 | continue; |
3026 | ||
a5606eee VP |
3027 | /* For hardware watchpoints, we look only at the first location. |
3028 | The watchpoint_check function will work on entire expression, | |
3029 | not the individual locations. For read watchopints, the | |
3030 | watchpoints_triggered function have checked all locations | |
3031 | alrea | |
3032 | */ | |
3033 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3034 | continue; | |
3035 | ||
18a18393 VP |
3036 | if (!bpstat_check_location (bl, bp_addr)) |
3037 | continue; | |
3038 | ||
c5aa993b JM |
3039 | /* Come here if it's a watchpoint, or if the break address matches */ |
3040 | ||
0d381245 | 3041 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3042 | |
18a18393 VP |
3043 | /* Assume we stop. Should we find watchpoint that is not actually |
3044 | triggered, or if condition of breakpoint is false, we'll reset | |
3045 | 'stop' to 0. */ | |
c5aa993b JM |
3046 | bs->stop = 1; |
3047 | bs->print = 1; | |
3048 | ||
18a18393 VP |
3049 | bpstat_check_watchpoint (bs); |
3050 | if (!bs->stop) | |
3051 | continue; | |
c5aa993b | 3052 | |
18a18393 VP |
3053 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3054 | /* We do not stop for these. */ | |
c5aa993b JM |
3055 | bs->stop = 0; |
3056 | else | |
18a18393 VP |
3057 | bpstat_check_breakpoint_conditions (bs, ptid); |
3058 | ||
3059 | if (bs->stop) | |
c5aa993b | 3060 | { |
18a18393 | 3061 | ++(b->hit_count); |
d983da9c | 3062 | |
18a18393 VP |
3063 | /* We will stop here */ |
3064 | if (b->disposition == disp_disable) | |
c5aa993b | 3065 | { |
18a18393 VP |
3066 | b->enable_state = bp_disabled; |
3067 | update_global_location_list (); | |
c5aa993b | 3068 | } |
18a18393 VP |
3069 | if (b->silent) |
3070 | bs->print = 0; | |
3071 | bs->commands = b->commands; | |
3072 | if (bs->commands && | |
3073 | (strcmp ("silent", bs->commands->line) == 0 | |
3074 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3075 | { |
18a18393 VP |
3076 | bs->commands = bs->commands->next; |
3077 | bs->print = 0; | |
c5aa993b | 3078 | } |
18a18393 | 3079 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3080 | } |
18a18393 | 3081 | |
c5aa993b JM |
3082 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3083 | if (bs->stop == 0 || bs->print == 0) | |
3084 | bs->print_it = print_it_noop; | |
3085 | } | |
c906108c SS |
3086 | |
3087 | bs->next = NULL; /* Terminate the chain */ | |
3088 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3089 | ||
d983da9c DJ |
3090 | /* If we aren't stopping, the value of some hardware watchpoint may |
3091 | not have changed, but the intermediate memory locations we are | |
3092 | watching may have. Don't bother if we're stopping; this will get | |
3093 | done later. */ | |
3094 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3095 | if (bs->stop) | |
3096 | break; | |
3097 | ||
3098 | if (bs == NULL) | |
3099 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3100 | if (!bs->stop | |
3101 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint | |
3102 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3103 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3104 | { | |
a5606eee VP |
3105 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3106 | location is no longer used by the watchpoint. Prevent | |
3107 | further code from trying to use it. */ | |
3108 | bs->breakpoint_at = NULL; | |
d983da9c DJ |
3109 | remove_breakpoints (); |
3110 | insert_breakpoints (); | |
3111 | break; | |
3112 | } | |
3113 | ||
3114 | return root_bs->next; | |
c906108c SS |
3115 | } |
3116 | \f | |
3117 | /* Tell what to do about this bpstat. */ | |
3118 | struct bpstat_what | |
fba45db2 | 3119 | bpstat_what (bpstat bs) |
c906108c SS |
3120 | { |
3121 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3122 | enum class |
3123 | { | |
3124 | /* This bpstat element has no effect on the main_action. */ | |
3125 | no_effect = 0, | |
3126 | ||
3127 | /* There was a watchpoint, stop but don't print. */ | |
3128 | wp_silent, | |
c906108c | 3129 | |
c5aa993b JM |
3130 | /* There was a watchpoint, stop and print. */ |
3131 | wp_noisy, | |
c906108c | 3132 | |
c5aa993b JM |
3133 | /* There was a breakpoint but we're not stopping. */ |
3134 | bp_nostop, | |
c906108c | 3135 | |
c5aa993b JM |
3136 | /* There was a breakpoint, stop but don't print. */ |
3137 | bp_silent, | |
c906108c | 3138 | |
c5aa993b JM |
3139 | /* There was a breakpoint, stop and print. */ |
3140 | bp_noisy, | |
c906108c | 3141 | |
c5aa993b JM |
3142 | /* We hit the longjmp breakpoint. */ |
3143 | long_jump, | |
c906108c | 3144 | |
c5aa993b JM |
3145 | /* We hit the longjmp_resume breakpoint. */ |
3146 | long_resume, | |
c906108c | 3147 | |
c5aa993b JM |
3148 | /* We hit the step_resume breakpoint. */ |
3149 | step_resume, | |
c906108c | 3150 | |
c5aa993b JM |
3151 | /* We hit the shared library event breakpoint. */ |
3152 | shlib_event, | |
c906108c | 3153 | |
c5aa993b JM |
3154 | /* We caught a shared library event. */ |
3155 | catch_shlib_event, | |
c906108c | 3156 | |
c5aa993b JM |
3157 | /* This is just used to count how many enums there are. */ |
3158 | class_last | |
c906108c SS |
3159 | }; |
3160 | ||
3161 | /* Here is the table which drives this routine. So that we can | |
3162 | format it pretty, we define some abbreviations for the | |
3163 | enum bpstat_what codes. */ | |
3164 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3165 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3166 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3167 | #define sgl BPSTAT_WHAT_SINGLE | |
3168 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3169 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3170 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3171 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3172 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3173 | ||
3174 | /* "Can't happen." Might want to print an error message. | |
3175 | abort() is not out of the question, but chances are GDB is just | |
3176 | a bit confused, not unusable. */ | |
3177 | #define err BPSTAT_WHAT_STOP_NOISY | |
3178 | ||
3179 | /* Given an old action and a class, come up with a new action. */ | |
3180 | /* One interesting property of this table is that wp_silent is the same | |
3181 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3182 | after stopping, the check for whether to step over a breakpoint | |
3183 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3184 | reference to how we stopped. We retain separate wp_silent and |
3185 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3186 | |
3187 | Another possibly interesting property of this table is that | |
3188 | there's a partial ordering, priority-like, of the actions. Once | |
3189 | you've decided that some action is appropriate, you'll never go | |
3190 | back and decide something of a lower priority is better. The | |
3191 | ordering is: | |
3192 | ||
4d5b2cd7 | 3193 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3194 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3195 | slr < err shl shlr sn sr ss |
78b6a731 | 3196 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3197 | ss < shl shlr sn sr |
3198 | sn < shl shlr sr | |
46d57086 DJ |
3199 | shl < shlr sr |
3200 | shlr < sr | |
4d5b2cd7 | 3201 | sr < |
c5aa993b | 3202 | |
43ff13b4 JM |
3203 | What I think this means is that we don't need a damned table |
3204 | here. If you just put the rows and columns in the right order, | |
3205 | it'd look awfully regular. We could simply walk the bpstat list | |
3206 | and choose the highest priority action we find, with a little | |
78b6a731 | 3207 | logic to handle the 'err' cases. */ |
c906108c SS |
3208 | |
3209 | /* step_resume entries: a step resume breakpoint overrides another | |
3210 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3211 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3212 | |
3213 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3214 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3215 | { | |
3216 | /* old action */ | |
78b6a731 | 3217 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3218 | */ |
3219 | /*no_effect */ | |
78b6a731 | 3220 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3221 | /*wp_silent */ |
78b6a731 | 3222 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3223 | /*wp_noisy */ |
78b6a731 | 3224 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3225 | /*bp_nostop */ |
78b6a731 | 3226 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3227 | /*bp_silent */ |
78b6a731 | 3228 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3229 | /*bp_noisy */ |
78b6a731 | 3230 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3231 | /*long_jump */ |
78b6a731 | 3232 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3233 | /*long_resume */ |
78b6a731 | 3234 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3235 | /*step_resume */ |
78b6a731 | 3236 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3237 | /*shlib */ |
78b6a731 | 3238 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3239 | /*catch_shlib */ |
78b6a731 | 3240 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3241 | }; |
c906108c SS |
3242 | |
3243 | #undef kc | |
3244 | #undef ss | |
3245 | #undef sn | |
3246 | #undef sgl | |
3247 | #undef slr | |
3248 | #undef clr | |
c906108c SS |
3249 | #undef err |
3250 | #undef sr | |
3251 | #undef ts | |
3252 | #undef shl | |
3253 | #undef shlr | |
3254 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3255 | struct bpstat_what retval; | |
3256 | ||
3257 | retval.call_dummy = 0; | |
3258 | for (; bs != NULL; bs = bs->next) | |
3259 | { | |
3260 | enum class bs_class = no_effect; | |
3261 | if (bs->breakpoint_at == NULL) | |
3262 | /* I suspect this can happen if it was a momentary breakpoint | |
3263 | which has since been deleted. */ | |
3264 | continue; | |
4f8d1dc6 | 3265 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3266 | { |
3267 | case bp_none: | |
3268 | continue; | |
3269 | ||
3270 | case bp_breakpoint: | |
3271 | case bp_hardware_breakpoint: | |
3272 | case bp_until: | |
3273 | case bp_finish: | |
3274 | if (bs->stop) | |
3275 | { | |
3276 | if (bs->print) | |
3277 | bs_class = bp_noisy; | |
3278 | else | |
3279 | bs_class = bp_silent; | |
3280 | } | |
3281 | else | |
3282 | bs_class = bp_nostop; | |
3283 | break; | |
3284 | case bp_watchpoint: | |
3285 | case bp_hardware_watchpoint: | |
3286 | case bp_read_watchpoint: | |
3287 | case bp_access_watchpoint: | |
3288 | if (bs->stop) | |
3289 | { | |
3290 | if (bs->print) | |
3291 | bs_class = wp_noisy; | |
3292 | else | |
3293 | bs_class = wp_silent; | |
3294 | } | |
3295 | else | |
53a5351d JM |
3296 | /* There was a watchpoint, but we're not stopping. |
3297 | This requires no further action. */ | |
c906108c SS |
3298 | bs_class = no_effect; |
3299 | break; | |
3300 | case bp_longjmp: | |
3301 | bs_class = long_jump; | |
3302 | break; | |
3303 | case bp_longjmp_resume: | |
3304 | bs_class = long_resume; | |
3305 | break; | |
3306 | case bp_step_resume: | |
3307 | if (bs->stop) | |
3308 | { | |
3309 | bs_class = step_resume; | |
3310 | } | |
3311 | else | |
3312 | /* It is for the wrong frame. */ | |
3313 | bs_class = bp_nostop; | |
3314 | break; | |
c906108c SS |
3315 | case bp_watchpoint_scope: |
3316 | bs_class = bp_nostop; | |
3317 | break; | |
c5aa993b JM |
3318 | case bp_shlib_event: |
3319 | bs_class = shlib_event; | |
3320 | break; | |
c4093a6a | 3321 | case bp_thread_event: |
1900040c | 3322 | case bp_overlay_event: |
c4093a6a JM |
3323 | bs_class = bp_nostop; |
3324 | break; | |
c5aa993b JM |
3325 | case bp_catch_load: |
3326 | case bp_catch_unload: | |
3327 | /* Only if this catchpoint triggered should we cause the | |
3328 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3329 | catchpoint. */ | |
3330 | if (bs->stop) | |
3331 | bs_class = catch_shlib_event; | |
3332 | else | |
3333 | bs_class = no_effect; | |
3334 | break; | |
3335 | case bp_catch_fork: | |
3336 | case bp_catch_vfork: | |
3337 | case bp_catch_exec: | |
3338 | if (bs->stop) | |
3339 | { | |
3340 | if (bs->print) | |
3341 | bs_class = bp_noisy; | |
3342 | else | |
3343 | bs_class = bp_silent; | |
3344 | } | |
3345 | else | |
53a5351d JM |
3346 | /* There was a catchpoint, but we're not stopping. |
3347 | This requires no further action. */ | |
c5aa993b JM |
3348 | bs_class = no_effect; |
3349 | break; | |
c906108c | 3350 | case bp_call_dummy: |
53a5351d JM |
3351 | /* Make sure the action is stop (silent or noisy), |
3352 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3353 | bs_class = bp_silent; |
3354 | retval.call_dummy = 1; | |
3355 | break; | |
3356 | } | |
c5aa993b | 3357 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3358 | } |
3359 | retval.main_action = current_action; | |
3360 | return retval; | |
3361 | } | |
3362 | ||
3363 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3364 | without hardware support). This isn't related to a specific bpstat, | |
3365 | just to things like whether watchpoints are set. */ | |
3366 | ||
c5aa993b | 3367 | int |
fba45db2 | 3368 | bpstat_should_step (void) |
c906108c SS |
3369 | { |
3370 | struct breakpoint *b; | |
3371 | ALL_BREAKPOINTS (b) | |
468d015d | 3372 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3373 | return 1; |
c906108c SS |
3374 | return 0; |
3375 | } | |
3376 | ||
c906108c | 3377 | \f |
c5aa993b | 3378 | |
c906108c SS |
3379 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3380 | function returns another bpstat which contains only the catchpoints | |
3381 | on that first list, if any. */ | |
3382 | void | |
fba45db2 | 3383 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3384 | { |
3385 | struct bpstats root_bs[1]; | |
3386 | bpstat bs = root_bs; | |
3387 | struct breakpoint *ep; | |
3388 | char *dll_pathname; | |
3389 | ||
c906108c SS |
3390 | bpstat_clear (cp_list); |
3391 | root_bs->next = NULL; | |
c5aa993b JM |
3392 | |
3393 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3394 | { |
3395 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3396 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3397 | if (ep == NULL) |
c5aa993b JM |
3398 | break; |
3399 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3400 | (ep->type != bp_catch_unload)) |
53a5351d | 3401 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3402 | continue; |
3403 | ||
c906108c | 3404 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3405 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3406 | *bs = *ep_list; |
3407 | bs->next = NULL; | |
3408 | bs = root_bs->next; | |
c5aa993b | 3409 | |
c906108c SS |
3410 | #if defined(SOLIB_ADD) |
3411 | /* Also, for each triggered catchpoint, tag it with the name of | |
3412 | the library that caused this trigger. (We copy the name now, | |
3413 | because it's only guaranteed to be available NOW, when the | |
3414 | catchpoint triggers. Clients who may wish to know the name | |
3415 | later must get it from the catchpoint itself.) */ | |
3416 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3417 | xfree (ep->triggered_dll_pathname); |
c906108c | 3418 | if (ep->type == bp_catch_load) |
39f77062 KB |
3419 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3420 | PIDGET (inferior_ptid)); | |
c906108c | 3421 | else |
39f77062 KB |
3422 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3423 | PIDGET (inferior_ptid)); | |
c906108c SS |
3424 | #else |
3425 | dll_pathname = NULL; | |
3426 | #endif | |
3427 | if (dll_pathname) | |
3428 | { | |
53a5351d JM |
3429 | ep->triggered_dll_pathname = (char *) |
3430 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3431 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3432 | } | |
3433 | else | |
3434 | ep->triggered_dll_pathname = NULL; | |
3435 | } | |
c5aa993b | 3436 | |
c906108c SS |
3437 | *cp_list = bs; |
3438 | } | |
3439 | ||
0d381245 VP |
3440 | static void print_breakpoint_location (struct breakpoint *b, |
3441 | struct bp_location *loc, | |
3442 | char *wrap_indent, | |
3443 | struct ui_stream *stb) | |
3444 | { | |
3445 | if (b->source_file) | |
3446 | { | |
3447 | struct symbol *sym | |
3448 | = find_pc_sect_function (loc->address, loc->section); | |
3449 | if (sym) | |
3450 | { | |
3451 | ui_out_text (uiout, "in "); | |
3452 | ui_out_field_string (uiout, "func", | |
3453 | SYMBOL_PRINT_NAME (sym)); | |
3454 | ui_out_wrap_hint (uiout, wrap_indent); | |
3455 | ui_out_text (uiout, " at "); | |
3456 | } | |
3457 | ui_out_field_string (uiout, "file", b->source_file); | |
3458 | ui_out_text (uiout, ":"); | |
3459 | ||
3460 | if (ui_out_is_mi_like_p (uiout)) | |
3461 | { | |
3462 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3463 | char *fullname = symtab_to_fullname (sal.symtab); | |
3464 | ||
3465 | if (fullname) | |
3466 | ui_out_field_string (uiout, "fullname", fullname); | |
3467 | } | |
3468 | ||
3469 | ui_out_field_int (uiout, "line", b->line_number); | |
3470 | } | |
3471 | else if (!b->loc) | |
3472 | { | |
3473 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3474 | } | |
3475 | else | |
3476 | { | |
3477 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3478 | ui_out_field_stream (uiout, "at", stb); | |
3479 | } | |
3480 | } | |
3481 | ||
c4093a6a | 3482 | /* Print B to gdb_stdout. */ |
c906108c | 3483 | static void |
0d381245 VP |
3484 | print_one_breakpoint_location (struct breakpoint *b, |
3485 | struct bp_location *loc, | |
3486 | int loc_number, | |
3487 | CORE_ADDR *last_addr) | |
c906108c | 3488 | { |
52f0bd74 AC |
3489 | struct command_line *l; |
3490 | struct symbol *sym; | |
c4093a6a JM |
3491 | struct ep_type_description |
3492 | { | |
3493 | enum bptype type; | |
3494 | char *description; | |
3495 | }; | |
3496 | static struct ep_type_description bptypes[] = | |
c906108c | 3497 | { |
c5aa993b JM |
3498 | {bp_none, "?deleted?"}, |
3499 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3500 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3501 | {bp_until, "until"}, |
3502 | {bp_finish, "finish"}, | |
3503 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3504 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3505 | {bp_read_watchpoint, "read watchpoint"}, |
3506 | {bp_access_watchpoint, "acc watchpoint"}, | |
3507 | {bp_longjmp, "longjmp"}, | |
3508 | {bp_longjmp_resume, "longjmp resume"}, | |
3509 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3510 | {bp_watchpoint_scope, "watchpoint scope"}, |
3511 | {bp_call_dummy, "call dummy"}, | |
3512 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3513 | {bp_thread_event, "thread events"}, |
1900040c | 3514 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3515 | {bp_catch_load, "catch load"}, |
3516 | {bp_catch_unload, "catch unload"}, | |
3517 | {bp_catch_fork, "catch fork"}, | |
3518 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3519 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3520 | }; |
c4093a6a | 3521 | |
c2c6d25f | 3522 | static char bpenables[] = "nynny"; |
c906108c | 3523 | char wrap_indent[80]; |
8b93c638 JM |
3524 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3525 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3526 | struct cleanup *bkpt_chain; |
c906108c | 3527 | |
0d381245 VP |
3528 | int header_of_multiple = 0; |
3529 | int part_of_multiple = (loc != NULL); | |
3530 | ||
3531 | gdb_assert (!loc || loc_number != 0); | |
3532 | /* See comment in print_one_breakpoint concerning | |
3533 | treatment of breakpoints with single disabled | |
3534 | location. */ | |
3535 | if (loc == NULL | |
3536 | && (b->loc != NULL | |
3537 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3538 | header_of_multiple = 1; | |
3539 | if (loc == NULL) | |
3540 | loc = b->loc; | |
3541 | ||
c4093a6a | 3542 | annotate_record (); |
3b31d625 | 3543 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3544 | |
3545 | /* 1 */ | |
3546 | annotate_field (0); | |
0d381245 VP |
3547 | if (part_of_multiple) |
3548 | { | |
3549 | char *formatted; | |
0c6773c1 | 3550 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3551 | ui_out_field_string (uiout, "number", formatted); |
3552 | xfree (formatted); | |
3553 | } | |
3554 | else | |
3555 | { | |
3556 | ui_out_field_int (uiout, "number", b->number); | |
3557 | } | |
c4093a6a JM |
3558 | |
3559 | /* 2 */ | |
3560 | annotate_field (1); | |
0d381245 VP |
3561 | if (part_of_multiple) |
3562 | ui_out_field_skip (uiout, "type"); | |
3563 | else | |
3564 | { | |
3565 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3566 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3567 | internal_error (__FILE__, __LINE__, | |
3568 | _("bptypes table does not describe type #%d."), | |
3569 | (int) b->type); | |
3570 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3571 | } | |
c4093a6a JM |
3572 | |
3573 | /* 3 */ | |
3574 | annotate_field (2); | |
0d381245 VP |
3575 | if (part_of_multiple) |
3576 | ui_out_field_skip (uiout, "disp"); | |
3577 | else | |
2cec12e5 | 3578 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3579 | |
c4093a6a JM |
3580 | |
3581 | /* 4 */ | |
3582 | annotate_field (3); | |
0d381245 | 3583 | if (part_of_multiple) |
54e52265 | 3584 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3585 | else |
54e52265 VP |
3586 | ui_out_field_fmt (uiout, "enabled", "%c", |
3587 | bpenables[(int) b->enable_state]); | |
3588 | ui_out_spaces (uiout, 2); | |
0d381245 | 3589 | |
c4093a6a JM |
3590 | |
3591 | /* 5 and 6 */ | |
3592 | strcpy (wrap_indent, " "); | |
3593 | if (addressprint) | |
75ac9d7b | 3594 | { |
17a912b6 | 3595 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3596 | strcat (wrap_indent, " "); |
3597 | else | |
3598 | strcat (wrap_indent, " "); | |
3599 | } | |
c906108c | 3600 | |
3086aeae | 3601 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3602 | { |
3603 | /* Although the print_one can possibly print | |
3604 | all locations, calling it here is not likely | |
3605 | to get any nice result. So, make sure there's | |
3606 | just one location. */ | |
3607 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3608 | b->ops->print_one (b, last_addr); | |
3609 | } | |
3086aeae DJ |
3610 | else |
3611 | switch (b->type) | |
3612 | { | |
3613 | case bp_none: | |
3614 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3615 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3616 | break; |
c906108c | 3617 | |
3086aeae DJ |
3618 | case bp_watchpoint: |
3619 | case bp_hardware_watchpoint: | |
3620 | case bp_read_watchpoint: | |
3621 | case bp_access_watchpoint: | |
3622 | /* Field 4, the address, is omitted (which makes the columns | |
3623 | not line up too nicely with the headers, but the effect | |
3624 | is relatively readable). */ | |
3625 | if (addressprint) | |
3626 | ui_out_field_skip (uiout, "addr"); | |
3627 | annotate_field (5); | |
3628 | print_expression (b->exp, stb->stream); | |
3629 | ui_out_field_stream (uiout, "what", stb); | |
3630 | break; | |
3631 | ||
3632 | case bp_catch_load: | |
3633 | case bp_catch_unload: | |
3634 | /* Field 4, the address, is omitted (which makes the columns | |
3635 | not line up too nicely with the headers, but the effect | |
3636 | is relatively readable). */ | |
3637 | if (addressprint) | |
3638 | ui_out_field_skip (uiout, "addr"); | |
3639 | annotate_field (5); | |
3640 | if (b->dll_pathname == NULL) | |
3641 | { | |
3642 | ui_out_field_string (uiout, "what", "<any library>"); | |
3643 | ui_out_spaces (uiout, 1); | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | ui_out_text (uiout, "library \""); | |
3648 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3649 | ui_out_text (uiout, "\" "); | |
3650 | } | |
3651 | break; | |
3652 | ||
3653 | case bp_catch_fork: | |
3654 | case bp_catch_vfork: | |
3655 | /* Field 4, the address, is omitted (which makes the columns | |
3656 | not line up too nicely with the headers, but the effect | |
3657 | is relatively readable). */ | |
3658 | if (addressprint) | |
3659 | ui_out_field_skip (uiout, "addr"); | |
3660 | annotate_field (5); | |
3661 | if (b->forked_inferior_pid != 0) | |
3662 | { | |
3663 | ui_out_text (uiout, "process "); | |
3664 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3665 | ui_out_spaces (uiout, 1); | |
3666 | } | |
0f699bbe | 3667 | break; |
3086aeae DJ |
3668 | |
3669 | case bp_catch_exec: | |
3670 | /* Field 4, the address, is omitted (which makes the columns | |
3671 | not line up too nicely with the headers, but the effect | |
3672 | is relatively readable). */ | |
3673 | if (addressprint) | |
3674 | ui_out_field_skip (uiout, "addr"); | |
3675 | annotate_field (5); | |
3676 | if (b->exec_pathname != NULL) | |
3677 | { | |
3678 | ui_out_text (uiout, "program \""); | |
3679 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3680 | ui_out_text (uiout, "\" "); | |
3681 | } | |
3682 | break; | |
3683 | ||
3086aeae DJ |
3684 | case bp_breakpoint: |
3685 | case bp_hardware_breakpoint: | |
3686 | case bp_until: | |
3687 | case bp_finish: | |
3688 | case bp_longjmp: | |
3689 | case bp_longjmp_resume: | |
3690 | case bp_step_resume: | |
3086aeae DJ |
3691 | case bp_watchpoint_scope: |
3692 | case bp_call_dummy: | |
3693 | case bp_shlib_event: | |
3694 | case bp_thread_event: | |
3695 | case bp_overlay_event: | |
3696 | if (addressprint) | |
3697 | { | |
3698 | annotate_field (4); | |
54e52265 | 3699 | if (header_of_multiple) |
0d381245 | 3700 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3701 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3702 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3703 | else |
0d381245 | 3704 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3705 | } |
3706 | annotate_field (5); | |
0d381245 VP |
3707 | if (!header_of_multiple) |
3708 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3709 | if (b->loc) | |
3710 | *last_addr = b->loc->address; | |
3086aeae DJ |
3711 | break; |
3712 | } | |
c906108c | 3713 | |
0d381245 | 3714 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3715 | { |
8b93c638 JM |
3716 | /* FIXME: This seems to be redundant and lost here; see the |
3717 | "stop only in" line a little further down. */ | |
3718 | ui_out_text (uiout, " thread "); | |
3719 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3720 | } |
3721 | ||
8b93c638 | 3722 | ui_out_text (uiout, "\n"); |
c4093a6a | 3723 | |
0d381245 | 3724 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3725 | { |
3726 | annotate_field (6); | |
8b93c638 | 3727 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3728 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3729 | the frame ID. */ | |
d0a55772 | 3730 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3731 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3732 | } |
3733 | ||
0d381245 | 3734 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3735 | { |
f7f9143b JB |
3736 | /* We do not print the condition for Ada exception catchpoints |
3737 | because the condition is an internal implementation detail | |
3738 | that we do not want to expose to the user. */ | |
c4093a6a | 3739 | annotate_field (7); |
8b93c638 | 3740 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3741 | ui_out_field_string (uiout, "cond", b->cond_string); |
3742 | ui_out_text (uiout, "\n"); | |
3743 | } | |
3744 | ||
0d381245 | 3745 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3746 | { |
3747 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3748 | ui_out_text (uiout, "\tstop only in thread "); |
3749 | ui_out_field_int (uiout, "thread", b->thread); | |
3750 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3751 | } |
3752 | ||
0d381245 | 3753 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count) |
c4093a6a JM |
3754 | { |
3755 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3756 | if (ep_is_catchpoint (b)) |
3757 | ui_out_text (uiout, "\tcatchpoint"); | |
3758 | else | |
3759 | ui_out_text (uiout, "\tbreakpoint"); | |
3760 | ui_out_text (uiout, " already hit "); | |
3761 | ui_out_field_int (uiout, "times", b->hit_count); | |
3762 | if (b->hit_count == 1) | |
3763 | ui_out_text (uiout, " time\n"); | |
3764 | else | |
3765 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3766 | } |
3767 | ||
fb40c209 AC |
3768 | /* Output the count also if it is zero, but only if this is |
3769 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3770 | if (ui_out_is_mi_like_p (uiout)) |
0d381245 | 3771 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count == 0) |
fb40c209 | 3772 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3773 | |
0d381245 | 3774 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3775 | { |
3776 | annotate_field (8); | |
8b93c638 JM |
3777 | ui_out_text (uiout, "\tignore next "); |
3778 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3779 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3780 | } |
3781 | ||
0d381245 | 3782 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3783 | { |
3b31d625 EZ |
3784 | struct cleanup *script_chain; |
3785 | ||
c4093a6a | 3786 | annotate_field (9); |
3b31d625 | 3787 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3788 | print_command_lines (uiout, l, 4); |
3b31d625 | 3789 | do_cleanups (script_chain); |
c4093a6a | 3790 | } |
d24317b4 VP |
3791 | |
3792 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3793 | { | |
3794 | if (b->addr_string) | |
3795 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3796 | else if (b->exp_string) | |
3797 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3798 | } | |
3799 | ||
3b31d625 | 3800 | do_cleanups (bkpt_chain); |
8b93c638 | 3801 | do_cleanups (old_chain); |
c4093a6a | 3802 | } |
c5aa993b | 3803 | |
0d381245 VP |
3804 | static void |
3805 | print_one_breakpoint (struct breakpoint *b, | |
3806 | CORE_ADDR *last_addr) | |
3807 | { | |
3808 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3809 | ||
3810 | /* If this breakpoint has custom print function, | |
3811 | it's already printed. Otherwise, print individual | |
3812 | locations, if any. */ | |
3813 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3814 | { | |
3815 | /* If breakpoint has a single location that is | |
3816 | disabled, we print it as if it had | |
3817 | several locations, since otherwise it's hard to | |
3818 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3819 | situation. |
3820 | Note that while hardware watchpoints have | |
3821 | several locations internally, that's no a property | |
3822 | exposed to user. */ | |
0d381245 | 3823 | if (b->loc |
a5606eee | 3824 | && !is_hardware_watchpoint (b) |
0d381245 | 3825 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3826 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3827 | { |
3828 | struct bp_location *loc; | |
3829 | int n = 1; | |
3830 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3831 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3832 | } | |
3833 | } | |
3834 | } | |
3835 | ||
3836 | ||
c4093a6a JM |
3837 | struct captured_breakpoint_query_args |
3838 | { | |
3839 | int bnum; | |
3840 | }; | |
c5aa993b | 3841 | |
c4093a6a | 3842 | static int |
2b65245e | 3843 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3844 | { |
3845 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3846 | struct breakpoint *b; |
c4093a6a JM |
3847 | CORE_ADDR dummy_addr = 0; |
3848 | ALL_BREAKPOINTS (b) | |
3849 | { | |
3850 | if (args->bnum == b->number) | |
c5aa993b | 3851 | { |
c4093a6a JM |
3852 | print_one_breakpoint (b, &dummy_addr); |
3853 | return GDB_RC_OK; | |
c5aa993b | 3854 | } |
c4093a6a JM |
3855 | } |
3856 | return GDB_RC_NONE; | |
3857 | } | |
c5aa993b | 3858 | |
c4093a6a | 3859 | enum gdb_rc |
ce43223b | 3860 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3861 | { |
3862 | struct captured_breakpoint_query_args args; | |
3863 | args.bnum = bnum; | |
3864 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3865 | an error. */ | |
b0b13bb4 DJ |
3866 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3867 | error_message, RETURN_MASK_ALL) < 0) | |
3868 | return GDB_RC_FAIL; | |
3869 | else | |
3870 | return GDB_RC_OK; | |
c4093a6a | 3871 | } |
c5aa993b | 3872 | |
7f3b0473 AC |
3873 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3874 | catchpoints, et.al.). */ | |
3875 | ||
3876 | static int | |
3877 | user_settable_breakpoint (const struct breakpoint *b) | |
3878 | { | |
3879 | return (b->type == bp_breakpoint | |
3880 | || b->type == bp_catch_load | |
3881 | || b->type == bp_catch_unload | |
3882 | || b->type == bp_catch_fork | |
3883 | || b->type == bp_catch_vfork | |
3884 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3885 | || b->type == bp_hardware_breakpoint |
3886 | || b->type == bp_watchpoint | |
3887 | || b->type == bp_read_watchpoint | |
3888 | || b->type == bp_access_watchpoint | |
3889 | || b->type == bp_hardware_watchpoint); | |
3890 | } | |
3891 | ||
3892 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3893 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3894 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3895 | |
c4093a6a | 3896 | static void |
fba45db2 | 3897 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3898 | { |
52f0bd74 | 3899 | struct breakpoint *b; |
c4093a6a | 3900 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3901 | int nr_printable_breakpoints; |
3b31d625 | 3902 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3903 | |
7f3b0473 AC |
3904 | /* Compute the number of rows in the table. */ |
3905 | nr_printable_breakpoints = 0; | |
3906 | ALL_BREAKPOINTS (b) | |
3907 | if (bnum == -1 | |
3908 | || bnum == b->number) | |
3909 | { | |
3910 | if (allflag || user_settable_breakpoint (b)) | |
3911 | nr_printable_breakpoints++; | |
3912 | } | |
3913 | ||
8b93c638 | 3914 | if (addressprint) |
3b31d625 EZ |
3915 | bkpttbl_chain |
3916 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3917 | "BreakpointTable"); | |
8b93c638 | 3918 | else |
3b31d625 EZ |
3919 | bkpttbl_chain |
3920 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3921 | "BreakpointTable"); | |
8b93c638 | 3922 | |
7f3b0473 | 3923 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3924 | annotate_breakpoints_headers (); |
3925 | if (nr_printable_breakpoints > 0) | |
3926 | annotate_field (0); | |
0d381245 | 3927 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3928 | if (nr_printable_breakpoints > 0) |
3929 | annotate_field (1); | |
3930 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3931 | if (nr_printable_breakpoints > 0) | |
3932 | annotate_field (2); | |
3933 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3934 | if (nr_printable_breakpoints > 0) | |
3935 | annotate_field (3); | |
54e52265 | 3936 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3937 | if (addressprint) |
7f3b0473 | 3938 | { |
d7faa9e7 AC |
3939 | if (nr_printable_breakpoints > 0) |
3940 | annotate_field (4); | |
17a912b6 | 3941 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3942 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3943 | else |
b25959ec | 3944 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3945 | } |
d7faa9e7 AC |
3946 | if (nr_printable_breakpoints > 0) |
3947 | annotate_field (5); | |
3948 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3949 | ui_out_table_body (uiout); | |
3950 | if (nr_printable_breakpoints > 0) | |
3951 | annotate_breakpoints_table (); | |
7f3b0473 | 3952 | |
c4093a6a JM |
3953 | ALL_BREAKPOINTS (b) |
3954 | if (bnum == -1 | |
3955 | || bnum == b->number) | |
3956 | { | |
3957 | /* We only print out user settable breakpoints unless the | |
3958 | allflag is set. */ | |
7f3b0473 AC |
3959 | if (allflag || user_settable_breakpoint (b)) |
3960 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3961 | } |
3962 | ||
3b31d625 | 3963 | do_cleanups (bkpttbl_chain); |
698384cd | 3964 | |
7f3b0473 | 3965 | if (nr_printable_breakpoints == 0) |
c906108c | 3966 | { |
8b93c638 JM |
3967 | if (bnum == -1) |
3968 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3969 | else | |
3970 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3971 | bnum); | |
c906108c SS |
3972 | } |
3973 | else | |
c4093a6a JM |
3974 | { |
3975 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3976 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3977 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3978 | set_next_address (last_addr); |
3979 | } | |
c906108c | 3980 | |
c4093a6a JM |
3981 | /* FIXME? Should this be moved up so that it is only called when |
3982 | there have been breakpoints? */ | |
c906108c SS |
3983 | annotate_breakpoints_table_end (); |
3984 | } | |
3985 | ||
c906108c | 3986 | static void |
fba45db2 | 3987 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3988 | { |
3989 | int bnum = -1; | |
3990 | ||
3991 | if (bnum_exp) | |
bb518678 | 3992 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3993 | |
3994 | breakpoint_1 (bnum, 0); | |
3995 | } | |
3996 | ||
7a292a7a | 3997 | static void |
fba45db2 | 3998 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3999 | { |
4000 | int bnum = -1; | |
4001 | ||
4002 | if (bnum_exp) | |
bb518678 | 4003 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4004 | |
4005 | breakpoint_1 (bnum, 1); | |
4006 | } | |
4007 | ||
0d381245 VP |
4008 | static int |
4009 | breakpoint_has_pc (struct breakpoint *b, CORE_ADDR pc, asection *section) | |
4010 | { | |
4011 | struct bp_location *bl = b->loc; | |
4012 | for (; bl; bl = bl->next) | |
4013 | { | |
4014 | if (bl->address == pc | |
4015 | && (!overlay_debugging || bl->section == section)) | |
4016 | return 1; | |
4017 | } | |
4018 | return 0; | |
4019 | } | |
4020 | ||
c906108c SS |
4021 | /* Print a message describing any breakpoints set at PC. */ |
4022 | ||
4023 | static void | |
d674a25c | 4024 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 4025 | { |
52f0bd74 AC |
4026 | int others = 0; |
4027 | struct breakpoint *b; | |
c906108c SS |
4028 | |
4029 | ALL_BREAKPOINTS (b) | |
0d381245 | 4030 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4031 | if (others > 0) |
4032 | { | |
a3f17187 AC |
4033 | if (others == 1) |
4034 | printf_filtered (_("Note: breakpoint ")); | |
4035 | else /* if (others == ???) */ | |
4036 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4037 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4038 | if (breakpoint_has_pc (b, pc, section)) |
4039 | { | |
4040 | others--; | |
4041 | printf_filtered ("%d", b->number); | |
4042 | if (b->thread == -1 && thread != -1) | |
4043 | printf_filtered (" (all threads)"); | |
4044 | else if (b->thread != -1) | |
4045 | printf_filtered (" (thread %d)", b->thread); | |
4046 | printf_filtered ("%s%s ", | |
4047 | ((b->enable_state == bp_disabled || | |
4048 | b->enable_state == bp_call_disabled) | |
4049 | ? " (disabled)" | |
4050 | : b->enable_state == bp_permanent | |
4051 | ? " (permanent)" | |
4052 | : ""), | |
4053 | (others > 1) ? "," | |
4054 | : ((others == 1) ? " and" : "")); | |
4055 | } | |
a3f17187 | 4056 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4057 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4058 | printf_filtered (".\n"); |
4059 | } | |
4060 | } | |
4061 | \f | |
4062 | /* Set the default place to put a breakpoint | |
4063 | for the `break' command with no arguments. */ | |
4064 | ||
4065 | void | |
fba45db2 KB |
4066 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4067 | int line) | |
c906108c SS |
4068 | { |
4069 | default_breakpoint_valid = valid; | |
4070 | default_breakpoint_address = addr; | |
4071 | default_breakpoint_symtab = symtab; | |
4072 | default_breakpoint_line = line; | |
4073 | } | |
4074 | ||
e4f237da KB |
4075 | /* Return true iff it is meaningful to use the address member of |
4076 | BPT. For some breakpoint types, the address member is irrelevant | |
4077 | and it makes no sense to attempt to compare it to other addresses | |
4078 | (or use it for any other purpose either). | |
4079 | ||
4080 | More specifically, each of the following breakpoint types will always | |
4081 | have a zero valued address and we don't want check_duplicates() to mark | |
4082 | breakpoints of any of these types to be a duplicate of an actual | |
4083 | breakpoint at address zero: | |
4084 | ||
4085 | bp_watchpoint | |
4086 | bp_hardware_watchpoint | |
4087 | bp_read_watchpoint | |
4088 | bp_access_watchpoint | |
4089 | bp_catch_exec | |
e4f237da KB |
4090 | bp_catch_fork |
4091 | bp_catch_vork */ | |
4092 | ||
4093 | static int | |
4094 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4095 | { | |
4096 | enum bptype type = bpt->type; | |
4097 | ||
4098 | return (type != bp_watchpoint | |
4099 | && type != bp_hardware_watchpoint | |
4100 | && type != bp_read_watchpoint | |
4101 | && type != bp_access_watchpoint | |
4102 | && type != bp_catch_exec | |
e4f237da KB |
4103 | && type != bp_catch_fork |
4104 | && type != bp_catch_vfork); | |
4105 | } | |
4106 | ||
9f60f21b | 4107 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4108 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4109 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4110 | If we have a permanent breakpoint at the same place as BPT, make |
4111 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4112 | |
4113 | static void | |
0d381245 | 4114 | check_duplicates_for (CORE_ADDR address, asection *section) |
c906108c | 4115 | { |
075f6582 | 4116 | struct bp_location *b; |
52f0bd74 | 4117 | int count = 0; |
075f6582 | 4118 | struct bp_location *perm_bp = 0; |
c906108c | 4119 | |
075f6582 DJ |
4120 | ALL_BP_LOCATIONS (b) |
4121 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4122 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4123 | && b->enabled |
4124 | && !b->shlib_disabled | |
075f6582 DJ |
4125 | && b->address == address /* address / overlay match */ |
4126 | && (!overlay_debugging || b->section == section) | |
4127 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4128 | { |
c2c6d25f | 4129 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4130 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4131 | { |
4132 | perm_bp = b; | |
4133 | break; | |
4134 | } | |
4135 | ||
c5aa993b | 4136 | count++; |
075f6582 | 4137 | b->duplicate = count > 1; |
c5aa993b | 4138 | } |
c2c6d25f JM |
4139 | |
4140 | /* If we found a permanent breakpoint at this address, go over the | |
4141 | list again and declare all the other breakpoints there to be the | |
4142 | duplicates. */ | |
4143 | if (perm_bp) | |
4144 | { | |
075f6582 | 4145 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4146 | |
4147 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4148 | if (! perm_bp->inserted) |
8e65ff28 | 4149 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4150 | _("allegedly permanent breakpoint is not " |
4151 | "actually inserted")); | |
c2c6d25f | 4152 | |
075f6582 | 4153 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4154 | if (b != perm_bp) |
4155 | { | |
075f6582 | 4156 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4157 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4158 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4159 | && b->address == address /* address / overlay match */ |
4160 | && (!overlay_debugging || b->section == section) | |
4161 | && breakpoint_address_is_meaningful (b->owner)) | |
4162 | { | |
4163 | if (b->inserted) | |
4164 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4165 | _("another breakpoint was inserted on top of " |
4166 | "a permanent breakpoint")); | |
075f6582 DJ |
4167 | |
4168 | b->duplicate = 1; | |
4169 | } | |
c2c6d25f JM |
4170 | } |
4171 | } | |
c906108c SS |
4172 | } |
4173 | ||
0d381245 VP |
4174 | static void |
4175 | check_duplicates (struct breakpoint *bpt) | |
4176 | { | |
4177 | struct bp_location *bl = bpt->loc; | |
4178 | ||
4179 | if (! breakpoint_address_is_meaningful (bpt)) | |
4180 | return; | |
4181 | ||
4182 | for (; bl; bl = bl->next) | |
4183 | check_duplicates_for (bl->address, bl->section); | |
4184 | } | |
4185 | ||
76897487 KB |
4186 | static void |
4187 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4188 | int bnum, int have_bnum) | |
4189 | { | |
4190 | char astr1[40]; | |
4191 | char astr2[40]; | |
4192 | ||
bb599908 PH |
4193 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4194 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4195 | if (have_bnum) |
8a3fe4f8 | 4196 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4197 | bnum, astr1, astr2); |
4198 | else | |
8a3fe4f8 | 4199 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4200 | } |
4201 | ||
4202 | /* Adjust a breakpoint's address to account for architectural constraints | |
4203 | on breakpoint placement. Return the adjusted address. Note: Very | |
4204 | few targets require this kind of adjustment. For most targets, | |
4205 | this function is simply the identity function. */ | |
4206 | ||
4207 | static CORE_ADDR | |
88f7da05 | 4208 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4209 | { |
4210 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4211 | { | |
4212 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4213 | return bpaddr; | |
4214 | } | |
88f7da05 KB |
4215 | else if (bptype == bp_watchpoint |
4216 | || bptype == bp_hardware_watchpoint | |
4217 | || bptype == bp_read_watchpoint | |
4218 | || bptype == bp_access_watchpoint | |
4219 | || bptype == bp_catch_fork | |
4220 | || bptype == bp_catch_vfork | |
4221 | || bptype == bp_catch_exec) | |
4222 | { | |
4223 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4224 | have their addresses modified. */ | |
4225 | return bpaddr; | |
4226 | } | |
76897487 KB |
4227 | else |
4228 | { | |
4229 | CORE_ADDR adjusted_bpaddr; | |
4230 | ||
4231 | /* Some targets have architectural constraints on the placement | |
4232 | of breakpoint instructions. Obtain the adjusted address. */ | |
4233 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4234 | bpaddr); | |
4235 | ||
4236 | /* An adjusted breakpoint address can significantly alter | |
4237 | a user's expectations. Print a warning if an adjustment | |
4238 | is required. */ | |
4239 | if (adjusted_bpaddr != bpaddr) | |
4240 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4241 | ||
4242 | return adjusted_bpaddr; | |
4243 | } | |
4244 | } | |
4245 | ||
7cc221ef DJ |
4246 | /* Allocate a struct bp_location. */ |
4247 | ||
26bb91f3 | 4248 | static struct bp_location * |
e049a4b5 | 4249 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4250 | { |
4251 | struct bp_location *loc, *loc_p; | |
4252 | ||
4253 | loc = xmalloc (sizeof (struct bp_location)); | |
4254 | memset (loc, 0, sizeof (*loc)); | |
4255 | ||
e049a4b5 | 4256 | loc->owner = bpt; |
511a6cd4 | 4257 | loc->cond = NULL; |
0d381245 VP |
4258 | loc->shlib_disabled = 0; |
4259 | loc->enabled = 1; | |
e049a4b5 DJ |
4260 | |
4261 | switch (bp_type) | |
4262 | { | |
4263 | case bp_breakpoint: | |
4264 | case bp_until: | |
4265 | case bp_finish: | |
4266 | case bp_longjmp: | |
4267 | case bp_longjmp_resume: | |
4268 | case bp_step_resume: | |
e049a4b5 DJ |
4269 | case bp_watchpoint_scope: |
4270 | case bp_call_dummy: | |
4271 | case bp_shlib_event: | |
4272 | case bp_thread_event: | |
4273 | case bp_overlay_event: | |
4274 | case bp_catch_load: | |
4275 | case bp_catch_unload: | |
4276 | loc->loc_type = bp_loc_software_breakpoint; | |
4277 | break; | |
4278 | case bp_hardware_breakpoint: | |
4279 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4280 | break; | |
4281 | case bp_hardware_watchpoint: | |
4282 | case bp_read_watchpoint: | |
4283 | case bp_access_watchpoint: | |
4284 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4285 | break; | |
4286 | case bp_watchpoint: | |
4287 | case bp_catch_fork: | |
4288 | case bp_catch_vfork: | |
4289 | case bp_catch_exec: | |
e049a4b5 DJ |
4290 | loc->loc_type = bp_loc_other; |
4291 | break; | |
4292 | default: | |
e2e0b3e5 | 4293 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4294 | } |
4295 | ||
7cc221ef DJ |
4296 | return loc; |
4297 | } | |
4298 | ||
fe3f5fa8 VP |
4299 | static void free_bp_location (struct bp_location *loc) |
4300 | { | |
4301 | if (loc->cond) | |
4302 | xfree (loc->cond); | |
74960c60 VP |
4303 | |
4304 | if (loc->function_name) | |
4305 | xfree (loc->function_name); | |
4306 | ||
fe3f5fa8 VP |
4307 | xfree (loc); |
4308 | } | |
4309 | ||
0d381245 VP |
4310 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4311 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4312 | |
c40e75cd | 4313 | static struct breakpoint * |
0d381245 | 4314 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4315 | { |
52f0bd74 | 4316 | struct breakpoint *b, *b1; |
c906108c SS |
4317 | |
4318 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4319 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4320 | |
4d28f7a8 | 4321 | b->type = bptype; |
c906108c SS |
4322 | b->language = current_language->la_language; |
4323 | b->input_radix = input_radix; | |
4324 | b->thread = -1; | |
b5de0fa7 | 4325 | b->enable_state = bp_enabled; |
c906108c SS |
4326 | b->next = 0; |
4327 | b->silent = 0; | |
4328 | b->ignore_count = 0; | |
4329 | b->commands = NULL; | |
818dd999 | 4330 | b->frame_id = null_frame_id; |
c906108c SS |
4331 | b->dll_pathname = NULL; |
4332 | b->triggered_dll_pathname = NULL; | |
4333 | b->forked_inferior_pid = 0; | |
4334 | b->exec_pathname = NULL; | |
3086aeae | 4335 | b->ops = NULL; |
0d381245 | 4336 | b->condition_not_parsed = 0; |
c906108c SS |
4337 | |
4338 | /* Add this breakpoint to the end of the chain | |
4339 | so that a list of breakpoints will come out in order | |
4340 | of increasing numbers. */ | |
4341 | ||
4342 | b1 = breakpoint_chain; | |
4343 | if (b1 == 0) | |
4344 | breakpoint_chain = b; | |
4345 | else | |
4346 | { | |
4347 | while (b1->next) | |
4348 | b1 = b1->next; | |
4349 | b1->next = b; | |
4350 | } | |
0d381245 VP |
4351 | return b; |
4352 | } | |
4353 | ||
4354 | /* Initialize loc->function_name. */ | |
4355 | static void | |
4356 | set_breakpoint_location_function (struct bp_location *loc) | |
4357 | { | |
4358 | if (loc->owner->type == bp_breakpoint | |
4359 | || loc->owner->type == bp_hardware_breakpoint) | |
4360 | { | |
4361 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4362 | NULL, NULL); | |
4363 | if (loc->function_name) | |
4364 | loc->function_name = xstrdup (loc->function_name); | |
4365 | } | |
4366 | } | |
4367 | ||
4368 | /* set_raw_breakpoint is a low level routine for allocating and | |
4369 | partially initializing a breakpoint of type BPTYPE. The newly | |
4370 | created breakpoint's address, section, source file name, and line | |
4371 | number are provided by SAL. The newly created and partially | |
4372 | initialized breakpoint is added to the breakpoint chain and | |
4373 | is also returned as the value of this function. | |
4374 | ||
4375 | It is expected that the caller will complete the initialization of | |
4376 | the newly created breakpoint struct as well as output any status | |
4377 | information regarding the creation of a new breakpoint. In | |
4378 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4379 | number! Care should be taken to not allow an error to occur | |
4380 | prior to completing the initialization of the breakpoint. If this | |
4381 | should happen, a bogus breakpoint will be left on the chain. */ | |
4382 | ||
4383 | struct breakpoint * | |
4384 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4385 | { | |
4386 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4387 | CORE_ADDR adjusted_address; | |
4388 | ||
4389 | /* Adjust the breakpoint's address prior to allocating a location. | |
4390 | Once we call allocate_bp_location(), that mostly uninitialized | |
4391 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4392 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4393 | not want its scan of the location chain to find a breakpoint and |
4394 | location that's only been partially initialized. */ | |
4395 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4396 | ||
4397 | b->loc = allocate_bp_location (b, bptype); | |
4398 | b->loc->requested_address = sal.pc; | |
4399 | b->loc->address = adjusted_address; | |
4400 | ||
4401 | if (sal.symtab == NULL) | |
4402 | b->source_file = NULL; | |
4403 | else | |
4404 | b->source_file = savestring (sal.symtab->filename, | |
4405 | strlen (sal.symtab->filename)); | |
4406 | b->loc->section = sal.section; | |
4407 | b->line_number = sal.line; | |
4408 | ||
4409 | set_breakpoint_location_function (b->loc); | |
c906108c | 4410 | |
c906108c SS |
4411 | breakpoints_changed (); |
4412 | ||
4413 | return b; | |
4414 | } | |
4415 | ||
c2c6d25f JM |
4416 | |
4417 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4418 | instruction, hard-wired into the inferior's code. */ | |
4419 | void | |
4420 | make_breakpoint_permanent (struct breakpoint *b) | |
4421 | { | |
0d381245 | 4422 | struct bp_location *bl; |
b5de0fa7 | 4423 | b->enable_state = bp_permanent; |
c2c6d25f | 4424 | |
0d381245 VP |
4425 | /* By definition, permanent breakpoints are already present in the code. |
4426 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4427 | is called in just one place, so it's hard to say if it's reasonable | |
4428 | to have permanent breakpoint with multiple locations or not, | |
4429 | but it's easy to implmement. */ | |
4430 | for (bl = b->loc; bl; bl = bl->next) | |
4431 | bl->inserted = 1; | |
c2c6d25f JM |
4432 | } |
4433 | ||
1900040c MS |
4434 | static struct breakpoint * |
4435 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4436 | { | |
4437 | static int internal_breakpoint_number = -1; | |
4438 | struct symtab_and_line sal; | |
4439 | struct breakpoint *b; | |
4440 | ||
fe39c653 | 4441 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4442 | |
4443 | sal.pc = address; | |
4444 | sal.section = find_pc_overlay (sal.pc); | |
4445 | ||
4446 | b = set_raw_breakpoint (sal, type); | |
4447 | b->number = internal_breakpoint_number--; | |
4448 | b->disposition = disp_donttouch; | |
4449 | ||
4450 | return b; | |
4451 | } | |
4452 | ||
c906108c SS |
4453 | |
4454 | static void | |
fba45db2 | 4455 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4456 | { |
c906108c | 4457 | struct breakpoint *b; |
1900040c | 4458 | struct minimal_symbol *m; |
c906108c | 4459 | |
611c83ae PA |
4460 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4461 | return; | |
4462 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
74960c60 | 4463 | update_global_location_list (); |
c906108c SS |
4464 | } |
4465 | ||
53a5351d JM |
4466 | /* Call this routine when stepping and nexting to enable a breakpoint |
4467 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4468 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4469 | ||
4470 | void | |
611c83ae | 4471 | set_longjmp_breakpoint (void) |
c906108c | 4472 | { |
52f0bd74 | 4473 | struct breakpoint *b; |
c906108c | 4474 | |
611c83ae | 4475 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4476 | { |
611c83ae PA |
4477 | create_longjmp_breakpoint ("longjmp"); |
4478 | create_longjmp_breakpoint ("_longjmp"); | |
4479 | create_longjmp_breakpoint ("siglongjmp"); | |
4480 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4481 | } |
c906108c SS |
4482 | } |
4483 | ||
611c83ae | 4484 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4485 | void |
611c83ae | 4486 | delete_longjmp_breakpoint (int thread) |
c906108c | 4487 | { |
611c83ae | 4488 | struct breakpoint *b, *temp; |
c906108c | 4489 | |
611c83ae PA |
4490 | ALL_BREAKPOINTS_SAFE (b, temp) |
4491 | if (b->type == bp_longjmp) | |
4492 | { | |
4493 | if (b->thread == thread) | |
4494 | delete_breakpoint (b); | |
4495 | } | |
c906108c SS |
4496 | } |
4497 | ||
1900040c MS |
4498 | static void |
4499 | create_overlay_event_breakpoint (char *func_name) | |
4500 | { | |
4501 | struct breakpoint *b; | |
4502 | struct minimal_symbol *m; | |
4503 | ||
5520a790 | 4504 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4505 | return; |
4506 | ||
4507 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4508 | bp_overlay_event); | |
4509 | b->addr_string = xstrdup (func_name); | |
4510 | ||
4511 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4512 | { |
4513 | b->enable_state = bp_enabled; | |
4514 | overlay_events_enabled = 1; | |
4515 | } | |
1900040c | 4516 | else |
c02f5703 MS |
4517 | { |
4518 | b->enable_state = bp_disabled; | |
4519 | overlay_events_enabled = 0; | |
4520 | } | |
74960c60 | 4521 | update_global_location_list (); |
1900040c MS |
4522 | } |
4523 | ||
4524 | void | |
4525 | enable_overlay_breakpoints (void) | |
4526 | { | |
52f0bd74 | 4527 | struct breakpoint *b; |
1900040c MS |
4528 | |
4529 | ALL_BREAKPOINTS (b) | |
4530 | if (b->type == bp_overlay_event) | |
4531 | { | |
4532 | b->enable_state = bp_enabled; | |
74960c60 | 4533 | update_global_location_list (); |
c02f5703 | 4534 | overlay_events_enabled = 1; |
1900040c MS |
4535 | } |
4536 | } | |
4537 | ||
4538 | void | |
4539 | disable_overlay_breakpoints (void) | |
4540 | { | |
52f0bd74 | 4541 | struct breakpoint *b; |
1900040c MS |
4542 | |
4543 | ALL_BREAKPOINTS (b) | |
4544 | if (b->type == bp_overlay_event) | |
4545 | { | |
4546 | b->enable_state = bp_disabled; | |
74960c60 | 4547 | update_global_location_list (); |
c02f5703 | 4548 | overlay_events_enabled = 0; |
1900040c MS |
4549 | } |
4550 | } | |
4551 | ||
c4093a6a | 4552 | struct breakpoint * |
fba45db2 | 4553 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4554 | { |
4555 | struct breakpoint *b; | |
c4093a6a | 4556 | |
1900040c | 4557 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4558 | |
b5de0fa7 | 4559 | b->enable_state = bp_enabled; |
c4093a6a | 4560 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4561 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4562 | |
74960c60 VP |
4563 | update_global_location_list_nothrow (); |
4564 | ||
c4093a6a JM |
4565 | return b; |
4566 | } | |
4567 | ||
4568 | void | |
4569 | remove_thread_event_breakpoints (void) | |
4570 | { | |
4571 | struct breakpoint *b, *temp; | |
4572 | ||
4573 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4574 | if (b->type == bp_thread_event) | |
4575 | delete_breakpoint (b); | |
4576 | } | |
4577 | ||
0101ce28 JJ |
4578 | struct captured_parse_breakpoint_args |
4579 | { | |
4580 | char **arg_p; | |
4581 | struct symtabs_and_lines *sals_p; | |
4582 | char ***addr_string_p; | |
4583 | int *not_found_ptr; | |
4584 | }; | |
4585 | ||
4586 | struct lang_and_radix | |
4587 | { | |
4588 | enum language lang; | |
4589 | int radix; | |
4590 | }; | |
4591 | ||
0101ce28 | 4592 | |
cae688ec JJ |
4593 | void |
4594 | remove_solib_event_breakpoints (void) | |
4595 | { | |
4596 | struct breakpoint *b, *temp; | |
4597 | ||
4598 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4599 | if (b->type == bp_shlib_event) | |
4600 | delete_breakpoint (b); | |
4601 | } | |
4602 | ||
4603 | struct breakpoint * | |
4604 | create_solib_event_breakpoint (CORE_ADDR address) | |
4605 | { | |
4606 | struct breakpoint *b; | |
4607 | ||
4608 | b = create_internal_breakpoint (address, bp_shlib_event); | |
74960c60 | 4609 | update_global_location_list_nothrow (); |
cae688ec JJ |
4610 | return b; |
4611 | } | |
4612 | ||
4613 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4614 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4615 | ||
4616 | void | |
cb851954 | 4617 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4618 | { |
0d381245 | 4619 | struct bp_location *loc; |
cae688ec JJ |
4620 | int disabled_shlib_breaks = 0; |
4621 | ||
0d381245 | 4622 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4623 | { |
0d381245 VP |
4624 | struct breakpoint *b = loc->owner; |
4625 | /* We apply the check to all breakpoints, including disabled | |
4626 | for those with loc->duplicate set. This is so that when breakpoint | |
4627 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4628 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4629 | to insert those breakpoints and fail. */ | |
a77053c2 | 4630 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4631 | && !loc->shlib_disabled |
a77053c2 | 4632 | #ifdef PC_SOLIB |
0d381245 | 4633 | && PC_SOLIB (loc->address) |
a77053c2 | 4634 | #else |
0d381245 | 4635 | && solib_address (loc->address) |
a77053c2 MK |
4636 | #endif |
4637 | ) | |
0d381245 VP |
4638 | { |
4639 | loc->shlib_disabled = 1; | |
4640 | } | |
cae688ec JJ |
4641 | } |
4642 | } | |
4643 | ||
84acb35a JJ |
4644 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4645 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4646 | ||
75149521 | 4647 | static void |
84acb35a JJ |
4648 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4649 | { | |
0d381245 | 4650 | struct bp_location *loc; |
84acb35a JJ |
4651 | int disabled_shlib_breaks = 0; |
4652 | ||
0d381245 | 4653 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4654 | { |
0d381245 VP |
4655 | struct breakpoint *b = loc->owner; |
4656 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4657 | || loc->loc_type == bp_loc_software_breakpoint) | |
4658 | && !loc->shlib_disabled) | |
84acb35a | 4659 | { |
a77053c2 | 4660 | #ifdef PC_SOLIB |
0d381245 | 4661 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4662 | #else |
0d381245 | 4663 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4664 | #endif |
4665 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4666 | { |
0d381245 | 4667 | loc->shlib_disabled = 1; |
84acb35a JJ |
4668 | /* At this point, we cannot rely on remove_breakpoint |
4669 | succeeding so we must mark the breakpoint as not inserted | |
4670 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4671 | loc->inserted = 0; |
84acb35a JJ |
4672 | if (!disabled_shlib_breaks) |
4673 | { | |
4674 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4675 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4676 | so_name); |
4677 | } | |
4678 | disabled_shlib_breaks = 1; | |
4679 | } | |
4680 | } | |
4681 | } | |
84acb35a JJ |
4682 | } |
4683 | ||
c906108c | 4684 | static void |
fba45db2 KB |
4685 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4686 | enum bptype bp_kind) | |
c906108c | 4687 | { |
c5aa993b JM |
4688 | struct symtab_and_line sal; |
4689 | struct breakpoint *b; | |
4690 | int thread = -1; /* All threads. */ | |
4691 | ||
fe39c653 | 4692 | init_sal (&sal); |
c906108c SS |
4693 | sal.pc = 0; |
4694 | sal.symtab = NULL; | |
4695 | sal.line = 0; | |
c5aa993b | 4696 | |
4d28f7a8 | 4697 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4698 | set_breakpoint_count (breakpoint_count + 1); |
4699 | b->number = breakpoint_count; | |
53a5351d JM |
4700 | b->cond_string = (cond_string == NULL) ? |
4701 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4702 | b->thread = thread; |
4703 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4704 | b->enable_state = bp_enabled; |
4705 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
c906108c | 4706 | b->forked_inferior_pid = 0; |
74960c60 VP |
4707 | update_global_location_list (); |
4708 | ||
c5aa993b | 4709 | |
c906108c SS |
4710 | mention (b); |
4711 | } | |
4712 | ||
9b70b993 | 4713 | static void |
fba45db2 | 4714 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4715 | { |
4716 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4717 | } | |
c5aa993b | 4718 | |
9b70b993 | 4719 | static void |
fba45db2 | 4720 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4721 | { |
4722 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4723 | } | |
4724 | ||
9b70b993 | 4725 | static void |
fba45db2 | 4726 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4727 | { |
c5aa993b JM |
4728 | struct symtab_and_line sal; |
4729 | struct breakpoint *b; | |
4730 | int thread = -1; /* All threads. */ | |
c906108c | 4731 | |
fe39c653 | 4732 | init_sal (&sal); |
c906108c SS |
4733 | sal.pc = 0; |
4734 | sal.symtab = NULL; | |
4735 | sal.line = 0; | |
4736 | ||
4d28f7a8 | 4737 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4738 | set_breakpoint_count (breakpoint_count + 1); |
4739 | b->number = breakpoint_count; | |
53a5351d JM |
4740 | b->cond_string = (cond_string == NULL) ? |
4741 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4742 | b->thread = thread; |
4743 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4744 | b->enable_state = bp_enabled; |
4745 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
74960c60 | 4746 | update_global_location_list (); |
c906108c | 4747 | |
c906108c SS |
4748 | mention (b); |
4749 | } | |
4750 | ||
4751 | static int | |
fba45db2 | 4752 | hw_breakpoint_used_count (void) |
c906108c | 4753 | { |
52f0bd74 | 4754 | struct breakpoint *b; |
c906108c SS |
4755 | int i = 0; |
4756 | ||
4757 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4758 | { |
b5de0fa7 | 4759 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4760 | i++; |
4761 | } | |
c906108c SS |
4762 | |
4763 | return i; | |
4764 | } | |
4765 | ||
4766 | static int | |
fba45db2 | 4767 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4768 | { |
52f0bd74 | 4769 | struct breakpoint *b; |
c906108c SS |
4770 | int i = 0; |
4771 | ||
4772 | *other_type_used = 0; | |
4773 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4774 | { |
468d015d | 4775 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4776 | { |
4777 | if (b->type == type) | |
4778 | i++; | |
4779 | else if ((b->type == bp_hardware_watchpoint || | |
4780 | b->type == bp_read_watchpoint || | |
468d015d | 4781 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4782 | *other_type_used = 1; |
4783 | } | |
4784 | } | |
c906108c SS |
4785 | return i; |
4786 | } | |
4787 | ||
c906108c | 4788 | void |
fba45db2 | 4789 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4790 | { |
c5aa993b | 4791 | struct breakpoint *b; |
c906108c SS |
4792 | |
4793 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4794 | { |
4795 | if (((b->type == bp_watchpoint) | |
4796 | || (b->type == bp_hardware_watchpoint) | |
4797 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4798 | || (b->type == bp_access_watchpoint)) |
468d015d | 4799 | && breakpoint_enabled (b)) |
c5aa993b | 4800 | { |
b5de0fa7 | 4801 | b->enable_state = bp_call_disabled; |
74960c60 | 4802 | update_global_location_list (); |
c5aa993b JM |
4803 | } |
4804 | } | |
c906108c SS |
4805 | } |
4806 | ||
4807 | void | |
fba45db2 | 4808 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4809 | { |
c5aa993b | 4810 | struct breakpoint *b; |
c906108c SS |
4811 | |
4812 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4813 | { |
4814 | if (((b->type == bp_watchpoint) | |
4815 | || (b->type == bp_hardware_watchpoint) | |
4816 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4817 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4818 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4819 | { |
b5de0fa7 | 4820 | b->enable_state = bp_enabled; |
74960c60 | 4821 | update_global_location_list (); |
c5aa993b JM |
4822 | } |
4823 | } | |
c906108c SS |
4824 | } |
4825 | ||
4826 | ||
4827 | /* Set a breakpoint that will evaporate an end of command | |
4828 | at address specified by SAL. | |
4829 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4830 | ||
4831 | struct breakpoint * | |
818dd999 | 4832 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4833 | enum bptype type) |
c906108c | 4834 | { |
52f0bd74 | 4835 | struct breakpoint *b; |
4d28f7a8 | 4836 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4837 | b->enable_state = bp_enabled; |
4838 | b->disposition = disp_donttouch; | |
818dd999 | 4839 | b->frame_id = frame_id; |
c906108c SS |
4840 | |
4841 | /* If we're debugging a multi-threaded program, then we | |
4842 | want momentary breakpoints to be active in only a | |
4843 | single thread of control. */ | |
39f77062 KB |
4844 | if (in_thread_list (inferior_ptid)) |
4845 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4846 | |
74960c60 VP |
4847 | update_global_location_list_nothrow (); |
4848 | ||
c906108c SS |
4849 | return b; |
4850 | } | |
611c83ae PA |
4851 | |
4852 | struct breakpoint * | |
4853 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4854 | { | |
4855 | struct symtab_and_line sal; | |
4856 | ||
4857 | sal = find_pc_line (pc, 0); | |
4858 | sal.pc = pc; | |
4859 | sal.section = find_pc_overlay (pc); | |
4860 | sal.explicit_pc = 1; | |
4861 | ||
4862 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4863 | } | |
c906108c | 4864 | \f |
c5aa993b | 4865 | |
c906108c SS |
4866 | /* Tell the user we have just set a breakpoint B. */ |
4867 | ||
4868 | static void | |
fba45db2 | 4869 | mention (struct breakpoint *b) |
c906108c SS |
4870 | { |
4871 | int say_where = 0; | |
3b31d625 | 4872 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4873 | struct ui_stream *stb; |
4874 | ||
4875 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4876 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4877 | |
9a4105ab AC |
4878 | /* FIXME: This is misplaced; mention() is called by things (like |
4879 | hitting a watchpoint) other than breakpoint creation. It should | |
4880 | be possible to clean this up and at the same time replace the | |
4881 | random calls to breakpoint_changed with this hook, as has already | |
4882 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4883 | if (deprecated_create_breakpoint_hook) | |
4884 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4885 | breakpoint_create_event (b->number); |
c906108c | 4886 | |
3086aeae DJ |
4887 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4888 | b->ops->print_mention (b); | |
4889 | else | |
4890 | switch (b->type) | |
4891 | { | |
4892 | case bp_none: | |
a3f17187 | 4893 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4894 | break; |
4895 | case bp_watchpoint: | |
4896 | ui_out_text (uiout, "Watchpoint "); | |
4897 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4898 | ui_out_field_int (uiout, "number", b->number); | |
4899 | ui_out_text (uiout, ": "); | |
4900 | print_expression (b->exp, stb->stream); | |
4901 | ui_out_field_stream (uiout, "exp", stb); | |
4902 | do_cleanups (ui_out_chain); | |
4903 | break; | |
4904 | case bp_hardware_watchpoint: | |
4905 | ui_out_text (uiout, "Hardware watchpoint "); | |
4906 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4907 | ui_out_field_int (uiout, "number", b->number); | |
4908 | ui_out_text (uiout, ": "); | |
4909 | print_expression (b->exp, stb->stream); | |
4910 | ui_out_field_stream (uiout, "exp", stb); | |
4911 | do_cleanups (ui_out_chain); | |
4912 | break; | |
4913 | case bp_read_watchpoint: | |
4914 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4915 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4916 | ui_out_field_int (uiout, "number", b->number); | |
4917 | ui_out_text (uiout, ": "); | |
4918 | print_expression (b->exp, stb->stream); | |
4919 | ui_out_field_stream (uiout, "exp", stb); | |
4920 | do_cleanups (ui_out_chain); | |
4921 | break; | |
4922 | case bp_access_watchpoint: | |
4923 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4924 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4925 | ui_out_field_int (uiout, "number", b->number); | |
4926 | ui_out_text (uiout, ": "); | |
4927 | print_expression (b->exp, stb->stream); | |
4928 | ui_out_field_stream (uiout, "exp", stb); | |
4929 | do_cleanups (ui_out_chain); | |
4930 | break; | |
4931 | case bp_breakpoint: | |
4932 | if (ui_out_is_mi_like_p (uiout)) | |
4933 | { | |
4934 | say_where = 0; | |
4935 | break; | |
4936 | } | |
2cec12e5 AR |
4937 | if (b->disposition == disp_del) |
4938 | printf_filtered (_("Temporary breakpoint")); | |
4939 | else | |
4940 | printf_filtered (_("Breakpoint")); | |
4941 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4942 | say_where = 1; |
4943 | break; | |
4944 | case bp_hardware_breakpoint: | |
4945 | if (ui_out_is_mi_like_p (uiout)) | |
4946 | { | |
4947 | say_where = 0; | |
4948 | break; | |
4949 | } | |
a3f17187 | 4950 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4951 | say_where = 1; |
4952 | break; | |
4953 | case bp_catch_load: | |
4954 | case bp_catch_unload: | |
a3f17187 | 4955 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4956 | b->number, |
4957 | (b->type == bp_catch_load) ? "load" : "unload", | |
4958 | (b->dll_pathname != NULL) ? | |
4959 | b->dll_pathname : "<any library>"); | |
4960 | break; | |
4961 | case bp_catch_fork: | |
4962 | case bp_catch_vfork: | |
a3f17187 | 4963 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4964 | b->number, |
4965 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4966 | break; | |
4967 | case bp_catch_exec: | |
a3f17187 | 4968 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4969 | b->number); |
4970 | break; | |
3086aeae DJ |
4971 | |
4972 | case bp_until: | |
4973 | case bp_finish: | |
4974 | case bp_longjmp: | |
4975 | case bp_longjmp_resume: | |
4976 | case bp_step_resume: | |
3086aeae DJ |
4977 | case bp_call_dummy: |
4978 | case bp_watchpoint_scope: | |
4979 | case bp_shlib_event: | |
4980 | case bp_thread_event: | |
4981 | case bp_overlay_event: | |
4982 | break; | |
4983 | } | |
c906108c | 4984 | |
c906108c SS |
4985 | if (say_where) |
4986 | { | |
a3f17187 AC |
4987 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
4988 | single string. */ | |
0d381245 | 4989 | if (b->loc == NULL) |
c906108c | 4990 | { |
a3f17187 | 4991 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
4992 | } |
4993 | else | |
4994 | { | |
4995 | if (addressprint || b->source_file == NULL) | |
4996 | { | |
4997 | printf_filtered (" at "); | |
ed49a04f | 4998 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
4999 | } |
5000 | if (b->source_file) | |
5001 | printf_filtered (": file %s, line %d.", | |
5002 | b->source_file, b->line_number); | |
0d381245 VP |
5003 | |
5004 | if (b->loc->next) | |
5005 | { | |
5006 | struct bp_location *loc = b->loc; | |
5007 | int n = 0; | |
5008 | for (; loc; loc = loc->next) | |
5009 | ++n; | |
5010 | printf_filtered (" (%d locations)", n); | |
5011 | } | |
5012 | ||
c906108c | 5013 | } |
c906108c | 5014 | } |
8b93c638 | 5015 | do_cleanups (old_chain); |
9dc5e2a9 | 5016 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5017 | return; |
c906108c SS |
5018 | printf_filtered ("\n"); |
5019 | } | |
c906108c | 5020 | \f |
c5aa993b | 5021 | |
0d381245 VP |
5022 | static struct bp_location * |
5023 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5024 | const struct symtab_and_line *sal) | |
5025 | { | |
5026 | struct bp_location *loc, **tmp; | |
5027 | ||
5028 | loc = allocate_bp_location (b, bptype); | |
5029 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5030 | ; | |
5031 | *tmp = loc; | |
5032 | loc->requested_address = sal->pc; | |
5033 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5034 | bptype); | |
5035 | loc->section = sal->section; | |
5036 | ||
5037 | set_breakpoint_location_function (loc); | |
5038 | return loc; | |
5039 | } | |
c3f6f71d | 5040 | |
018d34a4 VP |
5041 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5042 | as textual description of the location, and COND_STRING | |
db107f19 | 5043 | as condition expression. */ |
018d34a4 VP |
5044 | |
5045 | static void | |
0d381245 | 5046 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5047 | char *cond_string, |
5048 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5049 | int thread, int ignore_count, |
5050 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5051 | { |
0d381245 VP |
5052 | struct breakpoint *b = NULL; |
5053 | int i; | |
018d34a4 VP |
5054 | |
5055 | if (type == bp_hardware_breakpoint) | |
5056 | { | |
5057 | int i = hw_breakpoint_used_count (); | |
5058 | int target_resources_ok = | |
5059 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5060 | i + 1, 0); | |
5061 | if (target_resources_ok == 0) | |
5062 | error (_("No hardware breakpoint support in the target.")); | |
5063 | else if (target_resources_ok < 0) | |
5064 | error (_("Hardware breakpoints used exceeds limit.")); | |
5065 | } | |
5066 | ||
0d381245 VP |
5067 | for (i = 0; i < sals.nelts; ++i) |
5068 | { | |
5069 | struct symtab_and_line sal = sals.sals[i]; | |
5070 | struct bp_location *loc; | |
5071 | ||
5072 | if (from_tty) | |
5073 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5074 | ||
5075 | if (i == 0) | |
5076 | { | |
5077 | b = set_raw_breakpoint (sal, type); | |
5078 | set_breakpoint_count (breakpoint_count + 1); | |
5079 | b->number = breakpoint_count; | |
5080 | b->thread = thread; | |
018d34a4 | 5081 | |
0d381245 VP |
5082 | b->cond_string = cond_string; |
5083 | b->ignore_count = ignore_count; | |
5084 | b->enable_state = bp_enabled; | |
5085 | b->disposition = disposition; | |
018d34a4 | 5086 | |
0d381245 VP |
5087 | loc = b->loc; |
5088 | } | |
5089 | else | |
018d34a4 | 5090 | { |
0d381245 VP |
5091 | loc = add_location_to_breakpoint (b, type, &sal); |
5092 | } | |
5093 | ||
5094 | if (b->cond_string) | |
5095 | { | |
5096 | char *arg = b->cond_string; | |
d32a6982 | 5097 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5098 | if (*arg) |
db107f19 | 5099 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5100 | } |
0d381245 | 5101 | } |
018d34a4 VP |
5102 | |
5103 | if (addr_string) | |
5104 | b->addr_string = addr_string; | |
5105 | else | |
5106 | /* addr_string has to be used or breakpoint_re_set will delete | |
5107 | me. */ | |
5108 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5109 | ||
604133b5 | 5110 | b->ops = ops; |
018d34a4 VP |
5111 | mention (b); |
5112 | } | |
5113 | ||
ed0616c6 VP |
5114 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5115 | elements to fill the void space. */ | |
5116 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5117 | { | |
5118 | int i = index_to_remove+1; | |
5119 | int last_index = sal->nelts-1; | |
5120 | ||
5121 | for (;i <= last_index; ++i) | |
5122 | sal->sals[i-1] = sal->sals[i]; | |
5123 | ||
5124 | --(sal->nelts); | |
5125 | } | |
5126 | ||
5127 | /* If appropriate, obtains all sals that correspond | |
5128 | to the same file and line as SAL. This is done | |
5129 | only if SAL does not have explicit PC and has | |
5130 | line and file information. If we got just a single | |
5131 | expanded sal, return the original. | |
5132 | ||
5133 | Otherwise, if SAL.explicit_line is not set, filter out | |
5134 | all sals for which the name of enclosing function | |
5135 | is different from SAL. This makes sure that if we have | |
5136 | breakpoint originally set in template instantiation, say | |
5137 | foo<int>(), we won't expand SAL to locations at the same | |
5138 | line in all existing instantiations of 'foo'. | |
5139 | ||
5140 | */ | |
5141 | struct symtabs_and_lines | |
5142 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5143 | { | |
5144 | struct symtabs_and_lines expanded; | |
5145 | CORE_ADDR original_pc = sal.pc; | |
5146 | char *original_function = NULL; | |
5147 | int found; | |
5148 | int i; | |
5149 | ||
5150 | /* If we have explicit pc, don't expand. | |
5151 | If we have no line number, we can't expand. */ | |
5152 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5153 | { | |
5154 | expanded.nelts = 1; | |
5155 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5156 | expanded.sals[0] = sal; | |
5157 | return expanded; | |
5158 | } | |
5159 | ||
5160 | sal.pc = 0; | |
5161 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5162 | ||
5163 | expanded = expand_line_sal (sal); | |
5164 | if (expanded.nelts == 1) | |
5165 | { | |
5166 | /* We had one sal, we got one sal. Without futher | |
5167 | processing, just return the original sal. */ | |
5168 | xfree (expanded.sals); | |
5169 | expanded.nelts = 1; | |
5170 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5171 | sal.pc = original_pc; | |
5172 | expanded.sals[0] = sal; | |
5173 | return expanded; | |
5174 | } | |
5175 | ||
5176 | if (!sal.explicit_line) | |
5177 | { | |
5178 | CORE_ADDR func_addr, func_end; | |
5179 | for (i = 0; i < expanded.nelts; ++i) | |
5180 | { | |
5181 | CORE_ADDR pc = expanded.sals[i].pc; | |
5182 | char *this_function; | |
5183 | if (find_pc_partial_function (pc, &this_function, | |
5184 | &func_addr, &func_end)) | |
5185 | { | |
5186 | if (this_function && | |
5187 | strcmp (this_function, original_function) != 0) | |
5188 | { | |
5189 | remove_sal (&expanded, i); | |
5190 | --i; | |
5191 | } | |
5192 | else if (func_addr == pc) | |
5193 | { | |
5194 | /* We're at beginning of a function, and should | |
5195 | skip prologue. */ | |
5196 | struct symbol *sym = find_pc_function (pc); | |
5197 | if (sym) | |
5198 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5199 | else | |
5200 | expanded.sals[i].pc | |
5201 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5202 | } | |
5203 | } | |
5204 | } | |
5205 | } | |
5206 | ||
5207 | ||
5208 | if (expanded.nelts <= 1) | |
5209 | { | |
5210 | /* This is un ugly workaround. If we get zero | |
5211 | expanded sals then something is really wrong. | |
5212 | Fix that by returnign the original sal. */ | |
5213 | xfree (expanded.sals); | |
5214 | expanded.nelts = 1; | |
5215 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5216 | sal.pc = original_pc; | |
5217 | expanded.sals[0] = sal; | |
5218 | return expanded; | |
5219 | } | |
5220 | ||
5221 | if (original_pc) | |
5222 | { | |
5223 | found = 0; | |
5224 | for (i = 0; i < expanded.nelts; ++i) | |
5225 | if (expanded.sals[i].pc == original_pc) | |
5226 | { | |
5227 | found = 1; | |
5228 | break; | |
5229 | } | |
5230 | gdb_assert (found); | |
5231 | } | |
5232 | ||
5233 | return expanded; | |
5234 | } | |
5235 | ||
018d34a4 VP |
5236 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5237 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5238 | value. COND_STRING, if not NULL, specified the condition to be | |
5239 | used for all breakpoints. Essentially the only case where | |
5240 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5241 | function. In that case, it's still not possible to specify | |
5242 | separate conditions for different overloaded functions, so | |
5243 | we take just a single condition string. | |
5244 | ||
c3f6f71d | 5245 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5246 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5247 | array contents). If the function fails (error() is called), the |
5248 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5249 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5250 | |
5251 | static void | |
c3f6f71d | 5252 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5253 | char *cond_string, |
c3f6f71d | 5254 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5255 | int thread, int ignore_count, |
5256 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5257 | { |
018d34a4 VP |
5258 | int i; |
5259 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5260 | { |
ed0616c6 VP |
5261 | struct symtabs_and_lines expanded = |
5262 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5263 | |
ed0616c6 | 5264 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5265 | cond_string, type, disposition, |
604133b5 | 5266 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5267 | } |
74960c60 VP |
5268 | |
5269 | update_global_location_list (); | |
c3f6f71d | 5270 | } |
c906108c | 5271 | |
c3f6f71d JM |
5272 | /* Parse ARG which is assumed to be a SAL specification possibly |
5273 | followed by conditionals. On return, SALS contains an array of SAL | |
5274 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5275 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5276 | |
b9362cc7 | 5277 | static void |
c3f6f71d JM |
5278 | parse_breakpoint_sals (char **address, |
5279 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5280 | char ***addr_string, |
5281 | int *not_found_ptr) | |
c3f6f71d JM |
5282 | { |
5283 | char *addr_start = *address; | |
5284 | *addr_string = NULL; | |
5285 | /* If no arg given, or if first arg is 'if ', use the default | |
5286 | breakpoint. */ | |
5287 | if ((*address) == NULL | |
5288 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5289 | { |
5290 | if (default_breakpoint_valid) | |
5291 | { | |
c3f6f71d | 5292 | struct symtab_and_line sal; |
fe39c653 | 5293 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5294 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5295 | xmalloc (sizeof (struct symtab_and_line)); |
5296 | sal.pc = default_breakpoint_address; | |
5297 | sal.line = default_breakpoint_line; | |
5298 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5299 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5300 | sals->sals[0] = sal; |
5301 | sals->nelts = 1; | |
c906108c SS |
5302 | } |
5303 | else | |
8a3fe4f8 | 5304 | error (_("No default breakpoint address now.")); |
c906108c SS |
5305 | } |
5306 | else | |
5307 | { | |
c906108c | 5308 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5309 | current_source_symtab (which is decode_line_1's default). This |
5310 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5311 | leaving default_breakpoint_* alone. |
5312 | ObjC: However, don't match an Objective-C method name which | |
5313 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5314 | |
c214a6fd | 5315 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5316 | |
c906108c | 5317 | if (default_breakpoint_valid |
0378c332 | 5318 | && (!cursal.symtab |
1aeae86e AF |
5319 | || ((strchr ("+-", (*address)[0]) != NULL) |
5320 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5321 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5322 | default_breakpoint_line, addr_string, |
5323 | not_found_ptr); | |
c906108c | 5324 | else |
0101ce28 JJ |
5325 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5326 | addr_string, not_found_ptr); | |
c906108c | 5327 | } |
c3f6f71d JM |
5328 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5329 | if (sals->nelts > 0 && *addr_string == NULL) | |
5330 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5331 | if (addr_start != (*address)) | |
c906108c | 5332 | { |
c3f6f71d JM |
5333 | int i; |
5334 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5335 | { |
c3f6f71d JM |
5336 | /* Add the string if not present. */ |
5337 | if ((*addr_string)[i] == NULL) | |
5338 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5339 | } |
5340 | } | |
c3f6f71d | 5341 | } |
c906108c | 5342 | |
c906108c | 5343 | |
c3f6f71d JM |
5344 | /* Convert each SAL into a real PC. Verify that the PC can be |
5345 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5346 | |
b9362cc7 | 5347 | static void |
c3f6f71d JM |
5348 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5349 | char *address) | |
5350 | { | |
5351 | int i; | |
5352 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5353 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5354 | } |
5355 | ||
05ff989b | 5356 | static void |
0101ce28 JJ |
5357 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5358 | { | |
5359 | struct captured_parse_breakpoint_args *args = data; | |
5360 | ||
5361 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5362 | args->not_found_ptr); | |
0101ce28 JJ |
5363 | } |
5364 | ||
018d34a4 VP |
5365 | /* Given TOK, a string specification of condition and thread, as |
5366 | accepted by the 'break' command, extract the condition | |
5367 | string and thread number and set *COND_STRING and *THREAD. | |
5368 | PC identifies the context at which the condition should be parsed. | |
5369 | If no condition is found, *COND_STRING is set to NULL. | |
5370 | If no thread is found, *THREAD is set to -1. */ | |
5371 | static void | |
5372 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5373 | char **cond_string, int *thread) | |
5374 | { | |
5375 | *cond_string = NULL; | |
5376 | *thread = -1; | |
5377 | while (tok && *tok) | |
5378 | { | |
5379 | char *end_tok; | |
5380 | int toklen; | |
5381 | char *cond_start = NULL; | |
5382 | char *cond_end = NULL; | |
5383 | while (*tok == ' ' || *tok == '\t') | |
5384 | tok++; | |
5385 | ||
5386 | end_tok = tok; | |
5387 | ||
5388 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5389 | end_tok++; | |
5390 | ||
5391 | toklen = end_tok - tok; | |
5392 | ||
5393 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5394 | { | |
5395 | tok = cond_start = end_tok + 1; | |
5396 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5397 | cond_end = tok; | |
5398 | *cond_string = savestring (cond_start, | |
5399 | cond_end - cond_start); | |
5400 | } | |
5401 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5402 | { | |
5403 | char *tmptok; | |
5404 | ||
5405 | tok = end_tok + 1; | |
5406 | tmptok = tok; | |
5407 | *thread = strtol (tok, &tok, 0); | |
5408 | if (tok == tmptok) | |
5409 | error (_("Junk after thread keyword.")); | |
5410 | if (!valid_thread_id (*thread)) | |
5411 | error (_("Unknown thread %d."), *thread); | |
5412 | } | |
5413 | else | |
5414 | error (_("Junk at end of arguments.")); | |
5415 | } | |
5416 | } | |
5417 | ||
72b2ff0e VP |
5418 | /* Set a breakpoint. This function is shared between |
5419 | CLI and MI functions for setting a breakpoint. | |
5420 | This function has two major modes of operations, | |
5421 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5422 | If non-zero, the function will parse arg, extracting | |
5423 | breakpoint location, address and thread. Otherwise, | |
5424 | ARG is just the location of breakpoint, with condition | |
5425 | and thread specified by the COND_STRING and THREAD | |
5426 | parameters. */ | |
0101ce28 | 5427 | |
98deb0da | 5428 | static void |
72b2ff0e | 5429 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5430 | int parse_condition_and_thread, |
5431 | int tempflag, int hardwareflag, | |
5432 | int ignore_count, | |
5433 | enum auto_boolean pending_break_support, | |
604133b5 | 5434 | struct breakpoint_ops *ops, |
60c46647 | 5435 | int from_tty) |
c3f6f71d | 5436 | { |
71fff37b | 5437 | struct gdb_exception e; |
c3f6f71d | 5438 | struct symtabs_and_lines sals; |
0101ce28 | 5439 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5440 | char *copy_arg; |
5441 | char *err_msg; | |
c3f6f71d JM |
5442 | char *addr_start = arg; |
5443 | char **addr_string; | |
5444 | struct cleanup *old_chain; | |
5445 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5446 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5447 | int i; |
0101ce28 | 5448 | int pending = 0; |
0101ce28 | 5449 | int not_found = 0; |
c3f6f71d | 5450 | |
c3f6f71d JM |
5451 | sals.sals = NULL; |
5452 | sals.nelts = 0; | |
5453 | addr_string = NULL; | |
c3f6f71d | 5454 | |
0101ce28 JJ |
5455 | parse_args.arg_p = &arg; |
5456 | parse_args.sals_p = &sals; | |
5457 | parse_args.addr_string_p = &addr_string; | |
5458 | parse_args.not_found_ptr = ¬_found; | |
5459 | ||
05ff989b AC |
5460 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5461 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5462 | |
5463 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5464 | switch (e.reason) |
0101ce28 | 5465 | { |
05ff989b | 5466 | case RETURN_QUIT: |
98deb0da | 5467 | throw_exception (e); |
05ff989b AC |
5468 | case RETURN_ERROR: |
5469 | switch (e.error) | |
0101ce28 | 5470 | { |
05ff989b | 5471 | case NOT_FOUND_ERROR: |
0101ce28 | 5472 | |
05ff989b AC |
5473 | /* If pending breakpoint support is turned off, throw |
5474 | error. */ | |
fa8d40ab JJ |
5475 | |
5476 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5477 | throw_exception (e); |
5478 | ||
5479 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5480 | |
05ff989b AC |
5481 | /* If pending breakpoint support is auto query and the user |
5482 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5483 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5484 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5485 | return; |
fa8d40ab | 5486 | |
05ff989b AC |
5487 | /* At this point, either the user was queried about setting |
5488 | a pending breakpoint and selected yes, or pending | |
5489 | breakpoint behavior is on and thus a pending breakpoint | |
5490 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5491 | copy_arg = xstrdup (addr_start); |
5492 | addr_string = ©_arg; | |
5493 | sals.nelts = 1; | |
5494 | sals.sals = &pending_sal; | |
5495 | pending_sal.pc = 0; | |
5496 | pending = 1; | |
05ff989b AC |
5497 | break; |
5498 | default: | |
98deb0da | 5499 | throw_exception (e); |
0101ce28 | 5500 | } |
05ff989b AC |
5501 | default: |
5502 | if (!sals.nelts) | |
98deb0da | 5503 | return; |
0101ce28 | 5504 | } |
c3f6f71d JM |
5505 | |
5506 | /* Create a chain of things that always need to be cleaned up. */ | |
5507 | old_chain = make_cleanup (null_cleanup, 0); | |
5508 | ||
0101ce28 JJ |
5509 | if (!pending) |
5510 | { | |
5511 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5512 | make_cleanup (xfree, sals.sals); | |
5513 | ||
5514 | /* Cleanup the addr_string array but not its contents. */ | |
5515 | make_cleanup (xfree, addr_string); | |
5516 | } | |
c3f6f71d | 5517 | |
c3f6f71d JM |
5518 | /* ----------------------------- SNIP ----------------------------- |
5519 | Anything added to the cleanup chain beyond this point is assumed | |
5520 | to be part of a breakpoint. If the breakpoint create succeeds | |
5521 | then the memory is not reclaimed. */ | |
5522 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5523 | ||
5524 | /* Mark the contents of the addr_string for cleanup. These go on | |
5525 | the breakpoint_chain and only occure if the breakpoint create | |
5526 | fails. */ | |
5527 | for (i = 0; i < sals.nelts; i++) | |
5528 | { | |
5529 | if (addr_string[i] != NULL) | |
b8c9b27d | 5530 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5531 | } |
5532 | ||
5533 | /* Resolve all line numbers to PC's and verify that the addresses | |
5534 | are ok for the target. */ | |
0101ce28 JJ |
5535 | if (!pending) |
5536 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5537 | |
5538 | /* Verify that condition can be parsed, before setting any | |
5539 | breakpoints. Allocate a separate condition expression for each | |
5540 | breakpoint. */ | |
0101ce28 | 5541 | if (!pending) |
c3f6f71d | 5542 | { |
2f069f6f | 5543 | if (parse_condition_and_thread) |
72b2ff0e VP |
5544 | { |
5545 | /* Here we only parse 'arg' to separate condition | |
5546 | from thread number, so parsing in context of first | |
5547 | sal is OK. When setting the breakpoint we'll | |
5548 | re-parse it in context of each sal. */ | |
5549 | cond_string = NULL; | |
5550 | thread = -1; | |
5551 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5552 | if (cond_string) | |
5553 | make_cleanup (xfree, cond_string); | |
5554 | } | |
2f069f6f | 5555 | else |
72b2ff0e VP |
5556 | { |
5557 | /* Create a private copy of condition string. */ | |
5558 | if (cond_string) | |
5559 | { | |
5560 | cond_string = xstrdup (cond_string); | |
5561 | make_cleanup (xfree, cond_string); | |
5562 | } | |
5563 | } | |
018d34a4 | 5564 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5565 | hardwareflag ? bp_hardware_breakpoint |
5566 | : bp_breakpoint, | |
5567 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5568 | thread, ignore_count, ops, from_tty); |
c906108c | 5569 | } |
0101ce28 JJ |
5570 | else |
5571 | { | |
fe3f5fa8 | 5572 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5573 | struct breakpoint *b; |
5574 | ||
0101ce28 JJ |
5575 | make_cleanup (xfree, copy_arg); |
5576 | ||
0d381245 VP |
5577 | b = set_raw_breakpoint_without_location (hardwareflag |
5578 | ? bp_hardware_breakpoint | |
5579 | : bp_breakpoint); | |
0101ce28 JJ |
5580 | set_breakpoint_count (breakpoint_count + 1); |
5581 | b->number = breakpoint_count; | |
72b2ff0e | 5582 | b->thread = -1; |
018d34a4 | 5583 | b->addr_string = addr_string[0]; |
72b2ff0e | 5584 | b->cond_string = NULL; |
0101ce28 | 5585 | b->ignore_count = ignore_count; |
0101ce28 | 5586 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5587 | b->condition_not_parsed = 1; |
604133b5 | 5588 | b->ops = ops; |
74960c60 VP |
5589 | |
5590 | update_global_location_list (); | |
0101ce28 JJ |
5591 | mention (b); |
5592 | } | |
5593 | ||
c3f6f71d | 5594 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5595 | warning (_("Multiple breakpoints were set.\n" |
5596 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5597 | /* That's it. Discard the cleanups for data inserted into the |
5598 | breakpoint. */ | |
5599 | discard_cleanups (breakpoint_chain); | |
5600 | /* But cleanup everything else. */ | |
5601 | do_cleanups (old_chain); | |
5602 | } | |
c906108c | 5603 | |
72b2ff0e VP |
5604 | /* Set a breakpoint. |
5605 | ARG is a string describing breakpoint address, | |
5606 | condition, and thread. | |
5607 | FLAG specifies if a breakpoint is hardware on, | |
5608 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5609 | and BP_TEMPFLAG. */ | |
5610 | ||
98deb0da | 5611 | static void |
72b2ff0e | 5612 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5613 | { |
72b2ff0e VP |
5614 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5615 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5616 | |
98deb0da VP |
5617 | break_command_really (arg, |
5618 | NULL, 0, 1 /* parse arg */, | |
5619 | tempflag, hardwareflag, | |
5620 | 0 /* Ignore count */, | |
604133b5 AR |
5621 | pending_break_support, |
5622 | NULL /* breakpoint_ops */, | |
5623 | from_tty); | |
c906108c SS |
5624 | } |
5625 | ||
72b2ff0e | 5626 | |
98deb0da VP |
5627 | void |
5628 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5629 | int hardwareflag, int tempflag, |
ce43223b | 5630 | int thread, int ignore_count, |
98deb0da | 5631 | int pending) |
c3f6f71d | 5632 | { |
98deb0da VP |
5633 | break_command_really (address, condition, thread, |
5634 | 0 /* condition and thread are valid. */, | |
5635 | tempflag, hardwareflag, | |
5636 | ignore_count, | |
5637 | pending | |
5638 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5639 | NULL, 0); |
c3f6f71d JM |
5640 | } |
5641 | ||
6a048695 JB |
5642 | /* Adjust SAL to the first instruction past the function prologue. |
5643 | The end of the prologue is determined using the line table from | |
5644 | the debugging information. | |
5645 | ||
5646 | If SAL is already past the prologue, then do nothing. */ | |
5647 | ||
5648 | static void | |
5649 | skip_prologue_sal (struct symtab_and_line *sal) | |
5650 | { | |
5651 | struct symbol *sym = find_pc_function (sal->pc); | |
5652 | struct symtab_and_line start_sal; | |
5653 | ||
5654 | if (sym == NULL) | |
5655 | return; | |
5656 | ||
5657 | start_sal = find_function_start_sal (sym, 1); | |
5658 | if (sal->pc < start_sal.pc) | |
5659 | *sal = start_sal; | |
5660 | } | |
c3f6f71d | 5661 | |
c906108c SS |
5662 | /* Helper function for break_command_1 and disassemble_command. */ |
5663 | ||
5664 | void | |
fba45db2 | 5665 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5666 | { |
5667 | CORE_ADDR pc; | |
5668 | ||
5669 | if (sal->pc == 0 && sal->symtab != NULL) | |
5670 | { | |
5671 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5672 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5673 | sal->line, sal->symtab->filename); |
5674 | sal->pc = pc; | |
6a048695 JB |
5675 | |
5676 | /* If this SAL corresponds to a breakpoint inserted using | |
5677 | a line number, then skip the function prologue if necessary. */ | |
5678 | if (sal->explicit_line) | |
5679 | skip_prologue_sal (sal); | |
c906108c SS |
5680 | } |
5681 | ||
5682 | if (sal->section == 0 && sal->symtab != NULL) | |
5683 | { | |
5684 | struct blockvector *bv; | |
c5aa993b JM |
5685 | struct block *b; |
5686 | struct symbol *sym; | |
c906108c | 5687 | |
801e3a5b | 5688 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5689 | if (bv != NULL) |
5690 | { | |
c906108c SS |
5691 | sym = block_function (b); |
5692 | if (sym != NULL) | |
5693 | { | |
5694 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5695 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5696 | } | |
5697 | else | |
5698 | { | |
5699 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5700 | have to look harder. This case can be executed if we have |
5701 | line numbers but no functions (as can happen in assembly | |
5702 | source). */ | |
c906108c | 5703 | |
c5aa993b | 5704 | struct minimal_symbol *msym; |
c906108c SS |
5705 | |
5706 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5707 | if (msym) | |
5708 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5709 | } | |
5710 | } | |
5711 | } | |
5712 | } | |
5713 | ||
5714 | void | |
fba45db2 | 5715 | break_command (char *arg, int from_tty) |
c906108c | 5716 | { |
db107f19 | 5717 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5718 | } |
5719 | ||
c906108c | 5720 | void |
fba45db2 | 5721 | tbreak_command (char *arg, int from_tty) |
c906108c | 5722 | { |
db107f19 | 5723 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5724 | } |
5725 | ||
c906108c | 5726 | static void |
fba45db2 | 5727 | hbreak_command (char *arg, int from_tty) |
c906108c | 5728 | { |
db107f19 | 5729 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5730 | } |
5731 | ||
5732 | static void | |
fba45db2 | 5733 | thbreak_command (char *arg, int from_tty) |
c906108c | 5734 | { |
db107f19 | 5735 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5736 | } |
5737 | ||
5738 | static void | |
fba45db2 | 5739 | stop_command (char *arg, int from_tty) |
c906108c | 5740 | { |
a3f17187 | 5741 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5742 | Usage: stop in <function | address>\n\ |
a3f17187 | 5743 | stop at <line>\n")); |
c906108c SS |
5744 | } |
5745 | ||
5746 | static void | |
fba45db2 | 5747 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5748 | { |
5749 | int badInput = 0; | |
5750 | ||
c5aa993b | 5751 | if (arg == (char *) NULL) |
c906108c SS |
5752 | badInput = 1; |
5753 | else if (*arg != '*') | |
5754 | { | |
5755 | char *argptr = arg; | |
5756 | int hasColon = 0; | |
5757 | ||
53a5351d JM |
5758 | /* look for a ':'. If this is a line number specification, then |
5759 | say it is bad, otherwise, it should be an address or | |
5760 | function/method name */ | |
c906108c | 5761 | while (*argptr && !hasColon) |
c5aa993b JM |
5762 | { |
5763 | hasColon = (*argptr == ':'); | |
5764 | argptr++; | |
5765 | } | |
c906108c SS |
5766 | |
5767 | if (hasColon) | |
c5aa993b | 5768 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5769 | else |
c5aa993b | 5770 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5771 | } |
5772 | ||
5773 | if (badInput) | |
a3f17187 | 5774 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5775 | else |
db107f19 | 5776 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5777 | } |
5778 | ||
5779 | static void | |
fba45db2 | 5780 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5781 | { |
5782 | int badInput = 0; | |
5783 | ||
c5aa993b | 5784 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5785 | badInput = 1; |
5786 | else | |
5787 | { | |
5788 | char *argptr = arg; | |
5789 | int hasColon = 0; | |
5790 | ||
5791 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5792 | it is probably a line number. */ |
c906108c | 5793 | while (*argptr && !hasColon) |
c5aa993b JM |
5794 | { |
5795 | hasColon = (*argptr == ':'); | |
5796 | argptr++; | |
5797 | } | |
c906108c SS |
5798 | |
5799 | if (hasColon) | |
c5aa993b | 5800 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5801 | else |
c5aa993b | 5802 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5803 | } |
5804 | ||
5805 | if (badInput) | |
a3f17187 | 5806 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5807 | else |
db107f19 | 5808 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5809 | } |
5810 | ||
53a5351d JM |
5811 | /* accessflag: hw_write: watch write, |
5812 | hw_read: watch read, | |
5813 | hw_access: watch access (read or write) */ | |
c906108c | 5814 | static void |
fba45db2 | 5815 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5816 | { |
d983da9c | 5817 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5818 | struct symtab_and_line sal; |
5819 | struct expression *exp; | |
5820 | struct block *exp_valid_block; | |
5821 | struct value *val, *mark; | |
5822 | struct frame_info *frame; | |
5823 | struct frame_info *prev_frame = NULL; | |
5824 | char *exp_start = NULL; | |
5825 | char *exp_end = NULL; | |
37e4754d | 5826 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5827 | int toklen; |
5828 | char *cond_start = NULL; | |
5829 | char *cond_end = NULL; | |
5830 | struct expression *cond = NULL; | |
5831 | int i, other_type_used, target_resources_ok = 0; | |
5832 | enum bptype bp_type; | |
5833 | int mem_cnt = 0; | |
37e4754d | 5834 | int thread = -1; |
c906108c | 5835 | |
fe39c653 | 5836 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5837 | |
37e4754d LM |
5838 | /* Make sure that we actually have parameters to parse. */ |
5839 | if (arg != NULL && arg[0] != '\0') | |
5840 | { | |
5841 | toklen = strlen (arg); /* Size of argument list. */ | |
5842 | ||
5843 | /* Points tok to the end of the argument list. */ | |
5844 | tok = arg + toklen - 1; | |
5845 | ||
5846 | /* Go backwards in the parameters list. Skip the last parameter. | |
5847 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5848 | be the thread identifier. */ | |
5849 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5850 | tok--; | |
5851 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5852 | tok--; | |
5853 | ||
5854 | /* Points end_tok to the beginning of the last token. */ | |
5855 | id_tok_start = tok + 1; | |
5856 | ||
5857 | /* Go backwards in the parameters list. Skip one more parameter. | |
5858 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5859 | reach a "thread" token. */ | |
5860 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5861 | tok--; | |
5862 | ||
5863 | end_tok = tok; | |
5864 | ||
5865 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5866 | tok--; | |
5867 | ||
5868 | /* Move the pointer forward to skip the whitespace and | |
5869 | calculate the length of the token. */ | |
5870 | tok++; | |
5871 | toklen = end_tok - tok; | |
5872 | ||
5873 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5874 | { | |
5875 | /* At this point we've found a "thread" token, which means | |
5876 | the user is trying to set a watchpoint that triggers | |
5877 | only in a specific thread. */ | |
5878 | char *endp; | |
5879 | ||
5880 | /* Extract the thread ID from the next token. */ | |
5881 | thread = strtol (id_tok_start, &endp, 0); | |
5882 | ||
5883 | /* Check if the user provided a valid numeric value for the | |
5884 | thread ID. */ | |
5885 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5886 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5887 | ||
5888 | /* Check if the thread actually exists. */ | |
5889 | if (!valid_thread_id (thread)) | |
5890 | error (_("Unknown thread %d."), thread); | |
5891 | ||
5892 | /* Truncate the string and get rid of the thread <thread_num> | |
5893 | parameter before the parameter list is parsed by the | |
5894 | evaluate_expression() function. */ | |
5895 | *tok = '\0'; | |
5896 | } | |
5897 | } | |
5898 | ||
5899 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5900 | innermost_block = NULL; |
5901 | exp_start = arg; | |
5902 | exp = parse_exp_1 (&arg, 0, 0); | |
5903 | exp_end = arg; | |
5904 | exp_valid_block = innermost_block; | |
5905 | mark = value_mark (); | |
fa4727a6 DJ |
5906 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5907 | if (val != NULL) | |
5908 | release_value (val); | |
c906108c SS |
5909 | |
5910 | tok = arg; | |
5911 | while (*tok == ' ' || *tok == '\t') | |
5912 | tok++; | |
5913 | end_tok = tok; | |
5914 | ||
5915 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5916 | end_tok++; | |
5917 | ||
5918 | toklen = end_tok - tok; | |
5919 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5920 | { | |
5921 | tok = cond_start = end_tok + 1; | |
5922 | cond = parse_exp_1 (&tok, 0, 0); | |
5923 | cond_end = tok; | |
5924 | } | |
5925 | if (*tok) | |
8a3fe4f8 | 5926 | error (_("Junk at end of command.")); |
c906108c | 5927 | |
53a5351d | 5928 | if (accessflag == hw_read) |
c5aa993b | 5929 | bp_type = bp_read_watchpoint; |
53a5351d | 5930 | else if (accessflag == hw_access) |
c5aa993b JM |
5931 | bp_type = bp_access_watchpoint; |
5932 | else | |
5933 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5934 | |
5935 | mem_cnt = can_use_hardware_watchpoint (val); | |
5936 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5937 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5938 | if (mem_cnt != 0) |
5939 | { | |
5940 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5941 | target_resources_ok = |
5942 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5943 | other_type_used); | |
c5aa993b | 5944 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5945 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5946 | |
c5aa993b | 5947 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5948 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5949 | } |
c906108c | 5950 | |
4d28f7a8 KB |
5951 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5952 | watchpoint could not be set. */ | |
5953 | if (!mem_cnt || target_resources_ok <= 0) | |
5954 | bp_type = bp_watchpoint; | |
5955 | ||
d983da9c DJ |
5956 | frame = block_innermost_frame (exp_valid_block); |
5957 | if (frame) | |
5958 | prev_frame = get_prev_frame (frame); | |
5959 | else | |
5960 | prev_frame = NULL; | |
5961 | ||
5962 | /* If the expression is "local", then set up a "watchpoint scope" | |
5963 | breakpoint at the point where we've left the scope of the watchpoint | |
5964 | expression. Create the scope breakpoint before the watchpoint, so | |
5965 | that we will encounter it first in bpstat_stop_status. */ | |
5966 | if (innermost_block && prev_frame) | |
5967 | { | |
5968 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
5969 | bp_watchpoint_scope); | |
5970 | ||
5971 | scope_breakpoint->enable_state = bp_enabled; | |
5972 | ||
5973 | /* Automatically delete the breakpoint when it hits. */ | |
5974 | scope_breakpoint->disposition = disp_del; | |
5975 | ||
5976 | /* Only break in the proper frame (help with recursion). */ | |
5977 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
5978 | ||
5979 | /* Set the address at which we will stop. */ | |
5980 | scope_breakpoint->loc->requested_address | |
5981 | = get_frame_pc (prev_frame); | |
5982 | scope_breakpoint->loc->address | |
5983 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
5984 | scope_breakpoint->type); | |
5985 | } | |
5986 | ||
c906108c | 5987 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5988 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5989 | set_breakpoint_count (breakpoint_count + 1); |
5990 | b->number = breakpoint_count; | |
37e4754d | 5991 | b->thread = thread; |
b5de0fa7 | 5992 | b->disposition = disp_donttouch; |
c906108c SS |
5993 | b->exp = exp; |
5994 | b->exp_valid_block = exp_valid_block; | |
5995 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5996 | b->val = val; | |
fa4727a6 | 5997 | b->val_valid = 1; |
511a6cd4 | 5998 | b->loc->cond = cond; |
c906108c SS |
5999 | if (cond_start) |
6000 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6001 | else | |
6002 | b->cond_string = 0; | |
c5aa993b | 6003 | |
c906108c | 6004 | if (frame) |
d983da9c | 6005 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6006 | else |
35a487f1 | 6007 | b->watchpoint_frame = null_frame_id; |
c906108c | 6008 | |
d983da9c | 6009 | if (scope_breakpoint != NULL) |
c906108c | 6010 | { |
d983da9c DJ |
6011 | /* The scope breakpoint is related to the watchpoint. We will |
6012 | need to act on them together. */ | |
6013 | b->related_breakpoint = scope_breakpoint; | |
6014 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6015 | } |
d983da9c | 6016 | |
c906108c SS |
6017 | value_free_to_mark (mark); |
6018 | mention (b); | |
74960c60 | 6019 | update_global_location_list (); |
c906108c SS |
6020 | } |
6021 | ||
6022 | /* Return count of locations need to be watched and can be handled | |
6023 | in hardware. If the watchpoint can not be handled | |
6024 | in hardware return zero. */ | |
6025 | ||
c906108c | 6026 | static int |
fba45db2 | 6027 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6028 | { |
6029 | int found_memory_cnt = 0; | |
2e70b7b9 | 6030 | struct value *head = v; |
c906108c SS |
6031 | |
6032 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6033 | if (!can_use_hw_watchpoints) |
c906108c | 6034 | return 0; |
c5aa993b | 6035 | |
5c44784c JM |
6036 | /* Make sure that the value of the expression depends only upon |
6037 | memory contents, and values computed from them within GDB. If we | |
6038 | find any register references or function calls, we can't use a | |
6039 | hardware watchpoint. | |
6040 | ||
6041 | The idea here is that evaluating an expression generates a series | |
6042 | of values, one holding the value of every subexpression. (The | |
6043 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6044 | a*b+c.) GDB's values hold almost enough information to establish | |
6045 | the criteria given above --- they identify memory lvalues, | |
6046 | register lvalues, computed values, etcetera. So we can evaluate | |
6047 | the expression, and then scan the chain of values that leaves | |
6048 | behind to decide whether we can detect any possible change to the | |
6049 | expression's final value using only hardware watchpoints. | |
6050 | ||
6051 | However, I don't think that the values returned by inferior | |
6052 | function calls are special in any way. So this function may not | |
6053 | notice that an expression involving an inferior function call | |
6054 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6055 | for (; v; v = value_next (v)) |
c906108c | 6056 | { |
5c44784c | 6057 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6058 | { |
d69fe07e | 6059 | if (value_lazy (v)) |
5c44784c JM |
6060 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6061 | we either just used its address (e.g., `a' in `a.b') or | |
6062 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6063 | ; | |
53a5351d | 6064 | else |
5c44784c JM |
6065 | { |
6066 | /* Ahh, memory we actually used! Check if we can cover | |
6067 | it with hardware watchpoints. */ | |
df407dfe | 6068 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6069 | |
6070 | /* We only watch structs and arrays if user asked for it | |
6071 | explicitly, never if they just happen to appear in a | |
6072 | middle of some value chain. */ | |
6073 | if (v == head | |
6074 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6075 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6076 | { | |
df407dfe AC |
6077 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6078 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6079 | |
6080 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6081 | return 0; | |
6082 | else | |
6083 | found_memory_cnt++; | |
6084 | } | |
5c44784c | 6085 | } |
c5aa993b | 6086 | } |
5086187c AC |
6087 | else if (VALUE_LVAL (v) != not_lval |
6088 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6089 | return 0; /* ??? What does this represent? */ |
5086187c | 6090 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6091 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6092 | } |
6093 | ||
6094 | /* The expression itself looks suitable for using a hardware | |
6095 | watchpoint, but give the target machine a chance to reject it. */ | |
6096 | return found_memory_cnt; | |
6097 | } | |
6098 | ||
8b93c638 | 6099 | void |
fba45db2 | 6100 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6101 | { |
6102 | watch_command (arg, from_tty); | |
6103 | } | |
8926118c | 6104 | |
c5aa993b | 6105 | static void |
fba45db2 | 6106 | watch_command (char *arg, int from_tty) |
c906108c | 6107 | { |
53a5351d | 6108 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6109 | } |
6110 | ||
8b93c638 | 6111 | void |
fba45db2 | 6112 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6113 | { |
6114 | rwatch_command (arg, from_tty); | |
6115 | } | |
8926118c | 6116 | |
c5aa993b | 6117 | static void |
fba45db2 | 6118 | rwatch_command (char *arg, int from_tty) |
c906108c | 6119 | { |
53a5351d | 6120 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6121 | } |
6122 | ||
8b93c638 | 6123 | void |
fba45db2 | 6124 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6125 | { |
6126 | awatch_command (arg, from_tty); | |
6127 | } | |
8926118c | 6128 | |
c5aa993b | 6129 | static void |
fba45db2 | 6130 | awatch_command (char *arg, int from_tty) |
c906108c | 6131 | { |
53a5351d | 6132 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6133 | } |
c906108c | 6134 | \f |
c5aa993b | 6135 | |
43ff13b4 | 6136 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6137 | because it uses the mechanisms of breakpoints. */ |
6138 | ||
43ff13b4 JM |
6139 | /* This function is called by fetch_inferior_event via the |
6140 | cmd_continuation pointer, to complete the until command. It takes | |
6141 | care of cleaning up the temporary breakpoints set up by the until | |
6142 | command. */ | |
c2c6d25f | 6143 | static void |
f107f563 | 6144 | until_break_command_continuation (struct continuation_arg *arg, int error) |
43ff13b4 | 6145 | { |
f107f563 VP |
6146 | delete_breakpoint ((struct breakpoint *)(arg->data.pointer)); |
6147 | if (arg->next) | |
6148 | delete_breakpoint ((struct breakpoint *)(arg->next->data.pointer)); | |
43ff13b4 JM |
6149 | } |
6150 | ||
c906108c | 6151 | void |
ae66c1fc | 6152 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6153 | { |
6154 | struct symtabs_and_lines sals; | |
6155 | struct symtab_and_line sal; | |
206415a3 DJ |
6156 | struct frame_info *frame = get_selected_frame (NULL); |
6157 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6158 | struct breakpoint *breakpoint; |
f107f563 | 6159 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 6160 | struct cleanup *old_chain; |
0d06e24b | 6161 | struct continuation_arg *arg1; |
f107f563 | 6162 | struct continuation_arg *arg2; |
0d06e24b | 6163 | |
c906108c SS |
6164 | |
6165 | clear_proceed_status (); | |
6166 | ||
6167 | /* Set a breakpoint where the user wants it and at return from | |
6168 | this function */ | |
c5aa993b | 6169 | |
c906108c SS |
6170 | if (default_breakpoint_valid) |
6171 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6172 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6173 | else |
53a5351d | 6174 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6175 | 0, (char ***) NULL, NULL); |
c5aa993b | 6176 | |
c906108c | 6177 | if (sals.nelts != 1) |
8a3fe4f8 | 6178 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6179 | |
c906108c | 6180 | sal = sals.sals[0]; |
b8c9b27d | 6181 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6182 | |
c906108c | 6183 | if (*arg) |
8a3fe4f8 | 6184 | error (_("Junk at end of arguments.")); |
c5aa993b | 6185 | |
c906108c | 6186 | resolve_sal_pc (&sal); |
c5aa993b | 6187 | |
ae66c1fc EZ |
6188 | if (anywhere) |
6189 | /* If the user told us to continue until a specified location, | |
6190 | we don't specify a frame at which we need to stop. */ | |
6191 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6192 | else | |
6193 | /* Otherwise, specify the current frame, because we want to stop only | |
6194 | at the very same frame. */ | |
206415a3 | 6195 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6196 | bp_until); |
c5aa993b | 6197 | |
f107f563 | 6198 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6199 | |
ae66c1fc EZ |
6200 | /* Keep within the current frame, or in frames called by the current |
6201 | one. */ | |
c906108c SS |
6202 | if (prev_frame) |
6203 | { | |
30f7db39 AC |
6204 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6205 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6206 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6207 | bp_until); | |
6208 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6209 | } |
c5aa993b | 6210 | |
c906108c | 6211 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6212 | |
6213 | /* If we are running asynchronously, and proceed call above has actually | |
6214 | managed to start the target, arrange for breakpoints to be | |
6215 | deleted when the target stops. Otherwise, we're already stopped and | |
6216 | delete breakpoints via cleanup chain. */ | |
6217 | ||
6218 | if (target_can_async_p () && target_executing) | |
6219 | { | |
6220 | arg1 = | |
6221 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
6222 | arg1->next = NULL; | |
6223 | arg1->data.pointer = breakpoint; | |
6224 | ||
6225 | if (breakpoint2) | |
6226 | { | |
6227 | arg2 = (struct continuation_arg *) | |
6228 | xmalloc ( sizeof (struct continuation_arg)); | |
6229 | arg2->next = NULL; | |
6230 | arg2->data.pointer = breakpoint2; | |
6231 | arg1->next = arg2; | |
6232 | } | |
6233 | ||
6234 | discard_cleanups (old_chain); | |
6235 | add_continuation (until_break_command_continuation, arg1); | |
6236 | } | |
6237 | else | |
c5aa993b | 6238 | do_cleanups (old_chain); |
c906108c | 6239 | } |
ae66c1fc | 6240 | |
c906108c | 6241 | static void |
fba45db2 | 6242 | ep_skip_leading_whitespace (char **s) |
c906108c | 6243 | { |
c5aa993b JM |
6244 | if ((s == NULL) || (*s == NULL)) |
6245 | return; | |
6246 | while (isspace (**s)) | |
6247 | *s += 1; | |
c906108c | 6248 | } |
c5aa993b | 6249 | |
c906108c SS |
6250 | /* This function examines a string, and attempts to find a token |
6251 | that might be an event name in the leading characters. If a | |
6252 | possible match is found, a pointer to the last character of | |
6253 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6254 | |
c906108c | 6255 | static char * |
fba45db2 | 6256 | ep_find_event_name_end (char *arg) |
c906108c | 6257 | { |
c5aa993b JM |
6258 | char *s = arg; |
6259 | char *event_name_end = NULL; | |
6260 | ||
c906108c SS |
6261 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6262 | if (arg == NULL) | |
6263 | return NULL; | |
c5aa993b | 6264 | |
c906108c | 6265 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6266 | Basically, we're looking for alphanumerics and underscores; |
6267 | anything else delimites the token. */ | |
c906108c SS |
6268 | while (*s != '\0') |
6269 | { | |
c5aa993b JM |
6270 | if (!isalnum (*s) && (*s != '_')) |
6271 | break; | |
c906108c SS |
6272 | event_name_end = s; |
6273 | s++; | |
6274 | } | |
c5aa993b | 6275 | |
c906108c SS |
6276 | return event_name_end; |
6277 | } | |
6278 | ||
c5aa993b | 6279 | |
c906108c SS |
6280 | /* This function attempts to parse an optional "if <cond>" clause |
6281 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6282 | |
c906108c SS |
6283 | Else, it returns a pointer to the condition string. (It does not |
6284 | attempt to evaluate the string against a particular block.) And, | |
6285 | it updates arg to point to the first character following the parsed | |
6286 | if clause in the arg string. */ | |
53a5351d | 6287 | |
c906108c | 6288 | static char * |
fba45db2 | 6289 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6290 | { |
c5aa993b JM |
6291 | char *cond_string; |
6292 | ||
6293 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6294 | return NULL; |
c5aa993b | 6295 | |
c906108c SS |
6296 | /* Skip the "if" keyword. */ |
6297 | (*arg) += 2; | |
c5aa993b | 6298 | |
c906108c SS |
6299 | /* Skip any extra leading whitespace, and record the start of the |
6300 | condition string. */ | |
6301 | ep_skip_leading_whitespace (arg); | |
6302 | cond_string = *arg; | |
c5aa993b | 6303 | |
c906108c SS |
6304 | /* Assume that the condition occupies the remainder of the arg string. */ |
6305 | (*arg) += strlen (cond_string); | |
c5aa993b | 6306 | |
c906108c SS |
6307 | return cond_string; |
6308 | } | |
c5aa993b | 6309 | |
c906108c SS |
6310 | /* This function attempts to parse an optional filename from the arg |
6311 | string. If one is not found, it returns NULL. | |
c5aa993b | 6312 | |
c906108c SS |
6313 | Else, it returns a pointer to the parsed filename. (This function |
6314 | makes no attempt to verify that a file of that name exists, or is | |
6315 | accessible.) And, it updates arg to point to the first character | |
6316 | following the parsed filename in the arg string. | |
c5aa993b | 6317 | |
c906108c SS |
6318 | Note that clients needing to preserve the returned filename for |
6319 | future access should copy it to their own buffers. */ | |
6320 | static char * | |
fba45db2 | 6321 | ep_parse_optional_filename (char **arg) |
c906108c | 6322 | { |
c5aa993b JM |
6323 | static char filename[1024]; |
6324 | char *arg_p = *arg; | |
6325 | int i; | |
6326 | char c; | |
6327 | ||
c906108c SS |
6328 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6329 | return NULL; | |
c5aa993b JM |
6330 | |
6331 | for (i = 0;; i++) | |
c906108c SS |
6332 | { |
6333 | c = *arg_p; | |
6334 | if (isspace (c)) | |
c5aa993b | 6335 | c = '\0'; |
c906108c SS |
6336 | filename[i] = c; |
6337 | if (c == '\0') | |
c5aa993b | 6338 | break; |
c906108c SS |
6339 | arg_p++; |
6340 | } | |
6341 | *arg = arg_p; | |
c5aa993b | 6342 | |
c906108c SS |
6343 | return filename; |
6344 | } | |
c5aa993b | 6345 | |
c906108c SS |
6346 | /* Commands to deal with catching events, such as signals, exceptions, |
6347 | process start/exit, etc. */ | |
c5aa993b JM |
6348 | |
6349 | typedef enum | |
6350 | { | |
6351 | catch_fork, catch_vfork | |
6352 | } | |
6353 | catch_fork_kind; | |
6354 | ||
c906108c | 6355 | static void |
fba45db2 KB |
6356 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6357 | int from_tty) | |
c906108c | 6358 | { |
c5aa993b JM |
6359 | char *cond_string = NULL; |
6360 | ||
c906108c | 6361 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6362 | |
c906108c | 6363 | /* The allowed syntax is: |
c5aa993b JM |
6364 | catch [v]fork |
6365 | catch [v]fork if <cond> | |
6366 | ||
c906108c SS |
6367 | First, check if there's an if clause. */ |
6368 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6369 | |
c906108c | 6370 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6371 | error (_("Junk at end of arguments.")); |
c5aa993b | 6372 | |
c906108c SS |
6373 | /* If this target supports it, create a fork or vfork catchpoint |
6374 | and enable reporting of such events. */ | |
c5aa993b JM |
6375 | switch (fork_kind) |
6376 | { | |
6377 | case catch_fork: | |
c906108c SS |
6378 | create_fork_event_catchpoint (tempflag, cond_string); |
6379 | break; | |
c5aa993b | 6380 | case catch_vfork: |
c906108c SS |
6381 | create_vfork_event_catchpoint (tempflag, cond_string); |
6382 | break; | |
c5aa993b | 6383 | default: |
8a3fe4f8 | 6384 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6385 | break; |
c5aa993b | 6386 | } |
c906108c SS |
6387 | } |
6388 | ||
6389 | static void | |
fba45db2 | 6390 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6391 | { |
c5aa993b | 6392 | char *cond_string = NULL; |
c906108c SS |
6393 | |
6394 | ep_skip_leading_whitespace (&arg); | |
6395 | ||
6396 | /* The allowed syntax is: | |
c5aa993b JM |
6397 | catch exec |
6398 | catch exec if <cond> | |
c906108c SS |
6399 | |
6400 | First, check if there's an if clause. */ | |
6401 | cond_string = ep_parse_optional_if_clause (&arg); | |
6402 | ||
6403 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6404 | error (_("Junk at end of arguments.")); |
c906108c SS |
6405 | |
6406 | /* If this target supports it, create an exec catchpoint | |
6407 | and enable reporting of such events. */ | |
6408 | create_exec_event_catchpoint (tempflag, cond_string); | |
6409 | } | |
c5aa993b | 6410 | |
c906108c | 6411 | static void |
fba45db2 | 6412 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6413 | { |
c5aa993b JM |
6414 | char *dll_pathname = NULL; |
6415 | char *cond_string = NULL; | |
6416 | ||
c906108c | 6417 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6418 | |
c906108c | 6419 | /* The allowed syntax is: |
c5aa993b JM |
6420 | catch load |
6421 | catch load if <cond> | |
6422 | catch load <filename> | |
6423 | catch load <filename> if <cond> | |
6424 | ||
c906108c SS |
6425 | The user is not allowed to specify the <filename> after an |
6426 | if clause. | |
c5aa993b | 6427 | |
c906108c | 6428 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6429 | |
c906108c SS |
6430 | First, check if there's an if clause. If so, then there |
6431 | cannot be a filename. */ | |
6432 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6433 | |
c906108c SS |
6434 | /* If there was an if clause, then there cannot be a filename. |
6435 | Else, there might be a filename and an if clause. */ | |
6436 | if (cond_string == NULL) | |
6437 | { | |
6438 | dll_pathname = ep_parse_optional_filename (&arg); | |
6439 | ep_skip_leading_whitespace (&arg); | |
6440 | cond_string = ep_parse_optional_if_clause (&arg); | |
6441 | } | |
c5aa993b | 6442 | |
c906108c | 6443 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6444 | error (_("Junk at end of arguments.")); |
c5aa993b | 6445 | |
c906108c SS |
6446 | /* Create a load breakpoint that only triggers when a load of |
6447 | the specified dll (or any dll, if no pathname was specified) | |
6448 | occurs. */ | |
39f77062 | 6449 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6450 | dll_pathname, cond_string); |
c906108c | 6451 | } |
c5aa993b | 6452 | |
c906108c | 6453 | static void |
fba45db2 | 6454 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6455 | { |
c5aa993b JM |
6456 | char *dll_pathname = NULL; |
6457 | char *cond_string = NULL; | |
6458 | ||
c906108c | 6459 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6460 | |
c906108c | 6461 | /* The allowed syntax is: |
c5aa993b JM |
6462 | catch unload |
6463 | catch unload if <cond> | |
6464 | catch unload <filename> | |
6465 | catch unload <filename> if <cond> | |
6466 | ||
c906108c SS |
6467 | The user is not allowed to specify the <filename> after an |
6468 | if clause. | |
c5aa993b | 6469 | |
c906108c | 6470 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6471 | |
c906108c SS |
6472 | First, check if there's an if clause. If so, then there |
6473 | cannot be a filename. */ | |
6474 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6475 | |
c906108c SS |
6476 | /* If there was an if clause, then there cannot be a filename. |
6477 | Else, there might be a filename and an if clause. */ | |
6478 | if (cond_string == NULL) | |
6479 | { | |
6480 | dll_pathname = ep_parse_optional_filename (&arg); | |
6481 | ep_skip_leading_whitespace (&arg); | |
6482 | cond_string = ep_parse_optional_if_clause (&arg); | |
6483 | } | |
c5aa993b | 6484 | |
c906108c | 6485 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6486 | error (_("Junk at end of arguments.")); |
c5aa993b | 6487 | |
c906108c SS |
6488 | /* Create an unload breakpoint that only triggers when an unload of |
6489 | the specified dll (or any dll, if no pathname was specified) | |
6490 | occurs. */ | |
39f77062 | 6491 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6492 | dll_pathname, cond_string); |
c906108c | 6493 | } |
c906108c | 6494 | |
3086aeae DJ |
6495 | static enum print_stop_action |
6496 | print_exception_catchpoint (struct breakpoint *b) | |
6497 | { | |
6498 | annotate_catchpoint (b->number); | |
6499 | ||
6500 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6501 | printf_filtered (_("\nCatchpoint %d (exception thrown)\n"), |
3086aeae DJ |
6502 | b->number); |
6503 | else | |
a3f17187 | 6504 | printf_filtered (_("\nCatchpoint %d (exception caught)\n"), |
3086aeae DJ |
6505 | b->number); |
6506 | ||
6507 | return PRINT_SRC_AND_LOC; | |
6508 | } | |
6509 | ||
6510 | static void | |
6511 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6512 | { | |
6513 | if (addressprint) | |
6514 | { | |
6515 | annotate_field (4); | |
604133b5 AR |
6516 | if (b->loc == NULL || b->loc->shlib_disabled) |
6517 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6518 | else | |
6519 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6520 | } |
6521 | annotate_field (5); | |
604133b5 AR |
6522 | if (b->loc) |
6523 | *last_addr = b->loc->address; | |
3086aeae DJ |
6524 | if (strstr (b->addr_string, "throw") != NULL) |
6525 | ui_out_field_string (uiout, "what", "exception throw"); | |
6526 | else | |
6527 | ui_out_field_string (uiout, "what", "exception catch"); | |
6528 | } | |
6529 | ||
6530 | static void | |
6531 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6532 | { | |
6533 | if (strstr (b->addr_string, "throw") != NULL) | |
a3f17187 | 6534 | printf_filtered (_("Catchpoint %d (throw)"), b->number); |
3086aeae | 6535 | else |
a3f17187 | 6536 | printf_filtered (_("Catchpoint %d (catch)"), b->number); |
3086aeae DJ |
6537 | } |
6538 | ||
6539 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6540 | print_exception_catchpoint, | |
6541 | print_one_exception_catchpoint, | |
6542 | print_mention_exception_catchpoint | |
6543 | }; | |
6544 | ||
6545 | static int | |
6546 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6547 | enum exception_event_kind ex_event, int from_tty) | |
6548 | { | |
604133b5 AR |
6549 | char *trigger_func_name; |
6550 | ||
3086aeae | 6551 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6552 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6553 | else |
604133b5 | 6554 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6555 | |
604133b5 AR |
6556 | break_command_really (trigger_func_name, cond_string, -1, |
6557 | 0 /* condition and thread are valid. */, | |
6558 | 0, 0, | |
6559 | 0, | |
6560 | AUTO_BOOLEAN_TRUE /* pending */, | |
6561 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6562 | |
3086aeae DJ |
6563 | return 1; |
6564 | } | |
6565 | ||
c5aa993b | 6566 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6567 | |
6568 | static void | |
fba45db2 KB |
6569 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6570 | int tempflag, int from_tty) | |
c906108c | 6571 | { |
c5aa993b JM |
6572 | char *cond_string = NULL; |
6573 | struct symtab_and_line *sal = NULL; | |
6574 | ||
c906108c | 6575 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6576 | |
c906108c SS |
6577 | cond_string = ep_parse_optional_if_clause (&arg); |
6578 | ||
6579 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6580 | error (_("Junk at end of arguments.")); |
c906108c SS |
6581 | |
6582 | if ((ex_event != EX_EVENT_THROW) && | |
6583 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6584 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6585 | |
3086aeae DJ |
6586 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6587 | return; | |
6588 | ||
8a3fe4f8 | 6589 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6590 | } |
6591 | ||
f7f9143b JB |
6592 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6593 | ||
6594 | static void | |
6595 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6596 | char *addr_string, | |
6597 | char *exp_string, | |
6598 | char *cond_string, | |
6599 | struct expression *cond, | |
6600 | struct breakpoint_ops *ops, | |
6601 | int tempflag, | |
6602 | int from_tty) | |
6603 | { | |
6604 | struct breakpoint *b; | |
6605 | ||
6606 | if (from_tty) | |
6607 | { | |
6608 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6609 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6610 | version for exception catchpoints, because two catchpoints | |
6611 | used for different exception names will use the same address. | |
6612 | In this case, a "breakpoint ... also set at..." warning is | |
6613 | unproductive. Besides. the warning phrasing is also a bit | |
6614 | inapropriate, we should use the word catchpoint, and tell | |
6615 | the user what type of catchpoint it is. The above is good | |
6616 | enough for now, though. */ | |
6617 | } | |
6618 | ||
6619 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6620 | set_breakpoint_count (breakpoint_count + 1); | |
6621 | ||
6622 | b->enable_state = bp_enabled; | |
6623 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6624 | b->number = breakpoint_count; | |
6625 | b->ignore_count = 0; | |
511a6cd4 | 6626 | b->loc->cond = cond; |
f7f9143b JB |
6627 | b->addr_string = addr_string; |
6628 | b->language = language_ada; | |
6629 | b->cond_string = cond_string; | |
6630 | b->exp_string = exp_string; | |
6631 | b->thread = -1; | |
6632 | b->ops = ops; | |
f7f9143b JB |
6633 | |
6634 | mention (b); | |
74960c60 | 6635 | update_global_location_list (); |
f7f9143b JB |
6636 | } |
6637 | ||
6638 | /* Implement the "catch exception" command. */ | |
6639 | ||
6640 | static void | |
6641 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6642 | { | |
6643 | struct symtab_and_line sal; | |
6644 | enum bptype type; | |
6645 | char *addr_string = NULL; | |
6646 | char *exp_string = NULL; | |
6647 | char *cond_string = NULL; | |
6648 | struct expression *cond = NULL; | |
6649 | struct breakpoint_ops *ops = NULL; | |
6650 | ||
6651 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6652 | &cond_string, &cond, &ops); | |
6653 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6654 | cond_string, cond, ops, tempflag, | |
6655 | from_tty); | |
6656 | } | |
6657 | ||
6658 | /* Implement the "catch assert" command. */ | |
6659 | ||
6660 | static void | |
6661 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6662 | { | |
6663 | struct symtab_and_line sal; | |
6664 | char *addr_string = NULL; | |
6665 | struct breakpoint_ops *ops = NULL; | |
6666 | ||
6667 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6668 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6669 | tempflag, from_tty); | |
6670 | } | |
6671 | ||
c906108c | 6672 | static void |
fba45db2 | 6673 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6674 | { |
c5aa993b | 6675 | |
c906108c SS |
6676 | /* The first argument may be an event name, such as "start" or "load". |
6677 | If so, then handle it as such. If it doesn't match an event name, | |
6678 | then attempt to interpret it as an exception name. (This latter is | |
6679 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6680 | |
c906108c | 6681 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6682 | char *arg1_start = arg; |
6683 | char *arg1_end; | |
6684 | int arg1_length; | |
6685 | ||
c906108c SS |
6686 | if (arg1_start == NULL) |
6687 | { | |
c5aa993b | 6688 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6689 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6690 | /* return; */ | |
c5aa993b | 6691 | /* Now, this is not allowed */ |
8a3fe4f8 | 6692 | error (_("Catch requires an event name.")); |
c906108c SS |
6693 | |
6694 | } | |
6695 | arg1_end = ep_find_event_name_end (arg1_start); | |
6696 | if (arg1_end == NULL) | |
8a3fe4f8 | 6697 | error (_("catch requires an event")); |
c906108c | 6698 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6699 | |
c906108c SS |
6700 | /* Try to match what we found against known event names. */ |
6701 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6702 | { | |
8a3fe4f8 | 6703 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6704 | } |
6705 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6706 | { | |
53a5351d JM |
6707 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6708 | tempflag, from_tty); | |
c906108c SS |
6709 | } |
6710 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6711 | { | |
53a5351d JM |
6712 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6713 | tempflag, from_tty); | |
c906108c SS |
6714 | } |
6715 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6716 | { | |
8a3fe4f8 | 6717 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6718 | } |
6719 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6720 | { | |
8a3fe4f8 | 6721 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6722 | } |
6723 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6724 | { | |
8a3fe4f8 | 6725 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6726 | } |
6727 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6728 | { | |
8a3fe4f8 | 6729 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6730 | } |
6731 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6732 | { | |
8a3fe4f8 | 6733 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6734 | } |
6735 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6736 | { | |
c5aa993b | 6737 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6738 | } |
6739 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6740 | { | |
c5aa993b | 6741 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6742 | } |
6743 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6744 | { | |
c5aa993b | 6745 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6746 | } |
6747 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6748 | { | |
c5aa993b | 6749 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6750 | } |
6751 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6752 | { | |
c5aa993b | 6753 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6754 | } |
6755 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6756 | { | |
8a3fe4f8 | 6757 | error (_("Catch of stop not yet implemented")); |
c906108c | 6758 | } |
f7f9143b JB |
6759 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6760 | { | |
6761 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6762 | } | |
6763 | ||
6764 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6765 | { | |
6766 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6767 | } | |
c5aa993b | 6768 | |
c906108c SS |
6769 | /* This doesn't appear to be an event name */ |
6770 | ||
6771 | else | |
6772 | { | |
6773 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6774 | as the name of an exception */ |
c906108c | 6775 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6776 | /* Now this is not allowed */ |
8a3fe4f8 | 6777 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6778 | |
6779 | } | |
6780 | } | |
6781 | ||
c906108c | 6782 | static void |
fba45db2 | 6783 | catch_command (char *arg, int from_tty) |
c906108c SS |
6784 | { |
6785 | catch_command_1 (arg, 0, from_tty); | |
6786 | } | |
6787 | \f | |
6788 | ||
6789 | static void | |
fba45db2 | 6790 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6791 | { |
6792 | catch_command_1 (arg, 1, from_tty); | |
6793 | } | |
6794 | ||
80f8a6eb | 6795 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6796 | |
6797 | static void | |
fba45db2 | 6798 | clear_command (char *arg, int from_tty) |
c906108c | 6799 | { |
d6e956e5 VP |
6800 | struct breakpoint *b; |
6801 | VEC(breakpoint_p) *found = 0; | |
6802 | int ix; | |
c906108c SS |
6803 | int default_match; |
6804 | struct symtabs_and_lines sals; | |
6805 | struct symtab_and_line sal; | |
c906108c SS |
6806 | int i; |
6807 | ||
6808 | if (arg) | |
6809 | { | |
6810 | sals = decode_line_spec (arg, 1); | |
6811 | default_match = 0; | |
6812 | } | |
6813 | else | |
6814 | { | |
c5aa993b | 6815 | sals.sals = (struct symtab_and_line *) |
c906108c | 6816 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6817 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6818 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6819 | sal.line = default_breakpoint_line; |
6820 | sal.symtab = default_breakpoint_symtab; | |
6821 | sal.pc = default_breakpoint_address; | |
6822 | if (sal.symtab == 0) | |
8a3fe4f8 | 6823 | error (_("No source file specified.")); |
c906108c SS |
6824 | |
6825 | sals.sals[0] = sal; | |
6826 | sals.nelts = 1; | |
6827 | ||
6828 | default_match = 1; | |
6829 | } | |
6830 | ||
ed0616c6 VP |
6831 | /* We don't call resolve_sal_pc here. That's not |
6832 | as bad as it seems, because all existing breakpoints | |
6833 | typically have both file/line and pc set. So, if | |
6834 | clear is given file/line, we can match this to existing | |
6835 | breakpoint without obtaining pc at all. | |
6836 | ||
6837 | We only support clearing given the address explicitly | |
6838 | present in breakpoint table. Say, we've set breakpoint | |
6839 | at file:line. There were several PC values for that file:line, | |
6840 | due to optimization, all in one block. | |
6841 | We've picked one PC value. If "clear" is issued with another | |
6842 | PC corresponding to the same file:line, the breakpoint won't | |
6843 | be cleared. We probably can still clear the breakpoint, but | |
6844 | since the other PC value is never presented to user, user | |
6845 | can only find it by guessing, and it does not seem important | |
6846 | to support that. */ | |
6847 | ||
c906108c | 6848 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6849 | to it. Do it in two passes, solely to preserve the current |
6850 | behavior that from_tty is forced true if we delete more than | |
6851 | one breakpoint. */ | |
c906108c | 6852 | |
80f8a6eb | 6853 | found = NULL; |
c906108c SS |
6854 | for (i = 0; i < sals.nelts; i++) |
6855 | { | |
6856 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6857 | If line given (pc == 0), clear all bpts on specified line. |
6858 | If defaulting, clear all bpts on default line | |
c906108c | 6859 | or at default pc. |
c5aa993b JM |
6860 | |
6861 | defaulting sal.pc != 0 tests to do | |
6862 | ||
6863 | 0 1 pc | |
6864 | 1 1 pc _and_ line | |
6865 | 0 0 line | |
6866 | 1 0 <can't happen> */ | |
c906108c SS |
6867 | |
6868 | sal = sals.sals[i]; | |
c906108c | 6869 | |
d6e956e5 VP |
6870 | /* Find all matching breakpoints and add them to |
6871 | 'found'. */ | |
6872 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6873 | { |
0d381245 | 6874 | int match = 0; |
80f8a6eb MS |
6875 | /* Are we going to delete b? */ |
6876 | if (b->type != bp_none | |
6877 | && b->type != bp_watchpoint | |
6878 | && b->type != bp_hardware_watchpoint | |
6879 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6880 | && b->type != bp_access_watchpoint) |
6881 | { | |
6882 | struct bp_location *loc = b->loc; | |
6883 | for (; loc; loc = loc->next) | |
6884 | { | |
6885 | int pc_match = sal.pc | |
6886 | && (loc->address == sal.pc) | |
6887 | && (!section_is_overlay (loc->section) | |
6888 | || loc->section == sal.section); | |
6889 | int line_match = ((default_match || (0 == sal.pc)) | |
6890 | && b->source_file != NULL | |
6891 | && sal.symtab != NULL | |
6892 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6893 | && b->line_number == sal.line); | |
6894 | if (pc_match || line_match) | |
6895 | { | |
6896 | match = 1; | |
6897 | break; | |
6898 | } | |
6899 | } | |
6900 | } | |
6901 | ||
6902 | if (match) | |
d6e956e5 | 6903 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6904 | } |
80f8a6eb MS |
6905 | } |
6906 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6907 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6908 | { |
6909 | if (arg) | |
8a3fe4f8 | 6910 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6911 | else |
8a3fe4f8 | 6912 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6913 | } |
c906108c | 6914 | |
d6e956e5 | 6915 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6916 | from_tty = 1; /* Always report if deleted more than one */ |
6917 | if (from_tty) | |
a3f17187 | 6918 | { |
d6e956e5 | 6919 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6920 | printf_unfiltered (_("Deleted breakpoint ")); |
6921 | else | |
6922 | printf_unfiltered (_("Deleted breakpoints ")); | |
6923 | } | |
80f8a6eb | 6924 | breakpoints_changed (); |
d6e956e5 VP |
6925 | |
6926 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6927 | { |
c5aa993b | 6928 | if (from_tty) |
d6e956e5 VP |
6929 | printf_unfiltered ("%d ", b->number); |
6930 | delete_breakpoint (b); | |
c906108c | 6931 | } |
80f8a6eb MS |
6932 | if (from_tty) |
6933 | putchar_unfiltered ('\n'); | |
c906108c SS |
6934 | } |
6935 | \f | |
6936 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6937 | all breakpoints that are marked for deletion, whether hit or not. | |
6938 | This is called after any breakpoint is hit, or after errors. */ | |
6939 | ||
6940 | void | |
fba45db2 | 6941 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6942 | { |
6943 | struct breakpoint *b, *temp; | |
6944 | ||
6945 | for (; bs; bs = bs->next) | |
4f8d1dc6 | 6946 | if (bs->breakpoint_at && bs->breakpoint_at->owner->disposition == disp_del |
c906108c | 6947 | && bs->stop) |
4f8d1dc6 | 6948 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6949 | |
6950 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6951 | { |
b5de0fa7 | 6952 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6953 | delete_breakpoint (b); |
6954 | } | |
c906108c SS |
6955 | } |
6956 | ||
0d381245 | 6957 | static void |
74960c60 | 6958 | update_global_location_list (void) |
0d381245 | 6959 | { |
74960c60 VP |
6960 | struct breakpoint *b; |
6961 | struct bp_location **next = &bp_location_chain; | |
6962 | struct bp_location *loc; | |
6963 | struct bp_location *loc2; | |
6964 | struct gdb_exception e; | |
6965 | VEC(bp_location_p) *old_locations = NULL; | |
6966 | int ret; | |
6967 | int ix; | |
6968 | ||
6969 | /* Store old locations for future reference. */ | |
6970 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
6971 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 6972 | |
74960c60 VP |
6973 | bp_location_chain = NULL; |
6974 | ALL_BREAKPOINTS (b) | |
0d381245 | 6975 | { |
74960c60 | 6976 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 6977 | { |
74960c60 VP |
6978 | *next = loc; |
6979 | next = &(loc->global_next); | |
6980 | *next = NULL; | |
0d381245 | 6981 | } |
74960c60 VP |
6982 | } |
6983 | ||
6984 | /* Identify bp_location instances that are no longer present in the new | |
6985 | list, and therefore should be freed. Note that it's not necessary that | |
6986 | those locations should be removed from inferior -- if there's another | |
6987 | location at the same address (previously marked as duplicate), | |
6988 | we don't need to remove/insert the location. */ | |
6989 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
6990 | { | |
6991 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
6992 | have to free it. */ | |
6993 | int found_object = 0; | |
6994 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
6995 | if (loc2 == loc) | |
6996 | { | |
6997 | found_object = 1; | |
6998 | break; | |
6999 | } | |
7000 | ||
7001 | /* If this location is no longer present, and inserted, look if there's | |
7002 | maybe a new location at the same address. If so, mark that one | |
7003 | inserted, and don't remove this one. This is needed so that we | |
7004 | don't have a time window where a breakpoint at certain location is not | |
7005 | inserted. */ | |
7006 | ||
7007 | if (loc->inserted) | |
0d381245 | 7008 | { |
74960c60 VP |
7009 | /* If the location is inserted now, we might have to remove it. */ |
7010 | int keep = 0; | |
7011 | ||
7012 | if (found_object && should_be_inserted (loc)) | |
7013 | { | |
7014 | /* The location is still present in the location list, and still | |
7015 | should be inserted. Don't do anything. */ | |
7016 | keep = 1; | |
7017 | } | |
7018 | else | |
7019 | { | |
7020 | /* The location is either no longer present, or got disabled. | |
7021 | See if there's another location at the same address, in which | |
7022 | case we don't need to remove this one from the target. */ | |
7023 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7024 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7025 | { | |
7026 | /* For the sake of should_insert_location. The | |
7027 | call to check_duplicates will fix up this later. */ | |
7028 | loc2->duplicate = 0; | |
7029 | if (should_be_inserted (loc2) | |
7030 | && loc2 != loc && loc2->address == loc->address) | |
7031 | { | |
7032 | loc2->inserted = 1; | |
7033 | loc2->target_info = loc->target_info; | |
7034 | keep = 1; | |
7035 | break; | |
7036 | } | |
7037 | } | |
7038 | } | |
7039 | ||
7040 | if (!keep) | |
7041 | if (remove_breakpoint (loc, mark_uninserted)) | |
7042 | { | |
7043 | /* This is just about all we can do. We could keep this | |
7044 | location on the global list, and try to remove it next | |
7045 | time, but there's no particular reason why we will | |
7046 | succeed next time. | |
7047 | ||
7048 | Note that at this point, loc->owner is still valid, | |
7049 | as delete_breakpoint frees the breakpoint only | |
7050 | after calling us. */ | |
7051 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7052 | loc->owner->number); | |
7053 | } | |
0d381245 | 7054 | } |
74960c60 VP |
7055 | |
7056 | if (!found_object) | |
7057 | free_bp_location (loc); | |
7058 | } | |
7059 | ||
7060 | ALL_BREAKPOINTS (b) | |
7061 | { | |
7062 | check_duplicates (b); | |
0d381245 | 7063 | } |
74960c60 VP |
7064 | |
7065 | if (always_inserted_mode && target_has_execution) | |
7066 | insert_breakpoint_locations (); | |
7067 | } | |
7068 | ||
7069 | static void | |
7070 | update_global_location_list_nothrow (void) | |
7071 | { | |
7072 | struct gdb_exception e; | |
7073 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7074 | update_global_location_list (); | |
0d381245 VP |
7075 | } |
7076 | ||
53a5351d JM |
7077 | /* Delete a breakpoint and clean up all traces of it in the data |
7078 | structures. */ | |
c906108c SS |
7079 | |
7080 | void | |
fba45db2 | 7081 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7082 | { |
52f0bd74 AC |
7083 | struct breakpoint *b; |
7084 | bpstat bs; | |
74960c60 | 7085 | struct bp_location *loc, *next; |
c906108c | 7086 | |
8a3fe4f8 | 7087 | gdb_assert (bpt != NULL); |
c906108c SS |
7088 | |
7089 | /* Has this bp already been deleted? This can happen because multiple | |
7090 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7091 | ||
7092 | One example of this happening is a watchpoint's scope bp. When the | |
7093 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7094 | delete it. We also delete its scope bp. But the scope bp is marked | |
7095 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7096 | checked for auto-deleting bp's, which are deleted. | |
7097 | ||
7098 | A real solution to this problem might involve reference counts in bp's, | |
7099 | and/or giving them pointers back to their referencing bpstat's, and | |
7100 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7101 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7102 | if (bpt->type == bp_none) |
7103 | return; | |
7104 | ||
9a4105ab AC |
7105 | if (deprecated_delete_breakpoint_hook) |
7106 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 7107 | breakpoint_delete_event (bpt->number); |
c906108c | 7108 | |
c906108c SS |
7109 | if (breakpoint_chain == bpt) |
7110 | breakpoint_chain = bpt->next; | |
7111 | ||
c906108c SS |
7112 | ALL_BREAKPOINTS (b) |
7113 | if (b->next == bpt) | |
c5aa993b JM |
7114 | { |
7115 | b->next = bpt->next; | |
7116 | break; | |
7117 | } | |
c906108c | 7118 | |
c906108c | 7119 | free_command_lines (&bpt->commands); |
c906108c | 7120 | if (bpt->cond_string != NULL) |
b8c9b27d | 7121 | xfree (bpt->cond_string); |
c906108c | 7122 | if (bpt->addr_string != NULL) |
b8c9b27d | 7123 | xfree (bpt->addr_string); |
c906108c | 7124 | if (bpt->exp != NULL) |
b8c9b27d | 7125 | xfree (bpt->exp); |
c906108c | 7126 | if (bpt->exp_string != NULL) |
b8c9b27d | 7127 | xfree (bpt->exp_string); |
c906108c SS |
7128 | if (bpt->val != NULL) |
7129 | value_free (bpt->val); | |
7130 | if (bpt->source_file != NULL) | |
b8c9b27d | 7131 | xfree (bpt->source_file); |
c906108c | 7132 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7133 | xfree (bpt->dll_pathname); |
c906108c | 7134 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7135 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7136 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7137 | xfree (bpt->exec_pathname); |
c906108c SS |
7138 | |
7139 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7140 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7141 | We just check stop_bpstat for now. Note that we cannot just |
7142 | remove bpstats pointing at bpt from the stop_bpstat list | |
7143 | entirely, as breakpoint commands are associated with the bpstat; | |
7144 | if we remove it here, then the later call to | |
7145 | bpstat_do_actions (&stop_bpstat); | |
7146 | in event-top.c won't do anything, and temporary breakpoints | |
7147 | with commands won't work. */ | |
c906108c | 7148 | for (bs = stop_bpstat; bs; bs = bs->next) |
4f8d1dc6 | 7149 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) |
c906108c SS |
7150 | { |
7151 | bs->breakpoint_at = NULL; | |
c906108c | 7152 | bs->old_val = NULL; |
c2b8ed2c | 7153 | /* bs->commands will be freed later. */ |
c906108c | 7154 | } |
74960c60 VP |
7155 | |
7156 | /* Now that breakpoint is removed from breakpoint | |
7157 | list, update the global location list. This | |
7158 | will remove locations that used to belong to | |
7159 | this breakpoint. Do this before freeing | |
7160 | the breakpoint itself, since remove_breakpoint | |
7161 | looks at location's owner. It might be better | |
7162 | design to have location completely self-contained, | |
7163 | but it's not the case now. */ | |
7164 | update_global_location_list (); | |
7165 | ||
7166 | ||
c906108c SS |
7167 | /* On the chance that someone will soon try again to delete this same |
7168 | bp, we mark it as deleted before freeing its storage. */ | |
7169 | bpt->type = bp_none; | |
7170 | ||
b8c9b27d | 7171 | xfree (bpt); |
c906108c SS |
7172 | } |
7173 | ||
4d6140d9 AC |
7174 | static void |
7175 | do_delete_breakpoint_cleanup (void *b) | |
7176 | { | |
7177 | delete_breakpoint (b); | |
7178 | } | |
7179 | ||
7180 | struct cleanup * | |
7181 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7182 | { | |
7183 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7184 | } | |
7185 | ||
c906108c | 7186 | void |
fba45db2 | 7187 | delete_command (char *arg, int from_tty) |
c906108c SS |
7188 | { |
7189 | struct breakpoint *b, *temp; | |
7190 | ||
ea9365bb TT |
7191 | dont_repeat (); |
7192 | ||
c906108c SS |
7193 | if (arg == 0) |
7194 | { | |
7195 | int breaks_to_delete = 0; | |
7196 | ||
7197 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7198 | Do not delete internal or call-dummy breakpoints, these |
7199 | have to be deleted with an explicit breakpoint number argument. */ | |
7200 | ALL_BREAKPOINTS (b) | |
7201 | { | |
7202 | if (b->type != bp_call_dummy && | |
7203 | b->type != bp_shlib_event && | |
c4093a6a | 7204 | b->type != bp_thread_event && |
1900040c | 7205 | b->type != bp_overlay_event && |
c5aa993b | 7206 | b->number >= 0) |
973d738b DJ |
7207 | { |
7208 | breaks_to_delete = 1; | |
7209 | break; | |
7210 | } | |
c5aa993b | 7211 | } |
c906108c SS |
7212 | |
7213 | /* Ask user only if there are some breakpoints to delete. */ | |
7214 | if (!from_tty | |
e2e0b3e5 | 7215 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7216 | { |
c5aa993b JM |
7217 | ALL_BREAKPOINTS_SAFE (b, temp) |
7218 | { | |
7219 | if (b->type != bp_call_dummy && | |
7220 | b->type != bp_shlib_event && | |
c4093a6a | 7221 | b->type != bp_thread_event && |
1900040c | 7222 | b->type != bp_overlay_event && |
c5aa993b JM |
7223 | b->number >= 0) |
7224 | delete_breakpoint (b); | |
7225 | } | |
c906108c SS |
7226 | } |
7227 | } | |
7228 | else | |
7229 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7230 | } | |
7231 | ||
0d381245 VP |
7232 | static int |
7233 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7234 | { |
0d381245 VP |
7235 | for (; loc; loc = loc->next) |
7236 | if (!loc->shlib_disabled) | |
7237 | return 0; | |
7238 | return 1; | |
fe3f5fa8 VP |
7239 | } |
7240 | ||
776592bf DE |
7241 | /* Subroutine of update_breakpoint_locations to simplify it. |
7242 | Return non-zero if multiple fns in list LOC have the same name. | |
7243 | Null names are ignored. */ | |
7244 | ||
7245 | static int | |
7246 | ambiguous_names_p (struct bp_location *loc) | |
7247 | { | |
7248 | struct bp_location *l; | |
7249 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7250 | (int (*) (const void *, const void *)) streq, | |
7251 | NULL, xcalloc, xfree); | |
7252 | ||
7253 | for (l = loc; l != NULL; l = l->next) | |
7254 | { | |
7255 | const char **slot; | |
7256 | const char *name = l->function_name; | |
7257 | ||
7258 | /* Allow for some names to be NULL, ignore them. */ | |
7259 | if (name == NULL) | |
7260 | continue; | |
7261 | ||
7262 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7263 | INSERT); | |
7264 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7265 | NULL. */ | |
7266 | if (*slot != NULL) | |
7267 | { | |
7268 | htab_delete (htab); | |
7269 | return 1; | |
7270 | } | |
7271 | *slot = name; | |
7272 | } | |
7273 | ||
7274 | htab_delete (htab); | |
7275 | return 0; | |
7276 | } | |
7277 | ||
fe3f5fa8 | 7278 | static void |
0d381245 VP |
7279 | update_breakpoint_locations (struct breakpoint *b, |
7280 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7281 | { |
7282 | int i; | |
7283 | char *s; | |
0d381245 VP |
7284 | struct bp_location *existing_locations = b->loc; |
7285 | ||
7286 | /* If there's no new locations, and all existing locations | |
7287 | are pending, don't do anything. This optimizes | |
7288 | the common case where all locations are in the same | |
7289 | shared library, that was unloaded. We'd like to | |
7290 | retain the location, so that when the library | |
7291 | is loaded again, we don't loose the enabled/disabled | |
7292 | status of the individual locations. */ | |
7293 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7294 | return; |
7295 | ||
fe3f5fa8 VP |
7296 | b->loc = NULL; |
7297 | ||
0d381245 | 7298 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7299 | { |
0d381245 VP |
7300 | struct bp_location *new_loc = |
7301 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7302 | |
0d381245 VP |
7303 | /* Reparse conditions, they might contain references to the |
7304 | old symtab. */ | |
7305 | if (b->cond_string != NULL) | |
7306 | { | |
7307 | struct gdb_exception e; | |
fe3f5fa8 | 7308 | |
0d381245 VP |
7309 | s = b->cond_string; |
7310 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7311 | { | |
7312 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7313 | 0); | |
7314 | } | |
7315 | if (e.reason < 0) | |
7316 | { | |
7317 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7318 | b->number, e.message); | |
7319 | new_loc->enabled = 0; | |
7320 | } | |
7321 | } | |
fe3f5fa8 | 7322 | |
0d381245 VP |
7323 | if (b->source_file != NULL) |
7324 | xfree (b->source_file); | |
7325 | if (sals.sals[i].symtab == NULL) | |
7326 | b->source_file = NULL; | |
7327 | else | |
7328 | b->source_file = | |
7329 | savestring (sals.sals[i].symtab->filename, | |
7330 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7331 | |
0d381245 VP |
7332 | if (b->line_number == 0) |
7333 | b->line_number = sals.sals[i].line; | |
7334 | } | |
fe3f5fa8 | 7335 | |
0d381245 VP |
7336 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7337 | { | |
7338 | struct bp_location *e = existing_locations; | |
776592bf DE |
7339 | /* If there are multiple breakpoints with the same function name, |
7340 | e.g. for inline functions, comparing function names won't work. | |
7341 | Instead compare pc addresses; this is just a heuristic as things | |
7342 | may have moved, but in practice it gives the correct answer | |
7343 | often enough until a better solution is found. */ | |
7344 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7345 | ||
0d381245 VP |
7346 | for (; e; e = e->next) |
7347 | { | |
7348 | if (!e->enabled && e->function_name) | |
7349 | { | |
7350 | struct bp_location *l = b->loc; | |
776592bf DE |
7351 | if (have_ambiguous_names) |
7352 | { | |
7353 | for (; l; l = l->next) | |
7354 | if (e->address == l->address) | |
7355 | { | |
7356 | l->enabled = 0; | |
7357 | break; | |
7358 | } | |
7359 | } | |
7360 | else | |
7361 | { | |
7362 | for (; l; l = l->next) | |
7363 | if (l->function_name | |
7364 | && strcmp (e->function_name, l->function_name) == 0) | |
7365 | { | |
7366 | l->enabled = 0; | |
7367 | break; | |
7368 | } | |
7369 | } | |
0d381245 VP |
7370 | } |
7371 | } | |
7372 | } | |
fe3f5fa8 | 7373 | |
74960c60 | 7374 | update_global_location_list (); |
fe3f5fa8 VP |
7375 | } |
7376 | ||
7377 | ||
c906108c SS |
7378 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7379 | The value we return ends up being the return value from catch_errors. | |
7380 | Unused in this case. */ | |
7381 | ||
7382 | static int | |
4efb68b1 | 7383 | breakpoint_re_set_one (void *bint) |
c906108c | 7384 | { |
53a5351d JM |
7385 | /* get past catch_errs */ |
7386 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7387 | struct value *mark; |
7388 | int i; | |
fe3f5fa8 VP |
7389 | int not_found = 0; |
7390 | int *not_found_ptr = ¬_found; | |
7391 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7392 | struct symtabs_and_lines expanded; |
c906108c | 7393 | char *s; |
b5de0fa7 | 7394 | enum enable_state save_enable; |
fe3f5fa8 VP |
7395 | struct gdb_exception e; |
7396 | ||
c906108c SS |
7397 | |
7398 | switch (b->type) | |
7399 | { | |
7400 | case bp_none: | |
8a3fe4f8 | 7401 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7402 | b->number); |
c906108c SS |
7403 | return 0; |
7404 | case bp_breakpoint: | |
7405 | case bp_hardware_breakpoint: | |
7406 | case bp_catch_load: | |
7407 | case bp_catch_unload: | |
7408 | if (b->addr_string == NULL) | |
7409 | { | |
7410 | /* Anything without a string can't be re-set. */ | |
7411 | delete_breakpoint (b); | |
7412 | return 0; | |
7413 | } | |
c906108c SS |
7414 | |
7415 | set_language (b->language); | |
7416 | input_radix = b->input_radix; | |
7417 | s = b->addr_string; | |
fe3f5fa8 | 7418 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7419 | { |
fe3f5fa8 VP |
7420 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7421 | not_found_ptr); | |
7422 | } | |
7423 | if (e.reason < 0) | |
7424 | { | |
7425 | int not_found_and_ok = 0; | |
7426 | /* For pending breakpoints, it's expected that parsing | |
7427 | will fail until the right shared library is loaded. | |
7428 | User has already told to create pending breakpoints and | |
7429 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7430 | state, then user already saw the message about that breakpoint | |
7431 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7432 | if (not_found |
7433 | && (b->condition_not_parsed | |
7434 | || (b->loc && b->loc->shlib_disabled) | |
7435 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7436 | not_found_and_ok = 1; |
7437 | ||
7438 | if (!not_found_and_ok) | |
c906108c | 7439 | { |
fe3f5fa8 VP |
7440 | /* We surely don't want to warn about the same breakpoint |
7441 | 10 times. One solution, implemented here, is disable | |
7442 | the breakpoint on error. Another solution would be to | |
7443 | have separate 'warning emitted' flag. Since this | |
7444 | happens only when a binary has changed, I don't know | |
7445 | which approach is better. */ | |
7446 | b->enable_state = bp_disabled; | |
7447 | throw_exception (e); | |
c906108c | 7448 | } |
fe3f5fa8 | 7449 | } |
c906108c | 7450 | |
fe3f5fa8 VP |
7451 | if (not_found) |
7452 | break; | |
7453 | ||
7454 | gdb_assert (sals.nelts == 1); | |
7455 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7456 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7457 | { |
7458 | char *cond_string = 0; | |
7459 | int thread = -1; | |
7460 | find_condition_and_thread (s, sals.sals[0].pc, | |
7461 | &cond_string, &thread); | |
7462 | if (cond_string) | |
7463 | b->cond_string = cond_string; | |
7464 | b->thread = thread; | |
0d381245 | 7465 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7466 | } |
ed0616c6 VP |
7467 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7468 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7469 | |
b8c9b27d | 7470 | xfree (sals.sals); |
c906108c SS |
7471 | break; |
7472 | ||
7473 | case bp_watchpoint: | |
7474 | case bp_hardware_watchpoint: | |
7475 | case bp_read_watchpoint: | |
7476 | case bp_access_watchpoint: | |
0b3de036 VP |
7477 | /* Watchpoint can be either on expression using entirely global variables, |
7478 | or it can be on local variables. | |
7479 | ||
7480 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7481 | across program restarts. Since they can use variables from shared | |
7482 | libraries, we need to reparse expression as libraries are loaded | |
7483 | and unloaded. | |
7484 | ||
7485 | Watchpoints on local variables can also change meaning as result | |
7486 | of solib event. For example, if a watchpoint uses both a local and | |
7487 | a global variables in expression, it's a local watchpoint, but | |
7488 | unloading of a shared library will make the expression invalid. | |
7489 | This is not a very common use case, but we still re-evaluate | |
7490 | expression, to avoid surprises to the user. | |
7491 | ||
7492 | Note that for local watchpoints, we re-evaluate it only if | |
7493 | watchpoints frame id is still valid. If it's not, it means | |
7494 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7495 | I'm not sure we'll ever be called in this case. | |
7496 | ||
7497 | If a local watchpoint's frame id is still valid, then | |
7498 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7499 | ||
7500 | Don't do anything about disabled watchpoints, since they will | |
7501 | be reevaluated again when enabled. */ | |
a5606eee | 7502 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7503 | break; |
c5aa993b JM |
7504 | /* We needn't really do anything to reset these, since the mask |
7505 | that requests them is unaffected by e.g., new libraries being | |
7506 | loaded. */ | |
c906108c SS |
7507 | case bp_catch_fork: |
7508 | case bp_catch_vfork: | |
7509 | case bp_catch_exec: | |
7510 | break; | |
c5aa993b | 7511 | |
c906108c | 7512 | default: |
a3f17187 | 7513 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7514 | /* fall through */ |
611c83ae PA |
7515 | /* Delete overlay event breakpoints; they will be reset later by |
7516 | breakpoint_re_set. */ | |
1900040c | 7517 | case bp_overlay_event: |
c906108c SS |
7518 | delete_breakpoint (b); |
7519 | break; | |
7520 | ||
c5aa993b JM |
7521 | /* This breakpoint is special, it's set up when the inferior |
7522 | starts and we really don't want to touch it. */ | |
c906108c SS |
7523 | case bp_shlib_event: |
7524 | ||
c4093a6a JM |
7525 | /* Like bp_shlib_event, this breakpoint type is special. |
7526 | Once it is set up, we do not want to touch it. */ | |
7527 | case bp_thread_event: | |
7528 | ||
c5aa993b JM |
7529 | /* Keep temporary breakpoints, which can be encountered when we step |
7530 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7531 | Otherwise these should have been blown away via the cleanup chain | |
7532 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7533 | case bp_until: |
7534 | case bp_finish: | |
7535 | case bp_watchpoint_scope: | |
7536 | case bp_call_dummy: | |
7537 | case bp_step_resume: | |
611c83ae PA |
7538 | case bp_longjmp: |
7539 | case bp_longjmp_resume: | |
c906108c SS |
7540 | break; |
7541 | } | |
7542 | ||
7543 | return 0; | |
7544 | } | |
7545 | ||
7546 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7547 | void | |
fba45db2 | 7548 | breakpoint_re_set (void) |
c906108c SS |
7549 | { |
7550 | struct breakpoint *b, *temp; | |
7551 | enum language save_language; | |
7552 | int save_input_radix; | |
c5aa993b | 7553 | |
c906108c SS |
7554 | save_language = current_language->la_language; |
7555 | save_input_radix = input_radix; | |
7556 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7557 | { |
53a5351d | 7558 | /* Format possible error msg */ |
fe3f5fa8 | 7559 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7560 | b->number); |
7561 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7562 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7563 | do_cleanups (cleanups); |
c5aa993b | 7564 | } |
c906108c SS |
7565 | set_language (save_language); |
7566 | input_radix = save_input_radix; | |
1900040c MS |
7567 | |
7568 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7569 | } |
7570 | \f | |
c906108c SS |
7571 | /* Reset the thread number of this breakpoint: |
7572 | ||
7573 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7574 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7575 | void |
fba45db2 | 7576 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7577 | { |
7578 | if (b->thread != -1) | |
7579 | { | |
39f77062 KB |
7580 | if (in_thread_list (inferior_ptid)) |
7581 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7582 | } |
7583 | } | |
7584 | ||
03ac34d5 MS |
7585 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7586 | If from_tty is nonzero, it prints a message to that effect, | |
7587 | which ends with a period (no newline). */ | |
7588 | ||
c906108c | 7589 | void |
fba45db2 | 7590 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7591 | { |
52f0bd74 | 7592 | struct breakpoint *b; |
c906108c SS |
7593 | |
7594 | if (count < 0) | |
7595 | count = 0; | |
7596 | ||
7597 | ALL_BREAKPOINTS (b) | |
7598 | if (b->number == bptnum) | |
c5aa993b JM |
7599 | { |
7600 | b->ignore_count = count; | |
221ea385 KS |
7601 | if (from_tty) |
7602 | { | |
7603 | if (count == 0) | |
a3f17187 | 7604 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7605 | bptnum); |
7606 | else if (count == 1) | |
a3f17187 | 7607 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7608 | bptnum); |
7609 | else | |
a3f17187 | 7610 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7611 | count, bptnum); |
7612 | } | |
c5aa993b | 7613 | breakpoints_changed (); |
221ea385 | 7614 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7615 | return; |
7616 | } | |
c906108c | 7617 | |
8a3fe4f8 | 7618 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7619 | } |
7620 | ||
7621 | /* Clear the ignore counts of all breakpoints. */ | |
7622 | void | |
fba45db2 | 7623 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7624 | { |
7625 | struct breakpoint *b; | |
7626 | ||
7627 | ALL_BREAKPOINTS (b) | |
7628 | b->ignore_count = 0; | |
7629 | } | |
7630 | ||
7631 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7632 | ||
7633 | static void | |
fba45db2 | 7634 | ignore_command (char *args, int from_tty) |
c906108c SS |
7635 | { |
7636 | char *p = args; | |
52f0bd74 | 7637 | int num; |
c906108c SS |
7638 | |
7639 | if (p == 0) | |
e2e0b3e5 | 7640 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7641 | |
c906108c | 7642 | num = get_number (&p); |
5c44784c | 7643 | if (num == 0) |
8a3fe4f8 | 7644 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7645 | if (*p == 0) |
8a3fe4f8 | 7646 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7647 | |
7648 | set_ignore_count (num, | |
7649 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7650 | from_tty); | |
221ea385 KS |
7651 | if (from_tty) |
7652 | printf_filtered ("\n"); | |
c906108c SS |
7653 | } |
7654 | \f | |
7655 | /* Call FUNCTION on each of the breakpoints | |
7656 | whose numbers are given in ARGS. */ | |
7657 | ||
7658 | static void | |
831662b3 | 7659 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7660 | { |
52f0bd74 | 7661 | char *p = args; |
c906108c | 7662 | char *p1; |
52f0bd74 AC |
7663 | int num; |
7664 | struct breakpoint *b, *tmp; | |
11cf8741 | 7665 | int match; |
c906108c SS |
7666 | |
7667 | if (p == 0) | |
e2e0b3e5 | 7668 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7669 | |
7670 | while (*p) | |
7671 | { | |
11cf8741 | 7672 | match = 0; |
c906108c | 7673 | p1 = p; |
c5aa993b | 7674 | |
5c44784c JM |
7675 | num = get_number_or_range (&p1); |
7676 | if (num == 0) | |
c5aa993b | 7677 | { |
8a3fe4f8 | 7678 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7679 | } |
7680 | else | |
7681 | { | |
7682 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7683 | if (b->number == num) | |
7684 | { | |
7685 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7686 | match = 1; |
5c44784c JM |
7687 | function (b); |
7688 | if (related_breakpoint) | |
7689 | function (related_breakpoint); | |
11cf8741 | 7690 | break; |
5c44784c | 7691 | } |
11cf8741 | 7692 | if (match == 0) |
a3f17187 | 7693 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7694 | } |
c906108c SS |
7695 | p = p1; |
7696 | } | |
7697 | } | |
7698 | ||
0d381245 VP |
7699 | static struct bp_location * |
7700 | find_location_by_number (char *number) | |
7701 | { | |
7702 | char *dot = strchr (number, '.'); | |
7703 | char *p1; | |
7704 | int bp_num; | |
7705 | int loc_num; | |
7706 | struct breakpoint *b; | |
7707 | struct bp_location *loc; | |
7708 | ||
7709 | *dot = '\0'; | |
7710 | ||
7711 | p1 = number; | |
7712 | bp_num = get_number_or_range (&p1); | |
7713 | if (bp_num == 0) | |
7714 | error (_("Bad breakpoint number '%s'"), number); | |
7715 | ||
7716 | ALL_BREAKPOINTS (b) | |
7717 | if (b->number == bp_num) | |
7718 | { | |
7719 | break; | |
7720 | } | |
7721 | ||
7722 | if (!b || b->number != bp_num) | |
7723 | error (_("Bad breakpoint number '%s'"), number); | |
7724 | ||
7725 | p1 = dot+1; | |
7726 | loc_num = get_number_or_range (&p1); | |
7727 | if (loc_num == 0) | |
7728 | error (_("Bad breakpoint location number '%s'"), number); | |
7729 | ||
7730 | --loc_num; | |
7731 | loc = b->loc; | |
7732 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7733 | ; | |
7734 | if (!loc) | |
7735 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7736 | ||
7737 | return loc; | |
7738 | } | |
7739 | ||
7740 | ||
1900040c MS |
7741 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7742 | If from_tty is nonzero, it prints a message to that effect, | |
7743 | which ends with a period (no newline). */ | |
7744 | ||
c906108c | 7745 | void |
fba45db2 | 7746 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7747 | { |
7748 | /* Never disable a watchpoint scope breakpoint; we want to | |
7749 | hit them when we leave scope so we can delete both the | |
7750 | watchpoint and its scope breakpoint at that time. */ | |
7751 | if (bpt->type == bp_watchpoint_scope) | |
7752 | return; | |
7753 | ||
c2c6d25f | 7754 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7755 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7756 | return; |
7757 | ||
b5de0fa7 | 7758 | bpt->enable_state = bp_disabled; |
c906108c | 7759 | |
74960c60 | 7760 | update_global_location_list (); |
c906108c | 7761 | |
9a4105ab AC |
7762 | if (deprecated_modify_breakpoint_hook) |
7763 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7764 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7765 | } |
7766 | ||
c906108c | 7767 | static void |
fba45db2 | 7768 | disable_command (char *args, int from_tty) |
c906108c | 7769 | { |
52f0bd74 | 7770 | struct breakpoint *bpt; |
c906108c SS |
7771 | if (args == 0) |
7772 | ALL_BREAKPOINTS (bpt) | |
7773 | switch (bpt->type) | |
c5aa993b JM |
7774 | { |
7775 | case bp_none: | |
8a3fe4f8 | 7776 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7777 | bpt->number); |
c5aa993b JM |
7778 | continue; |
7779 | case bp_breakpoint: | |
7780 | case bp_catch_load: | |
7781 | case bp_catch_unload: | |
7782 | case bp_catch_fork: | |
7783 | case bp_catch_vfork: | |
7784 | case bp_catch_exec: | |
c5aa993b JM |
7785 | case bp_hardware_breakpoint: |
7786 | case bp_watchpoint: | |
7787 | case bp_hardware_watchpoint: | |
7788 | case bp_read_watchpoint: | |
7789 | case bp_access_watchpoint: | |
7790 | disable_breakpoint (bpt); | |
7791 | default: | |
7792 | continue; | |
7793 | } | |
0d381245 VP |
7794 | else if (strchr (args, '.')) |
7795 | { | |
7796 | struct bp_location *loc = find_location_by_number (args); | |
7797 | if (loc) | |
7798 | loc->enabled = 0; | |
74960c60 | 7799 | update_global_location_list (); |
0d381245 | 7800 | } |
c906108c SS |
7801 | else |
7802 | map_breakpoint_numbers (args, disable_breakpoint); | |
7803 | } | |
7804 | ||
7805 | static void | |
fba45db2 | 7806 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7807 | { |
c906108c SS |
7808 | int target_resources_ok, other_type_used; |
7809 | struct value *mark; | |
7810 | ||
7811 | if (bpt->type == bp_hardware_breakpoint) | |
7812 | { | |
7813 | int i; | |
c5aa993b | 7814 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7815 | target_resources_ok = |
7816 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7817 | i + 1, 0); | |
c906108c | 7818 | if (target_resources_ok == 0) |
8a3fe4f8 | 7819 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7820 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7821 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7822 | } |
7823 | ||
fe3f5fa8 VP |
7824 | if (bpt->type == bp_watchpoint || |
7825 | bpt->type == bp_hardware_watchpoint || | |
7826 | bpt->type == bp_read_watchpoint || | |
7827 | bpt->type == bp_access_watchpoint) | |
c906108c | 7828 | { |
fe3f5fa8 VP |
7829 | struct frame_id saved_frame_id; |
7830 | ||
7831 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7832 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7833 | { |
fe3f5fa8 VP |
7834 | struct frame_info *fr = |
7835 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7836 | if (fr == NULL) | |
c906108c | 7837 | { |
fe3f5fa8 VP |
7838 | printf_filtered (_("\ |
7839 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7840 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7841 | return; |
7842 | } | |
fe3f5fa8 | 7843 | select_frame (fr); |
c906108c | 7844 | } |
0101ce28 | 7845 | |
b4c291bb KH |
7846 | if (bpt->val) |
7847 | value_free (bpt->val); | |
fe3f5fa8 | 7848 | mark = value_mark (); |
fa4727a6 DJ |
7849 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7850 | if (bpt->val) | |
7851 | release_value (bpt->val); | |
7852 | bpt->val_valid = 1; | |
7853 | ||
fe3f5fa8 VP |
7854 | if (bpt->type == bp_hardware_watchpoint || |
7855 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7856 | bpt->type == bp_access_watchpoint) |
7857 | { | |
fe3f5fa8 VP |
7858 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7859 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7860 | |
fe3f5fa8 VP |
7861 | /* Hack around 'unused var' error for some targets here */ |
7862 | (void) mem_cnt, (void) i; | |
7863 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7864 | bpt->type, i + mem_cnt, other_type_used); | |
7865 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7866 | bp_watchpoint in the following condition */ | |
7867 | if (target_resources_ok < 0) | |
c5aa993b | 7868 | { |
fe3f5fa8 | 7869 | printf_filtered (_("\ |
c906108c | 7870 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7871 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7872 | value_free_to_mark (mark); |
7873 | return; | |
c5aa993b JM |
7874 | } |
7875 | } | |
fe3f5fa8 VP |
7876 | |
7877 | select_frame (frame_find_by_id (saved_frame_id)); | |
7878 | value_free_to_mark (mark); | |
c906108c | 7879 | } |
0101ce28 | 7880 | |
b4c291bb KH |
7881 | if (bpt->enable_state != bp_permanent) |
7882 | bpt->enable_state = bp_enabled; | |
7883 | bpt->disposition = disposition; | |
74960c60 | 7884 | update_global_location_list (); |
b4c291bb KH |
7885 | breakpoints_changed (); |
7886 | ||
9a4105ab AC |
7887 | if (deprecated_modify_breakpoint_hook) |
7888 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7889 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7890 | } |
7891 | ||
fe3f5fa8 | 7892 | |
c906108c | 7893 | void |
fba45db2 | 7894 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7895 | { |
7896 | do_enable_breakpoint (bpt, bpt->disposition); | |
7897 | } | |
7898 | ||
7899 | /* The enable command enables the specified breakpoints (or all defined | |
7900 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7901 | in stopping the inferior. */ |
c906108c | 7902 | |
c906108c | 7903 | static void |
fba45db2 | 7904 | enable_command (char *args, int from_tty) |
c906108c | 7905 | { |
52f0bd74 | 7906 | struct breakpoint *bpt; |
c906108c SS |
7907 | if (args == 0) |
7908 | ALL_BREAKPOINTS (bpt) | |
7909 | switch (bpt->type) | |
c5aa993b JM |
7910 | { |
7911 | case bp_none: | |
8a3fe4f8 | 7912 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7913 | bpt->number); |
c5aa993b JM |
7914 | continue; |
7915 | case bp_breakpoint: | |
7916 | case bp_catch_load: | |
7917 | case bp_catch_unload: | |
7918 | case bp_catch_fork: | |
7919 | case bp_catch_vfork: | |
7920 | case bp_catch_exec: | |
c5aa993b JM |
7921 | case bp_hardware_breakpoint: |
7922 | case bp_watchpoint: | |
7923 | case bp_hardware_watchpoint: | |
7924 | case bp_read_watchpoint: | |
7925 | case bp_access_watchpoint: | |
7926 | enable_breakpoint (bpt); | |
7927 | default: | |
7928 | continue; | |
7929 | } | |
0d381245 VP |
7930 | else if (strchr (args, '.')) |
7931 | { | |
7932 | struct bp_location *loc = find_location_by_number (args); | |
7933 | if (loc) | |
7934 | loc->enabled = 1; | |
74960c60 | 7935 | update_global_location_list (); |
0d381245 | 7936 | } |
c906108c SS |
7937 | else |
7938 | map_breakpoint_numbers (args, enable_breakpoint); | |
7939 | } | |
7940 | ||
7941 | static void | |
fba45db2 | 7942 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7943 | { |
b5de0fa7 | 7944 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7945 | } |
7946 | ||
c906108c | 7947 | static void |
fba45db2 | 7948 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7949 | { |
7950 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7951 | } | |
7952 | ||
7953 | static void | |
fba45db2 | 7954 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7955 | { |
b5de0fa7 | 7956 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7957 | } |
7958 | ||
c906108c | 7959 | static void |
fba45db2 | 7960 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7961 | { |
7962 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7963 | } | |
7964 | \f | |
fa8d40ab JJ |
7965 | static void |
7966 | set_breakpoint_cmd (char *args, int from_tty) | |
7967 | { | |
7968 | } | |
7969 | ||
7970 | static void | |
7971 | show_breakpoint_cmd (char *args, int from_tty) | |
7972 | { | |
7973 | } | |
7974 | ||
c906108c SS |
7975 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7976 | ||
7977 | struct symtabs_and_lines | |
fba45db2 | 7978 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7979 | { |
7980 | struct symtabs_and_lines sals; | |
7981 | if (string == 0) | |
8a3fe4f8 | 7982 | error (_("Empty line specification.")); |
c906108c SS |
7983 | if (default_breakpoint_valid) |
7984 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7985 | default_breakpoint_symtab, |
7986 | default_breakpoint_line, | |
68219205 | 7987 | (char ***) NULL, NULL); |
c906108c SS |
7988 | else |
7989 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7990 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7991 | if (*string) |
8a3fe4f8 | 7992 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7993 | return sals; |
7994 | } | |
8181d85f DJ |
7995 | |
7996 | /* Create and insert a raw software breakpoint at PC. Return an | |
7997 | identifier, which should be used to remove the breakpoint later. | |
7998 | In general, places which call this should be using something on the | |
7999 | breakpoint chain instead; this function should be eliminated | |
8000 | someday. */ | |
8001 | ||
8002 | void * | |
8003 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8004 | { | |
8005 | struct bp_target_info *bp_tgt; | |
8006 | ||
8007 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8008 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8009 | ||
8010 | bp_tgt->placed_address = pc; | |
8011 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8012 | { | |
8013 | /* Could not insert the breakpoint. */ | |
8014 | xfree (bp_tgt); | |
8015 | return NULL; | |
8016 | } | |
8017 | ||
8018 | return bp_tgt; | |
8019 | } | |
8020 | ||
8021 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8022 | ||
8023 | int | |
8024 | deprecated_remove_raw_breakpoint (void *bp) | |
8025 | { | |
8026 | struct bp_target_info *bp_tgt = bp; | |
8027 | int ret; | |
8028 | ||
8029 | ret = target_remove_breakpoint (bp_tgt); | |
8030 | xfree (bp_tgt); | |
8031 | ||
8032 | return ret; | |
8033 | } | |
8034 | ||
8035 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8036 | ||
8037 | static void *single_step_breakpoints[2]; | |
8038 | ||
8039 | /* Create and insert a breakpoint for software single step. */ | |
8040 | ||
8041 | void | |
8042 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8043 | { | |
8044 | void **bpt_p; | |
8045 | ||
8046 | if (single_step_breakpoints[0] == NULL) | |
8047 | bpt_p = &single_step_breakpoints[0]; | |
8048 | else | |
8049 | { | |
8050 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8051 | bpt_p = &single_step_breakpoints[1]; | |
8052 | } | |
8053 | ||
8054 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8055 | to only create the breakpoints once, and actually put them on the | |
8056 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8057 | adjust the addresses each time they were needed. Doing this requires | |
8058 | corresponding changes elsewhere where single step breakpoints are | |
8059 | handled, however. So, for now, we use this. */ | |
8060 | ||
8061 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8062 | if (*bpt_p == NULL) | |
1893a4c0 | 8063 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8064 | paddr_nz (next_pc)); |
8065 | } | |
8066 | ||
8067 | /* Remove and delete any breakpoints used for software single step. */ | |
8068 | ||
8069 | void | |
8070 | remove_single_step_breakpoints (void) | |
8071 | { | |
8072 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8073 | ||
8074 | /* See insert_single_step_breakpoint for more about this deprecated | |
8075 | call. */ | |
8076 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8077 | single_step_breakpoints[0] = NULL; | |
8078 | ||
8079 | if (single_step_breakpoints[1] != NULL) | |
8080 | { | |
8081 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8082 | single_step_breakpoints[1] = NULL; | |
8083 | } | |
8084 | } | |
8085 | ||
1aafd4da UW |
8086 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8087 | ||
8088 | static int | |
8089 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8090 | { | |
8091 | int i; | |
8092 | ||
8093 | for (i = 0; i < 2; i++) | |
8094 | { | |
8095 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8096 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8097 | return 1; | |
8098 | } | |
8099 | ||
8100 | return 0; | |
8101 | } | |
8102 | ||
74960c60 VP |
8103 | int breakpoints_always_inserted_mode (void) |
8104 | { | |
8105 | return always_inserted_mode; | |
8106 | } | |
8107 | ||
c906108c | 8108 | \f |
31e2b00f AS |
8109 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8110 | It is defined as a macro to prevent duplication. | |
8111 | COMMAND should be a string constant containing the name of the command. */ | |
8112 | #define BREAK_ARGS_HELP(command) \ | |
8113 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8114 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8115 | If a line number is specified, break at start of code for that line.\n\ | |
8116 | If a function is specified, break at start of code for that function.\n\ | |
8117 | If an address is specified, break at that exact address.\n\ | |
8118 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8119 | This is useful for breaking on return to a stack frame.\n\ | |
8120 | \n\ | |
8121 | THREADNUM is the number from \"info threads\".\n\ | |
8122 | CONDITION is a boolean expression.\n\ | |
8123 | \n\ | |
8124 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8125 | \n\ | |
8126 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8127 | ||
c906108c | 8128 | void |
fba45db2 | 8129 | _initialize_breakpoint (void) |
c906108c | 8130 | { |
fa8d40ab JJ |
8131 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8132 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8133 | struct cmd_list_element *c; |
8134 | ||
84acb35a | 8135 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8136 | |
c906108c SS |
8137 | breakpoint_chain = 0; |
8138 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8139 | before a breakpoint is set. */ | |
8140 | breakpoint_count = 0; | |
8141 | ||
1bedd215 AC |
8142 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8143 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8144 | Usage is `ignore N COUNT'.")); | |
c906108c | 8145 | if (xdb_commands) |
c5aa993b | 8146 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8147 | |
1bedd215 AC |
8148 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8149 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8150 | Give breakpoint number as argument after \"commands\".\n\ |
8151 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8152 | The commands themselves follow starting on the next line.\n\ | |
8153 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8154 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8155 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8156 | |
1bedd215 AC |
8157 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8158 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8159 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8160 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8161 | |
1bedd215 | 8162 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8163 | Set a temporary breakpoint.\n\ |
c906108c SS |
8164 | Like \"break\" except the breakpoint is only temporary,\n\ |
8165 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8166 | by using \"enable delete\" on the breakpoint number.\n\ |
8167 | \n" | |
8168 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8169 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8170 | |
1bedd215 | 8171 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8172 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8173 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8174 | some target hardware may not have this support.\n\ |
8175 | \n" | |
8176 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8177 | set_cmd_completer (c, location_completer); |
c906108c | 8178 | |
1bedd215 | 8179 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8180 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8181 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8182 | so it will be deleted when hit.\n\ |
8183 | \n" | |
8184 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8185 | set_cmd_completer (c, location_completer); |
c906108c | 8186 | |
1bedd215 AC |
8187 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8188 | Enable some breakpoints.\n\ | |
c906108c SS |
8189 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8190 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8191 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8192 | With a subcommand you can enable temporarily."), |
c906108c SS |
8193 | &enablelist, "enable ", 1, &cmdlist); |
8194 | if (xdb_commands) | |
1bedd215 AC |
8195 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8196 | Enable some breakpoints.\n\ | |
c906108c SS |
8197 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8198 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8199 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8200 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8201 | |
8202 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8203 | ||
1bedd215 AC |
8204 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8205 | Enable some breakpoints.\n\ | |
c906108c SS |
8206 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8207 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8208 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8209 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8210 | |
1a966eab AC |
8211 | add_cmd ("once", no_class, enable_once_command, _("\ |
8212 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8213 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8214 | &enablebreaklist); |
8215 | ||
1a966eab AC |
8216 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8217 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8218 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8219 | &enablebreaklist); |
8220 | ||
1a966eab AC |
8221 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8222 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8223 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8224 | &enablelist); |
8225 | ||
1a966eab AC |
8226 | add_cmd ("once", no_class, enable_once_command, _("\ |
8227 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8228 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8229 | &enablelist); |
8230 | ||
1bedd215 AC |
8231 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8232 | Disable some breakpoints.\n\ | |
c906108c SS |
8233 | Arguments are breakpoint numbers with spaces in between.\n\ |
8234 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8235 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8236 | &disablelist, "disable ", 1, &cmdlist); |
8237 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8238 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8239 | if (xdb_commands) | |
1bedd215 AC |
8240 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8241 | Disable some breakpoints.\n\ | |
c906108c SS |
8242 | Arguments are breakpoint numbers with spaces in between.\n\ |
8243 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8244 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8245 | |
1a966eab AC |
8246 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8247 | Disable some breakpoints.\n\ | |
c906108c SS |
8248 | Arguments are breakpoint numbers with spaces in between.\n\ |
8249 | To disable all breakpoints, give no argument.\n\ | |
8250 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8251 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8252 | &disablelist); |
8253 | ||
1bedd215 AC |
8254 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8255 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8256 | Arguments are breakpoint numbers with spaces in between.\n\ |
8257 | To delete all breakpoints, give no argument.\n\ | |
8258 | \n\ | |
8259 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8260 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8261 | &deletelist, "delete ", 1, &cmdlist); |
8262 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8263 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8264 | if (xdb_commands) |
1bedd215 AC |
8265 | add_com ("db", class_breakpoint, delete_command, _("\ |
8266 | Delete some breakpoints.\n\ | |
c906108c | 8267 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8268 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8269 | |
1a966eab AC |
8270 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8271 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8272 | Arguments are breakpoint numbers with spaces in between.\n\ |
8273 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8274 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8275 | &deletelist); |
8276 | ||
1bedd215 AC |
8277 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8278 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8279 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8280 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8281 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8282 | If an address is specified, breakpoints at that address are cleared.\n\ |
8283 | \n\ | |
8284 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8285 | is executing in.\n\ |
8286 | \n\ | |
1bedd215 | 8287 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8288 | |
1bedd215 | 8289 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8290 | Set breakpoint at specified line or function.\n" |
8291 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8292 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8293 | |
c906108c SS |
8294 | add_com_alias ("b", "break", class_run, 1); |
8295 | add_com_alias ("br", "break", class_run, 1); | |
8296 | add_com_alias ("bre", "break", class_run, 1); | |
8297 | add_com_alias ("brea", "break", class_run, 1); | |
8298 | ||
502fd408 | 8299 | if (xdb_commands) |
c906108c SS |
8300 | { |
8301 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8302 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8303 | } |
8304 | ||
8305 | if (dbx_commands) | |
8306 | { | |
1bedd215 AC |
8307 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8308 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8309 | &stoplist, "stop ", 1, &cmdlist); |
8310 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8311 | _("Break in function or address."), &stoplist); |
c5aa993b | 8312 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8313 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8314 | add_com ("status", class_info, breakpoints_info, _("\ |
8315 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8316 | The \"Type\" column indicates one of:\n\ |
8317 | \tbreakpoint - normal breakpoint\n\ | |
8318 | \twatchpoint - watchpoint\n\ | |
8319 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8320 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8321 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8322 | address and file/line number respectively.\n\ |
8323 | \n\ | |
8324 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8325 | are set to the address of the last breakpoint listed unless the command\n\ |
8326 | is prefixed with \"server \".\n\n\ | |
c906108c | 8327 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8328 | breakpoint set.")); |
c906108c SS |
8329 | } |
8330 | ||
1bedd215 AC |
8331 | add_info ("breakpoints", breakpoints_info, _("\ |
8332 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8333 | The \"Type\" column indicates one of:\n\ |
8334 | \tbreakpoint - normal breakpoint\n\ | |
8335 | \twatchpoint - watchpoint\n\ | |
8336 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8337 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8338 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8339 | address and file/line number respectively.\n\ |
8340 | \n\ | |
8341 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8342 | are set to the address of the last breakpoint listed unless the command\n\ |
8343 | is prefixed with \"server \".\n\n\ | |
c906108c | 8344 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8345 | breakpoint set.")); |
c906108c SS |
8346 | |
8347 | if (xdb_commands) | |
1bedd215 AC |
8348 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8349 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8350 | The \"Type\" column indicates one of:\n\ |
8351 | \tbreakpoint - normal breakpoint\n\ | |
8352 | \twatchpoint - watchpoint\n\ | |
8353 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8354 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8355 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8356 | address and file/line number respectively.\n\ |
8357 | \n\ | |
8358 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8359 | are set to the address of the last breakpoint listed unless the command\n\ |
8360 | is prefixed with \"server \".\n\n\ | |
c906108c | 8361 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8362 | breakpoint set.")); |
c906108c | 8363 | |
1a966eab AC |
8364 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8365 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8366 | The \"Type\" column indicates one of:\n\ |
8367 | \tbreakpoint - normal breakpoint\n\ | |
8368 | \twatchpoint - watchpoint\n\ | |
8369 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8370 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8371 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8372 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8373 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8374 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8375 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8376 | address and file/line number respectively.\n\ |
8377 | \n\ | |
8378 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8379 | are set to the address of the last breakpoint listed unless the command\n\ |
8380 | is prefixed with \"server \".\n\n\ | |
c906108c | 8381 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8382 | breakpoint set."), |
c906108c SS |
8383 | &maintenanceinfolist); |
8384 | ||
1bedd215 AC |
8385 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8386 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8387 | Raised signals may be caught:\n\ |
8388 | \tcatch signal - all signals\n\ | |
8389 | \tcatch signal <signame> - a particular signal\n\ | |
8390 | Raised exceptions may be caught:\n\ | |
8391 | \tcatch throw - all exceptions, when thrown\n\ | |
8392 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8393 | \tcatch catch - all exceptions, when caught\n\ | |
8394 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8395 | Thread or process events may be caught:\n\ | |
8396 | \tcatch thread_start - any threads, just after creation\n\ | |
8397 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8398 | \tcatch thread_join - any threads, just after joins\n\ | |
8399 | Process events may be caught:\n\ | |
8400 | \tcatch start - any processes, just after creation\n\ | |
8401 | \tcatch exit - any processes, just before expiration\n\ | |
8402 | \tcatch fork - calls to fork()\n\ | |
8403 | \tcatch vfork - calls to vfork()\n\ | |
8404 | \tcatch exec - calls to exec()\n\ | |
8405 | Dynamically-linked library events may be caught:\n\ | |
8406 | \tcatch load - loads of any library\n\ | |
8407 | \tcatch load <libname> - loads of a particular library\n\ | |
8408 | \tcatch unload - unloads of any library\n\ | |
8409 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8410 | The act of your program's execution stopping may also be caught:\n\ | |
8411 | \tcatch stop\n\n\ | |
8412 | C++ exceptions may be caught:\n\ | |
8413 | \tcatch throw - all exceptions, when thrown\n\ | |
8414 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8415 | Ada exceptions may be caught:\n\ |
8416 | \tcatch exception - all exceptions, when raised\n\ | |
8417 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8418 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8419 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8420 | \n\ |
8421 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8422 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8423 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8424 | |
1bedd215 AC |
8425 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8426 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8427 | Args like \"catch\" command.\n\ |
8428 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8429 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8430 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8431 | |
1bedd215 AC |
8432 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8433 | Set a watchpoint for an expression.\n\ | |
c906108c | 8434 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8435 | an expression changes.")); |
5ba2abeb | 8436 | set_cmd_completer (c, location_completer); |
c906108c | 8437 | |
1bedd215 AC |
8438 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8439 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8440 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8441 | an expression is read.")); |
5ba2abeb | 8442 | set_cmd_completer (c, location_completer); |
c906108c | 8443 | |
1bedd215 AC |
8444 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8445 | Set a watchpoint for an expression.\n\ | |
c906108c | 8446 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8447 | an expression is either read or written.")); |
5ba2abeb | 8448 | set_cmd_completer (c, location_completer); |
c906108c SS |
8449 | |
8450 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8451 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8452 | |
8453 | ||
920d2a44 AC |
8454 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8455 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8456 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8457 | &can_use_hw_watchpoints, _("\ | |
8458 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8459 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8460 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8461 | such is available. (However, any hardware watchpoints that were\n\ | |
8462 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8463 | hardware.)"), |
8464 | NULL, | |
920d2a44 | 8465 | show_can_use_hw_watchpoints, |
85c07804 | 8466 | &setlist, &showlist); |
c906108c SS |
8467 | |
8468 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8469 | |
1bedd215 | 8470 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8471 | Breakpoint specific settings\n\ |
8472 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8473 | pending breakpoint behavior"), |
fa8d40ab JJ |
8474 | &breakpoint_set_cmdlist, "set breakpoint ", |
8475 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8476 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8477 | Breakpoint specific settings\n\ |
8478 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8479 | pending breakpoint behavior"), |
fa8d40ab JJ |
8480 | &breakpoint_show_cmdlist, "show breakpoint ", |
8481 | 0/*allow-unknown*/, &showlist); | |
8482 | ||
7915a72c AC |
8483 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8484 | &pending_break_support, _("\ | |
8485 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8486 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8487 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8488 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8489 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8490 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8491 | NULL, |
920d2a44 | 8492 | show_pending_break_support, |
6e1d7d6c AC |
8493 | &breakpoint_set_cmdlist, |
8494 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8495 | |
8496 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8497 | |
8498 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8499 | &automatic_hardware_breakpoints, _("\ | |
8500 | Set automatic usage of hardware breakpoints."), _("\ | |
8501 | Show automatic usage of hardware breakpoints."), _("\ | |
8502 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8503 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8504 | a warning will be emitted for such breakpoints."), | |
8505 | NULL, | |
8506 | show_automatic_hardware_breakpoints, | |
8507 | &breakpoint_set_cmdlist, | |
8508 | &breakpoint_show_cmdlist); | |
74960c60 VP |
8509 | |
8510 | add_setshow_boolean_cmd ("always-inserted", class_support, | |
8511 | &always_inserted_mode, _("\ | |
8512 | Set mode for inserting breakpoints."), _("\ | |
8513 | Show mode for inserting breakpoints."), _("\ | |
8514 | When this mode is off (which is the default), breakpoints are inserted in\n\ | |
8515 | inferior when it is resumed, and removed when execution stops. When this\n\ | |
8516 | mode is on, breakpoints are inserted immediately and removed only when\n\ | |
8517 | the user deletes the breakpoint."), | |
8518 | NULL, | |
8519 | &show_always_inserted_mode, | |
8520 | &breakpoint_set_cmdlist, | |
8521 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8522 | |
8523 | automatic_hardware_breakpoints = 1; | |
c906108c | 8524 | } |