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 | |
c906108c SS |
63 | /* Prototypes for local functions. */ |
64 | ||
f107f563 VP |
65 | static void until_break_command_continuation (struct continuation_arg *arg, |
66 | int error); | |
c2c6d25f | 67 | |
a14ed312 | 68 | static void catch_command_1 (char *, int, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_delete_command (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_once_command (char *, int); |
c906108c | 75 | |
a14ed312 | 76 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 77 | |
a14ed312 | 78 | static void disable_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void enable_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 83 | |
a14ed312 | 84 | static void ignore_command (char *, int); |
c906108c | 85 | |
4efb68b1 | 86 | static int breakpoint_re_set_one (void *); |
c906108c | 87 | |
a14ed312 | 88 | static void clear_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void catch_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void watch_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 95 | |
98deb0da | 96 | static void break_command_1 (char *, int, int); |
c906108c | 97 | |
a14ed312 | 98 | static void mention (struct breakpoint *); |
c906108c | 99 | |
4d28f7a8 | 100 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 101 | |
9f60f21b | 102 | static void check_duplicates (struct breakpoint *); |
c906108c | 103 | |
76897487 KB |
104 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
105 | ||
88f7da05 KB |
106 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
107 | enum bptype bptype); | |
76897487 | 108 | |
d674a25c | 109 | static void describe_other_breakpoints (CORE_ADDR, asection *, int); |
c906108c | 110 | |
a14ed312 | 111 | static void breakpoints_info (char *, int); |
c906108c | 112 | |
a14ed312 | 113 | static void breakpoint_1 (int, int); |
c906108c | 114 | |
89f9893c | 115 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 116 | |
4efb68b1 | 117 | static int breakpoint_cond_eval (void *); |
c906108c | 118 | |
4efb68b1 | 119 | static void cleanup_executing_breakpoints (void *); |
c906108c | 120 | |
a14ed312 | 121 | static void commands_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void condition_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static int get_number_trailer (char **, int); |
c906108c | 126 | |
a14ed312 | 127 | void set_breakpoint_count (int); |
c906108c | 128 | |
c5aa993b JM |
129 | typedef enum |
130 | { | |
131 | mark_inserted, | |
132 | mark_uninserted | |
133 | } | |
134 | insertion_state_t; | |
c906108c | 135 | |
0bde7532 | 136 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 137 | |
a14ed312 | 138 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
139 | |
140 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 141 | |
4efb68b1 | 142 | static int watchpoint_check (void *); |
c906108c | 143 | |
a14ed312 | 144 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 145 | |
1900040c MS |
146 | static void create_overlay_event_breakpoint (char *); |
147 | ||
a14ed312 | 148 | static int hw_breakpoint_used_count (void); |
c906108c | 149 | |
a14ed312 | 150 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 151 | |
a14ed312 | 152 | static void hbreak_command (char *, int); |
c906108c | 153 | |
a14ed312 | 154 | static void thbreak_command (char *, int); |
c906108c | 155 | |
a14ed312 | 156 | static void watch_command_1 (char *, int, int); |
c906108c | 157 | |
a14ed312 | 158 | static void rwatch_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void awatch_command (char *, int); |
c906108c | 161 | |
a14ed312 | 162 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 163 | |
a14ed312 KB |
164 | static void create_fork_vfork_event_catchpoint (int tempflag, |
165 | char *cond_string, | |
166 | enum bptype bp_kind); | |
7a292a7a | 167 | |
a14ed312 | 168 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 169 | |
a14ed312 | 170 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 171 | |
a14ed312 | 172 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 173 | |
a14ed312 | 174 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 175 | |
a14ed312 | 176 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 177 | |
a14ed312 | 178 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 179 | |
d85310f7 MS |
180 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
181 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 182 | |
a14ed312 | 183 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 186 | |
1aafd4da UW |
187 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
188 | ||
fe3f5fa8 VP |
189 | static void free_bp_location (struct bp_location *loc); |
190 | ||
a5606eee VP |
191 | static struct bp_location * |
192 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
193 | ||
b60e7edf | 194 | static void update_global_location_list (int); |
a5606eee | 195 | |
b60e7edf | 196 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
197 | |
198 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
199 | ||
200 | static void insert_breakpoint_locations (void); | |
a5606eee | 201 | |
2cec12e5 AR |
202 | static const char * |
203 | bpdisp_text (enum bpdisp disp) | |
204 | { | |
205 | /* NOTE: the following values are a part of MI protocol and represent | |
206 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
207 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
208 | return bpdisps[(int) disp]; | |
209 | } | |
c906108c | 210 | |
2cec12e5 | 211 | /* Prototypes for exported functions. */ |
c906108c SS |
212 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
213 | if such is available. */ | |
214 | static int can_use_hw_watchpoints; | |
215 | ||
920d2a44 AC |
216 | static void |
217 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
218 | struct cmd_list_element *c, | |
219 | const char *value) | |
220 | { | |
221 | fprintf_filtered (file, _("\ | |
222 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
223 | value); | |
224 | } | |
225 | ||
fa8d40ab JJ |
226 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
227 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
228 | for unrecognized breakpoint locations. | |
229 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
230 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
231 | static void |
232 | show_pending_break_support (struct ui_file *file, int from_tty, | |
233 | struct cmd_list_element *c, | |
234 | const char *value) | |
235 | { | |
236 | fprintf_filtered (file, _("\ | |
237 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
238 | value); | |
239 | } | |
fa8d40ab | 240 | |
765dc015 VP |
241 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
242 | set with "break" but falling in read-only memory. | |
243 | If 0, gdb will warn about such breakpoints, but won't automatically | |
244 | use hardware breakpoints. */ | |
245 | static int automatic_hardware_breakpoints; | |
246 | static void | |
247 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
248 | struct cmd_list_element *c, | |
249 | const char *value) | |
250 | { | |
251 | fprintf_filtered (file, _("\ | |
252 | Automatic usage of hardware breakpoints is %s.\n"), | |
253 | value); | |
254 | } | |
255 | ||
74960c60 VP |
256 | /* If 1, gdb will keep breakpoints inserted even as inferior is stopped, |
257 | and immediately insert any new breakpoints. If 0, gdb will insert | |
258 | breakpoints into inferior only when resuming it, and will remove | |
259 | breakpoints upon stop. */ | |
260 | static int always_inserted_mode = 0; | |
261 | static void | |
262 | show_always_inserted_mode (struct ui_file *file, int from_tty, | |
263 | struct cmd_list_element *c, const char *value) | |
264 | { | |
265 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
266 | } | |
267 | ||
765dc015 | 268 | |
a14ed312 | 269 | void _initialize_breakpoint (void); |
c906108c | 270 | |
c5aa993b | 271 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 272 | |
c906108c SS |
273 | /* Are we executing breakpoint commands? */ |
274 | static int executing_breakpoint_commands; | |
275 | ||
c02f5703 MS |
276 | /* Are overlay event breakpoints enabled? */ |
277 | static int overlay_events_enabled; | |
278 | ||
c906108c SS |
279 | /* Walk the following statement or block through all breakpoints. |
280 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
281 | breakpoint. */ | |
282 | ||
5c44784c | 283 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 284 | |
5c44784c JM |
285 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
286 | for (B = breakpoint_chain; \ | |
287 | B ? (TMP=B->next, 1): 0; \ | |
288 | B = TMP) | |
c906108c | 289 | |
7cc221ef DJ |
290 | /* Similar iterators for the low-level breakpoints. */ |
291 | ||
0d381245 | 292 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
293 | |
294 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
295 | for (B = bp_location_chain; \ | |
0d381245 | 296 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
297 | B = TMP) |
298 | ||
c906108c SS |
299 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
300 | ||
301 | int show_breakpoint_hit_counts = 1; | |
302 | ||
7cc221ef | 303 | /* Chains of all breakpoints defined. */ |
c906108c SS |
304 | |
305 | struct breakpoint *breakpoint_chain; | |
306 | ||
7cc221ef DJ |
307 | struct bp_location *bp_location_chain; |
308 | ||
20874c92 VP |
309 | /* The locations that no longer correspond to any breakpoint, |
310 | unlinked from bp_location_chain, but for which a hit | |
311 | may still be reported by a target. */ | |
312 | VEC(bp_location_p) *moribund_locations = NULL; | |
313 | ||
c906108c SS |
314 | /* Number of last breakpoint made. */ |
315 | ||
316 | int breakpoint_count; | |
317 | ||
c906108c SS |
318 | /* This function returns a pointer to the string representation of the |
319 | pathname of the dynamically-linked library that has just been | |
320 | loaded. | |
321 | ||
322 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
323 | or undefined results are guaranteed. | |
324 | ||
325 | This string's contents are only valid immediately after the | |
326 | inferior has stopped in the dynamic linker hook, and becomes | |
327 | invalid as soon as the inferior is continued. Clients should make | |
328 | a copy of this string if they wish to continue the inferior and | |
329 | then access the string. */ | |
330 | ||
331 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
332 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
333 | #endif | |
334 | ||
335 | /* This function returns a pointer to the string representation of the | |
336 | pathname of the dynamically-linked library that has just been | |
337 | unloaded. | |
338 | ||
339 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
340 | TRUE, or undefined results are guaranteed. | |
341 | ||
342 | This string's contents are only valid immediately after the | |
343 | inferior has stopped in the dynamic linker hook, and becomes | |
344 | invalid as soon as the inferior is continued. Clients should make | |
345 | a copy of this string if they wish to continue the inferior and | |
346 | then access the string. */ | |
347 | ||
348 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
349 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
350 | #endif | |
351 | ||
352 | /* This function is called by the "catch load" command. It allows the | |
353 | debugger to be notified by the dynamic linker when a specified | |
354 | library file (or any library file, if filename is NULL) is loaded. */ | |
355 | ||
356 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
357 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 358 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
359 | #endif |
360 | ||
361 | /* This function is called by the "catch unload" command. It allows | |
362 | the debugger to be notified by the dynamic linker when a specified | |
363 | library file (or any library file, if filename is NULL) is | |
364 | unloaded. */ | |
365 | ||
366 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 367 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 368 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
369 | #endif |
370 | ||
468d015d JJ |
371 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
372 | static int | |
373 | breakpoint_enabled (struct breakpoint *b) | |
374 | { | |
0d381245 | 375 | return (b->enable_state == bp_enabled); |
468d015d JJ |
376 | } |
377 | ||
c906108c SS |
378 | /* Set breakpoint count to NUM. */ |
379 | ||
380 | void | |
fba45db2 | 381 | set_breakpoint_count (int num) |
c906108c SS |
382 | { |
383 | breakpoint_count = num; | |
384 | set_internalvar (lookup_internalvar ("bpnum"), | |
385 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
386 | } | |
387 | ||
388 | /* Used in run_command to zero the hit count when a new run starts. */ | |
389 | ||
390 | void | |
fba45db2 | 391 | clear_breakpoint_hit_counts (void) |
c906108c SS |
392 | { |
393 | struct breakpoint *b; | |
394 | ||
395 | ALL_BREAKPOINTS (b) | |
396 | b->hit_count = 0; | |
397 | } | |
398 | ||
399 | /* Default address, symtab and line to put a breakpoint at | |
400 | for "break" command with no arg. | |
401 | if default_breakpoint_valid is zero, the other three are | |
402 | not valid, and "break" with no arg is an error. | |
403 | ||
404 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
405 | ||
406 | int default_breakpoint_valid; | |
407 | CORE_ADDR default_breakpoint_address; | |
408 | struct symtab *default_breakpoint_symtab; | |
409 | int default_breakpoint_line; | |
410 | \f | |
411 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
412 | Advance *PP after the string and any trailing whitespace. | |
413 | ||
414 | Currently the string can either be a number or "$" followed by the name | |
415 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 416 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
417 | |
418 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
419 | |
420 | TRAILER is a character which can be found after the number; most | |
421 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 422 | static int |
fba45db2 | 423 | get_number_trailer (char **pp, int trailer) |
c906108c | 424 | { |
5c44784c | 425 | int retval = 0; /* default */ |
c906108c SS |
426 | char *p = *pp; |
427 | ||
428 | if (p == NULL) | |
429 | /* Empty line means refer to the last breakpoint. */ | |
430 | return breakpoint_count; | |
431 | else if (*p == '$') | |
432 | { | |
433 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 434 | to pass to lookup_internalvar(). */ |
c906108c SS |
435 | char *varname; |
436 | char *start = ++p; | |
278cd55f | 437 | struct value *val; |
c906108c SS |
438 | |
439 | while (isalnum (*p) || *p == '_') | |
440 | p++; | |
441 | varname = (char *) alloca (p - start + 1); | |
442 | strncpy (varname, start, p - start); | |
443 | varname[p - start] = '\0'; | |
444 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 445 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
446 | retval = (int) value_as_long (val); |
447 | else | |
448 | { | |
a3f17187 | 449 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
450 | retval = 0; |
451 | } | |
c906108c SS |
452 | } |
453 | else | |
454 | { | |
455 | if (*p == '-') | |
456 | ++p; | |
457 | while (*p >= '0' && *p <= '9') | |
458 | ++p; | |
459 | if (p == *pp) | |
460 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
461 | { |
462 | /* Skip non-numeric token */ | |
463 | while (*p && !isspace((int) *p)) | |
464 | ++p; | |
465 | /* Return zero, which caller must interpret as error. */ | |
466 | retval = 0; | |
467 | } | |
468 | else | |
469 | retval = atoi (*pp); | |
470 | } | |
471 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
472 | { | |
473 | /* Trailing junk: return 0 and let caller print error msg. */ | |
474 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
475 | ++p; | |
476 | retval = 0; | |
c906108c | 477 | } |
c906108c SS |
478 | while (isspace (*p)) |
479 | p++; | |
480 | *pp = p; | |
481 | return retval; | |
482 | } | |
5c44784c | 483 | |
11cf8741 | 484 | |
5c44784c JM |
485 | /* Like get_number_trailer, but don't allow a trailer. */ |
486 | int | |
fba45db2 | 487 | get_number (char **pp) |
5c44784c JM |
488 | { |
489 | return get_number_trailer (pp, '\0'); | |
490 | } | |
491 | ||
492 | /* Parse a number or a range. | |
493 | * A number will be of the form handled by get_number. | |
494 | * A range will be of the form <number1> - <number2>, and | |
495 | * will represent all the integers between number1 and number2, | |
496 | * inclusive. | |
497 | * | |
498 | * While processing a range, this fuction is called iteratively; | |
499 | * At each call it will return the next value in the range. | |
500 | * | |
501 | * At the beginning of parsing a range, the char pointer PP will | |
502 | * be advanced past <number1> and left pointing at the '-' token. | |
503 | * Subsequent calls will not advance the pointer until the range | |
504 | * is completed. The call that completes the range will advance | |
505 | * pointer PP past <number2>. | |
506 | */ | |
507 | ||
508 | int | |
fba45db2 | 509 | get_number_or_range (char **pp) |
5c44784c JM |
510 | { |
511 | static int last_retval, end_value; | |
512 | static char *end_ptr; | |
513 | static int in_range = 0; | |
514 | ||
515 | if (**pp != '-') | |
516 | { | |
517 | /* Default case: pp is pointing either to a solo number, | |
518 | or to the first number of a range. */ | |
519 | last_retval = get_number_trailer (pp, '-'); | |
520 | if (**pp == '-') | |
521 | { | |
522 | char **temp; | |
523 | ||
524 | /* This is the start of a range (<number1> - <number2>). | |
525 | Skip the '-', parse and remember the second number, | |
526 | and also remember the end of the final token. */ | |
527 | ||
528 | temp = &end_ptr; | |
529 | end_ptr = *pp + 1; | |
530 | while (isspace ((int) *end_ptr)) | |
531 | end_ptr++; /* skip white space */ | |
532 | end_value = get_number (temp); | |
533 | if (end_value < last_retval) | |
534 | { | |
8a3fe4f8 | 535 | error (_("inverted range")); |
5c44784c JM |
536 | } |
537 | else if (end_value == last_retval) | |
538 | { | |
539 | /* degenerate range (number1 == number2). Advance the | |
540 | token pointer so that the range will be treated as a | |
541 | single number. */ | |
542 | *pp = end_ptr; | |
543 | } | |
544 | else | |
545 | in_range = 1; | |
546 | } | |
547 | } | |
548 | else if (! in_range) | |
8a3fe4f8 | 549 | error (_("negative value")); |
5c44784c JM |
550 | else |
551 | { | |
552 | /* pp points to the '-' that betokens a range. All | |
553 | number-parsing has already been done. Return the next | |
554 | integer value (one greater than the saved previous value). | |
555 | Do not advance the token pointer 'pp' until the end of range | |
556 | is reached. */ | |
557 | ||
558 | if (++last_retval == end_value) | |
559 | { | |
560 | /* End of range reached; advance token pointer. */ | |
561 | *pp = end_ptr; | |
562 | in_range = 0; | |
563 | } | |
564 | } | |
565 | return last_retval; | |
566 | } | |
567 | ||
568 | ||
c906108c SS |
569 | \f |
570 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
571 | ||
572 | static void | |
fba45db2 | 573 | condition_command (char *arg, int from_tty) |
c906108c | 574 | { |
52f0bd74 | 575 | struct breakpoint *b; |
c906108c | 576 | char *p; |
52f0bd74 | 577 | int bnum; |
c906108c SS |
578 | |
579 | if (arg == 0) | |
e2e0b3e5 | 580 | error_no_arg (_("breakpoint number")); |
c906108c SS |
581 | |
582 | p = arg; | |
583 | bnum = get_number (&p); | |
5c44784c | 584 | if (bnum == 0) |
8a3fe4f8 | 585 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
586 | |
587 | ALL_BREAKPOINTS (b) | |
588 | if (b->number == bnum) | |
2f069f6f JB |
589 | { |
590 | struct bp_location *loc = b->loc; | |
591 | for (; loc; loc = loc->next) | |
592 | { | |
593 | if (loc->cond) | |
594 | { | |
595 | xfree (loc->cond); | |
596 | loc->cond = 0; | |
597 | } | |
598 | } | |
599 | if (b->cond_string != NULL) | |
600 | xfree (b->cond_string); | |
c906108c | 601 | |
2f069f6f JB |
602 | if (*p == 0) |
603 | { | |
604 | b->cond_string = NULL; | |
605 | if (from_tty) | |
606 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
607 | } | |
608 | else | |
609 | { | |
610 | arg = p; | |
611 | /* I don't know if it matters whether this is the string the user | |
612 | typed in or the decompiled expression. */ | |
613 | b->cond_string = savestring (arg, strlen (arg)); | |
614 | b->condition_not_parsed = 0; | |
615 | for (loc = b->loc; loc; loc = loc->next) | |
616 | { | |
617 | arg = p; | |
618 | loc->cond = | |
619 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
620 | if (*arg) | |
621 | error (_("Junk at end of expression")); | |
622 | } | |
623 | } | |
624 | breakpoints_changed (); | |
625 | breakpoint_modify_event (b->number); | |
626 | return; | |
627 | } | |
c906108c | 628 | |
8a3fe4f8 | 629 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
630 | } |
631 | ||
c906108c | 632 | static void |
fba45db2 | 633 | commands_command (char *arg, int from_tty) |
c906108c | 634 | { |
52f0bd74 | 635 | struct breakpoint *b; |
c906108c | 636 | char *p; |
52f0bd74 | 637 | int bnum; |
c906108c SS |
638 | struct command_line *l; |
639 | ||
640 | /* If we allowed this, we would have problems with when to | |
641 | free the storage, if we change the commands currently | |
642 | being read from. */ | |
643 | ||
644 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 645 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
646 | |
647 | p = arg; | |
648 | bnum = get_number (&p); | |
5c44784c | 649 | |
c906108c | 650 | if (p && *p) |
8a3fe4f8 | 651 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 652 | |
c906108c SS |
653 | ALL_BREAKPOINTS (b) |
654 | if (b->number == bnum) | |
9ebf4acf AC |
655 | { |
656 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
657 | bnum); | |
658 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
659 | l = read_command_lines (tmpbuf, from_tty); | |
660 | do_cleanups (cleanups); | |
661 | free_command_lines (&b->commands); | |
662 | b->commands = l; | |
663 | breakpoints_changed (); | |
664 | breakpoint_modify_event (b->number); | |
665 | return; | |
c5aa993b | 666 | } |
8a3fe4f8 | 667 | error (_("No breakpoint number %d."), bnum); |
c906108c | 668 | } |
40c03ae8 EZ |
669 | |
670 | /* Like commands_command, but instead of reading the commands from | |
671 | input stream, takes them from an already parsed command structure. | |
672 | ||
673 | This is used by cli-script.c to DTRT with breakpoint commands | |
674 | that are part of if and while bodies. */ | |
675 | enum command_control_type | |
676 | commands_from_control_command (char *arg, struct command_line *cmd) | |
677 | { | |
678 | struct breakpoint *b; | |
679 | char *p; | |
680 | int bnum; | |
681 | ||
682 | /* If we allowed this, we would have problems with when to | |
683 | free the storage, if we change the commands currently | |
684 | being read from. */ | |
685 | ||
686 | if (executing_breakpoint_commands) | |
687 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
688 | ||
689 | /* An empty string for the breakpoint number means the last | |
690 | breakpoint, but get_number expects a NULL pointer. */ | |
691 | if (arg && !*arg) | |
692 | p = NULL; | |
693 | else | |
694 | p = arg; | |
695 | bnum = get_number (&p); | |
696 | ||
697 | if (p && *p) | |
698 | error (_("Unexpected extra arguments following breakpoint number.")); | |
699 | ||
700 | ALL_BREAKPOINTS (b) | |
701 | if (b->number == bnum) | |
702 | { | |
703 | free_command_lines (&b->commands); | |
704 | if (cmd->body_count != 1) | |
705 | error (_("Invalid \"commands\" block structure.")); | |
706 | /* We need to copy the commands because if/while will free the | |
707 | list after it finishes execution. */ | |
708 | b->commands = copy_command_lines (cmd->body_list[0]); | |
709 | breakpoints_changed (); | |
710 | breakpoint_modify_event (b->number); | |
711 | return simple_control; | |
2f069f6f | 712 | } |
40c03ae8 EZ |
713 | error (_("No breakpoint number %d."), bnum); |
714 | } | |
c906108c | 715 | \f |
8defab1a DJ |
716 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
717 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 718 | |
8defab1a DJ |
719 | void |
720 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 721 | { |
8defab1a | 722 | struct bp_location *b; |
c906108c SS |
723 | CORE_ADDR bp_addr = 0; |
724 | int bp_size = 0; | |
8defab1a | 725 | int bptoffset = 0; |
c5aa993b | 726 | |
ffce0d52 | 727 | ALL_BP_LOCATIONS (b) |
c5aa993b | 728 | { |
ffce0d52 | 729 | if (b->owner->type == bp_none) |
8a3fe4f8 | 730 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
731 | b->owner->number); |
732 | ||
733 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 734 | continue; |
ffce0d52 | 735 | if (!b->inserted) |
c5aa993b JM |
736 | continue; |
737 | /* Addresses and length of the part of the breakpoint that | |
738 | we need to copy. */ | |
8181d85f DJ |
739 | bp_addr = b->target_info.placed_address; |
740 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 741 | if (bp_size == 0) |
8181d85f | 742 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 743 | continue; |
8defab1a | 744 | |
c5aa993b JM |
745 | if (bp_addr + bp_size <= memaddr) |
746 | /* The breakpoint is entirely before the chunk of memory we | |
747 | are reading. */ | |
748 | continue; | |
8defab1a | 749 | |
c5aa993b JM |
750 | if (bp_addr >= memaddr + len) |
751 | /* The breakpoint is entirely after the chunk of memory we are | |
752 | reading. */ | |
753 | continue; | |
c5aa993b | 754 | |
8defab1a DJ |
755 | /* Offset within shadow_contents. */ |
756 | if (bp_addr < memaddr) | |
757 | { | |
758 | /* Only copy the second part of the breakpoint. */ | |
759 | bp_size -= memaddr - bp_addr; | |
760 | bptoffset = memaddr - bp_addr; | |
761 | bp_addr = memaddr; | |
762 | } | |
c5aa993b | 763 | |
8defab1a DJ |
764 | if (bp_addr + bp_size > memaddr + len) |
765 | { | |
766 | /* Only copy the first part of the breakpoint. */ | |
767 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
768 | } | |
c5aa993b | 769 | |
8defab1a DJ |
770 | memcpy (buf + bp_addr - memaddr, |
771 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 772 | } |
c906108c | 773 | } |
c906108c | 774 | \f |
c5aa993b | 775 | |
687595f9 | 776 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 777 | static void |
687595f9 DJ |
778 | insert_catchpoint (struct ui_out *uo, void *args) |
779 | { | |
780 | struct breakpoint *b = (struct breakpoint *) args; | |
781 | int val = -1; | |
782 | ||
783 | switch (b->type) | |
784 | { | |
785 | case bp_catch_fork: | |
fa113d1a | 786 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
787 | break; |
788 | case bp_catch_vfork: | |
fa113d1a | 789 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
790 | break; |
791 | case bp_catch_exec: | |
fa113d1a | 792 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
793 | break; |
794 | default: | |
e2e0b3e5 | 795 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
796 | break; |
797 | } | |
687595f9 DJ |
798 | } |
799 | ||
a5606eee VP |
800 | static int |
801 | is_hardware_watchpoint (struct breakpoint *bpt) | |
802 | { | |
803 | return (bpt->type == bp_hardware_watchpoint | |
804 | || bpt->type == bp_read_watchpoint | |
805 | || bpt->type == bp_access_watchpoint); | |
806 | } | |
7270d8f2 | 807 | |
fa4727a6 DJ |
808 | /* Find the current value of a watchpoint on EXP. Return the value in |
809 | *VALP and *RESULTP and the chain of intermediate and final values | |
810 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
811 | not need them. | |
812 | ||
813 | If an error occurs while evaluating the expression, *RESULTP will | |
814 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
815 | not be read from memory. It is used to determine whether a value | |
816 | is user-specified (we should watch the whole value) or intermediate | |
817 | (we should watch only the bit used to locate the final value). | |
818 | ||
819 | If the final value, or any intermediate value, could not be read | |
820 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
821 | set to any referenced values. *VALP will never be a lazy value. | |
822 | This is the value which we store in struct breakpoint. | |
823 | ||
824 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
825 | value chain. The caller must free the values individually. If | |
826 | VAL_CHAIN is NULL, all generated values will be left on the value | |
827 | chain. */ | |
828 | ||
829 | static void | |
830 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
831 | struct value **resultp, struct value **val_chain) | |
832 | { | |
833 | struct value *mark, *new_mark, *result; | |
834 | ||
835 | *valp = NULL; | |
836 | if (resultp) | |
837 | *resultp = NULL; | |
838 | if (val_chain) | |
839 | *val_chain = NULL; | |
840 | ||
841 | /* Evaluate the expression. */ | |
842 | mark = value_mark (); | |
843 | result = NULL; | |
844 | gdb_evaluate_expression (exp, &result); | |
845 | new_mark = value_mark (); | |
846 | if (mark == new_mark) | |
847 | return; | |
848 | if (resultp) | |
849 | *resultp = result; | |
850 | ||
851 | /* Make sure it's not lazy, so that after the target stops again we | |
852 | have a non-lazy previous value to compare with. */ | |
853 | if (result != NULL | |
854 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
855 | *valp = result; | |
856 | ||
857 | if (val_chain) | |
858 | { | |
859 | /* Return the chain of intermediate values. We use this to | |
860 | decide which addresses to watch. */ | |
861 | *val_chain = new_mark; | |
862 | value_release_to_mark (mark); | |
863 | } | |
864 | } | |
865 | ||
866 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
867 | - Reparse watchpoint expression, is REPARSE is non-zero |
868 | - Evaluate expression and store the result in B->val | |
869 | - Update the list of values that must be watched in B->loc. | |
870 | ||
871 | If the watchpoint is disabled, do nothing. If this is | |
872 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 873 | static void |
a5606eee | 874 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 875 | { |
a5606eee | 876 | int within_current_scope; |
a5606eee VP |
877 | struct frame_id saved_frame_id; |
878 | struct bp_location *loc; | |
879 | bpstat bs; | |
880 | ||
74960c60 VP |
881 | /* We don't free locations. They are stored in |
882 | bp_location_chain and update_global_locations will | |
883 | eventually delete them and remove breakpoints if | |
884 | needed. */ | |
a5606eee VP |
885 | b->loc = NULL; |
886 | ||
887 | if (b->disposition == disp_del_at_next_stop) | |
888 | return; | |
889 | ||
890 | /* Save the current frame's ID so we can restore it after | |
891 | evaluating the watchpoint expression on its own frame. */ | |
892 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
893 | took a frame parameter, so that we didn't have to change the | |
894 | selected frame. */ | |
895 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
896 | ||
897 | /* Determine if the watchpoint is within scope. */ | |
898 | if (b->exp_valid_block == NULL) | |
899 | within_current_scope = 1; | |
900 | else | |
901 | { | |
902 | struct frame_info *fi; | |
903 | fi = frame_find_by_id (b->watchpoint_frame); | |
904 | within_current_scope = (fi != NULL); | |
905 | if (within_current_scope) | |
906 | select_frame (fi); | |
907 | } | |
908 | ||
909 | if (within_current_scope && reparse) | |
910 | { | |
911 | char *s; | |
912 | if (b->exp) | |
913 | { | |
914 | xfree (b->exp); | |
915 | b->exp = NULL; | |
916 | } | |
917 | s = b->exp_string; | |
918 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
919 | /* If the meaning of expression itself changed, the old value is | |
920 | no longer relevant. We don't want to report a watchpoint hit | |
921 | to the user when the old value and the new value may actually | |
922 | be completely different objects. */ | |
923 | value_free (b->val); | |
fa4727a6 DJ |
924 | b->val = NULL; |
925 | b->val_valid = 0; | |
a5606eee | 926 | } |
a5606eee VP |
927 | |
928 | /* If we failed to parse the expression, for example because | |
929 | it refers to a global variable in a not-yet-loaded shared library, | |
930 | don't try to insert watchpoint. We don't automatically delete | |
931 | such watchpoint, though, since failure to parse expression | |
932 | is different from out-of-scope watchpoint. */ | |
933 | if (within_current_scope && b->exp) | |
934 | { | |
fa4727a6 | 935 | struct value *val_chain, *v, *result, *next; |
a5606eee | 936 | |
fa4727a6 | 937 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 938 | |
a5606eee VP |
939 | /* Avoid setting b->val if it's already set. The meaning of |
940 | b->val is 'the last value' user saw, and we should update | |
941 | it only if we reported that last value to user. As it | |
942 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
943 | if (!b->val_valid) |
944 | { | |
945 | b->val = v; | |
946 | b->val_valid = 1; | |
947 | } | |
a5606eee VP |
948 | |
949 | /* Look at each value on the value chain. */ | |
fa4727a6 | 950 | for (v = val_chain; v; v = next) |
a5606eee VP |
951 | { |
952 | /* If it's a memory location, and GDB actually needed | |
953 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
954 | must watch it. If the first value returned is |
955 | still lazy, that means an error occurred reading it; | |
956 | watch it anyway in case it becomes readable. */ | |
a5606eee | 957 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 958 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
959 | { |
960 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 961 | |
a5606eee VP |
962 | /* We only watch structs and arrays if user asked |
963 | for it explicitly, never if they just happen to | |
964 | appear in the middle of some value chain. */ | |
fa4727a6 | 965 | if (v == result |
a5606eee VP |
966 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
967 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
968 | { | |
969 | CORE_ADDR addr; | |
970 | int len, type; | |
971 | struct bp_location *loc, **tmp; | |
972 | ||
973 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
974 | len = TYPE_LENGTH (value_type (v)); | |
975 | type = hw_write; | |
976 | if (b->type == bp_read_watchpoint) | |
977 | type = hw_read; | |
978 | else if (b->type == bp_access_watchpoint) | |
979 | type = hw_access; | |
980 | ||
981 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
982 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
983 | ; | |
984 | *tmp = loc; | |
985 | loc->address = addr; | |
986 | loc->length = len; | |
987 | loc->watchpoint_type = type; | |
988 | } | |
989 | } | |
990 | ||
991 | next = value_next (v); | |
992 | if (v != b->val) | |
993 | value_free (v); | |
994 | } | |
995 | ||
2ec93238 MK |
996 | /* We just regenerated the list of breakpoint locations. |
997 | The new location does not have its condition field set to anything | |
998 | and therefore, we must always reparse the cond_string, independently | |
999 | of the value of the reparse flag. */ | |
1000 | if (b->cond_string != NULL) | |
a5606eee VP |
1001 | { |
1002 | char *s = b->cond_string; | |
a5606eee VP |
1003 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1004 | } | |
1005 | } | |
1006 | else if (!within_current_scope) | |
7270d8f2 | 1007 | { |
a5606eee VP |
1008 | printf_filtered (_("\ |
1009 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1010 | in which its expression is valid.\n"), | |
1011 | b->number); | |
1012 | if (b->related_breakpoint) | |
1013 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1014 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1015 | } |
a5606eee VP |
1016 | |
1017 | /* Restore the selected frame. */ | |
1018 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1019 | } |
1020 | ||
a5606eee | 1021 | |
74960c60 VP |
1022 | /* Returns 1 iff breakpoint location should be |
1023 | inserted in the inferior. */ | |
1024 | static int | |
1025 | should_be_inserted (struct bp_location *bpt) | |
1026 | { | |
1027 | if (!breakpoint_enabled (bpt->owner)) | |
1028 | return 0; | |
1029 | ||
1030 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1031 | return 0; | |
1032 | ||
1033 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1034 | return 0; | |
1035 | ||
1036 | return 1; | |
1037 | } | |
1038 | ||
879bfdc2 DJ |
1039 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1040 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1041 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1042 | ||
1043 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1044 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1045 | static int |
879bfdc2 | 1046 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1047 | struct ui_file *tmp_error_stream, |
1048 | int *disabled_breaks, int *process_warning, | |
1049 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1050 | { |
1051 | int val = 0; | |
1052 | ||
74960c60 | 1053 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1054 | return 0; |
1055 | ||
8181d85f DJ |
1056 | /* Initialize the target-specific information. */ |
1057 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1058 | bpt->target_info.placed_address = bpt->address; | |
1059 | ||
879bfdc2 DJ |
1060 | if (bpt->loc_type == bp_loc_software_breakpoint |
1061 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1062 | { | |
765dc015 VP |
1063 | if (bpt->owner->type != bp_hardware_breakpoint) |
1064 | { | |
1065 | /* If the explicitly specified breakpoint type | |
1066 | is not hardware breakpoint, check the memory map to see | |
1067 | if the breakpoint address is in read only memory or not. | |
1068 | Two important cases are: | |
1069 | - location type is not hardware breakpoint, memory | |
1070 | is readonly. We change the type of the location to | |
1071 | hardware breakpoint. | |
1072 | - location type is hardware breakpoint, memory is read-write. | |
1073 | This means we've previously made the location hardware one, but | |
1074 | then the memory map changed, so we undo. | |
1075 | ||
1076 | When breakpoints are removed, remove_breakpoints will | |
1077 | use location types we've just set here, the only possible | |
1078 | problem is that memory map has changed during running program, | |
1079 | but it's not going to work anyway with current gdb. */ | |
1080 | struct mem_region *mr | |
1081 | = lookup_mem_region (bpt->target_info.placed_address); | |
1082 | ||
1083 | if (mr) | |
1084 | { | |
1085 | if (automatic_hardware_breakpoints) | |
1086 | { | |
1087 | int changed = 0; | |
1088 | enum bp_loc_type new_type; | |
1089 | ||
1090 | if (mr->attrib.mode != MEM_RW) | |
1091 | new_type = bp_loc_hardware_breakpoint; | |
1092 | else | |
1093 | new_type = bp_loc_software_breakpoint; | |
1094 | ||
1095 | if (new_type != bpt->loc_type) | |
1096 | { | |
1097 | static int said = 0; | |
1098 | bpt->loc_type = new_type; | |
1099 | if (!said) | |
1100 | { | |
1101 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1102 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1103 | said = 1; |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1108 | && mr->attrib.mode != MEM_RW) | |
1109 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1110 | paddr (bpt->address)); | |
1111 | } | |
1112 | } | |
1113 | ||
879bfdc2 DJ |
1114 | /* First check to see if we have to handle an overlay. */ |
1115 | if (overlay_debugging == ovly_off | |
1116 | || bpt->section == NULL | |
1117 | || !(section_is_overlay (bpt->section))) | |
1118 | { | |
1119 | /* No overlay handling: just set the breakpoint. */ | |
1120 | ||
1121 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1122 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1123 | else |
8181d85f | 1124 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1125 | } |
1126 | else | |
1127 | { | |
1128 | /* This breakpoint is in an overlay section. | |
1129 | Shall we set a breakpoint at the LMA? */ | |
1130 | if (!overlay_events_enabled) | |
1131 | { | |
1132 | /* Yes -- overlay event support is not active, | |
1133 | so we must try to set a breakpoint at the LMA. | |
1134 | This will not work for a hardware breakpoint. */ | |
1135 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1136 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1137 | bpt->owner->number); |
1138 | else | |
1139 | { | |
1140 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1141 | bpt->section); | |
1142 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1143 | bpt->overlay_target_info = bpt->target_info; |
1144 | bpt->overlay_target_info.placed_address = addr; | |
1145 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1146 | if (val != 0) |
1147 | fprintf_unfiltered (tmp_error_stream, | |
1148 | "Overlay breakpoint %d failed: in ROM?", | |
1149 | bpt->owner->number); | |
1150 | } | |
1151 | } | |
1152 | /* Shall we set a breakpoint at the VMA? */ | |
1153 | if (section_is_mapped (bpt->section)) | |
1154 | { | |
1155 | /* Yes. This overlay section is mapped into memory. */ | |
1156 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1157 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1158 | else |
8181d85f | 1159 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1160 | } |
1161 | else | |
1162 | { | |
1163 | /* No. This breakpoint will not be inserted. | |
1164 | No error, but do not mark the bp as 'inserted'. */ | |
1165 | return 0; | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | if (val) | |
1170 | { | |
1171 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1172 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1173 | { |
1174 | /* See also: disable_breakpoints_in_shlibs. */ | |
1175 | val = 0; | |
0d381245 | 1176 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1177 | if (!*disabled_breaks) |
1178 | { | |
1179 | fprintf_unfiltered (tmp_error_stream, | |
1180 | "Cannot insert breakpoint %d.\n", | |
1181 | bpt->owner->number); | |
1182 | fprintf_unfiltered (tmp_error_stream, | |
1183 | "Temporarily disabling shared library breakpoints:\n"); | |
1184 | } | |
1185 | *disabled_breaks = 1; | |
1186 | fprintf_unfiltered (tmp_error_stream, | |
1187 | "breakpoint #%d\n", bpt->owner->number); | |
1188 | } | |
1189 | else | |
879bfdc2 DJ |
1190 | { |
1191 | #ifdef ONE_PROCESS_WRITETEXT | |
1192 | *process_warning = 1; | |
1193 | #endif | |
1194 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1195 | { | |
1196 | *hw_breakpoint_error = 1; | |
1197 | fprintf_unfiltered (tmp_error_stream, | |
1198 | "Cannot insert hardware breakpoint %d.\n", | |
1199 | bpt->owner->number); | |
1200 | } | |
1201 | else | |
1202 | { | |
1203 | fprintf_unfiltered (tmp_error_stream, | |
1204 | "Cannot insert breakpoint %d.\n", | |
1205 | bpt->owner->number); | |
1206 | fprintf_filtered (tmp_error_stream, | |
1207 | "Error accessing memory address "); | |
ed49a04f | 1208 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1209 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1210 | safe_strerror (val)); | |
1211 | } | |
1212 | ||
1213 | } | |
1214 | } | |
1215 | else | |
1216 | bpt->inserted = 1; | |
1217 | ||
1218 | return val; | |
1219 | } | |
1220 | ||
1221 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1222 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1223 | watchpoints. It's not clear that it's necessary... */ | |
1224 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1225 | { | |
a5606eee VP |
1226 | val = target_insert_watchpoint (bpt->address, |
1227 | bpt->length, | |
1228 | bpt->watchpoint_type); | |
1229 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1230 | } |
1231 | ||
879bfdc2 DJ |
1232 | else if (bpt->owner->type == bp_catch_fork |
1233 | || bpt->owner->type == bp_catch_vfork | |
1234 | || bpt->owner->type == bp_catch_exec) | |
1235 | { | |
71fff37b AC |
1236 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1237 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1238 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1239 | bpt->owner->number); | |
1240 | if (e.reason < 0) | |
879bfdc2 DJ |
1241 | bpt->owner->enable_state = bp_disabled; |
1242 | else | |
1243 | bpt->inserted = 1; | |
1640b821 DJ |
1244 | |
1245 | /* We've already printed an error message if there was a problem | |
1246 | inserting this catchpoint, and we've disabled the catchpoint, | |
1247 | so just return success. */ | |
1248 | return 0; | |
879bfdc2 DJ |
1249 | } |
1250 | ||
1251 | return 0; | |
1252 | } | |
1253 | ||
74960c60 VP |
1254 | /* Make sure all breakpoints are inserted in inferior. |
1255 | Throws exception on any error. | |
1256 | A breakpoint that is already inserted won't be inserted | |
1257 | again, so calling this function twice is safe. */ | |
1258 | void | |
1259 | insert_breakpoints (void) | |
1260 | { | |
1261 | struct breakpoint *bpt; | |
1262 | ||
1263 | ALL_BREAKPOINTS (bpt) | |
1264 | if (is_hardware_watchpoint (bpt)) | |
1265 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1266 | ||
b60e7edf | 1267 | update_global_location_list (1); |
74960c60 VP |
1268 | |
1269 | if (!always_inserted_mode && target_has_execution) | |
1270 | /* update_global_location_list does not insert breakpoints | |
1271 | when always_inserted_mode is not enabled. Explicitly | |
1272 | insert them now. */ | |
1273 | insert_breakpoint_locations (); | |
1274 | } | |
1275 | ||
c906108c SS |
1276 | /* insert_breakpoints is used when starting or continuing the program. |
1277 | remove_breakpoints is used when the program stops. | |
1278 | Both return zero if successful, | |
1279 | or an `errno' value if could not write the inferior. */ | |
1280 | ||
74960c60 VP |
1281 | static void |
1282 | insert_breakpoint_locations (void) | |
c906108c | 1283 | { |
a5606eee | 1284 | struct breakpoint *bpt; |
879bfdc2 | 1285 | struct bp_location *b, *temp; |
e236ba44 | 1286 | int error = 0; |
c906108c SS |
1287 | int val = 0; |
1288 | int disabled_breaks = 0; | |
81d0cc19 GS |
1289 | int hw_breakpoint_error = 0; |
1290 | int process_warning = 0; | |
c906108c | 1291 | |
81d0cc19 GS |
1292 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1293 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1294 | |
81d0cc19 GS |
1295 | /* Explicitly mark the warning -- this will only be printed if |
1296 | there was an error. */ | |
1297 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1298 | |
879bfdc2 DJ |
1299 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1300 | { | |
74960c60 | 1301 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1302 | continue; |
1303 | ||
f365de73 AS |
1304 | /* There is no point inserting thread-specific breakpoints if the |
1305 | thread no longer exists. */ | |
1306 | if (b->owner->thread != -1 | |
1307 | && !valid_thread_id (b->owner->thread)) | |
1308 | continue; | |
1309 | ||
879bfdc2 DJ |
1310 | val = insert_bp_location (b, tmp_error_stream, |
1311 | &disabled_breaks, &process_warning, | |
1312 | &hw_breakpoint_error); | |
1313 | if (val) | |
e236ba44 | 1314 | error = val; |
879bfdc2 | 1315 | } |
c906108c | 1316 | |
a5606eee VP |
1317 | /* If we failed to insert all locations of a watchpoint, |
1318 | remove them, as half-inserted watchpoint is of limited use. */ | |
1319 | ALL_BREAKPOINTS (bpt) | |
1320 | { | |
1321 | int some_failed = 0; | |
1322 | struct bp_location *loc; | |
1323 | ||
1324 | if (!is_hardware_watchpoint (bpt)) | |
1325 | continue; | |
1326 | ||
1327 | if (bpt->enable_state != bp_enabled) | |
1328 | continue; | |
74960c60 VP |
1329 | |
1330 | if (bpt->disposition == disp_del_at_next_stop) | |
1331 | continue; | |
a5606eee VP |
1332 | |
1333 | for (loc = bpt->loc; loc; loc = loc->next) | |
1334 | if (!loc->inserted) | |
1335 | { | |
1336 | some_failed = 1; | |
1337 | break; | |
1338 | } | |
1339 | if (some_failed) | |
1340 | { | |
1341 | for (loc = bpt->loc; loc; loc = loc->next) | |
1342 | if (loc->inserted) | |
1343 | remove_breakpoint (loc, mark_uninserted); | |
1344 | ||
1345 | hw_breakpoint_error = 1; | |
1346 | fprintf_unfiltered (tmp_error_stream, | |
1347 | "Could not insert hardware watchpoint %d.\n", | |
1348 | bpt->number); | |
1349 | error = -1; | |
1350 | } | |
1351 | } | |
1352 | ||
e236ba44 | 1353 | if (error) |
81d0cc19 GS |
1354 | { |
1355 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1356 | message about possibly exhausted resources. */ | |
879bfdc2 | 1357 | if (hw_breakpoint_error) |
81d0cc19 | 1358 | { |
c6510018 MS |
1359 | fprintf_unfiltered (tmp_error_stream, |
1360 | "Could not insert hardware breakpoints:\n\ | |
1361 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1362 | } |
c6510018 | 1363 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1364 | if (process_warning) |
c6510018 MS |
1365 | fprintf_unfiltered (tmp_error_stream, |
1366 | "The same program may be running in another process."); | |
1367 | #endif | |
81d0cc19 GS |
1368 | target_terminal_ours_for_output (); |
1369 | error_stream (tmp_error_stream); | |
1370 | } | |
c906108c SS |
1371 | } |
1372 | ||
c906108c | 1373 | int |
fba45db2 | 1374 | remove_breakpoints (void) |
c906108c | 1375 | { |
0bde7532 | 1376 | struct bp_location *b; |
c906108c SS |
1377 | int val; |
1378 | ||
0bde7532 | 1379 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1380 | { |
0bde7532 | 1381 | if (b->inserted) |
c5aa993b JM |
1382 | { |
1383 | val = remove_breakpoint (b, mark_uninserted); | |
1384 | if (val != 0) | |
1385 | return val; | |
1386 | } | |
1387 | } | |
c906108c SS |
1388 | return 0; |
1389 | } | |
1390 | ||
692590c1 | 1391 | int |
80ce1ecb | 1392 | remove_hw_watchpoints (void) |
692590c1 | 1393 | { |
0bde7532 | 1394 | struct bp_location *b; |
692590c1 MS |
1395 | int val; |
1396 | ||
0bde7532 | 1397 | ALL_BP_LOCATIONS (b) |
692590c1 | 1398 | { |
0bde7532 | 1399 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1400 | { |
1401 | val = remove_breakpoint (b, mark_uninserted); | |
1402 | if (val != 0) | |
1403 | return val; | |
1404 | } | |
1405 | } | |
1406 | return 0; | |
1407 | } | |
1408 | ||
c906108c | 1409 | int |
fba45db2 | 1410 | reattach_breakpoints (int pid) |
c906108c | 1411 | { |
0bde7532 | 1412 | struct bp_location *b; |
c906108c | 1413 | int val; |
ce696e05 | 1414 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1415 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1416 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1417 | ||
1418 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1419 | |
ce696e05 | 1420 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1421 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1422 | { |
0bde7532 | 1423 | if (b->inserted) |
c5aa993b | 1424 | { |
a4954f26 DJ |
1425 | b->inserted = 0; |
1426 | val = insert_bp_location (b, tmp_error_stream, | |
1427 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1428 | if (val != 0) |
1429 | { | |
ce696e05 | 1430 | do_cleanups (old_chain); |
c5aa993b JM |
1431 | return val; |
1432 | } | |
1433 | } | |
1434 | } | |
ce696e05 | 1435 | do_cleanups (old_chain); |
c906108c SS |
1436 | return 0; |
1437 | } | |
1438 | ||
1439 | void | |
fba45db2 | 1440 | update_breakpoints_after_exec (void) |
c906108c | 1441 | { |
c5aa993b JM |
1442 | struct breakpoint *b; |
1443 | struct breakpoint *temp; | |
25b22b0a | 1444 | struct bp_location *bploc; |
c906108c | 1445 | |
25b22b0a PA |
1446 | /* We're about to delete breakpoints from GDB's lists. If the |
1447 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1448 | writing the breakpoints' "shadow contents" back into memory. The | |
1449 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1450 | do that. Instead, the target is responsible from marking | |
1451 | breakpoints out as soon as it detects an exec. We don't do that | |
1452 | here instead, because there may be other attempts to delete | |
1453 | breakpoints after detecting an exec and before reaching here. */ | |
1454 | ALL_BP_LOCATIONS (bploc) | |
1455 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1456 | |
1457 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1458 | { |
1459 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1460 | if (b->type == bp_shlib_event) | |
1461 | { | |
1462 | delete_breakpoint (b); | |
1463 | continue; | |
1464 | } | |
c906108c | 1465 | |
1900040c MS |
1466 | /* Thread event breakpoints must be set anew after an exec(), |
1467 | as must overlay event breakpoints. */ | |
1468 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1469 | { |
1470 | delete_breakpoint (b); | |
1471 | continue; | |
1472 | } | |
1473 | ||
c5aa993b JM |
1474 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1475 | if (b->type == bp_step_resume) | |
1476 | { | |
1477 | delete_breakpoint (b); | |
1478 | continue; | |
1479 | } | |
1480 | ||
611c83ae PA |
1481 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1482 | after an exec. */ | |
1483 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1484 | { | |
1485 | delete_breakpoint (b); | |
1486 | continue; | |
1487 | } | |
1488 | ||
c5aa993b JM |
1489 | /* Don't delete an exec catchpoint, because else the inferior |
1490 | won't stop when it ought! | |
1491 | ||
1492 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1493 | on this target, we may not be able to stop when the vfork is |
1494 | seen, but only when the subsequent exec is seen. (And because | |
1495 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1496 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1497 | if ((b->type == bp_catch_exec) || |
1498 | (b->type == bp_catch_vfork) || | |
1499 | (b->type == bp_catch_fork)) | |
1500 | { | |
c5aa993b JM |
1501 | continue; |
1502 | } | |
1503 | ||
1504 | /* bp_finish is a special case. The only way we ought to be able | |
1505 | to see one of these when an exec() has happened, is if the user | |
1506 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1507 | carries them to the call-site of the current callee, by setting | |
1508 | a temporary bp there and resuming. But in this case, the finish | |
1509 | will carry them entirely through the vfork & exec. | |
1510 | ||
1511 | We don't want to allow a bp_finish to remain inserted now. But | |
1512 | we can't safely delete it, 'cause finish_command has a handle to | |
1513 | the bp on a bpstat, and will later want to delete it. There's a | |
1514 | chance (and I've seen it happen) that if we delete the bp_finish | |
1515 | here, that its storage will get reused by the time finish_command | |
1516 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1517 | We really must allow finish_command to delete a bp_finish. | |
1518 | ||
53a5351d JM |
1519 | In the absense of a general solution for the "how do we know |
1520 | it's safe to delete something others may have handles to?" | |
1521 | problem, what we'll do here is just uninsert the bp_finish, and | |
1522 | let finish_command delete it. | |
1523 | ||
1524 | (We know the bp_finish is "doomed" in the sense that it's | |
1525 | momentary, and will be deleted as soon as finish_command sees | |
1526 | the inferior stopped. So it doesn't matter that the bp's | |
1527 | address is probably bogus in the new a.out, unlike e.g., the | |
1528 | solib breakpoints.) */ | |
c5aa993b | 1529 | |
c5aa993b JM |
1530 | if (b->type == bp_finish) |
1531 | { | |
1532 | continue; | |
1533 | } | |
1534 | ||
1535 | /* Without a symbolic address, we have little hope of the | |
1536 | pre-exec() address meaning the same thing in the post-exec() | |
1537 | a.out. */ | |
1538 | if (b->addr_string == NULL) | |
1539 | { | |
1540 | delete_breakpoint (b); | |
1541 | continue; | |
1542 | } | |
c5aa993b | 1543 | } |
1900040c MS |
1544 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1545 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1546 | } |
1547 | ||
1548 | int | |
fba45db2 | 1549 | detach_breakpoints (int pid) |
c906108c | 1550 | { |
0bde7532 | 1551 | struct bp_location *b; |
c906108c | 1552 | int val; |
ce696e05 | 1553 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1554 | |
39f77062 | 1555 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1556 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1557 | |
ce696e05 KB |
1558 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1559 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1560 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1561 | { |
0bde7532 | 1562 | if (b->inserted) |
c5aa993b JM |
1563 | { |
1564 | val = remove_breakpoint (b, mark_inserted); | |
1565 | if (val != 0) | |
1566 | { | |
ce696e05 | 1567 | do_cleanups (old_chain); |
c5aa993b JM |
1568 | return val; |
1569 | } | |
1570 | } | |
1571 | } | |
ce696e05 | 1572 | do_cleanups (old_chain); |
c906108c SS |
1573 | return 0; |
1574 | } | |
1575 | ||
1576 | static int | |
0bde7532 | 1577 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1578 | { |
1579 | int val; | |
c5aa993b | 1580 | |
0bde7532 | 1581 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1582 | /* Permanent breakpoints cannot be inserted or removed. */ |
1583 | return 0; | |
1584 | ||
74960c60 VP |
1585 | /* The type of none suggests that owner is actually deleted. |
1586 | This should not ever happen. */ | |
1587 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1588 | |
1589 | if (b->loc_type == bp_loc_software_breakpoint | |
1590 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1591 | { |
c02f5703 MS |
1592 | /* "Normal" instruction breakpoint: either the standard |
1593 | trap-instruction bp (bp_breakpoint), or a | |
1594 | bp_hardware_breakpoint. */ | |
1595 | ||
1596 | /* First check to see if we have to handle an overlay. */ | |
1597 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1598 | || b->section == NULL |
1599 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1600 | { |
1601 | /* No overlay handling: just remove the breakpoint. */ | |
1602 | ||
0bde7532 | 1603 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1604 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1605 | else |
8181d85f | 1606 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1607 | } |
c906108c SS |
1608 | else |
1609 | { | |
c02f5703 MS |
1610 | /* This breakpoint is in an overlay section. |
1611 | Did we set a breakpoint at the LMA? */ | |
1612 | if (!overlay_events_enabled) | |
1613 | { | |
1614 | /* Yes -- overlay event support is not active, so we | |
1615 | should have set a breakpoint at the LMA. Remove it. | |
1616 | */ | |
c02f5703 MS |
1617 | /* Ignore any failures: if the LMA is in ROM, we will |
1618 | have already warned when we failed to insert it. */ | |
0bde7532 | 1619 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1620 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1621 | else |
8181d85f | 1622 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1623 | } |
1624 | /* Did we set a breakpoint at the VMA? | |
1625 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1626 | if (b->inserted) |
c906108c | 1627 | { |
c02f5703 MS |
1628 | /* Yes -- remove it. Previously we did not bother to |
1629 | remove the breakpoint if the section had been | |
1630 | unmapped, but let's not rely on that being safe. We | |
1631 | don't know what the overlay manager might do. */ | |
0bde7532 | 1632 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1633 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1634 | |
1635 | /* However, we should remove *software* breakpoints only | |
1636 | if the section is still mapped, or else we overwrite | |
1637 | wrong code with the saved shadow contents. */ | |
1638 | else if (section_is_mapped (b->section)) | |
8181d85f | 1639 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1640 | else |
1641 | val = 0; | |
c906108c | 1642 | } |
c02f5703 MS |
1643 | else |
1644 | { | |
1645 | /* No -- not inserted, so no need to remove. No error. */ | |
1646 | val = 0; | |
1647 | } | |
c906108c SS |
1648 | } |
1649 | if (val) | |
1650 | return val; | |
0bde7532 | 1651 | b->inserted = (is == mark_inserted); |
c906108c | 1652 | } |
a5606eee | 1653 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1654 | { |
278cd55f AC |
1655 | struct value *v; |
1656 | struct value *n; | |
c5aa993b | 1657 | |
0bde7532 | 1658 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1659 | val = target_remove_watchpoint (b->address, b->length, |
1660 | b->watchpoint_type); | |
2e70b7b9 | 1661 | |
c906108c | 1662 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1663 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1664 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1665 | b->owner->number); |
c906108c | 1666 | } |
0bde7532 DJ |
1667 | else if ((b->owner->type == bp_catch_fork || |
1668 | b->owner->type == bp_catch_vfork || | |
1669 | b->owner->type == bp_catch_exec) | |
468d015d | 1670 | && breakpoint_enabled (b->owner) |
0bde7532 | 1671 | && !b->duplicate) |
c906108c SS |
1672 | { |
1673 | val = -1; | |
0bde7532 | 1674 | switch (b->owner->type) |
c5aa993b JM |
1675 | { |
1676 | case bp_catch_fork: | |
39f77062 | 1677 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1678 | break; |
1679 | case bp_catch_vfork: | |
39f77062 | 1680 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1681 | break; |
1682 | case bp_catch_exec: | |
39f77062 | 1683 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1684 | break; |
ac9a91a7 | 1685 | default: |
8a3fe4f8 | 1686 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1687 | break; |
c5aa993b | 1688 | } |
c906108c SS |
1689 | if (val) |
1690 | return val; | |
0bde7532 | 1691 | b->inserted = (is == mark_inserted); |
c906108c | 1692 | } |
c906108c SS |
1693 | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | /* Clear the "inserted" flag in all breakpoints. */ | |
1698 | ||
25b22b0a | 1699 | void |
fba45db2 | 1700 | mark_breakpoints_out (void) |
c906108c | 1701 | { |
075f6582 | 1702 | struct bp_location *bpt; |
c906108c | 1703 | |
075f6582 DJ |
1704 | ALL_BP_LOCATIONS (bpt) |
1705 | bpt->inserted = 0; | |
c906108c SS |
1706 | } |
1707 | ||
53a5351d JM |
1708 | /* Clear the "inserted" flag in all breakpoints and delete any |
1709 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1710 | |
1711 | Plus other such housekeeping that has to be done for breakpoints | |
1712 | between runs. | |
1713 | ||
53a5351d JM |
1714 | Note: this function gets called at the end of a run (by |
1715 | generic_mourn_inferior) and when a run begins (by | |
1716 | init_wait_for_inferior). */ | |
c906108c SS |
1717 | |
1718 | ||
1719 | ||
1720 | void | |
fba45db2 | 1721 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1722 | { |
52f0bd74 | 1723 | struct breakpoint *b, *temp; |
075f6582 | 1724 | struct bp_location *bpt; |
c906108c | 1725 | |
075f6582 DJ |
1726 | ALL_BP_LOCATIONS (bpt) |
1727 | bpt->inserted = 0; | |
1728 | ||
c906108c | 1729 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1730 | { |
c5aa993b JM |
1731 | switch (b->type) |
1732 | { | |
1733 | case bp_call_dummy: | |
1734 | case bp_watchpoint_scope: | |
c906108c | 1735 | |
c5aa993b JM |
1736 | /* If the call dummy breakpoint is at the entry point it will |
1737 | cause problems when the inferior is rerun, so we better | |
1738 | get rid of it. | |
c906108c | 1739 | |
c5aa993b JM |
1740 | Also get rid of scope breakpoints. */ |
1741 | delete_breakpoint (b); | |
1742 | break; | |
c906108c | 1743 | |
c5aa993b JM |
1744 | case bp_watchpoint: |
1745 | case bp_hardware_watchpoint: | |
1746 | case bp_read_watchpoint: | |
1747 | case bp_access_watchpoint: | |
c906108c | 1748 | |
c5aa993b JM |
1749 | /* Likewise for watchpoints on local expressions. */ |
1750 | if (b->exp_valid_block != NULL) | |
1751 | delete_breakpoint (b); | |
967af18d | 1752 | else if (context == inf_starting) |
c860120c PM |
1753 | { |
1754 | /* Reset val field to force reread of starting value | |
1755 | in insert_breakpoints. */ | |
1756 | if (b->val) | |
1757 | value_free (b->val); | |
1758 | b->val = NULL; | |
fa4727a6 | 1759 | b->val_valid = 0; |
c860120c | 1760 | } |
c5aa993b JM |
1761 | break; |
1762 | default: | |
c5aa993b JM |
1763 | break; |
1764 | } | |
1765 | } | |
c906108c SS |
1766 | } |
1767 | ||
c2c6d25f JM |
1768 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1769 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1770 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1771 | permanent breakpoint. | |
1772 | - When continuing from a location with an ordinary breakpoint, we | |
1773 | actually single step once before calling insert_breakpoints. | |
1774 | - When continuing from a localion with a permanent breakpoint, we | |
1775 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1776 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1777 | |
c2c6d25f | 1778 | enum breakpoint_here |
fba45db2 | 1779 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1780 | { |
89f9893c | 1781 | const struct bp_location *bpt; |
c2c6d25f | 1782 | int any_breakpoint_here = 0; |
c906108c | 1783 | |
075f6582 DJ |
1784 | ALL_BP_LOCATIONS (bpt) |
1785 | { | |
1786 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1787 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1788 | continue; | |
1789 | ||
468d015d | 1790 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1791 | || bpt->owner->enable_state == bp_permanent) |
1792 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1793 | { | |
1794 | if (overlay_debugging | |
1795 | && section_is_overlay (bpt->section) | |
1796 | && !section_is_mapped (bpt->section)) | |
1797 | continue; /* unmapped overlay -- can't be a match */ | |
1798 | else if (bpt->owner->enable_state == bp_permanent) | |
1799 | return permanent_breakpoint_here; | |
1800 | else | |
1801 | any_breakpoint_here = 1; | |
1802 | } | |
1803 | } | |
c906108c | 1804 | |
c2c6d25f | 1805 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1806 | } |
1807 | ||
c2c6d25f | 1808 | |
c36b740a VP |
1809 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1810 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1811 | This does not check for single-step breakpoints, which are | |
1812 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1813 | |
1814 | int | |
c36b740a | 1815 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1816 | { |
89f9893c | 1817 | const struct bp_location *bpt; |
c906108c | 1818 | |
075f6582 | 1819 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1820 | { |
075f6582 DJ |
1821 | if (bpt->loc_type != bp_loc_software_breakpoint |
1822 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1823 | continue; | |
1824 | ||
1825 | if (bpt->inserted | |
1826 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1827 | { | |
1828 | if (overlay_debugging | |
1829 | && section_is_overlay (bpt->section) | |
1830 | && !section_is_mapped (bpt->section)) | |
1831 | continue; /* unmapped overlay -- can't be a match */ | |
1832 | else | |
1833 | return 1; | |
1834 | } | |
c5aa993b | 1835 | } |
c36b740a VP |
1836 | return 0; |
1837 | } | |
1838 | ||
1839 | /* Returns non-zero iff there's either regular breakpoint | |
1840 | or a single step breakpoint inserted at PC. */ | |
1841 | ||
1842 | int | |
1843 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1844 | { | |
1845 | if (regular_breakpoint_inserted_here_p (pc)) | |
1846 | return 1; | |
c906108c | 1847 | |
1aafd4da UW |
1848 | if (single_step_breakpoint_inserted_here_p (pc)) |
1849 | return 1; | |
1850 | ||
c906108c SS |
1851 | return 0; |
1852 | } | |
1853 | ||
4fa8626c DJ |
1854 | /* This function returns non-zero iff there is a software breakpoint |
1855 | inserted at PC. */ | |
1856 | ||
1857 | int | |
1858 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1859 | { | |
89f9893c | 1860 | const struct bp_location *bpt; |
4fa8626c DJ |
1861 | int any_breakpoint_here = 0; |
1862 | ||
1863 | ALL_BP_LOCATIONS (bpt) | |
1864 | { | |
1865 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1866 | continue; | |
1867 | ||
0d381245 | 1868 | if (bpt->inserted |
4fa8626c DJ |
1869 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1870 | { | |
1871 | if (overlay_debugging | |
1872 | && section_is_overlay (bpt->section) | |
1873 | && !section_is_mapped (bpt->section)) | |
1874 | continue; /* unmapped overlay -- can't be a match */ | |
1875 | else | |
1876 | return 1; | |
1877 | } | |
1878 | } | |
1879 | ||
1aafd4da UW |
1880 | /* Also check for software single-step breakpoints. */ |
1881 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1882 | return 1; | |
1883 | ||
4fa8626c DJ |
1884 | return 0; |
1885 | } | |
1886 | ||
075f6582 DJ |
1887 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1888 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1889 | |
1890 | int | |
39f77062 | 1891 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1892 | { |
89f9893c | 1893 | const struct bp_location *bpt; |
c906108c SS |
1894 | int thread; |
1895 | ||
39f77062 | 1896 | thread = pid_to_thread_id (ptid); |
c906108c | 1897 | |
075f6582 | 1898 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1899 | { |
075f6582 DJ |
1900 | if (bpt->loc_type != bp_loc_software_breakpoint |
1901 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1902 | continue; | |
1903 | ||
468d015d | 1904 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1905 | || bpt->owner->enable_state == bp_permanent) |
1906 | && bpt->address == pc | |
1907 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1908 | { | |
1909 | if (overlay_debugging | |
1910 | && section_is_overlay (bpt->section) | |
1911 | && !section_is_mapped (bpt->section)) | |
1912 | continue; /* unmapped overlay -- can't be a match */ | |
1913 | else | |
1914 | return 1; | |
1915 | } | |
c5aa993b | 1916 | } |
c906108c SS |
1917 | |
1918 | return 0; | |
1919 | } | |
c906108c | 1920 | \f |
c5aa993b | 1921 | |
c906108c SS |
1922 | /* bpstat stuff. External routines' interfaces are documented |
1923 | in breakpoint.h. */ | |
1924 | ||
1925 | int | |
fba45db2 | 1926 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1927 | { |
1928 | return | |
1929 | (ep->type == bp_catch_load) | |
1930 | || (ep->type == bp_catch_unload) | |
1931 | || (ep->type == bp_catch_fork) | |
1932 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1933 | || (ep->type == bp_catch_exec); |
c906108c | 1934 | |
c5aa993b | 1935 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1936 | } |
c5aa993b | 1937 | |
c906108c | 1938 | int |
fba45db2 | 1939 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1940 | { |
1941 | return | |
1942 | (ep->type == bp_catch_load) | |
d85310f7 | 1943 | || (ep->type == bp_catch_unload); |
c906108c SS |
1944 | } |
1945 | ||
198757a8 VP |
1946 | void |
1947 | bpstat_free (bpstat bs) | |
1948 | { | |
1949 | if (bs->old_val != NULL) | |
1950 | value_free (bs->old_val); | |
1951 | free_command_lines (&bs->commands); | |
1952 | xfree (bs); | |
1953 | } | |
1954 | ||
c906108c SS |
1955 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1956 | Also free any storage that is part of a bpstat. */ | |
1957 | ||
1958 | void | |
fba45db2 | 1959 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1960 | { |
1961 | bpstat p; | |
1962 | bpstat q; | |
1963 | ||
1964 | if (bsp == 0) | |
1965 | return; | |
1966 | p = *bsp; | |
1967 | while (p != NULL) | |
1968 | { | |
1969 | q = p->next; | |
198757a8 | 1970 | bpstat_free (p); |
c906108c SS |
1971 | p = q; |
1972 | } | |
1973 | *bsp = NULL; | |
1974 | } | |
1975 | ||
1976 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1977 | is part of the bpstat is copied as well. */ | |
1978 | ||
1979 | bpstat | |
fba45db2 | 1980 | bpstat_copy (bpstat bs) |
c906108c SS |
1981 | { |
1982 | bpstat p = NULL; | |
1983 | bpstat tmp; | |
1984 | bpstat retval = NULL; | |
1985 | ||
1986 | if (bs == NULL) | |
1987 | return bs; | |
1988 | ||
1989 | for (; bs != NULL; bs = bs->next) | |
1990 | { | |
1991 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1992 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1993 | if (bs->commands != NULL) |
1994 | tmp->commands = copy_command_lines (bs->commands); | |
1995 | if (bs->old_val != NULL) | |
3c3185ac JK |
1996 | { |
1997 | tmp->old_val = value_copy (bs->old_val); | |
1998 | release_value (tmp->old_val); | |
1999 | } | |
31cc81e9 | 2000 | |
c906108c SS |
2001 | if (p == NULL) |
2002 | /* This is the first thing in the chain. */ | |
2003 | retval = tmp; | |
2004 | else | |
2005 | p->next = tmp; | |
2006 | p = tmp; | |
2007 | } | |
2008 | p->next = NULL; | |
2009 | return retval; | |
2010 | } | |
2011 | ||
2012 | /* Find the bpstat associated with this breakpoint */ | |
2013 | ||
2014 | bpstat | |
fba45db2 | 2015 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2016 | { |
c5aa993b JM |
2017 | if (bsp == NULL) |
2018 | return NULL; | |
c906108c | 2019 | |
c5aa993b JM |
2020 | for (; bsp != NULL; bsp = bsp->next) |
2021 | { | |
4f8d1dc6 | 2022 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2023 | return bsp; |
2024 | } | |
c906108c SS |
2025 | return NULL; |
2026 | } | |
2027 | ||
2028 | /* Find a step_resume breakpoint associated with this bpstat. | |
2029 | (If there are multiple step_resume bp's on the list, this function | |
2030 | will arbitrarily pick one.) | |
2031 | ||
2032 | It is an error to use this function if BPSTAT doesn't contain a | |
2033 | step_resume breakpoint. | |
2034 | ||
2035 | See wait_for_inferior's use of this function. */ | |
2036 | struct breakpoint * | |
fba45db2 | 2037 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2038 | { |
8601f500 MS |
2039 | int current_thread; |
2040 | ||
8a3fe4f8 | 2041 | gdb_assert (bsp != NULL); |
c906108c | 2042 | |
8601f500 MS |
2043 | current_thread = pid_to_thread_id (inferior_ptid); |
2044 | ||
c906108c SS |
2045 | for (; bsp != NULL; bsp = bsp->next) |
2046 | { | |
2047 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2048 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2049 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2050 | bsp->breakpoint_at->owner->thread == -1)) | |
2051 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2052 | } |
2053 | ||
8a3fe4f8 | 2054 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2055 | } |
2056 | ||
2057 | ||
8671a17b | 2058 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2059 | at. *BSP upon return is a bpstat which points to the remaining |
2060 | breakpoints stopped at (but which is not guaranteed to be good for | |
2061 | anything but further calls to bpstat_num). | |
8671a17b PA |
2062 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2063 | Return -1 if stopped at a breakpoint that has been deleted since | |
2064 | we set it. | |
2065 | Return 1 otherwise. */ | |
c906108c SS |
2066 | |
2067 | int | |
8671a17b | 2068 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2069 | { |
2070 | struct breakpoint *b; | |
2071 | ||
2072 | if ((*bsp) == NULL) | |
2073 | return 0; /* No more breakpoint values */ | |
8671a17b | 2074 | |
4f8d1dc6 VP |
2075 | /* We assume we'll never have several bpstats that |
2076 | correspond to a single breakpoint -- otherwise, | |
2077 | this function might return the same number more | |
2078 | than once and this will look ugly. */ | |
2079 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2080 | *bsp = (*bsp)->next; |
2081 | if (b == NULL) | |
2082 | return -1; /* breakpoint that's been deleted since */ | |
2083 | ||
2084 | *num = b->number; /* We have its number */ | |
2085 | return 1; | |
c906108c SS |
2086 | } |
2087 | ||
2088 | /* Modify BS so that the actions will not be performed. */ | |
2089 | ||
2090 | void | |
fba45db2 | 2091 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2092 | { |
2093 | for (; bs != NULL; bs = bs->next) | |
2094 | { | |
c2b8ed2c | 2095 | free_command_lines (&bs->commands); |
c906108c SS |
2096 | if (bs->old_val != NULL) |
2097 | { | |
2098 | value_free (bs->old_val); | |
2099 | bs->old_val = NULL; | |
2100 | } | |
2101 | } | |
2102 | } | |
2103 | ||
2104 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2105 | static void |
4efb68b1 | 2106 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2107 | { |
2108 | executing_breakpoint_commands = 0; | |
2109 | } | |
2110 | ||
2111 | /* Execute all the commands associated with all the breakpoints at this | |
2112 | location. Any of these commands could cause the process to proceed | |
2113 | beyond this point, etc. We look out for such changes by checking | |
2114 | the global "breakpoint_proceeded" after each command. */ | |
2115 | ||
2116 | void | |
fba45db2 | 2117 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
2118 | { |
2119 | bpstat bs; | |
2120 | struct cleanup *old_chain; | |
c906108c SS |
2121 | |
2122 | /* Avoid endless recursion if a `source' command is contained | |
2123 | in bs->commands. */ | |
2124 | if (executing_breakpoint_commands) | |
2125 | return; | |
2126 | ||
2127 | executing_breakpoint_commands = 1; | |
2128 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2129 | ||
2130 | top: | |
2131 | /* Note that (as of this writing), our callers all appear to | |
2132 | be passing us the address of global stop_bpstat. And, if | |
2133 | our calls to execute_control_command cause the inferior to | |
2134 | proceed, that global (and hence, *bsp) will change. | |
2135 | ||
2136 | We must be careful to not touch *bsp unless the inferior | |
2137 | has not proceeded. */ | |
2138 | ||
2139 | /* This pointer will iterate over the list of bpstat's. */ | |
2140 | bs = *bsp; | |
2141 | ||
2142 | breakpoint_proceeded = 0; | |
2143 | for (; bs != NULL; bs = bs->next) | |
2144 | { | |
6c50ab1c JB |
2145 | struct command_line *cmd; |
2146 | struct cleanup *this_cmd_tree_chain; | |
2147 | ||
2148 | /* Take ownership of the BSP's command tree, if it has one. | |
2149 | ||
2150 | The command tree could legitimately contain commands like | |
2151 | 'step' and 'next', which call clear_proceed_status, which | |
2152 | frees stop_bpstat's command tree. To make sure this doesn't | |
2153 | free the tree we're executing out from under us, we need to | |
2154 | take ownership of the tree ourselves. Since a given bpstat's | |
2155 | commands are only executed once, we don't need to copy it; we | |
2156 | can clear the pointer in the bpstat, and make sure we free | |
2157 | the tree when we're done. */ | |
c906108c | 2158 | cmd = bs->commands; |
6c50ab1c JB |
2159 | bs->commands = 0; |
2160 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2161 | ||
c906108c SS |
2162 | while (cmd != NULL) |
2163 | { | |
2164 | execute_control_command (cmd); | |
2165 | ||
2166 | if (breakpoint_proceeded) | |
2167 | break; | |
2168 | else | |
2169 | cmd = cmd->next; | |
2170 | } | |
6c50ab1c JB |
2171 | |
2172 | /* We can free this command tree now. */ | |
2173 | do_cleanups (this_cmd_tree_chain); | |
2174 | ||
c906108c | 2175 | if (breakpoint_proceeded) |
32c1e744 VP |
2176 | { |
2177 | if (target_can_async_p ()) | |
2178 | /* If we are in async mode, then the target might | |
2179 | be still running, not stopped at any breakpoint, | |
2180 | so nothing for us to do here -- just return to | |
2181 | the event loop. */ | |
2182 | break; | |
2183 | else | |
2184 | /* In sync mode, when execute_control_command returns | |
2185 | we're already standing on the next breakpoint. | |
2186 | Breakpoint commands for that stop were not run, | |
2187 | since execute_command does not run breakpoint | |
2188 | commands -- only command_line_handler does, but | |
2189 | that one is not involved in execution of breakpoint | |
2190 | commands. So, we can now execute breakpoint commands. | |
2191 | There's an implicit assumption that we're called with | |
2192 | stop_bpstat, so our parameter is the new bpstat to | |
2193 | handle. | |
2194 | It should be noted that making execute_command do | |
2195 | bpstat actions is not an option -- in this case we'll | |
2196 | have recursive invocation of bpstat for each breakpoint | |
2197 | with a command, and can easily blow up GDB stack. */ | |
2198 | goto top; | |
2199 | } | |
c906108c | 2200 | } |
c2b8ed2c | 2201 | do_cleanups (old_chain); |
c906108c SS |
2202 | } |
2203 | ||
fa4727a6 DJ |
2204 | /* Print out the (old or new) value associated with a watchpoint. */ |
2205 | ||
2206 | static void | |
2207 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2208 | { | |
2209 | if (val == NULL) | |
2210 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2211 | else | |
2212 | value_print (val, stream, 0, Val_pretty_default); | |
2213 | } | |
2214 | ||
e514a9d6 | 2215 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2216 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2217 | by having it set different print_it values. |
2218 | ||
2219 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2220 | through the bpstat list of things causing this stop, calling the | |
2221 | print_bp_stop_message function on each one. The behavior of the | |
2222 | print_bp_stop_message function depends on the print_it field of | |
2223 | bpstat. If such field so indicates, call this function here. | |
2224 | ||
2225 | Return values from this routine (ultimately used by bpstat_print() | |
2226 | and normal_stop() to decide what to do): | |
2227 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2228 | don't print anything else. | |
2229 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2230 | that something to be followed by a location. | |
2231 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2232 | that something to be followed by a location. | |
2233 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2234 | analysis. */ | |
c906108c | 2235 | |
917317f4 | 2236 | static enum print_stop_action |
fba45db2 | 2237 | print_it_typical (bpstat bs) |
c906108c | 2238 | { |
3b31d625 | 2239 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2240 | struct breakpoint *b; |
89f9893c | 2241 | const struct bp_location *bl; |
8b93c638 | 2242 | struct ui_stream *stb; |
2cec12e5 | 2243 | int bp_temp = 0; |
8b93c638 | 2244 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2245 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2246 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2247 | which has since been deleted. */ | |
e514a9d6 | 2248 | if (bs->breakpoint_at == NULL) |
917317f4 | 2249 | return PRINT_UNKNOWN; |
0d381245 VP |
2250 | bl = bs->breakpoint_at; |
2251 | b = bl->owner; | |
c906108c | 2252 | |
4f8d1dc6 | 2253 | switch (b->type) |
c906108c | 2254 | { |
e514a9d6 JM |
2255 | case bp_breakpoint: |
2256 | case bp_hardware_breakpoint: | |
2cec12e5 | 2257 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2258 | if (bl->address != bl->requested_address) |
2259 | breakpoint_adjustment_warning (bl->requested_address, | |
2260 | bl->address, | |
4f8d1dc6 VP |
2261 | b->number, 1); |
2262 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2263 | if (bp_temp) |
2264 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2265 | else | |
2266 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2267 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2268 | { |
2269 | ui_out_field_string (uiout, "reason", | |
2270 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2271 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2272 | } | |
4f8d1dc6 | 2273 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2274 | ui_out_text (uiout, ", "); |
2275 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2276 | break; |
2277 | ||
2278 | case bp_shlib_event: | |
917317f4 JM |
2279 | /* Did we stop because the user set the stop_on_solib_events |
2280 | variable? (If so, we report this as a generic, "Stopped due | |
2281 | to shlib event" message.) */ | |
a3f17187 | 2282 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2283 | return PRINT_NOTHING; |
2284 | break; | |
2285 | ||
c4093a6a JM |
2286 | case bp_thread_event: |
2287 | /* Not sure how we will get here. | |
2288 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2289 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2290 | return PRINT_NOTHING; |
2291 | break; | |
2292 | ||
1900040c MS |
2293 | case bp_overlay_event: |
2294 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2295 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2296 | return PRINT_NOTHING; |
2297 | break; | |
2298 | ||
e514a9d6 | 2299 | case bp_catch_load: |
4f8d1dc6 | 2300 | annotate_catchpoint (b->number); |
a3f17187 | 2301 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2302 | b->number, |
2303 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2304 | return PRINT_SRC_AND_LOC; |
2305 | break; | |
2306 | ||
2307 | case bp_catch_unload: | |
4f8d1dc6 | 2308 | annotate_catchpoint (b->number); |
a3f17187 | 2309 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2310 | b->number, |
2311 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2312 | return PRINT_SRC_AND_LOC; |
2313 | break; | |
2314 | ||
2315 | case bp_catch_fork: | |
4f8d1dc6 | 2316 | annotate_catchpoint (b->number); |
a3f17187 | 2317 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 | 2318 | b->number, |
3a3e9ee3 | 2319 | ptid_get_pid (b->forked_inferior_pid)); |
917317f4 | 2320 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2321 | break; |
2322 | ||
2323 | case bp_catch_vfork: | |
4f8d1dc6 | 2324 | annotate_catchpoint (b->number); |
a3f17187 | 2325 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 | 2326 | b->number, |
3a3e9ee3 | 2327 | ptid_get_pid (b->forked_inferior_pid)); |
e514a9d6 JM |
2328 | return PRINT_SRC_AND_LOC; |
2329 | break; | |
2330 | ||
2331 | case bp_catch_exec: | |
4f8d1dc6 | 2332 | annotate_catchpoint (b->number); |
a3f17187 | 2333 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2334 | b->number, |
2335 | b->exec_pathname); | |
917317f4 | 2336 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2337 | break; |
2338 | ||
e514a9d6 JM |
2339 | case bp_watchpoint: |
2340 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2341 | annotate_watchpoint (b->number); |
2342 | if (ui_out_is_mi_like_p (uiout)) | |
2343 | ui_out_field_string | |
2344 | (uiout, "reason", | |
2345 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2346 | mention (b); | |
2347 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2348 | ui_out_text (uiout, "\nOld value = "); | |
2349 | watchpoint_value_print (bs->old_val, stb->stream); | |
2350 | ui_out_field_stream (uiout, "old", stb); | |
2351 | ui_out_text (uiout, "\nNew value = "); | |
2352 | watchpoint_value_print (b->val, stb->stream); | |
2353 | ui_out_field_stream (uiout, "new", stb); | |
2354 | do_cleanups (ui_out_chain); | |
2355 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2356 | /* More than one watchpoint may have been triggered. */ |
2357 | return PRINT_UNKNOWN; | |
2358 | break; | |
2359 | ||
2360 | case bp_read_watchpoint: | |
9dc5e2a9 | 2361 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2362 | ui_out_field_string |
2363 | (uiout, "reason", | |
2364 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2365 | mention (b); |
3b31d625 | 2366 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2367 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2368 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2369 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2370 | do_cleanups (ui_out_chain); |
8b93c638 | 2371 | ui_out_text (uiout, "\n"); |
917317f4 | 2372 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2373 | break; |
2374 | ||
2375 | case bp_access_watchpoint: | |
fa4727a6 | 2376 | if (bs->old_val != NULL) |
8b93c638 | 2377 | { |
4f8d1dc6 | 2378 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2379 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2380 | ui_out_field_string |
2381 | (uiout, "reason", | |
2382 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2383 | mention (b); |
3b31d625 | 2384 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2385 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2386 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2387 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2388 | ui_out_text (uiout, "\nNew value = "); |
2389 | } | |
2390 | else | |
2391 | { | |
4f8d1dc6 | 2392 | mention (b); |
9dc5e2a9 | 2393 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2394 | ui_out_field_string |
2395 | (uiout, "reason", | |
2396 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2397 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2398 | ui_out_text (uiout, "\nValue = "); |
2399 | } | |
fa4727a6 | 2400 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2401 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2402 | do_cleanups (ui_out_chain); |
8b93c638 | 2403 | ui_out_text (uiout, "\n"); |
917317f4 | 2404 | return PRINT_UNKNOWN; |
e514a9d6 | 2405 | break; |
4ce44c66 | 2406 | |
e514a9d6 JM |
2407 | /* Fall through, we don't deal with these types of breakpoints |
2408 | here. */ | |
2409 | ||
11cf8741 | 2410 | case bp_finish: |
9dc5e2a9 | 2411 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2412 | ui_out_field_string |
2413 | (uiout, "reason", | |
2414 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2415 | return PRINT_UNKNOWN; |
2416 | break; | |
2417 | ||
e514a9d6 | 2418 | case bp_until: |
9dc5e2a9 | 2419 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2420 | ui_out_field_string |
2421 | (uiout, "reason", | |
2422 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2423 | return PRINT_UNKNOWN; |
2424 | break; | |
2425 | ||
c2d11a7d | 2426 | case bp_none: |
e514a9d6 JM |
2427 | case bp_longjmp: |
2428 | case bp_longjmp_resume: | |
2429 | case bp_step_resume: | |
e514a9d6 JM |
2430 | case bp_watchpoint_scope: |
2431 | case bp_call_dummy: | |
2432 | default: | |
2433 | return PRINT_UNKNOWN; | |
2434 | } | |
2435 | } | |
2436 | ||
2437 | /* Generic routine for printing messages indicating why we | |
2438 | stopped. The behavior of this function depends on the value | |
2439 | 'print_it' in the bpstat structure. Under some circumstances we | |
2440 | may decide not to print anything here and delegate the task to | |
2441 | normal_stop(). */ | |
2442 | ||
2443 | static enum print_stop_action | |
2444 | print_bp_stop_message (bpstat bs) | |
2445 | { | |
2446 | switch (bs->print_it) | |
2447 | { | |
2448 | case print_it_noop: | |
2449 | /* Nothing should be printed for this bpstat entry. */ | |
2450 | return PRINT_UNKNOWN; | |
2451 | break; | |
2452 | ||
2453 | case print_it_done: | |
2454 | /* We still want to print the frame, but we already printed the | |
2455 | relevant messages. */ | |
2456 | return PRINT_SRC_AND_LOC; | |
2457 | break; | |
2458 | ||
2459 | case print_it_normal: | |
4f8d1dc6 | 2460 | { |
89f9893c | 2461 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2462 | struct breakpoint *b = bl ? bl->owner : NULL; |
2463 | ||
2464 | /* Normal case. Call the breakpoint's print_it method, or | |
2465 | print_it_typical. */ | |
2466 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2467 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2468 | return b->ops->print_it (b); | |
2469 | else | |
2470 | return print_it_typical (bs); | |
2471 | } | |
2472 | break; | |
3086aeae | 2473 | |
e514a9d6 | 2474 | default: |
8e65ff28 | 2475 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2476 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2477 | break; |
c906108c | 2478 | } |
c906108c SS |
2479 | } |
2480 | ||
e514a9d6 JM |
2481 | /* Print a message indicating what happened. This is called from |
2482 | normal_stop(). The input to this routine is the head of the bpstat | |
2483 | list - a list of the eventpoints that caused this stop. This | |
2484 | routine calls the generic print routine for printing a message | |
2485 | about reasons for stopping. This will print (for example) the | |
2486 | "Breakpoint n," part of the output. The return value of this | |
2487 | routine is one of: | |
c906108c | 2488 | |
917317f4 JM |
2489 | PRINT_UNKNOWN: Means we printed nothing |
2490 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2491 | code to print the location. An example is |
2492 | "Breakpoint 1, " which should be followed by | |
2493 | the location. | |
917317f4 | 2494 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2495 | to also print the location part of the message. |
2496 | An example is the catch/throw messages, which | |
917317f4 JM |
2497 | don't require a location appended to the end. |
2498 | PRINT_NOTHING: We have done some printing and we don't need any | |
2499 | further info to be printed.*/ | |
c906108c | 2500 | |
917317f4 | 2501 | enum print_stop_action |
fba45db2 | 2502 | bpstat_print (bpstat bs) |
c906108c SS |
2503 | { |
2504 | int val; | |
c5aa993b | 2505 | |
c906108c | 2506 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2507 | (Currently all watchpoints go on the bpstat whether hit or not. |
2508 | That probably could (should) be changed, provided care is taken | |
c906108c | 2509 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2510 | for (; bs; bs = bs->next) |
2511 | { | |
2512 | val = print_bp_stop_message (bs); | |
2513 | if (val == PRINT_SRC_ONLY | |
2514 | || val == PRINT_SRC_AND_LOC | |
2515 | || val == PRINT_NOTHING) | |
2516 | return val; | |
2517 | } | |
c906108c | 2518 | |
e514a9d6 JM |
2519 | /* We reached the end of the chain, or we got a null BS to start |
2520 | with and nothing was printed. */ | |
917317f4 | 2521 | return PRINT_UNKNOWN; |
c906108c SS |
2522 | } |
2523 | ||
2524 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2525 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2526 | The argument is a "struct expression *" that has been cast to char * to | |
2527 | make it pass through catch_errors. */ | |
2528 | ||
2529 | static int | |
4efb68b1 | 2530 | breakpoint_cond_eval (void *exp) |
c906108c | 2531 | { |
278cd55f | 2532 | struct value *mark = value_mark (); |
c5aa993b | 2533 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2534 | value_free_to_mark (mark); |
2535 | return i; | |
2536 | } | |
2537 | ||
2538 | /* Allocate a new bpstat and chain it to the current one. */ | |
2539 | ||
2540 | static bpstat | |
89f9893c | 2541 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2542 | { |
2543 | bpstat bs; | |
2544 | ||
2545 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2546 | cbs->next = bs; | |
4f8d1dc6 | 2547 | bs->breakpoint_at = bl; |
c906108c SS |
2548 | /* If the condition is false, etc., don't do the commands. */ |
2549 | bs->commands = NULL; | |
2550 | bs->old_val = NULL; | |
2551 | bs->print_it = print_it_normal; | |
2552 | return bs; | |
2553 | } | |
2554 | \f | |
d983da9c DJ |
2555 | /* The target has stopped with waitstatus WS. Check if any hardware |
2556 | watchpoints have triggered, according to the target. */ | |
2557 | ||
2558 | int | |
2559 | watchpoints_triggered (struct target_waitstatus *ws) | |
2560 | { | |
2561 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2562 | CORE_ADDR addr; | |
2563 | struct breakpoint *b; | |
2564 | ||
2565 | if (!stopped_by_watchpoint) | |
2566 | { | |
2567 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2568 | as not triggered. */ | |
2569 | ALL_BREAKPOINTS (b) | |
2570 | if (b->type == bp_hardware_watchpoint | |
2571 | || b->type == bp_read_watchpoint | |
2572 | || b->type == bp_access_watchpoint) | |
2573 | b->watchpoint_triggered = watch_triggered_no; | |
2574 | ||
2575 | return 0; | |
2576 | } | |
2577 | ||
2578 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2579 | { | |
2580 | /* We were stopped by a watchpoint, but we don't know where. | |
2581 | Mark all watchpoints as unknown. */ | |
2582 | ALL_BREAKPOINTS (b) | |
2583 | if (b->type == bp_hardware_watchpoint | |
2584 | || b->type == bp_read_watchpoint | |
2585 | || b->type == bp_access_watchpoint) | |
2586 | b->watchpoint_triggered = watch_triggered_unknown; | |
2587 | ||
2588 | return stopped_by_watchpoint; | |
2589 | } | |
2590 | ||
2591 | /* The target could report the data address. Mark watchpoints | |
2592 | affected by this data address as triggered, and all others as not | |
2593 | triggered. */ | |
2594 | ||
2595 | ALL_BREAKPOINTS (b) | |
2596 | if (b->type == bp_hardware_watchpoint | |
2597 | || b->type == bp_read_watchpoint | |
2598 | || b->type == bp_access_watchpoint) | |
2599 | { | |
a5606eee | 2600 | struct bp_location *loc; |
d983da9c DJ |
2601 | struct value *v; |
2602 | ||
2603 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2604 | for (loc = b->loc; loc; loc = loc->next) |
2605 | /* Exact match not required. Within range is | |
2606 | sufficient. */ | |
5009afc5 AS |
2607 | if (target_watchpoint_addr_within_range (¤t_target, |
2608 | addr, loc->address, | |
2609 | loc->length)) | |
a5606eee VP |
2610 | { |
2611 | b->watchpoint_triggered = watch_triggered_yes; | |
2612 | break; | |
2613 | } | |
d983da9c DJ |
2614 | } |
2615 | ||
2616 | return 1; | |
2617 | } | |
2618 | ||
c906108c SS |
2619 | /* Possible return values for watchpoint_check (this can't be an enum |
2620 | because of check_errors). */ | |
2621 | /* The watchpoint has been deleted. */ | |
2622 | #define WP_DELETED 1 | |
2623 | /* The value has changed. */ | |
2624 | #define WP_VALUE_CHANGED 2 | |
2625 | /* The value has not changed. */ | |
2626 | #define WP_VALUE_NOT_CHANGED 3 | |
2627 | ||
2628 | #define BP_TEMPFLAG 1 | |
2629 | #define BP_HARDWAREFLAG 2 | |
2630 | ||
2631 | /* Check watchpoint condition. */ | |
2632 | ||
2633 | static int | |
4efb68b1 | 2634 | watchpoint_check (void *p) |
c906108c SS |
2635 | { |
2636 | bpstat bs = (bpstat) p; | |
2637 | struct breakpoint *b; | |
2638 | struct frame_info *fr; | |
2639 | int within_current_scope; | |
2640 | ||
4f8d1dc6 | 2641 | b = bs->breakpoint_at->owner; |
c906108c SS |
2642 | |
2643 | if (b->exp_valid_block == NULL) | |
2644 | within_current_scope = 1; | |
2645 | else | |
2646 | { | |
2647 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2648 | any chance of handling watchpoints on local variables, we'll need |
2649 | the frame chain (so we can determine if we're in scope). */ | |
2650 | reinit_frame_cache (); | |
101dcfbe | 2651 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2652 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2653 | |
2654 | /* If we've gotten confused in the unwinder, we might have | |
2655 | returned a frame that can't describe this variable. */ | |
2656 | if (within_current_scope | |
2657 | && block_function (b->exp_valid_block) != get_frame_function (fr)) | |
2658 | within_current_scope = 0; | |
2659 | ||
c12260ac CV |
2660 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2661 | in the function but the stack frame has already been invalidated. | |
2662 | Since we can't rely on the values of local variables after the | |
2663 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2664 | state as `not changed' without further checking. |
2665 | ||
2666 | vinschen/2003-09-04: The former implementation left out the case | |
2667 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2668 | because the current PC is currently in an epilogue. Calling | |
2669 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2670 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2671 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2672 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2673 | if (fr && within_current_scope) |
c906108c SS |
2674 | /* If we end up stopping, the current frame will get selected |
2675 | in normal_stop. So this call to select_frame won't affect | |
2676 | the user. */ | |
0f7d239c | 2677 | select_frame (fr); |
c906108c | 2678 | } |
c5aa993b | 2679 | |
c906108c SS |
2680 | if (within_current_scope) |
2681 | { | |
2682 | /* We use value_{,free_to_}mark because it could be a | |
2683 | *long* time before we return to the command level and | |
c5aa993b JM |
2684 | call free_all_values. We can't call free_all_values because |
2685 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2686 | |
278cd55f | 2687 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2688 | struct value *new_val; |
2689 | ||
2690 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2691 | if ((b->val != NULL) != (new_val != NULL) | |
2692 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2693 | { |
fa4727a6 DJ |
2694 | if (new_val != NULL) |
2695 | { | |
2696 | release_value (new_val); | |
2697 | value_free_to_mark (mark); | |
2698 | } | |
c906108c SS |
2699 | bs->old_val = b->val; |
2700 | b->val = new_val; | |
fa4727a6 | 2701 | b->val_valid = 1; |
c906108c SS |
2702 | /* We will stop here */ |
2703 | return WP_VALUE_CHANGED; | |
2704 | } | |
2705 | else | |
2706 | { | |
2707 | /* Nothing changed, don't do anything. */ | |
2708 | value_free_to_mark (mark); | |
2709 | /* We won't stop here */ | |
2710 | return WP_VALUE_NOT_CHANGED; | |
2711 | } | |
2712 | } | |
2713 | else | |
2714 | { | |
2715 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2716 | if we temporarily ignored the watchpoint, then when |
2717 | we reenter the block in which it is valid it contains | |
2718 | garbage (in the case of a function, it may have two | |
2719 | garbage values, one before and one after the prologue). | |
2720 | So we can't even detect the first assignment to it and | |
2721 | watch after that (since the garbage may or may not equal | |
2722 | the first value assigned). */ | |
4ce44c66 JM |
2723 | /* We print all the stop information in print_it_typical(), but |
2724 | in this case, by the time we call print_it_typical() this bp | |
2725 | will be deleted already. So we have no choice but print the | |
2726 | information here. */ | |
9dc5e2a9 | 2727 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2728 | ui_out_field_string |
2729 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2730 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2731 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2732 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2733 | which its expression is valid.\n"); | |
4ce44c66 | 2734 | |
c906108c | 2735 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2736 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2737 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2738 | |
2739 | return WP_DELETED; | |
2740 | } | |
2741 | } | |
2742 | ||
18a18393 VP |
2743 | /* Return true if it looks like target has stopped due to hitting |
2744 | breakpoint location BL. This function does not check if we | |
2745 | should stop, only if BL explains the stop. */ | |
2746 | static int | |
2747 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2748 | { | |
2749 | struct breakpoint *b = bl->owner; | |
2750 | ||
2751 | if (b->type != bp_watchpoint | |
2752 | && b->type != bp_hardware_watchpoint | |
2753 | && b->type != bp_read_watchpoint | |
2754 | && b->type != bp_access_watchpoint | |
2755 | && b->type != bp_hardware_breakpoint | |
2756 | && b->type != bp_catch_fork | |
2757 | && b->type != bp_catch_vfork | |
2758 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2759 | { | |
2760 | if (bl->address != bp_addr) /* address doesn't match */ | |
2761 | return 0; | |
2762 | if (overlay_debugging /* unmapped overlay section */ | |
2763 | && section_is_overlay (bl->section) | |
2764 | && !section_is_mapped (bl->section)) | |
2765 | return 0; | |
2766 | } | |
2767 | ||
2768 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2769 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2770 | some data address). Otherwise gdb won't stop on a break instruction | |
2771 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2772 | been defined. Also skip watchpoints which we know did not trigger | |
2773 | (did not match the data address). */ | |
2774 | ||
2775 | if ((b->type == bp_hardware_watchpoint | |
2776 | || b->type == bp_read_watchpoint | |
2777 | || b->type == bp_access_watchpoint) | |
2778 | && b->watchpoint_triggered == watch_triggered_no) | |
2779 | return 0; | |
2780 | ||
2781 | if (b->type == bp_hardware_breakpoint) | |
2782 | { | |
2783 | if (bl->address != bp_addr) | |
2784 | return 0; | |
2785 | if (overlay_debugging /* unmapped overlay section */ | |
2786 | && section_is_overlay (bl->section) | |
2787 | && !section_is_mapped (bl->section)) | |
2788 | return 0; | |
2789 | } | |
2790 | ||
2791 | /* Is this a catchpoint of a load or unload? If so, did we | |
2792 | get a load or unload of the specified library? If not, | |
2793 | ignore it. */ | |
2794 | if ((b->type == bp_catch_load) | |
2795 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2796 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2797 | || ((b->dll_pathname != NULL) | |
2798 | && (strcmp (b->dll_pathname, | |
2799 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2800 | PIDGET (inferior_ptid))) | |
2801 | != 0))) | |
2802 | #endif | |
2803 | ) | |
2804 | return 0; | |
2805 | ||
2806 | if ((b->type == bp_catch_unload) | |
2807 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2808 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2809 | || ((b->dll_pathname != NULL) | |
2810 | && (strcmp (b->dll_pathname, | |
2811 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2812 | PIDGET (inferior_ptid))) | |
2813 | != 0))) | |
2814 | #endif | |
2815 | ) | |
2816 | return 0; | |
2817 | ||
2818 | if ((b->type == bp_catch_fork) | |
3a3e9ee3 | 2819 | && !inferior_has_forked (inferior_ptid, |
18a18393 VP |
2820 | &b->forked_inferior_pid)) |
2821 | return 0; | |
2822 | ||
2823 | if ((b->type == bp_catch_vfork) | |
3a3e9ee3 | 2824 | && !inferior_has_vforked (inferior_ptid, |
18a18393 VP |
2825 | &b->forked_inferior_pid)) |
2826 | return 0; | |
2827 | ||
2828 | if ((b->type == bp_catch_exec) | |
3a3e9ee3 | 2829 | && !inferior_has_execd (inferior_ptid, &b->exec_pathname)) |
18a18393 VP |
2830 | return 0; |
2831 | ||
2832 | return 1; | |
2833 | } | |
2834 | ||
2835 | /* If BS refers to a watchpoint, determine if the watched values | |
2836 | has actually changed, and we should stop. If not, set BS->stop | |
2837 | to 0. */ | |
2838 | static void | |
2839 | bpstat_check_watchpoint (bpstat bs) | |
2840 | { | |
2841 | const struct bp_location *bl = bs->breakpoint_at; | |
2842 | struct breakpoint *b = bl->owner; | |
2843 | ||
2844 | if (b->type == bp_watchpoint | |
2845 | || b->type == bp_read_watchpoint | |
2846 | || b->type == bp_access_watchpoint | |
2847 | || b->type == bp_hardware_watchpoint) | |
2848 | { | |
2849 | CORE_ADDR addr; | |
2850 | struct value *v; | |
2851 | int must_check_value = 0; | |
2852 | ||
2853 | if (b->type == bp_watchpoint) | |
2854 | /* For a software watchpoint, we must always check the | |
2855 | watched value. */ | |
2856 | must_check_value = 1; | |
2857 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2858 | /* We have a hardware watchpoint (read, write, or access) | |
2859 | and the target earlier reported an address watched by | |
2860 | this watchpoint. */ | |
2861 | must_check_value = 1; | |
2862 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2863 | && b->type == bp_hardware_watchpoint) | |
2864 | /* We were stopped by a hardware watchpoint, but the target could | |
2865 | not report the data address. We must check the watchpoint's | |
2866 | value. Access and read watchpoints are out of luck; without | |
2867 | a data address, we can't figure it out. */ | |
2868 | must_check_value = 1; | |
2869 | ||
2870 | if (must_check_value) | |
2871 | { | |
2872 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2873 | b->number); | |
2874 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2875 | int e = catch_errors (watchpoint_check, bs, message, | |
2876 | RETURN_MASK_ALL); | |
2877 | do_cleanups (cleanups); | |
2878 | switch (e) | |
2879 | { | |
2880 | case WP_DELETED: | |
2881 | /* We've already printed what needs to be printed. */ | |
2882 | bs->print_it = print_it_done; | |
2883 | /* Stop. */ | |
2884 | break; | |
2885 | case WP_VALUE_CHANGED: | |
2886 | if (b->type == bp_read_watchpoint) | |
2887 | { | |
2888 | /* Don't stop: read watchpoints shouldn't fire if | |
2889 | the value has changed. This is for targets | |
2890 | which cannot set read-only watchpoints. */ | |
2891 | bs->print_it = print_it_noop; | |
2892 | bs->stop = 0; | |
2893 | } | |
2894 | break; | |
2895 | case WP_VALUE_NOT_CHANGED: | |
2896 | if (b->type == bp_hardware_watchpoint | |
2897 | || b->type == bp_watchpoint) | |
2898 | { | |
2899 | /* Don't stop: write watchpoints shouldn't fire if | |
2900 | the value hasn't changed. */ | |
2901 | bs->print_it = print_it_noop; | |
2902 | bs->stop = 0; | |
2903 | } | |
2904 | /* Stop. */ | |
2905 | break; | |
2906 | default: | |
2907 | /* Can't happen. */ | |
2908 | case 0: | |
2909 | /* Error from catch_errors. */ | |
2910 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2911 | if (b->related_breakpoint) | |
2912 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2913 | b->disposition = disp_del_at_next_stop; | |
2914 | /* We've already printed what needs to be printed. */ | |
2915 | bs->print_it = print_it_done; | |
2916 | break; | |
2917 | } | |
2918 | } | |
2919 | else /* must_check_value == 0 */ | |
2920 | { | |
2921 | /* This is a case where some watchpoint(s) triggered, but | |
2922 | not at the address of this watchpoint, or else no | |
2923 | watchpoint triggered after all. So don't print | |
2924 | anything for this watchpoint. */ | |
2925 | bs->print_it = print_it_noop; | |
2926 | bs->stop = 0; | |
2927 | } | |
2928 | } | |
2929 | } | |
2930 | ||
2931 | ||
2932 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2933 | of breakpoint referred to by BS. If we should not stop for this | |
2934 | breakpoint, set BS->stop to 0. */ | |
2935 | static void | |
2936 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2937 | { | |
2938 | int thread_id = pid_to_thread_id (ptid); | |
2939 | const struct bp_location *bl = bs->breakpoint_at; | |
2940 | struct breakpoint *b = bl->owner; | |
2941 | ||
2942 | if (frame_id_p (b->frame_id) | |
2943 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2944 | bs->stop = 0; | |
2945 | else if (bs->stop) | |
2946 | { | |
2947 | int value_is_zero = 0; | |
2948 | ||
2949 | /* If this is a scope breakpoint, mark the associated | |
2950 | watchpoint as triggered so that we will handle the | |
2951 | out-of-scope event. We'll get to the watchpoint next | |
2952 | iteration. */ | |
2953 | if (b->type == bp_watchpoint_scope) | |
2954 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2955 | ||
2956 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2957 | { | |
2958 | /* Need to select the frame, with all that implies | |
2959 | so that the conditions will have the right context. */ | |
2960 | select_frame (get_current_frame ()); | |
2961 | value_is_zero | |
2962 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2963 | "Error in testing breakpoint condition:\n", | |
2964 | RETURN_MASK_ALL); | |
2965 | /* FIXME-someday, should give breakpoint # */ | |
2966 | free_all_values (); | |
2967 | } | |
2968 | if (bl->cond && value_is_zero) | |
2969 | { | |
2970 | bs->stop = 0; | |
2971 | } | |
2972 | else if (b->thread != -1 && b->thread != thread_id) | |
2973 | { | |
2974 | bs->stop = 0; | |
2975 | } | |
2976 | else if (b->ignore_count > 0) | |
2977 | { | |
2978 | b->ignore_count--; | |
2979 | annotate_ignore_count_change (); | |
2980 | bs->stop = 0; | |
2981 | /* Increase the hit count even though we don't | |
2982 | stop. */ | |
2983 | ++(b->hit_count); | |
2984 | } | |
2985 | } | |
2986 | } | |
2987 | ||
2988 | ||
9709f61c | 2989 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2990 | BP_ADDR in thread PTID. |
c906108c | 2991 | |
d983da9c | 2992 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2993 | don't understand this stop. Result is a chain of bpstat's such that: |
2994 | ||
c5aa993b | 2995 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2996 | |
c5aa993b | 2997 | if we understand why we stopped, the result is not null. |
c906108c | 2998 | |
c5aa993b JM |
2999 | Each element of the chain refers to a particular breakpoint or |
3000 | watchpoint at which we have stopped. (We may have stopped for | |
3001 | several reasons concurrently.) | |
c906108c | 3002 | |
c5aa993b JM |
3003 | Each element of the chain has valid next, breakpoint_at, |
3004 | commands, FIXME??? fields. */ | |
c906108c SS |
3005 | |
3006 | bpstat | |
d983da9c | 3007 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3008 | { |
0d381245 | 3009 | struct breakpoint *b = NULL; |
89f9893c | 3010 | const struct bp_location *bl; |
20874c92 | 3011 | struct bp_location *loc; |
c906108c SS |
3012 | /* Root of the chain of bpstat's */ |
3013 | struct bpstats root_bs[1]; | |
3014 | /* Pointer to the last thing in the chain currently. */ | |
3015 | bpstat bs = root_bs; | |
20874c92 | 3016 | int ix; |
c906108c | 3017 | |
0d381245 | 3018 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3019 | { |
0d381245 VP |
3020 | b = bl->owner; |
3021 | gdb_assert (b); | |
468d015d | 3022 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3023 | continue; |
3024 | ||
a5606eee VP |
3025 | /* For hardware watchpoints, we look only at the first location. |
3026 | The watchpoint_check function will work on entire expression, | |
3027 | not the individual locations. For read watchopints, the | |
3028 | watchpoints_triggered function have checked all locations | |
3029 | alrea | |
3030 | */ | |
3031 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3032 | continue; | |
3033 | ||
18a18393 VP |
3034 | if (!bpstat_check_location (bl, bp_addr)) |
3035 | continue; | |
3036 | ||
c5aa993b JM |
3037 | /* Come here if it's a watchpoint, or if the break address matches */ |
3038 | ||
0d381245 | 3039 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3040 | |
18a18393 VP |
3041 | /* Assume we stop. Should we find watchpoint that is not actually |
3042 | triggered, or if condition of breakpoint is false, we'll reset | |
3043 | 'stop' to 0. */ | |
c5aa993b JM |
3044 | bs->stop = 1; |
3045 | bs->print = 1; | |
3046 | ||
18a18393 VP |
3047 | bpstat_check_watchpoint (bs); |
3048 | if (!bs->stop) | |
3049 | continue; | |
c5aa993b | 3050 | |
18a18393 VP |
3051 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3052 | /* We do not stop for these. */ | |
c5aa993b JM |
3053 | bs->stop = 0; |
3054 | else | |
18a18393 VP |
3055 | bpstat_check_breakpoint_conditions (bs, ptid); |
3056 | ||
3057 | if (bs->stop) | |
c5aa993b | 3058 | { |
18a18393 | 3059 | ++(b->hit_count); |
d983da9c | 3060 | |
18a18393 VP |
3061 | /* We will stop here */ |
3062 | if (b->disposition == disp_disable) | |
c5aa993b | 3063 | { |
18a18393 | 3064 | b->enable_state = bp_disabled; |
b60e7edf | 3065 | update_global_location_list (0); |
c5aa993b | 3066 | } |
18a18393 VP |
3067 | if (b->silent) |
3068 | bs->print = 0; | |
3069 | bs->commands = b->commands; | |
3070 | if (bs->commands && | |
3071 | (strcmp ("silent", bs->commands->line) == 0 | |
3072 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3073 | { |
18a18393 VP |
3074 | bs->commands = bs->commands->next; |
3075 | bs->print = 0; | |
c5aa993b | 3076 | } |
18a18393 | 3077 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3078 | } |
18a18393 | 3079 | |
c5aa993b JM |
3080 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3081 | if (bs->stop == 0 || bs->print == 0) | |
3082 | bs->print_it = print_it_noop; | |
3083 | } | |
c906108c | 3084 | |
20874c92 VP |
3085 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3086 | { | |
3087 | if (loc->address == bp_addr) | |
3088 | { | |
3089 | bs = bpstat_alloc (loc, bs); | |
3090 | /* For hits of moribund locations, we should just proceed. */ | |
3091 | bs->stop = 0; | |
3092 | bs->print = 0; | |
3093 | bs->print_it = print_it_noop; | |
3094 | } | |
3095 | } | |
3096 | ||
c906108c SS |
3097 | bs->next = NULL; /* Terminate the chain */ |
3098 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3099 | ||
d983da9c DJ |
3100 | /* If we aren't stopping, the value of some hardware watchpoint may |
3101 | not have changed, but the intermediate memory locations we are | |
3102 | watching may have. Don't bother if we're stopping; this will get | |
3103 | done later. */ | |
3104 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3105 | if (bs->stop) | |
3106 | break; | |
3107 | ||
3108 | if (bs == NULL) | |
3109 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3110 | if (!bs->stop | |
20874c92 | 3111 | && bs->breakpoint_at->owner |
d983da9c DJ |
3112 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3113 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3114 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3115 | { | |
a5606eee VP |
3116 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3117 | location is no longer used by the watchpoint. Prevent | |
3118 | further code from trying to use it. */ | |
3119 | bs->breakpoint_at = NULL; | |
d983da9c DJ |
3120 | remove_breakpoints (); |
3121 | insert_breakpoints (); | |
3122 | break; | |
3123 | } | |
3124 | ||
3125 | return root_bs->next; | |
c906108c SS |
3126 | } |
3127 | \f | |
3128 | /* Tell what to do about this bpstat. */ | |
3129 | struct bpstat_what | |
fba45db2 | 3130 | bpstat_what (bpstat bs) |
c906108c SS |
3131 | { |
3132 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3133 | enum class |
3134 | { | |
3135 | /* This bpstat element has no effect on the main_action. */ | |
3136 | no_effect = 0, | |
3137 | ||
3138 | /* There was a watchpoint, stop but don't print. */ | |
3139 | wp_silent, | |
c906108c | 3140 | |
c5aa993b JM |
3141 | /* There was a watchpoint, stop and print. */ |
3142 | wp_noisy, | |
c906108c | 3143 | |
c5aa993b JM |
3144 | /* There was a breakpoint but we're not stopping. */ |
3145 | bp_nostop, | |
c906108c | 3146 | |
c5aa993b JM |
3147 | /* There was a breakpoint, stop but don't print. */ |
3148 | bp_silent, | |
c906108c | 3149 | |
c5aa993b JM |
3150 | /* There was a breakpoint, stop and print. */ |
3151 | bp_noisy, | |
c906108c | 3152 | |
c5aa993b JM |
3153 | /* We hit the longjmp breakpoint. */ |
3154 | long_jump, | |
c906108c | 3155 | |
c5aa993b JM |
3156 | /* We hit the longjmp_resume breakpoint. */ |
3157 | long_resume, | |
c906108c | 3158 | |
c5aa993b JM |
3159 | /* We hit the step_resume breakpoint. */ |
3160 | step_resume, | |
c906108c | 3161 | |
c5aa993b JM |
3162 | /* We hit the shared library event breakpoint. */ |
3163 | shlib_event, | |
c906108c | 3164 | |
c5aa993b JM |
3165 | /* We caught a shared library event. */ |
3166 | catch_shlib_event, | |
c906108c | 3167 | |
c5aa993b JM |
3168 | /* This is just used to count how many enums there are. */ |
3169 | class_last | |
c906108c SS |
3170 | }; |
3171 | ||
3172 | /* Here is the table which drives this routine. So that we can | |
3173 | format it pretty, we define some abbreviations for the | |
3174 | enum bpstat_what codes. */ | |
3175 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3176 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3177 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3178 | #define sgl BPSTAT_WHAT_SINGLE | |
3179 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3180 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3181 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3182 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3183 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3184 | ||
3185 | /* "Can't happen." Might want to print an error message. | |
3186 | abort() is not out of the question, but chances are GDB is just | |
3187 | a bit confused, not unusable. */ | |
3188 | #define err BPSTAT_WHAT_STOP_NOISY | |
3189 | ||
3190 | /* Given an old action and a class, come up with a new action. */ | |
3191 | /* One interesting property of this table is that wp_silent is the same | |
3192 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3193 | after stopping, the check for whether to step over a breakpoint | |
3194 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3195 | reference to how we stopped. We retain separate wp_silent and |
3196 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3197 | |
3198 | Another possibly interesting property of this table is that | |
3199 | there's a partial ordering, priority-like, of the actions. Once | |
3200 | you've decided that some action is appropriate, you'll never go | |
3201 | back and decide something of a lower priority is better. The | |
3202 | ordering is: | |
3203 | ||
4d5b2cd7 | 3204 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3205 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3206 | slr < err shl shlr sn sr ss |
78b6a731 | 3207 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3208 | ss < shl shlr sn sr |
3209 | sn < shl shlr sr | |
46d57086 DJ |
3210 | shl < shlr sr |
3211 | shlr < sr | |
4d5b2cd7 | 3212 | sr < |
c5aa993b | 3213 | |
43ff13b4 JM |
3214 | What I think this means is that we don't need a damned table |
3215 | here. If you just put the rows and columns in the right order, | |
3216 | it'd look awfully regular. We could simply walk the bpstat list | |
3217 | and choose the highest priority action we find, with a little | |
78b6a731 | 3218 | logic to handle the 'err' cases. */ |
c906108c SS |
3219 | |
3220 | /* step_resume entries: a step resume breakpoint overrides another | |
3221 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3222 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3223 | |
3224 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3225 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3226 | { | |
3227 | /* old action */ | |
78b6a731 | 3228 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3229 | */ |
3230 | /*no_effect */ | |
78b6a731 | 3231 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3232 | /*wp_silent */ |
78b6a731 | 3233 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3234 | /*wp_noisy */ |
78b6a731 | 3235 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3236 | /*bp_nostop */ |
78b6a731 | 3237 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3238 | /*bp_silent */ |
78b6a731 | 3239 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3240 | /*bp_noisy */ |
78b6a731 | 3241 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3242 | /*long_jump */ |
78b6a731 | 3243 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3244 | /*long_resume */ |
78b6a731 | 3245 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3246 | /*step_resume */ |
78b6a731 | 3247 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3248 | /*shlib */ |
78b6a731 | 3249 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3250 | /*catch_shlib */ |
78b6a731 | 3251 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3252 | }; |
c906108c SS |
3253 | |
3254 | #undef kc | |
3255 | #undef ss | |
3256 | #undef sn | |
3257 | #undef sgl | |
3258 | #undef slr | |
3259 | #undef clr | |
c906108c SS |
3260 | #undef err |
3261 | #undef sr | |
3262 | #undef ts | |
3263 | #undef shl | |
3264 | #undef shlr | |
3265 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3266 | struct bpstat_what retval; | |
3267 | ||
3268 | retval.call_dummy = 0; | |
3269 | for (; bs != NULL; bs = bs->next) | |
3270 | { | |
3271 | enum class bs_class = no_effect; | |
3272 | if (bs->breakpoint_at == NULL) | |
3273 | /* I suspect this can happen if it was a momentary breakpoint | |
3274 | which has since been deleted. */ | |
3275 | continue; | |
20874c92 VP |
3276 | if (bs->breakpoint_at->owner == NULL) |
3277 | bs_class = bp_nostop; | |
3278 | else | |
4f8d1dc6 | 3279 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3280 | { |
3281 | case bp_none: | |
3282 | continue; | |
3283 | ||
3284 | case bp_breakpoint: | |
3285 | case bp_hardware_breakpoint: | |
3286 | case bp_until: | |
3287 | case bp_finish: | |
3288 | if (bs->stop) | |
3289 | { | |
3290 | if (bs->print) | |
3291 | bs_class = bp_noisy; | |
3292 | else | |
3293 | bs_class = bp_silent; | |
3294 | } | |
3295 | else | |
3296 | bs_class = bp_nostop; | |
3297 | break; | |
3298 | case bp_watchpoint: | |
3299 | case bp_hardware_watchpoint: | |
3300 | case bp_read_watchpoint: | |
3301 | case bp_access_watchpoint: | |
3302 | if (bs->stop) | |
3303 | { | |
3304 | if (bs->print) | |
3305 | bs_class = wp_noisy; | |
3306 | else | |
3307 | bs_class = wp_silent; | |
3308 | } | |
3309 | else | |
53a5351d JM |
3310 | /* There was a watchpoint, but we're not stopping. |
3311 | This requires no further action. */ | |
c906108c SS |
3312 | bs_class = no_effect; |
3313 | break; | |
3314 | case bp_longjmp: | |
3315 | bs_class = long_jump; | |
3316 | break; | |
3317 | case bp_longjmp_resume: | |
3318 | bs_class = long_resume; | |
3319 | break; | |
3320 | case bp_step_resume: | |
3321 | if (bs->stop) | |
3322 | { | |
3323 | bs_class = step_resume; | |
3324 | } | |
3325 | else | |
3326 | /* It is for the wrong frame. */ | |
3327 | bs_class = bp_nostop; | |
3328 | break; | |
c906108c SS |
3329 | case bp_watchpoint_scope: |
3330 | bs_class = bp_nostop; | |
3331 | break; | |
c5aa993b JM |
3332 | case bp_shlib_event: |
3333 | bs_class = shlib_event; | |
3334 | break; | |
c4093a6a | 3335 | case bp_thread_event: |
1900040c | 3336 | case bp_overlay_event: |
c4093a6a JM |
3337 | bs_class = bp_nostop; |
3338 | break; | |
c5aa993b JM |
3339 | case bp_catch_load: |
3340 | case bp_catch_unload: | |
3341 | /* Only if this catchpoint triggered should we cause the | |
3342 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3343 | catchpoint. */ | |
3344 | if (bs->stop) | |
3345 | bs_class = catch_shlib_event; | |
3346 | else | |
3347 | bs_class = no_effect; | |
3348 | break; | |
3349 | case bp_catch_fork: | |
3350 | case bp_catch_vfork: | |
3351 | case bp_catch_exec: | |
3352 | if (bs->stop) | |
3353 | { | |
3354 | if (bs->print) | |
3355 | bs_class = bp_noisy; | |
3356 | else | |
3357 | bs_class = bp_silent; | |
3358 | } | |
3359 | else | |
53a5351d JM |
3360 | /* There was a catchpoint, but we're not stopping. |
3361 | This requires no further action. */ | |
c5aa993b JM |
3362 | bs_class = no_effect; |
3363 | break; | |
c906108c | 3364 | case bp_call_dummy: |
53a5351d JM |
3365 | /* Make sure the action is stop (silent or noisy), |
3366 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3367 | bs_class = bp_silent; |
3368 | retval.call_dummy = 1; | |
3369 | break; | |
3370 | } | |
c5aa993b | 3371 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3372 | } |
3373 | retval.main_action = current_action; | |
3374 | return retval; | |
3375 | } | |
3376 | ||
3377 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3378 | without hardware support). This isn't related to a specific bpstat, | |
3379 | just to things like whether watchpoints are set. */ | |
3380 | ||
c5aa993b | 3381 | int |
fba45db2 | 3382 | bpstat_should_step (void) |
c906108c SS |
3383 | { |
3384 | struct breakpoint *b; | |
3385 | ALL_BREAKPOINTS (b) | |
468d015d | 3386 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3387 | return 1; |
c906108c SS |
3388 | return 0; |
3389 | } | |
3390 | ||
c906108c | 3391 | \f |
c5aa993b | 3392 | |
c906108c SS |
3393 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3394 | function returns another bpstat which contains only the catchpoints | |
3395 | on that first list, if any. */ | |
3396 | void | |
fba45db2 | 3397 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3398 | { |
3399 | struct bpstats root_bs[1]; | |
3400 | bpstat bs = root_bs; | |
3401 | struct breakpoint *ep; | |
3402 | char *dll_pathname; | |
3403 | ||
c906108c SS |
3404 | bpstat_clear (cp_list); |
3405 | root_bs->next = NULL; | |
c5aa993b JM |
3406 | |
3407 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3408 | { |
3409 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3410 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3411 | if (ep == NULL) |
c5aa993b JM |
3412 | break; |
3413 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3414 | (ep->type != bp_catch_unload)) |
53a5351d | 3415 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3416 | continue; |
3417 | ||
c906108c | 3418 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3419 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3420 | *bs = *ep_list; |
3421 | bs->next = NULL; | |
3422 | bs = root_bs->next; | |
c5aa993b | 3423 | |
c906108c SS |
3424 | #if defined(SOLIB_ADD) |
3425 | /* Also, for each triggered catchpoint, tag it with the name of | |
3426 | the library that caused this trigger. (We copy the name now, | |
3427 | because it's only guaranteed to be available NOW, when the | |
3428 | catchpoint triggers. Clients who may wish to know the name | |
3429 | later must get it from the catchpoint itself.) */ | |
3430 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3431 | xfree (ep->triggered_dll_pathname); |
c906108c | 3432 | if (ep->type == bp_catch_load) |
39f77062 KB |
3433 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3434 | PIDGET (inferior_ptid)); | |
c906108c | 3435 | else |
39f77062 KB |
3436 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3437 | PIDGET (inferior_ptid)); | |
c906108c SS |
3438 | #else |
3439 | dll_pathname = NULL; | |
3440 | #endif | |
3441 | if (dll_pathname) | |
3442 | { | |
53a5351d JM |
3443 | ep->triggered_dll_pathname = (char *) |
3444 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3445 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3446 | } | |
3447 | else | |
3448 | ep->triggered_dll_pathname = NULL; | |
3449 | } | |
c5aa993b | 3450 | |
c906108c SS |
3451 | *cp_list = bs; |
3452 | } | |
3453 | ||
0d381245 VP |
3454 | static void print_breakpoint_location (struct breakpoint *b, |
3455 | struct bp_location *loc, | |
3456 | char *wrap_indent, | |
3457 | struct ui_stream *stb) | |
3458 | { | |
3459 | if (b->source_file) | |
3460 | { | |
3461 | struct symbol *sym | |
3462 | = find_pc_sect_function (loc->address, loc->section); | |
3463 | if (sym) | |
3464 | { | |
3465 | ui_out_text (uiout, "in "); | |
3466 | ui_out_field_string (uiout, "func", | |
3467 | SYMBOL_PRINT_NAME (sym)); | |
3468 | ui_out_wrap_hint (uiout, wrap_indent); | |
3469 | ui_out_text (uiout, " at "); | |
3470 | } | |
3471 | ui_out_field_string (uiout, "file", b->source_file); | |
3472 | ui_out_text (uiout, ":"); | |
3473 | ||
3474 | if (ui_out_is_mi_like_p (uiout)) | |
3475 | { | |
3476 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3477 | char *fullname = symtab_to_fullname (sal.symtab); | |
3478 | ||
3479 | if (fullname) | |
3480 | ui_out_field_string (uiout, "fullname", fullname); | |
3481 | } | |
3482 | ||
3483 | ui_out_field_int (uiout, "line", b->line_number); | |
3484 | } | |
3485 | else if (!b->loc) | |
3486 | { | |
3487 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3488 | } | |
3489 | else | |
3490 | { | |
3491 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3492 | ui_out_field_stream (uiout, "at", stb); | |
3493 | } | |
3494 | } | |
3495 | ||
c4093a6a | 3496 | /* Print B to gdb_stdout. */ |
c906108c | 3497 | static void |
0d381245 VP |
3498 | print_one_breakpoint_location (struct breakpoint *b, |
3499 | struct bp_location *loc, | |
3500 | int loc_number, | |
3501 | CORE_ADDR *last_addr) | |
c906108c | 3502 | { |
52f0bd74 AC |
3503 | struct command_line *l; |
3504 | struct symbol *sym; | |
c4093a6a JM |
3505 | struct ep_type_description |
3506 | { | |
3507 | enum bptype type; | |
3508 | char *description; | |
3509 | }; | |
3510 | static struct ep_type_description bptypes[] = | |
c906108c | 3511 | { |
c5aa993b JM |
3512 | {bp_none, "?deleted?"}, |
3513 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3514 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3515 | {bp_until, "until"}, |
3516 | {bp_finish, "finish"}, | |
3517 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3518 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3519 | {bp_read_watchpoint, "read watchpoint"}, |
3520 | {bp_access_watchpoint, "acc watchpoint"}, | |
3521 | {bp_longjmp, "longjmp"}, | |
3522 | {bp_longjmp_resume, "longjmp resume"}, | |
3523 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3524 | {bp_watchpoint_scope, "watchpoint scope"}, |
3525 | {bp_call_dummy, "call dummy"}, | |
3526 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3527 | {bp_thread_event, "thread events"}, |
1900040c | 3528 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3529 | {bp_catch_load, "catch load"}, |
3530 | {bp_catch_unload, "catch unload"}, | |
3531 | {bp_catch_fork, "catch fork"}, | |
3532 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3533 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3534 | }; |
c4093a6a | 3535 | |
c2c6d25f | 3536 | static char bpenables[] = "nynny"; |
c906108c | 3537 | char wrap_indent[80]; |
8b93c638 JM |
3538 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3539 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3540 | struct cleanup *bkpt_chain; |
c906108c | 3541 | |
0d381245 VP |
3542 | int header_of_multiple = 0; |
3543 | int part_of_multiple = (loc != NULL); | |
3544 | ||
3545 | gdb_assert (!loc || loc_number != 0); | |
3546 | /* See comment in print_one_breakpoint concerning | |
3547 | treatment of breakpoints with single disabled | |
3548 | location. */ | |
3549 | if (loc == NULL | |
3550 | && (b->loc != NULL | |
3551 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3552 | header_of_multiple = 1; | |
3553 | if (loc == NULL) | |
3554 | loc = b->loc; | |
3555 | ||
c4093a6a | 3556 | annotate_record (); |
3b31d625 | 3557 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3558 | |
3559 | /* 1 */ | |
3560 | annotate_field (0); | |
0d381245 VP |
3561 | if (part_of_multiple) |
3562 | { | |
3563 | char *formatted; | |
0c6773c1 | 3564 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3565 | ui_out_field_string (uiout, "number", formatted); |
3566 | xfree (formatted); | |
3567 | } | |
3568 | else | |
3569 | { | |
3570 | ui_out_field_int (uiout, "number", b->number); | |
3571 | } | |
c4093a6a JM |
3572 | |
3573 | /* 2 */ | |
3574 | annotate_field (1); | |
0d381245 VP |
3575 | if (part_of_multiple) |
3576 | ui_out_field_skip (uiout, "type"); | |
3577 | else | |
3578 | { | |
3579 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3580 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3581 | internal_error (__FILE__, __LINE__, | |
3582 | _("bptypes table does not describe type #%d."), | |
3583 | (int) b->type); | |
3584 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3585 | } | |
c4093a6a JM |
3586 | |
3587 | /* 3 */ | |
3588 | annotate_field (2); | |
0d381245 VP |
3589 | if (part_of_multiple) |
3590 | ui_out_field_skip (uiout, "disp"); | |
3591 | else | |
2cec12e5 | 3592 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3593 | |
c4093a6a JM |
3594 | |
3595 | /* 4 */ | |
3596 | annotate_field (3); | |
0d381245 | 3597 | if (part_of_multiple) |
54e52265 | 3598 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3599 | else |
54e52265 VP |
3600 | ui_out_field_fmt (uiout, "enabled", "%c", |
3601 | bpenables[(int) b->enable_state]); | |
3602 | ui_out_spaces (uiout, 2); | |
0d381245 | 3603 | |
c4093a6a JM |
3604 | |
3605 | /* 5 and 6 */ | |
3606 | strcpy (wrap_indent, " "); | |
3607 | if (addressprint) | |
75ac9d7b | 3608 | { |
17a912b6 | 3609 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3610 | strcat (wrap_indent, " "); |
3611 | else | |
3612 | strcat (wrap_indent, " "); | |
3613 | } | |
c906108c | 3614 | |
3086aeae | 3615 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3616 | { |
3617 | /* Although the print_one can possibly print | |
3618 | all locations, calling it here is not likely | |
3619 | to get any nice result. So, make sure there's | |
3620 | just one location. */ | |
3621 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3622 | b->ops->print_one (b, last_addr); | |
3623 | } | |
3086aeae DJ |
3624 | else |
3625 | switch (b->type) | |
3626 | { | |
3627 | case bp_none: | |
3628 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3629 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3630 | break; |
c906108c | 3631 | |
3086aeae DJ |
3632 | case bp_watchpoint: |
3633 | case bp_hardware_watchpoint: | |
3634 | case bp_read_watchpoint: | |
3635 | case bp_access_watchpoint: | |
3636 | /* Field 4, the address, is omitted (which makes the columns | |
3637 | not line up too nicely with the headers, but the effect | |
3638 | is relatively readable). */ | |
3639 | if (addressprint) | |
3640 | ui_out_field_skip (uiout, "addr"); | |
3641 | annotate_field (5); | |
3642 | print_expression (b->exp, stb->stream); | |
3643 | ui_out_field_stream (uiout, "what", stb); | |
3644 | break; | |
3645 | ||
3646 | case bp_catch_load: | |
3647 | case bp_catch_unload: | |
3648 | /* Field 4, the address, is omitted (which makes the columns | |
3649 | not line up too nicely with the headers, but the effect | |
3650 | is relatively readable). */ | |
3651 | if (addressprint) | |
3652 | ui_out_field_skip (uiout, "addr"); | |
3653 | annotate_field (5); | |
3654 | if (b->dll_pathname == NULL) | |
3655 | { | |
3656 | ui_out_field_string (uiout, "what", "<any library>"); | |
3657 | ui_out_spaces (uiout, 1); | |
3658 | } | |
3659 | else | |
3660 | { | |
3661 | ui_out_text (uiout, "library \""); | |
3662 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3663 | ui_out_text (uiout, "\" "); | |
3664 | } | |
3665 | break; | |
3666 | ||
3667 | case bp_catch_fork: | |
3668 | case bp_catch_vfork: | |
3669 | /* Field 4, the address, is omitted (which makes the columns | |
3670 | not line up too nicely with the headers, but the effect | |
3671 | is relatively readable). */ | |
3672 | if (addressprint) | |
3673 | ui_out_field_skip (uiout, "addr"); | |
3674 | annotate_field (5); | |
3a3e9ee3 | 3675 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) |
3086aeae DJ |
3676 | { |
3677 | ui_out_text (uiout, "process "); | |
3a3e9ee3 PA |
3678 | ui_out_field_int (uiout, "what", |
3679 | ptid_get_pid (b->forked_inferior_pid)); | |
3086aeae DJ |
3680 | ui_out_spaces (uiout, 1); |
3681 | } | |
0f699bbe | 3682 | break; |
3086aeae DJ |
3683 | |
3684 | case bp_catch_exec: | |
3685 | /* Field 4, the address, is omitted (which makes the columns | |
3686 | not line up too nicely with the headers, but the effect | |
3687 | is relatively readable). */ | |
3688 | if (addressprint) | |
3689 | ui_out_field_skip (uiout, "addr"); | |
3690 | annotate_field (5); | |
3691 | if (b->exec_pathname != NULL) | |
3692 | { | |
3693 | ui_out_text (uiout, "program \""); | |
3694 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3695 | ui_out_text (uiout, "\" "); | |
3696 | } | |
3697 | break; | |
3698 | ||
3086aeae DJ |
3699 | case bp_breakpoint: |
3700 | case bp_hardware_breakpoint: | |
3701 | case bp_until: | |
3702 | case bp_finish: | |
3703 | case bp_longjmp: | |
3704 | case bp_longjmp_resume: | |
3705 | case bp_step_resume: | |
3086aeae DJ |
3706 | case bp_watchpoint_scope: |
3707 | case bp_call_dummy: | |
3708 | case bp_shlib_event: | |
3709 | case bp_thread_event: | |
3710 | case bp_overlay_event: | |
3711 | if (addressprint) | |
3712 | { | |
3713 | annotate_field (4); | |
54e52265 | 3714 | if (header_of_multiple) |
0d381245 | 3715 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3716 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3717 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3718 | else |
0d381245 | 3719 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3720 | } |
3721 | annotate_field (5); | |
0d381245 VP |
3722 | if (!header_of_multiple) |
3723 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3724 | if (b->loc) | |
3725 | *last_addr = b->loc->address; | |
3086aeae DJ |
3726 | break; |
3727 | } | |
c906108c | 3728 | |
0d381245 | 3729 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3730 | { |
8b93c638 JM |
3731 | /* FIXME: This seems to be redundant and lost here; see the |
3732 | "stop only in" line a little further down. */ | |
3733 | ui_out_text (uiout, " thread "); | |
3734 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3735 | } |
3736 | ||
8b93c638 | 3737 | ui_out_text (uiout, "\n"); |
c4093a6a | 3738 | |
0d381245 | 3739 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3740 | { |
3741 | annotate_field (6); | |
8b93c638 | 3742 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3743 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3744 | the frame ID. */ | |
d0a55772 | 3745 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3746 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3747 | } |
3748 | ||
0d381245 | 3749 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3750 | { |
f7f9143b JB |
3751 | /* We do not print the condition for Ada exception catchpoints |
3752 | because the condition is an internal implementation detail | |
3753 | that we do not want to expose to the user. */ | |
c4093a6a | 3754 | annotate_field (7); |
8b93c638 | 3755 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3756 | ui_out_field_string (uiout, "cond", b->cond_string); |
3757 | ui_out_text (uiout, "\n"); | |
3758 | } | |
3759 | ||
0d381245 | 3760 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3761 | { |
3762 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3763 | ui_out_text (uiout, "\tstop only in thread "); |
3764 | ui_out_field_int (uiout, "thread", b->thread); | |
3765 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3766 | } |
3767 | ||
0d381245 | 3768 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count) |
c4093a6a JM |
3769 | { |
3770 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3771 | if (ep_is_catchpoint (b)) |
3772 | ui_out_text (uiout, "\tcatchpoint"); | |
3773 | else | |
3774 | ui_out_text (uiout, "\tbreakpoint"); | |
3775 | ui_out_text (uiout, " already hit "); | |
3776 | ui_out_field_int (uiout, "times", b->hit_count); | |
3777 | if (b->hit_count == 1) | |
3778 | ui_out_text (uiout, " time\n"); | |
3779 | else | |
3780 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3781 | } |
3782 | ||
fb40c209 AC |
3783 | /* Output the count also if it is zero, but only if this is |
3784 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3785 | if (ui_out_is_mi_like_p (uiout)) |
0d381245 | 3786 | if (!part_of_multiple && show_breakpoint_hit_counts && b->hit_count == 0) |
fb40c209 | 3787 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3788 | |
0d381245 | 3789 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3790 | { |
3791 | annotate_field (8); | |
8b93c638 JM |
3792 | ui_out_text (uiout, "\tignore next "); |
3793 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3794 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3795 | } |
3796 | ||
0d381245 | 3797 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3798 | { |
3b31d625 EZ |
3799 | struct cleanup *script_chain; |
3800 | ||
c4093a6a | 3801 | annotate_field (9); |
3b31d625 | 3802 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3803 | print_command_lines (uiout, l, 4); |
3b31d625 | 3804 | do_cleanups (script_chain); |
c4093a6a | 3805 | } |
d24317b4 VP |
3806 | |
3807 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3808 | { | |
3809 | if (b->addr_string) | |
3810 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3811 | else if (b->exp_string) | |
3812 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3813 | } | |
3814 | ||
3b31d625 | 3815 | do_cleanups (bkpt_chain); |
8b93c638 | 3816 | do_cleanups (old_chain); |
c4093a6a | 3817 | } |
c5aa993b | 3818 | |
0d381245 VP |
3819 | static void |
3820 | print_one_breakpoint (struct breakpoint *b, | |
3821 | CORE_ADDR *last_addr) | |
3822 | { | |
3823 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3824 | ||
3825 | /* If this breakpoint has custom print function, | |
3826 | it's already printed. Otherwise, print individual | |
3827 | locations, if any. */ | |
3828 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3829 | { | |
3830 | /* If breakpoint has a single location that is | |
3831 | disabled, we print it as if it had | |
3832 | several locations, since otherwise it's hard to | |
3833 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3834 | situation. |
3835 | Note that while hardware watchpoints have | |
3836 | several locations internally, that's no a property | |
3837 | exposed to user. */ | |
0d381245 | 3838 | if (b->loc |
a5606eee | 3839 | && !is_hardware_watchpoint (b) |
0d381245 | 3840 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3841 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3842 | { |
3843 | struct bp_location *loc; | |
3844 | int n = 1; | |
3845 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3846 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3847 | } | |
3848 | } | |
3849 | } | |
3850 | ||
3851 | ||
c4093a6a JM |
3852 | struct captured_breakpoint_query_args |
3853 | { | |
3854 | int bnum; | |
3855 | }; | |
c5aa993b | 3856 | |
c4093a6a | 3857 | static int |
2b65245e | 3858 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3859 | { |
3860 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3861 | struct breakpoint *b; |
c4093a6a JM |
3862 | CORE_ADDR dummy_addr = 0; |
3863 | ALL_BREAKPOINTS (b) | |
3864 | { | |
3865 | if (args->bnum == b->number) | |
c5aa993b | 3866 | { |
c4093a6a JM |
3867 | print_one_breakpoint (b, &dummy_addr); |
3868 | return GDB_RC_OK; | |
c5aa993b | 3869 | } |
c4093a6a JM |
3870 | } |
3871 | return GDB_RC_NONE; | |
3872 | } | |
c5aa993b | 3873 | |
c4093a6a | 3874 | enum gdb_rc |
ce43223b | 3875 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3876 | { |
3877 | struct captured_breakpoint_query_args args; | |
3878 | args.bnum = bnum; | |
3879 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3880 | an error. */ | |
b0b13bb4 DJ |
3881 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3882 | error_message, RETURN_MASK_ALL) < 0) | |
3883 | return GDB_RC_FAIL; | |
3884 | else | |
3885 | return GDB_RC_OK; | |
c4093a6a | 3886 | } |
c5aa993b | 3887 | |
7f3b0473 AC |
3888 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3889 | catchpoints, et.al.). */ | |
3890 | ||
3891 | static int | |
3892 | user_settable_breakpoint (const struct breakpoint *b) | |
3893 | { | |
3894 | return (b->type == bp_breakpoint | |
3895 | || b->type == bp_catch_load | |
3896 | || b->type == bp_catch_unload | |
3897 | || b->type == bp_catch_fork | |
3898 | || b->type == bp_catch_vfork | |
3899 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3900 | || b->type == bp_hardware_breakpoint |
3901 | || b->type == bp_watchpoint | |
3902 | || b->type == bp_read_watchpoint | |
3903 | || b->type == bp_access_watchpoint | |
3904 | || b->type == bp_hardware_watchpoint); | |
3905 | } | |
3906 | ||
3907 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3908 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3909 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3910 | |
c4093a6a | 3911 | static void |
fba45db2 | 3912 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3913 | { |
52f0bd74 | 3914 | struct breakpoint *b; |
c4093a6a | 3915 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3916 | int nr_printable_breakpoints; |
3b31d625 | 3917 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3918 | |
7f3b0473 AC |
3919 | /* Compute the number of rows in the table. */ |
3920 | nr_printable_breakpoints = 0; | |
3921 | ALL_BREAKPOINTS (b) | |
3922 | if (bnum == -1 | |
3923 | || bnum == b->number) | |
3924 | { | |
3925 | if (allflag || user_settable_breakpoint (b)) | |
3926 | nr_printable_breakpoints++; | |
3927 | } | |
3928 | ||
8b93c638 | 3929 | if (addressprint) |
3b31d625 EZ |
3930 | bkpttbl_chain |
3931 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3932 | "BreakpointTable"); | |
8b93c638 | 3933 | else |
3b31d625 EZ |
3934 | bkpttbl_chain |
3935 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3936 | "BreakpointTable"); | |
8b93c638 | 3937 | |
7f3b0473 | 3938 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3939 | annotate_breakpoints_headers (); |
3940 | if (nr_printable_breakpoints > 0) | |
3941 | annotate_field (0); | |
0d381245 | 3942 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3943 | if (nr_printable_breakpoints > 0) |
3944 | annotate_field (1); | |
3945 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3946 | if (nr_printable_breakpoints > 0) | |
3947 | annotate_field (2); | |
3948 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3949 | if (nr_printable_breakpoints > 0) | |
3950 | annotate_field (3); | |
54e52265 | 3951 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3952 | if (addressprint) |
7f3b0473 | 3953 | { |
d7faa9e7 AC |
3954 | if (nr_printable_breakpoints > 0) |
3955 | annotate_field (4); | |
17a912b6 | 3956 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3957 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3958 | else |
b25959ec | 3959 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3960 | } |
d7faa9e7 AC |
3961 | if (nr_printable_breakpoints > 0) |
3962 | annotate_field (5); | |
3963 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3964 | ui_out_table_body (uiout); | |
3965 | if (nr_printable_breakpoints > 0) | |
3966 | annotate_breakpoints_table (); | |
7f3b0473 | 3967 | |
c4093a6a JM |
3968 | ALL_BREAKPOINTS (b) |
3969 | if (bnum == -1 | |
3970 | || bnum == b->number) | |
3971 | { | |
3972 | /* We only print out user settable breakpoints unless the | |
3973 | allflag is set. */ | |
7f3b0473 AC |
3974 | if (allflag || user_settable_breakpoint (b)) |
3975 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3976 | } |
3977 | ||
3b31d625 | 3978 | do_cleanups (bkpttbl_chain); |
698384cd | 3979 | |
7f3b0473 | 3980 | if (nr_printable_breakpoints == 0) |
c906108c | 3981 | { |
8b93c638 JM |
3982 | if (bnum == -1) |
3983 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3984 | else | |
3985 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3986 | bnum); | |
c906108c SS |
3987 | } |
3988 | else | |
c4093a6a JM |
3989 | { |
3990 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3991 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3992 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
c4093a6a JM |
3993 | set_next_address (last_addr); |
3994 | } | |
c906108c | 3995 | |
c4093a6a JM |
3996 | /* FIXME? Should this be moved up so that it is only called when |
3997 | there have been breakpoints? */ | |
c906108c SS |
3998 | annotate_breakpoints_table_end (); |
3999 | } | |
4000 | ||
c906108c | 4001 | static void |
fba45db2 | 4002 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4003 | { |
4004 | int bnum = -1; | |
4005 | ||
4006 | if (bnum_exp) | |
bb518678 | 4007 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4008 | |
4009 | breakpoint_1 (bnum, 0); | |
4010 | } | |
4011 | ||
7a292a7a | 4012 | static void |
fba45db2 | 4013 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4014 | { |
4015 | int bnum = -1; | |
4016 | ||
4017 | if (bnum_exp) | |
bb518678 | 4018 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4019 | |
4020 | breakpoint_1 (bnum, 1); | |
4021 | } | |
4022 | ||
0d381245 VP |
4023 | static int |
4024 | breakpoint_has_pc (struct breakpoint *b, CORE_ADDR pc, asection *section) | |
4025 | { | |
4026 | struct bp_location *bl = b->loc; | |
4027 | for (; bl; bl = bl->next) | |
4028 | { | |
4029 | if (bl->address == pc | |
4030 | && (!overlay_debugging || bl->section == section)) | |
4031 | return 1; | |
4032 | } | |
4033 | return 0; | |
4034 | } | |
4035 | ||
c906108c SS |
4036 | /* Print a message describing any breakpoints set at PC. */ |
4037 | ||
4038 | static void | |
d674a25c | 4039 | describe_other_breakpoints (CORE_ADDR pc, asection *section, int thread) |
c906108c | 4040 | { |
52f0bd74 AC |
4041 | int others = 0; |
4042 | struct breakpoint *b; | |
c906108c SS |
4043 | |
4044 | ALL_BREAKPOINTS (b) | |
0d381245 | 4045 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4046 | if (others > 0) |
4047 | { | |
a3f17187 AC |
4048 | if (others == 1) |
4049 | printf_filtered (_("Note: breakpoint ")); | |
4050 | else /* if (others == ???) */ | |
4051 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4052 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4053 | if (breakpoint_has_pc (b, pc, section)) |
4054 | { | |
4055 | others--; | |
4056 | printf_filtered ("%d", b->number); | |
4057 | if (b->thread == -1 && thread != -1) | |
4058 | printf_filtered (" (all threads)"); | |
4059 | else if (b->thread != -1) | |
4060 | printf_filtered (" (thread %d)", b->thread); | |
4061 | printf_filtered ("%s%s ", | |
4062 | ((b->enable_state == bp_disabled || | |
4063 | b->enable_state == bp_call_disabled) | |
4064 | ? " (disabled)" | |
4065 | : b->enable_state == bp_permanent | |
4066 | ? " (permanent)" | |
4067 | : ""), | |
4068 | (others > 1) ? "," | |
4069 | : ((others == 1) ? " and" : "")); | |
4070 | } | |
a3f17187 | 4071 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4072 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4073 | printf_filtered (".\n"); |
4074 | } | |
4075 | } | |
4076 | \f | |
4077 | /* Set the default place to put a breakpoint | |
4078 | for the `break' command with no arguments. */ | |
4079 | ||
4080 | void | |
fba45db2 KB |
4081 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4082 | int line) | |
c906108c SS |
4083 | { |
4084 | default_breakpoint_valid = valid; | |
4085 | default_breakpoint_address = addr; | |
4086 | default_breakpoint_symtab = symtab; | |
4087 | default_breakpoint_line = line; | |
4088 | } | |
4089 | ||
e4f237da KB |
4090 | /* Return true iff it is meaningful to use the address member of |
4091 | BPT. For some breakpoint types, the address member is irrelevant | |
4092 | and it makes no sense to attempt to compare it to other addresses | |
4093 | (or use it for any other purpose either). | |
4094 | ||
4095 | More specifically, each of the following breakpoint types will always | |
4096 | have a zero valued address and we don't want check_duplicates() to mark | |
4097 | breakpoints of any of these types to be a duplicate of an actual | |
4098 | breakpoint at address zero: | |
4099 | ||
4100 | bp_watchpoint | |
4101 | bp_hardware_watchpoint | |
4102 | bp_read_watchpoint | |
4103 | bp_access_watchpoint | |
4104 | bp_catch_exec | |
e4f237da KB |
4105 | bp_catch_fork |
4106 | bp_catch_vork */ | |
4107 | ||
4108 | static int | |
4109 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4110 | { | |
4111 | enum bptype type = bpt->type; | |
4112 | ||
4113 | return (type != bp_watchpoint | |
4114 | && type != bp_hardware_watchpoint | |
4115 | && type != bp_read_watchpoint | |
4116 | && type != bp_access_watchpoint | |
4117 | && type != bp_catch_exec | |
e4f237da KB |
4118 | && type != bp_catch_fork |
4119 | && type != bp_catch_vfork); | |
4120 | } | |
4121 | ||
9f60f21b | 4122 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4123 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4124 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4125 | If we have a permanent breakpoint at the same place as BPT, make |
4126 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4127 | |
4128 | static void | |
0d381245 | 4129 | check_duplicates_for (CORE_ADDR address, asection *section) |
c906108c | 4130 | { |
075f6582 | 4131 | struct bp_location *b; |
52f0bd74 | 4132 | int count = 0; |
075f6582 | 4133 | struct bp_location *perm_bp = 0; |
c906108c | 4134 | |
075f6582 DJ |
4135 | ALL_BP_LOCATIONS (b) |
4136 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4137 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4138 | && b->enabled |
4139 | && !b->shlib_disabled | |
075f6582 DJ |
4140 | && b->address == address /* address / overlay match */ |
4141 | && (!overlay_debugging || b->section == section) | |
4142 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4143 | { |
c2c6d25f | 4144 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4145 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4146 | { |
4147 | perm_bp = b; | |
4148 | break; | |
4149 | } | |
4150 | ||
c5aa993b | 4151 | count++; |
075f6582 | 4152 | b->duplicate = count > 1; |
c5aa993b | 4153 | } |
c2c6d25f JM |
4154 | |
4155 | /* If we found a permanent breakpoint at this address, go over the | |
4156 | list again and declare all the other breakpoints there to be the | |
4157 | duplicates. */ | |
4158 | if (perm_bp) | |
4159 | { | |
075f6582 | 4160 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4161 | |
4162 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4163 | if (! perm_bp->inserted) |
8e65ff28 | 4164 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4165 | _("allegedly permanent breakpoint is not " |
4166 | "actually inserted")); | |
c2c6d25f | 4167 | |
075f6582 | 4168 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4169 | if (b != perm_bp) |
4170 | { | |
075f6582 | 4171 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4172 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4173 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4174 | && b->address == address /* address / overlay match */ |
4175 | && (!overlay_debugging || b->section == section) | |
4176 | && breakpoint_address_is_meaningful (b->owner)) | |
4177 | { | |
4178 | if (b->inserted) | |
4179 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4180 | _("another breakpoint was inserted on top of " |
4181 | "a permanent breakpoint")); | |
075f6582 DJ |
4182 | |
4183 | b->duplicate = 1; | |
4184 | } | |
c2c6d25f JM |
4185 | } |
4186 | } | |
c906108c SS |
4187 | } |
4188 | ||
0d381245 VP |
4189 | static void |
4190 | check_duplicates (struct breakpoint *bpt) | |
4191 | { | |
4192 | struct bp_location *bl = bpt->loc; | |
4193 | ||
4194 | if (! breakpoint_address_is_meaningful (bpt)) | |
4195 | return; | |
4196 | ||
4197 | for (; bl; bl = bl->next) | |
4198 | check_duplicates_for (bl->address, bl->section); | |
4199 | } | |
4200 | ||
76897487 KB |
4201 | static void |
4202 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4203 | int bnum, int have_bnum) | |
4204 | { | |
4205 | char astr1[40]; | |
4206 | char astr2[40]; | |
4207 | ||
bb599908 PH |
4208 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4209 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4210 | if (have_bnum) |
8a3fe4f8 | 4211 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4212 | bnum, astr1, astr2); |
4213 | else | |
8a3fe4f8 | 4214 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4215 | } |
4216 | ||
4217 | /* Adjust a breakpoint's address to account for architectural constraints | |
4218 | on breakpoint placement. Return the adjusted address. Note: Very | |
4219 | few targets require this kind of adjustment. For most targets, | |
4220 | this function is simply the identity function. */ | |
4221 | ||
4222 | static CORE_ADDR | |
88f7da05 | 4223 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4224 | { |
4225 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4226 | { | |
4227 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4228 | return bpaddr; | |
4229 | } | |
88f7da05 KB |
4230 | else if (bptype == bp_watchpoint |
4231 | || bptype == bp_hardware_watchpoint | |
4232 | || bptype == bp_read_watchpoint | |
4233 | || bptype == bp_access_watchpoint | |
4234 | || bptype == bp_catch_fork | |
4235 | || bptype == bp_catch_vfork | |
4236 | || bptype == bp_catch_exec) | |
4237 | { | |
4238 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4239 | have their addresses modified. */ | |
4240 | return bpaddr; | |
4241 | } | |
76897487 KB |
4242 | else |
4243 | { | |
4244 | CORE_ADDR adjusted_bpaddr; | |
4245 | ||
4246 | /* Some targets have architectural constraints on the placement | |
4247 | of breakpoint instructions. Obtain the adjusted address. */ | |
4248 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4249 | bpaddr); | |
4250 | ||
4251 | /* An adjusted breakpoint address can significantly alter | |
4252 | a user's expectations. Print a warning if an adjustment | |
4253 | is required. */ | |
4254 | if (adjusted_bpaddr != bpaddr) | |
4255 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4256 | ||
4257 | return adjusted_bpaddr; | |
4258 | } | |
4259 | } | |
4260 | ||
7cc221ef DJ |
4261 | /* Allocate a struct bp_location. */ |
4262 | ||
26bb91f3 | 4263 | static struct bp_location * |
e049a4b5 | 4264 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4265 | { |
4266 | struct bp_location *loc, *loc_p; | |
4267 | ||
4268 | loc = xmalloc (sizeof (struct bp_location)); | |
4269 | memset (loc, 0, sizeof (*loc)); | |
4270 | ||
e049a4b5 | 4271 | loc->owner = bpt; |
511a6cd4 | 4272 | loc->cond = NULL; |
0d381245 VP |
4273 | loc->shlib_disabled = 0; |
4274 | loc->enabled = 1; | |
e049a4b5 DJ |
4275 | |
4276 | switch (bp_type) | |
4277 | { | |
4278 | case bp_breakpoint: | |
4279 | case bp_until: | |
4280 | case bp_finish: | |
4281 | case bp_longjmp: | |
4282 | case bp_longjmp_resume: | |
4283 | case bp_step_resume: | |
e049a4b5 DJ |
4284 | case bp_watchpoint_scope: |
4285 | case bp_call_dummy: | |
4286 | case bp_shlib_event: | |
4287 | case bp_thread_event: | |
4288 | case bp_overlay_event: | |
4289 | case bp_catch_load: | |
4290 | case bp_catch_unload: | |
4291 | loc->loc_type = bp_loc_software_breakpoint; | |
4292 | break; | |
4293 | case bp_hardware_breakpoint: | |
4294 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4295 | break; | |
4296 | case bp_hardware_watchpoint: | |
4297 | case bp_read_watchpoint: | |
4298 | case bp_access_watchpoint: | |
4299 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4300 | break; | |
4301 | case bp_watchpoint: | |
4302 | case bp_catch_fork: | |
4303 | case bp_catch_vfork: | |
4304 | case bp_catch_exec: | |
e049a4b5 DJ |
4305 | loc->loc_type = bp_loc_other; |
4306 | break; | |
4307 | default: | |
e2e0b3e5 | 4308 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4309 | } |
4310 | ||
7cc221ef DJ |
4311 | return loc; |
4312 | } | |
4313 | ||
fe3f5fa8 VP |
4314 | static void free_bp_location (struct bp_location *loc) |
4315 | { | |
4316 | if (loc->cond) | |
4317 | xfree (loc->cond); | |
74960c60 VP |
4318 | |
4319 | if (loc->function_name) | |
4320 | xfree (loc->function_name); | |
4321 | ||
fe3f5fa8 VP |
4322 | xfree (loc); |
4323 | } | |
4324 | ||
0d381245 VP |
4325 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4326 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4327 | |
c40e75cd | 4328 | static struct breakpoint * |
0d381245 | 4329 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4330 | { |
52f0bd74 | 4331 | struct breakpoint *b, *b1; |
c906108c SS |
4332 | |
4333 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4334 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4335 | |
4d28f7a8 | 4336 | b->type = bptype; |
c906108c SS |
4337 | b->language = current_language->la_language; |
4338 | b->input_radix = input_radix; | |
4339 | b->thread = -1; | |
b5de0fa7 | 4340 | b->enable_state = bp_enabled; |
c906108c SS |
4341 | b->next = 0; |
4342 | b->silent = 0; | |
4343 | b->ignore_count = 0; | |
4344 | b->commands = NULL; | |
818dd999 | 4345 | b->frame_id = null_frame_id; |
c906108c SS |
4346 | b->dll_pathname = NULL; |
4347 | b->triggered_dll_pathname = NULL; | |
3a3e9ee3 | 4348 | b->forked_inferior_pid = null_ptid; |
c906108c | 4349 | b->exec_pathname = NULL; |
3086aeae | 4350 | b->ops = NULL; |
0d381245 | 4351 | b->condition_not_parsed = 0; |
c906108c SS |
4352 | |
4353 | /* Add this breakpoint to the end of the chain | |
4354 | so that a list of breakpoints will come out in order | |
4355 | of increasing numbers. */ | |
4356 | ||
4357 | b1 = breakpoint_chain; | |
4358 | if (b1 == 0) | |
4359 | breakpoint_chain = b; | |
4360 | else | |
4361 | { | |
4362 | while (b1->next) | |
4363 | b1 = b1->next; | |
4364 | b1->next = b; | |
4365 | } | |
0d381245 VP |
4366 | return b; |
4367 | } | |
4368 | ||
4369 | /* Initialize loc->function_name. */ | |
4370 | static void | |
4371 | set_breakpoint_location_function (struct bp_location *loc) | |
4372 | { | |
4373 | if (loc->owner->type == bp_breakpoint | |
4374 | || loc->owner->type == bp_hardware_breakpoint) | |
4375 | { | |
4376 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4377 | NULL, NULL); | |
4378 | if (loc->function_name) | |
4379 | loc->function_name = xstrdup (loc->function_name); | |
4380 | } | |
4381 | } | |
4382 | ||
4383 | /* set_raw_breakpoint is a low level routine for allocating and | |
4384 | partially initializing a breakpoint of type BPTYPE. The newly | |
4385 | created breakpoint's address, section, source file name, and line | |
4386 | number are provided by SAL. The newly created and partially | |
4387 | initialized breakpoint is added to the breakpoint chain and | |
4388 | is also returned as the value of this function. | |
4389 | ||
4390 | It is expected that the caller will complete the initialization of | |
4391 | the newly created breakpoint struct as well as output any status | |
4392 | information regarding the creation of a new breakpoint. In | |
4393 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4394 | number! Care should be taken to not allow an error to occur | |
4395 | prior to completing the initialization of the breakpoint. If this | |
4396 | should happen, a bogus breakpoint will be left on the chain. */ | |
4397 | ||
4398 | struct breakpoint * | |
4399 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4400 | { | |
4401 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4402 | CORE_ADDR adjusted_address; | |
4403 | ||
4404 | /* Adjust the breakpoint's address prior to allocating a location. | |
4405 | Once we call allocate_bp_location(), that mostly uninitialized | |
4406 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4407 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4408 | not want its scan of the location chain to find a breakpoint and |
4409 | location that's only been partially initialized. */ | |
4410 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4411 | ||
4412 | b->loc = allocate_bp_location (b, bptype); | |
4413 | b->loc->requested_address = sal.pc; | |
4414 | b->loc->address = adjusted_address; | |
4415 | ||
4416 | if (sal.symtab == NULL) | |
4417 | b->source_file = NULL; | |
4418 | else | |
4419 | b->source_file = savestring (sal.symtab->filename, | |
4420 | strlen (sal.symtab->filename)); | |
4421 | b->loc->section = sal.section; | |
4422 | b->line_number = sal.line; | |
4423 | ||
4424 | set_breakpoint_location_function (b->loc); | |
c906108c | 4425 | |
c906108c SS |
4426 | breakpoints_changed (); |
4427 | ||
4428 | return b; | |
4429 | } | |
4430 | ||
c2c6d25f JM |
4431 | |
4432 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4433 | instruction, hard-wired into the inferior's code. */ | |
4434 | void | |
4435 | make_breakpoint_permanent (struct breakpoint *b) | |
4436 | { | |
0d381245 | 4437 | struct bp_location *bl; |
b5de0fa7 | 4438 | b->enable_state = bp_permanent; |
c2c6d25f | 4439 | |
0d381245 VP |
4440 | /* By definition, permanent breakpoints are already present in the code. |
4441 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4442 | is called in just one place, so it's hard to say if it's reasonable | |
4443 | to have permanent breakpoint with multiple locations or not, | |
4444 | but it's easy to implmement. */ | |
4445 | for (bl = b->loc; bl; bl = bl->next) | |
4446 | bl->inserted = 1; | |
c2c6d25f JM |
4447 | } |
4448 | ||
1900040c MS |
4449 | static struct breakpoint * |
4450 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4451 | { | |
4452 | static int internal_breakpoint_number = -1; | |
4453 | struct symtab_and_line sal; | |
4454 | struct breakpoint *b; | |
4455 | ||
fe39c653 | 4456 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4457 | |
4458 | sal.pc = address; | |
4459 | sal.section = find_pc_overlay (sal.pc); | |
4460 | ||
4461 | b = set_raw_breakpoint (sal, type); | |
4462 | b->number = internal_breakpoint_number--; | |
4463 | b->disposition = disp_donttouch; | |
4464 | ||
4465 | return b; | |
4466 | } | |
4467 | ||
c906108c SS |
4468 | |
4469 | static void | |
fba45db2 | 4470 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4471 | { |
c906108c | 4472 | struct breakpoint *b; |
1900040c | 4473 | struct minimal_symbol *m; |
c906108c | 4474 | |
611c83ae PA |
4475 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4476 | return; | |
4477 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4478 | update_global_location_list (1); |
c906108c SS |
4479 | } |
4480 | ||
53a5351d JM |
4481 | /* Call this routine when stepping and nexting to enable a breakpoint |
4482 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4483 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4484 | ||
4485 | void | |
611c83ae | 4486 | set_longjmp_breakpoint (void) |
c906108c | 4487 | { |
52f0bd74 | 4488 | struct breakpoint *b; |
c906108c | 4489 | |
611c83ae | 4490 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4491 | { |
611c83ae PA |
4492 | create_longjmp_breakpoint ("longjmp"); |
4493 | create_longjmp_breakpoint ("_longjmp"); | |
4494 | create_longjmp_breakpoint ("siglongjmp"); | |
4495 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4496 | } |
c906108c SS |
4497 | } |
4498 | ||
611c83ae | 4499 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4500 | void |
611c83ae | 4501 | delete_longjmp_breakpoint (int thread) |
c906108c | 4502 | { |
611c83ae | 4503 | struct breakpoint *b, *temp; |
c906108c | 4504 | |
611c83ae PA |
4505 | ALL_BREAKPOINTS_SAFE (b, temp) |
4506 | if (b->type == bp_longjmp) | |
4507 | { | |
4508 | if (b->thread == thread) | |
4509 | delete_breakpoint (b); | |
4510 | } | |
c906108c SS |
4511 | } |
4512 | ||
1900040c MS |
4513 | static void |
4514 | create_overlay_event_breakpoint (char *func_name) | |
4515 | { | |
4516 | struct breakpoint *b; | |
4517 | struct minimal_symbol *m; | |
4518 | ||
5520a790 | 4519 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
1900040c MS |
4520 | return; |
4521 | ||
4522 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4523 | bp_overlay_event); | |
4524 | b->addr_string = xstrdup (func_name); | |
4525 | ||
4526 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4527 | { |
4528 | b->enable_state = bp_enabled; | |
4529 | overlay_events_enabled = 1; | |
4530 | } | |
1900040c | 4531 | else |
c02f5703 MS |
4532 | { |
4533 | b->enable_state = bp_disabled; | |
4534 | overlay_events_enabled = 0; | |
4535 | } | |
b60e7edf | 4536 | update_global_location_list (1); |
1900040c MS |
4537 | } |
4538 | ||
4539 | void | |
4540 | enable_overlay_breakpoints (void) | |
4541 | { | |
52f0bd74 | 4542 | struct breakpoint *b; |
1900040c MS |
4543 | |
4544 | ALL_BREAKPOINTS (b) | |
4545 | if (b->type == bp_overlay_event) | |
4546 | { | |
4547 | b->enable_state = bp_enabled; | |
b60e7edf | 4548 | update_global_location_list (1); |
c02f5703 | 4549 | overlay_events_enabled = 1; |
1900040c MS |
4550 | } |
4551 | } | |
4552 | ||
4553 | void | |
4554 | disable_overlay_breakpoints (void) | |
4555 | { | |
52f0bd74 | 4556 | struct breakpoint *b; |
1900040c MS |
4557 | |
4558 | ALL_BREAKPOINTS (b) | |
4559 | if (b->type == bp_overlay_event) | |
4560 | { | |
4561 | b->enable_state = bp_disabled; | |
b60e7edf | 4562 | update_global_location_list (0); |
c02f5703 | 4563 | overlay_events_enabled = 0; |
1900040c MS |
4564 | } |
4565 | } | |
4566 | ||
c4093a6a | 4567 | struct breakpoint * |
fba45db2 | 4568 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4569 | { |
4570 | struct breakpoint *b; | |
c4093a6a | 4571 | |
1900040c | 4572 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4573 | |
b5de0fa7 | 4574 | b->enable_state = bp_enabled; |
c4093a6a | 4575 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4576 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4577 | |
b60e7edf | 4578 | update_global_location_list_nothrow (1); |
74960c60 | 4579 | |
c4093a6a JM |
4580 | return b; |
4581 | } | |
4582 | ||
4583 | void | |
4584 | remove_thread_event_breakpoints (void) | |
4585 | { | |
4586 | struct breakpoint *b, *temp; | |
4587 | ||
4588 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4589 | if (b->type == bp_thread_event) | |
4590 | delete_breakpoint (b); | |
4591 | } | |
4592 | ||
0101ce28 JJ |
4593 | struct captured_parse_breakpoint_args |
4594 | { | |
4595 | char **arg_p; | |
4596 | struct symtabs_and_lines *sals_p; | |
4597 | char ***addr_string_p; | |
4598 | int *not_found_ptr; | |
4599 | }; | |
4600 | ||
4601 | struct lang_and_radix | |
4602 | { | |
4603 | enum language lang; | |
4604 | int radix; | |
4605 | }; | |
4606 | ||
0101ce28 | 4607 | |
cae688ec JJ |
4608 | void |
4609 | remove_solib_event_breakpoints (void) | |
4610 | { | |
4611 | struct breakpoint *b, *temp; | |
4612 | ||
4613 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4614 | if (b->type == bp_shlib_event) | |
4615 | delete_breakpoint (b); | |
4616 | } | |
4617 | ||
4618 | struct breakpoint * | |
4619 | create_solib_event_breakpoint (CORE_ADDR address) | |
4620 | { | |
4621 | struct breakpoint *b; | |
4622 | ||
4623 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4624 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4625 | return b; |
4626 | } | |
4627 | ||
4628 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4629 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4630 | ||
4631 | void | |
cb851954 | 4632 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4633 | { |
0d381245 | 4634 | struct bp_location *loc; |
cae688ec JJ |
4635 | int disabled_shlib_breaks = 0; |
4636 | ||
0d381245 | 4637 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4638 | { |
0d381245 VP |
4639 | struct breakpoint *b = loc->owner; |
4640 | /* We apply the check to all breakpoints, including disabled | |
4641 | for those with loc->duplicate set. This is so that when breakpoint | |
4642 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4643 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4644 | to insert those breakpoints and fail. */ | |
a77053c2 | 4645 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4646 | && !loc->shlib_disabled |
a77053c2 | 4647 | #ifdef PC_SOLIB |
0d381245 | 4648 | && PC_SOLIB (loc->address) |
a77053c2 | 4649 | #else |
0d381245 | 4650 | && solib_address (loc->address) |
a77053c2 MK |
4651 | #endif |
4652 | ) | |
0d381245 VP |
4653 | { |
4654 | loc->shlib_disabled = 1; | |
4655 | } | |
cae688ec JJ |
4656 | } |
4657 | } | |
4658 | ||
84acb35a JJ |
4659 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4660 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4661 | ||
75149521 | 4662 | static void |
84acb35a JJ |
4663 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4664 | { | |
0d381245 | 4665 | struct bp_location *loc; |
84acb35a JJ |
4666 | int disabled_shlib_breaks = 0; |
4667 | ||
0d381245 | 4668 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4669 | { |
0d381245 VP |
4670 | struct breakpoint *b = loc->owner; |
4671 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4672 | || loc->loc_type == bp_loc_software_breakpoint) | |
4673 | && !loc->shlib_disabled) | |
84acb35a | 4674 | { |
a77053c2 | 4675 | #ifdef PC_SOLIB |
0d381245 | 4676 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4677 | #else |
0d381245 | 4678 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4679 | #endif |
4680 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4681 | { |
0d381245 | 4682 | loc->shlib_disabled = 1; |
84acb35a JJ |
4683 | /* At this point, we cannot rely on remove_breakpoint |
4684 | succeeding so we must mark the breakpoint as not inserted | |
4685 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4686 | loc->inserted = 0; |
84acb35a JJ |
4687 | if (!disabled_shlib_breaks) |
4688 | { | |
4689 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4690 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4691 | so_name); |
4692 | } | |
4693 | disabled_shlib_breaks = 1; | |
4694 | } | |
4695 | } | |
4696 | } | |
84acb35a JJ |
4697 | } |
4698 | ||
c906108c | 4699 | static void |
fba45db2 KB |
4700 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4701 | enum bptype bp_kind) | |
c906108c | 4702 | { |
c5aa993b JM |
4703 | struct symtab_and_line sal; |
4704 | struct breakpoint *b; | |
4705 | int thread = -1; /* All threads. */ | |
4706 | ||
fe39c653 | 4707 | init_sal (&sal); |
c906108c SS |
4708 | sal.pc = 0; |
4709 | sal.symtab = NULL; | |
4710 | sal.line = 0; | |
c5aa993b | 4711 | |
4d28f7a8 | 4712 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4713 | set_breakpoint_count (breakpoint_count + 1); |
4714 | b->number = breakpoint_count; | |
53a5351d JM |
4715 | b->cond_string = (cond_string == NULL) ? |
4716 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4717 | b->thread = thread; |
4718 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4719 | b->enable_state = bp_enabled; |
4720 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
3a3e9ee3 | 4721 | b->forked_inferior_pid = null_ptid; |
b60e7edf | 4722 | update_global_location_list (1); |
74960c60 | 4723 | |
c5aa993b | 4724 | |
c906108c SS |
4725 | mention (b); |
4726 | } | |
4727 | ||
9b70b993 | 4728 | static void |
fba45db2 | 4729 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4730 | { |
4731 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4732 | } | |
c5aa993b | 4733 | |
9b70b993 | 4734 | static void |
fba45db2 | 4735 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4736 | { |
4737 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4738 | } | |
4739 | ||
9b70b993 | 4740 | static void |
fba45db2 | 4741 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4742 | { |
c5aa993b JM |
4743 | struct symtab_and_line sal; |
4744 | struct breakpoint *b; | |
4745 | int thread = -1; /* All threads. */ | |
c906108c | 4746 | |
fe39c653 | 4747 | init_sal (&sal); |
c906108c SS |
4748 | sal.pc = 0; |
4749 | sal.symtab = NULL; | |
4750 | sal.line = 0; | |
4751 | ||
4d28f7a8 | 4752 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4753 | set_breakpoint_count (breakpoint_count + 1); |
4754 | b->number = breakpoint_count; | |
53a5351d JM |
4755 | b->cond_string = (cond_string == NULL) ? |
4756 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4757 | b->thread = thread; |
4758 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4759 | b->enable_state = bp_enabled; |
4760 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
b60e7edf | 4761 | update_global_location_list (1); |
c906108c | 4762 | |
c906108c SS |
4763 | mention (b); |
4764 | } | |
4765 | ||
4766 | static int | |
fba45db2 | 4767 | hw_breakpoint_used_count (void) |
c906108c | 4768 | { |
52f0bd74 | 4769 | struct breakpoint *b; |
c906108c SS |
4770 | int i = 0; |
4771 | ||
4772 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4773 | { |
b5de0fa7 | 4774 | if (b->type == bp_hardware_breakpoint && b->enable_state == bp_enabled) |
c5aa993b JM |
4775 | i++; |
4776 | } | |
c906108c SS |
4777 | |
4778 | return i; | |
4779 | } | |
4780 | ||
4781 | static int | |
fba45db2 | 4782 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4783 | { |
52f0bd74 | 4784 | struct breakpoint *b; |
c906108c SS |
4785 | int i = 0; |
4786 | ||
4787 | *other_type_used = 0; | |
4788 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4789 | { |
468d015d | 4790 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4791 | { |
4792 | if (b->type == type) | |
4793 | i++; | |
4794 | else if ((b->type == bp_hardware_watchpoint || | |
4795 | b->type == bp_read_watchpoint || | |
468d015d | 4796 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4797 | *other_type_used = 1; |
4798 | } | |
4799 | } | |
c906108c SS |
4800 | return i; |
4801 | } | |
4802 | ||
c906108c | 4803 | void |
fba45db2 | 4804 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4805 | { |
c5aa993b | 4806 | struct breakpoint *b; |
c906108c SS |
4807 | |
4808 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4809 | { |
4810 | if (((b->type == bp_watchpoint) | |
4811 | || (b->type == bp_hardware_watchpoint) | |
4812 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4813 | || (b->type == bp_access_watchpoint)) |
468d015d | 4814 | && breakpoint_enabled (b)) |
c5aa993b | 4815 | { |
b5de0fa7 | 4816 | b->enable_state = bp_call_disabled; |
b60e7edf | 4817 | update_global_location_list (0); |
c5aa993b JM |
4818 | } |
4819 | } | |
c906108c SS |
4820 | } |
4821 | ||
4822 | void | |
fba45db2 | 4823 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4824 | { |
c5aa993b | 4825 | struct breakpoint *b; |
c906108c SS |
4826 | |
4827 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4828 | { |
4829 | if (((b->type == bp_watchpoint) | |
4830 | || (b->type == bp_hardware_watchpoint) | |
4831 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4832 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4833 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4834 | { |
b5de0fa7 | 4835 | b->enable_state = bp_enabled; |
b60e7edf | 4836 | update_global_location_list (1); |
c5aa993b JM |
4837 | } |
4838 | } | |
c906108c SS |
4839 | } |
4840 | ||
4841 | ||
4842 | /* Set a breakpoint that will evaporate an end of command | |
4843 | at address specified by SAL. | |
4844 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4845 | ||
4846 | struct breakpoint * | |
818dd999 | 4847 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4848 | enum bptype type) |
c906108c | 4849 | { |
52f0bd74 | 4850 | struct breakpoint *b; |
4d28f7a8 | 4851 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4852 | b->enable_state = bp_enabled; |
4853 | b->disposition = disp_donttouch; | |
818dd999 | 4854 | b->frame_id = frame_id; |
c906108c SS |
4855 | |
4856 | /* If we're debugging a multi-threaded program, then we | |
4857 | want momentary breakpoints to be active in only a | |
4858 | single thread of control. */ | |
39f77062 KB |
4859 | if (in_thread_list (inferior_ptid)) |
4860 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4861 | |
b60e7edf | 4862 | update_global_location_list_nothrow (1); |
74960c60 | 4863 | |
c906108c SS |
4864 | return b; |
4865 | } | |
611c83ae PA |
4866 | |
4867 | struct breakpoint * | |
4868 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4869 | { | |
4870 | struct symtab_and_line sal; | |
4871 | ||
4872 | sal = find_pc_line (pc, 0); | |
4873 | sal.pc = pc; | |
4874 | sal.section = find_pc_overlay (pc); | |
4875 | sal.explicit_pc = 1; | |
4876 | ||
4877 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4878 | } | |
c906108c | 4879 | \f |
c5aa993b | 4880 | |
c906108c SS |
4881 | /* Tell the user we have just set a breakpoint B. */ |
4882 | ||
4883 | static void | |
fba45db2 | 4884 | mention (struct breakpoint *b) |
c906108c SS |
4885 | { |
4886 | int say_where = 0; | |
3b31d625 | 4887 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4888 | struct ui_stream *stb; |
4889 | ||
4890 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4891 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4892 | |
9a4105ab AC |
4893 | /* FIXME: This is misplaced; mention() is called by things (like |
4894 | hitting a watchpoint) other than breakpoint creation. It should | |
4895 | be possible to clean this up and at the same time replace the | |
4896 | random calls to breakpoint_changed with this hook, as has already | |
4897 | been done for deprecated_delete_breakpoint_hook and so on. */ | |
4898 | if (deprecated_create_breakpoint_hook) | |
4899 | deprecated_create_breakpoint_hook (b); | |
104c1213 | 4900 | breakpoint_create_event (b->number); |
c906108c | 4901 | |
3086aeae DJ |
4902 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4903 | b->ops->print_mention (b); | |
4904 | else | |
4905 | switch (b->type) | |
4906 | { | |
4907 | case bp_none: | |
a3f17187 | 4908 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4909 | break; |
4910 | case bp_watchpoint: | |
4911 | ui_out_text (uiout, "Watchpoint "); | |
4912 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4913 | ui_out_field_int (uiout, "number", b->number); | |
4914 | ui_out_text (uiout, ": "); | |
4915 | print_expression (b->exp, stb->stream); | |
4916 | ui_out_field_stream (uiout, "exp", stb); | |
4917 | do_cleanups (ui_out_chain); | |
4918 | break; | |
4919 | case bp_hardware_watchpoint: | |
4920 | ui_out_text (uiout, "Hardware watchpoint "); | |
4921 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4922 | ui_out_field_int (uiout, "number", b->number); | |
4923 | ui_out_text (uiout, ": "); | |
4924 | print_expression (b->exp, stb->stream); | |
4925 | ui_out_field_stream (uiout, "exp", stb); | |
4926 | do_cleanups (ui_out_chain); | |
4927 | break; | |
4928 | case bp_read_watchpoint: | |
4929 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4930 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4931 | ui_out_field_int (uiout, "number", b->number); | |
4932 | ui_out_text (uiout, ": "); | |
4933 | print_expression (b->exp, stb->stream); | |
4934 | ui_out_field_stream (uiout, "exp", stb); | |
4935 | do_cleanups (ui_out_chain); | |
4936 | break; | |
4937 | case bp_access_watchpoint: | |
4938 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4939 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4940 | ui_out_field_int (uiout, "number", b->number); | |
4941 | ui_out_text (uiout, ": "); | |
4942 | print_expression (b->exp, stb->stream); | |
4943 | ui_out_field_stream (uiout, "exp", stb); | |
4944 | do_cleanups (ui_out_chain); | |
4945 | break; | |
4946 | case bp_breakpoint: | |
4947 | if (ui_out_is_mi_like_p (uiout)) | |
4948 | { | |
4949 | say_where = 0; | |
4950 | break; | |
4951 | } | |
2cec12e5 AR |
4952 | if (b->disposition == disp_del) |
4953 | printf_filtered (_("Temporary breakpoint")); | |
4954 | else | |
4955 | printf_filtered (_("Breakpoint")); | |
4956 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4957 | say_where = 1; |
4958 | break; | |
4959 | case bp_hardware_breakpoint: | |
4960 | if (ui_out_is_mi_like_p (uiout)) | |
4961 | { | |
4962 | say_where = 0; | |
4963 | break; | |
4964 | } | |
a3f17187 | 4965 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4966 | say_where = 1; |
4967 | break; | |
4968 | case bp_catch_load: | |
4969 | case bp_catch_unload: | |
a3f17187 | 4970 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
4971 | b->number, |
4972 | (b->type == bp_catch_load) ? "load" : "unload", | |
4973 | (b->dll_pathname != NULL) ? | |
4974 | b->dll_pathname : "<any library>"); | |
4975 | break; | |
4976 | case bp_catch_fork: | |
4977 | case bp_catch_vfork: | |
a3f17187 | 4978 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
4979 | b->number, |
4980 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
4981 | break; | |
4982 | case bp_catch_exec: | |
a3f17187 | 4983 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
4984 | b->number); |
4985 | break; | |
3086aeae DJ |
4986 | |
4987 | case bp_until: | |
4988 | case bp_finish: | |
4989 | case bp_longjmp: | |
4990 | case bp_longjmp_resume: | |
4991 | case bp_step_resume: | |
3086aeae DJ |
4992 | case bp_call_dummy: |
4993 | case bp_watchpoint_scope: | |
4994 | case bp_shlib_event: | |
4995 | case bp_thread_event: | |
4996 | case bp_overlay_event: | |
4997 | break; | |
4998 | } | |
c906108c | 4999 | |
c906108c SS |
5000 | if (say_where) |
5001 | { | |
a3f17187 AC |
5002 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5003 | single string. */ | |
0d381245 | 5004 | if (b->loc == NULL) |
c906108c | 5005 | { |
a3f17187 | 5006 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5007 | } |
5008 | else | |
5009 | { | |
5010 | if (addressprint || b->source_file == NULL) | |
5011 | { | |
5012 | printf_filtered (" at "); | |
ed49a04f | 5013 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5014 | } |
5015 | if (b->source_file) | |
5016 | printf_filtered (": file %s, line %d.", | |
5017 | b->source_file, b->line_number); | |
0d381245 VP |
5018 | |
5019 | if (b->loc->next) | |
5020 | { | |
5021 | struct bp_location *loc = b->loc; | |
5022 | int n = 0; | |
5023 | for (; loc; loc = loc->next) | |
5024 | ++n; | |
5025 | printf_filtered (" (%d locations)", n); | |
5026 | } | |
5027 | ||
c906108c | 5028 | } |
c906108c | 5029 | } |
8b93c638 | 5030 | do_cleanups (old_chain); |
9dc5e2a9 | 5031 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5032 | return; |
c906108c SS |
5033 | printf_filtered ("\n"); |
5034 | } | |
c906108c | 5035 | \f |
c5aa993b | 5036 | |
0d381245 VP |
5037 | static struct bp_location * |
5038 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5039 | const struct symtab_and_line *sal) | |
5040 | { | |
5041 | struct bp_location *loc, **tmp; | |
5042 | ||
5043 | loc = allocate_bp_location (b, bptype); | |
5044 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5045 | ; | |
5046 | *tmp = loc; | |
5047 | loc->requested_address = sal->pc; | |
5048 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5049 | bptype); | |
5050 | loc->section = sal->section; | |
5051 | ||
5052 | set_breakpoint_location_function (loc); | |
5053 | return loc; | |
5054 | } | |
c3f6f71d | 5055 | |
018d34a4 VP |
5056 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5057 | as textual description of the location, and COND_STRING | |
db107f19 | 5058 | as condition expression. */ |
018d34a4 VP |
5059 | |
5060 | static void | |
0d381245 | 5061 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5062 | char *cond_string, |
5063 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5064 | int thread, int ignore_count, |
5065 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5066 | { |
0d381245 VP |
5067 | struct breakpoint *b = NULL; |
5068 | int i; | |
018d34a4 VP |
5069 | |
5070 | if (type == bp_hardware_breakpoint) | |
5071 | { | |
5072 | int i = hw_breakpoint_used_count (); | |
5073 | int target_resources_ok = | |
5074 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5075 | i + 1, 0); | |
5076 | if (target_resources_ok == 0) | |
5077 | error (_("No hardware breakpoint support in the target.")); | |
5078 | else if (target_resources_ok < 0) | |
5079 | error (_("Hardware breakpoints used exceeds limit.")); | |
5080 | } | |
5081 | ||
0d381245 VP |
5082 | for (i = 0; i < sals.nelts; ++i) |
5083 | { | |
5084 | struct symtab_and_line sal = sals.sals[i]; | |
5085 | struct bp_location *loc; | |
5086 | ||
5087 | if (from_tty) | |
5088 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5089 | ||
5090 | if (i == 0) | |
5091 | { | |
5092 | b = set_raw_breakpoint (sal, type); | |
5093 | set_breakpoint_count (breakpoint_count + 1); | |
5094 | b->number = breakpoint_count; | |
5095 | b->thread = thread; | |
018d34a4 | 5096 | |
0d381245 VP |
5097 | b->cond_string = cond_string; |
5098 | b->ignore_count = ignore_count; | |
5099 | b->enable_state = bp_enabled; | |
5100 | b->disposition = disposition; | |
018d34a4 | 5101 | |
0d381245 VP |
5102 | loc = b->loc; |
5103 | } | |
5104 | else | |
018d34a4 | 5105 | { |
0d381245 VP |
5106 | loc = add_location_to_breakpoint (b, type, &sal); |
5107 | } | |
5108 | ||
5109 | if (b->cond_string) | |
5110 | { | |
5111 | char *arg = b->cond_string; | |
d32a6982 | 5112 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5113 | if (*arg) |
db107f19 | 5114 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5115 | } |
0d381245 | 5116 | } |
018d34a4 VP |
5117 | |
5118 | if (addr_string) | |
5119 | b->addr_string = addr_string; | |
5120 | else | |
5121 | /* addr_string has to be used or breakpoint_re_set will delete | |
5122 | me. */ | |
5123 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5124 | ||
604133b5 | 5125 | b->ops = ops; |
018d34a4 VP |
5126 | mention (b); |
5127 | } | |
5128 | ||
ed0616c6 VP |
5129 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5130 | elements to fill the void space. */ | |
5131 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5132 | { | |
5133 | int i = index_to_remove+1; | |
5134 | int last_index = sal->nelts-1; | |
5135 | ||
5136 | for (;i <= last_index; ++i) | |
5137 | sal->sals[i-1] = sal->sals[i]; | |
5138 | ||
5139 | --(sal->nelts); | |
5140 | } | |
5141 | ||
5142 | /* If appropriate, obtains all sals that correspond | |
5143 | to the same file and line as SAL. This is done | |
5144 | only if SAL does not have explicit PC and has | |
5145 | line and file information. If we got just a single | |
5146 | expanded sal, return the original. | |
5147 | ||
5148 | Otherwise, if SAL.explicit_line is not set, filter out | |
5149 | all sals for which the name of enclosing function | |
5150 | is different from SAL. This makes sure that if we have | |
5151 | breakpoint originally set in template instantiation, say | |
5152 | foo<int>(), we won't expand SAL to locations at the same | |
5153 | line in all existing instantiations of 'foo'. | |
5154 | ||
5155 | */ | |
5156 | struct symtabs_and_lines | |
5157 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5158 | { | |
5159 | struct symtabs_and_lines expanded; | |
5160 | CORE_ADDR original_pc = sal.pc; | |
5161 | char *original_function = NULL; | |
5162 | int found; | |
5163 | int i; | |
5164 | ||
5165 | /* If we have explicit pc, don't expand. | |
5166 | If we have no line number, we can't expand. */ | |
5167 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5168 | { | |
5169 | expanded.nelts = 1; | |
5170 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5171 | expanded.sals[0] = sal; | |
5172 | return expanded; | |
5173 | } | |
5174 | ||
5175 | sal.pc = 0; | |
5176 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5177 | ||
5178 | expanded = expand_line_sal (sal); | |
5179 | if (expanded.nelts == 1) | |
5180 | { | |
5181 | /* We had one sal, we got one sal. Without futher | |
5182 | processing, just return the original sal. */ | |
5183 | xfree (expanded.sals); | |
5184 | expanded.nelts = 1; | |
5185 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5186 | sal.pc = original_pc; | |
5187 | expanded.sals[0] = sal; | |
5188 | return expanded; | |
5189 | } | |
5190 | ||
5191 | if (!sal.explicit_line) | |
5192 | { | |
5193 | CORE_ADDR func_addr, func_end; | |
5194 | for (i = 0; i < expanded.nelts; ++i) | |
5195 | { | |
5196 | CORE_ADDR pc = expanded.sals[i].pc; | |
5197 | char *this_function; | |
5198 | if (find_pc_partial_function (pc, &this_function, | |
5199 | &func_addr, &func_end)) | |
5200 | { | |
5201 | if (this_function && | |
5202 | strcmp (this_function, original_function) != 0) | |
5203 | { | |
5204 | remove_sal (&expanded, i); | |
5205 | --i; | |
5206 | } | |
5207 | else if (func_addr == pc) | |
5208 | { | |
5209 | /* We're at beginning of a function, and should | |
5210 | skip prologue. */ | |
5211 | struct symbol *sym = find_pc_function (pc); | |
5212 | if (sym) | |
5213 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5214 | else | |
5215 | expanded.sals[i].pc | |
5216 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5217 | } | |
5218 | } | |
5219 | } | |
5220 | } | |
5221 | ||
5222 | ||
5223 | if (expanded.nelts <= 1) | |
5224 | { | |
5225 | /* This is un ugly workaround. If we get zero | |
5226 | expanded sals then something is really wrong. | |
5227 | Fix that by returnign the original sal. */ | |
5228 | xfree (expanded.sals); | |
5229 | expanded.nelts = 1; | |
5230 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5231 | sal.pc = original_pc; | |
5232 | expanded.sals[0] = sal; | |
5233 | return expanded; | |
5234 | } | |
5235 | ||
5236 | if (original_pc) | |
5237 | { | |
5238 | found = 0; | |
5239 | for (i = 0; i < expanded.nelts; ++i) | |
5240 | if (expanded.sals[i].pc == original_pc) | |
5241 | { | |
5242 | found = 1; | |
5243 | break; | |
5244 | } | |
5245 | gdb_assert (found); | |
5246 | } | |
5247 | ||
5248 | return expanded; | |
5249 | } | |
5250 | ||
018d34a4 VP |
5251 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5252 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5253 | value. COND_STRING, if not NULL, specified the condition to be | |
5254 | used for all breakpoints. Essentially the only case where | |
5255 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5256 | function. In that case, it's still not possible to specify | |
5257 | separate conditions for different overloaded functions, so | |
5258 | we take just a single condition string. | |
5259 | ||
c3f6f71d | 5260 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5261 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5262 | array contents). If the function fails (error() is called), the |
5263 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5264 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5265 | |
5266 | static void | |
c3f6f71d | 5267 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5268 | char *cond_string, |
c3f6f71d | 5269 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5270 | int thread, int ignore_count, |
5271 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5272 | { |
018d34a4 VP |
5273 | int i; |
5274 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5275 | { |
ed0616c6 VP |
5276 | struct symtabs_and_lines expanded = |
5277 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5278 | |
ed0616c6 | 5279 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5280 | cond_string, type, disposition, |
604133b5 | 5281 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5282 | } |
74960c60 | 5283 | |
b60e7edf | 5284 | update_global_location_list (1); |
c3f6f71d | 5285 | } |
c906108c | 5286 | |
c3f6f71d JM |
5287 | /* Parse ARG which is assumed to be a SAL specification possibly |
5288 | followed by conditionals. On return, SALS contains an array of SAL | |
5289 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5290 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5291 | |
b9362cc7 | 5292 | static void |
c3f6f71d JM |
5293 | parse_breakpoint_sals (char **address, |
5294 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5295 | char ***addr_string, |
5296 | int *not_found_ptr) | |
c3f6f71d JM |
5297 | { |
5298 | char *addr_start = *address; | |
5299 | *addr_string = NULL; | |
5300 | /* If no arg given, or if first arg is 'if ', use the default | |
5301 | breakpoint. */ | |
5302 | if ((*address) == NULL | |
5303 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5304 | { |
5305 | if (default_breakpoint_valid) | |
5306 | { | |
c3f6f71d | 5307 | struct symtab_and_line sal; |
fe39c653 | 5308 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5309 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5310 | xmalloc (sizeof (struct symtab_and_line)); |
5311 | sal.pc = default_breakpoint_address; | |
5312 | sal.line = default_breakpoint_line; | |
5313 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5314 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5315 | sals->sals[0] = sal; |
5316 | sals->nelts = 1; | |
c906108c SS |
5317 | } |
5318 | else | |
8a3fe4f8 | 5319 | error (_("No default breakpoint address now.")); |
c906108c SS |
5320 | } |
5321 | else | |
5322 | { | |
c906108c | 5323 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5324 | current_source_symtab (which is decode_line_1's default). This |
5325 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5326 | leaving default_breakpoint_* alone. |
5327 | ObjC: However, don't match an Objective-C method name which | |
5328 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5329 | |
c214a6fd | 5330 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5331 | |
c906108c | 5332 | if (default_breakpoint_valid |
0378c332 | 5333 | && (!cursal.symtab |
1aeae86e AF |
5334 | || ((strchr ("+-", (*address)[0]) != NULL) |
5335 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5336 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5337 | default_breakpoint_line, addr_string, |
5338 | not_found_ptr); | |
c906108c | 5339 | else |
0101ce28 JJ |
5340 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5341 | addr_string, not_found_ptr); | |
c906108c | 5342 | } |
c3f6f71d JM |
5343 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5344 | if (sals->nelts > 0 && *addr_string == NULL) | |
5345 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5346 | if (addr_start != (*address)) | |
c906108c | 5347 | { |
c3f6f71d JM |
5348 | int i; |
5349 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5350 | { |
c3f6f71d JM |
5351 | /* Add the string if not present. */ |
5352 | if ((*addr_string)[i] == NULL) | |
5353 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5354 | } |
5355 | } | |
c3f6f71d | 5356 | } |
c906108c | 5357 | |
c906108c | 5358 | |
c3f6f71d JM |
5359 | /* Convert each SAL into a real PC. Verify that the PC can be |
5360 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5361 | |
b9362cc7 | 5362 | static void |
c3f6f71d JM |
5363 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5364 | char *address) | |
5365 | { | |
5366 | int i; | |
5367 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5368 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5369 | } |
5370 | ||
05ff989b | 5371 | static void |
0101ce28 JJ |
5372 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5373 | { | |
5374 | struct captured_parse_breakpoint_args *args = data; | |
5375 | ||
5376 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5377 | args->not_found_ptr); | |
0101ce28 JJ |
5378 | } |
5379 | ||
018d34a4 VP |
5380 | /* Given TOK, a string specification of condition and thread, as |
5381 | accepted by the 'break' command, extract the condition | |
5382 | string and thread number and set *COND_STRING and *THREAD. | |
5383 | PC identifies the context at which the condition should be parsed. | |
5384 | If no condition is found, *COND_STRING is set to NULL. | |
5385 | If no thread is found, *THREAD is set to -1. */ | |
5386 | static void | |
5387 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5388 | char **cond_string, int *thread) | |
5389 | { | |
5390 | *cond_string = NULL; | |
5391 | *thread = -1; | |
5392 | while (tok && *tok) | |
5393 | { | |
5394 | char *end_tok; | |
5395 | int toklen; | |
5396 | char *cond_start = NULL; | |
5397 | char *cond_end = NULL; | |
5398 | while (*tok == ' ' || *tok == '\t') | |
5399 | tok++; | |
5400 | ||
5401 | end_tok = tok; | |
5402 | ||
5403 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5404 | end_tok++; | |
5405 | ||
5406 | toklen = end_tok - tok; | |
5407 | ||
5408 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5409 | { | |
5410 | tok = cond_start = end_tok + 1; | |
5411 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5412 | cond_end = tok; | |
5413 | *cond_string = savestring (cond_start, | |
5414 | cond_end - cond_start); | |
5415 | } | |
5416 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5417 | { | |
5418 | char *tmptok; | |
5419 | ||
5420 | tok = end_tok + 1; | |
5421 | tmptok = tok; | |
5422 | *thread = strtol (tok, &tok, 0); | |
5423 | if (tok == tmptok) | |
5424 | error (_("Junk after thread keyword.")); | |
5425 | if (!valid_thread_id (*thread)) | |
5426 | error (_("Unknown thread %d."), *thread); | |
5427 | } | |
5428 | else | |
5429 | error (_("Junk at end of arguments.")); | |
5430 | } | |
5431 | } | |
5432 | ||
72b2ff0e VP |
5433 | /* Set a breakpoint. This function is shared between |
5434 | CLI and MI functions for setting a breakpoint. | |
5435 | This function has two major modes of operations, | |
5436 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5437 | If non-zero, the function will parse arg, extracting | |
5438 | breakpoint location, address and thread. Otherwise, | |
5439 | ARG is just the location of breakpoint, with condition | |
5440 | and thread specified by the COND_STRING and THREAD | |
5441 | parameters. */ | |
0101ce28 | 5442 | |
98deb0da | 5443 | static void |
72b2ff0e | 5444 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5445 | int parse_condition_and_thread, |
5446 | int tempflag, int hardwareflag, | |
5447 | int ignore_count, | |
5448 | enum auto_boolean pending_break_support, | |
604133b5 | 5449 | struct breakpoint_ops *ops, |
60c46647 | 5450 | int from_tty) |
c3f6f71d | 5451 | { |
71fff37b | 5452 | struct gdb_exception e; |
c3f6f71d | 5453 | struct symtabs_and_lines sals; |
0101ce28 | 5454 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5455 | char *copy_arg; |
5456 | char *err_msg; | |
c3f6f71d JM |
5457 | char *addr_start = arg; |
5458 | char **addr_string; | |
5459 | struct cleanup *old_chain; | |
5460 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5461 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5462 | int i; |
0101ce28 | 5463 | int pending = 0; |
0101ce28 | 5464 | int not_found = 0; |
c3f6f71d | 5465 | |
c3f6f71d JM |
5466 | sals.sals = NULL; |
5467 | sals.nelts = 0; | |
5468 | addr_string = NULL; | |
c3f6f71d | 5469 | |
0101ce28 JJ |
5470 | parse_args.arg_p = &arg; |
5471 | parse_args.sals_p = &sals; | |
5472 | parse_args.addr_string_p = &addr_string; | |
5473 | parse_args.not_found_ptr = ¬_found; | |
5474 | ||
05ff989b AC |
5475 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5476 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5477 | |
5478 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5479 | switch (e.reason) |
0101ce28 | 5480 | { |
05ff989b | 5481 | case RETURN_QUIT: |
98deb0da | 5482 | throw_exception (e); |
05ff989b AC |
5483 | case RETURN_ERROR: |
5484 | switch (e.error) | |
0101ce28 | 5485 | { |
05ff989b | 5486 | case NOT_FOUND_ERROR: |
0101ce28 | 5487 | |
05ff989b AC |
5488 | /* If pending breakpoint support is turned off, throw |
5489 | error. */ | |
fa8d40ab JJ |
5490 | |
5491 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5492 | throw_exception (e); |
5493 | ||
5494 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5495 | |
05ff989b AC |
5496 | /* If pending breakpoint support is auto query and the user |
5497 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5498 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5499 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5500 | return; |
fa8d40ab | 5501 | |
05ff989b AC |
5502 | /* At this point, either the user was queried about setting |
5503 | a pending breakpoint and selected yes, or pending | |
5504 | breakpoint behavior is on and thus a pending breakpoint | |
5505 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5506 | copy_arg = xstrdup (addr_start); |
5507 | addr_string = ©_arg; | |
5508 | sals.nelts = 1; | |
5509 | sals.sals = &pending_sal; | |
5510 | pending_sal.pc = 0; | |
5511 | pending = 1; | |
05ff989b AC |
5512 | break; |
5513 | default: | |
98deb0da | 5514 | throw_exception (e); |
0101ce28 | 5515 | } |
05ff989b AC |
5516 | default: |
5517 | if (!sals.nelts) | |
98deb0da | 5518 | return; |
0101ce28 | 5519 | } |
c3f6f71d JM |
5520 | |
5521 | /* Create a chain of things that always need to be cleaned up. */ | |
5522 | old_chain = make_cleanup (null_cleanup, 0); | |
5523 | ||
0101ce28 JJ |
5524 | if (!pending) |
5525 | { | |
5526 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5527 | make_cleanup (xfree, sals.sals); | |
5528 | ||
5529 | /* Cleanup the addr_string array but not its contents. */ | |
5530 | make_cleanup (xfree, addr_string); | |
5531 | } | |
c3f6f71d | 5532 | |
c3f6f71d JM |
5533 | /* ----------------------------- SNIP ----------------------------- |
5534 | Anything added to the cleanup chain beyond this point is assumed | |
5535 | to be part of a breakpoint. If the breakpoint create succeeds | |
5536 | then the memory is not reclaimed. */ | |
5537 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5538 | ||
5539 | /* Mark the contents of the addr_string for cleanup. These go on | |
5540 | the breakpoint_chain and only occure if the breakpoint create | |
5541 | fails. */ | |
5542 | for (i = 0; i < sals.nelts; i++) | |
5543 | { | |
5544 | if (addr_string[i] != NULL) | |
b8c9b27d | 5545 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5546 | } |
5547 | ||
5548 | /* Resolve all line numbers to PC's and verify that the addresses | |
5549 | are ok for the target. */ | |
0101ce28 JJ |
5550 | if (!pending) |
5551 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5552 | |
5553 | /* Verify that condition can be parsed, before setting any | |
5554 | breakpoints. Allocate a separate condition expression for each | |
5555 | breakpoint. */ | |
0101ce28 | 5556 | if (!pending) |
c3f6f71d | 5557 | { |
2f069f6f | 5558 | if (parse_condition_and_thread) |
72b2ff0e VP |
5559 | { |
5560 | /* Here we only parse 'arg' to separate condition | |
5561 | from thread number, so parsing in context of first | |
5562 | sal is OK. When setting the breakpoint we'll | |
5563 | re-parse it in context of each sal. */ | |
5564 | cond_string = NULL; | |
5565 | thread = -1; | |
5566 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5567 | if (cond_string) | |
5568 | make_cleanup (xfree, cond_string); | |
5569 | } | |
2f069f6f | 5570 | else |
72b2ff0e VP |
5571 | { |
5572 | /* Create a private copy of condition string. */ | |
5573 | if (cond_string) | |
5574 | { | |
5575 | cond_string = xstrdup (cond_string); | |
5576 | make_cleanup (xfree, cond_string); | |
5577 | } | |
5578 | } | |
018d34a4 | 5579 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5580 | hardwareflag ? bp_hardware_breakpoint |
5581 | : bp_breakpoint, | |
5582 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5583 | thread, ignore_count, ops, from_tty); |
c906108c | 5584 | } |
0101ce28 JJ |
5585 | else |
5586 | { | |
fe3f5fa8 | 5587 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5588 | struct breakpoint *b; |
5589 | ||
0101ce28 JJ |
5590 | make_cleanup (xfree, copy_arg); |
5591 | ||
0d381245 VP |
5592 | b = set_raw_breakpoint_without_location (hardwareflag |
5593 | ? bp_hardware_breakpoint | |
5594 | : bp_breakpoint); | |
0101ce28 JJ |
5595 | set_breakpoint_count (breakpoint_count + 1); |
5596 | b->number = breakpoint_count; | |
72b2ff0e | 5597 | b->thread = -1; |
018d34a4 | 5598 | b->addr_string = addr_string[0]; |
72b2ff0e | 5599 | b->cond_string = NULL; |
0101ce28 | 5600 | b->ignore_count = ignore_count; |
0101ce28 | 5601 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5602 | b->condition_not_parsed = 1; |
604133b5 | 5603 | b->ops = ops; |
74960c60 | 5604 | |
b60e7edf | 5605 | update_global_location_list (1); |
0101ce28 JJ |
5606 | mention (b); |
5607 | } | |
5608 | ||
c3f6f71d | 5609 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5610 | warning (_("Multiple breakpoints were set.\n" |
5611 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5612 | /* That's it. Discard the cleanups for data inserted into the |
5613 | breakpoint. */ | |
5614 | discard_cleanups (breakpoint_chain); | |
5615 | /* But cleanup everything else. */ | |
5616 | do_cleanups (old_chain); | |
5617 | } | |
c906108c | 5618 | |
72b2ff0e VP |
5619 | /* Set a breakpoint. |
5620 | ARG is a string describing breakpoint address, | |
5621 | condition, and thread. | |
5622 | FLAG specifies if a breakpoint is hardware on, | |
5623 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5624 | and BP_TEMPFLAG. */ | |
5625 | ||
98deb0da | 5626 | static void |
72b2ff0e | 5627 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5628 | { |
72b2ff0e VP |
5629 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5630 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5631 | |
98deb0da VP |
5632 | break_command_really (arg, |
5633 | NULL, 0, 1 /* parse arg */, | |
5634 | tempflag, hardwareflag, | |
5635 | 0 /* Ignore count */, | |
604133b5 AR |
5636 | pending_break_support, |
5637 | NULL /* breakpoint_ops */, | |
5638 | from_tty); | |
c906108c SS |
5639 | } |
5640 | ||
72b2ff0e | 5641 | |
98deb0da VP |
5642 | void |
5643 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5644 | int hardwareflag, int tempflag, |
ce43223b | 5645 | int thread, int ignore_count, |
98deb0da | 5646 | int pending) |
c3f6f71d | 5647 | { |
98deb0da VP |
5648 | break_command_really (address, condition, thread, |
5649 | 0 /* condition and thread are valid. */, | |
5650 | tempflag, hardwareflag, | |
5651 | ignore_count, | |
5652 | pending | |
5653 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5654 | NULL, 0); |
c3f6f71d JM |
5655 | } |
5656 | ||
6a048695 JB |
5657 | /* Adjust SAL to the first instruction past the function prologue. |
5658 | The end of the prologue is determined using the line table from | |
5659 | the debugging information. | |
5660 | ||
5661 | If SAL is already past the prologue, then do nothing. */ | |
5662 | ||
5663 | static void | |
5664 | skip_prologue_sal (struct symtab_and_line *sal) | |
5665 | { | |
5666 | struct symbol *sym = find_pc_function (sal->pc); | |
5667 | struct symtab_and_line start_sal; | |
5668 | ||
5669 | if (sym == NULL) | |
5670 | return; | |
5671 | ||
5672 | start_sal = find_function_start_sal (sym, 1); | |
5673 | if (sal->pc < start_sal.pc) | |
5674 | *sal = start_sal; | |
5675 | } | |
c3f6f71d | 5676 | |
c906108c SS |
5677 | /* Helper function for break_command_1 and disassemble_command. */ |
5678 | ||
5679 | void | |
fba45db2 | 5680 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5681 | { |
5682 | CORE_ADDR pc; | |
5683 | ||
5684 | if (sal->pc == 0 && sal->symtab != NULL) | |
5685 | { | |
5686 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5687 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5688 | sal->line, sal->symtab->filename); |
5689 | sal->pc = pc; | |
6a048695 JB |
5690 | |
5691 | /* If this SAL corresponds to a breakpoint inserted using | |
5692 | a line number, then skip the function prologue if necessary. */ | |
5693 | if (sal->explicit_line) | |
5694 | skip_prologue_sal (sal); | |
c906108c SS |
5695 | } |
5696 | ||
5697 | if (sal->section == 0 && sal->symtab != NULL) | |
5698 | { | |
5699 | struct blockvector *bv; | |
c5aa993b JM |
5700 | struct block *b; |
5701 | struct symbol *sym; | |
c906108c | 5702 | |
801e3a5b | 5703 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5704 | if (bv != NULL) |
5705 | { | |
c906108c SS |
5706 | sym = block_function (b); |
5707 | if (sym != NULL) | |
5708 | { | |
5709 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5710 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5711 | } | |
5712 | else | |
5713 | { | |
5714 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5715 | have to look harder. This case can be executed if we have |
5716 | line numbers but no functions (as can happen in assembly | |
5717 | source). */ | |
c906108c | 5718 | |
c5aa993b | 5719 | struct minimal_symbol *msym; |
c906108c SS |
5720 | |
5721 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5722 | if (msym) | |
5723 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5724 | } | |
5725 | } | |
5726 | } | |
5727 | } | |
5728 | ||
5729 | void | |
fba45db2 | 5730 | break_command (char *arg, int from_tty) |
c906108c | 5731 | { |
db107f19 | 5732 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5733 | } |
5734 | ||
c906108c | 5735 | void |
fba45db2 | 5736 | tbreak_command (char *arg, int from_tty) |
c906108c | 5737 | { |
db107f19 | 5738 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5739 | } |
5740 | ||
c906108c | 5741 | static void |
fba45db2 | 5742 | hbreak_command (char *arg, int from_tty) |
c906108c | 5743 | { |
db107f19 | 5744 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5745 | } |
5746 | ||
5747 | static void | |
fba45db2 | 5748 | thbreak_command (char *arg, int from_tty) |
c906108c | 5749 | { |
db107f19 | 5750 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5751 | } |
5752 | ||
5753 | static void | |
fba45db2 | 5754 | stop_command (char *arg, int from_tty) |
c906108c | 5755 | { |
a3f17187 | 5756 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5757 | Usage: stop in <function | address>\n\ |
a3f17187 | 5758 | stop at <line>\n")); |
c906108c SS |
5759 | } |
5760 | ||
5761 | static void | |
fba45db2 | 5762 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5763 | { |
5764 | int badInput = 0; | |
5765 | ||
c5aa993b | 5766 | if (arg == (char *) NULL) |
c906108c SS |
5767 | badInput = 1; |
5768 | else if (*arg != '*') | |
5769 | { | |
5770 | char *argptr = arg; | |
5771 | int hasColon = 0; | |
5772 | ||
53a5351d JM |
5773 | /* look for a ':'. If this is a line number specification, then |
5774 | say it is bad, otherwise, it should be an address or | |
5775 | function/method name */ | |
c906108c | 5776 | while (*argptr && !hasColon) |
c5aa993b JM |
5777 | { |
5778 | hasColon = (*argptr == ':'); | |
5779 | argptr++; | |
5780 | } | |
c906108c SS |
5781 | |
5782 | if (hasColon) | |
c5aa993b | 5783 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5784 | else |
c5aa993b | 5785 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5786 | } |
5787 | ||
5788 | if (badInput) | |
a3f17187 | 5789 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5790 | else |
db107f19 | 5791 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5792 | } |
5793 | ||
5794 | static void | |
fba45db2 | 5795 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5796 | { |
5797 | int badInput = 0; | |
5798 | ||
c5aa993b | 5799 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5800 | badInput = 1; |
5801 | else | |
5802 | { | |
5803 | char *argptr = arg; | |
5804 | int hasColon = 0; | |
5805 | ||
5806 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5807 | it is probably a line number. */ |
c906108c | 5808 | while (*argptr && !hasColon) |
c5aa993b JM |
5809 | { |
5810 | hasColon = (*argptr == ':'); | |
5811 | argptr++; | |
5812 | } | |
c906108c SS |
5813 | |
5814 | if (hasColon) | |
c5aa993b | 5815 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5816 | else |
c5aa993b | 5817 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5818 | } |
5819 | ||
5820 | if (badInput) | |
a3f17187 | 5821 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5822 | else |
db107f19 | 5823 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5824 | } |
5825 | ||
53a5351d JM |
5826 | /* accessflag: hw_write: watch write, |
5827 | hw_read: watch read, | |
5828 | hw_access: watch access (read or write) */ | |
c906108c | 5829 | static void |
fba45db2 | 5830 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5831 | { |
d983da9c | 5832 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5833 | struct symtab_and_line sal; |
5834 | struct expression *exp; | |
5835 | struct block *exp_valid_block; | |
5836 | struct value *val, *mark; | |
5837 | struct frame_info *frame; | |
5838 | struct frame_info *prev_frame = NULL; | |
5839 | char *exp_start = NULL; | |
5840 | char *exp_end = NULL; | |
37e4754d | 5841 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5842 | int toklen; |
5843 | char *cond_start = NULL; | |
5844 | char *cond_end = NULL; | |
5845 | struct expression *cond = NULL; | |
5846 | int i, other_type_used, target_resources_ok = 0; | |
5847 | enum bptype bp_type; | |
5848 | int mem_cnt = 0; | |
37e4754d | 5849 | int thread = -1; |
c906108c | 5850 | |
fe39c653 | 5851 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5852 | |
37e4754d LM |
5853 | /* Make sure that we actually have parameters to parse. */ |
5854 | if (arg != NULL && arg[0] != '\0') | |
5855 | { | |
5856 | toklen = strlen (arg); /* Size of argument list. */ | |
5857 | ||
5858 | /* Points tok to the end of the argument list. */ | |
5859 | tok = arg + toklen - 1; | |
5860 | ||
5861 | /* Go backwards in the parameters list. Skip the last parameter. | |
5862 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5863 | be the thread identifier. */ | |
5864 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5865 | tok--; | |
5866 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5867 | tok--; | |
5868 | ||
5869 | /* Points end_tok to the beginning of the last token. */ | |
5870 | id_tok_start = tok + 1; | |
5871 | ||
5872 | /* Go backwards in the parameters list. Skip one more parameter. | |
5873 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5874 | reach a "thread" token. */ | |
5875 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5876 | tok--; | |
5877 | ||
5878 | end_tok = tok; | |
5879 | ||
5880 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5881 | tok--; | |
5882 | ||
5883 | /* Move the pointer forward to skip the whitespace and | |
5884 | calculate the length of the token. */ | |
5885 | tok++; | |
5886 | toklen = end_tok - tok; | |
5887 | ||
5888 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5889 | { | |
5890 | /* At this point we've found a "thread" token, which means | |
5891 | the user is trying to set a watchpoint that triggers | |
5892 | only in a specific thread. */ | |
5893 | char *endp; | |
5894 | ||
5895 | /* Extract the thread ID from the next token. */ | |
5896 | thread = strtol (id_tok_start, &endp, 0); | |
5897 | ||
5898 | /* Check if the user provided a valid numeric value for the | |
5899 | thread ID. */ | |
5900 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5901 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5902 | ||
5903 | /* Check if the thread actually exists. */ | |
5904 | if (!valid_thread_id (thread)) | |
5905 | error (_("Unknown thread %d."), thread); | |
5906 | ||
5907 | /* Truncate the string and get rid of the thread <thread_num> | |
5908 | parameter before the parameter list is parsed by the | |
5909 | evaluate_expression() function. */ | |
5910 | *tok = '\0'; | |
5911 | } | |
5912 | } | |
5913 | ||
5914 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5915 | innermost_block = NULL; |
5916 | exp_start = arg; | |
5917 | exp = parse_exp_1 (&arg, 0, 0); | |
5918 | exp_end = arg; | |
5919 | exp_valid_block = innermost_block; | |
5920 | mark = value_mark (); | |
fa4727a6 DJ |
5921 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5922 | if (val != NULL) | |
5923 | release_value (val); | |
c906108c SS |
5924 | |
5925 | tok = arg; | |
5926 | while (*tok == ' ' || *tok == '\t') | |
5927 | tok++; | |
5928 | end_tok = tok; | |
5929 | ||
5930 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5931 | end_tok++; | |
5932 | ||
5933 | toklen = end_tok - tok; | |
5934 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5935 | { | |
5936 | tok = cond_start = end_tok + 1; | |
5937 | cond = parse_exp_1 (&tok, 0, 0); | |
5938 | cond_end = tok; | |
5939 | } | |
5940 | if (*tok) | |
8a3fe4f8 | 5941 | error (_("Junk at end of command.")); |
c906108c | 5942 | |
53a5351d | 5943 | if (accessflag == hw_read) |
c5aa993b | 5944 | bp_type = bp_read_watchpoint; |
53a5351d | 5945 | else if (accessflag == hw_access) |
c5aa993b JM |
5946 | bp_type = bp_access_watchpoint; |
5947 | else | |
5948 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5949 | |
5950 | mem_cnt = can_use_hardware_watchpoint (val); | |
5951 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5952 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5953 | if (mem_cnt != 0) |
5954 | { | |
5955 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5956 | target_resources_ok = |
5957 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5958 | other_type_used); | |
c5aa993b | 5959 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5960 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5961 | |
c5aa993b | 5962 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5963 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5964 | } |
c906108c | 5965 | |
4d28f7a8 KB |
5966 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5967 | watchpoint could not be set. */ | |
5968 | if (!mem_cnt || target_resources_ok <= 0) | |
5969 | bp_type = bp_watchpoint; | |
5970 | ||
d983da9c DJ |
5971 | frame = block_innermost_frame (exp_valid_block); |
5972 | if (frame) | |
5973 | prev_frame = get_prev_frame (frame); | |
5974 | else | |
5975 | prev_frame = NULL; | |
5976 | ||
5977 | /* If the expression is "local", then set up a "watchpoint scope" | |
5978 | breakpoint at the point where we've left the scope of the watchpoint | |
5979 | expression. Create the scope breakpoint before the watchpoint, so | |
5980 | that we will encounter it first in bpstat_stop_status. */ | |
5981 | if (innermost_block && prev_frame) | |
5982 | { | |
5983 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
5984 | bp_watchpoint_scope); | |
5985 | ||
5986 | scope_breakpoint->enable_state = bp_enabled; | |
5987 | ||
5988 | /* Automatically delete the breakpoint when it hits. */ | |
5989 | scope_breakpoint->disposition = disp_del; | |
5990 | ||
5991 | /* Only break in the proper frame (help with recursion). */ | |
5992 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
5993 | ||
5994 | /* Set the address at which we will stop. */ | |
5995 | scope_breakpoint->loc->requested_address | |
5996 | = get_frame_pc (prev_frame); | |
5997 | scope_breakpoint->loc->address | |
5998 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
5999 | scope_breakpoint->type); | |
6000 | } | |
6001 | ||
c906108c | 6002 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6003 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6004 | set_breakpoint_count (breakpoint_count + 1); |
6005 | b->number = breakpoint_count; | |
37e4754d | 6006 | b->thread = thread; |
b5de0fa7 | 6007 | b->disposition = disp_donttouch; |
c906108c SS |
6008 | b->exp = exp; |
6009 | b->exp_valid_block = exp_valid_block; | |
6010 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6011 | b->val = val; | |
fa4727a6 | 6012 | b->val_valid = 1; |
511a6cd4 | 6013 | b->loc->cond = cond; |
c906108c SS |
6014 | if (cond_start) |
6015 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6016 | else | |
6017 | b->cond_string = 0; | |
c5aa993b | 6018 | |
c906108c | 6019 | if (frame) |
d983da9c | 6020 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6021 | else |
35a487f1 | 6022 | b->watchpoint_frame = null_frame_id; |
c906108c | 6023 | |
d983da9c | 6024 | if (scope_breakpoint != NULL) |
c906108c | 6025 | { |
d983da9c DJ |
6026 | /* The scope breakpoint is related to the watchpoint. We will |
6027 | need to act on them together. */ | |
6028 | b->related_breakpoint = scope_breakpoint; | |
6029 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6030 | } |
d983da9c | 6031 | |
c906108c SS |
6032 | value_free_to_mark (mark); |
6033 | mention (b); | |
b60e7edf | 6034 | update_global_location_list (1); |
c906108c SS |
6035 | } |
6036 | ||
6037 | /* Return count of locations need to be watched and can be handled | |
6038 | in hardware. If the watchpoint can not be handled | |
6039 | in hardware return zero. */ | |
6040 | ||
c906108c | 6041 | static int |
fba45db2 | 6042 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6043 | { |
6044 | int found_memory_cnt = 0; | |
2e70b7b9 | 6045 | struct value *head = v; |
c906108c SS |
6046 | |
6047 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6048 | if (!can_use_hw_watchpoints) |
c906108c | 6049 | return 0; |
c5aa993b | 6050 | |
5c44784c JM |
6051 | /* Make sure that the value of the expression depends only upon |
6052 | memory contents, and values computed from them within GDB. If we | |
6053 | find any register references or function calls, we can't use a | |
6054 | hardware watchpoint. | |
6055 | ||
6056 | The idea here is that evaluating an expression generates a series | |
6057 | of values, one holding the value of every subexpression. (The | |
6058 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6059 | a*b+c.) GDB's values hold almost enough information to establish | |
6060 | the criteria given above --- they identify memory lvalues, | |
6061 | register lvalues, computed values, etcetera. So we can evaluate | |
6062 | the expression, and then scan the chain of values that leaves | |
6063 | behind to decide whether we can detect any possible change to the | |
6064 | expression's final value using only hardware watchpoints. | |
6065 | ||
6066 | However, I don't think that the values returned by inferior | |
6067 | function calls are special in any way. So this function may not | |
6068 | notice that an expression involving an inferior function call | |
6069 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6070 | for (; v; v = value_next (v)) |
c906108c | 6071 | { |
5c44784c | 6072 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6073 | { |
d69fe07e | 6074 | if (value_lazy (v)) |
5c44784c JM |
6075 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6076 | we either just used its address (e.g., `a' in `a.b') or | |
6077 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6078 | ; | |
53a5351d | 6079 | else |
5c44784c JM |
6080 | { |
6081 | /* Ahh, memory we actually used! Check if we can cover | |
6082 | it with hardware watchpoints. */ | |
df407dfe | 6083 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6084 | |
6085 | /* We only watch structs and arrays if user asked for it | |
6086 | explicitly, never if they just happen to appear in a | |
6087 | middle of some value chain. */ | |
6088 | if (v == head | |
6089 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6090 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6091 | { | |
df407dfe AC |
6092 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6093 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6094 | |
6095 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6096 | return 0; | |
6097 | else | |
6098 | found_memory_cnt++; | |
6099 | } | |
5c44784c | 6100 | } |
c5aa993b | 6101 | } |
5086187c AC |
6102 | else if (VALUE_LVAL (v) != not_lval |
6103 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6104 | return 0; /* ??? What does this represent? */ |
5086187c | 6105 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6106 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6107 | } |
6108 | ||
6109 | /* The expression itself looks suitable for using a hardware | |
6110 | watchpoint, but give the target machine a chance to reject it. */ | |
6111 | return found_memory_cnt; | |
6112 | } | |
6113 | ||
8b93c638 | 6114 | void |
fba45db2 | 6115 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6116 | { |
6117 | watch_command (arg, from_tty); | |
6118 | } | |
8926118c | 6119 | |
c5aa993b | 6120 | static void |
fba45db2 | 6121 | watch_command (char *arg, int from_tty) |
c906108c | 6122 | { |
53a5351d | 6123 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6124 | } |
6125 | ||
8b93c638 | 6126 | void |
fba45db2 | 6127 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6128 | { |
6129 | rwatch_command (arg, from_tty); | |
6130 | } | |
8926118c | 6131 | |
c5aa993b | 6132 | static void |
fba45db2 | 6133 | rwatch_command (char *arg, int from_tty) |
c906108c | 6134 | { |
53a5351d | 6135 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6136 | } |
6137 | ||
8b93c638 | 6138 | void |
fba45db2 | 6139 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6140 | { |
6141 | awatch_command (arg, from_tty); | |
6142 | } | |
8926118c | 6143 | |
c5aa993b | 6144 | static void |
fba45db2 | 6145 | awatch_command (char *arg, int from_tty) |
c906108c | 6146 | { |
53a5351d | 6147 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6148 | } |
c906108c | 6149 | \f |
c5aa993b | 6150 | |
43ff13b4 | 6151 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6152 | because it uses the mechanisms of breakpoints. */ |
6153 | ||
43ff13b4 JM |
6154 | /* This function is called by fetch_inferior_event via the |
6155 | cmd_continuation pointer, to complete the until command. It takes | |
6156 | care of cleaning up the temporary breakpoints set up by the until | |
6157 | command. */ | |
c2c6d25f | 6158 | static void |
f107f563 | 6159 | until_break_command_continuation (struct continuation_arg *arg, int error) |
43ff13b4 | 6160 | { |
f107f563 VP |
6161 | delete_breakpoint ((struct breakpoint *)(arg->data.pointer)); |
6162 | if (arg->next) | |
6163 | delete_breakpoint ((struct breakpoint *)(arg->next->data.pointer)); | |
43ff13b4 JM |
6164 | } |
6165 | ||
c906108c | 6166 | void |
ae66c1fc | 6167 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6168 | { |
6169 | struct symtabs_and_lines sals; | |
6170 | struct symtab_and_line sal; | |
206415a3 DJ |
6171 | struct frame_info *frame = get_selected_frame (NULL); |
6172 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6173 | struct breakpoint *breakpoint; |
f107f563 | 6174 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 6175 | struct cleanup *old_chain; |
0d06e24b | 6176 | struct continuation_arg *arg1; |
f107f563 | 6177 | struct continuation_arg *arg2; |
0d06e24b | 6178 | |
c906108c SS |
6179 | |
6180 | clear_proceed_status (); | |
6181 | ||
6182 | /* Set a breakpoint where the user wants it and at return from | |
6183 | this function */ | |
c5aa993b | 6184 | |
c906108c SS |
6185 | if (default_breakpoint_valid) |
6186 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6187 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6188 | else |
53a5351d | 6189 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6190 | 0, (char ***) NULL, NULL); |
c5aa993b | 6191 | |
c906108c | 6192 | if (sals.nelts != 1) |
8a3fe4f8 | 6193 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6194 | |
c906108c | 6195 | sal = sals.sals[0]; |
b8c9b27d | 6196 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6197 | |
c906108c | 6198 | if (*arg) |
8a3fe4f8 | 6199 | error (_("Junk at end of arguments.")); |
c5aa993b | 6200 | |
c906108c | 6201 | resolve_sal_pc (&sal); |
c5aa993b | 6202 | |
ae66c1fc EZ |
6203 | if (anywhere) |
6204 | /* If the user told us to continue until a specified location, | |
6205 | we don't specify a frame at which we need to stop. */ | |
6206 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6207 | else | |
6208 | /* Otherwise, specify the current frame, because we want to stop only | |
6209 | at the very same frame. */ | |
206415a3 | 6210 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6211 | bp_until); |
c5aa993b | 6212 | |
f107f563 | 6213 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6214 | |
ae66c1fc EZ |
6215 | /* Keep within the current frame, or in frames called by the current |
6216 | one. */ | |
c906108c SS |
6217 | if (prev_frame) |
6218 | { | |
30f7db39 AC |
6219 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6220 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6221 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6222 | bp_until); | |
6223 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6224 | } |
c5aa993b | 6225 | |
c906108c | 6226 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6227 | |
6228 | /* If we are running asynchronously, and proceed call above has actually | |
6229 | managed to start the target, arrange for breakpoints to be | |
6230 | deleted when the target stops. Otherwise, we're already stopped and | |
6231 | delete breakpoints via cleanup chain. */ | |
6232 | ||
8ea051c5 | 6233 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 VP |
6234 | { |
6235 | arg1 = | |
6236 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
6237 | arg1->next = NULL; | |
6238 | arg1->data.pointer = breakpoint; | |
6239 | ||
6240 | if (breakpoint2) | |
6241 | { | |
6242 | arg2 = (struct continuation_arg *) | |
6243 | xmalloc ( sizeof (struct continuation_arg)); | |
6244 | arg2->next = NULL; | |
6245 | arg2->data.pointer = breakpoint2; | |
6246 | arg1->next = arg2; | |
6247 | } | |
6248 | ||
6249 | discard_cleanups (old_chain); | |
6250 | add_continuation (until_break_command_continuation, arg1); | |
6251 | } | |
6252 | else | |
c5aa993b | 6253 | do_cleanups (old_chain); |
c906108c | 6254 | } |
ae66c1fc | 6255 | |
c906108c | 6256 | static void |
fba45db2 | 6257 | ep_skip_leading_whitespace (char **s) |
c906108c | 6258 | { |
c5aa993b JM |
6259 | if ((s == NULL) || (*s == NULL)) |
6260 | return; | |
6261 | while (isspace (**s)) | |
6262 | *s += 1; | |
c906108c | 6263 | } |
c5aa993b | 6264 | |
c906108c SS |
6265 | /* This function examines a string, and attempts to find a token |
6266 | that might be an event name in the leading characters. If a | |
6267 | possible match is found, a pointer to the last character of | |
6268 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 6269 | |
c906108c | 6270 | static char * |
fba45db2 | 6271 | ep_find_event_name_end (char *arg) |
c906108c | 6272 | { |
c5aa993b JM |
6273 | char *s = arg; |
6274 | char *event_name_end = NULL; | |
6275 | ||
c906108c SS |
6276 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
6277 | if (arg == NULL) | |
6278 | return NULL; | |
c5aa993b | 6279 | |
c906108c | 6280 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
6281 | Basically, we're looking for alphanumerics and underscores; |
6282 | anything else delimites the token. */ | |
c906108c SS |
6283 | while (*s != '\0') |
6284 | { | |
c5aa993b JM |
6285 | if (!isalnum (*s) && (*s != '_')) |
6286 | break; | |
c906108c SS |
6287 | event_name_end = s; |
6288 | s++; | |
6289 | } | |
c5aa993b | 6290 | |
c906108c SS |
6291 | return event_name_end; |
6292 | } | |
6293 | ||
c5aa993b | 6294 | |
c906108c SS |
6295 | /* This function attempts to parse an optional "if <cond>" clause |
6296 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6297 | |
c906108c SS |
6298 | Else, it returns a pointer to the condition string. (It does not |
6299 | attempt to evaluate the string against a particular block.) And, | |
6300 | it updates arg to point to the first character following the parsed | |
6301 | if clause in the arg string. */ | |
53a5351d | 6302 | |
c906108c | 6303 | static char * |
fba45db2 | 6304 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6305 | { |
c5aa993b JM |
6306 | char *cond_string; |
6307 | ||
6308 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6309 | return NULL; |
c5aa993b | 6310 | |
c906108c SS |
6311 | /* Skip the "if" keyword. */ |
6312 | (*arg) += 2; | |
c5aa993b | 6313 | |
c906108c SS |
6314 | /* Skip any extra leading whitespace, and record the start of the |
6315 | condition string. */ | |
6316 | ep_skip_leading_whitespace (arg); | |
6317 | cond_string = *arg; | |
c5aa993b | 6318 | |
c906108c SS |
6319 | /* Assume that the condition occupies the remainder of the arg string. */ |
6320 | (*arg) += strlen (cond_string); | |
c5aa993b | 6321 | |
c906108c SS |
6322 | return cond_string; |
6323 | } | |
c5aa993b | 6324 | |
c906108c SS |
6325 | /* This function attempts to parse an optional filename from the arg |
6326 | string. If one is not found, it returns NULL. | |
c5aa993b | 6327 | |
c906108c SS |
6328 | Else, it returns a pointer to the parsed filename. (This function |
6329 | makes no attempt to verify that a file of that name exists, or is | |
6330 | accessible.) And, it updates arg to point to the first character | |
6331 | following the parsed filename in the arg string. | |
c5aa993b | 6332 | |
c906108c SS |
6333 | Note that clients needing to preserve the returned filename for |
6334 | future access should copy it to their own buffers. */ | |
6335 | static char * | |
fba45db2 | 6336 | ep_parse_optional_filename (char **arg) |
c906108c | 6337 | { |
c5aa993b JM |
6338 | static char filename[1024]; |
6339 | char *arg_p = *arg; | |
6340 | int i; | |
6341 | char c; | |
6342 | ||
c906108c SS |
6343 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6344 | return NULL; | |
c5aa993b JM |
6345 | |
6346 | for (i = 0;; i++) | |
c906108c SS |
6347 | { |
6348 | c = *arg_p; | |
6349 | if (isspace (c)) | |
c5aa993b | 6350 | c = '\0'; |
c906108c SS |
6351 | filename[i] = c; |
6352 | if (c == '\0') | |
c5aa993b | 6353 | break; |
c906108c SS |
6354 | arg_p++; |
6355 | } | |
6356 | *arg = arg_p; | |
c5aa993b | 6357 | |
c906108c SS |
6358 | return filename; |
6359 | } | |
c5aa993b | 6360 | |
c906108c SS |
6361 | /* Commands to deal with catching events, such as signals, exceptions, |
6362 | process start/exit, etc. */ | |
c5aa993b JM |
6363 | |
6364 | typedef enum | |
6365 | { | |
6366 | catch_fork, catch_vfork | |
6367 | } | |
6368 | catch_fork_kind; | |
6369 | ||
c906108c | 6370 | static void |
fba45db2 KB |
6371 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6372 | int from_tty) | |
c906108c | 6373 | { |
c5aa993b JM |
6374 | char *cond_string = NULL; |
6375 | ||
c906108c | 6376 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6377 | |
c906108c | 6378 | /* The allowed syntax is: |
c5aa993b JM |
6379 | catch [v]fork |
6380 | catch [v]fork if <cond> | |
6381 | ||
c906108c SS |
6382 | First, check if there's an if clause. */ |
6383 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6384 | |
c906108c | 6385 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6386 | error (_("Junk at end of arguments.")); |
c5aa993b | 6387 | |
c906108c SS |
6388 | /* If this target supports it, create a fork or vfork catchpoint |
6389 | and enable reporting of such events. */ | |
c5aa993b JM |
6390 | switch (fork_kind) |
6391 | { | |
6392 | case catch_fork: | |
c906108c SS |
6393 | create_fork_event_catchpoint (tempflag, cond_string); |
6394 | break; | |
c5aa993b | 6395 | case catch_vfork: |
c906108c SS |
6396 | create_vfork_event_catchpoint (tempflag, cond_string); |
6397 | break; | |
c5aa993b | 6398 | default: |
8a3fe4f8 | 6399 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6400 | break; |
c5aa993b | 6401 | } |
c906108c SS |
6402 | } |
6403 | ||
6404 | static void | |
fba45db2 | 6405 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6406 | { |
c5aa993b | 6407 | char *cond_string = NULL; |
c906108c SS |
6408 | |
6409 | ep_skip_leading_whitespace (&arg); | |
6410 | ||
6411 | /* The allowed syntax is: | |
c5aa993b JM |
6412 | catch exec |
6413 | catch exec if <cond> | |
c906108c SS |
6414 | |
6415 | First, check if there's an if clause. */ | |
6416 | cond_string = ep_parse_optional_if_clause (&arg); | |
6417 | ||
6418 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6419 | error (_("Junk at end of arguments.")); |
c906108c SS |
6420 | |
6421 | /* If this target supports it, create an exec catchpoint | |
6422 | and enable reporting of such events. */ | |
6423 | create_exec_event_catchpoint (tempflag, cond_string); | |
6424 | } | |
c5aa993b | 6425 | |
c906108c | 6426 | static void |
fba45db2 | 6427 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6428 | { |
c5aa993b JM |
6429 | char *dll_pathname = NULL; |
6430 | char *cond_string = NULL; | |
6431 | ||
c906108c | 6432 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6433 | |
c906108c | 6434 | /* The allowed syntax is: |
c5aa993b JM |
6435 | catch load |
6436 | catch load if <cond> | |
6437 | catch load <filename> | |
6438 | catch load <filename> if <cond> | |
6439 | ||
c906108c SS |
6440 | The user is not allowed to specify the <filename> after an |
6441 | if clause. | |
c5aa993b | 6442 | |
c906108c | 6443 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6444 | |
c906108c SS |
6445 | First, check if there's an if clause. If so, then there |
6446 | cannot be a filename. */ | |
6447 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6448 | |
c906108c SS |
6449 | /* If there was an if clause, then there cannot be a filename. |
6450 | Else, there might be a filename and an if clause. */ | |
6451 | if (cond_string == NULL) | |
6452 | { | |
6453 | dll_pathname = ep_parse_optional_filename (&arg); | |
6454 | ep_skip_leading_whitespace (&arg); | |
6455 | cond_string = ep_parse_optional_if_clause (&arg); | |
6456 | } | |
c5aa993b | 6457 | |
c906108c | 6458 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6459 | error (_("Junk at end of arguments.")); |
c5aa993b | 6460 | |
c906108c SS |
6461 | /* Create a load breakpoint that only triggers when a load of |
6462 | the specified dll (or any dll, if no pathname was specified) | |
6463 | occurs. */ | |
39f77062 | 6464 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6465 | dll_pathname, cond_string); |
c906108c | 6466 | } |
c5aa993b | 6467 | |
c906108c | 6468 | static void |
fba45db2 | 6469 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6470 | { |
c5aa993b JM |
6471 | char *dll_pathname = NULL; |
6472 | char *cond_string = NULL; | |
6473 | ||
c906108c | 6474 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6475 | |
c906108c | 6476 | /* The allowed syntax is: |
c5aa993b JM |
6477 | catch unload |
6478 | catch unload if <cond> | |
6479 | catch unload <filename> | |
6480 | catch unload <filename> if <cond> | |
6481 | ||
c906108c SS |
6482 | The user is not allowed to specify the <filename> after an |
6483 | if clause. | |
c5aa993b | 6484 | |
c906108c | 6485 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6486 | |
c906108c SS |
6487 | First, check if there's an if clause. If so, then there |
6488 | cannot be a filename. */ | |
6489 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6490 | |
c906108c SS |
6491 | /* If there was an if clause, then there cannot be a filename. |
6492 | Else, there might be a filename and an if clause. */ | |
6493 | if (cond_string == NULL) | |
6494 | { | |
6495 | dll_pathname = ep_parse_optional_filename (&arg); | |
6496 | ep_skip_leading_whitespace (&arg); | |
6497 | cond_string = ep_parse_optional_if_clause (&arg); | |
6498 | } | |
c5aa993b | 6499 | |
c906108c | 6500 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6501 | error (_("Junk at end of arguments.")); |
c5aa993b | 6502 | |
c906108c SS |
6503 | /* Create an unload breakpoint that only triggers when an unload of |
6504 | the specified dll (or any dll, if no pathname was specified) | |
6505 | occurs. */ | |
39f77062 | 6506 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6507 | dll_pathname, cond_string); |
c906108c | 6508 | } |
c906108c | 6509 | |
3086aeae DJ |
6510 | static enum print_stop_action |
6511 | print_exception_catchpoint (struct breakpoint *b) | |
6512 | { | |
ade92717 | 6513 | int bp_temp, bp_throw; |
3086aeae | 6514 | |
ade92717 | 6515 | annotate_catchpoint (b->number); |
3086aeae | 6516 | |
ade92717 AR |
6517 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6518 | if (b->loc->address != b->loc->requested_address) | |
6519 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6520 | b->loc->address, | |
6521 | b->number, 1); | |
6522 | bp_temp = b->loc->owner->disposition == disp_del; | |
6523 | ui_out_text (uiout, | |
6524 | bp_temp ? "Temporary catchpoint " | |
6525 | : "Catchpoint "); | |
6526 | if (!ui_out_is_mi_like_p (uiout)) | |
6527 | ui_out_field_int (uiout, "bkptno", b->number); | |
6528 | ui_out_text (uiout, | |
c0b37c48 AR |
6529 | bp_throw ? " (exception thrown), " |
6530 | : " (exception caught), "); | |
ade92717 AR |
6531 | if (ui_out_is_mi_like_p (uiout)) |
6532 | { | |
6533 | ui_out_field_string (uiout, "reason", | |
6534 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6535 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6536 | ui_out_field_int (uiout, "bkptno", b->number); | |
6537 | } | |
3086aeae DJ |
6538 | return PRINT_SRC_AND_LOC; |
6539 | } | |
6540 | ||
6541 | static void | |
6542 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6543 | { | |
6544 | if (addressprint) | |
6545 | { | |
6546 | annotate_field (4); | |
604133b5 AR |
6547 | if (b->loc == NULL || b->loc->shlib_disabled) |
6548 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6549 | else | |
6550 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6551 | } |
6552 | annotate_field (5); | |
604133b5 AR |
6553 | if (b->loc) |
6554 | *last_addr = b->loc->address; | |
3086aeae DJ |
6555 | if (strstr (b->addr_string, "throw") != NULL) |
6556 | ui_out_field_string (uiout, "what", "exception throw"); | |
6557 | else | |
6558 | ui_out_field_string (uiout, "what", "exception catch"); | |
6559 | } | |
6560 | ||
6561 | static void | |
6562 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6563 | { | |
ade92717 AR |
6564 | int bp_temp; |
6565 | int bp_throw; | |
6566 | ||
6567 | bp_temp = b->loc->owner->disposition == disp_del; | |
6568 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6569 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6570 | : _("Catchpoint ")); | |
6571 | ui_out_field_int (uiout, "bkptno", b->number); | |
6572 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6573 | : _(" (catch)")); | |
3086aeae DJ |
6574 | } |
6575 | ||
6576 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6577 | print_exception_catchpoint, | |
6578 | print_one_exception_catchpoint, | |
6579 | print_mention_exception_catchpoint | |
6580 | }; | |
6581 | ||
6582 | static int | |
6583 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6584 | enum exception_event_kind ex_event, int from_tty) | |
6585 | { | |
604133b5 AR |
6586 | char *trigger_func_name; |
6587 | ||
3086aeae | 6588 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6589 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6590 | else |
604133b5 | 6591 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6592 | |
604133b5 AR |
6593 | break_command_really (trigger_func_name, cond_string, -1, |
6594 | 0 /* condition and thread are valid. */, | |
ade92717 | 6595 | tempflag, 0, |
604133b5 AR |
6596 | 0, |
6597 | AUTO_BOOLEAN_TRUE /* pending */, | |
6598 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6599 | |
3086aeae DJ |
6600 | return 1; |
6601 | } | |
6602 | ||
c5aa993b | 6603 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6604 | |
6605 | static void | |
fba45db2 KB |
6606 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6607 | int tempflag, int from_tty) | |
c906108c | 6608 | { |
c5aa993b JM |
6609 | char *cond_string = NULL; |
6610 | struct symtab_and_line *sal = NULL; | |
6611 | ||
c906108c | 6612 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6613 | |
c906108c SS |
6614 | cond_string = ep_parse_optional_if_clause (&arg); |
6615 | ||
6616 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6617 | error (_("Junk at end of arguments.")); |
c906108c SS |
6618 | |
6619 | if ((ex_event != EX_EVENT_THROW) && | |
6620 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6621 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6622 | |
3086aeae DJ |
6623 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6624 | return; | |
6625 | ||
8a3fe4f8 | 6626 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6627 | } |
6628 | ||
f7f9143b JB |
6629 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6630 | ||
6631 | static void | |
6632 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6633 | char *addr_string, | |
6634 | char *exp_string, | |
6635 | char *cond_string, | |
6636 | struct expression *cond, | |
6637 | struct breakpoint_ops *ops, | |
6638 | int tempflag, | |
6639 | int from_tty) | |
6640 | { | |
6641 | struct breakpoint *b; | |
6642 | ||
6643 | if (from_tty) | |
6644 | { | |
6645 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6646 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6647 | version for exception catchpoints, because two catchpoints | |
6648 | used for different exception names will use the same address. | |
6649 | In this case, a "breakpoint ... also set at..." warning is | |
6650 | unproductive. Besides. the warning phrasing is also a bit | |
6651 | inapropriate, we should use the word catchpoint, and tell | |
6652 | the user what type of catchpoint it is. The above is good | |
6653 | enough for now, though. */ | |
6654 | } | |
6655 | ||
6656 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6657 | set_breakpoint_count (breakpoint_count + 1); | |
6658 | ||
6659 | b->enable_state = bp_enabled; | |
6660 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6661 | b->number = breakpoint_count; | |
6662 | b->ignore_count = 0; | |
511a6cd4 | 6663 | b->loc->cond = cond; |
f7f9143b JB |
6664 | b->addr_string = addr_string; |
6665 | b->language = language_ada; | |
6666 | b->cond_string = cond_string; | |
6667 | b->exp_string = exp_string; | |
6668 | b->thread = -1; | |
6669 | b->ops = ops; | |
f7f9143b JB |
6670 | |
6671 | mention (b); | |
b60e7edf | 6672 | update_global_location_list (1); |
f7f9143b JB |
6673 | } |
6674 | ||
6675 | /* Implement the "catch exception" command. */ | |
6676 | ||
6677 | static void | |
6678 | catch_ada_exception_command (char *arg, int tempflag, int from_tty) | |
6679 | { | |
6680 | struct symtab_and_line sal; | |
6681 | enum bptype type; | |
6682 | char *addr_string = NULL; | |
6683 | char *exp_string = NULL; | |
6684 | char *cond_string = NULL; | |
6685 | struct expression *cond = NULL; | |
6686 | struct breakpoint_ops *ops = NULL; | |
6687 | ||
6688 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, | |
6689 | &cond_string, &cond, &ops); | |
6690 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6691 | cond_string, cond, ops, tempflag, | |
6692 | from_tty); | |
6693 | } | |
6694 | ||
6695 | /* Implement the "catch assert" command. */ | |
6696 | ||
6697 | static void | |
6698 | catch_assert_command (char *arg, int tempflag, int from_tty) | |
6699 | { | |
6700 | struct symtab_and_line sal; | |
6701 | char *addr_string = NULL; | |
6702 | struct breakpoint_ops *ops = NULL; | |
6703 | ||
6704 | sal = ada_decode_assert_location (arg, &addr_string, &ops); | |
6705 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6706 | tempflag, from_tty); | |
6707 | } | |
6708 | ||
c906108c | 6709 | static void |
fba45db2 | 6710 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6711 | { |
c5aa993b | 6712 | |
c906108c SS |
6713 | /* The first argument may be an event name, such as "start" or "load". |
6714 | If so, then handle it as such. If it doesn't match an event name, | |
6715 | then attempt to interpret it as an exception name. (This latter is | |
6716 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6717 | |
c906108c | 6718 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6719 | char *arg1_start = arg; |
6720 | char *arg1_end; | |
6721 | int arg1_length; | |
6722 | ||
c906108c SS |
6723 | if (arg1_start == NULL) |
6724 | { | |
c5aa993b | 6725 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6726 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6727 | /* return; */ | |
c5aa993b | 6728 | /* Now, this is not allowed */ |
8a3fe4f8 | 6729 | error (_("Catch requires an event name.")); |
c906108c SS |
6730 | |
6731 | } | |
6732 | arg1_end = ep_find_event_name_end (arg1_start); | |
6733 | if (arg1_end == NULL) | |
8a3fe4f8 | 6734 | error (_("catch requires an event")); |
c906108c | 6735 | arg1_length = arg1_end + 1 - arg1_start; |
c5aa993b | 6736 | |
c906108c SS |
6737 | /* Try to match what we found against known event names. */ |
6738 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6739 | { | |
8a3fe4f8 | 6740 | error (_("Catch of signal not yet implemented")); |
c906108c SS |
6741 | } |
6742 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6743 | { | |
53a5351d JM |
6744 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6745 | tempflag, from_tty); | |
c906108c SS |
6746 | } |
6747 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6748 | { | |
53a5351d JM |
6749 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6750 | tempflag, from_tty); | |
c906108c SS |
6751 | } |
6752 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6753 | { | |
8a3fe4f8 | 6754 | error (_("Catch of thread_start not yet implemented")); |
c906108c SS |
6755 | } |
6756 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6757 | { | |
8a3fe4f8 | 6758 | error (_("Catch of thread_exit not yet implemented")); |
c906108c SS |
6759 | } |
6760 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6761 | { | |
8a3fe4f8 | 6762 | error (_("Catch of thread_join not yet implemented")); |
c906108c SS |
6763 | } |
6764 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6765 | { | |
8a3fe4f8 | 6766 | error (_("Catch of start not yet implemented")); |
c906108c SS |
6767 | } |
6768 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6769 | { | |
8a3fe4f8 | 6770 | error (_("Catch of exit not yet implemented")); |
c906108c SS |
6771 | } |
6772 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6773 | { | |
c5aa993b | 6774 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6775 | } |
6776 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6777 | { | |
c5aa993b | 6778 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6779 | } |
6780 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6781 | { | |
c5aa993b | 6782 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6783 | } |
6784 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6785 | { | |
c5aa993b | 6786 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6787 | } |
6788 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6789 | { | |
c5aa993b | 6790 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6791 | } |
6792 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6793 | { | |
8a3fe4f8 | 6794 | error (_("Catch of stop not yet implemented")); |
c906108c | 6795 | } |
f7f9143b JB |
6796 | else if (strncmp (arg1_start, "exception", arg1_length) == 0) |
6797 | { | |
6798 | catch_ada_exception_command (arg1_end + 1, tempflag, from_tty); | |
6799 | } | |
6800 | ||
6801 | else if (strncmp (arg1_start, "assert", arg1_length) == 0) | |
6802 | { | |
6803 | catch_assert_command (arg1_end + 1, tempflag, from_tty); | |
6804 | } | |
c5aa993b | 6805 | |
c906108c SS |
6806 | /* This doesn't appear to be an event name */ |
6807 | ||
6808 | else | |
6809 | { | |
6810 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6811 | as the name of an exception */ |
c906108c | 6812 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6813 | /* Now this is not allowed */ |
8a3fe4f8 | 6814 | error (_("Unknown event kind specified for catch")); |
c906108c SS |
6815 | |
6816 | } | |
6817 | } | |
6818 | ||
c906108c | 6819 | static void |
fba45db2 | 6820 | catch_command (char *arg, int from_tty) |
c906108c SS |
6821 | { |
6822 | catch_command_1 (arg, 0, from_tty); | |
6823 | } | |
6824 | \f | |
6825 | ||
6826 | static void | |
fba45db2 | 6827 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6828 | { |
6829 | catch_command_1 (arg, 1, from_tty); | |
6830 | } | |
6831 | ||
80f8a6eb | 6832 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6833 | |
6834 | static void | |
fba45db2 | 6835 | clear_command (char *arg, int from_tty) |
c906108c | 6836 | { |
d6e956e5 VP |
6837 | struct breakpoint *b; |
6838 | VEC(breakpoint_p) *found = 0; | |
6839 | int ix; | |
c906108c SS |
6840 | int default_match; |
6841 | struct symtabs_and_lines sals; | |
6842 | struct symtab_and_line sal; | |
c906108c SS |
6843 | int i; |
6844 | ||
6845 | if (arg) | |
6846 | { | |
6847 | sals = decode_line_spec (arg, 1); | |
6848 | default_match = 0; | |
6849 | } | |
6850 | else | |
6851 | { | |
c5aa993b | 6852 | sals.sals = (struct symtab_and_line *) |
c906108c | 6853 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6854 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6855 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6856 | sal.line = default_breakpoint_line; |
6857 | sal.symtab = default_breakpoint_symtab; | |
6858 | sal.pc = default_breakpoint_address; | |
6859 | if (sal.symtab == 0) | |
8a3fe4f8 | 6860 | error (_("No source file specified.")); |
c906108c SS |
6861 | |
6862 | sals.sals[0] = sal; | |
6863 | sals.nelts = 1; | |
6864 | ||
6865 | default_match = 1; | |
6866 | } | |
6867 | ||
ed0616c6 VP |
6868 | /* We don't call resolve_sal_pc here. That's not |
6869 | as bad as it seems, because all existing breakpoints | |
6870 | typically have both file/line and pc set. So, if | |
6871 | clear is given file/line, we can match this to existing | |
6872 | breakpoint without obtaining pc at all. | |
6873 | ||
6874 | We only support clearing given the address explicitly | |
6875 | present in breakpoint table. Say, we've set breakpoint | |
6876 | at file:line. There were several PC values for that file:line, | |
6877 | due to optimization, all in one block. | |
6878 | We've picked one PC value. If "clear" is issued with another | |
6879 | PC corresponding to the same file:line, the breakpoint won't | |
6880 | be cleared. We probably can still clear the breakpoint, but | |
6881 | since the other PC value is never presented to user, user | |
6882 | can only find it by guessing, and it does not seem important | |
6883 | to support that. */ | |
6884 | ||
c906108c | 6885 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6886 | to it. Do it in two passes, solely to preserve the current |
6887 | behavior that from_tty is forced true if we delete more than | |
6888 | one breakpoint. */ | |
c906108c | 6889 | |
80f8a6eb | 6890 | found = NULL; |
c906108c SS |
6891 | for (i = 0; i < sals.nelts; i++) |
6892 | { | |
6893 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6894 | If line given (pc == 0), clear all bpts on specified line. |
6895 | If defaulting, clear all bpts on default line | |
c906108c | 6896 | or at default pc. |
c5aa993b JM |
6897 | |
6898 | defaulting sal.pc != 0 tests to do | |
6899 | ||
6900 | 0 1 pc | |
6901 | 1 1 pc _and_ line | |
6902 | 0 0 line | |
6903 | 1 0 <can't happen> */ | |
c906108c SS |
6904 | |
6905 | sal = sals.sals[i]; | |
c906108c | 6906 | |
d6e956e5 VP |
6907 | /* Find all matching breakpoints and add them to |
6908 | 'found'. */ | |
6909 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6910 | { |
0d381245 | 6911 | int match = 0; |
80f8a6eb MS |
6912 | /* Are we going to delete b? */ |
6913 | if (b->type != bp_none | |
6914 | && b->type != bp_watchpoint | |
6915 | && b->type != bp_hardware_watchpoint | |
6916 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6917 | && b->type != bp_access_watchpoint) |
6918 | { | |
6919 | struct bp_location *loc = b->loc; | |
6920 | for (; loc; loc = loc->next) | |
6921 | { | |
6922 | int pc_match = sal.pc | |
6923 | && (loc->address == sal.pc) | |
6924 | && (!section_is_overlay (loc->section) | |
6925 | || loc->section == sal.section); | |
6926 | int line_match = ((default_match || (0 == sal.pc)) | |
6927 | && b->source_file != NULL | |
6928 | && sal.symtab != NULL | |
6929 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6930 | && b->line_number == sal.line); | |
6931 | if (pc_match || line_match) | |
6932 | { | |
6933 | match = 1; | |
6934 | break; | |
6935 | } | |
6936 | } | |
6937 | } | |
6938 | ||
6939 | if (match) | |
d6e956e5 | 6940 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6941 | } |
80f8a6eb MS |
6942 | } |
6943 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6944 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6945 | { |
6946 | if (arg) | |
8a3fe4f8 | 6947 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6948 | else |
8a3fe4f8 | 6949 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6950 | } |
c906108c | 6951 | |
d6e956e5 | 6952 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6953 | from_tty = 1; /* Always report if deleted more than one */ |
6954 | if (from_tty) | |
a3f17187 | 6955 | { |
d6e956e5 | 6956 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6957 | printf_unfiltered (_("Deleted breakpoint ")); |
6958 | else | |
6959 | printf_unfiltered (_("Deleted breakpoints ")); | |
6960 | } | |
80f8a6eb | 6961 | breakpoints_changed (); |
d6e956e5 VP |
6962 | |
6963 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6964 | { |
c5aa993b | 6965 | if (from_tty) |
d6e956e5 VP |
6966 | printf_unfiltered ("%d ", b->number); |
6967 | delete_breakpoint (b); | |
c906108c | 6968 | } |
80f8a6eb MS |
6969 | if (from_tty) |
6970 | putchar_unfiltered ('\n'); | |
c906108c SS |
6971 | } |
6972 | \f | |
6973 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6974 | all breakpoints that are marked for deletion, whether hit or not. | |
6975 | This is called after any breakpoint is hit, or after errors. */ | |
6976 | ||
6977 | void | |
fba45db2 | 6978 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6979 | { |
6980 | struct breakpoint *b, *temp; | |
6981 | ||
6982 | for (; bs; bs = bs->next) | |
20874c92 VP |
6983 | if (bs->breakpoint_at |
6984 | && bs->breakpoint_at->owner | |
6985 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 6986 | && bs->stop) |
4f8d1dc6 | 6987 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6988 | |
6989 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6990 | { |
b5de0fa7 | 6991 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6992 | delete_breakpoint (b); |
6993 | } | |
c906108c SS |
6994 | } |
6995 | ||
b60e7edf PA |
6996 | /* If SHOULD_INSERT is true, do not insert any breakpoint locations |
6997 | into the inferior, only remove already-inserted locations that no | |
6998 | longer should be inserted. Functions that delete a breakpoint or | |
6999 | breakpoints should pass false, so that deleting a breakpoint | |
7000 | doesn't have the side effect of inserting the locations of other | |
7001 | breakpoints that are marked not-inserted, but should_be_inserted | |
7002 | returns true on them. | |
7003 | ||
7004 | This behaviour is useful is situations close to tear-down -- e.g., | |
7005 | after an exec, while the target still has execution, but breakpoint | |
7006 | shadows of the previous executable image should *NOT* be restored | |
7007 | to the new image; or before detaching, where the target still has | |
7008 | execution and wants to delete breakpoints from GDB's lists, and all | |
7009 | breakpoints had already been removed from the inferior. */ | |
7010 | ||
0d381245 | 7011 | static void |
b60e7edf | 7012 | update_global_location_list (int should_insert) |
0d381245 | 7013 | { |
74960c60 VP |
7014 | struct breakpoint *b; |
7015 | struct bp_location **next = &bp_location_chain; | |
7016 | struct bp_location *loc; | |
7017 | struct bp_location *loc2; | |
7018 | struct gdb_exception e; | |
7019 | VEC(bp_location_p) *old_locations = NULL; | |
7020 | int ret; | |
7021 | int ix; | |
7022 | ||
7023 | /* Store old locations for future reference. */ | |
7024 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7025 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7026 | |
74960c60 VP |
7027 | bp_location_chain = NULL; |
7028 | ALL_BREAKPOINTS (b) | |
0d381245 | 7029 | { |
74960c60 | 7030 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7031 | { |
74960c60 VP |
7032 | *next = loc; |
7033 | next = &(loc->global_next); | |
7034 | *next = NULL; | |
0d381245 | 7035 | } |
74960c60 VP |
7036 | } |
7037 | ||
7038 | /* Identify bp_location instances that are no longer present in the new | |
7039 | list, and therefore should be freed. Note that it's not necessary that | |
7040 | those locations should be removed from inferior -- if there's another | |
7041 | location at the same address (previously marked as duplicate), | |
7042 | we don't need to remove/insert the location. */ | |
7043 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7044 | { | |
7045 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7046 | have to free it. */ | |
7047 | int found_object = 0; | |
20874c92 VP |
7048 | /* Tells if the location should remain inserted in the target. */ |
7049 | int keep_in_target = 0; | |
7050 | int removed = 0; | |
74960c60 VP |
7051 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7052 | if (loc2 == loc) | |
7053 | { | |
7054 | found_object = 1; | |
7055 | break; | |
7056 | } | |
7057 | ||
7058 | /* If this location is no longer present, and inserted, look if there's | |
7059 | maybe a new location at the same address. If so, mark that one | |
7060 | inserted, and don't remove this one. This is needed so that we | |
7061 | don't have a time window where a breakpoint at certain location is not | |
7062 | inserted. */ | |
7063 | ||
7064 | if (loc->inserted) | |
0d381245 | 7065 | { |
74960c60 | 7066 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7067 | |
7068 | if (found_object && should_be_inserted (loc)) | |
7069 | { | |
7070 | /* The location is still present in the location list, and still | |
7071 | should be inserted. Don't do anything. */ | |
20874c92 | 7072 | keep_in_target = 1; |
74960c60 VP |
7073 | } |
7074 | else | |
7075 | { | |
7076 | /* The location is either no longer present, or got disabled. | |
7077 | See if there's another location at the same address, in which | |
7078 | case we don't need to remove this one from the target. */ | |
7079 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7080 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7081 | { | |
7082 | /* For the sake of should_insert_location. The | |
7083 | call to check_duplicates will fix up this later. */ | |
7084 | loc2->duplicate = 0; | |
7085 | if (should_be_inserted (loc2) | |
7086 | && loc2 != loc && loc2->address == loc->address) | |
7087 | { | |
7088 | loc2->inserted = 1; | |
7089 | loc2->target_info = loc->target_info; | |
20874c92 | 7090 | keep_in_target = 1; |
74960c60 VP |
7091 | break; |
7092 | } | |
7093 | } | |
7094 | } | |
7095 | ||
20874c92 VP |
7096 | if (!keep_in_target) |
7097 | { | |
7098 | if (remove_breakpoint (loc, mark_uninserted)) | |
7099 | { | |
7100 | /* This is just about all we can do. We could keep this | |
7101 | location on the global list, and try to remove it next | |
7102 | time, but there's no particular reason why we will | |
7103 | succeed next time. | |
7104 | ||
7105 | Note that at this point, loc->owner is still valid, | |
7106 | as delete_breakpoint frees the breakpoint only | |
7107 | after calling us. */ | |
7108 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7109 | loc->owner->number); | |
7110 | } | |
7111 | removed = 1; | |
7112 | } | |
0d381245 | 7113 | } |
74960c60 VP |
7114 | |
7115 | if (!found_object) | |
20874c92 VP |
7116 | { |
7117 | if (removed) | |
7118 | { | |
7119 | /* This location was removed from the targets. In non-stop mode, | |
7120 | a race condition is possible where we've removed a breakpoint, | |
7121 | but stop events for that breakpoint are already queued and will | |
7122 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7123 | we keep this breakpoint location for a bit, and will retire it | |
7124 | after we see 3 * thread_count events. | |
7125 | The theory here is that reporting of events should, | |
7126 | "on the average", be fair, so after that many event we'll see | |
7127 | events from all threads that have anything of interest, and no | |
7128 | longer need to keep this breakpoint. This is just a | |
7129 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, | |
7130 | which is usability issue, but not a correctness problem. */ | |
7131 | loc->events_till_retirement = 3 * (thread_count () + 1); | |
7132 | loc->owner = NULL; | |
7133 | } | |
7134 | ||
7135 | free_bp_location (loc); | |
7136 | } | |
74960c60 VP |
7137 | } |
7138 | ||
7139 | ALL_BREAKPOINTS (b) | |
7140 | { | |
7141 | check_duplicates (b); | |
0d381245 | 7142 | } |
74960c60 | 7143 | |
b60e7edf | 7144 | if (always_inserted_mode && should_insert && target_has_execution) |
74960c60 VP |
7145 | insert_breakpoint_locations (); |
7146 | } | |
7147 | ||
20874c92 VP |
7148 | void |
7149 | breakpoint_retire_moribund (void) | |
7150 | { | |
7151 | struct bp_location *loc; | |
7152 | int ix; | |
7153 | ||
7154 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7155 | if (--(loc->events_till_retirement) == 0) | |
7156 | { | |
7157 | free_bp_location (loc); | |
7158 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7159 | --ix; | |
7160 | } | |
7161 | } | |
7162 | ||
74960c60 | 7163 | static void |
b60e7edf | 7164 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7165 | { |
7166 | struct gdb_exception e; | |
7167 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7168 | update_global_location_list (inserting); |
0d381245 VP |
7169 | } |
7170 | ||
a474d7c2 PA |
7171 | /* Clear BPT from a BPS. */ |
7172 | static void | |
7173 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7174 | { | |
7175 | bpstat bs; | |
7176 | for (bs = bps; bs; bs = bs->next) | |
7177 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7178 | { | |
7179 | bs->breakpoint_at = NULL; | |
7180 | bs->old_val = NULL; | |
7181 | /* bs->commands will be freed later. */ | |
7182 | } | |
7183 | } | |
7184 | ||
7185 | /* Callback for iterate_over_threads. */ | |
7186 | static int | |
7187 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7188 | { | |
7189 | struct breakpoint *bpt = data; | |
7190 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7191 | return 0; | |
7192 | } | |
7193 | ||
53a5351d JM |
7194 | /* Delete a breakpoint and clean up all traces of it in the data |
7195 | structures. */ | |
c906108c SS |
7196 | |
7197 | void | |
fba45db2 | 7198 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7199 | { |
52f0bd74 | 7200 | struct breakpoint *b; |
74960c60 | 7201 | struct bp_location *loc, *next; |
c906108c | 7202 | |
8a3fe4f8 | 7203 | gdb_assert (bpt != NULL); |
c906108c SS |
7204 | |
7205 | /* Has this bp already been deleted? This can happen because multiple | |
7206 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7207 | ||
7208 | One example of this happening is a watchpoint's scope bp. When the | |
7209 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7210 | delete it. We also delete its scope bp. But the scope bp is marked | |
7211 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7212 | checked for auto-deleting bp's, which are deleted. | |
7213 | ||
7214 | A real solution to this problem might involve reference counts in bp's, | |
7215 | and/or giving them pointers back to their referencing bpstat's, and | |
7216 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7217 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7218 | if (bpt->type == bp_none) |
7219 | return; | |
7220 | ||
9a4105ab AC |
7221 | if (deprecated_delete_breakpoint_hook) |
7222 | deprecated_delete_breakpoint_hook (bpt); | |
104c1213 | 7223 | breakpoint_delete_event (bpt->number); |
c906108c | 7224 | |
c906108c SS |
7225 | if (breakpoint_chain == bpt) |
7226 | breakpoint_chain = bpt->next; | |
7227 | ||
c906108c SS |
7228 | ALL_BREAKPOINTS (b) |
7229 | if (b->next == bpt) | |
c5aa993b JM |
7230 | { |
7231 | b->next = bpt->next; | |
7232 | break; | |
7233 | } | |
c906108c | 7234 | |
c906108c | 7235 | free_command_lines (&bpt->commands); |
c906108c | 7236 | if (bpt->cond_string != NULL) |
b8c9b27d | 7237 | xfree (bpt->cond_string); |
c906108c | 7238 | if (bpt->addr_string != NULL) |
b8c9b27d | 7239 | xfree (bpt->addr_string); |
c906108c | 7240 | if (bpt->exp != NULL) |
b8c9b27d | 7241 | xfree (bpt->exp); |
c906108c | 7242 | if (bpt->exp_string != NULL) |
b8c9b27d | 7243 | xfree (bpt->exp_string); |
c906108c SS |
7244 | if (bpt->val != NULL) |
7245 | value_free (bpt->val); | |
7246 | if (bpt->source_file != NULL) | |
b8c9b27d | 7247 | xfree (bpt->source_file); |
c906108c | 7248 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7249 | xfree (bpt->dll_pathname); |
c906108c | 7250 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7251 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7252 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7253 | xfree (bpt->exec_pathname); |
c906108c SS |
7254 | |
7255 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7256 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7257 | We just check stop_bpstat for now. Note that we cannot just |
7258 | remove bpstats pointing at bpt from the stop_bpstat list | |
7259 | entirely, as breakpoint commands are associated with the bpstat; | |
7260 | if we remove it here, then the later call to | |
7261 | bpstat_do_actions (&stop_bpstat); | |
7262 | in event-top.c won't do anything, and temporary breakpoints | |
7263 | with commands won't work. */ | |
a474d7c2 PA |
7264 | |
7265 | /* Clear the current context. */ | |
7266 | bpstat_remove_breakpoint (stop_bpstat, bpt); | |
7267 | /* And from all threads. */ | |
7268 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
74960c60 VP |
7269 | |
7270 | /* Now that breakpoint is removed from breakpoint | |
7271 | list, update the global location list. This | |
7272 | will remove locations that used to belong to | |
7273 | this breakpoint. Do this before freeing | |
7274 | the breakpoint itself, since remove_breakpoint | |
7275 | looks at location's owner. It might be better | |
7276 | design to have location completely self-contained, | |
7277 | but it's not the case now. */ | |
b60e7edf | 7278 | update_global_location_list (0); |
74960c60 VP |
7279 | |
7280 | ||
c906108c SS |
7281 | /* On the chance that someone will soon try again to delete this same |
7282 | bp, we mark it as deleted before freeing its storage. */ | |
7283 | bpt->type = bp_none; | |
7284 | ||
b8c9b27d | 7285 | xfree (bpt); |
c906108c SS |
7286 | } |
7287 | ||
4d6140d9 AC |
7288 | static void |
7289 | do_delete_breakpoint_cleanup (void *b) | |
7290 | { | |
7291 | delete_breakpoint (b); | |
7292 | } | |
7293 | ||
7294 | struct cleanup * | |
7295 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7296 | { | |
7297 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7298 | } | |
7299 | ||
c906108c | 7300 | void |
fba45db2 | 7301 | delete_command (char *arg, int from_tty) |
c906108c SS |
7302 | { |
7303 | struct breakpoint *b, *temp; | |
7304 | ||
ea9365bb TT |
7305 | dont_repeat (); |
7306 | ||
c906108c SS |
7307 | if (arg == 0) |
7308 | { | |
7309 | int breaks_to_delete = 0; | |
7310 | ||
7311 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7312 | Do not delete internal or call-dummy breakpoints, these |
7313 | have to be deleted with an explicit breakpoint number argument. */ | |
7314 | ALL_BREAKPOINTS (b) | |
7315 | { | |
7316 | if (b->type != bp_call_dummy && | |
7317 | b->type != bp_shlib_event && | |
c4093a6a | 7318 | b->type != bp_thread_event && |
1900040c | 7319 | b->type != bp_overlay_event && |
c5aa993b | 7320 | b->number >= 0) |
973d738b DJ |
7321 | { |
7322 | breaks_to_delete = 1; | |
7323 | break; | |
7324 | } | |
c5aa993b | 7325 | } |
c906108c SS |
7326 | |
7327 | /* Ask user only if there are some breakpoints to delete. */ | |
7328 | if (!from_tty | |
e2e0b3e5 | 7329 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7330 | { |
c5aa993b JM |
7331 | ALL_BREAKPOINTS_SAFE (b, temp) |
7332 | { | |
7333 | if (b->type != bp_call_dummy && | |
7334 | b->type != bp_shlib_event && | |
c4093a6a | 7335 | b->type != bp_thread_event && |
1900040c | 7336 | b->type != bp_overlay_event && |
c5aa993b JM |
7337 | b->number >= 0) |
7338 | delete_breakpoint (b); | |
7339 | } | |
c906108c SS |
7340 | } |
7341 | } | |
7342 | else | |
7343 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7344 | } | |
7345 | ||
0d381245 VP |
7346 | static int |
7347 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7348 | { |
0d381245 VP |
7349 | for (; loc; loc = loc->next) |
7350 | if (!loc->shlib_disabled) | |
7351 | return 0; | |
7352 | return 1; | |
fe3f5fa8 VP |
7353 | } |
7354 | ||
776592bf DE |
7355 | /* Subroutine of update_breakpoint_locations to simplify it. |
7356 | Return non-zero if multiple fns in list LOC have the same name. | |
7357 | Null names are ignored. */ | |
7358 | ||
7359 | static int | |
7360 | ambiguous_names_p (struct bp_location *loc) | |
7361 | { | |
7362 | struct bp_location *l; | |
7363 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7364 | (int (*) (const void *, const void *)) streq, | |
7365 | NULL, xcalloc, xfree); | |
7366 | ||
7367 | for (l = loc; l != NULL; l = l->next) | |
7368 | { | |
7369 | const char **slot; | |
7370 | const char *name = l->function_name; | |
7371 | ||
7372 | /* Allow for some names to be NULL, ignore them. */ | |
7373 | if (name == NULL) | |
7374 | continue; | |
7375 | ||
7376 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7377 | INSERT); | |
7378 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7379 | NULL. */ | |
7380 | if (*slot != NULL) | |
7381 | { | |
7382 | htab_delete (htab); | |
7383 | return 1; | |
7384 | } | |
7385 | *slot = name; | |
7386 | } | |
7387 | ||
7388 | htab_delete (htab); | |
7389 | return 0; | |
7390 | } | |
7391 | ||
fe3f5fa8 | 7392 | static void |
0d381245 VP |
7393 | update_breakpoint_locations (struct breakpoint *b, |
7394 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7395 | { |
7396 | int i; | |
7397 | char *s; | |
0d381245 VP |
7398 | struct bp_location *existing_locations = b->loc; |
7399 | ||
7400 | /* If there's no new locations, and all existing locations | |
7401 | are pending, don't do anything. This optimizes | |
7402 | the common case where all locations are in the same | |
7403 | shared library, that was unloaded. We'd like to | |
7404 | retain the location, so that when the library | |
7405 | is loaded again, we don't loose the enabled/disabled | |
7406 | status of the individual locations. */ | |
7407 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7408 | return; |
7409 | ||
fe3f5fa8 VP |
7410 | b->loc = NULL; |
7411 | ||
0d381245 | 7412 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7413 | { |
0d381245 VP |
7414 | struct bp_location *new_loc = |
7415 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7416 | |
0d381245 VP |
7417 | /* Reparse conditions, they might contain references to the |
7418 | old symtab. */ | |
7419 | if (b->cond_string != NULL) | |
7420 | { | |
7421 | struct gdb_exception e; | |
fe3f5fa8 | 7422 | |
0d381245 VP |
7423 | s = b->cond_string; |
7424 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7425 | { | |
7426 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7427 | 0); | |
7428 | } | |
7429 | if (e.reason < 0) | |
7430 | { | |
7431 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7432 | b->number, e.message); | |
7433 | new_loc->enabled = 0; | |
7434 | } | |
7435 | } | |
fe3f5fa8 | 7436 | |
0d381245 VP |
7437 | if (b->source_file != NULL) |
7438 | xfree (b->source_file); | |
7439 | if (sals.sals[i].symtab == NULL) | |
7440 | b->source_file = NULL; | |
7441 | else | |
7442 | b->source_file = | |
7443 | savestring (sals.sals[i].symtab->filename, | |
7444 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7445 | |
0d381245 VP |
7446 | if (b->line_number == 0) |
7447 | b->line_number = sals.sals[i].line; | |
7448 | } | |
fe3f5fa8 | 7449 | |
0d381245 VP |
7450 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7451 | { | |
7452 | struct bp_location *e = existing_locations; | |
776592bf DE |
7453 | /* If there are multiple breakpoints with the same function name, |
7454 | e.g. for inline functions, comparing function names won't work. | |
7455 | Instead compare pc addresses; this is just a heuristic as things | |
7456 | may have moved, but in practice it gives the correct answer | |
7457 | often enough until a better solution is found. */ | |
7458 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7459 | ||
0d381245 VP |
7460 | for (; e; e = e->next) |
7461 | { | |
7462 | if (!e->enabled && e->function_name) | |
7463 | { | |
7464 | struct bp_location *l = b->loc; | |
776592bf DE |
7465 | if (have_ambiguous_names) |
7466 | { | |
7467 | for (; l; l = l->next) | |
7468 | if (e->address == l->address) | |
7469 | { | |
7470 | l->enabled = 0; | |
7471 | break; | |
7472 | } | |
7473 | } | |
7474 | else | |
7475 | { | |
7476 | for (; l; l = l->next) | |
7477 | if (l->function_name | |
7478 | && strcmp (e->function_name, l->function_name) == 0) | |
7479 | { | |
7480 | l->enabled = 0; | |
7481 | break; | |
7482 | } | |
7483 | } | |
0d381245 VP |
7484 | } |
7485 | } | |
7486 | } | |
fe3f5fa8 | 7487 | |
b60e7edf | 7488 | update_global_location_list (1); |
fe3f5fa8 VP |
7489 | } |
7490 | ||
7491 | ||
c906108c SS |
7492 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7493 | The value we return ends up being the return value from catch_errors. | |
7494 | Unused in this case. */ | |
7495 | ||
7496 | static int | |
4efb68b1 | 7497 | breakpoint_re_set_one (void *bint) |
c906108c | 7498 | { |
53a5351d JM |
7499 | /* get past catch_errs */ |
7500 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7501 | struct value *mark; |
7502 | int i; | |
fe3f5fa8 VP |
7503 | int not_found = 0; |
7504 | int *not_found_ptr = ¬_found; | |
7505 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7506 | struct symtabs_and_lines expanded; |
c906108c | 7507 | char *s; |
b5de0fa7 | 7508 | enum enable_state save_enable; |
fe3f5fa8 VP |
7509 | struct gdb_exception e; |
7510 | ||
c906108c SS |
7511 | |
7512 | switch (b->type) | |
7513 | { | |
7514 | case bp_none: | |
8a3fe4f8 | 7515 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7516 | b->number); |
c906108c SS |
7517 | return 0; |
7518 | case bp_breakpoint: | |
7519 | case bp_hardware_breakpoint: | |
7520 | case bp_catch_load: | |
7521 | case bp_catch_unload: | |
7522 | if (b->addr_string == NULL) | |
7523 | { | |
7524 | /* Anything without a string can't be re-set. */ | |
7525 | delete_breakpoint (b); | |
7526 | return 0; | |
7527 | } | |
c906108c SS |
7528 | |
7529 | set_language (b->language); | |
7530 | input_radix = b->input_radix; | |
7531 | s = b->addr_string; | |
fe3f5fa8 | 7532 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7533 | { |
fe3f5fa8 VP |
7534 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7535 | not_found_ptr); | |
7536 | } | |
7537 | if (e.reason < 0) | |
7538 | { | |
7539 | int not_found_and_ok = 0; | |
7540 | /* For pending breakpoints, it's expected that parsing | |
7541 | will fail until the right shared library is loaded. | |
7542 | User has already told to create pending breakpoints and | |
7543 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7544 | state, then user already saw the message about that breakpoint | |
7545 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7546 | if (not_found |
7547 | && (b->condition_not_parsed | |
7548 | || (b->loc && b->loc->shlib_disabled) | |
7549 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7550 | not_found_and_ok = 1; |
7551 | ||
7552 | if (!not_found_and_ok) | |
c906108c | 7553 | { |
fe3f5fa8 VP |
7554 | /* We surely don't want to warn about the same breakpoint |
7555 | 10 times. One solution, implemented here, is disable | |
7556 | the breakpoint on error. Another solution would be to | |
7557 | have separate 'warning emitted' flag. Since this | |
7558 | happens only when a binary has changed, I don't know | |
7559 | which approach is better. */ | |
7560 | b->enable_state = bp_disabled; | |
7561 | throw_exception (e); | |
c906108c | 7562 | } |
fe3f5fa8 | 7563 | } |
c906108c | 7564 | |
fe3f5fa8 VP |
7565 | if (not_found) |
7566 | break; | |
7567 | ||
7568 | gdb_assert (sals.nelts == 1); | |
7569 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7570 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7571 | { |
7572 | char *cond_string = 0; | |
7573 | int thread = -1; | |
7574 | find_condition_and_thread (s, sals.sals[0].pc, | |
7575 | &cond_string, &thread); | |
7576 | if (cond_string) | |
7577 | b->cond_string = cond_string; | |
7578 | b->thread = thread; | |
0d381245 | 7579 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7580 | } |
ed0616c6 VP |
7581 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7582 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7583 | |
b8c9b27d | 7584 | xfree (sals.sals); |
c906108c SS |
7585 | break; |
7586 | ||
7587 | case bp_watchpoint: | |
7588 | case bp_hardware_watchpoint: | |
7589 | case bp_read_watchpoint: | |
7590 | case bp_access_watchpoint: | |
0b3de036 VP |
7591 | /* Watchpoint can be either on expression using entirely global variables, |
7592 | or it can be on local variables. | |
7593 | ||
7594 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7595 | across program restarts. Since they can use variables from shared | |
7596 | libraries, we need to reparse expression as libraries are loaded | |
7597 | and unloaded. | |
7598 | ||
7599 | Watchpoints on local variables can also change meaning as result | |
7600 | of solib event. For example, if a watchpoint uses both a local and | |
7601 | a global variables in expression, it's a local watchpoint, but | |
7602 | unloading of a shared library will make the expression invalid. | |
7603 | This is not a very common use case, but we still re-evaluate | |
7604 | expression, to avoid surprises to the user. | |
7605 | ||
7606 | Note that for local watchpoints, we re-evaluate it only if | |
7607 | watchpoints frame id is still valid. If it's not, it means | |
7608 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7609 | I'm not sure we'll ever be called in this case. | |
7610 | ||
7611 | If a local watchpoint's frame id is still valid, then | |
7612 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7613 | ||
7614 | Don't do anything about disabled watchpoints, since they will | |
7615 | be reevaluated again when enabled. */ | |
a5606eee | 7616 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7617 | break; |
c5aa993b JM |
7618 | /* We needn't really do anything to reset these, since the mask |
7619 | that requests them is unaffected by e.g., new libraries being | |
7620 | loaded. */ | |
c906108c SS |
7621 | case bp_catch_fork: |
7622 | case bp_catch_vfork: | |
7623 | case bp_catch_exec: | |
7624 | break; | |
c5aa993b | 7625 | |
c906108c | 7626 | default: |
a3f17187 | 7627 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7628 | /* fall through */ |
611c83ae PA |
7629 | /* Delete overlay event breakpoints; they will be reset later by |
7630 | breakpoint_re_set. */ | |
1900040c | 7631 | case bp_overlay_event: |
c906108c SS |
7632 | delete_breakpoint (b); |
7633 | break; | |
7634 | ||
c5aa993b JM |
7635 | /* This breakpoint is special, it's set up when the inferior |
7636 | starts and we really don't want to touch it. */ | |
c906108c SS |
7637 | case bp_shlib_event: |
7638 | ||
c4093a6a JM |
7639 | /* Like bp_shlib_event, this breakpoint type is special. |
7640 | Once it is set up, we do not want to touch it. */ | |
7641 | case bp_thread_event: | |
7642 | ||
c5aa993b JM |
7643 | /* Keep temporary breakpoints, which can be encountered when we step |
7644 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7645 | Otherwise these should have been blown away via the cleanup chain | |
7646 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7647 | case bp_until: |
7648 | case bp_finish: | |
7649 | case bp_watchpoint_scope: | |
7650 | case bp_call_dummy: | |
7651 | case bp_step_resume: | |
611c83ae PA |
7652 | case bp_longjmp: |
7653 | case bp_longjmp_resume: | |
c906108c SS |
7654 | break; |
7655 | } | |
7656 | ||
7657 | return 0; | |
7658 | } | |
7659 | ||
7660 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7661 | void | |
fba45db2 | 7662 | breakpoint_re_set (void) |
c906108c SS |
7663 | { |
7664 | struct breakpoint *b, *temp; | |
7665 | enum language save_language; | |
7666 | int save_input_radix; | |
c5aa993b | 7667 | |
c906108c SS |
7668 | save_language = current_language->la_language; |
7669 | save_input_radix = input_radix; | |
7670 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7671 | { |
53a5351d | 7672 | /* Format possible error msg */ |
fe3f5fa8 | 7673 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7674 | b->number); |
7675 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7676 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7677 | do_cleanups (cleanups); |
c5aa993b | 7678 | } |
c906108c SS |
7679 | set_language (save_language); |
7680 | input_radix = save_input_radix; | |
1900040c MS |
7681 | |
7682 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7683 | } |
7684 | \f | |
c906108c SS |
7685 | /* Reset the thread number of this breakpoint: |
7686 | ||
7687 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7688 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7689 | void |
fba45db2 | 7690 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7691 | { |
7692 | if (b->thread != -1) | |
7693 | { | |
39f77062 KB |
7694 | if (in_thread_list (inferior_ptid)) |
7695 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7696 | } |
7697 | } | |
7698 | ||
03ac34d5 MS |
7699 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7700 | If from_tty is nonzero, it prints a message to that effect, | |
7701 | which ends with a period (no newline). */ | |
7702 | ||
c906108c | 7703 | void |
fba45db2 | 7704 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7705 | { |
52f0bd74 | 7706 | struct breakpoint *b; |
c906108c SS |
7707 | |
7708 | if (count < 0) | |
7709 | count = 0; | |
7710 | ||
7711 | ALL_BREAKPOINTS (b) | |
7712 | if (b->number == bptnum) | |
c5aa993b JM |
7713 | { |
7714 | b->ignore_count = count; | |
221ea385 KS |
7715 | if (from_tty) |
7716 | { | |
7717 | if (count == 0) | |
a3f17187 | 7718 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7719 | bptnum); |
7720 | else if (count == 1) | |
a3f17187 | 7721 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7722 | bptnum); |
7723 | else | |
a3f17187 | 7724 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7725 | count, bptnum); |
7726 | } | |
c5aa993b | 7727 | breakpoints_changed (); |
221ea385 | 7728 | breakpoint_modify_event (b->number); |
c5aa993b JM |
7729 | return; |
7730 | } | |
c906108c | 7731 | |
8a3fe4f8 | 7732 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7733 | } |
7734 | ||
7735 | /* Clear the ignore counts of all breakpoints. */ | |
7736 | void | |
fba45db2 | 7737 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7738 | { |
7739 | struct breakpoint *b; | |
7740 | ||
7741 | ALL_BREAKPOINTS (b) | |
7742 | b->ignore_count = 0; | |
7743 | } | |
7744 | ||
7745 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7746 | ||
7747 | static void | |
fba45db2 | 7748 | ignore_command (char *args, int from_tty) |
c906108c SS |
7749 | { |
7750 | char *p = args; | |
52f0bd74 | 7751 | int num; |
c906108c SS |
7752 | |
7753 | if (p == 0) | |
e2e0b3e5 | 7754 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7755 | |
c906108c | 7756 | num = get_number (&p); |
5c44784c | 7757 | if (num == 0) |
8a3fe4f8 | 7758 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7759 | if (*p == 0) |
8a3fe4f8 | 7760 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7761 | |
7762 | set_ignore_count (num, | |
7763 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7764 | from_tty); | |
221ea385 KS |
7765 | if (from_tty) |
7766 | printf_filtered ("\n"); | |
c906108c SS |
7767 | } |
7768 | \f | |
7769 | /* Call FUNCTION on each of the breakpoints | |
7770 | whose numbers are given in ARGS. */ | |
7771 | ||
7772 | static void | |
831662b3 | 7773 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7774 | { |
52f0bd74 | 7775 | char *p = args; |
c906108c | 7776 | char *p1; |
52f0bd74 AC |
7777 | int num; |
7778 | struct breakpoint *b, *tmp; | |
11cf8741 | 7779 | int match; |
c906108c SS |
7780 | |
7781 | if (p == 0) | |
e2e0b3e5 | 7782 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7783 | |
7784 | while (*p) | |
7785 | { | |
11cf8741 | 7786 | match = 0; |
c906108c | 7787 | p1 = p; |
c5aa993b | 7788 | |
5c44784c JM |
7789 | num = get_number_or_range (&p1); |
7790 | if (num == 0) | |
c5aa993b | 7791 | { |
8a3fe4f8 | 7792 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7793 | } |
7794 | else | |
7795 | { | |
7796 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7797 | if (b->number == num) | |
7798 | { | |
7799 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7800 | match = 1; |
5c44784c JM |
7801 | function (b); |
7802 | if (related_breakpoint) | |
7803 | function (related_breakpoint); | |
11cf8741 | 7804 | break; |
5c44784c | 7805 | } |
11cf8741 | 7806 | if (match == 0) |
a3f17187 | 7807 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7808 | } |
c906108c SS |
7809 | p = p1; |
7810 | } | |
7811 | } | |
7812 | ||
0d381245 VP |
7813 | static struct bp_location * |
7814 | find_location_by_number (char *number) | |
7815 | { | |
7816 | char *dot = strchr (number, '.'); | |
7817 | char *p1; | |
7818 | int bp_num; | |
7819 | int loc_num; | |
7820 | struct breakpoint *b; | |
7821 | struct bp_location *loc; | |
7822 | ||
7823 | *dot = '\0'; | |
7824 | ||
7825 | p1 = number; | |
7826 | bp_num = get_number_or_range (&p1); | |
7827 | if (bp_num == 0) | |
7828 | error (_("Bad breakpoint number '%s'"), number); | |
7829 | ||
7830 | ALL_BREAKPOINTS (b) | |
7831 | if (b->number == bp_num) | |
7832 | { | |
7833 | break; | |
7834 | } | |
7835 | ||
7836 | if (!b || b->number != bp_num) | |
7837 | error (_("Bad breakpoint number '%s'"), number); | |
7838 | ||
7839 | p1 = dot+1; | |
7840 | loc_num = get_number_or_range (&p1); | |
7841 | if (loc_num == 0) | |
7842 | error (_("Bad breakpoint location number '%s'"), number); | |
7843 | ||
7844 | --loc_num; | |
7845 | loc = b->loc; | |
7846 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7847 | ; | |
7848 | if (!loc) | |
7849 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7850 | ||
7851 | return loc; | |
7852 | } | |
7853 | ||
7854 | ||
1900040c MS |
7855 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7856 | If from_tty is nonzero, it prints a message to that effect, | |
7857 | which ends with a period (no newline). */ | |
7858 | ||
c906108c | 7859 | void |
fba45db2 | 7860 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7861 | { |
7862 | /* Never disable a watchpoint scope breakpoint; we want to | |
7863 | hit them when we leave scope so we can delete both the | |
7864 | watchpoint and its scope breakpoint at that time. */ | |
7865 | if (bpt->type == bp_watchpoint_scope) | |
7866 | return; | |
7867 | ||
c2c6d25f | 7868 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7869 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7870 | return; |
7871 | ||
b5de0fa7 | 7872 | bpt->enable_state = bp_disabled; |
c906108c | 7873 | |
b60e7edf | 7874 | update_global_location_list (0); |
c906108c | 7875 | |
9a4105ab AC |
7876 | if (deprecated_modify_breakpoint_hook) |
7877 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 7878 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7879 | } |
7880 | ||
c906108c | 7881 | static void |
fba45db2 | 7882 | disable_command (char *args, int from_tty) |
c906108c | 7883 | { |
52f0bd74 | 7884 | struct breakpoint *bpt; |
c906108c SS |
7885 | if (args == 0) |
7886 | ALL_BREAKPOINTS (bpt) | |
7887 | switch (bpt->type) | |
c5aa993b JM |
7888 | { |
7889 | case bp_none: | |
8a3fe4f8 | 7890 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7891 | bpt->number); |
c5aa993b JM |
7892 | continue; |
7893 | case bp_breakpoint: | |
7894 | case bp_catch_load: | |
7895 | case bp_catch_unload: | |
7896 | case bp_catch_fork: | |
7897 | case bp_catch_vfork: | |
7898 | case bp_catch_exec: | |
c5aa993b JM |
7899 | case bp_hardware_breakpoint: |
7900 | case bp_watchpoint: | |
7901 | case bp_hardware_watchpoint: | |
7902 | case bp_read_watchpoint: | |
7903 | case bp_access_watchpoint: | |
7904 | disable_breakpoint (bpt); | |
7905 | default: | |
7906 | continue; | |
7907 | } | |
0d381245 VP |
7908 | else if (strchr (args, '.')) |
7909 | { | |
7910 | struct bp_location *loc = find_location_by_number (args); | |
7911 | if (loc) | |
7912 | loc->enabled = 0; | |
b60e7edf | 7913 | update_global_location_list (0); |
0d381245 | 7914 | } |
c906108c SS |
7915 | else |
7916 | map_breakpoint_numbers (args, disable_breakpoint); | |
7917 | } | |
7918 | ||
7919 | static void | |
fba45db2 | 7920 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7921 | { |
c906108c SS |
7922 | int target_resources_ok, other_type_used; |
7923 | struct value *mark; | |
7924 | ||
7925 | if (bpt->type == bp_hardware_breakpoint) | |
7926 | { | |
7927 | int i; | |
c5aa993b | 7928 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7929 | target_resources_ok = |
7930 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7931 | i + 1, 0); | |
c906108c | 7932 | if (target_resources_ok == 0) |
8a3fe4f8 | 7933 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7934 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7935 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7936 | } |
7937 | ||
fe3f5fa8 VP |
7938 | if (bpt->type == bp_watchpoint || |
7939 | bpt->type == bp_hardware_watchpoint || | |
7940 | bpt->type == bp_read_watchpoint || | |
7941 | bpt->type == bp_access_watchpoint) | |
c906108c | 7942 | { |
fe3f5fa8 VP |
7943 | struct frame_id saved_frame_id; |
7944 | ||
7945 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7946 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7947 | { |
fe3f5fa8 VP |
7948 | struct frame_info *fr = |
7949 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7950 | if (fr == NULL) | |
c906108c | 7951 | { |
fe3f5fa8 VP |
7952 | printf_filtered (_("\ |
7953 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7954 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7955 | return; |
7956 | } | |
fe3f5fa8 | 7957 | select_frame (fr); |
c906108c | 7958 | } |
0101ce28 | 7959 | |
b4c291bb KH |
7960 | if (bpt->val) |
7961 | value_free (bpt->val); | |
fe3f5fa8 | 7962 | mark = value_mark (); |
fa4727a6 DJ |
7963 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7964 | if (bpt->val) | |
7965 | release_value (bpt->val); | |
7966 | bpt->val_valid = 1; | |
7967 | ||
fe3f5fa8 VP |
7968 | if (bpt->type == bp_hardware_watchpoint || |
7969 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7970 | bpt->type == bp_access_watchpoint) |
7971 | { | |
fe3f5fa8 VP |
7972 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7973 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7974 | |
fe3f5fa8 VP |
7975 | /* Hack around 'unused var' error for some targets here */ |
7976 | (void) mem_cnt, (void) i; | |
7977 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7978 | bpt->type, i + mem_cnt, other_type_used); | |
7979 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7980 | bp_watchpoint in the following condition */ | |
7981 | if (target_resources_ok < 0) | |
c5aa993b | 7982 | { |
fe3f5fa8 | 7983 | printf_filtered (_("\ |
c906108c | 7984 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7985 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7986 | value_free_to_mark (mark); |
7987 | return; | |
c5aa993b JM |
7988 | } |
7989 | } | |
fe3f5fa8 VP |
7990 | |
7991 | select_frame (frame_find_by_id (saved_frame_id)); | |
7992 | value_free_to_mark (mark); | |
c906108c | 7993 | } |
0101ce28 | 7994 | |
b4c291bb KH |
7995 | if (bpt->enable_state != bp_permanent) |
7996 | bpt->enable_state = bp_enabled; | |
7997 | bpt->disposition = disposition; | |
b60e7edf | 7998 | update_global_location_list (1); |
b4c291bb KH |
7999 | breakpoints_changed (); |
8000 | ||
9a4105ab AC |
8001 | if (deprecated_modify_breakpoint_hook) |
8002 | deprecated_modify_breakpoint_hook (bpt); | |
104c1213 | 8003 | breakpoint_modify_event (bpt->number); |
c906108c SS |
8004 | } |
8005 | ||
fe3f5fa8 | 8006 | |
c906108c | 8007 | void |
fba45db2 | 8008 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8009 | { |
8010 | do_enable_breakpoint (bpt, bpt->disposition); | |
8011 | } | |
8012 | ||
8013 | /* The enable command enables the specified breakpoints (or all defined | |
8014 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8015 | in stopping the inferior. */ |
c906108c | 8016 | |
c906108c | 8017 | static void |
fba45db2 | 8018 | enable_command (char *args, int from_tty) |
c906108c | 8019 | { |
52f0bd74 | 8020 | struct breakpoint *bpt; |
c906108c SS |
8021 | if (args == 0) |
8022 | ALL_BREAKPOINTS (bpt) | |
8023 | switch (bpt->type) | |
c5aa993b JM |
8024 | { |
8025 | case bp_none: | |
8a3fe4f8 | 8026 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8027 | bpt->number); |
c5aa993b JM |
8028 | continue; |
8029 | case bp_breakpoint: | |
8030 | case bp_catch_load: | |
8031 | case bp_catch_unload: | |
8032 | case bp_catch_fork: | |
8033 | case bp_catch_vfork: | |
8034 | case bp_catch_exec: | |
c5aa993b JM |
8035 | case bp_hardware_breakpoint: |
8036 | case bp_watchpoint: | |
8037 | case bp_hardware_watchpoint: | |
8038 | case bp_read_watchpoint: | |
8039 | case bp_access_watchpoint: | |
8040 | enable_breakpoint (bpt); | |
8041 | default: | |
8042 | continue; | |
8043 | } | |
0d381245 VP |
8044 | else if (strchr (args, '.')) |
8045 | { | |
8046 | struct bp_location *loc = find_location_by_number (args); | |
8047 | if (loc) | |
8048 | loc->enabled = 1; | |
b60e7edf | 8049 | update_global_location_list (1); |
0d381245 | 8050 | } |
c906108c SS |
8051 | else |
8052 | map_breakpoint_numbers (args, enable_breakpoint); | |
8053 | } | |
8054 | ||
8055 | static void | |
fba45db2 | 8056 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8057 | { |
b5de0fa7 | 8058 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8059 | } |
8060 | ||
c906108c | 8061 | static void |
fba45db2 | 8062 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8063 | { |
8064 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8065 | } | |
8066 | ||
8067 | static void | |
fba45db2 | 8068 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8069 | { |
b5de0fa7 | 8070 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8071 | } |
8072 | ||
c906108c | 8073 | static void |
fba45db2 | 8074 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8075 | { |
8076 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8077 | } | |
8078 | \f | |
fa8d40ab JJ |
8079 | static void |
8080 | set_breakpoint_cmd (char *args, int from_tty) | |
8081 | { | |
8082 | } | |
8083 | ||
8084 | static void | |
8085 | show_breakpoint_cmd (char *args, int from_tty) | |
8086 | { | |
8087 | } | |
8088 | ||
c906108c SS |
8089 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8090 | ||
8091 | struct symtabs_and_lines | |
fba45db2 | 8092 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8093 | { |
8094 | struct symtabs_and_lines sals; | |
8095 | if (string == 0) | |
8a3fe4f8 | 8096 | error (_("Empty line specification.")); |
c906108c SS |
8097 | if (default_breakpoint_valid) |
8098 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8099 | default_breakpoint_symtab, |
8100 | default_breakpoint_line, | |
68219205 | 8101 | (char ***) NULL, NULL); |
c906108c SS |
8102 | else |
8103 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8104 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8105 | if (*string) |
8a3fe4f8 | 8106 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8107 | return sals; |
8108 | } | |
8181d85f DJ |
8109 | |
8110 | /* Create and insert a raw software breakpoint at PC. Return an | |
8111 | identifier, which should be used to remove the breakpoint later. | |
8112 | In general, places which call this should be using something on the | |
8113 | breakpoint chain instead; this function should be eliminated | |
8114 | someday. */ | |
8115 | ||
8116 | void * | |
8117 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8118 | { | |
8119 | struct bp_target_info *bp_tgt; | |
8120 | ||
8121 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8122 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8123 | ||
8124 | bp_tgt->placed_address = pc; | |
8125 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8126 | { | |
8127 | /* Could not insert the breakpoint. */ | |
8128 | xfree (bp_tgt); | |
8129 | return NULL; | |
8130 | } | |
8131 | ||
8132 | return bp_tgt; | |
8133 | } | |
8134 | ||
8135 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8136 | ||
8137 | int | |
8138 | deprecated_remove_raw_breakpoint (void *bp) | |
8139 | { | |
8140 | struct bp_target_info *bp_tgt = bp; | |
8141 | int ret; | |
8142 | ||
8143 | ret = target_remove_breakpoint (bp_tgt); | |
8144 | xfree (bp_tgt); | |
8145 | ||
8146 | return ret; | |
8147 | } | |
8148 | ||
8149 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8150 | ||
8151 | static void *single_step_breakpoints[2]; | |
8152 | ||
8153 | /* Create and insert a breakpoint for software single step. */ | |
8154 | ||
8155 | void | |
8156 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8157 | { | |
8158 | void **bpt_p; | |
8159 | ||
8160 | if (single_step_breakpoints[0] == NULL) | |
8161 | bpt_p = &single_step_breakpoints[0]; | |
8162 | else | |
8163 | { | |
8164 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8165 | bpt_p = &single_step_breakpoints[1]; | |
8166 | } | |
8167 | ||
8168 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8169 | to only create the breakpoints once, and actually put them on the | |
8170 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8171 | adjust the addresses each time they were needed. Doing this requires | |
8172 | corresponding changes elsewhere where single step breakpoints are | |
8173 | handled, however. So, for now, we use this. */ | |
8174 | ||
8175 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8176 | if (*bpt_p == NULL) | |
1893a4c0 | 8177 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8178 | paddr_nz (next_pc)); |
8179 | } | |
8180 | ||
8181 | /* Remove and delete any breakpoints used for software single step. */ | |
8182 | ||
8183 | void | |
8184 | remove_single_step_breakpoints (void) | |
8185 | { | |
8186 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8187 | ||
8188 | /* See insert_single_step_breakpoint for more about this deprecated | |
8189 | call. */ | |
8190 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8191 | single_step_breakpoints[0] = NULL; | |
8192 | ||
8193 | if (single_step_breakpoints[1] != NULL) | |
8194 | { | |
8195 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8196 | single_step_breakpoints[1] = NULL; | |
8197 | } | |
8198 | } | |
8199 | ||
1aafd4da UW |
8200 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8201 | ||
8202 | static int | |
8203 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8204 | { | |
8205 | int i; | |
8206 | ||
8207 | for (i = 0; i < 2; i++) | |
8208 | { | |
8209 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8210 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8211 | return 1; | |
8212 | } | |
8213 | ||
8214 | return 0; | |
8215 | } | |
8216 | ||
74960c60 VP |
8217 | int breakpoints_always_inserted_mode (void) |
8218 | { | |
8219 | return always_inserted_mode; | |
8220 | } | |
8221 | ||
c906108c | 8222 | \f |
31e2b00f AS |
8223 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8224 | It is defined as a macro to prevent duplication. | |
8225 | COMMAND should be a string constant containing the name of the command. */ | |
8226 | #define BREAK_ARGS_HELP(command) \ | |
8227 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8228 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8229 | If a line number is specified, break at start of code for that line.\n\ | |
8230 | If a function is specified, break at start of code for that function.\n\ | |
8231 | If an address is specified, break at that exact address.\n\ | |
8232 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8233 | This is useful for breaking on return to a stack frame.\n\ | |
8234 | \n\ | |
8235 | THREADNUM is the number from \"info threads\".\n\ | |
8236 | CONDITION is a boolean expression.\n\ | |
8237 | \n\ | |
8238 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8239 | \n\ | |
8240 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8241 | ||
c906108c | 8242 | void |
fba45db2 | 8243 | _initialize_breakpoint (void) |
c906108c | 8244 | { |
fa8d40ab JJ |
8245 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8246 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8247 | struct cmd_list_element *c; |
8248 | ||
84acb35a | 8249 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8250 | |
c906108c SS |
8251 | breakpoint_chain = 0; |
8252 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8253 | before a breakpoint is set. */ | |
8254 | breakpoint_count = 0; | |
8255 | ||
1bedd215 AC |
8256 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8257 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8258 | Usage is `ignore N COUNT'.")); | |
c906108c | 8259 | if (xdb_commands) |
c5aa993b | 8260 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8261 | |
1bedd215 AC |
8262 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8263 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8264 | Give breakpoint number as argument after \"commands\".\n\ |
8265 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8266 | The commands themselves follow starting on the next line.\n\ | |
8267 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8268 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8269 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8270 | |
1bedd215 AC |
8271 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8272 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8273 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8274 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8275 | |
1bedd215 | 8276 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8277 | Set a temporary breakpoint.\n\ |
c906108c SS |
8278 | Like \"break\" except the breakpoint is only temporary,\n\ |
8279 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8280 | by using \"enable delete\" on the breakpoint number.\n\ |
8281 | \n" | |
8282 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8283 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8284 | |
1bedd215 | 8285 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8286 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8287 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8288 | some target hardware may not have this support.\n\ |
8289 | \n" | |
8290 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8291 | set_cmd_completer (c, location_completer); |
c906108c | 8292 | |
1bedd215 | 8293 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8294 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8295 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8296 | so it will be deleted when hit.\n\ |
8297 | \n" | |
8298 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8299 | set_cmd_completer (c, location_completer); |
c906108c | 8300 | |
1bedd215 AC |
8301 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8302 | Enable some breakpoints.\n\ | |
c906108c SS |
8303 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8304 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8305 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8306 | With a subcommand you can enable temporarily."), |
c906108c SS |
8307 | &enablelist, "enable ", 1, &cmdlist); |
8308 | if (xdb_commands) | |
1bedd215 AC |
8309 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8310 | Enable some breakpoints.\n\ | |
c906108c SS |
8311 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8312 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8313 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8314 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8315 | |
8316 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8317 | ||
1bedd215 AC |
8318 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8319 | Enable some breakpoints.\n\ | |
c906108c SS |
8320 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8321 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8322 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8323 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8324 | |
1a966eab AC |
8325 | add_cmd ("once", no_class, enable_once_command, _("\ |
8326 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8327 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8328 | &enablebreaklist); |
8329 | ||
1a966eab AC |
8330 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8331 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8332 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8333 | &enablebreaklist); |
8334 | ||
1a966eab AC |
8335 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8336 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8337 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8338 | &enablelist); |
8339 | ||
1a966eab AC |
8340 | add_cmd ("once", no_class, enable_once_command, _("\ |
8341 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8342 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8343 | &enablelist); |
8344 | ||
1bedd215 AC |
8345 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8346 | Disable some breakpoints.\n\ | |
c906108c SS |
8347 | Arguments are breakpoint numbers with spaces in between.\n\ |
8348 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8349 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8350 | &disablelist, "disable ", 1, &cmdlist); |
8351 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8352 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8353 | if (xdb_commands) | |
1bedd215 AC |
8354 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8355 | Disable some breakpoints.\n\ | |
c906108c SS |
8356 | Arguments are breakpoint numbers with spaces in between.\n\ |
8357 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8358 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8359 | |
1a966eab AC |
8360 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8361 | Disable some breakpoints.\n\ | |
c906108c SS |
8362 | Arguments are breakpoint numbers with spaces in between.\n\ |
8363 | To disable all breakpoints, give no argument.\n\ | |
8364 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8365 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8366 | &disablelist); |
8367 | ||
1bedd215 AC |
8368 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8369 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8370 | Arguments are breakpoint numbers with spaces in between.\n\ |
8371 | To delete all breakpoints, give no argument.\n\ | |
8372 | \n\ | |
8373 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8374 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8375 | &deletelist, "delete ", 1, &cmdlist); |
8376 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8377 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8378 | if (xdb_commands) |
1bedd215 AC |
8379 | add_com ("db", class_breakpoint, delete_command, _("\ |
8380 | Delete some breakpoints.\n\ | |
c906108c | 8381 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8382 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8383 | |
1a966eab AC |
8384 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8385 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8386 | Arguments are breakpoint numbers with spaces in between.\n\ |
8387 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8388 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8389 | &deletelist); |
8390 | ||
1bedd215 AC |
8391 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8392 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8393 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8394 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8395 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8396 | If an address is specified, breakpoints at that address are cleared.\n\ |
8397 | \n\ | |
8398 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8399 | is executing in.\n\ |
8400 | \n\ | |
1bedd215 | 8401 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8402 | |
1bedd215 | 8403 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8404 | Set breakpoint at specified line or function.\n" |
8405 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8406 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8407 | |
c906108c SS |
8408 | add_com_alias ("b", "break", class_run, 1); |
8409 | add_com_alias ("br", "break", class_run, 1); | |
8410 | add_com_alias ("bre", "break", class_run, 1); | |
8411 | add_com_alias ("brea", "break", class_run, 1); | |
8412 | ||
502fd408 | 8413 | if (xdb_commands) |
c906108c SS |
8414 | { |
8415 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8416 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8417 | } |
8418 | ||
8419 | if (dbx_commands) | |
8420 | { | |
1bedd215 AC |
8421 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8422 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8423 | &stoplist, "stop ", 1, &cmdlist); |
8424 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8425 | _("Break in function or address."), &stoplist); |
c5aa993b | 8426 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8427 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8428 | add_com ("status", class_info, breakpoints_info, _("\ |
8429 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8430 | The \"Type\" column indicates one of:\n\ |
8431 | \tbreakpoint - normal breakpoint\n\ | |
8432 | \twatchpoint - watchpoint\n\ | |
8433 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8434 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8435 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8436 | address and file/line number respectively.\n\ |
8437 | \n\ | |
8438 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8439 | are set to the address of the last breakpoint listed unless the command\n\ |
8440 | is prefixed with \"server \".\n\n\ | |
c906108c | 8441 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8442 | breakpoint set.")); |
c906108c SS |
8443 | } |
8444 | ||
1bedd215 AC |
8445 | add_info ("breakpoints", breakpoints_info, _("\ |
8446 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8447 | The \"Type\" column indicates one of:\n\ |
8448 | \tbreakpoint - normal breakpoint\n\ | |
8449 | \twatchpoint - watchpoint\n\ | |
8450 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8451 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8452 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8453 | address and file/line number respectively.\n\ |
8454 | \n\ | |
8455 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8456 | are set to the address of the last breakpoint listed unless the command\n\ |
8457 | is prefixed with \"server \".\n\n\ | |
c906108c | 8458 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8459 | breakpoint set.")); |
c906108c SS |
8460 | |
8461 | if (xdb_commands) | |
1bedd215 AC |
8462 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8463 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8464 | The \"Type\" column indicates one of:\n\ |
8465 | \tbreakpoint - normal breakpoint\n\ | |
8466 | \twatchpoint - watchpoint\n\ | |
8467 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8468 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8469 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8470 | address and file/line number respectively.\n\ |
8471 | \n\ | |
8472 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8473 | are set to the address of the last breakpoint listed unless the command\n\ |
8474 | is prefixed with \"server \".\n\n\ | |
c906108c | 8475 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8476 | breakpoint set.")); |
c906108c | 8477 | |
1a966eab AC |
8478 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8479 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8480 | The \"Type\" column indicates one of:\n\ |
8481 | \tbreakpoint - normal breakpoint\n\ | |
8482 | \twatchpoint - watchpoint\n\ | |
8483 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8484 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8485 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8486 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8487 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8488 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8489 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8490 | address and file/line number respectively.\n\ |
8491 | \n\ | |
8492 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8493 | are set to the address of the last breakpoint listed unless the command\n\ |
8494 | is prefixed with \"server \".\n\n\ | |
c906108c | 8495 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8496 | breakpoint set."), |
c906108c SS |
8497 | &maintenanceinfolist); |
8498 | ||
1bedd215 AC |
8499 | add_com ("catch", class_breakpoint, catch_command, _("\ |
8500 | Set catchpoints to catch events.\n\ | |
c906108c SS |
8501 | Raised signals may be caught:\n\ |
8502 | \tcatch signal - all signals\n\ | |
8503 | \tcatch signal <signame> - a particular signal\n\ | |
8504 | Raised exceptions may be caught:\n\ | |
8505 | \tcatch throw - all exceptions, when thrown\n\ | |
8506 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
8507 | \tcatch catch - all exceptions, when caught\n\ | |
8508 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
8509 | Thread or process events may be caught:\n\ | |
8510 | \tcatch thread_start - any threads, just after creation\n\ | |
8511 | \tcatch thread_exit - any threads, just before expiration\n\ | |
8512 | \tcatch thread_join - any threads, just after joins\n\ | |
8513 | Process events may be caught:\n\ | |
8514 | \tcatch start - any processes, just after creation\n\ | |
8515 | \tcatch exit - any processes, just before expiration\n\ | |
8516 | \tcatch fork - calls to fork()\n\ | |
8517 | \tcatch vfork - calls to vfork()\n\ | |
8518 | \tcatch exec - calls to exec()\n\ | |
8519 | Dynamically-linked library events may be caught:\n\ | |
8520 | \tcatch load - loads of any library\n\ | |
8521 | \tcatch load <libname> - loads of a particular library\n\ | |
8522 | \tcatch unload - unloads of any library\n\ | |
8523 | \tcatch unload <libname> - unloads of a particular library\n\ | |
8524 | The act of your program's execution stopping may also be caught:\n\ | |
8525 | \tcatch stop\n\n\ | |
8526 | C++ exceptions may be caught:\n\ | |
8527 | \tcatch throw - all exceptions, when thrown\n\ | |
8528 | \tcatch catch - all exceptions, when caught\n\ | |
f7f9143b JB |
8529 | Ada exceptions may be caught:\n\ |
8530 | \tcatch exception - all exceptions, when raised\n\ | |
8531 | \tcatch exception <name> - a particular exception, when raised\n\ | |
8532 | \tcatch exception unhandled - all unhandled exceptions, when raised\n\ | |
8533 | \tcatch assert - all failed assertions, when raised\n\ | |
c906108c SS |
8534 | \n\ |
8535 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
8536 | after a fork or vfork is caught.\n\n\ | |
1bedd215 | 8537 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.")); |
c5aa993b | 8538 | |
1bedd215 AC |
8539 | add_com ("tcatch", class_breakpoint, tcatch_command, _("\ |
8540 | Set temporary catchpoints to catch events.\n\ | |
c906108c SS |
8541 | Args like \"catch\" command.\n\ |
8542 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
8543 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
1bedd215 | 8544 | by using \"enable delete\" on the catchpoint number.")); |
c5aa993b | 8545 | |
1bedd215 AC |
8546 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8547 | Set a watchpoint for an expression.\n\ | |
c906108c | 8548 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8549 | an expression changes.")); |
65d12d83 | 8550 | set_cmd_completer (c, expression_completer); |
c906108c | 8551 | |
1bedd215 AC |
8552 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8553 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8554 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8555 | an expression is read.")); |
65d12d83 | 8556 | set_cmd_completer (c, expression_completer); |
c906108c | 8557 | |
1bedd215 AC |
8558 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8559 | Set a watchpoint for an expression.\n\ | |
c906108c | 8560 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8561 | an expression is either read or written.")); |
65d12d83 | 8562 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8563 | |
8564 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8565 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8566 | |
8567 | ||
920d2a44 AC |
8568 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8569 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8570 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8571 | &can_use_hw_watchpoints, _("\ | |
8572 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8573 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8574 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8575 | such is available. (However, any hardware watchpoints that were\n\ | |
8576 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8577 | hardware.)"), |
8578 | NULL, | |
920d2a44 | 8579 | show_can_use_hw_watchpoints, |
85c07804 | 8580 | &setlist, &showlist); |
c906108c SS |
8581 | |
8582 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8583 | |
1bedd215 | 8584 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8585 | Breakpoint specific settings\n\ |
8586 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8587 | pending breakpoint behavior"), |
fa8d40ab JJ |
8588 | &breakpoint_set_cmdlist, "set breakpoint ", |
8589 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8590 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8591 | Breakpoint specific settings\n\ |
8592 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8593 | pending breakpoint behavior"), |
fa8d40ab JJ |
8594 | &breakpoint_show_cmdlist, "show breakpoint ", |
8595 | 0/*allow-unknown*/, &showlist); | |
8596 | ||
7915a72c AC |
8597 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8598 | &pending_break_support, _("\ | |
8599 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8600 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8601 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8602 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8603 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8604 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8605 | NULL, |
920d2a44 | 8606 | show_pending_break_support, |
6e1d7d6c AC |
8607 | &breakpoint_set_cmdlist, |
8608 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8609 | |
8610 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8611 | |
8612 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8613 | &automatic_hardware_breakpoints, _("\ | |
8614 | Set automatic usage of hardware breakpoints."), _("\ | |
8615 | Show automatic usage of hardware breakpoints."), _("\ | |
8616 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8617 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8618 | a warning will be emitted for such breakpoints."), | |
8619 | NULL, | |
8620 | show_automatic_hardware_breakpoints, | |
8621 | &breakpoint_set_cmdlist, | |
8622 | &breakpoint_show_cmdlist); | |
74960c60 VP |
8623 | |
8624 | add_setshow_boolean_cmd ("always-inserted", class_support, | |
8625 | &always_inserted_mode, _("\ | |
8626 | Set mode for inserting breakpoints."), _("\ | |
8627 | Show mode for inserting breakpoints."), _("\ | |
8628 | When this mode is off (which is the default), breakpoints are inserted in\n\ | |
8629 | inferior when it is resumed, and removed when execution stops. When this\n\ | |
8630 | mode is on, breakpoints are inserted immediately and removed only when\n\ | |
8631 | the user deletes the breakpoint."), | |
8632 | NULL, | |
8633 | &show_always_inserted_mode, | |
8634 | &breakpoint_set_cmdlist, | |
8635 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8636 | |
8637 | automatic_hardware_breakpoints = 1; | |
c906108c | 8638 | } |