Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
4c38e0a4 | 5 | 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
c906108c | 64 | |
1042e4c0 SS |
65 | /* readline include files */ |
66 | #include "readline/readline.h" | |
67 | #include "readline/history.h" | |
68 | ||
69 | /* readline defines this. */ | |
70 | #undef savestring | |
71 | ||
034dad6f | 72 | #include "mi/mi-common.h" |
104c1213 | 73 | |
44feb3ce TT |
74 | /* Arguments to pass as context to some catch command handlers. */ |
75 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
76 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 77 | |
44feb3ce | 78 | /* Prototypes for local functions. */ |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_once_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void disable_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_command (char *, int); |
c906108c | 87 | |
95a42b64 TT |
88 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
89 | void *), | |
90 | void *); | |
c906108c | 91 | |
a14ed312 | 92 | static void ignore_command (char *, int); |
c906108c | 93 | |
4efb68b1 | 94 | static int breakpoint_re_set_one (void *); |
c906108c | 95 | |
a14ed312 | 96 | static void clear_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void catch_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void watch_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 103 | |
98deb0da | 104 | static void break_command_1 (char *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void mention (struct breakpoint *); |
c906108c | 107 | |
63c252f8 PM |
108 | /* This function is used in gdbtk sources and thus can not be made static. */ |
109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
76897487 KB |
113 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
114 | ||
a6d9a66e UW |
115 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
116 | CORE_ADDR bpaddr, | |
88f7da05 | 117 | enum bptype bptype); |
76897487 | 118 | |
6c95b8df PA |
119 | static void describe_other_breakpoints (struct gdbarch *, |
120 | struct program_space *, CORE_ADDR, | |
5af949e3 | 121 | struct obj_section *, int); |
c906108c | 122 | |
6c95b8df PA |
123 | static int breakpoint_address_match (struct address_space *aspace1, |
124 | CORE_ADDR addr1, | |
125 | struct address_space *aspace2, | |
126 | CORE_ADDR addr2); | |
127 | ||
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
a14ed312 | 131 | static void breakpoints_info (char *, int); |
c906108c | 132 | |
d77f58be SS |
133 | static void watchpoints_info (char *, int); |
134 | ||
135 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 136 | |
89f9893c | 137 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 138 | |
4efb68b1 | 139 | static int breakpoint_cond_eval (void *); |
c906108c | 140 | |
4efb68b1 | 141 | static void cleanup_executing_breakpoints (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void commands_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void condition_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static int get_number_trailer (char **, int); |
c906108c | 148 | |
c5aa993b JM |
149 | typedef enum |
150 | { | |
151 | mark_inserted, | |
152 | mark_uninserted | |
153 | } | |
154 | insertion_state_t; | |
c906108c | 155 | |
0bde7532 | 156 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 157 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 158 | |
a14ed312 | 159 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
160 | |
161 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 162 | |
4efb68b1 | 163 | static int watchpoint_check (void *); |
c906108c | 164 | |
a14ed312 | 165 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_breakpoint_used_count (void); |
c906108c | 168 | |
a14ed312 | 169 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 170 | |
a14ed312 | 171 | static void hbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void thbreak_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void watch_command_1 (char *, int, int); |
c906108c | 176 | |
a14ed312 | 177 | static void rwatch_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void awatch_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 182 | |
a14ed312 | 183 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 190 | |
d85310f7 MS |
191 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
192 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 193 | |
a14ed312 | 194 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 195 | |
a14ed312 | 196 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 197 | |
6c95b8df PA |
198 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
199 | CORE_ADDR pc); | |
1aafd4da | 200 | |
fe3f5fa8 VP |
201 | static void free_bp_location (struct bp_location *loc); |
202 | ||
39d61571 | 203 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 204 | |
b60e7edf | 205 | static void update_global_location_list (int); |
a5606eee | 206 | |
b60e7edf | 207 | static void update_global_location_list_nothrow (int); |
74960c60 | 208 | |
d77f58be | 209 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 210 | |
d77f58be | 211 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 212 | |
74960c60 | 213 | static void insert_breakpoint_locations (void); |
a5606eee | 214 | |
a96d9b2e SDJ |
215 | static int syscall_catchpoint_p (struct breakpoint *b); |
216 | ||
1042e4c0 SS |
217 | static void tracepoints_info (char *, int); |
218 | ||
219 | static void delete_trace_command (char *, int); | |
220 | ||
221 | static void enable_trace_command (char *, int); | |
222 | ||
223 | static void disable_trace_command (char *, int); | |
224 | ||
225 | static void trace_pass_command (char *, int); | |
226 | ||
5cea2a26 PA |
227 | /* A reference-counted struct command_line. This lets multiple |
228 | breakpoints share a single command list. */ | |
229 | struct counted_command_line | |
230 | { | |
231 | /* The reference count. */ | |
232 | int refc; | |
233 | ||
234 | /* The command list. */ | |
235 | struct command_line *commands; | |
236 | }; | |
237 | ||
238 | struct command_line * | |
239 | breakpoint_commands (struct breakpoint *b) | |
240 | { | |
241 | return b->commands ? b->commands->commands : NULL; | |
242 | } | |
3daf8fe5 | 243 | |
f3b1572e PA |
244 | /* Flag indicating that a command has proceeded the inferior past the |
245 | current breakpoint. */ | |
246 | ||
247 | static int breakpoint_proceeded; | |
248 | ||
2cec12e5 AR |
249 | static const char * |
250 | bpdisp_text (enum bpdisp disp) | |
251 | { | |
252 | /* NOTE: the following values are a part of MI protocol and represent | |
253 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
254 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
255 | return bpdisps[(int) disp]; | |
256 | } | |
c906108c | 257 | |
2cec12e5 | 258 | /* Prototypes for exported functions. */ |
c906108c SS |
259 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
260 | if such is available. */ | |
261 | static int can_use_hw_watchpoints; | |
262 | ||
920d2a44 AC |
263 | static void |
264 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
265 | struct cmd_list_element *c, | |
266 | const char *value) | |
267 | { | |
268 | fprintf_filtered (file, _("\ | |
269 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
270 | value); | |
271 | } | |
272 | ||
fa8d40ab JJ |
273 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
274 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
275 | for unrecognized breakpoint locations. | |
276 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
277 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
278 | static void |
279 | show_pending_break_support (struct ui_file *file, int from_tty, | |
280 | struct cmd_list_element *c, | |
281 | const char *value) | |
282 | { | |
283 | fprintf_filtered (file, _("\ | |
284 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
285 | value); | |
286 | } | |
fa8d40ab | 287 | |
765dc015 VP |
288 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
289 | set with "break" but falling in read-only memory. | |
290 | If 0, gdb will warn about such breakpoints, but won't automatically | |
291 | use hardware breakpoints. */ | |
292 | static int automatic_hardware_breakpoints; | |
293 | static void | |
294 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
295 | struct cmd_list_element *c, | |
296 | const char *value) | |
297 | { | |
298 | fprintf_filtered (file, _("\ | |
299 | Automatic usage of hardware breakpoints is %s.\n"), | |
300 | value); | |
301 | } | |
302 | ||
33e5cbd6 PA |
303 | /* If on, gdb will keep breakpoints inserted even as inferior is |
304 | stopped, and immediately insert any new breakpoints. If off, gdb | |
305 | will insert breakpoints into inferior only when resuming it, and | |
306 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
307 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
308 | ||
309 | static const char always_inserted_auto[] = "auto"; | |
310 | static const char always_inserted_on[] = "on"; | |
311 | static const char always_inserted_off[] = "off"; | |
312 | static const char *always_inserted_enums[] = { | |
313 | always_inserted_auto, | |
314 | always_inserted_off, | |
315 | always_inserted_on, | |
316 | NULL | |
317 | }; | |
318 | static const char *always_inserted_mode = always_inserted_auto; | |
319 | static void | |
74960c60 | 320 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 321 | struct cmd_list_element *c, const char *value) |
74960c60 | 322 | { |
33e5cbd6 PA |
323 | if (always_inserted_mode == always_inserted_auto) |
324 | fprintf_filtered (file, _("\ | |
325 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
326 | value, | |
327 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
328 | else | |
329 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
330 | } |
331 | ||
33e5cbd6 PA |
332 | int |
333 | breakpoints_always_inserted_mode (void) | |
334 | { | |
335 | return (always_inserted_mode == always_inserted_on | |
336 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
337 | } | |
765dc015 | 338 | |
a14ed312 | 339 | void _initialize_breakpoint (void); |
c906108c | 340 | |
c906108c SS |
341 | /* Are we executing breakpoint commands? */ |
342 | static int executing_breakpoint_commands; | |
343 | ||
c02f5703 MS |
344 | /* Are overlay event breakpoints enabled? */ |
345 | static int overlay_events_enabled; | |
346 | ||
c906108c SS |
347 | /* Walk the following statement or block through all breakpoints. |
348 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
349 | breakpoint. */ | |
350 | ||
5c44784c | 351 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 352 | |
5c44784c JM |
353 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
354 | for (B = breakpoint_chain; \ | |
355 | B ? (TMP=B->next, 1): 0; \ | |
356 | B = TMP) | |
c906108c | 357 | |
876fa593 JK |
358 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
359 | provided so update_global_location_list must not be called while executing | |
360 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 361 | |
876fa593 JK |
362 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
363 | for (BP_TMP = bp_location; \ | |
364 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
365 | BP_TMP++) | |
7cc221ef | 366 | |
1042e4c0 SS |
367 | /* Iterator for tracepoints only. */ |
368 | ||
369 | #define ALL_TRACEPOINTS(B) \ | |
370 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 371 | if (is_tracepoint (B)) |
1042e4c0 | 372 | |
7cc221ef | 373 | /* Chains of all breakpoints defined. */ |
c906108c SS |
374 | |
375 | struct breakpoint *breakpoint_chain; | |
376 | ||
876fa593 JK |
377 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
378 | ||
379 | static struct bp_location **bp_location; | |
380 | ||
381 | /* Number of elements of BP_LOCATION. */ | |
382 | ||
383 | static unsigned bp_location_count; | |
384 | ||
385 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
386 | for the current elements of BP_LOCATION which get a valid result from | |
387 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
388 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
389 | ||
390 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
391 | ||
392 | /* Maximum offset plus alignment between | |
393 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
394 | the current elements of BP_LOCATION which get a valid result from | |
395 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
396 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
397 | ||
398 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 399 | |
20874c92 | 400 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 401 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
402 | may still be reported by a target. */ |
403 | VEC(bp_location_p) *moribund_locations = NULL; | |
404 | ||
c906108c SS |
405 | /* Number of last breakpoint made. */ |
406 | ||
95a42b64 TT |
407 | static int breakpoint_count; |
408 | ||
86b17b60 PA |
409 | /* The value of `breakpoint_count' before the last command that |
410 | created breakpoints. If the last (break-like) command created more | |
411 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
412 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
413 | static int prev_breakpoint_count; | |
c906108c | 414 | |
1042e4c0 SS |
415 | /* Number of last tracepoint made. */ |
416 | ||
95a42b64 | 417 | static int tracepoint_count; |
1042e4c0 | 418 | |
6149aea9 PA |
419 | static struct cmd_list_element *breakpoint_set_cmdlist; |
420 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
421 | static struct cmd_list_element *save_cmdlist; | |
422 | ||
468d015d JJ |
423 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
424 | static int | |
425 | breakpoint_enabled (struct breakpoint *b) | |
426 | { | |
0d381245 | 427 | return (b->enable_state == bp_enabled); |
468d015d JJ |
428 | } |
429 | ||
c906108c SS |
430 | /* Set breakpoint count to NUM. */ |
431 | ||
95a42b64 | 432 | static void |
fba45db2 | 433 | set_breakpoint_count (int num) |
c906108c | 434 | { |
86b17b60 | 435 | prev_breakpoint_count = breakpoint_count; |
c906108c | 436 | breakpoint_count = num; |
4fa62494 | 437 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
438 | } |
439 | ||
86b17b60 PA |
440 | /* Used by `start_rbreak_breakpoints' below, to record the current |
441 | breakpoint count before "rbreak" creates any breakpoint. */ | |
442 | static int rbreak_start_breakpoint_count; | |
443 | ||
95a42b64 TT |
444 | /* Called at the start an "rbreak" command to record the first |
445 | breakpoint made. */ | |
86b17b60 | 446 | |
95a42b64 TT |
447 | void |
448 | start_rbreak_breakpoints (void) | |
449 | { | |
86b17b60 | 450 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
451 | } |
452 | ||
453 | /* Called at the end of an "rbreak" command to record the last | |
454 | breakpoint made. */ | |
86b17b60 | 455 | |
95a42b64 TT |
456 | void |
457 | end_rbreak_breakpoints (void) | |
458 | { | |
86b17b60 | 459 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
460 | } |
461 | ||
c906108c SS |
462 | /* Used in run_command to zero the hit count when a new run starts. */ |
463 | ||
464 | void | |
fba45db2 | 465 | clear_breakpoint_hit_counts (void) |
c906108c SS |
466 | { |
467 | struct breakpoint *b; | |
468 | ||
469 | ALL_BREAKPOINTS (b) | |
470 | b->hit_count = 0; | |
471 | } | |
472 | ||
9add0f1b TT |
473 | /* Allocate a new counted_command_line with reference count of 1. |
474 | The new structure owns COMMANDS. */ | |
475 | ||
476 | static struct counted_command_line * | |
477 | alloc_counted_command_line (struct command_line *commands) | |
478 | { | |
479 | struct counted_command_line *result | |
480 | = xmalloc (sizeof (struct counted_command_line)); | |
481 | result->refc = 1; | |
482 | result->commands = commands; | |
483 | return result; | |
484 | } | |
485 | ||
486 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
487 | ||
488 | static void | |
489 | incref_counted_command_line (struct counted_command_line *cmd) | |
490 | { | |
491 | if (cmd) | |
492 | ++cmd->refc; | |
493 | } | |
494 | ||
495 | /* Decrement reference count. If the reference count reaches 0, | |
496 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
497 | nothing if *CMDP is NULL. */ | |
498 | ||
499 | static void | |
500 | decref_counted_command_line (struct counted_command_line **cmdp) | |
501 | { | |
502 | if (*cmdp) | |
503 | { | |
504 | if (--(*cmdp)->refc == 0) | |
505 | { | |
506 | free_command_lines (&(*cmdp)->commands); | |
507 | xfree (*cmdp); | |
508 | } | |
509 | *cmdp = NULL; | |
510 | } | |
511 | } | |
512 | ||
513 | /* A cleanup function that calls decref_counted_command_line. */ | |
514 | ||
515 | static void | |
516 | do_cleanup_counted_command_line (void *arg) | |
517 | { | |
518 | decref_counted_command_line (arg); | |
519 | } | |
520 | ||
521 | /* Create a cleanup that calls decref_counted_command_line on the | |
522 | argument. */ | |
523 | ||
524 | static struct cleanup * | |
525 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
526 | { | |
527 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
528 | } | |
529 | ||
c906108c SS |
530 | /* Default address, symtab and line to put a breakpoint at |
531 | for "break" command with no arg. | |
532 | if default_breakpoint_valid is zero, the other three are | |
533 | not valid, and "break" with no arg is an error. | |
534 | ||
535 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
536 | ||
537 | int default_breakpoint_valid; | |
538 | CORE_ADDR default_breakpoint_address; | |
539 | struct symtab *default_breakpoint_symtab; | |
540 | int default_breakpoint_line; | |
6c95b8df PA |
541 | struct program_space *default_breakpoint_pspace; |
542 | ||
c906108c SS |
543 | \f |
544 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
545 | Advance *PP after the string and any trailing whitespace. | |
546 | ||
547 | Currently the string can either be a number or "$" followed by the name | |
548 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 549 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
550 | |
551 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
552 | |
553 | TRAILER is a character which can be found after the number; most | |
554 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 555 | static int |
fba45db2 | 556 | get_number_trailer (char **pp, int trailer) |
c906108c | 557 | { |
5c44784c | 558 | int retval = 0; /* default */ |
c906108c SS |
559 | char *p = *pp; |
560 | ||
561 | if (p == NULL) | |
562 | /* Empty line means refer to the last breakpoint. */ | |
563 | return breakpoint_count; | |
564 | else if (*p == '$') | |
565 | { | |
566 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 567 | to pass to lookup_internalvar(). */ |
c906108c SS |
568 | char *varname; |
569 | char *start = ++p; | |
4fa62494 | 570 | LONGEST val; |
c906108c SS |
571 | |
572 | while (isalnum (*p) || *p == '_') | |
573 | p++; | |
574 | varname = (char *) alloca (p - start + 1); | |
575 | strncpy (varname, start, p - start); | |
576 | varname[p - start] = '\0'; | |
4fa62494 UW |
577 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
578 | retval = (int) val; | |
5c44784c JM |
579 | else |
580 | { | |
a3f17187 | 581 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
582 | retval = 0; |
583 | } | |
c906108c SS |
584 | } |
585 | else | |
586 | { | |
587 | if (*p == '-') | |
588 | ++p; | |
589 | while (*p >= '0' && *p <= '9') | |
590 | ++p; | |
591 | if (p == *pp) | |
592 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
593 | { |
594 | /* Skip non-numeric token */ | |
595 | while (*p && !isspace((int) *p)) | |
596 | ++p; | |
597 | /* Return zero, which caller must interpret as error. */ | |
598 | retval = 0; | |
599 | } | |
600 | else | |
601 | retval = atoi (*pp); | |
602 | } | |
603 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
604 | { | |
605 | /* Trailing junk: return 0 and let caller print error msg. */ | |
606 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
607 | ++p; | |
608 | retval = 0; | |
c906108c | 609 | } |
c906108c SS |
610 | while (isspace (*p)) |
611 | p++; | |
612 | *pp = p; | |
613 | return retval; | |
614 | } | |
5c44784c | 615 | |
11cf8741 | 616 | |
5c44784c JM |
617 | /* Like get_number_trailer, but don't allow a trailer. */ |
618 | int | |
fba45db2 | 619 | get_number (char **pp) |
5c44784c JM |
620 | { |
621 | return get_number_trailer (pp, '\0'); | |
622 | } | |
623 | ||
624 | /* Parse a number or a range. | |
625 | * A number will be of the form handled by get_number. | |
626 | * A range will be of the form <number1> - <number2>, and | |
627 | * will represent all the integers between number1 and number2, | |
628 | * inclusive. | |
629 | * | |
630 | * While processing a range, this fuction is called iteratively; | |
631 | * At each call it will return the next value in the range. | |
632 | * | |
633 | * At the beginning of parsing a range, the char pointer PP will | |
634 | * be advanced past <number1> and left pointing at the '-' token. | |
635 | * Subsequent calls will not advance the pointer until the range | |
636 | * is completed. The call that completes the range will advance | |
637 | * pointer PP past <number2>. | |
638 | */ | |
639 | ||
640 | int | |
fba45db2 | 641 | get_number_or_range (char **pp) |
5c44784c JM |
642 | { |
643 | static int last_retval, end_value; | |
644 | static char *end_ptr; | |
645 | static int in_range = 0; | |
646 | ||
647 | if (**pp != '-') | |
648 | { | |
649 | /* Default case: pp is pointing either to a solo number, | |
650 | or to the first number of a range. */ | |
651 | last_retval = get_number_trailer (pp, '-'); | |
652 | if (**pp == '-') | |
653 | { | |
654 | char **temp; | |
655 | ||
656 | /* This is the start of a range (<number1> - <number2>). | |
657 | Skip the '-', parse and remember the second number, | |
658 | and also remember the end of the final token. */ | |
659 | ||
660 | temp = &end_ptr; | |
661 | end_ptr = *pp + 1; | |
662 | while (isspace ((int) *end_ptr)) | |
663 | end_ptr++; /* skip white space */ | |
664 | end_value = get_number (temp); | |
665 | if (end_value < last_retval) | |
666 | { | |
8a3fe4f8 | 667 | error (_("inverted range")); |
5c44784c JM |
668 | } |
669 | else if (end_value == last_retval) | |
670 | { | |
671 | /* degenerate range (number1 == number2). Advance the | |
672 | token pointer so that the range will be treated as a | |
673 | single number. */ | |
674 | *pp = end_ptr; | |
675 | } | |
676 | else | |
677 | in_range = 1; | |
678 | } | |
679 | } | |
680 | else if (! in_range) | |
8a3fe4f8 | 681 | error (_("negative value")); |
5c44784c JM |
682 | else |
683 | { | |
684 | /* pp points to the '-' that betokens a range. All | |
685 | number-parsing has already been done. Return the next | |
686 | integer value (one greater than the saved previous value). | |
687 | Do not advance the token pointer 'pp' until the end of range | |
688 | is reached. */ | |
689 | ||
690 | if (++last_retval == end_value) | |
691 | { | |
692 | /* End of range reached; advance token pointer. */ | |
693 | *pp = end_ptr; | |
694 | in_range = 0; | |
695 | } | |
696 | } | |
697 | return last_retval; | |
698 | } | |
699 | ||
48cb2d85 VP |
700 | /* Return the breakpoint with the specified number, or NULL |
701 | if the number does not refer to an existing breakpoint. */ | |
702 | ||
703 | struct breakpoint * | |
704 | get_breakpoint (int num) | |
705 | { | |
706 | struct breakpoint *b; | |
707 | ||
708 | ALL_BREAKPOINTS (b) | |
709 | if (b->number == num) | |
710 | return b; | |
711 | ||
712 | return NULL; | |
713 | } | |
5c44784c | 714 | |
c906108c | 715 | \f |
adc36818 PM |
716 | |
717 | void | |
718 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
719 | int from_tty) | |
720 | { | |
721 | struct bp_location *loc = b->loc; | |
722 | ||
723 | for (; loc; loc = loc->next) | |
724 | { | |
725 | xfree (loc->cond); | |
726 | loc->cond = NULL; | |
727 | } | |
728 | xfree (b->cond_string); | |
729 | b->cond_string = NULL; | |
730 | xfree (b->cond_exp); | |
731 | b->cond_exp = NULL; | |
732 | ||
733 | if (*exp == 0) | |
734 | { | |
735 | if (from_tty) | |
736 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
737 | } | |
738 | else | |
739 | { | |
740 | char *arg = exp; | |
741 | /* I don't know if it matters whether this is the string the user | |
742 | typed in or the decompiled expression. */ | |
743 | b->cond_string = xstrdup (arg); | |
744 | b->condition_not_parsed = 0; | |
745 | ||
746 | if (is_watchpoint (b)) | |
747 | { | |
748 | innermost_block = NULL; | |
749 | arg = exp; | |
750 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
751 | if (*arg) | |
752 | error (_("Junk at end of expression")); | |
753 | b->cond_exp_valid_block = innermost_block; | |
754 | } | |
755 | else | |
756 | { | |
757 | for (loc = b->loc; loc; loc = loc->next) | |
758 | { | |
759 | arg = exp; | |
760 | loc->cond = | |
761 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
762 | if (*arg) | |
763 | error (_("Junk at end of expression")); | |
764 | } | |
765 | } | |
766 | } | |
767 | breakpoints_changed (); | |
768 | observer_notify_breakpoint_modified (b->number); | |
769 | } | |
770 | ||
c906108c SS |
771 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
772 | ||
773 | static void | |
fba45db2 | 774 | condition_command (char *arg, int from_tty) |
c906108c | 775 | { |
52f0bd74 | 776 | struct breakpoint *b; |
c906108c | 777 | char *p; |
52f0bd74 | 778 | int bnum; |
c906108c SS |
779 | |
780 | if (arg == 0) | |
e2e0b3e5 | 781 | error_no_arg (_("breakpoint number")); |
c906108c SS |
782 | |
783 | p = arg; | |
784 | bnum = get_number (&p); | |
5c44784c | 785 | if (bnum == 0) |
8a3fe4f8 | 786 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
787 | |
788 | ALL_BREAKPOINTS (b) | |
789 | if (b->number == bnum) | |
2f069f6f | 790 | { |
2566ad2d | 791 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
792 | return; |
793 | } | |
c906108c | 794 | |
8a3fe4f8 | 795 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
796 | } |
797 | ||
a7bdde9e VP |
798 | /* Check that COMMAND do not contain commands that are suitable |
799 | only for tracepoints and not suitable for ordinary breakpoints. | |
800 | Throw if any such commands is found. | |
801 | */ | |
802 | static void | |
803 | check_no_tracepoint_commands (struct command_line *commands) | |
804 | { | |
805 | struct command_line *c; | |
806 | for (c = commands; c; c = c->next) | |
807 | { | |
808 | int i; | |
809 | ||
810 | if (c->control_type == while_stepping_control) | |
811 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
812 | ||
813 | for (i = 0; i < c->body_count; ++i) | |
814 | check_no_tracepoint_commands ((c->body_list)[i]); | |
815 | ||
816 | /* Not that command parsing removes leading whitespace and comment | |
817 | lines and also empty lines. So, we only need to check for | |
818 | command directly. */ | |
819 | if (strstr (c->line, "collect ") == c->line) | |
820 | error (_("The 'collect' command can only be used for tracepoints")); | |
821 | ||
51661e93 VP |
822 | if (strstr (c->line, "teval ") == c->line) |
823 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
824 | } |
825 | } | |
826 | ||
d77f58be SS |
827 | /* Encapsulate tests for different types of tracepoints. */ |
828 | ||
a7bdde9e | 829 | int |
d77f58be | 830 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 831 | { |
d77f58be | 832 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); |
a7bdde9e | 833 | } |
d77f58be | 834 | |
95a42b64 TT |
835 | /* A helper function that validsates that COMMANDS are valid for a |
836 | breakpoint. This function will throw an exception if a problem is | |
837 | found. */ | |
48cb2d85 | 838 | |
95a42b64 TT |
839 | static void |
840 | validate_commands_for_breakpoint (struct breakpoint *b, | |
841 | struct command_line *commands) | |
48cb2d85 | 842 | { |
d77f58be | 843 | if (is_tracepoint (b)) |
a7bdde9e VP |
844 | { |
845 | /* We need to verify that each top-level element of commands | |
846 | is valid for tracepoints, that there's at most one while-stepping | |
847 | element, and that while-stepping's body has valid tracing commands | |
848 | excluding nested while-stepping. */ | |
849 | struct command_line *c; | |
850 | struct command_line *while_stepping = 0; | |
851 | for (c = commands; c; c = c->next) | |
852 | { | |
a7bdde9e VP |
853 | if (c->control_type == while_stepping_control) |
854 | { | |
855 | if (b->type == bp_fast_tracepoint) | |
856 | error (_("The 'while-stepping' command cannot be used for fast tracepoint")); | |
857 | ||
858 | if (while_stepping) | |
859 | error (_("The 'while-stepping' command can be used only once")); | |
860 | else | |
861 | while_stepping = c; | |
862 | } | |
863 | } | |
864 | if (while_stepping) | |
865 | { | |
866 | struct command_line *c2; | |
867 | ||
868 | gdb_assert (while_stepping->body_count == 1); | |
869 | c2 = while_stepping->body_list[0]; | |
870 | for (; c2; c2 = c2->next) | |
871 | { | |
a7bdde9e VP |
872 | if (c2->control_type == while_stepping_control) |
873 | error (_("The 'while-stepping' command cannot be nested")); | |
874 | } | |
875 | } | |
876 | } | |
877 | else | |
878 | { | |
879 | check_no_tracepoint_commands (commands); | |
880 | } | |
95a42b64 TT |
881 | } |
882 | ||
883 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, | |
884 | validate that only allowed commands are included. | |
885 | */ | |
886 | ||
887 | void | |
888 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
889 | { | |
890 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 891 | |
9add0f1b TT |
892 | decref_counted_command_line (&b->commands); |
893 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
894 | breakpoints_changed (); |
895 | observer_notify_breakpoint_modified (b->number); | |
896 | } | |
897 | ||
95a42b64 TT |
898 | void |
899 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
900 | { |
901 | struct breakpoint *b = closure; | |
902 | validate_actionline (&line, b); | |
903 | } | |
904 | ||
95a42b64 TT |
905 | /* A structure used to pass information through |
906 | map_breakpoint_numbers. */ | |
907 | ||
908 | struct commands_info | |
909 | { | |
910 | /* True if the command was typed at a tty. */ | |
911 | int from_tty; | |
86b17b60 PA |
912 | |
913 | /* The breakpoint range spec. */ | |
914 | char *arg; | |
915 | ||
95a42b64 TT |
916 | /* Non-NULL if the body of the commands are being read from this |
917 | already-parsed command. */ | |
918 | struct command_line *control; | |
86b17b60 | 919 | |
95a42b64 TT |
920 | /* The command lines read from the user, or NULL if they have not |
921 | yet been read. */ | |
922 | struct counted_command_line *cmd; | |
923 | }; | |
924 | ||
925 | /* A callback for map_breakpoint_numbers that sets the commands for | |
926 | commands_command. */ | |
927 | ||
c906108c | 928 | static void |
95a42b64 | 929 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 930 | { |
95a42b64 | 931 | struct commands_info *info = data; |
c906108c | 932 | |
95a42b64 TT |
933 | if (info->cmd == NULL) |
934 | { | |
935 | struct command_line *l; | |
5c44784c | 936 | |
95a42b64 TT |
937 | if (info->control != NULL) |
938 | l = copy_command_lines (info->control->body_list[0]); | |
939 | else | |
86b17b60 PA |
940 | { |
941 | struct cleanup *old_chain; | |
942 | char *str; | |
c5aa993b | 943 | |
86b17b60 PA |
944 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
945 | info->arg); | |
946 | ||
947 | old_chain = make_cleanup (xfree, str); | |
948 | ||
949 | l = read_command_lines (str, | |
950 | info->from_tty, 1, | |
d77f58be | 951 | (is_tracepoint (b) |
86b17b60 PA |
952 | ? check_tracepoint_command : 0), |
953 | b); | |
954 | ||
955 | do_cleanups (old_chain); | |
956 | } | |
a7bdde9e | 957 | |
95a42b64 TT |
958 | info->cmd = alloc_counted_command_line (l); |
959 | } | |
960 | ||
961 | /* If a breakpoint was on the list more than once, we don't need to | |
962 | do anything. */ | |
963 | if (b->commands != info->cmd) | |
964 | { | |
965 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
966 | incref_counted_command_line (info->cmd); | |
967 | decref_counted_command_line (&b->commands); | |
968 | b->commands = info->cmd; | |
969 | breakpoints_changed (); | |
970 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 971 | } |
95a42b64 TT |
972 | } |
973 | ||
974 | static void | |
975 | commands_command_1 (char *arg, int from_tty, struct command_line *control) | |
976 | { | |
977 | struct cleanup *cleanups; | |
978 | struct commands_info info; | |
979 | ||
980 | info.from_tty = from_tty; | |
981 | info.control = control; | |
982 | info.cmd = NULL; | |
983 | /* If we read command lines from the user, then `info' will hold an | |
984 | extra reference to the commands that we must clean up. */ | |
985 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
986 | ||
987 | if (arg == NULL || !*arg) | |
988 | { | |
86b17b60 PA |
989 | if (breakpoint_count - prev_breakpoint_count > 1) |
990 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count); | |
95a42b64 TT |
991 | else if (breakpoint_count > 0) |
992 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
993 | else |
994 | { | |
995 | /* So that we don't try to free the incoming non-NULL | |
996 | argument in the cleanup below. Mapping breakpoint | |
997 | numbers will fail in this case. */ | |
998 | arg = NULL; | |
999 | } | |
95a42b64 | 1000 | } |
9766ced4 SS |
1001 | else |
1002 | /* The command loop has some static state, so we need to preserve | |
1003 | our argument. */ | |
1004 | arg = xstrdup (arg); | |
86b17b60 PA |
1005 | |
1006 | if (arg != NULL) | |
1007 | make_cleanup (xfree, arg); | |
1008 | ||
1009 | info.arg = arg; | |
95a42b64 TT |
1010 | |
1011 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1012 | ||
1013 | if (info.cmd == NULL) | |
1014 | error (_("No breakpoints specified.")); | |
1015 | ||
1016 | do_cleanups (cleanups); | |
1017 | } | |
1018 | ||
1019 | static void | |
1020 | commands_command (char *arg, int from_tty) | |
1021 | { | |
1022 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1023 | } |
40c03ae8 EZ |
1024 | |
1025 | /* Like commands_command, but instead of reading the commands from | |
1026 | input stream, takes them from an already parsed command structure. | |
1027 | ||
1028 | This is used by cli-script.c to DTRT with breakpoint commands | |
1029 | that are part of if and while bodies. */ | |
1030 | enum command_control_type | |
1031 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1032 | { | |
95a42b64 TT |
1033 | commands_command_1 (arg, 0, cmd); |
1034 | return simple_control; | |
40c03ae8 | 1035 | } |
876fa593 JK |
1036 | |
1037 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1038 | ||
1039 | static int | |
1040 | bp_location_has_shadow (struct bp_location *bl) | |
1041 | { | |
1042 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1043 | return 0; | |
1044 | if (!bl->inserted) | |
1045 | return 0; | |
1046 | if (bl->target_info.shadow_len == 0) | |
1047 | /* bp isn't valid, or doesn't shadow memory. */ | |
1048 | return 0; | |
1049 | return 1; | |
1050 | } | |
1051 | ||
8defab1a | 1052 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1053 | by replacing any memory breakpoints with their shadowed contents. |
1054 | ||
1055 | The range of shadowed area by each bp_location is: | |
1056 | b->address - bp_location_placed_address_before_address_max | |
1057 | up to b->address + bp_location_shadow_len_after_address_max | |
1058 | The range we were requested to resolve shadows for is: | |
1059 | memaddr ... memaddr + len | |
1060 | Thus the safe cutoff boundaries for performance optimization are | |
1061 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
1062 | and: | |
1063 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 1064 | |
8defab1a DJ |
1065 | void |
1066 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1067 | { |
876fa593 JK |
1068 | /* Left boundary, right boundary and median element of our binary search. */ |
1069 | unsigned bc_l, bc_r, bc; | |
1070 | ||
1071 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
1072 | safe to report lower value but a failure to report higher one. */ | |
1073 | ||
1074 | bc_l = 0; | |
1075 | bc_r = bp_location_count; | |
1076 | while (bc_l + 1 < bc_r) | |
1077 | { | |
1078 | struct bp_location *b; | |
1079 | ||
1080 | bc = (bc_l + bc_r) / 2; | |
1081 | b = bp_location[bc]; | |
1082 | ||
1083 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
1084 | Then advance the left boundary only if we are sure the BC element can | |
1085 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
1086 | ||
1087 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
1088 | we cannot miss a breakpoint with its shadow range tail still reaching | |
1089 | MEMADDR. */ | |
c5aa993b | 1090 | |
876fa593 JK |
1091 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
1092 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
1093 | bc_l = bc; | |
1094 | else | |
1095 | bc_r = bc; | |
1096 | } | |
1097 | ||
1098 | /* Now do full processing of the found relevant range of elements. */ | |
1099 | ||
1100 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1101 | { |
876fa593 JK |
1102 | struct bp_location *b = bp_location[bc]; |
1103 | CORE_ADDR bp_addr = 0; | |
1104 | int bp_size = 0; | |
1105 | int bptoffset = 0; | |
1106 | ||
ffce0d52 | 1107 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1108 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
1109 | b->owner->number); |
1110 | ||
876fa593 JK |
1111 | /* Performance optimization: any futher element can no longer affect BUF |
1112 | content. */ | |
1113 | ||
1114 | if (b->address >= bp_location_placed_address_before_address_max | |
1115 | && memaddr + len <= b->address | |
1116 | - bp_location_placed_address_before_address_max) | |
1117 | break; | |
1118 | ||
1119 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 1120 | continue; |
6c95b8df PA |
1121 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
1122 | current_program_space->aspace, 0)) | |
1123 | continue; | |
1124 | ||
c5aa993b JM |
1125 | /* Addresses and length of the part of the breakpoint that |
1126 | we need to copy. */ | |
8181d85f DJ |
1127 | bp_addr = b->target_info.placed_address; |
1128 | bp_size = b->target_info.shadow_len; | |
8defab1a | 1129 | |
c5aa993b JM |
1130 | if (bp_addr + bp_size <= memaddr) |
1131 | /* The breakpoint is entirely before the chunk of memory we | |
1132 | are reading. */ | |
1133 | continue; | |
8defab1a | 1134 | |
c5aa993b JM |
1135 | if (bp_addr >= memaddr + len) |
1136 | /* The breakpoint is entirely after the chunk of memory we are | |
1137 | reading. */ | |
1138 | continue; | |
c5aa993b | 1139 | |
8defab1a DJ |
1140 | /* Offset within shadow_contents. */ |
1141 | if (bp_addr < memaddr) | |
1142 | { | |
1143 | /* Only copy the second part of the breakpoint. */ | |
1144 | bp_size -= memaddr - bp_addr; | |
1145 | bptoffset = memaddr - bp_addr; | |
1146 | bp_addr = memaddr; | |
1147 | } | |
c5aa993b | 1148 | |
8defab1a DJ |
1149 | if (bp_addr + bp_size > memaddr + len) |
1150 | { | |
1151 | /* Only copy the first part of the breakpoint. */ | |
1152 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1153 | } | |
c5aa993b | 1154 | |
8defab1a DJ |
1155 | memcpy (buf + bp_addr - memaddr, |
1156 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 1157 | } |
c906108c | 1158 | } |
c906108c | 1159 | \f |
c5aa993b | 1160 | |
687595f9 | 1161 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1162 | static void |
687595f9 DJ |
1163 | insert_catchpoint (struct ui_out *uo, void *args) |
1164 | { | |
1165 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1166 | |
fe798b75 JB |
1167 | gdb_assert (b->type == bp_catchpoint); |
1168 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1169 | ||
1170 | b->ops->insert (b); | |
687595f9 DJ |
1171 | } |
1172 | ||
60e1c644 PA |
1173 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1174 | ||
a5606eee | 1175 | static int |
d77f58be | 1176 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1177 | { |
1178 | return (bpt->type == bp_hardware_watchpoint | |
1179 | || bpt->type == bp_read_watchpoint | |
1180 | || bpt->type == bp_access_watchpoint); | |
1181 | } | |
7270d8f2 | 1182 | |
60e1c644 PA |
1183 | /* Return true if BPT is of any watchpoint kind, hardware or |
1184 | software. */ | |
1185 | ||
1186 | static int | |
d77f58be | 1187 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1188 | { |
1189 | return (is_hardware_watchpoint (bpt) | |
1190 | || bpt->type == bp_watchpoint); | |
1191 | } | |
1192 | ||
fa4727a6 DJ |
1193 | /* Find the current value of a watchpoint on EXP. Return the value in |
1194 | *VALP and *RESULTP and the chain of intermediate and final values | |
1195 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
1196 | not need them. | |
1197 | ||
ccc57cf9 | 1198 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
1199 | be set to NULL. *RESULTP may be a lazy value, if the result could |
1200 | not be read from memory. It is used to determine whether a value | |
1201 | is user-specified (we should watch the whole value) or intermediate | |
1202 | (we should watch only the bit used to locate the final value). | |
1203 | ||
1204 | If the final value, or any intermediate value, could not be read | |
1205 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
1206 | set to any referenced values. *VALP will never be a lazy value. | |
1207 | This is the value which we store in struct breakpoint. | |
1208 | ||
1209 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
1210 | value chain. The caller must free the values individually. If | |
1211 | VAL_CHAIN is NULL, all generated values will be left on the value | |
1212 | chain. */ | |
1213 | ||
1214 | static void | |
1215 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
1216 | struct value **resultp, struct value **val_chain) | |
1217 | { | |
1218 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 1219 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
1220 | |
1221 | *valp = NULL; | |
1222 | if (resultp) | |
1223 | *resultp = NULL; | |
1224 | if (val_chain) | |
1225 | *val_chain = NULL; | |
1226 | ||
1227 | /* Evaluate the expression. */ | |
1228 | mark = value_mark (); | |
1229 | result = NULL; | |
ccc57cf9 PA |
1230 | |
1231 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1232 | { | |
1233 | result = evaluate_expression (exp); | |
1234 | } | |
1235 | if (ex.reason < 0) | |
1236 | { | |
1237 | /* Ignore memory errors, we want watchpoints pointing at | |
1238 | inaccessible memory to still be created; otherwise, throw the | |
1239 | error to some higher catcher. */ | |
1240 | switch (ex.error) | |
1241 | { | |
1242 | case MEMORY_ERROR: | |
1243 | break; | |
1244 | default: | |
1245 | throw_exception (ex); | |
1246 | break; | |
1247 | } | |
1248 | } | |
1249 | ||
fa4727a6 DJ |
1250 | new_mark = value_mark (); |
1251 | if (mark == new_mark) | |
1252 | return; | |
1253 | if (resultp) | |
1254 | *resultp = result; | |
1255 | ||
1256 | /* Make sure it's not lazy, so that after the target stops again we | |
1257 | have a non-lazy previous value to compare with. */ | |
1258 | if (result != NULL | |
1259 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
1260 | *valp = result; | |
1261 | ||
1262 | if (val_chain) | |
1263 | { | |
1264 | /* Return the chain of intermediate values. We use this to | |
1265 | decide which addresses to watch. */ | |
1266 | *val_chain = new_mark; | |
1267 | value_release_to_mark (mark); | |
1268 | } | |
1269 | } | |
1270 | ||
f6bc2008 PA |
1271 | /* Assuming that B is a watchpoint: returns true if the current thread |
1272 | and its running state are safe to evaluate or update watchpoint B. | |
1273 | Watchpoints on local expressions need to be evaluated in the | |
1274 | context of the thread that was current when the watchpoint was | |
1275 | created, and, that thread needs to be stopped to be able to select | |
1276 | the correct frame context. Watchpoints on global expressions can | |
1277 | be evaluated on any thread, and in any state. It is presently left | |
1278 | to the target allowing memory accesses when threads are | |
1279 | running. */ | |
1280 | ||
1281 | static int | |
1282 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1283 | { | |
1284 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1285 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1286 | && !is_executing (inferior_ptid))); | |
1287 | } | |
1288 | ||
567e1b4e JB |
1289 | /* Assuming that B is a watchpoint: |
1290 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1291 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1292 | - Evaluate the condition if there is one, and store the result |
1293 | in b->loc->cond. | |
a5606eee VP |
1294 | - Update the list of values that must be watched in B->loc. |
1295 | ||
bfa149ac | 1296 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1297 | If this is local watchpoint that is out of scope, delete it. |
1298 | ||
1299 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1300 | + inserted on each stop here. Normal breakpoints must never be removed | |
1301 | because they might be missed by a running thread when debugging in non-stop | |
1302 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1303 | processed here) are specific to each LWP since they are stored in each LWP's | |
1304 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1305 | order to be able to modify its hardware watchpoints. | |
1306 | ||
1307 | Hardware watchpoints must be reset exactly once after being presented to the | |
1308 | user. It cannot be done sooner, because it would reset the data used to | |
1309 | present the watchpoint hit to the user. And it must not be done later | |
1310 | because it could display the same single watchpoint hit during multiple GDB | |
1311 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1312 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1313 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1314 | memory content has not changed. | |
1315 | ||
1316 | The following constraints influence the location where we can reset hardware | |
1317 | watchpoints: | |
1318 | ||
1319 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1320 | several times when GDB stops. | |
1321 | ||
1322 | [linux] | |
1323 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1324 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1325 | reason for stopping, and all the other hits are presented later, one after | |
1326 | the other, each time the user requests the execution to be resumed. | |
1327 | Execution is not resumed for the threads still having pending hit event | |
1328 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1329 | the inferior on the first stop the thread hit event is kept being reported | |
1330 | from its cached value by linux_nat_stopped_data_address until the real | |
1331 | thread resume happens after the watchpoint gets presented and thus its | |
1332 | LWP_INFO->STATUS gets reset. | |
1333 | ||
1334 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1335 | removal from inferior. */ | |
1336 | ||
b40ce68a | 1337 | static void |
a5606eee | 1338 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1339 | { |
a5606eee | 1340 | int within_current_scope; |
a5606eee | 1341 | struct frame_id saved_frame_id; |
66076460 | 1342 | int frame_saved; |
a5606eee | 1343 | |
f6bc2008 PA |
1344 | /* If this is a local watchpoint, we only want to check if the |
1345 | watchpoint frame is in scope if the current thread is the thread | |
1346 | that was used to create the watchpoint. */ | |
1347 | if (!watchpoint_in_thread_scope (b)) | |
1348 | return; | |
1349 | ||
876fa593 | 1350 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1351 | update_global_locations will eventually delete them and remove |
1352 | breakpoints if needed. */ | |
a5606eee VP |
1353 | b->loc = NULL; |
1354 | ||
1355 | if (b->disposition == disp_del_at_next_stop) | |
1356 | return; | |
1357 | ||
66076460 | 1358 | frame_saved = 0; |
a5606eee VP |
1359 | |
1360 | /* Determine if the watchpoint is within scope. */ | |
1361 | if (b->exp_valid_block == NULL) | |
1362 | within_current_scope = 1; | |
1363 | else | |
1364 | { | |
1365 | struct frame_info *fi; | |
66076460 DJ |
1366 | |
1367 | /* Save the current frame's ID so we can restore it after | |
1368 | evaluating the watchpoint expression on its own frame. */ | |
1369 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1370 | took a frame parameter, so that we didn't have to change the | |
1371 | selected frame. */ | |
1372 | frame_saved = 1; | |
1373 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1374 | ||
a5606eee VP |
1375 | fi = frame_find_by_id (b->watchpoint_frame); |
1376 | within_current_scope = (fi != NULL); | |
1377 | if (within_current_scope) | |
1378 | select_frame (fi); | |
1379 | } | |
1380 | ||
1381 | if (within_current_scope && reparse) | |
1382 | { | |
1383 | char *s; | |
1384 | if (b->exp) | |
1385 | { | |
1386 | xfree (b->exp); | |
1387 | b->exp = NULL; | |
1388 | } | |
1389 | s = b->exp_string; | |
1390 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1391 | /* If the meaning of expression itself changed, the old value is | |
1392 | no longer relevant. We don't want to report a watchpoint hit | |
1393 | to the user when the old value and the new value may actually | |
1394 | be completely different objects. */ | |
1395 | value_free (b->val); | |
fa4727a6 DJ |
1396 | b->val = NULL; |
1397 | b->val_valid = 0; | |
60e1c644 PA |
1398 | |
1399 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1400 | expression is stored in the breakpoint object, not in the | |
1401 | locations (re)created below. */ | |
1402 | if (b->cond_string != NULL) | |
1403 | { | |
1404 | if (b->cond_exp != NULL) | |
1405 | { | |
1406 | xfree (b->cond_exp); | |
1407 | b->cond_exp = NULL; | |
1408 | } | |
1409 | ||
1410 | s = b->cond_string; | |
1411 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1412 | } | |
a5606eee | 1413 | } |
a5606eee VP |
1414 | |
1415 | /* If we failed to parse the expression, for example because | |
1416 | it refers to a global variable in a not-yet-loaded shared library, | |
1417 | don't try to insert watchpoint. We don't automatically delete | |
1418 | such watchpoint, though, since failure to parse expression | |
1419 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1420 | if ( !target_has_execution) |
1421 | { | |
1422 | /* Without execution, memory can't change. No use to try and | |
1423 | set watchpoint locations. The watchpoint will be reset when | |
1424 | the target gains execution, through breakpoint_re_set. */ | |
1425 | } | |
1426 | else if (within_current_scope && b->exp) | |
a5606eee | 1427 | { |
fa4727a6 | 1428 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1429 | struct program_space *frame_pspace; |
a5606eee | 1430 | |
fa4727a6 | 1431 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1432 | |
a5606eee VP |
1433 | /* Avoid setting b->val if it's already set. The meaning of |
1434 | b->val is 'the last value' user saw, and we should update | |
1435 | it only if we reported that last value to user. As it | |
1436 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1437 | if (!b->val_valid) |
1438 | { | |
1439 | b->val = v; | |
1440 | b->val_valid = 1; | |
1441 | } | |
a5606eee | 1442 | |
db2ad4c3 JK |
1443 | /* Change the type of breakpoint between hardware assisted or an |
1444 | ordinary watchpoint depending on the hardware support and free | |
1445 | hardware slots. REPARSE is set when the inferior is started. */ | |
1446 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1447 | && reparse) | |
1448 | { | |
ca2d49e8 | 1449 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1450 | |
7b838ca2 TJB |
1451 | /* We need to determine how many resources are already used |
1452 | for all other hardware watchpoints to see if we still have | |
1453 | enough resources to also fit this watchpoint in as well. | |
1454 | To avoid the hw_watchpoint_used_count call below from counting | |
1455 | this watchpoint, make sure that it is marked as a software | |
1456 | watchpoint. */ | |
1457 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1458 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1459 | &other_type_used); | |
1460 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1461 | ||
ca2d49e8 | 1462 | if (!mem_cnt) |
db2ad4c3 JK |
1463 | b->type = bp_watchpoint; |
1464 | else | |
ca2d49e8 | 1465 | { |
d92524f1 | 1466 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1467 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1468 | if (target_resources_ok <= 0) | |
1469 | b->type = bp_watchpoint; | |
1470 | else | |
1471 | b->type = bp_hardware_watchpoint; | |
1472 | } | |
db2ad4c3 JK |
1473 | } |
1474 | ||
2d134ed3 PA |
1475 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1476 | ||
a5606eee | 1477 | /* Look at each value on the value chain. */ |
fa4727a6 | 1478 | for (v = val_chain; v; v = next) |
a5606eee VP |
1479 | { |
1480 | /* If it's a memory location, and GDB actually needed | |
1481 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1482 | must watch it. If the first value returned is |
1483 | still lazy, that means an error occurred reading it; | |
1484 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1485 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1486 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1487 | { |
1488 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1489 | |
a5606eee VP |
1490 | /* We only watch structs and arrays if user asked |
1491 | for it explicitly, never if they just happen to | |
1492 | appear in the middle of some value chain. */ | |
fa4727a6 | 1493 | if (v == result |
a5606eee VP |
1494 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1495 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1496 | { | |
1497 | CORE_ADDR addr; | |
1498 | int len, type; | |
1499 | struct bp_location *loc, **tmp; | |
1500 | ||
42ae5230 | 1501 | addr = value_address (v); |
a5606eee VP |
1502 | len = TYPE_LENGTH (value_type (v)); |
1503 | type = hw_write; | |
1504 | if (b->type == bp_read_watchpoint) | |
1505 | type = hw_read; | |
1506 | else if (b->type == bp_access_watchpoint) | |
1507 | type = hw_access; | |
1508 | ||
39d61571 | 1509 | loc = allocate_bp_location (b); |
a5606eee VP |
1510 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1511 | ; | |
1512 | *tmp = loc; | |
a6d9a66e | 1513 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1514 | |
1515 | loc->pspace = frame_pspace; | |
a5606eee VP |
1516 | loc->address = addr; |
1517 | loc->length = len; | |
1518 | loc->watchpoint_type = type; | |
1519 | } | |
1520 | } | |
1521 | ||
1522 | next = value_next (v); | |
1523 | if (v != b->val) | |
1524 | value_free (v); | |
1525 | } | |
1526 | ||
c7437ca6 PA |
1527 | /* If a software watchpoint is not watching any memory, then the |
1528 | above left it without any location set up. But, | |
1529 | bpstat_stop_status requires a location to be able to report | |
1530 | stops, so make sure there's at least a dummy one. */ | |
1531 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1532 | { | |
1533 | b->loc = allocate_bp_location (b); | |
1534 | b->loc->pspace = frame_pspace; | |
1535 | b->loc->address = -1; | |
1536 | b->loc->length = -1; | |
1537 | b->loc->watchpoint_type = -1; | |
1538 | } | |
a5606eee VP |
1539 | } |
1540 | else if (!within_current_scope) | |
7270d8f2 | 1541 | { |
a5606eee | 1542 | printf_filtered (_("\ |
567e1b4e | 1543 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1544 | in which its expression is valid.\n"), |
1545 | b->number); | |
1546 | if (b->related_breakpoint) | |
60e1c644 PA |
1547 | { |
1548 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1549 | b->related_breakpoint->related_breakpoint = NULL; | |
1550 | b->related_breakpoint= NULL; | |
1551 | } | |
a5606eee | 1552 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1553 | } |
a5606eee VP |
1554 | |
1555 | /* Restore the selected frame. */ | |
66076460 DJ |
1556 | if (frame_saved) |
1557 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1558 | } |
1559 | ||
a5606eee | 1560 | |
74960c60 VP |
1561 | /* Returns 1 iff breakpoint location should be |
1562 | inserted in the inferior. */ | |
1563 | static int | |
1564 | should_be_inserted (struct bp_location *bpt) | |
1565 | { | |
1566 | if (!breakpoint_enabled (bpt->owner)) | |
1567 | return 0; | |
1568 | ||
1569 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1570 | return 0; | |
1571 | ||
1572 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1573 | return 0; | |
1574 | ||
56710373 PA |
1575 | /* This is set for example, when we're attached to the parent of a |
1576 | vfork, and have detached from the child. The child is running | |
1577 | free, and we expect it to do an exec or exit, at which point the | |
1578 | OS makes the parent schedulable again (and the target reports | |
1579 | that the vfork is done). Until the child is done with the shared | |
1580 | memory region, do not insert breakpoints in the parent, otherwise | |
1581 | the child could still trip on the parent's breakpoints. Since | |
1582 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1583 | if (bpt->pspace->breakpoints_not_allowed) | |
1584 | return 0; | |
1585 | ||
1042e4c0 SS |
1586 | /* Tracepoints are inserted by the target at a time of its choosing, |
1587 | not by us. */ | |
d77f58be | 1588 | if (is_tracepoint (bpt->owner)) |
1042e4c0 SS |
1589 | return 0; |
1590 | ||
74960c60 VP |
1591 | return 1; |
1592 | } | |
1593 | ||
879bfdc2 DJ |
1594 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1595 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1596 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1597 | |
1598 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1599 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1600 | static int |
879bfdc2 | 1601 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1602 | struct ui_file *tmp_error_stream, |
fa3a767f | 1603 | int *disabled_breaks, |
26bb91f3 | 1604 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1605 | { |
1606 | int val = 0; | |
1607 | ||
74960c60 | 1608 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1609 | return 0; |
1610 | ||
8181d85f DJ |
1611 | /* Initialize the target-specific information. */ |
1612 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1613 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1614 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1615 | |
879bfdc2 DJ |
1616 | if (bpt->loc_type == bp_loc_software_breakpoint |
1617 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1618 | { | |
765dc015 VP |
1619 | if (bpt->owner->type != bp_hardware_breakpoint) |
1620 | { | |
1621 | /* If the explicitly specified breakpoint type | |
1622 | is not hardware breakpoint, check the memory map to see | |
1623 | if the breakpoint address is in read only memory or not. | |
1624 | Two important cases are: | |
1625 | - location type is not hardware breakpoint, memory | |
1626 | is readonly. We change the type of the location to | |
1627 | hardware breakpoint. | |
1628 | - location type is hardware breakpoint, memory is read-write. | |
1629 | This means we've previously made the location hardware one, but | |
1630 | then the memory map changed, so we undo. | |
1631 | ||
1632 | When breakpoints are removed, remove_breakpoints will | |
1633 | use location types we've just set here, the only possible | |
1634 | problem is that memory map has changed during running program, | |
1635 | but it's not going to work anyway with current gdb. */ | |
1636 | struct mem_region *mr | |
1637 | = lookup_mem_region (bpt->target_info.placed_address); | |
1638 | ||
1639 | if (mr) | |
1640 | { | |
1641 | if (automatic_hardware_breakpoints) | |
1642 | { | |
765dc015 VP |
1643 | enum bp_loc_type new_type; |
1644 | ||
1645 | if (mr->attrib.mode != MEM_RW) | |
1646 | new_type = bp_loc_hardware_breakpoint; | |
1647 | else | |
1648 | new_type = bp_loc_software_breakpoint; | |
1649 | ||
1650 | if (new_type != bpt->loc_type) | |
1651 | { | |
1652 | static int said = 0; | |
1653 | bpt->loc_type = new_type; | |
1654 | if (!said) | |
1655 | { | |
1656 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1657 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1658 | said = 1; |
1659 | } | |
1660 | } | |
1661 | } | |
1662 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1663 | && mr->attrib.mode != MEM_RW) | |
1664 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1665 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1666 | } |
1667 | } | |
1668 | ||
879bfdc2 DJ |
1669 | /* First check to see if we have to handle an overlay. */ |
1670 | if (overlay_debugging == ovly_off | |
1671 | || bpt->section == NULL | |
1672 | || !(section_is_overlay (bpt->section))) | |
1673 | { | |
1674 | /* No overlay handling: just set the breakpoint. */ | |
1675 | ||
1676 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1677 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1678 | &bpt->target_info); | |
879bfdc2 | 1679 | else |
a6d9a66e UW |
1680 | val = target_insert_breakpoint (bpt->gdbarch, |
1681 | &bpt->target_info); | |
879bfdc2 DJ |
1682 | } |
1683 | else | |
1684 | { | |
1685 | /* This breakpoint is in an overlay section. | |
1686 | Shall we set a breakpoint at the LMA? */ | |
1687 | if (!overlay_events_enabled) | |
1688 | { | |
1689 | /* Yes -- overlay event support is not active, | |
1690 | so we must try to set a breakpoint at the LMA. | |
1691 | This will not work for a hardware breakpoint. */ | |
1692 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1693 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1694 | bpt->owner->number); |
1695 | else | |
1696 | { | |
1697 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1698 | bpt->section); | |
1699 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1700 | bpt->overlay_target_info = bpt->target_info; |
1701 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1702 | val = target_insert_breakpoint (bpt->gdbarch, |
1703 | &bpt->overlay_target_info); | |
879bfdc2 | 1704 | if (val != 0) |
99361f52 DE |
1705 | fprintf_unfiltered (tmp_error_stream, |
1706 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1707 | bpt->owner->number); |
1708 | } | |
1709 | } | |
1710 | /* Shall we set a breakpoint at the VMA? */ | |
1711 | if (section_is_mapped (bpt->section)) | |
1712 | { | |
1713 | /* Yes. This overlay section is mapped into memory. */ | |
1714 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1715 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1716 | &bpt->target_info); | |
879bfdc2 | 1717 | else |
a6d9a66e UW |
1718 | val = target_insert_breakpoint (bpt->gdbarch, |
1719 | &bpt->target_info); | |
879bfdc2 DJ |
1720 | } |
1721 | else | |
1722 | { | |
1723 | /* No. This breakpoint will not be inserted. | |
1724 | No error, but do not mark the bp as 'inserted'. */ | |
1725 | return 0; | |
1726 | } | |
1727 | } | |
1728 | ||
1729 | if (val) | |
1730 | { | |
1731 | /* Can't set the breakpoint. */ | |
6c95b8df | 1732 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1733 | { |
1734 | /* See also: disable_breakpoints_in_shlibs. */ | |
1735 | val = 0; | |
0d381245 | 1736 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1737 | if (!*disabled_breaks) |
1738 | { | |
1739 | fprintf_unfiltered (tmp_error_stream, | |
1740 | "Cannot insert breakpoint %d.\n", | |
1741 | bpt->owner->number); | |
1742 | fprintf_unfiltered (tmp_error_stream, | |
1743 | "Temporarily disabling shared library breakpoints:\n"); | |
1744 | } | |
1745 | *disabled_breaks = 1; | |
1746 | fprintf_unfiltered (tmp_error_stream, | |
1747 | "breakpoint #%d\n", bpt->owner->number); | |
1748 | } | |
1749 | else | |
879bfdc2 | 1750 | { |
879bfdc2 DJ |
1751 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1752 | { | |
1753 | *hw_breakpoint_error = 1; | |
1754 | fprintf_unfiltered (tmp_error_stream, | |
1755 | "Cannot insert hardware breakpoint %d.\n", | |
1756 | bpt->owner->number); | |
1757 | } | |
1758 | else | |
1759 | { | |
1760 | fprintf_unfiltered (tmp_error_stream, | |
1761 | "Cannot insert breakpoint %d.\n", | |
1762 | bpt->owner->number); | |
1763 | fprintf_filtered (tmp_error_stream, | |
1764 | "Error accessing memory address "); | |
5af949e3 UW |
1765 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1766 | tmp_error_stream); | |
879bfdc2 DJ |
1767 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1768 | safe_strerror (val)); | |
1769 | } | |
1770 | ||
1771 | } | |
1772 | } | |
1773 | else | |
1774 | bpt->inserted = 1; | |
1775 | ||
1776 | return val; | |
1777 | } | |
1778 | ||
1779 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1780 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1781 | watchpoints. It's not clear that it's necessary... */ | |
1782 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1783 | { | |
85d721b8 | 1784 | val = target_insert_watchpoint (bpt->address, |
a5606eee VP |
1785 | bpt->length, |
1786 | bpt->watchpoint_type); | |
85d721b8 PA |
1787 | |
1788 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1789 | supported, try emulating one with an access watchpoint. */ | |
1790 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1791 | { | |
1792 | struct bp_location *loc, **loc_temp; | |
1793 | ||
1794 | /* But don't try to insert it, if there's already another | |
1795 | hw_access location that would be considered a duplicate | |
1796 | of this one. */ | |
1797 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1798 | if (loc != bpt | |
1799 | && loc->watchpoint_type == hw_access | |
1800 | && watchpoint_locations_match (bpt, loc)) | |
1801 | { | |
1802 | bpt->duplicate = 1; | |
1803 | bpt->inserted = 1; | |
1804 | bpt->target_info = loc->target_info; | |
1805 | bpt->watchpoint_type = hw_access; | |
1806 | val = 0; | |
1807 | break; | |
1808 | } | |
1809 | ||
1810 | if (val == 1) | |
1811 | { | |
1812 | val = target_insert_watchpoint (bpt->address, | |
1813 | bpt->length, | |
1814 | hw_access); | |
1815 | if (val == 0) | |
1816 | bpt->watchpoint_type = hw_access; | |
1817 | } | |
1818 | } | |
1819 | ||
1820 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1821 | } |
1822 | ||
fe798b75 | 1823 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1824 | { |
71fff37b AC |
1825 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1826 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1827 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1828 | bpt->owner->number); | |
1829 | if (e.reason < 0) | |
879bfdc2 DJ |
1830 | bpt->owner->enable_state = bp_disabled; |
1831 | else | |
1832 | bpt->inserted = 1; | |
1640b821 DJ |
1833 | |
1834 | /* We've already printed an error message if there was a problem | |
1835 | inserting this catchpoint, and we've disabled the catchpoint, | |
1836 | so just return success. */ | |
1837 | return 0; | |
879bfdc2 DJ |
1838 | } |
1839 | ||
1840 | return 0; | |
1841 | } | |
1842 | ||
6c95b8df PA |
1843 | /* This function is called when program space PSPACE is about to be |
1844 | deleted. It takes care of updating breakpoints to not reference | |
1845 | PSPACE anymore. */ | |
1846 | ||
1847 | void | |
1848 | breakpoint_program_space_exit (struct program_space *pspace) | |
1849 | { | |
1850 | struct breakpoint *b, *b_temp; | |
876fa593 | 1851 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1852 | |
1853 | /* Remove any breakpoint that was set through this program space. */ | |
1854 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1855 | { | |
1856 | if (b->pspace == pspace) | |
1857 | delete_breakpoint (b); | |
1858 | } | |
1859 | ||
1860 | /* Breakpoints set through other program spaces could have locations | |
1861 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1862 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1863 | { |
1864 | struct bp_location *tmp; | |
1865 | ||
1866 | if (loc->pspace == pspace) | |
1867 | { | |
1868 | if (loc->owner->loc == loc) | |
1869 | loc->owner->loc = loc->next; | |
1870 | else | |
1871 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1872 | if (tmp->next == loc) | |
1873 | { | |
1874 | tmp->next = loc->next; | |
1875 | break; | |
1876 | } | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | /* Now update the global location list to permanently delete the | |
1881 | removed locations above. */ | |
1882 | update_global_location_list (0); | |
1883 | } | |
1884 | ||
74960c60 VP |
1885 | /* Make sure all breakpoints are inserted in inferior. |
1886 | Throws exception on any error. | |
1887 | A breakpoint that is already inserted won't be inserted | |
1888 | again, so calling this function twice is safe. */ | |
1889 | void | |
1890 | insert_breakpoints (void) | |
1891 | { | |
1892 | struct breakpoint *bpt; | |
1893 | ||
1894 | ALL_BREAKPOINTS (bpt) | |
1895 | if (is_hardware_watchpoint (bpt)) | |
1896 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1897 | ||
b60e7edf | 1898 | update_global_location_list (1); |
74960c60 | 1899 | |
c35b1492 PA |
1900 | /* update_global_location_list does not insert breakpoints when |
1901 | always_inserted_mode is not enabled. Explicitly insert them | |
1902 | now. */ | |
1903 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1904 | insert_breakpoint_locations (); |
1905 | } | |
1906 | ||
c906108c SS |
1907 | /* insert_breakpoints is used when starting or continuing the program. |
1908 | remove_breakpoints is used when the program stops. | |
1909 | Both return zero if successful, | |
1910 | or an `errno' value if could not write the inferior. */ | |
1911 | ||
74960c60 VP |
1912 | static void |
1913 | insert_breakpoint_locations (void) | |
c906108c | 1914 | { |
a5606eee | 1915 | struct breakpoint *bpt; |
876fa593 | 1916 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1917 | int error = 0; |
c906108c SS |
1918 | int val = 0; |
1919 | int disabled_breaks = 0; | |
81d0cc19 | 1920 | int hw_breakpoint_error = 0; |
c906108c | 1921 | |
81d0cc19 | 1922 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1923 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1924 | |
81d0cc19 GS |
1925 | /* Explicitly mark the warning -- this will only be printed if |
1926 | there was an error. */ | |
1927 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1928 | |
1929 | save_current_space_and_thread (); | |
1930 | ||
876fa593 | 1931 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1932 | { |
74960c60 | 1933 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1934 | continue; |
1935 | ||
f365de73 AS |
1936 | /* There is no point inserting thread-specific breakpoints if the |
1937 | thread no longer exists. */ | |
1938 | if (b->owner->thread != -1 | |
1939 | && !valid_thread_id (b->owner->thread)) | |
1940 | continue; | |
1941 | ||
6c95b8df PA |
1942 | switch_to_program_space_and_thread (b->pspace); |
1943 | ||
1944 | /* For targets that support global breakpoints, there's no need | |
1945 | to select an inferior to insert breakpoint to. In fact, even | |
1946 | if we aren't attached to any process yet, we should still | |
1947 | insert breakpoints. */ | |
1948 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1949 | && ptid_equal (inferior_ptid, null_ptid)) | |
1950 | continue; | |
1951 | ||
879bfdc2 | 1952 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1953 | &disabled_breaks, |
879bfdc2 DJ |
1954 | &hw_breakpoint_error); |
1955 | if (val) | |
e236ba44 | 1956 | error = val; |
879bfdc2 | 1957 | } |
c906108c | 1958 | |
a5606eee VP |
1959 | /* If we failed to insert all locations of a watchpoint, |
1960 | remove them, as half-inserted watchpoint is of limited use. */ | |
1961 | ALL_BREAKPOINTS (bpt) | |
1962 | { | |
1963 | int some_failed = 0; | |
1964 | struct bp_location *loc; | |
1965 | ||
1966 | if (!is_hardware_watchpoint (bpt)) | |
1967 | continue; | |
1968 | ||
d6b74ac4 | 1969 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1970 | continue; |
74960c60 VP |
1971 | |
1972 | if (bpt->disposition == disp_del_at_next_stop) | |
1973 | continue; | |
a5606eee VP |
1974 | |
1975 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1976 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1977 | { |
1978 | some_failed = 1; | |
1979 | break; | |
1980 | } | |
1981 | if (some_failed) | |
1982 | { | |
1983 | for (loc = bpt->loc; loc; loc = loc->next) | |
1984 | if (loc->inserted) | |
1985 | remove_breakpoint (loc, mark_uninserted); | |
1986 | ||
1987 | hw_breakpoint_error = 1; | |
1988 | fprintf_unfiltered (tmp_error_stream, | |
1989 | "Could not insert hardware watchpoint %d.\n", | |
1990 | bpt->number); | |
1991 | error = -1; | |
1992 | } | |
1993 | } | |
1994 | ||
e236ba44 | 1995 | if (error) |
81d0cc19 GS |
1996 | { |
1997 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1998 | message about possibly exhausted resources. */ | |
879bfdc2 | 1999 | if (hw_breakpoint_error) |
81d0cc19 | 2000 | { |
c6510018 MS |
2001 | fprintf_unfiltered (tmp_error_stream, |
2002 | "Could not insert hardware breakpoints:\n\ | |
2003 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2004 | } |
81d0cc19 GS |
2005 | target_terminal_ours_for_output (); |
2006 | error_stream (tmp_error_stream); | |
2007 | } | |
f7545552 TT |
2008 | |
2009 | do_cleanups (cleanups); | |
c906108c SS |
2010 | } |
2011 | ||
c906108c | 2012 | int |
fba45db2 | 2013 | remove_breakpoints (void) |
c906108c | 2014 | { |
876fa593 | 2015 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2016 | int val = 0; |
c906108c | 2017 | |
876fa593 | 2018 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2019 | { |
0bde7532 | 2020 | if (b->inserted) |
3a1bae8e | 2021 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 2022 | } |
3a1bae8e | 2023 | return val; |
c906108c SS |
2024 | } |
2025 | ||
6c95b8df PA |
2026 | /* Remove breakpoints of process PID. */ |
2027 | ||
2028 | int | |
2029 | remove_breakpoints_pid (int pid) | |
2030 | { | |
876fa593 | 2031 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
2032 | int val; |
2033 | struct inferior *inf = find_inferior_pid (pid); | |
2034 | ||
876fa593 | 2035 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
2036 | { |
2037 | if (b->pspace != inf->pspace) | |
2038 | continue; | |
2039 | ||
2040 | if (b->inserted) | |
2041 | { | |
2042 | val = remove_breakpoint (b, mark_uninserted); | |
2043 | if (val != 0) | |
2044 | return val; | |
2045 | } | |
2046 | } | |
2047 | return 0; | |
2048 | } | |
2049 | ||
692590c1 | 2050 | int |
80ce1ecb | 2051 | remove_hw_watchpoints (void) |
692590c1 | 2052 | { |
876fa593 | 2053 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2054 | int val = 0; |
692590c1 | 2055 | |
876fa593 | 2056 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 2057 | { |
0bde7532 | 2058 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 2059 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 2060 | } |
3a1bae8e | 2061 | return val; |
692590c1 MS |
2062 | } |
2063 | ||
c906108c | 2064 | int |
fba45db2 | 2065 | reattach_breakpoints (int pid) |
c906108c | 2066 | { |
6c95b8df | 2067 | struct cleanup *old_chain; |
876fa593 | 2068 | struct bp_location *b, **bp_tmp; |
c906108c | 2069 | int val; |
a4954f26 | 2070 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2071 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2072 | struct inferior *inf; |
2073 | struct thread_info *tp; | |
2074 | ||
2075 | tp = any_live_thread_of_process (pid); | |
2076 | if (tp == NULL) | |
2077 | return 1; | |
2078 | ||
2079 | inf = find_inferior_pid (pid); | |
2080 | old_chain = save_inferior_ptid (); | |
2081 | ||
2082 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2083 | |
2084 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2085 | |
876fa593 | 2086 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2087 | { |
6c95b8df PA |
2088 | if (b->pspace != inf->pspace) |
2089 | continue; | |
2090 | ||
0bde7532 | 2091 | if (b->inserted) |
c5aa993b | 2092 | { |
a4954f26 DJ |
2093 | b->inserted = 0; |
2094 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 2095 | &dummy1, &dummy2); |
c5aa993b JM |
2096 | if (val != 0) |
2097 | { | |
ce696e05 | 2098 | do_cleanups (old_chain); |
c5aa993b JM |
2099 | return val; |
2100 | } | |
2101 | } | |
2102 | } | |
ce696e05 | 2103 | do_cleanups (old_chain); |
c906108c SS |
2104 | return 0; |
2105 | } | |
2106 | ||
e58b0e63 PA |
2107 | static int internal_breakpoint_number = -1; |
2108 | ||
e62c965a | 2109 | static struct breakpoint * |
a6d9a66e UW |
2110 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2111 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2112 | { |
e62c965a PP |
2113 | struct symtab_and_line sal; |
2114 | struct breakpoint *b; | |
2115 | ||
2116 | init_sal (&sal); /* initialize to zeroes */ | |
2117 | ||
2118 | sal.pc = address; | |
2119 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2120 | sal.pspace = current_program_space; |
e62c965a | 2121 | |
a6d9a66e | 2122 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2123 | b->number = internal_breakpoint_number--; |
2124 | b->disposition = disp_donttouch; | |
2125 | ||
2126 | return b; | |
2127 | } | |
2128 | ||
2129 | static void | |
69de3c6a | 2130 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2131 | { |
69de3c6a | 2132 | struct objfile *objfile; |
e62c965a | 2133 | |
69de3c6a PP |
2134 | ALL_OBJFILES (objfile) |
2135 | { | |
2136 | struct breakpoint *b; | |
2137 | struct minimal_symbol *m; | |
2138 | ||
2139 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2140 | if (m == NULL) | |
2141 | continue; | |
e62c965a | 2142 | |
a6d9a66e UW |
2143 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2144 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2145 | bp_overlay_event); |
2146 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2147 | |
69de3c6a PP |
2148 | if (overlay_debugging == ovly_auto) |
2149 | { | |
2150 | b->enable_state = bp_enabled; | |
2151 | overlay_events_enabled = 1; | |
2152 | } | |
2153 | else | |
2154 | { | |
2155 | b->enable_state = bp_disabled; | |
2156 | overlay_events_enabled = 0; | |
2157 | } | |
e62c965a PP |
2158 | } |
2159 | update_global_location_list (1); | |
2160 | } | |
2161 | ||
0fd8e87f UW |
2162 | static void |
2163 | create_longjmp_master_breakpoint (char *func_name) | |
2164 | { | |
6c95b8df | 2165 | struct program_space *pspace; |
0fd8e87f | 2166 | struct objfile *objfile; |
6c95b8df PA |
2167 | struct cleanup *old_chain; |
2168 | ||
2169 | old_chain = save_current_program_space (); | |
0fd8e87f | 2170 | |
6c95b8df | 2171 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2172 | ALL_OBJFILES (objfile) |
2173 | { | |
2174 | struct breakpoint *b; | |
2175 | struct minimal_symbol *m; | |
2176 | ||
2177 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2178 | continue; | |
2179 | ||
6c95b8df PA |
2180 | set_current_program_space (pspace); |
2181 | ||
0fd8e87f UW |
2182 | m = lookup_minimal_symbol_text (func_name, objfile); |
2183 | if (m == NULL) | |
2184 | continue; | |
2185 | ||
a6d9a66e UW |
2186 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2187 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2188 | bp_longjmp_master); |
2189 | b->addr_string = xstrdup (func_name); | |
2190 | b->enable_state = bp_disabled; | |
2191 | } | |
2192 | update_global_location_list (1); | |
6c95b8df PA |
2193 | |
2194 | do_cleanups (old_chain); | |
0fd8e87f UW |
2195 | } |
2196 | ||
aa7d318d TT |
2197 | /* Create a master std::terminate breakpoint. The actual function |
2198 | looked for is named FUNC_NAME. */ | |
2199 | static void | |
2200 | create_std_terminate_master_breakpoint (const char *func_name) | |
2201 | { | |
2202 | struct program_space *pspace; | |
2203 | struct objfile *objfile; | |
2204 | struct cleanup *old_chain; | |
2205 | ||
2206 | old_chain = save_current_program_space (); | |
2207 | ||
2208 | ALL_PSPACES (pspace) | |
2209 | ALL_OBJFILES (objfile) | |
2210 | { | |
2211 | struct breakpoint *b; | |
2212 | struct minimal_symbol *m; | |
2213 | ||
2214 | set_current_program_space (pspace); | |
2215 | ||
2216 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2217 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2218 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2219 | continue; | |
2220 | ||
2221 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2222 | SYMBOL_VALUE_ADDRESS (m), | |
2223 | bp_std_terminate_master); | |
2224 | b->addr_string = xstrdup (func_name); | |
2225 | b->enable_state = bp_disabled; | |
2226 | } | |
2227 | update_global_location_list (1); | |
2228 | ||
2229 | do_cleanups (old_chain); | |
2230 | } | |
2231 | ||
c906108c | 2232 | void |
fba45db2 | 2233 | update_breakpoints_after_exec (void) |
c906108c | 2234 | { |
c5aa993b JM |
2235 | struct breakpoint *b; |
2236 | struct breakpoint *temp; | |
876fa593 | 2237 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2238 | |
25b22b0a PA |
2239 | /* We're about to delete breakpoints from GDB's lists. If the |
2240 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2241 | writing the breakpoints' "shadow contents" back into memory. The | |
2242 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2243 | do that. Instead, the target is responsible from marking | |
2244 | breakpoints out as soon as it detects an exec. We don't do that | |
2245 | here instead, because there may be other attempts to delete | |
2246 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2247 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2248 | if (bploc->pspace == current_program_space) |
2249 | gdb_assert (!bploc->inserted); | |
c906108c SS |
2250 | |
2251 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2252 | { |
6c95b8df PA |
2253 | if (b->pspace != current_program_space) |
2254 | continue; | |
2255 | ||
c5aa993b JM |
2256 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
2257 | if (b->type == bp_shlib_event) | |
2258 | { | |
2259 | delete_breakpoint (b); | |
2260 | continue; | |
2261 | } | |
c906108c | 2262 | |
4efc6507 DE |
2263 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
2264 | if (b->type == bp_jit_event) | |
2265 | { | |
2266 | delete_breakpoint (b); | |
2267 | continue; | |
2268 | } | |
2269 | ||
1900040c | 2270 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2271 | as must overlay event and longjmp master breakpoints. */ |
2272 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
aa7d318d | 2273 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master) |
c4093a6a JM |
2274 | { |
2275 | delete_breakpoint (b); | |
2276 | continue; | |
2277 | } | |
2278 | ||
c5aa993b JM |
2279 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2280 | if (b->type == bp_step_resume) | |
2281 | { | |
2282 | delete_breakpoint (b); | |
2283 | continue; | |
2284 | } | |
2285 | ||
611c83ae PA |
2286 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2287 | after an exec. */ | |
2288 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
2289 | { | |
2290 | delete_breakpoint (b); | |
2291 | continue; | |
2292 | } | |
2293 | ||
ce78b96d JB |
2294 | if (b->type == bp_catchpoint) |
2295 | { | |
2296 | /* For now, none of the bp_catchpoint breakpoints need to | |
2297 | do anything at this point. In the future, if some of | |
2298 | the catchpoints need to something, we will need to add | |
2299 | a new method, and call this method from here. */ | |
2300 | continue; | |
2301 | } | |
2302 | ||
c5aa993b JM |
2303 | /* bp_finish is a special case. The only way we ought to be able |
2304 | to see one of these when an exec() has happened, is if the user | |
2305 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2306 | carries them to the call-site of the current callee, by setting | |
2307 | a temporary bp there and resuming. But in this case, the finish | |
2308 | will carry them entirely through the vfork & exec. | |
2309 | ||
2310 | We don't want to allow a bp_finish to remain inserted now. But | |
2311 | we can't safely delete it, 'cause finish_command has a handle to | |
2312 | the bp on a bpstat, and will later want to delete it. There's a | |
2313 | chance (and I've seen it happen) that if we delete the bp_finish | |
2314 | here, that its storage will get reused by the time finish_command | |
2315 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2316 | We really must allow finish_command to delete a bp_finish. | |
2317 | ||
53a5351d JM |
2318 | In the absense of a general solution for the "how do we know |
2319 | it's safe to delete something others may have handles to?" | |
2320 | problem, what we'll do here is just uninsert the bp_finish, and | |
2321 | let finish_command delete it. | |
2322 | ||
2323 | (We know the bp_finish is "doomed" in the sense that it's | |
2324 | momentary, and will be deleted as soon as finish_command sees | |
2325 | the inferior stopped. So it doesn't matter that the bp's | |
2326 | address is probably bogus in the new a.out, unlike e.g., the | |
2327 | solib breakpoints.) */ | |
c5aa993b | 2328 | |
c5aa993b JM |
2329 | if (b->type == bp_finish) |
2330 | { | |
2331 | continue; | |
2332 | } | |
2333 | ||
2334 | /* Without a symbolic address, we have little hope of the | |
2335 | pre-exec() address meaning the same thing in the post-exec() | |
2336 | a.out. */ | |
2337 | if (b->addr_string == NULL) | |
2338 | { | |
2339 | delete_breakpoint (b); | |
2340 | continue; | |
2341 | } | |
c5aa993b | 2342 | } |
1900040c | 2343 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2344 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2345 | create_longjmp_master_breakpoint ("longjmp"); |
2346 | create_longjmp_master_breakpoint ("_longjmp"); | |
2347 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2348 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2349 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
2350 | } |
2351 | ||
2352 | int | |
fba45db2 | 2353 | detach_breakpoints (int pid) |
c906108c | 2354 | { |
876fa593 | 2355 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2356 | int val = 0; |
ce696e05 | 2357 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2358 | struct inferior *inf = current_inferior (); |
c5aa993b | 2359 | |
39f77062 | 2360 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2361 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2362 | |
6c95b8df | 2363 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2364 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2365 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2366 | { |
6c95b8df PA |
2367 | if (b->pspace != inf->pspace) |
2368 | continue; | |
2369 | ||
0bde7532 | 2370 | if (b->inserted) |
6c95b8df | 2371 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2372 | } |
ce696e05 | 2373 | do_cleanups (old_chain); |
3a1bae8e | 2374 | return val; |
c906108c SS |
2375 | } |
2376 | ||
6c95b8df PA |
2377 | /* Remove the breakpoint location B from the current address space. |
2378 | Note that this is used to detach breakpoints from a child fork. | |
2379 | When we get here, the child isn't in the inferior list, and neither | |
2380 | do we have objects to represent its address space --- we should | |
2381 | *not* look at b->pspace->aspace here. */ | |
2382 | ||
c906108c | 2383 | static int |
6c95b8df | 2384 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2385 | { |
2386 | int val; | |
c5aa993b | 2387 | |
0bde7532 | 2388 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2389 | /* Permanent breakpoints cannot be inserted or removed. */ |
2390 | return 0; | |
2391 | ||
74960c60 VP |
2392 | /* The type of none suggests that owner is actually deleted. |
2393 | This should not ever happen. */ | |
2394 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2395 | |
2396 | if (b->loc_type == bp_loc_software_breakpoint | |
2397 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2398 | { |
c02f5703 MS |
2399 | /* "Normal" instruction breakpoint: either the standard |
2400 | trap-instruction bp (bp_breakpoint), or a | |
2401 | bp_hardware_breakpoint. */ | |
2402 | ||
2403 | /* First check to see if we have to handle an overlay. */ | |
2404 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2405 | || b->section == NULL |
2406 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2407 | { |
2408 | /* No overlay handling: just remove the breakpoint. */ | |
2409 | ||
0bde7532 | 2410 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2411 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2412 | else |
a6d9a66e | 2413 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2414 | } |
c906108c SS |
2415 | else |
2416 | { | |
c02f5703 MS |
2417 | /* This breakpoint is in an overlay section. |
2418 | Did we set a breakpoint at the LMA? */ | |
2419 | if (!overlay_events_enabled) | |
2420 | { | |
2421 | /* Yes -- overlay event support is not active, so we | |
2422 | should have set a breakpoint at the LMA. Remove it. | |
2423 | */ | |
c02f5703 MS |
2424 | /* Ignore any failures: if the LMA is in ROM, we will |
2425 | have already warned when we failed to insert it. */ | |
0bde7532 | 2426 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2427 | target_remove_hw_breakpoint (b->gdbarch, |
2428 | &b->overlay_target_info); | |
c02f5703 | 2429 | else |
a6d9a66e UW |
2430 | target_remove_breakpoint (b->gdbarch, |
2431 | &b->overlay_target_info); | |
c02f5703 MS |
2432 | } |
2433 | /* Did we set a breakpoint at the VMA? | |
2434 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2435 | if (b->inserted) |
c906108c | 2436 | { |
c02f5703 MS |
2437 | /* Yes -- remove it. Previously we did not bother to |
2438 | remove the breakpoint if the section had been | |
2439 | unmapped, but let's not rely on that being safe. We | |
2440 | don't know what the overlay manager might do. */ | |
0bde7532 | 2441 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2442 | val = target_remove_hw_breakpoint (b->gdbarch, |
2443 | &b->target_info); | |
aa67235e UW |
2444 | |
2445 | /* However, we should remove *software* breakpoints only | |
2446 | if the section is still mapped, or else we overwrite | |
2447 | wrong code with the saved shadow contents. */ | |
2448 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2449 | val = target_remove_breakpoint (b->gdbarch, |
2450 | &b->target_info); | |
aa67235e UW |
2451 | else |
2452 | val = 0; | |
c906108c | 2453 | } |
c02f5703 MS |
2454 | else |
2455 | { | |
2456 | /* No -- not inserted, so no need to remove. No error. */ | |
2457 | val = 0; | |
2458 | } | |
c906108c | 2459 | } |
879d1e6b UW |
2460 | |
2461 | /* In some cases, we might not be able to remove a breakpoint | |
2462 | in a shared library that has already been removed, but we | |
2463 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2464 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2465 | val = 0; |
2466 | ||
c906108c SS |
2467 | if (val) |
2468 | return val; | |
0bde7532 | 2469 | b->inserted = (is == mark_inserted); |
c906108c | 2470 | } |
a5606eee | 2471 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2472 | { |
0bde7532 | 2473 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2474 | val = target_remove_watchpoint (b->address, b->length, |
2475 | b->watchpoint_type); | |
2e70b7b9 | 2476 | |
c906108c | 2477 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2478 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2479 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2480 | b->owner->number); |
c906108c | 2481 | } |
ce78b96d JB |
2482 | else if (b->owner->type == bp_catchpoint |
2483 | && breakpoint_enabled (b->owner) | |
2484 | && !b->duplicate) | |
2485 | { | |
2486 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2487 | ||
2488 | val = b->owner->ops->remove (b->owner); | |
2489 | if (val) | |
2490 | return val; | |
2491 | b->inserted = (is == mark_inserted); | |
2492 | } | |
c906108c SS |
2493 | |
2494 | return 0; | |
2495 | } | |
2496 | ||
6c95b8df PA |
2497 | static int |
2498 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2499 | { | |
2500 | int ret; | |
2501 | struct cleanup *old_chain; | |
2502 | ||
2503 | if (b->owner->enable_state == bp_permanent) | |
2504 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2505 | return 0; | |
2506 | ||
2507 | /* The type of none suggests that owner is actually deleted. | |
2508 | This should not ever happen. */ | |
2509 | gdb_assert (b->owner->type != bp_none); | |
2510 | ||
2511 | old_chain = save_current_space_and_thread (); | |
2512 | ||
2513 | switch_to_program_space_and_thread (b->pspace); | |
2514 | ||
2515 | ret = remove_breakpoint_1 (b, is); | |
2516 | ||
2517 | do_cleanups (old_chain); | |
2518 | return ret; | |
2519 | } | |
2520 | ||
c906108c SS |
2521 | /* Clear the "inserted" flag in all breakpoints. */ |
2522 | ||
25b22b0a | 2523 | void |
fba45db2 | 2524 | mark_breakpoints_out (void) |
c906108c | 2525 | { |
876fa593 | 2526 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2527 | |
876fa593 | 2528 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2529 | if (bpt->pspace == current_program_space) |
2530 | bpt->inserted = 0; | |
c906108c SS |
2531 | } |
2532 | ||
53a5351d JM |
2533 | /* Clear the "inserted" flag in all breakpoints and delete any |
2534 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2535 | |
2536 | Plus other such housekeeping that has to be done for breakpoints | |
2537 | between runs. | |
2538 | ||
53a5351d JM |
2539 | Note: this function gets called at the end of a run (by |
2540 | generic_mourn_inferior) and when a run begins (by | |
2541 | init_wait_for_inferior). */ | |
c906108c SS |
2542 | |
2543 | ||
2544 | ||
2545 | void | |
fba45db2 | 2546 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2547 | { |
52f0bd74 | 2548 | struct breakpoint *b, *temp; |
876fa593 | 2549 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2550 | int ix; |
6c95b8df | 2551 | struct program_space *pspace = current_program_space; |
c906108c | 2552 | |
50c71eaf PA |
2553 | /* If breakpoint locations are shared across processes, then there's |
2554 | nothing to do. */ | |
2567c7d9 | 2555 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2556 | return; |
2557 | ||
876fa593 | 2558 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2559 | { |
2560 | if (bpt->pspace == pspace | |
2561 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2562 | bpt->inserted = 0; |
6c95b8df | 2563 | } |
075f6582 | 2564 | |
c906108c | 2565 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2566 | { |
6c95b8df PA |
2567 | if (b->loc && b->loc->pspace != pspace) |
2568 | continue; | |
2569 | ||
c5aa993b JM |
2570 | switch (b->type) |
2571 | { | |
2572 | case bp_call_dummy: | |
c906108c | 2573 | |
c5aa993b | 2574 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2575 | cause problems when the inferior is rerun, so we better get |
2576 | rid of it. */ | |
2577 | ||
2578 | case bp_watchpoint_scope: | |
2579 | ||
2580 | /* Also get rid of scope breakpoints. */ | |
2581 | ||
2582 | case bp_shlib_event: | |
2583 | ||
2584 | /* Also remove solib event breakpoints. Their addresses may | |
2585 | have changed since the last time we ran the program. | |
2586 | Actually we may now be debugging against different target; | |
2587 | and so the solib backend that installed this breakpoint may | |
2588 | not be used in by the target. E.g., | |
2589 | ||
2590 | (gdb) file prog-linux | |
2591 | (gdb) run # native linux target | |
2592 | ... | |
2593 | (gdb) kill | |
2594 | (gdb) file prog-win.exe | |
2595 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2596 | */ | |
c906108c | 2597 | |
c5aa993b JM |
2598 | delete_breakpoint (b); |
2599 | break; | |
c906108c | 2600 | |
c5aa993b JM |
2601 | case bp_watchpoint: |
2602 | case bp_hardware_watchpoint: | |
2603 | case bp_read_watchpoint: | |
2604 | case bp_access_watchpoint: | |
c906108c | 2605 | |
c5aa993b JM |
2606 | /* Likewise for watchpoints on local expressions. */ |
2607 | if (b->exp_valid_block != NULL) | |
2608 | delete_breakpoint (b); | |
967af18d | 2609 | else if (context == inf_starting) |
c860120c PM |
2610 | { |
2611 | /* Reset val field to force reread of starting value | |
2612 | in insert_breakpoints. */ | |
2613 | if (b->val) | |
2614 | value_free (b->val); | |
2615 | b->val = NULL; | |
fa4727a6 | 2616 | b->val_valid = 0; |
c860120c | 2617 | } |
c5aa993b JM |
2618 | break; |
2619 | default: | |
c5aa993b JM |
2620 | break; |
2621 | } | |
2622 | } | |
1c5cfe86 PA |
2623 | |
2624 | /* Get rid of the moribund locations. */ | |
2625 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2626 | free_bp_location (bpt); | |
2627 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2628 | } |
2629 | ||
6c95b8df PA |
2630 | /* These functions concern about actual breakpoints inserted in the |
2631 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2632 | we need to hop over the bkpt --- so we check for address space | |
2633 | match, not program space. */ | |
2634 | ||
c2c6d25f JM |
2635 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2636 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2637 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2638 | permanent breakpoint. | |
2639 | - When continuing from a location with an ordinary breakpoint, we | |
2640 | actually single step once before calling insert_breakpoints. | |
2641 | - When continuing from a localion with a permanent breakpoint, we | |
2642 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2643 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2644 | |
c2c6d25f | 2645 | enum breakpoint_here |
6c95b8df | 2646 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2647 | { |
876fa593 | 2648 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2649 | int any_breakpoint_here = 0; |
c906108c | 2650 | |
876fa593 | 2651 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2652 | { |
2653 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2654 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2655 | continue; | |
2656 | ||
468d015d | 2657 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2658 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2659 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2660 | aspace, pc)) | |
075f6582 DJ |
2661 | { |
2662 | if (overlay_debugging | |
2663 | && section_is_overlay (bpt->section) | |
2664 | && !section_is_mapped (bpt->section)) | |
2665 | continue; /* unmapped overlay -- can't be a match */ | |
2666 | else if (bpt->owner->enable_state == bp_permanent) | |
2667 | return permanent_breakpoint_here; | |
2668 | else | |
2669 | any_breakpoint_here = 1; | |
2670 | } | |
2671 | } | |
c906108c | 2672 | |
c2c6d25f | 2673 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2674 | } |
2675 | ||
1c5cfe86 PA |
2676 | /* Return true if there's a moribund breakpoint at PC. */ |
2677 | ||
2678 | int | |
6c95b8df | 2679 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2680 | { |
2681 | struct bp_location *loc; | |
2682 | int ix; | |
2683 | ||
2684 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2685 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2686 | aspace, pc)) | |
1c5cfe86 PA |
2687 | return 1; |
2688 | ||
2689 | return 0; | |
2690 | } | |
c2c6d25f | 2691 | |
c36b740a | 2692 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2693 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2694 | This does not check for single-step breakpoints, which are |
2695 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2696 | |
2697 | int | |
6c95b8df | 2698 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2699 | { |
876fa593 | 2700 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2701 | |
876fa593 | 2702 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2703 | { |
075f6582 DJ |
2704 | if (bpt->loc_type != bp_loc_software_breakpoint |
2705 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2706 | continue; | |
2707 | ||
2708 | if (bpt->inserted | |
6c95b8df PA |
2709 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2710 | aspace, pc)) | |
075f6582 DJ |
2711 | { |
2712 | if (overlay_debugging | |
2713 | && section_is_overlay (bpt->section) | |
2714 | && !section_is_mapped (bpt->section)) | |
2715 | continue; /* unmapped overlay -- can't be a match */ | |
2716 | else | |
2717 | return 1; | |
2718 | } | |
c5aa993b | 2719 | } |
c36b740a VP |
2720 | return 0; |
2721 | } | |
2722 | ||
2723 | /* Returns non-zero iff there's either regular breakpoint | |
2724 | or a single step breakpoint inserted at PC. */ | |
2725 | ||
2726 | int | |
6c95b8df | 2727 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2728 | { |
6c95b8df | 2729 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2730 | return 1; |
c906108c | 2731 | |
6c95b8df | 2732 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2733 | return 1; |
2734 | ||
c906108c SS |
2735 | return 0; |
2736 | } | |
2737 | ||
4fa8626c DJ |
2738 | /* This function returns non-zero iff there is a software breakpoint |
2739 | inserted at PC. */ | |
2740 | ||
2741 | int | |
6c95b8df | 2742 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2743 | { |
876fa593 | 2744 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c | 2745 | |
876fa593 | 2746 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2747 | { |
2748 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2749 | continue; | |
2750 | ||
0d381245 | 2751 | if (bpt->inserted |
6c95b8df PA |
2752 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2753 | aspace, pc)) | |
4fa8626c DJ |
2754 | { |
2755 | if (overlay_debugging | |
2756 | && section_is_overlay (bpt->section) | |
2757 | && !section_is_mapped (bpt->section)) | |
2758 | continue; /* unmapped overlay -- can't be a match */ | |
2759 | else | |
2760 | return 1; | |
2761 | } | |
2762 | } | |
2763 | ||
1aafd4da | 2764 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2765 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2766 | return 1; |
2767 | ||
4fa8626c DJ |
2768 | return 0; |
2769 | } | |
2770 | ||
9093389c PA |
2771 | int |
2772 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2773 | CORE_ADDR addr, ULONGEST len) | |
2774 | { | |
2775 | struct breakpoint *bpt; | |
2776 | ||
2777 | ALL_BREAKPOINTS (bpt) | |
2778 | { | |
2779 | struct bp_location *loc; | |
2780 | ||
2781 | if (bpt->type != bp_hardware_watchpoint | |
2782 | && bpt->type != bp_access_watchpoint) | |
2783 | continue; | |
2784 | ||
2785 | if (!breakpoint_enabled (bpt)) | |
2786 | continue; | |
2787 | ||
2788 | for (loc = bpt->loc; loc; loc = loc->next) | |
2789 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2790 | { | |
2791 | CORE_ADDR l, h; | |
2792 | ||
2793 | /* Check for intersection. */ | |
2794 | l = max (loc->address, addr); | |
2795 | h = min (loc->address + loc->length, addr + len); | |
2796 | if (l < h) | |
2797 | return 1; | |
2798 | } | |
2799 | } | |
2800 | return 0; | |
2801 | } | |
2802 | ||
075f6582 DJ |
2803 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2804 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2805 | |
2806 | int | |
6c95b8df PA |
2807 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2808 | ptid_t ptid) | |
c906108c | 2809 | { |
876fa593 | 2810 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2811 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2812 | int thread = -1; |
4a306c9a | 2813 | int task = 0; |
a6f1cd96 | 2814 | |
876fa593 | 2815 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2816 | { |
075f6582 DJ |
2817 | if (bpt->loc_type != bp_loc_software_breakpoint |
2818 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2819 | continue; | |
2820 | ||
a6f1cd96 JB |
2821 | if (!breakpoint_enabled (bpt->owner) |
2822 | && bpt->owner->enable_state != bp_permanent) | |
2823 | continue; | |
2824 | ||
6c95b8df PA |
2825 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2826 | aspace, pc)) | |
a6f1cd96 JB |
2827 | continue; |
2828 | ||
2829 | if (bpt->owner->thread != -1) | |
075f6582 | 2830 | { |
a6f1cd96 JB |
2831 | /* This is a thread-specific breakpoint. Check that ptid |
2832 | matches that thread. If thread hasn't been computed yet, | |
2833 | it is now time to do so. */ | |
2834 | if (thread == -1) | |
2835 | thread = pid_to_thread_id (ptid); | |
2836 | if (bpt->owner->thread != thread) | |
2837 | continue; | |
075f6582 | 2838 | } |
a6f1cd96 | 2839 | |
4a306c9a JB |
2840 | if (bpt->owner->task != 0) |
2841 | { | |
2842 | /* This is a task-specific breakpoint. Check that ptid | |
2843 | matches that task. If task hasn't been computed yet, | |
2844 | it is now time to do so. */ | |
2845 | if (task == 0) | |
2846 | task = ada_get_task_number (ptid); | |
2847 | if (bpt->owner->task != task) | |
2848 | continue; | |
2849 | } | |
2850 | ||
a6f1cd96 JB |
2851 | if (overlay_debugging |
2852 | && section_is_overlay (bpt->section) | |
2853 | && !section_is_mapped (bpt->section)) | |
2854 | continue; /* unmapped overlay -- can't be a match */ | |
2855 | ||
2856 | return 1; | |
c5aa993b | 2857 | } |
c906108c SS |
2858 | |
2859 | return 0; | |
2860 | } | |
c906108c | 2861 | \f |
c5aa993b | 2862 | |
c906108c SS |
2863 | /* bpstat stuff. External routines' interfaces are documented |
2864 | in breakpoint.h. */ | |
2865 | ||
2866 | int | |
fba45db2 | 2867 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2868 | { |
533be4dd | 2869 | return (ep->type == bp_catchpoint); |
c906108c SS |
2870 | } |
2871 | ||
198757a8 VP |
2872 | void |
2873 | bpstat_free (bpstat bs) | |
2874 | { | |
2875 | if (bs->old_val != NULL) | |
2876 | value_free (bs->old_val); | |
9add0f1b | 2877 | decref_counted_command_line (&bs->commands); |
198757a8 VP |
2878 | xfree (bs); |
2879 | } | |
2880 | ||
c906108c SS |
2881 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2882 | Also free any storage that is part of a bpstat. */ | |
2883 | ||
2884 | void | |
fba45db2 | 2885 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2886 | { |
2887 | bpstat p; | |
2888 | bpstat q; | |
2889 | ||
2890 | if (bsp == 0) | |
2891 | return; | |
2892 | p = *bsp; | |
2893 | while (p != NULL) | |
2894 | { | |
2895 | q = p->next; | |
198757a8 | 2896 | bpstat_free (p); |
c906108c SS |
2897 | p = q; |
2898 | } | |
2899 | *bsp = NULL; | |
2900 | } | |
2901 | ||
2902 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2903 | is part of the bpstat is copied as well. */ | |
2904 | ||
2905 | bpstat | |
fba45db2 | 2906 | bpstat_copy (bpstat bs) |
c906108c SS |
2907 | { |
2908 | bpstat p = NULL; | |
2909 | bpstat tmp; | |
2910 | bpstat retval = NULL; | |
2911 | ||
2912 | if (bs == NULL) | |
2913 | return bs; | |
2914 | ||
2915 | for (; bs != NULL; bs = bs->next) | |
2916 | { | |
2917 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2918 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2919 | incref_counted_command_line (tmp->commands); |
31cc81e9 | 2920 | if (bs->old_val != NULL) |
3c3185ac JK |
2921 | { |
2922 | tmp->old_val = value_copy (bs->old_val); | |
2923 | release_value (tmp->old_val); | |
2924 | } | |
31cc81e9 | 2925 | |
c906108c SS |
2926 | if (p == NULL) |
2927 | /* This is the first thing in the chain. */ | |
2928 | retval = tmp; | |
2929 | else | |
2930 | p->next = tmp; | |
2931 | p = tmp; | |
2932 | } | |
2933 | p->next = NULL; | |
2934 | return retval; | |
2935 | } | |
2936 | ||
2937 | /* Find the bpstat associated with this breakpoint */ | |
2938 | ||
2939 | bpstat | |
fba45db2 | 2940 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2941 | { |
c5aa993b JM |
2942 | if (bsp == NULL) |
2943 | return NULL; | |
c906108c | 2944 | |
c5aa993b JM |
2945 | for (; bsp != NULL; bsp = bsp->next) |
2946 | { | |
4f8d1dc6 | 2947 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2948 | return bsp; |
2949 | } | |
c906108c SS |
2950 | return NULL; |
2951 | } | |
2952 | ||
8671a17b | 2953 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2954 | at. *BSP upon return is a bpstat which points to the remaining |
2955 | breakpoints stopped at (but which is not guaranteed to be good for | |
2956 | anything but further calls to bpstat_num). | |
8671a17b PA |
2957 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2958 | Return -1 if stopped at a breakpoint that has been deleted since | |
2959 | we set it. | |
2960 | Return 1 otherwise. */ | |
c906108c SS |
2961 | |
2962 | int | |
8671a17b | 2963 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2964 | { |
2965 | struct breakpoint *b; | |
2966 | ||
2967 | if ((*bsp) == NULL) | |
2968 | return 0; /* No more breakpoint values */ | |
8671a17b | 2969 | |
4f8d1dc6 VP |
2970 | /* We assume we'll never have several bpstats that |
2971 | correspond to a single breakpoint -- otherwise, | |
2972 | this function might return the same number more | |
2973 | than once and this will look ugly. */ | |
2974 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2975 | *bsp = (*bsp)->next; |
2976 | if (b == NULL) | |
2977 | return -1; /* breakpoint that's been deleted since */ | |
2978 | ||
2979 | *num = b->number; /* We have its number */ | |
2980 | return 1; | |
c906108c SS |
2981 | } |
2982 | ||
2983 | /* Modify BS so that the actions will not be performed. */ | |
2984 | ||
2985 | void | |
fba45db2 | 2986 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2987 | { |
2988 | for (; bs != NULL; bs = bs->next) | |
2989 | { | |
9add0f1b | 2990 | decref_counted_command_line (&bs->commands); |
dde2d684 | 2991 | bs->commands_left = NULL; |
c906108c SS |
2992 | if (bs->old_val != NULL) |
2993 | { | |
2994 | value_free (bs->old_val); | |
2995 | bs->old_val = NULL; | |
2996 | } | |
2997 | } | |
2998 | } | |
2999 | ||
f3b1572e PA |
3000 | /* Called when a command is about to proceed the inferior. */ |
3001 | ||
3002 | static void | |
3003 | breakpoint_about_to_proceed (void) | |
3004 | { | |
3005 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3006 | { | |
3007 | struct thread_info *tp = inferior_thread (); | |
3008 | ||
3009 | /* Allow inferior function calls in breakpoint commands to not | |
3010 | interrupt the command list. When the call finishes | |
3011 | successfully, the inferior will be standing at the same | |
3012 | breakpoint as if nothing happened. */ | |
3013 | if (tp->in_infcall) | |
3014 | return; | |
3015 | } | |
3016 | ||
3017 | breakpoint_proceeded = 1; | |
3018 | } | |
3019 | ||
c906108c | 3020 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 3021 | static void |
4efb68b1 | 3022 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3023 | { |
3024 | executing_breakpoint_commands = 0; | |
3025 | } | |
3026 | ||
3027 | /* Execute all the commands associated with all the breakpoints at this | |
3028 | location. Any of these commands could cause the process to proceed | |
3029 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 3030 | the global "breakpoint_proceeded" after each command. |
c906108c | 3031 | |
347bddb7 PA |
3032 | Returns true if a breakpoint command resumed the inferior. In that |
3033 | case, it is the caller's responsibility to recall it again with the | |
3034 | bpstat of the current thread. */ | |
3035 | ||
3036 | static int | |
3037 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3038 | { |
3039 | bpstat bs; | |
3040 | struct cleanup *old_chain; | |
347bddb7 | 3041 | int again = 0; |
c906108c SS |
3042 | |
3043 | /* Avoid endless recursion if a `source' command is contained | |
3044 | in bs->commands. */ | |
3045 | if (executing_breakpoint_commands) | |
347bddb7 | 3046 | return 0; |
c906108c SS |
3047 | |
3048 | executing_breakpoint_commands = 1; | |
3049 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3050 | ||
c906108c SS |
3051 | /* This pointer will iterate over the list of bpstat's. */ |
3052 | bs = *bsp; | |
3053 | ||
3054 | breakpoint_proceeded = 0; | |
3055 | for (; bs != NULL; bs = bs->next) | |
3056 | { | |
9add0f1b | 3057 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3058 | struct command_line *cmd; |
3059 | struct cleanup *this_cmd_tree_chain; | |
3060 | ||
3061 | /* Take ownership of the BSP's command tree, if it has one. | |
3062 | ||
3063 | The command tree could legitimately contain commands like | |
3064 | 'step' and 'next', which call clear_proceed_status, which | |
3065 | frees stop_bpstat's command tree. To make sure this doesn't | |
3066 | free the tree we're executing out from under us, we need to | |
3067 | take ownership of the tree ourselves. Since a given bpstat's | |
3068 | commands are only executed once, we don't need to copy it; we | |
3069 | can clear the pointer in the bpstat, and make sure we free | |
3070 | the tree when we're done. */ | |
9add0f1b TT |
3071 | ccmd = bs->commands; |
3072 | bs->commands = NULL; | |
3073 | this_cmd_tree_chain | |
3074 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3075 | cmd = bs->commands_left; | |
3076 | bs->commands_left = NULL; | |
6c50ab1c | 3077 | |
c906108c SS |
3078 | while (cmd != NULL) |
3079 | { | |
3080 | execute_control_command (cmd); | |
3081 | ||
3082 | if (breakpoint_proceeded) | |
3083 | break; | |
3084 | else | |
3085 | cmd = cmd->next; | |
3086 | } | |
6c50ab1c JB |
3087 | |
3088 | /* We can free this command tree now. */ | |
3089 | do_cleanups (this_cmd_tree_chain); | |
3090 | ||
c906108c | 3091 | if (breakpoint_proceeded) |
32c1e744 VP |
3092 | { |
3093 | if (target_can_async_p ()) | |
347bddb7 PA |
3094 | /* If we are in async mode, then the target might be still |
3095 | running, not stopped at any breakpoint, so nothing for | |
3096 | us to do here -- just return to the event loop. */ | |
3097 | ; | |
32c1e744 VP |
3098 | else |
3099 | /* In sync mode, when execute_control_command returns | |
3100 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3101 | Breakpoint commands for that stop were not run, since |
3102 | execute_command does not run breakpoint commands -- | |
3103 | only command_line_handler does, but that one is not | |
3104 | involved in execution of breakpoint commands. So, we | |
3105 | can now execute breakpoint commands. It should be | |
3106 | noted that making execute_command do bpstat actions is | |
3107 | not an option -- in this case we'll have recursive | |
3108 | invocation of bpstat for each breakpoint with a | |
3109 | command, and can easily blow up GDB stack. Instead, we | |
3110 | return true, which will trigger the caller to recall us | |
3111 | with the new stop_bpstat. */ | |
3112 | again = 1; | |
3113 | break; | |
32c1e744 | 3114 | } |
c906108c | 3115 | } |
c2b8ed2c | 3116 | do_cleanups (old_chain); |
347bddb7 PA |
3117 | return again; |
3118 | } | |
3119 | ||
3120 | void | |
3121 | bpstat_do_actions (void) | |
3122 | { | |
3123 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3124 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3125 | && target_has_execution | |
3126 | && !is_exited (inferior_ptid) | |
3127 | && !is_executing (inferior_ptid)) | |
3128 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3129 | and only return when it is stopped at the next breakpoint, we | |
3130 | keep doing breakpoint actions until it returns false to | |
3131 | indicate the inferior was not resumed. */ | |
3132 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
3133 | break; | |
c906108c SS |
3134 | } |
3135 | ||
fa4727a6 DJ |
3136 | /* Print out the (old or new) value associated with a watchpoint. */ |
3137 | ||
3138 | static void | |
3139 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3140 | { | |
3141 | if (val == NULL) | |
3142 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3143 | else | |
79a45b7d TT |
3144 | { |
3145 | struct value_print_options opts; | |
3146 | get_user_print_options (&opts); | |
3147 | value_print (val, stream, &opts); | |
3148 | } | |
fa4727a6 DJ |
3149 | } |
3150 | ||
e514a9d6 | 3151 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3152 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3153 | by having it set different print_it values. |
3154 | ||
3155 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3156 | through the bpstat list of things causing this stop, calling the | |
3157 | print_bp_stop_message function on each one. The behavior of the | |
3158 | print_bp_stop_message function depends on the print_it field of | |
3159 | bpstat. If such field so indicates, call this function here. | |
3160 | ||
3161 | Return values from this routine (ultimately used by bpstat_print() | |
3162 | and normal_stop() to decide what to do): | |
3163 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3164 | don't print anything else. | |
3165 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3166 | that something to be followed by a location. | |
3167 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3168 | that something to be followed by a location. | |
3169 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3170 | analysis. */ | |
c906108c | 3171 | |
917317f4 | 3172 | static enum print_stop_action |
fba45db2 | 3173 | print_it_typical (bpstat bs) |
c906108c | 3174 | { |
f7545552 | 3175 | struct cleanup *old_chain; |
4f8d1dc6 | 3176 | struct breakpoint *b; |
89f9893c | 3177 | const struct bp_location *bl; |
8b93c638 | 3178 | struct ui_stream *stb; |
f7545552 TT |
3179 | int bp_temp = 0; |
3180 | enum print_stop_action result; | |
3181 | ||
c906108c SS |
3182 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3183 | which has since been deleted. */ | |
e514a9d6 | 3184 | if (bs->breakpoint_at == NULL) |
917317f4 | 3185 | return PRINT_UNKNOWN; |
0d381245 VP |
3186 | bl = bs->breakpoint_at; |
3187 | b = bl->owner; | |
c906108c | 3188 | |
f7545552 TT |
3189 | stb = ui_out_stream_new (uiout); |
3190 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3191 | ||
4f8d1dc6 | 3192 | switch (b->type) |
c906108c | 3193 | { |
e514a9d6 JM |
3194 | case bp_breakpoint: |
3195 | case bp_hardware_breakpoint: | |
2cec12e5 | 3196 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
3197 | if (bl->address != bl->requested_address) |
3198 | breakpoint_adjustment_warning (bl->requested_address, | |
3199 | bl->address, | |
4f8d1dc6 VP |
3200 | b->number, 1); |
3201 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3202 | if (bp_temp) |
3203 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3204 | else | |
3205 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3206 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3207 | { |
3208 | ui_out_field_string (uiout, "reason", | |
3209 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3210 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3211 | } | |
4f8d1dc6 | 3212 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3213 | ui_out_text (uiout, ", "); |
f7545552 | 3214 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3215 | break; |
3216 | ||
3217 | case bp_shlib_event: | |
917317f4 JM |
3218 | /* Did we stop because the user set the stop_on_solib_events |
3219 | variable? (If so, we report this as a generic, "Stopped due | |
3220 | to shlib event" message.) */ | |
a3f17187 | 3221 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3222 | result = PRINT_NOTHING; |
e514a9d6 JM |
3223 | break; |
3224 | ||
c4093a6a JM |
3225 | case bp_thread_event: |
3226 | /* Not sure how we will get here. | |
3227 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 3228 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3229 | result = PRINT_NOTHING; |
c4093a6a JM |
3230 | break; |
3231 | ||
1900040c MS |
3232 | case bp_overlay_event: |
3233 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 3234 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3235 | result = PRINT_NOTHING; |
1900040c MS |
3236 | break; |
3237 | ||
0fd8e87f UW |
3238 | case bp_longjmp_master: |
3239 | /* These should never be enabled. */ | |
3240 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3241 | result = PRINT_NOTHING; | |
3242 | break; | |
3243 | ||
aa7d318d TT |
3244 | case bp_std_terminate_master: |
3245 | /* These should never be enabled. */ | |
3246 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3247 | result = PRINT_NOTHING; | |
3248 | break; | |
3249 | ||
e514a9d6 JM |
3250 | case bp_watchpoint: |
3251 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3252 | annotate_watchpoint (b->number); |
3253 | if (ui_out_is_mi_like_p (uiout)) | |
3254 | ui_out_field_string | |
3255 | (uiout, "reason", | |
3256 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3257 | mention (b); | |
f7545552 | 3258 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3259 | ui_out_text (uiout, "\nOld value = "); |
3260 | watchpoint_value_print (bs->old_val, stb->stream); | |
3261 | ui_out_field_stream (uiout, "old", stb); | |
3262 | ui_out_text (uiout, "\nNew value = "); | |
3263 | watchpoint_value_print (b->val, stb->stream); | |
3264 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3265 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3266 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3267 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3268 | break; |
3269 | ||
3270 | case bp_read_watchpoint: | |
9dc5e2a9 | 3271 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3272 | ui_out_field_string |
3273 | (uiout, "reason", | |
3274 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3275 | mention (b); |
f7545552 | 3276 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3277 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3278 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3279 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3280 | ui_out_text (uiout, "\n"); |
f7545552 | 3281 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3282 | break; |
3283 | ||
3284 | case bp_access_watchpoint: | |
fa4727a6 | 3285 | if (bs->old_val != NULL) |
8b93c638 | 3286 | { |
4f8d1dc6 | 3287 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3288 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3289 | ui_out_field_string |
3290 | (uiout, "reason", | |
3291 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3292 | mention (b); |
f7545552 | 3293 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3294 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3295 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3296 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3297 | ui_out_text (uiout, "\nNew value = "); |
3298 | } | |
3299 | else | |
3300 | { | |
4f8d1dc6 | 3301 | mention (b); |
9dc5e2a9 | 3302 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3303 | ui_out_field_string |
3304 | (uiout, "reason", | |
3305 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3306 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3307 | ui_out_text (uiout, "\nValue = "); |
3308 | } | |
fa4727a6 | 3309 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3310 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3311 | ui_out_text (uiout, "\n"); |
f7545552 | 3312 | result = PRINT_UNKNOWN; |
e514a9d6 | 3313 | break; |
4ce44c66 | 3314 | |
e514a9d6 JM |
3315 | /* Fall through, we don't deal with these types of breakpoints |
3316 | here. */ | |
3317 | ||
11cf8741 | 3318 | case bp_finish: |
9dc5e2a9 | 3319 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3320 | ui_out_field_string |
3321 | (uiout, "reason", | |
3322 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3323 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3324 | break; |
3325 | ||
e514a9d6 | 3326 | case bp_until: |
9dc5e2a9 | 3327 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3328 | ui_out_field_string |
3329 | (uiout, "reason", | |
3330 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3331 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3332 | break; |
3333 | ||
c2d11a7d | 3334 | case bp_none: |
e514a9d6 JM |
3335 | case bp_longjmp: |
3336 | case bp_longjmp_resume: | |
3337 | case bp_step_resume: | |
e514a9d6 JM |
3338 | case bp_watchpoint_scope: |
3339 | case bp_call_dummy: | |
aa7d318d | 3340 | case bp_std_terminate: |
1042e4c0 | 3341 | case bp_tracepoint: |
7a697b8d | 3342 | case bp_fast_tracepoint: |
4efc6507 | 3343 | case bp_jit_event: |
e514a9d6 | 3344 | default: |
f7545552 TT |
3345 | result = PRINT_UNKNOWN; |
3346 | break; | |
e514a9d6 | 3347 | } |
f7545552 TT |
3348 | |
3349 | do_cleanups (old_chain); | |
3350 | return result; | |
e514a9d6 JM |
3351 | } |
3352 | ||
3353 | /* Generic routine for printing messages indicating why we | |
3354 | stopped. The behavior of this function depends on the value | |
3355 | 'print_it' in the bpstat structure. Under some circumstances we | |
3356 | may decide not to print anything here and delegate the task to | |
3357 | normal_stop(). */ | |
3358 | ||
3359 | static enum print_stop_action | |
3360 | print_bp_stop_message (bpstat bs) | |
3361 | { | |
3362 | switch (bs->print_it) | |
3363 | { | |
3364 | case print_it_noop: | |
3365 | /* Nothing should be printed for this bpstat entry. */ | |
3366 | return PRINT_UNKNOWN; | |
3367 | break; | |
3368 | ||
3369 | case print_it_done: | |
3370 | /* We still want to print the frame, but we already printed the | |
3371 | relevant messages. */ | |
3372 | return PRINT_SRC_AND_LOC; | |
3373 | break; | |
3374 | ||
3375 | case print_it_normal: | |
4f8d1dc6 | 3376 | { |
89f9893c | 3377 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3378 | struct breakpoint *b = bl ? bl->owner : NULL; |
3379 | ||
3380 | /* Normal case. Call the breakpoint's print_it method, or | |
3381 | print_it_typical. */ | |
3382 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3383 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3384 | return b->ops->print_it (b); | |
3385 | else | |
3386 | return print_it_typical (bs); | |
3387 | } | |
3388 | break; | |
3086aeae | 3389 | |
e514a9d6 | 3390 | default: |
8e65ff28 | 3391 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3392 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3393 | break; |
c906108c | 3394 | } |
c906108c SS |
3395 | } |
3396 | ||
e514a9d6 JM |
3397 | /* Print a message indicating what happened. This is called from |
3398 | normal_stop(). The input to this routine is the head of the bpstat | |
3399 | list - a list of the eventpoints that caused this stop. This | |
3400 | routine calls the generic print routine for printing a message | |
3401 | about reasons for stopping. This will print (for example) the | |
3402 | "Breakpoint n," part of the output. The return value of this | |
3403 | routine is one of: | |
c906108c | 3404 | |
917317f4 JM |
3405 | PRINT_UNKNOWN: Means we printed nothing |
3406 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3407 | code to print the location. An example is |
3408 | "Breakpoint 1, " which should be followed by | |
3409 | the location. | |
917317f4 | 3410 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3411 | to also print the location part of the message. |
3412 | An example is the catch/throw messages, which | |
917317f4 JM |
3413 | don't require a location appended to the end. |
3414 | PRINT_NOTHING: We have done some printing and we don't need any | |
3415 | further info to be printed.*/ | |
c906108c | 3416 | |
917317f4 | 3417 | enum print_stop_action |
fba45db2 | 3418 | bpstat_print (bpstat bs) |
c906108c SS |
3419 | { |
3420 | int val; | |
c5aa993b | 3421 | |
c906108c | 3422 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3423 | (Currently all watchpoints go on the bpstat whether hit or not. |
3424 | That probably could (should) be changed, provided care is taken | |
c906108c | 3425 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3426 | for (; bs; bs = bs->next) |
3427 | { | |
3428 | val = print_bp_stop_message (bs); | |
3429 | if (val == PRINT_SRC_ONLY | |
3430 | || val == PRINT_SRC_AND_LOC | |
3431 | || val == PRINT_NOTHING) | |
3432 | return val; | |
3433 | } | |
c906108c | 3434 | |
e514a9d6 JM |
3435 | /* We reached the end of the chain, or we got a null BS to start |
3436 | with and nothing was printed. */ | |
917317f4 | 3437 | return PRINT_UNKNOWN; |
c906108c SS |
3438 | } |
3439 | ||
3440 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3441 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3442 | The argument is a "struct expression *" that has been cast to char * to | |
3443 | make it pass through catch_errors. */ | |
3444 | ||
3445 | static int | |
4efb68b1 | 3446 | breakpoint_cond_eval (void *exp) |
c906108c | 3447 | { |
278cd55f | 3448 | struct value *mark = value_mark (); |
c5aa993b | 3449 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
3450 | value_free_to_mark (mark); |
3451 | return i; | |
3452 | } | |
3453 | ||
3454 | /* Allocate a new bpstat and chain it to the current one. */ | |
3455 | ||
3456 | static bpstat | |
89f9893c | 3457 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3458 | { |
3459 | bpstat bs; | |
3460 | ||
3461 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3462 | cbs->next = bs; | |
4f8d1dc6 | 3463 | bs->breakpoint_at = bl; |
c906108c SS |
3464 | /* If the condition is false, etc., don't do the commands. */ |
3465 | bs->commands = NULL; | |
9add0f1b | 3466 | bs->commands_left = NULL; |
c906108c SS |
3467 | bs->old_val = NULL; |
3468 | bs->print_it = print_it_normal; | |
3469 | return bs; | |
3470 | } | |
3471 | \f | |
d983da9c DJ |
3472 | /* The target has stopped with waitstatus WS. Check if any hardware |
3473 | watchpoints have triggered, according to the target. */ | |
3474 | ||
3475 | int | |
3476 | watchpoints_triggered (struct target_waitstatus *ws) | |
3477 | { | |
d92524f1 | 3478 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3479 | CORE_ADDR addr; |
3480 | struct breakpoint *b; | |
3481 | ||
3482 | if (!stopped_by_watchpoint) | |
3483 | { | |
3484 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3485 | as not triggered. */ | |
3486 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3487 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3488 | b->watchpoint_triggered = watch_triggered_no; |
3489 | ||
3490 | return 0; | |
3491 | } | |
3492 | ||
3493 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3494 | { | |
3495 | /* We were stopped by a watchpoint, but we don't know where. | |
3496 | Mark all watchpoints as unknown. */ | |
3497 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3498 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3499 | b->watchpoint_triggered = watch_triggered_unknown; |
3500 | ||
3501 | return stopped_by_watchpoint; | |
3502 | } | |
3503 | ||
3504 | /* The target could report the data address. Mark watchpoints | |
3505 | affected by this data address as triggered, and all others as not | |
3506 | triggered. */ | |
3507 | ||
3508 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3509 | if (is_hardware_watchpoint (b)) |
d983da9c | 3510 | { |
a5606eee | 3511 | struct bp_location *loc; |
d983da9c DJ |
3512 | |
3513 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3514 | for (loc = b->loc; loc; loc = loc->next) |
3515 | /* Exact match not required. Within range is | |
3516 | sufficient. */ | |
5009afc5 AS |
3517 | if (target_watchpoint_addr_within_range (¤t_target, |
3518 | addr, loc->address, | |
3519 | loc->length)) | |
a5606eee VP |
3520 | { |
3521 | b->watchpoint_triggered = watch_triggered_yes; | |
3522 | break; | |
3523 | } | |
d983da9c DJ |
3524 | } |
3525 | ||
3526 | return 1; | |
3527 | } | |
3528 | ||
c906108c SS |
3529 | /* Possible return values for watchpoint_check (this can't be an enum |
3530 | because of check_errors). */ | |
3531 | /* The watchpoint has been deleted. */ | |
3532 | #define WP_DELETED 1 | |
3533 | /* The value has changed. */ | |
3534 | #define WP_VALUE_CHANGED 2 | |
3535 | /* The value has not changed. */ | |
3536 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3537 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3538 | #define WP_IGNORE 4 | |
c906108c SS |
3539 | |
3540 | #define BP_TEMPFLAG 1 | |
3541 | #define BP_HARDWAREFLAG 2 | |
3542 | ||
553e4c11 JB |
3543 | /* Evaluate watchpoint condition expression and check if its value changed. |
3544 | ||
3545 | P should be a pointer to struct bpstat, but is defined as a void * | |
3546 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3547 | |
3548 | static int | |
4efb68b1 | 3549 | watchpoint_check (void *p) |
c906108c SS |
3550 | { |
3551 | bpstat bs = (bpstat) p; | |
3552 | struct breakpoint *b; | |
3553 | struct frame_info *fr; | |
3554 | int within_current_scope; | |
3555 | ||
4f8d1dc6 | 3556 | b = bs->breakpoint_at->owner; |
c906108c | 3557 | |
f6bc2008 PA |
3558 | /* If this is a local watchpoint, we only want to check if the |
3559 | watchpoint frame is in scope if the current thread is the thread | |
3560 | that was used to create the watchpoint. */ | |
3561 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3562 | return WP_IGNORE; |
f6bc2008 | 3563 | |
c906108c SS |
3564 | if (b->exp_valid_block == NULL) |
3565 | within_current_scope = 1; | |
3566 | else | |
3567 | { | |
edb3359d DJ |
3568 | struct frame_info *frame = get_current_frame (); |
3569 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3570 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3571 | ||
a0f49112 JK |
3572 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3573 | in the function but the stack frame has already been invalidated. | |
3574 | Since we can't rely on the values of local variables after the | |
3575 | stack has been destroyed, we are treating the watchpoint in that | |
3576 | state as `not changed' without further checking. Don't mark | |
3577 | watchpoints as changed if the current frame is in an epilogue - | |
3578 | even if they are in some other frame, our view of the stack | |
3579 | is likely to be wrong and frame_find_by_id could error out. */ | |
3580 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
60e1c644 | 3581 | return WP_IGNORE; |
a0f49112 | 3582 | |
101dcfbe | 3583 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3584 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3585 | |
3586 | /* If we've gotten confused in the unwinder, we might have | |
3587 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3588 | if (within_current_scope) |
3589 | { | |
3590 | struct symbol *function; | |
3591 | ||
3592 | function = get_frame_function (fr); | |
3593 | if (function == NULL | |
3594 | || !contained_in (b->exp_valid_block, | |
3595 | SYMBOL_BLOCK_VALUE (function))) | |
3596 | within_current_scope = 0; | |
3597 | } | |
69fbadd5 | 3598 | |
edb3359d | 3599 | if (within_current_scope) |
c906108c SS |
3600 | /* If we end up stopping, the current frame will get selected |
3601 | in normal_stop. So this call to select_frame won't affect | |
3602 | the user. */ | |
0f7d239c | 3603 | select_frame (fr); |
c906108c | 3604 | } |
c5aa993b | 3605 | |
c906108c SS |
3606 | if (within_current_scope) |
3607 | { | |
3608 | /* We use value_{,free_to_}mark because it could be a | |
3609 | *long* time before we return to the command level and | |
c5aa993b JM |
3610 | call free_all_values. We can't call free_all_values because |
3611 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3612 | |
278cd55f | 3613 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3614 | struct value *new_val; |
3615 | ||
3616 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3617 | |
3618 | /* We use value_equal_contents instead of value_equal because the latter | |
3619 | coerces an array to a pointer, thus comparing just the address of the | |
3620 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3621 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3622 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3623 | { |
fa4727a6 DJ |
3624 | if (new_val != NULL) |
3625 | { | |
3626 | release_value (new_val); | |
3627 | value_free_to_mark (mark); | |
3628 | } | |
c906108c SS |
3629 | bs->old_val = b->val; |
3630 | b->val = new_val; | |
fa4727a6 | 3631 | b->val_valid = 1; |
c906108c SS |
3632 | return WP_VALUE_CHANGED; |
3633 | } | |
3634 | else | |
3635 | { | |
60e1c644 | 3636 | /* Nothing changed. */ |
c906108c | 3637 | value_free_to_mark (mark); |
c906108c SS |
3638 | return WP_VALUE_NOT_CHANGED; |
3639 | } | |
3640 | } | |
3641 | else | |
3642 | { | |
3643 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3644 | if we temporarily ignored the watchpoint, then when |
3645 | we reenter the block in which it is valid it contains | |
3646 | garbage (in the case of a function, it may have two | |
3647 | garbage values, one before and one after the prologue). | |
3648 | So we can't even detect the first assignment to it and | |
3649 | watch after that (since the garbage may or may not equal | |
3650 | the first value assigned). */ | |
4ce44c66 JM |
3651 | /* We print all the stop information in print_it_typical(), but |
3652 | in this case, by the time we call print_it_typical() this bp | |
3653 | will be deleted already. So we have no choice but print the | |
3654 | information here. */ | |
9dc5e2a9 | 3655 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3656 | ui_out_field_string |
3657 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3658 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3659 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3660 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3661 | which its expression is valid.\n"); | |
4ce44c66 | 3662 | |
c906108c | 3663 | if (b->related_breakpoint) |
60e1c644 PA |
3664 | { |
3665 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3666 | b->related_breakpoint->related_breakpoint = NULL; | |
3667 | b->related_breakpoint = NULL; | |
3668 | } | |
b5de0fa7 | 3669 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3670 | |
3671 | return WP_DELETED; | |
3672 | } | |
3673 | } | |
3674 | ||
18a18393 VP |
3675 | /* Return true if it looks like target has stopped due to hitting |
3676 | breakpoint location BL. This function does not check if we | |
3677 | should stop, only if BL explains the stop. */ | |
3678 | static int | |
6c95b8df PA |
3679 | bpstat_check_location (const struct bp_location *bl, |
3680 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3681 | { |
3682 | struct breakpoint *b = bl->owner; | |
3683 | ||
e8595ef6 SS |
3684 | /* By definition, the inferior does not report stops at |
3685 | tracepoints. */ | |
d77f58be | 3686 | if (is_tracepoint (b)) |
e8595ef6 SS |
3687 | return 0; |
3688 | ||
cc60f2e3 | 3689 | if (!is_watchpoint (b) |
18a18393 | 3690 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3691 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3692 | { |
6c95b8df PA |
3693 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3694 | aspace, bp_addr)) | |
18a18393 VP |
3695 | return 0; |
3696 | if (overlay_debugging /* unmapped overlay section */ | |
3697 | && section_is_overlay (bl->section) | |
3698 | && !section_is_mapped (bl->section)) | |
3699 | return 0; | |
3700 | } | |
cc60f2e3 | 3701 | |
18a18393 VP |
3702 | /* Continuable hardware watchpoints are treated as non-existent if the |
3703 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3704 | some data address). Otherwise gdb won't stop on a break instruction | |
3705 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3706 | been defined. Also skip watchpoints which we know did not trigger | |
3707 | (did not match the data address). */ | |
cc60f2e3 PA |
3708 | |
3709 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3710 | && b->watchpoint_triggered == watch_triggered_no) |
3711 | return 0; | |
3712 | ||
3713 | if (b->type == bp_hardware_breakpoint) | |
3714 | { | |
3715 | if (bl->address != bp_addr) | |
3716 | return 0; | |
3717 | if (overlay_debugging /* unmapped overlay section */ | |
3718 | && section_is_overlay (bl->section) | |
3719 | && !section_is_mapped (bl->section)) | |
3720 | return 0; | |
3721 | } | |
ce78b96d | 3722 | |
ce78b96d JB |
3723 | if (b->type == bp_catchpoint) |
3724 | { | |
3725 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3726 | if (!b->ops->breakpoint_hit (b)) | |
3727 | return 0; | |
3728 | } | |
3729 | ||
18a18393 VP |
3730 | return 1; |
3731 | } | |
3732 | ||
3733 | /* If BS refers to a watchpoint, determine if the watched values | |
3734 | has actually changed, and we should stop. If not, set BS->stop | |
3735 | to 0. */ | |
3736 | static void | |
3737 | bpstat_check_watchpoint (bpstat bs) | |
3738 | { | |
3739 | const struct bp_location *bl = bs->breakpoint_at; | |
3740 | struct breakpoint *b = bl->owner; | |
3741 | ||
cc60f2e3 | 3742 | if (is_watchpoint (b)) |
18a18393 | 3743 | { |
18a18393 VP |
3744 | int must_check_value = 0; |
3745 | ||
3746 | if (b->type == bp_watchpoint) | |
3747 | /* For a software watchpoint, we must always check the | |
3748 | watched value. */ | |
3749 | must_check_value = 1; | |
3750 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3751 | /* We have a hardware watchpoint (read, write, or access) | |
3752 | and the target earlier reported an address watched by | |
3753 | this watchpoint. */ | |
3754 | must_check_value = 1; | |
3755 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3756 | && b->type == bp_hardware_watchpoint) | |
3757 | /* We were stopped by a hardware watchpoint, but the target could | |
3758 | not report the data address. We must check the watchpoint's | |
3759 | value. Access and read watchpoints are out of luck; without | |
3760 | a data address, we can't figure it out. */ | |
3761 | must_check_value = 1; | |
3762 | ||
3763 | if (must_check_value) | |
3764 | { | |
3765 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3766 | b->number); | |
3767 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3768 | int e = catch_errors (watchpoint_check, bs, message, | |
3769 | RETURN_MASK_ALL); | |
3770 | do_cleanups (cleanups); | |
3771 | switch (e) | |
3772 | { | |
3773 | case WP_DELETED: | |
3774 | /* We've already printed what needs to be printed. */ | |
3775 | bs->print_it = print_it_done; | |
3776 | /* Stop. */ | |
3777 | break; | |
60e1c644 PA |
3778 | case WP_IGNORE: |
3779 | bs->print_it = print_it_noop; | |
3780 | bs->stop = 0; | |
3781 | break; | |
18a18393 VP |
3782 | case WP_VALUE_CHANGED: |
3783 | if (b->type == bp_read_watchpoint) | |
3784 | { | |
85d721b8 PA |
3785 | /* There are two cases to consider here: |
3786 | ||
3787 | 1. we're watching the triggered memory for reads. | |
3788 | In that case, trust the target, and always report | |
3789 | the watchpoint hit to the user. Even though | |
3790 | reads don't cause value changes, the value may | |
3791 | have changed since the last time it was read, and | |
3792 | since we're not trapping writes, we will not see | |
3793 | those, and as such we should ignore our notion of | |
3794 | old value. | |
3795 | ||
3796 | 2. we're watching the triggered memory for both | |
3797 | reads and writes. There are two ways this may | |
3798 | happen: | |
3799 | ||
3800 | 2.1. this is a target that can't break on data | |
3801 | reads only, but can break on accesses (reads or | |
3802 | writes), such as e.g., x86. We detect this case | |
3803 | at the time we try to insert read watchpoints. | |
3804 | ||
3805 | 2.2. otherwise, the target supports read | |
3806 | watchpoints, but, the user set an access or write | |
3807 | watchpoint watching the same memory as this read | |
3808 | watchpoint. | |
3809 | ||
3810 | If we're watching memory writes as well as reads, | |
3811 | ignore watchpoint hits when we find that the | |
3812 | value hasn't changed, as reads don't cause | |
3813 | changes. This still gives false positives when | |
3814 | the program writes the same value to memory as | |
3815 | what there was already in memory (we will confuse | |
3816 | it for a read), but it's much better than | |
3817 | nothing. */ | |
3818 | ||
3819 | int other_write_watchpoint = 0; | |
3820 | ||
3821 | if (bl->watchpoint_type == hw_read) | |
3822 | { | |
3823 | struct breakpoint *other_b; | |
3824 | ||
3825 | ALL_BREAKPOINTS (other_b) | |
3826 | if ((other_b->type == bp_hardware_watchpoint | |
3827 | || other_b->type == bp_access_watchpoint) | |
3828 | && (other_b->watchpoint_triggered | |
3829 | == watch_triggered_yes)) | |
3830 | { | |
3831 | other_write_watchpoint = 1; | |
3832 | break; | |
3833 | } | |
3834 | } | |
3835 | ||
3836 | if (other_write_watchpoint | |
3837 | || bl->watchpoint_type == hw_access) | |
3838 | { | |
3839 | /* We're watching the same memory for writes, | |
3840 | and the value changed since the last time we | |
3841 | updated it, so this trap must be for a write. | |
3842 | Ignore it. */ | |
3843 | bs->print_it = print_it_noop; | |
3844 | bs->stop = 0; | |
3845 | } | |
18a18393 VP |
3846 | } |
3847 | break; | |
3848 | case WP_VALUE_NOT_CHANGED: | |
3849 | if (b->type == bp_hardware_watchpoint | |
3850 | || b->type == bp_watchpoint) | |
3851 | { | |
3852 | /* Don't stop: write watchpoints shouldn't fire if | |
3853 | the value hasn't changed. */ | |
3854 | bs->print_it = print_it_noop; | |
3855 | bs->stop = 0; | |
3856 | } | |
3857 | /* Stop. */ | |
3858 | break; | |
3859 | default: | |
3860 | /* Can't happen. */ | |
3861 | case 0: | |
3862 | /* Error from catch_errors. */ | |
3863 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3864 | if (b->related_breakpoint) | |
3865 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3866 | b->disposition = disp_del_at_next_stop; | |
3867 | /* We've already printed what needs to be printed. */ | |
3868 | bs->print_it = print_it_done; | |
3869 | break; | |
3870 | } | |
3871 | } | |
3872 | else /* must_check_value == 0 */ | |
3873 | { | |
3874 | /* This is a case where some watchpoint(s) triggered, but | |
3875 | not at the address of this watchpoint, or else no | |
3876 | watchpoint triggered after all. So don't print | |
3877 | anything for this watchpoint. */ | |
3878 | bs->print_it = print_it_noop; | |
3879 | bs->stop = 0; | |
3880 | } | |
3881 | } | |
3882 | } | |
3883 | ||
3884 | ||
3885 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3886 | of breakpoint referred to by BS. If we should not stop for this | |
3887 | breakpoint, set BS->stop to 0. */ | |
3888 | static void | |
3889 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3890 | { | |
3891 | int thread_id = pid_to_thread_id (ptid); | |
3892 | const struct bp_location *bl = bs->breakpoint_at; | |
3893 | struct breakpoint *b = bl->owner; | |
3894 | ||
3895 | if (frame_id_p (b->frame_id) | |
edb3359d | 3896 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3897 | bs->stop = 0; |
3898 | else if (bs->stop) | |
3899 | { | |
3900 | int value_is_zero = 0; | |
60e1c644 PA |
3901 | struct expression *cond; |
3902 | ||
18a18393 VP |
3903 | /* If this is a scope breakpoint, mark the associated |
3904 | watchpoint as triggered so that we will handle the | |
3905 | out-of-scope event. We'll get to the watchpoint next | |
3906 | iteration. */ | |
3907 | if (b->type == bp_watchpoint_scope) | |
3908 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
60e1c644 PA |
3909 | |
3910 | if (is_watchpoint (b)) | |
3911 | cond = b->cond_exp; | |
3912 | else | |
3913 | cond = bl->cond; | |
3914 | ||
3915 | if (cond && bl->owner->disposition != disp_del_at_next_stop) | |
18a18393 | 3916 | { |
60e1c644 PA |
3917 | int within_current_scope = 1; |
3918 | ||
c5bc3a77 DJ |
3919 | /* We use value_mark and value_free_to_mark because it could |
3920 | be a long time before we return to the command level and | |
3921 | call free_all_values. We can't call free_all_values | |
3922 | because we might be in the middle of evaluating a | |
3923 | function call. */ | |
3924 | struct value *mark = value_mark (); | |
3925 | ||
edb3359d DJ |
3926 | /* Need to select the frame, with all that implies so that |
3927 | the conditions will have the right context. Because we | |
3928 | use the frame, we will not see an inlined function's | |
3929 | variables when we arrive at a breakpoint at the start | |
3930 | of the inlined function; the current frame will be the | |
3931 | call site. */ | |
60e1c644 PA |
3932 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
3933 | select_frame (get_current_frame ()); | |
3934 | else | |
3935 | { | |
3936 | struct frame_info *frame; | |
3937 | ||
3938 | /* For local watchpoint expressions, which particular | |
3939 | instance of a local is being watched matters, so we | |
3940 | keep track of the frame to evaluate the expression | |
3941 | in. To evaluate the condition however, it doesn't | |
3942 | really matter which instantiation of the function | |
3943 | where the condition makes sense triggers the | |
3944 | watchpoint. This allows an expression like "watch | |
3945 | global if q > 10" set in `func', catch writes to | |
3946 | global on all threads that call `func', or catch | |
3947 | writes on all recursive calls of `func' by a single | |
3948 | thread. We simply always evaluate the condition in | |
3949 | the innermost frame that's executing where it makes | |
3950 | sense to evaluate the condition. It seems | |
3951 | intuitive. */ | |
3952 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
3953 | if (frame != NULL) | |
3954 | select_frame (frame); | |
3955 | else | |
3956 | within_current_scope = 0; | |
3957 | } | |
3958 | if (within_current_scope) | |
3959 | value_is_zero | |
3960 | = catch_errors (breakpoint_cond_eval, cond, | |
3961 | "Error in testing breakpoint condition:\n", | |
3962 | RETURN_MASK_ALL); | |
3963 | else | |
3964 | { | |
3965 | warning (_("Watchpoint condition cannot be tested " | |
3966 | "in the current scope")); | |
3967 | /* If we failed to set the right context for this | |
3968 | watchpoint, unconditionally report it. */ | |
3969 | value_is_zero = 0; | |
3970 | } | |
18a18393 | 3971 | /* FIXME-someday, should give breakpoint # */ |
c5bc3a77 | 3972 | value_free_to_mark (mark); |
18a18393 | 3973 | } |
60e1c644 PA |
3974 | |
3975 | if (cond && value_is_zero) | |
18a18393 VP |
3976 | { |
3977 | bs->stop = 0; | |
3978 | } | |
3979 | else if (b->thread != -1 && b->thread != thread_id) | |
3980 | { | |
3981 | bs->stop = 0; | |
3982 | } | |
3983 | else if (b->ignore_count > 0) | |
3984 | { | |
3985 | b->ignore_count--; | |
3986 | annotate_ignore_count_change (); | |
3987 | bs->stop = 0; | |
3988 | /* Increase the hit count even though we don't | |
3989 | stop. */ | |
3990 | ++(b->hit_count); | |
3991 | } | |
3992 | } | |
3993 | } | |
3994 | ||
3995 | ||
9709f61c | 3996 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3997 | BP_ADDR in thread PTID. |
c906108c | 3998 | |
d983da9c | 3999 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
4000 | don't understand this stop. Result is a chain of bpstat's such that: |
4001 | ||
c5aa993b | 4002 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4003 | |
c5aa993b | 4004 | if we understand why we stopped, the result is not null. |
c906108c | 4005 | |
c5aa993b JM |
4006 | Each element of the chain refers to a particular breakpoint or |
4007 | watchpoint at which we have stopped. (We may have stopped for | |
4008 | several reasons concurrently.) | |
c906108c | 4009 | |
c5aa993b JM |
4010 | Each element of the chain has valid next, breakpoint_at, |
4011 | commands, FIXME??? fields. */ | |
c906108c SS |
4012 | |
4013 | bpstat | |
6c95b8df PA |
4014 | bpstat_stop_status (struct address_space *aspace, |
4015 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4016 | { |
0d381245 | 4017 | struct breakpoint *b = NULL; |
afe38095 | 4018 | struct bp_location *bl; |
20874c92 | 4019 | struct bp_location *loc; |
c906108c SS |
4020 | /* Root of the chain of bpstat's */ |
4021 | struct bpstats root_bs[1]; | |
4022 | /* Pointer to the last thing in the chain currently. */ | |
4023 | bpstat bs = root_bs; | |
20874c92 | 4024 | int ix; |
429374b8 | 4025 | int need_remove_insert; |
c906108c | 4026 | |
429374b8 JK |
4027 | /* ALL_BP_LOCATIONS iteration would break across |
4028 | update_global_location_list possibly executed by | |
4029 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 4030 | |
429374b8 JK |
4031 | ALL_BREAKPOINTS (b) |
4032 | { | |
4033 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4034 | continue; | |
a5606eee | 4035 | |
429374b8 JK |
4036 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4037 | { | |
4038 | /* For hardware watchpoints, we look only at the first location. | |
cc60f2e3 PA |
4039 | The watchpoint_check function will work on the entire expression, |
4040 | not the individual locations. For read watchpoints, the | |
4041 | watchpoints_triggered function has checked all locations | |
429374b8 JK |
4042 | already. */ |
4043 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
4044 | break; | |
18a18393 | 4045 | |
429374b8 JK |
4046 | if (bl->shlib_disabled) |
4047 | continue; | |
c5aa993b | 4048 | |
429374b8 JK |
4049 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4050 | continue; | |
c5aa993b | 4051 | |
429374b8 | 4052 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 4053 | |
429374b8 | 4054 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 4055 | |
429374b8 JK |
4056 | /* Assume we stop. Should we find watchpoint that is not actually |
4057 | triggered, or if condition of breakpoint is false, we'll reset | |
4058 | 'stop' to 0. */ | |
4059 | bs->stop = 1; | |
4060 | bs->print = 1; | |
d983da9c | 4061 | |
429374b8 JK |
4062 | bpstat_check_watchpoint (bs); |
4063 | if (!bs->stop) | |
4064 | continue; | |
18a18393 | 4065 | |
429374b8 | 4066 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d TT |
4067 | || b->type == bp_longjmp_master |
4068 | || b->type == bp_std_terminate_master) | |
429374b8 JK |
4069 | /* We do not stop for these. */ |
4070 | bs->stop = 0; | |
4071 | else | |
4072 | bpstat_check_breakpoint_conditions (bs, ptid); | |
4073 | ||
4074 | if (bs->stop) | |
4075 | { | |
4076 | ++(b->hit_count); | |
c906108c | 4077 | |
429374b8 JK |
4078 | /* We will stop here */ |
4079 | if (b->disposition == disp_disable) | |
4080 | { | |
4081 | if (b->enable_state != bp_permanent) | |
4082 | b->enable_state = bp_disabled; | |
4083 | update_global_location_list (0); | |
4084 | } | |
4085 | if (b->silent) | |
4086 | bs->print = 0; | |
4087 | bs->commands = b->commands; | |
9add0f1b TT |
4088 | incref_counted_command_line (bs->commands); |
4089 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4090 | if (bs->commands_left | |
4091 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4092 | || (xdb_commands | |
4093 | && strcmp ("Q", | |
4094 | bs->commands_left->line) == 0))) | |
429374b8 | 4095 | { |
9add0f1b | 4096 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4097 | bs->print = 0; |
4098 | } | |
429374b8 JK |
4099 | } |
4100 | ||
4101 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4102 | if (bs->stop == 0 || bs->print == 0) | |
4103 | bs->print_it = print_it_noop; | |
4104 | } | |
4105 | } | |
876fa593 | 4106 | |
20874c92 VP |
4107 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
4108 | { | |
6c95b8df PA |
4109 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
4110 | aspace, bp_addr)) | |
20874c92 VP |
4111 | { |
4112 | bs = bpstat_alloc (loc, bs); | |
4113 | /* For hits of moribund locations, we should just proceed. */ | |
4114 | bs->stop = 0; | |
4115 | bs->print = 0; | |
4116 | bs->print_it = print_it_noop; | |
4117 | } | |
4118 | } | |
4119 | ||
c906108c | 4120 | bs->next = NULL; /* Terminate the chain */ |
c906108c | 4121 | |
d983da9c DJ |
4122 | /* If we aren't stopping, the value of some hardware watchpoint may |
4123 | not have changed, but the intermediate memory locations we are | |
4124 | watching may have. Don't bother if we're stopping; this will get | |
4125 | done later. */ | |
d832cb68 | 4126 | need_remove_insert = 0; |
1f7ccab2 | 4127 | if (! bpstat_causes_stop (root_bs->next)) |
d983da9c DJ |
4128 | for (bs = root_bs->next; bs != NULL; bs = bs->next) |
4129 | if (!bs->stop | |
20874c92 | 4130 | && bs->breakpoint_at->owner |
2d134ed3 | 4131 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 4132 | { |
2d134ed3 PA |
4133 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
4134 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
4135 | Prevent further code from trying to use it. */ | |
a5606eee | 4136 | bs->breakpoint_at = NULL; |
d832cb68 | 4137 | need_remove_insert = 1; |
d983da9c DJ |
4138 | } |
4139 | ||
d832cb68 | 4140 | if (need_remove_insert) |
2d134ed3 | 4141 | update_global_location_list (1); |
d832cb68 | 4142 | |
d983da9c | 4143 | return root_bs->next; |
c906108c SS |
4144 | } |
4145 | \f | |
4146 | /* Tell what to do about this bpstat. */ | |
4147 | struct bpstat_what | |
fba45db2 | 4148 | bpstat_what (bpstat bs) |
c906108c SS |
4149 | { |
4150 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
4151 | enum class |
4152 | { | |
4153 | /* This bpstat element has no effect on the main_action. */ | |
4154 | no_effect = 0, | |
4155 | ||
4156 | /* There was a watchpoint, stop but don't print. */ | |
4157 | wp_silent, | |
c906108c | 4158 | |
c5aa993b JM |
4159 | /* There was a watchpoint, stop and print. */ |
4160 | wp_noisy, | |
c906108c | 4161 | |
c5aa993b JM |
4162 | /* There was a breakpoint but we're not stopping. */ |
4163 | bp_nostop, | |
c906108c | 4164 | |
c5aa993b JM |
4165 | /* There was a breakpoint, stop but don't print. */ |
4166 | bp_silent, | |
c906108c | 4167 | |
c5aa993b JM |
4168 | /* There was a breakpoint, stop and print. */ |
4169 | bp_noisy, | |
c906108c | 4170 | |
c5aa993b JM |
4171 | /* We hit the longjmp breakpoint. */ |
4172 | long_jump, | |
c906108c | 4173 | |
c5aa993b JM |
4174 | /* We hit the longjmp_resume breakpoint. */ |
4175 | long_resume, | |
c906108c | 4176 | |
c5aa993b JM |
4177 | /* We hit the step_resume breakpoint. */ |
4178 | step_resume, | |
c906108c | 4179 | |
c5aa993b JM |
4180 | /* We hit the shared library event breakpoint. */ |
4181 | shlib_event, | |
c906108c | 4182 | |
4efc6507 DE |
4183 | /* We hit the jit event breakpoint. */ |
4184 | jit_event, | |
4185 | ||
c5aa993b JM |
4186 | /* This is just used to count how many enums there are. */ |
4187 | class_last | |
c906108c SS |
4188 | }; |
4189 | ||
4190 | /* Here is the table which drives this routine. So that we can | |
4191 | format it pretty, we define some abbreviations for the | |
4192 | enum bpstat_what codes. */ | |
4193 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
4194 | #define ss BPSTAT_WHAT_STOP_SILENT | |
4195 | #define sn BPSTAT_WHAT_STOP_NOISY | |
4196 | #define sgl BPSTAT_WHAT_SINGLE | |
4197 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
4198 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 4199 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 4200 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 4201 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
4202 | |
4203 | /* "Can't happen." Might want to print an error message. | |
4204 | abort() is not out of the question, but chances are GDB is just | |
4205 | a bit confused, not unusable. */ | |
4206 | #define err BPSTAT_WHAT_STOP_NOISY | |
4207 | ||
4208 | /* Given an old action and a class, come up with a new action. */ | |
4209 | /* One interesting property of this table is that wp_silent is the same | |
4210 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
4211 | after stopping, the check for whether to step over a breakpoint | |
4212 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
4213 | reference to how we stopped. We retain separate wp_silent and |
4214 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
4215 | |
4216 | Another possibly interesting property of this table is that | |
4217 | there's a partial ordering, priority-like, of the actions. Once | |
4218 | you've decided that some action is appropriate, you'll never go | |
4219 | back and decide something of a lower priority is better. The | |
4220 | ordering is: | |
4221 | ||
4efc6507 DE |
4222 | kc < jit clr sgl shl slr sn sr ss |
4223 | sgl < jit shl slr sn sr ss | |
4224 | slr < jit err shl sn sr ss | |
4225 | clr < jit err shl sn sr ss | |
4226 | ss < jit shl sn sr | |
4227 | sn < jit shl sr | |
4228 | jit < shl sr | |
d81191fc | 4229 | shl < sr |
4d5b2cd7 | 4230 | sr < |
c5aa993b | 4231 | |
43ff13b4 JM |
4232 | What I think this means is that we don't need a damned table |
4233 | here. If you just put the rows and columns in the right order, | |
4234 | it'd look awfully regular. We could simply walk the bpstat list | |
4235 | and choose the highest priority action we find, with a little | |
78b6a731 | 4236 | logic to handle the 'err' cases. */ |
c906108c SS |
4237 | |
4238 | /* step_resume entries: a step resume breakpoint overrides another | |
4239 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 4240 | at where we set the step_resume breakpoint). */ |
c906108c SS |
4241 | |
4242 | static const enum bpstat_what_main_action | |
c5aa993b JM |
4243 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
4244 | { | |
4245 | /* old action */ | |
4efc6507 DE |
4246 | /* kc ss sn sgl slr clr sr shl jit */ |
4247 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
4248 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4249 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4250 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
4251 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4252 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4253 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
4254 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
4255 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
4256 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
4257 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 4258 | }; |
c906108c SS |
4259 | |
4260 | #undef kc | |
4261 | #undef ss | |
4262 | #undef sn | |
4263 | #undef sgl | |
4264 | #undef slr | |
4265 | #undef clr | |
c906108c SS |
4266 | #undef err |
4267 | #undef sr | |
4268 | #undef ts | |
4269 | #undef shl | |
4efc6507 | 4270 | #undef jit |
c906108c SS |
4271 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
4272 | struct bpstat_what retval; | |
4273 | ||
aa7d318d | 4274 | retval.call_dummy = STOP_NONE; |
c906108c SS |
4275 | for (; bs != NULL; bs = bs->next) |
4276 | { | |
4277 | enum class bs_class = no_effect; | |
4278 | if (bs->breakpoint_at == NULL) | |
4279 | /* I suspect this can happen if it was a momentary breakpoint | |
4280 | which has since been deleted. */ | |
4281 | continue; | |
20874c92 VP |
4282 | if (bs->breakpoint_at->owner == NULL) |
4283 | bs_class = bp_nostop; | |
4284 | else | |
4f8d1dc6 | 4285 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
4286 | { |
4287 | case bp_none: | |
4288 | continue; | |
4289 | ||
4290 | case bp_breakpoint: | |
4291 | case bp_hardware_breakpoint: | |
4292 | case bp_until: | |
4293 | case bp_finish: | |
4294 | if (bs->stop) | |
4295 | { | |
4296 | if (bs->print) | |
4297 | bs_class = bp_noisy; | |
4298 | else | |
4299 | bs_class = bp_silent; | |
4300 | } | |
4301 | else | |
4302 | bs_class = bp_nostop; | |
4303 | break; | |
4304 | case bp_watchpoint: | |
4305 | case bp_hardware_watchpoint: | |
4306 | case bp_read_watchpoint: | |
4307 | case bp_access_watchpoint: | |
4308 | if (bs->stop) | |
4309 | { | |
4310 | if (bs->print) | |
4311 | bs_class = wp_noisy; | |
4312 | else | |
4313 | bs_class = wp_silent; | |
4314 | } | |
4315 | else | |
53a5351d JM |
4316 | /* There was a watchpoint, but we're not stopping. |
4317 | This requires no further action. */ | |
c906108c SS |
4318 | bs_class = no_effect; |
4319 | break; | |
4320 | case bp_longjmp: | |
4321 | bs_class = long_jump; | |
4322 | break; | |
4323 | case bp_longjmp_resume: | |
4324 | bs_class = long_resume; | |
4325 | break; | |
4326 | case bp_step_resume: | |
4327 | if (bs->stop) | |
4328 | { | |
4329 | bs_class = step_resume; | |
4330 | } | |
4331 | else | |
4332 | /* It is for the wrong frame. */ | |
4333 | bs_class = bp_nostop; | |
4334 | break; | |
c906108c SS |
4335 | case bp_watchpoint_scope: |
4336 | bs_class = bp_nostop; | |
4337 | break; | |
c5aa993b JM |
4338 | case bp_shlib_event: |
4339 | bs_class = shlib_event; | |
4340 | break; | |
4efc6507 DE |
4341 | case bp_jit_event: |
4342 | bs_class = jit_event; | |
4343 | break; | |
c4093a6a | 4344 | case bp_thread_event: |
1900040c | 4345 | case bp_overlay_event: |
0fd8e87f | 4346 | case bp_longjmp_master: |
aa7d318d | 4347 | case bp_std_terminate_master: |
c4093a6a JM |
4348 | bs_class = bp_nostop; |
4349 | break; | |
ce78b96d | 4350 | case bp_catchpoint: |
c5aa993b JM |
4351 | if (bs->stop) |
4352 | { | |
4353 | if (bs->print) | |
4354 | bs_class = bp_noisy; | |
4355 | else | |
4356 | bs_class = bp_silent; | |
4357 | } | |
4358 | else | |
53a5351d JM |
4359 | /* There was a catchpoint, but we're not stopping. |
4360 | This requires no further action. */ | |
c5aa993b JM |
4361 | bs_class = no_effect; |
4362 | break; | |
c906108c | 4363 | case bp_call_dummy: |
53a5351d JM |
4364 | /* Make sure the action is stop (silent or noisy), |
4365 | so infrun.c pops the dummy frame. */ | |
c906108c | 4366 | bs_class = bp_silent; |
aa7d318d TT |
4367 | retval.call_dummy = STOP_STACK_DUMMY; |
4368 | break; | |
4369 | case bp_std_terminate: | |
4370 | /* Make sure the action is stop (silent or noisy), | |
4371 | so infrun.c pops the dummy frame. */ | |
4372 | bs_class = bp_silent; | |
4373 | retval.call_dummy = STOP_STD_TERMINATE; | |
c906108c | 4374 | break; |
1042e4c0 | 4375 | case bp_tracepoint: |
7a697b8d | 4376 | case bp_fast_tracepoint: |
1042e4c0 SS |
4377 | /* Tracepoint hits should not be reported back to GDB, and |
4378 | if one got through somehow, it should have been filtered | |
4379 | out already. */ | |
4380 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4381 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 4382 | break; |
c906108c | 4383 | } |
c5aa993b | 4384 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
4385 | } |
4386 | retval.main_action = current_action; | |
4387 | return retval; | |
4388 | } | |
4389 | ||
4390 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4391 | without hardware support). This isn't related to a specific bpstat, | |
4392 | just to things like whether watchpoints are set. */ | |
4393 | ||
c5aa993b | 4394 | int |
fba45db2 | 4395 | bpstat_should_step (void) |
c906108c SS |
4396 | { |
4397 | struct breakpoint *b; | |
4398 | ALL_BREAKPOINTS (b) | |
717a8278 | 4399 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4400 | return 1; |
c906108c SS |
4401 | return 0; |
4402 | } | |
4403 | ||
67822962 PA |
4404 | int |
4405 | bpstat_causes_stop (bpstat bs) | |
4406 | { | |
4407 | for (; bs != NULL; bs = bs->next) | |
4408 | if (bs->stop) | |
4409 | return 1; | |
4410 | ||
4411 | return 0; | |
4412 | } | |
4413 | ||
c906108c | 4414 | \f |
c5aa993b | 4415 | |
859825b8 JK |
4416 | /* Print the LOC location out of the list of B->LOC locations. */ |
4417 | ||
0d381245 VP |
4418 | static void print_breakpoint_location (struct breakpoint *b, |
4419 | struct bp_location *loc, | |
4420 | char *wrap_indent, | |
4421 | struct ui_stream *stb) | |
4422 | { | |
6c95b8df PA |
4423 | struct cleanup *old_chain = save_current_program_space (); |
4424 | ||
859825b8 JK |
4425 | if (loc != NULL && loc->shlib_disabled) |
4426 | loc = NULL; | |
4427 | ||
6c95b8df PA |
4428 | if (loc != NULL) |
4429 | set_current_program_space (loc->pspace); | |
4430 | ||
859825b8 | 4431 | if (b->source_file && loc) |
0d381245 VP |
4432 | { |
4433 | struct symbol *sym | |
4434 | = find_pc_sect_function (loc->address, loc->section); | |
4435 | if (sym) | |
4436 | { | |
4437 | ui_out_text (uiout, "in "); | |
4438 | ui_out_field_string (uiout, "func", | |
4439 | SYMBOL_PRINT_NAME (sym)); | |
4440 | ui_out_wrap_hint (uiout, wrap_indent); | |
4441 | ui_out_text (uiout, " at "); | |
4442 | } | |
4443 | ui_out_field_string (uiout, "file", b->source_file); | |
4444 | ui_out_text (uiout, ":"); | |
4445 | ||
4446 | if (ui_out_is_mi_like_p (uiout)) | |
4447 | { | |
4448 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4449 | char *fullname = symtab_to_fullname (sal.symtab); | |
4450 | ||
4451 | if (fullname) | |
4452 | ui_out_field_string (uiout, "fullname", fullname); | |
4453 | } | |
4454 | ||
4455 | ui_out_field_int (uiout, "line", b->line_number); | |
4456 | } | |
859825b8 | 4457 | else if (loc) |
0d381245 | 4458 | { |
22e722e1 DJ |
4459 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4460 | demangle, ""); | |
0d381245 VP |
4461 | ui_out_field_stream (uiout, "at", stb); |
4462 | } | |
859825b8 JK |
4463 | else |
4464 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4465 | |
4466 | do_cleanups (old_chain); | |
0d381245 VP |
4467 | } |
4468 | ||
c4093a6a | 4469 | /* Print B to gdb_stdout. */ |
c906108c | 4470 | static void |
0d381245 VP |
4471 | print_one_breakpoint_location (struct breakpoint *b, |
4472 | struct bp_location *loc, | |
4473 | int loc_number, | |
a6d9a66e | 4474 | struct bp_location **last_loc, |
6c95b8df PA |
4475 | int print_address_bits, |
4476 | int allflag) | |
c906108c | 4477 | { |
52f0bd74 | 4478 | struct command_line *l; |
c4093a6a JM |
4479 | struct ep_type_description |
4480 | { | |
4481 | enum bptype type; | |
4482 | char *description; | |
4483 | }; | |
4484 | static struct ep_type_description bptypes[] = | |
c906108c | 4485 | { |
c5aa993b JM |
4486 | {bp_none, "?deleted?"}, |
4487 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4488 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4489 | {bp_until, "until"}, |
4490 | {bp_finish, "finish"}, | |
4491 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4492 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4493 | {bp_read_watchpoint, "read watchpoint"}, |
4494 | {bp_access_watchpoint, "acc watchpoint"}, | |
4495 | {bp_longjmp, "longjmp"}, | |
4496 | {bp_longjmp_resume, "longjmp resume"}, | |
4497 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4498 | {bp_watchpoint_scope, "watchpoint scope"}, |
4499 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4500 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4501 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4502 | {bp_thread_event, "thread events"}, |
1900040c | 4503 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4504 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4505 | {bp_std_terminate_master, "std::terminate master"}, |
ce78b96d | 4506 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4507 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4508 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4509 | {bp_jit_event, "jit events"}, |
c5aa993b | 4510 | }; |
c4093a6a | 4511 | |
c2c6d25f | 4512 | static char bpenables[] = "nynny"; |
c906108c | 4513 | char wrap_indent[80]; |
8b93c638 JM |
4514 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4515 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4516 | struct cleanup *bkpt_chain; |
c906108c | 4517 | |
0d381245 VP |
4518 | int header_of_multiple = 0; |
4519 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4520 | struct value_print_options opts; |
4521 | ||
4522 | get_user_print_options (&opts); | |
0d381245 VP |
4523 | |
4524 | gdb_assert (!loc || loc_number != 0); | |
4525 | /* See comment in print_one_breakpoint concerning | |
4526 | treatment of breakpoints with single disabled | |
4527 | location. */ | |
4528 | if (loc == NULL | |
4529 | && (b->loc != NULL | |
4530 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4531 | header_of_multiple = 1; | |
4532 | if (loc == NULL) | |
4533 | loc = b->loc; | |
4534 | ||
c4093a6a | 4535 | annotate_record (); |
3b31d625 | 4536 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4537 | |
4538 | /* 1 */ | |
4539 | annotate_field (0); | |
0d381245 VP |
4540 | if (part_of_multiple) |
4541 | { | |
4542 | char *formatted; | |
0c6773c1 | 4543 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4544 | ui_out_field_string (uiout, "number", formatted); |
4545 | xfree (formatted); | |
4546 | } | |
4547 | else | |
4548 | { | |
4549 | ui_out_field_int (uiout, "number", b->number); | |
4550 | } | |
c4093a6a JM |
4551 | |
4552 | /* 2 */ | |
4553 | annotate_field (1); | |
0d381245 VP |
4554 | if (part_of_multiple) |
4555 | ui_out_field_skip (uiout, "type"); | |
4556 | else | |
4557 | { | |
4558 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4559 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4560 | internal_error (__FILE__, __LINE__, | |
4561 | _("bptypes table does not describe type #%d."), | |
4562 | (int) b->type); | |
4563 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4564 | } | |
c4093a6a JM |
4565 | |
4566 | /* 3 */ | |
4567 | annotate_field (2); | |
0d381245 VP |
4568 | if (part_of_multiple) |
4569 | ui_out_field_skip (uiout, "disp"); | |
4570 | else | |
2cec12e5 | 4571 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4572 | |
c4093a6a JM |
4573 | |
4574 | /* 4 */ | |
4575 | annotate_field (3); | |
0d381245 | 4576 | if (part_of_multiple) |
54e52265 | 4577 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4578 | else |
54e52265 VP |
4579 | ui_out_field_fmt (uiout, "enabled", "%c", |
4580 | bpenables[(int) b->enable_state]); | |
4581 | ui_out_spaces (uiout, 2); | |
0d381245 | 4582 | |
c4093a6a JM |
4583 | |
4584 | /* 5 and 6 */ | |
4585 | strcpy (wrap_indent, " "); | |
79a45b7d | 4586 | if (opts.addressprint) |
75ac9d7b | 4587 | { |
a6d9a66e | 4588 | if (print_address_bits <= 32) |
75ac9d7b MS |
4589 | strcat (wrap_indent, " "); |
4590 | else | |
4591 | strcat (wrap_indent, " "); | |
4592 | } | |
c906108c | 4593 | |
3086aeae | 4594 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4595 | { |
4596 | /* Although the print_one can possibly print | |
4597 | all locations, calling it here is not likely | |
4598 | to get any nice result. So, make sure there's | |
4599 | just one location. */ | |
4600 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4601 | b->ops->print_one (b, last_loc); |
0d381245 | 4602 | } |
3086aeae DJ |
4603 | else |
4604 | switch (b->type) | |
4605 | { | |
4606 | case bp_none: | |
4607 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4608 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4609 | break; |
c906108c | 4610 | |
3086aeae DJ |
4611 | case bp_watchpoint: |
4612 | case bp_hardware_watchpoint: | |
4613 | case bp_read_watchpoint: | |
4614 | case bp_access_watchpoint: | |
4615 | /* Field 4, the address, is omitted (which makes the columns | |
4616 | not line up too nicely with the headers, but the effect | |
4617 | is relatively readable). */ | |
79a45b7d | 4618 | if (opts.addressprint) |
3086aeae DJ |
4619 | ui_out_field_skip (uiout, "addr"); |
4620 | annotate_field (5); | |
fa8a61dc | 4621 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4622 | break; |
4623 | ||
3086aeae DJ |
4624 | case bp_breakpoint: |
4625 | case bp_hardware_breakpoint: | |
4626 | case bp_until: | |
4627 | case bp_finish: | |
4628 | case bp_longjmp: | |
4629 | case bp_longjmp_resume: | |
4630 | case bp_step_resume: | |
3086aeae DJ |
4631 | case bp_watchpoint_scope: |
4632 | case bp_call_dummy: | |
aa7d318d | 4633 | case bp_std_terminate: |
3086aeae DJ |
4634 | case bp_shlib_event: |
4635 | case bp_thread_event: | |
4636 | case bp_overlay_event: | |
0fd8e87f | 4637 | case bp_longjmp_master: |
aa7d318d | 4638 | case bp_std_terminate_master: |
1042e4c0 | 4639 | case bp_tracepoint: |
7a697b8d | 4640 | case bp_fast_tracepoint: |
4efc6507 | 4641 | case bp_jit_event: |
79a45b7d | 4642 | if (opts.addressprint) |
3086aeae DJ |
4643 | { |
4644 | annotate_field (4); | |
54e52265 | 4645 | if (header_of_multiple) |
0d381245 | 4646 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4647 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4648 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4649 | else |
5af949e3 UW |
4650 | ui_out_field_core_addr (uiout, "addr", |
4651 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4652 | } |
4653 | annotate_field (5); | |
0d381245 VP |
4654 | if (!header_of_multiple) |
4655 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4656 | if (b->loc) | |
a6d9a66e | 4657 | *last_loc = b->loc; |
3086aeae DJ |
4658 | break; |
4659 | } | |
c906108c | 4660 | |
6c95b8df PA |
4661 | |
4662 | /* For backward compatibility, don't display inferiors unless there | |
4663 | are several. */ | |
4664 | if (loc != NULL | |
4665 | && !header_of_multiple | |
4666 | && (allflag | |
4667 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4668 | && (number_of_program_spaces () > 1 | |
4669 | || number_of_inferiors () > 1) | |
4670 | && loc->owner->type != bp_catchpoint))) | |
4671 | { | |
4672 | struct inferior *inf; | |
4673 | int first = 1; | |
4674 | ||
4675 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4676 | { | |
4677 | if (inf->pspace == loc->pspace) | |
4678 | { | |
4679 | if (first) | |
4680 | { | |
4681 | first = 0; | |
4682 | ui_out_text (uiout, " inf "); | |
4683 | } | |
4684 | else | |
4685 | ui_out_text (uiout, ", "); | |
4686 | ui_out_text (uiout, plongest (inf->num)); | |
4687 | } | |
4688 | } | |
4689 | } | |
4690 | ||
4a306c9a | 4691 | if (!part_of_multiple) |
c4093a6a | 4692 | { |
4a306c9a JB |
4693 | if (b->thread != -1) |
4694 | { | |
4695 | /* FIXME: This seems to be redundant and lost here; see the | |
4696 | "stop only in" line a little further down. */ | |
4697 | ui_out_text (uiout, " thread "); | |
4698 | ui_out_field_int (uiout, "thread", b->thread); | |
4699 | } | |
4700 | else if (b->task != 0) | |
4701 | { | |
4702 | ui_out_text (uiout, " task "); | |
4703 | ui_out_field_int (uiout, "task", b->task); | |
4704 | } | |
c4093a6a JM |
4705 | } |
4706 | ||
8b93c638 | 4707 | ui_out_text (uiout, "\n"); |
c4093a6a | 4708 | |
0d381245 | 4709 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4710 | { |
4711 | annotate_field (6); | |
8b93c638 | 4712 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4713 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4714 | the frame ID. */ | |
5af949e3 UW |
4715 | ui_out_field_core_addr (uiout, "frame", |
4716 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4717 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4718 | } |
4719 | ||
0d381245 | 4720 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4721 | { |
f7f9143b JB |
4722 | /* We do not print the condition for Ada exception catchpoints |
4723 | because the condition is an internal implementation detail | |
4724 | that we do not want to expose to the user. */ | |
c4093a6a | 4725 | annotate_field (7); |
d77f58be | 4726 | if (is_tracepoint (b)) |
1042e4c0 SS |
4727 | ui_out_text (uiout, "\ttrace only if "); |
4728 | else | |
4729 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4730 | ui_out_field_string (uiout, "cond", b->cond_string); |
4731 | ui_out_text (uiout, "\n"); | |
4732 | } | |
4733 | ||
0d381245 | 4734 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4735 | { |
4736 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4737 | ui_out_text (uiout, "\tstop only in thread "); |
4738 | ui_out_field_int (uiout, "thread", b->thread); | |
4739 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4740 | } |
4741 | ||
63c715c6 | 4742 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4743 | { |
4744 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4745 | if (ep_is_catchpoint (b)) |
4746 | ui_out_text (uiout, "\tcatchpoint"); | |
4747 | else | |
4748 | ui_out_text (uiout, "\tbreakpoint"); | |
4749 | ui_out_text (uiout, " already hit "); | |
4750 | ui_out_field_int (uiout, "times", b->hit_count); | |
4751 | if (b->hit_count == 1) | |
4752 | ui_out_text (uiout, " time\n"); | |
4753 | else | |
4754 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4755 | } |
4756 | ||
fb40c209 AC |
4757 | /* Output the count also if it is zero, but only if this is |
4758 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4759 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4760 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4761 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4762 | |
0d381245 | 4763 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4764 | { |
4765 | annotate_field (8); | |
8b93c638 JM |
4766 | ui_out_text (uiout, "\tignore next "); |
4767 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4768 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4769 | } |
059fb39f | 4770 | |
9add0f1b | 4771 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4772 | if (!part_of_multiple && l) |
c4093a6a | 4773 | { |
3b31d625 EZ |
4774 | struct cleanup *script_chain; |
4775 | ||
c4093a6a | 4776 | annotate_field (9); |
3b31d625 | 4777 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4778 | print_command_lines (uiout, l, 4); |
3b31d625 | 4779 | do_cleanups (script_chain); |
c4093a6a | 4780 | } |
d24317b4 | 4781 | |
1042e4c0 SS |
4782 | if (!part_of_multiple && b->pass_count) |
4783 | { | |
4784 | annotate_field (10); | |
4785 | ui_out_text (uiout, "\tpass count "); | |
4786 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4787 | ui_out_text (uiout, " \n"); | |
4788 | } | |
4789 | ||
d24317b4 VP |
4790 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4791 | { | |
4792 | if (b->addr_string) | |
4793 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4794 | else if (b->exp_string) | |
4795 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4796 | } | |
4797 | ||
3b31d625 | 4798 | do_cleanups (bkpt_chain); |
8b93c638 | 4799 | do_cleanups (old_chain); |
c4093a6a | 4800 | } |
c5aa993b | 4801 | |
0d381245 VP |
4802 | static void |
4803 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4804 | struct bp_location **last_loc, int print_address_bits, |
4805 | int allflag) | |
0d381245 | 4806 | { |
6c95b8df PA |
4807 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4808 | print_address_bits, allflag); | |
0d381245 VP |
4809 | |
4810 | /* If this breakpoint has custom print function, | |
4811 | it's already printed. Otherwise, print individual | |
4812 | locations, if any. */ | |
4813 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4814 | { | |
4815 | /* If breakpoint has a single location that is | |
4816 | disabled, we print it as if it had | |
4817 | several locations, since otherwise it's hard to | |
4818 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4819 | situation. |
4820 | Note that while hardware watchpoints have | |
4821 | several locations internally, that's no a property | |
4822 | exposed to user. */ | |
0d381245 | 4823 | if (b->loc |
a5606eee | 4824 | && !is_hardware_watchpoint (b) |
0d381245 | 4825 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4826 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4827 | { |
4828 | struct bp_location *loc; | |
4829 | int n = 1; | |
4830 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4831 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4832 | print_address_bits, allflag); |
0d381245 VP |
4833 | } |
4834 | } | |
4835 | } | |
4836 | ||
a6d9a66e UW |
4837 | static int |
4838 | breakpoint_address_bits (struct breakpoint *b) | |
4839 | { | |
4840 | int print_address_bits = 0; | |
4841 | struct bp_location *loc; | |
4842 | ||
4843 | for (loc = b->loc; loc; loc = loc->next) | |
4844 | { | |
c7437ca6 PA |
4845 | int addr_bit; |
4846 | ||
4847 | /* Software watchpoints that aren't watching memory don't have | |
4848 | an address to print. */ | |
4849 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4850 | continue; | |
4851 | ||
4852 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4853 | if (addr_bit > print_address_bits) |
4854 | print_address_bits = addr_bit; | |
4855 | } | |
4856 | ||
4857 | return print_address_bits; | |
4858 | } | |
0d381245 | 4859 | |
c4093a6a JM |
4860 | struct captured_breakpoint_query_args |
4861 | { | |
4862 | int bnum; | |
4863 | }; | |
c5aa993b | 4864 | |
c4093a6a | 4865 | static int |
2b65245e | 4866 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4867 | { |
4868 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4869 | struct breakpoint *b; |
a6d9a66e | 4870 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
4871 | ALL_BREAKPOINTS (b) |
4872 | { | |
4873 | if (args->bnum == b->number) | |
c5aa993b | 4874 | { |
a6d9a66e | 4875 | int print_address_bits = breakpoint_address_bits (b); |
6c95b8df | 4876 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4877 | return GDB_RC_OK; |
c5aa993b | 4878 | } |
c4093a6a JM |
4879 | } |
4880 | return GDB_RC_NONE; | |
4881 | } | |
c5aa993b | 4882 | |
c4093a6a | 4883 | enum gdb_rc |
ce43223b | 4884 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4885 | { |
4886 | struct captured_breakpoint_query_args args; | |
4887 | args.bnum = bnum; | |
4888 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4889 | an error. */ | |
b0b13bb4 DJ |
4890 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4891 | error_message, RETURN_MASK_ALL) < 0) | |
4892 | return GDB_RC_FAIL; | |
4893 | else | |
4894 | return GDB_RC_OK; | |
c4093a6a | 4895 | } |
c5aa993b | 4896 | |
7f3b0473 AC |
4897 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4898 | catchpoints, et.al.). */ | |
4899 | ||
4900 | static int | |
4901 | user_settable_breakpoint (const struct breakpoint *b) | |
4902 | { | |
4903 | return (b->type == bp_breakpoint | |
ce78b96d | 4904 | || b->type == bp_catchpoint |
7f3b0473 | 4905 | || b->type == bp_hardware_breakpoint |
d77f58be | 4906 | || is_tracepoint (b) |
cc60f2e3 | 4907 | || is_watchpoint (b)); |
7f3b0473 AC |
4908 | } |
4909 | ||
4910 | /* Print information on user settable breakpoint (watchpoint, etc) | |
d77f58be SS |
4911 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
4912 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
4913 | FILTER is non-NULL, call it on each breakpoint and only include the | |
4914 | ones for which it returns non-zero. Return the total number of | |
4915 | breakpoints listed. */ | |
c906108c | 4916 | |
d77f58be SS |
4917 | static int |
4918 | breakpoint_1 (int bnum, int allflag, int (*filter) (const struct breakpoint *)) | |
c4093a6a | 4919 | { |
52f0bd74 | 4920 | struct breakpoint *b; |
a6d9a66e | 4921 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4922 | int nr_printable_breakpoints; |
3b31d625 | 4923 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4924 | struct value_print_options opts; |
a6d9a66e | 4925 | int print_address_bits = 0; |
c4093a6a | 4926 | |
79a45b7d TT |
4927 | get_user_print_options (&opts); |
4928 | ||
a6d9a66e UW |
4929 | /* Compute the number of rows in the table, as well as the |
4930 | size required for address fields. */ | |
7f3b0473 AC |
4931 | nr_printable_breakpoints = 0; |
4932 | ALL_BREAKPOINTS (b) | |
4933 | if (bnum == -1 | |
4934 | || bnum == b->number) | |
4935 | { | |
d77f58be SS |
4936 | /* If we have a filter, only list the breakpoints it accepts. */ |
4937 | if (filter && !filter (b)) | |
4938 | continue; | |
4939 | ||
7f3b0473 | 4940 | if (allflag || user_settable_breakpoint (b)) |
a6d9a66e UW |
4941 | { |
4942 | int addr_bit = breakpoint_address_bits (b); | |
4943 | if (addr_bit > print_address_bits) | |
4944 | print_address_bits = addr_bit; | |
4945 | ||
4946 | nr_printable_breakpoints++; | |
4947 | } | |
7f3b0473 AC |
4948 | } |
4949 | ||
79a45b7d | 4950 | if (opts.addressprint) |
3b31d625 EZ |
4951 | bkpttbl_chain |
4952 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4953 | "BreakpointTable"); | |
8b93c638 | 4954 | else |
3b31d625 EZ |
4955 | bkpttbl_chain |
4956 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4957 | "BreakpointTable"); | |
8b93c638 | 4958 | |
7f3b0473 | 4959 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4960 | annotate_breakpoints_headers (); |
4961 | if (nr_printable_breakpoints > 0) | |
4962 | annotate_field (0); | |
0d381245 | 4963 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4964 | if (nr_printable_breakpoints > 0) |
4965 | annotate_field (1); | |
4966 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4967 | if (nr_printable_breakpoints > 0) | |
4968 | annotate_field (2); | |
4969 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4970 | if (nr_printable_breakpoints > 0) | |
4971 | annotate_field (3); | |
54e52265 | 4972 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4973 | if (opts.addressprint) |
7f3b0473 | 4974 | { |
d7faa9e7 AC |
4975 | if (nr_printable_breakpoints > 0) |
4976 | annotate_field (4); | |
a6d9a66e | 4977 | if (print_address_bits <= 32) |
b25959ec | 4978 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4979 | else |
b25959ec | 4980 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4981 | } |
d7faa9e7 AC |
4982 | if (nr_printable_breakpoints > 0) |
4983 | annotate_field (5); | |
4984 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4985 | ui_out_table_body (uiout); | |
4986 | if (nr_printable_breakpoints > 0) | |
4987 | annotate_breakpoints_table (); | |
7f3b0473 | 4988 | |
c4093a6a | 4989 | ALL_BREAKPOINTS (b) |
bad56014 TT |
4990 | { |
4991 | QUIT; | |
c4093a6a JM |
4992 | if (bnum == -1 |
4993 | || bnum == b->number) | |
4994 | { | |
d77f58be SS |
4995 | /* If we have a filter, only list the breakpoints it accepts. */ |
4996 | if (filter && !filter (b)) | |
4997 | continue; | |
4998 | ||
c4093a6a JM |
4999 | /* We only print out user settable breakpoints unless the |
5000 | allflag is set. */ | |
7f3b0473 | 5001 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 5002 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5003 | } |
bad56014 | 5004 | } |
c4093a6a | 5005 | |
3b31d625 | 5006 | do_cleanups (bkpttbl_chain); |
698384cd | 5007 | |
7f3b0473 | 5008 | if (nr_printable_breakpoints == 0) |
c906108c | 5009 | { |
d77f58be SS |
5010 | /* If there's a filter, let the caller decide how to report empty list. */ |
5011 | if (!filter) | |
5012 | { | |
5013 | if (bnum == -1) | |
5014 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5015 | else | |
5016 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
5017 | bnum); | |
5018 | } | |
c906108c SS |
5019 | } |
5020 | else | |
c4093a6a | 5021 | { |
a6d9a66e UW |
5022 | if (last_loc && !server_command) |
5023 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5024 | } |
c906108c | 5025 | |
c4093a6a JM |
5026 | /* FIXME? Should this be moved up so that it is only called when |
5027 | there have been breakpoints? */ | |
c906108c | 5028 | annotate_breakpoints_table_end (); |
d77f58be SS |
5029 | |
5030 | return nr_printable_breakpoints; | |
c906108c SS |
5031 | } |
5032 | ||
ad443146 SS |
5033 | /* Display the value of default-collect in a way that is generally |
5034 | compatible with the breakpoint list. */ | |
5035 | ||
5036 | static void | |
5037 | default_collect_info (void) | |
5038 | { | |
5039 | /* If it has no value (which is frequently the case), say nothing; a | |
5040 | message like "No default-collect." gets in user's face when it's | |
5041 | not wanted. */ | |
5042 | if (!*default_collect) | |
5043 | return; | |
5044 | ||
5045 | /* The following phrase lines up nicely with per-tracepoint collect | |
5046 | actions. */ | |
5047 | ui_out_text (uiout, "default collect "); | |
5048 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5049 | ui_out_text (uiout, " \n"); | |
5050 | } | |
5051 | ||
c906108c | 5052 | static void |
fba45db2 | 5053 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5054 | { |
5055 | int bnum = -1; | |
5056 | ||
5057 | if (bnum_exp) | |
bb518678 | 5058 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5059 | |
d77f58be | 5060 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5061 | |
5062 | default_collect_info (); | |
d77f58be SS |
5063 | } |
5064 | ||
5065 | static void | |
5066 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5067 | { | |
5068 | int wpnum = -1, num_printed; | |
5069 | ||
5070 | if (wpnum_exp) | |
5071 | wpnum = parse_and_eval_long (wpnum_exp); | |
5072 | ||
5073 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5074 | ||
5075 | if (num_printed == 0) | |
5076 | { | |
5077 | if (wpnum == -1) | |
5078 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5079 | else | |
5080 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5081 | } | |
c906108c SS |
5082 | } |
5083 | ||
7a292a7a | 5084 | static void |
fba45db2 | 5085 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5086 | { |
5087 | int bnum = -1; | |
5088 | ||
5089 | if (bnum_exp) | |
bb518678 | 5090 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5091 | |
d77f58be | 5092 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5093 | |
5094 | default_collect_info (); | |
c906108c SS |
5095 | } |
5096 | ||
0d381245 | 5097 | static int |
714835d5 | 5098 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5099 | struct program_space *pspace, |
714835d5 | 5100 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5101 | { |
5102 | struct bp_location *bl = b->loc; | |
5103 | for (; bl; bl = bl->next) | |
5104 | { | |
6c95b8df PA |
5105 | if (bl->pspace == pspace |
5106 | && bl->address == pc | |
0d381245 VP |
5107 | && (!overlay_debugging || bl->section == section)) |
5108 | return 1; | |
5109 | } | |
5110 | return 0; | |
5111 | } | |
5112 | ||
6c95b8df PA |
5113 | /* Print a message describing any breakpoints set at PC. This |
5114 | concerns with logical breakpoints, so we match program spaces, not | |
5115 | address spaces. */ | |
c906108c SS |
5116 | |
5117 | static void | |
6c95b8df PA |
5118 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5119 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5120 | struct obj_section *section, int thread) |
c906108c | 5121 | { |
52f0bd74 AC |
5122 | int others = 0; |
5123 | struct breakpoint *b; | |
c906108c SS |
5124 | |
5125 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5126 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5127 | if (others > 0) |
5128 | { | |
a3f17187 AC |
5129 | if (others == 1) |
5130 | printf_filtered (_("Note: breakpoint ")); | |
5131 | else /* if (others == ???) */ | |
5132 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5133 | ALL_BREAKPOINTS (b) |
6c95b8df | 5134 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5135 | { |
5136 | others--; | |
5137 | printf_filtered ("%d", b->number); | |
5138 | if (b->thread == -1 && thread != -1) | |
5139 | printf_filtered (" (all threads)"); | |
5140 | else if (b->thread != -1) | |
5141 | printf_filtered (" (thread %d)", b->thread); | |
5142 | printf_filtered ("%s%s ", | |
059fb39f | 5143 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5144 | || b->enable_state == bp_call_disabled |
5145 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5146 | ? " (disabled)" |
5147 | : b->enable_state == bp_permanent | |
5148 | ? " (permanent)" | |
5149 | : ""), | |
5150 | (others > 1) ? "," | |
5151 | : ((others == 1) ? " and" : "")); | |
5152 | } | |
a3f17187 | 5153 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5154 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5155 | printf_filtered (".\n"); |
5156 | } | |
5157 | } | |
5158 | \f | |
5159 | /* Set the default place to put a breakpoint | |
5160 | for the `break' command with no arguments. */ | |
5161 | ||
5162 | void | |
6c95b8df PA |
5163 | set_default_breakpoint (int valid, struct program_space *pspace, |
5164 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5165 | int line) |
c906108c SS |
5166 | { |
5167 | default_breakpoint_valid = valid; | |
6c95b8df | 5168 | default_breakpoint_pspace = pspace; |
c906108c SS |
5169 | default_breakpoint_address = addr; |
5170 | default_breakpoint_symtab = symtab; | |
5171 | default_breakpoint_line = line; | |
5172 | } | |
5173 | ||
e4f237da KB |
5174 | /* Return true iff it is meaningful to use the address member of |
5175 | BPT. For some breakpoint types, the address member is irrelevant | |
5176 | and it makes no sense to attempt to compare it to other addresses | |
5177 | (or use it for any other purpose either). | |
5178 | ||
5179 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
5180 | have a zero valued address and we don't want to mark breakpoints of any of |
5181 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
5182 | |
5183 | bp_watchpoint | |
2d134ed3 PA |
5184 | bp_catchpoint |
5185 | ||
5186 | */ | |
e4f237da KB |
5187 | |
5188 | static int | |
5189 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5190 | { | |
5191 | enum bptype type = bpt->type; | |
5192 | ||
2d134ed3 PA |
5193 | return (type != bp_watchpoint && type != bp_catchpoint); |
5194 | } | |
5195 | ||
5196 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5197 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5198 | ||
5199 | static int | |
5200 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5201 | { | |
85d721b8 PA |
5202 | /* Note that this checks the owner's type, not the location's. In |
5203 | case the target does not support read watchpoints, but does | |
5204 | support access watchpoints, we'll have bp_read_watchpoint | |
5205 | watchpoints with hw_access locations. Those should be considered | |
5206 | duplicates of hw_read locations. The hw_read locations will | |
5207 | become hw_access locations later. */ | |
2d134ed3 PA |
5208 | return (loc1->owner->type == loc2->owner->type |
5209 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5210 | && loc1->address == loc2->address | |
5211 | && loc1->length == loc2->length); | |
e4f237da KB |
5212 | } |
5213 | ||
6c95b8df PA |
5214 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5215 | same breakpoint location. In most targets, this can only be true | |
5216 | if ASPACE1 matches ASPACE2. On targets that have global | |
5217 | breakpoints, the address space doesn't really matter. */ | |
5218 | ||
5219 | static int | |
5220 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5221 | struct address_space *aspace2, CORE_ADDR addr2) | |
5222 | { | |
5223 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5224 | || aspace1 == aspace2) | |
5225 | && addr1 == addr2); | |
5226 | } | |
5227 | ||
2d134ed3 PA |
5228 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5229 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5230 | represent the same location. */ | |
5231 | ||
5232 | static int | |
5233 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5234 | { | |
5235 | int hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5236 | int hw_point2 = is_hardware_watchpoint (loc2->owner); | |
5237 | ||
5238 | if (hw_point1 != hw_point2) | |
5239 | return 0; | |
5240 | else if (hw_point1) | |
5241 | return watchpoint_locations_match (loc1, loc2); | |
5242 | else | |
5243 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5244 | loc2->pspace->aspace, loc2->address); | |
5245 | } | |
5246 | ||
76897487 KB |
5247 | static void |
5248 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5249 | int bnum, int have_bnum) | |
5250 | { | |
5251 | char astr1[40]; | |
5252 | char astr2[40]; | |
5253 | ||
bb599908 PH |
5254 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5255 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5256 | if (have_bnum) |
8a3fe4f8 | 5257 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5258 | bnum, astr1, astr2); |
5259 | else | |
8a3fe4f8 | 5260 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5261 | } |
5262 | ||
5263 | /* Adjust a breakpoint's address to account for architectural constraints | |
5264 | on breakpoint placement. Return the adjusted address. Note: Very | |
5265 | few targets require this kind of adjustment. For most targets, | |
5266 | this function is simply the identity function. */ | |
5267 | ||
5268 | static CORE_ADDR | |
a6d9a66e UW |
5269 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5270 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5271 | { |
a6d9a66e | 5272 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5273 | { |
5274 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5275 | return bpaddr; | |
5276 | } | |
88f7da05 KB |
5277 | else if (bptype == bp_watchpoint |
5278 | || bptype == bp_hardware_watchpoint | |
5279 | || bptype == bp_read_watchpoint | |
5280 | || bptype == bp_access_watchpoint | |
fe798b75 | 5281 | || bptype == bp_catchpoint) |
88f7da05 KB |
5282 | { |
5283 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5284 | have their addresses modified. */ | |
5285 | return bpaddr; | |
5286 | } | |
76897487 KB |
5287 | else |
5288 | { | |
5289 | CORE_ADDR adjusted_bpaddr; | |
5290 | ||
5291 | /* Some targets have architectural constraints on the placement | |
5292 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5293 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5294 | |
5295 | /* An adjusted breakpoint address can significantly alter | |
5296 | a user's expectations. Print a warning if an adjustment | |
5297 | is required. */ | |
5298 | if (adjusted_bpaddr != bpaddr) | |
5299 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5300 | ||
5301 | return adjusted_bpaddr; | |
5302 | } | |
5303 | } | |
5304 | ||
7cc221ef DJ |
5305 | /* Allocate a struct bp_location. */ |
5306 | ||
26bb91f3 | 5307 | static struct bp_location * |
39d61571 | 5308 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5309 | { |
afe38095 | 5310 | struct bp_location *loc; |
7cc221ef DJ |
5311 | |
5312 | loc = xmalloc (sizeof (struct bp_location)); | |
5313 | memset (loc, 0, sizeof (*loc)); | |
5314 | ||
e049a4b5 | 5315 | loc->owner = bpt; |
511a6cd4 | 5316 | loc->cond = NULL; |
0d381245 VP |
5317 | loc->shlib_disabled = 0; |
5318 | loc->enabled = 1; | |
e049a4b5 | 5319 | |
39d61571 | 5320 | switch (bpt->type) |
e049a4b5 DJ |
5321 | { |
5322 | case bp_breakpoint: | |
5323 | case bp_until: | |
5324 | case bp_finish: | |
5325 | case bp_longjmp: | |
5326 | case bp_longjmp_resume: | |
5327 | case bp_step_resume: | |
e049a4b5 DJ |
5328 | case bp_watchpoint_scope: |
5329 | case bp_call_dummy: | |
aa7d318d | 5330 | case bp_std_terminate: |
e049a4b5 DJ |
5331 | case bp_shlib_event: |
5332 | case bp_thread_event: | |
5333 | case bp_overlay_event: | |
4efc6507 | 5334 | case bp_jit_event: |
0fd8e87f | 5335 | case bp_longjmp_master: |
aa7d318d | 5336 | case bp_std_terminate_master: |
e049a4b5 DJ |
5337 | loc->loc_type = bp_loc_software_breakpoint; |
5338 | break; | |
5339 | case bp_hardware_breakpoint: | |
5340 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5341 | break; | |
5342 | case bp_hardware_watchpoint: | |
5343 | case bp_read_watchpoint: | |
5344 | case bp_access_watchpoint: | |
5345 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5346 | break; | |
5347 | case bp_watchpoint: | |
ce78b96d | 5348 | case bp_catchpoint: |
15c3d785 PA |
5349 | case bp_tracepoint: |
5350 | case bp_fast_tracepoint: | |
e049a4b5 DJ |
5351 | loc->loc_type = bp_loc_other; |
5352 | break; | |
5353 | default: | |
e2e0b3e5 | 5354 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5355 | } |
5356 | ||
7cc221ef DJ |
5357 | return loc; |
5358 | } | |
5359 | ||
fe3f5fa8 VP |
5360 | static void free_bp_location (struct bp_location *loc) |
5361 | { | |
5362 | if (loc->cond) | |
5363 | xfree (loc->cond); | |
74960c60 VP |
5364 | |
5365 | if (loc->function_name) | |
5366 | xfree (loc->function_name); | |
5367 | ||
fe3f5fa8 VP |
5368 | xfree (loc); |
5369 | } | |
5370 | ||
0d381245 VP |
5371 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
5372 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 5373 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 5374 | |
c40e75cd | 5375 | static struct breakpoint * |
a6d9a66e UW |
5376 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5377 | enum bptype bptype) | |
c906108c | 5378 | { |
52f0bd74 | 5379 | struct breakpoint *b, *b1; |
c906108c SS |
5380 | |
5381 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5382 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5383 | |
4d28f7a8 | 5384 | b->type = bptype; |
a6d9a66e | 5385 | b->gdbarch = gdbarch; |
c906108c SS |
5386 | b->language = current_language->la_language; |
5387 | b->input_radix = input_radix; | |
5388 | b->thread = -1; | |
b5de0fa7 | 5389 | b->enable_state = bp_enabled; |
c906108c SS |
5390 | b->next = 0; |
5391 | b->silent = 0; | |
5392 | b->ignore_count = 0; | |
5393 | b->commands = NULL; | |
818dd999 | 5394 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5395 | b->forked_inferior_pid = null_ptid; |
c906108c | 5396 | b->exec_pathname = NULL; |
a96d9b2e | 5397 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5398 | b->ops = NULL; |
0d381245 | 5399 | b->condition_not_parsed = 0; |
c906108c SS |
5400 | |
5401 | /* Add this breakpoint to the end of the chain | |
5402 | so that a list of breakpoints will come out in order | |
5403 | of increasing numbers. */ | |
5404 | ||
5405 | b1 = breakpoint_chain; | |
5406 | if (b1 == 0) | |
5407 | breakpoint_chain = b; | |
5408 | else | |
5409 | { | |
5410 | while (b1->next) | |
5411 | b1 = b1->next; | |
5412 | b1->next = b; | |
5413 | } | |
0d381245 VP |
5414 | return b; |
5415 | } | |
5416 | ||
5417 | /* Initialize loc->function_name. */ | |
5418 | static void | |
5419 | set_breakpoint_location_function (struct bp_location *loc) | |
5420 | { | |
5421 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 | 5422 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5423 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5424 | { |
5425 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5426 | NULL, NULL); | |
5427 | if (loc->function_name) | |
5428 | loc->function_name = xstrdup (loc->function_name); | |
5429 | } | |
5430 | } | |
5431 | ||
a6d9a66e UW |
5432 | /* Attempt to determine architecture of location identified by SAL. */ |
5433 | static struct gdbarch * | |
5434 | get_sal_arch (struct symtab_and_line sal) | |
5435 | { | |
5436 | if (sal.section) | |
5437 | return get_objfile_arch (sal.section->objfile); | |
5438 | if (sal.symtab) | |
5439 | return get_objfile_arch (sal.symtab->objfile); | |
5440 | ||
5441 | return NULL; | |
5442 | } | |
5443 | ||
0d381245 VP |
5444 | /* set_raw_breakpoint is a low level routine for allocating and |
5445 | partially initializing a breakpoint of type BPTYPE. The newly | |
5446 | created breakpoint's address, section, source file name, and line | |
5447 | number are provided by SAL. The newly created and partially | |
5448 | initialized breakpoint is added to the breakpoint chain and | |
5449 | is also returned as the value of this function. | |
5450 | ||
5451 | It is expected that the caller will complete the initialization of | |
5452 | the newly created breakpoint struct as well as output any status | |
5453 | information regarding the creation of a new breakpoint. In | |
5454 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5455 | number! Care should be taken to not allow an error to occur | |
5456 | prior to completing the initialization of the breakpoint. If this | |
5457 | should happen, a bogus breakpoint will be left on the chain. */ | |
5458 | ||
63c252f8 | 5459 | struct breakpoint * |
a6d9a66e UW |
5460 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5461 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5462 | { |
a6d9a66e | 5463 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5464 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5465 | struct gdbarch *loc_gdbarch; |
5466 | ||
5467 | loc_gdbarch = get_sal_arch (sal); | |
5468 | if (!loc_gdbarch) | |
5469 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5470 | |
6c95b8df PA |
5471 | if (bptype != bp_catchpoint) |
5472 | gdb_assert (sal.pspace != NULL); | |
5473 | ||
0d381245 VP |
5474 | /* Adjust the breakpoint's address prior to allocating a location. |
5475 | Once we call allocate_bp_location(), that mostly uninitialized | |
5476 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5477 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5478 | not want its scan of the location chain to find a breakpoint and |
5479 | location that's only been partially initialized. */ | |
a6d9a66e | 5480 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5481 | |
39d61571 | 5482 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5483 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5484 | b->loc->requested_address = sal.pc; |
5485 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5486 | b->loc->pspace = sal.pspace; |
5487 | ||
5488 | /* Store the program space that was used to set the breakpoint, for | |
5489 | breakpoint resetting. */ | |
5490 | b->pspace = sal.pspace; | |
0d381245 VP |
5491 | |
5492 | if (sal.symtab == NULL) | |
5493 | b->source_file = NULL; | |
5494 | else | |
1b36a34b | 5495 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5496 | b->loc->section = sal.section; |
5497 | b->line_number = sal.line; | |
5498 | ||
5499 | set_breakpoint_location_function (b->loc); | |
c906108c | 5500 | |
c906108c SS |
5501 | breakpoints_changed (); |
5502 | ||
5503 | return b; | |
5504 | } | |
5505 | ||
c2c6d25f JM |
5506 | |
5507 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5508 | instruction, hard-wired into the inferior's code. */ | |
5509 | void | |
5510 | make_breakpoint_permanent (struct breakpoint *b) | |
5511 | { | |
0d381245 | 5512 | struct bp_location *bl; |
b5de0fa7 | 5513 | b->enable_state = bp_permanent; |
c2c6d25f | 5514 | |
0d381245 VP |
5515 | /* By definition, permanent breakpoints are already present in the code. |
5516 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5517 | is called in just one place, so it's hard to say if it's reasonable | |
5518 | to have permanent breakpoint with multiple locations or not, | |
5519 | but it's easy to implmement. */ | |
5520 | for (bl = b->loc; bl; bl = bl->next) | |
5521 | bl->inserted = 1; | |
c2c6d25f JM |
5522 | } |
5523 | ||
53a5351d | 5524 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5525 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5526 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5527 | ||
5528 | void | |
0fd8e87f | 5529 | set_longjmp_breakpoint (int thread) |
c906108c | 5530 | { |
0fd8e87f UW |
5531 | struct breakpoint *b, *temp; |
5532 | ||
5533 | /* To avoid having to rescan all objfile symbols at every step, | |
5534 | we maintain a list of continually-inserted but always disabled | |
5535 | longjmp "master" breakpoints. Here, we simply create momentary | |
5536 | clones of those and enable them for the requested thread. */ | |
5537 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5538 | if (b->pspace == current_program_space |
5539 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5540 | { |
5541 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5542 | clone->type = bp_longjmp; | |
5543 | clone->thread = thread; | |
5544 | } | |
c906108c SS |
5545 | } |
5546 | ||
611c83ae | 5547 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5548 | void |
611c83ae | 5549 | delete_longjmp_breakpoint (int thread) |
c906108c | 5550 | { |
611c83ae | 5551 | struct breakpoint *b, *temp; |
c906108c | 5552 | |
611c83ae PA |
5553 | ALL_BREAKPOINTS_SAFE (b, temp) |
5554 | if (b->type == bp_longjmp) | |
5555 | { | |
5556 | if (b->thread == thread) | |
5557 | delete_breakpoint (b); | |
5558 | } | |
c906108c SS |
5559 | } |
5560 | ||
1900040c MS |
5561 | void |
5562 | enable_overlay_breakpoints (void) | |
5563 | { | |
52f0bd74 | 5564 | struct breakpoint *b; |
1900040c MS |
5565 | |
5566 | ALL_BREAKPOINTS (b) | |
5567 | if (b->type == bp_overlay_event) | |
5568 | { | |
5569 | b->enable_state = bp_enabled; | |
b60e7edf | 5570 | update_global_location_list (1); |
c02f5703 | 5571 | overlay_events_enabled = 1; |
1900040c MS |
5572 | } |
5573 | } | |
5574 | ||
5575 | void | |
5576 | disable_overlay_breakpoints (void) | |
5577 | { | |
52f0bd74 | 5578 | struct breakpoint *b; |
1900040c MS |
5579 | |
5580 | ALL_BREAKPOINTS (b) | |
5581 | if (b->type == bp_overlay_event) | |
5582 | { | |
5583 | b->enable_state = bp_disabled; | |
b60e7edf | 5584 | update_global_location_list (0); |
c02f5703 | 5585 | overlay_events_enabled = 0; |
1900040c MS |
5586 | } |
5587 | } | |
5588 | ||
aa7d318d TT |
5589 | /* Set an active std::terminate breakpoint for each std::terminate |
5590 | master breakpoint. */ | |
5591 | void | |
5592 | set_std_terminate_breakpoint (void) | |
5593 | { | |
5594 | struct breakpoint *b, *temp; | |
5595 | ||
5596 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5597 | if (b->pspace == current_program_space | |
5598 | && b->type == bp_std_terminate_master) | |
5599 | { | |
5600 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5601 | clone->type = bp_std_terminate; | |
5602 | } | |
5603 | } | |
5604 | ||
5605 | /* Delete all the std::terminate breakpoints. */ | |
5606 | void | |
5607 | delete_std_terminate_breakpoint (void) | |
5608 | { | |
5609 | struct breakpoint *b, *temp; | |
5610 | ||
5611 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5612 | if (b->type == bp_std_terminate) | |
5613 | delete_breakpoint (b); | |
5614 | } | |
5615 | ||
c4093a6a | 5616 | struct breakpoint * |
a6d9a66e | 5617 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5618 | { |
5619 | struct breakpoint *b; | |
c4093a6a | 5620 | |
a6d9a66e | 5621 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5622 | |
b5de0fa7 | 5623 | b->enable_state = bp_enabled; |
c4093a6a | 5624 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5625 | b->addr_string |
5626 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5627 | |
b60e7edf | 5628 | update_global_location_list_nothrow (1); |
74960c60 | 5629 | |
c4093a6a JM |
5630 | return b; |
5631 | } | |
5632 | ||
5633 | void | |
5634 | remove_thread_event_breakpoints (void) | |
5635 | { | |
5636 | struct breakpoint *b, *temp; | |
5637 | ||
5638 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5639 | if (b->type == bp_thread_event |
5640 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5641 | delete_breakpoint (b); |
5642 | } | |
5643 | ||
0101ce28 JJ |
5644 | struct captured_parse_breakpoint_args |
5645 | { | |
5646 | char **arg_p; | |
5647 | struct symtabs_and_lines *sals_p; | |
5648 | char ***addr_string_p; | |
5649 | int *not_found_ptr; | |
5650 | }; | |
5651 | ||
5652 | struct lang_and_radix | |
5653 | { | |
5654 | enum language lang; | |
5655 | int radix; | |
5656 | }; | |
5657 | ||
4efc6507 DE |
5658 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5659 | ||
5660 | struct breakpoint * | |
5661 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5662 | { | |
5663 | struct breakpoint *b; | |
5664 | ||
5665 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5666 | update_global_location_list_nothrow (1); | |
5667 | return b; | |
5668 | } | |
0101ce28 | 5669 | |
cae688ec JJ |
5670 | void |
5671 | remove_solib_event_breakpoints (void) | |
5672 | { | |
5673 | struct breakpoint *b, *temp; | |
5674 | ||
5675 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5676 | if (b->type == bp_shlib_event |
5677 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5678 | delete_breakpoint (b); |
5679 | } | |
5680 | ||
5681 | struct breakpoint * | |
a6d9a66e | 5682 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5683 | { |
5684 | struct breakpoint *b; | |
5685 | ||
a6d9a66e | 5686 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5687 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5688 | return b; |
5689 | } | |
5690 | ||
5691 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5692 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5693 | ||
5694 | void | |
cb851954 | 5695 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5696 | { |
876fa593 | 5697 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5698 | |
876fa593 | 5699 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5700 | { |
0d381245 VP |
5701 | struct breakpoint *b = loc->owner; |
5702 | /* We apply the check to all breakpoints, including disabled | |
5703 | for those with loc->duplicate set. This is so that when breakpoint | |
5704 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5705 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5706 | to insert those breakpoints and fail. */ | |
1042e4c0 | 5707 | if (((b->type == bp_breakpoint) |
508ccb1f | 5708 | || (b->type == bp_jit_event) |
1042e4c0 | 5709 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5710 | || (is_tracepoint (b))) |
6c95b8df | 5711 | && loc->pspace == current_program_space |
0d381245 | 5712 | && !loc->shlib_disabled |
a77053c2 | 5713 | #ifdef PC_SOLIB |
0d381245 | 5714 | && PC_SOLIB (loc->address) |
a77053c2 | 5715 | #else |
6c95b8df | 5716 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5717 | #endif |
5718 | ) | |
0d381245 VP |
5719 | { |
5720 | loc->shlib_disabled = 1; | |
5721 | } | |
cae688ec JJ |
5722 | } |
5723 | } | |
5724 | ||
84acb35a JJ |
5725 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5726 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5727 | ||
75149521 | 5728 | static void |
84acb35a JJ |
5729 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5730 | { | |
876fa593 | 5731 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5732 | int disabled_shlib_breaks = 0; |
5733 | ||
c86cf029 VP |
5734 | /* SunOS a.out shared libraries are always mapped, so do not |
5735 | disable breakpoints; they will only be reported as unloaded | |
5736 | through clear_solib when GDB discards its shared library | |
5737 | list. See clear_solib for more information. */ | |
5738 | if (exec_bfd != NULL | |
5739 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5740 | return; | |
5741 | ||
876fa593 | 5742 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5743 | { |
0d381245 VP |
5744 | struct breakpoint *b = loc->owner; |
5745 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
5746 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5747 | && solib->pspace == loc->pspace |
e2dd7057 | 5748 | && !loc->shlib_disabled |
508ccb1f TT |
5749 | && (b->type == bp_breakpoint |
5750 | || b->type == bp_jit_event | |
5751 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5752 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5753 | { |
e2dd7057 PP |
5754 | loc->shlib_disabled = 1; |
5755 | /* At this point, we cannot rely on remove_breakpoint | |
5756 | succeeding so we must mark the breakpoint as not inserted | |
5757 | to prevent future errors occurring in remove_breakpoints. */ | |
5758 | loc->inserted = 0; | |
5759 | if (!disabled_shlib_breaks) | |
5760 | { | |
5761 | target_terminal_ours_for_output (); | |
5762 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5763 | solib->so_name); | |
84acb35a | 5764 | } |
e2dd7057 | 5765 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5766 | } |
5767 | } | |
84acb35a JJ |
5768 | } |
5769 | ||
ce78b96d JB |
5770 | /* FORK & VFORK catchpoints. */ |
5771 | ||
5772 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5773 | ||
c906108c | 5774 | static void |
ce78b96d JB |
5775 | insert_catch_fork (struct breakpoint *b) |
5776 | { | |
5777 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5778 | } | |
5779 | ||
5780 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5781 | ||
5782 | static int | |
5783 | remove_catch_fork (struct breakpoint *b) | |
5784 | { | |
5785 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5786 | } | |
5787 | ||
5788 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5789 | catchpoints. */ | |
5790 | ||
5791 | static int | |
5792 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5793 | { | |
5794 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5795 | } | |
5796 | ||
5797 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5798 | ||
5799 | static enum print_stop_action | |
5800 | print_it_catch_fork (struct breakpoint *b) | |
5801 | { | |
5802 | annotate_catchpoint (b->number); | |
5803 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5804 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5805 | return PRINT_SRC_AND_LOC; | |
5806 | } | |
5807 | ||
5808 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5809 | ||
5810 | static void | |
a6d9a66e | 5811 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5812 | { |
79a45b7d TT |
5813 | struct value_print_options opts; |
5814 | ||
5815 | get_user_print_options (&opts); | |
5816 | ||
ce78b96d JB |
5817 | /* Field 4, the address, is omitted (which makes the columns |
5818 | not line up too nicely with the headers, but the effect | |
5819 | is relatively readable). */ | |
79a45b7d | 5820 | if (opts.addressprint) |
ce78b96d JB |
5821 | ui_out_field_skip (uiout, "addr"); |
5822 | annotate_field (5); | |
5823 | ui_out_text (uiout, "fork"); | |
5824 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5825 | { | |
5826 | ui_out_text (uiout, ", process "); | |
5827 | ui_out_field_int (uiout, "what", | |
5828 | ptid_get_pid (b->forked_inferior_pid)); | |
5829 | ui_out_spaces (uiout, 1); | |
5830 | } | |
5831 | } | |
5832 | ||
5833 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5834 | catchpoints. */ | |
5835 | ||
5836 | static void | |
5837 | print_mention_catch_fork (struct breakpoint *b) | |
5838 | { | |
5839 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5840 | } | |
5841 | ||
6149aea9 PA |
5842 | /* Implement the "print_recreate" breakpoint_ops method for fork |
5843 | catchpoints. */ | |
5844 | ||
5845 | static void | |
5846 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
5847 | { | |
5848 | fprintf_unfiltered (fp, "catch fork"); | |
5849 | } | |
5850 | ||
ce78b96d JB |
5851 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
5852 | ||
5853 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5854 | { | |
5855 | insert_catch_fork, | |
5856 | remove_catch_fork, | |
5857 | breakpoint_hit_catch_fork, | |
5858 | print_it_catch_fork, | |
5859 | print_one_catch_fork, | |
6149aea9 PA |
5860 | print_mention_catch_fork, |
5861 | print_recreate_catch_fork | |
ce78b96d JB |
5862 | }; |
5863 | ||
5864 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5865 | ||
5866 | static void | |
5867 | insert_catch_vfork (struct breakpoint *b) | |
5868 | { | |
5869 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5870 | } | |
5871 | ||
5872 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5873 | ||
5874 | static int | |
5875 | remove_catch_vfork (struct breakpoint *b) | |
5876 | { | |
5877 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5878 | } | |
5879 | ||
5880 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5881 | catchpoints. */ | |
5882 | ||
5883 | static int | |
5884 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5885 | { | |
5886 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5887 | } | |
5888 | ||
5889 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5890 | ||
5891 | static enum print_stop_action | |
5892 | print_it_catch_vfork (struct breakpoint *b) | |
5893 | { | |
5894 | annotate_catchpoint (b->number); | |
5895 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5896 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5897 | return PRINT_SRC_AND_LOC; | |
5898 | } | |
5899 | ||
5900 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5901 | ||
5902 | static void | |
a6d9a66e | 5903 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5904 | { |
79a45b7d TT |
5905 | struct value_print_options opts; |
5906 | ||
5907 | get_user_print_options (&opts); | |
ce78b96d JB |
5908 | /* Field 4, the address, is omitted (which makes the columns |
5909 | not line up too nicely with the headers, but the effect | |
5910 | is relatively readable). */ | |
79a45b7d | 5911 | if (opts.addressprint) |
ce78b96d JB |
5912 | ui_out_field_skip (uiout, "addr"); |
5913 | annotate_field (5); | |
5914 | ui_out_text (uiout, "vfork"); | |
5915 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5916 | { | |
5917 | ui_out_text (uiout, ", process "); | |
5918 | ui_out_field_int (uiout, "what", | |
5919 | ptid_get_pid (b->forked_inferior_pid)); | |
5920 | ui_out_spaces (uiout, 1); | |
5921 | } | |
5922 | } | |
5923 | ||
5924 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
5925 | catchpoints. */ | |
5926 | ||
5927 | static void | |
5928 | print_mention_catch_vfork (struct breakpoint *b) | |
5929 | { | |
5930 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
5931 | } | |
5932 | ||
6149aea9 PA |
5933 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
5934 | catchpoints. */ | |
5935 | ||
5936 | static void | |
5937 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
5938 | { | |
5939 | fprintf_unfiltered (fp, "catch vfork"); | |
5940 | } | |
5941 | ||
ce78b96d JB |
5942 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
5943 | ||
5944 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
5945 | { | |
5946 | insert_catch_vfork, | |
5947 | remove_catch_vfork, | |
5948 | breakpoint_hit_catch_vfork, | |
5949 | print_it_catch_vfork, | |
5950 | print_one_catch_vfork, | |
6149aea9 PA |
5951 | print_mention_catch_vfork, |
5952 | print_recreate_catch_vfork | |
ce78b96d JB |
5953 | }; |
5954 | ||
a96d9b2e SDJ |
5955 | /* Implement the "insert" breakpoint_ops method for syscall |
5956 | catchpoints. */ | |
5957 | ||
5958 | static void | |
5959 | insert_catch_syscall (struct breakpoint *b) | |
5960 | { | |
5961 | struct inferior *inf = current_inferior (); | |
5962 | ||
5963 | ++inf->total_syscalls_count; | |
5964 | if (!b->syscalls_to_be_caught) | |
5965 | ++inf->any_syscall_count; | |
5966 | else | |
5967 | { | |
5968 | int i, iter; | |
5969 | for (i = 0; | |
5970 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5971 | i++) | |
5972 | { | |
5973 | int elem; | |
5974 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5975 | { | |
5976 | int old_size = VEC_length (int, inf->syscalls_counts); | |
5977 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
5978 | uintptr_t vec_addr; | |
5979 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
5980 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
5981 | vec_addr_offset; | |
5982 | memset ((void *) vec_addr, 0, | |
5983 | (iter + 1 - old_size) * sizeof (int)); | |
5984 | } | |
5985 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5986 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
5987 | } | |
5988 | } | |
5989 | ||
5990 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5991 | inf->total_syscalls_count != 0, | |
5992 | inf->any_syscall_count, | |
5993 | VEC_length (int, inf->syscalls_counts), | |
5994 | VEC_address (int, inf->syscalls_counts)); | |
5995 | } | |
5996 | ||
5997 | /* Implement the "remove" breakpoint_ops method for syscall | |
5998 | catchpoints. */ | |
5999 | ||
6000 | static int | |
6001 | remove_catch_syscall (struct breakpoint *b) | |
6002 | { | |
6003 | struct inferior *inf = current_inferior (); | |
6004 | ||
6005 | --inf->total_syscalls_count; | |
6006 | if (!b->syscalls_to_be_caught) | |
6007 | --inf->any_syscall_count; | |
6008 | else | |
6009 | { | |
6010 | int i, iter; | |
6011 | for (i = 0; | |
6012 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6013 | i++) | |
6014 | { | |
6015 | int elem; | |
6016 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6017 | /* Shouldn't happen. */ | |
6018 | continue; | |
6019 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6020 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6021 | } | |
6022 | } | |
6023 | ||
6024 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6025 | inf->total_syscalls_count != 0, | |
6026 | inf->any_syscall_count, | |
6027 | VEC_length (int, inf->syscalls_counts), | |
6028 | VEC_address (int, inf->syscalls_counts)); | |
6029 | } | |
6030 | ||
6031 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6032 | catchpoints. */ | |
6033 | ||
6034 | static int | |
6035 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6036 | { | |
6037 | /* We must check if we are catching specific syscalls in this breakpoint. | |
6038 | If we are, then we must guarantee that the called syscall is the same | |
6039 | syscall we are catching. */ | |
6040 | int syscall_number = 0; | |
6041 | ||
6042 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6043 | return 0; | |
6044 | ||
6045 | /* Now, checking if the syscall is the same. */ | |
6046 | if (b->syscalls_to_be_caught) | |
6047 | { | |
6048 | int i, iter; | |
6049 | for (i = 0; | |
6050 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6051 | i++) | |
6052 | if (syscall_number == iter) | |
6053 | break; | |
6054 | /* Not the same. */ | |
6055 | if (!iter) | |
6056 | return 0; | |
6057 | } | |
6058 | ||
6059 | return 1; | |
6060 | } | |
6061 | ||
6062 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6063 | catchpoints. */ | |
6064 | ||
6065 | static enum print_stop_action | |
6066 | print_it_catch_syscall (struct breakpoint *b) | |
6067 | { | |
6068 | /* These are needed because we want to know in which state a | |
6069 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6070 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6071 | must print "called syscall" or "returned from syscall". */ | |
6072 | ptid_t ptid; | |
6073 | struct target_waitstatus last; | |
6074 | struct syscall s; | |
6075 | struct cleanup *old_chain; | |
6076 | char *syscall_id; | |
6077 | ||
6078 | get_last_target_status (&ptid, &last); | |
6079 | ||
6080 | get_syscall_by_number (last.value.syscall_number, &s); | |
6081 | ||
6082 | annotate_catchpoint (b->number); | |
6083 | ||
6084 | if (s.name == NULL) | |
6085 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6086 | else | |
6087 | syscall_id = xstrprintf ("'%s'", s.name); | |
6088 | ||
6089 | old_chain = make_cleanup (xfree, syscall_id); | |
6090 | ||
6091 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6092 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6093 | b->number, syscall_id); | |
6094 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6095 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6096 | b->number, syscall_id); | |
6097 | ||
6098 | do_cleanups (old_chain); | |
6099 | ||
6100 | return PRINT_SRC_AND_LOC; | |
6101 | } | |
6102 | ||
6103 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6104 | catchpoints. */ | |
6105 | ||
6106 | static void | |
6107 | print_one_catch_syscall (struct breakpoint *b, | |
6108 | struct bp_location **last_loc) | |
6109 | { | |
6110 | struct value_print_options opts; | |
6111 | ||
6112 | get_user_print_options (&opts); | |
6113 | /* Field 4, the address, is omitted (which makes the columns | |
6114 | not line up too nicely with the headers, but the effect | |
6115 | is relatively readable). */ | |
6116 | if (opts.addressprint) | |
6117 | ui_out_field_skip (uiout, "addr"); | |
6118 | annotate_field (5); | |
6119 | ||
6120 | if (b->syscalls_to_be_caught | |
6121 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6122 | ui_out_text (uiout, "syscalls \""); | |
6123 | else | |
6124 | ui_out_text (uiout, "syscall \""); | |
6125 | ||
6126 | if (b->syscalls_to_be_caught) | |
6127 | { | |
6128 | int i, iter; | |
6129 | char *text = xstrprintf ("%s", ""); | |
6130 | for (i = 0; | |
6131 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6132 | i++) | |
6133 | { | |
6134 | char *x = text; | |
6135 | struct syscall s; | |
6136 | get_syscall_by_number (iter, &s); | |
6137 | ||
6138 | if (s.name != NULL) | |
6139 | text = xstrprintf ("%s%s, ", text, s.name); | |
6140 | else | |
6141 | text = xstrprintf ("%s%d, ", text, iter); | |
6142 | ||
6143 | /* We have to xfree the last 'text' (now stored at 'x') | |
6144 | because xstrprintf dinamically allocates new space for it | |
6145 | on every call. */ | |
6146 | xfree (x); | |
6147 | } | |
6148 | /* Remove the last comma. */ | |
6149 | text[strlen (text) - 2] = '\0'; | |
6150 | ui_out_field_string (uiout, "what", text); | |
6151 | } | |
6152 | else | |
6153 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6154 | ui_out_text (uiout, "\" "); | |
6155 | } | |
6156 | ||
6157 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6158 | catchpoints. */ | |
6159 | ||
6160 | static void | |
6161 | print_mention_catch_syscall (struct breakpoint *b) | |
6162 | { | |
6163 | if (b->syscalls_to_be_caught) | |
6164 | { | |
6165 | int i, iter; | |
6166 | ||
6167 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6168 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6169 | else | |
6170 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6171 | ||
6172 | for (i = 0; | |
6173 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6174 | i++) | |
6175 | { | |
6176 | struct syscall s; | |
6177 | get_syscall_by_number (iter, &s); | |
6178 | ||
6179 | if (s.name) | |
6180 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6181 | else | |
6182 | printf_filtered (" %d", s.number); | |
6183 | } | |
6184 | printf_filtered (")"); | |
6185 | } | |
6186 | else | |
6187 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6188 | b->number); | |
6189 | } | |
6190 | ||
6149aea9 PA |
6191 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6192 | catchpoints. */ | |
6193 | ||
6194 | static void | |
6195 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6196 | { | |
6197 | fprintf_unfiltered (fp, "catch syscall"); | |
6198 | ||
6199 | if (b->syscalls_to_be_caught) | |
6200 | { | |
6201 | int i, iter; | |
6202 | ||
6203 | for (i = 0; | |
6204 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6205 | i++) | |
6206 | { | |
6207 | struct syscall s; | |
6208 | ||
6209 | get_syscall_by_number (iter, &s); | |
6210 | if (s.name) | |
6211 | fprintf_unfiltered (fp, " %s", s.name); | |
6212 | else | |
6213 | fprintf_unfiltered (fp, " %d", s.number); | |
6214 | } | |
6215 | } | |
6216 | } | |
6217 | ||
a96d9b2e SDJ |
6218 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6219 | ||
6220 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6221 | { | |
6222 | insert_catch_syscall, | |
6223 | remove_catch_syscall, | |
6224 | breakpoint_hit_catch_syscall, | |
6225 | print_it_catch_syscall, | |
6226 | print_one_catch_syscall, | |
6149aea9 PA |
6227 | print_mention_catch_syscall, |
6228 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6229 | }; |
6230 | ||
6231 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6232 | ||
6233 | static int | |
6234 | syscall_catchpoint_p (struct breakpoint *b) | |
6235 | { | |
6236 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6237 | } | |
6238 | ||
6239 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6240 | but does NOT mention it nor update the global location list. | |
6241 | This is useful if you need to fill more fields in the | |
6242 | struct breakpoint before calling mention. | |
ce78b96d JB |
6243 | |
6244 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6245 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6246 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6247 | to the catchpoint. */ | |
6248 | ||
6249 | static struct breakpoint * | |
a96d9b2e SDJ |
6250 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6251 | char *cond_string, | |
6252 | struct breakpoint_ops *ops) | |
c906108c | 6253 | { |
c5aa993b JM |
6254 | struct symtab_and_line sal; |
6255 | struct breakpoint *b; | |
c5aa993b | 6256 | |
fe39c653 | 6257 | init_sal (&sal); |
6c95b8df | 6258 | sal.pspace = current_program_space; |
c5aa993b | 6259 | |
a6d9a66e | 6260 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6261 | set_breakpoint_count (breakpoint_count + 1); |
6262 | b->number = breakpoint_count; | |
ce78b96d | 6263 | |
1b36a34b | 6264 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6265 | b->thread = -1; |
c906108c | 6266 | b->addr_string = NULL; |
b5de0fa7 EZ |
6267 | b->enable_state = bp_enabled; |
6268 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6269 | b->ops = ops; |
c5aa993b | 6270 | |
a96d9b2e SDJ |
6271 | return b; |
6272 | } | |
6273 | ||
6274 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6275 | ||
6276 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6277 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6278 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6279 | to the catchpoint. */ | |
6280 | ||
6281 | static struct breakpoint * | |
6282 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6283 | char *cond_string, struct breakpoint_ops *ops) | |
6284 | { | |
6285 | struct breakpoint *b = | |
6286 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6287 | ||
c906108c | 6288 | mention (b); |
ce78b96d | 6289 | update_global_location_list (1); |
c906108c | 6290 | |
ce78b96d | 6291 | return b; |
c906108c | 6292 | } |
c5aa993b | 6293 | |
9b70b993 | 6294 | static void |
a6d9a66e UW |
6295 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6296 | int tempflag, char *cond_string, | |
ce78b96d | 6297 | struct breakpoint_ops *ops) |
c906108c | 6298 | { |
a6d9a66e UW |
6299 | struct breakpoint *b |
6300 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6301 | |
6302 | /* FIXME: We should put this information in a breakpoint private data | |
6303 | area. */ | |
6304 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6305 | } |
6306 | ||
fe798b75 JB |
6307 | /* Exec catchpoints. */ |
6308 | ||
9b70b993 | 6309 | static void |
fe798b75 | 6310 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6311 | { |
fe798b75 JB |
6312 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6313 | } | |
c906108c | 6314 | |
fe798b75 JB |
6315 | static int |
6316 | remove_catch_exec (struct breakpoint *b) | |
6317 | { | |
6318 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6319 | } | |
c906108c | 6320 | |
fe798b75 JB |
6321 | static int |
6322 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6323 | { | |
6324 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6325 | } | |
c906108c | 6326 | |
fe798b75 JB |
6327 | static enum print_stop_action |
6328 | print_it_catch_exec (struct breakpoint *b) | |
6329 | { | |
6330 | annotate_catchpoint (b->number); | |
6331 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6332 | b->exec_pathname); | |
6333 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6334 | } |
6335 | ||
fe798b75 | 6336 | static void |
a6d9a66e | 6337 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6338 | { |
6339 | struct value_print_options opts; | |
6340 | ||
6341 | get_user_print_options (&opts); | |
6342 | ||
6343 | /* Field 4, the address, is omitted (which makes the columns | |
6344 | not line up too nicely with the headers, but the effect | |
6345 | is relatively readable). */ | |
6346 | if (opts.addressprint) | |
6347 | ui_out_field_skip (uiout, "addr"); | |
6348 | annotate_field (5); | |
6349 | ui_out_text (uiout, "exec"); | |
6350 | if (b->exec_pathname != NULL) | |
6351 | { | |
6352 | ui_out_text (uiout, ", program \""); | |
6353 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6354 | ui_out_text (uiout, "\" "); | |
6355 | } | |
6356 | } | |
6357 | ||
6358 | static void | |
6359 | print_mention_catch_exec (struct breakpoint *b) | |
6360 | { | |
6361 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6362 | } | |
6363 | ||
6149aea9 PA |
6364 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6365 | catchpoints. */ | |
6366 | ||
6367 | static void | |
6368 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6369 | { | |
6370 | fprintf_unfiltered (fp, "catch exec"); | |
6371 | } | |
6372 | ||
fe798b75 JB |
6373 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6374 | { | |
6375 | insert_catch_exec, | |
6376 | remove_catch_exec, | |
6377 | breakpoint_hit_catch_exec, | |
6378 | print_it_catch_exec, | |
6379 | print_one_catch_exec, | |
6149aea9 PA |
6380 | print_mention_catch_exec, |
6381 | print_recreate_catch_exec | |
fe798b75 JB |
6382 | }; |
6383 | ||
a96d9b2e SDJ |
6384 | static void |
6385 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6386 | struct breakpoint_ops *ops) | |
6387 | { | |
6388 | struct gdbarch *gdbarch = get_current_arch (); | |
6389 | struct breakpoint *b = | |
6390 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6391 | ||
6392 | b->syscalls_to_be_caught = filter; | |
6393 | ||
6394 | /* Now, we have to mention the breakpoint and update the global | |
6395 | location list. */ | |
6396 | mention (b); | |
6397 | update_global_location_list (1); | |
6398 | } | |
6399 | ||
c906108c | 6400 | static int |
fba45db2 | 6401 | hw_breakpoint_used_count (void) |
c906108c | 6402 | { |
52f0bd74 | 6403 | struct breakpoint *b; |
c906108c SS |
6404 | int i = 0; |
6405 | ||
6406 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6407 | { |
d6b74ac4 | 6408 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6409 | i++; |
6410 | } | |
c906108c SS |
6411 | |
6412 | return i; | |
6413 | } | |
6414 | ||
6415 | static int | |
fba45db2 | 6416 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6417 | { |
52f0bd74 | 6418 | struct breakpoint *b; |
c906108c SS |
6419 | int i = 0; |
6420 | ||
6421 | *other_type_used = 0; | |
6422 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6423 | { |
468d015d | 6424 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6425 | { |
6426 | if (b->type == type) | |
6427 | i++; | |
cc60f2e3 | 6428 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6429 | *other_type_used = 1; |
6430 | } | |
6431 | } | |
c906108c SS |
6432 | return i; |
6433 | } | |
6434 | ||
c906108c | 6435 | void |
fba45db2 | 6436 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6437 | { |
c5aa993b | 6438 | struct breakpoint *b; |
c906108c SS |
6439 | |
6440 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6441 | { |
cc60f2e3 | 6442 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6443 | { |
b5de0fa7 | 6444 | b->enable_state = bp_call_disabled; |
b60e7edf | 6445 | update_global_location_list (0); |
c5aa993b JM |
6446 | } |
6447 | } | |
c906108c SS |
6448 | } |
6449 | ||
6450 | void | |
fba45db2 | 6451 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6452 | { |
c5aa993b | 6453 | struct breakpoint *b; |
c906108c SS |
6454 | |
6455 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6456 | { |
cc60f2e3 | 6457 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6458 | { |
b5de0fa7 | 6459 | b->enable_state = bp_enabled; |
b60e7edf | 6460 | update_global_location_list (1); |
c5aa993b JM |
6461 | } |
6462 | } | |
c906108c SS |
6463 | } |
6464 | ||
8bea4e01 UW |
6465 | void |
6466 | disable_breakpoints_before_startup (void) | |
6467 | { | |
6468 | struct breakpoint *b; | |
6469 | int found = 0; | |
6470 | ||
6471 | ALL_BREAKPOINTS (b) | |
6472 | { | |
6c95b8df PA |
6473 | if (b->pspace != current_program_space) |
6474 | continue; | |
6475 | ||
8bea4e01 UW |
6476 | if ((b->type == bp_breakpoint |
6477 | || b->type == bp_hardware_breakpoint) | |
6478 | && breakpoint_enabled (b)) | |
6479 | { | |
6480 | b->enable_state = bp_startup_disabled; | |
6481 | found = 1; | |
6482 | } | |
6483 | } | |
6484 | ||
6485 | if (found) | |
6486 | update_global_location_list (0); | |
6487 | ||
6c95b8df | 6488 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6489 | } |
6490 | ||
6491 | void | |
6492 | enable_breakpoints_after_startup (void) | |
6493 | { | |
6494 | struct breakpoint *b; | |
6495 | int found = 0; | |
6496 | ||
6c95b8df | 6497 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6498 | |
6499 | ALL_BREAKPOINTS (b) | |
6500 | { | |
6c95b8df PA |
6501 | if (b->pspace != current_program_space) |
6502 | continue; | |
6503 | ||
8bea4e01 UW |
6504 | if ((b->type == bp_breakpoint |
6505 | || b->type == bp_hardware_breakpoint) | |
6506 | && b->enable_state == bp_startup_disabled) | |
6507 | { | |
6508 | b->enable_state = bp_enabled; | |
6509 | found = 1; | |
6510 | } | |
6511 | } | |
6512 | ||
6513 | if (found) | |
6514 | breakpoint_re_set (); | |
6515 | } | |
6516 | ||
c906108c SS |
6517 | |
6518 | /* Set a breakpoint that will evaporate an end of command | |
6519 | at address specified by SAL. | |
6520 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6521 | ||
6522 | struct breakpoint * | |
a6d9a66e UW |
6523 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6524 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6525 | { |
52f0bd74 | 6526 | struct breakpoint *b; |
edb3359d DJ |
6527 | |
6528 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6529 | one. */ | |
6530 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6531 | ||
a6d9a66e | 6532 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6533 | b->enable_state = bp_enabled; |
6534 | b->disposition = disp_donttouch; | |
818dd999 | 6535 | b->frame_id = frame_id; |
c906108c SS |
6536 | |
6537 | /* If we're debugging a multi-threaded program, then we | |
6538 | want momentary breakpoints to be active in only a | |
6539 | single thread of control. */ | |
39f77062 KB |
6540 | if (in_thread_list (inferior_ptid)) |
6541 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6542 | |
b60e7edf | 6543 | update_global_location_list_nothrow (1); |
74960c60 | 6544 | |
c906108c SS |
6545 | return b; |
6546 | } | |
611c83ae | 6547 | |
e58b0e63 PA |
6548 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6549 | ORIG is NULL. */ | |
6550 | ||
6551 | struct breakpoint * | |
6552 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6553 | { | |
6554 | struct breakpoint *copy; | |
6555 | ||
6556 | /* If there's nothing to clone, then return nothing. */ | |
6557 | if (orig == NULL) | |
6558 | return NULL; | |
6559 | ||
a6d9a66e | 6560 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6561 | copy->loc = allocate_bp_location (copy); |
6562 | set_breakpoint_location_function (copy->loc); | |
6563 | ||
a6d9a66e | 6564 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6565 | copy->loc->requested_address = orig->loc->requested_address; |
6566 | copy->loc->address = orig->loc->address; | |
6567 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6568 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6569 | |
6570 | if (orig->source_file == NULL) | |
6571 | copy->source_file = NULL; | |
6572 | else | |
6573 | copy->source_file = xstrdup (orig->source_file); | |
6574 | ||
6575 | copy->line_number = orig->line_number; | |
6576 | copy->frame_id = orig->frame_id; | |
6577 | copy->thread = orig->thread; | |
6c95b8df | 6578 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6579 | |
6580 | copy->enable_state = bp_enabled; | |
6581 | copy->disposition = disp_donttouch; | |
6582 | copy->number = internal_breakpoint_number--; | |
6583 | ||
6584 | update_global_location_list_nothrow (0); | |
6585 | return copy; | |
6586 | } | |
6587 | ||
611c83ae | 6588 | struct breakpoint * |
a6d9a66e UW |
6589 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6590 | enum bptype type) | |
611c83ae PA |
6591 | { |
6592 | struct symtab_and_line sal; | |
6593 | ||
6594 | sal = find_pc_line (pc, 0); | |
6595 | sal.pc = pc; | |
6596 | sal.section = find_pc_overlay (pc); | |
6597 | sal.explicit_pc = 1; | |
6598 | ||
a6d9a66e | 6599 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6600 | } |
c906108c | 6601 | \f |
c5aa993b | 6602 | |
c906108c SS |
6603 | /* Tell the user we have just set a breakpoint B. */ |
6604 | ||
6605 | static void | |
fba45db2 | 6606 | mention (struct breakpoint *b) |
c906108c SS |
6607 | { |
6608 | int say_where = 0; | |
fa8a61dc | 6609 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6610 | struct value_print_options opts; |
6611 | ||
6612 | get_user_print_options (&opts); | |
8b93c638 | 6613 | |
9a4105ab AC |
6614 | /* FIXME: This is misplaced; mention() is called by things (like |
6615 | hitting a watchpoint) other than breakpoint creation. It should | |
6616 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6617 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6618 | observer_notify_breakpoint_created (b->number); |
c906108c | 6619 | |
3086aeae DJ |
6620 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6621 | b->ops->print_mention (b); | |
6622 | else | |
6623 | switch (b->type) | |
6624 | { | |
6625 | case bp_none: | |
a3f17187 | 6626 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6627 | break; |
6628 | case bp_watchpoint: | |
6629 | ui_out_text (uiout, "Watchpoint "); | |
6630 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6631 | ui_out_field_int (uiout, "number", b->number); | |
6632 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6633 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6634 | do_cleanups (ui_out_chain); |
6635 | break; | |
6636 | case bp_hardware_watchpoint: | |
6637 | ui_out_text (uiout, "Hardware watchpoint "); | |
6638 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6639 | ui_out_field_int (uiout, "number", b->number); | |
6640 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6641 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6642 | do_cleanups (ui_out_chain); |
6643 | break; | |
6644 | case bp_read_watchpoint: | |
6645 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6646 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6647 | ui_out_field_int (uiout, "number", b->number); | |
6648 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6649 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6650 | do_cleanups (ui_out_chain); |
6651 | break; | |
6652 | case bp_access_watchpoint: | |
6653 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6654 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6655 | ui_out_field_int (uiout, "number", b->number); | |
6656 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6657 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6658 | do_cleanups (ui_out_chain); |
6659 | break; | |
6660 | case bp_breakpoint: | |
6661 | if (ui_out_is_mi_like_p (uiout)) | |
6662 | { | |
6663 | say_where = 0; | |
6664 | break; | |
6665 | } | |
2cec12e5 AR |
6666 | if (b->disposition == disp_del) |
6667 | printf_filtered (_("Temporary breakpoint")); | |
6668 | else | |
6669 | printf_filtered (_("Breakpoint")); | |
6670 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6671 | say_where = 1; |
6672 | break; | |
6673 | case bp_hardware_breakpoint: | |
6674 | if (ui_out_is_mi_like_p (uiout)) | |
6675 | { | |
6676 | say_where = 0; | |
6677 | break; | |
6678 | } | |
a3f17187 | 6679 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6680 | say_where = 1; |
6681 | break; | |
1042e4c0 SS |
6682 | case bp_tracepoint: |
6683 | if (ui_out_is_mi_like_p (uiout)) | |
6684 | { | |
6685 | say_where = 0; | |
6686 | break; | |
6687 | } | |
6688 | printf_filtered (_("Tracepoint")); | |
6689 | printf_filtered (_(" %d"), b->number); | |
6690 | say_where = 1; | |
6691 | break; | |
7a697b8d SS |
6692 | case bp_fast_tracepoint: |
6693 | if (ui_out_is_mi_like_p (uiout)) | |
6694 | { | |
6695 | say_where = 0; | |
6696 | break; | |
6697 | } | |
6698 | printf_filtered (_("Fast tracepoint")); | |
6699 | printf_filtered (_(" %d"), b->number); | |
6700 | say_where = 1; | |
6701 | break; | |
3086aeae DJ |
6702 | |
6703 | case bp_until: | |
6704 | case bp_finish: | |
6705 | case bp_longjmp: | |
6706 | case bp_longjmp_resume: | |
6707 | case bp_step_resume: | |
3086aeae | 6708 | case bp_call_dummy: |
aa7d318d | 6709 | case bp_std_terminate: |
3086aeae DJ |
6710 | case bp_watchpoint_scope: |
6711 | case bp_shlib_event: | |
6712 | case bp_thread_event: | |
6713 | case bp_overlay_event: | |
4efc6507 | 6714 | case bp_jit_event: |
0fd8e87f | 6715 | case bp_longjmp_master: |
aa7d318d | 6716 | case bp_std_terminate_master: |
3086aeae DJ |
6717 | break; |
6718 | } | |
c906108c | 6719 | |
c906108c SS |
6720 | if (say_where) |
6721 | { | |
a3f17187 AC |
6722 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6723 | single string. */ | |
0d381245 | 6724 | if (b->loc == NULL) |
c906108c | 6725 | { |
a3f17187 | 6726 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6727 | } |
6728 | else | |
6729 | { | |
79a45b7d | 6730 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6731 | { |
6732 | printf_filtered (" at "); | |
5af949e3 UW |
6733 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6734 | gdb_stdout); | |
0101ce28 JJ |
6735 | } |
6736 | if (b->source_file) | |
6737 | printf_filtered (": file %s, line %d.", | |
6738 | b->source_file, b->line_number); | |
0d381245 VP |
6739 | |
6740 | if (b->loc->next) | |
6741 | { | |
6742 | struct bp_location *loc = b->loc; | |
6743 | int n = 0; | |
6744 | for (; loc; loc = loc->next) | |
6745 | ++n; | |
6746 | printf_filtered (" (%d locations)", n); | |
6747 | } | |
6748 | ||
c906108c | 6749 | } |
c906108c | 6750 | } |
9dc5e2a9 | 6751 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6752 | return; |
c906108c SS |
6753 | printf_filtered ("\n"); |
6754 | } | |
c906108c | 6755 | \f |
c5aa993b | 6756 | |
0d381245 | 6757 | static struct bp_location * |
39d61571 | 6758 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6759 | const struct symtab_and_line *sal) |
6760 | { | |
6761 | struct bp_location *loc, **tmp; | |
6762 | ||
39d61571 | 6763 | loc = allocate_bp_location (b); |
0d381245 VP |
6764 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6765 | ; | |
6766 | *tmp = loc; | |
a6d9a66e UW |
6767 | loc->gdbarch = get_sal_arch (*sal); |
6768 | if (!loc->gdbarch) | |
6769 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6770 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6771 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6772 | loc->requested_address, b->type); | |
6c95b8df PA |
6773 | loc->pspace = sal->pspace; |
6774 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6775 | loc->section = sal->section; |
6776 | ||
6777 | set_breakpoint_location_function (loc); | |
6778 | return loc; | |
6779 | } | |
514f746b AR |
6780 | \f |
6781 | ||
6782 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6783 | return 0 otherwise. */ | |
6784 | ||
6785 | static int | |
6786 | bp_loc_is_permanent (struct bp_location *loc) | |
6787 | { | |
6788 | int len; | |
6789 | CORE_ADDR addr; | |
6790 | const gdb_byte *brk; | |
6791 | gdb_byte *target_mem; | |
939c61fa JK |
6792 | struct cleanup *cleanup; |
6793 | int retval = 0; | |
514f746b AR |
6794 | |
6795 | gdb_assert (loc != NULL); | |
6796 | ||
6797 | addr = loc->address; | |
a6d9a66e | 6798 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6799 | |
939c61fa JK |
6800 | /* Software breakpoints unsupported? */ |
6801 | if (brk == NULL) | |
6802 | return 0; | |
6803 | ||
514f746b AR |
6804 | target_mem = alloca (len); |
6805 | ||
939c61fa JK |
6806 | /* Enable the automatic memory restoration from breakpoints while |
6807 | we read the memory. Otherwise we could say about our temporary | |
6808 | breakpoints they are permanent. */ | |
6c95b8df PA |
6809 | cleanup = save_current_space_and_thread (); |
6810 | ||
6811 | switch_to_program_space_and_thread (loc->pspace); | |
6812 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6813 | |
514f746b AR |
6814 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6815 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6816 | retval = 1; |
514f746b | 6817 | |
939c61fa JK |
6818 | do_cleanups (cleanup); |
6819 | ||
6820 | return retval; | |
514f746b AR |
6821 | } |
6822 | ||
6823 | ||
c3f6f71d | 6824 | |
018d34a4 VP |
6825 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6826 | as textual description of the location, and COND_STRING | |
db107f19 | 6827 | as condition expression. */ |
018d34a4 VP |
6828 | |
6829 | static void | |
8cdf0e15 VP |
6830 | create_breakpoint_sal (struct gdbarch *gdbarch, |
6831 | struct symtabs_and_lines sals, char *addr_string, | |
6832 | char *cond_string, | |
6833 | enum bptype type, enum bpdisp disposition, | |
6834 | int thread, int task, int ignore_count, | |
6835 | struct breakpoint_ops *ops, int from_tty, int enabled) | |
018d34a4 | 6836 | { |
0d381245 VP |
6837 | struct breakpoint *b = NULL; |
6838 | int i; | |
018d34a4 VP |
6839 | |
6840 | if (type == bp_hardware_breakpoint) | |
6841 | { | |
6842 | int i = hw_breakpoint_used_count (); | |
6843 | int target_resources_ok = | |
d92524f1 | 6844 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6845 | i + 1, 0); |
6846 | if (target_resources_ok == 0) | |
6847 | error (_("No hardware breakpoint support in the target.")); | |
6848 | else if (target_resources_ok < 0) | |
6849 | error (_("Hardware breakpoints used exceeds limit.")); | |
6850 | } | |
6851 | ||
6c95b8df PA |
6852 | gdb_assert (sals.nelts > 0); |
6853 | ||
0d381245 VP |
6854 | for (i = 0; i < sals.nelts; ++i) |
6855 | { | |
6856 | struct symtab_and_line sal = sals.sals[i]; | |
6857 | struct bp_location *loc; | |
6858 | ||
6859 | if (from_tty) | |
5af949e3 UW |
6860 | { |
6861 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6862 | if (!loc_gdbarch) | |
6863 | loc_gdbarch = gdbarch; | |
6864 | ||
6865 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6866 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6867 | } |
0d381245 VP |
6868 | |
6869 | if (i == 0) | |
6870 | { | |
a6d9a66e | 6871 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6872 | set_breakpoint_count (breakpoint_count + 1); |
6873 | b->number = breakpoint_count; | |
6874 | b->thread = thread; | |
4a306c9a | 6875 | b->task = task; |
018d34a4 | 6876 | |
0d381245 VP |
6877 | b->cond_string = cond_string; |
6878 | b->ignore_count = ignore_count; | |
41447f92 | 6879 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6880 | b->disposition = disposition; |
018d34a4 | 6881 | |
6c95b8df PA |
6882 | b->pspace = sals.sals[0].pspace; |
6883 | ||
6884 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6885 | && (b->type == bp_breakpoint |
6886 | || b->type == bp_hardware_breakpoint)) | |
6887 | b->enable_state = bp_startup_disabled; | |
6888 | ||
0d381245 VP |
6889 | loc = b->loc; |
6890 | } | |
6891 | else | |
018d34a4 | 6892 | { |
39d61571 | 6893 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6894 | } |
6895 | ||
514f746b AR |
6896 | if (bp_loc_is_permanent (loc)) |
6897 | make_breakpoint_permanent (b); | |
6898 | ||
0d381245 VP |
6899 | if (b->cond_string) |
6900 | { | |
6901 | char *arg = b->cond_string; | |
d32a6982 | 6902 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6903 | if (*arg) |
db107f19 | 6904 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6905 | } |
0d381245 | 6906 | } |
018d34a4 VP |
6907 | |
6908 | if (addr_string) | |
6909 | b->addr_string = addr_string; | |
6910 | else | |
6911 | /* addr_string has to be used or breakpoint_re_set will delete | |
6912 | me. */ | |
5af949e3 UW |
6913 | b->addr_string |
6914 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 6915 | |
604133b5 | 6916 | b->ops = ops; |
018d34a4 VP |
6917 | mention (b); |
6918 | } | |
6919 | ||
ed0616c6 VP |
6920 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
6921 | elements to fill the void space. */ | |
2c0b251b PA |
6922 | static void |
6923 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
6924 | { |
6925 | int i = index_to_remove+1; | |
6926 | int last_index = sal->nelts-1; | |
6927 | ||
6928 | for (;i <= last_index; ++i) | |
6929 | sal->sals[i-1] = sal->sals[i]; | |
6930 | ||
6931 | --(sal->nelts); | |
6932 | } | |
6933 | ||
6c95b8df PA |
6934 | /* If appropriate, obtains all sals that correspond to the same file |
6935 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
6936 | will want to set a breakpoint at foo.c:line, and not really care | |
6937 | about program spaces. This is done only if SAL does not have | |
6938 | explicit PC and has line and file information. If we got just a | |
6939 | single expanded sal, return the original. | |
ed0616c6 | 6940 | |
6c95b8df PA |
6941 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
6942 | which the name of enclosing function is different from SAL. This | |
6943 | makes sure that if we have breakpoint originally set in template | |
6944 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
6945 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 6946 | |
2c0b251b | 6947 | static struct symtabs_and_lines |
ed0616c6 VP |
6948 | expand_line_sal_maybe (struct symtab_and_line sal) |
6949 | { | |
6950 | struct symtabs_and_lines expanded; | |
6951 | CORE_ADDR original_pc = sal.pc; | |
6952 | char *original_function = NULL; | |
6953 | int found; | |
6954 | int i; | |
6c95b8df | 6955 | struct cleanup *old_chain; |
ed0616c6 VP |
6956 | |
6957 | /* If we have explicit pc, don't expand. | |
6958 | If we have no line number, we can't expand. */ | |
6959 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
6960 | { | |
6961 | expanded.nelts = 1; | |
6962 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6963 | expanded.sals[0] = sal; | |
6964 | return expanded; | |
6965 | } | |
6966 | ||
6967 | sal.pc = 0; | |
6c95b8df PA |
6968 | |
6969 | old_chain = save_current_space_and_thread (); | |
6970 | ||
6971 | switch_to_program_space_and_thread (sal.pspace); | |
6972 | ||
ed0616c6 | 6973 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
6974 | |
6975 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 6976 | expanded = expand_line_sal (sal); |
6c95b8df | 6977 | |
ed0616c6 VP |
6978 | if (expanded.nelts == 1) |
6979 | { | |
3dba1c98 JB |
6980 | /* We had one sal, we got one sal. Return that sal, adjusting it |
6981 | past the function prologue if necessary. */ | |
ed0616c6 VP |
6982 | xfree (expanded.sals); |
6983 | expanded.nelts = 1; | |
6984 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6985 | sal.pc = original_pc; | |
6986 | expanded.sals[0] = sal; | |
3dba1c98 | 6987 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 6988 | do_cleanups (old_chain); |
ed0616c6 VP |
6989 | return expanded; |
6990 | } | |
6991 | ||
6992 | if (!sal.explicit_line) | |
6993 | { | |
6994 | CORE_ADDR func_addr, func_end; | |
6995 | for (i = 0; i < expanded.nelts; ++i) | |
6996 | { | |
6997 | CORE_ADDR pc = expanded.sals[i].pc; | |
6998 | char *this_function; | |
6c95b8df PA |
6999 | |
7000 | /* We need to switch threads as well since we're about to | |
7001 | read memory. */ | |
7002 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7003 | ||
ed0616c6 VP |
7004 | if (find_pc_partial_function (pc, &this_function, |
7005 | &func_addr, &func_end)) | |
7006 | { | |
059fb39f PM |
7007 | if (this_function |
7008 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7009 | { |
7010 | remove_sal (&expanded, i); | |
7011 | --i; | |
7012 | } | |
ed0616c6 VP |
7013 | } |
7014 | } | |
7015 | } | |
059acae7 UW |
7016 | |
7017 | /* Skip the function prologue if necessary. */ | |
7018 | for (i = 0; i < expanded.nelts; ++i) | |
7019 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7020 | |
6c95b8df PA |
7021 | do_cleanups (old_chain); |
7022 | ||
ed0616c6 VP |
7023 | if (expanded.nelts <= 1) |
7024 | { | |
7025 | /* This is un ugly workaround. If we get zero | |
7026 | expanded sals then something is really wrong. | |
7027 | Fix that by returnign the original sal. */ | |
7028 | xfree (expanded.sals); | |
7029 | expanded.nelts = 1; | |
7030 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7031 | sal.pc = original_pc; | |
7032 | expanded.sals[0] = sal; | |
7033 | return expanded; | |
7034 | } | |
7035 | ||
7036 | if (original_pc) | |
7037 | { | |
7038 | found = 0; | |
7039 | for (i = 0; i < expanded.nelts; ++i) | |
7040 | if (expanded.sals[i].pc == original_pc) | |
7041 | { | |
7042 | found = 1; | |
7043 | break; | |
7044 | } | |
7045 | gdb_assert (found); | |
7046 | } | |
7047 | ||
7048 | return expanded; | |
7049 | } | |
7050 | ||
018d34a4 VP |
7051 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7052 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7053 | value. COND_STRING, if not NULL, specified the condition to be | |
7054 | used for all breakpoints. Essentially the only case where | |
7055 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7056 | function. In that case, it's still not possible to specify | |
7057 | separate conditions for different overloaded functions, so | |
7058 | we take just a single condition string. | |
7059 | ||
c3f6f71d | 7060 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7061 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7062 | array contents). If the function fails (error() is called), the |
7063 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
7064 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
7065 | |
7066 | static void | |
8cdf0e15 VP |
7067 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7068 | struct symtabs_and_lines sals, char **addr_string, | |
7069 | char *cond_string, | |
7070 | enum bptype type, enum bpdisp disposition, | |
7071 | int thread, int task, int ignore_count, | |
7072 | struct breakpoint_ops *ops, int from_tty, | |
7073 | int enabled) | |
c906108c | 7074 | { |
018d34a4 VP |
7075 | int i; |
7076 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 7077 | { |
ed0616c6 VP |
7078 | struct symtabs_and_lines expanded = |
7079 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7080 | |
8cdf0e15 VP |
7081 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7082 | cond_string, type, disposition, | |
7083 | thread, task, ignore_count, ops, from_tty, enabled); | |
c3f6f71d | 7084 | } |
c3f6f71d | 7085 | } |
c906108c | 7086 | |
c3f6f71d JM |
7087 | /* Parse ARG which is assumed to be a SAL specification possibly |
7088 | followed by conditionals. On return, SALS contains an array of SAL | |
7089 | addresses found. ADDR_STRING contains a vector of (canonical) | |
7090 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7091 | |
b9362cc7 | 7092 | static void |
c3f6f71d JM |
7093 | parse_breakpoint_sals (char **address, |
7094 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7095 | char ***addr_string, |
7096 | int *not_found_ptr) | |
c3f6f71d JM |
7097 | { |
7098 | char *addr_start = *address; | |
7099 | *addr_string = NULL; | |
7100 | /* If no arg given, or if first arg is 'if ', use the default | |
7101 | breakpoint. */ | |
7102 | if ((*address) == NULL | |
7103 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7104 | { |
7105 | if (default_breakpoint_valid) | |
7106 | { | |
c3f6f71d | 7107 | struct symtab_and_line sal; |
fe39c653 | 7108 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 7109 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7110 | xmalloc (sizeof (struct symtab_and_line)); |
7111 | sal.pc = default_breakpoint_address; | |
7112 | sal.line = default_breakpoint_line; | |
7113 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7114 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7115 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
7116 | |
7117 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
7118 | the default_breakpoint_address. So make sure to set | |
7119 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
7120 | sals to include all other instances with the same symtab and line. | |
7121 | */ | |
7122 | sal.explicit_pc = 1; | |
7123 | ||
c3f6f71d JM |
7124 | sals->sals[0] = sal; |
7125 | sals->nelts = 1; | |
c906108c SS |
7126 | } |
7127 | else | |
8a3fe4f8 | 7128 | error (_("No default breakpoint address now.")); |
c906108c SS |
7129 | } |
7130 | else | |
7131 | { | |
c906108c | 7132 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
7133 | current_source_symtab (which is decode_line_1's default). This |
7134 | should produce the results we want almost all of the time while | |
1aeae86e AF |
7135 | leaving default_breakpoint_* alone. |
7136 | ObjC: However, don't match an Objective-C method name which | |
7137 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7138 | |
c214a6fd | 7139 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7140 | |
c906108c | 7141 | if (default_breakpoint_valid |
0378c332 | 7142 | && (!cursal.symtab |
1aeae86e AF |
7143 | || ((strchr ("+-", (*address)[0]) != NULL) |
7144 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7145 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7146 | default_breakpoint_line, addr_string, |
7147 | not_found_ptr); | |
c906108c | 7148 | else |
0101ce28 JJ |
7149 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7150 | addr_string, not_found_ptr); | |
c906108c | 7151 | } |
c3f6f71d JM |
7152 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7153 | if (sals->nelts > 0 && *addr_string == NULL) | |
7154 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7155 | if (addr_start != (*address)) | |
c906108c | 7156 | { |
c3f6f71d JM |
7157 | int i; |
7158 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 7159 | { |
c3f6f71d JM |
7160 | /* Add the string if not present. */ |
7161 | if ((*addr_string)[i] == NULL) | |
7162 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
7163 | } |
7164 | } | |
c3f6f71d | 7165 | } |
c906108c | 7166 | |
c906108c | 7167 | |
c3f6f71d JM |
7168 | /* Convert each SAL into a real PC. Verify that the PC can be |
7169 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 7170 | |
b9362cc7 | 7171 | static void |
c3f6f71d JM |
7172 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
7173 | char *address) | |
7174 | { | |
7175 | int i; | |
7176 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 7177 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7178 | } |
7179 | ||
7a697b8d SS |
7180 | /* Fast tracepoints may have restrictions on valid locations. For |
7181 | instance, a fast tracepoint using a jump instead of a trap will | |
7182 | likely have to overwrite more bytes than a trap would, and so can | |
7183 | only be placed where the instruction is longer than the jump, or a | |
7184 | multi-instruction sequence does not have a jump into the middle of | |
7185 | it, etc. */ | |
7186 | ||
7187 | static void | |
7188 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7189 | struct symtabs_and_lines *sals) | |
7190 | { | |
7191 | int i, rslt; | |
7192 | struct symtab_and_line *sal; | |
7193 | char *msg; | |
7194 | struct cleanup *old_chain; | |
7195 | ||
7196 | for (i = 0; i < sals->nelts; i++) | |
7197 | { | |
7198 | sal = &sals->sals[i]; | |
7199 | ||
7200 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7201 | NULL, &msg); | |
7202 | old_chain = make_cleanup (xfree, msg); | |
7203 | ||
7204 | if (!rslt) | |
7205 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7206 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7207 | ||
7208 | do_cleanups (old_chain); | |
7209 | } | |
7210 | } | |
7211 | ||
05ff989b | 7212 | static void |
0101ce28 JJ |
7213 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7214 | { | |
7215 | struct captured_parse_breakpoint_args *args = data; | |
7216 | ||
7217 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7218 | args->not_found_ptr); | |
0101ce28 JJ |
7219 | } |
7220 | ||
018d34a4 VP |
7221 | /* Given TOK, a string specification of condition and thread, as |
7222 | accepted by the 'break' command, extract the condition | |
7223 | string and thread number and set *COND_STRING and *THREAD. | |
7224 | PC identifies the context at which the condition should be parsed. | |
7225 | If no condition is found, *COND_STRING is set to NULL. | |
7226 | If no thread is found, *THREAD is set to -1. */ | |
7227 | static void | |
7228 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7229 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7230 | { |
7231 | *cond_string = NULL; | |
7232 | *thread = -1; | |
7233 | while (tok && *tok) | |
7234 | { | |
7235 | char *end_tok; | |
7236 | int toklen; | |
7237 | char *cond_start = NULL; | |
7238 | char *cond_end = NULL; | |
7239 | while (*tok == ' ' || *tok == '\t') | |
7240 | tok++; | |
7241 | ||
7242 | end_tok = tok; | |
7243 | ||
7244 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7245 | end_tok++; | |
7246 | ||
7247 | toklen = end_tok - tok; | |
7248 | ||
7249 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7250 | { | |
f7545552 TT |
7251 | struct expression *expr; |
7252 | ||
018d34a4 | 7253 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7254 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7255 | xfree (expr); | |
018d34a4 VP |
7256 | cond_end = tok; |
7257 | *cond_string = savestring (cond_start, | |
7258 | cond_end - cond_start); | |
7259 | } | |
7260 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7261 | { | |
7262 | char *tmptok; | |
7263 | ||
7264 | tok = end_tok + 1; | |
7265 | tmptok = tok; | |
7266 | *thread = strtol (tok, &tok, 0); | |
7267 | if (tok == tmptok) | |
7268 | error (_("Junk after thread keyword.")); | |
7269 | if (!valid_thread_id (*thread)) | |
7270 | error (_("Unknown thread %d."), *thread); | |
7271 | } | |
4a306c9a JB |
7272 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7273 | { | |
7274 | char *tmptok; | |
7275 | ||
7276 | tok = end_tok + 1; | |
7277 | tmptok = tok; | |
7278 | *task = strtol (tok, &tok, 0); | |
7279 | if (tok == tmptok) | |
7280 | error (_("Junk after task keyword.")); | |
7281 | if (!valid_task_id (*task)) | |
b6199126 | 7282 | error (_("Unknown task %d."), *task); |
4a306c9a | 7283 | } |
018d34a4 VP |
7284 | else |
7285 | error (_("Junk at end of arguments.")); | |
7286 | } | |
7287 | } | |
7288 | ||
fd9b8c24 PA |
7289 | /* Set a breakpoint. This function is shared between CLI and MI |
7290 | functions for setting a breakpoint. This function has two major | |
7291 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7292 | parameter. If non-zero, the function will parse arg, extracting | |
7293 | breakpoint location, address and thread. Otherwise, ARG is just the | |
7294 | location of breakpoint, with condition and thread specified by the | |
7295 | COND_STRING and THREAD parameters. Returns true if any breakpoint | |
7296 | was created; false otherwise. */ | |
0101ce28 | 7297 | |
8cdf0e15 VP |
7298 | int |
7299 | create_breakpoint (struct gdbarch *gdbarch, | |
7300 | char *arg, char *cond_string, int thread, | |
7301 | int parse_condition_and_thread, | |
7302 | int tempflag, int hardwareflag, int traceflag, | |
7303 | int ignore_count, | |
7304 | enum auto_boolean pending_break_support, | |
7305 | struct breakpoint_ops *ops, | |
7306 | int from_tty, | |
7307 | int enabled) | |
c3f6f71d | 7308 | { |
71fff37b | 7309 | struct gdb_exception e; |
c3f6f71d | 7310 | struct symtabs_and_lines sals; |
0101ce28 | 7311 | struct symtab_and_line pending_sal; |
0101ce28 | 7312 | char *copy_arg; |
c3f6f71d JM |
7313 | char *addr_start = arg; |
7314 | char **addr_string; | |
7315 | struct cleanup *old_chain; | |
80c99de1 | 7316 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7317 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7318 | int i; |
0101ce28 | 7319 | int pending = 0; |
0101ce28 | 7320 | int not_found = 0; |
1042e4c0 | 7321 | enum bptype type_wanted; |
4a306c9a | 7322 | int task = 0; |
86b17b60 | 7323 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7324 | |
c3f6f71d JM |
7325 | sals.sals = NULL; |
7326 | sals.nelts = 0; | |
7327 | addr_string = NULL; | |
c3f6f71d | 7328 | |
0101ce28 JJ |
7329 | parse_args.arg_p = &arg; |
7330 | parse_args.sals_p = &sals; | |
7331 | parse_args.addr_string_p = &addr_string; | |
7332 | parse_args.not_found_ptr = ¬_found; | |
7333 | ||
05ff989b AC |
7334 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7335 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7336 | |
7337 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7338 | switch (e.reason) |
0101ce28 | 7339 | { |
05ff989b | 7340 | case RETURN_QUIT: |
98deb0da | 7341 | throw_exception (e); |
05ff989b AC |
7342 | case RETURN_ERROR: |
7343 | switch (e.error) | |
0101ce28 | 7344 | { |
05ff989b | 7345 | case NOT_FOUND_ERROR: |
0101ce28 | 7346 | |
05ff989b AC |
7347 | /* If pending breakpoint support is turned off, throw |
7348 | error. */ | |
fa8d40ab JJ |
7349 | |
7350 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7351 | throw_exception (e); |
7352 | ||
7353 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7354 | |
05ff989b AC |
7355 | /* If pending breakpoint support is auto query and the user |
7356 | selects no, then simply return the error code. */ | |
059fb39f PM |
7357 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
7358 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
fd9b8c24 | 7359 | return 0; |
fa8d40ab | 7360 | |
05ff989b AC |
7361 | /* At this point, either the user was queried about setting |
7362 | a pending breakpoint and selected yes, or pending | |
7363 | breakpoint behavior is on and thus a pending breakpoint | |
7364 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7365 | copy_arg = xstrdup (addr_start); |
7366 | addr_string = ©_arg; | |
7367 | sals.nelts = 1; | |
7368 | sals.sals = &pending_sal; | |
7369 | pending_sal.pc = 0; | |
7370 | pending = 1; | |
05ff989b AC |
7371 | break; |
7372 | default: | |
98deb0da | 7373 | throw_exception (e); |
0101ce28 | 7374 | } |
05ff989b AC |
7375 | default: |
7376 | if (!sals.nelts) | |
fd9b8c24 | 7377 | return 0; |
0101ce28 | 7378 | } |
c3f6f71d JM |
7379 | |
7380 | /* Create a chain of things that always need to be cleaned up. */ | |
7381 | old_chain = make_cleanup (null_cleanup, 0); | |
7382 | ||
0101ce28 JJ |
7383 | if (!pending) |
7384 | { | |
7385 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7386 | make_cleanup (xfree, sals.sals); | |
7387 | ||
7388 | /* Cleanup the addr_string array but not its contents. */ | |
7389 | make_cleanup (xfree, addr_string); | |
7390 | } | |
c3f6f71d | 7391 | |
c3f6f71d JM |
7392 | /* ----------------------------- SNIP ----------------------------- |
7393 | Anything added to the cleanup chain beyond this point is assumed | |
7394 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7395 | then the memory is not reclaimed. */ |
7396 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7397 | |
7398 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7399 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7400 | for (i = 0; i < sals.nelts; i++) |
7401 | { | |
7402 | if (addr_string[i] != NULL) | |
b8c9b27d | 7403 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7404 | } |
7405 | ||
7406 | /* Resolve all line numbers to PC's and verify that the addresses | |
7407 | are ok for the target. */ | |
0101ce28 JJ |
7408 | if (!pending) |
7409 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 7410 | |
1042e4c0 | 7411 | type_wanted = (traceflag |
7a697b8d | 7412 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
7413 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
7414 | ||
7a697b8d SS |
7415 | /* Fast tracepoints may have additional restrictions on location. */ |
7416 | if (type_wanted == bp_fast_tracepoint) | |
7417 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7418 | ||
c3f6f71d JM |
7419 | /* Verify that condition can be parsed, before setting any |
7420 | breakpoints. Allocate a separate condition expression for each | |
7421 | breakpoint. */ | |
0101ce28 | 7422 | if (!pending) |
c3f6f71d | 7423 | { |
2f069f6f | 7424 | if (parse_condition_and_thread) |
72b2ff0e VP |
7425 | { |
7426 | /* Here we only parse 'arg' to separate condition | |
7427 | from thread number, so parsing in context of first | |
7428 | sal is OK. When setting the breakpoint we'll | |
7429 | re-parse it in context of each sal. */ | |
7430 | cond_string = NULL; | |
7431 | thread = -1; | |
4a306c9a JB |
7432 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7433 | &thread, &task); | |
72b2ff0e VP |
7434 | if (cond_string) |
7435 | make_cleanup (xfree, cond_string); | |
7436 | } | |
2f069f6f | 7437 | else |
72b2ff0e VP |
7438 | { |
7439 | /* Create a private copy of condition string. */ | |
7440 | if (cond_string) | |
7441 | { | |
7442 | cond_string = xstrdup (cond_string); | |
7443 | make_cleanup (xfree, cond_string); | |
7444 | } | |
7445 | } | |
8cdf0e15 VP |
7446 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, |
7447 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7448 | thread, task, ignore_count, ops, from_tty, | |
7449 | enabled); | |
c906108c | 7450 | } |
0101ce28 JJ |
7451 | else |
7452 | { | |
0101ce28 JJ |
7453 | struct breakpoint *b; |
7454 | ||
0101ce28 JJ |
7455 | make_cleanup (xfree, copy_arg); |
7456 | ||
a6d9a66e | 7457 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
7458 | set_breakpoint_count (breakpoint_count + 1); |
7459 | b->number = breakpoint_count; | |
72b2ff0e | 7460 | b->thread = -1; |
018d34a4 | 7461 | b->addr_string = addr_string[0]; |
72b2ff0e | 7462 | b->cond_string = NULL; |
0101ce28 | 7463 | b->ignore_count = ignore_count; |
0101ce28 | 7464 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7465 | b->condition_not_parsed = 1; |
604133b5 | 7466 | b->ops = ops; |
41447f92 | 7467 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7468 | b->pspace = current_program_space; |
74960c60 | 7469 | |
6c95b8df | 7470 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7471 | && (b->type == bp_breakpoint |
7472 | || b->type == bp_hardware_breakpoint)) | |
7473 | b->enable_state = bp_startup_disabled; | |
7474 | ||
0101ce28 JJ |
7475 | mention (b); |
7476 | } | |
7477 | ||
c3f6f71d | 7478 | if (sals.nelts > 1) |
95a42b64 TT |
7479 | { |
7480 | warning (_("Multiple breakpoints were set.\n" | |
7481 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7482 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7483 | } |
7484 | ||
80c99de1 PA |
7485 | /* That's it. Discard the cleanups for data inserted into the |
7486 | breakpoint. */ | |
7487 | discard_cleanups (bkpt_chain); | |
7488 | /* But cleanup everything else. */ | |
c3f6f71d | 7489 | do_cleanups (old_chain); |
217dc9e2 | 7490 | |
80c99de1 | 7491 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7492 | update_global_location_list (1); |
fd9b8c24 PA |
7493 | |
7494 | return 1; | |
c3f6f71d | 7495 | } |
c906108c | 7496 | |
72b2ff0e VP |
7497 | /* Set a breakpoint. |
7498 | ARG is a string describing breakpoint address, | |
7499 | condition, and thread. | |
7500 | FLAG specifies if a breakpoint is hardware on, | |
7501 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7502 | and BP_TEMPFLAG. */ | |
7503 | ||
98deb0da | 7504 | static void |
72b2ff0e | 7505 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7506 | { |
72b2ff0e VP |
7507 | int hardwareflag = flag & BP_HARDWAREFLAG; |
7508 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 7509 | |
8cdf0e15 VP |
7510 | create_breakpoint (get_current_arch (), |
7511 | arg, | |
7512 | NULL, 0, 1 /* parse arg */, | |
7513 | tempflag, hardwareflag, 0 /* traceflag */, | |
7514 | 0 /* Ignore count */, | |
7515 | pending_break_support, | |
7516 | NULL /* breakpoint_ops */, | |
7517 | from_tty, | |
7518 | 1 /* enabled */); | |
c906108c SS |
7519 | } |
7520 | ||
72b2ff0e | 7521 | |
c3f6f71d | 7522 | |
c906108c SS |
7523 | /* Helper function for break_command_1 and disassemble_command. */ |
7524 | ||
7525 | void | |
fba45db2 | 7526 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7527 | { |
7528 | CORE_ADDR pc; | |
7529 | ||
7530 | if (sal->pc == 0 && sal->symtab != NULL) | |
7531 | { | |
7532 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7533 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7534 | sal->line, sal->symtab->filename); |
7535 | sal->pc = pc; | |
6a048695 JB |
7536 | |
7537 | /* If this SAL corresponds to a breakpoint inserted using | |
7538 | a line number, then skip the function prologue if necessary. */ | |
7539 | if (sal->explicit_line) | |
059acae7 | 7540 | skip_prologue_sal (sal); |
c906108c SS |
7541 | } |
7542 | ||
7543 | if (sal->section == 0 && sal->symtab != NULL) | |
7544 | { | |
7545 | struct blockvector *bv; | |
c5aa993b JM |
7546 | struct block *b; |
7547 | struct symbol *sym; | |
c906108c | 7548 | |
801e3a5b | 7549 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7550 | if (bv != NULL) |
7551 | { | |
7f0df278 | 7552 | sym = block_linkage_function (b); |
c906108c SS |
7553 | if (sym != NULL) |
7554 | { | |
7555 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7556 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7557 | } |
7558 | else | |
7559 | { | |
7560 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7561 | have to look harder. This case can be executed if we have |
7562 | line numbers but no functions (as can happen in assembly | |
7563 | source). */ | |
c906108c | 7564 | |
c5aa993b | 7565 | struct minimal_symbol *msym; |
6c95b8df PA |
7566 | struct cleanup *old_chain = save_current_space_and_thread (); |
7567 | ||
7568 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7569 | |
7570 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7571 | if (msym) | |
714835d5 | 7572 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7573 | |
7574 | do_cleanups (old_chain); | |
c906108c SS |
7575 | } |
7576 | } | |
7577 | } | |
7578 | } | |
7579 | ||
7580 | void | |
fba45db2 | 7581 | break_command (char *arg, int from_tty) |
c906108c | 7582 | { |
db107f19 | 7583 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7584 | } |
7585 | ||
c906108c | 7586 | void |
fba45db2 | 7587 | tbreak_command (char *arg, int from_tty) |
c906108c | 7588 | { |
db107f19 | 7589 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7590 | } |
7591 | ||
c906108c | 7592 | static void |
fba45db2 | 7593 | hbreak_command (char *arg, int from_tty) |
c906108c | 7594 | { |
db107f19 | 7595 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7596 | } |
7597 | ||
7598 | static void | |
fba45db2 | 7599 | thbreak_command (char *arg, int from_tty) |
c906108c | 7600 | { |
db107f19 | 7601 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7602 | } |
7603 | ||
7604 | static void | |
fba45db2 | 7605 | stop_command (char *arg, int from_tty) |
c906108c | 7606 | { |
a3f17187 | 7607 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7608 | Usage: stop in <function | address>\n\ |
a3f17187 | 7609 | stop at <line>\n")); |
c906108c SS |
7610 | } |
7611 | ||
7612 | static void | |
fba45db2 | 7613 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7614 | { |
7615 | int badInput = 0; | |
7616 | ||
c5aa993b | 7617 | if (arg == (char *) NULL) |
c906108c SS |
7618 | badInput = 1; |
7619 | else if (*arg != '*') | |
7620 | { | |
7621 | char *argptr = arg; | |
7622 | int hasColon = 0; | |
7623 | ||
53a5351d JM |
7624 | /* look for a ':'. If this is a line number specification, then |
7625 | say it is bad, otherwise, it should be an address or | |
7626 | function/method name */ | |
c906108c | 7627 | while (*argptr && !hasColon) |
c5aa993b JM |
7628 | { |
7629 | hasColon = (*argptr == ':'); | |
7630 | argptr++; | |
7631 | } | |
c906108c SS |
7632 | |
7633 | if (hasColon) | |
c5aa993b | 7634 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7635 | else |
c5aa993b | 7636 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7637 | } |
7638 | ||
7639 | if (badInput) | |
a3f17187 | 7640 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7641 | else |
db107f19 | 7642 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7643 | } |
7644 | ||
7645 | static void | |
fba45db2 | 7646 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7647 | { |
7648 | int badInput = 0; | |
7649 | ||
c5aa993b | 7650 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7651 | badInput = 1; |
7652 | else | |
7653 | { | |
7654 | char *argptr = arg; | |
7655 | int hasColon = 0; | |
7656 | ||
7657 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7658 | it is probably a line number. */ |
c906108c | 7659 | while (*argptr && !hasColon) |
c5aa993b JM |
7660 | { |
7661 | hasColon = (*argptr == ':'); | |
7662 | argptr++; | |
7663 | } | |
c906108c SS |
7664 | |
7665 | if (hasColon) | |
c5aa993b | 7666 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7667 | else |
c5aa993b | 7668 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7669 | } |
7670 | ||
7671 | if (badInput) | |
a3f17187 | 7672 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7673 | else |
db107f19 | 7674 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7675 | } |
7676 | ||
53a5351d JM |
7677 | /* accessflag: hw_write: watch write, |
7678 | hw_read: watch read, | |
7679 | hw_access: watch access (read or write) */ | |
c906108c | 7680 | static void |
fba45db2 | 7681 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7682 | { |
d983da9c | 7683 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 7684 | struct expression *exp; |
60e1c644 | 7685 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
c906108c SS |
7686 | struct value *val, *mark; |
7687 | struct frame_info *frame; | |
c906108c SS |
7688 | char *exp_start = NULL; |
7689 | char *exp_end = NULL; | |
37e4754d | 7690 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7691 | int toklen; |
7692 | char *cond_start = NULL; | |
7693 | char *cond_end = NULL; | |
c906108c SS |
7694 | int i, other_type_used, target_resources_ok = 0; |
7695 | enum bptype bp_type; | |
7696 | int mem_cnt = 0; | |
37e4754d | 7697 | int thread = -1; |
c906108c | 7698 | |
37e4754d LM |
7699 | /* Make sure that we actually have parameters to parse. */ |
7700 | if (arg != NULL && arg[0] != '\0') | |
7701 | { | |
7702 | toklen = strlen (arg); /* Size of argument list. */ | |
7703 | ||
7704 | /* Points tok to the end of the argument list. */ | |
7705 | tok = arg + toklen - 1; | |
7706 | ||
7707 | /* Go backwards in the parameters list. Skip the last parameter. | |
7708 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7709 | be the thread identifier. */ | |
7710 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7711 | tok--; | |
7712 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7713 | tok--; | |
7714 | ||
7715 | /* Points end_tok to the beginning of the last token. */ | |
7716 | id_tok_start = tok + 1; | |
7717 | ||
7718 | /* Go backwards in the parameters list. Skip one more parameter. | |
7719 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7720 | reach a "thread" token. */ | |
7721 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7722 | tok--; | |
7723 | ||
7724 | end_tok = tok; | |
7725 | ||
7726 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7727 | tok--; | |
7728 | ||
7729 | /* Move the pointer forward to skip the whitespace and | |
7730 | calculate the length of the token. */ | |
7731 | tok++; | |
7732 | toklen = end_tok - tok; | |
7733 | ||
7734 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7735 | { | |
7736 | /* At this point we've found a "thread" token, which means | |
7737 | the user is trying to set a watchpoint that triggers | |
7738 | only in a specific thread. */ | |
7739 | char *endp; | |
7740 | ||
7741 | /* Extract the thread ID from the next token. */ | |
7742 | thread = strtol (id_tok_start, &endp, 0); | |
7743 | ||
7744 | /* Check if the user provided a valid numeric value for the | |
7745 | thread ID. */ | |
7746 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7747 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7748 | ||
7749 | /* Check if the thread actually exists. */ | |
7750 | if (!valid_thread_id (thread)) | |
7751 | error (_("Unknown thread %d."), thread); | |
7752 | ||
7753 | /* Truncate the string and get rid of the thread <thread_num> | |
7754 | parameter before the parameter list is parsed by the | |
7755 | evaluate_expression() function. */ | |
7756 | *tok = '\0'; | |
7757 | } | |
7758 | } | |
7759 | ||
7760 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7761 | innermost_block = NULL; |
7762 | exp_start = arg; | |
7763 | exp = parse_exp_1 (&arg, 0, 0); | |
7764 | exp_end = arg; | |
fa8a61dc TT |
7765 | /* Remove trailing whitespace from the expression before saving it. |
7766 | This makes the eventual display of the expression string a bit | |
7767 | prettier. */ | |
7768 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7769 | --exp_end; | |
7770 | ||
c906108c SS |
7771 | exp_valid_block = innermost_block; |
7772 | mark = value_mark (); | |
fa4727a6 DJ |
7773 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7774 | if (val != NULL) | |
7775 | release_value (val); | |
c906108c SS |
7776 | |
7777 | tok = arg; | |
7778 | while (*tok == ' ' || *tok == '\t') | |
7779 | tok++; | |
7780 | end_tok = tok; | |
7781 | ||
7782 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7783 | end_tok++; | |
7784 | ||
7785 | toklen = end_tok - tok; | |
7786 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7787 | { | |
2d134ed3 PA |
7788 | struct expression *cond; |
7789 | ||
60e1c644 | 7790 | innermost_block = NULL; |
c906108c SS |
7791 | tok = cond_start = end_tok + 1; |
7792 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
7793 | |
7794 | /* The watchpoint expression may not be local, but the condition | |
7795 | may still be. E.g.: `watch global if local > 0'. */ | |
7796 | cond_exp_valid_block = innermost_block; | |
7797 | ||
2d134ed3 | 7798 | xfree (cond); |
c906108c SS |
7799 | cond_end = tok; |
7800 | } | |
7801 | if (*tok) | |
8a3fe4f8 | 7802 | error (_("Junk at end of command.")); |
c906108c | 7803 | |
53a5351d | 7804 | if (accessflag == hw_read) |
c5aa993b | 7805 | bp_type = bp_read_watchpoint; |
53a5351d | 7806 | else if (accessflag == hw_access) |
c5aa993b JM |
7807 | bp_type = bp_access_watchpoint; |
7808 | else | |
7809 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
7810 | |
7811 | mem_cnt = can_use_hardware_watchpoint (val); | |
7812 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 7813 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
7814 | if (mem_cnt != 0) |
7815 | { | |
7816 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 7817 | target_resources_ok = |
d92524f1 | 7818 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 7819 | other_type_used); |
c5aa993b | 7820 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7821 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 7822 | |
c5aa993b | 7823 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7824 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 7825 | } |
c906108c | 7826 | |
4d28f7a8 KB |
7827 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
7828 | watchpoint could not be set. */ | |
7829 | if (!mem_cnt || target_resources_ok <= 0) | |
7830 | bp_type = bp_watchpoint; | |
7831 | ||
d983da9c | 7832 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
7833 | |
7834 | /* If the expression is "local", then set up a "watchpoint scope" | |
7835 | breakpoint at the point where we've left the scope of the watchpoint | |
7836 | expression. Create the scope breakpoint before the watchpoint, so | |
7837 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 7838 | if (exp_valid_block && frame) |
d983da9c | 7839 | { |
edb3359d DJ |
7840 | if (frame_id_p (frame_unwind_caller_id (frame))) |
7841 | { | |
7842 | scope_breakpoint | |
a6d9a66e UW |
7843 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
7844 | frame_unwind_caller_pc (frame), | |
edb3359d | 7845 | bp_watchpoint_scope); |
d983da9c | 7846 | |
edb3359d | 7847 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 7848 | |
edb3359d DJ |
7849 | /* Automatically delete the breakpoint when it hits. */ |
7850 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 7851 | |
edb3359d DJ |
7852 | /* Only break in the proper frame (help with recursion). */ |
7853 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 7854 | |
edb3359d | 7855 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
7856 | scope_breakpoint->loc->gdbarch |
7857 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
7858 | scope_breakpoint->loc->requested_address |
7859 | = frame_unwind_caller_pc (frame); | |
7860 | scope_breakpoint->loc->address | |
a6d9a66e UW |
7861 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
7862 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
7863 | scope_breakpoint->type); |
7864 | } | |
d983da9c DJ |
7865 | } |
7866 | ||
c906108c | 7867 | /* Now set up the breakpoint. */ |
2d134ed3 | 7868 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
7869 | set_breakpoint_count (breakpoint_count + 1); |
7870 | b->number = breakpoint_count; | |
37e4754d | 7871 | b->thread = thread; |
b5de0fa7 | 7872 | b->disposition = disp_donttouch; |
c906108c SS |
7873 | b->exp = exp; |
7874 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 7875 | b->cond_exp_valid_block = cond_exp_valid_block; |
c906108c SS |
7876 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
7877 | b->val = val; | |
fa4727a6 | 7878 | b->val_valid = 1; |
c906108c SS |
7879 | if (cond_start) |
7880 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
7881 | else | |
7882 | b->cond_string = 0; | |
c5aa993b | 7883 | |
c906108c | 7884 | if (frame) |
f6bc2008 PA |
7885 | { |
7886 | b->watchpoint_frame = get_frame_id (frame); | |
7887 | b->watchpoint_thread = inferior_ptid; | |
7888 | } | |
c906108c | 7889 | else |
f6bc2008 PA |
7890 | { |
7891 | b->watchpoint_frame = null_frame_id; | |
7892 | b->watchpoint_thread = null_ptid; | |
7893 | } | |
c906108c | 7894 | |
d983da9c | 7895 | if (scope_breakpoint != NULL) |
c906108c | 7896 | { |
d983da9c DJ |
7897 | /* The scope breakpoint is related to the watchpoint. We will |
7898 | need to act on them together. */ | |
7899 | b->related_breakpoint = scope_breakpoint; | |
7900 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 7901 | } |
d983da9c | 7902 | |
c906108c | 7903 | value_free_to_mark (mark); |
2d134ed3 PA |
7904 | |
7905 | /* Finally update the new watchpoint. This creates the locations | |
7906 | that should be inserted. */ | |
7907 | update_watchpoint (b, 1); | |
7908 | ||
c906108c | 7909 | mention (b); |
b60e7edf | 7910 | update_global_location_list (1); |
c906108c SS |
7911 | } |
7912 | ||
7913 | /* Return count of locations need to be watched and can be handled | |
7914 | in hardware. If the watchpoint can not be handled | |
7915 | in hardware return zero. */ | |
7916 | ||
c906108c | 7917 | static int |
fba45db2 | 7918 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
7919 | { |
7920 | int found_memory_cnt = 0; | |
2e70b7b9 | 7921 | struct value *head = v; |
c906108c SS |
7922 | |
7923 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 7924 | if (!can_use_hw_watchpoints) |
c906108c | 7925 | return 0; |
c5aa993b | 7926 | |
5c44784c JM |
7927 | /* Make sure that the value of the expression depends only upon |
7928 | memory contents, and values computed from them within GDB. If we | |
7929 | find any register references or function calls, we can't use a | |
7930 | hardware watchpoint. | |
7931 | ||
7932 | The idea here is that evaluating an expression generates a series | |
7933 | of values, one holding the value of every subexpression. (The | |
7934 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
7935 | a*b+c.) GDB's values hold almost enough information to establish | |
7936 | the criteria given above --- they identify memory lvalues, | |
7937 | register lvalues, computed values, etcetera. So we can evaluate | |
7938 | the expression, and then scan the chain of values that leaves | |
7939 | behind to decide whether we can detect any possible change to the | |
7940 | expression's final value using only hardware watchpoints. | |
7941 | ||
7942 | However, I don't think that the values returned by inferior | |
7943 | function calls are special in any way. So this function may not | |
7944 | notice that an expression involving an inferior function call | |
7945 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 7946 | for (; v; v = value_next (v)) |
c906108c | 7947 | { |
5c44784c | 7948 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 7949 | { |
d69fe07e | 7950 | if (value_lazy (v)) |
5c44784c JM |
7951 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
7952 | we either just used its address (e.g., `a' in `a.b') or | |
7953 | we never needed it at all (e.g., `a' in `a,b'). */ | |
7954 | ; | |
53a5351d | 7955 | else |
5c44784c JM |
7956 | { |
7957 | /* Ahh, memory we actually used! Check if we can cover | |
7958 | it with hardware watchpoints. */ | |
df407dfe | 7959 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
7960 | |
7961 | /* We only watch structs and arrays if user asked for it | |
7962 | explicitly, never if they just happen to appear in a | |
7963 | middle of some value chain. */ | |
7964 | if (v == head | |
7965 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
7966 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
7967 | { | |
42ae5230 | 7968 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 7969 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 7970 | |
d92524f1 | 7971 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
7972 | return 0; |
7973 | else | |
7974 | found_memory_cnt++; | |
7975 | } | |
5c44784c | 7976 | } |
c5aa993b | 7977 | } |
5086187c AC |
7978 | else if (VALUE_LVAL (v) != not_lval |
7979 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 7980 | return 0; /* ??? What does this represent? */ |
5086187c | 7981 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 7982 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
7983 | } |
7984 | ||
7985 | /* The expression itself looks suitable for using a hardware | |
7986 | watchpoint, but give the target machine a chance to reject it. */ | |
7987 | return found_memory_cnt; | |
7988 | } | |
7989 | ||
8b93c638 | 7990 | void |
fba45db2 | 7991 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7992 | { |
7993 | watch_command (arg, from_tty); | |
7994 | } | |
8926118c | 7995 | |
c5aa993b | 7996 | static void |
fba45db2 | 7997 | watch_command (char *arg, int from_tty) |
c906108c | 7998 | { |
53a5351d | 7999 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
8000 | } |
8001 | ||
8b93c638 | 8002 | void |
fba45db2 | 8003 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8004 | { |
8005 | rwatch_command (arg, from_tty); | |
8006 | } | |
8926118c | 8007 | |
c5aa993b | 8008 | static void |
fba45db2 | 8009 | rwatch_command (char *arg, int from_tty) |
c906108c | 8010 | { |
53a5351d | 8011 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
8012 | } |
8013 | ||
8b93c638 | 8014 | void |
fba45db2 | 8015 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
8016 | { |
8017 | awatch_command (arg, from_tty); | |
8018 | } | |
8926118c | 8019 | |
c5aa993b | 8020 | static void |
fba45db2 | 8021 | awatch_command (char *arg, int from_tty) |
c906108c | 8022 | { |
53a5351d | 8023 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 8024 | } |
c906108c | 8025 | \f |
c5aa993b | 8026 | |
43ff13b4 | 8027 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8028 | because it uses the mechanisms of breakpoints. */ |
8029 | ||
bfec99b2 PA |
8030 | struct until_break_command_continuation_args |
8031 | { | |
8032 | struct breakpoint *breakpoint; | |
8033 | struct breakpoint *breakpoint2; | |
8034 | }; | |
8035 | ||
43ff13b4 JM |
8036 | /* This function is called by fetch_inferior_event via the |
8037 | cmd_continuation pointer, to complete the until command. It takes | |
8038 | care of cleaning up the temporary breakpoints set up by the until | |
8039 | command. */ | |
c2c6d25f | 8040 | static void |
604ead4a | 8041 | until_break_command_continuation (void *arg) |
43ff13b4 | 8042 | { |
bfec99b2 PA |
8043 | struct until_break_command_continuation_args *a = arg; |
8044 | ||
8045 | delete_breakpoint (a->breakpoint); | |
8046 | if (a->breakpoint2) | |
8047 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
8048 | } |
8049 | ||
c906108c | 8050 | void |
ae66c1fc | 8051 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8052 | { |
8053 | struct symtabs_and_lines sals; | |
8054 | struct symtab_and_line sal; | |
206415a3 | 8055 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8056 | struct breakpoint *breakpoint; |
f107f563 | 8057 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
8058 | struct cleanup *old_chain; |
8059 | ||
8060 | clear_proceed_status (); | |
8061 | ||
8062 | /* Set a breakpoint where the user wants it and at return from | |
8063 | this function */ | |
c5aa993b | 8064 | |
c906108c SS |
8065 | if (default_breakpoint_valid) |
8066 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8067 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8068 | else |
53a5351d | 8069 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8070 | 0, (char ***) NULL, NULL); |
c5aa993b | 8071 | |
c906108c | 8072 | if (sals.nelts != 1) |
8a3fe4f8 | 8073 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8074 | |
c906108c | 8075 | sal = sals.sals[0]; |
b8c9b27d | 8076 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 8077 | |
c906108c | 8078 | if (*arg) |
8a3fe4f8 | 8079 | error (_("Junk at end of arguments.")); |
c5aa993b | 8080 | |
c906108c | 8081 | resolve_sal_pc (&sal); |
c5aa993b | 8082 | |
ae66c1fc EZ |
8083 | if (anywhere) |
8084 | /* If the user told us to continue until a specified location, | |
8085 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8086 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8087 | null_frame_id, bp_until); | |
ae66c1fc | 8088 | else |
edb3359d | 8089 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 8090 | at the very same frame. */ |
a6d9a66e UW |
8091 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8092 | get_stack_frame_id (frame), | |
ae66c1fc | 8093 | bp_until); |
c5aa993b | 8094 | |
f107f563 | 8095 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8096 | |
ae66c1fc EZ |
8097 | /* Keep within the current frame, or in frames called by the current |
8098 | one. */ | |
edb3359d DJ |
8099 | |
8100 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8101 | { |
edb3359d DJ |
8102 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8103 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8104 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8105 | sal, | |
edb3359d | 8106 | frame_unwind_caller_id (frame), |
f107f563 VP |
8107 | bp_until); |
8108 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 8109 | } |
c5aa993b | 8110 | |
c906108c | 8111 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
8112 | |
8113 | /* If we are running asynchronously, and proceed call above has actually | |
8114 | managed to start the target, arrange for breakpoints to be | |
8115 | deleted when the target stops. Otherwise, we're already stopped and | |
8116 | delete breakpoints via cleanup chain. */ | |
8117 | ||
8ea051c5 | 8118 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8119 | { |
bfec99b2 PA |
8120 | struct until_break_command_continuation_args *args; |
8121 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8122 | |
bfec99b2 PA |
8123 | args->breakpoint = breakpoint; |
8124 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
8125 | |
8126 | discard_cleanups (old_chain); | |
95e54da7 PA |
8127 | add_continuation (inferior_thread (), |
8128 | until_break_command_continuation, args, | |
604ead4a | 8129 | xfree); |
f107f563 VP |
8130 | } |
8131 | else | |
c5aa993b | 8132 | do_cleanups (old_chain); |
c906108c | 8133 | } |
ae66c1fc | 8134 | |
c906108c | 8135 | static void |
fba45db2 | 8136 | ep_skip_leading_whitespace (char **s) |
c906108c | 8137 | { |
c5aa993b JM |
8138 | if ((s == NULL) || (*s == NULL)) |
8139 | return; | |
8140 | while (isspace (**s)) | |
8141 | *s += 1; | |
c906108c | 8142 | } |
c5aa993b | 8143 | |
c906108c SS |
8144 | /* This function attempts to parse an optional "if <cond>" clause |
8145 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8146 | |
c906108c SS |
8147 | Else, it returns a pointer to the condition string. (It does not |
8148 | attempt to evaluate the string against a particular block.) And, | |
8149 | it updates arg to point to the first character following the parsed | |
8150 | if clause in the arg string. */ | |
53a5351d | 8151 | |
c906108c | 8152 | static char * |
fba45db2 | 8153 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8154 | { |
c5aa993b JM |
8155 | char *cond_string; |
8156 | ||
8157 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8158 | return NULL; |
c5aa993b | 8159 | |
c906108c SS |
8160 | /* Skip the "if" keyword. */ |
8161 | (*arg) += 2; | |
c5aa993b | 8162 | |
c906108c SS |
8163 | /* Skip any extra leading whitespace, and record the start of the |
8164 | condition string. */ | |
8165 | ep_skip_leading_whitespace (arg); | |
8166 | cond_string = *arg; | |
c5aa993b | 8167 | |
c906108c SS |
8168 | /* Assume that the condition occupies the remainder of the arg string. */ |
8169 | (*arg) += strlen (cond_string); | |
c5aa993b | 8170 | |
c906108c SS |
8171 | return cond_string; |
8172 | } | |
c5aa993b | 8173 | |
c906108c SS |
8174 | /* Commands to deal with catching events, such as signals, exceptions, |
8175 | process start/exit, etc. */ | |
c5aa993b JM |
8176 | |
8177 | typedef enum | |
8178 | { | |
44feb3ce TT |
8179 | catch_fork_temporary, catch_vfork_temporary, |
8180 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8181 | } |
8182 | catch_fork_kind; | |
8183 | ||
c906108c | 8184 | static void |
44feb3ce | 8185 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 8186 | { |
a6d9a66e | 8187 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8188 | char *cond_string = NULL; |
44feb3ce TT |
8189 | catch_fork_kind fork_kind; |
8190 | int tempflag; | |
8191 | ||
8192 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8193 | tempflag = (fork_kind == catch_fork_temporary | |
8194 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8195 | |
44feb3ce TT |
8196 | if (!arg) |
8197 | arg = ""; | |
c906108c | 8198 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8199 | |
c906108c | 8200 | /* The allowed syntax is: |
c5aa993b JM |
8201 | catch [v]fork |
8202 | catch [v]fork if <cond> | |
8203 | ||
c906108c SS |
8204 | First, check if there's an if clause. */ |
8205 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 8206 | |
c906108c | 8207 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8208 | error (_("Junk at end of arguments.")); |
c5aa993b | 8209 | |
c906108c SS |
8210 | /* If this target supports it, create a fork or vfork catchpoint |
8211 | and enable reporting of such events. */ | |
c5aa993b JM |
8212 | switch (fork_kind) |
8213 | { | |
44feb3ce TT |
8214 | case catch_fork_temporary: |
8215 | case catch_fork_permanent: | |
a6d9a66e | 8216 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8217 | &catch_fork_breakpoint_ops); |
c906108c | 8218 | break; |
44feb3ce TT |
8219 | case catch_vfork_temporary: |
8220 | case catch_vfork_permanent: | |
a6d9a66e | 8221 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8222 | &catch_vfork_breakpoint_ops); |
c906108c | 8223 | break; |
c5aa993b | 8224 | default: |
8a3fe4f8 | 8225 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8226 | break; |
c5aa993b | 8227 | } |
c906108c SS |
8228 | } |
8229 | ||
8230 | static void | |
44feb3ce | 8231 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 8232 | { |
a6d9a66e | 8233 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8234 | int tempflag; |
c5aa993b | 8235 | char *cond_string = NULL; |
c906108c | 8236 | |
44feb3ce TT |
8237 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8238 | ||
8239 | if (!arg) | |
8240 | arg = ""; | |
c906108c SS |
8241 | ep_skip_leading_whitespace (&arg); |
8242 | ||
8243 | /* The allowed syntax is: | |
c5aa993b JM |
8244 | catch exec |
8245 | catch exec if <cond> | |
c906108c SS |
8246 | |
8247 | First, check if there's an if clause. */ | |
8248 | cond_string = ep_parse_optional_if_clause (&arg); | |
8249 | ||
8250 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8251 | error (_("Junk at end of arguments.")); |
c906108c SS |
8252 | |
8253 | /* If this target supports it, create an exec catchpoint | |
8254 | and enable reporting of such events. */ | |
a6d9a66e UW |
8255 | create_catchpoint (gdbarch, tempflag, cond_string, |
8256 | &catch_exec_breakpoint_ops); | |
c906108c | 8257 | } |
c5aa993b | 8258 | |
3086aeae DJ |
8259 | static enum print_stop_action |
8260 | print_exception_catchpoint (struct breakpoint *b) | |
8261 | { | |
ade92717 | 8262 | int bp_temp, bp_throw; |
3086aeae | 8263 | |
ade92717 | 8264 | annotate_catchpoint (b->number); |
3086aeae | 8265 | |
ade92717 AR |
8266 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8267 | if (b->loc->address != b->loc->requested_address) | |
8268 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8269 | b->loc->address, | |
8270 | b->number, 1); | |
df2b6d2d | 8271 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8272 | ui_out_text (uiout, |
8273 | bp_temp ? "Temporary catchpoint " | |
8274 | : "Catchpoint "); | |
8275 | if (!ui_out_is_mi_like_p (uiout)) | |
8276 | ui_out_field_int (uiout, "bkptno", b->number); | |
8277 | ui_out_text (uiout, | |
c0b37c48 AR |
8278 | bp_throw ? " (exception thrown), " |
8279 | : " (exception caught), "); | |
ade92717 AR |
8280 | if (ui_out_is_mi_like_p (uiout)) |
8281 | { | |
8282 | ui_out_field_string (uiout, "reason", | |
8283 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8284 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8285 | ui_out_field_int (uiout, "bkptno", b->number); | |
8286 | } | |
3086aeae DJ |
8287 | return PRINT_SRC_AND_LOC; |
8288 | } | |
8289 | ||
8290 | static void | |
a6d9a66e | 8291 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 8292 | { |
79a45b7d TT |
8293 | struct value_print_options opts; |
8294 | get_user_print_options (&opts); | |
8295 | if (opts.addressprint) | |
3086aeae DJ |
8296 | { |
8297 | annotate_field (4); | |
604133b5 AR |
8298 | if (b->loc == NULL || b->loc->shlib_disabled) |
8299 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8300 | else | |
5af949e3 UW |
8301 | ui_out_field_core_addr (uiout, "addr", |
8302 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8303 | } |
8304 | annotate_field (5); | |
604133b5 | 8305 | if (b->loc) |
a6d9a66e | 8306 | *last_loc = b->loc; |
3086aeae DJ |
8307 | if (strstr (b->addr_string, "throw") != NULL) |
8308 | ui_out_field_string (uiout, "what", "exception throw"); | |
8309 | else | |
8310 | ui_out_field_string (uiout, "what", "exception catch"); | |
8311 | } | |
8312 | ||
8313 | static void | |
8314 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8315 | { | |
ade92717 AR |
8316 | int bp_temp; |
8317 | int bp_throw; | |
8318 | ||
df2b6d2d | 8319 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8320 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8321 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8322 | : _("Catchpoint ")); | |
8323 | ui_out_field_int (uiout, "bkptno", b->number); | |
8324 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8325 | : _(" (catch)")); | |
3086aeae DJ |
8326 | } |
8327 | ||
6149aea9 PA |
8328 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8329 | catch catchpoints. */ | |
8330 | ||
8331 | static void | |
8332 | print_recreate_exception_catchpoint (struct breakpoint *b, struct ui_file *fp) | |
8333 | { | |
8334 | int bp_temp; | |
8335 | int bp_throw; | |
8336 | ||
8337 | bp_temp = b->disposition == disp_del; | |
8338 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8339 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8340 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8341 | } | |
8342 | ||
3086aeae | 8343 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8344 | NULL, /* insert */ |
8345 | NULL, /* remove */ | |
8346 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8347 | print_exception_catchpoint, |
8348 | print_one_exception_catchpoint, | |
6149aea9 PA |
8349 | print_mention_exception_catchpoint, |
8350 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8351 | }; |
8352 | ||
8353 | static int | |
8354 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8355 | enum exception_event_kind ex_event, int from_tty) | |
8356 | { | |
604133b5 AR |
8357 | char *trigger_func_name; |
8358 | ||
3086aeae | 8359 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8360 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8361 | else |
604133b5 | 8362 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8363 | |
8cdf0e15 VP |
8364 | create_breakpoint (get_current_arch (), |
8365 | trigger_func_name, cond_string, -1, | |
8366 | 0 /* condition and thread are valid. */, | |
8367 | tempflag, 0, 0, | |
8368 | 0, | |
8369 | AUTO_BOOLEAN_TRUE /* pending */, | |
8370 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
8371 | 1 /* enabled */); | |
3086aeae | 8372 | |
3086aeae DJ |
8373 | return 1; |
8374 | } | |
8375 | ||
c5aa993b | 8376 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
8377 | |
8378 | static void | |
fba45db2 KB |
8379 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8380 | int tempflag, int from_tty) | |
c906108c | 8381 | { |
c5aa993b | 8382 | char *cond_string = NULL; |
c5aa993b | 8383 | |
44feb3ce TT |
8384 | if (!arg) |
8385 | arg = ""; | |
c906108c | 8386 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8387 | |
c906108c SS |
8388 | cond_string = ep_parse_optional_if_clause (&arg); |
8389 | ||
8390 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8391 | error (_("Junk at end of arguments.")); |
c906108c | 8392 | |
059fb39f PM |
8393 | if (ex_event != EX_EVENT_THROW |
8394 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 8395 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 8396 | |
3086aeae DJ |
8397 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
8398 | return; | |
8399 | ||
8a3fe4f8 | 8400 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
8401 | } |
8402 | ||
44feb3ce TT |
8403 | /* Implementation of "catch catch" command. */ |
8404 | ||
8405 | static void | |
8406 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8407 | { | |
8408 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8409 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
8410 | } | |
8411 | ||
8412 | /* Implementation of "catch throw" command. */ | |
8413 | ||
8414 | static void | |
8415 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8416 | { | |
8417 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8418 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
8419 | } | |
8420 | ||
f7f9143b JB |
8421 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8422 | ||
8423 | static void | |
a6d9a66e UW |
8424 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8425 | struct symtab_and_line sal, | |
f7f9143b JB |
8426 | char *addr_string, |
8427 | char *exp_string, | |
8428 | char *cond_string, | |
8429 | struct expression *cond, | |
8430 | struct breakpoint_ops *ops, | |
8431 | int tempflag, | |
8432 | int from_tty) | |
8433 | { | |
8434 | struct breakpoint *b; | |
8435 | ||
8436 | if (from_tty) | |
8437 | { | |
5af949e3 UW |
8438 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8439 | if (!loc_gdbarch) | |
8440 | loc_gdbarch = gdbarch; | |
8441 | ||
6c95b8df PA |
8442 | describe_other_breakpoints (loc_gdbarch, |
8443 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8444 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8445 | version for exception catchpoints, because two catchpoints | |
8446 | used for different exception names will use the same address. | |
8447 | In this case, a "breakpoint ... also set at..." warning is | |
8448 | unproductive. Besides. the warning phrasing is also a bit | |
8449 | inapropriate, we should use the word catchpoint, and tell | |
8450 | the user what type of catchpoint it is. The above is good | |
8451 | enough for now, though. */ | |
8452 | } | |
8453 | ||
a6d9a66e | 8454 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8455 | set_breakpoint_count (breakpoint_count + 1); |
8456 | ||
8457 | b->enable_state = bp_enabled; | |
8458 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8459 | b->number = breakpoint_count; | |
8460 | b->ignore_count = 0; | |
511a6cd4 | 8461 | b->loc->cond = cond; |
f7f9143b JB |
8462 | b->addr_string = addr_string; |
8463 | b->language = language_ada; | |
8464 | b->cond_string = cond_string; | |
8465 | b->exp_string = exp_string; | |
8466 | b->thread = -1; | |
8467 | b->ops = ops; | |
f7f9143b JB |
8468 | |
8469 | mention (b); | |
b60e7edf | 8470 | update_global_location_list (1); |
f7f9143b JB |
8471 | } |
8472 | ||
8473 | /* Implement the "catch exception" command. */ | |
8474 | ||
8475 | static void | |
44feb3ce TT |
8476 | catch_ada_exception_command (char *arg, int from_tty, |
8477 | struct cmd_list_element *command) | |
f7f9143b | 8478 | { |
a6d9a66e | 8479 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8480 | int tempflag; |
f7f9143b | 8481 | struct symtab_and_line sal; |
f7f9143b JB |
8482 | char *addr_string = NULL; |
8483 | char *exp_string = NULL; | |
8484 | char *cond_string = NULL; | |
8485 | struct expression *cond = NULL; | |
8486 | struct breakpoint_ops *ops = NULL; | |
8487 | ||
44feb3ce TT |
8488 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8489 | ||
8490 | if (!arg) | |
8491 | arg = ""; | |
f7f9143b JB |
8492 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
8493 | &cond_string, &cond, &ops); | |
a6d9a66e | 8494 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
8495 | cond_string, cond, ops, tempflag, |
8496 | from_tty); | |
8497 | } | |
8498 | ||
a96d9b2e SDJ |
8499 | /* Cleanup function for a syscall filter list. */ |
8500 | static void | |
8501 | clean_up_filters (void *arg) | |
8502 | { | |
8503 | VEC(int) *iter = *(VEC(int) **) arg; | |
8504 | VEC_free (int, iter); | |
8505 | } | |
8506 | ||
8507 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8508 | filter list, or NULL if no filtering is required. */ | |
8509 | static VEC(int) * | |
8510 | catch_syscall_split_args (char *arg) | |
8511 | { | |
8512 | VEC(int) *result = NULL; | |
8513 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8514 | ||
8515 | while (*arg != '\0') | |
8516 | { | |
8517 | int i, syscall_number; | |
8518 | char *endptr; | |
8519 | char cur_name[128]; | |
8520 | struct syscall s; | |
8521 | ||
8522 | /* Skip whitespace. */ | |
8523 | while (isspace (*arg)) | |
8524 | arg++; | |
8525 | ||
8526 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8527 | cur_name[i] = arg[i]; | |
8528 | cur_name[i] = '\0'; | |
8529 | arg += i; | |
8530 | ||
8531 | /* Check if the user provided a syscall name or a number. */ | |
8532 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8533 | if (*endptr == '\0') | |
bccd0dd2 | 8534 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8535 | else |
8536 | { | |
8537 | /* We have a name. Let's check if it's valid and convert it | |
8538 | to a number. */ | |
8539 | get_syscall_by_name (cur_name, &s); | |
8540 | ||
8541 | if (s.number == UNKNOWN_SYSCALL) | |
8542 | /* Here we have to issue an error instead of a warning, because | |
8543 | GDB cannot do anything useful if there's no syscall number to | |
8544 | be caught. */ | |
8545 | error (_("Unknown syscall name '%s'."), cur_name); | |
8546 | } | |
8547 | ||
8548 | /* Ok, it's valid. */ | |
8549 | VEC_safe_push (int, result, s.number); | |
8550 | } | |
8551 | ||
8552 | discard_cleanups (cleanup); | |
8553 | return result; | |
8554 | } | |
8555 | ||
8556 | /* Implement the "catch syscall" command. */ | |
8557 | ||
8558 | static void | |
8559 | catch_syscall_command_1 (char *arg, int from_tty, struct cmd_list_element *command) | |
8560 | { | |
8561 | int tempflag; | |
8562 | VEC(int) *filter; | |
8563 | struct syscall s; | |
8564 | struct gdbarch *gdbarch = get_current_arch (); | |
8565 | ||
8566 | /* Checking if the feature if supported. */ | |
8567 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8568 | error (_("The feature 'catch syscall' is not supported on \ | |
8569 | this architeture yet.")); | |
8570 | ||
8571 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8572 | ||
8573 | ep_skip_leading_whitespace (&arg); | |
8574 | ||
8575 | /* We need to do this first "dummy" translation in order | |
8576 | to get the syscall XML file loaded or, most important, | |
8577 | to display a warning to the user if there's no XML file | |
8578 | for his/her architecture. */ | |
8579 | get_syscall_by_number (0, &s); | |
8580 | ||
8581 | /* The allowed syntax is: | |
8582 | catch syscall | |
8583 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8584 | ||
8585 | Let's check if there's a syscall name. */ | |
8586 | ||
8587 | if (arg != NULL) | |
8588 | filter = catch_syscall_split_args (arg); | |
8589 | else | |
8590 | filter = NULL; | |
8591 | ||
8592 | create_syscall_event_catchpoint (tempflag, filter, | |
8593 | &catch_syscall_breakpoint_ops); | |
8594 | } | |
8595 | ||
f7f9143b JB |
8596 | /* Implement the "catch assert" command. */ |
8597 | ||
8598 | static void | |
44feb3ce | 8599 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8600 | { |
a6d9a66e | 8601 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8602 | int tempflag; |
f7f9143b JB |
8603 | struct symtab_and_line sal; |
8604 | char *addr_string = NULL; | |
8605 | struct breakpoint_ops *ops = NULL; | |
8606 | ||
44feb3ce TT |
8607 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8608 | ||
8609 | if (!arg) | |
8610 | arg = ""; | |
f7f9143b | 8611 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8612 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8613 | ops, tempflag, from_tty); | |
f7f9143b JB |
8614 | } |
8615 | ||
c906108c | 8616 | static void |
fba45db2 | 8617 | catch_command (char *arg, int from_tty) |
c906108c | 8618 | { |
44feb3ce | 8619 | error (_("Catch requires an event name.")); |
c906108c SS |
8620 | } |
8621 | \f | |
8622 | ||
8623 | static void | |
fba45db2 | 8624 | tcatch_command (char *arg, int from_tty) |
c906108c | 8625 | { |
44feb3ce | 8626 | error (_("Catch requires an event name.")); |
c906108c SS |
8627 | } |
8628 | ||
80f8a6eb | 8629 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8630 | |
8631 | static void | |
fba45db2 | 8632 | clear_command (char *arg, int from_tty) |
c906108c | 8633 | { |
d6e956e5 VP |
8634 | struct breakpoint *b; |
8635 | VEC(breakpoint_p) *found = 0; | |
8636 | int ix; | |
c906108c SS |
8637 | int default_match; |
8638 | struct symtabs_and_lines sals; | |
8639 | struct symtab_and_line sal; | |
c906108c SS |
8640 | int i; |
8641 | ||
8642 | if (arg) | |
8643 | { | |
8644 | sals = decode_line_spec (arg, 1); | |
8645 | default_match = 0; | |
8646 | } | |
8647 | else | |
8648 | { | |
c5aa993b | 8649 | sals.sals = (struct symtab_and_line *) |
c906108c | 8650 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8651 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8652 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8653 | sal.line = default_breakpoint_line; |
8654 | sal.symtab = default_breakpoint_symtab; | |
8655 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8656 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8657 | if (sal.symtab == 0) |
8a3fe4f8 | 8658 | error (_("No source file specified.")); |
c906108c SS |
8659 | |
8660 | sals.sals[0] = sal; | |
8661 | sals.nelts = 1; | |
8662 | ||
8663 | default_match = 1; | |
8664 | } | |
8665 | ||
ed0616c6 VP |
8666 | /* We don't call resolve_sal_pc here. That's not |
8667 | as bad as it seems, because all existing breakpoints | |
8668 | typically have both file/line and pc set. So, if | |
8669 | clear is given file/line, we can match this to existing | |
8670 | breakpoint without obtaining pc at all. | |
8671 | ||
8672 | We only support clearing given the address explicitly | |
8673 | present in breakpoint table. Say, we've set breakpoint | |
8674 | at file:line. There were several PC values for that file:line, | |
8675 | due to optimization, all in one block. | |
8676 | We've picked one PC value. If "clear" is issued with another | |
8677 | PC corresponding to the same file:line, the breakpoint won't | |
8678 | be cleared. We probably can still clear the breakpoint, but | |
8679 | since the other PC value is never presented to user, user | |
8680 | can only find it by guessing, and it does not seem important | |
8681 | to support that. */ | |
8682 | ||
c906108c | 8683 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8684 | to it. Do it in two passes, solely to preserve the current |
8685 | behavior that from_tty is forced true if we delete more than | |
8686 | one breakpoint. */ | |
c906108c | 8687 | |
80f8a6eb | 8688 | found = NULL; |
c906108c SS |
8689 | for (i = 0; i < sals.nelts; i++) |
8690 | { | |
8691 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8692 | If line given (pc == 0), clear all bpts on specified line. |
8693 | If defaulting, clear all bpts on default line | |
c906108c | 8694 | or at default pc. |
c5aa993b JM |
8695 | |
8696 | defaulting sal.pc != 0 tests to do | |
8697 | ||
8698 | 0 1 pc | |
8699 | 1 1 pc _and_ line | |
8700 | 0 0 line | |
8701 | 1 0 <can't happen> */ | |
c906108c SS |
8702 | |
8703 | sal = sals.sals[i]; | |
c906108c | 8704 | |
d6e956e5 VP |
8705 | /* Find all matching breakpoints and add them to |
8706 | 'found'. */ | |
8707 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8708 | { |
0d381245 | 8709 | int match = 0; |
80f8a6eb | 8710 | /* Are we going to delete b? */ |
cc60f2e3 | 8711 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
8712 | { |
8713 | struct bp_location *loc = b->loc; | |
8714 | for (; loc; loc = loc->next) | |
8715 | { | |
6c95b8df PA |
8716 | int pc_match = sal.pc |
8717 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8718 | && (loc->address == sal.pc) |
8719 | && (!section_is_overlay (loc->section) | |
8720 | || loc->section == sal.section); | |
8721 | int line_match = ((default_match || (0 == sal.pc)) | |
8722 | && b->source_file != NULL | |
8723 | && sal.symtab != NULL | |
6c95b8df | 8724 | && sal.pspace == loc->pspace |
0d381245 VP |
8725 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8726 | && b->line_number == sal.line); | |
8727 | if (pc_match || line_match) | |
8728 | { | |
8729 | match = 1; | |
8730 | break; | |
8731 | } | |
8732 | } | |
8733 | } | |
8734 | ||
8735 | if (match) | |
d6e956e5 | 8736 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8737 | } |
80f8a6eb MS |
8738 | } |
8739 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8740 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8741 | { |
8742 | if (arg) | |
8a3fe4f8 | 8743 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8744 | else |
8a3fe4f8 | 8745 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8746 | } |
c906108c | 8747 | |
d6e956e5 | 8748 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8749 | from_tty = 1; /* Always report if deleted more than one */ |
8750 | if (from_tty) | |
a3f17187 | 8751 | { |
d6e956e5 | 8752 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8753 | printf_unfiltered (_("Deleted breakpoint ")); |
8754 | else | |
8755 | printf_unfiltered (_("Deleted breakpoints ")); | |
8756 | } | |
80f8a6eb | 8757 | breakpoints_changed (); |
d6e956e5 VP |
8758 | |
8759 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8760 | { |
c5aa993b | 8761 | if (from_tty) |
d6e956e5 VP |
8762 | printf_unfiltered ("%d ", b->number); |
8763 | delete_breakpoint (b); | |
c906108c | 8764 | } |
80f8a6eb MS |
8765 | if (from_tty) |
8766 | putchar_unfiltered ('\n'); | |
c906108c SS |
8767 | } |
8768 | \f | |
8769 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8770 | all breakpoints that are marked for deletion, whether hit or not. | |
8771 | This is called after any breakpoint is hit, or after errors. */ | |
8772 | ||
8773 | void | |
fba45db2 | 8774 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8775 | { |
8776 | struct breakpoint *b, *temp; | |
8777 | ||
8778 | for (; bs; bs = bs->next) | |
20874c92 VP |
8779 | if (bs->breakpoint_at |
8780 | && bs->breakpoint_at->owner | |
8781 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 8782 | && bs->stop) |
4f8d1dc6 | 8783 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
8784 | |
8785 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8786 | { |
b5de0fa7 | 8787 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
8788 | delete_breakpoint (b); |
8789 | } | |
c906108c SS |
8790 | } |
8791 | ||
494cfb0f | 8792 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
8793 | Sort elements primarily by their ADDRESS (no matter what does |
8794 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
8795 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
8796 | is sorted stable way despite qsort being an instable algorithm. */ | |
8797 | ||
8798 | static int | |
494cfb0f | 8799 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 8800 | { |
494cfb0f JK |
8801 | struct bp_location *a = *(void **) ap; |
8802 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
8803 | int a_perm = a->owner->enable_state == bp_permanent; |
8804 | int b_perm = b->owner->enable_state == bp_permanent; | |
8805 | ||
8806 | if (a->address != b->address) | |
8807 | return (a->address > b->address) - (a->address < b->address); | |
8808 | ||
8809 | /* Sort permanent breakpoints first. */ | |
8810 | if (a_perm != b_perm) | |
8811 | return (a_perm < b_perm) - (a_perm > b_perm); | |
8812 | ||
8813 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
8814 | breakpoint can be sorted in arbitrary order. */ | |
8815 | ||
8816 | if (a->owner->number != b->owner->number) | |
8817 | return (a->owner->number > b->owner->number) | |
8818 | - (a->owner->number < b->owner->number); | |
8819 | ||
8820 | return (a > b) - (a < b); | |
8821 | } | |
8822 | ||
876fa593 JK |
8823 | /* Set bp_location_placed_address_before_address_max and |
8824 | bp_location_shadow_len_after_address_max according to the current content of | |
8825 | the bp_location array. */ | |
f7545552 TT |
8826 | |
8827 | static void | |
876fa593 | 8828 | bp_location_target_extensions_update (void) |
f7545552 | 8829 | { |
876fa593 JK |
8830 | struct bp_location *bl, **blp_tmp; |
8831 | ||
8832 | bp_location_placed_address_before_address_max = 0; | |
8833 | bp_location_shadow_len_after_address_max = 0; | |
8834 | ||
8835 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
8836 | { | |
8837 | CORE_ADDR start, end, addr; | |
8838 | ||
8839 | if (!bp_location_has_shadow (bl)) | |
8840 | continue; | |
8841 | ||
8842 | start = bl->target_info.placed_address; | |
8843 | end = start + bl->target_info.shadow_len; | |
8844 | ||
8845 | gdb_assert (bl->address >= start); | |
8846 | addr = bl->address - start; | |
8847 | if (addr > bp_location_placed_address_before_address_max) | |
8848 | bp_location_placed_address_before_address_max = addr; | |
8849 | ||
8850 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
8851 | ||
8852 | gdb_assert (bl->address < end); | |
8853 | addr = end - bl->address; | |
8854 | if (addr > bp_location_shadow_len_after_address_max) | |
8855 | bp_location_shadow_len_after_address_max = addr; | |
8856 | } | |
f7545552 TT |
8857 | } |
8858 | ||
4cd9bd08 | 8859 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
8860 | into the inferior, only remove already-inserted locations that no |
8861 | longer should be inserted. Functions that delete a breakpoint or | |
8862 | breakpoints should pass false, so that deleting a breakpoint | |
8863 | doesn't have the side effect of inserting the locations of other | |
8864 | breakpoints that are marked not-inserted, but should_be_inserted | |
8865 | returns true on them. | |
8866 | ||
8867 | This behaviour is useful is situations close to tear-down -- e.g., | |
8868 | after an exec, while the target still has execution, but breakpoint | |
8869 | shadows of the previous executable image should *NOT* be restored | |
8870 | to the new image; or before detaching, where the target still has | |
8871 | execution and wants to delete breakpoints from GDB's lists, and all | |
8872 | breakpoints had already been removed from the inferior. */ | |
8873 | ||
0d381245 | 8874 | static void |
b60e7edf | 8875 | update_global_location_list (int should_insert) |
0d381245 | 8876 | { |
74960c60 | 8877 | struct breakpoint *b; |
876fa593 | 8878 | struct bp_location **locp, *loc; |
f7545552 TT |
8879 | struct cleanup *cleanups; |
8880 | ||
2d134ed3 PA |
8881 | /* Used in the duplicates detection below. When iterating over all |
8882 | bp_locations, points to the first bp_location of a given address. | |
8883 | Breakpoints and watchpoints of different types are never | |
8884 | duplicates of each other. Keep one pointer for each type of | |
8885 | breakpoint/watchpoint, so we only need to loop over all locations | |
8886 | once. */ | |
8887 | struct bp_location *bp_loc_first; /* breakpoint */ | |
8888 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
8889 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
8890 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
8891 | |
8892 | /* Saved former bp_location array which we compare against the newly built | |
8893 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
8894 | struct bp_location **old_location, **old_locp; | |
8895 | unsigned old_location_count; | |
8896 | ||
8897 | old_location = bp_location; | |
8898 | old_location_count = bp_location_count; | |
8899 | bp_location = NULL; | |
8900 | bp_location_count = 0; | |
8901 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 8902 | |
74960c60 | 8903 | ALL_BREAKPOINTS (b) |
876fa593 JK |
8904 | for (loc = b->loc; loc; loc = loc->next) |
8905 | bp_location_count++; | |
8906 | ||
8907 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
8908 | locp = bp_location; | |
8909 | ALL_BREAKPOINTS (b) | |
8910 | for (loc = b->loc; loc; loc = loc->next) | |
8911 | *locp++ = loc; | |
8912 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 8913 | bp_location_compare); |
876fa593 JK |
8914 | |
8915 | bp_location_target_extensions_update (); | |
74960c60 VP |
8916 | |
8917 | /* Identify bp_location instances that are no longer present in the new | |
8918 | list, and therefore should be freed. Note that it's not necessary that | |
8919 | those locations should be removed from inferior -- if there's another | |
8920 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
8921 | we don't need to remove/insert the location. |
8922 | ||
8923 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
8924 | former bp_location array state respectively. */ | |
8925 | ||
8926 | locp = bp_location; | |
8927 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
8928 | old_locp++) | |
74960c60 | 8929 | { |
876fa593 | 8930 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 8931 | struct bp_location **loc2p; |
876fa593 JK |
8932 | |
8933 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 8934 | have to free it. */ |
c7d46a38 | 8935 | int found_object = 0; |
20874c92 VP |
8936 | /* Tells if the location should remain inserted in the target. */ |
8937 | int keep_in_target = 0; | |
8938 | int removed = 0; | |
876fa593 JK |
8939 | |
8940 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
8941 | at or being the one matching OLD_LOC. */ | |
8942 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 8943 | && (*locp)->address < old_loc->address) |
876fa593 | 8944 | locp++; |
c7d46a38 PA |
8945 | |
8946 | for (loc2p = locp; | |
8947 | (loc2p < bp_location + bp_location_count | |
8948 | && (*loc2p)->address == old_loc->address); | |
8949 | loc2p++) | |
8950 | { | |
8951 | if (*loc2p == old_loc) | |
8952 | { | |
8953 | found_object = 1; | |
8954 | break; | |
8955 | } | |
8956 | } | |
74960c60 VP |
8957 | |
8958 | /* If this location is no longer present, and inserted, look if there's | |
8959 | maybe a new location at the same address. If so, mark that one | |
8960 | inserted, and don't remove this one. This is needed so that we | |
8961 | don't have a time window where a breakpoint at certain location is not | |
8962 | inserted. */ | |
8963 | ||
876fa593 | 8964 | if (old_loc->inserted) |
0d381245 | 8965 | { |
74960c60 | 8966 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 8967 | |
876fa593 | 8968 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
8969 | { |
8970 | /* The location is still present in the location list, and still | |
8971 | should be inserted. Don't do anything. */ | |
20874c92 | 8972 | keep_in_target = 1; |
74960c60 VP |
8973 | } |
8974 | else | |
8975 | { | |
8976 | /* The location is either no longer present, or got disabled. | |
8977 | See if there's another location at the same address, in which | |
8978 | case we don't need to remove this one from the target. */ | |
876fa593 JK |
8979 | |
8980 | if (breakpoint_address_is_meaningful (old_loc->owner)) | |
8981 | { | |
876fa593 | 8982 | for (loc2p = locp; |
c7d46a38 PA |
8983 | (loc2p < bp_location + bp_location_count |
8984 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
8985 | loc2p++) |
8986 | { | |
8987 | struct bp_location *loc2 = *loc2p; | |
8988 | ||
2d134ed3 | 8989 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
8990 | { |
8991 | /* For the sake of should_be_inserted. | |
8992 | Duplicates check below will fix up this later. */ | |
8993 | loc2->duplicate = 0; | |
85d721b8 PA |
8994 | |
8995 | /* Read watchpoint locations are switched to | |
8996 | access watchpoints, if the former are not | |
8997 | supported, but the latter are. */ | |
8998 | if (is_hardware_watchpoint (old_loc->owner)) | |
8999 | { | |
9000 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9001 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9002 | } | |
9003 | ||
c7d46a38 PA |
9004 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9005 | { | |
9006 | loc2->inserted = 1; | |
9007 | loc2->target_info = old_loc->target_info; | |
9008 | keep_in_target = 1; | |
9009 | break; | |
9010 | } | |
876fa593 JK |
9011 | } |
9012 | } | |
9013 | } | |
74960c60 VP |
9014 | } |
9015 | ||
20874c92 VP |
9016 | if (!keep_in_target) |
9017 | { | |
876fa593 | 9018 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
9019 | { |
9020 | /* This is just about all we can do. We could keep this | |
9021 | location on the global list, and try to remove it next | |
9022 | time, but there's no particular reason why we will | |
9023 | succeed next time. | |
9024 | ||
876fa593 | 9025 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
9026 | as delete_breakpoint frees the breakpoint only |
9027 | after calling us. */ | |
9028 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 9029 | old_loc->owner->number); |
20874c92 VP |
9030 | } |
9031 | removed = 1; | |
9032 | } | |
0d381245 | 9033 | } |
74960c60 VP |
9034 | |
9035 | if (!found_object) | |
1c5cfe86 | 9036 | { |
db82e815 PA |
9037 | if (removed && non_stop |
9038 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9039 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9040 | { |
db82e815 PA |
9041 | /* This location was removed from the target. In |
9042 | non-stop mode, a race condition is possible where | |
9043 | we've removed a breakpoint, but stop events for that | |
9044 | breakpoint are already queued and will arrive later. | |
9045 | We apply an heuristic to be able to distinguish such | |
9046 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9047 | breakpoint location for a bit, and will retire it | |
9048 | after we see some number of events. The theory here | |
9049 | is that reporting of events should, "on the average", | |
9050 | be fair, so after a while we'll see events from all | |
9051 | threads that have anything of interest, and no longer | |
9052 | need to keep this breakpoint location around. We | |
9053 | don't hold locations forever so to reduce chances of | |
9054 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9055 | SIGTRAP. | |
9056 | ||
9057 | The heuristic failing can be disastrous on | |
9058 | decr_pc_after_break targets. | |
9059 | ||
9060 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9061 | if we fail to recognize a late breakpoint SIGTRAP, | |
9062 | because events_till_retirement has reached 0 too | |
9063 | soon, we'll fail to do the PC adjustment, and report | |
9064 | a random SIGTRAP to the user. When the user resumes | |
9065 | the inferior, it will most likely immediately crash | |
9066 | with SIGILL/SIGBUS/SEGSEGV, or worse, get silently | |
9067 | corrupted, because of being resumed e.g., in the | |
9068 | middle of a multi-byte instruction, or skipped a | |
9069 | one-byte instruction. This was actually seen happen | |
9070 | on native x86-linux, and should be less rare on | |
9071 | targets that do not support new thread events, like | |
9072 | remote, due to the heuristic depending on | |
9073 | thread_count. | |
9074 | ||
9075 | Mistaking a random SIGTRAP for a breakpoint trap | |
9076 | causes similar symptoms (PC adjustment applied when | |
9077 | it shouldn't), but then again, playing with SIGTRAPs | |
9078 | behind the debugger's back is asking for trouble. | |
9079 | ||
9080 | Since hardware watchpoint traps are always | |
9081 | distinguishable from other traps, so we don't need to | |
9082 | apply keep hardware watchpoint moribund locations | |
9083 | around. We simply always ignore hardware watchpoint | |
9084 | traps we can no longer explain. */ | |
9085 | ||
876fa593 JK |
9086 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9087 | old_loc->owner = NULL; | |
20874c92 | 9088 | |
876fa593 | 9089 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9090 | } |
9091 | else | |
876fa593 | 9092 | free_bp_location (old_loc); |
20874c92 | 9093 | } |
74960c60 | 9094 | } |
1c5cfe86 | 9095 | |
2d134ed3 PA |
9096 | /* Rescan breakpoints at the same address and section, marking the |
9097 | first one as "first" and any others as "duplicates". This is so | |
9098 | that the bpt instruction is only inserted once. If we have a | |
9099 | permanent breakpoint at the same place as BPT, make that one the | |
9100 | official one, and the rest as duplicates. Permanent breakpoints | |
9101 | are sorted first for the same address. | |
9102 | ||
9103 | Do the same for hardware watchpoints, but also considering the | |
9104 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9105 | |
2d134ed3 PA |
9106 | bp_loc_first = NULL; |
9107 | wp_loc_first = NULL; | |
9108 | awp_loc_first = NULL; | |
9109 | rwp_loc_first = NULL; | |
876fa593 | 9110 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9111 | { |
876fa593 | 9112 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9113 | struct bp_location **loc_first_p; |
876fa593 JK |
9114 | |
9115 | if (b->enable_state == bp_disabled | |
9116 | || b->enable_state == bp_call_disabled | |
9117 | || b->enable_state == bp_startup_disabled | |
9118 | || !loc->enabled | |
9119 | || loc->shlib_disabled | |
15c3d785 | 9120 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9121 | || is_tracepoint (b)) |
876fa593 JK |
9122 | continue; |
9123 | ||
9124 | /* Permanent breakpoint should always be inserted. */ | |
9125 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9126 | internal_error (__FILE__, __LINE__, | |
9127 | _("allegedly permanent breakpoint is not " | |
9128 | "actually inserted")); | |
9129 | ||
2d134ed3 PA |
9130 | if (b->type == bp_hardware_watchpoint) |
9131 | loc_first_p = &wp_loc_first; | |
9132 | else if (b->type == bp_read_watchpoint) | |
9133 | loc_first_p = &rwp_loc_first; | |
9134 | else if (b->type == bp_access_watchpoint) | |
9135 | loc_first_p = &awp_loc_first; | |
9136 | else | |
9137 | loc_first_p = &bp_loc_first; | |
9138 | ||
9139 | if (*loc_first_p == NULL | |
9140 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9141 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9142 | { |
2d134ed3 | 9143 | *loc_first_p = loc; |
876fa593 JK |
9144 | loc->duplicate = 0; |
9145 | continue; | |
9146 | } | |
9147 | ||
9148 | loc->duplicate = 1; | |
9149 | ||
2d134ed3 PA |
9150 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9151 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9152 | internal_error (__FILE__, __LINE__, |
9153 | _("another breakpoint was inserted on top of " | |
9154 | "a permanent breakpoint")); | |
0d381245 | 9155 | } |
74960c60 | 9156 | |
50c71eaf | 9157 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9158 | && (have_live_inferiors () |
2567c7d9 | 9159 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9160 | insert_breakpoint_locations (); |
f7545552 TT |
9161 | |
9162 | do_cleanups (cleanups); | |
74960c60 VP |
9163 | } |
9164 | ||
20874c92 VP |
9165 | void |
9166 | breakpoint_retire_moribund (void) | |
9167 | { | |
9168 | struct bp_location *loc; | |
9169 | int ix; | |
9170 | ||
9171 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9172 | if (--(loc->events_till_retirement) == 0) | |
9173 | { | |
9174 | free_bp_location (loc); | |
9175 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
9176 | --ix; | |
9177 | } | |
9178 | } | |
9179 | ||
74960c60 | 9180 | static void |
b60e7edf | 9181 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9182 | { |
9183 | struct gdb_exception e; | |
9184 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 9185 | update_global_location_list (inserting); |
0d381245 VP |
9186 | } |
9187 | ||
a474d7c2 PA |
9188 | /* Clear BPT from a BPS. */ |
9189 | static void | |
9190 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
9191 | { | |
9192 | bpstat bs; | |
9193 | for (bs = bps; bs; bs = bs->next) | |
9194 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
9195 | { | |
9196 | bs->breakpoint_at = NULL; | |
9197 | bs->old_val = NULL; | |
9198 | /* bs->commands will be freed later. */ | |
9199 | } | |
9200 | } | |
9201 | ||
9202 | /* Callback for iterate_over_threads. */ | |
9203 | static int | |
9204 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
9205 | { | |
9206 | struct breakpoint *bpt = data; | |
9207 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
9208 | return 0; | |
9209 | } | |
9210 | ||
53a5351d JM |
9211 | /* Delete a breakpoint and clean up all traces of it in the data |
9212 | structures. */ | |
c906108c SS |
9213 | |
9214 | void | |
fba45db2 | 9215 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9216 | { |
52f0bd74 | 9217 | struct breakpoint *b; |
c906108c | 9218 | |
8a3fe4f8 | 9219 | gdb_assert (bpt != NULL); |
c906108c SS |
9220 | |
9221 | /* Has this bp already been deleted? This can happen because multiple | |
9222 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
9223 | ||
9224 | One example of this happening is a watchpoint's scope bp. When the | |
9225 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
9226 | delete it. We also delete its scope bp. But the scope bp is marked | |
9227 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
9228 | checked for auto-deleting bp's, which are deleted. | |
9229 | ||
9230 | A real solution to this problem might involve reference counts in bp's, | |
9231 | and/or giving them pointers back to their referencing bpstat's, and | |
9232 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 9233 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
9234 | if (bpt->type == bp_none) |
9235 | return; | |
9236 | ||
e5a0a904 JK |
9237 | /* At least avoid this stale reference until the reference counting of |
9238 | breakpoints gets resolved. */ | |
9239 | if (bpt->related_breakpoint != NULL) | |
9240 | { | |
9241 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9242 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9243 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9244 | bpt->related_breakpoint = NULL; | |
9245 | } | |
9246 | ||
383f836e | 9247 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9248 | |
c906108c SS |
9249 | if (breakpoint_chain == bpt) |
9250 | breakpoint_chain = bpt->next; | |
9251 | ||
c906108c SS |
9252 | ALL_BREAKPOINTS (b) |
9253 | if (b->next == bpt) | |
c5aa993b JM |
9254 | { |
9255 | b->next = bpt->next; | |
9256 | break; | |
9257 | } | |
c906108c | 9258 | |
9add0f1b | 9259 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9260 | xfree (bpt->cond_string); |
9261 | xfree (bpt->cond_exp); | |
9262 | xfree (bpt->addr_string); | |
9263 | xfree (bpt->exp); | |
9264 | xfree (bpt->exp_string); | |
9265 | value_free (bpt->val); | |
9266 | xfree (bpt->source_file); | |
9267 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9268 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c SS |
9269 | |
9270 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
9271 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
9272 | We just check stop_bpstat for now. Note that we cannot just |
9273 | remove bpstats pointing at bpt from the stop_bpstat list | |
9274 | entirely, as breakpoint commands are associated with the bpstat; | |
9275 | if we remove it here, then the later call to | |
9276 | bpstat_do_actions (&stop_bpstat); | |
9277 | in event-top.c won't do anything, and temporary breakpoints | |
9278 | with commands won't work. */ | |
a474d7c2 | 9279 | |
a474d7c2 | 9280 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
9281 | |
9282 | /* Now that breakpoint is removed from breakpoint | |
9283 | list, update the global location list. This | |
9284 | will remove locations that used to belong to | |
9285 | this breakpoint. Do this before freeing | |
9286 | the breakpoint itself, since remove_breakpoint | |
9287 | looks at location's owner. It might be better | |
9288 | design to have location completely self-contained, | |
9289 | but it's not the case now. */ | |
b60e7edf | 9290 | update_global_location_list (0); |
74960c60 VP |
9291 | |
9292 | ||
c906108c SS |
9293 | /* On the chance that someone will soon try again to delete this same |
9294 | bp, we mark it as deleted before freeing its storage. */ | |
9295 | bpt->type = bp_none; | |
9296 | ||
b8c9b27d | 9297 | xfree (bpt); |
c906108c SS |
9298 | } |
9299 | ||
4d6140d9 AC |
9300 | static void |
9301 | do_delete_breakpoint_cleanup (void *b) | |
9302 | { | |
9303 | delete_breakpoint (b); | |
9304 | } | |
9305 | ||
9306 | struct cleanup * | |
9307 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9308 | { | |
9309 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9310 | } | |
9311 | ||
95a42b64 TT |
9312 | /* A callback for map_breakpoint_numbers that calls |
9313 | delete_breakpoint. */ | |
9314 | ||
9315 | static void | |
9316 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9317 | { | |
9318 | delete_breakpoint (b); | |
9319 | } | |
9320 | ||
c906108c | 9321 | void |
fba45db2 | 9322 | delete_command (char *arg, int from_tty) |
c906108c SS |
9323 | { |
9324 | struct breakpoint *b, *temp; | |
9325 | ||
ea9365bb TT |
9326 | dont_repeat (); |
9327 | ||
c906108c SS |
9328 | if (arg == 0) |
9329 | { | |
9330 | int breaks_to_delete = 0; | |
9331 | ||
9332 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
9333 | Do not delete internal or call-dummy breakpoints, these |
9334 | have to be deleted with an explicit breakpoint number argument. */ | |
9335 | ALL_BREAKPOINTS (b) | |
9336 | { | |
059fb39f | 9337 | if (b->type != bp_call_dummy |
aa7d318d | 9338 | && b->type != bp_std_terminate |
059fb39f | 9339 | && b->type != bp_shlib_event |
4efc6507 | 9340 | && b->type != bp_jit_event |
059fb39f PM |
9341 | && b->type != bp_thread_event |
9342 | && b->type != bp_overlay_event | |
0fd8e87f | 9343 | && b->type != bp_longjmp_master |
aa7d318d | 9344 | && b->type != bp_std_terminate_master |
059fb39f | 9345 | && b->number >= 0) |
973d738b DJ |
9346 | { |
9347 | breaks_to_delete = 1; | |
9348 | break; | |
9349 | } | |
c5aa993b | 9350 | } |
c906108c SS |
9351 | |
9352 | /* Ask user only if there are some breakpoints to delete. */ | |
9353 | if (!from_tty | |
e2e0b3e5 | 9354 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9355 | { |
c5aa993b JM |
9356 | ALL_BREAKPOINTS_SAFE (b, temp) |
9357 | { | |
059fb39f | 9358 | if (b->type != bp_call_dummy |
aa7d318d | 9359 | && b->type != bp_std_terminate |
059fb39f PM |
9360 | && b->type != bp_shlib_event |
9361 | && b->type != bp_thread_event | |
4efc6507 | 9362 | && b->type != bp_jit_event |
059fb39f | 9363 | && b->type != bp_overlay_event |
0fd8e87f | 9364 | && b->type != bp_longjmp_master |
aa7d318d | 9365 | && b->type != bp_std_terminate_master |
059fb39f | 9366 | && b->number >= 0) |
c5aa993b JM |
9367 | delete_breakpoint (b); |
9368 | } | |
c906108c SS |
9369 | } |
9370 | } | |
9371 | else | |
95a42b64 | 9372 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
9373 | } |
9374 | ||
0d381245 VP |
9375 | static int |
9376 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 9377 | { |
0d381245 VP |
9378 | for (; loc; loc = loc->next) |
9379 | if (!loc->shlib_disabled) | |
9380 | return 0; | |
9381 | return 1; | |
fe3f5fa8 VP |
9382 | } |
9383 | ||
776592bf DE |
9384 | /* Subroutine of update_breakpoint_locations to simplify it. |
9385 | Return non-zero if multiple fns in list LOC have the same name. | |
9386 | Null names are ignored. */ | |
9387 | ||
9388 | static int | |
9389 | ambiguous_names_p (struct bp_location *loc) | |
9390 | { | |
9391 | struct bp_location *l; | |
9392 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
9393 | (int (*) (const void *, const void *)) streq, | |
9394 | NULL, xcalloc, xfree); | |
9395 | ||
9396 | for (l = loc; l != NULL; l = l->next) | |
9397 | { | |
9398 | const char **slot; | |
9399 | const char *name = l->function_name; | |
9400 | ||
9401 | /* Allow for some names to be NULL, ignore them. */ | |
9402 | if (name == NULL) | |
9403 | continue; | |
9404 | ||
9405 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
9406 | INSERT); | |
9407 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
9408 | NULL. */ | |
9409 | if (*slot != NULL) | |
9410 | { | |
9411 | htab_delete (htab); | |
9412 | return 1; | |
9413 | } | |
9414 | *slot = name; | |
9415 | } | |
9416 | ||
9417 | htab_delete (htab); | |
9418 | return 0; | |
9419 | } | |
9420 | ||
fe3f5fa8 | 9421 | static void |
0d381245 VP |
9422 | update_breakpoint_locations (struct breakpoint *b, |
9423 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
9424 | { |
9425 | int i; | |
9426 | char *s; | |
0d381245 VP |
9427 | struct bp_location *existing_locations = b->loc; |
9428 | ||
9429 | /* If there's no new locations, and all existing locations | |
9430 | are pending, don't do anything. This optimizes | |
9431 | the common case where all locations are in the same | |
9432 | shared library, that was unloaded. We'd like to | |
9433 | retain the location, so that when the library | |
9434 | is loaded again, we don't loose the enabled/disabled | |
9435 | status of the individual locations. */ | |
9436 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
9437 | return; |
9438 | ||
fe3f5fa8 VP |
9439 | b->loc = NULL; |
9440 | ||
0d381245 | 9441 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 9442 | { |
0d381245 | 9443 | struct bp_location *new_loc = |
39d61571 | 9444 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 9445 | |
0d381245 VP |
9446 | /* Reparse conditions, they might contain references to the |
9447 | old symtab. */ | |
9448 | if (b->cond_string != NULL) | |
9449 | { | |
9450 | struct gdb_exception e; | |
fe3f5fa8 | 9451 | |
0d381245 VP |
9452 | s = b->cond_string; |
9453 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9454 | { | |
9455 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
9456 | 0); | |
9457 | } | |
9458 | if (e.reason < 0) | |
9459 | { | |
9460 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
9461 | b->number, e.message); | |
9462 | new_loc->enabled = 0; | |
9463 | } | |
9464 | } | |
fe3f5fa8 | 9465 | |
0d381245 VP |
9466 | if (b->source_file != NULL) |
9467 | xfree (b->source_file); | |
9468 | if (sals.sals[i].symtab == NULL) | |
9469 | b->source_file = NULL; | |
9470 | else | |
1b36a34b | 9471 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 9472 | |
0d381245 VP |
9473 | if (b->line_number == 0) |
9474 | b->line_number = sals.sals[i].line; | |
9475 | } | |
fe3f5fa8 | 9476 | |
514f746b AR |
9477 | /* Update locations of permanent breakpoints. */ |
9478 | if (b->enable_state == bp_permanent) | |
9479 | make_breakpoint_permanent (b); | |
9480 | ||
0d381245 VP |
9481 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
9482 | { | |
9483 | struct bp_location *e = existing_locations; | |
776592bf DE |
9484 | /* If there are multiple breakpoints with the same function name, |
9485 | e.g. for inline functions, comparing function names won't work. | |
9486 | Instead compare pc addresses; this is just a heuristic as things | |
9487 | may have moved, but in practice it gives the correct answer | |
9488 | often enough until a better solution is found. */ | |
9489 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
9490 | ||
0d381245 VP |
9491 | for (; e; e = e->next) |
9492 | { | |
9493 | if (!e->enabled && e->function_name) | |
9494 | { | |
9495 | struct bp_location *l = b->loc; | |
776592bf DE |
9496 | if (have_ambiguous_names) |
9497 | { | |
9498 | for (; l; l = l->next) | |
6c95b8df PA |
9499 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
9500 | l->pspace->aspace, l->address)) | |
776592bf DE |
9501 | { |
9502 | l->enabled = 0; | |
9503 | break; | |
9504 | } | |
9505 | } | |
9506 | else | |
9507 | { | |
9508 | for (; l; l = l->next) | |
9509 | if (l->function_name | |
9510 | && strcmp (e->function_name, l->function_name) == 0) | |
9511 | { | |
9512 | l->enabled = 0; | |
9513 | break; | |
9514 | } | |
9515 | } | |
0d381245 VP |
9516 | } |
9517 | } | |
9518 | } | |
fe3f5fa8 | 9519 | |
b60e7edf | 9520 | update_global_location_list (1); |
fe3f5fa8 VP |
9521 | } |
9522 | ||
9523 | ||
c906108c SS |
9524 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9525 | The value we return ends up being the return value from catch_errors. | |
9526 | Unused in this case. */ | |
9527 | ||
9528 | static int | |
4efb68b1 | 9529 | breakpoint_re_set_one (void *bint) |
c906108c | 9530 | { |
53a5351d JM |
9531 | /* get past catch_errs */ |
9532 | struct breakpoint *b = (struct breakpoint *) bint; | |
fe3f5fa8 VP |
9533 | int not_found = 0; |
9534 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9535 | struct symtabs_and_lines sals = {0}; |
9536 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9537 | char *s; |
fe3f5fa8 | 9538 | struct gdb_exception e; |
6c95b8df | 9539 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9540 | |
9541 | switch (b->type) | |
9542 | { | |
9543 | case bp_none: | |
8a3fe4f8 | 9544 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9545 | b->number); |
c906108c SS |
9546 | return 0; |
9547 | case bp_breakpoint: | |
9548 | case bp_hardware_breakpoint: | |
1042e4c0 | 9549 | case bp_tracepoint: |
7a697b8d | 9550 | case bp_fast_tracepoint: |
8bea4e01 UW |
9551 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9552 | if (b->enable_state == bp_startup_disabled) | |
9553 | return 0; | |
9554 | ||
c906108c SS |
9555 | if (b->addr_string == NULL) |
9556 | { | |
9557 | /* Anything without a string can't be re-set. */ | |
9558 | delete_breakpoint (b); | |
9559 | return 0; | |
9560 | } | |
c906108c SS |
9561 | |
9562 | set_language (b->language); | |
9563 | input_radix = b->input_radix; | |
9564 | s = b->addr_string; | |
6c95b8df PA |
9565 | |
9566 | save_current_space_and_thread (); | |
9567 | switch_to_program_space_and_thread (b->pspace); | |
9568 | ||
fe3f5fa8 | 9569 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9570 | { |
fe3f5fa8 VP |
9571 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9572 | not_found_ptr); | |
9573 | } | |
9574 | if (e.reason < 0) | |
9575 | { | |
9576 | int not_found_and_ok = 0; | |
9577 | /* For pending breakpoints, it's expected that parsing | |
9578 | will fail until the right shared library is loaded. | |
9579 | User has already told to create pending breakpoints and | |
9580 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9581 | state, then user already saw the message about that breakpoint | |
9582 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9583 | if (not_found |
9584 | && (b->condition_not_parsed | |
9585 | || (b->loc && b->loc->shlib_disabled) | |
9586 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9587 | not_found_and_ok = 1; |
9588 | ||
9589 | if (!not_found_and_ok) | |
c906108c | 9590 | { |
fe3f5fa8 VP |
9591 | /* We surely don't want to warn about the same breakpoint |
9592 | 10 times. One solution, implemented here, is disable | |
9593 | the breakpoint on error. Another solution would be to | |
9594 | have separate 'warning emitted' flag. Since this | |
9595 | happens only when a binary has changed, I don't know | |
9596 | which approach is better. */ | |
9597 | b->enable_state = bp_disabled; | |
9598 | throw_exception (e); | |
c906108c | 9599 | } |
fe3f5fa8 | 9600 | } |
c906108c | 9601 | |
6c95b8df | 9602 | if (!not_found) |
fe3f5fa8 | 9603 | { |
6c95b8df PA |
9604 | gdb_assert (sals.nelts == 1); |
9605 | ||
9606 | resolve_sal_pc (&sals.sals[0]); | |
9607 | if (b->condition_not_parsed && s && s[0]) | |
9608 | { | |
9609 | char *cond_string = 0; | |
9610 | int thread = -1; | |
9611 | int task = 0; | |
9612 | ||
9613 | find_condition_and_thread (s, sals.sals[0].pc, | |
9614 | &cond_string, &thread, &task); | |
9615 | if (cond_string) | |
9616 | b->cond_string = cond_string; | |
9617 | b->thread = thread; | |
9618 | b->task = task; | |
9619 | b->condition_not_parsed = 0; | |
9620 | } | |
9621 | ||
9622 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9623 | } |
6c95b8df PA |
9624 | |
9625 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9626 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9627 | break; |
9628 | ||
9629 | case bp_watchpoint: | |
9630 | case bp_hardware_watchpoint: | |
9631 | case bp_read_watchpoint: | |
9632 | case bp_access_watchpoint: | |
0b3de036 VP |
9633 | /* Watchpoint can be either on expression using entirely global variables, |
9634 | or it can be on local variables. | |
9635 | ||
9636 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9637 | across program restarts. Since they can use variables from shared | |
9638 | libraries, we need to reparse expression as libraries are loaded | |
9639 | and unloaded. | |
9640 | ||
9641 | Watchpoints on local variables can also change meaning as result | |
9642 | of solib event. For example, if a watchpoint uses both a local and | |
9643 | a global variables in expression, it's a local watchpoint, but | |
9644 | unloading of a shared library will make the expression invalid. | |
9645 | This is not a very common use case, but we still re-evaluate | |
9646 | expression, to avoid surprises to the user. | |
9647 | ||
9648 | Note that for local watchpoints, we re-evaluate it only if | |
9649 | watchpoints frame id is still valid. If it's not, it means | |
9650 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9651 | I'm not sure we'll ever be called in this case. | |
9652 | ||
9653 | If a local watchpoint's frame id is still valid, then | |
9654 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9655 | ||
9656 | Don't do anything about disabled watchpoints, since they will | |
9657 | be reevaluated again when enabled. */ | |
a5606eee | 9658 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9659 | break; |
c5aa993b JM |
9660 | /* We needn't really do anything to reset these, since the mask |
9661 | that requests them is unaffected by e.g., new libraries being | |
9662 | loaded. */ | |
ce78b96d | 9663 | case bp_catchpoint: |
c906108c | 9664 | break; |
c5aa993b | 9665 | |
c906108c | 9666 | default: |
a3f17187 | 9667 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9668 | /* fall through */ |
0fd8e87f UW |
9669 | /* Delete overlay event and longjmp master breakpoints; they will be |
9670 | reset later by breakpoint_re_set. */ | |
1900040c | 9671 | case bp_overlay_event: |
0fd8e87f | 9672 | case bp_longjmp_master: |
aa7d318d | 9673 | case bp_std_terminate_master: |
c906108c SS |
9674 | delete_breakpoint (b); |
9675 | break; | |
9676 | ||
c5aa993b JM |
9677 | /* This breakpoint is special, it's set up when the inferior |
9678 | starts and we really don't want to touch it. */ | |
c906108c SS |
9679 | case bp_shlib_event: |
9680 | ||
c4093a6a JM |
9681 | /* Like bp_shlib_event, this breakpoint type is special. |
9682 | Once it is set up, we do not want to touch it. */ | |
9683 | case bp_thread_event: | |
9684 | ||
c5aa993b JM |
9685 | /* Keep temporary breakpoints, which can be encountered when we step |
9686 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9687 | Otherwise these should have been blown away via the cleanup chain | |
9688 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9689 | case bp_until: |
9690 | case bp_finish: | |
9691 | case bp_watchpoint_scope: | |
9692 | case bp_call_dummy: | |
aa7d318d | 9693 | case bp_std_terminate: |
c906108c | 9694 | case bp_step_resume: |
611c83ae PA |
9695 | case bp_longjmp: |
9696 | case bp_longjmp_resume: | |
4efc6507 | 9697 | case bp_jit_event: |
c906108c SS |
9698 | break; |
9699 | } | |
9700 | ||
6c95b8df | 9701 | do_cleanups (cleanups); |
c906108c SS |
9702 | return 0; |
9703 | } | |
9704 | ||
69de3c6a | 9705 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9706 | void |
69de3c6a | 9707 | breakpoint_re_set (void) |
c906108c SS |
9708 | { |
9709 | struct breakpoint *b, *temp; | |
9710 | enum language save_language; | |
9711 | int save_input_radix; | |
6c95b8df | 9712 | struct cleanup *old_chain; |
c5aa993b | 9713 | |
c906108c SS |
9714 | save_language = current_language->la_language; |
9715 | save_input_radix = input_radix; | |
6c95b8df PA |
9716 | old_chain = save_current_program_space (); |
9717 | ||
c906108c | 9718 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9719 | { |
53a5351d | 9720 | /* Format possible error msg */ |
fe3f5fa8 | 9721 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9722 | b->number); |
9723 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9724 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9725 | do_cleanups (cleanups); |
c5aa993b | 9726 | } |
c906108c SS |
9727 | set_language (save_language); |
9728 | input_radix = save_input_radix; | |
e62c965a | 9729 | |
0756c555 | 9730 | jit_breakpoint_re_set (); |
4efc6507 | 9731 | |
6c95b8df PA |
9732 | do_cleanups (old_chain); |
9733 | ||
69de3c6a | 9734 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9735 | create_longjmp_master_breakpoint ("longjmp"); |
9736 | create_longjmp_master_breakpoint ("_longjmp"); | |
9737 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9738 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 9739 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
9740 | } |
9741 | \f | |
c906108c SS |
9742 | /* Reset the thread number of this breakpoint: |
9743 | ||
9744 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9745 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9746 | void |
fba45db2 | 9747 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9748 | { |
9749 | if (b->thread != -1) | |
9750 | { | |
39f77062 KB |
9751 | if (in_thread_list (inferior_ptid)) |
9752 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9753 | |
9754 | /* We're being called after following a fork. The new fork is | |
9755 | selected as current, and unless this was a vfork will have a | |
9756 | different program space from the original thread. Reset that | |
9757 | as well. */ | |
9758 | b->loc->pspace = current_program_space; | |
c906108c SS |
9759 | } |
9760 | } | |
9761 | ||
03ac34d5 MS |
9762 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9763 | If from_tty is nonzero, it prints a message to that effect, | |
9764 | which ends with a period (no newline). */ | |
9765 | ||
c906108c | 9766 | void |
fba45db2 | 9767 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9768 | { |
52f0bd74 | 9769 | struct breakpoint *b; |
c906108c SS |
9770 | |
9771 | if (count < 0) | |
9772 | count = 0; | |
9773 | ||
9774 | ALL_BREAKPOINTS (b) | |
9775 | if (b->number == bptnum) | |
c5aa993b | 9776 | { |
d77f58be SS |
9777 | if (is_tracepoint (b)) |
9778 | { | |
9779 | if (from_tty && count != 0) | |
9780 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
9781 | bptnum); | |
9782 | return; | |
9783 | } | |
9784 | ||
c5aa993b | 9785 | b->ignore_count = count; |
221ea385 KS |
9786 | if (from_tty) |
9787 | { | |
9788 | if (count == 0) | |
a3f17187 | 9789 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
9790 | bptnum); |
9791 | else if (count == 1) | |
a3f17187 | 9792 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
9793 | bptnum); |
9794 | else | |
a3f17187 | 9795 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
9796 | count, bptnum); |
9797 | } | |
c5aa993b | 9798 | breakpoints_changed (); |
383f836e | 9799 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
9800 | return; |
9801 | } | |
c906108c | 9802 | |
8a3fe4f8 | 9803 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
9804 | } |
9805 | ||
b2175913 MS |
9806 | void |
9807 | make_breakpoint_silent (struct breakpoint *b) | |
9808 | { | |
9809 | /* Silence the breakpoint. */ | |
9810 | b->silent = 1; | |
9811 | } | |
9812 | ||
c906108c SS |
9813 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
9814 | ||
9815 | static void | |
fba45db2 | 9816 | ignore_command (char *args, int from_tty) |
c906108c SS |
9817 | { |
9818 | char *p = args; | |
52f0bd74 | 9819 | int num; |
c906108c SS |
9820 | |
9821 | if (p == 0) | |
e2e0b3e5 | 9822 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 9823 | |
c906108c | 9824 | num = get_number (&p); |
5c44784c | 9825 | if (num == 0) |
8a3fe4f8 | 9826 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 9827 | if (*p == 0) |
8a3fe4f8 | 9828 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
9829 | |
9830 | set_ignore_count (num, | |
9831 | longest_to_int (value_as_long (parse_and_eval (p))), | |
9832 | from_tty); | |
221ea385 KS |
9833 | if (from_tty) |
9834 | printf_filtered ("\n"); | |
c906108c SS |
9835 | } |
9836 | \f | |
9837 | /* Call FUNCTION on each of the breakpoints | |
9838 | whose numbers are given in ARGS. */ | |
9839 | ||
9840 | static void | |
95a42b64 TT |
9841 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
9842 | void *), | |
9843 | void *data) | |
c906108c | 9844 | { |
52f0bd74 | 9845 | char *p = args; |
c906108c | 9846 | char *p1; |
52f0bd74 AC |
9847 | int num; |
9848 | struct breakpoint *b, *tmp; | |
11cf8741 | 9849 | int match; |
c906108c SS |
9850 | |
9851 | if (p == 0) | |
e2e0b3e5 | 9852 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
9853 | |
9854 | while (*p) | |
9855 | { | |
11cf8741 | 9856 | match = 0; |
c906108c | 9857 | p1 = p; |
c5aa993b | 9858 | |
5c44784c JM |
9859 | num = get_number_or_range (&p1); |
9860 | if (num == 0) | |
c5aa993b | 9861 | { |
8a3fe4f8 | 9862 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
9863 | } |
9864 | else | |
9865 | { | |
9866 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
9867 | if (b->number == num) | |
9868 | { | |
9869 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 9870 | match = 1; |
95a42b64 | 9871 | function (b, data); |
5c44784c | 9872 | if (related_breakpoint) |
95a42b64 | 9873 | function (related_breakpoint, data); |
11cf8741 | 9874 | break; |
5c44784c | 9875 | } |
11cf8741 | 9876 | if (match == 0) |
a3f17187 | 9877 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 9878 | } |
c906108c SS |
9879 | p = p1; |
9880 | } | |
9881 | } | |
9882 | ||
0d381245 VP |
9883 | static struct bp_location * |
9884 | find_location_by_number (char *number) | |
9885 | { | |
9886 | char *dot = strchr (number, '.'); | |
9887 | char *p1; | |
9888 | int bp_num; | |
9889 | int loc_num; | |
9890 | struct breakpoint *b; | |
9891 | struct bp_location *loc; | |
9892 | ||
9893 | *dot = '\0'; | |
9894 | ||
9895 | p1 = number; | |
9896 | bp_num = get_number_or_range (&p1); | |
9897 | if (bp_num == 0) | |
9898 | error (_("Bad breakpoint number '%s'"), number); | |
9899 | ||
9900 | ALL_BREAKPOINTS (b) | |
9901 | if (b->number == bp_num) | |
9902 | { | |
9903 | break; | |
9904 | } | |
9905 | ||
9906 | if (!b || b->number != bp_num) | |
9907 | error (_("Bad breakpoint number '%s'"), number); | |
9908 | ||
9909 | p1 = dot+1; | |
9910 | loc_num = get_number_or_range (&p1); | |
9911 | if (loc_num == 0) | |
9912 | error (_("Bad breakpoint location number '%s'"), number); | |
9913 | ||
9914 | --loc_num; | |
9915 | loc = b->loc; | |
9916 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
9917 | ; | |
9918 | if (!loc) | |
9919 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
9920 | ||
9921 | return loc; | |
9922 | } | |
9923 | ||
9924 | ||
1900040c MS |
9925 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9926 | If from_tty is nonzero, it prints a message to that effect, | |
9927 | which ends with a period (no newline). */ | |
9928 | ||
c906108c | 9929 | void |
fba45db2 | 9930 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9931 | { |
9932 | /* Never disable a watchpoint scope breakpoint; we want to | |
9933 | hit them when we leave scope so we can delete both the | |
9934 | watchpoint and its scope breakpoint at that time. */ | |
9935 | if (bpt->type == bp_watchpoint_scope) | |
9936 | return; | |
9937 | ||
c2c6d25f | 9938 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 9939 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
9940 | return; |
9941 | ||
b5de0fa7 | 9942 | bpt->enable_state = bp_disabled; |
c906108c | 9943 | |
b60e7edf | 9944 | update_global_location_list (0); |
c906108c | 9945 | |
383f836e | 9946 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9947 | } |
9948 | ||
95a42b64 TT |
9949 | /* A callback for map_breakpoint_numbers that calls |
9950 | disable_breakpoint. */ | |
9951 | ||
9952 | static void | |
9953 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
9954 | { | |
9955 | disable_breakpoint (b); | |
9956 | } | |
9957 | ||
c906108c | 9958 | static void |
fba45db2 | 9959 | disable_command (char *args, int from_tty) |
c906108c | 9960 | { |
52f0bd74 | 9961 | struct breakpoint *bpt; |
c906108c SS |
9962 | if (args == 0) |
9963 | ALL_BREAKPOINTS (bpt) | |
9964 | switch (bpt->type) | |
c5aa993b JM |
9965 | { |
9966 | case bp_none: | |
8a3fe4f8 | 9967 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 9968 | bpt->number); |
c5aa993b JM |
9969 | continue; |
9970 | case bp_breakpoint: | |
1042e4c0 | 9971 | case bp_tracepoint: |
7a697b8d | 9972 | case bp_fast_tracepoint: |
ce78b96d | 9973 | case bp_catchpoint: |
c5aa993b JM |
9974 | case bp_hardware_breakpoint: |
9975 | case bp_watchpoint: | |
9976 | case bp_hardware_watchpoint: | |
9977 | case bp_read_watchpoint: | |
9978 | case bp_access_watchpoint: | |
9979 | disable_breakpoint (bpt); | |
9980 | default: | |
9981 | continue; | |
9982 | } | |
0d381245 VP |
9983 | else if (strchr (args, '.')) |
9984 | { | |
9985 | struct bp_location *loc = find_location_by_number (args); | |
9986 | if (loc) | |
9987 | loc->enabled = 0; | |
b60e7edf | 9988 | update_global_location_list (0); |
0d381245 | 9989 | } |
c906108c | 9990 | else |
95a42b64 | 9991 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
9992 | } |
9993 | ||
9994 | static void | |
fba45db2 | 9995 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 9996 | { |
afe38095 | 9997 | int target_resources_ok; |
c906108c SS |
9998 | |
9999 | if (bpt->type == bp_hardware_breakpoint) | |
10000 | { | |
10001 | int i; | |
c5aa993b | 10002 | i = hw_breakpoint_used_count (); |
53a5351d | 10003 | target_resources_ok = |
d92524f1 | 10004 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10005 | i + 1, 0); |
c906108c | 10006 | if (target_resources_ok == 0) |
8a3fe4f8 | 10007 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10008 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10009 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10010 | } |
10011 | ||
cc60f2e3 | 10012 | if (is_watchpoint (bpt)) |
c906108c | 10013 | { |
dde02812 ES |
10014 | struct gdb_exception e; |
10015 | ||
10016 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10017 | { |
dde02812 | 10018 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10019 | } |
dde02812 | 10020 | if (e.reason < 0) |
c5aa993b | 10021 | { |
dde02812 ES |
10022 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10023 | bpt->number); | |
10024 | return; | |
c5aa993b | 10025 | } |
c906108c | 10026 | } |
0101ce28 | 10027 | |
b4c291bb KH |
10028 | if (bpt->enable_state != bp_permanent) |
10029 | bpt->enable_state = bp_enabled; | |
10030 | bpt->disposition = disposition; | |
b60e7edf | 10031 | update_global_location_list (1); |
b4c291bb KH |
10032 | breakpoints_changed (); |
10033 | ||
383f836e | 10034 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10035 | } |
10036 | ||
fe3f5fa8 | 10037 | |
c906108c | 10038 | void |
fba45db2 | 10039 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10040 | { |
10041 | do_enable_breakpoint (bpt, bpt->disposition); | |
10042 | } | |
10043 | ||
95a42b64 TT |
10044 | /* A callback for map_breakpoint_numbers that calls |
10045 | enable_breakpoint. */ | |
10046 | ||
10047 | static void | |
10048 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10049 | { | |
10050 | enable_breakpoint (b); | |
10051 | } | |
10052 | ||
c906108c SS |
10053 | /* The enable command enables the specified breakpoints (or all defined |
10054 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10055 | in stopping the inferior. */ |
c906108c | 10056 | |
c906108c | 10057 | static void |
fba45db2 | 10058 | enable_command (char *args, int from_tty) |
c906108c | 10059 | { |
52f0bd74 | 10060 | struct breakpoint *bpt; |
c906108c SS |
10061 | if (args == 0) |
10062 | ALL_BREAKPOINTS (bpt) | |
10063 | switch (bpt->type) | |
c5aa993b JM |
10064 | { |
10065 | case bp_none: | |
8a3fe4f8 | 10066 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10067 | bpt->number); |
c5aa993b JM |
10068 | continue; |
10069 | case bp_breakpoint: | |
1042e4c0 | 10070 | case bp_tracepoint: |
7a697b8d | 10071 | case bp_fast_tracepoint: |
ce78b96d | 10072 | case bp_catchpoint: |
c5aa993b JM |
10073 | case bp_hardware_breakpoint: |
10074 | case bp_watchpoint: | |
10075 | case bp_hardware_watchpoint: | |
10076 | case bp_read_watchpoint: | |
10077 | case bp_access_watchpoint: | |
10078 | enable_breakpoint (bpt); | |
10079 | default: | |
10080 | continue; | |
10081 | } | |
0d381245 VP |
10082 | else if (strchr (args, '.')) |
10083 | { | |
10084 | struct bp_location *loc = find_location_by_number (args); | |
10085 | if (loc) | |
10086 | loc->enabled = 1; | |
b60e7edf | 10087 | update_global_location_list (1); |
0d381245 | 10088 | } |
c906108c | 10089 | else |
95a42b64 | 10090 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10091 | } |
10092 | ||
10093 | static void | |
95a42b64 | 10094 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10095 | { |
b5de0fa7 | 10096 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10097 | } |
10098 | ||
c906108c | 10099 | static void |
fba45db2 | 10100 | enable_once_command (char *args, int from_tty) |
c906108c | 10101 | { |
95a42b64 | 10102 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10103 | } |
10104 | ||
10105 | static void | |
95a42b64 | 10106 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10107 | { |
b5de0fa7 | 10108 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10109 | } |
10110 | ||
c906108c | 10111 | static void |
fba45db2 | 10112 | enable_delete_command (char *args, int from_tty) |
c906108c | 10113 | { |
95a42b64 | 10114 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10115 | } |
10116 | \f | |
fa8d40ab JJ |
10117 | static void |
10118 | set_breakpoint_cmd (char *args, int from_tty) | |
10119 | { | |
10120 | } | |
10121 | ||
10122 | static void | |
10123 | show_breakpoint_cmd (char *args, int from_tty) | |
10124 | { | |
10125 | } | |
10126 | ||
1f3b5d1b PP |
10127 | /* Invalidate last known value of any hardware watchpoint if |
10128 | the memory which that value represents has been written to by | |
10129 | GDB itself. */ | |
10130 | ||
10131 | static void | |
10132 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10133 | const bfd_byte *data) | |
10134 | { | |
10135 | struct breakpoint *bp; | |
10136 | ||
10137 | ALL_BREAKPOINTS (bp) | |
10138 | if (bp->enable_state == bp_enabled | |
10139 | && bp->type == bp_hardware_watchpoint | |
10140 | && bp->val_valid && bp->val) | |
10141 | { | |
10142 | struct bp_location *loc; | |
10143 | ||
10144 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10145 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10146 | && loc->address + loc->length > addr | |
10147 | && addr + len > loc->address) | |
10148 | { | |
10149 | value_free (bp->val); | |
10150 | bp->val = NULL; | |
10151 | bp->val_valid = 0; | |
10152 | } | |
10153 | } | |
10154 | } | |
10155 | ||
c906108c SS |
10156 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10157 | ||
10158 | struct symtabs_and_lines | |
fba45db2 | 10159 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10160 | { |
10161 | struct symtabs_and_lines sals; | |
10162 | if (string == 0) | |
8a3fe4f8 | 10163 | error (_("Empty line specification.")); |
c906108c SS |
10164 | if (default_breakpoint_valid) |
10165 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10166 | default_breakpoint_symtab, |
10167 | default_breakpoint_line, | |
68219205 | 10168 | (char ***) NULL, NULL); |
c906108c SS |
10169 | else |
10170 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10171 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10172 | if (*string) |
8a3fe4f8 | 10173 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10174 | return sals; |
10175 | } | |
8181d85f DJ |
10176 | |
10177 | /* Create and insert a raw software breakpoint at PC. Return an | |
10178 | identifier, which should be used to remove the breakpoint later. | |
10179 | In general, places which call this should be using something on the | |
10180 | breakpoint chain instead; this function should be eliminated | |
10181 | someday. */ | |
10182 | ||
10183 | void * | |
6c95b8df PA |
10184 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10185 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10186 | { |
10187 | struct bp_target_info *bp_tgt; | |
10188 | ||
6c95b8df | 10189 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10190 | |
6c95b8df | 10191 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10192 | bp_tgt->placed_address = pc; |
6c95b8df | 10193 | |
a6d9a66e | 10194 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10195 | { |
10196 | /* Could not insert the breakpoint. */ | |
10197 | xfree (bp_tgt); | |
10198 | return NULL; | |
10199 | } | |
10200 | ||
10201 | return bp_tgt; | |
10202 | } | |
10203 | ||
10204 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
10205 | ||
10206 | int | |
a6d9a66e | 10207 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
10208 | { |
10209 | struct bp_target_info *bp_tgt = bp; | |
10210 | int ret; | |
10211 | ||
a6d9a66e | 10212 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
10213 | xfree (bp_tgt); |
10214 | ||
10215 | return ret; | |
10216 | } | |
10217 | ||
10218 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
10219 | ||
10220 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 10221 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
10222 | |
10223 | /* Create and insert a breakpoint for software single step. */ | |
10224 | ||
10225 | void | |
6c95b8df PA |
10226 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
10227 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
10228 | { |
10229 | void **bpt_p; | |
10230 | ||
10231 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
10232 | { |
10233 | bpt_p = &single_step_breakpoints[0]; | |
10234 | single_step_gdbarch[0] = gdbarch; | |
10235 | } | |
8181d85f DJ |
10236 | else |
10237 | { | |
10238 | gdb_assert (single_step_breakpoints[1] == NULL); | |
10239 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 10240 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
10241 | } |
10242 | ||
10243 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
10244 | to only create the breakpoints once, and actually put them on the | |
10245 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
10246 | adjust the addresses each time they were needed. Doing this requires | |
10247 | corresponding changes elsewhere where single step breakpoints are | |
10248 | handled, however. So, for now, we use this. */ | |
10249 | ||
6c95b8df | 10250 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 10251 | if (*bpt_p == NULL) |
5af949e3 UW |
10252 | error (_("Could not insert single-step breakpoint at %s"), |
10253 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
10254 | } |
10255 | ||
10256 | /* Remove and delete any breakpoints used for software single step. */ | |
10257 | ||
10258 | void | |
10259 | remove_single_step_breakpoints (void) | |
10260 | { | |
10261 | gdb_assert (single_step_breakpoints[0] != NULL); | |
10262 | ||
10263 | /* See insert_single_step_breakpoint for more about this deprecated | |
10264 | call. */ | |
a6d9a66e UW |
10265 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
10266 | single_step_breakpoints[0]); | |
10267 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
10268 | single_step_breakpoints[0] = NULL; |
10269 | ||
10270 | if (single_step_breakpoints[1] != NULL) | |
10271 | { | |
a6d9a66e UW |
10272 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
10273 | single_step_breakpoints[1]); | |
10274 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
10275 | single_step_breakpoints[1] = NULL; |
10276 | } | |
10277 | } | |
10278 | ||
1aafd4da UW |
10279 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
10280 | ||
10281 | static int | |
6c95b8df | 10282 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
1aafd4da UW |
10283 | { |
10284 | int i; | |
10285 | ||
10286 | for (i = 0; i < 2; i++) | |
10287 | { | |
10288 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
10289 | if (bp_tgt |
10290 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
10291 | bp_tgt->placed_address, | |
10292 | aspace, pc)) | |
1aafd4da UW |
10293 | return 1; |
10294 | } | |
10295 | ||
10296 | return 0; | |
10297 | } | |
10298 | ||
a96d9b2e SDJ |
10299 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
10300 | non-zero otherwise. */ | |
10301 | static int | |
10302 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
10303 | { | |
10304 | if (syscall_catchpoint_p (bp) | |
10305 | && bp->enable_state != bp_disabled | |
10306 | && bp->enable_state != bp_call_disabled) | |
10307 | return 1; | |
10308 | else | |
10309 | return 0; | |
10310 | } | |
10311 | ||
10312 | int | |
10313 | catch_syscall_enabled (void) | |
10314 | { | |
10315 | struct inferior *inf = current_inferior (); | |
10316 | ||
10317 | return inf->total_syscalls_count != 0; | |
10318 | } | |
10319 | ||
10320 | int | |
10321 | catching_syscall_number (int syscall_number) | |
10322 | { | |
10323 | struct breakpoint *bp; | |
10324 | ||
10325 | ALL_BREAKPOINTS (bp) | |
10326 | if (is_syscall_catchpoint_enabled (bp)) | |
10327 | { | |
10328 | if (bp->syscalls_to_be_caught) | |
10329 | { | |
10330 | int i, iter; | |
10331 | for (i = 0; | |
10332 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
10333 | i++) | |
10334 | if (syscall_number == iter) | |
10335 | return 1; | |
10336 | } | |
10337 | else | |
10338 | return 1; | |
10339 | } | |
10340 | ||
10341 | return 0; | |
10342 | } | |
10343 | ||
10344 | /* Complete syscall names. Used by "catch syscall". */ | |
10345 | static char ** | |
10346 | catch_syscall_completer (struct cmd_list_element *cmd, | |
10347 | char *text, char *word) | |
10348 | { | |
10349 | const char **list = get_syscall_names (); | |
10350 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
10351 | } | |
10352 | ||
1042e4c0 SS |
10353 | /* Tracepoint-specific operations. */ |
10354 | ||
10355 | /* Set tracepoint count to NUM. */ | |
10356 | static void | |
10357 | set_tracepoint_count (int num) | |
10358 | { | |
10359 | tracepoint_count = num; | |
4fa62494 | 10360 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
10361 | } |
10362 | ||
10363 | void | |
10364 | trace_command (char *arg, int from_tty) | |
10365 | { | |
8cdf0e15 VP |
10366 | if (create_breakpoint (get_current_arch (), |
10367 | arg, | |
10368 | NULL, 0, 1 /* parse arg */, | |
10369 | 0 /* tempflag */, 0 /* hardwareflag */, | |
10370 | 1 /* traceflag */, | |
10371 | 0 /* Ignore count */, | |
10372 | pending_break_support, | |
10373 | NULL, | |
10374 | from_tty, | |
10375 | 1 /* enabled */)) | |
fd9b8c24 | 10376 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
10377 | } |
10378 | ||
7a697b8d SS |
10379 | void |
10380 | ftrace_command (char *arg, int from_tty) | |
10381 | { | |
8cdf0e15 VP |
10382 | if (create_breakpoint (get_current_arch (), |
10383 | arg, | |
10384 | NULL, 0, 1 /* parse arg */, | |
10385 | 0 /* tempflag */, 1 /* hardwareflag */, | |
10386 | 1 /* traceflag */, | |
10387 | 0 /* Ignore count */, | |
10388 | pending_break_support, | |
10389 | NULL, | |
10390 | from_tty, | |
10391 | 1 /* enabled */)) | |
fd9b8c24 | 10392 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
10393 | } |
10394 | ||
409873ef SS |
10395 | /* Set up a fake reader function that gets command lines from a linked |
10396 | list that was acquired during tracepoint uploading. */ | |
10397 | ||
10398 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 10399 | static int next_cmd; |
409873ef SS |
10400 | |
10401 | static char * | |
10402 | read_uploaded_action (void) | |
10403 | { | |
10404 | char *rslt; | |
10405 | ||
3149d8c1 | 10406 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 10407 | |
3149d8c1 | 10408 | next_cmd++; |
409873ef SS |
10409 | |
10410 | return rslt; | |
10411 | } | |
10412 | ||
00bf0b85 SS |
10413 | /* Given information about a tracepoint as recorded on a target (which |
10414 | can be either a live system or a trace file), attempt to create an | |
10415 | equivalent GDB tracepoint. This is not a reliable process, since | |
10416 | the target does not necessarily have all the information used when | |
10417 | the tracepoint was originally defined. */ | |
10418 | ||
10419 | struct breakpoint * | |
10420 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 10421 | { |
409873ef | 10422 | char *addr_str, small_buf[100]; |
d5551862 | 10423 | struct breakpoint *tp; |
fd9b8c24 | 10424 | |
409873ef SS |
10425 | if (utp->at_string) |
10426 | addr_str = utp->at_string; | |
10427 | else | |
10428 | { | |
10429 | /* In the absence of a source location, fall back to raw | |
10430 | address. Since there is no way to confirm that the address | |
10431 | means the same thing as when the trace was started, warn the | |
10432 | user. */ | |
10433 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
10434 | utp->number); | |
10435 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
10436 | addr_str = small_buf; | |
10437 | } | |
10438 | ||
10439 | /* There's not much we can do with a sequence of bytecodes. */ | |
10440 | if (utp->cond && !utp->cond_string) | |
10441 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
10442 | utp->number); | |
d5551862 | 10443 | |
8cdf0e15 | 10444 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
10445 | addr_str, |
10446 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 VP |
10447 | 0 /* tempflag */, |
10448 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
10449 | 1 /* traceflag */, | |
10450 | 0 /* Ignore count */, | |
10451 | pending_break_support, | |
10452 | NULL, | |
10453 | 0 /* from_tty */, | |
10454 | utp->enabled /* enabled */)) | |
fd9b8c24 PA |
10455 | return NULL; |
10456 | ||
00bf0b85 SS |
10457 | set_tracepoint_count (breakpoint_count); |
10458 | ||
409873ef | 10459 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
10460 | tp = get_tracepoint (tracepoint_count); |
10461 | gdb_assert (tp != NULL); | |
d5551862 | 10462 | |
00bf0b85 SS |
10463 | if (utp->pass > 0) |
10464 | { | |
409873ef | 10465 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 10466 | |
409873ef | 10467 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
10468 | } |
10469 | ||
409873ef SS |
10470 | /* If we have uploaded versions of the original commands, set up a |
10471 | special-purpose "reader" function and call the usual command line | |
10472 | reader, then pass the result to the breakpoint command-setting | |
10473 | function. */ | |
3149d8c1 | 10474 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 10475 | { |
409873ef | 10476 | struct command_line *cmd_list; |
00bf0b85 | 10477 | |
409873ef | 10478 | this_utp = utp; |
3149d8c1 | 10479 | next_cmd = 0; |
d5551862 | 10480 | |
409873ef SS |
10481 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
10482 | ||
10483 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 10484 | } |
3149d8c1 SS |
10485 | else if (!VEC_empty (char_ptr, utp->actions) |
10486 | || !VEC_empty (char_ptr, utp->step_actions)) | |
409873ef SS |
10487 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), |
10488 | utp->number); | |
00bf0b85 SS |
10489 | |
10490 | return tp; | |
10491 | } | |
10492 | ||
1042e4c0 SS |
10493 | /* Print information on tracepoint number TPNUM_EXP, or all if |
10494 | omitted. */ | |
10495 | ||
10496 | static void | |
10497 | tracepoints_info (char *tpnum_exp, int from_tty) | |
10498 | { | |
d77f58be SS |
10499 | int tpnum = -1, num_printed; |
10500 | ||
10501 | if (tpnum_exp) | |
10502 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 10503 | |
d77f58be SS |
10504 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
10505 | ||
10506 | if (num_printed == 0) | |
1042e4c0 | 10507 | { |
d77f58be SS |
10508 | if (tpnum == -1) |
10509 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
10510 | else | |
10511 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 10512 | } |
ad443146 SS |
10513 | |
10514 | default_collect_info (); | |
1042e4c0 SS |
10515 | } |
10516 | ||
10517 | /* The 'enable trace' command enables tracepoints. | |
10518 | Not supported by all targets. */ | |
10519 | static void | |
10520 | enable_trace_command (char *args, int from_tty) | |
10521 | { | |
10522 | enable_command (args, from_tty); | |
10523 | } | |
10524 | ||
10525 | /* The 'disable trace' command disables tracepoints. | |
10526 | Not supported by all targets. */ | |
10527 | static void | |
10528 | disable_trace_command (char *args, int from_tty) | |
10529 | { | |
10530 | disable_command (args, from_tty); | |
10531 | } | |
10532 | ||
10533 | /* Remove a tracepoint (or all if no argument) */ | |
10534 | static void | |
10535 | delete_trace_command (char *arg, int from_tty) | |
10536 | { | |
10537 | struct breakpoint *b, *temp; | |
10538 | ||
10539 | dont_repeat (); | |
10540 | ||
10541 | if (arg == 0) | |
10542 | { | |
10543 | int breaks_to_delete = 0; | |
10544 | ||
10545 | /* Delete all breakpoints if no argument. | |
10546 | Do not delete internal or call-dummy breakpoints, these | |
10547 | have to be deleted with an explicit breakpoint number argument. */ | |
10548 | ALL_TRACEPOINTS (b) | |
10549 | { | |
10550 | if (b->number >= 0) | |
10551 | { | |
10552 | breaks_to_delete = 1; | |
10553 | break; | |
10554 | } | |
10555 | } | |
10556 | ||
10557 | /* Ask user only if there are some breakpoints to delete. */ | |
10558 | if (!from_tty | |
10559 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
10560 | { | |
10561 | ALL_BREAKPOINTS_SAFE (b, temp) | |
10562 | { | |
d77f58be | 10563 | if (is_tracepoint (b) |
059fb39f | 10564 | && b->number >= 0) |
1042e4c0 SS |
10565 | delete_breakpoint (b); |
10566 | } | |
10567 | } | |
10568 | } | |
10569 | else | |
95a42b64 | 10570 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
10571 | } |
10572 | ||
10573 | /* Set passcount for tracepoint. | |
10574 | ||
10575 | First command argument is passcount, second is tracepoint number. | |
10576 | If tracepoint number omitted, apply to most recently defined. | |
10577 | Also accepts special argument "all". */ | |
10578 | ||
10579 | static void | |
10580 | trace_pass_command (char *args, int from_tty) | |
10581 | { | |
10582 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10583 | unsigned int count; | |
10584 | int all = 0; | |
10585 | ||
10586 | if (args == 0 || *args == 0) | |
10587 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10588 | ||
10589 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10590 | ||
10591 | while (*args && isspace ((int) *args)) | |
10592 | args++; | |
10593 | ||
10594 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10595 | { | |
10596 | args += 3; /* Skip special argument "all". */ | |
10597 | all = 1; | |
10598 | if (*args) | |
10599 | error (_("Junk at end of arguments.")); | |
10600 | } | |
10601 | else | |
10602 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10603 | ||
10604 | do | |
10605 | { | |
10606 | if (t1) | |
10607 | { | |
10608 | ALL_TRACEPOINTS (t2) | |
10609 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10610 | { | |
10611 | t2->pass_count = count; | |
10612 | observer_notify_tracepoint_modified (t2->number); | |
10613 | if (from_tty) | |
10614 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10615 | t2->number, count); | |
10616 | } | |
10617 | if (! all && *args) | |
10618 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10619 | } | |
10620 | } | |
10621 | while (*args); | |
10622 | } | |
10623 | ||
10624 | struct breakpoint * | |
10625 | get_tracepoint (int num) | |
10626 | { | |
10627 | struct breakpoint *t; | |
10628 | ||
10629 | ALL_TRACEPOINTS (t) | |
10630 | if (t->number == num) | |
10631 | return t; | |
10632 | ||
10633 | return NULL; | |
10634 | } | |
10635 | ||
d5551862 SS |
10636 | /* Find the tracepoint with the given target-side number (which may be |
10637 | different from the tracepoint number after disconnecting and | |
10638 | reconnecting). */ | |
10639 | ||
10640 | struct breakpoint * | |
10641 | get_tracepoint_by_number_on_target (int num) | |
10642 | { | |
10643 | struct breakpoint *t; | |
10644 | ||
10645 | ALL_TRACEPOINTS (t) | |
10646 | if (t->number_on_target == num) | |
10647 | return t; | |
10648 | ||
10649 | return NULL; | |
10650 | } | |
10651 | ||
1042e4c0 SS |
10652 | /* Utility: parse a tracepoint number and look it up in the list. |
10653 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10654 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10655 | recent tracepoint (tracepoint_count) is returned. */ | |
10656 | struct breakpoint * | |
10657 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10658 | { | |
10659 | extern int tracepoint_count; | |
10660 | struct breakpoint *t; | |
10661 | int tpnum; | |
10662 | char *instring = arg == NULL ? NULL : *arg; | |
10663 | ||
10664 | if (arg == NULL || *arg == NULL || ! **arg) | |
10665 | { | |
10666 | if (optional_p) | |
10667 | tpnum = tracepoint_count; | |
10668 | else | |
10669 | error_no_arg (_("tracepoint number")); | |
10670 | } | |
10671 | else | |
10672 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10673 | ||
10674 | if (tpnum <= 0) | |
10675 | { | |
10676 | if (instring && *instring) | |
10677 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10678 | instring); | |
10679 | else | |
10680 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10681 | return NULL; | |
10682 | } | |
10683 | ||
10684 | ALL_TRACEPOINTS (t) | |
10685 | if (t->number == tpnum) | |
10686 | { | |
10687 | return t; | |
10688 | } | |
10689 | ||
10690 | /* FIXME: if we are in the middle of a range we don't want to give | |
10691 | a message. The current interface to get_number_or_range doesn't | |
10692 | allow us to discover this. */ | |
10693 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10694 | return NULL; | |
10695 | } | |
10696 | ||
6149aea9 PA |
10697 | /* Save information on user settable breakpoints (watchpoints, etc) to |
10698 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
10699 | on each breakpoint and only include the ones for which it returns | |
10700 | non-zero. */ | |
10701 | ||
1042e4c0 | 10702 | static void |
6149aea9 PA |
10703 | save_breakpoints (char *filename, int from_tty, |
10704 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
10705 | { |
10706 | struct breakpoint *tp; | |
6149aea9 | 10707 | int any = 0; |
a7bdde9e | 10708 | char *pathname; |
1042e4c0 | 10709 | struct cleanup *cleanup; |
a7bdde9e | 10710 | struct ui_file *fp; |
6149aea9 | 10711 | int extra_trace_bits = 0; |
1042e4c0 | 10712 | |
6149aea9 PA |
10713 | if (filename == 0 || *filename == 0) |
10714 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
10715 | |
10716 | /* See if we have anything to save. */ | |
6149aea9 | 10717 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 10718 | { |
6149aea9 PA |
10719 | /* Skip internal and momentary breakpoints. */ |
10720 | if (!user_settable_breakpoint (tp)) | |
10721 | continue; | |
10722 | ||
10723 | /* If we have a filter, only save the breakpoints it accepts. */ | |
10724 | if (filter && !filter (tp)) | |
10725 | continue; | |
10726 | ||
10727 | any = 1; | |
10728 | ||
10729 | if (is_tracepoint (tp)) | |
10730 | { | |
10731 | extra_trace_bits = 1; | |
10732 | ||
10733 | /* We can stop searching. */ | |
10734 | break; | |
10735 | } | |
1042e4c0 | 10736 | } |
6149aea9 PA |
10737 | |
10738 | if (!any) | |
1042e4c0 | 10739 | { |
6149aea9 | 10740 | warning (_("Nothing to save.")); |
1042e4c0 SS |
10741 | return; |
10742 | } | |
10743 | ||
6149aea9 | 10744 | pathname = tilde_expand (filename); |
1042e4c0 | 10745 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 10746 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 10747 | if (!fp) |
6149aea9 PA |
10748 | error (_("Unable to open file '%s' for saving (%s)"), |
10749 | filename, safe_strerror (errno)); | |
a7bdde9e | 10750 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 10751 | |
6149aea9 PA |
10752 | if (extra_trace_bits) |
10753 | save_trace_state_variables (fp); | |
8bf6485c | 10754 | |
6149aea9 | 10755 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 10756 | { |
6149aea9 PA |
10757 | /* Skip internal and momentary breakpoints. */ |
10758 | if (!user_settable_breakpoint (tp)) | |
10759 | continue; | |
8bf6485c | 10760 | |
6149aea9 PA |
10761 | /* If we have a filter, only save the breakpoints it accepts. */ |
10762 | if (filter && !filter (tp)) | |
10763 | continue; | |
10764 | ||
10765 | if (tp->ops != NULL) | |
10766 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
10767 | else |
10768 | { | |
6149aea9 PA |
10769 | if (tp->type == bp_fast_tracepoint) |
10770 | fprintf_unfiltered (fp, "ftrace"); | |
10771 | else if (tp->type == bp_tracepoint) | |
10772 | fprintf_unfiltered (fp, "trace"); | |
10773 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
10774 | fprintf_unfiltered (fp, "tbreak"); | |
10775 | else if (tp->type == bp_breakpoint) | |
10776 | fprintf_unfiltered (fp, "break"); | |
10777 | else if (tp->type == bp_hardware_breakpoint | |
10778 | && tp->disposition == disp_del) | |
10779 | fprintf_unfiltered (fp, "thbreak"); | |
10780 | else if (tp->type == bp_hardware_breakpoint) | |
10781 | fprintf_unfiltered (fp, "hbreak"); | |
10782 | else if (tp->type == bp_watchpoint) | |
10783 | fprintf_unfiltered (fp, "watch"); | |
10784 | else if (tp->type == bp_hardware_watchpoint) | |
10785 | fprintf_unfiltered (fp, "watch"); | |
10786 | else if (tp->type == bp_read_watchpoint) | |
10787 | fprintf_unfiltered (fp, "rwatch"); | |
10788 | else if (tp->type == bp_access_watchpoint) | |
10789 | fprintf_unfiltered (fp, "awatch"); | |
10790 | else | |
10791 | internal_error (__FILE__, __LINE__, | |
10792 | _("unhandled breakpoint type %d"), (int) tp->type); | |
10793 | ||
10794 | if (tp->exp_string) | |
10795 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
10796 | else if (tp->addr_string) | |
10797 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
10798 | else | |
10799 | { | |
10800 | char tmp[40]; | |
10801 | ||
10802 | sprintf_vma (tmp, tp->loc->address); | |
10803 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
10804 | } | |
1042e4c0 SS |
10805 | } |
10806 | ||
6149aea9 PA |
10807 | if (tp->thread != -1) |
10808 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
10809 | ||
10810 | if (tp->task != 0) | |
10811 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
10812 | |
10813 | fprintf_unfiltered (fp, "\n"); | |
10814 | ||
6149aea9 PA |
10815 | /* Note, we can't rely on tp->number for anything, as we can't |
10816 | assume the recreated breakpoint numbers will match. Use $bpnum | |
10817 | instead. */ | |
10818 | ||
10819 | if (tp->cond_string) | |
10820 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
10821 | ||
10822 | if (tp->ignore_count) | |
10823 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
10824 | ||
1042e4c0 | 10825 | if (tp->pass_count) |
a7bdde9e | 10826 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 10827 | |
a7bdde9e | 10828 | if (tp->commands) |
1042e4c0 | 10829 | { |
a7bdde9e VP |
10830 | volatile struct gdb_exception ex; |
10831 | ||
6149aea9 | 10832 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
10833 | |
10834 | ui_out_redirect (uiout, fp); | |
10835 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1042e4c0 | 10836 | { |
9add0f1b | 10837 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
10838 | } |
10839 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 10840 | |
a7bdde9e VP |
10841 | if (ex.reason < 0) |
10842 | throw_exception (ex); | |
1042e4c0 | 10843 | |
a7bdde9e | 10844 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 10845 | } |
6149aea9 PA |
10846 | |
10847 | if (tp->enable_state == bp_disabled) | |
10848 | fprintf_unfiltered (fp, "disable\n"); | |
10849 | ||
10850 | /* If this is a multi-location breakpoint, check if the locations | |
10851 | should be individually disabled. Watchpoint locations are | |
10852 | special, and not user visible. */ | |
10853 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
10854 | { | |
10855 | struct bp_location *loc; | |
10856 | int n = 1; | |
10857 | ||
10858 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
10859 | if (!loc->enabled) | |
10860 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
10861 | } | |
1042e4c0 | 10862 | } |
8bf6485c | 10863 | |
6149aea9 | 10864 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
10865 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
10866 | ||
1042e4c0 SS |
10867 | do_cleanups (cleanup); |
10868 | if (from_tty) | |
6149aea9 PA |
10869 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
10870 | } | |
10871 | ||
10872 | /* The `save breakpoints' command. */ | |
10873 | ||
10874 | static void | |
10875 | save_breakpoints_command (char *args, int from_tty) | |
10876 | { | |
10877 | save_breakpoints (args, from_tty, NULL); | |
10878 | } | |
10879 | ||
10880 | /* The `save tracepoints' command. */ | |
10881 | ||
10882 | static void | |
10883 | save_tracepoints_command (char *args, int from_tty) | |
10884 | { | |
10885 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
10886 | } |
10887 | ||
10888 | /* Create a vector of all tracepoints. */ | |
10889 | ||
10890 | VEC(breakpoint_p) * | |
10891 | all_tracepoints () | |
10892 | { | |
10893 | VEC(breakpoint_p) *tp_vec = 0; | |
10894 | struct breakpoint *tp; | |
10895 | ||
10896 | ALL_TRACEPOINTS (tp) | |
10897 | { | |
10898 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
10899 | } | |
10900 | ||
10901 | return tp_vec; | |
10902 | } | |
10903 | ||
c906108c | 10904 | \f |
31e2b00f AS |
10905 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
10906 | It is defined as a macro to prevent duplication. | |
10907 | COMMAND should be a string constant containing the name of the command. */ | |
10908 | #define BREAK_ARGS_HELP(command) \ | |
10909 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
10910 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
10911 | If a line number is specified, break at start of code for that line.\n\ | |
10912 | If a function is specified, break at start of code for that function.\n\ | |
10913 | If an address is specified, break at that exact address.\n\ | |
10914 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
10915 | This is useful for breaking on return to a stack frame.\n\ | |
10916 | \n\ | |
10917 | THREADNUM is the number from \"info threads\".\n\ | |
10918 | CONDITION is a boolean expression.\n\ | |
10919 | \n\ | |
10920 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
10921 | \n\ | |
10922 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
10923 | ||
44feb3ce TT |
10924 | /* List of subcommands for "catch". */ |
10925 | static struct cmd_list_element *catch_cmdlist; | |
10926 | ||
10927 | /* List of subcommands for "tcatch". */ | |
10928 | static struct cmd_list_element *tcatch_cmdlist; | |
10929 | ||
10930 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
10931 | lists, and pass some additional user data to the command function. */ | |
10932 | static void | |
10933 | add_catch_command (char *name, char *docstring, | |
10934 | void (*sfunc) (char *args, int from_tty, | |
10935 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
10936 | char **(*completer) (struct cmd_list_element *cmd, |
10937 | char *text, char *word), | |
44feb3ce TT |
10938 | void *user_data_catch, |
10939 | void *user_data_tcatch) | |
10940 | { | |
10941 | struct cmd_list_element *command; | |
10942 | ||
10943 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10944 | &catch_cmdlist); | |
10945 | set_cmd_sfunc (command, sfunc); | |
10946 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 10947 | set_cmd_completer (command, completer); |
44feb3ce TT |
10948 | |
10949 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10950 | &tcatch_cmdlist); | |
10951 | set_cmd_sfunc (command, sfunc); | |
10952 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 10953 | set_cmd_completer (command, completer); |
44feb3ce TT |
10954 | } |
10955 | ||
6c95b8df | 10956 | static void |
a79b8f6e | 10957 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 10958 | { |
6c95b8df PA |
10959 | inf->total_syscalls_count = 0; |
10960 | inf->any_syscall_count = 0; | |
10961 | VEC_free (int, inf->syscalls_counts); | |
10962 | } | |
10963 | ||
6149aea9 PA |
10964 | static void |
10965 | save_command (char *arg, int from_tty) | |
10966 | { | |
10967 | printf_unfiltered (_("\ | |
10968 | \"save\" must be followed by the name of a save subcommand.\n")); | |
10969 | help_list (save_cmdlist, "save ", -1, gdb_stdout); | |
10970 | } | |
10971 | ||
c906108c | 10972 | void |
fba45db2 | 10973 | _initialize_breakpoint (void) |
c906108c SS |
10974 | { |
10975 | struct cmd_list_element *c; | |
10976 | ||
84acb35a | 10977 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 10978 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 10979 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 10980 | |
c906108c SS |
10981 | breakpoint_chain = 0; |
10982 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
10983 | before a breakpoint is set. */ | |
10984 | breakpoint_count = 0; | |
10985 | ||
1042e4c0 SS |
10986 | tracepoint_count = 0; |
10987 | ||
1bedd215 AC |
10988 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
10989 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
10990 | Usage is `ignore N COUNT'.")); | |
c906108c | 10991 | if (xdb_commands) |
c5aa993b | 10992 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 10993 | |
1bedd215 AC |
10994 | add_com ("commands", class_breakpoint, commands_command, _("\ |
10995 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
10996 | Give breakpoint number as argument after \"commands\".\n\ |
10997 | With no argument, the targeted breakpoint is the last one set.\n\ | |
10998 | The commands themselves follow starting on the next line.\n\ | |
10999 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11000 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11001 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11002 | |
1bedd215 AC |
11003 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11004 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11005 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11006 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11007 | |
1bedd215 | 11008 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11009 | Set a temporary breakpoint.\n\ |
c906108c SS |
11010 | Like \"break\" except the breakpoint is only temporary,\n\ |
11011 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11012 | by using \"enable delete\" on the breakpoint number.\n\ |
11013 | \n" | |
11014 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11015 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11016 | |
1bedd215 | 11017 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11018 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11019 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11020 | some target hardware may not have this support.\n\ |
11021 | \n" | |
11022 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11023 | set_cmd_completer (c, location_completer); |
c906108c | 11024 | |
1bedd215 | 11025 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11026 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11027 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11028 | so it will be deleted when hit.\n\ |
11029 | \n" | |
11030 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11031 | set_cmd_completer (c, location_completer); |
c906108c | 11032 | |
1bedd215 AC |
11033 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11034 | Enable some breakpoints.\n\ | |
c906108c SS |
11035 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11036 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11037 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11038 | With a subcommand you can enable temporarily."), |
c906108c SS |
11039 | &enablelist, "enable ", 1, &cmdlist); |
11040 | if (xdb_commands) | |
1bedd215 AC |
11041 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11042 | Enable some breakpoints.\n\ | |
c906108c SS |
11043 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11044 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11045 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11046 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11047 | |
11048 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11049 | ||
1bedd215 AC |
11050 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
11051 | Enable some breakpoints.\n\ | |
c906108c SS |
11052 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11053 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11054 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11055 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11056 | |
1a966eab AC |
11057 | add_cmd ("once", no_class, enable_once_command, _("\ |
11058 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11059 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11060 | &enablebreaklist); |
11061 | ||
1a966eab AC |
11062 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11063 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11064 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11065 | &enablebreaklist); |
11066 | ||
1a966eab AC |
11067 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11068 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11069 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11070 | &enablelist); |
11071 | ||
1a966eab AC |
11072 | add_cmd ("once", no_class, enable_once_command, _("\ |
11073 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11074 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11075 | &enablelist); |
11076 | ||
1bedd215 AC |
11077 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
11078 | Disable some breakpoints.\n\ | |
c906108c SS |
11079 | Arguments are breakpoint numbers with spaces in between.\n\ |
11080 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11081 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
11082 | &disablelist, "disable ", 1, &cmdlist); |
11083 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
11084 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
11085 | if (xdb_commands) | |
1bedd215 AC |
11086 | add_com ("sb", class_breakpoint, disable_command, _("\ |
11087 | Disable some breakpoints.\n\ | |
c906108c SS |
11088 | Arguments are breakpoint numbers with spaces in between.\n\ |
11089 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11090 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 11091 | |
1a966eab AC |
11092 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
11093 | Disable some breakpoints.\n\ | |
c906108c SS |
11094 | Arguments are breakpoint numbers with spaces in between.\n\ |
11095 | To disable all breakpoints, give no argument.\n\ | |
11096 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 11097 | This command may be abbreviated \"disable\"."), |
c906108c SS |
11098 | &disablelist); |
11099 | ||
1bedd215 AC |
11100 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
11101 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11102 | Arguments are breakpoint numbers with spaces in between.\n\ |
11103 | To delete all breakpoints, give no argument.\n\ | |
11104 | \n\ | |
11105 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 11106 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
11107 | &deletelist, "delete ", 1, &cmdlist); |
11108 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 11109 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 11110 | if (xdb_commands) |
1bedd215 AC |
11111 | add_com ("db", class_breakpoint, delete_command, _("\ |
11112 | Delete some breakpoints.\n\ | |
c906108c | 11113 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 11114 | To delete all breakpoints, give no argument.\n")); |
c906108c | 11115 | |
1a966eab AC |
11116 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
11117 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11118 | Arguments are breakpoint numbers with spaces in between.\n\ |
11119 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 11120 | This command may be abbreviated \"delete\"."), |
c906108c SS |
11121 | &deletelist); |
11122 | ||
1bedd215 AC |
11123 | add_com ("clear", class_breakpoint, clear_command, _("\ |
11124 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
11125 | Argument may be line number, function name, or \"*\" and an address.\n\ |
11126 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
11127 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
11128 | If an address is specified, breakpoints at that address are cleared.\n\ |
11129 | \n\ | |
11130 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
11131 | is executing in.\n\ |
11132 | \n\ | |
1bedd215 | 11133 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 11134 | |
1bedd215 | 11135 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
11136 | Set breakpoint at specified line or function.\n" |
11137 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 11138 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11139 | |
c906108c SS |
11140 | add_com_alias ("b", "break", class_run, 1); |
11141 | add_com_alias ("br", "break", class_run, 1); | |
11142 | add_com_alias ("bre", "break", class_run, 1); | |
11143 | add_com_alias ("brea", "break", class_run, 1); | |
11144 | ||
7681d515 PM |
11145 | if (xdb_commands) |
11146 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
11147 | |
11148 | if (dbx_commands) | |
11149 | { | |
1bedd215 AC |
11150 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
11151 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
11152 | &stoplist, "stop ", 1, &cmdlist); |
11153 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 11154 | _("Break in function or address."), &stoplist); |
c5aa993b | 11155 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 11156 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
11157 | add_com ("status", class_info, breakpoints_info, _("\ |
11158 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11159 | The \"Type\" column indicates one of:\n\ |
11160 | \tbreakpoint - normal breakpoint\n\ | |
11161 | \twatchpoint - watchpoint\n\ | |
11162 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11163 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11164 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11165 | address and file/line number respectively.\n\ |
11166 | \n\ | |
11167 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11168 | are set to the address of the last breakpoint listed unless the command\n\ |
11169 | is prefixed with \"server \".\n\n\ | |
c906108c | 11170 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11171 | breakpoint set.")); |
c906108c SS |
11172 | } |
11173 | ||
1bedd215 AC |
11174 | add_info ("breakpoints", breakpoints_info, _("\ |
11175 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11176 | The \"Type\" column indicates one of:\n\ |
11177 | \tbreakpoint - normal breakpoint\n\ | |
11178 | \twatchpoint - watchpoint\n\ | |
11179 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11180 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11181 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11182 | address and file/line number respectively.\n\ |
11183 | \n\ | |
11184 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11185 | are set to the address of the last breakpoint listed unless the command\n\ |
11186 | is prefixed with \"server \".\n\n\ | |
c906108c | 11187 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11188 | breakpoint set.")); |
c906108c | 11189 | |
6b04bdb7 MS |
11190 | add_info_alias ("b", "breakpoints", 1); |
11191 | ||
c906108c | 11192 | if (xdb_commands) |
1bedd215 AC |
11193 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
11194 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11195 | The \"Type\" column indicates one of:\n\ |
11196 | \tbreakpoint - normal breakpoint\n\ | |
11197 | \twatchpoint - watchpoint\n\ | |
11198 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11199 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11200 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11201 | address and file/line number respectively.\n\ |
11202 | \n\ | |
11203 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11204 | are set to the address of the last breakpoint listed unless the command\n\ |
11205 | is prefixed with \"server \".\n\n\ | |
c906108c | 11206 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11207 | breakpoint set.")); |
c906108c | 11208 | |
1a966eab AC |
11209 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
11210 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11211 | The \"Type\" column indicates one of:\n\ |
11212 | \tbreakpoint - normal breakpoint\n\ | |
11213 | \twatchpoint - watchpoint\n\ | |
11214 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
11215 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
11216 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
11217 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
11218 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
11219 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
11220 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
11221 | address and file/line number respectively.\n\ |
11222 | \n\ | |
11223 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11224 | are set to the address of the last breakpoint listed unless the command\n\ |
11225 | is prefixed with \"server \".\n\n\ | |
c906108c | 11226 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 11227 | breakpoint set."), |
c906108c SS |
11228 | &maintenanceinfolist); |
11229 | ||
44feb3ce TT |
11230 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
11231 | Set catchpoints to catch events."), | |
11232 | &catch_cmdlist, "catch ", | |
11233 | 0/*allow-unknown*/, &cmdlist); | |
11234 | ||
11235 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
11236 | Set temporary catchpoints to catch events."), | |
11237 | &tcatch_cmdlist, "tcatch ", | |
11238 | 0/*allow-unknown*/, &cmdlist); | |
11239 | ||
11240 | /* Add catch and tcatch sub-commands. */ | |
11241 | add_catch_command ("catch", _("\ | |
11242 | Catch an exception, when caught.\n\ | |
11243 | With an argument, catch only exceptions with the given name."), | |
11244 | catch_catch_command, | |
a96d9b2e | 11245 | NULL, |
44feb3ce TT |
11246 | CATCH_PERMANENT, |
11247 | CATCH_TEMPORARY); | |
11248 | add_catch_command ("throw", _("\ | |
11249 | Catch an exception, when thrown.\n\ | |
11250 | With an argument, catch only exceptions with the given name."), | |
11251 | catch_throw_command, | |
a96d9b2e | 11252 | NULL, |
44feb3ce TT |
11253 | CATCH_PERMANENT, |
11254 | CATCH_TEMPORARY); | |
11255 | add_catch_command ("fork", _("Catch calls to fork."), | |
11256 | catch_fork_command_1, | |
a96d9b2e | 11257 | NULL, |
44feb3ce TT |
11258 | (void *) (uintptr_t) catch_fork_permanent, |
11259 | (void *) (uintptr_t) catch_fork_temporary); | |
11260 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
11261 | catch_fork_command_1, | |
a96d9b2e | 11262 | NULL, |
44feb3ce TT |
11263 | (void *) (uintptr_t) catch_vfork_permanent, |
11264 | (void *) (uintptr_t) catch_vfork_temporary); | |
11265 | add_catch_command ("exec", _("Catch calls to exec."), | |
11266 | catch_exec_command_1, | |
a96d9b2e SDJ |
11267 | NULL, |
11268 | CATCH_PERMANENT, | |
11269 | CATCH_TEMPORARY); | |
11270 | add_catch_command ("syscall", _("\ | |
11271 | Catch system calls by their names and/or numbers.\n\ | |
11272 | Arguments say which system calls to catch. If no arguments\n\ | |
11273 | are given, every system call will be caught.\n\ | |
11274 | Arguments, if given, should be one or more system call names\n\ | |
11275 | (if your system supports that), or system call numbers."), | |
11276 | catch_syscall_command_1, | |
11277 | catch_syscall_completer, | |
44feb3ce TT |
11278 | CATCH_PERMANENT, |
11279 | CATCH_TEMPORARY); | |
44feb3ce TT |
11280 | add_catch_command ("exception", _("\ |
11281 | Catch Ada exceptions, when raised.\n\ | |
11282 | With an argument, catch only exceptions with the given name."), | |
11283 | catch_ada_exception_command, | |
a96d9b2e | 11284 | NULL, |
44feb3ce TT |
11285 | CATCH_PERMANENT, |
11286 | CATCH_TEMPORARY); | |
11287 | add_catch_command ("assert", _("\ | |
11288 | Catch failed Ada assertions, when raised.\n\ | |
11289 | With an argument, catch only exceptions with the given name."), | |
11290 | catch_assert_command, | |
a96d9b2e | 11291 | NULL, |
44feb3ce TT |
11292 | CATCH_PERMANENT, |
11293 | CATCH_TEMPORARY); | |
c5aa993b | 11294 | |
1bedd215 AC |
11295 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
11296 | Set a watchpoint for an expression.\n\ | |
c906108c | 11297 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11298 | an expression changes.")); |
65d12d83 | 11299 | set_cmd_completer (c, expression_completer); |
c906108c | 11300 | |
1bedd215 AC |
11301 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
11302 | Set a read watchpoint for an expression.\n\ | |
c906108c | 11303 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11304 | an expression is read.")); |
65d12d83 | 11305 | set_cmd_completer (c, expression_completer); |
c906108c | 11306 | |
1bedd215 AC |
11307 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
11308 | Set a watchpoint for an expression.\n\ | |
c906108c | 11309 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11310 | an expression is either read or written.")); |
65d12d83 | 11311 | set_cmd_completer (c, expression_completer); |
c906108c | 11312 | |
d77f58be SS |
11313 | add_info ("watchpoints", watchpoints_info, _("\ |
11314 | Status of watchpoints, or watchpoint number NUMBER.")); | |
11315 | ||
c906108c SS |
11316 | |
11317 | ||
920d2a44 AC |
11318 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
11319 | respond to changes - contrary to the description. */ | |
85c07804 AC |
11320 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
11321 | &can_use_hw_watchpoints, _("\ | |
11322 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
11323 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
11324 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
11325 | such is available. (However, any hardware watchpoints that were\n\ | |
11326 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
11327 | hardware.)"), |
11328 | NULL, | |
920d2a44 | 11329 | show_can_use_hw_watchpoints, |
85c07804 | 11330 | &setlist, &showlist); |
c906108c SS |
11331 | |
11332 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 11333 | |
1042e4c0 SS |
11334 | /* Tracepoint manipulation commands. */ |
11335 | ||
11336 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
11337 | Set a tracepoint at specified line or function.\n\ | |
11338 | \n" | |
11339 | BREAK_ARGS_HELP ("trace") "\n\ | |
11340 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11341 | set_cmd_completer (c, location_completer); | |
11342 | ||
11343 | add_com_alias ("tp", "trace", class_alias, 0); | |
11344 | add_com_alias ("tr", "trace", class_alias, 1); | |
11345 | add_com_alias ("tra", "trace", class_alias, 1); | |
11346 | add_com_alias ("trac", "trace", class_alias, 1); | |
11347 | ||
7a697b8d SS |
11348 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
11349 | Set a fast tracepoint at specified line or function.\n\ | |
11350 | \n" | |
11351 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
11352 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11353 | set_cmd_completer (c, location_completer); | |
11354 | ||
1042e4c0 SS |
11355 | add_info ("tracepoints", tracepoints_info, _("\ |
11356 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
11357 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
11358 | last tracepoint set.")); | |
11359 | ||
11360 | add_info_alias ("tp", "tracepoints", 1); | |
11361 | ||
11362 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
11363 | Delete specified tracepoints.\n\ | |
11364 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11365 | No argument means delete all tracepoints."), | |
11366 | &deletelist); | |
11367 | ||
11368 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
11369 | Disable specified tracepoints.\n\ | |
11370 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11371 | No argument means disable all tracepoints."), | |
11372 | &disablelist); | |
11373 | deprecate_cmd (c, "disable"); | |
11374 | ||
11375 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
11376 | Enable specified tracepoints.\n\ | |
11377 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11378 | No argument means enable all tracepoints."), | |
11379 | &enablelist); | |
11380 | deprecate_cmd (c, "enable"); | |
11381 | ||
11382 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
11383 | Set the passcount for a tracepoint.\n\ | |
11384 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
11385 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
11386 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
11387 | ||
6149aea9 PA |
11388 | add_prefix_cmd ("save", class_breakpoint, save_command, |
11389 | _("Save breakpoint definitions as a script."), | |
11390 | &save_cmdlist, "save ", | |
11391 | 0/*allow-unknown*/, &cmdlist); | |
11392 | ||
11393 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
11394 | Save current breakpoint definitions as a script.\n\ | |
11395 | This includes all types of breakpoints (breakpoints, watchpoints, \n\ | |
11396 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ | |
11397 | session to restore them."), | |
11398 | &save_cmdlist); | |
11399 | set_cmd_completer (c, filename_completer); | |
11400 | ||
11401 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 11402 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
11403 | Use the 'source' command in another debug session to restore them."), |
11404 | &save_cmdlist); | |
1042e4c0 SS |
11405 | set_cmd_completer (c, filename_completer); |
11406 | ||
6149aea9 PA |
11407 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
11408 | deprecate_cmd (c, "save tracepoints"); | |
11409 | ||
1bedd215 | 11410 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11411 | Breakpoint specific settings\n\ |
11412 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11413 | pending breakpoint behavior"), |
fa8d40ab JJ |
11414 | &breakpoint_set_cmdlist, "set breakpoint ", |
11415 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 11416 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11417 | Breakpoint specific settings\n\ |
11418 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11419 | pending breakpoint behavior"), |
fa8d40ab JJ |
11420 | &breakpoint_show_cmdlist, "show breakpoint ", |
11421 | 0/*allow-unknown*/, &showlist); | |
11422 | ||
7915a72c AC |
11423 | add_setshow_auto_boolean_cmd ("pending", no_class, |
11424 | &pending_break_support, _("\ | |
11425 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
11426 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
11427 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
11428 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
11429 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 11430 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 11431 | NULL, |
920d2a44 | 11432 | show_pending_break_support, |
6e1d7d6c AC |
11433 | &breakpoint_set_cmdlist, |
11434 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
11435 | |
11436 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
11437 | |
11438 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
11439 | &automatic_hardware_breakpoints, _("\ | |
11440 | Set automatic usage of hardware breakpoints."), _("\ | |
11441 | Show automatic usage of hardware breakpoints."), _("\ | |
11442 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
11443 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
11444 | a warning will be emitted for such breakpoints."), | |
11445 | NULL, | |
11446 | show_automatic_hardware_breakpoints, | |
11447 | &breakpoint_set_cmdlist, | |
11448 | &breakpoint_show_cmdlist); | |
74960c60 | 11449 | |
33e5cbd6 PA |
11450 | add_setshow_enum_cmd ("always-inserted", class_support, |
11451 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
11452 | Set mode for inserting breakpoints."), _("\ |
11453 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
11454 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
11455 | resumed, and removed when execution stops. When this mode is on,\n\ | |
11456 | breakpoints are inserted immediately and removed only when the user\n\ | |
11457 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
11458 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
11459 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
11460 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
11461 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
11462 | NULL, |
11463 | &show_always_inserted_mode, | |
11464 | &breakpoint_set_cmdlist, | |
11465 | &breakpoint_show_cmdlist); | |
765dc015 VP |
11466 | |
11467 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
11468 | |
11469 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 11470 | } |