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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" |
65d79d4b | 64 | #include "parser-defs.h" |
c906108c | 65 | |
1042e4c0 SS |
66 | /* readline include files */ |
67 | #include "readline/readline.h" | |
68 | #include "readline/history.h" | |
69 | ||
70 | /* readline defines this. */ | |
71 | #undef savestring | |
72 | ||
034dad6f | 73 | #include "mi/mi-common.h" |
104c1213 | 74 | |
44feb3ce TT |
75 | /* Arguments to pass as context to some catch command handlers. */ |
76 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
77 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 78 | |
44feb3ce | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
a14ed312 | 97 | static void clear_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void catch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 102 | |
98deb0da | 103 | static void break_command_1 (char *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void mention (struct breakpoint *); |
c906108c | 106 | |
63c252f8 PM |
107 | /* This function is used in gdbtk sources and thus can not be made static. */ |
108 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
109 | struct symtab_and_line, |
110 | enum bptype); | |
c906108c | 111 | |
76897487 KB |
112 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
113 | ||
a6d9a66e UW |
114 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
115 | CORE_ADDR bpaddr, | |
88f7da05 | 116 | enum bptype bptype); |
76897487 | 117 | |
6c95b8df PA |
118 | static void describe_other_breakpoints (struct gdbarch *, |
119 | struct program_space *, CORE_ADDR, | |
5af949e3 | 120 | struct obj_section *, int); |
c906108c | 121 | |
6c95b8df PA |
122 | static int breakpoint_address_match (struct address_space *aspace1, |
123 | CORE_ADDR addr1, | |
124 | struct address_space *aspace2, | |
125 | CORE_ADDR addr2); | |
126 | ||
85d721b8 PA |
127 | static int watchpoint_locations_match (struct bp_location *loc1, |
128 | struct bp_location *loc2); | |
129 | ||
a14ed312 | 130 | static void breakpoints_info (char *, int); |
c906108c | 131 | |
d77f58be SS |
132 | static void watchpoints_info (char *, int); |
133 | ||
134 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 135 | |
4efb68b1 | 136 | static int breakpoint_cond_eval (void *); |
c906108c | 137 | |
4efb68b1 | 138 | static void cleanup_executing_breakpoints (void *); |
c906108c | 139 | |
a14ed312 | 140 | static void commands_command (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static void condition_command (char *, int); |
c906108c | 143 | |
a14ed312 | 144 | static int get_number_trailer (char **, int); |
c906108c | 145 | |
c5aa993b JM |
146 | typedef enum |
147 | { | |
148 | mark_inserted, | |
149 | mark_uninserted | |
150 | } | |
151 | insertion_state_t; | |
c906108c | 152 | |
0bde7532 | 153 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 154 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 155 | |
a14ed312 | 156 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
157 | |
158 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 159 | |
4efb68b1 | 160 | static int watchpoint_check (void *); |
c906108c | 161 | |
a14ed312 | 162 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static int hw_breakpoint_used_count (void); |
c906108c | 165 | |
a14ed312 | 166 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 167 | |
a14ed312 | 168 | static void hbreak_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static void thbreak_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 173 | |
a14ed312 | 174 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 175 | |
a14ed312 | 176 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 177 | |
a14ed312 | 178 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 179 | |
a14ed312 | 180 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 181 | |
d85310f7 MS |
182 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
183 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 184 | |
a14ed312 | 185 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 188 | |
d03285ec UW |
189 | static void detach_single_step_breakpoints (void); |
190 | ||
6c95b8df PA |
191 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
192 | CORE_ADDR pc); | |
1aafd4da | 193 | |
fe3f5fa8 | 194 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
195 | static void incref_bp_location (struct bp_location *loc); |
196 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 197 | |
39d61571 | 198 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 199 | |
b60e7edf | 200 | static void update_global_location_list (int); |
a5606eee | 201 | |
b60e7edf | 202 | static void update_global_location_list_nothrow (int); |
74960c60 | 203 | |
d77f58be | 204 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 205 | |
d77f58be | 206 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 207 | |
74960c60 | 208 | static void insert_breakpoint_locations (void); |
a5606eee | 209 | |
a96d9b2e SDJ |
210 | static int syscall_catchpoint_p (struct breakpoint *b); |
211 | ||
1042e4c0 SS |
212 | static void tracepoints_info (char *, int); |
213 | ||
214 | static void delete_trace_command (char *, int); | |
215 | ||
216 | static void enable_trace_command (char *, int); | |
217 | ||
218 | static void disable_trace_command (char *, int); | |
219 | ||
220 | static void trace_pass_command (char *, int); | |
221 | ||
0fb4aa4b PA |
222 | /* Assuming we're creating a static tracepoint, does S look like a |
223 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
224 | #define is_marker_spec(s) \ | |
f5a8e22b | 225 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 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. */ | |
bc043ef3 | 254 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 255 | |
2cec12e5 AR |
256 | return bpdisps[(int) disp]; |
257 | } | |
c906108c | 258 | |
2cec12e5 | 259 | /* Prototypes for exported functions. */ |
c906108c SS |
260 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
261 | if such is available. */ | |
262 | static int can_use_hw_watchpoints; | |
263 | ||
920d2a44 AC |
264 | static void |
265 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
266 | struct cmd_list_element *c, | |
267 | const char *value) | |
268 | { | |
269 | fprintf_filtered (file, _("\ | |
270 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
271 | value); | |
272 | } | |
273 | ||
fa8d40ab JJ |
274 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
275 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
276 | for unrecognized breakpoint locations. | |
277 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
278 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
279 | static void |
280 | show_pending_break_support (struct ui_file *file, int from_tty, | |
281 | struct cmd_list_element *c, | |
282 | const char *value) | |
283 | { | |
284 | fprintf_filtered (file, _("\ | |
285 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
286 | value); | |
287 | } | |
fa8d40ab | 288 | |
765dc015 VP |
289 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
290 | set with "break" but falling in read-only memory. | |
291 | If 0, gdb will warn about such breakpoints, but won't automatically | |
292 | use hardware breakpoints. */ | |
293 | static int automatic_hardware_breakpoints; | |
294 | static void | |
295 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
296 | struct cmd_list_element *c, | |
297 | const char *value) | |
298 | { | |
299 | fprintf_filtered (file, _("\ | |
300 | Automatic usage of hardware breakpoints is %s.\n"), | |
301 | value); | |
302 | } | |
303 | ||
33e5cbd6 PA |
304 | /* If on, gdb will keep breakpoints inserted even as inferior is |
305 | stopped, and immediately insert any new breakpoints. If off, gdb | |
306 | will insert breakpoints into inferior only when resuming it, and | |
307 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
308 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
309 | ||
310 | static const char always_inserted_auto[] = "auto"; | |
311 | static const char always_inserted_on[] = "on"; | |
312 | static const char always_inserted_off[] = "off"; | |
313 | static const char *always_inserted_enums[] = { | |
314 | always_inserted_auto, | |
315 | always_inserted_off, | |
316 | always_inserted_on, | |
317 | NULL | |
318 | }; | |
319 | static const char *always_inserted_mode = always_inserted_auto; | |
320 | static void | |
74960c60 | 321 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 322 | struct cmd_list_element *c, const char *value) |
74960c60 | 323 | { |
33e5cbd6 PA |
324 | if (always_inserted_mode == always_inserted_auto) |
325 | fprintf_filtered (file, _("\ | |
326 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
327 | value, | |
328 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
329 | else | |
330 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
331 | } |
332 | ||
33e5cbd6 PA |
333 | int |
334 | breakpoints_always_inserted_mode (void) | |
335 | { | |
336 | return (always_inserted_mode == always_inserted_on | |
337 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
338 | } | |
765dc015 | 339 | |
a14ed312 | 340 | void _initialize_breakpoint (void); |
c906108c | 341 | |
c906108c SS |
342 | /* Are we executing breakpoint commands? */ |
343 | static int executing_breakpoint_commands; | |
344 | ||
c02f5703 MS |
345 | /* Are overlay event breakpoints enabled? */ |
346 | static int overlay_events_enabled; | |
347 | ||
c906108c SS |
348 | /* Walk the following statement or block through all breakpoints. |
349 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
350 | breakpoint. */ | |
351 | ||
5c44784c | 352 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 353 | |
5c44784c JM |
354 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
355 | for (B = breakpoint_chain; \ | |
356 | B ? (TMP=B->next, 1): 0; \ | |
357 | B = TMP) | |
c906108c | 358 | |
876fa593 JK |
359 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
360 | provided so update_global_location_list must not be called while executing | |
361 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 362 | |
876fa593 JK |
363 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
364 | for (BP_TMP = bp_location; \ | |
365 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
366 | BP_TMP++) | |
7cc221ef | 367 | |
1042e4c0 SS |
368 | /* Iterator for tracepoints only. */ |
369 | ||
370 | #define ALL_TRACEPOINTS(B) \ | |
371 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 372 | if (is_tracepoint (B)) |
1042e4c0 | 373 | |
7cc221ef | 374 | /* Chains of all breakpoints defined. */ |
c906108c SS |
375 | |
376 | struct breakpoint *breakpoint_chain; | |
377 | ||
876fa593 JK |
378 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
379 | ||
380 | static struct bp_location **bp_location; | |
381 | ||
382 | /* Number of elements of BP_LOCATION. */ | |
383 | ||
384 | static unsigned bp_location_count; | |
385 | ||
386 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
387 | for the current elements of BP_LOCATION which get a valid result from | |
388 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
389 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
390 | ||
391 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
392 | ||
393 | /* Maximum offset plus alignment between | |
394 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
395 | the current elements of BP_LOCATION which get a valid result from | |
396 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
397 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
398 | ||
399 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 400 | |
20874c92 | 401 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 402 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
403 | may still be reported by a target. */ |
404 | VEC(bp_location_p) *moribund_locations = NULL; | |
405 | ||
c906108c SS |
406 | /* Number of last breakpoint made. */ |
407 | ||
95a42b64 TT |
408 | static int breakpoint_count; |
409 | ||
86b17b60 PA |
410 | /* The value of `breakpoint_count' before the last command that |
411 | created breakpoints. If the last (break-like) command created more | |
412 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
413 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
414 | static int prev_breakpoint_count; | |
c906108c | 415 | |
1042e4c0 SS |
416 | /* Number of last tracepoint made. */ |
417 | ||
95a42b64 | 418 | static int tracepoint_count; |
1042e4c0 | 419 | |
6149aea9 PA |
420 | static struct cmd_list_element *breakpoint_set_cmdlist; |
421 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 422 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 423 | |
468d015d JJ |
424 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
425 | static int | |
426 | breakpoint_enabled (struct breakpoint *b) | |
427 | { | |
0d381245 | 428 | return (b->enable_state == bp_enabled); |
468d015d JJ |
429 | } |
430 | ||
c906108c SS |
431 | /* Set breakpoint count to NUM. */ |
432 | ||
95a42b64 | 433 | static void |
fba45db2 | 434 | set_breakpoint_count (int num) |
c906108c | 435 | { |
86b17b60 | 436 | prev_breakpoint_count = breakpoint_count; |
c906108c | 437 | breakpoint_count = num; |
4fa62494 | 438 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
439 | } |
440 | ||
86b17b60 PA |
441 | /* Used by `start_rbreak_breakpoints' below, to record the current |
442 | breakpoint count before "rbreak" creates any breakpoint. */ | |
443 | static int rbreak_start_breakpoint_count; | |
444 | ||
95a42b64 TT |
445 | /* Called at the start an "rbreak" command to record the first |
446 | breakpoint made. */ | |
86b17b60 | 447 | |
95a42b64 TT |
448 | void |
449 | start_rbreak_breakpoints (void) | |
450 | { | |
86b17b60 | 451 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
452 | } |
453 | ||
454 | /* Called at the end of an "rbreak" command to record the last | |
455 | breakpoint made. */ | |
86b17b60 | 456 | |
95a42b64 TT |
457 | void |
458 | end_rbreak_breakpoints (void) | |
459 | { | |
86b17b60 | 460 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
461 | } |
462 | ||
c906108c SS |
463 | /* Used in run_command to zero the hit count when a new run starts. */ |
464 | ||
465 | void | |
fba45db2 | 466 | clear_breakpoint_hit_counts (void) |
c906108c SS |
467 | { |
468 | struct breakpoint *b; | |
469 | ||
470 | ALL_BREAKPOINTS (b) | |
471 | b->hit_count = 0; | |
472 | } | |
473 | ||
9add0f1b TT |
474 | /* Allocate a new counted_command_line with reference count of 1. |
475 | The new structure owns COMMANDS. */ | |
476 | ||
477 | static struct counted_command_line * | |
478 | alloc_counted_command_line (struct command_line *commands) | |
479 | { | |
480 | struct counted_command_line *result | |
481 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 482 | |
9add0f1b TT |
483 | result->refc = 1; |
484 | result->commands = commands; | |
485 | return result; | |
486 | } | |
487 | ||
488 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
489 | ||
490 | static void | |
491 | incref_counted_command_line (struct counted_command_line *cmd) | |
492 | { | |
493 | if (cmd) | |
494 | ++cmd->refc; | |
495 | } | |
496 | ||
497 | /* Decrement reference count. If the reference count reaches 0, | |
498 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
499 | nothing if *CMDP is NULL. */ | |
500 | ||
501 | static void | |
502 | decref_counted_command_line (struct counted_command_line **cmdp) | |
503 | { | |
504 | if (*cmdp) | |
505 | { | |
506 | if (--(*cmdp)->refc == 0) | |
507 | { | |
508 | free_command_lines (&(*cmdp)->commands); | |
509 | xfree (*cmdp); | |
510 | } | |
511 | *cmdp = NULL; | |
512 | } | |
513 | } | |
514 | ||
515 | /* A cleanup function that calls decref_counted_command_line. */ | |
516 | ||
517 | static void | |
518 | do_cleanup_counted_command_line (void *arg) | |
519 | { | |
520 | decref_counted_command_line (arg); | |
521 | } | |
522 | ||
523 | /* Create a cleanup that calls decref_counted_command_line on the | |
524 | argument. */ | |
525 | ||
526 | static struct cleanup * | |
527 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
528 | { | |
529 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
530 | } | |
531 | ||
c906108c SS |
532 | /* Default address, symtab and line to put a breakpoint at |
533 | for "break" command with no arg. | |
534 | if default_breakpoint_valid is zero, the other three are | |
535 | not valid, and "break" with no arg is an error. | |
536 | ||
537 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
538 | ||
539 | int default_breakpoint_valid; | |
540 | CORE_ADDR default_breakpoint_address; | |
541 | struct symtab *default_breakpoint_symtab; | |
542 | int default_breakpoint_line; | |
6c95b8df PA |
543 | struct program_space *default_breakpoint_pspace; |
544 | ||
c906108c SS |
545 | \f |
546 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
547 | Advance *PP after the string and any trailing whitespace. | |
548 | ||
549 | Currently the string can either be a number or "$" followed by the name | |
550 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 551 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
552 | |
553 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
554 | |
555 | TRAILER is a character which can be found after the number; most | |
556 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 557 | static int |
fba45db2 | 558 | get_number_trailer (char **pp, int trailer) |
c906108c | 559 | { |
5c44784c | 560 | int retval = 0; /* default */ |
c906108c SS |
561 | char *p = *pp; |
562 | ||
563 | if (p == NULL) | |
564 | /* Empty line means refer to the last breakpoint. */ | |
565 | return breakpoint_count; | |
566 | else if (*p == '$') | |
567 | { | |
568 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 569 | to pass to lookup_internalvar(). */ |
c906108c SS |
570 | char *varname; |
571 | char *start = ++p; | |
4fa62494 | 572 | LONGEST val; |
c906108c SS |
573 | |
574 | while (isalnum (*p) || *p == '_') | |
575 | p++; | |
576 | varname = (char *) alloca (p - start + 1); | |
577 | strncpy (varname, start, p - start); | |
578 | varname[p - start] = '\0'; | |
4fa62494 UW |
579 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
580 | retval = (int) val; | |
5c44784c JM |
581 | else |
582 | { | |
a3f17187 | 583 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
584 | retval = 0; |
585 | } | |
c906108c SS |
586 | } |
587 | else | |
588 | { | |
589 | if (*p == '-') | |
590 | ++p; | |
591 | while (*p >= '0' && *p <= '9') | |
592 | ++p; | |
593 | if (p == *pp) | |
594 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
595 | { |
596 | /* Skip non-numeric token */ | |
597 | while (*p && !isspace((int) *p)) | |
598 | ++p; | |
599 | /* Return zero, which caller must interpret as error. */ | |
600 | retval = 0; | |
601 | } | |
602 | else | |
603 | retval = atoi (*pp); | |
604 | } | |
605 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
606 | { | |
607 | /* Trailing junk: return 0 and let caller print error msg. */ | |
608 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
609 | ++p; | |
610 | retval = 0; | |
c906108c | 611 | } |
c906108c SS |
612 | while (isspace (*p)) |
613 | p++; | |
614 | *pp = p; | |
615 | return retval; | |
616 | } | |
5c44784c | 617 | |
11cf8741 | 618 | |
5c44784c JM |
619 | /* Like get_number_trailer, but don't allow a trailer. */ |
620 | int | |
fba45db2 | 621 | get_number (char **pp) |
5c44784c JM |
622 | { |
623 | return get_number_trailer (pp, '\0'); | |
624 | } | |
625 | ||
626 | /* Parse a number or a range. | |
627 | * A number will be of the form handled by get_number. | |
628 | * A range will be of the form <number1> - <number2>, and | |
629 | * will represent all the integers between number1 and number2, | |
630 | * inclusive. | |
631 | * | |
632 | * While processing a range, this fuction is called iteratively; | |
633 | * At each call it will return the next value in the range. | |
634 | * | |
635 | * At the beginning of parsing a range, the char pointer PP will | |
636 | * be advanced past <number1> and left pointing at the '-' token. | |
637 | * Subsequent calls will not advance the pointer until the range | |
638 | * is completed. The call that completes the range will advance | |
639 | * pointer PP past <number2>. | |
640 | */ | |
641 | ||
642 | int | |
fba45db2 | 643 | get_number_or_range (char **pp) |
5c44784c JM |
644 | { |
645 | static int last_retval, end_value; | |
646 | static char *end_ptr; | |
647 | static int in_range = 0; | |
648 | ||
649 | if (**pp != '-') | |
650 | { | |
651 | /* Default case: pp is pointing either to a solo number, | |
652 | or to the first number of a range. */ | |
653 | last_retval = get_number_trailer (pp, '-'); | |
654 | if (**pp == '-') | |
655 | { | |
656 | char **temp; | |
657 | ||
658 | /* This is the start of a range (<number1> - <number2>). | |
659 | Skip the '-', parse and remember the second number, | |
660 | and also remember the end of the final token. */ | |
661 | ||
662 | temp = &end_ptr; | |
663 | end_ptr = *pp + 1; | |
664 | while (isspace ((int) *end_ptr)) | |
665 | end_ptr++; /* skip white space */ | |
666 | end_value = get_number (temp); | |
667 | if (end_value < last_retval) | |
668 | { | |
8a3fe4f8 | 669 | error (_("inverted range")); |
5c44784c JM |
670 | } |
671 | else if (end_value == last_retval) | |
672 | { | |
673 | /* degenerate range (number1 == number2). Advance the | |
674 | token pointer so that the range will be treated as a | |
675 | single number. */ | |
676 | *pp = end_ptr; | |
677 | } | |
678 | else | |
679 | in_range = 1; | |
680 | } | |
681 | } | |
682 | else if (! in_range) | |
8a3fe4f8 | 683 | error (_("negative value")); |
5c44784c JM |
684 | else |
685 | { | |
686 | /* pp points to the '-' that betokens a range. All | |
687 | number-parsing has already been done. Return the next | |
688 | integer value (one greater than the saved previous value). | |
689 | Do not advance the token pointer 'pp' until the end of range | |
690 | is reached. */ | |
691 | ||
692 | if (++last_retval == end_value) | |
693 | { | |
694 | /* End of range reached; advance token pointer. */ | |
695 | *pp = end_ptr; | |
696 | in_range = 0; | |
697 | } | |
698 | } | |
699 | return last_retval; | |
700 | } | |
701 | ||
48cb2d85 VP |
702 | /* Return the breakpoint with the specified number, or NULL |
703 | if the number does not refer to an existing breakpoint. */ | |
704 | ||
705 | struct breakpoint * | |
706 | get_breakpoint (int num) | |
707 | { | |
708 | struct breakpoint *b; | |
709 | ||
710 | ALL_BREAKPOINTS (b) | |
711 | if (b->number == num) | |
712 | return b; | |
713 | ||
714 | return NULL; | |
715 | } | |
5c44784c | 716 | |
c906108c | 717 | \f |
adc36818 PM |
718 | |
719 | void | |
720 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
721 | int from_tty) | |
722 | { | |
723 | struct bp_location *loc = b->loc; | |
724 | ||
725 | for (; loc; loc = loc->next) | |
726 | { | |
727 | xfree (loc->cond); | |
728 | loc->cond = NULL; | |
729 | } | |
730 | xfree (b->cond_string); | |
731 | b->cond_string = NULL; | |
732 | xfree (b->cond_exp); | |
733 | b->cond_exp = NULL; | |
734 | ||
735 | if (*exp == 0) | |
736 | { | |
737 | if (from_tty) | |
738 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
739 | } | |
740 | else | |
741 | { | |
742 | char *arg = exp; | |
cc59ec59 | 743 | |
adc36818 PM |
744 | /* I don't know if it matters whether this is the string the user |
745 | typed in or the decompiled expression. */ | |
746 | b->cond_string = xstrdup (arg); | |
747 | b->condition_not_parsed = 0; | |
748 | ||
749 | if (is_watchpoint (b)) | |
750 | { | |
751 | innermost_block = NULL; | |
752 | arg = exp; | |
753 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
754 | if (*arg) | |
755 | error (_("Junk at end of expression")); | |
756 | b->cond_exp_valid_block = innermost_block; | |
757 | } | |
758 | else | |
759 | { | |
760 | for (loc = b->loc; loc; loc = loc->next) | |
761 | { | |
762 | arg = exp; | |
763 | loc->cond = | |
764 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
765 | if (*arg) | |
766 | error (_("Junk at end of expression")); | |
767 | } | |
768 | } | |
769 | } | |
770 | breakpoints_changed (); | |
771 | observer_notify_breakpoint_modified (b->number); | |
772 | } | |
773 | ||
c906108c SS |
774 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
775 | ||
776 | static void | |
fba45db2 | 777 | condition_command (char *arg, int from_tty) |
c906108c | 778 | { |
52f0bd74 | 779 | struct breakpoint *b; |
c906108c | 780 | char *p; |
52f0bd74 | 781 | int bnum; |
c906108c SS |
782 | |
783 | if (arg == 0) | |
e2e0b3e5 | 784 | error_no_arg (_("breakpoint number")); |
c906108c SS |
785 | |
786 | p = arg; | |
787 | bnum = get_number (&p); | |
5c44784c | 788 | if (bnum == 0) |
8a3fe4f8 | 789 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
790 | |
791 | ALL_BREAKPOINTS (b) | |
792 | if (b->number == bnum) | |
2f069f6f | 793 | { |
2566ad2d | 794 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
795 | return; |
796 | } | |
c906108c | 797 | |
8a3fe4f8 | 798 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
799 | } |
800 | ||
a7bdde9e VP |
801 | /* Check that COMMAND do not contain commands that are suitable |
802 | only for tracepoints and not suitable for ordinary breakpoints. | |
803 | Throw if any such commands is found. | |
804 | */ | |
805 | static void | |
806 | check_no_tracepoint_commands (struct command_line *commands) | |
807 | { | |
808 | struct command_line *c; | |
cc59ec59 | 809 | |
a7bdde9e VP |
810 | for (c = commands; c; c = c->next) |
811 | { | |
812 | int i; | |
813 | ||
814 | if (c->control_type == while_stepping_control) | |
815 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
816 | ||
817 | for (i = 0; i < c->body_count; ++i) | |
818 | check_no_tracepoint_commands ((c->body_list)[i]); | |
819 | ||
820 | /* Not that command parsing removes leading whitespace and comment | |
821 | lines and also empty lines. So, we only need to check for | |
822 | command directly. */ | |
823 | if (strstr (c->line, "collect ") == c->line) | |
824 | error (_("The 'collect' command can only be used for tracepoints")); | |
825 | ||
51661e93 VP |
826 | if (strstr (c->line, "teval ") == c->line) |
827 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
828 | } |
829 | } | |
830 | ||
d77f58be SS |
831 | /* Encapsulate tests for different types of tracepoints. */ |
832 | ||
a7bdde9e | 833 | int |
d77f58be | 834 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 835 | { |
0fb4aa4b PA |
836 | return (b->type == bp_tracepoint |
837 | || b->type == bp_fast_tracepoint | |
838 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 839 | } |
d77f58be | 840 | |
95a42b64 TT |
841 | /* A helper function that validsates that COMMANDS are valid for a |
842 | breakpoint. This function will throw an exception if a problem is | |
843 | found. */ | |
48cb2d85 | 844 | |
95a42b64 TT |
845 | static void |
846 | validate_commands_for_breakpoint (struct breakpoint *b, | |
847 | struct command_line *commands) | |
48cb2d85 | 848 | { |
d77f58be | 849 | if (is_tracepoint (b)) |
a7bdde9e VP |
850 | { |
851 | /* We need to verify that each top-level element of commands | |
852 | is valid for tracepoints, that there's at most one while-stepping | |
853 | element, and that while-stepping's body has valid tracing commands | |
854 | excluding nested while-stepping. */ | |
855 | struct command_line *c; | |
856 | struct command_line *while_stepping = 0; | |
857 | for (c = commands; c; c = c->next) | |
858 | { | |
a7bdde9e VP |
859 | if (c->control_type == while_stepping_control) |
860 | { | |
861 | if (b->type == bp_fast_tracepoint) | |
0fb4aa4b PA |
862 | error (_("\ |
863 | The 'while-stepping' command cannot be used for fast tracepoint")); | |
864 | else if (b->type == bp_static_tracepoint) | |
865 | error (_("\ | |
866 | The 'while-stepping' command cannot be used for static tracepoint")); | |
a7bdde9e VP |
867 | |
868 | if (while_stepping) | |
869 | error (_("The 'while-stepping' command can be used only once")); | |
870 | else | |
871 | while_stepping = c; | |
872 | } | |
873 | } | |
874 | if (while_stepping) | |
875 | { | |
876 | struct command_line *c2; | |
877 | ||
878 | gdb_assert (while_stepping->body_count == 1); | |
879 | c2 = while_stepping->body_list[0]; | |
880 | for (; c2; c2 = c2->next) | |
881 | { | |
a7bdde9e VP |
882 | if (c2->control_type == while_stepping_control) |
883 | error (_("The 'while-stepping' command cannot be nested")); | |
884 | } | |
885 | } | |
886 | } | |
887 | else | |
888 | { | |
889 | check_no_tracepoint_commands (commands); | |
890 | } | |
95a42b64 TT |
891 | } |
892 | ||
0fb4aa4b PA |
893 | /* Return a vector of all the static tracepoints set at ADDR. The |
894 | caller is responsible for releasing the vector. */ | |
895 | ||
896 | VEC(breakpoint_p) * | |
897 | static_tracepoints_here (CORE_ADDR addr) | |
898 | { | |
899 | struct breakpoint *b; | |
900 | VEC(breakpoint_p) *found = 0; | |
901 | struct bp_location *loc; | |
902 | ||
903 | ALL_BREAKPOINTS (b) | |
904 | if (b->type == bp_static_tracepoint) | |
905 | { | |
906 | for (loc = b->loc; loc; loc = loc->next) | |
907 | if (loc->address == addr) | |
908 | VEC_safe_push(breakpoint_p, found, b); | |
909 | } | |
910 | ||
911 | return found; | |
912 | } | |
913 | ||
95a42b64 TT |
914 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
915 | validate that only allowed commands are included. | |
916 | */ | |
917 | ||
918 | void | |
919 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
920 | { | |
921 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 922 | |
9add0f1b TT |
923 | decref_counted_command_line (&b->commands); |
924 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
925 | breakpoints_changed (); |
926 | observer_notify_breakpoint_modified (b->number); | |
927 | } | |
928 | ||
95a42b64 TT |
929 | void |
930 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
931 | { |
932 | struct breakpoint *b = closure; | |
cc59ec59 | 933 | |
a7bdde9e VP |
934 | validate_actionline (&line, b); |
935 | } | |
936 | ||
95a42b64 TT |
937 | /* A structure used to pass information through |
938 | map_breakpoint_numbers. */ | |
939 | ||
940 | struct commands_info | |
941 | { | |
942 | /* True if the command was typed at a tty. */ | |
943 | int from_tty; | |
86b17b60 PA |
944 | |
945 | /* The breakpoint range spec. */ | |
946 | char *arg; | |
947 | ||
95a42b64 TT |
948 | /* Non-NULL if the body of the commands are being read from this |
949 | already-parsed command. */ | |
950 | struct command_line *control; | |
86b17b60 | 951 | |
95a42b64 TT |
952 | /* The command lines read from the user, or NULL if they have not |
953 | yet been read. */ | |
954 | struct counted_command_line *cmd; | |
955 | }; | |
956 | ||
957 | /* A callback for map_breakpoint_numbers that sets the commands for | |
958 | commands_command. */ | |
959 | ||
c906108c | 960 | static void |
95a42b64 | 961 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 962 | { |
95a42b64 | 963 | struct commands_info *info = data; |
c906108c | 964 | |
95a42b64 TT |
965 | if (info->cmd == NULL) |
966 | { | |
967 | struct command_line *l; | |
5c44784c | 968 | |
95a42b64 TT |
969 | if (info->control != NULL) |
970 | l = copy_command_lines (info->control->body_list[0]); | |
971 | else | |
86b17b60 PA |
972 | { |
973 | struct cleanup *old_chain; | |
974 | char *str; | |
c5aa993b | 975 | |
86b17b60 PA |
976 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
977 | info->arg); | |
978 | ||
979 | old_chain = make_cleanup (xfree, str); | |
980 | ||
981 | l = read_command_lines (str, | |
982 | info->from_tty, 1, | |
d77f58be | 983 | (is_tracepoint (b) |
86b17b60 PA |
984 | ? check_tracepoint_command : 0), |
985 | b); | |
986 | ||
987 | do_cleanups (old_chain); | |
988 | } | |
a7bdde9e | 989 | |
95a42b64 TT |
990 | info->cmd = alloc_counted_command_line (l); |
991 | } | |
992 | ||
993 | /* If a breakpoint was on the list more than once, we don't need to | |
994 | do anything. */ | |
995 | if (b->commands != info->cmd) | |
996 | { | |
997 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
998 | incref_counted_command_line (info->cmd); | |
999 | decref_counted_command_line (&b->commands); | |
1000 | b->commands = info->cmd; | |
1001 | breakpoints_changed (); | |
1002 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 1003 | } |
95a42b64 TT |
1004 | } |
1005 | ||
1006 | static void | |
1007 | commands_command_1 (char *arg, int from_tty, struct command_line *control) | |
1008 | { | |
1009 | struct cleanup *cleanups; | |
1010 | struct commands_info info; | |
1011 | ||
1012 | info.from_tty = from_tty; | |
1013 | info.control = control; | |
1014 | info.cmd = NULL; | |
1015 | /* If we read command lines from the user, then `info' will hold an | |
1016 | extra reference to the commands that we must clean up. */ | |
1017 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1018 | ||
1019 | if (arg == NULL || !*arg) | |
1020 | { | |
86b17b60 PA |
1021 | if (breakpoint_count - prev_breakpoint_count > 1) |
1022 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count); | |
95a42b64 TT |
1023 | else if (breakpoint_count > 0) |
1024 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1025 | else |
1026 | { | |
1027 | /* So that we don't try to free the incoming non-NULL | |
1028 | argument in the cleanup below. Mapping breakpoint | |
1029 | numbers will fail in this case. */ | |
1030 | arg = NULL; | |
1031 | } | |
95a42b64 | 1032 | } |
9766ced4 SS |
1033 | else |
1034 | /* The command loop has some static state, so we need to preserve | |
1035 | our argument. */ | |
1036 | arg = xstrdup (arg); | |
86b17b60 PA |
1037 | |
1038 | if (arg != NULL) | |
1039 | make_cleanup (xfree, arg); | |
1040 | ||
1041 | info.arg = arg; | |
95a42b64 TT |
1042 | |
1043 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1044 | ||
1045 | if (info.cmd == NULL) | |
1046 | error (_("No breakpoints specified.")); | |
1047 | ||
1048 | do_cleanups (cleanups); | |
1049 | } | |
1050 | ||
1051 | static void | |
1052 | commands_command (char *arg, int from_tty) | |
1053 | { | |
1054 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1055 | } |
40c03ae8 EZ |
1056 | |
1057 | /* Like commands_command, but instead of reading the commands from | |
1058 | input stream, takes them from an already parsed command structure. | |
1059 | ||
1060 | This is used by cli-script.c to DTRT with breakpoint commands | |
1061 | that are part of if and while bodies. */ | |
1062 | enum command_control_type | |
1063 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1064 | { | |
95a42b64 TT |
1065 | commands_command_1 (arg, 0, cmd); |
1066 | return simple_control; | |
40c03ae8 | 1067 | } |
876fa593 JK |
1068 | |
1069 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1070 | ||
1071 | static int | |
1072 | bp_location_has_shadow (struct bp_location *bl) | |
1073 | { | |
1074 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1075 | return 0; | |
1076 | if (!bl->inserted) | |
1077 | return 0; | |
1078 | if (bl->target_info.shadow_len == 0) | |
1079 | /* bp isn't valid, or doesn't shadow memory. */ | |
1080 | return 0; | |
1081 | return 1; | |
1082 | } | |
1083 | ||
8defab1a | 1084 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1085 | by replacing any memory breakpoints with their shadowed contents. |
1086 | ||
1087 | The range of shadowed area by each bp_location is: | |
1088 | b->address - bp_location_placed_address_before_address_max | |
1089 | up to b->address + bp_location_shadow_len_after_address_max | |
1090 | The range we were requested to resolve shadows for is: | |
1091 | memaddr ... memaddr + len | |
1092 | Thus the safe cutoff boundaries for performance optimization are | |
1093 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
1094 | and: | |
1095 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 1096 | |
8defab1a DJ |
1097 | void |
1098 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1099 | { |
876fa593 JK |
1100 | /* Left boundary, right boundary and median element of our binary search. */ |
1101 | unsigned bc_l, bc_r, bc; | |
1102 | ||
1103 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
1104 | safe to report lower value but a failure to report higher one. */ | |
1105 | ||
1106 | bc_l = 0; | |
1107 | bc_r = bp_location_count; | |
1108 | while (bc_l + 1 < bc_r) | |
1109 | { | |
1110 | struct bp_location *b; | |
1111 | ||
1112 | bc = (bc_l + bc_r) / 2; | |
1113 | b = bp_location[bc]; | |
1114 | ||
1115 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
1116 | Then advance the left boundary only if we are sure the BC element can | |
1117 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
1118 | ||
1119 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
1120 | we cannot miss a breakpoint with its shadow range tail still reaching | |
1121 | MEMADDR. */ | |
c5aa993b | 1122 | |
876fa593 JK |
1123 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
1124 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
1125 | bc_l = bc; | |
1126 | else | |
1127 | bc_r = bc; | |
1128 | } | |
1129 | ||
1130 | /* Now do full processing of the found relevant range of elements. */ | |
1131 | ||
1132 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1133 | { |
876fa593 JK |
1134 | struct bp_location *b = bp_location[bc]; |
1135 | CORE_ADDR bp_addr = 0; | |
1136 | int bp_size = 0; | |
1137 | int bptoffset = 0; | |
1138 | ||
2bdf28a0 | 1139 | /* bp_location array has B->OWNER always non-NULL. */ |
ffce0d52 | 1140 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1141 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
1142 | b->owner->number); |
1143 | ||
876fa593 JK |
1144 | /* Performance optimization: any futher element can no longer affect BUF |
1145 | content. */ | |
1146 | ||
1147 | if (b->address >= bp_location_placed_address_before_address_max | |
1148 | && memaddr + len <= b->address | |
1149 | - bp_location_placed_address_before_address_max) | |
1150 | break; | |
1151 | ||
1152 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 1153 | continue; |
6c95b8df PA |
1154 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
1155 | current_program_space->aspace, 0)) | |
1156 | continue; | |
1157 | ||
c5aa993b JM |
1158 | /* Addresses and length of the part of the breakpoint that |
1159 | we need to copy. */ | |
8181d85f DJ |
1160 | bp_addr = b->target_info.placed_address; |
1161 | bp_size = b->target_info.shadow_len; | |
8defab1a | 1162 | |
c5aa993b JM |
1163 | if (bp_addr + bp_size <= memaddr) |
1164 | /* The breakpoint is entirely before the chunk of memory we | |
1165 | are reading. */ | |
1166 | continue; | |
8defab1a | 1167 | |
c5aa993b JM |
1168 | if (bp_addr >= memaddr + len) |
1169 | /* The breakpoint is entirely after the chunk of memory we are | |
1170 | reading. */ | |
1171 | continue; | |
c5aa993b | 1172 | |
8defab1a DJ |
1173 | /* Offset within shadow_contents. */ |
1174 | if (bp_addr < memaddr) | |
1175 | { | |
1176 | /* Only copy the second part of the breakpoint. */ | |
1177 | bp_size -= memaddr - bp_addr; | |
1178 | bptoffset = memaddr - bp_addr; | |
1179 | bp_addr = memaddr; | |
1180 | } | |
c5aa993b | 1181 | |
8defab1a DJ |
1182 | if (bp_addr + bp_size > memaddr + len) |
1183 | { | |
1184 | /* Only copy the first part of the breakpoint. */ | |
1185 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1186 | } | |
c5aa993b | 1187 | |
8defab1a DJ |
1188 | memcpy (buf + bp_addr - memaddr, |
1189 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 1190 | } |
c906108c | 1191 | } |
c906108c | 1192 | \f |
c5aa993b | 1193 | |
687595f9 | 1194 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1195 | static void |
687595f9 DJ |
1196 | insert_catchpoint (struct ui_out *uo, void *args) |
1197 | { | |
1198 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1199 | |
fe798b75 JB |
1200 | gdb_assert (b->type == bp_catchpoint); |
1201 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1202 | ||
1203 | b->ops->insert (b); | |
687595f9 DJ |
1204 | } |
1205 | ||
60e1c644 PA |
1206 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1207 | ||
a5606eee | 1208 | static int |
d77f58be | 1209 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1210 | { |
1211 | return (bpt->type == bp_hardware_watchpoint | |
1212 | || bpt->type == bp_read_watchpoint | |
1213 | || bpt->type == bp_access_watchpoint); | |
1214 | } | |
7270d8f2 | 1215 | |
60e1c644 PA |
1216 | /* Return true if BPT is of any watchpoint kind, hardware or |
1217 | software. */ | |
1218 | ||
1219 | static int | |
d77f58be | 1220 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1221 | { |
1222 | return (is_hardware_watchpoint (bpt) | |
1223 | || bpt->type == bp_watchpoint); | |
1224 | } | |
1225 | ||
f6bc2008 PA |
1226 | /* Assuming that B is a watchpoint: returns true if the current thread |
1227 | and its running state are safe to evaluate or update watchpoint B. | |
1228 | Watchpoints on local expressions need to be evaluated in the | |
1229 | context of the thread that was current when the watchpoint was | |
1230 | created, and, that thread needs to be stopped to be able to select | |
1231 | the correct frame context. Watchpoints on global expressions can | |
1232 | be evaluated on any thread, and in any state. It is presently left | |
1233 | to the target allowing memory accesses when threads are | |
1234 | running. */ | |
1235 | ||
1236 | static int | |
1237 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1238 | { | |
1239 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1240 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1241 | && !is_executing (inferior_ptid))); | |
1242 | } | |
1243 | ||
567e1b4e JB |
1244 | /* Assuming that B is a watchpoint: |
1245 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1246 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1247 | - Evaluate the condition if there is one, and store the result |
1248 | in b->loc->cond. | |
a5606eee VP |
1249 | - Update the list of values that must be watched in B->loc. |
1250 | ||
bfa149ac | 1251 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1252 | If this is local watchpoint that is out of scope, delete it. |
1253 | ||
1254 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1255 | + inserted on each stop here. Normal breakpoints must never be removed | |
1256 | because they might be missed by a running thread when debugging in non-stop | |
1257 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1258 | processed here) are specific to each LWP since they are stored in each LWP's | |
1259 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1260 | order to be able to modify its hardware watchpoints. | |
1261 | ||
1262 | Hardware watchpoints must be reset exactly once after being presented to the | |
1263 | user. It cannot be done sooner, because it would reset the data used to | |
1264 | present the watchpoint hit to the user. And it must not be done later | |
1265 | because it could display the same single watchpoint hit during multiple GDB | |
1266 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1267 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1268 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1269 | memory content has not changed. | |
1270 | ||
1271 | The following constraints influence the location where we can reset hardware | |
1272 | watchpoints: | |
1273 | ||
1274 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1275 | several times when GDB stops. | |
1276 | ||
1277 | [linux] | |
1278 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1279 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1280 | reason for stopping, and all the other hits are presented later, one after | |
1281 | the other, each time the user requests the execution to be resumed. | |
1282 | Execution is not resumed for the threads still having pending hit event | |
1283 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1284 | the inferior on the first stop the thread hit event is kept being reported | |
1285 | from its cached value by linux_nat_stopped_data_address until the real | |
1286 | thread resume happens after the watchpoint gets presented and thus its | |
1287 | LWP_INFO->STATUS gets reset. | |
1288 | ||
1289 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1290 | removal from inferior. */ | |
1291 | ||
b40ce68a | 1292 | static void |
a5606eee | 1293 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1294 | { |
a5606eee | 1295 | int within_current_scope; |
a5606eee | 1296 | struct frame_id saved_frame_id; |
66076460 | 1297 | int frame_saved; |
a5606eee | 1298 | |
f6bc2008 PA |
1299 | /* If this is a local watchpoint, we only want to check if the |
1300 | watchpoint frame is in scope if the current thread is the thread | |
1301 | that was used to create the watchpoint. */ | |
1302 | if (!watchpoint_in_thread_scope (b)) | |
1303 | return; | |
1304 | ||
876fa593 | 1305 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1306 | update_global_locations will eventually delete them and remove |
1307 | breakpoints if needed. */ | |
a5606eee VP |
1308 | b->loc = NULL; |
1309 | ||
1310 | if (b->disposition == disp_del_at_next_stop) | |
1311 | return; | |
1312 | ||
66076460 | 1313 | frame_saved = 0; |
a5606eee VP |
1314 | |
1315 | /* Determine if the watchpoint is within scope. */ | |
1316 | if (b->exp_valid_block == NULL) | |
1317 | within_current_scope = 1; | |
1318 | else | |
1319 | { | |
1320 | struct frame_info *fi; | |
66076460 DJ |
1321 | |
1322 | /* Save the current frame's ID so we can restore it after | |
1323 | evaluating the watchpoint expression on its own frame. */ | |
1324 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1325 | took a frame parameter, so that we didn't have to change the | |
1326 | selected frame. */ | |
1327 | frame_saved = 1; | |
1328 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1329 | ||
a5606eee VP |
1330 | fi = frame_find_by_id (b->watchpoint_frame); |
1331 | within_current_scope = (fi != NULL); | |
1332 | if (within_current_scope) | |
1333 | select_frame (fi); | |
1334 | } | |
1335 | ||
1336 | if (within_current_scope && reparse) | |
1337 | { | |
1338 | char *s; | |
d63d0675 | 1339 | |
a5606eee VP |
1340 | if (b->exp) |
1341 | { | |
1342 | xfree (b->exp); | |
1343 | b->exp = NULL; | |
1344 | } | |
d63d0675 | 1345 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1346 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1347 | /* If the meaning of expression itself changed, the old value is | |
1348 | no longer relevant. We don't want to report a watchpoint hit | |
1349 | to the user when the old value and the new value may actually | |
1350 | be completely different objects. */ | |
1351 | value_free (b->val); | |
fa4727a6 DJ |
1352 | b->val = NULL; |
1353 | b->val_valid = 0; | |
60e1c644 PA |
1354 | |
1355 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1356 | expression is stored in the breakpoint object, not in the | |
1357 | locations (re)created below. */ | |
1358 | if (b->cond_string != NULL) | |
1359 | { | |
1360 | if (b->cond_exp != NULL) | |
1361 | { | |
1362 | xfree (b->cond_exp); | |
1363 | b->cond_exp = NULL; | |
1364 | } | |
1365 | ||
1366 | s = b->cond_string; | |
1367 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1368 | } | |
a5606eee | 1369 | } |
a5606eee VP |
1370 | |
1371 | /* If we failed to parse the expression, for example because | |
1372 | it refers to a global variable in a not-yet-loaded shared library, | |
1373 | don't try to insert watchpoint. We don't automatically delete | |
1374 | such watchpoint, though, since failure to parse expression | |
1375 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1376 | if ( !target_has_execution) |
1377 | { | |
1378 | /* Without execution, memory can't change. No use to try and | |
1379 | set watchpoint locations. The watchpoint will be reset when | |
1380 | the target gains execution, through breakpoint_re_set. */ | |
1381 | } | |
1382 | else if (within_current_scope && b->exp) | |
a5606eee | 1383 | { |
0cf6dd15 | 1384 | int pc = 0; |
fa4727a6 | 1385 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1386 | struct program_space *frame_pspace; |
a5606eee | 1387 | |
0cf6dd15 | 1388 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1389 | |
a5606eee VP |
1390 | /* Avoid setting b->val if it's already set. The meaning of |
1391 | b->val is 'the last value' user saw, and we should update | |
1392 | it only if we reported that last value to user. As it | |
1393 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1394 | if (!b->val_valid) |
1395 | { | |
1396 | b->val = v; | |
1397 | b->val_valid = 1; | |
1398 | } | |
a5606eee | 1399 | |
db2ad4c3 JK |
1400 | /* Change the type of breakpoint between hardware assisted or an |
1401 | ordinary watchpoint depending on the hardware support and free | |
1402 | hardware slots. REPARSE is set when the inferior is started. */ | |
1403 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1404 | && reparse) | |
1405 | { | |
ca2d49e8 | 1406 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1407 | |
7b838ca2 TJB |
1408 | /* We need to determine how many resources are already used |
1409 | for all other hardware watchpoints to see if we still have | |
1410 | enough resources to also fit this watchpoint in as well. | |
1411 | To avoid the hw_watchpoint_used_count call below from counting | |
1412 | this watchpoint, make sure that it is marked as a software | |
1413 | watchpoint. */ | |
1414 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1415 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1416 | &other_type_used); | |
1417 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1418 | ||
ca2d49e8 | 1419 | if (!mem_cnt) |
db2ad4c3 JK |
1420 | b->type = bp_watchpoint; |
1421 | else | |
ca2d49e8 | 1422 | { |
d92524f1 | 1423 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1424 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1425 | if (target_resources_ok <= 0) | |
1426 | b->type = bp_watchpoint; | |
1427 | else | |
1428 | b->type = bp_hardware_watchpoint; | |
1429 | } | |
db2ad4c3 JK |
1430 | } |
1431 | ||
2d134ed3 PA |
1432 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1433 | ||
a5606eee | 1434 | /* Look at each value on the value chain. */ |
fa4727a6 | 1435 | for (v = val_chain; v; v = next) |
a5606eee VP |
1436 | { |
1437 | /* If it's a memory location, and GDB actually needed | |
1438 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1439 | must watch it. If the first value returned is |
1440 | still lazy, that means an error occurred reading it; | |
1441 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1442 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1443 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1444 | { |
1445 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1446 | |
a5606eee VP |
1447 | /* We only watch structs and arrays if user asked |
1448 | for it explicitly, never if they just happen to | |
1449 | appear in the middle of some value chain. */ | |
fa4727a6 | 1450 | if (v == result |
a5606eee VP |
1451 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1452 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1453 | { | |
1454 | CORE_ADDR addr; | |
1455 | int len, type; | |
1456 | struct bp_location *loc, **tmp; | |
1457 | ||
42ae5230 | 1458 | addr = value_address (v); |
a5606eee VP |
1459 | len = TYPE_LENGTH (value_type (v)); |
1460 | type = hw_write; | |
1461 | if (b->type == bp_read_watchpoint) | |
1462 | type = hw_read; | |
1463 | else if (b->type == bp_access_watchpoint) | |
1464 | type = hw_access; | |
1465 | ||
39d61571 | 1466 | loc = allocate_bp_location (b); |
a5606eee VP |
1467 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1468 | ; | |
1469 | *tmp = loc; | |
a6d9a66e | 1470 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1471 | |
1472 | loc->pspace = frame_pspace; | |
a5606eee VP |
1473 | loc->address = addr; |
1474 | loc->length = len; | |
1475 | loc->watchpoint_type = type; | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | next = value_next (v); | |
1480 | if (v != b->val) | |
1481 | value_free (v); | |
1482 | } | |
1483 | ||
c7437ca6 PA |
1484 | /* If a software watchpoint is not watching any memory, then the |
1485 | above left it without any location set up. But, | |
1486 | bpstat_stop_status requires a location to be able to report | |
1487 | stops, so make sure there's at least a dummy one. */ | |
1488 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1489 | { | |
1490 | b->loc = allocate_bp_location (b); | |
1491 | b->loc->pspace = frame_pspace; | |
1492 | b->loc->address = -1; | |
1493 | b->loc->length = -1; | |
1494 | b->loc->watchpoint_type = -1; | |
1495 | } | |
a5606eee VP |
1496 | } |
1497 | else if (!within_current_scope) | |
7270d8f2 | 1498 | { |
a5606eee | 1499 | printf_filtered (_("\ |
cce7e648 | 1500 | Watchpoint %d deleted because the program has left the block\n\ |
a5606eee VP |
1501 | in which its expression is valid.\n"), |
1502 | b->number); | |
1503 | if (b->related_breakpoint) | |
60e1c644 PA |
1504 | { |
1505 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1506 | b->related_breakpoint->related_breakpoint = NULL; | |
1507 | b->related_breakpoint= NULL; | |
1508 | } | |
a5606eee | 1509 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1510 | } |
a5606eee VP |
1511 | |
1512 | /* Restore the selected frame. */ | |
66076460 DJ |
1513 | if (frame_saved) |
1514 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1515 | } |
1516 | ||
a5606eee | 1517 | |
74960c60 VP |
1518 | /* Returns 1 iff breakpoint location should be |
1519 | inserted in the inferior. */ | |
1520 | static int | |
1521 | should_be_inserted (struct bp_location *bpt) | |
1522 | { | |
2bdf28a0 | 1523 | if (bpt->owner == NULL || !breakpoint_enabled (bpt->owner)) |
74960c60 VP |
1524 | return 0; |
1525 | ||
1526 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1527 | return 0; | |
1528 | ||
1529 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1530 | return 0; | |
1531 | ||
56710373 PA |
1532 | /* This is set for example, when we're attached to the parent of a |
1533 | vfork, and have detached from the child. The child is running | |
1534 | free, and we expect it to do an exec or exit, at which point the | |
1535 | OS makes the parent schedulable again (and the target reports | |
1536 | that the vfork is done). Until the child is done with the shared | |
1537 | memory region, do not insert breakpoints in the parent, otherwise | |
1538 | the child could still trip on the parent's breakpoints. Since | |
1539 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1540 | if (bpt->pspace->breakpoints_not_allowed) | |
1541 | return 0; | |
1542 | ||
1042e4c0 SS |
1543 | /* Tracepoints are inserted by the target at a time of its choosing, |
1544 | not by us. */ | |
d77f58be | 1545 | if (is_tracepoint (bpt->owner)) |
1042e4c0 SS |
1546 | return 0; |
1547 | ||
74960c60 VP |
1548 | return 1; |
1549 | } | |
1550 | ||
879bfdc2 DJ |
1551 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1552 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1553 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1554 | |
1555 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1556 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1557 | static int |
879bfdc2 | 1558 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1559 | struct ui_file *tmp_error_stream, |
fa3a767f | 1560 | int *disabled_breaks, |
26bb91f3 | 1561 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1562 | { |
1563 | int val = 0; | |
1564 | ||
74960c60 | 1565 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1566 | return 0; |
1567 | ||
8181d85f DJ |
1568 | /* Initialize the target-specific information. */ |
1569 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1570 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1571 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1572 | |
879bfdc2 DJ |
1573 | if (bpt->loc_type == bp_loc_software_breakpoint |
1574 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1575 | { | |
765dc015 VP |
1576 | if (bpt->owner->type != bp_hardware_breakpoint) |
1577 | { | |
1578 | /* If the explicitly specified breakpoint type | |
1579 | is not hardware breakpoint, check the memory map to see | |
1580 | if the breakpoint address is in read only memory or not. | |
1581 | Two important cases are: | |
1582 | - location type is not hardware breakpoint, memory | |
1583 | is readonly. We change the type of the location to | |
1584 | hardware breakpoint. | |
1585 | - location type is hardware breakpoint, memory is read-write. | |
1586 | This means we've previously made the location hardware one, but | |
1587 | then the memory map changed, so we undo. | |
1588 | ||
1589 | When breakpoints are removed, remove_breakpoints will | |
1590 | use location types we've just set here, the only possible | |
1591 | problem is that memory map has changed during running program, | |
1592 | but it's not going to work anyway with current gdb. */ | |
1593 | struct mem_region *mr | |
1594 | = lookup_mem_region (bpt->target_info.placed_address); | |
1595 | ||
1596 | if (mr) | |
1597 | { | |
1598 | if (automatic_hardware_breakpoints) | |
1599 | { | |
765dc015 VP |
1600 | enum bp_loc_type new_type; |
1601 | ||
1602 | if (mr->attrib.mode != MEM_RW) | |
1603 | new_type = bp_loc_hardware_breakpoint; | |
1604 | else | |
1605 | new_type = bp_loc_software_breakpoint; | |
1606 | ||
1607 | if (new_type != bpt->loc_type) | |
1608 | { | |
1609 | static int said = 0; | |
cc59ec59 | 1610 | |
765dc015 VP |
1611 | bpt->loc_type = new_type; |
1612 | if (!said) | |
1613 | { | |
1614 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1615 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1616 | said = 1; |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1621 | && mr->attrib.mode != MEM_RW) | |
1622 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1623 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1624 | } |
1625 | } | |
1626 | ||
879bfdc2 DJ |
1627 | /* First check to see if we have to handle an overlay. */ |
1628 | if (overlay_debugging == ovly_off | |
1629 | || bpt->section == NULL | |
1630 | || !(section_is_overlay (bpt->section))) | |
1631 | { | |
1632 | /* No overlay handling: just set the breakpoint. */ | |
1633 | ||
1634 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1635 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1636 | &bpt->target_info); | |
879bfdc2 | 1637 | else |
a6d9a66e UW |
1638 | val = target_insert_breakpoint (bpt->gdbarch, |
1639 | &bpt->target_info); | |
879bfdc2 DJ |
1640 | } |
1641 | else | |
1642 | { | |
1643 | /* This breakpoint is in an overlay section. | |
1644 | Shall we set a breakpoint at the LMA? */ | |
1645 | if (!overlay_events_enabled) | |
1646 | { | |
1647 | /* Yes -- overlay event support is not active, | |
1648 | so we must try to set a breakpoint at the LMA. | |
1649 | This will not work for a hardware breakpoint. */ | |
1650 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1651 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1652 | bpt->owner->number); |
1653 | else | |
1654 | { | |
1655 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1656 | bpt->section); | |
1657 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1658 | bpt->overlay_target_info = bpt->target_info; |
1659 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1660 | val = target_insert_breakpoint (bpt->gdbarch, |
1661 | &bpt->overlay_target_info); | |
879bfdc2 | 1662 | if (val != 0) |
99361f52 DE |
1663 | fprintf_unfiltered (tmp_error_stream, |
1664 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1665 | bpt->owner->number); |
1666 | } | |
1667 | } | |
1668 | /* Shall we set a breakpoint at the VMA? */ | |
1669 | if (section_is_mapped (bpt->section)) | |
1670 | { | |
1671 | /* Yes. This overlay section is mapped into memory. */ | |
1672 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1673 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1674 | &bpt->target_info); | |
879bfdc2 | 1675 | else |
a6d9a66e UW |
1676 | val = target_insert_breakpoint (bpt->gdbarch, |
1677 | &bpt->target_info); | |
879bfdc2 DJ |
1678 | } |
1679 | else | |
1680 | { | |
1681 | /* No. This breakpoint will not be inserted. | |
1682 | No error, but do not mark the bp as 'inserted'. */ | |
1683 | return 0; | |
1684 | } | |
1685 | } | |
1686 | ||
1687 | if (val) | |
1688 | { | |
1689 | /* Can't set the breakpoint. */ | |
6c95b8df | 1690 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1691 | { |
1692 | /* See also: disable_breakpoints_in_shlibs. */ | |
1693 | val = 0; | |
0d381245 | 1694 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1695 | if (!*disabled_breaks) |
1696 | { | |
1697 | fprintf_unfiltered (tmp_error_stream, | |
1698 | "Cannot insert breakpoint %d.\n", | |
1699 | bpt->owner->number); | |
1700 | fprintf_unfiltered (tmp_error_stream, | |
1701 | "Temporarily disabling shared library breakpoints:\n"); | |
1702 | } | |
1703 | *disabled_breaks = 1; | |
1704 | fprintf_unfiltered (tmp_error_stream, | |
1705 | "breakpoint #%d\n", bpt->owner->number); | |
1706 | } | |
1707 | else | |
879bfdc2 | 1708 | { |
879bfdc2 DJ |
1709 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1710 | { | |
1711 | *hw_breakpoint_error = 1; | |
1712 | fprintf_unfiltered (tmp_error_stream, | |
1713 | "Cannot insert hardware breakpoint %d.\n", | |
1714 | bpt->owner->number); | |
1715 | } | |
1716 | else | |
1717 | { | |
1718 | fprintf_unfiltered (tmp_error_stream, | |
1719 | "Cannot insert breakpoint %d.\n", | |
1720 | bpt->owner->number); | |
1721 | fprintf_filtered (tmp_error_stream, | |
1722 | "Error accessing memory address "); | |
5af949e3 UW |
1723 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1724 | tmp_error_stream); | |
879bfdc2 DJ |
1725 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1726 | safe_strerror (val)); | |
1727 | } | |
1728 | ||
1729 | } | |
1730 | } | |
1731 | else | |
1732 | bpt->inserted = 1; | |
1733 | ||
1734 | return val; | |
1735 | } | |
1736 | ||
1737 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1738 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1739 | watchpoints. It's not clear that it's necessary... */ | |
1740 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1741 | { | |
85d721b8 | 1742 | val = target_insert_watchpoint (bpt->address, |
a5606eee | 1743 | bpt->length, |
0cf6dd15 TJB |
1744 | bpt->watchpoint_type, |
1745 | bpt->owner->cond_exp); | |
85d721b8 PA |
1746 | |
1747 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1748 | supported, try emulating one with an access watchpoint. */ | |
1749 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1750 | { | |
1751 | struct bp_location *loc, **loc_temp; | |
1752 | ||
1753 | /* But don't try to insert it, if there's already another | |
1754 | hw_access location that would be considered a duplicate | |
1755 | of this one. */ | |
1756 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1757 | if (loc != bpt | |
1758 | && loc->watchpoint_type == hw_access | |
1759 | && watchpoint_locations_match (bpt, loc)) | |
1760 | { | |
1761 | bpt->duplicate = 1; | |
1762 | bpt->inserted = 1; | |
1763 | bpt->target_info = loc->target_info; | |
1764 | bpt->watchpoint_type = hw_access; | |
1765 | val = 0; | |
1766 | break; | |
1767 | } | |
1768 | ||
1769 | if (val == 1) | |
1770 | { | |
1771 | val = target_insert_watchpoint (bpt->address, | |
1772 | bpt->length, | |
0cf6dd15 TJB |
1773 | hw_access, |
1774 | bpt->owner->cond_exp); | |
85d721b8 PA |
1775 | if (val == 0) |
1776 | bpt->watchpoint_type = hw_access; | |
1777 | } | |
1778 | } | |
1779 | ||
1780 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1781 | } |
1782 | ||
fe798b75 | 1783 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1784 | { |
71fff37b AC |
1785 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1786 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1787 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1788 | bpt->owner->number); | |
1789 | if (e.reason < 0) | |
879bfdc2 DJ |
1790 | bpt->owner->enable_state = bp_disabled; |
1791 | else | |
1792 | bpt->inserted = 1; | |
1640b821 DJ |
1793 | |
1794 | /* We've already printed an error message if there was a problem | |
1795 | inserting this catchpoint, and we've disabled the catchpoint, | |
1796 | so just return success. */ | |
1797 | return 0; | |
879bfdc2 DJ |
1798 | } |
1799 | ||
1800 | return 0; | |
1801 | } | |
1802 | ||
6c95b8df PA |
1803 | /* This function is called when program space PSPACE is about to be |
1804 | deleted. It takes care of updating breakpoints to not reference | |
1805 | PSPACE anymore. */ | |
1806 | ||
1807 | void | |
1808 | breakpoint_program_space_exit (struct program_space *pspace) | |
1809 | { | |
1810 | struct breakpoint *b, *b_temp; | |
876fa593 | 1811 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1812 | |
1813 | /* Remove any breakpoint that was set through this program space. */ | |
1814 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1815 | { | |
1816 | if (b->pspace == pspace) | |
1817 | delete_breakpoint (b); | |
1818 | } | |
1819 | ||
1820 | /* Breakpoints set through other program spaces could have locations | |
1821 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1822 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1823 | { |
1824 | struct bp_location *tmp; | |
1825 | ||
1826 | if (loc->pspace == pspace) | |
1827 | { | |
2bdf28a0 | 1828 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1829 | if (loc->owner->loc == loc) |
1830 | loc->owner->loc = loc->next; | |
1831 | else | |
1832 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1833 | if (tmp->next == loc) | |
1834 | { | |
1835 | tmp->next = loc->next; | |
1836 | break; | |
1837 | } | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | /* Now update the global location list to permanently delete the | |
1842 | removed locations above. */ | |
1843 | update_global_location_list (0); | |
1844 | } | |
1845 | ||
74960c60 VP |
1846 | /* Make sure all breakpoints are inserted in inferior. |
1847 | Throws exception on any error. | |
1848 | A breakpoint that is already inserted won't be inserted | |
1849 | again, so calling this function twice is safe. */ | |
1850 | void | |
1851 | insert_breakpoints (void) | |
1852 | { | |
1853 | struct breakpoint *bpt; | |
1854 | ||
1855 | ALL_BREAKPOINTS (bpt) | |
1856 | if (is_hardware_watchpoint (bpt)) | |
1857 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1858 | ||
b60e7edf | 1859 | update_global_location_list (1); |
74960c60 | 1860 | |
c35b1492 PA |
1861 | /* update_global_location_list does not insert breakpoints when |
1862 | always_inserted_mode is not enabled. Explicitly insert them | |
1863 | now. */ | |
1864 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1865 | insert_breakpoint_locations (); |
1866 | } | |
1867 | ||
c906108c SS |
1868 | /* insert_breakpoints is used when starting or continuing the program. |
1869 | remove_breakpoints is used when the program stops. | |
1870 | Both return zero if successful, | |
1871 | or an `errno' value if could not write the inferior. */ | |
1872 | ||
74960c60 VP |
1873 | static void |
1874 | insert_breakpoint_locations (void) | |
c906108c | 1875 | { |
a5606eee | 1876 | struct breakpoint *bpt; |
876fa593 | 1877 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1878 | int error = 0; |
c906108c SS |
1879 | int val = 0; |
1880 | int disabled_breaks = 0; | |
81d0cc19 | 1881 | int hw_breakpoint_error = 0; |
c906108c | 1882 | |
81d0cc19 | 1883 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1884 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1885 | |
81d0cc19 GS |
1886 | /* Explicitly mark the warning -- this will only be printed if |
1887 | there was an error. */ | |
1888 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1889 | |
1890 | save_current_space_and_thread (); | |
1891 | ||
876fa593 | 1892 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1893 | { |
74960c60 | 1894 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1895 | continue; |
1896 | ||
f365de73 | 1897 | /* There is no point inserting thread-specific breakpoints if the |
2bdf28a0 JK |
1898 | thread no longer exists. ALL_BP_LOCATIONS bp_location has B->OWNER |
1899 | always non-NULL. */ | |
f365de73 AS |
1900 | if (b->owner->thread != -1 |
1901 | && !valid_thread_id (b->owner->thread)) | |
1902 | continue; | |
1903 | ||
6c95b8df PA |
1904 | switch_to_program_space_and_thread (b->pspace); |
1905 | ||
1906 | /* For targets that support global breakpoints, there's no need | |
1907 | to select an inferior to insert breakpoint to. In fact, even | |
1908 | if we aren't attached to any process yet, we should still | |
1909 | insert breakpoints. */ | |
1910 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1911 | && ptid_equal (inferior_ptid, null_ptid)) | |
1912 | continue; | |
1913 | ||
879bfdc2 | 1914 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1915 | &disabled_breaks, |
879bfdc2 DJ |
1916 | &hw_breakpoint_error); |
1917 | if (val) | |
e236ba44 | 1918 | error = val; |
879bfdc2 | 1919 | } |
c906108c | 1920 | |
a5606eee VP |
1921 | /* If we failed to insert all locations of a watchpoint, |
1922 | remove them, as half-inserted watchpoint is of limited use. */ | |
1923 | ALL_BREAKPOINTS (bpt) | |
1924 | { | |
1925 | int some_failed = 0; | |
1926 | struct bp_location *loc; | |
1927 | ||
1928 | if (!is_hardware_watchpoint (bpt)) | |
1929 | continue; | |
1930 | ||
d6b74ac4 | 1931 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1932 | continue; |
74960c60 VP |
1933 | |
1934 | if (bpt->disposition == disp_del_at_next_stop) | |
1935 | continue; | |
a5606eee VP |
1936 | |
1937 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1938 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1939 | { |
1940 | some_failed = 1; | |
1941 | break; | |
1942 | } | |
1943 | if (some_failed) | |
1944 | { | |
1945 | for (loc = bpt->loc; loc; loc = loc->next) | |
1946 | if (loc->inserted) | |
1947 | remove_breakpoint (loc, mark_uninserted); | |
1948 | ||
1949 | hw_breakpoint_error = 1; | |
1950 | fprintf_unfiltered (tmp_error_stream, | |
1951 | "Could not insert hardware watchpoint %d.\n", | |
1952 | bpt->number); | |
1953 | error = -1; | |
1954 | } | |
1955 | } | |
1956 | ||
e236ba44 | 1957 | if (error) |
81d0cc19 GS |
1958 | { |
1959 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1960 | message about possibly exhausted resources. */ | |
879bfdc2 | 1961 | if (hw_breakpoint_error) |
81d0cc19 | 1962 | { |
c6510018 MS |
1963 | fprintf_unfiltered (tmp_error_stream, |
1964 | "Could not insert hardware breakpoints:\n\ | |
1965 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1966 | } |
81d0cc19 GS |
1967 | target_terminal_ours_for_output (); |
1968 | error_stream (tmp_error_stream); | |
1969 | } | |
f7545552 TT |
1970 | |
1971 | do_cleanups (cleanups); | |
c906108c SS |
1972 | } |
1973 | ||
c906108c | 1974 | int |
fba45db2 | 1975 | remove_breakpoints (void) |
c906108c | 1976 | { |
876fa593 | 1977 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1978 | int val = 0; |
c906108c | 1979 | |
876fa593 | 1980 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 1981 | { |
0bde7532 | 1982 | if (b->inserted) |
3a1bae8e | 1983 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 1984 | } |
3a1bae8e | 1985 | return val; |
c906108c SS |
1986 | } |
1987 | ||
6c95b8df PA |
1988 | /* Remove breakpoints of process PID. */ |
1989 | ||
1990 | int | |
1991 | remove_breakpoints_pid (int pid) | |
1992 | { | |
876fa593 | 1993 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
1994 | int val; |
1995 | struct inferior *inf = find_inferior_pid (pid); | |
1996 | ||
876fa593 | 1997 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
1998 | { |
1999 | if (b->pspace != inf->pspace) | |
2000 | continue; | |
2001 | ||
2002 | if (b->inserted) | |
2003 | { | |
2004 | val = remove_breakpoint (b, mark_uninserted); | |
2005 | if (val != 0) | |
2006 | return val; | |
2007 | } | |
2008 | } | |
2009 | return 0; | |
2010 | } | |
2011 | ||
692590c1 | 2012 | int |
80ce1ecb | 2013 | remove_hw_watchpoints (void) |
692590c1 | 2014 | { |
876fa593 | 2015 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2016 | int val = 0; |
692590c1 | 2017 | |
876fa593 | 2018 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 2019 | { |
0bde7532 | 2020 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 2021 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 2022 | } |
3a1bae8e | 2023 | return val; |
692590c1 MS |
2024 | } |
2025 | ||
c906108c | 2026 | int |
fba45db2 | 2027 | reattach_breakpoints (int pid) |
c906108c | 2028 | { |
6c95b8df | 2029 | struct cleanup *old_chain; |
876fa593 | 2030 | struct bp_location *b, **bp_tmp; |
c906108c | 2031 | int val; |
a4954f26 | 2032 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2033 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2034 | struct inferior *inf; |
2035 | struct thread_info *tp; | |
2036 | ||
2037 | tp = any_live_thread_of_process (pid); | |
2038 | if (tp == NULL) | |
2039 | return 1; | |
2040 | ||
2041 | inf = find_inferior_pid (pid); | |
2042 | old_chain = save_inferior_ptid (); | |
2043 | ||
2044 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2045 | |
2046 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2047 | |
876fa593 | 2048 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2049 | { |
6c95b8df PA |
2050 | if (b->pspace != inf->pspace) |
2051 | continue; | |
2052 | ||
0bde7532 | 2053 | if (b->inserted) |
c5aa993b | 2054 | { |
a4954f26 DJ |
2055 | b->inserted = 0; |
2056 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 2057 | &dummy1, &dummy2); |
c5aa993b JM |
2058 | if (val != 0) |
2059 | { | |
ce696e05 | 2060 | do_cleanups (old_chain); |
c5aa993b JM |
2061 | return val; |
2062 | } | |
2063 | } | |
2064 | } | |
ce696e05 | 2065 | do_cleanups (old_chain); |
c906108c SS |
2066 | return 0; |
2067 | } | |
2068 | ||
e58b0e63 PA |
2069 | static int internal_breakpoint_number = -1; |
2070 | ||
84f4c1fe PM |
2071 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2072 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2073 | from internal_breakpoint_number and that variable decremented. | |
2074 | Otherwis the breakpoint number will be populated from | |
2075 | breakpoint_count and that value incremented. Internal breakpoints | |
2076 | do not set the internal var bpnum. */ | |
2077 | static void | |
2078 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2079 | { | |
2080 | if (internal) | |
2081 | b->number = internal_breakpoint_number--; | |
2082 | else | |
2083 | { | |
2084 | set_breakpoint_count (breakpoint_count + 1); | |
2085 | b->number = breakpoint_count; | |
2086 | } | |
2087 | } | |
2088 | ||
e62c965a | 2089 | static struct breakpoint * |
a6d9a66e UW |
2090 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2091 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2092 | { |
e62c965a PP |
2093 | struct symtab_and_line sal; |
2094 | struct breakpoint *b; | |
2095 | ||
2096 | init_sal (&sal); /* initialize to zeroes */ | |
2097 | ||
2098 | sal.pc = address; | |
2099 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2100 | sal.pspace = current_program_space; |
e62c965a | 2101 | |
a6d9a66e | 2102 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2103 | b->number = internal_breakpoint_number--; |
2104 | b->disposition = disp_donttouch; | |
2105 | ||
2106 | return b; | |
2107 | } | |
2108 | ||
2109 | static void | |
69de3c6a | 2110 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2111 | { |
69de3c6a | 2112 | struct objfile *objfile; |
e62c965a | 2113 | |
69de3c6a PP |
2114 | ALL_OBJFILES (objfile) |
2115 | { | |
2116 | struct breakpoint *b; | |
2117 | struct minimal_symbol *m; | |
2118 | ||
2119 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2120 | if (m == NULL) | |
2121 | continue; | |
e62c965a | 2122 | |
a6d9a66e UW |
2123 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2124 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2125 | bp_overlay_event); |
2126 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2127 | |
69de3c6a PP |
2128 | if (overlay_debugging == ovly_auto) |
2129 | { | |
2130 | b->enable_state = bp_enabled; | |
2131 | overlay_events_enabled = 1; | |
2132 | } | |
2133 | else | |
2134 | { | |
2135 | b->enable_state = bp_disabled; | |
2136 | overlay_events_enabled = 0; | |
2137 | } | |
e62c965a PP |
2138 | } |
2139 | update_global_location_list (1); | |
2140 | } | |
2141 | ||
0fd8e87f UW |
2142 | static void |
2143 | create_longjmp_master_breakpoint (char *func_name) | |
2144 | { | |
6c95b8df | 2145 | struct program_space *pspace; |
0fd8e87f | 2146 | struct objfile *objfile; |
6c95b8df PA |
2147 | struct cleanup *old_chain; |
2148 | ||
2149 | old_chain = save_current_program_space (); | |
0fd8e87f | 2150 | |
6c95b8df | 2151 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2152 | ALL_OBJFILES (objfile) |
2153 | { | |
2154 | struct breakpoint *b; | |
2155 | struct minimal_symbol *m; | |
2156 | ||
2157 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2158 | continue; | |
2159 | ||
6c95b8df PA |
2160 | set_current_program_space (pspace); |
2161 | ||
0fd8e87f UW |
2162 | m = lookup_minimal_symbol_text (func_name, objfile); |
2163 | if (m == NULL) | |
2164 | continue; | |
2165 | ||
a6d9a66e UW |
2166 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2167 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2168 | bp_longjmp_master); |
2169 | b->addr_string = xstrdup (func_name); | |
2170 | b->enable_state = bp_disabled; | |
2171 | } | |
2172 | update_global_location_list (1); | |
6c95b8df PA |
2173 | |
2174 | do_cleanups (old_chain); | |
0fd8e87f UW |
2175 | } |
2176 | ||
aa7d318d TT |
2177 | /* Create a master std::terminate breakpoint. The actual function |
2178 | looked for is named FUNC_NAME. */ | |
2179 | static void | |
2180 | create_std_terminate_master_breakpoint (const char *func_name) | |
2181 | { | |
2182 | struct program_space *pspace; | |
2183 | struct objfile *objfile; | |
2184 | struct cleanup *old_chain; | |
2185 | ||
2186 | old_chain = save_current_program_space (); | |
2187 | ||
2188 | ALL_PSPACES (pspace) | |
2189 | ALL_OBJFILES (objfile) | |
2190 | { | |
2191 | struct breakpoint *b; | |
2192 | struct minimal_symbol *m; | |
2193 | ||
2194 | set_current_program_space (pspace); | |
2195 | ||
2196 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2197 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2198 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2199 | continue; | |
2200 | ||
2201 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2202 | SYMBOL_VALUE_ADDRESS (m), | |
2203 | bp_std_terminate_master); | |
2204 | b->addr_string = xstrdup (func_name); | |
2205 | b->enable_state = bp_disabled; | |
2206 | } | |
2207 | update_global_location_list (1); | |
2208 | ||
2209 | do_cleanups (old_chain); | |
2210 | } | |
2211 | ||
186c406b TT |
2212 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2213 | ||
2214 | void | |
2215 | create_exception_master_breakpoint (void) | |
2216 | { | |
2217 | struct objfile *objfile; | |
2218 | ||
2219 | ALL_OBJFILES (objfile) | |
2220 | { | |
2221 | struct minimal_symbol *debug_hook; | |
2222 | ||
2223 | debug_hook = lookup_minimal_symbol ("_Unwind_DebugHook", NULL, objfile); | |
2224 | if (debug_hook != NULL) | |
2225 | { | |
2226 | struct breakpoint *b; | |
2227 | CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (debug_hook); | |
2228 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2229 | ||
2230 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2231 | ¤t_target); | |
2232 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2233 | b->addr_string = xstrdup ("_Unwind_DebugHook"); | |
2234 | b->enable_state = bp_disabled; | |
2235 | } | |
2236 | } | |
2237 | ||
2238 | update_global_location_list (1); | |
2239 | } | |
2240 | ||
c906108c | 2241 | void |
fba45db2 | 2242 | update_breakpoints_after_exec (void) |
c906108c | 2243 | { |
c5aa993b JM |
2244 | struct breakpoint *b; |
2245 | struct breakpoint *temp; | |
876fa593 | 2246 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2247 | |
25b22b0a PA |
2248 | /* We're about to delete breakpoints from GDB's lists. If the |
2249 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2250 | writing the breakpoints' "shadow contents" back into memory. The | |
2251 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2252 | do that. Instead, the target is responsible from marking | |
2253 | breakpoints out as soon as it detects an exec. We don't do that | |
2254 | here instead, because there may be other attempts to delete | |
2255 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2256 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2257 | if (bploc->pspace == current_program_space) |
2258 | gdb_assert (!bploc->inserted); | |
c906108c SS |
2259 | |
2260 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2261 | { |
6c95b8df PA |
2262 | if (b->pspace != current_program_space) |
2263 | continue; | |
2264 | ||
c5aa993b JM |
2265 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
2266 | if (b->type == bp_shlib_event) | |
2267 | { | |
2268 | delete_breakpoint (b); | |
2269 | continue; | |
2270 | } | |
c906108c | 2271 | |
4efc6507 DE |
2272 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
2273 | if (b->type == bp_jit_event) | |
2274 | { | |
2275 | delete_breakpoint (b); | |
2276 | continue; | |
2277 | } | |
2278 | ||
1900040c | 2279 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2280 | as must overlay event and longjmp master breakpoints. */ |
2281 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2282 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2283 | || b->type == bp_exception_master) | |
c4093a6a JM |
2284 | { |
2285 | delete_breakpoint (b); | |
2286 | continue; | |
2287 | } | |
2288 | ||
c5aa993b JM |
2289 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2290 | if (b->type == bp_step_resume) | |
2291 | { | |
2292 | delete_breakpoint (b); | |
2293 | continue; | |
2294 | } | |
2295 | ||
611c83ae PA |
2296 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2297 | after an exec. */ | |
186c406b TT |
2298 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2299 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2300 | { |
2301 | delete_breakpoint (b); | |
2302 | continue; | |
2303 | } | |
2304 | ||
ce78b96d JB |
2305 | if (b->type == bp_catchpoint) |
2306 | { | |
2307 | /* For now, none of the bp_catchpoint breakpoints need to | |
2308 | do anything at this point. In the future, if some of | |
2309 | the catchpoints need to something, we will need to add | |
2310 | a new method, and call this method from here. */ | |
2311 | continue; | |
2312 | } | |
2313 | ||
c5aa993b JM |
2314 | /* bp_finish is a special case. The only way we ought to be able |
2315 | to see one of these when an exec() has happened, is if the user | |
2316 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2317 | carries them to the call-site of the current callee, by setting | |
2318 | a temporary bp there and resuming. But in this case, the finish | |
2319 | will carry them entirely through the vfork & exec. | |
2320 | ||
2321 | We don't want to allow a bp_finish to remain inserted now. But | |
2322 | we can't safely delete it, 'cause finish_command has a handle to | |
2323 | the bp on a bpstat, and will later want to delete it. There's a | |
2324 | chance (and I've seen it happen) that if we delete the bp_finish | |
2325 | here, that its storage will get reused by the time finish_command | |
2326 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2327 | We really must allow finish_command to delete a bp_finish. | |
2328 | ||
53a5351d JM |
2329 | In the absense of a general solution for the "how do we know |
2330 | it's safe to delete something others may have handles to?" | |
2331 | problem, what we'll do here is just uninsert the bp_finish, and | |
2332 | let finish_command delete it. | |
2333 | ||
2334 | (We know the bp_finish is "doomed" in the sense that it's | |
2335 | momentary, and will be deleted as soon as finish_command sees | |
2336 | the inferior stopped. So it doesn't matter that the bp's | |
2337 | address is probably bogus in the new a.out, unlike e.g., the | |
2338 | solib breakpoints.) */ | |
c5aa993b | 2339 | |
c5aa993b JM |
2340 | if (b->type == bp_finish) |
2341 | { | |
2342 | continue; | |
2343 | } | |
2344 | ||
2345 | /* Without a symbolic address, we have little hope of the | |
2346 | pre-exec() address meaning the same thing in the post-exec() | |
2347 | a.out. */ | |
2348 | if (b->addr_string == NULL) | |
2349 | { | |
2350 | delete_breakpoint (b); | |
2351 | continue; | |
2352 | } | |
c5aa993b | 2353 | } |
1900040c | 2354 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2355 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2356 | create_longjmp_master_breakpoint ("longjmp"); |
2357 | create_longjmp_master_breakpoint ("_longjmp"); | |
2358 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2359 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2360 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 2361 | create_exception_master_breakpoint (); |
c906108c SS |
2362 | } |
2363 | ||
2364 | int | |
fba45db2 | 2365 | detach_breakpoints (int pid) |
c906108c | 2366 | { |
876fa593 | 2367 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2368 | int val = 0; |
ce696e05 | 2369 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2370 | struct inferior *inf = current_inferior (); |
c5aa993b | 2371 | |
39f77062 | 2372 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2373 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2374 | |
6c95b8df | 2375 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2376 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2377 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2378 | { |
6c95b8df PA |
2379 | if (b->pspace != inf->pspace) |
2380 | continue; | |
2381 | ||
0bde7532 | 2382 | if (b->inserted) |
6c95b8df | 2383 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2384 | } |
d03285ec UW |
2385 | |
2386 | /* Detach single-step breakpoints as well. */ | |
2387 | detach_single_step_breakpoints (); | |
2388 | ||
ce696e05 | 2389 | do_cleanups (old_chain); |
3a1bae8e | 2390 | return val; |
c906108c SS |
2391 | } |
2392 | ||
6c95b8df PA |
2393 | /* Remove the breakpoint location B from the current address space. |
2394 | Note that this is used to detach breakpoints from a child fork. | |
2395 | When we get here, the child isn't in the inferior list, and neither | |
2396 | do we have objects to represent its address space --- we should | |
2397 | *not* look at b->pspace->aspace here. */ | |
2398 | ||
c906108c | 2399 | static int |
6c95b8df | 2400 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2401 | { |
2402 | int val; | |
c5aa993b | 2403 | |
2bdf28a0 JK |
2404 | /* B is never in moribund_locations by our callers. */ |
2405 | gdb_assert (b->owner != NULL); | |
2406 | ||
0bde7532 | 2407 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2408 | /* Permanent breakpoints cannot be inserted or removed. */ |
2409 | return 0; | |
2410 | ||
74960c60 VP |
2411 | /* The type of none suggests that owner is actually deleted. |
2412 | This should not ever happen. */ | |
2413 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2414 | |
2415 | if (b->loc_type == bp_loc_software_breakpoint | |
2416 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2417 | { |
c02f5703 MS |
2418 | /* "Normal" instruction breakpoint: either the standard |
2419 | trap-instruction bp (bp_breakpoint), or a | |
2420 | bp_hardware_breakpoint. */ | |
2421 | ||
2422 | /* First check to see if we have to handle an overlay. */ | |
2423 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2424 | || b->section == NULL |
2425 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2426 | { |
2427 | /* No overlay handling: just remove the breakpoint. */ | |
2428 | ||
0bde7532 | 2429 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2430 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2431 | else |
a6d9a66e | 2432 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2433 | } |
c906108c SS |
2434 | else |
2435 | { | |
c02f5703 MS |
2436 | /* This breakpoint is in an overlay section. |
2437 | Did we set a breakpoint at the LMA? */ | |
2438 | if (!overlay_events_enabled) | |
2439 | { | |
2440 | /* Yes -- overlay event support is not active, so we | |
2441 | should have set a breakpoint at the LMA. Remove it. | |
2442 | */ | |
c02f5703 MS |
2443 | /* Ignore any failures: if the LMA is in ROM, we will |
2444 | have already warned when we failed to insert it. */ | |
0bde7532 | 2445 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2446 | target_remove_hw_breakpoint (b->gdbarch, |
2447 | &b->overlay_target_info); | |
c02f5703 | 2448 | else |
a6d9a66e UW |
2449 | target_remove_breakpoint (b->gdbarch, |
2450 | &b->overlay_target_info); | |
c02f5703 MS |
2451 | } |
2452 | /* Did we set a breakpoint at the VMA? | |
2453 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2454 | if (b->inserted) |
c906108c | 2455 | { |
c02f5703 MS |
2456 | /* Yes -- remove it. Previously we did not bother to |
2457 | remove the breakpoint if the section had been | |
2458 | unmapped, but let's not rely on that being safe. We | |
2459 | don't know what the overlay manager might do. */ | |
0bde7532 | 2460 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2461 | val = target_remove_hw_breakpoint (b->gdbarch, |
2462 | &b->target_info); | |
aa67235e UW |
2463 | |
2464 | /* However, we should remove *software* breakpoints only | |
2465 | if the section is still mapped, or else we overwrite | |
2466 | wrong code with the saved shadow contents. */ | |
2467 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2468 | val = target_remove_breakpoint (b->gdbarch, |
2469 | &b->target_info); | |
aa67235e UW |
2470 | else |
2471 | val = 0; | |
c906108c | 2472 | } |
c02f5703 MS |
2473 | else |
2474 | { | |
2475 | /* No -- not inserted, so no need to remove. No error. */ | |
2476 | val = 0; | |
2477 | } | |
c906108c | 2478 | } |
879d1e6b UW |
2479 | |
2480 | /* In some cases, we might not be able to remove a breakpoint | |
2481 | in a shared library that has already been removed, but we | |
2482 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2483 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2484 | val = 0; |
2485 | ||
c906108c SS |
2486 | if (val) |
2487 | return val; | |
0bde7532 | 2488 | b->inserted = (is == mark_inserted); |
c906108c | 2489 | } |
a5606eee | 2490 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2491 | { |
0bde7532 | 2492 | b->inserted = (is == mark_inserted); |
0cf6dd15 TJB |
2493 | val = target_remove_watchpoint (b->address, b->length, |
2494 | b->watchpoint_type, b->owner->cond_exp); | |
2e70b7b9 | 2495 | |
c906108c | 2496 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2497 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2498 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2499 | b->owner->number); |
c906108c | 2500 | } |
ce78b96d JB |
2501 | else if (b->owner->type == bp_catchpoint |
2502 | && breakpoint_enabled (b->owner) | |
2503 | && !b->duplicate) | |
2504 | { | |
2505 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2506 | ||
2507 | val = b->owner->ops->remove (b->owner); | |
2508 | if (val) | |
2509 | return val; | |
2510 | b->inserted = (is == mark_inserted); | |
2511 | } | |
c906108c SS |
2512 | |
2513 | return 0; | |
2514 | } | |
2515 | ||
6c95b8df PA |
2516 | static int |
2517 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2518 | { | |
2519 | int ret; | |
2520 | struct cleanup *old_chain; | |
2521 | ||
2bdf28a0 JK |
2522 | /* B is never in moribund_locations by our callers. */ |
2523 | gdb_assert (b->owner != NULL); | |
2524 | ||
6c95b8df PA |
2525 | if (b->owner->enable_state == bp_permanent) |
2526 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2527 | return 0; | |
2528 | ||
2529 | /* The type of none suggests that owner is actually deleted. | |
2530 | This should not ever happen. */ | |
2531 | gdb_assert (b->owner->type != bp_none); | |
2532 | ||
2533 | old_chain = save_current_space_and_thread (); | |
2534 | ||
2535 | switch_to_program_space_and_thread (b->pspace); | |
2536 | ||
2537 | ret = remove_breakpoint_1 (b, is); | |
2538 | ||
2539 | do_cleanups (old_chain); | |
2540 | return ret; | |
2541 | } | |
2542 | ||
c906108c SS |
2543 | /* Clear the "inserted" flag in all breakpoints. */ |
2544 | ||
25b22b0a | 2545 | void |
fba45db2 | 2546 | mark_breakpoints_out (void) |
c906108c | 2547 | { |
876fa593 | 2548 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2549 | |
876fa593 | 2550 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2551 | if (bpt->pspace == current_program_space) |
2552 | bpt->inserted = 0; | |
c906108c SS |
2553 | } |
2554 | ||
53a5351d JM |
2555 | /* Clear the "inserted" flag in all breakpoints and delete any |
2556 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2557 | |
2558 | Plus other such housekeeping that has to be done for breakpoints | |
2559 | between runs. | |
2560 | ||
53a5351d JM |
2561 | Note: this function gets called at the end of a run (by |
2562 | generic_mourn_inferior) and when a run begins (by | |
2563 | init_wait_for_inferior). */ | |
c906108c SS |
2564 | |
2565 | ||
2566 | ||
2567 | void | |
fba45db2 | 2568 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2569 | { |
52f0bd74 | 2570 | struct breakpoint *b, *temp; |
876fa593 | 2571 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2572 | int ix; |
6c95b8df | 2573 | struct program_space *pspace = current_program_space; |
c906108c | 2574 | |
50c71eaf PA |
2575 | /* If breakpoint locations are shared across processes, then there's |
2576 | nothing to do. */ | |
2567c7d9 | 2577 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2578 | return; |
2579 | ||
876fa593 | 2580 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df | 2581 | { |
2bdf28a0 | 2582 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
6c95b8df PA |
2583 | if (bpt->pspace == pspace |
2584 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2585 | bpt->inserted = 0; |
6c95b8df | 2586 | } |
075f6582 | 2587 | |
c906108c | 2588 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2589 | { |
6c95b8df PA |
2590 | if (b->loc && b->loc->pspace != pspace) |
2591 | continue; | |
2592 | ||
c5aa993b JM |
2593 | switch (b->type) |
2594 | { | |
2595 | case bp_call_dummy: | |
c906108c | 2596 | |
c5aa993b | 2597 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2598 | cause problems when the inferior is rerun, so we better get |
2599 | rid of it. */ | |
2600 | ||
2601 | case bp_watchpoint_scope: | |
2602 | ||
2603 | /* Also get rid of scope breakpoints. */ | |
2604 | ||
2605 | case bp_shlib_event: | |
2606 | ||
2607 | /* Also remove solib event breakpoints. Their addresses may | |
2608 | have changed since the last time we ran the program. | |
2609 | Actually we may now be debugging against different target; | |
2610 | and so the solib backend that installed this breakpoint may | |
2611 | not be used in by the target. E.g., | |
2612 | ||
2613 | (gdb) file prog-linux | |
2614 | (gdb) run # native linux target | |
2615 | ... | |
2616 | (gdb) kill | |
2617 | (gdb) file prog-win.exe | |
2618 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2619 | */ | |
c906108c | 2620 | |
c5aa993b JM |
2621 | delete_breakpoint (b); |
2622 | break; | |
c906108c | 2623 | |
c5aa993b JM |
2624 | case bp_watchpoint: |
2625 | case bp_hardware_watchpoint: | |
2626 | case bp_read_watchpoint: | |
2627 | case bp_access_watchpoint: | |
c906108c | 2628 | |
c5aa993b JM |
2629 | /* Likewise for watchpoints on local expressions. */ |
2630 | if (b->exp_valid_block != NULL) | |
2631 | delete_breakpoint (b); | |
967af18d | 2632 | else if (context == inf_starting) |
c860120c PM |
2633 | { |
2634 | /* Reset val field to force reread of starting value | |
2635 | in insert_breakpoints. */ | |
2636 | if (b->val) | |
2637 | value_free (b->val); | |
2638 | b->val = NULL; | |
fa4727a6 | 2639 | b->val_valid = 0; |
c860120c | 2640 | } |
c5aa993b JM |
2641 | break; |
2642 | default: | |
c5aa993b JM |
2643 | break; |
2644 | } | |
2645 | } | |
1c5cfe86 PA |
2646 | |
2647 | /* Get rid of the moribund locations. */ | |
2648 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
f431efe5 | 2649 | decref_bp_location (&bpt); |
1c5cfe86 | 2650 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2651 | } |
2652 | ||
6c95b8df PA |
2653 | /* These functions concern about actual breakpoints inserted in the |
2654 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2655 | we need to hop over the bkpt --- so we check for address space | |
2656 | match, not program space. */ | |
2657 | ||
c2c6d25f JM |
2658 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2659 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2660 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2661 | permanent breakpoint. | |
2662 | - When continuing from a location with an ordinary breakpoint, we | |
2663 | actually single step once before calling insert_breakpoints. | |
2664 | - When continuing from a localion with a permanent breakpoint, we | |
2665 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2666 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2667 | |
c2c6d25f | 2668 | enum breakpoint_here |
6c95b8df | 2669 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2670 | { |
876fa593 | 2671 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2672 | int any_breakpoint_here = 0; |
c906108c | 2673 | |
876fa593 | 2674 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2675 | { |
2676 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2677 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2678 | continue; | |
2679 | ||
2bdf28a0 | 2680 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
468d015d | 2681 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2682 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2683 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2684 | aspace, pc)) | |
075f6582 DJ |
2685 | { |
2686 | if (overlay_debugging | |
2687 | && section_is_overlay (bpt->section) | |
2688 | && !section_is_mapped (bpt->section)) | |
2689 | continue; /* unmapped overlay -- can't be a match */ | |
2690 | else if (bpt->owner->enable_state == bp_permanent) | |
2691 | return permanent_breakpoint_here; | |
2692 | else | |
2693 | any_breakpoint_here = 1; | |
2694 | } | |
2695 | } | |
c906108c | 2696 | |
c2c6d25f | 2697 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2698 | } |
2699 | ||
1c5cfe86 PA |
2700 | /* Return true if there's a moribund breakpoint at PC. */ |
2701 | ||
2702 | int | |
6c95b8df | 2703 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2704 | { |
2705 | struct bp_location *loc; | |
2706 | int ix; | |
2707 | ||
2708 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2709 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2710 | aspace, pc)) | |
1c5cfe86 PA |
2711 | return 1; |
2712 | ||
2713 | return 0; | |
2714 | } | |
c2c6d25f | 2715 | |
c36b740a | 2716 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2717 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2718 | This does not check for single-step breakpoints, which are |
2719 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2720 | |
2721 | int | |
6c95b8df | 2722 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2723 | { |
876fa593 | 2724 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2725 | |
876fa593 | 2726 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2727 | { |
075f6582 DJ |
2728 | if (bpt->loc_type != bp_loc_software_breakpoint |
2729 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2730 | continue; | |
2731 | ||
2732 | if (bpt->inserted | |
6c95b8df PA |
2733 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2734 | aspace, pc)) | |
075f6582 DJ |
2735 | { |
2736 | if (overlay_debugging | |
2737 | && section_is_overlay (bpt->section) | |
2738 | && !section_is_mapped (bpt->section)) | |
2739 | continue; /* unmapped overlay -- can't be a match */ | |
2740 | else | |
2741 | return 1; | |
2742 | } | |
c5aa993b | 2743 | } |
c36b740a VP |
2744 | return 0; |
2745 | } | |
2746 | ||
2747 | /* Returns non-zero iff there's either regular breakpoint | |
2748 | or a single step breakpoint inserted at PC. */ | |
2749 | ||
2750 | int | |
6c95b8df | 2751 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2752 | { |
6c95b8df | 2753 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2754 | return 1; |
c906108c | 2755 | |
6c95b8df | 2756 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2757 | return 1; |
2758 | ||
c906108c SS |
2759 | return 0; |
2760 | } | |
2761 | ||
4fa8626c DJ |
2762 | /* This function returns non-zero iff there is a software breakpoint |
2763 | inserted at PC. */ | |
2764 | ||
2765 | int | |
6c95b8df | 2766 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2767 | { |
876fa593 | 2768 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c | 2769 | |
876fa593 | 2770 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2771 | { |
2772 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2773 | continue; | |
2774 | ||
0d381245 | 2775 | if (bpt->inserted |
6c95b8df PA |
2776 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2777 | aspace, pc)) | |
4fa8626c DJ |
2778 | { |
2779 | if (overlay_debugging | |
2780 | && section_is_overlay (bpt->section) | |
2781 | && !section_is_mapped (bpt->section)) | |
2782 | continue; /* unmapped overlay -- can't be a match */ | |
2783 | else | |
2784 | return 1; | |
2785 | } | |
2786 | } | |
2787 | ||
1aafd4da | 2788 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2789 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2790 | return 1; |
2791 | ||
4fa8626c DJ |
2792 | return 0; |
2793 | } | |
2794 | ||
9093389c PA |
2795 | int |
2796 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2797 | CORE_ADDR addr, ULONGEST len) | |
2798 | { | |
2799 | struct breakpoint *bpt; | |
2800 | ||
2801 | ALL_BREAKPOINTS (bpt) | |
2802 | { | |
2803 | struct bp_location *loc; | |
2804 | ||
2805 | if (bpt->type != bp_hardware_watchpoint | |
2806 | && bpt->type != bp_access_watchpoint) | |
2807 | continue; | |
2808 | ||
2809 | if (!breakpoint_enabled (bpt)) | |
2810 | continue; | |
2811 | ||
2812 | for (loc = bpt->loc; loc; loc = loc->next) | |
2813 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2814 | { | |
2815 | CORE_ADDR l, h; | |
2816 | ||
2817 | /* Check for intersection. */ | |
2818 | l = max (loc->address, addr); | |
2819 | h = min (loc->address + loc->length, addr + len); | |
2820 | if (l < h) | |
2821 | return 1; | |
2822 | } | |
2823 | } | |
2824 | return 0; | |
2825 | } | |
2826 | ||
075f6582 DJ |
2827 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2828 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2829 | |
2830 | int | |
6c95b8df PA |
2831 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2832 | ptid_t ptid) | |
c906108c | 2833 | { |
876fa593 | 2834 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2835 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2836 | int thread = -1; |
4a306c9a | 2837 | int task = 0; |
a6f1cd96 | 2838 | |
876fa593 | 2839 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2840 | { |
075f6582 DJ |
2841 | if (bpt->loc_type != bp_loc_software_breakpoint |
2842 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2843 | continue; | |
2844 | ||
2bdf28a0 | 2845 | /* ALL_BP_LOCATIONS bp_location has BPT->OWNER always non-NULL. */ |
a6f1cd96 JB |
2846 | if (!breakpoint_enabled (bpt->owner) |
2847 | && bpt->owner->enable_state != bp_permanent) | |
2848 | continue; | |
2849 | ||
6c95b8df PA |
2850 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2851 | aspace, pc)) | |
a6f1cd96 JB |
2852 | continue; |
2853 | ||
2854 | if (bpt->owner->thread != -1) | |
075f6582 | 2855 | { |
a6f1cd96 JB |
2856 | /* This is a thread-specific breakpoint. Check that ptid |
2857 | matches that thread. If thread hasn't been computed yet, | |
2858 | it is now time to do so. */ | |
2859 | if (thread == -1) | |
2860 | thread = pid_to_thread_id (ptid); | |
2861 | if (bpt->owner->thread != thread) | |
2862 | continue; | |
075f6582 | 2863 | } |
a6f1cd96 | 2864 | |
4a306c9a JB |
2865 | if (bpt->owner->task != 0) |
2866 | { | |
2867 | /* This is a task-specific breakpoint. Check that ptid | |
2868 | matches that task. If task hasn't been computed yet, | |
2869 | it is now time to do so. */ | |
2870 | if (task == 0) | |
2871 | task = ada_get_task_number (ptid); | |
2872 | if (bpt->owner->task != task) | |
2873 | continue; | |
2874 | } | |
2875 | ||
a6f1cd96 JB |
2876 | if (overlay_debugging |
2877 | && section_is_overlay (bpt->section) | |
2878 | && !section_is_mapped (bpt->section)) | |
2879 | continue; /* unmapped overlay -- can't be a match */ | |
2880 | ||
2881 | return 1; | |
c5aa993b | 2882 | } |
c906108c SS |
2883 | |
2884 | return 0; | |
2885 | } | |
c906108c | 2886 | \f |
c5aa993b | 2887 | |
c906108c SS |
2888 | /* bpstat stuff. External routines' interfaces are documented |
2889 | in breakpoint.h. */ | |
2890 | ||
2891 | int | |
fba45db2 | 2892 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2893 | { |
533be4dd | 2894 | return (ep->type == bp_catchpoint); |
c906108c SS |
2895 | } |
2896 | ||
f431efe5 PA |
2897 | /* Frees any storage that is part of a bpstat. Does not walk the |
2898 | 'next' chain. */ | |
2899 | ||
2900 | static void | |
198757a8 VP |
2901 | bpstat_free (bpstat bs) |
2902 | { | |
2903 | if (bs->old_val != NULL) | |
2904 | value_free (bs->old_val); | |
9add0f1b | 2905 | decref_counted_command_line (&bs->commands); |
f431efe5 | 2906 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
2907 | xfree (bs); |
2908 | } | |
2909 | ||
c906108c SS |
2910 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2911 | Also free any storage that is part of a bpstat. */ | |
2912 | ||
2913 | void | |
fba45db2 | 2914 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2915 | { |
2916 | bpstat p; | |
2917 | bpstat q; | |
2918 | ||
2919 | if (bsp == 0) | |
2920 | return; | |
2921 | p = *bsp; | |
2922 | while (p != NULL) | |
2923 | { | |
2924 | q = p->next; | |
198757a8 | 2925 | bpstat_free (p); |
c906108c SS |
2926 | p = q; |
2927 | } | |
2928 | *bsp = NULL; | |
2929 | } | |
2930 | ||
2931 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2932 | is part of the bpstat is copied as well. */ | |
2933 | ||
2934 | bpstat | |
fba45db2 | 2935 | bpstat_copy (bpstat bs) |
c906108c SS |
2936 | { |
2937 | bpstat p = NULL; | |
2938 | bpstat tmp; | |
2939 | bpstat retval = NULL; | |
2940 | ||
2941 | if (bs == NULL) | |
2942 | return bs; | |
2943 | ||
2944 | for (; bs != NULL; bs = bs->next) | |
2945 | { | |
2946 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2947 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2948 | incref_counted_command_line (tmp->commands); |
f431efe5 | 2949 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 2950 | if (bs->old_val != NULL) |
3c3185ac JK |
2951 | { |
2952 | tmp->old_val = value_copy (bs->old_val); | |
2953 | release_value (tmp->old_val); | |
2954 | } | |
31cc81e9 | 2955 | |
c906108c SS |
2956 | if (p == NULL) |
2957 | /* This is the first thing in the chain. */ | |
2958 | retval = tmp; | |
2959 | else | |
2960 | p->next = tmp; | |
2961 | p = tmp; | |
2962 | } | |
2963 | p->next = NULL; | |
2964 | return retval; | |
2965 | } | |
2966 | ||
2967 | /* Find the bpstat associated with this breakpoint */ | |
2968 | ||
2969 | bpstat | |
fba45db2 | 2970 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2971 | { |
c5aa993b JM |
2972 | if (bsp == NULL) |
2973 | return NULL; | |
c906108c | 2974 | |
c5aa993b JM |
2975 | for (; bsp != NULL; bsp = bsp->next) |
2976 | { | |
f431efe5 | 2977 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
2978 | return bsp; |
2979 | } | |
c906108c SS |
2980 | return NULL; |
2981 | } | |
2982 | ||
8671a17b | 2983 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2984 | at. *BSP upon return is a bpstat which points to the remaining |
2985 | breakpoints stopped at (but which is not guaranteed to be good for | |
2986 | anything but further calls to bpstat_num). | |
8671a17b PA |
2987 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2988 | Return -1 if stopped at a breakpoint that has been deleted since | |
2989 | we set it. | |
2990 | Return 1 otherwise. */ | |
c906108c SS |
2991 | |
2992 | int | |
8671a17b | 2993 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2994 | { |
2995 | struct breakpoint *b; | |
2996 | ||
2997 | if ((*bsp) == NULL) | |
2998 | return 0; /* No more breakpoint values */ | |
8671a17b | 2999 | |
4f8d1dc6 VP |
3000 | /* We assume we'll never have several bpstats that |
3001 | correspond to a single breakpoint -- otherwise, | |
3002 | this function might return the same number more | |
3003 | than once and this will look ugly. */ | |
f431efe5 | 3004 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3005 | *bsp = (*bsp)->next; |
3006 | if (b == NULL) | |
3007 | return -1; /* breakpoint that's been deleted since */ | |
3008 | ||
3009 | *num = b->number; /* We have its number */ | |
3010 | return 1; | |
c906108c SS |
3011 | } |
3012 | ||
3013 | /* Modify BS so that the actions will not be performed. */ | |
3014 | ||
3015 | void | |
fba45db2 | 3016 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3017 | { |
3018 | for (; bs != NULL; bs = bs->next) | |
3019 | { | |
9add0f1b | 3020 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3021 | bs->commands_left = NULL; |
c906108c SS |
3022 | if (bs->old_val != NULL) |
3023 | { | |
3024 | value_free (bs->old_val); | |
3025 | bs->old_val = NULL; | |
3026 | } | |
3027 | } | |
3028 | } | |
3029 | ||
f3b1572e PA |
3030 | /* Called when a command is about to proceed the inferior. */ |
3031 | ||
3032 | static void | |
3033 | breakpoint_about_to_proceed (void) | |
3034 | { | |
3035 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3036 | { | |
3037 | struct thread_info *tp = inferior_thread (); | |
3038 | ||
3039 | /* Allow inferior function calls in breakpoint commands to not | |
3040 | interrupt the command list. When the call finishes | |
3041 | successfully, the inferior will be standing at the same | |
3042 | breakpoint as if nothing happened. */ | |
16c381f0 | 3043 | if (tp->control.in_infcall) |
f3b1572e PA |
3044 | return; |
3045 | } | |
3046 | ||
3047 | breakpoint_proceeded = 1; | |
3048 | } | |
3049 | ||
c906108c | 3050 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 3051 | static void |
4efb68b1 | 3052 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3053 | { |
3054 | executing_breakpoint_commands = 0; | |
3055 | } | |
3056 | ||
3057 | /* Execute all the commands associated with all the breakpoints at this | |
3058 | location. Any of these commands could cause the process to proceed | |
3059 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 3060 | the global "breakpoint_proceeded" after each command. |
c906108c | 3061 | |
347bddb7 PA |
3062 | Returns true if a breakpoint command resumed the inferior. In that |
3063 | case, it is the caller's responsibility to recall it again with the | |
3064 | bpstat of the current thread. */ | |
3065 | ||
3066 | static int | |
3067 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3068 | { |
3069 | bpstat bs; | |
3070 | struct cleanup *old_chain; | |
347bddb7 | 3071 | int again = 0; |
c906108c SS |
3072 | |
3073 | /* Avoid endless recursion if a `source' command is contained | |
3074 | in bs->commands. */ | |
3075 | if (executing_breakpoint_commands) | |
347bddb7 | 3076 | return 0; |
c906108c SS |
3077 | |
3078 | executing_breakpoint_commands = 1; | |
3079 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3080 | ||
c906108c SS |
3081 | /* This pointer will iterate over the list of bpstat's. */ |
3082 | bs = *bsp; | |
3083 | ||
3084 | breakpoint_proceeded = 0; | |
3085 | for (; bs != NULL; bs = bs->next) | |
3086 | { | |
9add0f1b | 3087 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3088 | struct command_line *cmd; |
3089 | struct cleanup *this_cmd_tree_chain; | |
3090 | ||
3091 | /* Take ownership of the BSP's command tree, if it has one. | |
3092 | ||
3093 | The command tree could legitimately contain commands like | |
3094 | 'step' and 'next', which call clear_proceed_status, which | |
3095 | frees stop_bpstat's command tree. To make sure this doesn't | |
3096 | free the tree we're executing out from under us, we need to | |
3097 | take ownership of the tree ourselves. Since a given bpstat's | |
3098 | commands are only executed once, we don't need to copy it; we | |
3099 | can clear the pointer in the bpstat, and make sure we free | |
3100 | the tree when we're done. */ | |
9add0f1b TT |
3101 | ccmd = bs->commands; |
3102 | bs->commands = NULL; | |
3103 | this_cmd_tree_chain | |
3104 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3105 | cmd = bs->commands_left; | |
3106 | bs->commands_left = NULL; | |
6c50ab1c | 3107 | |
c906108c SS |
3108 | while (cmd != NULL) |
3109 | { | |
3110 | execute_control_command (cmd); | |
3111 | ||
3112 | if (breakpoint_proceeded) | |
3113 | break; | |
3114 | else | |
3115 | cmd = cmd->next; | |
3116 | } | |
6c50ab1c JB |
3117 | |
3118 | /* We can free this command tree now. */ | |
3119 | do_cleanups (this_cmd_tree_chain); | |
3120 | ||
c906108c | 3121 | if (breakpoint_proceeded) |
32c1e744 VP |
3122 | { |
3123 | if (target_can_async_p ()) | |
347bddb7 PA |
3124 | /* If we are in async mode, then the target might be still |
3125 | running, not stopped at any breakpoint, so nothing for | |
3126 | us to do here -- just return to the event loop. */ | |
3127 | ; | |
32c1e744 VP |
3128 | else |
3129 | /* In sync mode, when execute_control_command returns | |
3130 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3131 | Breakpoint commands for that stop were not run, since |
3132 | execute_command does not run breakpoint commands -- | |
3133 | only command_line_handler does, but that one is not | |
3134 | involved in execution of breakpoint commands. So, we | |
3135 | can now execute breakpoint commands. It should be | |
3136 | noted that making execute_command do bpstat actions is | |
3137 | not an option -- in this case we'll have recursive | |
3138 | invocation of bpstat for each breakpoint with a | |
3139 | command, and can easily blow up GDB stack. Instead, we | |
3140 | return true, which will trigger the caller to recall us | |
3141 | with the new stop_bpstat. */ | |
3142 | again = 1; | |
3143 | break; | |
32c1e744 | 3144 | } |
c906108c | 3145 | } |
c2b8ed2c | 3146 | do_cleanups (old_chain); |
347bddb7 PA |
3147 | return again; |
3148 | } | |
3149 | ||
3150 | void | |
3151 | bpstat_do_actions (void) | |
3152 | { | |
3153 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3154 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3155 | && target_has_execution | |
3156 | && !is_exited (inferior_ptid) | |
3157 | && !is_executing (inferior_ptid)) | |
3158 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3159 | and only return when it is stopped at the next breakpoint, we | |
3160 | keep doing breakpoint actions until it returns false to | |
3161 | indicate the inferior was not resumed. */ | |
16c381f0 | 3162 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3163 | break; |
c906108c SS |
3164 | } |
3165 | ||
fa4727a6 DJ |
3166 | /* Print out the (old or new) value associated with a watchpoint. */ |
3167 | ||
3168 | static void | |
3169 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3170 | { | |
3171 | if (val == NULL) | |
3172 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3173 | else | |
79a45b7d TT |
3174 | { |
3175 | struct value_print_options opts; | |
3176 | get_user_print_options (&opts); | |
3177 | value_print (val, stream, &opts); | |
3178 | } | |
fa4727a6 DJ |
3179 | } |
3180 | ||
e514a9d6 | 3181 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3182 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3183 | by having it set different print_it values. |
3184 | ||
3185 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3186 | through the bpstat list of things causing this stop, calling the | |
3187 | print_bp_stop_message function on each one. The behavior of the | |
3188 | print_bp_stop_message function depends on the print_it field of | |
3189 | bpstat. If such field so indicates, call this function here. | |
3190 | ||
3191 | Return values from this routine (ultimately used by bpstat_print() | |
3192 | and normal_stop() to decide what to do): | |
3193 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3194 | don't print anything else. | |
3195 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3196 | that something to be followed by a location. | |
3197 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3198 | that something to be followed by a location. | |
3199 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3200 | analysis. */ | |
c906108c | 3201 | |
917317f4 | 3202 | static enum print_stop_action |
fba45db2 | 3203 | print_it_typical (bpstat bs) |
c906108c | 3204 | { |
f7545552 | 3205 | struct cleanup *old_chain; |
4f8d1dc6 | 3206 | struct breakpoint *b; |
89f9893c | 3207 | const struct bp_location *bl; |
8b93c638 | 3208 | struct ui_stream *stb; |
f7545552 TT |
3209 | int bp_temp = 0; |
3210 | enum print_stop_action result; | |
3211 | ||
c906108c SS |
3212 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3213 | which has since been deleted. */ | |
e514a9d6 | 3214 | if (bs->breakpoint_at == NULL) |
917317f4 | 3215 | return PRINT_UNKNOWN; |
2bdf28a0 | 3216 | |
f431efe5 PA |
3217 | gdb_assert (bs->bp_location_at != NULL); |
3218 | ||
3219 | bl = bs->bp_location_at; | |
3220 | b = bs->breakpoint_at; | |
c906108c | 3221 | |
f7545552 TT |
3222 | stb = ui_out_stream_new (uiout); |
3223 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3224 | ||
4f8d1dc6 | 3225 | switch (b->type) |
c906108c | 3226 | { |
e514a9d6 JM |
3227 | case bp_breakpoint: |
3228 | case bp_hardware_breakpoint: | |
f431efe5 | 3229 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3230 | if (bl->address != bl->requested_address) |
3231 | breakpoint_adjustment_warning (bl->requested_address, | |
3232 | bl->address, | |
4f8d1dc6 VP |
3233 | b->number, 1); |
3234 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3235 | if (bp_temp) |
3236 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3237 | else | |
3238 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3239 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3240 | { |
3241 | ui_out_field_string (uiout, "reason", | |
3242 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3243 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3244 | } | |
4f8d1dc6 | 3245 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3246 | ui_out_text (uiout, ", "); |
f7545552 | 3247 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3248 | break; |
3249 | ||
3250 | case bp_shlib_event: | |
917317f4 JM |
3251 | /* Did we stop because the user set the stop_on_solib_events |
3252 | variable? (If so, we report this as a generic, "Stopped due | |
3253 | to shlib event" message.) */ | |
a3f17187 | 3254 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3255 | result = PRINT_NOTHING; |
e514a9d6 JM |
3256 | break; |
3257 | ||
c4093a6a JM |
3258 | case bp_thread_event: |
3259 | /* Not sure how we will get here. | |
3260 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 3261 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3262 | result = PRINT_NOTHING; |
c4093a6a JM |
3263 | break; |
3264 | ||
1900040c MS |
3265 | case bp_overlay_event: |
3266 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 3267 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3268 | result = PRINT_NOTHING; |
1900040c MS |
3269 | break; |
3270 | ||
0fd8e87f UW |
3271 | case bp_longjmp_master: |
3272 | /* These should never be enabled. */ | |
3273 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3274 | result = PRINT_NOTHING; | |
3275 | break; | |
3276 | ||
aa7d318d TT |
3277 | case bp_std_terminate_master: |
3278 | /* These should never be enabled. */ | |
3279 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3280 | result = PRINT_NOTHING; | |
3281 | break; | |
3282 | ||
186c406b TT |
3283 | case bp_exception_master: |
3284 | /* These should never be enabled. */ | |
3285 | printf_filtered (_("Exception Master Breakpoint: gdb should not stop!\n")); | |
3286 | result = PRINT_NOTHING; | |
3287 | break; | |
3288 | ||
e514a9d6 JM |
3289 | case bp_watchpoint: |
3290 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3291 | annotate_watchpoint (b->number); |
3292 | if (ui_out_is_mi_like_p (uiout)) | |
3293 | ui_out_field_string | |
3294 | (uiout, "reason", | |
3295 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3296 | mention (b); | |
f7545552 | 3297 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3298 | ui_out_text (uiout, "\nOld value = "); |
3299 | watchpoint_value_print (bs->old_val, stb->stream); | |
3300 | ui_out_field_stream (uiout, "old", stb); | |
3301 | ui_out_text (uiout, "\nNew value = "); | |
3302 | watchpoint_value_print (b->val, stb->stream); | |
3303 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3304 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3305 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3306 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3307 | break; |
3308 | ||
3309 | case bp_read_watchpoint: | |
9dc5e2a9 | 3310 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3311 | ui_out_field_string |
3312 | (uiout, "reason", | |
3313 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3314 | mention (b); |
f7545552 | 3315 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3316 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3317 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3318 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3319 | ui_out_text (uiout, "\n"); |
f7545552 | 3320 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3321 | break; |
3322 | ||
3323 | case bp_access_watchpoint: | |
fa4727a6 | 3324 | if (bs->old_val != NULL) |
8b93c638 | 3325 | { |
4f8d1dc6 | 3326 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3327 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3328 | ui_out_field_string |
3329 | (uiout, "reason", | |
3330 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3331 | mention (b); |
f7545552 | 3332 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3333 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3334 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3335 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3336 | ui_out_text (uiout, "\nNew value = "); |
3337 | } | |
3338 | else | |
3339 | { | |
4f8d1dc6 | 3340 | mention (b); |
9dc5e2a9 | 3341 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3342 | ui_out_field_string |
3343 | (uiout, "reason", | |
3344 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3345 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3346 | ui_out_text (uiout, "\nValue = "); |
3347 | } | |
fa4727a6 | 3348 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3349 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3350 | ui_out_text (uiout, "\n"); |
f7545552 | 3351 | result = PRINT_UNKNOWN; |
e514a9d6 | 3352 | break; |
4ce44c66 | 3353 | |
e514a9d6 JM |
3354 | /* Fall through, we don't deal with these types of breakpoints |
3355 | here. */ | |
3356 | ||
11cf8741 | 3357 | case bp_finish: |
9dc5e2a9 | 3358 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3359 | ui_out_field_string |
3360 | (uiout, "reason", | |
3361 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3362 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3363 | break; |
3364 | ||
e514a9d6 | 3365 | case bp_until: |
9dc5e2a9 | 3366 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3367 | ui_out_field_string |
3368 | (uiout, "reason", | |
3369 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3370 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3371 | break; |
3372 | ||
c2d11a7d | 3373 | case bp_none: |
e514a9d6 JM |
3374 | case bp_longjmp: |
3375 | case bp_longjmp_resume: | |
186c406b TT |
3376 | case bp_exception: |
3377 | case bp_exception_resume: | |
e514a9d6 | 3378 | case bp_step_resume: |
e514a9d6 JM |
3379 | case bp_watchpoint_scope: |
3380 | case bp_call_dummy: | |
aa7d318d | 3381 | case bp_std_terminate: |
1042e4c0 | 3382 | case bp_tracepoint: |
7a697b8d | 3383 | case bp_fast_tracepoint: |
4efc6507 | 3384 | case bp_jit_event: |
e514a9d6 | 3385 | default: |
f7545552 TT |
3386 | result = PRINT_UNKNOWN; |
3387 | break; | |
e514a9d6 | 3388 | } |
f7545552 TT |
3389 | |
3390 | do_cleanups (old_chain); | |
3391 | return result; | |
e514a9d6 JM |
3392 | } |
3393 | ||
3394 | /* Generic routine for printing messages indicating why we | |
3395 | stopped. The behavior of this function depends on the value | |
3396 | 'print_it' in the bpstat structure. Under some circumstances we | |
3397 | may decide not to print anything here and delegate the task to | |
3398 | normal_stop(). */ | |
3399 | ||
3400 | static enum print_stop_action | |
3401 | print_bp_stop_message (bpstat bs) | |
3402 | { | |
3403 | switch (bs->print_it) | |
3404 | { | |
3405 | case print_it_noop: | |
3406 | /* Nothing should be printed for this bpstat entry. */ | |
3407 | return PRINT_UNKNOWN; | |
3408 | break; | |
3409 | ||
3410 | case print_it_done: | |
3411 | /* We still want to print the frame, but we already printed the | |
3412 | relevant messages. */ | |
3413 | return PRINT_SRC_AND_LOC; | |
3414 | break; | |
3415 | ||
3416 | case print_it_normal: | |
4f8d1dc6 | 3417 | { |
f431efe5 PA |
3418 | struct breakpoint *b = bs->breakpoint_at; |
3419 | ||
4f8d1dc6 VP |
3420 | /* Normal case. Call the breakpoint's print_it method, or |
3421 | print_it_typical. */ | |
3422 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3423 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3424 | return b->ops->print_it (b); | |
3425 | else | |
3426 | return print_it_typical (bs); | |
3427 | } | |
3428 | break; | |
3086aeae | 3429 | |
e514a9d6 | 3430 | default: |
8e65ff28 | 3431 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3432 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3433 | break; |
c906108c | 3434 | } |
c906108c SS |
3435 | } |
3436 | ||
e514a9d6 JM |
3437 | /* Print a message indicating what happened. This is called from |
3438 | normal_stop(). The input to this routine is the head of the bpstat | |
3439 | list - a list of the eventpoints that caused this stop. This | |
3440 | routine calls the generic print routine for printing a message | |
3441 | about reasons for stopping. This will print (for example) the | |
3442 | "Breakpoint n," part of the output. The return value of this | |
3443 | routine is one of: | |
c906108c | 3444 | |
917317f4 JM |
3445 | PRINT_UNKNOWN: Means we printed nothing |
3446 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3447 | code to print the location. An example is |
3448 | "Breakpoint 1, " which should be followed by | |
3449 | the location. | |
917317f4 | 3450 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3451 | to also print the location part of the message. |
3452 | An example is the catch/throw messages, which | |
917317f4 JM |
3453 | don't require a location appended to the end. |
3454 | PRINT_NOTHING: We have done some printing and we don't need any | |
3455 | further info to be printed.*/ | |
c906108c | 3456 | |
917317f4 | 3457 | enum print_stop_action |
fba45db2 | 3458 | bpstat_print (bpstat bs) |
c906108c SS |
3459 | { |
3460 | int val; | |
c5aa993b | 3461 | |
c906108c | 3462 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3463 | (Currently all watchpoints go on the bpstat whether hit or not. |
3464 | That probably could (should) be changed, provided care is taken | |
c906108c | 3465 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3466 | for (; bs; bs = bs->next) |
3467 | { | |
3468 | val = print_bp_stop_message (bs); | |
3469 | if (val == PRINT_SRC_ONLY | |
3470 | || val == PRINT_SRC_AND_LOC | |
3471 | || val == PRINT_NOTHING) | |
3472 | return val; | |
3473 | } | |
c906108c | 3474 | |
e514a9d6 JM |
3475 | /* We reached the end of the chain, or we got a null BS to start |
3476 | with and nothing was printed. */ | |
917317f4 | 3477 | return PRINT_UNKNOWN; |
c906108c SS |
3478 | } |
3479 | ||
3480 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3481 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3482 | The argument is a "struct expression *" that has been cast to char * to | |
3483 | make it pass through catch_errors. */ | |
3484 | ||
3485 | static int | |
4efb68b1 | 3486 | breakpoint_cond_eval (void *exp) |
c906108c | 3487 | { |
278cd55f | 3488 | struct value *mark = value_mark (); |
c5aa993b | 3489 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3490 | |
c906108c SS |
3491 | value_free_to_mark (mark); |
3492 | return i; | |
3493 | } | |
3494 | ||
5760d0ab | 3495 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3496 | |
3497 | static bpstat | |
5760d0ab | 3498 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3499 | { |
3500 | bpstat bs; | |
3501 | ||
3502 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3503 | bs->next = NULL; |
3504 | **bs_link_pointer = bs; | |
3505 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3506 | bs->breakpoint_at = bl->owner; |
3507 | bs->bp_location_at = bl; | |
3508 | incref_bp_location (bl); | |
c906108c SS |
3509 | /* If the condition is false, etc., don't do the commands. */ |
3510 | bs->commands = NULL; | |
9add0f1b | 3511 | bs->commands_left = NULL; |
c906108c SS |
3512 | bs->old_val = NULL; |
3513 | bs->print_it = print_it_normal; | |
3514 | return bs; | |
3515 | } | |
3516 | \f | |
d983da9c DJ |
3517 | /* The target has stopped with waitstatus WS. Check if any hardware |
3518 | watchpoints have triggered, according to the target. */ | |
3519 | ||
3520 | int | |
3521 | watchpoints_triggered (struct target_waitstatus *ws) | |
3522 | { | |
d92524f1 | 3523 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3524 | CORE_ADDR addr; |
3525 | struct breakpoint *b; | |
3526 | ||
3527 | if (!stopped_by_watchpoint) | |
3528 | { | |
3529 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3530 | as not triggered. */ | |
3531 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3532 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3533 | b->watchpoint_triggered = watch_triggered_no; |
3534 | ||
3535 | return 0; | |
3536 | } | |
3537 | ||
3538 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3539 | { | |
3540 | /* We were stopped by a watchpoint, but we don't know where. | |
3541 | Mark all watchpoints as unknown. */ | |
3542 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3543 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3544 | b->watchpoint_triggered = watch_triggered_unknown; |
3545 | ||
3546 | return stopped_by_watchpoint; | |
3547 | } | |
3548 | ||
3549 | /* The target could report the data address. Mark watchpoints | |
3550 | affected by this data address as triggered, and all others as not | |
3551 | triggered. */ | |
3552 | ||
3553 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3554 | if (is_hardware_watchpoint (b)) |
d983da9c | 3555 | { |
a5606eee | 3556 | struct bp_location *loc; |
d983da9c DJ |
3557 | |
3558 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3559 | for (loc = b->loc; loc; loc = loc->next) |
3560 | /* Exact match not required. Within range is | |
3561 | sufficient. */ | |
5009afc5 AS |
3562 | if (target_watchpoint_addr_within_range (¤t_target, |
3563 | addr, loc->address, | |
3564 | loc->length)) | |
a5606eee VP |
3565 | { |
3566 | b->watchpoint_triggered = watch_triggered_yes; | |
3567 | break; | |
3568 | } | |
d983da9c DJ |
3569 | } |
3570 | ||
3571 | return 1; | |
3572 | } | |
3573 | ||
c906108c SS |
3574 | /* Possible return values for watchpoint_check (this can't be an enum |
3575 | because of check_errors). */ | |
3576 | /* The watchpoint has been deleted. */ | |
3577 | #define WP_DELETED 1 | |
3578 | /* The value has changed. */ | |
3579 | #define WP_VALUE_CHANGED 2 | |
3580 | /* The value has not changed. */ | |
3581 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3582 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3583 | #define WP_IGNORE 4 | |
c906108c SS |
3584 | |
3585 | #define BP_TEMPFLAG 1 | |
3586 | #define BP_HARDWAREFLAG 2 | |
3587 | ||
553e4c11 JB |
3588 | /* Evaluate watchpoint condition expression and check if its value changed. |
3589 | ||
3590 | P should be a pointer to struct bpstat, but is defined as a void * | |
3591 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3592 | |
3593 | static int | |
4efb68b1 | 3594 | watchpoint_check (void *p) |
c906108c SS |
3595 | { |
3596 | bpstat bs = (bpstat) p; | |
3597 | struct breakpoint *b; | |
3598 | struct frame_info *fr; | |
3599 | int within_current_scope; | |
3600 | ||
f431efe5 | 3601 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3602 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3603 | b = bs->breakpoint_at; |
c906108c | 3604 | |
f6bc2008 PA |
3605 | /* If this is a local watchpoint, we only want to check if the |
3606 | watchpoint frame is in scope if the current thread is the thread | |
3607 | that was used to create the watchpoint. */ | |
3608 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3609 | return WP_IGNORE; |
f6bc2008 | 3610 | |
c906108c SS |
3611 | if (b->exp_valid_block == NULL) |
3612 | within_current_scope = 1; | |
3613 | else | |
3614 | { | |
edb3359d DJ |
3615 | struct frame_info *frame = get_current_frame (); |
3616 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3617 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3618 | ||
a0f49112 JK |
3619 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3620 | in the function but the stack frame has already been invalidated. | |
3621 | Since we can't rely on the values of local variables after the | |
3622 | stack has been destroyed, we are treating the watchpoint in that | |
3623 | state as `not changed' without further checking. Don't mark | |
3624 | watchpoints as changed if the current frame is in an epilogue - | |
3625 | even if they are in some other frame, our view of the stack | |
3626 | is likely to be wrong and frame_find_by_id could error out. */ | |
3627 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
60e1c644 | 3628 | return WP_IGNORE; |
a0f49112 | 3629 | |
101dcfbe | 3630 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3631 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3632 | |
3633 | /* If we've gotten confused in the unwinder, we might have | |
3634 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3635 | if (within_current_scope) |
3636 | { | |
3637 | struct symbol *function; | |
3638 | ||
3639 | function = get_frame_function (fr); | |
3640 | if (function == NULL | |
3641 | || !contained_in (b->exp_valid_block, | |
3642 | SYMBOL_BLOCK_VALUE (function))) | |
3643 | within_current_scope = 0; | |
3644 | } | |
69fbadd5 | 3645 | |
edb3359d | 3646 | if (within_current_scope) |
c906108c SS |
3647 | /* If we end up stopping, the current frame will get selected |
3648 | in normal_stop. So this call to select_frame won't affect | |
3649 | the user. */ | |
0f7d239c | 3650 | select_frame (fr); |
c906108c | 3651 | } |
c5aa993b | 3652 | |
c906108c SS |
3653 | if (within_current_scope) |
3654 | { | |
3655 | /* We use value_{,free_to_}mark because it could be a | |
3656 | *long* time before we return to the command level and | |
c5aa993b JM |
3657 | call free_all_values. We can't call free_all_values because |
3658 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3659 | |
0cf6dd15 | 3660 | int pc = 0; |
278cd55f | 3661 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3662 | struct value *new_val; |
3663 | ||
0cf6dd15 | 3664 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 TJB |
3665 | |
3666 | /* We use value_equal_contents instead of value_equal because the latter | |
3667 | coerces an array to a pointer, thus comparing just the address of the | |
3668 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3669 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3670 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3671 | { |
fa4727a6 DJ |
3672 | if (new_val != NULL) |
3673 | { | |
3674 | release_value (new_val); | |
3675 | value_free_to_mark (mark); | |
3676 | } | |
c906108c SS |
3677 | bs->old_val = b->val; |
3678 | b->val = new_val; | |
fa4727a6 | 3679 | b->val_valid = 1; |
c906108c SS |
3680 | return WP_VALUE_CHANGED; |
3681 | } | |
3682 | else | |
3683 | { | |
60e1c644 | 3684 | /* Nothing changed. */ |
c906108c | 3685 | value_free_to_mark (mark); |
c906108c SS |
3686 | return WP_VALUE_NOT_CHANGED; |
3687 | } | |
3688 | } | |
3689 | else | |
3690 | { | |
3691 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3692 | if we temporarily ignored the watchpoint, then when |
3693 | we reenter the block in which it is valid it contains | |
3694 | garbage (in the case of a function, it may have two | |
3695 | garbage values, one before and one after the prologue). | |
3696 | So we can't even detect the first assignment to it and | |
3697 | watch after that (since the garbage may or may not equal | |
3698 | the first value assigned). */ | |
4ce44c66 JM |
3699 | /* We print all the stop information in print_it_typical(), but |
3700 | in this case, by the time we call print_it_typical() this bp | |
3701 | will be deleted already. So we have no choice but print the | |
3702 | information here. */ | |
9dc5e2a9 | 3703 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3704 | ui_out_field_string |
3705 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3706 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3707 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3708 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3709 | which its expression is valid.\n"); | |
4ce44c66 | 3710 | |
c906108c | 3711 | if (b->related_breakpoint) |
60e1c644 PA |
3712 | { |
3713 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3714 | b->related_breakpoint->related_breakpoint = NULL; | |
3715 | b->related_breakpoint = NULL; | |
3716 | } | |
b5de0fa7 | 3717 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3718 | |
3719 | return WP_DELETED; | |
3720 | } | |
3721 | } | |
3722 | ||
18a18393 VP |
3723 | /* Return true if it looks like target has stopped due to hitting |
3724 | breakpoint location BL. This function does not check if we | |
3725 | should stop, only if BL explains the stop. */ | |
3726 | static int | |
6c95b8df PA |
3727 | bpstat_check_location (const struct bp_location *bl, |
3728 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3729 | { |
3730 | struct breakpoint *b = bl->owner; | |
3731 | ||
2bdf28a0 JK |
3732 | /* BL is from existing struct breakpoint. */ |
3733 | gdb_assert (b != NULL); | |
3734 | ||
e8595ef6 SS |
3735 | /* By definition, the inferior does not report stops at |
3736 | tracepoints. */ | |
d77f58be | 3737 | if (is_tracepoint (b)) |
e8595ef6 SS |
3738 | return 0; |
3739 | ||
cc60f2e3 | 3740 | if (!is_watchpoint (b) |
18a18393 | 3741 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3742 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3743 | { |
6c95b8df PA |
3744 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3745 | aspace, bp_addr)) | |
18a18393 VP |
3746 | return 0; |
3747 | if (overlay_debugging /* unmapped overlay section */ | |
3748 | && section_is_overlay (bl->section) | |
3749 | && !section_is_mapped (bl->section)) | |
3750 | return 0; | |
3751 | } | |
cc60f2e3 | 3752 | |
18a18393 VP |
3753 | /* Continuable hardware watchpoints are treated as non-existent if the |
3754 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3755 | some data address). Otherwise gdb won't stop on a break instruction | |
3756 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3757 | been defined. Also skip watchpoints which we know did not trigger | |
3758 | (did not match the data address). */ | |
cc60f2e3 PA |
3759 | |
3760 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3761 | && b->watchpoint_triggered == watch_triggered_no) |
3762 | return 0; | |
3763 | ||
3764 | if (b->type == bp_hardware_breakpoint) | |
3765 | { | |
3766 | if (bl->address != bp_addr) | |
3767 | return 0; | |
3768 | if (overlay_debugging /* unmapped overlay section */ | |
3769 | && section_is_overlay (bl->section) | |
3770 | && !section_is_mapped (bl->section)) | |
3771 | return 0; | |
3772 | } | |
ce78b96d | 3773 | |
ce78b96d JB |
3774 | if (b->type == bp_catchpoint) |
3775 | { | |
3776 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3777 | if (!b->ops->breakpoint_hit (b)) | |
3778 | return 0; | |
3779 | } | |
3780 | ||
18a18393 VP |
3781 | return 1; |
3782 | } | |
3783 | ||
3784 | /* If BS refers to a watchpoint, determine if the watched values | |
3785 | has actually changed, and we should stop. If not, set BS->stop | |
3786 | to 0. */ | |
3787 | static void | |
3788 | bpstat_check_watchpoint (bpstat bs) | |
3789 | { | |
2bdf28a0 JK |
3790 | const struct bp_location *bl; |
3791 | struct breakpoint *b; | |
3792 | ||
3793 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3794 | bl = bs->bp_location_at; |
2bdf28a0 | 3795 | gdb_assert (bl != NULL); |
f431efe5 | 3796 | b = bs->breakpoint_at; |
2bdf28a0 | 3797 | gdb_assert (b != NULL); |
18a18393 | 3798 | |
cc60f2e3 | 3799 | if (is_watchpoint (b)) |
18a18393 | 3800 | { |
18a18393 VP |
3801 | int must_check_value = 0; |
3802 | ||
3803 | if (b->type == bp_watchpoint) | |
3804 | /* For a software watchpoint, we must always check the | |
3805 | watched value. */ | |
3806 | must_check_value = 1; | |
3807 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3808 | /* We have a hardware watchpoint (read, write, or access) | |
3809 | and the target earlier reported an address watched by | |
3810 | this watchpoint. */ | |
3811 | must_check_value = 1; | |
3812 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3813 | && b->type == bp_hardware_watchpoint) | |
3814 | /* We were stopped by a hardware watchpoint, but the target could | |
3815 | not report the data address. We must check the watchpoint's | |
3816 | value. Access and read watchpoints are out of luck; without | |
3817 | a data address, we can't figure it out. */ | |
3818 | must_check_value = 1; | |
3819 | ||
3820 | if (must_check_value) | |
3821 | { | |
3822 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3823 | b->number); | |
3824 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3825 | int e = catch_errors (watchpoint_check, bs, message, | |
3826 | RETURN_MASK_ALL); | |
3827 | do_cleanups (cleanups); | |
3828 | switch (e) | |
3829 | { | |
3830 | case WP_DELETED: | |
3831 | /* We've already printed what needs to be printed. */ | |
3832 | bs->print_it = print_it_done; | |
3833 | /* Stop. */ | |
3834 | break; | |
60e1c644 PA |
3835 | case WP_IGNORE: |
3836 | bs->print_it = print_it_noop; | |
3837 | bs->stop = 0; | |
3838 | break; | |
18a18393 VP |
3839 | case WP_VALUE_CHANGED: |
3840 | if (b->type == bp_read_watchpoint) | |
3841 | { | |
85d721b8 PA |
3842 | /* There are two cases to consider here: |
3843 | ||
3844 | 1. we're watching the triggered memory for reads. | |
3845 | In that case, trust the target, and always report | |
3846 | the watchpoint hit to the user. Even though | |
3847 | reads don't cause value changes, the value may | |
3848 | have changed since the last time it was read, and | |
3849 | since we're not trapping writes, we will not see | |
3850 | those, and as such we should ignore our notion of | |
3851 | old value. | |
3852 | ||
3853 | 2. we're watching the triggered memory for both | |
3854 | reads and writes. There are two ways this may | |
3855 | happen: | |
3856 | ||
3857 | 2.1. this is a target that can't break on data | |
3858 | reads only, but can break on accesses (reads or | |
3859 | writes), such as e.g., x86. We detect this case | |
3860 | at the time we try to insert read watchpoints. | |
3861 | ||
3862 | 2.2. otherwise, the target supports read | |
3863 | watchpoints, but, the user set an access or write | |
3864 | watchpoint watching the same memory as this read | |
3865 | watchpoint. | |
3866 | ||
3867 | If we're watching memory writes as well as reads, | |
3868 | ignore watchpoint hits when we find that the | |
3869 | value hasn't changed, as reads don't cause | |
3870 | changes. This still gives false positives when | |
3871 | the program writes the same value to memory as | |
3872 | what there was already in memory (we will confuse | |
3873 | it for a read), but it's much better than | |
3874 | nothing. */ | |
3875 | ||
3876 | int other_write_watchpoint = 0; | |
3877 | ||
3878 | if (bl->watchpoint_type == hw_read) | |
3879 | { | |
3880 | struct breakpoint *other_b; | |
3881 | ||
3882 | ALL_BREAKPOINTS (other_b) | |
3883 | if ((other_b->type == bp_hardware_watchpoint | |
3884 | || other_b->type == bp_access_watchpoint) | |
3885 | && (other_b->watchpoint_triggered | |
3886 | == watch_triggered_yes)) | |
3887 | { | |
3888 | other_write_watchpoint = 1; | |
3889 | break; | |
3890 | } | |
3891 | } | |
3892 | ||
3893 | if (other_write_watchpoint | |
3894 | || bl->watchpoint_type == hw_access) | |
3895 | { | |
3896 | /* We're watching the same memory for writes, | |
3897 | and the value changed since the last time we | |
3898 | updated it, so this trap must be for a write. | |
3899 | Ignore it. */ | |
3900 | bs->print_it = print_it_noop; | |
3901 | bs->stop = 0; | |
3902 | } | |
18a18393 VP |
3903 | } |
3904 | break; | |
3905 | case WP_VALUE_NOT_CHANGED: | |
3906 | if (b->type == bp_hardware_watchpoint | |
3907 | || b->type == bp_watchpoint) | |
3908 | { | |
3909 | /* Don't stop: write watchpoints shouldn't fire if | |
3910 | the value hasn't changed. */ | |
3911 | bs->print_it = print_it_noop; | |
3912 | bs->stop = 0; | |
3913 | } | |
3914 | /* Stop. */ | |
3915 | break; | |
3916 | default: | |
3917 | /* Can't happen. */ | |
3918 | case 0: | |
3919 | /* Error from catch_errors. */ | |
3920 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3921 | if (b->related_breakpoint) | |
3922 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3923 | b->disposition = disp_del_at_next_stop; | |
3924 | /* We've already printed what needs to be printed. */ | |
3925 | bs->print_it = print_it_done; | |
3926 | break; | |
3927 | } | |
3928 | } | |
3929 | else /* must_check_value == 0 */ | |
3930 | { | |
3931 | /* This is a case where some watchpoint(s) triggered, but | |
3932 | not at the address of this watchpoint, or else no | |
3933 | watchpoint triggered after all. So don't print | |
3934 | anything for this watchpoint. */ | |
3935 | bs->print_it = print_it_noop; | |
3936 | bs->stop = 0; | |
3937 | } | |
3938 | } | |
3939 | } | |
3940 | ||
3941 | ||
3942 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3943 | of breakpoint referred to by BS. If we should not stop for this | |
3944 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 3945 | |
18a18393 VP |
3946 | static void |
3947 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3948 | { | |
3949 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3950 | const struct bp_location *bl; |
3951 | struct breakpoint *b; | |
3952 | ||
3953 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3954 | bl = bs->bp_location_at; |
2bdf28a0 | 3955 | gdb_assert (bl != NULL); |
f431efe5 | 3956 | b = bs->breakpoint_at; |
2bdf28a0 | 3957 | gdb_assert (b != NULL); |
18a18393 VP |
3958 | |
3959 | if (frame_id_p (b->frame_id) | |
edb3359d | 3960 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3961 | bs->stop = 0; |
3962 | else if (bs->stop) | |
3963 | { | |
3964 | int value_is_zero = 0; | |
60e1c644 PA |
3965 | struct expression *cond; |
3966 | ||
60e1c644 PA |
3967 | if (is_watchpoint (b)) |
3968 | cond = b->cond_exp; | |
3969 | else | |
3970 | cond = bl->cond; | |
3971 | ||
f431efe5 | 3972 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 3973 | { |
60e1c644 PA |
3974 | int within_current_scope = 1; |
3975 | ||
c5bc3a77 DJ |
3976 | /* We use value_mark and value_free_to_mark because it could |
3977 | be a long time before we return to the command level and | |
3978 | call free_all_values. We can't call free_all_values | |
3979 | because we might be in the middle of evaluating a | |
3980 | function call. */ | |
3981 | struct value *mark = value_mark (); | |
3982 | ||
edb3359d DJ |
3983 | /* Need to select the frame, with all that implies so that |
3984 | the conditions will have the right context. Because we | |
3985 | use the frame, we will not see an inlined function's | |
3986 | variables when we arrive at a breakpoint at the start | |
3987 | of the inlined function; the current frame will be the | |
3988 | call site. */ | |
60e1c644 PA |
3989 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
3990 | select_frame (get_current_frame ()); | |
3991 | else | |
3992 | { | |
3993 | struct frame_info *frame; | |
3994 | ||
3995 | /* For local watchpoint expressions, which particular | |
3996 | instance of a local is being watched matters, so we | |
3997 | keep track of the frame to evaluate the expression | |
3998 | in. To evaluate the condition however, it doesn't | |
3999 | really matter which instantiation of the function | |
4000 | where the condition makes sense triggers the | |
4001 | watchpoint. This allows an expression like "watch | |
4002 | global if q > 10" set in `func', catch writes to | |
4003 | global on all threads that call `func', or catch | |
4004 | writes on all recursive calls of `func' by a single | |
4005 | thread. We simply always evaluate the condition in | |
4006 | the innermost frame that's executing where it makes | |
4007 | sense to evaluate the condition. It seems | |
4008 | intuitive. */ | |
4009 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4010 | if (frame != NULL) | |
4011 | select_frame (frame); | |
4012 | else | |
4013 | within_current_scope = 0; | |
4014 | } | |
4015 | if (within_current_scope) | |
4016 | value_is_zero | |
4017 | = catch_errors (breakpoint_cond_eval, cond, | |
4018 | "Error in testing breakpoint condition:\n", | |
4019 | RETURN_MASK_ALL); | |
4020 | else | |
4021 | { | |
4022 | warning (_("Watchpoint condition cannot be tested " | |
4023 | "in the current scope")); | |
4024 | /* If we failed to set the right context for this | |
4025 | watchpoint, unconditionally report it. */ | |
4026 | value_is_zero = 0; | |
4027 | } | |
18a18393 | 4028 | /* FIXME-someday, should give breakpoint # */ |
c5bc3a77 | 4029 | value_free_to_mark (mark); |
18a18393 | 4030 | } |
60e1c644 PA |
4031 | |
4032 | if (cond && value_is_zero) | |
18a18393 VP |
4033 | { |
4034 | bs->stop = 0; | |
4035 | } | |
4036 | else if (b->thread != -1 && b->thread != thread_id) | |
4037 | { | |
4038 | bs->stop = 0; | |
4039 | } | |
4040 | else if (b->ignore_count > 0) | |
4041 | { | |
4042 | b->ignore_count--; | |
4043 | annotate_ignore_count_change (); | |
4044 | bs->stop = 0; | |
4045 | /* Increase the hit count even though we don't | |
4046 | stop. */ | |
4047 | ++(b->hit_count); | |
4048 | } | |
4049 | } | |
4050 | } | |
4051 | ||
4052 | ||
9709f61c | 4053 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4054 | BP_ADDR in thread PTID. |
c906108c | 4055 | |
d983da9c | 4056 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
4057 | don't understand this stop. Result is a chain of bpstat's such that: |
4058 | ||
c5aa993b | 4059 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4060 | |
c5aa993b | 4061 | if we understand why we stopped, the result is not null. |
c906108c | 4062 | |
c5aa993b JM |
4063 | Each element of the chain refers to a particular breakpoint or |
4064 | watchpoint at which we have stopped. (We may have stopped for | |
4065 | several reasons concurrently.) | |
c906108c | 4066 | |
c5aa993b JM |
4067 | Each element of the chain has valid next, breakpoint_at, |
4068 | commands, FIXME??? fields. */ | |
c906108c SS |
4069 | |
4070 | bpstat | |
6c95b8df PA |
4071 | bpstat_stop_status (struct address_space *aspace, |
4072 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4073 | { |
0d381245 | 4074 | struct breakpoint *b = NULL; |
afe38095 | 4075 | struct bp_location *bl; |
20874c92 | 4076 | struct bp_location *loc; |
5760d0ab JK |
4077 | /* First item of allocated bpstat's. */ |
4078 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4079 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4080 | bpstat bs; |
20874c92 | 4081 | int ix; |
429374b8 | 4082 | int need_remove_insert; |
f431efe5 | 4083 | int removed_any; |
c906108c | 4084 | |
f431efe5 PA |
4085 | /* First, build the bpstat chain with locations that explain a |
4086 | target stop, while being careful to not set the target running, | |
4087 | as that may invalidate locations (in particular watchpoint | |
4088 | locations are recreated). Resuming will happen here with | |
4089 | breakpoint conditions or watchpoint expressions that include | |
4090 | inferior function calls. */ | |
c5aa993b | 4091 | |
429374b8 JK |
4092 | ALL_BREAKPOINTS (b) |
4093 | { | |
4094 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4095 | continue; | |
a5606eee | 4096 | |
429374b8 JK |
4097 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4098 | { | |
4099 | /* For hardware watchpoints, we look only at the first location. | |
cc60f2e3 PA |
4100 | The watchpoint_check function will work on the entire expression, |
4101 | not the individual locations. For read watchpoints, the | |
4102 | watchpoints_triggered function has checked all locations | |
429374b8 JK |
4103 | already. */ |
4104 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
4105 | break; | |
18a18393 | 4106 | |
429374b8 JK |
4107 | if (bl->shlib_disabled) |
4108 | continue; | |
c5aa993b | 4109 | |
429374b8 JK |
4110 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4111 | continue; | |
c5aa993b | 4112 | |
429374b8 | 4113 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 4114 | |
5760d0ab | 4115 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to explain stop */ |
c5aa993b | 4116 | |
f431efe5 PA |
4117 | /* Assume we stop. Should we find a watchpoint that is not |
4118 | actually triggered, or if the condition of the breakpoint | |
4119 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4120 | bs->stop = 1; |
4121 | bs->print = 1; | |
d983da9c | 4122 | |
f431efe5 PA |
4123 | /* If this is a scope breakpoint, mark the associated |
4124 | watchpoint as triggered so that we will handle the | |
4125 | out-of-scope event. We'll get to the watchpoint next | |
4126 | iteration. */ | |
4127 | if (b->type == bp_watchpoint_scope) | |
4128 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
4129 | } | |
4130 | } | |
4131 | ||
4132 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4133 | { | |
4134 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, | |
4135 | aspace, bp_addr)) | |
4136 | { | |
5760d0ab | 4137 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4138 | /* For hits of moribund locations, we should just proceed. */ |
4139 | bs->stop = 0; | |
4140 | bs->print = 0; | |
4141 | bs->print_it = print_it_noop; | |
4142 | } | |
4143 | } | |
4144 | ||
f431efe5 PA |
4145 | /* Now go through the locations that caused the target to stop, and |
4146 | check whether we're interested in reporting this stop to higher | |
4147 | layers, or whether we should resume the target transparently. */ | |
4148 | ||
4149 | removed_any = 0; | |
4150 | ||
5760d0ab | 4151 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4152 | { |
4153 | if (!bs->stop) | |
4154 | continue; | |
4155 | ||
4156 | bpstat_check_watchpoint (bs); | |
4157 | if (!bs->stop) | |
4158 | continue; | |
4159 | ||
4160 | b = bs->breakpoint_at; | |
18a18393 | 4161 | |
429374b8 | 4162 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4163 | || b->type == bp_longjmp_master |
186c406b TT |
4164 | || b->type == bp_std_terminate_master |
4165 | || b->type == bp_exception_master) | |
429374b8 JK |
4166 | /* We do not stop for these. */ |
4167 | bs->stop = 0; | |
4168 | else | |
4169 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4170 | |
429374b8 JK |
4171 | if (bs->stop) |
4172 | { | |
4173 | ++(b->hit_count); | |
c906108c | 4174 | |
429374b8 JK |
4175 | /* We will stop here */ |
4176 | if (b->disposition == disp_disable) | |
4177 | { | |
4178 | if (b->enable_state != bp_permanent) | |
4179 | b->enable_state = bp_disabled; | |
f431efe5 | 4180 | removed_any = 1; |
429374b8 JK |
4181 | } |
4182 | if (b->silent) | |
4183 | bs->print = 0; | |
4184 | bs->commands = b->commands; | |
9add0f1b TT |
4185 | incref_counted_command_line (bs->commands); |
4186 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4187 | if (bs->commands_left | |
4188 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4189 | || (xdb_commands | |
4190 | && strcmp ("Q", | |
4191 | bs->commands_left->line) == 0))) | |
429374b8 | 4192 | { |
9add0f1b | 4193 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4194 | bs->print = 0; |
4195 | } | |
429374b8 JK |
4196 | } |
4197 | ||
4198 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4199 | if (bs->stop == 0 || bs->print == 0) | |
4200 | bs->print_it = print_it_noop; | |
429374b8 | 4201 | } |
876fa593 | 4202 | |
d983da9c DJ |
4203 | /* If we aren't stopping, the value of some hardware watchpoint may |
4204 | not have changed, but the intermediate memory locations we are | |
4205 | watching may have. Don't bother if we're stopping; this will get | |
4206 | done later. */ | |
d832cb68 | 4207 | need_remove_insert = 0; |
5760d0ab JK |
4208 | if (! bpstat_causes_stop (bs_head)) |
4209 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4210 | if (!bs->stop |
f431efe5 PA |
4211 | && bs->breakpoint_at |
4212 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4213 | { |
f431efe5 | 4214 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4215 | need_remove_insert = 1; |
d983da9c DJ |
4216 | } |
4217 | ||
d832cb68 | 4218 | if (need_remove_insert) |
2d134ed3 | 4219 | update_global_location_list (1); |
f431efe5 PA |
4220 | else if (removed_any) |
4221 | update_global_location_list (0); | |
d832cb68 | 4222 | |
5760d0ab | 4223 | return bs_head; |
c906108c | 4224 | } |
628fe4e4 JK |
4225 | |
4226 | static void | |
4227 | handle_jit_event (void) | |
4228 | { | |
4229 | struct frame_info *frame; | |
4230 | struct gdbarch *gdbarch; | |
4231 | ||
4232 | /* Switch terminal for any messages produced by | |
4233 | breakpoint_re_set. */ | |
4234 | target_terminal_ours_for_output (); | |
4235 | ||
4236 | frame = get_current_frame (); | |
4237 | gdbarch = get_frame_arch (frame); | |
4238 | ||
4239 | jit_event_handler (gdbarch); | |
4240 | ||
4241 | target_terminal_inferior (); | |
4242 | } | |
4243 | ||
4244 | /* Prepare WHAT final decision for infrun. */ | |
4245 | ||
4246 | /* Decide what infrun needs to do with this bpstat. */ | |
4247 | ||
c906108c | 4248 | struct bpstat_what |
fba45db2 | 4249 | bpstat_what (bpstat bs) |
c906108c | 4250 | { |
c906108c | 4251 | struct bpstat_what retval; |
628fe4e4 JK |
4252 | /* We need to defer calling `solib_add', as adding new symbols |
4253 | resets breakpoints, which in turn deletes breakpoint locations, | |
4254 | and hence may clear unprocessed entries in the BS chain. */ | |
4255 | int shlib_event = 0; | |
4256 | int jit_event = 0; | |
c906108c | 4257 | |
628fe4e4 | 4258 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4259 | retval.call_dummy = STOP_NONE; |
186c406b | 4260 | retval.is_longjmp = 0; |
628fe4e4 | 4261 | |
c906108c SS |
4262 | for (; bs != NULL; bs = bs->next) |
4263 | { | |
628fe4e4 JK |
4264 | /* Extract this BS's action. After processing each BS, we check |
4265 | if its action overrides all we've seem so far. */ | |
4266 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4267 | enum bptype bptype; | |
4268 | ||
c906108c | 4269 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4270 | { |
4271 | /* I suspect this can happen if it was a momentary | |
4272 | breakpoint which has since been deleted. */ | |
4273 | bptype = bp_none; | |
4274 | } | |
f431efe5 | 4275 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4276 | bptype = bp_none; |
20874c92 | 4277 | else |
f431efe5 | 4278 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4279 | |
4280 | switch (bptype) | |
c906108c SS |
4281 | { |
4282 | case bp_none: | |
628fe4e4 | 4283 | break; |
c906108c SS |
4284 | case bp_breakpoint: |
4285 | case bp_hardware_breakpoint: | |
4286 | case bp_until: | |
4287 | case bp_finish: | |
4288 | if (bs->stop) | |
4289 | { | |
4290 | if (bs->print) | |
628fe4e4 | 4291 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4292 | else |
628fe4e4 | 4293 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4294 | } |
4295 | else | |
628fe4e4 | 4296 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4297 | break; |
4298 | case bp_watchpoint: | |
4299 | case bp_hardware_watchpoint: | |
4300 | case bp_read_watchpoint: | |
4301 | case bp_access_watchpoint: | |
4302 | if (bs->stop) | |
4303 | { | |
4304 | if (bs->print) | |
628fe4e4 | 4305 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4306 | else |
628fe4e4 | 4307 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4308 | } |
4309 | else | |
628fe4e4 JK |
4310 | { |
4311 | /* There was a watchpoint, but we're not stopping. | |
4312 | This requires no further action. */ | |
4313 | } | |
c906108c SS |
4314 | break; |
4315 | case bp_longjmp: | |
186c406b | 4316 | case bp_exception: |
628fe4e4 | 4317 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4318 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4319 | break; |
4320 | case bp_longjmp_resume: | |
186c406b | 4321 | case bp_exception_resume: |
628fe4e4 | 4322 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4323 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4324 | break; |
4325 | case bp_step_resume: | |
4326 | if (bs->stop) | |
628fe4e4 JK |
4327 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4328 | else | |
c906108c | 4329 | { |
628fe4e4 JK |
4330 | /* It is for the wrong frame. */ |
4331 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4332 | } |
c906108c | 4333 | break; |
c906108c | 4334 | case bp_watchpoint_scope: |
c4093a6a | 4335 | case bp_thread_event: |
1900040c | 4336 | case bp_overlay_event: |
0fd8e87f | 4337 | case bp_longjmp_master: |
aa7d318d | 4338 | case bp_std_terminate_master: |
186c406b | 4339 | case bp_exception_master: |
628fe4e4 | 4340 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4341 | break; |
ce78b96d | 4342 | case bp_catchpoint: |
c5aa993b JM |
4343 | if (bs->stop) |
4344 | { | |
4345 | if (bs->print) | |
628fe4e4 | 4346 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4347 | else |
628fe4e4 | 4348 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4349 | } |
4350 | else | |
628fe4e4 JK |
4351 | { |
4352 | /* There was a catchpoint, but we're not stopping. | |
4353 | This requires no further action. */ | |
4354 | } | |
4355 | break; | |
4356 | case bp_shlib_event: | |
4357 | shlib_event = 1; | |
4358 | ||
4359 | /* If requested, stop when the dynamic linker notifies GDB | |
4360 | of events. This allows the user to get control and place | |
4361 | breakpoints in initializer routines for dynamically | |
4362 | loaded objects (among other things). */ | |
4363 | if (stop_on_solib_events) | |
4364 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4365 | else | |
4366 | this_action = BPSTAT_WHAT_SINGLE; | |
4367 | break; | |
4368 | case bp_jit_event: | |
4369 | jit_event = 1; | |
4370 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4371 | break; |
c906108c | 4372 | case bp_call_dummy: |
53a5351d JM |
4373 | /* Make sure the action is stop (silent or noisy), |
4374 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4375 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4376 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4377 | break; |
4378 | case bp_std_terminate: | |
4379 | /* Make sure the action is stop (silent or noisy), | |
4380 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4381 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4382 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4383 | break; |
1042e4c0 | 4384 | case bp_tracepoint: |
7a697b8d | 4385 | case bp_fast_tracepoint: |
0fb4aa4b | 4386 | case bp_static_tracepoint: |
1042e4c0 SS |
4387 | /* Tracepoint hits should not be reported back to GDB, and |
4388 | if one got through somehow, it should have been filtered | |
4389 | out already. */ | |
4390 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4391 | _("bpstat_what: tracepoint encountered")); |
628fe4e4 JK |
4392 | default: |
4393 | internal_error (__FILE__, __LINE__, | |
4394 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4395 | } |
628fe4e4 JK |
4396 | |
4397 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4398 | } |
628fe4e4 JK |
4399 | |
4400 | if (shlib_event) | |
4401 | { | |
4402 | if (debug_infrun) | |
4403 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4404 | ||
4405 | /* Check for any newly added shared libraries if we're supposed | |
4406 | to be adding them automatically. */ | |
4407 | ||
4408 | /* Switch terminal for any messages produced by | |
4409 | breakpoint_re_set. */ | |
4410 | target_terminal_ours_for_output (); | |
4411 | ||
4412 | #ifdef SOLIB_ADD | |
4413 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4414 | #else | |
4415 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4416 | #endif | |
4417 | ||
4418 | target_terminal_inferior (); | |
4419 | } | |
4420 | ||
4421 | if (jit_event) | |
4422 | { | |
4423 | if (debug_infrun) | |
4424 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4425 | ||
4426 | handle_jit_event (); | |
4427 | } | |
4428 | ||
c906108c SS |
4429 | return retval; |
4430 | } | |
4431 | ||
4432 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4433 | without hardware support). This isn't related to a specific bpstat, | |
4434 | just to things like whether watchpoints are set. */ | |
4435 | ||
c5aa993b | 4436 | int |
fba45db2 | 4437 | bpstat_should_step (void) |
c906108c SS |
4438 | { |
4439 | struct breakpoint *b; | |
cc59ec59 | 4440 | |
c906108c | 4441 | ALL_BREAKPOINTS (b) |
717a8278 | 4442 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4443 | return 1; |
c906108c SS |
4444 | return 0; |
4445 | } | |
4446 | ||
67822962 PA |
4447 | int |
4448 | bpstat_causes_stop (bpstat bs) | |
4449 | { | |
4450 | for (; bs != NULL; bs = bs->next) | |
4451 | if (bs->stop) | |
4452 | return 1; | |
4453 | ||
4454 | return 0; | |
4455 | } | |
4456 | ||
c906108c | 4457 | \f |
c5aa993b | 4458 | |
859825b8 JK |
4459 | /* Print the LOC location out of the list of B->LOC locations. */ |
4460 | ||
0d381245 VP |
4461 | static void print_breakpoint_location (struct breakpoint *b, |
4462 | struct bp_location *loc, | |
4463 | char *wrap_indent, | |
4464 | struct ui_stream *stb) | |
4465 | { | |
6c95b8df PA |
4466 | struct cleanup *old_chain = save_current_program_space (); |
4467 | ||
859825b8 JK |
4468 | if (loc != NULL && loc->shlib_disabled) |
4469 | loc = NULL; | |
4470 | ||
6c95b8df PA |
4471 | if (loc != NULL) |
4472 | set_current_program_space (loc->pspace); | |
4473 | ||
859825b8 | 4474 | if (b->source_file && loc) |
0d381245 VP |
4475 | { |
4476 | struct symbol *sym | |
4477 | = find_pc_sect_function (loc->address, loc->section); | |
4478 | if (sym) | |
4479 | { | |
4480 | ui_out_text (uiout, "in "); | |
4481 | ui_out_field_string (uiout, "func", | |
4482 | SYMBOL_PRINT_NAME (sym)); | |
4483 | ui_out_wrap_hint (uiout, wrap_indent); | |
4484 | ui_out_text (uiout, " at "); | |
4485 | } | |
4486 | ui_out_field_string (uiout, "file", b->source_file); | |
4487 | ui_out_text (uiout, ":"); | |
4488 | ||
4489 | if (ui_out_is_mi_like_p (uiout)) | |
4490 | { | |
4491 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4492 | char *fullname = symtab_to_fullname (sal.symtab); | |
4493 | ||
4494 | if (fullname) | |
4495 | ui_out_field_string (uiout, "fullname", fullname); | |
4496 | } | |
4497 | ||
4498 | ui_out_field_int (uiout, "line", b->line_number); | |
4499 | } | |
859825b8 | 4500 | else if (loc) |
0d381245 | 4501 | { |
22e722e1 DJ |
4502 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4503 | demangle, ""); | |
0d381245 VP |
4504 | ui_out_field_stream (uiout, "at", stb); |
4505 | } | |
859825b8 JK |
4506 | else |
4507 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4508 | |
4509 | do_cleanups (old_chain); | |
0d381245 VP |
4510 | } |
4511 | ||
269b11a2 PA |
4512 | static const char * |
4513 | bptype_string (enum bptype type) | |
c906108c | 4514 | { |
c4093a6a JM |
4515 | struct ep_type_description |
4516 | { | |
4517 | enum bptype type; | |
4518 | char *description; | |
4519 | }; | |
4520 | static struct ep_type_description bptypes[] = | |
c906108c | 4521 | { |
c5aa993b JM |
4522 | {bp_none, "?deleted?"}, |
4523 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4524 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4525 | {bp_until, "until"}, |
4526 | {bp_finish, "finish"}, | |
4527 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4528 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4529 | {bp_read_watchpoint, "read watchpoint"}, |
4530 | {bp_access_watchpoint, "acc watchpoint"}, | |
4531 | {bp_longjmp, "longjmp"}, | |
4532 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4533 | {bp_exception, "exception"}, |
4534 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4535 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4536 | {bp_watchpoint_scope, "watchpoint scope"}, |
4537 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4538 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4539 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4540 | {bp_thread_event, "thread events"}, |
1900040c | 4541 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4542 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4543 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4544 | {bp_exception_master, "exception master"}, |
ce78b96d | 4545 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4546 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4547 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4548 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4549 | {bp_jit_event, "jit events"}, |
c5aa993b | 4550 | }; |
269b11a2 PA |
4551 | |
4552 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4553 | || ((int) type != bptypes[(int) type].type)) | |
4554 | internal_error (__FILE__, __LINE__, | |
4555 | _("bptypes table does not describe type #%d."), | |
4556 | (int) type); | |
4557 | ||
4558 | return bptypes[(int) type].description; | |
4559 | } | |
4560 | ||
4561 | /* Print B to gdb_stdout. */ | |
4562 | ||
4563 | static void | |
4564 | print_one_breakpoint_location (struct breakpoint *b, | |
4565 | struct bp_location *loc, | |
4566 | int loc_number, | |
4567 | struct bp_location **last_loc, | |
4568 | int print_address_bits, | |
4569 | int allflag) | |
4570 | { | |
4571 | struct command_line *l; | |
c2c6d25f | 4572 | static char bpenables[] = "nynny"; |
c906108c | 4573 | char wrap_indent[80]; |
8b93c638 JM |
4574 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4575 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4576 | struct cleanup *bkpt_chain; |
c906108c | 4577 | |
0d381245 VP |
4578 | int header_of_multiple = 0; |
4579 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4580 | struct value_print_options opts; |
4581 | ||
4582 | get_user_print_options (&opts); | |
0d381245 VP |
4583 | |
4584 | gdb_assert (!loc || loc_number != 0); | |
4585 | /* See comment in print_one_breakpoint concerning | |
4586 | treatment of breakpoints with single disabled | |
4587 | location. */ | |
4588 | if (loc == NULL | |
4589 | && (b->loc != NULL | |
4590 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4591 | header_of_multiple = 1; | |
4592 | if (loc == NULL) | |
4593 | loc = b->loc; | |
4594 | ||
c4093a6a | 4595 | annotate_record (); |
3b31d625 | 4596 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4597 | |
4598 | /* 1 */ | |
4599 | annotate_field (0); | |
0d381245 VP |
4600 | if (part_of_multiple) |
4601 | { | |
4602 | char *formatted; | |
0c6773c1 | 4603 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4604 | ui_out_field_string (uiout, "number", formatted); |
4605 | xfree (formatted); | |
4606 | } | |
4607 | else | |
4608 | { | |
4609 | ui_out_field_int (uiout, "number", b->number); | |
4610 | } | |
c4093a6a JM |
4611 | |
4612 | /* 2 */ | |
4613 | annotate_field (1); | |
0d381245 VP |
4614 | if (part_of_multiple) |
4615 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4616 | else |
4617 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4618 | |
4619 | /* 3 */ | |
4620 | annotate_field (2); | |
0d381245 VP |
4621 | if (part_of_multiple) |
4622 | ui_out_field_skip (uiout, "disp"); | |
4623 | else | |
2cec12e5 | 4624 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4625 | |
c4093a6a JM |
4626 | |
4627 | /* 4 */ | |
4628 | annotate_field (3); | |
0d381245 | 4629 | if (part_of_multiple) |
54e52265 | 4630 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4631 | else |
54e52265 VP |
4632 | ui_out_field_fmt (uiout, "enabled", "%c", |
4633 | bpenables[(int) b->enable_state]); | |
4634 | ui_out_spaces (uiout, 2); | |
0d381245 | 4635 | |
c4093a6a JM |
4636 | |
4637 | /* 5 and 6 */ | |
4638 | strcpy (wrap_indent, " "); | |
79a45b7d | 4639 | if (opts.addressprint) |
75ac9d7b | 4640 | { |
a6d9a66e | 4641 | if (print_address_bits <= 32) |
75ac9d7b MS |
4642 | strcat (wrap_indent, " "); |
4643 | else | |
4644 | strcat (wrap_indent, " "); | |
4645 | } | |
c906108c | 4646 | |
3086aeae | 4647 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4648 | { |
4649 | /* Although the print_one can possibly print | |
4650 | all locations, calling it here is not likely | |
4651 | to get any nice result. So, make sure there's | |
4652 | just one location. */ | |
4653 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4654 | b->ops->print_one (b, last_loc); |
0d381245 | 4655 | } |
3086aeae DJ |
4656 | else |
4657 | switch (b->type) | |
4658 | { | |
4659 | case bp_none: | |
4660 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4661 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4662 | break; |
c906108c | 4663 | |
3086aeae DJ |
4664 | case bp_watchpoint: |
4665 | case bp_hardware_watchpoint: | |
4666 | case bp_read_watchpoint: | |
4667 | case bp_access_watchpoint: | |
4668 | /* Field 4, the address, is omitted (which makes the columns | |
4669 | not line up too nicely with the headers, but the effect | |
4670 | is relatively readable). */ | |
79a45b7d | 4671 | if (opts.addressprint) |
3086aeae DJ |
4672 | ui_out_field_skip (uiout, "addr"); |
4673 | annotate_field (5); | |
fa8a61dc | 4674 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4675 | break; |
4676 | ||
3086aeae DJ |
4677 | case bp_breakpoint: |
4678 | case bp_hardware_breakpoint: | |
4679 | case bp_until: | |
4680 | case bp_finish: | |
4681 | case bp_longjmp: | |
4682 | case bp_longjmp_resume: | |
186c406b TT |
4683 | case bp_exception: |
4684 | case bp_exception_resume: | |
3086aeae | 4685 | case bp_step_resume: |
3086aeae DJ |
4686 | case bp_watchpoint_scope: |
4687 | case bp_call_dummy: | |
aa7d318d | 4688 | case bp_std_terminate: |
3086aeae DJ |
4689 | case bp_shlib_event: |
4690 | case bp_thread_event: | |
4691 | case bp_overlay_event: | |
0fd8e87f | 4692 | case bp_longjmp_master: |
aa7d318d | 4693 | case bp_std_terminate_master: |
186c406b | 4694 | case bp_exception_master: |
1042e4c0 | 4695 | case bp_tracepoint: |
7a697b8d | 4696 | case bp_fast_tracepoint: |
0fb4aa4b | 4697 | case bp_static_tracepoint: |
4efc6507 | 4698 | case bp_jit_event: |
79a45b7d | 4699 | if (opts.addressprint) |
3086aeae DJ |
4700 | { |
4701 | annotate_field (4); | |
54e52265 | 4702 | if (header_of_multiple) |
0d381245 | 4703 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4704 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4705 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4706 | else |
5af949e3 UW |
4707 | ui_out_field_core_addr (uiout, "addr", |
4708 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4709 | } |
4710 | annotate_field (5); | |
0d381245 VP |
4711 | if (!header_of_multiple) |
4712 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4713 | if (b->loc) | |
a6d9a66e | 4714 | *last_loc = b->loc; |
3086aeae DJ |
4715 | break; |
4716 | } | |
c906108c | 4717 | |
6c95b8df PA |
4718 | |
4719 | /* For backward compatibility, don't display inferiors unless there | |
4720 | are several. */ | |
4721 | if (loc != NULL | |
4722 | && !header_of_multiple | |
4723 | && (allflag | |
4724 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4725 | && (number_of_program_spaces () > 1 | |
4726 | || number_of_inferiors () > 1) | |
2bdf28a0 JK |
4727 | /* LOC is for existing B, it cannot be in moribund_locations and |
4728 | thus having NULL OWNER. */ | |
6c95b8df PA |
4729 | && loc->owner->type != bp_catchpoint))) |
4730 | { | |
4731 | struct inferior *inf; | |
4732 | int first = 1; | |
4733 | ||
4734 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4735 | { | |
4736 | if (inf->pspace == loc->pspace) | |
4737 | { | |
4738 | if (first) | |
4739 | { | |
4740 | first = 0; | |
4741 | ui_out_text (uiout, " inf "); | |
4742 | } | |
4743 | else | |
4744 | ui_out_text (uiout, ", "); | |
4745 | ui_out_text (uiout, plongest (inf->num)); | |
4746 | } | |
4747 | } | |
4748 | } | |
4749 | ||
4a306c9a | 4750 | if (!part_of_multiple) |
c4093a6a | 4751 | { |
4a306c9a JB |
4752 | if (b->thread != -1) |
4753 | { | |
4754 | /* FIXME: This seems to be redundant and lost here; see the | |
4755 | "stop only in" line a little further down. */ | |
4756 | ui_out_text (uiout, " thread "); | |
4757 | ui_out_field_int (uiout, "thread", b->thread); | |
4758 | } | |
4759 | else if (b->task != 0) | |
4760 | { | |
4761 | ui_out_text (uiout, " task "); | |
4762 | ui_out_field_int (uiout, "task", b->task); | |
4763 | } | |
c4093a6a JM |
4764 | } |
4765 | ||
8b93c638 | 4766 | ui_out_text (uiout, "\n"); |
c4093a6a | 4767 | |
0fb4aa4b PA |
4768 | if (!part_of_multiple && b->static_trace_marker_id) |
4769 | { | |
4770 | gdb_assert (b->type == bp_static_tracepoint); | |
4771 | ||
4772 | ui_out_text (uiout, "\tmarker id is "); | |
4773 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4774 | b->static_trace_marker_id); | |
4775 | ui_out_text (uiout, "\n"); | |
4776 | } | |
4777 | ||
0d381245 | 4778 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4779 | { |
4780 | annotate_field (6); | |
8b93c638 | 4781 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4782 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4783 | the frame ID. */ | |
5af949e3 UW |
4784 | ui_out_field_core_addr (uiout, "frame", |
4785 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4786 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4787 | } |
4788 | ||
0d381245 | 4789 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4790 | { |
f7f9143b JB |
4791 | /* We do not print the condition for Ada exception catchpoints |
4792 | because the condition is an internal implementation detail | |
4793 | that we do not want to expose to the user. */ | |
c4093a6a | 4794 | annotate_field (7); |
d77f58be | 4795 | if (is_tracepoint (b)) |
1042e4c0 SS |
4796 | ui_out_text (uiout, "\ttrace only if "); |
4797 | else | |
4798 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4799 | ui_out_field_string (uiout, "cond", b->cond_string); |
4800 | ui_out_text (uiout, "\n"); | |
4801 | } | |
4802 | ||
0d381245 | 4803 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4804 | { |
4805 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4806 | ui_out_text (uiout, "\tstop only in thread "); |
4807 | ui_out_field_int (uiout, "thread", b->thread); | |
4808 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4809 | } |
4810 | ||
63c715c6 | 4811 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4812 | { |
4813 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4814 | if (ep_is_catchpoint (b)) |
4815 | ui_out_text (uiout, "\tcatchpoint"); | |
4816 | else | |
4817 | ui_out_text (uiout, "\tbreakpoint"); | |
4818 | ui_out_text (uiout, " already hit "); | |
4819 | ui_out_field_int (uiout, "times", b->hit_count); | |
4820 | if (b->hit_count == 1) | |
4821 | ui_out_text (uiout, " time\n"); | |
4822 | else | |
4823 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4824 | } |
4825 | ||
fb40c209 AC |
4826 | /* Output the count also if it is zero, but only if this is |
4827 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4828 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4829 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4830 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4831 | |
0d381245 | 4832 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4833 | { |
4834 | annotate_field (8); | |
8b93c638 JM |
4835 | ui_out_text (uiout, "\tignore next "); |
4836 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4837 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4838 | } |
059fb39f | 4839 | |
9add0f1b | 4840 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4841 | if (!part_of_multiple && l) |
c4093a6a | 4842 | { |
3b31d625 EZ |
4843 | struct cleanup *script_chain; |
4844 | ||
c4093a6a | 4845 | annotate_field (9); |
3b31d625 | 4846 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4847 | print_command_lines (uiout, l, 4); |
3b31d625 | 4848 | do_cleanups (script_chain); |
c4093a6a | 4849 | } |
d24317b4 | 4850 | |
1042e4c0 SS |
4851 | if (!part_of_multiple && b->pass_count) |
4852 | { | |
4853 | annotate_field (10); | |
4854 | ui_out_text (uiout, "\tpass count "); | |
4855 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4856 | ui_out_text (uiout, " \n"); | |
4857 | } | |
4858 | ||
d24317b4 VP |
4859 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4860 | { | |
4861 | if (b->addr_string) | |
4862 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4863 | else if (b->exp_string) | |
4864 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4865 | } | |
4866 | ||
3b31d625 | 4867 | do_cleanups (bkpt_chain); |
8b93c638 | 4868 | do_cleanups (old_chain); |
c4093a6a | 4869 | } |
c5aa993b | 4870 | |
0d381245 VP |
4871 | static void |
4872 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4873 | struct bp_location **last_loc, int print_address_bits, |
4874 | int allflag) | |
0d381245 | 4875 | { |
6c95b8df PA |
4876 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4877 | print_address_bits, allflag); | |
0d381245 VP |
4878 | |
4879 | /* If this breakpoint has custom print function, | |
4880 | it's already printed. Otherwise, print individual | |
4881 | locations, if any. */ | |
4882 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4883 | { | |
4884 | /* If breakpoint has a single location that is | |
4885 | disabled, we print it as if it had | |
4886 | several locations, since otherwise it's hard to | |
4887 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4888 | situation. |
4889 | Note that while hardware watchpoints have | |
4890 | several locations internally, that's no a property | |
4891 | exposed to user. */ | |
0d381245 | 4892 | if (b->loc |
a5606eee | 4893 | && !is_hardware_watchpoint (b) |
0d381245 | 4894 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4895 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4896 | { |
4897 | struct bp_location *loc; | |
4898 | int n = 1; | |
4899 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4900 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4901 | print_address_bits, allflag); |
0d381245 VP |
4902 | } |
4903 | } | |
4904 | } | |
4905 | ||
a6d9a66e UW |
4906 | static int |
4907 | breakpoint_address_bits (struct breakpoint *b) | |
4908 | { | |
4909 | int print_address_bits = 0; | |
4910 | struct bp_location *loc; | |
4911 | ||
4912 | for (loc = b->loc; loc; loc = loc->next) | |
4913 | { | |
c7437ca6 PA |
4914 | int addr_bit; |
4915 | ||
4916 | /* Software watchpoints that aren't watching memory don't have | |
4917 | an address to print. */ | |
4918 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4919 | continue; | |
4920 | ||
4921 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4922 | if (addr_bit > print_address_bits) |
4923 | print_address_bits = addr_bit; | |
4924 | } | |
4925 | ||
4926 | return print_address_bits; | |
4927 | } | |
0d381245 | 4928 | |
c4093a6a JM |
4929 | struct captured_breakpoint_query_args |
4930 | { | |
4931 | int bnum; | |
4932 | }; | |
c5aa993b | 4933 | |
c4093a6a | 4934 | static int |
2b65245e | 4935 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4936 | { |
4937 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4938 | struct breakpoint *b; |
a6d9a66e | 4939 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4940 | |
c4093a6a JM |
4941 | ALL_BREAKPOINTS (b) |
4942 | { | |
4943 | if (args->bnum == b->number) | |
c5aa993b | 4944 | { |
a6d9a66e | 4945 | int print_address_bits = breakpoint_address_bits (b); |
cc59ec59 | 4946 | |
6c95b8df | 4947 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4948 | return GDB_RC_OK; |
c5aa993b | 4949 | } |
c4093a6a JM |
4950 | } |
4951 | return GDB_RC_NONE; | |
4952 | } | |
c5aa993b | 4953 | |
c4093a6a | 4954 | enum gdb_rc |
ce43223b | 4955 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4956 | { |
4957 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 4958 | |
c4093a6a JM |
4959 | args.bnum = bnum; |
4960 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4961 | an error. */ | |
b0b13bb4 DJ |
4962 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4963 | error_message, RETURN_MASK_ALL) < 0) | |
4964 | return GDB_RC_FAIL; | |
4965 | else | |
4966 | return GDB_RC_OK; | |
c4093a6a | 4967 | } |
c5aa993b | 4968 | |
7f3b0473 AC |
4969 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4970 | catchpoints, et.al.). */ | |
4971 | ||
4972 | static int | |
4973 | user_settable_breakpoint (const struct breakpoint *b) | |
4974 | { | |
4975 | return (b->type == bp_breakpoint | |
ce78b96d | 4976 | || b->type == bp_catchpoint |
7f3b0473 | 4977 | || b->type == bp_hardware_breakpoint |
d77f58be | 4978 | || is_tracepoint (b) |
cc60f2e3 | 4979 | || is_watchpoint (b)); |
7f3b0473 AC |
4980 | } |
4981 | ||
4982 | /* Print information on user settable breakpoint (watchpoint, etc) | |
d77f58be SS |
4983 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
4984 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
4985 | FILTER is non-NULL, call it on each breakpoint and only include the | |
4986 | ones for which it returns non-zero. Return the total number of | |
4987 | breakpoints listed. */ | |
c906108c | 4988 | |
d77f58be SS |
4989 | static int |
4990 | breakpoint_1 (int bnum, int allflag, int (*filter) (const struct breakpoint *)) | |
c4093a6a | 4991 | { |
52f0bd74 | 4992 | struct breakpoint *b; |
a6d9a66e | 4993 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4994 | int nr_printable_breakpoints; |
3b31d625 | 4995 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4996 | struct value_print_options opts; |
a6d9a66e | 4997 | int print_address_bits = 0; |
269b11a2 PA |
4998 | int print_type_col_width = 14; |
4999 | ||
79a45b7d TT |
5000 | get_user_print_options (&opts); |
5001 | ||
a6d9a66e UW |
5002 | /* Compute the number of rows in the table, as well as the |
5003 | size required for address fields. */ | |
7f3b0473 AC |
5004 | nr_printable_breakpoints = 0; |
5005 | ALL_BREAKPOINTS (b) | |
5006 | if (bnum == -1 | |
5007 | || bnum == b->number) | |
5008 | { | |
d77f58be SS |
5009 | /* If we have a filter, only list the breakpoints it accepts. */ |
5010 | if (filter && !filter (b)) | |
5011 | continue; | |
5012 | ||
84f4c1fe PM |
5013 | if (allflag || (user_settable_breakpoint (b) |
5014 | && b->number > 0)) | |
a6d9a66e | 5015 | { |
269b11a2 PA |
5016 | int addr_bit, type_len; |
5017 | ||
5018 | addr_bit = breakpoint_address_bits (b); | |
a6d9a66e UW |
5019 | if (addr_bit > print_address_bits) |
5020 | print_address_bits = addr_bit; | |
5021 | ||
269b11a2 PA |
5022 | type_len = strlen (bptype_string (b->type)); |
5023 | if (type_len > print_type_col_width) | |
5024 | print_type_col_width = type_len; | |
5025 | ||
a6d9a66e UW |
5026 | nr_printable_breakpoints++; |
5027 | } | |
7f3b0473 AC |
5028 | } |
5029 | ||
79a45b7d | 5030 | if (opts.addressprint) |
3b31d625 EZ |
5031 | bkpttbl_chain |
5032 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
5033 | "BreakpointTable"); | |
8b93c638 | 5034 | else |
3b31d625 EZ |
5035 | bkpttbl_chain |
5036 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
5037 | "BreakpointTable"); | |
8b93c638 | 5038 | |
7f3b0473 | 5039 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5040 | annotate_breakpoints_headers (); |
5041 | if (nr_printable_breakpoints > 0) | |
5042 | annotate_field (0); | |
0d381245 | 5043 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5044 | if (nr_printable_breakpoints > 0) |
5045 | annotate_field (1); | |
269b11a2 PA |
5046 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
5047 | "type", "Type"); /* 2 */ | |
d7faa9e7 AC |
5048 | if (nr_printable_breakpoints > 0) |
5049 | annotate_field (2); | |
5050 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
5051 | if (nr_printable_breakpoints > 0) | |
5052 | annotate_field (3); | |
54e52265 | 5053 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5054 | if (opts.addressprint) |
7f3b0473 | 5055 | { |
d7faa9e7 AC |
5056 | if (nr_printable_breakpoints > 0) |
5057 | annotate_field (4); | |
a6d9a66e | 5058 | if (print_address_bits <= 32) |
b25959ec | 5059 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5060 | else |
b25959ec | 5061 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5062 | } |
d7faa9e7 AC |
5063 | if (nr_printable_breakpoints > 0) |
5064 | annotate_field (5); | |
5065 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5066 | ui_out_table_body (uiout); | |
5067 | if (nr_printable_breakpoints > 0) | |
5068 | annotate_breakpoints_table (); | |
7f3b0473 | 5069 | |
c4093a6a | 5070 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5071 | { |
5072 | QUIT; | |
c4093a6a JM |
5073 | if (bnum == -1 |
5074 | || bnum == b->number) | |
5075 | { | |
d77f58be SS |
5076 | /* If we have a filter, only list the breakpoints it accepts. */ |
5077 | if (filter && !filter (b)) | |
5078 | continue; | |
5079 | ||
c4093a6a JM |
5080 | /* We only print out user settable breakpoints unless the |
5081 | allflag is set. */ | |
84f4c1fe PM |
5082 | if (allflag || (user_settable_breakpoint (b) |
5083 | && b->number > 0)) | |
6c95b8df | 5084 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5085 | } |
bad56014 | 5086 | } |
c4093a6a | 5087 | |
3b31d625 | 5088 | do_cleanups (bkpttbl_chain); |
698384cd | 5089 | |
7f3b0473 | 5090 | if (nr_printable_breakpoints == 0) |
c906108c | 5091 | { |
d77f58be SS |
5092 | /* If there's a filter, let the caller decide how to report empty list. */ |
5093 | if (!filter) | |
5094 | { | |
5095 | if (bnum == -1) | |
5096 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5097 | else | |
5098 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
5099 | bnum); | |
5100 | } | |
c906108c SS |
5101 | } |
5102 | else | |
c4093a6a | 5103 | { |
a6d9a66e UW |
5104 | if (last_loc && !server_command) |
5105 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5106 | } |
c906108c | 5107 | |
c4093a6a JM |
5108 | /* FIXME? Should this be moved up so that it is only called when |
5109 | there have been breakpoints? */ | |
c906108c | 5110 | annotate_breakpoints_table_end (); |
d77f58be SS |
5111 | |
5112 | return nr_printable_breakpoints; | |
c906108c SS |
5113 | } |
5114 | ||
ad443146 SS |
5115 | /* Display the value of default-collect in a way that is generally |
5116 | compatible with the breakpoint list. */ | |
5117 | ||
5118 | static void | |
5119 | default_collect_info (void) | |
5120 | { | |
5121 | /* If it has no value (which is frequently the case), say nothing; a | |
5122 | message like "No default-collect." gets in user's face when it's | |
5123 | not wanted. */ | |
5124 | if (!*default_collect) | |
5125 | return; | |
5126 | ||
5127 | /* The following phrase lines up nicely with per-tracepoint collect | |
5128 | actions. */ | |
5129 | ui_out_text (uiout, "default collect "); | |
5130 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5131 | ui_out_text (uiout, " \n"); | |
5132 | } | |
5133 | ||
c906108c | 5134 | static void |
fba45db2 | 5135 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5136 | { |
5137 | int bnum = -1; | |
5138 | ||
5139 | if (bnum_exp) | |
bb518678 | 5140 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5141 | |
d77f58be | 5142 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5143 | |
5144 | default_collect_info (); | |
d77f58be SS |
5145 | } |
5146 | ||
5147 | static void | |
5148 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5149 | { | |
5150 | int wpnum = -1, num_printed; | |
5151 | ||
5152 | if (wpnum_exp) | |
5153 | wpnum = parse_and_eval_long (wpnum_exp); | |
5154 | ||
5155 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5156 | ||
5157 | if (num_printed == 0) | |
5158 | { | |
5159 | if (wpnum == -1) | |
5160 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5161 | else | |
5162 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5163 | } | |
c906108c SS |
5164 | } |
5165 | ||
7a292a7a | 5166 | static void |
fba45db2 | 5167 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5168 | { |
5169 | int bnum = -1; | |
5170 | ||
5171 | if (bnum_exp) | |
bb518678 | 5172 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5173 | |
d77f58be | 5174 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5175 | |
5176 | default_collect_info (); | |
c906108c SS |
5177 | } |
5178 | ||
0d381245 | 5179 | static int |
714835d5 | 5180 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5181 | struct program_space *pspace, |
714835d5 | 5182 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5183 | { |
5184 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5185 | |
0d381245 VP |
5186 | for (; bl; bl = bl->next) |
5187 | { | |
6c95b8df PA |
5188 | if (bl->pspace == pspace |
5189 | && bl->address == pc | |
0d381245 VP |
5190 | && (!overlay_debugging || bl->section == section)) |
5191 | return 1; | |
5192 | } | |
5193 | return 0; | |
5194 | } | |
5195 | ||
6c95b8df PA |
5196 | /* Print a message describing any breakpoints set at PC. This |
5197 | concerns with logical breakpoints, so we match program spaces, not | |
5198 | address spaces. */ | |
c906108c SS |
5199 | |
5200 | static void | |
6c95b8df PA |
5201 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5202 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5203 | struct obj_section *section, int thread) |
c906108c | 5204 | { |
52f0bd74 AC |
5205 | int others = 0; |
5206 | struct breakpoint *b; | |
c906108c SS |
5207 | |
5208 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5209 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5210 | if (others > 0) |
5211 | { | |
a3f17187 AC |
5212 | if (others == 1) |
5213 | printf_filtered (_("Note: breakpoint ")); | |
5214 | else /* if (others == ???) */ | |
5215 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5216 | ALL_BREAKPOINTS (b) |
6c95b8df | 5217 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5218 | { |
5219 | others--; | |
5220 | printf_filtered ("%d", b->number); | |
5221 | if (b->thread == -1 && thread != -1) | |
5222 | printf_filtered (" (all threads)"); | |
5223 | else if (b->thread != -1) | |
5224 | printf_filtered (" (thread %d)", b->thread); | |
5225 | printf_filtered ("%s%s ", | |
059fb39f | 5226 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5227 | || b->enable_state == bp_call_disabled |
5228 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5229 | ? " (disabled)" |
5230 | : b->enable_state == bp_permanent | |
5231 | ? " (permanent)" | |
5232 | : ""), | |
5233 | (others > 1) ? "," | |
5234 | : ((others == 1) ? " and" : "")); | |
5235 | } | |
a3f17187 | 5236 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5237 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5238 | printf_filtered (".\n"); |
5239 | } | |
5240 | } | |
5241 | \f | |
5242 | /* Set the default place to put a breakpoint | |
5243 | for the `break' command with no arguments. */ | |
5244 | ||
5245 | void | |
6c95b8df PA |
5246 | set_default_breakpoint (int valid, struct program_space *pspace, |
5247 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5248 | int line) |
c906108c SS |
5249 | { |
5250 | default_breakpoint_valid = valid; | |
6c95b8df | 5251 | default_breakpoint_pspace = pspace; |
c906108c SS |
5252 | default_breakpoint_address = addr; |
5253 | default_breakpoint_symtab = symtab; | |
5254 | default_breakpoint_line = line; | |
5255 | } | |
5256 | ||
e4f237da KB |
5257 | /* Return true iff it is meaningful to use the address member of |
5258 | BPT. For some breakpoint types, the address member is irrelevant | |
5259 | and it makes no sense to attempt to compare it to other addresses | |
5260 | (or use it for any other purpose either). | |
5261 | ||
5262 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
5263 | have a zero valued address and we don't want to mark breakpoints of any of |
5264 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
5265 | |
5266 | bp_watchpoint | |
2d134ed3 PA |
5267 | bp_catchpoint |
5268 | ||
5269 | */ | |
e4f237da KB |
5270 | |
5271 | static int | |
5272 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5273 | { | |
5274 | enum bptype type = bpt->type; | |
5275 | ||
2d134ed3 PA |
5276 | return (type != bp_watchpoint && type != bp_catchpoint); |
5277 | } | |
5278 | ||
5279 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5280 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5281 | ||
5282 | static int | |
5283 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5284 | { | |
2bdf28a0 JK |
5285 | /* Both of them must not be in moribund_locations. */ |
5286 | gdb_assert (loc1->owner != NULL); | |
5287 | gdb_assert (loc2->owner != NULL); | |
5288 | ||
0cf6dd15 TJB |
5289 | /* If the target can evaluate the condition expression in hardware, then we |
5290 | we need to insert both watchpoints even if they are at the same place. | |
5291 | Otherwise the watchpoint will only trigger when the condition of whichever | |
5292 | watchpoint was inserted evaluates to true, not giving a chance for GDB to | |
5293 | check the condition of the other watchpoint. */ | |
5294 | if ((loc1->owner->cond_exp | |
5295 | && target_can_accel_watchpoint_condition (loc1->address, loc1->length, | |
5296 | loc1->watchpoint_type, | |
5297 | loc1->owner->cond_exp)) | |
5298 | || (loc2->owner->cond_exp | |
5299 | && target_can_accel_watchpoint_condition (loc2->address, loc2->length, | |
5300 | loc2->watchpoint_type, | |
5301 | loc2->owner->cond_exp))) | |
5302 | return 0; | |
5303 | ||
85d721b8 PA |
5304 | /* Note that this checks the owner's type, not the location's. In |
5305 | case the target does not support read watchpoints, but does | |
5306 | support access watchpoints, we'll have bp_read_watchpoint | |
5307 | watchpoints with hw_access locations. Those should be considered | |
5308 | duplicates of hw_read locations. The hw_read locations will | |
5309 | become hw_access locations later. */ | |
2d134ed3 PA |
5310 | return (loc1->owner->type == loc2->owner->type |
5311 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5312 | && loc1->address == loc2->address | |
5313 | && loc1->length == loc2->length); | |
e4f237da KB |
5314 | } |
5315 | ||
6c95b8df PA |
5316 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5317 | same breakpoint location. In most targets, this can only be true | |
5318 | if ASPACE1 matches ASPACE2. On targets that have global | |
5319 | breakpoints, the address space doesn't really matter. */ | |
5320 | ||
5321 | static int | |
5322 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5323 | struct address_space *aspace2, CORE_ADDR addr2) | |
5324 | { | |
5325 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5326 | || aspace1 == aspace2) | |
5327 | && addr1 == addr2); | |
5328 | } | |
5329 | ||
2d134ed3 PA |
5330 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5331 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5332 | represent the same location. */ | |
5333 | ||
5334 | static int | |
5335 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5336 | { | |
2bdf28a0 JK |
5337 | int hw_point1, hw_point2; |
5338 | ||
5339 | /* Both of them must not be in moribund_locations. */ | |
5340 | gdb_assert (loc1->owner != NULL); | |
5341 | gdb_assert (loc2->owner != NULL); | |
5342 | ||
5343 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5344 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5345 | |
5346 | if (hw_point1 != hw_point2) | |
5347 | return 0; | |
5348 | else if (hw_point1) | |
5349 | return watchpoint_locations_match (loc1, loc2); | |
5350 | else | |
5351 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5352 | loc2->pspace->aspace, loc2->address); | |
5353 | } | |
5354 | ||
76897487 KB |
5355 | static void |
5356 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5357 | int bnum, int have_bnum) | |
5358 | { | |
5359 | char astr1[40]; | |
5360 | char astr2[40]; | |
5361 | ||
bb599908 PH |
5362 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5363 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5364 | if (have_bnum) |
8a3fe4f8 | 5365 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5366 | bnum, astr1, astr2); |
5367 | else | |
8a3fe4f8 | 5368 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5369 | } |
5370 | ||
5371 | /* Adjust a breakpoint's address to account for architectural constraints | |
5372 | on breakpoint placement. Return the adjusted address. Note: Very | |
5373 | few targets require this kind of adjustment. For most targets, | |
5374 | this function is simply the identity function. */ | |
5375 | ||
5376 | static CORE_ADDR | |
a6d9a66e UW |
5377 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5378 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5379 | { |
a6d9a66e | 5380 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5381 | { |
5382 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5383 | return bpaddr; | |
5384 | } | |
88f7da05 KB |
5385 | else if (bptype == bp_watchpoint |
5386 | || bptype == bp_hardware_watchpoint | |
5387 | || bptype == bp_read_watchpoint | |
5388 | || bptype == bp_access_watchpoint | |
fe798b75 | 5389 | || bptype == bp_catchpoint) |
88f7da05 KB |
5390 | { |
5391 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5392 | have their addresses modified. */ | |
5393 | return bpaddr; | |
5394 | } | |
76897487 KB |
5395 | else |
5396 | { | |
5397 | CORE_ADDR adjusted_bpaddr; | |
5398 | ||
5399 | /* Some targets have architectural constraints on the placement | |
5400 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5401 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5402 | |
5403 | /* An adjusted breakpoint address can significantly alter | |
5404 | a user's expectations. Print a warning if an adjustment | |
5405 | is required. */ | |
5406 | if (adjusted_bpaddr != bpaddr) | |
5407 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5408 | ||
5409 | return adjusted_bpaddr; | |
5410 | } | |
5411 | } | |
5412 | ||
7cc221ef DJ |
5413 | /* Allocate a struct bp_location. */ |
5414 | ||
26bb91f3 | 5415 | static struct bp_location * |
39d61571 | 5416 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5417 | { |
afe38095 | 5418 | struct bp_location *loc; |
7cc221ef DJ |
5419 | |
5420 | loc = xmalloc (sizeof (struct bp_location)); | |
5421 | memset (loc, 0, sizeof (*loc)); | |
5422 | ||
e049a4b5 | 5423 | loc->owner = bpt; |
511a6cd4 | 5424 | loc->cond = NULL; |
0d381245 VP |
5425 | loc->shlib_disabled = 0; |
5426 | loc->enabled = 1; | |
e049a4b5 | 5427 | |
39d61571 | 5428 | switch (bpt->type) |
e049a4b5 DJ |
5429 | { |
5430 | case bp_breakpoint: | |
5431 | case bp_until: | |
5432 | case bp_finish: | |
5433 | case bp_longjmp: | |
5434 | case bp_longjmp_resume: | |
186c406b TT |
5435 | case bp_exception: |
5436 | case bp_exception_resume: | |
e049a4b5 | 5437 | case bp_step_resume: |
e049a4b5 DJ |
5438 | case bp_watchpoint_scope: |
5439 | case bp_call_dummy: | |
aa7d318d | 5440 | case bp_std_terminate: |
e049a4b5 DJ |
5441 | case bp_shlib_event: |
5442 | case bp_thread_event: | |
5443 | case bp_overlay_event: | |
4efc6507 | 5444 | case bp_jit_event: |
0fd8e87f | 5445 | case bp_longjmp_master: |
aa7d318d | 5446 | case bp_std_terminate_master: |
186c406b | 5447 | case bp_exception_master: |
e049a4b5 DJ |
5448 | loc->loc_type = bp_loc_software_breakpoint; |
5449 | break; | |
5450 | case bp_hardware_breakpoint: | |
5451 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5452 | break; | |
5453 | case bp_hardware_watchpoint: | |
5454 | case bp_read_watchpoint: | |
5455 | case bp_access_watchpoint: | |
5456 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5457 | break; | |
5458 | case bp_watchpoint: | |
ce78b96d | 5459 | case bp_catchpoint: |
15c3d785 PA |
5460 | case bp_tracepoint: |
5461 | case bp_fast_tracepoint: | |
0fb4aa4b | 5462 | case bp_static_tracepoint: |
e049a4b5 DJ |
5463 | loc->loc_type = bp_loc_other; |
5464 | break; | |
5465 | default: | |
e2e0b3e5 | 5466 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5467 | } |
5468 | ||
f431efe5 | 5469 | loc->refc = 1; |
7cc221ef DJ |
5470 | return loc; |
5471 | } | |
5472 | ||
f431efe5 PA |
5473 | static void |
5474 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5475 | { |
5476 | if (loc->cond) | |
5477 | xfree (loc->cond); | |
74960c60 VP |
5478 | |
5479 | if (loc->function_name) | |
5480 | xfree (loc->function_name); | |
f431efe5 | 5481 | |
fe3f5fa8 VP |
5482 | xfree (loc); |
5483 | } | |
5484 | ||
f431efe5 PA |
5485 | /* Increment reference count. */ |
5486 | ||
5487 | static void | |
5488 | incref_bp_location (struct bp_location *bl) | |
5489 | { | |
5490 | ++bl->refc; | |
5491 | } | |
5492 | ||
5493 | /* Decrement reference count. If the reference count reaches 0, | |
5494 | destroy the bp_location. Sets *BLP to NULL. */ | |
5495 | ||
5496 | static void | |
5497 | decref_bp_location (struct bp_location **blp) | |
5498 | { | |
0807b50c PA |
5499 | gdb_assert ((*blp)->refc > 0); |
5500 | ||
f431efe5 PA |
5501 | if (--(*blp)->refc == 0) |
5502 | free_bp_location (*blp); | |
5503 | *blp = NULL; | |
5504 | } | |
5505 | ||
0d381245 VP |
5506 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
5507 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 5508 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 5509 | |
c40e75cd | 5510 | static struct breakpoint * |
a6d9a66e UW |
5511 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5512 | enum bptype bptype) | |
c906108c | 5513 | { |
52f0bd74 | 5514 | struct breakpoint *b, *b1; |
c906108c SS |
5515 | |
5516 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5517 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5518 | |
4d28f7a8 | 5519 | b->type = bptype; |
a6d9a66e | 5520 | b->gdbarch = gdbarch; |
c906108c SS |
5521 | b->language = current_language->la_language; |
5522 | b->input_radix = input_radix; | |
5523 | b->thread = -1; | |
b5de0fa7 | 5524 | b->enable_state = bp_enabled; |
c906108c SS |
5525 | b->next = 0; |
5526 | b->silent = 0; | |
5527 | b->ignore_count = 0; | |
5528 | b->commands = NULL; | |
818dd999 | 5529 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5530 | b->forked_inferior_pid = null_ptid; |
c906108c | 5531 | b->exec_pathname = NULL; |
a96d9b2e | 5532 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5533 | b->ops = NULL; |
0d381245 | 5534 | b->condition_not_parsed = 0; |
84f4c1fe | 5535 | b->py_bp_object = NULL; |
c906108c SS |
5536 | |
5537 | /* Add this breakpoint to the end of the chain | |
5538 | so that a list of breakpoints will come out in order | |
5539 | of increasing numbers. */ | |
5540 | ||
5541 | b1 = breakpoint_chain; | |
5542 | if (b1 == 0) | |
5543 | breakpoint_chain = b; | |
5544 | else | |
5545 | { | |
5546 | while (b1->next) | |
5547 | b1 = b1->next; | |
5548 | b1->next = b; | |
5549 | } | |
0d381245 VP |
5550 | return b; |
5551 | } | |
5552 | ||
5553 | /* Initialize loc->function_name. */ | |
5554 | static void | |
5555 | set_breakpoint_location_function (struct bp_location *loc) | |
5556 | { | |
2bdf28a0 JK |
5557 | gdb_assert (loc->owner != NULL); |
5558 | ||
0d381245 | 5559 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5560 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5561 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5562 | { |
5563 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5564 | NULL, NULL); | |
5565 | if (loc->function_name) | |
5566 | loc->function_name = xstrdup (loc->function_name); | |
5567 | } | |
5568 | } | |
5569 | ||
a6d9a66e UW |
5570 | /* Attempt to determine architecture of location identified by SAL. */ |
5571 | static struct gdbarch * | |
5572 | get_sal_arch (struct symtab_and_line sal) | |
5573 | { | |
5574 | if (sal.section) | |
5575 | return get_objfile_arch (sal.section->objfile); | |
5576 | if (sal.symtab) | |
5577 | return get_objfile_arch (sal.symtab->objfile); | |
5578 | ||
5579 | return NULL; | |
5580 | } | |
5581 | ||
0d381245 VP |
5582 | /* set_raw_breakpoint is a low level routine for allocating and |
5583 | partially initializing a breakpoint of type BPTYPE. The newly | |
5584 | created breakpoint's address, section, source file name, and line | |
5585 | number are provided by SAL. The newly created and partially | |
5586 | initialized breakpoint is added to the breakpoint chain and | |
5587 | is also returned as the value of this function. | |
5588 | ||
5589 | It is expected that the caller will complete the initialization of | |
5590 | the newly created breakpoint struct as well as output any status | |
5591 | information regarding the creation of a new breakpoint. In | |
5592 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5593 | number! Care should be taken to not allow an error to occur | |
5594 | prior to completing the initialization of the breakpoint. If this | |
5595 | should happen, a bogus breakpoint will be left on the chain. */ | |
5596 | ||
63c252f8 | 5597 | struct breakpoint * |
a6d9a66e UW |
5598 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5599 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5600 | { |
a6d9a66e | 5601 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5602 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5603 | struct gdbarch *loc_gdbarch; |
5604 | ||
5605 | loc_gdbarch = get_sal_arch (sal); | |
5606 | if (!loc_gdbarch) | |
5607 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5608 | |
6c95b8df PA |
5609 | if (bptype != bp_catchpoint) |
5610 | gdb_assert (sal.pspace != NULL); | |
5611 | ||
0d381245 VP |
5612 | /* Adjust the breakpoint's address prior to allocating a location. |
5613 | Once we call allocate_bp_location(), that mostly uninitialized | |
5614 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5615 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5616 | not want its scan of the location chain to find a breakpoint and |
5617 | location that's only been partially initialized. */ | |
a6d9a66e | 5618 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5619 | |
39d61571 | 5620 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5621 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5622 | b->loc->requested_address = sal.pc; |
5623 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5624 | b->loc->pspace = sal.pspace; |
5625 | ||
5626 | /* Store the program space that was used to set the breakpoint, for | |
5627 | breakpoint resetting. */ | |
5628 | b->pspace = sal.pspace; | |
0d381245 VP |
5629 | |
5630 | if (sal.symtab == NULL) | |
5631 | b->source_file = NULL; | |
5632 | else | |
1b36a34b | 5633 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5634 | b->loc->section = sal.section; |
5635 | b->line_number = sal.line; | |
5636 | ||
5637 | set_breakpoint_location_function (b->loc); | |
c906108c | 5638 | |
c906108c SS |
5639 | breakpoints_changed (); |
5640 | ||
5641 | return b; | |
5642 | } | |
5643 | ||
c2c6d25f JM |
5644 | |
5645 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5646 | instruction, hard-wired into the inferior's code. */ | |
5647 | void | |
5648 | make_breakpoint_permanent (struct breakpoint *b) | |
5649 | { | |
0d381245 | 5650 | struct bp_location *bl; |
cc59ec59 | 5651 | |
b5de0fa7 | 5652 | b->enable_state = bp_permanent; |
c2c6d25f | 5653 | |
0d381245 VP |
5654 | /* By definition, permanent breakpoints are already present in the code. |
5655 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5656 | is called in just one place, so it's hard to say if it's reasonable | |
5657 | to have permanent breakpoint with multiple locations or not, | |
5658 | but it's easy to implmement. */ | |
5659 | for (bl = b->loc; bl; bl = bl->next) | |
5660 | bl->inserted = 1; | |
c2c6d25f JM |
5661 | } |
5662 | ||
53a5351d | 5663 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5664 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5665 | initiated the operation. */ | |
c906108c SS |
5666 | |
5667 | void | |
186c406b | 5668 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5669 | { |
0fd8e87f | 5670 | struct breakpoint *b, *temp; |
186c406b | 5671 | int thread = tp->num; |
0fd8e87f UW |
5672 | |
5673 | /* To avoid having to rescan all objfile symbols at every step, | |
5674 | we maintain a list of continually-inserted but always disabled | |
5675 | longjmp "master" breakpoints. Here, we simply create momentary | |
5676 | clones of those and enable them for the requested thread. */ | |
5677 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df | 5678 | if (b->pspace == current_program_space |
186c406b TT |
5679 | && (b->type == bp_longjmp_master |
5680 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5681 | { |
5682 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5683 | |
186c406b | 5684 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5685 | clone->thread = thread; |
5686 | } | |
186c406b TT |
5687 | |
5688 | tp->initiating_frame = frame; | |
c906108c SS |
5689 | } |
5690 | ||
611c83ae | 5691 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5692 | void |
611c83ae | 5693 | delete_longjmp_breakpoint (int thread) |
c906108c | 5694 | { |
611c83ae | 5695 | struct breakpoint *b, *temp; |
c906108c | 5696 | |
611c83ae | 5697 | ALL_BREAKPOINTS_SAFE (b, temp) |
186c406b | 5698 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5699 | { |
5700 | if (b->thread == thread) | |
5701 | delete_breakpoint (b); | |
5702 | } | |
c906108c SS |
5703 | } |
5704 | ||
1900040c MS |
5705 | void |
5706 | enable_overlay_breakpoints (void) | |
5707 | { | |
52f0bd74 | 5708 | struct breakpoint *b; |
1900040c MS |
5709 | |
5710 | ALL_BREAKPOINTS (b) | |
5711 | if (b->type == bp_overlay_event) | |
5712 | { | |
5713 | b->enable_state = bp_enabled; | |
b60e7edf | 5714 | update_global_location_list (1); |
c02f5703 | 5715 | overlay_events_enabled = 1; |
1900040c MS |
5716 | } |
5717 | } | |
5718 | ||
5719 | void | |
5720 | disable_overlay_breakpoints (void) | |
5721 | { | |
52f0bd74 | 5722 | struct breakpoint *b; |
1900040c MS |
5723 | |
5724 | ALL_BREAKPOINTS (b) | |
5725 | if (b->type == bp_overlay_event) | |
5726 | { | |
5727 | b->enable_state = bp_disabled; | |
b60e7edf | 5728 | update_global_location_list (0); |
c02f5703 | 5729 | overlay_events_enabled = 0; |
1900040c MS |
5730 | } |
5731 | } | |
5732 | ||
aa7d318d TT |
5733 | /* Set an active std::terminate breakpoint for each std::terminate |
5734 | master breakpoint. */ | |
5735 | void | |
5736 | set_std_terminate_breakpoint (void) | |
5737 | { | |
5738 | struct breakpoint *b, *temp; | |
5739 | ||
5740 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5741 | if (b->pspace == current_program_space | |
5742 | && b->type == bp_std_terminate_master) | |
5743 | { | |
5744 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5745 | clone->type = bp_std_terminate; | |
5746 | } | |
5747 | } | |
5748 | ||
5749 | /* Delete all the std::terminate breakpoints. */ | |
5750 | void | |
5751 | delete_std_terminate_breakpoint (void) | |
5752 | { | |
5753 | struct breakpoint *b, *temp; | |
5754 | ||
5755 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5756 | if (b->type == bp_std_terminate) | |
5757 | delete_breakpoint (b); | |
5758 | } | |
5759 | ||
c4093a6a | 5760 | struct breakpoint * |
a6d9a66e | 5761 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5762 | { |
5763 | struct breakpoint *b; | |
c4093a6a | 5764 | |
a6d9a66e | 5765 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5766 | |
b5de0fa7 | 5767 | b->enable_state = bp_enabled; |
c4093a6a | 5768 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5769 | b->addr_string |
5770 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5771 | |
b60e7edf | 5772 | update_global_location_list_nothrow (1); |
74960c60 | 5773 | |
c4093a6a JM |
5774 | return b; |
5775 | } | |
5776 | ||
5777 | void | |
5778 | remove_thread_event_breakpoints (void) | |
5779 | { | |
5780 | struct breakpoint *b, *temp; | |
5781 | ||
5782 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5783 | if (b->type == bp_thread_event |
5784 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5785 | delete_breakpoint (b); |
5786 | } | |
5787 | ||
0101ce28 JJ |
5788 | struct captured_parse_breakpoint_args |
5789 | { | |
5790 | char **arg_p; | |
5791 | struct symtabs_and_lines *sals_p; | |
5792 | char ***addr_string_p; | |
5793 | int *not_found_ptr; | |
5794 | }; | |
5795 | ||
5796 | struct lang_and_radix | |
5797 | { | |
5798 | enum language lang; | |
5799 | int radix; | |
5800 | }; | |
5801 | ||
4efc6507 DE |
5802 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5803 | ||
5804 | struct breakpoint * | |
5805 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5806 | { | |
5807 | struct breakpoint *b; | |
5808 | ||
5809 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5810 | update_global_location_list_nothrow (1); | |
5811 | return b; | |
5812 | } | |
0101ce28 | 5813 | |
cae688ec JJ |
5814 | void |
5815 | remove_solib_event_breakpoints (void) | |
5816 | { | |
5817 | struct breakpoint *b, *temp; | |
5818 | ||
5819 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5820 | if (b->type == bp_shlib_event |
5821 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5822 | delete_breakpoint (b); |
5823 | } | |
5824 | ||
5825 | struct breakpoint * | |
a6d9a66e | 5826 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5827 | { |
5828 | struct breakpoint *b; | |
5829 | ||
a6d9a66e | 5830 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5831 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5832 | return b; |
5833 | } | |
5834 | ||
5835 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5836 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5837 | ||
5838 | void | |
cb851954 | 5839 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5840 | { |
876fa593 | 5841 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5842 | |
876fa593 | 5843 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5844 | { |
2bdf28a0 | 5845 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5846 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 5847 | |
0d381245 VP |
5848 | /* We apply the check to all breakpoints, including disabled |
5849 | for those with loc->duplicate set. This is so that when breakpoint | |
5850 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5851 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5852 | to insert those breakpoints and fail. */ | |
1042e4c0 | 5853 | if (((b->type == bp_breakpoint) |
508ccb1f | 5854 | || (b->type == bp_jit_event) |
1042e4c0 | 5855 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5856 | || (is_tracepoint (b))) |
6c95b8df | 5857 | && loc->pspace == current_program_space |
0d381245 | 5858 | && !loc->shlib_disabled |
a77053c2 | 5859 | #ifdef PC_SOLIB |
0d381245 | 5860 | && PC_SOLIB (loc->address) |
a77053c2 | 5861 | #else |
6c95b8df | 5862 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5863 | #endif |
5864 | ) | |
0d381245 VP |
5865 | { |
5866 | loc->shlib_disabled = 1; | |
5867 | } | |
cae688ec JJ |
5868 | } |
5869 | } | |
5870 | ||
84acb35a JJ |
5871 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5872 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5873 | ||
75149521 | 5874 | static void |
84acb35a JJ |
5875 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5876 | { | |
876fa593 | 5877 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5878 | int disabled_shlib_breaks = 0; |
5879 | ||
c86cf029 VP |
5880 | /* SunOS a.out shared libraries are always mapped, so do not |
5881 | disable breakpoints; they will only be reported as unloaded | |
5882 | through clear_solib when GDB discards its shared library | |
5883 | list. See clear_solib for more information. */ | |
5884 | if (exec_bfd != NULL | |
5885 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5886 | return; | |
5887 | ||
876fa593 | 5888 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5889 | { |
2bdf28a0 | 5890 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5891 | struct breakpoint *b = loc->owner; |
cc59ec59 | 5892 | |
0d381245 VP |
5893 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
5894 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5895 | && solib->pspace == loc->pspace |
e2dd7057 | 5896 | && !loc->shlib_disabled |
508ccb1f TT |
5897 | && (b->type == bp_breakpoint |
5898 | || b->type == bp_jit_event | |
5899 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5900 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5901 | { |
e2dd7057 PP |
5902 | loc->shlib_disabled = 1; |
5903 | /* At this point, we cannot rely on remove_breakpoint | |
5904 | succeeding so we must mark the breakpoint as not inserted | |
5905 | to prevent future errors occurring in remove_breakpoints. */ | |
5906 | loc->inserted = 0; | |
5907 | if (!disabled_shlib_breaks) | |
5908 | { | |
5909 | target_terminal_ours_for_output (); | |
5910 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5911 | solib->so_name); | |
84acb35a | 5912 | } |
e2dd7057 | 5913 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5914 | } |
5915 | } | |
84acb35a JJ |
5916 | } |
5917 | ||
ce78b96d JB |
5918 | /* FORK & VFORK catchpoints. */ |
5919 | ||
5920 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5921 | ||
c906108c | 5922 | static void |
ce78b96d JB |
5923 | insert_catch_fork (struct breakpoint *b) |
5924 | { | |
5925 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5926 | } | |
5927 | ||
5928 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5929 | ||
5930 | static int | |
5931 | remove_catch_fork (struct breakpoint *b) | |
5932 | { | |
5933 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5934 | } | |
5935 | ||
5936 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5937 | catchpoints. */ | |
5938 | ||
5939 | static int | |
5940 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5941 | { | |
5942 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5943 | } | |
5944 | ||
5945 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5946 | ||
5947 | static enum print_stop_action | |
5948 | print_it_catch_fork (struct breakpoint *b) | |
5949 | { | |
5950 | annotate_catchpoint (b->number); | |
5951 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5952 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5953 | return PRINT_SRC_AND_LOC; | |
5954 | } | |
5955 | ||
5956 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5957 | ||
5958 | static void | |
a6d9a66e | 5959 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5960 | { |
79a45b7d TT |
5961 | struct value_print_options opts; |
5962 | ||
5963 | get_user_print_options (&opts); | |
5964 | ||
ce78b96d JB |
5965 | /* Field 4, the address, is omitted (which makes the columns |
5966 | not line up too nicely with the headers, but the effect | |
5967 | is relatively readable). */ | |
79a45b7d | 5968 | if (opts.addressprint) |
ce78b96d JB |
5969 | ui_out_field_skip (uiout, "addr"); |
5970 | annotate_field (5); | |
5971 | ui_out_text (uiout, "fork"); | |
5972 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5973 | { | |
5974 | ui_out_text (uiout, ", process "); | |
5975 | ui_out_field_int (uiout, "what", | |
5976 | ptid_get_pid (b->forked_inferior_pid)); | |
5977 | ui_out_spaces (uiout, 1); | |
5978 | } | |
5979 | } | |
5980 | ||
5981 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5982 | catchpoints. */ | |
5983 | ||
5984 | static void | |
5985 | print_mention_catch_fork (struct breakpoint *b) | |
5986 | { | |
5987 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5988 | } | |
5989 | ||
6149aea9 PA |
5990 | /* Implement the "print_recreate" breakpoint_ops method for fork |
5991 | catchpoints. */ | |
5992 | ||
5993 | static void | |
5994 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
5995 | { | |
5996 | fprintf_unfiltered (fp, "catch fork"); | |
5997 | } | |
5998 | ||
ce78b96d JB |
5999 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6000 | ||
6001 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6002 | { | |
6003 | insert_catch_fork, | |
6004 | remove_catch_fork, | |
6005 | breakpoint_hit_catch_fork, | |
6006 | print_it_catch_fork, | |
6007 | print_one_catch_fork, | |
6149aea9 PA |
6008 | print_mention_catch_fork, |
6009 | print_recreate_catch_fork | |
ce78b96d JB |
6010 | }; |
6011 | ||
6012 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
6013 | ||
6014 | static void | |
6015 | insert_catch_vfork (struct breakpoint *b) | |
6016 | { | |
6017 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6018 | } | |
6019 | ||
6020 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
6021 | ||
6022 | static int | |
6023 | remove_catch_vfork (struct breakpoint *b) | |
6024 | { | |
6025 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6026 | } | |
6027 | ||
6028 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6029 | catchpoints. */ | |
6030 | ||
6031 | static int | |
6032 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
6033 | { | |
6034 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
6035 | } | |
6036 | ||
6037 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
6038 | ||
6039 | static enum print_stop_action | |
6040 | print_it_catch_vfork (struct breakpoint *b) | |
6041 | { | |
6042 | annotate_catchpoint (b->number); | |
6043 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6044 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6045 | return PRINT_SRC_AND_LOC; | |
6046 | } | |
6047 | ||
6048 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
6049 | ||
6050 | static void | |
a6d9a66e | 6051 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6052 | { |
79a45b7d TT |
6053 | struct value_print_options opts; |
6054 | ||
6055 | get_user_print_options (&opts); | |
ce78b96d JB |
6056 | /* Field 4, the address, is omitted (which makes the columns |
6057 | not line up too nicely with the headers, but the effect | |
6058 | is relatively readable). */ | |
79a45b7d | 6059 | if (opts.addressprint) |
ce78b96d JB |
6060 | ui_out_field_skip (uiout, "addr"); |
6061 | annotate_field (5); | |
6062 | ui_out_text (uiout, "vfork"); | |
6063 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6064 | { | |
6065 | ui_out_text (uiout, ", process "); | |
6066 | ui_out_field_int (uiout, "what", | |
6067 | ptid_get_pid (b->forked_inferior_pid)); | |
6068 | ui_out_spaces (uiout, 1); | |
6069 | } | |
6070 | } | |
6071 | ||
6072 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6073 | catchpoints. */ | |
6074 | ||
6075 | static void | |
6076 | print_mention_catch_vfork (struct breakpoint *b) | |
6077 | { | |
6078 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6079 | } | |
6080 | ||
6149aea9 PA |
6081 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6082 | catchpoints. */ | |
6083 | ||
6084 | static void | |
6085 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6086 | { | |
6087 | fprintf_unfiltered (fp, "catch vfork"); | |
6088 | } | |
6089 | ||
ce78b96d JB |
6090 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6091 | ||
6092 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6093 | { | |
6094 | insert_catch_vfork, | |
6095 | remove_catch_vfork, | |
6096 | breakpoint_hit_catch_vfork, | |
6097 | print_it_catch_vfork, | |
6098 | print_one_catch_vfork, | |
6149aea9 PA |
6099 | print_mention_catch_vfork, |
6100 | print_recreate_catch_vfork | |
ce78b96d JB |
6101 | }; |
6102 | ||
a96d9b2e SDJ |
6103 | /* Implement the "insert" breakpoint_ops method for syscall |
6104 | catchpoints. */ | |
6105 | ||
6106 | static void | |
6107 | insert_catch_syscall (struct breakpoint *b) | |
6108 | { | |
6109 | struct inferior *inf = current_inferior (); | |
6110 | ||
6111 | ++inf->total_syscalls_count; | |
6112 | if (!b->syscalls_to_be_caught) | |
6113 | ++inf->any_syscall_count; | |
6114 | else | |
6115 | { | |
6116 | int i, iter; | |
cc59ec59 | 6117 | |
a96d9b2e SDJ |
6118 | for (i = 0; |
6119 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6120 | i++) | |
6121 | { | |
6122 | int elem; | |
cc59ec59 | 6123 | |
a96d9b2e SDJ |
6124 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6125 | { | |
6126 | int old_size = VEC_length (int, inf->syscalls_counts); | |
6127 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
6128 | uintptr_t vec_addr; | |
6129 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6130 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6131 | vec_addr_offset; | |
6132 | memset ((void *) vec_addr, 0, | |
6133 | (iter + 1 - old_size) * sizeof (int)); | |
6134 | } | |
6135 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6136 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6137 | } | |
6138 | } | |
6139 | ||
6140 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6141 | inf->total_syscalls_count != 0, | |
6142 | inf->any_syscall_count, | |
6143 | VEC_length (int, inf->syscalls_counts), | |
6144 | VEC_address (int, inf->syscalls_counts)); | |
6145 | } | |
6146 | ||
6147 | /* Implement the "remove" breakpoint_ops method for syscall | |
6148 | catchpoints. */ | |
6149 | ||
6150 | static int | |
6151 | remove_catch_syscall (struct breakpoint *b) | |
6152 | { | |
6153 | struct inferior *inf = current_inferior (); | |
6154 | ||
6155 | --inf->total_syscalls_count; | |
6156 | if (!b->syscalls_to_be_caught) | |
6157 | --inf->any_syscall_count; | |
6158 | else | |
6159 | { | |
6160 | int i, iter; | |
cc59ec59 | 6161 | |
a96d9b2e SDJ |
6162 | for (i = 0; |
6163 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6164 | i++) | |
6165 | { | |
6166 | int elem; | |
6167 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6168 | /* Shouldn't happen. */ | |
6169 | continue; | |
6170 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6171 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6172 | } | |
6173 | } | |
6174 | ||
6175 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6176 | inf->total_syscalls_count != 0, | |
6177 | inf->any_syscall_count, | |
6178 | VEC_length (int, inf->syscalls_counts), | |
6179 | VEC_address (int, inf->syscalls_counts)); | |
6180 | } | |
6181 | ||
6182 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6183 | catchpoints. */ | |
6184 | ||
6185 | static int | |
6186 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6187 | { | |
6188 | /* We must check if we are catching specific syscalls in this breakpoint. | |
6189 | If we are, then we must guarantee that the called syscall is the same | |
6190 | syscall we are catching. */ | |
6191 | int syscall_number = 0; | |
6192 | ||
6193 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6194 | return 0; | |
6195 | ||
6196 | /* Now, checking if the syscall is the same. */ | |
6197 | if (b->syscalls_to_be_caught) | |
6198 | { | |
6199 | int i, iter; | |
cc59ec59 | 6200 | |
a96d9b2e SDJ |
6201 | for (i = 0; |
6202 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6203 | i++) | |
6204 | if (syscall_number == iter) | |
6205 | break; | |
6206 | /* Not the same. */ | |
6207 | if (!iter) | |
6208 | return 0; | |
6209 | } | |
6210 | ||
6211 | return 1; | |
6212 | } | |
6213 | ||
6214 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6215 | catchpoints. */ | |
6216 | ||
6217 | static enum print_stop_action | |
6218 | print_it_catch_syscall (struct breakpoint *b) | |
6219 | { | |
6220 | /* These are needed because we want to know in which state a | |
6221 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6222 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6223 | must print "called syscall" or "returned from syscall". */ | |
6224 | ptid_t ptid; | |
6225 | struct target_waitstatus last; | |
6226 | struct syscall s; | |
6227 | struct cleanup *old_chain; | |
6228 | char *syscall_id; | |
6229 | ||
6230 | get_last_target_status (&ptid, &last); | |
6231 | ||
6232 | get_syscall_by_number (last.value.syscall_number, &s); | |
6233 | ||
6234 | annotate_catchpoint (b->number); | |
6235 | ||
6236 | if (s.name == NULL) | |
6237 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6238 | else | |
6239 | syscall_id = xstrprintf ("'%s'", s.name); | |
6240 | ||
6241 | old_chain = make_cleanup (xfree, syscall_id); | |
6242 | ||
6243 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6244 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6245 | b->number, syscall_id); | |
6246 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6247 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6248 | b->number, syscall_id); | |
6249 | ||
6250 | do_cleanups (old_chain); | |
6251 | ||
6252 | return PRINT_SRC_AND_LOC; | |
6253 | } | |
6254 | ||
6255 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6256 | catchpoints. */ | |
6257 | ||
6258 | static void | |
6259 | print_one_catch_syscall (struct breakpoint *b, | |
6260 | struct bp_location **last_loc) | |
6261 | { | |
6262 | struct value_print_options opts; | |
6263 | ||
6264 | get_user_print_options (&opts); | |
6265 | /* Field 4, the address, is omitted (which makes the columns | |
6266 | not line up too nicely with the headers, but the effect | |
6267 | is relatively readable). */ | |
6268 | if (opts.addressprint) | |
6269 | ui_out_field_skip (uiout, "addr"); | |
6270 | annotate_field (5); | |
6271 | ||
6272 | if (b->syscalls_to_be_caught | |
6273 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6274 | ui_out_text (uiout, "syscalls \""); | |
6275 | else | |
6276 | ui_out_text (uiout, "syscall \""); | |
6277 | ||
6278 | if (b->syscalls_to_be_caught) | |
6279 | { | |
6280 | int i, iter; | |
6281 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6282 | |
a96d9b2e SDJ |
6283 | for (i = 0; |
6284 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6285 | i++) | |
6286 | { | |
6287 | char *x = text; | |
6288 | struct syscall s; | |
6289 | get_syscall_by_number (iter, &s); | |
6290 | ||
6291 | if (s.name != NULL) | |
6292 | text = xstrprintf ("%s%s, ", text, s.name); | |
6293 | else | |
6294 | text = xstrprintf ("%s%d, ", text, iter); | |
6295 | ||
6296 | /* We have to xfree the last 'text' (now stored at 'x') | |
6297 | because xstrprintf dinamically allocates new space for it | |
6298 | on every call. */ | |
6299 | xfree (x); | |
6300 | } | |
6301 | /* Remove the last comma. */ | |
6302 | text[strlen (text) - 2] = '\0'; | |
6303 | ui_out_field_string (uiout, "what", text); | |
6304 | } | |
6305 | else | |
6306 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6307 | ui_out_text (uiout, "\" "); | |
6308 | } | |
6309 | ||
6310 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6311 | catchpoints. */ | |
6312 | ||
6313 | static void | |
6314 | print_mention_catch_syscall (struct breakpoint *b) | |
6315 | { | |
6316 | if (b->syscalls_to_be_caught) | |
6317 | { | |
6318 | int i, iter; | |
6319 | ||
6320 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6321 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6322 | else | |
6323 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6324 | ||
6325 | for (i = 0; | |
6326 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6327 | i++) | |
6328 | { | |
6329 | struct syscall s; | |
6330 | get_syscall_by_number (iter, &s); | |
6331 | ||
6332 | if (s.name) | |
6333 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6334 | else | |
6335 | printf_filtered (" %d", s.number); | |
6336 | } | |
6337 | printf_filtered (")"); | |
6338 | } | |
6339 | else | |
6340 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6341 | b->number); | |
6342 | } | |
6343 | ||
6149aea9 PA |
6344 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6345 | catchpoints. */ | |
6346 | ||
6347 | static void | |
6348 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6349 | { | |
6350 | fprintf_unfiltered (fp, "catch syscall"); | |
6351 | ||
6352 | if (b->syscalls_to_be_caught) | |
6353 | { | |
6354 | int i, iter; | |
6355 | ||
6356 | for (i = 0; | |
6357 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6358 | i++) | |
6359 | { | |
6360 | struct syscall s; | |
6361 | ||
6362 | get_syscall_by_number (iter, &s); | |
6363 | if (s.name) | |
6364 | fprintf_unfiltered (fp, " %s", s.name); | |
6365 | else | |
6366 | fprintf_unfiltered (fp, " %d", s.number); | |
6367 | } | |
6368 | } | |
6369 | } | |
6370 | ||
a96d9b2e SDJ |
6371 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6372 | ||
6373 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6374 | { | |
6375 | insert_catch_syscall, | |
6376 | remove_catch_syscall, | |
6377 | breakpoint_hit_catch_syscall, | |
6378 | print_it_catch_syscall, | |
6379 | print_one_catch_syscall, | |
6149aea9 PA |
6380 | print_mention_catch_syscall, |
6381 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6382 | }; |
6383 | ||
6384 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6385 | ||
6386 | static int | |
6387 | syscall_catchpoint_p (struct breakpoint *b) | |
6388 | { | |
6389 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6390 | } | |
6391 | ||
6392 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6393 | but does NOT mention it nor update the global location list. | |
6394 | This is useful if you need to fill more fields in the | |
6395 | struct breakpoint before calling mention. | |
ce78b96d JB |
6396 | |
6397 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6398 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6399 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6400 | to the catchpoint. */ | |
6401 | ||
6402 | static struct breakpoint * | |
a96d9b2e SDJ |
6403 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6404 | char *cond_string, | |
6405 | struct breakpoint_ops *ops) | |
c906108c | 6406 | { |
c5aa993b JM |
6407 | struct symtab_and_line sal; |
6408 | struct breakpoint *b; | |
c5aa993b | 6409 | |
fe39c653 | 6410 | init_sal (&sal); |
6c95b8df | 6411 | sal.pspace = current_program_space; |
c5aa993b | 6412 | |
a6d9a66e | 6413 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6414 | set_breakpoint_count (breakpoint_count + 1); |
6415 | b->number = breakpoint_count; | |
ce78b96d | 6416 | |
1b36a34b | 6417 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6418 | b->thread = -1; |
c906108c | 6419 | b->addr_string = NULL; |
b5de0fa7 EZ |
6420 | b->enable_state = bp_enabled; |
6421 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6422 | b->ops = ops; |
c5aa993b | 6423 | |
a96d9b2e SDJ |
6424 | return b; |
6425 | } | |
6426 | ||
6427 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6428 | ||
6429 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6430 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6431 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6432 | to the catchpoint. */ | |
6433 | ||
6434 | static struct breakpoint * | |
6435 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6436 | char *cond_string, struct breakpoint_ops *ops) | |
6437 | { | |
6438 | struct breakpoint *b = | |
6439 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6440 | ||
c906108c | 6441 | mention (b); |
ce78b96d | 6442 | update_global_location_list (1); |
c906108c | 6443 | |
ce78b96d | 6444 | return b; |
c906108c | 6445 | } |
c5aa993b | 6446 | |
9b70b993 | 6447 | static void |
a6d9a66e UW |
6448 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6449 | int tempflag, char *cond_string, | |
ce78b96d | 6450 | struct breakpoint_ops *ops) |
c906108c | 6451 | { |
a6d9a66e UW |
6452 | struct breakpoint *b |
6453 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6454 | |
6455 | /* FIXME: We should put this information in a breakpoint private data | |
6456 | area. */ | |
6457 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6458 | } |
6459 | ||
fe798b75 JB |
6460 | /* Exec catchpoints. */ |
6461 | ||
9b70b993 | 6462 | static void |
fe798b75 | 6463 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6464 | { |
fe798b75 JB |
6465 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6466 | } | |
c906108c | 6467 | |
fe798b75 JB |
6468 | static int |
6469 | remove_catch_exec (struct breakpoint *b) | |
6470 | { | |
6471 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6472 | } | |
c906108c | 6473 | |
fe798b75 JB |
6474 | static int |
6475 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6476 | { | |
6477 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6478 | } | |
c906108c | 6479 | |
fe798b75 JB |
6480 | static enum print_stop_action |
6481 | print_it_catch_exec (struct breakpoint *b) | |
6482 | { | |
6483 | annotate_catchpoint (b->number); | |
6484 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6485 | b->exec_pathname); | |
6486 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6487 | } |
6488 | ||
fe798b75 | 6489 | static void |
a6d9a66e | 6490 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6491 | { |
6492 | struct value_print_options opts; | |
6493 | ||
6494 | get_user_print_options (&opts); | |
6495 | ||
6496 | /* Field 4, the address, is omitted (which makes the columns | |
6497 | not line up too nicely with the headers, but the effect | |
6498 | is relatively readable). */ | |
6499 | if (opts.addressprint) | |
6500 | ui_out_field_skip (uiout, "addr"); | |
6501 | annotate_field (5); | |
6502 | ui_out_text (uiout, "exec"); | |
6503 | if (b->exec_pathname != NULL) | |
6504 | { | |
6505 | ui_out_text (uiout, ", program \""); | |
6506 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6507 | ui_out_text (uiout, "\" "); | |
6508 | } | |
6509 | } | |
6510 | ||
6511 | static void | |
6512 | print_mention_catch_exec (struct breakpoint *b) | |
6513 | { | |
6514 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6515 | } | |
6516 | ||
6149aea9 PA |
6517 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6518 | catchpoints. */ | |
6519 | ||
6520 | static void | |
6521 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6522 | { | |
6523 | fprintf_unfiltered (fp, "catch exec"); | |
6524 | } | |
6525 | ||
fe798b75 JB |
6526 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6527 | { | |
6528 | insert_catch_exec, | |
6529 | remove_catch_exec, | |
6530 | breakpoint_hit_catch_exec, | |
6531 | print_it_catch_exec, | |
6532 | print_one_catch_exec, | |
6149aea9 PA |
6533 | print_mention_catch_exec, |
6534 | print_recreate_catch_exec | |
fe798b75 JB |
6535 | }; |
6536 | ||
a96d9b2e SDJ |
6537 | static void |
6538 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6539 | struct breakpoint_ops *ops) | |
6540 | { | |
6541 | struct gdbarch *gdbarch = get_current_arch (); | |
6542 | struct breakpoint *b = | |
6543 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6544 | ||
6545 | b->syscalls_to_be_caught = filter; | |
6546 | ||
6547 | /* Now, we have to mention the breakpoint and update the global | |
6548 | location list. */ | |
6549 | mention (b); | |
6550 | update_global_location_list (1); | |
6551 | } | |
6552 | ||
c906108c | 6553 | static int |
fba45db2 | 6554 | hw_breakpoint_used_count (void) |
c906108c | 6555 | { |
52f0bd74 | 6556 | struct breakpoint *b; |
c906108c SS |
6557 | int i = 0; |
6558 | ||
6559 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6560 | { |
d6b74ac4 | 6561 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6562 | i++; |
6563 | } | |
c906108c SS |
6564 | |
6565 | return i; | |
6566 | } | |
6567 | ||
6568 | static int | |
fba45db2 | 6569 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6570 | { |
52f0bd74 | 6571 | struct breakpoint *b; |
c906108c SS |
6572 | int i = 0; |
6573 | ||
6574 | *other_type_used = 0; | |
6575 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6576 | { |
468d015d | 6577 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6578 | { |
6579 | if (b->type == type) | |
6580 | i++; | |
cc60f2e3 | 6581 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6582 | *other_type_used = 1; |
6583 | } | |
6584 | } | |
c906108c SS |
6585 | return i; |
6586 | } | |
6587 | ||
c906108c | 6588 | void |
fba45db2 | 6589 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6590 | { |
c5aa993b | 6591 | struct breakpoint *b; |
c906108c SS |
6592 | |
6593 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6594 | { |
cc60f2e3 | 6595 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6596 | { |
b5de0fa7 | 6597 | b->enable_state = bp_call_disabled; |
b60e7edf | 6598 | update_global_location_list (0); |
c5aa993b JM |
6599 | } |
6600 | } | |
c906108c SS |
6601 | } |
6602 | ||
6603 | void | |
fba45db2 | 6604 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6605 | { |
c5aa993b | 6606 | struct breakpoint *b; |
c906108c SS |
6607 | |
6608 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6609 | { |
cc60f2e3 | 6610 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6611 | { |
b5de0fa7 | 6612 | b->enable_state = bp_enabled; |
b60e7edf | 6613 | update_global_location_list (1); |
c5aa993b JM |
6614 | } |
6615 | } | |
c906108c SS |
6616 | } |
6617 | ||
8bea4e01 UW |
6618 | void |
6619 | disable_breakpoints_before_startup (void) | |
6620 | { | |
6621 | struct breakpoint *b; | |
6622 | int found = 0; | |
6623 | ||
6624 | ALL_BREAKPOINTS (b) | |
6625 | { | |
6c95b8df PA |
6626 | if (b->pspace != current_program_space) |
6627 | continue; | |
6628 | ||
8bea4e01 UW |
6629 | if ((b->type == bp_breakpoint |
6630 | || b->type == bp_hardware_breakpoint) | |
6631 | && breakpoint_enabled (b)) | |
6632 | { | |
6633 | b->enable_state = bp_startup_disabled; | |
6634 | found = 1; | |
6635 | } | |
6636 | } | |
6637 | ||
6638 | if (found) | |
6639 | update_global_location_list (0); | |
6640 | ||
6c95b8df | 6641 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6642 | } |
6643 | ||
6644 | void | |
6645 | enable_breakpoints_after_startup (void) | |
6646 | { | |
6647 | struct breakpoint *b; | |
6648 | int found = 0; | |
6649 | ||
6c95b8df | 6650 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6651 | |
6652 | ALL_BREAKPOINTS (b) | |
6653 | { | |
6c95b8df PA |
6654 | if (b->pspace != current_program_space) |
6655 | continue; | |
6656 | ||
8bea4e01 UW |
6657 | if ((b->type == bp_breakpoint |
6658 | || b->type == bp_hardware_breakpoint) | |
6659 | && b->enable_state == bp_startup_disabled) | |
6660 | { | |
6661 | b->enable_state = bp_enabled; | |
6662 | found = 1; | |
6663 | } | |
6664 | } | |
6665 | ||
6666 | if (found) | |
6667 | breakpoint_re_set (); | |
6668 | } | |
6669 | ||
c906108c SS |
6670 | |
6671 | /* Set a breakpoint that will evaporate an end of command | |
6672 | at address specified by SAL. | |
6673 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6674 | ||
6675 | struct breakpoint * | |
a6d9a66e UW |
6676 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6677 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6678 | { |
52f0bd74 | 6679 | struct breakpoint *b; |
edb3359d DJ |
6680 | |
6681 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6682 | one. */ | |
6683 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6684 | ||
a6d9a66e | 6685 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6686 | b->enable_state = bp_enabled; |
6687 | b->disposition = disp_donttouch; | |
818dd999 | 6688 | b->frame_id = frame_id; |
c906108c SS |
6689 | |
6690 | /* If we're debugging a multi-threaded program, then we | |
6691 | want momentary breakpoints to be active in only a | |
6692 | single thread of control. */ | |
39f77062 KB |
6693 | if (in_thread_list (inferior_ptid)) |
6694 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6695 | |
b60e7edf | 6696 | update_global_location_list_nothrow (1); |
74960c60 | 6697 | |
c906108c SS |
6698 | return b; |
6699 | } | |
611c83ae | 6700 | |
e58b0e63 PA |
6701 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6702 | ORIG is NULL. */ | |
6703 | ||
6704 | struct breakpoint * | |
6705 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6706 | { | |
6707 | struct breakpoint *copy; | |
6708 | ||
6709 | /* If there's nothing to clone, then return nothing. */ | |
6710 | if (orig == NULL) | |
6711 | return NULL; | |
6712 | ||
a6d9a66e | 6713 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6714 | copy->loc = allocate_bp_location (copy); |
6715 | set_breakpoint_location_function (copy->loc); | |
6716 | ||
a6d9a66e | 6717 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6718 | copy->loc->requested_address = orig->loc->requested_address; |
6719 | copy->loc->address = orig->loc->address; | |
6720 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6721 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6722 | |
6723 | if (orig->source_file == NULL) | |
6724 | copy->source_file = NULL; | |
6725 | else | |
6726 | copy->source_file = xstrdup (orig->source_file); | |
6727 | ||
6728 | copy->line_number = orig->line_number; | |
6729 | copy->frame_id = orig->frame_id; | |
6730 | copy->thread = orig->thread; | |
6c95b8df | 6731 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6732 | |
6733 | copy->enable_state = bp_enabled; | |
6734 | copy->disposition = disp_donttouch; | |
6735 | copy->number = internal_breakpoint_number--; | |
6736 | ||
6737 | update_global_location_list_nothrow (0); | |
6738 | return copy; | |
6739 | } | |
6740 | ||
611c83ae | 6741 | struct breakpoint * |
a6d9a66e UW |
6742 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6743 | enum bptype type) | |
611c83ae PA |
6744 | { |
6745 | struct symtab_and_line sal; | |
6746 | ||
6747 | sal = find_pc_line (pc, 0); | |
6748 | sal.pc = pc; | |
6749 | sal.section = find_pc_overlay (pc); | |
6750 | sal.explicit_pc = 1; | |
6751 | ||
a6d9a66e | 6752 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6753 | } |
c906108c | 6754 | \f |
c5aa993b | 6755 | |
c906108c SS |
6756 | /* Tell the user we have just set a breakpoint B. */ |
6757 | ||
6758 | static void | |
fba45db2 | 6759 | mention (struct breakpoint *b) |
c906108c SS |
6760 | { |
6761 | int say_where = 0; | |
fa8a61dc | 6762 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6763 | struct value_print_options opts; |
6764 | ||
6765 | get_user_print_options (&opts); | |
8b93c638 | 6766 | |
9a4105ab AC |
6767 | /* FIXME: This is misplaced; mention() is called by things (like |
6768 | hitting a watchpoint) other than breakpoint creation. It should | |
6769 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6770 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6771 | observer_notify_breakpoint_created (b->number); |
c906108c | 6772 | |
3086aeae DJ |
6773 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6774 | b->ops->print_mention (b); | |
6775 | else | |
6776 | switch (b->type) | |
6777 | { | |
6778 | case bp_none: | |
a3f17187 | 6779 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6780 | break; |
6781 | case bp_watchpoint: | |
6782 | ui_out_text (uiout, "Watchpoint "); | |
6783 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6784 | ui_out_field_int (uiout, "number", b->number); | |
6785 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6786 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6787 | do_cleanups (ui_out_chain); |
6788 | break; | |
6789 | case bp_hardware_watchpoint: | |
6790 | ui_out_text (uiout, "Hardware watchpoint "); | |
6791 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6792 | ui_out_field_int (uiout, "number", b->number); | |
6793 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6794 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6795 | do_cleanups (ui_out_chain); |
6796 | break; | |
6797 | case bp_read_watchpoint: | |
6798 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6799 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6800 | ui_out_field_int (uiout, "number", b->number); | |
6801 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6802 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6803 | do_cleanups (ui_out_chain); |
6804 | break; | |
6805 | case bp_access_watchpoint: | |
6806 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6807 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6808 | ui_out_field_int (uiout, "number", b->number); | |
6809 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6810 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6811 | do_cleanups (ui_out_chain); |
6812 | break; | |
6813 | case bp_breakpoint: | |
6814 | if (ui_out_is_mi_like_p (uiout)) | |
6815 | { | |
6816 | say_where = 0; | |
6817 | break; | |
6818 | } | |
2cec12e5 AR |
6819 | if (b->disposition == disp_del) |
6820 | printf_filtered (_("Temporary breakpoint")); | |
6821 | else | |
6822 | printf_filtered (_("Breakpoint")); | |
6823 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6824 | say_where = 1; |
6825 | break; | |
6826 | case bp_hardware_breakpoint: | |
6827 | if (ui_out_is_mi_like_p (uiout)) | |
6828 | { | |
6829 | say_where = 0; | |
6830 | break; | |
6831 | } | |
a3f17187 | 6832 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6833 | say_where = 1; |
6834 | break; | |
1042e4c0 SS |
6835 | case bp_tracepoint: |
6836 | if (ui_out_is_mi_like_p (uiout)) | |
6837 | { | |
6838 | say_where = 0; | |
6839 | break; | |
6840 | } | |
6841 | printf_filtered (_("Tracepoint")); | |
6842 | printf_filtered (_(" %d"), b->number); | |
6843 | say_where = 1; | |
6844 | break; | |
7a697b8d SS |
6845 | case bp_fast_tracepoint: |
6846 | if (ui_out_is_mi_like_p (uiout)) | |
6847 | { | |
6848 | say_where = 0; | |
6849 | break; | |
6850 | } | |
6851 | printf_filtered (_("Fast tracepoint")); | |
6852 | printf_filtered (_(" %d"), b->number); | |
6853 | say_where = 1; | |
6854 | break; | |
0fb4aa4b PA |
6855 | case bp_static_tracepoint: |
6856 | if (ui_out_is_mi_like_p (uiout)) | |
6857 | { | |
6858 | say_where = 0; | |
6859 | break; | |
6860 | } | |
6861 | printf_filtered (_("Static tracepoint")); | |
6862 | printf_filtered (_(" %d"), b->number); | |
6863 | say_where = 1; | |
6864 | break; | |
3086aeae DJ |
6865 | |
6866 | case bp_until: | |
6867 | case bp_finish: | |
6868 | case bp_longjmp: | |
6869 | case bp_longjmp_resume: | |
186c406b TT |
6870 | case bp_exception: |
6871 | case bp_exception_resume: | |
3086aeae | 6872 | case bp_step_resume: |
3086aeae | 6873 | case bp_call_dummy: |
aa7d318d | 6874 | case bp_std_terminate: |
3086aeae DJ |
6875 | case bp_watchpoint_scope: |
6876 | case bp_shlib_event: | |
6877 | case bp_thread_event: | |
6878 | case bp_overlay_event: | |
4efc6507 | 6879 | case bp_jit_event: |
0fd8e87f | 6880 | case bp_longjmp_master: |
aa7d318d | 6881 | case bp_std_terminate_master: |
186c406b | 6882 | case bp_exception_master: |
3086aeae DJ |
6883 | break; |
6884 | } | |
c906108c | 6885 | |
c906108c SS |
6886 | if (say_where) |
6887 | { | |
a3f17187 AC |
6888 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6889 | single string. */ | |
0d381245 | 6890 | if (b->loc == NULL) |
c906108c | 6891 | { |
a3f17187 | 6892 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6893 | } |
6894 | else | |
6895 | { | |
79a45b7d | 6896 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6897 | { |
6898 | printf_filtered (" at "); | |
5af949e3 UW |
6899 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6900 | gdb_stdout); | |
0101ce28 JJ |
6901 | } |
6902 | if (b->source_file) | |
6903 | printf_filtered (": file %s, line %d.", | |
6904 | b->source_file, b->line_number); | |
0d381245 VP |
6905 | |
6906 | if (b->loc->next) | |
6907 | { | |
6908 | struct bp_location *loc = b->loc; | |
6909 | int n = 0; | |
6910 | for (; loc; loc = loc->next) | |
6911 | ++n; | |
6912 | printf_filtered (" (%d locations)", n); | |
6913 | } | |
6914 | ||
c906108c | 6915 | } |
c906108c | 6916 | } |
9dc5e2a9 | 6917 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6918 | return; |
c906108c SS |
6919 | printf_filtered ("\n"); |
6920 | } | |
c906108c | 6921 | \f |
c5aa993b | 6922 | |
0d381245 | 6923 | static struct bp_location * |
39d61571 | 6924 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6925 | const struct symtab_and_line *sal) |
6926 | { | |
6927 | struct bp_location *loc, **tmp; | |
6928 | ||
39d61571 | 6929 | loc = allocate_bp_location (b); |
0d381245 VP |
6930 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6931 | ; | |
6932 | *tmp = loc; | |
a6d9a66e UW |
6933 | loc->gdbarch = get_sal_arch (*sal); |
6934 | if (!loc->gdbarch) | |
6935 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6936 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6937 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6938 | loc->requested_address, b->type); | |
6c95b8df PA |
6939 | loc->pspace = sal->pspace; |
6940 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6941 | loc->section = sal->section; |
6942 | ||
6943 | set_breakpoint_location_function (loc); | |
6944 | return loc; | |
6945 | } | |
514f746b AR |
6946 | \f |
6947 | ||
6948 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6949 | return 0 otherwise. */ | |
6950 | ||
6951 | static int | |
6952 | bp_loc_is_permanent (struct bp_location *loc) | |
6953 | { | |
6954 | int len; | |
6955 | CORE_ADDR addr; | |
6956 | const gdb_byte *brk; | |
6957 | gdb_byte *target_mem; | |
939c61fa JK |
6958 | struct cleanup *cleanup; |
6959 | int retval = 0; | |
514f746b AR |
6960 | |
6961 | gdb_assert (loc != NULL); | |
6962 | ||
6963 | addr = loc->address; | |
a6d9a66e | 6964 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6965 | |
939c61fa JK |
6966 | /* Software breakpoints unsupported? */ |
6967 | if (brk == NULL) | |
6968 | return 0; | |
6969 | ||
514f746b AR |
6970 | target_mem = alloca (len); |
6971 | ||
939c61fa JK |
6972 | /* Enable the automatic memory restoration from breakpoints while |
6973 | we read the memory. Otherwise we could say about our temporary | |
6974 | breakpoints they are permanent. */ | |
6c95b8df PA |
6975 | cleanup = save_current_space_and_thread (); |
6976 | ||
6977 | switch_to_program_space_and_thread (loc->pspace); | |
6978 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6979 | |
514f746b AR |
6980 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6981 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6982 | retval = 1; |
514f746b | 6983 | |
939c61fa JK |
6984 | do_cleanups (cleanup); |
6985 | ||
6986 | return retval; | |
514f746b AR |
6987 | } |
6988 | ||
6989 | ||
c3f6f71d | 6990 | |
018d34a4 VP |
6991 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6992 | as textual description of the location, and COND_STRING | |
db107f19 | 6993 | as condition expression. */ |
018d34a4 VP |
6994 | |
6995 | static void | |
8cdf0e15 VP |
6996 | create_breakpoint_sal (struct gdbarch *gdbarch, |
6997 | struct symtabs_and_lines sals, char *addr_string, | |
6998 | char *cond_string, | |
6999 | enum bptype type, enum bpdisp disposition, | |
7000 | int thread, int task, int ignore_count, | |
84f4c1fe PM |
7001 | struct breakpoint_ops *ops, int from_tty, |
7002 | int enabled, int internal) | |
018d34a4 | 7003 | { |
0d381245 VP |
7004 | struct breakpoint *b = NULL; |
7005 | int i; | |
018d34a4 VP |
7006 | |
7007 | if (type == bp_hardware_breakpoint) | |
7008 | { | |
7009 | int i = hw_breakpoint_used_count (); | |
7010 | int target_resources_ok = | |
d92524f1 | 7011 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7012 | i + 1, 0); |
7013 | if (target_resources_ok == 0) | |
7014 | error (_("No hardware breakpoint support in the target.")); | |
7015 | else if (target_resources_ok < 0) | |
7016 | error (_("Hardware breakpoints used exceeds limit.")); | |
7017 | } | |
7018 | ||
6c95b8df PA |
7019 | gdb_assert (sals.nelts > 0); |
7020 | ||
0d381245 VP |
7021 | for (i = 0; i < sals.nelts; ++i) |
7022 | { | |
7023 | struct symtab_and_line sal = sals.sals[i]; | |
7024 | struct bp_location *loc; | |
7025 | ||
7026 | if (from_tty) | |
5af949e3 UW |
7027 | { |
7028 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7029 | if (!loc_gdbarch) | |
7030 | loc_gdbarch = gdbarch; | |
7031 | ||
7032 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7033 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7034 | } |
0d381245 VP |
7035 | |
7036 | if (i == 0) | |
7037 | { | |
a6d9a66e | 7038 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7039 | set_breakpoint_number (internal, b); |
0d381245 | 7040 | b->thread = thread; |
4a306c9a | 7041 | b->task = task; |
018d34a4 | 7042 | |
0d381245 VP |
7043 | b->cond_string = cond_string; |
7044 | b->ignore_count = ignore_count; | |
41447f92 | 7045 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7046 | b->disposition = disposition; |
6c95b8df PA |
7047 | b->pspace = sals.sals[0].pspace; |
7048 | ||
0fb4aa4b PA |
7049 | if (type == bp_static_tracepoint) |
7050 | { | |
7051 | struct static_tracepoint_marker marker; | |
7052 | ||
7053 | if (is_marker_spec (addr_string)) | |
7054 | { | |
7055 | /* We already know the marker exists, otherwise, we | |
7056 | wouldn't see a sal for it. */ | |
7057 | char *p = &addr_string[3]; | |
7058 | char *endp; | |
7059 | char *marker_str; | |
7060 | int i; | |
7061 | ||
7062 | while (*p == ' ' || *p == '\t') | |
7063 | p++; | |
7064 | ||
7065 | endp = p; | |
7066 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7067 | endp++; | |
7068 | ||
7069 | marker_str = savestring (p, endp - p); | |
7070 | b->static_trace_marker_id = marker_str; | |
7071 | ||
7072 | printf_filtered (_("Probed static tracepoint marker \"%s\"\n"), | |
7073 | b->static_trace_marker_id); | |
7074 | } | |
7075 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7076 | { | |
7077 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7078 | release_static_tracepoint_marker (&marker); | |
7079 | ||
7080 | printf_filtered (_("Probed static tracepoint marker \"%s\"\n"), | |
7081 | b->static_trace_marker_id); | |
7082 | } | |
7083 | else | |
7084 | warning (_("\ | |
7085 | Couldn't determine the static tracepoint marker to probe")); | |
7086 | } | |
7087 | ||
6c95b8df | 7088 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7089 | && (b->type == bp_breakpoint |
7090 | || b->type == bp_hardware_breakpoint)) | |
7091 | b->enable_state = bp_startup_disabled; | |
7092 | ||
0d381245 VP |
7093 | loc = b->loc; |
7094 | } | |
7095 | else | |
018d34a4 | 7096 | { |
39d61571 | 7097 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7098 | } |
7099 | ||
514f746b AR |
7100 | if (bp_loc_is_permanent (loc)) |
7101 | make_breakpoint_permanent (b); | |
7102 | ||
0d381245 VP |
7103 | if (b->cond_string) |
7104 | { | |
7105 | char *arg = b->cond_string; | |
d32a6982 | 7106 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7107 | if (*arg) |
db107f19 | 7108 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7109 | } |
0d381245 | 7110 | } |
018d34a4 VP |
7111 | |
7112 | if (addr_string) | |
7113 | b->addr_string = addr_string; | |
7114 | else | |
7115 | /* addr_string has to be used or breakpoint_re_set will delete | |
7116 | me. */ | |
5af949e3 UW |
7117 | b->addr_string |
7118 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7119 | |
604133b5 | 7120 | b->ops = ops; |
84f4c1fe PM |
7121 | if (internal) |
7122 | /* Do not mention breakpoints with a negative number, but do | |
7123 | notify observers. */ | |
7124 | observer_notify_breakpoint_created (b->number); | |
7125 | else | |
7126 | mention (b); | |
018d34a4 VP |
7127 | } |
7128 | ||
ed0616c6 VP |
7129 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7130 | elements to fill the void space. */ | |
2c0b251b PA |
7131 | static void |
7132 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7133 | { |
7134 | int i = index_to_remove+1; | |
7135 | int last_index = sal->nelts-1; | |
7136 | ||
7137 | for (;i <= last_index; ++i) | |
7138 | sal->sals[i-1] = sal->sals[i]; | |
7139 | ||
7140 | --(sal->nelts); | |
7141 | } | |
7142 | ||
6c95b8df PA |
7143 | /* If appropriate, obtains all sals that correspond to the same file |
7144 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7145 | will want to set a breakpoint at foo.c:line, and not really care | |
7146 | about program spaces. This is done only if SAL does not have | |
7147 | explicit PC and has line and file information. If we got just a | |
7148 | single expanded sal, return the original. | |
ed0616c6 | 7149 | |
6c95b8df PA |
7150 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7151 | which the name of enclosing function is different from SAL. This | |
7152 | makes sure that if we have breakpoint originally set in template | |
7153 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7154 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7155 | |
2c0b251b | 7156 | static struct symtabs_and_lines |
ed0616c6 VP |
7157 | expand_line_sal_maybe (struct symtab_and_line sal) |
7158 | { | |
7159 | struct symtabs_and_lines expanded; | |
7160 | CORE_ADDR original_pc = sal.pc; | |
7161 | char *original_function = NULL; | |
7162 | int found; | |
7163 | int i; | |
6c95b8df | 7164 | struct cleanup *old_chain; |
ed0616c6 VP |
7165 | |
7166 | /* If we have explicit pc, don't expand. | |
7167 | If we have no line number, we can't expand. */ | |
7168 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7169 | { | |
7170 | expanded.nelts = 1; | |
7171 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7172 | expanded.sals[0] = sal; | |
7173 | return expanded; | |
7174 | } | |
7175 | ||
7176 | sal.pc = 0; | |
6c95b8df PA |
7177 | |
7178 | old_chain = save_current_space_and_thread (); | |
7179 | ||
7180 | switch_to_program_space_and_thread (sal.pspace); | |
7181 | ||
ed0616c6 | 7182 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7183 | |
7184 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7185 | expanded = expand_line_sal (sal); |
6c95b8df | 7186 | |
ed0616c6 VP |
7187 | if (expanded.nelts == 1) |
7188 | { | |
3dba1c98 JB |
7189 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7190 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7191 | xfree (expanded.sals); |
7192 | expanded.nelts = 1; | |
7193 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7194 | sal.pc = original_pc; | |
7195 | expanded.sals[0] = sal; | |
3dba1c98 | 7196 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7197 | do_cleanups (old_chain); |
ed0616c6 VP |
7198 | return expanded; |
7199 | } | |
7200 | ||
7201 | if (!sal.explicit_line) | |
7202 | { | |
7203 | CORE_ADDR func_addr, func_end; | |
7204 | for (i = 0; i < expanded.nelts; ++i) | |
7205 | { | |
7206 | CORE_ADDR pc = expanded.sals[i].pc; | |
7207 | char *this_function; | |
6c95b8df PA |
7208 | |
7209 | /* We need to switch threads as well since we're about to | |
7210 | read memory. */ | |
7211 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7212 | ||
ed0616c6 VP |
7213 | if (find_pc_partial_function (pc, &this_function, |
7214 | &func_addr, &func_end)) | |
7215 | { | |
059fb39f PM |
7216 | if (this_function |
7217 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7218 | { |
7219 | remove_sal (&expanded, i); | |
7220 | --i; | |
7221 | } | |
ed0616c6 VP |
7222 | } |
7223 | } | |
7224 | } | |
059acae7 UW |
7225 | |
7226 | /* Skip the function prologue if necessary. */ | |
7227 | for (i = 0; i < expanded.nelts; ++i) | |
7228 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7229 | |
6c95b8df PA |
7230 | do_cleanups (old_chain); |
7231 | ||
ed0616c6 VP |
7232 | if (expanded.nelts <= 1) |
7233 | { | |
7234 | /* This is un ugly workaround. If we get zero | |
7235 | expanded sals then something is really wrong. | |
7236 | Fix that by returnign the original sal. */ | |
7237 | xfree (expanded.sals); | |
7238 | expanded.nelts = 1; | |
7239 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7240 | sal.pc = original_pc; | |
7241 | expanded.sals[0] = sal; | |
7242 | return expanded; | |
7243 | } | |
7244 | ||
7245 | if (original_pc) | |
7246 | { | |
7247 | found = 0; | |
7248 | for (i = 0; i < expanded.nelts; ++i) | |
7249 | if (expanded.sals[i].pc == original_pc) | |
7250 | { | |
7251 | found = 1; | |
7252 | break; | |
7253 | } | |
7254 | gdb_assert (found); | |
7255 | } | |
7256 | ||
7257 | return expanded; | |
7258 | } | |
7259 | ||
018d34a4 VP |
7260 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7261 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7262 | value. COND_STRING, if not NULL, specified the condition to be | |
7263 | used for all breakpoints. Essentially the only case where | |
7264 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7265 | function. In that case, it's still not possible to specify | |
7266 | separate conditions for different overloaded functions, so | |
7267 | we take just a single condition string. | |
7268 | ||
c3f6f71d | 7269 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7270 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7271 | array contents). If the function fails (error() is called), the |
7272 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
7273 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
7274 | |
7275 | static void | |
8cdf0e15 VP |
7276 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7277 | struct symtabs_and_lines sals, char **addr_string, | |
7278 | char *cond_string, | |
7279 | enum bptype type, enum bpdisp disposition, | |
7280 | int thread, int task, int ignore_count, | |
7281 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7282 | int enabled, int internal) |
c906108c | 7283 | { |
018d34a4 | 7284 | int i; |
cc59ec59 | 7285 | |
018d34a4 | 7286 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7287 | { |
ed0616c6 VP |
7288 | struct symtabs_and_lines expanded = |
7289 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7290 | |
8cdf0e15 VP |
7291 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7292 | cond_string, type, disposition, | |
84f4c1fe PM |
7293 | thread, task, ignore_count, ops, |
7294 | from_tty, enabled, internal); | |
c3f6f71d | 7295 | } |
c3f6f71d | 7296 | } |
c906108c | 7297 | |
c3f6f71d JM |
7298 | /* Parse ARG which is assumed to be a SAL specification possibly |
7299 | followed by conditionals. On return, SALS contains an array of SAL | |
7300 | addresses found. ADDR_STRING contains a vector of (canonical) | |
7301 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7302 | |
b9362cc7 | 7303 | static void |
c3f6f71d JM |
7304 | parse_breakpoint_sals (char **address, |
7305 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7306 | char ***addr_string, |
7307 | int *not_found_ptr) | |
c3f6f71d JM |
7308 | { |
7309 | char *addr_start = *address; | |
cc59ec59 | 7310 | |
c3f6f71d JM |
7311 | *addr_string = NULL; |
7312 | /* If no arg given, or if first arg is 'if ', use the default | |
7313 | breakpoint. */ | |
7314 | if ((*address) == NULL | |
7315 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7316 | { |
7317 | if (default_breakpoint_valid) | |
7318 | { | |
c3f6f71d | 7319 | struct symtab_and_line sal; |
cc59ec59 | 7320 | |
fe39c653 | 7321 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 7322 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7323 | xmalloc (sizeof (struct symtab_and_line)); |
7324 | sal.pc = default_breakpoint_address; | |
7325 | sal.line = default_breakpoint_line; | |
7326 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7327 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7328 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
7329 | |
7330 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
7331 | the default_breakpoint_address. So make sure to set | |
7332 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
7333 | sals to include all other instances with the same symtab and line. | |
7334 | */ | |
7335 | sal.explicit_pc = 1; | |
7336 | ||
c3f6f71d JM |
7337 | sals->sals[0] = sal; |
7338 | sals->nelts = 1; | |
c906108c SS |
7339 | } |
7340 | else | |
8a3fe4f8 | 7341 | error (_("No default breakpoint address now.")); |
c906108c SS |
7342 | } |
7343 | else | |
7344 | { | |
c906108c | 7345 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
7346 | current_source_symtab (which is decode_line_1's default). This |
7347 | should produce the results we want almost all of the time while | |
1aeae86e AF |
7348 | leaving default_breakpoint_* alone. |
7349 | ObjC: However, don't match an Objective-C method name which | |
7350 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7351 | |
c214a6fd | 7352 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7353 | |
c906108c | 7354 | if (default_breakpoint_valid |
0378c332 | 7355 | && (!cursal.symtab |
1aeae86e AF |
7356 | || ((strchr ("+-", (*address)[0]) != NULL) |
7357 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7358 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7359 | default_breakpoint_line, addr_string, |
7360 | not_found_ptr); | |
c906108c | 7361 | else |
0101ce28 JJ |
7362 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7363 | addr_string, not_found_ptr); | |
c906108c | 7364 | } |
c3f6f71d JM |
7365 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7366 | if (sals->nelts > 0 && *addr_string == NULL) | |
7367 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7368 | if (addr_start != (*address)) | |
c906108c | 7369 | { |
c3f6f71d | 7370 | int i; |
cc59ec59 | 7371 | |
c3f6f71d | 7372 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7373 | { |
c3f6f71d JM |
7374 | /* Add the string if not present. */ |
7375 | if ((*addr_string)[i] == NULL) | |
cc59ec59 MS |
7376 | (*addr_string)[i] = savestring (addr_start, |
7377 | (*address) - addr_start); | |
c906108c SS |
7378 | } |
7379 | } | |
c3f6f71d | 7380 | } |
c906108c | 7381 | |
c906108c | 7382 | |
c3f6f71d JM |
7383 | /* Convert each SAL into a real PC. Verify that the PC can be |
7384 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 7385 | |
b9362cc7 | 7386 | static void |
23e7acfb | 7387 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7388 | { |
7389 | int i; | |
cc59ec59 | 7390 | |
c3f6f71d | 7391 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7392 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7393 | } |
7394 | ||
7a697b8d SS |
7395 | /* Fast tracepoints may have restrictions on valid locations. For |
7396 | instance, a fast tracepoint using a jump instead of a trap will | |
7397 | likely have to overwrite more bytes than a trap would, and so can | |
7398 | only be placed where the instruction is longer than the jump, or a | |
7399 | multi-instruction sequence does not have a jump into the middle of | |
7400 | it, etc. */ | |
7401 | ||
7402 | static void | |
7403 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7404 | struct symtabs_and_lines *sals) | |
7405 | { | |
7406 | int i, rslt; | |
7407 | struct symtab_and_line *sal; | |
7408 | char *msg; | |
7409 | struct cleanup *old_chain; | |
7410 | ||
7411 | for (i = 0; i < sals->nelts; i++) | |
7412 | { | |
7413 | sal = &sals->sals[i]; | |
7414 | ||
7415 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7416 | NULL, &msg); | |
7417 | old_chain = make_cleanup (xfree, msg); | |
7418 | ||
7419 | if (!rslt) | |
7420 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7421 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7422 | ||
7423 | do_cleanups (old_chain); | |
7424 | } | |
7425 | } | |
7426 | ||
05ff989b | 7427 | static void |
0101ce28 JJ |
7428 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7429 | { | |
7430 | struct captured_parse_breakpoint_args *args = data; | |
7431 | ||
7432 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7433 | args->not_found_ptr); | |
0101ce28 JJ |
7434 | } |
7435 | ||
018d34a4 VP |
7436 | /* Given TOK, a string specification of condition and thread, as |
7437 | accepted by the 'break' command, extract the condition | |
7438 | string and thread number and set *COND_STRING and *THREAD. | |
7439 | PC identifies the context at which the condition should be parsed. | |
7440 | If no condition is found, *COND_STRING is set to NULL. | |
7441 | If no thread is found, *THREAD is set to -1. */ | |
7442 | static void | |
7443 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7444 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7445 | { |
7446 | *cond_string = NULL; | |
7447 | *thread = -1; | |
7448 | while (tok && *tok) | |
7449 | { | |
7450 | char *end_tok; | |
7451 | int toklen; | |
7452 | char *cond_start = NULL; | |
7453 | char *cond_end = NULL; | |
cc59ec59 | 7454 | |
018d34a4 VP |
7455 | while (*tok == ' ' || *tok == '\t') |
7456 | tok++; | |
7457 | ||
7458 | end_tok = tok; | |
7459 | ||
7460 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7461 | end_tok++; | |
7462 | ||
7463 | toklen = end_tok - tok; | |
7464 | ||
7465 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7466 | { | |
f7545552 TT |
7467 | struct expression *expr; |
7468 | ||
018d34a4 | 7469 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7470 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7471 | xfree (expr); | |
018d34a4 VP |
7472 | cond_end = tok; |
7473 | *cond_string = savestring (cond_start, | |
7474 | cond_end - cond_start); | |
7475 | } | |
7476 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7477 | { | |
7478 | char *tmptok; | |
7479 | ||
7480 | tok = end_tok + 1; | |
7481 | tmptok = tok; | |
7482 | *thread = strtol (tok, &tok, 0); | |
7483 | if (tok == tmptok) | |
7484 | error (_("Junk after thread keyword.")); | |
7485 | if (!valid_thread_id (*thread)) | |
7486 | error (_("Unknown thread %d."), *thread); | |
7487 | } | |
4a306c9a JB |
7488 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7489 | { | |
7490 | char *tmptok; | |
7491 | ||
7492 | tok = end_tok + 1; | |
7493 | tmptok = tok; | |
7494 | *task = strtol (tok, &tok, 0); | |
7495 | if (tok == tmptok) | |
7496 | error (_("Junk after task keyword.")); | |
7497 | if (!valid_task_id (*task)) | |
b6199126 | 7498 | error (_("Unknown task %d."), *task); |
4a306c9a | 7499 | } |
018d34a4 VP |
7500 | else |
7501 | error (_("Junk at end of arguments.")); | |
7502 | } | |
7503 | } | |
7504 | ||
0fb4aa4b PA |
7505 | /* Decode a static tracepoint marker spec. */ |
7506 | ||
7507 | static struct symtabs_and_lines | |
7508 | decode_static_tracepoint_spec (char **arg_p) | |
7509 | { | |
7510 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7511 | struct symtabs_and_lines sals; | |
7512 | struct symtab_and_line sal; | |
7513 | struct symbol *sym; | |
7514 | struct cleanup *old_chain; | |
7515 | char *p = &(*arg_p)[3]; | |
7516 | char *endp; | |
7517 | char *marker_str; | |
7518 | int i; | |
7519 | ||
7520 | while (*p == ' ' || *p == '\t') | |
7521 | p++; | |
7522 | ||
7523 | endp = p; | |
7524 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7525 | endp++; | |
7526 | ||
7527 | marker_str = savestring (p, endp - p); | |
7528 | old_chain = make_cleanup (xfree, marker_str); | |
7529 | ||
7530 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7531 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7532 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7533 | ||
7534 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7535 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7536 | ||
7537 | for (i = 0; i < sals.nelts; i++) | |
7538 | { | |
7539 | struct static_tracepoint_marker *marker; | |
7540 | ||
7541 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7542 | ||
7543 | init_sal (&sals.sals[i]); | |
7544 | ||
7545 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7546 | sals.sals[i].pc = marker->address; | |
7547 | ||
7548 | release_static_tracepoint_marker (marker); | |
7549 | } | |
7550 | ||
7551 | do_cleanups (old_chain); | |
7552 | ||
7553 | *arg_p = endp; | |
7554 | return sals; | |
7555 | } | |
7556 | ||
fd9b8c24 PA |
7557 | /* Set a breakpoint. This function is shared between CLI and MI |
7558 | functions for setting a breakpoint. This function has two major | |
7559 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7560 | parameter. If non-zero, the function will parse arg, extracting | |
7561 | breakpoint location, address and thread. Otherwise, ARG is just the | |
7562 | location of breakpoint, with condition and thread specified by the | |
84f4c1fe PM |
7563 | COND_STRING and THREAD parameters. If INTERNAL is non-zero, the |
7564 | breakpoint number will be allocated from the internal breakpoint | |
7565 | count. Returns true if any breakpoint was created; false | |
7566 | otherwise. */ | |
0101ce28 | 7567 | |
8cdf0e15 VP |
7568 | int |
7569 | create_breakpoint (struct gdbarch *gdbarch, | |
7570 | char *arg, char *cond_string, int thread, | |
7571 | int parse_condition_and_thread, | |
0fb4aa4b | 7572 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7573 | int ignore_count, |
7574 | enum auto_boolean pending_break_support, | |
7575 | struct breakpoint_ops *ops, | |
84f4c1fe | 7576 | int from_tty, int enabled, int internal) |
c3f6f71d | 7577 | { |
71fff37b | 7578 | struct gdb_exception e; |
c3f6f71d | 7579 | struct symtabs_and_lines sals; |
0101ce28 | 7580 | struct symtab_and_line pending_sal; |
0101ce28 | 7581 | char *copy_arg; |
c3f6f71d JM |
7582 | char *addr_start = arg; |
7583 | char **addr_string; | |
7584 | struct cleanup *old_chain; | |
80c99de1 | 7585 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7586 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7587 | int i; |
0101ce28 | 7588 | int pending = 0; |
0101ce28 | 7589 | int not_found = 0; |
4a306c9a | 7590 | int task = 0; |
86b17b60 | 7591 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7592 | |
c3f6f71d JM |
7593 | sals.sals = NULL; |
7594 | sals.nelts = 0; | |
7595 | addr_string = NULL; | |
c3f6f71d | 7596 | |
0101ce28 JJ |
7597 | parse_args.arg_p = &arg; |
7598 | parse_args.sals_p = &sals; | |
7599 | parse_args.addr_string_p = &addr_string; | |
7600 | parse_args.not_found_ptr = ¬_found; | |
7601 | ||
0fb4aa4b PA |
7602 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7603 | { | |
7604 | int i; | |
7605 | ||
7606 | sals = decode_static_tracepoint_spec (&arg); | |
7607 | ||
7608 | copy_arg = savestring (addr_start, arg - addr_start); | |
7609 | addr_string = xcalloc (sals.nelts, sizeof (char **)); | |
7610 | for (i = 0; i < sals.nelts; i++) | |
7611 | addr_string[i] = xstrdup (copy_arg); | |
7612 | goto done; | |
7613 | } | |
7614 | ||
05ff989b AC |
7615 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7616 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7617 | |
7618 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7619 | switch (e.reason) |
0101ce28 | 7620 | { |
05ff989b | 7621 | case RETURN_QUIT: |
98deb0da | 7622 | throw_exception (e); |
05ff989b AC |
7623 | case RETURN_ERROR: |
7624 | switch (e.error) | |
0101ce28 | 7625 | { |
05ff989b | 7626 | case NOT_FOUND_ERROR: |
0101ce28 | 7627 | |
05ff989b AC |
7628 | /* If pending breakpoint support is turned off, throw |
7629 | error. */ | |
fa8d40ab JJ |
7630 | |
7631 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7632 | throw_exception (e); |
7633 | ||
7634 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7635 | |
05ff989b AC |
7636 | /* If pending breakpoint support is auto query and the user |
7637 | selects no, then simply return the error code. */ | |
059fb39f | 7638 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
9bd89d67 | 7639 | && !nquery (_("Make breakpoint pending on future shared library load? "))) |
fd9b8c24 | 7640 | return 0; |
fa8d40ab | 7641 | |
05ff989b AC |
7642 | /* At this point, either the user was queried about setting |
7643 | a pending breakpoint and selected yes, or pending | |
7644 | breakpoint behavior is on and thus a pending breakpoint | |
7645 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7646 | copy_arg = xstrdup (addr_start); |
7647 | addr_string = ©_arg; | |
7648 | sals.nelts = 1; | |
7649 | sals.sals = &pending_sal; | |
7650 | pending_sal.pc = 0; | |
7651 | pending = 1; | |
05ff989b AC |
7652 | break; |
7653 | default: | |
98deb0da | 7654 | throw_exception (e); |
0101ce28 | 7655 | } |
05ff989b AC |
7656 | default: |
7657 | if (!sals.nelts) | |
fd9b8c24 | 7658 | return 0; |
0101ce28 | 7659 | } |
c3f6f71d | 7660 | |
0fb4aa4b PA |
7661 | done: |
7662 | ||
c3f6f71d JM |
7663 | /* Create a chain of things that always need to be cleaned up. */ |
7664 | old_chain = make_cleanup (null_cleanup, 0); | |
7665 | ||
0101ce28 JJ |
7666 | if (!pending) |
7667 | { | |
7668 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7669 | make_cleanup (xfree, sals.sals); | |
7670 | ||
7671 | /* Cleanup the addr_string array but not its contents. */ | |
7672 | make_cleanup (xfree, addr_string); | |
7673 | } | |
c3f6f71d | 7674 | |
c3f6f71d JM |
7675 | /* ----------------------------- SNIP ----------------------------- |
7676 | Anything added to the cleanup chain beyond this point is assumed | |
7677 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7678 | then the memory is not reclaimed. */ |
7679 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7680 | |
7681 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7682 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7683 | for (i = 0; i < sals.nelts; i++) |
7684 | { | |
7685 | if (addr_string[i] != NULL) | |
b8c9b27d | 7686 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7687 | } |
7688 | ||
7689 | /* Resolve all line numbers to PC's and verify that the addresses | |
7690 | are ok for the target. */ | |
0101ce28 | 7691 | if (!pending) |
23e7acfb | 7692 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7693 | |
7a697b8d SS |
7694 | /* Fast tracepoints may have additional restrictions on location. */ |
7695 | if (type_wanted == bp_fast_tracepoint) | |
7696 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7697 | ||
c3f6f71d JM |
7698 | /* Verify that condition can be parsed, before setting any |
7699 | breakpoints. Allocate a separate condition expression for each | |
7700 | breakpoint. */ | |
0101ce28 | 7701 | if (!pending) |
c3f6f71d | 7702 | { |
2f069f6f | 7703 | if (parse_condition_and_thread) |
72b2ff0e VP |
7704 | { |
7705 | /* Here we only parse 'arg' to separate condition | |
7706 | from thread number, so parsing in context of first | |
7707 | sal is OK. When setting the breakpoint we'll | |
7708 | re-parse it in context of each sal. */ | |
7709 | cond_string = NULL; | |
7710 | thread = -1; | |
4a306c9a JB |
7711 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7712 | &thread, &task); | |
72b2ff0e VP |
7713 | if (cond_string) |
7714 | make_cleanup (xfree, cond_string); | |
7715 | } | |
2f069f6f | 7716 | else |
72b2ff0e VP |
7717 | { |
7718 | /* Create a private copy of condition string. */ | |
7719 | if (cond_string) | |
7720 | { | |
7721 | cond_string = xstrdup (cond_string); | |
7722 | make_cleanup (xfree, cond_string); | |
7723 | } | |
7724 | } | |
0fb4aa4b PA |
7725 | |
7726 | /* If the user is creating a static tracepoint by marker id | |
7727 | (strace -m MARKER_ID), then store the sals index, so that | |
7728 | breakpoint_re_set can try to match up which of the newly | |
7729 | found markers corresponds to this one, and, don't try to | |
7730 | expand multiple locations for each sal, given than SALS | |
7731 | already should contain all sals for MARKER_ID. */ | |
7732 | if (type_wanted == bp_static_tracepoint | |
7733 | && is_marker_spec (addr_string[0])) | |
7734 | { | |
7735 | int i; | |
7736 | ||
7737 | for (i = 0; i < sals.nelts; ++i) | |
7738 | { | |
7739 | struct symtabs_and_lines expanded; | |
7740 | struct breakpoint *tp; | |
7741 | struct cleanup *old_chain; | |
7742 | ||
7743 | expanded.nelts = 1; | |
7744 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7745 | expanded.sals[0] = sals.sals[i]; | |
7746 | old_chain = make_cleanup (xfree, expanded.sals); | |
7747 | ||
7748 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], | |
7749 | cond_string, type_wanted, | |
7750 | tempflag ? disp_del : disp_donttouch, | |
7751 | thread, task, ignore_count, ops, | |
84f4c1fe | 7752 | from_tty, enabled, internal); |
0fb4aa4b PA |
7753 | |
7754 | do_cleanups (old_chain); | |
7755 | ||
7756 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
7757 | if (internal) |
7758 | tp = get_breakpoint (internal_breakpoint_number); | |
7759 | else | |
7760 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
7761 | gdb_assert (tp != NULL); |
7762 | ||
7763 | /* Given that its possible to have multiple markers with | |
7764 | the same string id, if the user is creating a static | |
7765 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7766 | store the sals index, so that breakpoint_re_set can | |
7767 | try to match up which of the newly found markers | |
7768 | corresponds to this one */ | |
7769 | tp->static_trace_marker_id_idx = i; | |
7770 | } | |
7771 | } | |
7772 | else | |
7773 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, | |
7774 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7775 | thread, task, ignore_count, ops, from_tty, | |
84f4c1fe | 7776 | enabled, internal); |
c906108c | 7777 | } |
0101ce28 JJ |
7778 | else |
7779 | { | |
0101ce28 JJ |
7780 | struct breakpoint *b; |
7781 | ||
0101ce28 JJ |
7782 | make_cleanup (xfree, copy_arg); |
7783 | ||
a6d9a66e | 7784 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 7785 | set_breakpoint_number (internal, b); |
72b2ff0e | 7786 | b->thread = -1; |
018d34a4 | 7787 | b->addr_string = addr_string[0]; |
72b2ff0e | 7788 | b->cond_string = NULL; |
0101ce28 | 7789 | b->ignore_count = ignore_count; |
0101ce28 | 7790 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7791 | b->condition_not_parsed = 1; |
604133b5 | 7792 | b->ops = ops; |
41447f92 | 7793 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7794 | b->pspace = current_program_space; |
84f4c1fe | 7795 | b->py_bp_object = NULL; |
74960c60 | 7796 | |
6c95b8df | 7797 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7798 | && (b->type == bp_breakpoint |
7799 | || b->type == bp_hardware_breakpoint)) | |
7800 | b->enable_state = bp_startup_disabled; | |
7801 | ||
84f4c1fe PM |
7802 | if (internal) |
7803 | /* Do not mention breakpoints with a negative number, | |
7804 | but do notify observers. */ | |
7805 | observer_notify_breakpoint_created (b->number); | |
7806 | else | |
7807 | mention (b); | |
0101ce28 JJ |
7808 | } |
7809 | ||
c3f6f71d | 7810 | if (sals.nelts > 1) |
95a42b64 TT |
7811 | { |
7812 | warning (_("Multiple breakpoints were set.\n" | |
7813 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7814 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7815 | } |
7816 | ||
80c99de1 PA |
7817 | /* That's it. Discard the cleanups for data inserted into the |
7818 | breakpoint. */ | |
7819 | discard_cleanups (bkpt_chain); | |
7820 | /* But cleanup everything else. */ | |
c3f6f71d | 7821 | do_cleanups (old_chain); |
217dc9e2 | 7822 | |
80c99de1 | 7823 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7824 | update_global_location_list (1); |
fd9b8c24 PA |
7825 | |
7826 | return 1; | |
c3f6f71d | 7827 | } |
c906108c | 7828 | |
72b2ff0e VP |
7829 | /* Set a breakpoint. |
7830 | ARG is a string describing breakpoint address, | |
7831 | condition, and thread. | |
7832 | FLAG specifies if a breakpoint is hardware on, | |
7833 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7834 | and BP_TEMPFLAG. */ | |
7835 | ||
98deb0da | 7836 | static void |
72b2ff0e | 7837 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7838 | { |
72b2ff0e | 7839 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7840 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7841 | ? bp_hardware_breakpoint | |
7842 | : bp_breakpoint); | |
c3f6f71d | 7843 | |
8cdf0e15 VP |
7844 | create_breakpoint (get_current_arch (), |
7845 | arg, | |
7846 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7847 | tempflag, type_wanted, |
8cdf0e15 VP |
7848 | 0 /* Ignore count */, |
7849 | pending_break_support, | |
7850 | NULL /* breakpoint_ops */, | |
7851 | from_tty, | |
84f4c1fe PM |
7852 | 1 /* enabled */, |
7853 | 0 /* internal */); | |
c906108c SS |
7854 | } |
7855 | ||
72b2ff0e | 7856 | |
c906108c SS |
7857 | /* Helper function for break_command_1 and disassemble_command. */ |
7858 | ||
7859 | void | |
fba45db2 | 7860 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7861 | { |
7862 | CORE_ADDR pc; | |
7863 | ||
7864 | if (sal->pc == 0 && sal->symtab != NULL) | |
7865 | { | |
7866 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7867 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7868 | sal->line, sal->symtab->filename); |
7869 | sal->pc = pc; | |
6a048695 JB |
7870 | |
7871 | /* If this SAL corresponds to a breakpoint inserted using | |
7872 | a line number, then skip the function prologue if necessary. */ | |
7873 | if (sal->explicit_line) | |
059acae7 | 7874 | skip_prologue_sal (sal); |
c906108c SS |
7875 | } |
7876 | ||
7877 | if (sal->section == 0 && sal->symtab != NULL) | |
7878 | { | |
7879 | struct blockvector *bv; | |
c5aa993b JM |
7880 | struct block *b; |
7881 | struct symbol *sym; | |
c906108c | 7882 | |
801e3a5b | 7883 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7884 | if (bv != NULL) |
7885 | { | |
7f0df278 | 7886 | sym = block_linkage_function (b); |
c906108c SS |
7887 | if (sym != NULL) |
7888 | { | |
7889 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7890 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7891 | } |
7892 | else | |
7893 | { | |
7894 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7895 | have to look harder. This case can be executed if we have |
7896 | line numbers but no functions (as can happen in assembly | |
7897 | source). */ | |
c906108c | 7898 | |
c5aa993b | 7899 | struct minimal_symbol *msym; |
6c95b8df PA |
7900 | struct cleanup *old_chain = save_current_space_and_thread (); |
7901 | ||
7902 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7903 | |
7904 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7905 | if (msym) | |
714835d5 | 7906 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7907 | |
7908 | do_cleanups (old_chain); | |
c906108c SS |
7909 | } |
7910 | } | |
7911 | } | |
7912 | } | |
7913 | ||
7914 | void | |
fba45db2 | 7915 | break_command (char *arg, int from_tty) |
c906108c | 7916 | { |
db107f19 | 7917 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7918 | } |
7919 | ||
c906108c | 7920 | void |
fba45db2 | 7921 | tbreak_command (char *arg, int from_tty) |
c906108c | 7922 | { |
db107f19 | 7923 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7924 | } |
7925 | ||
c906108c | 7926 | static void |
fba45db2 | 7927 | hbreak_command (char *arg, int from_tty) |
c906108c | 7928 | { |
db107f19 | 7929 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7930 | } |
7931 | ||
7932 | static void | |
fba45db2 | 7933 | thbreak_command (char *arg, int from_tty) |
c906108c | 7934 | { |
db107f19 | 7935 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7936 | } |
7937 | ||
7938 | static void | |
fba45db2 | 7939 | stop_command (char *arg, int from_tty) |
c906108c | 7940 | { |
a3f17187 | 7941 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7942 | Usage: stop in <function | address>\n\ |
a3f17187 | 7943 | stop at <line>\n")); |
c906108c SS |
7944 | } |
7945 | ||
7946 | static void | |
fba45db2 | 7947 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7948 | { |
7949 | int badInput = 0; | |
7950 | ||
c5aa993b | 7951 | if (arg == (char *) NULL) |
c906108c SS |
7952 | badInput = 1; |
7953 | else if (*arg != '*') | |
7954 | { | |
7955 | char *argptr = arg; | |
7956 | int hasColon = 0; | |
7957 | ||
53a5351d JM |
7958 | /* look for a ':'. If this is a line number specification, then |
7959 | say it is bad, otherwise, it should be an address or | |
7960 | function/method name */ | |
c906108c | 7961 | while (*argptr && !hasColon) |
c5aa993b JM |
7962 | { |
7963 | hasColon = (*argptr == ':'); | |
7964 | argptr++; | |
7965 | } | |
c906108c SS |
7966 | |
7967 | if (hasColon) | |
c5aa993b | 7968 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7969 | else |
c5aa993b | 7970 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7971 | } |
7972 | ||
7973 | if (badInput) | |
a3f17187 | 7974 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7975 | else |
db107f19 | 7976 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7977 | } |
7978 | ||
7979 | static void | |
fba45db2 | 7980 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7981 | { |
7982 | int badInput = 0; | |
7983 | ||
c5aa993b | 7984 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7985 | badInput = 1; |
7986 | else | |
7987 | { | |
7988 | char *argptr = arg; | |
7989 | int hasColon = 0; | |
7990 | ||
7991 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7992 | it is probably a line number. */ |
c906108c | 7993 | while (*argptr && !hasColon) |
c5aa993b JM |
7994 | { |
7995 | hasColon = (*argptr == ':'); | |
7996 | argptr++; | |
7997 | } | |
c906108c SS |
7998 | |
7999 | if (hasColon) | |
c5aa993b | 8000 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8001 | else |
c5aa993b | 8002 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8003 | } |
8004 | ||
8005 | if (badInput) | |
a3f17187 | 8006 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8007 | else |
db107f19 | 8008 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8009 | } |
8010 | ||
65d79d4b SDJ |
8011 | /* Return non-zero if EXP is verified as constant. Returned zero means EXP is |
8012 | variable. Also the constant detection may fail for some constant | |
8013 | expressions and in such case still falsely return zero. */ | |
8014 | static int | |
8015 | watchpoint_exp_is_const (const struct expression *exp) | |
8016 | { | |
8017 | int i = exp->nelts; | |
8018 | ||
8019 | while (i > 0) | |
8020 | { | |
8021 | int oplenp, argsp; | |
8022 | ||
8023 | /* We are only interested in the descriptor of each element. */ | |
8024 | operator_length (exp, i, &oplenp, &argsp); | |
8025 | i -= oplenp; | |
8026 | ||
8027 | switch (exp->elts[i].opcode) | |
8028 | { | |
8029 | case BINOP_ADD: | |
8030 | case BINOP_SUB: | |
8031 | case BINOP_MUL: | |
8032 | case BINOP_DIV: | |
8033 | case BINOP_REM: | |
8034 | case BINOP_MOD: | |
8035 | case BINOP_LSH: | |
8036 | case BINOP_RSH: | |
8037 | case BINOP_LOGICAL_AND: | |
8038 | case BINOP_LOGICAL_OR: | |
8039 | case BINOP_BITWISE_AND: | |
8040 | case BINOP_BITWISE_IOR: | |
8041 | case BINOP_BITWISE_XOR: | |
8042 | case BINOP_EQUAL: | |
8043 | case BINOP_NOTEQUAL: | |
8044 | case BINOP_LESS: | |
8045 | case BINOP_GTR: | |
8046 | case BINOP_LEQ: | |
8047 | case BINOP_GEQ: | |
8048 | case BINOP_REPEAT: | |
8049 | case BINOP_COMMA: | |
8050 | case BINOP_EXP: | |
8051 | case BINOP_MIN: | |
8052 | case BINOP_MAX: | |
8053 | case BINOP_INTDIV: | |
8054 | case BINOP_CONCAT: | |
8055 | case BINOP_IN: | |
8056 | case BINOP_RANGE: | |
8057 | case TERNOP_COND: | |
8058 | case TERNOP_SLICE: | |
8059 | case TERNOP_SLICE_COUNT: | |
8060 | ||
8061 | case OP_LONG: | |
8062 | case OP_DOUBLE: | |
8063 | case OP_DECFLOAT: | |
8064 | case OP_LAST: | |
8065 | case OP_COMPLEX: | |
8066 | case OP_STRING: | |
8067 | case OP_BITSTRING: | |
8068 | case OP_ARRAY: | |
8069 | case OP_TYPE: | |
8070 | case OP_NAME: | |
8071 | case OP_OBJC_NSSTRING: | |
8072 | ||
8073 | case UNOP_NEG: | |
8074 | case UNOP_LOGICAL_NOT: | |
8075 | case UNOP_COMPLEMENT: | |
8076 | case UNOP_ADDR: | |
8077 | case UNOP_HIGH: | |
8078 | /* Unary, binary and ternary operators: We have to check their | |
8079 | operands. If they are constant, then so is the result of | |
8080 | that operation. For instance, if A and B are determined to be | |
8081 | constants, then so is "A + B". | |
8082 | ||
8083 | UNOP_IND is one exception to the rule above, because the value | |
8084 | of *ADDR is not necessarily a constant, even when ADDR is. */ | |
8085 | break; | |
8086 | ||
8087 | case OP_VAR_VALUE: | |
8088 | /* Check whether the associated symbol is a constant. | |
8089 | We use SYMBOL_CLASS rather than TYPE_CONST because it's | |
8090 | possible that a buggy compiler could mark a variable as constant | |
8091 | even when it is not, and TYPE_CONST would return true in this | |
8092 | case, while SYMBOL_CLASS wouldn't. | |
8093 | We also have to check for function symbols because they are | |
8094 | always constant. */ | |
8095 | { | |
8096 | struct symbol *s = exp->elts[i + 2].symbol; | |
8097 | ||
8098 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8099 | && SYMBOL_CLASS (s) != LOC_CONST | |
8100 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8101 | return 0; | |
8102 | break; | |
8103 | } | |
8104 | ||
8105 | /* The default action is to return 0 because we are using | |
8106 | the optimistic approach here: If we don't know something, | |
8107 | then it is not a constant. */ | |
8108 | default: | |
8109 | return 0; | |
8110 | } | |
8111 | } | |
8112 | ||
8113 | return 1; | |
8114 | } | |
8115 | ||
53a5351d JM |
8116 | /* accessflag: hw_write: watch write, |
8117 | hw_read: watch read, | |
8118 | hw_access: watch access (read or write) */ | |
c906108c | 8119 | static void |
84f4c1fe PM |
8120 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8121 | int just_location, int internal) | |
c906108c | 8122 | { |
d983da9c | 8123 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8124 | struct expression *exp; |
60e1c644 | 8125 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8126 | struct value *val, *mark, *result; |
c906108c | 8127 | struct frame_info *frame; |
c906108c SS |
8128 | char *exp_start = NULL; |
8129 | char *exp_end = NULL; | |
37e4754d | 8130 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8131 | int toklen; |
8132 | char *cond_start = NULL; | |
8133 | char *cond_end = NULL; | |
c906108c SS |
8134 | int i, other_type_used, target_resources_ok = 0; |
8135 | enum bptype bp_type; | |
8136 | int mem_cnt = 0; | |
37e4754d | 8137 | int thread = -1; |
0cf6dd15 | 8138 | int pc = 0; |
c906108c | 8139 | |
37e4754d LM |
8140 | /* Make sure that we actually have parameters to parse. */ |
8141 | if (arg != NULL && arg[0] != '\0') | |
8142 | { | |
8143 | toklen = strlen (arg); /* Size of argument list. */ | |
8144 | ||
8145 | /* Points tok to the end of the argument list. */ | |
8146 | tok = arg + toklen - 1; | |
8147 | ||
8148 | /* Go backwards in the parameters list. Skip the last parameter. | |
8149 | If we're expecting a 'thread <thread_num>' parameter, this should | |
8150 | be the thread identifier. */ | |
8151 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
8152 | tok--; | |
8153 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8154 | tok--; | |
8155 | ||
8156 | /* Points end_tok to the beginning of the last token. */ | |
8157 | id_tok_start = tok + 1; | |
8158 | ||
8159 | /* Go backwards in the parameters list. Skip one more parameter. | |
8160 | If we're expecting a 'thread <thread_num>' parameter, we should | |
8161 | reach a "thread" token. */ | |
8162 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
8163 | tok--; | |
8164 | ||
8165 | end_tok = tok; | |
8166 | ||
8167 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8168 | tok--; | |
8169 | ||
8170 | /* Move the pointer forward to skip the whitespace and | |
8171 | calculate the length of the token. */ | |
8172 | tok++; | |
8173 | toklen = end_tok - tok; | |
8174 | ||
8175 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8176 | { | |
8177 | /* At this point we've found a "thread" token, which means | |
8178 | the user is trying to set a watchpoint that triggers | |
8179 | only in a specific thread. */ | |
8180 | char *endp; | |
8181 | ||
8182 | /* Extract the thread ID from the next token. */ | |
8183 | thread = strtol (id_tok_start, &endp, 0); | |
8184 | ||
8185 | /* Check if the user provided a valid numeric value for the | |
8186 | thread ID. */ | |
8187 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8188 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8189 | ||
8190 | /* Check if the thread actually exists. */ | |
8191 | if (!valid_thread_id (thread)) | |
8192 | error (_("Unknown thread %d."), thread); | |
8193 | ||
8194 | /* Truncate the string and get rid of the thread <thread_num> | |
8195 | parameter before the parameter list is parsed by the | |
8196 | evaluate_expression() function. */ | |
8197 | *tok = '\0'; | |
8198 | } | |
8199 | } | |
8200 | ||
8201 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8202 | innermost_block = NULL; |
8203 | exp_start = arg; | |
8204 | exp = parse_exp_1 (&arg, 0, 0); | |
8205 | exp_end = arg; | |
fa8a61dc TT |
8206 | /* Remove trailing whitespace from the expression before saving it. |
8207 | This makes the eventual display of the expression string a bit | |
8208 | prettier. */ | |
8209 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8210 | --exp_end; | |
8211 | ||
65d79d4b SDJ |
8212 | /* Checking if the expression is not constant. */ |
8213 | if (watchpoint_exp_is_const (exp)) | |
8214 | { | |
8215 | int len; | |
8216 | ||
8217 | len = exp_end - exp_start; | |
8218 | while (len > 0 && isspace (exp_start[len - 1])) | |
8219 | len--; | |
8220 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8221 | } | |
8222 | ||
c906108c SS |
8223 | exp_valid_block = innermost_block; |
8224 | mark = value_mark (); | |
a1442452 | 8225 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8226 | |
8227 | if (just_location) | |
8228 | { | |
8229 | exp_valid_block = NULL; | |
a1442452 | 8230 | val = value_addr (result); |
06a64a0b TT |
8231 | release_value (val); |
8232 | value_free_to_mark (mark); | |
8233 | } | |
8234 | else if (val != NULL) | |
fa4727a6 | 8235 | release_value (val); |
c906108c SS |
8236 | |
8237 | tok = arg; | |
8238 | while (*tok == ' ' || *tok == '\t') | |
8239 | tok++; | |
8240 | end_tok = tok; | |
8241 | ||
8242 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
8243 | end_tok++; | |
8244 | ||
8245 | toklen = end_tok - tok; | |
8246 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8247 | { | |
2d134ed3 PA |
8248 | struct expression *cond; |
8249 | ||
60e1c644 | 8250 | innermost_block = NULL; |
c906108c SS |
8251 | tok = cond_start = end_tok + 1; |
8252 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8253 | |
8254 | /* The watchpoint expression may not be local, but the condition | |
8255 | may still be. E.g.: `watch global if local > 0'. */ | |
8256 | cond_exp_valid_block = innermost_block; | |
8257 | ||
2d134ed3 | 8258 | xfree (cond); |
c906108c SS |
8259 | cond_end = tok; |
8260 | } | |
8261 | if (*tok) | |
8a3fe4f8 | 8262 | error (_("Junk at end of command.")); |
c906108c | 8263 | |
53a5351d | 8264 | if (accessflag == hw_read) |
c5aa993b | 8265 | bp_type = bp_read_watchpoint; |
53a5351d | 8266 | else if (accessflag == hw_access) |
c5aa993b JM |
8267 | bp_type = bp_access_watchpoint; |
8268 | else | |
8269 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
8270 | |
8271 | mem_cnt = can_use_hardware_watchpoint (val); | |
8272 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8273 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
8274 | if (mem_cnt != 0) |
8275 | { | |
8276 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8277 | target_resources_ok = |
d92524f1 | 8278 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 8279 | other_type_used); |
c5aa993b | 8280 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8281 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8282 | |
c5aa993b | 8283 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8284 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 8285 | } |
c906108c | 8286 | |
4d28f7a8 KB |
8287 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
8288 | watchpoint could not be set. */ | |
8289 | if (!mem_cnt || target_resources_ok <= 0) | |
8290 | bp_type = bp_watchpoint; | |
8291 | ||
d983da9c | 8292 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8293 | |
8294 | /* If the expression is "local", then set up a "watchpoint scope" | |
8295 | breakpoint at the point where we've left the scope of the watchpoint | |
8296 | expression. Create the scope breakpoint before the watchpoint, so | |
8297 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8298 | if (exp_valid_block && frame) |
d983da9c | 8299 | { |
edb3359d DJ |
8300 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8301 | { | |
8302 | scope_breakpoint | |
a6d9a66e UW |
8303 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8304 | frame_unwind_caller_pc (frame), | |
edb3359d | 8305 | bp_watchpoint_scope); |
d983da9c | 8306 | |
edb3359d | 8307 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8308 | |
edb3359d DJ |
8309 | /* Automatically delete the breakpoint when it hits. */ |
8310 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8311 | |
edb3359d DJ |
8312 | /* Only break in the proper frame (help with recursion). */ |
8313 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8314 | |
edb3359d | 8315 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8316 | scope_breakpoint->loc->gdbarch |
8317 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8318 | scope_breakpoint->loc->requested_address |
8319 | = frame_unwind_caller_pc (frame); | |
8320 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8321 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8322 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8323 | scope_breakpoint->type); |
8324 | } | |
d983da9c DJ |
8325 | } |
8326 | ||
c906108c | 8327 | /* Now set up the breakpoint. */ |
2d134ed3 | 8328 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 8329 | set_breakpoint_number (internal, b); |
37e4754d | 8330 | b->thread = thread; |
b5de0fa7 | 8331 | b->disposition = disp_donttouch; |
c906108c SS |
8332 | b->exp = exp; |
8333 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8334 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8335 | if (just_location) |
8336 | { | |
8337 | struct type *t = value_type (val); | |
8338 | CORE_ADDR addr = value_as_address (val); | |
8339 | char *name; | |
8340 | ||
8341 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8342 | name = type_to_string (t); | |
8343 | ||
d63d0675 JK |
8344 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8345 | core_addr_to_string (addr)); | |
06a64a0b TT |
8346 | xfree (name); |
8347 | ||
d63d0675 JK |
8348 | b->exp_string = xstrprintf ("-location: %.*s", |
8349 | (int) (exp_end - exp_start), exp_start); | |
8350 | ||
06a64a0b TT |
8351 | /* The above expression is in C. */ |
8352 | b->language = language_c; | |
8353 | } | |
8354 | else | |
8355 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 8356 | b->val = val; |
fa4727a6 | 8357 | b->val_valid = 1; |
c906108c SS |
8358 | if (cond_start) |
8359 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8360 | else | |
8361 | b->cond_string = 0; | |
c5aa993b | 8362 | |
c906108c | 8363 | if (frame) |
f6bc2008 PA |
8364 | { |
8365 | b->watchpoint_frame = get_frame_id (frame); | |
8366 | b->watchpoint_thread = inferior_ptid; | |
8367 | } | |
c906108c | 8368 | else |
f6bc2008 PA |
8369 | { |
8370 | b->watchpoint_frame = null_frame_id; | |
8371 | b->watchpoint_thread = null_ptid; | |
8372 | } | |
c906108c | 8373 | |
d983da9c | 8374 | if (scope_breakpoint != NULL) |
c906108c | 8375 | { |
d983da9c DJ |
8376 | /* The scope breakpoint is related to the watchpoint. We will |
8377 | need to act on them together. */ | |
8378 | b->related_breakpoint = scope_breakpoint; | |
8379 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8380 | } |
d983da9c | 8381 | |
06a64a0b TT |
8382 | if (!just_location) |
8383 | value_free_to_mark (mark); | |
2d134ed3 PA |
8384 | |
8385 | /* Finally update the new watchpoint. This creates the locations | |
8386 | that should be inserted. */ | |
8387 | update_watchpoint (b, 1); | |
84f4c1fe PM |
8388 | if (internal) |
8389 | /* Do not mention breakpoints with a negative number, but do | |
8390 | notify observers. */ | |
8391 | observer_notify_breakpoint_created (b->number); | |
8392 | else | |
8393 | mention (b); | |
b60e7edf | 8394 | update_global_location_list (1); |
c906108c SS |
8395 | } |
8396 | ||
8397 | /* Return count of locations need to be watched and can be handled | |
8398 | in hardware. If the watchpoint can not be handled | |
8399 | in hardware return zero. */ | |
8400 | ||
c906108c | 8401 | static int |
fba45db2 | 8402 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
8403 | { |
8404 | int found_memory_cnt = 0; | |
2e70b7b9 | 8405 | struct value *head = v; |
c906108c SS |
8406 | |
8407 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8408 | if (!can_use_hw_watchpoints) |
c906108c | 8409 | return 0; |
c5aa993b | 8410 | |
5c44784c JM |
8411 | /* Make sure that the value of the expression depends only upon |
8412 | memory contents, and values computed from them within GDB. If we | |
8413 | find any register references or function calls, we can't use a | |
8414 | hardware watchpoint. | |
8415 | ||
8416 | The idea here is that evaluating an expression generates a series | |
8417 | of values, one holding the value of every subexpression. (The | |
8418 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8419 | a*b+c.) GDB's values hold almost enough information to establish | |
8420 | the criteria given above --- they identify memory lvalues, | |
8421 | register lvalues, computed values, etcetera. So we can evaluate | |
8422 | the expression, and then scan the chain of values that leaves | |
8423 | behind to decide whether we can detect any possible change to the | |
8424 | expression's final value using only hardware watchpoints. | |
8425 | ||
8426 | However, I don't think that the values returned by inferior | |
8427 | function calls are special in any way. So this function may not | |
8428 | notice that an expression involving an inferior function call | |
8429 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8430 | for (; v; v = value_next (v)) |
c906108c | 8431 | { |
5c44784c | 8432 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8433 | { |
8464be76 DJ |
8434 | if (v != head && value_lazy (v)) |
8435 | /* A lazy memory lvalue in the chain is one that GDB never | |
8436 | needed to fetch; we either just used its address (e.g., | |
8437 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
8438 | in `a,b'). This doesn't apply to HEAD; if that is | |
8439 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 8440 | ; |
53a5351d | 8441 | else |
5c44784c JM |
8442 | { |
8443 | /* Ahh, memory we actually used! Check if we can cover | |
8444 | it with hardware watchpoints. */ | |
df407dfe | 8445 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8446 | |
8447 | /* We only watch structs and arrays if user asked for it | |
8448 | explicitly, never if they just happen to appear in a | |
8449 | middle of some value chain. */ | |
8450 | if (v == head | |
8451 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8452 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8453 | { | |
42ae5230 | 8454 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 8455 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 8456 | |
d92524f1 | 8457 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
8458 | return 0; |
8459 | else | |
8460 | found_memory_cnt++; | |
8461 | } | |
5c44784c | 8462 | } |
c5aa993b | 8463 | } |
5086187c AC |
8464 | else if (VALUE_LVAL (v) != not_lval |
8465 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 8466 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 8467 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 8468 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
8469 | } |
8470 | ||
8471 | /* The expression itself looks suitable for using a hardware | |
8472 | watchpoint, but give the target machine a chance to reject it. */ | |
8473 | return found_memory_cnt; | |
8474 | } | |
8475 | ||
8b93c638 | 8476 | void |
84f4c1fe | 8477 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8478 | { |
84f4c1fe | 8479 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
8480 | } |
8481 | ||
8482 | /* A helper function that looks for an argument at the start of a | |
8483 | string. The argument must also either be at the end of the string, | |
8484 | or be followed by whitespace. Returns 1 if it finds the argument, | |
8485 | 0 otherwise. If the argument is found, it updates *STR. */ | |
8486 | ||
8487 | static int | |
8488 | check_for_argument (char **str, char *arg, int arg_len) | |
8489 | { | |
8490 | if (strncmp (*str, arg, arg_len) == 0 | |
8491 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
8492 | { | |
8493 | *str += arg_len; | |
8494 | return 1; | |
8495 | } | |
8496 | return 0; | |
8497 | } | |
8498 | ||
8499 | /* A helper function that looks for the "-location" argument and then | |
8500 | calls watch_command_1. */ | |
8501 | ||
8502 | static void | |
8503 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
8504 | { | |
8505 | int just_location = 0; | |
8506 | ||
8507 | if (arg | |
8508 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
8509 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
8510 | { | |
8511 | ep_skip_leading_whitespace (&arg); | |
8512 | just_location = 1; | |
8513 | } | |
8514 | ||
84f4c1fe | 8515 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 8516 | } |
8926118c | 8517 | |
c5aa993b | 8518 | static void |
fba45db2 | 8519 | watch_command (char *arg, int from_tty) |
c906108c | 8520 | { |
06a64a0b | 8521 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
8522 | } |
8523 | ||
8b93c638 | 8524 | void |
84f4c1fe | 8525 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8526 | { |
84f4c1fe | 8527 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 8528 | } |
8926118c | 8529 | |
c5aa993b | 8530 | static void |
fba45db2 | 8531 | rwatch_command (char *arg, int from_tty) |
c906108c | 8532 | { |
06a64a0b | 8533 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
8534 | } |
8535 | ||
8b93c638 | 8536 | void |
84f4c1fe | 8537 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8538 | { |
84f4c1fe | 8539 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 8540 | } |
8926118c | 8541 | |
c5aa993b | 8542 | static void |
fba45db2 | 8543 | awatch_command (char *arg, int from_tty) |
c906108c | 8544 | { |
06a64a0b | 8545 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 8546 | } |
c906108c | 8547 | \f |
c5aa993b | 8548 | |
43ff13b4 | 8549 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8550 | because it uses the mechanisms of breakpoints. */ |
8551 | ||
bfec99b2 PA |
8552 | struct until_break_command_continuation_args |
8553 | { | |
8554 | struct breakpoint *breakpoint; | |
8555 | struct breakpoint *breakpoint2; | |
186c406b | 8556 | int thread_num; |
bfec99b2 PA |
8557 | }; |
8558 | ||
43ff13b4 JM |
8559 | /* This function is called by fetch_inferior_event via the |
8560 | cmd_continuation pointer, to complete the until command. It takes | |
8561 | care of cleaning up the temporary breakpoints set up by the until | |
8562 | command. */ | |
c2c6d25f | 8563 | static void |
604ead4a | 8564 | until_break_command_continuation (void *arg) |
43ff13b4 | 8565 | { |
bfec99b2 PA |
8566 | struct until_break_command_continuation_args *a = arg; |
8567 | ||
8568 | delete_breakpoint (a->breakpoint); | |
8569 | if (a->breakpoint2) | |
8570 | delete_breakpoint (a->breakpoint2); | |
186c406b | 8571 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
8572 | } |
8573 | ||
c906108c | 8574 | void |
ae66c1fc | 8575 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8576 | { |
8577 | struct symtabs_and_lines sals; | |
8578 | struct symtab_and_line sal; | |
206415a3 | 8579 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8580 | struct breakpoint *breakpoint; |
f107f563 | 8581 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 8582 | struct cleanup *old_chain; |
186c406b TT |
8583 | int thread; |
8584 | struct thread_info *tp; | |
c906108c SS |
8585 | |
8586 | clear_proceed_status (); | |
8587 | ||
8588 | /* Set a breakpoint where the user wants it and at return from | |
8589 | this function */ | |
c5aa993b | 8590 | |
c906108c SS |
8591 | if (default_breakpoint_valid) |
8592 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8593 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8594 | else |
53a5351d | 8595 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8596 | 0, (char ***) NULL, NULL); |
c5aa993b | 8597 | |
c906108c | 8598 | if (sals.nelts != 1) |
8a3fe4f8 | 8599 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8600 | |
c906108c | 8601 | sal = sals.sals[0]; |
b8c9b27d | 8602 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 8603 | |
c906108c | 8604 | if (*arg) |
8a3fe4f8 | 8605 | error (_("Junk at end of arguments.")); |
c5aa993b | 8606 | |
c906108c | 8607 | resolve_sal_pc (&sal); |
c5aa993b | 8608 | |
ae66c1fc EZ |
8609 | if (anywhere) |
8610 | /* If the user told us to continue until a specified location, | |
8611 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8612 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8613 | null_frame_id, bp_until); | |
ae66c1fc | 8614 | else |
edb3359d | 8615 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 8616 | at the very same frame. */ |
a6d9a66e UW |
8617 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8618 | get_stack_frame_id (frame), | |
ae66c1fc | 8619 | bp_until); |
c5aa993b | 8620 | |
f107f563 | 8621 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8622 | |
186c406b TT |
8623 | tp = inferior_thread (); |
8624 | thread = tp->num; | |
8625 | ||
ae66c1fc EZ |
8626 | /* Keep within the current frame, or in frames called by the current |
8627 | one. */ | |
edb3359d DJ |
8628 | |
8629 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8630 | { |
edb3359d DJ |
8631 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8632 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8633 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8634 | sal, | |
edb3359d | 8635 | frame_unwind_caller_id (frame), |
f107f563 VP |
8636 | bp_until); |
8637 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
8638 | |
8639 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
8640 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 8641 | } |
c5aa993b | 8642 | |
c906108c | 8643 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
8644 | |
8645 | /* If we are running asynchronously, and proceed call above has actually | |
8646 | managed to start the target, arrange for breakpoints to be | |
8647 | deleted when the target stops. Otherwise, we're already stopped and | |
8648 | delete breakpoints via cleanup chain. */ | |
8649 | ||
8ea051c5 | 8650 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8651 | { |
bfec99b2 PA |
8652 | struct until_break_command_continuation_args *args; |
8653 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8654 | |
bfec99b2 PA |
8655 | args->breakpoint = breakpoint; |
8656 | args->breakpoint2 = breakpoint2; | |
186c406b | 8657 | args->thread_num = thread; |
f107f563 VP |
8658 | |
8659 | discard_cleanups (old_chain); | |
95e54da7 PA |
8660 | add_continuation (inferior_thread (), |
8661 | until_break_command_continuation, args, | |
604ead4a | 8662 | xfree); |
f107f563 VP |
8663 | } |
8664 | else | |
c5aa993b | 8665 | do_cleanups (old_chain); |
c906108c | 8666 | } |
ae66c1fc | 8667 | |
c906108c | 8668 | static void |
fba45db2 | 8669 | ep_skip_leading_whitespace (char **s) |
c906108c | 8670 | { |
c5aa993b JM |
8671 | if ((s == NULL) || (*s == NULL)) |
8672 | return; | |
8673 | while (isspace (**s)) | |
8674 | *s += 1; | |
c906108c | 8675 | } |
c5aa993b | 8676 | |
c906108c SS |
8677 | /* This function attempts to parse an optional "if <cond>" clause |
8678 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8679 | |
c906108c SS |
8680 | Else, it returns a pointer to the condition string. (It does not |
8681 | attempt to evaluate the string against a particular block.) And, | |
8682 | it updates arg to point to the first character following the parsed | |
8683 | if clause in the arg string. */ | |
53a5351d | 8684 | |
c906108c | 8685 | static char * |
fba45db2 | 8686 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8687 | { |
c5aa993b JM |
8688 | char *cond_string; |
8689 | ||
8690 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8691 | return NULL; |
c5aa993b | 8692 | |
c906108c SS |
8693 | /* Skip the "if" keyword. */ |
8694 | (*arg) += 2; | |
c5aa993b | 8695 | |
c906108c SS |
8696 | /* Skip any extra leading whitespace, and record the start of the |
8697 | condition string. */ | |
8698 | ep_skip_leading_whitespace (arg); | |
8699 | cond_string = *arg; | |
c5aa993b | 8700 | |
c906108c SS |
8701 | /* Assume that the condition occupies the remainder of the arg string. */ |
8702 | (*arg) += strlen (cond_string); | |
c5aa993b | 8703 | |
c906108c SS |
8704 | return cond_string; |
8705 | } | |
c5aa993b | 8706 | |
c906108c SS |
8707 | /* Commands to deal with catching events, such as signals, exceptions, |
8708 | process start/exit, etc. */ | |
c5aa993b JM |
8709 | |
8710 | typedef enum | |
8711 | { | |
44feb3ce TT |
8712 | catch_fork_temporary, catch_vfork_temporary, |
8713 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8714 | } |
8715 | catch_fork_kind; | |
8716 | ||
c906108c | 8717 | static void |
cc59ec59 MS |
8718 | catch_fork_command_1 (char *arg, int from_tty, |
8719 | struct cmd_list_element *command) | |
c906108c | 8720 | { |
a6d9a66e | 8721 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8722 | char *cond_string = NULL; |
44feb3ce TT |
8723 | catch_fork_kind fork_kind; |
8724 | int tempflag; | |
8725 | ||
8726 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8727 | tempflag = (fork_kind == catch_fork_temporary | |
8728 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8729 | |
44feb3ce TT |
8730 | if (!arg) |
8731 | arg = ""; | |
c906108c | 8732 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8733 | |
c906108c | 8734 | /* The allowed syntax is: |
c5aa993b JM |
8735 | catch [v]fork |
8736 | catch [v]fork if <cond> | |
8737 | ||
c906108c SS |
8738 | First, check if there's an if clause. */ |
8739 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 8740 | |
c906108c | 8741 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8742 | error (_("Junk at end of arguments.")); |
c5aa993b | 8743 | |
c906108c SS |
8744 | /* If this target supports it, create a fork or vfork catchpoint |
8745 | and enable reporting of such events. */ | |
c5aa993b JM |
8746 | switch (fork_kind) |
8747 | { | |
44feb3ce TT |
8748 | case catch_fork_temporary: |
8749 | case catch_fork_permanent: | |
a6d9a66e | 8750 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8751 | &catch_fork_breakpoint_ops); |
c906108c | 8752 | break; |
44feb3ce TT |
8753 | case catch_vfork_temporary: |
8754 | case catch_vfork_permanent: | |
a6d9a66e | 8755 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8756 | &catch_vfork_breakpoint_ops); |
c906108c | 8757 | break; |
c5aa993b | 8758 | default: |
8a3fe4f8 | 8759 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8760 | break; |
c5aa993b | 8761 | } |
c906108c SS |
8762 | } |
8763 | ||
8764 | static void | |
cc59ec59 MS |
8765 | catch_exec_command_1 (char *arg, int from_tty, |
8766 | struct cmd_list_element *command) | |
c906108c | 8767 | { |
a6d9a66e | 8768 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8769 | int tempflag; |
c5aa993b | 8770 | char *cond_string = NULL; |
c906108c | 8771 | |
44feb3ce TT |
8772 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8773 | ||
8774 | if (!arg) | |
8775 | arg = ""; | |
c906108c SS |
8776 | ep_skip_leading_whitespace (&arg); |
8777 | ||
8778 | /* The allowed syntax is: | |
c5aa993b JM |
8779 | catch exec |
8780 | catch exec if <cond> | |
c906108c SS |
8781 | |
8782 | First, check if there's an if clause. */ | |
8783 | cond_string = ep_parse_optional_if_clause (&arg); | |
8784 | ||
8785 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8786 | error (_("Junk at end of arguments.")); |
c906108c SS |
8787 | |
8788 | /* If this target supports it, create an exec catchpoint | |
8789 | and enable reporting of such events. */ | |
a6d9a66e UW |
8790 | create_catchpoint (gdbarch, tempflag, cond_string, |
8791 | &catch_exec_breakpoint_ops); | |
c906108c | 8792 | } |
c5aa993b | 8793 | |
3086aeae DJ |
8794 | static enum print_stop_action |
8795 | print_exception_catchpoint (struct breakpoint *b) | |
8796 | { | |
ade92717 | 8797 | int bp_temp, bp_throw; |
3086aeae | 8798 | |
ade92717 | 8799 | annotate_catchpoint (b->number); |
3086aeae | 8800 | |
ade92717 AR |
8801 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8802 | if (b->loc->address != b->loc->requested_address) | |
8803 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8804 | b->loc->address, | |
8805 | b->number, 1); | |
df2b6d2d | 8806 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8807 | ui_out_text (uiout, |
8808 | bp_temp ? "Temporary catchpoint " | |
8809 | : "Catchpoint "); | |
8810 | if (!ui_out_is_mi_like_p (uiout)) | |
8811 | ui_out_field_int (uiout, "bkptno", b->number); | |
8812 | ui_out_text (uiout, | |
c0b37c48 AR |
8813 | bp_throw ? " (exception thrown), " |
8814 | : " (exception caught), "); | |
ade92717 AR |
8815 | if (ui_out_is_mi_like_p (uiout)) |
8816 | { | |
8817 | ui_out_field_string (uiout, "reason", | |
8818 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8819 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8820 | ui_out_field_int (uiout, "bkptno", b->number); | |
8821 | } | |
3086aeae DJ |
8822 | return PRINT_SRC_AND_LOC; |
8823 | } | |
8824 | ||
8825 | static void | |
cc59ec59 MS |
8826 | print_one_exception_catchpoint (struct breakpoint *b, |
8827 | struct bp_location **last_loc) | |
3086aeae | 8828 | { |
79a45b7d | 8829 | struct value_print_options opts; |
cc59ec59 | 8830 | |
79a45b7d TT |
8831 | get_user_print_options (&opts); |
8832 | if (opts.addressprint) | |
3086aeae DJ |
8833 | { |
8834 | annotate_field (4); | |
604133b5 AR |
8835 | if (b->loc == NULL || b->loc->shlib_disabled) |
8836 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8837 | else | |
5af949e3 UW |
8838 | ui_out_field_core_addr (uiout, "addr", |
8839 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8840 | } |
8841 | annotate_field (5); | |
604133b5 | 8842 | if (b->loc) |
a6d9a66e | 8843 | *last_loc = b->loc; |
3086aeae DJ |
8844 | if (strstr (b->addr_string, "throw") != NULL) |
8845 | ui_out_field_string (uiout, "what", "exception throw"); | |
8846 | else | |
8847 | ui_out_field_string (uiout, "what", "exception catch"); | |
8848 | } | |
8849 | ||
8850 | static void | |
8851 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8852 | { | |
ade92717 AR |
8853 | int bp_temp; |
8854 | int bp_throw; | |
8855 | ||
df2b6d2d | 8856 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8857 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8858 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8859 | : _("Catchpoint ")); | |
8860 | ui_out_field_int (uiout, "bkptno", b->number); | |
8861 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8862 | : _(" (catch)")); | |
3086aeae DJ |
8863 | } |
8864 | ||
6149aea9 PA |
8865 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8866 | catch catchpoints. */ | |
8867 | ||
8868 | static void | |
8869 | print_recreate_exception_catchpoint (struct breakpoint *b, struct ui_file *fp) | |
8870 | { | |
8871 | int bp_temp; | |
8872 | int bp_throw; | |
8873 | ||
8874 | bp_temp = b->disposition == disp_del; | |
8875 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8876 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8877 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8878 | } | |
8879 | ||
3086aeae | 8880 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8881 | NULL, /* insert */ |
8882 | NULL, /* remove */ | |
8883 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8884 | print_exception_catchpoint, |
8885 | print_one_exception_catchpoint, | |
6149aea9 PA |
8886 | print_mention_exception_catchpoint, |
8887 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8888 | }; |
8889 | ||
8890 | static int | |
8891 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8892 | enum exception_event_kind ex_event, int from_tty) | |
8893 | { | |
604133b5 AR |
8894 | char *trigger_func_name; |
8895 | ||
3086aeae | 8896 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8897 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8898 | else |
604133b5 | 8899 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8900 | |
8cdf0e15 VP |
8901 | create_breakpoint (get_current_arch (), |
8902 | trigger_func_name, cond_string, -1, | |
8903 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 8904 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
8905 | 0, |
8906 | AUTO_BOOLEAN_TRUE /* pending */, | |
8907 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
8908 | 1 /* enabled */, |
8909 | 0 /* internal */); | |
3086aeae | 8910 | |
3086aeae DJ |
8911 | return 1; |
8912 | } | |
8913 | ||
c5aa993b | 8914 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
8915 | |
8916 | static void | |
fba45db2 KB |
8917 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8918 | int tempflag, int from_tty) | |
c906108c | 8919 | { |
c5aa993b | 8920 | char *cond_string = NULL; |
c5aa993b | 8921 | |
44feb3ce TT |
8922 | if (!arg) |
8923 | arg = ""; | |
c906108c | 8924 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8925 | |
c906108c SS |
8926 | cond_string = ep_parse_optional_if_clause (&arg); |
8927 | ||
8928 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8929 | error (_("Junk at end of arguments.")); |
c906108c | 8930 | |
059fb39f PM |
8931 | if (ex_event != EX_EVENT_THROW |
8932 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 8933 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 8934 | |
3086aeae DJ |
8935 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
8936 | return; | |
8937 | ||
8a3fe4f8 | 8938 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
8939 | } |
8940 | ||
44feb3ce TT |
8941 | /* Implementation of "catch catch" command. */ |
8942 | ||
8943 | static void | |
8944 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8945 | { | |
8946 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8947 | |
44feb3ce TT |
8948 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
8949 | } | |
8950 | ||
8951 | /* Implementation of "catch throw" command. */ | |
8952 | ||
8953 | static void | |
8954 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8955 | { | |
8956 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 8957 | |
44feb3ce TT |
8958 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
8959 | } | |
8960 | ||
f7f9143b JB |
8961 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8962 | ||
8963 | static void | |
a6d9a66e UW |
8964 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8965 | struct symtab_and_line sal, | |
f7f9143b JB |
8966 | char *addr_string, |
8967 | char *exp_string, | |
8968 | char *cond_string, | |
8969 | struct expression *cond, | |
8970 | struct breakpoint_ops *ops, | |
8971 | int tempflag, | |
8972 | int from_tty) | |
8973 | { | |
8974 | struct breakpoint *b; | |
8975 | ||
8976 | if (from_tty) | |
8977 | { | |
5af949e3 UW |
8978 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8979 | if (!loc_gdbarch) | |
8980 | loc_gdbarch = gdbarch; | |
8981 | ||
6c95b8df PA |
8982 | describe_other_breakpoints (loc_gdbarch, |
8983 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8984 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8985 | version for exception catchpoints, because two catchpoints | |
8986 | used for different exception names will use the same address. | |
8987 | In this case, a "breakpoint ... also set at..." warning is | |
8988 | unproductive. Besides. the warning phrasing is also a bit | |
8989 | inapropriate, we should use the word catchpoint, and tell | |
8990 | the user what type of catchpoint it is. The above is good | |
8991 | enough for now, though. */ | |
8992 | } | |
8993 | ||
a6d9a66e | 8994 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8995 | set_breakpoint_count (breakpoint_count + 1); |
8996 | ||
8997 | b->enable_state = bp_enabled; | |
8998 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8999 | b->number = breakpoint_count; | |
9000 | b->ignore_count = 0; | |
511a6cd4 | 9001 | b->loc->cond = cond; |
f7f9143b JB |
9002 | b->addr_string = addr_string; |
9003 | b->language = language_ada; | |
9004 | b->cond_string = cond_string; | |
9005 | b->exp_string = exp_string; | |
9006 | b->thread = -1; | |
9007 | b->ops = ops; | |
f7f9143b JB |
9008 | |
9009 | mention (b); | |
b60e7edf | 9010 | update_global_location_list (1); |
f7f9143b JB |
9011 | } |
9012 | ||
9013 | /* Implement the "catch exception" command. */ | |
9014 | ||
9015 | static void | |
44feb3ce TT |
9016 | catch_ada_exception_command (char *arg, int from_tty, |
9017 | struct cmd_list_element *command) | |
f7f9143b | 9018 | { |
a6d9a66e | 9019 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9020 | int tempflag; |
f7f9143b | 9021 | struct symtab_and_line sal; |
f7f9143b JB |
9022 | char *addr_string = NULL; |
9023 | char *exp_string = NULL; | |
9024 | char *cond_string = NULL; | |
9025 | struct expression *cond = NULL; | |
9026 | struct breakpoint_ops *ops = NULL; | |
9027 | ||
44feb3ce TT |
9028 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9029 | ||
9030 | if (!arg) | |
9031 | arg = ""; | |
f7f9143b JB |
9032 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9033 | &cond_string, &cond, &ops); | |
a6d9a66e | 9034 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9035 | cond_string, cond, ops, tempflag, |
9036 | from_tty); | |
9037 | } | |
9038 | ||
a96d9b2e SDJ |
9039 | /* Cleanup function for a syscall filter list. */ |
9040 | static void | |
9041 | clean_up_filters (void *arg) | |
9042 | { | |
9043 | VEC(int) *iter = *(VEC(int) **) arg; | |
9044 | VEC_free (int, iter); | |
9045 | } | |
9046 | ||
9047 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9048 | filter list, or NULL if no filtering is required. */ | |
9049 | static VEC(int) * | |
9050 | catch_syscall_split_args (char *arg) | |
9051 | { | |
9052 | VEC(int) *result = NULL; | |
9053 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9054 | ||
9055 | while (*arg != '\0') | |
9056 | { | |
9057 | int i, syscall_number; | |
9058 | char *endptr; | |
9059 | char cur_name[128]; | |
9060 | struct syscall s; | |
9061 | ||
9062 | /* Skip whitespace. */ | |
9063 | while (isspace (*arg)) | |
9064 | arg++; | |
9065 | ||
9066 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9067 | cur_name[i] = arg[i]; | |
9068 | cur_name[i] = '\0'; | |
9069 | arg += i; | |
9070 | ||
9071 | /* Check if the user provided a syscall name or a number. */ | |
9072 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9073 | if (*endptr == '\0') | |
bccd0dd2 | 9074 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9075 | else |
9076 | { | |
9077 | /* We have a name. Let's check if it's valid and convert it | |
9078 | to a number. */ | |
9079 | get_syscall_by_name (cur_name, &s); | |
9080 | ||
9081 | if (s.number == UNKNOWN_SYSCALL) | |
9082 | /* Here we have to issue an error instead of a warning, because | |
9083 | GDB cannot do anything useful if there's no syscall number to | |
9084 | be caught. */ | |
9085 | error (_("Unknown syscall name '%s'."), cur_name); | |
9086 | } | |
9087 | ||
9088 | /* Ok, it's valid. */ | |
9089 | VEC_safe_push (int, result, s.number); | |
9090 | } | |
9091 | ||
9092 | discard_cleanups (cleanup); | |
9093 | return result; | |
9094 | } | |
9095 | ||
9096 | /* Implement the "catch syscall" command. */ | |
9097 | ||
9098 | static void | |
cc59ec59 MS |
9099 | catch_syscall_command_1 (char *arg, int from_tty, |
9100 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9101 | { |
9102 | int tempflag; | |
9103 | VEC(int) *filter; | |
9104 | struct syscall s; | |
9105 | struct gdbarch *gdbarch = get_current_arch (); | |
9106 | ||
9107 | /* Checking if the feature if supported. */ | |
9108 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9109 | error (_("The feature 'catch syscall' is not supported on \ | |
9110 | this architeture yet.")); | |
9111 | ||
9112 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9113 | ||
9114 | ep_skip_leading_whitespace (&arg); | |
9115 | ||
9116 | /* We need to do this first "dummy" translation in order | |
9117 | to get the syscall XML file loaded or, most important, | |
9118 | to display a warning to the user if there's no XML file | |
9119 | for his/her architecture. */ | |
9120 | get_syscall_by_number (0, &s); | |
9121 | ||
9122 | /* The allowed syntax is: | |
9123 | catch syscall | |
9124 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9125 | ||
9126 | Let's check if there's a syscall name. */ | |
9127 | ||
9128 | if (arg != NULL) | |
9129 | filter = catch_syscall_split_args (arg); | |
9130 | else | |
9131 | filter = NULL; | |
9132 | ||
9133 | create_syscall_event_catchpoint (tempflag, filter, | |
9134 | &catch_syscall_breakpoint_ops); | |
9135 | } | |
9136 | ||
f7f9143b JB |
9137 | /* Implement the "catch assert" command. */ |
9138 | ||
9139 | static void | |
44feb3ce | 9140 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 9141 | { |
a6d9a66e | 9142 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9143 | int tempflag; |
f7f9143b JB |
9144 | struct symtab_and_line sal; |
9145 | char *addr_string = NULL; | |
9146 | struct breakpoint_ops *ops = NULL; | |
9147 | ||
44feb3ce TT |
9148 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9149 | ||
9150 | if (!arg) | |
9151 | arg = ""; | |
f7f9143b | 9152 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9153 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9154 | ops, tempflag, from_tty); | |
f7f9143b JB |
9155 | } |
9156 | ||
c906108c | 9157 | static void |
fba45db2 | 9158 | catch_command (char *arg, int from_tty) |
c906108c | 9159 | { |
44feb3ce | 9160 | error (_("Catch requires an event name.")); |
c906108c SS |
9161 | } |
9162 | \f | |
9163 | ||
9164 | static void | |
fba45db2 | 9165 | tcatch_command (char *arg, int from_tty) |
c906108c | 9166 | { |
44feb3ce | 9167 | error (_("Catch requires an event name.")); |
c906108c SS |
9168 | } |
9169 | ||
80f8a6eb | 9170 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9171 | |
9172 | static void | |
fba45db2 | 9173 | clear_command (char *arg, int from_tty) |
c906108c | 9174 | { |
d6e956e5 VP |
9175 | struct breakpoint *b; |
9176 | VEC(breakpoint_p) *found = 0; | |
9177 | int ix; | |
c906108c SS |
9178 | int default_match; |
9179 | struct symtabs_and_lines sals; | |
9180 | struct symtab_and_line sal; | |
c906108c SS |
9181 | int i; |
9182 | ||
9183 | if (arg) | |
9184 | { | |
9185 | sals = decode_line_spec (arg, 1); | |
9186 | default_match = 0; | |
9187 | } | |
9188 | else | |
9189 | { | |
c5aa993b | 9190 | sals.sals = (struct symtab_and_line *) |
c906108c | 9191 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9192 | make_cleanup (xfree, sals.sals); |
fe39c653 | 9193 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
9194 | sal.line = default_breakpoint_line; |
9195 | sal.symtab = default_breakpoint_symtab; | |
9196 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9197 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9198 | if (sal.symtab == 0) |
8a3fe4f8 | 9199 | error (_("No source file specified.")); |
c906108c SS |
9200 | |
9201 | sals.sals[0] = sal; | |
9202 | sals.nelts = 1; | |
9203 | ||
9204 | default_match = 1; | |
9205 | } | |
9206 | ||
ed0616c6 VP |
9207 | /* We don't call resolve_sal_pc here. That's not |
9208 | as bad as it seems, because all existing breakpoints | |
9209 | typically have both file/line and pc set. So, if | |
9210 | clear is given file/line, we can match this to existing | |
9211 | breakpoint without obtaining pc at all. | |
9212 | ||
9213 | We only support clearing given the address explicitly | |
9214 | present in breakpoint table. Say, we've set breakpoint | |
9215 | at file:line. There were several PC values for that file:line, | |
9216 | due to optimization, all in one block. | |
9217 | We've picked one PC value. If "clear" is issued with another | |
9218 | PC corresponding to the same file:line, the breakpoint won't | |
9219 | be cleared. We probably can still clear the breakpoint, but | |
9220 | since the other PC value is never presented to user, user | |
9221 | can only find it by guessing, and it does not seem important | |
9222 | to support that. */ | |
9223 | ||
c906108c | 9224 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
9225 | to it. Do it in two passes, solely to preserve the current |
9226 | behavior that from_tty is forced true if we delete more than | |
9227 | one breakpoint. */ | |
c906108c | 9228 | |
80f8a6eb | 9229 | found = NULL; |
c906108c SS |
9230 | for (i = 0; i < sals.nelts; i++) |
9231 | { | |
9232 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9233 | If line given (pc == 0), clear all bpts on specified line. |
9234 | If defaulting, clear all bpts on default line | |
c906108c | 9235 | or at default pc. |
c5aa993b JM |
9236 | |
9237 | defaulting sal.pc != 0 tests to do | |
9238 | ||
9239 | 0 1 pc | |
9240 | 1 1 pc _and_ line | |
9241 | 0 0 line | |
9242 | 1 0 <can't happen> */ | |
c906108c SS |
9243 | |
9244 | sal = sals.sals[i]; | |
c906108c | 9245 | |
d6e956e5 VP |
9246 | /* Find all matching breakpoints and add them to |
9247 | 'found'. */ | |
9248 | ALL_BREAKPOINTS (b) | |
c5aa993b | 9249 | { |
0d381245 | 9250 | int match = 0; |
80f8a6eb | 9251 | /* Are we going to delete b? */ |
cc60f2e3 | 9252 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9253 | { |
9254 | struct bp_location *loc = b->loc; | |
9255 | for (; loc; loc = loc->next) | |
9256 | { | |
6c95b8df PA |
9257 | int pc_match = sal.pc |
9258 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9259 | && (loc->address == sal.pc) |
9260 | && (!section_is_overlay (loc->section) | |
9261 | || loc->section == sal.section); | |
9262 | int line_match = ((default_match || (0 == sal.pc)) | |
9263 | && b->source_file != NULL | |
9264 | && sal.symtab != NULL | |
6c95b8df | 9265 | && sal.pspace == loc->pspace |
0d381245 VP |
9266 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
9267 | && b->line_number == sal.line); | |
9268 | if (pc_match || line_match) | |
9269 | { | |
9270 | match = 1; | |
9271 | break; | |
9272 | } | |
9273 | } | |
9274 | } | |
9275 | ||
9276 | if (match) | |
d6e956e5 | 9277 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9278 | } |
80f8a6eb MS |
9279 | } |
9280 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9281 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9282 | { |
9283 | if (arg) | |
8a3fe4f8 | 9284 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9285 | else |
8a3fe4f8 | 9286 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9287 | } |
c906108c | 9288 | |
d6e956e5 | 9289 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
9290 | from_tty = 1; /* Always report if deleted more than one */ |
9291 | if (from_tty) | |
a3f17187 | 9292 | { |
d6e956e5 | 9293 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9294 | printf_unfiltered (_("Deleted breakpoint ")); |
9295 | else | |
9296 | printf_unfiltered (_("Deleted breakpoints ")); | |
9297 | } | |
80f8a6eb | 9298 | breakpoints_changed (); |
d6e956e5 VP |
9299 | |
9300 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9301 | { |
c5aa993b | 9302 | if (from_tty) |
d6e956e5 VP |
9303 | printf_unfiltered ("%d ", b->number); |
9304 | delete_breakpoint (b); | |
c906108c | 9305 | } |
80f8a6eb MS |
9306 | if (from_tty) |
9307 | putchar_unfiltered ('\n'); | |
c906108c SS |
9308 | } |
9309 | \f | |
9310 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9311 | all breakpoints that are marked for deletion, whether hit or not. | |
9312 | This is called after any breakpoint is hit, or after errors. */ | |
9313 | ||
9314 | void | |
fba45db2 | 9315 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
9316 | { |
9317 | struct breakpoint *b, *temp; | |
9318 | ||
9319 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9320 | if (bs->breakpoint_at |
9321 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9322 | && bs->stop) |
f431efe5 | 9323 | delete_breakpoint (bs->breakpoint_at); |
c906108c SS |
9324 | |
9325 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 9326 | { |
b5de0fa7 | 9327 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9328 | delete_breakpoint (b); |
9329 | } | |
c906108c SS |
9330 | } |
9331 | ||
494cfb0f | 9332 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
9333 | Sort elements primarily by their ADDRESS (no matter what does |
9334 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
9335 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
9336 | is sorted stable way despite qsort being an instable algorithm. */ | |
9337 | ||
9338 | static int | |
494cfb0f | 9339 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9340 | { |
494cfb0f JK |
9341 | struct bp_location *a = *(void **) ap; |
9342 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9343 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9344 | int a_perm = a->owner->enable_state == bp_permanent; |
9345 | int b_perm = b->owner->enable_state == bp_permanent; | |
9346 | ||
9347 | if (a->address != b->address) | |
9348 | return (a->address > b->address) - (a->address < b->address); | |
9349 | ||
9350 | /* Sort permanent breakpoints first. */ | |
9351 | if (a_perm != b_perm) | |
9352 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9353 | ||
9354 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
9355 | breakpoint can be sorted in arbitrary order. */ | |
9356 | ||
9357 | if (a->owner->number != b->owner->number) | |
9358 | return (a->owner->number > b->owner->number) | |
9359 | - (a->owner->number < b->owner->number); | |
9360 | ||
9361 | return (a > b) - (a < b); | |
9362 | } | |
9363 | ||
876fa593 JK |
9364 | /* Set bp_location_placed_address_before_address_max and |
9365 | bp_location_shadow_len_after_address_max according to the current content of | |
9366 | the bp_location array. */ | |
f7545552 TT |
9367 | |
9368 | static void | |
876fa593 | 9369 | bp_location_target_extensions_update (void) |
f7545552 | 9370 | { |
876fa593 JK |
9371 | struct bp_location *bl, **blp_tmp; |
9372 | ||
9373 | bp_location_placed_address_before_address_max = 0; | |
9374 | bp_location_shadow_len_after_address_max = 0; | |
9375 | ||
9376 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9377 | { | |
9378 | CORE_ADDR start, end, addr; | |
9379 | ||
9380 | if (!bp_location_has_shadow (bl)) | |
9381 | continue; | |
9382 | ||
9383 | start = bl->target_info.placed_address; | |
9384 | end = start + bl->target_info.shadow_len; | |
9385 | ||
9386 | gdb_assert (bl->address >= start); | |
9387 | addr = bl->address - start; | |
9388 | if (addr > bp_location_placed_address_before_address_max) | |
9389 | bp_location_placed_address_before_address_max = addr; | |
9390 | ||
9391 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9392 | ||
9393 | gdb_assert (bl->address < end); | |
9394 | addr = end - bl->address; | |
9395 | if (addr > bp_location_shadow_len_after_address_max) | |
9396 | bp_location_shadow_len_after_address_max = addr; | |
9397 | } | |
f7545552 TT |
9398 | } |
9399 | ||
4cd9bd08 | 9400 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9401 | into the inferior, only remove already-inserted locations that no |
9402 | longer should be inserted. Functions that delete a breakpoint or | |
9403 | breakpoints should pass false, so that deleting a breakpoint | |
9404 | doesn't have the side effect of inserting the locations of other | |
9405 | breakpoints that are marked not-inserted, but should_be_inserted | |
9406 | returns true on them. | |
9407 | ||
9408 | This behaviour is useful is situations close to tear-down -- e.g., | |
9409 | after an exec, while the target still has execution, but breakpoint | |
9410 | shadows of the previous executable image should *NOT* be restored | |
9411 | to the new image; or before detaching, where the target still has | |
9412 | execution and wants to delete breakpoints from GDB's lists, and all | |
9413 | breakpoints had already been removed from the inferior. */ | |
9414 | ||
0d381245 | 9415 | static void |
b60e7edf | 9416 | update_global_location_list (int should_insert) |
0d381245 | 9417 | { |
74960c60 | 9418 | struct breakpoint *b; |
876fa593 | 9419 | struct bp_location **locp, *loc; |
f7545552 TT |
9420 | struct cleanup *cleanups; |
9421 | ||
2d134ed3 PA |
9422 | /* Used in the duplicates detection below. When iterating over all |
9423 | bp_locations, points to the first bp_location of a given address. | |
9424 | Breakpoints and watchpoints of different types are never | |
9425 | duplicates of each other. Keep one pointer for each type of | |
9426 | breakpoint/watchpoint, so we only need to loop over all locations | |
9427 | once. */ | |
9428 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9429 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9430 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9431 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
9432 | |
9433 | /* Saved former bp_location array which we compare against the newly built | |
9434 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
9435 | struct bp_location **old_location, **old_locp; | |
9436 | unsigned old_location_count; | |
9437 | ||
9438 | old_location = bp_location; | |
9439 | old_location_count = bp_location_count; | |
9440 | bp_location = NULL; | |
9441 | bp_location_count = 0; | |
9442 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9443 | |
74960c60 | 9444 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9445 | for (loc = b->loc; loc; loc = loc->next) |
9446 | bp_location_count++; | |
9447 | ||
9448 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9449 | locp = bp_location; | |
9450 | ALL_BREAKPOINTS (b) | |
9451 | for (loc = b->loc; loc; loc = loc->next) | |
9452 | *locp++ = loc; | |
9453 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9454 | bp_location_compare); |
876fa593 JK |
9455 | |
9456 | bp_location_target_extensions_update (); | |
74960c60 VP |
9457 | |
9458 | /* Identify bp_location instances that are no longer present in the new | |
9459 | list, and therefore should be freed. Note that it's not necessary that | |
9460 | those locations should be removed from inferior -- if there's another | |
9461 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
9462 | we don't need to remove/insert the location. |
9463 | ||
9464 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
9465 | former bp_location array state respectively. */ | |
9466 | ||
9467 | locp = bp_location; | |
9468 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9469 | old_locp++) | |
74960c60 | 9470 | { |
876fa593 | 9471 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9472 | struct bp_location **loc2p; |
876fa593 JK |
9473 | |
9474 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 9475 | have to free it. */ |
c7d46a38 | 9476 | int found_object = 0; |
20874c92 VP |
9477 | /* Tells if the location should remain inserted in the target. */ |
9478 | int keep_in_target = 0; | |
9479 | int removed = 0; | |
876fa593 JK |
9480 | |
9481 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
9482 | at or being the one matching OLD_LOC. */ | |
9483 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 9484 | && (*locp)->address < old_loc->address) |
876fa593 | 9485 | locp++; |
c7d46a38 PA |
9486 | |
9487 | for (loc2p = locp; | |
9488 | (loc2p < bp_location + bp_location_count | |
9489 | && (*loc2p)->address == old_loc->address); | |
9490 | loc2p++) | |
9491 | { | |
9492 | if (*loc2p == old_loc) | |
9493 | { | |
9494 | found_object = 1; | |
9495 | break; | |
9496 | } | |
9497 | } | |
74960c60 VP |
9498 | |
9499 | /* If this location is no longer present, and inserted, look if there's | |
9500 | maybe a new location at the same address. If so, mark that one | |
9501 | inserted, and don't remove this one. This is needed so that we | |
9502 | don't have a time window where a breakpoint at certain location is not | |
9503 | inserted. */ | |
9504 | ||
876fa593 | 9505 | if (old_loc->inserted) |
0d381245 | 9506 | { |
74960c60 | 9507 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 9508 | |
876fa593 | 9509 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
9510 | { |
9511 | /* The location is still present in the location list, and still | |
9512 | should be inserted. Don't do anything. */ | |
20874c92 | 9513 | keep_in_target = 1; |
74960c60 VP |
9514 | } |
9515 | else | |
9516 | { | |
9517 | /* The location is either no longer present, or got disabled. | |
9518 | See if there's another location at the same address, in which | |
9519 | case we don't need to remove this one from the target. */ | |
876fa593 | 9520 | |
2bdf28a0 | 9521 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9522 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9523 | { | |
876fa593 | 9524 | for (loc2p = locp; |
c7d46a38 PA |
9525 | (loc2p < bp_location + bp_location_count |
9526 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9527 | loc2p++) |
9528 | { | |
9529 | struct bp_location *loc2 = *loc2p; | |
9530 | ||
2d134ed3 | 9531 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9532 | { |
9533 | /* For the sake of should_be_inserted. | |
9534 | Duplicates check below will fix up this later. */ | |
9535 | loc2->duplicate = 0; | |
85d721b8 PA |
9536 | |
9537 | /* Read watchpoint locations are switched to | |
9538 | access watchpoints, if the former are not | |
9539 | supported, but the latter are. */ | |
9540 | if (is_hardware_watchpoint (old_loc->owner)) | |
9541 | { | |
9542 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9543 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9544 | } | |
9545 | ||
c7d46a38 PA |
9546 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9547 | { | |
9548 | loc2->inserted = 1; | |
9549 | loc2->target_info = old_loc->target_info; | |
9550 | keep_in_target = 1; | |
9551 | break; | |
9552 | } | |
876fa593 JK |
9553 | } |
9554 | } | |
9555 | } | |
74960c60 VP |
9556 | } |
9557 | ||
20874c92 VP |
9558 | if (!keep_in_target) |
9559 | { | |
876fa593 | 9560 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
9561 | { |
9562 | /* This is just about all we can do. We could keep this | |
9563 | location on the global list, and try to remove it next | |
9564 | time, but there's no particular reason why we will | |
9565 | succeed next time. | |
9566 | ||
876fa593 | 9567 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
9568 | as delete_breakpoint frees the breakpoint only |
9569 | after calling us. */ | |
9570 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 9571 | old_loc->owner->number); |
20874c92 VP |
9572 | } |
9573 | removed = 1; | |
9574 | } | |
0d381245 | 9575 | } |
74960c60 VP |
9576 | |
9577 | if (!found_object) | |
1c5cfe86 | 9578 | { |
db82e815 PA |
9579 | if (removed && non_stop |
9580 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9581 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9582 | { |
db82e815 PA |
9583 | /* This location was removed from the target. In |
9584 | non-stop mode, a race condition is possible where | |
9585 | we've removed a breakpoint, but stop events for that | |
9586 | breakpoint are already queued and will arrive later. | |
9587 | We apply an heuristic to be able to distinguish such | |
9588 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9589 | breakpoint location for a bit, and will retire it | |
9590 | after we see some number of events. The theory here | |
9591 | is that reporting of events should, "on the average", | |
9592 | be fair, so after a while we'll see events from all | |
9593 | threads that have anything of interest, and no longer | |
9594 | need to keep this breakpoint location around. We | |
9595 | don't hold locations forever so to reduce chances of | |
9596 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9597 | SIGTRAP. | |
9598 | ||
9599 | The heuristic failing can be disastrous on | |
9600 | decr_pc_after_break targets. | |
9601 | ||
9602 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9603 | if we fail to recognize a late breakpoint SIGTRAP, | |
9604 | because events_till_retirement has reached 0 too | |
9605 | soon, we'll fail to do the PC adjustment, and report | |
9606 | a random SIGTRAP to the user. When the user resumes | |
9607 | the inferior, it will most likely immediately crash | |
2dec564e | 9608 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9609 | corrupted, because of being resumed e.g., in the |
9610 | middle of a multi-byte instruction, or skipped a | |
9611 | one-byte instruction. This was actually seen happen | |
9612 | on native x86-linux, and should be less rare on | |
9613 | targets that do not support new thread events, like | |
9614 | remote, due to the heuristic depending on | |
9615 | thread_count. | |
9616 | ||
9617 | Mistaking a random SIGTRAP for a breakpoint trap | |
9618 | causes similar symptoms (PC adjustment applied when | |
9619 | it shouldn't), but then again, playing with SIGTRAPs | |
9620 | behind the debugger's back is asking for trouble. | |
9621 | ||
9622 | Since hardware watchpoint traps are always | |
9623 | distinguishable from other traps, so we don't need to | |
9624 | apply keep hardware watchpoint moribund locations | |
9625 | around. We simply always ignore hardware watchpoint | |
9626 | traps we can no longer explain. */ | |
9627 | ||
876fa593 JK |
9628 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9629 | old_loc->owner = NULL; | |
20874c92 | 9630 | |
876fa593 | 9631 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9632 | } |
9633 | else | |
f431efe5 PA |
9634 | { |
9635 | old_loc->owner = NULL; | |
9636 | decref_bp_location (&old_loc); | |
9637 | } | |
20874c92 | 9638 | } |
74960c60 | 9639 | } |
1c5cfe86 | 9640 | |
2d134ed3 PA |
9641 | /* Rescan breakpoints at the same address and section, marking the |
9642 | first one as "first" and any others as "duplicates". This is so | |
9643 | that the bpt instruction is only inserted once. If we have a | |
9644 | permanent breakpoint at the same place as BPT, make that one the | |
9645 | official one, and the rest as duplicates. Permanent breakpoints | |
9646 | are sorted first for the same address. | |
9647 | ||
9648 | Do the same for hardware watchpoints, but also considering the | |
9649 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9650 | |
2d134ed3 PA |
9651 | bp_loc_first = NULL; |
9652 | wp_loc_first = NULL; | |
9653 | awp_loc_first = NULL; | |
9654 | rwp_loc_first = NULL; | |
876fa593 | 9655 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9656 | { |
2bdf28a0 | 9657 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
876fa593 | 9658 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9659 | struct bp_location **loc_first_p; |
876fa593 JK |
9660 | |
9661 | if (b->enable_state == bp_disabled | |
9662 | || b->enable_state == bp_call_disabled | |
9663 | || b->enable_state == bp_startup_disabled | |
9664 | || !loc->enabled | |
9665 | || loc->shlib_disabled | |
15c3d785 | 9666 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9667 | || is_tracepoint (b)) |
876fa593 JK |
9668 | continue; |
9669 | ||
9670 | /* Permanent breakpoint should always be inserted. */ | |
9671 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9672 | internal_error (__FILE__, __LINE__, | |
9673 | _("allegedly permanent breakpoint is not " | |
9674 | "actually inserted")); | |
9675 | ||
2d134ed3 PA |
9676 | if (b->type == bp_hardware_watchpoint) |
9677 | loc_first_p = &wp_loc_first; | |
9678 | else if (b->type == bp_read_watchpoint) | |
9679 | loc_first_p = &rwp_loc_first; | |
9680 | else if (b->type == bp_access_watchpoint) | |
9681 | loc_first_p = &awp_loc_first; | |
9682 | else | |
9683 | loc_first_p = &bp_loc_first; | |
9684 | ||
9685 | if (*loc_first_p == NULL | |
9686 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9687 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9688 | { |
2d134ed3 | 9689 | *loc_first_p = loc; |
876fa593 JK |
9690 | loc->duplicate = 0; |
9691 | continue; | |
9692 | } | |
9693 | ||
9694 | loc->duplicate = 1; | |
9695 | ||
2d134ed3 PA |
9696 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9697 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9698 | internal_error (__FILE__, __LINE__, |
9699 | _("another breakpoint was inserted on top of " | |
9700 | "a permanent breakpoint")); | |
0d381245 | 9701 | } |
74960c60 | 9702 | |
50c71eaf | 9703 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9704 | && (have_live_inferiors () |
2567c7d9 | 9705 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9706 | insert_breakpoint_locations (); |
f7545552 TT |
9707 | |
9708 | do_cleanups (cleanups); | |
74960c60 VP |
9709 | } |
9710 | ||
20874c92 VP |
9711 | void |
9712 | breakpoint_retire_moribund (void) | |
9713 | { | |
9714 | struct bp_location *loc; | |
9715 | int ix; | |
9716 | ||
9717 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9718 | if (--(loc->events_till_retirement) == 0) | |
9719 | { | |
f431efe5 | 9720 | decref_bp_location (&loc); |
20874c92 VP |
9721 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
9722 | --ix; | |
9723 | } | |
9724 | } | |
9725 | ||
74960c60 | 9726 | static void |
b60e7edf | 9727 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9728 | { |
9729 | struct gdb_exception e; | |
cc59ec59 | 9730 | |
74960c60 | 9731 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9732 | update_global_location_list (inserting); |
0d381245 VP |
9733 | } |
9734 | ||
f431efe5 PA |
9735 | /* Clear BKP from a BPS. */ |
9736 | ||
a474d7c2 | 9737 | static void |
f431efe5 | 9738 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
9739 | { |
9740 | bpstat bs; | |
cc59ec59 | 9741 | |
a474d7c2 | 9742 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 9743 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
9744 | { |
9745 | bs->breakpoint_at = NULL; | |
9746 | bs->old_val = NULL; | |
9747 | /* bs->commands will be freed later. */ | |
9748 | } | |
9749 | } | |
9750 | ||
9751 | /* Callback for iterate_over_threads. */ | |
9752 | static int | |
f431efe5 | 9753 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 9754 | { |
f431efe5 | 9755 | struct breakpoint *bpt = data; |
cc59ec59 | 9756 | |
16c381f0 | 9757 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
9758 | return 0; |
9759 | } | |
9760 | ||
53a5351d | 9761 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 9762 | structures. */ |
c906108c SS |
9763 | |
9764 | void | |
fba45db2 | 9765 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9766 | { |
52f0bd74 | 9767 | struct breakpoint *b; |
c906108c | 9768 | |
8a3fe4f8 | 9769 | gdb_assert (bpt != NULL); |
c906108c SS |
9770 | |
9771 | /* Has this bp already been deleted? This can happen because multiple | |
9772 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
9773 | ||
9774 | One example of this happening is a watchpoint's scope bp. When the | |
9775 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
9776 | delete it. We also delete its scope bp. But the scope bp is marked | |
9777 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
9778 | checked for auto-deleting bp's, which are deleted. | |
9779 | ||
9780 | A real solution to this problem might involve reference counts in bp's, | |
9781 | and/or giving them pointers back to their referencing bpstat's, and | |
9782 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 9783 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
9784 | if (bpt->type == bp_none) |
9785 | return; | |
9786 | ||
e5a0a904 JK |
9787 | /* At least avoid this stale reference until the reference counting of |
9788 | breakpoints gets resolved. */ | |
9789 | if (bpt->related_breakpoint != NULL) | |
9790 | { | |
9791 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9792 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9793 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9794 | bpt->related_breakpoint = NULL; | |
9795 | } | |
9796 | ||
383f836e | 9797 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9798 | |
c906108c SS |
9799 | if (breakpoint_chain == bpt) |
9800 | breakpoint_chain = bpt->next; | |
9801 | ||
c906108c SS |
9802 | ALL_BREAKPOINTS (b) |
9803 | if (b->next == bpt) | |
c5aa993b JM |
9804 | { |
9805 | b->next = bpt->next; | |
9806 | break; | |
9807 | } | |
c906108c | 9808 | |
9add0f1b | 9809 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9810 | xfree (bpt->cond_string); |
9811 | xfree (bpt->cond_exp); | |
9812 | xfree (bpt->addr_string); | |
9813 | xfree (bpt->exp); | |
9814 | xfree (bpt->exp_string); | |
d63d0675 | 9815 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
9816 | value_free (bpt->val); |
9817 | xfree (bpt->source_file); | |
9818 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9819 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 9820 | |
f431efe5 PA |
9821 | |
9822 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
9823 | been freed. */ | |
9824 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
9825 | in all threeds for now. Note that we cannot just remove bpstats | |
9826 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
9827 | commands are associated with the bpstat; if we remove it here, | |
9828 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
9829 | event-top.c won't do anything, and temporary breakpoints with | |
9830 | commands won't work. */ | |
9831 | ||
9832 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
9833 | ||
74960c60 VP |
9834 | /* Now that breakpoint is removed from breakpoint |
9835 | list, update the global location list. This | |
9836 | will remove locations that used to belong to | |
9837 | this breakpoint. Do this before freeing | |
9838 | the breakpoint itself, since remove_breakpoint | |
9839 | looks at location's owner. It might be better | |
9840 | design to have location completely self-contained, | |
9841 | but it's not the case now. */ | |
b60e7edf | 9842 | update_global_location_list (0); |
74960c60 VP |
9843 | |
9844 | ||
c906108c SS |
9845 | /* On the chance that someone will soon try again to delete this same |
9846 | bp, we mark it as deleted before freeing its storage. */ | |
9847 | bpt->type = bp_none; | |
9848 | ||
b8c9b27d | 9849 | xfree (bpt); |
c906108c SS |
9850 | } |
9851 | ||
4d6140d9 AC |
9852 | static void |
9853 | do_delete_breakpoint_cleanup (void *b) | |
9854 | { | |
9855 | delete_breakpoint (b); | |
9856 | } | |
9857 | ||
9858 | struct cleanup * | |
9859 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9860 | { | |
9861 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9862 | } | |
9863 | ||
95a42b64 TT |
9864 | /* A callback for map_breakpoint_numbers that calls |
9865 | delete_breakpoint. */ | |
9866 | ||
9867 | static void | |
9868 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9869 | { | |
9870 | delete_breakpoint (b); | |
9871 | } | |
9872 | ||
c906108c | 9873 | void |
fba45db2 | 9874 | delete_command (char *arg, int from_tty) |
c906108c SS |
9875 | { |
9876 | struct breakpoint *b, *temp; | |
9877 | ||
ea9365bb TT |
9878 | dont_repeat (); |
9879 | ||
c906108c SS |
9880 | if (arg == 0) |
9881 | { | |
9882 | int breaks_to_delete = 0; | |
9883 | ||
9884 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
9885 | Do not delete internal or call-dummy breakpoints, these |
9886 | have to be deleted with an explicit breakpoint number argument. */ | |
9887 | ALL_BREAKPOINTS (b) | |
9888 | { | |
059fb39f | 9889 | if (b->type != bp_call_dummy |
aa7d318d | 9890 | && b->type != bp_std_terminate |
059fb39f | 9891 | && b->type != bp_shlib_event |
4efc6507 | 9892 | && b->type != bp_jit_event |
059fb39f PM |
9893 | && b->type != bp_thread_event |
9894 | && b->type != bp_overlay_event | |
0fd8e87f | 9895 | && b->type != bp_longjmp_master |
aa7d318d | 9896 | && b->type != bp_std_terminate_master |
186c406b | 9897 | && b->type != bp_exception_master |
059fb39f | 9898 | && b->number >= 0) |
973d738b DJ |
9899 | { |
9900 | breaks_to_delete = 1; | |
9901 | break; | |
9902 | } | |
c5aa993b | 9903 | } |
c906108c SS |
9904 | |
9905 | /* Ask user only if there are some breakpoints to delete. */ | |
9906 | if (!from_tty | |
e2e0b3e5 | 9907 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9908 | { |
c5aa993b JM |
9909 | ALL_BREAKPOINTS_SAFE (b, temp) |
9910 | { | |
059fb39f | 9911 | if (b->type != bp_call_dummy |
aa7d318d | 9912 | && b->type != bp_std_terminate |
059fb39f PM |
9913 | && b->type != bp_shlib_event |
9914 | && b->type != bp_thread_event | |
4efc6507 | 9915 | && b->type != bp_jit_event |
059fb39f | 9916 | && b->type != bp_overlay_event |
0fd8e87f | 9917 | && b->type != bp_longjmp_master |
aa7d318d | 9918 | && b->type != bp_std_terminate_master |
186c406b | 9919 | && b->type != bp_exception_master |
059fb39f | 9920 | && b->number >= 0) |
c5aa993b JM |
9921 | delete_breakpoint (b); |
9922 | } | |
c906108c SS |
9923 | } |
9924 | } | |
9925 | else | |
95a42b64 | 9926 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
9927 | } |
9928 | ||
0d381245 VP |
9929 | static int |
9930 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 9931 | { |
0d381245 VP |
9932 | for (; loc; loc = loc->next) |
9933 | if (!loc->shlib_disabled) | |
9934 | return 0; | |
9935 | return 1; | |
fe3f5fa8 VP |
9936 | } |
9937 | ||
776592bf DE |
9938 | /* Subroutine of update_breakpoint_locations to simplify it. |
9939 | Return non-zero if multiple fns in list LOC have the same name. | |
9940 | Null names are ignored. */ | |
9941 | ||
9942 | static int | |
9943 | ambiguous_names_p (struct bp_location *loc) | |
9944 | { | |
9945 | struct bp_location *l; | |
9946 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
9947 | (int (*) (const void *, |
9948 | const void *)) streq, | |
776592bf DE |
9949 | NULL, xcalloc, xfree); |
9950 | ||
9951 | for (l = loc; l != NULL; l = l->next) | |
9952 | { | |
9953 | const char **slot; | |
9954 | const char *name = l->function_name; | |
9955 | ||
9956 | /* Allow for some names to be NULL, ignore them. */ | |
9957 | if (name == NULL) | |
9958 | continue; | |
9959 | ||
9960 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
9961 | INSERT); | |
9962 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
9963 | NULL. */ | |
9964 | if (*slot != NULL) | |
9965 | { | |
9966 | htab_delete (htab); | |
9967 | return 1; | |
9968 | } | |
9969 | *slot = name; | |
9970 | } | |
9971 | ||
9972 | htab_delete (htab); | |
9973 | return 0; | |
9974 | } | |
9975 | ||
0fb4aa4b PA |
9976 | /* When symbols change, it probably means the sources changed as well, |
9977 | and it might mean the static tracepoint markers are no longer at | |
9978 | the same address or line numbers they used to be at last we | |
9979 | checked. Losing your static tracepoints whenever you rebuild is | |
9980 | undesirable. This function tries to resync/rematch gdb static | |
9981 | tracepoints with the markers on the target, for static tracepoints | |
9982 | that have not been set by marker id. Static tracepoint that have | |
9983 | been set by marker id are reset by marker id in breakpoint_re_set. | |
9984 | The heuristic is: | |
9985 | ||
9986 | 1) For a tracepoint set at a specific address, look for a marker at | |
9987 | the old PC. If one is found there, assume to be the same marker. | |
9988 | If the name / string id of the marker found is different from the | |
9989 | previous known name, assume that means the user renamed the marker | |
9990 | in the sources, and output a warning. | |
9991 | ||
9992 | 2) For a tracepoint set at a given line number, look for a marker | |
9993 | at the new address of the old line number. If one is found there, | |
9994 | assume to be the same marker. If the name / string id of the | |
9995 | marker found is different from the previous known name, assume that | |
9996 | means the user renamed the marker in the sources, and output a | |
9997 | warning. | |
9998 | ||
9999 | 3) If a marker is no longer found at the same address or line, it | |
10000 | may mean the marker no longer exists. But it may also just mean | |
10001 | the code changed a bit. Maybe the user added a few lines of code | |
10002 | that made the marker move up or down (in line number terms). Ask | |
10003 | the target for info about the marker with the string id as we knew | |
10004 | it. If found, update line number and address in the matching | |
10005 | static tracepoint. This will get confused if there's more than one | |
10006 | marker with the same ID (possible in UST, although unadvised | |
10007 | precisely because it confuses tools). */ | |
10008 | ||
10009 | static struct symtab_and_line | |
10010 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10011 | { | |
10012 | struct static_tracepoint_marker marker; | |
10013 | CORE_ADDR pc; | |
10014 | int i; | |
10015 | ||
10016 | pc = sal.pc; | |
10017 | if (sal.line) | |
10018 | find_line_pc (sal.symtab, sal.line, &pc); | |
10019 | ||
10020 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10021 | { | |
10022 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10023 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10024 | b->number, | |
10025 | b->static_trace_marker_id, marker.str_id); | |
10026 | ||
10027 | xfree (b->static_trace_marker_id); | |
10028 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10029 | release_static_tracepoint_marker (&marker); | |
10030 | ||
10031 | return sal; | |
10032 | } | |
10033 | ||
10034 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10035 | by string ID. */ | |
10036 | if (!sal.explicit_pc | |
10037 | && sal.line != 0 | |
10038 | && sal.symtab != NULL | |
10039 | && b->static_trace_marker_id != NULL) | |
10040 | { | |
10041 | VEC(static_tracepoint_marker_p) *markers; | |
10042 | ||
10043 | markers | |
10044 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10045 | ||
10046 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10047 | { | |
10048 | struct symtab_and_line sal; | |
10049 | struct symbol *sym; | |
10050 | struct static_tracepoint_marker *marker; | |
10051 | ||
10052 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10053 | ||
10054 | xfree (b->static_trace_marker_id); | |
10055 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10056 | ||
10057 | warning (_("marker for static tracepoint %d (%s) not " | |
10058 | "found at previous line number"), | |
10059 | b->number, b->static_trace_marker_id); | |
10060 | ||
10061 | init_sal (&sal); | |
10062 | ||
10063 | sal.pc = marker->address; | |
10064 | ||
10065 | sal = find_pc_line (marker->address, 0); | |
10066 | sym = find_pc_sect_function (marker->address, NULL); | |
10067 | ui_out_text (uiout, "Now in "); | |
10068 | if (sym) | |
10069 | { | |
10070 | ui_out_field_string (uiout, "func", | |
10071 | SYMBOL_PRINT_NAME (sym)); | |
10072 | ui_out_text (uiout, " at "); | |
10073 | } | |
10074 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10075 | ui_out_text (uiout, ":"); | |
10076 | ||
10077 | if (ui_out_is_mi_like_p (uiout)) | |
10078 | { | |
10079 | char *fullname = symtab_to_fullname (sal.symtab); | |
10080 | ||
10081 | if (fullname) | |
10082 | ui_out_field_string (uiout, "fullname", fullname); | |
10083 | } | |
10084 | ||
10085 | ui_out_field_int (uiout, "line", sal.line); | |
10086 | ui_out_text (uiout, "\n"); | |
10087 | ||
10088 | b->line_number = sal.line; | |
10089 | ||
10090 | xfree (b->source_file); | |
10091 | if (sym) | |
10092 | b->source_file = xstrdup (sal.symtab->filename); | |
10093 | else | |
10094 | b->source_file = NULL; | |
10095 | ||
10096 | xfree (b->addr_string); | |
10097 | b->addr_string = xstrprintf ("%s:%d", | |
10098 | sal.symtab->filename, b->line_number); | |
10099 | ||
10100 | /* Might be nice to check if function changed, and warn if | |
10101 | so. */ | |
10102 | ||
10103 | release_static_tracepoint_marker (marker); | |
10104 | } | |
10105 | } | |
10106 | return sal; | |
10107 | } | |
10108 | ||
fe3f5fa8 | 10109 | static void |
0d381245 VP |
10110 | update_breakpoint_locations (struct breakpoint *b, |
10111 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
10112 | { |
10113 | int i; | |
10114 | char *s; | |
0d381245 VP |
10115 | struct bp_location *existing_locations = b->loc; |
10116 | ||
10117 | /* If there's no new locations, and all existing locations | |
10118 | are pending, don't do anything. This optimizes | |
10119 | the common case where all locations are in the same | |
10120 | shared library, that was unloaded. We'd like to | |
10121 | retain the location, so that when the library | |
10122 | is loaded again, we don't loose the enabled/disabled | |
10123 | status of the individual locations. */ | |
10124 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
10125 | return; |
10126 | ||
fe3f5fa8 VP |
10127 | b->loc = NULL; |
10128 | ||
0d381245 | 10129 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10130 | { |
0d381245 | 10131 | struct bp_location *new_loc = |
39d61571 | 10132 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10133 | |
0d381245 VP |
10134 | /* Reparse conditions, they might contain references to the |
10135 | old symtab. */ | |
10136 | if (b->cond_string != NULL) | |
10137 | { | |
10138 | struct gdb_exception e; | |
fe3f5fa8 | 10139 | |
0d381245 VP |
10140 | s = b->cond_string; |
10141 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10142 | { | |
10143 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10144 | 0); | |
10145 | } | |
10146 | if (e.reason < 0) | |
10147 | { | |
10148 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
10149 | b->number, e.message); | |
10150 | new_loc->enabled = 0; | |
10151 | } | |
10152 | } | |
fe3f5fa8 | 10153 | |
0d381245 VP |
10154 | if (b->source_file != NULL) |
10155 | xfree (b->source_file); | |
10156 | if (sals.sals[i].symtab == NULL) | |
10157 | b->source_file = NULL; | |
10158 | else | |
1b36a34b | 10159 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10160 | |
0d381245 VP |
10161 | if (b->line_number == 0) |
10162 | b->line_number = sals.sals[i].line; | |
10163 | } | |
fe3f5fa8 | 10164 | |
514f746b AR |
10165 | /* Update locations of permanent breakpoints. */ |
10166 | if (b->enable_state == bp_permanent) | |
10167 | make_breakpoint_permanent (b); | |
10168 | ||
0d381245 VP |
10169 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
10170 | { | |
10171 | struct bp_location *e = existing_locations; | |
776592bf DE |
10172 | /* If there are multiple breakpoints with the same function name, |
10173 | e.g. for inline functions, comparing function names won't work. | |
10174 | Instead compare pc addresses; this is just a heuristic as things | |
10175 | may have moved, but in practice it gives the correct answer | |
10176 | often enough until a better solution is found. */ | |
10177 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10178 | ||
0d381245 VP |
10179 | for (; e; e = e->next) |
10180 | { | |
10181 | if (!e->enabled && e->function_name) | |
10182 | { | |
10183 | struct bp_location *l = b->loc; | |
776592bf DE |
10184 | if (have_ambiguous_names) |
10185 | { | |
10186 | for (; l; l = l->next) | |
6c95b8df PA |
10187 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
10188 | l->pspace->aspace, l->address)) | |
776592bf DE |
10189 | { |
10190 | l->enabled = 0; | |
10191 | break; | |
10192 | } | |
10193 | } | |
10194 | else | |
10195 | { | |
10196 | for (; l; l = l->next) | |
10197 | if (l->function_name | |
10198 | && strcmp (e->function_name, l->function_name) == 0) | |
10199 | { | |
10200 | l->enabled = 0; | |
10201 | break; | |
10202 | } | |
10203 | } | |
0d381245 VP |
10204 | } |
10205 | } | |
10206 | } | |
fe3f5fa8 | 10207 | |
b60e7edf | 10208 | update_global_location_list (1); |
fe3f5fa8 VP |
10209 | } |
10210 | ||
c906108c SS |
10211 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
10212 | The value we return ends up being the return value from catch_errors. | |
10213 | Unused in this case. */ | |
10214 | ||
10215 | static int | |
4efb68b1 | 10216 | breakpoint_re_set_one (void *bint) |
c906108c | 10217 | { |
53a5351d JM |
10218 | /* get past catch_errs */ |
10219 | struct breakpoint *b = (struct breakpoint *) bint; | |
fe3f5fa8 VP |
10220 | int not_found = 0; |
10221 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
10222 | struct symtabs_and_lines sals = {0}; |
10223 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 10224 | char *s; |
fe3f5fa8 | 10225 | struct gdb_exception e; |
6c95b8df | 10226 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
0fb4aa4b | 10227 | int marker_spec = 0; |
c906108c SS |
10228 | |
10229 | switch (b->type) | |
10230 | { | |
10231 | case bp_none: | |
8a3fe4f8 | 10232 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 10233 | b->number); |
c906108c SS |
10234 | return 0; |
10235 | case bp_breakpoint: | |
10236 | case bp_hardware_breakpoint: | |
1042e4c0 | 10237 | case bp_tracepoint: |
7a697b8d | 10238 | case bp_fast_tracepoint: |
0fb4aa4b | 10239 | case bp_static_tracepoint: |
8bea4e01 UW |
10240 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10241 | if (b->enable_state == bp_startup_disabled) | |
10242 | return 0; | |
10243 | ||
c906108c SS |
10244 | if (b->addr_string == NULL) |
10245 | { | |
10246 | /* Anything without a string can't be re-set. */ | |
10247 | delete_breakpoint (b); | |
10248 | return 0; | |
10249 | } | |
c906108c | 10250 | |
c906108c SS |
10251 | input_radix = b->input_radix; |
10252 | s = b->addr_string; | |
6c95b8df PA |
10253 | |
10254 | save_current_space_and_thread (); | |
10255 | switch_to_program_space_and_thread (b->pspace); | |
10256 | ||
0fb4aa4b PA |
10257 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); |
10258 | ||
385d04dc | 10259 | set_language (b->language); |
fe3f5fa8 | 10260 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 10261 | { |
0fb4aa4b PA |
10262 | if (marker_spec) |
10263 | { | |
10264 | sals = decode_static_tracepoint_spec (&s); | |
10265 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10266 | { | |
10267 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10268 | sals.nelts = 1; | |
10269 | } | |
10270 | else | |
10271 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10272 | } | |
10273 | else | |
10274 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, | |
10275 | not_found_ptr); | |
fe3f5fa8 VP |
10276 | } |
10277 | if (e.reason < 0) | |
10278 | { | |
10279 | int not_found_and_ok = 0; | |
10280 | /* For pending breakpoints, it's expected that parsing | |
10281 | will fail until the right shared library is loaded. | |
10282 | User has already told to create pending breakpoints and | |
10283 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
10284 | state, then user already saw the message about that breakpoint | |
10285 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
10286 | if (not_found |
10287 | && (b->condition_not_parsed | |
10288 | || (b->loc && b->loc->shlib_disabled) | |
10289 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
10290 | not_found_and_ok = 1; |
10291 | ||
10292 | if (!not_found_and_ok) | |
c906108c | 10293 | { |
fe3f5fa8 VP |
10294 | /* We surely don't want to warn about the same breakpoint |
10295 | 10 times. One solution, implemented here, is disable | |
10296 | the breakpoint on error. Another solution would be to | |
10297 | have separate 'warning emitted' flag. Since this | |
10298 | happens only when a binary has changed, I don't know | |
10299 | which approach is better. */ | |
10300 | b->enable_state = bp_disabled; | |
10301 | throw_exception (e); | |
c906108c | 10302 | } |
fe3f5fa8 | 10303 | } |
c906108c | 10304 | |
6c95b8df | 10305 | if (!not_found) |
fe3f5fa8 | 10306 | { |
6c95b8df PA |
10307 | gdb_assert (sals.nelts == 1); |
10308 | ||
10309 | resolve_sal_pc (&sals.sals[0]); | |
10310 | if (b->condition_not_parsed && s && s[0]) | |
10311 | { | |
10312 | char *cond_string = 0; | |
10313 | int thread = -1; | |
10314 | int task = 0; | |
10315 | ||
10316 | find_condition_and_thread (s, sals.sals[0].pc, | |
10317 | &cond_string, &thread, &task); | |
10318 | if (cond_string) | |
10319 | b->cond_string = cond_string; | |
10320 | b->thread = thread; | |
10321 | b->task = task; | |
10322 | b->condition_not_parsed = 0; | |
10323 | } | |
10324 | ||
0fb4aa4b PA |
10325 | if (b->type == bp_static_tracepoint && !marker_spec) |
10326 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
10327 | ||
6c95b8df | 10328 | expanded = expand_line_sal_maybe (sals.sals[0]); |
fe3f5fa8 | 10329 | } |
6c95b8df PA |
10330 | |
10331 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 10332 | update_breakpoint_locations (b, expanded); |
c906108c SS |
10333 | break; |
10334 | ||
10335 | case bp_watchpoint: | |
10336 | case bp_hardware_watchpoint: | |
10337 | case bp_read_watchpoint: | |
10338 | case bp_access_watchpoint: | |
0b3de036 VP |
10339 | /* Watchpoint can be either on expression using entirely global variables, |
10340 | or it can be on local variables. | |
10341 | ||
10342 | Watchpoints of the first kind are never auto-deleted, and even persist | |
10343 | across program restarts. Since they can use variables from shared | |
10344 | libraries, we need to reparse expression as libraries are loaded | |
10345 | and unloaded. | |
10346 | ||
10347 | Watchpoints on local variables can also change meaning as result | |
10348 | of solib event. For example, if a watchpoint uses both a local and | |
10349 | a global variables in expression, it's a local watchpoint, but | |
10350 | unloading of a shared library will make the expression invalid. | |
10351 | This is not a very common use case, but we still re-evaluate | |
10352 | expression, to avoid surprises to the user. | |
10353 | ||
10354 | Note that for local watchpoints, we re-evaluate it only if | |
10355 | watchpoints frame id is still valid. If it's not, it means | |
10356 | the watchpoint is out of scope and will be deleted soon. In fact, | |
10357 | I'm not sure we'll ever be called in this case. | |
10358 | ||
10359 | If a local watchpoint's frame id is still valid, then | |
10360 | b->exp_valid_block is likewise valid, and we can safely use it. | |
10361 | ||
10362 | Don't do anything about disabled watchpoints, since they will | |
10363 | be reevaluated again when enabled. */ | |
a5606eee | 10364 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 10365 | break; |
c5aa993b JM |
10366 | /* We needn't really do anything to reset these, since the mask |
10367 | that requests them is unaffected by e.g., new libraries being | |
10368 | loaded. */ | |
ce78b96d | 10369 | case bp_catchpoint: |
c906108c | 10370 | break; |
c5aa993b | 10371 | |
c906108c | 10372 | default: |
a3f17187 | 10373 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 10374 | /* fall through */ |
0fd8e87f UW |
10375 | /* Delete overlay event and longjmp master breakpoints; they will be |
10376 | reset later by breakpoint_re_set. */ | |
1900040c | 10377 | case bp_overlay_event: |
0fd8e87f | 10378 | case bp_longjmp_master: |
aa7d318d | 10379 | case bp_std_terminate_master: |
186c406b | 10380 | case bp_exception_master: |
c906108c SS |
10381 | delete_breakpoint (b); |
10382 | break; | |
10383 | ||
c5aa993b JM |
10384 | /* This breakpoint is special, it's set up when the inferior |
10385 | starts and we really don't want to touch it. */ | |
c906108c SS |
10386 | case bp_shlib_event: |
10387 | ||
c4093a6a JM |
10388 | /* Like bp_shlib_event, this breakpoint type is special. |
10389 | Once it is set up, we do not want to touch it. */ | |
10390 | case bp_thread_event: | |
10391 | ||
c5aa993b JM |
10392 | /* Keep temporary breakpoints, which can be encountered when we step |
10393 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
10394 | Otherwise these should have been blown away via the cleanup chain | |
10395 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
10396 | case bp_until: |
10397 | case bp_finish: | |
10398 | case bp_watchpoint_scope: | |
10399 | case bp_call_dummy: | |
aa7d318d | 10400 | case bp_std_terminate: |
c906108c | 10401 | case bp_step_resume: |
611c83ae PA |
10402 | case bp_longjmp: |
10403 | case bp_longjmp_resume: | |
186c406b TT |
10404 | case bp_exception: |
10405 | case bp_exception_resume: | |
4efc6507 | 10406 | case bp_jit_event: |
c906108c SS |
10407 | break; |
10408 | } | |
10409 | ||
6c95b8df | 10410 | do_cleanups (cleanups); |
c906108c SS |
10411 | return 0; |
10412 | } | |
10413 | ||
69de3c6a | 10414 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 10415 | void |
69de3c6a | 10416 | breakpoint_re_set (void) |
c906108c SS |
10417 | { |
10418 | struct breakpoint *b, *temp; | |
10419 | enum language save_language; | |
10420 | int save_input_radix; | |
6c95b8df | 10421 | struct cleanup *old_chain; |
c5aa993b | 10422 | |
c906108c SS |
10423 | save_language = current_language->la_language; |
10424 | save_input_radix = input_radix; | |
6c95b8df PA |
10425 | old_chain = save_current_program_space (); |
10426 | ||
c906108c | 10427 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 10428 | { |
53a5351d | 10429 | /* Format possible error msg */ |
fe3f5fa8 | 10430 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
10431 | b->number); |
10432 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 10433 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 10434 | do_cleanups (cleanups); |
c5aa993b | 10435 | } |
c906108c SS |
10436 | set_language (save_language); |
10437 | input_radix = save_input_radix; | |
e62c965a | 10438 | |
0756c555 | 10439 | jit_breakpoint_re_set (); |
4efc6507 | 10440 | |
6c95b8df PA |
10441 | do_cleanups (old_chain); |
10442 | ||
69de3c6a | 10443 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
10444 | create_longjmp_master_breakpoint ("longjmp"); |
10445 | create_longjmp_master_breakpoint ("_longjmp"); | |
10446 | create_longjmp_master_breakpoint ("siglongjmp"); | |
10447 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 10448 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 10449 | create_exception_master_breakpoint (); |
c906108c SS |
10450 | } |
10451 | \f | |
c906108c SS |
10452 | /* Reset the thread number of this breakpoint: |
10453 | ||
10454 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 10455 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 10456 | void |
fba45db2 | 10457 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
10458 | { |
10459 | if (b->thread != -1) | |
10460 | { | |
39f77062 KB |
10461 | if (in_thread_list (inferior_ptid)) |
10462 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
10463 | |
10464 | /* We're being called after following a fork. The new fork is | |
10465 | selected as current, and unless this was a vfork will have a | |
10466 | different program space from the original thread. Reset that | |
10467 | as well. */ | |
10468 | b->loc->pspace = current_program_space; | |
c906108c SS |
10469 | } |
10470 | } | |
10471 | ||
03ac34d5 MS |
10472 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10473 | If from_tty is nonzero, it prints a message to that effect, | |
10474 | which ends with a period (no newline). */ | |
10475 | ||
c906108c | 10476 | void |
fba45db2 | 10477 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 10478 | { |
52f0bd74 | 10479 | struct breakpoint *b; |
c906108c SS |
10480 | |
10481 | if (count < 0) | |
10482 | count = 0; | |
10483 | ||
10484 | ALL_BREAKPOINTS (b) | |
10485 | if (b->number == bptnum) | |
c5aa993b | 10486 | { |
d77f58be SS |
10487 | if (is_tracepoint (b)) |
10488 | { | |
10489 | if (from_tty && count != 0) | |
10490 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
10491 | bptnum); | |
10492 | return; | |
10493 | } | |
10494 | ||
c5aa993b | 10495 | b->ignore_count = count; |
221ea385 KS |
10496 | if (from_tty) |
10497 | { | |
10498 | if (count == 0) | |
a3f17187 | 10499 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
10500 | bptnum); |
10501 | else if (count == 1) | |
a3f17187 | 10502 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10503 | bptnum); |
10504 | else | |
a3f17187 | 10505 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
10506 | count, bptnum); |
10507 | } | |
c5aa993b | 10508 | breakpoints_changed (); |
383f836e | 10509 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10510 | return; |
10511 | } | |
c906108c | 10512 | |
8a3fe4f8 | 10513 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10514 | } |
10515 | ||
b2175913 MS |
10516 | void |
10517 | make_breakpoint_silent (struct breakpoint *b) | |
10518 | { | |
10519 | /* Silence the breakpoint. */ | |
10520 | b->silent = 1; | |
10521 | } | |
10522 | ||
c906108c SS |
10523 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10524 | ||
10525 | static void | |
fba45db2 | 10526 | ignore_command (char *args, int from_tty) |
c906108c SS |
10527 | { |
10528 | char *p = args; | |
52f0bd74 | 10529 | int num; |
c906108c SS |
10530 | |
10531 | if (p == 0) | |
e2e0b3e5 | 10532 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10533 | |
c906108c | 10534 | num = get_number (&p); |
5c44784c | 10535 | if (num == 0) |
8a3fe4f8 | 10536 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10537 | if (*p == 0) |
8a3fe4f8 | 10538 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10539 | |
10540 | set_ignore_count (num, | |
10541 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10542 | from_tty); | |
221ea385 KS |
10543 | if (from_tty) |
10544 | printf_filtered ("\n"); | |
c906108c SS |
10545 | } |
10546 | \f | |
10547 | /* Call FUNCTION on each of the breakpoints | |
10548 | whose numbers are given in ARGS. */ | |
10549 | ||
10550 | static void | |
95a42b64 TT |
10551 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10552 | void *), | |
10553 | void *data) | |
c906108c | 10554 | { |
52f0bd74 | 10555 | char *p = args; |
c906108c | 10556 | char *p1; |
52f0bd74 AC |
10557 | int num; |
10558 | struct breakpoint *b, *tmp; | |
11cf8741 | 10559 | int match; |
c906108c SS |
10560 | |
10561 | if (p == 0) | |
e2e0b3e5 | 10562 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
10563 | |
10564 | while (*p) | |
10565 | { | |
11cf8741 | 10566 | match = 0; |
c906108c | 10567 | p1 = p; |
c5aa993b | 10568 | |
5c44784c JM |
10569 | num = get_number_or_range (&p1); |
10570 | if (num == 0) | |
c5aa993b | 10571 | { |
8a3fe4f8 | 10572 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10573 | } |
10574 | else | |
10575 | { | |
10576 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10577 | if (b->number == num) | |
10578 | { | |
10579 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 10580 | match = 1; |
95a42b64 | 10581 | function (b, data); |
5c44784c | 10582 | if (related_breakpoint) |
95a42b64 | 10583 | function (related_breakpoint, data); |
11cf8741 | 10584 | break; |
5c44784c | 10585 | } |
11cf8741 | 10586 | if (match == 0) |
a3f17187 | 10587 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10588 | } |
c906108c SS |
10589 | p = p1; |
10590 | } | |
10591 | } | |
10592 | ||
0d381245 VP |
10593 | static struct bp_location * |
10594 | find_location_by_number (char *number) | |
10595 | { | |
10596 | char *dot = strchr (number, '.'); | |
10597 | char *p1; | |
10598 | int bp_num; | |
10599 | int loc_num; | |
10600 | struct breakpoint *b; | |
10601 | struct bp_location *loc; | |
10602 | ||
10603 | *dot = '\0'; | |
10604 | ||
10605 | p1 = number; | |
10606 | bp_num = get_number_or_range (&p1); | |
10607 | if (bp_num == 0) | |
10608 | error (_("Bad breakpoint number '%s'"), number); | |
10609 | ||
10610 | ALL_BREAKPOINTS (b) | |
10611 | if (b->number == bp_num) | |
10612 | { | |
10613 | break; | |
10614 | } | |
10615 | ||
10616 | if (!b || b->number != bp_num) | |
10617 | error (_("Bad breakpoint number '%s'"), number); | |
10618 | ||
10619 | p1 = dot+1; | |
10620 | loc_num = get_number_or_range (&p1); | |
10621 | if (loc_num == 0) | |
10622 | error (_("Bad breakpoint location number '%s'"), number); | |
10623 | ||
10624 | --loc_num; | |
10625 | loc = b->loc; | |
10626 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
10627 | ; | |
10628 | if (!loc) | |
10629 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
10630 | ||
10631 | return loc; | |
10632 | } | |
10633 | ||
10634 | ||
1900040c MS |
10635 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10636 | If from_tty is nonzero, it prints a message to that effect, | |
10637 | which ends with a period (no newline). */ | |
10638 | ||
c906108c | 10639 | void |
fba45db2 | 10640 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10641 | { |
10642 | /* Never disable a watchpoint scope breakpoint; we want to | |
10643 | hit them when we leave scope so we can delete both the | |
10644 | watchpoint and its scope breakpoint at that time. */ | |
10645 | if (bpt->type == bp_watchpoint_scope) | |
10646 | return; | |
10647 | ||
c2c6d25f | 10648 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 10649 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
10650 | return; |
10651 | ||
b5de0fa7 | 10652 | bpt->enable_state = bp_disabled; |
c906108c | 10653 | |
b60e7edf | 10654 | update_global_location_list (0); |
c906108c | 10655 | |
383f836e | 10656 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10657 | } |
10658 | ||
95a42b64 TT |
10659 | /* A callback for map_breakpoint_numbers that calls |
10660 | disable_breakpoint. */ | |
10661 | ||
10662 | static void | |
10663 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
10664 | { | |
10665 | disable_breakpoint (b); | |
10666 | } | |
10667 | ||
c906108c | 10668 | static void |
fba45db2 | 10669 | disable_command (char *args, int from_tty) |
c906108c | 10670 | { |
52f0bd74 | 10671 | struct breakpoint *bpt; |
cc59ec59 | 10672 | |
c906108c SS |
10673 | if (args == 0) |
10674 | ALL_BREAKPOINTS (bpt) | |
10675 | switch (bpt->type) | |
c5aa993b JM |
10676 | { |
10677 | case bp_none: | |
8a3fe4f8 | 10678 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10679 | bpt->number); |
c5aa993b JM |
10680 | continue; |
10681 | case bp_breakpoint: | |
1042e4c0 | 10682 | case bp_tracepoint: |
7a697b8d | 10683 | case bp_fast_tracepoint: |
0fb4aa4b | 10684 | case bp_static_tracepoint: |
ce78b96d | 10685 | case bp_catchpoint: |
c5aa993b JM |
10686 | case bp_hardware_breakpoint: |
10687 | case bp_watchpoint: | |
10688 | case bp_hardware_watchpoint: | |
10689 | case bp_read_watchpoint: | |
10690 | case bp_access_watchpoint: | |
10691 | disable_breakpoint (bpt); | |
10692 | default: | |
10693 | continue; | |
10694 | } | |
0d381245 VP |
10695 | else if (strchr (args, '.')) |
10696 | { | |
10697 | struct bp_location *loc = find_location_by_number (args); | |
10698 | if (loc) | |
10699 | loc->enabled = 0; | |
b60e7edf | 10700 | update_global_location_list (0); |
0d381245 | 10701 | } |
c906108c | 10702 | else |
95a42b64 | 10703 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10704 | } |
10705 | ||
10706 | static void | |
fba45db2 | 10707 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10708 | { |
afe38095 | 10709 | int target_resources_ok; |
c906108c SS |
10710 | |
10711 | if (bpt->type == bp_hardware_breakpoint) | |
10712 | { | |
10713 | int i; | |
c5aa993b | 10714 | i = hw_breakpoint_used_count (); |
53a5351d | 10715 | target_resources_ok = |
d92524f1 | 10716 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10717 | i + 1, 0); |
c906108c | 10718 | if (target_resources_ok == 0) |
8a3fe4f8 | 10719 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10720 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10721 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10722 | } |
10723 | ||
cc60f2e3 | 10724 | if (is_watchpoint (bpt)) |
c906108c | 10725 | { |
dde02812 ES |
10726 | struct gdb_exception e; |
10727 | ||
10728 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10729 | { |
dde02812 | 10730 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10731 | } |
dde02812 | 10732 | if (e.reason < 0) |
c5aa993b | 10733 | { |
dde02812 ES |
10734 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10735 | bpt->number); | |
10736 | return; | |
c5aa993b | 10737 | } |
c906108c | 10738 | } |
0101ce28 | 10739 | |
b4c291bb KH |
10740 | if (bpt->enable_state != bp_permanent) |
10741 | bpt->enable_state = bp_enabled; | |
10742 | bpt->disposition = disposition; | |
b60e7edf | 10743 | update_global_location_list (1); |
b4c291bb KH |
10744 | breakpoints_changed (); |
10745 | ||
383f836e | 10746 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10747 | } |
10748 | ||
fe3f5fa8 | 10749 | |
c906108c | 10750 | void |
fba45db2 | 10751 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10752 | { |
10753 | do_enable_breakpoint (bpt, bpt->disposition); | |
10754 | } | |
10755 | ||
95a42b64 TT |
10756 | /* A callback for map_breakpoint_numbers that calls |
10757 | enable_breakpoint. */ | |
10758 | ||
10759 | static void | |
10760 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10761 | { | |
10762 | enable_breakpoint (b); | |
10763 | } | |
10764 | ||
c906108c SS |
10765 | /* The enable command enables the specified breakpoints (or all defined |
10766 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10767 | in stopping the inferior. */ |
c906108c | 10768 | |
c906108c | 10769 | static void |
fba45db2 | 10770 | enable_command (char *args, int from_tty) |
c906108c | 10771 | { |
52f0bd74 | 10772 | struct breakpoint *bpt; |
cc59ec59 | 10773 | |
c906108c SS |
10774 | if (args == 0) |
10775 | ALL_BREAKPOINTS (bpt) | |
10776 | switch (bpt->type) | |
c5aa993b JM |
10777 | { |
10778 | case bp_none: | |
8a3fe4f8 | 10779 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10780 | bpt->number); |
c5aa993b JM |
10781 | continue; |
10782 | case bp_breakpoint: | |
1042e4c0 | 10783 | case bp_tracepoint: |
7a697b8d | 10784 | case bp_fast_tracepoint: |
0fb4aa4b | 10785 | case bp_static_tracepoint: |
ce78b96d | 10786 | case bp_catchpoint: |
c5aa993b JM |
10787 | case bp_hardware_breakpoint: |
10788 | case bp_watchpoint: | |
10789 | case bp_hardware_watchpoint: | |
10790 | case bp_read_watchpoint: | |
10791 | case bp_access_watchpoint: | |
10792 | enable_breakpoint (bpt); | |
10793 | default: | |
10794 | continue; | |
10795 | } | |
0d381245 VP |
10796 | else if (strchr (args, '.')) |
10797 | { | |
10798 | struct bp_location *loc = find_location_by_number (args); | |
10799 | if (loc) | |
10800 | loc->enabled = 1; | |
b60e7edf | 10801 | update_global_location_list (1); |
0d381245 | 10802 | } |
c906108c | 10803 | else |
95a42b64 | 10804 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10805 | } |
10806 | ||
10807 | static void | |
95a42b64 | 10808 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10809 | { |
b5de0fa7 | 10810 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10811 | } |
10812 | ||
c906108c | 10813 | static void |
fba45db2 | 10814 | enable_once_command (char *args, int from_tty) |
c906108c | 10815 | { |
95a42b64 | 10816 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10817 | } |
10818 | ||
10819 | static void | |
95a42b64 | 10820 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10821 | { |
b5de0fa7 | 10822 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10823 | } |
10824 | ||
c906108c | 10825 | static void |
fba45db2 | 10826 | enable_delete_command (char *args, int from_tty) |
c906108c | 10827 | { |
95a42b64 | 10828 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10829 | } |
10830 | \f | |
fa8d40ab JJ |
10831 | static void |
10832 | set_breakpoint_cmd (char *args, int from_tty) | |
10833 | { | |
10834 | } | |
10835 | ||
10836 | static void | |
10837 | show_breakpoint_cmd (char *args, int from_tty) | |
10838 | { | |
10839 | } | |
10840 | ||
1f3b5d1b PP |
10841 | /* Invalidate last known value of any hardware watchpoint if |
10842 | the memory which that value represents has been written to by | |
10843 | GDB itself. */ | |
10844 | ||
10845 | static void | |
10846 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10847 | const bfd_byte *data) | |
10848 | { | |
10849 | struct breakpoint *bp; | |
10850 | ||
10851 | ALL_BREAKPOINTS (bp) | |
10852 | if (bp->enable_state == bp_enabled | |
10853 | && bp->type == bp_hardware_watchpoint | |
10854 | && bp->val_valid && bp->val) | |
10855 | { | |
10856 | struct bp_location *loc; | |
10857 | ||
10858 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10859 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10860 | && loc->address + loc->length > addr | |
10861 | && addr + len > loc->address) | |
10862 | { | |
10863 | value_free (bp->val); | |
10864 | bp->val = NULL; | |
10865 | bp->val_valid = 0; | |
10866 | } | |
10867 | } | |
10868 | } | |
10869 | ||
c906108c SS |
10870 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10871 | ||
10872 | struct symtabs_and_lines | |
fba45db2 | 10873 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10874 | { |
10875 | struct symtabs_and_lines sals; | |
cc59ec59 | 10876 | |
c906108c | 10877 | if (string == 0) |
8a3fe4f8 | 10878 | error (_("Empty line specification.")); |
c906108c SS |
10879 | if (default_breakpoint_valid) |
10880 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10881 | default_breakpoint_symtab, |
10882 | default_breakpoint_line, | |
68219205 | 10883 | (char ***) NULL, NULL); |
c906108c SS |
10884 | else |
10885 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10886 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10887 | if (*string) |
8a3fe4f8 | 10888 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10889 | return sals; |
10890 | } | |
8181d85f DJ |
10891 | |
10892 | /* Create and insert a raw software breakpoint at PC. Return an | |
10893 | identifier, which should be used to remove the breakpoint later. | |
10894 | In general, places which call this should be using something on the | |
10895 | breakpoint chain instead; this function should be eliminated | |
10896 | someday. */ | |
10897 | ||
10898 | void * | |
6c95b8df PA |
10899 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10900 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10901 | { |
10902 | struct bp_target_info *bp_tgt; | |
10903 | ||
6c95b8df | 10904 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10905 | |
6c95b8df | 10906 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10907 | bp_tgt->placed_address = pc; |
6c95b8df | 10908 | |
a6d9a66e | 10909 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10910 | { |
10911 | /* Could not insert the breakpoint. */ | |
10912 | xfree (bp_tgt); | |
10913 | return NULL; | |
10914 | } | |
10915 | ||
10916 | return bp_tgt; | |
10917 | } | |
10918 | ||
10919 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
10920 | ||
10921 | int | |
a6d9a66e | 10922 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
10923 | { |
10924 | struct bp_target_info *bp_tgt = bp; | |
10925 | int ret; | |
10926 | ||
a6d9a66e | 10927 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
10928 | xfree (bp_tgt); |
10929 | ||
10930 | return ret; | |
10931 | } | |
10932 | ||
10933 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
10934 | ||
10935 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 10936 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
10937 | |
10938 | /* Create and insert a breakpoint for software single step. */ | |
10939 | ||
10940 | void | |
6c95b8df PA |
10941 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
10942 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
10943 | { |
10944 | void **bpt_p; | |
10945 | ||
10946 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
10947 | { |
10948 | bpt_p = &single_step_breakpoints[0]; | |
10949 | single_step_gdbarch[0] = gdbarch; | |
10950 | } | |
8181d85f DJ |
10951 | else |
10952 | { | |
10953 | gdb_assert (single_step_breakpoints[1] == NULL); | |
10954 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 10955 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
10956 | } |
10957 | ||
10958 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
10959 | to only create the breakpoints once, and actually put them on the | |
10960 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
10961 | adjust the addresses each time they were needed. Doing this requires | |
10962 | corresponding changes elsewhere where single step breakpoints are | |
10963 | handled, however. So, for now, we use this. */ | |
10964 | ||
6c95b8df | 10965 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 10966 | if (*bpt_p == NULL) |
5af949e3 UW |
10967 | error (_("Could not insert single-step breakpoint at %s"), |
10968 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
10969 | } |
10970 | ||
f02253f1 HZ |
10971 | /* Check if the breakpoints used for software single stepping |
10972 | were inserted or not. */ | |
10973 | ||
10974 | int | |
10975 | single_step_breakpoints_inserted (void) | |
10976 | { | |
10977 | return (single_step_breakpoints[0] != NULL | |
10978 | || single_step_breakpoints[1] != NULL); | |
10979 | } | |
10980 | ||
8181d85f DJ |
10981 | /* Remove and delete any breakpoints used for software single step. */ |
10982 | ||
10983 | void | |
10984 | remove_single_step_breakpoints (void) | |
10985 | { | |
10986 | gdb_assert (single_step_breakpoints[0] != NULL); | |
10987 | ||
10988 | /* See insert_single_step_breakpoint for more about this deprecated | |
10989 | call. */ | |
a6d9a66e UW |
10990 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
10991 | single_step_breakpoints[0]); | |
10992 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
10993 | single_step_breakpoints[0] = NULL; |
10994 | ||
10995 | if (single_step_breakpoints[1] != NULL) | |
10996 | { | |
a6d9a66e UW |
10997 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
10998 | single_step_breakpoints[1]); | |
10999 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11000 | single_step_breakpoints[1] = NULL; |
11001 | } | |
11002 | } | |
11003 | ||
d03285ec UW |
11004 | /* Delete software single step breakpoints without removing them from |
11005 | the inferior. This is intended to be used if the inferior's address | |
11006 | space where they were inserted is already gone, e.g. after exit or | |
11007 | exec. */ | |
11008 | ||
11009 | void | |
11010 | cancel_single_step_breakpoints (void) | |
11011 | { | |
11012 | int i; | |
11013 | ||
11014 | for (i = 0; i < 2; i++) | |
11015 | if (single_step_breakpoints[i]) | |
11016 | { | |
11017 | xfree (single_step_breakpoints[i]); | |
11018 | single_step_breakpoints[i] = NULL; | |
11019 | single_step_gdbarch[i] = NULL; | |
11020 | } | |
11021 | } | |
11022 | ||
11023 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11024 | removing them. */ | |
11025 | ||
11026 | static void | |
11027 | detach_single_step_breakpoints (void) | |
11028 | { | |
11029 | int i; | |
11030 | ||
11031 | for (i = 0; i < 2; i++) | |
11032 | if (single_step_breakpoints[i]) | |
11033 | target_remove_breakpoint (single_step_gdbarch[i], | |
11034 | single_step_breakpoints[i]); | |
11035 | } | |
11036 | ||
1aafd4da UW |
11037 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
11038 | ||
11039 | static int | |
cc59ec59 MS |
11040 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11041 | CORE_ADDR pc) | |
1aafd4da UW |
11042 | { |
11043 | int i; | |
11044 | ||
11045 | for (i = 0; i < 2; i++) | |
11046 | { | |
11047 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11048 | if (bp_tgt |
11049 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11050 | bp_tgt->placed_address, | |
11051 | aspace, pc)) | |
1aafd4da UW |
11052 | return 1; |
11053 | } | |
11054 | ||
11055 | return 0; | |
11056 | } | |
11057 | ||
a96d9b2e SDJ |
11058 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11059 | non-zero otherwise. */ | |
11060 | static int | |
11061 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11062 | { | |
11063 | if (syscall_catchpoint_p (bp) | |
11064 | && bp->enable_state != bp_disabled | |
11065 | && bp->enable_state != bp_call_disabled) | |
11066 | return 1; | |
11067 | else | |
11068 | return 0; | |
11069 | } | |
11070 | ||
11071 | int | |
11072 | catch_syscall_enabled (void) | |
11073 | { | |
11074 | struct inferior *inf = current_inferior (); | |
11075 | ||
11076 | return inf->total_syscalls_count != 0; | |
11077 | } | |
11078 | ||
11079 | int | |
11080 | catching_syscall_number (int syscall_number) | |
11081 | { | |
11082 | struct breakpoint *bp; | |
11083 | ||
11084 | ALL_BREAKPOINTS (bp) | |
11085 | if (is_syscall_catchpoint_enabled (bp)) | |
11086 | { | |
11087 | if (bp->syscalls_to_be_caught) | |
11088 | { | |
11089 | int i, iter; | |
11090 | for (i = 0; | |
11091 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11092 | i++) | |
11093 | if (syscall_number == iter) | |
11094 | return 1; | |
11095 | } | |
11096 | else | |
11097 | return 1; | |
11098 | } | |
11099 | ||
11100 | return 0; | |
11101 | } | |
11102 | ||
11103 | /* Complete syscall names. Used by "catch syscall". */ | |
11104 | static char ** | |
11105 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11106 | char *text, char *word) | |
11107 | { | |
11108 | const char **list = get_syscall_names (); | |
cc59ec59 | 11109 | |
a96d9b2e SDJ |
11110 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); |
11111 | } | |
11112 | ||
1042e4c0 SS |
11113 | /* Tracepoint-specific operations. */ |
11114 | ||
11115 | /* Set tracepoint count to NUM. */ | |
11116 | static void | |
11117 | set_tracepoint_count (int num) | |
11118 | { | |
11119 | tracepoint_count = num; | |
4fa62494 | 11120 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11121 | } |
11122 | ||
11123 | void | |
11124 | trace_command (char *arg, int from_tty) | |
11125 | { | |
8cdf0e15 VP |
11126 | if (create_breakpoint (get_current_arch (), |
11127 | arg, | |
11128 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11129 | 0 /* tempflag */, |
11130 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11131 | 0 /* Ignore count */, |
11132 | pending_break_support, | |
11133 | NULL, | |
11134 | from_tty, | |
84f4c1fe PM |
11135 | 1 /* enabled */, |
11136 | 0 /* internal */)) | |
fd9b8c24 | 11137 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11138 | } |
11139 | ||
7a697b8d SS |
11140 | void |
11141 | ftrace_command (char *arg, int from_tty) | |
11142 | { | |
8cdf0e15 VP |
11143 | if (create_breakpoint (get_current_arch (), |
11144 | arg, | |
11145 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11146 | 0 /* tempflag */, |
11147 | bp_fast_tracepoint /* type_wanted */, | |
11148 | 0 /* Ignore count */, | |
11149 | pending_break_support, | |
11150 | NULL, | |
11151 | from_tty, | |
84f4c1fe PM |
11152 | 1 /* enabled */, |
11153 | 0 /* internal */)) | |
0fb4aa4b PA |
11154 | set_tracepoint_count (breakpoint_count); |
11155 | } | |
11156 | ||
11157 | /* strace command implementation. Creates a static tracepoint. */ | |
11158 | ||
11159 | void | |
11160 | strace_command (char *arg, int from_tty) | |
11161 | { | |
11162 | if (create_breakpoint (get_current_arch (), | |
11163 | arg, | |
11164 | NULL, 0, 1 /* parse arg */, | |
11165 | 0 /* tempflag */, | |
11166 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11167 | 0 /* Ignore count */, |
11168 | pending_break_support, | |
11169 | NULL, | |
11170 | from_tty, | |
84f4c1fe PM |
11171 | 1 /* enabled */, |
11172 | 0 /* internal */)) | |
fd9b8c24 | 11173 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11174 | } |
11175 | ||
409873ef SS |
11176 | /* Set up a fake reader function that gets command lines from a linked |
11177 | list that was acquired during tracepoint uploading. */ | |
11178 | ||
11179 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11180 | static int next_cmd; |
409873ef SS |
11181 | |
11182 | static char * | |
11183 | read_uploaded_action (void) | |
11184 | { | |
11185 | char *rslt; | |
11186 | ||
3149d8c1 | 11187 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11188 | |
3149d8c1 | 11189 | next_cmd++; |
409873ef SS |
11190 | |
11191 | return rslt; | |
11192 | } | |
11193 | ||
00bf0b85 SS |
11194 | /* Given information about a tracepoint as recorded on a target (which |
11195 | can be either a live system or a trace file), attempt to create an | |
11196 | equivalent GDB tracepoint. This is not a reliable process, since | |
11197 | the target does not necessarily have all the information used when | |
11198 | the tracepoint was originally defined. */ | |
11199 | ||
11200 | struct breakpoint * | |
11201 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11202 | { |
409873ef | 11203 | char *addr_str, small_buf[100]; |
d5551862 | 11204 | struct breakpoint *tp; |
fd9b8c24 | 11205 | |
409873ef SS |
11206 | if (utp->at_string) |
11207 | addr_str = utp->at_string; | |
11208 | else | |
11209 | { | |
11210 | /* In the absence of a source location, fall back to raw | |
11211 | address. Since there is no way to confirm that the address | |
11212 | means the same thing as when the trace was started, warn the | |
11213 | user. */ | |
11214 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
11215 | utp->number); | |
11216 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11217 | addr_str = small_buf; | |
11218 | } | |
11219 | ||
11220 | /* There's not much we can do with a sequence of bytecodes. */ | |
11221 | if (utp->cond && !utp->cond_string) | |
11222 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
11223 | utp->number); | |
d5551862 | 11224 | |
8cdf0e15 | 11225 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11226 | addr_str, |
11227 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11228 | 0 /* tempflag */, |
0fb4aa4b | 11229 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11230 | 0 /* Ignore count */, |
11231 | pending_break_support, | |
11232 | NULL, | |
11233 | 0 /* from_tty */, | |
84f4c1fe PM |
11234 | utp->enabled /* enabled */, |
11235 | 0 /* internal */)) | |
fd9b8c24 PA |
11236 | return NULL; |
11237 | ||
00bf0b85 SS |
11238 | set_tracepoint_count (breakpoint_count); |
11239 | ||
409873ef | 11240 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11241 | tp = get_tracepoint (tracepoint_count); |
11242 | gdb_assert (tp != NULL); | |
d5551862 | 11243 | |
00bf0b85 SS |
11244 | if (utp->pass > 0) |
11245 | { | |
409873ef | 11246 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11247 | |
409873ef | 11248 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11249 | } |
11250 | ||
409873ef SS |
11251 | /* If we have uploaded versions of the original commands, set up a |
11252 | special-purpose "reader" function and call the usual command line | |
11253 | reader, then pass the result to the breakpoint command-setting | |
11254 | function. */ | |
3149d8c1 | 11255 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11256 | { |
409873ef | 11257 | struct command_line *cmd_list; |
00bf0b85 | 11258 | |
409873ef | 11259 | this_utp = utp; |
3149d8c1 | 11260 | next_cmd = 0; |
d5551862 | 11261 | |
409873ef SS |
11262 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
11263 | ||
11264 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 11265 | } |
3149d8c1 SS |
11266 | else if (!VEC_empty (char_ptr, utp->actions) |
11267 | || !VEC_empty (char_ptr, utp->step_actions)) | |
409873ef SS |
11268 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), |
11269 | utp->number); | |
00bf0b85 SS |
11270 | |
11271 | return tp; | |
11272 | } | |
11273 | ||
1042e4c0 SS |
11274 | /* Print information on tracepoint number TPNUM_EXP, or all if |
11275 | omitted. */ | |
11276 | ||
11277 | static void | |
11278 | tracepoints_info (char *tpnum_exp, int from_tty) | |
11279 | { | |
d77f58be SS |
11280 | int tpnum = -1, num_printed; |
11281 | ||
11282 | if (tpnum_exp) | |
11283 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 11284 | |
d77f58be SS |
11285 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
11286 | ||
11287 | if (num_printed == 0) | |
1042e4c0 | 11288 | { |
d77f58be SS |
11289 | if (tpnum == -1) |
11290 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
11291 | else | |
11292 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 11293 | } |
ad443146 SS |
11294 | |
11295 | default_collect_info (); | |
1042e4c0 SS |
11296 | } |
11297 | ||
11298 | /* The 'enable trace' command enables tracepoints. | |
11299 | Not supported by all targets. */ | |
11300 | static void | |
11301 | enable_trace_command (char *args, int from_tty) | |
11302 | { | |
11303 | enable_command (args, from_tty); | |
11304 | } | |
11305 | ||
11306 | /* The 'disable trace' command disables tracepoints. | |
11307 | Not supported by all targets. */ | |
11308 | static void | |
11309 | disable_trace_command (char *args, int from_tty) | |
11310 | { | |
11311 | disable_command (args, from_tty); | |
11312 | } | |
11313 | ||
11314 | /* Remove a tracepoint (or all if no argument) */ | |
11315 | static void | |
11316 | delete_trace_command (char *arg, int from_tty) | |
11317 | { | |
11318 | struct breakpoint *b, *temp; | |
11319 | ||
11320 | dont_repeat (); | |
11321 | ||
11322 | if (arg == 0) | |
11323 | { | |
11324 | int breaks_to_delete = 0; | |
11325 | ||
11326 | /* Delete all breakpoints if no argument. | |
11327 | Do not delete internal or call-dummy breakpoints, these | |
11328 | have to be deleted with an explicit breakpoint number argument. */ | |
11329 | ALL_TRACEPOINTS (b) | |
11330 | { | |
11331 | if (b->number >= 0) | |
11332 | { | |
11333 | breaks_to_delete = 1; | |
11334 | break; | |
11335 | } | |
11336 | } | |
11337 | ||
11338 | /* Ask user only if there are some breakpoints to delete. */ | |
11339 | if (!from_tty | |
11340 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
11341 | { | |
11342 | ALL_BREAKPOINTS_SAFE (b, temp) | |
11343 | { | |
d77f58be | 11344 | if (is_tracepoint (b) |
059fb39f | 11345 | && b->number >= 0) |
1042e4c0 SS |
11346 | delete_breakpoint (b); |
11347 | } | |
11348 | } | |
11349 | } | |
11350 | else | |
95a42b64 | 11351 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
11352 | } |
11353 | ||
11354 | /* Set passcount for tracepoint. | |
11355 | ||
11356 | First command argument is passcount, second is tracepoint number. | |
11357 | If tracepoint number omitted, apply to most recently defined. | |
11358 | Also accepts special argument "all". */ | |
11359 | ||
11360 | static void | |
11361 | trace_pass_command (char *args, int from_tty) | |
11362 | { | |
11363 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
11364 | unsigned int count; | |
11365 | int all = 0; | |
11366 | ||
11367 | if (args == 0 || *args == 0) | |
11368 | error (_("passcount command requires an argument (count + optional TP num)")); | |
11369 | ||
11370 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
11371 | ||
11372 | while (*args && isspace ((int) *args)) | |
11373 | args++; | |
11374 | ||
11375 | if (*args && strncasecmp (args, "all", 3) == 0) | |
11376 | { | |
11377 | args += 3; /* Skip special argument "all". */ | |
11378 | all = 1; | |
11379 | if (*args) | |
11380 | error (_("Junk at end of arguments.")); | |
11381 | } | |
11382 | else | |
11383 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
11384 | ||
11385 | do | |
11386 | { | |
11387 | if (t1) | |
11388 | { | |
11389 | ALL_TRACEPOINTS (t2) | |
11390 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
11391 | { | |
11392 | t2->pass_count = count; | |
11393 | observer_notify_tracepoint_modified (t2->number); | |
11394 | if (from_tty) | |
11395 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
11396 | t2->number, count); | |
11397 | } | |
11398 | if (! all && *args) | |
11399 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
11400 | } | |
11401 | } | |
11402 | while (*args); | |
11403 | } | |
11404 | ||
11405 | struct breakpoint * | |
11406 | get_tracepoint (int num) | |
11407 | { | |
11408 | struct breakpoint *t; | |
11409 | ||
11410 | ALL_TRACEPOINTS (t) | |
11411 | if (t->number == num) | |
11412 | return t; | |
11413 | ||
11414 | return NULL; | |
11415 | } | |
11416 | ||
d5551862 SS |
11417 | /* Find the tracepoint with the given target-side number (which may be |
11418 | different from the tracepoint number after disconnecting and | |
11419 | reconnecting). */ | |
11420 | ||
11421 | struct breakpoint * | |
11422 | get_tracepoint_by_number_on_target (int num) | |
11423 | { | |
11424 | struct breakpoint *t; | |
11425 | ||
11426 | ALL_TRACEPOINTS (t) | |
11427 | if (t->number_on_target == num) | |
11428 | return t; | |
11429 | ||
11430 | return NULL; | |
11431 | } | |
11432 | ||
1042e4c0 SS |
11433 | /* Utility: parse a tracepoint number and look it up in the list. |
11434 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
11435 | if OPTIONAL_P is true, then if the argument is missing, the most | |
11436 | recent tracepoint (tracepoint_count) is returned. */ | |
11437 | struct breakpoint * | |
11438 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
11439 | { | |
11440 | extern int tracepoint_count; | |
11441 | struct breakpoint *t; | |
11442 | int tpnum; | |
11443 | char *instring = arg == NULL ? NULL : *arg; | |
11444 | ||
11445 | if (arg == NULL || *arg == NULL || ! **arg) | |
11446 | { | |
11447 | if (optional_p) | |
11448 | tpnum = tracepoint_count; | |
11449 | else | |
11450 | error_no_arg (_("tracepoint number")); | |
11451 | } | |
11452 | else | |
11453 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
11454 | ||
11455 | if (tpnum <= 0) | |
11456 | { | |
11457 | if (instring && *instring) | |
11458 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
11459 | instring); | |
11460 | else | |
11461 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
11462 | return NULL; | |
11463 | } | |
11464 | ||
11465 | ALL_TRACEPOINTS (t) | |
11466 | if (t->number == tpnum) | |
11467 | { | |
11468 | return t; | |
11469 | } | |
11470 | ||
11471 | /* FIXME: if we are in the middle of a range we don't want to give | |
11472 | a message. The current interface to get_number_or_range doesn't | |
11473 | allow us to discover this. */ | |
11474 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
11475 | return NULL; | |
11476 | } | |
11477 | ||
6149aea9 PA |
11478 | /* Save information on user settable breakpoints (watchpoints, etc) to |
11479 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
11480 | on each breakpoint and only include the ones for which it returns | |
11481 | non-zero. */ | |
11482 | ||
1042e4c0 | 11483 | static void |
6149aea9 PA |
11484 | save_breakpoints (char *filename, int from_tty, |
11485 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
11486 | { |
11487 | struct breakpoint *tp; | |
6149aea9 | 11488 | int any = 0; |
a7bdde9e | 11489 | char *pathname; |
1042e4c0 | 11490 | struct cleanup *cleanup; |
a7bdde9e | 11491 | struct ui_file *fp; |
6149aea9 | 11492 | int extra_trace_bits = 0; |
1042e4c0 | 11493 | |
6149aea9 PA |
11494 | if (filename == 0 || *filename == 0) |
11495 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
11496 | |
11497 | /* See if we have anything to save. */ | |
6149aea9 | 11498 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11499 | { |
6149aea9 | 11500 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11501 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 PA |
11502 | continue; |
11503 | ||
11504 | /* If we have a filter, only save the breakpoints it accepts. */ | |
11505 | if (filter && !filter (tp)) | |
11506 | continue; | |
11507 | ||
11508 | any = 1; | |
11509 | ||
11510 | if (is_tracepoint (tp)) | |
11511 | { | |
11512 | extra_trace_bits = 1; | |
11513 | ||
11514 | /* We can stop searching. */ | |
11515 | break; | |
11516 | } | |
1042e4c0 | 11517 | } |
6149aea9 PA |
11518 | |
11519 | if (!any) | |
1042e4c0 | 11520 | { |
6149aea9 | 11521 | warning (_("Nothing to save.")); |
1042e4c0 SS |
11522 | return; |
11523 | } | |
11524 | ||
6149aea9 | 11525 | pathname = tilde_expand (filename); |
1042e4c0 | 11526 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11527 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11528 | if (!fp) |
6149aea9 PA |
11529 | error (_("Unable to open file '%s' for saving (%s)"), |
11530 | filename, safe_strerror (errno)); | |
a7bdde9e | 11531 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11532 | |
6149aea9 PA |
11533 | if (extra_trace_bits) |
11534 | save_trace_state_variables (fp); | |
8bf6485c | 11535 | |
6149aea9 | 11536 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11537 | { |
6149aea9 | 11538 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11539 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 | 11540 | continue; |
8bf6485c | 11541 | |
6149aea9 PA |
11542 | /* If we have a filter, only save the breakpoints it accepts. */ |
11543 | if (filter && !filter (tp)) | |
11544 | continue; | |
11545 | ||
11546 | if (tp->ops != NULL) | |
11547 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11548 | else |
11549 | { | |
6149aea9 PA |
11550 | if (tp->type == bp_fast_tracepoint) |
11551 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
11552 | if (tp->type == bp_static_tracepoint) |
11553 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
11554 | else if (tp->type == bp_tracepoint) |
11555 | fprintf_unfiltered (fp, "trace"); | |
11556 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11557 | fprintf_unfiltered (fp, "tbreak"); | |
11558 | else if (tp->type == bp_breakpoint) | |
11559 | fprintf_unfiltered (fp, "break"); | |
11560 | else if (tp->type == bp_hardware_breakpoint | |
11561 | && tp->disposition == disp_del) | |
11562 | fprintf_unfiltered (fp, "thbreak"); | |
11563 | else if (tp->type == bp_hardware_breakpoint) | |
11564 | fprintf_unfiltered (fp, "hbreak"); | |
11565 | else if (tp->type == bp_watchpoint) | |
11566 | fprintf_unfiltered (fp, "watch"); | |
11567 | else if (tp->type == bp_hardware_watchpoint) | |
11568 | fprintf_unfiltered (fp, "watch"); | |
11569 | else if (tp->type == bp_read_watchpoint) | |
11570 | fprintf_unfiltered (fp, "rwatch"); | |
11571 | else if (tp->type == bp_access_watchpoint) | |
11572 | fprintf_unfiltered (fp, "awatch"); | |
11573 | else | |
11574 | internal_error (__FILE__, __LINE__, | |
11575 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11576 | ||
11577 | if (tp->exp_string) | |
11578 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
11579 | else if (tp->addr_string) | |
11580 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
11581 | else | |
11582 | { | |
11583 | char tmp[40]; | |
11584 | ||
11585 | sprintf_vma (tmp, tp->loc->address); | |
11586 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
11587 | } | |
1042e4c0 SS |
11588 | } |
11589 | ||
6149aea9 PA |
11590 | if (tp->thread != -1) |
11591 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
11592 | ||
11593 | if (tp->task != 0) | |
11594 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
11595 | |
11596 | fprintf_unfiltered (fp, "\n"); | |
11597 | ||
6149aea9 PA |
11598 | /* Note, we can't rely on tp->number for anything, as we can't |
11599 | assume the recreated breakpoint numbers will match. Use $bpnum | |
11600 | instead. */ | |
11601 | ||
11602 | if (tp->cond_string) | |
11603 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
11604 | ||
11605 | if (tp->ignore_count) | |
11606 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
11607 | ||
1042e4c0 | 11608 | if (tp->pass_count) |
a7bdde9e | 11609 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 11610 | |
a7bdde9e | 11611 | if (tp->commands) |
1042e4c0 | 11612 | { |
a7bdde9e VP |
11613 | volatile struct gdb_exception ex; |
11614 | ||
6149aea9 | 11615 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
11616 | |
11617 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 11618 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 11619 | { |
9add0f1b | 11620 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
11621 | } |
11622 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 11623 | |
a7bdde9e VP |
11624 | if (ex.reason < 0) |
11625 | throw_exception (ex); | |
1042e4c0 | 11626 | |
a7bdde9e | 11627 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 11628 | } |
6149aea9 PA |
11629 | |
11630 | if (tp->enable_state == bp_disabled) | |
11631 | fprintf_unfiltered (fp, "disable\n"); | |
11632 | ||
11633 | /* If this is a multi-location breakpoint, check if the locations | |
11634 | should be individually disabled. Watchpoint locations are | |
11635 | special, and not user visible. */ | |
11636 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
11637 | { | |
11638 | struct bp_location *loc; | |
11639 | int n = 1; | |
11640 | ||
11641 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
11642 | if (!loc->enabled) | |
11643 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
11644 | } | |
1042e4c0 | 11645 | } |
8bf6485c | 11646 | |
6149aea9 | 11647 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
11648 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
11649 | ||
1042e4c0 SS |
11650 | do_cleanups (cleanup); |
11651 | if (from_tty) | |
6149aea9 PA |
11652 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
11653 | } | |
11654 | ||
11655 | /* The `save breakpoints' command. */ | |
11656 | ||
11657 | static void | |
11658 | save_breakpoints_command (char *args, int from_tty) | |
11659 | { | |
11660 | save_breakpoints (args, from_tty, NULL); | |
11661 | } | |
11662 | ||
11663 | /* The `save tracepoints' command. */ | |
11664 | ||
11665 | static void | |
11666 | save_tracepoints_command (char *args, int from_tty) | |
11667 | { | |
11668 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
11669 | } |
11670 | ||
11671 | /* Create a vector of all tracepoints. */ | |
11672 | ||
11673 | VEC(breakpoint_p) * | |
11674 | all_tracepoints () | |
11675 | { | |
11676 | VEC(breakpoint_p) *tp_vec = 0; | |
11677 | struct breakpoint *tp; | |
11678 | ||
11679 | ALL_TRACEPOINTS (tp) | |
11680 | { | |
11681 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
11682 | } | |
11683 | ||
11684 | return tp_vec; | |
11685 | } | |
11686 | ||
c906108c | 11687 | \f |
31e2b00f AS |
11688 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
11689 | It is defined as a macro to prevent duplication. | |
11690 | COMMAND should be a string constant containing the name of the command. */ | |
11691 | #define BREAK_ARGS_HELP(command) \ | |
11692 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
11693 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
11694 | If a line number is specified, break at start of code for that line.\n\ | |
11695 | If a function is specified, break at start of code for that function.\n\ | |
11696 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
11697 | With no LOCATION, uses current execution address of the selected\n\ |
11698 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
11699 | \n\ |
11700 | THREADNUM is the number from \"info threads\".\n\ | |
11701 | CONDITION is a boolean expression.\n\ | |
11702 | \n\ | |
d41c0fc8 PA |
11703 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
11704 | conditions are different.\n\ | |
31e2b00f AS |
11705 | \n\ |
11706 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
11707 | ||
44feb3ce TT |
11708 | /* List of subcommands for "catch". */ |
11709 | static struct cmd_list_element *catch_cmdlist; | |
11710 | ||
11711 | /* List of subcommands for "tcatch". */ | |
11712 | static struct cmd_list_element *tcatch_cmdlist; | |
11713 | ||
11714 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
11715 | lists, and pass some additional user data to the command function. */ | |
11716 | static void | |
11717 | add_catch_command (char *name, char *docstring, | |
11718 | void (*sfunc) (char *args, int from_tty, | |
11719 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
11720 | char **(*completer) (struct cmd_list_element *cmd, |
11721 | char *text, char *word), | |
44feb3ce TT |
11722 | void *user_data_catch, |
11723 | void *user_data_tcatch) | |
11724 | { | |
11725 | struct cmd_list_element *command; | |
11726 | ||
11727 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11728 | &catch_cmdlist); | |
11729 | set_cmd_sfunc (command, sfunc); | |
11730 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 11731 | set_cmd_completer (command, completer); |
44feb3ce TT |
11732 | |
11733 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11734 | &tcatch_cmdlist); | |
11735 | set_cmd_sfunc (command, sfunc); | |
11736 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 11737 | set_cmd_completer (command, completer); |
44feb3ce TT |
11738 | } |
11739 | ||
6c95b8df | 11740 | static void |
a79b8f6e | 11741 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 11742 | { |
6c95b8df PA |
11743 | inf->total_syscalls_count = 0; |
11744 | inf->any_syscall_count = 0; | |
11745 | VEC_free (int, inf->syscalls_counts); | |
11746 | } | |
11747 | ||
6149aea9 PA |
11748 | static void |
11749 | save_command (char *arg, int from_tty) | |
11750 | { | |
11751 | printf_unfiltered (_("\ | |
11752 | \"save\" must be followed by the name of a save subcommand.\n")); | |
11753 | help_list (save_cmdlist, "save ", -1, gdb_stdout); | |
11754 | } | |
11755 | ||
84f4c1fe PM |
11756 | struct breakpoint * |
11757 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
11758 | void *data) | |
11759 | { | |
11760 | struct breakpoint *b, *temp; | |
11761 | ||
11762 | ALL_BREAKPOINTS_SAFE (b, temp) | |
11763 | { | |
11764 | if ((*callback) (b, data)) | |
11765 | return b; | |
11766 | } | |
11767 | ||
11768 | return NULL; | |
11769 | } | |
11770 | ||
c906108c | 11771 | void |
fba45db2 | 11772 | _initialize_breakpoint (void) |
c906108c SS |
11773 | { |
11774 | struct cmd_list_element *c; | |
11775 | ||
84acb35a | 11776 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 11777 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 11778 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 11779 | |
c906108c SS |
11780 | breakpoint_chain = 0; |
11781 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
11782 | before a breakpoint is set. */ | |
11783 | breakpoint_count = 0; | |
11784 | ||
1042e4c0 SS |
11785 | tracepoint_count = 0; |
11786 | ||
1bedd215 AC |
11787 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
11788 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
11789 | Usage is `ignore N COUNT'.")); | |
c906108c | 11790 | if (xdb_commands) |
c5aa993b | 11791 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 11792 | |
1bedd215 AC |
11793 | add_com ("commands", class_breakpoint, commands_command, _("\ |
11794 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
11795 | Give breakpoint number as argument after \"commands\".\n\ |
11796 | With no argument, the targeted breakpoint is the last one set.\n\ | |
11797 | The commands themselves follow starting on the next line.\n\ | |
11798 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11799 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11800 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11801 | |
1bedd215 AC |
11802 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11803 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11804 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11805 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11806 | |
1bedd215 | 11807 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11808 | Set a temporary breakpoint.\n\ |
c906108c SS |
11809 | Like \"break\" except the breakpoint is only temporary,\n\ |
11810 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11811 | by using \"enable delete\" on the breakpoint number.\n\ |
11812 | \n" | |
11813 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11814 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11815 | |
1bedd215 | 11816 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11817 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11818 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11819 | some target hardware may not have this support.\n\ |
11820 | \n" | |
11821 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11822 | set_cmd_completer (c, location_completer); |
c906108c | 11823 | |
1bedd215 | 11824 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11825 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11826 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11827 | so it will be deleted when hit.\n\ |
11828 | \n" | |
11829 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11830 | set_cmd_completer (c, location_completer); |
c906108c | 11831 | |
1bedd215 AC |
11832 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11833 | Enable some breakpoints.\n\ | |
c906108c SS |
11834 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11835 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11836 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11837 | With a subcommand you can enable temporarily."), |
c906108c SS |
11838 | &enablelist, "enable ", 1, &cmdlist); |
11839 | if (xdb_commands) | |
1bedd215 AC |
11840 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11841 | Enable some breakpoints.\n\ | |
c906108c SS |
11842 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11843 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11844 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11845 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11846 | |
11847 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11848 | ||
84951ab5 | 11849 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 11850 | Enable some breakpoints.\n\ |
c906108c SS |
11851 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11852 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11853 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11854 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11855 | |
1a966eab AC |
11856 | add_cmd ("once", no_class, enable_once_command, _("\ |
11857 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11858 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11859 | &enablebreaklist); |
11860 | ||
1a966eab AC |
11861 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11862 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11863 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11864 | &enablebreaklist); |
11865 | ||
1a966eab AC |
11866 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11867 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11868 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11869 | &enablelist); |
11870 | ||
1a966eab AC |
11871 | add_cmd ("once", no_class, enable_once_command, _("\ |
11872 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11873 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11874 | &enablelist); |
11875 | ||
1bedd215 AC |
11876 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
11877 | Disable some breakpoints.\n\ | |
c906108c SS |
11878 | Arguments are breakpoint numbers with spaces in between.\n\ |
11879 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11880 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
11881 | &disablelist, "disable ", 1, &cmdlist); |
11882 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
11883 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
11884 | if (xdb_commands) | |
1bedd215 AC |
11885 | add_com ("sb", class_breakpoint, disable_command, _("\ |
11886 | Disable some breakpoints.\n\ | |
c906108c SS |
11887 | Arguments are breakpoint numbers with spaces in between.\n\ |
11888 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11889 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 11890 | |
1a966eab AC |
11891 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
11892 | Disable some breakpoints.\n\ | |
c906108c SS |
11893 | Arguments are breakpoint numbers with spaces in between.\n\ |
11894 | To disable all breakpoints, give no argument.\n\ | |
11895 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 11896 | This command may be abbreviated \"disable\"."), |
c906108c SS |
11897 | &disablelist); |
11898 | ||
1bedd215 AC |
11899 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
11900 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11901 | Arguments are breakpoint numbers with spaces in between.\n\ |
11902 | To delete all breakpoints, give no argument.\n\ | |
11903 | \n\ | |
11904 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 11905 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
11906 | &deletelist, "delete ", 1, &cmdlist); |
11907 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 11908 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 11909 | if (xdb_commands) |
1bedd215 AC |
11910 | add_com ("db", class_breakpoint, delete_command, _("\ |
11911 | Delete some breakpoints.\n\ | |
c906108c | 11912 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 11913 | To delete all breakpoints, give no argument.\n")); |
c906108c | 11914 | |
1a966eab AC |
11915 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
11916 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11917 | Arguments are breakpoint numbers with spaces in between.\n\ |
11918 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 11919 | This command may be abbreviated \"delete\"."), |
c906108c SS |
11920 | &deletelist); |
11921 | ||
1bedd215 AC |
11922 | add_com ("clear", class_breakpoint, clear_command, _("\ |
11923 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
11924 | Argument may be line number, function name, or \"*\" and an address.\n\ |
11925 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
11926 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
11927 | If an address is specified, breakpoints at that address are cleared.\n\ |
11928 | \n\ | |
11929 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
11930 | is executing in.\n\ |
11931 | \n\ | |
1bedd215 | 11932 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 11933 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 11934 | |
1bedd215 | 11935 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
11936 | Set breakpoint at specified line or function.\n" |
11937 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 11938 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11939 | |
c906108c SS |
11940 | add_com_alias ("b", "break", class_run, 1); |
11941 | add_com_alias ("br", "break", class_run, 1); | |
11942 | add_com_alias ("bre", "break", class_run, 1); | |
11943 | add_com_alias ("brea", "break", class_run, 1); | |
11944 | ||
7681d515 PM |
11945 | if (xdb_commands) |
11946 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
11947 | |
11948 | if (dbx_commands) | |
11949 | { | |
1bedd215 AC |
11950 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
11951 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
11952 | &stoplist, "stop ", 1, &cmdlist); |
11953 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 11954 | _("Break in function or address."), &stoplist); |
c5aa993b | 11955 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 11956 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
11957 | add_com ("status", class_info, breakpoints_info, _("\ |
11958 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11959 | The \"Type\" column indicates one of:\n\ |
11960 | \tbreakpoint - normal breakpoint\n\ | |
11961 | \twatchpoint - watchpoint\n\ | |
11962 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11963 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11964 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11965 | address and file/line number respectively.\n\ |
11966 | \n\ | |
11967 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11968 | are set to the address of the last breakpoint listed unless the command\n\ |
11969 | is prefixed with \"server \".\n\n\ | |
c906108c | 11970 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11971 | breakpoint set.")); |
c906108c SS |
11972 | } |
11973 | ||
1bedd215 AC |
11974 | add_info ("breakpoints", breakpoints_info, _("\ |
11975 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11976 | The \"Type\" column indicates one of:\n\ |
11977 | \tbreakpoint - normal breakpoint\n\ | |
11978 | \twatchpoint - watchpoint\n\ | |
11979 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11980 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11981 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11982 | address and file/line number respectively.\n\ |
11983 | \n\ | |
11984 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11985 | are set to the address of the last breakpoint listed unless the command\n\ |
11986 | is prefixed with \"server \".\n\n\ | |
c906108c | 11987 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11988 | breakpoint set.")); |
c906108c | 11989 | |
6b04bdb7 MS |
11990 | add_info_alias ("b", "breakpoints", 1); |
11991 | ||
c906108c | 11992 | if (xdb_commands) |
1bedd215 AC |
11993 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
11994 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11995 | The \"Type\" column indicates one of:\n\ |
11996 | \tbreakpoint - normal breakpoint\n\ | |
11997 | \twatchpoint - watchpoint\n\ | |
11998 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11999 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12000 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12001 | address and file/line number respectively.\n\ |
12002 | \n\ | |
12003 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12004 | are set to the address of the last breakpoint listed unless the command\n\ |
12005 | is prefixed with \"server \".\n\n\ | |
c906108c | 12006 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12007 | breakpoint set.")); |
c906108c | 12008 | |
1a966eab AC |
12009 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12010 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12011 | The \"Type\" column indicates one of:\n\ |
12012 | \tbreakpoint - normal breakpoint\n\ | |
12013 | \twatchpoint - watchpoint\n\ | |
12014 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12015 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12016 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12017 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12018 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12019 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12020 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12021 | address and file/line number respectively.\n\ |
12022 | \n\ | |
12023 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12024 | are set to the address of the last breakpoint listed unless the command\n\ |
12025 | is prefixed with \"server \".\n\n\ | |
c906108c | 12026 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12027 | breakpoint set."), |
c906108c SS |
12028 | &maintenanceinfolist); |
12029 | ||
44feb3ce TT |
12030 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12031 | Set catchpoints to catch events."), | |
12032 | &catch_cmdlist, "catch ", | |
12033 | 0/*allow-unknown*/, &cmdlist); | |
12034 | ||
12035 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12036 | Set temporary catchpoints to catch events."), | |
12037 | &tcatch_cmdlist, "tcatch ", | |
12038 | 0/*allow-unknown*/, &cmdlist); | |
12039 | ||
12040 | /* Add catch and tcatch sub-commands. */ | |
12041 | add_catch_command ("catch", _("\ | |
12042 | Catch an exception, when caught.\n\ | |
12043 | With an argument, catch only exceptions with the given name."), | |
12044 | catch_catch_command, | |
a96d9b2e | 12045 | NULL, |
44feb3ce TT |
12046 | CATCH_PERMANENT, |
12047 | CATCH_TEMPORARY); | |
12048 | add_catch_command ("throw", _("\ | |
12049 | Catch an exception, when thrown.\n\ | |
12050 | With an argument, catch only exceptions with the given name."), | |
12051 | catch_throw_command, | |
a96d9b2e | 12052 | NULL, |
44feb3ce TT |
12053 | CATCH_PERMANENT, |
12054 | CATCH_TEMPORARY); | |
12055 | add_catch_command ("fork", _("Catch calls to fork."), | |
12056 | catch_fork_command_1, | |
a96d9b2e | 12057 | NULL, |
44feb3ce TT |
12058 | (void *) (uintptr_t) catch_fork_permanent, |
12059 | (void *) (uintptr_t) catch_fork_temporary); | |
12060 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12061 | catch_fork_command_1, | |
a96d9b2e | 12062 | NULL, |
44feb3ce TT |
12063 | (void *) (uintptr_t) catch_vfork_permanent, |
12064 | (void *) (uintptr_t) catch_vfork_temporary); | |
12065 | add_catch_command ("exec", _("Catch calls to exec."), | |
12066 | catch_exec_command_1, | |
a96d9b2e SDJ |
12067 | NULL, |
12068 | CATCH_PERMANENT, | |
12069 | CATCH_TEMPORARY); | |
12070 | add_catch_command ("syscall", _("\ | |
12071 | Catch system calls by their names and/or numbers.\n\ | |
12072 | Arguments say which system calls to catch. If no arguments\n\ | |
12073 | are given, every system call will be caught.\n\ | |
12074 | Arguments, if given, should be one or more system call names\n\ | |
12075 | (if your system supports that), or system call numbers."), | |
12076 | catch_syscall_command_1, | |
12077 | catch_syscall_completer, | |
44feb3ce TT |
12078 | CATCH_PERMANENT, |
12079 | CATCH_TEMPORARY); | |
44feb3ce TT |
12080 | add_catch_command ("exception", _("\ |
12081 | Catch Ada exceptions, when raised.\n\ | |
12082 | With an argument, catch only exceptions with the given name."), | |
12083 | catch_ada_exception_command, | |
a96d9b2e | 12084 | NULL, |
44feb3ce TT |
12085 | CATCH_PERMANENT, |
12086 | CATCH_TEMPORARY); | |
12087 | add_catch_command ("assert", _("\ | |
12088 | Catch failed Ada assertions, when raised.\n\ | |
12089 | With an argument, catch only exceptions with the given name."), | |
12090 | catch_assert_command, | |
a96d9b2e | 12091 | NULL, |
44feb3ce TT |
12092 | CATCH_PERMANENT, |
12093 | CATCH_TEMPORARY); | |
c5aa993b | 12094 | |
1bedd215 AC |
12095 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12096 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12097 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12098 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12099 | an expression changes.\n\ |
12100 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12101 | the memory to which it refers.")); | |
65d12d83 | 12102 | set_cmd_completer (c, expression_completer); |
c906108c | 12103 | |
1bedd215 AC |
12104 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12105 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12106 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12107 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12108 | an expression is read.\n\ |
12109 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12110 | the memory to which it refers.")); | |
65d12d83 | 12111 | set_cmd_completer (c, expression_completer); |
c906108c | 12112 | |
1bedd215 AC |
12113 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12114 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12115 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12116 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12117 | an expression is either read or written.\n\ |
12118 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12119 | the memory to which it refers.")); | |
65d12d83 | 12120 | set_cmd_completer (c, expression_completer); |
c906108c | 12121 | |
d77f58be SS |
12122 | add_info ("watchpoints", watchpoints_info, _("\ |
12123 | Status of watchpoints, or watchpoint number NUMBER.")); | |
12124 | ||
c906108c SS |
12125 | |
12126 | ||
920d2a44 AC |
12127 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12128 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12129 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12130 | &can_use_hw_watchpoints, _("\ | |
12131 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12132 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12133 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12134 | such is available. (However, any hardware watchpoints that were\n\ | |
12135 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12136 | hardware.)"), |
12137 | NULL, | |
920d2a44 | 12138 | show_can_use_hw_watchpoints, |
85c07804 | 12139 | &setlist, &showlist); |
c906108c SS |
12140 | |
12141 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12142 | |
1042e4c0 SS |
12143 | /* Tracepoint manipulation commands. */ |
12144 | ||
12145 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12146 | Set a tracepoint at specified line or function.\n\ | |
12147 | \n" | |
12148 | BREAK_ARGS_HELP ("trace") "\n\ | |
12149 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12150 | set_cmd_completer (c, location_completer); | |
12151 | ||
12152 | add_com_alias ("tp", "trace", class_alias, 0); | |
12153 | add_com_alias ("tr", "trace", class_alias, 1); | |
12154 | add_com_alias ("tra", "trace", class_alias, 1); | |
12155 | add_com_alias ("trac", "trace", class_alias, 1); | |
12156 | ||
7a697b8d SS |
12157 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12158 | Set a fast tracepoint at specified line or function.\n\ | |
12159 | \n" | |
12160 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12161 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12162 | set_cmd_completer (c, location_completer); | |
12163 | ||
0fb4aa4b PA |
12164 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12165 | Set a static tracepoint at specified line, function or marker.\n\ | |
12166 | \n\ | |
12167 | strace [LOCATION] [if CONDITION]\n\ | |
12168 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12169 | or -m MARKER_ID.\n\ | |
12170 | If a line number is specified, probe the marker at start of code\n\ | |
12171 | for that line. If a function is specified, probe the marker at start\n\ | |
12172 | of code for that function. If an address is specified, probe the marker\n\ | |
12173 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12174 | with that name. With no LOCATION, uses current execution address of\n\ | |
12175 | the selected stack frame.\n\ | |
12176 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12177 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12178 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12179 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12180 | \n\ | |
12181 | CONDITION is a boolean expression.\n\ | |
12182 | \n\ | |
d41c0fc8 PA |
12183 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12184 | conditions are different.\n\ | |
0fb4aa4b PA |
12185 | \n\ |
12186 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12187 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12188 | set_cmd_completer (c, location_completer); | |
12189 | ||
1042e4c0 SS |
12190 | add_info ("tracepoints", tracepoints_info, _("\ |
12191 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
12192 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
12193 | last tracepoint set.")); | |
12194 | ||
12195 | add_info_alias ("tp", "tracepoints", 1); | |
12196 | ||
12197 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12198 | Delete specified tracepoints.\n\ | |
12199 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12200 | No argument means delete all tracepoints."), | |
12201 | &deletelist); | |
12202 | ||
12203 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12204 | Disable specified tracepoints.\n\ | |
12205 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12206 | No argument means disable all tracepoints."), | |
12207 | &disablelist); | |
12208 | deprecate_cmd (c, "disable"); | |
12209 | ||
12210 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12211 | Enable specified tracepoints.\n\ | |
12212 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12213 | No argument means enable all tracepoints."), | |
12214 | &enablelist); | |
12215 | deprecate_cmd (c, "enable"); | |
12216 | ||
12217 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12218 | Set the passcount for a tracepoint.\n\ | |
12219 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12220 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12221 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12222 | ||
6149aea9 PA |
12223 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12224 | _("Save breakpoint definitions as a script."), | |
12225 | &save_cmdlist, "save ", | |
12226 | 0/*allow-unknown*/, &cmdlist); | |
12227 | ||
12228 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12229 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12230 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12231 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12232 | session to restore them."), | |
12233 | &save_cmdlist); | |
12234 | set_cmd_completer (c, filename_completer); | |
12235 | ||
12236 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12237 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12238 | Use the 'source' command in another debug session to restore them."), |
12239 | &save_cmdlist); | |
1042e4c0 SS |
12240 | set_cmd_completer (c, filename_completer); |
12241 | ||
6149aea9 PA |
12242 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12243 | deprecate_cmd (c, "save tracepoints"); | |
12244 | ||
1bedd215 | 12245 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12246 | Breakpoint specific settings\n\ |
12247 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12248 | pending breakpoint behavior"), |
fa8d40ab JJ |
12249 | &breakpoint_set_cmdlist, "set breakpoint ", |
12250 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 12251 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12252 | Breakpoint specific settings\n\ |
12253 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12254 | pending breakpoint behavior"), |
fa8d40ab JJ |
12255 | &breakpoint_show_cmdlist, "show breakpoint ", |
12256 | 0/*allow-unknown*/, &showlist); | |
12257 | ||
7915a72c AC |
12258 | add_setshow_auto_boolean_cmd ("pending", no_class, |
12259 | &pending_break_support, _("\ | |
12260 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
12261 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
12262 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
12263 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
12264 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 12265 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 12266 | NULL, |
920d2a44 | 12267 | show_pending_break_support, |
6e1d7d6c AC |
12268 | &breakpoint_set_cmdlist, |
12269 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
12270 | |
12271 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
12272 | |
12273 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
12274 | &automatic_hardware_breakpoints, _("\ | |
12275 | Set automatic usage of hardware breakpoints."), _("\ | |
12276 | Show automatic usage of hardware breakpoints."), _("\ | |
12277 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
12278 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
12279 | a warning will be emitted for such breakpoints."), | |
12280 | NULL, | |
12281 | show_automatic_hardware_breakpoints, | |
12282 | &breakpoint_set_cmdlist, | |
12283 | &breakpoint_show_cmdlist); | |
74960c60 | 12284 | |
33e5cbd6 PA |
12285 | add_setshow_enum_cmd ("always-inserted", class_support, |
12286 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
12287 | Set mode for inserting breakpoints."), _("\ |
12288 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
12289 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
12290 | resumed, and removed when execution stops. When this mode is on,\n\ | |
12291 | breakpoints are inserted immediately and removed only when the user\n\ | |
12292 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
12293 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
12294 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
12295 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
12296 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
12297 | NULL, |
12298 | &show_always_inserted_mode, | |
12299 | &breakpoint_set_cmdlist, | |
12300 | &breakpoint_show_cmdlist); | |
765dc015 VP |
12301 | |
12302 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
12303 | |
12304 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 12305 | } |