Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
4c38e0a4 | 5 | 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
c906108c | 64 | |
1042e4c0 SS |
65 | /* readline include files */ |
66 | #include "readline/readline.h" | |
67 | #include "readline/history.h" | |
68 | ||
69 | /* readline defines this. */ | |
70 | #undef savestring | |
71 | ||
034dad6f | 72 | #include "mi/mi-common.h" |
104c1213 | 73 | |
44feb3ce TT |
74 | /* Arguments to pass as context to some catch command handlers. */ |
75 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
76 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 77 | |
44feb3ce | 78 | /* Prototypes for local functions. */ |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 83 | |
a14ed312 | 84 | static void enable_once_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 87 | |
a14ed312 | 88 | static void disable_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void enable_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 93 | |
a14ed312 | 94 | static void ignore_command (char *, int); |
c906108c | 95 | |
4efb68b1 | 96 | static int breakpoint_re_set_one (void *); |
c906108c | 97 | |
a14ed312 | 98 | static void clear_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void catch_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void watch_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 105 | |
98deb0da | 106 | static void break_command_1 (char *, int, int); |
c906108c | 107 | |
a14ed312 | 108 | static void mention (struct breakpoint *); |
c906108c | 109 | |
63c252f8 PM |
110 | /* This function is used in gdbtk sources and thus can not be made static. */ |
111 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
112 | struct symtab_and_line, |
113 | enum bptype); | |
c906108c | 114 | |
76897487 KB |
115 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
116 | ||
a6d9a66e UW |
117 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
118 | CORE_ADDR bpaddr, | |
88f7da05 | 119 | enum bptype bptype); |
76897487 | 120 | |
6c95b8df PA |
121 | static void describe_other_breakpoints (struct gdbarch *, |
122 | struct program_space *, CORE_ADDR, | |
5af949e3 | 123 | struct obj_section *, int); |
c906108c | 124 | |
6c95b8df PA |
125 | static int breakpoint_address_match (struct address_space *aspace1, |
126 | CORE_ADDR addr1, | |
127 | struct address_space *aspace2, | |
128 | CORE_ADDR addr2); | |
129 | ||
85d721b8 PA |
130 | static int watchpoint_locations_match (struct bp_location *loc1, |
131 | struct bp_location *loc2); | |
132 | ||
a14ed312 | 133 | static void breakpoints_info (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | static void breakpoint_1 (int, int); |
c906108c | 136 | |
89f9893c | 137 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 138 | |
4efb68b1 | 139 | static int breakpoint_cond_eval (void *); |
c906108c | 140 | |
4efb68b1 | 141 | static void cleanup_executing_breakpoints (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void commands_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void condition_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static int get_number_trailer (char **, int); |
c906108c | 148 | |
a14ed312 | 149 | void set_breakpoint_count (int); |
c906108c | 150 | |
c5aa993b JM |
151 | typedef enum |
152 | { | |
153 | mark_inserted, | |
154 | mark_uninserted | |
155 | } | |
156 | insertion_state_t; | |
c906108c | 157 | |
0bde7532 | 158 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 159 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 160 | |
a14ed312 | 161 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
162 | |
163 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 164 | |
4efb68b1 | 165 | static int watchpoint_check (void *); |
c906108c | 166 | |
a14ed312 | 167 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 168 | |
a14ed312 | 169 | static int hw_breakpoint_used_count (void); |
c906108c | 170 | |
a14ed312 | 171 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 172 | |
a14ed312 | 173 | static void hbreak_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void thbreak_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void watch_command_1 (char *, int, int); |
c906108c | 178 | |
a14ed312 | 179 | static void rwatch_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static void awatch_command (char *, int); |
c906108c | 182 | |
a14ed312 | 183 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 184 | |
a14ed312 | 185 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 190 | |
a14ed312 | 191 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 192 | |
d85310f7 MS |
193 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
194 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 195 | |
a14ed312 | 196 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 197 | |
a14ed312 | 198 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 199 | |
6c95b8df PA |
200 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
201 | CORE_ADDR pc); | |
1aafd4da | 202 | |
fe3f5fa8 VP |
203 | static void free_bp_location (struct bp_location *loc); |
204 | ||
39d61571 | 205 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 206 | |
b60e7edf | 207 | static void update_global_location_list (int); |
a5606eee | 208 | |
b60e7edf | 209 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
210 | |
211 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
212 | ||
213 | static void insert_breakpoint_locations (void); | |
a5606eee | 214 | |
a96d9b2e SDJ |
215 | static int syscall_catchpoint_p (struct breakpoint *b); |
216 | ||
1042e4c0 SS |
217 | static void tracepoints_info (char *, int); |
218 | ||
219 | static void delete_trace_command (char *, int); | |
220 | ||
221 | static void enable_trace_command (char *, int); | |
222 | ||
223 | static void disable_trace_command (char *, int); | |
224 | ||
225 | static void trace_pass_command (char *, int); | |
226 | ||
3daf8fe5 JG |
227 | static void skip_prologue_sal (struct symtab_and_line *sal); |
228 | ||
229 | ||
f3b1572e PA |
230 | /* Flag indicating that a command has proceeded the inferior past the |
231 | current breakpoint. */ | |
232 | ||
233 | static int breakpoint_proceeded; | |
234 | ||
2cec12e5 AR |
235 | static const char * |
236 | bpdisp_text (enum bpdisp disp) | |
237 | { | |
238 | /* NOTE: the following values are a part of MI protocol and represent | |
239 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
240 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
241 | return bpdisps[(int) disp]; | |
242 | } | |
c906108c | 243 | |
2cec12e5 | 244 | /* Prototypes for exported functions. */ |
c906108c SS |
245 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
246 | if such is available. */ | |
247 | static int can_use_hw_watchpoints; | |
248 | ||
920d2a44 AC |
249 | static void |
250 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
251 | struct cmd_list_element *c, | |
252 | const char *value) | |
253 | { | |
254 | fprintf_filtered (file, _("\ | |
255 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
256 | value); | |
257 | } | |
258 | ||
fa8d40ab JJ |
259 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
260 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
261 | for unrecognized breakpoint locations. | |
262 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
263 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
264 | static void |
265 | show_pending_break_support (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 behavior regarding pending breakpoints is %s.\n"), | |
271 | value); | |
272 | } | |
fa8d40ab | 273 | |
765dc015 VP |
274 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
275 | set with "break" but falling in read-only memory. | |
276 | If 0, gdb will warn about such breakpoints, but won't automatically | |
277 | use hardware breakpoints. */ | |
278 | static int automatic_hardware_breakpoints; | |
279 | static void | |
280 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
281 | struct cmd_list_element *c, | |
282 | const char *value) | |
283 | { | |
284 | fprintf_filtered (file, _("\ | |
285 | Automatic usage of hardware breakpoints is %s.\n"), | |
286 | value); | |
287 | } | |
288 | ||
33e5cbd6 PA |
289 | /* If on, gdb will keep breakpoints inserted even as inferior is |
290 | stopped, and immediately insert any new breakpoints. If off, gdb | |
291 | will insert breakpoints into inferior only when resuming it, and | |
292 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
293 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
294 | ||
295 | static const char always_inserted_auto[] = "auto"; | |
296 | static const char always_inserted_on[] = "on"; | |
297 | static const char always_inserted_off[] = "off"; | |
298 | static const char *always_inserted_enums[] = { | |
299 | always_inserted_auto, | |
300 | always_inserted_off, | |
301 | always_inserted_on, | |
302 | NULL | |
303 | }; | |
304 | static const char *always_inserted_mode = always_inserted_auto; | |
305 | static void | |
74960c60 | 306 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 307 | struct cmd_list_element *c, const char *value) |
74960c60 | 308 | { |
33e5cbd6 PA |
309 | if (always_inserted_mode == always_inserted_auto) |
310 | fprintf_filtered (file, _("\ | |
311 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
312 | value, | |
313 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
314 | else | |
315 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
316 | } |
317 | ||
33e5cbd6 PA |
318 | int |
319 | breakpoints_always_inserted_mode (void) | |
320 | { | |
321 | return (always_inserted_mode == always_inserted_on | |
322 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
323 | } | |
765dc015 | 324 | |
a14ed312 | 325 | void _initialize_breakpoint (void); |
c906108c | 326 | |
c906108c SS |
327 | /* Are we executing breakpoint commands? */ |
328 | static int executing_breakpoint_commands; | |
329 | ||
c02f5703 MS |
330 | /* Are overlay event breakpoints enabled? */ |
331 | static int overlay_events_enabled; | |
332 | ||
c906108c SS |
333 | /* Walk the following statement or block through all breakpoints. |
334 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
335 | breakpoint. */ | |
336 | ||
5c44784c | 337 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 338 | |
5c44784c JM |
339 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
340 | for (B = breakpoint_chain; \ | |
341 | B ? (TMP=B->next, 1): 0; \ | |
342 | B = TMP) | |
c906108c | 343 | |
876fa593 JK |
344 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
345 | provided so update_global_location_list must not be called while executing | |
346 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 347 | |
876fa593 JK |
348 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
349 | for (BP_TMP = bp_location; \ | |
350 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
351 | BP_TMP++) | |
7cc221ef | 352 | |
1042e4c0 SS |
353 | /* Iterator for tracepoints only. */ |
354 | ||
355 | #define ALL_TRACEPOINTS(B) \ | |
356 | for (B = breakpoint_chain; B; B = B->next) \ | |
7a697b8d | 357 | if (tracepoint_type (B)) |
1042e4c0 | 358 | |
7cc221ef | 359 | /* Chains of all breakpoints defined. */ |
c906108c SS |
360 | |
361 | struct breakpoint *breakpoint_chain; | |
362 | ||
876fa593 JK |
363 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
364 | ||
365 | static struct bp_location **bp_location; | |
366 | ||
367 | /* Number of elements of BP_LOCATION. */ | |
368 | ||
369 | static unsigned bp_location_count; | |
370 | ||
371 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
372 | for the current elements of BP_LOCATION which get a valid result from | |
373 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
374 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
375 | ||
376 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
377 | ||
378 | /* Maximum offset plus alignment between | |
379 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
380 | the current elements of BP_LOCATION which get a valid result from | |
381 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
382 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
383 | ||
384 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 385 | |
20874c92 | 386 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 387 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
388 | may still be reported by a target. */ |
389 | VEC(bp_location_p) *moribund_locations = NULL; | |
390 | ||
c906108c SS |
391 | /* Number of last breakpoint made. */ |
392 | ||
393 | int breakpoint_count; | |
394 | ||
1042e4c0 SS |
395 | /* Number of last tracepoint made. */ |
396 | ||
397 | int tracepoint_count; | |
398 | ||
468d015d JJ |
399 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
400 | static int | |
401 | breakpoint_enabled (struct breakpoint *b) | |
402 | { | |
0d381245 | 403 | return (b->enable_state == bp_enabled); |
468d015d JJ |
404 | } |
405 | ||
c906108c SS |
406 | /* Set breakpoint count to NUM. */ |
407 | ||
408 | void | |
fba45db2 | 409 | set_breakpoint_count (int num) |
c906108c SS |
410 | { |
411 | breakpoint_count = num; | |
4fa62494 | 412 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
413 | } |
414 | ||
415 | /* Used in run_command to zero the hit count when a new run starts. */ | |
416 | ||
417 | void | |
fba45db2 | 418 | clear_breakpoint_hit_counts (void) |
c906108c SS |
419 | { |
420 | struct breakpoint *b; | |
421 | ||
422 | ALL_BREAKPOINTS (b) | |
423 | b->hit_count = 0; | |
424 | } | |
425 | ||
7a697b8d SS |
426 | /* Encapsulate tests for different types of tracepoints. */ |
427 | ||
428 | static int | |
429 | tracepoint_type (const struct breakpoint *b) | |
430 | { | |
431 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); | |
432 | } | |
433 | ||
c906108c SS |
434 | /* Default address, symtab and line to put a breakpoint at |
435 | for "break" command with no arg. | |
436 | if default_breakpoint_valid is zero, the other three are | |
437 | not valid, and "break" with no arg is an error. | |
438 | ||
439 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
440 | ||
441 | int default_breakpoint_valid; | |
442 | CORE_ADDR default_breakpoint_address; | |
443 | struct symtab *default_breakpoint_symtab; | |
444 | int default_breakpoint_line; | |
6c95b8df PA |
445 | struct program_space *default_breakpoint_pspace; |
446 | ||
c906108c SS |
447 | \f |
448 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
449 | Advance *PP after the string and any trailing whitespace. | |
450 | ||
451 | Currently the string can either be a number or "$" followed by the name | |
452 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 453 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
454 | |
455 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
456 | |
457 | TRAILER is a character which can be found after the number; most | |
458 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 459 | static int |
fba45db2 | 460 | get_number_trailer (char **pp, int trailer) |
c906108c | 461 | { |
5c44784c | 462 | int retval = 0; /* default */ |
c906108c SS |
463 | char *p = *pp; |
464 | ||
465 | if (p == NULL) | |
466 | /* Empty line means refer to the last breakpoint. */ | |
467 | return breakpoint_count; | |
468 | else if (*p == '$') | |
469 | { | |
470 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 471 | to pass to lookup_internalvar(). */ |
c906108c SS |
472 | char *varname; |
473 | char *start = ++p; | |
4fa62494 | 474 | LONGEST val; |
c906108c SS |
475 | |
476 | while (isalnum (*p) || *p == '_') | |
477 | p++; | |
478 | varname = (char *) alloca (p - start + 1); | |
479 | strncpy (varname, start, p - start); | |
480 | varname[p - start] = '\0'; | |
4fa62494 UW |
481 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
482 | retval = (int) val; | |
5c44784c JM |
483 | else |
484 | { | |
a3f17187 | 485 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
486 | retval = 0; |
487 | } | |
c906108c SS |
488 | } |
489 | else | |
490 | { | |
491 | if (*p == '-') | |
492 | ++p; | |
493 | while (*p >= '0' && *p <= '9') | |
494 | ++p; | |
495 | if (p == *pp) | |
496 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
497 | { |
498 | /* Skip non-numeric token */ | |
499 | while (*p && !isspace((int) *p)) | |
500 | ++p; | |
501 | /* Return zero, which caller must interpret as error. */ | |
502 | retval = 0; | |
503 | } | |
504 | else | |
505 | retval = atoi (*pp); | |
506 | } | |
507 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
508 | { | |
509 | /* Trailing junk: return 0 and let caller print error msg. */ | |
510 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
511 | ++p; | |
512 | retval = 0; | |
c906108c | 513 | } |
c906108c SS |
514 | while (isspace (*p)) |
515 | p++; | |
516 | *pp = p; | |
517 | return retval; | |
518 | } | |
5c44784c | 519 | |
11cf8741 | 520 | |
5c44784c JM |
521 | /* Like get_number_trailer, but don't allow a trailer. */ |
522 | int | |
fba45db2 | 523 | get_number (char **pp) |
5c44784c JM |
524 | { |
525 | return get_number_trailer (pp, '\0'); | |
526 | } | |
527 | ||
528 | /* Parse a number or a range. | |
529 | * A number will be of the form handled by get_number. | |
530 | * A range will be of the form <number1> - <number2>, and | |
531 | * will represent all the integers between number1 and number2, | |
532 | * inclusive. | |
533 | * | |
534 | * While processing a range, this fuction is called iteratively; | |
535 | * At each call it will return the next value in the range. | |
536 | * | |
537 | * At the beginning of parsing a range, the char pointer PP will | |
538 | * be advanced past <number1> and left pointing at the '-' token. | |
539 | * Subsequent calls will not advance the pointer until the range | |
540 | * is completed. The call that completes the range will advance | |
541 | * pointer PP past <number2>. | |
542 | */ | |
543 | ||
544 | int | |
fba45db2 | 545 | get_number_or_range (char **pp) |
5c44784c JM |
546 | { |
547 | static int last_retval, end_value; | |
548 | static char *end_ptr; | |
549 | static int in_range = 0; | |
550 | ||
551 | if (**pp != '-') | |
552 | { | |
553 | /* Default case: pp is pointing either to a solo number, | |
554 | or to the first number of a range. */ | |
555 | last_retval = get_number_trailer (pp, '-'); | |
556 | if (**pp == '-') | |
557 | { | |
558 | char **temp; | |
559 | ||
560 | /* This is the start of a range (<number1> - <number2>). | |
561 | Skip the '-', parse and remember the second number, | |
562 | and also remember the end of the final token. */ | |
563 | ||
564 | temp = &end_ptr; | |
565 | end_ptr = *pp + 1; | |
566 | while (isspace ((int) *end_ptr)) | |
567 | end_ptr++; /* skip white space */ | |
568 | end_value = get_number (temp); | |
569 | if (end_value < last_retval) | |
570 | { | |
8a3fe4f8 | 571 | error (_("inverted range")); |
5c44784c JM |
572 | } |
573 | else if (end_value == last_retval) | |
574 | { | |
575 | /* degenerate range (number1 == number2). Advance the | |
576 | token pointer so that the range will be treated as a | |
577 | single number. */ | |
578 | *pp = end_ptr; | |
579 | } | |
580 | else | |
581 | in_range = 1; | |
582 | } | |
583 | } | |
584 | else if (! in_range) | |
8a3fe4f8 | 585 | error (_("negative value")); |
5c44784c JM |
586 | else |
587 | { | |
588 | /* pp points to the '-' that betokens a range. All | |
589 | number-parsing has already been done. Return the next | |
590 | integer value (one greater than the saved previous value). | |
591 | Do not advance the token pointer 'pp' until the end of range | |
592 | is reached. */ | |
593 | ||
594 | if (++last_retval == end_value) | |
595 | { | |
596 | /* End of range reached; advance token pointer. */ | |
597 | *pp = end_ptr; | |
598 | in_range = 0; | |
599 | } | |
600 | } | |
601 | return last_retval; | |
602 | } | |
603 | ||
48cb2d85 VP |
604 | /* Return the breakpoint with the specified number, or NULL |
605 | if the number does not refer to an existing breakpoint. */ | |
606 | ||
607 | struct breakpoint * | |
608 | get_breakpoint (int num) | |
609 | { | |
610 | struct breakpoint *b; | |
611 | ||
612 | ALL_BREAKPOINTS (b) | |
613 | if (b->number == num) | |
614 | return b; | |
615 | ||
616 | return NULL; | |
617 | } | |
5c44784c | 618 | |
c906108c SS |
619 | \f |
620 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
621 | ||
622 | static void | |
fba45db2 | 623 | condition_command (char *arg, int from_tty) |
c906108c | 624 | { |
52f0bd74 | 625 | struct breakpoint *b; |
c906108c | 626 | char *p; |
52f0bd74 | 627 | int bnum; |
c906108c SS |
628 | |
629 | if (arg == 0) | |
e2e0b3e5 | 630 | error_no_arg (_("breakpoint number")); |
c906108c SS |
631 | |
632 | p = arg; | |
633 | bnum = get_number (&p); | |
5c44784c | 634 | if (bnum == 0) |
8a3fe4f8 | 635 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
636 | |
637 | ALL_BREAKPOINTS (b) | |
638 | if (b->number == bnum) | |
2f069f6f JB |
639 | { |
640 | struct bp_location *loc = b->loc; | |
641 | for (; loc; loc = loc->next) | |
642 | { | |
643 | if (loc->cond) | |
644 | { | |
645 | xfree (loc->cond); | |
646 | loc->cond = 0; | |
647 | } | |
648 | } | |
649 | if (b->cond_string != NULL) | |
650 | xfree (b->cond_string); | |
c906108c | 651 | |
2f069f6f JB |
652 | if (*p == 0) |
653 | { | |
654 | b->cond_string = NULL; | |
655 | if (from_tty) | |
656 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
657 | } | |
658 | else | |
659 | { | |
660 | arg = p; | |
661 | /* I don't know if it matters whether this is the string the user | |
662 | typed in or the decompiled expression. */ | |
1b36a34b | 663 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
664 | b->condition_not_parsed = 0; |
665 | for (loc = b->loc; loc; loc = loc->next) | |
666 | { | |
667 | arg = p; | |
668 | loc->cond = | |
669 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
670 | if (*arg) | |
671 | error (_("Junk at end of expression")); | |
672 | } | |
673 | } | |
674 | breakpoints_changed (); | |
383f836e | 675 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
676 | return; |
677 | } | |
c906108c | 678 | |
8a3fe4f8 | 679 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
680 | } |
681 | ||
48cb2d85 VP |
682 | /* Set the command list of B to COMMANDS. */ |
683 | ||
684 | void | |
685 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
686 | { | |
687 | free_command_lines (&b->commands); | |
688 | b->commands = commands; | |
689 | breakpoints_changed (); | |
690 | observer_notify_breakpoint_modified (b->number); | |
691 | } | |
692 | ||
c906108c | 693 | static void |
fba45db2 | 694 | commands_command (char *arg, int from_tty) |
c906108c | 695 | { |
52f0bd74 | 696 | struct breakpoint *b; |
c906108c | 697 | char *p; |
52f0bd74 | 698 | int bnum; |
c906108c SS |
699 | struct command_line *l; |
700 | ||
701 | /* If we allowed this, we would have problems with when to | |
702 | free the storage, if we change the commands currently | |
703 | being read from. */ | |
704 | ||
705 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 706 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
707 | |
708 | p = arg; | |
709 | bnum = get_number (&p); | |
5c44784c | 710 | |
c906108c | 711 | if (p && *p) |
8a3fe4f8 | 712 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 713 | |
c906108c SS |
714 | ALL_BREAKPOINTS (b) |
715 | if (b->number == bnum) | |
9ebf4acf AC |
716 | { |
717 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
718 | bnum); | |
719 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 720 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf | 721 | do_cleanups (cleanups); |
48cb2d85 | 722 | breakpoint_set_commands (b, l); |
9ebf4acf | 723 | return; |
c5aa993b | 724 | } |
8a3fe4f8 | 725 | error (_("No breakpoint number %d."), bnum); |
c906108c | 726 | } |
40c03ae8 EZ |
727 | |
728 | /* Like commands_command, but instead of reading the commands from | |
729 | input stream, takes them from an already parsed command structure. | |
730 | ||
731 | This is used by cli-script.c to DTRT with breakpoint commands | |
732 | that are part of if and while bodies. */ | |
733 | enum command_control_type | |
734 | commands_from_control_command (char *arg, struct command_line *cmd) | |
735 | { | |
736 | struct breakpoint *b; | |
737 | char *p; | |
738 | int bnum; | |
739 | ||
740 | /* If we allowed this, we would have problems with when to | |
741 | free the storage, if we change the commands currently | |
742 | being read from. */ | |
743 | ||
744 | if (executing_breakpoint_commands) | |
745 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
746 | ||
747 | /* An empty string for the breakpoint number means the last | |
748 | breakpoint, but get_number expects a NULL pointer. */ | |
749 | if (arg && !*arg) | |
750 | p = NULL; | |
751 | else | |
752 | p = arg; | |
753 | bnum = get_number (&p); | |
754 | ||
755 | if (p && *p) | |
756 | error (_("Unexpected extra arguments following breakpoint number.")); | |
757 | ||
758 | ALL_BREAKPOINTS (b) | |
759 | if (b->number == bnum) | |
760 | { | |
761 | free_command_lines (&b->commands); | |
762 | if (cmd->body_count != 1) | |
763 | error (_("Invalid \"commands\" block structure.")); | |
764 | /* We need to copy the commands because if/while will free the | |
765 | list after it finishes execution. */ | |
766 | b->commands = copy_command_lines (cmd->body_list[0]); | |
767 | breakpoints_changed (); | |
383f836e | 768 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 769 | return simple_control; |
2f069f6f | 770 | } |
40c03ae8 EZ |
771 | error (_("No breakpoint number %d."), bnum); |
772 | } | |
876fa593 JK |
773 | |
774 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
775 | ||
776 | static int | |
777 | bp_location_has_shadow (struct bp_location *bl) | |
778 | { | |
779 | if (bl->loc_type != bp_loc_software_breakpoint) | |
780 | return 0; | |
781 | if (!bl->inserted) | |
782 | return 0; | |
783 | if (bl->target_info.shadow_len == 0) | |
784 | /* bp isn't valid, or doesn't shadow memory. */ | |
785 | return 0; | |
786 | return 1; | |
787 | } | |
788 | ||
8defab1a | 789 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
790 | by replacing any memory breakpoints with their shadowed contents. |
791 | ||
792 | The range of shadowed area by each bp_location is: | |
793 | b->address - bp_location_placed_address_before_address_max | |
794 | up to b->address + bp_location_shadow_len_after_address_max | |
795 | The range we were requested to resolve shadows for is: | |
796 | memaddr ... memaddr + len | |
797 | Thus the safe cutoff boundaries for performance optimization are | |
798 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
799 | and: | |
800 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 801 | |
8defab1a DJ |
802 | void |
803 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 804 | { |
876fa593 JK |
805 | /* Left boundary, right boundary and median element of our binary search. */ |
806 | unsigned bc_l, bc_r, bc; | |
807 | ||
808 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
809 | safe to report lower value but a failure to report higher one. */ | |
810 | ||
811 | bc_l = 0; | |
812 | bc_r = bp_location_count; | |
813 | while (bc_l + 1 < bc_r) | |
814 | { | |
815 | struct bp_location *b; | |
816 | ||
817 | bc = (bc_l + bc_r) / 2; | |
818 | b = bp_location[bc]; | |
819 | ||
820 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
821 | Then advance the left boundary only if we are sure the BC element can | |
822 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
823 | ||
824 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
825 | we cannot miss a breakpoint with its shadow range tail still reaching | |
826 | MEMADDR. */ | |
c5aa993b | 827 | |
876fa593 JK |
828 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
829 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
830 | bc_l = bc; | |
831 | else | |
832 | bc_r = bc; | |
833 | } | |
834 | ||
835 | /* Now do full processing of the found relevant range of elements. */ | |
836 | ||
837 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 838 | { |
876fa593 JK |
839 | struct bp_location *b = bp_location[bc]; |
840 | CORE_ADDR bp_addr = 0; | |
841 | int bp_size = 0; | |
842 | int bptoffset = 0; | |
843 | ||
ffce0d52 | 844 | if (b->owner->type == bp_none) |
8a3fe4f8 | 845 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
846 | b->owner->number); |
847 | ||
876fa593 JK |
848 | /* Performance optimization: any futher element can no longer affect BUF |
849 | content. */ | |
850 | ||
851 | if (b->address >= bp_location_placed_address_before_address_max | |
852 | && memaddr + len <= b->address | |
853 | - bp_location_placed_address_before_address_max) | |
854 | break; | |
855 | ||
856 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 857 | continue; |
6c95b8df PA |
858 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
859 | current_program_space->aspace, 0)) | |
860 | continue; | |
861 | ||
c5aa993b JM |
862 | /* Addresses and length of the part of the breakpoint that |
863 | we need to copy. */ | |
8181d85f DJ |
864 | bp_addr = b->target_info.placed_address; |
865 | bp_size = b->target_info.shadow_len; | |
8defab1a | 866 | |
c5aa993b JM |
867 | if (bp_addr + bp_size <= memaddr) |
868 | /* The breakpoint is entirely before the chunk of memory we | |
869 | are reading. */ | |
870 | continue; | |
8defab1a | 871 | |
c5aa993b JM |
872 | if (bp_addr >= memaddr + len) |
873 | /* The breakpoint is entirely after the chunk of memory we are | |
874 | reading. */ | |
875 | continue; | |
c5aa993b | 876 | |
8defab1a DJ |
877 | /* Offset within shadow_contents. */ |
878 | if (bp_addr < memaddr) | |
879 | { | |
880 | /* Only copy the second part of the breakpoint. */ | |
881 | bp_size -= memaddr - bp_addr; | |
882 | bptoffset = memaddr - bp_addr; | |
883 | bp_addr = memaddr; | |
884 | } | |
c5aa993b | 885 | |
8defab1a DJ |
886 | if (bp_addr + bp_size > memaddr + len) |
887 | { | |
888 | /* Only copy the first part of the breakpoint. */ | |
889 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
890 | } | |
c5aa993b | 891 | |
8defab1a DJ |
892 | memcpy (buf + bp_addr - memaddr, |
893 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 894 | } |
c906108c | 895 | } |
c906108c | 896 | \f |
c5aa993b | 897 | |
687595f9 | 898 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 899 | static void |
687595f9 DJ |
900 | insert_catchpoint (struct ui_out *uo, void *args) |
901 | { | |
902 | struct breakpoint *b = (struct breakpoint *) args; | |
903 | int val = -1; | |
904 | ||
fe798b75 JB |
905 | gdb_assert (b->type == bp_catchpoint); |
906 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
907 | ||
908 | b->ops->insert (b); | |
687595f9 DJ |
909 | } |
910 | ||
a5606eee VP |
911 | static int |
912 | is_hardware_watchpoint (struct breakpoint *bpt) | |
913 | { | |
914 | return (bpt->type == bp_hardware_watchpoint | |
915 | || bpt->type == bp_read_watchpoint | |
916 | || bpt->type == bp_access_watchpoint); | |
917 | } | |
7270d8f2 | 918 | |
fa4727a6 DJ |
919 | /* Find the current value of a watchpoint on EXP. Return the value in |
920 | *VALP and *RESULTP and the chain of intermediate and final values | |
921 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
922 | not need them. | |
923 | ||
ccc57cf9 | 924 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
925 | be set to NULL. *RESULTP may be a lazy value, if the result could |
926 | not be read from memory. It is used to determine whether a value | |
927 | is user-specified (we should watch the whole value) or intermediate | |
928 | (we should watch only the bit used to locate the final value). | |
929 | ||
930 | If the final value, or any intermediate value, could not be read | |
931 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
932 | set to any referenced values. *VALP will never be a lazy value. | |
933 | This is the value which we store in struct breakpoint. | |
934 | ||
935 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
936 | value chain. The caller must free the values individually. If | |
937 | VAL_CHAIN is NULL, all generated values will be left on the value | |
938 | chain. */ | |
939 | ||
940 | static void | |
941 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
942 | struct value **resultp, struct value **val_chain) | |
943 | { | |
944 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 945 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
946 | |
947 | *valp = NULL; | |
948 | if (resultp) | |
949 | *resultp = NULL; | |
950 | if (val_chain) | |
951 | *val_chain = NULL; | |
952 | ||
953 | /* Evaluate the expression. */ | |
954 | mark = value_mark (); | |
955 | result = NULL; | |
ccc57cf9 PA |
956 | |
957 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
958 | { | |
959 | result = evaluate_expression (exp); | |
960 | } | |
961 | if (ex.reason < 0) | |
962 | { | |
963 | /* Ignore memory errors, we want watchpoints pointing at | |
964 | inaccessible memory to still be created; otherwise, throw the | |
965 | error to some higher catcher. */ | |
966 | switch (ex.error) | |
967 | { | |
968 | case MEMORY_ERROR: | |
969 | break; | |
970 | default: | |
971 | throw_exception (ex); | |
972 | break; | |
973 | } | |
974 | } | |
975 | ||
fa4727a6 DJ |
976 | new_mark = value_mark (); |
977 | if (mark == new_mark) | |
978 | return; | |
979 | if (resultp) | |
980 | *resultp = result; | |
981 | ||
982 | /* Make sure it's not lazy, so that after the target stops again we | |
983 | have a non-lazy previous value to compare with. */ | |
984 | if (result != NULL | |
985 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
986 | *valp = result; | |
987 | ||
988 | if (val_chain) | |
989 | { | |
990 | /* Return the chain of intermediate values. We use this to | |
991 | decide which addresses to watch. */ | |
992 | *val_chain = new_mark; | |
993 | value_release_to_mark (mark); | |
994 | } | |
995 | } | |
996 | ||
f6bc2008 PA |
997 | /* Assuming that B is a watchpoint: returns true if the current thread |
998 | and its running state are safe to evaluate or update watchpoint B. | |
999 | Watchpoints on local expressions need to be evaluated in the | |
1000 | context of the thread that was current when the watchpoint was | |
1001 | created, and, that thread needs to be stopped to be able to select | |
1002 | the correct frame context. Watchpoints on global expressions can | |
1003 | be evaluated on any thread, and in any state. It is presently left | |
1004 | to the target allowing memory accesses when threads are | |
1005 | running. */ | |
1006 | ||
1007 | static int | |
1008 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1009 | { | |
1010 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1011 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1012 | && !is_executing (inferior_ptid))); | |
1013 | } | |
1014 | ||
567e1b4e JB |
1015 | /* Assuming that B is a watchpoint: |
1016 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1017 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1018 | - Evaluate the condition if there is one, and store the result |
1019 | in b->loc->cond. | |
a5606eee VP |
1020 | - Update the list of values that must be watched in B->loc. |
1021 | ||
bfa149ac | 1022 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1023 | If this is local watchpoint that is out of scope, delete it. |
1024 | ||
1025 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1026 | + inserted on each stop here. Normal breakpoints must never be removed | |
1027 | because they might be missed by a running thread when debugging in non-stop | |
1028 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1029 | processed here) are specific to each LWP since they are stored in each LWP's | |
1030 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1031 | order to be able to modify its hardware watchpoints. | |
1032 | ||
1033 | Hardware watchpoints must be reset exactly once after being presented to the | |
1034 | user. It cannot be done sooner, because it would reset the data used to | |
1035 | present the watchpoint hit to the user. And it must not be done later | |
1036 | because it could display the same single watchpoint hit during multiple GDB | |
1037 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1038 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1039 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1040 | memory content has not changed. | |
1041 | ||
1042 | The following constraints influence the location where we can reset hardware | |
1043 | watchpoints: | |
1044 | ||
1045 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1046 | several times when GDB stops. | |
1047 | ||
1048 | [linux] | |
1049 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1050 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1051 | reason for stopping, and all the other hits are presented later, one after | |
1052 | the other, each time the user requests the execution to be resumed. | |
1053 | Execution is not resumed for the threads still having pending hit event | |
1054 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1055 | the inferior on the first stop the thread hit event is kept being reported | |
1056 | from its cached value by linux_nat_stopped_data_address until the real | |
1057 | thread resume happens after the watchpoint gets presented and thus its | |
1058 | LWP_INFO->STATUS gets reset. | |
1059 | ||
1060 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1061 | removal from inferior. */ | |
1062 | ||
b40ce68a | 1063 | static void |
a5606eee | 1064 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1065 | { |
a5606eee | 1066 | int within_current_scope; |
a5606eee VP |
1067 | struct frame_id saved_frame_id; |
1068 | struct bp_location *loc; | |
66076460 | 1069 | int frame_saved; |
a5606eee VP |
1070 | bpstat bs; |
1071 | ||
f6bc2008 PA |
1072 | /* If this is a local watchpoint, we only want to check if the |
1073 | watchpoint frame is in scope if the current thread is the thread | |
1074 | that was used to create the watchpoint. */ | |
1075 | if (!watchpoint_in_thread_scope (b)) | |
1076 | return; | |
1077 | ||
876fa593 | 1078 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1079 | update_global_locations will eventually delete them and remove |
1080 | breakpoints if needed. */ | |
a5606eee VP |
1081 | b->loc = NULL; |
1082 | ||
1083 | if (b->disposition == disp_del_at_next_stop) | |
1084 | return; | |
1085 | ||
66076460 | 1086 | frame_saved = 0; |
a5606eee VP |
1087 | |
1088 | /* Determine if the watchpoint is within scope. */ | |
1089 | if (b->exp_valid_block == NULL) | |
1090 | within_current_scope = 1; | |
1091 | else | |
1092 | { | |
1093 | struct frame_info *fi; | |
66076460 DJ |
1094 | |
1095 | /* Save the current frame's ID so we can restore it after | |
1096 | evaluating the watchpoint expression on its own frame. */ | |
1097 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1098 | took a frame parameter, so that we didn't have to change the | |
1099 | selected frame. */ | |
1100 | frame_saved = 1; | |
1101 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1102 | ||
a5606eee VP |
1103 | fi = frame_find_by_id (b->watchpoint_frame); |
1104 | within_current_scope = (fi != NULL); | |
1105 | if (within_current_scope) | |
1106 | select_frame (fi); | |
1107 | } | |
1108 | ||
1109 | if (within_current_scope && reparse) | |
1110 | { | |
1111 | char *s; | |
1112 | if (b->exp) | |
1113 | { | |
1114 | xfree (b->exp); | |
1115 | b->exp = NULL; | |
1116 | } | |
1117 | s = b->exp_string; | |
1118 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1119 | /* If the meaning of expression itself changed, the old value is | |
1120 | no longer relevant. We don't want to report a watchpoint hit | |
1121 | to the user when the old value and the new value may actually | |
1122 | be completely different objects. */ | |
1123 | value_free (b->val); | |
fa4727a6 DJ |
1124 | b->val = NULL; |
1125 | b->val_valid = 0; | |
a5606eee | 1126 | } |
a5606eee VP |
1127 | |
1128 | /* If we failed to parse the expression, for example because | |
1129 | it refers to a global variable in a not-yet-loaded shared library, | |
1130 | don't try to insert watchpoint. We don't automatically delete | |
1131 | such watchpoint, though, since failure to parse expression | |
1132 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1133 | if ( !target_has_execution) |
1134 | { | |
1135 | /* Without execution, memory can't change. No use to try and | |
1136 | set watchpoint locations. The watchpoint will be reset when | |
1137 | the target gains execution, through breakpoint_re_set. */ | |
1138 | } | |
1139 | else if (within_current_scope && b->exp) | |
a5606eee | 1140 | { |
fa4727a6 | 1141 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1142 | struct program_space *frame_pspace; |
a5606eee | 1143 | |
fa4727a6 | 1144 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1145 | |
a5606eee VP |
1146 | /* Avoid setting b->val if it's already set. The meaning of |
1147 | b->val is 'the last value' user saw, and we should update | |
1148 | it only if we reported that last value to user. As it | |
1149 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1150 | if (!b->val_valid) |
1151 | { | |
1152 | b->val = v; | |
1153 | b->val_valid = 1; | |
1154 | } | |
a5606eee | 1155 | |
db2ad4c3 JK |
1156 | /* Change the type of breakpoint between hardware assisted or an |
1157 | ordinary watchpoint depending on the hardware support and free | |
1158 | hardware slots. REPARSE is set when the inferior is started. */ | |
1159 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1160 | && reparse) | |
1161 | { | |
ca2d49e8 | 1162 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1163 | |
7b838ca2 TJB |
1164 | /* We need to determine how many resources are already used |
1165 | for all other hardware watchpoints to see if we still have | |
1166 | enough resources to also fit this watchpoint in as well. | |
1167 | To avoid the hw_watchpoint_used_count call below from counting | |
1168 | this watchpoint, make sure that it is marked as a software | |
1169 | watchpoint. */ | |
1170 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1171 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1172 | &other_type_used); | |
1173 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1174 | ||
ca2d49e8 | 1175 | if (!mem_cnt) |
db2ad4c3 JK |
1176 | b->type = bp_watchpoint; |
1177 | else | |
ca2d49e8 | 1178 | { |
d92524f1 | 1179 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1180 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1181 | if (target_resources_ok <= 0) | |
1182 | b->type = bp_watchpoint; | |
1183 | else | |
1184 | b->type = bp_hardware_watchpoint; | |
1185 | } | |
db2ad4c3 JK |
1186 | } |
1187 | ||
2d134ed3 PA |
1188 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1189 | ||
a5606eee | 1190 | /* Look at each value on the value chain. */ |
fa4727a6 | 1191 | for (v = val_chain; v; v = next) |
a5606eee VP |
1192 | { |
1193 | /* If it's a memory location, and GDB actually needed | |
1194 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1195 | must watch it. If the first value returned is |
1196 | still lazy, that means an error occurred reading it; | |
1197 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1198 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1199 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1200 | { |
1201 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1202 | |
a5606eee VP |
1203 | /* We only watch structs and arrays if user asked |
1204 | for it explicitly, never if they just happen to | |
1205 | appear in the middle of some value chain. */ | |
fa4727a6 | 1206 | if (v == result |
a5606eee VP |
1207 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1208 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1209 | { | |
1210 | CORE_ADDR addr; | |
1211 | int len, type; | |
1212 | struct bp_location *loc, **tmp; | |
1213 | ||
42ae5230 | 1214 | addr = value_address (v); |
a5606eee VP |
1215 | len = TYPE_LENGTH (value_type (v)); |
1216 | type = hw_write; | |
1217 | if (b->type == bp_read_watchpoint) | |
1218 | type = hw_read; | |
1219 | else if (b->type == bp_access_watchpoint) | |
1220 | type = hw_access; | |
1221 | ||
39d61571 | 1222 | loc = allocate_bp_location (b); |
a5606eee VP |
1223 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1224 | ; | |
1225 | *tmp = loc; | |
a6d9a66e | 1226 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1227 | |
1228 | loc->pspace = frame_pspace; | |
a5606eee VP |
1229 | loc->address = addr; |
1230 | loc->length = len; | |
1231 | loc->watchpoint_type = type; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | next = value_next (v); | |
1236 | if (v != b->val) | |
1237 | value_free (v); | |
1238 | } | |
1239 | ||
2ec93238 MK |
1240 | /* We just regenerated the list of breakpoint locations. |
1241 | The new location does not have its condition field set to anything | |
1242 | and therefore, we must always reparse the cond_string, independently | |
1243 | of the value of the reparse flag. */ | |
1244 | if (b->cond_string != NULL) | |
a5606eee VP |
1245 | { |
1246 | char *s = b->cond_string; | |
a5606eee VP |
1247 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1248 | } | |
1249 | } | |
1250 | else if (!within_current_scope) | |
7270d8f2 | 1251 | { |
a5606eee | 1252 | printf_filtered (_("\ |
567e1b4e | 1253 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1254 | in which its expression is valid.\n"), |
1255 | b->number); | |
1256 | if (b->related_breakpoint) | |
1257 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1258 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1259 | } |
a5606eee VP |
1260 | |
1261 | /* Restore the selected frame. */ | |
66076460 DJ |
1262 | if (frame_saved) |
1263 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1264 | } |
1265 | ||
a5606eee | 1266 | |
74960c60 VP |
1267 | /* Returns 1 iff breakpoint location should be |
1268 | inserted in the inferior. */ | |
1269 | static int | |
1270 | should_be_inserted (struct bp_location *bpt) | |
1271 | { | |
1272 | if (!breakpoint_enabled (bpt->owner)) | |
1273 | return 0; | |
1274 | ||
1275 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1276 | return 0; | |
1277 | ||
1278 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1279 | return 0; | |
1280 | ||
56710373 PA |
1281 | /* This is set for example, when we're attached to the parent of a |
1282 | vfork, and have detached from the child. The child is running | |
1283 | free, and we expect it to do an exec or exit, at which point the | |
1284 | OS makes the parent schedulable again (and the target reports | |
1285 | that the vfork is done). Until the child is done with the shared | |
1286 | memory region, do not insert breakpoints in the parent, otherwise | |
1287 | the child could still trip on the parent's breakpoints. Since | |
1288 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1289 | if (bpt->pspace->breakpoints_not_allowed) | |
1290 | return 0; | |
1291 | ||
1042e4c0 SS |
1292 | /* Tracepoints are inserted by the target at a time of its choosing, |
1293 | not by us. */ | |
7a697b8d | 1294 | if (tracepoint_type (bpt->owner)) |
1042e4c0 SS |
1295 | return 0; |
1296 | ||
74960c60 VP |
1297 | return 1; |
1298 | } | |
1299 | ||
879bfdc2 DJ |
1300 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1301 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1302 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1303 | |
1304 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1305 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1306 | static int |
879bfdc2 | 1307 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1308 | struct ui_file *tmp_error_stream, |
fa3a767f | 1309 | int *disabled_breaks, |
26bb91f3 | 1310 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1311 | { |
1312 | int val = 0; | |
1313 | ||
74960c60 | 1314 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1315 | return 0; |
1316 | ||
8181d85f DJ |
1317 | /* Initialize the target-specific information. */ |
1318 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1319 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1320 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1321 | |
879bfdc2 DJ |
1322 | if (bpt->loc_type == bp_loc_software_breakpoint |
1323 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1324 | { | |
765dc015 VP |
1325 | if (bpt->owner->type != bp_hardware_breakpoint) |
1326 | { | |
1327 | /* If the explicitly specified breakpoint type | |
1328 | is not hardware breakpoint, check the memory map to see | |
1329 | if the breakpoint address is in read only memory or not. | |
1330 | Two important cases are: | |
1331 | - location type is not hardware breakpoint, memory | |
1332 | is readonly. We change the type of the location to | |
1333 | hardware breakpoint. | |
1334 | - location type is hardware breakpoint, memory is read-write. | |
1335 | This means we've previously made the location hardware one, but | |
1336 | then the memory map changed, so we undo. | |
1337 | ||
1338 | When breakpoints are removed, remove_breakpoints will | |
1339 | use location types we've just set here, the only possible | |
1340 | problem is that memory map has changed during running program, | |
1341 | but it's not going to work anyway with current gdb. */ | |
1342 | struct mem_region *mr | |
1343 | = lookup_mem_region (bpt->target_info.placed_address); | |
1344 | ||
1345 | if (mr) | |
1346 | { | |
1347 | if (automatic_hardware_breakpoints) | |
1348 | { | |
1349 | int changed = 0; | |
1350 | enum bp_loc_type new_type; | |
1351 | ||
1352 | if (mr->attrib.mode != MEM_RW) | |
1353 | new_type = bp_loc_hardware_breakpoint; | |
1354 | else | |
1355 | new_type = bp_loc_software_breakpoint; | |
1356 | ||
1357 | if (new_type != bpt->loc_type) | |
1358 | { | |
1359 | static int said = 0; | |
1360 | bpt->loc_type = new_type; | |
1361 | if (!said) | |
1362 | { | |
1363 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1364 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1365 | said = 1; |
1366 | } | |
1367 | } | |
1368 | } | |
1369 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1370 | && mr->attrib.mode != MEM_RW) | |
1371 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1372 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1373 | } |
1374 | } | |
1375 | ||
879bfdc2 DJ |
1376 | /* First check to see if we have to handle an overlay. */ |
1377 | if (overlay_debugging == ovly_off | |
1378 | || bpt->section == NULL | |
1379 | || !(section_is_overlay (bpt->section))) | |
1380 | { | |
1381 | /* No overlay handling: just set the breakpoint. */ | |
1382 | ||
1383 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1384 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1385 | &bpt->target_info); | |
879bfdc2 | 1386 | else |
a6d9a66e UW |
1387 | val = target_insert_breakpoint (bpt->gdbarch, |
1388 | &bpt->target_info); | |
879bfdc2 DJ |
1389 | } |
1390 | else | |
1391 | { | |
1392 | /* This breakpoint is in an overlay section. | |
1393 | Shall we set a breakpoint at the LMA? */ | |
1394 | if (!overlay_events_enabled) | |
1395 | { | |
1396 | /* Yes -- overlay event support is not active, | |
1397 | so we must try to set a breakpoint at the LMA. | |
1398 | This will not work for a hardware breakpoint. */ | |
1399 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1400 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1401 | bpt->owner->number); |
1402 | else | |
1403 | { | |
1404 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1405 | bpt->section); | |
1406 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1407 | bpt->overlay_target_info = bpt->target_info; |
1408 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1409 | val = target_insert_breakpoint (bpt->gdbarch, |
1410 | &bpt->overlay_target_info); | |
879bfdc2 | 1411 | if (val != 0) |
99361f52 DE |
1412 | fprintf_unfiltered (tmp_error_stream, |
1413 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1414 | bpt->owner->number); |
1415 | } | |
1416 | } | |
1417 | /* Shall we set a breakpoint at the VMA? */ | |
1418 | if (section_is_mapped (bpt->section)) | |
1419 | { | |
1420 | /* Yes. This overlay section is mapped into memory. */ | |
1421 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1422 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1423 | &bpt->target_info); | |
879bfdc2 | 1424 | else |
a6d9a66e UW |
1425 | val = target_insert_breakpoint (bpt->gdbarch, |
1426 | &bpt->target_info); | |
879bfdc2 DJ |
1427 | } |
1428 | else | |
1429 | { | |
1430 | /* No. This breakpoint will not be inserted. | |
1431 | No error, but do not mark the bp as 'inserted'. */ | |
1432 | return 0; | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if (val) | |
1437 | { | |
1438 | /* Can't set the breakpoint. */ | |
6c95b8df | 1439 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1440 | { |
1441 | /* See also: disable_breakpoints_in_shlibs. */ | |
1442 | val = 0; | |
0d381245 | 1443 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1444 | if (!*disabled_breaks) |
1445 | { | |
1446 | fprintf_unfiltered (tmp_error_stream, | |
1447 | "Cannot insert breakpoint %d.\n", | |
1448 | bpt->owner->number); | |
1449 | fprintf_unfiltered (tmp_error_stream, | |
1450 | "Temporarily disabling shared library breakpoints:\n"); | |
1451 | } | |
1452 | *disabled_breaks = 1; | |
1453 | fprintf_unfiltered (tmp_error_stream, | |
1454 | "breakpoint #%d\n", bpt->owner->number); | |
1455 | } | |
1456 | else | |
879bfdc2 | 1457 | { |
879bfdc2 DJ |
1458 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1459 | { | |
1460 | *hw_breakpoint_error = 1; | |
1461 | fprintf_unfiltered (tmp_error_stream, | |
1462 | "Cannot insert hardware breakpoint %d.\n", | |
1463 | bpt->owner->number); | |
1464 | } | |
1465 | else | |
1466 | { | |
1467 | fprintf_unfiltered (tmp_error_stream, | |
1468 | "Cannot insert breakpoint %d.\n", | |
1469 | bpt->owner->number); | |
1470 | fprintf_filtered (tmp_error_stream, | |
1471 | "Error accessing memory address "); | |
5af949e3 UW |
1472 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1473 | tmp_error_stream); | |
879bfdc2 DJ |
1474 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1475 | safe_strerror (val)); | |
1476 | } | |
1477 | ||
1478 | } | |
1479 | } | |
1480 | else | |
1481 | bpt->inserted = 1; | |
1482 | ||
1483 | return val; | |
1484 | } | |
1485 | ||
1486 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1487 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1488 | watchpoints. It's not clear that it's necessary... */ | |
1489 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1490 | { | |
85d721b8 | 1491 | val = target_insert_watchpoint (bpt->address, |
a5606eee VP |
1492 | bpt->length, |
1493 | bpt->watchpoint_type); | |
85d721b8 PA |
1494 | |
1495 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1496 | supported, try emulating one with an access watchpoint. */ | |
1497 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1498 | { | |
1499 | struct bp_location *loc, **loc_temp; | |
1500 | ||
1501 | /* But don't try to insert it, if there's already another | |
1502 | hw_access location that would be considered a duplicate | |
1503 | of this one. */ | |
1504 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1505 | if (loc != bpt | |
1506 | && loc->watchpoint_type == hw_access | |
1507 | && watchpoint_locations_match (bpt, loc)) | |
1508 | { | |
1509 | bpt->duplicate = 1; | |
1510 | bpt->inserted = 1; | |
1511 | bpt->target_info = loc->target_info; | |
1512 | bpt->watchpoint_type = hw_access; | |
1513 | val = 0; | |
1514 | break; | |
1515 | } | |
1516 | ||
1517 | if (val == 1) | |
1518 | { | |
1519 | val = target_insert_watchpoint (bpt->address, | |
1520 | bpt->length, | |
1521 | hw_access); | |
1522 | if (val == 0) | |
1523 | bpt->watchpoint_type = hw_access; | |
1524 | } | |
1525 | } | |
1526 | ||
1527 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1528 | } |
1529 | ||
fe798b75 | 1530 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1531 | { |
71fff37b AC |
1532 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1533 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1534 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1535 | bpt->owner->number); | |
1536 | if (e.reason < 0) | |
879bfdc2 DJ |
1537 | bpt->owner->enable_state = bp_disabled; |
1538 | else | |
1539 | bpt->inserted = 1; | |
1640b821 DJ |
1540 | |
1541 | /* We've already printed an error message if there was a problem | |
1542 | inserting this catchpoint, and we've disabled the catchpoint, | |
1543 | so just return success. */ | |
1544 | return 0; | |
879bfdc2 DJ |
1545 | } |
1546 | ||
1547 | return 0; | |
1548 | } | |
1549 | ||
6c95b8df PA |
1550 | /* This function is called when program space PSPACE is about to be |
1551 | deleted. It takes care of updating breakpoints to not reference | |
1552 | PSPACE anymore. */ | |
1553 | ||
1554 | void | |
1555 | breakpoint_program_space_exit (struct program_space *pspace) | |
1556 | { | |
1557 | struct breakpoint *b, *b_temp; | |
876fa593 | 1558 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1559 | |
1560 | /* Remove any breakpoint that was set through this program space. */ | |
1561 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1562 | { | |
1563 | if (b->pspace == pspace) | |
1564 | delete_breakpoint (b); | |
1565 | } | |
1566 | ||
1567 | /* Breakpoints set through other program spaces could have locations | |
1568 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1569 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1570 | { |
1571 | struct bp_location *tmp; | |
1572 | ||
1573 | if (loc->pspace == pspace) | |
1574 | { | |
1575 | if (loc->owner->loc == loc) | |
1576 | loc->owner->loc = loc->next; | |
1577 | else | |
1578 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1579 | if (tmp->next == loc) | |
1580 | { | |
1581 | tmp->next = loc->next; | |
1582 | break; | |
1583 | } | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | /* Now update the global location list to permanently delete the | |
1588 | removed locations above. */ | |
1589 | update_global_location_list (0); | |
1590 | } | |
1591 | ||
74960c60 VP |
1592 | /* Make sure all breakpoints are inserted in inferior. |
1593 | Throws exception on any error. | |
1594 | A breakpoint that is already inserted won't be inserted | |
1595 | again, so calling this function twice is safe. */ | |
1596 | void | |
1597 | insert_breakpoints (void) | |
1598 | { | |
1599 | struct breakpoint *bpt; | |
1600 | ||
1601 | ALL_BREAKPOINTS (bpt) | |
1602 | if (is_hardware_watchpoint (bpt)) | |
1603 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1604 | ||
b60e7edf | 1605 | update_global_location_list (1); |
74960c60 | 1606 | |
c35b1492 PA |
1607 | /* update_global_location_list does not insert breakpoints when |
1608 | always_inserted_mode is not enabled. Explicitly insert them | |
1609 | now. */ | |
1610 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1611 | insert_breakpoint_locations (); |
1612 | } | |
1613 | ||
c906108c SS |
1614 | /* insert_breakpoints is used when starting or continuing the program. |
1615 | remove_breakpoints is used when the program stops. | |
1616 | Both return zero if successful, | |
1617 | or an `errno' value if could not write the inferior. */ | |
1618 | ||
74960c60 VP |
1619 | static void |
1620 | insert_breakpoint_locations (void) | |
c906108c | 1621 | { |
a5606eee | 1622 | struct breakpoint *bpt; |
876fa593 | 1623 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1624 | int error = 0; |
c906108c SS |
1625 | int val = 0; |
1626 | int disabled_breaks = 0; | |
81d0cc19 | 1627 | int hw_breakpoint_error = 0; |
c906108c | 1628 | |
81d0cc19 | 1629 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1630 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1631 | |
81d0cc19 GS |
1632 | /* Explicitly mark the warning -- this will only be printed if |
1633 | there was an error. */ | |
1634 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1635 | |
1636 | save_current_space_and_thread (); | |
1637 | ||
876fa593 | 1638 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1639 | { |
6c95b8df PA |
1640 | struct thread_info *tp; |
1641 | CORE_ADDR last_addr; | |
1642 | ||
74960c60 | 1643 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1644 | continue; |
1645 | ||
f365de73 AS |
1646 | /* There is no point inserting thread-specific breakpoints if the |
1647 | thread no longer exists. */ | |
1648 | if (b->owner->thread != -1 | |
1649 | && !valid_thread_id (b->owner->thread)) | |
1650 | continue; | |
1651 | ||
6c95b8df PA |
1652 | switch_to_program_space_and_thread (b->pspace); |
1653 | ||
1654 | /* For targets that support global breakpoints, there's no need | |
1655 | to select an inferior to insert breakpoint to. In fact, even | |
1656 | if we aren't attached to any process yet, we should still | |
1657 | insert breakpoints. */ | |
1658 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1659 | && ptid_equal (inferior_ptid, null_ptid)) | |
1660 | continue; | |
1661 | ||
879bfdc2 | 1662 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1663 | &disabled_breaks, |
879bfdc2 DJ |
1664 | &hw_breakpoint_error); |
1665 | if (val) | |
e236ba44 | 1666 | error = val; |
879bfdc2 | 1667 | } |
c906108c | 1668 | |
a5606eee VP |
1669 | /* If we failed to insert all locations of a watchpoint, |
1670 | remove them, as half-inserted watchpoint is of limited use. */ | |
1671 | ALL_BREAKPOINTS (bpt) | |
1672 | { | |
1673 | int some_failed = 0; | |
1674 | struct bp_location *loc; | |
1675 | ||
1676 | if (!is_hardware_watchpoint (bpt)) | |
1677 | continue; | |
1678 | ||
d6b74ac4 | 1679 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1680 | continue; |
74960c60 VP |
1681 | |
1682 | if (bpt->disposition == disp_del_at_next_stop) | |
1683 | continue; | |
a5606eee VP |
1684 | |
1685 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1686 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1687 | { |
1688 | some_failed = 1; | |
1689 | break; | |
1690 | } | |
1691 | if (some_failed) | |
1692 | { | |
1693 | for (loc = bpt->loc; loc; loc = loc->next) | |
1694 | if (loc->inserted) | |
1695 | remove_breakpoint (loc, mark_uninserted); | |
1696 | ||
1697 | hw_breakpoint_error = 1; | |
1698 | fprintf_unfiltered (tmp_error_stream, | |
1699 | "Could not insert hardware watchpoint %d.\n", | |
1700 | bpt->number); | |
1701 | error = -1; | |
1702 | } | |
1703 | } | |
1704 | ||
e236ba44 | 1705 | if (error) |
81d0cc19 GS |
1706 | { |
1707 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1708 | message about possibly exhausted resources. */ | |
879bfdc2 | 1709 | if (hw_breakpoint_error) |
81d0cc19 | 1710 | { |
c6510018 MS |
1711 | fprintf_unfiltered (tmp_error_stream, |
1712 | "Could not insert hardware breakpoints:\n\ | |
1713 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1714 | } |
81d0cc19 GS |
1715 | target_terminal_ours_for_output (); |
1716 | error_stream (tmp_error_stream); | |
1717 | } | |
f7545552 TT |
1718 | |
1719 | do_cleanups (cleanups); | |
c906108c SS |
1720 | } |
1721 | ||
c906108c | 1722 | int |
fba45db2 | 1723 | remove_breakpoints (void) |
c906108c | 1724 | { |
876fa593 | 1725 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1726 | int val = 0; |
c906108c | 1727 | |
876fa593 | 1728 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 1729 | { |
0bde7532 | 1730 | if (b->inserted) |
3a1bae8e | 1731 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 1732 | } |
3a1bae8e | 1733 | return val; |
c906108c SS |
1734 | } |
1735 | ||
6c95b8df PA |
1736 | /* Remove breakpoints of process PID. */ |
1737 | ||
1738 | int | |
1739 | remove_breakpoints_pid (int pid) | |
1740 | { | |
876fa593 | 1741 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
1742 | int val; |
1743 | struct inferior *inf = find_inferior_pid (pid); | |
1744 | ||
876fa593 | 1745 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
1746 | { |
1747 | if (b->pspace != inf->pspace) | |
1748 | continue; | |
1749 | ||
1750 | if (b->inserted) | |
1751 | { | |
1752 | val = remove_breakpoint (b, mark_uninserted); | |
1753 | if (val != 0) | |
1754 | return val; | |
1755 | } | |
1756 | } | |
1757 | return 0; | |
1758 | } | |
1759 | ||
692590c1 | 1760 | int |
80ce1ecb | 1761 | remove_hw_watchpoints (void) |
692590c1 | 1762 | { |
876fa593 | 1763 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1764 | int val = 0; |
692590c1 | 1765 | |
876fa593 | 1766 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 1767 | { |
0bde7532 | 1768 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 1769 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 1770 | } |
3a1bae8e | 1771 | return val; |
692590c1 MS |
1772 | } |
1773 | ||
c906108c | 1774 | int |
fba45db2 | 1775 | reattach_breakpoints (int pid) |
c906108c | 1776 | { |
6c95b8df | 1777 | struct cleanup *old_chain; |
876fa593 | 1778 | struct bp_location *b, **bp_tmp; |
c906108c | 1779 | int val; |
a4954f26 | 1780 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1781 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
1782 | struct inferior *inf; |
1783 | struct thread_info *tp; | |
1784 | ||
1785 | tp = any_live_thread_of_process (pid); | |
1786 | if (tp == NULL) | |
1787 | return 1; | |
1788 | ||
1789 | inf = find_inferior_pid (pid); | |
1790 | old_chain = save_inferior_ptid (); | |
1791 | ||
1792 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
1793 | |
1794 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1795 | |
876fa593 | 1796 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 1797 | { |
6c95b8df PA |
1798 | if (b->pspace != inf->pspace) |
1799 | continue; | |
1800 | ||
0bde7532 | 1801 | if (b->inserted) |
c5aa993b | 1802 | { |
a4954f26 DJ |
1803 | b->inserted = 0; |
1804 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1805 | &dummy1, &dummy2); |
c5aa993b JM |
1806 | if (val != 0) |
1807 | { | |
ce696e05 | 1808 | do_cleanups (old_chain); |
c5aa993b JM |
1809 | return val; |
1810 | } | |
1811 | } | |
1812 | } | |
ce696e05 | 1813 | do_cleanups (old_chain); |
c906108c SS |
1814 | return 0; |
1815 | } | |
1816 | ||
e58b0e63 PA |
1817 | static int internal_breakpoint_number = -1; |
1818 | ||
e62c965a | 1819 | static struct breakpoint * |
a6d9a66e UW |
1820 | create_internal_breakpoint (struct gdbarch *gdbarch, |
1821 | CORE_ADDR address, enum bptype type) | |
e62c965a | 1822 | { |
e62c965a PP |
1823 | struct symtab_and_line sal; |
1824 | struct breakpoint *b; | |
1825 | ||
1826 | init_sal (&sal); /* initialize to zeroes */ | |
1827 | ||
1828 | sal.pc = address; | |
1829 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 1830 | sal.pspace = current_program_space; |
e62c965a | 1831 | |
a6d9a66e | 1832 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
1833 | b->number = internal_breakpoint_number--; |
1834 | b->disposition = disp_donttouch; | |
1835 | ||
1836 | return b; | |
1837 | } | |
1838 | ||
1839 | static void | |
69de3c6a | 1840 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1841 | { |
69de3c6a | 1842 | struct objfile *objfile; |
e62c965a | 1843 | |
69de3c6a PP |
1844 | ALL_OBJFILES (objfile) |
1845 | { | |
1846 | struct breakpoint *b; | |
1847 | struct minimal_symbol *m; | |
1848 | ||
1849 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1850 | if (m == NULL) | |
1851 | continue; | |
e62c965a | 1852 | |
a6d9a66e UW |
1853 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1854 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
1855 | bp_overlay_event); |
1856 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1857 | |
69de3c6a PP |
1858 | if (overlay_debugging == ovly_auto) |
1859 | { | |
1860 | b->enable_state = bp_enabled; | |
1861 | overlay_events_enabled = 1; | |
1862 | } | |
1863 | else | |
1864 | { | |
1865 | b->enable_state = bp_disabled; | |
1866 | overlay_events_enabled = 0; | |
1867 | } | |
e62c965a PP |
1868 | } |
1869 | update_global_location_list (1); | |
1870 | } | |
1871 | ||
0fd8e87f UW |
1872 | static void |
1873 | create_longjmp_master_breakpoint (char *func_name) | |
1874 | { | |
6c95b8df | 1875 | struct program_space *pspace; |
0fd8e87f | 1876 | struct objfile *objfile; |
6c95b8df PA |
1877 | struct cleanup *old_chain; |
1878 | ||
1879 | old_chain = save_current_program_space (); | |
0fd8e87f | 1880 | |
6c95b8df | 1881 | ALL_PSPACES (pspace) |
0fd8e87f UW |
1882 | ALL_OBJFILES (objfile) |
1883 | { | |
1884 | struct breakpoint *b; | |
1885 | struct minimal_symbol *m; | |
1886 | ||
1887 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
1888 | continue; | |
1889 | ||
6c95b8df PA |
1890 | set_current_program_space (pspace); |
1891 | ||
0fd8e87f UW |
1892 | m = lookup_minimal_symbol_text (func_name, objfile); |
1893 | if (m == NULL) | |
1894 | continue; | |
1895 | ||
a6d9a66e UW |
1896 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1897 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
1898 | bp_longjmp_master); |
1899 | b->addr_string = xstrdup (func_name); | |
1900 | b->enable_state = bp_disabled; | |
1901 | } | |
1902 | update_global_location_list (1); | |
6c95b8df PA |
1903 | |
1904 | do_cleanups (old_chain); | |
0fd8e87f UW |
1905 | } |
1906 | ||
c906108c | 1907 | void |
fba45db2 | 1908 | update_breakpoints_after_exec (void) |
c906108c | 1909 | { |
c5aa993b JM |
1910 | struct breakpoint *b; |
1911 | struct breakpoint *temp; | |
876fa593 | 1912 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 1913 | |
25b22b0a PA |
1914 | /* We're about to delete breakpoints from GDB's lists. If the |
1915 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1916 | writing the breakpoints' "shadow contents" back into memory. The | |
1917 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1918 | do that. Instead, the target is responsible from marking | |
1919 | breakpoints out as soon as it detects an exec. We don't do that | |
1920 | here instead, because there may be other attempts to delete | |
1921 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 1922 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
1923 | if (bploc->pspace == current_program_space) |
1924 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1925 | |
1926 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 1927 | { |
6c95b8df PA |
1928 | if (b->pspace != current_program_space) |
1929 | continue; | |
1930 | ||
c5aa993b JM |
1931 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
1932 | if (b->type == bp_shlib_event) | |
1933 | { | |
1934 | delete_breakpoint (b); | |
1935 | continue; | |
1936 | } | |
c906108c | 1937 | |
4efc6507 DE |
1938 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
1939 | if (b->type == bp_jit_event) | |
1940 | { | |
1941 | delete_breakpoint (b); | |
1942 | continue; | |
1943 | } | |
1944 | ||
1900040c | 1945 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
1946 | as must overlay event and longjmp master breakpoints. */ |
1947 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
1948 | || b->type == bp_longjmp_master) | |
c4093a6a JM |
1949 | { |
1950 | delete_breakpoint (b); | |
1951 | continue; | |
1952 | } | |
1953 | ||
c5aa993b JM |
1954 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1955 | if (b->type == bp_step_resume) | |
1956 | { | |
1957 | delete_breakpoint (b); | |
1958 | continue; | |
1959 | } | |
1960 | ||
611c83ae PA |
1961 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1962 | after an exec. */ | |
1963 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1964 | { | |
1965 | delete_breakpoint (b); | |
1966 | continue; | |
1967 | } | |
1968 | ||
ce78b96d JB |
1969 | if (b->type == bp_catchpoint) |
1970 | { | |
1971 | /* For now, none of the bp_catchpoint breakpoints need to | |
1972 | do anything at this point. In the future, if some of | |
1973 | the catchpoints need to something, we will need to add | |
1974 | a new method, and call this method from here. */ | |
1975 | continue; | |
1976 | } | |
1977 | ||
c5aa993b JM |
1978 | /* bp_finish is a special case. The only way we ought to be able |
1979 | to see one of these when an exec() has happened, is if the user | |
1980 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1981 | carries them to the call-site of the current callee, by setting | |
1982 | a temporary bp there and resuming. But in this case, the finish | |
1983 | will carry them entirely through the vfork & exec. | |
1984 | ||
1985 | We don't want to allow a bp_finish to remain inserted now. But | |
1986 | we can't safely delete it, 'cause finish_command has a handle to | |
1987 | the bp on a bpstat, and will later want to delete it. There's a | |
1988 | chance (and I've seen it happen) that if we delete the bp_finish | |
1989 | here, that its storage will get reused by the time finish_command | |
1990 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1991 | We really must allow finish_command to delete a bp_finish. | |
1992 | ||
53a5351d JM |
1993 | In the absense of a general solution for the "how do we know |
1994 | it's safe to delete something others may have handles to?" | |
1995 | problem, what we'll do here is just uninsert the bp_finish, and | |
1996 | let finish_command delete it. | |
1997 | ||
1998 | (We know the bp_finish is "doomed" in the sense that it's | |
1999 | momentary, and will be deleted as soon as finish_command sees | |
2000 | the inferior stopped. So it doesn't matter that the bp's | |
2001 | address is probably bogus in the new a.out, unlike e.g., the | |
2002 | solib breakpoints.) */ | |
c5aa993b | 2003 | |
c5aa993b JM |
2004 | if (b->type == bp_finish) |
2005 | { | |
2006 | continue; | |
2007 | } | |
2008 | ||
2009 | /* Without a symbolic address, we have little hope of the | |
2010 | pre-exec() address meaning the same thing in the post-exec() | |
2011 | a.out. */ | |
2012 | if (b->addr_string == NULL) | |
2013 | { | |
2014 | delete_breakpoint (b); | |
2015 | continue; | |
2016 | } | |
c5aa993b | 2017 | } |
1900040c | 2018 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2019 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2020 | create_longjmp_master_breakpoint ("longjmp"); |
2021 | create_longjmp_master_breakpoint ("_longjmp"); | |
2022 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2023 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
2024 | } |
2025 | ||
2026 | int | |
fba45db2 | 2027 | detach_breakpoints (int pid) |
c906108c | 2028 | { |
876fa593 | 2029 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2030 | int val = 0; |
ce696e05 | 2031 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2032 | struct inferior *inf = current_inferior (); |
c5aa993b | 2033 | |
39f77062 | 2034 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2035 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2036 | |
6c95b8df | 2037 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2038 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2039 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2040 | { |
6c95b8df PA |
2041 | if (b->pspace != inf->pspace) |
2042 | continue; | |
2043 | ||
0bde7532 | 2044 | if (b->inserted) |
6c95b8df | 2045 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2046 | } |
ce696e05 | 2047 | do_cleanups (old_chain); |
3a1bae8e | 2048 | return val; |
c906108c SS |
2049 | } |
2050 | ||
6c95b8df PA |
2051 | /* Remove the breakpoint location B from the current address space. |
2052 | Note that this is used to detach breakpoints from a child fork. | |
2053 | When we get here, the child isn't in the inferior list, and neither | |
2054 | do we have objects to represent its address space --- we should | |
2055 | *not* look at b->pspace->aspace here. */ | |
2056 | ||
c906108c | 2057 | static int |
6c95b8df | 2058 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2059 | { |
2060 | int val; | |
6c95b8df | 2061 | struct cleanup *old_chain; |
c5aa993b | 2062 | |
0bde7532 | 2063 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2064 | /* Permanent breakpoints cannot be inserted or removed. */ |
2065 | return 0; | |
2066 | ||
74960c60 VP |
2067 | /* The type of none suggests that owner is actually deleted. |
2068 | This should not ever happen. */ | |
2069 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2070 | |
2071 | if (b->loc_type == bp_loc_software_breakpoint | |
2072 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2073 | { |
c02f5703 MS |
2074 | /* "Normal" instruction breakpoint: either the standard |
2075 | trap-instruction bp (bp_breakpoint), or a | |
2076 | bp_hardware_breakpoint. */ | |
2077 | ||
2078 | /* First check to see if we have to handle an overlay. */ | |
2079 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2080 | || b->section == NULL |
2081 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2082 | { |
2083 | /* No overlay handling: just remove the breakpoint. */ | |
2084 | ||
0bde7532 | 2085 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2086 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2087 | else |
a6d9a66e | 2088 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2089 | } |
c906108c SS |
2090 | else |
2091 | { | |
c02f5703 MS |
2092 | /* This breakpoint is in an overlay section. |
2093 | Did we set a breakpoint at the LMA? */ | |
2094 | if (!overlay_events_enabled) | |
2095 | { | |
2096 | /* Yes -- overlay event support is not active, so we | |
2097 | should have set a breakpoint at the LMA. Remove it. | |
2098 | */ | |
c02f5703 MS |
2099 | /* Ignore any failures: if the LMA is in ROM, we will |
2100 | have already warned when we failed to insert it. */ | |
0bde7532 | 2101 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2102 | target_remove_hw_breakpoint (b->gdbarch, |
2103 | &b->overlay_target_info); | |
c02f5703 | 2104 | else |
a6d9a66e UW |
2105 | target_remove_breakpoint (b->gdbarch, |
2106 | &b->overlay_target_info); | |
c02f5703 MS |
2107 | } |
2108 | /* Did we set a breakpoint at the VMA? | |
2109 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2110 | if (b->inserted) |
c906108c | 2111 | { |
c02f5703 MS |
2112 | /* Yes -- remove it. Previously we did not bother to |
2113 | remove the breakpoint if the section had been | |
2114 | unmapped, but let's not rely on that being safe. We | |
2115 | don't know what the overlay manager might do. */ | |
0bde7532 | 2116 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2117 | val = target_remove_hw_breakpoint (b->gdbarch, |
2118 | &b->target_info); | |
aa67235e UW |
2119 | |
2120 | /* However, we should remove *software* breakpoints only | |
2121 | if the section is still mapped, or else we overwrite | |
2122 | wrong code with the saved shadow contents. */ | |
2123 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2124 | val = target_remove_breakpoint (b->gdbarch, |
2125 | &b->target_info); | |
aa67235e UW |
2126 | else |
2127 | val = 0; | |
c906108c | 2128 | } |
c02f5703 MS |
2129 | else |
2130 | { | |
2131 | /* No -- not inserted, so no need to remove. No error. */ | |
2132 | val = 0; | |
2133 | } | |
c906108c | 2134 | } |
879d1e6b UW |
2135 | |
2136 | /* In some cases, we might not be able to remove a breakpoint | |
2137 | in a shared library that has already been removed, but we | |
2138 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2139 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2140 | val = 0; |
2141 | ||
c906108c SS |
2142 | if (val) |
2143 | return val; | |
0bde7532 | 2144 | b->inserted = (is == mark_inserted); |
c906108c | 2145 | } |
a5606eee | 2146 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2147 | { |
278cd55f AC |
2148 | struct value *v; |
2149 | struct value *n; | |
c5aa993b | 2150 | |
0bde7532 | 2151 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2152 | val = target_remove_watchpoint (b->address, b->length, |
2153 | b->watchpoint_type); | |
2e70b7b9 | 2154 | |
c906108c | 2155 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2156 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2157 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2158 | b->owner->number); |
c906108c | 2159 | } |
ce78b96d JB |
2160 | else if (b->owner->type == bp_catchpoint |
2161 | && breakpoint_enabled (b->owner) | |
2162 | && !b->duplicate) | |
2163 | { | |
2164 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2165 | ||
2166 | val = b->owner->ops->remove (b->owner); | |
2167 | if (val) | |
2168 | return val; | |
2169 | b->inserted = (is == mark_inserted); | |
2170 | } | |
c906108c SS |
2171 | |
2172 | return 0; | |
2173 | } | |
2174 | ||
6c95b8df PA |
2175 | static int |
2176 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2177 | { | |
2178 | int ret; | |
2179 | struct cleanup *old_chain; | |
2180 | ||
2181 | if (b->owner->enable_state == bp_permanent) | |
2182 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2183 | return 0; | |
2184 | ||
2185 | /* The type of none suggests that owner is actually deleted. | |
2186 | This should not ever happen. */ | |
2187 | gdb_assert (b->owner->type != bp_none); | |
2188 | ||
2189 | old_chain = save_current_space_and_thread (); | |
2190 | ||
2191 | switch_to_program_space_and_thread (b->pspace); | |
2192 | ||
2193 | ret = remove_breakpoint_1 (b, is); | |
2194 | ||
2195 | do_cleanups (old_chain); | |
2196 | return ret; | |
2197 | } | |
2198 | ||
c906108c SS |
2199 | /* Clear the "inserted" flag in all breakpoints. */ |
2200 | ||
25b22b0a | 2201 | void |
fba45db2 | 2202 | mark_breakpoints_out (void) |
c906108c | 2203 | { |
876fa593 | 2204 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2205 | |
876fa593 | 2206 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2207 | if (bpt->pspace == current_program_space) |
2208 | bpt->inserted = 0; | |
c906108c SS |
2209 | } |
2210 | ||
53a5351d JM |
2211 | /* Clear the "inserted" flag in all breakpoints and delete any |
2212 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2213 | |
2214 | Plus other such housekeeping that has to be done for breakpoints | |
2215 | between runs. | |
2216 | ||
53a5351d JM |
2217 | Note: this function gets called at the end of a run (by |
2218 | generic_mourn_inferior) and when a run begins (by | |
2219 | init_wait_for_inferior). */ | |
c906108c SS |
2220 | |
2221 | ||
2222 | ||
2223 | void | |
fba45db2 | 2224 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2225 | { |
52f0bd74 | 2226 | struct breakpoint *b, *temp; |
876fa593 | 2227 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2228 | int ix; |
6c95b8df | 2229 | struct program_space *pspace = current_program_space; |
c906108c | 2230 | |
50c71eaf PA |
2231 | /* If breakpoint locations are shared across processes, then there's |
2232 | nothing to do. */ | |
2567c7d9 | 2233 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2234 | return; |
2235 | ||
876fa593 | 2236 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2237 | { |
2238 | if (bpt->pspace == pspace | |
2239 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2240 | bpt->inserted = 0; |
6c95b8df | 2241 | } |
075f6582 | 2242 | |
c906108c | 2243 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2244 | { |
6c95b8df PA |
2245 | if (b->loc && b->loc->pspace != pspace) |
2246 | continue; | |
2247 | ||
c5aa993b JM |
2248 | switch (b->type) |
2249 | { | |
2250 | case bp_call_dummy: | |
c906108c | 2251 | |
c5aa993b | 2252 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2253 | cause problems when the inferior is rerun, so we better get |
2254 | rid of it. */ | |
2255 | ||
2256 | case bp_watchpoint_scope: | |
2257 | ||
2258 | /* Also get rid of scope breakpoints. */ | |
2259 | ||
2260 | case bp_shlib_event: | |
2261 | ||
2262 | /* Also remove solib event breakpoints. Their addresses may | |
2263 | have changed since the last time we ran the program. | |
2264 | Actually we may now be debugging against different target; | |
2265 | and so the solib backend that installed this breakpoint may | |
2266 | not be used in by the target. E.g., | |
2267 | ||
2268 | (gdb) file prog-linux | |
2269 | (gdb) run # native linux target | |
2270 | ... | |
2271 | (gdb) kill | |
2272 | (gdb) file prog-win.exe | |
2273 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2274 | */ | |
c906108c | 2275 | |
c5aa993b JM |
2276 | delete_breakpoint (b); |
2277 | break; | |
c906108c | 2278 | |
c5aa993b JM |
2279 | case bp_watchpoint: |
2280 | case bp_hardware_watchpoint: | |
2281 | case bp_read_watchpoint: | |
2282 | case bp_access_watchpoint: | |
c906108c | 2283 | |
c5aa993b JM |
2284 | /* Likewise for watchpoints on local expressions. */ |
2285 | if (b->exp_valid_block != NULL) | |
2286 | delete_breakpoint (b); | |
967af18d | 2287 | else if (context == inf_starting) |
c860120c PM |
2288 | { |
2289 | /* Reset val field to force reread of starting value | |
2290 | in insert_breakpoints. */ | |
2291 | if (b->val) | |
2292 | value_free (b->val); | |
2293 | b->val = NULL; | |
fa4727a6 | 2294 | b->val_valid = 0; |
c860120c | 2295 | } |
c5aa993b JM |
2296 | break; |
2297 | default: | |
c5aa993b JM |
2298 | break; |
2299 | } | |
2300 | } | |
1c5cfe86 PA |
2301 | |
2302 | /* Get rid of the moribund locations. */ | |
2303 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2304 | free_bp_location (bpt); | |
2305 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2306 | } |
2307 | ||
6c95b8df PA |
2308 | /* These functions concern about actual breakpoints inserted in the |
2309 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2310 | we need to hop over the bkpt --- so we check for address space | |
2311 | match, not program space. */ | |
2312 | ||
c2c6d25f JM |
2313 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2314 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2315 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2316 | permanent breakpoint. | |
2317 | - When continuing from a location with an ordinary breakpoint, we | |
2318 | actually single step once before calling insert_breakpoints. | |
2319 | - When continuing from a localion with a permanent breakpoint, we | |
2320 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2321 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2322 | |
c2c6d25f | 2323 | enum breakpoint_here |
6c95b8df | 2324 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2325 | { |
876fa593 | 2326 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2327 | int any_breakpoint_here = 0; |
c906108c | 2328 | |
876fa593 | 2329 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2330 | { |
2331 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2332 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2333 | continue; | |
2334 | ||
468d015d | 2335 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2336 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2337 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2338 | aspace, pc)) | |
075f6582 DJ |
2339 | { |
2340 | if (overlay_debugging | |
2341 | && section_is_overlay (bpt->section) | |
2342 | && !section_is_mapped (bpt->section)) | |
2343 | continue; /* unmapped overlay -- can't be a match */ | |
2344 | else if (bpt->owner->enable_state == bp_permanent) | |
2345 | return permanent_breakpoint_here; | |
2346 | else | |
2347 | any_breakpoint_here = 1; | |
2348 | } | |
2349 | } | |
c906108c | 2350 | |
c2c6d25f | 2351 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2352 | } |
2353 | ||
1c5cfe86 PA |
2354 | /* Return true if there's a moribund breakpoint at PC. */ |
2355 | ||
2356 | int | |
6c95b8df | 2357 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2358 | { |
2359 | struct bp_location *loc; | |
2360 | int ix; | |
2361 | ||
2362 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2363 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2364 | aspace, pc)) | |
1c5cfe86 PA |
2365 | return 1; |
2366 | ||
2367 | return 0; | |
2368 | } | |
c2c6d25f | 2369 | |
c36b740a | 2370 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2371 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2372 | This does not check for single-step breakpoints, which are |
2373 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2374 | |
2375 | int | |
6c95b8df | 2376 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2377 | { |
876fa593 | 2378 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2379 | |
876fa593 | 2380 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2381 | { |
075f6582 DJ |
2382 | if (bpt->loc_type != bp_loc_software_breakpoint |
2383 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2384 | continue; | |
2385 | ||
2386 | if (bpt->inserted | |
6c95b8df PA |
2387 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2388 | aspace, pc)) | |
075f6582 DJ |
2389 | { |
2390 | if (overlay_debugging | |
2391 | && section_is_overlay (bpt->section) | |
2392 | && !section_is_mapped (bpt->section)) | |
2393 | continue; /* unmapped overlay -- can't be a match */ | |
2394 | else | |
2395 | return 1; | |
2396 | } | |
c5aa993b | 2397 | } |
c36b740a VP |
2398 | return 0; |
2399 | } | |
2400 | ||
2401 | /* Returns non-zero iff there's either regular breakpoint | |
2402 | or a single step breakpoint inserted at PC. */ | |
2403 | ||
2404 | int | |
6c95b8df | 2405 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2406 | { |
6c95b8df | 2407 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2408 | return 1; |
c906108c | 2409 | |
6c95b8df | 2410 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2411 | return 1; |
2412 | ||
c906108c SS |
2413 | return 0; |
2414 | } | |
2415 | ||
4fa8626c DJ |
2416 | /* This function returns non-zero iff there is a software breakpoint |
2417 | inserted at PC. */ | |
2418 | ||
2419 | int | |
6c95b8df | 2420 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2421 | { |
876fa593 | 2422 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c DJ |
2423 | int any_breakpoint_here = 0; |
2424 | ||
876fa593 | 2425 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2426 | { |
2427 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2428 | continue; | |
2429 | ||
0d381245 | 2430 | if (bpt->inserted |
6c95b8df PA |
2431 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2432 | aspace, pc)) | |
4fa8626c DJ |
2433 | { |
2434 | if (overlay_debugging | |
2435 | && section_is_overlay (bpt->section) | |
2436 | && !section_is_mapped (bpt->section)) | |
2437 | continue; /* unmapped overlay -- can't be a match */ | |
2438 | else | |
2439 | return 1; | |
2440 | } | |
2441 | } | |
2442 | ||
1aafd4da | 2443 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2444 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2445 | return 1; |
2446 | ||
4fa8626c DJ |
2447 | return 0; |
2448 | } | |
2449 | ||
9093389c PA |
2450 | int |
2451 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2452 | CORE_ADDR addr, ULONGEST len) | |
2453 | { | |
2454 | struct breakpoint *bpt; | |
2455 | ||
2456 | ALL_BREAKPOINTS (bpt) | |
2457 | { | |
2458 | struct bp_location *loc; | |
2459 | ||
2460 | if (bpt->type != bp_hardware_watchpoint | |
2461 | && bpt->type != bp_access_watchpoint) | |
2462 | continue; | |
2463 | ||
2464 | if (!breakpoint_enabled (bpt)) | |
2465 | continue; | |
2466 | ||
2467 | for (loc = bpt->loc; loc; loc = loc->next) | |
2468 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2469 | { | |
2470 | CORE_ADDR l, h; | |
2471 | ||
2472 | /* Check for intersection. */ | |
2473 | l = max (loc->address, addr); | |
2474 | h = min (loc->address + loc->length, addr + len); | |
2475 | if (l < h) | |
2476 | return 1; | |
2477 | } | |
2478 | } | |
2479 | return 0; | |
2480 | } | |
2481 | ||
075f6582 DJ |
2482 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2483 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2484 | |
2485 | int | |
6c95b8df PA |
2486 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2487 | ptid_t ptid) | |
c906108c | 2488 | { |
876fa593 | 2489 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2490 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2491 | int thread = -1; |
4a306c9a | 2492 | int task = 0; |
a6f1cd96 | 2493 | |
876fa593 | 2494 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2495 | { |
075f6582 DJ |
2496 | if (bpt->loc_type != bp_loc_software_breakpoint |
2497 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2498 | continue; | |
2499 | ||
a6f1cd96 JB |
2500 | if (!breakpoint_enabled (bpt->owner) |
2501 | && bpt->owner->enable_state != bp_permanent) | |
2502 | continue; | |
2503 | ||
6c95b8df PA |
2504 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2505 | aspace, pc)) | |
a6f1cd96 JB |
2506 | continue; |
2507 | ||
2508 | if (bpt->owner->thread != -1) | |
075f6582 | 2509 | { |
a6f1cd96 JB |
2510 | /* This is a thread-specific breakpoint. Check that ptid |
2511 | matches that thread. If thread hasn't been computed yet, | |
2512 | it is now time to do so. */ | |
2513 | if (thread == -1) | |
2514 | thread = pid_to_thread_id (ptid); | |
2515 | if (bpt->owner->thread != thread) | |
2516 | continue; | |
075f6582 | 2517 | } |
a6f1cd96 | 2518 | |
4a306c9a JB |
2519 | if (bpt->owner->task != 0) |
2520 | { | |
2521 | /* This is a task-specific breakpoint. Check that ptid | |
2522 | matches that task. If task hasn't been computed yet, | |
2523 | it is now time to do so. */ | |
2524 | if (task == 0) | |
2525 | task = ada_get_task_number (ptid); | |
2526 | if (bpt->owner->task != task) | |
2527 | continue; | |
2528 | } | |
2529 | ||
a6f1cd96 JB |
2530 | if (overlay_debugging |
2531 | && section_is_overlay (bpt->section) | |
2532 | && !section_is_mapped (bpt->section)) | |
2533 | continue; /* unmapped overlay -- can't be a match */ | |
2534 | ||
2535 | return 1; | |
c5aa993b | 2536 | } |
c906108c SS |
2537 | |
2538 | return 0; | |
2539 | } | |
c906108c | 2540 | \f |
c5aa993b | 2541 | |
c906108c SS |
2542 | /* bpstat stuff. External routines' interfaces are documented |
2543 | in breakpoint.h. */ | |
2544 | ||
2545 | int | |
fba45db2 | 2546 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2547 | { |
533be4dd | 2548 | return (ep->type == bp_catchpoint); |
c906108c SS |
2549 | } |
2550 | ||
198757a8 VP |
2551 | void |
2552 | bpstat_free (bpstat bs) | |
2553 | { | |
2554 | if (bs->old_val != NULL) | |
2555 | value_free (bs->old_val); | |
2556 | free_command_lines (&bs->commands); | |
2557 | xfree (bs); | |
2558 | } | |
2559 | ||
c906108c SS |
2560 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2561 | Also free any storage that is part of a bpstat. */ | |
2562 | ||
2563 | void | |
fba45db2 | 2564 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2565 | { |
2566 | bpstat p; | |
2567 | bpstat q; | |
2568 | ||
2569 | if (bsp == 0) | |
2570 | return; | |
2571 | p = *bsp; | |
2572 | while (p != NULL) | |
2573 | { | |
2574 | q = p->next; | |
198757a8 | 2575 | bpstat_free (p); |
c906108c SS |
2576 | p = q; |
2577 | } | |
2578 | *bsp = NULL; | |
2579 | } | |
2580 | ||
2581 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2582 | is part of the bpstat is copied as well. */ | |
2583 | ||
2584 | bpstat | |
fba45db2 | 2585 | bpstat_copy (bpstat bs) |
c906108c SS |
2586 | { |
2587 | bpstat p = NULL; | |
2588 | bpstat tmp; | |
2589 | bpstat retval = NULL; | |
2590 | ||
2591 | if (bs == NULL) | |
2592 | return bs; | |
2593 | ||
2594 | for (; bs != NULL; bs = bs->next) | |
2595 | { | |
2596 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2597 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2598 | if (bs->commands != NULL) |
2599 | tmp->commands = copy_command_lines (bs->commands); | |
2600 | if (bs->old_val != NULL) | |
3c3185ac JK |
2601 | { |
2602 | tmp->old_val = value_copy (bs->old_val); | |
2603 | release_value (tmp->old_val); | |
2604 | } | |
31cc81e9 | 2605 | |
c906108c SS |
2606 | if (p == NULL) |
2607 | /* This is the first thing in the chain. */ | |
2608 | retval = tmp; | |
2609 | else | |
2610 | p->next = tmp; | |
2611 | p = tmp; | |
2612 | } | |
2613 | p->next = NULL; | |
2614 | return retval; | |
2615 | } | |
2616 | ||
2617 | /* Find the bpstat associated with this breakpoint */ | |
2618 | ||
2619 | bpstat | |
fba45db2 | 2620 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2621 | { |
c5aa993b JM |
2622 | if (bsp == NULL) |
2623 | return NULL; | |
c906108c | 2624 | |
c5aa993b JM |
2625 | for (; bsp != NULL; bsp = bsp->next) |
2626 | { | |
4f8d1dc6 | 2627 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2628 | return bsp; |
2629 | } | |
c906108c SS |
2630 | return NULL; |
2631 | } | |
2632 | ||
2633 | /* Find a step_resume breakpoint associated with this bpstat. | |
2634 | (If there are multiple step_resume bp's on the list, this function | |
2635 | will arbitrarily pick one.) | |
2636 | ||
2637 | It is an error to use this function if BPSTAT doesn't contain a | |
2638 | step_resume breakpoint. | |
2639 | ||
2640 | See wait_for_inferior's use of this function. */ | |
2641 | struct breakpoint * | |
fba45db2 | 2642 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2643 | { |
8601f500 MS |
2644 | int current_thread; |
2645 | ||
8a3fe4f8 | 2646 | gdb_assert (bsp != NULL); |
c906108c | 2647 | |
8601f500 MS |
2648 | current_thread = pid_to_thread_id (inferior_ptid); |
2649 | ||
c906108c SS |
2650 | for (; bsp != NULL; bsp = bsp->next) |
2651 | { | |
059fb39f PM |
2652 | if ((bsp->breakpoint_at != NULL) |
2653 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2654 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2655 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2656 | return bsp->breakpoint_at->owner; |
c906108c SS |
2657 | } |
2658 | ||
8a3fe4f8 | 2659 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2660 | } |
2661 | ||
2662 | ||
8671a17b | 2663 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2664 | at. *BSP upon return is a bpstat which points to the remaining |
2665 | breakpoints stopped at (but which is not guaranteed to be good for | |
2666 | anything but further calls to bpstat_num). | |
8671a17b PA |
2667 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2668 | Return -1 if stopped at a breakpoint that has been deleted since | |
2669 | we set it. | |
2670 | Return 1 otherwise. */ | |
c906108c SS |
2671 | |
2672 | int | |
8671a17b | 2673 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2674 | { |
2675 | struct breakpoint *b; | |
2676 | ||
2677 | if ((*bsp) == NULL) | |
2678 | return 0; /* No more breakpoint values */ | |
8671a17b | 2679 | |
4f8d1dc6 VP |
2680 | /* We assume we'll never have several bpstats that |
2681 | correspond to a single breakpoint -- otherwise, | |
2682 | this function might return the same number more | |
2683 | than once and this will look ugly. */ | |
2684 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2685 | *bsp = (*bsp)->next; |
2686 | if (b == NULL) | |
2687 | return -1; /* breakpoint that's been deleted since */ | |
2688 | ||
2689 | *num = b->number; /* We have its number */ | |
2690 | return 1; | |
c906108c SS |
2691 | } |
2692 | ||
2693 | /* Modify BS so that the actions will not be performed. */ | |
2694 | ||
2695 | void | |
fba45db2 | 2696 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2697 | { |
2698 | for (; bs != NULL; bs = bs->next) | |
2699 | { | |
c2b8ed2c | 2700 | free_command_lines (&bs->commands); |
c906108c SS |
2701 | if (bs->old_val != NULL) |
2702 | { | |
2703 | value_free (bs->old_val); | |
2704 | bs->old_val = NULL; | |
2705 | } | |
2706 | } | |
2707 | } | |
2708 | ||
f3b1572e PA |
2709 | /* Called when a command is about to proceed the inferior. */ |
2710 | ||
2711 | static void | |
2712 | breakpoint_about_to_proceed (void) | |
2713 | { | |
2714 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2715 | { | |
2716 | struct thread_info *tp = inferior_thread (); | |
2717 | ||
2718 | /* Allow inferior function calls in breakpoint commands to not | |
2719 | interrupt the command list. When the call finishes | |
2720 | successfully, the inferior will be standing at the same | |
2721 | breakpoint as if nothing happened. */ | |
2722 | if (tp->in_infcall) | |
2723 | return; | |
2724 | } | |
2725 | ||
2726 | breakpoint_proceeded = 1; | |
2727 | } | |
2728 | ||
c906108c | 2729 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2730 | static void |
4efb68b1 | 2731 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2732 | { |
2733 | executing_breakpoint_commands = 0; | |
2734 | } | |
2735 | ||
2736 | /* Execute all the commands associated with all the breakpoints at this | |
2737 | location. Any of these commands could cause the process to proceed | |
2738 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2739 | the global "breakpoint_proceeded" after each command. |
c906108c | 2740 | |
347bddb7 PA |
2741 | Returns true if a breakpoint command resumed the inferior. In that |
2742 | case, it is the caller's responsibility to recall it again with the | |
2743 | bpstat of the current thread. */ | |
2744 | ||
2745 | static int | |
2746 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2747 | { |
2748 | bpstat bs; | |
2749 | struct cleanup *old_chain; | |
347bddb7 | 2750 | int again = 0; |
c906108c SS |
2751 | |
2752 | /* Avoid endless recursion if a `source' command is contained | |
2753 | in bs->commands. */ | |
2754 | if (executing_breakpoint_commands) | |
347bddb7 | 2755 | return 0; |
c906108c SS |
2756 | |
2757 | executing_breakpoint_commands = 1; | |
2758 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2759 | ||
c906108c SS |
2760 | /* This pointer will iterate over the list of bpstat's. */ |
2761 | bs = *bsp; | |
2762 | ||
2763 | breakpoint_proceeded = 0; | |
2764 | for (; bs != NULL; bs = bs->next) | |
2765 | { | |
6c50ab1c JB |
2766 | struct command_line *cmd; |
2767 | struct cleanup *this_cmd_tree_chain; | |
2768 | ||
2769 | /* Take ownership of the BSP's command tree, if it has one. | |
2770 | ||
2771 | The command tree could legitimately contain commands like | |
2772 | 'step' and 'next', which call clear_proceed_status, which | |
2773 | frees stop_bpstat's command tree. To make sure this doesn't | |
2774 | free the tree we're executing out from under us, we need to | |
2775 | take ownership of the tree ourselves. Since a given bpstat's | |
2776 | commands are only executed once, we don't need to copy it; we | |
2777 | can clear the pointer in the bpstat, and make sure we free | |
2778 | the tree when we're done. */ | |
c906108c | 2779 | cmd = bs->commands; |
6c50ab1c JB |
2780 | bs->commands = 0; |
2781 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2782 | ||
c906108c SS |
2783 | while (cmd != NULL) |
2784 | { | |
2785 | execute_control_command (cmd); | |
2786 | ||
2787 | if (breakpoint_proceeded) | |
2788 | break; | |
2789 | else | |
2790 | cmd = cmd->next; | |
2791 | } | |
6c50ab1c JB |
2792 | |
2793 | /* We can free this command tree now. */ | |
2794 | do_cleanups (this_cmd_tree_chain); | |
2795 | ||
c906108c | 2796 | if (breakpoint_proceeded) |
32c1e744 VP |
2797 | { |
2798 | if (target_can_async_p ()) | |
347bddb7 PA |
2799 | /* If we are in async mode, then the target might be still |
2800 | running, not stopped at any breakpoint, so nothing for | |
2801 | us to do here -- just return to the event loop. */ | |
2802 | ; | |
32c1e744 VP |
2803 | else |
2804 | /* In sync mode, when execute_control_command returns | |
2805 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2806 | Breakpoint commands for that stop were not run, since |
2807 | execute_command does not run breakpoint commands -- | |
2808 | only command_line_handler does, but that one is not | |
2809 | involved in execution of breakpoint commands. So, we | |
2810 | can now execute breakpoint commands. It should be | |
2811 | noted that making execute_command do bpstat actions is | |
2812 | not an option -- in this case we'll have recursive | |
2813 | invocation of bpstat for each breakpoint with a | |
2814 | command, and can easily blow up GDB stack. Instead, we | |
2815 | return true, which will trigger the caller to recall us | |
2816 | with the new stop_bpstat. */ | |
2817 | again = 1; | |
2818 | break; | |
32c1e744 | 2819 | } |
c906108c | 2820 | } |
c2b8ed2c | 2821 | do_cleanups (old_chain); |
347bddb7 PA |
2822 | return again; |
2823 | } | |
2824 | ||
2825 | void | |
2826 | bpstat_do_actions (void) | |
2827 | { | |
2828 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2829 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2830 | && target_has_execution | |
2831 | && !is_exited (inferior_ptid) | |
2832 | && !is_executing (inferior_ptid)) | |
2833 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2834 | and only return when it is stopped at the next breakpoint, we | |
2835 | keep doing breakpoint actions until it returns false to | |
2836 | indicate the inferior was not resumed. */ | |
2837 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2838 | break; | |
c906108c SS |
2839 | } |
2840 | ||
fa4727a6 DJ |
2841 | /* Print out the (old or new) value associated with a watchpoint. */ |
2842 | ||
2843 | static void | |
2844 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2845 | { | |
2846 | if (val == NULL) | |
2847 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2848 | else | |
79a45b7d TT |
2849 | { |
2850 | struct value_print_options opts; | |
2851 | get_user_print_options (&opts); | |
2852 | value_print (val, stream, &opts); | |
2853 | } | |
fa4727a6 DJ |
2854 | } |
2855 | ||
e514a9d6 | 2856 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2857 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2858 | by having it set different print_it values. |
2859 | ||
2860 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2861 | through the bpstat list of things causing this stop, calling the | |
2862 | print_bp_stop_message function on each one. The behavior of the | |
2863 | print_bp_stop_message function depends on the print_it field of | |
2864 | bpstat. If such field so indicates, call this function here. | |
2865 | ||
2866 | Return values from this routine (ultimately used by bpstat_print() | |
2867 | and normal_stop() to decide what to do): | |
2868 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2869 | don't print anything else. | |
2870 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2871 | that something to be followed by a location. | |
2872 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2873 | that something to be followed by a location. | |
2874 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2875 | analysis. */ | |
c906108c | 2876 | |
917317f4 | 2877 | static enum print_stop_action |
fba45db2 | 2878 | print_it_typical (bpstat bs) |
c906108c | 2879 | { |
f7545552 | 2880 | struct cleanup *old_chain; |
4f8d1dc6 | 2881 | struct breakpoint *b; |
89f9893c | 2882 | const struct bp_location *bl; |
8b93c638 | 2883 | struct ui_stream *stb; |
f7545552 TT |
2884 | int bp_temp = 0; |
2885 | enum print_stop_action result; | |
2886 | ||
c906108c SS |
2887 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2888 | which has since been deleted. */ | |
e514a9d6 | 2889 | if (bs->breakpoint_at == NULL) |
917317f4 | 2890 | return PRINT_UNKNOWN; |
0d381245 VP |
2891 | bl = bs->breakpoint_at; |
2892 | b = bl->owner; | |
c906108c | 2893 | |
f7545552 TT |
2894 | stb = ui_out_stream_new (uiout); |
2895 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2896 | ||
4f8d1dc6 | 2897 | switch (b->type) |
c906108c | 2898 | { |
e514a9d6 JM |
2899 | case bp_breakpoint: |
2900 | case bp_hardware_breakpoint: | |
2cec12e5 | 2901 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2902 | if (bl->address != bl->requested_address) |
2903 | breakpoint_adjustment_warning (bl->requested_address, | |
2904 | bl->address, | |
4f8d1dc6 VP |
2905 | b->number, 1); |
2906 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2907 | if (bp_temp) |
2908 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2909 | else | |
2910 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2911 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2912 | { |
2913 | ui_out_field_string (uiout, "reason", | |
2914 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2915 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2916 | } | |
4f8d1dc6 | 2917 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2918 | ui_out_text (uiout, ", "); |
f7545552 | 2919 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2920 | break; |
2921 | ||
2922 | case bp_shlib_event: | |
917317f4 JM |
2923 | /* Did we stop because the user set the stop_on_solib_events |
2924 | variable? (If so, we report this as a generic, "Stopped due | |
2925 | to shlib event" message.) */ | |
a3f17187 | 2926 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2927 | result = PRINT_NOTHING; |
e514a9d6 JM |
2928 | break; |
2929 | ||
c4093a6a JM |
2930 | case bp_thread_event: |
2931 | /* Not sure how we will get here. | |
2932 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2933 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2934 | result = PRINT_NOTHING; |
c4093a6a JM |
2935 | break; |
2936 | ||
1900040c MS |
2937 | case bp_overlay_event: |
2938 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2939 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2940 | result = PRINT_NOTHING; |
1900040c MS |
2941 | break; |
2942 | ||
0fd8e87f UW |
2943 | case bp_longjmp_master: |
2944 | /* These should never be enabled. */ | |
2945 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
2946 | result = PRINT_NOTHING; | |
2947 | break; | |
2948 | ||
e514a9d6 JM |
2949 | case bp_watchpoint: |
2950 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2951 | annotate_watchpoint (b->number); |
2952 | if (ui_out_is_mi_like_p (uiout)) | |
2953 | ui_out_field_string | |
2954 | (uiout, "reason", | |
2955 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2956 | mention (b); | |
f7545552 | 2957 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2958 | ui_out_text (uiout, "\nOld value = "); |
2959 | watchpoint_value_print (bs->old_val, stb->stream); | |
2960 | ui_out_field_stream (uiout, "old", stb); | |
2961 | ui_out_text (uiout, "\nNew value = "); | |
2962 | watchpoint_value_print (b->val, stb->stream); | |
2963 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2964 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2965 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2966 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2967 | break; |
2968 | ||
2969 | case bp_read_watchpoint: | |
9dc5e2a9 | 2970 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2971 | ui_out_field_string |
2972 | (uiout, "reason", | |
2973 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2974 | mention (b); |
f7545552 | 2975 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2976 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2977 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2978 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2979 | ui_out_text (uiout, "\n"); |
f7545552 | 2980 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2981 | break; |
2982 | ||
2983 | case bp_access_watchpoint: | |
fa4727a6 | 2984 | if (bs->old_val != NULL) |
8b93c638 | 2985 | { |
4f8d1dc6 | 2986 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2987 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2988 | ui_out_field_string |
2989 | (uiout, "reason", | |
2990 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2991 | mention (b); |
f7545552 | 2992 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2993 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2994 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2995 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2996 | ui_out_text (uiout, "\nNew value = "); |
2997 | } | |
2998 | else | |
2999 | { | |
4f8d1dc6 | 3000 | mention (b); |
9dc5e2a9 | 3001 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3002 | ui_out_field_string |
3003 | (uiout, "reason", | |
3004 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3005 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3006 | ui_out_text (uiout, "\nValue = "); |
3007 | } | |
fa4727a6 | 3008 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3009 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3010 | ui_out_text (uiout, "\n"); |
f7545552 | 3011 | result = PRINT_UNKNOWN; |
e514a9d6 | 3012 | break; |
4ce44c66 | 3013 | |
e514a9d6 JM |
3014 | /* Fall through, we don't deal with these types of breakpoints |
3015 | here. */ | |
3016 | ||
11cf8741 | 3017 | case bp_finish: |
9dc5e2a9 | 3018 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3019 | ui_out_field_string |
3020 | (uiout, "reason", | |
3021 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3022 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3023 | break; |
3024 | ||
e514a9d6 | 3025 | case bp_until: |
9dc5e2a9 | 3026 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3027 | ui_out_field_string |
3028 | (uiout, "reason", | |
3029 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3030 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3031 | break; |
3032 | ||
c2d11a7d | 3033 | case bp_none: |
e514a9d6 JM |
3034 | case bp_longjmp: |
3035 | case bp_longjmp_resume: | |
3036 | case bp_step_resume: | |
e514a9d6 JM |
3037 | case bp_watchpoint_scope: |
3038 | case bp_call_dummy: | |
1042e4c0 | 3039 | case bp_tracepoint: |
7a697b8d | 3040 | case bp_fast_tracepoint: |
4efc6507 | 3041 | case bp_jit_event: |
e514a9d6 | 3042 | default: |
f7545552 TT |
3043 | result = PRINT_UNKNOWN; |
3044 | break; | |
e514a9d6 | 3045 | } |
f7545552 TT |
3046 | |
3047 | do_cleanups (old_chain); | |
3048 | return result; | |
e514a9d6 JM |
3049 | } |
3050 | ||
3051 | /* Generic routine for printing messages indicating why we | |
3052 | stopped. The behavior of this function depends on the value | |
3053 | 'print_it' in the bpstat structure. Under some circumstances we | |
3054 | may decide not to print anything here and delegate the task to | |
3055 | normal_stop(). */ | |
3056 | ||
3057 | static enum print_stop_action | |
3058 | print_bp_stop_message (bpstat bs) | |
3059 | { | |
3060 | switch (bs->print_it) | |
3061 | { | |
3062 | case print_it_noop: | |
3063 | /* Nothing should be printed for this bpstat entry. */ | |
3064 | return PRINT_UNKNOWN; | |
3065 | break; | |
3066 | ||
3067 | case print_it_done: | |
3068 | /* We still want to print the frame, but we already printed the | |
3069 | relevant messages. */ | |
3070 | return PRINT_SRC_AND_LOC; | |
3071 | break; | |
3072 | ||
3073 | case print_it_normal: | |
4f8d1dc6 | 3074 | { |
89f9893c | 3075 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3076 | struct breakpoint *b = bl ? bl->owner : NULL; |
3077 | ||
3078 | /* Normal case. Call the breakpoint's print_it method, or | |
3079 | print_it_typical. */ | |
3080 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3081 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3082 | return b->ops->print_it (b); | |
3083 | else | |
3084 | return print_it_typical (bs); | |
3085 | } | |
3086 | break; | |
3086aeae | 3087 | |
e514a9d6 | 3088 | default: |
8e65ff28 | 3089 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3090 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3091 | break; |
c906108c | 3092 | } |
c906108c SS |
3093 | } |
3094 | ||
e514a9d6 JM |
3095 | /* Print a message indicating what happened. This is called from |
3096 | normal_stop(). The input to this routine is the head of the bpstat | |
3097 | list - a list of the eventpoints that caused this stop. This | |
3098 | routine calls the generic print routine for printing a message | |
3099 | about reasons for stopping. This will print (for example) the | |
3100 | "Breakpoint n," part of the output. The return value of this | |
3101 | routine is one of: | |
c906108c | 3102 | |
917317f4 JM |
3103 | PRINT_UNKNOWN: Means we printed nothing |
3104 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3105 | code to print the location. An example is |
3106 | "Breakpoint 1, " which should be followed by | |
3107 | the location. | |
917317f4 | 3108 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3109 | to also print the location part of the message. |
3110 | An example is the catch/throw messages, which | |
917317f4 JM |
3111 | don't require a location appended to the end. |
3112 | PRINT_NOTHING: We have done some printing and we don't need any | |
3113 | further info to be printed.*/ | |
c906108c | 3114 | |
917317f4 | 3115 | enum print_stop_action |
fba45db2 | 3116 | bpstat_print (bpstat bs) |
c906108c SS |
3117 | { |
3118 | int val; | |
c5aa993b | 3119 | |
c906108c | 3120 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3121 | (Currently all watchpoints go on the bpstat whether hit or not. |
3122 | That probably could (should) be changed, provided care is taken | |
c906108c | 3123 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3124 | for (; bs; bs = bs->next) |
3125 | { | |
3126 | val = print_bp_stop_message (bs); | |
3127 | if (val == PRINT_SRC_ONLY | |
3128 | || val == PRINT_SRC_AND_LOC | |
3129 | || val == PRINT_NOTHING) | |
3130 | return val; | |
3131 | } | |
c906108c | 3132 | |
e514a9d6 JM |
3133 | /* We reached the end of the chain, or we got a null BS to start |
3134 | with and nothing was printed. */ | |
917317f4 | 3135 | return PRINT_UNKNOWN; |
c906108c SS |
3136 | } |
3137 | ||
3138 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3139 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3140 | The argument is a "struct expression *" that has been cast to char * to | |
3141 | make it pass through catch_errors. */ | |
3142 | ||
3143 | static int | |
4efb68b1 | 3144 | breakpoint_cond_eval (void *exp) |
c906108c | 3145 | { |
278cd55f | 3146 | struct value *mark = value_mark (); |
c5aa993b | 3147 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
3148 | value_free_to_mark (mark); |
3149 | return i; | |
3150 | } | |
3151 | ||
3152 | /* Allocate a new bpstat and chain it to the current one. */ | |
3153 | ||
3154 | static bpstat | |
89f9893c | 3155 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3156 | { |
3157 | bpstat bs; | |
3158 | ||
3159 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3160 | cbs->next = bs; | |
4f8d1dc6 | 3161 | bs->breakpoint_at = bl; |
c906108c SS |
3162 | /* If the condition is false, etc., don't do the commands. */ |
3163 | bs->commands = NULL; | |
3164 | bs->old_val = NULL; | |
3165 | bs->print_it = print_it_normal; | |
3166 | return bs; | |
3167 | } | |
3168 | \f | |
d983da9c DJ |
3169 | /* The target has stopped with waitstatus WS. Check if any hardware |
3170 | watchpoints have triggered, according to the target. */ | |
3171 | ||
3172 | int | |
3173 | watchpoints_triggered (struct target_waitstatus *ws) | |
3174 | { | |
d92524f1 | 3175 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3176 | CORE_ADDR addr; |
3177 | struct breakpoint *b; | |
3178 | ||
3179 | if (!stopped_by_watchpoint) | |
3180 | { | |
3181 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3182 | as not triggered. */ | |
3183 | ALL_BREAKPOINTS (b) | |
3184 | if (b->type == bp_hardware_watchpoint | |
3185 | || b->type == bp_read_watchpoint | |
3186 | || b->type == bp_access_watchpoint) | |
3187 | b->watchpoint_triggered = watch_triggered_no; | |
3188 | ||
3189 | return 0; | |
3190 | } | |
3191 | ||
3192 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3193 | { | |
3194 | /* We were stopped by a watchpoint, but we don't know where. | |
3195 | Mark all watchpoints as unknown. */ | |
3196 | ALL_BREAKPOINTS (b) | |
3197 | if (b->type == bp_hardware_watchpoint | |
3198 | || b->type == bp_read_watchpoint | |
3199 | || b->type == bp_access_watchpoint) | |
3200 | b->watchpoint_triggered = watch_triggered_unknown; | |
3201 | ||
3202 | return stopped_by_watchpoint; | |
3203 | } | |
3204 | ||
3205 | /* The target could report the data address. Mark watchpoints | |
3206 | affected by this data address as triggered, and all others as not | |
3207 | triggered. */ | |
3208 | ||
3209 | ALL_BREAKPOINTS (b) | |
3210 | if (b->type == bp_hardware_watchpoint | |
3211 | || b->type == bp_read_watchpoint | |
3212 | || b->type == bp_access_watchpoint) | |
3213 | { | |
a5606eee | 3214 | struct bp_location *loc; |
d983da9c DJ |
3215 | struct value *v; |
3216 | ||
3217 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3218 | for (loc = b->loc; loc; loc = loc->next) |
3219 | /* Exact match not required. Within range is | |
3220 | sufficient. */ | |
5009afc5 AS |
3221 | if (target_watchpoint_addr_within_range (¤t_target, |
3222 | addr, loc->address, | |
3223 | loc->length)) | |
a5606eee VP |
3224 | { |
3225 | b->watchpoint_triggered = watch_triggered_yes; | |
3226 | break; | |
3227 | } | |
d983da9c DJ |
3228 | } |
3229 | ||
3230 | return 1; | |
3231 | } | |
3232 | ||
c906108c SS |
3233 | /* Possible return values for watchpoint_check (this can't be an enum |
3234 | because of check_errors). */ | |
3235 | /* The watchpoint has been deleted. */ | |
3236 | #define WP_DELETED 1 | |
3237 | /* The value has changed. */ | |
3238 | #define WP_VALUE_CHANGED 2 | |
3239 | /* The value has not changed. */ | |
3240 | #define WP_VALUE_NOT_CHANGED 3 | |
3241 | ||
3242 | #define BP_TEMPFLAG 1 | |
3243 | #define BP_HARDWAREFLAG 2 | |
3244 | ||
553e4c11 JB |
3245 | /* Evaluate watchpoint condition expression and check if its value changed. |
3246 | ||
3247 | P should be a pointer to struct bpstat, but is defined as a void * | |
3248 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3249 | |
3250 | static int | |
4efb68b1 | 3251 | watchpoint_check (void *p) |
c906108c SS |
3252 | { |
3253 | bpstat bs = (bpstat) p; | |
3254 | struct breakpoint *b; | |
3255 | struct frame_info *fr; | |
3256 | int within_current_scope; | |
3257 | ||
4f8d1dc6 | 3258 | b = bs->breakpoint_at->owner; |
c906108c | 3259 | |
f6bc2008 PA |
3260 | /* If this is a local watchpoint, we only want to check if the |
3261 | watchpoint frame is in scope if the current thread is the thread | |
3262 | that was used to create the watchpoint. */ | |
3263 | if (!watchpoint_in_thread_scope (b)) | |
3264 | return WP_VALUE_NOT_CHANGED; | |
3265 | ||
c906108c SS |
3266 | if (b->exp_valid_block == NULL) |
3267 | within_current_scope = 1; | |
3268 | else | |
3269 | { | |
edb3359d DJ |
3270 | struct frame_info *frame = get_current_frame (); |
3271 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3272 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3273 | ||
a0f49112 JK |
3274 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3275 | in the function but the stack frame has already been invalidated. | |
3276 | Since we can't rely on the values of local variables after the | |
3277 | stack has been destroyed, we are treating the watchpoint in that | |
3278 | state as `not changed' without further checking. Don't mark | |
3279 | watchpoints as changed if the current frame is in an epilogue - | |
3280 | even if they are in some other frame, our view of the stack | |
3281 | is likely to be wrong and frame_find_by_id could error out. */ | |
3282 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
3283 | return WP_VALUE_NOT_CHANGED; | |
3284 | ||
101dcfbe | 3285 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3286 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3287 | |
3288 | /* If we've gotten confused in the unwinder, we might have | |
3289 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3290 | if (within_current_scope) |
3291 | { | |
3292 | struct symbol *function; | |
3293 | ||
3294 | function = get_frame_function (fr); | |
3295 | if (function == NULL | |
3296 | || !contained_in (b->exp_valid_block, | |
3297 | SYMBOL_BLOCK_VALUE (function))) | |
3298 | within_current_scope = 0; | |
3299 | } | |
69fbadd5 | 3300 | |
edb3359d | 3301 | if (within_current_scope) |
c906108c SS |
3302 | /* If we end up stopping, the current frame will get selected |
3303 | in normal_stop. So this call to select_frame won't affect | |
3304 | the user. */ | |
0f7d239c | 3305 | select_frame (fr); |
c906108c | 3306 | } |
c5aa993b | 3307 | |
c906108c SS |
3308 | if (within_current_scope) |
3309 | { | |
3310 | /* We use value_{,free_to_}mark because it could be a | |
3311 | *long* time before we return to the command level and | |
c5aa993b JM |
3312 | call free_all_values. We can't call free_all_values because |
3313 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3314 | |
278cd55f | 3315 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3316 | struct value *new_val; |
3317 | ||
3318 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3319 | |
3320 | /* We use value_equal_contents instead of value_equal because the latter | |
3321 | coerces an array to a pointer, thus comparing just the address of the | |
3322 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3323 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3324 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3325 | { |
fa4727a6 DJ |
3326 | if (new_val != NULL) |
3327 | { | |
3328 | release_value (new_val); | |
3329 | value_free_to_mark (mark); | |
3330 | } | |
c906108c SS |
3331 | bs->old_val = b->val; |
3332 | b->val = new_val; | |
fa4727a6 | 3333 | b->val_valid = 1; |
c906108c SS |
3334 | /* We will stop here */ |
3335 | return WP_VALUE_CHANGED; | |
3336 | } | |
3337 | else | |
3338 | { | |
3339 | /* Nothing changed, don't do anything. */ | |
3340 | value_free_to_mark (mark); | |
3341 | /* We won't stop here */ | |
3342 | return WP_VALUE_NOT_CHANGED; | |
3343 | } | |
3344 | } | |
3345 | else | |
3346 | { | |
3347 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3348 | if we temporarily ignored the watchpoint, then when |
3349 | we reenter the block in which it is valid it contains | |
3350 | garbage (in the case of a function, it may have two | |
3351 | garbage values, one before and one after the prologue). | |
3352 | So we can't even detect the first assignment to it and | |
3353 | watch after that (since the garbage may or may not equal | |
3354 | the first value assigned). */ | |
4ce44c66 JM |
3355 | /* We print all the stop information in print_it_typical(), but |
3356 | in this case, by the time we call print_it_typical() this bp | |
3357 | will be deleted already. So we have no choice but print the | |
3358 | information here. */ | |
9dc5e2a9 | 3359 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3360 | ui_out_field_string |
3361 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3362 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3363 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3364 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3365 | which its expression is valid.\n"); | |
4ce44c66 | 3366 | |
c906108c | 3367 | if (b->related_breakpoint) |
b5de0fa7 EZ |
3368 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
3369 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
3370 | |
3371 | return WP_DELETED; | |
3372 | } | |
3373 | } | |
3374 | ||
18a18393 VP |
3375 | /* Return true if it looks like target has stopped due to hitting |
3376 | breakpoint location BL. This function does not check if we | |
3377 | should stop, only if BL explains the stop. */ | |
3378 | static int | |
6c95b8df PA |
3379 | bpstat_check_location (const struct bp_location *bl, |
3380 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3381 | { |
3382 | struct breakpoint *b = bl->owner; | |
3383 | ||
e8595ef6 SS |
3384 | /* By definition, the inferior does not report stops at |
3385 | tracepoints. */ | |
7a697b8d | 3386 | if (tracepoint_type (b)) |
e8595ef6 SS |
3387 | return 0; |
3388 | ||
18a18393 VP |
3389 | if (b->type != bp_watchpoint |
3390 | && b->type != bp_hardware_watchpoint | |
3391 | && b->type != bp_read_watchpoint | |
3392 | && b->type != bp_access_watchpoint | |
3393 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 3394 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3395 | { |
6c95b8df PA |
3396 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3397 | aspace, bp_addr)) | |
18a18393 VP |
3398 | return 0; |
3399 | if (overlay_debugging /* unmapped overlay section */ | |
3400 | && section_is_overlay (bl->section) | |
3401 | && !section_is_mapped (bl->section)) | |
3402 | return 0; | |
3403 | } | |
3404 | ||
3405 | /* Continuable hardware watchpoints are treated as non-existent if the | |
3406 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3407 | some data address). Otherwise gdb won't stop on a break instruction | |
3408 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3409 | been defined. Also skip watchpoints which we know did not trigger | |
3410 | (did not match the data address). */ | |
3411 | ||
3412 | if ((b->type == bp_hardware_watchpoint | |
3413 | || b->type == bp_read_watchpoint | |
3414 | || b->type == bp_access_watchpoint) | |
3415 | && b->watchpoint_triggered == watch_triggered_no) | |
3416 | return 0; | |
3417 | ||
3418 | if (b->type == bp_hardware_breakpoint) | |
3419 | { | |
3420 | if (bl->address != bp_addr) | |
3421 | return 0; | |
3422 | if (overlay_debugging /* unmapped overlay section */ | |
3423 | && section_is_overlay (bl->section) | |
3424 | && !section_is_mapped (bl->section)) | |
3425 | return 0; | |
3426 | } | |
ce78b96d | 3427 | |
ce78b96d JB |
3428 | if (b->type == bp_catchpoint) |
3429 | { | |
3430 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3431 | if (!b->ops->breakpoint_hit (b)) | |
3432 | return 0; | |
3433 | } | |
3434 | ||
18a18393 VP |
3435 | return 1; |
3436 | } | |
3437 | ||
3438 | /* If BS refers to a watchpoint, determine if the watched values | |
3439 | has actually changed, and we should stop. If not, set BS->stop | |
3440 | to 0. */ | |
3441 | static void | |
3442 | bpstat_check_watchpoint (bpstat bs) | |
3443 | { | |
3444 | const struct bp_location *bl = bs->breakpoint_at; | |
3445 | struct breakpoint *b = bl->owner; | |
3446 | ||
3447 | if (b->type == bp_watchpoint | |
3448 | || b->type == bp_read_watchpoint | |
3449 | || b->type == bp_access_watchpoint | |
3450 | || b->type == bp_hardware_watchpoint) | |
3451 | { | |
3452 | CORE_ADDR addr; | |
3453 | struct value *v; | |
3454 | int must_check_value = 0; | |
3455 | ||
3456 | if (b->type == bp_watchpoint) | |
3457 | /* For a software watchpoint, we must always check the | |
3458 | watched value. */ | |
3459 | must_check_value = 1; | |
3460 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3461 | /* We have a hardware watchpoint (read, write, or access) | |
3462 | and the target earlier reported an address watched by | |
3463 | this watchpoint. */ | |
3464 | must_check_value = 1; | |
3465 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3466 | && b->type == bp_hardware_watchpoint) | |
3467 | /* We were stopped by a hardware watchpoint, but the target could | |
3468 | not report the data address. We must check the watchpoint's | |
3469 | value. Access and read watchpoints are out of luck; without | |
3470 | a data address, we can't figure it out. */ | |
3471 | must_check_value = 1; | |
3472 | ||
3473 | if (must_check_value) | |
3474 | { | |
3475 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3476 | b->number); | |
3477 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3478 | int e = catch_errors (watchpoint_check, bs, message, | |
3479 | RETURN_MASK_ALL); | |
3480 | do_cleanups (cleanups); | |
3481 | switch (e) | |
3482 | { | |
3483 | case WP_DELETED: | |
3484 | /* We've already printed what needs to be printed. */ | |
3485 | bs->print_it = print_it_done; | |
3486 | /* Stop. */ | |
3487 | break; | |
3488 | case WP_VALUE_CHANGED: | |
3489 | if (b->type == bp_read_watchpoint) | |
3490 | { | |
85d721b8 PA |
3491 | /* There are two cases to consider here: |
3492 | ||
3493 | 1. we're watching the triggered memory for reads. | |
3494 | In that case, trust the target, and always report | |
3495 | the watchpoint hit to the user. Even though | |
3496 | reads don't cause value changes, the value may | |
3497 | have changed since the last time it was read, and | |
3498 | since we're not trapping writes, we will not see | |
3499 | those, and as such we should ignore our notion of | |
3500 | old value. | |
3501 | ||
3502 | 2. we're watching the triggered memory for both | |
3503 | reads and writes. There are two ways this may | |
3504 | happen: | |
3505 | ||
3506 | 2.1. this is a target that can't break on data | |
3507 | reads only, but can break on accesses (reads or | |
3508 | writes), such as e.g., x86. We detect this case | |
3509 | at the time we try to insert read watchpoints. | |
3510 | ||
3511 | 2.2. otherwise, the target supports read | |
3512 | watchpoints, but, the user set an access or write | |
3513 | watchpoint watching the same memory as this read | |
3514 | watchpoint. | |
3515 | ||
3516 | If we're watching memory writes as well as reads, | |
3517 | ignore watchpoint hits when we find that the | |
3518 | value hasn't changed, as reads don't cause | |
3519 | changes. This still gives false positives when | |
3520 | the program writes the same value to memory as | |
3521 | what there was already in memory (we will confuse | |
3522 | it for a read), but it's much better than | |
3523 | nothing. */ | |
3524 | ||
3525 | int other_write_watchpoint = 0; | |
3526 | ||
3527 | if (bl->watchpoint_type == hw_read) | |
3528 | { | |
3529 | struct breakpoint *other_b; | |
3530 | ||
3531 | ALL_BREAKPOINTS (other_b) | |
3532 | if ((other_b->type == bp_hardware_watchpoint | |
3533 | || other_b->type == bp_access_watchpoint) | |
3534 | && (other_b->watchpoint_triggered | |
3535 | == watch_triggered_yes)) | |
3536 | { | |
3537 | other_write_watchpoint = 1; | |
3538 | break; | |
3539 | } | |
3540 | } | |
3541 | ||
3542 | if (other_write_watchpoint | |
3543 | || bl->watchpoint_type == hw_access) | |
3544 | { | |
3545 | /* We're watching the same memory for writes, | |
3546 | and the value changed since the last time we | |
3547 | updated it, so this trap must be for a write. | |
3548 | Ignore it. */ | |
3549 | bs->print_it = print_it_noop; | |
3550 | bs->stop = 0; | |
3551 | } | |
18a18393 VP |
3552 | } |
3553 | break; | |
3554 | case WP_VALUE_NOT_CHANGED: | |
3555 | if (b->type == bp_hardware_watchpoint | |
3556 | || b->type == bp_watchpoint) | |
3557 | { | |
3558 | /* Don't stop: write watchpoints shouldn't fire if | |
3559 | the value hasn't changed. */ | |
3560 | bs->print_it = print_it_noop; | |
3561 | bs->stop = 0; | |
3562 | } | |
3563 | /* Stop. */ | |
3564 | break; | |
3565 | default: | |
3566 | /* Can't happen. */ | |
3567 | case 0: | |
3568 | /* Error from catch_errors. */ | |
3569 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3570 | if (b->related_breakpoint) | |
3571 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3572 | b->disposition = disp_del_at_next_stop; | |
3573 | /* We've already printed what needs to be printed. */ | |
3574 | bs->print_it = print_it_done; | |
3575 | break; | |
3576 | } | |
3577 | } | |
3578 | else /* must_check_value == 0 */ | |
3579 | { | |
3580 | /* This is a case where some watchpoint(s) triggered, but | |
3581 | not at the address of this watchpoint, or else no | |
3582 | watchpoint triggered after all. So don't print | |
3583 | anything for this watchpoint. */ | |
3584 | bs->print_it = print_it_noop; | |
3585 | bs->stop = 0; | |
3586 | } | |
3587 | } | |
3588 | } | |
3589 | ||
3590 | ||
3591 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3592 | of breakpoint referred to by BS. If we should not stop for this | |
3593 | breakpoint, set BS->stop to 0. */ | |
3594 | static void | |
3595 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3596 | { | |
3597 | int thread_id = pid_to_thread_id (ptid); | |
3598 | const struct bp_location *bl = bs->breakpoint_at; | |
3599 | struct breakpoint *b = bl->owner; | |
3600 | ||
3601 | if (frame_id_p (b->frame_id) | |
edb3359d | 3602 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3603 | bs->stop = 0; |
3604 | else if (bs->stop) | |
3605 | { | |
3606 | int value_is_zero = 0; | |
3607 | ||
3608 | /* If this is a scope breakpoint, mark the associated | |
3609 | watchpoint as triggered so that we will handle the | |
3610 | out-of-scope event. We'll get to the watchpoint next | |
3611 | iteration. */ | |
3612 | if (b->type == bp_watchpoint_scope) | |
3613 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3614 | ||
3615 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3616 | { | |
c5bc3a77 DJ |
3617 | /* We use value_mark and value_free_to_mark because it could |
3618 | be a long time before we return to the command level and | |
3619 | call free_all_values. We can't call free_all_values | |
3620 | because we might be in the middle of evaluating a | |
3621 | function call. */ | |
3622 | struct value *mark = value_mark (); | |
3623 | ||
edb3359d DJ |
3624 | /* Need to select the frame, with all that implies so that |
3625 | the conditions will have the right context. Because we | |
3626 | use the frame, we will not see an inlined function's | |
3627 | variables when we arrive at a breakpoint at the start | |
3628 | of the inlined function; the current frame will be the | |
3629 | call site. */ | |
18a18393 VP |
3630 | select_frame (get_current_frame ()); |
3631 | value_is_zero | |
3632 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3633 | "Error in testing breakpoint condition:\n", | |
3634 | RETURN_MASK_ALL); | |
3635 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3636 | value_free_to_mark (mark); |
18a18393 VP |
3637 | } |
3638 | if (bl->cond && value_is_zero) | |
3639 | { | |
3640 | bs->stop = 0; | |
3641 | } | |
3642 | else if (b->thread != -1 && b->thread != thread_id) | |
3643 | { | |
3644 | bs->stop = 0; | |
3645 | } | |
3646 | else if (b->ignore_count > 0) | |
3647 | { | |
3648 | b->ignore_count--; | |
3649 | annotate_ignore_count_change (); | |
3650 | bs->stop = 0; | |
3651 | /* Increase the hit count even though we don't | |
3652 | stop. */ | |
3653 | ++(b->hit_count); | |
3654 | } | |
3655 | } | |
3656 | } | |
3657 | ||
3658 | ||
9709f61c | 3659 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3660 | BP_ADDR in thread PTID. |
c906108c | 3661 | |
d983da9c | 3662 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3663 | don't understand this stop. Result is a chain of bpstat's such that: |
3664 | ||
c5aa993b | 3665 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3666 | |
c5aa993b | 3667 | if we understand why we stopped, the result is not null. |
c906108c | 3668 | |
c5aa993b JM |
3669 | Each element of the chain refers to a particular breakpoint or |
3670 | watchpoint at which we have stopped. (We may have stopped for | |
3671 | several reasons concurrently.) | |
c906108c | 3672 | |
c5aa993b JM |
3673 | Each element of the chain has valid next, breakpoint_at, |
3674 | commands, FIXME??? fields. */ | |
c906108c SS |
3675 | |
3676 | bpstat | |
6c95b8df PA |
3677 | bpstat_stop_status (struct address_space *aspace, |
3678 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 3679 | { |
0d381245 | 3680 | struct breakpoint *b = NULL; |
876fa593 | 3681 | struct bp_location *bl, **blp_tmp; |
20874c92 | 3682 | struct bp_location *loc; |
c906108c SS |
3683 | /* Root of the chain of bpstat's */ |
3684 | struct bpstats root_bs[1]; | |
3685 | /* Pointer to the last thing in the chain currently. */ | |
3686 | bpstat bs = root_bs; | |
20874c92 | 3687 | int ix; |
429374b8 | 3688 | int need_remove_insert; |
c906108c | 3689 | |
429374b8 JK |
3690 | /* ALL_BP_LOCATIONS iteration would break across |
3691 | update_global_location_list possibly executed by | |
3692 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 3693 | |
429374b8 JK |
3694 | ALL_BREAKPOINTS (b) |
3695 | { | |
3696 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
3697 | continue; | |
a5606eee | 3698 | |
429374b8 JK |
3699 | for (bl = b->loc; bl != NULL; bl = bl->next) |
3700 | { | |
3701 | /* For hardware watchpoints, we look only at the first location. | |
3702 | The watchpoint_check function will work on entire expression, | |
3703 | not the individual locations. For read watchopints, the | |
3704 | watchpoints_triggered function have checked all locations | |
3705 | already. */ | |
3706 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3707 | break; | |
18a18393 | 3708 | |
429374b8 JK |
3709 | if (bl->shlib_disabled) |
3710 | continue; | |
c5aa993b | 3711 | |
429374b8 JK |
3712 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
3713 | continue; | |
c5aa993b | 3714 | |
429374b8 | 3715 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 3716 | |
429374b8 | 3717 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3718 | |
429374b8 JK |
3719 | /* Assume we stop. Should we find watchpoint that is not actually |
3720 | triggered, or if condition of breakpoint is false, we'll reset | |
3721 | 'stop' to 0. */ | |
3722 | bs->stop = 1; | |
3723 | bs->print = 1; | |
d983da9c | 3724 | |
429374b8 JK |
3725 | bpstat_check_watchpoint (bs); |
3726 | if (!bs->stop) | |
3727 | continue; | |
18a18393 | 3728 | |
429374b8 JK |
3729 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
3730 | || b->type == bp_longjmp_master) | |
3731 | /* We do not stop for these. */ | |
3732 | bs->stop = 0; | |
3733 | else | |
3734 | bpstat_check_breakpoint_conditions (bs, ptid); | |
3735 | ||
3736 | if (bs->stop) | |
3737 | { | |
3738 | ++(b->hit_count); | |
c906108c | 3739 | |
429374b8 JK |
3740 | /* We will stop here */ |
3741 | if (b->disposition == disp_disable) | |
3742 | { | |
3743 | if (b->enable_state != bp_permanent) | |
3744 | b->enable_state = bp_disabled; | |
3745 | update_global_location_list (0); | |
3746 | } | |
3747 | if (b->silent) | |
3748 | bs->print = 0; | |
3749 | bs->commands = b->commands; | |
3750 | if (bs->commands | |
3751 | && (strcmp ("silent", bs->commands->line) == 0 | |
3752 | || (xdb_commands && strcmp ("Q", | |
3753 | bs->commands->line) == 0))) | |
3754 | { | |
3755 | bs->commands = bs->commands->next; | |
3756 | bs->print = 0; | |
3757 | } | |
3758 | bs->commands = copy_command_lines (bs->commands); | |
3759 | } | |
3760 | ||
3761 | /* Print nothing for this entry if we dont stop or dont print. */ | |
3762 | if (bs->stop == 0 || bs->print == 0) | |
3763 | bs->print_it = print_it_noop; | |
3764 | } | |
3765 | } | |
876fa593 | 3766 | |
20874c92 VP |
3767 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3768 | { | |
6c95b8df PA |
3769 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
3770 | aspace, bp_addr)) | |
20874c92 VP |
3771 | { |
3772 | bs = bpstat_alloc (loc, bs); | |
3773 | /* For hits of moribund locations, we should just proceed. */ | |
3774 | bs->stop = 0; | |
3775 | bs->print = 0; | |
3776 | bs->print_it = print_it_noop; | |
3777 | } | |
3778 | } | |
3779 | ||
c906108c | 3780 | bs->next = NULL; /* Terminate the chain */ |
c906108c | 3781 | |
d983da9c DJ |
3782 | /* If we aren't stopping, the value of some hardware watchpoint may |
3783 | not have changed, but the intermediate memory locations we are | |
3784 | watching may have. Don't bother if we're stopping; this will get | |
3785 | done later. */ | |
3786 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3787 | if (bs->stop) | |
3788 | break; | |
3789 | ||
d832cb68 | 3790 | need_remove_insert = 0; |
d983da9c DJ |
3791 | if (bs == NULL) |
3792 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3793 | if (!bs->stop | |
20874c92 | 3794 | && bs->breakpoint_at->owner |
2d134ed3 | 3795 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 3796 | { |
2d134ed3 PA |
3797 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
3798 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
3799 | Prevent further code from trying to use it. */ | |
a5606eee | 3800 | bs->breakpoint_at = NULL; |
d832cb68 | 3801 | need_remove_insert = 1; |
d983da9c DJ |
3802 | } |
3803 | ||
d832cb68 | 3804 | if (need_remove_insert) |
2d134ed3 | 3805 | update_global_location_list (1); |
d832cb68 | 3806 | |
d983da9c | 3807 | return root_bs->next; |
c906108c SS |
3808 | } |
3809 | \f | |
3810 | /* Tell what to do about this bpstat. */ | |
3811 | struct bpstat_what | |
fba45db2 | 3812 | bpstat_what (bpstat bs) |
c906108c SS |
3813 | { |
3814 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3815 | enum class |
3816 | { | |
3817 | /* This bpstat element has no effect on the main_action. */ | |
3818 | no_effect = 0, | |
3819 | ||
3820 | /* There was a watchpoint, stop but don't print. */ | |
3821 | wp_silent, | |
c906108c | 3822 | |
c5aa993b JM |
3823 | /* There was a watchpoint, stop and print. */ |
3824 | wp_noisy, | |
c906108c | 3825 | |
c5aa993b JM |
3826 | /* There was a breakpoint but we're not stopping. */ |
3827 | bp_nostop, | |
c906108c | 3828 | |
c5aa993b JM |
3829 | /* There was a breakpoint, stop but don't print. */ |
3830 | bp_silent, | |
c906108c | 3831 | |
c5aa993b JM |
3832 | /* There was a breakpoint, stop and print. */ |
3833 | bp_noisy, | |
c906108c | 3834 | |
c5aa993b JM |
3835 | /* We hit the longjmp breakpoint. */ |
3836 | long_jump, | |
c906108c | 3837 | |
c5aa993b JM |
3838 | /* We hit the longjmp_resume breakpoint. */ |
3839 | long_resume, | |
c906108c | 3840 | |
c5aa993b JM |
3841 | /* We hit the step_resume breakpoint. */ |
3842 | step_resume, | |
c906108c | 3843 | |
c5aa993b JM |
3844 | /* We hit the shared library event breakpoint. */ |
3845 | shlib_event, | |
c906108c | 3846 | |
4efc6507 DE |
3847 | /* We hit the jit event breakpoint. */ |
3848 | jit_event, | |
3849 | ||
c5aa993b JM |
3850 | /* This is just used to count how many enums there are. */ |
3851 | class_last | |
c906108c SS |
3852 | }; |
3853 | ||
3854 | /* Here is the table which drives this routine. So that we can | |
3855 | format it pretty, we define some abbreviations for the | |
3856 | enum bpstat_what codes. */ | |
3857 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3858 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3859 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3860 | #define sgl BPSTAT_WHAT_SINGLE | |
3861 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3862 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3863 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3864 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 3865 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
3866 | |
3867 | /* "Can't happen." Might want to print an error message. | |
3868 | abort() is not out of the question, but chances are GDB is just | |
3869 | a bit confused, not unusable. */ | |
3870 | #define err BPSTAT_WHAT_STOP_NOISY | |
3871 | ||
3872 | /* Given an old action and a class, come up with a new action. */ | |
3873 | /* One interesting property of this table is that wp_silent is the same | |
3874 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3875 | after stopping, the check for whether to step over a breakpoint | |
3876 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3877 | reference to how we stopped. We retain separate wp_silent and |
3878 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3879 | |
3880 | Another possibly interesting property of this table is that | |
3881 | there's a partial ordering, priority-like, of the actions. Once | |
3882 | you've decided that some action is appropriate, you'll never go | |
3883 | back and decide something of a lower priority is better. The | |
3884 | ordering is: | |
3885 | ||
4efc6507 DE |
3886 | kc < jit clr sgl shl slr sn sr ss |
3887 | sgl < jit shl slr sn sr ss | |
3888 | slr < jit err shl sn sr ss | |
3889 | clr < jit err shl sn sr ss | |
3890 | ss < jit shl sn sr | |
3891 | sn < jit shl sr | |
3892 | jit < shl sr | |
d81191fc | 3893 | shl < sr |
4d5b2cd7 | 3894 | sr < |
c5aa993b | 3895 | |
43ff13b4 JM |
3896 | What I think this means is that we don't need a damned table |
3897 | here. If you just put the rows and columns in the right order, | |
3898 | it'd look awfully regular. We could simply walk the bpstat list | |
3899 | and choose the highest priority action we find, with a little | |
78b6a731 | 3900 | logic to handle the 'err' cases. */ |
c906108c SS |
3901 | |
3902 | /* step_resume entries: a step resume breakpoint overrides another | |
3903 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3904 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3905 | |
3906 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3907 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3908 | { | |
3909 | /* old action */ | |
4efc6507 DE |
3910 | /* kc ss sn sgl slr clr sr shl jit */ |
3911 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
3912 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
3913 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
3914 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
3915 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
3916 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
3917 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
3918 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
3919 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
3920 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
3921 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 3922 | }; |
c906108c SS |
3923 | |
3924 | #undef kc | |
3925 | #undef ss | |
3926 | #undef sn | |
3927 | #undef sgl | |
3928 | #undef slr | |
3929 | #undef clr | |
c906108c SS |
3930 | #undef err |
3931 | #undef sr | |
3932 | #undef ts | |
3933 | #undef shl | |
4efc6507 | 3934 | #undef jit |
c906108c SS |
3935 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3936 | struct bpstat_what retval; | |
3937 | ||
3938 | retval.call_dummy = 0; | |
3939 | for (; bs != NULL; bs = bs->next) | |
3940 | { | |
3941 | enum class bs_class = no_effect; | |
3942 | if (bs->breakpoint_at == NULL) | |
3943 | /* I suspect this can happen if it was a momentary breakpoint | |
3944 | which has since been deleted. */ | |
3945 | continue; | |
20874c92 VP |
3946 | if (bs->breakpoint_at->owner == NULL) |
3947 | bs_class = bp_nostop; | |
3948 | else | |
4f8d1dc6 | 3949 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3950 | { |
3951 | case bp_none: | |
3952 | continue; | |
3953 | ||
3954 | case bp_breakpoint: | |
3955 | case bp_hardware_breakpoint: | |
3956 | case bp_until: | |
3957 | case bp_finish: | |
3958 | if (bs->stop) | |
3959 | { | |
3960 | if (bs->print) | |
3961 | bs_class = bp_noisy; | |
3962 | else | |
3963 | bs_class = bp_silent; | |
3964 | } | |
3965 | else | |
3966 | bs_class = bp_nostop; | |
3967 | break; | |
3968 | case bp_watchpoint: | |
3969 | case bp_hardware_watchpoint: | |
3970 | case bp_read_watchpoint: | |
3971 | case bp_access_watchpoint: | |
3972 | if (bs->stop) | |
3973 | { | |
3974 | if (bs->print) | |
3975 | bs_class = wp_noisy; | |
3976 | else | |
3977 | bs_class = wp_silent; | |
3978 | } | |
3979 | else | |
53a5351d JM |
3980 | /* There was a watchpoint, but we're not stopping. |
3981 | This requires no further action. */ | |
c906108c SS |
3982 | bs_class = no_effect; |
3983 | break; | |
3984 | case bp_longjmp: | |
3985 | bs_class = long_jump; | |
3986 | break; | |
3987 | case bp_longjmp_resume: | |
3988 | bs_class = long_resume; | |
3989 | break; | |
3990 | case bp_step_resume: | |
3991 | if (bs->stop) | |
3992 | { | |
3993 | bs_class = step_resume; | |
3994 | } | |
3995 | else | |
3996 | /* It is for the wrong frame. */ | |
3997 | bs_class = bp_nostop; | |
3998 | break; | |
c906108c SS |
3999 | case bp_watchpoint_scope: |
4000 | bs_class = bp_nostop; | |
4001 | break; | |
c5aa993b JM |
4002 | case bp_shlib_event: |
4003 | bs_class = shlib_event; | |
4004 | break; | |
4efc6507 DE |
4005 | case bp_jit_event: |
4006 | bs_class = jit_event; | |
4007 | break; | |
c4093a6a | 4008 | case bp_thread_event: |
1900040c | 4009 | case bp_overlay_event: |
0fd8e87f | 4010 | case bp_longjmp_master: |
c4093a6a JM |
4011 | bs_class = bp_nostop; |
4012 | break; | |
ce78b96d | 4013 | case bp_catchpoint: |
c5aa993b JM |
4014 | if (bs->stop) |
4015 | { | |
4016 | if (bs->print) | |
4017 | bs_class = bp_noisy; | |
4018 | else | |
4019 | bs_class = bp_silent; | |
4020 | } | |
4021 | else | |
53a5351d JM |
4022 | /* There was a catchpoint, but we're not stopping. |
4023 | This requires no further action. */ | |
c5aa993b JM |
4024 | bs_class = no_effect; |
4025 | break; | |
c906108c | 4026 | case bp_call_dummy: |
53a5351d JM |
4027 | /* Make sure the action is stop (silent or noisy), |
4028 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
4029 | bs_class = bp_silent; |
4030 | retval.call_dummy = 1; | |
4031 | break; | |
1042e4c0 | 4032 | case bp_tracepoint: |
7a697b8d | 4033 | case bp_fast_tracepoint: |
1042e4c0 SS |
4034 | /* Tracepoint hits should not be reported back to GDB, and |
4035 | if one got through somehow, it should have been filtered | |
4036 | out already. */ | |
4037 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4038 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 4039 | break; |
c906108c | 4040 | } |
c5aa993b | 4041 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
4042 | } |
4043 | retval.main_action = current_action; | |
4044 | return retval; | |
4045 | } | |
4046 | ||
4047 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4048 | without hardware support). This isn't related to a specific bpstat, | |
4049 | just to things like whether watchpoints are set. */ | |
4050 | ||
c5aa993b | 4051 | int |
fba45db2 | 4052 | bpstat_should_step (void) |
c906108c SS |
4053 | { |
4054 | struct breakpoint *b; | |
4055 | ALL_BREAKPOINTS (b) | |
717a8278 | 4056 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4057 | return 1; |
c906108c SS |
4058 | return 0; |
4059 | } | |
4060 | ||
67822962 PA |
4061 | int |
4062 | bpstat_causes_stop (bpstat bs) | |
4063 | { | |
4064 | for (; bs != NULL; bs = bs->next) | |
4065 | if (bs->stop) | |
4066 | return 1; | |
4067 | ||
4068 | return 0; | |
4069 | } | |
4070 | ||
c906108c | 4071 | \f |
c5aa993b | 4072 | |
859825b8 JK |
4073 | /* Print the LOC location out of the list of B->LOC locations. */ |
4074 | ||
0d381245 VP |
4075 | static void print_breakpoint_location (struct breakpoint *b, |
4076 | struct bp_location *loc, | |
4077 | char *wrap_indent, | |
4078 | struct ui_stream *stb) | |
4079 | { | |
6c95b8df PA |
4080 | struct cleanup *old_chain = save_current_program_space (); |
4081 | ||
859825b8 JK |
4082 | if (loc != NULL && loc->shlib_disabled) |
4083 | loc = NULL; | |
4084 | ||
6c95b8df PA |
4085 | if (loc != NULL) |
4086 | set_current_program_space (loc->pspace); | |
4087 | ||
859825b8 | 4088 | if (b->source_file && loc) |
0d381245 VP |
4089 | { |
4090 | struct symbol *sym | |
4091 | = find_pc_sect_function (loc->address, loc->section); | |
4092 | if (sym) | |
4093 | { | |
4094 | ui_out_text (uiout, "in "); | |
4095 | ui_out_field_string (uiout, "func", | |
4096 | SYMBOL_PRINT_NAME (sym)); | |
4097 | ui_out_wrap_hint (uiout, wrap_indent); | |
4098 | ui_out_text (uiout, " at "); | |
4099 | } | |
4100 | ui_out_field_string (uiout, "file", b->source_file); | |
4101 | ui_out_text (uiout, ":"); | |
4102 | ||
4103 | if (ui_out_is_mi_like_p (uiout)) | |
4104 | { | |
4105 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4106 | char *fullname = symtab_to_fullname (sal.symtab); | |
4107 | ||
4108 | if (fullname) | |
4109 | ui_out_field_string (uiout, "fullname", fullname); | |
4110 | } | |
4111 | ||
4112 | ui_out_field_int (uiout, "line", b->line_number); | |
4113 | } | |
859825b8 | 4114 | else if (loc) |
0d381245 | 4115 | { |
22e722e1 DJ |
4116 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4117 | demangle, ""); | |
0d381245 VP |
4118 | ui_out_field_stream (uiout, "at", stb); |
4119 | } | |
859825b8 JK |
4120 | else |
4121 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4122 | |
4123 | do_cleanups (old_chain); | |
0d381245 VP |
4124 | } |
4125 | ||
c4093a6a | 4126 | /* Print B to gdb_stdout. */ |
c906108c | 4127 | static void |
0d381245 VP |
4128 | print_one_breakpoint_location (struct breakpoint *b, |
4129 | struct bp_location *loc, | |
4130 | int loc_number, | |
a6d9a66e | 4131 | struct bp_location **last_loc, |
6c95b8df PA |
4132 | int print_address_bits, |
4133 | int allflag) | |
c906108c | 4134 | { |
52f0bd74 AC |
4135 | struct command_line *l; |
4136 | struct symbol *sym; | |
c4093a6a JM |
4137 | struct ep_type_description |
4138 | { | |
4139 | enum bptype type; | |
4140 | char *description; | |
4141 | }; | |
4142 | static struct ep_type_description bptypes[] = | |
c906108c | 4143 | { |
c5aa993b JM |
4144 | {bp_none, "?deleted?"}, |
4145 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4146 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4147 | {bp_until, "until"}, |
4148 | {bp_finish, "finish"}, | |
4149 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4150 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4151 | {bp_read_watchpoint, "read watchpoint"}, |
4152 | {bp_access_watchpoint, "acc watchpoint"}, | |
4153 | {bp_longjmp, "longjmp"}, | |
4154 | {bp_longjmp_resume, "longjmp resume"}, | |
4155 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4156 | {bp_watchpoint_scope, "watchpoint scope"}, |
4157 | {bp_call_dummy, "call dummy"}, | |
4158 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 4159 | {bp_thread_event, "thread events"}, |
1900040c | 4160 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4161 | {bp_longjmp_master, "longjmp master"}, |
ce78b96d | 4162 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4163 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4164 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4165 | {bp_jit_event, "jit events"}, |
c5aa993b | 4166 | }; |
c4093a6a | 4167 | |
c2c6d25f | 4168 | static char bpenables[] = "nynny"; |
c906108c | 4169 | char wrap_indent[80]; |
8b93c638 JM |
4170 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4171 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4172 | struct cleanup *bkpt_chain; |
c906108c | 4173 | |
0d381245 VP |
4174 | int header_of_multiple = 0; |
4175 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4176 | struct value_print_options opts; |
4177 | ||
4178 | get_user_print_options (&opts); | |
0d381245 VP |
4179 | |
4180 | gdb_assert (!loc || loc_number != 0); | |
4181 | /* See comment in print_one_breakpoint concerning | |
4182 | treatment of breakpoints with single disabled | |
4183 | location. */ | |
4184 | if (loc == NULL | |
4185 | && (b->loc != NULL | |
4186 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4187 | header_of_multiple = 1; | |
4188 | if (loc == NULL) | |
4189 | loc = b->loc; | |
4190 | ||
c4093a6a | 4191 | annotate_record (); |
3b31d625 | 4192 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4193 | |
4194 | /* 1 */ | |
4195 | annotate_field (0); | |
0d381245 VP |
4196 | if (part_of_multiple) |
4197 | { | |
4198 | char *formatted; | |
0c6773c1 | 4199 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4200 | ui_out_field_string (uiout, "number", formatted); |
4201 | xfree (formatted); | |
4202 | } | |
4203 | else | |
4204 | { | |
4205 | ui_out_field_int (uiout, "number", b->number); | |
4206 | } | |
c4093a6a JM |
4207 | |
4208 | /* 2 */ | |
4209 | annotate_field (1); | |
0d381245 VP |
4210 | if (part_of_multiple) |
4211 | ui_out_field_skip (uiout, "type"); | |
4212 | else | |
4213 | { | |
4214 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4215 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4216 | internal_error (__FILE__, __LINE__, | |
4217 | _("bptypes table does not describe type #%d."), | |
4218 | (int) b->type); | |
4219 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4220 | } | |
c4093a6a JM |
4221 | |
4222 | /* 3 */ | |
4223 | annotate_field (2); | |
0d381245 VP |
4224 | if (part_of_multiple) |
4225 | ui_out_field_skip (uiout, "disp"); | |
4226 | else | |
2cec12e5 | 4227 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4228 | |
c4093a6a JM |
4229 | |
4230 | /* 4 */ | |
4231 | annotate_field (3); | |
0d381245 | 4232 | if (part_of_multiple) |
54e52265 | 4233 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4234 | else |
54e52265 VP |
4235 | ui_out_field_fmt (uiout, "enabled", "%c", |
4236 | bpenables[(int) b->enable_state]); | |
4237 | ui_out_spaces (uiout, 2); | |
0d381245 | 4238 | |
c4093a6a JM |
4239 | |
4240 | /* 5 and 6 */ | |
4241 | strcpy (wrap_indent, " "); | |
79a45b7d | 4242 | if (opts.addressprint) |
75ac9d7b | 4243 | { |
a6d9a66e | 4244 | if (print_address_bits <= 32) |
75ac9d7b MS |
4245 | strcat (wrap_indent, " "); |
4246 | else | |
4247 | strcat (wrap_indent, " "); | |
4248 | } | |
c906108c | 4249 | |
3086aeae | 4250 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4251 | { |
4252 | /* Although the print_one can possibly print | |
4253 | all locations, calling it here is not likely | |
4254 | to get any nice result. So, make sure there's | |
4255 | just one location. */ | |
4256 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4257 | b->ops->print_one (b, last_loc); |
0d381245 | 4258 | } |
3086aeae DJ |
4259 | else |
4260 | switch (b->type) | |
4261 | { | |
4262 | case bp_none: | |
4263 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4264 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4265 | break; |
c906108c | 4266 | |
3086aeae DJ |
4267 | case bp_watchpoint: |
4268 | case bp_hardware_watchpoint: | |
4269 | case bp_read_watchpoint: | |
4270 | case bp_access_watchpoint: | |
4271 | /* Field 4, the address, is omitted (which makes the columns | |
4272 | not line up too nicely with the headers, but the effect | |
4273 | is relatively readable). */ | |
79a45b7d | 4274 | if (opts.addressprint) |
3086aeae DJ |
4275 | ui_out_field_skip (uiout, "addr"); |
4276 | annotate_field (5); | |
fa8a61dc | 4277 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4278 | break; |
4279 | ||
3086aeae DJ |
4280 | case bp_breakpoint: |
4281 | case bp_hardware_breakpoint: | |
4282 | case bp_until: | |
4283 | case bp_finish: | |
4284 | case bp_longjmp: | |
4285 | case bp_longjmp_resume: | |
4286 | case bp_step_resume: | |
3086aeae DJ |
4287 | case bp_watchpoint_scope: |
4288 | case bp_call_dummy: | |
4289 | case bp_shlib_event: | |
4290 | case bp_thread_event: | |
4291 | case bp_overlay_event: | |
0fd8e87f | 4292 | case bp_longjmp_master: |
1042e4c0 | 4293 | case bp_tracepoint: |
7a697b8d | 4294 | case bp_fast_tracepoint: |
4efc6507 | 4295 | case bp_jit_event: |
79a45b7d | 4296 | if (opts.addressprint) |
3086aeae DJ |
4297 | { |
4298 | annotate_field (4); | |
54e52265 | 4299 | if (header_of_multiple) |
0d381245 | 4300 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4301 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4302 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4303 | else |
5af949e3 UW |
4304 | ui_out_field_core_addr (uiout, "addr", |
4305 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4306 | } |
4307 | annotate_field (5); | |
0d381245 VP |
4308 | if (!header_of_multiple) |
4309 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4310 | if (b->loc) | |
a6d9a66e | 4311 | *last_loc = b->loc; |
3086aeae DJ |
4312 | break; |
4313 | } | |
c906108c | 4314 | |
6c95b8df PA |
4315 | |
4316 | /* For backward compatibility, don't display inferiors unless there | |
4317 | are several. */ | |
4318 | if (loc != NULL | |
4319 | && !header_of_multiple | |
4320 | && (allflag | |
4321 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4322 | && (number_of_program_spaces () > 1 | |
4323 | || number_of_inferiors () > 1) | |
4324 | && loc->owner->type != bp_catchpoint))) | |
4325 | { | |
4326 | struct inferior *inf; | |
4327 | int first = 1; | |
4328 | ||
4329 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4330 | { | |
4331 | if (inf->pspace == loc->pspace) | |
4332 | { | |
4333 | if (first) | |
4334 | { | |
4335 | first = 0; | |
4336 | ui_out_text (uiout, " inf "); | |
4337 | } | |
4338 | else | |
4339 | ui_out_text (uiout, ", "); | |
4340 | ui_out_text (uiout, plongest (inf->num)); | |
4341 | } | |
4342 | } | |
4343 | } | |
4344 | ||
4a306c9a | 4345 | if (!part_of_multiple) |
c4093a6a | 4346 | { |
4a306c9a JB |
4347 | if (b->thread != -1) |
4348 | { | |
4349 | /* FIXME: This seems to be redundant and lost here; see the | |
4350 | "stop only in" line a little further down. */ | |
4351 | ui_out_text (uiout, " thread "); | |
4352 | ui_out_field_int (uiout, "thread", b->thread); | |
4353 | } | |
4354 | else if (b->task != 0) | |
4355 | { | |
4356 | ui_out_text (uiout, " task "); | |
4357 | ui_out_field_int (uiout, "task", b->task); | |
4358 | } | |
c4093a6a JM |
4359 | } |
4360 | ||
8b93c638 | 4361 | ui_out_text (uiout, "\n"); |
c4093a6a | 4362 | |
0d381245 | 4363 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4364 | { |
4365 | annotate_field (6); | |
8b93c638 | 4366 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4367 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4368 | the frame ID. */ | |
5af949e3 UW |
4369 | ui_out_field_core_addr (uiout, "frame", |
4370 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4371 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4372 | } |
4373 | ||
0d381245 | 4374 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4375 | { |
f7f9143b JB |
4376 | /* We do not print the condition for Ada exception catchpoints |
4377 | because the condition is an internal implementation detail | |
4378 | that we do not want to expose to the user. */ | |
c4093a6a | 4379 | annotate_field (7); |
7a697b8d | 4380 | if (tracepoint_type (b)) |
1042e4c0 SS |
4381 | ui_out_text (uiout, "\ttrace only if "); |
4382 | else | |
4383 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4384 | ui_out_field_string (uiout, "cond", b->cond_string); |
4385 | ui_out_text (uiout, "\n"); | |
4386 | } | |
4387 | ||
0d381245 | 4388 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4389 | { |
4390 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4391 | ui_out_text (uiout, "\tstop only in thread "); |
4392 | ui_out_field_int (uiout, "thread", b->thread); | |
4393 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4394 | } |
4395 | ||
63c715c6 | 4396 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4397 | { |
4398 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4399 | if (ep_is_catchpoint (b)) |
4400 | ui_out_text (uiout, "\tcatchpoint"); | |
4401 | else | |
4402 | ui_out_text (uiout, "\tbreakpoint"); | |
4403 | ui_out_text (uiout, " already hit "); | |
4404 | ui_out_field_int (uiout, "times", b->hit_count); | |
4405 | if (b->hit_count == 1) | |
4406 | ui_out_text (uiout, " time\n"); | |
4407 | else | |
4408 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4409 | } |
4410 | ||
fb40c209 AC |
4411 | /* Output the count also if it is zero, but only if this is |
4412 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4413 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4414 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4415 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4416 | |
0d381245 | 4417 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4418 | { |
4419 | annotate_field (8); | |
8b93c638 JM |
4420 | ui_out_text (uiout, "\tignore next "); |
4421 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4422 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4423 | } |
059fb39f PM |
4424 | |
4425 | l = b->commands; | |
4426 | if (!part_of_multiple && l) | |
c4093a6a | 4427 | { |
3b31d625 EZ |
4428 | struct cleanup *script_chain; |
4429 | ||
c4093a6a | 4430 | annotate_field (9); |
3b31d625 | 4431 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4432 | print_command_lines (uiout, l, 4); |
3b31d625 | 4433 | do_cleanups (script_chain); |
c4093a6a | 4434 | } |
d24317b4 | 4435 | |
1042e4c0 SS |
4436 | if (!part_of_multiple && b->pass_count) |
4437 | { | |
4438 | annotate_field (10); | |
4439 | ui_out_text (uiout, "\tpass count "); | |
4440 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4441 | ui_out_text (uiout, " \n"); | |
4442 | } | |
4443 | ||
4444 | if (!part_of_multiple && b->step_count) | |
4445 | { | |
4446 | annotate_field (11); | |
4447 | ui_out_text (uiout, "\tstep count "); | |
4448 | ui_out_field_int (uiout, "step", b->step_count); | |
4449 | ui_out_text (uiout, " \n"); | |
4450 | } | |
4451 | ||
4452 | if (!part_of_multiple && b->actions) | |
4453 | { | |
4454 | struct action_line *action; | |
4455 | annotate_field (12); | |
4456 | for (action = b->actions; action; action = action->next) | |
4457 | { | |
4458 | ui_out_text (uiout, " A\t"); | |
4459 | ui_out_text (uiout, action->action); | |
4460 | ui_out_text (uiout, "\n"); | |
4461 | } | |
4462 | } | |
4463 | ||
d24317b4 VP |
4464 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4465 | { | |
4466 | if (b->addr_string) | |
4467 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4468 | else if (b->exp_string) | |
4469 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4470 | } | |
4471 | ||
3b31d625 | 4472 | do_cleanups (bkpt_chain); |
8b93c638 | 4473 | do_cleanups (old_chain); |
c4093a6a | 4474 | } |
c5aa993b | 4475 | |
0d381245 VP |
4476 | static void |
4477 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4478 | struct bp_location **last_loc, int print_address_bits, |
4479 | int allflag) | |
0d381245 | 4480 | { |
6c95b8df PA |
4481 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4482 | print_address_bits, allflag); | |
0d381245 VP |
4483 | |
4484 | /* If this breakpoint has custom print function, | |
4485 | it's already printed. Otherwise, print individual | |
4486 | locations, if any. */ | |
4487 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4488 | { | |
4489 | /* If breakpoint has a single location that is | |
4490 | disabled, we print it as if it had | |
4491 | several locations, since otherwise it's hard to | |
4492 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4493 | situation. |
4494 | Note that while hardware watchpoints have | |
4495 | several locations internally, that's no a property | |
4496 | exposed to user. */ | |
0d381245 | 4497 | if (b->loc |
a5606eee | 4498 | && !is_hardware_watchpoint (b) |
0d381245 | 4499 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4500 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4501 | { |
4502 | struct bp_location *loc; | |
4503 | int n = 1; | |
4504 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4505 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4506 | print_address_bits, allflag); |
0d381245 VP |
4507 | } |
4508 | } | |
4509 | } | |
4510 | ||
a6d9a66e UW |
4511 | static int |
4512 | breakpoint_address_bits (struct breakpoint *b) | |
4513 | { | |
4514 | int print_address_bits = 0; | |
4515 | struct bp_location *loc; | |
4516 | ||
4517 | for (loc = b->loc; loc; loc = loc->next) | |
4518 | { | |
c561c276 | 4519 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
4520 | if (addr_bit > print_address_bits) |
4521 | print_address_bits = addr_bit; | |
4522 | } | |
4523 | ||
4524 | return print_address_bits; | |
4525 | } | |
0d381245 | 4526 | |
c4093a6a JM |
4527 | struct captured_breakpoint_query_args |
4528 | { | |
4529 | int bnum; | |
4530 | }; | |
c5aa993b | 4531 | |
c4093a6a | 4532 | static int |
2b65245e | 4533 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4534 | { |
4535 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4536 | struct breakpoint *b; |
a6d9a66e | 4537 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
4538 | ALL_BREAKPOINTS (b) |
4539 | { | |
4540 | if (args->bnum == b->number) | |
c5aa993b | 4541 | { |
a6d9a66e | 4542 | int print_address_bits = breakpoint_address_bits (b); |
6c95b8df | 4543 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4544 | return GDB_RC_OK; |
c5aa993b | 4545 | } |
c4093a6a JM |
4546 | } |
4547 | return GDB_RC_NONE; | |
4548 | } | |
c5aa993b | 4549 | |
c4093a6a | 4550 | enum gdb_rc |
ce43223b | 4551 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4552 | { |
4553 | struct captured_breakpoint_query_args args; | |
4554 | args.bnum = bnum; | |
4555 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4556 | an error. */ | |
b0b13bb4 DJ |
4557 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4558 | error_message, RETURN_MASK_ALL) < 0) | |
4559 | return GDB_RC_FAIL; | |
4560 | else | |
4561 | return GDB_RC_OK; | |
c4093a6a | 4562 | } |
c5aa993b | 4563 | |
7f3b0473 AC |
4564 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4565 | catchpoints, et.al.). */ | |
4566 | ||
4567 | static int | |
4568 | user_settable_breakpoint (const struct breakpoint *b) | |
4569 | { | |
4570 | return (b->type == bp_breakpoint | |
ce78b96d | 4571 | || b->type == bp_catchpoint |
7f3b0473 | 4572 | || b->type == bp_hardware_breakpoint |
7a697b8d | 4573 | || tracepoint_type (b) |
7f3b0473 AC |
4574 | || b->type == bp_watchpoint |
4575 | || b->type == bp_read_watchpoint | |
4576 | || b->type == bp_access_watchpoint | |
4577 | || b->type == bp_hardware_watchpoint); | |
4578 | } | |
4579 | ||
4580 | /* Print information on user settable breakpoint (watchpoint, etc) | |
4581 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
4582 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 4583 | |
c4093a6a | 4584 | static void |
fba45db2 | 4585 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 4586 | { |
52f0bd74 | 4587 | struct breakpoint *b; |
a6d9a66e | 4588 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4589 | int nr_printable_breakpoints; |
3b31d625 | 4590 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4591 | struct value_print_options opts; |
a6d9a66e | 4592 | int print_address_bits = 0; |
c4093a6a | 4593 | |
79a45b7d TT |
4594 | get_user_print_options (&opts); |
4595 | ||
a6d9a66e UW |
4596 | /* Compute the number of rows in the table, as well as the |
4597 | size required for address fields. */ | |
7f3b0473 AC |
4598 | nr_printable_breakpoints = 0; |
4599 | ALL_BREAKPOINTS (b) | |
4600 | if (bnum == -1 | |
4601 | || bnum == b->number) | |
4602 | { | |
4603 | if (allflag || user_settable_breakpoint (b)) | |
a6d9a66e UW |
4604 | { |
4605 | int addr_bit = breakpoint_address_bits (b); | |
4606 | if (addr_bit > print_address_bits) | |
4607 | print_address_bits = addr_bit; | |
4608 | ||
4609 | nr_printable_breakpoints++; | |
4610 | } | |
7f3b0473 AC |
4611 | } |
4612 | ||
79a45b7d | 4613 | if (opts.addressprint) |
3b31d625 EZ |
4614 | bkpttbl_chain |
4615 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4616 | "BreakpointTable"); | |
8b93c638 | 4617 | else |
3b31d625 EZ |
4618 | bkpttbl_chain |
4619 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4620 | "BreakpointTable"); | |
8b93c638 | 4621 | |
7f3b0473 | 4622 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4623 | annotate_breakpoints_headers (); |
4624 | if (nr_printable_breakpoints > 0) | |
4625 | annotate_field (0); | |
0d381245 | 4626 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4627 | if (nr_printable_breakpoints > 0) |
4628 | annotate_field (1); | |
4629 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4630 | if (nr_printable_breakpoints > 0) | |
4631 | annotate_field (2); | |
4632 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4633 | if (nr_printable_breakpoints > 0) | |
4634 | annotate_field (3); | |
54e52265 | 4635 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4636 | if (opts.addressprint) |
7f3b0473 | 4637 | { |
d7faa9e7 AC |
4638 | if (nr_printable_breakpoints > 0) |
4639 | annotate_field (4); | |
a6d9a66e | 4640 | if (print_address_bits <= 32) |
b25959ec | 4641 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4642 | else |
b25959ec | 4643 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4644 | } |
d7faa9e7 AC |
4645 | if (nr_printable_breakpoints > 0) |
4646 | annotate_field (5); | |
4647 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4648 | ui_out_table_body (uiout); | |
4649 | if (nr_printable_breakpoints > 0) | |
4650 | annotate_breakpoints_table (); | |
7f3b0473 | 4651 | |
c4093a6a JM |
4652 | ALL_BREAKPOINTS (b) |
4653 | if (bnum == -1 | |
4654 | || bnum == b->number) | |
4655 | { | |
4656 | /* We only print out user settable breakpoints unless the | |
4657 | allflag is set. */ | |
7f3b0473 | 4658 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 4659 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a JM |
4660 | } |
4661 | ||
3b31d625 | 4662 | do_cleanups (bkpttbl_chain); |
698384cd | 4663 | |
7f3b0473 | 4664 | if (nr_printable_breakpoints == 0) |
c906108c | 4665 | { |
8b93c638 JM |
4666 | if (bnum == -1) |
4667 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4668 | else | |
4669 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4670 | bnum); | |
c906108c SS |
4671 | } |
4672 | else | |
c4093a6a | 4673 | { |
a6d9a66e UW |
4674 | if (last_loc && !server_command) |
4675 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 4676 | } |
c906108c | 4677 | |
c4093a6a JM |
4678 | /* FIXME? Should this be moved up so that it is only called when |
4679 | there have been breakpoints? */ | |
c906108c SS |
4680 | annotate_breakpoints_table_end (); |
4681 | } | |
4682 | ||
c906108c | 4683 | static void |
fba45db2 | 4684 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4685 | { |
4686 | int bnum = -1; | |
4687 | ||
4688 | if (bnum_exp) | |
bb518678 | 4689 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4690 | |
4691 | breakpoint_1 (bnum, 0); | |
4692 | } | |
4693 | ||
7a292a7a | 4694 | static void |
fba45db2 | 4695 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4696 | { |
4697 | int bnum = -1; | |
4698 | ||
4699 | if (bnum_exp) | |
bb518678 | 4700 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4701 | |
4702 | breakpoint_1 (bnum, 1); | |
4703 | } | |
4704 | ||
0d381245 | 4705 | static int |
714835d5 | 4706 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 4707 | struct program_space *pspace, |
714835d5 | 4708 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
4709 | { |
4710 | struct bp_location *bl = b->loc; | |
4711 | for (; bl; bl = bl->next) | |
4712 | { | |
6c95b8df PA |
4713 | if (bl->pspace == pspace |
4714 | && bl->address == pc | |
0d381245 VP |
4715 | && (!overlay_debugging || bl->section == section)) |
4716 | return 1; | |
4717 | } | |
4718 | return 0; | |
4719 | } | |
4720 | ||
6c95b8df PA |
4721 | /* Print a message describing any breakpoints set at PC. This |
4722 | concerns with logical breakpoints, so we match program spaces, not | |
4723 | address spaces. */ | |
c906108c SS |
4724 | |
4725 | static void | |
6c95b8df PA |
4726 | describe_other_breakpoints (struct gdbarch *gdbarch, |
4727 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 4728 | struct obj_section *section, int thread) |
c906108c | 4729 | { |
52f0bd74 AC |
4730 | int others = 0; |
4731 | struct breakpoint *b; | |
c906108c SS |
4732 | |
4733 | ALL_BREAKPOINTS (b) | |
6c95b8df | 4734 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
4735 | if (others > 0) |
4736 | { | |
a3f17187 AC |
4737 | if (others == 1) |
4738 | printf_filtered (_("Note: breakpoint ")); | |
4739 | else /* if (others == ???) */ | |
4740 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4741 | ALL_BREAKPOINTS (b) |
6c95b8df | 4742 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
4743 | { |
4744 | others--; | |
4745 | printf_filtered ("%d", b->number); | |
4746 | if (b->thread == -1 && thread != -1) | |
4747 | printf_filtered (" (all threads)"); | |
4748 | else if (b->thread != -1) | |
4749 | printf_filtered (" (thread %d)", b->thread); | |
4750 | printf_filtered ("%s%s ", | |
059fb39f | 4751 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
4752 | || b->enable_state == bp_call_disabled |
4753 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
4754 | ? " (disabled)" |
4755 | : b->enable_state == bp_permanent | |
4756 | ? " (permanent)" | |
4757 | : ""), | |
4758 | (others > 1) ? "," | |
4759 | : ((others == 1) ? " and" : "")); | |
4760 | } | |
a3f17187 | 4761 | printf_filtered (_("also set at pc ")); |
5af949e3 | 4762 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
4763 | printf_filtered (".\n"); |
4764 | } | |
4765 | } | |
4766 | \f | |
4767 | /* Set the default place to put a breakpoint | |
4768 | for the `break' command with no arguments. */ | |
4769 | ||
4770 | void | |
6c95b8df PA |
4771 | set_default_breakpoint (int valid, struct program_space *pspace, |
4772 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 4773 | int line) |
c906108c SS |
4774 | { |
4775 | default_breakpoint_valid = valid; | |
6c95b8df | 4776 | default_breakpoint_pspace = pspace; |
c906108c SS |
4777 | default_breakpoint_address = addr; |
4778 | default_breakpoint_symtab = symtab; | |
4779 | default_breakpoint_line = line; | |
4780 | } | |
4781 | ||
e4f237da KB |
4782 | /* Return true iff it is meaningful to use the address member of |
4783 | BPT. For some breakpoint types, the address member is irrelevant | |
4784 | and it makes no sense to attempt to compare it to other addresses | |
4785 | (or use it for any other purpose either). | |
4786 | ||
4787 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
4788 | have a zero valued address and we don't want to mark breakpoints of any of |
4789 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
4790 | |
4791 | bp_watchpoint | |
2d134ed3 PA |
4792 | bp_catchpoint |
4793 | ||
4794 | */ | |
e4f237da KB |
4795 | |
4796 | static int | |
4797 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4798 | { | |
4799 | enum bptype type = bpt->type; | |
4800 | ||
2d134ed3 PA |
4801 | return (type != bp_watchpoint && type != bp_catchpoint); |
4802 | } | |
4803 | ||
4804 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
4805 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
4806 | ||
4807 | static int | |
4808 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
4809 | { | |
85d721b8 PA |
4810 | /* Note that this checks the owner's type, not the location's. In |
4811 | case the target does not support read watchpoints, but does | |
4812 | support access watchpoints, we'll have bp_read_watchpoint | |
4813 | watchpoints with hw_access locations. Those should be considered | |
4814 | duplicates of hw_read locations. The hw_read locations will | |
4815 | become hw_access locations later. */ | |
2d134ed3 PA |
4816 | return (loc1->owner->type == loc2->owner->type |
4817 | && loc1->pspace->aspace == loc2->pspace->aspace | |
4818 | && loc1->address == loc2->address | |
4819 | && loc1->length == loc2->length); | |
e4f237da KB |
4820 | } |
4821 | ||
6c95b8df PA |
4822 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
4823 | same breakpoint location. In most targets, this can only be true | |
4824 | if ASPACE1 matches ASPACE2. On targets that have global | |
4825 | breakpoints, the address space doesn't really matter. */ | |
4826 | ||
4827 | static int | |
4828 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
4829 | struct address_space *aspace2, CORE_ADDR addr2) | |
4830 | { | |
4831 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
4832 | || aspace1 == aspace2) | |
4833 | && addr1 == addr2); | |
4834 | } | |
4835 | ||
2d134ed3 PA |
4836 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
4837 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
4838 | represent the same location. */ | |
4839 | ||
4840 | static int | |
4841 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
4842 | { | |
4843 | int hw_point1 = is_hardware_watchpoint (loc1->owner); | |
4844 | int hw_point2 = is_hardware_watchpoint (loc2->owner); | |
4845 | ||
4846 | if (hw_point1 != hw_point2) | |
4847 | return 0; | |
4848 | else if (hw_point1) | |
4849 | return watchpoint_locations_match (loc1, loc2); | |
4850 | else | |
4851 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
4852 | loc2->pspace->aspace, loc2->address); | |
4853 | } | |
4854 | ||
76897487 KB |
4855 | static void |
4856 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4857 | int bnum, int have_bnum) | |
4858 | { | |
4859 | char astr1[40]; | |
4860 | char astr2[40]; | |
4861 | ||
bb599908 PH |
4862 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4863 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4864 | if (have_bnum) |
8a3fe4f8 | 4865 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4866 | bnum, astr1, astr2); |
4867 | else | |
8a3fe4f8 | 4868 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4869 | } |
4870 | ||
4871 | /* Adjust a breakpoint's address to account for architectural constraints | |
4872 | on breakpoint placement. Return the adjusted address. Note: Very | |
4873 | few targets require this kind of adjustment. For most targets, | |
4874 | this function is simply the identity function. */ | |
4875 | ||
4876 | static CORE_ADDR | |
a6d9a66e UW |
4877 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
4878 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 4879 | { |
a6d9a66e | 4880 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
4881 | { |
4882 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4883 | return bpaddr; | |
4884 | } | |
88f7da05 KB |
4885 | else if (bptype == bp_watchpoint |
4886 | || bptype == bp_hardware_watchpoint | |
4887 | || bptype == bp_read_watchpoint | |
4888 | || bptype == bp_access_watchpoint | |
fe798b75 | 4889 | || bptype == bp_catchpoint) |
88f7da05 KB |
4890 | { |
4891 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4892 | have their addresses modified. */ | |
4893 | return bpaddr; | |
4894 | } | |
76897487 KB |
4895 | else |
4896 | { | |
4897 | CORE_ADDR adjusted_bpaddr; | |
4898 | ||
4899 | /* Some targets have architectural constraints on the placement | |
4900 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 4901 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
4902 | |
4903 | /* An adjusted breakpoint address can significantly alter | |
4904 | a user's expectations. Print a warning if an adjustment | |
4905 | is required. */ | |
4906 | if (adjusted_bpaddr != bpaddr) | |
4907 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4908 | ||
4909 | return adjusted_bpaddr; | |
4910 | } | |
4911 | } | |
4912 | ||
7cc221ef DJ |
4913 | /* Allocate a struct bp_location. */ |
4914 | ||
26bb91f3 | 4915 | static struct bp_location * |
39d61571 | 4916 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4917 | { |
4918 | struct bp_location *loc, *loc_p; | |
4919 | ||
4920 | loc = xmalloc (sizeof (struct bp_location)); | |
4921 | memset (loc, 0, sizeof (*loc)); | |
4922 | ||
e049a4b5 | 4923 | loc->owner = bpt; |
511a6cd4 | 4924 | loc->cond = NULL; |
0d381245 VP |
4925 | loc->shlib_disabled = 0; |
4926 | loc->enabled = 1; | |
e049a4b5 | 4927 | |
39d61571 | 4928 | switch (bpt->type) |
e049a4b5 DJ |
4929 | { |
4930 | case bp_breakpoint: | |
4931 | case bp_until: | |
4932 | case bp_finish: | |
4933 | case bp_longjmp: | |
4934 | case bp_longjmp_resume: | |
4935 | case bp_step_resume: | |
e049a4b5 DJ |
4936 | case bp_watchpoint_scope: |
4937 | case bp_call_dummy: | |
4938 | case bp_shlib_event: | |
4939 | case bp_thread_event: | |
4940 | case bp_overlay_event: | |
4efc6507 | 4941 | case bp_jit_event: |
0fd8e87f | 4942 | case bp_longjmp_master: |
e049a4b5 DJ |
4943 | loc->loc_type = bp_loc_software_breakpoint; |
4944 | break; | |
4945 | case bp_hardware_breakpoint: | |
4946 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4947 | break; | |
4948 | case bp_hardware_watchpoint: | |
4949 | case bp_read_watchpoint: | |
4950 | case bp_access_watchpoint: | |
4951 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4952 | break; | |
4953 | case bp_watchpoint: | |
ce78b96d | 4954 | case bp_catchpoint: |
15c3d785 PA |
4955 | case bp_tracepoint: |
4956 | case bp_fast_tracepoint: | |
e049a4b5 DJ |
4957 | loc->loc_type = bp_loc_other; |
4958 | break; | |
4959 | default: | |
e2e0b3e5 | 4960 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4961 | } |
4962 | ||
7cc221ef DJ |
4963 | return loc; |
4964 | } | |
4965 | ||
fe3f5fa8 VP |
4966 | static void free_bp_location (struct bp_location *loc) |
4967 | { | |
4968 | if (loc->cond) | |
4969 | xfree (loc->cond); | |
74960c60 VP |
4970 | |
4971 | if (loc->function_name) | |
4972 | xfree (loc->function_name); | |
4973 | ||
fe3f5fa8 VP |
4974 | xfree (loc); |
4975 | } | |
4976 | ||
0d381245 VP |
4977 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4978 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 4979 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 4980 | |
c40e75cd | 4981 | static struct breakpoint * |
a6d9a66e UW |
4982 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
4983 | enum bptype bptype) | |
c906108c | 4984 | { |
52f0bd74 | 4985 | struct breakpoint *b, *b1; |
c906108c SS |
4986 | |
4987 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4988 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4989 | |
4d28f7a8 | 4990 | b->type = bptype; |
a6d9a66e | 4991 | b->gdbarch = gdbarch; |
c906108c SS |
4992 | b->language = current_language->la_language; |
4993 | b->input_radix = input_radix; | |
4994 | b->thread = -1; | |
b5de0fa7 | 4995 | b->enable_state = bp_enabled; |
c906108c SS |
4996 | b->next = 0; |
4997 | b->silent = 0; | |
4998 | b->ignore_count = 0; | |
4999 | b->commands = NULL; | |
818dd999 | 5000 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5001 | b->forked_inferior_pid = null_ptid; |
c906108c | 5002 | b->exec_pathname = NULL; |
a96d9b2e | 5003 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5004 | b->ops = NULL; |
0d381245 | 5005 | b->condition_not_parsed = 0; |
c906108c SS |
5006 | |
5007 | /* Add this breakpoint to the end of the chain | |
5008 | so that a list of breakpoints will come out in order | |
5009 | of increasing numbers. */ | |
5010 | ||
5011 | b1 = breakpoint_chain; | |
5012 | if (b1 == 0) | |
5013 | breakpoint_chain = b; | |
5014 | else | |
5015 | { | |
5016 | while (b1->next) | |
5017 | b1 = b1->next; | |
5018 | b1->next = b; | |
5019 | } | |
0d381245 VP |
5020 | return b; |
5021 | } | |
5022 | ||
5023 | /* Initialize loc->function_name. */ | |
5024 | static void | |
5025 | set_breakpoint_location_function (struct bp_location *loc) | |
5026 | { | |
5027 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 | 5028 | || loc->owner->type == bp_hardware_breakpoint |
7a697b8d | 5029 | || tracepoint_type (loc->owner)) |
0d381245 VP |
5030 | { |
5031 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5032 | NULL, NULL); | |
5033 | if (loc->function_name) | |
5034 | loc->function_name = xstrdup (loc->function_name); | |
5035 | } | |
5036 | } | |
5037 | ||
a6d9a66e UW |
5038 | /* Attempt to determine architecture of location identified by SAL. */ |
5039 | static struct gdbarch * | |
5040 | get_sal_arch (struct symtab_and_line sal) | |
5041 | { | |
5042 | if (sal.section) | |
5043 | return get_objfile_arch (sal.section->objfile); | |
5044 | if (sal.symtab) | |
5045 | return get_objfile_arch (sal.symtab->objfile); | |
5046 | ||
5047 | return NULL; | |
5048 | } | |
5049 | ||
0d381245 VP |
5050 | /* set_raw_breakpoint is a low level routine for allocating and |
5051 | partially initializing a breakpoint of type BPTYPE. The newly | |
5052 | created breakpoint's address, section, source file name, and line | |
5053 | number are provided by SAL. The newly created and partially | |
5054 | initialized breakpoint is added to the breakpoint chain and | |
5055 | is also returned as the value of this function. | |
5056 | ||
5057 | It is expected that the caller will complete the initialization of | |
5058 | the newly created breakpoint struct as well as output any status | |
5059 | information regarding the creation of a new breakpoint. In | |
5060 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5061 | number! Care should be taken to not allow an error to occur | |
5062 | prior to completing the initialization of the breakpoint. If this | |
5063 | should happen, a bogus breakpoint will be left on the chain. */ | |
5064 | ||
63c252f8 | 5065 | struct breakpoint * |
a6d9a66e UW |
5066 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5067 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5068 | { |
a6d9a66e | 5069 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5070 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5071 | struct gdbarch *loc_gdbarch; |
5072 | ||
5073 | loc_gdbarch = get_sal_arch (sal); | |
5074 | if (!loc_gdbarch) | |
5075 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5076 | |
6c95b8df PA |
5077 | if (bptype != bp_catchpoint) |
5078 | gdb_assert (sal.pspace != NULL); | |
5079 | ||
0d381245 VP |
5080 | /* Adjust the breakpoint's address prior to allocating a location. |
5081 | Once we call allocate_bp_location(), that mostly uninitialized | |
5082 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5083 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5084 | not want its scan of the location chain to find a breakpoint and |
5085 | location that's only been partially initialized. */ | |
a6d9a66e | 5086 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5087 | |
39d61571 | 5088 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5089 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5090 | b->loc->requested_address = sal.pc; |
5091 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5092 | b->loc->pspace = sal.pspace; |
5093 | ||
5094 | /* Store the program space that was used to set the breakpoint, for | |
5095 | breakpoint resetting. */ | |
5096 | b->pspace = sal.pspace; | |
0d381245 VP |
5097 | |
5098 | if (sal.symtab == NULL) | |
5099 | b->source_file = NULL; | |
5100 | else | |
1b36a34b | 5101 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5102 | b->loc->section = sal.section; |
5103 | b->line_number = sal.line; | |
5104 | ||
5105 | set_breakpoint_location_function (b->loc); | |
c906108c | 5106 | |
c906108c SS |
5107 | breakpoints_changed (); |
5108 | ||
5109 | return b; | |
5110 | } | |
5111 | ||
c2c6d25f JM |
5112 | |
5113 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5114 | instruction, hard-wired into the inferior's code. */ | |
5115 | void | |
5116 | make_breakpoint_permanent (struct breakpoint *b) | |
5117 | { | |
0d381245 | 5118 | struct bp_location *bl; |
b5de0fa7 | 5119 | b->enable_state = bp_permanent; |
c2c6d25f | 5120 | |
0d381245 VP |
5121 | /* By definition, permanent breakpoints are already present in the code. |
5122 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5123 | is called in just one place, so it's hard to say if it's reasonable | |
5124 | to have permanent breakpoint with multiple locations or not, | |
5125 | but it's easy to implmement. */ | |
5126 | for (bl = b->loc; bl; bl = bl->next) | |
5127 | bl->inserted = 1; | |
c2c6d25f JM |
5128 | } |
5129 | ||
53a5351d | 5130 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5131 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5132 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5133 | ||
5134 | void | |
0fd8e87f | 5135 | set_longjmp_breakpoint (int thread) |
c906108c | 5136 | { |
0fd8e87f UW |
5137 | struct breakpoint *b, *temp; |
5138 | ||
5139 | /* To avoid having to rescan all objfile symbols at every step, | |
5140 | we maintain a list of continually-inserted but always disabled | |
5141 | longjmp "master" breakpoints. Here, we simply create momentary | |
5142 | clones of those and enable them for the requested thread. */ | |
5143 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5144 | if (b->pspace == current_program_space |
5145 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5146 | { |
5147 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5148 | clone->type = bp_longjmp; | |
5149 | clone->thread = thread; | |
5150 | } | |
c906108c SS |
5151 | } |
5152 | ||
611c83ae | 5153 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5154 | void |
611c83ae | 5155 | delete_longjmp_breakpoint (int thread) |
c906108c | 5156 | { |
611c83ae | 5157 | struct breakpoint *b, *temp; |
c906108c | 5158 | |
611c83ae PA |
5159 | ALL_BREAKPOINTS_SAFE (b, temp) |
5160 | if (b->type == bp_longjmp) | |
5161 | { | |
5162 | if (b->thread == thread) | |
5163 | delete_breakpoint (b); | |
5164 | } | |
c906108c SS |
5165 | } |
5166 | ||
1900040c MS |
5167 | void |
5168 | enable_overlay_breakpoints (void) | |
5169 | { | |
52f0bd74 | 5170 | struct breakpoint *b; |
1900040c MS |
5171 | |
5172 | ALL_BREAKPOINTS (b) | |
5173 | if (b->type == bp_overlay_event) | |
5174 | { | |
5175 | b->enable_state = bp_enabled; | |
b60e7edf | 5176 | update_global_location_list (1); |
c02f5703 | 5177 | overlay_events_enabled = 1; |
1900040c MS |
5178 | } |
5179 | } | |
5180 | ||
5181 | void | |
5182 | disable_overlay_breakpoints (void) | |
5183 | { | |
52f0bd74 | 5184 | struct breakpoint *b; |
1900040c MS |
5185 | |
5186 | ALL_BREAKPOINTS (b) | |
5187 | if (b->type == bp_overlay_event) | |
5188 | { | |
5189 | b->enable_state = bp_disabled; | |
b60e7edf | 5190 | update_global_location_list (0); |
c02f5703 | 5191 | overlay_events_enabled = 0; |
1900040c MS |
5192 | } |
5193 | } | |
5194 | ||
c4093a6a | 5195 | struct breakpoint * |
a6d9a66e | 5196 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5197 | { |
5198 | struct breakpoint *b; | |
c4093a6a | 5199 | |
a6d9a66e | 5200 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5201 | |
b5de0fa7 | 5202 | b->enable_state = bp_enabled; |
c4093a6a | 5203 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5204 | b->addr_string |
5205 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5206 | |
b60e7edf | 5207 | update_global_location_list_nothrow (1); |
74960c60 | 5208 | |
c4093a6a JM |
5209 | return b; |
5210 | } | |
5211 | ||
5212 | void | |
5213 | remove_thread_event_breakpoints (void) | |
5214 | { | |
5215 | struct breakpoint *b, *temp; | |
5216 | ||
5217 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5218 | if (b->type == bp_thread_event |
5219 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5220 | delete_breakpoint (b); |
5221 | } | |
5222 | ||
0101ce28 JJ |
5223 | struct captured_parse_breakpoint_args |
5224 | { | |
5225 | char **arg_p; | |
5226 | struct symtabs_and_lines *sals_p; | |
5227 | char ***addr_string_p; | |
5228 | int *not_found_ptr; | |
5229 | }; | |
5230 | ||
5231 | struct lang_and_radix | |
5232 | { | |
5233 | enum language lang; | |
5234 | int radix; | |
5235 | }; | |
5236 | ||
4efc6507 DE |
5237 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5238 | ||
5239 | struct breakpoint * | |
5240 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5241 | { | |
5242 | struct breakpoint *b; | |
5243 | ||
5244 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5245 | update_global_location_list_nothrow (1); | |
5246 | return b; | |
5247 | } | |
0101ce28 | 5248 | |
cae688ec JJ |
5249 | void |
5250 | remove_solib_event_breakpoints (void) | |
5251 | { | |
5252 | struct breakpoint *b, *temp; | |
5253 | ||
5254 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5255 | if (b->type == bp_shlib_event |
5256 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5257 | delete_breakpoint (b); |
5258 | } | |
5259 | ||
5260 | struct breakpoint * | |
a6d9a66e | 5261 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5262 | { |
5263 | struct breakpoint *b; | |
5264 | ||
a6d9a66e | 5265 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5266 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5267 | return b; |
5268 | } | |
5269 | ||
5270 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5271 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5272 | ||
5273 | void | |
cb851954 | 5274 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5275 | { |
876fa593 | 5276 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5277 | |
876fa593 | 5278 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5279 | { |
0d381245 VP |
5280 | struct breakpoint *b = loc->owner; |
5281 | /* We apply the check to all breakpoints, including disabled | |
5282 | for those with loc->duplicate set. This is so that when breakpoint | |
5283 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5284 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5285 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
5286 | if (((b->type == bp_breakpoint) |
5287 | || (b->type == bp_hardware_breakpoint) | |
7a697b8d | 5288 | || (tracepoint_type (b))) |
6c95b8df | 5289 | && loc->pspace == current_program_space |
0d381245 | 5290 | && !loc->shlib_disabled |
a77053c2 | 5291 | #ifdef PC_SOLIB |
0d381245 | 5292 | && PC_SOLIB (loc->address) |
a77053c2 | 5293 | #else |
6c95b8df | 5294 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5295 | #endif |
5296 | ) | |
0d381245 VP |
5297 | { |
5298 | loc->shlib_disabled = 1; | |
5299 | } | |
cae688ec JJ |
5300 | } |
5301 | } | |
5302 | ||
84acb35a JJ |
5303 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5304 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5305 | ||
75149521 | 5306 | static void |
84acb35a JJ |
5307 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5308 | { | |
876fa593 | 5309 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5310 | int disabled_shlib_breaks = 0; |
5311 | ||
c86cf029 VP |
5312 | /* SunOS a.out shared libraries are always mapped, so do not |
5313 | disable breakpoints; they will only be reported as unloaded | |
5314 | through clear_solib when GDB discards its shared library | |
5315 | list. See clear_solib for more information. */ | |
5316 | if (exec_bfd != NULL | |
5317 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5318 | return; | |
5319 | ||
876fa593 | 5320 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5321 | { |
0d381245 VP |
5322 | struct breakpoint *b = loc->owner; |
5323 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
5324 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5325 | && solib->pspace == loc->pspace |
e2dd7057 PP |
5326 | && !loc->shlib_disabled |
5327 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
5328 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 5329 | { |
e2dd7057 PP |
5330 | loc->shlib_disabled = 1; |
5331 | /* At this point, we cannot rely on remove_breakpoint | |
5332 | succeeding so we must mark the breakpoint as not inserted | |
5333 | to prevent future errors occurring in remove_breakpoints. */ | |
5334 | loc->inserted = 0; | |
5335 | if (!disabled_shlib_breaks) | |
5336 | { | |
5337 | target_terminal_ours_for_output (); | |
5338 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5339 | solib->so_name); | |
84acb35a | 5340 | } |
e2dd7057 | 5341 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5342 | } |
5343 | } | |
84acb35a JJ |
5344 | } |
5345 | ||
ce78b96d JB |
5346 | /* FORK & VFORK catchpoints. */ |
5347 | ||
5348 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5349 | ||
c906108c | 5350 | static void |
ce78b96d JB |
5351 | insert_catch_fork (struct breakpoint *b) |
5352 | { | |
5353 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5354 | } | |
5355 | ||
5356 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5357 | ||
5358 | static int | |
5359 | remove_catch_fork (struct breakpoint *b) | |
5360 | { | |
5361 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5362 | } | |
5363 | ||
5364 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5365 | catchpoints. */ | |
5366 | ||
5367 | static int | |
5368 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5369 | { | |
5370 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5371 | } | |
5372 | ||
5373 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5374 | ||
5375 | static enum print_stop_action | |
5376 | print_it_catch_fork (struct breakpoint *b) | |
5377 | { | |
5378 | annotate_catchpoint (b->number); | |
5379 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5380 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5381 | return PRINT_SRC_AND_LOC; | |
5382 | } | |
5383 | ||
5384 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5385 | ||
5386 | static void | |
a6d9a66e | 5387 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5388 | { |
79a45b7d TT |
5389 | struct value_print_options opts; |
5390 | ||
5391 | get_user_print_options (&opts); | |
5392 | ||
ce78b96d JB |
5393 | /* Field 4, the address, is omitted (which makes the columns |
5394 | not line up too nicely with the headers, but the effect | |
5395 | is relatively readable). */ | |
79a45b7d | 5396 | if (opts.addressprint) |
ce78b96d JB |
5397 | ui_out_field_skip (uiout, "addr"); |
5398 | annotate_field (5); | |
5399 | ui_out_text (uiout, "fork"); | |
5400 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5401 | { | |
5402 | ui_out_text (uiout, ", process "); | |
5403 | ui_out_field_int (uiout, "what", | |
5404 | ptid_get_pid (b->forked_inferior_pid)); | |
5405 | ui_out_spaces (uiout, 1); | |
5406 | } | |
5407 | } | |
5408 | ||
5409 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5410 | catchpoints. */ | |
5411 | ||
5412 | static void | |
5413 | print_mention_catch_fork (struct breakpoint *b) | |
5414 | { | |
5415 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5416 | } | |
5417 | ||
5418 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
5419 | ||
5420 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5421 | { | |
5422 | insert_catch_fork, | |
5423 | remove_catch_fork, | |
5424 | breakpoint_hit_catch_fork, | |
5425 | print_it_catch_fork, | |
5426 | print_one_catch_fork, | |
5427 | print_mention_catch_fork | |
5428 | }; | |
5429 | ||
5430 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5431 | ||
5432 | static void | |
5433 | insert_catch_vfork (struct breakpoint *b) | |
5434 | { | |
5435 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5436 | } | |
5437 | ||
5438 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5439 | ||
5440 | static int | |
5441 | remove_catch_vfork (struct breakpoint *b) | |
5442 | { | |
5443 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5444 | } | |
5445 | ||
5446 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5447 | catchpoints. */ | |
5448 | ||
5449 | static int | |
5450 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5451 | { | |
5452 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5453 | } | |
5454 | ||
5455 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5456 | ||
5457 | static enum print_stop_action | |
5458 | print_it_catch_vfork (struct breakpoint *b) | |
5459 | { | |
5460 | annotate_catchpoint (b->number); | |
5461 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5462 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5463 | return PRINT_SRC_AND_LOC; | |
5464 | } | |
5465 | ||
5466 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5467 | ||
5468 | static void | |
a6d9a66e | 5469 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5470 | { |
79a45b7d TT |
5471 | struct value_print_options opts; |
5472 | ||
5473 | get_user_print_options (&opts); | |
ce78b96d JB |
5474 | /* Field 4, the address, is omitted (which makes the columns |
5475 | not line up too nicely with the headers, but the effect | |
5476 | is relatively readable). */ | |
79a45b7d | 5477 | if (opts.addressprint) |
ce78b96d JB |
5478 | ui_out_field_skip (uiout, "addr"); |
5479 | annotate_field (5); | |
5480 | ui_out_text (uiout, "vfork"); | |
5481 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5482 | { | |
5483 | ui_out_text (uiout, ", process "); | |
5484 | ui_out_field_int (uiout, "what", | |
5485 | ptid_get_pid (b->forked_inferior_pid)); | |
5486 | ui_out_spaces (uiout, 1); | |
5487 | } | |
5488 | } | |
5489 | ||
5490 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
5491 | catchpoints. */ | |
5492 | ||
5493 | static void | |
5494 | print_mention_catch_vfork (struct breakpoint *b) | |
5495 | { | |
5496 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
5497 | } | |
5498 | ||
5499 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
5500 | ||
5501 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
5502 | { | |
5503 | insert_catch_vfork, | |
5504 | remove_catch_vfork, | |
5505 | breakpoint_hit_catch_vfork, | |
5506 | print_it_catch_vfork, | |
5507 | print_one_catch_vfork, | |
5508 | print_mention_catch_vfork | |
5509 | }; | |
5510 | ||
a96d9b2e SDJ |
5511 | /* Implement the "insert" breakpoint_ops method for syscall |
5512 | catchpoints. */ | |
5513 | ||
5514 | static void | |
5515 | insert_catch_syscall (struct breakpoint *b) | |
5516 | { | |
5517 | struct inferior *inf = current_inferior (); | |
5518 | ||
5519 | ++inf->total_syscalls_count; | |
5520 | if (!b->syscalls_to_be_caught) | |
5521 | ++inf->any_syscall_count; | |
5522 | else | |
5523 | { | |
5524 | int i, iter; | |
5525 | for (i = 0; | |
5526 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5527 | i++) | |
5528 | { | |
5529 | int elem; | |
5530 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5531 | { | |
5532 | int old_size = VEC_length (int, inf->syscalls_counts); | |
5533 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
5534 | uintptr_t vec_addr; | |
5535 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
5536 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
5537 | vec_addr_offset; | |
5538 | memset ((void *) vec_addr, 0, | |
5539 | (iter + 1 - old_size) * sizeof (int)); | |
5540 | } | |
5541 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5542 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
5543 | } | |
5544 | } | |
5545 | ||
5546 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5547 | inf->total_syscalls_count != 0, | |
5548 | inf->any_syscall_count, | |
5549 | VEC_length (int, inf->syscalls_counts), | |
5550 | VEC_address (int, inf->syscalls_counts)); | |
5551 | } | |
5552 | ||
5553 | /* Implement the "remove" breakpoint_ops method for syscall | |
5554 | catchpoints. */ | |
5555 | ||
5556 | static int | |
5557 | remove_catch_syscall (struct breakpoint *b) | |
5558 | { | |
5559 | struct inferior *inf = current_inferior (); | |
5560 | ||
5561 | --inf->total_syscalls_count; | |
5562 | if (!b->syscalls_to_be_caught) | |
5563 | --inf->any_syscall_count; | |
5564 | else | |
5565 | { | |
5566 | int i, iter; | |
5567 | for (i = 0; | |
5568 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5569 | i++) | |
5570 | { | |
5571 | int elem; | |
5572 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5573 | /* Shouldn't happen. */ | |
5574 | continue; | |
5575 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5576 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
5577 | } | |
5578 | } | |
5579 | ||
5580 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5581 | inf->total_syscalls_count != 0, | |
5582 | inf->any_syscall_count, | |
5583 | VEC_length (int, inf->syscalls_counts), | |
5584 | VEC_address (int, inf->syscalls_counts)); | |
5585 | } | |
5586 | ||
5587 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
5588 | catchpoints. */ | |
5589 | ||
5590 | static int | |
5591 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
5592 | { | |
5593 | /* We must check if we are catching specific syscalls in this breakpoint. | |
5594 | If we are, then we must guarantee that the called syscall is the same | |
5595 | syscall we are catching. */ | |
5596 | int syscall_number = 0; | |
5597 | ||
5598 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
5599 | return 0; | |
5600 | ||
5601 | /* Now, checking if the syscall is the same. */ | |
5602 | if (b->syscalls_to_be_caught) | |
5603 | { | |
5604 | int i, iter; | |
5605 | for (i = 0; | |
5606 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5607 | i++) | |
5608 | if (syscall_number == iter) | |
5609 | break; | |
5610 | /* Not the same. */ | |
5611 | if (!iter) | |
5612 | return 0; | |
5613 | } | |
5614 | ||
5615 | return 1; | |
5616 | } | |
5617 | ||
5618 | /* Implement the "print_it" breakpoint_ops method for syscall | |
5619 | catchpoints. */ | |
5620 | ||
5621 | static enum print_stop_action | |
5622 | print_it_catch_syscall (struct breakpoint *b) | |
5623 | { | |
5624 | /* These are needed because we want to know in which state a | |
5625 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
5626 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
5627 | must print "called syscall" or "returned from syscall". */ | |
5628 | ptid_t ptid; | |
5629 | struct target_waitstatus last; | |
5630 | struct syscall s; | |
5631 | struct cleanup *old_chain; | |
5632 | char *syscall_id; | |
5633 | ||
5634 | get_last_target_status (&ptid, &last); | |
5635 | ||
5636 | get_syscall_by_number (last.value.syscall_number, &s); | |
5637 | ||
5638 | annotate_catchpoint (b->number); | |
5639 | ||
5640 | if (s.name == NULL) | |
5641 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
5642 | else | |
5643 | syscall_id = xstrprintf ("'%s'", s.name); | |
5644 | ||
5645 | old_chain = make_cleanup (xfree, syscall_id); | |
5646 | ||
5647 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
5648 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
5649 | b->number, syscall_id); | |
5650 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
5651 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
5652 | b->number, syscall_id); | |
5653 | ||
5654 | do_cleanups (old_chain); | |
5655 | ||
5656 | return PRINT_SRC_AND_LOC; | |
5657 | } | |
5658 | ||
5659 | /* Implement the "print_one" breakpoint_ops method for syscall | |
5660 | catchpoints. */ | |
5661 | ||
5662 | static void | |
5663 | print_one_catch_syscall (struct breakpoint *b, | |
5664 | struct bp_location **last_loc) | |
5665 | { | |
5666 | struct value_print_options opts; | |
5667 | ||
5668 | get_user_print_options (&opts); | |
5669 | /* Field 4, the address, is omitted (which makes the columns | |
5670 | not line up too nicely with the headers, but the effect | |
5671 | is relatively readable). */ | |
5672 | if (opts.addressprint) | |
5673 | ui_out_field_skip (uiout, "addr"); | |
5674 | annotate_field (5); | |
5675 | ||
5676 | if (b->syscalls_to_be_caught | |
5677 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
5678 | ui_out_text (uiout, "syscalls \""); | |
5679 | else | |
5680 | ui_out_text (uiout, "syscall \""); | |
5681 | ||
5682 | if (b->syscalls_to_be_caught) | |
5683 | { | |
5684 | int i, iter; | |
5685 | char *text = xstrprintf ("%s", ""); | |
5686 | for (i = 0; | |
5687 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5688 | i++) | |
5689 | { | |
5690 | char *x = text; | |
5691 | struct syscall s; | |
5692 | get_syscall_by_number (iter, &s); | |
5693 | ||
5694 | if (s.name != NULL) | |
5695 | text = xstrprintf ("%s%s, ", text, s.name); | |
5696 | else | |
5697 | text = xstrprintf ("%s%d, ", text, iter); | |
5698 | ||
5699 | /* We have to xfree the last 'text' (now stored at 'x') | |
5700 | because xstrprintf dinamically allocates new space for it | |
5701 | on every call. */ | |
5702 | xfree (x); | |
5703 | } | |
5704 | /* Remove the last comma. */ | |
5705 | text[strlen (text) - 2] = '\0'; | |
5706 | ui_out_field_string (uiout, "what", text); | |
5707 | } | |
5708 | else | |
5709 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
5710 | ui_out_text (uiout, "\" "); | |
5711 | } | |
5712 | ||
5713 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
5714 | catchpoints. */ | |
5715 | ||
5716 | static void | |
5717 | print_mention_catch_syscall (struct breakpoint *b) | |
5718 | { | |
5719 | if (b->syscalls_to_be_caught) | |
5720 | { | |
5721 | int i, iter; | |
5722 | ||
5723 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
5724 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
5725 | else | |
5726 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
5727 | ||
5728 | for (i = 0; | |
5729 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5730 | i++) | |
5731 | { | |
5732 | struct syscall s; | |
5733 | get_syscall_by_number (iter, &s); | |
5734 | ||
5735 | if (s.name) | |
5736 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
5737 | else | |
5738 | printf_filtered (" %d", s.number); | |
5739 | } | |
5740 | printf_filtered (")"); | |
5741 | } | |
5742 | else | |
5743 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
5744 | b->number); | |
5745 | } | |
5746 | ||
5747 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ | |
5748 | ||
5749 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
5750 | { | |
5751 | insert_catch_syscall, | |
5752 | remove_catch_syscall, | |
5753 | breakpoint_hit_catch_syscall, | |
5754 | print_it_catch_syscall, | |
5755 | print_one_catch_syscall, | |
5756 | print_mention_catch_syscall | |
5757 | }; | |
5758 | ||
5759 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
5760 | ||
5761 | static int | |
5762 | syscall_catchpoint_p (struct breakpoint *b) | |
5763 | { | |
5764 | return (b->ops == &catch_syscall_breakpoint_ops); | |
5765 | } | |
5766 | ||
5767 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
5768 | but does NOT mention it nor update the global location list. | |
5769 | This is useful if you need to fill more fields in the | |
5770 | struct breakpoint before calling mention. | |
ce78b96d JB |
5771 | |
5772 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
5773 | If COND_STRING is not NULL, then store it in the breakpoint. | |
5774 | OPS, if not NULL, is the breakpoint_ops structure associated | |
5775 | to the catchpoint. */ | |
5776 | ||
5777 | static struct breakpoint * | |
a96d9b2e SDJ |
5778 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
5779 | char *cond_string, | |
5780 | struct breakpoint_ops *ops) | |
c906108c | 5781 | { |
c5aa993b JM |
5782 | struct symtab_and_line sal; |
5783 | struct breakpoint *b; | |
c5aa993b | 5784 | |
fe39c653 | 5785 | init_sal (&sal); |
6c95b8df | 5786 | sal.pspace = current_program_space; |
c5aa993b | 5787 | |
a6d9a66e | 5788 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
5789 | set_breakpoint_count (breakpoint_count + 1); |
5790 | b->number = breakpoint_count; | |
ce78b96d | 5791 | |
1b36a34b | 5792 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 5793 | b->thread = -1; |
c906108c | 5794 | b->addr_string = NULL; |
b5de0fa7 EZ |
5795 | b->enable_state = bp_enabled; |
5796 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 5797 | b->ops = ops; |
c5aa993b | 5798 | |
a96d9b2e SDJ |
5799 | return b; |
5800 | } | |
5801 | ||
5802 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
5803 | ||
5804 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
5805 | If COND_STRING is not NULL, then store it in the breakpoint. | |
5806 | OPS, if not NULL, is the breakpoint_ops structure associated | |
5807 | to the catchpoint. */ | |
5808 | ||
5809 | static struct breakpoint * | |
5810 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
5811 | char *cond_string, struct breakpoint_ops *ops) | |
5812 | { | |
5813 | struct breakpoint *b = | |
5814 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
5815 | ||
c906108c | 5816 | mention (b); |
ce78b96d | 5817 | update_global_location_list (1); |
c906108c | 5818 | |
ce78b96d | 5819 | return b; |
c906108c | 5820 | } |
c5aa993b | 5821 | |
9b70b993 | 5822 | static void |
a6d9a66e UW |
5823 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
5824 | int tempflag, char *cond_string, | |
ce78b96d | 5825 | struct breakpoint_ops *ops) |
c906108c | 5826 | { |
a6d9a66e UW |
5827 | struct breakpoint *b |
5828 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
5829 | |
5830 | /* FIXME: We should put this information in a breakpoint private data | |
5831 | area. */ | |
5832 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
5833 | } |
5834 | ||
fe798b75 JB |
5835 | /* Exec catchpoints. */ |
5836 | ||
9b70b993 | 5837 | static void |
fe798b75 | 5838 | insert_catch_exec (struct breakpoint *b) |
c906108c | 5839 | { |
fe798b75 JB |
5840 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
5841 | } | |
c906108c | 5842 | |
fe798b75 JB |
5843 | static int |
5844 | remove_catch_exec (struct breakpoint *b) | |
5845 | { | |
5846 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
5847 | } | |
c906108c | 5848 | |
fe798b75 JB |
5849 | static int |
5850 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
5851 | { | |
5852 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
5853 | } | |
c906108c | 5854 | |
fe798b75 JB |
5855 | static enum print_stop_action |
5856 | print_it_catch_exec (struct breakpoint *b) | |
5857 | { | |
5858 | annotate_catchpoint (b->number); | |
5859 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
5860 | b->exec_pathname); | |
5861 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
5862 | } |
5863 | ||
fe798b75 | 5864 | static void |
a6d9a66e | 5865 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
5866 | { |
5867 | struct value_print_options opts; | |
5868 | ||
5869 | get_user_print_options (&opts); | |
5870 | ||
5871 | /* Field 4, the address, is omitted (which makes the columns | |
5872 | not line up too nicely with the headers, but the effect | |
5873 | is relatively readable). */ | |
5874 | if (opts.addressprint) | |
5875 | ui_out_field_skip (uiout, "addr"); | |
5876 | annotate_field (5); | |
5877 | ui_out_text (uiout, "exec"); | |
5878 | if (b->exec_pathname != NULL) | |
5879 | { | |
5880 | ui_out_text (uiout, ", program \""); | |
5881 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
5882 | ui_out_text (uiout, "\" "); | |
5883 | } | |
5884 | } | |
5885 | ||
5886 | static void | |
5887 | print_mention_catch_exec (struct breakpoint *b) | |
5888 | { | |
5889 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
5890 | } | |
5891 | ||
5892 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
5893 | { | |
5894 | insert_catch_exec, | |
5895 | remove_catch_exec, | |
5896 | breakpoint_hit_catch_exec, | |
5897 | print_it_catch_exec, | |
5898 | print_one_catch_exec, | |
5899 | print_mention_catch_exec | |
5900 | }; | |
5901 | ||
a96d9b2e SDJ |
5902 | static void |
5903 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
5904 | struct breakpoint_ops *ops) | |
5905 | { | |
5906 | struct gdbarch *gdbarch = get_current_arch (); | |
5907 | struct breakpoint *b = | |
5908 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
5909 | ||
5910 | b->syscalls_to_be_caught = filter; | |
5911 | ||
5912 | /* Now, we have to mention the breakpoint and update the global | |
5913 | location list. */ | |
5914 | mention (b); | |
5915 | update_global_location_list (1); | |
5916 | } | |
5917 | ||
c906108c | 5918 | static int |
fba45db2 | 5919 | hw_breakpoint_used_count (void) |
c906108c | 5920 | { |
52f0bd74 | 5921 | struct breakpoint *b; |
c906108c SS |
5922 | int i = 0; |
5923 | ||
5924 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5925 | { |
d6b74ac4 | 5926 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
5927 | i++; |
5928 | } | |
c906108c SS |
5929 | |
5930 | return i; | |
5931 | } | |
5932 | ||
5933 | static int | |
fba45db2 | 5934 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 5935 | { |
52f0bd74 | 5936 | struct breakpoint *b; |
c906108c SS |
5937 | int i = 0; |
5938 | ||
5939 | *other_type_used = 0; | |
5940 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5941 | { |
468d015d | 5942 | if (breakpoint_enabled (b)) |
c5aa993b JM |
5943 | { |
5944 | if (b->type == type) | |
5945 | i++; | |
059fb39f PM |
5946 | else if ((b->type == bp_hardware_watchpoint |
5947 | || b->type == bp_read_watchpoint | |
5948 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
5949 | *other_type_used = 1; |
5950 | } | |
5951 | } | |
c906108c SS |
5952 | return i; |
5953 | } | |
5954 | ||
c906108c | 5955 | void |
fba45db2 | 5956 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 5957 | { |
c5aa993b | 5958 | struct breakpoint *b; |
c906108c SS |
5959 | |
5960 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5961 | { |
5962 | if (((b->type == bp_watchpoint) | |
5963 | || (b->type == bp_hardware_watchpoint) | |
5964 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5965 | || (b->type == bp_access_watchpoint)) |
468d015d | 5966 | && breakpoint_enabled (b)) |
c5aa993b | 5967 | { |
b5de0fa7 | 5968 | b->enable_state = bp_call_disabled; |
b60e7edf | 5969 | update_global_location_list (0); |
c5aa993b JM |
5970 | } |
5971 | } | |
c906108c SS |
5972 | } |
5973 | ||
5974 | void | |
fba45db2 | 5975 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 5976 | { |
c5aa993b | 5977 | struct breakpoint *b; |
c906108c SS |
5978 | |
5979 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5980 | { |
5981 | if (((b->type == bp_watchpoint) | |
5982 | || (b->type == bp_hardware_watchpoint) | |
5983 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5984 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5985 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5986 | { |
b5de0fa7 | 5987 | b->enable_state = bp_enabled; |
b60e7edf | 5988 | update_global_location_list (1); |
c5aa993b JM |
5989 | } |
5990 | } | |
c906108c SS |
5991 | } |
5992 | ||
8bea4e01 UW |
5993 | void |
5994 | disable_breakpoints_before_startup (void) | |
5995 | { | |
5996 | struct breakpoint *b; | |
5997 | int found = 0; | |
5998 | ||
5999 | ALL_BREAKPOINTS (b) | |
6000 | { | |
6c95b8df PA |
6001 | if (b->pspace != current_program_space) |
6002 | continue; | |
6003 | ||
8bea4e01 UW |
6004 | if ((b->type == bp_breakpoint |
6005 | || b->type == bp_hardware_breakpoint) | |
6006 | && breakpoint_enabled (b)) | |
6007 | { | |
6008 | b->enable_state = bp_startup_disabled; | |
6009 | found = 1; | |
6010 | } | |
6011 | } | |
6012 | ||
6013 | if (found) | |
6014 | update_global_location_list (0); | |
6015 | ||
6c95b8df | 6016 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6017 | } |
6018 | ||
6019 | void | |
6020 | enable_breakpoints_after_startup (void) | |
6021 | { | |
6022 | struct breakpoint *b; | |
6023 | int found = 0; | |
6024 | ||
6c95b8df | 6025 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6026 | |
6027 | ALL_BREAKPOINTS (b) | |
6028 | { | |
6c95b8df PA |
6029 | if (b->pspace != current_program_space) |
6030 | continue; | |
6031 | ||
8bea4e01 UW |
6032 | if ((b->type == bp_breakpoint |
6033 | || b->type == bp_hardware_breakpoint) | |
6034 | && b->enable_state == bp_startup_disabled) | |
6035 | { | |
6036 | b->enable_state = bp_enabled; | |
6037 | found = 1; | |
6038 | } | |
6039 | } | |
6040 | ||
6041 | if (found) | |
6042 | breakpoint_re_set (); | |
6043 | } | |
6044 | ||
c906108c SS |
6045 | |
6046 | /* Set a breakpoint that will evaporate an end of command | |
6047 | at address specified by SAL. | |
6048 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6049 | ||
6050 | struct breakpoint * | |
a6d9a66e UW |
6051 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6052 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6053 | { |
52f0bd74 | 6054 | struct breakpoint *b; |
edb3359d DJ |
6055 | |
6056 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6057 | one. */ | |
6058 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6059 | ||
a6d9a66e | 6060 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6061 | b->enable_state = bp_enabled; |
6062 | b->disposition = disp_donttouch; | |
818dd999 | 6063 | b->frame_id = frame_id; |
c906108c SS |
6064 | |
6065 | /* If we're debugging a multi-threaded program, then we | |
6066 | want momentary breakpoints to be active in only a | |
6067 | single thread of control. */ | |
39f77062 KB |
6068 | if (in_thread_list (inferior_ptid)) |
6069 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6070 | |
b60e7edf | 6071 | update_global_location_list_nothrow (1); |
74960c60 | 6072 | |
c906108c SS |
6073 | return b; |
6074 | } | |
611c83ae | 6075 | |
e58b0e63 PA |
6076 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6077 | ORIG is NULL. */ | |
6078 | ||
6079 | struct breakpoint * | |
6080 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6081 | { | |
6082 | struct breakpoint *copy; | |
6083 | ||
6084 | /* If there's nothing to clone, then return nothing. */ | |
6085 | if (orig == NULL) | |
6086 | return NULL; | |
6087 | ||
a6d9a66e | 6088 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6089 | copy->loc = allocate_bp_location (copy); |
6090 | set_breakpoint_location_function (copy->loc); | |
6091 | ||
a6d9a66e | 6092 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6093 | copy->loc->requested_address = orig->loc->requested_address; |
6094 | copy->loc->address = orig->loc->address; | |
6095 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6096 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6097 | |
6098 | if (orig->source_file == NULL) | |
6099 | copy->source_file = NULL; | |
6100 | else | |
6101 | copy->source_file = xstrdup (orig->source_file); | |
6102 | ||
6103 | copy->line_number = orig->line_number; | |
6104 | copy->frame_id = orig->frame_id; | |
6105 | copy->thread = orig->thread; | |
6c95b8df | 6106 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6107 | |
6108 | copy->enable_state = bp_enabled; | |
6109 | copy->disposition = disp_donttouch; | |
6110 | copy->number = internal_breakpoint_number--; | |
6111 | ||
6112 | update_global_location_list_nothrow (0); | |
6113 | return copy; | |
6114 | } | |
6115 | ||
611c83ae | 6116 | struct breakpoint * |
a6d9a66e UW |
6117 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6118 | enum bptype type) | |
611c83ae PA |
6119 | { |
6120 | struct symtab_and_line sal; | |
6121 | ||
6122 | sal = find_pc_line (pc, 0); | |
6123 | sal.pc = pc; | |
6124 | sal.section = find_pc_overlay (pc); | |
6125 | sal.explicit_pc = 1; | |
6126 | ||
a6d9a66e | 6127 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6128 | } |
c906108c | 6129 | \f |
c5aa993b | 6130 | |
c906108c SS |
6131 | /* Tell the user we have just set a breakpoint B. */ |
6132 | ||
6133 | static void | |
fba45db2 | 6134 | mention (struct breakpoint *b) |
c906108c SS |
6135 | { |
6136 | int say_where = 0; | |
fa8a61dc | 6137 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6138 | struct value_print_options opts; |
6139 | ||
6140 | get_user_print_options (&opts); | |
8b93c638 | 6141 | |
9a4105ab AC |
6142 | /* FIXME: This is misplaced; mention() is called by things (like |
6143 | hitting a watchpoint) other than breakpoint creation. It should | |
6144 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6145 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6146 | observer_notify_breakpoint_created (b->number); |
c906108c | 6147 | |
3086aeae DJ |
6148 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6149 | b->ops->print_mention (b); | |
6150 | else | |
6151 | switch (b->type) | |
6152 | { | |
6153 | case bp_none: | |
a3f17187 | 6154 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6155 | break; |
6156 | case bp_watchpoint: | |
6157 | ui_out_text (uiout, "Watchpoint "); | |
6158 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6159 | ui_out_field_int (uiout, "number", b->number); | |
6160 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6161 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6162 | do_cleanups (ui_out_chain); |
6163 | break; | |
6164 | case bp_hardware_watchpoint: | |
6165 | ui_out_text (uiout, "Hardware watchpoint "); | |
6166 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6167 | ui_out_field_int (uiout, "number", b->number); | |
6168 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6169 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6170 | do_cleanups (ui_out_chain); |
6171 | break; | |
6172 | case bp_read_watchpoint: | |
6173 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6174 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6175 | ui_out_field_int (uiout, "number", b->number); | |
6176 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6177 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6178 | do_cleanups (ui_out_chain); |
6179 | break; | |
6180 | case bp_access_watchpoint: | |
6181 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6182 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6183 | ui_out_field_int (uiout, "number", b->number); | |
6184 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6185 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6186 | do_cleanups (ui_out_chain); |
6187 | break; | |
6188 | case bp_breakpoint: | |
6189 | if (ui_out_is_mi_like_p (uiout)) | |
6190 | { | |
6191 | say_where = 0; | |
6192 | break; | |
6193 | } | |
2cec12e5 AR |
6194 | if (b->disposition == disp_del) |
6195 | printf_filtered (_("Temporary breakpoint")); | |
6196 | else | |
6197 | printf_filtered (_("Breakpoint")); | |
6198 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6199 | say_where = 1; |
6200 | break; | |
6201 | case bp_hardware_breakpoint: | |
6202 | if (ui_out_is_mi_like_p (uiout)) | |
6203 | { | |
6204 | say_where = 0; | |
6205 | break; | |
6206 | } | |
a3f17187 | 6207 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6208 | say_where = 1; |
6209 | break; | |
1042e4c0 SS |
6210 | case bp_tracepoint: |
6211 | if (ui_out_is_mi_like_p (uiout)) | |
6212 | { | |
6213 | say_where = 0; | |
6214 | break; | |
6215 | } | |
6216 | printf_filtered (_("Tracepoint")); | |
6217 | printf_filtered (_(" %d"), b->number); | |
6218 | say_where = 1; | |
6219 | break; | |
7a697b8d SS |
6220 | case bp_fast_tracepoint: |
6221 | if (ui_out_is_mi_like_p (uiout)) | |
6222 | { | |
6223 | say_where = 0; | |
6224 | break; | |
6225 | } | |
6226 | printf_filtered (_("Fast tracepoint")); | |
6227 | printf_filtered (_(" %d"), b->number); | |
6228 | say_where = 1; | |
6229 | break; | |
3086aeae DJ |
6230 | |
6231 | case bp_until: | |
6232 | case bp_finish: | |
6233 | case bp_longjmp: | |
6234 | case bp_longjmp_resume: | |
6235 | case bp_step_resume: | |
3086aeae DJ |
6236 | case bp_call_dummy: |
6237 | case bp_watchpoint_scope: | |
6238 | case bp_shlib_event: | |
6239 | case bp_thread_event: | |
6240 | case bp_overlay_event: | |
4efc6507 | 6241 | case bp_jit_event: |
0fd8e87f | 6242 | case bp_longjmp_master: |
3086aeae DJ |
6243 | break; |
6244 | } | |
c906108c | 6245 | |
c906108c SS |
6246 | if (say_where) |
6247 | { | |
a3f17187 AC |
6248 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6249 | single string. */ | |
0d381245 | 6250 | if (b->loc == NULL) |
c906108c | 6251 | { |
a3f17187 | 6252 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6253 | } |
6254 | else | |
6255 | { | |
79a45b7d | 6256 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6257 | { |
6258 | printf_filtered (" at "); | |
5af949e3 UW |
6259 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6260 | gdb_stdout); | |
0101ce28 JJ |
6261 | } |
6262 | if (b->source_file) | |
6263 | printf_filtered (": file %s, line %d.", | |
6264 | b->source_file, b->line_number); | |
0d381245 VP |
6265 | |
6266 | if (b->loc->next) | |
6267 | { | |
6268 | struct bp_location *loc = b->loc; | |
6269 | int n = 0; | |
6270 | for (; loc; loc = loc->next) | |
6271 | ++n; | |
6272 | printf_filtered (" (%d locations)", n); | |
6273 | } | |
6274 | ||
c906108c | 6275 | } |
c906108c | 6276 | } |
9dc5e2a9 | 6277 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6278 | return; |
c906108c SS |
6279 | printf_filtered ("\n"); |
6280 | } | |
c906108c | 6281 | \f |
c5aa993b | 6282 | |
0d381245 | 6283 | static struct bp_location * |
39d61571 | 6284 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6285 | const struct symtab_and_line *sal) |
6286 | { | |
6287 | struct bp_location *loc, **tmp; | |
6288 | ||
39d61571 | 6289 | loc = allocate_bp_location (b); |
0d381245 VP |
6290 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6291 | ; | |
6292 | *tmp = loc; | |
a6d9a66e UW |
6293 | loc->gdbarch = get_sal_arch (*sal); |
6294 | if (!loc->gdbarch) | |
6295 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6296 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6297 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6298 | loc->requested_address, b->type); | |
6c95b8df PA |
6299 | loc->pspace = sal->pspace; |
6300 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6301 | loc->section = sal->section; |
6302 | ||
6303 | set_breakpoint_location_function (loc); | |
6304 | return loc; | |
6305 | } | |
514f746b AR |
6306 | \f |
6307 | ||
6308 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6309 | return 0 otherwise. */ | |
6310 | ||
6311 | static int | |
6312 | bp_loc_is_permanent (struct bp_location *loc) | |
6313 | { | |
6314 | int len; | |
6315 | CORE_ADDR addr; | |
6316 | const gdb_byte *brk; | |
6317 | gdb_byte *target_mem; | |
939c61fa JK |
6318 | struct cleanup *cleanup; |
6319 | int retval = 0; | |
514f746b AR |
6320 | |
6321 | gdb_assert (loc != NULL); | |
6322 | ||
6323 | addr = loc->address; | |
a6d9a66e | 6324 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6325 | |
939c61fa JK |
6326 | /* Software breakpoints unsupported? */ |
6327 | if (brk == NULL) | |
6328 | return 0; | |
6329 | ||
514f746b AR |
6330 | target_mem = alloca (len); |
6331 | ||
939c61fa JK |
6332 | /* Enable the automatic memory restoration from breakpoints while |
6333 | we read the memory. Otherwise we could say about our temporary | |
6334 | breakpoints they are permanent. */ | |
6c95b8df PA |
6335 | cleanup = save_current_space_and_thread (); |
6336 | ||
6337 | switch_to_program_space_and_thread (loc->pspace); | |
6338 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6339 | |
514f746b AR |
6340 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6341 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6342 | retval = 1; |
514f746b | 6343 | |
939c61fa JK |
6344 | do_cleanups (cleanup); |
6345 | ||
6346 | return retval; | |
514f746b AR |
6347 | } |
6348 | ||
6349 | ||
c3f6f71d | 6350 | |
018d34a4 VP |
6351 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6352 | as textual description of the location, and COND_STRING | |
db107f19 | 6353 | as condition expression. */ |
018d34a4 VP |
6354 | |
6355 | static void | |
a6d9a66e UW |
6356 | create_breakpoint (struct gdbarch *gdbarch, |
6357 | struct symtabs_and_lines sals, char *addr_string, | |
018d34a4 VP |
6358 | char *cond_string, |
6359 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 6360 | int thread, int task, int ignore_count, |
41447f92 | 6361 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 6362 | { |
0d381245 VP |
6363 | struct breakpoint *b = NULL; |
6364 | int i; | |
018d34a4 VP |
6365 | |
6366 | if (type == bp_hardware_breakpoint) | |
6367 | { | |
6368 | int i = hw_breakpoint_used_count (); | |
6369 | int target_resources_ok = | |
d92524f1 | 6370 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6371 | i + 1, 0); |
6372 | if (target_resources_ok == 0) | |
6373 | error (_("No hardware breakpoint support in the target.")); | |
6374 | else if (target_resources_ok < 0) | |
6375 | error (_("Hardware breakpoints used exceeds limit.")); | |
6376 | } | |
6377 | ||
6c95b8df PA |
6378 | gdb_assert (sals.nelts > 0); |
6379 | ||
0d381245 VP |
6380 | for (i = 0; i < sals.nelts; ++i) |
6381 | { | |
6382 | struct symtab_and_line sal = sals.sals[i]; | |
6383 | struct bp_location *loc; | |
6384 | ||
6385 | if (from_tty) | |
5af949e3 UW |
6386 | { |
6387 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6388 | if (!loc_gdbarch) | |
6389 | loc_gdbarch = gdbarch; | |
6390 | ||
6391 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6392 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6393 | } |
0d381245 VP |
6394 | |
6395 | if (i == 0) | |
6396 | { | |
a6d9a66e | 6397 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6398 | set_breakpoint_count (breakpoint_count + 1); |
6399 | b->number = breakpoint_count; | |
6400 | b->thread = thread; | |
4a306c9a | 6401 | b->task = task; |
018d34a4 | 6402 | |
0d381245 VP |
6403 | b->cond_string = cond_string; |
6404 | b->ignore_count = ignore_count; | |
41447f92 | 6405 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6406 | b->disposition = disposition; |
018d34a4 | 6407 | |
6c95b8df PA |
6408 | b->pspace = sals.sals[0].pspace; |
6409 | ||
6410 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6411 | && (b->type == bp_breakpoint |
6412 | || b->type == bp_hardware_breakpoint)) | |
6413 | b->enable_state = bp_startup_disabled; | |
6414 | ||
0d381245 VP |
6415 | loc = b->loc; |
6416 | } | |
6417 | else | |
018d34a4 | 6418 | { |
39d61571 | 6419 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6420 | } |
6421 | ||
514f746b AR |
6422 | if (bp_loc_is_permanent (loc)) |
6423 | make_breakpoint_permanent (b); | |
6424 | ||
0d381245 VP |
6425 | if (b->cond_string) |
6426 | { | |
6427 | char *arg = b->cond_string; | |
d32a6982 | 6428 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6429 | if (*arg) |
db107f19 | 6430 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6431 | } |
0d381245 | 6432 | } |
018d34a4 VP |
6433 | |
6434 | if (addr_string) | |
6435 | b->addr_string = addr_string; | |
6436 | else | |
6437 | /* addr_string has to be used or breakpoint_re_set will delete | |
6438 | me. */ | |
5af949e3 UW |
6439 | b->addr_string |
6440 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 6441 | |
604133b5 | 6442 | b->ops = ops; |
018d34a4 VP |
6443 | mention (b); |
6444 | } | |
6445 | ||
ed0616c6 VP |
6446 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
6447 | elements to fill the void space. */ | |
2c0b251b PA |
6448 | static void |
6449 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
6450 | { |
6451 | int i = index_to_remove+1; | |
6452 | int last_index = sal->nelts-1; | |
6453 | ||
6454 | for (;i <= last_index; ++i) | |
6455 | sal->sals[i-1] = sal->sals[i]; | |
6456 | ||
6457 | --(sal->nelts); | |
6458 | } | |
6459 | ||
6c95b8df PA |
6460 | /* If appropriate, obtains all sals that correspond to the same file |
6461 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
6462 | will want to set a breakpoint at foo.c:line, and not really care | |
6463 | about program spaces. This is done only if SAL does not have | |
6464 | explicit PC and has line and file information. If we got just a | |
6465 | single expanded sal, return the original. | |
ed0616c6 | 6466 | |
6c95b8df PA |
6467 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
6468 | which the name of enclosing function is different from SAL. This | |
6469 | makes sure that if we have breakpoint originally set in template | |
6470 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
6471 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 6472 | |
2c0b251b | 6473 | static struct symtabs_and_lines |
ed0616c6 VP |
6474 | expand_line_sal_maybe (struct symtab_and_line sal) |
6475 | { | |
6476 | struct symtabs_and_lines expanded; | |
6477 | CORE_ADDR original_pc = sal.pc; | |
6478 | char *original_function = NULL; | |
6479 | int found; | |
6480 | int i; | |
6c95b8df | 6481 | struct cleanup *old_chain; |
ed0616c6 VP |
6482 | |
6483 | /* If we have explicit pc, don't expand. | |
6484 | If we have no line number, we can't expand. */ | |
6485 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
6486 | { | |
6487 | expanded.nelts = 1; | |
6488 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6489 | expanded.sals[0] = sal; | |
6490 | return expanded; | |
6491 | } | |
6492 | ||
6493 | sal.pc = 0; | |
6c95b8df PA |
6494 | |
6495 | old_chain = save_current_space_and_thread (); | |
6496 | ||
6497 | switch_to_program_space_and_thread (sal.pspace); | |
6498 | ||
ed0616c6 | 6499 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
6500 | |
6501 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 6502 | expanded = expand_line_sal (sal); |
6c95b8df | 6503 | |
ed0616c6 VP |
6504 | if (expanded.nelts == 1) |
6505 | { | |
3dba1c98 JB |
6506 | /* We had one sal, we got one sal. Return that sal, adjusting it |
6507 | past the function prologue if necessary. */ | |
ed0616c6 VP |
6508 | xfree (expanded.sals); |
6509 | expanded.nelts = 1; | |
6510 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6511 | sal.pc = original_pc; | |
6512 | expanded.sals[0] = sal; | |
3dba1c98 | 6513 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 6514 | do_cleanups (old_chain); |
ed0616c6 VP |
6515 | return expanded; |
6516 | } | |
6517 | ||
6518 | if (!sal.explicit_line) | |
6519 | { | |
6520 | CORE_ADDR func_addr, func_end; | |
6521 | for (i = 0; i < expanded.nelts; ++i) | |
6522 | { | |
6523 | CORE_ADDR pc = expanded.sals[i].pc; | |
6524 | char *this_function; | |
6c95b8df PA |
6525 | |
6526 | /* We need to switch threads as well since we're about to | |
6527 | read memory. */ | |
6528 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
6529 | ||
ed0616c6 VP |
6530 | if (find_pc_partial_function (pc, &this_function, |
6531 | &func_addr, &func_end)) | |
6532 | { | |
059fb39f PM |
6533 | if (this_function |
6534 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
6535 | { |
6536 | remove_sal (&expanded, i); | |
6537 | --i; | |
6538 | } | |
6539 | else if (func_addr == pc) | |
6540 | { | |
6541 | /* We're at beginning of a function, and should | |
6542 | skip prologue. */ | |
6543 | struct symbol *sym = find_pc_function (pc); | |
6544 | if (sym) | |
6545 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
6546 | else | |
d80b854b UW |
6547 | { |
6548 | /* Since find_pc_partial_function returned true, | |
6549 | we should really always find the section here. */ | |
6550 | struct obj_section *section = find_pc_section (pc); | |
6551 | if (section) | |
6552 | { | |
6553 | struct gdbarch *gdbarch | |
6554 | = get_objfile_arch (section->objfile); | |
6555 | expanded.sals[i].pc | |
6556 | = gdbarch_skip_prologue (gdbarch, pc); | |
6557 | } | |
6558 | } | |
ed0616c6 VP |
6559 | } |
6560 | } | |
6561 | } | |
6562 | } | |
3daf8fe5 JG |
6563 | else |
6564 | { | |
6565 | for (i = 0; i < expanded.nelts; ++i) | |
6566 | { | |
6567 | /* If this SAL corresponds to a breakpoint inserted using a | |
6568 | line number, then skip the function prologue if necessary. */ | |
6569 | skip_prologue_sal (&expanded.sals[i]); | |
6570 | } | |
6571 | } | |
ed0616c6 | 6572 | |
6c95b8df PA |
6573 | do_cleanups (old_chain); |
6574 | ||
ed0616c6 VP |
6575 | if (expanded.nelts <= 1) |
6576 | { | |
6577 | /* This is un ugly workaround. If we get zero | |
6578 | expanded sals then something is really wrong. | |
6579 | Fix that by returnign the original sal. */ | |
6580 | xfree (expanded.sals); | |
6581 | expanded.nelts = 1; | |
6582 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6583 | sal.pc = original_pc; | |
6584 | expanded.sals[0] = sal; | |
6585 | return expanded; | |
6586 | } | |
6587 | ||
6588 | if (original_pc) | |
6589 | { | |
6590 | found = 0; | |
6591 | for (i = 0; i < expanded.nelts; ++i) | |
6592 | if (expanded.sals[i].pc == original_pc) | |
6593 | { | |
6594 | found = 1; | |
6595 | break; | |
6596 | } | |
6597 | gdb_assert (found); | |
6598 | } | |
6599 | ||
6600 | return expanded; | |
6601 | } | |
6602 | ||
018d34a4 VP |
6603 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
6604 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
6605 | value. COND_STRING, if not NULL, specified the condition to be | |
6606 | used for all breakpoints. Essentially the only case where | |
6607 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
6608 | function. In that case, it's still not possible to specify | |
6609 | separate conditions for different overloaded functions, so | |
6610 | we take just a single condition string. | |
6611 | ||
c3f6f71d | 6612 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 6613 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
6614 | array contents). If the function fails (error() is called), the |
6615 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
6616 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
6617 | |
6618 | static void | |
a6d9a66e UW |
6619 | create_breakpoints (struct gdbarch *gdbarch, |
6620 | struct symtabs_and_lines sals, char **addr_string, | |
018d34a4 | 6621 | char *cond_string, |
c3f6f71d | 6622 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 6623 | int thread, int task, int ignore_count, |
41447f92 VP |
6624 | struct breakpoint_ops *ops, int from_tty, |
6625 | int enabled) | |
c906108c | 6626 | { |
018d34a4 VP |
6627 | int i; |
6628 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 6629 | { |
ed0616c6 VP |
6630 | struct symtabs_and_lines expanded = |
6631 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 6632 | |
a6d9a66e | 6633 | create_breakpoint (gdbarch, expanded, addr_string[i], |
018d34a4 | 6634 | cond_string, type, disposition, |
4a306c9a | 6635 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 6636 | } |
c3f6f71d | 6637 | } |
c906108c | 6638 | |
c3f6f71d JM |
6639 | /* Parse ARG which is assumed to be a SAL specification possibly |
6640 | followed by conditionals. On return, SALS contains an array of SAL | |
6641 | addresses found. ADDR_STRING contains a vector of (canonical) | |
6642 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 6643 | |
b9362cc7 | 6644 | static void |
c3f6f71d JM |
6645 | parse_breakpoint_sals (char **address, |
6646 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
6647 | char ***addr_string, |
6648 | int *not_found_ptr) | |
c3f6f71d JM |
6649 | { |
6650 | char *addr_start = *address; | |
6651 | *addr_string = NULL; | |
6652 | /* If no arg given, or if first arg is 'if ', use the default | |
6653 | breakpoint. */ | |
6654 | if ((*address) == NULL | |
6655 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
6656 | { |
6657 | if (default_breakpoint_valid) | |
6658 | { | |
c3f6f71d | 6659 | struct symtab_and_line sal; |
fe39c653 | 6660 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 6661 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
6662 | xmalloc (sizeof (struct symtab_and_line)); |
6663 | sal.pc = default_breakpoint_address; | |
6664 | sal.line = default_breakpoint_line; | |
6665 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 6666 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 6667 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
6668 | |
6669 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
6670 | the default_breakpoint_address. So make sure to set | |
6671 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
6672 | sals to include all other instances with the same symtab and line. | |
6673 | */ | |
6674 | sal.explicit_pc = 1; | |
6675 | ||
c3f6f71d JM |
6676 | sals->sals[0] = sal; |
6677 | sals->nelts = 1; | |
c906108c SS |
6678 | } |
6679 | else | |
8a3fe4f8 | 6680 | error (_("No default breakpoint address now.")); |
c906108c SS |
6681 | } |
6682 | else | |
6683 | { | |
c906108c | 6684 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
6685 | current_source_symtab (which is decode_line_1's default). This |
6686 | should produce the results we want almost all of the time while | |
1aeae86e AF |
6687 | leaving default_breakpoint_* alone. |
6688 | ObjC: However, don't match an Objective-C method name which | |
6689 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 6690 | |
c214a6fd | 6691 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 6692 | |
c906108c | 6693 | if (default_breakpoint_valid |
0378c332 | 6694 | && (!cursal.symtab |
1aeae86e AF |
6695 | || ((strchr ("+-", (*address)[0]) != NULL) |
6696 | && ((*address)[1] != '[')))) | |
c3f6f71d | 6697 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
6698 | default_breakpoint_line, addr_string, |
6699 | not_found_ptr); | |
c906108c | 6700 | else |
0101ce28 JJ |
6701 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
6702 | addr_string, not_found_ptr); | |
c906108c | 6703 | } |
c3f6f71d JM |
6704 | /* For any SAL that didn't have a canonical string, fill one in. */ |
6705 | if (sals->nelts > 0 && *addr_string == NULL) | |
6706 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
6707 | if (addr_start != (*address)) | |
c906108c | 6708 | { |
c3f6f71d JM |
6709 | int i; |
6710 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 6711 | { |
c3f6f71d JM |
6712 | /* Add the string if not present. */ |
6713 | if ((*addr_string)[i] == NULL) | |
6714 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
6715 | } |
6716 | } | |
c3f6f71d | 6717 | } |
c906108c | 6718 | |
c906108c | 6719 | |
c3f6f71d JM |
6720 | /* Convert each SAL into a real PC. Verify that the PC can be |
6721 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 6722 | |
b9362cc7 | 6723 | static void |
c3f6f71d JM |
6724 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
6725 | char *address) | |
6726 | { | |
6727 | int i; | |
6728 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 6729 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
6730 | } |
6731 | ||
7a697b8d SS |
6732 | /* Fast tracepoints may have restrictions on valid locations. For |
6733 | instance, a fast tracepoint using a jump instead of a trap will | |
6734 | likely have to overwrite more bytes than a trap would, and so can | |
6735 | only be placed where the instruction is longer than the jump, or a | |
6736 | multi-instruction sequence does not have a jump into the middle of | |
6737 | it, etc. */ | |
6738 | ||
6739 | static void | |
6740 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6741 | struct symtabs_and_lines *sals) | |
6742 | { | |
6743 | int i, rslt; | |
6744 | struct symtab_and_line *sal; | |
6745 | char *msg; | |
6746 | struct cleanup *old_chain; | |
6747 | ||
6748 | for (i = 0; i < sals->nelts; i++) | |
6749 | { | |
6750 | sal = &sals->sals[i]; | |
6751 | ||
6752 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
6753 | NULL, &msg); | |
6754 | old_chain = make_cleanup (xfree, msg); | |
6755 | ||
6756 | if (!rslt) | |
6757 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
6758 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
6759 | ||
6760 | do_cleanups (old_chain); | |
6761 | } | |
6762 | } | |
6763 | ||
05ff989b | 6764 | static void |
0101ce28 JJ |
6765 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
6766 | { | |
6767 | struct captured_parse_breakpoint_args *args = data; | |
6768 | ||
6769 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
6770 | args->not_found_ptr); | |
0101ce28 JJ |
6771 | } |
6772 | ||
018d34a4 VP |
6773 | /* Given TOK, a string specification of condition and thread, as |
6774 | accepted by the 'break' command, extract the condition | |
6775 | string and thread number and set *COND_STRING and *THREAD. | |
6776 | PC identifies the context at which the condition should be parsed. | |
6777 | If no condition is found, *COND_STRING is set to NULL. | |
6778 | If no thread is found, *THREAD is set to -1. */ | |
6779 | static void | |
6780 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 6781 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
6782 | { |
6783 | *cond_string = NULL; | |
6784 | *thread = -1; | |
6785 | while (tok && *tok) | |
6786 | { | |
6787 | char *end_tok; | |
6788 | int toklen; | |
6789 | char *cond_start = NULL; | |
6790 | char *cond_end = NULL; | |
6791 | while (*tok == ' ' || *tok == '\t') | |
6792 | tok++; | |
6793 | ||
6794 | end_tok = tok; | |
6795 | ||
6796 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6797 | end_tok++; | |
6798 | ||
6799 | toklen = end_tok - tok; | |
6800 | ||
6801 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6802 | { | |
f7545552 TT |
6803 | struct expression *expr; |
6804 | ||
018d34a4 | 6805 | tok = cond_start = end_tok + 1; |
f7545552 TT |
6806 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
6807 | xfree (expr); | |
018d34a4 VP |
6808 | cond_end = tok; |
6809 | *cond_string = savestring (cond_start, | |
6810 | cond_end - cond_start); | |
6811 | } | |
6812 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6813 | { | |
6814 | char *tmptok; | |
6815 | ||
6816 | tok = end_tok + 1; | |
6817 | tmptok = tok; | |
6818 | *thread = strtol (tok, &tok, 0); | |
6819 | if (tok == tmptok) | |
6820 | error (_("Junk after thread keyword.")); | |
6821 | if (!valid_thread_id (*thread)) | |
6822 | error (_("Unknown thread %d."), *thread); | |
6823 | } | |
4a306c9a JB |
6824 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
6825 | { | |
6826 | char *tmptok; | |
6827 | ||
6828 | tok = end_tok + 1; | |
6829 | tmptok = tok; | |
6830 | *task = strtol (tok, &tok, 0); | |
6831 | if (tok == tmptok) | |
6832 | error (_("Junk after task keyword.")); | |
6833 | if (!valid_task_id (*task)) | |
b6199126 | 6834 | error (_("Unknown task %d."), *task); |
4a306c9a | 6835 | } |
018d34a4 VP |
6836 | else |
6837 | error (_("Junk at end of arguments.")); | |
6838 | } | |
6839 | } | |
6840 | ||
fd9b8c24 PA |
6841 | /* Set a breakpoint. This function is shared between CLI and MI |
6842 | functions for setting a breakpoint. This function has two major | |
6843 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
6844 | parameter. If non-zero, the function will parse arg, extracting | |
6845 | breakpoint location, address and thread. Otherwise, ARG is just the | |
6846 | location of breakpoint, with condition and thread specified by the | |
6847 | COND_STRING and THREAD parameters. Returns true if any breakpoint | |
6848 | was created; false otherwise. */ | |
0101ce28 | 6849 | |
fd9b8c24 | 6850 | static int |
a6d9a66e UW |
6851 | break_command_really (struct gdbarch *gdbarch, |
6852 | char *arg, char *cond_string, int thread, | |
60c46647 | 6853 | int parse_condition_and_thread, |
1042e4c0 | 6854 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
6855 | int ignore_count, |
6856 | enum auto_boolean pending_break_support, | |
604133b5 | 6857 | struct breakpoint_ops *ops, |
41447f92 VP |
6858 | int from_tty, |
6859 | int enabled) | |
c3f6f71d | 6860 | { |
71fff37b | 6861 | struct gdb_exception e; |
c3f6f71d | 6862 | struct symtabs_and_lines sals; |
0101ce28 | 6863 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
6864 | char *copy_arg; |
6865 | char *err_msg; | |
c3f6f71d JM |
6866 | char *addr_start = arg; |
6867 | char **addr_string; | |
6868 | struct cleanup *old_chain; | |
80c99de1 | 6869 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 6870 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 6871 | int i; |
0101ce28 | 6872 | int pending = 0; |
0101ce28 | 6873 | int not_found = 0; |
1042e4c0 | 6874 | enum bptype type_wanted; |
4a306c9a | 6875 | int task = 0; |
c3f6f71d | 6876 | |
c3f6f71d JM |
6877 | sals.sals = NULL; |
6878 | sals.nelts = 0; | |
6879 | addr_string = NULL; | |
c3f6f71d | 6880 | |
0101ce28 JJ |
6881 | parse_args.arg_p = &arg; |
6882 | parse_args.sals_p = &sals; | |
6883 | parse_args.addr_string_p = &addr_string; | |
6884 | parse_args.not_found_ptr = ¬_found; | |
6885 | ||
05ff989b AC |
6886 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
6887 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
6888 | |
6889 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 6890 | switch (e.reason) |
0101ce28 | 6891 | { |
05ff989b | 6892 | case RETURN_QUIT: |
98deb0da | 6893 | throw_exception (e); |
05ff989b AC |
6894 | case RETURN_ERROR: |
6895 | switch (e.error) | |
0101ce28 | 6896 | { |
05ff989b | 6897 | case NOT_FOUND_ERROR: |
0101ce28 | 6898 | |
05ff989b AC |
6899 | /* If pending breakpoint support is turned off, throw |
6900 | error. */ | |
fa8d40ab JJ |
6901 | |
6902 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
6903 | throw_exception (e); |
6904 | ||
6905 | exception_print (gdb_stderr, e); | |
fa8d40ab | 6906 | |
05ff989b AC |
6907 | /* If pending breakpoint support is auto query and the user |
6908 | selects no, then simply return the error code. */ | |
059fb39f PM |
6909 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
6910 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
fd9b8c24 | 6911 | return 0; |
fa8d40ab | 6912 | |
05ff989b AC |
6913 | /* At this point, either the user was queried about setting |
6914 | a pending breakpoint and selected yes, or pending | |
6915 | breakpoint behavior is on and thus a pending breakpoint | |
6916 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
6917 | copy_arg = xstrdup (addr_start); |
6918 | addr_string = ©_arg; | |
6919 | sals.nelts = 1; | |
6920 | sals.sals = &pending_sal; | |
6921 | pending_sal.pc = 0; | |
6922 | pending = 1; | |
05ff989b AC |
6923 | break; |
6924 | default: | |
98deb0da | 6925 | throw_exception (e); |
0101ce28 | 6926 | } |
05ff989b AC |
6927 | default: |
6928 | if (!sals.nelts) | |
fd9b8c24 | 6929 | return 0; |
0101ce28 | 6930 | } |
c3f6f71d JM |
6931 | |
6932 | /* Create a chain of things that always need to be cleaned up. */ | |
6933 | old_chain = make_cleanup (null_cleanup, 0); | |
6934 | ||
0101ce28 JJ |
6935 | if (!pending) |
6936 | { | |
6937 | /* Make sure that all storage allocated to SALS gets freed. */ | |
6938 | make_cleanup (xfree, sals.sals); | |
6939 | ||
6940 | /* Cleanup the addr_string array but not its contents. */ | |
6941 | make_cleanup (xfree, addr_string); | |
6942 | } | |
c3f6f71d | 6943 | |
c3f6f71d JM |
6944 | /* ----------------------------- SNIP ----------------------------- |
6945 | Anything added to the cleanup chain beyond this point is assumed | |
6946 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
6947 | then the memory is not reclaimed. */ |
6948 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
6949 | |
6950 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 6951 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
6952 | for (i = 0; i < sals.nelts; i++) |
6953 | { | |
6954 | if (addr_string[i] != NULL) | |
b8c9b27d | 6955 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
6956 | } |
6957 | ||
6958 | /* Resolve all line numbers to PC's and verify that the addresses | |
6959 | are ok for the target. */ | |
0101ce28 JJ |
6960 | if (!pending) |
6961 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 6962 | |
1042e4c0 | 6963 | type_wanted = (traceflag |
7a697b8d | 6964 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
6965 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
6966 | ||
7a697b8d SS |
6967 | /* Fast tracepoints may have additional restrictions on location. */ |
6968 | if (type_wanted == bp_fast_tracepoint) | |
6969 | check_fast_tracepoint_sals (gdbarch, &sals); | |
6970 | ||
c3f6f71d JM |
6971 | /* Verify that condition can be parsed, before setting any |
6972 | breakpoints. Allocate a separate condition expression for each | |
6973 | breakpoint. */ | |
0101ce28 | 6974 | if (!pending) |
c3f6f71d | 6975 | { |
2f069f6f | 6976 | if (parse_condition_and_thread) |
72b2ff0e VP |
6977 | { |
6978 | /* Here we only parse 'arg' to separate condition | |
6979 | from thread number, so parsing in context of first | |
6980 | sal is OK. When setting the breakpoint we'll | |
6981 | re-parse it in context of each sal. */ | |
6982 | cond_string = NULL; | |
6983 | thread = -1; | |
4a306c9a JB |
6984 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
6985 | &thread, &task); | |
72b2ff0e VP |
6986 | if (cond_string) |
6987 | make_cleanup (xfree, cond_string); | |
6988 | } | |
2f069f6f | 6989 | else |
72b2ff0e VP |
6990 | { |
6991 | /* Create a private copy of condition string. */ | |
6992 | if (cond_string) | |
6993 | { | |
6994 | cond_string = xstrdup (cond_string); | |
6995 | make_cleanup (xfree, cond_string); | |
6996 | } | |
6997 | } | |
a6d9a66e | 6998 | create_breakpoints (gdbarch, sals, addr_string, cond_string, type_wanted, |
0101ce28 | 6999 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 7000 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 7001 | } |
0101ce28 JJ |
7002 | else |
7003 | { | |
fe3f5fa8 | 7004 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
7005 | struct breakpoint *b; |
7006 | ||
0101ce28 JJ |
7007 | make_cleanup (xfree, copy_arg); |
7008 | ||
a6d9a66e | 7009 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
7010 | set_breakpoint_count (breakpoint_count + 1); |
7011 | b->number = breakpoint_count; | |
72b2ff0e | 7012 | b->thread = -1; |
018d34a4 | 7013 | b->addr_string = addr_string[0]; |
72b2ff0e | 7014 | b->cond_string = NULL; |
0101ce28 | 7015 | b->ignore_count = ignore_count; |
0101ce28 | 7016 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7017 | b->condition_not_parsed = 1; |
604133b5 | 7018 | b->ops = ops; |
41447f92 | 7019 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7020 | b->pspace = current_program_space; |
74960c60 | 7021 | |
6c95b8df | 7022 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7023 | && (b->type == bp_breakpoint |
7024 | || b->type == bp_hardware_breakpoint)) | |
7025 | b->enable_state = bp_startup_disabled; | |
7026 | ||
0101ce28 JJ |
7027 | mention (b); |
7028 | } | |
7029 | ||
c3f6f71d | 7030 | if (sals.nelts > 1) |
8a3fe4f8 AC |
7031 | warning (_("Multiple breakpoints were set.\n" |
7032 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
7033 | /* That's it. Discard the cleanups for data inserted into the |
7034 | breakpoint. */ | |
7035 | discard_cleanups (bkpt_chain); | |
7036 | /* But cleanup everything else. */ | |
c3f6f71d | 7037 | do_cleanups (old_chain); |
217dc9e2 | 7038 | |
80c99de1 | 7039 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7040 | update_global_location_list (1); |
fd9b8c24 PA |
7041 | |
7042 | return 1; | |
c3f6f71d | 7043 | } |
c906108c | 7044 | |
72b2ff0e VP |
7045 | /* Set a breakpoint. |
7046 | ARG is a string describing breakpoint address, | |
7047 | condition, and thread. | |
7048 | FLAG specifies if a breakpoint is hardware on, | |
7049 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7050 | and BP_TEMPFLAG. */ | |
7051 | ||
98deb0da | 7052 | static void |
72b2ff0e | 7053 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7054 | { |
72b2ff0e VP |
7055 | int hardwareflag = flag & BP_HARDWAREFLAG; |
7056 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 7057 | |
a6d9a66e UW |
7058 | break_command_really (get_current_arch (), |
7059 | arg, | |
98deb0da | 7060 | NULL, 0, 1 /* parse arg */, |
1042e4c0 | 7061 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 7062 | 0 /* Ignore count */, |
604133b5 AR |
7063 | pending_break_support, |
7064 | NULL /* breakpoint_ops */, | |
41447f92 VP |
7065 | from_tty, |
7066 | 1 /* enabled */); | |
c906108c SS |
7067 | } |
7068 | ||
72b2ff0e | 7069 | |
98deb0da | 7070 | void |
a6d9a66e UW |
7071 | set_breakpoint (struct gdbarch *gdbarch, |
7072 | char *address, char *condition, | |
c3f6f71d | 7073 | int hardwareflag, int tempflag, |
ce43223b | 7074 | int thread, int ignore_count, |
41447f92 | 7075 | int pending, int enabled) |
c3f6f71d | 7076 | { |
a6d9a66e UW |
7077 | break_command_really (gdbarch, |
7078 | address, condition, thread, | |
98deb0da | 7079 | 0 /* condition and thread are valid. */, |
1042e4c0 | 7080 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
7081 | ignore_count, |
7082 | pending | |
7083 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 7084 | NULL, 0, enabled); |
c3f6f71d JM |
7085 | } |
7086 | ||
6a048695 JB |
7087 | /* Adjust SAL to the first instruction past the function prologue. |
7088 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
7089 | the debugging information. explicit_pc and explicit_line are |
7090 | not modified. | |
6a048695 JB |
7091 | |
7092 | If SAL is already past the prologue, then do nothing. */ | |
7093 | ||
7094 | static void | |
7095 | skip_prologue_sal (struct symtab_and_line *sal) | |
7096 | { | |
6c95b8df | 7097 | struct symbol *sym; |
6a048695 | 7098 | struct symtab_and_line start_sal; |
6c95b8df | 7099 | struct cleanup *old_chain; |
6a048695 | 7100 | |
6c95b8df | 7101 | old_chain = save_current_space_and_thread (); |
6a048695 | 7102 | |
6c95b8df PA |
7103 | sym = find_pc_function (sal->pc); |
7104 | if (sym != NULL) | |
3daf8fe5 | 7105 | { |
6c95b8df PA |
7106 | start_sal = find_function_start_sal (sym, 1); |
7107 | if (sal->pc < start_sal.pc) | |
7108 | { | |
7109 | start_sal.explicit_line = sal->explicit_line; | |
7110 | start_sal.explicit_pc = sal->explicit_pc; | |
7111 | *sal = start_sal; | |
7112 | } | |
3daf8fe5 | 7113 | } |
6c95b8df PA |
7114 | |
7115 | do_cleanups (old_chain); | |
6a048695 | 7116 | } |
c3f6f71d | 7117 | |
c906108c SS |
7118 | /* Helper function for break_command_1 and disassemble_command. */ |
7119 | ||
7120 | void | |
fba45db2 | 7121 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7122 | { |
7123 | CORE_ADDR pc; | |
7124 | ||
7125 | if (sal->pc == 0 && sal->symtab != NULL) | |
7126 | { | |
7127 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7128 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7129 | sal->line, sal->symtab->filename); |
7130 | sal->pc = pc; | |
6a048695 JB |
7131 | |
7132 | /* If this SAL corresponds to a breakpoint inserted using | |
7133 | a line number, then skip the function prologue if necessary. */ | |
7134 | if (sal->explicit_line) | |
56ef84b1 TT |
7135 | { |
7136 | /* Preserve the original line number. */ | |
7137 | int saved_line = sal->line; | |
7138 | skip_prologue_sal (sal); | |
7139 | sal->line = saved_line; | |
7140 | } | |
c906108c SS |
7141 | } |
7142 | ||
7143 | if (sal->section == 0 && sal->symtab != NULL) | |
7144 | { | |
7145 | struct blockvector *bv; | |
c5aa993b JM |
7146 | struct block *b; |
7147 | struct symbol *sym; | |
c906108c | 7148 | |
801e3a5b | 7149 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7150 | if (bv != NULL) |
7151 | { | |
7f0df278 | 7152 | sym = block_linkage_function (b); |
c906108c SS |
7153 | if (sym != NULL) |
7154 | { | |
7155 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7156 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7157 | } |
7158 | else | |
7159 | { | |
7160 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7161 | have to look harder. This case can be executed if we have |
7162 | line numbers but no functions (as can happen in assembly | |
7163 | source). */ | |
c906108c | 7164 | |
c5aa993b | 7165 | struct minimal_symbol *msym; |
6c95b8df PA |
7166 | struct cleanup *old_chain = save_current_space_and_thread (); |
7167 | ||
7168 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7169 | |
7170 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7171 | if (msym) | |
714835d5 | 7172 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7173 | |
7174 | do_cleanups (old_chain); | |
c906108c SS |
7175 | } |
7176 | } | |
7177 | } | |
7178 | } | |
7179 | ||
7180 | void | |
fba45db2 | 7181 | break_command (char *arg, int from_tty) |
c906108c | 7182 | { |
db107f19 | 7183 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7184 | } |
7185 | ||
c906108c | 7186 | void |
fba45db2 | 7187 | tbreak_command (char *arg, int from_tty) |
c906108c | 7188 | { |
db107f19 | 7189 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7190 | } |
7191 | ||
c906108c | 7192 | static void |
fba45db2 | 7193 | hbreak_command (char *arg, int from_tty) |
c906108c | 7194 | { |
db107f19 | 7195 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7196 | } |
7197 | ||
7198 | static void | |
fba45db2 | 7199 | thbreak_command (char *arg, int from_tty) |
c906108c | 7200 | { |
db107f19 | 7201 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7202 | } |
7203 | ||
7204 | static void | |
fba45db2 | 7205 | stop_command (char *arg, int from_tty) |
c906108c | 7206 | { |
a3f17187 | 7207 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7208 | Usage: stop in <function | address>\n\ |
a3f17187 | 7209 | stop at <line>\n")); |
c906108c SS |
7210 | } |
7211 | ||
7212 | static void | |
fba45db2 | 7213 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7214 | { |
7215 | int badInput = 0; | |
7216 | ||
c5aa993b | 7217 | if (arg == (char *) NULL) |
c906108c SS |
7218 | badInput = 1; |
7219 | else if (*arg != '*') | |
7220 | { | |
7221 | char *argptr = arg; | |
7222 | int hasColon = 0; | |
7223 | ||
53a5351d JM |
7224 | /* look for a ':'. If this is a line number specification, then |
7225 | say it is bad, otherwise, it should be an address or | |
7226 | function/method name */ | |
c906108c | 7227 | while (*argptr && !hasColon) |
c5aa993b JM |
7228 | { |
7229 | hasColon = (*argptr == ':'); | |
7230 | argptr++; | |
7231 | } | |
c906108c SS |
7232 | |
7233 | if (hasColon) | |
c5aa993b | 7234 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7235 | else |
c5aa993b | 7236 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7237 | } |
7238 | ||
7239 | if (badInput) | |
a3f17187 | 7240 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7241 | else |
db107f19 | 7242 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7243 | } |
7244 | ||
7245 | static void | |
fba45db2 | 7246 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7247 | { |
7248 | int badInput = 0; | |
7249 | ||
c5aa993b | 7250 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7251 | badInput = 1; |
7252 | else | |
7253 | { | |
7254 | char *argptr = arg; | |
7255 | int hasColon = 0; | |
7256 | ||
7257 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7258 | it is probably a line number. */ |
c906108c | 7259 | while (*argptr && !hasColon) |
c5aa993b JM |
7260 | { |
7261 | hasColon = (*argptr == ':'); | |
7262 | argptr++; | |
7263 | } | |
c906108c SS |
7264 | |
7265 | if (hasColon) | |
c5aa993b | 7266 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7267 | else |
c5aa993b | 7268 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7269 | } |
7270 | ||
7271 | if (badInput) | |
a3f17187 | 7272 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7273 | else |
db107f19 | 7274 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7275 | } |
7276 | ||
53a5351d JM |
7277 | /* accessflag: hw_write: watch write, |
7278 | hw_read: watch read, | |
7279 | hw_access: watch access (read or write) */ | |
c906108c | 7280 | static void |
fba45db2 | 7281 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7282 | { |
a6d9a66e | 7283 | struct gdbarch *gdbarch = get_current_arch (); |
d983da9c | 7284 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
7285 | struct expression *exp; |
7286 | struct block *exp_valid_block; | |
7287 | struct value *val, *mark; | |
7288 | struct frame_info *frame; | |
c906108c SS |
7289 | char *exp_start = NULL; |
7290 | char *exp_end = NULL; | |
37e4754d | 7291 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7292 | int toklen; |
7293 | char *cond_start = NULL; | |
7294 | char *cond_end = NULL; | |
c906108c SS |
7295 | int i, other_type_used, target_resources_ok = 0; |
7296 | enum bptype bp_type; | |
7297 | int mem_cnt = 0; | |
37e4754d | 7298 | int thread = -1; |
c906108c | 7299 | |
37e4754d LM |
7300 | /* Make sure that we actually have parameters to parse. */ |
7301 | if (arg != NULL && arg[0] != '\0') | |
7302 | { | |
7303 | toklen = strlen (arg); /* Size of argument list. */ | |
7304 | ||
7305 | /* Points tok to the end of the argument list. */ | |
7306 | tok = arg + toklen - 1; | |
7307 | ||
7308 | /* Go backwards in the parameters list. Skip the last parameter. | |
7309 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7310 | be the thread identifier. */ | |
7311 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7312 | tok--; | |
7313 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7314 | tok--; | |
7315 | ||
7316 | /* Points end_tok to the beginning of the last token. */ | |
7317 | id_tok_start = tok + 1; | |
7318 | ||
7319 | /* Go backwards in the parameters list. Skip one more parameter. | |
7320 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7321 | reach a "thread" token. */ | |
7322 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7323 | tok--; | |
7324 | ||
7325 | end_tok = tok; | |
7326 | ||
7327 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7328 | tok--; | |
7329 | ||
7330 | /* Move the pointer forward to skip the whitespace and | |
7331 | calculate the length of the token. */ | |
7332 | tok++; | |
7333 | toklen = end_tok - tok; | |
7334 | ||
7335 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7336 | { | |
7337 | /* At this point we've found a "thread" token, which means | |
7338 | the user is trying to set a watchpoint that triggers | |
7339 | only in a specific thread. */ | |
7340 | char *endp; | |
7341 | ||
7342 | /* Extract the thread ID from the next token. */ | |
7343 | thread = strtol (id_tok_start, &endp, 0); | |
7344 | ||
7345 | /* Check if the user provided a valid numeric value for the | |
7346 | thread ID. */ | |
7347 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7348 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7349 | ||
7350 | /* Check if the thread actually exists. */ | |
7351 | if (!valid_thread_id (thread)) | |
7352 | error (_("Unknown thread %d."), thread); | |
7353 | ||
7354 | /* Truncate the string and get rid of the thread <thread_num> | |
7355 | parameter before the parameter list is parsed by the | |
7356 | evaluate_expression() function. */ | |
7357 | *tok = '\0'; | |
7358 | } | |
7359 | } | |
7360 | ||
7361 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7362 | innermost_block = NULL; |
7363 | exp_start = arg; | |
7364 | exp = parse_exp_1 (&arg, 0, 0); | |
7365 | exp_end = arg; | |
fa8a61dc TT |
7366 | /* Remove trailing whitespace from the expression before saving it. |
7367 | This makes the eventual display of the expression string a bit | |
7368 | prettier. */ | |
7369 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7370 | --exp_end; | |
7371 | ||
c906108c SS |
7372 | exp_valid_block = innermost_block; |
7373 | mark = value_mark (); | |
fa4727a6 DJ |
7374 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7375 | if (val != NULL) | |
7376 | release_value (val); | |
c906108c SS |
7377 | |
7378 | tok = arg; | |
7379 | while (*tok == ' ' || *tok == '\t') | |
7380 | tok++; | |
7381 | end_tok = tok; | |
7382 | ||
7383 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7384 | end_tok++; | |
7385 | ||
7386 | toklen = end_tok - tok; | |
7387 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7388 | { | |
2d134ed3 PA |
7389 | struct expression *cond; |
7390 | ||
c906108c SS |
7391 | tok = cond_start = end_tok + 1; |
7392 | cond = parse_exp_1 (&tok, 0, 0); | |
2d134ed3 | 7393 | xfree (cond); |
c906108c SS |
7394 | cond_end = tok; |
7395 | } | |
7396 | if (*tok) | |
8a3fe4f8 | 7397 | error (_("Junk at end of command.")); |
c906108c | 7398 | |
53a5351d | 7399 | if (accessflag == hw_read) |
c5aa993b | 7400 | bp_type = bp_read_watchpoint; |
53a5351d | 7401 | else if (accessflag == hw_access) |
c5aa993b JM |
7402 | bp_type = bp_access_watchpoint; |
7403 | else | |
7404 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
7405 | |
7406 | mem_cnt = can_use_hardware_watchpoint (val); | |
7407 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 7408 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
7409 | if (mem_cnt != 0) |
7410 | { | |
7411 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 7412 | target_resources_ok = |
d92524f1 | 7413 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 7414 | other_type_used); |
c5aa993b | 7415 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7416 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 7417 | |
c5aa993b | 7418 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7419 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 7420 | } |
c906108c | 7421 | |
4d28f7a8 KB |
7422 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
7423 | watchpoint could not be set. */ | |
7424 | if (!mem_cnt || target_resources_ok <= 0) | |
7425 | bp_type = bp_watchpoint; | |
7426 | ||
d983da9c | 7427 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
7428 | |
7429 | /* If the expression is "local", then set up a "watchpoint scope" | |
7430 | breakpoint at the point where we've left the scope of the watchpoint | |
7431 | expression. Create the scope breakpoint before the watchpoint, so | |
7432 | that we will encounter it first in bpstat_stop_status. */ | |
edb3359d | 7433 | if (innermost_block && frame) |
d983da9c | 7434 | { |
edb3359d DJ |
7435 | if (frame_id_p (frame_unwind_caller_id (frame))) |
7436 | { | |
7437 | scope_breakpoint | |
a6d9a66e UW |
7438 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
7439 | frame_unwind_caller_pc (frame), | |
edb3359d | 7440 | bp_watchpoint_scope); |
d983da9c | 7441 | |
edb3359d | 7442 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 7443 | |
edb3359d DJ |
7444 | /* Automatically delete the breakpoint when it hits. */ |
7445 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 7446 | |
edb3359d DJ |
7447 | /* Only break in the proper frame (help with recursion). */ |
7448 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 7449 | |
edb3359d | 7450 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
7451 | scope_breakpoint->loc->gdbarch |
7452 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
7453 | scope_breakpoint->loc->requested_address |
7454 | = frame_unwind_caller_pc (frame); | |
7455 | scope_breakpoint->loc->address | |
a6d9a66e UW |
7456 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
7457 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
7458 | scope_breakpoint->type); |
7459 | } | |
d983da9c DJ |
7460 | } |
7461 | ||
c906108c | 7462 | /* Now set up the breakpoint. */ |
2d134ed3 | 7463 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
7464 | set_breakpoint_count (breakpoint_count + 1); |
7465 | b->number = breakpoint_count; | |
37e4754d | 7466 | b->thread = thread; |
b5de0fa7 | 7467 | b->disposition = disp_donttouch; |
c906108c SS |
7468 | b->exp = exp; |
7469 | b->exp_valid_block = exp_valid_block; | |
7470 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
7471 | b->val = val; | |
fa4727a6 | 7472 | b->val_valid = 1; |
c906108c SS |
7473 | if (cond_start) |
7474 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
7475 | else | |
7476 | b->cond_string = 0; | |
c5aa993b | 7477 | |
c906108c | 7478 | if (frame) |
f6bc2008 PA |
7479 | { |
7480 | b->watchpoint_frame = get_frame_id (frame); | |
7481 | b->watchpoint_thread = inferior_ptid; | |
7482 | } | |
c906108c | 7483 | else |
f6bc2008 PA |
7484 | { |
7485 | b->watchpoint_frame = null_frame_id; | |
7486 | b->watchpoint_thread = null_ptid; | |
7487 | } | |
c906108c | 7488 | |
d983da9c | 7489 | if (scope_breakpoint != NULL) |
c906108c | 7490 | { |
d983da9c DJ |
7491 | /* The scope breakpoint is related to the watchpoint. We will |
7492 | need to act on them together. */ | |
7493 | b->related_breakpoint = scope_breakpoint; | |
7494 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 7495 | } |
d983da9c | 7496 | |
c906108c | 7497 | value_free_to_mark (mark); |
2d134ed3 PA |
7498 | |
7499 | /* Finally update the new watchpoint. This creates the locations | |
7500 | that should be inserted. */ | |
7501 | update_watchpoint (b, 1); | |
7502 | ||
c906108c | 7503 | mention (b); |
b60e7edf | 7504 | update_global_location_list (1); |
c906108c SS |
7505 | } |
7506 | ||
7507 | /* Return count of locations need to be watched and can be handled | |
7508 | in hardware. If the watchpoint can not be handled | |
7509 | in hardware return zero. */ | |
7510 | ||
c906108c | 7511 | static int |
fba45db2 | 7512 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
7513 | { |
7514 | int found_memory_cnt = 0; | |
2e70b7b9 | 7515 | struct value *head = v; |
c906108c SS |
7516 | |
7517 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 7518 | if (!can_use_hw_watchpoints) |
c906108c | 7519 | return 0; |
c5aa993b | 7520 | |
5c44784c JM |
7521 | /* Make sure that the value of the expression depends only upon |
7522 | memory contents, and values computed from them within GDB. If we | |
7523 | find any register references or function calls, we can't use a | |
7524 | hardware watchpoint. | |
7525 | ||
7526 | The idea here is that evaluating an expression generates a series | |
7527 | of values, one holding the value of every subexpression. (The | |
7528 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
7529 | a*b+c.) GDB's values hold almost enough information to establish | |
7530 | the criteria given above --- they identify memory lvalues, | |
7531 | register lvalues, computed values, etcetera. So we can evaluate | |
7532 | the expression, and then scan the chain of values that leaves | |
7533 | behind to decide whether we can detect any possible change to the | |
7534 | expression's final value using only hardware watchpoints. | |
7535 | ||
7536 | However, I don't think that the values returned by inferior | |
7537 | function calls are special in any way. So this function may not | |
7538 | notice that an expression involving an inferior function call | |
7539 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 7540 | for (; v; v = value_next (v)) |
c906108c | 7541 | { |
5c44784c | 7542 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 7543 | { |
d69fe07e | 7544 | if (value_lazy (v)) |
5c44784c JM |
7545 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
7546 | we either just used its address (e.g., `a' in `a.b') or | |
7547 | we never needed it at all (e.g., `a' in `a,b'). */ | |
7548 | ; | |
53a5351d | 7549 | else |
5c44784c JM |
7550 | { |
7551 | /* Ahh, memory we actually used! Check if we can cover | |
7552 | it with hardware watchpoints. */ | |
df407dfe | 7553 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
7554 | |
7555 | /* We only watch structs and arrays if user asked for it | |
7556 | explicitly, never if they just happen to appear in a | |
7557 | middle of some value chain. */ | |
7558 | if (v == head | |
7559 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
7560 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
7561 | { | |
42ae5230 | 7562 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 7563 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 7564 | |
d92524f1 | 7565 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
7566 | return 0; |
7567 | else | |
7568 | found_memory_cnt++; | |
7569 | } | |
5c44784c | 7570 | } |
c5aa993b | 7571 | } |
5086187c AC |
7572 | else if (VALUE_LVAL (v) != not_lval |
7573 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 7574 | return 0; /* ??? What does this represent? */ |
5086187c | 7575 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 7576 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
7577 | } |
7578 | ||
7579 | /* The expression itself looks suitable for using a hardware | |
7580 | watchpoint, but give the target machine a chance to reject it. */ | |
7581 | return found_memory_cnt; | |
7582 | } | |
7583 | ||
8b93c638 | 7584 | void |
fba45db2 | 7585 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7586 | { |
7587 | watch_command (arg, from_tty); | |
7588 | } | |
8926118c | 7589 | |
c5aa993b | 7590 | static void |
fba45db2 | 7591 | watch_command (char *arg, int from_tty) |
c906108c | 7592 | { |
53a5351d | 7593 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
7594 | } |
7595 | ||
8b93c638 | 7596 | void |
fba45db2 | 7597 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7598 | { |
7599 | rwatch_command (arg, from_tty); | |
7600 | } | |
8926118c | 7601 | |
c5aa993b | 7602 | static void |
fba45db2 | 7603 | rwatch_command (char *arg, int from_tty) |
c906108c | 7604 | { |
53a5351d | 7605 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
7606 | } |
7607 | ||
8b93c638 | 7608 | void |
fba45db2 | 7609 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7610 | { |
7611 | awatch_command (arg, from_tty); | |
7612 | } | |
8926118c | 7613 | |
c5aa993b | 7614 | static void |
fba45db2 | 7615 | awatch_command (char *arg, int from_tty) |
c906108c | 7616 | { |
53a5351d | 7617 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 7618 | } |
c906108c | 7619 | \f |
c5aa993b | 7620 | |
43ff13b4 | 7621 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
7622 | because it uses the mechanisms of breakpoints. */ |
7623 | ||
bfec99b2 PA |
7624 | struct until_break_command_continuation_args |
7625 | { | |
7626 | struct breakpoint *breakpoint; | |
7627 | struct breakpoint *breakpoint2; | |
7628 | }; | |
7629 | ||
43ff13b4 JM |
7630 | /* This function is called by fetch_inferior_event via the |
7631 | cmd_continuation pointer, to complete the until command. It takes | |
7632 | care of cleaning up the temporary breakpoints set up by the until | |
7633 | command. */ | |
c2c6d25f | 7634 | static void |
604ead4a | 7635 | until_break_command_continuation (void *arg) |
43ff13b4 | 7636 | { |
bfec99b2 PA |
7637 | struct until_break_command_continuation_args *a = arg; |
7638 | ||
7639 | delete_breakpoint (a->breakpoint); | |
7640 | if (a->breakpoint2) | |
7641 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
7642 | } |
7643 | ||
c906108c | 7644 | void |
ae66c1fc | 7645 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
7646 | { |
7647 | struct symtabs_and_lines sals; | |
7648 | struct symtab_and_line sal; | |
206415a3 | 7649 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 7650 | struct breakpoint *breakpoint; |
f107f563 | 7651 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
7652 | struct cleanup *old_chain; |
7653 | ||
7654 | clear_proceed_status (); | |
7655 | ||
7656 | /* Set a breakpoint where the user wants it and at return from | |
7657 | this function */ | |
c5aa993b | 7658 | |
c906108c SS |
7659 | if (default_breakpoint_valid) |
7660 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 7661 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 7662 | else |
53a5351d | 7663 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 7664 | 0, (char ***) NULL, NULL); |
c5aa993b | 7665 | |
c906108c | 7666 | if (sals.nelts != 1) |
8a3fe4f8 | 7667 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 7668 | |
c906108c | 7669 | sal = sals.sals[0]; |
b8c9b27d | 7670 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 7671 | |
c906108c | 7672 | if (*arg) |
8a3fe4f8 | 7673 | error (_("Junk at end of arguments.")); |
c5aa993b | 7674 | |
c906108c | 7675 | resolve_sal_pc (&sal); |
c5aa993b | 7676 | |
ae66c1fc EZ |
7677 | if (anywhere) |
7678 | /* If the user told us to continue until a specified location, | |
7679 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
7680 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
7681 | null_frame_id, bp_until); | |
ae66c1fc | 7682 | else |
edb3359d | 7683 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 7684 | at the very same frame. */ |
a6d9a66e UW |
7685 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
7686 | get_stack_frame_id (frame), | |
ae66c1fc | 7687 | bp_until); |
c5aa993b | 7688 | |
f107f563 | 7689 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 7690 | |
ae66c1fc EZ |
7691 | /* Keep within the current frame, or in frames called by the current |
7692 | one. */ | |
edb3359d DJ |
7693 | |
7694 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 7695 | { |
edb3359d DJ |
7696 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
7697 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
7698 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
7699 | sal, | |
edb3359d | 7700 | frame_unwind_caller_id (frame), |
f107f563 VP |
7701 | bp_until); |
7702 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 7703 | } |
c5aa993b | 7704 | |
c906108c | 7705 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
7706 | |
7707 | /* If we are running asynchronously, and proceed call above has actually | |
7708 | managed to start the target, arrange for breakpoints to be | |
7709 | deleted when the target stops. Otherwise, we're already stopped and | |
7710 | delete breakpoints via cleanup chain. */ | |
7711 | ||
8ea051c5 | 7712 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 7713 | { |
bfec99b2 PA |
7714 | struct until_break_command_continuation_args *args; |
7715 | args = xmalloc (sizeof (*args)); | |
f107f563 | 7716 | |
bfec99b2 PA |
7717 | args->breakpoint = breakpoint; |
7718 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
7719 | |
7720 | discard_cleanups (old_chain); | |
95e54da7 PA |
7721 | add_continuation (inferior_thread (), |
7722 | until_break_command_continuation, args, | |
604ead4a | 7723 | xfree); |
f107f563 VP |
7724 | } |
7725 | else | |
c5aa993b | 7726 | do_cleanups (old_chain); |
c906108c | 7727 | } |
ae66c1fc | 7728 | |
c906108c | 7729 | static void |
fba45db2 | 7730 | ep_skip_leading_whitespace (char **s) |
c906108c | 7731 | { |
c5aa993b JM |
7732 | if ((s == NULL) || (*s == NULL)) |
7733 | return; | |
7734 | while (isspace (**s)) | |
7735 | *s += 1; | |
c906108c | 7736 | } |
c5aa993b | 7737 | |
c906108c SS |
7738 | /* This function attempts to parse an optional "if <cond>" clause |
7739 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 7740 | |
c906108c SS |
7741 | Else, it returns a pointer to the condition string. (It does not |
7742 | attempt to evaluate the string against a particular block.) And, | |
7743 | it updates arg to point to the first character following the parsed | |
7744 | if clause in the arg string. */ | |
53a5351d | 7745 | |
c906108c | 7746 | static char * |
fba45db2 | 7747 | ep_parse_optional_if_clause (char **arg) |
c906108c | 7748 | { |
c5aa993b JM |
7749 | char *cond_string; |
7750 | ||
7751 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 7752 | return NULL; |
c5aa993b | 7753 | |
c906108c SS |
7754 | /* Skip the "if" keyword. */ |
7755 | (*arg) += 2; | |
c5aa993b | 7756 | |
c906108c SS |
7757 | /* Skip any extra leading whitespace, and record the start of the |
7758 | condition string. */ | |
7759 | ep_skip_leading_whitespace (arg); | |
7760 | cond_string = *arg; | |
c5aa993b | 7761 | |
c906108c SS |
7762 | /* Assume that the condition occupies the remainder of the arg string. */ |
7763 | (*arg) += strlen (cond_string); | |
c5aa993b | 7764 | |
c906108c SS |
7765 | return cond_string; |
7766 | } | |
c5aa993b | 7767 | |
c906108c SS |
7768 | /* Commands to deal with catching events, such as signals, exceptions, |
7769 | process start/exit, etc. */ | |
c5aa993b JM |
7770 | |
7771 | typedef enum | |
7772 | { | |
44feb3ce TT |
7773 | catch_fork_temporary, catch_vfork_temporary, |
7774 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
7775 | } |
7776 | catch_fork_kind; | |
7777 | ||
c906108c | 7778 | static void |
44feb3ce | 7779 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 7780 | { |
a6d9a66e | 7781 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 7782 | char *cond_string = NULL; |
44feb3ce TT |
7783 | catch_fork_kind fork_kind; |
7784 | int tempflag; | |
7785 | ||
7786 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
7787 | tempflag = (fork_kind == catch_fork_temporary | |
7788 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 7789 | |
44feb3ce TT |
7790 | if (!arg) |
7791 | arg = ""; | |
c906108c | 7792 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 7793 | |
c906108c | 7794 | /* The allowed syntax is: |
c5aa993b JM |
7795 | catch [v]fork |
7796 | catch [v]fork if <cond> | |
7797 | ||
c906108c SS |
7798 | First, check if there's an if clause. */ |
7799 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 7800 | |
c906108c | 7801 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 7802 | error (_("Junk at end of arguments.")); |
c5aa993b | 7803 | |
c906108c SS |
7804 | /* If this target supports it, create a fork or vfork catchpoint |
7805 | and enable reporting of such events. */ | |
c5aa993b JM |
7806 | switch (fork_kind) |
7807 | { | |
44feb3ce TT |
7808 | case catch_fork_temporary: |
7809 | case catch_fork_permanent: | |
a6d9a66e | 7810 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 7811 | &catch_fork_breakpoint_ops); |
c906108c | 7812 | break; |
44feb3ce TT |
7813 | case catch_vfork_temporary: |
7814 | case catch_vfork_permanent: | |
a6d9a66e | 7815 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 7816 | &catch_vfork_breakpoint_ops); |
c906108c | 7817 | break; |
c5aa993b | 7818 | default: |
8a3fe4f8 | 7819 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 7820 | break; |
c5aa993b | 7821 | } |
c906108c SS |
7822 | } |
7823 | ||
7824 | static void | |
44feb3ce | 7825 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 7826 | { |
a6d9a66e | 7827 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7828 | int tempflag; |
c5aa993b | 7829 | char *cond_string = NULL; |
c906108c | 7830 | |
44feb3ce TT |
7831 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7832 | ||
7833 | if (!arg) | |
7834 | arg = ""; | |
c906108c SS |
7835 | ep_skip_leading_whitespace (&arg); |
7836 | ||
7837 | /* The allowed syntax is: | |
c5aa993b JM |
7838 | catch exec |
7839 | catch exec if <cond> | |
c906108c SS |
7840 | |
7841 | First, check if there's an if clause. */ | |
7842 | cond_string = ep_parse_optional_if_clause (&arg); | |
7843 | ||
7844 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 7845 | error (_("Junk at end of arguments.")); |
c906108c SS |
7846 | |
7847 | /* If this target supports it, create an exec catchpoint | |
7848 | and enable reporting of such events. */ | |
a6d9a66e UW |
7849 | create_catchpoint (gdbarch, tempflag, cond_string, |
7850 | &catch_exec_breakpoint_ops); | |
c906108c | 7851 | } |
c5aa993b | 7852 | |
3086aeae DJ |
7853 | static enum print_stop_action |
7854 | print_exception_catchpoint (struct breakpoint *b) | |
7855 | { | |
ade92717 | 7856 | int bp_temp, bp_throw; |
3086aeae | 7857 | |
ade92717 | 7858 | annotate_catchpoint (b->number); |
3086aeae | 7859 | |
ade92717 AR |
7860 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
7861 | if (b->loc->address != b->loc->requested_address) | |
7862 | breakpoint_adjustment_warning (b->loc->requested_address, | |
7863 | b->loc->address, | |
7864 | b->number, 1); | |
df2b6d2d | 7865 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
7866 | ui_out_text (uiout, |
7867 | bp_temp ? "Temporary catchpoint " | |
7868 | : "Catchpoint "); | |
7869 | if (!ui_out_is_mi_like_p (uiout)) | |
7870 | ui_out_field_int (uiout, "bkptno", b->number); | |
7871 | ui_out_text (uiout, | |
c0b37c48 AR |
7872 | bp_throw ? " (exception thrown), " |
7873 | : " (exception caught), "); | |
ade92717 AR |
7874 | if (ui_out_is_mi_like_p (uiout)) |
7875 | { | |
7876 | ui_out_field_string (uiout, "reason", | |
7877 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
7878 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7879 | ui_out_field_int (uiout, "bkptno", b->number); | |
7880 | } | |
3086aeae DJ |
7881 | return PRINT_SRC_AND_LOC; |
7882 | } | |
7883 | ||
7884 | static void | |
a6d9a66e | 7885 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 7886 | { |
79a45b7d TT |
7887 | struct value_print_options opts; |
7888 | get_user_print_options (&opts); | |
7889 | if (opts.addressprint) | |
3086aeae DJ |
7890 | { |
7891 | annotate_field (4); | |
604133b5 AR |
7892 | if (b->loc == NULL || b->loc->shlib_disabled) |
7893 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
7894 | else | |
5af949e3 UW |
7895 | ui_out_field_core_addr (uiout, "addr", |
7896 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
7897 | } |
7898 | annotate_field (5); | |
604133b5 | 7899 | if (b->loc) |
a6d9a66e | 7900 | *last_loc = b->loc; |
3086aeae DJ |
7901 | if (strstr (b->addr_string, "throw") != NULL) |
7902 | ui_out_field_string (uiout, "what", "exception throw"); | |
7903 | else | |
7904 | ui_out_field_string (uiout, "what", "exception catch"); | |
7905 | } | |
7906 | ||
7907 | static void | |
7908 | print_mention_exception_catchpoint (struct breakpoint *b) | |
7909 | { | |
ade92717 AR |
7910 | int bp_temp; |
7911 | int bp_throw; | |
7912 | ||
df2b6d2d | 7913 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
7914 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
7915 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
7916 | : _("Catchpoint ")); | |
7917 | ui_out_field_int (uiout, "bkptno", b->number); | |
7918 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
7919 | : _(" (catch)")); | |
3086aeae DJ |
7920 | } |
7921 | ||
7922 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
7923 | NULL, /* insert */ |
7924 | NULL, /* remove */ | |
7925 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
7926 | print_exception_catchpoint, |
7927 | print_one_exception_catchpoint, | |
7928 | print_mention_exception_catchpoint | |
7929 | }; | |
7930 | ||
7931 | static int | |
7932 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
7933 | enum exception_event_kind ex_event, int from_tty) | |
7934 | { | |
604133b5 AR |
7935 | char *trigger_func_name; |
7936 | ||
3086aeae | 7937 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 7938 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 7939 | else |
604133b5 | 7940 | trigger_func_name = "__cxa_throw"; |
3086aeae | 7941 | |
a6d9a66e UW |
7942 | break_command_really (get_current_arch (), |
7943 | trigger_func_name, cond_string, -1, | |
604133b5 | 7944 | 0 /* condition and thread are valid. */, |
1042e4c0 | 7945 | tempflag, 0, 0, |
604133b5 AR |
7946 | 0, |
7947 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
7948 | &gnu_v3_exception_catchpoint_ops, from_tty, |
7949 | 1 /* enabled */); | |
3086aeae | 7950 | |
3086aeae DJ |
7951 | return 1; |
7952 | } | |
7953 | ||
c5aa993b | 7954 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
7955 | |
7956 | static void | |
fba45db2 KB |
7957 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
7958 | int tempflag, int from_tty) | |
c906108c | 7959 | { |
c5aa993b JM |
7960 | char *cond_string = NULL; |
7961 | struct symtab_and_line *sal = NULL; | |
7962 | ||
44feb3ce TT |
7963 | if (!arg) |
7964 | arg = ""; | |
c906108c | 7965 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 7966 | |
c906108c SS |
7967 | cond_string = ep_parse_optional_if_clause (&arg); |
7968 | ||
7969 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 7970 | error (_("Junk at end of arguments.")); |
c906108c | 7971 | |
059fb39f PM |
7972 | if (ex_event != EX_EVENT_THROW |
7973 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 7974 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 7975 | |
3086aeae DJ |
7976 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
7977 | return; | |
7978 | ||
8a3fe4f8 | 7979 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
7980 | } |
7981 | ||
44feb3ce TT |
7982 | /* Implementation of "catch catch" command. */ |
7983 | ||
7984 | static void | |
7985 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7986 | { | |
7987 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7988 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
7989 | } | |
7990 | ||
7991 | /* Implementation of "catch throw" command. */ | |
7992 | ||
7993 | static void | |
7994 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7995 | { | |
7996 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7997 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
7998 | } | |
7999 | ||
f7f9143b JB |
8000 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8001 | ||
8002 | static void | |
a6d9a66e UW |
8003 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8004 | struct symtab_and_line sal, | |
f7f9143b JB |
8005 | char *addr_string, |
8006 | char *exp_string, | |
8007 | char *cond_string, | |
8008 | struct expression *cond, | |
8009 | struct breakpoint_ops *ops, | |
8010 | int tempflag, | |
8011 | int from_tty) | |
8012 | { | |
8013 | struct breakpoint *b; | |
8014 | ||
8015 | if (from_tty) | |
8016 | { | |
5af949e3 UW |
8017 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8018 | if (!loc_gdbarch) | |
8019 | loc_gdbarch = gdbarch; | |
8020 | ||
6c95b8df PA |
8021 | describe_other_breakpoints (loc_gdbarch, |
8022 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8023 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8024 | version for exception catchpoints, because two catchpoints | |
8025 | used for different exception names will use the same address. | |
8026 | In this case, a "breakpoint ... also set at..." warning is | |
8027 | unproductive. Besides. the warning phrasing is also a bit | |
8028 | inapropriate, we should use the word catchpoint, and tell | |
8029 | the user what type of catchpoint it is. The above is good | |
8030 | enough for now, though. */ | |
8031 | } | |
8032 | ||
a6d9a66e | 8033 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8034 | set_breakpoint_count (breakpoint_count + 1); |
8035 | ||
8036 | b->enable_state = bp_enabled; | |
8037 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8038 | b->number = breakpoint_count; | |
8039 | b->ignore_count = 0; | |
511a6cd4 | 8040 | b->loc->cond = cond; |
f7f9143b JB |
8041 | b->addr_string = addr_string; |
8042 | b->language = language_ada; | |
8043 | b->cond_string = cond_string; | |
8044 | b->exp_string = exp_string; | |
8045 | b->thread = -1; | |
8046 | b->ops = ops; | |
f7f9143b JB |
8047 | |
8048 | mention (b); | |
b60e7edf | 8049 | update_global_location_list (1); |
f7f9143b JB |
8050 | } |
8051 | ||
8052 | /* Implement the "catch exception" command. */ | |
8053 | ||
8054 | static void | |
44feb3ce TT |
8055 | catch_ada_exception_command (char *arg, int from_tty, |
8056 | struct cmd_list_element *command) | |
f7f9143b | 8057 | { |
a6d9a66e | 8058 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8059 | int tempflag; |
f7f9143b JB |
8060 | struct symtab_and_line sal; |
8061 | enum bptype type; | |
8062 | char *addr_string = NULL; | |
8063 | char *exp_string = NULL; | |
8064 | char *cond_string = NULL; | |
8065 | struct expression *cond = NULL; | |
8066 | struct breakpoint_ops *ops = NULL; | |
8067 | ||
44feb3ce TT |
8068 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8069 | ||
8070 | if (!arg) | |
8071 | arg = ""; | |
f7f9143b JB |
8072 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
8073 | &cond_string, &cond, &ops); | |
a6d9a66e | 8074 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
8075 | cond_string, cond, ops, tempflag, |
8076 | from_tty); | |
8077 | } | |
8078 | ||
a96d9b2e SDJ |
8079 | /* Cleanup function for a syscall filter list. */ |
8080 | static void | |
8081 | clean_up_filters (void *arg) | |
8082 | { | |
8083 | VEC(int) *iter = *(VEC(int) **) arg; | |
8084 | VEC_free (int, iter); | |
8085 | } | |
8086 | ||
8087 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8088 | filter list, or NULL if no filtering is required. */ | |
8089 | static VEC(int) * | |
8090 | catch_syscall_split_args (char *arg) | |
8091 | { | |
8092 | VEC(int) *result = NULL; | |
8093 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8094 | ||
8095 | while (*arg != '\0') | |
8096 | { | |
8097 | int i, syscall_number; | |
8098 | char *endptr; | |
8099 | char cur_name[128]; | |
8100 | struct syscall s; | |
8101 | ||
8102 | /* Skip whitespace. */ | |
8103 | while (isspace (*arg)) | |
8104 | arg++; | |
8105 | ||
8106 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8107 | cur_name[i] = arg[i]; | |
8108 | cur_name[i] = '\0'; | |
8109 | arg += i; | |
8110 | ||
8111 | /* Check if the user provided a syscall name or a number. */ | |
8112 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8113 | if (*endptr == '\0') | |
bccd0dd2 | 8114 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8115 | else |
8116 | { | |
8117 | /* We have a name. Let's check if it's valid and convert it | |
8118 | to a number. */ | |
8119 | get_syscall_by_name (cur_name, &s); | |
8120 | ||
8121 | if (s.number == UNKNOWN_SYSCALL) | |
8122 | /* Here we have to issue an error instead of a warning, because | |
8123 | GDB cannot do anything useful if there's no syscall number to | |
8124 | be caught. */ | |
8125 | error (_("Unknown syscall name '%s'."), cur_name); | |
8126 | } | |
8127 | ||
8128 | /* Ok, it's valid. */ | |
8129 | VEC_safe_push (int, result, s.number); | |
8130 | } | |
8131 | ||
8132 | discard_cleanups (cleanup); | |
8133 | return result; | |
8134 | } | |
8135 | ||
8136 | /* Implement the "catch syscall" command. */ | |
8137 | ||
8138 | static void | |
8139 | catch_syscall_command_1 (char *arg, int from_tty, struct cmd_list_element *command) | |
8140 | { | |
8141 | int tempflag; | |
8142 | VEC(int) *filter; | |
8143 | struct syscall s; | |
8144 | struct gdbarch *gdbarch = get_current_arch (); | |
8145 | ||
8146 | /* Checking if the feature if supported. */ | |
8147 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8148 | error (_("The feature 'catch syscall' is not supported on \ | |
8149 | this architeture yet.")); | |
8150 | ||
8151 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8152 | ||
8153 | ep_skip_leading_whitespace (&arg); | |
8154 | ||
8155 | /* We need to do this first "dummy" translation in order | |
8156 | to get the syscall XML file loaded or, most important, | |
8157 | to display a warning to the user if there's no XML file | |
8158 | for his/her architecture. */ | |
8159 | get_syscall_by_number (0, &s); | |
8160 | ||
8161 | /* The allowed syntax is: | |
8162 | catch syscall | |
8163 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8164 | ||
8165 | Let's check if there's a syscall name. */ | |
8166 | ||
8167 | if (arg != NULL) | |
8168 | filter = catch_syscall_split_args (arg); | |
8169 | else | |
8170 | filter = NULL; | |
8171 | ||
8172 | create_syscall_event_catchpoint (tempflag, filter, | |
8173 | &catch_syscall_breakpoint_ops); | |
8174 | } | |
8175 | ||
f7f9143b JB |
8176 | /* Implement the "catch assert" command. */ |
8177 | ||
8178 | static void | |
44feb3ce | 8179 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8180 | { |
a6d9a66e | 8181 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8182 | int tempflag; |
f7f9143b JB |
8183 | struct symtab_and_line sal; |
8184 | char *addr_string = NULL; | |
8185 | struct breakpoint_ops *ops = NULL; | |
8186 | ||
44feb3ce TT |
8187 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8188 | ||
8189 | if (!arg) | |
8190 | arg = ""; | |
f7f9143b | 8191 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8192 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8193 | ops, tempflag, from_tty); | |
f7f9143b JB |
8194 | } |
8195 | ||
c906108c | 8196 | static void |
fba45db2 | 8197 | catch_command (char *arg, int from_tty) |
c906108c | 8198 | { |
44feb3ce | 8199 | error (_("Catch requires an event name.")); |
c906108c SS |
8200 | } |
8201 | \f | |
8202 | ||
8203 | static void | |
fba45db2 | 8204 | tcatch_command (char *arg, int from_tty) |
c906108c | 8205 | { |
44feb3ce | 8206 | error (_("Catch requires an event name.")); |
c906108c SS |
8207 | } |
8208 | ||
80f8a6eb | 8209 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8210 | |
8211 | static void | |
fba45db2 | 8212 | clear_command (char *arg, int from_tty) |
c906108c | 8213 | { |
d6e956e5 VP |
8214 | struct breakpoint *b; |
8215 | VEC(breakpoint_p) *found = 0; | |
8216 | int ix; | |
c906108c SS |
8217 | int default_match; |
8218 | struct symtabs_and_lines sals; | |
8219 | struct symtab_and_line sal; | |
c906108c SS |
8220 | int i; |
8221 | ||
8222 | if (arg) | |
8223 | { | |
8224 | sals = decode_line_spec (arg, 1); | |
8225 | default_match = 0; | |
8226 | } | |
8227 | else | |
8228 | { | |
c5aa993b | 8229 | sals.sals = (struct symtab_and_line *) |
c906108c | 8230 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8231 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8232 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8233 | sal.line = default_breakpoint_line; |
8234 | sal.symtab = default_breakpoint_symtab; | |
8235 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8236 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8237 | if (sal.symtab == 0) |
8a3fe4f8 | 8238 | error (_("No source file specified.")); |
c906108c SS |
8239 | |
8240 | sals.sals[0] = sal; | |
8241 | sals.nelts = 1; | |
8242 | ||
8243 | default_match = 1; | |
8244 | } | |
8245 | ||
ed0616c6 VP |
8246 | /* We don't call resolve_sal_pc here. That's not |
8247 | as bad as it seems, because all existing breakpoints | |
8248 | typically have both file/line and pc set. So, if | |
8249 | clear is given file/line, we can match this to existing | |
8250 | breakpoint without obtaining pc at all. | |
8251 | ||
8252 | We only support clearing given the address explicitly | |
8253 | present in breakpoint table. Say, we've set breakpoint | |
8254 | at file:line. There were several PC values for that file:line, | |
8255 | due to optimization, all in one block. | |
8256 | We've picked one PC value. If "clear" is issued with another | |
8257 | PC corresponding to the same file:line, the breakpoint won't | |
8258 | be cleared. We probably can still clear the breakpoint, but | |
8259 | since the other PC value is never presented to user, user | |
8260 | can only find it by guessing, and it does not seem important | |
8261 | to support that. */ | |
8262 | ||
c906108c | 8263 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8264 | to it. Do it in two passes, solely to preserve the current |
8265 | behavior that from_tty is forced true if we delete more than | |
8266 | one breakpoint. */ | |
c906108c | 8267 | |
80f8a6eb | 8268 | found = NULL; |
c906108c SS |
8269 | for (i = 0; i < sals.nelts; i++) |
8270 | { | |
8271 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8272 | If line given (pc == 0), clear all bpts on specified line. |
8273 | If defaulting, clear all bpts on default line | |
c906108c | 8274 | or at default pc. |
c5aa993b JM |
8275 | |
8276 | defaulting sal.pc != 0 tests to do | |
8277 | ||
8278 | 0 1 pc | |
8279 | 1 1 pc _and_ line | |
8280 | 0 0 line | |
8281 | 1 0 <can't happen> */ | |
c906108c SS |
8282 | |
8283 | sal = sals.sals[i]; | |
c906108c | 8284 | |
d6e956e5 VP |
8285 | /* Find all matching breakpoints and add them to |
8286 | 'found'. */ | |
8287 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8288 | { |
0d381245 | 8289 | int match = 0; |
80f8a6eb MS |
8290 | /* Are we going to delete b? */ |
8291 | if (b->type != bp_none | |
8292 | && b->type != bp_watchpoint | |
8293 | && b->type != bp_hardware_watchpoint | |
8294 | && b->type != bp_read_watchpoint | |
0d381245 VP |
8295 | && b->type != bp_access_watchpoint) |
8296 | { | |
8297 | struct bp_location *loc = b->loc; | |
8298 | for (; loc; loc = loc->next) | |
8299 | { | |
6c95b8df PA |
8300 | int pc_match = sal.pc |
8301 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8302 | && (loc->address == sal.pc) |
8303 | && (!section_is_overlay (loc->section) | |
8304 | || loc->section == sal.section); | |
8305 | int line_match = ((default_match || (0 == sal.pc)) | |
8306 | && b->source_file != NULL | |
8307 | && sal.symtab != NULL | |
6c95b8df | 8308 | && sal.pspace == loc->pspace |
0d381245 VP |
8309 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8310 | && b->line_number == sal.line); | |
8311 | if (pc_match || line_match) | |
8312 | { | |
8313 | match = 1; | |
8314 | break; | |
8315 | } | |
8316 | } | |
8317 | } | |
8318 | ||
8319 | if (match) | |
d6e956e5 | 8320 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8321 | } |
80f8a6eb MS |
8322 | } |
8323 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8324 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8325 | { |
8326 | if (arg) | |
8a3fe4f8 | 8327 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8328 | else |
8a3fe4f8 | 8329 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8330 | } |
c906108c | 8331 | |
d6e956e5 | 8332 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8333 | from_tty = 1; /* Always report if deleted more than one */ |
8334 | if (from_tty) | |
a3f17187 | 8335 | { |
d6e956e5 | 8336 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8337 | printf_unfiltered (_("Deleted breakpoint ")); |
8338 | else | |
8339 | printf_unfiltered (_("Deleted breakpoints ")); | |
8340 | } | |
80f8a6eb | 8341 | breakpoints_changed (); |
d6e956e5 VP |
8342 | |
8343 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8344 | { |
c5aa993b | 8345 | if (from_tty) |
d6e956e5 VP |
8346 | printf_unfiltered ("%d ", b->number); |
8347 | delete_breakpoint (b); | |
c906108c | 8348 | } |
80f8a6eb MS |
8349 | if (from_tty) |
8350 | putchar_unfiltered ('\n'); | |
c906108c SS |
8351 | } |
8352 | \f | |
8353 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8354 | all breakpoints that are marked for deletion, whether hit or not. | |
8355 | This is called after any breakpoint is hit, or after errors. */ | |
8356 | ||
8357 | void | |
fba45db2 | 8358 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8359 | { |
8360 | struct breakpoint *b, *temp; | |
8361 | ||
8362 | for (; bs; bs = bs->next) | |
20874c92 VP |
8363 | if (bs->breakpoint_at |
8364 | && bs->breakpoint_at->owner | |
8365 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 8366 | && bs->stop) |
4f8d1dc6 | 8367 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
8368 | |
8369 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8370 | { |
b5de0fa7 | 8371 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
8372 | delete_breakpoint (b); |
8373 | } | |
c906108c SS |
8374 | } |
8375 | ||
494cfb0f | 8376 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
8377 | Sort elements primarily by their ADDRESS (no matter what does |
8378 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
8379 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
8380 | is sorted stable way despite qsort being an instable algorithm. */ | |
8381 | ||
8382 | static int | |
494cfb0f | 8383 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 8384 | { |
494cfb0f JK |
8385 | struct bp_location *a = *(void **) ap; |
8386 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
8387 | int a_perm = a->owner->enable_state == bp_permanent; |
8388 | int b_perm = b->owner->enable_state == bp_permanent; | |
8389 | ||
8390 | if (a->address != b->address) | |
8391 | return (a->address > b->address) - (a->address < b->address); | |
8392 | ||
8393 | /* Sort permanent breakpoints first. */ | |
8394 | if (a_perm != b_perm) | |
8395 | return (a_perm < b_perm) - (a_perm > b_perm); | |
8396 | ||
8397 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
8398 | breakpoint can be sorted in arbitrary order. */ | |
8399 | ||
8400 | if (a->owner->number != b->owner->number) | |
8401 | return (a->owner->number > b->owner->number) | |
8402 | - (a->owner->number < b->owner->number); | |
8403 | ||
8404 | return (a > b) - (a < b); | |
8405 | } | |
8406 | ||
876fa593 JK |
8407 | /* Set bp_location_placed_address_before_address_max and |
8408 | bp_location_shadow_len_after_address_max according to the current content of | |
8409 | the bp_location array. */ | |
f7545552 TT |
8410 | |
8411 | static void | |
876fa593 | 8412 | bp_location_target_extensions_update (void) |
f7545552 | 8413 | { |
876fa593 JK |
8414 | struct bp_location *bl, **blp_tmp; |
8415 | ||
8416 | bp_location_placed_address_before_address_max = 0; | |
8417 | bp_location_shadow_len_after_address_max = 0; | |
8418 | ||
8419 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
8420 | { | |
8421 | CORE_ADDR start, end, addr; | |
8422 | ||
8423 | if (!bp_location_has_shadow (bl)) | |
8424 | continue; | |
8425 | ||
8426 | start = bl->target_info.placed_address; | |
8427 | end = start + bl->target_info.shadow_len; | |
8428 | ||
8429 | gdb_assert (bl->address >= start); | |
8430 | addr = bl->address - start; | |
8431 | if (addr > bp_location_placed_address_before_address_max) | |
8432 | bp_location_placed_address_before_address_max = addr; | |
8433 | ||
8434 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
8435 | ||
8436 | gdb_assert (bl->address < end); | |
8437 | addr = end - bl->address; | |
8438 | if (addr > bp_location_shadow_len_after_address_max) | |
8439 | bp_location_shadow_len_after_address_max = addr; | |
8440 | } | |
f7545552 TT |
8441 | } |
8442 | ||
4cd9bd08 | 8443 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
8444 | into the inferior, only remove already-inserted locations that no |
8445 | longer should be inserted. Functions that delete a breakpoint or | |
8446 | breakpoints should pass false, so that deleting a breakpoint | |
8447 | doesn't have the side effect of inserting the locations of other | |
8448 | breakpoints that are marked not-inserted, but should_be_inserted | |
8449 | returns true on them. | |
8450 | ||
8451 | This behaviour is useful is situations close to tear-down -- e.g., | |
8452 | after an exec, while the target still has execution, but breakpoint | |
8453 | shadows of the previous executable image should *NOT* be restored | |
8454 | to the new image; or before detaching, where the target still has | |
8455 | execution and wants to delete breakpoints from GDB's lists, and all | |
8456 | breakpoints had already been removed from the inferior. */ | |
8457 | ||
0d381245 | 8458 | static void |
b60e7edf | 8459 | update_global_location_list (int should_insert) |
0d381245 | 8460 | { |
74960c60 | 8461 | struct breakpoint *b; |
876fa593 | 8462 | struct bp_location **locp, *loc; |
f7545552 TT |
8463 | struct cleanup *cleanups; |
8464 | ||
2d134ed3 PA |
8465 | /* Used in the duplicates detection below. When iterating over all |
8466 | bp_locations, points to the first bp_location of a given address. | |
8467 | Breakpoints and watchpoints of different types are never | |
8468 | duplicates of each other. Keep one pointer for each type of | |
8469 | breakpoint/watchpoint, so we only need to loop over all locations | |
8470 | once. */ | |
8471 | struct bp_location *bp_loc_first; /* breakpoint */ | |
8472 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
8473 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
8474 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
8475 | |
8476 | /* Saved former bp_location array which we compare against the newly built | |
8477 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
8478 | struct bp_location **old_location, **old_locp; | |
8479 | unsigned old_location_count; | |
8480 | ||
8481 | old_location = bp_location; | |
8482 | old_location_count = bp_location_count; | |
8483 | bp_location = NULL; | |
8484 | bp_location_count = 0; | |
8485 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 8486 | |
74960c60 | 8487 | ALL_BREAKPOINTS (b) |
876fa593 JK |
8488 | for (loc = b->loc; loc; loc = loc->next) |
8489 | bp_location_count++; | |
8490 | ||
8491 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
8492 | locp = bp_location; | |
8493 | ALL_BREAKPOINTS (b) | |
8494 | for (loc = b->loc; loc; loc = loc->next) | |
8495 | *locp++ = loc; | |
8496 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 8497 | bp_location_compare); |
876fa593 JK |
8498 | |
8499 | bp_location_target_extensions_update (); | |
74960c60 VP |
8500 | |
8501 | /* Identify bp_location instances that are no longer present in the new | |
8502 | list, and therefore should be freed. Note that it's not necessary that | |
8503 | those locations should be removed from inferior -- if there's another | |
8504 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
8505 | we don't need to remove/insert the location. |
8506 | ||
8507 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
8508 | former bp_location array state respectively. */ | |
8509 | ||
8510 | locp = bp_location; | |
8511 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
8512 | old_locp++) | |
74960c60 | 8513 | { |
876fa593 | 8514 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 8515 | struct bp_location **loc2p; |
876fa593 JK |
8516 | |
8517 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 8518 | have to free it. */ |
c7d46a38 | 8519 | int found_object = 0; |
20874c92 VP |
8520 | /* Tells if the location should remain inserted in the target. */ |
8521 | int keep_in_target = 0; | |
8522 | int removed = 0; | |
876fa593 JK |
8523 | |
8524 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
8525 | at or being the one matching OLD_LOC. */ | |
8526 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 8527 | && (*locp)->address < old_loc->address) |
876fa593 | 8528 | locp++; |
c7d46a38 PA |
8529 | |
8530 | for (loc2p = locp; | |
8531 | (loc2p < bp_location + bp_location_count | |
8532 | && (*loc2p)->address == old_loc->address); | |
8533 | loc2p++) | |
8534 | { | |
8535 | if (*loc2p == old_loc) | |
8536 | { | |
8537 | found_object = 1; | |
8538 | break; | |
8539 | } | |
8540 | } | |
74960c60 VP |
8541 | |
8542 | /* If this location is no longer present, and inserted, look if there's | |
8543 | maybe a new location at the same address. If so, mark that one | |
8544 | inserted, and don't remove this one. This is needed so that we | |
8545 | don't have a time window where a breakpoint at certain location is not | |
8546 | inserted. */ | |
8547 | ||
876fa593 | 8548 | if (old_loc->inserted) |
0d381245 | 8549 | { |
74960c60 | 8550 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 8551 | |
876fa593 | 8552 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
8553 | { |
8554 | /* The location is still present in the location list, and still | |
8555 | should be inserted. Don't do anything. */ | |
20874c92 | 8556 | keep_in_target = 1; |
74960c60 VP |
8557 | } |
8558 | else | |
8559 | { | |
8560 | /* The location is either no longer present, or got disabled. | |
8561 | See if there's another location at the same address, in which | |
8562 | case we don't need to remove this one from the target. */ | |
876fa593 JK |
8563 | |
8564 | if (breakpoint_address_is_meaningful (old_loc->owner)) | |
8565 | { | |
876fa593 | 8566 | for (loc2p = locp; |
c7d46a38 PA |
8567 | (loc2p < bp_location + bp_location_count |
8568 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
8569 | loc2p++) |
8570 | { | |
8571 | struct bp_location *loc2 = *loc2p; | |
8572 | ||
2d134ed3 | 8573 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
8574 | { |
8575 | /* For the sake of should_be_inserted. | |
8576 | Duplicates check below will fix up this later. */ | |
8577 | loc2->duplicate = 0; | |
85d721b8 PA |
8578 | |
8579 | /* Read watchpoint locations are switched to | |
8580 | access watchpoints, if the former are not | |
8581 | supported, but the latter are. */ | |
8582 | if (is_hardware_watchpoint (old_loc->owner)) | |
8583 | { | |
8584 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
8585 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
8586 | } | |
8587 | ||
c7d46a38 PA |
8588 | if (loc2 != old_loc && should_be_inserted (loc2)) |
8589 | { | |
8590 | loc2->inserted = 1; | |
8591 | loc2->target_info = old_loc->target_info; | |
8592 | keep_in_target = 1; | |
8593 | break; | |
8594 | } | |
876fa593 JK |
8595 | } |
8596 | } | |
8597 | } | |
74960c60 VP |
8598 | } |
8599 | ||
20874c92 VP |
8600 | if (!keep_in_target) |
8601 | { | |
876fa593 | 8602 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
8603 | { |
8604 | /* This is just about all we can do. We could keep this | |
8605 | location on the global list, and try to remove it next | |
8606 | time, but there's no particular reason why we will | |
8607 | succeed next time. | |
8608 | ||
876fa593 | 8609 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
8610 | as delete_breakpoint frees the breakpoint only |
8611 | after calling us. */ | |
8612 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 8613 | old_loc->owner->number); |
20874c92 VP |
8614 | } |
8615 | removed = 1; | |
8616 | } | |
0d381245 | 8617 | } |
74960c60 VP |
8618 | |
8619 | if (!found_object) | |
1c5cfe86 | 8620 | { |
db82e815 PA |
8621 | if (removed && non_stop |
8622 | && breakpoint_address_is_meaningful (old_loc->owner) | |
8623 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 8624 | { |
db82e815 PA |
8625 | /* This location was removed from the target. In |
8626 | non-stop mode, a race condition is possible where | |
8627 | we've removed a breakpoint, but stop events for that | |
8628 | breakpoint are already queued and will arrive later. | |
8629 | We apply an heuristic to be able to distinguish such | |
8630 | SIGTRAPs from other random SIGTRAPs: we keep this | |
8631 | breakpoint location for a bit, and will retire it | |
8632 | after we see some number of events. The theory here | |
8633 | is that reporting of events should, "on the average", | |
8634 | be fair, so after a while we'll see events from all | |
8635 | threads that have anything of interest, and no longer | |
8636 | need to keep this breakpoint location around. We | |
8637 | don't hold locations forever so to reduce chances of | |
8638 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
8639 | SIGTRAP. | |
8640 | ||
8641 | The heuristic failing can be disastrous on | |
8642 | decr_pc_after_break targets. | |
8643 | ||
8644 | On decr_pc_after_break targets, like e.g., x86-linux, | |
8645 | if we fail to recognize a late breakpoint SIGTRAP, | |
8646 | because events_till_retirement has reached 0 too | |
8647 | soon, we'll fail to do the PC adjustment, and report | |
8648 | a random SIGTRAP to the user. When the user resumes | |
8649 | the inferior, it will most likely immediately crash | |
8650 | with SIGILL/SIGBUS/SEGSEGV, or worse, get silently | |
8651 | corrupted, because of being resumed e.g., in the | |
8652 | middle of a multi-byte instruction, or skipped a | |
8653 | one-byte instruction. This was actually seen happen | |
8654 | on native x86-linux, and should be less rare on | |
8655 | targets that do not support new thread events, like | |
8656 | remote, due to the heuristic depending on | |
8657 | thread_count. | |
8658 | ||
8659 | Mistaking a random SIGTRAP for a breakpoint trap | |
8660 | causes similar symptoms (PC adjustment applied when | |
8661 | it shouldn't), but then again, playing with SIGTRAPs | |
8662 | behind the debugger's back is asking for trouble. | |
8663 | ||
8664 | Since hardware watchpoint traps are always | |
8665 | distinguishable from other traps, so we don't need to | |
8666 | apply keep hardware watchpoint moribund locations | |
8667 | around. We simply always ignore hardware watchpoint | |
8668 | traps we can no longer explain. */ | |
8669 | ||
876fa593 JK |
8670 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
8671 | old_loc->owner = NULL; | |
20874c92 | 8672 | |
876fa593 | 8673 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
8674 | } |
8675 | else | |
876fa593 | 8676 | free_bp_location (old_loc); |
20874c92 | 8677 | } |
74960c60 | 8678 | } |
1c5cfe86 | 8679 | |
2d134ed3 PA |
8680 | /* Rescan breakpoints at the same address and section, marking the |
8681 | first one as "first" and any others as "duplicates". This is so | |
8682 | that the bpt instruction is only inserted once. If we have a | |
8683 | permanent breakpoint at the same place as BPT, make that one the | |
8684 | official one, and the rest as duplicates. Permanent breakpoints | |
8685 | are sorted first for the same address. | |
8686 | ||
8687 | Do the same for hardware watchpoints, but also considering the | |
8688 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 8689 | |
2d134ed3 PA |
8690 | bp_loc_first = NULL; |
8691 | wp_loc_first = NULL; | |
8692 | awp_loc_first = NULL; | |
8693 | rwp_loc_first = NULL; | |
876fa593 | 8694 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 8695 | { |
876fa593 | 8696 | struct breakpoint *b = loc->owner; |
2d134ed3 | 8697 | struct bp_location **loc_first_p; |
876fa593 JK |
8698 | |
8699 | if (b->enable_state == bp_disabled | |
8700 | || b->enable_state == bp_call_disabled | |
8701 | || b->enable_state == bp_startup_disabled | |
8702 | || !loc->enabled | |
8703 | || loc->shlib_disabled | |
15c3d785 PA |
8704 | || !breakpoint_address_is_meaningful (b) |
8705 | || tracepoint_type (b)) | |
876fa593 JK |
8706 | continue; |
8707 | ||
8708 | /* Permanent breakpoint should always be inserted. */ | |
8709 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
8710 | internal_error (__FILE__, __LINE__, | |
8711 | _("allegedly permanent breakpoint is not " | |
8712 | "actually inserted")); | |
8713 | ||
2d134ed3 PA |
8714 | if (b->type == bp_hardware_watchpoint) |
8715 | loc_first_p = &wp_loc_first; | |
8716 | else if (b->type == bp_read_watchpoint) | |
8717 | loc_first_p = &rwp_loc_first; | |
8718 | else if (b->type == bp_access_watchpoint) | |
8719 | loc_first_p = &awp_loc_first; | |
8720 | else | |
8721 | loc_first_p = &bp_loc_first; | |
8722 | ||
8723 | if (*loc_first_p == NULL | |
8724 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
8725 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 8726 | { |
2d134ed3 | 8727 | *loc_first_p = loc; |
876fa593 JK |
8728 | loc->duplicate = 0; |
8729 | continue; | |
8730 | } | |
8731 | ||
8732 | loc->duplicate = 1; | |
8733 | ||
2d134ed3 PA |
8734 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
8735 | && b->enable_state != bp_permanent) | |
876fa593 JK |
8736 | internal_error (__FILE__, __LINE__, |
8737 | _("another breakpoint was inserted on top of " | |
8738 | "a permanent breakpoint")); | |
0d381245 | 8739 | } |
74960c60 | 8740 | |
50c71eaf | 8741 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 8742 | && (have_live_inferiors () |
2567c7d9 | 8743 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 8744 | insert_breakpoint_locations (); |
f7545552 TT |
8745 | |
8746 | do_cleanups (cleanups); | |
74960c60 VP |
8747 | } |
8748 | ||
20874c92 VP |
8749 | void |
8750 | breakpoint_retire_moribund (void) | |
8751 | { | |
8752 | struct bp_location *loc; | |
8753 | int ix; | |
8754 | ||
8755 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
8756 | if (--(loc->events_till_retirement) == 0) | |
8757 | { | |
8758 | free_bp_location (loc); | |
8759 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
8760 | --ix; | |
8761 | } | |
8762 | } | |
8763 | ||
74960c60 | 8764 | static void |
b60e7edf | 8765 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
8766 | { |
8767 | struct gdb_exception e; | |
8768 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 8769 | update_global_location_list (inserting); |
0d381245 VP |
8770 | } |
8771 | ||
a474d7c2 PA |
8772 | /* Clear BPT from a BPS. */ |
8773 | static void | |
8774 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
8775 | { | |
8776 | bpstat bs; | |
8777 | for (bs = bps; bs; bs = bs->next) | |
8778 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
8779 | { | |
8780 | bs->breakpoint_at = NULL; | |
8781 | bs->old_val = NULL; | |
8782 | /* bs->commands will be freed later. */ | |
8783 | } | |
8784 | } | |
8785 | ||
8786 | /* Callback for iterate_over_threads. */ | |
8787 | static int | |
8788 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
8789 | { | |
8790 | struct breakpoint *bpt = data; | |
8791 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
8792 | return 0; | |
8793 | } | |
8794 | ||
53a5351d JM |
8795 | /* Delete a breakpoint and clean up all traces of it in the data |
8796 | structures. */ | |
c906108c SS |
8797 | |
8798 | void | |
fba45db2 | 8799 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8800 | { |
52f0bd74 | 8801 | struct breakpoint *b; |
74960c60 | 8802 | struct bp_location *loc, *next; |
c906108c | 8803 | |
8a3fe4f8 | 8804 | gdb_assert (bpt != NULL); |
c906108c SS |
8805 | |
8806 | /* Has this bp already been deleted? This can happen because multiple | |
8807 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
8808 | ||
8809 | One example of this happening is a watchpoint's scope bp. When the | |
8810 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
8811 | delete it. We also delete its scope bp. But the scope bp is marked | |
8812 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
8813 | checked for auto-deleting bp's, which are deleted. | |
8814 | ||
8815 | A real solution to this problem might involve reference counts in bp's, | |
8816 | and/or giving them pointers back to their referencing bpstat's, and | |
8817 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 8818 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
8819 | if (bpt->type == bp_none) |
8820 | return; | |
8821 | ||
e5a0a904 JK |
8822 | /* At least avoid this stale reference until the reference counting of |
8823 | breakpoints gets resolved. */ | |
8824 | if (bpt->related_breakpoint != NULL) | |
8825 | { | |
8826 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
8827 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
8828 | bpt->related_breakpoint->related_breakpoint = NULL; | |
8829 | bpt->related_breakpoint = NULL; | |
8830 | } | |
8831 | ||
383f836e | 8832 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 8833 | |
c906108c SS |
8834 | if (breakpoint_chain == bpt) |
8835 | breakpoint_chain = bpt->next; | |
8836 | ||
c906108c SS |
8837 | ALL_BREAKPOINTS (b) |
8838 | if (b->next == bpt) | |
c5aa993b JM |
8839 | { |
8840 | b->next = bpt->next; | |
8841 | break; | |
8842 | } | |
c906108c | 8843 | |
c906108c | 8844 | free_command_lines (&bpt->commands); |
c906108c | 8845 | if (bpt->cond_string != NULL) |
b8c9b27d | 8846 | xfree (bpt->cond_string); |
c906108c | 8847 | if (bpt->addr_string != NULL) |
b8c9b27d | 8848 | xfree (bpt->addr_string); |
c906108c | 8849 | if (bpt->exp != NULL) |
b8c9b27d | 8850 | xfree (bpt->exp); |
c906108c | 8851 | if (bpt->exp_string != NULL) |
b8c9b27d | 8852 | xfree (bpt->exp_string); |
c906108c SS |
8853 | if (bpt->val != NULL) |
8854 | value_free (bpt->val); | |
8855 | if (bpt->source_file != NULL) | |
b8c9b27d | 8856 | xfree (bpt->source_file); |
c906108c | 8857 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 8858 | xfree (bpt->exec_pathname); |
a96d9b2e | 8859 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c SS |
8860 | |
8861 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
8862 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
8863 | We just check stop_bpstat for now. Note that we cannot just |
8864 | remove bpstats pointing at bpt from the stop_bpstat list | |
8865 | entirely, as breakpoint commands are associated with the bpstat; | |
8866 | if we remove it here, then the later call to | |
8867 | bpstat_do_actions (&stop_bpstat); | |
8868 | in event-top.c won't do anything, and temporary breakpoints | |
8869 | with commands won't work. */ | |
a474d7c2 | 8870 | |
a474d7c2 | 8871 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
8872 | |
8873 | /* Now that breakpoint is removed from breakpoint | |
8874 | list, update the global location list. This | |
8875 | will remove locations that used to belong to | |
8876 | this breakpoint. Do this before freeing | |
8877 | the breakpoint itself, since remove_breakpoint | |
8878 | looks at location's owner. It might be better | |
8879 | design to have location completely self-contained, | |
8880 | but it's not the case now. */ | |
b60e7edf | 8881 | update_global_location_list (0); |
74960c60 VP |
8882 | |
8883 | ||
c906108c SS |
8884 | /* On the chance that someone will soon try again to delete this same |
8885 | bp, we mark it as deleted before freeing its storage. */ | |
8886 | bpt->type = bp_none; | |
8887 | ||
b8c9b27d | 8888 | xfree (bpt); |
c906108c SS |
8889 | } |
8890 | ||
4d6140d9 AC |
8891 | static void |
8892 | do_delete_breakpoint_cleanup (void *b) | |
8893 | { | |
8894 | delete_breakpoint (b); | |
8895 | } | |
8896 | ||
8897 | struct cleanup * | |
8898 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
8899 | { | |
8900 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
8901 | } | |
8902 | ||
c906108c | 8903 | void |
fba45db2 | 8904 | delete_command (char *arg, int from_tty) |
c906108c SS |
8905 | { |
8906 | struct breakpoint *b, *temp; | |
8907 | ||
ea9365bb TT |
8908 | dont_repeat (); |
8909 | ||
c906108c SS |
8910 | if (arg == 0) |
8911 | { | |
8912 | int breaks_to_delete = 0; | |
8913 | ||
8914 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
8915 | Do not delete internal or call-dummy breakpoints, these |
8916 | have to be deleted with an explicit breakpoint number argument. */ | |
8917 | ALL_BREAKPOINTS (b) | |
8918 | { | |
059fb39f PM |
8919 | if (b->type != bp_call_dummy |
8920 | && b->type != bp_shlib_event | |
4efc6507 | 8921 | && b->type != bp_jit_event |
059fb39f PM |
8922 | && b->type != bp_thread_event |
8923 | && b->type != bp_overlay_event | |
0fd8e87f | 8924 | && b->type != bp_longjmp_master |
059fb39f | 8925 | && b->number >= 0) |
973d738b DJ |
8926 | { |
8927 | breaks_to_delete = 1; | |
8928 | break; | |
8929 | } | |
c5aa993b | 8930 | } |
c906108c SS |
8931 | |
8932 | /* Ask user only if there are some breakpoints to delete. */ | |
8933 | if (!from_tty | |
e2e0b3e5 | 8934 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 8935 | { |
c5aa993b JM |
8936 | ALL_BREAKPOINTS_SAFE (b, temp) |
8937 | { | |
059fb39f PM |
8938 | if (b->type != bp_call_dummy |
8939 | && b->type != bp_shlib_event | |
8940 | && b->type != bp_thread_event | |
4efc6507 | 8941 | && b->type != bp_jit_event |
059fb39f | 8942 | && b->type != bp_overlay_event |
0fd8e87f | 8943 | && b->type != bp_longjmp_master |
059fb39f | 8944 | && b->number >= 0) |
c5aa993b JM |
8945 | delete_breakpoint (b); |
8946 | } | |
c906108c SS |
8947 | } |
8948 | } | |
8949 | else | |
8950 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8951 | } | |
8952 | ||
0d381245 VP |
8953 | static int |
8954 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 8955 | { |
0d381245 VP |
8956 | for (; loc; loc = loc->next) |
8957 | if (!loc->shlib_disabled) | |
8958 | return 0; | |
8959 | return 1; | |
fe3f5fa8 VP |
8960 | } |
8961 | ||
776592bf DE |
8962 | /* Subroutine of update_breakpoint_locations to simplify it. |
8963 | Return non-zero if multiple fns in list LOC have the same name. | |
8964 | Null names are ignored. */ | |
8965 | ||
8966 | static int | |
8967 | ambiguous_names_p (struct bp_location *loc) | |
8968 | { | |
8969 | struct bp_location *l; | |
8970 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
8971 | (int (*) (const void *, const void *)) streq, | |
8972 | NULL, xcalloc, xfree); | |
8973 | ||
8974 | for (l = loc; l != NULL; l = l->next) | |
8975 | { | |
8976 | const char **slot; | |
8977 | const char *name = l->function_name; | |
8978 | ||
8979 | /* Allow for some names to be NULL, ignore them. */ | |
8980 | if (name == NULL) | |
8981 | continue; | |
8982 | ||
8983 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
8984 | INSERT); | |
8985 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
8986 | NULL. */ | |
8987 | if (*slot != NULL) | |
8988 | { | |
8989 | htab_delete (htab); | |
8990 | return 1; | |
8991 | } | |
8992 | *slot = name; | |
8993 | } | |
8994 | ||
8995 | htab_delete (htab); | |
8996 | return 0; | |
8997 | } | |
8998 | ||
fe3f5fa8 | 8999 | static void |
0d381245 VP |
9000 | update_breakpoint_locations (struct breakpoint *b, |
9001 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
9002 | { |
9003 | int i; | |
9004 | char *s; | |
0d381245 VP |
9005 | struct bp_location *existing_locations = b->loc; |
9006 | ||
9007 | /* If there's no new locations, and all existing locations | |
9008 | are pending, don't do anything. This optimizes | |
9009 | the common case where all locations are in the same | |
9010 | shared library, that was unloaded. We'd like to | |
9011 | retain the location, so that when the library | |
9012 | is loaded again, we don't loose the enabled/disabled | |
9013 | status of the individual locations. */ | |
9014 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
9015 | return; |
9016 | ||
fe3f5fa8 VP |
9017 | b->loc = NULL; |
9018 | ||
0d381245 | 9019 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 9020 | { |
0d381245 | 9021 | struct bp_location *new_loc = |
39d61571 | 9022 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 9023 | |
0d381245 VP |
9024 | /* Reparse conditions, they might contain references to the |
9025 | old symtab. */ | |
9026 | if (b->cond_string != NULL) | |
9027 | { | |
9028 | struct gdb_exception e; | |
fe3f5fa8 | 9029 | |
0d381245 VP |
9030 | s = b->cond_string; |
9031 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9032 | { | |
9033 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
9034 | 0); | |
9035 | } | |
9036 | if (e.reason < 0) | |
9037 | { | |
9038 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
9039 | b->number, e.message); | |
9040 | new_loc->enabled = 0; | |
9041 | } | |
9042 | } | |
fe3f5fa8 | 9043 | |
0d381245 VP |
9044 | if (b->source_file != NULL) |
9045 | xfree (b->source_file); | |
9046 | if (sals.sals[i].symtab == NULL) | |
9047 | b->source_file = NULL; | |
9048 | else | |
1b36a34b | 9049 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 9050 | |
0d381245 VP |
9051 | if (b->line_number == 0) |
9052 | b->line_number = sals.sals[i].line; | |
9053 | } | |
fe3f5fa8 | 9054 | |
514f746b AR |
9055 | /* Update locations of permanent breakpoints. */ |
9056 | if (b->enable_state == bp_permanent) | |
9057 | make_breakpoint_permanent (b); | |
9058 | ||
0d381245 VP |
9059 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
9060 | { | |
9061 | struct bp_location *e = existing_locations; | |
776592bf DE |
9062 | /* If there are multiple breakpoints with the same function name, |
9063 | e.g. for inline functions, comparing function names won't work. | |
9064 | Instead compare pc addresses; this is just a heuristic as things | |
9065 | may have moved, but in practice it gives the correct answer | |
9066 | often enough until a better solution is found. */ | |
9067 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
9068 | ||
0d381245 VP |
9069 | for (; e; e = e->next) |
9070 | { | |
9071 | if (!e->enabled && e->function_name) | |
9072 | { | |
9073 | struct bp_location *l = b->loc; | |
776592bf DE |
9074 | if (have_ambiguous_names) |
9075 | { | |
9076 | for (; l; l = l->next) | |
6c95b8df PA |
9077 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
9078 | l->pspace->aspace, l->address)) | |
776592bf DE |
9079 | { |
9080 | l->enabled = 0; | |
9081 | break; | |
9082 | } | |
9083 | } | |
9084 | else | |
9085 | { | |
9086 | for (; l; l = l->next) | |
9087 | if (l->function_name | |
9088 | && strcmp (e->function_name, l->function_name) == 0) | |
9089 | { | |
9090 | l->enabled = 0; | |
9091 | break; | |
9092 | } | |
9093 | } | |
0d381245 VP |
9094 | } |
9095 | } | |
9096 | } | |
fe3f5fa8 | 9097 | |
b60e7edf | 9098 | update_global_location_list (1); |
fe3f5fa8 VP |
9099 | } |
9100 | ||
9101 | ||
c906108c SS |
9102 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9103 | The value we return ends up being the return value from catch_errors. | |
9104 | Unused in this case. */ | |
9105 | ||
9106 | static int | |
4efb68b1 | 9107 | breakpoint_re_set_one (void *bint) |
c906108c | 9108 | { |
53a5351d JM |
9109 | /* get past catch_errs */ |
9110 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
9111 | struct value *mark; |
9112 | int i; | |
fe3f5fa8 VP |
9113 | int not_found = 0; |
9114 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9115 | struct symtabs_and_lines sals = {0}; |
9116 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9117 | char *s; |
b5de0fa7 | 9118 | enum enable_state save_enable; |
fe3f5fa8 | 9119 | struct gdb_exception e; |
6c95b8df | 9120 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9121 | |
9122 | switch (b->type) | |
9123 | { | |
9124 | case bp_none: | |
8a3fe4f8 | 9125 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9126 | b->number); |
c906108c SS |
9127 | return 0; |
9128 | case bp_breakpoint: | |
9129 | case bp_hardware_breakpoint: | |
1042e4c0 | 9130 | case bp_tracepoint: |
7a697b8d | 9131 | case bp_fast_tracepoint: |
8bea4e01 UW |
9132 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9133 | if (b->enable_state == bp_startup_disabled) | |
9134 | return 0; | |
9135 | ||
c906108c SS |
9136 | if (b->addr_string == NULL) |
9137 | { | |
9138 | /* Anything without a string can't be re-set. */ | |
9139 | delete_breakpoint (b); | |
9140 | return 0; | |
9141 | } | |
c906108c SS |
9142 | |
9143 | set_language (b->language); | |
9144 | input_radix = b->input_radix; | |
9145 | s = b->addr_string; | |
6c95b8df PA |
9146 | |
9147 | save_current_space_and_thread (); | |
9148 | switch_to_program_space_and_thread (b->pspace); | |
9149 | ||
fe3f5fa8 | 9150 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9151 | { |
fe3f5fa8 VP |
9152 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9153 | not_found_ptr); | |
9154 | } | |
9155 | if (e.reason < 0) | |
9156 | { | |
9157 | int not_found_and_ok = 0; | |
9158 | /* For pending breakpoints, it's expected that parsing | |
9159 | will fail until the right shared library is loaded. | |
9160 | User has already told to create pending breakpoints and | |
9161 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9162 | state, then user already saw the message about that breakpoint | |
9163 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9164 | if (not_found |
9165 | && (b->condition_not_parsed | |
9166 | || (b->loc && b->loc->shlib_disabled) | |
9167 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9168 | not_found_and_ok = 1; |
9169 | ||
9170 | if (!not_found_and_ok) | |
c906108c | 9171 | { |
fe3f5fa8 VP |
9172 | /* We surely don't want to warn about the same breakpoint |
9173 | 10 times. One solution, implemented here, is disable | |
9174 | the breakpoint on error. Another solution would be to | |
9175 | have separate 'warning emitted' flag. Since this | |
9176 | happens only when a binary has changed, I don't know | |
9177 | which approach is better. */ | |
9178 | b->enable_state = bp_disabled; | |
9179 | throw_exception (e); | |
c906108c | 9180 | } |
fe3f5fa8 | 9181 | } |
c906108c | 9182 | |
6c95b8df | 9183 | if (!not_found) |
fe3f5fa8 | 9184 | { |
6c95b8df PA |
9185 | gdb_assert (sals.nelts == 1); |
9186 | ||
9187 | resolve_sal_pc (&sals.sals[0]); | |
9188 | if (b->condition_not_parsed && s && s[0]) | |
9189 | { | |
9190 | char *cond_string = 0; | |
9191 | int thread = -1; | |
9192 | int task = 0; | |
9193 | ||
9194 | find_condition_and_thread (s, sals.sals[0].pc, | |
9195 | &cond_string, &thread, &task); | |
9196 | if (cond_string) | |
9197 | b->cond_string = cond_string; | |
9198 | b->thread = thread; | |
9199 | b->task = task; | |
9200 | b->condition_not_parsed = 0; | |
9201 | } | |
9202 | ||
9203 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9204 | } |
6c95b8df PA |
9205 | |
9206 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9207 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9208 | break; |
9209 | ||
9210 | case bp_watchpoint: | |
9211 | case bp_hardware_watchpoint: | |
9212 | case bp_read_watchpoint: | |
9213 | case bp_access_watchpoint: | |
0b3de036 VP |
9214 | /* Watchpoint can be either on expression using entirely global variables, |
9215 | or it can be on local variables. | |
9216 | ||
9217 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9218 | across program restarts. Since they can use variables from shared | |
9219 | libraries, we need to reparse expression as libraries are loaded | |
9220 | and unloaded. | |
9221 | ||
9222 | Watchpoints on local variables can also change meaning as result | |
9223 | of solib event. For example, if a watchpoint uses both a local and | |
9224 | a global variables in expression, it's a local watchpoint, but | |
9225 | unloading of a shared library will make the expression invalid. | |
9226 | This is not a very common use case, but we still re-evaluate | |
9227 | expression, to avoid surprises to the user. | |
9228 | ||
9229 | Note that for local watchpoints, we re-evaluate it only if | |
9230 | watchpoints frame id is still valid. If it's not, it means | |
9231 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9232 | I'm not sure we'll ever be called in this case. | |
9233 | ||
9234 | If a local watchpoint's frame id is still valid, then | |
9235 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9236 | ||
9237 | Don't do anything about disabled watchpoints, since they will | |
9238 | be reevaluated again when enabled. */ | |
a5606eee | 9239 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9240 | break; |
c5aa993b JM |
9241 | /* We needn't really do anything to reset these, since the mask |
9242 | that requests them is unaffected by e.g., new libraries being | |
9243 | loaded. */ | |
ce78b96d | 9244 | case bp_catchpoint: |
c906108c | 9245 | break; |
c5aa993b | 9246 | |
c906108c | 9247 | default: |
a3f17187 | 9248 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9249 | /* fall through */ |
0fd8e87f UW |
9250 | /* Delete overlay event and longjmp master breakpoints; they will be |
9251 | reset later by breakpoint_re_set. */ | |
1900040c | 9252 | case bp_overlay_event: |
0fd8e87f | 9253 | case bp_longjmp_master: |
c906108c SS |
9254 | delete_breakpoint (b); |
9255 | break; | |
9256 | ||
c5aa993b JM |
9257 | /* This breakpoint is special, it's set up when the inferior |
9258 | starts and we really don't want to touch it. */ | |
c906108c SS |
9259 | case bp_shlib_event: |
9260 | ||
c4093a6a JM |
9261 | /* Like bp_shlib_event, this breakpoint type is special. |
9262 | Once it is set up, we do not want to touch it. */ | |
9263 | case bp_thread_event: | |
9264 | ||
c5aa993b JM |
9265 | /* Keep temporary breakpoints, which can be encountered when we step |
9266 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9267 | Otherwise these should have been blown away via the cleanup chain | |
9268 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9269 | case bp_until: |
9270 | case bp_finish: | |
9271 | case bp_watchpoint_scope: | |
9272 | case bp_call_dummy: | |
9273 | case bp_step_resume: | |
611c83ae PA |
9274 | case bp_longjmp: |
9275 | case bp_longjmp_resume: | |
4efc6507 | 9276 | case bp_jit_event: |
c906108c SS |
9277 | break; |
9278 | } | |
9279 | ||
6c95b8df | 9280 | do_cleanups (cleanups); |
c906108c SS |
9281 | return 0; |
9282 | } | |
9283 | ||
69de3c6a | 9284 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9285 | void |
69de3c6a | 9286 | breakpoint_re_set (void) |
c906108c SS |
9287 | { |
9288 | struct breakpoint *b, *temp; | |
9289 | enum language save_language; | |
9290 | int save_input_radix; | |
6c95b8df | 9291 | struct cleanup *old_chain; |
c5aa993b | 9292 | |
c906108c SS |
9293 | save_language = current_language->la_language; |
9294 | save_input_radix = input_radix; | |
6c95b8df PA |
9295 | old_chain = save_current_program_space (); |
9296 | ||
c906108c | 9297 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9298 | { |
53a5351d | 9299 | /* Format possible error msg */ |
fe3f5fa8 | 9300 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9301 | b->number); |
9302 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9303 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9304 | do_cleanups (cleanups); |
c5aa993b | 9305 | } |
c906108c SS |
9306 | set_language (save_language); |
9307 | input_radix = save_input_radix; | |
e62c965a | 9308 | |
0756c555 | 9309 | jit_breakpoint_re_set (); |
4efc6507 | 9310 | |
6c95b8df PA |
9311 | do_cleanups (old_chain); |
9312 | ||
69de3c6a | 9313 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9314 | create_longjmp_master_breakpoint ("longjmp"); |
9315 | create_longjmp_master_breakpoint ("_longjmp"); | |
9316 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9317 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
9318 | } |
9319 | \f | |
c906108c SS |
9320 | /* Reset the thread number of this breakpoint: |
9321 | ||
9322 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9323 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9324 | void |
fba45db2 | 9325 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9326 | { |
9327 | if (b->thread != -1) | |
9328 | { | |
39f77062 KB |
9329 | if (in_thread_list (inferior_ptid)) |
9330 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9331 | |
9332 | /* We're being called after following a fork. The new fork is | |
9333 | selected as current, and unless this was a vfork will have a | |
9334 | different program space from the original thread. Reset that | |
9335 | as well. */ | |
9336 | b->loc->pspace = current_program_space; | |
c906108c SS |
9337 | } |
9338 | } | |
9339 | ||
03ac34d5 MS |
9340 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9341 | If from_tty is nonzero, it prints a message to that effect, | |
9342 | which ends with a period (no newline). */ | |
9343 | ||
c906108c | 9344 | void |
fba45db2 | 9345 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9346 | { |
52f0bd74 | 9347 | struct breakpoint *b; |
c906108c SS |
9348 | |
9349 | if (count < 0) | |
9350 | count = 0; | |
9351 | ||
9352 | ALL_BREAKPOINTS (b) | |
9353 | if (b->number == bptnum) | |
c5aa993b JM |
9354 | { |
9355 | b->ignore_count = count; | |
221ea385 KS |
9356 | if (from_tty) |
9357 | { | |
9358 | if (count == 0) | |
a3f17187 | 9359 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
9360 | bptnum); |
9361 | else if (count == 1) | |
a3f17187 | 9362 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
9363 | bptnum); |
9364 | else | |
a3f17187 | 9365 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
9366 | count, bptnum); |
9367 | } | |
c5aa993b | 9368 | breakpoints_changed (); |
383f836e | 9369 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
9370 | return; |
9371 | } | |
c906108c | 9372 | |
8a3fe4f8 | 9373 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
9374 | } |
9375 | ||
b2175913 MS |
9376 | void |
9377 | make_breakpoint_silent (struct breakpoint *b) | |
9378 | { | |
9379 | /* Silence the breakpoint. */ | |
9380 | b->silent = 1; | |
9381 | } | |
9382 | ||
c906108c SS |
9383 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
9384 | ||
9385 | static void | |
fba45db2 | 9386 | ignore_command (char *args, int from_tty) |
c906108c SS |
9387 | { |
9388 | char *p = args; | |
52f0bd74 | 9389 | int num; |
c906108c SS |
9390 | |
9391 | if (p == 0) | |
e2e0b3e5 | 9392 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 9393 | |
c906108c | 9394 | num = get_number (&p); |
5c44784c | 9395 | if (num == 0) |
8a3fe4f8 | 9396 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 9397 | if (*p == 0) |
8a3fe4f8 | 9398 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
9399 | |
9400 | set_ignore_count (num, | |
9401 | longest_to_int (value_as_long (parse_and_eval (p))), | |
9402 | from_tty); | |
221ea385 KS |
9403 | if (from_tty) |
9404 | printf_filtered ("\n"); | |
c906108c SS |
9405 | } |
9406 | \f | |
9407 | /* Call FUNCTION on each of the breakpoints | |
9408 | whose numbers are given in ARGS. */ | |
9409 | ||
9410 | static void | |
831662b3 | 9411 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 9412 | { |
52f0bd74 | 9413 | char *p = args; |
c906108c | 9414 | char *p1; |
52f0bd74 AC |
9415 | int num; |
9416 | struct breakpoint *b, *tmp; | |
11cf8741 | 9417 | int match; |
c906108c SS |
9418 | |
9419 | if (p == 0) | |
e2e0b3e5 | 9420 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
9421 | |
9422 | while (*p) | |
9423 | { | |
11cf8741 | 9424 | match = 0; |
c906108c | 9425 | p1 = p; |
c5aa993b | 9426 | |
5c44784c JM |
9427 | num = get_number_or_range (&p1); |
9428 | if (num == 0) | |
c5aa993b | 9429 | { |
8a3fe4f8 | 9430 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
9431 | } |
9432 | else | |
9433 | { | |
9434 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
9435 | if (b->number == num) | |
9436 | { | |
9437 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 9438 | match = 1; |
5c44784c JM |
9439 | function (b); |
9440 | if (related_breakpoint) | |
9441 | function (related_breakpoint); | |
11cf8741 | 9442 | break; |
5c44784c | 9443 | } |
11cf8741 | 9444 | if (match == 0) |
a3f17187 | 9445 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 9446 | } |
c906108c SS |
9447 | p = p1; |
9448 | } | |
9449 | } | |
9450 | ||
0d381245 VP |
9451 | static struct bp_location * |
9452 | find_location_by_number (char *number) | |
9453 | { | |
9454 | char *dot = strchr (number, '.'); | |
9455 | char *p1; | |
9456 | int bp_num; | |
9457 | int loc_num; | |
9458 | struct breakpoint *b; | |
9459 | struct bp_location *loc; | |
9460 | ||
9461 | *dot = '\0'; | |
9462 | ||
9463 | p1 = number; | |
9464 | bp_num = get_number_or_range (&p1); | |
9465 | if (bp_num == 0) | |
9466 | error (_("Bad breakpoint number '%s'"), number); | |
9467 | ||
9468 | ALL_BREAKPOINTS (b) | |
9469 | if (b->number == bp_num) | |
9470 | { | |
9471 | break; | |
9472 | } | |
9473 | ||
9474 | if (!b || b->number != bp_num) | |
9475 | error (_("Bad breakpoint number '%s'"), number); | |
9476 | ||
9477 | p1 = dot+1; | |
9478 | loc_num = get_number_or_range (&p1); | |
9479 | if (loc_num == 0) | |
9480 | error (_("Bad breakpoint location number '%s'"), number); | |
9481 | ||
9482 | --loc_num; | |
9483 | loc = b->loc; | |
9484 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
9485 | ; | |
9486 | if (!loc) | |
9487 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
9488 | ||
9489 | return loc; | |
9490 | } | |
9491 | ||
9492 | ||
1900040c MS |
9493 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9494 | If from_tty is nonzero, it prints a message to that effect, | |
9495 | which ends with a period (no newline). */ | |
9496 | ||
c906108c | 9497 | void |
fba45db2 | 9498 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9499 | { |
9500 | /* Never disable a watchpoint scope breakpoint; we want to | |
9501 | hit them when we leave scope so we can delete both the | |
9502 | watchpoint and its scope breakpoint at that time. */ | |
9503 | if (bpt->type == bp_watchpoint_scope) | |
9504 | return; | |
9505 | ||
c2c6d25f | 9506 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 9507 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
9508 | return; |
9509 | ||
b5de0fa7 | 9510 | bpt->enable_state = bp_disabled; |
c906108c | 9511 | |
b60e7edf | 9512 | update_global_location_list (0); |
c906108c | 9513 | |
383f836e | 9514 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9515 | } |
9516 | ||
c906108c | 9517 | static void |
fba45db2 | 9518 | disable_command (char *args, int from_tty) |
c906108c | 9519 | { |
52f0bd74 | 9520 | struct breakpoint *bpt; |
c906108c SS |
9521 | if (args == 0) |
9522 | ALL_BREAKPOINTS (bpt) | |
9523 | switch (bpt->type) | |
c5aa993b JM |
9524 | { |
9525 | case bp_none: | |
8a3fe4f8 | 9526 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 9527 | bpt->number); |
c5aa993b JM |
9528 | continue; |
9529 | case bp_breakpoint: | |
1042e4c0 | 9530 | case bp_tracepoint: |
7a697b8d | 9531 | case bp_fast_tracepoint: |
ce78b96d | 9532 | case bp_catchpoint: |
c5aa993b JM |
9533 | case bp_hardware_breakpoint: |
9534 | case bp_watchpoint: | |
9535 | case bp_hardware_watchpoint: | |
9536 | case bp_read_watchpoint: | |
9537 | case bp_access_watchpoint: | |
9538 | disable_breakpoint (bpt); | |
9539 | default: | |
9540 | continue; | |
9541 | } | |
0d381245 VP |
9542 | else if (strchr (args, '.')) |
9543 | { | |
9544 | struct bp_location *loc = find_location_by_number (args); | |
9545 | if (loc) | |
9546 | loc->enabled = 0; | |
b60e7edf | 9547 | update_global_location_list (0); |
0d381245 | 9548 | } |
c906108c SS |
9549 | else |
9550 | map_breakpoint_numbers (args, disable_breakpoint); | |
9551 | } | |
9552 | ||
9553 | static void | |
fba45db2 | 9554 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 9555 | { |
c906108c SS |
9556 | int target_resources_ok, other_type_used; |
9557 | struct value *mark; | |
9558 | ||
9559 | if (bpt->type == bp_hardware_breakpoint) | |
9560 | { | |
9561 | int i; | |
c5aa993b | 9562 | i = hw_breakpoint_used_count (); |
53a5351d | 9563 | target_resources_ok = |
d92524f1 | 9564 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 9565 | i + 1, 0); |
c906108c | 9566 | if (target_resources_ok == 0) |
8a3fe4f8 | 9567 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 9568 | else if (target_resources_ok < 0) |
8a3fe4f8 | 9569 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
9570 | } |
9571 | ||
059fb39f PM |
9572 | if (bpt->type == bp_watchpoint |
9573 | || bpt->type == bp_hardware_watchpoint | |
9574 | || bpt->type == bp_read_watchpoint | |
9575 | || bpt->type == bp_access_watchpoint) | |
c906108c | 9576 | { |
dde02812 ES |
9577 | struct gdb_exception e; |
9578 | ||
9579 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 9580 | { |
dde02812 | 9581 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 9582 | } |
dde02812 | 9583 | if (e.reason < 0) |
c5aa993b | 9584 | { |
dde02812 ES |
9585 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
9586 | bpt->number); | |
9587 | return; | |
c5aa993b | 9588 | } |
c906108c | 9589 | } |
0101ce28 | 9590 | |
b4c291bb KH |
9591 | if (bpt->enable_state != bp_permanent) |
9592 | bpt->enable_state = bp_enabled; | |
9593 | bpt->disposition = disposition; | |
b60e7edf | 9594 | update_global_location_list (1); |
b4c291bb KH |
9595 | breakpoints_changed (); |
9596 | ||
383f836e | 9597 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9598 | } |
9599 | ||
fe3f5fa8 | 9600 | |
c906108c | 9601 | void |
fba45db2 | 9602 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9603 | { |
9604 | do_enable_breakpoint (bpt, bpt->disposition); | |
9605 | } | |
9606 | ||
9607 | /* The enable command enables the specified breakpoints (or all defined | |
9608 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 9609 | in stopping the inferior. */ |
c906108c | 9610 | |
c906108c | 9611 | static void |
fba45db2 | 9612 | enable_command (char *args, int from_tty) |
c906108c | 9613 | { |
52f0bd74 | 9614 | struct breakpoint *bpt; |
c906108c SS |
9615 | if (args == 0) |
9616 | ALL_BREAKPOINTS (bpt) | |
9617 | switch (bpt->type) | |
c5aa993b JM |
9618 | { |
9619 | case bp_none: | |
8a3fe4f8 | 9620 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 9621 | bpt->number); |
c5aa993b JM |
9622 | continue; |
9623 | case bp_breakpoint: | |
1042e4c0 | 9624 | case bp_tracepoint: |
7a697b8d | 9625 | case bp_fast_tracepoint: |
ce78b96d | 9626 | case bp_catchpoint: |
c5aa993b JM |
9627 | case bp_hardware_breakpoint: |
9628 | case bp_watchpoint: | |
9629 | case bp_hardware_watchpoint: | |
9630 | case bp_read_watchpoint: | |
9631 | case bp_access_watchpoint: | |
9632 | enable_breakpoint (bpt); | |
9633 | default: | |
9634 | continue; | |
9635 | } | |
0d381245 VP |
9636 | else if (strchr (args, '.')) |
9637 | { | |
9638 | struct bp_location *loc = find_location_by_number (args); | |
9639 | if (loc) | |
9640 | loc->enabled = 1; | |
b60e7edf | 9641 | update_global_location_list (1); |
0d381245 | 9642 | } |
c906108c SS |
9643 | else |
9644 | map_breakpoint_numbers (args, enable_breakpoint); | |
9645 | } | |
9646 | ||
9647 | static void | |
fba45db2 | 9648 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 9649 | { |
b5de0fa7 | 9650 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
9651 | } |
9652 | ||
c906108c | 9653 | static void |
fba45db2 | 9654 | enable_once_command (char *args, int from_tty) |
c906108c SS |
9655 | { |
9656 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
9657 | } | |
9658 | ||
9659 | static void | |
fba45db2 | 9660 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9661 | { |
b5de0fa7 | 9662 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
9663 | } |
9664 | ||
c906108c | 9665 | static void |
fba45db2 | 9666 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
9667 | { |
9668 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
9669 | } | |
9670 | \f | |
fa8d40ab JJ |
9671 | static void |
9672 | set_breakpoint_cmd (char *args, int from_tty) | |
9673 | { | |
9674 | } | |
9675 | ||
9676 | static void | |
9677 | show_breakpoint_cmd (char *args, int from_tty) | |
9678 | { | |
9679 | } | |
9680 | ||
1f3b5d1b PP |
9681 | /* Invalidate last known value of any hardware watchpoint if |
9682 | the memory which that value represents has been written to by | |
9683 | GDB itself. */ | |
9684 | ||
9685 | static void | |
9686 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
9687 | const bfd_byte *data) | |
9688 | { | |
9689 | struct breakpoint *bp; | |
9690 | ||
9691 | ALL_BREAKPOINTS (bp) | |
9692 | if (bp->enable_state == bp_enabled | |
9693 | && bp->type == bp_hardware_watchpoint | |
9694 | && bp->val_valid && bp->val) | |
9695 | { | |
9696 | struct bp_location *loc; | |
9697 | ||
9698 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
9699 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
9700 | && loc->address + loc->length > addr | |
9701 | && addr + len > loc->address) | |
9702 | { | |
9703 | value_free (bp->val); | |
9704 | bp->val = NULL; | |
9705 | bp->val_valid = 0; | |
9706 | } | |
9707 | } | |
9708 | } | |
9709 | ||
c906108c SS |
9710 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
9711 | ||
9712 | struct symtabs_and_lines | |
fba45db2 | 9713 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
9714 | { |
9715 | struct symtabs_and_lines sals; | |
9716 | if (string == 0) | |
8a3fe4f8 | 9717 | error (_("Empty line specification.")); |
c906108c SS |
9718 | if (default_breakpoint_valid) |
9719 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
9720 | default_breakpoint_symtab, |
9721 | default_breakpoint_line, | |
68219205 | 9722 | (char ***) NULL, NULL); |
c906108c SS |
9723 | else |
9724 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 9725 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 9726 | if (*string) |
8a3fe4f8 | 9727 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
9728 | return sals; |
9729 | } | |
8181d85f DJ |
9730 | |
9731 | /* Create and insert a raw software breakpoint at PC. Return an | |
9732 | identifier, which should be used to remove the breakpoint later. | |
9733 | In general, places which call this should be using something on the | |
9734 | breakpoint chain instead; this function should be eliminated | |
9735 | someday. */ | |
9736 | ||
9737 | void * | |
6c95b8df PA |
9738 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
9739 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
9740 | { |
9741 | struct bp_target_info *bp_tgt; | |
9742 | ||
6c95b8df | 9743 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 9744 | |
6c95b8df | 9745 | bp_tgt->placed_address_space = aspace; |
8181d85f | 9746 | bp_tgt->placed_address = pc; |
6c95b8df | 9747 | |
a6d9a66e | 9748 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
9749 | { |
9750 | /* Could not insert the breakpoint. */ | |
9751 | xfree (bp_tgt); | |
9752 | return NULL; | |
9753 | } | |
9754 | ||
9755 | return bp_tgt; | |
9756 | } | |
9757 | ||
9758 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
9759 | ||
9760 | int | |
a6d9a66e | 9761 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
9762 | { |
9763 | struct bp_target_info *bp_tgt = bp; | |
9764 | int ret; | |
9765 | ||
a6d9a66e | 9766 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
9767 | xfree (bp_tgt); |
9768 | ||
9769 | return ret; | |
9770 | } | |
9771 | ||
9772 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
9773 | ||
9774 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 9775 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
9776 | |
9777 | /* Create and insert a breakpoint for software single step. */ | |
9778 | ||
9779 | void | |
6c95b8df PA |
9780 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
9781 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
9782 | { |
9783 | void **bpt_p; | |
9784 | ||
9785 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
9786 | { |
9787 | bpt_p = &single_step_breakpoints[0]; | |
9788 | single_step_gdbarch[0] = gdbarch; | |
9789 | } | |
8181d85f DJ |
9790 | else |
9791 | { | |
9792 | gdb_assert (single_step_breakpoints[1] == NULL); | |
9793 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 9794 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
9795 | } |
9796 | ||
9797 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
9798 | to only create the breakpoints once, and actually put them on the | |
9799 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
9800 | adjust the addresses each time they were needed. Doing this requires | |
9801 | corresponding changes elsewhere where single step breakpoints are | |
9802 | handled, however. So, for now, we use this. */ | |
9803 | ||
6c95b8df | 9804 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 9805 | if (*bpt_p == NULL) |
5af949e3 UW |
9806 | error (_("Could not insert single-step breakpoint at %s"), |
9807 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
9808 | } |
9809 | ||
9810 | /* Remove and delete any breakpoints used for software single step. */ | |
9811 | ||
9812 | void | |
9813 | remove_single_step_breakpoints (void) | |
9814 | { | |
9815 | gdb_assert (single_step_breakpoints[0] != NULL); | |
9816 | ||
9817 | /* See insert_single_step_breakpoint for more about this deprecated | |
9818 | call. */ | |
a6d9a66e UW |
9819 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
9820 | single_step_breakpoints[0]); | |
9821 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
9822 | single_step_breakpoints[0] = NULL; |
9823 | ||
9824 | if (single_step_breakpoints[1] != NULL) | |
9825 | { | |
a6d9a66e UW |
9826 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
9827 | single_step_breakpoints[1]); | |
9828 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
9829 | single_step_breakpoints[1] = NULL; |
9830 | } | |
9831 | } | |
9832 | ||
1aafd4da UW |
9833 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
9834 | ||
9835 | static int | |
6c95b8df | 9836 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
1aafd4da UW |
9837 | { |
9838 | int i; | |
9839 | ||
9840 | for (i = 0; i < 2; i++) | |
9841 | { | |
9842 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
9843 | if (bp_tgt |
9844 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
9845 | bp_tgt->placed_address, | |
9846 | aspace, pc)) | |
1aafd4da UW |
9847 | return 1; |
9848 | } | |
9849 | ||
9850 | return 0; | |
9851 | } | |
9852 | ||
a96d9b2e SDJ |
9853 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
9854 | non-zero otherwise. */ | |
9855 | static int | |
9856 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
9857 | { | |
9858 | if (syscall_catchpoint_p (bp) | |
9859 | && bp->enable_state != bp_disabled | |
9860 | && bp->enable_state != bp_call_disabled) | |
9861 | return 1; | |
9862 | else | |
9863 | return 0; | |
9864 | } | |
9865 | ||
9866 | int | |
9867 | catch_syscall_enabled (void) | |
9868 | { | |
9869 | struct inferior *inf = current_inferior (); | |
9870 | ||
9871 | return inf->total_syscalls_count != 0; | |
9872 | } | |
9873 | ||
9874 | int | |
9875 | catching_syscall_number (int syscall_number) | |
9876 | { | |
9877 | struct breakpoint *bp; | |
9878 | ||
9879 | ALL_BREAKPOINTS (bp) | |
9880 | if (is_syscall_catchpoint_enabled (bp)) | |
9881 | { | |
9882 | if (bp->syscalls_to_be_caught) | |
9883 | { | |
9884 | int i, iter; | |
9885 | for (i = 0; | |
9886 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
9887 | i++) | |
9888 | if (syscall_number == iter) | |
9889 | return 1; | |
9890 | } | |
9891 | else | |
9892 | return 1; | |
9893 | } | |
9894 | ||
9895 | return 0; | |
9896 | } | |
9897 | ||
9898 | /* Complete syscall names. Used by "catch syscall". */ | |
9899 | static char ** | |
9900 | catch_syscall_completer (struct cmd_list_element *cmd, | |
9901 | char *text, char *word) | |
9902 | { | |
9903 | const char **list = get_syscall_names (); | |
9904 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
9905 | } | |
9906 | ||
1042e4c0 SS |
9907 | /* Tracepoint-specific operations. */ |
9908 | ||
9909 | /* Set tracepoint count to NUM. */ | |
9910 | static void | |
9911 | set_tracepoint_count (int num) | |
9912 | { | |
9913 | tracepoint_count = num; | |
4fa62494 | 9914 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
9915 | } |
9916 | ||
9917 | void | |
9918 | trace_command (char *arg, int from_tty) | |
9919 | { | |
fd9b8c24 PA |
9920 | if (break_command_really (get_current_arch (), |
9921 | arg, | |
9922 | NULL, 0, 1 /* parse arg */, | |
9923 | 0 /* tempflag */, 0 /* hardwareflag */, | |
9924 | 1 /* traceflag */, | |
9925 | 0 /* Ignore count */, | |
9926 | pending_break_support, | |
9927 | NULL, | |
9928 | from_tty, | |
9929 | 1 /* enabled */)) | |
9930 | set_tracepoint_count (breakpoint_count); | |
1042e4c0 SS |
9931 | } |
9932 | ||
7a697b8d SS |
9933 | void |
9934 | ftrace_command (char *arg, int from_tty) | |
9935 | { | |
fd9b8c24 PA |
9936 | if (break_command_really (get_current_arch (), |
9937 | arg, | |
9938 | NULL, 0, 1 /* parse arg */, | |
9939 | 0 /* tempflag */, 1 /* hardwareflag */, | |
9940 | 1 /* traceflag */, | |
9941 | 0 /* Ignore count */, | |
9942 | pending_break_support, | |
9943 | NULL, | |
9944 | from_tty, | |
9945 | 1 /* enabled */)) | |
9946 | set_tracepoint_count (breakpoint_count); | |
7a697b8d SS |
9947 | } |
9948 | ||
00bf0b85 SS |
9949 | /* Given information about a tracepoint as recorded on a target (which |
9950 | can be either a live system or a trace file), attempt to create an | |
9951 | equivalent GDB tracepoint. This is not a reliable process, since | |
9952 | the target does not necessarily have all the information used when | |
9953 | the tracepoint was originally defined. */ | |
9954 | ||
9955 | struct breakpoint * | |
9956 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 SS |
9957 | { |
9958 | char buf[100]; | |
9959 | struct breakpoint *tp; | |
fd9b8c24 | 9960 | |
00bf0b85 SS |
9961 | /* In the absence of a source location, fall back to raw address. */ |
9962 | sprintf (buf, "*%s", paddress (get_current_arch(), utp->addr)); | |
d5551862 | 9963 | |
fd9b8c24 PA |
9964 | if (!break_command_really (get_current_arch (), |
9965 | buf, | |
9966 | NULL, 0, 1 /* parse arg */, | |
9967 | 0 /* tempflag */, | |
9968 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
9969 | 1 /* traceflag */, | |
9970 | 0 /* Ignore count */, | |
9971 | pending_break_support, | |
9972 | NULL, | |
9973 | 0 /* from_tty */, | |
9974 | utp->enabled /* enabled */)) | |
9975 | return NULL; | |
9976 | ||
00bf0b85 SS |
9977 | set_tracepoint_count (breakpoint_count); |
9978 | ||
fd9b8c24 PA |
9979 | tp = get_tracepoint (tracepoint_count); |
9980 | gdb_assert (tp != NULL); | |
d5551862 | 9981 | |
00bf0b85 SS |
9982 | if (utp->pass > 0) |
9983 | { | |
9984 | sprintf (buf, "%d %d", utp->pass, tp->number); | |
9985 | ||
9986 | trace_pass_command (buf, 0); | |
9987 | } | |
9988 | ||
9989 | if (utp->cond) | |
9990 | { | |
9991 | printf_filtered ("Want to restore a condition\n"); | |
9992 | } | |
9993 | ||
9994 | if (utp->numactions > 0) | |
9995 | { | |
9996 | printf_filtered ("Want to restore action list\n"); | |
9997 | } | |
d5551862 | 9998 | |
00bf0b85 SS |
9999 | if (utp->num_step_actions > 0) |
10000 | { | |
10001 | printf_filtered ("Want to restore action list\n"); | |
10002 | } | |
10003 | ||
10004 | return tp; | |
10005 | } | |
10006 | ||
1042e4c0 SS |
10007 | /* Print information on tracepoint number TPNUM_EXP, or all if |
10008 | omitted. */ | |
10009 | ||
10010 | static void | |
10011 | tracepoints_info (char *tpnum_exp, int from_tty) | |
10012 | { | |
10013 | struct breakpoint *b; | |
10014 | int tps_to_list = 0; | |
10015 | ||
10016 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
10017 | if (tpnum_exp == 0) | |
10018 | { | |
10019 | ALL_TRACEPOINTS (b) | |
10020 | { | |
10021 | if (b->number >= 0) | |
10022 | { | |
10023 | tps_to_list = 1; | |
10024 | break; | |
10025 | } | |
10026 | } | |
10027 | if (!tps_to_list) | |
10028 | { | |
10029 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
10030 | return; | |
10031 | } | |
10032 | } | |
10033 | ||
10034 | /* Otherwise be the same as "info break". */ | |
10035 | breakpoints_info (tpnum_exp, from_tty); | |
10036 | } | |
10037 | ||
10038 | /* The 'enable trace' command enables tracepoints. | |
10039 | Not supported by all targets. */ | |
10040 | static void | |
10041 | enable_trace_command (char *args, int from_tty) | |
10042 | { | |
10043 | enable_command (args, from_tty); | |
10044 | } | |
10045 | ||
10046 | /* The 'disable trace' command disables tracepoints. | |
10047 | Not supported by all targets. */ | |
10048 | static void | |
10049 | disable_trace_command (char *args, int from_tty) | |
10050 | { | |
10051 | disable_command (args, from_tty); | |
10052 | } | |
10053 | ||
10054 | /* Remove a tracepoint (or all if no argument) */ | |
10055 | static void | |
10056 | delete_trace_command (char *arg, int from_tty) | |
10057 | { | |
10058 | struct breakpoint *b, *temp; | |
10059 | ||
10060 | dont_repeat (); | |
10061 | ||
10062 | if (arg == 0) | |
10063 | { | |
10064 | int breaks_to_delete = 0; | |
10065 | ||
10066 | /* Delete all breakpoints if no argument. | |
10067 | Do not delete internal or call-dummy breakpoints, these | |
10068 | have to be deleted with an explicit breakpoint number argument. */ | |
10069 | ALL_TRACEPOINTS (b) | |
10070 | { | |
10071 | if (b->number >= 0) | |
10072 | { | |
10073 | breaks_to_delete = 1; | |
10074 | break; | |
10075 | } | |
10076 | } | |
10077 | ||
10078 | /* Ask user only if there are some breakpoints to delete. */ | |
10079 | if (!from_tty | |
10080 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
10081 | { | |
10082 | ALL_BREAKPOINTS_SAFE (b, temp) | |
10083 | { | |
7a697b8d | 10084 | if (tracepoint_type (b) |
059fb39f | 10085 | && b->number >= 0) |
1042e4c0 SS |
10086 | delete_breakpoint (b); |
10087 | } | |
10088 | } | |
10089 | } | |
10090 | else | |
10091 | map_breakpoint_numbers (arg, delete_breakpoint); | |
10092 | } | |
10093 | ||
10094 | /* Set passcount for tracepoint. | |
10095 | ||
10096 | First command argument is passcount, second is tracepoint number. | |
10097 | If tracepoint number omitted, apply to most recently defined. | |
10098 | Also accepts special argument "all". */ | |
10099 | ||
10100 | static void | |
10101 | trace_pass_command (char *args, int from_tty) | |
10102 | { | |
10103 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10104 | unsigned int count; | |
10105 | int all = 0; | |
10106 | ||
10107 | if (args == 0 || *args == 0) | |
10108 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10109 | ||
10110 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10111 | ||
10112 | while (*args && isspace ((int) *args)) | |
10113 | args++; | |
10114 | ||
10115 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10116 | { | |
10117 | args += 3; /* Skip special argument "all". */ | |
10118 | all = 1; | |
10119 | if (*args) | |
10120 | error (_("Junk at end of arguments.")); | |
10121 | } | |
10122 | else | |
10123 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10124 | ||
10125 | do | |
10126 | { | |
10127 | if (t1) | |
10128 | { | |
10129 | ALL_TRACEPOINTS (t2) | |
10130 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10131 | { | |
10132 | t2->pass_count = count; | |
10133 | observer_notify_tracepoint_modified (t2->number); | |
10134 | if (from_tty) | |
10135 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10136 | t2->number, count); | |
10137 | } | |
10138 | if (! all && *args) | |
10139 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10140 | } | |
10141 | } | |
10142 | while (*args); | |
10143 | } | |
10144 | ||
10145 | struct breakpoint * | |
10146 | get_tracepoint (int num) | |
10147 | { | |
10148 | struct breakpoint *t; | |
10149 | ||
10150 | ALL_TRACEPOINTS (t) | |
10151 | if (t->number == num) | |
10152 | return t; | |
10153 | ||
10154 | return NULL; | |
10155 | } | |
10156 | ||
d5551862 SS |
10157 | /* Find the tracepoint with the given target-side number (which may be |
10158 | different from the tracepoint number after disconnecting and | |
10159 | reconnecting). */ | |
10160 | ||
10161 | struct breakpoint * | |
10162 | get_tracepoint_by_number_on_target (int num) | |
10163 | { | |
10164 | struct breakpoint *t; | |
10165 | ||
10166 | ALL_TRACEPOINTS (t) | |
10167 | if (t->number_on_target == num) | |
10168 | return t; | |
10169 | ||
10170 | return NULL; | |
10171 | } | |
10172 | ||
1042e4c0 SS |
10173 | /* Utility: parse a tracepoint number and look it up in the list. |
10174 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10175 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10176 | recent tracepoint (tracepoint_count) is returned. */ | |
10177 | struct breakpoint * | |
10178 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10179 | { | |
10180 | extern int tracepoint_count; | |
10181 | struct breakpoint *t; | |
10182 | int tpnum; | |
10183 | char *instring = arg == NULL ? NULL : *arg; | |
10184 | ||
10185 | if (arg == NULL || *arg == NULL || ! **arg) | |
10186 | { | |
10187 | if (optional_p) | |
10188 | tpnum = tracepoint_count; | |
10189 | else | |
10190 | error_no_arg (_("tracepoint number")); | |
10191 | } | |
10192 | else | |
10193 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10194 | ||
10195 | if (tpnum <= 0) | |
10196 | { | |
10197 | if (instring && *instring) | |
10198 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10199 | instring); | |
10200 | else | |
10201 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10202 | return NULL; | |
10203 | } | |
10204 | ||
10205 | ALL_TRACEPOINTS (t) | |
10206 | if (t->number == tpnum) | |
10207 | { | |
10208 | return t; | |
10209 | } | |
10210 | ||
10211 | /* FIXME: if we are in the middle of a range we don't want to give | |
10212 | a message. The current interface to get_number_or_range doesn't | |
10213 | allow us to discover this. */ | |
10214 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10215 | return NULL; | |
10216 | } | |
10217 | ||
10218 | /* save-tracepoints command */ | |
10219 | static void | |
10220 | tracepoint_save_command (char *args, int from_tty) | |
10221 | { | |
10222 | struct breakpoint *tp; | |
10223 | int any_tp = 0; | |
10224 | struct action_line *line; | |
10225 | FILE *fp; | |
10226 | char *i1 = " ", *i2 = " "; | |
10227 | char *indent, *actionline, *pathname; | |
10228 | char tmp[40]; | |
10229 | struct cleanup *cleanup; | |
10230 | ||
10231 | if (args == 0 || *args == 0) | |
10232 | error (_("Argument required (file name in which to save tracepoints)")); | |
10233 | ||
10234 | /* See if we have anything to save. */ | |
10235 | ALL_TRACEPOINTS (tp) | |
10236 | { | |
10237 | any_tp = 1; | |
10238 | break; | |
10239 | } | |
10240 | if (!any_tp) | |
10241 | { | |
10242 | warning (_("save-tracepoints: no tracepoints to save.")); | |
10243 | return; | |
10244 | } | |
10245 | ||
10246 | pathname = tilde_expand (args); | |
10247 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
10248 | fp = fopen (pathname, "w"); |
10249 | if (!fp) | |
1042e4c0 SS |
10250 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
10251 | args, safe_strerror (errno)); | |
10252 | make_cleanup_fclose (fp); | |
10253 | ||
10254 | ALL_TRACEPOINTS (tp) | |
10255 | { | |
10256 | if (tp->addr_string) | |
10257 | fprintf (fp, "trace %s\n", tp->addr_string); | |
10258 | else | |
10259 | { | |
10260 | sprintf_vma (tmp, tp->loc->address); | |
10261 | fprintf (fp, "trace *0x%s\n", tmp); | |
10262 | } | |
10263 | ||
10264 | if (tp->pass_count) | |
10265 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
10266 | ||
10267 | if (tp->actions) | |
10268 | { | |
10269 | fprintf (fp, " actions\n"); | |
10270 | indent = i1; | |
10271 | for (line = tp->actions; line; line = line->next) | |
10272 | { | |
10273 | struct cmd_list_element *cmd; | |
10274 | ||
10275 | QUIT; /* allow user to bail out with ^C */ | |
10276 | actionline = line->action; | |
10277 | while (isspace ((int) *actionline)) | |
10278 | actionline++; | |
10279 | ||
10280 | fprintf (fp, "%s%s\n", indent, actionline); | |
10281 | if (*actionline != '#') /* skip for comment lines */ | |
10282 | { | |
10283 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
10284 | if (cmd == 0) | |
10285 | error (_("Bad action list item: %s"), actionline); | |
10286 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
10287 | indent = i2; | |
10288 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
10289 | indent = i1; | |
10290 | } | |
10291 | } | |
10292 | } | |
10293 | } | |
10294 | do_cleanups (cleanup); | |
10295 | if (from_tty) | |
10296 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
10297 | return; | |
10298 | } | |
10299 | ||
10300 | /* Create a vector of all tracepoints. */ | |
10301 | ||
10302 | VEC(breakpoint_p) * | |
10303 | all_tracepoints () | |
10304 | { | |
10305 | VEC(breakpoint_p) *tp_vec = 0; | |
10306 | struct breakpoint *tp; | |
10307 | ||
10308 | ALL_TRACEPOINTS (tp) | |
10309 | { | |
10310 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
10311 | } | |
10312 | ||
10313 | return tp_vec; | |
10314 | } | |
10315 | ||
c906108c | 10316 | \f |
31e2b00f AS |
10317 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
10318 | It is defined as a macro to prevent duplication. | |
10319 | COMMAND should be a string constant containing the name of the command. */ | |
10320 | #define BREAK_ARGS_HELP(command) \ | |
10321 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
10322 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
10323 | If a line number is specified, break at start of code for that line.\n\ | |
10324 | If a function is specified, break at start of code for that function.\n\ | |
10325 | If an address is specified, break at that exact address.\n\ | |
10326 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
10327 | This is useful for breaking on return to a stack frame.\n\ | |
10328 | \n\ | |
10329 | THREADNUM is the number from \"info threads\".\n\ | |
10330 | CONDITION is a boolean expression.\n\ | |
10331 | \n\ | |
10332 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
10333 | \n\ | |
10334 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
10335 | ||
44feb3ce TT |
10336 | /* List of subcommands for "catch". */ |
10337 | static struct cmd_list_element *catch_cmdlist; | |
10338 | ||
10339 | /* List of subcommands for "tcatch". */ | |
10340 | static struct cmd_list_element *tcatch_cmdlist; | |
10341 | ||
10342 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
10343 | lists, and pass some additional user data to the command function. */ | |
10344 | static void | |
10345 | add_catch_command (char *name, char *docstring, | |
10346 | void (*sfunc) (char *args, int from_tty, | |
10347 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
10348 | char **(*completer) (struct cmd_list_element *cmd, |
10349 | char *text, char *word), | |
44feb3ce TT |
10350 | void *user_data_catch, |
10351 | void *user_data_tcatch) | |
10352 | { | |
10353 | struct cmd_list_element *command; | |
10354 | ||
10355 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10356 | &catch_cmdlist); | |
10357 | set_cmd_sfunc (command, sfunc); | |
10358 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 10359 | set_cmd_completer (command, completer); |
44feb3ce TT |
10360 | |
10361 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10362 | &tcatch_cmdlist); | |
10363 | set_cmd_sfunc (command, sfunc); | |
10364 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 10365 | set_cmd_completer (command, completer); |
44feb3ce TT |
10366 | } |
10367 | ||
6c95b8df PA |
10368 | static void |
10369 | clear_syscall_counts (int pid) | |
10370 | { | |
10371 | struct inferior *inf = find_inferior_pid (pid); | |
10372 | ||
10373 | inf->total_syscalls_count = 0; | |
10374 | inf->any_syscall_count = 0; | |
10375 | VEC_free (int, inf->syscalls_counts); | |
10376 | } | |
10377 | ||
c906108c | 10378 | void |
fba45db2 | 10379 | _initialize_breakpoint (void) |
c906108c | 10380 | { |
fa8d40ab JJ |
10381 | static struct cmd_list_element *breakpoint_set_cmdlist; |
10382 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
10383 | struct cmd_list_element *c; |
10384 | ||
84acb35a | 10385 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 10386 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 10387 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 10388 | |
c906108c SS |
10389 | breakpoint_chain = 0; |
10390 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
10391 | before a breakpoint is set. */ | |
10392 | breakpoint_count = 0; | |
10393 | ||
1042e4c0 SS |
10394 | tracepoint_count = 0; |
10395 | ||
1bedd215 AC |
10396 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
10397 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
10398 | Usage is `ignore N COUNT'.")); | |
c906108c | 10399 | if (xdb_commands) |
c5aa993b | 10400 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 10401 | |
1bedd215 AC |
10402 | add_com ("commands", class_breakpoint, commands_command, _("\ |
10403 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
10404 | Give breakpoint number as argument after \"commands\".\n\ |
10405 | With no argument, the targeted breakpoint is the last one set.\n\ | |
10406 | The commands themselves follow starting on the next line.\n\ | |
10407 | Type a line containing \"end\" to indicate the end of them.\n\ | |
10408 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 10409 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 10410 | |
1bedd215 AC |
10411 | add_com ("condition", class_breakpoint, condition_command, _("\ |
10412 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 10413 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 10414 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 10415 | |
1bedd215 | 10416 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 10417 | Set a temporary breakpoint.\n\ |
c906108c SS |
10418 | Like \"break\" except the breakpoint is only temporary,\n\ |
10419 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
10420 | by using \"enable delete\" on the breakpoint number.\n\ |
10421 | \n" | |
10422 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 10423 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10424 | |
1bedd215 | 10425 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 10426 | Set a hardware assisted breakpoint.\n\ |
c906108c | 10427 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
10428 | some target hardware may not have this support.\n\ |
10429 | \n" | |
10430 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 10431 | set_cmd_completer (c, location_completer); |
c906108c | 10432 | |
1bedd215 | 10433 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 10434 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 10435 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
10436 | so it will be deleted when hit.\n\ |
10437 | \n" | |
10438 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 10439 | set_cmd_completer (c, location_completer); |
c906108c | 10440 | |
1bedd215 AC |
10441 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
10442 | Enable some breakpoints.\n\ | |
c906108c SS |
10443 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10444 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10445 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10446 | With a subcommand you can enable temporarily."), |
c906108c SS |
10447 | &enablelist, "enable ", 1, &cmdlist); |
10448 | if (xdb_commands) | |
1bedd215 AC |
10449 | add_com ("ab", class_breakpoint, enable_command, _("\ |
10450 | Enable some breakpoints.\n\ | |
c906108c SS |
10451 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10452 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10453 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10454 | With a subcommand you can enable temporarily.")); |
c906108c SS |
10455 | |
10456 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
10457 | ||
1bedd215 AC |
10458 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
10459 | Enable some breakpoints.\n\ | |
c906108c SS |
10460 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10461 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10462 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 10463 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 10464 | |
1a966eab AC |
10465 | add_cmd ("once", no_class, enable_once_command, _("\ |
10466 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10467 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10468 | &enablebreaklist); |
10469 | ||
1a966eab AC |
10470 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10471 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10472 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10473 | &enablebreaklist); |
10474 | ||
1a966eab AC |
10475 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10476 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10477 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10478 | &enablelist); |
10479 | ||
1a966eab AC |
10480 | add_cmd ("once", no_class, enable_once_command, _("\ |
10481 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10482 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10483 | &enablelist); |
10484 | ||
1bedd215 AC |
10485 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
10486 | Disable some breakpoints.\n\ | |
c906108c SS |
10487 | Arguments are breakpoint numbers with spaces in between.\n\ |
10488 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10489 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
10490 | &disablelist, "disable ", 1, &cmdlist); |
10491 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
10492 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
10493 | if (xdb_commands) | |
1bedd215 AC |
10494 | add_com ("sb", class_breakpoint, disable_command, _("\ |
10495 | Disable some breakpoints.\n\ | |
c906108c SS |
10496 | Arguments are breakpoint numbers with spaces in between.\n\ |
10497 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10498 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 10499 | |
1a966eab AC |
10500 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
10501 | Disable some breakpoints.\n\ | |
c906108c SS |
10502 | Arguments are breakpoint numbers with spaces in between.\n\ |
10503 | To disable all breakpoints, give no argument.\n\ | |
10504 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 10505 | This command may be abbreviated \"disable\"."), |
c906108c SS |
10506 | &disablelist); |
10507 | ||
1bedd215 AC |
10508 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
10509 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10510 | Arguments are breakpoint numbers with spaces in between.\n\ |
10511 | To delete all breakpoints, give no argument.\n\ | |
10512 | \n\ | |
10513 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 10514 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
10515 | &deletelist, "delete ", 1, &cmdlist); |
10516 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 10517 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 10518 | if (xdb_commands) |
1bedd215 AC |
10519 | add_com ("db", class_breakpoint, delete_command, _("\ |
10520 | Delete some breakpoints.\n\ | |
c906108c | 10521 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 10522 | To delete all breakpoints, give no argument.\n")); |
c906108c | 10523 | |
1a966eab AC |
10524 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
10525 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10526 | Arguments are breakpoint numbers with spaces in between.\n\ |
10527 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 10528 | This command may be abbreviated \"delete\"."), |
c906108c SS |
10529 | &deletelist); |
10530 | ||
1bedd215 AC |
10531 | add_com ("clear", class_breakpoint, clear_command, _("\ |
10532 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
10533 | Argument may be line number, function name, or \"*\" and an address.\n\ |
10534 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
10535 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
10536 | If an address is specified, breakpoints at that address are cleared.\n\ |
10537 | \n\ | |
10538 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
10539 | is executing in.\n\ |
10540 | \n\ | |
1bedd215 | 10541 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 10542 | |
1bedd215 | 10543 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
10544 | Set breakpoint at specified line or function.\n" |
10545 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 10546 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10547 | |
c906108c SS |
10548 | add_com_alias ("b", "break", class_run, 1); |
10549 | add_com_alias ("br", "break", class_run, 1); | |
10550 | add_com_alias ("bre", "break", class_run, 1); | |
10551 | add_com_alias ("brea", "break", class_run, 1); | |
10552 | ||
7681d515 PM |
10553 | if (xdb_commands) |
10554 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
10555 | |
10556 | if (dbx_commands) | |
10557 | { | |
1bedd215 AC |
10558 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
10559 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
10560 | &stoplist, "stop ", 1, &cmdlist); |
10561 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 10562 | _("Break in function or address."), &stoplist); |
c5aa993b | 10563 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 10564 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
10565 | add_com ("status", class_info, breakpoints_info, _("\ |
10566 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10567 | The \"Type\" column indicates one of:\n\ |
10568 | \tbreakpoint - normal breakpoint\n\ | |
10569 | \twatchpoint - watchpoint\n\ | |
10570 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10571 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10572 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10573 | address and file/line number respectively.\n\ |
10574 | \n\ | |
10575 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10576 | are set to the address of the last breakpoint listed unless the command\n\ |
10577 | is prefixed with \"server \".\n\n\ | |
c906108c | 10578 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10579 | breakpoint set.")); |
c906108c SS |
10580 | } |
10581 | ||
1bedd215 AC |
10582 | add_info ("breakpoints", breakpoints_info, _("\ |
10583 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10584 | The \"Type\" column indicates one of:\n\ |
10585 | \tbreakpoint - normal breakpoint\n\ | |
10586 | \twatchpoint - watchpoint\n\ | |
10587 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10588 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10589 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10590 | address and file/line number respectively.\n\ |
10591 | \n\ | |
10592 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10593 | are set to the address of the last breakpoint listed unless the command\n\ |
10594 | is prefixed with \"server \".\n\n\ | |
c906108c | 10595 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10596 | breakpoint set.")); |
c906108c | 10597 | |
6b04bdb7 MS |
10598 | add_info_alias ("b", "breakpoints", 1); |
10599 | ||
c906108c | 10600 | if (xdb_commands) |
1bedd215 AC |
10601 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
10602 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10603 | The \"Type\" column indicates one of:\n\ |
10604 | \tbreakpoint - normal breakpoint\n\ | |
10605 | \twatchpoint - watchpoint\n\ | |
10606 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10607 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10608 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10609 | address and file/line number respectively.\n\ |
10610 | \n\ | |
10611 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10612 | are set to the address of the last breakpoint listed unless the command\n\ |
10613 | is prefixed with \"server \".\n\n\ | |
c906108c | 10614 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10615 | breakpoint set.")); |
c906108c | 10616 | |
1a966eab AC |
10617 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
10618 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10619 | The \"Type\" column indicates one of:\n\ |
10620 | \tbreakpoint - normal breakpoint\n\ | |
10621 | \twatchpoint - watchpoint\n\ | |
10622 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
10623 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
10624 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
10625 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
10626 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
10627 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
10628 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
10629 | address and file/line number respectively.\n\ |
10630 | \n\ | |
10631 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10632 | are set to the address of the last breakpoint listed unless the command\n\ |
10633 | is prefixed with \"server \".\n\n\ | |
c906108c | 10634 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 10635 | breakpoint set."), |
c906108c SS |
10636 | &maintenanceinfolist); |
10637 | ||
44feb3ce TT |
10638 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
10639 | Set catchpoints to catch events."), | |
10640 | &catch_cmdlist, "catch ", | |
10641 | 0/*allow-unknown*/, &cmdlist); | |
10642 | ||
10643 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
10644 | Set temporary catchpoints to catch events."), | |
10645 | &tcatch_cmdlist, "tcatch ", | |
10646 | 0/*allow-unknown*/, &cmdlist); | |
10647 | ||
10648 | /* Add catch and tcatch sub-commands. */ | |
10649 | add_catch_command ("catch", _("\ | |
10650 | Catch an exception, when caught.\n\ | |
10651 | With an argument, catch only exceptions with the given name."), | |
10652 | catch_catch_command, | |
a96d9b2e | 10653 | NULL, |
44feb3ce TT |
10654 | CATCH_PERMANENT, |
10655 | CATCH_TEMPORARY); | |
10656 | add_catch_command ("throw", _("\ | |
10657 | Catch an exception, when thrown.\n\ | |
10658 | With an argument, catch only exceptions with the given name."), | |
10659 | catch_throw_command, | |
a96d9b2e | 10660 | NULL, |
44feb3ce TT |
10661 | CATCH_PERMANENT, |
10662 | CATCH_TEMPORARY); | |
10663 | add_catch_command ("fork", _("Catch calls to fork."), | |
10664 | catch_fork_command_1, | |
a96d9b2e | 10665 | NULL, |
44feb3ce TT |
10666 | (void *) (uintptr_t) catch_fork_permanent, |
10667 | (void *) (uintptr_t) catch_fork_temporary); | |
10668 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
10669 | catch_fork_command_1, | |
a96d9b2e | 10670 | NULL, |
44feb3ce TT |
10671 | (void *) (uintptr_t) catch_vfork_permanent, |
10672 | (void *) (uintptr_t) catch_vfork_temporary); | |
10673 | add_catch_command ("exec", _("Catch calls to exec."), | |
10674 | catch_exec_command_1, | |
a96d9b2e SDJ |
10675 | NULL, |
10676 | CATCH_PERMANENT, | |
10677 | CATCH_TEMPORARY); | |
10678 | add_catch_command ("syscall", _("\ | |
10679 | Catch system calls by their names and/or numbers.\n\ | |
10680 | Arguments say which system calls to catch. If no arguments\n\ | |
10681 | are given, every system call will be caught.\n\ | |
10682 | Arguments, if given, should be one or more system call names\n\ | |
10683 | (if your system supports that), or system call numbers."), | |
10684 | catch_syscall_command_1, | |
10685 | catch_syscall_completer, | |
44feb3ce TT |
10686 | CATCH_PERMANENT, |
10687 | CATCH_TEMPORARY); | |
44feb3ce TT |
10688 | add_catch_command ("exception", _("\ |
10689 | Catch Ada exceptions, when raised.\n\ | |
10690 | With an argument, catch only exceptions with the given name."), | |
10691 | catch_ada_exception_command, | |
a96d9b2e | 10692 | NULL, |
44feb3ce TT |
10693 | CATCH_PERMANENT, |
10694 | CATCH_TEMPORARY); | |
10695 | add_catch_command ("assert", _("\ | |
10696 | Catch failed Ada assertions, when raised.\n\ | |
10697 | With an argument, catch only exceptions with the given name."), | |
10698 | catch_assert_command, | |
a96d9b2e | 10699 | NULL, |
44feb3ce TT |
10700 | CATCH_PERMANENT, |
10701 | CATCH_TEMPORARY); | |
c5aa993b | 10702 | |
1bedd215 AC |
10703 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
10704 | Set a watchpoint for an expression.\n\ | |
c906108c | 10705 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10706 | an expression changes.")); |
65d12d83 | 10707 | set_cmd_completer (c, expression_completer); |
c906108c | 10708 | |
1bedd215 AC |
10709 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
10710 | Set a read watchpoint for an expression.\n\ | |
c906108c | 10711 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10712 | an expression is read.")); |
65d12d83 | 10713 | set_cmd_completer (c, expression_completer); |
c906108c | 10714 | |
1bedd215 AC |
10715 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
10716 | Set a watchpoint for an expression.\n\ | |
c906108c | 10717 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10718 | an expression is either read or written.")); |
65d12d83 | 10719 | set_cmd_completer (c, expression_completer); |
c906108c SS |
10720 | |
10721 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 10722 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
10723 | |
10724 | ||
920d2a44 AC |
10725 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
10726 | respond to changes - contrary to the description. */ | |
85c07804 AC |
10727 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
10728 | &can_use_hw_watchpoints, _("\ | |
10729 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
10730 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
10731 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
10732 | such is available. (However, any hardware watchpoints that were\n\ | |
10733 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
10734 | hardware.)"), |
10735 | NULL, | |
920d2a44 | 10736 | show_can_use_hw_watchpoints, |
85c07804 | 10737 | &setlist, &showlist); |
c906108c SS |
10738 | |
10739 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 10740 | |
1042e4c0 SS |
10741 | /* Tracepoint manipulation commands. */ |
10742 | ||
10743 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
10744 | Set a tracepoint at specified line or function.\n\ | |
10745 | \n" | |
10746 | BREAK_ARGS_HELP ("trace") "\n\ | |
10747 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
10748 | set_cmd_completer (c, location_completer); | |
10749 | ||
10750 | add_com_alias ("tp", "trace", class_alias, 0); | |
10751 | add_com_alias ("tr", "trace", class_alias, 1); | |
10752 | add_com_alias ("tra", "trace", class_alias, 1); | |
10753 | add_com_alias ("trac", "trace", class_alias, 1); | |
10754 | ||
7a697b8d SS |
10755 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
10756 | Set a fast tracepoint at specified line or function.\n\ | |
10757 | \n" | |
10758 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
10759 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
10760 | set_cmd_completer (c, location_completer); | |
10761 | ||
1042e4c0 SS |
10762 | add_info ("tracepoints", tracepoints_info, _("\ |
10763 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
10764 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
10765 | last tracepoint set.")); | |
10766 | ||
10767 | add_info_alias ("tp", "tracepoints", 1); | |
10768 | ||
10769 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
10770 | Delete specified tracepoints.\n\ | |
10771 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10772 | No argument means delete all tracepoints."), | |
10773 | &deletelist); | |
10774 | ||
10775 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
10776 | Disable specified tracepoints.\n\ | |
10777 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10778 | No argument means disable all tracepoints."), | |
10779 | &disablelist); | |
10780 | deprecate_cmd (c, "disable"); | |
10781 | ||
10782 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
10783 | Enable specified tracepoints.\n\ | |
10784 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10785 | No argument means enable all tracepoints."), | |
10786 | &enablelist); | |
10787 | deprecate_cmd (c, "enable"); | |
10788 | ||
10789 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
10790 | Set the passcount for a tracepoint.\n\ | |
10791 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
10792 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
10793 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
10794 | ||
10795 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
10796 | Save current tracepoint definitions as a script.\n\ | |
10797 | Use the 'source' command in another debug session to restore them.")); | |
10798 | set_cmd_completer (c, filename_completer); | |
10799 | ||
1bedd215 | 10800 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
10801 | Breakpoint specific settings\n\ |
10802 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 10803 | pending breakpoint behavior"), |
fa8d40ab JJ |
10804 | &breakpoint_set_cmdlist, "set breakpoint ", |
10805 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 10806 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
10807 | Breakpoint specific settings\n\ |
10808 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 10809 | pending breakpoint behavior"), |
fa8d40ab JJ |
10810 | &breakpoint_show_cmdlist, "show breakpoint ", |
10811 | 0/*allow-unknown*/, &showlist); | |
10812 | ||
7915a72c AC |
10813 | add_setshow_auto_boolean_cmd ("pending", no_class, |
10814 | &pending_break_support, _("\ | |
10815 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
10816 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
10817 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
10818 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
10819 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 10820 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 10821 | NULL, |
920d2a44 | 10822 | show_pending_break_support, |
6e1d7d6c AC |
10823 | &breakpoint_set_cmdlist, |
10824 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
10825 | |
10826 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
10827 | |
10828 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
10829 | &automatic_hardware_breakpoints, _("\ | |
10830 | Set automatic usage of hardware breakpoints."), _("\ | |
10831 | Show automatic usage of hardware breakpoints."), _("\ | |
10832 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
10833 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
10834 | a warning will be emitted for such breakpoints."), | |
10835 | NULL, | |
10836 | show_automatic_hardware_breakpoints, | |
10837 | &breakpoint_set_cmdlist, | |
10838 | &breakpoint_show_cmdlist); | |
74960c60 | 10839 | |
33e5cbd6 PA |
10840 | add_setshow_enum_cmd ("always-inserted", class_support, |
10841 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
10842 | Set mode for inserting breakpoints."), _("\ |
10843 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
10844 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
10845 | resumed, and removed when execution stops. When this mode is on,\n\ | |
10846 | breakpoints are inserted immediately and removed only when the user\n\ | |
10847 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
10848 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
10849 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
10850 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
10851 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
10852 | NULL, |
10853 | &show_always_inserted_mode, | |
10854 | &breakpoint_set_cmdlist, | |
10855 | &breakpoint_show_cmdlist); | |
765dc015 VP |
10856 | |
10857 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
10858 | |
10859 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 10860 | } |