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 | ||
a14ed312 | 130 | static void breakpoints_info (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void breakpoint_1 (int, int); |
c906108c | 133 | |
89f9893c | 134 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 135 | |
4efb68b1 | 136 | static int breakpoint_cond_eval (void *); |
c906108c | 137 | |
4efb68b1 | 138 | static void cleanup_executing_breakpoints (void *); |
c906108c | 139 | |
a14ed312 | 140 | static void commands_command (char *, int); |
c906108c | 141 | |
a14ed312 | 142 | static void condition_command (char *, int); |
c906108c | 143 | |
a14ed312 | 144 | static int get_number_trailer (char **, int); |
c906108c | 145 | |
a14ed312 | 146 | void set_breakpoint_count (int); |
c906108c | 147 | |
c5aa993b JM |
148 | typedef enum |
149 | { | |
150 | mark_inserted, | |
151 | mark_uninserted | |
152 | } | |
153 | insertion_state_t; | |
c906108c | 154 | |
0bde7532 | 155 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 156 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 157 | |
a14ed312 | 158 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
159 | |
160 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 161 | |
4efb68b1 | 162 | static int watchpoint_check (void *); |
c906108c | 163 | |
a14ed312 | 164 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static int hw_breakpoint_used_count (void); |
c906108c | 167 | |
a14ed312 | 168 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 169 | |
a14ed312 | 170 | static void hbreak_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void thbreak_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void watch_command_1 (char *, int, int); |
c906108c | 175 | |
a14ed312 | 176 | static void rwatch_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void awatch_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 181 | |
a14ed312 | 182 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 191 | |
d85310f7 MS |
192 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
193 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 194 | |
a14ed312 | 195 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 196 | |
a14ed312 | 197 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 198 | |
6c95b8df PA |
199 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
200 | CORE_ADDR pc); | |
1aafd4da | 201 | |
fe3f5fa8 VP |
202 | static void free_bp_location (struct bp_location *loc); |
203 | ||
39d61571 | 204 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 205 | |
b60e7edf | 206 | static void update_global_location_list (int); |
a5606eee | 207 | |
b60e7edf | 208 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
209 | |
210 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
211 | ||
212 | static void insert_breakpoint_locations (void); | |
a5606eee | 213 | |
a96d9b2e SDJ |
214 | static int syscall_catchpoint_p (struct breakpoint *b); |
215 | ||
1042e4c0 SS |
216 | static void tracepoints_info (char *, int); |
217 | ||
218 | static void delete_trace_command (char *, int); | |
219 | ||
220 | static void enable_trace_command (char *, int); | |
221 | ||
222 | static void disable_trace_command (char *, int); | |
223 | ||
224 | static void trace_pass_command (char *, int); | |
225 | ||
3daf8fe5 JG |
226 | static void skip_prologue_sal (struct symtab_and_line *sal); |
227 | ||
228 | ||
f3b1572e PA |
229 | /* Flag indicating that a command has proceeded the inferior past the |
230 | current breakpoint. */ | |
231 | ||
232 | static int breakpoint_proceeded; | |
233 | ||
2cec12e5 AR |
234 | static const char * |
235 | bpdisp_text (enum bpdisp disp) | |
236 | { | |
237 | /* NOTE: the following values are a part of MI protocol and represent | |
238 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
239 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
240 | return bpdisps[(int) disp]; | |
241 | } | |
c906108c | 242 | |
2cec12e5 | 243 | /* Prototypes for exported functions. */ |
c906108c SS |
244 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
245 | if such is available. */ | |
246 | static int can_use_hw_watchpoints; | |
247 | ||
920d2a44 AC |
248 | static void |
249 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
250 | struct cmd_list_element *c, | |
251 | const char *value) | |
252 | { | |
253 | fprintf_filtered (file, _("\ | |
254 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
255 | value); | |
256 | } | |
257 | ||
fa8d40ab JJ |
258 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
259 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
260 | for unrecognized breakpoint locations. | |
261 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
262 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
263 | static void |
264 | show_pending_break_support (struct ui_file *file, int from_tty, | |
265 | struct cmd_list_element *c, | |
266 | const char *value) | |
267 | { | |
268 | fprintf_filtered (file, _("\ | |
269 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
270 | value); | |
271 | } | |
fa8d40ab | 272 | |
765dc015 VP |
273 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
274 | set with "break" but falling in read-only memory. | |
275 | If 0, gdb will warn about such breakpoints, but won't automatically | |
276 | use hardware breakpoints. */ | |
277 | static int automatic_hardware_breakpoints; | |
278 | static void | |
279 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
280 | struct cmd_list_element *c, | |
281 | const char *value) | |
282 | { | |
283 | fprintf_filtered (file, _("\ | |
284 | Automatic usage of hardware breakpoints is %s.\n"), | |
285 | value); | |
286 | } | |
287 | ||
33e5cbd6 PA |
288 | /* If on, gdb will keep breakpoints inserted even as inferior is |
289 | stopped, and immediately insert any new breakpoints. If off, gdb | |
290 | will insert breakpoints into inferior only when resuming it, and | |
291 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
292 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
293 | ||
294 | static const char always_inserted_auto[] = "auto"; | |
295 | static const char always_inserted_on[] = "on"; | |
296 | static const char always_inserted_off[] = "off"; | |
297 | static const char *always_inserted_enums[] = { | |
298 | always_inserted_auto, | |
299 | always_inserted_off, | |
300 | always_inserted_on, | |
301 | NULL | |
302 | }; | |
303 | static const char *always_inserted_mode = always_inserted_auto; | |
304 | static void | |
74960c60 | 305 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 306 | struct cmd_list_element *c, const char *value) |
74960c60 | 307 | { |
33e5cbd6 PA |
308 | if (always_inserted_mode == always_inserted_auto) |
309 | fprintf_filtered (file, _("\ | |
310 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
311 | value, | |
312 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
313 | else | |
314 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
315 | } |
316 | ||
33e5cbd6 PA |
317 | int |
318 | breakpoints_always_inserted_mode (void) | |
319 | { | |
320 | return (always_inserted_mode == always_inserted_on | |
321 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
322 | } | |
765dc015 | 323 | |
a14ed312 | 324 | void _initialize_breakpoint (void); |
c906108c | 325 | |
c906108c SS |
326 | /* Are we executing breakpoint commands? */ |
327 | static int executing_breakpoint_commands; | |
328 | ||
c02f5703 MS |
329 | /* Are overlay event breakpoints enabled? */ |
330 | static int overlay_events_enabled; | |
331 | ||
c906108c SS |
332 | /* Walk the following statement or block through all breakpoints. |
333 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
334 | breakpoint. */ | |
335 | ||
5c44784c | 336 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 337 | |
5c44784c JM |
338 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
339 | for (B = breakpoint_chain; \ | |
340 | B ? (TMP=B->next, 1): 0; \ | |
341 | B = TMP) | |
c906108c | 342 | |
876fa593 JK |
343 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
344 | provided so update_global_location_list must not be called while executing | |
345 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 346 | |
876fa593 JK |
347 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
348 | for (BP_TMP = bp_location; \ | |
349 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
350 | BP_TMP++) | |
7cc221ef | 351 | |
1042e4c0 SS |
352 | /* Iterator for tracepoints only. */ |
353 | ||
354 | #define ALL_TRACEPOINTS(B) \ | |
355 | for (B = breakpoint_chain; B; B = B->next) \ | |
7a697b8d | 356 | if (tracepoint_type (B)) |
1042e4c0 | 357 | |
7cc221ef | 358 | /* Chains of all breakpoints defined. */ |
c906108c SS |
359 | |
360 | struct breakpoint *breakpoint_chain; | |
361 | ||
876fa593 JK |
362 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
363 | ||
364 | static struct bp_location **bp_location; | |
365 | ||
366 | /* Number of elements of BP_LOCATION. */ | |
367 | ||
368 | static unsigned bp_location_count; | |
369 | ||
370 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
371 | for the current elements of BP_LOCATION which get a valid result from | |
372 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
373 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
374 | ||
375 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
376 | ||
377 | /* Maximum offset plus alignment between | |
378 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
379 | the current elements of BP_LOCATION which get a valid result from | |
380 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
381 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
382 | ||
383 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 384 | |
20874c92 | 385 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 386 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
387 | may still be reported by a target. */ |
388 | VEC(bp_location_p) *moribund_locations = NULL; | |
389 | ||
c906108c SS |
390 | /* Number of last breakpoint made. */ |
391 | ||
392 | int breakpoint_count; | |
393 | ||
1042e4c0 SS |
394 | /* Number of last tracepoint made. */ |
395 | ||
396 | int tracepoint_count; | |
397 | ||
468d015d JJ |
398 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
399 | static int | |
400 | breakpoint_enabled (struct breakpoint *b) | |
401 | { | |
0d381245 | 402 | return (b->enable_state == bp_enabled); |
468d015d JJ |
403 | } |
404 | ||
c906108c SS |
405 | /* Set breakpoint count to NUM. */ |
406 | ||
407 | void | |
fba45db2 | 408 | set_breakpoint_count (int num) |
c906108c SS |
409 | { |
410 | breakpoint_count = num; | |
4fa62494 | 411 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
412 | } |
413 | ||
414 | /* Used in run_command to zero the hit count when a new run starts. */ | |
415 | ||
416 | void | |
fba45db2 | 417 | clear_breakpoint_hit_counts (void) |
c906108c SS |
418 | { |
419 | struct breakpoint *b; | |
420 | ||
421 | ALL_BREAKPOINTS (b) | |
422 | b->hit_count = 0; | |
423 | } | |
424 | ||
7a697b8d SS |
425 | /* Encapsulate tests for different types of tracepoints. */ |
426 | ||
427 | static int | |
428 | tracepoint_type (const struct breakpoint *b) | |
429 | { | |
430 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); | |
431 | } | |
432 | ||
c906108c SS |
433 | /* Default address, symtab and line to put a breakpoint at |
434 | for "break" command with no arg. | |
435 | if default_breakpoint_valid is zero, the other three are | |
436 | not valid, and "break" with no arg is an error. | |
437 | ||
438 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
439 | ||
440 | int default_breakpoint_valid; | |
441 | CORE_ADDR default_breakpoint_address; | |
442 | struct symtab *default_breakpoint_symtab; | |
443 | int default_breakpoint_line; | |
6c95b8df PA |
444 | struct program_space *default_breakpoint_pspace; |
445 | ||
c906108c SS |
446 | \f |
447 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
448 | Advance *PP after the string and any trailing whitespace. | |
449 | ||
450 | Currently the string can either be a number or "$" followed by the name | |
451 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 452 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
453 | |
454 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
455 | |
456 | TRAILER is a character which can be found after the number; most | |
457 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 458 | static int |
fba45db2 | 459 | get_number_trailer (char **pp, int trailer) |
c906108c | 460 | { |
5c44784c | 461 | int retval = 0; /* default */ |
c906108c SS |
462 | char *p = *pp; |
463 | ||
464 | if (p == NULL) | |
465 | /* Empty line means refer to the last breakpoint. */ | |
466 | return breakpoint_count; | |
467 | else if (*p == '$') | |
468 | { | |
469 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 470 | to pass to lookup_internalvar(). */ |
c906108c SS |
471 | char *varname; |
472 | char *start = ++p; | |
4fa62494 | 473 | LONGEST val; |
c906108c SS |
474 | |
475 | while (isalnum (*p) || *p == '_') | |
476 | p++; | |
477 | varname = (char *) alloca (p - start + 1); | |
478 | strncpy (varname, start, p - start); | |
479 | varname[p - start] = '\0'; | |
4fa62494 UW |
480 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
481 | retval = (int) val; | |
5c44784c JM |
482 | else |
483 | { | |
a3f17187 | 484 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
485 | retval = 0; |
486 | } | |
c906108c SS |
487 | } |
488 | else | |
489 | { | |
490 | if (*p == '-') | |
491 | ++p; | |
492 | while (*p >= '0' && *p <= '9') | |
493 | ++p; | |
494 | if (p == *pp) | |
495 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
496 | { |
497 | /* Skip non-numeric token */ | |
498 | while (*p && !isspace((int) *p)) | |
499 | ++p; | |
500 | /* Return zero, which caller must interpret as error. */ | |
501 | retval = 0; | |
502 | } | |
503 | else | |
504 | retval = atoi (*pp); | |
505 | } | |
506 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
507 | { | |
508 | /* Trailing junk: return 0 and let caller print error msg. */ | |
509 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
510 | ++p; | |
511 | retval = 0; | |
c906108c | 512 | } |
c906108c SS |
513 | while (isspace (*p)) |
514 | p++; | |
515 | *pp = p; | |
516 | return retval; | |
517 | } | |
5c44784c | 518 | |
11cf8741 | 519 | |
5c44784c JM |
520 | /* Like get_number_trailer, but don't allow a trailer. */ |
521 | int | |
fba45db2 | 522 | get_number (char **pp) |
5c44784c JM |
523 | { |
524 | return get_number_trailer (pp, '\0'); | |
525 | } | |
526 | ||
527 | /* Parse a number or a range. | |
528 | * A number will be of the form handled by get_number. | |
529 | * A range will be of the form <number1> - <number2>, and | |
530 | * will represent all the integers between number1 and number2, | |
531 | * inclusive. | |
532 | * | |
533 | * While processing a range, this fuction is called iteratively; | |
534 | * At each call it will return the next value in the range. | |
535 | * | |
536 | * At the beginning of parsing a range, the char pointer PP will | |
537 | * be advanced past <number1> and left pointing at the '-' token. | |
538 | * Subsequent calls will not advance the pointer until the range | |
539 | * is completed. The call that completes the range will advance | |
540 | * pointer PP past <number2>. | |
541 | */ | |
542 | ||
543 | int | |
fba45db2 | 544 | get_number_or_range (char **pp) |
5c44784c JM |
545 | { |
546 | static int last_retval, end_value; | |
547 | static char *end_ptr; | |
548 | static int in_range = 0; | |
549 | ||
550 | if (**pp != '-') | |
551 | { | |
552 | /* Default case: pp is pointing either to a solo number, | |
553 | or to the first number of a range. */ | |
554 | last_retval = get_number_trailer (pp, '-'); | |
555 | if (**pp == '-') | |
556 | { | |
557 | char **temp; | |
558 | ||
559 | /* This is the start of a range (<number1> - <number2>). | |
560 | Skip the '-', parse and remember the second number, | |
561 | and also remember the end of the final token. */ | |
562 | ||
563 | temp = &end_ptr; | |
564 | end_ptr = *pp + 1; | |
565 | while (isspace ((int) *end_ptr)) | |
566 | end_ptr++; /* skip white space */ | |
567 | end_value = get_number (temp); | |
568 | if (end_value < last_retval) | |
569 | { | |
8a3fe4f8 | 570 | error (_("inverted range")); |
5c44784c JM |
571 | } |
572 | else if (end_value == last_retval) | |
573 | { | |
574 | /* degenerate range (number1 == number2). Advance the | |
575 | token pointer so that the range will be treated as a | |
576 | single number. */ | |
577 | *pp = end_ptr; | |
578 | } | |
579 | else | |
580 | in_range = 1; | |
581 | } | |
582 | } | |
583 | else if (! in_range) | |
8a3fe4f8 | 584 | error (_("negative value")); |
5c44784c JM |
585 | else |
586 | { | |
587 | /* pp points to the '-' that betokens a range. All | |
588 | number-parsing has already been done. Return the next | |
589 | integer value (one greater than the saved previous value). | |
590 | Do not advance the token pointer 'pp' until the end of range | |
591 | is reached. */ | |
592 | ||
593 | if (++last_retval == end_value) | |
594 | { | |
595 | /* End of range reached; advance token pointer. */ | |
596 | *pp = end_ptr; | |
597 | in_range = 0; | |
598 | } | |
599 | } | |
600 | return last_retval; | |
601 | } | |
602 | ||
48cb2d85 VP |
603 | /* Return the breakpoint with the specified number, or NULL |
604 | if the number does not refer to an existing breakpoint. */ | |
605 | ||
606 | struct breakpoint * | |
607 | get_breakpoint (int num) | |
608 | { | |
609 | struct breakpoint *b; | |
610 | ||
611 | ALL_BREAKPOINTS (b) | |
612 | if (b->number == num) | |
613 | return b; | |
614 | ||
615 | return NULL; | |
616 | } | |
5c44784c | 617 | |
c906108c SS |
618 | \f |
619 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
620 | ||
621 | static void | |
fba45db2 | 622 | condition_command (char *arg, int from_tty) |
c906108c | 623 | { |
52f0bd74 | 624 | struct breakpoint *b; |
c906108c | 625 | char *p; |
52f0bd74 | 626 | int bnum; |
c906108c SS |
627 | |
628 | if (arg == 0) | |
e2e0b3e5 | 629 | error_no_arg (_("breakpoint number")); |
c906108c SS |
630 | |
631 | p = arg; | |
632 | bnum = get_number (&p); | |
5c44784c | 633 | if (bnum == 0) |
8a3fe4f8 | 634 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
635 | |
636 | ALL_BREAKPOINTS (b) | |
637 | if (b->number == bnum) | |
2f069f6f JB |
638 | { |
639 | struct bp_location *loc = b->loc; | |
640 | for (; loc; loc = loc->next) | |
641 | { | |
642 | if (loc->cond) | |
643 | { | |
644 | xfree (loc->cond); | |
645 | loc->cond = 0; | |
646 | } | |
647 | } | |
648 | if (b->cond_string != NULL) | |
649 | xfree (b->cond_string); | |
c906108c | 650 | |
2f069f6f JB |
651 | if (*p == 0) |
652 | { | |
653 | b->cond_string = NULL; | |
654 | if (from_tty) | |
655 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
656 | } | |
657 | else | |
658 | { | |
659 | arg = p; | |
660 | /* I don't know if it matters whether this is the string the user | |
661 | typed in or the decompiled expression. */ | |
1b36a34b | 662 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
663 | b->condition_not_parsed = 0; |
664 | for (loc = b->loc; loc; loc = loc->next) | |
665 | { | |
666 | arg = p; | |
667 | loc->cond = | |
668 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
669 | if (*arg) | |
670 | error (_("Junk at end of expression")); | |
671 | } | |
672 | } | |
673 | breakpoints_changed (); | |
383f836e | 674 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
675 | return; |
676 | } | |
c906108c | 677 | |
8a3fe4f8 | 678 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
679 | } |
680 | ||
48cb2d85 VP |
681 | /* Set the command list of B to COMMANDS. */ |
682 | ||
683 | void | |
684 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
685 | { | |
686 | free_command_lines (&b->commands); | |
687 | b->commands = commands; | |
688 | breakpoints_changed (); | |
689 | observer_notify_breakpoint_modified (b->number); | |
690 | } | |
691 | ||
c906108c | 692 | static void |
fba45db2 | 693 | commands_command (char *arg, int from_tty) |
c906108c | 694 | { |
52f0bd74 | 695 | struct breakpoint *b; |
c906108c | 696 | char *p; |
52f0bd74 | 697 | int bnum; |
c906108c SS |
698 | struct command_line *l; |
699 | ||
700 | /* If we allowed this, we would have problems with when to | |
701 | free the storage, if we change the commands currently | |
702 | being read from. */ | |
703 | ||
704 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 705 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
706 | |
707 | p = arg; | |
708 | bnum = get_number (&p); | |
5c44784c | 709 | |
c906108c | 710 | if (p && *p) |
8a3fe4f8 | 711 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 712 | |
c906108c SS |
713 | ALL_BREAKPOINTS (b) |
714 | if (b->number == bnum) | |
9ebf4acf AC |
715 | { |
716 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
717 | bnum); | |
718 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 719 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf | 720 | do_cleanups (cleanups); |
48cb2d85 | 721 | breakpoint_set_commands (b, l); |
9ebf4acf | 722 | return; |
c5aa993b | 723 | } |
8a3fe4f8 | 724 | error (_("No breakpoint number %d."), bnum); |
c906108c | 725 | } |
40c03ae8 EZ |
726 | |
727 | /* Like commands_command, but instead of reading the commands from | |
728 | input stream, takes them from an already parsed command structure. | |
729 | ||
730 | This is used by cli-script.c to DTRT with breakpoint commands | |
731 | that are part of if and while bodies. */ | |
732 | enum command_control_type | |
733 | commands_from_control_command (char *arg, struct command_line *cmd) | |
734 | { | |
735 | struct breakpoint *b; | |
736 | char *p; | |
737 | int bnum; | |
738 | ||
739 | /* If we allowed this, we would have problems with when to | |
740 | free the storage, if we change the commands currently | |
741 | being read from. */ | |
742 | ||
743 | if (executing_breakpoint_commands) | |
744 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
745 | ||
746 | /* An empty string for the breakpoint number means the last | |
747 | breakpoint, but get_number expects a NULL pointer. */ | |
748 | if (arg && !*arg) | |
749 | p = NULL; | |
750 | else | |
751 | p = arg; | |
752 | bnum = get_number (&p); | |
753 | ||
754 | if (p && *p) | |
755 | error (_("Unexpected extra arguments following breakpoint number.")); | |
756 | ||
757 | ALL_BREAKPOINTS (b) | |
758 | if (b->number == bnum) | |
759 | { | |
760 | free_command_lines (&b->commands); | |
761 | if (cmd->body_count != 1) | |
762 | error (_("Invalid \"commands\" block structure.")); | |
763 | /* We need to copy the commands because if/while will free the | |
764 | list after it finishes execution. */ | |
765 | b->commands = copy_command_lines (cmd->body_list[0]); | |
766 | breakpoints_changed (); | |
383f836e | 767 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 768 | return simple_control; |
2f069f6f | 769 | } |
40c03ae8 EZ |
770 | error (_("No breakpoint number %d."), bnum); |
771 | } | |
876fa593 JK |
772 | |
773 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
774 | ||
775 | static int | |
776 | bp_location_has_shadow (struct bp_location *bl) | |
777 | { | |
778 | if (bl->loc_type != bp_loc_software_breakpoint) | |
779 | return 0; | |
780 | if (!bl->inserted) | |
781 | return 0; | |
782 | if (bl->target_info.shadow_len == 0) | |
783 | /* bp isn't valid, or doesn't shadow memory. */ | |
784 | return 0; | |
785 | return 1; | |
786 | } | |
787 | ||
8defab1a | 788 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
789 | by replacing any memory breakpoints with their shadowed contents. |
790 | ||
791 | The range of shadowed area by each bp_location is: | |
792 | b->address - bp_location_placed_address_before_address_max | |
793 | up to b->address + bp_location_shadow_len_after_address_max | |
794 | The range we were requested to resolve shadows for is: | |
795 | memaddr ... memaddr + len | |
796 | Thus the safe cutoff boundaries for performance optimization are | |
797 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
798 | and: | |
799 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 800 | |
8defab1a DJ |
801 | void |
802 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 803 | { |
876fa593 JK |
804 | /* Left boundary, right boundary and median element of our binary search. */ |
805 | unsigned bc_l, bc_r, bc; | |
806 | ||
807 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
808 | safe to report lower value but a failure to report higher one. */ | |
809 | ||
810 | bc_l = 0; | |
811 | bc_r = bp_location_count; | |
812 | while (bc_l + 1 < bc_r) | |
813 | { | |
814 | struct bp_location *b; | |
815 | ||
816 | bc = (bc_l + bc_r) / 2; | |
817 | b = bp_location[bc]; | |
818 | ||
819 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
820 | Then advance the left boundary only if we are sure the BC element can | |
821 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
822 | ||
823 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
824 | we cannot miss a breakpoint with its shadow range tail still reaching | |
825 | MEMADDR. */ | |
c5aa993b | 826 | |
876fa593 JK |
827 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
828 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
829 | bc_l = bc; | |
830 | else | |
831 | bc_r = bc; | |
832 | } | |
833 | ||
834 | /* Now do full processing of the found relevant range of elements. */ | |
835 | ||
836 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 837 | { |
876fa593 JK |
838 | struct bp_location *b = bp_location[bc]; |
839 | CORE_ADDR bp_addr = 0; | |
840 | int bp_size = 0; | |
841 | int bptoffset = 0; | |
842 | ||
ffce0d52 | 843 | if (b->owner->type == bp_none) |
8a3fe4f8 | 844 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
845 | b->owner->number); |
846 | ||
876fa593 JK |
847 | /* Performance optimization: any futher element can no longer affect BUF |
848 | content. */ | |
849 | ||
850 | if (b->address >= bp_location_placed_address_before_address_max | |
851 | && memaddr + len <= b->address | |
852 | - bp_location_placed_address_before_address_max) | |
853 | break; | |
854 | ||
855 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 856 | continue; |
6c95b8df PA |
857 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
858 | current_program_space->aspace, 0)) | |
859 | continue; | |
860 | ||
c5aa993b JM |
861 | /* Addresses and length of the part of the breakpoint that |
862 | we need to copy. */ | |
8181d85f DJ |
863 | bp_addr = b->target_info.placed_address; |
864 | bp_size = b->target_info.shadow_len; | |
8defab1a | 865 | |
c5aa993b JM |
866 | if (bp_addr + bp_size <= memaddr) |
867 | /* The breakpoint is entirely before the chunk of memory we | |
868 | are reading. */ | |
869 | continue; | |
8defab1a | 870 | |
c5aa993b JM |
871 | if (bp_addr >= memaddr + len) |
872 | /* The breakpoint is entirely after the chunk of memory we are | |
873 | reading. */ | |
874 | continue; | |
c5aa993b | 875 | |
8defab1a DJ |
876 | /* Offset within shadow_contents. */ |
877 | if (bp_addr < memaddr) | |
878 | { | |
879 | /* Only copy the second part of the breakpoint. */ | |
880 | bp_size -= memaddr - bp_addr; | |
881 | bptoffset = memaddr - bp_addr; | |
882 | bp_addr = memaddr; | |
883 | } | |
c5aa993b | 884 | |
8defab1a DJ |
885 | if (bp_addr + bp_size > memaddr + len) |
886 | { | |
887 | /* Only copy the first part of the breakpoint. */ | |
888 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
889 | } | |
c5aa993b | 890 | |
8defab1a DJ |
891 | memcpy (buf + bp_addr - memaddr, |
892 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 893 | } |
c906108c | 894 | } |
c906108c | 895 | \f |
c5aa993b | 896 | |
687595f9 | 897 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 898 | static void |
687595f9 DJ |
899 | insert_catchpoint (struct ui_out *uo, void *args) |
900 | { | |
901 | struct breakpoint *b = (struct breakpoint *) args; | |
902 | int val = -1; | |
903 | ||
fe798b75 JB |
904 | gdb_assert (b->type == bp_catchpoint); |
905 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
906 | ||
907 | b->ops->insert (b); | |
687595f9 DJ |
908 | } |
909 | ||
a5606eee VP |
910 | static int |
911 | is_hardware_watchpoint (struct breakpoint *bpt) | |
912 | { | |
913 | return (bpt->type == bp_hardware_watchpoint | |
914 | || bpt->type == bp_read_watchpoint | |
915 | || bpt->type == bp_access_watchpoint); | |
916 | } | |
7270d8f2 | 917 | |
fa4727a6 DJ |
918 | /* Find the current value of a watchpoint on EXP. Return the value in |
919 | *VALP and *RESULTP and the chain of intermediate and final values | |
920 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
921 | not need them. | |
922 | ||
ccc57cf9 | 923 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
924 | be set to NULL. *RESULTP may be a lazy value, if the result could |
925 | not be read from memory. It is used to determine whether a value | |
926 | is user-specified (we should watch the whole value) or intermediate | |
927 | (we should watch only the bit used to locate the final value). | |
928 | ||
929 | If the final value, or any intermediate value, could not be read | |
930 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
931 | set to any referenced values. *VALP will never be a lazy value. | |
932 | This is the value which we store in struct breakpoint. | |
933 | ||
934 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
935 | value chain. The caller must free the values individually. If | |
936 | VAL_CHAIN is NULL, all generated values will be left on the value | |
937 | chain. */ | |
938 | ||
939 | static void | |
940 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
941 | struct value **resultp, struct value **val_chain) | |
942 | { | |
943 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 944 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
945 | |
946 | *valp = NULL; | |
947 | if (resultp) | |
948 | *resultp = NULL; | |
949 | if (val_chain) | |
950 | *val_chain = NULL; | |
951 | ||
952 | /* Evaluate the expression. */ | |
953 | mark = value_mark (); | |
954 | result = NULL; | |
ccc57cf9 PA |
955 | |
956 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
957 | { | |
958 | result = evaluate_expression (exp); | |
959 | } | |
960 | if (ex.reason < 0) | |
961 | { | |
962 | /* Ignore memory errors, we want watchpoints pointing at | |
963 | inaccessible memory to still be created; otherwise, throw the | |
964 | error to some higher catcher. */ | |
965 | switch (ex.error) | |
966 | { | |
967 | case MEMORY_ERROR: | |
968 | break; | |
969 | default: | |
970 | throw_exception (ex); | |
971 | break; | |
972 | } | |
973 | } | |
974 | ||
fa4727a6 DJ |
975 | new_mark = value_mark (); |
976 | if (mark == new_mark) | |
977 | return; | |
978 | if (resultp) | |
979 | *resultp = result; | |
980 | ||
981 | /* Make sure it's not lazy, so that after the target stops again we | |
982 | have a non-lazy previous value to compare with. */ | |
983 | if (result != NULL | |
984 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
985 | *valp = result; | |
986 | ||
987 | if (val_chain) | |
988 | { | |
989 | /* Return the chain of intermediate values. We use this to | |
990 | decide which addresses to watch. */ | |
991 | *val_chain = new_mark; | |
992 | value_release_to_mark (mark); | |
993 | } | |
994 | } | |
995 | ||
f6bc2008 PA |
996 | /* Assuming that B is a watchpoint: returns true if the current thread |
997 | and its running state are safe to evaluate or update watchpoint B. | |
998 | Watchpoints on local expressions need to be evaluated in the | |
999 | context of the thread that was current when the watchpoint was | |
1000 | created, and, that thread needs to be stopped to be able to select | |
1001 | the correct frame context. Watchpoints on global expressions can | |
1002 | be evaluated on any thread, and in any state. It is presently left | |
1003 | to the target allowing memory accesses when threads are | |
1004 | running. */ | |
1005 | ||
1006 | static int | |
1007 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1008 | { | |
1009 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1010 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1011 | && !is_executing (inferior_ptid))); | |
1012 | } | |
1013 | ||
567e1b4e JB |
1014 | /* Assuming that B is a watchpoint: |
1015 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1016 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1017 | - Evaluate the condition if there is one, and store the result |
1018 | in b->loc->cond. | |
a5606eee VP |
1019 | - Update the list of values that must be watched in B->loc. |
1020 | ||
bfa149ac | 1021 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1022 | If this is local watchpoint that is out of scope, delete it. |
1023 | ||
1024 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1025 | + inserted on each stop here. Normal breakpoints must never be removed | |
1026 | because they might be missed by a running thread when debugging in non-stop | |
1027 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1028 | processed here) are specific to each LWP since they are stored in each LWP's | |
1029 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1030 | order to be able to modify its hardware watchpoints. | |
1031 | ||
1032 | Hardware watchpoints must be reset exactly once after being presented to the | |
1033 | user. It cannot be done sooner, because it would reset the data used to | |
1034 | present the watchpoint hit to the user. And it must not be done later | |
1035 | because it could display the same single watchpoint hit during multiple GDB | |
1036 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1037 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1038 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1039 | memory content has not changed. | |
1040 | ||
1041 | The following constraints influence the location where we can reset hardware | |
1042 | watchpoints: | |
1043 | ||
1044 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1045 | several times when GDB stops. | |
1046 | ||
1047 | [linux] | |
1048 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1049 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1050 | reason for stopping, and all the other hits are presented later, one after | |
1051 | the other, each time the user requests the execution to be resumed. | |
1052 | Execution is not resumed for the threads still having pending hit event | |
1053 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1054 | the inferior on the first stop the thread hit event is kept being reported | |
1055 | from its cached value by linux_nat_stopped_data_address until the real | |
1056 | thread resume happens after the watchpoint gets presented and thus its | |
1057 | LWP_INFO->STATUS gets reset. | |
1058 | ||
1059 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1060 | removal from inferior. */ | |
1061 | ||
b40ce68a | 1062 | static void |
a5606eee | 1063 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1064 | { |
a5606eee | 1065 | int within_current_scope; |
a5606eee VP |
1066 | struct frame_id saved_frame_id; |
1067 | struct bp_location *loc; | |
66076460 | 1068 | int frame_saved; |
a5606eee VP |
1069 | bpstat bs; |
1070 | ||
f6bc2008 PA |
1071 | /* If this is a local watchpoint, we only want to check if the |
1072 | watchpoint frame is in scope if the current thread is the thread | |
1073 | that was used to create the watchpoint. */ | |
1074 | if (!watchpoint_in_thread_scope (b)) | |
1075 | return; | |
1076 | ||
876fa593 | 1077 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1078 | update_global_locations will eventually delete them and remove |
1079 | breakpoints if needed. */ | |
a5606eee VP |
1080 | b->loc = NULL; |
1081 | ||
1082 | if (b->disposition == disp_del_at_next_stop) | |
1083 | return; | |
1084 | ||
66076460 | 1085 | frame_saved = 0; |
a5606eee VP |
1086 | |
1087 | /* Determine if the watchpoint is within scope. */ | |
1088 | if (b->exp_valid_block == NULL) | |
1089 | within_current_scope = 1; | |
1090 | else | |
1091 | { | |
1092 | struct frame_info *fi; | |
66076460 DJ |
1093 | |
1094 | /* Save the current frame's ID so we can restore it after | |
1095 | evaluating the watchpoint expression on its own frame. */ | |
1096 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1097 | took a frame parameter, so that we didn't have to change the | |
1098 | selected frame. */ | |
1099 | frame_saved = 1; | |
1100 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1101 | ||
a5606eee VP |
1102 | fi = frame_find_by_id (b->watchpoint_frame); |
1103 | within_current_scope = (fi != NULL); | |
1104 | if (within_current_scope) | |
1105 | select_frame (fi); | |
1106 | } | |
1107 | ||
1108 | if (within_current_scope && reparse) | |
1109 | { | |
1110 | char *s; | |
1111 | if (b->exp) | |
1112 | { | |
1113 | xfree (b->exp); | |
1114 | b->exp = NULL; | |
1115 | } | |
1116 | s = b->exp_string; | |
1117 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1118 | /* If the meaning of expression itself changed, the old value is | |
1119 | no longer relevant. We don't want to report a watchpoint hit | |
1120 | to the user when the old value and the new value may actually | |
1121 | be completely different objects. */ | |
1122 | value_free (b->val); | |
fa4727a6 DJ |
1123 | b->val = NULL; |
1124 | b->val_valid = 0; | |
a5606eee | 1125 | } |
a5606eee VP |
1126 | |
1127 | /* If we failed to parse the expression, for example because | |
1128 | it refers to a global variable in a not-yet-loaded shared library, | |
1129 | don't try to insert watchpoint. We don't automatically delete | |
1130 | such watchpoint, though, since failure to parse expression | |
1131 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1132 | if ( !target_has_execution) |
1133 | { | |
1134 | /* Without execution, memory can't change. No use to try and | |
1135 | set watchpoint locations. The watchpoint will be reset when | |
1136 | the target gains execution, through breakpoint_re_set. */ | |
1137 | } | |
1138 | else if (within_current_scope && b->exp) | |
a5606eee | 1139 | { |
fa4727a6 | 1140 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1141 | struct program_space *frame_pspace; |
a5606eee | 1142 | |
fa4727a6 | 1143 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1144 | |
a5606eee VP |
1145 | /* Avoid setting b->val if it's already set. The meaning of |
1146 | b->val is 'the last value' user saw, and we should update | |
1147 | it only if we reported that last value to user. As it | |
1148 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1149 | if (!b->val_valid) |
1150 | { | |
1151 | b->val = v; | |
1152 | b->val_valid = 1; | |
1153 | } | |
a5606eee | 1154 | |
db2ad4c3 JK |
1155 | /* Change the type of breakpoint between hardware assisted or an |
1156 | ordinary watchpoint depending on the hardware support and free | |
1157 | hardware slots. REPARSE is set when the inferior is started. */ | |
1158 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1159 | && reparse) | |
1160 | { | |
ca2d49e8 | 1161 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1162 | |
7b838ca2 TJB |
1163 | /* We need to determine how many resources are already used |
1164 | for all other hardware watchpoints to see if we still have | |
1165 | enough resources to also fit this watchpoint in as well. | |
1166 | To avoid the hw_watchpoint_used_count call below from counting | |
1167 | this watchpoint, make sure that it is marked as a software | |
1168 | watchpoint. */ | |
1169 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1170 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1171 | &other_type_used); | |
1172 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1173 | ||
ca2d49e8 | 1174 | if (!mem_cnt) |
db2ad4c3 JK |
1175 | b->type = bp_watchpoint; |
1176 | else | |
ca2d49e8 | 1177 | { |
d92524f1 | 1178 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1179 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1180 | if (target_resources_ok <= 0) | |
1181 | b->type = bp_watchpoint; | |
1182 | else | |
1183 | b->type = bp_hardware_watchpoint; | |
1184 | } | |
db2ad4c3 JK |
1185 | } |
1186 | ||
2d134ed3 PA |
1187 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1188 | ||
a5606eee | 1189 | /* Look at each value on the value chain. */ |
fa4727a6 | 1190 | for (v = val_chain; v; v = next) |
a5606eee VP |
1191 | { |
1192 | /* If it's a memory location, and GDB actually needed | |
1193 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1194 | must watch it. If the first value returned is |
1195 | still lazy, that means an error occurred reading it; | |
1196 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1197 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1198 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1199 | { |
1200 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1201 | |
a5606eee VP |
1202 | /* We only watch structs and arrays if user asked |
1203 | for it explicitly, never if they just happen to | |
1204 | appear in the middle of some value chain. */ | |
fa4727a6 | 1205 | if (v == result |
a5606eee VP |
1206 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1207 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1208 | { | |
1209 | CORE_ADDR addr; | |
1210 | int len, type; | |
1211 | struct bp_location *loc, **tmp; | |
1212 | ||
42ae5230 | 1213 | addr = value_address (v); |
a5606eee VP |
1214 | len = TYPE_LENGTH (value_type (v)); |
1215 | type = hw_write; | |
1216 | if (b->type == bp_read_watchpoint) | |
1217 | type = hw_read; | |
1218 | else if (b->type == bp_access_watchpoint) | |
1219 | type = hw_access; | |
1220 | ||
39d61571 | 1221 | loc = allocate_bp_location (b); |
a5606eee VP |
1222 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1223 | ; | |
1224 | *tmp = loc; | |
a6d9a66e | 1225 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1226 | |
1227 | loc->pspace = frame_pspace; | |
a5606eee VP |
1228 | loc->address = addr; |
1229 | loc->length = len; | |
1230 | loc->watchpoint_type = type; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | next = value_next (v); | |
1235 | if (v != b->val) | |
1236 | value_free (v); | |
1237 | } | |
1238 | ||
2ec93238 MK |
1239 | /* We just regenerated the list of breakpoint locations. |
1240 | The new location does not have its condition field set to anything | |
1241 | and therefore, we must always reparse the cond_string, independently | |
1242 | of the value of the reparse flag. */ | |
1243 | if (b->cond_string != NULL) | |
a5606eee VP |
1244 | { |
1245 | char *s = b->cond_string; | |
a5606eee VP |
1246 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1247 | } | |
1248 | } | |
1249 | else if (!within_current_scope) | |
7270d8f2 | 1250 | { |
a5606eee | 1251 | printf_filtered (_("\ |
567e1b4e | 1252 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1253 | in which its expression is valid.\n"), |
1254 | b->number); | |
1255 | if (b->related_breakpoint) | |
1256 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1257 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1258 | } |
a5606eee VP |
1259 | |
1260 | /* Restore the selected frame. */ | |
66076460 DJ |
1261 | if (frame_saved) |
1262 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1263 | } |
1264 | ||
a5606eee | 1265 | |
74960c60 VP |
1266 | /* Returns 1 iff breakpoint location should be |
1267 | inserted in the inferior. */ | |
1268 | static int | |
1269 | should_be_inserted (struct bp_location *bpt) | |
1270 | { | |
1271 | if (!breakpoint_enabled (bpt->owner)) | |
1272 | return 0; | |
1273 | ||
1274 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1275 | return 0; | |
1276 | ||
1277 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1278 | return 0; | |
1279 | ||
56710373 PA |
1280 | /* This is set for example, when we're attached to the parent of a |
1281 | vfork, and have detached from the child. The child is running | |
1282 | free, and we expect it to do an exec or exit, at which point the | |
1283 | OS makes the parent schedulable again (and the target reports | |
1284 | that the vfork is done). Until the child is done with the shared | |
1285 | memory region, do not insert breakpoints in the parent, otherwise | |
1286 | the child could still trip on the parent's breakpoints. Since | |
1287 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1288 | if (bpt->pspace->breakpoints_not_allowed) | |
1289 | return 0; | |
1290 | ||
1042e4c0 SS |
1291 | /* Tracepoints are inserted by the target at a time of its choosing, |
1292 | not by us. */ | |
7a697b8d | 1293 | if (tracepoint_type (bpt->owner)) |
1042e4c0 SS |
1294 | return 0; |
1295 | ||
74960c60 VP |
1296 | return 1; |
1297 | } | |
1298 | ||
879bfdc2 DJ |
1299 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1300 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1301 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1302 | |
1303 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1304 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1305 | static int |
879bfdc2 | 1306 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1307 | struct ui_file *tmp_error_stream, |
fa3a767f | 1308 | int *disabled_breaks, |
26bb91f3 | 1309 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1310 | { |
1311 | int val = 0; | |
1312 | ||
74960c60 | 1313 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1314 | return 0; |
1315 | ||
8181d85f DJ |
1316 | /* Initialize the target-specific information. */ |
1317 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1318 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1319 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1320 | |
879bfdc2 DJ |
1321 | if (bpt->loc_type == bp_loc_software_breakpoint |
1322 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1323 | { | |
765dc015 VP |
1324 | if (bpt->owner->type != bp_hardware_breakpoint) |
1325 | { | |
1326 | /* If the explicitly specified breakpoint type | |
1327 | is not hardware breakpoint, check the memory map to see | |
1328 | if the breakpoint address is in read only memory or not. | |
1329 | Two important cases are: | |
1330 | - location type is not hardware breakpoint, memory | |
1331 | is readonly. We change the type of the location to | |
1332 | hardware breakpoint. | |
1333 | - location type is hardware breakpoint, memory is read-write. | |
1334 | This means we've previously made the location hardware one, but | |
1335 | then the memory map changed, so we undo. | |
1336 | ||
1337 | When breakpoints are removed, remove_breakpoints will | |
1338 | use location types we've just set here, the only possible | |
1339 | problem is that memory map has changed during running program, | |
1340 | but it's not going to work anyway with current gdb. */ | |
1341 | struct mem_region *mr | |
1342 | = lookup_mem_region (bpt->target_info.placed_address); | |
1343 | ||
1344 | if (mr) | |
1345 | { | |
1346 | if (automatic_hardware_breakpoints) | |
1347 | { | |
1348 | int changed = 0; | |
1349 | enum bp_loc_type new_type; | |
1350 | ||
1351 | if (mr->attrib.mode != MEM_RW) | |
1352 | new_type = bp_loc_hardware_breakpoint; | |
1353 | else | |
1354 | new_type = bp_loc_software_breakpoint; | |
1355 | ||
1356 | if (new_type != bpt->loc_type) | |
1357 | { | |
1358 | static int said = 0; | |
1359 | bpt->loc_type = new_type; | |
1360 | if (!said) | |
1361 | { | |
1362 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1363 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1364 | said = 1; |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1369 | && mr->attrib.mode != MEM_RW) | |
1370 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1371 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1372 | } |
1373 | } | |
1374 | ||
879bfdc2 DJ |
1375 | /* First check to see if we have to handle an overlay. */ |
1376 | if (overlay_debugging == ovly_off | |
1377 | || bpt->section == NULL | |
1378 | || !(section_is_overlay (bpt->section))) | |
1379 | { | |
1380 | /* No overlay handling: just set the breakpoint. */ | |
1381 | ||
1382 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1383 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1384 | &bpt->target_info); | |
879bfdc2 | 1385 | else |
a6d9a66e UW |
1386 | val = target_insert_breakpoint (bpt->gdbarch, |
1387 | &bpt->target_info); | |
879bfdc2 DJ |
1388 | } |
1389 | else | |
1390 | { | |
1391 | /* This breakpoint is in an overlay section. | |
1392 | Shall we set a breakpoint at the LMA? */ | |
1393 | if (!overlay_events_enabled) | |
1394 | { | |
1395 | /* Yes -- overlay event support is not active, | |
1396 | so we must try to set a breakpoint at the LMA. | |
1397 | This will not work for a hardware breakpoint. */ | |
1398 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1399 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1400 | bpt->owner->number); |
1401 | else | |
1402 | { | |
1403 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1404 | bpt->section); | |
1405 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1406 | bpt->overlay_target_info = bpt->target_info; |
1407 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1408 | val = target_insert_breakpoint (bpt->gdbarch, |
1409 | &bpt->overlay_target_info); | |
879bfdc2 | 1410 | if (val != 0) |
99361f52 DE |
1411 | fprintf_unfiltered (tmp_error_stream, |
1412 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1413 | bpt->owner->number); |
1414 | } | |
1415 | } | |
1416 | /* Shall we set a breakpoint at the VMA? */ | |
1417 | if (section_is_mapped (bpt->section)) | |
1418 | { | |
1419 | /* Yes. This overlay section is mapped into memory. */ | |
1420 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1421 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1422 | &bpt->target_info); | |
879bfdc2 | 1423 | else |
a6d9a66e UW |
1424 | val = target_insert_breakpoint (bpt->gdbarch, |
1425 | &bpt->target_info); | |
879bfdc2 DJ |
1426 | } |
1427 | else | |
1428 | { | |
1429 | /* No. This breakpoint will not be inserted. | |
1430 | No error, but do not mark the bp as 'inserted'. */ | |
1431 | return 0; | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | if (val) | |
1436 | { | |
1437 | /* Can't set the breakpoint. */ | |
6c95b8df | 1438 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1439 | { |
1440 | /* See also: disable_breakpoints_in_shlibs. */ | |
1441 | val = 0; | |
0d381245 | 1442 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1443 | if (!*disabled_breaks) |
1444 | { | |
1445 | fprintf_unfiltered (tmp_error_stream, | |
1446 | "Cannot insert breakpoint %d.\n", | |
1447 | bpt->owner->number); | |
1448 | fprintf_unfiltered (tmp_error_stream, | |
1449 | "Temporarily disabling shared library breakpoints:\n"); | |
1450 | } | |
1451 | *disabled_breaks = 1; | |
1452 | fprintf_unfiltered (tmp_error_stream, | |
1453 | "breakpoint #%d\n", bpt->owner->number); | |
1454 | } | |
1455 | else | |
879bfdc2 | 1456 | { |
879bfdc2 DJ |
1457 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1458 | { | |
1459 | *hw_breakpoint_error = 1; | |
1460 | fprintf_unfiltered (tmp_error_stream, | |
1461 | "Cannot insert hardware breakpoint %d.\n", | |
1462 | bpt->owner->number); | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | fprintf_unfiltered (tmp_error_stream, | |
1467 | "Cannot insert breakpoint %d.\n", | |
1468 | bpt->owner->number); | |
1469 | fprintf_filtered (tmp_error_stream, | |
1470 | "Error accessing memory address "); | |
5af949e3 UW |
1471 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1472 | tmp_error_stream); | |
879bfdc2 DJ |
1473 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1474 | safe_strerror (val)); | |
1475 | } | |
1476 | ||
1477 | } | |
1478 | } | |
1479 | else | |
1480 | bpt->inserted = 1; | |
1481 | ||
1482 | return val; | |
1483 | } | |
1484 | ||
1485 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1486 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1487 | watchpoints. It's not clear that it's necessary... */ | |
1488 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1489 | { | |
a5606eee VP |
1490 | val = target_insert_watchpoint (bpt->address, |
1491 | bpt->length, | |
1492 | bpt->watchpoint_type); | |
1493 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1494 | } |
1495 | ||
fe798b75 | 1496 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1497 | { |
71fff37b AC |
1498 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1499 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1500 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1501 | bpt->owner->number); | |
1502 | if (e.reason < 0) | |
879bfdc2 DJ |
1503 | bpt->owner->enable_state = bp_disabled; |
1504 | else | |
1505 | bpt->inserted = 1; | |
1640b821 DJ |
1506 | |
1507 | /* We've already printed an error message if there was a problem | |
1508 | inserting this catchpoint, and we've disabled the catchpoint, | |
1509 | so just return success. */ | |
1510 | return 0; | |
879bfdc2 DJ |
1511 | } |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | ||
6c95b8df PA |
1516 | /* This function is called when program space PSPACE is about to be |
1517 | deleted. It takes care of updating breakpoints to not reference | |
1518 | PSPACE anymore. */ | |
1519 | ||
1520 | void | |
1521 | breakpoint_program_space_exit (struct program_space *pspace) | |
1522 | { | |
1523 | struct breakpoint *b, *b_temp; | |
876fa593 | 1524 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1525 | |
1526 | /* Remove any breakpoint that was set through this program space. */ | |
1527 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1528 | { | |
1529 | if (b->pspace == pspace) | |
1530 | delete_breakpoint (b); | |
1531 | } | |
1532 | ||
1533 | /* Breakpoints set through other program spaces could have locations | |
1534 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1535 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1536 | { |
1537 | struct bp_location *tmp; | |
1538 | ||
1539 | if (loc->pspace == pspace) | |
1540 | { | |
1541 | if (loc->owner->loc == loc) | |
1542 | loc->owner->loc = loc->next; | |
1543 | else | |
1544 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1545 | if (tmp->next == loc) | |
1546 | { | |
1547 | tmp->next = loc->next; | |
1548 | break; | |
1549 | } | |
1550 | } | |
1551 | } | |
1552 | ||
1553 | /* Now update the global location list to permanently delete the | |
1554 | removed locations above. */ | |
1555 | update_global_location_list (0); | |
1556 | } | |
1557 | ||
74960c60 VP |
1558 | /* Make sure all breakpoints are inserted in inferior. |
1559 | Throws exception on any error. | |
1560 | A breakpoint that is already inserted won't be inserted | |
1561 | again, so calling this function twice is safe. */ | |
1562 | void | |
1563 | insert_breakpoints (void) | |
1564 | { | |
1565 | struct breakpoint *bpt; | |
1566 | ||
1567 | ALL_BREAKPOINTS (bpt) | |
1568 | if (is_hardware_watchpoint (bpt)) | |
1569 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1570 | ||
b60e7edf | 1571 | update_global_location_list (1); |
74960c60 | 1572 | |
c35b1492 PA |
1573 | /* update_global_location_list does not insert breakpoints when |
1574 | always_inserted_mode is not enabled. Explicitly insert them | |
1575 | now. */ | |
1576 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1577 | insert_breakpoint_locations (); |
1578 | } | |
1579 | ||
c906108c SS |
1580 | /* insert_breakpoints is used when starting or continuing the program. |
1581 | remove_breakpoints is used when the program stops. | |
1582 | Both return zero if successful, | |
1583 | or an `errno' value if could not write the inferior. */ | |
1584 | ||
74960c60 VP |
1585 | static void |
1586 | insert_breakpoint_locations (void) | |
c906108c | 1587 | { |
a5606eee | 1588 | struct breakpoint *bpt; |
876fa593 | 1589 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1590 | int error = 0; |
c906108c SS |
1591 | int val = 0; |
1592 | int disabled_breaks = 0; | |
81d0cc19 | 1593 | int hw_breakpoint_error = 0; |
c906108c | 1594 | |
81d0cc19 | 1595 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1596 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1597 | |
81d0cc19 GS |
1598 | /* Explicitly mark the warning -- this will only be printed if |
1599 | there was an error. */ | |
1600 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1601 | |
1602 | save_current_space_and_thread (); | |
1603 | ||
876fa593 | 1604 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1605 | { |
6c95b8df PA |
1606 | struct thread_info *tp; |
1607 | CORE_ADDR last_addr; | |
1608 | ||
74960c60 | 1609 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1610 | continue; |
1611 | ||
f365de73 AS |
1612 | /* There is no point inserting thread-specific breakpoints if the |
1613 | thread no longer exists. */ | |
1614 | if (b->owner->thread != -1 | |
1615 | && !valid_thread_id (b->owner->thread)) | |
1616 | continue; | |
1617 | ||
6c95b8df PA |
1618 | switch_to_program_space_and_thread (b->pspace); |
1619 | ||
1620 | /* For targets that support global breakpoints, there's no need | |
1621 | to select an inferior to insert breakpoint to. In fact, even | |
1622 | if we aren't attached to any process yet, we should still | |
1623 | insert breakpoints. */ | |
1624 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1625 | && ptid_equal (inferior_ptid, null_ptid)) | |
1626 | continue; | |
1627 | ||
879bfdc2 | 1628 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1629 | &disabled_breaks, |
879bfdc2 DJ |
1630 | &hw_breakpoint_error); |
1631 | if (val) | |
e236ba44 | 1632 | error = val; |
879bfdc2 | 1633 | } |
c906108c | 1634 | |
a5606eee VP |
1635 | /* If we failed to insert all locations of a watchpoint, |
1636 | remove them, as half-inserted watchpoint is of limited use. */ | |
1637 | ALL_BREAKPOINTS (bpt) | |
1638 | { | |
1639 | int some_failed = 0; | |
1640 | struct bp_location *loc; | |
1641 | ||
1642 | if (!is_hardware_watchpoint (bpt)) | |
1643 | continue; | |
1644 | ||
d6b74ac4 | 1645 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1646 | continue; |
74960c60 VP |
1647 | |
1648 | if (bpt->disposition == disp_del_at_next_stop) | |
1649 | continue; | |
a5606eee VP |
1650 | |
1651 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1652 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1653 | { |
1654 | some_failed = 1; | |
1655 | break; | |
1656 | } | |
1657 | if (some_failed) | |
1658 | { | |
1659 | for (loc = bpt->loc; loc; loc = loc->next) | |
1660 | if (loc->inserted) | |
1661 | remove_breakpoint (loc, mark_uninserted); | |
1662 | ||
1663 | hw_breakpoint_error = 1; | |
1664 | fprintf_unfiltered (tmp_error_stream, | |
1665 | "Could not insert hardware watchpoint %d.\n", | |
1666 | bpt->number); | |
1667 | error = -1; | |
1668 | } | |
1669 | } | |
1670 | ||
e236ba44 | 1671 | if (error) |
81d0cc19 GS |
1672 | { |
1673 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1674 | message about possibly exhausted resources. */ | |
879bfdc2 | 1675 | if (hw_breakpoint_error) |
81d0cc19 | 1676 | { |
c6510018 MS |
1677 | fprintf_unfiltered (tmp_error_stream, |
1678 | "Could not insert hardware breakpoints:\n\ | |
1679 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1680 | } |
81d0cc19 GS |
1681 | target_terminal_ours_for_output (); |
1682 | error_stream (tmp_error_stream); | |
1683 | } | |
f7545552 TT |
1684 | |
1685 | do_cleanups (cleanups); | |
c906108c SS |
1686 | } |
1687 | ||
c906108c | 1688 | int |
fba45db2 | 1689 | remove_breakpoints (void) |
c906108c | 1690 | { |
876fa593 | 1691 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1692 | int val = 0; |
c906108c | 1693 | |
876fa593 | 1694 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 1695 | { |
0bde7532 | 1696 | if (b->inserted) |
3a1bae8e | 1697 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 1698 | } |
3a1bae8e | 1699 | return val; |
c906108c SS |
1700 | } |
1701 | ||
6c95b8df PA |
1702 | /* Remove breakpoints of process PID. */ |
1703 | ||
1704 | int | |
1705 | remove_breakpoints_pid (int pid) | |
1706 | { | |
876fa593 | 1707 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
1708 | int val; |
1709 | struct inferior *inf = find_inferior_pid (pid); | |
1710 | ||
876fa593 | 1711 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
1712 | { |
1713 | if (b->pspace != inf->pspace) | |
1714 | continue; | |
1715 | ||
1716 | if (b->inserted) | |
1717 | { | |
1718 | val = remove_breakpoint (b, mark_uninserted); | |
1719 | if (val != 0) | |
1720 | return val; | |
1721 | } | |
1722 | } | |
1723 | return 0; | |
1724 | } | |
1725 | ||
692590c1 | 1726 | int |
80ce1ecb | 1727 | remove_hw_watchpoints (void) |
692590c1 | 1728 | { |
876fa593 | 1729 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1730 | int val = 0; |
692590c1 | 1731 | |
876fa593 | 1732 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 1733 | { |
0bde7532 | 1734 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 1735 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 1736 | } |
3a1bae8e | 1737 | return val; |
692590c1 MS |
1738 | } |
1739 | ||
c906108c | 1740 | int |
fba45db2 | 1741 | reattach_breakpoints (int pid) |
c906108c | 1742 | { |
6c95b8df | 1743 | struct cleanup *old_chain; |
876fa593 | 1744 | struct bp_location *b, **bp_tmp; |
c906108c | 1745 | int val; |
a4954f26 | 1746 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1747 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
1748 | struct inferior *inf; |
1749 | struct thread_info *tp; | |
1750 | ||
1751 | tp = any_live_thread_of_process (pid); | |
1752 | if (tp == NULL) | |
1753 | return 1; | |
1754 | ||
1755 | inf = find_inferior_pid (pid); | |
1756 | old_chain = save_inferior_ptid (); | |
1757 | ||
1758 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
1759 | |
1760 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1761 | |
876fa593 | 1762 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 1763 | { |
6c95b8df PA |
1764 | if (b->pspace != inf->pspace) |
1765 | continue; | |
1766 | ||
0bde7532 | 1767 | if (b->inserted) |
c5aa993b | 1768 | { |
a4954f26 DJ |
1769 | b->inserted = 0; |
1770 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1771 | &dummy1, &dummy2); |
c5aa993b JM |
1772 | if (val != 0) |
1773 | { | |
ce696e05 | 1774 | do_cleanups (old_chain); |
c5aa993b JM |
1775 | return val; |
1776 | } | |
1777 | } | |
1778 | } | |
ce696e05 | 1779 | do_cleanups (old_chain); |
c906108c SS |
1780 | return 0; |
1781 | } | |
1782 | ||
e58b0e63 PA |
1783 | static int internal_breakpoint_number = -1; |
1784 | ||
e62c965a | 1785 | static struct breakpoint * |
a6d9a66e UW |
1786 | create_internal_breakpoint (struct gdbarch *gdbarch, |
1787 | CORE_ADDR address, enum bptype type) | |
e62c965a | 1788 | { |
e62c965a PP |
1789 | struct symtab_and_line sal; |
1790 | struct breakpoint *b; | |
1791 | ||
1792 | init_sal (&sal); /* initialize to zeroes */ | |
1793 | ||
1794 | sal.pc = address; | |
1795 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 1796 | sal.pspace = current_program_space; |
e62c965a | 1797 | |
a6d9a66e | 1798 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
1799 | b->number = internal_breakpoint_number--; |
1800 | b->disposition = disp_donttouch; | |
1801 | ||
1802 | return b; | |
1803 | } | |
1804 | ||
1805 | static void | |
69de3c6a | 1806 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1807 | { |
69de3c6a | 1808 | struct objfile *objfile; |
e62c965a | 1809 | |
69de3c6a PP |
1810 | ALL_OBJFILES (objfile) |
1811 | { | |
1812 | struct breakpoint *b; | |
1813 | struct minimal_symbol *m; | |
1814 | ||
1815 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1816 | if (m == NULL) | |
1817 | continue; | |
e62c965a | 1818 | |
a6d9a66e UW |
1819 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1820 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
1821 | bp_overlay_event); |
1822 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1823 | |
69de3c6a PP |
1824 | if (overlay_debugging == ovly_auto) |
1825 | { | |
1826 | b->enable_state = bp_enabled; | |
1827 | overlay_events_enabled = 1; | |
1828 | } | |
1829 | else | |
1830 | { | |
1831 | b->enable_state = bp_disabled; | |
1832 | overlay_events_enabled = 0; | |
1833 | } | |
e62c965a PP |
1834 | } |
1835 | update_global_location_list (1); | |
1836 | } | |
1837 | ||
0fd8e87f UW |
1838 | static void |
1839 | create_longjmp_master_breakpoint (char *func_name) | |
1840 | { | |
6c95b8df | 1841 | struct program_space *pspace; |
0fd8e87f | 1842 | struct objfile *objfile; |
6c95b8df PA |
1843 | struct cleanup *old_chain; |
1844 | ||
1845 | old_chain = save_current_program_space (); | |
0fd8e87f | 1846 | |
6c95b8df | 1847 | ALL_PSPACES (pspace) |
0fd8e87f UW |
1848 | ALL_OBJFILES (objfile) |
1849 | { | |
1850 | struct breakpoint *b; | |
1851 | struct minimal_symbol *m; | |
1852 | ||
1853 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
1854 | continue; | |
1855 | ||
6c95b8df PA |
1856 | set_current_program_space (pspace); |
1857 | ||
0fd8e87f UW |
1858 | m = lookup_minimal_symbol_text (func_name, objfile); |
1859 | if (m == NULL) | |
1860 | continue; | |
1861 | ||
a6d9a66e UW |
1862 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1863 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
1864 | bp_longjmp_master); |
1865 | b->addr_string = xstrdup (func_name); | |
1866 | b->enable_state = bp_disabled; | |
1867 | } | |
1868 | update_global_location_list (1); | |
6c95b8df PA |
1869 | |
1870 | do_cleanups (old_chain); | |
0fd8e87f UW |
1871 | } |
1872 | ||
c906108c | 1873 | void |
fba45db2 | 1874 | update_breakpoints_after_exec (void) |
c906108c | 1875 | { |
c5aa993b JM |
1876 | struct breakpoint *b; |
1877 | struct breakpoint *temp; | |
876fa593 | 1878 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 1879 | |
25b22b0a PA |
1880 | /* We're about to delete breakpoints from GDB's lists. If the |
1881 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1882 | writing the breakpoints' "shadow contents" back into memory. The | |
1883 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1884 | do that. Instead, the target is responsible from marking | |
1885 | breakpoints out as soon as it detects an exec. We don't do that | |
1886 | here instead, because there may be other attempts to delete | |
1887 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 1888 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
1889 | if (bploc->pspace == current_program_space) |
1890 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1891 | |
1892 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 1893 | { |
6c95b8df PA |
1894 | if (b->pspace != current_program_space) |
1895 | continue; | |
1896 | ||
c5aa993b JM |
1897 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
1898 | if (b->type == bp_shlib_event) | |
1899 | { | |
1900 | delete_breakpoint (b); | |
1901 | continue; | |
1902 | } | |
c906108c | 1903 | |
4efc6507 DE |
1904 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
1905 | if (b->type == bp_jit_event) | |
1906 | { | |
1907 | delete_breakpoint (b); | |
1908 | continue; | |
1909 | } | |
1910 | ||
1900040c | 1911 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
1912 | as must overlay event and longjmp master breakpoints. */ |
1913 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
1914 | || b->type == bp_longjmp_master) | |
c4093a6a JM |
1915 | { |
1916 | delete_breakpoint (b); | |
1917 | continue; | |
1918 | } | |
1919 | ||
c5aa993b JM |
1920 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1921 | if (b->type == bp_step_resume) | |
1922 | { | |
1923 | delete_breakpoint (b); | |
1924 | continue; | |
1925 | } | |
1926 | ||
611c83ae PA |
1927 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1928 | after an exec. */ | |
1929 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1930 | { | |
1931 | delete_breakpoint (b); | |
1932 | continue; | |
1933 | } | |
1934 | ||
ce78b96d JB |
1935 | if (b->type == bp_catchpoint) |
1936 | { | |
1937 | /* For now, none of the bp_catchpoint breakpoints need to | |
1938 | do anything at this point. In the future, if some of | |
1939 | the catchpoints need to something, we will need to add | |
1940 | a new method, and call this method from here. */ | |
1941 | continue; | |
1942 | } | |
1943 | ||
c5aa993b JM |
1944 | /* bp_finish is a special case. The only way we ought to be able |
1945 | to see one of these when an exec() has happened, is if the user | |
1946 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1947 | carries them to the call-site of the current callee, by setting | |
1948 | a temporary bp there and resuming. But in this case, the finish | |
1949 | will carry them entirely through the vfork & exec. | |
1950 | ||
1951 | We don't want to allow a bp_finish to remain inserted now. But | |
1952 | we can't safely delete it, 'cause finish_command has a handle to | |
1953 | the bp on a bpstat, and will later want to delete it. There's a | |
1954 | chance (and I've seen it happen) that if we delete the bp_finish | |
1955 | here, that its storage will get reused by the time finish_command | |
1956 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1957 | We really must allow finish_command to delete a bp_finish. | |
1958 | ||
53a5351d JM |
1959 | In the absense of a general solution for the "how do we know |
1960 | it's safe to delete something others may have handles to?" | |
1961 | problem, what we'll do here is just uninsert the bp_finish, and | |
1962 | let finish_command delete it. | |
1963 | ||
1964 | (We know the bp_finish is "doomed" in the sense that it's | |
1965 | momentary, and will be deleted as soon as finish_command sees | |
1966 | the inferior stopped. So it doesn't matter that the bp's | |
1967 | address is probably bogus in the new a.out, unlike e.g., the | |
1968 | solib breakpoints.) */ | |
c5aa993b | 1969 | |
c5aa993b JM |
1970 | if (b->type == bp_finish) |
1971 | { | |
1972 | continue; | |
1973 | } | |
1974 | ||
1975 | /* Without a symbolic address, we have little hope of the | |
1976 | pre-exec() address meaning the same thing in the post-exec() | |
1977 | a.out. */ | |
1978 | if (b->addr_string == NULL) | |
1979 | { | |
1980 | delete_breakpoint (b); | |
1981 | continue; | |
1982 | } | |
c5aa993b | 1983 | } |
1900040c | 1984 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 1985 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
1986 | create_longjmp_master_breakpoint ("longjmp"); |
1987 | create_longjmp_master_breakpoint ("_longjmp"); | |
1988 | create_longjmp_master_breakpoint ("siglongjmp"); | |
1989 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
1990 | } |
1991 | ||
1992 | int | |
fba45db2 | 1993 | detach_breakpoints (int pid) |
c906108c | 1994 | { |
876fa593 | 1995 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 1996 | int val = 0; |
ce696e05 | 1997 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 1998 | struct inferior *inf = current_inferior (); |
c5aa993b | 1999 | |
39f77062 | 2000 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2001 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2002 | |
6c95b8df | 2003 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2004 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2005 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2006 | { |
6c95b8df PA |
2007 | if (b->pspace != inf->pspace) |
2008 | continue; | |
2009 | ||
0bde7532 | 2010 | if (b->inserted) |
6c95b8df | 2011 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2012 | } |
ce696e05 | 2013 | do_cleanups (old_chain); |
3a1bae8e | 2014 | return val; |
c906108c SS |
2015 | } |
2016 | ||
6c95b8df PA |
2017 | /* Remove the breakpoint location B from the current address space. |
2018 | Note that this is used to detach breakpoints from a child fork. | |
2019 | When we get here, the child isn't in the inferior list, and neither | |
2020 | do we have objects to represent its address space --- we should | |
2021 | *not* look at b->pspace->aspace here. */ | |
2022 | ||
c906108c | 2023 | static int |
6c95b8df | 2024 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2025 | { |
2026 | int val; | |
6c95b8df | 2027 | struct cleanup *old_chain; |
c5aa993b | 2028 | |
0bde7532 | 2029 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2030 | /* Permanent breakpoints cannot be inserted or removed. */ |
2031 | return 0; | |
2032 | ||
74960c60 VP |
2033 | /* The type of none suggests that owner is actually deleted. |
2034 | This should not ever happen. */ | |
2035 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2036 | |
2037 | if (b->loc_type == bp_loc_software_breakpoint | |
2038 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2039 | { |
c02f5703 MS |
2040 | /* "Normal" instruction breakpoint: either the standard |
2041 | trap-instruction bp (bp_breakpoint), or a | |
2042 | bp_hardware_breakpoint. */ | |
2043 | ||
2044 | /* First check to see if we have to handle an overlay. */ | |
2045 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2046 | || b->section == NULL |
2047 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2048 | { |
2049 | /* No overlay handling: just remove the breakpoint. */ | |
2050 | ||
0bde7532 | 2051 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2052 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2053 | else |
a6d9a66e | 2054 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2055 | } |
c906108c SS |
2056 | else |
2057 | { | |
c02f5703 MS |
2058 | /* This breakpoint is in an overlay section. |
2059 | Did we set a breakpoint at the LMA? */ | |
2060 | if (!overlay_events_enabled) | |
2061 | { | |
2062 | /* Yes -- overlay event support is not active, so we | |
2063 | should have set a breakpoint at the LMA. Remove it. | |
2064 | */ | |
c02f5703 MS |
2065 | /* Ignore any failures: if the LMA is in ROM, we will |
2066 | have already warned when we failed to insert it. */ | |
0bde7532 | 2067 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2068 | target_remove_hw_breakpoint (b->gdbarch, |
2069 | &b->overlay_target_info); | |
c02f5703 | 2070 | else |
a6d9a66e UW |
2071 | target_remove_breakpoint (b->gdbarch, |
2072 | &b->overlay_target_info); | |
c02f5703 MS |
2073 | } |
2074 | /* Did we set a breakpoint at the VMA? | |
2075 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2076 | if (b->inserted) |
c906108c | 2077 | { |
c02f5703 MS |
2078 | /* Yes -- remove it. Previously we did not bother to |
2079 | remove the breakpoint if the section had been | |
2080 | unmapped, but let's not rely on that being safe. We | |
2081 | don't know what the overlay manager might do. */ | |
0bde7532 | 2082 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2083 | val = target_remove_hw_breakpoint (b->gdbarch, |
2084 | &b->target_info); | |
aa67235e UW |
2085 | |
2086 | /* However, we should remove *software* breakpoints only | |
2087 | if the section is still mapped, or else we overwrite | |
2088 | wrong code with the saved shadow contents. */ | |
2089 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2090 | val = target_remove_breakpoint (b->gdbarch, |
2091 | &b->target_info); | |
aa67235e UW |
2092 | else |
2093 | val = 0; | |
c906108c | 2094 | } |
c02f5703 MS |
2095 | else |
2096 | { | |
2097 | /* No -- not inserted, so no need to remove. No error. */ | |
2098 | val = 0; | |
2099 | } | |
c906108c | 2100 | } |
879d1e6b UW |
2101 | |
2102 | /* In some cases, we might not be able to remove a breakpoint | |
2103 | in a shared library that has already been removed, but we | |
2104 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2105 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2106 | val = 0; |
2107 | ||
c906108c SS |
2108 | if (val) |
2109 | return val; | |
0bde7532 | 2110 | b->inserted = (is == mark_inserted); |
c906108c | 2111 | } |
a5606eee | 2112 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2113 | { |
278cd55f AC |
2114 | struct value *v; |
2115 | struct value *n; | |
c5aa993b | 2116 | |
0bde7532 | 2117 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2118 | val = target_remove_watchpoint (b->address, b->length, |
2119 | b->watchpoint_type); | |
2e70b7b9 | 2120 | |
c906108c | 2121 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2122 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2123 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2124 | b->owner->number); |
c906108c | 2125 | } |
ce78b96d JB |
2126 | else if (b->owner->type == bp_catchpoint |
2127 | && breakpoint_enabled (b->owner) | |
2128 | && !b->duplicate) | |
2129 | { | |
2130 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2131 | ||
2132 | val = b->owner->ops->remove (b->owner); | |
2133 | if (val) | |
2134 | return val; | |
2135 | b->inserted = (is == mark_inserted); | |
2136 | } | |
c906108c SS |
2137 | |
2138 | return 0; | |
2139 | } | |
2140 | ||
6c95b8df PA |
2141 | static int |
2142 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2143 | { | |
2144 | int ret; | |
2145 | struct cleanup *old_chain; | |
2146 | ||
2147 | if (b->owner->enable_state == bp_permanent) | |
2148 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2149 | return 0; | |
2150 | ||
2151 | /* The type of none suggests that owner is actually deleted. | |
2152 | This should not ever happen. */ | |
2153 | gdb_assert (b->owner->type != bp_none); | |
2154 | ||
2155 | old_chain = save_current_space_and_thread (); | |
2156 | ||
2157 | switch_to_program_space_and_thread (b->pspace); | |
2158 | ||
2159 | ret = remove_breakpoint_1 (b, is); | |
2160 | ||
2161 | do_cleanups (old_chain); | |
2162 | return ret; | |
2163 | } | |
2164 | ||
c906108c SS |
2165 | /* Clear the "inserted" flag in all breakpoints. */ |
2166 | ||
25b22b0a | 2167 | void |
fba45db2 | 2168 | mark_breakpoints_out (void) |
c906108c | 2169 | { |
876fa593 | 2170 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2171 | |
876fa593 | 2172 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2173 | if (bpt->pspace == current_program_space) |
2174 | bpt->inserted = 0; | |
c906108c SS |
2175 | } |
2176 | ||
53a5351d JM |
2177 | /* Clear the "inserted" flag in all breakpoints and delete any |
2178 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2179 | |
2180 | Plus other such housekeeping that has to be done for breakpoints | |
2181 | between runs. | |
2182 | ||
53a5351d JM |
2183 | Note: this function gets called at the end of a run (by |
2184 | generic_mourn_inferior) and when a run begins (by | |
2185 | init_wait_for_inferior). */ | |
c906108c SS |
2186 | |
2187 | ||
2188 | ||
2189 | void | |
fba45db2 | 2190 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2191 | { |
52f0bd74 | 2192 | struct breakpoint *b, *temp; |
876fa593 | 2193 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2194 | int ix; |
6c95b8df | 2195 | struct program_space *pspace = current_program_space; |
c906108c | 2196 | |
50c71eaf PA |
2197 | /* If breakpoint locations are shared across processes, then there's |
2198 | nothing to do. */ | |
2567c7d9 | 2199 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2200 | return; |
2201 | ||
876fa593 | 2202 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2203 | { |
2204 | if (bpt->pspace == pspace | |
2205 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2206 | bpt->inserted = 0; |
6c95b8df | 2207 | } |
075f6582 | 2208 | |
c906108c | 2209 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2210 | { |
6c95b8df PA |
2211 | if (b->loc && b->loc->pspace != pspace) |
2212 | continue; | |
2213 | ||
c5aa993b JM |
2214 | switch (b->type) |
2215 | { | |
2216 | case bp_call_dummy: | |
2217 | case bp_watchpoint_scope: | |
c906108c | 2218 | |
c5aa993b JM |
2219 | /* If the call dummy breakpoint is at the entry point it will |
2220 | cause problems when the inferior is rerun, so we better | |
2221 | get rid of it. | |
c906108c | 2222 | |
c5aa993b JM |
2223 | Also get rid of scope breakpoints. */ |
2224 | delete_breakpoint (b); | |
2225 | break; | |
c906108c | 2226 | |
c5aa993b JM |
2227 | case bp_watchpoint: |
2228 | case bp_hardware_watchpoint: | |
2229 | case bp_read_watchpoint: | |
2230 | case bp_access_watchpoint: | |
c906108c | 2231 | |
c5aa993b JM |
2232 | /* Likewise for watchpoints on local expressions. */ |
2233 | if (b->exp_valid_block != NULL) | |
2234 | delete_breakpoint (b); | |
967af18d | 2235 | else if (context == inf_starting) |
c860120c PM |
2236 | { |
2237 | /* Reset val field to force reread of starting value | |
2238 | in insert_breakpoints. */ | |
2239 | if (b->val) | |
2240 | value_free (b->val); | |
2241 | b->val = NULL; | |
fa4727a6 | 2242 | b->val_valid = 0; |
c860120c | 2243 | } |
c5aa993b JM |
2244 | break; |
2245 | default: | |
c5aa993b JM |
2246 | break; |
2247 | } | |
2248 | } | |
1c5cfe86 PA |
2249 | |
2250 | /* Get rid of the moribund locations. */ | |
2251 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2252 | free_bp_location (bpt); | |
2253 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2254 | } |
2255 | ||
6c95b8df PA |
2256 | /* These functions concern about actual breakpoints inserted in the |
2257 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2258 | we need to hop over the bkpt --- so we check for address space | |
2259 | match, not program space. */ | |
2260 | ||
c2c6d25f JM |
2261 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2262 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2263 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2264 | permanent breakpoint. | |
2265 | - When continuing from a location with an ordinary breakpoint, we | |
2266 | actually single step once before calling insert_breakpoints. | |
2267 | - When continuing from a localion with a permanent breakpoint, we | |
2268 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2269 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2270 | |
c2c6d25f | 2271 | enum breakpoint_here |
6c95b8df | 2272 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2273 | { |
876fa593 | 2274 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2275 | int any_breakpoint_here = 0; |
c906108c | 2276 | |
876fa593 | 2277 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2278 | { |
2279 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2280 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2281 | continue; | |
2282 | ||
468d015d | 2283 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2284 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2285 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2286 | aspace, pc)) | |
075f6582 DJ |
2287 | { |
2288 | if (overlay_debugging | |
2289 | && section_is_overlay (bpt->section) | |
2290 | && !section_is_mapped (bpt->section)) | |
2291 | continue; /* unmapped overlay -- can't be a match */ | |
2292 | else if (bpt->owner->enable_state == bp_permanent) | |
2293 | return permanent_breakpoint_here; | |
2294 | else | |
2295 | any_breakpoint_here = 1; | |
2296 | } | |
2297 | } | |
c906108c | 2298 | |
c2c6d25f | 2299 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2300 | } |
2301 | ||
1c5cfe86 PA |
2302 | /* Return true if there's a moribund breakpoint at PC. */ |
2303 | ||
2304 | int | |
6c95b8df | 2305 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2306 | { |
2307 | struct bp_location *loc; | |
2308 | int ix; | |
2309 | ||
2310 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2311 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2312 | aspace, pc)) | |
1c5cfe86 PA |
2313 | return 1; |
2314 | ||
2315 | return 0; | |
2316 | } | |
c2c6d25f | 2317 | |
c36b740a | 2318 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2319 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2320 | This does not check for single-step breakpoints, which are |
2321 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2322 | |
2323 | int | |
6c95b8df | 2324 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2325 | { |
876fa593 | 2326 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2327 | |
876fa593 | 2328 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2329 | { |
075f6582 DJ |
2330 | if (bpt->loc_type != bp_loc_software_breakpoint |
2331 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2332 | continue; | |
2333 | ||
2334 | if (bpt->inserted | |
6c95b8df PA |
2335 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2336 | aspace, pc)) | |
075f6582 DJ |
2337 | { |
2338 | if (overlay_debugging | |
2339 | && section_is_overlay (bpt->section) | |
2340 | && !section_is_mapped (bpt->section)) | |
2341 | continue; /* unmapped overlay -- can't be a match */ | |
2342 | else | |
2343 | return 1; | |
2344 | } | |
c5aa993b | 2345 | } |
c36b740a VP |
2346 | return 0; |
2347 | } | |
2348 | ||
2349 | /* Returns non-zero iff there's either regular breakpoint | |
2350 | or a single step breakpoint inserted at PC. */ | |
2351 | ||
2352 | int | |
6c95b8df | 2353 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2354 | { |
6c95b8df | 2355 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2356 | return 1; |
c906108c | 2357 | |
6c95b8df | 2358 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2359 | return 1; |
2360 | ||
c906108c SS |
2361 | return 0; |
2362 | } | |
2363 | ||
4fa8626c DJ |
2364 | /* This function returns non-zero iff there is a software breakpoint |
2365 | inserted at PC. */ | |
2366 | ||
2367 | int | |
6c95b8df | 2368 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2369 | { |
876fa593 | 2370 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c DJ |
2371 | int any_breakpoint_here = 0; |
2372 | ||
876fa593 | 2373 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2374 | { |
2375 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2376 | continue; | |
2377 | ||
0d381245 | 2378 | if (bpt->inserted |
6c95b8df PA |
2379 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2380 | aspace, pc)) | |
4fa8626c DJ |
2381 | { |
2382 | if (overlay_debugging | |
2383 | && section_is_overlay (bpt->section) | |
2384 | && !section_is_mapped (bpt->section)) | |
2385 | continue; /* unmapped overlay -- can't be a match */ | |
2386 | else | |
2387 | return 1; | |
2388 | } | |
2389 | } | |
2390 | ||
1aafd4da | 2391 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2392 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2393 | return 1; |
2394 | ||
4fa8626c DJ |
2395 | return 0; |
2396 | } | |
2397 | ||
9093389c PA |
2398 | int |
2399 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2400 | CORE_ADDR addr, ULONGEST len) | |
2401 | { | |
2402 | struct breakpoint *bpt; | |
2403 | ||
2404 | ALL_BREAKPOINTS (bpt) | |
2405 | { | |
2406 | struct bp_location *loc; | |
2407 | ||
2408 | if (bpt->type != bp_hardware_watchpoint | |
2409 | && bpt->type != bp_access_watchpoint) | |
2410 | continue; | |
2411 | ||
2412 | if (!breakpoint_enabled (bpt)) | |
2413 | continue; | |
2414 | ||
2415 | for (loc = bpt->loc; loc; loc = loc->next) | |
2416 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2417 | { | |
2418 | CORE_ADDR l, h; | |
2419 | ||
2420 | /* Check for intersection. */ | |
2421 | l = max (loc->address, addr); | |
2422 | h = min (loc->address + loc->length, addr + len); | |
2423 | if (l < h) | |
2424 | return 1; | |
2425 | } | |
2426 | } | |
2427 | return 0; | |
2428 | } | |
2429 | ||
075f6582 DJ |
2430 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2431 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2432 | |
2433 | int | |
6c95b8df PA |
2434 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2435 | ptid_t ptid) | |
c906108c | 2436 | { |
876fa593 | 2437 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2438 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2439 | int thread = -1; |
4a306c9a | 2440 | int task = 0; |
a6f1cd96 | 2441 | |
876fa593 | 2442 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2443 | { |
075f6582 DJ |
2444 | if (bpt->loc_type != bp_loc_software_breakpoint |
2445 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2446 | continue; | |
2447 | ||
a6f1cd96 JB |
2448 | if (!breakpoint_enabled (bpt->owner) |
2449 | && bpt->owner->enable_state != bp_permanent) | |
2450 | continue; | |
2451 | ||
6c95b8df PA |
2452 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2453 | aspace, pc)) | |
a6f1cd96 JB |
2454 | continue; |
2455 | ||
2456 | if (bpt->owner->thread != -1) | |
075f6582 | 2457 | { |
a6f1cd96 JB |
2458 | /* This is a thread-specific breakpoint. Check that ptid |
2459 | matches that thread. If thread hasn't been computed yet, | |
2460 | it is now time to do so. */ | |
2461 | if (thread == -1) | |
2462 | thread = pid_to_thread_id (ptid); | |
2463 | if (bpt->owner->thread != thread) | |
2464 | continue; | |
075f6582 | 2465 | } |
a6f1cd96 | 2466 | |
4a306c9a JB |
2467 | if (bpt->owner->task != 0) |
2468 | { | |
2469 | /* This is a task-specific breakpoint. Check that ptid | |
2470 | matches that task. If task hasn't been computed yet, | |
2471 | it is now time to do so. */ | |
2472 | if (task == 0) | |
2473 | task = ada_get_task_number (ptid); | |
2474 | if (bpt->owner->task != task) | |
2475 | continue; | |
2476 | } | |
2477 | ||
a6f1cd96 JB |
2478 | if (overlay_debugging |
2479 | && section_is_overlay (bpt->section) | |
2480 | && !section_is_mapped (bpt->section)) | |
2481 | continue; /* unmapped overlay -- can't be a match */ | |
2482 | ||
2483 | return 1; | |
c5aa993b | 2484 | } |
c906108c SS |
2485 | |
2486 | return 0; | |
2487 | } | |
c906108c | 2488 | \f |
c5aa993b | 2489 | |
c906108c SS |
2490 | /* bpstat stuff. External routines' interfaces are documented |
2491 | in breakpoint.h. */ | |
2492 | ||
2493 | int | |
fba45db2 | 2494 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2495 | { |
533be4dd | 2496 | return (ep->type == bp_catchpoint); |
c906108c SS |
2497 | } |
2498 | ||
198757a8 VP |
2499 | void |
2500 | bpstat_free (bpstat bs) | |
2501 | { | |
2502 | if (bs->old_val != NULL) | |
2503 | value_free (bs->old_val); | |
2504 | free_command_lines (&bs->commands); | |
2505 | xfree (bs); | |
2506 | } | |
2507 | ||
c906108c SS |
2508 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2509 | Also free any storage that is part of a bpstat. */ | |
2510 | ||
2511 | void | |
fba45db2 | 2512 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2513 | { |
2514 | bpstat p; | |
2515 | bpstat q; | |
2516 | ||
2517 | if (bsp == 0) | |
2518 | return; | |
2519 | p = *bsp; | |
2520 | while (p != NULL) | |
2521 | { | |
2522 | q = p->next; | |
198757a8 | 2523 | bpstat_free (p); |
c906108c SS |
2524 | p = q; |
2525 | } | |
2526 | *bsp = NULL; | |
2527 | } | |
2528 | ||
2529 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2530 | is part of the bpstat is copied as well. */ | |
2531 | ||
2532 | bpstat | |
fba45db2 | 2533 | bpstat_copy (bpstat bs) |
c906108c SS |
2534 | { |
2535 | bpstat p = NULL; | |
2536 | bpstat tmp; | |
2537 | bpstat retval = NULL; | |
2538 | ||
2539 | if (bs == NULL) | |
2540 | return bs; | |
2541 | ||
2542 | for (; bs != NULL; bs = bs->next) | |
2543 | { | |
2544 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2545 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2546 | if (bs->commands != NULL) |
2547 | tmp->commands = copy_command_lines (bs->commands); | |
2548 | if (bs->old_val != NULL) | |
3c3185ac JK |
2549 | { |
2550 | tmp->old_val = value_copy (bs->old_val); | |
2551 | release_value (tmp->old_val); | |
2552 | } | |
31cc81e9 | 2553 | |
c906108c SS |
2554 | if (p == NULL) |
2555 | /* This is the first thing in the chain. */ | |
2556 | retval = tmp; | |
2557 | else | |
2558 | p->next = tmp; | |
2559 | p = tmp; | |
2560 | } | |
2561 | p->next = NULL; | |
2562 | return retval; | |
2563 | } | |
2564 | ||
2565 | /* Find the bpstat associated with this breakpoint */ | |
2566 | ||
2567 | bpstat | |
fba45db2 | 2568 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2569 | { |
c5aa993b JM |
2570 | if (bsp == NULL) |
2571 | return NULL; | |
c906108c | 2572 | |
c5aa993b JM |
2573 | for (; bsp != NULL; bsp = bsp->next) |
2574 | { | |
4f8d1dc6 | 2575 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2576 | return bsp; |
2577 | } | |
c906108c SS |
2578 | return NULL; |
2579 | } | |
2580 | ||
2581 | /* Find a step_resume breakpoint associated with this bpstat. | |
2582 | (If there are multiple step_resume bp's on the list, this function | |
2583 | will arbitrarily pick one.) | |
2584 | ||
2585 | It is an error to use this function if BPSTAT doesn't contain a | |
2586 | step_resume breakpoint. | |
2587 | ||
2588 | See wait_for_inferior's use of this function. */ | |
2589 | struct breakpoint * | |
fba45db2 | 2590 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2591 | { |
8601f500 MS |
2592 | int current_thread; |
2593 | ||
8a3fe4f8 | 2594 | gdb_assert (bsp != NULL); |
c906108c | 2595 | |
8601f500 MS |
2596 | current_thread = pid_to_thread_id (inferior_ptid); |
2597 | ||
c906108c SS |
2598 | for (; bsp != NULL; bsp = bsp->next) |
2599 | { | |
059fb39f PM |
2600 | if ((bsp->breakpoint_at != NULL) |
2601 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2602 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2603 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2604 | return bsp->breakpoint_at->owner; |
c906108c SS |
2605 | } |
2606 | ||
8a3fe4f8 | 2607 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2608 | } |
2609 | ||
2610 | ||
8671a17b | 2611 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2612 | at. *BSP upon return is a bpstat which points to the remaining |
2613 | breakpoints stopped at (but which is not guaranteed to be good for | |
2614 | anything but further calls to bpstat_num). | |
8671a17b PA |
2615 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2616 | Return -1 if stopped at a breakpoint that has been deleted since | |
2617 | we set it. | |
2618 | Return 1 otherwise. */ | |
c906108c SS |
2619 | |
2620 | int | |
8671a17b | 2621 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2622 | { |
2623 | struct breakpoint *b; | |
2624 | ||
2625 | if ((*bsp) == NULL) | |
2626 | return 0; /* No more breakpoint values */ | |
8671a17b | 2627 | |
4f8d1dc6 VP |
2628 | /* We assume we'll never have several bpstats that |
2629 | correspond to a single breakpoint -- otherwise, | |
2630 | this function might return the same number more | |
2631 | than once and this will look ugly. */ | |
2632 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2633 | *bsp = (*bsp)->next; |
2634 | if (b == NULL) | |
2635 | return -1; /* breakpoint that's been deleted since */ | |
2636 | ||
2637 | *num = b->number; /* We have its number */ | |
2638 | return 1; | |
c906108c SS |
2639 | } |
2640 | ||
2641 | /* Modify BS so that the actions will not be performed. */ | |
2642 | ||
2643 | void | |
fba45db2 | 2644 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2645 | { |
2646 | for (; bs != NULL; bs = bs->next) | |
2647 | { | |
c2b8ed2c | 2648 | free_command_lines (&bs->commands); |
c906108c SS |
2649 | if (bs->old_val != NULL) |
2650 | { | |
2651 | value_free (bs->old_val); | |
2652 | bs->old_val = NULL; | |
2653 | } | |
2654 | } | |
2655 | } | |
2656 | ||
f3b1572e PA |
2657 | /* Called when a command is about to proceed the inferior. */ |
2658 | ||
2659 | static void | |
2660 | breakpoint_about_to_proceed (void) | |
2661 | { | |
2662 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2663 | { | |
2664 | struct thread_info *tp = inferior_thread (); | |
2665 | ||
2666 | /* Allow inferior function calls in breakpoint commands to not | |
2667 | interrupt the command list. When the call finishes | |
2668 | successfully, the inferior will be standing at the same | |
2669 | breakpoint as if nothing happened. */ | |
2670 | if (tp->in_infcall) | |
2671 | return; | |
2672 | } | |
2673 | ||
2674 | breakpoint_proceeded = 1; | |
2675 | } | |
2676 | ||
c906108c | 2677 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2678 | static void |
4efb68b1 | 2679 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2680 | { |
2681 | executing_breakpoint_commands = 0; | |
2682 | } | |
2683 | ||
2684 | /* Execute all the commands associated with all the breakpoints at this | |
2685 | location. Any of these commands could cause the process to proceed | |
2686 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2687 | the global "breakpoint_proceeded" after each command. |
c906108c | 2688 | |
347bddb7 PA |
2689 | Returns true if a breakpoint command resumed the inferior. In that |
2690 | case, it is the caller's responsibility to recall it again with the | |
2691 | bpstat of the current thread. */ | |
2692 | ||
2693 | static int | |
2694 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2695 | { |
2696 | bpstat bs; | |
2697 | struct cleanup *old_chain; | |
347bddb7 | 2698 | int again = 0; |
c906108c SS |
2699 | |
2700 | /* Avoid endless recursion if a `source' command is contained | |
2701 | in bs->commands. */ | |
2702 | if (executing_breakpoint_commands) | |
347bddb7 | 2703 | return 0; |
c906108c SS |
2704 | |
2705 | executing_breakpoint_commands = 1; | |
2706 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2707 | ||
c906108c SS |
2708 | /* This pointer will iterate over the list of bpstat's. */ |
2709 | bs = *bsp; | |
2710 | ||
2711 | breakpoint_proceeded = 0; | |
2712 | for (; bs != NULL; bs = bs->next) | |
2713 | { | |
6c50ab1c JB |
2714 | struct command_line *cmd; |
2715 | struct cleanup *this_cmd_tree_chain; | |
2716 | ||
2717 | /* Take ownership of the BSP's command tree, if it has one. | |
2718 | ||
2719 | The command tree could legitimately contain commands like | |
2720 | 'step' and 'next', which call clear_proceed_status, which | |
2721 | frees stop_bpstat's command tree. To make sure this doesn't | |
2722 | free the tree we're executing out from under us, we need to | |
2723 | take ownership of the tree ourselves. Since a given bpstat's | |
2724 | commands are only executed once, we don't need to copy it; we | |
2725 | can clear the pointer in the bpstat, and make sure we free | |
2726 | the tree when we're done. */ | |
c906108c | 2727 | cmd = bs->commands; |
6c50ab1c JB |
2728 | bs->commands = 0; |
2729 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2730 | ||
c906108c SS |
2731 | while (cmd != NULL) |
2732 | { | |
2733 | execute_control_command (cmd); | |
2734 | ||
2735 | if (breakpoint_proceeded) | |
2736 | break; | |
2737 | else | |
2738 | cmd = cmd->next; | |
2739 | } | |
6c50ab1c JB |
2740 | |
2741 | /* We can free this command tree now. */ | |
2742 | do_cleanups (this_cmd_tree_chain); | |
2743 | ||
c906108c | 2744 | if (breakpoint_proceeded) |
32c1e744 VP |
2745 | { |
2746 | if (target_can_async_p ()) | |
347bddb7 PA |
2747 | /* If we are in async mode, then the target might be still |
2748 | running, not stopped at any breakpoint, so nothing for | |
2749 | us to do here -- just return to the event loop. */ | |
2750 | ; | |
32c1e744 VP |
2751 | else |
2752 | /* In sync mode, when execute_control_command returns | |
2753 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2754 | Breakpoint commands for that stop were not run, since |
2755 | execute_command does not run breakpoint commands -- | |
2756 | only command_line_handler does, but that one is not | |
2757 | involved in execution of breakpoint commands. So, we | |
2758 | can now execute breakpoint commands. It should be | |
2759 | noted that making execute_command do bpstat actions is | |
2760 | not an option -- in this case we'll have recursive | |
2761 | invocation of bpstat for each breakpoint with a | |
2762 | command, and can easily blow up GDB stack. Instead, we | |
2763 | return true, which will trigger the caller to recall us | |
2764 | with the new stop_bpstat. */ | |
2765 | again = 1; | |
2766 | break; | |
32c1e744 | 2767 | } |
c906108c | 2768 | } |
c2b8ed2c | 2769 | do_cleanups (old_chain); |
347bddb7 PA |
2770 | return again; |
2771 | } | |
2772 | ||
2773 | void | |
2774 | bpstat_do_actions (void) | |
2775 | { | |
2776 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2777 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2778 | && target_has_execution | |
2779 | && !is_exited (inferior_ptid) | |
2780 | && !is_executing (inferior_ptid)) | |
2781 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2782 | and only return when it is stopped at the next breakpoint, we | |
2783 | keep doing breakpoint actions until it returns false to | |
2784 | indicate the inferior was not resumed. */ | |
2785 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2786 | break; | |
c906108c SS |
2787 | } |
2788 | ||
fa4727a6 DJ |
2789 | /* Print out the (old or new) value associated with a watchpoint. */ |
2790 | ||
2791 | static void | |
2792 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2793 | { | |
2794 | if (val == NULL) | |
2795 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2796 | else | |
79a45b7d TT |
2797 | { |
2798 | struct value_print_options opts; | |
2799 | get_user_print_options (&opts); | |
2800 | value_print (val, stream, &opts); | |
2801 | } | |
fa4727a6 DJ |
2802 | } |
2803 | ||
e514a9d6 | 2804 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2805 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2806 | by having it set different print_it values. |
2807 | ||
2808 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2809 | through the bpstat list of things causing this stop, calling the | |
2810 | print_bp_stop_message function on each one. The behavior of the | |
2811 | print_bp_stop_message function depends on the print_it field of | |
2812 | bpstat. If such field so indicates, call this function here. | |
2813 | ||
2814 | Return values from this routine (ultimately used by bpstat_print() | |
2815 | and normal_stop() to decide what to do): | |
2816 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2817 | don't print anything else. | |
2818 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2819 | that something to be followed by a location. | |
2820 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2821 | that something to be followed by a location. | |
2822 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2823 | analysis. */ | |
c906108c | 2824 | |
917317f4 | 2825 | static enum print_stop_action |
fba45db2 | 2826 | print_it_typical (bpstat bs) |
c906108c | 2827 | { |
f7545552 | 2828 | struct cleanup *old_chain; |
4f8d1dc6 | 2829 | struct breakpoint *b; |
89f9893c | 2830 | const struct bp_location *bl; |
8b93c638 | 2831 | struct ui_stream *stb; |
f7545552 TT |
2832 | int bp_temp = 0; |
2833 | enum print_stop_action result; | |
2834 | ||
c906108c SS |
2835 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2836 | which has since been deleted. */ | |
e514a9d6 | 2837 | if (bs->breakpoint_at == NULL) |
917317f4 | 2838 | return PRINT_UNKNOWN; |
0d381245 VP |
2839 | bl = bs->breakpoint_at; |
2840 | b = bl->owner; | |
c906108c | 2841 | |
f7545552 TT |
2842 | stb = ui_out_stream_new (uiout); |
2843 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2844 | ||
4f8d1dc6 | 2845 | switch (b->type) |
c906108c | 2846 | { |
e514a9d6 JM |
2847 | case bp_breakpoint: |
2848 | case bp_hardware_breakpoint: | |
2cec12e5 | 2849 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2850 | if (bl->address != bl->requested_address) |
2851 | breakpoint_adjustment_warning (bl->requested_address, | |
2852 | bl->address, | |
4f8d1dc6 VP |
2853 | b->number, 1); |
2854 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2855 | if (bp_temp) |
2856 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2857 | else | |
2858 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2859 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2860 | { |
2861 | ui_out_field_string (uiout, "reason", | |
2862 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2863 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2864 | } | |
4f8d1dc6 | 2865 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2866 | ui_out_text (uiout, ", "); |
f7545552 | 2867 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2868 | break; |
2869 | ||
2870 | case bp_shlib_event: | |
917317f4 JM |
2871 | /* Did we stop because the user set the stop_on_solib_events |
2872 | variable? (If so, we report this as a generic, "Stopped due | |
2873 | to shlib event" message.) */ | |
a3f17187 | 2874 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2875 | result = PRINT_NOTHING; |
e514a9d6 JM |
2876 | break; |
2877 | ||
c4093a6a JM |
2878 | case bp_thread_event: |
2879 | /* Not sure how we will get here. | |
2880 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2881 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2882 | result = PRINT_NOTHING; |
c4093a6a JM |
2883 | break; |
2884 | ||
1900040c MS |
2885 | case bp_overlay_event: |
2886 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2887 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2888 | result = PRINT_NOTHING; |
1900040c MS |
2889 | break; |
2890 | ||
0fd8e87f UW |
2891 | case bp_longjmp_master: |
2892 | /* These should never be enabled. */ | |
2893 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
2894 | result = PRINT_NOTHING; | |
2895 | break; | |
2896 | ||
e514a9d6 JM |
2897 | case bp_watchpoint: |
2898 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2899 | annotate_watchpoint (b->number); |
2900 | if (ui_out_is_mi_like_p (uiout)) | |
2901 | ui_out_field_string | |
2902 | (uiout, "reason", | |
2903 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2904 | mention (b); | |
f7545552 | 2905 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2906 | ui_out_text (uiout, "\nOld value = "); |
2907 | watchpoint_value_print (bs->old_val, stb->stream); | |
2908 | ui_out_field_stream (uiout, "old", stb); | |
2909 | ui_out_text (uiout, "\nNew value = "); | |
2910 | watchpoint_value_print (b->val, stb->stream); | |
2911 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2912 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2913 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2914 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2915 | break; |
2916 | ||
2917 | case bp_read_watchpoint: | |
9dc5e2a9 | 2918 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2919 | ui_out_field_string |
2920 | (uiout, "reason", | |
2921 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2922 | mention (b); |
f7545552 | 2923 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2924 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2925 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2926 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2927 | ui_out_text (uiout, "\n"); |
f7545552 | 2928 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2929 | break; |
2930 | ||
2931 | case bp_access_watchpoint: | |
fa4727a6 | 2932 | if (bs->old_val != NULL) |
8b93c638 | 2933 | { |
4f8d1dc6 | 2934 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2935 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2936 | ui_out_field_string |
2937 | (uiout, "reason", | |
2938 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2939 | mention (b); |
f7545552 | 2940 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2941 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2942 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2943 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2944 | ui_out_text (uiout, "\nNew value = "); |
2945 | } | |
2946 | else | |
2947 | { | |
4f8d1dc6 | 2948 | mention (b); |
9dc5e2a9 | 2949 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2950 | ui_out_field_string |
2951 | (uiout, "reason", | |
2952 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2953 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2954 | ui_out_text (uiout, "\nValue = "); |
2955 | } | |
fa4727a6 | 2956 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2957 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2958 | ui_out_text (uiout, "\n"); |
f7545552 | 2959 | result = PRINT_UNKNOWN; |
e514a9d6 | 2960 | break; |
4ce44c66 | 2961 | |
e514a9d6 JM |
2962 | /* Fall through, we don't deal with these types of breakpoints |
2963 | here. */ | |
2964 | ||
11cf8741 | 2965 | case bp_finish: |
9dc5e2a9 | 2966 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2967 | ui_out_field_string |
2968 | (uiout, "reason", | |
2969 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2970 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2971 | break; |
2972 | ||
e514a9d6 | 2973 | case bp_until: |
9dc5e2a9 | 2974 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2975 | ui_out_field_string |
2976 | (uiout, "reason", | |
2977 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2978 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2979 | break; |
2980 | ||
c2d11a7d | 2981 | case bp_none: |
e514a9d6 JM |
2982 | case bp_longjmp: |
2983 | case bp_longjmp_resume: | |
2984 | case bp_step_resume: | |
e514a9d6 JM |
2985 | case bp_watchpoint_scope: |
2986 | case bp_call_dummy: | |
1042e4c0 | 2987 | case bp_tracepoint: |
7a697b8d | 2988 | case bp_fast_tracepoint: |
4efc6507 | 2989 | case bp_jit_event: |
e514a9d6 | 2990 | default: |
f7545552 TT |
2991 | result = PRINT_UNKNOWN; |
2992 | break; | |
e514a9d6 | 2993 | } |
f7545552 TT |
2994 | |
2995 | do_cleanups (old_chain); | |
2996 | return result; | |
e514a9d6 JM |
2997 | } |
2998 | ||
2999 | /* Generic routine for printing messages indicating why we | |
3000 | stopped. The behavior of this function depends on the value | |
3001 | 'print_it' in the bpstat structure. Under some circumstances we | |
3002 | may decide not to print anything here and delegate the task to | |
3003 | normal_stop(). */ | |
3004 | ||
3005 | static enum print_stop_action | |
3006 | print_bp_stop_message (bpstat bs) | |
3007 | { | |
3008 | switch (bs->print_it) | |
3009 | { | |
3010 | case print_it_noop: | |
3011 | /* Nothing should be printed for this bpstat entry. */ | |
3012 | return PRINT_UNKNOWN; | |
3013 | break; | |
3014 | ||
3015 | case print_it_done: | |
3016 | /* We still want to print the frame, but we already printed the | |
3017 | relevant messages. */ | |
3018 | return PRINT_SRC_AND_LOC; | |
3019 | break; | |
3020 | ||
3021 | case print_it_normal: | |
4f8d1dc6 | 3022 | { |
89f9893c | 3023 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3024 | struct breakpoint *b = bl ? bl->owner : NULL; |
3025 | ||
3026 | /* Normal case. Call the breakpoint's print_it method, or | |
3027 | print_it_typical. */ | |
3028 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3029 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3030 | return b->ops->print_it (b); | |
3031 | else | |
3032 | return print_it_typical (bs); | |
3033 | } | |
3034 | break; | |
3086aeae | 3035 | |
e514a9d6 | 3036 | default: |
8e65ff28 | 3037 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3038 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3039 | break; |
c906108c | 3040 | } |
c906108c SS |
3041 | } |
3042 | ||
e514a9d6 JM |
3043 | /* Print a message indicating what happened. This is called from |
3044 | normal_stop(). The input to this routine is the head of the bpstat | |
3045 | list - a list of the eventpoints that caused this stop. This | |
3046 | routine calls the generic print routine for printing a message | |
3047 | about reasons for stopping. This will print (for example) the | |
3048 | "Breakpoint n," part of the output. The return value of this | |
3049 | routine is one of: | |
c906108c | 3050 | |
917317f4 JM |
3051 | PRINT_UNKNOWN: Means we printed nothing |
3052 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3053 | code to print the location. An example is |
3054 | "Breakpoint 1, " which should be followed by | |
3055 | the location. | |
917317f4 | 3056 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3057 | to also print the location part of the message. |
3058 | An example is the catch/throw messages, which | |
917317f4 JM |
3059 | don't require a location appended to the end. |
3060 | PRINT_NOTHING: We have done some printing and we don't need any | |
3061 | further info to be printed.*/ | |
c906108c | 3062 | |
917317f4 | 3063 | enum print_stop_action |
fba45db2 | 3064 | bpstat_print (bpstat bs) |
c906108c SS |
3065 | { |
3066 | int val; | |
c5aa993b | 3067 | |
c906108c | 3068 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3069 | (Currently all watchpoints go on the bpstat whether hit or not. |
3070 | That probably could (should) be changed, provided care is taken | |
c906108c | 3071 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3072 | for (; bs; bs = bs->next) |
3073 | { | |
3074 | val = print_bp_stop_message (bs); | |
3075 | if (val == PRINT_SRC_ONLY | |
3076 | || val == PRINT_SRC_AND_LOC | |
3077 | || val == PRINT_NOTHING) | |
3078 | return val; | |
3079 | } | |
c906108c | 3080 | |
e514a9d6 JM |
3081 | /* We reached the end of the chain, or we got a null BS to start |
3082 | with and nothing was printed. */ | |
917317f4 | 3083 | return PRINT_UNKNOWN; |
c906108c SS |
3084 | } |
3085 | ||
3086 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3087 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3088 | The argument is a "struct expression *" that has been cast to char * to | |
3089 | make it pass through catch_errors. */ | |
3090 | ||
3091 | static int | |
4efb68b1 | 3092 | breakpoint_cond_eval (void *exp) |
c906108c | 3093 | { |
278cd55f | 3094 | struct value *mark = value_mark (); |
c5aa993b | 3095 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
3096 | value_free_to_mark (mark); |
3097 | return i; | |
3098 | } | |
3099 | ||
3100 | /* Allocate a new bpstat and chain it to the current one. */ | |
3101 | ||
3102 | static bpstat | |
89f9893c | 3103 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3104 | { |
3105 | bpstat bs; | |
3106 | ||
3107 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3108 | cbs->next = bs; | |
4f8d1dc6 | 3109 | bs->breakpoint_at = bl; |
c906108c SS |
3110 | /* If the condition is false, etc., don't do the commands. */ |
3111 | bs->commands = NULL; | |
3112 | bs->old_val = NULL; | |
3113 | bs->print_it = print_it_normal; | |
3114 | return bs; | |
3115 | } | |
3116 | \f | |
d983da9c DJ |
3117 | /* The target has stopped with waitstatus WS. Check if any hardware |
3118 | watchpoints have triggered, according to the target. */ | |
3119 | ||
3120 | int | |
3121 | watchpoints_triggered (struct target_waitstatus *ws) | |
3122 | { | |
d92524f1 | 3123 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3124 | CORE_ADDR addr; |
3125 | struct breakpoint *b; | |
3126 | ||
3127 | if (!stopped_by_watchpoint) | |
3128 | { | |
3129 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3130 | as not triggered. */ | |
3131 | ALL_BREAKPOINTS (b) | |
3132 | if (b->type == bp_hardware_watchpoint | |
3133 | || b->type == bp_read_watchpoint | |
3134 | || b->type == bp_access_watchpoint) | |
3135 | b->watchpoint_triggered = watch_triggered_no; | |
3136 | ||
3137 | return 0; | |
3138 | } | |
3139 | ||
3140 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3141 | { | |
3142 | /* We were stopped by a watchpoint, but we don't know where. | |
3143 | Mark all watchpoints as unknown. */ | |
3144 | ALL_BREAKPOINTS (b) | |
3145 | if (b->type == bp_hardware_watchpoint | |
3146 | || b->type == bp_read_watchpoint | |
3147 | || b->type == bp_access_watchpoint) | |
3148 | b->watchpoint_triggered = watch_triggered_unknown; | |
3149 | ||
3150 | return stopped_by_watchpoint; | |
3151 | } | |
3152 | ||
3153 | /* The target could report the data address. Mark watchpoints | |
3154 | affected by this data address as triggered, and all others as not | |
3155 | triggered. */ | |
3156 | ||
3157 | ALL_BREAKPOINTS (b) | |
3158 | if (b->type == bp_hardware_watchpoint | |
3159 | || b->type == bp_read_watchpoint | |
3160 | || b->type == bp_access_watchpoint) | |
3161 | { | |
a5606eee | 3162 | struct bp_location *loc; |
d983da9c DJ |
3163 | struct value *v; |
3164 | ||
3165 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3166 | for (loc = b->loc; loc; loc = loc->next) |
3167 | /* Exact match not required. Within range is | |
3168 | sufficient. */ | |
5009afc5 AS |
3169 | if (target_watchpoint_addr_within_range (¤t_target, |
3170 | addr, loc->address, | |
3171 | loc->length)) | |
a5606eee VP |
3172 | { |
3173 | b->watchpoint_triggered = watch_triggered_yes; | |
3174 | break; | |
3175 | } | |
d983da9c DJ |
3176 | } |
3177 | ||
3178 | return 1; | |
3179 | } | |
3180 | ||
c906108c SS |
3181 | /* Possible return values for watchpoint_check (this can't be an enum |
3182 | because of check_errors). */ | |
3183 | /* The watchpoint has been deleted. */ | |
3184 | #define WP_DELETED 1 | |
3185 | /* The value has changed. */ | |
3186 | #define WP_VALUE_CHANGED 2 | |
3187 | /* The value has not changed. */ | |
3188 | #define WP_VALUE_NOT_CHANGED 3 | |
3189 | ||
3190 | #define BP_TEMPFLAG 1 | |
3191 | #define BP_HARDWAREFLAG 2 | |
3192 | ||
553e4c11 JB |
3193 | /* Evaluate watchpoint condition expression and check if its value changed. |
3194 | ||
3195 | P should be a pointer to struct bpstat, but is defined as a void * | |
3196 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3197 | |
3198 | static int | |
4efb68b1 | 3199 | watchpoint_check (void *p) |
c906108c SS |
3200 | { |
3201 | bpstat bs = (bpstat) p; | |
3202 | struct breakpoint *b; | |
3203 | struct frame_info *fr; | |
3204 | int within_current_scope; | |
3205 | ||
4f8d1dc6 | 3206 | b = bs->breakpoint_at->owner; |
c906108c | 3207 | |
f6bc2008 PA |
3208 | /* If this is a local watchpoint, we only want to check if the |
3209 | watchpoint frame is in scope if the current thread is the thread | |
3210 | that was used to create the watchpoint. */ | |
3211 | if (!watchpoint_in_thread_scope (b)) | |
3212 | return WP_VALUE_NOT_CHANGED; | |
3213 | ||
c906108c SS |
3214 | if (b->exp_valid_block == NULL) |
3215 | within_current_scope = 1; | |
3216 | else | |
3217 | { | |
edb3359d DJ |
3218 | struct frame_info *frame = get_current_frame (); |
3219 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3220 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3221 | ||
101dcfbe | 3222 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3223 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3224 | |
3225 | /* If we've gotten confused in the unwinder, we might have | |
3226 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3227 | if (within_current_scope) |
3228 | { | |
3229 | struct symbol *function; | |
3230 | ||
3231 | function = get_frame_function (fr); | |
3232 | if (function == NULL | |
3233 | || !contained_in (b->exp_valid_block, | |
3234 | SYMBOL_BLOCK_VALUE (function))) | |
3235 | within_current_scope = 0; | |
3236 | } | |
69fbadd5 | 3237 | |
c12260ac CV |
3238 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3239 | in the function but the stack frame has already been invalidated. | |
3240 | Since we can't rely on the values of local variables after the | |
3241 | stack has been destroyed, we are treating the watchpoint in that | |
edb3359d DJ |
3242 | state as `not changed' without further checking. Don't mark |
3243 | watchpoints as changed if the current frame is in an epilogue - | |
3244 | even if they are in some other frame, our view of the stack | |
3245 | is likely to be wrong. */ | |
3246 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
3247 | return WP_VALUE_NOT_CHANGED; | |
fb14de7b | 3248 | |
edb3359d | 3249 | if (within_current_scope) |
c906108c SS |
3250 | /* If we end up stopping, the current frame will get selected |
3251 | in normal_stop. So this call to select_frame won't affect | |
3252 | the user. */ | |
0f7d239c | 3253 | select_frame (fr); |
c906108c | 3254 | } |
c5aa993b | 3255 | |
c906108c SS |
3256 | if (within_current_scope) |
3257 | { | |
3258 | /* We use value_{,free_to_}mark because it could be a | |
3259 | *long* time before we return to the command level and | |
c5aa993b JM |
3260 | call free_all_values. We can't call free_all_values because |
3261 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3262 | |
278cd55f | 3263 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3264 | struct value *new_val; |
3265 | ||
3266 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3267 | |
3268 | /* We use value_equal_contents instead of value_equal because the latter | |
3269 | coerces an array to a pointer, thus comparing just the address of the | |
3270 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3271 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3272 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3273 | { |
fa4727a6 DJ |
3274 | if (new_val != NULL) |
3275 | { | |
3276 | release_value (new_val); | |
3277 | value_free_to_mark (mark); | |
3278 | } | |
c906108c SS |
3279 | bs->old_val = b->val; |
3280 | b->val = new_val; | |
fa4727a6 | 3281 | b->val_valid = 1; |
c906108c SS |
3282 | /* We will stop here */ |
3283 | return WP_VALUE_CHANGED; | |
3284 | } | |
3285 | else | |
3286 | { | |
3287 | /* Nothing changed, don't do anything. */ | |
3288 | value_free_to_mark (mark); | |
3289 | /* We won't stop here */ | |
3290 | return WP_VALUE_NOT_CHANGED; | |
3291 | } | |
3292 | } | |
3293 | else | |
3294 | { | |
3295 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3296 | if we temporarily ignored the watchpoint, then when |
3297 | we reenter the block in which it is valid it contains | |
3298 | garbage (in the case of a function, it may have two | |
3299 | garbage values, one before and one after the prologue). | |
3300 | So we can't even detect the first assignment to it and | |
3301 | watch after that (since the garbage may or may not equal | |
3302 | the first value assigned). */ | |
4ce44c66 JM |
3303 | /* We print all the stop information in print_it_typical(), but |
3304 | in this case, by the time we call print_it_typical() this bp | |
3305 | will be deleted already. So we have no choice but print the | |
3306 | information here. */ | |
9dc5e2a9 | 3307 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3308 | ui_out_field_string |
3309 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3310 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3311 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3312 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3313 | which its expression is valid.\n"); | |
4ce44c66 | 3314 | |
c906108c | 3315 | if (b->related_breakpoint) |
b5de0fa7 EZ |
3316 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
3317 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
3318 | |
3319 | return WP_DELETED; | |
3320 | } | |
3321 | } | |
3322 | ||
18a18393 VP |
3323 | /* Return true if it looks like target has stopped due to hitting |
3324 | breakpoint location BL. This function does not check if we | |
3325 | should stop, only if BL explains the stop. */ | |
3326 | static int | |
6c95b8df PA |
3327 | bpstat_check_location (const struct bp_location *bl, |
3328 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3329 | { |
3330 | struct breakpoint *b = bl->owner; | |
3331 | ||
e8595ef6 SS |
3332 | /* By definition, the inferior does not report stops at |
3333 | tracepoints. */ | |
7a697b8d | 3334 | if (tracepoint_type (b)) |
e8595ef6 SS |
3335 | return 0; |
3336 | ||
18a18393 VP |
3337 | if (b->type != bp_watchpoint |
3338 | && b->type != bp_hardware_watchpoint | |
3339 | && b->type != bp_read_watchpoint | |
3340 | && b->type != bp_access_watchpoint | |
3341 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 3342 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3343 | { |
6c95b8df PA |
3344 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3345 | aspace, bp_addr)) | |
18a18393 VP |
3346 | return 0; |
3347 | if (overlay_debugging /* unmapped overlay section */ | |
3348 | && section_is_overlay (bl->section) | |
3349 | && !section_is_mapped (bl->section)) | |
3350 | return 0; | |
3351 | } | |
3352 | ||
3353 | /* Continuable hardware watchpoints are treated as non-existent if the | |
3354 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3355 | some data address). Otherwise gdb won't stop on a break instruction | |
3356 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3357 | been defined. Also skip watchpoints which we know did not trigger | |
3358 | (did not match the data address). */ | |
3359 | ||
3360 | if ((b->type == bp_hardware_watchpoint | |
3361 | || b->type == bp_read_watchpoint | |
3362 | || b->type == bp_access_watchpoint) | |
3363 | && b->watchpoint_triggered == watch_triggered_no) | |
3364 | return 0; | |
3365 | ||
3366 | if (b->type == bp_hardware_breakpoint) | |
3367 | { | |
3368 | if (bl->address != bp_addr) | |
3369 | return 0; | |
3370 | if (overlay_debugging /* unmapped overlay section */ | |
3371 | && section_is_overlay (bl->section) | |
3372 | && !section_is_mapped (bl->section)) | |
3373 | return 0; | |
3374 | } | |
ce78b96d | 3375 | |
ce78b96d JB |
3376 | if (b->type == bp_catchpoint) |
3377 | { | |
3378 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3379 | if (!b->ops->breakpoint_hit (b)) | |
3380 | return 0; | |
3381 | } | |
3382 | ||
18a18393 VP |
3383 | return 1; |
3384 | } | |
3385 | ||
3386 | /* If BS refers to a watchpoint, determine if the watched values | |
3387 | has actually changed, and we should stop. If not, set BS->stop | |
3388 | to 0. */ | |
3389 | static void | |
3390 | bpstat_check_watchpoint (bpstat bs) | |
3391 | { | |
3392 | const struct bp_location *bl = bs->breakpoint_at; | |
3393 | struct breakpoint *b = bl->owner; | |
3394 | ||
3395 | if (b->type == bp_watchpoint | |
3396 | || b->type == bp_read_watchpoint | |
3397 | || b->type == bp_access_watchpoint | |
3398 | || b->type == bp_hardware_watchpoint) | |
3399 | { | |
3400 | CORE_ADDR addr; | |
3401 | struct value *v; | |
3402 | int must_check_value = 0; | |
3403 | ||
3404 | if (b->type == bp_watchpoint) | |
3405 | /* For a software watchpoint, we must always check the | |
3406 | watched value. */ | |
3407 | must_check_value = 1; | |
3408 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3409 | /* We have a hardware watchpoint (read, write, or access) | |
3410 | and the target earlier reported an address watched by | |
3411 | this watchpoint. */ | |
3412 | must_check_value = 1; | |
3413 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3414 | && b->type == bp_hardware_watchpoint) | |
3415 | /* We were stopped by a hardware watchpoint, but the target could | |
3416 | not report the data address. We must check the watchpoint's | |
3417 | value. Access and read watchpoints are out of luck; without | |
3418 | a data address, we can't figure it out. */ | |
3419 | must_check_value = 1; | |
3420 | ||
3421 | if (must_check_value) | |
3422 | { | |
3423 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3424 | b->number); | |
3425 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3426 | int e = catch_errors (watchpoint_check, bs, message, | |
3427 | RETURN_MASK_ALL); | |
3428 | do_cleanups (cleanups); | |
3429 | switch (e) | |
3430 | { | |
3431 | case WP_DELETED: | |
3432 | /* We've already printed what needs to be printed. */ | |
3433 | bs->print_it = print_it_done; | |
3434 | /* Stop. */ | |
3435 | break; | |
3436 | case WP_VALUE_CHANGED: | |
3437 | if (b->type == bp_read_watchpoint) | |
3438 | { | |
3439 | /* Don't stop: read watchpoints shouldn't fire if | |
3440 | the value has changed. This is for targets | |
3441 | which cannot set read-only watchpoints. */ | |
3442 | bs->print_it = print_it_noop; | |
3443 | bs->stop = 0; | |
3444 | } | |
3445 | break; | |
3446 | case WP_VALUE_NOT_CHANGED: | |
3447 | if (b->type == bp_hardware_watchpoint | |
3448 | || b->type == bp_watchpoint) | |
3449 | { | |
3450 | /* Don't stop: write watchpoints shouldn't fire if | |
3451 | the value hasn't changed. */ | |
3452 | bs->print_it = print_it_noop; | |
3453 | bs->stop = 0; | |
3454 | } | |
3455 | /* Stop. */ | |
3456 | break; | |
3457 | default: | |
3458 | /* Can't happen. */ | |
3459 | case 0: | |
3460 | /* Error from catch_errors. */ | |
3461 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3462 | if (b->related_breakpoint) | |
3463 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3464 | b->disposition = disp_del_at_next_stop; | |
3465 | /* We've already printed what needs to be printed. */ | |
3466 | bs->print_it = print_it_done; | |
3467 | break; | |
3468 | } | |
3469 | } | |
3470 | else /* must_check_value == 0 */ | |
3471 | { | |
3472 | /* This is a case where some watchpoint(s) triggered, but | |
3473 | not at the address of this watchpoint, or else no | |
3474 | watchpoint triggered after all. So don't print | |
3475 | anything for this watchpoint. */ | |
3476 | bs->print_it = print_it_noop; | |
3477 | bs->stop = 0; | |
3478 | } | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | ||
3483 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3484 | of breakpoint referred to by BS. If we should not stop for this | |
3485 | breakpoint, set BS->stop to 0. */ | |
3486 | static void | |
3487 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3488 | { | |
3489 | int thread_id = pid_to_thread_id (ptid); | |
3490 | const struct bp_location *bl = bs->breakpoint_at; | |
3491 | struct breakpoint *b = bl->owner; | |
3492 | ||
3493 | if (frame_id_p (b->frame_id) | |
edb3359d | 3494 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3495 | bs->stop = 0; |
3496 | else if (bs->stop) | |
3497 | { | |
3498 | int value_is_zero = 0; | |
3499 | ||
3500 | /* If this is a scope breakpoint, mark the associated | |
3501 | watchpoint as triggered so that we will handle the | |
3502 | out-of-scope event. We'll get to the watchpoint next | |
3503 | iteration. */ | |
3504 | if (b->type == bp_watchpoint_scope) | |
3505 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3506 | ||
3507 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3508 | { | |
c5bc3a77 DJ |
3509 | /* We use value_mark and value_free_to_mark because it could |
3510 | be a long time before we return to the command level and | |
3511 | call free_all_values. We can't call free_all_values | |
3512 | because we might be in the middle of evaluating a | |
3513 | function call. */ | |
3514 | struct value *mark = value_mark (); | |
3515 | ||
edb3359d DJ |
3516 | /* Need to select the frame, with all that implies so that |
3517 | the conditions will have the right context. Because we | |
3518 | use the frame, we will not see an inlined function's | |
3519 | variables when we arrive at a breakpoint at the start | |
3520 | of the inlined function; the current frame will be the | |
3521 | call site. */ | |
18a18393 VP |
3522 | select_frame (get_current_frame ()); |
3523 | value_is_zero | |
3524 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3525 | "Error in testing breakpoint condition:\n", | |
3526 | RETURN_MASK_ALL); | |
3527 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3528 | value_free_to_mark (mark); |
18a18393 VP |
3529 | } |
3530 | if (bl->cond && value_is_zero) | |
3531 | { | |
3532 | bs->stop = 0; | |
3533 | } | |
3534 | else if (b->thread != -1 && b->thread != thread_id) | |
3535 | { | |
3536 | bs->stop = 0; | |
3537 | } | |
3538 | else if (b->ignore_count > 0) | |
3539 | { | |
3540 | b->ignore_count--; | |
3541 | annotate_ignore_count_change (); | |
3542 | bs->stop = 0; | |
3543 | /* Increase the hit count even though we don't | |
3544 | stop. */ | |
3545 | ++(b->hit_count); | |
3546 | } | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | ||
9709f61c | 3551 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3552 | BP_ADDR in thread PTID. |
c906108c | 3553 | |
d983da9c | 3554 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3555 | don't understand this stop. Result is a chain of bpstat's such that: |
3556 | ||
c5aa993b | 3557 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3558 | |
c5aa993b | 3559 | if we understand why we stopped, the result is not null. |
c906108c | 3560 | |
c5aa993b JM |
3561 | Each element of the chain refers to a particular breakpoint or |
3562 | watchpoint at which we have stopped. (We may have stopped for | |
3563 | several reasons concurrently.) | |
c906108c | 3564 | |
c5aa993b JM |
3565 | Each element of the chain has valid next, breakpoint_at, |
3566 | commands, FIXME??? fields. */ | |
c906108c SS |
3567 | |
3568 | bpstat | |
6c95b8df PA |
3569 | bpstat_stop_status (struct address_space *aspace, |
3570 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 3571 | { |
0d381245 | 3572 | struct breakpoint *b = NULL; |
876fa593 | 3573 | struct bp_location *bl, **blp_tmp; |
20874c92 | 3574 | struct bp_location *loc; |
c906108c SS |
3575 | /* Root of the chain of bpstat's */ |
3576 | struct bpstats root_bs[1]; | |
3577 | /* Pointer to the last thing in the chain currently. */ | |
3578 | bpstat bs = root_bs; | |
20874c92 | 3579 | int ix; |
429374b8 | 3580 | int need_remove_insert; |
c906108c | 3581 | |
429374b8 JK |
3582 | /* ALL_BP_LOCATIONS iteration would break across |
3583 | update_global_location_list possibly executed by | |
3584 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 3585 | |
429374b8 JK |
3586 | ALL_BREAKPOINTS (b) |
3587 | { | |
3588 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
3589 | continue; | |
a5606eee | 3590 | |
429374b8 JK |
3591 | for (bl = b->loc; bl != NULL; bl = bl->next) |
3592 | { | |
3593 | /* For hardware watchpoints, we look only at the first location. | |
3594 | The watchpoint_check function will work on entire expression, | |
3595 | not the individual locations. For read watchopints, the | |
3596 | watchpoints_triggered function have checked all locations | |
3597 | already. */ | |
3598 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3599 | break; | |
18a18393 | 3600 | |
429374b8 JK |
3601 | if (bl->shlib_disabled) |
3602 | continue; | |
c5aa993b | 3603 | |
429374b8 JK |
3604 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
3605 | continue; | |
c5aa993b | 3606 | |
429374b8 | 3607 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 3608 | |
429374b8 | 3609 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3610 | |
429374b8 JK |
3611 | /* Assume we stop. Should we find watchpoint that is not actually |
3612 | triggered, or if condition of breakpoint is false, we'll reset | |
3613 | 'stop' to 0. */ | |
3614 | bs->stop = 1; | |
3615 | bs->print = 1; | |
d983da9c | 3616 | |
429374b8 JK |
3617 | bpstat_check_watchpoint (bs); |
3618 | if (!bs->stop) | |
3619 | continue; | |
18a18393 | 3620 | |
429374b8 JK |
3621 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
3622 | || b->type == bp_longjmp_master) | |
3623 | /* We do not stop for these. */ | |
3624 | bs->stop = 0; | |
3625 | else | |
3626 | bpstat_check_breakpoint_conditions (bs, ptid); | |
3627 | ||
3628 | if (bs->stop) | |
3629 | { | |
3630 | ++(b->hit_count); | |
c906108c | 3631 | |
429374b8 JK |
3632 | /* We will stop here */ |
3633 | if (b->disposition == disp_disable) | |
3634 | { | |
3635 | if (b->enable_state != bp_permanent) | |
3636 | b->enable_state = bp_disabled; | |
3637 | update_global_location_list (0); | |
3638 | } | |
3639 | if (b->silent) | |
3640 | bs->print = 0; | |
3641 | bs->commands = b->commands; | |
3642 | if (bs->commands | |
3643 | && (strcmp ("silent", bs->commands->line) == 0 | |
3644 | || (xdb_commands && strcmp ("Q", | |
3645 | bs->commands->line) == 0))) | |
3646 | { | |
3647 | bs->commands = bs->commands->next; | |
3648 | bs->print = 0; | |
3649 | } | |
3650 | bs->commands = copy_command_lines (bs->commands); | |
3651 | } | |
3652 | ||
3653 | /* Print nothing for this entry if we dont stop or dont print. */ | |
3654 | if (bs->stop == 0 || bs->print == 0) | |
3655 | bs->print_it = print_it_noop; | |
3656 | } | |
3657 | } | |
876fa593 | 3658 | |
20874c92 VP |
3659 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3660 | { | |
6c95b8df PA |
3661 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
3662 | aspace, bp_addr)) | |
20874c92 VP |
3663 | { |
3664 | bs = bpstat_alloc (loc, bs); | |
3665 | /* For hits of moribund locations, we should just proceed. */ | |
3666 | bs->stop = 0; | |
3667 | bs->print = 0; | |
3668 | bs->print_it = print_it_noop; | |
3669 | } | |
3670 | } | |
3671 | ||
c906108c SS |
3672 | bs->next = NULL; /* Terminate the chain */ |
3673 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3674 | ||
d983da9c DJ |
3675 | /* If we aren't stopping, the value of some hardware watchpoint may |
3676 | not have changed, but the intermediate memory locations we are | |
3677 | watching may have. Don't bother if we're stopping; this will get | |
3678 | done later. */ | |
3679 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3680 | if (bs->stop) | |
3681 | break; | |
3682 | ||
d832cb68 | 3683 | need_remove_insert = 0; |
d983da9c DJ |
3684 | if (bs == NULL) |
3685 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3686 | if (!bs->stop | |
20874c92 | 3687 | && bs->breakpoint_at->owner |
2d134ed3 | 3688 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 3689 | { |
2d134ed3 PA |
3690 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
3691 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
3692 | Prevent further code from trying to use it. */ | |
a5606eee | 3693 | bs->breakpoint_at = NULL; |
d832cb68 | 3694 | need_remove_insert = 1; |
d983da9c DJ |
3695 | } |
3696 | ||
d832cb68 | 3697 | if (need_remove_insert) |
2d134ed3 | 3698 | update_global_location_list (1); |
d832cb68 | 3699 | |
d983da9c | 3700 | return root_bs->next; |
c906108c SS |
3701 | } |
3702 | \f | |
3703 | /* Tell what to do about this bpstat. */ | |
3704 | struct bpstat_what | |
fba45db2 | 3705 | bpstat_what (bpstat bs) |
c906108c SS |
3706 | { |
3707 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3708 | enum class |
3709 | { | |
3710 | /* This bpstat element has no effect on the main_action. */ | |
3711 | no_effect = 0, | |
3712 | ||
3713 | /* There was a watchpoint, stop but don't print. */ | |
3714 | wp_silent, | |
c906108c | 3715 | |
c5aa993b JM |
3716 | /* There was a watchpoint, stop and print. */ |
3717 | wp_noisy, | |
c906108c | 3718 | |
c5aa993b JM |
3719 | /* There was a breakpoint but we're not stopping. */ |
3720 | bp_nostop, | |
c906108c | 3721 | |
c5aa993b JM |
3722 | /* There was a breakpoint, stop but don't print. */ |
3723 | bp_silent, | |
c906108c | 3724 | |
c5aa993b JM |
3725 | /* There was a breakpoint, stop and print. */ |
3726 | bp_noisy, | |
c906108c | 3727 | |
c5aa993b JM |
3728 | /* We hit the longjmp breakpoint. */ |
3729 | long_jump, | |
c906108c | 3730 | |
c5aa993b JM |
3731 | /* We hit the longjmp_resume breakpoint. */ |
3732 | long_resume, | |
c906108c | 3733 | |
c5aa993b JM |
3734 | /* We hit the step_resume breakpoint. */ |
3735 | step_resume, | |
c906108c | 3736 | |
c5aa993b JM |
3737 | /* We hit the shared library event breakpoint. */ |
3738 | shlib_event, | |
c906108c | 3739 | |
4efc6507 DE |
3740 | /* We hit the jit event breakpoint. */ |
3741 | jit_event, | |
3742 | ||
c5aa993b JM |
3743 | /* This is just used to count how many enums there are. */ |
3744 | class_last | |
c906108c SS |
3745 | }; |
3746 | ||
3747 | /* Here is the table which drives this routine. So that we can | |
3748 | format it pretty, we define some abbreviations for the | |
3749 | enum bpstat_what codes. */ | |
3750 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3751 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3752 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3753 | #define sgl BPSTAT_WHAT_SINGLE | |
3754 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3755 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3756 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3757 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 3758 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
3759 | |
3760 | /* "Can't happen." Might want to print an error message. | |
3761 | abort() is not out of the question, but chances are GDB is just | |
3762 | a bit confused, not unusable. */ | |
3763 | #define err BPSTAT_WHAT_STOP_NOISY | |
3764 | ||
3765 | /* Given an old action and a class, come up with a new action. */ | |
3766 | /* One interesting property of this table is that wp_silent is the same | |
3767 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3768 | after stopping, the check for whether to step over a breakpoint | |
3769 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3770 | reference to how we stopped. We retain separate wp_silent and |
3771 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3772 | |
3773 | Another possibly interesting property of this table is that | |
3774 | there's a partial ordering, priority-like, of the actions. Once | |
3775 | you've decided that some action is appropriate, you'll never go | |
3776 | back and decide something of a lower priority is better. The | |
3777 | ordering is: | |
3778 | ||
4efc6507 DE |
3779 | kc < jit clr sgl shl slr sn sr ss |
3780 | sgl < jit shl slr sn sr ss | |
3781 | slr < jit err shl sn sr ss | |
3782 | clr < jit err shl sn sr ss | |
3783 | ss < jit shl sn sr | |
3784 | sn < jit shl sr | |
3785 | jit < shl sr | |
d81191fc | 3786 | shl < sr |
4d5b2cd7 | 3787 | sr < |
c5aa993b | 3788 | |
43ff13b4 JM |
3789 | What I think this means is that we don't need a damned table |
3790 | here. If you just put the rows and columns in the right order, | |
3791 | it'd look awfully regular. We could simply walk the bpstat list | |
3792 | and choose the highest priority action we find, with a little | |
78b6a731 | 3793 | logic to handle the 'err' cases. */ |
c906108c SS |
3794 | |
3795 | /* step_resume entries: a step resume breakpoint overrides another | |
3796 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3797 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3798 | |
3799 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3800 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3801 | { | |
3802 | /* old action */ | |
4efc6507 DE |
3803 | /* kc ss sn sgl slr clr sr shl jit */ |
3804 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
3805 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
3806 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
3807 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
3808 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
3809 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
3810 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
3811 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
3812 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
3813 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
3814 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 3815 | }; |
c906108c SS |
3816 | |
3817 | #undef kc | |
3818 | #undef ss | |
3819 | #undef sn | |
3820 | #undef sgl | |
3821 | #undef slr | |
3822 | #undef clr | |
c906108c SS |
3823 | #undef err |
3824 | #undef sr | |
3825 | #undef ts | |
3826 | #undef shl | |
4efc6507 | 3827 | #undef jit |
c906108c SS |
3828 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3829 | struct bpstat_what retval; | |
3830 | ||
3831 | retval.call_dummy = 0; | |
3832 | for (; bs != NULL; bs = bs->next) | |
3833 | { | |
3834 | enum class bs_class = no_effect; | |
3835 | if (bs->breakpoint_at == NULL) | |
3836 | /* I suspect this can happen if it was a momentary breakpoint | |
3837 | which has since been deleted. */ | |
3838 | continue; | |
20874c92 VP |
3839 | if (bs->breakpoint_at->owner == NULL) |
3840 | bs_class = bp_nostop; | |
3841 | else | |
4f8d1dc6 | 3842 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3843 | { |
3844 | case bp_none: | |
3845 | continue; | |
3846 | ||
3847 | case bp_breakpoint: | |
3848 | case bp_hardware_breakpoint: | |
3849 | case bp_until: | |
3850 | case bp_finish: | |
3851 | if (bs->stop) | |
3852 | { | |
3853 | if (bs->print) | |
3854 | bs_class = bp_noisy; | |
3855 | else | |
3856 | bs_class = bp_silent; | |
3857 | } | |
3858 | else | |
3859 | bs_class = bp_nostop; | |
3860 | break; | |
3861 | case bp_watchpoint: | |
3862 | case bp_hardware_watchpoint: | |
3863 | case bp_read_watchpoint: | |
3864 | case bp_access_watchpoint: | |
3865 | if (bs->stop) | |
3866 | { | |
3867 | if (bs->print) | |
3868 | bs_class = wp_noisy; | |
3869 | else | |
3870 | bs_class = wp_silent; | |
3871 | } | |
3872 | else | |
53a5351d JM |
3873 | /* There was a watchpoint, but we're not stopping. |
3874 | This requires no further action. */ | |
c906108c SS |
3875 | bs_class = no_effect; |
3876 | break; | |
3877 | case bp_longjmp: | |
3878 | bs_class = long_jump; | |
3879 | break; | |
3880 | case bp_longjmp_resume: | |
3881 | bs_class = long_resume; | |
3882 | break; | |
3883 | case bp_step_resume: | |
3884 | if (bs->stop) | |
3885 | { | |
3886 | bs_class = step_resume; | |
3887 | } | |
3888 | else | |
3889 | /* It is for the wrong frame. */ | |
3890 | bs_class = bp_nostop; | |
3891 | break; | |
c906108c SS |
3892 | case bp_watchpoint_scope: |
3893 | bs_class = bp_nostop; | |
3894 | break; | |
c5aa993b JM |
3895 | case bp_shlib_event: |
3896 | bs_class = shlib_event; | |
3897 | break; | |
4efc6507 DE |
3898 | case bp_jit_event: |
3899 | bs_class = jit_event; | |
3900 | break; | |
c4093a6a | 3901 | case bp_thread_event: |
1900040c | 3902 | case bp_overlay_event: |
0fd8e87f | 3903 | case bp_longjmp_master: |
c4093a6a JM |
3904 | bs_class = bp_nostop; |
3905 | break; | |
ce78b96d | 3906 | case bp_catchpoint: |
c5aa993b JM |
3907 | if (bs->stop) |
3908 | { | |
3909 | if (bs->print) | |
3910 | bs_class = bp_noisy; | |
3911 | else | |
3912 | bs_class = bp_silent; | |
3913 | } | |
3914 | else | |
53a5351d JM |
3915 | /* There was a catchpoint, but we're not stopping. |
3916 | This requires no further action. */ | |
c5aa993b JM |
3917 | bs_class = no_effect; |
3918 | break; | |
c906108c | 3919 | case bp_call_dummy: |
53a5351d JM |
3920 | /* Make sure the action is stop (silent or noisy), |
3921 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3922 | bs_class = bp_silent; |
3923 | retval.call_dummy = 1; | |
3924 | break; | |
1042e4c0 | 3925 | case bp_tracepoint: |
7a697b8d | 3926 | case bp_fast_tracepoint: |
1042e4c0 SS |
3927 | /* Tracepoint hits should not be reported back to GDB, and |
3928 | if one got through somehow, it should have been filtered | |
3929 | out already. */ | |
3930 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 3931 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 3932 | break; |
c906108c | 3933 | } |
c5aa993b | 3934 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3935 | } |
3936 | retval.main_action = current_action; | |
3937 | return retval; | |
3938 | } | |
3939 | ||
3940 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3941 | without hardware support). This isn't related to a specific bpstat, | |
3942 | just to things like whether watchpoints are set. */ | |
3943 | ||
c5aa993b | 3944 | int |
fba45db2 | 3945 | bpstat_should_step (void) |
c906108c SS |
3946 | { |
3947 | struct breakpoint *b; | |
3948 | ALL_BREAKPOINTS (b) | |
717a8278 | 3949 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3950 | return 1; |
c906108c SS |
3951 | return 0; |
3952 | } | |
3953 | ||
67822962 PA |
3954 | int |
3955 | bpstat_causes_stop (bpstat bs) | |
3956 | { | |
3957 | for (; bs != NULL; bs = bs->next) | |
3958 | if (bs->stop) | |
3959 | return 1; | |
3960 | ||
3961 | return 0; | |
3962 | } | |
3963 | ||
c906108c | 3964 | \f |
c5aa993b | 3965 | |
859825b8 JK |
3966 | /* Print the LOC location out of the list of B->LOC locations. */ |
3967 | ||
0d381245 VP |
3968 | static void print_breakpoint_location (struct breakpoint *b, |
3969 | struct bp_location *loc, | |
3970 | char *wrap_indent, | |
3971 | struct ui_stream *stb) | |
3972 | { | |
6c95b8df PA |
3973 | struct cleanup *old_chain = save_current_program_space (); |
3974 | ||
859825b8 JK |
3975 | if (loc != NULL && loc->shlib_disabled) |
3976 | loc = NULL; | |
3977 | ||
6c95b8df PA |
3978 | if (loc != NULL) |
3979 | set_current_program_space (loc->pspace); | |
3980 | ||
859825b8 | 3981 | if (b->source_file && loc) |
0d381245 VP |
3982 | { |
3983 | struct symbol *sym | |
3984 | = find_pc_sect_function (loc->address, loc->section); | |
3985 | if (sym) | |
3986 | { | |
3987 | ui_out_text (uiout, "in "); | |
3988 | ui_out_field_string (uiout, "func", | |
3989 | SYMBOL_PRINT_NAME (sym)); | |
3990 | ui_out_wrap_hint (uiout, wrap_indent); | |
3991 | ui_out_text (uiout, " at "); | |
3992 | } | |
3993 | ui_out_field_string (uiout, "file", b->source_file); | |
3994 | ui_out_text (uiout, ":"); | |
3995 | ||
3996 | if (ui_out_is_mi_like_p (uiout)) | |
3997 | { | |
3998 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3999 | char *fullname = symtab_to_fullname (sal.symtab); | |
4000 | ||
4001 | if (fullname) | |
4002 | ui_out_field_string (uiout, "fullname", fullname); | |
4003 | } | |
4004 | ||
4005 | ui_out_field_int (uiout, "line", b->line_number); | |
4006 | } | |
859825b8 | 4007 | else if (loc) |
0d381245 | 4008 | { |
22e722e1 DJ |
4009 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4010 | demangle, ""); | |
0d381245 VP |
4011 | ui_out_field_stream (uiout, "at", stb); |
4012 | } | |
859825b8 JK |
4013 | else |
4014 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4015 | |
4016 | do_cleanups (old_chain); | |
0d381245 VP |
4017 | } |
4018 | ||
c4093a6a | 4019 | /* Print B to gdb_stdout. */ |
c906108c | 4020 | static void |
0d381245 VP |
4021 | print_one_breakpoint_location (struct breakpoint *b, |
4022 | struct bp_location *loc, | |
4023 | int loc_number, | |
a6d9a66e | 4024 | struct bp_location **last_loc, |
6c95b8df PA |
4025 | int print_address_bits, |
4026 | int allflag) | |
c906108c | 4027 | { |
52f0bd74 AC |
4028 | struct command_line *l; |
4029 | struct symbol *sym; | |
c4093a6a JM |
4030 | struct ep_type_description |
4031 | { | |
4032 | enum bptype type; | |
4033 | char *description; | |
4034 | }; | |
4035 | static struct ep_type_description bptypes[] = | |
c906108c | 4036 | { |
c5aa993b JM |
4037 | {bp_none, "?deleted?"}, |
4038 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4039 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4040 | {bp_until, "until"}, |
4041 | {bp_finish, "finish"}, | |
4042 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4043 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4044 | {bp_read_watchpoint, "read watchpoint"}, |
4045 | {bp_access_watchpoint, "acc watchpoint"}, | |
4046 | {bp_longjmp, "longjmp"}, | |
4047 | {bp_longjmp_resume, "longjmp resume"}, | |
4048 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4049 | {bp_watchpoint_scope, "watchpoint scope"}, |
4050 | {bp_call_dummy, "call dummy"}, | |
4051 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 4052 | {bp_thread_event, "thread events"}, |
1900040c | 4053 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4054 | {bp_longjmp_master, "longjmp master"}, |
ce78b96d | 4055 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4056 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4057 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4058 | {bp_jit_event, "jit events"}, |
c5aa993b | 4059 | }; |
c4093a6a | 4060 | |
c2c6d25f | 4061 | static char bpenables[] = "nynny"; |
c906108c | 4062 | char wrap_indent[80]; |
8b93c638 JM |
4063 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4064 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4065 | struct cleanup *bkpt_chain; |
c906108c | 4066 | |
0d381245 VP |
4067 | int header_of_multiple = 0; |
4068 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4069 | struct value_print_options opts; |
4070 | ||
4071 | get_user_print_options (&opts); | |
0d381245 VP |
4072 | |
4073 | gdb_assert (!loc || loc_number != 0); | |
4074 | /* See comment in print_one_breakpoint concerning | |
4075 | treatment of breakpoints with single disabled | |
4076 | location. */ | |
4077 | if (loc == NULL | |
4078 | && (b->loc != NULL | |
4079 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4080 | header_of_multiple = 1; | |
4081 | if (loc == NULL) | |
4082 | loc = b->loc; | |
4083 | ||
c4093a6a | 4084 | annotate_record (); |
3b31d625 | 4085 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4086 | |
4087 | /* 1 */ | |
4088 | annotate_field (0); | |
0d381245 VP |
4089 | if (part_of_multiple) |
4090 | { | |
4091 | char *formatted; | |
0c6773c1 | 4092 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4093 | ui_out_field_string (uiout, "number", formatted); |
4094 | xfree (formatted); | |
4095 | } | |
4096 | else | |
4097 | { | |
4098 | ui_out_field_int (uiout, "number", b->number); | |
4099 | } | |
c4093a6a JM |
4100 | |
4101 | /* 2 */ | |
4102 | annotate_field (1); | |
0d381245 VP |
4103 | if (part_of_multiple) |
4104 | ui_out_field_skip (uiout, "type"); | |
4105 | else | |
4106 | { | |
4107 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4108 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4109 | internal_error (__FILE__, __LINE__, | |
4110 | _("bptypes table does not describe type #%d."), | |
4111 | (int) b->type); | |
4112 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4113 | } | |
c4093a6a JM |
4114 | |
4115 | /* 3 */ | |
4116 | annotate_field (2); | |
0d381245 VP |
4117 | if (part_of_multiple) |
4118 | ui_out_field_skip (uiout, "disp"); | |
4119 | else | |
2cec12e5 | 4120 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4121 | |
c4093a6a JM |
4122 | |
4123 | /* 4 */ | |
4124 | annotate_field (3); | |
0d381245 | 4125 | if (part_of_multiple) |
54e52265 | 4126 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4127 | else |
54e52265 VP |
4128 | ui_out_field_fmt (uiout, "enabled", "%c", |
4129 | bpenables[(int) b->enable_state]); | |
4130 | ui_out_spaces (uiout, 2); | |
0d381245 | 4131 | |
c4093a6a JM |
4132 | |
4133 | /* 5 and 6 */ | |
4134 | strcpy (wrap_indent, " "); | |
79a45b7d | 4135 | if (opts.addressprint) |
75ac9d7b | 4136 | { |
a6d9a66e | 4137 | if (print_address_bits <= 32) |
75ac9d7b MS |
4138 | strcat (wrap_indent, " "); |
4139 | else | |
4140 | strcat (wrap_indent, " "); | |
4141 | } | |
c906108c | 4142 | |
3086aeae | 4143 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4144 | { |
4145 | /* Although the print_one can possibly print | |
4146 | all locations, calling it here is not likely | |
4147 | to get any nice result. So, make sure there's | |
4148 | just one location. */ | |
4149 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4150 | b->ops->print_one (b, last_loc); |
0d381245 | 4151 | } |
3086aeae DJ |
4152 | else |
4153 | switch (b->type) | |
4154 | { | |
4155 | case bp_none: | |
4156 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4157 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4158 | break; |
c906108c | 4159 | |
3086aeae DJ |
4160 | case bp_watchpoint: |
4161 | case bp_hardware_watchpoint: | |
4162 | case bp_read_watchpoint: | |
4163 | case bp_access_watchpoint: | |
4164 | /* Field 4, the address, is omitted (which makes the columns | |
4165 | not line up too nicely with the headers, but the effect | |
4166 | is relatively readable). */ | |
79a45b7d | 4167 | if (opts.addressprint) |
3086aeae DJ |
4168 | ui_out_field_skip (uiout, "addr"); |
4169 | annotate_field (5); | |
fa8a61dc | 4170 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4171 | break; |
4172 | ||
3086aeae DJ |
4173 | case bp_breakpoint: |
4174 | case bp_hardware_breakpoint: | |
4175 | case bp_until: | |
4176 | case bp_finish: | |
4177 | case bp_longjmp: | |
4178 | case bp_longjmp_resume: | |
4179 | case bp_step_resume: | |
3086aeae DJ |
4180 | case bp_watchpoint_scope: |
4181 | case bp_call_dummy: | |
4182 | case bp_shlib_event: | |
4183 | case bp_thread_event: | |
4184 | case bp_overlay_event: | |
0fd8e87f | 4185 | case bp_longjmp_master: |
1042e4c0 | 4186 | case bp_tracepoint: |
7a697b8d | 4187 | case bp_fast_tracepoint: |
4efc6507 | 4188 | case bp_jit_event: |
79a45b7d | 4189 | if (opts.addressprint) |
3086aeae DJ |
4190 | { |
4191 | annotate_field (4); | |
54e52265 | 4192 | if (header_of_multiple) |
0d381245 | 4193 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4194 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4195 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4196 | else |
5af949e3 UW |
4197 | ui_out_field_core_addr (uiout, "addr", |
4198 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4199 | } |
4200 | annotate_field (5); | |
0d381245 VP |
4201 | if (!header_of_multiple) |
4202 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4203 | if (b->loc) | |
a6d9a66e | 4204 | *last_loc = b->loc; |
3086aeae DJ |
4205 | break; |
4206 | } | |
c906108c | 4207 | |
6c95b8df PA |
4208 | |
4209 | /* For backward compatibility, don't display inferiors unless there | |
4210 | are several. */ | |
4211 | if (loc != NULL | |
4212 | && !header_of_multiple | |
4213 | && (allflag | |
4214 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4215 | && (number_of_program_spaces () > 1 | |
4216 | || number_of_inferiors () > 1) | |
4217 | && loc->owner->type != bp_catchpoint))) | |
4218 | { | |
4219 | struct inferior *inf; | |
4220 | int first = 1; | |
4221 | ||
4222 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4223 | { | |
4224 | if (inf->pspace == loc->pspace) | |
4225 | { | |
4226 | if (first) | |
4227 | { | |
4228 | first = 0; | |
4229 | ui_out_text (uiout, " inf "); | |
4230 | } | |
4231 | else | |
4232 | ui_out_text (uiout, ", "); | |
4233 | ui_out_text (uiout, plongest (inf->num)); | |
4234 | } | |
4235 | } | |
4236 | } | |
4237 | ||
4a306c9a | 4238 | if (!part_of_multiple) |
c4093a6a | 4239 | { |
4a306c9a JB |
4240 | if (b->thread != -1) |
4241 | { | |
4242 | /* FIXME: This seems to be redundant and lost here; see the | |
4243 | "stop only in" line a little further down. */ | |
4244 | ui_out_text (uiout, " thread "); | |
4245 | ui_out_field_int (uiout, "thread", b->thread); | |
4246 | } | |
4247 | else if (b->task != 0) | |
4248 | { | |
4249 | ui_out_text (uiout, " task "); | |
4250 | ui_out_field_int (uiout, "task", b->task); | |
4251 | } | |
c4093a6a JM |
4252 | } |
4253 | ||
8b93c638 | 4254 | ui_out_text (uiout, "\n"); |
c4093a6a | 4255 | |
0d381245 | 4256 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4257 | { |
4258 | annotate_field (6); | |
8b93c638 | 4259 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4260 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4261 | the frame ID. */ | |
5af949e3 UW |
4262 | ui_out_field_core_addr (uiout, "frame", |
4263 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4264 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4265 | } |
4266 | ||
0d381245 | 4267 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4268 | { |
f7f9143b JB |
4269 | /* We do not print the condition for Ada exception catchpoints |
4270 | because the condition is an internal implementation detail | |
4271 | that we do not want to expose to the user. */ | |
c4093a6a | 4272 | annotate_field (7); |
7a697b8d | 4273 | if (tracepoint_type (b)) |
1042e4c0 SS |
4274 | ui_out_text (uiout, "\ttrace only if "); |
4275 | else | |
4276 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4277 | ui_out_field_string (uiout, "cond", b->cond_string); |
4278 | ui_out_text (uiout, "\n"); | |
4279 | } | |
4280 | ||
0d381245 | 4281 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4282 | { |
4283 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4284 | ui_out_text (uiout, "\tstop only in thread "); |
4285 | ui_out_field_int (uiout, "thread", b->thread); | |
4286 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4287 | } |
4288 | ||
63c715c6 | 4289 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4290 | { |
4291 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4292 | if (ep_is_catchpoint (b)) |
4293 | ui_out_text (uiout, "\tcatchpoint"); | |
4294 | else | |
4295 | ui_out_text (uiout, "\tbreakpoint"); | |
4296 | ui_out_text (uiout, " already hit "); | |
4297 | ui_out_field_int (uiout, "times", b->hit_count); | |
4298 | if (b->hit_count == 1) | |
4299 | ui_out_text (uiout, " time\n"); | |
4300 | else | |
4301 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4302 | } |
4303 | ||
fb40c209 AC |
4304 | /* Output the count also if it is zero, but only if this is |
4305 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4306 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4307 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4308 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4309 | |
0d381245 | 4310 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4311 | { |
4312 | annotate_field (8); | |
8b93c638 JM |
4313 | ui_out_text (uiout, "\tignore next "); |
4314 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4315 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4316 | } |
059fb39f PM |
4317 | |
4318 | l = b->commands; | |
4319 | if (!part_of_multiple && l) | |
c4093a6a | 4320 | { |
3b31d625 EZ |
4321 | struct cleanup *script_chain; |
4322 | ||
c4093a6a | 4323 | annotate_field (9); |
3b31d625 | 4324 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4325 | print_command_lines (uiout, l, 4); |
3b31d625 | 4326 | do_cleanups (script_chain); |
c4093a6a | 4327 | } |
d24317b4 | 4328 | |
1042e4c0 SS |
4329 | if (!part_of_multiple && b->pass_count) |
4330 | { | |
4331 | annotate_field (10); | |
4332 | ui_out_text (uiout, "\tpass count "); | |
4333 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4334 | ui_out_text (uiout, " \n"); | |
4335 | } | |
4336 | ||
4337 | if (!part_of_multiple && b->step_count) | |
4338 | { | |
4339 | annotate_field (11); | |
4340 | ui_out_text (uiout, "\tstep count "); | |
4341 | ui_out_field_int (uiout, "step", b->step_count); | |
4342 | ui_out_text (uiout, " \n"); | |
4343 | } | |
4344 | ||
4345 | if (!part_of_multiple && b->actions) | |
4346 | { | |
4347 | struct action_line *action; | |
4348 | annotate_field (12); | |
4349 | for (action = b->actions; action; action = action->next) | |
4350 | { | |
4351 | ui_out_text (uiout, " A\t"); | |
4352 | ui_out_text (uiout, action->action); | |
4353 | ui_out_text (uiout, "\n"); | |
4354 | } | |
4355 | } | |
4356 | ||
d24317b4 VP |
4357 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4358 | { | |
4359 | if (b->addr_string) | |
4360 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4361 | else if (b->exp_string) | |
4362 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4363 | } | |
4364 | ||
3b31d625 | 4365 | do_cleanups (bkpt_chain); |
8b93c638 | 4366 | do_cleanups (old_chain); |
c4093a6a | 4367 | } |
c5aa993b | 4368 | |
0d381245 VP |
4369 | static void |
4370 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4371 | struct bp_location **last_loc, int print_address_bits, |
4372 | int allflag) | |
0d381245 | 4373 | { |
6c95b8df PA |
4374 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4375 | print_address_bits, allflag); | |
0d381245 VP |
4376 | |
4377 | /* If this breakpoint has custom print function, | |
4378 | it's already printed. Otherwise, print individual | |
4379 | locations, if any. */ | |
4380 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4381 | { | |
4382 | /* If breakpoint has a single location that is | |
4383 | disabled, we print it as if it had | |
4384 | several locations, since otherwise it's hard to | |
4385 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4386 | situation. |
4387 | Note that while hardware watchpoints have | |
4388 | several locations internally, that's no a property | |
4389 | exposed to user. */ | |
0d381245 | 4390 | if (b->loc |
a5606eee | 4391 | && !is_hardware_watchpoint (b) |
0d381245 | 4392 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4393 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4394 | { |
4395 | struct bp_location *loc; | |
4396 | int n = 1; | |
4397 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4398 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4399 | print_address_bits, allflag); |
0d381245 VP |
4400 | } |
4401 | } | |
4402 | } | |
4403 | ||
a6d9a66e UW |
4404 | static int |
4405 | breakpoint_address_bits (struct breakpoint *b) | |
4406 | { | |
4407 | int print_address_bits = 0; | |
4408 | struct bp_location *loc; | |
4409 | ||
4410 | for (loc = b->loc; loc; loc = loc->next) | |
4411 | { | |
c561c276 | 4412 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
4413 | if (addr_bit > print_address_bits) |
4414 | print_address_bits = addr_bit; | |
4415 | } | |
4416 | ||
4417 | return print_address_bits; | |
4418 | } | |
0d381245 | 4419 | |
c4093a6a JM |
4420 | struct captured_breakpoint_query_args |
4421 | { | |
4422 | int bnum; | |
4423 | }; | |
c5aa993b | 4424 | |
c4093a6a | 4425 | static int |
2b65245e | 4426 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4427 | { |
4428 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4429 | struct breakpoint *b; |
a6d9a66e | 4430 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
4431 | ALL_BREAKPOINTS (b) |
4432 | { | |
4433 | if (args->bnum == b->number) | |
c5aa993b | 4434 | { |
a6d9a66e | 4435 | int print_address_bits = breakpoint_address_bits (b); |
6c95b8df | 4436 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4437 | return GDB_RC_OK; |
c5aa993b | 4438 | } |
c4093a6a JM |
4439 | } |
4440 | return GDB_RC_NONE; | |
4441 | } | |
c5aa993b | 4442 | |
c4093a6a | 4443 | enum gdb_rc |
ce43223b | 4444 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4445 | { |
4446 | struct captured_breakpoint_query_args args; | |
4447 | args.bnum = bnum; | |
4448 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4449 | an error. */ | |
b0b13bb4 DJ |
4450 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4451 | error_message, RETURN_MASK_ALL) < 0) | |
4452 | return GDB_RC_FAIL; | |
4453 | else | |
4454 | return GDB_RC_OK; | |
c4093a6a | 4455 | } |
c5aa993b | 4456 | |
7f3b0473 AC |
4457 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4458 | catchpoints, et.al.). */ | |
4459 | ||
4460 | static int | |
4461 | user_settable_breakpoint (const struct breakpoint *b) | |
4462 | { | |
4463 | return (b->type == bp_breakpoint | |
ce78b96d | 4464 | || b->type == bp_catchpoint |
7f3b0473 | 4465 | || b->type == bp_hardware_breakpoint |
7a697b8d | 4466 | || tracepoint_type (b) |
7f3b0473 AC |
4467 | || b->type == bp_watchpoint |
4468 | || b->type == bp_read_watchpoint | |
4469 | || b->type == bp_access_watchpoint | |
4470 | || b->type == bp_hardware_watchpoint); | |
4471 | } | |
4472 | ||
4473 | /* Print information on user settable breakpoint (watchpoint, etc) | |
4474 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
4475 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 4476 | |
c4093a6a | 4477 | static void |
fba45db2 | 4478 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 4479 | { |
52f0bd74 | 4480 | struct breakpoint *b; |
a6d9a66e | 4481 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4482 | int nr_printable_breakpoints; |
3b31d625 | 4483 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4484 | struct value_print_options opts; |
a6d9a66e | 4485 | int print_address_bits = 0; |
c4093a6a | 4486 | |
79a45b7d TT |
4487 | get_user_print_options (&opts); |
4488 | ||
a6d9a66e UW |
4489 | /* Compute the number of rows in the table, as well as the |
4490 | size required for address fields. */ | |
7f3b0473 AC |
4491 | nr_printable_breakpoints = 0; |
4492 | ALL_BREAKPOINTS (b) | |
4493 | if (bnum == -1 | |
4494 | || bnum == b->number) | |
4495 | { | |
4496 | if (allflag || user_settable_breakpoint (b)) | |
a6d9a66e UW |
4497 | { |
4498 | int addr_bit = breakpoint_address_bits (b); | |
4499 | if (addr_bit > print_address_bits) | |
4500 | print_address_bits = addr_bit; | |
4501 | ||
4502 | nr_printable_breakpoints++; | |
4503 | } | |
7f3b0473 AC |
4504 | } |
4505 | ||
79a45b7d | 4506 | if (opts.addressprint) |
3b31d625 EZ |
4507 | bkpttbl_chain |
4508 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4509 | "BreakpointTable"); | |
8b93c638 | 4510 | else |
3b31d625 EZ |
4511 | bkpttbl_chain |
4512 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4513 | "BreakpointTable"); | |
8b93c638 | 4514 | |
7f3b0473 | 4515 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4516 | annotate_breakpoints_headers (); |
4517 | if (nr_printable_breakpoints > 0) | |
4518 | annotate_field (0); | |
0d381245 | 4519 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4520 | if (nr_printable_breakpoints > 0) |
4521 | annotate_field (1); | |
4522 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4523 | if (nr_printable_breakpoints > 0) | |
4524 | annotate_field (2); | |
4525 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4526 | if (nr_printable_breakpoints > 0) | |
4527 | annotate_field (3); | |
54e52265 | 4528 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4529 | if (opts.addressprint) |
7f3b0473 | 4530 | { |
d7faa9e7 AC |
4531 | if (nr_printable_breakpoints > 0) |
4532 | annotate_field (4); | |
a6d9a66e | 4533 | if (print_address_bits <= 32) |
b25959ec | 4534 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4535 | else |
b25959ec | 4536 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4537 | } |
d7faa9e7 AC |
4538 | if (nr_printable_breakpoints > 0) |
4539 | annotate_field (5); | |
4540 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4541 | ui_out_table_body (uiout); | |
4542 | if (nr_printable_breakpoints > 0) | |
4543 | annotate_breakpoints_table (); | |
7f3b0473 | 4544 | |
c4093a6a JM |
4545 | ALL_BREAKPOINTS (b) |
4546 | if (bnum == -1 | |
4547 | || bnum == b->number) | |
4548 | { | |
4549 | /* We only print out user settable breakpoints unless the | |
4550 | allflag is set. */ | |
7f3b0473 | 4551 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 4552 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a JM |
4553 | } |
4554 | ||
3b31d625 | 4555 | do_cleanups (bkpttbl_chain); |
698384cd | 4556 | |
7f3b0473 | 4557 | if (nr_printable_breakpoints == 0) |
c906108c | 4558 | { |
8b93c638 JM |
4559 | if (bnum == -1) |
4560 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4561 | else | |
4562 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4563 | bnum); | |
c906108c SS |
4564 | } |
4565 | else | |
c4093a6a | 4566 | { |
a6d9a66e UW |
4567 | if (last_loc && !server_command) |
4568 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 4569 | } |
c906108c | 4570 | |
c4093a6a JM |
4571 | /* FIXME? Should this be moved up so that it is only called when |
4572 | there have been breakpoints? */ | |
c906108c SS |
4573 | annotate_breakpoints_table_end (); |
4574 | } | |
4575 | ||
c906108c | 4576 | static void |
fba45db2 | 4577 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4578 | { |
4579 | int bnum = -1; | |
4580 | ||
4581 | if (bnum_exp) | |
bb518678 | 4582 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4583 | |
4584 | breakpoint_1 (bnum, 0); | |
4585 | } | |
4586 | ||
7a292a7a | 4587 | static void |
fba45db2 | 4588 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4589 | { |
4590 | int bnum = -1; | |
4591 | ||
4592 | if (bnum_exp) | |
bb518678 | 4593 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4594 | |
4595 | breakpoint_1 (bnum, 1); | |
4596 | } | |
4597 | ||
0d381245 | 4598 | static int |
714835d5 | 4599 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 4600 | struct program_space *pspace, |
714835d5 | 4601 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
4602 | { |
4603 | struct bp_location *bl = b->loc; | |
4604 | for (; bl; bl = bl->next) | |
4605 | { | |
6c95b8df PA |
4606 | if (bl->pspace == pspace |
4607 | && bl->address == pc | |
0d381245 VP |
4608 | && (!overlay_debugging || bl->section == section)) |
4609 | return 1; | |
4610 | } | |
4611 | return 0; | |
4612 | } | |
4613 | ||
6c95b8df PA |
4614 | /* Print a message describing any breakpoints set at PC. This |
4615 | concerns with logical breakpoints, so we match program spaces, not | |
4616 | address spaces. */ | |
c906108c SS |
4617 | |
4618 | static void | |
6c95b8df PA |
4619 | describe_other_breakpoints (struct gdbarch *gdbarch, |
4620 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 4621 | struct obj_section *section, int thread) |
c906108c | 4622 | { |
52f0bd74 AC |
4623 | int others = 0; |
4624 | struct breakpoint *b; | |
c906108c SS |
4625 | |
4626 | ALL_BREAKPOINTS (b) | |
6c95b8df | 4627 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
4628 | if (others > 0) |
4629 | { | |
a3f17187 AC |
4630 | if (others == 1) |
4631 | printf_filtered (_("Note: breakpoint ")); | |
4632 | else /* if (others == ???) */ | |
4633 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4634 | ALL_BREAKPOINTS (b) |
6c95b8df | 4635 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
4636 | { |
4637 | others--; | |
4638 | printf_filtered ("%d", b->number); | |
4639 | if (b->thread == -1 && thread != -1) | |
4640 | printf_filtered (" (all threads)"); | |
4641 | else if (b->thread != -1) | |
4642 | printf_filtered (" (thread %d)", b->thread); | |
4643 | printf_filtered ("%s%s ", | |
059fb39f | 4644 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
4645 | || b->enable_state == bp_call_disabled |
4646 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
4647 | ? " (disabled)" |
4648 | : b->enable_state == bp_permanent | |
4649 | ? " (permanent)" | |
4650 | : ""), | |
4651 | (others > 1) ? "," | |
4652 | : ((others == 1) ? " and" : "")); | |
4653 | } | |
a3f17187 | 4654 | printf_filtered (_("also set at pc ")); |
5af949e3 | 4655 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
4656 | printf_filtered (".\n"); |
4657 | } | |
4658 | } | |
4659 | \f | |
4660 | /* Set the default place to put a breakpoint | |
4661 | for the `break' command with no arguments. */ | |
4662 | ||
4663 | void | |
6c95b8df PA |
4664 | set_default_breakpoint (int valid, struct program_space *pspace, |
4665 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 4666 | int line) |
c906108c SS |
4667 | { |
4668 | default_breakpoint_valid = valid; | |
6c95b8df | 4669 | default_breakpoint_pspace = pspace; |
c906108c SS |
4670 | default_breakpoint_address = addr; |
4671 | default_breakpoint_symtab = symtab; | |
4672 | default_breakpoint_line = line; | |
4673 | } | |
4674 | ||
e4f237da KB |
4675 | /* Return true iff it is meaningful to use the address member of |
4676 | BPT. For some breakpoint types, the address member is irrelevant | |
4677 | and it makes no sense to attempt to compare it to other addresses | |
4678 | (or use it for any other purpose either). | |
4679 | ||
4680 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
4681 | have a zero valued address and we don't want to mark breakpoints of any of |
4682 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
4683 | |
4684 | bp_watchpoint | |
2d134ed3 PA |
4685 | bp_catchpoint |
4686 | ||
4687 | */ | |
e4f237da KB |
4688 | |
4689 | static int | |
4690 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4691 | { | |
4692 | enum bptype type = bpt->type; | |
4693 | ||
2d134ed3 PA |
4694 | return (type != bp_watchpoint && type != bp_catchpoint); |
4695 | } | |
4696 | ||
4697 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
4698 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
4699 | ||
4700 | static int | |
4701 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
4702 | { | |
4703 | return (loc1->owner->type == loc2->owner->type | |
4704 | && loc1->pspace->aspace == loc2->pspace->aspace | |
4705 | && loc1->address == loc2->address | |
4706 | && loc1->length == loc2->length); | |
e4f237da KB |
4707 | } |
4708 | ||
6c95b8df PA |
4709 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
4710 | same breakpoint location. In most targets, this can only be true | |
4711 | if ASPACE1 matches ASPACE2. On targets that have global | |
4712 | breakpoints, the address space doesn't really matter. */ | |
4713 | ||
4714 | static int | |
4715 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
4716 | struct address_space *aspace2, CORE_ADDR addr2) | |
4717 | { | |
4718 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
4719 | || aspace1 == aspace2) | |
4720 | && addr1 == addr2); | |
4721 | } | |
4722 | ||
2d134ed3 PA |
4723 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
4724 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
4725 | represent the same location. */ | |
4726 | ||
4727 | static int | |
4728 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
4729 | { | |
4730 | int hw_point1 = is_hardware_watchpoint (loc1->owner); | |
4731 | int hw_point2 = is_hardware_watchpoint (loc2->owner); | |
4732 | ||
4733 | if (hw_point1 != hw_point2) | |
4734 | return 0; | |
4735 | else if (hw_point1) | |
4736 | return watchpoint_locations_match (loc1, loc2); | |
4737 | else | |
4738 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
4739 | loc2->pspace->aspace, loc2->address); | |
4740 | } | |
4741 | ||
76897487 KB |
4742 | static void |
4743 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4744 | int bnum, int have_bnum) | |
4745 | { | |
4746 | char astr1[40]; | |
4747 | char astr2[40]; | |
4748 | ||
bb599908 PH |
4749 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4750 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4751 | if (have_bnum) |
8a3fe4f8 | 4752 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4753 | bnum, astr1, astr2); |
4754 | else | |
8a3fe4f8 | 4755 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4756 | } |
4757 | ||
4758 | /* Adjust a breakpoint's address to account for architectural constraints | |
4759 | on breakpoint placement. Return the adjusted address. Note: Very | |
4760 | few targets require this kind of adjustment. For most targets, | |
4761 | this function is simply the identity function. */ | |
4762 | ||
4763 | static CORE_ADDR | |
a6d9a66e UW |
4764 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
4765 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 4766 | { |
a6d9a66e | 4767 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
4768 | { |
4769 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4770 | return bpaddr; | |
4771 | } | |
88f7da05 KB |
4772 | else if (bptype == bp_watchpoint |
4773 | || bptype == bp_hardware_watchpoint | |
4774 | || bptype == bp_read_watchpoint | |
4775 | || bptype == bp_access_watchpoint | |
fe798b75 | 4776 | || bptype == bp_catchpoint) |
88f7da05 KB |
4777 | { |
4778 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4779 | have their addresses modified. */ | |
4780 | return bpaddr; | |
4781 | } | |
76897487 KB |
4782 | else |
4783 | { | |
4784 | CORE_ADDR adjusted_bpaddr; | |
4785 | ||
4786 | /* Some targets have architectural constraints on the placement | |
4787 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 4788 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
4789 | |
4790 | /* An adjusted breakpoint address can significantly alter | |
4791 | a user's expectations. Print a warning if an adjustment | |
4792 | is required. */ | |
4793 | if (adjusted_bpaddr != bpaddr) | |
4794 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4795 | ||
4796 | return adjusted_bpaddr; | |
4797 | } | |
4798 | } | |
4799 | ||
7cc221ef DJ |
4800 | /* Allocate a struct bp_location. */ |
4801 | ||
26bb91f3 | 4802 | static struct bp_location * |
39d61571 | 4803 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4804 | { |
4805 | struct bp_location *loc, *loc_p; | |
4806 | ||
4807 | loc = xmalloc (sizeof (struct bp_location)); | |
4808 | memset (loc, 0, sizeof (*loc)); | |
4809 | ||
e049a4b5 | 4810 | loc->owner = bpt; |
511a6cd4 | 4811 | loc->cond = NULL; |
0d381245 VP |
4812 | loc->shlib_disabled = 0; |
4813 | loc->enabled = 1; | |
e049a4b5 | 4814 | |
39d61571 | 4815 | switch (bpt->type) |
e049a4b5 DJ |
4816 | { |
4817 | case bp_breakpoint: | |
1042e4c0 | 4818 | case bp_tracepoint: |
7a697b8d | 4819 | case bp_fast_tracepoint: |
e049a4b5 DJ |
4820 | case bp_until: |
4821 | case bp_finish: | |
4822 | case bp_longjmp: | |
4823 | case bp_longjmp_resume: | |
4824 | case bp_step_resume: | |
e049a4b5 DJ |
4825 | case bp_watchpoint_scope: |
4826 | case bp_call_dummy: | |
4827 | case bp_shlib_event: | |
4828 | case bp_thread_event: | |
4829 | case bp_overlay_event: | |
4efc6507 | 4830 | case bp_jit_event: |
0fd8e87f | 4831 | case bp_longjmp_master: |
e049a4b5 DJ |
4832 | loc->loc_type = bp_loc_software_breakpoint; |
4833 | break; | |
4834 | case bp_hardware_breakpoint: | |
4835 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4836 | break; | |
4837 | case bp_hardware_watchpoint: | |
4838 | case bp_read_watchpoint: | |
4839 | case bp_access_watchpoint: | |
4840 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4841 | break; | |
4842 | case bp_watchpoint: | |
ce78b96d | 4843 | case bp_catchpoint: |
e049a4b5 DJ |
4844 | loc->loc_type = bp_loc_other; |
4845 | break; | |
4846 | default: | |
e2e0b3e5 | 4847 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4848 | } |
4849 | ||
7cc221ef DJ |
4850 | return loc; |
4851 | } | |
4852 | ||
fe3f5fa8 VP |
4853 | static void free_bp_location (struct bp_location *loc) |
4854 | { | |
4855 | if (loc->cond) | |
4856 | xfree (loc->cond); | |
74960c60 VP |
4857 | |
4858 | if (loc->function_name) | |
4859 | xfree (loc->function_name); | |
4860 | ||
fe3f5fa8 VP |
4861 | xfree (loc); |
4862 | } | |
4863 | ||
0d381245 VP |
4864 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4865 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 4866 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 4867 | |
c40e75cd | 4868 | static struct breakpoint * |
a6d9a66e UW |
4869 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
4870 | enum bptype bptype) | |
c906108c | 4871 | { |
52f0bd74 | 4872 | struct breakpoint *b, *b1; |
c906108c SS |
4873 | |
4874 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4875 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4876 | |
4d28f7a8 | 4877 | b->type = bptype; |
a6d9a66e | 4878 | b->gdbarch = gdbarch; |
c906108c SS |
4879 | b->language = current_language->la_language; |
4880 | b->input_radix = input_radix; | |
4881 | b->thread = -1; | |
b5de0fa7 | 4882 | b->enable_state = bp_enabled; |
c906108c SS |
4883 | b->next = 0; |
4884 | b->silent = 0; | |
4885 | b->ignore_count = 0; | |
4886 | b->commands = NULL; | |
818dd999 | 4887 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4888 | b->forked_inferior_pid = null_ptid; |
c906108c | 4889 | b->exec_pathname = NULL; |
a96d9b2e | 4890 | b->syscalls_to_be_caught = NULL; |
3086aeae | 4891 | b->ops = NULL; |
0d381245 | 4892 | b->condition_not_parsed = 0; |
c906108c SS |
4893 | |
4894 | /* Add this breakpoint to the end of the chain | |
4895 | so that a list of breakpoints will come out in order | |
4896 | of increasing numbers. */ | |
4897 | ||
4898 | b1 = breakpoint_chain; | |
4899 | if (b1 == 0) | |
4900 | breakpoint_chain = b; | |
4901 | else | |
4902 | { | |
4903 | while (b1->next) | |
4904 | b1 = b1->next; | |
4905 | b1->next = b; | |
4906 | } | |
0d381245 VP |
4907 | return b; |
4908 | } | |
4909 | ||
4910 | /* Initialize loc->function_name. */ | |
4911 | static void | |
4912 | set_breakpoint_location_function (struct bp_location *loc) | |
4913 | { | |
4914 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 | 4915 | || loc->owner->type == bp_hardware_breakpoint |
7a697b8d | 4916 | || tracepoint_type (loc->owner)) |
0d381245 VP |
4917 | { |
4918 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4919 | NULL, NULL); | |
4920 | if (loc->function_name) | |
4921 | loc->function_name = xstrdup (loc->function_name); | |
4922 | } | |
4923 | } | |
4924 | ||
a6d9a66e UW |
4925 | /* Attempt to determine architecture of location identified by SAL. */ |
4926 | static struct gdbarch * | |
4927 | get_sal_arch (struct symtab_and_line sal) | |
4928 | { | |
4929 | if (sal.section) | |
4930 | return get_objfile_arch (sal.section->objfile); | |
4931 | if (sal.symtab) | |
4932 | return get_objfile_arch (sal.symtab->objfile); | |
4933 | ||
4934 | return NULL; | |
4935 | } | |
4936 | ||
0d381245 VP |
4937 | /* set_raw_breakpoint is a low level routine for allocating and |
4938 | partially initializing a breakpoint of type BPTYPE. The newly | |
4939 | created breakpoint's address, section, source file name, and line | |
4940 | number are provided by SAL. The newly created and partially | |
4941 | initialized breakpoint is added to the breakpoint chain and | |
4942 | is also returned as the value of this function. | |
4943 | ||
4944 | It is expected that the caller will complete the initialization of | |
4945 | the newly created breakpoint struct as well as output any status | |
4946 | information regarding the creation of a new breakpoint. In | |
4947 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4948 | number! Care should be taken to not allow an error to occur | |
4949 | prior to completing the initialization of the breakpoint. If this | |
4950 | should happen, a bogus breakpoint will be left on the chain. */ | |
4951 | ||
63c252f8 | 4952 | struct breakpoint * |
a6d9a66e UW |
4953 | set_raw_breakpoint (struct gdbarch *gdbarch, |
4954 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 4955 | { |
a6d9a66e | 4956 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 4957 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
4958 | struct gdbarch *loc_gdbarch; |
4959 | ||
4960 | loc_gdbarch = get_sal_arch (sal); | |
4961 | if (!loc_gdbarch) | |
4962 | loc_gdbarch = b->gdbarch; | |
0d381245 | 4963 | |
6c95b8df PA |
4964 | if (bptype != bp_catchpoint) |
4965 | gdb_assert (sal.pspace != NULL); | |
4966 | ||
0d381245 VP |
4967 | /* Adjust the breakpoint's address prior to allocating a location. |
4968 | Once we call allocate_bp_location(), that mostly uninitialized | |
4969 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4970 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4971 | not want its scan of the location chain to find a breakpoint and |
4972 | location that's only been partially initialized. */ | |
a6d9a66e | 4973 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 4974 | |
39d61571 | 4975 | b->loc = allocate_bp_location (b); |
a6d9a66e | 4976 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
4977 | b->loc->requested_address = sal.pc; |
4978 | b->loc->address = adjusted_address; | |
6c95b8df PA |
4979 | b->loc->pspace = sal.pspace; |
4980 | ||
4981 | /* Store the program space that was used to set the breakpoint, for | |
4982 | breakpoint resetting. */ | |
4983 | b->pspace = sal.pspace; | |
0d381245 VP |
4984 | |
4985 | if (sal.symtab == NULL) | |
4986 | b->source_file = NULL; | |
4987 | else | |
1b36a34b | 4988 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4989 | b->loc->section = sal.section; |
4990 | b->line_number = sal.line; | |
4991 | ||
4992 | set_breakpoint_location_function (b->loc); | |
c906108c | 4993 | |
c906108c SS |
4994 | breakpoints_changed (); |
4995 | ||
4996 | return b; | |
4997 | } | |
4998 | ||
c2c6d25f JM |
4999 | |
5000 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5001 | instruction, hard-wired into the inferior's code. */ | |
5002 | void | |
5003 | make_breakpoint_permanent (struct breakpoint *b) | |
5004 | { | |
0d381245 | 5005 | struct bp_location *bl; |
b5de0fa7 | 5006 | b->enable_state = bp_permanent; |
c2c6d25f | 5007 | |
0d381245 VP |
5008 | /* By definition, permanent breakpoints are already present in the code. |
5009 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5010 | is called in just one place, so it's hard to say if it's reasonable | |
5011 | to have permanent breakpoint with multiple locations or not, | |
5012 | but it's easy to implmement. */ | |
5013 | for (bl = b->loc; bl; bl = bl->next) | |
5014 | bl->inserted = 1; | |
c2c6d25f JM |
5015 | } |
5016 | ||
53a5351d | 5017 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5018 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5019 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5020 | ||
5021 | void | |
0fd8e87f | 5022 | set_longjmp_breakpoint (int thread) |
c906108c | 5023 | { |
0fd8e87f UW |
5024 | struct breakpoint *b, *temp; |
5025 | ||
5026 | /* To avoid having to rescan all objfile symbols at every step, | |
5027 | we maintain a list of continually-inserted but always disabled | |
5028 | longjmp "master" breakpoints. Here, we simply create momentary | |
5029 | clones of those and enable them for the requested thread. */ | |
5030 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5031 | if (b->pspace == current_program_space |
5032 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5033 | { |
5034 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5035 | clone->type = bp_longjmp; | |
5036 | clone->thread = thread; | |
5037 | } | |
c906108c SS |
5038 | } |
5039 | ||
611c83ae | 5040 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5041 | void |
611c83ae | 5042 | delete_longjmp_breakpoint (int thread) |
c906108c | 5043 | { |
611c83ae | 5044 | struct breakpoint *b, *temp; |
c906108c | 5045 | |
611c83ae PA |
5046 | ALL_BREAKPOINTS_SAFE (b, temp) |
5047 | if (b->type == bp_longjmp) | |
5048 | { | |
5049 | if (b->thread == thread) | |
5050 | delete_breakpoint (b); | |
5051 | } | |
c906108c SS |
5052 | } |
5053 | ||
1900040c MS |
5054 | void |
5055 | enable_overlay_breakpoints (void) | |
5056 | { | |
52f0bd74 | 5057 | struct breakpoint *b; |
1900040c MS |
5058 | |
5059 | ALL_BREAKPOINTS (b) | |
5060 | if (b->type == bp_overlay_event) | |
5061 | { | |
5062 | b->enable_state = bp_enabled; | |
b60e7edf | 5063 | update_global_location_list (1); |
c02f5703 | 5064 | overlay_events_enabled = 1; |
1900040c MS |
5065 | } |
5066 | } | |
5067 | ||
5068 | void | |
5069 | disable_overlay_breakpoints (void) | |
5070 | { | |
52f0bd74 | 5071 | struct breakpoint *b; |
1900040c MS |
5072 | |
5073 | ALL_BREAKPOINTS (b) | |
5074 | if (b->type == bp_overlay_event) | |
5075 | { | |
5076 | b->enable_state = bp_disabled; | |
b60e7edf | 5077 | update_global_location_list (0); |
c02f5703 | 5078 | overlay_events_enabled = 0; |
1900040c MS |
5079 | } |
5080 | } | |
5081 | ||
c4093a6a | 5082 | struct breakpoint * |
a6d9a66e | 5083 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5084 | { |
5085 | struct breakpoint *b; | |
c4093a6a | 5086 | |
a6d9a66e | 5087 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5088 | |
b5de0fa7 | 5089 | b->enable_state = bp_enabled; |
c4093a6a | 5090 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5091 | b->addr_string |
5092 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5093 | |
b60e7edf | 5094 | update_global_location_list_nothrow (1); |
74960c60 | 5095 | |
c4093a6a JM |
5096 | return b; |
5097 | } | |
5098 | ||
5099 | void | |
5100 | remove_thread_event_breakpoints (void) | |
5101 | { | |
5102 | struct breakpoint *b, *temp; | |
5103 | ||
5104 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5105 | if (b->type == bp_thread_event |
5106 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5107 | delete_breakpoint (b); |
5108 | } | |
5109 | ||
0101ce28 JJ |
5110 | struct captured_parse_breakpoint_args |
5111 | { | |
5112 | char **arg_p; | |
5113 | struct symtabs_and_lines *sals_p; | |
5114 | char ***addr_string_p; | |
5115 | int *not_found_ptr; | |
5116 | }; | |
5117 | ||
5118 | struct lang_and_radix | |
5119 | { | |
5120 | enum language lang; | |
5121 | int radix; | |
5122 | }; | |
5123 | ||
4efc6507 DE |
5124 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5125 | ||
5126 | struct breakpoint * | |
5127 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5128 | { | |
5129 | struct breakpoint *b; | |
5130 | ||
5131 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5132 | update_global_location_list_nothrow (1); | |
5133 | return b; | |
5134 | } | |
0101ce28 | 5135 | |
cae688ec JJ |
5136 | void |
5137 | remove_solib_event_breakpoints (void) | |
5138 | { | |
5139 | struct breakpoint *b, *temp; | |
5140 | ||
5141 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5142 | if (b->type == bp_shlib_event |
5143 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5144 | delete_breakpoint (b); |
5145 | } | |
5146 | ||
5147 | struct breakpoint * | |
a6d9a66e | 5148 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5149 | { |
5150 | struct breakpoint *b; | |
5151 | ||
a6d9a66e | 5152 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5153 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5154 | return b; |
5155 | } | |
5156 | ||
5157 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5158 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5159 | ||
5160 | void | |
cb851954 | 5161 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5162 | { |
876fa593 | 5163 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5164 | |
876fa593 | 5165 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5166 | { |
0d381245 VP |
5167 | struct breakpoint *b = loc->owner; |
5168 | /* We apply the check to all breakpoints, including disabled | |
5169 | for those with loc->duplicate set. This is so that when breakpoint | |
5170 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5171 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5172 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
5173 | if (((b->type == bp_breakpoint) |
5174 | || (b->type == bp_hardware_breakpoint) | |
7a697b8d | 5175 | || (tracepoint_type (b))) |
6c95b8df | 5176 | && loc->pspace == current_program_space |
0d381245 | 5177 | && !loc->shlib_disabled |
a77053c2 | 5178 | #ifdef PC_SOLIB |
0d381245 | 5179 | && PC_SOLIB (loc->address) |
a77053c2 | 5180 | #else |
6c95b8df | 5181 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5182 | #endif |
5183 | ) | |
0d381245 VP |
5184 | { |
5185 | loc->shlib_disabled = 1; | |
5186 | } | |
cae688ec JJ |
5187 | } |
5188 | } | |
5189 | ||
84acb35a JJ |
5190 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5191 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5192 | ||
75149521 | 5193 | static void |
84acb35a JJ |
5194 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5195 | { | |
876fa593 | 5196 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5197 | int disabled_shlib_breaks = 0; |
5198 | ||
c86cf029 VP |
5199 | /* SunOS a.out shared libraries are always mapped, so do not |
5200 | disable breakpoints; they will only be reported as unloaded | |
5201 | through clear_solib when GDB discards its shared library | |
5202 | list. See clear_solib for more information. */ | |
5203 | if (exec_bfd != NULL | |
5204 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5205 | return; | |
5206 | ||
876fa593 | 5207 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5208 | { |
0d381245 VP |
5209 | struct breakpoint *b = loc->owner; |
5210 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
5211 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5212 | && solib->pspace == loc->pspace |
e2dd7057 PP |
5213 | && !loc->shlib_disabled |
5214 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
5215 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 5216 | { |
e2dd7057 PP |
5217 | loc->shlib_disabled = 1; |
5218 | /* At this point, we cannot rely on remove_breakpoint | |
5219 | succeeding so we must mark the breakpoint as not inserted | |
5220 | to prevent future errors occurring in remove_breakpoints. */ | |
5221 | loc->inserted = 0; | |
5222 | if (!disabled_shlib_breaks) | |
5223 | { | |
5224 | target_terminal_ours_for_output (); | |
5225 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5226 | solib->so_name); | |
84acb35a | 5227 | } |
e2dd7057 | 5228 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5229 | } |
5230 | } | |
84acb35a JJ |
5231 | } |
5232 | ||
ce78b96d JB |
5233 | /* FORK & VFORK catchpoints. */ |
5234 | ||
5235 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5236 | ||
c906108c | 5237 | static void |
ce78b96d JB |
5238 | insert_catch_fork (struct breakpoint *b) |
5239 | { | |
5240 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5241 | } | |
5242 | ||
5243 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5244 | ||
5245 | static int | |
5246 | remove_catch_fork (struct breakpoint *b) | |
5247 | { | |
5248 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5249 | } | |
5250 | ||
5251 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5252 | catchpoints. */ | |
5253 | ||
5254 | static int | |
5255 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5256 | { | |
5257 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5258 | } | |
5259 | ||
5260 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5261 | ||
5262 | static enum print_stop_action | |
5263 | print_it_catch_fork (struct breakpoint *b) | |
5264 | { | |
5265 | annotate_catchpoint (b->number); | |
5266 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5267 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5268 | return PRINT_SRC_AND_LOC; | |
5269 | } | |
5270 | ||
5271 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5272 | ||
5273 | static void | |
a6d9a66e | 5274 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5275 | { |
79a45b7d TT |
5276 | struct value_print_options opts; |
5277 | ||
5278 | get_user_print_options (&opts); | |
5279 | ||
ce78b96d JB |
5280 | /* Field 4, the address, is omitted (which makes the columns |
5281 | not line up too nicely with the headers, but the effect | |
5282 | is relatively readable). */ | |
79a45b7d | 5283 | if (opts.addressprint) |
ce78b96d JB |
5284 | ui_out_field_skip (uiout, "addr"); |
5285 | annotate_field (5); | |
5286 | ui_out_text (uiout, "fork"); | |
5287 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5288 | { | |
5289 | ui_out_text (uiout, ", process "); | |
5290 | ui_out_field_int (uiout, "what", | |
5291 | ptid_get_pid (b->forked_inferior_pid)); | |
5292 | ui_out_spaces (uiout, 1); | |
5293 | } | |
5294 | } | |
5295 | ||
5296 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5297 | catchpoints. */ | |
5298 | ||
5299 | static void | |
5300 | print_mention_catch_fork (struct breakpoint *b) | |
5301 | { | |
5302 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5303 | } | |
5304 | ||
5305 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
5306 | ||
5307 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5308 | { | |
5309 | insert_catch_fork, | |
5310 | remove_catch_fork, | |
5311 | breakpoint_hit_catch_fork, | |
5312 | print_it_catch_fork, | |
5313 | print_one_catch_fork, | |
5314 | print_mention_catch_fork | |
5315 | }; | |
5316 | ||
5317 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5318 | ||
5319 | static void | |
5320 | insert_catch_vfork (struct breakpoint *b) | |
5321 | { | |
5322 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5323 | } | |
5324 | ||
5325 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5326 | ||
5327 | static int | |
5328 | remove_catch_vfork (struct breakpoint *b) | |
5329 | { | |
5330 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5331 | } | |
5332 | ||
5333 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5334 | catchpoints. */ | |
5335 | ||
5336 | static int | |
5337 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5338 | { | |
5339 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5340 | } | |
5341 | ||
5342 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5343 | ||
5344 | static enum print_stop_action | |
5345 | print_it_catch_vfork (struct breakpoint *b) | |
5346 | { | |
5347 | annotate_catchpoint (b->number); | |
5348 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5349 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5350 | return PRINT_SRC_AND_LOC; | |
5351 | } | |
5352 | ||
5353 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5354 | ||
5355 | static void | |
a6d9a66e | 5356 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5357 | { |
79a45b7d TT |
5358 | struct value_print_options opts; |
5359 | ||
5360 | get_user_print_options (&opts); | |
ce78b96d JB |
5361 | /* Field 4, the address, is omitted (which makes the columns |
5362 | not line up too nicely with the headers, but the effect | |
5363 | is relatively readable). */ | |
79a45b7d | 5364 | if (opts.addressprint) |
ce78b96d JB |
5365 | ui_out_field_skip (uiout, "addr"); |
5366 | annotate_field (5); | |
5367 | ui_out_text (uiout, "vfork"); | |
5368 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5369 | { | |
5370 | ui_out_text (uiout, ", process "); | |
5371 | ui_out_field_int (uiout, "what", | |
5372 | ptid_get_pid (b->forked_inferior_pid)); | |
5373 | ui_out_spaces (uiout, 1); | |
5374 | } | |
5375 | } | |
5376 | ||
5377 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
5378 | catchpoints. */ | |
5379 | ||
5380 | static void | |
5381 | print_mention_catch_vfork (struct breakpoint *b) | |
5382 | { | |
5383 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
5384 | } | |
5385 | ||
5386 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
5387 | ||
5388 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
5389 | { | |
5390 | insert_catch_vfork, | |
5391 | remove_catch_vfork, | |
5392 | breakpoint_hit_catch_vfork, | |
5393 | print_it_catch_vfork, | |
5394 | print_one_catch_vfork, | |
5395 | print_mention_catch_vfork | |
5396 | }; | |
5397 | ||
a96d9b2e SDJ |
5398 | /* Implement the "insert" breakpoint_ops method for syscall |
5399 | catchpoints. */ | |
5400 | ||
5401 | static void | |
5402 | insert_catch_syscall (struct breakpoint *b) | |
5403 | { | |
5404 | struct inferior *inf = current_inferior (); | |
5405 | ||
5406 | ++inf->total_syscalls_count; | |
5407 | if (!b->syscalls_to_be_caught) | |
5408 | ++inf->any_syscall_count; | |
5409 | else | |
5410 | { | |
5411 | int i, iter; | |
5412 | for (i = 0; | |
5413 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5414 | i++) | |
5415 | { | |
5416 | int elem; | |
5417 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5418 | { | |
5419 | int old_size = VEC_length (int, inf->syscalls_counts); | |
5420 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
5421 | uintptr_t vec_addr; | |
5422 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
5423 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
5424 | vec_addr_offset; | |
5425 | memset ((void *) vec_addr, 0, | |
5426 | (iter + 1 - old_size) * sizeof (int)); | |
5427 | } | |
5428 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5429 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
5430 | } | |
5431 | } | |
5432 | ||
5433 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5434 | inf->total_syscalls_count != 0, | |
5435 | inf->any_syscall_count, | |
5436 | VEC_length (int, inf->syscalls_counts), | |
5437 | VEC_address (int, inf->syscalls_counts)); | |
5438 | } | |
5439 | ||
5440 | /* Implement the "remove" breakpoint_ops method for syscall | |
5441 | catchpoints. */ | |
5442 | ||
5443 | static int | |
5444 | remove_catch_syscall (struct breakpoint *b) | |
5445 | { | |
5446 | struct inferior *inf = current_inferior (); | |
5447 | ||
5448 | --inf->total_syscalls_count; | |
5449 | if (!b->syscalls_to_be_caught) | |
5450 | --inf->any_syscall_count; | |
5451 | else | |
5452 | { | |
5453 | int i, iter; | |
5454 | for (i = 0; | |
5455 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5456 | i++) | |
5457 | { | |
5458 | int elem; | |
5459 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5460 | /* Shouldn't happen. */ | |
5461 | continue; | |
5462 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5463 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
5464 | } | |
5465 | } | |
5466 | ||
5467 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5468 | inf->total_syscalls_count != 0, | |
5469 | inf->any_syscall_count, | |
5470 | VEC_length (int, inf->syscalls_counts), | |
5471 | VEC_address (int, inf->syscalls_counts)); | |
5472 | } | |
5473 | ||
5474 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
5475 | catchpoints. */ | |
5476 | ||
5477 | static int | |
5478 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
5479 | { | |
5480 | /* We must check if we are catching specific syscalls in this breakpoint. | |
5481 | If we are, then we must guarantee that the called syscall is the same | |
5482 | syscall we are catching. */ | |
5483 | int syscall_number = 0; | |
5484 | ||
5485 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
5486 | return 0; | |
5487 | ||
5488 | /* Now, checking if the syscall is the same. */ | |
5489 | if (b->syscalls_to_be_caught) | |
5490 | { | |
5491 | int i, iter; | |
5492 | for (i = 0; | |
5493 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5494 | i++) | |
5495 | if (syscall_number == iter) | |
5496 | break; | |
5497 | /* Not the same. */ | |
5498 | if (!iter) | |
5499 | return 0; | |
5500 | } | |
5501 | ||
5502 | return 1; | |
5503 | } | |
5504 | ||
5505 | /* Implement the "print_it" breakpoint_ops method for syscall | |
5506 | catchpoints. */ | |
5507 | ||
5508 | static enum print_stop_action | |
5509 | print_it_catch_syscall (struct breakpoint *b) | |
5510 | { | |
5511 | /* These are needed because we want to know in which state a | |
5512 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
5513 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
5514 | must print "called syscall" or "returned from syscall". */ | |
5515 | ptid_t ptid; | |
5516 | struct target_waitstatus last; | |
5517 | struct syscall s; | |
5518 | struct cleanup *old_chain; | |
5519 | char *syscall_id; | |
5520 | ||
5521 | get_last_target_status (&ptid, &last); | |
5522 | ||
5523 | get_syscall_by_number (last.value.syscall_number, &s); | |
5524 | ||
5525 | annotate_catchpoint (b->number); | |
5526 | ||
5527 | if (s.name == NULL) | |
5528 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
5529 | else | |
5530 | syscall_id = xstrprintf ("'%s'", s.name); | |
5531 | ||
5532 | old_chain = make_cleanup (xfree, syscall_id); | |
5533 | ||
5534 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
5535 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
5536 | b->number, syscall_id); | |
5537 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
5538 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
5539 | b->number, syscall_id); | |
5540 | ||
5541 | do_cleanups (old_chain); | |
5542 | ||
5543 | return PRINT_SRC_AND_LOC; | |
5544 | } | |
5545 | ||
5546 | /* Implement the "print_one" breakpoint_ops method for syscall | |
5547 | catchpoints. */ | |
5548 | ||
5549 | static void | |
5550 | print_one_catch_syscall (struct breakpoint *b, | |
5551 | struct bp_location **last_loc) | |
5552 | { | |
5553 | struct value_print_options opts; | |
5554 | ||
5555 | get_user_print_options (&opts); | |
5556 | /* Field 4, the address, is omitted (which makes the columns | |
5557 | not line up too nicely with the headers, but the effect | |
5558 | is relatively readable). */ | |
5559 | if (opts.addressprint) | |
5560 | ui_out_field_skip (uiout, "addr"); | |
5561 | annotate_field (5); | |
5562 | ||
5563 | if (b->syscalls_to_be_caught | |
5564 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
5565 | ui_out_text (uiout, "syscalls \""); | |
5566 | else | |
5567 | ui_out_text (uiout, "syscall \""); | |
5568 | ||
5569 | if (b->syscalls_to_be_caught) | |
5570 | { | |
5571 | int i, iter; | |
5572 | char *text = xstrprintf ("%s", ""); | |
5573 | for (i = 0; | |
5574 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5575 | i++) | |
5576 | { | |
5577 | char *x = text; | |
5578 | struct syscall s; | |
5579 | get_syscall_by_number (iter, &s); | |
5580 | ||
5581 | if (s.name != NULL) | |
5582 | text = xstrprintf ("%s%s, ", text, s.name); | |
5583 | else | |
5584 | text = xstrprintf ("%s%d, ", text, iter); | |
5585 | ||
5586 | /* We have to xfree the last 'text' (now stored at 'x') | |
5587 | because xstrprintf dinamically allocates new space for it | |
5588 | on every call. */ | |
5589 | xfree (x); | |
5590 | } | |
5591 | /* Remove the last comma. */ | |
5592 | text[strlen (text) - 2] = '\0'; | |
5593 | ui_out_field_string (uiout, "what", text); | |
5594 | } | |
5595 | else | |
5596 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
5597 | ui_out_text (uiout, "\" "); | |
5598 | } | |
5599 | ||
5600 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
5601 | catchpoints. */ | |
5602 | ||
5603 | static void | |
5604 | print_mention_catch_syscall (struct breakpoint *b) | |
5605 | { | |
5606 | if (b->syscalls_to_be_caught) | |
5607 | { | |
5608 | int i, iter; | |
5609 | ||
5610 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
5611 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
5612 | else | |
5613 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
5614 | ||
5615 | for (i = 0; | |
5616 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5617 | i++) | |
5618 | { | |
5619 | struct syscall s; | |
5620 | get_syscall_by_number (iter, &s); | |
5621 | ||
5622 | if (s.name) | |
5623 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
5624 | else | |
5625 | printf_filtered (" %d", s.number); | |
5626 | } | |
5627 | printf_filtered (")"); | |
5628 | } | |
5629 | else | |
5630 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
5631 | b->number); | |
5632 | } | |
5633 | ||
5634 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ | |
5635 | ||
5636 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
5637 | { | |
5638 | insert_catch_syscall, | |
5639 | remove_catch_syscall, | |
5640 | breakpoint_hit_catch_syscall, | |
5641 | print_it_catch_syscall, | |
5642 | print_one_catch_syscall, | |
5643 | print_mention_catch_syscall | |
5644 | }; | |
5645 | ||
5646 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
5647 | ||
5648 | static int | |
5649 | syscall_catchpoint_p (struct breakpoint *b) | |
5650 | { | |
5651 | return (b->ops == &catch_syscall_breakpoint_ops); | |
5652 | } | |
5653 | ||
5654 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
5655 | but does NOT mention it nor update the global location list. | |
5656 | This is useful if you need to fill more fields in the | |
5657 | struct breakpoint before calling mention. | |
ce78b96d JB |
5658 | |
5659 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
5660 | If COND_STRING is not NULL, then store it in the breakpoint. | |
5661 | OPS, if not NULL, is the breakpoint_ops structure associated | |
5662 | to the catchpoint. */ | |
5663 | ||
5664 | static struct breakpoint * | |
a96d9b2e SDJ |
5665 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
5666 | char *cond_string, | |
5667 | struct breakpoint_ops *ops) | |
c906108c | 5668 | { |
c5aa993b JM |
5669 | struct symtab_and_line sal; |
5670 | struct breakpoint *b; | |
c5aa993b | 5671 | |
fe39c653 | 5672 | init_sal (&sal); |
6c95b8df | 5673 | sal.pspace = current_program_space; |
c5aa993b | 5674 | |
a6d9a66e | 5675 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
5676 | set_breakpoint_count (breakpoint_count + 1); |
5677 | b->number = breakpoint_count; | |
ce78b96d | 5678 | |
1b36a34b | 5679 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 5680 | b->thread = -1; |
c906108c | 5681 | b->addr_string = NULL; |
b5de0fa7 EZ |
5682 | b->enable_state = bp_enabled; |
5683 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 5684 | b->ops = ops; |
c5aa993b | 5685 | |
a96d9b2e SDJ |
5686 | return b; |
5687 | } | |
5688 | ||
5689 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
5690 | ||
5691 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
5692 | If COND_STRING is not NULL, then store it in the breakpoint. | |
5693 | OPS, if not NULL, is the breakpoint_ops structure associated | |
5694 | to the catchpoint. */ | |
5695 | ||
5696 | static struct breakpoint * | |
5697 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
5698 | char *cond_string, struct breakpoint_ops *ops) | |
5699 | { | |
5700 | struct breakpoint *b = | |
5701 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
5702 | ||
c906108c | 5703 | mention (b); |
ce78b96d | 5704 | update_global_location_list (1); |
c906108c | 5705 | |
ce78b96d | 5706 | return b; |
c906108c | 5707 | } |
c5aa993b | 5708 | |
9b70b993 | 5709 | static void |
a6d9a66e UW |
5710 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
5711 | int tempflag, char *cond_string, | |
ce78b96d | 5712 | struct breakpoint_ops *ops) |
c906108c | 5713 | { |
a6d9a66e UW |
5714 | struct breakpoint *b |
5715 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
5716 | |
5717 | /* FIXME: We should put this information in a breakpoint private data | |
5718 | area. */ | |
5719 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
5720 | } |
5721 | ||
fe798b75 JB |
5722 | /* Exec catchpoints. */ |
5723 | ||
9b70b993 | 5724 | static void |
fe798b75 | 5725 | insert_catch_exec (struct breakpoint *b) |
c906108c | 5726 | { |
fe798b75 JB |
5727 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
5728 | } | |
c906108c | 5729 | |
fe798b75 JB |
5730 | static int |
5731 | remove_catch_exec (struct breakpoint *b) | |
5732 | { | |
5733 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
5734 | } | |
c906108c | 5735 | |
fe798b75 JB |
5736 | static int |
5737 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
5738 | { | |
5739 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
5740 | } | |
c906108c | 5741 | |
fe798b75 JB |
5742 | static enum print_stop_action |
5743 | print_it_catch_exec (struct breakpoint *b) | |
5744 | { | |
5745 | annotate_catchpoint (b->number); | |
5746 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
5747 | b->exec_pathname); | |
5748 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
5749 | } |
5750 | ||
fe798b75 | 5751 | static void |
a6d9a66e | 5752 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
5753 | { |
5754 | struct value_print_options opts; | |
5755 | ||
5756 | get_user_print_options (&opts); | |
5757 | ||
5758 | /* Field 4, the address, is omitted (which makes the columns | |
5759 | not line up too nicely with the headers, but the effect | |
5760 | is relatively readable). */ | |
5761 | if (opts.addressprint) | |
5762 | ui_out_field_skip (uiout, "addr"); | |
5763 | annotate_field (5); | |
5764 | ui_out_text (uiout, "exec"); | |
5765 | if (b->exec_pathname != NULL) | |
5766 | { | |
5767 | ui_out_text (uiout, ", program \""); | |
5768 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
5769 | ui_out_text (uiout, "\" "); | |
5770 | } | |
5771 | } | |
5772 | ||
5773 | static void | |
5774 | print_mention_catch_exec (struct breakpoint *b) | |
5775 | { | |
5776 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
5777 | } | |
5778 | ||
5779 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
5780 | { | |
5781 | insert_catch_exec, | |
5782 | remove_catch_exec, | |
5783 | breakpoint_hit_catch_exec, | |
5784 | print_it_catch_exec, | |
5785 | print_one_catch_exec, | |
5786 | print_mention_catch_exec | |
5787 | }; | |
5788 | ||
a96d9b2e SDJ |
5789 | static void |
5790 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
5791 | struct breakpoint_ops *ops) | |
5792 | { | |
5793 | struct gdbarch *gdbarch = get_current_arch (); | |
5794 | struct breakpoint *b = | |
5795 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
5796 | ||
5797 | b->syscalls_to_be_caught = filter; | |
5798 | ||
5799 | /* Now, we have to mention the breakpoint and update the global | |
5800 | location list. */ | |
5801 | mention (b); | |
5802 | update_global_location_list (1); | |
5803 | } | |
5804 | ||
c906108c | 5805 | static int |
fba45db2 | 5806 | hw_breakpoint_used_count (void) |
c906108c | 5807 | { |
52f0bd74 | 5808 | struct breakpoint *b; |
c906108c SS |
5809 | int i = 0; |
5810 | ||
5811 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5812 | { |
d6b74ac4 | 5813 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
5814 | i++; |
5815 | } | |
c906108c SS |
5816 | |
5817 | return i; | |
5818 | } | |
5819 | ||
5820 | static int | |
fba45db2 | 5821 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 5822 | { |
52f0bd74 | 5823 | struct breakpoint *b; |
c906108c SS |
5824 | int i = 0; |
5825 | ||
5826 | *other_type_used = 0; | |
5827 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5828 | { |
468d015d | 5829 | if (breakpoint_enabled (b)) |
c5aa993b JM |
5830 | { |
5831 | if (b->type == type) | |
5832 | i++; | |
059fb39f PM |
5833 | else if ((b->type == bp_hardware_watchpoint |
5834 | || b->type == bp_read_watchpoint | |
5835 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
5836 | *other_type_used = 1; |
5837 | } | |
5838 | } | |
c906108c SS |
5839 | return i; |
5840 | } | |
5841 | ||
c906108c | 5842 | void |
fba45db2 | 5843 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 5844 | { |
c5aa993b | 5845 | struct breakpoint *b; |
c906108c SS |
5846 | |
5847 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5848 | { |
5849 | if (((b->type == bp_watchpoint) | |
5850 | || (b->type == bp_hardware_watchpoint) | |
5851 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5852 | || (b->type == bp_access_watchpoint)) |
468d015d | 5853 | && breakpoint_enabled (b)) |
c5aa993b | 5854 | { |
b5de0fa7 | 5855 | b->enable_state = bp_call_disabled; |
b60e7edf | 5856 | update_global_location_list (0); |
c5aa993b JM |
5857 | } |
5858 | } | |
c906108c SS |
5859 | } |
5860 | ||
5861 | void | |
fba45db2 | 5862 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 5863 | { |
c5aa993b | 5864 | struct breakpoint *b; |
c906108c SS |
5865 | |
5866 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5867 | { |
5868 | if (((b->type == bp_watchpoint) | |
5869 | || (b->type == bp_hardware_watchpoint) | |
5870 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5871 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5872 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5873 | { |
b5de0fa7 | 5874 | b->enable_state = bp_enabled; |
b60e7edf | 5875 | update_global_location_list (1); |
c5aa993b JM |
5876 | } |
5877 | } | |
c906108c SS |
5878 | } |
5879 | ||
8bea4e01 UW |
5880 | void |
5881 | disable_breakpoints_before_startup (void) | |
5882 | { | |
5883 | struct breakpoint *b; | |
5884 | int found = 0; | |
5885 | ||
5886 | ALL_BREAKPOINTS (b) | |
5887 | { | |
6c95b8df PA |
5888 | if (b->pspace != current_program_space) |
5889 | continue; | |
5890 | ||
8bea4e01 UW |
5891 | if ((b->type == bp_breakpoint |
5892 | || b->type == bp_hardware_breakpoint) | |
5893 | && breakpoint_enabled (b)) | |
5894 | { | |
5895 | b->enable_state = bp_startup_disabled; | |
5896 | found = 1; | |
5897 | } | |
5898 | } | |
5899 | ||
5900 | if (found) | |
5901 | update_global_location_list (0); | |
5902 | ||
6c95b8df | 5903 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
5904 | } |
5905 | ||
5906 | void | |
5907 | enable_breakpoints_after_startup (void) | |
5908 | { | |
5909 | struct breakpoint *b; | |
5910 | int found = 0; | |
5911 | ||
6c95b8df | 5912 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
5913 | |
5914 | ALL_BREAKPOINTS (b) | |
5915 | { | |
6c95b8df PA |
5916 | if (b->pspace != current_program_space) |
5917 | continue; | |
5918 | ||
8bea4e01 UW |
5919 | if ((b->type == bp_breakpoint |
5920 | || b->type == bp_hardware_breakpoint) | |
5921 | && b->enable_state == bp_startup_disabled) | |
5922 | { | |
5923 | b->enable_state = bp_enabled; | |
5924 | found = 1; | |
5925 | } | |
5926 | } | |
5927 | ||
5928 | if (found) | |
5929 | breakpoint_re_set (); | |
5930 | } | |
5931 | ||
c906108c SS |
5932 | |
5933 | /* Set a breakpoint that will evaporate an end of command | |
5934 | at address specified by SAL. | |
5935 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
5936 | ||
5937 | struct breakpoint * | |
a6d9a66e UW |
5938 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
5939 | struct frame_id frame_id, enum bptype type) | |
c906108c | 5940 | { |
52f0bd74 | 5941 | struct breakpoint *b; |
edb3359d DJ |
5942 | |
5943 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
5944 | one. */ | |
5945 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
5946 | ||
a6d9a66e | 5947 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
5948 | b->enable_state = bp_enabled; |
5949 | b->disposition = disp_donttouch; | |
818dd999 | 5950 | b->frame_id = frame_id; |
c906108c SS |
5951 | |
5952 | /* If we're debugging a multi-threaded program, then we | |
5953 | want momentary breakpoints to be active in only a | |
5954 | single thread of control. */ | |
39f77062 KB |
5955 | if (in_thread_list (inferior_ptid)) |
5956 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5957 | |
b60e7edf | 5958 | update_global_location_list_nothrow (1); |
74960c60 | 5959 | |
c906108c SS |
5960 | return b; |
5961 | } | |
611c83ae | 5962 | |
e58b0e63 PA |
5963 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5964 | ORIG is NULL. */ | |
5965 | ||
5966 | struct breakpoint * | |
5967 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5968 | { | |
5969 | struct breakpoint *copy; | |
5970 | ||
5971 | /* If there's nothing to clone, then return nothing. */ | |
5972 | if (orig == NULL) | |
5973 | return NULL; | |
5974 | ||
a6d9a66e | 5975 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
5976 | copy->loc = allocate_bp_location (copy); |
5977 | set_breakpoint_location_function (copy->loc); | |
5978 | ||
a6d9a66e | 5979 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
5980 | copy->loc->requested_address = orig->loc->requested_address; |
5981 | copy->loc->address = orig->loc->address; | |
5982 | copy->loc->section = orig->loc->section; | |
6c95b8df | 5983 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
5984 | |
5985 | if (orig->source_file == NULL) | |
5986 | copy->source_file = NULL; | |
5987 | else | |
5988 | copy->source_file = xstrdup (orig->source_file); | |
5989 | ||
5990 | copy->line_number = orig->line_number; | |
5991 | copy->frame_id = orig->frame_id; | |
5992 | copy->thread = orig->thread; | |
6c95b8df | 5993 | copy->pspace = orig->pspace; |
e58b0e63 PA |
5994 | |
5995 | copy->enable_state = bp_enabled; | |
5996 | copy->disposition = disp_donttouch; | |
5997 | copy->number = internal_breakpoint_number--; | |
5998 | ||
5999 | update_global_location_list_nothrow (0); | |
6000 | return copy; | |
6001 | } | |
6002 | ||
611c83ae | 6003 | struct breakpoint * |
a6d9a66e UW |
6004 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6005 | enum bptype type) | |
611c83ae PA |
6006 | { |
6007 | struct symtab_and_line sal; | |
6008 | ||
6009 | sal = find_pc_line (pc, 0); | |
6010 | sal.pc = pc; | |
6011 | sal.section = find_pc_overlay (pc); | |
6012 | sal.explicit_pc = 1; | |
6013 | ||
a6d9a66e | 6014 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6015 | } |
c906108c | 6016 | \f |
c5aa993b | 6017 | |
c906108c SS |
6018 | /* Tell the user we have just set a breakpoint B. */ |
6019 | ||
6020 | static void | |
fba45db2 | 6021 | mention (struct breakpoint *b) |
c906108c SS |
6022 | { |
6023 | int say_where = 0; | |
fa8a61dc | 6024 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6025 | struct value_print_options opts; |
6026 | ||
6027 | get_user_print_options (&opts); | |
8b93c638 | 6028 | |
9a4105ab AC |
6029 | /* FIXME: This is misplaced; mention() is called by things (like |
6030 | hitting a watchpoint) other than breakpoint creation. It should | |
6031 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6032 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6033 | observer_notify_breakpoint_created (b->number); |
c906108c | 6034 | |
3086aeae DJ |
6035 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6036 | b->ops->print_mention (b); | |
6037 | else | |
6038 | switch (b->type) | |
6039 | { | |
6040 | case bp_none: | |
a3f17187 | 6041 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6042 | break; |
6043 | case bp_watchpoint: | |
6044 | ui_out_text (uiout, "Watchpoint "); | |
6045 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6046 | ui_out_field_int (uiout, "number", b->number); | |
6047 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6048 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6049 | do_cleanups (ui_out_chain); |
6050 | break; | |
6051 | case bp_hardware_watchpoint: | |
6052 | ui_out_text (uiout, "Hardware watchpoint "); | |
6053 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6054 | ui_out_field_int (uiout, "number", b->number); | |
6055 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6056 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6057 | do_cleanups (ui_out_chain); |
6058 | break; | |
6059 | case bp_read_watchpoint: | |
6060 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6061 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6062 | ui_out_field_int (uiout, "number", b->number); | |
6063 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6064 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6065 | do_cleanups (ui_out_chain); |
6066 | break; | |
6067 | case bp_access_watchpoint: | |
6068 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6069 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6070 | ui_out_field_int (uiout, "number", b->number); | |
6071 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6072 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6073 | do_cleanups (ui_out_chain); |
6074 | break; | |
6075 | case bp_breakpoint: | |
6076 | if (ui_out_is_mi_like_p (uiout)) | |
6077 | { | |
6078 | say_where = 0; | |
6079 | break; | |
6080 | } | |
2cec12e5 AR |
6081 | if (b->disposition == disp_del) |
6082 | printf_filtered (_("Temporary breakpoint")); | |
6083 | else | |
6084 | printf_filtered (_("Breakpoint")); | |
6085 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6086 | say_where = 1; |
6087 | break; | |
6088 | case bp_hardware_breakpoint: | |
6089 | if (ui_out_is_mi_like_p (uiout)) | |
6090 | { | |
6091 | say_where = 0; | |
6092 | break; | |
6093 | } | |
a3f17187 | 6094 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6095 | say_where = 1; |
6096 | break; | |
1042e4c0 SS |
6097 | case bp_tracepoint: |
6098 | if (ui_out_is_mi_like_p (uiout)) | |
6099 | { | |
6100 | say_where = 0; | |
6101 | break; | |
6102 | } | |
6103 | printf_filtered (_("Tracepoint")); | |
6104 | printf_filtered (_(" %d"), b->number); | |
6105 | say_where = 1; | |
6106 | break; | |
7a697b8d SS |
6107 | case bp_fast_tracepoint: |
6108 | if (ui_out_is_mi_like_p (uiout)) | |
6109 | { | |
6110 | say_where = 0; | |
6111 | break; | |
6112 | } | |
6113 | printf_filtered (_("Fast tracepoint")); | |
6114 | printf_filtered (_(" %d"), b->number); | |
6115 | say_where = 1; | |
6116 | break; | |
3086aeae DJ |
6117 | |
6118 | case bp_until: | |
6119 | case bp_finish: | |
6120 | case bp_longjmp: | |
6121 | case bp_longjmp_resume: | |
6122 | case bp_step_resume: | |
3086aeae DJ |
6123 | case bp_call_dummy: |
6124 | case bp_watchpoint_scope: | |
6125 | case bp_shlib_event: | |
6126 | case bp_thread_event: | |
6127 | case bp_overlay_event: | |
4efc6507 | 6128 | case bp_jit_event: |
0fd8e87f | 6129 | case bp_longjmp_master: |
3086aeae DJ |
6130 | break; |
6131 | } | |
c906108c | 6132 | |
c906108c SS |
6133 | if (say_where) |
6134 | { | |
a3f17187 AC |
6135 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6136 | single string. */ | |
0d381245 | 6137 | if (b->loc == NULL) |
c906108c | 6138 | { |
a3f17187 | 6139 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6140 | } |
6141 | else | |
6142 | { | |
79a45b7d | 6143 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6144 | { |
6145 | printf_filtered (" at "); | |
5af949e3 UW |
6146 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6147 | gdb_stdout); | |
0101ce28 JJ |
6148 | } |
6149 | if (b->source_file) | |
6150 | printf_filtered (": file %s, line %d.", | |
6151 | b->source_file, b->line_number); | |
0d381245 VP |
6152 | |
6153 | if (b->loc->next) | |
6154 | { | |
6155 | struct bp_location *loc = b->loc; | |
6156 | int n = 0; | |
6157 | for (; loc; loc = loc->next) | |
6158 | ++n; | |
6159 | printf_filtered (" (%d locations)", n); | |
6160 | } | |
6161 | ||
c906108c | 6162 | } |
c906108c | 6163 | } |
9dc5e2a9 | 6164 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6165 | return; |
c906108c SS |
6166 | printf_filtered ("\n"); |
6167 | } | |
c906108c | 6168 | \f |
c5aa993b | 6169 | |
0d381245 | 6170 | static struct bp_location * |
39d61571 | 6171 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6172 | const struct symtab_and_line *sal) |
6173 | { | |
6174 | struct bp_location *loc, **tmp; | |
6175 | ||
39d61571 | 6176 | loc = allocate_bp_location (b); |
0d381245 VP |
6177 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6178 | ; | |
6179 | *tmp = loc; | |
a6d9a66e UW |
6180 | loc->gdbarch = get_sal_arch (*sal); |
6181 | if (!loc->gdbarch) | |
6182 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6183 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6184 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6185 | loc->requested_address, b->type); | |
6c95b8df PA |
6186 | loc->pspace = sal->pspace; |
6187 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6188 | loc->section = sal->section; |
6189 | ||
6190 | set_breakpoint_location_function (loc); | |
6191 | return loc; | |
6192 | } | |
514f746b AR |
6193 | \f |
6194 | ||
6195 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6196 | return 0 otherwise. */ | |
6197 | ||
6198 | static int | |
6199 | bp_loc_is_permanent (struct bp_location *loc) | |
6200 | { | |
6201 | int len; | |
6202 | CORE_ADDR addr; | |
6203 | const gdb_byte *brk; | |
6204 | gdb_byte *target_mem; | |
939c61fa JK |
6205 | struct cleanup *cleanup; |
6206 | int retval = 0; | |
514f746b AR |
6207 | |
6208 | gdb_assert (loc != NULL); | |
6209 | ||
6210 | addr = loc->address; | |
a6d9a66e | 6211 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6212 | |
939c61fa JK |
6213 | /* Software breakpoints unsupported? */ |
6214 | if (brk == NULL) | |
6215 | return 0; | |
6216 | ||
514f746b AR |
6217 | target_mem = alloca (len); |
6218 | ||
939c61fa JK |
6219 | /* Enable the automatic memory restoration from breakpoints while |
6220 | we read the memory. Otherwise we could say about our temporary | |
6221 | breakpoints they are permanent. */ | |
6c95b8df PA |
6222 | cleanup = save_current_space_and_thread (); |
6223 | ||
6224 | switch_to_program_space_and_thread (loc->pspace); | |
6225 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6226 | |
514f746b AR |
6227 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6228 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6229 | retval = 1; |
514f746b | 6230 | |
939c61fa JK |
6231 | do_cleanups (cleanup); |
6232 | ||
6233 | return retval; | |
514f746b AR |
6234 | } |
6235 | ||
6236 | ||
c3f6f71d | 6237 | |
018d34a4 VP |
6238 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6239 | as textual description of the location, and COND_STRING | |
db107f19 | 6240 | as condition expression. */ |
018d34a4 VP |
6241 | |
6242 | static void | |
a6d9a66e UW |
6243 | create_breakpoint (struct gdbarch *gdbarch, |
6244 | struct symtabs_and_lines sals, char *addr_string, | |
018d34a4 VP |
6245 | char *cond_string, |
6246 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 6247 | int thread, int task, int ignore_count, |
41447f92 | 6248 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 6249 | { |
0d381245 VP |
6250 | struct breakpoint *b = NULL; |
6251 | int i; | |
018d34a4 VP |
6252 | |
6253 | if (type == bp_hardware_breakpoint) | |
6254 | { | |
6255 | int i = hw_breakpoint_used_count (); | |
6256 | int target_resources_ok = | |
d92524f1 | 6257 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6258 | i + 1, 0); |
6259 | if (target_resources_ok == 0) | |
6260 | error (_("No hardware breakpoint support in the target.")); | |
6261 | else if (target_resources_ok < 0) | |
6262 | error (_("Hardware breakpoints used exceeds limit.")); | |
6263 | } | |
6264 | ||
6c95b8df PA |
6265 | gdb_assert (sals.nelts > 0); |
6266 | ||
0d381245 VP |
6267 | for (i = 0; i < sals.nelts; ++i) |
6268 | { | |
6269 | struct symtab_and_line sal = sals.sals[i]; | |
6270 | struct bp_location *loc; | |
6271 | ||
6272 | if (from_tty) | |
5af949e3 UW |
6273 | { |
6274 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6275 | if (!loc_gdbarch) | |
6276 | loc_gdbarch = gdbarch; | |
6277 | ||
6278 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6279 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6280 | } |
0d381245 VP |
6281 | |
6282 | if (i == 0) | |
6283 | { | |
a6d9a66e | 6284 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6285 | set_breakpoint_count (breakpoint_count + 1); |
6286 | b->number = breakpoint_count; | |
6287 | b->thread = thread; | |
4a306c9a | 6288 | b->task = task; |
018d34a4 | 6289 | |
0d381245 VP |
6290 | b->cond_string = cond_string; |
6291 | b->ignore_count = ignore_count; | |
41447f92 | 6292 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6293 | b->disposition = disposition; |
018d34a4 | 6294 | |
6c95b8df PA |
6295 | b->pspace = sals.sals[0].pspace; |
6296 | ||
6297 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6298 | && (b->type == bp_breakpoint |
6299 | || b->type == bp_hardware_breakpoint)) | |
6300 | b->enable_state = bp_startup_disabled; | |
6301 | ||
0d381245 VP |
6302 | loc = b->loc; |
6303 | } | |
6304 | else | |
018d34a4 | 6305 | { |
39d61571 | 6306 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6307 | } |
6308 | ||
514f746b AR |
6309 | if (bp_loc_is_permanent (loc)) |
6310 | make_breakpoint_permanent (b); | |
6311 | ||
0d381245 VP |
6312 | if (b->cond_string) |
6313 | { | |
6314 | char *arg = b->cond_string; | |
d32a6982 | 6315 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6316 | if (*arg) |
db107f19 | 6317 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6318 | } |
0d381245 | 6319 | } |
018d34a4 VP |
6320 | |
6321 | if (addr_string) | |
6322 | b->addr_string = addr_string; | |
6323 | else | |
6324 | /* addr_string has to be used or breakpoint_re_set will delete | |
6325 | me. */ | |
5af949e3 UW |
6326 | b->addr_string |
6327 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 6328 | |
604133b5 | 6329 | b->ops = ops; |
018d34a4 VP |
6330 | mention (b); |
6331 | } | |
6332 | ||
ed0616c6 VP |
6333 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
6334 | elements to fill the void space. */ | |
2c0b251b PA |
6335 | static void |
6336 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
6337 | { |
6338 | int i = index_to_remove+1; | |
6339 | int last_index = sal->nelts-1; | |
6340 | ||
6341 | for (;i <= last_index; ++i) | |
6342 | sal->sals[i-1] = sal->sals[i]; | |
6343 | ||
6344 | --(sal->nelts); | |
6345 | } | |
6346 | ||
6c95b8df PA |
6347 | /* If appropriate, obtains all sals that correspond to the same file |
6348 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
6349 | will want to set a breakpoint at foo.c:line, and not really care | |
6350 | about program spaces. This is done only if SAL does not have | |
6351 | explicit PC and has line and file information. If we got just a | |
6352 | single expanded sal, return the original. | |
ed0616c6 | 6353 | |
6c95b8df PA |
6354 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
6355 | which the name of enclosing function is different from SAL. This | |
6356 | makes sure that if we have breakpoint originally set in template | |
6357 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
6358 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 6359 | |
2c0b251b | 6360 | static struct symtabs_and_lines |
ed0616c6 VP |
6361 | expand_line_sal_maybe (struct symtab_and_line sal) |
6362 | { | |
6363 | struct symtabs_and_lines expanded; | |
6364 | CORE_ADDR original_pc = sal.pc; | |
6365 | char *original_function = NULL; | |
6366 | int found; | |
6367 | int i; | |
6c95b8df | 6368 | struct cleanup *old_chain; |
ed0616c6 VP |
6369 | |
6370 | /* If we have explicit pc, don't expand. | |
6371 | If we have no line number, we can't expand. */ | |
6372 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
6373 | { | |
6374 | expanded.nelts = 1; | |
6375 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6376 | expanded.sals[0] = sal; | |
6377 | return expanded; | |
6378 | } | |
6379 | ||
6380 | sal.pc = 0; | |
6c95b8df PA |
6381 | |
6382 | old_chain = save_current_space_and_thread (); | |
6383 | ||
6384 | switch_to_program_space_and_thread (sal.pspace); | |
6385 | ||
ed0616c6 | 6386 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
6387 | |
6388 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 6389 | expanded = expand_line_sal (sal); |
6c95b8df | 6390 | |
ed0616c6 VP |
6391 | if (expanded.nelts == 1) |
6392 | { | |
3dba1c98 JB |
6393 | /* We had one sal, we got one sal. Return that sal, adjusting it |
6394 | past the function prologue if necessary. */ | |
ed0616c6 VP |
6395 | xfree (expanded.sals); |
6396 | expanded.nelts = 1; | |
6397 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6398 | sal.pc = original_pc; | |
6399 | expanded.sals[0] = sal; | |
3dba1c98 | 6400 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 6401 | do_cleanups (old_chain); |
ed0616c6 VP |
6402 | return expanded; |
6403 | } | |
6404 | ||
6405 | if (!sal.explicit_line) | |
6406 | { | |
6407 | CORE_ADDR func_addr, func_end; | |
6408 | for (i = 0; i < expanded.nelts; ++i) | |
6409 | { | |
6410 | CORE_ADDR pc = expanded.sals[i].pc; | |
6411 | char *this_function; | |
6c95b8df PA |
6412 | |
6413 | /* We need to switch threads as well since we're about to | |
6414 | read memory. */ | |
6415 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
6416 | ||
ed0616c6 VP |
6417 | if (find_pc_partial_function (pc, &this_function, |
6418 | &func_addr, &func_end)) | |
6419 | { | |
059fb39f PM |
6420 | if (this_function |
6421 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
6422 | { |
6423 | remove_sal (&expanded, i); | |
6424 | --i; | |
6425 | } | |
6426 | else if (func_addr == pc) | |
6427 | { | |
6428 | /* We're at beginning of a function, and should | |
6429 | skip prologue. */ | |
6430 | struct symbol *sym = find_pc_function (pc); | |
6431 | if (sym) | |
6432 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
6433 | else | |
d80b854b UW |
6434 | { |
6435 | /* Since find_pc_partial_function returned true, | |
6436 | we should really always find the section here. */ | |
6437 | struct obj_section *section = find_pc_section (pc); | |
6438 | if (section) | |
6439 | { | |
6440 | struct gdbarch *gdbarch | |
6441 | = get_objfile_arch (section->objfile); | |
6442 | expanded.sals[i].pc | |
6443 | = gdbarch_skip_prologue (gdbarch, pc); | |
6444 | } | |
6445 | } | |
ed0616c6 VP |
6446 | } |
6447 | } | |
6448 | } | |
6449 | } | |
3daf8fe5 JG |
6450 | else |
6451 | { | |
6452 | for (i = 0; i < expanded.nelts; ++i) | |
6453 | { | |
6454 | /* If this SAL corresponds to a breakpoint inserted using a | |
6455 | line number, then skip the function prologue if necessary. */ | |
6456 | skip_prologue_sal (&expanded.sals[i]); | |
6457 | } | |
6458 | } | |
ed0616c6 | 6459 | |
6c95b8df PA |
6460 | do_cleanups (old_chain); |
6461 | ||
ed0616c6 VP |
6462 | if (expanded.nelts <= 1) |
6463 | { | |
6464 | /* This is un ugly workaround. If we get zero | |
6465 | expanded sals then something is really wrong. | |
6466 | Fix that by returnign the original sal. */ | |
6467 | xfree (expanded.sals); | |
6468 | expanded.nelts = 1; | |
6469 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6470 | sal.pc = original_pc; | |
6471 | expanded.sals[0] = sal; | |
6472 | return expanded; | |
6473 | } | |
6474 | ||
6475 | if (original_pc) | |
6476 | { | |
6477 | found = 0; | |
6478 | for (i = 0; i < expanded.nelts; ++i) | |
6479 | if (expanded.sals[i].pc == original_pc) | |
6480 | { | |
6481 | found = 1; | |
6482 | break; | |
6483 | } | |
6484 | gdb_assert (found); | |
6485 | } | |
6486 | ||
6487 | return expanded; | |
6488 | } | |
6489 | ||
018d34a4 VP |
6490 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
6491 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
6492 | value. COND_STRING, if not NULL, specified the condition to be | |
6493 | used for all breakpoints. Essentially the only case where | |
6494 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
6495 | function. In that case, it's still not possible to specify | |
6496 | separate conditions for different overloaded functions, so | |
6497 | we take just a single condition string. | |
6498 | ||
c3f6f71d | 6499 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 6500 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
6501 | array contents). If the function fails (error() is called), the |
6502 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
6503 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
6504 | |
6505 | static void | |
a6d9a66e UW |
6506 | create_breakpoints (struct gdbarch *gdbarch, |
6507 | struct symtabs_and_lines sals, char **addr_string, | |
018d34a4 | 6508 | char *cond_string, |
c3f6f71d | 6509 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 6510 | int thread, int task, int ignore_count, |
41447f92 VP |
6511 | struct breakpoint_ops *ops, int from_tty, |
6512 | int enabled) | |
c906108c | 6513 | { |
018d34a4 VP |
6514 | int i; |
6515 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 6516 | { |
ed0616c6 VP |
6517 | struct symtabs_and_lines expanded = |
6518 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 6519 | |
a6d9a66e | 6520 | create_breakpoint (gdbarch, expanded, addr_string[i], |
018d34a4 | 6521 | cond_string, type, disposition, |
4a306c9a | 6522 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 6523 | } |
c3f6f71d | 6524 | } |
c906108c | 6525 | |
c3f6f71d JM |
6526 | /* Parse ARG which is assumed to be a SAL specification possibly |
6527 | followed by conditionals. On return, SALS contains an array of SAL | |
6528 | addresses found. ADDR_STRING contains a vector of (canonical) | |
6529 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 6530 | |
b9362cc7 | 6531 | static void |
c3f6f71d JM |
6532 | parse_breakpoint_sals (char **address, |
6533 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
6534 | char ***addr_string, |
6535 | int *not_found_ptr) | |
c3f6f71d JM |
6536 | { |
6537 | char *addr_start = *address; | |
6538 | *addr_string = NULL; | |
6539 | /* If no arg given, or if first arg is 'if ', use the default | |
6540 | breakpoint. */ | |
6541 | if ((*address) == NULL | |
6542 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
6543 | { |
6544 | if (default_breakpoint_valid) | |
6545 | { | |
c3f6f71d | 6546 | struct symtab_and_line sal; |
fe39c653 | 6547 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 6548 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
6549 | xmalloc (sizeof (struct symtab_and_line)); |
6550 | sal.pc = default_breakpoint_address; | |
6551 | sal.line = default_breakpoint_line; | |
6552 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 6553 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 6554 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
6555 | |
6556 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
6557 | the default_breakpoint_address. So make sure to set | |
6558 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
6559 | sals to include all other instances with the same symtab and line. | |
6560 | */ | |
6561 | sal.explicit_pc = 1; | |
6562 | ||
c3f6f71d JM |
6563 | sals->sals[0] = sal; |
6564 | sals->nelts = 1; | |
c906108c SS |
6565 | } |
6566 | else | |
8a3fe4f8 | 6567 | error (_("No default breakpoint address now.")); |
c906108c SS |
6568 | } |
6569 | else | |
6570 | { | |
c906108c | 6571 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
6572 | current_source_symtab (which is decode_line_1's default). This |
6573 | should produce the results we want almost all of the time while | |
1aeae86e AF |
6574 | leaving default_breakpoint_* alone. |
6575 | ObjC: However, don't match an Objective-C method name which | |
6576 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 6577 | |
c214a6fd | 6578 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 6579 | |
c906108c | 6580 | if (default_breakpoint_valid |
0378c332 | 6581 | && (!cursal.symtab |
1aeae86e AF |
6582 | || ((strchr ("+-", (*address)[0]) != NULL) |
6583 | && ((*address)[1] != '[')))) | |
c3f6f71d | 6584 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
6585 | default_breakpoint_line, addr_string, |
6586 | not_found_ptr); | |
c906108c | 6587 | else |
0101ce28 JJ |
6588 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
6589 | addr_string, not_found_ptr); | |
c906108c | 6590 | } |
c3f6f71d JM |
6591 | /* For any SAL that didn't have a canonical string, fill one in. */ |
6592 | if (sals->nelts > 0 && *addr_string == NULL) | |
6593 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
6594 | if (addr_start != (*address)) | |
c906108c | 6595 | { |
c3f6f71d JM |
6596 | int i; |
6597 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 6598 | { |
c3f6f71d JM |
6599 | /* Add the string if not present. */ |
6600 | if ((*addr_string)[i] == NULL) | |
6601 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
6602 | } |
6603 | } | |
c3f6f71d | 6604 | } |
c906108c | 6605 | |
c906108c | 6606 | |
c3f6f71d JM |
6607 | /* Convert each SAL into a real PC. Verify that the PC can be |
6608 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 6609 | |
b9362cc7 | 6610 | static void |
c3f6f71d JM |
6611 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
6612 | char *address) | |
6613 | { | |
6614 | int i; | |
6615 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 6616 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
6617 | } |
6618 | ||
7a697b8d SS |
6619 | /* Fast tracepoints may have restrictions on valid locations. For |
6620 | instance, a fast tracepoint using a jump instead of a trap will | |
6621 | likely have to overwrite more bytes than a trap would, and so can | |
6622 | only be placed where the instruction is longer than the jump, or a | |
6623 | multi-instruction sequence does not have a jump into the middle of | |
6624 | it, etc. */ | |
6625 | ||
6626 | static void | |
6627 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6628 | struct symtabs_and_lines *sals) | |
6629 | { | |
6630 | int i, rslt; | |
6631 | struct symtab_and_line *sal; | |
6632 | char *msg; | |
6633 | struct cleanup *old_chain; | |
6634 | ||
6635 | for (i = 0; i < sals->nelts; i++) | |
6636 | { | |
6637 | sal = &sals->sals[i]; | |
6638 | ||
6639 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
6640 | NULL, &msg); | |
6641 | old_chain = make_cleanup (xfree, msg); | |
6642 | ||
6643 | if (!rslt) | |
6644 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
6645 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
6646 | ||
6647 | do_cleanups (old_chain); | |
6648 | } | |
6649 | } | |
6650 | ||
05ff989b | 6651 | static void |
0101ce28 JJ |
6652 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
6653 | { | |
6654 | struct captured_parse_breakpoint_args *args = data; | |
6655 | ||
6656 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
6657 | args->not_found_ptr); | |
0101ce28 JJ |
6658 | } |
6659 | ||
018d34a4 VP |
6660 | /* Given TOK, a string specification of condition and thread, as |
6661 | accepted by the 'break' command, extract the condition | |
6662 | string and thread number and set *COND_STRING and *THREAD. | |
6663 | PC identifies the context at which the condition should be parsed. | |
6664 | If no condition is found, *COND_STRING is set to NULL. | |
6665 | If no thread is found, *THREAD is set to -1. */ | |
6666 | static void | |
6667 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 6668 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
6669 | { |
6670 | *cond_string = NULL; | |
6671 | *thread = -1; | |
6672 | while (tok && *tok) | |
6673 | { | |
6674 | char *end_tok; | |
6675 | int toklen; | |
6676 | char *cond_start = NULL; | |
6677 | char *cond_end = NULL; | |
6678 | while (*tok == ' ' || *tok == '\t') | |
6679 | tok++; | |
6680 | ||
6681 | end_tok = tok; | |
6682 | ||
6683 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6684 | end_tok++; | |
6685 | ||
6686 | toklen = end_tok - tok; | |
6687 | ||
6688 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6689 | { | |
f7545552 TT |
6690 | struct expression *expr; |
6691 | ||
018d34a4 | 6692 | tok = cond_start = end_tok + 1; |
f7545552 TT |
6693 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
6694 | xfree (expr); | |
018d34a4 VP |
6695 | cond_end = tok; |
6696 | *cond_string = savestring (cond_start, | |
6697 | cond_end - cond_start); | |
6698 | } | |
6699 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6700 | { | |
6701 | char *tmptok; | |
6702 | ||
6703 | tok = end_tok + 1; | |
6704 | tmptok = tok; | |
6705 | *thread = strtol (tok, &tok, 0); | |
6706 | if (tok == tmptok) | |
6707 | error (_("Junk after thread keyword.")); | |
6708 | if (!valid_thread_id (*thread)) | |
6709 | error (_("Unknown thread %d."), *thread); | |
6710 | } | |
4a306c9a JB |
6711 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
6712 | { | |
6713 | char *tmptok; | |
6714 | ||
6715 | tok = end_tok + 1; | |
6716 | tmptok = tok; | |
6717 | *task = strtol (tok, &tok, 0); | |
6718 | if (tok == tmptok) | |
6719 | error (_("Junk after task keyword.")); | |
6720 | if (!valid_task_id (*task)) | |
b6199126 | 6721 | error (_("Unknown task %d."), *task); |
4a306c9a | 6722 | } |
018d34a4 VP |
6723 | else |
6724 | error (_("Junk at end of arguments.")); | |
6725 | } | |
6726 | } | |
6727 | ||
72b2ff0e VP |
6728 | /* Set a breakpoint. This function is shared between |
6729 | CLI and MI functions for setting a breakpoint. | |
6730 | This function has two major modes of operations, | |
6731 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
6732 | If non-zero, the function will parse arg, extracting | |
6733 | breakpoint location, address and thread. Otherwise, | |
6734 | ARG is just the location of breakpoint, with condition | |
6735 | and thread specified by the COND_STRING and THREAD | |
6736 | parameters. */ | |
0101ce28 | 6737 | |
98deb0da | 6738 | static void |
a6d9a66e UW |
6739 | break_command_really (struct gdbarch *gdbarch, |
6740 | char *arg, char *cond_string, int thread, | |
60c46647 | 6741 | int parse_condition_and_thread, |
1042e4c0 | 6742 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
6743 | int ignore_count, |
6744 | enum auto_boolean pending_break_support, | |
604133b5 | 6745 | struct breakpoint_ops *ops, |
41447f92 VP |
6746 | int from_tty, |
6747 | int enabled) | |
c3f6f71d | 6748 | { |
71fff37b | 6749 | struct gdb_exception e; |
c3f6f71d | 6750 | struct symtabs_and_lines sals; |
0101ce28 | 6751 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
6752 | char *copy_arg; |
6753 | char *err_msg; | |
c3f6f71d JM |
6754 | char *addr_start = arg; |
6755 | char **addr_string; | |
6756 | struct cleanup *old_chain; | |
80c99de1 | 6757 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 6758 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 6759 | int i; |
0101ce28 | 6760 | int pending = 0; |
0101ce28 | 6761 | int not_found = 0; |
1042e4c0 | 6762 | enum bptype type_wanted; |
4a306c9a | 6763 | int task = 0; |
c3f6f71d | 6764 | |
c3f6f71d JM |
6765 | sals.sals = NULL; |
6766 | sals.nelts = 0; | |
6767 | addr_string = NULL; | |
c3f6f71d | 6768 | |
0101ce28 JJ |
6769 | parse_args.arg_p = &arg; |
6770 | parse_args.sals_p = &sals; | |
6771 | parse_args.addr_string_p = &addr_string; | |
6772 | parse_args.not_found_ptr = ¬_found; | |
6773 | ||
05ff989b AC |
6774 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
6775 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
6776 | |
6777 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 6778 | switch (e.reason) |
0101ce28 | 6779 | { |
05ff989b | 6780 | case RETURN_QUIT: |
98deb0da | 6781 | throw_exception (e); |
05ff989b AC |
6782 | case RETURN_ERROR: |
6783 | switch (e.error) | |
0101ce28 | 6784 | { |
05ff989b | 6785 | case NOT_FOUND_ERROR: |
0101ce28 | 6786 | |
05ff989b AC |
6787 | /* If pending breakpoint support is turned off, throw |
6788 | error. */ | |
fa8d40ab JJ |
6789 | |
6790 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
6791 | throw_exception (e); |
6792 | ||
6793 | exception_print (gdb_stderr, e); | |
fa8d40ab | 6794 | |
05ff989b AC |
6795 | /* If pending breakpoint support is auto query and the user |
6796 | selects no, then simply return the error code. */ | |
059fb39f PM |
6797 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
6798 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 6799 | return; |
fa8d40ab | 6800 | |
05ff989b AC |
6801 | /* At this point, either the user was queried about setting |
6802 | a pending breakpoint and selected yes, or pending | |
6803 | breakpoint behavior is on and thus a pending breakpoint | |
6804 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
6805 | copy_arg = xstrdup (addr_start); |
6806 | addr_string = ©_arg; | |
6807 | sals.nelts = 1; | |
6808 | sals.sals = &pending_sal; | |
6809 | pending_sal.pc = 0; | |
6810 | pending = 1; | |
05ff989b AC |
6811 | break; |
6812 | default: | |
98deb0da | 6813 | throw_exception (e); |
0101ce28 | 6814 | } |
05ff989b AC |
6815 | default: |
6816 | if (!sals.nelts) | |
98deb0da | 6817 | return; |
0101ce28 | 6818 | } |
c3f6f71d JM |
6819 | |
6820 | /* Create a chain of things that always need to be cleaned up. */ | |
6821 | old_chain = make_cleanup (null_cleanup, 0); | |
6822 | ||
0101ce28 JJ |
6823 | if (!pending) |
6824 | { | |
6825 | /* Make sure that all storage allocated to SALS gets freed. */ | |
6826 | make_cleanup (xfree, sals.sals); | |
6827 | ||
6828 | /* Cleanup the addr_string array but not its contents. */ | |
6829 | make_cleanup (xfree, addr_string); | |
6830 | } | |
c3f6f71d | 6831 | |
c3f6f71d JM |
6832 | /* ----------------------------- SNIP ----------------------------- |
6833 | Anything added to the cleanup chain beyond this point is assumed | |
6834 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
6835 | then the memory is not reclaimed. */ |
6836 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
6837 | |
6838 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 6839 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
6840 | for (i = 0; i < sals.nelts; i++) |
6841 | { | |
6842 | if (addr_string[i] != NULL) | |
b8c9b27d | 6843 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
6844 | } |
6845 | ||
6846 | /* Resolve all line numbers to PC's and verify that the addresses | |
6847 | are ok for the target. */ | |
0101ce28 JJ |
6848 | if (!pending) |
6849 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 6850 | |
1042e4c0 | 6851 | type_wanted = (traceflag |
7a697b8d | 6852 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
6853 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
6854 | ||
7a697b8d SS |
6855 | /* Fast tracepoints may have additional restrictions on location. */ |
6856 | if (type_wanted == bp_fast_tracepoint) | |
6857 | check_fast_tracepoint_sals (gdbarch, &sals); | |
6858 | ||
c3f6f71d JM |
6859 | /* Verify that condition can be parsed, before setting any |
6860 | breakpoints. Allocate a separate condition expression for each | |
6861 | breakpoint. */ | |
0101ce28 | 6862 | if (!pending) |
c3f6f71d | 6863 | { |
2f069f6f | 6864 | if (parse_condition_and_thread) |
72b2ff0e VP |
6865 | { |
6866 | /* Here we only parse 'arg' to separate condition | |
6867 | from thread number, so parsing in context of first | |
6868 | sal is OK. When setting the breakpoint we'll | |
6869 | re-parse it in context of each sal. */ | |
6870 | cond_string = NULL; | |
6871 | thread = -1; | |
4a306c9a JB |
6872 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
6873 | &thread, &task); | |
72b2ff0e VP |
6874 | if (cond_string) |
6875 | make_cleanup (xfree, cond_string); | |
6876 | } | |
2f069f6f | 6877 | else |
72b2ff0e VP |
6878 | { |
6879 | /* Create a private copy of condition string. */ | |
6880 | if (cond_string) | |
6881 | { | |
6882 | cond_string = xstrdup (cond_string); | |
6883 | make_cleanup (xfree, cond_string); | |
6884 | } | |
6885 | } | |
a6d9a66e | 6886 | create_breakpoints (gdbarch, sals, addr_string, cond_string, type_wanted, |
0101ce28 | 6887 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 6888 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 6889 | } |
0101ce28 JJ |
6890 | else |
6891 | { | |
fe3f5fa8 | 6892 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
6893 | struct breakpoint *b; |
6894 | ||
0101ce28 JJ |
6895 | make_cleanup (xfree, copy_arg); |
6896 | ||
a6d9a66e | 6897 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
6898 | set_breakpoint_count (breakpoint_count + 1); |
6899 | b->number = breakpoint_count; | |
72b2ff0e | 6900 | b->thread = -1; |
018d34a4 | 6901 | b->addr_string = addr_string[0]; |
72b2ff0e | 6902 | b->cond_string = NULL; |
0101ce28 | 6903 | b->ignore_count = ignore_count; |
0101ce28 | 6904 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 6905 | b->condition_not_parsed = 1; |
604133b5 | 6906 | b->ops = ops; |
41447f92 | 6907 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 6908 | b->pspace = current_program_space; |
74960c60 | 6909 | |
6c95b8df | 6910 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
6911 | && (b->type == bp_breakpoint |
6912 | || b->type == bp_hardware_breakpoint)) | |
6913 | b->enable_state = bp_startup_disabled; | |
6914 | ||
0101ce28 JJ |
6915 | mention (b); |
6916 | } | |
6917 | ||
c3f6f71d | 6918 | if (sals.nelts > 1) |
8a3fe4f8 AC |
6919 | warning (_("Multiple breakpoints were set.\n" |
6920 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
6921 | /* That's it. Discard the cleanups for data inserted into the |
6922 | breakpoint. */ | |
6923 | discard_cleanups (bkpt_chain); | |
6924 | /* But cleanup everything else. */ | |
c3f6f71d | 6925 | do_cleanups (old_chain); |
217dc9e2 | 6926 | |
80c99de1 | 6927 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 6928 | update_global_location_list (1); |
c3f6f71d | 6929 | } |
c906108c | 6930 | |
72b2ff0e VP |
6931 | /* Set a breakpoint. |
6932 | ARG is a string describing breakpoint address, | |
6933 | condition, and thread. | |
6934 | FLAG specifies if a breakpoint is hardware on, | |
6935 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
6936 | and BP_TEMPFLAG. */ | |
6937 | ||
98deb0da | 6938 | static void |
72b2ff0e | 6939 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 6940 | { |
72b2ff0e VP |
6941 | int hardwareflag = flag & BP_HARDWAREFLAG; |
6942 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 6943 | |
a6d9a66e UW |
6944 | break_command_really (get_current_arch (), |
6945 | arg, | |
98deb0da | 6946 | NULL, 0, 1 /* parse arg */, |
1042e4c0 | 6947 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 6948 | 0 /* Ignore count */, |
604133b5 AR |
6949 | pending_break_support, |
6950 | NULL /* breakpoint_ops */, | |
41447f92 VP |
6951 | from_tty, |
6952 | 1 /* enabled */); | |
c906108c SS |
6953 | } |
6954 | ||
72b2ff0e | 6955 | |
98deb0da | 6956 | void |
a6d9a66e UW |
6957 | set_breakpoint (struct gdbarch *gdbarch, |
6958 | char *address, char *condition, | |
c3f6f71d | 6959 | int hardwareflag, int tempflag, |
ce43223b | 6960 | int thread, int ignore_count, |
41447f92 | 6961 | int pending, int enabled) |
c3f6f71d | 6962 | { |
a6d9a66e UW |
6963 | break_command_really (gdbarch, |
6964 | address, condition, thread, | |
98deb0da | 6965 | 0 /* condition and thread are valid. */, |
1042e4c0 | 6966 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
6967 | ignore_count, |
6968 | pending | |
6969 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 6970 | NULL, 0, enabled); |
c3f6f71d JM |
6971 | } |
6972 | ||
6a048695 JB |
6973 | /* Adjust SAL to the first instruction past the function prologue. |
6974 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
6975 | the debugging information. explicit_pc and explicit_line are |
6976 | not modified. | |
6a048695 JB |
6977 | |
6978 | If SAL is already past the prologue, then do nothing. */ | |
6979 | ||
6980 | static void | |
6981 | skip_prologue_sal (struct symtab_and_line *sal) | |
6982 | { | |
6c95b8df | 6983 | struct symbol *sym; |
6a048695 | 6984 | struct symtab_and_line start_sal; |
6c95b8df | 6985 | struct cleanup *old_chain; |
6a048695 | 6986 | |
6c95b8df | 6987 | old_chain = save_current_space_and_thread (); |
6a048695 | 6988 | |
6c95b8df PA |
6989 | sym = find_pc_function (sal->pc); |
6990 | if (sym != NULL) | |
3daf8fe5 | 6991 | { |
6c95b8df PA |
6992 | start_sal = find_function_start_sal (sym, 1); |
6993 | if (sal->pc < start_sal.pc) | |
6994 | { | |
6995 | start_sal.explicit_line = sal->explicit_line; | |
6996 | start_sal.explicit_pc = sal->explicit_pc; | |
6997 | *sal = start_sal; | |
6998 | } | |
3daf8fe5 | 6999 | } |
6c95b8df PA |
7000 | |
7001 | do_cleanups (old_chain); | |
6a048695 | 7002 | } |
c3f6f71d | 7003 | |
c906108c SS |
7004 | /* Helper function for break_command_1 and disassemble_command. */ |
7005 | ||
7006 | void | |
fba45db2 | 7007 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7008 | { |
7009 | CORE_ADDR pc; | |
7010 | ||
7011 | if (sal->pc == 0 && sal->symtab != NULL) | |
7012 | { | |
7013 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7014 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7015 | sal->line, sal->symtab->filename); |
7016 | sal->pc = pc; | |
6a048695 JB |
7017 | |
7018 | /* If this SAL corresponds to a breakpoint inserted using | |
7019 | a line number, then skip the function prologue if necessary. */ | |
7020 | if (sal->explicit_line) | |
56ef84b1 TT |
7021 | { |
7022 | /* Preserve the original line number. */ | |
7023 | int saved_line = sal->line; | |
7024 | skip_prologue_sal (sal); | |
7025 | sal->line = saved_line; | |
7026 | } | |
c906108c SS |
7027 | } |
7028 | ||
7029 | if (sal->section == 0 && sal->symtab != NULL) | |
7030 | { | |
7031 | struct blockvector *bv; | |
c5aa993b JM |
7032 | struct block *b; |
7033 | struct symbol *sym; | |
c906108c | 7034 | |
801e3a5b | 7035 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7036 | if (bv != NULL) |
7037 | { | |
7f0df278 | 7038 | sym = block_linkage_function (b); |
c906108c SS |
7039 | if (sym != NULL) |
7040 | { | |
7041 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7042 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7043 | } |
7044 | else | |
7045 | { | |
7046 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7047 | have to look harder. This case can be executed if we have |
7048 | line numbers but no functions (as can happen in assembly | |
7049 | source). */ | |
c906108c | 7050 | |
c5aa993b | 7051 | struct minimal_symbol *msym; |
6c95b8df PA |
7052 | struct cleanup *old_chain = save_current_space_and_thread (); |
7053 | ||
7054 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7055 | |
7056 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7057 | if (msym) | |
714835d5 | 7058 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7059 | |
7060 | do_cleanups (old_chain); | |
c906108c SS |
7061 | } |
7062 | } | |
7063 | } | |
7064 | } | |
7065 | ||
7066 | void | |
fba45db2 | 7067 | break_command (char *arg, int from_tty) |
c906108c | 7068 | { |
db107f19 | 7069 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7070 | } |
7071 | ||
c906108c | 7072 | void |
fba45db2 | 7073 | tbreak_command (char *arg, int from_tty) |
c906108c | 7074 | { |
db107f19 | 7075 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7076 | } |
7077 | ||
c906108c | 7078 | static void |
fba45db2 | 7079 | hbreak_command (char *arg, int from_tty) |
c906108c | 7080 | { |
db107f19 | 7081 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7082 | } |
7083 | ||
7084 | static void | |
fba45db2 | 7085 | thbreak_command (char *arg, int from_tty) |
c906108c | 7086 | { |
db107f19 | 7087 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7088 | } |
7089 | ||
7090 | static void | |
fba45db2 | 7091 | stop_command (char *arg, int from_tty) |
c906108c | 7092 | { |
a3f17187 | 7093 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7094 | Usage: stop in <function | address>\n\ |
a3f17187 | 7095 | stop at <line>\n")); |
c906108c SS |
7096 | } |
7097 | ||
7098 | static void | |
fba45db2 | 7099 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7100 | { |
7101 | int badInput = 0; | |
7102 | ||
c5aa993b | 7103 | if (arg == (char *) NULL) |
c906108c SS |
7104 | badInput = 1; |
7105 | else if (*arg != '*') | |
7106 | { | |
7107 | char *argptr = arg; | |
7108 | int hasColon = 0; | |
7109 | ||
53a5351d JM |
7110 | /* look for a ':'. If this is a line number specification, then |
7111 | say it is bad, otherwise, it should be an address or | |
7112 | function/method name */ | |
c906108c | 7113 | while (*argptr && !hasColon) |
c5aa993b JM |
7114 | { |
7115 | hasColon = (*argptr == ':'); | |
7116 | argptr++; | |
7117 | } | |
c906108c SS |
7118 | |
7119 | if (hasColon) | |
c5aa993b | 7120 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7121 | else |
c5aa993b | 7122 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7123 | } |
7124 | ||
7125 | if (badInput) | |
a3f17187 | 7126 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7127 | else |
db107f19 | 7128 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7129 | } |
7130 | ||
7131 | static void | |
fba45db2 | 7132 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7133 | { |
7134 | int badInput = 0; | |
7135 | ||
c5aa993b | 7136 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7137 | badInput = 1; |
7138 | else | |
7139 | { | |
7140 | char *argptr = arg; | |
7141 | int hasColon = 0; | |
7142 | ||
7143 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7144 | it is probably a line number. */ |
c906108c | 7145 | while (*argptr && !hasColon) |
c5aa993b JM |
7146 | { |
7147 | hasColon = (*argptr == ':'); | |
7148 | argptr++; | |
7149 | } | |
c906108c SS |
7150 | |
7151 | if (hasColon) | |
c5aa993b | 7152 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7153 | else |
c5aa993b | 7154 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7155 | } |
7156 | ||
7157 | if (badInput) | |
a3f17187 | 7158 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7159 | else |
db107f19 | 7160 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7161 | } |
7162 | ||
53a5351d JM |
7163 | /* accessflag: hw_write: watch write, |
7164 | hw_read: watch read, | |
7165 | hw_access: watch access (read or write) */ | |
c906108c | 7166 | static void |
fba45db2 | 7167 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7168 | { |
a6d9a66e | 7169 | struct gdbarch *gdbarch = get_current_arch (); |
d983da9c | 7170 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
7171 | struct expression *exp; |
7172 | struct block *exp_valid_block; | |
7173 | struct value *val, *mark; | |
7174 | struct frame_info *frame; | |
c906108c SS |
7175 | char *exp_start = NULL; |
7176 | char *exp_end = NULL; | |
37e4754d | 7177 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7178 | int toklen; |
7179 | char *cond_start = NULL; | |
7180 | char *cond_end = NULL; | |
c906108c SS |
7181 | int i, other_type_used, target_resources_ok = 0; |
7182 | enum bptype bp_type; | |
7183 | int mem_cnt = 0; | |
37e4754d | 7184 | int thread = -1; |
c906108c | 7185 | |
37e4754d LM |
7186 | /* Make sure that we actually have parameters to parse. */ |
7187 | if (arg != NULL && arg[0] != '\0') | |
7188 | { | |
7189 | toklen = strlen (arg); /* Size of argument list. */ | |
7190 | ||
7191 | /* Points tok to the end of the argument list. */ | |
7192 | tok = arg + toklen - 1; | |
7193 | ||
7194 | /* Go backwards in the parameters list. Skip the last parameter. | |
7195 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7196 | be the thread identifier. */ | |
7197 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7198 | tok--; | |
7199 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7200 | tok--; | |
7201 | ||
7202 | /* Points end_tok to the beginning of the last token. */ | |
7203 | id_tok_start = tok + 1; | |
7204 | ||
7205 | /* Go backwards in the parameters list. Skip one more parameter. | |
7206 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7207 | reach a "thread" token. */ | |
7208 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7209 | tok--; | |
7210 | ||
7211 | end_tok = tok; | |
7212 | ||
7213 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7214 | tok--; | |
7215 | ||
7216 | /* Move the pointer forward to skip the whitespace and | |
7217 | calculate the length of the token. */ | |
7218 | tok++; | |
7219 | toklen = end_tok - tok; | |
7220 | ||
7221 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7222 | { | |
7223 | /* At this point we've found a "thread" token, which means | |
7224 | the user is trying to set a watchpoint that triggers | |
7225 | only in a specific thread. */ | |
7226 | char *endp; | |
7227 | ||
7228 | /* Extract the thread ID from the next token. */ | |
7229 | thread = strtol (id_tok_start, &endp, 0); | |
7230 | ||
7231 | /* Check if the user provided a valid numeric value for the | |
7232 | thread ID. */ | |
7233 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7234 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7235 | ||
7236 | /* Check if the thread actually exists. */ | |
7237 | if (!valid_thread_id (thread)) | |
7238 | error (_("Unknown thread %d."), thread); | |
7239 | ||
7240 | /* Truncate the string and get rid of the thread <thread_num> | |
7241 | parameter before the parameter list is parsed by the | |
7242 | evaluate_expression() function. */ | |
7243 | *tok = '\0'; | |
7244 | } | |
7245 | } | |
7246 | ||
7247 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7248 | innermost_block = NULL; |
7249 | exp_start = arg; | |
7250 | exp = parse_exp_1 (&arg, 0, 0); | |
7251 | exp_end = arg; | |
fa8a61dc TT |
7252 | /* Remove trailing whitespace from the expression before saving it. |
7253 | This makes the eventual display of the expression string a bit | |
7254 | prettier. */ | |
7255 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7256 | --exp_end; | |
7257 | ||
c906108c SS |
7258 | exp_valid_block = innermost_block; |
7259 | mark = value_mark (); | |
fa4727a6 DJ |
7260 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7261 | if (val != NULL) | |
7262 | release_value (val); | |
c906108c SS |
7263 | |
7264 | tok = arg; | |
7265 | while (*tok == ' ' || *tok == '\t') | |
7266 | tok++; | |
7267 | end_tok = tok; | |
7268 | ||
7269 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7270 | end_tok++; | |
7271 | ||
7272 | toklen = end_tok - tok; | |
7273 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7274 | { | |
2d134ed3 PA |
7275 | struct expression *cond; |
7276 | ||
c906108c SS |
7277 | tok = cond_start = end_tok + 1; |
7278 | cond = parse_exp_1 (&tok, 0, 0); | |
2d134ed3 | 7279 | xfree (cond); |
c906108c SS |
7280 | cond_end = tok; |
7281 | } | |
7282 | if (*tok) | |
8a3fe4f8 | 7283 | error (_("Junk at end of command.")); |
c906108c | 7284 | |
53a5351d | 7285 | if (accessflag == hw_read) |
c5aa993b | 7286 | bp_type = bp_read_watchpoint; |
53a5351d | 7287 | else if (accessflag == hw_access) |
c5aa993b JM |
7288 | bp_type = bp_access_watchpoint; |
7289 | else | |
7290 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
7291 | |
7292 | mem_cnt = can_use_hardware_watchpoint (val); | |
7293 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 7294 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
7295 | if (mem_cnt != 0) |
7296 | { | |
7297 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 7298 | target_resources_ok = |
d92524f1 | 7299 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 7300 | other_type_used); |
c5aa993b | 7301 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7302 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 7303 | |
c5aa993b | 7304 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7305 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 7306 | } |
c906108c | 7307 | |
4d28f7a8 KB |
7308 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
7309 | watchpoint could not be set. */ | |
7310 | if (!mem_cnt || target_resources_ok <= 0) | |
7311 | bp_type = bp_watchpoint; | |
7312 | ||
d983da9c | 7313 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
7314 | |
7315 | /* If the expression is "local", then set up a "watchpoint scope" | |
7316 | breakpoint at the point where we've left the scope of the watchpoint | |
7317 | expression. Create the scope breakpoint before the watchpoint, so | |
7318 | that we will encounter it first in bpstat_stop_status. */ | |
edb3359d | 7319 | if (innermost_block && frame) |
d983da9c | 7320 | { |
edb3359d DJ |
7321 | if (frame_id_p (frame_unwind_caller_id (frame))) |
7322 | { | |
7323 | scope_breakpoint | |
a6d9a66e UW |
7324 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
7325 | frame_unwind_caller_pc (frame), | |
edb3359d | 7326 | bp_watchpoint_scope); |
d983da9c | 7327 | |
edb3359d | 7328 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 7329 | |
edb3359d DJ |
7330 | /* Automatically delete the breakpoint when it hits. */ |
7331 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 7332 | |
edb3359d DJ |
7333 | /* Only break in the proper frame (help with recursion). */ |
7334 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 7335 | |
edb3359d | 7336 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
7337 | scope_breakpoint->loc->gdbarch |
7338 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
7339 | scope_breakpoint->loc->requested_address |
7340 | = frame_unwind_caller_pc (frame); | |
7341 | scope_breakpoint->loc->address | |
a6d9a66e UW |
7342 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
7343 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
7344 | scope_breakpoint->type); |
7345 | } | |
d983da9c DJ |
7346 | } |
7347 | ||
c906108c | 7348 | /* Now set up the breakpoint. */ |
2d134ed3 | 7349 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
7350 | set_breakpoint_count (breakpoint_count + 1); |
7351 | b->number = breakpoint_count; | |
37e4754d | 7352 | b->thread = thread; |
b5de0fa7 | 7353 | b->disposition = disp_donttouch; |
c906108c SS |
7354 | b->exp = exp; |
7355 | b->exp_valid_block = exp_valid_block; | |
7356 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
7357 | b->val = val; | |
fa4727a6 | 7358 | b->val_valid = 1; |
c906108c SS |
7359 | if (cond_start) |
7360 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
7361 | else | |
7362 | b->cond_string = 0; | |
c5aa993b | 7363 | |
c906108c | 7364 | if (frame) |
f6bc2008 PA |
7365 | { |
7366 | b->watchpoint_frame = get_frame_id (frame); | |
7367 | b->watchpoint_thread = inferior_ptid; | |
7368 | } | |
c906108c | 7369 | else |
f6bc2008 PA |
7370 | { |
7371 | b->watchpoint_frame = null_frame_id; | |
7372 | b->watchpoint_thread = null_ptid; | |
7373 | } | |
c906108c | 7374 | |
d983da9c | 7375 | if (scope_breakpoint != NULL) |
c906108c | 7376 | { |
d983da9c DJ |
7377 | /* The scope breakpoint is related to the watchpoint. We will |
7378 | need to act on them together. */ | |
7379 | b->related_breakpoint = scope_breakpoint; | |
7380 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 7381 | } |
d983da9c | 7382 | |
c906108c | 7383 | value_free_to_mark (mark); |
2d134ed3 PA |
7384 | |
7385 | /* Finally update the new watchpoint. This creates the locations | |
7386 | that should be inserted. */ | |
7387 | update_watchpoint (b, 1); | |
7388 | ||
c906108c | 7389 | mention (b); |
b60e7edf | 7390 | update_global_location_list (1); |
c906108c SS |
7391 | } |
7392 | ||
7393 | /* Return count of locations need to be watched and can be handled | |
7394 | in hardware. If the watchpoint can not be handled | |
7395 | in hardware return zero. */ | |
7396 | ||
c906108c | 7397 | static int |
fba45db2 | 7398 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
7399 | { |
7400 | int found_memory_cnt = 0; | |
2e70b7b9 | 7401 | struct value *head = v; |
c906108c SS |
7402 | |
7403 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 7404 | if (!can_use_hw_watchpoints) |
c906108c | 7405 | return 0; |
c5aa993b | 7406 | |
5c44784c JM |
7407 | /* Make sure that the value of the expression depends only upon |
7408 | memory contents, and values computed from them within GDB. If we | |
7409 | find any register references or function calls, we can't use a | |
7410 | hardware watchpoint. | |
7411 | ||
7412 | The idea here is that evaluating an expression generates a series | |
7413 | of values, one holding the value of every subexpression. (The | |
7414 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
7415 | a*b+c.) GDB's values hold almost enough information to establish | |
7416 | the criteria given above --- they identify memory lvalues, | |
7417 | register lvalues, computed values, etcetera. So we can evaluate | |
7418 | the expression, and then scan the chain of values that leaves | |
7419 | behind to decide whether we can detect any possible change to the | |
7420 | expression's final value using only hardware watchpoints. | |
7421 | ||
7422 | However, I don't think that the values returned by inferior | |
7423 | function calls are special in any way. So this function may not | |
7424 | notice that an expression involving an inferior function call | |
7425 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 7426 | for (; v; v = value_next (v)) |
c906108c | 7427 | { |
5c44784c | 7428 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 7429 | { |
d69fe07e | 7430 | if (value_lazy (v)) |
5c44784c JM |
7431 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
7432 | we either just used its address (e.g., `a' in `a.b') or | |
7433 | we never needed it at all (e.g., `a' in `a,b'). */ | |
7434 | ; | |
53a5351d | 7435 | else |
5c44784c JM |
7436 | { |
7437 | /* Ahh, memory we actually used! Check if we can cover | |
7438 | it with hardware watchpoints. */ | |
df407dfe | 7439 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
7440 | |
7441 | /* We only watch structs and arrays if user asked for it | |
7442 | explicitly, never if they just happen to appear in a | |
7443 | middle of some value chain. */ | |
7444 | if (v == head | |
7445 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
7446 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
7447 | { | |
42ae5230 | 7448 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 7449 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 7450 | |
d92524f1 | 7451 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
7452 | return 0; |
7453 | else | |
7454 | found_memory_cnt++; | |
7455 | } | |
5c44784c | 7456 | } |
c5aa993b | 7457 | } |
5086187c AC |
7458 | else if (VALUE_LVAL (v) != not_lval |
7459 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 7460 | return 0; /* ??? What does this represent? */ |
5086187c | 7461 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 7462 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
7463 | } |
7464 | ||
7465 | /* The expression itself looks suitable for using a hardware | |
7466 | watchpoint, but give the target machine a chance to reject it. */ | |
7467 | return found_memory_cnt; | |
7468 | } | |
7469 | ||
8b93c638 | 7470 | void |
fba45db2 | 7471 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7472 | { |
7473 | watch_command (arg, from_tty); | |
7474 | } | |
8926118c | 7475 | |
c5aa993b | 7476 | static void |
fba45db2 | 7477 | watch_command (char *arg, int from_tty) |
c906108c | 7478 | { |
53a5351d | 7479 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
7480 | } |
7481 | ||
8b93c638 | 7482 | void |
fba45db2 | 7483 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7484 | { |
7485 | rwatch_command (arg, from_tty); | |
7486 | } | |
8926118c | 7487 | |
c5aa993b | 7488 | static void |
fba45db2 | 7489 | rwatch_command (char *arg, int from_tty) |
c906108c | 7490 | { |
53a5351d | 7491 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
7492 | } |
7493 | ||
8b93c638 | 7494 | void |
fba45db2 | 7495 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7496 | { |
7497 | awatch_command (arg, from_tty); | |
7498 | } | |
8926118c | 7499 | |
c5aa993b | 7500 | static void |
fba45db2 | 7501 | awatch_command (char *arg, int from_tty) |
c906108c | 7502 | { |
53a5351d | 7503 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 7504 | } |
c906108c | 7505 | \f |
c5aa993b | 7506 | |
43ff13b4 | 7507 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
7508 | because it uses the mechanisms of breakpoints. */ |
7509 | ||
bfec99b2 PA |
7510 | struct until_break_command_continuation_args |
7511 | { | |
7512 | struct breakpoint *breakpoint; | |
7513 | struct breakpoint *breakpoint2; | |
7514 | }; | |
7515 | ||
43ff13b4 JM |
7516 | /* This function is called by fetch_inferior_event via the |
7517 | cmd_continuation pointer, to complete the until command. It takes | |
7518 | care of cleaning up the temporary breakpoints set up by the until | |
7519 | command. */ | |
c2c6d25f | 7520 | static void |
604ead4a | 7521 | until_break_command_continuation (void *arg) |
43ff13b4 | 7522 | { |
bfec99b2 PA |
7523 | struct until_break_command_continuation_args *a = arg; |
7524 | ||
7525 | delete_breakpoint (a->breakpoint); | |
7526 | if (a->breakpoint2) | |
7527 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
7528 | } |
7529 | ||
c906108c | 7530 | void |
ae66c1fc | 7531 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
7532 | { |
7533 | struct symtabs_and_lines sals; | |
7534 | struct symtab_and_line sal; | |
206415a3 | 7535 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 7536 | struct breakpoint *breakpoint; |
f107f563 | 7537 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
7538 | struct cleanup *old_chain; |
7539 | ||
7540 | clear_proceed_status (); | |
7541 | ||
7542 | /* Set a breakpoint where the user wants it and at return from | |
7543 | this function */ | |
c5aa993b | 7544 | |
c906108c SS |
7545 | if (default_breakpoint_valid) |
7546 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 7547 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 7548 | else |
53a5351d | 7549 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 7550 | 0, (char ***) NULL, NULL); |
c5aa993b | 7551 | |
c906108c | 7552 | if (sals.nelts != 1) |
8a3fe4f8 | 7553 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 7554 | |
c906108c | 7555 | sal = sals.sals[0]; |
b8c9b27d | 7556 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 7557 | |
c906108c | 7558 | if (*arg) |
8a3fe4f8 | 7559 | error (_("Junk at end of arguments.")); |
c5aa993b | 7560 | |
c906108c | 7561 | resolve_sal_pc (&sal); |
c5aa993b | 7562 | |
ae66c1fc EZ |
7563 | if (anywhere) |
7564 | /* If the user told us to continue until a specified location, | |
7565 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
7566 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
7567 | null_frame_id, bp_until); | |
ae66c1fc | 7568 | else |
edb3359d | 7569 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 7570 | at the very same frame. */ |
a6d9a66e UW |
7571 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
7572 | get_stack_frame_id (frame), | |
ae66c1fc | 7573 | bp_until); |
c5aa993b | 7574 | |
f107f563 | 7575 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 7576 | |
ae66c1fc EZ |
7577 | /* Keep within the current frame, or in frames called by the current |
7578 | one. */ | |
edb3359d DJ |
7579 | |
7580 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 7581 | { |
edb3359d DJ |
7582 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
7583 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
7584 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
7585 | sal, | |
edb3359d | 7586 | frame_unwind_caller_id (frame), |
f107f563 VP |
7587 | bp_until); |
7588 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 7589 | } |
c5aa993b | 7590 | |
c906108c | 7591 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
7592 | |
7593 | /* If we are running asynchronously, and proceed call above has actually | |
7594 | managed to start the target, arrange for breakpoints to be | |
7595 | deleted when the target stops. Otherwise, we're already stopped and | |
7596 | delete breakpoints via cleanup chain. */ | |
7597 | ||
8ea051c5 | 7598 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 7599 | { |
bfec99b2 PA |
7600 | struct until_break_command_continuation_args *args; |
7601 | args = xmalloc (sizeof (*args)); | |
f107f563 | 7602 | |
bfec99b2 PA |
7603 | args->breakpoint = breakpoint; |
7604 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
7605 | |
7606 | discard_cleanups (old_chain); | |
95e54da7 PA |
7607 | add_continuation (inferior_thread (), |
7608 | until_break_command_continuation, args, | |
604ead4a | 7609 | xfree); |
f107f563 VP |
7610 | } |
7611 | else | |
c5aa993b | 7612 | do_cleanups (old_chain); |
c906108c | 7613 | } |
ae66c1fc | 7614 | |
c906108c | 7615 | static void |
fba45db2 | 7616 | ep_skip_leading_whitespace (char **s) |
c906108c | 7617 | { |
c5aa993b JM |
7618 | if ((s == NULL) || (*s == NULL)) |
7619 | return; | |
7620 | while (isspace (**s)) | |
7621 | *s += 1; | |
c906108c | 7622 | } |
c5aa993b | 7623 | |
c906108c SS |
7624 | /* This function attempts to parse an optional "if <cond>" clause |
7625 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 7626 | |
c906108c SS |
7627 | Else, it returns a pointer to the condition string. (It does not |
7628 | attempt to evaluate the string against a particular block.) And, | |
7629 | it updates arg to point to the first character following the parsed | |
7630 | if clause in the arg string. */ | |
53a5351d | 7631 | |
c906108c | 7632 | static char * |
fba45db2 | 7633 | ep_parse_optional_if_clause (char **arg) |
c906108c | 7634 | { |
c5aa993b JM |
7635 | char *cond_string; |
7636 | ||
7637 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 7638 | return NULL; |
c5aa993b | 7639 | |
c906108c SS |
7640 | /* Skip the "if" keyword. */ |
7641 | (*arg) += 2; | |
c5aa993b | 7642 | |
c906108c SS |
7643 | /* Skip any extra leading whitespace, and record the start of the |
7644 | condition string. */ | |
7645 | ep_skip_leading_whitespace (arg); | |
7646 | cond_string = *arg; | |
c5aa993b | 7647 | |
c906108c SS |
7648 | /* Assume that the condition occupies the remainder of the arg string. */ |
7649 | (*arg) += strlen (cond_string); | |
c5aa993b | 7650 | |
c906108c SS |
7651 | return cond_string; |
7652 | } | |
c5aa993b | 7653 | |
c906108c SS |
7654 | /* This function attempts to parse an optional filename from the arg |
7655 | string. If one is not found, it returns NULL. | |
c5aa993b | 7656 | |
c906108c SS |
7657 | Else, it returns a pointer to the parsed filename. (This function |
7658 | makes no attempt to verify that a file of that name exists, or is | |
7659 | accessible.) And, it updates arg to point to the first character | |
7660 | following the parsed filename in the arg string. | |
c5aa993b | 7661 | |
c906108c SS |
7662 | Note that clients needing to preserve the returned filename for |
7663 | future access should copy it to their own buffers. */ | |
7664 | static char * | |
fba45db2 | 7665 | ep_parse_optional_filename (char **arg) |
c906108c | 7666 | { |
c5aa993b JM |
7667 | static char filename[1024]; |
7668 | char *arg_p = *arg; | |
7669 | int i; | |
7670 | char c; | |
7671 | ||
c906108c SS |
7672 | if ((*arg_p == '\0') || isspace (*arg_p)) |
7673 | return NULL; | |
c5aa993b JM |
7674 | |
7675 | for (i = 0;; i++) | |
c906108c SS |
7676 | { |
7677 | c = *arg_p; | |
7678 | if (isspace (c)) | |
c5aa993b | 7679 | c = '\0'; |
c906108c SS |
7680 | filename[i] = c; |
7681 | if (c == '\0') | |
c5aa993b | 7682 | break; |
c906108c SS |
7683 | arg_p++; |
7684 | } | |
7685 | *arg = arg_p; | |
c5aa993b | 7686 | |
c906108c SS |
7687 | return filename; |
7688 | } | |
c5aa993b | 7689 | |
c906108c SS |
7690 | /* Commands to deal with catching events, such as signals, exceptions, |
7691 | process start/exit, etc. */ | |
c5aa993b JM |
7692 | |
7693 | typedef enum | |
7694 | { | |
44feb3ce TT |
7695 | catch_fork_temporary, catch_vfork_temporary, |
7696 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
7697 | } |
7698 | catch_fork_kind; | |
7699 | ||
c906108c | 7700 | static void |
44feb3ce | 7701 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 7702 | { |
a6d9a66e | 7703 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 7704 | char *cond_string = NULL; |
44feb3ce TT |
7705 | catch_fork_kind fork_kind; |
7706 | int tempflag; | |
7707 | ||
7708 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
7709 | tempflag = (fork_kind == catch_fork_temporary | |
7710 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 7711 | |
44feb3ce TT |
7712 | if (!arg) |
7713 | arg = ""; | |
c906108c | 7714 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 7715 | |
c906108c | 7716 | /* The allowed syntax is: |
c5aa993b JM |
7717 | catch [v]fork |
7718 | catch [v]fork if <cond> | |
7719 | ||
c906108c SS |
7720 | First, check if there's an if clause. */ |
7721 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 7722 | |
c906108c | 7723 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 7724 | error (_("Junk at end of arguments.")); |
c5aa993b | 7725 | |
c906108c SS |
7726 | /* If this target supports it, create a fork or vfork catchpoint |
7727 | and enable reporting of such events. */ | |
c5aa993b JM |
7728 | switch (fork_kind) |
7729 | { | |
44feb3ce TT |
7730 | case catch_fork_temporary: |
7731 | case catch_fork_permanent: | |
a6d9a66e | 7732 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 7733 | &catch_fork_breakpoint_ops); |
c906108c | 7734 | break; |
44feb3ce TT |
7735 | case catch_vfork_temporary: |
7736 | case catch_vfork_permanent: | |
a6d9a66e | 7737 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 7738 | &catch_vfork_breakpoint_ops); |
c906108c | 7739 | break; |
c5aa993b | 7740 | default: |
8a3fe4f8 | 7741 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 7742 | break; |
c5aa993b | 7743 | } |
c906108c SS |
7744 | } |
7745 | ||
7746 | static void | |
44feb3ce | 7747 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 7748 | { |
a6d9a66e | 7749 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7750 | int tempflag; |
c5aa993b | 7751 | char *cond_string = NULL; |
c906108c | 7752 | |
44feb3ce TT |
7753 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7754 | ||
7755 | if (!arg) | |
7756 | arg = ""; | |
c906108c SS |
7757 | ep_skip_leading_whitespace (&arg); |
7758 | ||
7759 | /* The allowed syntax is: | |
c5aa993b JM |
7760 | catch exec |
7761 | catch exec if <cond> | |
c906108c SS |
7762 | |
7763 | First, check if there's an if clause. */ | |
7764 | cond_string = ep_parse_optional_if_clause (&arg); | |
7765 | ||
7766 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 7767 | error (_("Junk at end of arguments.")); |
c906108c SS |
7768 | |
7769 | /* If this target supports it, create an exec catchpoint | |
7770 | and enable reporting of such events. */ | |
a6d9a66e UW |
7771 | create_catchpoint (gdbarch, tempflag, cond_string, |
7772 | &catch_exec_breakpoint_ops); | |
c906108c | 7773 | } |
c5aa993b | 7774 | |
3086aeae DJ |
7775 | static enum print_stop_action |
7776 | print_exception_catchpoint (struct breakpoint *b) | |
7777 | { | |
ade92717 | 7778 | int bp_temp, bp_throw; |
3086aeae | 7779 | |
ade92717 | 7780 | annotate_catchpoint (b->number); |
3086aeae | 7781 | |
ade92717 AR |
7782 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
7783 | if (b->loc->address != b->loc->requested_address) | |
7784 | breakpoint_adjustment_warning (b->loc->requested_address, | |
7785 | b->loc->address, | |
7786 | b->number, 1); | |
df2b6d2d | 7787 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
7788 | ui_out_text (uiout, |
7789 | bp_temp ? "Temporary catchpoint " | |
7790 | : "Catchpoint "); | |
7791 | if (!ui_out_is_mi_like_p (uiout)) | |
7792 | ui_out_field_int (uiout, "bkptno", b->number); | |
7793 | ui_out_text (uiout, | |
c0b37c48 AR |
7794 | bp_throw ? " (exception thrown), " |
7795 | : " (exception caught), "); | |
ade92717 AR |
7796 | if (ui_out_is_mi_like_p (uiout)) |
7797 | { | |
7798 | ui_out_field_string (uiout, "reason", | |
7799 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
7800 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7801 | ui_out_field_int (uiout, "bkptno", b->number); | |
7802 | } | |
3086aeae DJ |
7803 | return PRINT_SRC_AND_LOC; |
7804 | } | |
7805 | ||
7806 | static void | |
a6d9a66e | 7807 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 7808 | { |
79a45b7d TT |
7809 | struct value_print_options opts; |
7810 | get_user_print_options (&opts); | |
7811 | if (opts.addressprint) | |
3086aeae DJ |
7812 | { |
7813 | annotate_field (4); | |
604133b5 AR |
7814 | if (b->loc == NULL || b->loc->shlib_disabled) |
7815 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
7816 | else | |
5af949e3 UW |
7817 | ui_out_field_core_addr (uiout, "addr", |
7818 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
7819 | } |
7820 | annotate_field (5); | |
604133b5 | 7821 | if (b->loc) |
a6d9a66e | 7822 | *last_loc = b->loc; |
3086aeae DJ |
7823 | if (strstr (b->addr_string, "throw") != NULL) |
7824 | ui_out_field_string (uiout, "what", "exception throw"); | |
7825 | else | |
7826 | ui_out_field_string (uiout, "what", "exception catch"); | |
7827 | } | |
7828 | ||
7829 | static void | |
7830 | print_mention_exception_catchpoint (struct breakpoint *b) | |
7831 | { | |
ade92717 AR |
7832 | int bp_temp; |
7833 | int bp_throw; | |
7834 | ||
df2b6d2d | 7835 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
7836 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
7837 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
7838 | : _("Catchpoint ")); | |
7839 | ui_out_field_int (uiout, "bkptno", b->number); | |
7840 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
7841 | : _(" (catch)")); | |
3086aeae DJ |
7842 | } |
7843 | ||
7844 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
7845 | NULL, /* insert */ |
7846 | NULL, /* remove */ | |
7847 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
7848 | print_exception_catchpoint, |
7849 | print_one_exception_catchpoint, | |
7850 | print_mention_exception_catchpoint | |
7851 | }; | |
7852 | ||
7853 | static int | |
7854 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
7855 | enum exception_event_kind ex_event, int from_tty) | |
7856 | { | |
604133b5 AR |
7857 | char *trigger_func_name; |
7858 | ||
3086aeae | 7859 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 7860 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 7861 | else |
604133b5 | 7862 | trigger_func_name = "__cxa_throw"; |
3086aeae | 7863 | |
a6d9a66e UW |
7864 | break_command_really (get_current_arch (), |
7865 | trigger_func_name, cond_string, -1, | |
604133b5 | 7866 | 0 /* condition and thread are valid. */, |
1042e4c0 | 7867 | tempflag, 0, 0, |
604133b5 AR |
7868 | 0, |
7869 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
7870 | &gnu_v3_exception_catchpoint_ops, from_tty, |
7871 | 1 /* enabled */); | |
3086aeae | 7872 | |
3086aeae DJ |
7873 | return 1; |
7874 | } | |
7875 | ||
c5aa993b | 7876 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
7877 | |
7878 | static void | |
fba45db2 KB |
7879 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
7880 | int tempflag, int from_tty) | |
c906108c | 7881 | { |
c5aa993b JM |
7882 | char *cond_string = NULL; |
7883 | struct symtab_and_line *sal = NULL; | |
7884 | ||
44feb3ce TT |
7885 | if (!arg) |
7886 | arg = ""; | |
c906108c | 7887 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 7888 | |
c906108c SS |
7889 | cond_string = ep_parse_optional_if_clause (&arg); |
7890 | ||
7891 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 7892 | error (_("Junk at end of arguments.")); |
c906108c | 7893 | |
059fb39f PM |
7894 | if (ex_event != EX_EVENT_THROW |
7895 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 7896 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 7897 | |
3086aeae DJ |
7898 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
7899 | return; | |
7900 | ||
8a3fe4f8 | 7901 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
7902 | } |
7903 | ||
44feb3ce TT |
7904 | /* Implementation of "catch catch" command. */ |
7905 | ||
7906 | static void | |
7907 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7908 | { | |
7909 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7910 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
7911 | } | |
7912 | ||
7913 | /* Implementation of "catch throw" command. */ | |
7914 | ||
7915 | static void | |
7916 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7917 | { | |
7918 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7919 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
7920 | } | |
7921 | ||
f7f9143b JB |
7922 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
7923 | ||
7924 | static void | |
a6d9a66e UW |
7925 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
7926 | struct symtab_and_line sal, | |
f7f9143b JB |
7927 | char *addr_string, |
7928 | char *exp_string, | |
7929 | char *cond_string, | |
7930 | struct expression *cond, | |
7931 | struct breakpoint_ops *ops, | |
7932 | int tempflag, | |
7933 | int from_tty) | |
7934 | { | |
7935 | struct breakpoint *b; | |
7936 | ||
7937 | if (from_tty) | |
7938 | { | |
5af949e3 UW |
7939 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
7940 | if (!loc_gdbarch) | |
7941 | loc_gdbarch = gdbarch; | |
7942 | ||
6c95b8df PA |
7943 | describe_other_breakpoints (loc_gdbarch, |
7944 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
7945 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
7946 | version for exception catchpoints, because two catchpoints | |
7947 | used for different exception names will use the same address. | |
7948 | In this case, a "breakpoint ... also set at..." warning is | |
7949 | unproductive. Besides. the warning phrasing is also a bit | |
7950 | inapropriate, we should use the word catchpoint, and tell | |
7951 | the user what type of catchpoint it is. The above is good | |
7952 | enough for now, though. */ | |
7953 | } | |
7954 | ||
a6d9a66e | 7955 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
7956 | set_breakpoint_count (breakpoint_count + 1); |
7957 | ||
7958 | b->enable_state = bp_enabled; | |
7959 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
7960 | b->number = breakpoint_count; | |
7961 | b->ignore_count = 0; | |
511a6cd4 | 7962 | b->loc->cond = cond; |
f7f9143b JB |
7963 | b->addr_string = addr_string; |
7964 | b->language = language_ada; | |
7965 | b->cond_string = cond_string; | |
7966 | b->exp_string = exp_string; | |
7967 | b->thread = -1; | |
7968 | b->ops = ops; | |
f7f9143b JB |
7969 | |
7970 | mention (b); | |
b60e7edf | 7971 | update_global_location_list (1); |
f7f9143b JB |
7972 | } |
7973 | ||
7974 | /* Implement the "catch exception" command. */ | |
7975 | ||
7976 | static void | |
44feb3ce TT |
7977 | catch_ada_exception_command (char *arg, int from_tty, |
7978 | struct cmd_list_element *command) | |
f7f9143b | 7979 | { |
a6d9a66e | 7980 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7981 | int tempflag; |
f7f9143b JB |
7982 | struct symtab_and_line sal; |
7983 | enum bptype type; | |
7984 | char *addr_string = NULL; | |
7985 | char *exp_string = NULL; | |
7986 | char *cond_string = NULL; | |
7987 | struct expression *cond = NULL; | |
7988 | struct breakpoint_ops *ops = NULL; | |
7989 | ||
44feb3ce TT |
7990 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7991 | ||
7992 | if (!arg) | |
7993 | arg = ""; | |
f7f9143b JB |
7994 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
7995 | &cond_string, &cond, &ops); | |
a6d9a66e | 7996 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
7997 | cond_string, cond, ops, tempflag, |
7998 | from_tty); | |
7999 | } | |
8000 | ||
a96d9b2e SDJ |
8001 | /* Cleanup function for a syscall filter list. */ |
8002 | static void | |
8003 | clean_up_filters (void *arg) | |
8004 | { | |
8005 | VEC(int) *iter = *(VEC(int) **) arg; | |
8006 | VEC_free (int, iter); | |
8007 | } | |
8008 | ||
8009 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8010 | filter list, or NULL if no filtering is required. */ | |
8011 | static VEC(int) * | |
8012 | catch_syscall_split_args (char *arg) | |
8013 | { | |
8014 | VEC(int) *result = NULL; | |
8015 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8016 | ||
8017 | while (*arg != '\0') | |
8018 | { | |
8019 | int i, syscall_number; | |
8020 | char *endptr; | |
8021 | char cur_name[128]; | |
8022 | struct syscall s; | |
8023 | ||
8024 | /* Skip whitespace. */ | |
8025 | while (isspace (*arg)) | |
8026 | arg++; | |
8027 | ||
8028 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8029 | cur_name[i] = arg[i]; | |
8030 | cur_name[i] = '\0'; | |
8031 | arg += i; | |
8032 | ||
8033 | /* Check if the user provided a syscall name or a number. */ | |
8034 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8035 | if (*endptr == '\0') | |
bccd0dd2 | 8036 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8037 | else |
8038 | { | |
8039 | /* We have a name. Let's check if it's valid and convert it | |
8040 | to a number. */ | |
8041 | get_syscall_by_name (cur_name, &s); | |
8042 | ||
8043 | if (s.number == UNKNOWN_SYSCALL) | |
8044 | /* Here we have to issue an error instead of a warning, because | |
8045 | GDB cannot do anything useful if there's no syscall number to | |
8046 | be caught. */ | |
8047 | error (_("Unknown syscall name '%s'."), cur_name); | |
8048 | } | |
8049 | ||
8050 | /* Ok, it's valid. */ | |
8051 | VEC_safe_push (int, result, s.number); | |
8052 | } | |
8053 | ||
8054 | discard_cleanups (cleanup); | |
8055 | return result; | |
8056 | } | |
8057 | ||
8058 | /* Implement the "catch syscall" command. */ | |
8059 | ||
8060 | static void | |
8061 | catch_syscall_command_1 (char *arg, int from_tty, struct cmd_list_element *command) | |
8062 | { | |
8063 | int tempflag; | |
8064 | VEC(int) *filter; | |
8065 | struct syscall s; | |
8066 | struct gdbarch *gdbarch = get_current_arch (); | |
8067 | ||
8068 | /* Checking if the feature if supported. */ | |
8069 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8070 | error (_("The feature 'catch syscall' is not supported on \ | |
8071 | this architeture yet.")); | |
8072 | ||
8073 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8074 | ||
8075 | ep_skip_leading_whitespace (&arg); | |
8076 | ||
8077 | /* We need to do this first "dummy" translation in order | |
8078 | to get the syscall XML file loaded or, most important, | |
8079 | to display a warning to the user if there's no XML file | |
8080 | for his/her architecture. */ | |
8081 | get_syscall_by_number (0, &s); | |
8082 | ||
8083 | /* The allowed syntax is: | |
8084 | catch syscall | |
8085 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8086 | ||
8087 | Let's check if there's a syscall name. */ | |
8088 | ||
8089 | if (arg != NULL) | |
8090 | filter = catch_syscall_split_args (arg); | |
8091 | else | |
8092 | filter = NULL; | |
8093 | ||
8094 | create_syscall_event_catchpoint (tempflag, filter, | |
8095 | &catch_syscall_breakpoint_ops); | |
8096 | } | |
8097 | ||
f7f9143b JB |
8098 | /* Implement the "catch assert" command. */ |
8099 | ||
8100 | static void | |
44feb3ce | 8101 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8102 | { |
a6d9a66e | 8103 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8104 | int tempflag; |
f7f9143b JB |
8105 | struct symtab_and_line sal; |
8106 | char *addr_string = NULL; | |
8107 | struct breakpoint_ops *ops = NULL; | |
8108 | ||
44feb3ce TT |
8109 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8110 | ||
8111 | if (!arg) | |
8112 | arg = ""; | |
f7f9143b | 8113 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8114 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8115 | ops, tempflag, from_tty); | |
f7f9143b JB |
8116 | } |
8117 | ||
c906108c | 8118 | static void |
fba45db2 | 8119 | catch_command (char *arg, int from_tty) |
c906108c | 8120 | { |
44feb3ce | 8121 | error (_("Catch requires an event name.")); |
c906108c SS |
8122 | } |
8123 | \f | |
8124 | ||
8125 | static void | |
fba45db2 | 8126 | tcatch_command (char *arg, int from_tty) |
c906108c | 8127 | { |
44feb3ce | 8128 | error (_("Catch requires an event name.")); |
c906108c SS |
8129 | } |
8130 | ||
80f8a6eb | 8131 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8132 | |
8133 | static void | |
fba45db2 | 8134 | clear_command (char *arg, int from_tty) |
c906108c | 8135 | { |
d6e956e5 VP |
8136 | struct breakpoint *b; |
8137 | VEC(breakpoint_p) *found = 0; | |
8138 | int ix; | |
c906108c SS |
8139 | int default_match; |
8140 | struct symtabs_and_lines sals; | |
8141 | struct symtab_and_line sal; | |
c906108c SS |
8142 | int i; |
8143 | ||
8144 | if (arg) | |
8145 | { | |
8146 | sals = decode_line_spec (arg, 1); | |
8147 | default_match = 0; | |
8148 | } | |
8149 | else | |
8150 | { | |
c5aa993b | 8151 | sals.sals = (struct symtab_and_line *) |
c906108c | 8152 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8153 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8154 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8155 | sal.line = default_breakpoint_line; |
8156 | sal.symtab = default_breakpoint_symtab; | |
8157 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8158 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8159 | if (sal.symtab == 0) |
8a3fe4f8 | 8160 | error (_("No source file specified.")); |
c906108c SS |
8161 | |
8162 | sals.sals[0] = sal; | |
8163 | sals.nelts = 1; | |
8164 | ||
8165 | default_match = 1; | |
8166 | } | |
8167 | ||
ed0616c6 VP |
8168 | /* We don't call resolve_sal_pc here. That's not |
8169 | as bad as it seems, because all existing breakpoints | |
8170 | typically have both file/line and pc set. So, if | |
8171 | clear is given file/line, we can match this to existing | |
8172 | breakpoint without obtaining pc at all. | |
8173 | ||
8174 | We only support clearing given the address explicitly | |
8175 | present in breakpoint table. Say, we've set breakpoint | |
8176 | at file:line. There were several PC values for that file:line, | |
8177 | due to optimization, all in one block. | |
8178 | We've picked one PC value. If "clear" is issued with another | |
8179 | PC corresponding to the same file:line, the breakpoint won't | |
8180 | be cleared. We probably can still clear the breakpoint, but | |
8181 | since the other PC value is never presented to user, user | |
8182 | can only find it by guessing, and it does not seem important | |
8183 | to support that. */ | |
8184 | ||
c906108c | 8185 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8186 | to it. Do it in two passes, solely to preserve the current |
8187 | behavior that from_tty is forced true if we delete more than | |
8188 | one breakpoint. */ | |
c906108c | 8189 | |
80f8a6eb | 8190 | found = NULL; |
c906108c SS |
8191 | for (i = 0; i < sals.nelts; i++) |
8192 | { | |
8193 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8194 | If line given (pc == 0), clear all bpts on specified line. |
8195 | If defaulting, clear all bpts on default line | |
c906108c | 8196 | or at default pc. |
c5aa993b JM |
8197 | |
8198 | defaulting sal.pc != 0 tests to do | |
8199 | ||
8200 | 0 1 pc | |
8201 | 1 1 pc _and_ line | |
8202 | 0 0 line | |
8203 | 1 0 <can't happen> */ | |
c906108c SS |
8204 | |
8205 | sal = sals.sals[i]; | |
c906108c | 8206 | |
d6e956e5 VP |
8207 | /* Find all matching breakpoints and add them to |
8208 | 'found'. */ | |
8209 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8210 | { |
0d381245 | 8211 | int match = 0; |
80f8a6eb MS |
8212 | /* Are we going to delete b? */ |
8213 | if (b->type != bp_none | |
8214 | && b->type != bp_watchpoint | |
8215 | && b->type != bp_hardware_watchpoint | |
8216 | && b->type != bp_read_watchpoint | |
0d381245 VP |
8217 | && b->type != bp_access_watchpoint) |
8218 | { | |
8219 | struct bp_location *loc = b->loc; | |
8220 | for (; loc; loc = loc->next) | |
8221 | { | |
6c95b8df PA |
8222 | int pc_match = sal.pc |
8223 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8224 | && (loc->address == sal.pc) |
8225 | && (!section_is_overlay (loc->section) | |
8226 | || loc->section == sal.section); | |
8227 | int line_match = ((default_match || (0 == sal.pc)) | |
8228 | && b->source_file != NULL | |
8229 | && sal.symtab != NULL | |
6c95b8df | 8230 | && sal.pspace == loc->pspace |
0d381245 VP |
8231 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8232 | && b->line_number == sal.line); | |
8233 | if (pc_match || line_match) | |
8234 | { | |
8235 | match = 1; | |
8236 | break; | |
8237 | } | |
8238 | } | |
8239 | } | |
8240 | ||
8241 | if (match) | |
d6e956e5 | 8242 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8243 | } |
80f8a6eb MS |
8244 | } |
8245 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8246 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8247 | { |
8248 | if (arg) | |
8a3fe4f8 | 8249 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8250 | else |
8a3fe4f8 | 8251 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8252 | } |
c906108c | 8253 | |
d6e956e5 | 8254 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8255 | from_tty = 1; /* Always report if deleted more than one */ |
8256 | if (from_tty) | |
a3f17187 | 8257 | { |
d6e956e5 | 8258 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8259 | printf_unfiltered (_("Deleted breakpoint ")); |
8260 | else | |
8261 | printf_unfiltered (_("Deleted breakpoints ")); | |
8262 | } | |
80f8a6eb | 8263 | breakpoints_changed (); |
d6e956e5 VP |
8264 | |
8265 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8266 | { |
c5aa993b | 8267 | if (from_tty) |
d6e956e5 VP |
8268 | printf_unfiltered ("%d ", b->number); |
8269 | delete_breakpoint (b); | |
c906108c | 8270 | } |
80f8a6eb MS |
8271 | if (from_tty) |
8272 | putchar_unfiltered ('\n'); | |
c906108c SS |
8273 | } |
8274 | \f | |
8275 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8276 | all breakpoints that are marked for deletion, whether hit or not. | |
8277 | This is called after any breakpoint is hit, or after errors. */ | |
8278 | ||
8279 | void | |
fba45db2 | 8280 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8281 | { |
8282 | struct breakpoint *b, *temp; | |
8283 | ||
8284 | for (; bs; bs = bs->next) | |
20874c92 VP |
8285 | if (bs->breakpoint_at |
8286 | && bs->breakpoint_at->owner | |
8287 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 8288 | && bs->stop) |
4f8d1dc6 | 8289 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
8290 | |
8291 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8292 | { |
b5de0fa7 | 8293 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
8294 | delete_breakpoint (b); |
8295 | } | |
c906108c SS |
8296 | } |
8297 | ||
494cfb0f | 8298 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
8299 | Sort elements primarily by their ADDRESS (no matter what does |
8300 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
8301 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
8302 | is sorted stable way despite qsort being an instable algorithm. */ | |
8303 | ||
8304 | static int | |
494cfb0f | 8305 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 8306 | { |
494cfb0f JK |
8307 | struct bp_location *a = *(void **) ap; |
8308 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
8309 | int a_perm = a->owner->enable_state == bp_permanent; |
8310 | int b_perm = b->owner->enable_state == bp_permanent; | |
8311 | ||
8312 | if (a->address != b->address) | |
8313 | return (a->address > b->address) - (a->address < b->address); | |
8314 | ||
8315 | /* Sort permanent breakpoints first. */ | |
8316 | if (a_perm != b_perm) | |
8317 | return (a_perm < b_perm) - (a_perm > b_perm); | |
8318 | ||
8319 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
8320 | breakpoint can be sorted in arbitrary order. */ | |
8321 | ||
8322 | if (a->owner->number != b->owner->number) | |
8323 | return (a->owner->number > b->owner->number) | |
8324 | - (a->owner->number < b->owner->number); | |
8325 | ||
8326 | return (a > b) - (a < b); | |
8327 | } | |
8328 | ||
876fa593 JK |
8329 | /* Set bp_location_placed_address_before_address_max and |
8330 | bp_location_shadow_len_after_address_max according to the current content of | |
8331 | the bp_location array. */ | |
f7545552 TT |
8332 | |
8333 | static void | |
876fa593 | 8334 | bp_location_target_extensions_update (void) |
f7545552 | 8335 | { |
876fa593 JK |
8336 | struct bp_location *bl, **blp_tmp; |
8337 | ||
8338 | bp_location_placed_address_before_address_max = 0; | |
8339 | bp_location_shadow_len_after_address_max = 0; | |
8340 | ||
8341 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
8342 | { | |
8343 | CORE_ADDR start, end, addr; | |
8344 | ||
8345 | if (!bp_location_has_shadow (bl)) | |
8346 | continue; | |
8347 | ||
8348 | start = bl->target_info.placed_address; | |
8349 | end = start + bl->target_info.shadow_len; | |
8350 | ||
8351 | gdb_assert (bl->address >= start); | |
8352 | addr = bl->address - start; | |
8353 | if (addr > bp_location_placed_address_before_address_max) | |
8354 | bp_location_placed_address_before_address_max = addr; | |
8355 | ||
8356 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
8357 | ||
8358 | gdb_assert (bl->address < end); | |
8359 | addr = end - bl->address; | |
8360 | if (addr > bp_location_shadow_len_after_address_max) | |
8361 | bp_location_shadow_len_after_address_max = addr; | |
8362 | } | |
f7545552 TT |
8363 | } |
8364 | ||
4cd9bd08 | 8365 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
8366 | into the inferior, only remove already-inserted locations that no |
8367 | longer should be inserted. Functions that delete a breakpoint or | |
8368 | breakpoints should pass false, so that deleting a breakpoint | |
8369 | doesn't have the side effect of inserting the locations of other | |
8370 | breakpoints that are marked not-inserted, but should_be_inserted | |
8371 | returns true on them. | |
8372 | ||
8373 | This behaviour is useful is situations close to tear-down -- e.g., | |
8374 | after an exec, while the target still has execution, but breakpoint | |
8375 | shadows of the previous executable image should *NOT* be restored | |
8376 | to the new image; or before detaching, where the target still has | |
8377 | execution and wants to delete breakpoints from GDB's lists, and all | |
8378 | breakpoints had already been removed from the inferior. */ | |
8379 | ||
0d381245 | 8380 | static void |
b60e7edf | 8381 | update_global_location_list (int should_insert) |
0d381245 | 8382 | { |
74960c60 | 8383 | struct breakpoint *b; |
876fa593 | 8384 | struct bp_location **locp, *loc; |
f7545552 TT |
8385 | struct cleanup *cleanups; |
8386 | ||
2d134ed3 PA |
8387 | /* Used in the duplicates detection below. When iterating over all |
8388 | bp_locations, points to the first bp_location of a given address. | |
8389 | Breakpoints and watchpoints of different types are never | |
8390 | duplicates of each other. Keep one pointer for each type of | |
8391 | breakpoint/watchpoint, so we only need to loop over all locations | |
8392 | once. */ | |
8393 | struct bp_location *bp_loc_first; /* breakpoint */ | |
8394 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
8395 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
8396 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
8397 | |
8398 | /* Saved former bp_location array which we compare against the newly built | |
8399 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
8400 | struct bp_location **old_location, **old_locp; | |
8401 | unsigned old_location_count; | |
8402 | ||
8403 | old_location = bp_location; | |
8404 | old_location_count = bp_location_count; | |
8405 | bp_location = NULL; | |
8406 | bp_location_count = 0; | |
8407 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 8408 | |
74960c60 | 8409 | ALL_BREAKPOINTS (b) |
876fa593 JK |
8410 | for (loc = b->loc; loc; loc = loc->next) |
8411 | bp_location_count++; | |
8412 | ||
8413 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
8414 | locp = bp_location; | |
8415 | ALL_BREAKPOINTS (b) | |
8416 | for (loc = b->loc; loc; loc = loc->next) | |
8417 | *locp++ = loc; | |
8418 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 8419 | bp_location_compare); |
876fa593 JK |
8420 | |
8421 | bp_location_target_extensions_update (); | |
74960c60 VP |
8422 | |
8423 | /* Identify bp_location instances that are no longer present in the new | |
8424 | list, and therefore should be freed. Note that it's not necessary that | |
8425 | those locations should be removed from inferior -- if there's another | |
8426 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
8427 | we don't need to remove/insert the location. |
8428 | ||
8429 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
8430 | former bp_location array state respectively. */ | |
8431 | ||
8432 | locp = bp_location; | |
8433 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
8434 | old_locp++) | |
74960c60 | 8435 | { |
876fa593 | 8436 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 8437 | struct bp_location **loc2p; |
876fa593 JK |
8438 | |
8439 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 8440 | have to free it. */ |
c7d46a38 | 8441 | int found_object = 0; |
20874c92 VP |
8442 | /* Tells if the location should remain inserted in the target. */ |
8443 | int keep_in_target = 0; | |
8444 | int removed = 0; | |
876fa593 JK |
8445 | |
8446 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
8447 | at or being the one matching OLD_LOC. */ | |
8448 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 8449 | && (*locp)->address < old_loc->address) |
876fa593 | 8450 | locp++; |
c7d46a38 PA |
8451 | |
8452 | for (loc2p = locp; | |
8453 | (loc2p < bp_location + bp_location_count | |
8454 | && (*loc2p)->address == old_loc->address); | |
8455 | loc2p++) | |
8456 | { | |
8457 | if (*loc2p == old_loc) | |
8458 | { | |
8459 | found_object = 1; | |
8460 | break; | |
8461 | } | |
8462 | } | |
74960c60 VP |
8463 | |
8464 | /* If this location is no longer present, and inserted, look if there's | |
8465 | maybe a new location at the same address. If so, mark that one | |
8466 | inserted, and don't remove this one. This is needed so that we | |
8467 | don't have a time window where a breakpoint at certain location is not | |
8468 | inserted. */ | |
8469 | ||
876fa593 | 8470 | if (old_loc->inserted) |
0d381245 | 8471 | { |
74960c60 | 8472 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 8473 | |
876fa593 | 8474 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
8475 | { |
8476 | /* The location is still present in the location list, and still | |
8477 | should be inserted. Don't do anything. */ | |
20874c92 | 8478 | keep_in_target = 1; |
74960c60 VP |
8479 | } |
8480 | else | |
8481 | { | |
8482 | /* The location is either no longer present, or got disabled. | |
8483 | See if there's another location at the same address, in which | |
8484 | case we don't need to remove this one from the target. */ | |
876fa593 JK |
8485 | |
8486 | if (breakpoint_address_is_meaningful (old_loc->owner)) | |
8487 | { | |
876fa593 | 8488 | for (loc2p = locp; |
c7d46a38 PA |
8489 | (loc2p < bp_location + bp_location_count |
8490 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
8491 | loc2p++) |
8492 | { | |
8493 | struct bp_location *loc2 = *loc2p; | |
8494 | ||
2d134ed3 | 8495 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
8496 | { |
8497 | /* For the sake of should_be_inserted. | |
8498 | Duplicates check below will fix up this later. */ | |
8499 | loc2->duplicate = 0; | |
8500 | if (loc2 != old_loc && should_be_inserted (loc2)) | |
8501 | { | |
8502 | loc2->inserted = 1; | |
8503 | loc2->target_info = old_loc->target_info; | |
8504 | keep_in_target = 1; | |
8505 | break; | |
8506 | } | |
876fa593 JK |
8507 | } |
8508 | } | |
8509 | } | |
74960c60 VP |
8510 | } |
8511 | ||
20874c92 VP |
8512 | if (!keep_in_target) |
8513 | { | |
876fa593 | 8514 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
8515 | { |
8516 | /* This is just about all we can do. We could keep this | |
8517 | location on the global list, and try to remove it next | |
8518 | time, but there's no particular reason why we will | |
8519 | succeed next time. | |
8520 | ||
876fa593 | 8521 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
8522 | as delete_breakpoint frees the breakpoint only |
8523 | after calling us. */ | |
8524 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 8525 | old_loc->owner->number); |
20874c92 VP |
8526 | } |
8527 | removed = 1; | |
8528 | } | |
0d381245 | 8529 | } |
74960c60 VP |
8530 | |
8531 | if (!found_object) | |
1c5cfe86 | 8532 | { |
db82e815 PA |
8533 | if (removed && non_stop |
8534 | && breakpoint_address_is_meaningful (old_loc->owner) | |
8535 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 8536 | { |
db82e815 PA |
8537 | /* This location was removed from the target. In |
8538 | non-stop mode, a race condition is possible where | |
8539 | we've removed a breakpoint, but stop events for that | |
8540 | breakpoint are already queued and will arrive later. | |
8541 | We apply an heuristic to be able to distinguish such | |
8542 | SIGTRAPs from other random SIGTRAPs: we keep this | |
8543 | breakpoint location for a bit, and will retire it | |
8544 | after we see some number of events. The theory here | |
8545 | is that reporting of events should, "on the average", | |
8546 | be fair, so after a while we'll see events from all | |
8547 | threads that have anything of interest, and no longer | |
8548 | need to keep this breakpoint location around. We | |
8549 | don't hold locations forever so to reduce chances of | |
8550 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
8551 | SIGTRAP. | |
8552 | ||
8553 | The heuristic failing can be disastrous on | |
8554 | decr_pc_after_break targets. | |
8555 | ||
8556 | On decr_pc_after_break targets, like e.g., x86-linux, | |
8557 | if we fail to recognize a late breakpoint SIGTRAP, | |
8558 | because events_till_retirement has reached 0 too | |
8559 | soon, we'll fail to do the PC adjustment, and report | |
8560 | a random SIGTRAP to the user. When the user resumes | |
8561 | the inferior, it will most likely immediately crash | |
8562 | with SIGILL/SIGBUS/SEGSEGV, or worse, get silently | |
8563 | corrupted, because of being resumed e.g., in the | |
8564 | middle of a multi-byte instruction, or skipped a | |
8565 | one-byte instruction. This was actually seen happen | |
8566 | on native x86-linux, and should be less rare on | |
8567 | targets that do not support new thread events, like | |
8568 | remote, due to the heuristic depending on | |
8569 | thread_count. | |
8570 | ||
8571 | Mistaking a random SIGTRAP for a breakpoint trap | |
8572 | causes similar symptoms (PC adjustment applied when | |
8573 | it shouldn't), but then again, playing with SIGTRAPs | |
8574 | behind the debugger's back is asking for trouble. | |
8575 | ||
8576 | Since hardware watchpoint traps are always | |
8577 | distinguishable from other traps, so we don't need to | |
8578 | apply keep hardware watchpoint moribund locations | |
8579 | around. We simply always ignore hardware watchpoint | |
8580 | traps we can no longer explain. */ | |
8581 | ||
876fa593 JK |
8582 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
8583 | old_loc->owner = NULL; | |
20874c92 | 8584 | |
876fa593 | 8585 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
8586 | } |
8587 | else | |
876fa593 | 8588 | free_bp_location (old_loc); |
20874c92 | 8589 | } |
74960c60 | 8590 | } |
1c5cfe86 | 8591 | |
2d134ed3 PA |
8592 | /* Rescan breakpoints at the same address and section, marking the |
8593 | first one as "first" and any others as "duplicates". This is so | |
8594 | that the bpt instruction is only inserted once. If we have a | |
8595 | permanent breakpoint at the same place as BPT, make that one the | |
8596 | official one, and the rest as duplicates. Permanent breakpoints | |
8597 | are sorted first for the same address. | |
8598 | ||
8599 | Do the same for hardware watchpoints, but also considering the | |
8600 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 8601 | |
2d134ed3 PA |
8602 | bp_loc_first = NULL; |
8603 | wp_loc_first = NULL; | |
8604 | awp_loc_first = NULL; | |
8605 | rwp_loc_first = NULL; | |
876fa593 | 8606 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 8607 | { |
876fa593 | 8608 | struct breakpoint *b = loc->owner; |
2d134ed3 | 8609 | struct bp_location **loc_first_p; |
876fa593 JK |
8610 | |
8611 | if (b->enable_state == bp_disabled | |
8612 | || b->enable_state == bp_call_disabled | |
8613 | || b->enable_state == bp_startup_disabled | |
8614 | || !loc->enabled | |
8615 | || loc->shlib_disabled | |
8616 | || !breakpoint_address_is_meaningful (b)) | |
8617 | continue; | |
8618 | ||
8619 | /* Permanent breakpoint should always be inserted. */ | |
8620 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
8621 | internal_error (__FILE__, __LINE__, | |
8622 | _("allegedly permanent breakpoint is not " | |
8623 | "actually inserted")); | |
8624 | ||
2d134ed3 PA |
8625 | if (b->type == bp_hardware_watchpoint) |
8626 | loc_first_p = &wp_loc_first; | |
8627 | else if (b->type == bp_read_watchpoint) | |
8628 | loc_first_p = &rwp_loc_first; | |
8629 | else if (b->type == bp_access_watchpoint) | |
8630 | loc_first_p = &awp_loc_first; | |
8631 | else | |
8632 | loc_first_p = &bp_loc_first; | |
8633 | ||
8634 | if (*loc_first_p == NULL | |
8635 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
8636 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 8637 | { |
2d134ed3 | 8638 | *loc_first_p = loc; |
876fa593 JK |
8639 | loc->duplicate = 0; |
8640 | continue; | |
8641 | } | |
8642 | ||
8643 | loc->duplicate = 1; | |
8644 | ||
2d134ed3 PA |
8645 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
8646 | && b->enable_state != bp_permanent) | |
876fa593 JK |
8647 | internal_error (__FILE__, __LINE__, |
8648 | _("another breakpoint was inserted on top of " | |
8649 | "a permanent breakpoint")); | |
0d381245 | 8650 | } |
74960c60 | 8651 | |
50c71eaf | 8652 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 8653 | && (have_live_inferiors () |
2567c7d9 | 8654 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 8655 | insert_breakpoint_locations (); |
f7545552 TT |
8656 | |
8657 | do_cleanups (cleanups); | |
74960c60 VP |
8658 | } |
8659 | ||
20874c92 VP |
8660 | void |
8661 | breakpoint_retire_moribund (void) | |
8662 | { | |
8663 | struct bp_location *loc; | |
8664 | int ix; | |
8665 | ||
8666 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
8667 | if (--(loc->events_till_retirement) == 0) | |
8668 | { | |
8669 | free_bp_location (loc); | |
8670 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
8671 | --ix; | |
8672 | } | |
8673 | } | |
8674 | ||
74960c60 | 8675 | static void |
b60e7edf | 8676 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
8677 | { |
8678 | struct gdb_exception e; | |
8679 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 8680 | update_global_location_list (inserting); |
0d381245 VP |
8681 | } |
8682 | ||
a474d7c2 PA |
8683 | /* Clear BPT from a BPS. */ |
8684 | static void | |
8685 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
8686 | { | |
8687 | bpstat bs; | |
8688 | for (bs = bps; bs; bs = bs->next) | |
8689 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
8690 | { | |
8691 | bs->breakpoint_at = NULL; | |
8692 | bs->old_val = NULL; | |
8693 | /* bs->commands will be freed later. */ | |
8694 | } | |
8695 | } | |
8696 | ||
8697 | /* Callback for iterate_over_threads. */ | |
8698 | static int | |
8699 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
8700 | { | |
8701 | struct breakpoint *bpt = data; | |
8702 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
8703 | return 0; | |
8704 | } | |
8705 | ||
53a5351d JM |
8706 | /* Delete a breakpoint and clean up all traces of it in the data |
8707 | structures. */ | |
c906108c SS |
8708 | |
8709 | void | |
fba45db2 | 8710 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8711 | { |
52f0bd74 | 8712 | struct breakpoint *b; |
74960c60 | 8713 | struct bp_location *loc, *next; |
c906108c | 8714 | |
8a3fe4f8 | 8715 | gdb_assert (bpt != NULL); |
c906108c SS |
8716 | |
8717 | /* Has this bp already been deleted? This can happen because multiple | |
8718 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
8719 | ||
8720 | One example of this happening is a watchpoint's scope bp. When the | |
8721 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
8722 | delete it. We also delete its scope bp. But the scope bp is marked | |
8723 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
8724 | checked for auto-deleting bp's, which are deleted. | |
8725 | ||
8726 | A real solution to this problem might involve reference counts in bp's, | |
8727 | and/or giving them pointers back to their referencing bpstat's, and | |
8728 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 8729 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
8730 | if (bpt->type == bp_none) |
8731 | return; | |
8732 | ||
383f836e | 8733 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 8734 | |
c906108c SS |
8735 | if (breakpoint_chain == bpt) |
8736 | breakpoint_chain = bpt->next; | |
8737 | ||
c906108c SS |
8738 | ALL_BREAKPOINTS (b) |
8739 | if (b->next == bpt) | |
c5aa993b JM |
8740 | { |
8741 | b->next = bpt->next; | |
8742 | break; | |
8743 | } | |
c906108c | 8744 | |
c906108c | 8745 | free_command_lines (&bpt->commands); |
c906108c | 8746 | if (bpt->cond_string != NULL) |
b8c9b27d | 8747 | xfree (bpt->cond_string); |
c906108c | 8748 | if (bpt->addr_string != NULL) |
b8c9b27d | 8749 | xfree (bpt->addr_string); |
c906108c | 8750 | if (bpt->exp != NULL) |
b8c9b27d | 8751 | xfree (bpt->exp); |
c906108c | 8752 | if (bpt->exp_string != NULL) |
b8c9b27d | 8753 | xfree (bpt->exp_string); |
c906108c SS |
8754 | if (bpt->val != NULL) |
8755 | value_free (bpt->val); | |
8756 | if (bpt->source_file != NULL) | |
b8c9b27d | 8757 | xfree (bpt->source_file); |
c906108c | 8758 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 8759 | xfree (bpt->exec_pathname); |
a96d9b2e | 8760 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c SS |
8761 | |
8762 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
8763 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
8764 | We just check stop_bpstat for now. Note that we cannot just |
8765 | remove bpstats pointing at bpt from the stop_bpstat list | |
8766 | entirely, as breakpoint commands are associated with the bpstat; | |
8767 | if we remove it here, then the later call to | |
8768 | bpstat_do_actions (&stop_bpstat); | |
8769 | in event-top.c won't do anything, and temporary breakpoints | |
8770 | with commands won't work. */ | |
a474d7c2 | 8771 | |
a474d7c2 | 8772 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
8773 | |
8774 | /* Now that breakpoint is removed from breakpoint | |
8775 | list, update the global location list. This | |
8776 | will remove locations that used to belong to | |
8777 | this breakpoint. Do this before freeing | |
8778 | the breakpoint itself, since remove_breakpoint | |
8779 | looks at location's owner. It might be better | |
8780 | design to have location completely self-contained, | |
8781 | but it's not the case now. */ | |
b60e7edf | 8782 | update_global_location_list (0); |
74960c60 VP |
8783 | |
8784 | ||
c906108c SS |
8785 | /* On the chance that someone will soon try again to delete this same |
8786 | bp, we mark it as deleted before freeing its storage. */ | |
8787 | bpt->type = bp_none; | |
8788 | ||
b8c9b27d | 8789 | xfree (bpt); |
c906108c SS |
8790 | } |
8791 | ||
4d6140d9 AC |
8792 | static void |
8793 | do_delete_breakpoint_cleanup (void *b) | |
8794 | { | |
8795 | delete_breakpoint (b); | |
8796 | } | |
8797 | ||
8798 | struct cleanup * | |
8799 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
8800 | { | |
8801 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
8802 | } | |
8803 | ||
c906108c | 8804 | void |
fba45db2 | 8805 | delete_command (char *arg, int from_tty) |
c906108c SS |
8806 | { |
8807 | struct breakpoint *b, *temp; | |
8808 | ||
ea9365bb TT |
8809 | dont_repeat (); |
8810 | ||
c906108c SS |
8811 | if (arg == 0) |
8812 | { | |
8813 | int breaks_to_delete = 0; | |
8814 | ||
8815 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
8816 | Do not delete internal or call-dummy breakpoints, these |
8817 | have to be deleted with an explicit breakpoint number argument. */ | |
8818 | ALL_BREAKPOINTS (b) | |
8819 | { | |
059fb39f PM |
8820 | if (b->type != bp_call_dummy |
8821 | && b->type != bp_shlib_event | |
4efc6507 | 8822 | && b->type != bp_jit_event |
059fb39f PM |
8823 | && b->type != bp_thread_event |
8824 | && b->type != bp_overlay_event | |
0fd8e87f | 8825 | && b->type != bp_longjmp_master |
059fb39f | 8826 | && b->number >= 0) |
973d738b DJ |
8827 | { |
8828 | breaks_to_delete = 1; | |
8829 | break; | |
8830 | } | |
c5aa993b | 8831 | } |
c906108c SS |
8832 | |
8833 | /* Ask user only if there are some breakpoints to delete. */ | |
8834 | if (!from_tty | |
e2e0b3e5 | 8835 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 8836 | { |
c5aa993b JM |
8837 | ALL_BREAKPOINTS_SAFE (b, temp) |
8838 | { | |
059fb39f PM |
8839 | if (b->type != bp_call_dummy |
8840 | && b->type != bp_shlib_event | |
8841 | && b->type != bp_thread_event | |
4efc6507 | 8842 | && b->type != bp_jit_event |
059fb39f | 8843 | && b->type != bp_overlay_event |
0fd8e87f | 8844 | && b->type != bp_longjmp_master |
059fb39f | 8845 | && b->number >= 0) |
c5aa993b JM |
8846 | delete_breakpoint (b); |
8847 | } | |
c906108c SS |
8848 | } |
8849 | } | |
8850 | else | |
8851 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8852 | } | |
8853 | ||
0d381245 VP |
8854 | static int |
8855 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 8856 | { |
0d381245 VP |
8857 | for (; loc; loc = loc->next) |
8858 | if (!loc->shlib_disabled) | |
8859 | return 0; | |
8860 | return 1; | |
fe3f5fa8 VP |
8861 | } |
8862 | ||
776592bf DE |
8863 | /* Subroutine of update_breakpoint_locations to simplify it. |
8864 | Return non-zero if multiple fns in list LOC have the same name. | |
8865 | Null names are ignored. */ | |
8866 | ||
8867 | static int | |
8868 | ambiguous_names_p (struct bp_location *loc) | |
8869 | { | |
8870 | struct bp_location *l; | |
8871 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
8872 | (int (*) (const void *, const void *)) streq, | |
8873 | NULL, xcalloc, xfree); | |
8874 | ||
8875 | for (l = loc; l != NULL; l = l->next) | |
8876 | { | |
8877 | const char **slot; | |
8878 | const char *name = l->function_name; | |
8879 | ||
8880 | /* Allow for some names to be NULL, ignore them. */ | |
8881 | if (name == NULL) | |
8882 | continue; | |
8883 | ||
8884 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
8885 | INSERT); | |
8886 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
8887 | NULL. */ | |
8888 | if (*slot != NULL) | |
8889 | { | |
8890 | htab_delete (htab); | |
8891 | return 1; | |
8892 | } | |
8893 | *slot = name; | |
8894 | } | |
8895 | ||
8896 | htab_delete (htab); | |
8897 | return 0; | |
8898 | } | |
8899 | ||
fe3f5fa8 | 8900 | static void |
0d381245 VP |
8901 | update_breakpoint_locations (struct breakpoint *b, |
8902 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
8903 | { |
8904 | int i; | |
8905 | char *s; | |
0d381245 VP |
8906 | struct bp_location *existing_locations = b->loc; |
8907 | ||
8908 | /* If there's no new locations, and all existing locations | |
8909 | are pending, don't do anything. This optimizes | |
8910 | the common case where all locations are in the same | |
8911 | shared library, that was unloaded. We'd like to | |
8912 | retain the location, so that when the library | |
8913 | is loaded again, we don't loose the enabled/disabled | |
8914 | status of the individual locations. */ | |
8915 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
8916 | return; |
8917 | ||
fe3f5fa8 VP |
8918 | b->loc = NULL; |
8919 | ||
0d381245 | 8920 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 8921 | { |
0d381245 | 8922 | struct bp_location *new_loc = |
39d61571 | 8923 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 8924 | |
0d381245 VP |
8925 | /* Reparse conditions, they might contain references to the |
8926 | old symtab. */ | |
8927 | if (b->cond_string != NULL) | |
8928 | { | |
8929 | struct gdb_exception e; | |
fe3f5fa8 | 8930 | |
0d381245 VP |
8931 | s = b->cond_string; |
8932 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
8933 | { | |
8934 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
8935 | 0); | |
8936 | } | |
8937 | if (e.reason < 0) | |
8938 | { | |
8939 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
8940 | b->number, e.message); | |
8941 | new_loc->enabled = 0; | |
8942 | } | |
8943 | } | |
fe3f5fa8 | 8944 | |
0d381245 VP |
8945 | if (b->source_file != NULL) |
8946 | xfree (b->source_file); | |
8947 | if (sals.sals[i].symtab == NULL) | |
8948 | b->source_file = NULL; | |
8949 | else | |
1b36a34b | 8950 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 8951 | |
0d381245 VP |
8952 | if (b->line_number == 0) |
8953 | b->line_number = sals.sals[i].line; | |
8954 | } | |
fe3f5fa8 | 8955 | |
514f746b AR |
8956 | /* Update locations of permanent breakpoints. */ |
8957 | if (b->enable_state == bp_permanent) | |
8958 | make_breakpoint_permanent (b); | |
8959 | ||
0d381245 VP |
8960 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
8961 | { | |
8962 | struct bp_location *e = existing_locations; | |
776592bf DE |
8963 | /* If there are multiple breakpoints with the same function name, |
8964 | e.g. for inline functions, comparing function names won't work. | |
8965 | Instead compare pc addresses; this is just a heuristic as things | |
8966 | may have moved, but in practice it gives the correct answer | |
8967 | often enough until a better solution is found. */ | |
8968 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
8969 | ||
0d381245 VP |
8970 | for (; e; e = e->next) |
8971 | { | |
8972 | if (!e->enabled && e->function_name) | |
8973 | { | |
8974 | struct bp_location *l = b->loc; | |
776592bf DE |
8975 | if (have_ambiguous_names) |
8976 | { | |
8977 | for (; l; l = l->next) | |
6c95b8df PA |
8978 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
8979 | l->pspace->aspace, l->address)) | |
776592bf DE |
8980 | { |
8981 | l->enabled = 0; | |
8982 | break; | |
8983 | } | |
8984 | } | |
8985 | else | |
8986 | { | |
8987 | for (; l; l = l->next) | |
8988 | if (l->function_name | |
8989 | && strcmp (e->function_name, l->function_name) == 0) | |
8990 | { | |
8991 | l->enabled = 0; | |
8992 | break; | |
8993 | } | |
8994 | } | |
0d381245 VP |
8995 | } |
8996 | } | |
8997 | } | |
fe3f5fa8 | 8998 | |
b60e7edf | 8999 | update_global_location_list (1); |
fe3f5fa8 VP |
9000 | } |
9001 | ||
9002 | ||
c906108c SS |
9003 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9004 | The value we return ends up being the return value from catch_errors. | |
9005 | Unused in this case. */ | |
9006 | ||
9007 | static int | |
4efb68b1 | 9008 | breakpoint_re_set_one (void *bint) |
c906108c | 9009 | { |
53a5351d JM |
9010 | /* get past catch_errs */ |
9011 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
9012 | struct value *mark; |
9013 | int i; | |
fe3f5fa8 VP |
9014 | int not_found = 0; |
9015 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9016 | struct symtabs_and_lines sals = {0}; |
9017 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9018 | char *s; |
b5de0fa7 | 9019 | enum enable_state save_enable; |
fe3f5fa8 | 9020 | struct gdb_exception e; |
6c95b8df | 9021 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9022 | |
9023 | switch (b->type) | |
9024 | { | |
9025 | case bp_none: | |
8a3fe4f8 | 9026 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9027 | b->number); |
c906108c SS |
9028 | return 0; |
9029 | case bp_breakpoint: | |
9030 | case bp_hardware_breakpoint: | |
1042e4c0 | 9031 | case bp_tracepoint: |
7a697b8d | 9032 | case bp_fast_tracepoint: |
8bea4e01 UW |
9033 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9034 | if (b->enable_state == bp_startup_disabled) | |
9035 | return 0; | |
9036 | ||
c906108c SS |
9037 | if (b->addr_string == NULL) |
9038 | { | |
9039 | /* Anything without a string can't be re-set. */ | |
9040 | delete_breakpoint (b); | |
9041 | return 0; | |
9042 | } | |
c906108c SS |
9043 | |
9044 | set_language (b->language); | |
9045 | input_radix = b->input_radix; | |
9046 | s = b->addr_string; | |
6c95b8df PA |
9047 | |
9048 | save_current_space_and_thread (); | |
9049 | switch_to_program_space_and_thread (b->pspace); | |
9050 | ||
fe3f5fa8 | 9051 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9052 | { |
fe3f5fa8 VP |
9053 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9054 | not_found_ptr); | |
9055 | } | |
9056 | if (e.reason < 0) | |
9057 | { | |
9058 | int not_found_and_ok = 0; | |
9059 | /* For pending breakpoints, it's expected that parsing | |
9060 | will fail until the right shared library is loaded. | |
9061 | User has already told to create pending breakpoints and | |
9062 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9063 | state, then user already saw the message about that breakpoint | |
9064 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9065 | if (not_found |
9066 | && (b->condition_not_parsed | |
9067 | || (b->loc && b->loc->shlib_disabled) | |
9068 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9069 | not_found_and_ok = 1; |
9070 | ||
9071 | if (!not_found_and_ok) | |
c906108c | 9072 | { |
fe3f5fa8 VP |
9073 | /* We surely don't want to warn about the same breakpoint |
9074 | 10 times. One solution, implemented here, is disable | |
9075 | the breakpoint on error. Another solution would be to | |
9076 | have separate 'warning emitted' flag. Since this | |
9077 | happens only when a binary has changed, I don't know | |
9078 | which approach is better. */ | |
9079 | b->enable_state = bp_disabled; | |
9080 | throw_exception (e); | |
c906108c | 9081 | } |
fe3f5fa8 | 9082 | } |
c906108c | 9083 | |
6c95b8df | 9084 | if (!not_found) |
fe3f5fa8 | 9085 | { |
6c95b8df PA |
9086 | gdb_assert (sals.nelts == 1); |
9087 | ||
9088 | resolve_sal_pc (&sals.sals[0]); | |
9089 | if (b->condition_not_parsed && s && s[0]) | |
9090 | { | |
9091 | char *cond_string = 0; | |
9092 | int thread = -1; | |
9093 | int task = 0; | |
9094 | ||
9095 | find_condition_and_thread (s, sals.sals[0].pc, | |
9096 | &cond_string, &thread, &task); | |
9097 | if (cond_string) | |
9098 | b->cond_string = cond_string; | |
9099 | b->thread = thread; | |
9100 | b->task = task; | |
9101 | b->condition_not_parsed = 0; | |
9102 | } | |
9103 | ||
9104 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9105 | } |
6c95b8df PA |
9106 | |
9107 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9108 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9109 | break; |
9110 | ||
9111 | case bp_watchpoint: | |
9112 | case bp_hardware_watchpoint: | |
9113 | case bp_read_watchpoint: | |
9114 | case bp_access_watchpoint: | |
0b3de036 VP |
9115 | /* Watchpoint can be either on expression using entirely global variables, |
9116 | or it can be on local variables. | |
9117 | ||
9118 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9119 | across program restarts. Since they can use variables from shared | |
9120 | libraries, we need to reparse expression as libraries are loaded | |
9121 | and unloaded. | |
9122 | ||
9123 | Watchpoints on local variables can also change meaning as result | |
9124 | of solib event. For example, if a watchpoint uses both a local and | |
9125 | a global variables in expression, it's a local watchpoint, but | |
9126 | unloading of a shared library will make the expression invalid. | |
9127 | This is not a very common use case, but we still re-evaluate | |
9128 | expression, to avoid surprises to the user. | |
9129 | ||
9130 | Note that for local watchpoints, we re-evaluate it only if | |
9131 | watchpoints frame id is still valid. If it's not, it means | |
9132 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9133 | I'm not sure we'll ever be called in this case. | |
9134 | ||
9135 | If a local watchpoint's frame id is still valid, then | |
9136 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9137 | ||
9138 | Don't do anything about disabled watchpoints, since they will | |
9139 | be reevaluated again when enabled. */ | |
a5606eee | 9140 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9141 | break; |
c5aa993b JM |
9142 | /* We needn't really do anything to reset these, since the mask |
9143 | that requests them is unaffected by e.g., new libraries being | |
9144 | loaded. */ | |
ce78b96d | 9145 | case bp_catchpoint: |
c906108c | 9146 | break; |
c5aa993b | 9147 | |
c906108c | 9148 | default: |
a3f17187 | 9149 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9150 | /* fall through */ |
0fd8e87f UW |
9151 | /* Delete overlay event and longjmp master breakpoints; they will be |
9152 | reset later by breakpoint_re_set. */ | |
1900040c | 9153 | case bp_overlay_event: |
0fd8e87f | 9154 | case bp_longjmp_master: |
c906108c SS |
9155 | delete_breakpoint (b); |
9156 | break; | |
9157 | ||
c5aa993b JM |
9158 | /* This breakpoint is special, it's set up when the inferior |
9159 | starts and we really don't want to touch it. */ | |
c906108c SS |
9160 | case bp_shlib_event: |
9161 | ||
c4093a6a JM |
9162 | /* Like bp_shlib_event, this breakpoint type is special. |
9163 | Once it is set up, we do not want to touch it. */ | |
9164 | case bp_thread_event: | |
9165 | ||
c5aa993b JM |
9166 | /* Keep temporary breakpoints, which can be encountered when we step |
9167 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9168 | Otherwise these should have been blown away via the cleanup chain | |
9169 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9170 | case bp_until: |
9171 | case bp_finish: | |
9172 | case bp_watchpoint_scope: | |
9173 | case bp_call_dummy: | |
9174 | case bp_step_resume: | |
611c83ae PA |
9175 | case bp_longjmp: |
9176 | case bp_longjmp_resume: | |
4efc6507 | 9177 | case bp_jit_event: |
c906108c SS |
9178 | break; |
9179 | } | |
9180 | ||
6c95b8df | 9181 | do_cleanups (cleanups); |
c906108c SS |
9182 | return 0; |
9183 | } | |
9184 | ||
69de3c6a | 9185 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9186 | void |
69de3c6a | 9187 | breakpoint_re_set (void) |
c906108c SS |
9188 | { |
9189 | struct breakpoint *b, *temp; | |
9190 | enum language save_language; | |
9191 | int save_input_radix; | |
6c95b8df | 9192 | struct cleanup *old_chain; |
c5aa993b | 9193 | |
c906108c SS |
9194 | save_language = current_language->la_language; |
9195 | save_input_radix = input_radix; | |
6c95b8df PA |
9196 | old_chain = save_current_program_space (); |
9197 | ||
c906108c | 9198 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9199 | { |
53a5351d | 9200 | /* Format possible error msg */ |
fe3f5fa8 | 9201 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9202 | b->number); |
9203 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9204 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9205 | do_cleanups (cleanups); |
c5aa993b | 9206 | } |
c906108c SS |
9207 | set_language (save_language); |
9208 | input_radix = save_input_radix; | |
e62c965a | 9209 | |
0756c555 | 9210 | jit_breakpoint_re_set (); |
4efc6507 | 9211 | |
6c95b8df PA |
9212 | do_cleanups (old_chain); |
9213 | ||
69de3c6a | 9214 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9215 | create_longjmp_master_breakpoint ("longjmp"); |
9216 | create_longjmp_master_breakpoint ("_longjmp"); | |
9217 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9218 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
9219 | } |
9220 | \f | |
c906108c SS |
9221 | /* Reset the thread number of this breakpoint: |
9222 | ||
9223 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9224 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9225 | void |
fba45db2 | 9226 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9227 | { |
9228 | if (b->thread != -1) | |
9229 | { | |
39f77062 KB |
9230 | if (in_thread_list (inferior_ptid)) |
9231 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9232 | |
9233 | /* We're being called after following a fork. The new fork is | |
9234 | selected as current, and unless this was a vfork will have a | |
9235 | different program space from the original thread. Reset that | |
9236 | as well. */ | |
9237 | b->loc->pspace = current_program_space; | |
c906108c SS |
9238 | } |
9239 | } | |
9240 | ||
03ac34d5 MS |
9241 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9242 | If from_tty is nonzero, it prints a message to that effect, | |
9243 | which ends with a period (no newline). */ | |
9244 | ||
c906108c | 9245 | void |
fba45db2 | 9246 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9247 | { |
52f0bd74 | 9248 | struct breakpoint *b; |
c906108c SS |
9249 | |
9250 | if (count < 0) | |
9251 | count = 0; | |
9252 | ||
9253 | ALL_BREAKPOINTS (b) | |
9254 | if (b->number == bptnum) | |
c5aa993b JM |
9255 | { |
9256 | b->ignore_count = count; | |
221ea385 KS |
9257 | if (from_tty) |
9258 | { | |
9259 | if (count == 0) | |
a3f17187 | 9260 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
9261 | bptnum); |
9262 | else if (count == 1) | |
a3f17187 | 9263 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
9264 | bptnum); |
9265 | else | |
a3f17187 | 9266 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
9267 | count, bptnum); |
9268 | } | |
c5aa993b | 9269 | breakpoints_changed (); |
383f836e | 9270 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
9271 | return; |
9272 | } | |
c906108c | 9273 | |
8a3fe4f8 | 9274 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
9275 | } |
9276 | ||
b2175913 MS |
9277 | void |
9278 | make_breakpoint_silent (struct breakpoint *b) | |
9279 | { | |
9280 | /* Silence the breakpoint. */ | |
9281 | b->silent = 1; | |
9282 | } | |
9283 | ||
c906108c SS |
9284 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
9285 | ||
9286 | static void | |
fba45db2 | 9287 | ignore_command (char *args, int from_tty) |
c906108c SS |
9288 | { |
9289 | char *p = args; | |
52f0bd74 | 9290 | int num; |
c906108c SS |
9291 | |
9292 | if (p == 0) | |
e2e0b3e5 | 9293 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 9294 | |
c906108c | 9295 | num = get_number (&p); |
5c44784c | 9296 | if (num == 0) |
8a3fe4f8 | 9297 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 9298 | if (*p == 0) |
8a3fe4f8 | 9299 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
9300 | |
9301 | set_ignore_count (num, | |
9302 | longest_to_int (value_as_long (parse_and_eval (p))), | |
9303 | from_tty); | |
221ea385 KS |
9304 | if (from_tty) |
9305 | printf_filtered ("\n"); | |
c906108c SS |
9306 | } |
9307 | \f | |
9308 | /* Call FUNCTION on each of the breakpoints | |
9309 | whose numbers are given in ARGS. */ | |
9310 | ||
9311 | static void | |
831662b3 | 9312 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 9313 | { |
52f0bd74 | 9314 | char *p = args; |
c906108c | 9315 | char *p1; |
52f0bd74 AC |
9316 | int num; |
9317 | struct breakpoint *b, *tmp; | |
11cf8741 | 9318 | int match; |
c906108c SS |
9319 | |
9320 | if (p == 0) | |
e2e0b3e5 | 9321 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
9322 | |
9323 | while (*p) | |
9324 | { | |
11cf8741 | 9325 | match = 0; |
c906108c | 9326 | p1 = p; |
c5aa993b | 9327 | |
5c44784c JM |
9328 | num = get_number_or_range (&p1); |
9329 | if (num == 0) | |
c5aa993b | 9330 | { |
8a3fe4f8 | 9331 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
9332 | } |
9333 | else | |
9334 | { | |
9335 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
9336 | if (b->number == num) | |
9337 | { | |
9338 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 9339 | match = 1; |
5c44784c JM |
9340 | function (b); |
9341 | if (related_breakpoint) | |
9342 | function (related_breakpoint); | |
11cf8741 | 9343 | break; |
5c44784c | 9344 | } |
11cf8741 | 9345 | if (match == 0) |
a3f17187 | 9346 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 9347 | } |
c906108c SS |
9348 | p = p1; |
9349 | } | |
9350 | } | |
9351 | ||
0d381245 VP |
9352 | static struct bp_location * |
9353 | find_location_by_number (char *number) | |
9354 | { | |
9355 | char *dot = strchr (number, '.'); | |
9356 | char *p1; | |
9357 | int bp_num; | |
9358 | int loc_num; | |
9359 | struct breakpoint *b; | |
9360 | struct bp_location *loc; | |
9361 | ||
9362 | *dot = '\0'; | |
9363 | ||
9364 | p1 = number; | |
9365 | bp_num = get_number_or_range (&p1); | |
9366 | if (bp_num == 0) | |
9367 | error (_("Bad breakpoint number '%s'"), number); | |
9368 | ||
9369 | ALL_BREAKPOINTS (b) | |
9370 | if (b->number == bp_num) | |
9371 | { | |
9372 | break; | |
9373 | } | |
9374 | ||
9375 | if (!b || b->number != bp_num) | |
9376 | error (_("Bad breakpoint number '%s'"), number); | |
9377 | ||
9378 | p1 = dot+1; | |
9379 | loc_num = get_number_or_range (&p1); | |
9380 | if (loc_num == 0) | |
9381 | error (_("Bad breakpoint location number '%s'"), number); | |
9382 | ||
9383 | --loc_num; | |
9384 | loc = b->loc; | |
9385 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
9386 | ; | |
9387 | if (!loc) | |
9388 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
9389 | ||
9390 | return loc; | |
9391 | } | |
9392 | ||
9393 | ||
1900040c MS |
9394 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9395 | If from_tty is nonzero, it prints a message to that effect, | |
9396 | which ends with a period (no newline). */ | |
9397 | ||
c906108c | 9398 | void |
fba45db2 | 9399 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9400 | { |
9401 | /* Never disable a watchpoint scope breakpoint; we want to | |
9402 | hit them when we leave scope so we can delete both the | |
9403 | watchpoint and its scope breakpoint at that time. */ | |
9404 | if (bpt->type == bp_watchpoint_scope) | |
9405 | return; | |
9406 | ||
c2c6d25f | 9407 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 9408 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
9409 | return; |
9410 | ||
b5de0fa7 | 9411 | bpt->enable_state = bp_disabled; |
c906108c | 9412 | |
b60e7edf | 9413 | update_global_location_list (0); |
c906108c | 9414 | |
383f836e | 9415 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9416 | } |
9417 | ||
c906108c | 9418 | static void |
fba45db2 | 9419 | disable_command (char *args, int from_tty) |
c906108c | 9420 | { |
52f0bd74 | 9421 | struct breakpoint *bpt; |
c906108c SS |
9422 | if (args == 0) |
9423 | ALL_BREAKPOINTS (bpt) | |
9424 | switch (bpt->type) | |
c5aa993b JM |
9425 | { |
9426 | case bp_none: | |
8a3fe4f8 | 9427 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 9428 | bpt->number); |
c5aa993b JM |
9429 | continue; |
9430 | case bp_breakpoint: | |
1042e4c0 | 9431 | case bp_tracepoint: |
7a697b8d | 9432 | case bp_fast_tracepoint: |
ce78b96d | 9433 | case bp_catchpoint: |
c5aa993b JM |
9434 | case bp_hardware_breakpoint: |
9435 | case bp_watchpoint: | |
9436 | case bp_hardware_watchpoint: | |
9437 | case bp_read_watchpoint: | |
9438 | case bp_access_watchpoint: | |
9439 | disable_breakpoint (bpt); | |
9440 | default: | |
9441 | continue; | |
9442 | } | |
0d381245 VP |
9443 | else if (strchr (args, '.')) |
9444 | { | |
9445 | struct bp_location *loc = find_location_by_number (args); | |
9446 | if (loc) | |
9447 | loc->enabled = 0; | |
b60e7edf | 9448 | update_global_location_list (0); |
0d381245 | 9449 | } |
c906108c SS |
9450 | else |
9451 | map_breakpoint_numbers (args, disable_breakpoint); | |
9452 | } | |
9453 | ||
9454 | static void | |
fba45db2 | 9455 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 9456 | { |
c906108c SS |
9457 | int target_resources_ok, other_type_used; |
9458 | struct value *mark; | |
9459 | ||
9460 | if (bpt->type == bp_hardware_breakpoint) | |
9461 | { | |
9462 | int i; | |
c5aa993b | 9463 | i = hw_breakpoint_used_count (); |
53a5351d | 9464 | target_resources_ok = |
d92524f1 | 9465 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 9466 | i + 1, 0); |
c906108c | 9467 | if (target_resources_ok == 0) |
8a3fe4f8 | 9468 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 9469 | else if (target_resources_ok < 0) |
8a3fe4f8 | 9470 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
9471 | } |
9472 | ||
059fb39f PM |
9473 | if (bpt->type == bp_watchpoint |
9474 | || bpt->type == bp_hardware_watchpoint | |
9475 | || bpt->type == bp_read_watchpoint | |
9476 | || bpt->type == bp_access_watchpoint) | |
c906108c | 9477 | { |
dde02812 ES |
9478 | struct gdb_exception e; |
9479 | ||
9480 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 9481 | { |
dde02812 | 9482 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 9483 | } |
dde02812 | 9484 | if (e.reason < 0) |
c5aa993b | 9485 | { |
dde02812 ES |
9486 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
9487 | bpt->number); | |
9488 | return; | |
c5aa993b | 9489 | } |
c906108c | 9490 | } |
0101ce28 | 9491 | |
b4c291bb KH |
9492 | if (bpt->enable_state != bp_permanent) |
9493 | bpt->enable_state = bp_enabled; | |
9494 | bpt->disposition = disposition; | |
b60e7edf | 9495 | update_global_location_list (1); |
b4c291bb KH |
9496 | breakpoints_changed (); |
9497 | ||
383f836e | 9498 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9499 | } |
9500 | ||
fe3f5fa8 | 9501 | |
c906108c | 9502 | void |
fba45db2 | 9503 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9504 | { |
9505 | do_enable_breakpoint (bpt, bpt->disposition); | |
9506 | } | |
9507 | ||
9508 | /* The enable command enables the specified breakpoints (or all defined | |
9509 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 9510 | in stopping the inferior. */ |
c906108c | 9511 | |
c906108c | 9512 | static void |
fba45db2 | 9513 | enable_command (char *args, int from_tty) |
c906108c | 9514 | { |
52f0bd74 | 9515 | struct breakpoint *bpt; |
c906108c SS |
9516 | if (args == 0) |
9517 | ALL_BREAKPOINTS (bpt) | |
9518 | switch (bpt->type) | |
c5aa993b JM |
9519 | { |
9520 | case bp_none: | |
8a3fe4f8 | 9521 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 9522 | bpt->number); |
c5aa993b JM |
9523 | continue; |
9524 | case bp_breakpoint: | |
1042e4c0 | 9525 | case bp_tracepoint: |
7a697b8d | 9526 | case bp_fast_tracepoint: |
ce78b96d | 9527 | case bp_catchpoint: |
c5aa993b JM |
9528 | case bp_hardware_breakpoint: |
9529 | case bp_watchpoint: | |
9530 | case bp_hardware_watchpoint: | |
9531 | case bp_read_watchpoint: | |
9532 | case bp_access_watchpoint: | |
9533 | enable_breakpoint (bpt); | |
9534 | default: | |
9535 | continue; | |
9536 | } | |
0d381245 VP |
9537 | else if (strchr (args, '.')) |
9538 | { | |
9539 | struct bp_location *loc = find_location_by_number (args); | |
9540 | if (loc) | |
9541 | loc->enabled = 1; | |
b60e7edf | 9542 | update_global_location_list (1); |
0d381245 | 9543 | } |
c906108c SS |
9544 | else |
9545 | map_breakpoint_numbers (args, enable_breakpoint); | |
9546 | } | |
9547 | ||
9548 | static void | |
fba45db2 | 9549 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 9550 | { |
b5de0fa7 | 9551 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
9552 | } |
9553 | ||
c906108c | 9554 | static void |
fba45db2 | 9555 | enable_once_command (char *args, int from_tty) |
c906108c SS |
9556 | { |
9557 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
9558 | } | |
9559 | ||
9560 | static void | |
fba45db2 | 9561 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9562 | { |
b5de0fa7 | 9563 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
9564 | } |
9565 | ||
c906108c | 9566 | static void |
fba45db2 | 9567 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
9568 | { |
9569 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
9570 | } | |
9571 | \f | |
fa8d40ab JJ |
9572 | static void |
9573 | set_breakpoint_cmd (char *args, int from_tty) | |
9574 | { | |
9575 | } | |
9576 | ||
9577 | static void | |
9578 | show_breakpoint_cmd (char *args, int from_tty) | |
9579 | { | |
9580 | } | |
9581 | ||
1f3b5d1b PP |
9582 | /* Invalidate last known value of any hardware watchpoint if |
9583 | the memory which that value represents has been written to by | |
9584 | GDB itself. */ | |
9585 | ||
9586 | static void | |
9587 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
9588 | const bfd_byte *data) | |
9589 | { | |
9590 | struct breakpoint *bp; | |
9591 | ||
9592 | ALL_BREAKPOINTS (bp) | |
9593 | if (bp->enable_state == bp_enabled | |
9594 | && bp->type == bp_hardware_watchpoint | |
9595 | && bp->val_valid && bp->val) | |
9596 | { | |
9597 | struct bp_location *loc; | |
9598 | ||
9599 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
9600 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
9601 | && loc->address + loc->length > addr | |
9602 | && addr + len > loc->address) | |
9603 | { | |
9604 | value_free (bp->val); | |
9605 | bp->val = NULL; | |
9606 | bp->val_valid = 0; | |
9607 | } | |
9608 | } | |
9609 | } | |
9610 | ||
c906108c SS |
9611 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
9612 | ||
9613 | struct symtabs_and_lines | |
fba45db2 | 9614 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
9615 | { |
9616 | struct symtabs_and_lines sals; | |
9617 | if (string == 0) | |
8a3fe4f8 | 9618 | error (_("Empty line specification.")); |
c906108c SS |
9619 | if (default_breakpoint_valid) |
9620 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
9621 | default_breakpoint_symtab, |
9622 | default_breakpoint_line, | |
68219205 | 9623 | (char ***) NULL, NULL); |
c906108c SS |
9624 | else |
9625 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 9626 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 9627 | if (*string) |
8a3fe4f8 | 9628 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
9629 | return sals; |
9630 | } | |
8181d85f DJ |
9631 | |
9632 | /* Create and insert a raw software breakpoint at PC. Return an | |
9633 | identifier, which should be used to remove the breakpoint later. | |
9634 | In general, places which call this should be using something on the | |
9635 | breakpoint chain instead; this function should be eliminated | |
9636 | someday. */ | |
9637 | ||
9638 | void * | |
6c95b8df PA |
9639 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
9640 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
9641 | { |
9642 | struct bp_target_info *bp_tgt; | |
9643 | ||
6c95b8df | 9644 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 9645 | |
6c95b8df | 9646 | bp_tgt->placed_address_space = aspace; |
8181d85f | 9647 | bp_tgt->placed_address = pc; |
6c95b8df | 9648 | |
a6d9a66e | 9649 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
9650 | { |
9651 | /* Could not insert the breakpoint. */ | |
9652 | xfree (bp_tgt); | |
9653 | return NULL; | |
9654 | } | |
9655 | ||
9656 | return bp_tgt; | |
9657 | } | |
9658 | ||
9659 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
9660 | ||
9661 | int | |
a6d9a66e | 9662 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
9663 | { |
9664 | struct bp_target_info *bp_tgt = bp; | |
9665 | int ret; | |
9666 | ||
a6d9a66e | 9667 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
9668 | xfree (bp_tgt); |
9669 | ||
9670 | return ret; | |
9671 | } | |
9672 | ||
9673 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
9674 | ||
9675 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 9676 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
9677 | |
9678 | /* Create and insert a breakpoint for software single step. */ | |
9679 | ||
9680 | void | |
6c95b8df PA |
9681 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
9682 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
9683 | { |
9684 | void **bpt_p; | |
9685 | ||
9686 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
9687 | { |
9688 | bpt_p = &single_step_breakpoints[0]; | |
9689 | single_step_gdbarch[0] = gdbarch; | |
9690 | } | |
8181d85f DJ |
9691 | else |
9692 | { | |
9693 | gdb_assert (single_step_breakpoints[1] == NULL); | |
9694 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 9695 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
9696 | } |
9697 | ||
9698 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
9699 | to only create the breakpoints once, and actually put them on the | |
9700 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
9701 | adjust the addresses each time they were needed. Doing this requires | |
9702 | corresponding changes elsewhere where single step breakpoints are | |
9703 | handled, however. So, for now, we use this. */ | |
9704 | ||
6c95b8df | 9705 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 9706 | if (*bpt_p == NULL) |
5af949e3 UW |
9707 | error (_("Could not insert single-step breakpoint at %s"), |
9708 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
9709 | } |
9710 | ||
9711 | /* Remove and delete any breakpoints used for software single step. */ | |
9712 | ||
9713 | void | |
9714 | remove_single_step_breakpoints (void) | |
9715 | { | |
9716 | gdb_assert (single_step_breakpoints[0] != NULL); | |
9717 | ||
9718 | /* See insert_single_step_breakpoint for more about this deprecated | |
9719 | call. */ | |
a6d9a66e UW |
9720 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
9721 | single_step_breakpoints[0]); | |
9722 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
9723 | single_step_breakpoints[0] = NULL; |
9724 | ||
9725 | if (single_step_breakpoints[1] != NULL) | |
9726 | { | |
a6d9a66e UW |
9727 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
9728 | single_step_breakpoints[1]); | |
9729 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
9730 | single_step_breakpoints[1] = NULL; |
9731 | } | |
9732 | } | |
9733 | ||
1aafd4da UW |
9734 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
9735 | ||
9736 | static int | |
6c95b8df | 9737 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
1aafd4da UW |
9738 | { |
9739 | int i; | |
9740 | ||
9741 | for (i = 0; i < 2; i++) | |
9742 | { | |
9743 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
9744 | if (bp_tgt |
9745 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
9746 | bp_tgt->placed_address, | |
9747 | aspace, pc)) | |
1aafd4da UW |
9748 | return 1; |
9749 | } | |
9750 | ||
9751 | return 0; | |
9752 | } | |
9753 | ||
a96d9b2e SDJ |
9754 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
9755 | non-zero otherwise. */ | |
9756 | static int | |
9757 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
9758 | { | |
9759 | if (syscall_catchpoint_p (bp) | |
9760 | && bp->enable_state != bp_disabled | |
9761 | && bp->enable_state != bp_call_disabled) | |
9762 | return 1; | |
9763 | else | |
9764 | return 0; | |
9765 | } | |
9766 | ||
9767 | int | |
9768 | catch_syscall_enabled (void) | |
9769 | { | |
9770 | struct inferior *inf = current_inferior (); | |
9771 | ||
9772 | return inf->total_syscalls_count != 0; | |
9773 | } | |
9774 | ||
9775 | int | |
9776 | catching_syscall_number (int syscall_number) | |
9777 | { | |
9778 | struct breakpoint *bp; | |
9779 | ||
9780 | ALL_BREAKPOINTS (bp) | |
9781 | if (is_syscall_catchpoint_enabled (bp)) | |
9782 | { | |
9783 | if (bp->syscalls_to_be_caught) | |
9784 | { | |
9785 | int i, iter; | |
9786 | for (i = 0; | |
9787 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
9788 | i++) | |
9789 | if (syscall_number == iter) | |
9790 | return 1; | |
9791 | } | |
9792 | else | |
9793 | return 1; | |
9794 | } | |
9795 | ||
9796 | return 0; | |
9797 | } | |
9798 | ||
9799 | /* Complete syscall names. Used by "catch syscall". */ | |
9800 | static char ** | |
9801 | catch_syscall_completer (struct cmd_list_element *cmd, | |
9802 | char *text, char *word) | |
9803 | { | |
9804 | const char **list = get_syscall_names (); | |
9805 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
9806 | } | |
9807 | ||
1042e4c0 SS |
9808 | /* Tracepoint-specific operations. */ |
9809 | ||
9810 | /* Set tracepoint count to NUM. */ | |
9811 | static void | |
9812 | set_tracepoint_count (int num) | |
9813 | { | |
9814 | tracepoint_count = num; | |
4fa62494 | 9815 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
9816 | } |
9817 | ||
9818 | void | |
9819 | trace_command (char *arg, int from_tty) | |
9820 | { | |
a6d9a66e UW |
9821 | break_command_really (get_current_arch (), |
9822 | arg, | |
1042e4c0 SS |
9823 | NULL, 0, 1 /* parse arg */, |
9824 | 0 /* tempflag */, 0 /* hardwareflag */, | |
9825 | 1 /* traceflag */, | |
9826 | 0 /* Ignore count */, | |
9827 | pending_break_support, | |
9828 | NULL, | |
9829 | from_tty, | |
9830 | 1 /* enabled */); | |
9831 | set_tracepoint_count (breakpoint_count); | |
9832 | } | |
9833 | ||
7a697b8d SS |
9834 | void |
9835 | ftrace_command (char *arg, int from_tty) | |
9836 | { | |
9837 | break_command_really (get_current_arch (), | |
9838 | arg, | |
9839 | NULL, 0, 1 /* parse arg */, | |
9840 | 0 /* tempflag */, 1 /* hardwareflag */, | |
9841 | 1 /* traceflag */, | |
9842 | 0 /* Ignore count */, | |
9843 | pending_break_support, | |
9844 | NULL, | |
9845 | from_tty, | |
9846 | 1 /* enabled */); | |
9847 | set_tracepoint_count (breakpoint_count); | |
9848 | } | |
9849 | ||
00bf0b85 SS |
9850 | /* Given information about a tracepoint as recorded on a target (which |
9851 | can be either a live system or a trace file), attempt to create an | |
9852 | equivalent GDB tracepoint. This is not a reliable process, since | |
9853 | the target does not necessarily have all the information used when | |
9854 | the tracepoint was originally defined. */ | |
9855 | ||
9856 | struct breakpoint * | |
9857 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 SS |
9858 | { |
9859 | char buf[100]; | |
9860 | struct breakpoint *tp; | |
00bf0b85 SS |
9861 | |
9862 | /* In the absence of a source location, fall back to raw address. */ | |
9863 | sprintf (buf, "*%s", paddress (get_current_arch(), utp->addr)); | |
d5551862 | 9864 | |
00bf0b85 SS |
9865 | break_command_really (get_current_arch (), |
9866 | buf, | |
9867 | NULL, 0, 1 /* parse arg */, | |
9868 | 0 /* tempflag */, | |
9869 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
9870 | 1 /* traceflag */, | |
9871 | 0 /* Ignore count */, | |
9872 | pending_break_support, | |
9873 | NULL, | |
9874 | 0 /* from_tty */, | |
9875 | utp->enabled /* enabled */); | |
9876 | set_tracepoint_count (breakpoint_count); | |
9877 | ||
9878 | tp = get_tracepoint (tracepoint_count); | |
d5551862 | 9879 | |
00bf0b85 SS |
9880 | if (utp->pass > 0) |
9881 | { | |
9882 | sprintf (buf, "%d %d", utp->pass, tp->number); | |
9883 | ||
9884 | trace_pass_command (buf, 0); | |
9885 | } | |
9886 | ||
9887 | if (utp->cond) | |
9888 | { | |
9889 | printf_filtered ("Want to restore a condition\n"); | |
9890 | } | |
9891 | ||
9892 | if (utp->numactions > 0) | |
9893 | { | |
9894 | printf_filtered ("Want to restore action list\n"); | |
9895 | } | |
d5551862 | 9896 | |
00bf0b85 SS |
9897 | if (utp->num_step_actions > 0) |
9898 | { | |
9899 | printf_filtered ("Want to restore action list\n"); | |
9900 | } | |
9901 | ||
9902 | return tp; | |
9903 | } | |
9904 | ||
1042e4c0 SS |
9905 | /* Print information on tracepoint number TPNUM_EXP, or all if |
9906 | omitted. */ | |
9907 | ||
9908 | static void | |
9909 | tracepoints_info (char *tpnum_exp, int from_tty) | |
9910 | { | |
9911 | struct breakpoint *b; | |
9912 | int tps_to_list = 0; | |
9913 | ||
9914 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
9915 | if (tpnum_exp == 0) | |
9916 | { | |
9917 | ALL_TRACEPOINTS (b) | |
9918 | { | |
9919 | if (b->number >= 0) | |
9920 | { | |
9921 | tps_to_list = 1; | |
9922 | break; | |
9923 | } | |
9924 | } | |
9925 | if (!tps_to_list) | |
9926 | { | |
9927 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
9928 | return; | |
9929 | } | |
9930 | } | |
9931 | ||
9932 | /* Otherwise be the same as "info break". */ | |
9933 | breakpoints_info (tpnum_exp, from_tty); | |
9934 | } | |
9935 | ||
9936 | /* The 'enable trace' command enables tracepoints. | |
9937 | Not supported by all targets. */ | |
9938 | static void | |
9939 | enable_trace_command (char *args, int from_tty) | |
9940 | { | |
9941 | enable_command (args, from_tty); | |
9942 | } | |
9943 | ||
9944 | /* The 'disable trace' command disables tracepoints. | |
9945 | Not supported by all targets. */ | |
9946 | static void | |
9947 | disable_trace_command (char *args, int from_tty) | |
9948 | { | |
9949 | disable_command (args, from_tty); | |
9950 | } | |
9951 | ||
9952 | /* Remove a tracepoint (or all if no argument) */ | |
9953 | static void | |
9954 | delete_trace_command (char *arg, int from_tty) | |
9955 | { | |
9956 | struct breakpoint *b, *temp; | |
9957 | ||
9958 | dont_repeat (); | |
9959 | ||
9960 | if (arg == 0) | |
9961 | { | |
9962 | int breaks_to_delete = 0; | |
9963 | ||
9964 | /* Delete all breakpoints if no argument. | |
9965 | Do not delete internal or call-dummy breakpoints, these | |
9966 | have to be deleted with an explicit breakpoint number argument. */ | |
9967 | ALL_TRACEPOINTS (b) | |
9968 | { | |
9969 | if (b->number >= 0) | |
9970 | { | |
9971 | breaks_to_delete = 1; | |
9972 | break; | |
9973 | } | |
9974 | } | |
9975 | ||
9976 | /* Ask user only if there are some breakpoints to delete. */ | |
9977 | if (!from_tty | |
9978 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
9979 | { | |
9980 | ALL_BREAKPOINTS_SAFE (b, temp) | |
9981 | { | |
7a697b8d | 9982 | if (tracepoint_type (b) |
059fb39f | 9983 | && b->number >= 0) |
1042e4c0 SS |
9984 | delete_breakpoint (b); |
9985 | } | |
9986 | } | |
9987 | } | |
9988 | else | |
9989 | map_breakpoint_numbers (arg, delete_breakpoint); | |
9990 | } | |
9991 | ||
9992 | /* Set passcount for tracepoint. | |
9993 | ||
9994 | First command argument is passcount, second is tracepoint number. | |
9995 | If tracepoint number omitted, apply to most recently defined. | |
9996 | Also accepts special argument "all". */ | |
9997 | ||
9998 | static void | |
9999 | trace_pass_command (char *args, int from_tty) | |
10000 | { | |
10001 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10002 | unsigned int count; | |
10003 | int all = 0; | |
10004 | ||
10005 | if (args == 0 || *args == 0) | |
10006 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10007 | ||
10008 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10009 | ||
10010 | while (*args && isspace ((int) *args)) | |
10011 | args++; | |
10012 | ||
10013 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10014 | { | |
10015 | args += 3; /* Skip special argument "all". */ | |
10016 | all = 1; | |
10017 | if (*args) | |
10018 | error (_("Junk at end of arguments.")); | |
10019 | } | |
10020 | else | |
10021 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10022 | ||
10023 | do | |
10024 | { | |
10025 | if (t1) | |
10026 | { | |
10027 | ALL_TRACEPOINTS (t2) | |
10028 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10029 | { | |
10030 | t2->pass_count = count; | |
10031 | observer_notify_tracepoint_modified (t2->number); | |
10032 | if (from_tty) | |
10033 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10034 | t2->number, count); | |
10035 | } | |
10036 | if (! all && *args) | |
10037 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10038 | } | |
10039 | } | |
10040 | while (*args); | |
10041 | } | |
10042 | ||
10043 | struct breakpoint * | |
10044 | get_tracepoint (int num) | |
10045 | { | |
10046 | struct breakpoint *t; | |
10047 | ||
10048 | ALL_TRACEPOINTS (t) | |
10049 | if (t->number == num) | |
10050 | return t; | |
10051 | ||
10052 | return NULL; | |
10053 | } | |
10054 | ||
d5551862 SS |
10055 | /* Find the tracepoint with the given target-side number (which may be |
10056 | different from the tracepoint number after disconnecting and | |
10057 | reconnecting). */ | |
10058 | ||
10059 | struct breakpoint * | |
10060 | get_tracepoint_by_number_on_target (int num) | |
10061 | { | |
10062 | struct breakpoint *t; | |
10063 | ||
10064 | ALL_TRACEPOINTS (t) | |
10065 | if (t->number_on_target == num) | |
10066 | return t; | |
10067 | ||
10068 | return NULL; | |
10069 | } | |
10070 | ||
1042e4c0 SS |
10071 | /* Utility: parse a tracepoint number and look it up in the list. |
10072 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10073 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10074 | recent tracepoint (tracepoint_count) is returned. */ | |
10075 | struct breakpoint * | |
10076 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10077 | { | |
10078 | extern int tracepoint_count; | |
10079 | struct breakpoint *t; | |
10080 | int tpnum; | |
10081 | char *instring = arg == NULL ? NULL : *arg; | |
10082 | ||
10083 | if (arg == NULL || *arg == NULL || ! **arg) | |
10084 | { | |
10085 | if (optional_p) | |
10086 | tpnum = tracepoint_count; | |
10087 | else | |
10088 | error_no_arg (_("tracepoint number")); | |
10089 | } | |
10090 | else | |
10091 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10092 | ||
10093 | if (tpnum <= 0) | |
10094 | { | |
10095 | if (instring && *instring) | |
10096 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10097 | instring); | |
10098 | else | |
10099 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10100 | return NULL; | |
10101 | } | |
10102 | ||
10103 | ALL_TRACEPOINTS (t) | |
10104 | if (t->number == tpnum) | |
10105 | { | |
10106 | return t; | |
10107 | } | |
10108 | ||
10109 | /* FIXME: if we are in the middle of a range we don't want to give | |
10110 | a message. The current interface to get_number_or_range doesn't | |
10111 | allow us to discover this. */ | |
10112 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10113 | return NULL; | |
10114 | } | |
10115 | ||
10116 | /* save-tracepoints command */ | |
10117 | static void | |
10118 | tracepoint_save_command (char *args, int from_tty) | |
10119 | { | |
10120 | struct breakpoint *tp; | |
10121 | int any_tp = 0; | |
10122 | struct action_line *line; | |
10123 | FILE *fp; | |
10124 | char *i1 = " ", *i2 = " "; | |
10125 | char *indent, *actionline, *pathname; | |
10126 | char tmp[40]; | |
10127 | struct cleanup *cleanup; | |
10128 | ||
10129 | if (args == 0 || *args == 0) | |
10130 | error (_("Argument required (file name in which to save tracepoints)")); | |
10131 | ||
10132 | /* See if we have anything to save. */ | |
10133 | ALL_TRACEPOINTS (tp) | |
10134 | { | |
10135 | any_tp = 1; | |
10136 | break; | |
10137 | } | |
10138 | if (!any_tp) | |
10139 | { | |
10140 | warning (_("save-tracepoints: no tracepoints to save.")); | |
10141 | return; | |
10142 | } | |
10143 | ||
10144 | pathname = tilde_expand (args); | |
10145 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
10146 | fp = fopen (pathname, "w"); |
10147 | if (!fp) | |
1042e4c0 SS |
10148 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
10149 | args, safe_strerror (errno)); | |
10150 | make_cleanup_fclose (fp); | |
10151 | ||
10152 | ALL_TRACEPOINTS (tp) | |
10153 | { | |
10154 | if (tp->addr_string) | |
10155 | fprintf (fp, "trace %s\n", tp->addr_string); | |
10156 | else | |
10157 | { | |
10158 | sprintf_vma (tmp, tp->loc->address); | |
10159 | fprintf (fp, "trace *0x%s\n", tmp); | |
10160 | } | |
10161 | ||
10162 | if (tp->pass_count) | |
10163 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
10164 | ||
10165 | if (tp->actions) | |
10166 | { | |
10167 | fprintf (fp, " actions\n"); | |
10168 | indent = i1; | |
10169 | for (line = tp->actions; line; line = line->next) | |
10170 | { | |
10171 | struct cmd_list_element *cmd; | |
10172 | ||
10173 | QUIT; /* allow user to bail out with ^C */ | |
10174 | actionline = line->action; | |
10175 | while (isspace ((int) *actionline)) | |
10176 | actionline++; | |
10177 | ||
10178 | fprintf (fp, "%s%s\n", indent, actionline); | |
10179 | if (*actionline != '#') /* skip for comment lines */ | |
10180 | { | |
10181 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
10182 | if (cmd == 0) | |
10183 | error (_("Bad action list item: %s"), actionline); | |
10184 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
10185 | indent = i2; | |
10186 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
10187 | indent = i1; | |
10188 | } | |
10189 | } | |
10190 | } | |
10191 | } | |
10192 | do_cleanups (cleanup); | |
10193 | if (from_tty) | |
10194 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
10195 | return; | |
10196 | } | |
10197 | ||
10198 | /* Create a vector of all tracepoints. */ | |
10199 | ||
10200 | VEC(breakpoint_p) * | |
10201 | all_tracepoints () | |
10202 | { | |
10203 | VEC(breakpoint_p) *tp_vec = 0; | |
10204 | struct breakpoint *tp; | |
10205 | ||
10206 | ALL_TRACEPOINTS (tp) | |
10207 | { | |
10208 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
10209 | } | |
10210 | ||
10211 | return tp_vec; | |
10212 | } | |
10213 | ||
c906108c | 10214 | \f |
31e2b00f AS |
10215 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
10216 | It is defined as a macro to prevent duplication. | |
10217 | COMMAND should be a string constant containing the name of the command. */ | |
10218 | #define BREAK_ARGS_HELP(command) \ | |
10219 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
10220 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
10221 | If a line number is specified, break at start of code for that line.\n\ | |
10222 | If a function is specified, break at start of code for that function.\n\ | |
10223 | If an address is specified, break at that exact address.\n\ | |
10224 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
10225 | This is useful for breaking on return to a stack frame.\n\ | |
10226 | \n\ | |
10227 | THREADNUM is the number from \"info threads\".\n\ | |
10228 | CONDITION is a boolean expression.\n\ | |
10229 | \n\ | |
10230 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
10231 | \n\ | |
10232 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
10233 | ||
44feb3ce TT |
10234 | /* List of subcommands for "catch". */ |
10235 | static struct cmd_list_element *catch_cmdlist; | |
10236 | ||
10237 | /* List of subcommands for "tcatch". */ | |
10238 | static struct cmd_list_element *tcatch_cmdlist; | |
10239 | ||
10240 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
10241 | lists, and pass some additional user data to the command function. */ | |
10242 | static void | |
10243 | add_catch_command (char *name, char *docstring, | |
10244 | void (*sfunc) (char *args, int from_tty, | |
10245 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
10246 | char **(*completer) (struct cmd_list_element *cmd, |
10247 | char *text, char *word), | |
44feb3ce TT |
10248 | void *user_data_catch, |
10249 | void *user_data_tcatch) | |
10250 | { | |
10251 | struct cmd_list_element *command; | |
10252 | ||
10253 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10254 | &catch_cmdlist); | |
10255 | set_cmd_sfunc (command, sfunc); | |
10256 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 10257 | set_cmd_completer (command, completer); |
44feb3ce TT |
10258 | |
10259 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10260 | &tcatch_cmdlist); | |
10261 | set_cmd_sfunc (command, sfunc); | |
10262 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 10263 | set_cmd_completer (command, completer); |
44feb3ce TT |
10264 | } |
10265 | ||
6c95b8df PA |
10266 | static void |
10267 | clear_syscall_counts (int pid) | |
10268 | { | |
10269 | struct inferior *inf = find_inferior_pid (pid); | |
10270 | ||
10271 | inf->total_syscalls_count = 0; | |
10272 | inf->any_syscall_count = 0; | |
10273 | VEC_free (int, inf->syscalls_counts); | |
10274 | } | |
10275 | ||
c906108c | 10276 | void |
fba45db2 | 10277 | _initialize_breakpoint (void) |
c906108c | 10278 | { |
fa8d40ab JJ |
10279 | static struct cmd_list_element *breakpoint_set_cmdlist; |
10280 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
10281 | struct cmd_list_element *c; |
10282 | ||
84acb35a | 10283 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 10284 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 10285 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 10286 | |
c906108c SS |
10287 | breakpoint_chain = 0; |
10288 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
10289 | before a breakpoint is set. */ | |
10290 | breakpoint_count = 0; | |
10291 | ||
1042e4c0 SS |
10292 | tracepoint_count = 0; |
10293 | ||
1bedd215 AC |
10294 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
10295 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
10296 | Usage is `ignore N COUNT'.")); | |
c906108c | 10297 | if (xdb_commands) |
c5aa993b | 10298 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 10299 | |
1bedd215 AC |
10300 | add_com ("commands", class_breakpoint, commands_command, _("\ |
10301 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
10302 | Give breakpoint number as argument after \"commands\".\n\ |
10303 | With no argument, the targeted breakpoint is the last one set.\n\ | |
10304 | The commands themselves follow starting on the next line.\n\ | |
10305 | Type a line containing \"end\" to indicate the end of them.\n\ | |
10306 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 10307 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 10308 | |
1bedd215 AC |
10309 | add_com ("condition", class_breakpoint, condition_command, _("\ |
10310 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 10311 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 10312 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 10313 | |
1bedd215 | 10314 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 10315 | Set a temporary breakpoint.\n\ |
c906108c SS |
10316 | Like \"break\" except the breakpoint is only temporary,\n\ |
10317 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
10318 | by using \"enable delete\" on the breakpoint number.\n\ |
10319 | \n" | |
10320 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 10321 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10322 | |
1bedd215 | 10323 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 10324 | Set a hardware assisted breakpoint.\n\ |
c906108c | 10325 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
10326 | some target hardware may not have this support.\n\ |
10327 | \n" | |
10328 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 10329 | set_cmd_completer (c, location_completer); |
c906108c | 10330 | |
1bedd215 | 10331 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 10332 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 10333 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
10334 | so it will be deleted when hit.\n\ |
10335 | \n" | |
10336 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 10337 | set_cmd_completer (c, location_completer); |
c906108c | 10338 | |
1bedd215 AC |
10339 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
10340 | Enable some breakpoints.\n\ | |
c906108c SS |
10341 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10342 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10343 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10344 | With a subcommand you can enable temporarily."), |
c906108c SS |
10345 | &enablelist, "enable ", 1, &cmdlist); |
10346 | if (xdb_commands) | |
1bedd215 AC |
10347 | add_com ("ab", class_breakpoint, enable_command, _("\ |
10348 | Enable some breakpoints.\n\ | |
c906108c SS |
10349 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10350 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10351 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10352 | With a subcommand you can enable temporarily.")); |
c906108c SS |
10353 | |
10354 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
10355 | ||
1bedd215 AC |
10356 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
10357 | Enable some breakpoints.\n\ | |
c906108c SS |
10358 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10359 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10360 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 10361 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 10362 | |
1a966eab AC |
10363 | add_cmd ("once", no_class, enable_once_command, _("\ |
10364 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10365 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10366 | &enablebreaklist); |
10367 | ||
1a966eab AC |
10368 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10369 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10370 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10371 | &enablebreaklist); |
10372 | ||
1a966eab AC |
10373 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10374 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10375 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10376 | &enablelist); |
10377 | ||
1a966eab AC |
10378 | add_cmd ("once", no_class, enable_once_command, _("\ |
10379 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10380 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10381 | &enablelist); |
10382 | ||
1bedd215 AC |
10383 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
10384 | Disable some breakpoints.\n\ | |
c906108c SS |
10385 | Arguments are breakpoint numbers with spaces in between.\n\ |
10386 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10387 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
10388 | &disablelist, "disable ", 1, &cmdlist); |
10389 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
10390 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
10391 | if (xdb_commands) | |
1bedd215 AC |
10392 | add_com ("sb", class_breakpoint, disable_command, _("\ |
10393 | Disable some breakpoints.\n\ | |
c906108c SS |
10394 | Arguments are breakpoint numbers with spaces in between.\n\ |
10395 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10396 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 10397 | |
1a966eab AC |
10398 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
10399 | Disable some breakpoints.\n\ | |
c906108c SS |
10400 | Arguments are breakpoint numbers with spaces in between.\n\ |
10401 | To disable all breakpoints, give no argument.\n\ | |
10402 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 10403 | This command may be abbreviated \"disable\"."), |
c906108c SS |
10404 | &disablelist); |
10405 | ||
1bedd215 AC |
10406 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
10407 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10408 | Arguments are breakpoint numbers with spaces in between.\n\ |
10409 | To delete all breakpoints, give no argument.\n\ | |
10410 | \n\ | |
10411 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 10412 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
10413 | &deletelist, "delete ", 1, &cmdlist); |
10414 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 10415 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 10416 | if (xdb_commands) |
1bedd215 AC |
10417 | add_com ("db", class_breakpoint, delete_command, _("\ |
10418 | Delete some breakpoints.\n\ | |
c906108c | 10419 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 10420 | To delete all breakpoints, give no argument.\n")); |
c906108c | 10421 | |
1a966eab AC |
10422 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
10423 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10424 | Arguments are breakpoint numbers with spaces in between.\n\ |
10425 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 10426 | This command may be abbreviated \"delete\"."), |
c906108c SS |
10427 | &deletelist); |
10428 | ||
1bedd215 AC |
10429 | add_com ("clear", class_breakpoint, clear_command, _("\ |
10430 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
10431 | Argument may be line number, function name, or \"*\" and an address.\n\ |
10432 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
10433 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
10434 | If an address is specified, breakpoints at that address are cleared.\n\ |
10435 | \n\ | |
10436 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
10437 | is executing in.\n\ |
10438 | \n\ | |
1bedd215 | 10439 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 10440 | |
1bedd215 | 10441 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
10442 | Set breakpoint at specified line or function.\n" |
10443 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 10444 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10445 | |
c906108c SS |
10446 | add_com_alias ("b", "break", class_run, 1); |
10447 | add_com_alias ("br", "break", class_run, 1); | |
10448 | add_com_alias ("bre", "break", class_run, 1); | |
10449 | add_com_alias ("brea", "break", class_run, 1); | |
10450 | ||
7681d515 PM |
10451 | if (xdb_commands) |
10452 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
10453 | |
10454 | if (dbx_commands) | |
10455 | { | |
1bedd215 AC |
10456 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
10457 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
10458 | &stoplist, "stop ", 1, &cmdlist); |
10459 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 10460 | _("Break in function or address."), &stoplist); |
c5aa993b | 10461 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 10462 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
10463 | add_com ("status", class_info, breakpoints_info, _("\ |
10464 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10465 | The \"Type\" column indicates one of:\n\ |
10466 | \tbreakpoint - normal breakpoint\n\ | |
10467 | \twatchpoint - watchpoint\n\ | |
10468 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10469 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10470 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10471 | address and file/line number respectively.\n\ |
10472 | \n\ | |
10473 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10474 | are set to the address of the last breakpoint listed unless the command\n\ |
10475 | is prefixed with \"server \".\n\n\ | |
c906108c | 10476 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10477 | breakpoint set.")); |
c906108c SS |
10478 | } |
10479 | ||
1bedd215 AC |
10480 | add_info ("breakpoints", breakpoints_info, _("\ |
10481 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10482 | The \"Type\" column indicates one of:\n\ |
10483 | \tbreakpoint - normal breakpoint\n\ | |
10484 | \twatchpoint - watchpoint\n\ | |
10485 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10486 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10487 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10488 | address and file/line number respectively.\n\ |
10489 | \n\ | |
10490 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10491 | are set to the address of the last breakpoint listed unless the command\n\ |
10492 | is prefixed with \"server \".\n\n\ | |
c906108c | 10493 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10494 | breakpoint set.")); |
c906108c | 10495 | |
6b04bdb7 MS |
10496 | add_info_alias ("b", "breakpoints", 1); |
10497 | ||
c906108c | 10498 | if (xdb_commands) |
1bedd215 AC |
10499 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
10500 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10501 | The \"Type\" column indicates one of:\n\ |
10502 | \tbreakpoint - normal breakpoint\n\ | |
10503 | \twatchpoint - watchpoint\n\ | |
10504 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
10505 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
10506 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
10507 | address and file/line number respectively.\n\ |
10508 | \n\ | |
10509 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10510 | are set to the address of the last breakpoint listed unless the command\n\ |
10511 | is prefixed with \"server \".\n\n\ | |
c906108c | 10512 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 10513 | breakpoint set.")); |
c906108c | 10514 | |
1a966eab AC |
10515 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
10516 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10517 | The \"Type\" column indicates one of:\n\ |
10518 | \tbreakpoint - normal breakpoint\n\ | |
10519 | \twatchpoint - watchpoint\n\ | |
10520 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
10521 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
10522 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
10523 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
10524 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
10525 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
10526 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
10527 | address and file/line number respectively.\n\ |
10528 | \n\ | |
10529 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
10530 | are set to the address of the last breakpoint listed unless the command\n\ |
10531 | is prefixed with \"server \".\n\n\ | |
c906108c | 10532 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 10533 | breakpoint set."), |
c906108c SS |
10534 | &maintenanceinfolist); |
10535 | ||
44feb3ce TT |
10536 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
10537 | Set catchpoints to catch events."), | |
10538 | &catch_cmdlist, "catch ", | |
10539 | 0/*allow-unknown*/, &cmdlist); | |
10540 | ||
10541 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
10542 | Set temporary catchpoints to catch events."), | |
10543 | &tcatch_cmdlist, "tcatch ", | |
10544 | 0/*allow-unknown*/, &cmdlist); | |
10545 | ||
10546 | /* Add catch and tcatch sub-commands. */ | |
10547 | add_catch_command ("catch", _("\ | |
10548 | Catch an exception, when caught.\n\ | |
10549 | With an argument, catch only exceptions with the given name."), | |
10550 | catch_catch_command, | |
a96d9b2e | 10551 | NULL, |
44feb3ce TT |
10552 | CATCH_PERMANENT, |
10553 | CATCH_TEMPORARY); | |
10554 | add_catch_command ("throw", _("\ | |
10555 | Catch an exception, when thrown.\n\ | |
10556 | With an argument, catch only exceptions with the given name."), | |
10557 | catch_throw_command, | |
a96d9b2e | 10558 | NULL, |
44feb3ce TT |
10559 | CATCH_PERMANENT, |
10560 | CATCH_TEMPORARY); | |
10561 | add_catch_command ("fork", _("Catch calls to fork."), | |
10562 | catch_fork_command_1, | |
a96d9b2e | 10563 | NULL, |
44feb3ce TT |
10564 | (void *) (uintptr_t) catch_fork_permanent, |
10565 | (void *) (uintptr_t) catch_fork_temporary); | |
10566 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
10567 | catch_fork_command_1, | |
a96d9b2e | 10568 | NULL, |
44feb3ce TT |
10569 | (void *) (uintptr_t) catch_vfork_permanent, |
10570 | (void *) (uintptr_t) catch_vfork_temporary); | |
10571 | add_catch_command ("exec", _("Catch calls to exec."), | |
10572 | catch_exec_command_1, | |
a96d9b2e SDJ |
10573 | NULL, |
10574 | CATCH_PERMANENT, | |
10575 | CATCH_TEMPORARY); | |
10576 | add_catch_command ("syscall", _("\ | |
10577 | Catch system calls by their names and/or numbers.\n\ | |
10578 | Arguments say which system calls to catch. If no arguments\n\ | |
10579 | are given, every system call will be caught.\n\ | |
10580 | Arguments, if given, should be one or more system call names\n\ | |
10581 | (if your system supports that), or system call numbers."), | |
10582 | catch_syscall_command_1, | |
10583 | catch_syscall_completer, | |
44feb3ce TT |
10584 | CATCH_PERMANENT, |
10585 | CATCH_TEMPORARY); | |
44feb3ce TT |
10586 | add_catch_command ("exception", _("\ |
10587 | Catch Ada exceptions, when raised.\n\ | |
10588 | With an argument, catch only exceptions with the given name."), | |
10589 | catch_ada_exception_command, | |
a96d9b2e | 10590 | NULL, |
44feb3ce TT |
10591 | CATCH_PERMANENT, |
10592 | CATCH_TEMPORARY); | |
10593 | add_catch_command ("assert", _("\ | |
10594 | Catch failed Ada assertions, when raised.\n\ | |
10595 | With an argument, catch only exceptions with the given name."), | |
10596 | catch_assert_command, | |
a96d9b2e | 10597 | NULL, |
44feb3ce TT |
10598 | CATCH_PERMANENT, |
10599 | CATCH_TEMPORARY); | |
c5aa993b | 10600 | |
1bedd215 AC |
10601 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
10602 | Set a watchpoint for an expression.\n\ | |
c906108c | 10603 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10604 | an expression changes.")); |
65d12d83 | 10605 | set_cmd_completer (c, expression_completer); |
c906108c | 10606 | |
1bedd215 AC |
10607 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
10608 | Set a read watchpoint for an expression.\n\ | |
c906108c | 10609 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10610 | an expression is read.")); |
65d12d83 | 10611 | set_cmd_completer (c, expression_completer); |
c906108c | 10612 | |
1bedd215 AC |
10613 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
10614 | Set a watchpoint for an expression.\n\ | |
c906108c | 10615 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 10616 | an expression is either read or written.")); |
65d12d83 | 10617 | set_cmd_completer (c, expression_completer); |
c906108c SS |
10618 | |
10619 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 10620 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
10621 | |
10622 | ||
920d2a44 AC |
10623 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
10624 | respond to changes - contrary to the description. */ | |
85c07804 AC |
10625 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
10626 | &can_use_hw_watchpoints, _("\ | |
10627 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
10628 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
10629 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
10630 | such is available. (However, any hardware watchpoints that were\n\ | |
10631 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
10632 | hardware.)"), |
10633 | NULL, | |
920d2a44 | 10634 | show_can_use_hw_watchpoints, |
85c07804 | 10635 | &setlist, &showlist); |
c906108c SS |
10636 | |
10637 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 10638 | |
1042e4c0 SS |
10639 | /* Tracepoint manipulation commands. */ |
10640 | ||
10641 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
10642 | Set a tracepoint at specified line or function.\n\ | |
10643 | \n" | |
10644 | BREAK_ARGS_HELP ("trace") "\n\ | |
10645 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
10646 | set_cmd_completer (c, location_completer); | |
10647 | ||
10648 | add_com_alias ("tp", "trace", class_alias, 0); | |
10649 | add_com_alias ("tr", "trace", class_alias, 1); | |
10650 | add_com_alias ("tra", "trace", class_alias, 1); | |
10651 | add_com_alias ("trac", "trace", class_alias, 1); | |
10652 | ||
7a697b8d SS |
10653 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
10654 | Set a fast tracepoint at specified line or function.\n\ | |
10655 | \n" | |
10656 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
10657 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
10658 | set_cmd_completer (c, location_completer); | |
10659 | ||
1042e4c0 SS |
10660 | add_info ("tracepoints", tracepoints_info, _("\ |
10661 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
10662 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
10663 | last tracepoint set.")); | |
10664 | ||
10665 | add_info_alias ("tp", "tracepoints", 1); | |
10666 | ||
10667 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
10668 | Delete specified tracepoints.\n\ | |
10669 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10670 | No argument means delete all tracepoints."), | |
10671 | &deletelist); | |
10672 | ||
10673 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
10674 | Disable specified tracepoints.\n\ | |
10675 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10676 | No argument means disable all tracepoints."), | |
10677 | &disablelist); | |
10678 | deprecate_cmd (c, "disable"); | |
10679 | ||
10680 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
10681 | Enable specified tracepoints.\n\ | |
10682 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
10683 | No argument means enable all tracepoints."), | |
10684 | &enablelist); | |
10685 | deprecate_cmd (c, "enable"); | |
10686 | ||
10687 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
10688 | Set the passcount for a tracepoint.\n\ | |
10689 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
10690 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
10691 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
10692 | ||
10693 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
10694 | Save current tracepoint definitions as a script.\n\ | |
10695 | Use the 'source' command in another debug session to restore them.")); | |
10696 | set_cmd_completer (c, filename_completer); | |
10697 | ||
1bedd215 | 10698 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
10699 | Breakpoint specific settings\n\ |
10700 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 10701 | pending breakpoint behavior"), |
fa8d40ab JJ |
10702 | &breakpoint_set_cmdlist, "set breakpoint ", |
10703 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 10704 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
10705 | Breakpoint specific settings\n\ |
10706 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 10707 | pending breakpoint behavior"), |
fa8d40ab JJ |
10708 | &breakpoint_show_cmdlist, "show breakpoint ", |
10709 | 0/*allow-unknown*/, &showlist); | |
10710 | ||
7915a72c AC |
10711 | add_setshow_auto_boolean_cmd ("pending", no_class, |
10712 | &pending_break_support, _("\ | |
10713 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
10714 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
10715 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
10716 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
10717 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 10718 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 10719 | NULL, |
920d2a44 | 10720 | show_pending_break_support, |
6e1d7d6c AC |
10721 | &breakpoint_set_cmdlist, |
10722 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
10723 | |
10724 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
10725 | |
10726 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
10727 | &automatic_hardware_breakpoints, _("\ | |
10728 | Set automatic usage of hardware breakpoints."), _("\ | |
10729 | Show automatic usage of hardware breakpoints."), _("\ | |
10730 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
10731 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
10732 | a warning will be emitted for such breakpoints."), | |
10733 | NULL, | |
10734 | show_automatic_hardware_breakpoints, | |
10735 | &breakpoint_set_cmdlist, | |
10736 | &breakpoint_show_cmdlist); | |
74960c60 | 10737 | |
33e5cbd6 PA |
10738 | add_setshow_enum_cmd ("always-inserted", class_support, |
10739 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
10740 | Set mode for inserting breakpoints."), _("\ |
10741 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
10742 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
10743 | resumed, and removed when execution stops. When this mode is on,\n\ | |
10744 | breakpoints are inserted immediately and removed only when the user\n\ | |
10745 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
10746 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
10747 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
10748 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
10749 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
10750 | NULL, |
10751 | &show_always_inserted_mode, | |
10752 | &breakpoint_set_cmdlist, | |
10753 | &breakpoint_show_cmdlist); | |
765dc015 VP |
10754 | |
10755 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
10756 | |
10757 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 10758 | } |