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 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
4c38e0a4 | 5 | 2008, 2009, 2010 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" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
c906108c | 64 | |
1042e4c0 SS |
65 | /* readline include files */ |
66 | #include "readline/readline.h" | |
67 | #include "readline/history.h" | |
68 | ||
69 | /* readline defines this. */ | |
70 | #undef savestring | |
71 | ||
034dad6f | 72 | #include "mi/mi-common.h" |
104c1213 | 73 | |
44feb3ce TT |
74 | /* Arguments to pass as context to some catch command handlers. */ |
75 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
76 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 77 | |
44feb3ce | 78 | /* Prototypes for local functions. */ |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_once_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void disable_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_command (char *, int); |
c906108c | 87 | |
95a42b64 TT |
88 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
89 | void *), | |
90 | void *); | |
c906108c | 91 | |
a14ed312 | 92 | static void ignore_command (char *, int); |
c906108c | 93 | |
4efb68b1 | 94 | static int breakpoint_re_set_one (void *); |
c906108c | 95 | |
a14ed312 | 96 | static void clear_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void catch_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void watch_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 103 | |
98deb0da | 104 | static void break_command_1 (char *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void mention (struct breakpoint *); |
c906108c | 107 | |
63c252f8 PM |
108 | /* This function is used in gdbtk sources and thus can not be made static. */ |
109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
76897487 KB |
113 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
114 | ||
a6d9a66e UW |
115 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
116 | CORE_ADDR bpaddr, | |
88f7da05 | 117 | enum bptype bptype); |
76897487 | 118 | |
6c95b8df PA |
119 | static void describe_other_breakpoints (struct gdbarch *, |
120 | struct program_space *, CORE_ADDR, | |
5af949e3 | 121 | struct obj_section *, int); |
c906108c | 122 | |
6c95b8df PA |
123 | static int breakpoint_address_match (struct address_space *aspace1, |
124 | CORE_ADDR addr1, | |
125 | struct address_space *aspace2, | |
126 | CORE_ADDR addr2); | |
127 | ||
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
a14ed312 | 131 | static void breakpoints_info (char *, int); |
c906108c | 132 | |
d77f58be SS |
133 | static void watchpoints_info (char *, int); |
134 | ||
135 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 136 | |
89f9893c | 137 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 138 | |
4efb68b1 | 139 | static int breakpoint_cond_eval (void *); |
c906108c | 140 | |
4efb68b1 | 141 | static void cleanup_executing_breakpoints (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void commands_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void condition_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static int get_number_trailer (char **, int); |
c906108c | 148 | |
c5aa993b JM |
149 | typedef enum |
150 | { | |
151 | mark_inserted, | |
152 | mark_uninserted | |
153 | } | |
154 | insertion_state_t; | |
c906108c | 155 | |
0bde7532 | 156 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 157 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 158 | |
a14ed312 | 159 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
160 | |
161 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 162 | |
4efb68b1 | 163 | static int watchpoint_check (void *); |
c906108c | 164 | |
a14ed312 | 165 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_breakpoint_used_count (void); |
c906108c | 168 | |
a14ed312 | 169 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 170 | |
a14ed312 | 171 | static void hbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void thbreak_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void watch_command_1 (char *, int, int); |
c906108c | 176 | |
a14ed312 | 177 | static void rwatch_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void awatch_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 182 | |
a14ed312 | 183 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 190 | |
d85310f7 MS |
191 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
192 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 193 | |
a14ed312 | 194 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 195 | |
a14ed312 | 196 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 197 | |
6c95b8df PA |
198 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
199 | CORE_ADDR pc); | |
1aafd4da | 200 | |
fe3f5fa8 VP |
201 | static void free_bp_location (struct bp_location *loc); |
202 | ||
39d61571 | 203 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 204 | |
b60e7edf | 205 | static void update_global_location_list (int); |
a5606eee | 206 | |
b60e7edf | 207 | static void update_global_location_list_nothrow (int); |
74960c60 | 208 | |
d77f58be | 209 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 210 | |
d77f58be | 211 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 212 | |
74960c60 | 213 | static void insert_breakpoint_locations (void); |
a5606eee | 214 | |
a96d9b2e SDJ |
215 | static int syscall_catchpoint_p (struct breakpoint *b); |
216 | ||
1042e4c0 SS |
217 | static void tracepoints_info (char *, int); |
218 | ||
219 | static void delete_trace_command (char *, int); | |
220 | ||
221 | static void enable_trace_command (char *, int); | |
222 | ||
223 | static void disable_trace_command (char *, int); | |
224 | ||
225 | static void trace_pass_command (char *, int); | |
226 | ||
5cea2a26 PA |
227 | /* A reference-counted struct command_line. This lets multiple |
228 | breakpoints share a single command list. */ | |
229 | struct counted_command_line | |
230 | { | |
231 | /* The reference count. */ | |
232 | int refc; | |
233 | ||
234 | /* The command list. */ | |
235 | struct command_line *commands; | |
236 | }; | |
237 | ||
238 | struct command_line * | |
239 | breakpoint_commands (struct breakpoint *b) | |
240 | { | |
241 | return b->commands ? b->commands->commands : NULL; | |
242 | } | |
3daf8fe5 | 243 | |
f3b1572e PA |
244 | /* Flag indicating that a command has proceeded the inferior past the |
245 | current breakpoint. */ | |
246 | ||
247 | static int breakpoint_proceeded; | |
248 | ||
2cec12e5 AR |
249 | static const char * |
250 | bpdisp_text (enum bpdisp disp) | |
251 | { | |
252 | /* NOTE: the following values are a part of MI protocol and represent | |
253 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
254 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
cc59ec59 | 255 | |
2cec12e5 AR |
256 | return bpdisps[(int) disp]; |
257 | } | |
c906108c | 258 | |
2cec12e5 | 259 | /* Prototypes for exported functions. */ |
c906108c SS |
260 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
261 | if such is available. */ | |
262 | static int can_use_hw_watchpoints; | |
263 | ||
920d2a44 AC |
264 | static void |
265 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
266 | struct cmd_list_element *c, | |
267 | const char *value) | |
268 | { | |
269 | fprintf_filtered (file, _("\ | |
270 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
271 | value); | |
272 | } | |
273 | ||
fa8d40ab JJ |
274 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
275 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
276 | for unrecognized breakpoint locations. | |
277 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
278 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
279 | static void |
280 | show_pending_break_support (struct ui_file *file, int from_tty, | |
281 | struct cmd_list_element *c, | |
282 | const char *value) | |
283 | { | |
284 | fprintf_filtered (file, _("\ | |
285 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
286 | value); | |
287 | } | |
fa8d40ab | 288 | |
765dc015 VP |
289 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
290 | set with "break" but falling in read-only memory. | |
291 | If 0, gdb will warn about such breakpoints, but won't automatically | |
292 | use hardware breakpoints. */ | |
293 | static int automatic_hardware_breakpoints; | |
294 | static void | |
295 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
296 | struct cmd_list_element *c, | |
297 | const char *value) | |
298 | { | |
299 | fprintf_filtered (file, _("\ | |
300 | Automatic usage of hardware breakpoints is %s.\n"), | |
301 | value); | |
302 | } | |
303 | ||
33e5cbd6 PA |
304 | /* If on, gdb will keep breakpoints inserted even as inferior is |
305 | stopped, and immediately insert any new breakpoints. If off, gdb | |
306 | will insert breakpoints into inferior only when resuming it, and | |
307 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
308 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
309 | ||
310 | static const char always_inserted_auto[] = "auto"; | |
311 | static const char always_inserted_on[] = "on"; | |
312 | static const char always_inserted_off[] = "off"; | |
313 | static const char *always_inserted_enums[] = { | |
314 | always_inserted_auto, | |
315 | always_inserted_off, | |
316 | always_inserted_on, | |
317 | NULL | |
318 | }; | |
319 | static const char *always_inserted_mode = always_inserted_auto; | |
320 | static void | |
74960c60 | 321 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 322 | struct cmd_list_element *c, const char *value) |
74960c60 | 323 | { |
33e5cbd6 PA |
324 | if (always_inserted_mode == always_inserted_auto) |
325 | fprintf_filtered (file, _("\ | |
326 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
327 | value, | |
328 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
329 | else | |
330 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
331 | } |
332 | ||
33e5cbd6 PA |
333 | int |
334 | breakpoints_always_inserted_mode (void) | |
335 | { | |
336 | return (always_inserted_mode == always_inserted_on | |
337 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
338 | } | |
765dc015 | 339 | |
a14ed312 | 340 | void _initialize_breakpoint (void); |
c906108c | 341 | |
c906108c SS |
342 | /* Are we executing breakpoint commands? */ |
343 | static int executing_breakpoint_commands; | |
344 | ||
c02f5703 MS |
345 | /* Are overlay event breakpoints enabled? */ |
346 | static int overlay_events_enabled; | |
347 | ||
c906108c SS |
348 | /* Walk the following statement or block through all breakpoints. |
349 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
350 | breakpoint. */ | |
351 | ||
5c44784c | 352 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 353 | |
5c44784c JM |
354 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
355 | for (B = breakpoint_chain; \ | |
356 | B ? (TMP=B->next, 1): 0; \ | |
357 | B = TMP) | |
c906108c | 358 | |
876fa593 JK |
359 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
360 | provided so update_global_location_list must not be called while executing | |
361 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 362 | |
876fa593 JK |
363 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
364 | for (BP_TMP = bp_location; \ | |
365 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
366 | BP_TMP++) | |
7cc221ef | 367 | |
1042e4c0 SS |
368 | /* Iterator for tracepoints only. */ |
369 | ||
370 | #define ALL_TRACEPOINTS(B) \ | |
371 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 372 | if (is_tracepoint (B)) |
1042e4c0 | 373 | |
7cc221ef | 374 | /* Chains of all breakpoints defined. */ |
c906108c SS |
375 | |
376 | struct breakpoint *breakpoint_chain; | |
377 | ||
876fa593 JK |
378 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
379 | ||
380 | static struct bp_location **bp_location; | |
381 | ||
382 | /* Number of elements of BP_LOCATION. */ | |
383 | ||
384 | static unsigned bp_location_count; | |
385 | ||
386 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
387 | for the current elements of BP_LOCATION which get a valid result from | |
388 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
389 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
390 | ||
391 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
392 | ||
393 | /* Maximum offset plus alignment between | |
394 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
395 | the current elements of BP_LOCATION which get a valid result from | |
396 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
397 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
398 | ||
399 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 400 | |
20874c92 | 401 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 402 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
403 | may still be reported by a target. */ |
404 | VEC(bp_location_p) *moribund_locations = NULL; | |
405 | ||
c906108c SS |
406 | /* Number of last breakpoint made. */ |
407 | ||
95a42b64 TT |
408 | static int breakpoint_count; |
409 | ||
86b17b60 PA |
410 | /* The value of `breakpoint_count' before the last command that |
411 | created breakpoints. If the last (break-like) command created more | |
412 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
413 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
414 | static int prev_breakpoint_count; | |
c906108c | 415 | |
1042e4c0 SS |
416 | /* Number of last tracepoint made. */ |
417 | ||
95a42b64 | 418 | static int tracepoint_count; |
1042e4c0 | 419 | |
6149aea9 PA |
420 | static struct cmd_list_element *breakpoint_set_cmdlist; |
421 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
422 | static struct cmd_list_element *save_cmdlist; | |
423 | ||
468d015d JJ |
424 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
425 | static int | |
426 | breakpoint_enabled (struct breakpoint *b) | |
427 | { | |
0d381245 | 428 | return (b->enable_state == bp_enabled); |
468d015d JJ |
429 | } |
430 | ||
c906108c SS |
431 | /* Set breakpoint count to NUM. */ |
432 | ||
95a42b64 | 433 | static void |
fba45db2 | 434 | set_breakpoint_count (int num) |
c906108c | 435 | { |
86b17b60 | 436 | prev_breakpoint_count = breakpoint_count; |
c906108c | 437 | breakpoint_count = num; |
4fa62494 | 438 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
439 | } |
440 | ||
86b17b60 PA |
441 | /* Used by `start_rbreak_breakpoints' below, to record the current |
442 | breakpoint count before "rbreak" creates any breakpoint. */ | |
443 | static int rbreak_start_breakpoint_count; | |
444 | ||
95a42b64 TT |
445 | /* Called at the start an "rbreak" command to record the first |
446 | breakpoint made. */ | |
86b17b60 | 447 | |
95a42b64 TT |
448 | void |
449 | start_rbreak_breakpoints (void) | |
450 | { | |
86b17b60 | 451 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
452 | } |
453 | ||
454 | /* Called at the end of an "rbreak" command to record the last | |
455 | breakpoint made. */ | |
86b17b60 | 456 | |
95a42b64 TT |
457 | void |
458 | end_rbreak_breakpoints (void) | |
459 | { | |
86b17b60 | 460 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
461 | } |
462 | ||
c906108c SS |
463 | /* Used in run_command to zero the hit count when a new run starts. */ |
464 | ||
465 | void | |
fba45db2 | 466 | clear_breakpoint_hit_counts (void) |
c906108c SS |
467 | { |
468 | struct breakpoint *b; | |
469 | ||
470 | ALL_BREAKPOINTS (b) | |
471 | b->hit_count = 0; | |
472 | } | |
473 | ||
9add0f1b TT |
474 | /* Allocate a new counted_command_line with reference count of 1. |
475 | The new structure owns COMMANDS. */ | |
476 | ||
477 | static struct counted_command_line * | |
478 | alloc_counted_command_line (struct command_line *commands) | |
479 | { | |
480 | struct counted_command_line *result | |
481 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 482 | |
9add0f1b TT |
483 | result->refc = 1; |
484 | result->commands = commands; | |
485 | return result; | |
486 | } | |
487 | ||
488 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
489 | ||
490 | static void | |
491 | incref_counted_command_line (struct counted_command_line *cmd) | |
492 | { | |
493 | if (cmd) | |
494 | ++cmd->refc; | |
495 | } | |
496 | ||
497 | /* Decrement reference count. If the reference count reaches 0, | |
498 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
499 | nothing if *CMDP is NULL. */ | |
500 | ||
501 | static void | |
502 | decref_counted_command_line (struct counted_command_line **cmdp) | |
503 | { | |
504 | if (*cmdp) | |
505 | { | |
506 | if (--(*cmdp)->refc == 0) | |
507 | { | |
508 | free_command_lines (&(*cmdp)->commands); | |
509 | xfree (*cmdp); | |
510 | } | |
511 | *cmdp = NULL; | |
512 | } | |
513 | } | |
514 | ||
515 | /* A cleanup function that calls decref_counted_command_line. */ | |
516 | ||
517 | static void | |
518 | do_cleanup_counted_command_line (void *arg) | |
519 | { | |
520 | decref_counted_command_line (arg); | |
521 | } | |
522 | ||
523 | /* Create a cleanup that calls decref_counted_command_line on the | |
524 | argument. */ | |
525 | ||
526 | static struct cleanup * | |
527 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
528 | { | |
529 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
530 | } | |
531 | ||
c906108c SS |
532 | /* Default address, symtab and line to put a breakpoint at |
533 | for "break" command with no arg. | |
534 | if default_breakpoint_valid is zero, the other three are | |
535 | not valid, and "break" with no arg is an error. | |
536 | ||
537 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
538 | ||
539 | int default_breakpoint_valid; | |
540 | CORE_ADDR default_breakpoint_address; | |
541 | struct symtab *default_breakpoint_symtab; | |
542 | int default_breakpoint_line; | |
6c95b8df PA |
543 | struct program_space *default_breakpoint_pspace; |
544 | ||
c906108c SS |
545 | \f |
546 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
547 | Advance *PP after the string and any trailing whitespace. | |
548 | ||
549 | Currently the string can either be a number or "$" followed by the name | |
550 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 551 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
552 | |
553 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
554 | |
555 | TRAILER is a character which can be found after the number; most | |
556 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 557 | static int |
fba45db2 | 558 | get_number_trailer (char **pp, int trailer) |
c906108c | 559 | { |
5c44784c | 560 | int retval = 0; /* default */ |
c906108c SS |
561 | char *p = *pp; |
562 | ||
563 | if (p == NULL) | |
564 | /* Empty line means refer to the last breakpoint. */ | |
565 | return breakpoint_count; | |
566 | else if (*p == '$') | |
567 | { | |
568 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 569 | to pass to lookup_internalvar(). */ |
c906108c SS |
570 | char *varname; |
571 | char *start = ++p; | |
4fa62494 | 572 | LONGEST val; |
c906108c SS |
573 | |
574 | while (isalnum (*p) || *p == '_') | |
575 | p++; | |
576 | varname = (char *) alloca (p - start + 1); | |
577 | strncpy (varname, start, p - start); | |
578 | varname[p - start] = '\0'; | |
4fa62494 UW |
579 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
580 | retval = (int) val; | |
5c44784c JM |
581 | else |
582 | { | |
a3f17187 | 583 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
584 | retval = 0; |
585 | } | |
c906108c SS |
586 | } |
587 | else | |
588 | { | |
589 | if (*p == '-') | |
590 | ++p; | |
591 | while (*p >= '0' && *p <= '9') | |
592 | ++p; | |
593 | if (p == *pp) | |
594 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
595 | { |
596 | /* Skip non-numeric token */ | |
597 | while (*p && !isspace((int) *p)) | |
598 | ++p; | |
599 | /* Return zero, which caller must interpret as error. */ | |
600 | retval = 0; | |
601 | } | |
602 | else | |
603 | retval = atoi (*pp); | |
604 | } | |
605 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
606 | { | |
607 | /* Trailing junk: return 0 and let caller print error msg. */ | |
608 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
609 | ++p; | |
610 | retval = 0; | |
c906108c | 611 | } |
c906108c SS |
612 | while (isspace (*p)) |
613 | p++; | |
614 | *pp = p; | |
615 | return retval; | |
616 | } | |
5c44784c | 617 | |
11cf8741 | 618 | |
5c44784c JM |
619 | /* Like get_number_trailer, but don't allow a trailer. */ |
620 | int | |
fba45db2 | 621 | get_number (char **pp) |
5c44784c JM |
622 | { |
623 | return get_number_trailer (pp, '\0'); | |
624 | } | |
625 | ||
626 | /* Parse a number or a range. | |
627 | * A number will be of the form handled by get_number. | |
628 | * A range will be of the form <number1> - <number2>, and | |
629 | * will represent all the integers between number1 and number2, | |
630 | * inclusive. | |
631 | * | |
632 | * While processing a range, this fuction is called iteratively; | |
633 | * At each call it will return the next value in the range. | |
634 | * | |
635 | * At the beginning of parsing a range, the char pointer PP will | |
636 | * be advanced past <number1> and left pointing at the '-' token. | |
637 | * Subsequent calls will not advance the pointer until the range | |
638 | * is completed. The call that completes the range will advance | |
639 | * pointer PP past <number2>. | |
640 | */ | |
641 | ||
642 | int | |
fba45db2 | 643 | get_number_or_range (char **pp) |
5c44784c JM |
644 | { |
645 | static int last_retval, end_value; | |
646 | static char *end_ptr; | |
647 | static int in_range = 0; | |
648 | ||
649 | if (**pp != '-') | |
650 | { | |
651 | /* Default case: pp is pointing either to a solo number, | |
652 | or to the first number of a range. */ | |
653 | last_retval = get_number_trailer (pp, '-'); | |
654 | if (**pp == '-') | |
655 | { | |
656 | char **temp; | |
657 | ||
658 | /* This is the start of a range (<number1> - <number2>). | |
659 | Skip the '-', parse and remember the second number, | |
660 | and also remember the end of the final token. */ | |
661 | ||
662 | temp = &end_ptr; | |
663 | end_ptr = *pp + 1; | |
664 | while (isspace ((int) *end_ptr)) | |
665 | end_ptr++; /* skip white space */ | |
666 | end_value = get_number (temp); | |
667 | if (end_value < last_retval) | |
668 | { | |
8a3fe4f8 | 669 | error (_("inverted range")); |
5c44784c JM |
670 | } |
671 | else if (end_value == last_retval) | |
672 | { | |
673 | /* degenerate range (number1 == number2). Advance the | |
674 | token pointer so that the range will be treated as a | |
675 | single number. */ | |
676 | *pp = end_ptr; | |
677 | } | |
678 | else | |
679 | in_range = 1; | |
680 | } | |
681 | } | |
682 | else if (! in_range) | |
8a3fe4f8 | 683 | error (_("negative value")); |
5c44784c JM |
684 | else |
685 | { | |
686 | /* pp points to the '-' that betokens a range. All | |
687 | number-parsing has already been done. Return the next | |
688 | integer value (one greater than the saved previous value). | |
689 | Do not advance the token pointer 'pp' until the end of range | |
690 | is reached. */ | |
691 | ||
692 | if (++last_retval == end_value) | |
693 | { | |
694 | /* End of range reached; advance token pointer. */ | |
695 | *pp = end_ptr; | |
696 | in_range = 0; | |
697 | } | |
698 | } | |
699 | return last_retval; | |
700 | } | |
701 | ||
48cb2d85 VP |
702 | /* Return the breakpoint with the specified number, or NULL |
703 | if the number does not refer to an existing breakpoint. */ | |
704 | ||
705 | struct breakpoint * | |
706 | get_breakpoint (int num) | |
707 | { | |
708 | struct breakpoint *b; | |
709 | ||
710 | ALL_BREAKPOINTS (b) | |
711 | if (b->number == num) | |
712 | return b; | |
713 | ||
714 | return NULL; | |
715 | } | |
5c44784c | 716 | |
c906108c | 717 | \f |
adc36818 PM |
718 | |
719 | void | |
720 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
721 | int from_tty) | |
722 | { | |
723 | struct bp_location *loc = b->loc; | |
724 | ||
725 | for (; loc; loc = loc->next) | |
726 | { | |
727 | xfree (loc->cond); | |
728 | loc->cond = NULL; | |
729 | } | |
730 | xfree (b->cond_string); | |
731 | b->cond_string = NULL; | |
732 | xfree (b->cond_exp); | |
733 | b->cond_exp = NULL; | |
734 | ||
735 | if (*exp == 0) | |
736 | { | |
737 | if (from_tty) | |
738 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
739 | } | |
740 | else | |
741 | { | |
742 | char *arg = exp; | |
cc59ec59 | 743 | |
adc36818 PM |
744 | /* I don't know if it matters whether this is the string the user |
745 | typed in or the decompiled expression. */ | |
746 | b->cond_string = xstrdup (arg); | |
747 | b->condition_not_parsed = 0; | |
748 | ||
749 | if (is_watchpoint (b)) | |
750 | { | |
751 | innermost_block = NULL; | |
752 | arg = exp; | |
753 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
754 | if (*arg) | |
755 | error (_("Junk at end of expression")); | |
756 | b->cond_exp_valid_block = innermost_block; | |
757 | } | |
758 | else | |
759 | { | |
760 | for (loc = b->loc; loc; loc = loc->next) | |
761 | { | |
762 | arg = exp; | |
763 | loc->cond = | |
764 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
765 | if (*arg) | |
766 | error (_("Junk at end of expression")); | |
767 | } | |
768 | } | |
769 | } | |
770 | breakpoints_changed (); | |
771 | observer_notify_breakpoint_modified (b->number); | |
772 | } | |
773 | ||
c906108c SS |
774 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
775 | ||
776 | static void | |
fba45db2 | 777 | condition_command (char *arg, int from_tty) |
c906108c | 778 | { |
52f0bd74 | 779 | struct breakpoint *b; |
c906108c | 780 | char *p; |
52f0bd74 | 781 | int bnum; |
c906108c SS |
782 | |
783 | if (arg == 0) | |
e2e0b3e5 | 784 | error_no_arg (_("breakpoint number")); |
c906108c SS |
785 | |
786 | p = arg; | |
787 | bnum = get_number (&p); | |
5c44784c | 788 | if (bnum == 0) |
8a3fe4f8 | 789 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
790 | |
791 | ALL_BREAKPOINTS (b) | |
792 | if (b->number == bnum) | |
2f069f6f | 793 | { |
2566ad2d | 794 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
795 | return; |
796 | } | |
c906108c | 797 | |
8a3fe4f8 | 798 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
799 | } |
800 | ||
a7bdde9e VP |
801 | /* Check that COMMAND do not contain commands that are suitable |
802 | only for tracepoints and not suitable for ordinary breakpoints. | |
803 | Throw if any such commands is found. | |
804 | */ | |
805 | static void | |
806 | check_no_tracepoint_commands (struct command_line *commands) | |
807 | { | |
808 | struct command_line *c; | |
cc59ec59 | 809 | |
a7bdde9e VP |
810 | for (c = commands; c; c = c->next) |
811 | { | |
812 | int i; | |
813 | ||
814 | if (c->control_type == while_stepping_control) | |
815 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
816 | ||
817 | for (i = 0; i < c->body_count; ++i) | |
818 | check_no_tracepoint_commands ((c->body_list)[i]); | |
819 | ||
820 | /* Not that command parsing removes leading whitespace and comment | |
821 | lines and also empty lines. So, we only need to check for | |
822 | command directly. */ | |
823 | if (strstr (c->line, "collect ") == c->line) | |
824 | error (_("The 'collect' command can only be used for tracepoints")); | |
825 | ||
51661e93 VP |
826 | if (strstr (c->line, "teval ") == c->line) |
827 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
828 | } |
829 | } | |
830 | ||
d77f58be SS |
831 | /* Encapsulate tests for different types of tracepoints. */ |
832 | ||
a7bdde9e | 833 | int |
d77f58be | 834 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 835 | { |
d77f58be | 836 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); |
a7bdde9e | 837 | } |
d77f58be | 838 | |
95a42b64 TT |
839 | /* A helper function that validsates that COMMANDS are valid for a |
840 | breakpoint. This function will throw an exception if a problem is | |
841 | found. */ | |
48cb2d85 | 842 | |
95a42b64 TT |
843 | static void |
844 | validate_commands_for_breakpoint (struct breakpoint *b, | |
845 | struct command_line *commands) | |
48cb2d85 | 846 | { |
d77f58be | 847 | if (is_tracepoint (b)) |
a7bdde9e VP |
848 | { |
849 | /* We need to verify that each top-level element of commands | |
850 | is valid for tracepoints, that there's at most one while-stepping | |
851 | element, and that while-stepping's body has valid tracing commands | |
852 | excluding nested while-stepping. */ | |
853 | struct command_line *c; | |
854 | struct command_line *while_stepping = 0; | |
855 | for (c = commands; c; c = c->next) | |
856 | { | |
a7bdde9e VP |
857 | if (c->control_type == while_stepping_control) |
858 | { | |
859 | if (b->type == bp_fast_tracepoint) | |
860 | error (_("The 'while-stepping' command cannot be used for fast tracepoint")); | |
861 | ||
862 | if (while_stepping) | |
863 | error (_("The 'while-stepping' command can be used only once")); | |
864 | else | |
865 | while_stepping = c; | |
866 | } | |
867 | } | |
868 | if (while_stepping) | |
869 | { | |
870 | struct command_line *c2; | |
871 | ||
872 | gdb_assert (while_stepping->body_count == 1); | |
873 | c2 = while_stepping->body_list[0]; | |
874 | for (; c2; c2 = c2->next) | |
875 | { | |
a7bdde9e VP |
876 | if (c2->control_type == while_stepping_control) |
877 | error (_("The 'while-stepping' command cannot be nested")); | |
878 | } | |
879 | } | |
880 | } | |
881 | else | |
882 | { | |
883 | check_no_tracepoint_commands (commands); | |
884 | } | |
95a42b64 TT |
885 | } |
886 | ||
887 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, | |
888 | validate that only allowed commands are included. | |
889 | */ | |
890 | ||
891 | void | |
892 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
893 | { | |
894 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 895 | |
9add0f1b TT |
896 | decref_counted_command_line (&b->commands); |
897 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
898 | breakpoints_changed (); |
899 | observer_notify_breakpoint_modified (b->number); | |
900 | } | |
901 | ||
95a42b64 TT |
902 | void |
903 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
904 | { |
905 | struct breakpoint *b = closure; | |
cc59ec59 | 906 | |
a7bdde9e VP |
907 | validate_actionline (&line, b); |
908 | } | |
909 | ||
95a42b64 TT |
910 | /* A structure used to pass information through |
911 | map_breakpoint_numbers. */ | |
912 | ||
913 | struct commands_info | |
914 | { | |
915 | /* True if the command was typed at a tty. */ | |
916 | int from_tty; | |
86b17b60 PA |
917 | |
918 | /* The breakpoint range spec. */ | |
919 | char *arg; | |
920 | ||
95a42b64 TT |
921 | /* Non-NULL if the body of the commands are being read from this |
922 | already-parsed command. */ | |
923 | struct command_line *control; | |
86b17b60 | 924 | |
95a42b64 TT |
925 | /* The command lines read from the user, or NULL if they have not |
926 | yet been read. */ | |
927 | struct counted_command_line *cmd; | |
928 | }; | |
929 | ||
930 | /* A callback for map_breakpoint_numbers that sets the commands for | |
931 | commands_command. */ | |
932 | ||
c906108c | 933 | static void |
95a42b64 | 934 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 935 | { |
95a42b64 | 936 | struct commands_info *info = data; |
c906108c | 937 | |
95a42b64 TT |
938 | if (info->cmd == NULL) |
939 | { | |
940 | struct command_line *l; | |
5c44784c | 941 | |
95a42b64 TT |
942 | if (info->control != NULL) |
943 | l = copy_command_lines (info->control->body_list[0]); | |
944 | else | |
86b17b60 PA |
945 | { |
946 | struct cleanup *old_chain; | |
947 | char *str; | |
c5aa993b | 948 | |
86b17b60 PA |
949 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
950 | info->arg); | |
951 | ||
952 | old_chain = make_cleanup (xfree, str); | |
953 | ||
954 | l = read_command_lines (str, | |
955 | info->from_tty, 1, | |
d77f58be | 956 | (is_tracepoint (b) |
86b17b60 PA |
957 | ? check_tracepoint_command : 0), |
958 | b); | |
959 | ||
960 | do_cleanups (old_chain); | |
961 | } | |
a7bdde9e | 962 | |
95a42b64 TT |
963 | info->cmd = alloc_counted_command_line (l); |
964 | } | |
965 | ||
966 | /* If a breakpoint was on the list more than once, we don't need to | |
967 | do anything. */ | |
968 | if (b->commands != info->cmd) | |
969 | { | |
970 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
971 | incref_counted_command_line (info->cmd); | |
972 | decref_counted_command_line (&b->commands); | |
973 | b->commands = info->cmd; | |
974 | breakpoints_changed (); | |
975 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 976 | } |
95a42b64 TT |
977 | } |
978 | ||
979 | static void | |
980 | commands_command_1 (char *arg, int from_tty, struct command_line *control) | |
981 | { | |
982 | struct cleanup *cleanups; | |
983 | struct commands_info info; | |
984 | ||
985 | info.from_tty = from_tty; | |
986 | info.control = control; | |
987 | info.cmd = NULL; | |
988 | /* If we read command lines from the user, then `info' will hold an | |
989 | extra reference to the commands that we must clean up. */ | |
990 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
991 | ||
992 | if (arg == NULL || !*arg) | |
993 | { | |
86b17b60 PA |
994 | if (breakpoint_count - prev_breakpoint_count > 1) |
995 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count); | |
95a42b64 TT |
996 | else if (breakpoint_count > 0) |
997 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
998 | else |
999 | { | |
1000 | /* So that we don't try to free the incoming non-NULL | |
1001 | argument in the cleanup below. Mapping breakpoint | |
1002 | numbers will fail in this case. */ | |
1003 | arg = NULL; | |
1004 | } | |
95a42b64 | 1005 | } |
9766ced4 SS |
1006 | else |
1007 | /* The command loop has some static state, so we need to preserve | |
1008 | our argument. */ | |
1009 | arg = xstrdup (arg); | |
86b17b60 PA |
1010 | |
1011 | if (arg != NULL) | |
1012 | make_cleanup (xfree, arg); | |
1013 | ||
1014 | info.arg = arg; | |
95a42b64 TT |
1015 | |
1016 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1017 | ||
1018 | if (info.cmd == NULL) | |
1019 | error (_("No breakpoints specified.")); | |
1020 | ||
1021 | do_cleanups (cleanups); | |
1022 | } | |
1023 | ||
1024 | static void | |
1025 | commands_command (char *arg, int from_tty) | |
1026 | { | |
1027 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1028 | } |
40c03ae8 EZ |
1029 | |
1030 | /* Like commands_command, but instead of reading the commands from | |
1031 | input stream, takes them from an already parsed command structure. | |
1032 | ||
1033 | This is used by cli-script.c to DTRT with breakpoint commands | |
1034 | that are part of if and while bodies. */ | |
1035 | enum command_control_type | |
1036 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1037 | { | |
95a42b64 TT |
1038 | commands_command_1 (arg, 0, cmd); |
1039 | return simple_control; | |
40c03ae8 | 1040 | } |
876fa593 JK |
1041 | |
1042 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1043 | ||
1044 | static int | |
1045 | bp_location_has_shadow (struct bp_location *bl) | |
1046 | { | |
1047 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1048 | return 0; | |
1049 | if (!bl->inserted) | |
1050 | return 0; | |
1051 | if (bl->target_info.shadow_len == 0) | |
1052 | /* bp isn't valid, or doesn't shadow memory. */ | |
1053 | return 0; | |
1054 | return 1; | |
1055 | } | |
1056 | ||
8defab1a | 1057 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1058 | by replacing any memory breakpoints with their shadowed contents. |
1059 | ||
1060 | The range of shadowed area by each bp_location is: | |
1061 | b->address - bp_location_placed_address_before_address_max | |
1062 | up to b->address + bp_location_shadow_len_after_address_max | |
1063 | The range we were requested to resolve shadows for is: | |
1064 | memaddr ... memaddr + len | |
1065 | Thus the safe cutoff boundaries for performance optimization are | |
1066 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
1067 | and: | |
1068 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 1069 | |
8defab1a DJ |
1070 | void |
1071 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1072 | { |
876fa593 JK |
1073 | /* Left boundary, right boundary and median element of our binary search. */ |
1074 | unsigned bc_l, bc_r, bc; | |
1075 | ||
1076 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
1077 | safe to report lower value but a failure to report higher one. */ | |
1078 | ||
1079 | bc_l = 0; | |
1080 | bc_r = bp_location_count; | |
1081 | while (bc_l + 1 < bc_r) | |
1082 | { | |
1083 | struct bp_location *b; | |
1084 | ||
1085 | bc = (bc_l + bc_r) / 2; | |
1086 | b = bp_location[bc]; | |
1087 | ||
1088 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
1089 | Then advance the left boundary only if we are sure the BC element can | |
1090 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
1091 | ||
1092 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
1093 | we cannot miss a breakpoint with its shadow range tail still reaching | |
1094 | MEMADDR. */ | |
c5aa993b | 1095 | |
876fa593 JK |
1096 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
1097 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
1098 | bc_l = bc; | |
1099 | else | |
1100 | bc_r = bc; | |
1101 | } | |
1102 | ||
1103 | /* Now do full processing of the found relevant range of elements. */ | |
1104 | ||
1105 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1106 | { |
876fa593 JK |
1107 | struct bp_location *b = bp_location[bc]; |
1108 | CORE_ADDR bp_addr = 0; | |
1109 | int bp_size = 0; | |
1110 | int bptoffset = 0; | |
1111 | ||
ffce0d52 | 1112 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1113 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
1114 | b->owner->number); |
1115 | ||
876fa593 JK |
1116 | /* Performance optimization: any futher element can no longer affect BUF |
1117 | content. */ | |
1118 | ||
1119 | if (b->address >= bp_location_placed_address_before_address_max | |
1120 | && memaddr + len <= b->address | |
1121 | - bp_location_placed_address_before_address_max) | |
1122 | break; | |
1123 | ||
1124 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 1125 | continue; |
6c95b8df PA |
1126 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
1127 | current_program_space->aspace, 0)) | |
1128 | continue; | |
1129 | ||
c5aa993b JM |
1130 | /* Addresses and length of the part of the breakpoint that |
1131 | we need to copy. */ | |
8181d85f DJ |
1132 | bp_addr = b->target_info.placed_address; |
1133 | bp_size = b->target_info.shadow_len; | |
8defab1a | 1134 | |
c5aa993b JM |
1135 | if (bp_addr + bp_size <= memaddr) |
1136 | /* The breakpoint is entirely before the chunk of memory we | |
1137 | are reading. */ | |
1138 | continue; | |
8defab1a | 1139 | |
c5aa993b JM |
1140 | if (bp_addr >= memaddr + len) |
1141 | /* The breakpoint is entirely after the chunk of memory we are | |
1142 | reading. */ | |
1143 | continue; | |
c5aa993b | 1144 | |
8defab1a DJ |
1145 | /* Offset within shadow_contents. */ |
1146 | if (bp_addr < memaddr) | |
1147 | { | |
1148 | /* Only copy the second part of the breakpoint. */ | |
1149 | bp_size -= memaddr - bp_addr; | |
1150 | bptoffset = memaddr - bp_addr; | |
1151 | bp_addr = memaddr; | |
1152 | } | |
c5aa993b | 1153 | |
8defab1a DJ |
1154 | if (bp_addr + bp_size > memaddr + len) |
1155 | { | |
1156 | /* Only copy the first part of the breakpoint. */ | |
1157 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1158 | } | |
c5aa993b | 1159 | |
8defab1a DJ |
1160 | memcpy (buf + bp_addr - memaddr, |
1161 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 1162 | } |
c906108c | 1163 | } |
c906108c | 1164 | \f |
c5aa993b | 1165 | |
687595f9 | 1166 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1167 | static void |
687595f9 DJ |
1168 | insert_catchpoint (struct ui_out *uo, void *args) |
1169 | { | |
1170 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1171 | |
fe798b75 JB |
1172 | gdb_assert (b->type == bp_catchpoint); |
1173 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1174 | ||
1175 | b->ops->insert (b); | |
687595f9 DJ |
1176 | } |
1177 | ||
60e1c644 PA |
1178 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1179 | ||
a5606eee | 1180 | static int |
d77f58be | 1181 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1182 | { |
1183 | return (bpt->type == bp_hardware_watchpoint | |
1184 | || bpt->type == bp_read_watchpoint | |
1185 | || bpt->type == bp_access_watchpoint); | |
1186 | } | |
7270d8f2 | 1187 | |
60e1c644 PA |
1188 | /* Return true if BPT is of any watchpoint kind, hardware or |
1189 | software. */ | |
1190 | ||
1191 | static int | |
d77f58be | 1192 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1193 | { |
1194 | return (is_hardware_watchpoint (bpt) | |
1195 | || bpt->type == bp_watchpoint); | |
1196 | } | |
1197 | ||
fa4727a6 DJ |
1198 | /* Find the current value of a watchpoint on EXP. Return the value in |
1199 | *VALP and *RESULTP and the chain of intermediate and final values | |
1200 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
1201 | not need them. | |
1202 | ||
ccc57cf9 | 1203 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
1204 | be set to NULL. *RESULTP may be a lazy value, if the result could |
1205 | not be read from memory. It is used to determine whether a value | |
1206 | is user-specified (we should watch the whole value) or intermediate | |
1207 | (we should watch only the bit used to locate the final value). | |
1208 | ||
1209 | If the final value, or any intermediate value, could not be read | |
1210 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
1211 | set to any referenced values. *VALP will never be a lazy value. | |
1212 | This is the value which we store in struct breakpoint. | |
1213 | ||
1214 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
1215 | value chain. The caller must free the values individually. If | |
1216 | VAL_CHAIN is NULL, all generated values will be left on the value | |
1217 | chain. */ | |
1218 | ||
1219 | static void | |
1220 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
1221 | struct value **resultp, struct value **val_chain) | |
1222 | { | |
1223 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 1224 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
1225 | |
1226 | *valp = NULL; | |
1227 | if (resultp) | |
1228 | *resultp = NULL; | |
1229 | if (val_chain) | |
1230 | *val_chain = NULL; | |
1231 | ||
1232 | /* Evaluate the expression. */ | |
1233 | mark = value_mark (); | |
1234 | result = NULL; | |
ccc57cf9 PA |
1235 | |
1236 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1237 | { | |
1238 | result = evaluate_expression (exp); | |
1239 | } | |
1240 | if (ex.reason < 0) | |
1241 | { | |
1242 | /* Ignore memory errors, we want watchpoints pointing at | |
1243 | inaccessible memory to still be created; otherwise, throw the | |
1244 | error to some higher catcher. */ | |
1245 | switch (ex.error) | |
1246 | { | |
1247 | case MEMORY_ERROR: | |
1248 | break; | |
1249 | default: | |
1250 | throw_exception (ex); | |
1251 | break; | |
1252 | } | |
1253 | } | |
1254 | ||
fa4727a6 DJ |
1255 | new_mark = value_mark (); |
1256 | if (mark == new_mark) | |
1257 | return; | |
1258 | if (resultp) | |
1259 | *resultp = result; | |
1260 | ||
1261 | /* Make sure it's not lazy, so that after the target stops again we | |
1262 | have a non-lazy previous value to compare with. */ | |
1263 | if (result != NULL | |
1264 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
1265 | *valp = result; | |
1266 | ||
1267 | if (val_chain) | |
1268 | { | |
1269 | /* Return the chain of intermediate values. We use this to | |
1270 | decide which addresses to watch. */ | |
1271 | *val_chain = new_mark; | |
1272 | value_release_to_mark (mark); | |
1273 | } | |
1274 | } | |
1275 | ||
f6bc2008 PA |
1276 | /* Assuming that B is a watchpoint: returns true if the current thread |
1277 | and its running state are safe to evaluate or update watchpoint B. | |
1278 | Watchpoints on local expressions need to be evaluated in the | |
1279 | context of the thread that was current when the watchpoint was | |
1280 | created, and, that thread needs to be stopped to be able to select | |
1281 | the correct frame context. Watchpoints on global expressions can | |
1282 | be evaluated on any thread, and in any state. It is presently left | |
1283 | to the target allowing memory accesses when threads are | |
1284 | running. */ | |
1285 | ||
1286 | static int | |
1287 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1288 | { | |
1289 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1290 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1291 | && !is_executing (inferior_ptid))); | |
1292 | } | |
1293 | ||
567e1b4e JB |
1294 | /* Assuming that B is a watchpoint: |
1295 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1296 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1297 | - Evaluate the condition if there is one, and store the result |
1298 | in b->loc->cond. | |
a5606eee VP |
1299 | - Update the list of values that must be watched in B->loc. |
1300 | ||
bfa149ac | 1301 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1302 | If this is local watchpoint that is out of scope, delete it. |
1303 | ||
1304 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1305 | + inserted on each stop here. Normal breakpoints must never be removed | |
1306 | because they might be missed by a running thread when debugging in non-stop | |
1307 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1308 | processed here) are specific to each LWP since they are stored in each LWP's | |
1309 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1310 | order to be able to modify its hardware watchpoints. | |
1311 | ||
1312 | Hardware watchpoints must be reset exactly once after being presented to the | |
1313 | user. It cannot be done sooner, because it would reset the data used to | |
1314 | present the watchpoint hit to the user. And it must not be done later | |
1315 | because it could display the same single watchpoint hit during multiple GDB | |
1316 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1317 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1318 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1319 | memory content has not changed. | |
1320 | ||
1321 | The following constraints influence the location where we can reset hardware | |
1322 | watchpoints: | |
1323 | ||
1324 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1325 | several times when GDB stops. | |
1326 | ||
1327 | [linux] | |
1328 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1329 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1330 | reason for stopping, and all the other hits are presented later, one after | |
1331 | the other, each time the user requests the execution to be resumed. | |
1332 | Execution is not resumed for the threads still having pending hit event | |
1333 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1334 | the inferior on the first stop the thread hit event is kept being reported | |
1335 | from its cached value by linux_nat_stopped_data_address until the real | |
1336 | thread resume happens after the watchpoint gets presented and thus its | |
1337 | LWP_INFO->STATUS gets reset. | |
1338 | ||
1339 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1340 | removal from inferior. */ | |
1341 | ||
b40ce68a | 1342 | static void |
a5606eee | 1343 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1344 | { |
a5606eee | 1345 | int within_current_scope; |
a5606eee | 1346 | struct frame_id saved_frame_id; |
66076460 | 1347 | int frame_saved; |
a5606eee | 1348 | |
f6bc2008 PA |
1349 | /* If this is a local watchpoint, we only want to check if the |
1350 | watchpoint frame is in scope if the current thread is the thread | |
1351 | that was used to create the watchpoint. */ | |
1352 | if (!watchpoint_in_thread_scope (b)) | |
1353 | return; | |
1354 | ||
876fa593 | 1355 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1356 | update_global_locations will eventually delete them and remove |
1357 | breakpoints if needed. */ | |
a5606eee VP |
1358 | b->loc = NULL; |
1359 | ||
1360 | if (b->disposition == disp_del_at_next_stop) | |
1361 | return; | |
1362 | ||
66076460 | 1363 | frame_saved = 0; |
a5606eee VP |
1364 | |
1365 | /* Determine if the watchpoint is within scope. */ | |
1366 | if (b->exp_valid_block == NULL) | |
1367 | within_current_scope = 1; | |
1368 | else | |
1369 | { | |
1370 | struct frame_info *fi; | |
66076460 DJ |
1371 | |
1372 | /* Save the current frame's ID so we can restore it after | |
1373 | evaluating the watchpoint expression on its own frame. */ | |
1374 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1375 | took a frame parameter, so that we didn't have to change the | |
1376 | selected frame. */ | |
1377 | frame_saved = 1; | |
1378 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1379 | ||
a5606eee VP |
1380 | fi = frame_find_by_id (b->watchpoint_frame); |
1381 | within_current_scope = (fi != NULL); | |
1382 | if (within_current_scope) | |
1383 | select_frame (fi); | |
1384 | } | |
1385 | ||
1386 | if (within_current_scope && reparse) | |
1387 | { | |
1388 | char *s; | |
1389 | if (b->exp) | |
1390 | { | |
1391 | xfree (b->exp); | |
1392 | b->exp = NULL; | |
1393 | } | |
1394 | s = b->exp_string; | |
1395 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1396 | /* If the meaning of expression itself changed, the old value is | |
1397 | no longer relevant. We don't want to report a watchpoint hit | |
1398 | to the user when the old value and the new value may actually | |
1399 | be completely different objects. */ | |
1400 | value_free (b->val); | |
fa4727a6 DJ |
1401 | b->val = NULL; |
1402 | b->val_valid = 0; | |
60e1c644 PA |
1403 | |
1404 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1405 | expression is stored in the breakpoint object, not in the | |
1406 | locations (re)created below. */ | |
1407 | if (b->cond_string != NULL) | |
1408 | { | |
1409 | if (b->cond_exp != NULL) | |
1410 | { | |
1411 | xfree (b->cond_exp); | |
1412 | b->cond_exp = NULL; | |
1413 | } | |
1414 | ||
1415 | s = b->cond_string; | |
1416 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1417 | } | |
a5606eee | 1418 | } |
a5606eee VP |
1419 | |
1420 | /* If we failed to parse the expression, for example because | |
1421 | it refers to a global variable in a not-yet-loaded shared library, | |
1422 | don't try to insert watchpoint. We don't automatically delete | |
1423 | such watchpoint, though, since failure to parse expression | |
1424 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1425 | if ( !target_has_execution) |
1426 | { | |
1427 | /* Without execution, memory can't change. No use to try and | |
1428 | set watchpoint locations. The watchpoint will be reset when | |
1429 | the target gains execution, through breakpoint_re_set. */ | |
1430 | } | |
1431 | else if (within_current_scope && b->exp) | |
a5606eee | 1432 | { |
fa4727a6 | 1433 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1434 | struct program_space *frame_pspace; |
a5606eee | 1435 | |
fa4727a6 | 1436 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1437 | |
a5606eee VP |
1438 | /* Avoid setting b->val if it's already set. The meaning of |
1439 | b->val is 'the last value' user saw, and we should update | |
1440 | it only if we reported that last value to user. As it | |
1441 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1442 | if (!b->val_valid) |
1443 | { | |
1444 | b->val = v; | |
1445 | b->val_valid = 1; | |
1446 | } | |
a5606eee | 1447 | |
db2ad4c3 JK |
1448 | /* Change the type of breakpoint between hardware assisted or an |
1449 | ordinary watchpoint depending on the hardware support and free | |
1450 | hardware slots. REPARSE is set when the inferior is started. */ | |
1451 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1452 | && reparse) | |
1453 | { | |
ca2d49e8 | 1454 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1455 | |
7b838ca2 TJB |
1456 | /* We need to determine how many resources are already used |
1457 | for all other hardware watchpoints to see if we still have | |
1458 | enough resources to also fit this watchpoint in as well. | |
1459 | To avoid the hw_watchpoint_used_count call below from counting | |
1460 | this watchpoint, make sure that it is marked as a software | |
1461 | watchpoint. */ | |
1462 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1463 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1464 | &other_type_used); | |
1465 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1466 | ||
ca2d49e8 | 1467 | if (!mem_cnt) |
db2ad4c3 JK |
1468 | b->type = bp_watchpoint; |
1469 | else | |
ca2d49e8 | 1470 | { |
d92524f1 | 1471 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1472 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1473 | if (target_resources_ok <= 0) | |
1474 | b->type = bp_watchpoint; | |
1475 | else | |
1476 | b->type = bp_hardware_watchpoint; | |
1477 | } | |
db2ad4c3 JK |
1478 | } |
1479 | ||
2d134ed3 PA |
1480 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1481 | ||
a5606eee | 1482 | /* Look at each value on the value chain. */ |
fa4727a6 | 1483 | for (v = val_chain; v; v = next) |
a5606eee VP |
1484 | { |
1485 | /* If it's a memory location, and GDB actually needed | |
1486 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1487 | must watch it. If the first value returned is |
1488 | still lazy, that means an error occurred reading it; | |
1489 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1490 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1491 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1492 | { |
1493 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1494 | |
a5606eee VP |
1495 | /* We only watch structs and arrays if user asked |
1496 | for it explicitly, never if they just happen to | |
1497 | appear in the middle of some value chain. */ | |
fa4727a6 | 1498 | if (v == result |
a5606eee VP |
1499 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1500 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1501 | { | |
1502 | CORE_ADDR addr; | |
1503 | int len, type; | |
1504 | struct bp_location *loc, **tmp; | |
1505 | ||
42ae5230 | 1506 | addr = value_address (v); |
a5606eee VP |
1507 | len = TYPE_LENGTH (value_type (v)); |
1508 | type = hw_write; | |
1509 | if (b->type == bp_read_watchpoint) | |
1510 | type = hw_read; | |
1511 | else if (b->type == bp_access_watchpoint) | |
1512 | type = hw_access; | |
1513 | ||
39d61571 | 1514 | loc = allocate_bp_location (b); |
a5606eee VP |
1515 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1516 | ; | |
1517 | *tmp = loc; | |
a6d9a66e | 1518 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1519 | |
1520 | loc->pspace = frame_pspace; | |
a5606eee VP |
1521 | loc->address = addr; |
1522 | loc->length = len; | |
1523 | loc->watchpoint_type = type; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | next = value_next (v); | |
1528 | if (v != b->val) | |
1529 | value_free (v); | |
1530 | } | |
1531 | ||
c7437ca6 PA |
1532 | /* If a software watchpoint is not watching any memory, then the |
1533 | above left it without any location set up. But, | |
1534 | bpstat_stop_status requires a location to be able to report | |
1535 | stops, so make sure there's at least a dummy one. */ | |
1536 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1537 | { | |
1538 | b->loc = allocate_bp_location (b); | |
1539 | b->loc->pspace = frame_pspace; | |
1540 | b->loc->address = -1; | |
1541 | b->loc->length = -1; | |
1542 | b->loc->watchpoint_type = -1; | |
1543 | } | |
a5606eee VP |
1544 | } |
1545 | else if (!within_current_scope) | |
7270d8f2 | 1546 | { |
a5606eee | 1547 | printf_filtered (_("\ |
567e1b4e | 1548 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1549 | in which its expression is valid.\n"), |
1550 | b->number); | |
1551 | if (b->related_breakpoint) | |
60e1c644 PA |
1552 | { |
1553 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1554 | b->related_breakpoint->related_breakpoint = NULL; | |
1555 | b->related_breakpoint= NULL; | |
1556 | } | |
a5606eee | 1557 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1558 | } |
a5606eee VP |
1559 | |
1560 | /* Restore the selected frame. */ | |
66076460 DJ |
1561 | if (frame_saved) |
1562 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1563 | } |
1564 | ||
a5606eee | 1565 | |
74960c60 VP |
1566 | /* Returns 1 iff breakpoint location should be |
1567 | inserted in the inferior. */ | |
1568 | static int | |
1569 | should_be_inserted (struct bp_location *bpt) | |
1570 | { | |
1571 | if (!breakpoint_enabled (bpt->owner)) | |
1572 | return 0; | |
1573 | ||
1574 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1575 | return 0; | |
1576 | ||
1577 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1578 | return 0; | |
1579 | ||
56710373 PA |
1580 | /* This is set for example, when we're attached to the parent of a |
1581 | vfork, and have detached from the child. The child is running | |
1582 | free, and we expect it to do an exec or exit, at which point the | |
1583 | OS makes the parent schedulable again (and the target reports | |
1584 | that the vfork is done). Until the child is done with the shared | |
1585 | memory region, do not insert breakpoints in the parent, otherwise | |
1586 | the child could still trip on the parent's breakpoints. Since | |
1587 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1588 | if (bpt->pspace->breakpoints_not_allowed) | |
1589 | return 0; | |
1590 | ||
1042e4c0 SS |
1591 | /* Tracepoints are inserted by the target at a time of its choosing, |
1592 | not by us. */ | |
d77f58be | 1593 | if (is_tracepoint (bpt->owner)) |
1042e4c0 SS |
1594 | return 0; |
1595 | ||
74960c60 VP |
1596 | return 1; |
1597 | } | |
1598 | ||
879bfdc2 DJ |
1599 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1600 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1601 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1602 | |
1603 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1604 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1605 | static int |
879bfdc2 | 1606 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1607 | struct ui_file *tmp_error_stream, |
fa3a767f | 1608 | int *disabled_breaks, |
26bb91f3 | 1609 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1610 | { |
1611 | int val = 0; | |
1612 | ||
74960c60 | 1613 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1614 | return 0; |
1615 | ||
8181d85f DJ |
1616 | /* Initialize the target-specific information. */ |
1617 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1618 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1619 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1620 | |
879bfdc2 DJ |
1621 | if (bpt->loc_type == bp_loc_software_breakpoint |
1622 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1623 | { | |
765dc015 VP |
1624 | if (bpt->owner->type != bp_hardware_breakpoint) |
1625 | { | |
1626 | /* If the explicitly specified breakpoint type | |
1627 | is not hardware breakpoint, check the memory map to see | |
1628 | if the breakpoint address is in read only memory or not. | |
1629 | Two important cases are: | |
1630 | - location type is not hardware breakpoint, memory | |
1631 | is readonly. We change the type of the location to | |
1632 | hardware breakpoint. | |
1633 | - location type is hardware breakpoint, memory is read-write. | |
1634 | This means we've previously made the location hardware one, but | |
1635 | then the memory map changed, so we undo. | |
1636 | ||
1637 | When breakpoints are removed, remove_breakpoints will | |
1638 | use location types we've just set here, the only possible | |
1639 | problem is that memory map has changed during running program, | |
1640 | but it's not going to work anyway with current gdb. */ | |
1641 | struct mem_region *mr | |
1642 | = lookup_mem_region (bpt->target_info.placed_address); | |
1643 | ||
1644 | if (mr) | |
1645 | { | |
1646 | if (automatic_hardware_breakpoints) | |
1647 | { | |
765dc015 VP |
1648 | enum bp_loc_type new_type; |
1649 | ||
1650 | if (mr->attrib.mode != MEM_RW) | |
1651 | new_type = bp_loc_hardware_breakpoint; | |
1652 | else | |
1653 | new_type = bp_loc_software_breakpoint; | |
1654 | ||
1655 | if (new_type != bpt->loc_type) | |
1656 | { | |
1657 | static int said = 0; | |
cc59ec59 | 1658 | |
765dc015 VP |
1659 | bpt->loc_type = new_type; |
1660 | if (!said) | |
1661 | { | |
1662 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1663 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1664 | said = 1; |
1665 | } | |
1666 | } | |
1667 | } | |
1668 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1669 | && mr->attrib.mode != MEM_RW) | |
1670 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1671 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1672 | } |
1673 | } | |
1674 | ||
879bfdc2 DJ |
1675 | /* First check to see if we have to handle an overlay. */ |
1676 | if (overlay_debugging == ovly_off | |
1677 | || bpt->section == NULL | |
1678 | || !(section_is_overlay (bpt->section))) | |
1679 | { | |
1680 | /* No overlay handling: just set the breakpoint. */ | |
1681 | ||
1682 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1683 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1684 | &bpt->target_info); | |
879bfdc2 | 1685 | else |
a6d9a66e UW |
1686 | val = target_insert_breakpoint (bpt->gdbarch, |
1687 | &bpt->target_info); | |
879bfdc2 DJ |
1688 | } |
1689 | else | |
1690 | { | |
1691 | /* This breakpoint is in an overlay section. | |
1692 | Shall we set a breakpoint at the LMA? */ | |
1693 | if (!overlay_events_enabled) | |
1694 | { | |
1695 | /* Yes -- overlay event support is not active, | |
1696 | so we must try to set a breakpoint at the LMA. | |
1697 | This will not work for a hardware breakpoint. */ | |
1698 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1699 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1700 | bpt->owner->number); |
1701 | else | |
1702 | { | |
1703 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1704 | bpt->section); | |
1705 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1706 | bpt->overlay_target_info = bpt->target_info; |
1707 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1708 | val = target_insert_breakpoint (bpt->gdbarch, |
1709 | &bpt->overlay_target_info); | |
879bfdc2 | 1710 | if (val != 0) |
99361f52 DE |
1711 | fprintf_unfiltered (tmp_error_stream, |
1712 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1713 | bpt->owner->number); |
1714 | } | |
1715 | } | |
1716 | /* Shall we set a breakpoint at the VMA? */ | |
1717 | if (section_is_mapped (bpt->section)) | |
1718 | { | |
1719 | /* Yes. This overlay section is mapped into memory. */ | |
1720 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1721 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1722 | &bpt->target_info); | |
879bfdc2 | 1723 | else |
a6d9a66e UW |
1724 | val = target_insert_breakpoint (bpt->gdbarch, |
1725 | &bpt->target_info); | |
879bfdc2 DJ |
1726 | } |
1727 | else | |
1728 | { | |
1729 | /* No. This breakpoint will not be inserted. | |
1730 | No error, but do not mark the bp as 'inserted'. */ | |
1731 | return 0; | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | if (val) | |
1736 | { | |
1737 | /* Can't set the breakpoint. */ | |
6c95b8df | 1738 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1739 | { |
1740 | /* See also: disable_breakpoints_in_shlibs. */ | |
1741 | val = 0; | |
0d381245 | 1742 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1743 | if (!*disabled_breaks) |
1744 | { | |
1745 | fprintf_unfiltered (tmp_error_stream, | |
1746 | "Cannot insert breakpoint %d.\n", | |
1747 | bpt->owner->number); | |
1748 | fprintf_unfiltered (tmp_error_stream, | |
1749 | "Temporarily disabling shared library breakpoints:\n"); | |
1750 | } | |
1751 | *disabled_breaks = 1; | |
1752 | fprintf_unfiltered (tmp_error_stream, | |
1753 | "breakpoint #%d\n", bpt->owner->number); | |
1754 | } | |
1755 | else | |
879bfdc2 | 1756 | { |
879bfdc2 DJ |
1757 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1758 | { | |
1759 | *hw_breakpoint_error = 1; | |
1760 | fprintf_unfiltered (tmp_error_stream, | |
1761 | "Cannot insert hardware breakpoint %d.\n", | |
1762 | bpt->owner->number); | |
1763 | } | |
1764 | else | |
1765 | { | |
1766 | fprintf_unfiltered (tmp_error_stream, | |
1767 | "Cannot insert breakpoint %d.\n", | |
1768 | bpt->owner->number); | |
1769 | fprintf_filtered (tmp_error_stream, | |
1770 | "Error accessing memory address "); | |
5af949e3 UW |
1771 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1772 | tmp_error_stream); | |
879bfdc2 DJ |
1773 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1774 | safe_strerror (val)); | |
1775 | } | |
1776 | ||
1777 | } | |
1778 | } | |
1779 | else | |
1780 | bpt->inserted = 1; | |
1781 | ||
1782 | return val; | |
1783 | } | |
1784 | ||
1785 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1786 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1787 | watchpoints. It's not clear that it's necessary... */ | |
1788 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1789 | { | |
85d721b8 | 1790 | val = target_insert_watchpoint (bpt->address, |
a5606eee VP |
1791 | bpt->length, |
1792 | bpt->watchpoint_type); | |
85d721b8 PA |
1793 | |
1794 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1795 | supported, try emulating one with an access watchpoint. */ | |
1796 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1797 | { | |
1798 | struct bp_location *loc, **loc_temp; | |
1799 | ||
1800 | /* But don't try to insert it, if there's already another | |
1801 | hw_access location that would be considered a duplicate | |
1802 | of this one. */ | |
1803 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1804 | if (loc != bpt | |
1805 | && loc->watchpoint_type == hw_access | |
1806 | && watchpoint_locations_match (bpt, loc)) | |
1807 | { | |
1808 | bpt->duplicate = 1; | |
1809 | bpt->inserted = 1; | |
1810 | bpt->target_info = loc->target_info; | |
1811 | bpt->watchpoint_type = hw_access; | |
1812 | val = 0; | |
1813 | break; | |
1814 | } | |
1815 | ||
1816 | if (val == 1) | |
1817 | { | |
1818 | val = target_insert_watchpoint (bpt->address, | |
1819 | bpt->length, | |
1820 | hw_access); | |
1821 | if (val == 0) | |
1822 | bpt->watchpoint_type = hw_access; | |
1823 | } | |
1824 | } | |
1825 | ||
1826 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1827 | } |
1828 | ||
fe798b75 | 1829 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1830 | { |
71fff37b AC |
1831 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1832 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1833 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1834 | bpt->owner->number); | |
1835 | if (e.reason < 0) | |
879bfdc2 DJ |
1836 | bpt->owner->enable_state = bp_disabled; |
1837 | else | |
1838 | bpt->inserted = 1; | |
1640b821 DJ |
1839 | |
1840 | /* We've already printed an error message if there was a problem | |
1841 | inserting this catchpoint, and we've disabled the catchpoint, | |
1842 | so just return success. */ | |
1843 | return 0; | |
879bfdc2 DJ |
1844 | } |
1845 | ||
1846 | return 0; | |
1847 | } | |
1848 | ||
6c95b8df PA |
1849 | /* This function is called when program space PSPACE is about to be |
1850 | deleted. It takes care of updating breakpoints to not reference | |
1851 | PSPACE anymore. */ | |
1852 | ||
1853 | void | |
1854 | breakpoint_program_space_exit (struct program_space *pspace) | |
1855 | { | |
1856 | struct breakpoint *b, *b_temp; | |
876fa593 | 1857 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1858 | |
1859 | /* Remove any breakpoint that was set through this program space. */ | |
1860 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1861 | { | |
1862 | if (b->pspace == pspace) | |
1863 | delete_breakpoint (b); | |
1864 | } | |
1865 | ||
1866 | /* Breakpoints set through other program spaces could have locations | |
1867 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1868 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1869 | { |
1870 | struct bp_location *tmp; | |
1871 | ||
1872 | if (loc->pspace == pspace) | |
1873 | { | |
1874 | if (loc->owner->loc == loc) | |
1875 | loc->owner->loc = loc->next; | |
1876 | else | |
1877 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1878 | if (tmp->next == loc) | |
1879 | { | |
1880 | tmp->next = loc->next; | |
1881 | break; | |
1882 | } | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | /* Now update the global location list to permanently delete the | |
1887 | removed locations above. */ | |
1888 | update_global_location_list (0); | |
1889 | } | |
1890 | ||
74960c60 VP |
1891 | /* Make sure all breakpoints are inserted in inferior. |
1892 | Throws exception on any error. | |
1893 | A breakpoint that is already inserted won't be inserted | |
1894 | again, so calling this function twice is safe. */ | |
1895 | void | |
1896 | insert_breakpoints (void) | |
1897 | { | |
1898 | struct breakpoint *bpt; | |
1899 | ||
1900 | ALL_BREAKPOINTS (bpt) | |
1901 | if (is_hardware_watchpoint (bpt)) | |
1902 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1903 | ||
b60e7edf | 1904 | update_global_location_list (1); |
74960c60 | 1905 | |
c35b1492 PA |
1906 | /* update_global_location_list does not insert breakpoints when |
1907 | always_inserted_mode is not enabled. Explicitly insert them | |
1908 | now. */ | |
1909 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1910 | insert_breakpoint_locations (); |
1911 | } | |
1912 | ||
c906108c SS |
1913 | /* insert_breakpoints is used when starting or continuing the program. |
1914 | remove_breakpoints is used when the program stops. | |
1915 | Both return zero if successful, | |
1916 | or an `errno' value if could not write the inferior. */ | |
1917 | ||
74960c60 VP |
1918 | static void |
1919 | insert_breakpoint_locations (void) | |
c906108c | 1920 | { |
a5606eee | 1921 | struct breakpoint *bpt; |
876fa593 | 1922 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1923 | int error = 0; |
c906108c SS |
1924 | int val = 0; |
1925 | int disabled_breaks = 0; | |
81d0cc19 | 1926 | int hw_breakpoint_error = 0; |
c906108c | 1927 | |
81d0cc19 | 1928 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1929 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1930 | |
81d0cc19 GS |
1931 | /* Explicitly mark the warning -- this will only be printed if |
1932 | there was an error. */ | |
1933 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1934 | |
1935 | save_current_space_and_thread (); | |
1936 | ||
876fa593 | 1937 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1938 | { |
74960c60 | 1939 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1940 | continue; |
1941 | ||
f365de73 AS |
1942 | /* There is no point inserting thread-specific breakpoints if the |
1943 | thread no longer exists. */ | |
1944 | if (b->owner->thread != -1 | |
1945 | && !valid_thread_id (b->owner->thread)) | |
1946 | continue; | |
1947 | ||
6c95b8df PA |
1948 | switch_to_program_space_and_thread (b->pspace); |
1949 | ||
1950 | /* For targets that support global breakpoints, there's no need | |
1951 | to select an inferior to insert breakpoint to. In fact, even | |
1952 | if we aren't attached to any process yet, we should still | |
1953 | insert breakpoints. */ | |
1954 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1955 | && ptid_equal (inferior_ptid, null_ptid)) | |
1956 | continue; | |
1957 | ||
879bfdc2 | 1958 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1959 | &disabled_breaks, |
879bfdc2 DJ |
1960 | &hw_breakpoint_error); |
1961 | if (val) | |
e236ba44 | 1962 | error = val; |
879bfdc2 | 1963 | } |
c906108c | 1964 | |
a5606eee VP |
1965 | /* If we failed to insert all locations of a watchpoint, |
1966 | remove them, as half-inserted watchpoint is of limited use. */ | |
1967 | ALL_BREAKPOINTS (bpt) | |
1968 | { | |
1969 | int some_failed = 0; | |
1970 | struct bp_location *loc; | |
1971 | ||
1972 | if (!is_hardware_watchpoint (bpt)) | |
1973 | continue; | |
1974 | ||
d6b74ac4 | 1975 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1976 | continue; |
74960c60 VP |
1977 | |
1978 | if (bpt->disposition == disp_del_at_next_stop) | |
1979 | continue; | |
a5606eee VP |
1980 | |
1981 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1982 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1983 | { |
1984 | some_failed = 1; | |
1985 | break; | |
1986 | } | |
1987 | if (some_failed) | |
1988 | { | |
1989 | for (loc = bpt->loc; loc; loc = loc->next) | |
1990 | if (loc->inserted) | |
1991 | remove_breakpoint (loc, mark_uninserted); | |
1992 | ||
1993 | hw_breakpoint_error = 1; | |
1994 | fprintf_unfiltered (tmp_error_stream, | |
1995 | "Could not insert hardware watchpoint %d.\n", | |
1996 | bpt->number); | |
1997 | error = -1; | |
1998 | } | |
1999 | } | |
2000 | ||
e236ba44 | 2001 | if (error) |
81d0cc19 GS |
2002 | { |
2003 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2004 | message about possibly exhausted resources. */ | |
879bfdc2 | 2005 | if (hw_breakpoint_error) |
81d0cc19 | 2006 | { |
c6510018 MS |
2007 | fprintf_unfiltered (tmp_error_stream, |
2008 | "Could not insert hardware breakpoints:\n\ | |
2009 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2010 | } |
81d0cc19 GS |
2011 | target_terminal_ours_for_output (); |
2012 | error_stream (tmp_error_stream); | |
2013 | } | |
f7545552 TT |
2014 | |
2015 | do_cleanups (cleanups); | |
c906108c SS |
2016 | } |
2017 | ||
c906108c | 2018 | int |
fba45db2 | 2019 | remove_breakpoints (void) |
c906108c | 2020 | { |
876fa593 | 2021 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2022 | int val = 0; |
c906108c | 2023 | |
876fa593 | 2024 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2025 | { |
0bde7532 | 2026 | if (b->inserted) |
3a1bae8e | 2027 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 2028 | } |
3a1bae8e | 2029 | return val; |
c906108c SS |
2030 | } |
2031 | ||
6c95b8df PA |
2032 | /* Remove breakpoints of process PID. */ |
2033 | ||
2034 | int | |
2035 | remove_breakpoints_pid (int pid) | |
2036 | { | |
876fa593 | 2037 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
2038 | int val; |
2039 | struct inferior *inf = find_inferior_pid (pid); | |
2040 | ||
876fa593 | 2041 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
2042 | { |
2043 | if (b->pspace != inf->pspace) | |
2044 | continue; | |
2045 | ||
2046 | if (b->inserted) | |
2047 | { | |
2048 | val = remove_breakpoint (b, mark_uninserted); | |
2049 | if (val != 0) | |
2050 | return val; | |
2051 | } | |
2052 | } | |
2053 | return 0; | |
2054 | } | |
2055 | ||
692590c1 | 2056 | int |
80ce1ecb | 2057 | remove_hw_watchpoints (void) |
692590c1 | 2058 | { |
876fa593 | 2059 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2060 | int val = 0; |
692590c1 | 2061 | |
876fa593 | 2062 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 2063 | { |
0bde7532 | 2064 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 2065 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 2066 | } |
3a1bae8e | 2067 | return val; |
692590c1 MS |
2068 | } |
2069 | ||
c906108c | 2070 | int |
fba45db2 | 2071 | reattach_breakpoints (int pid) |
c906108c | 2072 | { |
6c95b8df | 2073 | struct cleanup *old_chain; |
876fa593 | 2074 | struct bp_location *b, **bp_tmp; |
c906108c | 2075 | int val; |
a4954f26 | 2076 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2077 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2078 | struct inferior *inf; |
2079 | struct thread_info *tp; | |
2080 | ||
2081 | tp = any_live_thread_of_process (pid); | |
2082 | if (tp == NULL) | |
2083 | return 1; | |
2084 | ||
2085 | inf = find_inferior_pid (pid); | |
2086 | old_chain = save_inferior_ptid (); | |
2087 | ||
2088 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2089 | |
2090 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2091 | |
876fa593 | 2092 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2093 | { |
6c95b8df PA |
2094 | if (b->pspace != inf->pspace) |
2095 | continue; | |
2096 | ||
0bde7532 | 2097 | if (b->inserted) |
c5aa993b | 2098 | { |
a4954f26 DJ |
2099 | b->inserted = 0; |
2100 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 2101 | &dummy1, &dummy2); |
c5aa993b JM |
2102 | if (val != 0) |
2103 | { | |
ce696e05 | 2104 | do_cleanups (old_chain); |
c5aa993b JM |
2105 | return val; |
2106 | } | |
2107 | } | |
2108 | } | |
ce696e05 | 2109 | do_cleanups (old_chain); |
c906108c SS |
2110 | return 0; |
2111 | } | |
2112 | ||
e58b0e63 PA |
2113 | static int internal_breakpoint_number = -1; |
2114 | ||
e62c965a | 2115 | static struct breakpoint * |
a6d9a66e UW |
2116 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2117 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2118 | { |
e62c965a PP |
2119 | struct symtab_and_line sal; |
2120 | struct breakpoint *b; | |
2121 | ||
2122 | init_sal (&sal); /* initialize to zeroes */ | |
2123 | ||
2124 | sal.pc = address; | |
2125 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2126 | sal.pspace = current_program_space; |
e62c965a | 2127 | |
a6d9a66e | 2128 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2129 | b->number = internal_breakpoint_number--; |
2130 | b->disposition = disp_donttouch; | |
2131 | ||
2132 | return b; | |
2133 | } | |
2134 | ||
2135 | static void | |
69de3c6a | 2136 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2137 | { |
69de3c6a | 2138 | struct objfile *objfile; |
e62c965a | 2139 | |
69de3c6a PP |
2140 | ALL_OBJFILES (objfile) |
2141 | { | |
2142 | struct breakpoint *b; | |
2143 | struct minimal_symbol *m; | |
2144 | ||
2145 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2146 | if (m == NULL) | |
2147 | continue; | |
e62c965a | 2148 | |
a6d9a66e UW |
2149 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2150 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2151 | bp_overlay_event); |
2152 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2153 | |
69de3c6a PP |
2154 | if (overlay_debugging == ovly_auto) |
2155 | { | |
2156 | b->enable_state = bp_enabled; | |
2157 | overlay_events_enabled = 1; | |
2158 | } | |
2159 | else | |
2160 | { | |
2161 | b->enable_state = bp_disabled; | |
2162 | overlay_events_enabled = 0; | |
2163 | } | |
e62c965a PP |
2164 | } |
2165 | update_global_location_list (1); | |
2166 | } | |
2167 | ||
0fd8e87f UW |
2168 | static void |
2169 | create_longjmp_master_breakpoint (char *func_name) | |
2170 | { | |
6c95b8df | 2171 | struct program_space *pspace; |
0fd8e87f | 2172 | struct objfile *objfile; |
6c95b8df PA |
2173 | struct cleanup *old_chain; |
2174 | ||
2175 | old_chain = save_current_program_space (); | |
0fd8e87f | 2176 | |
6c95b8df | 2177 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2178 | ALL_OBJFILES (objfile) |
2179 | { | |
2180 | struct breakpoint *b; | |
2181 | struct minimal_symbol *m; | |
2182 | ||
2183 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2184 | continue; | |
2185 | ||
6c95b8df PA |
2186 | set_current_program_space (pspace); |
2187 | ||
0fd8e87f UW |
2188 | m = lookup_minimal_symbol_text (func_name, objfile); |
2189 | if (m == NULL) | |
2190 | continue; | |
2191 | ||
a6d9a66e UW |
2192 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2193 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2194 | bp_longjmp_master); |
2195 | b->addr_string = xstrdup (func_name); | |
2196 | b->enable_state = bp_disabled; | |
2197 | } | |
2198 | update_global_location_list (1); | |
6c95b8df PA |
2199 | |
2200 | do_cleanups (old_chain); | |
0fd8e87f UW |
2201 | } |
2202 | ||
aa7d318d TT |
2203 | /* Create a master std::terminate breakpoint. The actual function |
2204 | looked for is named FUNC_NAME. */ | |
2205 | static void | |
2206 | create_std_terminate_master_breakpoint (const char *func_name) | |
2207 | { | |
2208 | struct program_space *pspace; | |
2209 | struct objfile *objfile; | |
2210 | struct cleanup *old_chain; | |
2211 | ||
2212 | old_chain = save_current_program_space (); | |
2213 | ||
2214 | ALL_PSPACES (pspace) | |
2215 | ALL_OBJFILES (objfile) | |
2216 | { | |
2217 | struct breakpoint *b; | |
2218 | struct minimal_symbol *m; | |
2219 | ||
2220 | set_current_program_space (pspace); | |
2221 | ||
2222 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2223 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2224 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2225 | continue; | |
2226 | ||
2227 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2228 | SYMBOL_VALUE_ADDRESS (m), | |
2229 | bp_std_terminate_master); | |
2230 | b->addr_string = xstrdup (func_name); | |
2231 | b->enable_state = bp_disabled; | |
2232 | } | |
2233 | update_global_location_list (1); | |
2234 | ||
2235 | do_cleanups (old_chain); | |
2236 | } | |
2237 | ||
c906108c | 2238 | void |
fba45db2 | 2239 | update_breakpoints_after_exec (void) |
c906108c | 2240 | { |
c5aa993b JM |
2241 | struct breakpoint *b; |
2242 | struct breakpoint *temp; | |
876fa593 | 2243 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2244 | |
25b22b0a PA |
2245 | /* We're about to delete breakpoints from GDB's lists. If the |
2246 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2247 | writing the breakpoints' "shadow contents" back into memory. The | |
2248 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2249 | do that. Instead, the target is responsible from marking | |
2250 | breakpoints out as soon as it detects an exec. We don't do that | |
2251 | here instead, because there may be other attempts to delete | |
2252 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2253 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2254 | if (bploc->pspace == current_program_space) |
2255 | gdb_assert (!bploc->inserted); | |
c906108c SS |
2256 | |
2257 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2258 | { |
6c95b8df PA |
2259 | if (b->pspace != current_program_space) |
2260 | continue; | |
2261 | ||
c5aa993b JM |
2262 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
2263 | if (b->type == bp_shlib_event) | |
2264 | { | |
2265 | delete_breakpoint (b); | |
2266 | continue; | |
2267 | } | |
c906108c | 2268 | |
4efc6507 DE |
2269 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
2270 | if (b->type == bp_jit_event) | |
2271 | { | |
2272 | delete_breakpoint (b); | |
2273 | continue; | |
2274 | } | |
2275 | ||
1900040c | 2276 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2277 | as must overlay event and longjmp master breakpoints. */ |
2278 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
aa7d318d | 2279 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master) |
c4093a6a JM |
2280 | { |
2281 | delete_breakpoint (b); | |
2282 | continue; | |
2283 | } | |
2284 | ||
c5aa993b JM |
2285 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2286 | if (b->type == bp_step_resume) | |
2287 | { | |
2288 | delete_breakpoint (b); | |
2289 | continue; | |
2290 | } | |
2291 | ||
611c83ae PA |
2292 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2293 | after an exec. */ | |
2294 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
2295 | { | |
2296 | delete_breakpoint (b); | |
2297 | continue; | |
2298 | } | |
2299 | ||
ce78b96d JB |
2300 | if (b->type == bp_catchpoint) |
2301 | { | |
2302 | /* For now, none of the bp_catchpoint breakpoints need to | |
2303 | do anything at this point. In the future, if some of | |
2304 | the catchpoints need to something, we will need to add | |
2305 | a new method, and call this method from here. */ | |
2306 | continue; | |
2307 | } | |
2308 | ||
c5aa993b JM |
2309 | /* bp_finish is a special case. The only way we ought to be able |
2310 | to see one of these when an exec() has happened, is if the user | |
2311 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2312 | carries them to the call-site of the current callee, by setting | |
2313 | a temporary bp there and resuming. But in this case, the finish | |
2314 | will carry them entirely through the vfork & exec. | |
2315 | ||
2316 | We don't want to allow a bp_finish to remain inserted now. But | |
2317 | we can't safely delete it, 'cause finish_command has a handle to | |
2318 | the bp on a bpstat, and will later want to delete it. There's a | |
2319 | chance (and I've seen it happen) that if we delete the bp_finish | |
2320 | here, that its storage will get reused by the time finish_command | |
2321 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2322 | We really must allow finish_command to delete a bp_finish. | |
2323 | ||
53a5351d JM |
2324 | In the absense of a general solution for the "how do we know |
2325 | it's safe to delete something others may have handles to?" | |
2326 | problem, what we'll do here is just uninsert the bp_finish, and | |
2327 | let finish_command delete it. | |
2328 | ||
2329 | (We know the bp_finish is "doomed" in the sense that it's | |
2330 | momentary, and will be deleted as soon as finish_command sees | |
2331 | the inferior stopped. So it doesn't matter that the bp's | |
2332 | address is probably bogus in the new a.out, unlike e.g., the | |
2333 | solib breakpoints.) */ | |
c5aa993b | 2334 | |
c5aa993b JM |
2335 | if (b->type == bp_finish) |
2336 | { | |
2337 | continue; | |
2338 | } | |
2339 | ||
2340 | /* Without a symbolic address, we have little hope of the | |
2341 | pre-exec() address meaning the same thing in the post-exec() | |
2342 | a.out. */ | |
2343 | if (b->addr_string == NULL) | |
2344 | { | |
2345 | delete_breakpoint (b); | |
2346 | continue; | |
2347 | } | |
c5aa993b | 2348 | } |
1900040c | 2349 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2350 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2351 | create_longjmp_master_breakpoint ("longjmp"); |
2352 | create_longjmp_master_breakpoint ("_longjmp"); | |
2353 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2354 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2355 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
2356 | } |
2357 | ||
2358 | int | |
fba45db2 | 2359 | detach_breakpoints (int pid) |
c906108c | 2360 | { |
876fa593 | 2361 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2362 | int val = 0; |
ce696e05 | 2363 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2364 | struct inferior *inf = current_inferior (); |
c5aa993b | 2365 | |
39f77062 | 2366 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2367 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2368 | |
6c95b8df | 2369 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2370 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2371 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2372 | { |
6c95b8df PA |
2373 | if (b->pspace != inf->pspace) |
2374 | continue; | |
2375 | ||
0bde7532 | 2376 | if (b->inserted) |
6c95b8df | 2377 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2378 | } |
ce696e05 | 2379 | do_cleanups (old_chain); |
3a1bae8e | 2380 | return val; |
c906108c SS |
2381 | } |
2382 | ||
6c95b8df PA |
2383 | /* Remove the breakpoint location B from the current address space. |
2384 | Note that this is used to detach breakpoints from a child fork. | |
2385 | When we get here, the child isn't in the inferior list, and neither | |
2386 | do we have objects to represent its address space --- we should | |
2387 | *not* look at b->pspace->aspace here. */ | |
2388 | ||
c906108c | 2389 | static int |
6c95b8df | 2390 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2391 | { |
2392 | int val; | |
c5aa993b | 2393 | |
0bde7532 | 2394 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2395 | /* Permanent breakpoints cannot be inserted or removed. */ |
2396 | return 0; | |
2397 | ||
74960c60 VP |
2398 | /* The type of none suggests that owner is actually deleted. |
2399 | This should not ever happen. */ | |
2400 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2401 | |
2402 | if (b->loc_type == bp_loc_software_breakpoint | |
2403 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2404 | { |
c02f5703 MS |
2405 | /* "Normal" instruction breakpoint: either the standard |
2406 | trap-instruction bp (bp_breakpoint), or a | |
2407 | bp_hardware_breakpoint. */ | |
2408 | ||
2409 | /* First check to see if we have to handle an overlay. */ | |
2410 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2411 | || b->section == NULL |
2412 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2413 | { |
2414 | /* No overlay handling: just remove the breakpoint. */ | |
2415 | ||
0bde7532 | 2416 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2417 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2418 | else |
a6d9a66e | 2419 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2420 | } |
c906108c SS |
2421 | else |
2422 | { | |
c02f5703 MS |
2423 | /* This breakpoint is in an overlay section. |
2424 | Did we set a breakpoint at the LMA? */ | |
2425 | if (!overlay_events_enabled) | |
2426 | { | |
2427 | /* Yes -- overlay event support is not active, so we | |
2428 | should have set a breakpoint at the LMA. Remove it. | |
2429 | */ | |
c02f5703 MS |
2430 | /* Ignore any failures: if the LMA is in ROM, we will |
2431 | have already warned when we failed to insert it. */ | |
0bde7532 | 2432 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2433 | target_remove_hw_breakpoint (b->gdbarch, |
2434 | &b->overlay_target_info); | |
c02f5703 | 2435 | else |
a6d9a66e UW |
2436 | target_remove_breakpoint (b->gdbarch, |
2437 | &b->overlay_target_info); | |
c02f5703 MS |
2438 | } |
2439 | /* Did we set a breakpoint at the VMA? | |
2440 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2441 | if (b->inserted) |
c906108c | 2442 | { |
c02f5703 MS |
2443 | /* Yes -- remove it. Previously we did not bother to |
2444 | remove the breakpoint if the section had been | |
2445 | unmapped, but let's not rely on that being safe. We | |
2446 | don't know what the overlay manager might do. */ | |
0bde7532 | 2447 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2448 | val = target_remove_hw_breakpoint (b->gdbarch, |
2449 | &b->target_info); | |
aa67235e UW |
2450 | |
2451 | /* However, we should remove *software* breakpoints only | |
2452 | if the section is still mapped, or else we overwrite | |
2453 | wrong code with the saved shadow contents. */ | |
2454 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2455 | val = target_remove_breakpoint (b->gdbarch, |
2456 | &b->target_info); | |
aa67235e UW |
2457 | else |
2458 | val = 0; | |
c906108c | 2459 | } |
c02f5703 MS |
2460 | else |
2461 | { | |
2462 | /* No -- not inserted, so no need to remove. No error. */ | |
2463 | val = 0; | |
2464 | } | |
c906108c | 2465 | } |
879d1e6b UW |
2466 | |
2467 | /* In some cases, we might not be able to remove a breakpoint | |
2468 | in a shared library that has already been removed, but we | |
2469 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2470 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2471 | val = 0; |
2472 | ||
c906108c SS |
2473 | if (val) |
2474 | return val; | |
0bde7532 | 2475 | b->inserted = (is == mark_inserted); |
c906108c | 2476 | } |
a5606eee | 2477 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2478 | { |
0bde7532 | 2479 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2480 | val = target_remove_watchpoint (b->address, b->length, |
2481 | b->watchpoint_type); | |
2e70b7b9 | 2482 | |
c906108c | 2483 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2484 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2485 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2486 | b->owner->number); |
c906108c | 2487 | } |
ce78b96d JB |
2488 | else if (b->owner->type == bp_catchpoint |
2489 | && breakpoint_enabled (b->owner) | |
2490 | && !b->duplicate) | |
2491 | { | |
2492 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2493 | ||
2494 | val = b->owner->ops->remove (b->owner); | |
2495 | if (val) | |
2496 | return val; | |
2497 | b->inserted = (is == mark_inserted); | |
2498 | } | |
c906108c SS |
2499 | |
2500 | return 0; | |
2501 | } | |
2502 | ||
6c95b8df PA |
2503 | static int |
2504 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2505 | { | |
2506 | int ret; | |
2507 | struct cleanup *old_chain; | |
2508 | ||
2509 | if (b->owner->enable_state == bp_permanent) | |
2510 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2511 | return 0; | |
2512 | ||
2513 | /* The type of none suggests that owner is actually deleted. | |
2514 | This should not ever happen. */ | |
2515 | gdb_assert (b->owner->type != bp_none); | |
2516 | ||
2517 | old_chain = save_current_space_and_thread (); | |
2518 | ||
2519 | switch_to_program_space_and_thread (b->pspace); | |
2520 | ||
2521 | ret = remove_breakpoint_1 (b, is); | |
2522 | ||
2523 | do_cleanups (old_chain); | |
2524 | return ret; | |
2525 | } | |
2526 | ||
c906108c SS |
2527 | /* Clear the "inserted" flag in all breakpoints. */ |
2528 | ||
25b22b0a | 2529 | void |
fba45db2 | 2530 | mark_breakpoints_out (void) |
c906108c | 2531 | { |
876fa593 | 2532 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2533 | |
876fa593 | 2534 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2535 | if (bpt->pspace == current_program_space) |
2536 | bpt->inserted = 0; | |
c906108c SS |
2537 | } |
2538 | ||
53a5351d JM |
2539 | /* Clear the "inserted" flag in all breakpoints and delete any |
2540 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2541 | |
2542 | Plus other such housekeeping that has to be done for breakpoints | |
2543 | between runs. | |
2544 | ||
53a5351d JM |
2545 | Note: this function gets called at the end of a run (by |
2546 | generic_mourn_inferior) and when a run begins (by | |
2547 | init_wait_for_inferior). */ | |
c906108c SS |
2548 | |
2549 | ||
2550 | ||
2551 | void | |
fba45db2 | 2552 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2553 | { |
52f0bd74 | 2554 | struct breakpoint *b, *temp; |
876fa593 | 2555 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2556 | int ix; |
6c95b8df | 2557 | struct program_space *pspace = current_program_space; |
c906108c | 2558 | |
50c71eaf PA |
2559 | /* If breakpoint locations are shared across processes, then there's |
2560 | nothing to do. */ | |
2567c7d9 | 2561 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2562 | return; |
2563 | ||
876fa593 | 2564 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2565 | { |
2566 | if (bpt->pspace == pspace | |
2567 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2568 | bpt->inserted = 0; |
6c95b8df | 2569 | } |
075f6582 | 2570 | |
c906108c | 2571 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2572 | { |
6c95b8df PA |
2573 | if (b->loc && b->loc->pspace != pspace) |
2574 | continue; | |
2575 | ||
c5aa993b JM |
2576 | switch (b->type) |
2577 | { | |
2578 | case bp_call_dummy: | |
c906108c | 2579 | |
c5aa993b | 2580 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2581 | cause problems when the inferior is rerun, so we better get |
2582 | rid of it. */ | |
2583 | ||
2584 | case bp_watchpoint_scope: | |
2585 | ||
2586 | /* Also get rid of scope breakpoints. */ | |
2587 | ||
2588 | case bp_shlib_event: | |
2589 | ||
2590 | /* Also remove solib event breakpoints. Their addresses may | |
2591 | have changed since the last time we ran the program. | |
2592 | Actually we may now be debugging against different target; | |
2593 | and so the solib backend that installed this breakpoint may | |
2594 | not be used in by the target. E.g., | |
2595 | ||
2596 | (gdb) file prog-linux | |
2597 | (gdb) run # native linux target | |
2598 | ... | |
2599 | (gdb) kill | |
2600 | (gdb) file prog-win.exe | |
2601 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2602 | */ | |
c906108c | 2603 | |
c5aa993b JM |
2604 | delete_breakpoint (b); |
2605 | break; | |
c906108c | 2606 | |
c5aa993b JM |
2607 | case bp_watchpoint: |
2608 | case bp_hardware_watchpoint: | |
2609 | case bp_read_watchpoint: | |
2610 | case bp_access_watchpoint: | |
c906108c | 2611 | |
c5aa993b JM |
2612 | /* Likewise for watchpoints on local expressions. */ |
2613 | if (b->exp_valid_block != NULL) | |
2614 | delete_breakpoint (b); | |
967af18d | 2615 | else if (context == inf_starting) |
c860120c PM |
2616 | { |
2617 | /* Reset val field to force reread of starting value | |
2618 | in insert_breakpoints. */ | |
2619 | if (b->val) | |
2620 | value_free (b->val); | |
2621 | b->val = NULL; | |
fa4727a6 | 2622 | b->val_valid = 0; |
c860120c | 2623 | } |
c5aa993b JM |
2624 | break; |
2625 | default: | |
c5aa993b JM |
2626 | break; |
2627 | } | |
2628 | } | |
1c5cfe86 PA |
2629 | |
2630 | /* Get rid of the moribund locations. */ | |
2631 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2632 | free_bp_location (bpt); | |
2633 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2634 | } |
2635 | ||
6c95b8df PA |
2636 | /* These functions concern about actual breakpoints inserted in the |
2637 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2638 | we need to hop over the bkpt --- so we check for address space | |
2639 | match, not program space. */ | |
2640 | ||
c2c6d25f JM |
2641 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2642 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2643 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2644 | permanent breakpoint. | |
2645 | - When continuing from a location with an ordinary breakpoint, we | |
2646 | actually single step once before calling insert_breakpoints. | |
2647 | - When continuing from a localion with a permanent breakpoint, we | |
2648 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2649 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2650 | |
c2c6d25f | 2651 | enum breakpoint_here |
6c95b8df | 2652 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2653 | { |
876fa593 | 2654 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2655 | int any_breakpoint_here = 0; |
c906108c | 2656 | |
876fa593 | 2657 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2658 | { |
2659 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2660 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2661 | continue; | |
2662 | ||
468d015d | 2663 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2664 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2665 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2666 | aspace, pc)) | |
075f6582 DJ |
2667 | { |
2668 | if (overlay_debugging | |
2669 | && section_is_overlay (bpt->section) | |
2670 | && !section_is_mapped (bpt->section)) | |
2671 | continue; /* unmapped overlay -- can't be a match */ | |
2672 | else if (bpt->owner->enable_state == bp_permanent) | |
2673 | return permanent_breakpoint_here; | |
2674 | else | |
2675 | any_breakpoint_here = 1; | |
2676 | } | |
2677 | } | |
c906108c | 2678 | |
c2c6d25f | 2679 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2680 | } |
2681 | ||
1c5cfe86 PA |
2682 | /* Return true if there's a moribund breakpoint at PC. */ |
2683 | ||
2684 | int | |
6c95b8df | 2685 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2686 | { |
2687 | struct bp_location *loc; | |
2688 | int ix; | |
2689 | ||
2690 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2691 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2692 | aspace, pc)) | |
1c5cfe86 PA |
2693 | return 1; |
2694 | ||
2695 | return 0; | |
2696 | } | |
c2c6d25f | 2697 | |
c36b740a | 2698 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2699 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2700 | This does not check for single-step breakpoints, which are |
2701 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2702 | |
2703 | int | |
6c95b8df | 2704 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2705 | { |
876fa593 | 2706 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2707 | |
876fa593 | 2708 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2709 | { |
075f6582 DJ |
2710 | if (bpt->loc_type != bp_loc_software_breakpoint |
2711 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2712 | continue; | |
2713 | ||
2714 | if (bpt->inserted | |
6c95b8df PA |
2715 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2716 | aspace, pc)) | |
075f6582 DJ |
2717 | { |
2718 | if (overlay_debugging | |
2719 | && section_is_overlay (bpt->section) | |
2720 | && !section_is_mapped (bpt->section)) | |
2721 | continue; /* unmapped overlay -- can't be a match */ | |
2722 | else | |
2723 | return 1; | |
2724 | } | |
c5aa993b | 2725 | } |
c36b740a VP |
2726 | return 0; |
2727 | } | |
2728 | ||
2729 | /* Returns non-zero iff there's either regular breakpoint | |
2730 | or a single step breakpoint inserted at PC. */ | |
2731 | ||
2732 | int | |
6c95b8df | 2733 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2734 | { |
6c95b8df | 2735 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2736 | return 1; |
c906108c | 2737 | |
6c95b8df | 2738 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2739 | return 1; |
2740 | ||
c906108c SS |
2741 | return 0; |
2742 | } | |
2743 | ||
4fa8626c DJ |
2744 | /* This function returns non-zero iff there is a software breakpoint |
2745 | inserted at PC. */ | |
2746 | ||
2747 | int | |
6c95b8df | 2748 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2749 | { |
876fa593 | 2750 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c | 2751 | |
876fa593 | 2752 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2753 | { |
2754 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2755 | continue; | |
2756 | ||
0d381245 | 2757 | if (bpt->inserted |
6c95b8df PA |
2758 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2759 | aspace, pc)) | |
4fa8626c DJ |
2760 | { |
2761 | if (overlay_debugging | |
2762 | && section_is_overlay (bpt->section) | |
2763 | && !section_is_mapped (bpt->section)) | |
2764 | continue; /* unmapped overlay -- can't be a match */ | |
2765 | else | |
2766 | return 1; | |
2767 | } | |
2768 | } | |
2769 | ||
1aafd4da | 2770 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2771 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2772 | return 1; |
2773 | ||
4fa8626c DJ |
2774 | return 0; |
2775 | } | |
2776 | ||
9093389c PA |
2777 | int |
2778 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2779 | CORE_ADDR addr, ULONGEST len) | |
2780 | { | |
2781 | struct breakpoint *bpt; | |
2782 | ||
2783 | ALL_BREAKPOINTS (bpt) | |
2784 | { | |
2785 | struct bp_location *loc; | |
2786 | ||
2787 | if (bpt->type != bp_hardware_watchpoint | |
2788 | && bpt->type != bp_access_watchpoint) | |
2789 | continue; | |
2790 | ||
2791 | if (!breakpoint_enabled (bpt)) | |
2792 | continue; | |
2793 | ||
2794 | for (loc = bpt->loc; loc; loc = loc->next) | |
2795 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2796 | { | |
2797 | CORE_ADDR l, h; | |
2798 | ||
2799 | /* Check for intersection. */ | |
2800 | l = max (loc->address, addr); | |
2801 | h = min (loc->address + loc->length, addr + len); | |
2802 | if (l < h) | |
2803 | return 1; | |
2804 | } | |
2805 | } | |
2806 | return 0; | |
2807 | } | |
2808 | ||
075f6582 DJ |
2809 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2810 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2811 | |
2812 | int | |
6c95b8df PA |
2813 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2814 | ptid_t ptid) | |
c906108c | 2815 | { |
876fa593 | 2816 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2817 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2818 | int thread = -1; |
4a306c9a | 2819 | int task = 0; |
a6f1cd96 | 2820 | |
876fa593 | 2821 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2822 | { |
075f6582 DJ |
2823 | if (bpt->loc_type != bp_loc_software_breakpoint |
2824 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2825 | continue; | |
2826 | ||
a6f1cd96 JB |
2827 | if (!breakpoint_enabled (bpt->owner) |
2828 | && bpt->owner->enable_state != bp_permanent) | |
2829 | continue; | |
2830 | ||
6c95b8df PA |
2831 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2832 | aspace, pc)) | |
a6f1cd96 JB |
2833 | continue; |
2834 | ||
2835 | if (bpt->owner->thread != -1) | |
075f6582 | 2836 | { |
a6f1cd96 JB |
2837 | /* This is a thread-specific breakpoint. Check that ptid |
2838 | matches that thread. If thread hasn't been computed yet, | |
2839 | it is now time to do so. */ | |
2840 | if (thread == -1) | |
2841 | thread = pid_to_thread_id (ptid); | |
2842 | if (bpt->owner->thread != thread) | |
2843 | continue; | |
075f6582 | 2844 | } |
a6f1cd96 | 2845 | |
4a306c9a JB |
2846 | if (bpt->owner->task != 0) |
2847 | { | |
2848 | /* This is a task-specific breakpoint. Check that ptid | |
2849 | matches that task. If task hasn't been computed yet, | |
2850 | it is now time to do so. */ | |
2851 | if (task == 0) | |
2852 | task = ada_get_task_number (ptid); | |
2853 | if (bpt->owner->task != task) | |
2854 | continue; | |
2855 | } | |
2856 | ||
a6f1cd96 JB |
2857 | if (overlay_debugging |
2858 | && section_is_overlay (bpt->section) | |
2859 | && !section_is_mapped (bpt->section)) | |
2860 | continue; /* unmapped overlay -- can't be a match */ | |
2861 | ||
2862 | return 1; | |
c5aa993b | 2863 | } |
c906108c SS |
2864 | |
2865 | return 0; | |
2866 | } | |
c906108c | 2867 | \f |
c5aa993b | 2868 | |
c906108c SS |
2869 | /* bpstat stuff. External routines' interfaces are documented |
2870 | in breakpoint.h. */ | |
2871 | ||
2872 | int | |
fba45db2 | 2873 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2874 | { |
533be4dd | 2875 | return (ep->type == bp_catchpoint); |
c906108c SS |
2876 | } |
2877 | ||
198757a8 VP |
2878 | void |
2879 | bpstat_free (bpstat bs) | |
2880 | { | |
2881 | if (bs->old_val != NULL) | |
2882 | value_free (bs->old_val); | |
9add0f1b | 2883 | decref_counted_command_line (&bs->commands); |
198757a8 VP |
2884 | xfree (bs); |
2885 | } | |
2886 | ||
c906108c SS |
2887 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2888 | Also free any storage that is part of a bpstat. */ | |
2889 | ||
2890 | void | |
fba45db2 | 2891 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2892 | { |
2893 | bpstat p; | |
2894 | bpstat q; | |
2895 | ||
2896 | if (bsp == 0) | |
2897 | return; | |
2898 | p = *bsp; | |
2899 | while (p != NULL) | |
2900 | { | |
2901 | q = p->next; | |
198757a8 | 2902 | bpstat_free (p); |
c906108c SS |
2903 | p = q; |
2904 | } | |
2905 | *bsp = NULL; | |
2906 | } | |
2907 | ||
2908 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2909 | is part of the bpstat is copied as well. */ | |
2910 | ||
2911 | bpstat | |
fba45db2 | 2912 | bpstat_copy (bpstat bs) |
c906108c SS |
2913 | { |
2914 | bpstat p = NULL; | |
2915 | bpstat tmp; | |
2916 | bpstat retval = NULL; | |
2917 | ||
2918 | if (bs == NULL) | |
2919 | return bs; | |
2920 | ||
2921 | for (; bs != NULL; bs = bs->next) | |
2922 | { | |
2923 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2924 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2925 | incref_counted_command_line (tmp->commands); |
31cc81e9 | 2926 | if (bs->old_val != NULL) |
3c3185ac JK |
2927 | { |
2928 | tmp->old_val = value_copy (bs->old_val); | |
2929 | release_value (tmp->old_val); | |
2930 | } | |
31cc81e9 | 2931 | |
c906108c SS |
2932 | if (p == NULL) |
2933 | /* This is the first thing in the chain. */ | |
2934 | retval = tmp; | |
2935 | else | |
2936 | p->next = tmp; | |
2937 | p = tmp; | |
2938 | } | |
2939 | p->next = NULL; | |
2940 | return retval; | |
2941 | } | |
2942 | ||
2943 | /* Find the bpstat associated with this breakpoint */ | |
2944 | ||
2945 | bpstat | |
fba45db2 | 2946 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2947 | { |
c5aa993b JM |
2948 | if (bsp == NULL) |
2949 | return NULL; | |
c906108c | 2950 | |
c5aa993b JM |
2951 | for (; bsp != NULL; bsp = bsp->next) |
2952 | { | |
4f8d1dc6 | 2953 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2954 | return bsp; |
2955 | } | |
c906108c SS |
2956 | return NULL; |
2957 | } | |
2958 | ||
8671a17b | 2959 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2960 | at. *BSP upon return is a bpstat which points to the remaining |
2961 | breakpoints stopped at (but which is not guaranteed to be good for | |
2962 | anything but further calls to bpstat_num). | |
8671a17b PA |
2963 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2964 | Return -1 if stopped at a breakpoint that has been deleted since | |
2965 | we set it. | |
2966 | Return 1 otherwise. */ | |
c906108c SS |
2967 | |
2968 | int | |
8671a17b | 2969 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2970 | { |
2971 | struct breakpoint *b; | |
2972 | ||
2973 | if ((*bsp) == NULL) | |
2974 | return 0; /* No more breakpoint values */ | |
8671a17b | 2975 | |
4f8d1dc6 VP |
2976 | /* We assume we'll never have several bpstats that |
2977 | correspond to a single breakpoint -- otherwise, | |
2978 | this function might return the same number more | |
2979 | than once and this will look ugly. */ | |
2980 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2981 | *bsp = (*bsp)->next; |
2982 | if (b == NULL) | |
2983 | return -1; /* breakpoint that's been deleted since */ | |
2984 | ||
2985 | *num = b->number; /* We have its number */ | |
2986 | return 1; | |
c906108c SS |
2987 | } |
2988 | ||
2989 | /* Modify BS so that the actions will not be performed. */ | |
2990 | ||
2991 | void | |
fba45db2 | 2992 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2993 | { |
2994 | for (; bs != NULL; bs = bs->next) | |
2995 | { | |
9add0f1b | 2996 | decref_counted_command_line (&bs->commands); |
dde2d684 | 2997 | bs->commands_left = NULL; |
c906108c SS |
2998 | if (bs->old_val != NULL) |
2999 | { | |
3000 | value_free (bs->old_val); | |
3001 | bs->old_val = NULL; | |
3002 | } | |
3003 | } | |
3004 | } | |
3005 | ||
f3b1572e PA |
3006 | /* Called when a command is about to proceed the inferior. */ |
3007 | ||
3008 | static void | |
3009 | breakpoint_about_to_proceed (void) | |
3010 | { | |
3011 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3012 | { | |
3013 | struct thread_info *tp = inferior_thread (); | |
3014 | ||
3015 | /* Allow inferior function calls in breakpoint commands to not | |
3016 | interrupt the command list. When the call finishes | |
3017 | successfully, the inferior will be standing at the same | |
3018 | breakpoint as if nothing happened. */ | |
3019 | if (tp->in_infcall) | |
3020 | return; | |
3021 | } | |
3022 | ||
3023 | breakpoint_proceeded = 1; | |
3024 | } | |
3025 | ||
c906108c | 3026 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 3027 | static void |
4efb68b1 | 3028 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3029 | { |
3030 | executing_breakpoint_commands = 0; | |
3031 | } | |
3032 | ||
3033 | /* Execute all the commands associated with all the breakpoints at this | |
3034 | location. Any of these commands could cause the process to proceed | |
3035 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 3036 | the global "breakpoint_proceeded" after each command. |
c906108c | 3037 | |
347bddb7 PA |
3038 | Returns true if a breakpoint command resumed the inferior. In that |
3039 | case, it is the caller's responsibility to recall it again with the | |
3040 | bpstat of the current thread. */ | |
3041 | ||
3042 | static int | |
3043 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3044 | { |
3045 | bpstat bs; | |
3046 | struct cleanup *old_chain; | |
347bddb7 | 3047 | int again = 0; |
c906108c SS |
3048 | |
3049 | /* Avoid endless recursion if a `source' command is contained | |
3050 | in bs->commands. */ | |
3051 | if (executing_breakpoint_commands) | |
347bddb7 | 3052 | return 0; |
c906108c SS |
3053 | |
3054 | executing_breakpoint_commands = 1; | |
3055 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3056 | ||
c906108c SS |
3057 | /* This pointer will iterate over the list of bpstat's. */ |
3058 | bs = *bsp; | |
3059 | ||
3060 | breakpoint_proceeded = 0; | |
3061 | for (; bs != NULL; bs = bs->next) | |
3062 | { | |
9add0f1b | 3063 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3064 | struct command_line *cmd; |
3065 | struct cleanup *this_cmd_tree_chain; | |
3066 | ||
3067 | /* Take ownership of the BSP's command tree, if it has one. | |
3068 | ||
3069 | The command tree could legitimately contain commands like | |
3070 | 'step' and 'next', which call clear_proceed_status, which | |
3071 | frees stop_bpstat's command tree. To make sure this doesn't | |
3072 | free the tree we're executing out from under us, we need to | |
3073 | take ownership of the tree ourselves. Since a given bpstat's | |
3074 | commands are only executed once, we don't need to copy it; we | |
3075 | can clear the pointer in the bpstat, and make sure we free | |
3076 | the tree when we're done. */ | |
9add0f1b TT |
3077 | ccmd = bs->commands; |
3078 | bs->commands = NULL; | |
3079 | this_cmd_tree_chain | |
3080 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3081 | cmd = bs->commands_left; | |
3082 | bs->commands_left = NULL; | |
6c50ab1c | 3083 | |
c906108c SS |
3084 | while (cmd != NULL) |
3085 | { | |
3086 | execute_control_command (cmd); | |
3087 | ||
3088 | if (breakpoint_proceeded) | |
3089 | break; | |
3090 | else | |
3091 | cmd = cmd->next; | |
3092 | } | |
6c50ab1c JB |
3093 | |
3094 | /* We can free this command tree now. */ | |
3095 | do_cleanups (this_cmd_tree_chain); | |
3096 | ||
c906108c | 3097 | if (breakpoint_proceeded) |
32c1e744 VP |
3098 | { |
3099 | if (target_can_async_p ()) | |
347bddb7 PA |
3100 | /* If we are in async mode, then the target might be still |
3101 | running, not stopped at any breakpoint, so nothing for | |
3102 | us to do here -- just return to the event loop. */ | |
3103 | ; | |
32c1e744 VP |
3104 | else |
3105 | /* In sync mode, when execute_control_command returns | |
3106 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3107 | Breakpoint commands for that stop were not run, since |
3108 | execute_command does not run breakpoint commands -- | |
3109 | only command_line_handler does, but that one is not | |
3110 | involved in execution of breakpoint commands. So, we | |
3111 | can now execute breakpoint commands. It should be | |
3112 | noted that making execute_command do bpstat actions is | |
3113 | not an option -- in this case we'll have recursive | |
3114 | invocation of bpstat for each breakpoint with a | |
3115 | command, and can easily blow up GDB stack. Instead, we | |
3116 | return true, which will trigger the caller to recall us | |
3117 | with the new stop_bpstat. */ | |
3118 | again = 1; | |
3119 | break; | |
32c1e744 | 3120 | } |
c906108c | 3121 | } |
c2b8ed2c | 3122 | do_cleanups (old_chain); |
347bddb7 PA |
3123 | return again; |
3124 | } | |
3125 | ||
3126 | void | |
3127 | bpstat_do_actions (void) | |
3128 | { | |
3129 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3130 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3131 | && target_has_execution | |
3132 | && !is_exited (inferior_ptid) | |
3133 | && !is_executing (inferior_ptid)) | |
3134 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3135 | and only return when it is stopped at the next breakpoint, we | |
3136 | keep doing breakpoint actions until it returns false to | |
3137 | indicate the inferior was not resumed. */ | |
3138 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
3139 | break; | |
c906108c SS |
3140 | } |
3141 | ||
fa4727a6 DJ |
3142 | /* Print out the (old or new) value associated with a watchpoint. */ |
3143 | ||
3144 | static void | |
3145 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3146 | { | |
3147 | if (val == NULL) | |
3148 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3149 | else | |
79a45b7d TT |
3150 | { |
3151 | struct value_print_options opts; | |
3152 | get_user_print_options (&opts); | |
3153 | value_print (val, stream, &opts); | |
3154 | } | |
fa4727a6 DJ |
3155 | } |
3156 | ||
e514a9d6 | 3157 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3158 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3159 | by having it set different print_it values. |
3160 | ||
3161 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3162 | through the bpstat list of things causing this stop, calling the | |
3163 | print_bp_stop_message function on each one. The behavior of the | |
3164 | print_bp_stop_message function depends on the print_it field of | |
3165 | bpstat. If such field so indicates, call this function here. | |
3166 | ||
3167 | Return values from this routine (ultimately used by bpstat_print() | |
3168 | and normal_stop() to decide what to do): | |
3169 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3170 | don't print anything else. | |
3171 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3172 | that something to be followed by a location. | |
3173 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3174 | that something to be followed by a location. | |
3175 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3176 | analysis. */ | |
c906108c | 3177 | |
917317f4 | 3178 | static enum print_stop_action |
fba45db2 | 3179 | print_it_typical (bpstat bs) |
c906108c | 3180 | { |
f7545552 | 3181 | struct cleanup *old_chain; |
4f8d1dc6 | 3182 | struct breakpoint *b; |
89f9893c | 3183 | const struct bp_location *bl; |
8b93c638 | 3184 | struct ui_stream *stb; |
f7545552 TT |
3185 | int bp_temp = 0; |
3186 | enum print_stop_action result; | |
3187 | ||
c906108c SS |
3188 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3189 | which has since been deleted. */ | |
e514a9d6 | 3190 | if (bs->breakpoint_at == NULL) |
917317f4 | 3191 | return PRINT_UNKNOWN; |
0d381245 VP |
3192 | bl = bs->breakpoint_at; |
3193 | b = bl->owner; | |
c906108c | 3194 | |
f7545552 TT |
3195 | stb = ui_out_stream_new (uiout); |
3196 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3197 | ||
4f8d1dc6 | 3198 | switch (b->type) |
c906108c | 3199 | { |
e514a9d6 JM |
3200 | case bp_breakpoint: |
3201 | case bp_hardware_breakpoint: | |
2cec12e5 | 3202 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
3203 | if (bl->address != bl->requested_address) |
3204 | breakpoint_adjustment_warning (bl->requested_address, | |
3205 | bl->address, | |
4f8d1dc6 VP |
3206 | b->number, 1); |
3207 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3208 | if (bp_temp) |
3209 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3210 | else | |
3211 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3212 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3213 | { |
3214 | ui_out_field_string (uiout, "reason", | |
3215 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3216 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3217 | } | |
4f8d1dc6 | 3218 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3219 | ui_out_text (uiout, ", "); |
f7545552 | 3220 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3221 | break; |
3222 | ||
3223 | case bp_shlib_event: | |
917317f4 JM |
3224 | /* Did we stop because the user set the stop_on_solib_events |
3225 | variable? (If so, we report this as a generic, "Stopped due | |
3226 | to shlib event" message.) */ | |
a3f17187 | 3227 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3228 | result = PRINT_NOTHING; |
e514a9d6 JM |
3229 | break; |
3230 | ||
c4093a6a JM |
3231 | case bp_thread_event: |
3232 | /* Not sure how we will get here. | |
3233 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 3234 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3235 | result = PRINT_NOTHING; |
c4093a6a JM |
3236 | break; |
3237 | ||
1900040c MS |
3238 | case bp_overlay_event: |
3239 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 3240 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3241 | result = PRINT_NOTHING; |
1900040c MS |
3242 | break; |
3243 | ||
0fd8e87f UW |
3244 | case bp_longjmp_master: |
3245 | /* These should never be enabled. */ | |
3246 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3247 | result = PRINT_NOTHING; | |
3248 | break; | |
3249 | ||
aa7d318d TT |
3250 | case bp_std_terminate_master: |
3251 | /* These should never be enabled. */ | |
3252 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3253 | result = PRINT_NOTHING; | |
3254 | break; | |
3255 | ||
e514a9d6 JM |
3256 | case bp_watchpoint: |
3257 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3258 | annotate_watchpoint (b->number); |
3259 | if (ui_out_is_mi_like_p (uiout)) | |
3260 | ui_out_field_string | |
3261 | (uiout, "reason", | |
3262 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3263 | mention (b); | |
f7545552 | 3264 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3265 | ui_out_text (uiout, "\nOld value = "); |
3266 | watchpoint_value_print (bs->old_val, stb->stream); | |
3267 | ui_out_field_stream (uiout, "old", stb); | |
3268 | ui_out_text (uiout, "\nNew value = "); | |
3269 | watchpoint_value_print (b->val, stb->stream); | |
3270 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3271 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3272 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3273 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3274 | break; |
3275 | ||
3276 | case bp_read_watchpoint: | |
9dc5e2a9 | 3277 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3278 | ui_out_field_string |
3279 | (uiout, "reason", | |
3280 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3281 | mention (b); |
f7545552 | 3282 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3283 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3284 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3285 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3286 | ui_out_text (uiout, "\n"); |
f7545552 | 3287 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3288 | break; |
3289 | ||
3290 | case bp_access_watchpoint: | |
fa4727a6 | 3291 | if (bs->old_val != NULL) |
8b93c638 | 3292 | { |
4f8d1dc6 | 3293 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3294 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3295 | ui_out_field_string |
3296 | (uiout, "reason", | |
3297 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3298 | mention (b); |
f7545552 | 3299 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3300 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3301 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3302 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3303 | ui_out_text (uiout, "\nNew value = "); |
3304 | } | |
3305 | else | |
3306 | { | |
4f8d1dc6 | 3307 | mention (b); |
9dc5e2a9 | 3308 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3309 | ui_out_field_string |
3310 | (uiout, "reason", | |
3311 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3312 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3313 | ui_out_text (uiout, "\nValue = "); |
3314 | } | |
fa4727a6 | 3315 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3316 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3317 | ui_out_text (uiout, "\n"); |
f7545552 | 3318 | result = PRINT_UNKNOWN; |
e514a9d6 | 3319 | break; |
4ce44c66 | 3320 | |
e514a9d6 JM |
3321 | /* Fall through, we don't deal with these types of breakpoints |
3322 | here. */ | |
3323 | ||
11cf8741 | 3324 | case bp_finish: |
9dc5e2a9 | 3325 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3326 | ui_out_field_string |
3327 | (uiout, "reason", | |
3328 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3329 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3330 | break; |
3331 | ||
e514a9d6 | 3332 | case bp_until: |
9dc5e2a9 | 3333 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3334 | ui_out_field_string |
3335 | (uiout, "reason", | |
3336 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3337 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3338 | break; |
3339 | ||
c2d11a7d | 3340 | case bp_none: |
e514a9d6 JM |
3341 | case bp_longjmp: |
3342 | case bp_longjmp_resume: | |
3343 | case bp_step_resume: | |
e514a9d6 JM |
3344 | case bp_watchpoint_scope: |
3345 | case bp_call_dummy: | |
aa7d318d | 3346 | case bp_std_terminate: |
1042e4c0 | 3347 | case bp_tracepoint: |
7a697b8d | 3348 | case bp_fast_tracepoint: |
4efc6507 | 3349 | case bp_jit_event: |
e514a9d6 | 3350 | default: |
f7545552 TT |
3351 | result = PRINT_UNKNOWN; |
3352 | break; | |
e514a9d6 | 3353 | } |
f7545552 TT |
3354 | |
3355 | do_cleanups (old_chain); | |
3356 | return result; | |
e514a9d6 JM |
3357 | } |
3358 | ||
3359 | /* Generic routine for printing messages indicating why we | |
3360 | stopped. The behavior of this function depends on the value | |
3361 | 'print_it' in the bpstat structure. Under some circumstances we | |
3362 | may decide not to print anything here and delegate the task to | |
3363 | normal_stop(). */ | |
3364 | ||
3365 | static enum print_stop_action | |
3366 | print_bp_stop_message (bpstat bs) | |
3367 | { | |
3368 | switch (bs->print_it) | |
3369 | { | |
3370 | case print_it_noop: | |
3371 | /* Nothing should be printed for this bpstat entry. */ | |
3372 | return PRINT_UNKNOWN; | |
3373 | break; | |
3374 | ||
3375 | case print_it_done: | |
3376 | /* We still want to print the frame, but we already printed the | |
3377 | relevant messages. */ | |
3378 | return PRINT_SRC_AND_LOC; | |
3379 | break; | |
3380 | ||
3381 | case print_it_normal: | |
4f8d1dc6 | 3382 | { |
89f9893c | 3383 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3384 | struct breakpoint *b = bl ? bl->owner : NULL; |
3385 | ||
3386 | /* Normal case. Call the breakpoint's print_it method, or | |
3387 | print_it_typical. */ | |
3388 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3389 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3390 | return b->ops->print_it (b); | |
3391 | else | |
3392 | return print_it_typical (bs); | |
3393 | } | |
3394 | break; | |
3086aeae | 3395 | |
e514a9d6 | 3396 | default: |
8e65ff28 | 3397 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3398 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3399 | break; |
c906108c | 3400 | } |
c906108c SS |
3401 | } |
3402 | ||
e514a9d6 JM |
3403 | /* Print a message indicating what happened. This is called from |
3404 | normal_stop(). The input to this routine is the head of the bpstat | |
3405 | list - a list of the eventpoints that caused this stop. This | |
3406 | routine calls the generic print routine for printing a message | |
3407 | about reasons for stopping. This will print (for example) the | |
3408 | "Breakpoint n," part of the output. The return value of this | |
3409 | routine is one of: | |
c906108c | 3410 | |
917317f4 JM |
3411 | PRINT_UNKNOWN: Means we printed nothing |
3412 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3413 | code to print the location. An example is |
3414 | "Breakpoint 1, " which should be followed by | |
3415 | the location. | |
917317f4 | 3416 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3417 | to also print the location part of the message. |
3418 | An example is the catch/throw messages, which | |
917317f4 JM |
3419 | don't require a location appended to the end. |
3420 | PRINT_NOTHING: We have done some printing and we don't need any | |
3421 | further info to be printed.*/ | |
c906108c | 3422 | |
917317f4 | 3423 | enum print_stop_action |
fba45db2 | 3424 | bpstat_print (bpstat bs) |
c906108c SS |
3425 | { |
3426 | int val; | |
c5aa993b | 3427 | |
c906108c | 3428 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3429 | (Currently all watchpoints go on the bpstat whether hit or not. |
3430 | That probably could (should) be changed, provided care is taken | |
c906108c | 3431 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3432 | for (; bs; bs = bs->next) |
3433 | { | |
3434 | val = print_bp_stop_message (bs); | |
3435 | if (val == PRINT_SRC_ONLY | |
3436 | || val == PRINT_SRC_AND_LOC | |
3437 | || val == PRINT_NOTHING) | |
3438 | return val; | |
3439 | } | |
c906108c | 3440 | |
e514a9d6 JM |
3441 | /* We reached the end of the chain, or we got a null BS to start |
3442 | with and nothing was printed. */ | |
917317f4 | 3443 | return PRINT_UNKNOWN; |
c906108c SS |
3444 | } |
3445 | ||
3446 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3447 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3448 | The argument is a "struct expression *" that has been cast to char * to | |
3449 | make it pass through catch_errors. */ | |
3450 | ||
3451 | static int | |
4efb68b1 | 3452 | breakpoint_cond_eval (void *exp) |
c906108c | 3453 | { |
278cd55f | 3454 | struct value *mark = value_mark (); |
c5aa993b | 3455 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3456 | |
c906108c SS |
3457 | value_free_to_mark (mark); |
3458 | return i; | |
3459 | } | |
3460 | ||
3461 | /* Allocate a new bpstat and chain it to the current one. */ | |
3462 | ||
3463 | static bpstat | |
89f9893c | 3464 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3465 | { |
3466 | bpstat bs; | |
3467 | ||
3468 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3469 | cbs->next = bs; | |
4f8d1dc6 | 3470 | bs->breakpoint_at = bl; |
c906108c SS |
3471 | /* If the condition is false, etc., don't do the commands. */ |
3472 | bs->commands = NULL; | |
9add0f1b | 3473 | bs->commands_left = NULL; |
c906108c SS |
3474 | bs->old_val = NULL; |
3475 | bs->print_it = print_it_normal; | |
3476 | return bs; | |
3477 | } | |
3478 | \f | |
d983da9c DJ |
3479 | /* The target has stopped with waitstatus WS. Check if any hardware |
3480 | watchpoints have triggered, according to the target. */ | |
3481 | ||
3482 | int | |
3483 | watchpoints_triggered (struct target_waitstatus *ws) | |
3484 | { | |
d92524f1 | 3485 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3486 | CORE_ADDR addr; |
3487 | struct breakpoint *b; | |
3488 | ||
3489 | if (!stopped_by_watchpoint) | |
3490 | { | |
3491 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3492 | as not triggered. */ | |
3493 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3494 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3495 | b->watchpoint_triggered = watch_triggered_no; |
3496 | ||
3497 | return 0; | |
3498 | } | |
3499 | ||
3500 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3501 | { | |
3502 | /* We were stopped by a watchpoint, but we don't know where. | |
3503 | Mark all watchpoints as unknown. */ | |
3504 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3505 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3506 | b->watchpoint_triggered = watch_triggered_unknown; |
3507 | ||
3508 | return stopped_by_watchpoint; | |
3509 | } | |
3510 | ||
3511 | /* The target could report the data address. Mark watchpoints | |
3512 | affected by this data address as triggered, and all others as not | |
3513 | triggered. */ | |
3514 | ||
3515 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3516 | if (is_hardware_watchpoint (b)) |
d983da9c | 3517 | { |
a5606eee | 3518 | struct bp_location *loc; |
d983da9c DJ |
3519 | |
3520 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3521 | for (loc = b->loc; loc; loc = loc->next) |
3522 | /* Exact match not required. Within range is | |
3523 | sufficient. */ | |
5009afc5 AS |
3524 | if (target_watchpoint_addr_within_range (¤t_target, |
3525 | addr, loc->address, | |
3526 | loc->length)) | |
a5606eee VP |
3527 | { |
3528 | b->watchpoint_triggered = watch_triggered_yes; | |
3529 | break; | |
3530 | } | |
d983da9c DJ |
3531 | } |
3532 | ||
3533 | return 1; | |
3534 | } | |
3535 | ||
c906108c SS |
3536 | /* Possible return values for watchpoint_check (this can't be an enum |
3537 | because of check_errors). */ | |
3538 | /* The watchpoint has been deleted. */ | |
3539 | #define WP_DELETED 1 | |
3540 | /* The value has changed. */ | |
3541 | #define WP_VALUE_CHANGED 2 | |
3542 | /* The value has not changed. */ | |
3543 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3544 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3545 | #define WP_IGNORE 4 | |
c906108c SS |
3546 | |
3547 | #define BP_TEMPFLAG 1 | |
3548 | #define BP_HARDWAREFLAG 2 | |
3549 | ||
553e4c11 JB |
3550 | /* Evaluate watchpoint condition expression and check if its value changed. |
3551 | ||
3552 | P should be a pointer to struct bpstat, but is defined as a void * | |
3553 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3554 | |
3555 | static int | |
4efb68b1 | 3556 | watchpoint_check (void *p) |
c906108c SS |
3557 | { |
3558 | bpstat bs = (bpstat) p; | |
3559 | struct breakpoint *b; | |
3560 | struct frame_info *fr; | |
3561 | int within_current_scope; | |
3562 | ||
4f8d1dc6 | 3563 | b = bs->breakpoint_at->owner; |
c906108c | 3564 | |
f6bc2008 PA |
3565 | /* If this is a local watchpoint, we only want to check if the |
3566 | watchpoint frame is in scope if the current thread is the thread | |
3567 | that was used to create the watchpoint. */ | |
3568 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3569 | return WP_IGNORE; |
f6bc2008 | 3570 | |
c906108c SS |
3571 | if (b->exp_valid_block == NULL) |
3572 | within_current_scope = 1; | |
3573 | else | |
3574 | { | |
edb3359d DJ |
3575 | struct frame_info *frame = get_current_frame (); |
3576 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3577 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3578 | ||
a0f49112 JK |
3579 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3580 | in the function but the stack frame has already been invalidated. | |
3581 | Since we can't rely on the values of local variables after the | |
3582 | stack has been destroyed, we are treating the watchpoint in that | |
3583 | state as `not changed' without further checking. Don't mark | |
3584 | watchpoints as changed if the current frame is in an epilogue - | |
3585 | even if they are in some other frame, our view of the stack | |
3586 | is likely to be wrong and frame_find_by_id could error out. */ | |
3587 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
60e1c644 | 3588 | return WP_IGNORE; |
a0f49112 | 3589 | |
101dcfbe | 3590 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3591 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3592 | |
3593 | /* If we've gotten confused in the unwinder, we might have | |
3594 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3595 | if (within_current_scope) |
3596 | { | |
3597 | struct symbol *function; | |
3598 | ||
3599 | function = get_frame_function (fr); | |
3600 | if (function == NULL | |
3601 | || !contained_in (b->exp_valid_block, | |
3602 | SYMBOL_BLOCK_VALUE (function))) | |
3603 | within_current_scope = 0; | |
3604 | } | |
69fbadd5 | 3605 | |
edb3359d | 3606 | if (within_current_scope) |
c906108c SS |
3607 | /* If we end up stopping, the current frame will get selected |
3608 | in normal_stop. So this call to select_frame won't affect | |
3609 | the user. */ | |
0f7d239c | 3610 | select_frame (fr); |
c906108c | 3611 | } |
c5aa993b | 3612 | |
c906108c SS |
3613 | if (within_current_scope) |
3614 | { | |
3615 | /* We use value_{,free_to_}mark because it could be a | |
3616 | *long* time before we return to the command level and | |
c5aa993b JM |
3617 | call free_all_values. We can't call free_all_values because |
3618 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3619 | |
278cd55f | 3620 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3621 | struct value *new_val; |
3622 | ||
3623 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3624 | |
3625 | /* We use value_equal_contents instead of value_equal because the latter | |
3626 | coerces an array to a pointer, thus comparing just the address of the | |
3627 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3628 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3629 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3630 | { |
fa4727a6 DJ |
3631 | if (new_val != NULL) |
3632 | { | |
3633 | release_value (new_val); | |
3634 | value_free_to_mark (mark); | |
3635 | } | |
c906108c SS |
3636 | bs->old_val = b->val; |
3637 | b->val = new_val; | |
fa4727a6 | 3638 | b->val_valid = 1; |
c906108c SS |
3639 | return WP_VALUE_CHANGED; |
3640 | } | |
3641 | else | |
3642 | { | |
60e1c644 | 3643 | /* Nothing changed. */ |
c906108c | 3644 | value_free_to_mark (mark); |
c906108c SS |
3645 | return WP_VALUE_NOT_CHANGED; |
3646 | } | |
3647 | } | |
3648 | else | |
3649 | { | |
3650 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3651 | if we temporarily ignored the watchpoint, then when |
3652 | we reenter the block in which it is valid it contains | |
3653 | garbage (in the case of a function, it may have two | |
3654 | garbage values, one before and one after the prologue). | |
3655 | So we can't even detect the first assignment to it and | |
3656 | watch after that (since the garbage may or may not equal | |
3657 | the first value assigned). */ | |
4ce44c66 JM |
3658 | /* We print all the stop information in print_it_typical(), but |
3659 | in this case, by the time we call print_it_typical() this bp | |
3660 | will be deleted already. So we have no choice but print the | |
3661 | information here. */ | |
9dc5e2a9 | 3662 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3663 | ui_out_field_string |
3664 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3665 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3666 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3667 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3668 | which its expression is valid.\n"); | |
4ce44c66 | 3669 | |
c906108c | 3670 | if (b->related_breakpoint) |
60e1c644 PA |
3671 | { |
3672 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3673 | b->related_breakpoint->related_breakpoint = NULL; | |
3674 | b->related_breakpoint = NULL; | |
3675 | } | |
b5de0fa7 | 3676 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3677 | |
3678 | return WP_DELETED; | |
3679 | } | |
3680 | } | |
3681 | ||
18a18393 VP |
3682 | /* Return true if it looks like target has stopped due to hitting |
3683 | breakpoint location BL. This function does not check if we | |
3684 | should stop, only if BL explains the stop. */ | |
3685 | static int | |
6c95b8df PA |
3686 | bpstat_check_location (const struct bp_location *bl, |
3687 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3688 | { |
3689 | struct breakpoint *b = bl->owner; | |
3690 | ||
e8595ef6 SS |
3691 | /* By definition, the inferior does not report stops at |
3692 | tracepoints. */ | |
d77f58be | 3693 | if (is_tracepoint (b)) |
e8595ef6 SS |
3694 | return 0; |
3695 | ||
cc60f2e3 | 3696 | if (!is_watchpoint (b) |
18a18393 | 3697 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3698 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3699 | { |
6c95b8df PA |
3700 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3701 | aspace, bp_addr)) | |
18a18393 VP |
3702 | return 0; |
3703 | if (overlay_debugging /* unmapped overlay section */ | |
3704 | && section_is_overlay (bl->section) | |
3705 | && !section_is_mapped (bl->section)) | |
3706 | return 0; | |
3707 | } | |
cc60f2e3 | 3708 | |
18a18393 VP |
3709 | /* Continuable hardware watchpoints are treated as non-existent if the |
3710 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3711 | some data address). Otherwise gdb won't stop on a break instruction | |
3712 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3713 | been defined. Also skip watchpoints which we know did not trigger | |
3714 | (did not match the data address). */ | |
cc60f2e3 PA |
3715 | |
3716 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3717 | && b->watchpoint_triggered == watch_triggered_no) |
3718 | return 0; | |
3719 | ||
3720 | if (b->type == bp_hardware_breakpoint) | |
3721 | { | |
3722 | if (bl->address != bp_addr) | |
3723 | return 0; | |
3724 | if (overlay_debugging /* unmapped overlay section */ | |
3725 | && section_is_overlay (bl->section) | |
3726 | && !section_is_mapped (bl->section)) | |
3727 | return 0; | |
3728 | } | |
ce78b96d | 3729 | |
ce78b96d JB |
3730 | if (b->type == bp_catchpoint) |
3731 | { | |
3732 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3733 | if (!b->ops->breakpoint_hit (b)) | |
3734 | return 0; | |
3735 | } | |
3736 | ||
18a18393 VP |
3737 | return 1; |
3738 | } | |
3739 | ||
3740 | /* If BS refers to a watchpoint, determine if the watched values | |
3741 | has actually changed, and we should stop. If not, set BS->stop | |
3742 | to 0. */ | |
3743 | static void | |
3744 | bpstat_check_watchpoint (bpstat bs) | |
3745 | { | |
3746 | const struct bp_location *bl = bs->breakpoint_at; | |
3747 | struct breakpoint *b = bl->owner; | |
3748 | ||
cc60f2e3 | 3749 | if (is_watchpoint (b)) |
18a18393 | 3750 | { |
18a18393 VP |
3751 | int must_check_value = 0; |
3752 | ||
3753 | if (b->type == bp_watchpoint) | |
3754 | /* For a software watchpoint, we must always check the | |
3755 | watched value. */ | |
3756 | must_check_value = 1; | |
3757 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3758 | /* We have a hardware watchpoint (read, write, or access) | |
3759 | and the target earlier reported an address watched by | |
3760 | this watchpoint. */ | |
3761 | must_check_value = 1; | |
3762 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3763 | && b->type == bp_hardware_watchpoint) | |
3764 | /* We were stopped by a hardware watchpoint, but the target could | |
3765 | not report the data address. We must check the watchpoint's | |
3766 | value. Access and read watchpoints are out of luck; without | |
3767 | a data address, we can't figure it out. */ | |
3768 | must_check_value = 1; | |
3769 | ||
3770 | if (must_check_value) | |
3771 | { | |
3772 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3773 | b->number); | |
3774 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3775 | int e = catch_errors (watchpoint_check, bs, message, | |
3776 | RETURN_MASK_ALL); | |
3777 | do_cleanups (cleanups); | |
3778 | switch (e) | |
3779 | { | |
3780 | case WP_DELETED: | |
3781 | /* We've already printed what needs to be printed. */ | |
3782 | bs->print_it = print_it_done; | |
3783 | /* Stop. */ | |
3784 | break; | |
60e1c644 PA |
3785 | case WP_IGNORE: |
3786 | bs->print_it = print_it_noop; | |
3787 | bs->stop = 0; | |
3788 | break; | |
18a18393 VP |
3789 | case WP_VALUE_CHANGED: |
3790 | if (b->type == bp_read_watchpoint) | |
3791 | { | |
85d721b8 PA |
3792 | /* There are two cases to consider here: |
3793 | ||
3794 | 1. we're watching the triggered memory for reads. | |
3795 | In that case, trust the target, and always report | |
3796 | the watchpoint hit to the user. Even though | |
3797 | reads don't cause value changes, the value may | |
3798 | have changed since the last time it was read, and | |
3799 | since we're not trapping writes, we will not see | |
3800 | those, and as such we should ignore our notion of | |
3801 | old value. | |
3802 | ||
3803 | 2. we're watching the triggered memory for both | |
3804 | reads and writes. There are two ways this may | |
3805 | happen: | |
3806 | ||
3807 | 2.1. this is a target that can't break on data | |
3808 | reads only, but can break on accesses (reads or | |
3809 | writes), such as e.g., x86. We detect this case | |
3810 | at the time we try to insert read watchpoints. | |
3811 | ||
3812 | 2.2. otherwise, the target supports read | |
3813 | watchpoints, but, the user set an access or write | |
3814 | watchpoint watching the same memory as this read | |
3815 | watchpoint. | |
3816 | ||
3817 | If we're watching memory writes as well as reads, | |
3818 | ignore watchpoint hits when we find that the | |
3819 | value hasn't changed, as reads don't cause | |
3820 | changes. This still gives false positives when | |
3821 | the program writes the same value to memory as | |
3822 | what there was already in memory (we will confuse | |
3823 | it for a read), but it's much better than | |
3824 | nothing. */ | |
3825 | ||
3826 | int other_write_watchpoint = 0; | |
3827 | ||
3828 | if (bl->watchpoint_type == hw_read) | |
3829 | { | |
3830 | struct breakpoint *other_b; | |
3831 | ||
3832 | ALL_BREAKPOINTS (other_b) | |
3833 | if ((other_b->type == bp_hardware_watchpoint | |
3834 | || other_b->type == bp_access_watchpoint) | |
3835 | && (other_b->watchpoint_triggered | |
3836 | == watch_triggered_yes)) | |
3837 | { | |
3838 | other_write_watchpoint = 1; | |
3839 | break; | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | if (other_write_watchpoint | |
3844 | || bl->watchpoint_type == hw_access) | |
3845 | { | |
3846 | /* We're watching the same memory for writes, | |
3847 | and the value changed since the last time we | |
3848 | updated it, so this trap must be for a write. | |
3849 | Ignore it. */ | |
3850 | bs->print_it = print_it_noop; | |
3851 | bs->stop = 0; | |
3852 | } | |
18a18393 VP |
3853 | } |
3854 | break; | |
3855 | case WP_VALUE_NOT_CHANGED: | |
3856 | if (b->type == bp_hardware_watchpoint | |
3857 | || b->type == bp_watchpoint) | |
3858 | { | |
3859 | /* Don't stop: write watchpoints shouldn't fire if | |
3860 | the value hasn't changed. */ | |
3861 | bs->print_it = print_it_noop; | |
3862 | bs->stop = 0; | |
3863 | } | |
3864 | /* Stop. */ | |
3865 | break; | |
3866 | default: | |
3867 | /* Can't happen. */ | |
3868 | case 0: | |
3869 | /* Error from catch_errors. */ | |
3870 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3871 | if (b->related_breakpoint) | |
3872 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3873 | b->disposition = disp_del_at_next_stop; | |
3874 | /* We've already printed what needs to be printed. */ | |
3875 | bs->print_it = print_it_done; | |
3876 | break; | |
3877 | } | |
3878 | } | |
3879 | else /* must_check_value == 0 */ | |
3880 | { | |
3881 | /* This is a case where some watchpoint(s) triggered, but | |
3882 | not at the address of this watchpoint, or else no | |
3883 | watchpoint triggered after all. So don't print | |
3884 | anything for this watchpoint. */ | |
3885 | bs->print_it = print_it_noop; | |
3886 | bs->stop = 0; | |
3887 | } | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | ||
3892 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3893 | of breakpoint referred to by BS. If we should not stop for this | |
3894 | breakpoint, set BS->stop to 0. */ | |
3895 | static void | |
3896 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3897 | { | |
3898 | int thread_id = pid_to_thread_id (ptid); | |
3899 | const struct bp_location *bl = bs->breakpoint_at; | |
3900 | struct breakpoint *b = bl->owner; | |
3901 | ||
3902 | if (frame_id_p (b->frame_id) | |
edb3359d | 3903 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3904 | bs->stop = 0; |
3905 | else if (bs->stop) | |
3906 | { | |
3907 | int value_is_zero = 0; | |
60e1c644 PA |
3908 | struct expression *cond; |
3909 | ||
18a18393 VP |
3910 | /* If this is a scope breakpoint, mark the associated |
3911 | watchpoint as triggered so that we will handle the | |
3912 | out-of-scope event. We'll get to the watchpoint next | |
3913 | iteration. */ | |
3914 | if (b->type == bp_watchpoint_scope) | |
3915 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
60e1c644 PA |
3916 | |
3917 | if (is_watchpoint (b)) | |
3918 | cond = b->cond_exp; | |
3919 | else | |
3920 | cond = bl->cond; | |
3921 | ||
3922 | if (cond && bl->owner->disposition != disp_del_at_next_stop) | |
18a18393 | 3923 | { |
60e1c644 PA |
3924 | int within_current_scope = 1; |
3925 | ||
c5bc3a77 DJ |
3926 | /* We use value_mark and value_free_to_mark because it could |
3927 | be a long time before we return to the command level and | |
3928 | call free_all_values. We can't call free_all_values | |
3929 | because we might be in the middle of evaluating a | |
3930 | function call. */ | |
3931 | struct value *mark = value_mark (); | |
3932 | ||
edb3359d DJ |
3933 | /* Need to select the frame, with all that implies so that |
3934 | the conditions will have the right context. Because we | |
3935 | use the frame, we will not see an inlined function's | |
3936 | variables when we arrive at a breakpoint at the start | |
3937 | of the inlined function; the current frame will be the | |
3938 | call site. */ | |
60e1c644 PA |
3939 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
3940 | select_frame (get_current_frame ()); | |
3941 | else | |
3942 | { | |
3943 | struct frame_info *frame; | |
3944 | ||
3945 | /* For local watchpoint expressions, which particular | |
3946 | instance of a local is being watched matters, so we | |
3947 | keep track of the frame to evaluate the expression | |
3948 | in. To evaluate the condition however, it doesn't | |
3949 | really matter which instantiation of the function | |
3950 | where the condition makes sense triggers the | |
3951 | watchpoint. This allows an expression like "watch | |
3952 | global if q > 10" set in `func', catch writes to | |
3953 | global on all threads that call `func', or catch | |
3954 | writes on all recursive calls of `func' by a single | |
3955 | thread. We simply always evaluate the condition in | |
3956 | the innermost frame that's executing where it makes | |
3957 | sense to evaluate the condition. It seems | |
3958 | intuitive. */ | |
3959 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
3960 | if (frame != NULL) | |
3961 | select_frame (frame); | |
3962 | else | |
3963 | within_current_scope = 0; | |
3964 | } | |
3965 | if (within_current_scope) | |
3966 | value_is_zero | |
3967 | = catch_errors (breakpoint_cond_eval, cond, | |
3968 | "Error in testing breakpoint condition:\n", | |
3969 | RETURN_MASK_ALL); | |
3970 | else | |
3971 | { | |
3972 | warning (_("Watchpoint condition cannot be tested " | |
3973 | "in the current scope")); | |
3974 | /* If we failed to set the right context for this | |
3975 | watchpoint, unconditionally report it. */ | |
3976 | value_is_zero = 0; | |
3977 | } | |
18a18393 | 3978 | /* FIXME-someday, should give breakpoint # */ |
c5bc3a77 | 3979 | value_free_to_mark (mark); |
18a18393 | 3980 | } |
60e1c644 PA |
3981 | |
3982 | if (cond && value_is_zero) | |
18a18393 VP |
3983 | { |
3984 | bs->stop = 0; | |
3985 | } | |
3986 | else if (b->thread != -1 && b->thread != thread_id) | |
3987 | { | |
3988 | bs->stop = 0; | |
3989 | } | |
3990 | else if (b->ignore_count > 0) | |
3991 | { | |
3992 | b->ignore_count--; | |
3993 | annotate_ignore_count_change (); | |
3994 | bs->stop = 0; | |
3995 | /* Increase the hit count even though we don't | |
3996 | stop. */ | |
3997 | ++(b->hit_count); | |
3998 | } | |
3999 | } | |
4000 | } | |
4001 | ||
4002 | ||
9709f61c | 4003 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4004 | BP_ADDR in thread PTID. |
c906108c | 4005 | |
d983da9c | 4006 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
4007 | don't understand this stop. Result is a chain of bpstat's such that: |
4008 | ||
c5aa993b | 4009 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4010 | |
c5aa993b | 4011 | if we understand why we stopped, the result is not null. |
c906108c | 4012 | |
c5aa993b JM |
4013 | Each element of the chain refers to a particular breakpoint or |
4014 | watchpoint at which we have stopped. (We may have stopped for | |
4015 | several reasons concurrently.) | |
c906108c | 4016 | |
c5aa993b JM |
4017 | Each element of the chain has valid next, breakpoint_at, |
4018 | commands, FIXME??? fields. */ | |
c906108c SS |
4019 | |
4020 | bpstat | |
6c95b8df PA |
4021 | bpstat_stop_status (struct address_space *aspace, |
4022 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4023 | { |
0d381245 | 4024 | struct breakpoint *b = NULL; |
afe38095 | 4025 | struct bp_location *bl; |
20874c92 | 4026 | struct bp_location *loc; |
c906108c SS |
4027 | /* Root of the chain of bpstat's */ |
4028 | struct bpstats root_bs[1]; | |
4029 | /* Pointer to the last thing in the chain currently. */ | |
4030 | bpstat bs = root_bs; | |
20874c92 | 4031 | int ix; |
429374b8 | 4032 | int need_remove_insert; |
c906108c | 4033 | |
429374b8 JK |
4034 | /* ALL_BP_LOCATIONS iteration would break across |
4035 | update_global_location_list possibly executed by | |
4036 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 4037 | |
429374b8 JK |
4038 | ALL_BREAKPOINTS (b) |
4039 | { | |
4040 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4041 | continue; | |
a5606eee | 4042 | |
429374b8 JK |
4043 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4044 | { | |
4045 | /* For hardware watchpoints, we look only at the first location. | |
cc60f2e3 PA |
4046 | The watchpoint_check function will work on the entire expression, |
4047 | not the individual locations. For read watchpoints, the | |
4048 | watchpoints_triggered function has checked all locations | |
429374b8 JK |
4049 | already. */ |
4050 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
4051 | break; | |
18a18393 | 4052 | |
429374b8 JK |
4053 | if (bl->shlib_disabled) |
4054 | continue; | |
c5aa993b | 4055 | |
429374b8 JK |
4056 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4057 | continue; | |
c5aa993b | 4058 | |
429374b8 | 4059 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 4060 | |
429374b8 | 4061 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 4062 | |
429374b8 JK |
4063 | /* Assume we stop. Should we find watchpoint that is not actually |
4064 | triggered, or if condition of breakpoint is false, we'll reset | |
4065 | 'stop' to 0. */ | |
4066 | bs->stop = 1; | |
4067 | bs->print = 1; | |
d983da9c | 4068 | |
429374b8 JK |
4069 | bpstat_check_watchpoint (bs); |
4070 | if (!bs->stop) | |
4071 | continue; | |
18a18393 | 4072 | |
429374b8 | 4073 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d TT |
4074 | || b->type == bp_longjmp_master |
4075 | || b->type == bp_std_terminate_master) | |
429374b8 JK |
4076 | /* We do not stop for these. */ |
4077 | bs->stop = 0; | |
4078 | else | |
4079 | bpstat_check_breakpoint_conditions (bs, ptid); | |
4080 | ||
4081 | if (bs->stop) | |
4082 | { | |
4083 | ++(b->hit_count); | |
c906108c | 4084 | |
429374b8 JK |
4085 | /* We will stop here */ |
4086 | if (b->disposition == disp_disable) | |
4087 | { | |
4088 | if (b->enable_state != bp_permanent) | |
4089 | b->enable_state = bp_disabled; | |
4090 | update_global_location_list (0); | |
4091 | } | |
4092 | if (b->silent) | |
4093 | bs->print = 0; | |
4094 | bs->commands = b->commands; | |
9add0f1b TT |
4095 | incref_counted_command_line (bs->commands); |
4096 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4097 | if (bs->commands_left | |
4098 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4099 | || (xdb_commands | |
4100 | && strcmp ("Q", | |
4101 | bs->commands_left->line) == 0))) | |
429374b8 | 4102 | { |
9add0f1b | 4103 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4104 | bs->print = 0; |
4105 | } | |
429374b8 JK |
4106 | } |
4107 | ||
4108 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4109 | if (bs->stop == 0 || bs->print == 0) | |
4110 | bs->print_it = print_it_noop; | |
4111 | } | |
4112 | } | |
876fa593 | 4113 | |
20874c92 VP |
4114 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
4115 | { | |
6c95b8df PA |
4116 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
4117 | aspace, bp_addr)) | |
20874c92 VP |
4118 | { |
4119 | bs = bpstat_alloc (loc, bs); | |
4120 | /* For hits of moribund locations, we should just proceed. */ | |
4121 | bs->stop = 0; | |
4122 | bs->print = 0; | |
4123 | bs->print_it = print_it_noop; | |
4124 | } | |
4125 | } | |
4126 | ||
c906108c | 4127 | bs->next = NULL; /* Terminate the chain */ |
c906108c | 4128 | |
d983da9c DJ |
4129 | /* If we aren't stopping, the value of some hardware watchpoint may |
4130 | not have changed, but the intermediate memory locations we are | |
4131 | watching may have. Don't bother if we're stopping; this will get | |
4132 | done later. */ | |
d832cb68 | 4133 | need_remove_insert = 0; |
1f7ccab2 | 4134 | if (! bpstat_causes_stop (root_bs->next)) |
d983da9c DJ |
4135 | for (bs = root_bs->next; bs != NULL; bs = bs->next) |
4136 | if (!bs->stop | |
20874c92 | 4137 | && bs->breakpoint_at->owner |
2d134ed3 | 4138 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 4139 | { |
2d134ed3 PA |
4140 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
4141 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
4142 | Prevent further code from trying to use it. */ | |
a5606eee | 4143 | bs->breakpoint_at = NULL; |
d832cb68 | 4144 | need_remove_insert = 1; |
d983da9c DJ |
4145 | } |
4146 | ||
d832cb68 | 4147 | if (need_remove_insert) |
2d134ed3 | 4148 | update_global_location_list (1); |
d832cb68 | 4149 | |
d983da9c | 4150 | return root_bs->next; |
c906108c SS |
4151 | } |
4152 | \f | |
4153 | /* Tell what to do about this bpstat. */ | |
4154 | struct bpstat_what | |
fba45db2 | 4155 | bpstat_what (bpstat bs) |
c906108c SS |
4156 | { |
4157 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
4158 | enum class |
4159 | { | |
4160 | /* This bpstat element has no effect on the main_action. */ | |
4161 | no_effect = 0, | |
4162 | ||
4163 | /* There was a watchpoint, stop but don't print. */ | |
4164 | wp_silent, | |
c906108c | 4165 | |
c5aa993b JM |
4166 | /* There was a watchpoint, stop and print. */ |
4167 | wp_noisy, | |
c906108c | 4168 | |
c5aa993b JM |
4169 | /* There was a breakpoint but we're not stopping. */ |
4170 | bp_nostop, | |
c906108c | 4171 | |
c5aa993b JM |
4172 | /* There was a breakpoint, stop but don't print. */ |
4173 | bp_silent, | |
c906108c | 4174 | |
c5aa993b JM |
4175 | /* There was a breakpoint, stop and print. */ |
4176 | bp_noisy, | |
c906108c | 4177 | |
c5aa993b JM |
4178 | /* We hit the longjmp breakpoint. */ |
4179 | long_jump, | |
c906108c | 4180 | |
c5aa993b JM |
4181 | /* We hit the longjmp_resume breakpoint. */ |
4182 | long_resume, | |
c906108c | 4183 | |
c5aa993b JM |
4184 | /* We hit the step_resume breakpoint. */ |
4185 | step_resume, | |
c906108c | 4186 | |
c5aa993b JM |
4187 | /* We hit the shared library event breakpoint. */ |
4188 | shlib_event, | |
c906108c | 4189 | |
4efc6507 DE |
4190 | /* We hit the jit event breakpoint. */ |
4191 | jit_event, | |
4192 | ||
c5aa993b JM |
4193 | /* This is just used to count how many enums there are. */ |
4194 | class_last | |
c906108c SS |
4195 | }; |
4196 | ||
4197 | /* Here is the table which drives this routine. So that we can | |
4198 | format it pretty, we define some abbreviations for the | |
4199 | enum bpstat_what codes. */ | |
4200 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
4201 | #define ss BPSTAT_WHAT_STOP_SILENT | |
4202 | #define sn BPSTAT_WHAT_STOP_NOISY | |
4203 | #define sgl BPSTAT_WHAT_SINGLE | |
4204 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
4205 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 4206 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 4207 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 4208 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
4209 | |
4210 | /* "Can't happen." Might want to print an error message. | |
4211 | abort() is not out of the question, but chances are GDB is just | |
4212 | a bit confused, not unusable. */ | |
4213 | #define err BPSTAT_WHAT_STOP_NOISY | |
4214 | ||
4215 | /* Given an old action and a class, come up with a new action. */ | |
4216 | /* One interesting property of this table is that wp_silent is the same | |
4217 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
4218 | after stopping, the check for whether to step over a breakpoint | |
4219 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
4220 | reference to how we stopped. We retain separate wp_silent and |
4221 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
4222 | |
4223 | Another possibly interesting property of this table is that | |
4224 | there's a partial ordering, priority-like, of the actions. Once | |
4225 | you've decided that some action is appropriate, you'll never go | |
4226 | back and decide something of a lower priority is better. The | |
4227 | ordering is: | |
4228 | ||
4efc6507 DE |
4229 | kc < jit clr sgl shl slr sn sr ss |
4230 | sgl < jit shl slr sn sr ss | |
4231 | slr < jit err shl sn sr ss | |
4232 | clr < jit err shl sn sr ss | |
4233 | ss < jit shl sn sr | |
4234 | sn < jit shl sr | |
4235 | jit < shl sr | |
d81191fc | 4236 | shl < sr |
4d5b2cd7 | 4237 | sr < |
c5aa993b | 4238 | |
43ff13b4 JM |
4239 | What I think this means is that we don't need a damned table |
4240 | here. If you just put the rows and columns in the right order, | |
4241 | it'd look awfully regular. We could simply walk the bpstat list | |
4242 | and choose the highest priority action we find, with a little | |
78b6a731 | 4243 | logic to handle the 'err' cases. */ |
c906108c SS |
4244 | |
4245 | /* step_resume entries: a step resume breakpoint overrides another | |
4246 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 4247 | at where we set the step_resume breakpoint). */ |
c906108c SS |
4248 | |
4249 | static const enum bpstat_what_main_action | |
c5aa993b JM |
4250 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
4251 | { | |
4252 | /* old action */ | |
4efc6507 DE |
4253 | /* kc ss sn sgl slr clr sr shl jit */ |
4254 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
4255 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4256 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4257 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
4258 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4259 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4260 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
4261 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
4262 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
4263 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
4264 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 4265 | }; |
c906108c SS |
4266 | |
4267 | #undef kc | |
4268 | #undef ss | |
4269 | #undef sn | |
4270 | #undef sgl | |
4271 | #undef slr | |
4272 | #undef clr | |
c906108c SS |
4273 | #undef err |
4274 | #undef sr | |
4275 | #undef ts | |
4276 | #undef shl | |
4efc6507 | 4277 | #undef jit |
c906108c SS |
4278 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
4279 | struct bpstat_what retval; | |
4280 | ||
aa7d318d | 4281 | retval.call_dummy = STOP_NONE; |
c906108c SS |
4282 | for (; bs != NULL; bs = bs->next) |
4283 | { | |
4284 | enum class bs_class = no_effect; | |
4285 | if (bs->breakpoint_at == NULL) | |
4286 | /* I suspect this can happen if it was a momentary breakpoint | |
4287 | which has since been deleted. */ | |
4288 | continue; | |
20874c92 VP |
4289 | if (bs->breakpoint_at->owner == NULL) |
4290 | bs_class = bp_nostop; | |
4291 | else | |
4f8d1dc6 | 4292 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
4293 | { |
4294 | case bp_none: | |
4295 | continue; | |
4296 | ||
4297 | case bp_breakpoint: | |
4298 | case bp_hardware_breakpoint: | |
4299 | case bp_until: | |
4300 | case bp_finish: | |
4301 | if (bs->stop) | |
4302 | { | |
4303 | if (bs->print) | |
4304 | bs_class = bp_noisy; | |
4305 | else | |
4306 | bs_class = bp_silent; | |
4307 | } | |
4308 | else | |
4309 | bs_class = bp_nostop; | |
4310 | break; | |
4311 | case bp_watchpoint: | |
4312 | case bp_hardware_watchpoint: | |
4313 | case bp_read_watchpoint: | |
4314 | case bp_access_watchpoint: | |
4315 | if (bs->stop) | |
4316 | { | |
4317 | if (bs->print) | |
4318 | bs_class = wp_noisy; | |
4319 | else | |
4320 | bs_class = wp_silent; | |
4321 | } | |
4322 | else | |
53a5351d JM |
4323 | /* There was a watchpoint, but we're not stopping. |
4324 | This requires no further action. */ | |
c906108c SS |
4325 | bs_class = no_effect; |
4326 | break; | |
4327 | case bp_longjmp: | |
4328 | bs_class = long_jump; | |
4329 | break; | |
4330 | case bp_longjmp_resume: | |
4331 | bs_class = long_resume; | |
4332 | break; | |
4333 | case bp_step_resume: | |
4334 | if (bs->stop) | |
4335 | { | |
4336 | bs_class = step_resume; | |
4337 | } | |
4338 | else | |
4339 | /* It is for the wrong frame. */ | |
4340 | bs_class = bp_nostop; | |
4341 | break; | |
c906108c SS |
4342 | case bp_watchpoint_scope: |
4343 | bs_class = bp_nostop; | |
4344 | break; | |
c5aa993b JM |
4345 | case bp_shlib_event: |
4346 | bs_class = shlib_event; | |
4347 | break; | |
4efc6507 DE |
4348 | case bp_jit_event: |
4349 | bs_class = jit_event; | |
4350 | break; | |
c4093a6a | 4351 | case bp_thread_event: |
1900040c | 4352 | case bp_overlay_event: |
0fd8e87f | 4353 | case bp_longjmp_master: |
aa7d318d | 4354 | case bp_std_terminate_master: |
c4093a6a JM |
4355 | bs_class = bp_nostop; |
4356 | break; | |
ce78b96d | 4357 | case bp_catchpoint: |
c5aa993b JM |
4358 | if (bs->stop) |
4359 | { | |
4360 | if (bs->print) | |
4361 | bs_class = bp_noisy; | |
4362 | else | |
4363 | bs_class = bp_silent; | |
4364 | } | |
4365 | else | |
53a5351d JM |
4366 | /* There was a catchpoint, but we're not stopping. |
4367 | This requires no further action. */ | |
c5aa993b JM |
4368 | bs_class = no_effect; |
4369 | break; | |
c906108c | 4370 | case bp_call_dummy: |
53a5351d JM |
4371 | /* Make sure the action is stop (silent or noisy), |
4372 | so infrun.c pops the dummy frame. */ | |
c906108c | 4373 | bs_class = bp_silent; |
aa7d318d TT |
4374 | retval.call_dummy = STOP_STACK_DUMMY; |
4375 | break; | |
4376 | case bp_std_terminate: | |
4377 | /* Make sure the action is stop (silent or noisy), | |
4378 | so infrun.c pops the dummy frame. */ | |
4379 | bs_class = bp_silent; | |
4380 | retval.call_dummy = STOP_STD_TERMINATE; | |
c906108c | 4381 | break; |
1042e4c0 | 4382 | case bp_tracepoint: |
7a697b8d | 4383 | case bp_fast_tracepoint: |
1042e4c0 SS |
4384 | /* Tracepoint hits should not be reported back to GDB, and |
4385 | if one got through somehow, it should have been filtered | |
4386 | out already. */ | |
4387 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4388 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 4389 | break; |
c906108c | 4390 | } |
c5aa993b | 4391 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
4392 | } |
4393 | retval.main_action = current_action; | |
4394 | return retval; | |
4395 | } | |
4396 | ||
4397 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4398 | without hardware support). This isn't related to a specific bpstat, | |
4399 | just to things like whether watchpoints are set. */ | |
4400 | ||
c5aa993b | 4401 | int |
fba45db2 | 4402 | bpstat_should_step (void) |
c906108c SS |
4403 | { |
4404 | struct breakpoint *b; | |
cc59ec59 | 4405 | |
c906108c | 4406 | ALL_BREAKPOINTS (b) |
717a8278 | 4407 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4408 | return 1; |
c906108c SS |
4409 | return 0; |
4410 | } | |
4411 | ||
67822962 PA |
4412 | int |
4413 | bpstat_causes_stop (bpstat bs) | |
4414 | { | |
4415 | for (; bs != NULL; bs = bs->next) | |
4416 | if (bs->stop) | |
4417 | return 1; | |
4418 | ||
4419 | return 0; | |
4420 | } | |
4421 | ||
c906108c | 4422 | \f |
c5aa993b | 4423 | |
859825b8 JK |
4424 | /* Print the LOC location out of the list of B->LOC locations. */ |
4425 | ||
0d381245 VP |
4426 | static void print_breakpoint_location (struct breakpoint *b, |
4427 | struct bp_location *loc, | |
4428 | char *wrap_indent, | |
4429 | struct ui_stream *stb) | |
4430 | { | |
6c95b8df PA |
4431 | struct cleanup *old_chain = save_current_program_space (); |
4432 | ||
859825b8 JK |
4433 | if (loc != NULL && loc->shlib_disabled) |
4434 | loc = NULL; | |
4435 | ||
6c95b8df PA |
4436 | if (loc != NULL) |
4437 | set_current_program_space (loc->pspace); | |
4438 | ||
859825b8 | 4439 | if (b->source_file && loc) |
0d381245 VP |
4440 | { |
4441 | struct symbol *sym | |
4442 | = find_pc_sect_function (loc->address, loc->section); | |
4443 | if (sym) | |
4444 | { | |
4445 | ui_out_text (uiout, "in "); | |
4446 | ui_out_field_string (uiout, "func", | |
4447 | SYMBOL_PRINT_NAME (sym)); | |
4448 | ui_out_wrap_hint (uiout, wrap_indent); | |
4449 | ui_out_text (uiout, " at "); | |
4450 | } | |
4451 | ui_out_field_string (uiout, "file", b->source_file); | |
4452 | ui_out_text (uiout, ":"); | |
4453 | ||
4454 | if (ui_out_is_mi_like_p (uiout)) | |
4455 | { | |
4456 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4457 | char *fullname = symtab_to_fullname (sal.symtab); | |
4458 | ||
4459 | if (fullname) | |
4460 | ui_out_field_string (uiout, "fullname", fullname); | |
4461 | } | |
4462 | ||
4463 | ui_out_field_int (uiout, "line", b->line_number); | |
4464 | } | |
859825b8 | 4465 | else if (loc) |
0d381245 | 4466 | { |
22e722e1 DJ |
4467 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4468 | demangle, ""); | |
0d381245 VP |
4469 | ui_out_field_stream (uiout, "at", stb); |
4470 | } | |
859825b8 JK |
4471 | else |
4472 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4473 | |
4474 | do_cleanups (old_chain); | |
0d381245 VP |
4475 | } |
4476 | ||
c4093a6a | 4477 | /* Print B to gdb_stdout. */ |
c906108c | 4478 | static void |
0d381245 VP |
4479 | print_one_breakpoint_location (struct breakpoint *b, |
4480 | struct bp_location *loc, | |
4481 | int loc_number, | |
a6d9a66e | 4482 | struct bp_location **last_loc, |
6c95b8df PA |
4483 | int print_address_bits, |
4484 | int allflag) | |
c906108c | 4485 | { |
52f0bd74 | 4486 | struct command_line *l; |
c4093a6a JM |
4487 | struct ep_type_description |
4488 | { | |
4489 | enum bptype type; | |
4490 | char *description; | |
4491 | }; | |
4492 | static struct ep_type_description bptypes[] = | |
c906108c | 4493 | { |
c5aa993b JM |
4494 | {bp_none, "?deleted?"}, |
4495 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4496 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4497 | {bp_until, "until"}, |
4498 | {bp_finish, "finish"}, | |
4499 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4500 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4501 | {bp_read_watchpoint, "read watchpoint"}, |
4502 | {bp_access_watchpoint, "acc watchpoint"}, | |
4503 | {bp_longjmp, "longjmp"}, | |
4504 | {bp_longjmp_resume, "longjmp resume"}, | |
4505 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4506 | {bp_watchpoint_scope, "watchpoint scope"}, |
4507 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4508 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4509 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4510 | {bp_thread_event, "thread events"}, |
1900040c | 4511 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4512 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4513 | {bp_std_terminate_master, "std::terminate master"}, |
ce78b96d | 4514 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4515 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4516 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4517 | {bp_jit_event, "jit events"}, |
c5aa993b | 4518 | }; |
c4093a6a | 4519 | |
c2c6d25f | 4520 | static char bpenables[] = "nynny"; |
c906108c | 4521 | char wrap_indent[80]; |
8b93c638 JM |
4522 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4523 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4524 | struct cleanup *bkpt_chain; |
c906108c | 4525 | |
0d381245 VP |
4526 | int header_of_multiple = 0; |
4527 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4528 | struct value_print_options opts; |
4529 | ||
4530 | get_user_print_options (&opts); | |
0d381245 VP |
4531 | |
4532 | gdb_assert (!loc || loc_number != 0); | |
4533 | /* See comment in print_one_breakpoint concerning | |
4534 | treatment of breakpoints with single disabled | |
4535 | location. */ | |
4536 | if (loc == NULL | |
4537 | && (b->loc != NULL | |
4538 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4539 | header_of_multiple = 1; | |
4540 | if (loc == NULL) | |
4541 | loc = b->loc; | |
4542 | ||
c4093a6a | 4543 | annotate_record (); |
3b31d625 | 4544 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4545 | |
4546 | /* 1 */ | |
4547 | annotate_field (0); | |
0d381245 VP |
4548 | if (part_of_multiple) |
4549 | { | |
4550 | char *formatted; | |
0c6773c1 | 4551 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4552 | ui_out_field_string (uiout, "number", formatted); |
4553 | xfree (formatted); | |
4554 | } | |
4555 | else | |
4556 | { | |
4557 | ui_out_field_int (uiout, "number", b->number); | |
4558 | } | |
c4093a6a JM |
4559 | |
4560 | /* 2 */ | |
4561 | annotate_field (1); | |
0d381245 VP |
4562 | if (part_of_multiple) |
4563 | ui_out_field_skip (uiout, "type"); | |
4564 | else | |
4565 | { | |
4566 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4567 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4568 | internal_error (__FILE__, __LINE__, | |
4569 | _("bptypes table does not describe type #%d."), | |
4570 | (int) b->type); | |
4571 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4572 | } | |
c4093a6a JM |
4573 | |
4574 | /* 3 */ | |
4575 | annotate_field (2); | |
0d381245 VP |
4576 | if (part_of_multiple) |
4577 | ui_out_field_skip (uiout, "disp"); | |
4578 | else | |
2cec12e5 | 4579 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4580 | |
c4093a6a JM |
4581 | |
4582 | /* 4 */ | |
4583 | annotate_field (3); | |
0d381245 | 4584 | if (part_of_multiple) |
54e52265 | 4585 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4586 | else |
54e52265 VP |
4587 | ui_out_field_fmt (uiout, "enabled", "%c", |
4588 | bpenables[(int) b->enable_state]); | |
4589 | ui_out_spaces (uiout, 2); | |
0d381245 | 4590 | |
c4093a6a JM |
4591 | |
4592 | /* 5 and 6 */ | |
4593 | strcpy (wrap_indent, " "); | |
79a45b7d | 4594 | if (opts.addressprint) |
75ac9d7b | 4595 | { |
a6d9a66e | 4596 | if (print_address_bits <= 32) |
75ac9d7b MS |
4597 | strcat (wrap_indent, " "); |
4598 | else | |
4599 | strcat (wrap_indent, " "); | |
4600 | } | |
c906108c | 4601 | |
3086aeae | 4602 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4603 | { |
4604 | /* Although the print_one can possibly print | |
4605 | all locations, calling it here is not likely | |
4606 | to get any nice result. So, make sure there's | |
4607 | just one location. */ | |
4608 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4609 | b->ops->print_one (b, last_loc); |
0d381245 | 4610 | } |
3086aeae DJ |
4611 | else |
4612 | switch (b->type) | |
4613 | { | |
4614 | case bp_none: | |
4615 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4616 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4617 | break; |
c906108c | 4618 | |
3086aeae DJ |
4619 | case bp_watchpoint: |
4620 | case bp_hardware_watchpoint: | |
4621 | case bp_read_watchpoint: | |
4622 | case bp_access_watchpoint: | |
4623 | /* Field 4, the address, is omitted (which makes the columns | |
4624 | not line up too nicely with the headers, but the effect | |
4625 | is relatively readable). */ | |
79a45b7d | 4626 | if (opts.addressprint) |
3086aeae DJ |
4627 | ui_out_field_skip (uiout, "addr"); |
4628 | annotate_field (5); | |
fa8a61dc | 4629 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4630 | break; |
4631 | ||
3086aeae DJ |
4632 | case bp_breakpoint: |
4633 | case bp_hardware_breakpoint: | |
4634 | case bp_until: | |
4635 | case bp_finish: | |
4636 | case bp_longjmp: | |
4637 | case bp_longjmp_resume: | |
4638 | case bp_step_resume: | |
3086aeae DJ |
4639 | case bp_watchpoint_scope: |
4640 | case bp_call_dummy: | |
aa7d318d | 4641 | case bp_std_terminate: |
3086aeae DJ |
4642 | case bp_shlib_event: |
4643 | case bp_thread_event: | |
4644 | case bp_overlay_event: | |
0fd8e87f | 4645 | case bp_longjmp_master: |
aa7d318d | 4646 | case bp_std_terminate_master: |
1042e4c0 | 4647 | case bp_tracepoint: |
7a697b8d | 4648 | case bp_fast_tracepoint: |
4efc6507 | 4649 | case bp_jit_event: |
79a45b7d | 4650 | if (opts.addressprint) |
3086aeae DJ |
4651 | { |
4652 | annotate_field (4); | |
54e52265 | 4653 | if (header_of_multiple) |
0d381245 | 4654 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4655 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4656 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4657 | else |
5af949e3 UW |
4658 | ui_out_field_core_addr (uiout, "addr", |
4659 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4660 | } |
4661 | annotate_field (5); | |
0d381245 VP |
4662 | if (!header_of_multiple) |
4663 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4664 | if (b->loc) | |
a6d9a66e | 4665 | *last_loc = b->loc; |
3086aeae DJ |
4666 | break; |
4667 | } | |
c906108c | 4668 | |
6c95b8df PA |
4669 | |
4670 | /* For backward compatibility, don't display inferiors unless there | |
4671 | are several. */ | |
4672 | if (loc != NULL | |
4673 | && !header_of_multiple | |
4674 | && (allflag | |
4675 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4676 | && (number_of_program_spaces () > 1 | |
4677 | || number_of_inferiors () > 1) | |
4678 | && loc->owner->type != bp_catchpoint))) | |
4679 | { | |
4680 | struct inferior *inf; | |
4681 | int first = 1; | |
4682 | ||
4683 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4684 | { | |
4685 | if (inf->pspace == loc->pspace) | |
4686 | { | |
4687 | if (first) | |
4688 | { | |
4689 | first = 0; | |
4690 | ui_out_text (uiout, " inf "); | |
4691 | } | |
4692 | else | |
4693 | ui_out_text (uiout, ", "); | |
4694 | ui_out_text (uiout, plongest (inf->num)); | |
4695 | } | |
4696 | } | |
4697 | } | |
4698 | ||
4a306c9a | 4699 | if (!part_of_multiple) |
c4093a6a | 4700 | { |
4a306c9a JB |
4701 | if (b->thread != -1) |
4702 | { | |
4703 | /* FIXME: This seems to be redundant and lost here; see the | |
4704 | "stop only in" line a little further down. */ | |
4705 | ui_out_text (uiout, " thread "); | |
4706 | ui_out_field_int (uiout, "thread", b->thread); | |
4707 | } | |
4708 | else if (b->task != 0) | |
4709 | { | |
4710 | ui_out_text (uiout, " task "); | |
4711 | ui_out_field_int (uiout, "task", b->task); | |
4712 | } | |
c4093a6a JM |
4713 | } |
4714 | ||
8b93c638 | 4715 | ui_out_text (uiout, "\n"); |
c4093a6a | 4716 | |
0d381245 | 4717 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4718 | { |
4719 | annotate_field (6); | |
8b93c638 | 4720 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4721 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4722 | the frame ID. */ | |
5af949e3 UW |
4723 | ui_out_field_core_addr (uiout, "frame", |
4724 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4725 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4726 | } |
4727 | ||
0d381245 | 4728 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4729 | { |
f7f9143b JB |
4730 | /* We do not print the condition for Ada exception catchpoints |
4731 | because the condition is an internal implementation detail | |
4732 | that we do not want to expose to the user. */ | |
c4093a6a | 4733 | annotate_field (7); |
d77f58be | 4734 | if (is_tracepoint (b)) |
1042e4c0 SS |
4735 | ui_out_text (uiout, "\ttrace only if "); |
4736 | else | |
4737 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4738 | ui_out_field_string (uiout, "cond", b->cond_string); |
4739 | ui_out_text (uiout, "\n"); | |
4740 | } | |
4741 | ||
0d381245 | 4742 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4743 | { |
4744 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4745 | ui_out_text (uiout, "\tstop only in thread "); |
4746 | ui_out_field_int (uiout, "thread", b->thread); | |
4747 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4748 | } |
4749 | ||
63c715c6 | 4750 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4751 | { |
4752 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4753 | if (ep_is_catchpoint (b)) |
4754 | ui_out_text (uiout, "\tcatchpoint"); | |
4755 | else | |
4756 | ui_out_text (uiout, "\tbreakpoint"); | |
4757 | ui_out_text (uiout, " already hit "); | |
4758 | ui_out_field_int (uiout, "times", b->hit_count); | |
4759 | if (b->hit_count == 1) | |
4760 | ui_out_text (uiout, " time\n"); | |
4761 | else | |
4762 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4763 | } |
4764 | ||
fb40c209 AC |
4765 | /* Output the count also if it is zero, but only if this is |
4766 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4767 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4768 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4769 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4770 | |
0d381245 | 4771 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4772 | { |
4773 | annotate_field (8); | |
8b93c638 JM |
4774 | ui_out_text (uiout, "\tignore next "); |
4775 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4776 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4777 | } |
059fb39f | 4778 | |
9add0f1b | 4779 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4780 | if (!part_of_multiple && l) |
c4093a6a | 4781 | { |
3b31d625 EZ |
4782 | struct cleanup *script_chain; |
4783 | ||
c4093a6a | 4784 | annotate_field (9); |
3b31d625 | 4785 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4786 | print_command_lines (uiout, l, 4); |
3b31d625 | 4787 | do_cleanups (script_chain); |
c4093a6a | 4788 | } |
d24317b4 | 4789 | |
1042e4c0 SS |
4790 | if (!part_of_multiple && b->pass_count) |
4791 | { | |
4792 | annotate_field (10); | |
4793 | ui_out_text (uiout, "\tpass count "); | |
4794 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4795 | ui_out_text (uiout, " \n"); | |
4796 | } | |
4797 | ||
d24317b4 VP |
4798 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4799 | { | |
4800 | if (b->addr_string) | |
4801 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4802 | else if (b->exp_string) | |
4803 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4804 | } | |
4805 | ||
3b31d625 | 4806 | do_cleanups (bkpt_chain); |
8b93c638 | 4807 | do_cleanups (old_chain); |
c4093a6a | 4808 | } |
c5aa993b | 4809 | |
0d381245 VP |
4810 | static void |
4811 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4812 | struct bp_location **last_loc, int print_address_bits, |
4813 | int allflag) | |
0d381245 | 4814 | { |
6c95b8df PA |
4815 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4816 | print_address_bits, allflag); | |
0d381245 VP |
4817 | |
4818 | /* If this breakpoint has custom print function, | |
4819 | it's already printed. Otherwise, print individual | |
4820 | locations, if any. */ | |
4821 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4822 | { | |
4823 | /* If breakpoint has a single location that is | |
4824 | disabled, we print it as if it had | |
4825 | several locations, since otherwise it's hard to | |
4826 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4827 | situation. |
4828 | Note that while hardware watchpoints have | |
4829 | several locations internally, that's no a property | |
4830 | exposed to user. */ | |
0d381245 | 4831 | if (b->loc |
a5606eee | 4832 | && !is_hardware_watchpoint (b) |
0d381245 | 4833 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4834 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4835 | { |
4836 | struct bp_location *loc; | |
4837 | int n = 1; | |
4838 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4839 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4840 | print_address_bits, allflag); |
0d381245 VP |
4841 | } |
4842 | } | |
4843 | } | |
4844 | ||
a6d9a66e UW |
4845 | static int |
4846 | breakpoint_address_bits (struct breakpoint *b) | |
4847 | { | |
4848 | int print_address_bits = 0; | |
4849 | struct bp_location *loc; | |
4850 | ||
4851 | for (loc = b->loc; loc; loc = loc->next) | |
4852 | { | |
c7437ca6 PA |
4853 | int addr_bit; |
4854 | ||
4855 | /* Software watchpoints that aren't watching memory don't have | |
4856 | an address to print. */ | |
4857 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4858 | continue; | |
4859 | ||
4860 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4861 | if (addr_bit > print_address_bits) |
4862 | print_address_bits = addr_bit; | |
4863 | } | |
4864 | ||
4865 | return print_address_bits; | |
4866 | } | |
0d381245 | 4867 | |
c4093a6a JM |
4868 | struct captured_breakpoint_query_args |
4869 | { | |
4870 | int bnum; | |
4871 | }; | |
c5aa993b | 4872 | |
c4093a6a | 4873 | static int |
2b65245e | 4874 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4875 | { |
4876 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4877 | struct breakpoint *b; |
a6d9a66e | 4878 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4879 | |
c4093a6a JM |
4880 | ALL_BREAKPOINTS (b) |
4881 | { | |
4882 | if (args->bnum == b->number) | |
c5aa993b | 4883 | { |
a6d9a66e | 4884 | int print_address_bits = breakpoint_address_bits (b); |
cc59ec59 | 4885 | |
6c95b8df | 4886 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4887 | return GDB_RC_OK; |
c5aa993b | 4888 | } |
c4093a6a JM |
4889 | } |
4890 | return GDB_RC_NONE; | |
4891 | } | |
c5aa993b | 4892 | |
c4093a6a | 4893 | enum gdb_rc |
ce43223b | 4894 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4895 | { |
4896 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 4897 | |
c4093a6a JM |
4898 | args.bnum = bnum; |
4899 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4900 | an error. */ | |
b0b13bb4 DJ |
4901 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4902 | error_message, RETURN_MASK_ALL) < 0) | |
4903 | return GDB_RC_FAIL; | |
4904 | else | |
4905 | return GDB_RC_OK; | |
c4093a6a | 4906 | } |
c5aa993b | 4907 | |
7f3b0473 AC |
4908 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4909 | catchpoints, et.al.). */ | |
4910 | ||
4911 | static int | |
4912 | user_settable_breakpoint (const struct breakpoint *b) | |
4913 | { | |
4914 | return (b->type == bp_breakpoint | |
ce78b96d | 4915 | || b->type == bp_catchpoint |
7f3b0473 | 4916 | || b->type == bp_hardware_breakpoint |
d77f58be | 4917 | || is_tracepoint (b) |
cc60f2e3 | 4918 | || is_watchpoint (b)); |
7f3b0473 AC |
4919 | } |
4920 | ||
4921 | /* Print information on user settable breakpoint (watchpoint, etc) | |
d77f58be SS |
4922 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
4923 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
4924 | FILTER is non-NULL, call it on each breakpoint and only include the | |
4925 | ones for which it returns non-zero. Return the total number of | |
4926 | breakpoints listed. */ | |
c906108c | 4927 | |
d77f58be SS |
4928 | static int |
4929 | breakpoint_1 (int bnum, int allflag, int (*filter) (const struct breakpoint *)) | |
c4093a6a | 4930 | { |
52f0bd74 | 4931 | struct breakpoint *b; |
a6d9a66e | 4932 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4933 | int nr_printable_breakpoints; |
3b31d625 | 4934 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4935 | struct value_print_options opts; |
a6d9a66e | 4936 | int print_address_bits = 0; |
c4093a6a | 4937 | |
79a45b7d TT |
4938 | get_user_print_options (&opts); |
4939 | ||
a6d9a66e UW |
4940 | /* Compute the number of rows in the table, as well as the |
4941 | size required for address fields. */ | |
7f3b0473 AC |
4942 | nr_printable_breakpoints = 0; |
4943 | ALL_BREAKPOINTS (b) | |
4944 | if (bnum == -1 | |
4945 | || bnum == b->number) | |
4946 | { | |
d77f58be SS |
4947 | /* If we have a filter, only list the breakpoints it accepts. */ |
4948 | if (filter && !filter (b)) | |
4949 | continue; | |
4950 | ||
7f3b0473 | 4951 | if (allflag || user_settable_breakpoint (b)) |
a6d9a66e UW |
4952 | { |
4953 | int addr_bit = breakpoint_address_bits (b); | |
4954 | if (addr_bit > print_address_bits) | |
4955 | print_address_bits = addr_bit; | |
4956 | ||
4957 | nr_printable_breakpoints++; | |
4958 | } | |
7f3b0473 AC |
4959 | } |
4960 | ||
79a45b7d | 4961 | if (opts.addressprint) |
3b31d625 EZ |
4962 | bkpttbl_chain |
4963 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4964 | "BreakpointTable"); | |
8b93c638 | 4965 | else |
3b31d625 EZ |
4966 | bkpttbl_chain |
4967 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4968 | "BreakpointTable"); | |
8b93c638 | 4969 | |
7f3b0473 | 4970 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4971 | annotate_breakpoints_headers (); |
4972 | if (nr_printable_breakpoints > 0) | |
4973 | annotate_field (0); | |
0d381245 | 4974 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4975 | if (nr_printable_breakpoints > 0) |
4976 | annotate_field (1); | |
4977 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4978 | if (nr_printable_breakpoints > 0) | |
4979 | annotate_field (2); | |
4980 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4981 | if (nr_printable_breakpoints > 0) | |
4982 | annotate_field (3); | |
54e52265 | 4983 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4984 | if (opts.addressprint) |
7f3b0473 | 4985 | { |
d7faa9e7 AC |
4986 | if (nr_printable_breakpoints > 0) |
4987 | annotate_field (4); | |
a6d9a66e | 4988 | if (print_address_bits <= 32) |
b25959ec | 4989 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4990 | else |
b25959ec | 4991 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4992 | } |
d7faa9e7 AC |
4993 | if (nr_printable_breakpoints > 0) |
4994 | annotate_field (5); | |
4995 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4996 | ui_out_table_body (uiout); | |
4997 | if (nr_printable_breakpoints > 0) | |
4998 | annotate_breakpoints_table (); | |
7f3b0473 | 4999 | |
c4093a6a | 5000 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5001 | { |
5002 | QUIT; | |
c4093a6a JM |
5003 | if (bnum == -1 |
5004 | || bnum == b->number) | |
5005 | { | |
d77f58be SS |
5006 | /* If we have a filter, only list the breakpoints it accepts. */ |
5007 | if (filter && !filter (b)) | |
5008 | continue; | |
5009 | ||
c4093a6a JM |
5010 | /* We only print out user settable breakpoints unless the |
5011 | allflag is set. */ | |
7f3b0473 | 5012 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 5013 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5014 | } |
bad56014 | 5015 | } |
c4093a6a | 5016 | |
3b31d625 | 5017 | do_cleanups (bkpttbl_chain); |
698384cd | 5018 | |
7f3b0473 | 5019 | if (nr_printable_breakpoints == 0) |
c906108c | 5020 | { |
d77f58be SS |
5021 | /* If there's a filter, let the caller decide how to report empty list. */ |
5022 | if (!filter) | |
5023 | { | |
5024 | if (bnum == -1) | |
5025 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5026 | else | |
5027 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
5028 | bnum); | |
5029 | } | |
c906108c SS |
5030 | } |
5031 | else | |
c4093a6a | 5032 | { |
a6d9a66e UW |
5033 | if (last_loc && !server_command) |
5034 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5035 | } |
c906108c | 5036 | |
c4093a6a JM |
5037 | /* FIXME? Should this be moved up so that it is only called when |
5038 | there have been breakpoints? */ | |
c906108c | 5039 | annotate_breakpoints_table_end (); |
d77f58be SS |
5040 | |
5041 | return nr_printable_breakpoints; | |
c906108c SS |
5042 | } |
5043 | ||
ad443146 SS |
5044 | /* Display the value of default-collect in a way that is generally |
5045 | compatible with the breakpoint list. */ | |
5046 | ||
5047 | static void | |
5048 | default_collect_info (void) | |
5049 | { | |
5050 | /* If it has no value (which is frequently the case), say nothing; a | |
5051 | message like "No default-collect." gets in user's face when it's | |
5052 | not wanted. */ | |
5053 | if (!*default_collect) | |
5054 | return; | |
5055 | ||
5056 | /* The following phrase lines up nicely with per-tracepoint collect | |
5057 | actions. */ | |
5058 | ui_out_text (uiout, "default collect "); | |
5059 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5060 | ui_out_text (uiout, " \n"); | |
5061 | } | |
5062 | ||
c906108c | 5063 | static void |
fba45db2 | 5064 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5065 | { |
5066 | int bnum = -1; | |
5067 | ||
5068 | if (bnum_exp) | |
bb518678 | 5069 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5070 | |
d77f58be | 5071 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5072 | |
5073 | default_collect_info (); | |
d77f58be SS |
5074 | } |
5075 | ||
5076 | static void | |
5077 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5078 | { | |
5079 | int wpnum = -1, num_printed; | |
5080 | ||
5081 | if (wpnum_exp) | |
5082 | wpnum = parse_and_eval_long (wpnum_exp); | |
5083 | ||
5084 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5085 | ||
5086 | if (num_printed == 0) | |
5087 | { | |
5088 | if (wpnum == -1) | |
5089 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5090 | else | |
5091 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5092 | } | |
c906108c SS |
5093 | } |
5094 | ||
7a292a7a | 5095 | static void |
fba45db2 | 5096 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5097 | { |
5098 | int bnum = -1; | |
5099 | ||
5100 | if (bnum_exp) | |
bb518678 | 5101 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5102 | |
d77f58be | 5103 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5104 | |
5105 | default_collect_info (); | |
c906108c SS |
5106 | } |
5107 | ||
0d381245 | 5108 | static int |
714835d5 | 5109 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5110 | struct program_space *pspace, |
714835d5 | 5111 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5112 | { |
5113 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5114 | |
0d381245 VP |
5115 | for (; bl; bl = bl->next) |
5116 | { | |
6c95b8df PA |
5117 | if (bl->pspace == pspace |
5118 | && bl->address == pc | |
0d381245 VP |
5119 | && (!overlay_debugging || bl->section == section)) |
5120 | return 1; | |
5121 | } | |
5122 | return 0; | |
5123 | } | |
5124 | ||
6c95b8df PA |
5125 | /* Print a message describing any breakpoints set at PC. This |
5126 | concerns with logical breakpoints, so we match program spaces, not | |
5127 | address spaces. */ | |
c906108c SS |
5128 | |
5129 | static void | |
6c95b8df PA |
5130 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5131 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5132 | struct obj_section *section, int thread) |
c906108c | 5133 | { |
52f0bd74 AC |
5134 | int others = 0; |
5135 | struct breakpoint *b; | |
c906108c SS |
5136 | |
5137 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5138 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5139 | if (others > 0) |
5140 | { | |
a3f17187 AC |
5141 | if (others == 1) |
5142 | printf_filtered (_("Note: breakpoint ")); | |
5143 | else /* if (others == ???) */ | |
5144 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5145 | ALL_BREAKPOINTS (b) |
6c95b8df | 5146 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5147 | { |
5148 | others--; | |
5149 | printf_filtered ("%d", b->number); | |
5150 | if (b->thread == -1 && thread != -1) | |
5151 | printf_filtered (" (all threads)"); | |
5152 | else if (b->thread != -1) | |
5153 | printf_filtered (" (thread %d)", b->thread); | |
5154 | printf_filtered ("%s%s ", | |
059fb39f | 5155 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5156 | || b->enable_state == bp_call_disabled |
5157 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5158 | ? " (disabled)" |
5159 | : b->enable_state == bp_permanent | |
5160 | ? " (permanent)" | |
5161 | : ""), | |
5162 | (others > 1) ? "," | |
5163 | : ((others == 1) ? " and" : "")); | |
5164 | } | |
a3f17187 | 5165 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5166 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5167 | printf_filtered (".\n"); |
5168 | } | |
5169 | } | |
5170 | \f | |
5171 | /* Set the default place to put a breakpoint | |
5172 | for the `break' command with no arguments. */ | |
5173 | ||
5174 | void | |
6c95b8df PA |
5175 | set_default_breakpoint (int valid, struct program_space *pspace, |
5176 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5177 | int line) |
c906108c SS |
5178 | { |
5179 | default_breakpoint_valid = valid; | |
6c95b8df | 5180 | default_breakpoint_pspace = pspace; |
c906108c SS |
5181 | default_breakpoint_address = addr; |
5182 | default_breakpoint_symtab = symtab; | |
5183 | default_breakpoint_line = line; | |
5184 | } | |
5185 | ||
e4f237da KB |
5186 | /* Return true iff it is meaningful to use the address member of |
5187 | BPT. For some breakpoint types, the address member is irrelevant | |
5188 | and it makes no sense to attempt to compare it to other addresses | |
5189 | (or use it for any other purpose either). | |
5190 | ||
5191 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
5192 | have a zero valued address and we don't want to mark breakpoints of any of |
5193 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
5194 | |
5195 | bp_watchpoint | |
2d134ed3 PA |
5196 | bp_catchpoint |
5197 | ||
5198 | */ | |
e4f237da KB |
5199 | |
5200 | static int | |
5201 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5202 | { | |
5203 | enum bptype type = bpt->type; | |
5204 | ||
2d134ed3 PA |
5205 | return (type != bp_watchpoint && type != bp_catchpoint); |
5206 | } | |
5207 | ||
5208 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5209 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5210 | ||
5211 | static int | |
5212 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5213 | { | |
85d721b8 PA |
5214 | /* Note that this checks the owner's type, not the location's. In |
5215 | case the target does not support read watchpoints, but does | |
5216 | support access watchpoints, we'll have bp_read_watchpoint | |
5217 | watchpoints with hw_access locations. Those should be considered | |
5218 | duplicates of hw_read locations. The hw_read locations will | |
5219 | become hw_access locations later. */ | |
2d134ed3 PA |
5220 | return (loc1->owner->type == loc2->owner->type |
5221 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5222 | && loc1->address == loc2->address | |
5223 | && loc1->length == loc2->length); | |
e4f237da KB |
5224 | } |
5225 | ||
6c95b8df PA |
5226 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5227 | same breakpoint location. In most targets, this can only be true | |
5228 | if ASPACE1 matches ASPACE2. On targets that have global | |
5229 | breakpoints, the address space doesn't really matter. */ | |
5230 | ||
5231 | static int | |
5232 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5233 | struct address_space *aspace2, CORE_ADDR addr2) | |
5234 | { | |
5235 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5236 | || aspace1 == aspace2) | |
5237 | && addr1 == addr2); | |
5238 | } | |
5239 | ||
2d134ed3 PA |
5240 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5241 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5242 | represent the same location. */ | |
5243 | ||
5244 | static int | |
5245 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5246 | { | |
5247 | int hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5248 | int hw_point2 = is_hardware_watchpoint (loc2->owner); | |
5249 | ||
5250 | if (hw_point1 != hw_point2) | |
5251 | return 0; | |
5252 | else if (hw_point1) | |
5253 | return watchpoint_locations_match (loc1, loc2); | |
5254 | else | |
5255 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5256 | loc2->pspace->aspace, loc2->address); | |
5257 | } | |
5258 | ||
76897487 KB |
5259 | static void |
5260 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5261 | int bnum, int have_bnum) | |
5262 | { | |
5263 | char astr1[40]; | |
5264 | char astr2[40]; | |
5265 | ||
bb599908 PH |
5266 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5267 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5268 | if (have_bnum) |
8a3fe4f8 | 5269 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5270 | bnum, astr1, astr2); |
5271 | else | |
8a3fe4f8 | 5272 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5273 | } |
5274 | ||
5275 | /* Adjust a breakpoint's address to account for architectural constraints | |
5276 | on breakpoint placement. Return the adjusted address. Note: Very | |
5277 | few targets require this kind of adjustment. For most targets, | |
5278 | this function is simply the identity function. */ | |
5279 | ||
5280 | static CORE_ADDR | |
a6d9a66e UW |
5281 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5282 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5283 | { |
a6d9a66e | 5284 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5285 | { |
5286 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5287 | return bpaddr; | |
5288 | } | |
88f7da05 KB |
5289 | else if (bptype == bp_watchpoint |
5290 | || bptype == bp_hardware_watchpoint | |
5291 | || bptype == bp_read_watchpoint | |
5292 | || bptype == bp_access_watchpoint | |
fe798b75 | 5293 | || bptype == bp_catchpoint) |
88f7da05 KB |
5294 | { |
5295 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5296 | have their addresses modified. */ | |
5297 | return bpaddr; | |
5298 | } | |
76897487 KB |
5299 | else |
5300 | { | |
5301 | CORE_ADDR adjusted_bpaddr; | |
5302 | ||
5303 | /* Some targets have architectural constraints on the placement | |
5304 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5305 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5306 | |
5307 | /* An adjusted breakpoint address can significantly alter | |
5308 | a user's expectations. Print a warning if an adjustment | |
5309 | is required. */ | |
5310 | if (adjusted_bpaddr != bpaddr) | |
5311 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5312 | ||
5313 | return adjusted_bpaddr; | |
5314 | } | |
5315 | } | |
5316 | ||
7cc221ef DJ |
5317 | /* Allocate a struct bp_location. */ |
5318 | ||
26bb91f3 | 5319 | static struct bp_location * |
39d61571 | 5320 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5321 | { |
afe38095 | 5322 | struct bp_location *loc; |
7cc221ef DJ |
5323 | |
5324 | loc = xmalloc (sizeof (struct bp_location)); | |
5325 | memset (loc, 0, sizeof (*loc)); | |
5326 | ||
e049a4b5 | 5327 | loc->owner = bpt; |
511a6cd4 | 5328 | loc->cond = NULL; |
0d381245 VP |
5329 | loc->shlib_disabled = 0; |
5330 | loc->enabled = 1; | |
e049a4b5 | 5331 | |
39d61571 | 5332 | switch (bpt->type) |
e049a4b5 DJ |
5333 | { |
5334 | case bp_breakpoint: | |
5335 | case bp_until: | |
5336 | case bp_finish: | |
5337 | case bp_longjmp: | |
5338 | case bp_longjmp_resume: | |
5339 | case bp_step_resume: | |
e049a4b5 DJ |
5340 | case bp_watchpoint_scope: |
5341 | case bp_call_dummy: | |
aa7d318d | 5342 | case bp_std_terminate: |
e049a4b5 DJ |
5343 | case bp_shlib_event: |
5344 | case bp_thread_event: | |
5345 | case bp_overlay_event: | |
4efc6507 | 5346 | case bp_jit_event: |
0fd8e87f | 5347 | case bp_longjmp_master: |
aa7d318d | 5348 | case bp_std_terminate_master: |
e049a4b5 DJ |
5349 | loc->loc_type = bp_loc_software_breakpoint; |
5350 | break; | |
5351 | case bp_hardware_breakpoint: | |
5352 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5353 | break; | |
5354 | case bp_hardware_watchpoint: | |
5355 | case bp_read_watchpoint: | |
5356 | case bp_access_watchpoint: | |
5357 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5358 | break; | |
5359 | case bp_watchpoint: | |
ce78b96d | 5360 | case bp_catchpoint: |
15c3d785 PA |
5361 | case bp_tracepoint: |
5362 | case bp_fast_tracepoint: | |
e049a4b5 DJ |
5363 | loc->loc_type = bp_loc_other; |
5364 | break; | |
5365 | default: | |
e2e0b3e5 | 5366 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5367 | } |
5368 | ||
7cc221ef DJ |
5369 | return loc; |
5370 | } | |
5371 | ||
fe3f5fa8 VP |
5372 | static void free_bp_location (struct bp_location *loc) |
5373 | { | |
5374 | if (loc->cond) | |
5375 | xfree (loc->cond); | |
74960c60 VP |
5376 | |
5377 | if (loc->function_name) | |
5378 | xfree (loc->function_name); | |
5379 | ||
fe3f5fa8 VP |
5380 | xfree (loc); |
5381 | } | |
5382 | ||
0d381245 VP |
5383 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
5384 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 5385 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 5386 | |
c40e75cd | 5387 | static struct breakpoint * |
a6d9a66e UW |
5388 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5389 | enum bptype bptype) | |
c906108c | 5390 | { |
52f0bd74 | 5391 | struct breakpoint *b, *b1; |
c906108c SS |
5392 | |
5393 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5394 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5395 | |
4d28f7a8 | 5396 | b->type = bptype; |
a6d9a66e | 5397 | b->gdbarch = gdbarch; |
c906108c SS |
5398 | b->language = current_language->la_language; |
5399 | b->input_radix = input_radix; | |
5400 | b->thread = -1; | |
b5de0fa7 | 5401 | b->enable_state = bp_enabled; |
c906108c SS |
5402 | b->next = 0; |
5403 | b->silent = 0; | |
5404 | b->ignore_count = 0; | |
5405 | b->commands = NULL; | |
818dd999 | 5406 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5407 | b->forked_inferior_pid = null_ptid; |
c906108c | 5408 | b->exec_pathname = NULL; |
a96d9b2e | 5409 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5410 | b->ops = NULL; |
0d381245 | 5411 | b->condition_not_parsed = 0; |
c906108c SS |
5412 | |
5413 | /* Add this breakpoint to the end of the chain | |
5414 | so that a list of breakpoints will come out in order | |
5415 | of increasing numbers. */ | |
5416 | ||
5417 | b1 = breakpoint_chain; | |
5418 | if (b1 == 0) | |
5419 | breakpoint_chain = b; | |
5420 | else | |
5421 | { | |
5422 | while (b1->next) | |
5423 | b1 = b1->next; | |
5424 | b1->next = b; | |
5425 | } | |
0d381245 VP |
5426 | return b; |
5427 | } | |
5428 | ||
5429 | /* Initialize loc->function_name. */ | |
5430 | static void | |
5431 | set_breakpoint_location_function (struct bp_location *loc) | |
5432 | { | |
5433 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 | 5434 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5435 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5436 | { |
5437 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5438 | NULL, NULL); | |
5439 | if (loc->function_name) | |
5440 | loc->function_name = xstrdup (loc->function_name); | |
5441 | } | |
5442 | } | |
5443 | ||
a6d9a66e UW |
5444 | /* Attempt to determine architecture of location identified by SAL. */ |
5445 | static struct gdbarch * | |
5446 | get_sal_arch (struct symtab_and_line sal) | |
5447 | { | |
5448 | if (sal.section) | |
5449 | return get_objfile_arch (sal.section->objfile); | |
5450 | if (sal.symtab) | |
5451 | return get_objfile_arch (sal.symtab->objfile); | |
5452 | ||
5453 | return NULL; | |
5454 | } | |
5455 | ||
0d381245 VP |
5456 | /* set_raw_breakpoint is a low level routine for allocating and |
5457 | partially initializing a breakpoint of type BPTYPE. The newly | |
5458 | created breakpoint's address, section, source file name, and line | |
5459 | number are provided by SAL. The newly created and partially | |
5460 | initialized breakpoint is added to the breakpoint chain and | |
5461 | is also returned as the value of this function. | |
5462 | ||
5463 | It is expected that the caller will complete the initialization of | |
5464 | the newly created breakpoint struct as well as output any status | |
5465 | information regarding the creation of a new breakpoint. In | |
5466 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5467 | number! Care should be taken to not allow an error to occur | |
5468 | prior to completing the initialization of the breakpoint. If this | |
5469 | should happen, a bogus breakpoint will be left on the chain. */ | |
5470 | ||
63c252f8 | 5471 | struct breakpoint * |
a6d9a66e UW |
5472 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5473 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5474 | { |
a6d9a66e | 5475 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5476 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5477 | struct gdbarch *loc_gdbarch; |
5478 | ||
5479 | loc_gdbarch = get_sal_arch (sal); | |
5480 | if (!loc_gdbarch) | |
5481 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5482 | |
6c95b8df PA |
5483 | if (bptype != bp_catchpoint) |
5484 | gdb_assert (sal.pspace != NULL); | |
5485 | ||
0d381245 VP |
5486 | /* Adjust the breakpoint's address prior to allocating a location. |
5487 | Once we call allocate_bp_location(), that mostly uninitialized | |
5488 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5489 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5490 | not want its scan of the location chain to find a breakpoint and |
5491 | location that's only been partially initialized. */ | |
a6d9a66e | 5492 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5493 | |
39d61571 | 5494 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5495 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5496 | b->loc->requested_address = sal.pc; |
5497 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5498 | b->loc->pspace = sal.pspace; |
5499 | ||
5500 | /* Store the program space that was used to set the breakpoint, for | |
5501 | breakpoint resetting. */ | |
5502 | b->pspace = sal.pspace; | |
0d381245 VP |
5503 | |
5504 | if (sal.symtab == NULL) | |
5505 | b->source_file = NULL; | |
5506 | else | |
1b36a34b | 5507 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5508 | b->loc->section = sal.section; |
5509 | b->line_number = sal.line; | |
5510 | ||
5511 | set_breakpoint_location_function (b->loc); | |
c906108c | 5512 | |
c906108c SS |
5513 | breakpoints_changed (); |
5514 | ||
5515 | return b; | |
5516 | } | |
5517 | ||
c2c6d25f JM |
5518 | |
5519 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5520 | instruction, hard-wired into the inferior's code. */ | |
5521 | void | |
5522 | make_breakpoint_permanent (struct breakpoint *b) | |
5523 | { | |
0d381245 | 5524 | struct bp_location *bl; |
cc59ec59 | 5525 | |
b5de0fa7 | 5526 | b->enable_state = bp_permanent; |
c2c6d25f | 5527 | |
0d381245 VP |
5528 | /* By definition, permanent breakpoints are already present in the code. |
5529 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5530 | is called in just one place, so it's hard to say if it's reasonable | |
5531 | to have permanent breakpoint with multiple locations or not, | |
5532 | but it's easy to implmement. */ | |
5533 | for (bl = b->loc; bl; bl = bl->next) | |
5534 | bl->inserted = 1; | |
c2c6d25f JM |
5535 | } |
5536 | ||
53a5351d | 5537 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5538 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5539 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5540 | ||
5541 | void | |
0fd8e87f | 5542 | set_longjmp_breakpoint (int thread) |
c906108c | 5543 | { |
0fd8e87f UW |
5544 | struct breakpoint *b, *temp; |
5545 | ||
5546 | /* To avoid having to rescan all objfile symbols at every step, | |
5547 | we maintain a list of continually-inserted but always disabled | |
5548 | longjmp "master" breakpoints. Here, we simply create momentary | |
5549 | clones of those and enable them for the requested thread. */ | |
5550 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5551 | if (b->pspace == current_program_space |
5552 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5553 | { |
5554 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5555 | |
0fd8e87f UW |
5556 | clone->type = bp_longjmp; |
5557 | clone->thread = thread; | |
5558 | } | |
c906108c SS |
5559 | } |
5560 | ||
611c83ae | 5561 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5562 | void |
611c83ae | 5563 | delete_longjmp_breakpoint (int thread) |
c906108c | 5564 | { |
611c83ae | 5565 | struct breakpoint *b, *temp; |
c906108c | 5566 | |
611c83ae PA |
5567 | ALL_BREAKPOINTS_SAFE (b, temp) |
5568 | if (b->type == bp_longjmp) | |
5569 | { | |
5570 | if (b->thread == thread) | |
5571 | delete_breakpoint (b); | |
5572 | } | |
c906108c SS |
5573 | } |
5574 | ||
1900040c MS |
5575 | void |
5576 | enable_overlay_breakpoints (void) | |
5577 | { | |
52f0bd74 | 5578 | struct breakpoint *b; |
1900040c MS |
5579 | |
5580 | ALL_BREAKPOINTS (b) | |
5581 | if (b->type == bp_overlay_event) | |
5582 | { | |
5583 | b->enable_state = bp_enabled; | |
b60e7edf | 5584 | update_global_location_list (1); |
c02f5703 | 5585 | overlay_events_enabled = 1; |
1900040c MS |
5586 | } |
5587 | } | |
5588 | ||
5589 | void | |
5590 | disable_overlay_breakpoints (void) | |
5591 | { | |
52f0bd74 | 5592 | struct breakpoint *b; |
1900040c MS |
5593 | |
5594 | ALL_BREAKPOINTS (b) | |
5595 | if (b->type == bp_overlay_event) | |
5596 | { | |
5597 | b->enable_state = bp_disabled; | |
b60e7edf | 5598 | update_global_location_list (0); |
c02f5703 | 5599 | overlay_events_enabled = 0; |
1900040c MS |
5600 | } |
5601 | } | |
5602 | ||
aa7d318d TT |
5603 | /* Set an active std::terminate breakpoint for each std::terminate |
5604 | master breakpoint. */ | |
5605 | void | |
5606 | set_std_terminate_breakpoint (void) | |
5607 | { | |
5608 | struct breakpoint *b, *temp; | |
5609 | ||
5610 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5611 | if (b->pspace == current_program_space | |
5612 | && b->type == bp_std_terminate_master) | |
5613 | { | |
5614 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5615 | clone->type = bp_std_terminate; | |
5616 | } | |
5617 | } | |
5618 | ||
5619 | /* Delete all the std::terminate breakpoints. */ | |
5620 | void | |
5621 | delete_std_terminate_breakpoint (void) | |
5622 | { | |
5623 | struct breakpoint *b, *temp; | |
5624 | ||
5625 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5626 | if (b->type == bp_std_terminate) | |
5627 | delete_breakpoint (b); | |
5628 | } | |
5629 | ||
c4093a6a | 5630 | struct breakpoint * |
a6d9a66e | 5631 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5632 | { |
5633 | struct breakpoint *b; | |
c4093a6a | 5634 | |
a6d9a66e | 5635 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5636 | |
b5de0fa7 | 5637 | b->enable_state = bp_enabled; |
c4093a6a | 5638 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5639 | b->addr_string |
5640 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5641 | |
b60e7edf | 5642 | update_global_location_list_nothrow (1); |
74960c60 | 5643 | |
c4093a6a JM |
5644 | return b; |
5645 | } | |
5646 | ||
5647 | void | |
5648 | remove_thread_event_breakpoints (void) | |
5649 | { | |
5650 | struct breakpoint *b, *temp; | |
5651 | ||
5652 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5653 | if (b->type == bp_thread_event |
5654 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5655 | delete_breakpoint (b); |
5656 | } | |
5657 | ||
0101ce28 JJ |
5658 | struct captured_parse_breakpoint_args |
5659 | { | |
5660 | char **arg_p; | |
5661 | struct symtabs_and_lines *sals_p; | |
5662 | char ***addr_string_p; | |
5663 | int *not_found_ptr; | |
5664 | }; | |
5665 | ||
5666 | struct lang_and_radix | |
5667 | { | |
5668 | enum language lang; | |
5669 | int radix; | |
5670 | }; | |
5671 | ||
4efc6507 DE |
5672 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5673 | ||
5674 | struct breakpoint * | |
5675 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5676 | { | |
5677 | struct breakpoint *b; | |
5678 | ||
5679 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5680 | update_global_location_list_nothrow (1); | |
5681 | return b; | |
5682 | } | |
0101ce28 | 5683 | |
cae688ec JJ |
5684 | void |
5685 | remove_solib_event_breakpoints (void) | |
5686 | { | |
5687 | struct breakpoint *b, *temp; | |
5688 | ||
5689 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5690 | if (b->type == bp_shlib_event |
5691 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5692 | delete_breakpoint (b); |
5693 | } | |
5694 | ||
5695 | struct breakpoint * | |
a6d9a66e | 5696 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5697 | { |
5698 | struct breakpoint *b; | |
5699 | ||
a6d9a66e | 5700 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5701 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5702 | return b; |
5703 | } | |
5704 | ||
5705 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5706 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5707 | ||
5708 | void | |
cb851954 | 5709 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5710 | { |
876fa593 | 5711 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5712 | |
876fa593 | 5713 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5714 | { |
0d381245 VP |
5715 | struct breakpoint *b = loc->owner; |
5716 | /* We apply the check to all breakpoints, including disabled | |
5717 | for those with loc->duplicate set. This is so that when breakpoint | |
5718 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5719 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5720 | to insert those breakpoints and fail. */ | |
1042e4c0 | 5721 | if (((b->type == bp_breakpoint) |
508ccb1f | 5722 | || (b->type == bp_jit_event) |
1042e4c0 | 5723 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5724 | || (is_tracepoint (b))) |
6c95b8df | 5725 | && loc->pspace == current_program_space |
0d381245 | 5726 | && !loc->shlib_disabled |
a77053c2 | 5727 | #ifdef PC_SOLIB |
0d381245 | 5728 | && PC_SOLIB (loc->address) |
a77053c2 | 5729 | #else |
6c95b8df | 5730 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5731 | #endif |
5732 | ) | |
0d381245 VP |
5733 | { |
5734 | loc->shlib_disabled = 1; | |
5735 | } | |
cae688ec JJ |
5736 | } |
5737 | } | |
5738 | ||
84acb35a JJ |
5739 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5740 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5741 | ||
75149521 | 5742 | static void |
84acb35a JJ |
5743 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5744 | { | |
876fa593 | 5745 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5746 | int disabled_shlib_breaks = 0; |
5747 | ||
c86cf029 VP |
5748 | /* SunOS a.out shared libraries are always mapped, so do not |
5749 | disable breakpoints; they will only be reported as unloaded | |
5750 | through clear_solib when GDB discards its shared library | |
5751 | list. See clear_solib for more information. */ | |
5752 | if (exec_bfd != NULL | |
5753 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5754 | return; | |
5755 | ||
876fa593 | 5756 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5757 | { |
0d381245 | 5758 | struct breakpoint *b = loc->owner; |
cc59ec59 | 5759 | |
0d381245 VP |
5760 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
5761 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5762 | && solib->pspace == loc->pspace |
e2dd7057 | 5763 | && !loc->shlib_disabled |
508ccb1f TT |
5764 | && (b->type == bp_breakpoint |
5765 | || b->type == bp_jit_event | |
5766 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5767 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5768 | { |
e2dd7057 PP |
5769 | loc->shlib_disabled = 1; |
5770 | /* At this point, we cannot rely on remove_breakpoint | |
5771 | succeeding so we must mark the breakpoint as not inserted | |
5772 | to prevent future errors occurring in remove_breakpoints. */ | |
5773 | loc->inserted = 0; | |
5774 | if (!disabled_shlib_breaks) | |
5775 | { | |
5776 | target_terminal_ours_for_output (); | |
5777 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5778 | solib->so_name); | |
84acb35a | 5779 | } |
e2dd7057 | 5780 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5781 | } |
5782 | } | |
84acb35a JJ |
5783 | } |
5784 | ||
ce78b96d JB |
5785 | /* FORK & VFORK catchpoints. */ |
5786 | ||
5787 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5788 | ||
c906108c | 5789 | static void |
ce78b96d JB |
5790 | insert_catch_fork (struct breakpoint *b) |
5791 | { | |
5792 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5793 | } | |
5794 | ||
5795 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5796 | ||
5797 | static int | |
5798 | remove_catch_fork (struct breakpoint *b) | |
5799 | { | |
5800 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5801 | } | |
5802 | ||
5803 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5804 | catchpoints. */ | |
5805 | ||
5806 | static int | |
5807 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5808 | { | |
5809 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5810 | } | |
5811 | ||
5812 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5813 | ||
5814 | static enum print_stop_action | |
5815 | print_it_catch_fork (struct breakpoint *b) | |
5816 | { | |
5817 | annotate_catchpoint (b->number); | |
5818 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5819 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5820 | return PRINT_SRC_AND_LOC; | |
5821 | } | |
5822 | ||
5823 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5824 | ||
5825 | static void | |
a6d9a66e | 5826 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5827 | { |
79a45b7d TT |
5828 | struct value_print_options opts; |
5829 | ||
5830 | get_user_print_options (&opts); | |
5831 | ||
ce78b96d JB |
5832 | /* Field 4, the address, is omitted (which makes the columns |
5833 | not line up too nicely with the headers, but the effect | |
5834 | is relatively readable). */ | |
79a45b7d | 5835 | if (opts.addressprint) |
ce78b96d JB |
5836 | ui_out_field_skip (uiout, "addr"); |
5837 | annotate_field (5); | |
5838 | ui_out_text (uiout, "fork"); | |
5839 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5840 | { | |
5841 | ui_out_text (uiout, ", process "); | |
5842 | ui_out_field_int (uiout, "what", | |
5843 | ptid_get_pid (b->forked_inferior_pid)); | |
5844 | ui_out_spaces (uiout, 1); | |
5845 | } | |
5846 | } | |
5847 | ||
5848 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5849 | catchpoints. */ | |
5850 | ||
5851 | static void | |
5852 | print_mention_catch_fork (struct breakpoint *b) | |
5853 | { | |
5854 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5855 | } | |
5856 | ||
6149aea9 PA |
5857 | /* Implement the "print_recreate" breakpoint_ops method for fork |
5858 | catchpoints. */ | |
5859 | ||
5860 | static void | |
5861 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
5862 | { | |
5863 | fprintf_unfiltered (fp, "catch fork"); | |
5864 | } | |
5865 | ||
ce78b96d JB |
5866 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
5867 | ||
5868 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5869 | { | |
5870 | insert_catch_fork, | |
5871 | remove_catch_fork, | |
5872 | breakpoint_hit_catch_fork, | |
5873 | print_it_catch_fork, | |
5874 | print_one_catch_fork, | |
6149aea9 PA |
5875 | print_mention_catch_fork, |
5876 | print_recreate_catch_fork | |
ce78b96d JB |
5877 | }; |
5878 | ||
5879 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5880 | ||
5881 | static void | |
5882 | insert_catch_vfork (struct breakpoint *b) | |
5883 | { | |
5884 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5885 | } | |
5886 | ||
5887 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5888 | ||
5889 | static int | |
5890 | remove_catch_vfork (struct breakpoint *b) | |
5891 | { | |
5892 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5893 | } | |
5894 | ||
5895 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5896 | catchpoints. */ | |
5897 | ||
5898 | static int | |
5899 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5900 | { | |
5901 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5902 | } | |
5903 | ||
5904 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5905 | ||
5906 | static enum print_stop_action | |
5907 | print_it_catch_vfork (struct breakpoint *b) | |
5908 | { | |
5909 | annotate_catchpoint (b->number); | |
5910 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5911 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5912 | return PRINT_SRC_AND_LOC; | |
5913 | } | |
5914 | ||
5915 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5916 | ||
5917 | static void | |
a6d9a66e | 5918 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5919 | { |
79a45b7d TT |
5920 | struct value_print_options opts; |
5921 | ||
5922 | get_user_print_options (&opts); | |
ce78b96d JB |
5923 | /* Field 4, the address, is omitted (which makes the columns |
5924 | not line up too nicely with the headers, but the effect | |
5925 | is relatively readable). */ | |
79a45b7d | 5926 | if (opts.addressprint) |
ce78b96d JB |
5927 | ui_out_field_skip (uiout, "addr"); |
5928 | annotate_field (5); | |
5929 | ui_out_text (uiout, "vfork"); | |
5930 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5931 | { | |
5932 | ui_out_text (uiout, ", process "); | |
5933 | ui_out_field_int (uiout, "what", | |
5934 | ptid_get_pid (b->forked_inferior_pid)); | |
5935 | ui_out_spaces (uiout, 1); | |
5936 | } | |
5937 | } | |
5938 | ||
5939 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
5940 | catchpoints. */ | |
5941 | ||
5942 | static void | |
5943 | print_mention_catch_vfork (struct breakpoint *b) | |
5944 | { | |
5945 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
5946 | } | |
5947 | ||
6149aea9 PA |
5948 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
5949 | catchpoints. */ | |
5950 | ||
5951 | static void | |
5952 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
5953 | { | |
5954 | fprintf_unfiltered (fp, "catch vfork"); | |
5955 | } | |
5956 | ||
ce78b96d JB |
5957 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
5958 | ||
5959 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
5960 | { | |
5961 | insert_catch_vfork, | |
5962 | remove_catch_vfork, | |
5963 | breakpoint_hit_catch_vfork, | |
5964 | print_it_catch_vfork, | |
5965 | print_one_catch_vfork, | |
6149aea9 PA |
5966 | print_mention_catch_vfork, |
5967 | print_recreate_catch_vfork | |
ce78b96d JB |
5968 | }; |
5969 | ||
a96d9b2e SDJ |
5970 | /* Implement the "insert" breakpoint_ops method for syscall |
5971 | catchpoints. */ | |
5972 | ||
5973 | static void | |
5974 | insert_catch_syscall (struct breakpoint *b) | |
5975 | { | |
5976 | struct inferior *inf = current_inferior (); | |
5977 | ||
5978 | ++inf->total_syscalls_count; | |
5979 | if (!b->syscalls_to_be_caught) | |
5980 | ++inf->any_syscall_count; | |
5981 | else | |
5982 | { | |
5983 | int i, iter; | |
cc59ec59 | 5984 | |
a96d9b2e SDJ |
5985 | for (i = 0; |
5986 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5987 | i++) | |
5988 | { | |
5989 | int elem; | |
cc59ec59 | 5990 | |
a96d9b2e SDJ |
5991 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
5992 | { | |
5993 | int old_size = VEC_length (int, inf->syscalls_counts); | |
5994 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
5995 | uintptr_t vec_addr; | |
5996 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
5997 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
5998 | vec_addr_offset; | |
5999 | memset ((void *) vec_addr, 0, | |
6000 | (iter + 1 - old_size) * sizeof (int)); | |
6001 | } | |
6002 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6003 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6004 | } | |
6005 | } | |
6006 | ||
6007 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6008 | inf->total_syscalls_count != 0, | |
6009 | inf->any_syscall_count, | |
6010 | VEC_length (int, inf->syscalls_counts), | |
6011 | VEC_address (int, inf->syscalls_counts)); | |
6012 | } | |
6013 | ||
6014 | /* Implement the "remove" breakpoint_ops method for syscall | |
6015 | catchpoints. */ | |
6016 | ||
6017 | static int | |
6018 | remove_catch_syscall (struct breakpoint *b) | |
6019 | { | |
6020 | struct inferior *inf = current_inferior (); | |
6021 | ||
6022 | --inf->total_syscalls_count; | |
6023 | if (!b->syscalls_to_be_caught) | |
6024 | --inf->any_syscall_count; | |
6025 | else | |
6026 | { | |
6027 | int i, iter; | |
cc59ec59 | 6028 | |
a96d9b2e SDJ |
6029 | for (i = 0; |
6030 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6031 | i++) | |
6032 | { | |
6033 | int elem; | |
6034 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6035 | /* Shouldn't happen. */ | |
6036 | continue; | |
6037 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6038 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6039 | } | |
6040 | } | |
6041 | ||
6042 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6043 | inf->total_syscalls_count != 0, | |
6044 | inf->any_syscall_count, | |
6045 | VEC_length (int, inf->syscalls_counts), | |
6046 | VEC_address (int, inf->syscalls_counts)); | |
6047 | } | |
6048 | ||
6049 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6050 | catchpoints. */ | |
6051 | ||
6052 | static int | |
6053 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6054 | { | |
6055 | /* We must check if we are catching specific syscalls in this breakpoint. | |
6056 | If we are, then we must guarantee that the called syscall is the same | |
6057 | syscall we are catching. */ | |
6058 | int syscall_number = 0; | |
6059 | ||
6060 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6061 | return 0; | |
6062 | ||
6063 | /* Now, checking if the syscall is the same. */ | |
6064 | if (b->syscalls_to_be_caught) | |
6065 | { | |
6066 | int i, iter; | |
cc59ec59 | 6067 | |
a96d9b2e SDJ |
6068 | for (i = 0; |
6069 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6070 | i++) | |
6071 | if (syscall_number == iter) | |
6072 | break; | |
6073 | /* Not the same. */ | |
6074 | if (!iter) | |
6075 | return 0; | |
6076 | } | |
6077 | ||
6078 | return 1; | |
6079 | } | |
6080 | ||
6081 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6082 | catchpoints. */ | |
6083 | ||
6084 | static enum print_stop_action | |
6085 | print_it_catch_syscall (struct breakpoint *b) | |
6086 | { | |
6087 | /* These are needed because we want to know in which state a | |
6088 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6089 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6090 | must print "called syscall" or "returned from syscall". */ | |
6091 | ptid_t ptid; | |
6092 | struct target_waitstatus last; | |
6093 | struct syscall s; | |
6094 | struct cleanup *old_chain; | |
6095 | char *syscall_id; | |
6096 | ||
6097 | get_last_target_status (&ptid, &last); | |
6098 | ||
6099 | get_syscall_by_number (last.value.syscall_number, &s); | |
6100 | ||
6101 | annotate_catchpoint (b->number); | |
6102 | ||
6103 | if (s.name == NULL) | |
6104 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6105 | else | |
6106 | syscall_id = xstrprintf ("'%s'", s.name); | |
6107 | ||
6108 | old_chain = make_cleanup (xfree, syscall_id); | |
6109 | ||
6110 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6111 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6112 | b->number, syscall_id); | |
6113 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6114 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6115 | b->number, syscall_id); | |
6116 | ||
6117 | do_cleanups (old_chain); | |
6118 | ||
6119 | return PRINT_SRC_AND_LOC; | |
6120 | } | |
6121 | ||
6122 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6123 | catchpoints. */ | |
6124 | ||
6125 | static void | |
6126 | print_one_catch_syscall (struct breakpoint *b, | |
6127 | struct bp_location **last_loc) | |
6128 | { | |
6129 | struct value_print_options opts; | |
6130 | ||
6131 | get_user_print_options (&opts); | |
6132 | /* Field 4, the address, is omitted (which makes the columns | |
6133 | not line up too nicely with the headers, but the effect | |
6134 | is relatively readable). */ | |
6135 | if (opts.addressprint) | |
6136 | ui_out_field_skip (uiout, "addr"); | |
6137 | annotate_field (5); | |
6138 | ||
6139 | if (b->syscalls_to_be_caught | |
6140 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6141 | ui_out_text (uiout, "syscalls \""); | |
6142 | else | |
6143 | ui_out_text (uiout, "syscall \""); | |
6144 | ||
6145 | if (b->syscalls_to_be_caught) | |
6146 | { | |
6147 | int i, iter; | |
6148 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6149 | |
a96d9b2e SDJ |
6150 | for (i = 0; |
6151 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6152 | i++) | |
6153 | { | |
6154 | char *x = text; | |
6155 | struct syscall s; | |
6156 | get_syscall_by_number (iter, &s); | |
6157 | ||
6158 | if (s.name != NULL) | |
6159 | text = xstrprintf ("%s%s, ", text, s.name); | |
6160 | else | |
6161 | text = xstrprintf ("%s%d, ", text, iter); | |
6162 | ||
6163 | /* We have to xfree the last 'text' (now stored at 'x') | |
6164 | because xstrprintf dinamically allocates new space for it | |
6165 | on every call. */ | |
6166 | xfree (x); | |
6167 | } | |
6168 | /* Remove the last comma. */ | |
6169 | text[strlen (text) - 2] = '\0'; | |
6170 | ui_out_field_string (uiout, "what", text); | |
6171 | } | |
6172 | else | |
6173 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6174 | ui_out_text (uiout, "\" "); | |
6175 | } | |
6176 | ||
6177 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6178 | catchpoints. */ | |
6179 | ||
6180 | static void | |
6181 | print_mention_catch_syscall (struct breakpoint *b) | |
6182 | { | |
6183 | if (b->syscalls_to_be_caught) | |
6184 | { | |
6185 | int i, iter; | |
6186 | ||
6187 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6188 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6189 | else | |
6190 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6191 | ||
6192 | for (i = 0; | |
6193 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6194 | i++) | |
6195 | { | |
6196 | struct syscall s; | |
6197 | get_syscall_by_number (iter, &s); | |
6198 | ||
6199 | if (s.name) | |
6200 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6201 | else | |
6202 | printf_filtered (" %d", s.number); | |
6203 | } | |
6204 | printf_filtered (")"); | |
6205 | } | |
6206 | else | |
6207 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6208 | b->number); | |
6209 | } | |
6210 | ||
6149aea9 PA |
6211 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6212 | catchpoints. */ | |
6213 | ||
6214 | static void | |
6215 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6216 | { | |
6217 | fprintf_unfiltered (fp, "catch syscall"); | |
6218 | ||
6219 | if (b->syscalls_to_be_caught) | |
6220 | { | |
6221 | int i, iter; | |
6222 | ||
6223 | for (i = 0; | |
6224 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6225 | i++) | |
6226 | { | |
6227 | struct syscall s; | |
6228 | ||
6229 | get_syscall_by_number (iter, &s); | |
6230 | if (s.name) | |
6231 | fprintf_unfiltered (fp, " %s", s.name); | |
6232 | else | |
6233 | fprintf_unfiltered (fp, " %d", s.number); | |
6234 | } | |
6235 | } | |
6236 | } | |
6237 | ||
a96d9b2e SDJ |
6238 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6239 | ||
6240 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6241 | { | |
6242 | insert_catch_syscall, | |
6243 | remove_catch_syscall, | |
6244 | breakpoint_hit_catch_syscall, | |
6245 | print_it_catch_syscall, | |
6246 | print_one_catch_syscall, | |
6149aea9 PA |
6247 | print_mention_catch_syscall, |
6248 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6249 | }; |
6250 | ||
6251 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6252 | ||
6253 | static int | |
6254 | syscall_catchpoint_p (struct breakpoint *b) | |
6255 | { | |
6256 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6257 | } | |
6258 | ||
6259 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6260 | but does NOT mention it nor update the global location list. | |
6261 | This is useful if you need to fill more fields in the | |
6262 | struct breakpoint before calling mention. | |
ce78b96d JB |
6263 | |
6264 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6265 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6266 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6267 | to the catchpoint. */ | |
6268 | ||
6269 | static struct breakpoint * | |
a96d9b2e SDJ |
6270 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6271 | char *cond_string, | |
6272 | struct breakpoint_ops *ops) | |
c906108c | 6273 | { |
c5aa993b JM |
6274 | struct symtab_and_line sal; |
6275 | struct breakpoint *b; | |
c5aa993b | 6276 | |
fe39c653 | 6277 | init_sal (&sal); |
6c95b8df | 6278 | sal.pspace = current_program_space; |
c5aa993b | 6279 | |
a6d9a66e | 6280 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6281 | set_breakpoint_count (breakpoint_count + 1); |
6282 | b->number = breakpoint_count; | |
ce78b96d | 6283 | |
1b36a34b | 6284 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6285 | b->thread = -1; |
c906108c | 6286 | b->addr_string = NULL; |
b5de0fa7 EZ |
6287 | b->enable_state = bp_enabled; |
6288 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6289 | b->ops = ops; |
c5aa993b | 6290 | |
a96d9b2e SDJ |
6291 | return b; |
6292 | } | |
6293 | ||
6294 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6295 | ||
6296 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6297 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6298 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6299 | to the catchpoint. */ | |
6300 | ||
6301 | static struct breakpoint * | |
6302 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6303 | char *cond_string, struct breakpoint_ops *ops) | |
6304 | { | |
6305 | struct breakpoint *b = | |
6306 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6307 | ||
c906108c | 6308 | mention (b); |
ce78b96d | 6309 | update_global_location_list (1); |
c906108c | 6310 | |
ce78b96d | 6311 | return b; |
c906108c | 6312 | } |
c5aa993b | 6313 | |
9b70b993 | 6314 | static void |
a6d9a66e UW |
6315 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6316 | int tempflag, char *cond_string, | |
ce78b96d | 6317 | struct breakpoint_ops *ops) |
c906108c | 6318 | { |
a6d9a66e UW |
6319 | struct breakpoint *b |
6320 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6321 | |
6322 | /* FIXME: We should put this information in a breakpoint private data | |
6323 | area. */ | |
6324 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6325 | } |
6326 | ||
fe798b75 JB |
6327 | /* Exec catchpoints. */ |
6328 | ||
9b70b993 | 6329 | static void |
fe798b75 | 6330 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6331 | { |
fe798b75 JB |
6332 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6333 | } | |
c906108c | 6334 | |
fe798b75 JB |
6335 | static int |
6336 | remove_catch_exec (struct breakpoint *b) | |
6337 | { | |
6338 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6339 | } | |
c906108c | 6340 | |
fe798b75 JB |
6341 | static int |
6342 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6343 | { | |
6344 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6345 | } | |
c906108c | 6346 | |
fe798b75 JB |
6347 | static enum print_stop_action |
6348 | print_it_catch_exec (struct breakpoint *b) | |
6349 | { | |
6350 | annotate_catchpoint (b->number); | |
6351 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6352 | b->exec_pathname); | |
6353 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6354 | } |
6355 | ||
fe798b75 | 6356 | static void |
a6d9a66e | 6357 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6358 | { |
6359 | struct value_print_options opts; | |
6360 | ||
6361 | get_user_print_options (&opts); | |
6362 | ||
6363 | /* Field 4, the address, is omitted (which makes the columns | |
6364 | not line up too nicely with the headers, but the effect | |
6365 | is relatively readable). */ | |
6366 | if (opts.addressprint) | |
6367 | ui_out_field_skip (uiout, "addr"); | |
6368 | annotate_field (5); | |
6369 | ui_out_text (uiout, "exec"); | |
6370 | if (b->exec_pathname != NULL) | |
6371 | { | |
6372 | ui_out_text (uiout, ", program \""); | |
6373 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6374 | ui_out_text (uiout, "\" "); | |
6375 | } | |
6376 | } | |
6377 | ||
6378 | static void | |
6379 | print_mention_catch_exec (struct breakpoint *b) | |
6380 | { | |
6381 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6382 | } | |
6383 | ||
6149aea9 PA |
6384 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6385 | catchpoints. */ | |
6386 | ||
6387 | static void | |
6388 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6389 | { | |
6390 | fprintf_unfiltered (fp, "catch exec"); | |
6391 | } | |
6392 | ||
fe798b75 JB |
6393 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6394 | { | |
6395 | insert_catch_exec, | |
6396 | remove_catch_exec, | |
6397 | breakpoint_hit_catch_exec, | |
6398 | print_it_catch_exec, | |
6399 | print_one_catch_exec, | |
6149aea9 PA |
6400 | print_mention_catch_exec, |
6401 | print_recreate_catch_exec | |
fe798b75 JB |
6402 | }; |
6403 | ||
a96d9b2e SDJ |
6404 | static void |
6405 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6406 | struct breakpoint_ops *ops) | |
6407 | { | |
6408 | struct gdbarch *gdbarch = get_current_arch (); | |
6409 | struct breakpoint *b = | |
6410 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6411 | ||
6412 | b->syscalls_to_be_caught = filter; | |
6413 | ||
6414 | /* Now, we have to mention the breakpoint and update the global | |
6415 | location list. */ | |
6416 | mention (b); | |
6417 | update_global_location_list (1); | |
6418 | } | |
6419 | ||
c906108c | 6420 | static int |
fba45db2 | 6421 | hw_breakpoint_used_count (void) |
c906108c | 6422 | { |
52f0bd74 | 6423 | struct breakpoint *b; |
c906108c SS |
6424 | int i = 0; |
6425 | ||
6426 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6427 | { |
d6b74ac4 | 6428 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6429 | i++; |
6430 | } | |
c906108c SS |
6431 | |
6432 | return i; | |
6433 | } | |
6434 | ||
6435 | static int | |
fba45db2 | 6436 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6437 | { |
52f0bd74 | 6438 | struct breakpoint *b; |
c906108c SS |
6439 | int i = 0; |
6440 | ||
6441 | *other_type_used = 0; | |
6442 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6443 | { |
468d015d | 6444 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6445 | { |
6446 | if (b->type == type) | |
6447 | i++; | |
cc60f2e3 | 6448 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6449 | *other_type_used = 1; |
6450 | } | |
6451 | } | |
c906108c SS |
6452 | return i; |
6453 | } | |
6454 | ||
c906108c | 6455 | void |
fba45db2 | 6456 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6457 | { |
c5aa993b | 6458 | struct breakpoint *b; |
c906108c SS |
6459 | |
6460 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6461 | { |
cc60f2e3 | 6462 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6463 | { |
b5de0fa7 | 6464 | b->enable_state = bp_call_disabled; |
b60e7edf | 6465 | update_global_location_list (0); |
c5aa993b JM |
6466 | } |
6467 | } | |
c906108c SS |
6468 | } |
6469 | ||
6470 | void | |
fba45db2 | 6471 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6472 | { |
c5aa993b | 6473 | struct breakpoint *b; |
c906108c SS |
6474 | |
6475 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6476 | { |
cc60f2e3 | 6477 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6478 | { |
b5de0fa7 | 6479 | b->enable_state = bp_enabled; |
b60e7edf | 6480 | update_global_location_list (1); |
c5aa993b JM |
6481 | } |
6482 | } | |
c906108c SS |
6483 | } |
6484 | ||
8bea4e01 UW |
6485 | void |
6486 | disable_breakpoints_before_startup (void) | |
6487 | { | |
6488 | struct breakpoint *b; | |
6489 | int found = 0; | |
6490 | ||
6491 | ALL_BREAKPOINTS (b) | |
6492 | { | |
6c95b8df PA |
6493 | if (b->pspace != current_program_space) |
6494 | continue; | |
6495 | ||
8bea4e01 UW |
6496 | if ((b->type == bp_breakpoint |
6497 | || b->type == bp_hardware_breakpoint) | |
6498 | && breakpoint_enabled (b)) | |
6499 | { | |
6500 | b->enable_state = bp_startup_disabled; | |
6501 | found = 1; | |
6502 | } | |
6503 | } | |
6504 | ||
6505 | if (found) | |
6506 | update_global_location_list (0); | |
6507 | ||
6c95b8df | 6508 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6509 | } |
6510 | ||
6511 | void | |
6512 | enable_breakpoints_after_startup (void) | |
6513 | { | |
6514 | struct breakpoint *b; | |
6515 | int found = 0; | |
6516 | ||
6c95b8df | 6517 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6518 | |
6519 | ALL_BREAKPOINTS (b) | |
6520 | { | |
6c95b8df PA |
6521 | if (b->pspace != current_program_space) |
6522 | continue; | |
6523 | ||
8bea4e01 UW |
6524 | if ((b->type == bp_breakpoint |
6525 | || b->type == bp_hardware_breakpoint) | |
6526 | && b->enable_state == bp_startup_disabled) | |
6527 | { | |
6528 | b->enable_state = bp_enabled; | |
6529 | found = 1; | |
6530 | } | |
6531 | } | |
6532 | ||
6533 | if (found) | |
6534 | breakpoint_re_set (); | |
6535 | } | |
6536 | ||
c906108c SS |
6537 | |
6538 | /* Set a breakpoint that will evaporate an end of command | |
6539 | at address specified by SAL. | |
6540 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6541 | ||
6542 | struct breakpoint * | |
a6d9a66e UW |
6543 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6544 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6545 | { |
52f0bd74 | 6546 | struct breakpoint *b; |
edb3359d DJ |
6547 | |
6548 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6549 | one. */ | |
6550 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6551 | ||
a6d9a66e | 6552 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6553 | b->enable_state = bp_enabled; |
6554 | b->disposition = disp_donttouch; | |
818dd999 | 6555 | b->frame_id = frame_id; |
c906108c SS |
6556 | |
6557 | /* If we're debugging a multi-threaded program, then we | |
6558 | want momentary breakpoints to be active in only a | |
6559 | single thread of control. */ | |
39f77062 KB |
6560 | if (in_thread_list (inferior_ptid)) |
6561 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6562 | |
b60e7edf | 6563 | update_global_location_list_nothrow (1); |
74960c60 | 6564 | |
c906108c SS |
6565 | return b; |
6566 | } | |
611c83ae | 6567 | |
e58b0e63 PA |
6568 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6569 | ORIG is NULL. */ | |
6570 | ||
6571 | struct breakpoint * | |
6572 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6573 | { | |
6574 | struct breakpoint *copy; | |
6575 | ||
6576 | /* If there's nothing to clone, then return nothing. */ | |
6577 | if (orig == NULL) | |
6578 | return NULL; | |
6579 | ||
a6d9a66e | 6580 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6581 | copy->loc = allocate_bp_location (copy); |
6582 | set_breakpoint_location_function (copy->loc); | |
6583 | ||
a6d9a66e | 6584 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6585 | copy->loc->requested_address = orig->loc->requested_address; |
6586 | copy->loc->address = orig->loc->address; | |
6587 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6588 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6589 | |
6590 | if (orig->source_file == NULL) | |
6591 | copy->source_file = NULL; | |
6592 | else | |
6593 | copy->source_file = xstrdup (orig->source_file); | |
6594 | ||
6595 | copy->line_number = orig->line_number; | |
6596 | copy->frame_id = orig->frame_id; | |
6597 | copy->thread = orig->thread; | |
6c95b8df | 6598 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6599 | |
6600 | copy->enable_state = bp_enabled; | |
6601 | copy->disposition = disp_donttouch; | |
6602 | copy->number = internal_breakpoint_number--; | |
6603 | ||
6604 | update_global_location_list_nothrow (0); | |
6605 | return copy; | |
6606 | } | |
6607 | ||
611c83ae | 6608 | struct breakpoint * |
a6d9a66e UW |
6609 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6610 | enum bptype type) | |
611c83ae PA |
6611 | { |
6612 | struct symtab_and_line sal; | |
6613 | ||
6614 | sal = find_pc_line (pc, 0); | |
6615 | sal.pc = pc; | |
6616 | sal.section = find_pc_overlay (pc); | |
6617 | sal.explicit_pc = 1; | |
6618 | ||
a6d9a66e | 6619 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6620 | } |
c906108c | 6621 | \f |
c5aa993b | 6622 | |
c906108c SS |
6623 | /* Tell the user we have just set a breakpoint B. */ |
6624 | ||
6625 | static void | |
fba45db2 | 6626 | mention (struct breakpoint *b) |
c906108c SS |
6627 | { |
6628 | int say_where = 0; | |
fa8a61dc | 6629 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6630 | struct value_print_options opts; |
6631 | ||
6632 | get_user_print_options (&opts); | |
8b93c638 | 6633 | |
9a4105ab AC |
6634 | /* FIXME: This is misplaced; mention() is called by things (like |
6635 | hitting a watchpoint) other than breakpoint creation. It should | |
6636 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6637 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6638 | observer_notify_breakpoint_created (b->number); |
c906108c | 6639 | |
3086aeae DJ |
6640 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6641 | b->ops->print_mention (b); | |
6642 | else | |
6643 | switch (b->type) | |
6644 | { | |
6645 | case bp_none: | |
a3f17187 | 6646 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6647 | break; |
6648 | case bp_watchpoint: | |
6649 | ui_out_text (uiout, "Watchpoint "); | |
6650 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6651 | ui_out_field_int (uiout, "number", b->number); | |
6652 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6653 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6654 | do_cleanups (ui_out_chain); |
6655 | break; | |
6656 | case bp_hardware_watchpoint: | |
6657 | ui_out_text (uiout, "Hardware watchpoint "); | |
6658 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6659 | ui_out_field_int (uiout, "number", b->number); | |
6660 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6661 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6662 | do_cleanups (ui_out_chain); |
6663 | break; | |
6664 | case bp_read_watchpoint: | |
6665 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6666 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6667 | ui_out_field_int (uiout, "number", b->number); | |
6668 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6669 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6670 | do_cleanups (ui_out_chain); |
6671 | break; | |
6672 | case bp_access_watchpoint: | |
6673 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6674 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6675 | ui_out_field_int (uiout, "number", b->number); | |
6676 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6677 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6678 | do_cleanups (ui_out_chain); |
6679 | break; | |
6680 | case bp_breakpoint: | |
6681 | if (ui_out_is_mi_like_p (uiout)) | |
6682 | { | |
6683 | say_where = 0; | |
6684 | break; | |
6685 | } | |
2cec12e5 AR |
6686 | if (b->disposition == disp_del) |
6687 | printf_filtered (_("Temporary breakpoint")); | |
6688 | else | |
6689 | printf_filtered (_("Breakpoint")); | |
6690 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6691 | say_where = 1; |
6692 | break; | |
6693 | case bp_hardware_breakpoint: | |
6694 | if (ui_out_is_mi_like_p (uiout)) | |
6695 | { | |
6696 | say_where = 0; | |
6697 | break; | |
6698 | } | |
a3f17187 | 6699 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6700 | say_where = 1; |
6701 | break; | |
1042e4c0 SS |
6702 | case bp_tracepoint: |
6703 | if (ui_out_is_mi_like_p (uiout)) | |
6704 | { | |
6705 | say_where = 0; | |
6706 | break; | |
6707 | } | |
6708 | printf_filtered (_("Tracepoint")); | |
6709 | printf_filtered (_(" %d"), b->number); | |
6710 | say_where = 1; | |
6711 | break; | |
7a697b8d SS |
6712 | case bp_fast_tracepoint: |
6713 | if (ui_out_is_mi_like_p (uiout)) | |
6714 | { | |
6715 | say_where = 0; | |
6716 | break; | |
6717 | } | |
6718 | printf_filtered (_("Fast tracepoint")); | |
6719 | printf_filtered (_(" %d"), b->number); | |
6720 | say_where = 1; | |
6721 | break; | |
3086aeae DJ |
6722 | |
6723 | case bp_until: | |
6724 | case bp_finish: | |
6725 | case bp_longjmp: | |
6726 | case bp_longjmp_resume: | |
6727 | case bp_step_resume: | |
3086aeae | 6728 | case bp_call_dummy: |
aa7d318d | 6729 | case bp_std_terminate: |
3086aeae DJ |
6730 | case bp_watchpoint_scope: |
6731 | case bp_shlib_event: | |
6732 | case bp_thread_event: | |
6733 | case bp_overlay_event: | |
4efc6507 | 6734 | case bp_jit_event: |
0fd8e87f | 6735 | case bp_longjmp_master: |
aa7d318d | 6736 | case bp_std_terminate_master: |
3086aeae DJ |
6737 | break; |
6738 | } | |
c906108c | 6739 | |
c906108c SS |
6740 | if (say_where) |
6741 | { | |
a3f17187 AC |
6742 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6743 | single string. */ | |
0d381245 | 6744 | if (b->loc == NULL) |
c906108c | 6745 | { |
a3f17187 | 6746 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6747 | } |
6748 | else | |
6749 | { | |
79a45b7d | 6750 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6751 | { |
6752 | printf_filtered (" at "); | |
5af949e3 UW |
6753 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6754 | gdb_stdout); | |
0101ce28 JJ |
6755 | } |
6756 | if (b->source_file) | |
6757 | printf_filtered (": file %s, line %d.", | |
6758 | b->source_file, b->line_number); | |
0d381245 VP |
6759 | |
6760 | if (b->loc->next) | |
6761 | { | |
6762 | struct bp_location *loc = b->loc; | |
6763 | int n = 0; | |
6764 | for (; loc; loc = loc->next) | |
6765 | ++n; | |
6766 | printf_filtered (" (%d locations)", n); | |
6767 | } | |
6768 | ||
c906108c | 6769 | } |
c906108c | 6770 | } |
9dc5e2a9 | 6771 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6772 | return; |
c906108c SS |
6773 | printf_filtered ("\n"); |
6774 | } | |
c906108c | 6775 | \f |
c5aa993b | 6776 | |
0d381245 | 6777 | static struct bp_location * |
39d61571 | 6778 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6779 | const struct symtab_and_line *sal) |
6780 | { | |
6781 | struct bp_location *loc, **tmp; | |
6782 | ||
39d61571 | 6783 | loc = allocate_bp_location (b); |
0d381245 VP |
6784 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6785 | ; | |
6786 | *tmp = loc; | |
a6d9a66e UW |
6787 | loc->gdbarch = get_sal_arch (*sal); |
6788 | if (!loc->gdbarch) | |
6789 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6790 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6791 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6792 | loc->requested_address, b->type); | |
6c95b8df PA |
6793 | loc->pspace = sal->pspace; |
6794 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6795 | loc->section = sal->section; |
6796 | ||
6797 | set_breakpoint_location_function (loc); | |
6798 | return loc; | |
6799 | } | |
514f746b AR |
6800 | \f |
6801 | ||
6802 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6803 | return 0 otherwise. */ | |
6804 | ||
6805 | static int | |
6806 | bp_loc_is_permanent (struct bp_location *loc) | |
6807 | { | |
6808 | int len; | |
6809 | CORE_ADDR addr; | |
6810 | const gdb_byte *brk; | |
6811 | gdb_byte *target_mem; | |
939c61fa JK |
6812 | struct cleanup *cleanup; |
6813 | int retval = 0; | |
514f746b AR |
6814 | |
6815 | gdb_assert (loc != NULL); | |
6816 | ||
6817 | addr = loc->address; | |
a6d9a66e | 6818 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6819 | |
939c61fa JK |
6820 | /* Software breakpoints unsupported? */ |
6821 | if (brk == NULL) | |
6822 | return 0; | |
6823 | ||
514f746b AR |
6824 | target_mem = alloca (len); |
6825 | ||
939c61fa JK |
6826 | /* Enable the automatic memory restoration from breakpoints while |
6827 | we read the memory. Otherwise we could say about our temporary | |
6828 | breakpoints they are permanent. */ | |
6c95b8df PA |
6829 | cleanup = save_current_space_and_thread (); |
6830 | ||
6831 | switch_to_program_space_and_thread (loc->pspace); | |
6832 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6833 | |
514f746b AR |
6834 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6835 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6836 | retval = 1; |
514f746b | 6837 | |
939c61fa JK |
6838 | do_cleanups (cleanup); |
6839 | ||
6840 | return retval; | |
514f746b AR |
6841 | } |
6842 | ||
6843 | ||
c3f6f71d | 6844 | |
018d34a4 VP |
6845 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6846 | as textual description of the location, and COND_STRING | |
db107f19 | 6847 | as condition expression. */ |
018d34a4 VP |
6848 | |
6849 | static void | |
8cdf0e15 VP |
6850 | create_breakpoint_sal (struct gdbarch *gdbarch, |
6851 | struct symtabs_and_lines sals, char *addr_string, | |
6852 | char *cond_string, | |
6853 | enum bptype type, enum bpdisp disposition, | |
6854 | int thread, int task, int ignore_count, | |
6855 | struct breakpoint_ops *ops, int from_tty, int enabled) | |
018d34a4 | 6856 | { |
0d381245 VP |
6857 | struct breakpoint *b = NULL; |
6858 | int i; | |
018d34a4 VP |
6859 | |
6860 | if (type == bp_hardware_breakpoint) | |
6861 | { | |
6862 | int i = hw_breakpoint_used_count (); | |
6863 | int target_resources_ok = | |
d92524f1 | 6864 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6865 | i + 1, 0); |
6866 | if (target_resources_ok == 0) | |
6867 | error (_("No hardware breakpoint support in the target.")); | |
6868 | else if (target_resources_ok < 0) | |
6869 | error (_("Hardware breakpoints used exceeds limit.")); | |
6870 | } | |
6871 | ||
6c95b8df PA |
6872 | gdb_assert (sals.nelts > 0); |
6873 | ||
0d381245 VP |
6874 | for (i = 0; i < sals.nelts; ++i) |
6875 | { | |
6876 | struct symtab_and_line sal = sals.sals[i]; | |
6877 | struct bp_location *loc; | |
6878 | ||
6879 | if (from_tty) | |
5af949e3 UW |
6880 | { |
6881 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6882 | if (!loc_gdbarch) | |
6883 | loc_gdbarch = gdbarch; | |
6884 | ||
6885 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6886 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6887 | } |
0d381245 VP |
6888 | |
6889 | if (i == 0) | |
6890 | { | |
a6d9a66e | 6891 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6892 | set_breakpoint_count (breakpoint_count + 1); |
6893 | b->number = breakpoint_count; | |
6894 | b->thread = thread; | |
4a306c9a | 6895 | b->task = task; |
018d34a4 | 6896 | |
0d381245 VP |
6897 | b->cond_string = cond_string; |
6898 | b->ignore_count = ignore_count; | |
41447f92 | 6899 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6900 | b->disposition = disposition; |
018d34a4 | 6901 | |
6c95b8df PA |
6902 | b->pspace = sals.sals[0].pspace; |
6903 | ||
6904 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6905 | && (b->type == bp_breakpoint |
6906 | || b->type == bp_hardware_breakpoint)) | |
6907 | b->enable_state = bp_startup_disabled; | |
6908 | ||
0d381245 VP |
6909 | loc = b->loc; |
6910 | } | |
6911 | else | |
018d34a4 | 6912 | { |
39d61571 | 6913 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6914 | } |
6915 | ||
514f746b AR |
6916 | if (bp_loc_is_permanent (loc)) |
6917 | make_breakpoint_permanent (b); | |
6918 | ||
0d381245 VP |
6919 | if (b->cond_string) |
6920 | { | |
6921 | char *arg = b->cond_string; | |
d32a6982 | 6922 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6923 | if (*arg) |
db107f19 | 6924 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6925 | } |
0d381245 | 6926 | } |
018d34a4 VP |
6927 | |
6928 | if (addr_string) | |
6929 | b->addr_string = addr_string; | |
6930 | else | |
6931 | /* addr_string has to be used or breakpoint_re_set will delete | |
6932 | me. */ | |
5af949e3 UW |
6933 | b->addr_string |
6934 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 6935 | |
604133b5 | 6936 | b->ops = ops; |
018d34a4 VP |
6937 | mention (b); |
6938 | } | |
6939 | ||
ed0616c6 VP |
6940 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
6941 | elements to fill the void space. */ | |
2c0b251b PA |
6942 | static void |
6943 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
6944 | { |
6945 | int i = index_to_remove+1; | |
6946 | int last_index = sal->nelts-1; | |
6947 | ||
6948 | for (;i <= last_index; ++i) | |
6949 | sal->sals[i-1] = sal->sals[i]; | |
6950 | ||
6951 | --(sal->nelts); | |
6952 | } | |
6953 | ||
6c95b8df PA |
6954 | /* If appropriate, obtains all sals that correspond to the same file |
6955 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
6956 | will want to set a breakpoint at foo.c:line, and not really care | |
6957 | about program spaces. This is done only if SAL does not have | |
6958 | explicit PC and has line and file information. If we got just a | |
6959 | single expanded sal, return the original. | |
ed0616c6 | 6960 | |
6c95b8df PA |
6961 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
6962 | which the name of enclosing function is different from SAL. This | |
6963 | makes sure that if we have breakpoint originally set in template | |
6964 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
6965 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 6966 | |
2c0b251b | 6967 | static struct symtabs_and_lines |
ed0616c6 VP |
6968 | expand_line_sal_maybe (struct symtab_and_line sal) |
6969 | { | |
6970 | struct symtabs_and_lines expanded; | |
6971 | CORE_ADDR original_pc = sal.pc; | |
6972 | char *original_function = NULL; | |
6973 | int found; | |
6974 | int i; | |
6c95b8df | 6975 | struct cleanup *old_chain; |
ed0616c6 VP |
6976 | |
6977 | /* If we have explicit pc, don't expand. | |
6978 | If we have no line number, we can't expand. */ | |
6979 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
6980 | { | |
6981 | expanded.nelts = 1; | |
6982 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6983 | expanded.sals[0] = sal; | |
6984 | return expanded; | |
6985 | } | |
6986 | ||
6987 | sal.pc = 0; | |
6c95b8df PA |
6988 | |
6989 | old_chain = save_current_space_and_thread (); | |
6990 | ||
6991 | switch_to_program_space_and_thread (sal.pspace); | |
6992 | ||
ed0616c6 | 6993 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
6994 | |
6995 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 6996 | expanded = expand_line_sal (sal); |
6c95b8df | 6997 | |
ed0616c6 VP |
6998 | if (expanded.nelts == 1) |
6999 | { | |
3dba1c98 JB |
7000 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7001 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7002 | xfree (expanded.sals); |
7003 | expanded.nelts = 1; | |
7004 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7005 | sal.pc = original_pc; | |
7006 | expanded.sals[0] = sal; | |
3dba1c98 | 7007 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7008 | do_cleanups (old_chain); |
ed0616c6 VP |
7009 | return expanded; |
7010 | } | |
7011 | ||
7012 | if (!sal.explicit_line) | |
7013 | { | |
7014 | CORE_ADDR func_addr, func_end; | |
7015 | for (i = 0; i < expanded.nelts; ++i) | |
7016 | { | |
7017 | CORE_ADDR pc = expanded.sals[i].pc; | |
7018 | char *this_function; | |
6c95b8df PA |
7019 | |
7020 | /* We need to switch threads as well since we're about to | |
7021 | read memory. */ | |
7022 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7023 | ||
ed0616c6 VP |
7024 | if (find_pc_partial_function (pc, &this_function, |
7025 | &func_addr, &func_end)) | |
7026 | { | |
059fb39f PM |
7027 | if (this_function |
7028 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7029 | { |
7030 | remove_sal (&expanded, i); | |
7031 | --i; | |
7032 | } | |
ed0616c6 VP |
7033 | } |
7034 | } | |
7035 | } | |
059acae7 UW |
7036 | |
7037 | /* Skip the function prologue if necessary. */ | |
7038 | for (i = 0; i < expanded.nelts; ++i) | |
7039 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7040 | |
6c95b8df PA |
7041 | do_cleanups (old_chain); |
7042 | ||
ed0616c6 VP |
7043 | if (expanded.nelts <= 1) |
7044 | { | |
7045 | /* This is un ugly workaround. If we get zero | |
7046 | expanded sals then something is really wrong. | |
7047 | Fix that by returnign the original sal. */ | |
7048 | xfree (expanded.sals); | |
7049 | expanded.nelts = 1; | |
7050 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7051 | sal.pc = original_pc; | |
7052 | expanded.sals[0] = sal; | |
7053 | return expanded; | |
7054 | } | |
7055 | ||
7056 | if (original_pc) | |
7057 | { | |
7058 | found = 0; | |
7059 | for (i = 0; i < expanded.nelts; ++i) | |
7060 | if (expanded.sals[i].pc == original_pc) | |
7061 | { | |
7062 | found = 1; | |
7063 | break; | |
7064 | } | |
7065 | gdb_assert (found); | |
7066 | } | |
7067 | ||
7068 | return expanded; | |
7069 | } | |
7070 | ||
018d34a4 VP |
7071 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7072 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7073 | value. COND_STRING, if not NULL, specified the condition to be | |
7074 | used for all breakpoints. Essentially the only case where | |
7075 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7076 | function. In that case, it's still not possible to specify | |
7077 | separate conditions for different overloaded functions, so | |
7078 | we take just a single condition string. | |
7079 | ||
c3f6f71d | 7080 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7081 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7082 | array contents). If the function fails (error() is called), the |
7083 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
7084 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
7085 | |
7086 | static void | |
8cdf0e15 VP |
7087 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7088 | struct symtabs_and_lines sals, char **addr_string, | |
7089 | char *cond_string, | |
7090 | enum bptype type, enum bpdisp disposition, | |
7091 | int thread, int task, int ignore_count, | |
7092 | struct breakpoint_ops *ops, int from_tty, | |
7093 | int enabled) | |
c906108c | 7094 | { |
018d34a4 | 7095 | int i; |
cc59ec59 | 7096 | |
018d34a4 | 7097 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7098 | { |
ed0616c6 VP |
7099 | struct symtabs_and_lines expanded = |
7100 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7101 | |
8cdf0e15 VP |
7102 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7103 | cond_string, type, disposition, | |
7104 | thread, task, ignore_count, ops, from_tty, enabled); | |
c3f6f71d | 7105 | } |
c3f6f71d | 7106 | } |
c906108c | 7107 | |
c3f6f71d JM |
7108 | /* Parse ARG which is assumed to be a SAL specification possibly |
7109 | followed by conditionals. On return, SALS contains an array of SAL | |
7110 | addresses found. ADDR_STRING contains a vector of (canonical) | |
7111 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7112 | |
b9362cc7 | 7113 | static void |
c3f6f71d JM |
7114 | parse_breakpoint_sals (char **address, |
7115 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7116 | char ***addr_string, |
7117 | int *not_found_ptr) | |
c3f6f71d JM |
7118 | { |
7119 | char *addr_start = *address; | |
cc59ec59 | 7120 | |
c3f6f71d JM |
7121 | *addr_string = NULL; |
7122 | /* If no arg given, or if first arg is 'if ', use the default | |
7123 | breakpoint. */ | |
7124 | if ((*address) == NULL | |
7125 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7126 | { |
7127 | if (default_breakpoint_valid) | |
7128 | { | |
c3f6f71d | 7129 | struct symtab_and_line sal; |
cc59ec59 | 7130 | |
fe39c653 | 7131 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 7132 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7133 | xmalloc (sizeof (struct symtab_and_line)); |
7134 | sal.pc = default_breakpoint_address; | |
7135 | sal.line = default_breakpoint_line; | |
7136 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7137 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7138 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
7139 | |
7140 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
7141 | the default_breakpoint_address. So make sure to set | |
7142 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
7143 | sals to include all other instances with the same symtab and line. | |
7144 | */ | |
7145 | sal.explicit_pc = 1; | |
7146 | ||
c3f6f71d JM |
7147 | sals->sals[0] = sal; |
7148 | sals->nelts = 1; | |
c906108c SS |
7149 | } |
7150 | else | |
8a3fe4f8 | 7151 | error (_("No default breakpoint address now.")); |
c906108c SS |
7152 | } |
7153 | else | |
7154 | { | |
c906108c | 7155 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
7156 | current_source_symtab (which is decode_line_1's default). This |
7157 | should produce the results we want almost all of the time while | |
1aeae86e AF |
7158 | leaving default_breakpoint_* alone. |
7159 | ObjC: However, don't match an Objective-C method name which | |
7160 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7161 | |
c214a6fd | 7162 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7163 | |
c906108c | 7164 | if (default_breakpoint_valid |
0378c332 | 7165 | && (!cursal.symtab |
1aeae86e AF |
7166 | || ((strchr ("+-", (*address)[0]) != NULL) |
7167 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7168 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7169 | default_breakpoint_line, addr_string, |
7170 | not_found_ptr); | |
c906108c | 7171 | else |
0101ce28 JJ |
7172 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7173 | addr_string, not_found_ptr); | |
c906108c | 7174 | } |
c3f6f71d JM |
7175 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7176 | if (sals->nelts > 0 && *addr_string == NULL) | |
7177 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7178 | if (addr_start != (*address)) | |
c906108c | 7179 | { |
c3f6f71d | 7180 | int i; |
cc59ec59 | 7181 | |
c3f6f71d | 7182 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7183 | { |
c3f6f71d JM |
7184 | /* Add the string if not present. */ |
7185 | if ((*addr_string)[i] == NULL) | |
cc59ec59 MS |
7186 | (*addr_string)[i] = savestring (addr_start, |
7187 | (*address) - addr_start); | |
c906108c SS |
7188 | } |
7189 | } | |
c3f6f71d | 7190 | } |
c906108c | 7191 | |
c906108c | 7192 | |
c3f6f71d JM |
7193 | /* Convert each SAL into a real PC. Verify that the PC can be |
7194 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 7195 | |
b9362cc7 | 7196 | static void |
c3f6f71d JM |
7197 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
7198 | char *address) | |
7199 | { | |
7200 | int i; | |
cc59ec59 | 7201 | |
c3f6f71d | 7202 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7203 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7204 | } |
7205 | ||
7a697b8d SS |
7206 | /* Fast tracepoints may have restrictions on valid locations. For |
7207 | instance, a fast tracepoint using a jump instead of a trap will | |
7208 | likely have to overwrite more bytes than a trap would, and so can | |
7209 | only be placed where the instruction is longer than the jump, or a | |
7210 | multi-instruction sequence does not have a jump into the middle of | |
7211 | it, etc. */ | |
7212 | ||
7213 | static void | |
7214 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7215 | struct symtabs_and_lines *sals) | |
7216 | { | |
7217 | int i, rslt; | |
7218 | struct symtab_and_line *sal; | |
7219 | char *msg; | |
7220 | struct cleanup *old_chain; | |
7221 | ||
7222 | for (i = 0; i < sals->nelts; i++) | |
7223 | { | |
7224 | sal = &sals->sals[i]; | |
7225 | ||
7226 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7227 | NULL, &msg); | |
7228 | old_chain = make_cleanup (xfree, msg); | |
7229 | ||
7230 | if (!rslt) | |
7231 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7232 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7233 | ||
7234 | do_cleanups (old_chain); | |
7235 | } | |
7236 | } | |
7237 | ||
05ff989b | 7238 | static void |
0101ce28 JJ |
7239 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7240 | { | |
7241 | struct captured_parse_breakpoint_args *args = data; | |
7242 | ||
7243 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7244 | args->not_found_ptr); | |
0101ce28 JJ |
7245 | } |
7246 | ||
018d34a4 VP |
7247 | /* Given TOK, a string specification of condition and thread, as |
7248 | accepted by the 'break' command, extract the condition | |
7249 | string and thread number and set *COND_STRING and *THREAD. | |
7250 | PC identifies the context at which the condition should be parsed. | |
7251 | If no condition is found, *COND_STRING is set to NULL. | |
7252 | If no thread is found, *THREAD is set to -1. */ | |
7253 | static void | |
7254 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7255 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7256 | { |
7257 | *cond_string = NULL; | |
7258 | *thread = -1; | |
7259 | while (tok && *tok) | |
7260 | { | |
7261 | char *end_tok; | |
7262 | int toklen; | |
7263 | char *cond_start = NULL; | |
7264 | char *cond_end = NULL; | |
cc59ec59 | 7265 | |
018d34a4 VP |
7266 | while (*tok == ' ' || *tok == '\t') |
7267 | tok++; | |
7268 | ||
7269 | end_tok = tok; | |
7270 | ||
7271 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7272 | end_tok++; | |
7273 | ||
7274 | toklen = end_tok - tok; | |
7275 | ||
7276 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7277 | { | |
f7545552 TT |
7278 | struct expression *expr; |
7279 | ||
018d34a4 | 7280 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7281 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7282 | xfree (expr); | |
018d34a4 VP |
7283 | cond_end = tok; |
7284 | *cond_string = savestring (cond_start, | |
7285 | cond_end - cond_start); | |
7286 | } | |
7287 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7288 | { | |
7289 | char *tmptok; | |
7290 | ||
7291 | tok = end_tok + 1; | |
7292 | tmptok = tok; | |
7293 | *thread = strtol (tok, &tok, 0); | |
7294 | if (tok == tmptok) | |
7295 | error (_("Junk after thread keyword.")); | |
7296 | if (!valid_thread_id (*thread)) | |
7297 | error (_("Unknown thread %d."), *thread); | |
7298 | } | |
4a306c9a JB |
7299 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7300 | { | |
7301 | char *tmptok; | |
7302 | ||
7303 | tok = end_tok + 1; | |
7304 | tmptok = tok; | |
7305 | *task = strtol (tok, &tok, 0); | |
7306 | if (tok == tmptok) | |
7307 | error (_("Junk after task keyword.")); | |
7308 | if (!valid_task_id (*task)) | |
b6199126 | 7309 | error (_("Unknown task %d."), *task); |
4a306c9a | 7310 | } |
018d34a4 VP |
7311 | else |
7312 | error (_("Junk at end of arguments.")); | |
7313 | } | |
7314 | } | |
7315 | ||
fd9b8c24 PA |
7316 | /* Set a breakpoint. This function is shared between CLI and MI |
7317 | functions for setting a breakpoint. This function has two major | |
7318 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7319 | parameter. If non-zero, the function will parse arg, extracting | |
7320 | breakpoint location, address and thread. Otherwise, ARG is just the | |
7321 | location of breakpoint, with condition and thread specified by the | |
7322 | COND_STRING and THREAD parameters. Returns true if any breakpoint | |
7323 | was created; false otherwise. */ | |
0101ce28 | 7324 | |
8cdf0e15 VP |
7325 | int |
7326 | create_breakpoint (struct gdbarch *gdbarch, | |
7327 | char *arg, char *cond_string, int thread, | |
7328 | int parse_condition_and_thread, | |
7329 | int tempflag, int hardwareflag, int traceflag, | |
7330 | int ignore_count, | |
7331 | enum auto_boolean pending_break_support, | |
7332 | struct breakpoint_ops *ops, | |
7333 | int from_tty, | |
7334 | int enabled) | |
c3f6f71d | 7335 | { |
71fff37b | 7336 | struct gdb_exception e; |
c3f6f71d | 7337 | struct symtabs_and_lines sals; |
0101ce28 | 7338 | struct symtab_and_line pending_sal; |
0101ce28 | 7339 | char *copy_arg; |
c3f6f71d JM |
7340 | char *addr_start = arg; |
7341 | char **addr_string; | |
7342 | struct cleanup *old_chain; | |
80c99de1 | 7343 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7344 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7345 | int i; |
0101ce28 | 7346 | int pending = 0; |
0101ce28 | 7347 | int not_found = 0; |
1042e4c0 | 7348 | enum bptype type_wanted; |
4a306c9a | 7349 | int task = 0; |
86b17b60 | 7350 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7351 | |
c3f6f71d JM |
7352 | sals.sals = NULL; |
7353 | sals.nelts = 0; | |
7354 | addr_string = NULL; | |
c3f6f71d | 7355 | |
0101ce28 JJ |
7356 | parse_args.arg_p = &arg; |
7357 | parse_args.sals_p = &sals; | |
7358 | parse_args.addr_string_p = &addr_string; | |
7359 | parse_args.not_found_ptr = ¬_found; | |
7360 | ||
05ff989b AC |
7361 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7362 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7363 | |
7364 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7365 | switch (e.reason) |
0101ce28 | 7366 | { |
05ff989b | 7367 | case RETURN_QUIT: |
98deb0da | 7368 | throw_exception (e); |
05ff989b AC |
7369 | case RETURN_ERROR: |
7370 | switch (e.error) | |
0101ce28 | 7371 | { |
05ff989b | 7372 | case NOT_FOUND_ERROR: |
0101ce28 | 7373 | |
05ff989b AC |
7374 | /* If pending breakpoint support is turned off, throw |
7375 | error. */ | |
fa8d40ab JJ |
7376 | |
7377 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7378 | throw_exception (e); |
7379 | ||
7380 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7381 | |
05ff989b AC |
7382 | /* If pending breakpoint support is auto query and the user |
7383 | selects no, then simply return the error code. */ | |
059fb39f PM |
7384 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
7385 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
fd9b8c24 | 7386 | return 0; |
fa8d40ab | 7387 | |
05ff989b AC |
7388 | /* At this point, either the user was queried about setting |
7389 | a pending breakpoint and selected yes, or pending | |
7390 | breakpoint behavior is on and thus a pending breakpoint | |
7391 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7392 | copy_arg = xstrdup (addr_start); |
7393 | addr_string = ©_arg; | |
7394 | sals.nelts = 1; | |
7395 | sals.sals = &pending_sal; | |
7396 | pending_sal.pc = 0; | |
7397 | pending = 1; | |
05ff989b AC |
7398 | break; |
7399 | default: | |
98deb0da | 7400 | throw_exception (e); |
0101ce28 | 7401 | } |
05ff989b AC |
7402 | default: |
7403 | if (!sals.nelts) | |
fd9b8c24 | 7404 | return 0; |
0101ce28 | 7405 | } |
c3f6f71d JM |
7406 | |
7407 | /* Create a chain of things that always need to be cleaned up. */ | |
7408 | old_chain = make_cleanup (null_cleanup, 0); | |
7409 | ||
0101ce28 JJ |
7410 | if (!pending) |
7411 | { | |
7412 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7413 | make_cleanup (xfree, sals.sals); | |
7414 | ||
7415 | /* Cleanup the addr_string array but not its contents. */ | |
7416 | make_cleanup (xfree, addr_string); | |
7417 | } | |
c3f6f71d | 7418 | |
c3f6f71d JM |
7419 | /* ----------------------------- SNIP ----------------------------- |
7420 | Anything added to the cleanup chain beyond this point is assumed | |
7421 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7422 | then the memory is not reclaimed. */ |
7423 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7424 | |
7425 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7426 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7427 | for (i = 0; i < sals.nelts; i++) |
7428 | { | |
7429 | if (addr_string[i] != NULL) | |
b8c9b27d | 7430 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7431 | } |
7432 | ||
7433 | /* Resolve all line numbers to PC's and verify that the addresses | |
7434 | are ok for the target. */ | |
0101ce28 JJ |
7435 | if (!pending) |
7436 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 7437 | |
1042e4c0 | 7438 | type_wanted = (traceflag |
7a697b8d | 7439 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
7440 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
7441 | ||
7a697b8d SS |
7442 | /* Fast tracepoints may have additional restrictions on location. */ |
7443 | if (type_wanted == bp_fast_tracepoint) | |
7444 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7445 | ||
c3f6f71d JM |
7446 | /* Verify that condition can be parsed, before setting any |
7447 | breakpoints. Allocate a separate condition expression for each | |
7448 | breakpoint. */ | |
0101ce28 | 7449 | if (!pending) |
c3f6f71d | 7450 | { |
2f069f6f | 7451 | if (parse_condition_and_thread) |
72b2ff0e VP |
7452 | { |
7453 | /* Here we only parse 'arg' to separate condition | |
7454 | from thread number, so parsing in context of first | |
7455 | sal is OK. When setting the breakpoint we'll | |
7456 | re-parse it in context of each sal. */ | |
7457 | cond_string = NULL; | |
7458 | thread = -1; | |
4a306c9a JB |
7459 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7460 | &thread, &task); | |
72b2ff0e VP |
7461 | if (cond_string) |
7462 | make_cleanup (xfree, cond_string); | |
7463 | } | |
2f069f6f | 7464 | else |
72b2ff0e VP |
7465 | { |
7466 | /* Create a private copy of condition string. */ | |
7467 | if (cond_string) | |
7468 | { | |
7469 | cond_string = xstrdup (cond_string); | |
7470 | make_cleanup (xfree, cond_string); | |
7471 | } | |
7472 | } | |
8cdf0e15 VP |
7473 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, |
7474 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7475 | thread, task, ignore_count, ops, from_tty, | |
7476 | enabled); | |
c906108c | 7477 | } |
0101ce28 JJ |
7478 | else |
7479 | { | |
0101ce28 JJ |
7480 | struct breakpoint *b; |
7481 | ||
0101ce28 JJ |
7482 | make_cleanup (xfree, copy_arg); |
7483 | ||
a6d9a66e | 7484 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
7485 | set_breakpoint_count (breakpoint_count + 1); |
7486 | b->number = breakpoint_count; | |
72b2ff0e | 7487 | b->thread = -1; |
018d34a4 | 7488 | b->addr_string = addr_string[0]; |
72b2ff0e | 7489 | b->cond_string = NULL; |
0101ce28 | 7490 | b->ignore_count = ignore_count; |
0101ce28 | 7491 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7492 | b->condition_not_parsed = 1; |
604133b5 | 7493 | b->ops = ops; |
41447f92 | 7494 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7495 | b->pspace = current_program_space; |
74960c60 | 7496 | |
6c95b8df | 7497 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7498 | && (b->type == bp_breakpoint |
7499 | || b->type == bp_hardware_breakpoint)) | |
7500 | b->enable_state = bp_startup_disabled; | |
7501 | ||
0101ce28 JJ |
7502 | mention (b); |
7503 | } | |
7504 | ||
c3f6f71d | 7505 | if (sals.nelts > 1) |
95a42b64 TT |
7506 | { |
7507 | warning (_("Multiple breakpoints were set.\n" | |
7508 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7509 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7510 | } |
7511 | ||
80c99de1 PA |
7512 | /* That's it. Discard the cleanups for data inserted into the |
7513 | breakpoint. */ | |
7514 | discard_cleanups (bkpt_chain); | |
7515 | /* But cleanup everything else. */ | |
c3f6f71d | 7516 | do_cleanups (old_chain); |
217dc9e2 | 7517 | |
80c99de1 | 7518 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7519 | update_global_location_list (1); |
fd9b8c24 PA |
7520 | |
7521 | return 1; | |
c3f6f71d | 7522 | } |
c906108c | 7523 | |
72b2ff0e VP |
7524 | /* Set a breakpoint. |
7525 | ARG is a string describing breakpoint address, | |
7526 | condition, and thread. | |
7527 | FLAG specifies if a breakpoint is hardware on, | |
7528 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7529 | and BP_TEMPFLAG. */ | |
7530 | ||
98deb0da | 7531 | static void |
72b2ff0e | 7532 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7533 | { |
72b2ff0e VP |
7534 | int hardwareflag = flag & BP_HARDWAREFLAG; |
7535 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 7536 | |
8cdf0e15 VP |
7537 | create_breakpoint (get_current_arch (), |
7538 | arg, | |
7539 | NULL, 0, 1 /* parse arg */, | |
7540 | tempflag, hardwareflag, 0 /* traceflag */, | |
7541 | 0 /* Ignore count */, | |
7542 | pending_break_support, | |
7543 | NULL /* breakpoint_ops */, | |
7544 | from_tty, | |
7545 | 1 /* enabled */); | |
c906108c SS |
7546 | } |
7547 | ||
72b2ff0e | 7548 | |
c906108c SS |
7549 | /* Helper function for break_command_1 and disassemble_command. */ |
7550 | ||
7551 | void | |
fba45db2 | 7552 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7553 | { |
7554 | CORE_ADDR pc; | |
7555 | ||
7556 | if (sal->pc == 0 && sal->symtab != NULL) | |
7557 | { | |
7558 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7559 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7560 | sal->line, sal->symtab->filename); |
7561 | sal->pc = pc; | |
6a048695 JB |
7562 | |
7563 | /* If this SAL corresponds to a breakpoint inserted using | |
7564 | a line number, then skip the function prologue if necessary. */ | |
7565 | if (sal->explicit_line) | |
059acae7 | 7566 | skip_prologue_sal (sal); |
c906108c SS |
7567 | } |
7568 | ||
7569 | if (sal->section == 0 && sal->symtab != NULL) | |
7570 | { | |
7571 | struct blockvector *bv; | |
c5aa993b JM |
7572 | struct block *b; |
7573 | struct symbol *sym; | |
c906108c | 7574 | |
801e3a5b | 7575 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7576 | if (bv != NULL) |
7577 | { | |
7f0df278 | 7578 | sym = block_linkage_function (b); |
c906108c SS |
7579 | if (sym != NULL) |
7580 | { | |
7581 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7582 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7583 | } |
7584 | else | |
7585 | { | |
7586 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7587 | have to look harder. This case can be executed if we have |
7588 | line numbers but no functions (as can happen in assembly | |
7589 | source). */ | |
c906108c | 7590 | |
c5aa993b | 7591 | struct minimal_symbol *msym; |
6c95b8df PA |
7592 | struct cleanup *old_chain = save_current_space_and_thread (); |
7593 | ||
7594 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7595 | |
7596 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7597 | if (msym) | |
714835d5 | 7598 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7599 | |
7600 | do_cleanups (old_chain); | |
c906108c SS |
7601 | } |
7602 | } | |
7603 | } | |
7604 | } | |
7605 | ||
7606 | void | |
fba45db2 | 7607 | break_command (char *arg, int from_tty) |
c906108c | 7608 | { |
db107f19 | 7609 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7610 | } |
7611 | ||
c906108c | 7612 | void |
fba45db2 | 7613 | tbreak_command (char *arg, int from_tty) |
c906108c | 7614 | { |
db107f19 | 7615 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7616 | } |
7617 | ||
c906108c | 7618 | static void |
fba45db2 | 7619 | hbreak_command (char *arg, int from_tty) |
c906108c | 7620 | { |
db107f19 | 7621 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7622 | } |
7623 | ||
7624 | static void | |
fba45db2 | 7625 | thbreak_command (char *arg, int from_tty) |
c906108c | 7626 | { |
db107f19 | 7627 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7628 | } |
7629 | ||
7630 | static void | |
fba45db2 | 7631 | stop_command (char *arg, int from_tty) |
c906108c | 7632 | { |
a3f17187 | 7633 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7634 | Usage: stop in <function | address>\n\ |
a3f17187 | 7635 | stop at <line>\n")); |
c906108c SS |
7636 | } |
7637 | ||
7638 | static void | |
fba45db2 | 7639 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7640 | { |
7641 | int badInput = 0; | |
7642 | ||
c5aa993b | 7643 | if (arg == (char *) NULL) |
c906108c SS |
7644 | badInput = 1; |
7645 | else if (*arg != '*') | |
7646 | { | |
7647 | char *argptr = arg; | |
7648 | int hasColon = 0; | |
7649 | ||
53a5351d JM |
7650 | /* look for a ':'. If this is a line number specification, then |
7651 | say it is bad, otherwise, it should be an address or | |
7652 | function/method name */ | |
c906108c | 7653 | while (*argptr && !hasColon) |
c5aa993b JM |
7654 | { |
7655 | hasColon = (*argptr == ':'); | |
7656 | argptr++; | |
7657 | } | |
c906108c SS |
7658 | |
7659 | if (hasColon) | |
c5aa993b | 7660 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7661 | else |
c5aa993b | 7662 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7663 | } |
7664 | ||
7665 | if (badInput) | |
a3f17187 | 7666 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7667 | else |
db107f19 | 7668 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7669 | } |
7670 | ||
7671 | static void | |
fba45db2 | 7672 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7673 | { |
7674 | int badInput = 0; | |
7675 | ||
c5aa993b | 7676 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7677 | badInput = 1; |
7678 | else | |
7679 | { | |
7680 | char *argptr = arg; | |
7681 | int hasColon = 0; | |
7682 | ||
7683 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7684 | it is probably a line number. */ |
c906108c | 7685 | while (*argptr && !hasColon) |
c5aa993b JM |
7686 | { |
7687 | hasColon = (*argptr == ':'); | |
7688 | argptr++; | |
7689 | } | |
c906108c SS |
7690 | |
7691 | if (hasColon) | |
c5aa993b | 7692 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7693 | else |
c5aa993b | 7694 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7695 | } |
7696 | ||
7697 | if (badInput) | |
a3f17187 | 7698 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7699 | else |
db107f19 | 7700 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7701 | } |
7702 | ||
53a5351d JM |
7703 | /* accessflag: hw_write: watch write, |
7704 | hw_read: watch read, | |
7705 | hw_access: watch access (read or write) */ | |
c906108c | 7706 | static void |
fba45db2 | 7707 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7708 | { |
d983da9c | 7709 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 7710 | struct expression *exp; |
60e1c644 | 7711 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
c906108c SS |
7712 | struct value *val, *mark; |
7713 | struct frame_info *frame; | |
c906108c SS |
7714 | char *exp_start = NULL; |
7715 | char *exp_end = NULL; | |
37e4754d | 7716 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7717 | int toklen; |
7718 | char *cond_start = NULL; | |
7719 | char *cond_end = NULL; | |
c906108c SS |
7720 | int i, other_type_used, target_resources_ok = 0; |
7721 | enum bptype bp_type; | |
7722 | int mem_cnt = 0; | |
37e4754d | 7723 | int thread = -1; |
c906108c | 7724 | |
37e4754d LM |
7725 | /* Make sure that we actually have parameters to parse. */ |
7726 | if (arg != NULL && arg[0] != '\0') | |
7727 | { | |
7728 | toklen = strlen (arg); /* Size of argument list. */ | |
7729 | ||
7730 | /* Points tok to the end of the argument list. */ | |
7731 | tok = arg + toklen - 1; | |
7732 | ||
7733 | /* Go backwards in the parameters list. Skip the last parameter. | |
7734 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7735 | be the thread identifier. */ | |
7736 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7737 | tok--; | |
7738 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7739 | tok--; | |
7740 | ||
7741 | /* Points end_tok to the beginning of the last token. */ | |
7742 | id_tok_start = tok + 1; | |
7743 | ||
7744 | /* Go backwards in the parameters list. Skip one more parameter. | |
7745 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7746 | reach a "thread" token. */ | |
7747 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7748 | tok--; | |
7749 | ||
7750 | end_tok = tok; | |
7751 | ||
7752 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7753 | tok--; | |
7754 | ||
7755 | /* Move the pointer forward to skip the whitespace and | |
7756 | calculate the length of the token. */ | |
7757 | tok++; | |
7758 | toklen = end_tok - tok; | |
7759 | ||
7760 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7761 | { | |
7762 | /* At this point we've found a "thread" token, which means | |
7763 | the user is trying to set a watchpoint that triggers | |
7764 | only in a specific thread. */ | |
7765 | char *endp; | |
7766 | ||
7767 | /* Extract the thread ID from the next token. */ | |
7768 | thread = strtol (id_tok_start, &endp, 0); | |
7769 | ||
7770 | /* Check if the user provided a valid numeric value for the | |
7771 | thread ID. */ | |
7772 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7773 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7774 | ||
7775 | /* Check if the thread actually exists. */ | |
7776 | if (!valid_thread_id (thread)) | |
7777 | error (_("Unknown thread %d."), thread); | |
7778 | ||
7779 | /* Truncate the string and get rid of the thread <thread_num> | |
7780 | parameter before the parameter list is parsed by the | |
7781 | evaluate_expression() function. */ | |
7782 | *tok = '\0'; | |
7783 | } | |
7784 | } | |
7785 | ||
7786 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7787 | innermost_block = NULL; |
7788 | exp_start = arg; | |
7789 | exp = parse_exp_1 (&arg, 0, 0); | |
7790 | exp_end = arg; | |
fa8a61dc TT |
7791 | /* Remove trailing whitespace from the expression before saving it. |
7792 | This makes the eventual display of the expression string a bit | |
7793 | prettier. */ | |
7794 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7795 | --exp_end; | |
7796 | ||
c906108c SS |
7797 | exp_valid_block = innermost_block; |
7798 | mark = value_mark (); | |
fa4727a6 DJ |
7799 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7800 | if (val != NULL) | |
7801 | release_value (val); | |
c906108c SS |
7802 | |
7803 | tok = arg; | |
7804 | while (*tok == ' ' || *tok == '\t') | |
7805 | tok++; | |
7806 | end_tok = tok; | |
7807 | ||
7808 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7809 | end_tok++; | |
7810 | ||
7811 | toklen = end_tok - tok; | |
7812 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7813 | { | |
2d134ed3 PA |
7814 | struct expression *cond; |
7815 | ||
60e1c644 | 7816 | innermost_block = NULL; |
c906108c SS |
7817 | tok = cond_start = end_tok + 1; |
7818 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
7819 | |
7820 | /* The watchpoint expression may not be local, but the condition | |
7821 | may still be. E.g.: `watch global if local > 0'. */ | |
7822 | cond_exp_valid_block = innermost_block; | |
7823 | ||
2d134ed3 | 7824 | xfree (cond); |
c906108c SS |
7825 | cond_end = tok; |
7826 | } | |
7827 | if (*tok) | |
8a3fe4f8 | 7828 | error (_("Junk at end of command.")); |
c906108c | 7829 | |
53a5351d | 7830 | if (accessflag == hw_read) |
c5aa993b | 7831 | bp_type = bp_read_watchpoint; |
53a5351d | 7832 | else if (accessflag == hw_access) |
c5aa993b JM |
7833 | bp_type = bp_access_watchpoint; |
7834 | else | |
7835 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
7836 | |
7837 | mem_cnt = can_use_hardware_watchpoint (val); | |
7838 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 7839 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
7840 | if (mem_cnt != 0) |
7841 | { | |
7842 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 7843 | target_resources_ok = |
d92524f1 | 7844 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 7845 | other_type_used); |
c5aa993b | 7846 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7847 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 7848 | |
c5aa993b | 7849 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7850 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 7851 | } |
c906108c | 7852 | |
4d28f7a8 KB |
7853 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
7854 | watchpoint could not be set. */ | |
7855 | if (!mem_cnt || target_resources_ok <= 0) | |
7856 | bp_type = bp_watchpoint; | |
7857 | ||
d983da9c | 7858 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
7859 | |
7860 | /* If the expression is "local", then set up a "watchpoint scope" | |
7861 | breakpoint at the point where we've left the scope of the watchpoint | |
7862 | expression. Create the scope breakpoint before the watchpoint, so | |
7863 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 7864 | if (exp_valid_block && frame) |
d983da9c | 7865 | { |
edb3359d DJ |
7866 | if (frame_id_p (frame_unwind_caller_id (frame))) |
7867 | { | |
7868 | scope_breakpoint | |
a6d9a66e UW |
7869 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
7870 | frame_unwind_caller_pc (frame), | |
edb3359d | 7871 | bp_watchpoint_scope); |
d983da9c | 7872 | |
edb3359d | 7873 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 7874 | |
edb3359d DJ |
7875 | /* Automatically delete the breakpoint when it hits. */ |
7876 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 7877 | |
edb3359d DJ |
7878 | /* Only break in the proper frame (help with recursion). */ |
7879 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 7880 | |
edb3359d | 7881 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
7882 | scope_breakpoint->loc->gdbarch |
7883 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
7884 | scope_breakpoint->loc->requested_address |
7885 | = frame_unwind_caller_pc (frame); | |
7886 | scope_breakpoint->loc->address | |
a6d9a66e UW |
7887 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
7888 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
7889 | scope_breakpoint->type); |
7890 | } | |
d983da9c DJ |
7891 | } |
7892 | ||
c906108c | 7893 | /* Now set up the breakpoint. */ |
2d134ed3 | 7894 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
7895 | set_breakpoint_count (breakpoint_count + 1); |
7896 | b->number = breakpoint_count; | |
37e4754d | 7897 | b->thread = thread; |
b5de0fa7 | 7898 | b->disposition = disp_donttouch; |
c906108c SS |
7899 | b->exp = exp; |
7900 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 7901 | b->cond_exp_valid_block = cond_exp_valid_block; |
c906108c SS |
7902 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
7903 | b->val = val; | |
fa4727a6 | 7904 | b->val_valid = 1; |
c906108c SS |
7905 | if (cond_start) |
7906 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
7907 | else | |
7908 | b->cond_string = 0; | |
c5aa993b | 7909 | |
c906108c | 7910 | if (frame) |
f6bc2008 PA |
7911 | { |
7912 | b->watchpoint_frame = get_frame_id (frame); | |
7913 | b->watchpoint_thread = inferior_ptid; | |
7914 | } | |
c906108c | 7915 | else |
f6bc2008 PA |
7916 | { |
7917 | b->watchpoint_frame = null_frame_id; | |
7918 | b->watchpoint_thread = null_ptid; | |
7919 | } | |
c906108c | 7920 | |
d983da9c | 7921 | if (scope_breakpoint != NULL) |
c906108c | 7922 | { |
d983da9c DJ |
7923 | /* The scope breakpoint is related to the watchpoint. We will |
7924 | need to act on them together. */ | |
7925 | b->related_breakpoint = scope_breakpoint; | |
7926 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 7927 | } |
d983da9c | 7928 | |
c906108c | 7929 | value_free_to_mark (mark); |
2d134ed3 PA |
7930 | |
7931 | /* Finally update the new watchpoint. This creates the locations | |
7932 | that should be inserted. */ | |
7933 | update_watchpoint (b, 1); | |
7934 | ||
c906108c | 7935 | mention (b); |
b60e7edf | 7936 | update_global_location_list (1); |
c906108c SS |
7937 | } |
7938 | ||
7939 | /* Return count of locations need to be watched and can be handled | |
7940 | in hardware. If the watchpoint can not be handled | |
7941 | in hardware return zero. */ | |
7942 | ||
c906108c | 7943 | static int |
fba45db2 | 7944 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
7945 | { |
7946 | int found_memory_cnt = 0; | |
2e70b7b9 | 7947 | struct value *head = v; |
c906108c SS |
7948 | |
7949 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 7950 | if (!can_use_hw_watchpoints) |
c906108c | 7951 | return 0; |
c5aa993b | 7952 | |
5c44784c JM |
7953 | /* Make sure that the value of the expression depends only upon |
7954 | memory contents, and values computed from them within GDB. If we | |
7955 | find any register references or function calls, we can't use a | |
7956 | hardware watchpoint. | |
7957 | ||
7958 | The idea here is that evaluating an expression generates a series | |
7959 | of values, one holding the value of every subexpression. (The | |
7960 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
7961 | a*b+c.) GDB's values hold almost enough information to establish | |
7962 | the criteria given above --- they identify memory lvalues, | |
7963 | register lvalues, computed values, etcetera. So we can evaluate | |
7964 | the expression, and then scan the chain of values that leaves | |
7965 | behind to decide whether we can detect any possible change to the | |
7966 | expression's final value using only hardware watchpoints. | |
7967 | ||
7968 | However, I don't think that the values returned by inferior | |
7969 | function calls are special in any way. So this function may not | |
7970 | notice that an expression involving an inferior function call | |
7971 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 7972 | for (; v; v = value_next (v)) |
c906108c | 7973 | { |
5c44784c | 7974 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 7975 | { |
d69fe07e | 7976 | if (value_lazy (v)) |
5c44784c JM |
7977 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
7978 | we either just used its address (e.g., `a' in `a.b') or | |
7979 | we never needed it at all (e.g., `a' in `a,b'). */ | |
7980 | ; | |
53a5351d | 7981 | else |
5c44784c JM |
7982 | { |
7983 | /* Ahh, memory we actually used! Check if we can cover | |
7984 | it with hardware watchpoints. */ | |
df407dfe | 7985 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
7986 | |
7987 | /* We only watch structs and arrays if user asked for it | |
7988 | explicitly, never if they just happen to appear in a | |
7989 | middle of some value chain. */ | |
7990 | if (v == head | |
7991 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
7992 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
7993 | { | |
42ae5230 | 7994 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 7995 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 7996 | |
d92524f1 | 7997 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
7998 | return 0; |
7999 | else | |
8000 | found_memory_cnt++; | |
8001 | } | |
5c44784c | 8002 | } |
c5aa993b | 8003 | } |
5086187c AC |
8004 | else if (VALUE_LVAL (v) != not_lval |
8005 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 8006 | return 0; /* ??? What does this represent? */ |
5086187c | 8007 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 8008 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
8009 | } |
8010 | ||
8011 | /* The expression itself looks suitable for using a hardware | |
8012 | watchpoint, but give the target machine a chance to reject it. */ | |
8013 | return found_memory_cnt; | |
8014 | } | |
8015 | ||
8b93c638 | 8016 | void |
fba45db2 | 8017 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8018 | { |
8019 | watch_command (arg, from_tty); | |
8020 | } | |
8926118c | 8021 | |
c5aa993b | 8022 | static void |
fba45db2 | 8023 | watch_command (char *arg, int from_tty) |
c906108c | 8024 | { |
53a5351d | 8025 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
8026 | } |
8027 | ||
8b93c638 | 8028 | void |
fba45db2 | 8029 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8030 | { |
8031 | rwatch_command (arg, from_tty); | |
8032 | } | |
8926118c | 8033 | |
c5aa993b | 8034 | static void |
fba45db2 | 8035 | rwatch_command (char *arg, int from_tty) |
c906108c | 8036 | { |
53a5351d | 8037 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
8038 | } |
8039 | ||
8b93c638 | 8040 | void |
fba45db2 | 8041 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8042 | { |
8043 | awatch_command (arg, from_tty); | |
8044 | } | |
8926118c | 8045 | |
c5aa993b | 8046 | static void |
fba45db2 | 8047 | awatch_command (char *arg, int from_tty) |
c906108c | 8048 | { |
53a5351d | 8049 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 8050 | } |
c906108c | 8051 | \f |
c5aa993b | 8052 | |
43ff13b4 | 8053 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8054 | because it uses the mechanisms of breakpoints. */ |
8055 | ||
bfec99b2 PA |
8056 | struct until_break_command_continuation_args |
8057 | { | |
8058 | struct breakpoint *breakpoint; | |
8059 | struct breakpoint *breakpoint2; | |
8060 | }; | |
8061 | ||
43ff13b4 JM |
8062 | /* This function is called by fetch_inferior_event via the |
8063 | cmd_continuation pointer, to complete the until command. It takes | |
8064 | care of cleaning up the temporary breakpoints set up by the until | |
8065 | command. */ | |
c2c6d25f | 8066 | static void |
604ead4a | 8067 | until_break_command_continuation (void *arg) |
43ff13b4 | 8068 | { |
bfec99b2 PA |
8069 | struct until_break_command_continuation_args *a = arg; |
8070 | ||
8071 | delete_breakpoint (a->breakpoint); | |
8072 | if (a->breakpoint2) | |
8073 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
8074 | } |
8075 | ||
c906108c | 8076 | void |
ae66c1fc | 8077 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8078 | { |
8079 | struct symtabs_and_lines sals; | |
8080 | struct symtab_and_line sal; | |
206415a3 | 8081 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8082 | struct breakpoint *breakpoint; |
f107f563 | 8083 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
8084 | struct cleanup *old_chain; |
8085 | ||
8086 | clear_proceed_status (); | |
8087 | ||
8088 | /* Set a breakpoint where the user wants it and at return from | |
8089 | this function */ | |
c5aa993b | 8090 | |
c906108c SS |
8091 | if (default_breakpoint_valid) |
8092 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8093 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8094 | else |
53a5351d | 8095 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8096 | 0, (char ***) NULL, NULL); |
c5aa993b | 8097 | |
c906108c | 8098 | if (sals.nelts != 1) |
8a3fe4f8 | 8099 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8100 | |
c906108c | 8101 | sal = sals.sals[0]; |
b8c9b27d | 8102 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 8103 | |
c906108c | 8104 | if (*arg) |
8a3fe4f8 | 8105 | error (_("Junk at end of arguments.")); |
c5aa993b | 8106 | |
c906108c | 8107 | resolve_sal_pc (&sal); |
c5aa993b | 8108 | |
ae66c1fc EZ |
8109 | if (anywhere) |
8110 | /* If the user told us to continue until a specified location, | |
8111 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8112 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8113 | null_frame_id, bp_until); | |
ae66c1fc | 8114 | else |
edb3359d | 8115 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 8116 | at the very same frame. */ |
a6d9a66e UW |
8117 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8118 | get_stack_frame_id (frame), | |
ae66c1fc | 8119 | bp_until); |
c5aa993b | 8120 | |
f107f563 | 8121 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8122 | |
ae66c1fc EZ |
8123 | /* Keep within the current frame, or in frames called by the current |
8124 | one. */ | |
edb3359d DJ |
8125 | |
8126 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8127 | { |
edb3359d DJ |
8128 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8129 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8130 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8131 | sal, | |
edb3359d | 8132 | frame_unwind_caller_id (frame), |
f107f563 VP |
8133 | bp_until); |
8134 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 8135 | } |
c5aa993b | 8136 | |
c906108c | 8137 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
8138 | |
8139 | /* If we are running asynchronously, and proceed call above has actually | |
8140 | managed to start the target, arrange for breakpoints to be | |
8141 | deleted when the target stops. Otherwise, we're already stopped and | |
8142 | delete breakpoints via cleanup chain. */ | |
8143 | ||
8ea051c5 | 8144 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8145 | { |
bfec99b2 PA |
8146 | struct until_break_command_continuation_args *args; |
8147 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8148 | |
bfec99b2 PA |
8149 | args->breakpoint = breakpoint; |
8150 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
8151 | |
8152 | discard_cleanups (old_chain); | |
95e54da7 PA |
8153 | add_continuation (inferior_thread (), |
8154 | until_break_command_continuation, args, | |
604ead4a | 8155 | xfree); |
f107f563 VP |
8156 | } |
8157 | else | |
c5aa993b | 8158 | do_cleanups (old_chain); |
c906108c | 8159 | } |
ae66c1fc | 8160 | |
c906108c | 8161 | static void |
fba45db2 | 8162 | ep_skip_leading_whitespace (char **s) |
c906108c | 8163 | { |
c5aa993b JM |
8164 | if ((s == NULL) || (*s == NULL)) |
8165 | return; | |
8166 | while (isspace (**s)) | |
8167 | *s += 1; | |
c906108c | 8168 | } |
c5aa993b | 8169 | |
c906108c SS |
8170 | /* This function attempts to parse an optional "if <cond>" clause |
8171 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8172 | |
c906108c SS |
8173 | Else, it returns a pointer to the condition string. (It does not |
8174 | attempt to evaluate the string against a particular block.) And, | |
8175 | it updates arg to point to the first character following the parsed | |
8176 | if clause in the arg string. */ | |
53a5351d | 8177 | |
c906108c | 8178 | static char * |
fba45db2 | 8179 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8180 | { |
c5aa993b JM |
8181 | char *cond_string; |
8182 | ||
8183 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8184 | return NULL; |
c5aa993b | 8185 | |
c906108c SS |
8186 | /* Skip the "if" keyword. */ |
8187 | (*arg) += 2; | |
c5aa993b | 8188 | |
c906108c SS |
8189 | /* Skip any extra leading whitespace, and record the start of the |
8190 | condition string. */ | |
8191 | ep_skip_leading_whitespace (arg); | |
8192 | cond_string = *arg; | |
c5aa993b | 8193 | |
c906108c SS |
8194 | /* Assume that the condition occupies the remainder of the arg string. */ |
8195 | (*arg) += strlen (cond_string); | |
c5aa993b | 8196 | |
c906108c SS |
8197 | return cond_string; |
8198 | } | |
c5aa993b | 8199 | |
c906108c SS |
8200 | /* Commands to deal with catching events, such as signals, exceptions, |
8201 | process start/exit, etc. */ | |
c5aa993b JM |
8202 | |
8203 | typedef enum | |
8204 | { | |
44feb3ce TT |
8205 | catch_fork_temporary, catch_vfork_temporary, |
8206 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8207 | } |
8208 | catch_fork_kind; | |
8209 | ||
c906108c | 8210 | static void |
cc59ec59 MS |
8211 | catch_fork_command_1 (char *arg, int from_tty, |
8212 | struct cmd_list_element *command) | |
c906108c | 8213 | { |
a6d9a66e | 8214 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8215 | char *cond_string = NULL; |
44feb3ce TT |
8216 | catch_fork_kind fork_kind; |
8217 | int tempflag; | |
8218 | ||
8219 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8220 | tempflag = (fork_kind == catch_fork_temporary | |
8221 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8222 | |
44feb3ce TT |
8223 | if (!arg) |
8224 | arg = ""; | |
c906108c | 8225 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8226 | |
c906108c | 8227 | /* The allowed syntax is: |
c5aa993b JM |
8228 | catch [v]fork |
8229 | catch [v]fork if <cond> | |
8230 | ||
c906108c SS |
8231 | First, check if there's an if clause. */ |
8232 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 8233 | |
c906108c | 8234 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8235 | error (_("Junk at end of arguments.")); |
c5aa993b | 8236 | |
c906108c SS |
8237 | /* If this target supports it, create a fork or vfork catchpoint |
8238 | and enable reporting of such events. */ | |
c5aa993b JM |
8239 | switch (fork_kind) |
8240 | { | |
44feb3ce TT |
8241 | case catch_fork_temporary: |
8242 | case catch_fork_permanent: | |
a6d9a66e | 8243 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8244 | &catch_fork_breakpoint_ops); |
c906108c | 8245 | break; |
44feb3ce TT |
8246 | case catch_vfork_temporary: |
8247 | case catch_vfork_permanent: | |
a6d9a66e | 8248 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8249 | &catch_vfork_breakpoint_ops); |
c906108c | 8250 | break; |
c5aa993b | 8251 | default: |
8a3fe4f8 | 8252 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8253 | break; |
c5aa993b | 8254 | } |
c906108c SS |
8255 | } |
8256 | ||
8257 | static void | |
cc59ec59 MS |
8258 | catch_exec_command_1 (char *arg, int from_tty, |
8259 | struct cmd_list_element *command) | |
c906108c | 8260 | { |
a6d9a66e | 8261 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8262 | int tempflag; |
c5aa993b | 8263 | char *cond_string = NULL; |
c906108c | 8264 | |
44feb3ce TT |
8265 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8266 | ||
8267 | if (!arg) | |
8268 | arg = ""; | |
c906108c SS |
8269 | ep_skip_leading_whitespace (&arg); |
8270 | ||
8271 | /* The allowed syntax is: | |
c5aa993b JM |
8272 | catch exec |
8273 | catch exec if <cond> | |
c906108c SS |
8274 | |
8275 | First, check if there's an if clause. */ | |
8276 | cond_string = ep_parse_optional_if_clause (&arg); | |
8277 | ||
8278 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8279 | error (_("Junk at end of arguments.")); |
c906108c SS |
8280 | |
8281 | /* If this target supports it, create an exec catchpoint | |
8282 | and enable reporting of such events. */ | |
a6d9a66e UW |
8283 | create_catchpoint (gdbarch, tempflag, cond_string, |
8284 | &catch_exec_breakpoint_ops); | |
c906108c | 8285 | } |
c5aa993b | 8286 | |
3086aeae DJ |
8287 | static enum print_stop_action |
8288 | print_exception_catchpoint (struct breakpoint *b) | |
8289 | { | |
ade92717 | 8290 | int bp_temp, bp_throw; |
3086aeae | 8291 | |
ade92717 | 8292 | annotate_catchpoint (b->number); |
3086aeae | 8293 | |
ade92717 AR |
8294 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8295 | if (b->loc->address != b->loc->requested_address) | |
8296 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8297 | b->loc->address, | |
8298 | b->number, 1); | |
df2b6d2d | 8299 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8300 | ui_out_text (uiout, |
8301 | bp_temp ? "Temporary catchpoint " | |
8302 | : "Catchpoint "); | |
8303 | if (!ui_out_is_mi_like_p (uiout)) | |
8304 | ui_out_field_int (uiout, "bkptno", b->number); | |
8305 | ui_out_text (uiout, | |
c0b37c48 AR |
8306 | bp_throw ? " (exception thrown), " |
8307 | : " (exception caught), "); | |
ade92717 AR |
8308 | if (ui_out_is_mi_like_p (uiout)) |
8309 | { | |
8310 | ui_out_field_string (uiout, "reason", | |
8311 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8312 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8313 | ui_out_field_int (uiout, "bkptno", b->number); | |
8314 | } | |
3086aeae DJ |
8315 | return PRINT_SRC_AND_LOC; |
8316 | } | |
8317 | ||
8318 | static void | |
cc59ec59 MS |
8319 | print_one_exception_catchpoint (struct breakpoint *b, |
8320 | struct bp_location **last_loc) | |
3086aeae | 8321 | { |
79a45b7d | 8322 | struct value_print_options opts; |
cc59ec59 | 8323 | |
79a45b7d TT |
8324 | get_user_print_options (&opts); |
8325 | if (opts.addressprint) | |
3086aeae DJ |
8326 | { |
8327 | annotate_field (4); | |
604133b5 AR |
8328 | if (b->loc == NULL || b->loc->shlib_disabled) |
8329 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8330 | else | |
5af949e3 UW |
8331 | ui_out_field_core_addr (uiout, "addr", |
8332 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8333 | } |
8334 | annotate_field (5); | |
604133b5 | 8335 | if (b->loc) |
a6d9a66e | 8336 | *last_loc = b->loc; |
3086aeae DJ |
8337 | if (strstr (b->addr_string, "throw") != NULL) |
8338 | ui_out_field_string (uiout, "what", "exception throw"); | |
8339 | else | |
8340 | ui_out_field_string (uiout, "what", "exception catch"); | |
8341 | } | |
8342 | ||
8343 | static void | |
8344 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8345 | { | |
ade92717 AR |
8346 | int bp_temp; |
8347 | int bp_throw; | |
8348 | ||
df2b6d2d | 8349 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8350 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8351 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8352 | : _("Catchpoint ")); | |
8353 | ui_out_field_int (uiout, "bkptno", b->number); | |
8354 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8355 | : _(" (catch)")); | |
3086aeae DJ |
8356 | } |
8357 | ||
6149aea9 PA |
8358 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8359 | catch catchpoints. */ | |
8360 | ||
8361 | static void | |
8362 | print_recreate_exception_catchpoint (struct breakpoint *b, struct ui_file *fp) | |
8363 | { | |
8364 | int bp_temp; | |
8365 | int bp_throw; | |
8366 | ||
8367 | bp_temp = b->disposition == disp_del; | |
8368 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8369 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8370 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8371 | } | |
8372 | ||
3086aeae | 8373 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8374 | NULL, /* insert */ |
8375 | NULL, /* remove */ | |
8376 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8377 | print_exception_catchpoint, |
8378 | print_one_exception_catchpoint, | |
6149aea9 PA |
8379 | print_mention_exception_catchpoint, |
8380 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8381 | }; |
8382 | ||
8383 | static int | |
8384 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8385 | enum exception_event_kind ex_event, int from_tty) | |
8386 | { | |
604133b5 AR |
8387 | char *trigger_func_name; |
8388 | ||
3086aeae | 8389 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8390 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8391 | else |
604133b5 | 8392 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8393 | |
8cdf0e15 VP |
8394 | create_breakpoint (get_current_arch (), |
8395 | trigger_func_name, cond_string, -1, | |
8396 | 0 /* condition and thread are valid. */, | |
8397 | tempflag, 0, 0, | |
8398 | 0, | |
8399 | AUTO_BOOLEAN_TRUE /* pending */, | |
8400 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
8401 | 1 /* enabled */); | |
3086aeae | 8402 | |
3086aeae DJ |
8403 | return 1; |
8404 | } | |
8405 | ||
c5aa993b | 8406 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
8407 | |
8408 | static void | |
fba45db2 KB |
8409 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8410 | int tempflag, int from_tty) | |
c906108c | 8411 | { |
c5aa993b | 8412 | char *cond_string = NULL; |
c5aa993b | 8413 | |
44feb3ce TT |
8414 | if (!arg) |
8415 | arg = ""; | |
c906108c | 8416 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8417 | |
c906108c SS |
8418 | cond_string = ep_parse_optional_if_clause (&arg); |
8419 | ||
8420 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8421 | error (_("Junk at end of arguments.")); |
c906108c | 8422 | |
059fb39f PM |
8423 | if (ex_event != EX_EVENT_THROW |
8424 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 8425 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 8426 | |
3086aeae DJ |
8427 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
8428 | return; | |
8429 | ||
8a3fe4f8 | 8430 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
8431 | } |
8432 | ||
44feb3ce TT |
8433 | /* Implementation of "catch catch" command. */ |
8434 | ||
8435 | static void | |
8436 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8437 | { | |
8438 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8439 | |
44feb3ce TT |
8440 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
8441 | } | |
8442 | ||
8443 | /* Implementation of "catch throw" command. */ | |
8444 | ||
8445 | static void | |
8446 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8447 | { | |
8448 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8449 | |
44feb3ce TT |
8450 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
8451 | } | |
8452 | ||
f7f9143b JB |
8453 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8454 | ||
8455 | static void | |
a6d9a66e UW |
8456 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8457 | struct symtab_and_line sal, | |
f7f9143b JB |
8458 | char *addr_string, |
8459 | char *exp_string, | |
8460 | char *cond_string, | |
8461 | struct expression *cond, | |
8462 | struct breakpoint_ops *ops, | |
8463 | int tempflag, | |
8464 | int from_tty) | |
8465 | { | |
8466 | struct breakpoint *b; | |
8467 | ||
8468 | if (from_tty) | |
8469 | { | |
5af949e3 UW |
8470 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8471 | if (!loc_gdbarch) | |
8472 | loc_gdbarch = gdbarch; | |
8473 | ||
6c95b8df PA |
8474 | describe_other_breakpoints (loc_gdbarch, |
8475 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8476 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8477 | version for exception catchpoints, because two catchpoints | |
8478 | used for different exception names will use the same address. | |
8479 | In this case, a "breakpoint ... also set at..." warning is | |
8480 | unproductive. Besides. the warning phrasing is also a bit | |
8481 | inapropriate, we should use the word catchpoint, and tell | |
8482 | the user what type of catchpoint it is. The above is good | |
8483 | enough for now, though. */ | |
8484 | } | |
8485 | ||
a6d9a66e | 8486 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8487 | set_breakpoint_count (breakpoint_count + 1); |
8488 | ||
8489 | b->enable_state = bp_enabled; | |
8490 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8491 | b->number = breakpoint_count; | |
8492 | b->ignore_count = 0; | |
511a6cd4 | 8493 | b->loc->cond = cond; |
f7f9143b JB |
8494 | b->addr_string = addr_string; |
8495 | b->language = language_ada; | |
8496 | b->cond_string = cond_string; | |
8497 | b->exp_string = exp_string; | |
8498 | b->thread = -1; | |
8499 | b->ops = ops; | |
f7f9143b JB |
8500 | |
8501 | mention (b); | |
b60e7edf | 8502 | update_global_location_list (1); |
f7f9143b JB |
8503 | } |
8504 | ||
8505 | /* Implement the "catch exception" command. */ | |
8506 | ||
8507 | static void | |
44feb3ce TT |
8508 | catch_ada_exception_command (char *arg, int from_tty, |
8509 | struct cmd_list_element *command) | |
f7f9143b | 8510 | { |
a6d9a66e | 8511 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8512 | int tempflag; |
f7f9143b | 8513 | struct symtab_and_line sal; |
f7f9143b JB |
8514 | char *addr_string = NULL; |
8515 | char *exp_string = NULL; | |
8516 | char *cond_string = NULL; | |
8517 | struct expression *cond = NULL; | |
8518 | struct breakpoint_ops *ops = NULL; | |
8519 | ||
44feb3ce TT |
8520 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8521 | ||
8522 | if (!arg) | |
8523 | arg = ""; | |
f7f9143b JB |
8524 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
8525 | &cond_string, &cond, &ops); | |
a6d9a66e | 8526 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
8527 | cond_string, cond, ops, tempflag, |
8528 | from_tty); | |
8529 | } | |
8530 | ||
a96d9b2e SDJ |
8531 | /* Cleanup function for a syscall filter list. */ |
8532 | static void | |
8533 | clean_up_filters (void *arg) | |
8534 | { | |
8535 | VEC(int) *iter = *(VEC(int) **) arg; | |
8536 | VEC_free (int, iter); | |
8537 | } | |
8538 | ||
8539 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8540 | filter list, or NULL if no filtering is required. */ | |
8541 | static VEC(int) * | |
8542 | catch_syscall_split_args (char *arg) | |
8543 | { | |
8544 | VEC(int) *result = NULL; | |
8545 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8546 | ||
8547 | while (*arg != '\0') | |
8548 | { | |
8549 | int i, syscall_number; | |
8550 | char *endptr; | |
8551 | char cur_name[128]; | |
8552 | struct syscall s; | |
8553 | ||
8554 | /* Skip whitespace. */ | |
8555 | while (isspace (*arg)) | |
8556 | arg++; | |
8557 | ||
8558 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8559 | cur_name[i] = arg[i]; | |
8560 | cur_name[i] = '\0'; | |
8561 | arg += i; | |
8562 | ||
8563 | /* Check if the user provided a syscall name or a number. */ | |
8564 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8565 | if (*endptr == '\0') | |
bccd0dd2 | 8566 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8567 | else |
8568 | { | |
8569 | /* We have a name. Let's check if it's valid and convert it | |
8570 | to a number. */ | |
8571 | get_syscall_by_name (cur_name, &s); | |
8572 | ||
8573 | if (s.number == UNKNOWN_SYSCALL) | |
8574 | /* Here we have to issue an error instead of a warning, because | |
8575 | GDB cannot do anything useful if there's no syscall number to | |
8576 | be caught. */ | |
8577 | error (_("Unknown syscall name '%s'."), cur_name); | |
8578 | } | |
8579 | ||
8580 | /* Ok, it's valid. */ | |
8581 | VEC_safe_push (int, result, s.number); | |
8582 | } | |
8583 | ||
8584 | discard_cleanups (cleanup); | |
8585 | return result; | |
8586 | } | |
8587 | ||
8588 | /* Implement the "catch syscall" command. */ | |
8589 | ||
8590 | static void | |
cc59ec59 MS |
8591 | catch_syscall_command_1 (char *arg, int from_tty, |
8592 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
8593 | { |
8594 | int tempflag; | |
8595 | VEC(int) *filter; | |
8596 | struct syscall s; | |
8597 | struct gdbarch *gdbarch = get_current_arch (); | |
8598 | ||
8599 | /* Checking if the feature if supported. */ | |
8600 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8601 | error (_("The feature 'catch syscall' is not supported on \ | |
8602 | this architeture yet.")); | |
8603 | ||
8604 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8605 | ||
8606 | ep_skip_leading_whitespace (&arg); | |
8607 | ||
8608 | /* We need to do this first "dummy" translation in order | |
8609 | to get the syscall XML file loaded or, most important, | |
8610 | to display a warning to the user if there's no XML file | |
8611 | for his/her architecture. */ | |
8612 | get_syscall_by_number (0, &s); | |
8613 | ||
8614 | /* The allowed syntax is: | |
8615 | catch syscall | |
8616 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8617 | ||
8618 | Let's check if there's a syscall name. */ | |
8619 | ||
8620 | if (arg != NULL) | |
8621 | filter = catch_syscall_split_args (arg); | |
8622 | else | |
8623 | filter = NULL; | |
8624 | ||
8625 | create_syscall_event_catchpoint (tempflag, filter, | |
8626 | &catch_syscall_breakpoint_ops); | |
8627 | } | |
8628 | ||
f7f9143b JB |
8629 | /* Implement the "catch assert" command. */ |
8630 | ||
8631 | static void | |
44feb3ce | 8632 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8633 | { |
a6d9a66e | 8634 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8635 | int tempflag; |
f7f9143b JB |
8636 | struct symtab_and_line sal; |
8637 | char *addr_string = NULL; | |
8638 | struct breakpoint_ops *ops = NULL; | |
8639 | ||
44feb3ce TT |
8640 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8641 | ||
8642 | if (!arg) | |
8643 | arg = ""; | |
f7f9143b | 8644 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8645 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8646 | ops, tempflag, from_tty); | |
f7f9143b JB |
8647 | } |
8648 | ||
c906108c | 8649 | static void |
fba45db2 | 8650 | catch_command (char *arg, int from_tty) |
c906108c | 8651 | { |
44feb3ce | 8652 | error (_("Catch requires an event name.")); |
c906108c SS |
8653 | } |
8654 | \f | |
8655 | ||
8656 | static void | |
fba45db2 | 8657 | tcatch_command (char *arg, int from_tty) |
c906108c | 8658 | { |
44feb3ce | 8659 | error (_("Catch requires an event name.")); |
c906108c SS |
8660 | } |
8661 | ||
80f8a6eb | 8662 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8663 | |
8664 | static void | |
fba45db2 | 8665 | clear_command (char *arg, int from_tty) |
c906108c | 8666 | { |
d6e956e5 VP |
8667 | struct breakpoint *b; |
8668 | VEC(breakpoint_p) *found = 0; | |
8669 | int ix; | |
c906108c SS |
8670 | int default_match; |
8671 | struct symtabs_and_lines sals; | |
8672 | struct symtab_and_line sal; | |
c906108c SS |
8673 | int i; |
8674 | ||
8675 | if (arg) | |
8676 | { | |
8677 | sals = decode_line_spec (arg, 1); | |
8678 | default_match = 0; | |
8679 | } | |
8680 | else | |
8681 | { | |
c5aa993b | 8682 | sals.sals = (struct symtab_and_line *) |
c906108c | 8683 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8684 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8685 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8686 | sal.line = default_breakpoint_line; |
8687 | sal.symtab = default_breakpoint_symtab; | |
8688 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8689 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8690 | if (sal.symtab == 0) |
8a3fe4f8 | 8691 | error (_("No source file specified.")); |
c906108c SS |
8692 | |
8693 | sals.sals[0] = sal; | |
8694 | sals.nelts = 1; | |
8695 | ||
8696 | default_match = 1; | |
8697 | } | |
8698 | ||
ed0616c6 VP |
8699 | /* We don't call resolve_sal_pc here. That's not |
8700 | as bad as it seems, because all existing breakpoints | |
8701 | typically have both file/line and pc set. So, if | |
8702 | clear is given file/line, we can match this to existing | |
8703 | breakpoint without obtaining pc at all. | |
8704 | ||
8705 | We only support clearing given the address explicitly | |
8706 | present in breakpoint table. Say, we've set breakpoint | |
8707 | at file:line. There were several PC values for that file:line, | |
8708 | due to optimization, all in one block. | |
8709 | We've picked one PC value. If "clear" is issued with another | |
8710 | PC corresponding to the same file:line, the breakpoint won't | |
8711 | be cleared. We probably can still clear the breakpoint, but | |
8712 | since the other PC value is never presented to user, user | |
8713 | can only find it by guessing, and it does not seem important | |
8714 | to support that. */ | |
8715 | ||
c906108c | 8716 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8717 | to it. Do it in two passes, solely to preserve the current |
8718 | behavior that from_tty is forced true if we delete more than | |
8719 | one breakpoint. */ | |
c906108c | 8720 | |
80f8a6eb | 8721 | found = NULL; |
c906108c SS |
8722 | for (i = 0; i < sals.nelts; i++) |
8723 | { | |
8724 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8725 | If line given (pc == 0), clear all bpts on specified line. |
8726 | If defaulting, clear all bpts on default line | |
c906108c | 8727 | or at default pc. |
c5aa993b JM |
8728 | |
8729 | defaulting sal.pc != 0 tests to do | |
8730 | ||
8731 | 0 1 pc | |
8732 | 1 1 pc _and_ line | |
8733 | 0 0 line | |
8734 | 1 0 <can't happen> */ | |
c906108c SS |
8735 | |
8736 | sal = sals.sals[i]; | |
c906108c | 8737 | |
d6e956e5 VP |
8738 | /* Find all matching breakpoints and add them to |
8739 | 'found'. */ | |
8740 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8741 | { |
0d381245 | 8742 | int match = 0; |
80f8a6eb | 8743 | /* Are we going to delete b? */ |
cc60f2e3 | 8744 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
8745 | { |
8746 | struct bp_location *loc = b->loc; | |
8747 | for (; loc; loc = loc->next) | |
8748 | { | |
6c95b8df PA |
8749 | int pc_match = sal.pc |
8750 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8751 | && (loc->address == sal.pc) |
8752 | && (!section_is_overlay (loc->section) | |
8753 | || loc->section == sal.section); | |
8754 | int line_match = ((default_match || (0 == sal.pc)) | |
8755 | && b->source_file != NULL | |
8756 | && sal.symtab != NULL | |
6c95b8df | 8757 | && sal.pspace == loc->pspace |
0d381245 VP |
8758 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8759 | && b->line_number == sal.line); | |
8760 | if (pc_match || line_match) | |
8761 | { | |
8762 | match = 1; | |
8763 | break; | |
8764 | } | |
8765 | } | |
8766 | } | |
8767 | ||
8768 | if (match) | |
d6e956e5 | 8769 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8770 | } |
80f8a6eb MS |
8771 | } |
8772 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8773 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8774 | { |
8775 | if (arg) | |
8a3fe4f8 | 8776 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8777 | else |
8a3fe4f8 | 8778 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8779 | } |
c906108c | 8780 | |
d6e956e5 | 8781 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8782 | from_tty = 1; /* Always report if deleted more than one */ |
8783 | if (from_tty) | |
a3f17187 | 8784 | { |
d6e956e5 | 8785 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8786 | printf_unfiltered (_("Deleted breakpoint ")); |
8787 | else | |
8788 | printf_unfiltered (_("Deleted breakpoints ")); | |
8789 | } | |
80f8a6eb | 8790 | breakpoints_changed (); |
d6e956e5 VP |
8791 | |
8792 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8793 | { |
c5aa993b | 8794 | if (from_tty) |
d6e956e5 VP |
8795 | printf_unfiltered ("%d ", b->number); |
8796 | delete_breakpoint (b); | |
c906108c | 8797 | } |
80f8a6eb MS |
8798 | if (from_tty) |
8799 | putchar_unfiltered ('\n'); | |
c906108c SS |
8800 | } |
8801 | \f | |
8802 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8803 | all breakpoints that are marked for deletion, whether hit or not. | |
8804 | This is called after any breakpoint is hit, or after errors. */ | |
8805 | ||
8806 | void | |
fba45db2 | 8807 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8808 | { |
8809 | struct breakpoint *b, *temp; | |
8810 | ||
8811 | for (; bs; bs = bs->next) | |
20874c92 VP |
8812 | if (bs->breakpoint_at |
8813 | && bs->breakpoint_at->owner | |
8814 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 8815 | && bs->stop) |
4f8d1dc6 | 8816 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
8817 | |
8818 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8819 | { |
b5de0fa7 | 8820 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
8821 | delete_breakpoint (b); |
8822 | } | |
c906108c SS |
8823 | } |
8824 | ||
494cfb0f | 8825 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
8826 | Sort elements primarily by their ADDRESS (no matter what does |
8827 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
8828 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
8829 | is sorted stable way despite qsort being an instable algorithm. */ | |
8830 | ||
8831 | static int | |
494cfb0f | 8832 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 8833 | { |
494cfb0f JK |
8834 | struct bp_location *a = *(void **) ap; |
8835 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
8836 | int a_perm = a->owner->enable_state == bp_permanent; |
8837 | int b_perm = b->owner->enable_state == bp_permanent; | |
8838 | ||
8839 | if (a->address != b->address) | |
8840 | return (a->address > b->address) - (a->address < b->address); | |
8841 | ||
8842 | /* Sort permanent breakpoints first. */ | |
8843 | if (a_perm != b_perm) | |
8844 | return (a_perm < b_perm) - (a_perm > b_perm); | |
8845 | ||
8846 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
8847 | breakpoint can be sorted in arbitrary order. */ | |
8848 | ||
8849 | if (a->owner->number != b->owner->number) | |
8850 | return (a->owner->number > b->owner->number) | |
8851 | - (a->owner->number < b->owner->number); | |
8852 | ||
8853 | return (a > b) - (a < b); | |
8854 | } | |
8855 | ||
876fa593 JK |
8856 | /* Set bp_location_placed_address_before_address_max and |
8857 | bp_location_shadow_len_after_address_max according to the current content of | |
8858 | the bp_location array. */ | |
f7545552 TT |
8859 | |
8860 | static void | |
876fa593 | 8861 | bp_location_target_extensions_update (void) |
f7545552 | 8862 | { |
876fa593 JK |
8863 | struct bp_location *bl, **blp_tmp; |
8864 | ||
8865 | bp_location_placed_address_before_address_max = 0; | |
8866 | bp_location_shadow_len_after_address_max = 0; | |
8867 | ||
8868 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
8869 | { | |
8870 | CORE_ADDR start, end, addr; | |
8871 | ||
8872 | if (!bp_location_has_shadow (bl)) | |
8873 | continue; | |
8874 | ||
8875 | start = bl->target_info.placed_address; | |
8876 | end = start + bl->target_info.shadow_len; | |
8877 | ||
8878 | gdb_assert (bl->address >= start); | |
8879 | addr = bl->address - start; | |
8880 | if (addr > bp_location_placed_address_before_address_max) | |
8881 | bp_location_placed_address_before_address_max = addr; | |
8882 | ||
8883 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
8884 | ||
8885 | gdb_assert (bl->address < end); | |
8886 | addr = end - bl->address; | |
8887 | if (addr > bp_location_shadow_len_after_address_max) | |
8888 | bp_location_shadow_len_after_address_max = addr; | |
8889 | } | |
f7545552 TT |
8890 | } |
8891 | ||
4cd9bd08 | 8892 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
8893 | into the inferior, only remove already-inserted locations that no |
8894 | longer should be inserted. Functions that delete a breakpoint or | |
8895 | breakpoints should pass false, so that deleting a breakpoint | |
8896 | doesn't have the side effect of inserting the locations of other | |
8897 | breakpoints that are marked not-inserted, but should_be_inserted | |
8898 | returns true on them. | |
8899 | ||
8900 | This behaviour is useful is situations close to tear-down -- e.g., | |
8901 | after an exec, while the target still has execution, but breakpoint | |
8902 | shadows of the previous executable image should *NOT* be restored | |
8903 | to the new image; or before detaching, where the target still has | |
8904 | execution and wants to delete breakpoints from GDB's lists, and all | |
8905 | breakpoints had already been removed from the inferior. */ | |
8906 | ||
0d381245 | 8907 | static void |
b60e7edf | 8908 | update_global_location_list (int should_insert) |
0d381245 | 8909 | { |
74960c60 | 8910 | struct breakpoint *b; |
876fa593 | 8911 | struct bp_location **locp, *loc; |
f7545552 TT |
8912 | struct cleanup *cleanups; |
8913 | ||
2d134ed3 PA |
8914 | /* Used in the duplicates detection below. When iterating over all |
8915 | bp_locations, points to the first bp_location of a given address. | |
8916 | Breakpoints and watchpoints of different types are never | |
8917 | duplicates of each other. Keep one pointer for each type of | |
8918 | breakpoint/watchpoint, so we only need to loop over all locations | |
8919 | once. */ | |
8920 | struct bp_location *bp_loc_first; /* breakpoint */ | |
8921 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
8922 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
8923 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
8924 | |
8925 | /* Saved former bp_location array which we compare against the newly built | |
8926 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
8927 | struct bp_location **old_location, **old_locp; | |
8928 | unsigned old_location_count; | |
8929 | ||
8930 | old_location = bp_location; | |
8931 | old_location_count = bp_location_count; | |
8932 | bp_location = NULL; | |
8933 | bp_location_count = 0; | |
8934 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 8935 | |
74960c60 | 8936 | ALL_BREAKPOINTS (b) |
876fa593 JK |
8937 | for (loc = b->loc; loc; loc = loc->next) |
8938 | bp_location_count++; | |
8939 | ||
8940 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
8941 | locp = bp_location; | |
8942 | ALL_BREAKPOINTS (b) | |
8943 | for (loc = b->loc; loc; loc = loc->next) | |
8944 | *locp++ = loc; | |
8945 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 8946 | bp_location_compare); |
876fa593 JK |
8947 | |
8948 | bp_location_target_extensions_update (); | |
74960c60 VP |
8949 | |
8950 | /* Identify bp_location instances that are no longer present in the new | |
8951 | list, and therefore should be freed. Note that it's not necessary that | |
8952 | those locations should be removed from inferior -- if there's another | |
8953 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
8954 | we don't need to remove/insert the location. |
8955 | ||
8956 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
8957 | former bp_location array state respectively. */ | |
8958 | ||
8959 | locp = bp_location; | |
8960 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
8961 | old_locp++) | |
74960c60 | 8962 | { |
876fa593 | 8963 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 8964 | struct bp_location **loc2p; |
876fa593 JK |
8965 | |
8966 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 8967 | have to free it. */ |
c7d46a38 | 8968 | int found_object = 0; |
20874c92 VP |
8969 | /* Tells if the location should remain inserted in the target. */ |
8970 | int keep_in_target = 0; | |
8971 | int removed = 0; | |
876fa593 JK |
8972 | |
8973 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
8974 | at or being the one matching OLD_LOC. */ | |
8975 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 8976 | && (*locp)->address < old_loc->address) |
876fa593 | 8977 | locp++; |
c7d46a38 PA |
8978 | |
8979 | for (loc2p = locp; | |
8980 | (loc2p < bp_location + bp_location_count | |
8981 | && (*loc2p)->address == old_loc->address); | |
8982 | loc2p++) | |
8983 | { | |
8984 | if (*loc2p == old_loc) | |
8985 | { | |
8986 | found_object = 1; | |
8987 | break; | |
8988 | } | |
8989 | } | |
74960c60 VP |
8990 | |
8991 | /* If this location is no longer present, and inserted, look if there's | |
8992 | maybe a new location at the same address. If so, mark that one | |
8993 | inserted, and don't remove this one. This is needed so that we | |
8994 | don't have a time window where a breakpoint at certain location is not | |
8995 | inserted. */ | |
8996 | ||
876fa593 | 8997 | if (old_loc->inserted) |
0d381245 | 8998 | { |
74960c60 | 8999 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 9000 | |
876fa593 | 9001 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
9002 | { |
9003 | /* The location is still present in the location list, and still | |
9004 | should be inserted. Don't do anything. */ | |
20874c92 | 9005 | keep_in_target = 1; |
74960c60 VP |
9006 | } |
9007 | else | |
9008 | { | |
9009 | /* The location is either no longer present, or got disabled. | |
9010 | See if there's another location at the same address, in which | |
9011 | case we don't need to remove this one from the target. */ | |
876fa593 JK |
9012 | |
9013 | if (breakpoint_address_is_meaningful (old_loc->owner)) | |
9014 | { | |
876fa593 | 9015 | for (loc2p = locp; |
c7d46a38 PA |
9016 | (loc2p < bp_location + bp_location_count |
9017 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9018 | loc2p++) |
9019 | { | |
9020 | struct bp_location *loc2 = *loc2p; | |
9021 | ||
2d134ed3 | 9022 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9023 | { |
9024 | /* For the sake of should_be_inserted. | |
9025 | Duplicates check below will fix up this later. */ | |
9026 | loc2->duplicate = 0; | |
85d721b8 PA |
9027 | |
9028 | /* Read watchpoint locations are switched to | |
9029 | access watchpoints, if the former are not | |
9030 | supported, but the latter are. */ | |
9031 | if (is_hardware_watchpoint (old_loc->owner)) | |
9032 | { | |
9033 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9034 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9035 | } | |
9036 | ||
c7d46a38 PA |
9037 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9038 | { | |
9039 | loc2->inserted = 1; | |
9040 | loc2->target_info = old_loc->target_info; | |
9041 | keep_in_target = 1; | |
9042 | break; | |
9043 | } | |
876fa593 JK |
9044 | } |
9045 | } | |
9046 | } | |
74960c60 VP |
9047 | } |
9048 | ||
20874c92 VP |
9049 | if (!keep_in_target) |
9050 | { | |
876fa593 | 9051 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
9052 | { |
9053 | /* This is just about all we can do. We could keep this | |
9054 | location on the global list, and try to remove it next | |
9055 | time, but there's no particular reason why we will | |
9056 | succeed next time. | |
9057 | ||
876fa593 | 9058 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
9059 | as delete_breakpoint frees the breakpoint only |
9060 | after calling us. */ | |
9061 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 9062 | old_loc->owner->number); |
20874c92 VP |
9063 | } |
9064 | removed = 1; | |
9065 | } | |
0d381245 | 9066 | } |
74960c60 VP |
9067 | |
9068 | if (!found_object) | |
1c5cfe86 | 9069 | { |
db82e815 PA |
9070 | if (removed && non_stop |
9071 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9072 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9073 | { |
db82e815 PA |
9074 | /* This location was removed from the target. In |
9075 | non-stop mode, a race condition is possible where | |
9076 | we've removed a breakpoint, but stop events for that | |
9077 | breakpoint are already queued and will arrive later. | |
9078 | We apply an heuristic to be able to distinguish such | |
9079 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9080 | breakpoint location for a bit, and will retire it | |
9081 | after we see some number of events. The theory here | |
9082 | is that reporting of events should, "on the average", | |
9083 | be fair, so after a while we'll see events from all | |
9084 | threads that have anything of interest, and no longer | |
9085 | need to keep this breakpoint location around. We | |
9086 | don't hold locations forever so to reduce chances of | |
9087 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9088 | SIGTRAP. | |
9089 | ||
9090 | The heuristic failing can be disastrous on | |
9091 | decr_pc_after_break targets. | |
9092 | ||
9093 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9094 | if we fail to recognize a late breakpoint SIGTRAP, | |
9095 | because events_till_retirement has reached 0 too | |
9096 | soon, we'll fail to do the PC adjustment, and report | |
9097 | a random SIGTRAP to the user. When the user resumes | |
9098 | the inferior, it will most likely immediately crash | |
9099 | with SIGILL/SIGBUS/SEGSEGV, or worse, get silently | |
9100 | corrupted, because of being resumed e.g., in the | |
9101 | middle of a multi-byte instruction, or skipped a | |
9102 | one-byte instruction. This was actually seen happen | |
9103 | on native x86-linux, and should be less rare on | |
9104 | targets that do not support new thread events, like | |
9105 | remote, due to the heuristic depending on | |
9106 | thread_count. | |
9107 | ||
9108 | Mistaking a random SIGTRAP for a breakpoint trap | |
9109 | causes similar symptoms (PC adjustment applied when | |
9110 | it shouldn't), but then again, playing with SIGTRAPs | |
9111 | behind the debugger's back is asking for trouble. | |
9112 | ||
9113 | Since hardware watchpoint traps are always | |
9114 | distinguishable from other traps, so we don't need to | |
9115 | apply keep hardware watchpoint moribund locations | |
9116 | around. We simply always ignore hardware watchpoint | |
9117 | traps we can no longer explain. */ | |
9118 | ||
876fa593 JK |
9119 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9120 | old_loc->owner = NULL; | |
20874c92 | 9121 | |
876fa593 | 9122 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9123 | } |
9124 | else | |
876fa593 | 9125 | free_bp_location (old_loc); |
20874c92 | 9126 | } |
74960c60 | 9127 | } |
1c5cfe86 | 9128 | |
2d134ed3 PA |
9129 | /* Rescan breakpoints at the same address and section, marking the |
9130 | first one as "first" and any others as "duplicates". This is so | |
9131 | that the bpt instruction is only inserted once. If we have a | |
9132 | permanent breakpoint at the same place as BPT, make that one the | |
9133 | official one, and the rest as duplicates. Permanent breakpoints | |
9134 | are sorted first for the same address. | |
9135 | ||
9136 | Do the same for hardware watchpoints, but also considering the | |
9137 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9138 | |
2d134ed3 PA |
9139 | bp_loc_first = NULL; |
9140 | wp_loc_first = NULL; | |
9141 | awp_loc_first = NULL; | |
9142 | rwp_loc_first = NULL; | |
876fa593 | 9143 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9144 | { |
876fa593 | 9145 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9146 | struct bp_location **loc_first_p; |
876fa593 JK |
9147 | |
9148 | if (b->enable_state == bp_disabled | |
9149 | || b->enable_state == bp_call_disabled | |
9150 | || b->enable_state == bp_startup_disabled | |
9151 | || !loc->enabled | |
9152 | || loc->shlib_disabled | |
15c3d785 | 9153 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9154 | || is_tracepoint (b)) |
876fa593 JK |
9155 | continue; |
9156 | ||
9157 | /* Permanent breakpoint should always be inserted. */ | |
9158 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9159 | internal_error (__FILE__, __LINE__, | |
9160 | _("allegedly permanent breakpoint is not " | |
9161 | "actually inserted")); | |
9162 | ||
2d134ed3 PA |
9163 | if (b->type == bp_hardware_watchpoint) |
9164 | loc_first_p = &wp_loc_first; | |
9165 | else if (b->type == bp_read_watchpoint) | |
9166 | loc_first_p = &rwp_loc_first; | |
9167 | else if (b->type == bp_access_watchpoint) | |
9168 | loc_first_p = &awp_loc_first; | |
9169 | else | |
9170 | loc_first_p = &bp_loc_first; | |
9171 | ||
9172 | if (*loc_first_p == NULL | |
9173 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9174 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9175 | { |
2d134ed3 | 9176 | *loc_first_p = loc; |
876fa593 JK |
9177 | loc->duplicate = 0; |
9178 | continue; | |
9179 | } | |
9180 | ||
9181 | loc->duplicate = 1; | |
9182 | ||
2d134ed3 PA |
9183 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9184 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9185 | internal_error (__FILE__, __LINE__, |
9186 | _("another breakpoint was inserted on top of " | |
9187 | "a permanent breakpoint")); | |
0d381245 | 9188 | } |
74960c60 | 9189 | |
50c71eaf | 9190 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9191 | && (have_live_inferiors () |
2567c7d9 | 9192 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9193 | insert_breakpoint_locations (); |
f7545552 TT |
9194 | |
9195 | do_cleanups (cleanups); | |
74960c60 VP |
9196 | } |
9197 | ||
20874c92 VP |
9198 | void |
9199 | breakpoint_retire_moribund (void) | |
9200 | { | |
9201 | struct bp_location *loc; | |
9202 | int ix; | |
9203 | ||
9204 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9205 | if (--(loc->events_till_retirement) == 0) | |
9206 | { | |
9207 | free_bp_location (loc); | |
9208 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
9209 | --ix; | |
9210 | } | |
9211 | } | |
9212 | ||
74960c60 | 9213 | static void |
b60e7edf | 9214 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9215 | { |
9216 | struct gdb_exception e; | |
cc59ec59 | 9217 | |
74960c60 | 9218 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9219 | update_global_location_list (inserting); |
0d381245 VP |
9220 | } |
9221 | ||
a474d7c2 PA |
9222 | /* Clear BPT from a BPS. */ |
9223 | static void | |
9224 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
9225 | { | |
9226 | bpstat bs; | |
cc59ec59 | 9227 | |
a474d7c2 PA |
9228 | for (bs = bps; bs; bs = bs->next) |
9229 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
9230 | { | |
9231 | bs->breakpoint_at = NULL; | |
9232 | bs->old_val = NULL; | |
9233 | /* bs->commands will be freed later. */ | |
9234 | } | |
9235 | } | |
9236 | ||
9237 | /* Callback for iterate_over_threads. */ | |
9238 | static int | |
9239 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
9240 | { | |
9241 | struct breakpoint *bpt = data; | |
cc59ec59 | 9242 | |
a474d7c2 PA |
9243 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); |
9244 | return 0; | |
9245 | } | |
9246 | ||
53a5351d JM |
9247 | /* Delete a breakpoint and clean up all traces of it in the data |
9248 | structures. */ | |
c906108c SS |
9249 | |
9250 | void | |
fba45db2 | 9251 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9252 | { |
52f0bd74 | 9253 | struct breakpoint *b; |
c906108c | 9254 | |
8a3fe4f8 | 9255 | gdb_assert (bpt != NULL); |
c906108c SS |
9256 | |
9257 | /* Has this bp already been deleted? This can happen because multiple | |
9258 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
9259 | ||
9260 | One example of this happening is a watchpoint's scope bp. When the | |
9261 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
9262 | delete it. We also delete its scope bp. But the scope bp is marked | |
9263 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
9264 | checked for auto-deleting bp's, which are deleted. | |
9265 | ||
9266 | A real solution to this problem might involve reference counts in bp's, | |
9267 | and/or giving them pointers back to their referencing bpstat's, and | |
9268 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 9269 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
9270 | if (bpt->type == bp_none) |
9271 | return; | |
9272 | ||
e5a0a904 JK |
9273 | /* At least avoid this stale reference until the reference counting of |
9274 | breakpoints gets resolved. */ | |
9275 | if (bpt->related_breakpoint != NULL) | |
9276 | { | |
9277 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9278 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9279 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9280 | bpt->related_breakpoint = NULL; | |
9281 | } | |
9282 | ||
383f836e | 9283 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9284 | |
c906108c SS |
9285 | if (breakpoint_chain == bpt) |
9286 | breakpoint_chain = bpt->next; | |
9287 | ||
c906108c SS |
9288 | ALL_BREAKPOINTS (b) |
9289 | if (b->next == bpt) | |
c5aa993b JM |
9290 | { |
9291 | b->next = bpt->next; | |
9292 | break; | |
9293 | } | |
c906108c | 9294 | |
9add0f1b | 9295 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9296 | xfree (bpt->cond_string); |
9297 | xfree (bpt->cond_exp); | |
9298 | xfree (bpt->addr_string); | |
9299 | xfree (bpt->exp); | |
9300 | xfree (bpt->exp_string); | |
9301 | value_free (bpt->val); | |
9302 | xfree (bpt->source_file); | |
9303 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9304 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c SS |
9305 | |
9306 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
9307 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
9308 | We just check stop_bpstat for now. Note that we cannot just |
9309 | remove bpstats pointing at bpt from the stop_bpstat list | |
9310 | entirely, as breakpoint commands are associated with the bpstat; | |
9311 | if we remove it here, then the later call to | |
9312 | bpstat_do_actions (&stop_bpstat); | |
9313 | in event-top.c won't do anything, and temporary breakpoints | |
9314 | with commands won't work. */ | |
a474d7c2 | 9315 | |
a474d7c2 | 9316 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
9317 | |
9318 | /* Now that breakpoint is removed from breakpoint | |
9319 | list, update the global location list. This | |
9320 | will remove locations that used to belong to | |
9321 | this breakpoint. Do this before freeing | |
9322 | the breakpoint itself, since remove_breakpoint | |
9323 | looks at location's owner. It might be better | |
9324 | design to have location completely self-contained, | |
9325 | but it's not the case now. */ | |
b60e7edf | 9326 | update_global_location_list (0); |
74960c60 VP |
9327 | |
9328 | ||
c906108c SS |
9329 | /* On the chance that someone will soon try again to delete this same |
9330 | bp, we mark it as deleted before freeing its storage. */ | |
9331 | bpt->type = bp_none; | |
9332 | ||
b8c9b27d | 9333 | xfree (bpt); |
c906108c SS |
9334 | } |
9335 | ||
4d6140d9 AC |
9336 | static void |
9337 | do_delete_breakpoint_cleanup (void *b) | |
9338 | { | |
9339 | delete_breakpoint (b); | |
9340 | } | |
9341 | ||
9342 | struct cleanup * | |
9343 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9344 | { | |
9345 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9346 | } | |
9347 | ||
95a42b64 TT |
9348 | /* A callback for map_breakpoint_numbers that calls |
9349 | delete_breakpoint. */ | |
9350 | ||
9351 | static void | |
9352 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9353 | { | |
9354 | delete_breakpoint (b); | |
9355 | } | |
9356 | ||
c906108c | 9357 | void |
fba45db2 | 9358 | delete_command (char *arg, int from_tty) |
c906108c SS |
9359 | { |
9360 | struct breakpoint *b, *temp; | |
9361 | ||
ea9365bb TT |
9362 | dont_repeat (); |
9363 | ||
c906108c SS |
9364 | if (arg == 0) |
9365 | { | |
9366 | int breaks_to_delete = 0; | |
9367 | ||
9368 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
9369 | Do not delete internal or call-dummy breakpoints, these |
9370 | have to be deleted with an explicit breakpoint number argument. */ | |
9371 | ALL_BREAKPOINTS (b) | |
9372 | { | |
059fb39f | 9373 | if (b->type != bp_call_dummy |
aa7d318d | 9374 | && b->type != bp_std_terminate |
059fb39f | 9375 | && b->type != bp_shlib_event |
4efc6507 | 9376 | && b->type != bp_jit_event |
059fb39f PM |
9377 | && b->type != bp_thread_event |
9378 | && b->type != bp_overlay_event | |
0fd8e87f | 9379 | && b->type != bp_longjmp_master |
aa7d318d | 9380 | && b->type != bp_std_terminate_master |
059fb39f | 9381 | && b->number >= 0) |
973d738b DJ |
9382 | { |
9383 | breaks_to_delete = 1; | |
9384 | break; | |
9385 | } | |
c5aa993b | 9386 | } |
c906108c SS |
9387 | |
9388 | /* Ask user only if there are some breakpoints to delete. */ | |
9389 | if (!from_tty | |
e2e0b3e5 | 9390 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9391 | { |
c5aa993b JM |
9392 | ALL_BREAKPOINTS_SAFE (b, temp) |
9393 | { | |
059fb39f | 9394 | if (b->type != bp_call_dummy |
aa7d318d | 9395 | && b->type != bp_std_terminate |
059fb39f PM |
9396 | && b->type != bp_shlib_event |
9397 | && b->type != bp_thread_event | |
4efc6507 | 9398 | && b->type != bp_jit_event |
059fb39f | 9399 | && b->type != bp_overlay_event |
0fd8e87f | 9400 | && b->type != bp_longjmp_master |
aa7d318d | 9401 | && b->type != bp_std_terminate_master |
059fb39f | 9402 | && b->number >= 0) |
c5aa993b JM |
9403 | delete_breakpoint (b); |
9404 | } | |
c906108c SS |
9405 | } |
9406 | } | |
9407 | else | |
95a42b64 | 9408 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
9409 | } |
9410 | ||
0d381245 VP |
9411 | static int |
9412 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 9413 | { |
0d381245 VP |
9414 | for (; loc; loc = loc->next) |
9415 | if (!loc->shlib_disabled) | |
9416 | return 0; | |
9417 | return 1; | |
fe3f5fa8 VP |
9418 | } |
9419 | ||
776592bf DE |
9420 | /* Subroutine of update_breakpoint_locations to simplify it. |
9421 | Return non-zero if multiple fns in list LOC have the same name. | |
9422 | Null names are ignored. */ | |
9423 | ||
9424 | static int | |
9425 | ambiguous_names_p (struct bp_location *loc) | |
9426 | { | |
9427 | struct bp_location *l; | |
9428 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
9429 | (int (*) (const void *, |
9430 | const void *)) streq, | |
776592bf DE |
9431 | NULL, xcalloc, xfree); |
9432 | ||
9433 | for (l = loc; l != NULL; l = l->next) | |
9434 | { | |
9435 | const char **slot; | |
9436 | const char *name = l->function_name; | |
9437 | ||
9438 | /* Allow for some names to be NULL, ignore them. */ | |
9439 | if (name == NULL) | |
9440 | continue; | |
9441 | ||
9442 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
9443 | INSERT); | |
9444 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
9445 | NULL. */ | |
9446 | if (*slot != NULL) | |
9447 | { | |
9448 | htab_delete (htab); | |
9449 | return 1; | |
9450 | } | |
9451 | *slot = name; | |
9452 | } | |
9453 | ||
9454 | htab_delete (htab); | |
9455 | return 0; | |
9456 | } | |
9457 | ||
fe3f5fa8 | 9458 | static void |
0d381245 VP |
9459 | update_breakpoint_locations (struct breakpoint *b, |
9460 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
9461 | { |
9462 | int i; | |
9463 | char *s; | |
0d381245 VP |
9464 | struct bp_location *existing_locations = b->loc; |
9465 | ||
9466 | /* If there's no new locations, and all existing locations | |
9467 | are pending, don't do anything. This optimizes | |
9468 | the common case where all locations are in the same | |
9469 | shared library, that was unloaded. We'd like to | |
9470 | retain the location, so that when the library | |
9471 | is loaded again, we don't loose the enabled/disabled | |
9472 | status of the individual locations. */ | |
9473 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
9474 | return; |
9475 | ||
fe3f5fa8 VP |
9476 | b->loc = NULL; |
9477 | ||
0d381245 | 9478 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 9479 | { |
0d381245 | 9480 | struct bp_location *new_loc = |
39d61571 | 9481 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 9482 | |
0d381245 VP |
9483 | /* Reparse conditions, they might contain references to the |
9484 | old symtab. */ | |
9485 | if (b->cond_string != NULL) | |
9486 | { | |
9487 | struct gdb_exception e; | |
fe3f5fa8 | 9488 | |
0d381245 VP |
9489 | s = b->cond_string; |
9490 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9491 | { | |
9492 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
9493 | 0); | |
9494 | } | |
9495 | if (e.reason < 0) | |
9496 | { | |
9497 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
9498 | b->number, e.message); | |
9499 | new_loc->enabled = 0; | |
9500 | } | |
9501 | } | |
fe3f5fa8 | 9502 | |
0d381245 VP |
9503 | if (b->source_file != NULL) |
9504 | xfree (b->source_file); | |
9505 | if (sals.sals[i].symtab == NULL) | |
9506 | b->source_file = NULL; | |
9507 | else | |
1b36a34b | 9508 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 9509 | |
0d381245 VP |
9510 | if (b->line_number == 0) |
9511 | b->line_number = sals.sals[i].line; | |
9512 | } | |
fe3f5fa8 | 9513 | |
514f746b AR |
9514 | /* Update locations of permanent breakpoints. */ |
9515 | if (b->enable_state == bp_permanent) | |
9516 | make_breakpoint_permanent (b); | |
9517 | ||
0d381245 VP |
9518 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
9519 | { | |
9520 | struct bp_location *e = existing_locations; | |
776592bf DE |
9521 | /* If there are multiple breakpoints with the same function name, |
9522 | e.g. for inline functions, comparing function names won't work. | |
9523 | Instead compare pc addresses; this is just a heuristic as things | |
9524 | may have moved, but in practice it gives the correct answer | |
9525 | often enough until a better solution is found. */ | |
9526 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
9527 | ||
0d381245 VP |
9528 | for (; e; e = e->next) |
9529 | { | |
9530 | if (!e->enabled && e->function_name) | |
9531 | { | |
9532 | struct bp_location *l = b->loc; | |
776592bf DE |
9533 | if (have_ambiguous_names) |
9534 | { | |
9535 | for (; l; l = l->next) | |
6c95b8df PA |
9536 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
9537 | l->pspace->aspace, l->address)) | |
776592bf DE |
9538 | { |
9539 | l->enabled = 0; | |
9540 | break; | |
9541 | } | |
9542 | } | |
9543 | else | |
9544 | { | |
9545 | for (; l; l = l->next) | |
9546 | if (l->function_name | |
9547 | && strcmp (e->function_name, l->function_name) == 0) | |
9548 | { | |
9549 | l->enabled = 0; | |
9550 | break; | |
9551 | } | |
9552 | } | |
0d381245 VP |
9553 | } |
9554 | } | |
9555 | } | |
fe3f5fa8 | 9556 | |
b60e7edf | 9557 | update_global_location_list (1); |
fe3f5fa8 VP |
9558 | } |
9559 | ||
9560 | ||
c906108c SS |
9561 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9562 | The value we return ends up being the return value from catch_errors. | |
9563 | Unused in this case. */ | |
9564 | ||
9565 | static int | |
4efb68b1 | 9566 | breakpoint_re_set_one (void *bint) |
c906108c | 9567 | { |
53a5351d JM |
9568 | /* get past catch_errs */ |
9569 | struct breakpoint *b = (struct breakpoint *) bint; | |
fe3f5fa8 VP |
9570 | int not_found = 0; |
9571 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9572 | struct symtabs_and_lines sals = {0}; |
9573 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9574 | char *s; |
fe3f5fa8 | 9575 | struct gdb_exception e; |
6c95b8df | 9576 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9577 | |
9578 | switch (b->type) | |
9579 | { | |
9580 | case bp_none: | |
8a3fe4f8 | 9581 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9582 | b->number); |
c906108c SS |
9583 | return 0; |
9584 | case bp_breakpoint: | |
9585 | case bp_hardware_breakpoint: | |
1042e4c0 | 9586 | case bp_tracepoint: |
7a697b8d | 9587 | case bp_fast_tracepoint: |
8bea4e01 UW |
9588 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9589 | if (b->enable_state == bp_startup_disabled) | |
9590 | return 0; | |
9591 | ||
c906108c SS |
9592 | if (b->addr_string == NULL) |
9593 | { | |
9594 | /* Anything without a string can't be re-set. */ | |
9595 | delete_breakpoint (b); | |
9596 | return 0; | |
9597 | } | |
c906108c SS |
9598 | |
9599 | set_language (b->language); | |
9600 | input_radix = b->input_radix; | |
9601 | s = b->addr_string; | |
6c95b8df PA |
9602 | |
9603 | save_current_space_and_thread (); | |
9604 | switch_to_program_space_and_thread (b->pspace); | |
9605 | ||
fe3f5fa8 | 9606 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9607 | { |
fe3f5fa8 VP |
9608 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9609 | not_found_ptr); | |
9610 | } | |
9611 | if (e.reason < 0) | |
9612 | { | |
9613 | int not_found_and_ok = 0; | |
9614 | /* For pending breakpoints, it's expected that parsing | |
9615 | will fail until the right shared library is loaded. | |
9616 | User has already told to create pending breakpoints and | |
9617 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9618 | state, then user already saw the message about that breakpoint | |
9619 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9620 | if (not_found |
9621 | && (b->condition_not_parsed | |
9622 | || (b->loc && b->loc->shlib_disabled) | |
9623 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9624 | not_found_and_ok = 1; |
9625 | ||
9626 | if (!not_found_and_ok) | |
c906108c | 9627 | { |
fe3f5fa8 VP |
9628 | /* We surely don't want to warn about the same breakpoint |
9629 | 10 times. One solution, implemented here, is disable | |
9630 | the breakpoint on error. Another solution would be to | |
9631 | have separate 'warning emitted' flag. Since this | |
9632 | happens only when a binary has changed, I don't know | |
9633 | which approach is better. */ | |
9634 | b->enable_state = bp_disabled; | |
9635 | throw_exception (e); | |
c906108c | 9636 | } |
fe3f5fa8 | 9637 | } |
c906108c | 9638 | |
6c95b8df | 9639 | if (!not_found) |
fe3f5fa8 | 9640 | { |
6c95b8df PA |
9641 | gdb_assert (sals.nelts == 1); |
9642 | ||
9643 | resolve_sal_pc (&sals.sals[0]); | |
9644 | if (b->condition_not_parsed && s && s[0]) | |
9645 | { | |
9646 | char *cond_string = 0; | |
9647 | int thread = -1; | |
9648 | int task = 0; | |
9649 | ||
9650 | find_condition_and_thread (s, sals.sals[0].pc, | |
9651 | &cond_string, &thread, &task); | |
9652 | if (cond_string) | |
9653 | b->cond_string = cond_string; | |
9654 | b->thread = thread; | |
9655 | b->task = task; | |
9656 | b->condition_not_parsed = 0; | |
9657 | } | |
9658 | ||
9659 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9660 | } |
6c95b8df PA |
9661 | |
9662 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9663 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9664 | break; |
9665 | ||
9666 | case bp_watchpoint: | |
9667 | case bp_hardware_watchpoint: | |
9668 | case bp_read_watchpoint: | |
9669 | case bp_access_watchpoint: | |
0b3de036 VP |
9670 | /* Watchpoint can be either on expression using entirely global variables, |
9671 | or it can be on local variables. | |
9672 | ||
9673 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9674 | across program restarts. Since they can use variables from shared | |
9675 | libraries, we need to reparse expression as libraries are loaded | |
9676 | and unloaded. | |
9677 | ||
9678 | Watchpoints on local variables can also change meaning as result | |
9679 | of solib event. For example, if a watchpoint uses both a local and | |
9680 | a global variables in expression, it's a local watchpoint, but | |
9681 | unloading of a shared library will make the expression invalid. | |
9682 | This is not a very common use case, but we still re-evaluate | |
9683 | expression, to avoid surprises to the user. | |
9684 | ||
9685 | Note that for local watchpoints, we re-evaluate it only if | |
9686 | watchpoints frame id is still valid. If it's not, it means | |
9687 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9688 | I'm not sure we'll ever be called in this case. | |
9689 | ||
9690 | If a local watchpoint's frame id is still valid, then | |
9691 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9692 | ||
9693 | Don't do anything about disabled watchpoints, since they will | |
9694 | be reevaluated again when enabled. */ | |
a5606eee | 9695 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9696 | break; |
c5aa993b JM |
9697 | /* We needn't really do anything to reset these, since the mask |
9698 | that requests them is unaffected by e.g., new libraries being | |
9699 | loaded. */ | |
ce78b96d | 9700 | case bp_catchpoint: |
c906108c | 9701 | break; |
c5aa993b | 9702 | |
c906108c | 9703 | default: |
a3f17187 | 9704 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9705 | /* fall through */ |
0fd8e87f UW |
9706 | /* Delete overlay event and longjmp master breakpoints; they will be |
9707 | reset later by breakpoint_re_set. */ | |
1900040c | 9708 | case bp_overlay_event: |
0fd8e87f | 9709 | case bp_longjmp_master: |
aa7d318d | 9710 | case bp_std_terminate_master: |
c906108c SS |
9711 | delete_breakpoint (b); |
9712 | break; | |
9713 | ||
c5aa993b JM |
9714 | /* This breakpoint is special, it's set up when the inferior |
9715 | starts and we really don't want to touch it. */ | |
c906108c SS |
9716 | case bp_shlib_event: |
9717 | ||
c4093a6a JM |
9718 | /* Like bp_shlib_event, this breakpoint type is special. |
9719 | Once it is set up, we do not want to touch it. */ | |
9720 | case bp_thread_event: | |
9721 | ||
c5aa993b JM |
9722 | /* Keep temporary breakpoints, which can be encountered when we step |
9723 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9724 | Otherwise these should have been blown away via the cleanup chain | |
9725 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9726 | case bp_until: |
9727 | case bp_finish: | |
9728 | case bp_watchpoint_scope: | |
9729 | case bp_call_dummy: | |
aa7d318d | 9730 | case bp_std_terminate: |
c906108c | 9731 | case bp_step_resume: |
611c83ae PA |
9732 | case bp_longjmp: |
9733 | case bp_longjmp_resume: | |
4efc6507 | 9734 | case bp_jit_event: |
c906108c SS |
9735 | break; |
9736 | } | |
9737 | ||
6c95b8df | 9738 | do_cleanups (cleanups); |
c906108c SS |
9739 | return 0; |
9740 | } | |
9741 | ||
69de3c6a | 9742 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9743 | void |
69de3c6a | 9744 | breakpoint_re_set (void) |
c906108c SS |
9745 | { |
9746 | struct breakpoint *b, *temp; | |
9747 | enum language save_language; | |
9748 | int save_input_radix; | |
6c95b8df | 9749 | struct cleanup *old_chain; |
c5aa993b | 9750 | |
c906108c SS |
9751 | save_language = current_language->la_language; |
9752 | save_input_radix = input_radix; | |
6c95b8df PA |
9753 | old_chain = save_current_program_space (); |
9754 | ||
c906108c | 9755 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9756 | { |
53a5351d | 9757 | /* Format possible error msg */ |
fe3f5fa8 | 9758 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9759 | b->number); |
9760 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9761 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9762 | do_cleanups (cleanups); |
c5aa993b | 9763 | } |
c906108c SS |
9764 | set_language (save_language); |
9765 | input_radix = save_input_radix; | |
e62c965a | 9766 | |
0756c555 | 9767 | jit_breakpoint_re_set (); |
4efc6507 | 9768 | |
6c95b8df PA |
9769 | do_cleanups (old_chain); |
9770 | ||
69de3c6a | 9771 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9772 | create_longjmp_master_breakpoint ("longjmp"); |
9773 | create_longjmp_master_breakpoint ("_longjmp"); | |
9774 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9775 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 9776 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
9777 | } |
9778 | \f | |
c906108c SS |
9779 | /* Reset the thread number of this breakpoint: |
9780 | ||
9781 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9782 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9783 | void |
fba45db2 | 9784 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9785 | { |
9786 | if (b->thread != -1) | |
9787 | { | |
39f77062 KB |
9788 | if (in_thread_list (inferior_ptid)) |
9789 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9790 | |
9791 | /* We're being called after following a fork. The new fork is | |
9792 | selected as current, and unless this was a vfork will have a | |
9793 | different program space from the original thread. Reset that | |
9794 | as well. */ | |
9795 | b->loc->pspace = current_program_space; | |
c906108c SS |
9796 | } |
9797 | } | |
9798 | ||
03ac34d5 MS |
9799 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9800 | If from_tty is nonzero, it prints a message to that effect, | |
9801 | which ends with a period (no newline). */ | |
9802 | ||
c906108c | 9803 | void |
fba45db2 | 9804 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9805 | { |
52f0bd74 | 9806 | struct breakpoint *b; |
c906108c SS |
9807 | |
9808 | if (count < 0) | |
9809 | count = 0; | |
9810 | ||
9811 | ALL_BREAKPOINTS (b) | |
9812 | if (b->number == bptnum) | |
c5aa993b | 9813 | { |
d77f58be SS |
9814 | if (is_tracepoint (b)) |
9815 | { | |
9816 | if (from_tty && count != 0) | |
9817 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
9818 | bptnum); | |
9819 | return; | |
9820 | } | |
9821 | ||
c5aa993b | 9822 | b->ignore_count = count; |
221ea385 KS |
9823 | if (from_tty) |
9824 | { | |
9825 | if (count == 0) | |
a3f17187 | 9826 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
9827 | bptnum); |
9828 | else if (count == 1) | |
a3f17187 | 9829 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
9830 | bptnum); |
9831 | else | |
a3f17187 | 9832 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
9833 | count, bptnum); |
9834 | } | |
c5aa993b | 9835 | breakpoints_changed (); |
383f836e | 9836 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
9837 | return; |
9838 | } | |
c906108c | 9839 | |
8a3fe4f8 | 9840 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
9841 | } |
9842 | ||
b2175913 MS |
9843 | void |
9844 | make_breakpoint_silent (struct breakpoint *b) | |
9845 | { | |
9846 | /* Silence the breakpoint. */ | |
9847 | b->silent = 1; | |
9848 | } | |
9849 | ||
c906108c SS |
9850 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
9851 | ||
9852 | static void | |
fba45db2 | 9853 | ignore_command (char *args, int from_tty) |
c906108c SS |
9854 | { |
9855 | char *p = args; | |
52f0bd74 | 9856 | int num; |
c906108c SS |
9857 | |
9858 | if (p == 0) | |
e2e0b3e5 | 9859 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 9860 | |
c906108c | 9861 | num = get_number (&p); |
5c44784c | 9862 | if (num == 0) |
8a3fe4f8 | 9863 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 9864 | if (*p == 0) |
8a3fe4f8 | 9865 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
9866 | |
9867 | set_ignore_count (num, | |
9868 | longest_to_int (value_as_long (parse_and_eval (p))), | |
9869 | from_tty); | |
221ea385 KS |
9870 | if (from_tty) |
9871 | printf_filtered ("\n"); | |
c906108c SS |
9872 | } |
9873 | \f | |
9874 | /* Call FUNCTION on each of the breakpoints | |
9875 | whose numbers are given in ARGS. */ | |
9876 | ||
9877 | static void | |
95a42b64 TT |
9878 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
9879 | void *), | |
9880 | void *data) | |
c906108c | 9881 | { |
52f0bd74 | 9882 | char *p = args; |
c906108c | 9883 | char *p1; |
52f0bd74 AC |
9884 | int num; |
9885 | struct breakpoint *b, *tmp; | |
11cf8741 | 9886 | int match; |
c906108c SS |
9887 | |
9888 | if (p == 0) | |
e2e0b3e5 | 9889 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
9890 | |
9891 | while (*p) | |
9892 | { | |
11cf8741 | 9893 | match = 0; |
c906108c | 9894 | p1 = p; |
c5aa993b | 9895 | |
5c44784c JM |
9896 | num = get_number_or_range (&p1); |
9897 | if (num == 0) | |
c5aa993b | 9898 | { |
8a3fe4f8 | 9899 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
9900 | } |
9901 | else | |
9902 | { | |
9903 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
9904 | if (b->number == num) | |
9905 | { | |
9906 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 9907 | match = 1; |
95a42b64 | 9908 | function (b, data); |
5c44784c | 9909 | if (related_breakpoint) |
95a42b64 | 9910 | function (related_breakpoint, data); |
11cf8741 | 9911 | break; |
5c44784c | 9912 | } |
11cf8741 | 9913 | if (match == 0) |
a3f17187 | 9914 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 9915 | } |
c906108c SS |
9916 | p = p1; |
9917 | } | |
9918 | } | |
9919 | ||
0d381245 VP |
9920 | static struct bp_location * |
9921 | find_location_by_number (char *number) | |
9922 | { | |
9923 | char *dot = strchr (number, '.'); | |
9924 | char *p1; | |
9925 | int bp_num; | |
9926 | int loc_num; | |
9927 | struct breakpoint *b; | |
9928 | struct bp_location *loc; | |
9929 | ||
9930 | *dot = '\0'; | |
9931 | ||
9932 | p1 = number; | |
9933 | bp_num = get_number_or_range (&p1); | |
9934 | if (bp_num == 0) | |
9935 | error (_("Bad breakpoint number '%s'"), number); | |
9936 | ||
9937 | ALL_BREAKPOINTS (b) | |
9938 | if (b->number == bp_num) | |
9939 | { | |
9940 | break; | |
9941 | } | |
9942 | ||
9943 | if (!b || b->number != bp_num) | |
9944 | error (_("Bad breakpoint number '%s'"), number); | |
9945 | ||
9946 | p1 = dot+1; | |
9947 | loc_num = get_number_or_range (&p1); | |
9948 | if (loc_num == 0) | |
9949 | error (_("Bad breakpoint location number '%s'"), number); | |
9950 | ||
9951 | --loc_num; | |
9952 | loc = b->loc; | |
9953 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
9954 | ; | |
9955 | if (!loc) | |
9956 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
9957 | ||
9958 | return loc; | |
9959 | } | |
9960 | ||
9961 | ||
1900040c MS |
9962 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9963 | If from_tty is nonzero, it prints a message to that effect, | |
9964 | which ends with a period (no newline). */ | |
9965 | ||
c906108c | 9966 | void |
fba45db2 | 9967 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9968 | { |
9969 | /* Never disable a watchpoint scope breakpoint; we want to | |
9970 | hit them when we leave scope so we can delete both the | |
9971 | watchpoint and its scope breakpoint at that time. */ | |
9972 | if (bpt->type == bp_watchpoint_scope) | |
9973 | return; | |
9974 | ||
c2c6d25f | 9975 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 9976 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
9977 | return; |
9978 | ||
b5de0fa7 | 9979 | bpt->enable_state = bp_disabled; |
c906108c | 9980 | |
b60e7edf | 9981 | update_global_location_list (0); |
c906108c | 9982 | |
383f836e | 9983 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9984 | } |
9985 | ||
95a42b64 TT |
9986 | /* A callback for map_breakpoint_numbers that calls |
9987 | disable_breakpoint. */ | |
9988 | ||
9989 | static void | |
9990 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
9991 | { | |
9992 | disable_breakpoint (b); | |
9993 | } | |
9994 | ||
c906108c | 9995 | static void |
fba45db2 | 9996 | disable_command (char *args, int from_tty) |
c906108c | 9997 | { |
52f0bd74 | 9998 | struct breakpoint *bpt; |
cc59ec59 | 9999 | |
c906108c SS |
10000 | if (args == 0) |
10001 | ALL_BREAKPOINTS (bpt) | |
10002 | switch (bpt->type) | |
c5aa993b JM |
10003 | { |
10004 | case bp_none: | |
8a3fe4f8 | 10005 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10006 | bpt->number); |
c5aa993b JM |
10007 | continue; |
10008 | case bp_breakpoint: | |
1042e4c0 | 10009 | case bp_tracepoint: |
7a697b8d | 10010 | case bp_fast_tracepoint: |
ce78b96d | 10011 | case bp_catchpoint: |
c5aa993b JM |
10012 | case bp_hardware_breakpoint: |
10013 | case bp_watchpoint: | |
10014 | case bp_hardware_watchpoint: | |
10015 | case bp_read_watchpoint: | |
10016 | case bp_access_watchpoint: | |
10017 | disable_breakpoint (bpt); | |
10018 | default: | |
10019 | continue; | |
10020 | } | |
0d381245 VP |
10021 | else if (strchr (args, '.')) |
10022 | { | |
10023 | struct bp_location *loc = find_location_by_number (args); | |
10024 | if (loc) | |
10025 | loc->enabled = 0; | |
b60e7edf | 10026 | update_global_location_list (0); |
0d381245 | 10027 | } |
c906108c | 10028 | else |
95a42b64 | 10029 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10030 | } |
10031 | ||
10032 | static void | |
fba45db2 | 10033 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10034 | { |
afe38095 | 10035 | int target_resources_ok; |
c906108c SS |
10036 | |
10037 | if (bpt->type == bp_hardware_breakpoint) | |
10038 | { | |
10039 | int i; | |
c5aa993b | 10040 | i = hw_breakpoint_used_count (); |
53a5351d | 10041 | target_resources_ok = |
d92524f1 | 10042 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10043 | i + 1, 0); |
c906108c | 10044 | if (target_resources_ok == 0) |
8a3fe4f8 | 10045 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10046 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10047 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10048 | } |
10049 | ||
cc60f2e3 | 10050 | if (is_watchpoint (bpt)) |
c906108c | 10051 | { |
dde02812 ES |
10052 | struct gdb_exception e; |
10053 | ||
10054 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10055 | { |
dde02812 | 10056 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10057 | } |
dde02812 | 10058 | if (e.reason < 0) |
c5aa993b | 10059 | { |
dde02812 ES |
10060 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10061 | bpt->number); | |
10062 | return; | |
c5aa993b | 10063 | } |
c906108c | 10064 | } |
0101ce28 | 10065 | |
b4c291bb KH |
10066 | if (bpt->enable_state != bp_permanent) |
10067 | bpt->enable_state = bp_enabled; | |
10068 | bpt->disposition = disposition; | |
b60e7edf | 10069 | update_global_location_list (1); |
b4c291bb KH |
10070 | breakpoints_changed (); |
10071 | ||
383f836e | 10072 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10073 | } |
10074 | ||
fe3f5fa8 | 10075 | |
c906108c | 10076 | void |
fba45db2 | 10077 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10078 | { |
10079 | do_enable_breakpoint (bpt, bpt->disposition); | |
10080 | } | |
10081 | ||
95a42b64 TT |
10082 | /* A callback for map_breakpoint_numbers that calls |
10083 | enable_breakpoint. */ | |
10084 | ||
10085 | static void | |
10086 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10087 | { | |
10088 | enable_breakpoint (b); | |
10089 | } | |
10090 | ||
c906108c SS |
10091 | /* The enable command enables the specified breakpoints (or all defined |
10092 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10093 | in stopping the inferior. */ |
c906108c | 10094 | |
c906108c | 10095 | static void |
fba45db2 | 10096 | enable_command (char *args, int from_tty) |
c906108c | 10097 | { |
52f0bd74 | 10098 | struct breakpoint *bpt; |
cc59ec59 | 10099 | |
c906108c SS |
10100 | if (args == 0) |
10101 | ALL_BREAKPOINTS (bpt) | |
10102 | switch (bpt->type) | |
c5aa993b JM |
10103 | { |
10104 | case bp_none: | |
8a3fe4f8 | 10105 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10106 | bpt->number); |
c5aa993b JM |
10107 | continue; |
10108 | case bp_breakpoint: | |
1042e4c0 | 10109 | case bp_tracepoint: |
7a697b8d | 10110 | case bp_fast_tracepoint: |
ce78b96d | 10111 | case bp_catchpoint: |
c5aa993b JM |
10112 | case bp_hardware_breakpoint: |
10113 | case bp_watchpoint: | |
10114 | case bp_hardware_watchpoint: | |
10115 | case bp_read_watchpoint: | |
10116 | case bp_access_watchpoint: | |
10117 | enable_breakpoint (bpt); | |
10118 | default: | |
10119 | continue; | |
10120 | } | |
0d381245 VP |
10121 | else if (strchr (args, '.')) |
10122 | { | |
10123 | struct bp_location *loc = find_location_by_number (args); | |
10124 | if (loc) | |
10125 | loc->enabled = 1; | |
b60e7edf | 10126 | update_global_location_list (1); |
0d381245 | 10127 | } |
c906108c | 10128 | else |
95a42b64 | 10129 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10130 | } |
10131 | ||
10132 | static void | |
95a42b64 | 10133 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10134 | { |
b5de0fa7 | 10135 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10136 | } |
10137 | ||
c906108c | 10138 | static void |
fba45db2 | 10139 | enable_once_command (char *args, int from_tty) |
c906108c | 10140 | { |
95a42b64 | 10141 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10142 | } |
10143 | ||
10144 | static void | |
95a42b64 | 10145 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10146 | { |
b5de0fa7 | 10147 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10148 | } |
10149 | ||
c906108c | 10150 | static void |
fba45db2 | 10151 | enable_delete_command (char *args, int from_tty) |
c906108c | 10152 | { |
95a42b64 | 10153 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10154 | } |
10155 | \f | |
fa8d40ab JJ |
10156 | static void |
10157 | set_breakpoint_cmd (char *args, int from_tty) | |
10158 | { | |
10159 | } | |
10160 | ||
10161 | static void | |
10162 | show_breakpoint_cmd (char *args, int from_tty) | |
10163 | { | |
10164 | } | |
10165 | ||
1f3b5d1b PP |
10166 | /* Invalidate last known value of any hardware watchpoint if |
10167 | the memory which that value represents has been written to by | |
10168 | GDB itself. */ | |
10169 | ||
10170 | static void | |
10171 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10172 | const bfd_byte *data) | |
10173 | { | |
10174 | struct breakpoint *bp; | |
10175 | ||
10176 | ALL_BREAKPOINTS (bp) | |
10177 | if (bp->enable_state == bp_enabled | |
10178 | && bp->type == bp_hardware_watchpoint | |
10179 | && bp->val_valid && bp->val) | |
10180 | { | |
10181 | struct bp_location *loc; | |
10182 | ||
10183 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10184 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10185 | && loc->address + loc->length > addr | |
10186 | && addr + len > loc->address) | |
10187 | { | |
10188 | value_free (bp->val); | |
10189 | bp->val = NULL; | |
10190 | bp->val_valid = 0; | |
10191 | } | |
10192 | } | |
10193 | } | |
10194 | ||
c906108c SS |
10195 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10196 | ||
10197 | struct symtabs_and_lines | |
fba45db2 | 10198 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10199 | { |
10200 | struct symtabs_and_lines sals; | |
cc59ec59 | 10201 | |
c906108c | 10202 | if (string == 0) |
8a3fe4f8 | 10203 | error (_("Empty line specification.")); |
c906108c SS |
10204 | if (default_breakpoint_valid) |
10205 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10206 | default_breakpoint_symtab, |
10207 | default_breakpoint_line, | |
68219205 | 10208 | (char ***) NULL, NULL); |
c906108c SS |
10209 | else |
10210 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10211 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10212 | if (*string) |
8a3fe4f8 | 10213 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10214 | return sals; |
10215 | } | |
8181d85f DJ |
10216 | |
10217 | /* Create and insert a raw software breakpoint at PC. Return an | |
10218 | identifier, which should be used to remove the breakpoint later. | |
10219 | In general, places which call this should be using something on the | |
10220 | breakpoint chain instead; this function should be eliminated | |
10221 | someday. */ | |
10222 | ||
10223 | void * | |
6c95b8df PA |
10224 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10225 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10226 | { |
10227 | struct bp_target_info *bp_tgt; | |
10228 | ||
6c95b8df | 10229 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10230 | |
6c95b8df | 10231 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10232 | bp_tgt->placed_address = pc; |
6c95b8df | 10233 | |
a6d9a66e | 10234 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10235 | { |
10236 | /* Could not insert the breakpoint. */ | |
10237 | xfree (bp_tgt); | |
10238 | return NULL; | |
10239 | } | |
10240 | ||
10241 | return bp_tgt; | |
10242 | } | |
10243 | ||
10244 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
10245 | ||
10246 | int | |
a6d9a66e | 10247 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
10248 | { |
10249 | struct bp_target_info *bp_tgt = bp; | |
10250 | int ret; | |
10251 | ||
a6d9a66e | 10252 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
10253 | xfree (bp_tgt); |
10254 | ||
10255 | return ret; | |
10256 | } | |
10257 | ||
10258 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
10259 | ||
10260 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 10261 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
10262 | |
10263 | /* Create and insert a breakpoint for software single step. */ | |
10264 | ||
10265 | void | |
6c95b8df PA |
10266 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
10267 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
10268 | { |
10269 | void **bpt_p; | |
10270 | ||
10271 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
10272 | { |
10273 | bpt_p = &single_step_breakpoints[0]; | |
10274 | single_step_gdbarch[0] = gdbarch; | |
10275 | } | |
8181d85f DJ |
10276 | else |
10277 | { | |
10278 | gdb_assert (single_step_breakpoints[1] == NULL); | |
10279 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 10280 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
10281 | } |
10282 | ||
10283 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
10284 | to only create the breakpoints once, and actually put them on the | |
10285 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
10286 | adjust the addresses each time they were needed. Doing this requires | |
10287 | corresponding changes elsewhere where single step breakpoints are | |
10288 | handled, however. So, for now, we use this. */ | |
10289 | ||
6c95b8df | 10290 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 10291 | if (*bpt_p == NULL) |
5af949e3 UW |
10292 | error (_("Could not insert single-step breakpoint at %s"), |
10293 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
10294 | } |
10295 | ||
10296 | /* Remove and delete any breakpoints used for software single step. */ | |
10297 | ||
10298 | void | |
10299 | remove_single_step_breakpoints (void) | |
10300 | { | |
10301 | gdb_assert (single_step_breakpoints[0] != NULL); | |
10302 | ||
10303 | /* See insert_single_step_breakpoint for more about this deprecated | |
10304 | call. */ | |
a6d9a66e UW |
10305 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
10306 | single_step_breakpoints[0]); | |
10307 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
10308 | single_step_breakpoints[0] = NULL; |
10309 | ||
10310 | if (single_step_breakpoints[1] != NULL) | |
10311 | { | |
a6d9a66e UW |
10312 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
10313 | single_step_breakpoints[1]); | |
10314 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
10315 | single_step_breakpoints[1] = NULL; |
10316 | } | |
10317 | } | |
10318 | ||
1aafd4da UW |
10319 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
10320 | ||
10321 | static int | |
cc59ec59 MS |
10322 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
10323 | CORE_ADDR pc) | |
1aafd4da UW |
10324 | { |
10325 | int i; | |
10326 | ||
10327 | for (i = 0; i < 2; i++) | |
10328 | { | |
10329 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
10330 | if (bp_tgt |
10331 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
10332 | bp_tgt->placed_address, | |
10333 | aspace, pc)) | |
1aafd4da UW |
10334 | return 1; |
10335 | } | |
10336 | ||
10337 | return 0; | |
10338 | } | |
10339 | ||
a96d9b2e SDJ |
10340 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
10341 | non-zero otherwise. */ | |
10342 | static int | |
10343 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
10344 | { | |
10345 | if (syscall_catchpoint_p (bp) | |
10346 | && bp->enable_state != bp_disabled | |
10347 | && bp->enable_state != bp_call_disabled) | |
10348 | return 1; | |
10349 | else | |
10350 | return 0; | |
10351 | } | |
10352 | ||
10353 | int | |
10354 | catch_syscall_enabled (void) | |
10355 | { | |
10356 | struct inferior *inf = current_inferior (); | |
10357 | ||
10358 | return inf->total_syscalls_count != 0; | |
10359 | } | |
10360 | ||
10361 | int | |
10362 | catching_syscall_number (int syscall_number) | |
10363 | { | |
10364 | struct breakpoint *bp; | |
10365 | ||
10366 | ALL_BREAKPOINTS (bp) | |
10367 | if (is_syscall_catchpoint_enabled (bp)) | |
10368 | { | |
10369 | if (bp->syscalls_to_be_caught) | |
10370 | { | |
10371 | int i, iter; | |
10372 | for (i = 0; | |
10373 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
10374 | i++) | |
10375 | if (syscall_number == iter) | |
10376 | return 1; | |
10377 | } | |
10378 | else | |
10379 | return 1; | |
10380 | } | |
10381 | ||
10382 | return 0; | |
10383 | } | |
10384 | ||
10385 | /* Complete syscall names. Used by "catch syscall". */ | |
10386 | static char ** | |
10387 | catch_syscall_completer (struct cmd_list_element *cmd, | |
10388 | char *text, char *word) | |
10389 | { | |
10390 | const char **list = get_syscall_names (); | |
cc59ec59 | 10391 | |
a96d9b2e SDJ |
10392 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); |
10393 | } | |
10394 | ||
1042e4c0 SS |
10395 | /* Tracepoint-specific operations. */ |
10396 | ||
10397 | /* Set tracepoint count to NUM. */ | |
10398 | static void | |
10399 | set_tracepoint_count (int num) | |
10400 | { | |
10401 | tracepoint_count = num; | |
4fa62494 | 10402 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
10403 | } |
10404 | ||
10405 | void | |
10406 | trace_command (char *arg, int from_tty) | |
10407 | { | |
8cdf0e15 VP |
10408 | if (create_breakpoint (get_current_arch (), |
10409 | arg, | |
10410 | NULL, 0, 1 /* parse arg */, | |
10411 | 0 /* tempflag */, 0 /* hardwareflag */, | |
10412 | 1 /* traceflag */, | |
10413 | 0 /* Ignore count */, | |
10414 | pending_break_support, | |
10415 | NULL, | |
10416 | from_tty, | |
10417 | 1 /* enabled */)) | |
fd9b8c24 | 10418 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
10419 | } |
10420 | ||
7a697b8d SS |
10421 | void |
10422 | ftrace_command (char *arg, int from_tty) | |
10423 | { | |
8cdf0e15 VP |
10424 | if (create_breakpoint (get_current_arch (), |
10425 | arg, | |
10426 | NULL, 0, 1 /* parse arg */, | |
10427 | 0 /* tempflag */, 1 /* hardwareflag */, | |
10428 | 1 /* traceflag */, | |
10429 | 0 /* Ignore count */, | |
10430 | pending_break_support, | |
10431 | NULL, | |
10432 | from_tty, | |
10433 | 1 /* enabled */)) | |
fd9b8c24 | 10434 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
10435 | } |
10436 | ||
409873ef SS |
10437 | /* Set up a fake reader function that gets command lines from a linked |
10438 | list that was acquired during tracepoint uploading. */ | |
10439 | ||
10440 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 10441 | static int next_cmd; |
409873ef SS |
10442 | |
10443 | static char * | |
10444 | read_uploaded_action (void) | |
10445 | { | |
10446 | char *rslt; | |
10447 | ||
3149d8c1 | 10448 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 10449 | |
3149d8c1 | 10450 | next_cmd++; |
409873ef SS |
10451 | |
10452 | return rslt; | |
10453 | } | |
10454 | ||
00bf0b85 SS |
10455 | /* Given information about a tracepoint as recorded on a target (which |
10456 | can be either a live system or a trace file), attempt to create an | |
10457 | equivalent GDB tracepoint. This is not a reliable process, since | |
10458 | the target does not necessarily have all the information used when | |
10459 | the tracepoint was originally defined. */ | |
10460 | ||
10461 | struct breakpoint * | |
10462 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 10463 | { |
409873ef | 10464 | char *addr_str, small_buf[100]; |
d5551862 | 10465 | struct breakpoint *tp; |
fd9b8c24 | 10466 | |
409873ef SS |
10467 | if (utp->at_string) |
10468 | addr_str = utp->at_string; | |
10469 | else | |
10470 | { | |
10471 | /* In the absence of a source location, fall back to raw | |
10472 | address. Since there is no way to confirm that the address | |
10473 | means the same thing as when the trace was started, warn the | |
10474 | user. */ | |
10475 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
10476 | utp->number); | |
10477 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
10478 | addr_str = small_buf; | |
10479 | } | |
10480 | ||
10481 | /* There's not much we can do with a sequence of bytecodes. */ | |
10482 | if (utp->cond && !utp->cond_string) | |
10483 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
10484 | utp->number); | |
d5551862 | 10485 | |
8cdf0e15 | 10486 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
10487 | addr_str, |
10488 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 VP |
10489 | 0 /* tempflag */, |
10490 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
10491 | 1 /* traceflag */, | |
10492 | 0 /* Ignore count */, | |
10493 | pending_break_support, | |
10494 | NULL, | |
10495 | 0 /* from_tty */, | |
10496 | utp->enabled /* enabled */)) | |
fd9b8c24 PA |
10497 | return NULL; |
10498 | ||
00bf0b85 SS |
10499 | set_tracepoint_count (breakpoint_count); |
10500 | ||
409873ef | 10501 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
10502 | tp = get_tracepoint (tracepoint_count); |
10503 | gdb_assert (tp != NULL); | |
d5551862 | 10504 | |
00bf0b85 SS |
10505 | if (utp->pass > 0) |
10506 | { | |
409873ef | 10507 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 10508 | |
409873ef | 10509 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
10510 | } |
10511 | ||
409873ef SS |
10512 | /* If we have uploaded versions of the original commands, set up a |
10513 | special-purpose "reader" function and call the usual command line | |
10514 | reader, then pass the result to the breakpoint command-setting | |
10515 | function. */ | |
3149d8c1 | 10516 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 10517 | { |
409873ef | 10518 | struct command_line *cmd_list; |
00bf0b85 | 10519 | |
409873ef | 10520 | this_utp = utp; |
3149d8c1 | 10521 | next_cmd = 0; |
d5551862 | 10522 | |
409873ef SS |
10523 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
10524 | ||
10525 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 10526 | } |
3149d8c1 SS |
10527 | else if (!VEC_empty (char_ptr, utp->actions) |
10528 | || !VEC_empty (char_ptr, utp->step_actions)) | |
409873ef SS |
10529 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), |
10530 | utp->number); | |
00bf0b85 SS |
10531 | |
10532 | return tp; | |
10533 | } | |
10534 | ||
1042e4c0 SS |
10535 | /* Print information on tracepoint number TPNUM_EXP, or all if |
10536 | omitted. */ | |
10537 | ||
10538 | static void | |
10539 | tracepoints_info (char *tpnum_exp, int from_tty) | |
10540 | { | |
d77f58be SS |
10541 | int tpnum = -1, num_printed; |
10542 | ||
10543 | if (tpnum_exp) | |
10544 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 10545 | |
d77f58be SS |
10546 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
10547 | ||
10548 | if (num_printed == 0) | |
1042e4c0 | 10549 | { |
d77f58be SS |
10550 | if (tpnum == -1) |
10551 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
10552 | else | |
10553 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 10554 | } |
ad443146 SS |
10555 | |
10556 | default_collect_info (); | |
1042e4c0 SS |
10557 | } |
10558 | ||
10559 | /* The 'enable trace' command enables tracepoints. | |
10560 | Not supported by all targets. */ | |
10561 | static void | |
10562 | enable_trace_command (char *args, int from_tty) | |
10563 | { | |
10564 | enable_command (args, from_tty); | |
10565 | } | |
10566 | ||
10567 | /* The 'disable trace' command disables tracepoints. | |
10568 | Not supported by all targets. */ | |
10569 | static void | |
10570 | disable_trace_command (char *args, int from_tty) | |
10571 | { | |
10572 | disable_command (args, from_tty); | |
10573 | } | |
10574 | ||
10575 | /* Remove a tracepoint (or all if no argument) */ | |
10576 | static void | |
10577 | delete_trace_command (char *arg, int from_tty) | |
10578 | { | |
10579 | struct breakpoint *b, *temp; | |
10580 | ||
10581 | dont_repeat (); | |
10582 | ||
10583 | if (arg == 0) | |
10584 | { | |
10585 | int breaks_to_delete = 0; | |
10586 | ||
10587 | /* Delete all breakpoints if no argument. | |
10588 | Do not delete internal or call-dummy breakpoints, these | |
10589 | have to be deleted with an explicit breakpoint number argument. */ | |
10590 | ALL_TRACEPOINTS (b) | |
10591 | { | |
10592 | if (b->number >= 0) | |
10593 | { | |
10594 | breaks_to_delete = 1; | |
10595 | break; | |
10596 | } | |
10597 | } | |
10598 | ||
10599 | /* Ask user only if there are some breakpoints to delete. */ | |
10600 | if (!from_tty | |
10601 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
10602 | { | |
10603 | ALL_BREAKPOINTS_SAFE (b, temp) | |
10604 | { | |
d77f58be | 10605 | if (is_tracepoint (b) |
059fb39f | 10606 | && b->number >= 0) |
1042e4c0 SS |
10607 | delete_breakpoint (b); |
10608 | } | |
10609 | } | |
10610 | } | |
10611 | else | |
95a42b64 | 10612 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
10613 | } |
10614 | ||
10615 | /* Set passcount for tracepoint. | |
10616 | ||
10617 | First command argument is passcount, second is tracepoint number. | |
10618 | If tracepoint number omitted, apply to most recently defined. | |
10619 | Also accepts special argument "all". */ | |
10620 | ||
10621 | static void | |
10622 | trace_pass_command (char *args, int from_tty) | |
10623 | { | |
10624 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10625 | unsigned int count; | |
10626 | int all = 0; | |
10627 | ||
10628 | if (args == 0 || *args == 0) | |
10629 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10630 | ||
10631 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10632 | ||
10633 | while (*args && isspace ((int) *args)) | |
10634 | args++; | |
10635 | ||
10636 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10637 | { | |
10638 | args += 3; /* Skip special argument "all". */ | |
10639 | all = 1; | |
10640 | if (*args) | |
10641 | error (_("Junk at end of arguments.")); | |
10642 | } | |
10643 | else | |
10644 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10645 | ||
10646 | do | |
10647 | { | |
10648 | if (t1) | |
10649 | { | |
10650 | ALL_TRACEPOINTS (t2) | |
10651 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10652 | { | |
10653 | t2->pass_count = count; | |
10654 | observer_notify_tracepoint_modified (t2->number); | |
10655 | if (from_tty) | |
10656 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10657 | t2->number, count); | |
10658 | } | |
10659 | if (! all && *args) | |
10660 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10661 | } | |
10662 | } | |
10663 | while (*args); | |
10664 | } | |
10665 | ||
10666 | struct breakpoint * | |
10667 | get_tracepoint (int num) | |
10668 | { | |
10669 | struct breakpoint *t; | |
10670 | ||
10671 | ALL_TRACEPOINTS (t) | |
10672 | if (t->number == num) | |
10673 | return t; | |
10674 | ||
10675 | return NULL; | |
10676 | } | |
10677 | ||
d5551862 SS |
10678 | /* Find the tracepoint with the given target-side number (which may be |
10679 | different from the tracepoint number after disconnecting and | |
10680 | reconnecting). */ | |
10681 | ||
10682 | struct breakpoint * | |
10683 | get_tracepoint_by_number_on_target (int num) | |
10684 | { | |
10685 | struct breakpoint *t; | |
10686 | ||
10687 | ALL_TRACEPOINTS (t) | |
10688 | if (t->number_on_target == num) | |
10689 | return t; | |
10690 | ||
10691 | return NULL; | |
10692 | } | |
10693 | ||
1042e4c0 SS |
10694 | /* Utility: parse a tracepoint number and look it up in the list. |
10695 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10696 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10697 | recent tracepoint (tracepoint_count) is returned. */ | |
10698 | struct breakpoint * | |
10699 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10700 | { | |
10701 | extern int tracepoint_count; | |
10702 | struct breakpoint *t; | |
10703 | int tpnum; | |
10704 | char *instring = arg == NULL ? NULL : *arg; | |
10705 | ||
10706 | if (arg == NULL || *arg == NULL || ! **arg) | |
10707 | { | |
10708 | if (optional_p) | |
10709 | tpnum = tracepoint_count; | |
10710 | else | |
10711 | error_no_arg (_("tracepoint number")); | |
10712 | } | |
10713 | else | |
10714 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10715 | ||
10716 | if (tpnum <= 0) | |
10717 | { | |
10718 | if (instring && *instring) | |
10719 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10720 | instring); | |
10721 | else | |
10722 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10723 | return NULL; | |
10724 | } | |
10725 | ||
10726 | ALL_TRACEPOINTS (t) | |
10727 | if (t->number == tpnum) | |
10728 | { | |
10729 | return t; | |
10730 | } | |
10731 | ||
10732 | /* FIXME: if we are in the middle of a range we don't want to give | |
10733 | a message. The current interface to get_number_or_range doesn't | |
10734 | allow us to discover this. */ | |
10735 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10736 | return NULL; | |
10737 | } | |
10738 | ||
6149aea9 PA |
10739 | /* Save information on user settable breakpoints (watchpoints, etc) to |
10740 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
10741 | on each breakpoint and only include the ones for which it returns | |
10742 | non-zero. */ | |
10743 | ||
1042e4c0 | 10744 | static void |
6149aea9 PA |
10745 | save_breakpoints (char *filename, int from_tty, |
10746 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
10747 | { |
10748 | struct breakpoint *tp; | |
6149aea9 | 10749 | int any = 0; |
a7bdde9e | 10750 | char *pathname; |
1042e4c0 | 10751 | struct cleanup *cleanup; |
a7bdde9e | 10752 | struct ui_file *fp; |
6149aea9 | 10753 | int extra_trace_bits = 0; |
1042e4c0 | 10754 | |
6149aea9 PA |
10755 | if (filename == 0 || *filename == 0) |
10756 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
10757 | |
10758 | /* See if we have anything to save. */ | |
6149aea9 | 10759 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 10760 | { |
6149aea9 PA |
10761 | /* Skip internal and momentary breakpoints. */ |
10762 | if (!user_settable_breakpoint (tp)) | |
10763 | continue; | |
10764 | ||
10765 | /* If we have a filter, only save the breakpoints it accepts. */ | |
10766 | if (filter && !filter (tp)) | |
10767 | continue; | |
10768 | ||
10769 | any = 1; | |
10770 | ||
10771 | if (is_tracepoint (tp)) | |
10772 | { | |
10773 | extra_trace_bits = 1; | |
10774 | ||
10775 | /* We can stop searching. */ | |
10776 | break; | |
10777 | } | |
1042e4c0 | 10778 | } |
6149aea9 PA |
10779 | |
10780 | if (!any) | |
1042e4c0 | 10781 | { |
6149aea9 | 10782 | warning (_("Nothing to save.")); |
1042e4c0 SS |
10783 | return; |
10784 | } | |
10785 | ||
6149aea9 | 10786 | pathname = tilde_expand (filename); |
1042e4c0 | 10787 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 10788 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 10789 | if (!fp) |
6149aea9 PA |
10790 | error (_("Unable to open file '%s' for saving (%s)"), |
10791 | filename, safe_strerror (errno)); | |
a7bdde9e | 10792 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 10793 | |
6149aea9 PA |
10794 | if (extra_trace_bits) |
10795 | save_trace_state_variables (fp); | |
8bf6485c | 10796 | |
6149aea9 | 10797 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 10798 | { |
6149aea9 PA |
10799 | /* Skip internal and momentary breakpoints. */ |
10800 | if (!user_settable_breakpoint (tp)) | |
10801 | continue; | |
8bf6485c | 10802 | |
6149aea9 PA |
10803 | /* If we have a filter, only save the breakpoints it accepts. */ |
10804 | if (filter && !filter (tp)) | |
10805 | continue; | |
10806 | ||
10807 | if (tp->ops != NULL) | |
10808 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
10809 | else |
10810 | { | |
6149aea9 PA |
10811 | if (tp->type == bp_fast_tracepoint) |
10812 | fprintf_unfiltered (fp, "ftrace"); | |
10813 | else if (tp->type == bp_tracepoint) | |
10814 | fprintf_unfiltered (fp, "trace"); | |
10815 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
10816 | fprintf_unfiltered (fp, "tbreak"); | |
10817 | else if (tp->type == bp_breakpoint) | |
10818 | fprintf_unfiltered (fp, "break"); | |
10819 | else if (tp->type == bp_hardware_breakpoint | |
10820 | && tp->disposition == disp_del) | |
10821 | fprintf_unfiltered (fp, "thbreak"); | |
10822 | else if (tp->type == bp_hardware_breakpoint) | |
10823 | fprintf_unfiltered (fp, "hbreak"); | |
10824 | else if (tp->type == bp_watchpoint) | |
10825 | fprintf_unfiltered (fp, "watch"); | |
10826 | else if (tp->type == bp_hardware_watchpoint) | |
10827 | fprintf_unfiltered (fp, "watch"); | |
10828 | else if (tp->type == bp_read_watchpoint) | |
10829 | fprintf_unfiltered (fp, "rwatch"); | |
10830 | else if (tp->type == bp_access_watchpoint) | |
10831 | fprintf_unfiltered (fp, "awatch"); | |
10832 | else | |
10833 | internal_error (__FILE__, __LINE__, | |
10834 | _("unhandled breakpoint type %d"), (int) tp->type); | |
10835 | ||
10836 | if (tp->exp_string) | |
10837 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
10838 | else if (tp->addr_string) | |
10839 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
10840 | else | |
10841 | { | |
10842 | char tmp[40]; | |
10843 | ||
10844 | sprintf_vma (tmp, tp->loc->address); | |
10845 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
10846 | } | |
1042e4c0 SS |
10847 | } |
10848 | ||
6149aea9 PA |
10849 | if (tp->thread != -1) |
10850 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
10851 | ||
10852 | if (tp->task != 0) | |
10853 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
10854 | |
10855 | fprintf_unfiltered (fp, "\n"); | |
10856 | ||
6149aea9 PA |
10857 | /* Note, we can't rely on tp->number for anything, as we can't |
10858 | assume the recreated breakpoint numbers will match. Use $bpnum | |
10859 | instead. */ | |
10860 | ||
10861 | if (tp->cond_string) | |
10862 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
10863 | ||
10864 | if (tp->ignore_count) | |
10865 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
10866 | ||
1042e4c0 | 10867 | if (tp->pass_count) |
a7bdde9e | 10868 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 10869 | |
a7bdde9e | 10870 | if (tp->commands) |
1042e4c0 | 10871 | { |
a7bdde9e VP |
10872 | volatile struct gdb_exception ex; |
10873 | ||
6149aea9 | 10874 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
10875 | |
10876 | ui_out_redirect (uiout, fp); | |
10877 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1042e4c0 | 10878 | { |
9add0f1b | 10879 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
10880 | } |
10881 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 10882 | |
a7bdde9e VP |
10883 | if (ex.reason < 0) |
10884 | throw_exception (ex); | |
1042e4c0 | 10885 | |
a7bdde9e | 10886 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 10887 | } |
6149aea9 PA |
10888 | |
10889 | if (tp->enable_state == bp_disabled) | |
10890 | fprintf_unfiltered (fp, "disable\n"); | |
10891 | ||
10892 | /* If this is a multi-location breakpoint, check if the locations | |
10893 | should be individually disabled. Watchpoint locations are | |
10894 | special, and not user visible. */ | |
10895 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
10896 | { | |
10897 | struct bp_location *loc; | |
10898 | int n = 1; | |
10899 | ||
10900 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
10901 | if (!loc->enabled) | |
10902 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
10903 | } | |
1042e4c0 | 10904 | } |
8bf6485c | 10905 | |
6149aea9 | 10906 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
10907 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
10908 | ||
1042e4c0 SS |
10909 | do_cleanups (cleanup); |
10910 | if (from_tty) | |
6149aea9 PA |
10911 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
10912 | } | |
10913 | ||
10914 | /* The `save breakpoints' command. */ | |
10915 | ||
10916 | static void | |
10917 | save_breakpoints_command (char *args, int from_tty) | |
10918 | { | |
10919 | save_breakpoints (args, from_tty, NULL); | |
10920 | } | |
10921 | ||
10922 | /* The `save tracepoints' command. */ | |
10923 | ||
10924 | static void | |
10925 | save_tracepoints_command (char *args, int from_tty) | |
10926 | { | |
10927 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
10928 | } |
10929 | ||
10930 | /* Create a vector of all tracepoints. */ | |
10931 | ||
10932 | VEC(breakpoint_p) * | |
10933 | all_tracepoints () | |
10934 | { | |
10935 | VEC(breakpoint_p) *tp_vec = 0; | |
10936 | struct breakpoint *tp; | |
10937 | ||
10938 | ALL_TRACEPOINTS (tp) | |
10939 | { | |
10940 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
10941 | } | |
10942 | ||
10943 | return tp_vec; | |
10944 | } | |
10945 | ||
c906108c | 10946 | \f |
31e2b00f AS |
10947 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
10948 | It is defined as a macro to prevent duplication. | |
10949 | COMMAND should be a string constant containing the name of the command. */ | |
10950 | #define BREAK_ARGS_HELP(command) \ | |
10951 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
10952 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
10953 | If a line number is specified, break at start of code for that line.\n\ | |
10954 | If a function is specified, break at start of code for that function.\n\ | |
10955 | If an address is specified, break at that exact address.\n\ | |
10956 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
10957 | This is useful for breaking on return to a stack frame.\n\ | |
10958 | \n\ | |
10959 | THREADNUM is the number from \"info threads\".\n\ | |
10960 | CONDITION is a boolean expression.\n\ | |
10961 | \n\ | |
10962 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
10963 | \n\ | |
10964 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
10965 | ||
44feb3ce TT |
10966 | /* List of subcommands for "catch". */ |
10967 | static struct cmd_list_element *catch_cmdlist; | |
10968 | ||
10969 | /* List of subcommands for "tcatch". */ | |
10970 | static struct cmd_list_element *tcatch_cmdlist; | |
10971 | ||
10972 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
10973 | lists, and pass some additional user data to the command function. */ | |
10974 | static void | |
10975 | add_catch_command (char *name, char *docstring, | |
10976 | void (*sfunc) (char *args, int from_tty, | |
10977 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
10978 | char **(*completer) (struct cmd_list_element *cmd, |
10979 | char *text, char *word), | |
44feb3ce TT |
10980 | void *user_data_catch, |
10981 | void *user_data_tcatch) | |
10982 | { | |
10983 | struct cmd_list_element *command; | |
10984 | ||
10985 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10986 | &catch_cmdlist); | |
10987 | set_cmd_sfunc (command, sfunc); | |
10988 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 10989 | set_cmd_completer (command, completer); |
44feb3ce TT |
10990 | |
10991 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10992 | &tcatch_cmdlist); | |
10993 | set_cmd_sfunc (command, sfunc); | |
10994 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 10995 | set_cmd_completer (command, completer); |
44feb3ce TT |
10996 | } |
10997 | ||
6c95b8df | 10998 | static void |
a79b8f6e | 10999 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 11000 | { |
6c95b8df PA |
11001 | inf->total_syscalls_count = 0; |
11002 | inf->any_syscall_count = 0; | |
11003 | VEC_free (int, inf->syscalls_counts); | |
11004 | } | |
11005 | ||
6149aea9 PA |
11006 | static void |
11007 | save_command (char *arg, int from_tty) | |
11008 | { | |
11009 | printf_unfiltered (_("\ | |
11010 | \"save\" must be followed by the name of a save subcommand.\n")); | |
11011 | help_list (save_cmdlist, "save ", -1, gdb_stdout); | |
11012 | } | |
11013 | ||
c906108c | 11014 | void |
fba45db2 | 11015 | _initialize_breakpoint (void) |
c906108c SS |
11016 | { |
11017 | struct cmd_list_element *c; | |
11018 | ||
84acb35a | 11019 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 11020 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 11021 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 11022 | |
c906108c SS |
11023 | breakpoint_chain = 0; |
11024 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
11025 | before a breakpoint is set. */ | |
11026 | breakpoint_count = 0; | |
11027 | ||
1042e4c0 SS |
11028 | tracepoint_count = 0; |
11029 | ||
1bedd215 AC |
11030 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
11031 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
11032 | Usage is `ignore N COUNT'.")); | |
c906108c | 11033 | if (xdb_commands) |
c5aa993b | 11034 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 11035 | |
1bedd215 AC |
11036 | add_com ("commands", class_breakpoint, commands_command, _("\ |
11037 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
11038 | Give breakpoint number as argument after \"commands\".\n\ |
11039 | With no argument, the targeted breakpoint is the last one set.\n\ | |
11040 | The commands themselves follow starting on the next line.\n\ | |
11041 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11042 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11043 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11044 | |
1bedd215 AC |
11045 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11046 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11047 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11048 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11049 | |
1bedd215 | 11050 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11051 | Set a temporary breakpoint.\n\ |
c906108c SS |
11052 | Like \"break\" except the breakpoint is only temporary,\n\ |
11053 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11054 | by using \"enable delete\" on the breakpoint number.\n\ |
11055 | \n" | |
11056 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11057 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11058 | |
1bedd215 | 11059 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11060 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11061 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11062 | some target hardware may not have this support.\n\ |
11063 | \n" | |
11064 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11065 | set_cmd_completer (c, location_completer); |
c906108c | 11066 | |
1bedd215 | 11067 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11068 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11069 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11070 | so it will be deleted when hit.\n\ |
11071 | \n" | |
11072 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11073 | set_cmd_completer (c, location_completer); |
c906108c | 11074 | |
1bedd215 AC |
11075 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11076 | Enable some breakpoints.\n\ | |
c906108c SS |
11077 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11078 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11079 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11080 | With a subcommand you can enable temporarily."), |
c906108c SS |
11081 | &enablelist, "enable ", 1, &cmdlist); |
11082 | if (xdb_commands) | |
1bedd215 AC |
11083 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11084 | Enable some breakpoints.\n\ | |
c906108c SS |
11085 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11086 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11087 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11088 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11089 | |
11090 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11091 | ||
1bedd215 AC |
11092 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
11093 | Enable some breakpoints.\n\ | |
c906108c SS |
11094 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11095 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11096 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11097 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11098 | |
1a966eab AC |
11099 | add_cmd ("once", no_class, enable_once_command, _("\ |
11100 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11101 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11102 | &enablebreaklist); |
11103 | ||
1a966eab AC |
11104 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11105 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11106 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11107 | &enablebreaklist); |
11108 | ||
1a966eab AC |
11109 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11110 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11111 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11112 | &enablelist); |
11113 | ||
1a966eab AC |
11114 | add_cmd ("once", no_class, enable_once_command, _("\ |
11115 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11116 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11117 | &enablelist); |
11118 | ||
1bedd215 AC |
11119 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
11120 | Disable some breakpoints.\n\ | |
c906108c SS |
11121 | Arguments are breakpoint numbers with spaces in between.\n\ |
11122 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11123 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
11124 | &disablelist, "disable ", 1, &cmdlist); |
11125 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
11126 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
11127 | if (xdb_commands) | |
1bedd215 AC |
11128 | add_com ("sb", class_breakpoint, disable_command, _("\ |
11129 | Disable some breakpoints.\n\ | |
c906108c SS |
11130 | Arguments are breakpoint numbers with spaces in between.\n\ |
11131 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11132 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 11133 | |
1a966eab AC |
11134 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
11135 | Disable some breakpoints.\n\ | |
c906108c SS |
11136 | Arguments are breakpoint numbers with spaces in between.\n\ |
11137 | To disable all breakpoints, give no argument.\n\ | |
11138 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 11139 | This command may be abbreviated \"disable\"."), |
c906108c SS |
11140 | &disablelist); |
11141 | ||
1bedd215 AC |
11142 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
11143 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11144 | Arguments are breakpoint numbers with spaces in between.\n\ |
11145 | To delete all breakpoints, give no argument.\n\ | |
11146 | \n\ | |
11147 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 11148 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
11149 | &deletelist, "delete ", 1, &cmdlist); |
11150 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 11151 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 11152 | if (xdb_commands) |
1bedd215 AC |
11153 | add_com ("db", class_breakpoint, delete_command, _("\ |
11154 | Delete some breakpoints.\n\ | |
c906108c | 11155 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 11156 | To delete all breakpoints, give no argument.\n")); |
c906108c | 11157 | |
1a966eab AC |
11158 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
11159 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11160 | Arguments are breakpoint numbers with spaces in between.\n\ |
11161 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 11162 | This command may be abbreviated \"delete\"."), |
c906108c SS |
11163 | &deletelist); |
11164 | ||
1bedd215 AC |
11165 | add_com ("clear", class_breakpoint, clear_command, _("\ |
11166 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
11167 | Argument may be line number, function name, or \"*\" and an address.\n\ |
11168 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
11169 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
11170 | If an address is specified, breakpoints at that address are cleared.\n\ |
11171 | \n\ | |
11172 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
11173 | is executing in.\n\ |
11174 | \n\ | |
1bedd215 | 11175 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 11176 | |
1bedd215 | 11177 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
11178 | Set breakpoint at specified line or function.\n" |
11179 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 11180 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11181 | |
c906108c SS |
11182 | add_com_alias ("b", "break", class_run, 1); |
11183 | add_com_alias ("br", "break", class_run, 1); | |
11184 | add_com_alias ("bre", "break", class_run, 1); | |
11185 | add_com_alias ("brea", "break", class_run, 1); | |
11186 | ||
7681d515 PM |
11187 | if (xdb_commands) |
11188 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
11189 | |
11190 | if (dbx_commands) | |
11191 | { | |
1bedd215 AC |
11192 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
11193 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
11194 | &stoplist, "stop ", 1, &cmdlist); |
11195 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 11196 | _("Break in function or address."), &stoplist); |
c5aa993b | 11197 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 11198 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
11199 | add_com ("status", class_info, breakpoints_info, _("\ |
11200 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11201 | The \"Type\" column indicates one of:\n\ |
11202 | \tbreakpoint - normal breakpoint\n\ | |
11203 | \twatchpoint - watchpoint\n\ | |
11204 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11205 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11206 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11207 | address and file/line number respectively.\n\ |
11208 | \n\ | |
11209 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11210 | are set to the address of the last breakpoint listed unless the command\n\ |
11211 | is prefixed with \"server \".\n\n\ | |
c906108c | 11212 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11213 | breakpoint set.")); |
c906108c SS |
11214 | } |
11215 | ||
1bedd215 AC |
11216 | add_info ("breakpoints", breakpoints_info, _("\ |
11217 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11218 | The \"Type\" column indicates one of:\n\ |
11219 | \tbreakpoint - normal breakpoint\n\ | |
11220 | \twatchpoint - watchpoint\n\ | |
11221 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11222 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11223 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11224 | address and file/line number respectively.\n\ |
11225 | \n\ | |
11226 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11227 | are set to the address of the last breakpoint listed unless the command\n\ |
11228 | is prefixed with \"server \".\n\n\ | |
c906108c | 11229 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11230 | breakpoint set.")); |
c906108c | 11231 | |
6b04bdb7 MS |
11232 | add_info_alias ("b", "breakpoints", 1); |
11233 | ||
c906108c | 11234 | if (xdb_commands) |
1bedd215 AC |
11235 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
11236 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11237 | The \"Type\" column indicates one of:\n\ |
11238 | \tbreakpoint - normal breakpoint\n\ | |
11239 | \twatchpoint - watchpoint\n\ | |
11240 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11241 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11242 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11243 | address and file/line number respectively.\n\ |
11244 | \n\ | |
11245 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11246 | are set to the address of the last breakpoint listed unless the command\n\ |
11247 | is prefixed with \"server \".\n\n\ | |
c906108c | 11248 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11249 | breakpoint set.")); |
c906108c | 11250 | |
1a966eab AC |
11251 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
11252 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11253 | The \"Type\" column indicates one of:\n\ |
11254 | \tbreakpoint - normal breakpoint\n\ | |
11255 | \twatchpoint - watchpoint\n\ | |
11256 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
11257 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
11258 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
11259 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
11260 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
11261 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
11262 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
11263 | address and file/line number respectively.\n\ |
11264 | \n\ | |
11265 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11266 | are set to the address of the last breakpoint listed unless the command\n\ |
11267 | is prefixed with \"server \".\n\n\ | |
c906108c | 11268 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 11269 | breakpoint set."), |
c906108c SS |
11270 | &maintenanceinfolist); |
11271 | ||
44feb3ce TT |
11272 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
11273 | Set catchpoints to catch events."), | |
11274 | &catch_cmdlist, "catch ", | |
11275 | 0/*allow-unknown*/, &cmdlist); | |
11276 | ||
11277 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
11278 | Set temporary catchpoints to catch events."), | |
11279 | &tcatch_cmdlist, "tcatch ", | |
11280 | 0/*allow-unknown*/, &cmdlist); | |
11281 | ||
11282 | /* Add catch and tcatch sub-commands. */ | |
11283 | add_catch_command ("catch", _("\ | |
11284 | Catch an exception, when caught.\n\ | |
11285 | With an argument, catch only exceptions with the given name."), | |
11286 | catch_catch_command, | |
a96d9b2e | 11287 | NULL, |
44feb3ce TT |
11288 | CATCH_PERMANENT, |
11289 | CATCH_TEMPORARY); | |
11290 | add_catch_command ("throw", _("\ | |
11291 | Catch an exception, when thrown.\n\ | |
11292 | With an argument, catch only exceptions with the given name."), | |
11293 | catch_throw_command, | |
a96d9b2e | 11294 | NULL, |
44feb3ce TT |
11295 | CATCH_PERMANENT, |
11296 | CATCH_TEMPORARY); | |
11297 | add_catch_command ("fork", _("Catch calls to fork."), | |
11298 | catch_fork_command_1, | |
a96d9b2e | 11299 | NULL, |
44feb3ce TT |
11300 | (void *) (uintptr_t) catch_fork_permanent, |
11301 | (void *) (uintptr_t) catch_fork_temporary); | |
11302 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
11303 | catch_fork_command_1, | |
a96d9b2e | 11304 | NULL, |
44feb3ce TT |
11305 | (void *) (uintptr_t) catch_vfork_permanent, |
11306 | (void *) (uintptr_t) catch_vfork_temporary); | |
11307 | add_catch_command ("exec", _("Catch calls to exec."), | |
11308 | catch_exec_command_1, | |
a96d9b2e SDJ |
11309 | NULL, |
11310 | CATCH_PERMANENT, | |
11311 | CATCH_TEMPORARY); | |
11312 | add_catch_command ("syscall", _("\ | |
11313 | Catch system calls by their names and/or numbers.\n\ | |
11314 | Arguments say which system calls to catch. If no arguments\n\ | |
11315 | are given, every system call will be caught.\n\ | |
11316 | Arguments, if given, should be one or more system call names\n\ | |
11317 | (if your system supports that), or system call numbers."), | |
11318 | catch_syscall_command_1, | |
11319 | catch_syscall_completer, | |
44feb3ce TT |
11320 | CATCH_PERMANENT, |
11321 | CATCH_TEMPORARY); | |
44feb3ce TT |
11322 | add_catch_command ("exception", _("\ |
11323 | Catch Ada exceptions, when raised.\n\ | |
11324 | With an argument, catch only exceptions with the given name."), | |
11325 | catch_ada_exception_command, | |
a96d9b2e | 11326 | NULL, |
44feb3ce TT |
11327 | CATCH_PERMANENT, |
11328 | CATCH_TEMPORARY); | |
11329 | add_catch_command ("assert", _("\ | |
11330 | Catch failed Ada assertions, when raised.\n\ | |
11331 | With an argument, catch only exceptions with the given name."), | |
11332 | catch_assert_command, | |
a96d9b2e | 11333 | NULL, |
44feb3ce TT |
11334 | CATCH_PERMANENT, |
11335 | CATCH_TEMPORARY); | |
c5aa993b | 11336 | |
1bedd215 AC |
11337 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
11338 | Set a watchpoint for an expression.\n\ | |
c906108c | 11339 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11340 | an expression changes.")); |
65d12d83 | 11341 | set_cmd_completer (c, expression_completer); |
c906108c | 11342 | |
1bedd215 AC |
11343 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
11344 | Set a read watchpoint for an expression.\n\ | |
c906108c | 11345 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11346 | an expression is read.")); |
65d12d83 | 11347 | set_cmd_completer (c, expression_completer); |
c906108c | 11348 | |
1bedd215 AC |
11349 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
11350 | Set a watchpoint for an expression.\n\ | |
c906108c | 11351 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11352 | an expression is either read or written.")); |
65d12d83 | 11353 | set_cmd_completer (c, expression_completer); |
c906108c | 11354 | |
d77f58be SS |
11355 | add_info ("watchpoints", watchpoints_info, _("\ |
11356 | Status of watchpoints, or watchpoint number NUMBER.")); | |
11357 | ||
c906108c SS |
11358 | |
11359 | ||
920d2a44 AC |
11360 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
11361 | respond to changes - contrary to the description. */ | |
85c07804 AC |
11362 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
11363 | &can_use_hw_watchpoints, _("\ | |
11364 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
11365 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
11366 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
11367 | such is available. (However, any hardware watchpoints that were\n\ | |
11368 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
11369 | hardware.)"), |
11370 | NULL, | |
920d2a44 | 11371 | show_can_use_hw_watchpoints, |
85c07804 | 11372 | &setlist, &showlist); |
c906108c SS |
11373 | |
11374 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 11375 | |
1042e4c0 SS |
11376 | /* Tracepoint manipulation commands. */ |
11377 | ||
11378 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
11379 | Set a tracepoint at specified line or function.\n\ | |
11380 | \n" | |
11381 | BREAK_ARGS_HELP ("trace") "\n\ | |
11382 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11383 | set_cmd_completer (c, location_completer); | |
11384 | ||
11385 | add_com_alias ("tp", "trace", class_alias, 0); | |
11386 | add_com_alias ("tr", "trace", class_alias, 1); | |
11387 | add_com_alias ("tra", "trace", class_alias, 1); | |
11388 | add_com_alias ("trac", "trace", class_alias, 1); | |
11389 | ||
7a697b8d SS |
11390 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
11391 | Set a fast tracepoint at specified line or function.\n\ | |
11392 | \n" | |
11393 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
11394 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11395 | set_cmd_completer (c, location_completer); | |
11396 | ||
1042e4c0 SS |
11397 | add_info ("tracepoints", tracepoints_info, _("\ |
11398 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
11399 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
11400 | last tracepoint set.")); | |
11401 | ||
11402 | add_info_alias ("tp", "tracepoints", 1); | |
11403 | ||
11404 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
11405 | Delete specified tracepoints.\n\ | |
11406 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11407 | No argument means delete all tracepoints."), | |
11408 | &deletelist); | |
11409 | ||
11410 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
11411 | Disable specified tracepoints.\n\ | |
11412 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11413 | No argument means disable all tracepoints."), | |
11414 | &disablelist); | |
11415 | deprecate_cmd (c, "disable"); | |
11416 | ||
11417 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
11418 | Enable specified tracepoints.\n\ | |
11419 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11420 | No argument means enable all tracepoints."), | |
11421 | &enablelist); | |
11422 | deprecate_cmd (c, "enable"); | |
11423 | ||
11424 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
11425 | Set the passcount for a tracepoint.\n\ | |
11426 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
11427 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
11428 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
11429 | ||
6149aea9 PA |
11430 | add_prefix_cmd ("save", class_breakpoint, save_command, |
11431 | _("Save breakpoint definitions as a script."), | |
11432 | &save_cmdlist, "save ", | |
11433 | 0/*allow-unknown*/, &cmdlist); | |
11434 | ||
11435 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
11436 | Save current breakpoint definitions as a script.\n\ | |
11437 | This includes all types of breakpoints (breakpoints, watchpoints, \n\ | |
11438 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ | |
11439 | session to restore them."), | |
11440 | &save_cmdlist); | |
11441 | set_cmd_completer (c, filename_completer); | |
11442 | ||
11443 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 11444 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
11445 | Use the 'source' command in another debug session to restore them."), |
11446 | &save_cmdlist); | |
1042e4c0 SS |
11447 | set_cmd_completer (c, filename_completer); |
11448 | ||
6149aea9 PA |
11449 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
11450 | deprecate_cmd (c, "save tracepoints"); | |
11451 | ||
1bedd215 | 11452 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11453 | Breakpoint specific settings\n\ |
11454 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11455 | pending breakpoint behavior"), |
fa8d40ab JJ |
11456 | &breakpoint_set_cmdlist, "set breakpoint ", |
11457 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 11458 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11459 | Breakpoint specific settings\n\ |
11460 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11461 | pending breakpoint behavior"), |
fa8d40ab JJ |
11462 | &breakpoint_show_cmdlist, "show breakpoint ", |
11463 | 0/*allow-unknown*/, &showlist); | |
11464 | ||
7915a72c AC |
11465 | add_setshow_auto_boolean_cmd ("pending", no_class, |
11466 | &pending_break_support, _("\ | |
11467 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
11468 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
11469 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
11470 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
11471 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 11472 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 11473 | NULL, |
920d2a44 | 11474 | show_pending_break_support, |
6e1d7d6c AC |
11475 | &breakpoint_set_cmdlist, |
11476 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
11477 | |
11478 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
11479 | |
11480 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
11481 | &automatic_hardware_breakpoints, _("\ | |
11482 | Set automatic usage of hardware breakpoints."), _("\ | |
11483 | Show automatic usage of hardware breakpoints."), _("\ | |
11484 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
11485 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
11486 | a warning will be emitted for such breakpoints."), | |
11487 | NULL, | |
11488 | show_automatic_hardware_breakpoints, | |
11489 | &breakpoint_set_cmdlist, | |
11490 | &breakpoint_show_cmdlist); | |
74960c60 | 11491 | |
33e5cbd6 PA |
11492 | add_setshow_enum_cmd ("always-inserted", class_support, |
11493 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
11494 | Set mode for inserting breakpoints."), _("\ |
11495 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
11496 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
11497 | resumed, and removed when execution stops. When this mode is on,\n\ | |
11498 | breakpoints are inserted immediately and removed only when the user\n\ | |
11499 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
11500 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
11501 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
11502 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
11503 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
11504 | NULL, |
11505 | &show_always_inserted_mode, | |
11506 | &breakpoint_set_cmdlist, | |
11507 | &breakpoint_show_cmdlist); | |
765dc015 VP |
11508 | |
11509 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
11510 | |
11511 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 11512 | } |