]>
Commit | Line | Data |
---|---|---|
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" |
65d79d4b | 64 | #include "parser-defs.h" |
c906108c | 65 | |
1042e4c0 SS |
66 | /* readline include files */ |
67 | #include "readline/readline.h" | |
68 | #include "readline/history.h" | |
69 | ||
70 | /* readline defines this. */ | |
71 | #undef savestring | |
72 | ||
034dad6f | 73 | #include "mi/mi-common.h" |
104c1213 | 74 | |
44feb3ce TT |
75 | /* Arguments to pass as context to some catch command handlers. */ |
76 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
77 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 78 | |
44feb3ce | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
a14ed312 | 97 | static void clear_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void catch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static void watch_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 104 | |
98deb0da | 105 | static void break_command_1 (char *, int, int); |
c906108c | 106 | |
a14ed312 | 107 | static void mention (struct breakpoint *); |
c906108c | 108 | |
63c252f8 PM |
109 | /* This function is used in gdbtk sources and thus can not be made static. */ |
110 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
111 | struct symtab_and_line, |
112 | enum bptype); | |
c906108c | 113 | |
76897487 KB |
114 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
115 | ||
a6d9a66e UW |
116 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
117 | CORE_ADDR bpaddr, | |
88f7da05 | 118 | enum bptype bptype); |
76897487 | 119 | |
6c95b8df PA |
120 | static void describe_other_breakpoints (struct gdbarch *, |
121 | struct program_space *, CORE_ADDR, | |
5af949e3 | 122 | struct obj_section *, int); |
c906108c | 123 | |
6c95b8df PA |
124 | static int breakpoint_address_match (struct address_space *aspace1, |
125 | CORE_ADDR addr1, | |
126 | struct address_space *aspace2, | |
127 | CORE_ADDR addr2); | |
128 | ||
85d721b8 PA |
129 | static int watchpoint_locations_match (struct bp_location *loc1, |
130 | struct bp_location *loc2); | |
131 | ||
a14ed312 | 132 | static void breakpoints_info (char *, int); |
c906108c | 133 | |
d77f58be SS |
134 | static void watchpoints_info (char *, int); |
135 | ||
136 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 137 | |
89f9893c | 138 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 139 | |
4efb68b1 | 140 | static int breakpoint_cond_eval (void *); |
c906108c | 141 | |
4efb68b1 | 142 | static void cleanup_executing_breakpoints (void *); |
c906108c | 143 | |
a14ed312 | 144 | static void commands_command (char *, int); |
c906108c | 145 | |
a14ed312 | 146 | static void condition_command (char *, int); |
c906108c | 147 | |
a14ed312 | 148 | static int get_number_trailer (char **, int); |
c906108c | 149 | |
c5aa993b JM |
150 | typedef enum |
151 | { | |
152 | mark_inserted, | |
153 | mark_uninserted | |
154 | } | |
155 | insertion_state_t; | |
c906108c | 156 | |
0bde7532 | 157 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 158 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 159 | |
a14ed312 | 160 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
161 | |
162 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 163 | |
4efb68b1 | 164 | static int watchpoint_check (void *); |
c906108c | 165 | |
a14ed312 | 166 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static int hw_breakpoint_used_count (void); |
c906108c | 169 | |
a14ed312 | 170 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 171 | |
a14ed312 | 172 | static void hbreak_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void thbreak_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static void watch_command_1 (char *, int, int); |
c906108c | 177 | |
a14ed312 | 178 | static void rwatch_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static void awatch_command (char *, int); |
c906108c | 181 | |
a14ed312 | 182 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 183 | |
a14ed312 | 184 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 191 | |
d85310f7 MS |
192 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
193 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 194 | |
a14ed312 | 195 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 196 | |
a14ed312 | 197 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 198 | |
d03285ec UW |
199 | static void detach_single_step_breakpoints (void); |
200 | ||
6c95b8df PA |
201 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
202 | CORE_ADDR pc); | |
1aafd4da | 203 | |
fe3f5fa8 VP |
204 | static void free_bp_location (struct bp_location *loc); |
205 | ||
39d61571 | 206 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 207 | |
b60e7edf | 208 | static void update_global_location_list (int); |
a5606eee | 209 | |
b60e7edf | 210 | static void update_global_location_list_nothrow (int); |
74960c60 | 211 | |
1a2ab13a JK |
212 | static int bpstat_remove_bp_location_callback (struct thread_info *th, |
213 | void *data); | |
214 | ||
d77f58be | 215 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 216 | |
d77f58be | 217 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 218 | |
74960c60 | 219 | static void insert_breakpoint_locations (void); |
a5606eee | 220 | |
a96d9b2e SDJ |
221 | static int syscall_catchpoint_p (struct breakpoint *b); |
222 | ||
1042e4c0 SS |
223 | static void tracepoints_info (char *, int); |
224 | ||
225 | static void delete_trace_command (char *, int); | |
226 | ||
227 | static void enable_trace_command (char *, int); | |
228 | ||
229 | static void disable_trace_command (char *, int); | |
230 | ||
231 | static void trace_pass_command (char *, int); | |
232 | ||
5cea2a26 PA |
233 | /* A reference-counted struct command_line. This lets multiple |
234 | breakpoints share a single command list. */ | |
235 | struct counted_command_line | |
236 | { | |
237 | /* The reference count. */ | |
238 | int refc; | |
239 | ||
240 | /* The command list. */ | |
241 | struct command_line *commands; | |
242 | }; | |
243 | ||
244 | struct command_line * | |
245 | breakpoint_commands (struct breakpoint *b) | |
246 | { | |
247 | return b->commands ? b->commands->commands : NULL; | |
248 | } | |
3daf8fe5 | 249 | |
f3b1572e PA |
250 | /* Flag indicating that a command has proceeded the inferior past the |
251 | current breakpoint. */ | |
252 | ||
253 | static int breakpoint_proceeded; | |
254 | ||
2cec12e5 AR |
255 | static const char * |
256 | bpdisp_text (enum bpdisp disp) | |
257 | { | |
258 | /* NOTE: the following values are a part of MI protocol and represent | |
259 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
260 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
cc59ec59 | 261 | |
2cec12e5 AR |
262 | return bpdisps[(int) disp]; |
263 | } | |
c906108c | 264 | |
2cec12e5 | 265 | /* Prototypes for exported functions. */ |
c906108c SS |
266 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
267 | if such is available. */ | |
268 | static int can_use_hw_watchpoints; | |
269 | ||
920d2a44 AC |
270 | static void |
271 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
272 | struct cmd_list_element *c, | |
273 | const char *value) | |
274 | { | |
275 | fprintf_filtered (file, _("\ | |
276 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
277 | value); | |
278 | } | |
279 | ||
fa8d40ab JJ |
280 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
281 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
282 | for unrecognized breakpoint locations. | |
283 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
284 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
285 | static void |
286 | show_pending_break_support (struct ui_file *file, int from_tty, | |
287 | struct cmd_list_element *c, | |
288 | const char *value) | |
289 | { | |
290 | fprintf_filtered (file, _("\ | |
291 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
292 | value); | |
293 | } | |
fa8d40ab | 294 | |
765dc015 VP |
295 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
296 | set with "break" but falling in read-only memory. | |
297 | If 0, gdb will warn about such breakpoints, but won't automatically | |
298 | use hardware breakpoints. */ | |
299 | static int automatic_hardware_breakpoints; | |
300 | static void | |
301 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
302 | struct cmd_list_element *c, | |
303 | const char *value) | |
304 | { | |
305 | fprintf_filtered (file, _("\ | |
306 | Automatic usage of hardware breakpoints is %s.\n"), | |
307 | value); | |
308 | } | |
309 | ||
33e5cbd6 PA |
310 | /* If on, gdb will keep breakpoints inserted even as inferior is |
311 | stopped, and immediately insert any new breakpoints. If off, gdb | |
312 | will insert breakpoints into inferior only when resuming it, and | |
313 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
314 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
315 | ||
316 | static const char always_inserted_auto[] = "auto"; | |
317 | static const char always_inserted_on[] = "on"; | |
318 | static const char always_inserted_off[] = "off"; | |
319 | static const char *always_inserted_enums[] = { | |
320 | always_inserted_auto, | |
321 | always_inserted_off, | |
322 | always_inserted_on, | |
323 | NULL | |
324 | }; | |
325 | static const char *always_inserted_mode = always_inserted_auto; | |
326 | static void | |
74960c60 | 327 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 328 | struct cmd_list_element *c, const char *value) |
74960c60 | 329 | { |
33e5cbd6 PA |
330 | if (always_inserted_mode == always_inserted_auto) |
331 | fprintf_filtered (file, _("\ | |
332 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
333 | value, | |
334 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
335 | else | |
336 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
337 | } |
338 | ||
33e5cbd6 PA |
339 | int |
340 | breakpoints_always_inserted_mode (void) | |
341 | { | |
342 | return (always_inserted_mode == always_inserted_on | |
343 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
344 | } | |
765dc015 | 345 | |
a14ed312 | 346 | void _initialize_breakpoint (void); |
c906108c | 347 | |
c906108c SS |
348 | /* Are we executing breakpoint commands? */ |
349 | static int executing_breakpoint_commands; | |
350 | ||
c02f5703 MS |
351 | /* Are overlay event breakpoints enabled? */ |
352 | static int overlay_events_enabled; | |
353 | ||
c906108c SS |
354 | /* Walk the following statement or block through all breakpoints. |
355 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
356 | breakpoint. */ | |
357 | ||
5c44784c | 358 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 359 | |
5c44784c JM |
360 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
361 | for (B = breakpoint_chain; \ | |
362 | B ? (TMP=B->next, 1): 0; \ | |
363 | B = TMP) | |
c906108c | 364 | |
876fa593 JK |
365 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
366 | provided so update_global_location_list must not be called while executing | |
367 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 368 | |
876fa593 JK |
369 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
370 | for (BP_TMP = bp_location; \ | |
371 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
372 | BP_TMP++) | |
7cc221ef | 373 | |
1042e4c0 SS |
374 | /* Iterator for tracepoints only. */ |
375 | ||
376 | #define ALL_TRACEPOINTS(B) \ | |
377 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 378 | if (is_tracepoint (B)) |
1042e4c0 | 379 | |
7cc221ef | 380 | /* Chains of all breakpoints defined. */ |
c906108c SS |
381 | |
382 | struct breakpoint *breakpoint_chain; | |
383 | ||
876fa593 JK |
384 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
385 | ||
386 | static struct bp_location **bp_location; | |
387 | ||
388 | /* Number of elements of BP_LOCATION. */ | |
389 | ||
390 | static unsigned bp_location_count; | |
391 | ||
392 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
393 | for the current elements of BP_LOCATION which get a valid result from | |
394 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
395 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
396 | ||
397 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
398 | ||
399 | /* Maximum offset plus alignment between | |
400 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
401 | the current elements of BP_LOCATION which get a valid result from | |
402 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
403 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
404 | ||
405 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 406 | |
20874c92 | 407 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 408 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
409 | may still be reported by a target. */ |
410 | VEC(bp_location_p) *moribund_locations = NULL; | |
411 | ||
c906108c SS |
412 | /* Number of last breakpoint made. */ |
413 | ||
95a42b64 TT |
414 | static int breakpoint_count; |
415 | ||
86b17b60 PA |
416 | /* The value of `breakpoint_count' before the last command that |
417 | created breakpoints. If the last (break-like) command created more | |
418 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
419 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
420 | static int prev_breakpoint_count; | |
c906108c | 421 | |
1042e4c0 SS |
422 | /* Number of last tracepoint made. */ |
423 | ||
95a42b64 | 424 | static int tracepoint_count; |
1042e4c0 | 425 | |
6149aea9 PA |
426 | static struct cmd_list_element *breakpoint_set_cmdlist; |
427 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
428 | static struct cmd_list_element *save_cmdlist; | |
429 | ||
468d015d JJ |
430 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
431 | static int | |
432 | breakpoint_enabled (struct breakpoint *b) | |
433 | { | |
0d381245 | 434 | return (b->enable_state == bp_enabled); |
468d015d JJ |
435 | } |
436 | ||
c906108c SS |
437 | /* Set breakpoint count to NUM. */ |
438 | ||
95a42b64 | 439 | static void |
fba45db2 | 440 | set_breakpoint_count (int num) |
c906108c | 441 | { |
86b17b60 | 442 | prev_breakpoint_count = breakpoint_count; |
c906108c | 443 | breakpoint_count = num; |
4fa62494 | 444 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
445 | } |
446 | ||
86b17b60 PA |
447 | /* Used by `start_rbreak_breakpoints' below, to record the current |
448 | breakpoint count before "rbreak" creates any breakpoint. */ | |
449 | static int rbreak_start_breakpoint_count; | |
450 | ||
95a42b64 TT |
451 | /* Called at the start an "rbreak" command to record the first |
452 | breakpoint made. */ | |
86b17b60 | 453 | |
95a42b64 TT |
454 | void |
455 | start_rbreak_breakpoints (void) | |
456 | { | |
86b17b60 | 457 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
458 | } |
459 | ||
460 | /* Called at the end of an "rbreak" command to record the last | |
461 | breakpoint made. */ | |
86b17b60 | 462 | |
95a42b64 TT |
463 | void |
464 | end_rbreak_breakpoints (void) | |
465 | { | |
86b17b60 | 466 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
467 | } |
468 | ||
c906108c SS |
469 | /* Used in run_command to zero the hit count when a new run starts. */ |
470 | ||
471 | void | |
fba45db2 | 472 | clear_breakpoint_hit_counts (void) |
c906108c SS |
473 | { |
474 | struct breakpoint *b; | |
475 | ||
476 | ALL_BREAKPOINTS (b) | |
477 | b->hit_count = 0; | |
478 | } | |
479 | ||
9add0f1b TT |
480 | /* Allocate a new counted_command_line with reference count of 1. |
481 | The new structure owns COMMANDS. */ | |
482 | ||
483 | static struct counted_command_line * | |
484 | alloc_counted_command_line (struct command_line *commands) | |
485 | { | |
486 | struct counted_command_line *result | |
487 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 488 | |
9add0f1b TT |
489 | result->refc = 1; |
490 | result->commands = commands; | |
491 | return result; | |
492 | } | |
493 | ||
494 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
495 | ||
496 | static void | |
497 | incref_counted_command_line (struct counted_command_line *cmd) | |
498 | { | |
499 | if (cmd) | |
500 | ++cmd->refc; | |
501 | } | |
502 | ||
503 | /* Decrement reference count. If the reference count reaches 0, | |
504 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
505 | nothing if *CMDP is NULL. */ | |
506 | ||
507 | static void | |
508 | decref_counted_command_line (struct counted_command_line **cmdp) | |
509 | { | |
510 | if (*cmdp) | |
511 | { | |
512 | if (--(*cmdp)->refc == 0) | |
513 | { | |
514 | free_command_lines (&(*cmdp)->commands); | |
515 | xfree (*cmdp); | |
516 | } | |
517 | *cmdp = NULL; | |
518 | } | |
519 | } | |
520 | ||
521 | /* A cleanup function that calls decref_counted_command_line. */ | |
522 | ||
523 | static void | |
524 | do_cleanup_counted_command_line (void *arg) | |
525 | { | |
526 | decref_counted_command_line (arg); | |
527 | } | |
528 | ||
529 | /* Create a cleanup that calls decref_counted_command_line on the | |
530 | argument. */ | |
531 | ||
532 | static struct cleanup * | |
533 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
534 | { | |
535 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
536 | } | |
537 | ||
c906108c SS |
538 | /* Default address, symtab and line to put a breakpoint at |
539 | for "break" command with no arg. | |
540 | if default_breakpoint_valid is zero, the other three are | |
541 | not valid, and "break" with no arg is an error. | |
542 | ||
543 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
544 | ||
545 | int default_breakpoint_valid; | |
546 | CORE_ADDR default_breakpoint_address; | |
547 | struct symtab *default_breakpoint_symtab; | |
548 | int default_breakpoint_line; | |
6c95b8df PA |
549 | struct program_space *default_breakpoint_pspace; |
550 | ||
c906108c SS |
551 | \f |
552 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
553 | Advance *PP after the string and any trailing whitespace. | |
554 | ||
555 | Currently the string can either be a number or "$" followed by the name | |
556 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 557 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
558 | |
559 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
560 | |
561 | TRAILER is a character which can be found after the number; most | |
562 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 563 | static int |
fba45db2 | 564 | get_number_trailer (char **pp, int trailer) |
c906108c | 565 | { |
5c44784c | 566 | int retval = 0; /* default */ |
c906108c SS |
567 | char *p = *pp; |
568 | ||
569 | if (p == NULL) | |
570 | /* Empty line means refer to the last breakpoint. */ | |
571 | return breakpoint_count; | |
572 | else if (*p == '$') | |
573 | { | |
574 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 575 | to pass to lookup_internalvar(). */ |
c906108c SS |
576 | char *varname; |
577 | char *start = ++p; | |
4fa62494 | 578 | LONGEST val; |
c906108c SS |
579 | |
580 | while (isalnum (*p) || *p == '_') | |
581 | p++; | |
582 | varname = (char *) alloca (p - start + 1); | |
583 | strncpy (varname, start, p - start); | |
584 | varname[p - start] = '\0'; | |
4fa62494 UW |
585 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
586 | retval = (int) val; | |
5c44784c JM |
587 | else |
588 | { | |
a3f17187 | 589 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
590 | retval = 0; |
591 | } | |
c906108c SS |
592 | } |
593 | else | |
594 | { | |
595 | if (*p == '-') | |
596 | ++p; | |
597 | while (*p >= '0' && *p <= '9') | |
598 | ++p; | |
599 | if (p == *pp) | |
600 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
601 | { |
602 | /* Skip non-numeric token */ | |
603 | while (*p && !isspace((int) *p)) | |
604 | ++p; | |
605 | /* Return zero, which caller must interpret as error. */ | |
606 | retval = 0; | |
607 | } | |
608 | else | |
609 | retval = atoi (*pp); | |
610 | } | |
611 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
612 | { | |
613 | /* Trailing junk: return 0 and let caller print error msg. */ | |
614 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
615 | ++p; | |
616 | retval = 0; | |
c906108c | 617 | } |
c906108c SS |
618 | while (isspace (*p)) |
619 | p++; | |
620 | *pp = p; | |
621 | return retval; | |
622 | } | |
5c44784c | 623 | |
11cf8741 | 624 | |
5c44784c JM |
625 | /* Like get_number_trailer, but don't allow a trailer. */ |
626 | int | |
fba45db2 | 627 | get_number (char **pp) |
5c44784c JM |
628 | { |
629 | return get_number_trailer (pp, '\0'); | |
630 | } | |
631 | ||
632 | /* Parse a number or a range. | |
633 | * A number will be of the form handled by get_number. | |
634 | * A range will be of the form <number1> - <number2>, and | |
635 | * will represent all the integers between number1 and number2, | |
636 | * inclusive. | |
637 | * | |
638 | * While processing a range, this fuction is called iteratively; | |
639 | * At each call it will return the next value in the range. | |
640 | * | |
641 | * At the beginning of parsing a range, the char pointer PP will | |
642 | * be advanced past <number1> and left pointing at the '-' token. | |
643 | * Subsequent calls will not advance the pointer until the range | |
644 | * is completed. The call that completes the range will advance | |
645 | * pointer PP past <number2>. | |
646 | */ | |
647 | ||
648 | int | |
fba45db2 | 649 | get_number_or_range (char **pp) |
5c44784c JM |
650 | { |
651 | static int last_retval, end_value; | |
652 | static char *end_ptr; | |
653 | static int in_range = 0; | |
654 | ||
655 | if (**pp != '-') | |
656 | { | |
657 | /* Default case: pp is pointing either to a solo number, | |
658 | or to the first number of a range. */ | |
659 | last_retval = get_number_trailer (pp, '-'); | |
660 | if (**pp == '-') | |
661 | { | |
662 | char **temp; | |
663 | ||
664 | /* This is the start of a range (<number1> - <number2>). | |
665 | Skip the '-', parse and remember the second number, | |
666 | and also remember the end of the final token. */ | |
667 | ||
668 | temp = &end_ptr; | |
669 | end_ptr = *pp + 1; | |
670 | while (isspace ((int) *end_ptr)) | |
671 | end_ptr++; /* skip white space */ | |
672 | end_value = get_number (temp); | |
673 | if (end_value < last_retval) | |
674 | { | |
8a3fe4f8 | 675 | error (_("inverted range")); |
5c44784c JM |
676 | } |
677 | else if (end_value == last_retval) | |
678 | { | |
679 | /* degenerate range (number1 == number2). Advance the | |
680 | token pointer so that the range will be treated as a | |
681 | single number. */ | |
682 | *pp = end_ptr; | |
683 | } | |
684 | else | |
685 | in_range = 1; | |
686 | } | |
687 | } | |
688 | else if (! in_range) | |
8a3fe4f8 | 689 | error (_("negative value")); |
5c44784c JM |
690 | else |
691 | { | |
692 | /* pp points to the '-' that betokens a range. All | |
693 | number-parsing has already been done. Return the next | |
694 | integer value (one greater than the saved previous value). | |
695 | Do not advance the token pointer 'pp' until the end of range | |
696 | is reached. */ | |
697 | ||
698 | if (++last_retval == end_value) | |
699 | { | |
700 | /* End of range reached; advance token pointer. */ | |
701 | *pp = end_ptr; | |
702 | in_range = 0; | |
703 | } | |
704 | } | |
705 | return last_retval; | |
706 | } | |
707 | ||
48cb2d85 VP |
708 | /* Return the breakpoint with the specified number, or NULL |
709 | if the number does not refer to an existing breakpoint. */ | |
710 | ||
711 | struct breakpoint * | |
712 | get_breakpoint (int num) | |
713 | { | |
714 | struct breakpoint *b; | |
715 | ||
716 | ALL_BREAKPOINTS (b) | |
717 | if (b->number == num) | |
718 | return b; | |
719 | ||
720 | return NULL; | |
721 | } | |
5c44784c | 722 | |
c906108c | 723 | \f |
adc36818 PM |
724 | |
725 | void | |
726 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
727 | int from_tty) | |
728 | { | |
729 | struct bp_location *loc = b->loc; | |
730 | ||
731 | for (; loc; loc = loc->next) | |
732 | { | |
733 | xfree (loc->cond); | |
734 | loc->cond = NULL; | |
735 | } | |
736 | xfree (b->cond_string); | |
737 | b->cond_string = NULL; | |
738 | xfree (b->cond_exp); | |
739 | b->cond_exp = NULL; | |
740 | ||
741 | if (*exp == 0) | |
742 | { | |
743 | if (from_tty) | |
744 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
745 | } | |
746 | else | |
747 | { | |
748 | char *arg = exp; | |
cc59ec59 | 749 | |
adc36818 PM |
750 | /* I don't know if it matters whether this is the string the user |
751 | typed in or the decompiled expression. */ | |
752 | b->cond_string = xstrdup (arg); | |
753 | b->condition_not_parsed = 0; | |
754 | ||
755 | if (is_watchpoint (b)) | |
756 | { | |
757 | innermost_block = NULL; | |
758 | arg = exp; | |
759 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
760 | if (*arg) | |
761 | error (_("Junk at end of expression")); | |
762 | b->cond_exp_valid_block = innermost_block; | |
763 | } | |
764 | else | |
765 | { | |
766 | for (loc = b->loc; loc; loc = loc->next) | |
767 | { | |
768 | arg = exp; | |
769 | loc->cond = | |
770 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
771 | if (*arg) | |
772 | error (_("Junk at end of expression")); | |
773 | } | |
774 | } | |
775 | } | |
776 | breakpoints_changed (); | |
777 | observer_notify_breakpoint_modified (b->number); | |
778 | } | |
779 | ||
c906108c SS |
780 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
781 | ||
782 | static void | |
fba45db2 | 783 | condition_command (char *arg, int from_tty) |
c906108c | 784 | { |
52f0bd74 | 785 | struct breakpoint *b; |
c906108c | 786 | char *p; |
52f0bd74 | 787 | int bnum; |
c906108c SS |
788 | |
789 | if (arg == 0) | |
e2e0b3e5 | 790 | error_no_arg (_("breakpoint number")); |
c906108c SS |
791 | |
792 | p = arg; | |
793 | bnum = get_number (&p); | |
5c44784c | 794 | if (bnum == 0) |
8a3fe4f8 | 795 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
796 | |
797 | ALL_BREAKPOINTS (b) | |
798 | if (b->number == bnum) | |
2f069f6f | 799 | { |
2566ad2d | 800 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
801 | return; |
802 | } | |
c906108c | 803 | |
8a3fe4f8 | 804 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
805 | } |
806 | ||
a7bdde9e VP |
807 | /* Check that COMMAND do not contain commands that are suitable |
808 | only for tracepoints and not suitable for ordinary breakpoints. | |
809 | Throw if any such commands is found. | |
810 | */ | |
811 | static void | |
812 | check_no_tracepoint_commands (struct command_line *commands) | |
813 | { | |
814 | struct command_line *c; | |
cc59ec59 | 815 | |
a7bdde9e VP |
816 | for (c = commands; c; c = c->next) |
817 | { | |
818 | int i; | |
819 | ||
820 | if (c->control_type == while_stepping_control) | |
821 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
822 | ||
823 | for (i = 0; i < c->body_count; ++i) | |
824 | check_no_tracepoint_commands ((c->body_list)[i]); | |
825 | ||
826 | /* Not that command parsing removes leading whitespace and comment | |
827 | lines and also empty lines. So, we only need to check for | |
828 | command directly. */ | |
829 | if (strstr (c->line, "collect ") == c->line) | |
830 | error (_("The 'collect' command can only be used for tracepoints")); | |
831 | ||
51661e93 VP |
832 | if (strstr (c->line, "teval ") == c->line) |
833 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
834 | } |
835 | } | |
836 | ||
d77f58be SS |
837 | /* Encapsulate tests for different types of tracepoints. */ |
838 | ||
a7bdde9e | 839 | int |
d77f58be | 840 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 841 | { |
d77f58be | 842 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); |
a7bdde9e | 843 | } |
d77f58be | 844 | |
95a42b64 TT |
845 | /* A helper function that validsates that COMMANDS are valid for a |
846 | breakpoint. This function will throw an exception if a problem is | |
847 | found. */ | |
48cb2d85 | 848 | |
95a42b64 TT |
849 | static void |
850 | validate_commands_for_breakpoint (struct breakpoint *b, | |
851 | struct command_line *commands) | |
48cb2d85 | 852 | { |
d77f58be | 853 | if (is_tracepoint (b)) |
a7bdde9e VP |
854 | { |
855 | /* We need to verify that each top-level element of commands | |
856 | is valid for tracepoints, that there's at most one while-stepping | |
857 | element, and that while-stepping's body has valid tracing commands | |
858 | excluding nested while-stepping. */ | |
859 | struct command_line *c; | |
860 | struct command_line *while_stepping = 0; | |
861 | for (c = commands; c; c = c->next) | |
862 | { | |
a7bdde9e VP |
863 | if (c->control_type == while_stepping_control) |
864 | { | |
865 | if (b->type == bp_fast_tracepoint) | |
866 | error (_("The 'while-stepping' command cannot be used for fast tracepoint")); | |
867 | ||
868 | if (while_stepping) | |
869 | error (_("The 'while-stepping' command can be used only once")); | |
870 | else | |
871 | while_stepping = c; | |
872 | } | |
873 | } | |
874 | if (while_stepping) | |
875 | { | |
876 | struct command_line *c2; | |
877 | ||
878 | gdb_assert (while_stepping->body_count == 1); | |
879 | c2 = while_stepping->body_list[0]; | |
880 | for (; c2; c2 = c2->next) | |
881 | { | |
a7bdde9e VP |
882 | if (c2->control_type == while_stepping_control) |
883 | error (_("The 'while-stepping' command cannot be nested")); | |
884 | } | |
885 | } | |
886 | } | |
887 | else | |
888 | { | |
889 | check_no_tracepoint_commands (commands); | |
890 | } | |
95a42b64 TT |
891 | } |
892 | ||
893 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, | |
894 | validate that only allowed commands are included. | |
895 | */ | |
896 | ||
897 | void | |
898 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
899 | { | |
900 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 901 | |
9add0f1b TT |
902 | decref_counted_command_line (&b->commands); |
903 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
904 | breakpoints_changed (); |
905 | observer_notify_breakpoint_modified (b->number); | |
906 | } | |
907 | ||
95a42b64 TT |
908 | void |
909 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
910 | { |
911 | struct breakpoint *b = closure; | |
cc59ec59 | 912 | |
a7bdde9e VP |
913 | validate_actionline (&line, b); |
914 | } | |
915 | ||
95a42b64 TT |
916 | /* A structure used to pass information through |
917 | map_breakpoint_numbers. */ | |
918 | ||
919 | struct commands_info | |
920 | { | |
921 | /* True if the command was typed at a tty. */ | |
922 | int from_tty; | |
86b17b60 PA |
923 | |
924 | /* The breakpoint range spec. */ | |
925 | char *arg; | |
926 | ||
95a42b64 TT |
927 | /* Non-NULL if the body of the commands are being read from this |
928 | already-parsed command. */ | |
929 | struct command_line *control; | |
86b17b60 | 930 | |
95a42b64 TT |
931 | /* The command lines read from the user, or NULL if they have not |
932 | yet been read. */ | |
933 | struct counted_command_line *cmd; | |
934 | }; | |
935 | ||
936 | /* A callback for map_breakpoint_numbers that sets the commands for | |
937 | commands_command. */ | |
938 | ||
c906108c | 939 | static void |
95a42b64 | 940 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 941 | { |
95a42b64 | 942 | struct commands_info *info = data; |
c906108c | 943 | |
95a42b64 TT |
944 | if (info->cmd == NULL) |
945 | { | |
946 | struct command_line *l; | |
5c44784c | 947 | |
95a42b64 TT |
948 | if (info->control != NULL) |
949 | l = copy_command_lines (info->control->body_list[0]); | |
950 | else | |
86b17b60 PA |
951 | { |
952 | struct cleanup *old_chain; | |
953 | char *str; | |
c5aa993b | 954 | |
86b17b60 PA |
955 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
956 | info->arg); | |
957 | ||
958 | old_chain = make_cleanup (xfree, str); | |
959 | ||
960 | l = read_command_lines (str, | |
961 | info->from_tty, 1, | |
d77f58be | 962 | (is_tracepoint (b) |
86b17b60 PA |
963 | ? check_tracepoint_command : 0), |
964 | b); | |
965 | ||
966 | do_cleanups (old_chain); | |
967 | } | |
a7bdde9e | 968 | |
95a42b64 TT |
969 | info->cmd = alloc_counted_command_line (l); |
970 | } | |
971 | ||
972 | /* If a breakpoint was on the list more than once, we don't need to | |
973 | do anything. */ | |
974 | if (b->commands != info->cmd) | |
975 | { | |
976 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
977 | incref_counted_command_line (info->cmd); | |
978 | decref_counted_command_line (&b->commands); | |
979 | b->commands = info->cmd; | |
980 | breakpoints_changed (); | |
981 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 982 | } |
95a42b64 TT |
983 | } |
984 | ||
985 | static void | |
986 | commands_command_1 (char *arg, int from_tty, struct command_line *control) | |
987 | { | |
988 | struct cleanup *cleanups; | |
989 | struct commands_info info; | |
990 | ||
991 | info.from_tty = from_tty; | |
992 | info.control = control; | |
993 | info.cmd = NULL; | |
994 | /* If we read command lines from the user, then `info' will hold an | |
995 | extra reference to the commands that we must clean up. */ | |
996 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
997 | ||
998 | if (arg == NULL || !*arg) | |
999 | { | |
86b17b60 PA |
1000 | if (breakpoint_count - prev_breakpoint_count > 1) |
1001 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count); | |
95a42b64 TT |
1002 | else if (breakpoint_count > 0) |
1003 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1004 | else |
1005 | { | |
1006 | /* So that we don't try to free the incoming non-NULL | |
1007 | argument in the cleanup below. Mapping breakpoint | |
1008 | numbers will fail in this case. */ | |
1009 | arg = NULL; | |
1010 | } | |
95a42b64 | 1011 | } |
9766ced4 SS |
1012 | else |
1013 | /* The command loop has some static state, so we need to preserve | |
1014 | our argument. */ | |
1015 | arg = xstrdup (arg); | |
86b17b60 PA |
1016 | |
1017 | if (arg != NULL) | |
1018 | make_cleanup (xfree, arg); | |
1019 | ||
1020 | info.arg = arg; | |
95a42b64 TT |
1021 | |
1022 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1023 | ||
1024 | if (info.cmd == NULL) | |
1025 | error (_("No breakpoints specified.")); | |
1026 | ||
1027 | do_cleanups (cleanups); | |
1028 | } | |
1029 | ||
1030 | static void | |
1031 | commands_command (char *arg, int from_tty) | |
1032 | { | |
1033 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1034 | } |
40c03ae8 EZ |
1035 | |
1036 | /* Like commands_command, but instead of reading the commands from | |
1037 | input stream, takes them from an already parsed command structure. | |
1038 | ||
1039 | This is used by cli-script.c to DTRT with breakpoint commands | |
1040 | that are part of if and while bodies. */ | |
1041 | enum command_control_type | |
1042 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1043 | { | |
95a42b64 TT |
1044 | commands_command_1 (arg, 0, cmd); |
1045 | return simple_control; | |
40c03ae8 | 1046 | } |
876fa593 JK |
1047 | |
1048 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1049 | ||
1050 | static int | |
1051 | bp_location_has_shadow (struct bp_location *bl) | |
1052 | { | |
1053 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1054 | return 0; | |
1055 | if (!bl->inserted) | |
1056 | return 0; | |
1057 | if (bl->target_info.shadow_len == 0) | |
1058 | /* bp isn't valid, or doesn't shadow memory. */ | |
1059 | return 0; | |
1060 | return 1; | |
1061 | } | |
1062 | ||
8defab1a | 1063 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1064 | by replacing any memory breakpoints with their shadowed contents. |
1065 | ||
1066 | The range of shadowed area by each bp_location is: | |
1067 | b->address - bp_location_placed_address_before_address_max | |
1068 | up to b->address + bp_location_shadow_len_after_address_max | |
1069 | The range we were requested to resolve shadows for is: | |
1070 | memaddr ... memaddr + len | |
1071 | Thus the safe cutoff boundaries for performance optimization are | |
1072 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
1073 | and: | |
1074 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 1075 | |
8defab1a DJ |
1076 | void |
1077 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1078 | { |
876fa593 JK |
1079 | /* Left boundary, right boundary and median element of our binary search. */ |
1080 | unsigned bc_l, bc_r, bc; | |
1081 | ||
1082 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
1083 | safe to report lower value but a failure to report higher one. */ | |
1084 | ||
1085 | bc_l = 0; | |
1086 | bc_r = bp_location_count; | |
1087 | while (bc_l + 1 < bc_r) | |
1088 | { | |
1089 | struct bp_location *b; | |
1090 | ||
1091 | bc = (bc_l + bc_r) / 2; | |
1092 | b = bp_location[bc]; | |
1093 | ||
1094 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
1095 | Then advance the left boundary only if we are sure the BC element can | |
1096 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
1097 | ||
1098 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
1099 | we cannot miss a breakpoint with its shadow range tail still reaching | |
1100 | MEMADDR. */ | |
c5aa993b | 1101 | |
876fa593 JK |
1102 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
1103 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
1104 | bc_l = bc; | |
1105 | else | |
1106 | bc_r = bc; | |
1107 | } | |
1108 | ||
1109 | /* Now do full processing of the found relevant range of elements. */ | |
1110 | ||
1111 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1112 | { |
876fa593 JK |
1113 | struct bp_location *b = bp_location[bc]; |
1114 | CORE_ADDR bp_addr = 0; | |
1115 | int bp_size = 0; | |
1116 | int bptoffset = 0; | |
1117 | ||
2bdf28a0 | 1118 | /* bp_location array has B->OWNER always non-NULL. */ |
ffce0d52 | 1119 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1120 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
1121 | b->owner->number); |
1122 | ||
876fa593 JK |
1123 | /* Performance optimization: any futher element can no longer affect BUF |
1124 | content. */ | |
1125 | ||
1126 | if (b->address >= bp_location_placed_address_before_address_max | |
1127 | && memaddr + len <= b->address | |
1128 | - bp_location_placed_address_before_address_max) | |
1129 | break; | |
1130 | ||
1131 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 1132 | continue; |
6c95b8df PA |
1133 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
1134 | current_program_space->aspace, 0)) | |
1135 | continue; | |
1136 | ||
c5aa993b JM |
1137 | /* Addresses and length of the part of the breakpoint that |
1138 | we need to copy. */ | |
8181d85f DJ |
1139 | bp_addr = b->target_info.placed_address; |
1140 | bp_size = b->target_info.shadow_len; | |
8defab1a | 1141 | |
c5aa993b JM |
1142 | if (bp_addr + bp_size <= memaddr) |
1143 | /* The breakpoint is entirely before the chunk of memory we | |
1144 | are reading. */ | |
1145 | continue; | |
8defab1a | 1146 | |
c5aa993b JM |
1147 | if (bp_addr >= memaddr + len) |
1148 | /* The breakpoint is entirely after the chunk of memory we are | |
1149 | reading. */ | |
1150 | continue; | |
c5aa993b | 1151 | |
8defab1a DJ |
1152 | /* Offset within shadow_contents. */ |
1153 | if (bp_addr < memaddr) | |
1154 | { | |
1155 | /* Only copy the second part of the breakpoint. */ | |
1156 | bp_size -= memaddr - bp_addr; | |
1157 | bptoffset = memaddr - bp_addr; | |
1158 | bp_addr = memaddr; | |
1159 | } | |
c5aa993b | 1160 | |
8defab1a DJ |
1161 | if (bp_addr + bp_size > memaddr + len) |
1162 | { | |
1163 | /* Only copy the first part of the breakpoint. */ | |
1164 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1165 | } | |
c5aa993b | 1166 | |
8defab1a DJ |
1167 | memcpy (buf + bp_addr - memaddr, |
1168 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 1169 | } |
c906108c | 1170 | } |
c906108c | 1171 | \f |
c5aa993b | 1172 | |
687595f9 | 1173 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1174 | static void |
687595f9 DJ |
1175 | insert_catchpoint (struct ui_out *uo, void *args) |
1176 | { | |
1177 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1178 | |
fe798b75 JB |
1179 | gdb_assert (b->type == bp_catchpoint); |
1180 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1181 | ||
1182 | b->ops->insert (b); | |
687595f9 DJ |
1183 | } |
1184 | ||
60e1c644 PA |
1185 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1186 | ||
a5606eee | 1187 | static int |
d77f58be | 1188 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1189 | { |
1190 | return (bpt->type == bp_hardware_watchpoint | |
1191 | || bpt->type == bp_read_watchpoint | |
1192 | || bpt->type == bp_access_watchpoint); | |
1193 | } | |
7270d8f2 | 1194 | |
60e1c644 PA |
1195 | /* Return true if BPT is of any watchpoint kind, hardware or |
1196 | software. */ | |
1197 | ||
1198 | static int | |
d77f58be | 1199 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1200 | { |
1201 | return (is_hardware_watchpoint (bpt) | |
1202 | || bpt->type == bp_watchpoint); | |
1203 | } | |
1204 | ||
fa4727a6 DJ |
1205 | /* Find the current value of a watchpoint on EXP. Return the value in |
1206 | *VALP and *RESULTP and the chain of intermediate and final values | |
1207 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
1208 | not need them. | |
1209 | ||
ccc57cf9 | 1210 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
1211 | be set to NULL. *RESULTP may be a lazy value, if the result could |
1212 | not be read from memory. It is used to determine whether a value | |
1213 | is user-specified (we should watch the whole value) or intermediate | |
1214 | (we should watch only the bit used to locate the final value). | |
1215 | ||
1216 | If the final value, or any intermediate value, could not be read | |
1217 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
1218 | set to any referenced values. *VALP will never be a lazy value. | |
1219 | This is the value which we store in struct breakpoint. | |
1220 | ||
1221 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
1222 | value chain. The caller must free the values individually. If | |
1223 | VAL_CHAIN is NULL, all generated values will be left on the value | |
1224 | chain. */ | |
1225 | ||
1226 | static void | |
1227 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
1228 | struct value **resultp, struct value **val_chain) | |
1229 | { | |
1230 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 1231 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
1232 | |
1233 | *valp = NULL; | |
1234 | if (resultp) | |
1235 | *resultp = NULL; | |
1236 | if (val_chain) | |
1237 | *val_chain = NULL; | |
1238 | ||
1239 | /* Evaluate the expression. */ | |
1240 | mark = value_mark (); | |
1241 | result = NULL; | |
ccc57cf9 PA |
1242 | |
1243 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1244 | { | |
1245 | result = evaluate_expression (exp); | |
1246 | } | |
1247 | if (ex.reason < 0) | |
1248 | { | |
1249 | /* Ignore memory errors, we want watchpoints pointing at | |
1250 | inaccessible memory to still be created; otherwise, throw the | |
1251 | error to some higher catcher. */ | |
1252 | switch (ex.error) | |
1253 | { | |
1254 | case MEMORY_ERROR: | |
1255 | break; | |
1256 | default: | |
1257 | throw_exception (ex); | |
1258 | break; | |
1259 | } | |
1260 | } | |
1261 | ||
fa4727a6 DJ |
1262 | new_mark = value_mark (); |
1263 | if (mark == new_mark) | |
1264 | return; | |
1265 | if (resultp) | |
1266 | *resultp = result; | |
1267 | ||
1268 | /* Make sure it's not lazy, so that after the target stops again we | |
1269 | have a non-lazy previous value to compare with. */ | |
1270 | if (result != NULL | |
1271 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
1272 | *valp = result; | |
1273 | ||
1274 | if (val_chain) | |
1275 | { | |
1276 | /* Return the chain of intermediate values. We use this to | |
1277 | decide which addresses to watch. */ | |
1278 | *val_chain = new_mark; | |
1279 | value_release_to_mark (mark); | |
1280 | } | |
1281 | } | |
1282 | ||
f6bc2008 PA |
1283 | /* Assuming that B is a watchpoint: returns true if the current thread |
1284 | and its running state are safe to evaluate or update watchpoint B. | |
1285 | Watchpoints on local expressions need to be evaluated in the | |
1286 | context of the thread that was current when the watchpoint was | |
1287 | created, and, that thread needs to be stopped to be able to select | |
1288 | the correct frame context. Watchpoints on global expressions can | |
1289 | be evaluated on any thread, and in any state. It is presently left | |
1290 | to the target allowing memory accesses when threads are | |
1291 | running. */ | |
1292 | ||
1293 | static int | |
1294 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1295 | { | |
1296 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1297 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1298 | && !is_executing (inferior_ptid))); | |
1299 | } | |
1300 | ||
567e1b4e JB |
1301 | /* Assuming that B is a watchpoint: |
1302 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1303 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1304 | - Evaluate the condition if there is one, and store the result |
1305 | in b->loc->cond. | |
a5606eee VP |
1306 | - Update the list of values that must be watched in B->loc. |
1307 | ||
bfa149ac | 1308 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1309 | If this is local watchpoint that is out of scope, delete it. |
1310 | ||
1311 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1312 | + inserted on each stop here. Normal breakpoints must never be removed | |
1313 | because they might be missed by a running thread when debugging in non-stop | |
1314 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1315 | processed here) are specific to each LWP since they are stored in each LWP's | |
1316 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1317 | order to be able to modify its hardware watchpoints. | |
1318 | ||
1319 | Hardware watchpoints must be reset exactly once after being presented to the | |
1320 | user. It cannot be done sooner, because it would reset the data used to | |
1321 | present the watchpoint hit to the user. And it must not be done later | |
1322 | because it could display the same single watchpoint hit during multiple GDB | |
1323 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1324 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1325 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1326 | memory content has not changed. | |
1327 | ||
1328 | The following constraints influence the location where we can reset hardware | |
1329 | watchpoints: | |
1330 | ||
1331 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1332 | several times when GDB stops. | |
1333 | ||
1334 | [linux] | |
1335 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1336 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1337 | reason for stopping, and all the other hits are presented later, one after | |
1338 | the other, each time the user requests the execution to be resumed. | |
1339 | Execution is not resumed for the threads still having pending hit event | |
1340 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1341 | the inferior on the first stop the thread hit event is kept being reported | |
1342 | from its cached value by linux_nat_stopped_data_address until the real | |
1343 | thread resume happens after the watchpoint gets presented and thus its | |
1344 | LWP_INFO->STATUS gets reset. | |
1345 | ||
1346 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1347 | removal from inferior. */ | |
1348 | ||
b40ce68a | 1349 | static void |
a5606eee | 1350 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1351 | { |
a5606eee | 1352 | int within_current_scope; |
a5606eee | 1353 | struct frame_id saved_frame_id; |
66076460 | 1354 | int frame_saved; |
a5606eee | 1355 | |
f6bc2008 PA |
1356 | /* If this is a local watchpoint, we only want to check if the |
1357 | watchpoint frame is in scope if the current thread is the thread | |
1358 | that was used to create the watchpoint. */ | |
1359 | if (!watchpoint_in_thread_scope (b)) | |
1360 | return; | |
1361 | ||
876fa593 | 1362 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1363 | update_global_locations will eventually delete them and remove |
1364 | breakpoints if needed. */ | |
a5606eee VP |
1365 | b->loc = NULL; |
1366 | ||
1367 | if (b->disposition == disp_del_at_next_stop) | |
1368 | return; | |
1369 | ||
66076460 | 1370 | frame_saved = 0; |
a5606eee VP |
1371 | |
1372 | /* Determine if the watchpoint is within scope. */ | |
1373 | if (b->exp_valid_block == NULL) | |
1374 | within_current_scope = 1; | |
1375 | else | |
1376 | { | |
1377 | struct frame_info *fi; | |
66076460 DJ |
1378 | |
1379 | /* Save the current frame's ID so we can restore it after | |
1380 | evaluating the watchpoint expression on its own frame. */ | |
1381 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1382 | took a frame parameter, so that we didn't have to change the | |
1383 | selected frame. */ | |
1384 | frame_saved = 1; | |
1385 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1386 | ||
a5606eee VP |
1387 | fi = frame_find_by_id (b->watchpoint_frame); |
1388 | within_current_scope = (fi != NULL); | |
1389 | if (within_current_scope) | |
1390 | select_frame (fi); | |
1391 | } | |
1392 | ||
1393 | if (within_current_scope && reparse) | |
1394 | { | |
1395 | char *s; | |
1396 | if (b->exp) | |
1397 | { | |
1398 | xfree (b->exp); | |
1399 | b->exp = NULL; | |
1400 | } | |
1401 | s = b->exp_string; | |
1402 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1403 | /* If the meaning of expression itself changed, the old value is | |
1404 | no longer relevant. We don't want to report a watchpoint hit | |
1405 | to the user when the old value and the new value may actually | |
1406 | be completely different objects. */ | |
1407 | value_free (b->val); | |
fa4727a6 DJ |
1408 | b->val = NULL; |
1409 | b->val_valid = 0; | |
60e1c644 PA |
1410 | |
1411 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1412 | expression is stored in the breakpoint object, not in the | |
1413 | locations (re)created below. */ | |
1414 | if (b->cond_string != NULL) | |
1415 | { | |
1416 | if (b->cond_exp != NULL) | |
1417 | { | |
1418 | xfree (b->cond_exp); | |
1419 | b->cond_exp = NULL; | |
1420 | } | |
1421 | ||
1422 | s = b->cond_string; | |
1423 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1424 | } | |
a5606eee | 1425 | } |
a5606eee VP |
1426 | |
1427 | /* If we failed to parse the expression, for example because | |
1428 | it refers to a global variable in a not-yet-loaded shared library, | |
1429 | don't try to insert watchpoint. We don't automatically delete | |
1430 | such watchpoint, though, since failure to parse expression | |
1431 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1432 | if ( !target_has_execution) |
1433 | { | |
1434 | /* Without execution, memory can't change. No use to try and | |
1435 | set watchpoint locations. The watchpoint will be reset when | |
1436 | the target gains execution, through breakpoint_re_set. */ | |
1437 | } | |
1438 | else if (within_current_scope && b->exp) | |
a5606eee | 1439 | { |
fa4727a6 | 1440 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1441 | struct program_space *frame_pspace; |
a5606eee | 1442 | |
fa4727a6 | 1443 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1444 | |
a5606eee VP |
1445 | /* Avoid setting b->val if it's already set. The meaning of |
1446 | b->val is 'the last value' user saw, and we should update | |
1447 | it only if we reported that last value to user. As it | |
1448 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1449 | if (!b->val_valid) |
1450 | { | |
1451 | b->val = v; | |
1452 | b->val_valid = 1; | |
1453 | } | |
a5606eee | 1454 | |
db2ad4c3 JK |
1455 | /* Change the type of breakpoint between hardware assisted or an |
1456 | ordinary watchpoint depending on the hardware support and free | |
1457 | hardware slots. REPARSE is set when the inferior is started. */ | |
1458 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1459 | && reparse) | |
1460 | { | |
ca2d49e8 | 1461 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1462 | |
7b838ca2 TJB |
1463 | /* We need to determine how many resources are already used |
1464 | for all other hardware watchpoints to see if we still have | |
1465 | enough resources to also fit this watchpoint in as well. | |
1466 | To avoid the hw_watchpoint_used_count call below from counting | |
1467 | this watchpoint, make sure that it is marked as a software | |
1468 | watchpoint. */ | |
1469 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1470 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1471 | &other_type_used); | |
1472 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1473 | ||
ca2d49e8 | 1474 | if (!mem_cnt) |
db2ad4c3 JK |
1475 | b->type = bp_watchpoint; |
1476 | else | |
ca2d49e8 | 1477 | { |
d92524f1 | 1478 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1479 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1480 | if (target_resources_ok <= 0) | |
1481 | b->type = bp_watchpoint; | |
1482 | else | |
1483 | b->type = bp_hardware_watchpoint; | |
1484 | } | |
db2ad4c3 JK |
1485 | } |
1486 | ||
2d134ed3 PA |
1487 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1488 | ||
a5606eee | 1489 | /* Look at each value on the value chain. */ |
fa4727a6 | 1490 | for (v = val_chain; v; v = next) |
a5606eee VP |
1491 | { |
1492 | /* If it's a memory location, and GDB actually needed | |
1493 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1494 | must watch it. If the first value returned is |
1495 | still lazy, that means an error occurred reading it; | |
1496 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1497 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1498 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1499 | { |
1500 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1501 | |
a5606eee VP |
1502 | /* We only watch structs and arrays if user asked |
1503 | for it explicitly, never if they just happen to | |
1504 | appear in the middle of some value chain. */ | |
fa4727a6 | 1505 | if (v == result |
a5606eee VP |
1506 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1507 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1508 | { | |
1509 | CORE_ADDR addr; | |
1510 | int len, type; | |
1511 | struct bp_location *loc, **tmp; | |
1512 | ||
42ae5230 | 1513 | addr = value_address (v); |
a5606eee VP |
1514 | len = TYPE_LENGTH (value_type (v)); |
1515 | type = hw_write; | |
1516 | if (b->type == bp_read_watchpoint) | |
1517 | type = hw_read; | |
1518 | else if (b->type == bp_access_watchpoint) | |
1519 | type = hw_access; | |
1520 | ||
39d61571 | 1521 | loc = allocate_bp_location (b); |
a5606eee VP |
1522 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1523 | ; | |
1524 | *tmp = loc; | |
a6d9a66e | 1525 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1526 | |
1527 | loc->pspace = frame_pspace; | |
a5606eee VP |
1528 | loc->address = addr; |
1529 | loc->length = len; | |
1530 | loc->watchpoint_type = type; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | next = value_next (v); | |
1535 | if (v != b->val) | |
1536 | value_free (v); | |
1537 | } | |
1538 | ||
c7437ca6 PA |
1539 | /* If a software watchpoint is not watching any memory, then the |
1540 | above left it without any location set up. But, | |
1541 | bpstat_stop_status requires a location to be able to report | |
1542 | stops, so make sure there's at least a dummy one. */ | |
1543 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1544 | { | |
1545 | b->loc = allocate_bp_location (b); | |
1546 | b->loc->pspace = frame_pspace; | |
1547 | b->loc->address = -1; | |
1548 | b->loc->length = -1; | |
1549 | b->loc->watchpoint_type = -1; | |
1550 | } | |
a5606eee VP |
1551 | } |
1552 | else if (!within_current_scope) | |
7270d8f2 | 1553 | { |
a5606eee | 1554 | printf_filtered (_("\ |
567e1b4e | 1555 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1556 | in which its expression is valid.\n"), |
1557 | b->number); | |
1558 | if (b->related_breakpoint) | |
60e1c644 PA |
1559 | { |
1560 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1561 | b->related_breakpoint->related_breakpoint = NULL; | |
1562 | b->related_breakpoint= NULL; | |
1563 | } | |
a5606eee | 1564 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1565 | } |
a5606eee VP |
1566 | |
1567 | /* Restore the selected frame. */ | |
66076460 DJ |
1568 | if (frame_saved) |
1569 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1570 | } |
1571 | ||
a5606eee | 1572 | |
74960c60 VP |
1573 | /* Returns 1 iff breakpoint location should be |
1574 | inserted in the inferior. */ | |
1575 | static int | |
1576 | should_be_inserted (struct bp_location *bpt) | |
1577 | { | |
2bdf28a0 | 1578 | if (bpt->owner == NULL || !breakpoint_enabled (bpt->owner)) |
74960c60 VP |
1579 | return 0; |
1580 | ||
1581 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1582 | return 0; | |
1583 | ||
1584 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1585 | return 0; | |
1586 | ||
56710373 PA |
1587 | /* This is set for example, when we're attached to the parent of a |
1588 | vfork, and have detached from the child. The child is running | |
1589 | free, and we expect it to do an exec or exit, at which point the | |
1590 | OS makes the parent schedulable again (and the target reports | |
1591 | that the vfork is done). Until the child is done with the shared | |
1592 | memory region, do not insert breakpoints in the parent, otherwise | |
1593 | the child could still trip on the parent's breakpoints. Since | |
1594 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1595 | if (bpt->pspace->breakpoints_not_allowed) | |
1596 | return 0; | |
1597 | ||
1042e4c0 SS |
1598 | /* Tracepoints are inserted by the target at a time of its choosing, |
1599 | not by us. */ | |
d77f58be | 1600 | if (is_tracepoint (bpt->owner)) |
1042e4c0 SS |
1601 | return 0; |
1602 | ||
74960c60 VP |
1603 | return 1; |
1604 | } | |
1605 | ||
879bfdc2 DJ |
1606 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1607 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1608 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1609 | |
1610 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1611 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1612 | static int |
879bfdc2 | 1613 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1614 | struct ui_file *tmp_error_stream, |
fa3a767f | 1615 | int *disabled_breaks, |
26bb91f3 | 1616 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1617 | { |
1618 | int val = 0; | |
1619 | ||
74960c60 | 1620 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1621 | return 0; |
1622 | ||
8181d85f DJ |
1623 | /* Initialize the target-specific information. */ |
1624 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1625 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1626 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1627 | |
879bfdc2 DJ |
1628 | if (bpt->loc_type == bp_loc_software_breakpoint |
1629 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1630 | { | |
765dc015 VP |
1631 | if (bpt->owner->type != bp_hardware_breakpoint) |
1632 | { | |
1633 | /* If the explicitly specified breakpoint type | |
1634 | is not hardware breakpoint, check the memory map to see | |
1635 | if the breakpoint address is in read only memory or not. | |
1636 | Two important cases are: | |
1637 | - location type is not hardware breakpoint, memory | |
1638 | is readonly. We change the type of the location to | |
1639 | hardware breakpoint. | |
1640 | - location type is hardware breakpoint, memory is read-write. | |
1641 | This means we've previously made the location hardware one, but | |
1642 | then the memory map changed, so we undo. | |
1643 | ||
1644 | When breakpoints are removed, remove_breakpoints will | |
1645 | use location types we've just set here, the only possible | |
1646 | problem is that memory map has changed during running program, | |
1647 | but it's not going to work anyway with current gdb. */ | |
1648 | struct mem_region *mr | |
1649 | = lookup_mem_region (bpt->target_info.placed_address); | |
1650 | ||
1651 | if (mr) | |
1652 | { | |
1653 | if (automatic_hardware_breakpoints) | |
1654 | { | |
765dc015 VP |
1655 | enum bp_loc_type new_type; |
1656 | ||
1657 | if (mr->attrib.mode != MEM_RW) | |
1658 | new_type = bp_loc_hardware_breakpoint; | |
1659 | else | |
1660 | new_type = bp_loc_software_breakpoint; | |
1661 | ||
1662 | if (new_type != bpt->loc_type) | |
1663 | { | |
1664 | static int said = 0; | |
cc59ec59 | 1665 | |
765dc015 VP |
1666 | bpt->loc_type = new_type; |
1667 | if (!said) | |
1668 | { | |
1669 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1670 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1671 | said = 1; |
1672 | } | |
1673 | } | |
1674 | } | |
1675 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1676 | && mr->attrib.mode != MEM_RW) | |
1677 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1678 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1679 | } |
1680 | } | |
1681 | ||
879bfdc2 DJ |
1682 | /* First check to see if we have to handle an overlay. */ |
1683 | if (overlay_debugging == ovly_off | |
1684 | || bpt->section == NULL | |
1685 | || !(section_is_overlay (bpt->section))) | |
1686 | { | |
1687 | /* No overlay handling: just set the breakpoint. */ | |
1688 | ||
1689 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1690 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1691 | &bpt->target_info); | |
879bfdc2 | 1692 | else |
a6d9a66e UW |
1693 | val = target_insert_breakpoint (bpt->gdbarch, |
1694 | &bpt->target_info); | |
879bfdc2 DJ |
1695 | } |
1696 | else | |
1697 | { | |
1698 | /* This breakpoint is in an overlay section. | |
1699 | Shall we set a breakpoint at the LMA? */ | |
1700 | if (!overlay_events_enabled) | |
1701 | { | |
1702 | /* Yes -- overlay event support is not active, | |
1703 | so we must try to set a breakpoint at the LMA. | |
1704 | This will not work for a hardware breakpoint. */ | |
1705 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1706 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1707 | bpt->owner->number); |
1708 | else | |
1709 | { | |
1710 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1711 | bpt->section); | |
1712 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1713 | bpt->overlay_target_info = bpt->target_info; |
1714 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1715 | val = target_insert_breakpoint (bpt->gdbarch, |
1716 | &bpt->overlay_target_info); | |
879bfdc2 | 1717 | if (val != 0) |
99361f52 DE |
1718 | fprintf_unfiltered (tmp_error_stream, |
1719 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1720 | bpt->owner->number); |
1721 | } | |
1722 | } | |
1723 | /* Shall we set a breakpoint at the VMA? */ | |
1724 | if (section_is_mapped (bpt->section)) | |
1725 | { | |
1726 | /* Yes. This overlay section is mapped into memory. */ | |
1727 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1728 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1729 | &bpt->target_info); | |
879bfdc2 | 1730 | else |
a6d9a66e UW |
1731 | val = target_insert_breakpoint (bpt->gdbarch, |
1732 | &bpt->target_info); | |
879bfdc2 DJ |
1733 | } |
1734 | else | |
1735 | { | |
1736 | /* No. This breakpoint will not be inserted. | |
1737 | No error, but do not mark the bp as 'inserted'. */ | |
1738 | return 0; | |
1739 | } | |
1740 | } | |
1741 | ||
1742 | if (val) | |
1743 | { | |
1744 | /* Can't set the breakpoint. */ | |
6c95b8df | 1745 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1746 | { |
1747 | /* See also: disable_breakpoints_in_shlibs. */ | |
1748 | val = 0; | |
0d381245 | 1749 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1750 | if (!*disabled_breaks) |
1751 | { | |
1752 | fprintf_unfiltered (tmp_error_stream, | |
1753 | "Cannot insert breakpoint %d.\n", | |
1754 | bpt->owner->number); | |
1755 | fprintf_unfiltered (tmp_error_stream, | |
1756 | "Temporarily disabling shared library breakpoints:\n"); | |
1757 | } | |
1758 | *disabled_breaks = 1; | |
1759 | fprintf_unfiltered (tmp_error_stream, | |
1760 | "breakpoint #%d\n", bpt->owner->number); | |
1761 | } | |
1762 | else | |
879bfdc2 | 1763 | { |
879bfdc2 DJ |
1764 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1765 | { | |
1766 | *hw_breakpoint_error = 1; | |
1767 | fprintf_unfiltered (tmp_error_stream, | |
1768 | "Cannot insert hardware breakpoint %d.\n", | |
1769 | bpt->owner->number); | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | fprintf_unfiltered (tmp_error_stream, | |
1774 | "Cannot insert breakpoint %d.\n", | |
1775 | bpt->owner->number); | |
1776 | fprintf_filtered (tmp_error_stream, | |
1777 | "Error accessing memory address "); | |
5af949e3 UW |
1778 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1779 | tmp_error_stream); | |
879bfdc2 DJ |
1780 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1781 | safe_strerror (val)); | |
1782 | } | |
1783 | ||
1784 | } | |
1785 | } | |
1786 | else | |
1787 | bpt->inserted = 1; | |
1788 | ||
1789 | return val; | |
1790 | } | |
1791 | ||
1792 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1793 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1794 | watchpoints. It's not clear that it's necessary... */ | |
1795 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1796 | { | |
85d721b8 | 1797 | val = target_insert_watchpoint (bpt->address, |
a5606eee VP |
1798 | bpt->length, |
1799 | bpt->watchpoint_type); | |
85d721b8 PA |
1800 | |
1801 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1802 | supported, try emulating one with an access watchpoint. */ | |
1803 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1804 | { | |
1805 | struct bp_location *loc, **loc_temp; | |
1806 | ||
1807 | /* But don't try to insert it, if there's already another | |
1808 | hw_access location that would be considered a duplicate | |
1809 | of this one. */ | |
1810 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1811 | if (loc != bpt | |
1812 | && loc->watchpoint_type == hw_access | |
1813 | && watchpoint_locations_match (bpt, loc)) | |
1814 | { | |
1815 | bpt->duplicate = 1; | |
1816 | bpt->inserted = 1; | |
1817 | bpt->target_info = loc->target_info; | |
1818 | bpt->watchpoint_type = hw_access; | |
1819 | val = 0; | |
1820 | break; | |
1821 | } | |
1822 | ||
1823 | if (val == 1) | |
1824 | { | |
1825 | val = target_insert_watchpoint (bpt->address, | |
1826 | bpt->length, | |
1827 | hw_access); | |
1828 | if (val == 0) | |
1829 | bpt->watchpoint_type = hw_access; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1834 | } |
1835 | ||
fe798b75 | 1836 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1837 | { |
71fff37b AC |
1838 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1839 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1840 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1841 | bpt->owner->number); | |
1842 | if (e.reason < 0) | |
879bfdc2 DJ |
1843 | bpt->owner->enable_state = bp_disabled; |
1844 | else | |
1845 | bpt->inserted = 1; | |
1640b821 DJ |
1846 | |
1847 | /* We've already printed an error message if there was a problem | |
1848 | inserting this catchpoint, and we've disabled the catchpoint, | |
1849 | so just return success. */ | |
1850 | return 0; | |
879bfdc2 DJ |
1851 | } |
1852 | ||
1853 | return 0; | |
1854 | } | |
1855 | ||
6c95b8df PA |
1856 | /* This function is called when program space PSPACE is about to be |
1857 | deleted. It takes care of updating breakpoints to not reference | |
1858 | PSPACE anymore. */ | |
1859 | ||
1860 | void | |
1861 | breakpoint_program_space_exit (struct program_space *pspace) | |
1862 | { | |
1863 | struct breakpoint *b, *b_temp; | |
876fa593 | 1864 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1865 | |
1866 | /* Remove any breakpoint that was set through this program space. */ | |
1867 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1868 | { | |
1869 | if (b->pspace == pspace) | |
1870 | delete_breakpoint (b); | |
1871 | } | |
1872 | ||
1873 | /* Breakpoints set through other program spaces could have locations | |
1874 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1875 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1876 | { |
1877 | struct bp_location *tmp; | |
1878 | ||
1879 | if (loc->pspace == pspace) | |
1880 | { | |
2bdf28a0 | 1881 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1882 | if (loc->owner->loc == loc) |
1883 | loc->owner->loc = loc->next; | |
1884 | else | |
1885 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1886 | if (tmp->next == loc) | |
1887 | { | |
1888 | tmp->next = loc->next; | |
1889 | break; | |
1890 | } | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | /* Now update the global location list to permanently delete the | |
1895 | removed locations above. */ | |
1896 | update_global_location_list (0); | |
1897 | } | |
1898 | ||
74960c60 VP |
1899 | /* Make sure all breakpoints are inserted in inferior. |
1900 | Throws exception on any error. | |
1901 | A breakpoint that is already inserted won't be inserted | |
1902 | again, so calling this function twice is safe. */ | |
1903 | void | |
1904 | insert_breakpoints (void) | |
1905 | { | |
1906 | struct breakpoint *bpt; | |
1907 | ||
1908 | ALL_BREAKPOINTS (bpt) | |
1909 | if (is_hardware_watchpoint (bpt)) | |
1910 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1911 | ||
b60e7edf | 1912 | update_global_location_list (1); |
74960c60 | 1913 | |
c35b1492 PA |
1914 | /* update_global_location_list does not insert breakpoints when |
1915 | always_inserted_mode is not enabled. Explicitly insert them | |
1916 | now. */ | |
1917 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1918 | insert_breakpoint_locations (); |
1919 | } | |
1920 | ||
c906108c SS |
1921 | /* insert_breakpoints is used when starting or continuing the program. |
1922 | remove_breakpoints is used when the program stops. | |
1923 | Both return zero if successful, | |
1924 | or an `errno' value if could not write the inferior. */ | |
1925 | ||
74960c60 VP |
1926 | static void |
1927 | insert_breakpoint_locations (void) | |
c906108c | 1928 | { |
a5606eee | 1929 | struct breakpoint *bpt; |
876fa593 | 1930 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1931 | int error = 0; |
c906108c SS |
1932 | int val = 0; |
1933 | int disabled_breaks = 0; | |
81d0cc19 | 1934 | int hw_breakpoint_error = 0; |
c906108c | 1935 | |
81d0cc19 | 1936 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1937 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1938 | |
81d0cc19 GS |
1939 | /* Explicitly mark the warning -- this will only be printed if |
1940 | there was an error. */ | |
1941 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1942 | |
1943 | save_current_space_and_thread (); | |
1944 | ||
876fa593 | 1945 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1946 | { |
74960c60 | 1947 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1948 | continue; |
1949 | ||
f365de73 | 1950 | /* There is no point inserting thread-specific breakpoints if the |
2bdf28a0 JK |
1951 | thread no longer exists. ALL_BP_LOCATIONS bp_location has B->OWNER |
1952 | always non-NULL. */ | |
f365de73 AS |
1953 | if (b->owner->thread != -1 |
1954 | && !valid_thread_id (b->owner->thread)) | |
1955 | continue; | |
1956 | ||
6c95b8df PA |
1957 | switch_to_program_space_and_thread (b->pspace); |
1958 | ||
1959 | /* For targets that support global breakpoints, there's no need | |
1960 | to select an inferior to insert breakpoint to. In fact, even | |
1961 | if we aren't attached to any process yet, we should still | |
1962 | insert breakpoints. */ | |
1963 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1964 | && ptid_equal (inferior_ptid, null_ptid)) | |
1965 | continue; | |
1966 | ||
879bfdc2 | 1967 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1968 | &disabled_breaks, |
879bfdc2 DJ |
1969 | &hw_breakpoint_error); |
1970 | if (val) | |
e236ba44 | 1971 | error = val; |
879bfdc2 | 1972 | } |
c906108c | 1973 | |
a5606eee VP |
1974 | /* If we failed to insert all locations of a watchpoint, |
1975 | remove them, as half-inserted watchpoint is of limited use. */ | |
1976 | ALL_BREAKPOINTS (bpt) | |
1977 | { | |
1978 | int some_failed = 0; | |
1979 | struct bp_location *loc; | |
1980 | ||
1981 | if (!is_hardware_watchpoint (bpt)) | |
1982 | continue; | |
1983 | ||
d6b74ac4 | 1984 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1985 | continue; |
74960c60 VP |
1986 | |
1987 | if (bpt->disposition == disp_del_at_next_stop) | |
1988 | continue; | |
a5606eee VP |
1989 | |
1990 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1991 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1992 | { |
1993 | some_failed = 1; | |
1994 | break; | |
1995 | } | |
1996 | if (some_failed) | |
1997 | { | |
1998 | for (loc = bpt->loc; loc; loc = loc->next) | |
1999 | if (loc->inserted) | |
2000 | remove_breakpoint (loc, mark_uninserted); | |
2001 | ||
2002 | hw_breakpoint_error = 1; | |
2003 | fprintf_unfiltered (tmp_error_stream, | |
2004 | "Could not insert hardware watchpoint %d.\n", | |
2005 | bpt->number); | |
2006 | error = -1; | |
2007 | } | |
2008 | } | |
2009 | ||
e236ba44 | 2010 | if (error) |
81d0cc19 GS |
2011 | { |
2012 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2013 | message about possibly exhausted resources. */ | |
879bfdc2 | 2014 | if (hw_breakpoint_error) |
81d0cc19 | 2015 | { |
c6510018 MS |
2016 | fprintf_unfiltered (tmp_error_stream, |
2017 | "Could not insert hardware breakpoints:\n\ | |
2018 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2019 | } |
81d0cc19 GS |
2020 | target_terminal_ours_for_output (); |
2021 | error_stream (tmp_error_stream); | |
2022 | } | |
f7545552 TT |
2023 | |
2024 | do_cleanups (cleanups); | |
c906108c SS |
2025 | } |
2026 | ||
c906108c | 2027 | int |
fba45db2 | 2028 | remove_breakpoints (void) |
c906108c | 2029 | { |
876fa593 | 2030 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2031 | int val = 0; |
c906108c | 2032 | |
876fa593 | 2033 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2034 | { |
0bde7532 | 2035 | if (b->inserted) |
3a1bae8e | 2036 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 2037 | } |
3a1bae8e | 2038 | return val; |
c906108c SS |
2039 | } |
2040 | ||
6c95b8df PA |
2041 | /* Remove breakpoints of process PID. */ |
2042 | ||
2043 | int | |
2044 | remove_breakpoints_pid (int pid) | |
2045 | { | |
876fa593 | 2046 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
2047 | int val; |
2048 | struct inferior *inf = find_inferior_pid (pid); | |
2049 | ||
876fa593 | 2050 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
2051 | { |
2052 | if (b->pspace != inf->pspace) | |
2053 | continue; | |
2054 | ||
2055 | if (b->inserted) | |
2056 | { | |
2057 | val = remove_breakpoint (b, mark_uninserted); | |
2058 | if (val != 0) | |
2059 | return val; | |
2060 | } | |
2061 | } | |
2062 | return 0; | |
2063 | } | |
2064 | ||
692590c1 | 2065 | int |
80ce1ecb | 2066 | remove_hw_watchpoints (void) |
692590c1 | 2067 | { |
876fa593 | 2068 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2069 | int val = 0; |
692590c1 | 2070 | |
876fa593 | 2071 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 2072 | { |
0bde7532 | 2073 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 2074 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 2075 | } |
3a1bae8e | 2076 | return val; |
692590c1 MS |
2077 | } |
2078 | ||
c906108c | 2079 | int |
fba45db2 | 2080 | reattach_breakpoints (int pid) |
c906108c | 2081 | { |
6c95b8df | 2082 | struct cleanup *old_chain; |
876fa593 | 2083 | struct bp_location *b, **bp_tmp; |
c906108c | 2084 | int val; |
a4954f26 | 2085 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2086 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2087 | struct inferior *inf; |
2088 | struct thread_info *tp; | |
2089 | ||
2090 | tp = any_live_thread_of_process (pid); | |
2091 | if (tp == NULL) | |
2092 | return 1; | |
2093 | ||
2094 | inf = find_inferior_pid (pid); | |
2095 | old_chain = save_inferior_ptid (); | |
2096 | ||
2097 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2098 | |
2099 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2100 | |
876fa593 | 2101 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2102 | { |
6c95b8df PA |
2103 | if (b->pspace != inf->pspace) |
2104 | continue; | |
2105 | ||
0bde7532 | 2106 | if (b->inserted) |
c5aa993b | 2107 | { |
a4954f26 DJ |
2108 | b->inserted = 0; |
2109 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 2110 | &dummy1, &dummy2); |
c5aa993b JM |
2111 | if (val != 0) |
2112 | { | |
ce696e05 | 2113 | do_cleanups (old_chain); |
c5aa993b JM |
2114 | return val; |
2115 | } | |
2116 | } | |
2117 | } | |
ce696e05 | 2118 | do_cleanups (old_chain); |
c906108c SS |
2119 | return 0; |
2120 | } | |
2121 | ||
e58b0e63 PA |
2122 | static int internal_breakpoint_number = -1; |
2123 | ||
e62c965a | 2124 | static struct breakpoint * |
a6d9a66e UW |
2125 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2126 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2127 | { |
e62c965a PP |
2128 | struct symtab_and_line sal; |
2129 | struct breakpoint *b; | |
2130 | ||
2131 | init_sal (&sal); /* initialize to zeroes */ | |
2132 | ||
2133 | sal.pc = address; | |
2134 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2135 | sal.pspace = current_program_space; |
e62c965a | 2136 | |
a6d9a66e | 2137 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2138 | b->number = internal_breakpoint_number--; |
2139 | b->disposition = disp_donttouch; | |
2140 | ||
2141 | return b; | |
2142 | } | |
2143 | ||
2144 | static void | |
69de3c6a | 2145 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2146 | { |
69de3c6a | 2147 | struct objfile *objfile; |
e62c965a | 2148 | |
69de3c6a PP |
2149 | ALL_OBJFILES (objfile) |
2150 | { | |
2151 | struct breakpoint *b; | |
2152 | struct minimal_symbol *m; | |
2153 | ||
2154 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2155 | if (m == NULL) | |
2156 | continue; | |
e62c965a | 2157 | |
a6d9a66e UW |
2158 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2159 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2160 | bp_overlay_event); |
2161 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2162 | |
69de3c6a PP |
2163 | if (overlay_debugging == ovly_auto) |
2164 | { | |
2165 | b->enable_state = bp_enabled; | |
2166 | overlay_events_enabled = 1; | |
2167 | } | |
2168 | else | |
2169 | { | |
2170 | b->enable_state = bp_disabled; | |
2171 | overlay_events_enabled = 0; | |
2172 | } | |
e62c965a PP |
2173 | } |
2174 | update_global_location_list (1); | |
2175 | } | |
2176 | ||
0fd8e87f UW |
2177 | static void |
2178 | create_longjmp_master_breakpoint (char *func_name) | |
2179 | { | |
6c95b8df | 2180 | struct program_space *pspace; |
0fd8e87f | 2181 | struct objfile *objfile; |
6c95b8df PA |
2182 | struct cleanup *old_chain; |
2183 | ||
2184 | old_chain = save_current_program_space (); | |
0fd8e87f | 2185 | |
6c95b8df | 2186 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2187 | ALL_OBJFILES (objfile) |
2188 | { | |
2189 | struct breakpoint *b; | |
2190 | struct minimal_symbol *m; | |
2191 | ||
2192 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2193 | continue; | |
2194 | ||
6c95b8df PA |
2195 | set_current_program_space (pspace); |
2196 | ||
0fd8e87f UW |
2197 | m = lookup_minimal_symbol_text (func_name, objfile); |
2198 | if (m == NULL) | |
2199 | continue; | |
2200 | ||
a6d9a66e UW |
2201 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2202 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2203 | bp_longjmp_master); |
2204 | b->addr_string = xstrdup (func_name); | |
2205 | b->enable_state = bp_disabled; | |
2206 | } | |
2207 | update_global_location_list (1); | |
6c95b8df PA |
2208 | |
2209 | do_cleanups (old_chain); | |
0fd8e87f UW |
2210 | } |
2211 | ||
aa7d318d TT |
2212 | /* Create a master std::terminate breakpoint. The actual function |
2213 | looked for is named FUNC_NAME. */ | |
2214 | static void | |
2215 | create_std_terminate_master_breakpoint (const char *func_name) | |
2216 | { | |
2217 | struct program_space *pspace; | |
2218 | struct objfile *objfile; | |
2219 | struct cleanup *old_chain; | |
2220 | ||
2221 | old_chain = save_current_program_space (); | |
2222 | ||
2223 | ALL_PSPACES (pspace) | |
2224 | ALL_OBJFILES (objfile) | |
2225 | { | |
2226 | struct breakpoint *b; | |
2227 | struct minimal_symbol *m; | |
2228 | ||
2229 | set_current_program_space (pspace); | |
2230 | ||
2231 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2232 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2233 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2234 | continue; | |
2235 | ||
2236 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2237 | SYMBOL_VALUE_ADDRESS (m), | |
2238 | bp_std_terminate_master); | |
2239 | b->addr_string = xstrdup (func_name); | |
2240 | b->enable_state = bp_disabled; | |
2241 | } | |
2242 | update_global_location_list (1); | |
2243 | ||
2244 | do_cleanups (old_chain); | |
2245 | } | |
2246 | ||
c906108c | 2247 | void |
fba45db2 | 2248 | update_breakpoints_after_exec (void) |
c906108c | 2249 | { |
c5aa993b JM |
2250 | struct breakpoint *b; |
2251 | struct breakpoint *temp; | |
876fa593 | 2252 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2253 | |
25b22b0a PA |
2254 | /* We're about to delete breakpoints from GDB's lists. If the |
2255 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2256 | writing the breakpoints' "shadow contents" back into memory. The | |
2257 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2258 | do that. Instead, the target is responsible from marking | |
2259 | breakpoints out as soon as it detects an exec. We don't do that | |
2260 | here instead, because there may be other attempts to delete | |
2261 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2262 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2263 | if (bploc->pspace == current_program_space) |
2264 | gdb_assert (!bploc->inserted); | |
c906108c SS |
2265 | |
2266 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2267 | { |
6c95b8df PA |
2268 | if (b->pspace != current_program_space) |
2269 | continue; | |
2270 | ||
c5aa993b JM |
2271 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
2272 | if (b->type == bp_shlib_event) | |
2273 | { | |
2274 | delete_breakpoint (b); | |
2275 | continue; | |
2276 | } | |
c906108c | 2277 | |
4efc6507 DE |
2278 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
2279 | if (b->type == bp_jit_event) | |
2280 | { | |
2281 | delete_breakpoint (b); | |
2282 | continue; | |
2283 | } | |
2284 | ||
1900040c | 2285 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2286 | as must overlay event and longjmp master breakpoints. */ |
2287 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
aa7d318d | 2288 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master) |
c4093a6a JM |
2289 | { |
2290 | delete_breakpoint (b); | |
2291 | continue; | |
2292 | } | |
2293 | ||
c5aa993b JM |
2294 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2295 | if (b->type == bp_step_resume) | |
2296 | { | |
2297 | delete_breakpoint (b); | |
2298 | continue; | |
2299 | } | |
2300 | ||
611c83ae PA |
2301 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2302 | after an exec. */ | |
2303 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
2304 | { | |
2305 | delete_breakpoint (b); | |
2306 | continue; | |
2307 | } | |
2308 | ||
ce78b96d JB |
2309 | if (b->type == bp_catchpoint) |
2310 | { | |
2311 | /* For now, none of the bp_catchpoint breakpoints need to | |
2312 | do anything at this point. In the future, if some of | |
2313 | the catchpoints need to something, we will need to add | |
2314 | a new method, and call this method from here. */ | |
2315 | continue; | |
2316 | } | |
2317 | ||
c5aa993b JM |
2318 | /* bp_finish is a special case. The only way we ought to be able |
2319 | to see one of these when an exec() has happened, is if the user | |
2320 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2321 | carries them to the call-site of the current callee, by setting | |
2322 | a temporary bp there and resuming. But in this case, the finish | |
2323 | will carry them entirely through the vfork & exec. | |
2324 | ||
2325 | We don't want to allow a bp_finish to remain inserted now. But | |
2326 | we can't safely delete it, 'cause finish_command has a handle to | |
2327 | the bp on a bpstat, and will later want to delete it. There's a | |
2328 | chance (and I've seen it happen) that if we delete the bp_finish | |
2329 | here, that its storage will get reused by the time finish_command | |
2330 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2331 | We really must allow finish_command to delete a bp_finish. | |
2332 | ||
53a5351d JM |
2333 | In the absense of a general solution for the "how do we know |
2334 | it's safe to delete something others may have handles to?" | |
2335 | problem, what we'll do here is just uninsert the bp_finish, and | |
2336 | let finish_command delete it. | |
2337 | ||
2338 | (We know the bp_finish is "doomed" in the sense that it's | |
2339 | momentary, and will be deleted as soon as finish_command sees | |
2340 | the inferior stopped. So it doesn't matter that the bp's | |
2341 | address is probably bogus in the new a.out, unlike e.g., the | |
2342 | solib breakpoints.) */ | |
c5aa993b | 2343 | |
c5aa993b JM |
2344 | if (b->type == bp_finish) |
2345 | { | |
2346 | continue; | |
2347 | } | |
2348 | ||
2349 | /* Without a symbolic address, we have little hope of the | |
2350 | pre-exec() address meaning the same thing in the post-exec() | |
2351 | a.out. */ | |
2352 | if (b->addr_string == NULL) | |
2353 | { | |
2354 | delete_breakpoint (b); | |
2355 | continue; | |
2356 | } | |
c5aa993b | 2357 | } |
1900040c | 2358 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2359 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2360 | create_longjmp_master_breakpoint ("longjmp"); |
2361 | create_longjmp_master_breakpoint ("_longjmp"); | |
2362 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2363 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2364 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
2365 | } |
2366 | ||
2367 | int | |
fba45db2 | 2368 | detach_breakpoints (int pid) |
c906108c | 2369 | { |
876fa593 | 2370 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2371 | int val = 0; |
ce696e05 | 2372 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2373 | struct inferior *inf = current_inferior (); |
c5aa993b | 2374 | |
39f77062 | 2375 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2376 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2377 | |
6c95b8df | 2378 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2379 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2380 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2381 | { |
6c95b8df PA |
2382 | if (b->pspace != inf->pspace) |
2383 | continue; | |
2384 | ||
0bde7532 | 2385 | if (b->inserted) |
6c95b8df | 2386 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2387 | } |
d03285ec UW |
2388 | |
2389 | /* Detach single-step breakpoints as well. */ | |
2390 | detach_single_step_breakpoints (); | |
2391 | ||
ce696e05 | 2392 | do_cleanups (old_chain); |
3a1bae8e | 2393 | return val; |
c906108c SS |
2394 | } |
2395 | ||
6c95b8df PA |
2396 | /* Remove the breakpoint location B from the current address space. |
2397 | Note that this is used to detach breakpoints from a child fork. | |
2398 | When we get here, the child isn't in the inferior list, and neither | |
2399 | do we have objects to represent its address space --- we should | |
2400 | *not* look at b->pspace->aspace here. */ | |
2401 | ||
c906108c | 2402 | static int |
6c95b8df | 2403 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2404 | { |
2405 | int val; | |
c5aa993b | 2406 | |
2bdf28a0 JK |
2407 | /* B is never in moribund_locations by our callers. */ |
2408 | gdb_assert (b->owner != NULL); | |
2409 | ||
0bde7532 | 2410 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2411 | /* Permanent breakpoints cannot be inserted or removed. */ |
2412 | return 0; | |
2413 | ||
74960c60 VP |
2414 | /* The type of none suggests that owner is actually deleted. |
2415 | This should not ever happen. */ | |
2416 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2417 | |
2418 | if (b->loc_type == bp_loc_software_breakpoint | |
2419 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2420 | { |
c02f5703 MS |
2421 | /* "Normal" instruction breakpoint: either the standard |
2422 | trap-instruction bp (bp_breakpoint), or a | |
2423 | bp_hardware_breakpoint. */ | |
2424 | ||
2425 | /* First check to see if we have to handle an overlay. */ | |
2426 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2427 | || b->section == NULL |
2428 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2429 | { |
2430 | /* No overlay handling: just remove the breakpoint. */ | |
2431 | ||
0bde7532 | 2432 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2433 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2434 | else |
a6d9a66e | 2435 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2436 | } |
c906108c SS |
2437 | else |
2438 | { | |
c02f5703 MS |
2439 | /* This breakpoint is in an overlay section. |
2440 | Did we set a breakpoint at the LMA? */ | |
2441 | if (!overlay_events_enabled) | |
2442 | { | |
2443 | /* Yes -- overlay event support is not active, so we | |
2444 | should have set a breakpoint at the LMA. Remove it. | |
2445 | */ | |
c02f5703 MS |
2446 | /* Ignore any failures: if the LMA is in ROM, we will |
2447 | have already warned when we failed to insert it. */ | |
0bde7532 | 2448 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2449 | target_remove_hw_breakpoint (b->gdbarch, |
2450 | &b->overlay_target_info); | |
c02f5703 | 2451 | else |
a6d9a66e UW |
2452 | target_remove_breakpoint (b->gdbarch, |
2453 | &b->overlay_target_info); | |
c02f5703 MS |
2454 | } |
2455 | /* Did we set a breakpoint at the VMA? | |
2456 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2457 | if (b->inserted) |
c906108c | 2458 | { |
c02f5703 MS |
2459 | /* Yes -- remove it. Previously we did not bother to |
2460 | remove the breakpoint if the section had been | |
2461 | unmapped, but let's not rely on that being safe. We | |
2462 | don't know what the overlay manager might do. */ | |
0bde7532 | 2463 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2464 | val = target_remove_hw_breakpoint (b->gdbarch, |
2465 | &b->target_info); | |
aa67235e UW |
2466 | |
2467 | /* However, we should remove *software* breakpoints only | |
2468 | if the section is still mapped, or else we overwrite | |
2469 | wrong code with the saved shadow contents. */ | |
2470 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2471 | val = target_remove_breakpoint (b->gdbarch, |
2472 | &b->target_info); | |
aa67235e UW |
2473 | else |
2474 | val = 0; | |
c906108c | 2475 | } |
c02f5703 MS |
2476 | else |
2477 | { | |
2478 | /* No -- not inserted, so no need to remove. No error. */ | |
2479 | val = 0; | |
2480 | } | |
c906108c | 2481 | } |
879d1e6b UW |
2482 | |
2483 | /* In some cases, we might not be able to remove a breakpoint | |
2484 | in a shared library that has already been removed, but we | |
2485 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2486 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2487 | val = 0; |
2488 | ||
c906108c SS |
2489 | if (val) |
2490 | return val; | |
0bde7532 | 2491 | b->inserted = (is == mark_inserted); |
c906108c | 2492 | } |
a5606eee | 2493 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2494 | { |
0bde7532 | 2495 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2496 | val = target_remove_watchpoint (b->address, b->length, |
2497 | b->watchpoint_type); | |
2e70b7b9 | 2498 | |
c906108c | 2499 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2500 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2501 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2502 | b->owner->number); |
c906108c | 2503 | } |
ce78b96d JB |
2504 | else if (b->owner->type == bp_catchpoint |
2505 | && breakpoint_enabled (b->owner) | |
2506 | && !b->duplicate) | |
2507 | { | |
2508 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2509 | ||
2510 | val = b->owner->ops->remove (b->owner); | |
2511 | if (val) | |
2512 | return val; | |
2513 | b->inserted = (is == mark_inserted); | |
2514 | } | |
c906108c SS |
2515 | |
2516 | return 0; | |
2517 | } | |
2518 | ||
6c95b8df PA |
2519 | static int |
2520 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2521 | { | |
2522 | int ret; | |
2523 | struct cleanup *old_chain; | |
2524 | ||
2bdf28a0 JK |
2525 | /* B is never in moribund_locations by our callers. */ |
2526 | gdb_assert (b->owner != NULL); | |
2527 | ||
6c95b8df PA |
2528 | if (b->owner->enable_state == bp_permanent) |
2529 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2530 | return 0; | |
2531 | ||
2532 | /* The type of none suggests that owner is actually deleted. | |
2533 | This should not ever happen. */ | |
2534 | gdb_assert (b->owner->type != bp_none); | |
2535 | ||
2536 | old_chain = save_current_space_and_thread (); | |
2537 | ||
2538 | switch_to_program_space_and_thread (b->pspace); | |
2539 | ||
2540 | ret = remove_breakpoint_1 (b, is); | |
2541 | ||
2542 | do_cleanups (old_chain); | |
2543 | return ret; | |
2544 | } | |
2545 | ||
c906108c SS |
2546 | /* Clear the "inserted" flag in all breakpoints. */ |
2547 | ||
25b22b0a | 2548 | void |
fba45db2 | 2549 | mark_breakpoints_out (void) |
c906108c | 2550 | { |
876fa593 | 2551 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2552 | |
876fa593 | 2553 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2554 | if (bpt->pspace == current_program_space) |
2555 | bpt->inserted = 0; | |
c906108c SS |
2556 | } |
2557 | ||
53a5351d JM |
2558 | /* Clear the "inserted" flag in all breakpoints and delete any |
2559 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2560 | |
2561 | Plus other such housekeeping that has to be done for breakpoints | |
2562 | between runs. | |
2563 | ||
53a5351d JM |
2564 | Note: this function gets called at the end of a run (by |
2565 | generic_mourn_inferior) and when a run begins (by | |
2566 | init_wait_for_inferior). */ | |
c906108c SS |
2567 | |
2568 | ||
2569 | ||
2570 | void | |
fba45db2 | 2571 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2572 | { |
52f0bd74 | 2573 | struct breakpoint *b, *temp; |
876fa593 | 2574 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2575 | int ix; |
6c95b8df | 2576 | struct program_space *pspace = current_program_space; |
c906108c | 2577 | |
50c71eaf PA |
2578 | /* If breakpoint locations are shared across processes, then there's |
2579 | nothing to do. */ | |
2567c7d9 | 2580 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2581 | return; |
2582 | ||
876fa593 | 2583 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df | 2584 | { |
2bdf28a0 | 2585 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
6c95b8df PA |
2586 | if (bpt->pspace == pspace |
2587 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2588 | bpt->inserted = 0; |
6c95b8df | 2589 | } |
075f6582 | 2590 | |
c906108c | 2591 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2592 | { |
6c95b8df PA |
2593 | if (b->loc && b->loc->pspace != pspace) |
2594 | continue; | |
2595 | ||
c5aa993b JM |
2596 | switch (b->type) |
2597 | { | |
2598 | case bp_call_dummy: | |
c906108c | 2599 | |
c5aa993b | 2600 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2601 | cause problems when the inferior is rerun, so we better get |
2602 | rid of it. */ | |
2603 | ||
2604 | case bp_watchpoint_scope: | |
2605 | ||
2606 | /* Also get rid of scope breakpoints. */ | |
2607 | ||
2608 | case bp_shlib_event: | |
2609 | ||
2610 | /* Also remove solib event breakpoints. Their addresses may | |
2611 | have changed since the last time we ran the program. | |
2612 | Actually we may now be debugging against different target; | |
2613 | and so the solib backend that installed this breakpoint may | |
2614 | not be used in by the target. E.g., | |
2615 | ||
2616 | (gdb) file prog-linux | |
2617 | (gdb) run # native linux target | |
2618 | ... | |
2619 | (gdb) kill | |
2620 | (gdb) file prog-win.exe | |
2621 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2622 | */ | |
c906108c | 2623 | |
c5aa993b JM |
2624 | delete_breakpoint (b); |
2625 | break; | |
c906108c | 2626 | |
c5aa993b JM |
2627 | case bp_watchpoint: |
2628 | case bp_hardware_watchpoint: | |
2629 | case bp_read_watchpoint: | |
2630 | case bp_access_watchpoint: | |
c906108c | 2631 | |
c5aa993b JM |
2632 | /* Likewise for watchpoints on local expressions. */ |
2633 | if (b->exp_valid_block != NULL) | |
2634 | delete_breakpoint (b); | |
967af18d | 2635 | else if (context == inf_starting) |
c860120c PM |
2636 | { |
2637 | /* Reset val field to force reread of starting value | |
2638 | in insert_breakpoints. */ | |
2639 | if (b->val) | |
2640 | value_free (b->val); | |
2641 | b->val = NULL; | |
fa4727a6 | 2642 | b->val_valid = 0; |
c860120c | 2643 | } |
c5aa993b JM |
2644 | break; |
2645 | default: | |
c5aa993b JM |
2646 | break; |
2647 | } | |
2648 | } | |
1c5cfe86 PA |
2649 | |
2650 | /* Get rid of the moribund locations. */ | |
2651 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2652 | free_bp_location (bpt); | |
2653 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2654 | } |
2655 | ||
6c95b8df PA |
2656 | /* These functions concern about actual breakpoints inserted in the |
2657 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2658 | we need to hop over the bkpt --- so we check for address space | |
2659 | match, not program space. */ | |
2660 | ||
c2c6d25f JM |
2661 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2662 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2663 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2664 | permanent breakpoint. | |
2665 | - When continuing from a location with an ordinary breakpoint, we | |
2666 | actually single step once before calling insert_breakpoints. | |
2667 | - When continuing from a localion with a permanent breakpoint, we | |
2668 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2669 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2670 | |
c2c6d25f | 2671 | enum breakpoint_here |
6c95b8df | 2672 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2673 | { |
876fa593 | 2674 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2675 | int any_breakpoint_here = 0; |
c906108c | 2676 | |
876fa593 | 2677 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2678 | { |
2679 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2680 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2681 | continue; | |
2682 | ||
2bdf28a0 | 2683 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
468d015d | 2684 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2685 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2686 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2687 | aspace, pc)) | |
075f6582 DJ |
2688 | { |
2689 | if (overlay_debugging | |
2690 | && section_is_overlay (bpt->section) | |
2691 | && !section_is_mapped (bpt->section)) | |
2692 | continue; /* unmapped overlay -- can't be a match */ | |
2693 | else if (bpt->owner->enable_state == bp_permanent) | |
2694 | return permanent_breakpoint_here; | |
2695 | else | |
2696 | any_breakpoint_here = 1; | |
2697 | } | |
2698 | } | |
c906108c | 2699 | |
c2c6d25f | 2700 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2701 | } |
2702 | ||
1c5cfe86 PA |
2703 | /* Return true if there's a moribund breakpoint at PC. */ |
2704 | ||
2705 | int | |
6c95b8df | 2706 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2707 | { |
2708 | struct bp_location *loc; | |
2709 | int ix; | |
2710 | ||
2711 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2712 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2713 | aspace, pc)) | |
1c5cfe86 PA |
2714 | return 1; |
2715 | ||
2716 | return 0; | |
2717 | } | |
c2c6d25f | 2718 | |
c36b740a | 2719 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2720 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2721 | This does not check for single-step breakpoints, which are |
2722 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2723 | |
2724 | int | |
6c95b8df | 2725 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2726 | { |
876fa593 | 2727 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2728 | |
876fa593 | 2729 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2730 | { |
075f6582 DJ |
2731 | if (bpt->loc_type != bp_loc_software_breakpoint |
2732 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2733 | continue; | |
2734 | ||
2735 | if (bpt->inserted | |
6c95b8df PA |
2736 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2737 | aspace, pc)) | |
075f6582 DJ |
2738 | { |
2739 | if (overlay_debugging | |
2740 | && section_is_overlay (bpt->section) | |
2741 | && !section_is_mapped (bpt->section)) | |
2742 | continue; /* unmapped overlay -- can't be a match */ | |
2743 | else | |
2744 | return 1; | |
2745 | } | |
c5aa993b | 2746 | } |
c36b740a VP |
2747 | return 0; |
2748 | } | |
2749 | ||
2750 | /* Returns non-zero iff there's either regular breakpoint | |
2751 | or a single step breakpoint inserted at PC. */ | |
2752 | ||
2753 | int | |
6c95b8df | 2754 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2755 | { |
6c95b8df | 2756 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2757 | return 1; |
c906108c | 2758 | |
6c95b8df | 2759 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2760 | return 1; |
2761 | ||
c906108c SS |
2762 | return 0; |
2763 | } | |
2764 | ||
4fa8626c DJ |
2765 | /* This function returns non-zero iff there is a software breakpoint |
2766 | inserted at PC. */ | |
2767 | ||
2768 | int | |
6c95b8df | 2769 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2770 | { |
876fa593 | 2771 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c | 2772 | |
876fa593 | 2773 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2774 | { |
2775 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2776 | continue; | |
2777 | ||
0d381245 | 2778 | if (bpt->inserted |
6c95b8df PA |
2779 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2780 | aspace, pc)) | |
4fa8626c DJ |
2781 | { |
2782 | if (overlay_debugging | |
2783 | && section_is_overlay (bpt->section) | |
2784 | && !section_is_mapped (bpt->section)) | |
2785 | continue; /* unmapped overlay -- can't be a match */ | |
2786 | else | |
2787 | return 1; | |
2788 | } | |
2789 | } | |
2790 | ||
1aafd4da | 2791 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2792 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2793 | return 1; |
2794 | ||
4fa8626c DJ |
2795 | return 0; |
2796 | } | |
2797 | ||
9093389c PA |
2798 | int |
2799 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2800 | CORE_ADDR addr, ULONGEST len) | |
2801 | { | |
2802 | struct breakpoint *bpt; | |
2803 | ||
2804 | ALL_BREAKPOINTS (bpt) | |
2805 | { | |
2806 | struct bp_location *loc; | |
2807 | ||
2808 | if (bpt->type != bp_hardware_watchpoint | |
2809 | && bpt->type != bp_access_watchpoint) | |
2810 | continue; | |
2811 | ||
2812 | if (!breakpoint_enabled (bpt)) | |
2813 | continue; | |
2814 | ||
2815 | for (loc = bpt->loc; loc; loc = loc->next) | |
2816 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2817 | { | |
2818 | CORE_ADDR l, h; | |
2819 | ||
2820 | /* Check for intersection. */ | |
2821 | l = max (loc->address, addr); | |
2822 | h = min (loc->address + loc->length, addr + len); | |
2823 | if (l < h) | |
2824 | return 1; | |
2825 | } | |
2826 | } | |
2827 | return 0; | |
2828 | } | |
2829 | ||
075f6582 DJ |
2830 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2831 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2832 | |
2833 | int | |
6c95b8df PA |
2834 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2835 | ptid_t ptid) | |
c906108c | 2836 | { |
876fa593 | 2837 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2838 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2839 | int thread = -1; |
4a306c9a | 2840 | int task = 0; |
a6f1cd96 | 2841 | |
876fa593 | 2842 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2843 | { |
075f6582 DJ |
2844 | if (bpt->loc_type != bp_loc_software_breakpoint |
2845 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2846 | continue; | |
2847 | ||
2bdf28a0 | 2848 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
a6f1cd96 JB |
2849 | if (!breakpoint_enabled (bpt->owner) |
2850 | && bpt->owner->enable_state != bp_permanent) | |
2851 | continue; | |
2852 | ||
6c95b8df PA |
2853 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2854 | aspace, pc)) | |
a6f1cd96 JB |
2855 | continue; |
2856 | ||
2857 | if (bpt->owner->thread != -1) | |
075f6582 | 2858 | { |
a6f1cd96 JB |
2859 | /* This is a thread-specific breakpoint. Check that ptid |
2860 | matches that thread. If thread hasn't been computed yet, | |
2861 | it is now time to do so. */ | |
2862 | if (thread == -1) | |
2863 | thread = pid_to_thread_id (ptid); | |
2864 | if (bpt->owner->thread != thread) | |
2865 | continue; | |
075f6582 | 2866 | } |
a6f1cd96 | 2867 | |
4a306c9a JB |
2868 | if (bpt->owner->task != 0) |
2869 | { | |
2870 | /* This is a task-specific breakpoint. Check that ptid | |
2871 | matches that task. If task hasn't been computed yet, | |
2872 | it is now time to do so. */ | |
2873 | if (task == 0) | |
2874 | task = ada_get_task_number (ptid); | |
2875 | if (bpt->owner->task != task) | |
2876 | continue; | |
2877 | } | |
2878 | ||
a6f1cd96 JB |
2879 | if (overlay_debugging |
2880 | && section_is_overlay (bpt->section) | |
2881 | && !section_is_mapped (bpt->section)) | |
2882 | continue; /* unmapped overlay -- can't be a match */ | |
2883 | ||
2884 | return 1; | |
c5aa993b | 2885 | } |
c906108c SS |
2886 | |
2887 | return 0; | |
2888 | } | |
c906108c | 2889 | \f |
c5aa993b | 2890 | |
c906108c SS |
2891 | /* bpstat stuff. External routines' interfaces are documented |
2892 | in breakpoint.h. */ | |
2893 | ||
2894 | int | |
fba45db2 | 2895 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2896 | { |
533be4dd | 2897 | return (ep->type == bp_catchpoint); |
c906108c SS |
2898 | } |
2899 | ||
198757a8 VP |
2900 | void |
2901 | bpstat_free (bpstat bs) | |
2902 | { | |
2903 | if (bs->old_val != NULL) | |
2904 | value_free (bs->old_val); | |
9add0f1b | 2905 | decref_counted_command_line (&bs->commands); |
198757a8 VP |
2906 | xfree (bs); |
2907 | } | |
2908 | ||
c906108c SS |
2909 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2910 | Also free any storage that is part of a bpstat. */ | |
2911 | ||
2912 | void | |
fba45db2 | 2913 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2914 | { |
2915 | bpstat p; | |
2916 | bpstat q; | |
2917 | ||
2918 | if (bsp == 0) | |
2919 | return; | |
2920 | p = *bsp; | |
2921 | while (p != NULL) | |
2922 | { | |
2923 | q = p->next; | |
198757a8 | 2924 | bpstat_free (p); |
c906108c SS |
2925 | p = q; |
2926 | } | |
2927 | *bsp = NULL; | |
2928 | } | |
2929 | ||
2930 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2931 | is part of the bpstat is copied as well. */ | |
2932 | ||
2933 | bpstat | |
fba45db2 | 2934 | bpstat_copy (bpstat bs) |
c906108c SS |
2935 | { |
2936 | bpstat p = NULL; | |
2937 | bpstat tmp; | |
2938 | bpstat retval = NULL; | |
2939 | ||
2940 | if (bs == NULL) | |
2941 | return bs; | |
2942 | ||
2943 | for (; bs != NULL; bs = bs->next) | |
2944 | { | |
2945 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2946 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2947 | incref_counted_command_line (tmp->commands); |
31cc81e9 | 2948 | if (bs->old_val != NULL) |
3c3185ac JK |
2949 | { |
2950 | tmp->old_val = value_copy (bs->old_val); | |
2951 | release_value (tmp->old_val); | |
2952 | } | |
31cc81e9 | 2953 | |
c906108c SS |
2954 | if (p == NULL) |
2955 | /* This is the first thing in the chain. */ | |
2956 | retval = tmp; | |
2957 | else | |
2958 | p->next = tmp; | |
2959 | p = tmp; | |
2960 | } | |
2961 | p->next = NULL; | |
2962 | return retval; | |
2963 | } | |
2964 | ||
2965 | /* Find the bpstat associated with this breakpoint */ | |
2966 | ||
2967 | bpstat | |
fba45db2 | 2968 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2969 | { |
c5aa993b JM |
2970 | if (bsp == NULL) |
2971 | return NULL; | |
c906108c | 2972 | |
c5aa993b JM |
2973 | for (; bsp != NULL; bsp = bsp->next) |
2974 | { | |
4f8d1dc6 | 2975 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2976 | return bsp; |
2977 | } | |
c906108c SS |
2978 | return NULL; |
2979 | } | |
2980 | ||
8671a17b | 2981 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2982 | at. *BSP upon return is a bpstat which points to the remaining |
2983 | breakpoints stopped at (but which is not guaranteed to be good for | |
2984 | anything but further calls to bpstat_num). | |
8671a17b PA |
2985 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2986 | Return -1 if stopped at a breakpoint that has been deleted since | |
2987 | we set it. | |
2988 | Return 1 otherwise. */ | |
c906108c SS |
2989 | |
2990 | int | |
8671a17b | 2991 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2992 | { |
2993 | struct breakpoint *b; | |
2994 | ||
2995 | if ((*bsp) == NULL) | |
2996 | return 0; /* No more breakpoint values */ | |
8671a17b | 2997 | |
4f8d1dc6 VP |
2998 | /* We assume we'll never have several bpstats that |
2999 | correspond to a single breakpoint -- otherwise, | |
3000 | this function might return the same number more | |
3001 | than once and this will look ugly. */ | |
3002 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
3003 | *bsp = (*bsp)->next; |
3004 | if (b == NULL) | |
3005 | return -1; /* breakpoint that's been deleted since */ | |
3006 | ||
3007 | *num = b->number; /* We have its number */ | |
3008 | return 1; | |
c906108c SS |
3009 | } |
3010 | ||
3011 | /* Modify BS so that the actions will not be performed. */ | |
3012 | ||
3013 | void | |
fba45db2 | 3014 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3015 | { |
3016 | for (; bs != NULL; bs = bs->next) | |
3017 | { | |
9add0f1b | 3018 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3019 | bs->commands_left = NULL; |
c906108c SS |
3020 | if (bs->old_val != NULL) |
3021 | { | |
3022 | value_free (bs->old_val); | |
3023 | bs->old_val = NULL; | |
3024 | } | |
3025 | } | |
3026 | } | |
3027 | ||
f3b1572e PA |
3028 | /* Called when a command is about to proceed the inferior. */ |
3029 | ||
3030 | static void | |
3031 | breakpoint_about_to_proceed (void) | |
3032 | { | |
3033 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3034 | { | |
3035 | struct thread_info *tp = inferior_thread (); | |
3036 | ||
3037 | /* Allow inferior function calls in breakpoint commands to not | |
3038 | interrupt the command list. When the call finishes | |
3039 | successfully, the inferior will be standing at the same | |
3040 | breakpoint as if nothing happened. */ | |
3041 | if (tp->in_infcall) | |
3042 | return; | |
3043 | } | |
3044 | ||
3045 | breakpoint_proceeded = 1; | |
3046 | } | |
3047 | ||
c906108c | 3048 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 3049 | static void |
4efb68b1 | 3050 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3051 | { |
3052 | executing_breakpoint_commands = 0; | |
3053 | } | |
3054 | ||
3055 | /* Execute all the commands associated with all the breakpoints at this | |
3056 | location. Any of these commands could cause the process to proceed | |
3057 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 3058 | the global "breakpoint_proceeded" after each command. |
c906108c | 3059 | |
347bddb7 PA |
3060 | Returns true if a breakpoint command resumed the inferior. In that |
3061 | case, it is the caller's responsibility to recall it again with the | |
3062 | bpstat of the current thread. */ | |
3063 | ||
3064 | static int | |
3065 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3066 | { |
3067 | bpstat bs; | |
3068 | struct cleanup *old_chain; | |
347bddb7 | 3069 | int again = 0; |
c906108c SS |
3070 | |
3071 | /* Avoid endless recursion if a `source' command is contained | |
3072 | in bs->commands. */ | |
3073 | if (executing_breakpoint_commands) | |
347bddb7 | 3074 | return 0; |
c906108c SS |
3075 | |
3076 | executing_breakpoint_commands = 1; | |
3077 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3078 | ||
c906108c SS |
3079 | /* This pointer will iterate over the list of bpstat's. */ |
3080 | bs = *bsp; | |
3081 | ||
3082 | breakpoint_proceeded = 0; | |
3083 | for (; bs != NULL; bs = bs->next) | |
3084 | { | |
9add0f1b | 3085 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3086 | struct command_line *cmd; |
3087 | struct cleanup *this_cmd_tree_chain; | |
3088 | ||
3089 | /* Take ownership of the BSP's command tree, if it has one. | |
3090 | ||
3091 | The command tree could legitimately contain commands like | |
3092 | 'step' and 'next', which call clear_proceed_status, which | |
3093 | frees stop_bpstat's command tree. To make sure this doesn't | |
3094 | free the tree we're executing out from under us, we need to | |
3095 | take ownership of the tree ourselves. Since a given bpstat's | |
3096 | commands are only executed once, we don't need to copy it; we | |
3097 | can clear the pointer in the bpstat, and make sure we free | |
3098 | the tree when we're done. */ | |
9add0f1b TT |
3099 | ccmd = bs->commands; |
3100 | bs->commands = NULL; | |
3101 | this_cmd_tree_chain | |
3102 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3103 | cmd = bs->commands_left; | |
3104 | bs->commands_left = NULL; | |
6c50ab1c | 3105 | |
c906108c SS |
3106 | while (cmd != NULL) |
3107 | { | |
3108 | execute_control_command (cmd); | |
3109 | ||
3110 | if (breakpoint_proceeded) | |
3111 | break; | |
3112 | else | |
3113 | cmd = cmd->next; | |
3114 | } | |
6c50ab1c JB |
3115 | |
3116 | /* We can free this command tree now. */ | |
3117 | do_cleanups (this_cmd_tree_chain); | |
3118 | ||
c906108c | 3119 | if (breakpoint_proceeded) |
32c1e744 VP |
3120 | { |
3121 | if (target_can_async_p ()) | |
347bddb7 PA |
3122 | /* If we are in async mode, then the target might be still |
3123 | running, not stopped at any breakpoint, so nothing for | |
3124 | us to do here -- just return to the event loop. */ | |
3125 | ; | |
32c1e744 VP |
3126 | else |
3127 | /* In sync mode, when execute_control_command returns | |
3128 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3129 | Breakpoint commands for that stop were not run, since |
3130 | execute_command does not run breakpoint commands -- | |
3131 | only command_line_handler does, but that one is not | |
3132 | involved in execution of breakpoint commands. So, we | |
3133 | can now execute breakpoint commands. It should be | |
3134 | noted that making execute_command do bpstat actions is | |
3135 | not an option -- in this case we'll have recursive | |
3136 | invocation of bpstat for each breakpoint with a | |
3137 | command, and can easily blow up GDB stack. Instead, we | |
3138 | return true, which will trigger the caller to recall us | |
3139 | with the new stop_bpstat. */ | |
3140 | again = 1; | |
3141 | break; | |
32c1e744 | 3142 | } |
c906108c | 3143 | } |
c2b8ed2c | 3144 | do_cleanups (old_chain); |
347bddb7 PA |
3145 | return again; |
3146 | } | |
3147 | ||
3148 | void | |
3149 | bpstat_do_actions (void) | |
3150 | { | |
3151 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3152 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3153 | && target_has_execution | |
3154 | && !is_exited (inferior_ptid) | |
3155 | && !is_executing (inferior_ptid)) | |
3156 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3157 | and only return when it is stopped at the next breakpoint, we | |
3158 | keep doing breakpoint actions until it returns false to | |
3159 | indicate the inferior was not resumed. */ | |
3160 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
3161 | break; | |
c906108c SS |
3162 | } |
3163 | ||
fa4727a6 DJ |
3164 | /* Print out the (old or new) value associated with a watchpoint. */ |
3165 | ||
3166 | static void | |
3167 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3168 | { | |
3169 | if (val == NULL) | |
3170 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3171 | else | |
79a45b7d TT |
3172 | { |
3173 | struct value_print_options opts; | |
3174 | get_user_print_options (&opts); | |
3175 | value_print (val, stream, &opts); | |
3176 | } | |
fa4727a6 DJ |
3177 | } |
3178 | ||
e514a9d6 | 3179 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3180 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3181 | by having it set different print_it values. |
3182 | ||
3183 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3184 | through the bpstat list of things causing this stop, calling the | |
3185 | print_bp_stop_message function on each one. The behavior of the | |
3186 | print_bp_stop_message function depends on the print_it field of | |
3187 | bpstat. If such field so indicates, call this function here. | |
3188 | ||
3189 | Return values from this routine (ultimately used by bpstat_print() | |
3190 | and normal_stop() to decide what to do): | |
3191 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3192 | don't print anything else. | |
3193 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3194 | that something to be followed by a location. | |
3195 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3196 | that something to be followed by a location. | |
3197 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3198 | analysis. */ | |
c906108c | 3199 | |
917317f4 | 3200 | static enum print_stop_action |
fba45db2 | 3201 | print_it_typical (bpstat bs) |
c906108c | 3202 | { |
f7545552 | 3203 | struct cleanup *old_chain; |
4f8d1dc6 | 3204 | struct breakpoint *b; |
89f9893c | 3205 | const struct bp_location *bl; |
8b93c638 | 3206 | struct ui_stream *stb; |
f7545552 TT |
3207 | int bp_temp = 0; |
3208 | enum print_stop_action result; | |
3209 | ||
c906108c SS |
3210 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3211 | which has since been deleted. */ | |
e514a9d6 | 3212 | if (bs->breakpoint_at == NULL) |
917317f4 | 3213 | return PRINT_UNKNOWN; |
0d381245 | 3214 | bl = bs->breakpoint_at; |
2bdf28a0 JK |
3215 | |
3216 | /* bl->owner can be NULL if it was a momentary breakpoint | |
3217 | which has since been placed into moribund_locations. */ | |
3218 | if (bl->owner == NULL) | |
3219 | return PRINT_UNKNOWN; | |
0d381245 | 3220 | b = bl->owner; |
c906108c | 3221 | |
f7545552 TT |
3222 | stb = ui_out_stream_new (uiout); |
3223 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3224 | ||
4f8d1dc6 | 3225 | switch (b->type) |
c906108c | 3226 | { |
e514a9d6 JM |
3227 | case bp_breakpoint: |
3228 | case bp_hardware_breakpoint: | |
2cec12e5 | 3229 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
3230 | if (bl->address != bl->requested_address) |
3231 | breakpoint_adjustment_warning (bl->requested_address, | |
3232 | bl->address, | |
4f8d1dc6 VP |
3233 | b->number, 1); |
3234 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3235 | if (bp_temp) |
3236 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3237 | else | |
3238 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3239 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3240 | { |
3241 | ui_out_field_string (uiout, "reason", | |
3242 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3243 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3244 | } | |
4f8d1dc6 | 3245 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3246 | ui_out_text (uiout, ", "); |
f7545552 | 3247 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3248 | break; |
3249 | ||
3250 | case bp_shlib_event: | |
917317f4 JM |
3251 | /* Did we stop because the user set the stop_on_solib_events |
3252 | variable? (If so, we report this as a generic, "Stopped due | |
3253 | to shlib event" message.) */ | |
a3f17187 | 3254 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3255 | result = PRINT_NOTHING; |
e514a9d6 JM |
3256 | break; |
3257 | ||
c4093a6a JM |
3258 | case bp_thread_event: |
3259 | /* Not sure how we will get here. | |
3260 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 3261 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3262 | result = PRINT_NOTHING; |
c4093a6a JM |
3263 | break; |
3264 | ||
1900040c MS |
3265 | case bp_overlay_event: |
3266 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 3267 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3268 | result = PRINT_NOTHING; |
1900040c MS |
3269 | break; |
3270 | ||
0fd8e87f UW |
3271 | case bp_longjmp_master: |
3272 | /* These should never be enabled. */ | |
3273 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3274 | result = PRINT_NOTHING; | |
3275 | break; | |
3276 | ||
aa7d318d TT |
3277 | case bp_std_terminate_master: |
3278 | /* These should never be enabled. */ | |
3279 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3280 | result = PRINT_NOTHING; | |
3281 | break; | |
3282 | ||
e514a9d6 JM |
3283 | case bp_watchpoint: |
3284 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3285 | annotate_watchpoint (b->number); |
3286 | if (ui_out_is_mi_like_p (uiout)) | |
3287 | ui_out_field_string | |
3288 | (uiout, "reason", | |
3289 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3290 | mention (b); | |
f7545552 | 3291 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3292 | ui_out_text (uiout, "\nOld value = "); |
3293 | watchpoint_value_print (bs->old_val, stb->stream); | |
3294 | ui_out_field_stream (uiout, "old", stb); | |
3295 | ui_out_text (uiout, "\nNew value = "); | |
3296 | watchpoint_value_print (b->val, stb->stream); | |
3297 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3298 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3299 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3300 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3301 | break; |
3302 | ||
3303 | case bp_read_watchpoint: | |
9dc5e2a9 | 3304 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3305 | ui_out_field_string |
3306 | (uiout, "reason", | |
3307 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3308 | mention (b); |
f7545552 | 3309 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3310 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3311 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3312 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3313 | ui_out_text (uiout, "\n"); |
f7545552 | 3314 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3315 | break; |
3316 | ||
3317 | case bp_access_watchpoint: | |
fa4727a6 | 3318 | if (bs->old_val != NULL) |
8b93c638 | 3319 | { |
4f8d1dc6 | 3320 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3321 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3322 | ui_out_field_string |
3323 | (uiout, "reason", | |
3324 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3325 | mention (b); |
f7545552 | 3326 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3327 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3328 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3329 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3330 | ui_out_text (uiout, "\nNew value = "); |
3331 | } | |
3332 | else | |
3333 | { | |
4f8d1dc6 | 3334 | mention (b); |
9dc5e2a9 | 3335 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3336 | ui_out_field_string |
3337 | (uiout, "reason", | |
3338 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3339 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3340 | ui_out_text (uiout, "\nValue = "); |
3341 | } | |
fa4727a6 | 3342 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3343 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3344 | ui_out_text (uiout, "\n"); |
f7545552 | 3345 | result = PRINT_UNKNOWN; |
e514a9d6 | 3346 | break; |
4ce44c66 | 3347 | |
e514a9d6 JM |
3348 | /* Fall through, we don't deal with these types of breakpoints |
3349 | here. */ | |
3350 | ||
11cf8741 | 3351 | case bp_finish: |
9dc5e2a9 | 3352 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3353 | ui_out_field_string |
3354 | (uiout, "reason", | |
3355 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3356 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3357 | break; |
3358 | ||
e514a9d6 | 3359 | case bp_until: |
9dc5e2a9 | 3360 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3361 | ui_out_field_string |
3362 | (uiout, "reason", | |
3363 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3364 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3365 | break; |
3366 | ||
c2d11a7d | 3367 | case bp_none: |
e514a9d6 JM |
3368 | case bp_longjmp: |
3369 | case bp_longjmp_resume: | |
3370 | case bp_step_resume: | |
e514a9d6 JM |
3371 | case bp_watchpoint_scope: |
3372 | case bp_call_dummy: | |
aa7d318d | 3373 | case bp_std_terminate: |
1042e4c0 | 3374 | case bp_tracepoint: |
7a697b8d | 3375 | case bp_fast_tracepoint: |
4efc6507 | 3376 | case bp_jit_event: |
e514a9d6 | 3377 | default: |
f7545552 TT |
3378 | result = PRINT_UNKNOWN; |
3379 | break; | |
e514a9d6 | 3380 | } |
f7545552 TT |
3381 | |
3382 | do_cleanups (old_chain); | |
3383 | return result; | |
e514a9d6 JM |
3384 | } |
3385 | ||
3386 | /* Generic routine for printing messages indicating why we | |
3387 | stopped. The behavior of this function depends on the value | |
3388 | 'print_it' in the bpstat structure. Under some circumstances we | |
3389 | may decide not to print anything here and delegate the task to | |
3390 | normal_stop(). */ | |
3391 | ||
3392 | static enum print_stop_action | |
3393 | print_bp_stop_message (bpstat bs) | |
3394 | { | |
3395 | switch (bs->print_it) | |
3396 | { | |
3397 | case print_it_noop: | |
3398 | /* Nothing should be printed for this bpstat entry. */ | |
3399 | return PRINT_UNKNOWN; | |
3400 | break; | |
3401 | ||
3402 | case print_it_done: | |
3403 | /* We still want to print the frame, but we already printed the | |
3404 | relevant messages. */ | |
3405 | return PRINT_SRC_AND_LOC; | |
3406 | break; | |
3407 | ||
3408 | case print_it_normal: | |
4f8d1dc6 | 3409 | { |
89f9893c | 3410 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3411 | struct breakpoint *b = bl ? bl->owner : NULL; |
3412 | ||
3413 | /* Normal case. Call the breakpoint's print_it method, or | |
3414 | print_it_typical. */ | |
3415 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3416 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3417 | return b->ops->print_it (b); | |
3418 | else | |
3419 | return print_it_typical (bs); | |
3420 | } | |
3421 | break; | |
3086aeae | 3422 | |
e514a9d6 | 3423 | default: |
8e65ff28 | 3424 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3425 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3426 | break; |
c906108c | 3427 | } |
c906108c SS |
3428 | } |
3429 | ||
e514a9d6 JM |
3430 | /* Print a message indicating what happened. This is called from |
3431 | normal_stop(). The input to this routine is the head of the bpstat | |
3432 | list - a list of the eventpoints that caused this stop. This | |
3433 | routine calls the generic print routine for printing a message | |
3434 | about reasons for stopping. This will print (for example) the | |
3435 | "Breakpoint n," part of the output. The return value of this | |
3436 | routine is one of: | |
c906108c | 3437 | |
917317f4 JM |
3438 | PRINT_UNKNOWN: Means we printed nothing |
3439 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3440 | code to print the location. An example is |
3441 | "Breakpoint 1, " which should be followed by | |
3442 | the location. | |
917317f4 | 3443 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3444 | to also print the location part of the message. |
3445 | An example is the catch/throw messages, which | |
917317f4 JM |
3446 | don't require a location appended to the end. |
3447 | PRINT_NOTHING: We have done some printing and we don't need any | |
3448 | further info to be printed.*/ | |
c906108c | 3449 | |
917317f4 | 3450 | enum print_stop_action |
fba45db2 | 3451 | bpstat_print (bpstat bs) |
c906108c SS |
3452 | { |
3453 | int val; | |
c5aa993b | 3454 | |
c906108c | 3455 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3456 | (Currently all watchpoints go on the bpstat whether hit or not. |
3457 | That probably could (should) be changed, provided care is taken | |
c906108c | 3458 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3459 | for (; bs; bs = bs->next) |
3460 | { | |
3461 | val = print_bp_stop_message (bs); | |
3462 | if (val == PRINT_SRC_ONLY | |
3463 | || val == PRINT_SRC_AND_LOC | |
3464 | || val == PRINT_NOTHING) | |
3465 | return val; | |
3466 | } | |
c906108c | 3467 | |
e514a9d6 JM |
3468 | /* We reached the end of the chain, or we got a null BS to start |
3469 | with and nothing was printed. */ | |
917317f4 | 3470 | return PRINT_UNKNOWN; |
c906108c SS |
3471 | } |
3472 | ||
3473 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3474 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3475 | The argument is a "struct expression *" that has been cast to char * to | |
3476 | make it pass through catch_errors. */ | |
3477 | ||
3478 | static int | |
4efb68b1 | 3479 | breakpoint_cond_eval (void *exp) |
c906108c | 3480 | { |
278cd55f | 3481 | struct value *mark = value_mark (); |
c5aa993b | 3482 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3483 | |
c906108c SS |
3484 | value_free_to_mark (mark); |
3485 | return i; | |
3486 | } | |
3487 | ||
3488 | /* Allocate a new bpstat and chain it to the current one. */ | |
3489 | ||
3490 | static bpstat | |
89f9893c | 3491 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3492 | { |
3493 | bpstat bs; | |
3494 | ||
3495 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3496 | cbs->next = bs; | |
4f8d1dc6 | 3497 | bs->breakpoint_at = bl; |
c906108c SS |
3498 | /* If the condition is false, etc., don't do the commands. */ |
3499 | bs->commands = NULL; | |
9add0f1b | 3500 | bs->commands_left = NULL; |
c906108c SS |
3501 | bs->old_val = NULL; |
3502 | bs->print_it = print_it_normal; | |
3503 | return bs; | |
3504 | } | |
3505 | \f | |
d983da9c DJ |
3506 | /* The target has stopped with waitstatus WS. Check if any hardware |
3507 | watchpoints have triggered, according to the target. */ | |
3508 | ||
3509 | int | |
3510 | watchpoints_triggered (struct target_waitstatus *ws) | |
3511 | { | |
d92524f1 | 3512 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3513 | CORE_ADDR addr; |
3514 | struct breakpoint *b; | |
3515 | ||
3516 | if (!stopped_by_watchpoint) | |
3517 | { | |
3518 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3519 | as not triggered. */ | |
3520 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3521 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3522 | b->watchpoint_triggered = watch_triggered_no; |
3523 | ||
3524 | return 0; | |
3525 | } | |
3526 | ||
3527 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3528 | { | |
3529 | /* We were stopped by a watchpoint, but we don't know where. | |
3530 | Mark all watchpoints as unknown. */ | |
3531 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3532 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3533 | b->watchpoint_triggered = watch_triggered_unknown; |
3534 | ||
3535 | return stopped_by_watchpoint; | |
3536 | } | |
3537 | ||
3538 | /* The target could report the data address. Mark watchpoints | |
3539 | affected by this data address as triggered, and all others as not | |
3540 | triggered. */ | |
3541 | ||
3542 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3543 | if (is_hardware_watchpoint (b)) |
d983da9c | 3544 | { |
a5606eee | 3545 | struct bp_location *loc; |
d983da9c DJ |
3546 | |
3547 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3548 | for (loc = b->loc; loc; loc = loc->next) |
3549 | /* Exact match not required. Within range is | |
3550 | sufficient. */ | |
5009afc5 AS |
3551 | if (target_watchpoint_addr_within_range (¤t_target, |
3552 | addr, loc->address, | |
3553 | loc->length)) | |
a5606eee VP |
3554 | { |
3555 | b->watchpoint_triggered = watch_triggered_yes; | |
3556 | break; | |
3557 | } | |
d983da9c DJ |
3558 | } |
3559 | ||
3560 | return 1; | |
3561 | } | |
3562 | ||
c906108c SS |
3563 | /* Possible return values for watchpoint_check (this can't be an enum |
3564 | because of check_errors). */ | |
3565 | /* The watchpoint has been deleted. */ | |
3566 | #define WP_DELETED 1 | |
3567 | /* The value has changed. */ | |
3568 | #define WP_VALUE_CHANGED 2 | |
3569 | /* The value has not changed. */ | |
3570 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3571 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3572 | #define WP_IGNORE 4 | |
c906108c SS |
3573 | |
3574 | #define BP_TEMPFLAG 1 | |
3575 | #define BP_HARDWAREFLAG 2 | |
3576 | ||
553e4c11 JB |
3577 | /* Evaluate watchpoint condition expression and check if its value changed. |
3578 | ||
3579 | P should be a pointer to struct bpstat, but is defined as a void * | |
3580 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3581 | |
3582 | static int | |
4efb68b1 | 3583 | watchpoint_check (void *p) |
c906108c SS |
3584 | { |
3585 | bpstat bs = (bpstat) p; | |
3586 | struct breakpoint *b; | |
3587 | struct frame_info *fr; | |
3588 | int within_current_scope; | |
3589 | ||
2bdf28a0 JK |
3590 | /* BS is built for existing struct breakpoint. */ |
3591 | gdb_assert (bs->breakpoint_at != NULL); | |
3592 | gdb_assert (bs->breakpoint_at->owner != NULL); | |
4f8d1dc6 | 3593 | b = bs->breakpoint_at->owner; |
c906108c | 3594 | |
f6bc2008 PA |
3595 | /* If this is a local watchpoint, we only want to check if the |
3596 | watchpoint frame is in scope if the current thread is the thread | |
3597 | that was used to create the watchpoint. */ | |
3598 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3599 | return WP_IGNORE; |
f6bc2008 | 3600 | |
c906108c SS |
3601 | if (b->exp_valid_block == NULL) |
3602 | within_current_scope = 1; | |
3603 | else | |
3604 | { | |
edb3359d DJ |
3605 | struct frame_info *frame = get_current_frame (); |
3606 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3607 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3608 | ||
a0f49112 JK |
3609 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3610 | in the function but the stack frame has already been invalidated. | |
3611 | Since we can't rely on the values of local variables after the | |
3612 | stack has been destroyed, we are treating the watchpoint in that | |
3613 | state as `not changed' without further checking. Don't mark | |
3614 | watchpoints as changed if the current frame is in an epilogue - | |
3615 | even if they are in some other frame, our view of the stack | |
3616 | is likely to be wrong and frame_find_by_id could error out. */ | |
3617 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
60e1c644 | 3618 | return WP_IGNORE; |
a0f49112 | 3619 | |
101dcfbe | 3620 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3621 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3622 | |
3623 | /* If we've gotten confused in the unwinder, we might have | |
3624 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3625 | if (within_current_scope) |
3626 | { | |
3627 | struct symbol *function; | |
3628 | ||
3629 | function = get_frame_function (fr); | |
3630 | if (function == NULL | |
3631 | || !contained_in (b->exp_valid_block, | |
3632 | SYMBOL_BLOCK_VALUE (function))) | |
3633 | within_current_scope = 0; | |
3634 | } | |
69fbadd5 | 3635 | |
edb3359d | 3636 | if (within_current_scope) |
c906108c SS |
3637 | /* If we end up stopping, the current frame will get selected |
3638 | in normal_stop. So this call to select_frame won't affect | |
3639 | the user. */ | |
0f7d239c | 3640 | select_frame (fr); |
c906108c | 3641 | } |
c5aa993b | 3642 | |
c906108c SS |
3643 | if (within_current_scope) |
3644 | { | |
3645 | /* We use value_{,free_to_}mark because it could be a | |
3646 | *long* time before we return to the command level and | |
c5aa993b JM |
3647 | call free_all_values. We can't call free_all_values because |
3648 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3649 | |
278cd55f | 3650 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3651 | struct value *new_val; |
3652 | ||
3653 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3654 | |
3655 | /* We use value_equal_contents instead of value_equal because the latter | |
3656 | coerces an array to a pointer, thus comparing just the address of the | |
3657 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3658 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3659 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3660 | { |
fa4727a6 DJ |
3661 | if (new_val != NULL) |
3662 | { | |
3663 | release_value (new_val); | |
3664 | value_free_to_mark (mark); | |
3665 | } | |
c906108c SS |
3666 | bs->old_val = b->val; |
3667 | b->val = new_val; | |
fa4727a6 | 3668 | b->val_valid = 1; |
c906108c SS |
3669 | return WP_VALUE_CHANGED; |
3670 | } | |
3671 | else | |
3672 | { | |
60e1c644 | 3673 | /* Nothing changed. */ |
c906108c | 3674 | value_free_to_mark (mark); |
c906108c SS |
3675 | return WP_VALUE_NOT_CHANGED; |
3676 | } | |
3677 | } | |
3678 | else | |
3679 | { | |
3680 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3681 | if we temporarily ignored the watchpoint, then when |
3682 | we reenter the block in which it is valid it contains | |
3683 | garbage (in the case of a function, it may have two | |
3684 | garbage values, one before and one after the prologue). | |
3685 | So we can't even detect the first assignment to it and | |
3686 | watch after that (since the garbage may or may not equal | |
3687 | the first value assigned). */ | |
4ce44c66 JM |
3688 | /* We print all the stop information in print_it_typical(), but |
3689 | in this case, by the time we call print_it_typical() this bp | |
3690 | will be deleted already. So we have no choice but print the | |
3691 | information here. */ | |
9dc5e2a9 | 3692 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3693 | ui_out_field_string |
3694 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3695 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3696 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3697 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3698 | which its expression is valid.\n"); | |
4ce44c66 | 3699 | |
c906108c | 3700 | if (b->related_breakpoint) |
60e1c644 PA |
3701 | { |
3702 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3703 | b->related_breakpoint->related_breakpoint = NULL; | |
3704 | b->related_breakpoint = NULL; | |
3705 | } | |
b5de0fa7 | 3706 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3707 | |
3708 | return WP_DELETED; | |
3709 | } | |
3710 | } | |
3711 | ||
18a18393 VP |
3712 | /* Return true if it looks like target has stopped due to hitting |
3713 | breakpoint location BL. This function does not check if we | |
3714 | should stop, only if BL explains the stop. */ | |
3715 | static int | |
6c95b8df PA |
3716 | bpstat_check_location (const struct bp_location *bl, |
3717 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3718 | { |
3719 | struct breakpoint *b = bl->owner; | |
3720 | ||
2bdf28a0 JK |
3721 | /* BL is from existing struct breakpoint. */ |
3722 | gdb_assert (b != NULL); | |
3723 | ||
e8595ef6 SS |
3724 | /* By definition, the inferior does not report stops at |
3725 | tracepoints. */ | |
d77f58be | 3726 | if (is_tracepoint (b)) |
e8595ef6 SS |
3727 | return 0; |
3728 | ||
cc60f2e3 | 3729 | if (!is_watchpoint (b) |
18a18393 | 3730 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3731 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3732 | { |
6c95b8df PA |
3733 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3734 | aspace, bp_addr)) | |
18a18393 VP |
3735 | return 0; |
3736 | if (overlay_debugging /* unmapped overlay section */ | |
3737 | && section_is_overlay (bl->section) | |
3738 | && !section_is_mapped (bl->section)) | |
3739 | return 0; | |
3740 | } | |
cc60f2e3 | 3741 | |
18a18393 VP |
3742 | /* Continuable hardware watchpoints are treated as non-existent if the |
3743 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3744 | some data address). Otherwise gdb won't stop on a break instruction | |
3745 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3746 | been defined. Also skip watchpoints which we know did not trigger | |
3747 | (did not match the data address). */ | |
cc60f2e3 PA |
3748 | |
3749 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3750 | && b->watchpoint_triggered == watch_triggered_no) |
3751 | return 0; | |
3752 | ||
3753 | if (b->type == bp_hardware_breakpoint) | |
3754 | { | |
3755 | if (bl->address != bp_addr) | |
3756 | return 0; | |
3757 | if (overlay_debugging /* unmapped overlay section */ | |
3758 | && section_is_overlay (bl->section) | |
3759 | && !section_is_mapped (bl->section)) | |
3760 | return 0; | |
3761 | } | |
ce78b96d | 3762 | |
ce78b96d JB |
3763 | if (b->type == bp_catchpoint) |
3764 | { | |
3765 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3766 | if (!b->ops->breakpoint_hit (b)) | |
3767 | return 0; | |
3768 | } | |
3769 | ||
18a18393 VP |
3770 | return 1; |
3771 | } | |
3772 | ||
3773 | /* If BS refers to a watchpoint, determine if the watched values | |
3774 | has actually changed, and we should stop. If not, set BS->stop | |
3775 | to 0. */ | |
3776 | static void | |
3777 | bpstat_check_watchpoint (bpstat bs) | |
3778 | { | |
2bdf28a0 JK |
3779 | const struct bp_location *bl; |
3780 | struct breakpoint *b; | |
3781 | ||
3782 | /* BS is built for existing struct breakpoint. */ | |
3783 | bl = bs->breakpoint_at; | |
3784 | gdb_assert (bl != NULL); | |
3785 | b = bl->owner; | |
3786 | gdb_assert (b != NULL); | |
18a18393 | 3787 | |
cc60f2e3 | 3788 | if (is_watchpoint (b)) |
18a18393 | 3789 | { |
18a18393 VP |
3790 | int must_check_value = 0; |
3791 | ||
3792 | if (b->type == bp_watchpoint) | |
3793 | /* For a software watchpoint, we must always check the | |
3794 | watched value. */ | |
3795 | must_check_value = 1; | |
3796 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3797 | /* We have a hardware watchpoint (read, write, or access) | |
3798 | and the target earlier reported an address watched by | |
3799 | this watchpoint. */ | |
3800 | must_check_value = 1; | |
3801 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3802 | && b->type == bp_hardware_watchpoint) | |
3803 | /* We were stopped by a hardware watchpoint, but the target could | |
3804 | not report the data address. We must check the watchpoint's | |
3805 | value. Access and read watchpoints are out of luck; without | |
3806 | a data address, we can't figure it out. */ | |
3807 | must_check_value = 1; | |
3808 | ||
3809 | if (must_check_value) | |
3810 | { | |
3811 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3812 | b->number); | |
3813 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3814 | int e = catch_errors (watchpoint_check, bs, message, | |
3815 | RETURN_MASK_ALL); | |
3816 | do_cleanups (cleanups); | |
3817 | switch (e) | |
3818 | { | |
3819 | case WP_DELETED: | |
3820 | /* We've already printed what needs to be printed. */ | |
3821 | bs->print_it = print_it_done; | |
3822 | /* Stop. */ | |
3823 | break; | |
60e1c644 PA |
3824 | case WP_IGNORE: |
3825 | bs->print_it = print_it_noop; | |
3826 | bs->stop = 0; | |
3827 | break; | |
18a18393 VP |
3828 | case WP_VALUE_CHANGED: |
3829 | if (b->type == bp_read_watchpoint) | |
3830 | { | |
85d721b8 PA |
3831 | /* There are two cases to consider here: |
3832 | ||
3833 | 1. we're watching the triggered memory for reads. | |
3834 | In that case, trust the target, and always report | |
3835 | the watchpoint hit to the user. Even though | |
3836 | reads don't cause value changes, the value may | |
3837 | have changed since the last time it was read, and | |
3838 | since we're not trapping writes, we will not see | |
3839 | those, and as such we should ignore our notion of | |
3840 | old value. | |
3841 | ||
3842 | 2. we're watching the triggered memory for both | |
3843 | reads and writes. There are two ways this may | |
3844 | happen: | |
3845 | ||
3846 | 2.1. this is a target that can't break on data | |
3847 | reads only, but can break on accesses (reads or | |
3848 | writes), such as e.g., x86. We detect this case | |
3849 | at the time we try to insert read watchpoints. | |
3850 | ||
3851 | 2.2. otherwise, the target supports read | |
3852 | watchpoints, but, the user set an access or write | |
3853 | watchpoint watching the same memory as this read | |
3854 | watchpoint. | |
3855 | ||
3856 | If we're watching memory writes as well as reads, | |
3857 | ignore watchpoint hits when we find that the | |
3858 | value hasn't changed, as reads don't cause | |
3859 | changes. This still gives false positives when | |
3860 | the program writes the same value to memory as | |
3861 | what there was already in memory (we will confuse | |
3862 | it for a read), but it's much better than | |
3863 | nothing. */ | |
3864 | ||
3865 | int other_write_watchpoint = 0; | |
3866 | ||
3867 | if (bl->watchpoint_type == hw_read) | |
3868 | { | |
3869 | struct breakpoint *other_b; | |
3870 | ||
3871 | ALL_BREAKPOINTS (other_b) | |
3872 | if ((other_b->type == bp_hardware_watchpoint | |
3873 | || other_b->type == bp_access_watchpoint) | |
3874 | && (other_b->watchpoint_triggered | |
3875 | == watch_triggered_yes)) | |
3876 | { | |
3877 | other_write_watchpoint = 1; | |
3878 | break; | |
3879 | } | |
3880 | } | |
3881 | ||
3882 | if (other_write_watchpoint | |
3883 | || bl->watchpoint_type == hw_access) | |
3884 | { | |
3885 | /* We're watching the same memory for writes, | |
3886 | and the value changed since the last time we | |
3887 | updated it, so this trap must be for a write. | |
3888 | Ignore it. */ | |
3889 | bs->print_it = print_it_noop; | |
3890 | bs->stop = 0; | |
3891 | } | |
18a18393 VP |
3892 | } |
3893 | break; | |
3894 | case WP_VALUE_NOT_CHANGED: | |
3895 | if (b->type == bp_hardware_watchpoint | |
3896 | || b->type == bp_watchpoint) | |
3897 | { | |
3898 | /* Don't stop: write watchpoints shouldn't fire if | |
3899 | the value hasn't changed. */ | |
3900 | bs->print_it = print_it_noop; | |
3901 | bs->stop = 0; | |
3902 | } | |
3903 | /* Stop. */ | |
3904 | break; | |
3905 | default: | |
3906 | /* Can't happen. */ | |
3907 | case 0: | |
3908 | /* Error from catch_errors. */ | |
3909 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3910 | if (b->related_breakpoint) | |
3911 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3912 | b->disposition = disp_del_at_next_stop; | |
3913 | /* We've already printed what needs to be printed. */ | |
3914 | bs->print_it = print_it_done; | |
3915 | break; | |
3916 | } | |
3917 | } | |
3918 | else /* must_check_value == 0 */ | |
3919 | { | |
3920 | /* This is a case where some watchpoint(s) triggered, but | |
3921 | not at the address of this watchpoint, or else no | |
3922 | watchpoint triggered after all. So don't print | |
3923 | anything for this watchpoint. */ | |
3924 | bs->print_it = print_it_noop; | |
3925 | bs->stop = 0; | |
3926 | } | |
3927 | } | |
3928 | } | |
3929 | ||
3930 | ||
3931 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3932 | of breakpoint referred to by BS. If we should not stop for this | |
3933 | breakpoint, set BS->stop to 0. */ | |
3934 | static void | |
3935 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3936 | { | |
3937 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3938 | const struct bp_location *bl; |
3939 | struct breakpoint *b; | |
3940 | ||
3941 | /* BS is built for existing struct breakpoint. */ | |
3942 | bl = bs->breakpoint_at; | |
3943 | gdb_assert (bl != NULL); | |
3944 | b = bl->owner; | |
3945 | gdb_assert (b != NULL); | |
18a18393 VP |
3946 | |
3947 | if (frame_id_p (b->frame_id) | |
edb3359d | 3948 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3949 | bs->stop = 0; |
3950 | else if (bs->stop) | |
3951 | { | |
3952 | int value_is_zero = 0; | |
60e1c644 PA |
3953 | struct expression *cond; |
3954 | ||
18a18393 VP |
3955 | /* If this is a scope breakpoint, mark the associated |
3956 | watchpoint as triggered so that we will handle the | |
3957 | out-of-scope event. We'll get to the watchpoint next | |
3958 | iteration. */ | |
3959 | if (b->type == bp_watchpoint_scope) | |
3960 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
60e1c644 PA |
3961 | |
3962 | if (is_watchpoint (b)) | |
3963 | cond = b->cond_exp; | |
3964 | else | |
3965 | cond = bl->cond; | |
3966 | ||
3967 | if (cond && bl->owner->disposition != disp_del_at_next_stop) | |
18a18393 | 3968 | { |
60e1c644 PA |
3969 | int within_current_scope = 1; |
3970 | ||
c5bc3a77 DJ |
3971 | /* We use value_mark and value_free_to_mark because it could |
3972 | be a long time before we return to the command level and | |
3973 | call free_all_values. We can't call free_all_values | |
3974 | because we might be in the middle of evaluating a | |
3975 | function call. */ | |
3976 | struct value *mark = value_mark (); | |
3977 | ||
edb3359d DJ |
3978 | /* Need to select the frame, with all that implies so that |
3979 | the conditions will have the right context. Because we | |
3980 | use the frame, we will not see an inlined function's | |
3981 | variables when we arrive at a breakpoint at the start | |
3982 | of the inlined function; the current frame will be the | |
3983 | call site. */ | |
60e1c644 PA |
3984 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
3985 | select_frame (get_current_frame ()); | |
3986 | else | |
3987 | { | |
3988 | struct frame_info *frame; | |
3989 | ||
3990 | /* For local watchpoint expressions, which particular | |
3991 | instance of a local is being watched matters, so we | |
3992 | keep track of the frame to evaluate the expression | |
3993 | in. To evaluate the condition however, it doesn't | |
3994 | really matter which instantiation of the function | |
3995 | where the condition makes sense triggers the | |
3996 | watchpoint. This allows an expression like "watch | |
3997 | global if q > 10" set in `func', catch writes to | |
3998 | global on all threads that call `func', or catch | |
3999 | writes on all recursive calls of `func' by a single | |
4000 | thread. We simply always evaluate the condition in | |
4001 | the innermost frame that's executing where it makes | |
4002 | sense to evaluate the condition. It seems | |
4003 | intuitive. */ | |
4004 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4005 | if (frame != NULL) | |
4006 | select_frame (frame); | |
4007 | else | |
4008 | within_current_scope = 0; | |
4009 | } | |
4010 | if (within_current_scope) | |
4011 | value_is_zero | |
4012 | = catch_errors (breakpoint_cond_eval, cond, | |
4013 | "Error in testing breakpoint condition:\n", | |
4014 | RETURN_MASK_ALL); | |
4015 | else | |
4016 | { | |
4017 | warning (_("Watchpoint condition cannot be tested " | |
4018 | "in the current scope")); | |
4019 | /* If we failed to set the right context for this | |
4020 | watchpoint, unconditionally report it. */ | |
4021 | value_is_zero = 0; | |
4022 | } | |
18a18393 | 4023 | /* FIXME-someday, should give breakpoint # */ |
c5bc3a77 | 4024 | value_free_to_mark (mark); |
18a18393 | 4025 | } |
60e1c644 PA |
4026 | |
4027 | if (cond && value_is_zero) | |
18a18393 VP |
4028 | { |
4029 | bs->stop = 0; | |
4030 | } | |
4031 | else if (b->thread != -1 && b->thread != thread_id) | |
4032 | { | |
4033 | bs->stop = 0; | |
4034 | } | |
4035 | else if (b->ignore_count > 0) | |
4036 | { | |
4037 | b->ignore_count--; | |
4038 | annotate_ignore_count_change (); | |
4039 | bs->stop = 0; | |
4040 | /* Increase the hit count even though we don't | |
4041 | stop. */ | |
4042 | ++(b->hit_count); | |
4043 | } | |
4044 | } | |
4045 | } | |
4046 | ||
4047 | ||
9709f61c | 4048 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4049 | BP_ADDR in thread PTID. |
c906108c | 4050 | |
d983da9c | 4051 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
4052 | don't understand this stop. Result is a chain of bpstat's such that: |
4053 | ||
c5aa993b | 4054 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4055 | |
c5aa993b | 4056 | if we understand why we stopped, the result is not null. |
c906108c | 4057 | |
c5aa993b JM |
4058 | Each element of the chain refers to a particular breakpoint or |
4059 | watchpoint at which we have stopped. (We may have stopped for | |
4060 | several reasons concurrently.) | |
c906108c | 4061 | |
c5aa993b JM |
4062 | Each element of the chain has valid next, breakpoint_at, |
4063 | commands, FIXME??? fields. */ | |
c906108c SS |
4064 | |
4065 | bpstat | |
6c95b8df PA |
4066 | bpstat_stop_status (struct address_space *aspace, |
4067 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4068 | { |
0d381245 | 4069 | struct breakpoint *b = NULL; |
afe38095 | 4070 | struct bp_location *bl; |
20874c92 | 4071 | struct bp_location *loc; |
c906108c SS |
4072 | /* Root of the chain of bpstat's */ |
4073 | struct bpstats root_bs[1]; | |
4074 | /* Pointer to the last thing in the chain currently. */ | |
4075 | bpstat bs = root_bs; | |
20874c92 | 4076 | int ix; |
429374b8 | 4077 | int need_remove_insert; |
c906108c | 4078 | |
429374b8 JK |
4079 | /* ALL_BP_LOCATIONS iteration would break across |
4080 | update_global_location_list possibly executed by | |
4081 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 4082 | |
429374b8 JK |
4083 | ALL_BREAKPOINTS (b) |
4084 | { | |
4085 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4086 | continue; | |
a5606eee | 4087 | |
429374b8 JK |
4088 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4089 | { | |
4090 | /* For hardware watchpoints, we look only at the first location. | |
cc60f2e3 PA |
4091 | The watchpoint_check function will work on the entire expression, |
4092 | not the individual locations. For read watchpoints, the | |
4093 | watchpoints_triggered function has checked all locations | |
429374b8 JK |
4094 | already. */ |
4095 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
4096 | break; | |
18a18393 | 4097 | |
429374b8 JK |
4098 | if (bl->shlib_disabled) |
4099 | continue; | |
c5aa993b | 4100 | |
429374b8 JK |
4101 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4102 | continue; | |
c5aa993b | 4103 | |
429374b8 | 4104 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 4105 | |
429374b8 | 4106 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 4107 | |
429374b8 JK |
4108 | /* Assume we stop. Should we find watchpoint that is not actually |
4109 | triggered, or if condition of breakpoint is false, we'll reset | |
4110 | 'stop' to 0. */ | |
4111 | bs->stop = 1; | |
4112 | bs->print = 1; | |
d983da9c | 4113 | |
429374b8 JK |
4114 | bpstat_check_watchpoint (bs); |
4115 | if (!bs->stop) | |
4116 | continue; | |
18a18393 | 4117 | |
429374b8 | 4118 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d TT |
4119 | || b->type == bp_longjmp_master |
4120 | || b->type == bp_std_terminate_master) | |
429374b8 JK |
4121 | /* We do not stop for these. */ |
4122 | bs->stop = 0; | |
4123 | else | |
4124 | bpstat_check_breakpoint_conditions (bs, ptid); | |
4125 | ||
4126 | if (bs->stop) | |
4127 | { | |
4128 | ++(b->hit_count); | |
c906108c | 4129 | |
429374b8 JK |
4130 | /* We will stop here */ |
4131 | if (b->disposition == disp_disable) | |
4132 | { | |
4133 | if (b->enable_state != bp_permanent) | |
4134 | b->enable_state = bp_disabled; | |
4135 | update_global_location_list (0); | |
4136 | } | |
4137 | if (b->silent) | |
4138 | bs->print = 0; | |
4139 | bs->commands = b->commands; | |
9add0f1b TT |
4140 | incref_counted_command_line (bs->commands); |
4141 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4142 | if (bs->commands_left | |
4143 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4144 | || (xdb_commands | |
4145 | && strcmp ("Q", | |
4146 | bs->commands_left->line) == 0))) | |
429374b8 | 4147 | { |
9add0f1b | 4148 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4149 | bs->print = 0; |
4150 | } | |
429374b8 JK |
4151 | } |
4152 | ||
4153 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4154 | if (bs->stop == 0 || bs->print == 0) | |
4155 | bs->print_it = print_it_noop; | |
4156 | } | |
4157 | } | |
876fa593 | 4158 | |
20874c92 VP |
4159 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
4160 | { | |
6c95b8df PA |
4161 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
4162 | aspace, bp_addr)) | |
20874c92 VP |
4163 | { |
4164 | bs = bpstat_alloc (loc, bs); | |
4165 | /* For hits of moribund locations, we should just proceed. */ | |
4166 | bs->stop = 0; | |
4167 | bs->print = 0; | |
4168 | bs->print_it = print_it_noop; | |
4169 | } | |
4170 | } | |
4171 | ||
c906108c | 4172 | bs->next = NULL; /* Terminate the chain */ |
c906108c | 4173 | |
d983da9c DJ |
4174 | /* If we aren't stopping, the value of some hardware watchpoint may |
4175 | not have changed, but the intermediate memory locations we are | |
4176 | watching may have. Don't bother if we're stopping; this will get | |
4177 | done later. */ | |
d832cb68 | 4178 | need_remove_insert = 0; |
1f7ccab2 | 4179 | if (! bpstat_causes_stop (root_bs->next)) |
d983da9c DJ |
4180 | for (bs = root_bs->next; bs != NULL; bs = bs->next) |
4181 | if (!bs->stop | |
20874c92 | 4182 | && bs->breakpoint_at->owner |
2d134ed3 | 4183 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 4184 | { |
2d134ed3 PA |
4185 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
4186 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
4187 | Prevent further code from trying to use it. */ | |
a5606eee | 4188 | bs->breakpoint_at = NULL; |
d832cb68 | 4189 | need_remove_insert = 1; |
d983da9c DJ |
4190 | } |
4191 | ||
d832cb68 | 4192 | if (need_remove_insert) |
2d134ed3 | 4193 | update_global_location_list (1); |
d832cb68 | 4194 | |
d983da9c | 4195 | return root_bs->next; |
c906108c SS |
4196 | } |
4197 | \f | |
4198 | /* Tell what to do about this bpstat. */ | |
4199 | struct bpstat_what | |
fba45db2 | 4200 | bpstat_what (bpstat bs) |
c906108c SS |
4201 | { |
4202 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
4203 | enum class |
4204 | { | |
4205 | /* This bpstat element has no effect on the main_action. */ | |
4206 | no_effect = 0, | |
4207 | ||
4208 | /* There was a watchpoint, stop but don't print. */ | |
4209 | wp_silent, | |
c906108c | 4210 | |
c5aa993b JM |
4211 | /* There was a watchpoint, stop and print. */ |
4212 | wp_noisy, | |
c906108c | 4213 | |
c5aa993b JM |
4214 | /* There was a breakpoint but we're not stopping. */ |
4215 | bp_nostop, | |
c906108c | 4216 | |
c5aa993b JM |
4217 | /* There was a breakpoint, stop but don't print. */ |
4218 | bp_silent, | |
c906108c | 4219 | |
c5aa993b JM |
4220 | /* There was a breakpoint, stop and print. */ |
4221 | bp_noisy, | |
c906108c | 4222 | |
c5aa993b JM |
4223 | /* We hit the longjmp breakpoint. */ |
4224 | long_jump, | |
c906108c | 4225 | |
c5aa993b JM |
4226 | /* We hit the longjmp_resume breakpoint. */ |
4227 | long_resume, | |
c906108c | 4228 | |
c5aa993b JM |
4229 | /* We hit the step_resume breakpoint. */ |
4230 | step_resume, | |
c906108c | 4231 | |
c5aa993b JM |
4232 | /* We hit the shared library event breakpoint. */ |
4233 | shlib_event, | |
c906108c | 4234 | |
4efc6507 DE |
4235 | /* We hit the jit event breakpoint. */ |
4236 | jit_event, | |
4237 | ||
c5aa993b JM |
4238 | /* This is just used to count how many enums there are. */ |
4239 | class_last | |
c906108c SS |
4240 | }; |
4241 | ||
4242 | /* Here is the table which drives this routine. So that we can | |
4243 | format it pretty, we define some abbreviations for the | |
4244 | enum bpstat_what codes. */ | |
4245 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
4246 | #define ss BPSTAT_WHAT_STOP_SILENT | |
4247 | #define sn BPSTAT_WHAT_STOP_NOISY | |
4248 | #define sgl BPSTAT_WHAT_SINGLE | |
4249 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
4250 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 4251 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 4252 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 4253 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
4254 | |
4255 | /* "Can't happen." Might want to print an error message. | |
4256 | abort() is not out of the question, but chances are GDB is just | |
4257 | a bit confused, not unusable. */ | |
4258 | #define err BPSTAT_WHAT_STOP_NOISY | |
4259 | ||
4260 | /* Given an old action and a class, come up with a new action. */ | |
4261 | /* One interesting property of this table is that wp_silent is the same | |
4262 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
4263 | after stopping, the check for whether to step over a breakpoint | |
4264 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
4265 | reference to how we stopped. We retain separate wp_silent and |
4266 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
4267 | |
4268 | Another possibly interesting property of this table is that | |
4269 | there's a partial ordering, priority-like, of the actions. Once | |
4270 | you've decided that some action is appropriate, you'll never go | |
4271 | back and decide something of a lower priority is better. The | |
4272 | ordering is: | |
4273 | ||
4efc6507 DE |
4274 | kc < jit clr sgl shl slr sn sr ss |
4275 | sgl < jit shl slr sn sr ss | |
4276 | slr < jit err shl sn sr ss | |
4277 | clr < jit err shl sn sr ss | |
4278 | ss < jit shl sn sr | |
4279 | sn < jit shl sr | |
4280 | jit < shl sr | |
d81191fc | 4281 | shl < sr |
4d5b2cd7 | 4282 | sr < |
c5aa993b | 4283 | |
43ff13b4 JM |
4284 | What I think this means is that we don't need a damned table |
4285 | here. If you just put the rows and columns in the right order, | |
4286 | it'd look awfully regular. We could simply walk the bpstat list | |
4287 | and choose the highest priority action we find, with a little | |
78b6a731 | 4288 | logic to handle the 'err' cases. */ |
c906108c SS |
4289 | |
4290 | /* step_resume entries: a step resume breakpoint overrides another | |
4291 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 4292 | at where we set the step_resume breakpoint). */ |
c906108c SS |
4293 | |
4294 | static const enum bpstat_what_main_action | |
c5aa993b JM |
4295 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
4296 | { | |
4297 | /* old action */ | |
4efc6507 DE |
4298 | /* kc ss sn sgl slr clr sr shl jit */ |
4299 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
4300 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4301 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4302 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
4303 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4304 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4305 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
4306 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
4307 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
4308 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
4309 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 4310 | }; |
c906108c SS |
4311 | |
4312 | #undef kc | |
4313 | #undef ss | |
4314 | #undef sn | |
4315 | #undef sgl | |
4316 | #undef slr | |
4317 | #undef clr | |
c906108c SS |
4318 | #undef err |
4319 | #undef sr | |
4320 | #undef ts | |
4321 | #undef shl | |
4efc6507 | 4322 | #undef jit |
c906108c SS |
4323 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
4324 | struct bpstat_what retval; | |
4325 | ||
aa7d318d | 4326 | retval.call_dummy = STOP_NONE; |
c906108c SS |
4327 | for (; bs != NULL; bs = bs->next) |
4328 | { | |
4329 | enum class bs_class = no_effect; | |
4330 | if (bs->breakpoint_at == NULL) | |
4331 | /* I suspect this can happen if it was a momentary breakpoint | |
4332 | which has since been deleted. */ | |
4333 | continue; | |
20874c92 VP |
4334 | if (bs->breakpoint_at->owner == NULL) |
4335 | bs_class = bp_nostop; | |
4336 | else | |
4f8d1dc6 | 4337 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
4338 | { |
4339 | case bp_none: | |
4340 | continue; | |
4341 | ||
4342 | case bp_breakpoint: | |
4343 | case bp_hardware_breakpoint: | |
4344 | case bp_until: | |
4345 | case bp_finish: | |
4346 | if (bs->stop) | |
4347 | { | |
4348 | if (bs->print) | |
4349 | bs_class = bp_noisy; | |
4350 | else | |
4351 | bs_class = bp_silent; | |
4352 | } | |
4353 | else | |
4354 | bs_class = bp_nostop; | |
4355 | break; | |
4356 | case bp_watchpoint: | |
4357 | case bp_hardware_watchpoint: | |
4358 | case bp_read_watchpoint: | |
4359 | case bp_access_watchpoint: | |
4360 | if (bs->stop) | |
4361 | { | |
4362 | if (bs->print) | |
4363 | bs_class = wp_noisy; | |
4364 | else | |
4365 | bs_class = wp_silent; | |
4366 | } | |
4367 | else | |
53a5351d JM |
4368 | /* There was a watchpoint, but we're not stopping. |
4369 | This requires no further action. */ | |
c906108c SS |
4370 | bs_class = no_effect; |
4371 | break; | |
4372 | case bp_longjmp: | |
4373 | bs_class = long_jump; | |
4374 | break; | |
4375 | case bp_longjmp_resume: | |
4376 | bs_class = long_resume; | |
4377 | break; | |
4378 | case bp_step_resume: | |
4379 | if (bs->stop) | |
4380 | { | |
4381 | bs_class = step_resume; | |
4382 | } | |
4383 | else | |
4384 | /* It is for the wrong frame. */ | |
4385 | bs_class = bp_nostop; | |
4386 | break; | |
c906108c SS |
4387 | case bp_watchpoint_scope: |
4388 | bs_class = bp_nostop; | |
4389 | break; | |
c5aa993b JM |
4390 | case bp_shlib_event: |
4391 | bs_class = shlib_event; | |
4392 | break; | |
4efc6507 DE |
4393 | case bp_jit_event: |
4394 | bs_class = jit_event; | |
4395 | break; | |
c4093a6a | 4396 | case bp_thread_event: |
1900040c | 4397 | case bp_overlay_event: |
0fd8e87f | 4398 | case bp_longjmp_master: |
aa7d318d | 4399 | case bp_std_terminate_master: |
c4093a6a JM |
4400 | bs_class = bp_nostop; |
4401 | break; | |
ce78b96d | 4402 | case bp_catchpoint: |
c5aa993b JM |
4403 | if (bs->stop) |
4404 | { | |
4405 | if (bs->print) | |
4406 | bs_class = bp_noisy; | |
4407 | else | |
4408 | bs_class = bp_silent; | |
4409 | } | |
4410 | else | |
53a5351d JM |
4411 | /* There was a catchpoint, but we're not stopping. |
4412 | This requires no further action. */ | |
c5aa993b JM |
4413 | bs_class = no_effect; |
4414 | break; | |
c906108c | 4415 | case bp_call_dummy: |
53a5351d JM |
4416 | /* Make sure the action is stop (silent or noisy), |
4417 | so infrun.c pops the dummy frame. */ | |
c906108c | 4418 | bs_class = bp_silent; |
aa7d318d TT |
4419 | retval.call_dummy = STOP_STACK_DUMMY; |
4420 | break; | |
4421 | case bp_std_terminate: | |
4422 | /* Make sure the action is stop (silent or noisy), | |
4423 | so infrun.c pops the dummy frame. */ | |
4424 | bs_class = bp_silent; | |
4425 | retval.call_dummy = STOP_STD_TERMINATE; | |
c906108c | 4426 | break; |
1042e4c0 | 4427 | case bp_tracepoint: |
7a697b8d | 4428 | case bp_fast_tracepoint: |
1042e4c0 SS |
4429 | /* Tracepoint hits should not be reported back to GDB, and |
4430 | if one got through somehow, it should have been filtered | |
4431 | out already. */ | |
4432 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4433 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 4434 | break; |
c906108c | 4435 | } |
c5aa993b | 4436 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
4437 | } |
4438 | retval.main_action = current_action; | |
4439 | return retval; | |
4440 | } | |
4441 | ||
4442 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4443 | without hardware support). This isn't related to a specific bpstat, | |
4444 | just to things like whether watchpoints are set. */ | |
4445 | ||
c5aa993b | 4446 | int |
fba45db2 | 4447 | bpstat_should_step (void) |
c906108c SS |
4448 | { |
4449 | struct breakpoint *b; | |
cc59ec59 | 4450 | |
c906108c | 4451 | ALL_BREAKPOINTS (b) |
717a8278 | 4452 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4453 | return 1; |
c906108c SS |
4454 | return 0; |
4455 | } | |
4456 | ||
67822962 PA |
4457 | int |
4458 | bpstat_causes_stop (bpstat bs) | |
4459 | { | |
4460 | for (; bs != NULL; bs = bs->next) | |
4461 | if (bs->stop) | |
4462 | return 1; | |
4463 | ||
4464 | return 0; | |
4465 | } | |
4466 | ||
c906108c | 4467 | \f |
c5aa993b | 4468 | |
859825b8 JK |
4469 | /* Print the LOC location out of the list of B->LOC locations. */ |
4470 | ||
0d381245 VP |
4471 | static void print_breakpoint_location (struct breakpoint *b, |
4472 | struct bp_location *loc, | |
4473 | char *wrap_indent, | |
4474 | struct ui_stream *stb) | |
4475 | { | |
6c95b8df PA |
4476 | struct cleanup *old_chain = save_current_program_space (); |
4477 | ||
859825b8 JK |
4478 | if (loc != NULL && loc->shlib_disabled) |
4479 | loc = NULL; | |
4480 | ||
6c95b8df PA |
4481 | if (loc != NULL) |
4482 | set_current_program_space (loc->pspace); | |
4483 | ||
859825b8 | 4484 | if (b->source_file && loc) |
0d381245 VP |
4485 | { |
4486 | struct symbol *sym | |
4487 | = find_pc_sect_function (loc->address, loc->section); | |
4488 | if (sym) | |
4489 | { | |
4490 | ui_out_text (uiout, "in "); | |
4491 | ui_out_field_string (uiout, "func", | |
4492 | SYMBOL_PRINT_NAME (sym)); | |
4493 | ui_out_wrap_hint (uiout, wrap_indent); | |
4494 | ui_out_text (uiout, " at "); | |
4495 | } | |
4496 | ui_out_field_string (uiout, "file", b->source_file); | |
4497 | ui_out_text (uiout, ":"); | |
4498 | ||
4499 | if (ui_out_is_mi_like_p (uiout)) | |
4500 | { | |
4501 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4502 | char *fullname = symtab_to_fullname (sal.symtab); | |
4503 | ||
4504 | if (fullname) | |
4505 | ui_out_field_string (uiout, "fullname", fullname); | |
4506 | } | |
4507 | ||
4508 | ui_out_field_int (uiout, "line", b->line_number); | |
4509 | } | |
859825b8 | 4510 | else if (loc) |
0d381245 | 4511 | { |
22e722e1 DJ |
4512 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4513 | demangle, ""); | |
0d381245 VP |
4514 | ui_out_field_stream (uiout, "at", stb); |
4515 | } | |
859825b8 JK |
4516 | else |
4517 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4518 | |
4519 | do_cleanups (old_chain); | |
0d381245 VP |
4520 | } |
4521 | ||
c4093a6a | 4522 | /* Print B to gdb_stdout. */ |
c906108c | 4523 | static void |
0d381245 VP |
4524 | print_one_breakpoint_location (struct breakpoint *b, |
4525 | struct bp_location *loc, | |
4526 | int loc_number, | |
a6d9a66e | 4527 | struct bp_location **last_loc, |
6c95b8df PA |
4528 | int print_address_bits, |
4529 | int allflag) | |
c906108c | 4530 | { |
52f0bd74 | 4531 | struct command_line *l; |
c4093a6a JM |
4532 | struct ep_type_description |
4533 | { | |
4534 | enum bptype type; | |
4535 | char *description; | |
4536 | }; | |
4537 | static struct ep_type_description bptypes[] = | |
c906108c | 4538 | { |
c5aa993b JM |
4539 | {bp_none, "?deleted?"}, |
4540 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4541 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4542 | {bp_until, "until"}, |
4543 | {bp_finish, "finish"}, | |
4544 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4545 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4546 | {bp_read_watchpoint, "read watchpoint"}, |
4547 | {bp_access_watchpoint, "acc watchpoint"}, | |
4548 | {bp_longjmp, "longjmp"}, | |
4549 | {bp_longjmp_resume, "longjmp resume"}, | |
4550 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4551 | {bp_watchpoint_scope, "watchpoint scope"}, |
4552 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4553 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4554 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4555 | {bp_thread_event, "thread events"}, |
1900040c | 4556 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4557 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4558 | {bp_std_terminate_master, "std::terminate master"}, |
ce78b96d | 4559 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4560 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4561 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4562 | {bp_jit_event, "jit events"}, |
c5aa993b | 4563 | }; |
c4093a6a | 4564 | |
c2c6d25f | 4565 | static char bpenables[] = "nynny"; |
c906108c | 4566 | char wrap_indent[80]; |
8b93c638 JM |
4567 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4568 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4569 | struct cleanup *bkpt_chain; |
c906108c | 4570 | |
0d381245 VP |
4571 | int header_of_multiple = 0; |
4572 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4573 | struct value_print_options opts; |
4574 | ||
4575 | get_user_print_options (&opts); | |
0d381245 VP |
4576 | |
4577 | gdb_assert (!loc || loc_number != 0); | |
4578 | /* See comment in print_one_breakpoint concerning | |
4579 | treatment of breakpoints with single disabled | |
4580 | location. */ | |
4581 | if (loc == NULL | |
4582 | && (b->loc != NULL | |
4583 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4584 | header_of_multiple = 1; | |
4585 | if (loc == NULL) | |
4586 | loc = b->loc; | |
4587 | ||
c4093a6a | 4588 | annotate_record (); |
3b31d625 | 4589 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4590 | |
4591 | /* 1 */ | |
4592 | annotate_field (0); | |
0d381245 VP |
4593 | if (part_of_multiple) |
4594 | { | |
4595 | char *formatted; | |
0c6773c1 | 4596 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4597 | ui_out_field_string (uiout, "number", formatted); |
4598 | xfree (formatted); | |
4599 | } | |
4600 | else | |
4601 | { | |
4602 | ui_out_field_int (uiout, "number", b->number); | |
4603 | } | |
c4093a6a JM |
4604 | |
4605 | /* 2 */ | |
4606 | annotate_field (1); | |
0d381245 VP |
4607 | if (part_of_multiple) |
4608 | ui_out_field_skip (uiout, "type"); | |
4609 | else | |
4610 | { | |
4611 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4612 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4613 | internal_error (__FILE__, __LINE__, | |
4614 | _("bptypes table does not describe type #%d."), | |
4615 | (int) b->type); | |
4616 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4617 | } | |
c4093a6a JM |
4618 | |
4619 | /* 3 */ | |
4620 | annotate_field (2); | |
0d381245 VP |
4621 | if (part_of_multiple) |
4622 | ui_out_field_skip (uiout, "disp"); | |
4623 | else | |
2cec12e5 | 4624 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4625 | |
c4093a6a JM |
4626 | |
4627 | /* 4 */ | |
4628 | annotate_field (3); | |
0d381245 | 4629 | if (part_of_multiple) |
54e52265 | 4630 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4631 | else |
54e52265 VP |
4632 | ui_out_field_fmt (uiout, "enabled", "%c", |
4633 | bpenables[(int) b->enable_state]); | |
4634 | ui_out_spaces (uiout, 2); | |
0d381245 | 4635 | |
c4093a6a JM |
4636 | |
4637 | /* 5 and 6 */ | |
4638 | strcpy (wrap_indent, " "); | |
79a45b7d | 4639 | if (opts.addressprint) |
75ac9d7b | 4640 | { |
a6d9a66e | 4641 | if (print_address_bits <= 32) |
75ac9d7b MS |
4642 | strcat (wrap_indent, " "); |
4643 | else | |
4644 | strcat (wrap_indent, " "); | |
4645 | } | |
c906108c | 4646 | |
3086aeae | 4647 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4648 | { |
4649 | /* Although the print_one can possibly print | |
4650 | all locations, calling it here is not likely | |
4651 | to get any nice result. So, make sure there's | |
4652 | just one location. */ | |
4653 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4654 | b->ops->print_one (b, last_loc); |
0d381245 | 4655 | } |
3086aeae DJ |
4656 | else |
4657 | switch (b->type) | |
4658 | { | |
4659 | case bp_none: | |
4660 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4661 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4662 | break; |
c906108c | 4663 | |
3086aeae DJ |
4664 | case bp_watchpoint: |
4665 | case bp_hardware_watchpoint: | |
4666 | case bp_read_watchpoint: | |
4667 | case bp_access_watchpoint: | |
4668 | /* Field 4, the address, is omitted (which makes the columns | |
4669 | not line up too nicely with the headers, but the effect | |
4670 | is relatively readable). */ | |
79a45b7d | 4671 | if (opts.addressprint) |
3086aeae DJ |
4672 | ui_out_field_skip (uiout, "addr"); |
4673 | annotate_field (5); | |
fa8a61dc | 4674 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4675 | break; |
4676 | ||
3086aeae DJ |
4677 | case bp_breakpoint: |
4678 | case bp_hardware_breakpoint: | |
4679 | case bp_until: | |
4680 | case bp_finish: | |
4681 | case bp_longjmp: | |
4682 | case bp_longjmp_resume: | |
4683 | case bp_step_resume: | |
3086aeae DJ |
4684 | case bp_watchpoint_scope: |
4685 | case bp_call_dummy: | |
aa7d318d | 4686 | case bp_std_terminate: |
3086aeae DJ |
4687 | case bp_shlib_event: |
4688 | case bp_thread_event: | |
4689 | case bp_overlay_event: | |
0fd8e87f | 4690 | case bp_longjmp_master: |
aa7d318d | 4691 | case bp_std_terminate_master: |
1042e4c0 | 4692 | case bp_tracepoint: |
7a697b8d | 4693 | case bp_fast_tracepoint: |
4efc6507 | 4694 | case bp_jit_event: |
79a45b7d | 4695 | if (opts.addressprint) |
3086aeae DJ |
4696 | { |
4697 | annotate_field (4); | |
54e52265 | 4698 | if (header_of_multiple) |
0d381245 | 4699 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4700 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4701 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4702 | else |
5af949e3 UW |
4703 | ui_out_field_core_addr (uiout, "addr", |
4704 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4705 | } |
4706 | annotate_field (5); | |
0d381245 VP |
4707 | if (!header_of_multiple) |
4708 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4709 | if (b->loc) | |
a6d9a66e | 4710 | *last_loc = b->loc; |
3086aeae DJ |
4711 | break; |
4712 | } | |
c906108c | 4713 | |
6c95b8df PA |
4714 | |
4715 | /* For backward compatibility, don't display inferiors unless there | |
4716 | are several. */ | |
4717 | if (loc != NULL | |
4718 | && !header_of_multiple | |
4719 | && (allflag | |
4720 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4721 | && (number_of_program_spaces () > 1 | |
4722 | || number_of_inferiors () > 1) | |
2bdf28a0 JK |
4723 | /* LOC is for existing B, it cannot be in moribund_locations and |
4724 | thus having NULL OWNER. */ | |
6c95b8df PA |
4725 | && loc->owner->type != bp_catchpoint))) |
4726 | { | |
4727 | struct inferior *inf; | |
4728 | int first = 1; | |
4729 | ||
4730 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4731 | { | |
4732 | if (inf->pspace == loc->pspace) | |
4733 | { | |
4734 | if (first) | |
4735 | { | |
4736 | first = 0; | |
4737 | ui_out_text (uiout, " inf "); | |
4738 | } | |
4739 | else | |
4740 | ui_out_text (uiout, ", "); | |
4741 | ui_out_text (uiout, plongest (inf->num)); | |
4742 | } | |
4743 | } | |
4744 | } | |
4745 | ||
4a306c9a | 4746 | if (!part_of_multiple) |
c4093a6a | 4747 | { |
4a306c9a JB |
4748 | if (b->thread != -1) |
4749 | { | |
4750 | /* FIXME: This seems to be redundant and lost here; see the | |
4751 | "stop only in" line a little further down. */ | |
4752 | ui_out_text (uiout, " thread "); | |
4753 | ui_out_field_int (uiout, "thread", b->thread); | |
4754 | } | |
4755 | else if (b->task != 0) | |
4756 | { | |
4757 | ui_out_text (uiout, " task "); | |
4758 | ui_out_field_int (uiout, "task", b->task); | |
4759 | } | |
c4093a6a JM |
4760 | } |
4761 | ||
8b93c638 | 4762 | ui_out_text (uiout, "\n"); |
c4093a6a | 4763 | |
0d381245 | 4764 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4765 | { |
4766 | annotate_field (6); | |
8b93c638 | 4767 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4768 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4769 | the frame ID. */ | |
5af949e3 UW |
4770 | ui_out_field_core_addr (uiout, "frame", |
4771 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4772 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4773 | } |
4774 | ||
0d381245 | 4775 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4776 | { |
f7f9143b JB |
4777 | /* We do not print the condition for Ada exception catchpoints |
4778 | because the condition is an internal implementation detail | |
4779 | that we do not want to expose to the user. */ | |
c4093a6a | 4780 | annotate_field (7); |
d77f58be | 4781 | if (is_tracepoint (b)) |
1042e4c0 SS |
4782 | ui_out_text (uiout, "\ttrace only if "); |
4783 | else | |
4784 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4785 | ui_out_field_string (uiout, "cond", b->cond_string); |
4786 | ui_out_text (uiout, "\n"); | |
4787 | } | |
4788 | ||
0d381245 | 4789 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4790 | { |
4791 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4792 | ui_out_text (uiout, "\tstop only in thread "); |
4793 | ui_out_field_int (uiout, "thread", b->thread); | |
4794 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4795 | } |
4796 | ||
63c715c6 | 4797 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4798 | { |
4799 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4800 | if (ep_is_catchpoint (b)) |
4801 | ui_out_text (uiout, "\tcatchpoint"); | |
4802 | else | |
4803 | ui_out_text (uiout, "\tbreakpoint"); | |
4804 | ui_out_text (uiout, " already hit "); | |
4805 | ui_out_field_int (uiout, "times", b->hit_count); | |
4806 | if (b->hit_count == 1) | |
4807 | ui_out_text (uiout, " time\n"); | |
4808 | else | |
4809 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4810 | } |
4811 | ||
fb40c209 AC |
4812 | /* Output the count also if it is zero, but only if this is |
4813 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4814 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4815 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4816 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4817 | |
0d381245 | 4818 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4819 | { |
4820 | annotate_field (8); | |
8b93c638 JM |
4821 | ui_out_text (uiout, "\tignore next "); |
4822 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4823 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4824 | } |
059fb39f | 4825 | |
9add0f1b | 4826 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4827 | if (!part_of_multiple && l) |
c4093a6a | 4828 | { |
3b31d625 EZ |
4829 | struct cleanup *script_chain; |
4830 | ||
c4093a6a | 4831 | annotate_field (9); |
3b31d625 | 4832 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4833 | print_command_lines (uiout, l, 4); |
3b31d625 | 4834 | do_cleanups (script_chain); |
c4093a6a | 4835 | } |
d24317b4 | 4836 | |
1042e4c0 SS |
4837 | if (!part_of_multiple && b->pass_count) |
4838 | { | |
4839 | annotate_field (10); | |
4840 | ui_out_text (uiout, "\tpass count "); | |
4841 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4842 | ui_out_text (uiout, " \n"); | |
4843 | } | |
4844 | ||
d24317b4 VP |
4845 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4846 | { | |
4847 | if (b->addr_string) | |
4848 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4849 | else if (b->exp_string) | |
4850 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4851 | } | |
4852 | ||
3b31d625 | 4853 | do_cleanups (bkpt_chain); |
8b93c638 | 4854 | do_cleanups (old_chain); |
c4093a6a | 4855 | } |
c5aa993b | 4856 | |
0d381245 VP |
4857 | static void |
4858 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4859 | struct bp_location **last_loc, int print_address_bits, |
4860 | int allflag) | |
0d381245 | 4861 | { |
6c95b8df PA |
4862 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4863 | print_address_bits, allflag); | |
0d381245 VP |
4864 | |
4865 | /* If this breakpoint has custom print function, | |
4866 | it's already printed. Otherwise, print individual | |
4867 | locations, if any. */ | |
4868 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4869 | { | |
4870 | /* If breakpoint has a single location that is | |
4871 | disabled, we print it as if it had | |
4872 | several locations, since otherwise it's hard to | |
4873 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4874 | situation. |
4875 | Note that while hardware watchpoints have | |
4876 | several locations internally, that's no a property | |
4877 | exposed to user. */ | |
0d381245 | 4878 | if (b->loc |
a5606eee | 4879 | && !is_hardware_watchpoint (b) |
0d381245 | 4880 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4881 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4882 | { |
4883 | struct bp_location *loc; | |
4884 | int n = 1; | |
4885 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4886 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4887 | print_address_bits, allflag); |
0d381245 VP |
4888 | } |
4889 | } | |
4890 | } | |
4891 | ||
a6d9a66e UW |
4892 | static int |
4893 | breakpoint_address_bits (struct breakpoint *b) | |
4894 | { | |
4895 | int print_address_bits = 0; | |
4896 | struct bp_location *loc; | |
4897 | ||
4898 | for (loc = b->loc; loc; loc = loc->next) | |
4899 | { | |
c7437ca6 PA |
4900 | int addr_bit; |
4901 | ||
4902 | /* Software watchpoints that aren't watching memory don't have | |
4903 | an address to print. */ | |
4904 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4905 | continue; | |
4906 | ||
4907 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4908 | if (addr_bit > print_address_bits) |
4909 | print_address_bits = addr_bit; | |
4910 | } | |
4911 | ||
4912 | return print_address_bits; | |
4913 | } | |
0d381245 | 4914 | |
c4093a6a JM |
4915 | struct captured_breakpoint_query_args |
4916 | { | |
4917 | int bnum; | |
4918 | }; | |
c5aa993b | 4919 | |
c4093a6a | 4920 | static int |
2b65245e | 4921 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4922 | { |
4923 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4924 | struct breakpoint *b; |
a6d9a66e | 4925 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4926 | |
c4093a6a JM |
4927 | ALL_BREAKPOINTS (b) |
4928 | { | |
4929 | if (args->bnum == b->number) | |
c5aa993b | 4930 | { |
a6d9a66e | 4931 | int print_address_bits = breakpoint_address_bits (b); |
cc59ec59 | 4932 | |
6c95b8df | 4933 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4934 | return GDB_RC_OK; |
c5aa993b | 4935 | } |
c4093a6a JM |
4936 | } |
4937 | return GDB_RC_NONE; | |
4938 | } | |
c5aa993b | 4939 | |
c4093a6a | 4940 | enum gdb_rc |
ce43223b | 4941 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4942 | { |
4943 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 4944 | |
c4093a6a JM |
4945 | args.bnum = bnum; |
4946 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4947 | an error. */ | |
b0b13bb4 DJ |
4948 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4949 | error_message, RETURN_MASK_ALL) < 0) | |
4950 | return GDB_RC_FAIL; | |
4951 | else | |
4952 | return GDB_RC_OK; | |
c4093a6a | 4953 | } |
c5aa993b | 4954 | |
7f3b0473 AC |
4955 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4956 | catchpoints, et.al.). */ | |
4957 | ||
4958 | static int | |
4959 | user_settable_breakpoint (const struct breakpoint *b) | |
4960 | { | |
4961 | return (b->type == bp_breakpoint | |
ce78b96d | 4962 | || b->type == bp_catchpoint |
7f3b0473 | 4963 | || b->type == bp_hardware_breakpoint |
d77f58be | 4964 | || is_tracepoint (b) |
cc60f2e3 | 4965 | || is_watchpoint (b)); |
7f3b0473 AC |
4966 | } |
4967 | ||
4968 | /* Print information on user settable breakpoint (watchpoint, etc) | |
d77f58be SS |
4969 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
4970 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
4971 | FILTER is non-NULL, call it on each breakpoint and only include the | |
4972 | ones for which it returns non-zero. Return the total number of | |
4973 | breakpoints listed. */ | |
c906108c | 4974 | |
d77f58be SS |
4975 | static int |
4976 | breakpoint_1 (int bnum, int allflag, int (*filter) (const struct breakpoint *)) | |
c4093a6a | 4977 | { |
52f0bd74 | 4978 | struct breakpoint *b; |
a6d9a66e | 4979 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4980 | int nr_printable_breakpoints; |
3b31d625 | 4981 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4982 | struct value_print_options opts; |
a6d9a66e | 4983 | int print_address_bits = 0; |
c4093a6a | 4984 | |
79a45b7d TT |
4985 | get_user_print_options (&opts); |
4986 | ||
a6d9a66e UW |
4987 | /* Compute the number of rows in the table, as well as the |
4988 | size required for address fields. */ | |
7f3b0473 AC |
4989 | nr_printable_breakpoints = 0; |
4990 | ALL_BREAKPOINTS (b) | |
4991 | if (bnum == -1 | |
4992 | || bnum == b->number) | |
4993 | { | |
d77f58be SS |
4994 | /* If we have a filter, only list the breakpoints it accepts. */ |
4995 | if (filter && !filter (b)) | |
4996 | continue; | |
4997 | ||
7f3b0473 | 4998 | if (allflag || user_settable_breakpoint (b)) |
a6d9a66e UW |
4999 | { |
5000 | int addr_bit = breakpoint_address_bits (b); | |
5001 | if (addr_bit > print_address_bits) | |
5002 | print_address_bits = addr_bit; | |
5003 | ||
5004 | nr_printable_breakpoints++; | |
5005 | } | |
7f3b0473 AC |
5006 | } |
5007 | ||
79a45b7d | 5008 | if (opts.addressprint) |
3b31d625 EZ |
5009 | bkpttbl_chain |
5010 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
5011 | "BreakpointTable"); | |
8b93c638 | 5012 | else |
3b31d625 EZ |
5013 | bkpttbl_chain |
5014 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
5015 | "BreakpointTable"); | |
8b93c638 | 5016 | |
7f3b0473 | 5017 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5018 | annotate_breakpoints_headers (); |
5019 | if (nr_printable_breakpoints > 0) | |
5020 | annotate_field (0); | |
0d381245 | 5021 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5022 | if (nr_printable_breakpoints > 0) |
5023 | annotate_field (1); | |
5024 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
5025 | if (nr_printable_breakpoints > 0) | |
5026 | annotate_field (2); | |
5027 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
5028 | if (nr_printable_breakpoints > 0) | |
5029 | annotate_field (3); | |
54e52265 | 5030 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5031 | if (opts.addressprint) |
7f3b0473 | 5032 | { |
d7faa9e7 AC |
5033 | if (nr_printable_breakpoints > 0) |
5034 | annotate_field (4); | |
a6d9a66e | 5035 | if (print_address_bits <= 32) |
b25959ec | 5036 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5037 | else |
b25959ec | 5038 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5039 | } |
d7faa9e7 AC |
5040 | if (nr_printable_breakpoints > 0) |
5041 | annotate_field (5); | |
5042 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5043 | ui_out_table_body (uiout); | |
5044 | if (nr_printable_breakpoints > 0) | |
5045 | annotate_breakpoints_table (); | |
7f3b0473 | 5046 | |
c4093a6a | 5047 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5048 | { |
5049 | QUIT; | |
c4093a6a JM |
5050 | if (bnum == -1 |
5051 | || bnum == b->number) | |
5052 | { | |
d77f58be SS |
5053 | /* If we have a filter, only list the breakpoints it accepts. */ |
5054 | if (filter && !filter (b)) | |
5055 | continue; | |
5056 | ||
c4093a6a JM |
5057 | /* We only print out user settable breakpoints unless the |
5058 | allflag is set. */ | |
7f3b0473 | 5059 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 5060 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5061 | } |
bad56014 | 5062 | } |
c4093a6a | 5063 | |
3b31d625 | 5064 | do_cleanups (bkpttbl_chain); |
698384cd | 5065 | |
7f3b0473 | 5066 | if (nr_printable_breakpoints == 0) |
c906108c | 5067 | { |
d77f58be SS |
5068 | /* If there's a filter, let the caller decide how to report empty list. */ |
5069 | if (!filter) | |
5070 | { | |
5071 | if (bnum == -1) | |
5072 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5073 | else | |
5074 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
5075 | bnum); | |
5076 | } | |
c906108c SS |
5077 | } |
5078 | else | |
c4093a6a | 5079 | { |
a6d9a66e UW |
5080 | if (last_loc && !server_command) |
5081 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5082 | } |
c906108c | 5083 | |
c4093a6a JM |
5084 | /* FIXME? Should this be moved up so that it is only called when |
5085 | there have been breakpoints? */ | |
c906108c | 5086 | annotate_breakpoints_table_end (); |
d77f58be SS |
5087 | |
5088 | return nr_printable_breakpoints; | |
c906108c SS |
5089 | } |
5090 | ||
ad443146 SS |
5091 | /* Display the value of default-collect in a way that is generally |
5092 | compatible with the breakpoint list. */ | |
5093 | ||
5094 | static void | |
5095 | default_collect_info (void) | |
5096 | { | |
5097 | /* If it has no value (which is frequently the case), say nothing; a | |
5098 | message like "No default-collect." gets in user's face when it's | |
5099 | not wanted. */ | |
5100 | if (!*default_collect) | |
5101 | return; | |
5102 | ||
5103 | /* The following phrase lines up nicely with per-tracepoint collect | |
5104 | actions. */ | |
5105 | ui_out_text (uiout, "default collect "); | |
5106 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5107 | ui_out_text (uiout, " \n"); | |
5108 | } | |
5109 | ||
c906108c | 5110 | static void |
fba45db2 | 5111 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5112 | { |
5113 | int bnum = -1; | |
5114 | ||
5115 | if (bnum_exp) | |
bb518678 | 5116 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5117 | |
d77f58be | 5118 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5119 | |
5120 | default_collect_info (); | |
d77f58be SS |
5121 | } |
5122 | ||
5123 | static void | |
5124 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5125 | { | |
5126 | int wpnum = -1, num_printed; | |
5127 | ||
5128 | if (wpnum_exp) | |
5129 | wpnum = parse_and_eval_long (wpnum_exp); | |
5130 | ||
5131 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5132 | ||
5133 | if (num_printed == 0) | |
5134 | { | |
5135 | if (wpnum == -1) | |
5136 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5137 | else | |
5138 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5139 | } | |
c906108c SS |
5140 | } |
5141 | ||
7a292a7a | 5142 | static void |
fba45db2 | 5143 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5144 | { |
5145 | int bnum = -1; | |
5146 | ||
5147 | if (bnum_exp) | |
bb518678 | 5148 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5149 | |
d77f58be | 5150 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5151 | |
5152 | default_collect_info (); | |
c906108c SS |
5153 | } |
5154 | ||
0d381245 | 5155 | static int |
714835d5 | 5156 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5157 | struct program_space *pspace, |
714835d5 | 5158 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5159 | { |
5160 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5161 | |
0d381245 VP |
5162 | for (; bl; bl = bl->next) |
5163 | { | |
6c95b8df PA |
5164 | if (bl->pspace == pspace |
5165 | && bl->address == pc | |
0d381245 VP |
5166 | && (!overlay_debugging || bl->section == section)) |
5167 | return 1; | |
5168 | } | |
5169 | return 0; | |
5170 | } | |
5171 | ||
6c95b8df PA |
5172 | /* Print a message describing any breakpoints set at PC. This |
5173 | concerns with logical breakpoints, so we match program spaces, not | |
5174 | address spaces. */ | |
c906108c SS |
5175 | |
5176 | static void | |
6c95b8df PA |
5177 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5178 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5179 | struct obj_section *section, int thread) |
c906108c | 5180 | { |
52f0bd74 AC |
5181 | int others = 0; |
5182 | struct breakpoint *b; | |
c906108c SS |
5183 | |
5184 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5185 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5186 | if (others > 0) |
5187 | { | |
a3f17187 AC |
5188 | if (others == 1) |
5189 | printf_filtered (_("Note: breakpoint ")); | |
5190 | else /* if (others == ???) */ | |
5191 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5192 | ALL_BREAKPOINTS (b) |
6c95b8df | 5193 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5194 | { |
5195 | others--; | |
5196 | printf_filtered ("%d", b->number); | |
5197 | if (b->thread == -1 && thread != -1) | |
5198 | printf_filtered (" (all threads)"); | |
5199 | else if (b->thread != -1) | |
5200 | printf_filtered (" (thread %d)", b->thread); | |
5201 | printf_filtered ("%s%s ", | |
059fb39f | 5202 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5203 | || b->enable_state == bp_call_disabled |
5204 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5205 | ? " (disabled)" |
5206 | : b->enable_state == bp_permanent | |
5207 | ? " (permanent)" | |
5208 | : ""), | |
5209 | (others > 1) ? "," | |
5210 | : ((others == 1) ? " and" : "")); | |
5211 | } | |
a3f17187 | 5212 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5213 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5214 | printf_filtered (".\n"); |
5215 | } | |
5216 | } | |
5217 | \f | |
5218 | /* Set the default place to put a breakpoint | |
5219 | for the `break' command with no arguments. */ | |
5220 | ||
5221 | void | |
6c95b8df PA |
5222 | set_default_breakpoint (int valid, struct program_space *pspace, |
5223 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5224 | int line) |
c906108c SS |
5225 | { |
5226 | default_breakpoint_valid = valid; | |
6c95b8df | 5227 | default_breakpoint_pspace = pspace; |
c906108c SS |
5228 | default_breakpoint_address = addr; |
5229 | default_breakpoint_symtab = symtab; | |
5230 | default_breakpoint_line = line; | |
5231 | } | |
5232 | ||
e4f237da KB |
5233 | /* Return true iff it is meaningful to use the address member of |
5234 | BPT. For some breakpoint types, the address member is irrelevant | |
5235 | and it makes no sense to attempt to compare it to other addresses | |
5236 | (or use it for any other purpose either). | |
5237 | ||
5238 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
5239 | have a zero valued address and we don't want to mark breakpoints of any of |
5240 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
5241 | |
5242 | bp_watchpoint | |
2d134ed3 PA |
5243 | bp_catchpoint |
5244 | ||
5245 | */ | |
e4f237da KB |
5246 | |
5247 | static int | |
5248 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5249 | { | |
5250 | enum bptype type = bpt->type; | |
5251 | ||
2d134ed3 PA |
5252 | return (type != bp_watchpoint && type != bp_catchpoint); |
5253 | } | |
5254 | ||
5255 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5256 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5257 | ||
5258 | static int | |
5259 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5260 | { | |
2bdf28a0 JK |
5261 | /* Both of them must not be in moribund_locations. */ |
5262 | gdb_assert (loc1->owner != NULL); | |
5263 | gdb_assert (loc2->owner != NULL); | |
5264 | ||
85d721b8 PA |
5265 | /* Note that this checks the owner's type, not the location's. In |
5266 | case the target does not support read watchpoints, but does | |
5267 | support access watchpoints, we'll have bp_read_watchpoint | |
5268 | watchpoints with hw_access locations. Those should be considered | |
5269 | duplicates of hw_read locations. The hw_read locations will | |
5270 | become hw_access locations later. */ | |
2d134ed3 PA |
5271 | return (loc1->owner->type == loc2->owner->type |
5272 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5273 | && loc1->address == loc2->address | |
5274 | && loc1->length == loc2->length); | |
e4f237da KB |
5275 | } |
5276 | ||
6c95b8df PA |
5277 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5278 | same breakpoint location. In most targets, this can only be true | |
5279 | if ASPACE1 matches ASPACE2. On targets that have global | |
5280 | breakpoints, the address space doesn't really matter. */ | |
5281 | ||
5282 | static int | |
5283 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5284 | struct address_space *aspace2, CORE_ADDR addr2) | |
5285 | { | |
5286 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5287 | || aspace1 == aspace2) | |
5288 | && addr1 == addr2); | |
5289 | } | |
5290 | ||
2d134ed3 PA |
5291 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5292 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5293 | represent the same location. */ | |
5294 | ||
5295 | static int | |
5296 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5297 | { | |
2bdf28a0 JK |
5298 | int hw_point1, hw_point2; |
5299 | ||
5300 | /* Both of them must not be in moribund_locations. */ | |
5301 | gdb_assert (loc1->owner != NULL); | |
5302 | gdb_assert (loc2->owner != NULL); | |
5303 | ||
5304 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5305 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5306 | |
5307 | if (hw_point1 != hw_point2) | |
5308 | return 0; | |
5309 | else if (hw_point1) | |
5310 | return watchpoint_locations_match (loc1, loc2); | |
5311 | else | |
5312 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5313 | loc2->pspace->aspace, loc2->address); | |
5314 | } | |
5315 | ||
76897487 KB |
5316 | static void |
5317 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5318 | int bnum, int have_bnum) | |
5319 | { | |
5320 | char astr1[40]; | |
5321 | char astr2[40]; | |
5322 | ||
bb599908 PH |
5323 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5324 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5325 | if (have_bnum) |
8a3fe4f8 | 5326 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5327 | bnum, astr1, astr2); |
5328 | else | |
8a3fe4f8 | 5329 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5330 | } |
5331 | ||
5332 | /* Adjust a breakpoint's address to account for architectural constraints | |
5333 | on breakpoint placement. Return the adjusted address. Note: Very | |
5334 | few targets require this kind of adjustment. For most targets, | |
5335 | this function is simply the identity function. */ | |
5336 | ||
5337 | static CORE_ADDR | |
a6d9a66e UW |
5338 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5339 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5340 | { |
a6d9a66e | 5341 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5342 | { |
5343 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5344 | return bpaddr; | |
5345 | } | |
88f7da05 KB |
5346 | else if (bptype == bp_watchpoint |
5347 | || bptype == bp_hardware_watchpoint | |
5348 | || bptype == bp_read_watchpoint | |
5349 | || bptype == bp_access_watchpoint | |
fe798b75 | 5350 | || bptype == bp_catchpoint) |
88f7da05 KB |
5351 | { |
5352 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5353 | have their addresses modified. */ | |
5354 | return bpaddr; | |
5355 | } | |
76897487 KB |
5356 | else |
5357 | { | |
5358 | CORE_ADDR adjusted_bpaddr; | |
5359 | ||
5360 | /* Some targets have architectural constraints on the placement | |
5361 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5362 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5363 | |
5364 | /* An adjusted breakpoint address can significantly alter | |
5365 | a user's expectations. Print a warning if an adjustment | |
5366 | is required. */ | |
5367 | if (adjusted_bpaddr != bpaddr) | |
5368 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5369 | ||
5370 | return adjusted_bpaddr; | |
5371 | } | |
5372 | } | |
5373 | ||
7cc221ef DJ |
5374 | /* Allocate a struct bp_location. */ |
5375 | ||
26bb91f3 | 5376 | static struct bp_location * |
39d61571 | 5377 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5378 | { |
afe38095 | 5379 | struct bp_location *loc; |
7cc221ef DJ |
5380 | |
5381 | loc = xmalloc (sizeof (struct bp_location)); | |
5382 | memset (loc, 0, sizeof (*loc)); | |
5383 | ||
e049a4b5 | 5384 | loc->owner = bpt; |
511a6cd4 | 5385 | loc->cond = NULL; |
0d381245 VP |
5386 | loc->shlib_disabled = 0; |
5387 | loc->enabled = 1; | |
e049a4b5 | 5388 | |
39d61571 | 5389 | switch (bpt->type) |
e049a4b5 DJ |
5390 | { |
5391 | case bp_breakpoint: | |
5392 | case bp_until: | |
5393 | case bp_finish: | |
5394 | case bp_longjmp: | |
5395 | case bp_longjmp_resume: | |
5396 | case bp_step_resume: | |
e049a4b5 DJ |
5397 | case bp_watchpoint_scope: |
5398 | case bp_call_dummy: | |
aa7d318d | 5399 | case bp_std_terminate: |
e049a4b5 DJ |
5400 | case bp_shlib_event: |
5401 | case bp_thread_event: | |
5402 | case bp_overlay_event: | |
4efc6507 | 5403 | case bp_jit_event: |
0fd8e87f | 5404 | case bp_longjmp_master: |
aa7d318d | 5405 | case bp_std_terminate_master: |
e049a4b5 DJ |
5406 | loc->loc_type = bp_loc_software_breakpoint; |
5407 | break; | |
5408 | case bp_hardware_breakpoint: | |
5409 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5410 | break; | |
5411 | case bp_hardware_watchpoint: | |
5412 | case bp_read_watchpoint: | |
5413 | case bp_access_watchpoint: | |
5414 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5415 | break; | |
5416 | case bp_watchpoint: | |
ce78b96d | 5417 | case bp_catchpoint: |
15c3d785 PA |
5418 | case bp_tracepoint: |
5419 | case bp_fast_tracepoint: | |
e049a4b5 DJ |
5420 | loc->loc_type = bp_loc_other; |
5421 | break; | |
5422 | default: | |
e2e0b3e5 | 5423 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5424 | } |
5425 | ||
7cc221ef DJ |
5426 | return loc; |
5427 | } | |
5428 | ||
fe3f5fa8 VP |
5429 | static void free_bp_location (struct bp_location *loc) |
5430 | { | |
1a2ab13a JK |
5431 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
5432 | /* FIXME, how can we find all bpstat's? | |
5433 | We just check stop_bpstat for now. Note that we cannot just | |
5434 | remove bpstats pointing at bpt from the stop_bpstat list | |
5435 | entirely, as breakpoint commands are associated with the bpstat; | |
5436 | if we remove it here, then the later call to | |
5437 | bpstat_do_actions (&stop_bpstat); | |
5438 | in event-top.c won't do anything, and temporary breakpoints | |
5439 | with commands won't work. */ | |
5440 | ||
5441 | iterate_over_threads (bpstat_remove_bp_location_callback, loc); | |
5442 | ||
fe3f5fa8 VP |
5443 | if (loc->cond) |
5444 | xfree (loc->cond); | |
74960c60 VP |
5445 | |
5446 | if (loc->function_name) | |
5447 | xfree (loc->function_name); | |
5448 | ||
fe3f5fa8 VP |
5449 | xfree (loc); |
5450 | } | |
5451 | ||
0d381245 VP |
5452 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
5453 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 5454 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 5455 | |
c40e75cd | 5456 | static struct breakpoint * |
a6d9a66e UW |
5457 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5458 | enum bptype bptype) | |
c906108c | 5459 | { |
52f0bd74 | 5460 | struct breakpoint *b, *b1; |
c906108c SS |
5461 | |
5462 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5463 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5464 | |
4d28f7a8 | 5465 | b->type = bptype; |
a6d9a66e | 5466 | b->gdbarch = gdbarch; |
c906108c SS |
5467 | b->language = current_language->la_language; |
5468 | b->input_radix = input_radix; | |
5469 | b->thread = -1; | |
b5de0fa7 | 5470 | b->enable_state = bp_enabled; |
c906108c SS |
5471 | b->next = 0; |
5472 | b->silent = 0; | |
5473 | b->ignore_count = 0; | |
5474 | b->commands = NULL; | |
818dd999 | 5475 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5476 | b->forked_inferior_pid = null_ptid; |
c906108c | 5477 | b->exec_pathname = NULL; |
a96d9b2e | 5478 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5479 | b->ops = NULL; |
0d381245 | 5480 | b->condition_not_parsed = 0; |
c906108c SS |
5481 | |
5482 | /* Add this breakpoint to the end of the chain | |
5483 | so that a list of breakpoints will come out in order | |
5484 | of increasing numbers. */ | |
5485 | ||
5486 | b1 = breakpoint_chain; | |
5487 | if (b1 == 0) | |
5488 | breakpoint_chain = b; | |
5489 | else | |
5490 | { | |
5491 | while (b1->next) | |
5492 | b1 = b1->next; | |
5493 | b1->next = b; | |
5494 | } | |
0d381245 VP |
5495 | return b; |
5496 | } | |
5497 | ||
5498 | /* Initialize loc->function_name. */ | |
5499 | static void | |
5500 | set_breakpoint_location_function (struct bp_location *loc) | |
5501 | { | |
2bdf28a0 JK |
5502 | gdb_assert (loc->owner != NULL); |
5503 | ||
0d381245 | 5504 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5505 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5506 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5507 | { |
5508 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5509 | NULL, NULL); | |
5510 | if (loc->function_name) | |
5511 | loc->function_name = xstrdup (loc->function_name); | |
5512 | } | |
5513 | } | |
5514 | ||
a6d9a66e UW |
5515 | /* Attempt to determine architecture of location identified by SAL. */ |
5516 | static struct gdbarch * | |
5517 | get_sal_arch (struct symtab_and_line sal) | |
5518 | { | |
5519 | if (sal.section) | |
5520 | return get_objfile_arch (sal.section->objfile); | |
5521 | if (sal.symtab) | |
5522 | return get_objfile_arch (sal.symtab->objfile); | |
5523 | ||
5524 | return NULL; | |
5525 | } | |
5526 | ||
0d381245 VP |
5527 | /* set_raw_breakpoint is a low level routine for allocating and |
5528 | partially initializing a breakpoint of type BPTYPE. The newly | |
5529 | created breakpoint's address, section, source file name, and line | |
5530 | number are provided by SAL. The newly created and partially | |
5531 | initialized breakpoint is added to the breakpoint chain and | |
5532 | is also returned as the value of this function. | |
5533 | ||
5534 | It is expected that the caller will complete the initialization of | |
5535 | the newly created breakpoint struct as well as output any status | |
5536 | information regarding the creation of a new breakpoint. In | |
5537 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5538 | number! Care should be taken to not allow an error to occur | |
5539 | prior to completing the initialization of the breakpoint. If this | |
5540 | should happen, a bogus breakpoint will be left on the chain. */ | |
5541 | ||
63c252f8 | 5542 | struct breakpoint * |
a6d9a66e UW |
5543 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5544 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5545 | { |
a6d9a66e | 5546 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5547 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5548 | struct gdbarch *loc_gdbarch; |
5549 | ||
5550 | loc_gdbarch = get_sal_arch (sal); | |
5551 | if (!loc_gdbarch) | |
5552 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5553 | |
6c95b8df PA |
5554 | if (bptype != bp_catchpoint) |
5555 | gdb_assert (sal.pspace != NULL); | |
5556 | ||
0d381245 VP |
5557 | /* Adjust the breakpoint's address prior to allocating a location. |
5558 | Once we call allocate_bp_location(), that mostly uninitialized | |
5559 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5560 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5561 | not want its scan of the location chain to find a breakpoint and |
5562 | location that's only been partially initialized. */ | |
a6d9a66e | 5563 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5564 | |
39d61571 | 5565 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5566 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5567 | b->loc->requested_address = sal.pc; |
5568 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5569 | b->loc->pspace = sal.pspace; |
5570 | ||
5571 | /* Store the program space that was used to set the breakpoint, for | |
5572 | breakpoint resetting. */ | |
5573 | b->pspace = sal.pspace; | |
0d381245 VP |
5574 | |
5575 | if (sal.symtab == NULL) | |
5576 | b->source_file = NULL; | |
5577 | else | |
1b36a34b | 5578 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5579 | b->loc->section = sal.section; |
5580 | b->line_number = sal.line; | |
5581 | ||
5582 | set_breakpoint_location_function (b->loc); | |
c906108c | 5583 | |
c906108c SS |
5584 | breakpoints_changed (); |
5585 | ||
5586 | return b; | |
5587 | } | |
5588 | ||
c2c6d25f JM |
5589 | |
5590 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5591 | instruction, hard-wired into the inferior's code. */ | |
5592 | void | |
5593 | make_breakpoint_permanent (struct breakpoint *b) | |
5594 | { | |
0d381245 | 5595 | struct bp_location *bl; |
cc59ec59 | 5596 | |
b5de0fa7 | 5597 | b->enable_state = bp_permanent; |
c2c6d25f | 5598 | |
0d381245 VP |
5599 | /* By definition, permanent breakpoints are already present in the code. |
5600 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5601 | is called in just one place, so it's hard to say if it's reasonable | |
5602 | to have permanent breakpoint with multiple locations or not, | |
5603 | but it's easy to implmement. */ | |
5604 | for (bl = b->loc; bl; bl = bl->next) | |
5605 | bl->inserted = 1; | |
c2c6d25f JM |
5606 | } |
5607 | ||
53a5351d | 5608 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5609 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5610 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5611 | ||
5612 | void | |
0fd8e87f | 5613 | set_longjmp_breakpoint (int thread) |
c906108c | 5614 | { |
0fd8e87f UW |
5615 | struct breakpoint *b, *temp; |
5616 | ||
5617 | /* To avoid having to rescan all objfile symbols at every step, | |
5618 | we maintain a list of continually-inserted but always disabled | |
5619 | longjmp "master" breakpoints. Here, we simply create momentary | |
5620 | clones of those and enable them for the requested thread. */ | |
5621 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5622 | if (b->pspace == current_program_space |
5623 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5624 | { |
5625 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5626 | |
0fd8e87f UW |
5627 | clone->type = bp_longjmp; |
5628 | clone->thread = thread; | |
5629 | } | |
c906108c SS |
5630 | } |
5631 | ||
611c83ae | 5632 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5633 | void |
611c83ae | 5634 | delete_longjmp_breakpoint (int thread) |
c906108c | 5635 | { |
611c83ae | 5636 | struct breakpoint *b, *temp; |
c906108c | 5637 | |
611c83ae PA |
5638 | ALL_BREAKPOINTS_SAFE (b, temp) |
5639 | if (b->type == bp_longjmp) | |
5640 | { | |
5641 | if (b->thread == thread) | |
5642 | delete_breakpoint (b); | |
5643 | } | |
c906108c SS |
5644 | } |
5645 | ||
1900040c MS |
5646 | void |
5647 | enable_overlay_breakpoints (void) | |
5648 | { | |
52f0bd74 | 5649 | struct breakpoint *b; |
1900040c MS |
5650 | |
5651 | ALL_BREAKPOINTS (b) | |
5652 | if (b->type == bp_overlay_event) | |
5653 | { | |
5654 | b->enable_state = bp_enabled; | |
b60e7edf | 5655 | update_global_location_list (1); |
c02f5703 | 5656 | overlay_events_enabled = 1; |
1900040c MS |
5657 | } |
5658 | } | |
5659 | ||
5660 | void | |
5661 | disable_overlay_breakpoints (void) | |
5662 | { | |
52f0bd74 | 5663 | struct breakpoint *b; |
1900040c MS |
5664 | |
5665 | ALL_BREAKPOINTS (b) | |
5666 | if (b->type == bp_overlay_event) | |
5667 | { | |
5668 | b->enable_state = bp_disabled; | |
b60e7edf | 5669 | update_global_location_list (0); |
c02f5703 | 5670 | overlay_events_enabled = 0; |
1900040c MS |
5671 | } |
5672 | } | |
5673 | ||
aa7d318d TT |
5674 | /* Set an active std::terminate breakpoint for each std::terminate |
5675 | master breakpoint. */ | |
5676 | void | |
5677 | set_std_terminate_breakpoint (void) | |
5678 | { | |
5679 | struct breakpoint *b, *temp; | |
5680 | ||
5681 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5682 | if (b->pspace == current_program_space | |
5683 | && b->type == bp_std_terminate_master) | |
5684 | { | |
5685 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5686 | clone->type = bp_std_terminate; | |
5687 | } | |
5688 | } | |
5689 | ||
5690 | /* Delete all the std::terminate breakpoints. */ | |
5691 | void | |
5692 | delete_std_terminate_breakpoint (void) | |
5693 | { | |
5694 | struct breakpoint *b, *temp; | |
5695 | ||
5696 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5697 | if (b->type == bp_std_terminate) | |
5698 | delete_breakpoint (b); | |
5699 | } | |
5700 | ||
c4093a6a | 5701 | struct breakpoint * |
a6d9a66e | 5702 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5703 | { |
5704 | struct breakpoint *b; | |
c4093a6a | 5705 | |
a6d9a66e | 5706 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5707 | |
b5de0fa7 | 5708 | b->enable_state = bp_enabled; |
c4093a6a | 5709 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5710 | b->addr_string |
5711 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5712 | |
b60e7edf | 5713 | update_global_location_list_nothrow (1); |
74960c60 | 5714 | |
c4093a6a JM |
5715 | return b; |
5716 | } | |
5717 | ||
5718 | void | |
5719 | remove_thread_event_breakpoints (void) | |
5720 | { | |
5721 | struct breakpoint *b, *temp; | |
5722 | ||
5723 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5724 | if (b->type == bp_thread_event |
5725 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5726 | delete_breakpoint (b); |
5727 | } | |
5728 | ||
0101ce28 JJ |
5729 | struct captured_parse_breakpoint_args |
5730 | { | |
5731 | char **arg_p; | |
5732 | struct symtabs_and_lines *sals_p; | |
5733 | char ***addr_string_p; | |
5734 | int *not_found_ptr; | |
5735 | }; | |
5736 | ||
5737 | struct lang_and_radix | |
5738 | { | |
5739 | enum language lang; | |
5740 | int radix; | |
5741 | }; | |
5742 | ||
4efc6507 DE |
5743 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5744 | ||
5745 | struct breakpoint * | |
5746 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5747 | { | |
5748 | struct breakpoint *b; | |
5749 | ||
5750 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5751 | update_global_location_list_nothrow (1); | |
5752 | return b; | |
5753 | } | |
0101ce28 | 5754 | |
cae688ec JJ |
5755 | void |
5756 | remove_solib_event_breakpoints (void) | |
5757 | { | |
5758 | struct breakpoint *b, *temp; | |
5759 | ||
5760 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5761 | if (b->type == bp_shlib_event |
5762 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5763 | delete_breakpoint (b); |
5764 | } | |
5765 | ||
5766 | struct breakpoint * | |
a6d9a66e | 5767 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5768 | { |
5769 | struct breakpoint *b; | |
5770 | ||
a6d9a66e | 5771 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5772 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5773 | return b; |
5774 | } | |
5775 | ||
5776 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5777 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5778 | ||
5779 | void | |
cb851954 | 5780 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5781 | { |
876fa593 | 5782 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5783 | |
876fa593 | 5784 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5785 | { |
2bdf28a0 | 5786 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5787 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 5788 | |
0d381245 VP |
5789 | /* We apply the check to all breakpoints, including disabled |
5790 | for those with loc->duplicate set. This is so that when breakpoint | |
5791 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5792 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5793 | to insert those breakpoints and fail. */ | |
1042e4c0 | 5794 | if (((b->type == bp_breakpoint) |
508ccb1f | 5795 | || (b->type == bp_jit_event) |
1042e4c0 | 5796 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5797 | || (is_tracepoint (b))) |
6c95b8df | 5798 | && loc->pspace == current_program_space |
0d381245 | 5799 | && !loc->shlib_disabled |
a77053c2 | 5800 | #ifdef PC_SOLIB |
0d381245 | 5801 | && PC_SOLIB (loc->address) |
a77053c2 | 5802 | #else |
6c95b8df | 5803 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5804 | #endif |
5805 | ) | |
0d381245 VP |
5806 | { |
5807 | loc->shlib_disabled = 1; | |
5808 | } | |
cae688ec JJ |
5809 | } |
5810 | } | |
5811 | ||
84acb35a JJ |
5812 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5813 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5814 | ||
75149521 | 5815 | static void |
84acb35a JJ |
5816 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5817 | { | |
876fa593 | 5818 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5819 | int disabled_shlib_breaks = 0; |
5820 | ||
c86cf029 VP |
5821 | /* SunOS a.out shared libraries are always mapped, so do not |
5822 | disable breakpoints; they will only be reported as unloaded | |
5823 | through clear_solib when GDB discards its shared library | |
5824 | list. See clear_solib for more information. */ | |
5825 | if (exec_bfd != NULL | |
5826 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5827 | return; | |
5828 | ||
876fa593 | 5829 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5830 | { |
2bdf28a0 | 5831 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5832 | struct breakpoint *b = loc->owner; |
cc59ec59 | 5833 | |
0d381245 VP |
5834 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
5835 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5836 | && solib->pspace == loc->pspace |
e2dd7057 | 5837 | && !loc->shlib_disabled |
508ccb1f TT |
5838 | && (b->type == bp_breakpoint |
5839 | || b->type == bp_jit_event | |
5840 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5841 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5842 | { |
e2dd7057 PP |
5843 | loc->shlib_disabled = 1; |
5844 | /* At this point, we cannot rely on remove_breakpoint | |
5845 | succeeding so we must mark the breakpoint as not inserted | |
5846 | to prevent future errors occurring in remove_breakpoints. */ | |
5847 | loc->inserted = 0; | |
5848 | if (!disabled_shlib_breaks) | |
5849 | { | |
5850 | target_terminal_ours_for_output (); | |
5851 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5852 | solib->so_name); | |
84acb35a | 5853 | } |
e2dd7057 | 5854 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5855 | } |
5856 | } | |
84acb35a JJ |
5857 | } |
5858 | ||
ce78b96d JB |
5859 | /* FORK & VFORK catchpoints. */ |
5860 | ||
5861 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5862 | ||
c906108c | 5863 | static void |
ce78b96d JB |
5864 | insert_catch_fork (struct breakpoint *b) |
5865 | { | |
5866 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5867 | } | |
5868 | ||
5869 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5870 | ||
5871 | static int | |
5872 | remove_catch_fork (struct breakpoint *b) | |
5873 | { | |
5874 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5875 | } | |
5876 | ||
5877 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5878 | catchpoints. */ | |
5879 | ||
5880 | static int | |
5881 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5882 | { | |
5883 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5884 | } | |
5885 | ||
5886 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5887 | ||
5888 | static enum print_stop_action | |
5889 | print_it_catch_fork (struct breakpoint *b) | |
5890 | { | |
5891 | annotate_catchpoint (b->number); | |
5892 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5893 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5894 | return PRINT_SRC_AND_LOC; | |
5895 | } | |
5896 | ||
5897 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5898 | ||
5899 | static void | |
a6d9a66e | 5900 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5901 | { |
79a45b7d TT |
5902 | struct value_print_options opts; |
5903 | ||
5904 | get_user_print_options (&opts); | |
5905 | ||
ce78b96d JB |
5906 | /* Field 4, the address, is omitted (which makes the columns |
5907 | not line up too nicely with the headers, but the effect | |
5908 | is relatively readable). */ | |
79a45b7d | 5909 | if (opts.addressprint) |
ce78b96d JB |
5910 | ui_out_field_skip (uiout, "addr"); |
5911 | annotate_field (5); | |
5912 | ui_out_text (uiout, "fork"); | |
5913 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5914 | { | |
5915 | ui_out_text (uiout, ", process "); | |
5916 | ui_out_field_int (uiout, "what", | |
5917 | ptid_get_pid (b->forked_inferior_pid)); | |
5918 | ui_out_spaces (uiout, 1); | |
5919 | } | |
5920 | } | |
5921 | ||
5922 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5923 | catchpoints. */ | |
5924 | ||
5925 | static void | |
5926 | print_mention_catch_fork (struct breakpoint *b) | |
5927 | { | |
5928 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5929 | } | |
5930 | ||
6149aea9 PA |
5931 | /* Implement the "print_recreate" breakpoint_ops method for fork |
5932 | catchpoints. */ | |
5933 | ||
5934 | static void | |
5935 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
5936 | { | |
5937 | fprintf_unfiltered (fp, "catch fork"); | |
5938 | } | |
5939 | ||
ce78b96d JB |
5940 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
5941 | ||
5942 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5943 | { | |
5944 | insert_catch_fork, | |
5945 | remove_catch_fork, | |
5946 | breakpoint_hit_catch_fork, | |
5947 | print_it_catch_fork, | |
5948 | print_one_catch_fork, | |
6149aea9 PA |
5949 | print_mention_catch_fork, |
5950 | print_recreate_catch_fork | |
ce78b96d JB |
5951 | }; |
5952 | ||
5953 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5954 | ||
5955 | static void | |
5956 | insert_catch_vfork (struct breakpoint *b) | |
5957 | { | |
5958 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5959 | } | |
5960 | ||
5961 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5962 | ||
5963 | static int | |
5964 | remove_catch_vfork (struct breakpoint *b) | |
5965 | { | |
5966 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5967 | } | |
5968 | ||
5969 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5970 | catchpoints. */ | |
5971 | ||
5972 | static int | |
5973 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5974 | { | |
5975 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5976 | } | |
5977 | ||
5978 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5979 | ||
5980 | static enum print_stop_action | |
5981 | print_it_catch_vfork (struct breakpoint *b) | |
5982 | { | |
5983 | annotate_catchpoint (b->number); | |
5984 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5985 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5986 | return PRINT_SRC_AND_LOC; | |
5987 | } | |
5988 | ||
5989 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5990 | ||
5991 | static void | |
a6d9a66e | 5992 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5993 | { |
79a45b7d TT |
5994 | struct value_print_options opts; |
5995 | ||
5996 | get_user_print_options (&opts); | |
ce78b96d JB |
5997 | /* Field 4, the address, is omitted (which makes the columns |
5998 | not line up too nicely with the headers, but the effect | |
5999 | is relatively readable). */ | |
79a45b7d | 6000 | if (opts.addressprint) |
ce78b96d JB |
6001 | ui_out_field_skip (uiout, "addr"); |
6002 | annotate_field (5); | |
6003 | ui_out_text (uiout, "vfork"); | |
6004 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6005 | { | |
6006 | ui_out_text (uiout, ", process "); | |
6007 | ui_out_field_int (uiout, "what", | |
6008 | ptid_get_pid (b->forked_inferior_pid)); | |
6009 | ui_out_spaces (uiout, 1); | |
6010 | } | |
6011 | } | |
6012 | ||
6013 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6014 | catchpoints. */ | |
6015 | ||
6016 | static void | |
6017 | print_mention_catch_vfork (struct breakpoint *b) | |
6018 | { | |
6019 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6020 | } | |
6021 | ||
6149aea9 PA |
6022 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6023 | catchpoints. */ | |
6024 | ||
6025 | static void | |
6026 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6027 | { | |
6028 | fprintf_unfiltered (fp, "catch vfork"); | |
6029 | } | |
6030 | ||
ce78b96d JB |
6031 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6032 | ||
6033 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6034 | { | |
6035 | insert_catch_vfork, | |
6036 | remove_catch_vfork, | |
6037 | breakpoint_hit_catch_vfork, | |
6038 | print_it_catch_vfork, | |
6039 | print_one_catch_vfork, | |
6149aea9 PA |
6040 | print_mention_catch_vfork, |
6041 | print_recreate_catch_vfork | |
ce78b96d JB |
6042 | }; |
6043 | ||
a96d9b2e SDJ |
6044 | /* Implement the "insert" breakpoint_ops method for syscall |
6045 | catchpoints. */ | |
6046 | ||
6047 | static void | |
6048 | insert_catch_syscall (struct breakpoint *b) | |
6049 | { | |
6050 | struct inferior *inf = current_inferior (); | |
6051 | ||
6052 | ++inf->total_syscalls_count; | |
6053 | if (!b->syscalls_to_be_caught) | |
6054 | ++inf->any_syscall_count; | |
6055 | else | |
6056 | { | |
6057 | int i, iter; | |
cc59ec59 | 6058 | |
a96d9b2e SDJ |
6059 | for (i = 0; |
6060 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6061 | i++) | |
6062 | { | |
6063 | int elem; | |
cc59ec59 | 6064 | |
a96d9b2e SDJ |
6065 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6066 | { | |
6067 | int old_size = VEC_length (int, inf->syscalls_counts); | |
6068 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
6069 | uintptr_t vec_addr; | |
6070 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6071 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6072 | vec_addr_offset; | |
6073 | memset ((void *) vec_addr, 0, | |
6074 | (iter + 1 - old_size) * sizeof (int)); | |
6075 | } | |
6076 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6077 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6078 | } | |
6079 | } | |
6080 | ||
6081 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6082 | inf->total_syscalls_count != 0, | |
6083 | inf->any_syscall_count, | |
6084 | VEC_length (int, inf->syscalls_counts), | |
6085 | VEC_address (int, inf->syscalls_counts)); | |
6086 | } | |
6087 | ||
6088 | /* Implement the "remove" breakpoint_ops method for syscall | |
6089 | catchpoints. */ | |
6090 | ||
6091 | static int | |
6092 | remove_catch_syscall (struct breakpoint *b) | |
6093 | { | |
6094 | struct inferior *inf = current_inferior (); | |
6095 | ||
6096 | --inf->total_syscalls_count; | |
6097 | if (!b->syscalls_to_be_caught) | |
6098 | --inf->any_syscall_count; | |
6099 | else | |
6100 | { | |
6101 | int i, iter; | |
cc59ec59 | 6102 | |
a96d9b2e SDJ |
6103 | for (i = 0; |
6104 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6105 | i++) | |
6106 | { | |
6107 | int elem; | |
6108 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6109 | /* Shouldn't happen. */ | |
6110 | continue; | |
6111 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6112 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6113 | } | |
6114 | } | |
6115 | ||
6116 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6117 | inf->total_syscalls_count != 0, | |
6118 | inf->any_syscall_count, | |
6119 | VEC_length (int, inf->syscalls_counts), | |
6120 | VEC_address (int, inf->syscalls_counts)); | |
6121 | } | |
6122 | ||
6123 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6124 | catchpoints. */ | |
6125 | ||
6126 | static int | |
6127 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6128 | { | |
6129 | /* We must check if we are catching specific syscalls in this breakpoint. | |
6130 | If we are, then we must guarantee that the called syscall is the same | |
6131 | syscall we are catching. */ | |
6132 | int syscall_number = 0; | |
6133 | ||
6134 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6135 | return 0; | |
6136 | ||
6137 | /* Now, checking if the syscall is the same. */ | |
6138 | if (b->syscalls_to_be_caught) | |
6139 | { | |
6140 | int i, iter; | |
cc59ec59 | 6141 | |
a96d9b2e SDJ |
6142 | for (i = 0; |
6143 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6144 | i++) | |
6145 | if (syscall_number == iter) | |
6146 | break; | |
6147 | /* Not the same. */ | |
6148 | if (!iter) | |
6149 | return 0; | |
6150 | } | |
6151 | ||
6152 | return 1; | |
6153 | } | |
6154 | ||
6155 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6156 | catchpoints. */ | |
6157 | ||
6158 | static enum print_stop_action | |
6159 | print_it_catch_syscall (struct breakpoint *b) | |
6160 | { | |
6161 | /* These are needed because we want to know in which state a | |
6162 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6163 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6164 | must print "called syscall" or "returned from syscall". */ | |
6165 | ptid_t ptid; | |
6166 | struct target_waitstatus last; | |
6167 | struct syscall s; | |
6168 | struct cleanup *old_chain; | |
6169 | char *syscall_id; | |
6170 | ||
6171 | get_last_target_status (&ptid, &last); | |
6172 | ||
6173 | get_syscall_by_number (last.value.syscall_number, &s); | |
6174 | ||
6175 | annotate_catchpoint (b->number); | |
6176 | ||
6177 | if (s.name == NULL) | |
6178 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6179 | else | |
6180 | syscall_id = xstrprintf ("'%s'", s.name); | |
6181 | ||
6182 | old_chain = make_cleanup (xfree, syscall_id); | |
6183 | ||
6184 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6185 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6186 | b->number, syscall_id); | |
6187 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6188 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6189 | b->number, syscall_id); | |
6190 | ||
6191 | do_cleanups (old_chain); | |
6192 | ||
6193 | return PRINT_SRC_AND_LOC; | |
6194 | } | |
6195 | ||
6196 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6197 | catchpoints. */ | |
6198 | ||
6199 | static void | |
6200 | print_one_catch_syscall (struct breakpoint *b, | |
6201 | struct bp_location **last_loc) | |
6202 | { | |
6203 | struct value_print_options opts; | |
6204 | ||
6205 | get_user_print_options (&opts); | |
6206 | /* Field 4, the address, is omitted (which makes the columns | |
6207 | not line up too nicely with the headers, but the effect | |
6208 | is relatively readable). */ | |
6209 | if (opts.addressprint) | |
6210 | ui_out_field_skip (uiout, "addr"); | |
6211 | annotate_field (5); | |
6212 | ||
6213 | if (b->syscalls_to_be_caught | |
6214 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6215 | ui_out_text (uiout, "syscalls \""); | |
6216 | else | |
6217 | ui_out_text (uiout, "syscall \""); | |
6218 | ||
6219 | if (b->syscalls_to_be_caught) | |
6220 | { | |
6221 | int i, iter; | |
6222 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6223 | |
a96d9b2e SDJ |
6224 | for (i = 0; |
6225 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6226 | i++) | |
6227 | { | |
6228 | char *x = text; | |
6229 | struct syscall s; | |
6230 | get_syscall_by_number (iter, &s); | |
6231 | ||
6232 | if (s.name != NULL) | |
6233 | text = xstrprintf ("%s%s, ", text, s.name); | |
6234 | else | |
6235 | text = xstrprintf ("%s%d, ", text, iter); | |
6236 | ||
6237 | /* We have to xfree the last 'text' (now stored at 'x') | |
6238 | because xstrprintf dinamically allocates new space for it | |
6239 | on every call. */ | |
6240 | xfree (x); | |
6241 | } | |
6242 | /* Remove the last comma. */ | |
6243 | text[strlen (text) - 2] = '\0'; | |
6244 | ui_out_field_string (uiout, "what", text); | |
6245 | } | |
6246 | else | |
6247 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6248 | ui_out_text (uiout, "\" "); | |
6249 | } | |
6250 | ||
6251 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6252 | catchpoints. */ | |
6253 | ||
6254 | static void | |
6255 | print_mention_catch_syscall (struct breakpoint *b) | |
6256 | { | |
6257 | if (b->syscalls_to_be_caught) | |
6258 | { | |
6259 | int i, iter; | |
6260 | ||
6261 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6262 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6263 | else | |
6264 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6265 | ||
6266 | for (i = 0; | |
6267 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6268 | i++) | |
6269 | { | |
6270 | struct syscall s; | |
6271 | get_syscall_by_number (iter, &s); | |
6272 | ||
6273 | if (s.name) | |
6274 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6275 | else | |
6276 | printf_filtered (" %d", s.number); | |
6277 | } | |
6278 | printf_filtered (")"); | |
6279 | } | |
6280 | else | |
6281 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6282 | b->number); | |
6283 | } | |
6284 | ||
6149aea9 PA |
6285 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6286 | catchpoints. */ | |
6287 | ||
6288 | static void | |
6289 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6290 | { | |
6291 | fprintf_unfiltered (fp, "catch syscall"); | |
6292 | ||
6293 | if (b->syscalls_to_be_caught) | |
6294 | { | |
6295 | int i, iter; | |
6296 | ||
6297 | for (i = 0; | |
6298 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6299 | i++) | |
6300 | { | |
6301 | struct syscall s; | |
6302 | ||
6303 | get_syscall_by_number (iter, &s); | |
6304 | if (s.name) | |
6305 | fprintf_unfiltered (fp, " %s", s.name); | |
6306 | else | |
6307 | fprintf_unfiltered (fp, " %d", s.number); | |
6308 | } | |
6309 | } | |
6310 | } | |
6311 | ||
a96d9b2e SDJ |
6312 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6313 | ||
6314 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6315 | { | |
6316 | insert_catch_syscall, | |
6317 | remove_catch_syscall, | |
6318 | breakpoint_hit_catch_syscall, | |
6319 | print_it_catch_syscall, | |
6320 | print_one_catch_syscall, | |
6149aea9 PA |
6321 | print_mention_catch_syscall, |
6322 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6323 | }; |
6324 | ||
6325 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6326 | ||
6327 | static int | |
6328 | syscall_catchpoint_p (struct breakpoint *b) | |
6329 | { | |
6330 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6331 | } | |
6332 | ||
6333 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6334 | but does NOT mention it nor update the global location list. | |
6335 | This is useful if you need to fill more fields in the | |
6336 | struct breakpoint before calling mention. | |
ce78b96d JB |
6337 | |
6338 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6339 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6340 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6341 | to the catchpoint. */ | |
6342 | ||
6343 | static struct breakpoint * | |
a96d9b2e SDJ |
6344 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6345 | char *cond_string, | |
6346 | struct breakpoint_ops *ops) | |
c906108c | 6347 | { |
c5aa993b JM |
6348 | struct symtab_and_line sal; |
6349 | struct breakpoint *b; | |
c5aa993b | 6350 | |
fe39c653 | 6351 | init_sal (&sal); |
6c95b8df | 6352 | sal.pspace = current_program_space; |
c5aa993b | 6353 | |
a6d9a66e | 6354 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6355 | set_breakpoint_count (breakpoint_count + 1); |
6356 | b->number = breakpoint_count; | |
ce78b96d | 6357 | |
1b36a34b | 6358 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6359 | b->thread = -1; |
c906108c | 6360 | b->addr_string = NULL; |
b5de0fa7 EZ |
6361 | b->enable_state = bp_enabled; |
6362 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6363 | b->ops = ops; |
c5aa993b | 6364 | |
a96d9b2e SDJ |
6365 | return b; |
6366 | } | |
6367 | ||
6368 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6369 | ||
6370 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6371 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6372 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6373 | to the catchpoint. */ | |
6374 | ||
6375 | static struct breakpoint * | |
6376 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6377 | char *cond_string, struct breakpoint_ops *ops) | |
6378 | { | |
6379 | struct breakpoint *b = | |
6380 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6381 | ||
c906108c | 6382 | mention (b); |
ce78b96d | 6383 | update_global_location_list (1); |
c906108c | 6384 | |
ce78b96d | 6385 | return b; |
c906108c | 6386 | } |
c5aa993b | 6387 | |
9b70b993 | 6388 | static void |
a6d9a66e UW |
6389 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6390 | int tempflag, char *cond_string, | |
ce78b96d | 6391 | struct breakpoint_ops *ops) |
c906108c | 6392 | { |
a6d9a66e UW |
6393 | struct breakpoint *b |
6394 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6395 | |
6396 | /* FIXME: We should put this information in a breakpoint private data | |
6397 | area. */ | |
6398 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6399 | } |
6400 | ||
fe798b75 JB |
6401 | /* Exec catchpoints. */ |
6402 | ||
9b70b993 | 6403 | static void |
fe798b75 | 6404 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6405 | { |
fe798b75 JB |
6406 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6407 | } | |
c906108c | 6408 | |
fe798b75 JB |
6409 | static int |
6410 | remove_catch_exec (struct breakpoint *b) | |
6411 | { | |
6412 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6413 | } | |
c906108c | 6414 | |
fe798b75 JB |
6415 | static int |
6416 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6417 | { | |
6418 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6419 | } | |
c906108c | 6420 | |
fe798b75 JB |
6421 | static enum print_stop_action |
6422 | print_it_catch_exec (struct breakpoint *b) | |
6423 | { | |
6424 | annotate_catchpoint (b->number); | |
6425 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6426 | b->exec_pathname); | |
6427 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6428 | } |
6429 | ||
fe798b75 | 6430 | static void |
a6d9a66e | 6431 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6432 | { |
6433 | struct value_print_options opts; | |
6434 | ||
6435 | get_user_print_options (&opts); | |
6436 | ||
6437 | /* Field 4, the address, is omitted (which makes the columns | |
6438 | not line up too nicely with the headers, but the effect | |
6439 | is relatively readable). */ | |
6440 | if (opts.addressprint) | |
6441 | ui_out_field_skip (uiout, "addr"); | |
6442 | annotate_field (5); | |
6443 | ui_out_text (uiout, "exec"); | |
6444 | if (b->exec_pathname != NULL) | |
6445 | { | |
6446 | ui_out_text (uiout, ", program \""); | |
6447 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6448 | ui_out_text (uiout, "\" "); | |
6449 | } | |
6450 | } | |
6451 | ||
6452 | static void | |
6453 | print_mention_catch_exec (struct breakpoint *b) | |
6454 | { | |
6455 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6456 | } | |
6457 | ||
6149aea9 PA |
6458 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6459 | catchpoints. */ | |
6460 | ||
6461 | static void | |
6462 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6463 | { | |
6464 | fprintf_unfiltered (fp, "catch exec"); | |
6465 | } | |
6466 | ||
fe798b75 JB |
6467 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6468 | { | |
6469 | insert_catch_exec, | |
6470 | remove_catch_exec, | |
6471 | breakpoint_hit_catch_exec, | |
6472 | print_it_catch_exec, | |
6473 | print_one_catch_exec, | |
6149aea9 PA |
6474 | print_mention_catch_exec, |
6475 | print_recreate_catch_exec | |
fe798b75 JB |
6476 | }; |
6477 | ||
a96d9b2e SDJ |
6478 | static void |
6479 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6480 | struct breakpoint_ops *ops) | |
6481 | { | |
6482 | struct gdbarch *gdbarch = get_current_arch (); | |
6483 | struct breakpoint *b = | |
6484 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6485 | ||
6486 | b->syscalls_to_be_caught = filter; | |
6487 | ||
6488 | /* Now, we have to mention the breakpoint and update the global | |
6489 | location list. */ | |
6490 | mention (b); | |
6491 | update_global_location_list (1); | |
6492 | } | |
6493 | ||
c906108c | 6494 | static int |
fba45db2 | 6495 | hw_breakpoint_used_count (void) |
c906108c | 6496 | { |
52f0bd74 | 6497 | struct breakpoint *b; |
c906108c SS |
6498 | int i = 0; |
6499 | ||
6500 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6501 | { |
d6b74ac4 | 6502 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6503 | i++; |
6504 | } | |
c906108c SS |
6505 | |
6506 | return i; | |
6507 | } | |
6508 | ||
6509 | static int | |
fba45db2 | 6510 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6511 | { |
52f0bd74 | 6512 | struct breakpoint *b; |
c906108c SS |
6513 | int i = 0; |
6514 | ||
6515 | *other_type_used = 0; | |
6516 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6517 | { |
468d015d | 6518 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6519 | { |
6520 | if (b->type == type) | |
6521 | i++; | |
cc60f2e3 | 6522 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6523 | *other_type_used = 1; |
6524 | } | |
6525 | } | |
c906108c SS |
6526 | return i; |
6527 | } | |
6528 | ||
c906108c | 6529 | void |
fba45db2 | 6530 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6531 | { |
c5aa993b | 6532 | struct breakpoint *b; |
c906108c SS |
6533 | |
6534 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6535 | { |
cc60f2e3 | 6536 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6537 | { |
b5de0fa7 | 6538 | b->enable_state = bp_call_disabled; |
b60e7edf | 6539 | update_global_location_list (0); |
c5aa993b JM |
6540 | } |
6541 | } | |
c906108c SS |
6542 | } |
6543 | ||
6544 | void | |
fba45db2 | 6545 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6546 | { |
c5aa993b | 6547 | struct breakpoint *b; |
c906108c SS |
6548 | |
6549 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6550 | { |
cc60f2e3 | 6551 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6552 | { |
b5de0fa7 | 6553 | b->enable_state = bp_enabled; |
b60e7edf | 6554 | update_global_location_list (1); |
c5aa993b JM |
6555 | } |
6556 | } | |
c906108c SS |
6557 | } |
6558 | ||
8bea4e01 UW |
6559 | void |
6560 | disable_breakpoints_before_startup (void) | |
6561 | { | |
6562 | struct breakpoint *b; | |
6563 | int found = 0; | |
6564 | ||
6565 | ALL_BREAKPOINTS (b) | |
6566 | { | |
6c95b8df PA |
6567 | if (b->pspace != current_program_space) |
6568 | continue; | |
6569 | ||
8bea4e01 UW |
6570 | if ((b->type == bp_breakpoint |
6571 | || b->type == bp_hardware_breakpoint) | |
6572 | && breakpoint_enabled (b)) | |
6573 | { | |
6574 | b->enable_state = bp_startup_disabled; | |
6575 | found = 1; | |
6576 | } | |
6577 | } | |
6578 | ||
6579 | if (found) | |
6580 | update_global_location_list (0); | |
6581 | ||
6c95b8df | 6582 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6583 | } |
6584 | ||
6585 | void | |
6586 | enable_breakpoints_after_startup (void) | |
6587 | { | |
6588 | struct breakpoint *b; | |
6589 | int found = 0; | |
6590 | ||
6c95b8df | 6591 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6592 | |
6593 | ALL_BREAKPOINTS (b) | |
6594 | { | |
6c95b8df PA |
6595 | if (b->pspace != current_program_space) |
6596 | continue; | |
6597 | ||
8bea4e01 UW |
6598 | if ((b->type == bp_breakpoint |
6599 | || b->type == bp_hardware_breakpoint) | |
6600 | && b->enable_state == bp_startup_disabled) | |
6601 | { | |
6602 | b->enable_state = bp_enabled; | |
6603 | found = 1; | |
6604 | } | |
6605 | } | |
6606 | ||
6607 | if (found) | |
6608 | breakpoint_re_set (); | |
6609 | } | |
6610 | ||
c906108c SS |
6611 | |
6612 | /* Set a breakpoint that will evaporate an end of command | |
6613 | at address specified by SAL. | |
6614 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6615 | ||
6616 | struct breakpoint * | |
a6d9a66e UW |
6617 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6618 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6619 | { |
52f0bd74 | 6620 | struct breakpoint *b; |
edb3359d DJ |
6621 | |
6622 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6623 | one. */ | |
6624 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6625 | ||
a6d9a66e | 6626 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6627 | b->enable_state = bp_enabled; |
6628 | b->disposition = disp_donttouch; | |
818dd999 | 6629 | b->frame_id = frame_id; |
c906108c SS |
6630 | |
6631 | /* If we're debugging a multi-threaded program, then we | |
6632 | want momentary breakpoints to be active in only a | |
6633 | single thread of control. */ | |
39f77062 KB |
6634 | if (in_thread_list (inferior_ptid)) |
6635 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6636 | |
b60e7edf | 6637 | update_global_location_list_nothrow (1); |
74960c60 | 6638 | |
c906108c SS |
6639 | return b; |
6640 | } | |
611c83ae | 6641 | |
e58b0e63 PA |
6642 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6643 | ORIG is NULL. */ | |
6644 | ||
6645 | struct breakpoint * | |
6646 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6647 | { | |
6648 | struct breakpoint *copy; | |
6649 | ||
6650 | /* If there's nothing to clone, then return nothing. */ | |
6651 | if (orig == NULL) | |
6652 | return NULL; | |
6653 | ||
a6d9a66e | 6654 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6655 | copy->loc = allocate_bp_location (copy); |
6656 | set_breakpoint_location_function (copy->loc); | |
6657 | ||
a6d9a66e | 6658 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6659 | copy->loc->requested_address = orig->loc->requested_address; |
6660 | copy->loc->address = orig->loc->address; | |
6661 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6662 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6663 | |
6664 | if (orig->source_file == NULL) | |
6665 | copy->source_file = NULL; | |
6666 | else | |
6667 | copy->source_file = xstrdup (orig->source_file); | |
6668 | ||
6669 | copy->line_number = orig->line_number; | |
6670 | copy->frame_id = orig->frame_id; | |
6671 | copy->thread = orig->thread; | |
6c95b8df | 6672 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6673 | |
6674 | copy->enable_state = bp_enabled; | |
6675 | copy->disposition = disp_donttouch; | |
6676 | copy->number = internal_breakpoint_number--; | |
6677 | ||
6678 | update_global_location_list_nothrow (0); | |
6679 | return copy; | |
6680 | } | |
6681 | ||
611c83ae | 6682 | struct breakpoint * |
a6d9a66e UW |
6683 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6684 | enum bptype type) | |
611c83ae PA |
6685 | { |
6686 | struct symtab_and_line sal; | |
6687 | ||
6688 | sal = find_pc_line (pc, 0); | |
6689 | sal.pc = pc; | |
6690 | sal.section = find_pc_overlay (pc); | |
6691 | sal.explicit_pc = 1; | |
6692 | ||
a6d9a66e | 6693 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6694 | } |
c906108c | 6695 | \f |
c5aa993b | 6696 | |
c906108c SS |
6697 | /* Tell the user we have just set a breakpoint B. */ |
6698 | ||
6699 | static void | |
fba45db2 | 6700 | mention (struct breakpoint *b) |
c906108c SS |
6701 | { |
6702 | int say_where = 0; | |
fa8a61dc | 6703 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6704 | struct value_print_options opts; |
6705 | ||
6706 | get_user_print_options (&opts); | |
8b93c638 | 6707 | |
9a4105ab AC |
6708 | /* FIXME: This is misplaced; mention() is called by things (like |
6709 | hitting a watchpoint) other than breakpoint creation. It should | |
6710 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6711 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6712 | observer_notify_breakpoint_created (b->number); |
c906108c | 6713 | |
3086aeae DJ |
6714 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6715 | b->ops->print_mention (b); | |
6716 | else | |
6717 | switch (b->type) | |
6718 | { | |
6719 | case bp_none: | |
a3f17187 | 6720 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6721 | break; |
6722 | case bp_watchpoint: | |
6723 | ui_out_text (uiout, "Watchpoint "); | |
6724 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6725 | ui_out_field_int (uiout, "number", b->number); | |
6726 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6727 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6728 | do_cleanups (ui_out_chain); |
6729 | break; | |
6730 | case bp_hardware_watchpoint: | |
6731 | ui_out_text (uiout, "Hardware watchpoint "); | |
6732 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6733 | ui_out_field_int (uiout, "number", b->number); | |
6734 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6735 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6736 | do_cleanups (ui_out_chain); |
6737 | break; | |
6738 | case bp_read_watchpoint: | |
6739 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6740 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6741 | ui_out_field_int (uiout, "number", b->number); | |
6742 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6743 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6744 | do_cleanups (ui_out_chain); |
6745 | break; | |
6746 | case bp_access_watchpoint: | |
6747 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6748 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6749 | ui_out_field_int (uiout, "number", b->number); | |
6750 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6751 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6752 | do_cleanups (ui_out_chain); |
6753 | break; | |
6754 | case bp_breakpoint: | |
6755 | if (ui_out_is_mi_like_p (uiout)) | |
6756 | { | |
6757 | say_where = 0; | |
6758 | break; | |
6759 | } | |
2cec12e5 AR |
6760 | if (b->disposition == disp_del) |
6761 | printf_filtered (_("Temporary breakpoint")); | |
6762 | else | |
6763 | printf_filtered (_("Breakpoint")); | |
6764 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6765 | say_where = 1; |
6766 | break; | |
6767 | case bp_hardware_breakpoint: | |
6768 | if (ui_out_is_mi_like_p (uiout)) | |
6769 | { | |
6770 | say_where = 0; | |
6771 | break; | |
6772 | } | |
a3f17187 | 6773 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6774 | say_where = 1; |
6775 | break; | |
1042e4c0 SS |
6776 | case bp_tracepoint: |
6777 | if (ui_out_is_mi_like_p (uiout)) | |
6778 | { | |
6779 | say_where = 0; | |
6780 | break; | |
6781 | } | |
6782 | printf_filtered (_("Tracepoint")); | |
6783 | printf_filtered (_(" %d"), b->number); | |
6784 | say_where = 1; | |
6785 | break; | |
7a697b8d SS |
6786 | case bp_fast_tracepoint: |
6787 | if (ui_out_is_mi_like_p (uiout)) | |
6788 | { | |
6789 | say_where = 0; | |
6790 | break; | |
6791 | } | |
6792 | printf_filtered (_("Fast tracepoint")); | |
6793 | printf_filtered (_(" %d"), b->number); | |
6794 | say_where = 1; | |
6795 | break; | |
3086aeae DJ |
6796 | |
6797 | case bp_until: | |
6798 | case bp_finish: | |
6799 | case bp_longjmp: | |
6800 | case bp_longjmp_resume: | |
6801 | case bp_step_resume: | |
3086aeae | 6802 | case bp_call_dummy: |
aa7d318d | 6803 | case bp_std_terminate: |
3086aeae DJ |
6804 | case bp_watchpoint_scope: |
6805 | case bp_shlib_event: | |
6806 | case bp_thread_event: | |
6807 | case bp_overlay_event: | |
4efc6507 | 6808 | case bp_jit_event: |
0fd8e87f | 6809 | case bp_longjmp_master: |
aa7d318d | 6810 | case bp_std_terminate_master: |
3086aeae DJ |
6811 | break; |
6812 | } | |
c906108c | 6813 | |
c906108c SS |
6814 | if (say_where) |
6815 | { | |
a3f17187 AC |
6816 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6817 | single string. */ | |
0d381245 | 6818 | if (b->loc == NULL) |
c906108c | 6819 | { |
a3f17187 | 6820 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6821 | } |
6822 | else | |
6823 | { | |
79a45b7d | 6824 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6825 | { |
6826 | printf_filtered (" at "); | |
5af949e3 UW |
6827 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6828 | gdb_stdout); | |
0101ce28 JJ |
6829 | } |
6830 | if (b->source_file) | |
6831 | printf_filtered (": file %s, line %d.", | |
6832 | b->source_file, b->line_number); | |
0d381245 VP |
6833 | |
6834 | if (b->loc->next) | |
6835 | { | |
6836 | struct bp_location *loc = b->loc; | |
6837 | int n = 0; | |
6838 | for (; loc; loc = loc->next) | |
6839 | ++n; | |
6840 | printf_filtered (" (%d locations)", n); | |
6841 | } | |
6842 | ||
c906108c | 6843 | } |
c906108c | 6844 | } |
9dc5e2a9 | 6845 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6846 | return; |
c906108c SS |
6847 | printf_filtered ("\n"); |
6848 | } | |
c906108c | 6849 | \f |
c5aa993b | 6850 | |
0d381245 | 6851 | static struct bp_location * |
39d61571 | 6852 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6853 | const struct symtab_and_line *sal) |
6854 | { | |
6855 | struct bp_location *loc, **tmp; | |
6856 | ||
39d61571 | 6857 | loc = allocate_bp_location (b); |
0d381245 VP |
6858 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6859 | ; | |
6860 | *tmp = loc; | |
a6d9a66e UW |
6861 | loc->gdbarch = get_sal_arch (*sal); |
6862 | if (!loc->gdbarch) | |
6863 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6864 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6865 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6866 | loc->requested_address, b->type); | |
6c95b8df PA |
6867 | loc->pspace = sal->pspace; |
6868 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6869 | loc->section = sal->section; |
6870 | ||
6871 | set_breakpoint_location_function (loc); | |
6872 | return loc; | |
6873 | } | |
514f746b AR |
6874 | \f |
6875 | ||
6876 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6877 | return 0 otherwise. */ | |
6878 | ||
6879 | static int | |
6880 | bp_loc_is_permanent (struct bp_location *loc) | |
6881 | { | |
6882 | int len; | |
6883 | CORE_ADDR addr; | |
6884 | const gdb_byte *brk; | |
6885 | gdb_byte *target_mem; | |
939c61fa JK |
6886 | struct cleanup *cleanup; |
6887 | int retval = 0; | |
514f746b AR |
6888 | |
6889 | gdb_assert (loc != NULL); | |
6890 | ||
6891 | addr = loc->address; | |
a6d9a66e | 6892 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6893 | |
939c61fa JK |
6894 | /* Software breakpoints unsupported? */ |
6895 | if (brk == NULL) | |
6896 | return 0; | |
6897 | ||
514f746b AR |
6898 | target_mem = alloca (len); |
6899 | ||
939c61fa JK |
6900 | /* Enable the automatic memory restoration from breakpoints while |
6901 | we read the memory. Otherwise we could say about our temporary | |
6902 | breakpoints they are permanent. */ | |
6c95b8df PA |
6903 | cleanup = save_current_space_and_thread (); |
6904 | ||
6905 | switch_to_program_space_and_thread (loc->pspace); | |
6906 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6907 | |
514f746b AR |
6908 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6909 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6910 | retval = 1; |
514f746b | 6911 | |
939c61fa JK |
6912 | do_cleanups (cleanup); |
6913 | ||
6914 | return retval; | |
514f746b AR |
6915 | } |
6916 | ||
6917 | ||
c3f6f71d | 6918 | |
018d34a4 VP |
6919 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6920 | as textual description of the location, and COND_STRING | |
db107f19 | 6921 | as condition expression. */ |
018d34a4 VP |
6922 | |
6923 | static void | |
8cdf0e15 VP |
6924 | create_breakpoint_sal (struct gdbarch *gdbarch, |
6925 | struct symtabs_and_lines sals, char *addr_string, | |
6926 | char *cond_string, | |
6927 | enum bptype type, enum bpdisp disposition, | |
6928 | int thread, int task, int ignore_count, | |
6929 | struct breakpoint_ops *ops, int from_tty, int enabled) | |
018d34a4 | 6930 | { |
0d381245 VP |
6931 | struct breakpoint *b = NULL; |
6932 | int i; | |
018d34a4 VP |
6933 | |
6934 | if (type == bp_hardware_breakpoint) | |
6935 | { | |
6936 | int i = hw_breakpoint_used_count (); | |
6937 | int target_resources_ok = | |
d92524f1 | 6938 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6939 | i + 1, 0); |
6940 | if (target_resources_ok == 0) | |
6941 | error (_("No hardware breakpoint support in the target.")); | |
6942 | else if (target_resources_ok < 0) | |
6943 | error (_("Hardware breakpoints used exceeds limit.")); | |
6944 | } | |
6945 | ||
6c95b8df PA |
6946 | gdb_assert (sals.nelts > 0); |
6947 | ||
0d381245 VP |
6948 | for (i = 0; i < sals.nelts; ++i) |
6949 | { | |
6950 | struct symtab_and_line sal = sals.sals[i]; | |
6951 | struct bp_location *loc; | |
6952 | ||
6953 | if (from_tty) | |
5af949e3 UW |
6954 | { |
6955 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6956 | if (!loc_gdbarch) | |
6957 | loc_gdbarch = gdbarch; | |
6958 | ||
6959 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6960 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6961 | } |
0d381245 VP |
6962 | |
6963 | if (i == 0) | |
6964 | { | |
a6d9a66e | 6965 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6966 | set_breakpoint_count (breakpoint_count + 1); |
6967 | b->number = breakpoint_count; | |
6968 | b->thread = thread; | |
4a306c9a | 6969 | b->task = task; |
018d34a4 | 6970 | |
0d381245 VP |
6971 | b->cond_string = cond_string; |
6972 | b->ignore_count = ignore_count; | |
41447f92 | 6973 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6974 | b->disposition = disposition; |
018d34a4 | 6975 | |
6c95b8df PA |
6976 | b->pspace = sals.sals[0].pspace; |
6977 | ||
6978 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6979 | && (b->type == bp_breakpoint |
6980 | || b->type == bp_hardware_breakpoint)) | |
6981 | b->enable_state = bp_startup_disabled; | |
6982 | ||
0d381245 VP |
6983 | loc = b->loc; |
6984 | } | |
6985 | else | |
018d34a4 | 6986 | { |
39d61571 | 6987 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6988 | } |
6989 | ||
514f746b AR |
6990 | if (bp_loc_is_permanent (loc)) |
6991 | make_breakpoint_permanent (b); | |
6992 | ||
0d381245 VP |
6993 | if (b->cond_string) |
6994 | { | |
6995 | char *arg = b->cond_string; | |
d32a6982 | 6996 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6997 | if (*arg) |
db107f19 | 6998 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6999 | } |
0d381245 | 7000 | } |
018d34a4 VP |
7001 | |
7002 | if (addr_string) | |
7003 | b->addr_string = addr_string; | |
7004 | else | |
7005 | /* addr_string has to be used or breakpoint_re_set will delete | |
7006 | me. */ | |
5af949e3 UW |
7007 | b->addr_string |
7008 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7009 | |
604133b5 | 7010 | b->ops = ops; |
018d34a4 VP |
7011 | mention (b); |
7012 | } | |
7013 | ||
ed0616c6 VP |
7014 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7015 | elements to fill the void space. */ | |
2c0b251b PA |
7016 | static void |
7017 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7018 | { |
7019 | int i = index_to_remove+1; | |
7020 | int last_index = sal->nelts-1; | |
7021 | ||
7022 | for (;i <= last_index; ++i) | |
7023 | sal->sals[i-1] = sal->sals[i]; | |
7024 | ||
7025 | --(sal->nelts); | |
7026 | } | |
7027 | ||
6c95b8df PA |
7028 | /* If appropriate, obtains all sals that correspond to the same file |
7029 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7030 | will want to set a breakpoint at foo.c:line, and not really care | |
7031 | about program spaces. This is done only if SAL does not have | |
7032 | explicit PC and has line and file information. If we got just a | |
7033 | single expanded sal, return the original. | |
ed0616c6 | 7034 | |
6c95b8df PA |
7035 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7036 | which the name of enclosing function is different from SAL. This | |
7037 | makes sure that if we have breakpoint originally set in template | |
7038 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7039 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7040 | |
2c0b251b | 7041 | static struct symtabs_and_lines |
ed0616c6 VP |
7042 | expand_line_sal_maybe (struct symtab_and_line sal) |
7043 | { | |
7044 | struct symtabs_and_lines expanded; | |
7045 | CORE_ADDR original_pc = sal.pc; | |
7046 | char *original_function = NULL; | |
7047 | int found; | |
7048 | int i; | |
6c95b8df | 7049 | struct cleanup *old_chain; |
ed0616c6 VP |
7050 | |
7051 | /* If we have explicit pc, don't expand. | |
7052 | If we have no line number, we can't expand. */ | |
7053 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7054 | { | |
7055 | expanded.nelts = 1; | |
7056 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7057 | expanded.sals[0] = sal; | |
7058 | return expanded; | |
7059 | } | |
7060 | ||
7061 | sal.pc = 0; | |
6c95b8df PA |
7062 | |
7063 | old_chain = save_current_space_and_thread (); | |
7064 | ||
7065 | switch_to_program_space_and_thread (sal.pspace); | |
7066 | ||
ed0616c6 | 7067 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7068 | |
7069 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7070 | expanded = expand_line_sal (sal); |
6c95b8df | 7071 | |
ed0616c6 VP |
7072 | if (expanded.nelts == 1) |
7073 | { | |
3dba1c98 JB |
7074 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7075 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7076 | xfree (expanded.sals); |
7077 | expanded.nelts = 1; | |
7078 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7079 | sal.pc = original_pc; | |
7080 | expanded.sals[0] = sal; | |
3dba1c98 | 7081 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7082 | do_cleanups (old_chain); |
ed0616c6 VP |
7083 | return expanded; |
7084 | } | |
7085 | ||
7086 | if (!sal.explicit_line) | |
7087 | { | |
7088 | CORE_ADDR func_addr, func_end; | |
7089 | for (i = 0; i < expanded.nelts; ++i) | |
7090 | { | |
7091 | CORE_ADDR pc = expanded.sals[i].pc; | |
7092 | char *this_function; | |
6c95b8df PA |
7093 | |
7094 | /* We need to switch threads as well since we're about to | |
7095 | read memory. */ | |
7096 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7097 | ||
ed0616c6 VP |
7098 | if (find_pc_partial_function (pc, &this_function, |
7099 | &func_addr, &func_end)) | |
7100 | { | |
059fb39f PM |
7101 | if (this_function |
7102 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7103 | { |
7104 | remove_sal (&expanded, i); | |
7105 | --i; | |
7106 | } | |
ed0616c6 VP |
7107 | } |
7108 | } | |
7109 | } | |
059acae7 UW |
7110 | |
7111 | /* Skip the function prologue if necessary. */ | |
7112 | for (i = 0; i < expanded.nelts; ++i) | |
7113 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7114 | |
6c95b8df PA |
7115 | do_cleanups (old_chain); |
7116 | ||
ed0616c6 VP |
7117 | if (expanded.nelts <= 1) |
7118 | { | |
7119 | /* This is un ugly workaround. If we get zero | |
7120 | expanded sals then something is really wrong. | |
7121 | Fix that by returnign the original sal. */ | |
7122 | xfree (expanded.sals); | |
7123 | expanded.nelts = 1; | |
7124 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7125 | sal.pc = original_pc; | |
7126 | expanded.sals[0] = sal; | |
7127 | return expanded; | |
7128 | } | |
7129 | ||
7130 | if (original_pc) | |
7131 | { | |
7132 | found = 0; | |
7133 | for (i = 0; i < expanded.nelts; ++i) | |
7134 | if (expanded.sals[i].pc == original_pc) | |
7135 | { | |
7136 | found = 1; | |
7137 | break; | |
7138 | } | |
7139 | gdb_assert (found); | |
7140 | } | |
7141 | ||
7142 | return expanded; | |
7143 | } | |
7144 | ||
018d34a4 VP |
7145 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7146 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7147 | value. COND_STRING, if not NULL, specified the condition to be | |
7148 | used for all breakpoints. Essentially the only case where | |
7149 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7150 | function. In that case, it's still not possible to specify | |
7151 | separate conditions for different overloaded functions, so | |
7152 | we take just a single condition string. | |
7153 | ||
c3f6f71d | 7154 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7155 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7156 | array contents). If the function fails (error() is called), the |
7157 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
7158 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
7159 | |
7160 | static void | |
8cdf0e15 VP |
7161 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7162 | struct symtabs_and_lines sals, char **addr_string, | |
7163 | char *cond_string, | |
7164 | enum bptype type, enum bpdisp disposition, | |
7165 | int thread, int task, int ignore_count, | |
7166 | struct breakpoint_ops *ops, int from_tty, | |
7167 | int enabled) | |
c906108c | 7168 | { |
018d34a4 | 7169 | int i; |
cc59ec59 | 7170 | |
018d34a4 | 7171 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7172 | { |
ed0616c6 VP |
7173 | struct symtabs_and_lines expanded = |
7174 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7175 | |
8cdf0e15 VP |
7176 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7177 | cond_string, type, disposition, | |
7178 | thread, task, ignore_count, ops, from_tty, enabled); | |
c3f6f71d | 7179 | } |
c3f6f71d | 7180 | } |
c906108c | 7181 | |
c3f6f71d JM |
7182 | /* Parse ARG which is assumed to be a SAL specification possibly |
7183 | followed by conditionals. On return, SALS contains an array of SAL | |
7184 | addresses found. ADDR_STRING contains a vector of (canonical) | |
7185 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7186 | |
b9362cc7 | 7187 | static void |
c3f6f71d JM |
7188 | parse_breakpoint_sals (char **address, |
7189 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7190 | char ***addr_string, |
7191 | int *not_found_ptr) | |
c3f6f71d JM |
7192 | { |
7193 | char *addr_start = *address; | |
cc59ec59 | 7194 | |
c3f6f71d JM |
7195 | *addr_string = NULL; |
7196 | /* If no arg given, or if first arg is 'if ', use the default | |
7197 | breakpoint. */ | |
7198 | if ((*address) == NULL | |
7199 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7200 | { |
7201 | if (default_breakpoint_valid) | |
7202 | { | |
c3f6f71d | 7203 | struct symtab_and_line sal; |
cc59ec59 | 7204 | |
fe39c653 | 7205 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 7206 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7207 | xmalloc (sizeof (struct symtab_and_line)); |
7208 | sal.pc = default_breakpoint_address; | |
7209 | sal.line = default_breakpoint_line; | |
7210 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7211 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7212 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
7213 | |
7214 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
7215 | the default_breakpoint_address. So make sure to set | |
7216 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
7217 | sals to include all other instances with the same symtab and line. | |
7218 | */ | |
7219 | sal.explicit_pc = 1; | |
7220 | ||
c3f6f71d JM |
7221 | sals->sals[0] = sal; |
7222 | sals->nelts = 1; | |
c906108c SS |
7223 | } |
7224 | else | |
8a3fe4f8 | 7225 | error (_("No default breakpoint address now.")); |
c906108c SS |
7226 | } |
7227 | else | |
7228 | { | |
c906108c | 7229 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
7230 | current_source_symtab (which is decode_line_1's default). This |
7231 | should produce the results we want almost all of the time while | |
1aeae86e AF |
7232 | leaving default_breakpoint_* alone. |
7233 | ObjC: However, don't match an Objective-C method name which | |
7234 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7235 | |
c214a6fd | 7236 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7237 | |
c906108c | 7238 | if (default_breakpoint_valid |
0378c332 | 7239 | && (!cursal.symtab |
1aeae86e AF |
7240 | || ((strchr ("+-", (*address)[0]) != NULL) |
7241 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7242 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7243 | default_breakpoint_line, addr_string, |
7244 | not_found_ptr); | |
c906108c | 7245 | else |
0101ce28 JJ |
7246 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7247 | addr_string, not_found_ptr); | |
c906108c | 7248 | } |
c3f6f71d JM |
7249 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7250 | if (sals->nelts > 0 && *addr_string == NULL) | |
7251 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7252 | if (addr_start != (*address)) | |
c906108c | 7253 | { |
c3f6f71d | 7254 | int i; |
cc59ec59 | 7255 | |
c3f6f71d | 7256 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7257 | { |
c3f6f71d JM |
7258 | /* Add the string if not present. */ |
7259 | if ((*addr_string)[i] == NULL) | |
cc59ec59 MS |
7260 | (*addr_string)[i] = savestring (addr_start, |
7261 | (*address) - addr_start); | |
c906108c SS |
7262 | } |
7263 | } | |
c3f6f71d | 7264 | } |
c906108c | 7265 | |
c906108c | 7266 | |
c3f6f71d JM |
7267 | /* Convert each SAL into a real PC. Verify that the PC can be |
7268 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 7269 | |
b9362cc7 | 7270 | static void |
c3f6f71d JM |
7271 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
7272 | char *address) | |
7273 | { | |
7274 | int i; | |
cc59ec59 | 7275 | |
c3f6f71d | 7276 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7277 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7278 | } |
7279 | ||
7a697b8d SS |
7280 | /* Fast tracepoints may have restrictions on valid locations. For |
7281 | instance, a fast tracepoint using a jump instead of a trap will | |
7282 | likely have to overwrite more bytes than a trap would, and so can | |
7283 | only be placed where the instruction is longer than the jump, or a | |
7284 | multi-instruction sequence does not have a jump into the middle of | |
7285 | it, etc. */ | |
7286 | ||
7287 | static void | |
7288 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7289 | struct symtabs_and_lines *sals) | |
7290 | { | |
7291 | int i, rslt; | |
7292 | struct symtab_and_line *sal; | |
7293 | char *msg; | |
7294 | struct cleanup *old_chain; | |
7295 | ||
7296 | for (i = 0; i < sals->nelts; i++) | |
7297 | { | |
7298 | sal = &sals->sals[i]; | |
7299 | ||
7300 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7301 | NULL, &msg); | |
7302 | old_chain = make_cleanup (xfree, msg); | |
7303 | ||
7304 | if (!rslt) | |
7305 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7306 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7307 | ||
7308 | do_cleanups (old_chain); | |
7309 | } | |
7310 | } | |
7311 | ||
05ff989b | 7312 | static void |
0101ce28 JJ |
7313 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7314 | { | |
7315 | struct captured_parse_breakpoint_args *args = data; | |
7316 | ||
7317 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7318 | args->not_found_ptr); | |
0101ce28 JJ |
7319 | } |
7320 | ||
018d34a4 VP |
7321 | /* Given TOK, a string specification of condition and thread, as |
7322 | accepted by the 'break' command, extract the condition | |
7323 | string and thread number and set *COND_STRING and *THREAD. | |
7324 | PC identifies the context at which the condition should be parsed. | |
7325 | If no condition is found, *COND_STRING is set to NULL. | |
7326 | If no thread is found, *THREAD is set to -1. */ | |
7327 | static void | |
7328 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7329 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7330 | { |
7331 | *cond_string = NULL; | |
7332 | *thread = -1; | |
7333 | while (tok && *tok) | |
7334 | { | |
7335 | char *end_tok; | |
7336 | int toklen; | |
7337 | char *cond_start = NULL; | |
7338 | char *cond_end = NULL; | |
cc59ec59 | 7339 | |
018d34a4 VP |
7340 | while (*tok == ' ' || *tok == '\t') |
7341 | tok++; | |
7342 | ||
7343 | end_tok = tok; | |
7344 | ||
7345 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7346 | end_tok++; | |
7347 | ||
7348 | toklen = end_tok - tok; | |
7349 | ||
7350 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7351 | { | |
f7545552 TT |
7352 | struct expression *expr; |
7353 | ||
018d34a4 | 7354 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7355 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7356 | xfree (expr); | |
018d34a4 VP |
7357 | cond_end = tok; |
7358 | *cond_string = savestring (cond_start, | |
7359 | cond_end - cond_start); | |
7360 | } | |
7361 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7362 | { | |
7363 | char *tmptok; | |
7364 | ||
7365 | tok = end_tok + 1; | |
7366 | tmptok = tok; | |
7367 | *thread = strtol (tok, &tok, 0); | |
7368 | if (tok == tmptok) | |
7369 | error (_("Junk after thread keyword.")); | |
7370 | if (!valid_thread_id (*thread)) | |
7371 | error (_("Unknown thread %d."), *thread); | |
7372 | } | |
4a306c9a JB |
7373 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7374 | { | |
7375 | char *tmptok; | |
7376 | ||
7377 | tok = end_tok + 1; | |
7378 | tmptok = tok; | |
7379 | *task = strtol (tok, &tok, 0); | |
7380 | if (tok == tmptok) | |
7381 | error (_("Junk after task keyword.")); | |
7382 | if (!valid_task_id (*task)) | |
b6199126 | 7383 | error (_("Unknown task %d."), *task); |
4a306c9a | 7384 | } |
018d34a4 VP |
7385 | else |
7386 | error (_("Junk at end of arguments.")); | |
7387 | } | |
7388 | } | |
7389 | ||
fd9b8c24 PA |
7390 | /* Set a breakpoint. This function is shared between CLI and MI |
7391 | functions for setting a breakpoint. This function has two major | |
7392 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7393 | parameter. If non-zero, the function will parse arg, extracting | |
7394 | breakpoint location, address and thread. Otherwise, ARG is just the | |
7395 | location of breakpoint, with condition and thread specified by the | |
7396 | COND_STRING and THREAD parameters. Returns true if any breakpoint | |
7397 | was created; false otherwise. */ | |
0101ce28 | 7398 | |
8cdf0e15 VP |
7399 | int |
7400 | create_breakpoint (struct gdbarch *gdbarch, | |
7401 | char *arg, char *cond_string, int thread, | |
7402 | int parse_condition_and_thread, | |
7403 | int tempflag, int hardwareflag, int traceflag, | |
7404 | int ignore_count, | |
7405 | enum auto_boolean pending_break_support, | |
7406 | struct breakpoint_ops *ops, | |
7407 | int from_tty, | |
7408 | int enabled) | |
c3f6f71d | 7409 | { |
71fff37b | 7410 | struct gdb_exception e; |
c3f6f71d | 7411 | struct symtabs_and_lines sals; |
0101ce28 | 7412 | struct symtab_and_line pending_sal; |
0101ce28 | 7413 | char *copy_arg; |
c3f6f71d JM |
7414 | char *addr_start = arg; |
7415 | char **addr_string; | |
7416 | struct cleanup *old_chain; | |
80c99de1 | 7417 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7418 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7419 | int i; |
0101ce28 | 7420 | int pending = 0; |
0101ce28 | 7421 | int not_found = 0; |
1042e4c0 | 7422 | enum bptype type_wanted; |
4a306c9a | 7423 | int task = 0; |
86b17b60 | 7424 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7425 | |
c3f6f71d JM |
7426 | sals.sals = NULL; |
7427 | sals.nelts = 0; | |
7428 | addr_string = NULL; | |
c3f6f71d | 7429 | |
0101ce28 JJ |
7430 | parse_args.arg_p = &arg; |
7431 | parse_args.sals_p = &sals; | |
7432 | parse_args.addr_string_p = &addr_string; | |
7433 | parse_args.not_found_ptr = ¬_found; | |
7434 | ||
05ff989b AC |
7435 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7436 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7437 | |
7438 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7439 | switch (e.reason) |
0101ce28 | 7440 | { |
05ff989b | 7441 | case RETURN_QUIT: |
98deb0da | 7442 | throw_exception (e); |
05ff989b AC |
7443 | case RETURN_ERROR: |
7444 | switch (e.error) | |
0101ce28 | 7445 | { |
05ff989b | 7446 | case NOT_FOUND_ERROR: |
0101ce28 | 7447 | |
05ff989b AC |
7448 | /* If pending breakpoint support is turned off, throw |
7449 | error. */ | |
fa8d40ab JJ |
7450 | |
7451 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7452 | throw_exception (e); |
7453 | ||
7454 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7455 | |
05ff989b AC |
7456 | /* If pending breakpoint support is auto query and the user |
7457 | selects no, then simply return the error code. */ | |
059fb39f PM |
7458 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
7459 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
fd9b8c24 | 7460 | return 0; |
fa8d40ab | 7461 | |
05ff989b AC |
7462 | /* At this point, either the user was queried about setting |
7463 | a pending breakpoint and selected yes, or pending | |
7464 | breakpoint behavior is on and thus a pending breakpoint | |
7465 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7466 | copy_arg = xstrdup (addr_start); |
7467 | addr_string = ©_arg; | |
7468 | sals.nelts = 1; | |
7469 | sals.sals = &pending_sal; | |
7470 | pending_sal.pc = 0; | |
7471 | pending = 1; | |
05ff989b AC |
7472 | break; |
7473 | default: | |
98deb0da | 7474 | throw_exception (e); |
0101ce28 | 7475 | } |
05ff989b AC |
7476 | default: |
7477 | if (!sals.nelts) | |
fd9b8c24 | 7478 | return 0; |
0101ce28 | 7479 | } |
c3f6f71d JM |
7480 | |
7481 | /* Create a chain of things that always need to be cleaned up. */ | |
7482 | old_chain = make_cleanup (null_cleanup, 0); | |
7483 | ||
0101ce28 JJ |
7484 | if (!pending) |
7485 | { | |
7486 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7487 | make_cleanup (xfree, sals.sals); | |
7488 | ||
7489 | /* Cleanup the addr_string array but not its contents. */ | |
7490 | make_cleanup (xfree, addr_string); | |
7491 | } | |
c3f6f71d | 7492 | |
c3f6f71d JM |
7493 | /* ----------------------------- SNIP ----------------------------- |
7494 | Anything added to the cleanup chain beyond this point is assumed | |
7495 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7496 | then the memory is not reclaimed. */ |
7497 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7498 | |
7499 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7500 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7501 | for (i = 0; i < sals.nelts; i++) |
7502 | { | |
7503 | if (addr_string[i] != NULL) | |
b8c9b27d | 7504 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7505 | } |
7506 | ||
7507 | /* Resolve all line numbers to PC's and verify that the addresses | |
7508 | are ok for the target. */ | |
0101ce28 JJ |
7509 | if (!pending) |
7510 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 7511 | |
1042e4c0 | 7512 | type_wanted = (traceflag |
7a697b8d | 7513 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
7514 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
7515 | ||
7a697b8d SS |
7516 | /* Fast tracepoints may have additional restrictions on location. */ |
7517 | if (type_wanted == bp_fast_tracepoint) | |
7518 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7519 | ||
c3f6f71d JM |
7520 | /* Verify that condition can be parsed, before setting any |
7521 | breakpoints. Allocate a separate condition expression for each | |
7522 | breakpoint. */ | |
0101ce28 | 7523 | if (!pending) |
c3f6f71d | 7524 | { |
2f069f6f | 7525 | if (parse_condition_and_thread) |
72b2ff0e VP |
7526 | { |
7527 | /* Here we only parse 'arg' to separate condition | |
7528 | from thread number, so parsing in context of first | |
7529 | sal is OK. When setting the breakpoint we'll | |
7530 | re-parse it in context of each sal. */ | |
7531 | cond_string = NULL; | |
7532 | thread = -1; | |
4a306c9a JB |
7533 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7534 | &thread, &task); | |
72b2ff0e VP |
7535 | if (cond_string) |
7536 | make_cleanup (xfree, cond_string); | |
7537 | } | |
2f069f6f | 7538 | else |
72b2ff0e VP |
7539 | { |
7540 | /* Create a private copy of condition string. */ | |
7541 | if (cond_string) | |
7542 | { | |
7543 | cond_string = xstrdup (cond_string); | |
7544 | make_cleanup (xfree, cond_string); | |
7545 | } | |
7546 | } | |
8cdf0e15 VP |
7547 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, |
7548 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7549 | thread, task, ignore_count, ops, from_tty, | |
7550 | enabled); | |
c906108c | 7551 | } |
0101ce28 JJ |
7552 | else |
7553 | { | |
0101ce28 JJ |
7554 | struct breakpoint *b; |
7555 | ||
0101ce28 JJ |
7556 | make_cleanup (xfree, copy_arg); |
7557 | ||
a6d9a66e | 7558 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
7559 | set_breakpoint_count (breakpoint_count + 1); |
7560 | b->number = breakpoint_count; | |
72b2ff0e | 7561 | b->thread = -1; |
018d34a4 | 7562 | b->addr_string = addr_string[0]; |
72b2ff0e | 7563 | b->cond_string = NULL; |
0101ce28 | 7564 | b->ignore_count = ignore_count; |
0101ce28 | 7565 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7566 | b->condition_not_parsed = 1; |
604133b5 | 7567 | b->ops = ops; |
41447f92 | 7568 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7569 | b->pspace = current_program_space; |
74960c60 | 7570 | |
6c95b8df | 7571 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7572 | && (b->type == bp_breakpoint |
7573 | || b->type == bp_hardware_breakpoint)) | |
7574 | b->enable_state = bp_startup_disabled; | |
7575 | ||
0101ce28 JJ |
7576 | mention (b); |
7577 | } | |
7578 | ||
c3f6f71d | 7579 | if (sals.nelts > 1) |
95a42b64 TT |
7580 | { |
7581 | warning (_("Multiple breakpoints were set.\n" | |
7582 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7583 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7584 | } |
7585 | ||
80c99de1 PA |
7586 | /* That's it. Discard the cleanups for data inserted into the |
7587 | breakpoint. */ | |
7588 | discard_cleanups (bkpt_chain); | |
7589 | /* But cleanup everything else. */ | |
c3f6f71d | 7590 | do_cleanups (old_chain); |
217dc9e2 | 7591 | |
80c99de1 | 7592 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7593 | update_global_location_list (1); |
fd9b8c24 PA |
7594 | |
7595 | return 1; | |
c3f6f71d | 7596 | } |
c906108c | 7597 | |
72b2ff0e VP |
7598 | /* Set a breakpoint. |
7599 | ARG is a string describing breakpoint address, | |
7600 | condition, and thread. | |
7601 | FLAG specifies if a breakpoint is hardware on, | |
7602 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7603 | and BP_TEMPFLAG. */ | |
7604 | ||
98deb0da | 7605 | static void |
72b2ff0e | 7606 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7607 | { |
72b2ff0e VP |
7608 | int hardwareflag = flag & BP_HARDWAREFLAG; |
7609 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 7610 | |
8cdf0e15 VP |
7611 | create_breakpoint (get_current_arch (), |
7612 | arg, | |
7613 | NULL, 0, 1 /* parse arg */, | |
7614 | tempflag, hardwareflag, 0 /* traceflag */, | |
7615 | 0 /* Ignore count */, | |
7616 | pending_break_support, | |
7617 | NULL /* breakpoint_ops */, | |
7618 | from_tty, | |
7619 | 1 /* enabled */); | |
c906108c SS |
7620 | } |
7621 | ||
72b2ff0e | 7622 | |
c906108c SS |
7623 | /* Helper function for break_command_1 and disassemble_command. */ |
7624 | ||
7625 | void | |
fba45db2 | 7626 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7627 | { |
7628 | CORE_ADDR pc; | |
7629 | ||
7630 | if (sal->pc == 0 && sal->symtab != NULL) | |
7631 | { | |
7632 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7633 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7634 | sal->line, sal->symtab->filename); |
7635 | sal->pc = pc; | |
6a048695 JB |
7636 | |
7637 | /* If this SAL corresponds to a breakpoint inserted using | |
7638 | a line number, then skip the function prologue if necessary. */ | |
7639 | if (sal->explicit_line) | |
059acae7 | 7640 | skip_prologue_sal (sal); |
c906108c SS |
7641 | } |
7642 | ||
7643 | if (sal->section == 0 && sal->symtab != NULL) | |
7644 | { | |
7645 | struct blockvector *bv; | |
c5aa993b JM |
7646 | struct block *b; |
7647 | struct symbol *sym; | |
c906108c | 7648 | |
801e3a5b | 7649 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7650 | if (bv != NULL) |
7651 | { | |
7f0df278 | 7652 | sym = block_linkage_function (b); |
c906108c SS |
7653 | if (sym != NULL) |
7654 | { | |
7655 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7656 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7657 | } |
7658 | else | |
7659 | { | |
7660 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7661 | have to look harder. This case can be executed if we have |
7662 | line numbers but no functions (as can happen in assembly | |
7663 | source). */ | |
c906108c | 7664 | |
c5aa993b | 7665 | struct minimal_symbol *msym; |
6c95b8df PA |
7666 | struct cleanup *old_chain = save_current_space_and_thread (); |
7667 | ||
7668 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7669 | |
7670 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7671 | if (msym) | |
714835d5 | 7672 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7673 | |
7674 | do_cleanups (old_chain); | |
c906108c SS |
7675 | } |
7676 | } | |
7677 | } | |
7678 | } | |
7679 | ||
7680 | void | |
fba45db2 | 7681 | break_command (char *arg, int from_tty) |
c906108c | 7682 | { |
db107f19 | 7683 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7684 | } |
7685 | ||
c906108c | 7686 | void |
fba45db2 | 7687 | tbreak_command (char *arg, int from_tty) |
c906108c | 7688 | { |
db107f19 | 7689 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7690 | } |
7691 | ||
c906108c | 7692 | static void |
fba45db2 | 7693 | hbreak_command (char *arg, int from_tty) |
c906108c | 7694 | { |
db107f19 | 7695 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7696 | } |
7697 | ||
7698 | static void | |
fba45db2 | 7699 | thbreak_command (char *arg, int from_tty) |
c906108c | 7700 | { |
db107f19 | 7701 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7702 | } |
7703 | ||
7704 | static void | |
fba45db2 | 7705 | stop_command (char *arg, int from_tty) |
c906108c | 7706 | { |
a3f17187 | 7707 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7708 | Usage: stop in <function | address>\n\ |
a3f17187 | 7709 | stop at <line>\n")); |
c906108c SS |
7710 | } |
7711 | ||
7712 | static void | |
fba45db2 | 7713 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7714 | { |
7715 | int badInput = 0; | |
7716 | ||
c5aa993b | 7717 | if (arg == (char *) NULL) |
c906108c SS |
7718 | badInput = 1; |
7719 | else if (*arg != '*') | |
7720 | { | |
7721 | char *argptr = arg; | |
7722 | int hasColon = 0; | |
7723 | ||
53a5351d JM |
7724 | /* look for a ':'. If this is a line number specification, then |
7725 | say it is bad, otherwise, it should be an address or | |
7726 | function/method name */ | |
c906108c | 7727 | while (*argptr && !hasColon) |
c5aa993b JM |
7728 | { |
7729 | hasColon = (*argptr == ':'); | |
7730 | argptr++; | |
7731 | } | |
c906108c SS |
7732 | |
7733 | if (hasColon) | |
c5aa993b | 7734 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7735 | else |
c5aa993b | 7736 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7737 | } |
7738 | ||
7739 | if (badInput) | |
a3f17187 | 7740 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7741 | else |
db107f19 | 7742 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7743 | } |
7744 | ||
7745 | static void | |
fba45db2 | 7746 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7747 | { |
7748 | int badInput = 0; | |
7749 | ||
c5aa993b | 7750 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7751 | badInput = 1; |
7752 | else | |
7753 | { | |
7754 | char *argptr = arg; | |
7755 | int hasColon = 0; | |
7756 | ||
7757 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7758 | it is probably a line number. */ |
c906108c | 7759 | while (*argptr && !hasColon) |
c5aa993b JM |
7760 | { |
7761 | hasColon = (*argptr == ':'); | |
7762 | argptr++; | |
7763 | } | |
c906108c SS |
7764 | |
7765 | if (hasColon) | |
c5aa993b | 7766 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7767 | else |
c5aa993b | 7768 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7769 | } |
7770 | ||
7771 | if (badInput) | |
a3f17187 | 7772 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7773 | else |
db107f19 | 7774 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7775 | } |
7776 | ||
65d79d4b SDJ |
7777 | /* Return non-zero if EXP is verified as constant. Returned zero means EXP is |
7778 | variable. Also the constant detection may fail for some constant | |
7779 | expressions and in such case still falsely return zero. */ | |
7780 | static int | |
7781 | watchpoint_exp_is_const (const struct expression *exp) | |
7782 | { | |
7783 | int i = exp->nelts; | |
7784 | ||
7785 | while (i > 0) | |
7786 | { | |
7787 | int oplenp, argsp; | |
7788 | ||
7789 | /* We are only interested in the descriptor of each element. */ | |
7790 | operator_length (exp, i, &oplenp, &argsp); | |
7791 | i -= oplenp; | |
7792 | ||
7793 | switch (exp->elts[i].opcode) | |
7794 | { | |
7795 | case BINOP_ADD: | |
7796 | case BINOP_SUB: | |
7797 | case BINOP_MUL: | |
7798 | case BINOP_DIV: | |
7799 | case BINOP_REM: | |
7800 | case BINOP_MOD: | |
7801 | case BINOP_LSH: | |
7802 | case BINOP_RSH: | |
7803 | case BINOP_LOGICAL_AND: | |
7804 | case BINOP_LOGICAL_OR: | |
7805 | case BINOP_BITWISE_AND: | |
7806 | case BINOP_BITWISE_IOR: | |
7807 | case BINOP_BITWISE_XOR: | |
7808 | case BINOP_EQUAL: | |
7809 | case BINOP_NOTEQUAL: | |
7810 | case BINOP_LESS: | |
7811 | case BINOP_GTR: | |
7812 | case BINOP_LEQ: | |
7813 | case BINOP_GEQ: | |
7814 | case BINOP_REPEAT: | |
7815 | case BINOP_COMMA: | |
7816 | case BINOP_EXP: | |
7817 | case BINOP_MIN: | |
7818 | case BINOP_MAX: | |
7819 | case BINOP_INTDIV: | |
7820 | case BINOP_CONCAT: | |
7821 | case BINOP_IN: | |
7822 | case BINOP_RANGE: | |
7823 | case TERNOP_COND: | |
7824 | case TERNOP_SLICE: | |
7825 | case TERNOP_SLICE_COUNT: | |
7826 | ||
7827 | case OP_LONG: | |
7828 | case OP_DOUBLE: | |
7829 | case OP_DECFLOAT: | |
7830 | case OP_LAST: | |
7831 | case OP_COMPLEX: | |
7832 | case OP_STRING: | |
7833 | case OP_BITSTRING: | |
7834 | case OP_ARRAY: | |
7835 | case OP_TYPE: | |
7836 | case OP_NAME: | |
7837 | case OP_OBJC_NSSTRING: | |
7838 | ||
7839 | case UNOP_NEG: | |
7840 | case UNOP_LOGICAL_NOT: | |
7841 | case UNOP_COMPLEMENT: | |
7842 | case UNOP_ADDR: | |
7843 | case UNOP_HIGH: | |
7844 | /* Unary, binary and ternary operators: We have to check their | |
7845 | operands. If they are constant, then so is the result of | |
7846 | that operation. For instance, if A and B are determined to be | |
7847 | constants, then so is "A + B". | |
7848 | ||
7849 | UNOP_IND is one exception to the rule above, because the value | |
7850 | of *ADDR is not necessarily a constant, even when ADDR is. */ | |
7851 | break; | |
7852 | ||
7853 | case OP_VAR_VALUE: | |
7854 | /* Check whether the associated symbol is a constant. | |
7855 | We use SYMBOL_CLASS rather than TYPE_CONST because it's | |
7856 | possible that a buggy compiler could mark a variable as constant | |
7857 | even when it is not, and TYPE_CONST would return true in this | |
7858 | case, while SYMBOL_CLASS wouldn't. | |
7859 | We also have to check for function symbols because they are | |
7860 | always constant. */ | |
7861 | { | |
7862 | struct symbol *s = exp->elts[i + 2].symbol; | |
7863 | ||
7864 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
7865 | && SYMBOL_CLASS (s) != LOC_CONST | |
7866 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
7867 | return 0; | |
7868 | break; | |
7869 | } | |
7870 | ||
7871 | /* The default action is to return 0 because we are using | |
7872 | the optimistic approach here: If we don't know something, | |
7873 | then it is not a constant. */ | |
7874 | default: | |
7875 | return 0; | |
7876 | } | |
7877 | } | |
7878 | ||
7879 | return 1; | |
7880 | } | |
7881 | ||
53a5351d JM |
7882 | /* accessflag: hw_write: watch write, |
7883 | hw_read: watch read, | |
7884 | hw_access: watch access (read or write) */ | |
c906108c | 7885 | static void |
fba45db2 | 7886 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7887 | { |
d983da9c | 7888 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 7889 | struct expression *exp; |
60e1c644 | 7890 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
c906108c SS |
7891 | struct value *val, *mark; |
7892 | struct frame_info *frame; | |
c906108c SS |
7893 | char *exp_start = NULL; |
7894 | char *exp_end = NULL; | |
37e4754d | 7895 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7896 | int toklen; |
7897 | char *cond_start = NULL; | |
7898 | char *cond_end = NULL; | |
c906108c SS |
7899 | int i, other_type_used, target_resources_ok = 0; |
7900 | enum bptype bp_type; | |
7901 | int mem_cnt = 0; | |
37e4754d | 7902 | int thread = -1; |
c906108c | 7903 | |
37e4754d LM |
7904 | /* Make sure that we actually have parameters to parse. */ |
7905 | if (arg != NULL && arg[0] != '\0') | |
7906 | { | |
7907 | toklen = strlen (arg); /* Size of argument list. */ | |
7908 | ||
7909 | /* Points tok to the end of the argument list. */ | |
7910 | tok = arg + toklen - 1; | |
7911 | ||
7912 | /* Go backwards in the parameters list. Skip the last parameter. | |
7913 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7914 | be the thread identifier. */ | |
7915 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7916 | tok--; | |
7917 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7918 | tok--; | |
7919 | ||
7920 | /* Points end_tok to the beginning of the last token. */ | |
7921 | id_tok_start = tok + 1; | |
7922 | ||
7923 | /* Go backwards in the parameters list. Skip one more parameter. | |
7924 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7925 | reach a "thread" token. */ | |
7926 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7927 | tok--; | |
7928 | ||
7929 | end_tok = tok; | |
7930 | ||
7931 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7932 | tok--; | |
7933 | ||
7934 | /* Move the pointer forward to skip the whitespace and | |
7935 | calculate the length of the token. */ | |
7936 | tok++; | |
7937 | toklen = end_tok - tok; | |
7938 | ||
7939 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7940 | { | |
7941 | /* At this point we've found a "thread" token, which means | |
7942 | the user is trying to set a watchpoint that triggers | |
7943 | only in a specific thread. */ | |
7944 | char *endp; | |
7945 | ||
7946 | /* Extract the thread ID from the next token. */ | |
7947 | thread = strtol (id_tok_start, &endp, 0); | |
7948 | ||
7949 | /* Check if the user provided a valid numeric value for the | |
7950 | thread ID. */ | |
7951 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7952 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7953 | ||
7954 | /* Check if the thread actually exists. */ | |
7955 | if (!valid_thread_id (thread)) | |
7956 | error (_("Unknown thread %d."), thread); | |
7957 | ||
7958 | /* Truncate the string and get rid of the thread <thread_num> | |
7959 | parameter before the parameter list is parsed by the | |
7960 | evaluate_expression() function. */ | |
7961 | *tok = '\0'; | |
7962 | } | |
7963 | } | |
7964 | ||
7965 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7966 | innermost_block = NULL; |
7967 | exp_start = arg; | |
7968 | exp = parse_exp_1 (&arg, 0, 0); | |
7969 | exp_end = arg; | |
fa8a61dc TT |
7970 | /* Remove trailing whitespace from the expression before saving it. |
7971 | This makes the eventual display of the expression string a bit | |
7972 | prettier. */ | |
7973 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7974 | --exp_end; | |
7975 | ||
65d79d4b SDJ |
7976 | /* Checking if the expression is not constant. */ |
7977 | if (watchpoint_exp_is_const (exp)) | |
7978 | { | |
7979 | int len; | |
7980 | ||
7981 | len = exp_end - exp_start; | |
7982 | while (len > 0 && isspace (exp_start[len - 1])) | |
7983 | len--; | |
7984 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
7985 | } | |
7986 | ||
c906108c SS |
7987 | exp_valid_block = innermost_block; |
7988 | mark = value_mark (); | |
fa4727a6 DJ |
7989 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7990 | if (val != NULL) | |
7991 | release_value (val); | |
c906108c SS |
7992 | |
7993 | tok = arg; | |
7994 | while (*tok == ' ' || *tok == '\t') | |
7995 | tok++; | |
7996 | end_tok = tok; | |
7997 | ||
7998 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7999 | end_tok++; | |
8000 | ||
8001 | toklen = end_tok - tok; | |
8002 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8003 | { | |
2d134ed3 PA |
8004 | struct expression *cond; |
8005 | ||
60e1c644 | 8006 | innermost_block = NULL; |
c906108c SS |
8007 | tok = cond_start = end_tok + 1; |
8008 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8009 | |
8010 | /* The watchpoint expression may not be local, but the condition | |
8011 | may still be. E.g.: `watch global if local > 0'. */ | |
8012 | cond_exp_valid_block = innermost_block; | |
8013 | ||
2d134ed3 | 8014 | xfree (cond); |
c906108c SS |
8015 | cond_end = tok; |
8016 | } | |
8017 | if (*tok) | |
8a3fe4f8 | 8018 | error (_("Junk at end of command.")); |
c906108c | 8019 | |
53a5351d | 8020 | if (accessflag == hw_read) |
c5aa993b | 8021 | bp_type = bp_read_watchpoint; |
53a5351d | 8022 | else if (accessflag == hw_access) |
c5aa993b JM |
8023 | bp_type = bp_access_watchpoint; |
8024 | else | |
8025 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
8026 | |
8027 | mem_cnt = can_use_hardware_watchpoint (val); | |
8028 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8029 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
8030 | if (mem_cnt != 0) |
8031 | { | |
8032 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8033 | target_resources_ok = |
d92524f1 | 8034 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 8035 | other_type_used); |
c5aa993b | 8036 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8037 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8038 | |
c5aa993b | 8039 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8040 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 8041 | } |
c906108c | 8042 | |
4d28f7a8 KB |
8043 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
8044 | watchpoint could not be set. */ | |
8045 | if (!mem_cnt || target_resources_ok <= 0) | |
8046 | bp_type = bp_watchpoint; | |
8047 | ||
d983da9c | 8048 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8049 | |
8050 | /* If the expression is "local", then set up a "watchpoint scope" | |
8051 | breakpoint at the point where we've left the scope of the watchpoint | |
8052 | expression. Create the scope breakpoint before the watchpoint, so | |
8053 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8054 | if (exp_valid_block && frame) |
d983da9c | 8055 | { |
edb3359d DJ |
8056 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8057 | { | |
8058 | scope_breakpoint | |
a6d9a66e UW |
8059 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8060 | frame_unwind_caller_pc (frame), | |
edb3359d | 8061 | bp_watchpoint_scope); |
d983da9c | 8062 | |
edb3359d | 8063 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8064 | |
edb3359d DJ |
8065 | /* Automatically delete the breakpoint when it hits. */ |
8066 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8067 | |
edb3359d DJ |
8068 | /* Only break in the proper frame (help with recursion). */ |
8069 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8070 | |
edb3359d | 8071 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8072 | scope_breakpoint->loc->gdbarch |
8073 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8074 | scope_breakpoint->loc->requested_address |
8075 | = frame_unwind_caller_pc (frame); | |
8076 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8077 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8078 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8079 | scope_breakpoint->type); |
8080 | } | |
d983da9c DJ |
8081 | } |
8082 | ||
c906108c | 8083 | /* Now set up the breakpoint. */ |
2d134ed3 | 8084 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
8085 | set_breakpoint_count (breakpoint_count + 1); |
8086 | b->number = breakpoint_count; | |
37e4754d | 8087 | b->thread = thread; |
b5de0fa7 | 8088 | b->disposition = disp_donttouch; |
c906108c SS |
8089 | b->exp = exp; |
8090 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8091 | b->cond_exp_valid_block = cond_exp_valid_block; |
c906108c SS |
8092 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
8093 | b->val = val; | |
fa4727a6 | 8094 | b->val_valid = 1; |
c906108c SS |
8095 | if (cond_start) |
8096 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8097 | else | |
8098 | b->cond_string = 0; | |
c5aa993b | 8099 | |
c906108c | 8100 | if (frame) |
f6bc2008 PA |
8101 | { |
8102 | b->watchpoint_frame = get_frame_id (frame); | |
8103 | b->watchpoint_thread = inferior_ptid; | |
8104 | } | |
c906108c | 8105 | else |
f6bc2008 PA |
8106 | { |
8107 | b->watchpoint_frame = null_frame_id; | |
8108 | b->watchpoint_thread = null_ptid; | |
8109 | } | |
c906108c | 8110 | |
d983da9c | 8111 | if (scope_breakpoint != NULL) |
c906108c | 8112 | { |
d983da9c DJ |
8113 | /* The scope breakpoint is related to the watchpoint. We will |
8114 | need to act on them together. */ | |
8115 | b->related_breakpoint = scope_breakpoint; | |
8116 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8117 | } |
d983da9c | 8118 | |
c906108c | 8119 | value_free_to_mark (mark); |
2d134ed3 PA |
8120 | |
8121 | /* Finally update the new watchpoint. This creates the locations | |
8122 | that should be inserted. */ | |
8123 | update_watchpoint (b, 1); | |
8124 | ||
c906108c | 8125 | mention (b); |
b60e7edf | 8126 | update_global_location_list (1); |
c906108c SS |
8127 | } |
8128 | ||
8129 | /* Return count of locations need to be watched and can be handled | |
8130 | in hardware. If the watchpoint can not be handled | |
8131 | in hardware return zero. */ | |
8132 | ||
c906108c | 8133 | static int |
fba45db2 | 8134 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
8135 | { |
8136 | int found_memory_cnt = 0; | |
2e70b7b9 | 8137 | struct value *head = v; |
c906108c SS |
8138 | |
8139 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8140 | if (!can_use_hw_watchpoints) |
c906108c | 8141 | return 0; |
c5aa993b | 8142 | |
5c44784c JM |
8143 | /* Make sure that the value of the expression depends only upon |
8144 | memory contents, and values computed from them within GDB. If we | |
8145 | find any register references or function calls, we can't use a | |
8146 | hardware watchpoint. | |
8147 | ||
8148 | The idea here is that evaluating an expression generates a series | |
8149 | of values, one holding the value of every subexpression. (The | |
8150 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8151 | a*b+c.) GDB's values hold almost enough information to establish | |
8152 | the criteria given above --- they identify memory lvalues, | |
8153 | register lvalues, computed values, etcetera. So we can evaluate | |
8154 | the expression, and then scan the chain of values that leaves | |
8155 | behind to decide whether we can detect any possible change to the | |
8156 | expression's final value using only hardware watchpoints. | |
8157 | ||
8158 | However, I don't think that the values returned by inferior | |
8159 | function calls are special in any way. So this function may not | |
8160 | notice that an expression involving an inferior function call | |
8161 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8162 | for (; v; v = value_next (v)) |
c906108c | 8163 | { |
5c44784c | 8164 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8165 | { |
d69fe07e | 8166 | if (value_lazy (v)) |
5c44784c JM |
8167 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
8168 | we either just used its address (e.g., `a' in `a.b') or | |
8169 | we never needed it at all (e.g., `a' in `a,b'). */ | |
8170 | ; | |
53a5351d | 8171 | else |
5c44784c JM |
8172 | { |
8173 | /* Ahh, memory we actually used! Check if we can cover | |
8174 | it with hardware watchpoints. */ | |
df407dfe | 8175 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8176 | |
8177 | /* We only watch structs and arrays if user asked for it | |
8178 | explicitly, never if they just happen to appear in a | |
8179 | middle of some value chain. */ | |
8180 | if (v == head | |
8181 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8182 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8183 | { | |
42ae5230 | 8184 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 8185 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 8186 | |
d92524f1 | 8187 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
8188 | return 0; |
8189 | else | |
8190 | found_memory_cnt++; | |
8191 | } | |
5c44784c | 8192 | } |
c5aa993b | 8193 | } |
5086187c AC |
8194 | else if (VALUE_LVAL (v) != not_lval |
8195 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 8196 | return 0; /* ??? What does this represent? */ |
5086187c | 8197 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 8198 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
8199 | } |
8200 | ||
8201 | /* The expression itself looks suitable for using a hardware | |
8202 | watchpoint, but give the target machine a chance to reject it. */ | |
8203 | return found_memory_cnt; | |
8204 | } | |
8205 | ||
8b93c638 | 8206 | void |
fba45db2 | 8207 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8208 | { |
8209 | watch_command (arg, from_tty); | |
8210 | } | |
8926118c | 8211 | |
c5aa993b | 8212 | static void |
fba45db2 | 8213 | watch_command (char *arg, int from_tty) |
c906108c | 8214 | { |
53a5351d | 8215 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
8216 | } |
8217 | ||
8b93c638 | 8218 | void |
fba45db2 | 8219 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8220 | { |
8221 | rwatch_command (arg, from_tty); | |
8222 | } | |
8926118c | 8223 | |
c5aa993b | 8224 | static void |
fba45db2 | 8225 | rwatch_command (char *arg, int from_tty) |
c906108c | 8226 | { |
53a5351d | 8227 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
8228 | } |
8229 | ||
8b93c638 | 8230 | void |
fba45db2 | 8231 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8232 | { |
8233 | awatch_command (arg, from_tty); | |
8234 | } | |
8926118c | 8235 | |
c5aa993b | 8236 | static void |
fba45db2 | 8237 | awatch_command (char *arg, int from_tty) |
c906108c | 8238 | { |
53a5351d | 8239 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 8240 | } |
c906108c | 8241 | \f |
c5aa993b | 8242 | |
43ff13b4 | 8243 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8244 | because it uses the mechanisms of breakpoints. */ |
8245 | ||
bfec99b2 PA |
8246 | struct until_break_command_continuation_args |
8247 | { | |
8248 | struct breakpoint *breakpoint; | |
8249 | struct breakpoint *breakpoint2; | |
8250 | }; | |
8251 | ||
43ff13b4 JM |
8252 | /* This function is called by fetch_inferior_event via the |
8253 | cmd_continuation pointer, to complete the until command. It takes | |
8254 | care of cleaning up the temporary breakpoints set up by the until | |
8255 | command. */ | |
c2c6d25f | 8256 | static void |
604ead4a | 8257 | until_break_command_continuation (void *arg) |
43ff13b4 | 8258 | { |
bfec99b2 PA |
8259 | struct until_break_command_continuation_args *a = arg; |
8260 | ||
8261 | delete_breakpoint (a->breakpoint); | |
8262 | if (a->breakpoint2) | |
8263 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
8264 | } |
8265 | ||
c906108c | 8266 | void |
ae66c1fc | 8267 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8268 | { |
8269 | struct symtabs_and_lines sals; | |
8270 | struct symtab_and_line sal; | |
206415a3 | 8271 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8272 | struct breakpoint *breakpoint; |
f107f563 | 8273 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
8274 | struct cleanup *old_chain; |
8275 | ||
8276 | clear_proceed_status (); | |
8277 | ||
8278 | /* Set a breakpoint where the user wants it and at return from | |
8279 | this function */ | |
c5aa993b | 8280 | |
c906108c SS |
8281 | if (default_breakpoint_valid) |
8282 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8283 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8284 | else |
53a5351d | 8285 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8286 | 0, (char ***) NULL, NULL); |
c5aa993b | 8287 | |
c906108c | 8288 | if (sals.nelts != 1) |
8a3fe4f8 | 8289 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8290 | |
c906108c | 8291 | sal = sals.sals[0]; |
b8c9b27d | 8292 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 8293 | |
c906108c | 8294 | if (*arg) |
8a3fe4f8 | 8295 | error (_("Junk at end of arguments.")); |
c5aa993b | 8296 | |
c906108c | 8297 | resolve_sal_pc (&sal); |
c5aa993b | 8298 | |
ae66c1fc EZ |
8299 | if (anywhere) |
8300 | /* If the user told us to continue until a specified location, | |
8301 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8302 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8303 | null_frame_id, bp_until); | |
ae66c1fc | 8304 | else |
edb3359d | 8305 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 8306 | at the very same frame. */ |
a6d9a66e UW |
8307 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8308 | get_stack_frame_id (frame), | |
ae66c1fc | 8309 | bp_until); |
c5aa993b | 8310 | |
f107f563 | 8311 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8312 | |
ae66c1fc EZ |
8313 | /* Keep within the current frame, or in frames called by the current |
8314 | one. */ | |
edb3359d DJ |
8315 | |
8316 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8317 | { |
edb3359d DJ |
8318 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8319 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8320 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8321 | sal, | |
edb3359d | 8322 | frame_unwind_caller_id (frame), |
f107f563 VP |
8323 | bp_until); |
8324 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 8325 | } |
c5aa993b | 8326 | |
c906108c | 8327 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
8328 | |
8329 | /* If we are running asynchronously, and proceed call above has actually | |
8330 | managed to start the target, arrange for breakpoints to be | |
8331 | deleted when the target stops. Otherwise, we're already stopped and | |
8332 | delete breakpoints via cleanup chain. */ | |
8333 | ||
8ea051c5 | 8334 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8335 | { |
bfec99b2 PA |
8336 | struct until_break_command_continuation_args *args; |
8337 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8338 | |
bfec99b2 PA |
8339 | args->breakpoint = breakpoint; |
8340 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
8341 | |
8342 | discard_cleanups (old_chain); | |
95e54da7 PA |
8343 | add_continuation (inferior_thread (), |
8344 | until_break_command_continuation, args, | |
604ead4a | 8345 | xfree); |
f107f563 VP |
8346 | } |
8347 | else | |
c5aa993b | 8348 | do_cleanups (old_chain); |
c906108c | 8349 | } |
ae66c1fc | 8350 | |
c906108c | 8351 | static void |
fba45db2 | 8352 | ep_skip_leading_whitespace (char **s) |
c906108c | 8353 | { |
c5aa993b JM |
8354 | if ((s == NULL) || (*s == NULL)) |
8355 | return; | |
8356 | while (isspace (**s)) | |
8357 | *s += 1; | |
c906108c | 8358 | } |
c5aa993b | 8359 | |
c906108c SS |
8360 | /* This function attempts to parse an optional "if <cond>" clause |
8361 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8362 | |
c906108c SS |
8363 | Else, it returns a pointer to the condition string. (It does not |
8364 | attempt to evaluate the string against a particular block.) And, | |
8365 | it updates arg to point to the first character following the parsed | |
8366 | if clause in the arg string. */ | |
53a5351d | 8367 | |
c906108c | 8368 | static char * |
fba45db2 | 8369 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8370 | { |
c5aa993b JM |
8371 | char *cond_string; |
8372 | ||
8373 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8374 | return NULL; |
c5aa993b | 8375 | |
c906108c SS |
8376 | /* Skip the "if" keyword. */ |
8377 | (*arg) += 2; | |
c5aa993b | 8378 | |
c906108c SS |
8379 | /* Skip any extra leading whitespace, and record the start of the |
8380 | condition string. */ | |
8381 | ep_skip_leading_whitespace (arg); | |
8382 | cond_string = *arg; | |
c5aa993b | 8383 | |
c906108c SS |
8384 | /* Assume that the condition occupies the remainder of the arg string. */ |
8385 | (*arg) += strlen (cond_string); | |
c5aa993b | 8386 | |
c906108c SS |
8387 | return cond_string; |
8388 | } | |
c5aa993b | 8389 | |
c906108c SS |
8390 | /* Commands to deal with catching events, such as signals, exceptions, |
8391 | process start/exit, etc. */ | |
c5aa993b JM |
8392 | |
8393 | typedef enum | |
8394 | { | |
44feb3ce TT |
8395 | catch_fork_temporary, catch_vfork_temporary, |
8396 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8397 | } |
8398 | catch_fork_kind; | |
8399 | ||
c906108c | 8400 | static void |
cc59ec59 MS |
8401 | catch_fork_command_1 (char *arg, int from_tty, |
8402 | struct cmd_list_element *command) | |
c906108c | 8403 | { |
a6d9a66e | 8404 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8405 | char *cond_string = NULL; |
44feb3ce TT |
8406 | catch_fork_kind fork_kind; |
8407 | int tempflag; | |
8408 | ||
8409 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8410 | tempflag = (fork_kind == catch_fork_temporary | |
8411 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8412 | |
44feb3ce TT |
8413 | if (!arg) |
8414 | arg = ""; | |
c906108c | 8415 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8416 | |
c906108c | 8417 | /* The allowed syntax is: |
c5aa993b JM |
8418 | catch [v]fork |
8419 | catch [v]fork if <cond> | |
8420 | ||
c906108c SS |
8421 | First, check if there's an if clause. */ |
8422 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 8423 | |
c906108c | 8424 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8425 | error (_("Junk at end of arguments.")); |
c5aa993b | 8426 | |
c906108c SS |
8427 | /* If this target supports it, create a fork or vfork catchpoint |
8428 | and enable reporting of such events. */ | |
c5aa993b JM |
8429 | switch (fork_kind) |
8430 | { | |
44feb3ce TT |
8431 | case catch_fork_temporary: |
8432 | case catch_fork_permanent: | |
a6d9a66e | 8433 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8434 | &catch_fork_breakpoint_ops); |
c906108c | 8435 | break; |
44feb3ce TT |
8436 | case catch_vfork_temporary: |
8437 | case catch_vfork_permanent: | |
a6d9a66e | 8438 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8439 | &catch_vfork_breakpoint_ops); |
c906108c | 8440 | break; |
c5aa993b | 8441 | default: |
8a3fe4f8 | 8442 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8443 | break; |
c5aa993b | 8444 | } |
c906108c SS |
8445 | } |
8446 | ||
8447 | static void | |
cc59ec59 MS |
8448 | catch_exec_command_1 (char *arg, int from_tty, |
8449 | struct cmd_list_element *command) | |
c906108c | 8450 | { |
a6d9a66e | 8451 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8452 | int tempflag; |
c5aa993b | 8453 | char *cond_string = NULL; |
c906108c | 8454 | |
44feb3ce TT |
8455 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8456 | ||
8457 | if (!arg) | |
8458 | arg = ""; | |
c906108c SS |
8459 | ep_skip_leading_whitespace (&arg); |
8460 | ||
8461 | /* The allowed syntax is: | |
c5aa993b JM |
8462 | catch exec |
8463 | catch exec if <cond> | |
c906108c SS |
8464 | |
8465 | First, check if there's an if clause. */ | |
8466 | cond_string = ep_parse_optional_if_clause (&arg); | |
8467 | ||
8468 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8469 | error (_("Junk at end of arguments.")); |
c906108c SS |
8470 | |
8471 | /* If this target supports it, create an exec catchpoint | |
8472 | and enable reporting of such events. */ | |
a6d9a66e UW |
8473 | create_catchpoint (gdbarch, tempflag, cond_string, |
8474 | &catch_exec_breakpoint_ops); | |
c906108c | 8475 | } |
c5aa993b | 8476 | |
3086aeae DJ |
8477 | static enum print_stop_action |
8478 | print_exception_catchpoint (struct breakpoint *b) | |
8479 | { | |
ade92717 | 8480 | int bp_temp, bp_throw; |
3086aeae | 8481 | |
ade92717 | 8482 | annotate_catchpoint (b->number); |
3086aeae | 8483 | |
ade92717 AR |
8484 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8485 | if (b->loc->address != b->loc->requested_address) | |
8486 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8487 | b->loc->address, | |
8488 | b->number, 1); | |
df2b6d2d | 8489 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8490 | ui_out_text (uiout, |
8491 | bp_temp ? "Temporary catchpoint " | |
8492 | : "Catchpoint "); | |
8493 | if (!ui_out_is_mi_like_p (uiout)) | |
8494 | ui_out_field_int (uiout, "bkptno", b->number); | |
8495 | ui_out_text (uiout, | |
c0b37c48 AR |
8496 | bp_throw ? " (exception thrown), " |
8497 | : " (exception caught), "); | |
ade92717 AR |
8498 | if (ui_out_is_mi_like_p (uiout)) |
8499 | { | |
8500 | ui_out_field_string (uiout, "reason", | |
8501 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8502 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8503 | ui_out_field_int (uiout, "bkptno", b->number); | |
8504 | } | |
3086aeae DJ |
8505 | return PRINT_SRC_AND_LOC; |
8506 | } | |
8507 | ||
8508 | static void | |
cc59ec59 MS |
8509 | print_one_exception_catchpoint (struct breakpoint *b, |
8510 | struct bp_location **last_loc) | |
3086aeae | 8511 | { |
79a45b7d | 8512 | struct value_print_options opts; |
cc59ec59 | 8513 | |
79a45b7d TT |
8514 | get_user_print_options (&opts); |
8515 | if (opts.addressprint) | |
3086aeae DJ |
8516 | { |
8517 | annotate_field (4); | |
604133b5 AR |
8518 | if (b->loc == NULL || b->loc->shlib_disabled) |
8519 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8520 | else | |
5af949e3 UW |
8521 | ui_out_field_core_addr (uiout, "addr", |
8522 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8523 | } |
8524 | annotate_field (5); | |
604133b5 | 8525 | if (b->loc) |
a6d9a66e | 8526 | *last_loc = b->loc; |
3086aeae DJ |
8527 | if (strstr (b->addr_string, "throw") != NULL) |
8528 | ui_out_field_string (uiout, "what", "exception throw"); | |
8529 | else | |
8530 | ui_out_field_string (uiout, "what", "exception catch"); | |
8531 | } | |
8532 | ||
8533 | static void | |
8534 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8535 | { | |
ade92717 AR |
8536 | int bp_temp; |
8537 | int bp_throw; | |
8538 | ||
df2b6d2d | 8539 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8540 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8541 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8542 | : _("Catchpoint ")); | |
8543 | ui_out_field_int (uiout, "bkptno", b->number); | |
8544 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8545 | : _(" (catch)")); | |
3086aeae DJ |
8546 | } |
8547 | ||
6149aea9 PA |
8548 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8549 | catch catchpoints. */ | |
8550 | ||
8551 | static void | |
8552 | print_recreate_exception_catchpoint (struct breakpoint *b, struct ui_file *fp) | |
8553 | { | |
8554 | int bp_temp; | |
8555 | int bp_throw; | |
8556 | ||
8557 | bp_temp = b->disposition == disp_del; | |
8558 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8559 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8560 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8561 | } | |
8562 | ||
3086aeae | 8563 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8564 | NULL, /* insert */ |
8565 | NULL, /* remove */ | |
8566 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8567 | print_exception_catchpoint, |
8568 | print_one_exception_catchpoint, | |
6149aea9 PA |
8569 | print_mention_exception_catchpoint, |
8570 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8571 | }; |
8572 | ||
8573 | static int | |
8574 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8575 | enum exception_event_kind ex_event, int from_tty) | |
8576 | { | |
604133b5 AR |
8577 | char *trigger_func_name; |
8578 | ||
3086aeae | 8579 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8580 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8581 | else |
604133b5 | 8582 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8583 | |
8cdf0e15 VP |
8584 | create_breakpoint (get_current_arch (), |
8585 | trigger_func_name, cond_string, -1, | |
8586 | 0 /* condition and thread are valid. */, | |
8587 | tempflag, 0, 0, | |
8588 | 0, | |
8589 | AUTO_BOOLEAN_TRUE /* pending */, | |
8590 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
8591 | 1 /* enabled */); | |
3086aeae | 8592 | |
3086aeae DJ |
8593 | return 1; |
8594 | } | |
8595 | ||
c5aa993b | 8596 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
8597 | |
8598 | static void | |
fba45db2 KB |
8599 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8600 | int tempflag, int from_tty) | |
c906108c | 8601 | { |
c5aa993b | 8602 | char *cond_string = NULL; |
c5aa993b | 8603 | |
44feb3ce TT |
8604 | if (!arg) |
8605 | arg = ""; | |
c906108c | 8606 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8607 | |
c906108c SS |
8608 | cond_string = ep_parse_optional_if_clause (&arg); |
8609 | ||
8610 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8611 | error (_("Junk at end of arguments.")); |
c906108c | 8612 | |
059fb39f PM |
8613 | if (ex_event != EX_EVENT_THROW |
8614 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 8615 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 8616 | |
3086aeae DJ |
8617 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
8618 | return; | |
8619 | ||
8a3fe4f8 | 8620 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
8621 | } |
8622 | ||
44feb3ce TT |
8623 | /* Implementation of "catch catch" command. */ |
8624 | ||
8625 | static void | |
8626 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8627 | { | |
8628 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8629 | |
44feb3ce TT |
8630 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
8631 | } | |
8632 | ||
8633 | /* Implementation of "catch throw" command. */ | |
8634 | ||
8635 | static void | |
8636 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8637 | { | |
8638 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8639 | |
44feb3ce TT |
8640 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
8641 | } | |
8642 | ||
f7f9143b JB |
8643 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8644 | ||
8645 | static void | |
a6d9a66e UW |
8646 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8647 | struct symtab_and_line sal, | |
f7f9143b JB |
8648 | char *addr_string, |
8649 | char *exp_string, | |
8650 | char *cond_string, | |
8651 | struct expression *cond, | |
8652 | struct breakpoint_ops *ops, | |
8653 | int tempflag, | |
8654 | int from_tty) | |
8655 | { | |
8656 | struct breakpoint *b; | |
8657 | ||
8658 | if (from_tty) | |
8659 | { | |
5af949e3 UW |
8660 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8661 | if (!loc_gdbarch) | |
8662 | loc_gdbarch = gdbarch; | |
8663 | ||
6c95b8df PA |
8664 | describe_other_breakpoints (loc_gdbarch, |
8665 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8666 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8667 | version for exception catchpoints, because two catchpoints | |
8668 | used for different exception names will use the same address. | |
8669 | In this case, a "breakpoint ... also set at..." warning is | |
8670 | unproductive. Besides. the warning phrasing is also a bit | |
8671 | inapropriate, we should use the word catchpoint, and tell | |
8672 | the user what type of catchpoint it is. The above is good | |
8673 | enough for now, though. */ | |
8674 | } | |
8675 | ||
a6d9a66e | 8676 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8677 | set_breakpoint_count (breakpoint_count + 1); |
8678 | ||
8679 | b->enable_state = bp_enabled; | |
8680 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8681 | b->number = breakpoint_count; | |
8682 | b->ignore_count = 0; | |
511a6cd4 | 8683 | b->loc->cond = cond; |
f7f9143b JB |
8684 | b->addr_string = addr_string; |
8685 | b->language = language_ada; | |
8686 | b->cond_string = cond_string; | |
8687 | b->exp_string = exp_string; | |
8688 | b->thread = -1; | |
8689 | b->ops = ops; | |
f7f9143b JB |
8690 | |
8691 | mention (b); | |
b60e7edf | 8692 | update_global_location_list (1); |
f7f9143b JB |
8693 | } |
8694 | ||
8695 | /* Implement the "catch exception" command. */ | |
8696 | ||
8697 | static void | |
44feb3ce TT |
8698 | catch_ada_exception_command (char *arg, int from_tty, |
8699 | struct cmd_list_element *command) | |
f7f9143b | 8700 | { |
a6d9a66e | 8701 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8702 | int tempflag; |
f7f9143b | 8703 | struct symtab_and_line sal; |
f7f9143b JB |
8704 | char *addr_string = NULL; |
8705 | char *exp_string = NULL; | |
8706 | char *cond_string = NULL; | |
8707 | struct expression *cond = NULL; | |
8708 | struct breakpoint_ops *ops = NULL; | |
8709 | ||
44feb3ce TT |
8710 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8711 | ||
8712 | if (!arg) | |
8713 | arg = ""; | |
f7f9143b JB |
8714 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
8715 | &cond_string, &cond, &ops); | |
a6d9a66e | 8716 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
8717 | cond_string, cond, ops, tempflag, |
8718 | from_tty); | |
8719 | } | |
8720 | ||
a96d9b2e SDJ |
8721 | /* Cleanup function for a syscall filter list. */ |
8722 | static void | |
8723 | clean_up_filters (void *arg) | |
8724 | { | |
8725 | VEC(int) *iter = *(VEC(int) **) arg; | |
8726 | VEC_free (int, iter); | |
8727 | } | |
8728 | ||
8729 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8730 | filter list, or NULL if no filtering is required. */ | |
8731 | static VEC(int) * | |
8732 | catch_syscall_split_args (char *arg) | |
8733 | { | |
8734 | VEC(int) *result = NULL; | |
8735 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8736 | ||
8737 | while (*arg != '\0') | |
8738 | { | |
8739 | int i, syscall_number; | |
8740 | char *endptr; | |
8741 | char cur_name[128]; | |
8742 | struct syscall s; | |
8743 | ||
8744 | /* Skip whitespace. */ | |
8745 | while (isspace (*arg)) | |
8746 | arg++; | |
8747 | ||
8748 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8749 | cur_name[i] = arg[i]; | |
8750 | cur_name[i] = '\0'; | |
8751 | arg += i; | |
8752 | ||
8753 | /* Check if the user provided a syscall name or a number. */ | |
8754 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8755 | if (*endptr == '\0') | |
bccd0dd2 | 8756 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8757 | else |
8758 | { | |
8759 | /* We have a name. Let's check if it's valid and convert it | |
8760 | to a number. */ | |
8761 | get_syscall_by_name (cur_name, &s); | |
8762 | ||
8763 | if (s.number == UNKNOWN_SYSCALL) | |
8764 | /* Here we have to issue an error instead of a warning, because | |
8765 | GDB cannot do anything useful if there's no syscall number to | |
8766 | be caught. */ | |
8767 | error (_("Unknown syscall name '%s'."), cur_name); | |
8768 | } | |
8769 | ||
8770 | /* Ok, it's valid. */ | |
8771 | VEC_safe_push (int, result, s.number); | |
8772 | } | |
8773 | ||
8774 | discard_cleanups (cleanup); | |
8775 | return result; | |
8776 | } | |
8777 | ||
8778 | /* Implement the "catch syscall" command. */ | |
8779 | ||
8780 | static void | |
cc59ec59 MS |
8781 | catch_syscall_command_1 (char *arg, int from_tty, |
8782 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
8783 | { |
8784 | int tempflag; | |
8785 | VEC(int) *filter; | |
8786 | struct syscall s; | |
8787 | struct gdbarch *gdbarch = get_current_arch (); | |
8788 | ||
8789 | /* Checking if the feature if supported. */ | |
8790 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8791 | error (_("The feature 'catch syscall' is not supported on \ | |
8792 | this architeture yet.")); | |
8793 | ||
8794 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8795 | ||
8796 | ep_skip_leading_whitespace (&arg); | |
8797 | ||
8798 | /* We need to do this first "dummy" translation in order | |
8799 | to get the syscall XML file loaded or, most important, | |
8800 | to display a warning to the user if there's no XML file | |
8801 | for his/her architecture. */ | |
8802 | get_syscall_by_number (0, &s); | |
8803 | ||
8804 | /* The allowed syntax is: | |
8805 | catch syscall | |
8806 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8807 | ||
8808 | Let's check if there's a syscall name. */ | |
8809 | ||
8810 | if (arg != NULL) | |
8811 | filter = catch_syscall_split_args (arg); | |
8812 | else | |
8813 | filter = NULL; | |
8814 | ||
8815 | create_syscall_event_catchpoint (tempflag, filter, | |
8816 | &catch_syscall_breakpoint_ops); | |
8817 | } | |
8818 | ||
f7f9143b JB |
8819 | /* Implement the "catch assert" command. */ |
8820 | ||
8821 | static void | |
44feb3ce | 8822 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8823 | { |
a6d9a66e | 8824 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8825 | int tempflag; |
f7f9143b JB |
8826 | struct symtab_and_line sal; |
8827 | char *addr_string = NULL; | |
8828 | struct breakpoint_ops *ops = NULL; | |
8829 | ||
44feb3ce TT |
8830 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8831 | ||
8832 | if (!arg) | |
8833 | arg = ""; | |
f7f9143b | 8834 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8835 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8836 | ops, tempflag, from_tty); | |
f7f9143b JB |
8837 | } |
8838 | ||
c906108c | 8839 | static void |
fba45db2 | 8840 | catch_command (char *arg, int from_tty) |
c906108c | 8841 | { |
44feb3ce | 8842 | error (_("Catch requires an event name.")); |
c906108c SS |
8843 | } |
8844 | \f | |
8845 | ||
8846 | static void | |
fba45db2 | 8847 | tcatch_command (char *arg, int from_tty) |
c906108c | 8848 | { |
44feb3ce | 8849 | error (_("Catch requires an event name.")); |
c906108c SS |
8850 | } |
8851 | ||
80f8a6eb | 8852 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8853 | |
8854 | static void | |
fba45db2 | 8855 | clear_command (char *arg, int from_tty) |
c906108c | 8856 | { |
d6e956e5 VP |
8857 | struct breakpoint *b; |
8858 | VEC(breakpoint_p) *found = 0; | |
8859 | int ix; | |
c906108c SS |
8860 | int default_match; |
8861 | struct symtabs_and_lines sals; | |
8862 | struct symtab_and_line sal; | |
c906108c SS |
8863 | int i; |
8864 | ||
8865 | if (arg) | |
8866 | { | |
8867 | sals = decode_line_spec (arg, 1); | |
8868 | default_match = 0; | |
8869 | } | |
8870 | else | |
8871 | { | |
c5aa993b | 8872 | sals.sals = (struct symtab_and_line *) |
c906108c | 8873 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8874 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8875 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8876 | sal.line = default_breakpoint_line; |
8877 | sal.symtab = default_breakpoint_symtab; | |
8878 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8879 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8880 | if (sal.symtab == 0) |
8a3fe4f8 | 8881 | error (_("No source file specified.")); |
c906108c SS |
8882 | |
8883 | sals.sals[0] = sal; | |
8884 | sals.nelts = 1; | |
8885 | ||
8886 | default_match = 1; | |
8887 | } | |
8888 | ||
ed0616c6 VP |
8889 | /* We don't call resolve_sal_pc here. That's not |
8890 | as bad as it seems, because all existing breakpoints | |
8891 | typically have both file/line and pc set. So, if | |
8892 | clear is given file/line, we can match this to existing | |
8893 | breakpoint without obtaining pc at all. | |
8894 | ||
8895 | We only support clearing given the address explicitly | |
8896 | present in breakpoint table. Say, we've set breakpoint | |
8897 | at file:line. There were several PC values for that file:line, | |
8898 | due to optimization, all in one block. | |
8899 | We've picked one PC value. If "clear" is issued with another | |
8900 | PC corresponding to the same file:line, the breakpoint won't | |
8901 | be cleared. We probably can still clear the breakpoint, but | |
8902 | since the other PC value is never presented to user, user | |
8903 | can only find it by guessing, and it does not seem important | |
8904 | to support that. */ | |
8905 | ||
c906108c | 8906 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8907 | to it. Do it in two passes, solely to preserve the current |
8908 | behavior that from_tty is forced true if we delete more than | |
8909 | one breakpoint. */ | |
c906108c | 8910 | |
80f8a6eb | 8911 | found = NULL; |
c906108c SS |
8912 | for (i = 0; i < sals.nelts; i++) |
8913 | { | |
8914 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8915 | If line given (pc == 0), clear all bpts on specified line. |
8916 | If defaulting, clear all bpts on default line | |
c906108c | 8917 | or at default pc. |
c5aa993b JM |
8918 | |
8919 | defaulting sal.pc != 0 tests to do | |
8920 | ||
8921 | 0 1 pc | |
8922 | 1 1 pc _and_ line | |
8923 | 0 0 line | |
8924 | 1 0 <can't happen> */ | |
c906108c SS |
8925 | |
8926 | sal = sals.sals[i]; | |
c906108c | 8927 | |
d6e956e5 VP |
8928 | /* Find all matching breakpoints and add them to |
8929 | 'found'. */ | |
8930 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8931 | { |
0d381245 | 8932 | int match = 0; |
80f8a6eb | 8933 | /* Are we going to delete b? */ |
cc60f2e3 | 8934 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
8935 | { |
8936 | struct bp_location *loc = b->loc; | |
8937 | for (; loc; loc = loc->next) | |
8938 | { | |
6c95b8df PA |
8939 | int pc_match = sal.pc |
8940 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8941 | && (loc->address == sal.pc) |
8942 | && (!section_is_overlay (loc->section) | |
8943 | || loc->section == sal.section); | |
8944 | int line_match = ((default_match || (0 == sal.pc)) | |
8945 | && b->source_file != NULL | |
8946 | && sal.symtab != NULL | |
6c95b8df | 8947 | && sal.pspace == loc->pspace |
0d381245 VP |
8948 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8949 | && b->line_number == sal.line); | |
8950 | if (pc_match || line_match) | |
8951 | { | |
8952 | match = 1; | |
8953 | break; | |
8954 | } | |
8955 | } | |
8956 | } | |
8957 | ||
8958 | if (match) | |
d6e956e5 | 8959 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8960 | } |
80f8a6eb MS |
8961 | } |
8962 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8963 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8964 | { |
8965 | if (arg) | |
8a3fe4f8 | 8966 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8967 | else |
8a3fe4f8 | 8968 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8969 | } |
c906108c | 8970 | |
d6e956e5 | 8971 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8972 | from_tty = 1; /* Always report if deleted more than one */ |
8973 | if (from_tty) | |
a3f17187 | 8974 | { |
d6e956e5 | 8975 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8976 | printf_unfiltered (_("Deleted breakpoint ")); |
8977 | else | |
8978 | printf_unfiltered (_("Deleted breakpoints ")); | |
8979 | } | |
80f8a6eb | 8980 | breakpoints_changed (); |
d6e956e5 VP |
8981 | |
8982 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8983 | { |
c5aa993b | 8984 | if (from_tty) |
d6e956e5 VP |
8985 | printf_unfiltered ("%d ", b->number); |
8986 | delete_breakpoint (b); | |
c906108c | 8987 | } |
80f8a6eb MS |
8988 | if (from_tty) |
8989 | putchar_unfiltered ('\n'); | |
c906108c SS |
8990 | } |
8991 | \f | |
8992 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8993 | all breakpoints that are marked for deletion, whether hit or not. | |
8994 | This is called after any breakpoint is hit, or after errors. */ | |
8995 | ||
8996 | void | |
fba45db2 | 8997 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8998 | { |
8999 | struct breakpoint *b, *temp; | |
9000 | ||
9001 | for (; bs; bs = bs->next) | |
20874c92 VP |
9002 | if (bs->breakpoint_at |
9003 | && bs->breakpoint_at->owner | |
9004 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 9005 | && bs->stop) |
4f8d1dc6 | 9006 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
9007 | |
9008 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 9009 | { |
b5de0fa7 | 9010 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9011 | delete_breakpoint (b); |
9012 | } | |
c906108c SS |
9013 | } |
9014 | ||
494cfb0f | 9015 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
9016 | Sort elements primarily by their ADDRESS (no matter what does |
9017 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
9018 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
9019 | is sorted stable way despite qsort being an instable algorithm. */ | |
9020 | ||
9021 | static int | |
494cfb0f | 9022 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9023 | { |
494cfb0f JK |
9024 | struct bp_location *a = *(void **) ap; |
9025 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9026 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9027 | int a_perm = a->owner->enable_state == bp_permanent; |
9028 | int b_perm = b->owner->enable_state == bp_permanent; | |
9029 | ||
9030 | if (a->address != b->address) | |
9031 | return (a->address > b->address) - (a->address < b->address); | |
9032 | ||
9033 | /* Sort permanent breakpoints first. */ | |
9034 | if (a_perm != b_perm) | |
9035 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9036 | ||
9037 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
9038 | breakpoint can be sorted in arbitrary order. */ | |
9039 | ||
9040 | if (a->owner->number != b->owner->number) | |
9041 | return (a->owner->number > b->owner->number) | |
9042 | - (a->owner->number < b->owner->number); | |
9043 | ||
9044 | return (a > b) - (a < b); | |
9045 | } | |
9046 | ||
876fa593 JK |
9047 | /* Set bp_location_placed_address_before_address_max and |
9048 | bp_location_shadow_len_after_address_max according to the current content of | |
9049 | the bp_location array. */ | |
f7545552 TT |
9050 | |
9051 | static void | |
876fa593 | 9052 | bp_location_target_extensions_update (void) |
f7545552 | 9053 | { |
876fa593 JK |
9054 | struct bp_location *bl, **blp_tmp; |
9055 | ||
9056 | bp_location_placed_address_before_address_max = 0; | |
9057 | bp_location_shadow_len_after_address_max = 0; | |
9058 | ||
9059 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9060 | { | |
9061 | CORE_ADDR start, end, addr; | |
9062 | ||
9063 | if (!bp_location_has_shadow (bl)) | |
9064 | continue; | |
9065 | ||
9066 | start = bl->target_info.placed_address; | |
9067 | end = start + bl->target_info.shadow_len; | |
9068 | ||
9069 | gdb_assert (bl->address >= start); | |
9070 | addr = bl->address - start; | |
9071 | if (addr > bp_location_placed_address_before_address_max) | |
9072 | bp_location_placed_address_before_address_max = addr; | |
9073 | ||
9074 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9075 | ||
9076 | gdb_assert (bl->address < end); | |
9077 | addr = end - bl->address; | |
9078 | if (addr > bp_location_shadow_len_after_address_max) | |
9079 | bp_location_shadow_len_after_address_max = addr; | |
9080 | } | |
f7545552 TT |
9081 | } |
9082 | ||
4cd9bd08 | 9083 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9084 | into the inferior, only remove already-inserted locations that no |
9085 | longer should be inserted. Functions that delete a breakpoint or | |
9086 | breakpoints should pass false, so that deleting a breakpoint | |
9087 | doesn't have the side effect of inserting the locations of other | |
9088 | breakpoints that are marked not-inserted, but should_be_inserted | |
9089 | returns true on them. | |
9090 | ||
9091 | This behaviour is useful is situations close to tear-down -- e.g., | |
9092 | after an exec, while the target still has execution, but breakpoint | |
9093 | shadows of the previous executable image should *NOT* be restored | |
9094 | to the new image; or before detaching, where the target still has | |
9095 | execution and wants to delete breakpoints from GDB's lists, and all | |
9096 | breakpoints had already been removed from the inferior. */ | |
9097 | ||
0d381245 | 9098 | static void |
b60e7edf | 9099 | update_global_location_list (int should_insert) |
0d381245 | 9100 | { |
74960c60 | 9101 | struct breakpoint *b; |
876fa593 | 9102 | struct bp_location **locp, *loc; |
f7545552 TT |
9103 | struct cleanup *cleanups; |
9104 | ||
2d134ed3 PA |
9105 | /* Used in the duplicates detection below. When iterating over all |
9106 | bp_locations, points to the first bp_location of a given address. | |
9107 | Breakpoints and watchpoints of different types are never | |
9108 | duplicates of each other. Keep one pointer for each type of | |
9109 | breakpoint/watchpoint, so we only need to loop over all locations | |
9110 | once. */ | |
9111 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9112 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9113 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9114 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
9115 | |
9116 | /* Saved former bp_location array which we compare against the newly built | |
9117 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
9118 | struct bp_location **old_location, **old_locp; | |
9119 | unsigned old_location_count; | |
9120 | ||
9121 | old_location = bp_location; | |
9122 | old_location_count = bp_location_count; | |
9123 | bp_location = NULL; | |
9124 | bp_location_count = 0; | |
9125 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9126 | |
74960c60 | 9127 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9128 | for (loc = b->loc; loc; loc = loc->next) |
9129 | bp_location_count++; | |
9130 | ||
9131 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9132 | locp = bp_location; | |
9133 | ALL_BREAKPOINTS (b) | |
9134 | for (loc = b->loc; loc; loc = loc->next) | |
9135 | *locp++ = loc; | |
9136 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9137 | bp_location_compare); |
876fa593 JK |
9138 | |
9139 | bp_location_target_extensions_update (); | |
74960c60 VP |
9140 | |
9141 | /* Identify bp_location instances that are no longer present in the new | |
9142 | list, and therefore should be freed. Note that it's not necessary that | |
9143 | those locations should be removed from inferior -- if there's another | |
9144 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
9145 | we don't need to remove/insert the location. |
9146 | ||
9147 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
9148 | former bp_location array state respectively. */ | |
9149 | ||
9150 | locp = bp_location; | |
9151 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9152 | old_locp++) | |
74960c60 | 9153 | { |
876fa593 | 9154 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9155 | struct bp_location **loc2p; |
876fa593 JK |
9156 | |
9157 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 9158 | have to free it. */ |
c7d46a38 | 9159 | int found_object = 0; |
20874c92 VP |
9160 | /* Tells if the location should remain inserted in the target. */ |
9161 | int keep_in_target = 0; | |
9162 | int removed = 0; | |
876fa593 JK |
9163 | |
9164 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
9165 | at or being the one matching OLD_LOC. */ | |
9166 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 9167 | && (*locp)->address < old_loc->address) |
876fa593 | 9168 | locp++; |
c7d46a38 PA |
9169 | |
9170 | for (loc2p = locp; | |
9171 | (loc2p < bp_location + bp_location_count | |
9172 | && (*loc2p)->address == old_loc->address); | |
9173 | loc2p++) | |
9174 | { | |
9175 | if (*loc2p == old_loc) | |
9176 | { | |
9177 | found_object = 1; | |
9178 | break; | |
9179 | } | |
9180 | } | |
74960c60 VP |
9181 | |
9182 | /* If this location is no longer present, and inserted, look if there's | |
9183 | maybe a new location at the same address. If so, mark that one | |
9184 | inserted, and don't remove this one. This is needed so that we | |
9185 | don't have a time window where a breakpoint at certain location is not | |
9186 | inserted. */ | |
9187 | ||
876fa593 | 9188 | if (old_loc->inserted) |
0d381245 | 9189 | { |
74960c60 | 9190 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 9191 | |
876fa593 | 9192 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
9193 | { |
9194 | /* The location is still present in the location list, and still | |
9195 | should be inserted. Don't do anything. */ | |
20874c92 | 9196 | keep_in_target = 1; |
74960c60 VP |
9197 | } |
9198 | else | |
9199 | { | |
9200 | /* The location is either no longer present, or got disabled. | |
9201 | See if there's another location at the same address, in which | |
9202 | case we don't need to remove this one from the target. */ | |
876fa593 | 9203 | |
2bdf28a0 | 9204 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9205 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9206 | { | |
876fa593 | 9207 | for (loc2p = locp; |
c7d46a38 PA |
9208 | (loc2p < bp_location + bp_location_count |
9209 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9210 | loc2p++) |
9211 | { | |
9212 | struct bp_location *loc2 = *loc2p; | |
9213 | ||
2d134ed3 | 9214 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9215 | { |
9216 | /* For the sake of should_be_inserted. | |
9217 | Duplicates check below will fix up this later. */ | |
9218 | loc2->duplicate = 0; | |
85d721b8 PA |
9219 | |
9220 | /* Read watchpoint locations are switched to | |
9221 | access watchpoints, if the former are not | |
9222 | supported, but the latter are. */ | |
9223 | if (is_hardware_watchpoint (old_loc->owner)) | |
9224 | { | |
9225 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9226 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9227 | } | |
9228 | ||
c7d46a38 PA |
9229 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9230 | { | |
9231 | loc2->inserted = 1; | |
9232 | loc2->target_info = old_loc->target_info; | |
9233 | keep_in_target = 1; | |
9234 | break; | |
9235 | } | |
876fa593 JK |
9236 | } |
9237 | } | |
9238 | } | |
74960c60 VP |
9239 | } |
9240 | ||
20874c92 VP |
9241 | if (!keep_in_target) |
9242 | { | |
876fa593 | 9243 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
9244 | { |
9245 | /* This is just about all we can do. We could keep this | |
9246 | location on the global list, and try to remove it next | |
9247 | time, but there's no particular reason why we will | |
9248 | succeed next time. | |
9249 | ||
876fa593 | 9250 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
9251 | as delete_breakpoint frees the breakpoint only |
9252 | after calling us. */ | |
9253 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 9254 | old_loc->owner->number); |
20874c92 VP |
9255 | } |
9256 | removed = 1; | |
9257 | } | |
0d381245 | 9258 | } |
74960c60 VP |
9259 | |
9260 | if (!found_object) | |
1c5cfe86 | 9261 | { |
db82e815 PA |
9262 | if (removed && non_stop |
9263 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9264 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9265 | { |
db82e815 PA |
9266 | /* This location was removed from the target. In |
9267 | non-stop mode, a race condition is possible where | |
9268 | we've removed a breakpoint, but stop events for that | |
9269 | breakpoint are already queued and will arrive later. | |
9270 | We apply an heuristic to be able to distinguish such | |
9271 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9272 | breakpoint location for a bit, and will retire it | |
9273 | after we see some number of events. The theory here | |
9274 | is that reporting of events should, "on the average", | |
9275 | be fair, so after a while we'll see events from all | |
9276 | threads that have anything of interest, and no longer | |
9277 | need to keep this breakpoint location around. We | |
9278 | don't hold locations forever so to reduce chances of | |
9279 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9280 | SIGTRAP. | |
9281 | ||
9282 | The heuristic failing can be disastrous on | |
9283 | decr_pc_after_break targets. | |
9284 | ||
9285 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9286 | if we fail to recognize a late breakpoint SIGTRAP, | |
9287 | because events_till_retirement has reached 0 too | |
9288 | soon, we'll fail to do the PC adjustment, and report | |
9289 | a random SIGTRAP to the user. When the user resumes | |
9290 | the inferior, it will most likely immediately crash | |
2dec564e | 9291 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9292 | corrupted, because of being resumed e.g., in the |
9293 | middle of a multi-byte instruction, or skipped a | |
9294 | one-byte instruction. This was actually seen happen | |
9295 | on native x86-linux, and should be less rare on | |
9296 | targets that do not support new thread events, like | |
9297 | remote, due to the heuristic depending on | |
9298 | thread_count. | |
9299 | ||
9300 | Mistaking a random SIGTRAP for a breakpoint trap | |
9301 | causes similar symptoms (PC adjustment applied when | |
9302 | it shouldn't), but then again, playing with SIGTRAPs | |
9303 | behind the debugger's back is asking for trouble. | |
9304 | ||
9305 | Since hardware watchpoint traps are always | |
9306 | distinguishable from other traps, so we don't need to | |
9307 | apply keep hardware watchpoint moribund locations | |
9308 | around. We simply always ignore hardware watchpoint | |
9309 | traps we can no longer explain. */ | |
9310 | ||
876fa593 JK |
9311 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9312 | old_loc->owner = NULL; | |
20874c92 | 9313 | |
876fa593 | 9314 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9315 | } |
9316 | else | |
876fa593 | 9317 | free_bp_location (old_loc); |
20874c92 | 9318 | } |
74960c60 | 9319 | } |
1c5cfe86 | 9320 | |
2d134ed3 PA |
9321 | /* Rescan breakpoints at the same address and section, marking the |
9322 | first one as "first" and any others as "duplicates". This is so | |
9323 | that the bpt instruction is only inserted once. If we have a | |
9324 | permanent breakpoint at the same place as BPT, make that one the | |
9325 | official one, and the rest as duplicates. Permanent breakpoints | |
9326 | are sorted first for the same address. | |
9327 | ||
9328 | Do the same for hardware watchpoints, but also considering the | |
9329 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9330 | |
2d134ed3 PA |
9331 | bp_loc_first = NULL; |
9332 | wp_loc_first = NULL; | |
9333 | awp_loc_first = NULL; | |
9334 | rwp_loc_first = NULL; | |
876fa593 | 9335 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9336 | { |
2bdf28a0 | 9337 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
876fa593 | 9338 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9339 | struct bp_location **loc_first_p; |
876fa593 JK |
9340 | |
9341 | if (b->enable_state == bp_disabled | |
9342 | || b->enable_state == bp_call_disabled | |
9343 | || b->enable_state == bp_startup_disabled | |
9344 | || !loc->enabled | |
9345 | || loc->shlib_disabled | |
15c3d785 | 9346 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9347 | || is_tracepoint (b)) |
876fa593 JK |
9348 | continue; |
9349 | ||
9350 | /* Permanent breakpoint should always be inserted. */ | |
9351 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9352 | internal_error (__FILE__, __LINE__, | |
9353 | _("allegedly permanent breakpoint is not " | |
9354 | "actually inserted")); | |
9355 | ||
2d134ed3 PA |
9356 | if (b->type == bp_hardware_watchpoint) |
9357 | loc_first_p = &wp_loc_first; | |
9358 | else if (b->type == bp_read_watchpoint) | |
9359 | loc_first_p = &rwp_loc_first; | |
9360 | else if (b->type == bp_access_watchpoint) | |
9361 | loc_first_p = &awp_loc_first; | |
9362 | else | |
9363 | loc_first_p = &bp_loc_first; | |
9364 | ||
9365 | if (*loc_first_p == NULL | |
9366 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9367 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9368 | { |
2d134ed3 | 9369 | *loc_first_p = loc; |
876fa593 JK |
9370 | loc->duplicate = 0; |
9371 | continue; | |
9372 | } | |
9373 | ||
9374 | loc->duplicate = 1; | |
9375 | ||
2d134ed3 PA |
9376 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9377 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9378 | internal_error (__FILE__, __LINE__, |
9379 | _("another breakpoint was inserted on top of " | |
9380 | "a permanent breakpoint")); | |
0d381245 | 9381 | } |
74960c60 | 9382 | |
50c71eaf | 9383 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9384 | && (have_live_inferiors () |
2567c7d9 | 9385 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9386 | insert_breakpoint_locations (); |
f7545552 TT |
9387 | |
9388 | do_cleanups (cleanups); | |
74960c60 VP |
9389 | } |
9390 | ||
20874c92 VP |
9391 | void |
9392 | breakpoint_retire_moribund (void) | |
9393 | { | |
9394 | struct bp_location *loc; | |
9395 | int ix; | |
9396 | ||
9397 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9398 | if (--(loc->events_till_retirement) == 0) | |
9399 | { | |
9400 | free_bp_location (loc); | |
9401 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
9402 | --ix; | |
9403 | } | |
9404 | } | |
9405 | ||
74960c60 | 9406 | static void |
b60e7edf | 9407 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9408 | { |
9409 | struct gdb_exception e; | |
cc59ec59 | 9410 | |
74960c60 | 9411 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9412 | update_global_location_list (inserting); |
0d381245 VP |
9413 | } |
9414 | ||
1a2ab13a | 9415 | /* Clear LOC from a BPS. */ |
a474d7c2 | 9416 | static void |
1a2ab13a | 9417 | bpstat_remove_bp_location (bpstat bps, struct bp_location *loc) |
a474d7c2 PA |
9418 | { |
9419 | bpstat bs; | |
cc59ec59 | 9420 | |
a474d7c2 | 9421 | for (bs = bps; bs; bs = bs->next) |
1a2ab13a | 9422 | if (bs->breakpoint_at == loc) |
a474d7c2 PA |
9423 | { |
9424 | bs->breakpoint_at = NULL; | |
9425 | bs->old_val = NULL; | |
9426 | /* bs->commands will be freed later. */ | |
9427 | } | |
9428 | } | |
9429 | ||
9430 | /* Callback for iterate_over_threads. */ | |
9431 | static int | |
1a2ab13a | 9432 | bpstat_remove_bp_location_callback (struct thread_info *th, void *data) |
a474d7c2 | 9433 | { |
1a2ab13a | 9434 | struct bp_location *loc = data; |
cc59ec59 | 9435 | |
1a2ab13a | 9436 | bpstat_remove_bp_location (th->stop_bpstat, loc); |
a474d7c2 PA |
9437 | return 0; |
9438 | } | |
9439 | ||
53a5351d JM |
9440 | /* Delete a breakpoint and clean up all traces of it in the data |
9441 | structures. */ | |
c906108c SS |
9442 | |
9443 | void | |
fba45db2 | 9444 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9445 | { |
52f0bd74 | 9446 | struct breakpoint *b; |
c906108c | 9447 | |
8a3fe4f8 | 9448 | gdb_assert (bpt != NULL); |
c906108c SS |
9449 | |
9450 | /* Has this bp already been deleted? This can happen because multiple | |
9451 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
9452 | ||
9453 | One example of this happening is a watchpoint's scope bp. When the | |
9454 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
9455 | delete it. We also delete its scope bp. But the scope bp is marked | |
9456 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
9457 | checked for auto-deleting bp's, which are deleted. | |
9458 | ||
9459 | A real solution to this problem might involve reference counts in bp's, | |
9460 | and/or giving them pointers back to their referencing bpstat's, and | |
9461 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 9462 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
9463 | if (bpt->type == bp_none) |
9464 | return; | |
9465 | ||
e5a0a904 JK |
9466 | /* At least avoid this stale reference until the reference counting of |
9467 | breakpoints gets resolved. */ | |
9468 | if (bpt->related_breakpoint != NULL) | |
9469 | { | |
9470 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9471 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9472 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9473 | bpt->related_breakpoint = NULL; | |
9474 | } | |
9475 | ||
383f836e | 9476 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9477 | |
c906108c SS |
9478 | if (breakpoint_chain == bpt) |
9479 | breakpoint_chain = bpt->next; | |
9480 | ||
c906108c SS |
9481 | ALL_BREAKPOINTS (b) |
9482 | if (b->next == bpt) | |
c5aa993b JM |
9483 | { |
9484 | b->next = bpt->next; | |
9485 | break; | |
9486 | } | |
c906108c | 9487 | |
9add0f1b | 9488 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9489 | xfree (bpt->cond_string); |
9490 | xfree (bpt->cond_exp); | |
9491 | xfree (bpt->addr_string); | |
9492 | xfree (bpt->exp); | |
9493 | xfree (bpt->exp_string); | |
9494 | value_free (bpt->val); | |
9495 | xfree (bpt->source_file); | |
9496 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9497 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 9498 | |
74960c60 VP |
9499 | /* Now that breakpoint is removed from breakpoint |
9500 | list, update the global location list. This | |
9501 | will remove locations that used to belong to | |
9502 | this breakpoint. Do this before freeing | |
9503 | the breakpoint itself, since remove_breakpoint | |
9504 | looks at location's owner. It might be better | |
9505 | design to have location completely self-contained, | |
9506 | but it's not the case now. */ | |
b60e7edf | 9507 | update_global_location_list (0); |
74960c60 VP |
9508 | |
9509 | ||
c906108c SS |
9510 | /* On the chance that someone will soon try again to delete this same |
9511 | bp, we mark it as deleted before freeing its storage. */ | |
9512 | bpt->type = bp_none; | |
9513 | ||
b8c9b27d | 9514 | xfree (bpt); |
c906108c SS |
9515 | } |
9516 | ||
4d6140d9 AC |
9517 | static void |
9518 | do_delete_breakpoint_cleanup (void *b) | |
9519 | { | |
9520 | delete_breakpoint (b); | |
9521 | } | |
9522 | ||
9523 | struct cleanup * | |
9524 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9525 | { | |
9526 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9527 | } | |
9528 | ||
95a42b64 TT |
9529 | /* A callback for map_breakpoint_numbers that calls |
9530 | delete_breakpoint. */ | |
9531 | ||
9532 | static void | |
9533 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9534 | { | |
9535 | delete_breakpoint (b); | |
9536 | } | |
9537 | ||
c906108c | 9538 | void |
fba45db2 | 9539 | delete_command (char *arg, int from_tty) |
c906108c SS |
9540 | { |
9541 | struct breakpoint *b, *temp; | |
9542 | ||
ea9365bb TT |
9543 | dont_repeat (); |
9544 | ||
c906108c SS |
9545 | if (arg == 0) |
9546 | { | |
9547 | int breaks_to_delete = 0; | |
9548 | ||
9549 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
9550 | Do not delete internal or call-dummy breakpoints, these |
9551 | have to be deleted with an explicit breakpoint number argument. */ | |
9552 | ALL_BREAKPOINTS (b) | |
9553 | { | |
059fb39f | 9554 | if (b->type != bp_call_dummy |
aa7d318d | 9555 | && b->type != bp_std_terminate |
059fb39f | 9556 | && b->type != bp_shlib_event |
4efc6507 | 9557 | && b->type != bp_jit_event |
059fb39f PM |
9558 | && b->type != bp_thread_event |
9559 | && b->type != bp_overlay_event | |
0fd8e87f | 9560 | && b->type != bp_longjmp_master |
aa7d318d | 9561 | && b->type != bp_std_terminate_master |
059fb39f | 9562 | && b->number >= 0) |
973d738b DJ |
9563 | { |
9564 | breaks_to_delete = 1; | |
9565 | break; | |
9566 | } | |
c5aa993b | 9567 | } |
c906108c SS |
9568 | |
9569 | /* Ask user only if there are some breakpoints to delete. */ | |
9570 | if (!from_tty | |
e2e0b3e5 | 9571 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9572 | { |
c5aa993b JM |
9573 | ALL_BREAKPOINTS_SAFE (b, temp) |
9574 | { | |
059fb39f | 9575 | if (b->type != bp_call_dummy |
aa7d318d | 9576 | && b->type != bp_std_terminate |
059fb39f PM |
9577 | && b->type != bp_shlib_event |
9578 | && b->type != bp_thread_event | |
4efc6507 | 9579 | && b->type != bp_jit_event |
059fb39f | 9580 | && b->type != bp_overlay_event |
0fd8e87f | 9581 | && b->type != bp_longjmp_master |
aa7d318d | 9582 | && b->type != bp_std_terminate_master |
059fb39f | 9583 | && b->number >= 0) |
c5aa993b JM |
9584 | delete_breakpoint (b); |
9585 | } | |
c906108c SS |
9586 | } |
9587 | } | |
9588 | else | |
95a42b64 | 9589 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
9590 | } |
9591 | ||
0d381245 VP |
9592 | static int |
9593 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 9594 | { |
0d381245 VP |
9595 | for (; loc; loc = loc->next) |
9596 | if (!loc->shlib_disabled) | |
9597 | return 0; | |
9598 | return 1; | |
fe3f5fa8 VP |
9599 | } |
9600 | ||
776592bf DE |
9601 | /* Subroutine of update_breakpoint_locations to simplify it. |
9602 | Return non-zero if multiple fns in list LOC have the same name. | |
9603 | Null names are ignored. */ | |
9604 | ||
9605 | static int | |
9606 | ambiguous_names_p (struct bp_location *loc) | |
9607 | { | |
9608 | struct bp_location *l; | |
9609 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
9610 | (int (*) (const void *, |
9611 | const void *)) streq, | |
776592bf DE |
9612 | NULL, xcalloc, xfree); |
9613 | ||
9614 | for (l = loc; l != NULL; l = l->next) | |
9615 | { | |
9616 | const char **slot; | |
9617 | const char *name = l->function_name; | |
9618 | ||
9619 | /* Allow for some names to be NULL, ignore them. */ | |
9620 | if (name == NULL) | |
9621 | continue; | |
9622 | ||
9623 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
9624 | INSERT); | |
9625 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
9626 | NULL. */ | |
9627 | if (*slot != NULL) | |
9628 | { | |
9629 | htab_delete (htab); | |
9630 | return 1; | |
9631 | } | |
9632 | *slot = name; | |
9633 | } | |
9634 | ||
9635 | htab_delete (htab); | |
9636 | return 0; | |
9637 | } | |
9638 | ||
fe3f5fa8 | 9639 | static void |
0d381245 VP |
9640 | update_breakpoint_locations (struct breakpoint *b, |
9641 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
9642 | { |
9643 | int i; | |
9644 | char *s; | |
0d381245 VP |
9645 | struct bp_location *existing_locations = b->loc; |
9646 | ||
9647 | /* If there's no new locations, and all existing locations | |
9648 | are pending, don't do anything. This optimizes | |
9649 | the common case where all locations are in the same | |
9650 | shared library, that was unloaded. We'd like to | |
9651 | retain the location, so that when the library | |
9652 | is loaded again, we don't loose the enabled/disabled | |
9653 | status of the individual locations. */ | |
9654 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
9655 | return; |
9656 | ||
fe3f5fa8 VP |
9657 | b->loc = NULL; |
9658 | ||
0d381245 | 9659 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 9660 | { |
0d381245 | 9661 | struct bp_location *new_loc = |
39d61571 | 9662 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 9663 | |
0d381245 VP |
9664 | /* Reparse conditions, they might contain references to the |
9665 | old symtab. */ | |
9666 | if (b->cond_string != NULL) | |
9667 | { | |
9668 | struct gdb_exception e; | |
fe3f5fa8 | 9669 | |
0d381245 VP |
9670 | s = b->cond_string; |
9671 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9672 | { | |
9673 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
9674 | 0); | |
9675 | } | |
9676 | if (e.reason < 0) | |
9677 | { | |
9678 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
9679 | b->number, e.message); | |
9680 | new_loc->enabled = 0; | |
9681 | } | |
9682 | } | |
fe3f5fa8 | 9683 | |
0d381245 VP |
9684 | if (b->source_file != NULL) |
9685 | xfree (b->source_file); | |
9686 | if (sals.sals[i].symtab == NULL) | |
9687 | b->source_file = NULL; | |
9688 | else | |
1b36a34b | 9689 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 9690 | |
0d381245 VP |
9691 | if (b->line_number == 0) |
9692 | b->line_number = sals.sals[i].line; | |
9693 | } | |
fe3f5fa8 | 9694 | |
514f746b AR |
9695 | /* Update locations of permanent breakpoints. */ |
9696 | if (b->enable_state == bp_permanent) | |
9697 | make_breakpoint_permanent (b); | |
9698 | ||
0d381245 VP |
9699 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
9700 | { | |
9701 | struct bp_location *e = existing_locations; | |
776592bf DE |
9702 | /* If there are multiple breakpoints with the same function name, |
9703 | e.g. for inline functions, comparing function names won't work. | |
9704 | Instead compare pc addresses; this is just a heuristic as things | |
9705 | may have moved, but in practice it gives the correct answer | |
9706 | often enough until a better solution is found. */ | |
9707 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
9708 | ||
0d381245 VP |
9709 | for (; e; e = e->next) |
9710 | { | |
9711 | if (!e->enabled && e->function_name) | |
9712 | { | |
9713 | struct bp_location *l = b->loc; | |
776592bf DE |
9714 | if (have_ambiguous_names) |
9715 | { | |
9716 | for (; l; l = l->next) | |
6c95b8df PA |
9717 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
9718 | l->pspace->aspace, l->address)) | |
776592bf DE |
9719 | { |
9720 | l->enabled = 0; | |
9721 | break; | |
9722 | } | |
9723 | } | |
9724 | else | |
9725 | { | |
9726 | for (; l; l = l->next) | |
9727 | if (l->function_name | |
9728 | && strcmp (e->function_name, l->function_name) == 0) | |
9729 | { | |
9730 | l->enabled = 0; | |
9731 | break; | |
9732 | } | |
9733 | } | |
0d381245 VP |
9734 | } |
9735 | } | |
9736 | } | |
fe3f5fa8 | 9737 | |
b60e7edf | 9738 | update_global_location_list (1); |
fe3f5fa8 VP |
9739 | } |
9740 | ||
9741 | ||
c906108c SS |
9742 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9743 | The value we return ends up being the return value from catch_errors. | |
9744 | Unused in this case. */ | |
9745 | ||
9746 | static int | |
4efb68b1 | 9747 | breakpoint_re_set_one (void *bint) |
c906108c | 9748 | { |
53a5351d JM |
9749 | /* get past catch_errs */ |
9750 | struct breakpoint *b = (struct breakpoint *) bint; | |
fe3f5fa8 VP |
9751 | int not_found = 0; |
9752 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9753 | struct symtabs_and_lines sals = {0}; |
9754 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9755 | char *s; |
fe3f5fa8 | 9756 | struct gdb_exception e; |
6c95b8df | 9757 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9758 | |
9759 | switch (b->type) | |
9760 | { | |
9761 | case bp_none: | |
8a3fe4f8 | 9762 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9763 | b->number); |
c906108c SS |
9764 | return 0; |
9765 | case bp_breakpoint: | |
9766 | case bp_hardware_breakpoint: | |
1042e4c0 | 9767 | case bp_tracepoint: |
7a697b8d | 9768 | case bp_fast_tracepoint: |
8bea4e01 UW |
9769 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9770 | if (b->enable_state == bp_startup_disabled) | |
9771 | return 0; | |
9772 | ||
c906108c SS |
9773 | if (b->addr_string == NULL) |
9774 | { | |
9775 | /* Anything without a string can't be re-set. */ | |
9776 | delete_breakpoint (b); | |
9777 | return 0; | |
9778 | } | |
c906108c SS |
9779 | |
9780 | set_language (b->language); | |
9781 | input_radix = b->input_radix; | |
9782 | s = b->addr_string; | |
6c95b8df PA |
9783 | |
9784 | save_current_space_and_thread (); | |
9785 | switch_to_program_space_and_thread (b->pspace); | |
9786 | ||
fe3f5fa8 | 9787 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9788 | { |
fe3f5fa8 VP |
9789 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9790 | not_found_ptr); | |
9791 | } | |
9792 | if (e.reason < 0) | |
9793 | { | |
9794 | int not_found_and_ok = 0; | |
9795 | /* For pending breakpoints, it's expected that parsing | |
9796 | will fail until the right shared library is loaded. | |
9797 | User has already told to create pending breakpoints and | |
9798 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9799 | state, then user already saw the message about that breakpoint | |
9800 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9801 | if (not_found |
9802 | && (b->condition_not_parsed | |
9803 | || (b->loc && b->loc->shlib_disabled) | |
9804 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9805 | not_found_and_ok = 1; |
9806 | ||
9807 | if (!not_found_and_ok) | |
c906108c | 9808 | { |
fe3f5fa8 VP |
9809 | /* We surely don't want to warn about the same breakpoint |
9810 | 10 times. One solution, implemented here, is disable | |
9811 | the breakpoint on error. Another solution would be to | |
9812 | have separate 'warning emitted' flag. Since this | |
9813 | happens only when a binary has changed, I don't know | |
9814 | which approach is better. */ | |
9815 | b->enable_state = bp_disabled; | |
9816 | throw_exception (e); | |
c906108c | 9817 | } |
fe3f5fa8 | 9818 | } |
c906108c | 9819 | |
6c95b8df | 9820 | if (!not_found) |
fe3f5fa8 | 9821 | { |
6c95b8df PA |
9822 | gdb_assert (sals.nelts == 1); |
9823 | ||
9824 | resolve_sal_pc (&sals.sals[0]); | |
9825 | if (b->condition_not_parsed && s && s[0]) | |
9826 | { | |
9827 | char *cond_string = 0; | |
9828 | int thread = -1; | |
9829 | int task = 0; | |
9830 | ||
9831 | find_condition_and_thread (s, sals.sals[0].pc, | |
9832 | &cond_string, &thread, &task); | |
9833 | if (cond_string) | |
9834 | b->cond_string = cond_string; | |
9835 | b->thread = thread; | |
9836 | b->task = task; | |
9837 | b->condition_not_parsed = 0; | |
9838 | } | |
9839 | ||
9840 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9841 | } |
6c95b8df PA |
9842 | |
9843 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9844 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9845 | break; |
9846 | ||
9847 | case bp_watchpoint: | |
9848 | case bp_hardware_watchpoint: | |
9849 | case bp_read_watchpoint: | |
9850 | case bp_access_watchpoint: | |
0b3de036 VP |
9851 | /* Watchpoint can be either on expression using entirely global variables, |
9852 | or it can be on local variables. | |
9853 | ||
9854 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9855 | across program restarts. Since they can use variables from shared | |
9856 | libraries, we need to reparse expression as libraries are loaded | |
9857 | and unloaded. | |
9858 | ||
9859 | Watchpoints on local variables can also change meaning as result | |
9860 | of solib event. For example, if a watchpoint uses both a local and | |
9861 | a global variables in expression, it's a local watchpoint, but | |
9862 | unloading of a shared library will make the expression invalid. | |
9863 | This is not a very common use case, but we still re-evaluate | |
9864 | expression, to avoid surprises to the user. | |
9865 | ||
9866 | Note that for local watchpoints, we re-evaluate it only if | |
9867 | watchpoints frame id is still valid. If it's not, it means | |
9868 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9869 | I'm not sure we'll ever be called in this case. | |
9870 | ||
9871 | If a local watchpoint's frame id is still valid, then | |
9872 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9873 | ||
9874 | Don't do anything about disabled watchpoints, since they will | |
9875 | be reevaluated again when enabled. */ | |
a5606eee | 9876 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9877 | break; |
c5aa993b JM |
9878 | /* We needn't really do anything to reset these, since the mask |
9879 | that requests them is unaffected by e.g., new libraries being | |
9880 | loaded. */ | |
ce78b96d | 9881 | case bp_catchpoint: |
c906108c | 9882 | break; |
c5aa993b | 9883 | |
c906108c | 9884 | default: |
a3f17187 | 9885 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9886 | /* fall through */ |
0fd8e87f UW |
9887 | /* Delete overlay event and longjmp master breakpoints; they will be |
9888 | reset later by breakpoint_re_set. */ | |
1900040c | 9889 | case bp_overlay_event: |
0fd8e87f | 9890 | case bp_longjmp_master: |
aa7d318d | 9891 | case bp_std_terminate_master: |
c906108c SS |
9892 | delete_breakpoint (b); |
9893 | break; | |
9894 | ||
c5aa993b JM |
9895 | /* This breakpoint is special, it's set up when the inferior |
9896 | starts and we really don't want to touch it. */ | |
c906108c SS |
9897 | case bp_shlib_event: |
9898 | ||
c4093a6a JM |
9899 | /* Like bp_shlib_event, this breakpoint type is special. |
9900 | Once it is set up, we do not want to touch it. */ | |
9901 | case bp_thread_event: | |
9902 | ||
c5aa993b JM |
9903 | /* Keep temporary breakpoints, which can be encountered when we step |
9904 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9905 | Otherwise these should have been blown away via the cleanup chain | |
9906 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9907 | case bp_until: |
9908 | case bp_finish: | |
9909 | case bp_watchpoint_scope: | |
9910 | case bp_call_dummy: | |
aa7d318d | 9911 | case bp_std_terminate: |
c906108c | 9912 | case bp_step_resume: |
611c83ae PA |
9913 | case bp_longjmp: |
9914 | case bp_longjmp_resume: | |
4efc6507 | 9915 | case bp_jit_event: |
c906108c SS |
9916 | break; |
9917 | } | |
9918 | ||
6c95b8df | 9919 | do_cleanups (cleanups); |
c906108c SS |
9920 | return 0; |
9921 | } | |
9922 | ||
69de3c6a | 9923 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9924 | void |
69de3c6a | 9925 | breakpoint_re_set (void) |
c906108c SS |
9926 | { |
9927 | struct breakpoint *b, *temp; | |
9928 | enum language save_language; | |
9929 | int save_input_radix; | |
6c95b8df | 9930 | struct cleanup *old_chain; |
c5aa993b | 9931 | |
c906108c SS |
9932 | save_language = current_language->la_language; |
9933 | save_input_radix = input_radix; | |
6c95b8df PA |
9934 | old_chain = save_current_program_space (); |
9935 | ||
c906108c | 9936 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9937 | { |
53a5351d | 9938 | /* Format possible error msg */ |
fe3f5fa8 | 9939 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9940 | b->number); |
9941 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9942 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9943 | do_cleanups (cleanups); |
c5aa993b | 9944 | } |
c906108c SS |
9945 | set_language (save_language); |
9946 | input_radix = save_input_radix; | |
e62c965a | 9947 | |
0756c555 | 9948 | jit_breakpoint_re_set (); |
4efc6507 | 9949 | |
6c95b8df PA |
9950 | do_cleanups (old_chain); |
9951 | ||
69de3c6a | 9952 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9953 | create_longjmp_master_breakpoint ("longjmp"); |
9954 | create_longjmp_master_breakpoint ("_longjmp"); | |
9955 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9956 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 9957 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
9958 | } |
9959 | \f | |
c906108c SS |
9960 | /* Reset the thread number of this breakpoint: |
9961 | ||
9962 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9963 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9964 | void |
fba45db2 | 9965 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9966 | { |
9967 | if (b->thread != -1) | |
9968 | { | |
39f77062 KB |
9969 | if (in_thread_list (inferior_ptid)) |
9970 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9971 | |
9972 | /* We're being called after following a fork. The new fork is | |
9973 | selected as current, and unless this was a vfork will have a | |
9974 | different program space from the original thread. Reset that | |
9975 | as well. */ | |
9976 | b->loc->pspace = current_program_space; | |
c906108c SS |
9977 | } |
9978 | } | |
9979 | ||
03ac34d5 MS |
9980 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9981 | If from_tty is nonzero, it prints a message to that effect, | |
9982 | which ends with a period (no newline). */ | |
9983 | ||
c906108c | 9984 | void |
fba45db2 | 9985 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9986 | { |
52f0bd74 | 9987 | struct breakpoint *b; |
c906108c SS |
9988 | |
9989 | if (count < 0) | |
9990 | count = 0; | |
9991 | ||
9992 | ALL_BREAKPOINTS (b) | |
9993 | if (b->number == bptnum) | |
c5aa993b | 9994 | { |
d77f58be SS |
9995 | if (is_tracepoint (b)) |
9996 | { | |
9997 | if (from_tty && count != 0) | |
9998 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
9999 | bptnum); | |
10000 | return; | |
10001 | } | |
10002 | ||
c5aa993b | 10003 | b->ignore_count = count; |
221ea385 KS |
10004 | if (from_tty) |
10005 | { | |
10006 | if (count == 0) | |
a3f17187 | 10007 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
10008 | bptnum); |
10009 | else if (count == 1) | |
a3f17187 | 10010 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10011 | bptnum); |
10012 | else | |
a3f17187 | 10013 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
10014 | count, bptnum); |
10015 | } | |
c5aa993b | 10016 | breakpoints_changed (); |
383f836e | 10017 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10018 | return; |
10019 | } | |
c906108c | 10020 | |
8a3fe4f8 | 10021 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10022 | } |
10023 | ||
b2175913 MS |
10024 | void |
10025 | make_breakpoint_silent (struct breakpoint *b) | |
10026 | { | |
10027 | /* Silence the breakpoint. */ | |
10028 | b->silent = 1; | |
10029 | } | |
10030 | ||
c906108c SS |
10031 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10032 | ||
10033 | static void | |
fba45db2 | 10034 | ignore_command (char *args, int from_tty) |
c906108c SS |
10035 | { |
10036 | char *p = args; | |
52f0bd74 | 10037 | int num; |
c906108c SS |
10038 | |
10039 | if (p == 0) | |
e2e0b3e5 | 10040 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10041 | |
c906108c | 10042 | num = get_number (&p); |
5c44784c | 10043 | if (num == 0) |
8a3fe4f8 | 10044 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10045 | if (*p == 0) |
8a3fe4f8 | 10046 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10047 | |
10048 | set_ignore_count (num, | |
10049 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10050 | from_tty); | |
221ea385 KS |
10051 | if (from_tty) |
10052 | printf_filtered ("\n"); | |
c906108c SS |
10053 | } |
10054 | \f | |
10055 | /* Call FUNCTION on each of the breakpoints | |
10056 | whose numbers are given in ARGS. */ | |
10057 | ||
10058 | static void | |
95a42b64 TT |
10059 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10060 | void *), | |
10061 | void *data) | |
c906108c | 10062 | { |
52f0bd74 | 10063 | char *p = args; |
c906108c | 10064 | char *p1; |
52f0bd74 AC |
10065 | int num; |
10066 | struct breakpoint *b, *tmp; | |
11cf8741 | 10067 | int match; |
c906108c SS |
10068 | |
10069 | if (p == 0) | |
e2e0b3e5 | 10070 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
10071 | |
10072 | while (*p) | |
10073 | { | |
11cf8741 | 10074 | match = 0; |
c906108c | 10075 | p1 = p; |
c5aa993b | 10076 | |
5c44784c JM |
10077 | num = get_number_or_range (&p1); |
10078 | if (num == 0) | |
c5aa993b | 10079 | { |
8a3fe4f8 | 10080 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10081 | } |
10082 | else | |
10083 | { | |
10084 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10085 | if (b->number == num) | |
10086 | { | |
10087 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 10088 | match = 1; |
95a42b64 | 10089 | function (b, data); |
5c44784c | 10090 | if (related_breakpoint) |
95a42b64 | 10091 | function (related_breakpoint, data); |
11cf8741 | 10092 | break; |
5c44784c | 10093 | } |
11cf8741 | 10094 | if (match == 0) |
a3f17187 | 10095 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10096 | } |
c906108c SS |
10097 | p = p1; |
10098 | } | |
10099 | } | |
10100 | ||
0d381245 VP |
10101 | static struct bp_location * |
10102 | find_location_by_number (char *number) | |
10103 | { | |
10104 | char *dot = strchr (number, '.'); | |
10105 | char *p1; | |
10106 | int bp_num; | |
10107 | int loc_num; | |
10108 | struct breakpoint *b; | |
10109 | struct bp_location *loc; | |
10110 | ||
10111 | *dot = '\0'; | |
10112 | ||
10113 | p1 = number; | |
10114 | bp_num = get_number_or_range (&p1); | |
10115 | if (bp_num == 0) | |
10116 | error (_("Bad breakpoint number '%s'"), number); | |
10117 | ||
10118 | ALL_BREAKPOINTS (b) | |
10119 | if (b->number == bp_num) | |
10120 | { | |
10121 | break; | |
10122 | } | |
10123 | ||
10124 | if (!b || b->number != bp_num) | |
10125 | error (_("Bad breakpoint number '%s'"), number); | |
10126 | ||
10127 | p1 = dot+1; | |
10128 | loc_num = get_number_or_range (&p1); | |
10129 | if (loc_num == 0) | |
10130 | error (_("Bad breakpoint location number '%s'"), number); | |
10131 | ||
10132 | --loc_num; | |
10133 | loc = b->loc; | |
10134 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
10135 | ; | |
10136 | if (!loc) | |
10137 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
10138 | ||
10139 | return loc; | |
10140 | } | |
10141 | ||
10142 | ||
1900040c MS |
10143 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10144 | If from_tty is nonzero, it prints a message to that effect, | |
10145 | which ends with a period (no newline). */ | |
10146 | ||
c906108c | 10147 | void |
fba45db2 | 10148 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10149 | { |
10150 | /* Never disable a watchpoint scope breakpoint; we want to | |
10151 | hit them when we leave scope so we can delete both the | |
10152 | watchpoint and its scope breakpoint at that time. */ | |
10153 | if (bpt->type == bp_watchpoint_scope) | |
10154 | return; | |
10155 | ||
c2c6d25f | 10156 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 10157 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
10158 | return; |
10159 | ||
b5de0fa7 | 10160 | bpt->enable_state = bp_disabled; |
c906108c | 10161 | |
b60e7edf | 10162 | update_global_location_list (0); |
c906108c | 10163 | |
383f836e | 10164 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10165 | } |
10166 | ||
95a42b64 TT |
10167 | /* A callback for map_breakpoint_numbers that calls |
10168 | disable_breakpoint. */ | |
10169 | ||
10170 | static void | |
10171 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
10172 | { | |
10173 | disable_breakpoint (b); | |
10174 | } | |
10175 | ||
c906108c | 10176 | static void |
fba45db2 | 10177 | disable_command (char *args, int from_tty) |
c906108c | 10178 | { |
52f0bd74 | 10179 | struct breakpoint *bpt; |
cc59ec59 | 10180 | |
c906108c SS |
10181 | if (args == 0) |
10182 | ALL_BREAKPOINTS (bpt) | |
10183 | switch (bpt->type) | |
c5aa993b JM |
10184 | { |
10185 | case bp_none: | |
8a3fe4f8 | 10186 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10187 | bpt->number); |
c5aa993b JM |
10188 | continue; |
10189 | case bp_breakpoint: | |
1042e4c0 | 10190 | case bp_tracepoint: |
7a697b8d | 10191 | case bp_fast_tracepoint: |
ce78b96d | 10192 | case bp_catchpoint: |
c5aa993b JM |
10193 | case bp_hardware_breakpoint: |
10194 | case bp_watchpoint: | |
10195 | case bp_hardware_watchpoint: | |
10196 | case bp_read_watchpoint: | |
10197 | case bp_access_watchpoint: | |
10198 | disable_breakpoint (bpt); | |
10199 | default: | |
10200 | continue; | |
10201 | } | |
0d381245 VP |
10202 | else if (strchr (args, '.')) |
10203 | { | |
10204 | struct bp_location *loc = find_location_by_number (args); | |
10205 | if (loc) | |
10206 | loc->enabled = 0; | |
b60e7edf | 10207 | update_global_location_list (0); |
0d381245 | 10208 | } |
c906108c | 10209 | else |
95a42b64 | 10210 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10211 | } |
10212 | ||
10213 | static void | |
fba45db2 | 10214 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10215 | { |
afe38095 | 10216 | int target_resources_ok; |
c906108c SS |
10217 | |
10218 | if (bpt->type == bp_hardware_breakpoint) | |
10219 | { | |
10220 | int i; | |
c5aa993b | 10221 | i = hw_breakpoint_used_count (); |
53a5351d | 10222 | target_resources_ok = |
d92524f1 | 10223 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10224 | i + 1, 0); |
c906108c | 10225 | if (target_resources_ok == 0) |
8a3fe4f8 | 10226 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10227 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10228 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10229 | } |
10230 | ||
cc60f2e3 | 10231 | if (is_watchpoint (bpt)) |
c906108c | 10232 | { |
dde02812 ES |
10233 | struct gdb_exception e; |
10234 | ||
10235 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10236 | { |
dde02812 | 10237 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10238 | } |
dde02812 | 10239 | if (e.reason < 0) |
c5aa993b | 10240 | { |
dde02812 ES |
10241 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10242 | bpt->number); | |
10243 | return; | |
c5aa993b | 10244 | } |
c906108c | 10245 | } |
0101ce28 | 10246 | |
b4c291bb KH |
10247 | if (bpt->enable_state != bp_permanent) |
10248 | bpt->enable_state = bp_enabled; | |
10249 | bpt->disposition = disposition; | |
b60e7edf | 10250 | update_global_location_list (1); |
b4c291bb KH |
10251 | breakpoints_changed (); |
10252 | ||
383f836e | 10253 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10254 | } |
10255 | ||
fe3f5fa8 | 10256 | |
c906108c | 10257 | void |
fba45db2 | 10258 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10259 | { |
10260 | do_enable_breakpoint (bpt, bpt->disposition); | |
10261 | } | |
10262 | ||
95a42b64 TT |
10263 | /* A callback for map_breakpoint_numbers that calls |
10264 | enable_breakpoint. */ | |
10265 | ||
10266 | static void | |
10267 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10268 | { | |
10269 | enable_breakpoint (b); | |
10270 | } | |
10271 | ||
c906108c SS |
10272 | /* The enable command enables the specified breakpoints (or all defined |
10273 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10274 | in stopping the inferior. */ |
c906108c | 10275 | |
c906108c | 10276 | static void |
fba45db2 | 10277 | enable_command (char *args, int from_tty) |
c906108c | 10278 | { |
52f0bd74 | 10279 | struct breakpoint *bpt; |
cc59ec59 | 10280 | |
c906108c SS |
10281 | if (args == 0) |
10282 | ALL_BREAKPOINTS (bpt) | |
10283 | switch (bpt->type) | |
c5aa993b JM |
10284 | { |
10285 | case bp_none: | |
8a3fe4f8 | 10286 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10287 | bpt->number); |
c5aa993b JM |
10288 | continue; |
10289 | case bp_breakpoint: | |
1042e4c0 | 10290 | case bp_tracepoint: |
7a697b8d | 10291 | case bp_fast_tracepoint: |
ce78b96d | 10292 | case bp_catchpoint: |
c5aa993b JM |
10293 | case bp_hardware_breakpoint: |
10294 | case bp_watchpoint: | |
10295 | case bp_hardware_watchpoint: | |
10296 | case bp_read_watchpoint: | |
10297 | case bp_access_watchpoint: | |
10298 | enable_breakpoint (bpt); | |
10299 | default: | |
10300 | continue; | |
10301 | } | |
0d381245 VP |
10302 | else if (strchr (args, '.')) |
10303 | { | |
10304 | struct bp_location *loc = find_location_by_number (args); | |
10305 | if (loc) | |
10306 | loc->enabled = 1; | |
b60e7edf | 10307 | update_global_location_list (1); |
0d381245 | 10308 | } |
c906108c | 10309 | else |
95a42b64 | 10310 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10311 | } |
10312 | ||
10313 | static void | |
95a42b64 | 10314 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10315 | { |
b5de0fa7 | 10316 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10317 | } |
10318 | ||
c906108c | 10319 | static void |
fba45db2 | 10320 | enable_once_command (char *args, int from_tty) |
c906108c | 10321 | { |
95a42b64 | 10322 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10323 | } |
10324 | ||
10325 | static void | |
95a42b64 | 10326 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10327 | { |
b5de0fa7 | 10328 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10329 | } |
10330 | ||
c906108c | 10331 | static void |
fba45db2 | 10332 | enable_delete_command (char *args, int from_tty) |
c906108c | 10333 | { |
95a42b64 | 10334 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10335 | } |
10336 | \f | |
fa8d40ab JJ |
10337 | static void |
10338 | set_breakpoint_cmd (char *args, int from_tty) | |
10339 | { | |
10340 | } | |
10341 | ||
10342 | static void | |
10343 | show_breakpoint_cmd (char *args, int from_tty) | |
10344 | { | |
10345 | } | |
10346 | ||
1f3b5d1b PP |
10347 | /* Invalidate last known value of any hardware watchpoint if |
10348 | the memory which that value represents has been written to by | |
10349 | GDB itself. */ | |
10350 | ||
10351 | static void | |
10352 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10353 | const bfd_byte *data) | |
10354 | { | |
10355 | struct breakpoint *bp; | |
10356 | ||
10357 | ALL_BREAKPOINTS (bp) | |
10358 | if (bp->enable_state == bp_enabled | |
10359 | && bp->type == bp_hardware_watchpoint | |
10360 | && bp->val_valid && bp->val) | |
10361 | { | |
10362 | struct bp_location *loc; | |
10363 | ||
10364 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10365 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10366 | && loc->address + loc->length > addr | |
10367 | && addr + len > loc->address) | |
10368 | { | |
10369 | value_free (bp->val); | |
10370 | bp->val = NULL; | |
10371 | bp->val_valid = 0; | |
10372 | } | |
10373 | } | |
10374 | } | |
10375 | ||
c906108c SS |
10376 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10377 | ||
10378 | struct symtabs_and_lines | |
fba45db2 | 10379 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10380 | { |
10381 | struct symtabs_and_lines sals; | |
cc59ec59 | 10382 | |
c906108c | 10383 | if (string == 0) |
8a3fe4f8 | 10384 | error (_("Empty line specification.")); |
c906108c SS |
10385 | if (default_breakpoint_valid) |
10386 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10387 | default_breakpoint_symtab, |
10388 | default_breakpoint_line, | |
68219205 | 10389 | (char ***) NULL, NULL); |
c906108c SS |
10390 | else |
10391 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10392 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10393 | if (*string) |
8a3fe4f8 | 10394 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10395 | return sals; |
10396 | } | |
8181d85f DJ |
10397 | |
10398 | /* Create and insert a raw software breakpoint at PC. Return an | |
10399 | identifier, which should be used to remove the breakpoint later. | |
10400 | In general, places which call this should be using something on the | |
10401 | breakpoint chain instead; this function should be eliminated | |
10402 | someday. */ | |
10403 | ||
10404 | void * | |
6c95b8df PA |
10405 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10406 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10407 | { |
10408 | struct bp_target_info *bp_tgt; | |
10409 | ||
6c95b8df | 10410 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10411 | |
6c95b8df | 10412 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10413 | bp_tgt->placed_address = pc; |
6c95b8df | 10414 | |
a6d9a66e | 10415 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10416 | { |
10417 | /* Could not insert the breakpoint. */ | |
10418 | xfree (bp_tgt); | |
10419 | return NULL; | |
10420 | } | |
10421 | ||
10422 | return bp_tgt; | |
10423 | } | |
10424 | ||
10425 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
10426 | ||
10427 | int | |
a6d9a66e | 10428 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
10429 | { |
10430 | struct bp_target_info *bp_tgt = bp; | |
10431 | int ret; | |
10432 | ||
a6d9a66e | 10433 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
10434 | xfree (bp_tgt); |
10435 | ||
10436 | return ret; | |
10437 | } | |
10438 | ||
10439 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
10440 | ||
10441 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 10442 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
10443 | |
10444 | /* Create and insert a breakpoint for software single step. */ | |
10445 | ||
10446 | void | |
6c95b8df PA |
10447 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
10448 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
10449 | { |
10450 | void **bpt_p; | |
10451 | ||
10452 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
10453 | { |
10454 | bpt_p = &single_step_breakpoints[0]; | |
10455 | single_step_gdbarch[0] = gdbarch; | |
10456 | } | |
8181d85f DJ |
10457 | else |
10458 | { | |
10459 | gdb_assert (single_step_breakpoints[1] == NULL); | |
10460 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 10461 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
10462 | } |
10463 | ||
10464 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
10465 | to only create the breakpoints once, and actually put them on the | |
10466 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
10467 | adjust the addresses each time they were needed. Doing this requires | |
10468 | corresponding changes elsewhere where single step breakpoints are | |
10469 | handled, however. So, for now, we use this. */ | |
10470 | ||
6c95b8df | 10471 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 10472 | if (*bpt_p == NULL) |
5af949e3 UW |
10473 | error (_("Could not insert single-step breakpoint at %s"), |
10474 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
10475 | } |
10476 | ||
10477 | /* Remove and delete any breakpoints used for software single step. */ | |
10478 | ||
10479 | void | |
10480 | remove_single_step_breakpoints (void) | |
10481 | { | |
10482 | gdb_assert (single_step_breakpoints[0] != NULL); | |
10483 | ||
10484 | /* See insert_single_step_breakpoint for more about this deprecated | |
10485 | call. */ | |
a6d9a66e UW |
10486 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
10487 | single_step_breakpoints[0]); | |
10488 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
10489 | single_step_breakpoints[0] = NULL; |
10490 | ||
10491 | if (single_step_breakpoints[1] != NULL) | |
10492 | { | |
a6d9a66e UW |
10493 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
10494 | single_step_breakpoints[1]); | |
10495 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
10496 | single_step_breakpoints[1] = NULL; |
10497 | } | |
10498 | } | |
10499 | ||
d03285ec UW |
10500 | /* Delete software single step breakpoints without removing them from |
10501 | the inferior. This is intended to be used if the inferior's address | |
10502 | space where they were inserted is already gone, e.g. after exit or | |
10503 | exec. */ | |
10504 | ||
10505 | void | |
10506 | cancel_single_step_breakpoints (void) | |
10507 | { | |
10508 | int i; | |
10509 | ||
10510 | for (i = 0; i < 2; i++) | |
10511 | if (single_step_breakpoints[i]) | |
10512 | { | |
10513 | xfree (single_step_breakpoints[i]); | |
10514 | single_step_breakpoints[i] = NULL; | |
10515 | single_step_gdbarch[i] = NULL; | |
10516 | } | |
10517 | } | |
10518 | ||
10519 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
10520 | removing them. */ | |
10521 | ||
10522 | static void | |
10523 | detach_single_step_breakpoints (void) | |
10524 | { | |
10525 | int i; | |
10526 | ||
10527 | for (i = 0; i < 2; i++) | |
10528 | if (single_step_breakpoints[i]) | |
10529 | target_remove_breakpoint (single_step_gdbarch[i], | |
10530 | single_step_breakpoints[i]); | |
10531 | } | |
10532 | ||
1aafd4da UW |
10533 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
10534 | ||
10535 | static int | |
cc59ec59 MS |
10536 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
10537 | CORE_ADDR pc) | |
1aafd4da UW |
10538 | { |
10539 | int i; | |
10540 | ||
10541 | for (i = 0; i < 2; i++) | |
10542 | { | |
10543 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
10544 | if (bp_tgt |
10545 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
10546 | bp_tgt->placed_address, | |
10547 | aspace, pc)) | |
1aafd4da UW |
10548 | return 1; |
10549 | } | |
10550 | ||
10551 | return 0; | |
10552 | } | |
10553 | ||
a96d9b2e SDJ |
10554 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
10555 | non-zero otherwise. */ | |
10556 | static int | |
10557 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
10558 | { | |
10559 | if (syscall_catchpoint_p (bp) | |
10560 | && bp->enable_state != bp_disabled | |
10561 | && bp->enable_state != bp_call_disabled) | |
10562 | return 1; | |
10563 | else | |
10564 | return 0; | |
10565 | } | |
10566 | ||
10567 | int | |
10568 | catch_syscall_enabled (void) | |
10569 | { | |
10570 | struct inferior *inf = current_inferior (); | |
10571 | ||
10572 | return inf->total_syscalls_count != 0; | |
10573 | } | |
10574 | ||
10575 | int | |
10576 | catching_syscall_number (int syscall_number) | |
10577 | { | |
10578 | struct breakpoint *bp; | |
10579 | ||
10580 | ALL_BREAKPOINTS (bp) | |
10581 | if (is_syscall_catchpoint_enabled (bp)) | |
10582 | { | |
10583 | if (bp->syscalls_to_be_caught) | |
10584 | { | |
10585 | int i, iter; | |
10586 | for (i = 0; | |
10587 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
10588 | i++) | |
10589 | if (syscall_number == iter) | |
10590 | return 1; | |
10591 | } | |
10592 | else | |
10593 | return 1; | |
10594 | } | |
10595 | ||
10596 | return 0; | |
10597 | } | |
10598 | ||
10599 | /* Complete syscall names. Used by "catch syscall". */ | |
10600 | static char ** | |
10601 | catch_syscall_completer (struct cmd_list_element *cmd, | |
10602 | char *text, char *word) | |
10603 | { | |
10604 | const char **list = get_syscall_names (); | |
cc59ec59 | 10605 | |
a96d9b2e SDJ |
10606 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); |
10607 | } | |
10608 | ||
1042e4c0 SS |
10609 | /* Tracepoint-specific operations. */ |
10610 | ||
10611 | /* Set tracepoint count to NUM. */ | |
10612 | static void | |
10613 | set_tracepoint_count (int num) | |
10614 | { | |
10615 | tracepoint_count = num; | |
4fa62494 | 10616 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
10617 | } |
10618 | ||
10619 | void | |
10620 | trace_command (char *arg, int from_tty) | |
10621 | { | |
8cdf0e15 VP |
10622 | if (create_breakpoint (get_current_arch (), |
10623 | arg, | |
10624 | NULL, 0, 1 /* parse arg */, | |
10625 | 0 /* tempflag */, 0 /* hardwareflag */, | |
10626 | 1 /* traceflag */, | |
10627 | 0 /* Ignore count */, | |
10628 | pending_break_support, | |
10629 | NULL, | |
10630 | from_tty, | |
10631 | 1 /* enabled */)) | |
fd9b8c24 | 10632 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
10633 | } |
10634 | ||
7a697b8d SS |
10635 | void |
10636 | ftrace_command (char *arg, int from_tty) | |
10637 | { | |
8cdf0e15 VP |
10638 | if (create_breakpoint (get_current_arch (), |
10639 | arg, | |
10640 | NULL, 0, 1 /* parse arg */, | |
10641 | 0 /* tempflag */, 1 /* hardwareflag */, | |
10642 | 1 /* traceflag */, | |
10643 | 0 /* Ignore count */, | |
10644 | pending_break_support, | |
10645 | NULL, | |
10646 | from_tty, | |
10647 | 1 /* enabled */)) | |
fd9b8c24 | 10648 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
10649 | } |
10650 | ||
409873ef SS |
10651 | /* Set up a fake reader function that gets command lines from a linked |
10652 | list that was acquired during tracepoint uploading. */ | |
10653 | ||
10654 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 10655 | static int next_cmd; |
409873ef SS |
10656 | |
10657 | static char * | |
10658 | read_uploaded_action (void) | |
10659 | { | |
10660 | char *rslt; | |
10661 | ||
3149d8c1 | 10662 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 10663 | |
3149d8c1 | 10664 | next_cmd++; |
409873ef SS |
10665 | |
10666 | return rslt; | |
10667 | } | |
10668 | ||
00bf0b85 SS |
10669 | /* Given information about a tracepoint as recorded on a target (which |
10670 | can be either a live system or a trace file), attempt to create an | |
10671 | equivalent GDB tracepoint. This is not a reliable process, since | |
10672 | the target does not necessarily have all the information used when | |
10673 | the tracepoint was originally defined. */ | |
10674 | ||
10675 | struct breakpoint * | |
10676 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 10677 | { |
409873ef | 10678 | char *addr_str, small_buf[100]; |
d5551862 | 10679 | struct breakpoint *tp; |
fd9b8c24 | 10680 | |
409873ef SS |
10681 | if (utp->at_string) |
10682 | addr_str = utp->at_string; | |
10683 | else | |
10684 | { | |
10685 | /* In the absence of a source location, fall back to raw | |
10686 | address. Since there is no way to confirm that the address | |
10687 | means the same thing as when the trace was started, warn the | |
10688 | user. */ | |
10689 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
10690 | utp->number); | |
10691 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
10692 | addr_str = small_buf; | |
10693 | } | |
10694 | ||
10695 | /* There's not much we can do with a sequence of bytecodes. */ | |
10696 | if (utp->cond && !utp->cond_string) | |
10697 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
10698 | utp->number); | |
d5551862 | 10699 | |
8cdf0e15 | 10700 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
10701 | addr_str, |
10702 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 VP |
10703 | 0 /* tempflag */, |
10704 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
10705 | 1 /* traceflag */, | |
10706 | 0 /* Ignore count */, | |
10707 | pending_break_support, | |
10708 | NULL, | |
10709 | 0 /* from_tty */, | |
10710 | utp->enabled /* enabled */)) | |
fd9b8c24 PA |
10711 | return NULL; |
10712 | ||
00bf0b85 SS |
10713 | set_tracepoint_count (breakpoint_count); |
10714 | ||
409873ef | 10715 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
10716 | tp = get_tracepoint (tracepoint_count); |
10717 | gdb_assert (tp != NULL); | |
d5551862 | 10718 | |
00bf0b85 SS |
10719 | if (utp->pass > 0) |
10720 | { | |
409873ef | 10721 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 10722 | |
409873ef | 10723 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
10724 | } |
10725 | ||
409873ef SS |
10726 | /* If we have uploaded versions of the original commands, set up a |
10727 | special-purpose "reader" function and call the usual command line | |
10728 | reader, then pass the result to the breakpoint command-setting | |
10729 | function. */ | |
3149d8c1 | 10730 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 10731 | { |
409873ef | 10732 | struct command_line *cmd_list; |
00bf0b85 | 10733 | |
409873ef | 10734 | this_utp = utp; |
3149d8c1 | 10735 | next_cmd = 0; |
d5551862 | 10736 | |
409873ef SS |
10737 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
10738 | ||
10739 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 10740 | } |
3149d8c1 SS |
10741 | else if (!VEC_empty (char_ptr, utp->actions) |
10742 | || !VEC_empty (char_ptr, utp->step_actions)) | |
409873ef SS |
10743 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), |
10744 | utp->number); | |
00bf0b85 SS |
10745 | |
10746 | return tp; | |
10747 | } | |
10748 | ||
1042e4c0 SS |
10749 | /* Print information on tracepoint number TPNUM_EXP, or all if |
10750 | omitted. */ | |
10751 | ||
10752 | static void | |
10753 | tracepoints_info (char *tpnum_exp, int from_tty) | |
10754 | { | |
d77f58be SS |
10755 | int tpnum = -1, num_printed; |
10756 | ||
10757 | if (tpnum_exp) | |
10758 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 10759 | |
d77f58be SS |
10760 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
10761 | ||
10762 | if (num_printed == 0) | |
1042e4c0 | 10763 | { |
d77f58be SS |
10764 | if (tpnum == -1) |
10765 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
10766 | else | |
10767 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 10768 | } |
ad443146 SS |
10769 | |
10770 | default_collect_info (); | |
1042e4c0 SS |
10771 | } |
10772 | ||
10773 | /* The 'enable trace' command enables tracepoints. | |
10774 | Not supported by all targets. */ | |
10775 | static void | |
10776 | enable_trace_command (char *args, int from_tty) | |
10777 | { | |
10778 | enable_command (args, from_tty); | |
10779 | } | |
10780 | ||
10781 | /* The 'disable trace' command disables tracepoints. | |
10782 | Not supported by all targets. */ | |
10783 | static void | |
10784 | disable_trace_command (char *args, int from_tty) | |
10785 | { | |
10786 | disable_command (args, from_tty); | |
10787 | } | |
10788 | ||
10789 | /* Remove a tracepoint (or all if no argument) */ | |
10790 | static void | |
10791 | delete_trace_command (char *arg, int from_tty) | |
10792 | { | |
10793 | struct breakpoint *b, *temp; | |
10794 | ||
10795 | dont_repeat (); | |
10796 | ||
10797 | if (arg == 0) | |
10798 | { | |
10799 | int breaks_to_delete = 0; | |
10800 | ||
10801 | /* Delete all breakpoints if no argument. | |
10802 | Do not delete internal or call-dummy breakpoints, these | |
10803 | have to be deleted with an explicit breakpoint number argument. */ | |
10804 | ALL_TRACEPOINTS (b) | |
10805 | { | |
10806 | if (b->number >= 0) | |
10807 | { | |
10808 | breaks_to_delete = 1; | |
10809 | break; | |
10810 | } | |
10811 | } | |
10812 | ||
10813 | /* Ask user only if there are some breakpoints to delete. */ | |
10814 | if (!from_tty | |
10815 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
10816 | { | |
10817 | ALL_BREAKPOINTS_SAFE (b, temp) | |
10818 | { | |
d77f58be | 10819 | if (is_tracepoint (b) |
059fb39f | 10820 | && b->number >= 0) |
1042e4c0 SS |
10821 | delete_breakpoint (b); |
10822 | } | |
10823 | } | |
10824 | } | |
10825 | else | |
95a42b64 | 10826 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
10827 | } |
10828 | ||
10829 | /* Set passcount for tracepoint. | |
10830 | ||
10831 | First command argument is passcount, second is tracepoint number. | |
10832 | If tracepoint number omitted, apply to most recently defined. | |
10833 | Also accepts special argument "all". */ | |
10834 | ||
10835 | static void | |
10836 | trace_pass_command (char *args, int from_tty) | |
10837 | { | |
10838 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10839 | unsigned int count; | |
10840 | int all = 0; | |
10841 | ||
10842 | if (args == 0 || *args == 0) | |
10843 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10844 | ||
10845 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10846 | ||
10847 | while (*args && isspace ((int) *args)) | |
10848 | args++; | |
10849 | ||
10850 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10851 | { | |
10852 | args += 3; /* Skip special argument "all". */ | |
10853 | all = 1; | |
10854 | if (*args) | |
10855 | error (_("Junk at end of arguments.")); | |
10856 | } | |
10857 | else | |
10858 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10859 | ||
10860 | do | |
10861 | { | |
10862 | if (t1) | |
10863 | { | |
10864 | ALL_TRACEPOINTS (t2) | |
10865 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10866 | { | |
10867 | t2->pass_count = count; | |
10868 | observer_notify_tracepoint_modified (t2->number); | |
10869 | if (from_tty) | |
10870 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10871 | t2->number, count); | |
10872 | } | |
10873 | if (! all && *args) | |
10874 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10875 | } | |
10876 | } | |
10877 | while (*args); | |
10878 | } | |
10879 | ||
10880 | struct breakpoint * | |
10881 | get_tracepoint (int num) | |
10882 | { | |
10883 | struct breakpoint *t; | |
10884 | ||
10885 | ALL_TRACEPOINTS (t) | |
10886 | if (t->number == num) | |
10887 | return t; | |
10888 | ||
10889 | return NULL; | |
10890 | } | |
10891 | ||
d5551862 SS |
10892 | /* Find the tracepoint with the given target-side number (which may be |
10893 | different from the tracepoint number after disconnecting and | |
10894 | reconnecting). */ | |
10895 | ||
10896 | struct breakpoint * | |
10897 | get_tracepoint_by_number_on_target (int num) | |
10898 | { | |
10899 | struct breakpoint *t; | |
10900 | ||
10901 | ALL_TRACEPOINTS (t) | |
10902 | if (t->number_on_target == num) | |
10903 | return t; | |
10904 | ||
10905 | return NULL; | |
10906 | } | |
10907 | ||
1042e4c0 SS |
10908 | /* Utility: parse a tracepoint number and look it up in the list. |
10909 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10910 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10911 | recent tracepoint (tracepoint_count) is returned. */ | |
10912 | struct breakpoint * | |
10913 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10914 | { | |
10915 | extern int tracepoint_count; | |
10916 | struct breakpoint *t; | |
10917 | int tpnum; | |
10918 | char *instring = arg == NULL ? NULL : *arg; | |
10919 | ||
10920 | if (arg == NULL || *arg == NULL || ! **arg) | |
10921 | { | |
10922 | if (optional_p) | |
10923 | tpnum = tracepoint_count; | |
10924 | else | |
10925 | error_no_arg (_("tracepoint number")); | |
10926 | } | |
10927 | else | |
10928 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10929 | ||
10930 | if (tpnum <= 0) | |
10931 | { | |
10932 | if (instring && *instring) | |
10933 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10934 | instring); | |
10935 | else | |
10936 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10937 | return NULL; | |
10938 | } | |
10939 | ||
10940 | ALL_TRACEPOINTS (t) | |
10941 | if (t->number == tpnum) | |
10942 | { | |
10943 | return t; | |
10944 | } | |
10945 | ||
10946 | /* FIXME: if we are in the middle of a range we don't want to give | |
10947 | a message. The current interface to get_number_or_range doesn't | |
10948 | allow us to discover this. */ | |
10949 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10950 | return NULL; | |
10951 | } | |
10952 | ||
6149aea9 PA |
10953 | /* Save information on user settable breakpoints (watchpoints, etc) to |
10954 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
10955 | on each breakpoint and only include the ones for which it returns | |
10956 | non-zero. */ | |
10957 | ||
1042e4c0 | 10958 | static void |
6149aea9 PA |
10959 | save_breakpoints (char *filename, int from_tty, |
10960 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
10961 | { |
10962 | struct breakpoint *tp; | |
6149aea9 | 10963 | int any = 0; |
a7bdde9e | 10964 | char *pathname; |
1042e4c0 | 10965 | struct cleanup *cleanup; |
a7bdde9e | 10966 | struct ui_file *fp; |
6149aea9 | 10967 | int extra_trace_bits = 0; |
1042e4c0 | 10968 | |
6149aea9 PA |
10969 | if (filename == 0 || *filename == 0) |
10970 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
10971 | |
10972 | /* See if we have anything to save. */ | |
6149aea9 | 10973 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 10974 | { |
6149aea9 PA |
10975 | /* Skip internal and momentary breakpoints. */ |
10976 | if (!user_settable_breakpoint (tp)) | |
10977 | continue; | |
10978 | ||
10979 | /* If we have a filter, only save the breakpoints it accepts. */ | |
10980 | if (filter && !filter (tp)) | |
10981 | continue; | |
10982 | ||
10983 | any = 1; | |
10984 | ||
10985 | if (is_tracepoint (tp)) | |
10986 | { | |
10987 | extra_trace_bits = 1; | |
10988 | ||
10989 | /* We can stop searching. */ | |
10990 | break; | |
10991 | } | |
1042e4c0 | 10992 | } |
6149aea9 PA |
10993 | |
10994 | if (!any) | |
1042e4c0 | 10995 | { |
6149aea9 | 10996 | warning (_("Nothing to save.")); |
1042e4c0 SS |
10997 | return; |
10998 | } | |
10999 | ||
6149aea9 | 11000 | pathname = tilde_expand (filename); |
1042e4c0 | 11001 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11002 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11003 | if (!fp) |
6149aea9 PA |
11004 | error (_("Unable to open file '%s' for saving (%s)"), |
11005 | filename, safe_strerror (errno)); | |
a7bdde9e | 11006 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11007 | |
6149aea9 PA |
11008 | if (extra_trace_bits) |
11009 | save_trace_state_variables (fp); | |
8bf6485c | 11010 | |
6149aea9 | 11011 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11012 | { |
6149aea9 PA |
11013 | /* Skip internal and momentary breakpoints. */ |
11014 | if (!user_settable_breakpoint (tp)) | |
11015 | continue; | |
8bf6485c | 11016 | |
6149aea9 PA |
11017 | /* If we have a filter, only save the breakpoints it accepts. */ |
11018 | if (filter && !filter (tp)) | |
11019 | continue; | |
11020 | ||
11021 | if (tp->ops != NULL) | |
11022 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11023 | else |
11024 | { | |
6149aea9 PA |
11025 | if (tp->type == bp_fast_tracepoint) |
11026 | fprintf_unfiltered (fp, "ftrace"); | |
11027 | else if (tp->type == bp_tracepoint) | |
11028 | fprintf_unfiltered (fp, "trace"); | |
11029 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11030 | fprintf_unfiltered (fp, "tbreak"); | |
11031 | else if (tp->type == bp_breakpoint) | |
11032 | fprintf_unfiltered (fp, "break"); | |
11033 | else if (tp->type == bp_hardware_breakpoint | |
11034 | && tp->disposition == disp_del) | |
11035 | fprintf_unfiltered (fp, "thbreak"); | |
11036 | else if (tp->type == bp_hardware_breakpoint) | |
11037 | fprintf_unfiltered (fp, "hbreak"); | |
11038 | else if (tp->type == bp_watchpoint) | |
11039 | fprintf_unfiltered (fp, "watch"); | |
11040 | else if (tp->type == bp_hardware_watchpoint) | |
11041 | fprintf_unfiltered (fp, "watch"); | |
11042 | else if (tp->type == bp_read_watchpoint) | |
11043 | fprintf_unfiltered (fp, "rwatch"); | |
11044 | else if (tp->type == bp_access_watchpoint) | |
11045 | fprintf_unfiltered (fp, "awatch"); | |
11046 | else | |
11047 | internal_error (__FILE__, __LINE__, | |
11048 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11049 | ||
11050 | if (tp->exp_string) | |
11051 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
11052 | else if (tp->addr_string) | |
11053 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
11054 | else | |
11055 | { | |
11056 | char tmp[40]; | |
11057 | ||
11058 | sprintf_vma (tmp, tp->loc->address); | |
11059 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
11060 | } | |
1042e4c0 SS |
11061 | } |
11062 | ||
6149aea9 PA |
11063 | if (tp->thread != -1) |
11064 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
11065 | ||
11066 | if (tp->task != 0) | |
11067 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
11068 | |
11069 | fprintf_unfiltered (fp, "\n"); | |
11070 | ||
6149aea9 PA |
11071 | /* Note, we can't rely on tp->number for anything, as we can't |
11072 | assume the recreated breakpoint numbers will match. Use $bpnum | |
11073 | instead. */ | |
11074 | ||
11075 | if (tp->cond_string) | |
11076 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
11077 | ||
11078 | if (tp->ignore_count) | |
11079 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
11080 | ||
1042e4c0 | 11081 | if (tp->pass_count) |
a7bdde9e | 11082 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 11083 | |
a7bdde9e | 11084 | if (tp->commands) |
1042e4c0 | 11085 | { |
a7bdde9e VP |
11086 | volatile struct gdb_exception ex; |
11087 | ||
6149aea9 | 11088 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
11089 | |
11090 | ui_out_redirect (uiout, fp); | |
11091 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1042e4c0 | 11092 | { |
9add0f1b | 11093 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
11094 | } |
11095 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 11096 | |
a7bdde9e VP |
11097 | if (ex.reason < 0) |
11098 | throw_exception (ex); | |
1042e4c0 | 11099 | |
a7bdde9e | 11100 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 11101 | } |
6149aea9 PA |
11102 | |
11103 | if (tp->enable_state == bp_disabled) | |
11104 | fprintf_unfiltered (fp, "disable\n"); | |
11105 | ||
11106 | /* If this is a multi-location breakpoint, check if the locations | |
11107 | should be individually disabled. Watchpoint locations are | |
11108 | special, and not user visible. */ | |
11109 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
11110 | { | |
11111 | struct bp_location *loc; | |
11112 | int n = 1; | |
11113 | ||
11114 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
11115 | if (!loc->enabled) | |
11116 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
11117 | } | |
1042e4c0 | 11118 | } |
8bf6485c | 11119 | |
6149aea9 | 11120 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
11121 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
11122 | ||
1042e4c0 SS |
11123 | do_cleanups (cleanup); |
11124 | if (from_tty) | |
6149aea9 PA |
11125 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
11126 | } | |
11127 | ||
11128 | /* The `save breakpoints' command. */ | |
11129 | ||
11130 | static void | |
11131 | save_breakpoints_command (char *args, int from_tty) | |
11132 | { | |
11133 | save_breakpoints (args, from_tty, NULL); | |
11134 | } | |
11135 | ||
11136 | /* The `save tracepoints' command. */ | |
11137 | ||
11138 | static void | |
11139 | save_tracepoints_command (char *args, int from_tty) | |
11140 | { | |
11141 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
11142 | } |
11143 | ||
11144 | /* Create a vector of all tracepoints. */ | |
11145 | ||
11146 | VEC(breakpoint_p) * | |
11147 | all_tracepoints () | |
11148 | { | |
11149 | VEC(breakpoint_p) *tp_vec = 0; | |
11150 | struct breakpoint *tp; | |
11151 | ||
11152 | ALL_TRACEPOINTS (tp) | |
11153 | { | |
11154 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
11155 | } | |
11156 | ||
11157 | return tp_vec; | |
11158 | } | |
11159 | ||
c906108c | 11160 | \f |
31e2b00f AS |
11161 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
11162 | It is defined as a macro to prevent duplication. | |
11163 | COMMAND should be a string constant containing the name of the command. */ | |
11164 | #define BREAK_ARGS_HELP(command) \ | |
11165 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
11166 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
11167 | If a line number is specified, break at start of code for that line.\n\ | |
11168 | If a function is specified, break at start of code for that function.\n\ | |
11169 | If an address is specified, break at that exact address.\n\ | |
11170 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
11171 | This is useful for breaking on return to a stack frame.\n\ | |
11172 | \n\ | |
11173 | THREADNUM is the number from \"info threads\".\n\ | |
11174 | CONDITION is a boolean expression.\n\ | |
11175 | \n\ | |
11176 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
11177 | \n\ | |
11178 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
11179 | ||
44feb3ce TT |
11180 | /* List of subcommands for "catch". */ |
11181 | static struct cmd_list_element *catch_cmdlist; | |
11182 | ||
11183 | /* List of subcommands for "tcatch". */ | |
11184 | static struct cmd_list_element *tcatch_cmdlist; | |
11185 | ||
11186 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
11187 | lists, and pass some additional user data to the command function. */ | |
11188 | static void | |
11189 | add_catch_command (char *name, char *docstring, | |
11190 | void (*sfunc) (char *args, int from_tty, | |
11191 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
11192 | char **(*completer) (struct cmd_list_element *cmd, |
11193 | char *text, char *word), | |
44feb3ce TT |
11194 | void *user_data_catch, |
11195 | void *user_data_tcatch) | |
11196 | { | |
11197 | struct cmd_list_element *command; | |
11198 | ||
11199 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11200 | &catch_cmdlist); | |
11201 | set_cmd_sfunc (command, sfunc); | |
11202 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 11203 | set_cmd_completer (command, completer); |
44feb3ce TT |
11204 | |
11205 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11206 | &tcatch_cmdlist); | |
11207 | set_cmd_sfunc (command, sfunc); | |
11208 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 11209 | set_cmd_completer (command, completer); |
44feb3ce TT |
11210 | } |
11211 | ||
6c95b8df | 11212 | static void |
a79b8f6e | 11213 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 11214 | { |
6c95b8df PA |
11215 | inf->total_syscalls_count = 0; |
11216 | inf->any_syscall_count = 0; | |
11217 | VEC_free (int, inf->syscalls_counts); | |
11218 | } | |
11219 | ||
6149aea9 PA |
11220 | static void |
11221 | save_command (char *arg, int from_tty) | |
11222 | { | |
11223 | printf_unfiltered (_("\ | |
11224 | \"save\" must be followed by the name of a save subcommand.\n")); | |
11225 | help_list (save_cmdlist, "save ", -1, gdb_stdout); | |
11226 | } | |
11227 | ||
c906108c | 11228 | void |
fba45db2 | 11229 | _initialize_breakpoint (void) |
c906108c SS |
11230 | { |
11231 | struct cmd_list_element *c; | |
11232 | ||
84acb35a | 11233 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 11234 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 11235 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 11236 | |
c906108c SS |
11237 | breakpoint_chain = 0; |
11238 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
11239 | before a breakpoint is set. */ | |
11240 | breakpoint_count = 0; | |
11241 | ||
1042e4c0 SS |
11242 | tracepoint_count = 0; |
11243 | ||
1bedd215 AC |
11244 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
11245 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
11246 | Usage is `ignore N COUNT'.")); | |
c906108c | 11247 | if (xdb_commands) |
c5aa993b | 11248 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 11249 | |
1bedd215 AC |
11250 | add_com ("commands", class_breakpoint, commands_command, _("\ |
11251 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
11252 | Give breakpoint number as argument after \"commands\".\n\ |
11253 | With no argument, the targeted breakpoint is the last one set.\n\ | |
11254 | The commands themselves follow starting on the next line.\n\ | |
11255 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11256 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11257 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11258 | |
1bedd215 AC |
11259 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11260 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11261 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11262 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11263 | |
1bedd215 | 11264 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11265 | Set a temporary breakpoint.\n\ |
c906108c SS |
11266 | Like \"break\" except the breakpoint is only temporary,\n\ |
11267 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11268 | by using \"enable delete\" on the breakpoint number.\n\ |
11269 | \n" | |
11270 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11271 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11272 | |
1bedd215 | 11273 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11274 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11275 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11276 | some target hardware may not have this support.\n\ |
11277 | \n" | |
11278 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11279 | set_cmd_completer (c, location_completer); |
c906108c | 11280 | |
1bedd215 | 11281 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11282 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11283 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11284 | so it will be deleted when hit.\n\ |
11285 | \n" | |
11286 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11287 | set_cmd_completer (c, location_completer); |
c906108c | 11288 | |
1bedd215 AC |
11289 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11290 | Enable some breakpoints.\n\ | |
c906108c SS |
11291 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11292 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11293 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11294 | With a subcommand you can enable temporarily."), |
c906108c SS |
11295 | &enablelist, "enable ", 1, &cmdlist); |
11296 | if (xdb_commands) | |
1bedd215 AC |
11297 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11298 | Enable some breakpoints.\n\ | |
c906108c SS |
11299 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11300 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11301 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11302 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11303 | |
11304 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11305 | ||
84951ab5 | 11306 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 11307 | Enable some breakpoints.\n\ |
c906108c SS |
11308 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11309 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11310 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11311 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11312 | |
1a966eab AC |
11313 | add_cmd ("once", no_class, enable_once_command, _("\ |
11314 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11315 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11316 | &enablebreaklist); |
11317 | ||
1a966eab AC |
11318 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11319 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11320 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11321 | &enablebreaklist); |
11322 | ||
1a966eab AC |
11323 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11324 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11325 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11326 | &enablelist); |
11327 | ||
1a966eab AC |
11328 | add_cmd ("once", no_class, enable_once_command, _("\ |
11329 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11330 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11331 | &enablelist); |
11332 | ||
1bedd215 AC |
11333 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
11334 | Disable some breakpoints.\n\ | |
c906108c SS |
11335 | Arguments are breakpoint numbers with spaces in between.\n\ |
11336 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11337 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
11338 | &disablelist, "disable ", 1, &cmdlist); |
11339 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
11340 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
11341 | if (xdb_commands) | |
1bedd215 AC |
11342 | add_com ("sb", class_breakpoint, disable_command, _("\ |
11343 | Disable some breakpoints.\n\ | |
c906108c SS |
11344 | Arguments are breakpoint numbers with spaces in between.\n\ |
11345 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11346 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 11347 | |
1a966eab AC |
11348 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
11349 | Disable some breakpoints.\n\ | |
c906108c SS |
11350 | Arguments are breakpoint numbers with spaces in between.\n\ |
11351 | To disable all breakpoints, give no argument.\n\ | |
11352 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 11353 | This command may be abbreviated \"disable\"."), |
c906108c SS |
11354 | &disablelist); |
11355 | ||
1bedd215 AC |
11356 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
11357 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11358 | Arguments are breakpoint numbers with spaces in between.\n\ |
11359 | To delete all breakpoints, give no argument.\n\ | |
11360 | \n\ | |
11361 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 11362 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
11363 | &deletelist, "delete ", 1, &cmdlist); |
11364 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 11365 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 11366 | if (xdb_commands) |
1bedd215 AC |
11367 | add_com ("db", class_breakpoint, delete_command, _("\ |
11368 | Delete some breakpoints.\n\ | |
c906108c | 11369 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 11370 | To delete all breakpoints, give no argument.\n")); |
c906108c | 11371 | |
1a966eab AC |
11372 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
11373 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11374 | Arguments are breakpoint numbers with spaces in between.\n\ |
11375 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 11376 | This command may be abbreviated \"delete\"."), |
c906108c SS |
11377 | &deletelist); |
11378 | ||
1bedd215 AC |
11379 | add_com ("clear", class_breakpoint, clear_command, _("\ |
11380 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
11381 | Argument may be line number, function name, or \"*\" and an address.\n\ |
11382 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
11383 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
11384 | If an address is specified, breakpoints at that address are cleared.\n\ |
11385 | \n\ | |
11386 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
11387 | is executing in.\n\ |
11388 | \n\ | |
1bedd215 | 11389 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 11390 | |
1bedd215 | 11391 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
11392 | Set breakpoint at specified line or function.\n" |
11393 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 11394 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11395 | |
c906108c SS |
11396 | add_com_alias ("b", "break", class_run, 1); |
11397 | add_com_alias ("br", "break", class_run, 1); | |
11398 | add_com_alias ("bre", "break", class_run, 1); | |
11399 | add_com_alias ("brea", "break", class_run, 1); | |
11400 | ||
7681d515 PM |
11401 | if (xdb_commands) |
11402 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
11403 | |
11404 | if (dbx_commands) | |
11405 | { | |
1bedd215 AC |
11406 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
11407 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
11408 | &stoplist, "stop ", 1, &cmdlist); |
11409 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 11410 | _("Break in function or address."), &stoplist); |
c5aa993b | 11411 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 11412 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
11413 | add_com ("status", class_info, breakpoints_info, _("\ |
11414 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11415 | The \"Type\" column indicates one of:\n\ |
11416 | \tbreakpoint - normal breakpoint\n\ | |
11417 | \twatchpoint - watchpoint\n\ | |
11418 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11419 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11420 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11421 | address and file/line number respectively.\n\ |
11422 | \n\ | |
11423 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11424 | are set to the address of the last breakpoint listed unless the command\n\ |
11425 | is prefixed with \"server \".\n\n\ | |
c906108c | 11426 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11427 | breakpoint set.")); |
c906108c SS |
11428 | } |
11429 | ||
1bedd215 AC |
11430 | add_info ("breakpoints", breakpoints_info, _("\ |
11431 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11432 | The \"Type\" column indicates one of:\n\ |
11433 | \tbreakpoint - normal breakpoint\n\ | |
11434 | \twatchpoint - watchpoint\n\ | |
11435 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11436 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11437 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11438 | address and file/line number respectively.\n\ |
11439 | \n\ | |
11440 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11441 | are set to the address of the last breakpoint listed unless the command\n\ |
11442 | is prefixed with \"server \".\n\n\ | |
c906108c | 11443 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11444 | breakpoint set.")); |
c906108c | 11445 | |
6b04bdb7 MS |
11446 | add_info_alias ("b", "breakpoints", 1); |
11447 | ||
c906108c | 11448 | if (xdb_commands) |
1bedd215 AC |
11449 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
11450 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11451 | The \"Type\" column indicates one of:\n\ |
11452 | \tbreakpoint - normal breakpoint\n\ | |
11453 | \twatchpoint - watchpoint\n\ | |
11454 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11455 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11456 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11457 | address and file/line number respectively.\n\ |
11458 | \n\ | |
11459 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11460 | are set to the address of the last breakpoint listed unless the command\n\ |
11461 | is prefixed with \"server \".\n\n\ | |
c906108c | 11462 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11463 | breakpoint set.")); |
c906108c | 11464 | |
1a966eab AC |
11465 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
11466 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11467 | The \"Type\" column indicates one of:\n\ |
11468 | \tbreakpoint - normal breakpoint\n\ | |
11469 | \twatchpoint - watchpoint\n\ | |
11470 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
11471 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
11472 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
11473 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
11474 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
11475 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
11476 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
11477 | address and file/line number respectively.\n\ |
11478 | \n\ | |
11479 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11480 | are set to the address of the last breakpoint listed unless the command\n\ |
11481 | is prefixed with \"server \".\n\n\ | |
c906108c | 11482 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 11483 | breakpoint set."), |
c906108c SS |
11484 | &maintenanceinfolist); |
11485 | ||
44feb3ce TT |
11486 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
11487 | Set catchpoints to catch events."), | |
11488 | &catch_cmdlist, "catch ", | |
11489 | 0/*allow-unknown*/, &cmdlist); | |
11490 | ||
11491 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
11492 | Set temporary catchpoints to catch events."), | |
11493 | &tcatch_cmdlist, "tcatch ", | |
11494 | 0/*allow-unknown*/, &cmdlist); | |
11495 | ||
11496 | /* Add catch and tcatch sub-commands. */ | |
11497 | add_catch_command ("catch", _("\ | |
11498 | Catch an exception, when caught.\n\ | |
11499 | With an argument, catch only exceptions with the given name."), | |
11500 | catch_catch_command, | |
a96d9b2e | 11501 | NULL, |
44feb3ce TT |
11502 | CATCH_PERMANENT, |
11503 | CATCH_TEMPORARY); | |
11504 | add_catch_command ("throw", _("\ | |
11505 | Catch an exception, when thrown.\n\ | |
11506 | With an argument, catch only exceptions with the given name."), | |
11507 | catch_throw_command, | |
a96d9b2e | 11508 | NULL, |
44feb3ce TT |
11509 | CATCH_PERMANENT, |
11510 | CATCH_TEMPORARY); | |
11511 | add_catch_command ("fork", _("Catch calls to fork."), | |
11512 | catch_fork_command_1, | |
a96d9b2e | 11513 | NULL, |
44feb3ce TT |
11514 | (void *) (uintptr_t) catch_fork_permanent, |
11515 | (void *) (uintptr_t) catch_fork_temporary); | |
11516 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
11517 | catch_fork_command_1, | |
a96d9b2e | 11518 | NULL, |
44feb3ce TT |
11519 | (void *) (uintptr_t) catch_vfork_permanent, |
11520 | (void *) (uintptr_t) catch_vfork_temporary); | |
11521 | add_catch_command ("exec", _("Catch calls to exec."), | |
11522 | catch_exec_command_1, | |
a96d9b2e SDJ |
11523 | NULL, |
11524 | CATCH_PERMANENT, | |
11525 | CATCH_TEMPORARY); | |
11526 | add_catch_command ("syscall", _("\ | |
11527 | Catch system calls by their names and/or numbers.\n\ | |
11528 | Arguments say which system calls to catch. If no arguments\n\ | |
11529 | are given, every system call will be caught.\n\ | |
11530 | Arguments, if given, should be one or more system call names\n\ | |
11531 | (if your system supports that), or system call numbers."), | |
11532 | catch_syscall_command_1, | |
11533 | catch_syscall_completer, | |
44feb3ce TT |
11534 | CATCH_PERMANENT, |
11535 | CATCH_TEMPORARY); | |
44feb3ce TT |
11536 | add_catch_command ("exception", _("\ |
11537 | Catch Ada exceptions, when raised.\n\ | |
11538 | With an argument, catch only exceptions with the given name."), | |
11539 | catch_ada_exception_command, | |
a96d9b2e | 11540 | NULL, |
44feb3ce TT |
11541 | CATCH_PERMANENT, |
11542 | CATCH_TEMPORARY); | |
11543 | add_catch_command ("assert", _("\ | |
11544 | Catch failed Ada assertions, when raised.\n\ | |
11545 | With an argument, catch only exceptions with the given name."), | |
11546 | catch_assert_command, | |
a96d9b2e | 11547 | NULL, |
44feb3ce TT |
11548 | CATCH_PERMANENT, |
11549 | CATCH_TEMPORARY); | |
c5aa993b | 11550 | |
1bedd215 AC |
11551 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
11552 | Set a watchpoint for an expression.\n\ | |
c906108c | 11553 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11554 | an expression changes.")); |
65d12d83 | 11555 | set_cmd_completer (c, expression_completer); |
c906108c | 11556 | |
1bedd215 AC |
11557 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
11558 | Set a read watchpoint for an expression.\n\ | |
c906108c | 11559 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11560 | an expression is read.")); |
65d12d83 | 11561 | set_cmd_completer (c, expression_completer); |
c906108c | 11562 | |
1bedd215 AC |
11563 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
11564 | Set a watchpoint for an expression.\n\ | |
c906108c | 11565 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11566 | an expression is either read or written.")); |
65d12d83 | 11567 | set_cmd_completer (c, expression_completer); |
c906108c | 11568 | |
d77f58be SS |
11569 | add_info ("watchpoints", watchpoints_info, _("\ |
11570 | Status of watchpoints, or watchpoint number NUMBER.")); | |
11571 | ||
c906108c SS |
11572 | |
11573 | ||
920d2a44 AC |
11574 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
11575 | respond to changes - contrary to the description. */ | |
85c07804 AC |
11576 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
11577 | &can_use_hw_watchpoints, _("\ | |
11578 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
11579 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
11580 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
11581 | such is available. (However, any hardware watchpoints that were\n\ | |
11582 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
11583 | hardware.)"), |
11584 | NULL, | |
920d2a44 | 11585 | show_can_use_hw_watchpoints, |
85c07804 | 11586 | &setlist, &showlist); |
c906108c SS |
11587 | |
11588 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 11589 | |
1042e4c0 SS |
11590 | /* Tracepoint manipulation commands. */ |
11591 | ||
11592 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
11593 | Set a tracepoint at specified line or function.\n\ | |
11594 | \n" | |
11595 | BREAK_ARGS_HELP ("trace") "\n\ | |
11596 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11597 | set_cmd_completer (c, location_completer); | |
11598 | ||
11599 | add_com_alias ("tp", "trace", class_alias, 0); | |
11600 | add_com_alias ("tr", "trace", class_alias, 1); | |
11601 | add_com_alias ("tra", "trace", class_alias, 1); | |
11602 | add_com_alias ("trac", "trace", class_alias, 1); | |
11603 | ||
7a697b8d SS |
11604 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
11605 | Set a fast tracepoint at specified line or function.\n\ | |
11606 | \n" | |
11607 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
11608 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11609 | set_cmd_completer (c, location_completer); | |
11610 | ||
1042e4c0 SS |
11611 | add_info ("tracepoints", tracepoints_info, _("\ |
11612 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
11613 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
11614 | last tracepoint set.")); | |
11615 | ||
11616 | add_info_alias ("tp", "tracepoints", 1); | |
11617 | ||
11618 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
11619 | Delete specified tracepoints.\n\ | |
11620 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11621 | No argument means delete all tracepoints."), | |
11622 | &deletelist); | |
11623 | ||
11624 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
11625 | Disable specified tracepoints.\n\ | |
11626 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11627 | No argument means disable all tracepoints."), | |
11628 | &disablelist); | |
11629 | deprecate_cmd (c, "disable"); | |
11630 | ||
11631 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
11632 | Enable specified tracepoints.\n\ | |
11633 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11634 | No argument means enable all tracepoints."), | |
11635 | &enablelist); | |
11636 | deprecate_cmd (c, "enable"); | |
11637 | ||
11638 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
11639 | Set the passcount for a tracepoint.\n\ | |
11640 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
11641 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
11642 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
11643 | ||
6149aea9 PA |
11644 | add_prefix_cmd ("save", class_breakpoint, save_command, |
11645 | _("Save breakpoint definitions as a script."), | |
11646 | &save_cmdlist, "save ", | |
11647 | 0/*allow-unknown*/, &cmdlist); | |
11648 | ||
11649 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
11650 | Save current breakpoint definitions as a script.\n\ | |
11651 | This includes all types of breakpoints (breakpoints, watchpoints, \n\ | |
11652 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ | |
11653 | session to restore them."), | |
11654 | &save_cmdlist); | |
11655 | set_cmd_completer (c, filename_completer); | |
11656 | ||
11657 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 11658 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
11659 | Use the 'source' command in another debug session to restore them."), |
11660 | &save_cmdlist); | |
1042e4c0 SS |
11661 | set_cmd_completer (c, filename_completer); |
11662 | ||
6149aea9 PA |
11663 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
11664 | deprecate_cmd (c, "save tracepoints"); | |
11665 | ||
1bedd215 | 11666 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11667 | Breakpoint specific settings\n\ |
11668 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11669 | pending breakpoint behavior"), |
fa8d40ab JJ |
11670 | &breakpoint_set_cmdlist, "set breakpoint ", |
11671 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 11672 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11673 | Breakpoint specific settings\n\ |
11674 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11675 | pending breakpoint behavior"), |
fa8d40ab JJ |
11676 | &breakpoint_show_cmdlist, "show breakpoint ", |
11677 | 0/*allow-unknown*/, &showlist); | |
11678 | ||
7915a72c AC |
11679 | add_setshow_auto_boolean_cmd ("pending", no_class, |
11680 | &pending_break_support, _("\ | |
11681 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
11682 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
11683 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
11684 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
11685 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 11686 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 11687 | NULL, |
920d2a44 | 11688 | show_pending_break_support, |
6e1d7d6c AC |
11689 | &breakpoint_set_cmdlist, |
11690 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
11691 | |
11692 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
11693 | |
11694 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
11695 | &automatic_hardware_breakpoints, _("\ | |
11696 | Set automatic usage of hardware breakpoints."), _("\ | |
11697 | Show automatic usage of hardware breakpoints."), _("\ | |
11698 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
11699 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
11700 | a warning will be emitted for such breakpoints."), | |
11701 | NULL, | |
11702 | show_automatic_hardware_breakpoints, | |
11703 | &breakpoint_set_cmdlist, | |
11704 | &breakpoint_show_cmdlist); | |
74960c60 | 11705 | |
33e5cbd6 PA |
11706 | add_setshow_enum_cmd ("always-inserted", class_support, |
11707 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
11708 | Set mode for inserting breakpoints."), _("\ |
11709 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
11710 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
11711 | resumed, and removed when execution stops. When this mode is on,\n\ | |
11712 | breakpoints are inserted immediately and removed only when the user\n\ | |
11713 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
11714 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
11715 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
11716 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
11717 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
11718 | NULL, |
11719 | &show_always_inserted_mode, | |
11720 | &breakpoint_set_cmdlist, | |
11721 | &breakpoint_show_cmdlist); | |
765dc015 VP |
11722 | |
11723 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
11724 | |
11725 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 11726 | } |