Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7b6bb8da | 5 | 2008, 2009, 2010, 2011 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" | |
50f182aa | 41 | #include "gdb-demangle.h" |
0ba1096a | 42 | #include "filenames.h" |
c906108c SS |
43 | #include "annotate.h" |
44 | #include "symfile.h" | |
45 | #include "objfiles.h" | |
0378c332 | 46 | #include "source.h" |
c5f0f3d0 | 47 | #include "linespec.h" |
c94fdfd0 | 48 | #include "completer.h" |
5b7f31a4 | 49 | #include "gdb.h" |
8b93c638 | 50 | #include "ui-out.h" |
e1507482 | 51 | #include "cli/cli-script.h" |
0225421b | 52 | #include "gdb_assert.h" |
fe898f56 | 53 | #include "block.h" |
a77053c2 | 54 | #include "solib.h" |
84acb35a JJ |
55 | #include "solist.h" |
56 | #include "observer.h" | |
60250e8b | 57 | #include "exceptions.h" |
765dc015 | 58 | #include "memattr.h" |
f7f9143b | 59 | #include "ada-lang.h" |
d1aa2f50 | 60 | #include "top.h" |
fa4727a6 | 61 | #include "wrapper.h" |
79a45b7d | 62 | #include "valprint.h" |
4efc6507 | 63 | #include "jit.h" |
a96d9b2e | 64 | #include "xml-syscall.h" |
65d79d4b | 65 | #include "parser-defs.h" |
e9cafbcc | 66 | #include "cli/cli-utils.h" |
be34f849 | 67 | #include "continuations.h" |
1bfeeb0f JL |
68 | #include "stack.h" |
69 | #include "skip.h" | |
049e32d3 | 70 | #include "record.h" |
c906108c | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
7371cf6d | 80 | #include "python/python.h" |
104c1213 | 81 | |
4a64f543 | 82 | /* Prototypes for local functions. */ |
c906108c | 83 | |
a14ed312 | 84 | static void enable_delete_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_once_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void disable_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void enable_command (char *, int); |
c906108c | 91 | |
95a42b64 TT |
92 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
93 | void *), | |
94 | void *); | |
c906108c | 95 | |
a14ed312 | 96 | static void ignore_command (char *, int); |
c906108c | 97 | |
4efb68b1 | 98 | static int breakpoint_re_set_one (void *); |
c906108c | 99 | |
348d480f PA |
100 | static void breakpoint_re_set_default (struct breakpoint *); |
101 | ||
a14ed312 | 102 | static void clear_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void catch_command (char *, int); |
c906108c | 105 | |
a9634178 | 106 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 107 | |
98deb0da | 108 | static void break_command_1 (char *, int, int); |
c906108c | 109 | |
a14ed312 | 110 | static void mention (struct breakpoint *); |
c906108c | 111 | |
348d480f PA |
112 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
113 | enum bptype, | |
c0a91b2b | 114 | const struct breakpoint_ops *); |
3742cc8b YQ |
115 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
116 | const struct symtab_and_line *); | |
117 | ||
4a64f543 MS |
118 | /* This function is used in gdbtk sources and thus can not be made |
119 | static. */ | |
63c252f8 | 120 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 121 | struct symtab_and_line, |
c0a91b2b TT |
122 | enum bptype, |
123 | const struct breakpoint_ops *); | |
c906108c | 124 | |
06edf0c0 PA |
125 | static struct breakpoint * |
126 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
127 | enum bptype type, | |
c0a91b2b | 128 | const struct breakpoint_ops *ops); |
06edf0c0 | 129 | |
76897487 KB |
130 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
131 | ||
a6d9a66e UW |
132 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
133 | CORE_ADDR bpaddr, | |
88f7da05 | 134 | enum bptype bptype); |
76897487 | 135 | |
6c95b8df PA |
136 | static void describe_other_breakpoints (struct gdbarch *, |
137 | struct program_space *, CORE_ADDR, | |
5af949e3 | 138 | struct obj_section *, int); |
c906108c | 139 | |
6c95b8df PA |
140 | static int breakpoint_address_match (struct address_space *aspace1, |
141 | CORE_ADDR addr1, | |
142 | struct address_space *aspace2, | |
143 | CORE_ADDR addr2); | |
144 | ||
85d721b8 PA |
145 | static int watchpoint_locations_match (struct bp_location *loc1, |
146 | struct bp_location *loc2); | |
147 | ||
f1310107 TJB |
148 | static int breakpoint_location_address_match (struct bp_location *bl, |
149 | struct address_space *aspace, | |
150 | CORE_ADDR addr); | |
151 | ||
a14ed312 | 152 | static void breakpoints_info (char *, int); |
c906108c | 153 | |
d77f58be SS |
154 | static void watchpoints_info (char *, int); |
155 | ||
e5a67952 MS |
156 | static int breakpoint_1 (char *, int, |
157 | int (*) (const struct breakpoint *)); | |
c906108c | 158 | |
4efb68b1 | 159 | static int breakpoint_cond_eval (void *); |
c906108c | 160 | |
4efb68b1 | 161 | static void cleanup_executing_breakpoints (void *); |
c906108c | 162 | |
a14ed312 | 163 | static void commands_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void condition_command (char *, int); |
c906108c | 166 | |
c5aa993b JM |
167 | typedef enum |
168 | { | |
169 | mark_inserted, | |
170 | mark_uninserted | |
171 | } | |
172 | insertion_state_t; | |
c906108c | 173 | |
0bde7532 | 174 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 175 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 176 | |
e514a9d6 | 177 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 178 | |
4efb68b1 | 179 | static int watchpoint_check (void *); |
c906108c | 180 | |
a14ed312 | 181 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 182 | |
a14ed312 | 183 | static int hw_breakpoint_used_count (void); |
c906108c | 184 | |
a1398e0c PA |
185 | static int hw_watchpoint_use_count (struct breakpoint *); |
186 | ||
187 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
188 | enum bptype type, | |
189 | int *other_type_used); | |
c906108c | 190 | |
a14ed312 | 191 | static void hbreak_command (char *, int); |
c906108c | 192 | |
a14ed312 | 193 | static void thbreak_command (char *, int); |
c906108c | 194 | |
51be5b68 | 195 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp); |
c906108c | 196 | |
a14ed312 | 197 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 198 | |
a14ed312 | 199 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 200 | |
a14ed312 | 201 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 202 | |
a14ed312 | 203 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 204 | |
d85310f7 MS |
205 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
206 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 207 | |
a14ed312 | 208 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 209 | |
d03285ec UW |
210 | static void detach_single_step_breakpoints (void); |
211 | ||
6c95b8df PA |
212 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
213 | CORE_ADDR pc); | |
1aafd4da | 214 | |
fe3f5fa8 | 215 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
216 | static void incref_bp_location (struct bp_location *loc); |
217 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 218 | |
39d61571 | 219 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 220 | |
b60e7edf | 221 | static void update_global_location_list (int); |
a5606eee | 222 | |
b60e7edf | 223 | static void update_global_location_list_nothrow (int); |
74960c60 | 224 | |
d77f58be | 225 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
226 | |
227 | static void insert_breakpoint_locations (void); | |
a5606eee | 228 | |
a96d9b2e SDJ |
229 | static int syscall_catchpoint_p (struct breakpoint *b); |
230 | ||
1042e4c0 SS |
231 | static void tracepoints_info (char *, int); |
232 | ||
233 | static void delete_trace_command (char *, int); | |
234 | ||
235 | static void enable_trace_command (char *, int); | |
236 | ||
237 | static void disable_trace_command (char *, int); | |
238 | ||
239 | static void trace_pass_command (char *, int); | |
240 | ||
9c06b0b4 TJB |
241 | static int is_masked_watchpoint (const struct breakpoint *b); |
242 | ||
0fb4aa4b PA |
243 | /* Assuming we're creating a static tracepoint, does S look like a |
244 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
245 | #define is_marker_spec(s) \ | |
f5a8e22b | 246 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 247 | |
2060206e PA |
248 | /* The abstract base class all breakpoint_ops structures inherit |
249 | from. */ | |
250 | static struct breakpoint_ops base_breakpoint_ops; | |
251 | ||
252 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
253 | that are implemented on top of software or hardware breakpoints | |
254 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
255 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
256 | ||
257 | /* Internal breakpoints class type. */ | |
06edf0c0 | 258 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
259 | |
260 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
261 | static struct breakpoint_ops momentary_breakpoint_ops; |
262 | ||
2060206e PA |
263 | /* The breakpoint_ops structure to be used in regular user created |
264 | breakpoints. */ | |
265 | struct breakpoint_ops bkpt_breakpoint_ops; | |
266 | ||
5cea2a26 PA |
267 | /* A reference-counted struct command_line. This lets multiple |
268 | breakpoints share a single command list. */ | |
269 | struct counted_command_line | |
270 | { | |
271 | /* The reference count. */ | |
272 | int refc; | |
273 | ||
274 | /* The command list. */ | |
275 | struct command_line *commands; | |
276 | }; | |
277 | ||
278 | struct command_line * | |
279 | breakpoint_commands (struct breakpoint *b) | |
280 | { | |
281 | return b->commands ? b->commands->commands : NULL; | |
282 | } | |
3daf8fe5 | 283 | |
f3b1572e PA |
284 | /* Flag indicating that a command has proceeded the inferior past the |
285 | current breakpoint. */ | |
286 | ||
287 | static int breakpoint_proceeded; | |
288 | ||
956a9fb9 | 289 | const char * |
2cec12e5 AR |
290 | bpdisp_text (enum bpdisp disp) |
291 | { | |
4a64f543 MS |
292 | /* NOTE: the following values are a part of MI protocol and |
293 | represent values of 'disp' field returned when inferior stops at | |
294 | a breakpoint. */ | |
bc043ef3 | 295 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 296 | |
2cec12e5 AR |
297 | return bpdisps[(int) disp]; |
298 | } | |
c906108c | 299 | |
4a64f543 | 300 | /* Prototypes for exported functions. */ |
c906108c | 301 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 302 | if such is available. */ |
c906108c SS |
303 | static int can_use_hw_watchpoints; |
304 | ||
920d2a44 AC |
305 | static void |
306 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
307 | struct cmd_list_element *c, | |
308 | const char *value) | |
309 | { | |
3e43a32a MS |
310 | fprintf_filtered (file, |
311 | _("Debugger's willingness to use " | |
312 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
313 | value); |
314 | } | |
315 | ||
fa8d40ab JJ |
316 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
317 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 318 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
319 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
320 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
321 | static void |
322 | show_pending_break_support (struct ui_file *file, int from_tty, | |
323 | struct cmd_list_element *c, | |
324 | const char *value) | |
325 | { | |
3e43a32a MS |
326 | fprintf_filtered (file, |
327 | _("Debugger's behavior regarding " | |
328 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
329 | value); |
330 | } | |
fa8d40ab | 331 | |
765dc015 | 332 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 333 | set with "break" but falling in read-only memory. |
765dc015 VP |
334 | If 0, gdb will warn about such breakpoints, but won't automatically |
335 | use hardware breakpoints. */ | |
336 | static int automatic_hardware_breakpoints; | |
337 | static void | |
338 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
339 | struct cmd_list_element *c, | |
340 | const char *value) | |
341 | { | |
3e43a32a MS |
342 | fprintf_filtered (file, |
343 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
344 | value); |
345 | } | |
346 | ||
33e5cbd6 PA |
347 | /* If on, gdb will keep breakpoints inserted even as inferior is |
348 | stopped, and immediately insert any new breakpoints. If off, gdb | |
349 | will insert breakpoints into inferior only when resuming it, and | |
350 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
351 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
352 | ||
353 | static const char always_inserted_auto[] = "auto"; | |
354 | static const char always_inserted_on[] = "on"; | |
355 | static const char always_inserted_off[] = "off"; | |
356 | static const char *always_inserted_enums[] = { | |
357 | always_inserted_auto, | |
358 | always_inserted_off, | |
359 | always_inserted_on, | |
360 | NULL | |
361 | }; | |
362 | static const char *always_inserted_mode = always_inserted_auto; | |
363 | static void | |
74960c60 | 364 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 365 | struct cmd_list_element *c, const char *value) |
74960c60 | 366 | { |
33e5cbd6 | 367 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
368 | fprintf_filtered (file, |
369 | _("Always inserted breakpoint " | |
370 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
371 | value, |
372 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
373 | else | |
3e43a32a MS |
374 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
375 | value); | |
74960c60 VP |
376 | } |
377 | ||
33e5cbd6 PA |
378 | int |
379 | breakpoints_always_inserted_mode (void) | |
380 | { | |
049e32d3 PA |
381 | return ((always_inserted_mode == always_inserted_on |
382 | || (always_inserted_mode == always_inserted_auto && non_stop)) | |
383 | && !RECORD_IS_USED); | |
33e5cbd6 | 384 | } |
765dc015 | 385 | |
a14ed312 | 386 | void _initialize_breakpoint (void); |
c906108c | 387 | |
c906108c SS |
388 | /* Are we executing breakpoint commands? */ |
389 | static int executing_breakpoint_commands; | |
390 | ||
c02f5703 MS |
391 | /* Are overlay event breakpoints enabled? */ |
392 | static int overlay_events_enabled; | |
393 | ||
e09342b5 TJB |
394 | /* See description in breakpoint.h. */ |
395 | int target_exact_watchpoints = 0; | |
396 | ||
c906108c | 397 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 398 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 399 | current breakpoint. */ |
c906108c | 400 | |
5c44784c | 401 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 402 | |
5c44784c JM |
403 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
404 | for (B = breakpoint_chain; \ | |
405 | B ? (TMP=B->next, 1): 0; \ | |
406 | B = TMP) | |
c906108c | 407 | |
4a64f543 MS |
408 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
409 | not provided so update_global_location_list must not be called | |
410 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 411 | |
876fa593 JK |
412 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
413 | for (BP_TMP = bp_location; \ | |
414 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
415 | BP_TMP++) | |
7cc221ef | 416 | |
1042e4c0 SS |
417 | /* Iterator for tracepoints only. */ |
418 | ||
419 | #define ALL_TRACEPOINTS(B) \ | |
420 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 421 | if (is_tracepoint (B)) |
1042e4c0 | 422 | |
7cc221ef | 423 | /* Chains of all breakpoints defined. */ |
c906108c SS |
424 | |
425 | struct breakpoint *breakpoint_chain; | |
426 | ||
876fa593 JK |
427 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
428 | ||
429 | static struct bp_location **bp_location; | |
430 | ||
431 | /* Number of elements of BP_LOCATION. */ | |
432 | ||
433 | static unsigned bp_location_count; | |
434 | ||
4a64f543 MS |
435 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
436 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
437 | result from bp_location_has_shadow. You can use it for roughly | |
438 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
439 | an address you need to read. */ | |
876fa593 JK |
440 | |
441 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
442 | ||
4a64f543 MS |
443 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
444 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
445 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
446 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
447 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
448 | |
449 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 450 | |
4a64f543 MS |
451 | /* The locations that no longer correspond to any breakpoint, unlinked |
452 | from bp_location array, but for which a hit may still be reported | |
453 | by a target. */ | |
20874c92 VP |
454 | VEC(bp_location_p) *moribund_locations = NULL; |
455 | ||
c906108c SS |
456 | /* Number of last breakpoint made. */ |
457 | ||
95a42b64 TT |
458 | static int breakpoint_count; |
459 | ||
86b17b60 PA |
460 | /* The value of `breakpoint_count' before the last command that |
461 | created breakpoints. If the last (break-like) command created more | |
462 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
463 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
464 | static int prev_breakpoint_count; | |
c906108c | 465 | |
1042e4c0 SS |
466 | /* Number of last tracepoint made. */ |
467 | ||
95a42b64 | 468 | static int tracepoint_count; |
1042e4c0 | 469 | |
6149aea9 PA |
470 | static struct cmd_list_element *breakpoint_set_cmdlist; |
471 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 472 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 473 | |
468d015d JJ |
474 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
475 | static int | |
476 | breakpoint_enabled (struct breakpoint *b) | |
477 | { | |
0d381245 | 478 | return (b->enable_state == bp_enabled); |
468d015d JJ |
479 | } |
480 | ||
c906108c SS |
481 | /* Set breakpoint count to NUM. */ |
482 | ||
95a42b64 | 483 | static void |
fba45db2 | 484 | set_breakpoint_count (int num) |
c906108c | 485 | { |
86b17b60 | 486 | prev_breakpoint_count = breakpoint_count; |
c906108c | 487 | breakpoint_count = num; |
4fa62494 | 488 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
489 | } |
490 | ||
86b17b60 PA |
491 | /* Used by `start_rbreak_breakpoints' below, to record the current |
492 | breakpoint count before "rbreak" creates any breakpoint. */ | |
493 | static int rbreak_start_breakpoint_count; | |
494 | ||
95a42b64 TT |
495 | /* Called at the start an "rbreak" command to record the first |
496 | breakpoint made. */ | |
86b17b60 | 497 | |
95a42b64 TT |
498 | void |
499 | start_rbreak_breakpoints (void) | |
500 | { | |
86b17b60 | 501 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
502 | } |
503 | ||
504 | /* Called at the end of an "rbreak" command to record the last | |
505 | breakpoint made. */ | |
86b17b60 | 506 | |
95a42b64 TT |
507 | void |
508 | end_rbreak_breakpoints (void) | |
509 | { | |
86b17b60 | 510 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
511 | } |
512 | ||
4a64f543 | 513 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
514 | |
515 | void | |
fba45db2 | 516 | clear_breakpoint_hit_counts (void) |
c906108c SS |
517 | { |
518 | struct breakpoint *b; | |
519 | ||
520 | ALL_BREAKPOINTS (b) | |
521 | b->hit_count = 0; | |
522 | } | |
523 | ||
9add0f1b TT |
524 | /* Allocate a new counted_command_line with reference count of 1. |
525 | The new structure owns COMMANDS. */ | |
526 | ||
527 | static struct counted_command_line * | |
528 | alloc_counted_command_line (struct command_line *commands) | |
529 | { | |
530 | struct counted_command_line *result | |
531 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 532 | |
9add0f1b TT |
533 | result->refc = 1; |
534 | result->commands = commands; | |
535 | return result; | |
536 | } | |
537 | ||
538 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
539 | ||
540 | static void | |
541 | incref_counted_command_line (struct counted_command_line *cmd) | |
542 | { | |
543 | if (cmd) | |
544 | ++cmd->refc; | |
545 | } | |
546 | ||
547 | /* Decrement reference count. If the reference count reaches 0, | |
548 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
549 | nothing if *CMDP is NULL. */ | |
550 | ||
551 | static void | |
552 | decref_counted_command_line (struct counted_command_line **cmdp) | |
553 | { | |
554 | if (*cmdp) | |
555 | { | |
556 | if (--(*cmdp)->refc == 0) | |
557 | { | |
558 | free_command_lines (&(*cmdp)->commands); | |
559 | xfree (*cmdp); | |
560 | } | |
561 | *cmdp = NULL; | |
562 | } | |
563 | } | |
564 | ||
565 | /* A cleanup function that calls decref_counted_command_line. */ | |
566 | ||
567 | static void | |
568 | do_cleanup_counted_command_line (void *arg) | |
569 | { | |
570 | decref_counted_command_line (arg); | |
571 | } | |
572 | ||
573 | /* Create a cleanup that calls decref_counted_command_line on the | |
574 | argument. */ | |
575 | ||
576 | static struct cleanup * | |
577 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
578 | { | |
579 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
580 | } | |
581 | ||
c906108c | 582 | \f |
48cb2d85 VP |
583 | /* Return the breakpoint with the specified number, or NULL |
584 | if the number does not refer to an existing breakpoint. */ | |
585 | ||
586 | struct breakpoint * | |
587 | get_breakpoint (int num) | |
588 | { | |
589 | struct breakpoint *b; | |
590 | ||
591 | ALL_BREAKPOINTS (b) | |
592 | if (b->number == num) | |
593 | return b; | |
594 | ||
595 | return NULL; | |
596 | } | |
5c44784c | 597 | |
c906108c | 598 | \f |
adc36818 PM |
599 | |
600 | void | |
601 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
602 | int from_tty) | |
603 | { | |
3a5c3e22 PA |
604 | xfree (b->cond_string); |
605 | b->cond_string = NULL; | |
adc36818 | 606 | |
3a5c3e22 | 607 | if (is_watchpoint (b)) |
adc36818 | 608 | { |
3a5c3e22 PA |
609 | struct watchpoint *w = (struct watchpoint *) b; |
610 | ||
611 | xfree (w->cond_exp); | |
612 | w->cond_exp = NULL; | |
613 | } | |
614 | else | |
615 | { | |
616 | struct bp_location *loc; | |
617 | ||
618 | for (loc = b->loc; loc; loc = loc->next) | |
619 | { | |
620 | xfree (loc->cond); | |
621 | loc->cond = NULL; | |
622 | } | |
adc36818 | 623 | } |
adc36818 PM |
624 | |
625 | if (*exp == 0) | |
626 | { | |
627 | if (from_tty) | |
628 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
629 | } | |
630 | else | |
631 | { | |
632 | char *arg = exp; | |
cc59ec59 | 633 | |
adc36818 PM |
634 | /* I don't know if it matters whether this is the string the user |
635 | typed in or the decompiled expression. */ | |
636 | b->cond_string = xstrdup (arg); | |
637 | b->condition_not_parsed = 0; | |
638 | ||
639 | if (is_watchpoint (b)) | |
640 | { | |
3a5c3e22 PA |
641 | struct watchpoint *w = (struct watchpoint *) b; |
642 | ||
adc36818 PM |
643 | innermost_block = NULL; |
644 | arg = exp; | |
3a5c3e22 | 645 | w->cond_exp = parse_exp_1 (&arg, 0, 0); |
adc36818 PM |
646 | if (*arg) |
647 | error (_("Junk at end of expression")); | |
3a5c3e22 | 648 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
649 | } |
650 | else | |
651 | { | |
3a5c3e22 PA |
652 | struct bp_location *loc; |
653 | ||
adc36818 PM |
654 | for (loc = b->loc; loc; loc = loc->next) |
655 | { | |
656 | arg = exp; | |
657 | loc->cond = | |
658 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
659 | if (*arg) | |
660 | error (_("Junk at end of expression")); | |
661 | } | |
662 | } | |
663 | } | |
664 | breakpoints_changed (); | |
8d3788bd | 665 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
666 | } |
667 | ||
c906108c SS |
668 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
669 | ||
670 | static void | |
fba45db2 | 671 | condition_command (char *arg, int from_tty) |
c906108c | 672 | { |
52f0bd74 | 673 | struct breakpoint *b; |
c906108c | 674 | char *p; |
52f0bd74 | 675 | int bnum; |
c906108c SS |
676 | |
677 | if (arg == 0) | |
e2e0b3e5 | 678 | error_no_arg (_("breakpoint number")); |
c906108c SS |
679 | |
680 | p = arg; | |
681 | bnum = get_number (&p); | |
5c44784c | 682 | if (bnum == 0) |
8a3fe4f8 | 683 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
684 | |
685 | ALL_BREAKPOINTS (b) | |
686 | if (b->number == bnum) | |
2f069f6f | 687 | { |
7371cf6d PM |
688 | /* Check if this breakpoint has a Python object assigned to |
689 | it, and if it has a definition of the "stop" | |
690 | method. This method and conditions entered into GDB from | |
691 | the CLI are mutually exclusive. */ | |
692 | if (b->py_bp_object | |
693 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
694 | error (_("Cannot set a condition where a Python 'stop' " | |
695 | "method has been defined in the breakpoint.")); | |
2566ad2d | 696 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
697 | return; |
698 | } | |
c906108c | 699 | |
8a3fe4f8 | 700 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
701 | } |
702 | ||
a7bdde9e VP |
703 | /* Check that COMMAND do not contain commands that are suitable |
704 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
705 | Throw if any such commands is found. */ |
706 | ||
a7bdde9e VP |
707 | static void |
708 | check_no_tracepoint_commands (struct command_line *commands) | |
709 | { | |
710 | struct command_line *c; | |
cc59ec59 | 711 | |
a7bdde9e VP |
712 | for (c = commands; c; c = c->next) |
713 | { | |
714 | int i; | |
715 | ||
716 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
717 | error (_("The 'while-stepping' command can " |
718 | "only be used for tracepoints")); | |
a7bdde9e VP |
719 | |
720 | for (i = 0; i < c->body_count; ++i) | |
721 | check_no_tracepoint_commands ((c->body_list)[i]); | |
722 | ||
723 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 724 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
725 | command directly. */ |
726 | if (strstr (c->line, "collect ") == c->line) | |
727 | error (_("The 'collect' command can only be used for tracepoints")); | |
728 | ||
51661e93 VP |
729 | if (strstr (c->line, "teval ") == c->line) |
730 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
731 | } |
732 | } | |
733 | ||
d77f58be SS |
734 | /* Encapsulate tests for different types of tracepoints. */ |
735 | ||
d9b3f62e PA |
736 | static int |
737 | is_tracepoint_type (enum bptype type) | |
738 | { | |
739 | return (type == bp_tracepoint | |
740 | || type == bp_fast_tracepoint | |
741 | || type == bp_static_tracepoint); | |
742 | } | |
743 | ||
a7bdde9e | 744 | int |
d77f58be | 745 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 746 | { |
d9b3f62e | 747 | return is_tracepoint_type (b->type); |
a7bdde9e | 748 | } |
d9b3f62e | 749 | |
e5dd4106 | 750 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
751 | breakpoint. This function will throw an exception if a problem is |
752 | found. */ | |
48cb2d85 | 753 | |
95a42b64 TT |
754 | static void |
755 | validate_commands_for_breakpoint (struct breakpoint *b, | |
756 | struct command_line *commands) | |
48cb2d85 | 757 | { |
d77f58be | 758 | if (is_tracepoint (b)) |
a7bdde9e | 759 | { |
4a64f543 MS |
760 | /* We need to verify that each top-level element of commands is |
761 | valid for tracepoints, that there's at most one | |
762 | while-stepping element, and that while-stepping's body has | |
763 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
764 | struct command_line *c; |
765 | struct command_line *while_stepping = 0; | |
766 | for (c = commands; c; c = c->next) | |
767 | { | |
a7bdde9e VP |
768 | if (c->control_type == while_stepping_control) |
769 | { | |
770 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
771 | error (_("The 'while-stepping' command " |
772 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 773 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
774 | error (_("The 'while-stepping' command " |
775 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
776 | |
777 | if (while_stepping) | |
3e43a32a MS |
778 | error (_("The 'while-stepping' command " |
779 | "can be used only once")); | |
a7bdde9e VP |
780 | else |
781 | while_stepping = c; | |
782 | } | |
783 | } | |
784 | if (while_stepping) | |
785 | { | |
786 | struct command_line *c2; | |
787 | ||
788 | gdb_assert (while_stepping->body_count == 1); | |
789 | c2 = while_stepping->body_list[0]; | |
790 | for (; c2; c2 = c2->next) | |
791 | { | |
a7bdde9e VP |
792 | if (c2->control_type == while_stepping_control) |
793 | error (_("The 'while-stepping' command cannot be nested")); | |
794 | } | |
795 | } | |
796 | } | |
797 | else | |
798 | { | |
799 | check_no_tracepoint_commands (commands); | |
800 | } | |
95a42b64 TT |
801 | } |
802 | ||
0fb4aa4b PA |
803 | /* Return a vector of all the static tracepoints set at ADDR. The |
804 | caller is responsible for releasing the vector. */ | |
805 | ||
806 | VEC(breakpoint_p) * | |
807 | static_tracepoints_here (CORE_ADDR addr) | |
808 | { | |
809 | struct breakpoint *b; | |
810 | VEC(breakpoint_p) *found = 0; | |
811 | struct bp_location *loc; | |
812 | ||
813 | ALL_BREAKPOINTS (b) | |
814 | if (b->type == bp_static_tracepoint) | |
815 | { | |
816 | for (loc = b->loc; loc; loc = loc->next) | |
817 | if (loc->address == addr) | |
818 | VEC_safe_push(breakpoint_p, found, b); | |
819 | } | |
820 | ||
821 | return found; | |
822 | } | |
823 | ||
95a42b64 | 824 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 825 | validate that only allowed commands are included. */ |
95a42b64 TT |
826 | |
827 | void | |
4a64f543 MS |
828 | breakpoint_set_commands (struct breakpoint *b, |
829 | struct command_line *commands) | |
95a42b64 TT |
830 | { |
831 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 832 | |
9add0f1b TT |
833 | decref_counted_command_line (&b->commands); |
834 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 835 | breakpoints_changed (); |
8d3788bd | 836 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
837 | } |
838 | ||
45a43567 TT |
839 | /* Set the internal `silent' flag on the breakpoint. Note that this |
840 | is not the same as the "silent" that may appear in the breakpoint's | |
841 | commands. */ | |
842 | ||
843 | void | |
844 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
845 | { | |
846 | int old_silent = b->silent; | |
847 | ||
848 | b->silent = silent; | |
849 | if (old_silent != silent) | |
8d3788bd | 850 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
851 | } |
852 | ||
853 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
854 | breakpoint work for any thread. */ | |
855 | ||
856 | void | |
857 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
858 | { | |
859 | int old_thread = b->thread; | |
860 | ||
861 | b->thread = thread; | |
862 | if (old_thread != thread) | |
8d3788bd | 863 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
864 | } |
865 | ||
866 | /* Set the task for this breakpoint. If TASK is 0, make the | |
867 | breakpoint work for any task. */ | |
868 | ||
869 | void | |
870 | breakpoint_set_task (struct breakpoint *b, int task) | |
871 | { | |
872 | int old_task = b->task; | |
873 | ||
874 | b->task = task; | |
875 | if (old_task != task) | |
8d3788bd | 876 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
877 | } |
878 | ||
95a42b64 TT |
879 | void |
880 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
881 | { |
882 | struct breakpoint *b = closure; | |
cc59ec59 | 883 | |
a7bdde9e VP |
884 | validate_actionline (&line, b); |
885 | } | |
886 | ||
95a42b64 TT |
887 | /* A structure used to pass information through |
888 | map_breakpoint_numbers. */ | |
889 | ||
890 | struct commands_info | |
891 | { | |
892 | /* True if the command was typed at a tty. */ | |
893 | int from_tty; | |
86b17b60 PA |
894 | |
895 | /* The breakpoint range spec. */ | |
896 | char *arg; | |
897 | ||
95a42b64 TT |
898 | /* Non-NULL if the body of the commands are being read from this |
899 | already-parsed command. */ | |
900 | struct command_line *control; | |
86b17b60 | 901 | |
95a42b64 TT |
902 | /* The command lines read from the user, or NULL if they have not |
903 | yet been read. */ | |
904 | struct counted_command_line *cmd; | |
905 | }; | |
906 | ||
907 | /* A callback for map_breakpoint_numbers that sets the commands for | |
908 | commands_command. */ | |
909 | ||
c906108c | 910 | static void |
95a42b64 | 911 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 912 | { |
95a42b64 | 913 | struct commands_info *info = data; |
c906108c | 914 | |
95a42b64 TT |
915 | if (info->cmd == NULL) |
916 | { | |
917 | struct command_line *l; | |
5c44784c | 918 | |
95a42b64 TT |
919 | if (info->control != NULL) |
920 | l = copy_command_lines (info->control->body_list[0]); | |
921 | else | |
86b17b60 PA |
922 | { |
923 | struct cleanup *old_chain; | |
924 | char *str; | |
c5aa993b | 925 | |
3e43a32a MS |
926 | str = xstrprintf (_("Type commands for breakpoint(s) " |
927 | "%s, one per line."), | |
86b17b60 PA |
928 | info->arg); |
929 | ||
930 | old_chain = make_cleanup (xfree, str); | |
931 | ||
932 | l = read_command_lines (str, | |
933 | info->from_tty, 1, | |
d77f58be | 934 | (is_tracepoint (b) |
86b17b60 PA |
935 | ? check_tracepoint_command : 0), |
936 | b); | |
937 | ||
938 | do_cleanups (old_chain); | |
939 | } | |
a7bdde9e | 940 | |
95a42b64 TT |
941 | info->cmd = alloc_counted_command_line (l); |
942 | } | |
943 | ||
944 | /* If a breakpoint was on the list more than once, we don't need to | |
945 | do anything. */ | |
946 | if (b->commands != info->cmd) | |
947 | { | |
948 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
949 | incref_counted_command_line (info->cmd); | |
950 | decref_counted_command_line (&b->commands); | |
951 | b->commands = info->cmd; | |
952 | breakpoints_changed (); | |
8d3788bd | 953 | observer_notify_breakpoint_modified (b); |
c5aa993b | 954 | } |
95a42b64 TT |
955 | } |
956 | ||
957 | static void | |
4a64f543 MS |
958 | commands_command_1 (char *arg, int from_tty, |
959 | struct command_line *control) | |
95a42b64 TT |
960 | { |
961 | struct cleanup *cleanups; | |
962 | struct commands_info info; | |
963 | ||
964 | info.from_tty = from_tty; | |
965 | info.control = control; | |
966 | info.cmd = NULL; | |
967 | /* If we read command lines from the user, then `info' will hold an | |
968 | extra reference to the commands that we must clean up. */ | |
969 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
970 | ||
971 | if (arg == NULL || !*arg) | |
972 | { | |
86b17b60 | 973 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
974 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
975 | breakpoint_count); | |
95a42b64 TT |
976 | else if (breakpoint_count > 0) |
977 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
978 | else |
979 | { | |
980 | /* So that we don't try to free the incoming non-NULL | |
981 | argument in the cleanup below. Mapping breakpoint | |
982 | numbers will fail in this case. */ | |
983 | arg = NULL; | |
984 | } | |
95a42b64 | 985 | } |
9766ced4 SS |
986 | else |
987 | /* The command loop has some static state, so we need to preserve | |
988 | our argument. */ | |
989 | arg = xstrdup (arg); | |
86b17b60 PA |
990 | |
991 | if (arg != NULL) | |
992 | make_cleanup (xfree, arg); | |
993 | ||
994 | info.arg = arg; | |
95a42b64 TT |
995 | |
996 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
997 | ||
998 | if (info.cmd == NULL) | |
999 | error (_("No breakpoints specified.")); | |
1000 | ||
1001 | do_cleanups (cleanups); | |
1002 | } | |
1003 | ||
1004 | static void | |
1005 | commands_command (char *arg, int from_tty) | |
1006 | { | |
1007 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1008 | } |
40c03ae8 EZ |
1009 | |
1010 | /* Like commands_command, but instead of reading the commands from | |
1011 | input stream, takes them from an already parsed command structure. | |
1012 | ||
1013 | This is used by cli-script.c to DTRT with breakpoint commands | |
1014 | that are part of if and while bodies. */ | |
1015 | enum command_control_type | |
1016 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1017 | { | |
95a42b64 TT |
1018 | commands_command_1 (arg, 0, cmd); |
1019 | return simple_control; | |
40c03ae8 | 1020 | } |
876fa593 JK |
1021 | |
1022 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1023 | ||
1024 | static int | |
1025 | bp_location_has_shadow (struct bp_location *bl) | |
1026 | { | |
1027 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1028 | return 0; | |
1029 | if (!bl->inserted) | |
1030 | return 0; | |
1031 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1032 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1033 | return 0; |
1034 | return 1; | |
1035 | } | |
1036 | ||
8defab1a | 1037 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1038 | by replacing any memory breakpoints with their shadowed contents. |
1039 | ||
1040 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
1041 | bl->address - bp_location_placed_address_before_address_max |
1042 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1043 | The range we were requested to resolve shadows for is: |
1044 | memaddr ... memaddr + len | |
1045 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1046 | memaddr + len <= (bl->address |
1047 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1048 | and: |
35df4500 | 1049 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1050 | |
8defab1a | 1051 | void |
f0ba3972 PA |
1052 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1053 | const gdb_byte *writebuf_org, | |
1054 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1055 | { |
4a64f543 MS |
1056 | /* Left boundary, right boundary and median element of our binary |
1057 | search. */ | |
876fa593 JK |
1058 | unsigned bc_l, bc_r, bc; |
1059 | ||
4a64f543 MS |
1060 | /* Find BC_L which is a leftmost element which may affect BUF |
1061 | content. It is safe to report lower value but a failure to | |
1062 | report higher one. */ | |
876fa593 JK |
1063 | |
1064 | bc_l = 0; | |
1065 | bc_r = bp_location_count; | |
1066 | while (bc_l + 1 < bc_r) | |
1067 | { | |
35df4500 | 1068 | struct bp_location *bl; |
876fa593 JK |
1069 | |
1070 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1071 | bl = bp_location[bc]; |
876fa593 | 1072 | |
4a64f543 MS |
1073 | /* Check first BL->ADDRESS will not overflow due to the added |
1074 | constant. Then advance the left boundary only if we are sure | |
1075 | the BC element can in no way affect the BUF content (MEMADDR | |
1076 | to MEMADDR + LEN range). | |
876fa593 | 1077 | |
4a64f543 MS |
1078 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1079 | offset so that we cannot miss a breakpoint with its shadow | |
1080 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1081 | |
35df4500 TJB |
1082 | if ((bl->address + bp_location_shadow_len_after_address_max |
1083 | >= bl->address) | |
1084 | && (bl->address + bp_location_shadow_len_after_address_max | |
1085 | <= memaddr)) | |
876fa593 JK |
1086 | bc_l = bc; |
1087 | else | |
1088 | bc_r = bc; | |
1089 | } | |
1090 | ||
128070bb PA |
1091 | /* Due to the binary search above, we need to make sure we pick the |
1092 | first location that's at BC_L's address. E.g., if there are | |
1093 | multiple locations at the same address, BC_L may end up pointing | |
1094 | at a duplicate location, and miss the "master"/"inserted" | |
1095 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1096 | B: | |
1097 | ||
1098 | L1@A, L2@A, L3@B, ... | |
1099 | ||
1100 | BC_L could end up pointing at location L2, while the "master" | |
1101 | location could be L1. Since the `loc->inserted' flag is only set | |
1102 | on "master" locations, we'd forget to restore the shadow of L1 | |
1103 | and L2. */ | |
1104 | while (bc_l > 0 | |
1105 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1106 | bc_l--; | |
1107 | ||
876fa593 JK |
1108 | /* Now do full processing of the found relevant range of elements. */ |
1109 | ||
1110 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1111 | { |
35df4500 | 1112 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1113 | CORE_ADDR bp_addr = 0; |
1114 | int bp_size = 0; | |
1115 | int bptoffset = 0; | |
1116 | ||
35df4500 TJB |
1117 | /* bp_location array has BL->OWNER always non-NULL. */ |
1118 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1119 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1120 | bl->owner->number); |
ffce0d52 | 1121 | |
e5dd4106 | 1122 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1123 | content. */ |
1124 | ||
35df4500 TJB |
1125 | if (bl->address >= bp_location_placed_address_before_address_max |
1126 | && memaddr + len <= (bl->address | |
1127 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1128 | break; |
1129 | ||
35df4500 | 1130 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1131 | continue; |
35df4500 | 1132 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1133 | current_program_space->aspace, 0)) |
1134 | continue; | |
1135 | ||
c5aa993b JM |
1136 | /* Addresses and length of the part of the breakpoint that |
1137 | we need to copy. */ | |
35df4500 TJB |
1138 | bp_addr = bl->target_info.placed_address; |
1139 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1140 | |
c5aa993b JM |
1141 | if (bp_addr + bp_size <= memaddr) |
1142 | /* The breakpoint is entirely before the chunk of memory we | |
1143 | are reading. */ | |
1144 | continue; | |
8defab1a | 1145 | |
c5aa993b JM |
1146 | if (bp_addr >= memaddr + len) |
1147 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1148 | reading. */ |
c5aa993b | 1149 | continue; |
c5aa993b | 1150 | |
8defab1a DJ |
1151 | /* Offset within shadow_contents. */ |
1152 | if (bp_addr < memaddr) | |
1153 | { | |
1154 | /* Only copy the second part of the breakpoint. */ | |
1155 | bp_size -= memaddr - bp_addr; | |
1156 | bptoffset = memaddr - bp_addr; | |
1157 | bp_addr = memaddr; | |
1158 | } | |
c5aa993b | 1159 | |
8defab1a DJ |
1160 | if (bp_addr + bp_size > memaddr + len) |
1161 | { | |
1162 | /* Only copy the first part of the breakpoint. */ | |
1163 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1164 | } | |
c5aa993b | 1165 | |
f0ba3972 PA |
1166 | if (readbuf != NULL) |
1167 | { | |
1168 | /* Update the read buffer with this inserted breakpoint's | |
1169 | shadow. */ | |
1170 | memcpy (readbuf + bp_addr - memaddr, | |
1171 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | struct gdbarch *gdbarch = bl->gdbarch; | |
1176 | const unsigned char *bp; | |
1177 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1178 | unsigned placed_size = bl->target_info.placed_size; | |
1179 | ||
1180 | /* Update the shadow with what we want to write to memory. */ | |
1181 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1182 | writebuf_org + bp_addr - memaddr, bp_size); | |
1183 | ||
1184 | /* Determine appropriate breakpoint contents and size for this | |
1185 | address. */ | |
1186 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1187 | ||
1188 | /* Update the final write buffer with this inserted | |
1189 | breakpoint's INSN. */ | |
1190 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1191 | } | |
c5aa993b | 1192 | } |
c906108c | 1193 | } |
c906108c | 1194 | \f |
c5aa993b | 1195 | |
60e1c644 PA |
1196 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1197 | ||
a5606eee | 1198 | static int |
d77f58be | 1199 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1200 | { |
1201 | return (bpt->type == bp_hardware_watchpoint | |
1202 | || bpt->type == bp_read_watchpoint | |
1203 | || bpt->type == bp_access_watchpoint); | |
1204 | } | |
7270d8f2 | 1205 | |
60e1c644 PA |
1206 | /* Return true if BPT is of any watchpoint kind, hardware or |
1207 | software. */ | |
1208 | ||
3a5c3e22 | 1209 | int |
d77f58be | 1210 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1211 | { |
1212 | return (is_hardware_watchpoint (bpt) | |
1213 | || bpt->type == bp_watchpoint); | |
1214 | } | |
1215 | ||
3a5c3e22 PA |
1216 | /* Returns true if the current thread and its running state are safe |
1217 | to evaluate or update watchpoint B. Watchpoints on local | |
1218 | expressions need to be evaluated in the context of the thread that | |
1219 | was current when the watchpoint was created, and, that thread needs | |
1220 | to be stopped to be able to select the correct frame context. | |
1221 | Watchpoints on global expressions can be evaluated on any thread, | |
1222 | and in any state. It is presently left to the target allowing | |
1223 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1224 | |
1225 | static int | |
3a5c3e22 | 1226 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 PA |
1227 | { |
1228 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1229 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1230 | && !is_executing (inferior_ptid))); | |
1231 | } | |
1232 | ||
d0fb5eae JK |
1233 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1234 | associated bp_watchpoint_scope breakpoint. */ | |
1235 | ||
1236 | static void | |
3a5c3e22 | 1237 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1238 | { |
3a5c3e22 | 1239 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1240 | |
1241 | if (b->related_breakpoint != b) | |
1242 | { | |
1243 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1244 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1245 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1246 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1247 | b->related_breakpoint = b; | |
1248 | } | |
1249 | b->disposition = disp_del_at_next_stop; | |
1250 | } | |
1251 | ||
567e1b4e JB |
1252 | /* Assuming that B is a watchpoint: |
1253 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1254 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1255 | - Evaluate the condition if there is one, and store the result |
1256 | in b->loc->cond. | |
a5606eee VP |
1257 | - Update the list of values that must be watched in B->loc. |
1258 | ||
4a64f543 MS |
1259 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1260 | nothing. If this is local watchpoint that is out of scope, delete | |
1261 | it. | |
1262 | ||
1263 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1264 | removed + inserted on each stop here. Normal breakpoints must | |
1265 | never be removed because they might be missed by a running thread | |
1266 | when debugging in non-stop mode. On the other hand, hardware | |
1267 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1268 | to each LWP since they are stored in each LWP's hardware debug | |
1269 | registers. Therefore, such LWP must be stopped first in order to | |
1270 | be able to modify its hardware watchpoints. | |
1271 | ||
1272 | Hardware watchpoints must be reset exactly once after being | |
1273 | presented to the user. It cannot be done sooner, because it would | |
1274 | reset the data used to present the watchpoint hit to the user. And | |
1275 | it must not be done later because it could display the same single | |
1276 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1277 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1278 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1279 | not user-visible - its hit is suppressed if the memory content has | |
1280 | not changed. | |
1281 | ||
1282 | The following constraints influence the location where we can reset | |
1283 | hardware watchpoints: | |
1284 | ||
1285 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1286 | called several times when GDB stops. | |
1287 | ||
1288 | [linux] | |
1289 | * Multiple hardware watchpoints can be hit at the same time, | |
1290 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1291 | hit at a time as the reason for stopping, and all the other hits | |
1292 | are presented later, one after the other, each time the user | |
1293 | requests the execution to be resumed. Execution is not resumed | |
1294 | for the threads still having pending hit event stored in | |
1295 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1296 | the inferior on the first stop the thread hit event is kept being | |
1297 | reported from its cached value by linux_nat_stopped_data_address | |
1298 | until the real thread resume happens after the watchpoint gets | |
1299 | presented and thus its LWP_INFO->STATUS gets reset. | |
1300 | ||
1301 | Therefore the hardware watchpoint hit can get safely reset on the | |
1302 | watchpoint removal from inferior. */ | |
a79d3c27 | 1303 | |
b40ce68a | 1304 | static void |
3a5c3e22 | 1305 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1306 | { |
a5606eee | 1307 | int within_current_scope; |
a5606eee | 1308 | struct frame_id saved_frame_id; |
66076460 | 1309 | int frame_saved; |
a5606eee | 1310 | |
f6bc2008 PA |
1311 | /* If this is a local watchpoint, we only want to check if the |
1312 | watchpoint frame is in scope if the current thread is the thread | |
1313 | that was used to create the watchpoint. */ | |
1314 | if (!watchpoint_in_thread_scope (b)) | |
1315 | return; | |
1316 | ||
3a5c3e22 | 1317 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1318 | return; |
1319 | ||
66076460 | 1320 | frame_saved = 0; |
a5606eee VP |
1321 | |
1322 | /* Determine if the watchpoint is within scope. */ | |
1323 | if (b->exp_valid_block == NULL) | |
1324 | within_current_scope = 1; | |
1325 | else | |
1326 | { | |
b5db5dfc UW |
1327 | struct frame_info *fi = get_current_frame (); |
1328 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1329 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1330 | ||
1331 | /* If we're in a function epilogue, unwinding may not work | |
1332 | properly, so do not attempt to recreate locations at this | |
1333 | point. See similar comments in watchpoint_check. */ | |
1334 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1335 | return; | |
66076460 DJ |
1336 | |
1337 | /* Save the current frame's ID so we can restore it after | |
1338 | evaluating the watchpoint expression on its own frame. */ | |
1339 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1340 | took a frame parameter, so that we didn't have to change the | |
1341 | selected frame. */ | |
1342 | frame_saved = 1; | |
1343 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1344 | ||
a5606eee VP |
1345 | fi = frame_find_by_id (b->watchpoint_frame); |
1346 | within_current_scope = (fi != NULL); | |
1347 | if (within_current_scope) | |
1348 | select_frame (fi); | |
1349 | } | |
1350 | ||
b5db5dfc UW |
1351 | /* We don't free locations. They are stored in the bp_location array |
1352 | and update_global_location_list will eventually delete them and | |
1353 | remove breakpoints if needed. */ | |
3a5c3e22 | 1354 | b->base.loc = NULL; |
b5db5dfc | 1355 | |
a5606eee VP |
1356 | if (within_current_scope && reparse) |
1357 | { | |
1358 | char *s; | |
d63d0675 | 1359 | |
a5606eee VP |
1360 | if (b->exp) |
1361 | { | |
1362 | xfree (b->exp); | |
1363 | b->exp = NULL; | |
1364 | } | |
d63d0675 | 1365 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1366 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1367 | /* If the meaning of expression itself changed, the old value is | |
1368 | no longer relevant. We don't want to report a watchpoint hit | |
1369 | to the user when the old value and the new value may actually | |
1370 | be completely different objects. */ | |
1371 | value_free (b->val); | |
fa4727a6 DJ |
1372 | b->val = NULL; |
1373 | b->val_valid = 0; | |
60e1c644 PA |
1374 | |
1375 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1376 | expression is stored in the breakpoint object, not in the | |
1377 | locations (re)created below. */ | |
3a5c3e22 | 1378 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1379 | { |
1380 | if (b->cond_exp != NULL) | |
1381 | { | |
1382 | xfree (b->cond_exp); | |
1383 | b->cond_exp = NULL; | |
1384 | } | |
1385 | ||
3a5c3e22 | 1386 | s = b->base.cond_string; |
60e1c644 PA |
1387 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); |
1388 | } | |
a5606eee | 1389 | } |
a5606eee VP |
1390 | |
1391 | /* If we failed to parse the expression, for example because | |
1392 | it refers to a global variable in a not-yet-loaded shared library, | |
1393 | don't try to insert watchpoint. We don't automatically delete | |
1394 | such watchpoint, though, since failure to parse expression | |
1395 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1396 | if ( !target_has_execution) |
1397 | { | |
1398 | /* Without execution, memory can't change. No use to try and | |
1399 | set watchpoint locations. The watchpoint will be reset when | |
1400 | the target gains execution, through breakpoint_re_set. */ | |
1401 | } | |
1402 | else if (within_current_scope && b->exp) | |
a5606eee | 1403 | { |
0cf6dd15 | 1404 | int pc = 0; |
fa4727a6 | 1405 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1406 | struct program_space *frame_pspace; |
a5606eee | 1407 | |
0cf6dd15 | 1408 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1409 | |
a5606eee VP |
1410 | /* Avoid setting b->val if it's already set. The meaning of |
1411 | b->val is 'the last value' user saw, and we should update | |
1412 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1413 | happens, the code that reports it updates b->val directly. |
1414 | We don't keep track of the memory value for masked | |
1415 | watchpoints. */ | |
3a5c3e22 | 1416 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1417 | { |
1418 | b->val = v; | |
1419 | b->val_valid = 1; | |
1420 | } | |
a5606eee | 1421 | |
2d134ed3 PA |
1422 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1423 | ||
a5606eee | 1424 | /* Look at each value on the value chain. */ |
9fa40276 | 1425 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1426 | { |
1427 | /* If it's a memory location, and GDB actually needed | |
1428 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1429 | must watch it. If the first value returned is |
1430 | still lazy, that means an error occurred reading it; | |
1431 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1432 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1433 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1434 | { |
1435 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1436 | |
a5606eee VP |
1437 | /* We only watch structs and arrays if user asked |
1438 | for it explicitly, never if they just happen to | |
1439 | appear in the middle of some value chain. */ | |
fa4727a6 | 1440 | if (v == result |
a5606eee VP |
1441 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1442 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1443 | { | |
1444 | CORE_ADDR addr; | |
1445 | int len, type; | |
1446 | struct bp_location *loc, **tmp; | |
1447 | ||
42ae5230 | 1448 | addr = value_address (v); |
a5606eee VP |
1449 | len = TYPE_LENGTH (value_type (v)); |
1450 | type = hw_write; | |
3a5c3e22 | 1451 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1452 | type = hw_read; |
3a5c3e22 | 1453 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1454 | type = hw_access; |
3a5c3e22 PA |
1455 | |
1456 | loc = allocate_bp_location (&b->base); | |
1457 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1458 | ; |
1459 | *tmp = loc; | |
a6d9a66e | 1460 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1461 | |
1462 | loc->pspace = frame_pspace; | |
a5606eee VP |
1463 | loc->address = addr; |
1464 | loc->length = len; | |
1465 | loc->watchpoint_type = type; | |
1466 | } | |
1467 | } | |
9fa40276 TJB |
1468 | } |
1469 | ||
1470 | /* Change the type of breakpoint between hardware assisted or | |
1471 | an ordinary watchpoint depending on the hardware support | |
1472 | and free hardware slots. REPARSE is set when the inferior | |
1473 | is started. */ | |
a9634178 | 1474 | if (reparse) |
9fa40276 | 1475 | { |
e09342b5 | 1476 | int reg_cnt; |
9fa40276 TJB |
1477 | enum bp_loc_type loc_type; |
1478 | struct bp_location *bl; | |
a5606eee | 1479 | |
a9634178 | 1480 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1481 | |
1482 | if (reg_cnt) | |
9fa40276 TJB |
1483 | { |
1484 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1485 | enum bptype type; |
9fa40276 | 1486 | |
a9634178 TJB |
1487 | /* Use an exact watchpoint when there's only one memory region to be |
1488 | watched, and only one debug register is needed to watch it. */ | |
1489 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1490 | ||
9fa40276 | 1491 | /* We need to determine how many resources are already |
e09342b5 TJB |
1492 | used for all other hardware watchpoints plus this one |
1493 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1494 | this watchpoint in as well. */ |
1495 | ||
1496 | /* If this is a software watchpoint, we try to turn it | |
1497 | to a hardware one -- count resources as if B was of | |
1498 | hardware watchpoint type. */ | |
1499 | type = b->base.type; | |
1500 | if (type == bp_watchpoint) | |
1501 | type = bp_hardware_watchpoint; | |
1502 | ||
1503 | /* This watchpoint may or may not have been placed on | |
1504 | the list yet at this point (it won't be in the list | |
1505 | if we're trying to create it for the first time, | |
1506 | through watch_command), so always account for it | |
1507 | manually. */ | |
1508 | ||
1509 | /* Count resources used by all watchpoints except B. */ | |
1510 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1511 | ||
1512 | /* Add in the resources needed for B. */ | |
1513 | i += hw_watchpoint_use_count (&b->base); | |
1514 | ||
1515 | target_resources_ok | |
1516 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1517 | if (target_resources_ok <= 0) |
a9634178 | 1518 | { |
3a5c3e22 | 1519 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1520 | |
1521 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1522 | error (_("Target does not support this type of " |
1523 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1524 | else if (target_resources_ok < 0 && !sw_mode) |
1525 | error (_("There are not enough available hardware " | |
1526 | "resources for this watchpoint.")); | |
a1398e0c PA |
1527 | |
1528 | /* Downgrade to software watchpoint. */ | |
1529 | b->base.type = bp_watchpoint; | |
1530 | } | |
1531 | else | |
1532 | { | |
1533 | /* If this was a software watchpoint, we've just | |
1534 | found we have enough resources to turn it to a | |
1535 | hardware watchpoint. Otherwise, this is a | |
1536 | nop. */ | |
1537 | b->base.type = type; | |
a9634178 | 1538 | } |
9fa40276 | 1539 | } |
3a5c3e22 | 1540 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1541 | error (_("Expression cannot be implemented with " |
1542 | "read/access watchpoint.")); | |
9fa40276 | 1543 | else |
3a5c3e22 | 1544 | b->base.type = bp_watchpoint; |
9fa40276 | 1545 | |
3a5c3e22 | 1546 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1547 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1548 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1549 | bl->loc_type = loc_type; |
1550 | } | |
1551 | ||
1552 | for (v = val_chain; v; v = next) | |
1553 | { | |
a5606eee VP |
1554 | next = value_next (v); |
1555 | if (v != b->val) | |
1556 | value_free (v); | |
1557 | } | |
1558 | ||
c7437ca6 PA |
1559 | /* If a software watchpoint is not watching any memory, then the |
1560 | above left it without any location set up. But, | |
1561 | bpstat_stop_status requires a location to be able to report | |
1562 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1563 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1564 | { |
3a5c3e22 PA |
1565 | struct breakpoint *base = &b->base; |
1566 | base->loc = allocate_bp_location (base); | |
1567 | base->loc->pspace = frame_pspace; | |
1568 | base->loc->address = -1; | |
1569 | base->loc->length = -1; | |
1570 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1571 | } |
a5606eee VP |
1572 | } |
1573 | else if (!within_current_scope) | |
7270d8f2 | 1574 | { |
ac74f770 MS |
1575 | printf_filtered (_("\ |
1576 | Watchpoint %d deleted because the program has left the block\n\ | |
1577 | in which its expression is valid.\n"), | |
3a5c3e22 | 1578 | b->base.number); |
d0fb5eae | 1579 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1580 | } |
a5606eee VP |
1581 | |
1582 | /* Restore the selected frame. */ | |
66076460 DJ |
1583 | if (frame_saved) |
1584 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1585 | } |
1586 | ||
a5606eee | 1587 | |
74960c60 | 1588 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1589 | inserted in the inferior. We don't differentiate the type of BL's owner |
1590 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1591 | breakpoint_ops is not defined, because in insert_bp_location, | |
1592 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1593 | static int |
35df4500 | 1594 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1595 | { |
35df4500 | 1596 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1597 | return 0; |
1598 | ||
35df4500 | 1599 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1600 | return 0; |
1601 | ||
35df4500 | 1602 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1603 | return 0; |
1604 | ||
f8eba3c6 TT |
1605 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1606 | return 0; | |
1607 | ||
56710373 PA |
1608 | /* This is set for example, when we're attached to the parent of a |
1609 | vfork, and have detached from the child. The child is running | |
1610 | free, and we expect it to do an exec or exit, at which point the | |
1611 | OS makes the parent schedulable again (and the target reports | |
1612 | that the vfork is done). Until the child is done with the shared | |
1613 | memory region, do not insert breakpoints in the parent, otherwise | |
1614 | the child could still trip on the parent's breakpoints. Since | |
1615 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1616 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1617 | return 0; |
1618 | ||
74960c60 VP |
1619 | return 1; |
1620 | } | |
1621 | ||
934709f0 PW |
1622 | /* Same as should_be_inserted but does the check assuming |
1623 | that the location is not duplicated. */ | |
1624 | ||
1625 | static int | |
1626 | unduplicated_should_be_inserted (struct bp_location *bl) | |
1627 | { | |
1628 | int result; | |
1629 | const int save_duplicate = bl->duplicate; | |
1630 | ||
1631 | bl->duplicate = 0; | |
1632 | result = should_be_inserted (bl); | |
1633 | bl->duplicate = save_duplicate; | |
1634 | return result; | |
1635 | } | |
1636 | ||
35df4500 TJB |
1637 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1638 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 1639 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
1640 | Returns 0 for success, 1 if the bp_location type is not supported or |
1641 | -1 for failure. | |
879bfdc2 | 1642 | |
4a64f543 MS |
1643 | NOTE drow/2003-09-09: This routine could be broken down to an |
1644 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1645 | static int |
35df4500 | 1646 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1647 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 1648 | int *disabled_breaks, |
26bb91f3 | 1649 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1650 | { |
1651 | int val = 0; | |
1652 | ||
35df4500 | 1653 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1654 | return 0; |
1655 | ||
8181d85f | 1656 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1657 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1658 | bl->target_info.placed_address = bl->address; | |
1659 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1660 | bl->target_info.length = bl->length; |
8181d85f | 1661 | |
35df4500 TJB |
1662 | if (bl->loc_type == bp_loc_software_breakpoint |
1663 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1664 | { |
35df4500 | 1665 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1666 | { |
1667 | /* If the explicitly specified breakpoint type | |
1668 | is not hardware breakpoint, check the memory map to see | |
1669 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1670 | |
765dc015 VP |
1671 | Two important cases are: |
1672 | - location type is not hardware breakpoint, memory | |
1673 | is readonly. We change the type of the location to | |
1674 | hardware breakpoint. | |
4a64f543 MS |
1675 | - location type is hardware breakpoint, memory is |
1676 | read-write. This means we've previously made the | |
1677 | location hardware one, but then the memory map changed, | |
1678 | so we undo. | |
765dc015 | 1679 | |
4a64f543 MS |
1680 | When breakpoints are removed, remove_breakpoints will use |
1681 | location types we've just set here, the only possible | |
1682 | problem is that memory map has changed during running | |
1683 | program, but it's not going to work anyway with current | |
1684 | gdb. */ | |
765dc015 | 1685 | struct mem_region *mr |
35df4500 | 1686 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1687 | |
1688 | if (mr) | |
1689 | { | |
1690 | if (automatic_hardware_breakpoints) | |
1691 | { | |
765dc015 VP |
1692 | enum bp_loc_type new_type; |
1693 | ||
1694 | if (mr->attrib.mode != MEM_RW) | |
1695 | new_type = bp_loc_hardware_breakpoint; | |
1696 | else | |
1697 | new_type = bp_loc_software_breakpoint; | |
1698 | ||
35df4500 | 1699 | if (new_type != bl->loc_type) |
765dc015 VP |
1700 | { |
1701 | static int said = 0; | |
cc59ec59 | 1702 | |
35df4500 | 1703 | bl->loc_type = new_type; |
765dc015 VP |
1704 | if (!said) |
1705 | { | |
3e43a32a MS |
1706 | fprintf_filtered (gdb_stdout, |
1707 | _("Note: automatically using " | |
1708 | "hardware breakpoints for " | |
1709 | "read-only addresses.\n")); | |
765dc015 VP |
1710 | said = 1; |
1711 | } | |
1712 | } | |
1713 | } | |
35df4500 | 1714 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1715 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1716 | warning (_("cannot set software breakpoint " |
1717 | "at readonly address %s"), | |
35df4500 | 1718 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1719 | } |
1720 | } | |
1721 | ||
879bfdc2 DJ |
1722 | /* First check to see if we have to handle an overlay. */ |
1723 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1724 | || bl->section == NULL |
1725 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1726 | { |
1727 | /* No overlay handling: just set the breakpoint. */ | |
1728 | ||
348d480f | 1729 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1730 | } |
1731 | else | |
1732 | { | |
4a64f543 | 1733 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1734 | Shall we set a breakpoint at the LMA? */ |
1735 | if (!overlay_events_enabled) | |
1736 | { | |
1737 | /* Yes -- overlay event support is not active, | |
1738 | so we must try to set a breakpoint at the LMA. | |
1739 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1740 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1741 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1742 | bl->owner->number); |
879bfdc2 DJ |
1743 | else |
1744 | { | |
35df4500 TJB |
1745 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1746 | bl->section); | |
879bfdc2 | 1747 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1748 | bl->overlay_target_info = bl->target_info; |
1749 | bl->overlay_target_info.placed_address = addr; | |
1750 | val = target_insert_breakpoint (bl->gdbarch, | |
1751 | &bl->overlay_target_info); | |
879bfdc2 | 1752 | if (val != 0) |
99361f52 | 1753 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1754 | "Overlay breakpoint %d " |
1755 | "failed: in ROM?\n", | |
35df4500 | 1756 | bl->owner->number); |
879bfdc2 DJ |
1757 | } |
1758 | } | |
1759 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1760 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1761 | { |
1762 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 1763 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1764 | } |
1765 | else | |
1766 | { | |
1767 | /* No. This breakpoint will not be inserted. | |
1768 | No error, but do not mark the bp as 'inserted'. */ | |
1769 | return 0; | |
1770 | } | |
1771 | } | |
1772 | ||
1773 | if (val) | |
1774 | { | |
1775 | /* Can't set the breakpoint. */ | |
35df4500 | 1776 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1777 | { |
4a64f543 | 1778 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1779 | val = 0; |
35df4500 | 1780 | bl->shlib_disabled = 1; |
8d3788bd | 1781 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
1782 | if (!*disabled_breaks) |
1783 | { | |
1784 | fprintf_unfiltered (tmp_error_stream, | |
1785 | "Cannot insert breakpoint %d.\n", | |
1786 | bl->owner->number); | |
1787 | fprintf_unfiltered (tmp_error_stream, | |
1788 | "Temporarily disabling shared " | |
1789 | "library breakpoints:\n"); | |
1790 | } | |
1791 | *disabled_breaks = 1; | |
879bfdc2 | 1792 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 1793 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1794 | } |
1795 | else | |
879bfdc2 | 1796 | { |
35df4500 | 1797 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1798 | { |
1799 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1800 | fprintf_unfiltered (tmp_error_stream, |
1801 | "Cannot insert hardware " | |
1802 | "breakpoint %d.\n", | |
35df4500 | 1803 | bl->owner->number); |
879bfdc2 DJ |
1804 | } |
1805 | else | |
1806 | { | |
1807 | fprintf_unfiltered (tmp_error_stream, | |
1808 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1809 | bl->owner->number); |
879bfdc2 DJ |
1810 | fprintf_filtered (tmp_error_stream, |
1811 | "Error accessing memory address "); | |
35df4500 | 1812 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1813 | tmp_error_stream); |
879bfdc2 DJ |
1814 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1815 | safe_strerror (val)); | |
1816 | } | |
1817 | ||
1818 | } | |
1819 | } | |
1820 | else | |
35df4500 | 1821 | bl->inserted = 1; |
879bfdc2 DJ |
1822 | |
1823 | return val; | |
1824 | } | |
1825 | ||
35df4500 | 1826 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1827 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1828 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1829 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1830 | { |
77b06cd7 TJB |
1831 | gdb_assert (bl->owner->ops != NULL |
1832 | && bl->owner->ops->insert_location != NULL); | |
1833 | ||
1834 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1835 | |
1836 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1837 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1838 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1839 | { |
1840 | struct bp_location *loc, **loc_temp; | |
1841 | ||
1842 | /* But don't try to insert it, if there's already another | |
1843 | hw_access location that would be considered a duplicate | |
1844 | of this one. */ | |
1845 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1846 | if (loc != bl |
85d721b8 | 1847 | && loc->watchpoint_type == hw_access |
35df4500 | 1848 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1849 | { |
35df4500 TJB |
1850 | bl->duplicate = 1; |
1851 | bl->inserted = 1; | |
1852 | bl->target_info = loc->target_info; | |
1853 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1854 | val = 0; |
1855 | break; | |
1856 | } | |
1857 | ||
1858 | if (val == 1) | |
1859 | { | |
77b06cd7 TJB |
1860 | bl->watchpoint_type = hw_access; |
1861 | val = bl->owner->ops->insert_location (bl); | |
1862 | ||
1863 | if (val) | |
1864 | /* Back to the original value. */ | |
1865 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1866 | } |
1867 | } | |
1868 | ||
35df4500 | 1869 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1870 | } |
1871 | ||
35df4500 | 1872 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1873 | { |
77b06cd7 TJB |
1874 | gdb_assert (bl->owner->ops != NULL |
1875 | && bl->owner->ops->insert_location != NULL); | |
1876 | ||
1877 | val = bl->owner->ops->insert_location (bl); | |
1878 | if (val) | |
1879 | { | |
1880 | bl->owner->enable_state = bp_disabled; | |
1881 | ||
1882 | if (val == 1) | |
1883 | warning (_("\ | |
1884 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1885 | of catchpoint."), bl->owner->number); | |
1886 | else | |
1887 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1888 | } | |
1889 | ||
1890 | bl->inserted = (val == 0); | |
1640b821 DJ |
1891 | |
1892 | /* We've already printed an error message if there was a problem | |
1893 | inserting this catchpoint, and we've disabled the catchpoint, | |
1894 | so just return success. */ | |
1895 | return 0; | |
879bfdc2 DJ |
1896 | } |
1897 | ||
1898 | return 0; | |
1899 | } | |
1900 | ||
6c95b8df PA |
1901 | /* This function is called when program space PSPACE is about to be |
1902 | deleted. It takes care of updating breakpoints to not reference | |
1903 | PSPACE anymore. */ | |
1904 | ||
1905 | void | |
1906 | breakpoint_program_space_exit (struct program_space *pspace) | |
1907 | { | |
1908 | struct breakpoint *b, *b_temp; | |
876fa593 | 1909 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1910 | |
1911 | /* Remove any breakpoint that was set through this program space. */ | |
1912 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1913 | { | |
1914 | if (b->pspace == pspace) | |
1915 | delete_breakpoint (b); | |
1916 | } | |
1917 | ||
1918 | /* Breakpoints set through other program spaces could have locations | |
1919 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1920 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1921 | { |
1922 | struct bp_location *tmp; | |
1923 | ||
1924 | if (loc->pspace == pspace) | |
1925 | { | |
2bdf28a0 | 1926 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1927 | if (loc->owner->loc == loc) |
1928 | loc->owner->loc = loc->next; | |
1929 | else | |
1930 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1931 | if (tmp->next == loc) | |
1932 | { | |
1933 | tmp->next = loc->next; | |
1934 | break; | |
1935 | } | |
1936 | } | |
1937 | } | |
1938 | ||
1939 | /* Now update the global location list to permanently delete the | |
1940 | removed locations above. */ | |
1941 | update_global_location_list (0); | |
1942 | } | |
1943 | ||
74960c60 VP |
1944 | /* Make sure all breakpoints are inserted in inferior. |
1945 | Throws exception on any error. | |
1946 | A breakpoint that is already inserted won't be inserted | |
1947 | again, so calling this function twice is safe. */ | |
1948 | void | |
1949 | insert_breakpoints (void) | |
1950 | { | |
1951 | struct breakpoint *bpt; | |
1952 | ||
1953 | ALL_BREAKPOINTS (bpt) | |
1954 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
1955 | { |
1956 | struct watchpoint *w = (struct watchpoint *) bpt; | |
1957 | ||
1958 | update_watchpoint (w, 0 /* don't reparse. */); | |
1959 | } | |
74960c60 | 1960 | |
b60e7edf | 1961 | update_global_location_list (1); |
74960c60 | 1962 | |
c35b1492 PA |
1963 | /* update_global_location_list does not insert breakpoints when |
1964 | always_inserted_mode is not enabled. Explicitly insert them | |
1965 | now. */ | |
1966 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1967 | insert_breakpoint_locations (); |
1968 | } | |
1969 | ||
c30eee59 | 1970 | /* Used when starting or continuing the program. */ |
c906108c | 1971 | |
74960c60 VP |
1972 | static void |
1973 | insert_breakpoint_locations (void) | |
c906108c | 1974 | { |
a5606eee | 1975 | struct breakpoint *bpt; |
35df4500 | 1976 | struct bp_location *bl, **blp_tmp; |
eacd795a | 1977 | int error_flag = 0; |
c906108c | 1978 | int val = 0; |
3fbb6ffa | 1979 | int disabled_breaks = 0; |
81d0cc19 | 1980 | int hw_breakpoint_error = 0; |
c906108c | 1981 | |
81d0cc19 | 1982 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1983 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1984 | |
81d0cc19 GS |
1985 | /* Explicitly mark the warning -- this will only be printed if |
1986 | there was an error. */ | |
1987 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1988 | |
1989 | save_current_space_and_thread (); | |
1990 | ||
35df4500 | 1991 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1992 | { |
35df4500 | 1993 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1994 | continue; |
1995 | ||
4a64f543 MS |
1996 | /* There is no point inserting thread-specific breakpoints if |
1997 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1998 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1999 | if (bl->owner->thread != -1 |
2000 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2001 | continue; |
2002 | ||
35df4500 | 2003 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2004 | |
2005 | /* For targets that support global breakpoints, there's no need | |
2006 | to select an inferior to insert breakpoint to. In fact, even | |
2007 | if we aren't attached to any process yet, we should still | |
2008 | insert breakpoints. */ | |
2009 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2010 | && ptid_equal (inferior_ptid, null_ptid)) | |
2011 | continue; | |
2012 | ||
3fbb6ffa TJB |
2013 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
2014 | &hw_breakpoint_error); | |
879bfdc2 | 2015 | if (val) |
eacd795a | 2016 | error_flag = val; |
879bfdc2 | 2017 | } |
c906108c | 2018 | |
4a64f543 MS |
2019 | /* If we failed to insert all locations of a watchpoint, remove |
2020 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2021 | ALL_BREAKPOINTS (bpt) |
2022 | { | |
2023 | int some_failed = 0; | |
2024 | struct bp_location *loc; | |
2025 | ||
2026 | if (!is_hardware_watchpoint (bpt)) | |
2027 | continue; | |
2028 | ||
d6b74ac4 | 2029 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2030 | continue; |
74960c60 VP |
2031 | |
2032 | if (bpt->disposition == disp_del_at_next_stop) | |
2033 | continue; | |
a5606eee VP |
2034 | |
2035 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2036 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2037 | { |
2038 | some_failed = 1; | |
2039 | break; | |
2040 | } | |
2041 | if (some_failed) | |
2042 | { | |
2043 | for (loc = bpt->loc; loc; loc = loc->next) | |
2044 | if (loc->inserted) | |
2045 | remove_breakpoint (loc, mark_uninserted); | |
2046 | ||
2047 | hw_breakpoint_error = 1; | |
2048 | fprintf_unfiltered (tmp_error_stream, | |
2049 | "Could not insert hardware watchpoint %d.\n", | |
2050 | bpt->number); | |
eacd795a | 2051 | error_flag = -1; |
a5606eee VP |
2052 | } |
2053 | } | |
2054 | ||
eacd795a | 2055 | if (error_flag) |
81d0cc19 GS |
2056 | { |
2057 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2058 | message about possibly exhausted resources. */ | |
879bfdc2 | 2059 | if (hw_breakpoint_error) |
81d0cc19 | 2060 | { |
c6510018 MS |
2061 | fprintf_unfiltered (tmp_error_stream, |
2062 | "Could not insert hardware breakpoints:\n\ | |
2063 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2064 | } |
81d0cc19 GS |
2065 | target_terminal_ours_for_output (); |
2066 | error_stream (tmp_error_stream); | |
2067 | } | |
f7545552 TT |
2068 | |
2069 | do_cleanups (cleanups); | |
c906108c SS |
2070 | } |
2071 | ||
c30eee59 TJB |
2072 | /* Used when the program stops. |
2073 | Returns zero if successful, or non-zero if there was a problem | |
2074 | removing a breakpoint location. */ | |
2075 | ||
c906108c | 2076 | int |
fba45db2 | 2077 | remove_breakpoints (void) |
c906108c | 2078 | { |
35df4500 | 2079 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2080 | int val = 0; |
c906108c | 2081 | |
35df4500 | 2082 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2083 | { |
1e4d1764 | 2084 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2085 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2086 | } |
3a1bae8e | 2087 | return val; |
c906108c SS |
2088 | } |
2089 | ||
6c95b8df PA |
2090 | /* Remove breakpoints of process PID. */ |
2091 | ||
2092 | int | |
2093 | remove_breakpoints_pid (int pid) | |
2094 | { | |
35df4500 | 2095 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2096 | int val; |
2097 | struct inferior *inf = find_inferior_pid (pid); | |
2098 | ||
35df4500 | 2099 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2100 | { |
35df4500 | 2101 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2102 | continue; |
2103 | ||
35df4500 | 2104 | if (bl->inserted) |
6c95b8df | 2105 | { |
35df4500 | 2106 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2107 | if (val != 0) |
2108 | return val; | |
2109 | } | |
2110 | } | |
2111 | return 0; | |
2112 | } | |
2113 | ||
c906108c | 2114 | int |
fba45db2 | 2115 | reattach_breakpoints (int pid) |
c906108c | 2116 | { |
6c95b8df | 2117 | struct cleanup *old_chain; |
35df4500 | 2118 | struct bp_location *bl, **blp_tmp; |
c906108c | 2119 | int val; |
86b887df | 2120 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2121 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2122 | struct inferior *inf; |
2123 | struct thread_info *tp; | |
2124 | ||
2125 | tp = any_live_thread_of_process (pid); | |
2126 | if (tp == NULL) | |
2127 | return 1; | |
2128 | ||
2129 | inf = find_inferior_pid (pid); | |
2130 | old_chain = save_inferior_ptid (); | |
2131 | ||
2132 | inferior_ptid = tp->ptid; | |
a4954f26 | 2133 | |
86b887df | 2134 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2135 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2136 | |
35df4500 | 2137 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2138 | { |
35df4500 | 2139 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2140 | continue; |
2141 | ||
35df4500 | 2142 | if (bl->inserted) |
c5aa993b | 2143 | { |
35df4500 | 2144 | bl->inserted = 0; |
3fbb6ffa | 2145 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2146 | if (val != 0) |
2147 | { | |
ce696e05 | 2148 | do_cleanups (old_chain); |
c5aa993b JM |
2149 | return val; |
2150 | } | |
2151 | } | |
2152 | } | |
ce696e05 | 2153 | do_cleanups (old_chain); |
c906108c SS |
2154 | return 0; |
2155 | } | |
2156 | ||
e58b0e63 PA |
2157 | static int internal_breakpoint_number = -1; |
2158 | ||
84f4c1fe PM |
2159 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2160 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2161 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2162 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2163 | breakpoint_count and that value incremented. Internal breakpoints |
2164 | do not set the internal var bpnum. */ | |
2165 | static void | |
2166 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2167 | { | |
2168 | if (internal) | |
2169 | b->number = internal_breakpoint_number--; | |
2170 | else | |
2171 | { | |
2172 | set_breakpoint_count (breakpoint_count + 1); | |
2173 | b->number = breakpoint_count; | |
2174 | } | |
2175 | } | |
2176 | ||
e62c965a | 2177 | static struct breakpoint * |
a6d9a66e | 2178 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2179 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2180 | const struct breakpoint_ops *ops) |
e62c965a | 2181 | { |
e62c965a PP |
2182 | struct symtab_and_line sal; |
2183 | struct breakpoint *b; | |
2184 | ||
4a64f543 | 2185 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2186 | |
2187 | sal.pc = address; | |
2188 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2189 | sal.pspace = current_program_space; |
e62c965a | 2190 | |
06edf0c0 | 2191 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2192 | b->number = internal_breakpoint_number--; |
2193 | b->disposition = disp_donttouch; | |
2194 | ||
2195 | return b; | |
2196 | } | |
2197 | ||
17450429 PP |
2198 | static const char *const longjmp_names[] = |
2199 | { | |
2200 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2201 | }; | |
2202 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2203 | ||
2204 | /* Per-objfile data private to breakpoint.c. */ | |
2205 | struct breakpoint_objfile_data | |
2206 | { | |
2207 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2208 | struct minimal_symbol *overlay_msym; | |
2209 | ||
2210 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2211 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2212 | ||
2213 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2214 | struct minimal_symbol *terminate_msym; | |
2215 | ||
2216 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2217 | struct minimal_symbol *exception_msym; | |
2218 | }; | |
2219 | ||
2220 | static const struct objfile_data *breakpoint_objfile_key; | |
2221 | ||
2222 | /* Minimal symbol not found sentinel. */ | |
2223 | static struct minimal_symbol msym_not_found; | |
2224 | ||
2225 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2226 | ||
2227 | static int | |
2228 | msym_not_found_p (const struct minimal_symbol *msym) | |
2229 | { | |
2230 | return msym == &msym_not_found; | |
2231 | } | |
2232 | ||
2233 | /* Return per-objfile data needed by breakpoint.c. | |
2234 | Allocate the data if necessary. */ | |
2235 | ||
2236 | static struct breakpoint_objfile_data * | |
2237 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2238 | { | |
2239 | struct breakpoint_objfile_data *bp_objfile_data; | |
2240 | ||
2241 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2242 | if (bp_objfile_data == NULL) | |
2243 | { | |
2244 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2245 | sizeof (*bp_objfile_data)); | |
2246 | ||
2247 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2248 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2249 | } | |
2250 | return bp_objfile_data; | |
2251 | } | |
2252 | ||
e62c965a | 2253 | static void |
af02033e | 2254 | create_overlay_event_breakpoint (void) |
e62c965a | 2255 | { |
69de3c6a | 2256 | struct objfile *objfile; |
af02033e | 2257 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2258 | |
69de3c6a PP |
2259 | ALL_OBJFILES (objfile) |
2260 | { | |
2261 | struct breakpoint *b; | |
17450429 PP |
2262 | struct breakpoint_objfile_data *bp_objfile_data; |
2263 | CORE_ADDR addr; | |
69de3c6a | 2264 | |
17450429 PP |
2265 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2266 | ||
2267 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2268 | continue; | |
2269 | ||
2270 | if (bp_objfile_data->overlay_msym == NULL) | |
2271 | { | |
2272 | struct minimal_symbol *m; | |
2273 | ||
2274 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2275 | if (m == NULL) | |
2276 | { | |
2277 | /* Avoid future lookups in this objfile. */ | |
2278 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2279 | continue; | |
2280 | } | |
2281 | bp_objfile_data->overlay_msym = m; | |
2282 | } | |
e62c965a | 2283 | |
17450429 PP |
2284 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2285 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2286 | bp_overlay_event, |
2287 | &internal_breakpoint_ops); | |
69de3c6a | 2288 | b->addr_string = xstrdup (func_name); |
e62c965a | 2289 | |
69de3c6a PP |
2290 | if (overlay_debugging == ovly_auto) |
2291 | { | |
2292 | b->enable_state = bp_enabled; | |
2293 | overlay_events_enabled = 1; | |
2294 | } | |
2295 | else | |
2296 | { | |
2297 | b->enable_state = bp_disabled; | |
2298 | overlay_events_enabled = 0; | |
2299 | } | |
e62c965a PP |
2300 | } |
2301 | update_global_location_list (1); | |
2302 | } | |
2303 | ||
0fd8e87f | 2304 | static void |
af02033e | 2305 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2306 | { |
6c95b8df | 2307 | struct program_space *pspace; |
6c95b8df PA |
2308 | struct cleanup *old_chain; |
2309 | ||
2310 | old_chain = save_current_program_space (); | |
0fd8e87f | 2311 | |
6c95b8df | 2312 | ALL_PSPACES (pspace) |
af02033e PP |
2313 | { |
2314 | struct objfile *objfile; | |
2315 | ||
2316 | set_current_program_space (pspace); | |
2317 | ||
2318 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2319 | { |
af02033e PP |
2320 | int i; |
2321 | struct gdbarch *gdbarch; | |
17450429 | 2322 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2323 | |
af02033e PP |
2324 | gdbarch = get_objfile_arch (objfile); |
2325 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2326 | continue; |
2327 | ||
17450429 PP |
2328 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2329 | ||
2330 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2331 | { |
2332 | struct breakpoint *b; | |
af02033e | 2333 | const char *func_name; |
17450429 | 2334 | CORE_ADDR addr; |
6c95b8df | 2335 | |
17450429 | 2336 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2337 | continue; |
0fd8e87f | 2338 | |
17450429 PP |
2339 | func_name = longjmp_names[i]; |
2340 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2341 | { | |
2342 | struct minimal_symbol *m; | |
2343 | ||
2344 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2345 | if (m == NULL) | |
2346 | { | |
2347 | /* Prevent future lookups in this objfile. */ | |
2348 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2349 | continue; | |
2350 | } | |
2351 | bp_objfile_data->longjmp_msym[i] = m; | |
2352 | } | |
2353 | ||
2354 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2355 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2356 | &internal_breakpoint_ops); | |
af02033e PP |
2357 | b->addr_string = xstrdup (func_name); |
2358 | b->enable_state = bp_disabled; | |
2359 | } | |
0fd8e87f | 2360 | } |
af02033e | 2361 | } |
0fd8e87f | 2362 | update_global_location_list (1); |
6c95b8df PA |
2363 | |
2364 | do_cleanups (old_chain); | |
0fd8e87f UW |
2365 | } |
2366 | ||
af02033e | 2367 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2368 | static void |
af02033e | 2369 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2370 | { |
2371 | struct program_space *pspace; | |
aa7d318d | 2372 | struct cleanup *old_chain; |
af02033e | 2373 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2374 | |
2375 | old_chain = save_current_program_space (); | |
2376 | ||
2377 | ALL_PSPACES (pspace) | |
17450429 PP |
2378 | { |
2379 | struct objfile *objfile; | |
2380 | CORE_ADDR addr; | |
2381 | ||
2382 | set_current_program_space (pspace); | |
2383 | ||
aa7d318d TT |
2384 | ALL_OBJFILES (objfile) |
2385 | { | |
2386 | struct breakpoint *b; | |
17450429 | 2387 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2388 | |
17450429 | 2389 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2390 | |
17450429 PP |
2391 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2392 | continue; | |
2393 | ||
2394 | if (bp_objfile_data->terminate_msym == NULL) | |
2395 | { | |
2396 | struct minimal_symbol *m; | |
2397 | ||
2398 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2399 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2400 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2401 | { | |
2402 | /* Prevent future lookups in this objfile. */ | |
2403 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2404 | continue; | |
2405 | } | |
2406 | bp_objfile_data->terminate_msym = m; | |
2407 | } | |
aa7d318d | 2408 | |
17450429 PP |
2409 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2410 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2411 | bp_std_terminate_master, |
2412 | &internal_breakpoint_ops); | |
aa7d318d TT |
2413 | b->addr_string = xstrdup (func_name); |
2414 | b->enable_state = bp_disabled; | |
2415 | } | |
17450429 PP |
2416 | } |
2417 | ||
aa7d318d TT |
2418 | update_global_location_list (1); |
2419 | ||
2420 | do_cleanups (old_chain); | |
2421 | } | |
2422 | ||
186c406b TT |
2423 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2424 | ||
2425 | void | |
2426 | create_exception_master_breakpoint (void) | |
2427 | { | |
2428 | struct objfile *objfile; | |
17450429 | 2429 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2430 | |
2431 | ALL_OBJFILES (objfile) | |
2432 | { | |
17450429 PP |
2433 | struct breakpoint *b; |
2434 | struct gdbarch *gdbarch; | |
2435 | struct breakpoint_objfile_data *bp_objfile_data; | |
2436 | CORE_ADDR addr; | |
2437 | ||
2438 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2439 | ||
2440 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2441 | continue; | |
2442 | ||
2443 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2444 | |
17450429 | 2445 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2446 | { |
17450429 | 2447 | struct minimal_symbol *debug_hook; |
186c406b | 2448 | |
17450429 PP |
2449 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2450 | if (debug_hook == NULL) | |
2451 | { | |
2452 | bp_objfile_data->exception_msym = &msym_not_found; | |
2453 | continue; | |
2454 | } | |
2455 | ||
2456 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2457 | } |
17450429 PP |
2458 | |
2459 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2460 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2461 | ¤t_target); | |
06edf0c0 PA |
2462 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
2463 | &internal_breakpoint_ops); | |
17450429 PP |
2464 | b->addr_string = xstrdup (func_name); |
2465 | b->enable_state = bp_disabled; | |
186c406b TT |
2466 | } |
2467 | ||
2468 | update_global_location_list (1); | |
2469 | } | |
2470 | ||
c906108c | 2471 | void |
fba45db2 | 2472 | update_breakpoints_after_exec (void) |
c906108c | 2473 | { |
35df4500 | 2474 | struct breakpoint *b, *b_tmp; |
876fa593 | 2475 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2476 | |
25b22b0a PA |
2477 | /* We're about to delete breakpoints from GDB's lists. If the |
2478 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2479 | writing the breakpoints' "shadow contents" back into memory. The | |
2480 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2481 | do that. Instead, the target is responsible from marking | |
2482 | breakpoints out as soon as it detects an exec. We don't do that | |
2483 | here instead, because there may be other attempts to delete | |
2484 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2485 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2486 | if (bploc->pspace == current_program_space) |
2487 | gdb_assert (!bploc->inserted); | |
c906108c | 2488 | |
35df4500 | 2489 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2490 | { |
6c95b8df PA |
2491 | if (b->pspace != current_program_space) |
2492 | continue; | |
2493 | ||
4a64f543 | 2494 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2495 | if (b->type == bp_shlib_event) |
2496 | { | |
2497 | delete_breakpoint (b); | |
2498 | continue; | |
2499 | } | |
c906108c | 2500 | |
4a64f543 | 2501 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2502 | if (b->type == bp_jit_event) |
2503 | { | |
2504 | delete_breakpoint (b); | |
2505 | continue; | |
2506 | } | |
2507 | ||
1900040c | 2508 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2509 | as must overlay event and longjmp master breakpoints. */ |
2510 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2511 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2512 | || b->type == bp_exception_master) | |
c4093a6a JM |
2513 | { |
2514 | delete_breakpoint (b); | |
2515 | continue; | |
2516 | } | |
2517 | ||
4a64f543 | 2518 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 2519 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
2520 | { |
2521 | delete_breakpoint (b); | |
2522 | continue; | |
2523 | } | |
2524 | ||
611c83ae PA |
2525 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2526 | after an exec. */ | |
186c406b TT |
2527 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2528 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2529 | { |
2530 | delete_breakpoint (b); | |
2531 | continue; | |
2532 | } | |
2533 | ||
ce78b96d JB |
2534 | if (b->type == bp_catchpoint) |
2535 | { | |
2536 | /* For now, none of the bp_catchpoint breakpoints need to | |
2537 | do anything at this point. In the future, if some of | |
2538 | the catchpoints need to something, we will need to add | |
2539 | a new method, and call this method from here. */ | |
2540 | continue; | |
2541 | } | |
2542 | ||
c5aa993b JM |
2543 | /* bp_finish is a special case. The only way we ought to be able |
2544 | to see one of these when an exec() has happened, is if the user | |
2545 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2546 | carries them to the call-site of the current callee, by setting | |
2547 | a temporary bp there and resuming. But in this case, the finish | |
2548 | will carry them entirely through the vfork & exec. | |
2549 | ||
2550 | We don't want to allow a bp_finish to remain inserted now. But | |
2551 | we can't safely delete it, 'cause finish_command has a handle to | |
2552 | the bp on a bpstat, and will later want to delete it. There's a | |
2553 | chance (and I've seen it happen) that if we delete the bp_finish | |
2554 | here, that its storage will get reused by the time finish_command | |
2555 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2556 | We really must allow finish_command to delete a bp_finish. | |
2557 | ||
e5dd4106 | 2558 | In the absence of a general solution for the "how do we know |
53a5351d JM |
2559 | it's safe to delete something others may have handles to?" |
2560 | problem, what we'll do here is just uninsert the bp_finish, and | |
2561 | let finish_command delete it. | |
2562 | ||
2563 | (We know the bp_finish is "doomed" in the sense that it's | |
2564 | momentary, and will be deleted as soon as finish_command sees | |
2565 | the inferior stopped. So it doesn't matter that the bp's | |
2566 | address is probably bogus in the new a.out, unlike e.g., the | |
2567 | solib breakpoints.) */ | |
c5aa993b | 2568 | |
c5aa993b JM |
2569 | if (b->type == bp_finish) |
2570 | { | |
2571 | continue; | |
2572 | } | |
2573 | ||
2574 | /* Without a symbolic address, we have little hope of the | |
2575 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2576 | a.out. */ |
c5aa993b JM |
2577 | if (b->addr_string == NULL) |
2578 | { | |
2579 | delete_breakpoint (b); | |
2580 | continue; | |
2581 | } | |
c5aa993b | 2582 | } |
1900040c | 2583 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2584 | create_overlay_event_breakpoint (); |
2585 | create_longjmp_master_breakpoint (); | |
2586 | create_std_terminate_master_breakpoint (); | |
186c406b | 2587 | create_exception_master_breakpoint (); |
c906108c SS |
2588 | } |
2589 | ||
2590 | int | |
fba45db2 | 2591 | detach_breakpoints (int pid) |
c906108c | 2592 | { |
35df4500 | 2593 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2594 | int val = 0; |
ce696e05 | 2595 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2596 | struct inferior *inf = current_inferior (); |
c5aa993b | 2597 | |
39f77062 | 2598 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2599 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2600 | |
6c95b8df | 2601 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2602 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2603 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2604 | { |
35df4500 | 2605 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2606 | continue; |
2607 | ||
35df4500 TJB |
2608 | if (bl->inserted) |
2609 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2610 | } |
d03285ec UW |
2611 | |
2612 | /* Detach single-step breakpoints as well. */ | |
2613 | detach_single_step_breakpoints (); | |
2614 | ||
ce696e05 | 2615 | do_cleanups (old_chain); |
3a1bae8e | 2616 | return val; |
c906108c SS |
2617 | } |
2618 | ||
35df4500 | 2619 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2620 | Note that this is used to detach breakpoints from a child fork. |
2621 | When we get here, the child isn't in the inferior list, and neither | |
2622 | do we have objects to represent its address space --- we should | |
35df4500 | 2623 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2624 | |
c906108c | 2625 | static int |
35df4500 | 2626 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2627 | { |
2628 | int val; | |
c5aa993b | 2629 | |
35df4500 TJB |
2630 | /* BL is never in moribund_locations by our callers. */ |
2631 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2632 | |
35df4500 | 2633 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2634 | /* Permanent breakpoints cannot be inserted or removed. */ |
2635 | return 0; | |
2636 | ||
74960c60 VP |
2637 | /* The type of none suggests that owner is actually deleted. |
2638 | This should not ever happen. */ | |
35df4500 | 2639 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2640 | |
35df4500 TJB |
2641 | if (bl->loc_type == bp_loc_software_breakpoint |
2642 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2643 | { |
c02f5703 MS |
2644 | /* "Normal" instruction breakpoint: either the standard |
2645 | trap-instruction bp (bp_breakpoint), or a | |
2646 | bp_hardware_breakpoint. */ | |
2647 | ||
2648 | /* First check to see if we have to handle an overlay. */ | |
2649 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2650 | || bl->section == NULL |
2651 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2652 | { |
2653 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 2654 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 2655 | } |
c906108c SS |
2656 | else |
2657 | { | |
4a64f543 | 2658 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2659 | Did we set a breakpoint at the LMA? */ |
2660 | if (!overlay_events_enabled) | |
2661 | { | |
2662 | /* Yes -- overlay event support is not active, so we | |
2663 | should have set a breakpoint at the LMA. Remove it. | |
2664 | */ | |
c02f5703 MS |
2665 | /* Ignore any failures: if the LMA is in ROM, we will |
2666 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2667 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2668 | target_remove_hw_breakpoint (bl->gdbarch, | |
2669 | &bl->overlay_target_info); | |
c02f5703 | 2670 | else |
35df4500 TJB |
2671 | target_remove_breakpoint (bl->gdbarch, |
2672 | &bl->overlay_target_info); | |
c02f5703 MS |
2673 | } |
2674 | /* Did we set a breakpoint at the VMA? | |
2675 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2676 | if (bl->inserted) |
c906108c | 2677 | { |
c02f5703 MS |
2678 | /* Yes -- remove it. Previously we did not bother to |
2679 | remove the breakpoint if the section had been | |
2680 | unmapped, but let's not rely on that being safe. We | |
2681 | don't know what the overlay manager might do. */ | |
aa67235e UW |
2682 | |
2683 | /* However, we should remove *software* breakpoints only | |
2684 | if the section is still mapped, or else we overwrite | |
2685 | wrong code with the saved shadow contents. */ | |
348d480f PA |
2686 | if (bl->loc_type == bp_loc_hardware_breakpoint |
2687 | || section_is_mapped (bl->section)) | |
2688 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
2689 | else |
2690 | val = 0; | |
c906108c | 2691 | } |
c02f5703 MS |
2692 | else |
2693 | { | |
2694 | /* No -- not inserted, so no need to remove. No error. */ | |
2695 | val = 0; | |
2696 | } | |
c906108c | 2697 | } |
879d1e6b UW |
2698 | |
2699 | /* In some cases, we might not be able to remove a breakpoint | |
2700 | in a shared library that has already been removed, but we | |
2701 | have not yet processed the shlib unload event. */ | |
35df4500 | 2702 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2703 | val = 0; |
2704 | ||
c906108c SS |
2705 | if (val) |
2706 | return val; | |
35df4500 | 2707 | bl->inserted = (is == mark_inserted); |
c906108c | 2708 | } |
35df4500 | 2709 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2710 | { |
77b06cd7 TJB |
2711 | gdb_assert (bl->owner->ops != NULL |
2712 | && bl->owner->ops->remove_location != NULL); | |
2713 | ||
35df4500 | 2714 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2715 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2716 | |
c906108c | 2717 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2718 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2719 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2720 | bl->owner->number); |
c906108c | 2721 | } |
35df4500 TJB |
2722 | else if (bl->owner->type == bp_catchpoint |
2723 | && breakpoint_enabled (bl->owner) | |
2724 | && !bl->duplicate) | |
ce78b96d | 2725 | { |
77b06cd7 TJB |
2726 | gdb_assert (bl->owner->ops != NULL |
2727 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2728 | |
77b06cd7 | 2729 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2730 | if (val) |
2731 | return val; | |
77b06cd7 | 2732 | |
35df4500 | 2733 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2734 | } |
c906108c SS |
2735 | |
2736 | return 0; | |
2737 | } | |
2738 | ||
6c95b8df | 2739 | static int |
35df4500 | 2740 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2741 | { |
2742 | int ret; | |
2743 | struct cleanup *old_chain; | |
2744 | ||
35df4500 TJB |
2745 | /* BL is never in moribund_locations by our callers. */ |
2746 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2747 | |
35df4500 | 2748 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2749 | /* Permanent breakpoints cannot be inserted or removed. */ |
2750 | return 0; | |
2751 | ||
2752 | /* The type of none suggests that owner is actually deleted. | |
2753 | This should not ever happen. */ | |
35df4500 | 2754 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2755 | |
2756 | old_chain = save_current_space_and_thread (); | |
2757 | ||
35df4500 | 2758 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2759 | |
35df4500 | 2760 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2761 | |
2762 | do_cleanups (old_chain); | |
2763 | return ret; | |
2764 | } | |
2765 | ||
c906108c SS |
2766 | /* Clear the "inserted" flag in all breakpoints. */ |
2767 | ||
25b22b0a | 2768 | void |
fba45db2 | 2769 | mark_breakpoints_out (void) |
c906108c | 2770 | { |
35df4500 | 2771 | struct bp_location *bl, **blp_tmp; |
c906108c | 2772 | |
35df4500 TJB |
2773 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2774 | if (bl->pspace == current_program_space) | |
2775 | bl->inserted = 0; | |
c906108c SS |
2776 | } |
2777 | ||
53a5351d JM |
2778 | /* Clear the "inserted" flag in all breakpoints and delete any |
2779 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2780 | |
2781 | Plus other such housekeeping that has to be done for breakpoints | |
2782 | between runs. | |
2783 | ||
53a5351d JM |
2784 | Note: this function gets called at the end of a run (by |
2785 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2786 | init_wait_for_inferior). */ |
c906108c SS |
2787 | |
2788 | ||
2789 | ||
2790 | void | |
fba45db2 | 2791 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2792 | { |
35df4500 TJB |
2793 | struct breakpoint *b, *b_tmp; |
2794 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2795 | int ix; |
6c95b8df | 2796 | struct program_space *pspace = current_program_space; |
c906108c | 2797 | |
50c71eaf PA |
2798 | /* If breakpoint locations are shared across processes, then there's |
2799 | nothing to do. */ | |
2567c7d9 | 2800 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2801 | return; |
2802 | ||
35df4500 | 2803 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2804 | { |
35df4500 TJB |
2805 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2806 | if (bl->pspace == pspace | |
2807 | && bl->owner->enable_state != bp_permanent) | |
2808 | bl->inserted = 0; | |
6c95b8df | 2809 | } |
075f6582 | 2810 | |
35df4500 | 2811 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2812 | { |
6c95b8df PA |
2813 | if (b->loc && b->loc->pspace != pspace) |
2814 | continue; | |
2815 | ||
c5aa993b JM |
2816 | switch (b->type) |
2817 | { | |
2818 | case bp_call_dummy: | |
c906108c | 2819 | |
c5aa993b | 2820 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2821 | cause problems when the inferior is rerun, so we better get |
2822 | rid of it. */ | |
2823 | ||
2824 | case bp_watchpoint_scope: | |
2825 | ||
2826 | /* Also get rid of scope breakpoints. */ | |
2827 | ||
2828 | case bp_shlib_event: | |
2829 | ||
2830 | /* Also remove solib event breakpoints. Their addresses may | |
2831 | have changed since the last time we ran the program. | |
2832 | Actually we may now be debugging against different target; | |
2833 | and so the solib backend that installed this breakpoint may | |
2834 | not be used in by the target. E.g., | |
2835 | ||
2836 | (gdb) file prog-linux | |
2837 | (gdb) run # native linux target | |
2838 | ... | |
2839 | (gdb) kill | |
2840 | (gdb) file prog-win.exe | |
2841 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2842 | */ | |
c906108c | 2843 | |
c5aa993b JM |
2844 | delete_breakpoint (b); |
2845 | break; | |
c906108c | 2846 | |
c5aa993b JM |
2847 | case bp_watchpoint: |
2848 | case bp_hardware_watchpoint: | |
2849 | case bp_read_watchpoint: | |
2850 | case bp_access_watchpoint: | |
3a5c3e22 PA |
2851 | { |
2852 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 2853 | |
3a5c3e22 PA |
2854 | /* Likewise for watchpoints on local expressions. */ |
2855 | if (w->exp_valid_block != NULL) | |
2856 | delete_breakpoint (b); | |
2857 | else if (context == inf_starting) | |
2858 | { | |
2859 | /* Reset val field to force reread of starting value in | |
2860 | insert_breakpoints. */ | |
2861 | if (w->val) | |
2862 | value_free (w->val); | |
2863 | w->val = NULL; | |
2864 | w->val_valid = 0; | |
c860120c | 2865 | } |
3a5c3e22 | 2866 | } |
c5aa993b JM |
2867 | break; |
2868 | default: | |
c5aa993b JM |
2869 | break; |
2870 | } | |
2871 | } | |
1c5cfe86 PA |
2872 | |
2873 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2874 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2875 | decref_bp_location (&bl); | |
1c5cfe86 | 2876 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2877 | } |
2878 | ||
6c95b8df PA |
2879 | /* These functions concern about actual breakpoints inserted in the |
2880 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2881 | we need to hop over the bkpt --- so we check for address space | |
2882 | match, not program space. */ | |
2883 | ||
c2c6d25f JM |
2884 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2885 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2886 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2887 | permanent breakpoint. | |
2888 | - When continuing from a location with an ordinary breakpoint, we | |
2889 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 2890 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
2891 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
2892 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2893 | |
c2c6d25f | 2894 | enum breakpoint_here |
6c95b8df | 2895 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2896 | { |
35df4500 | 2897 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2898 | int any_breakpoint_here = 0; |
c906108c | 2899 | |
35df4500 | 2900 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2901 | { |
35df4500 TJB |
2902 | if (bl->loc_type != bp_loc_software_breakpoint |
2903 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2904 | continue; |
2905 | ||
f1310107 | 2906 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2907 | if ((breakpoint_enabled (bl->owner) |
2908 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2909 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2910 | { |
2911 | if (overlay_debugging | |
35df4500 TJB |
2912 | && section_is_overlay (bl->section) |
2913 | && !section_is_mapped (bl->section)) | |
075f6582 | 2914 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2915 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2916 | return permanent_breakpoint_here; |
2917 | else | |
2918 | any_breakpoint_here = 1; | |
2919 | } | |
2920 | } | |
c906108c | 2921 | |
c2c6d25f | 2922 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2923 | } |
2924 | ||
1c5cfe86 PA |
2925 | /* Return true if there's a moribund breakpoint at PC. */ |
2926 | ||
2927 | int | |
6c95b8df | 2928 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2929 | { |
2930 | struct bp_location *loc; | |
2931 | int ix; | |
2932 | ||
2933 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2934 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2935 | return 1; |
2936 | ||
2937 | return 0; | |
2938 | } | |
c2c6d25f | 2939 | |
c36b740a | 2940 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2941 | inserted using regular breakpoint_chain / bp_location array |
2942 | mechanism. This does not check for single-step breakpoints, which | |
2943 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2944 | |
2945 | int | |
4a64f543 MS |
2946 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2947 | CORE_ADDR pc) | |
c906108c | 2948 | { |
35df4500 | 2949 | struct bp_location *bl, **blp_tmp; |
c906108c | 2950 | |
35df4500 | 2951 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2952 | { |
35df4500 TJB |
2953 | if (bl->loc_type != bp_loc_software_breakpoint |
2954 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2955 | continue; |
2956 | ||
35df4500 | 2957 | if (bl->inserted |
f1310107 | 2958 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2959 | { |
2960 | if (overlay_debugging | |
35df4500 TJB |
2961 | && section_is_overlay (bl->section) |
2962 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2963 | continue; /* unmapped overlay -- can't be a match */ |
2964 | else | |
2965 | return 1; | |
2966 | } | |
c5aa993b | 2967 | } |
c36b740a VP |
2968 | return 0; |
2969 | } | |
2970 | ||
2971 | /* Returns non-zero iff there's either regular breakpoint | |
2972 | or a single step breakpoint inserted at PC. */ | |
2973 | ||
2974 | int | |
6c95b8df | 2975 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2976 | { |
6c95b8df | 2977 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2978 | return 1; |
c906108c | 2979 | |
6c95b8df | 2980 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2981 | return 1; |
2982 | ||
c906108c SS |
2983 | return 0; |
2984 | } | |
2985 | ||
4fa8626c DJ |
2986 | /* This function returns non-zero iff there is a software breakpoint |
2987 | inserted at PC. */ | |
2988 | ||
2989 | int | |
3e43a32a MS |
2990 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2991 | CORE_ADDR pc) | |
4fa8626c | 2992 | { |
35df4500 | 2993 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2994 | |
35df4500 | 2995 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2996 | { |
35df4500 | 2997 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2998 | continue; |
2999 | ||
35df4500 TJB |
3000 | if (bl->inserted |
3001 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3002 | aspace, pc)) |
4fa8626c DJ |
3003 | { |
3004 | if (overlay_debugging | |
35df4500 TJB |
3005 | && section_is_overlay (bl->section) |
3006 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3007 | continue; /* unmapped overlay -- can't be a match */ |
3008 | else | |
3009 | return 1; | |
3010 | } | |
3011 | } | |
3012 | ||
1aafd4da | 3013 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3014 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3015 | return 1; |
3016 | ||
4fa8626c DJ |
3017 | return 0; |
3018 | } | |
3019 | ||
9093389c PA |
3020 | int |
3021 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3022 | CORE_ADDR addr, ULONGEST len) | |
3023 | { | |
3024 | struct breakpoint *bpt; | |
3025 | ||
3026 | ALL_BREAKPOINTS (bpt) | |
3027 | { | |
3028 | struct bp_location *loc; | |
3029 | ||
3030 | if (bpt->type != bp_hardware_watchpoint | |
3031 | && bpt->type != bp_access_watchpoint) | |
3032 | continue; | |
3033 | ||
3034 | if (!breakpoint_enabled (bpt)) | |
3035 | continue; | |
3036 | ||
3037 | for (loc = bpt->loc; loc; loc = loc->next) | |
3038 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3039 | { | |
3040 | CORE_ADDR l, h; | |
3041 | ||
3042 | /* Check for intersection. */ | |
3043 | l = max (loc->address, addr); | |
3044 | h = min (loc->address + loc->length, addr + len); | |
3045 | if (l < h) | |
3046 | return 1; | |
3047 | } | |
3048 | } | |
3049 | return 0; | |
3050 | } | |
3051 | ||
075f6582 DJ |
3052 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3053 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3054 | |
3055 | int | |
6c95b8df PA |
3056 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3057 | ptid_t ptid) | |
c906108c | 3058 | { |
35df4500 | 3059 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3060 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3061 | int thread = -1; |
4a306c9a | 3062 | int task = 0; |
a6f1cd96 | 3063 | |
35df4500 | 3064 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3065 | { |
35df4500 TJB |
3066 | if (bl->loc_type != bp_loc_software_breakpoint |
3067 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3068 | continue; |
3069 | ||
35df4500 TJB |
3070 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3071 | if (!breakpoint_enabled (bl->owner) | |
3072 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3073 | continue; |
3074 | ||
f1310107 | 3075 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3076 | continue; |
3077 | ||
35df4500 | 3078 | if (bl->owner->thread != -1) |
075f6582 | 3079 | { |
a6f1cd96 JB |
3080 | /* This is a thread-specific breakpoint. Check that ptid |
3081 | matches that thread. If thread hasn't been computed yet, | |
3082 | it is now time to do so. */ | |
3083 | if (thread == -1) | |
3084 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3085 | if (bl->owner->thread != thread) |
a6f1cd96 | 3086 | continue; |
075f6582 | 3087 | } |
a6f1cd96 | 3088 | |
35df4500 | 3089 | if (bl->owner->task != 0) |
4a306c9a JB |
3090 | { |
3091 | /* This is a task-specific breakpoint. Check that ptid | |
3092 | matches that task. If task hasn't been computed yet, | |
3093 | it is now time to do so. */ | |
3094 | if (task == 0) | |
3095 | task = ada_get_task_number (ptid); | |
35df4500 | 3096 | if (bl->owner->task != task) |
4a306c9a JB |
3097 | continue; |
3098 | } | |
3099 | ||
a6f1cd96 | 3100 | if (overlay_debugging |
35df4500 TJB |
3101 | && section_is_overlay (bl->section) |
3102 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3103 | continue; /* unmapped overlay -- can't be a match */ |
3104 | ||
3105 | return 1; | |
c5aa993b | 3106 | } |
c906108c SS |
3107 | |
3108 | return 0; | |
3109 | } | |
c906108c | 3110 | \f |
c5aa993b | 3111 | |
c906108c SS |
3112 | /* bpstat stuff. External routines' interfaces are documented |
3113 | in breakpoint.h. */ | |
3114 | ||
3115 | int | |
fba45db2 | 3116 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3117 | { |
533be4dd | 3118 | return (ep->type == bp_catchpoint); |
c906108c SS |
3119 | } |
3120 | ||
f431efe5 PA |
3121 | /* Frees any storage that is part of a bpstat. Does not walk the |
3122 | 'next' chain. */ | |
3123 | ||
3124 | static void | |
198757a8 VP |
3125 | bpstat_free (bpstat bs) |
3126 | { | |
3127 | if (bs->old_val != NULL) | |
3128 | value_free (bs->old_val); | |
9add0f1b | 3129 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3130 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3131 | xfree (bs); |
3132 | } | |
3133 | ||
c906108c SS |
3134 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3135 | Also free any storage that is part of a bpstat. */ | |
3136 | ||
3137 | void | |
fba45db2 | 3138 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3139 | { |
3140 | bpstat p; | |
3141 | bpstat q; | |
3142 | ||
3143 | if (bsp == 0) | |
3144 | return; | |
3145 | p = *bsp; | |
3146 | while (p != NULL) | |
3147 | { | |
3148 | q = p->next; | |
198757a8 | 3149 | bpstat_free (p); |
c906108c SS |
3150 | p = q; |
3151 | } | |
3152 | *bsp = NULL; | |
3153 | } | |
3154 | ||
3155 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3156 | is part of the bpstat is copied as well. */ | |
3157 | ||
3158 | bpstat | |
fba45db2 | 3159 | bpstat_copy (bpstat bs) |
c906108c SS |
3160 | { |
3161 | bpstat p = NULL; | |
3162 | bpstat tmp; | |
3163 | bpstat retval = NULL; | |
3164 | ||
3165 | if (bs == NULL) | |
3166 | return bs; | |
3167 | ||
3168 | for (; bs != NULL; bs = bs->next) | |
3169 | { | |
3170 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3171 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3172 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3173 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3174 | if (bs->old_val != NULL) |
3c3185ac JK |
3175 | { |
3176 | tmp->old_val = value_copy (bs->old_val); | |
3177 | release_value (tmp->old_val); | |
3178 | } | |
31cc81e9 | 3179 | |
c906108c SS |
3180 | if (p == NULL) |
3181 | /* This is the first thing in the chain. */ | |
3182 | retval = tmp; | |
3183 | else | |
3184 | p->next = tmp; | |
3185 | p = tmp; | |
3186 | } | |
3187 | p->next = NULL; | |
3188 | return retval; | |
3189 | } | |
3190 | ||
4a64f543 | 3191 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3192 | |
3193 | bpstat | |
fba45db2 | 3194 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3195 | { |
c5aa993b JM |
3196 | if (bsp == NULL) |
3197 | return NULL; | |
c906108c | 3198 | |
c5aa993b JM |
3199 | for (; bsp != NULL; bsp = bsp->next) |
3200 | { | |
f431efe5 | 3201 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3202 | return bsp; |
3203 | } | |
c906108c SS |
3204 | return NULL; |
3205 | } | |
3206 | ||
4a64f543 MS |
3207 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3208 | stopped at. *BSP upon return is a bpstat which points to the | |
3209 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3210 | good for anything but further calls to bpstat_num). | |
3211 | ||
8671a17b PA |
3212 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3213 | Return -1 if stopped at a breakpoint that has been deleted since | |
3214 | we set it. | |
3215 | Return 1 otherwise. */ | |
c906108c SS |
3216 | |
3217 | int | |
8671a17b | 3218 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3219 | { |
3220 | struct breakpoint *b; | |
3221 | ||
3222 | if ((*bsp) == NULL) | |
3223 | return 0; /* No more breakpoint values */ | |
8671a17b | 3224 | |
4a64f543 MS |
3225 | /* We assume we'll never have several bpstats that correspond to a |
3226 | single breakpoint -- otherwise, this function might return the | |
3227 | same number more than once and this will look ugly. */ | |
f431efe5 | 3228 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3229 | *bsp = (*bsp)->next; |
3230 | if (b == NULL) | |
3231 | return -1; /* breakpoint that's been deleted since */ | |
3232 | ||
3233 | *num = b->number; /* We have its number */ | |
3234 | return 1; | |
c906108c SS |
3235 | } |
3236 | ||
e93ca019 | 3237 | /* See breakpoint.h. */ |
c906108c SS |
3238 | |
3239 | void | |
e93ca019 | 3240 | bpstat_clear_actions (void) |
c906108c | 3241 | { |
e93ca019 JK |
3242 | struct thread_info *tp; |
3243 | bpstat bs; | |
3244 | ||
3245 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3246 | return; | |
3247 | ||
3248 | tp = find_thread_ptid (inferior_ptid); | |
3249 | if (tp == NULL) | |
3250 | return; | |
3251 | ||
3252 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 3253 | { |
9add0f1b | 3254 | decref_counted_command_line (&bs->commands); |
abf85f46 | 3255 | |
c906108c SS |
3256 | if (bs->old_val != NULL) |
3257 | { | |
3258 | value_free (bs->old_val); | |
3259 | bs->old_val = NULL; | |
3260 | } | |
3261 | } | |
3262 | } | |
3263 | ||
f3b1572e PA |
3264 | /* Called when a command is about to proceed the inferior. */ |
3265 | ||
3266 | static void | |
3267 | breakpoint_about_to_proceed (void) | |
3268 | { | |
3269 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3270 | { | |
3271 | struct thread_info *tp = inferior_thread (); | |
3272 | ||
3273 | /* Allow inferior function calls in breakpoint commands to not | |
3274 | interrupt the command list. When the call finishes | |
3275 | successfully, the inferior will be standing at the same | |
3276 | breakpoint as if nothing happened. */ | |
16c381f0 | 3277 | if (tp->control.in_infcall) |
f3b1572e PA |
3278 | return; |
3279 | } | |
3280 | ||
3281 | breakpoint_proceeded = 1; | |
3282 | } | |
3283 | ||
4a64f543 MS |
3284 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3285 | command. */ | |
c906108c | 3286 | static void |
4efb68b1 | 3287 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3288 | { |
3289 | executing_breakpoint_commands = 0; | |
3290 | } | |
3291 | ||
abf85f46 JK |
3292 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
3293 | or its equivalent. */ | |
3294 | ||
3295 | static int | |
3296 | command_line_is_silent (struct command_line *cmd) | |
3297 | { | |
3298 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
3299 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
3300 | } | |
3301 | ||
4a64f543 MS |
3302 | /* Execute all the commands associated with all the breakpoints at |
3303 | this location. Any of these commands could cause the process to | |
3304 | proceed beyond this point, etc. We look out for such changes by | |
3305 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3306 | |
347bddb7 PA |
3307 | Returns true if a breakpoint command resumed the inferior. In that |
3308 | case, it is the caller's responsibility to recall it again with the | |
3309 | bpstat of the current thread. */ | |
3310 | ||
3311 | static int | |
3312 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3313 | { |
3314 | bpstat bs; | |
3315 | struct cleanup *old_chain; | |
347bddb7 | 3316 | int again = 0; |
c906108c SS |
3317 | |
3318 | /* Avoid endless recursion if a `source' command is contained | |
3319 | in bs->commands. */ | |
3320 | if (executing_breakpoint_commands) | |
347bddb7 | 3321 | return 0; |
c906108c SS |
3322 | |
3323 | executing_breakpoint_commands = 1; | |
3324 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3325 | ||
cf6c5ffb TT |
3326 | prevent_dont_repeat (); |
3327 | ||
4a64f543 | 3328 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3329 | bs = *bsp; |
3330 | ||
3331 | breakpoint_proceeded = 0; | |
3332 | for (; bs != NULL; bs = bs->next) | |
3333 | { | |
9add0f1b | 3334 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3335 | struct command_line *cmd; |
3336 | struct cleanup *this_cmd_tree_chain; | |
3337 | ||
3338 | /* Take ownership of the BSP's command tree, if it has one. | |
3339 | ||
3340 | The command tree could legitimately contain commands like | |
3341 | 'step' and 'next', which call clear_proceed_status, which | |
3342 | frees stop_bpstat's command tree. To make sure this doesn't | |
3343 | free the tree we're executing out from under us, we need to | |
3344 | take ownership of the tree ourselves. Since a given bpstat's | |
3345 | commands are only executed once, we don't need to copy it; we | |
3346 | can clear the pointer in the bpstat, and make sure we free | |
3347 | the tree when we're done. */ | |
9add0f1b TT |
3348 | ccmd = bs->commands; |
3349 | bs->commands = NULL; | |
abf85f46 JK |
3350 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
3351 | cmd = ccmd ? ccmd->commands : NULL; | |
3352 | if (command_line_is_silent (cmd)) | |
3353 | { | |
3354 | /* The action has been already done by bpstat_stop_status. */ | |
3355 | cmd = cmd->next; | |
3356 | } | |
6c50ab1c | 3357 | |
c906108c SS |
3358 | while (cmd != NULL) |
3359 | { | |
3360 | execute_control_command (cmd); | |
3361 | ||
3362 | if (breakpoint_proceeded) | |
3363 | break; | |
3364 | else | |
3365 | cmd = cmd->next; | |
3366 | } | |
6c50ab1c JB |
3367 | |
3368 | /* We can free this command tree now. */ | |
3369 | do_cleanups (this_cmd_tree_chain); | |
3370 | ||
c906108c | 3371 | if (breakpoint_proceeded) |
32c1e744 VP |
3372 | { |
3373 | if (target_can_async_p ()) | |
347bddb7 PA |
3374 | /* If we are in async mode, then the target might be still |
3375 | running, not stopped at any breakpoint, so nothing for | |
3376 | us to do here -- just return to the event loop. */ | |
3377 | ; | |
32c1e744 VP |
3378 | else |
3379 | /* In sync mode, when execute_control_command returns | |
3380 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3381 | Breakpoint commands for that stop were not run, since |
3382 | execute_command does not run breakpoint commands -- | |
3383 | only command_line_handler does, but that one is not | |
3384 | involved in execution of breakpoint commands. So, we | |
3385 | can now execute breakpoint commands. It should be | |
3386 | noted that making execute_command do bpstat actions is | |
3387 | not an option -- in this case we'll have recursive | |
3388 | invocation of bpstat for each breakpoint with a | |
3389 | command, and can easily blow up GDB stack. Instead, we | |
3390 | return true, which will trigger the caller to recall us | |
3391 | with the new stop_bpstat. */ | |
3392 | again = 1; | |
3393 | break; | |
32c1e744 | 3394 | } |
c906108c | 3395 | } |
c2b8ed2c | 3396 | do_cleanups (old_chain); |
347bddb7 PA |
3397 | return again; |
3398 | } | |
3399 | ||
3400 | void | |
3401 | bpstat_do_actions (void) | |
3402 | { | |
353d1d73 JK |
3403 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
3404 | ||
347bddb7 PA |
3405 | /* Do any commands attached to breakpoint we are stopped at. */ |
3406 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3407 | && target_has_execution | |
3408 | && !is_exited (inferior_ptid) | |
3409 | && !is_executing (inferior_ptid)) | |
3410 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3411 | and only return when it is stopped at the next breakpoint, we | |
3412 | keep doing breakpoint actions until it returns false to | |
3413 | indicate the inferior was not resumed. */ | |
16c381f0 | 3414 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3415 | break; |
353d1d73 JK |
3416 | |
3417 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
3418 | } |
3419 | ||
fa4727a6 DJ |
3420 | /* Print out the (old or new) value associated with a watchpoint. */ |
3421 | ||
3422 | static void | |
3423 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3424 | { | |
3425 | if (val == NULL) | |
3426 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3427 | else | |
79a45b7d TT |
3428 | { |
3429 | struct value_print_options opts; | |
3430 | get_user_print_options (&opts); | |
3431 | value_print (val, stream, &opts); | |
3432 | } | |
fa4727a6 DJ |
3433 | } |
3434 | ||
e514a9d6 | 3435 | /* Generic routine for printing messages indicating why we |
4a64f543 | 3436 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3437 | 'print_it' in the bpstat structure. Under some circumstances we |
3438 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3439 | normal_stop(). */ |
e514a9d6 JM |
3440 | |
3441 | static enum print_stop_action | |
3442 | print_bp_stop_message (bpstat bs) | |
3443 | { | |
3444 | switch (bs->print_it) | |
3445 | { | |
3446 | case print_it_noop: | |
4a64f543 | 3447 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3448 | return PRINT_UNKNOWN; |
3449 | break; | |
3450 | ||
3451 | case print_it_done: | |
3452 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3453 | relevant messages. */ |
e514a9d6 JM |
3454 | return PRINT_SRC_AND_LOC; |
3455 | break; | |
3456 | ||
3457 | case print_it_normal: | |
4f8d1dc6 | 3458 | { |
f431efe5 PA |
3459 | struct breakpoint *b = bs->breakpoint_at; |
3460 | ||
1a6a67de TJB |
3461 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3462 | which has since been deleted. */ | |
3463 | if (b == NULL) | |
3464 | return PRINT_UNKNOWN; | |
3465 | ||
348d480f PA |
3466 | /* Normal case. Call the breakpoint's print_it method. */ |
3467 | return b->ops->print_it (bs); | |
4f8d1dc6 | 3468 | } |
348d480f | 3469 | break; |
3086aeae | 3470 | |
e514a9d6 | 3471 | default: |
8e65ff28 | 3472 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3473 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3474 | break; |
c906108c | 3475 | } |
c906108c SS |
3476 | } |
3477 | ||
e514a9d6 JM |
3478 | /* Print a message indicating what happened. This is called from |
3479 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
3480 | list - a list of the eventpoints that caused this stop. KIND is |
3481 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
3482 | routine calls the generic print routine for printing a message |
3483 | about reasons for stopping. This will print (for example) the | |
3484 | "Breakpoint n," part of the output. The return value of this | |
3485 | routine is one of: | |
c906108c | 3486 | |
4a64f543 | 3487 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3488 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3489 | code to print the location. An example is |
c5aa993b JM |
3490 | "Breakpoint 1, " which should be followed by |
3491 | the location. | |
917317f4 | 3492 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3493 | to also print the location part of the message. |
3494 | An example is the catch/throw messages, which | |
4a64f543 | 3495 | don't require a location appended to the end. |
917317f4 | 3496 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3497 | further info to be printed. */ |
c906108c | 3498 | |
917317f4 | 3499 | enum print_stop_action |
36dfb11c | 3500 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
3501 | { |
3502 | int val; | |
c5aa993b | 3503 | |
c906108c | 3504 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3505 | (Currently all watchpoints go on the bpstat whether hit or not. |
3506 | That probably could (should) be changed, provided care is taken | |
c906108c | 3507 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3508 | for (; bs; bs = bs->next) |
3509 | { | |
3510 | val = print_bp_stop_message (bs); | |
3511 | if (val == PRINT_SRC_ONLY | |
3512 | || val == PRINT_SRC_AND_LOC | |
3513 | || val == PRINT_NOTHING) | |
3514 | return val; | |
3515 | } | |
c906108c | 3516 | |
36dfb11c TT |
3517 | /* If we had hit a shared library event breakpoint, |
3518 | print_bp_stop_message would print out this message. If we hit an | |
3519 | OS-level shared library event, do the same thing. */ | |
3520 | if (kind == TARGET_WAITKIND_LOADED) | |
3521 | { | |
3522 | ui_out_text (current_uiout, _("Stopped due to shared library event\n")); | |
3523 | if (ui_out_is_mi_like_p (current_uiout)) | |
3524 | ui_out_field_string (current_uiout, "reason", | |
3525 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
3526 | return PRINT_NOTHING; | |
3527 | } | |
3528 | ||
e514a9d6 | 3529 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3530 | with and nothing was printed. */ |
917317f4 | 3531 | return PRINT_UNKNOWN; |
c906108c SS |
3532 | } |
3533 | ||
4a64f543 MS |
3534 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3535 | used inside a catch_errors to evaluate the breakpoint condition. | |
3536 | The argument is a "struct expression *" that has been cast to a | |
3537 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3538 | |
3539 | static int | |
4efb68b1 | 3540 | breakpoint_cond_eval (void *exp) |
c906108c | 3541 | { |
278cd55f | 3542 | struct value *mark = value_mark (); |
c5aa993b | 3543 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3544 | |
c906108c SS |
3545 | value_free_to_mark (mark); |
3546 | return i; | |
3547 | } | |
3548 | ||
5760d0ab | 3549 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3550 | |
3551 | static bpstat | |
5760d0ab | 3552 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3553 | { |
3554 | bpstat bs; | |
3555 | ||
3556 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3557 | bs->next = NULL; |
3558 | **bs_link_pointer = bs; | |
3559 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3560 | bs->breakpoint_at = bl->owner; |
3561 | bs->bp_location_at = bl; | |
3562 | incref_bp_location (bl); | |
c906108c SS |
3563 | /* If the condition is false, etc., don't do the commands. */ |
3564 | bs->commands = NULL; | |
3565 | bs->old_val = NULL; | |
3566 | bs->print_it = print_it_normal; | |
3567 | return bs; | |
3568 | } | |
3569 | \f | |
d983da9c DJ |
3570 | /* The target has stopped with waitstatus WS. Check if any hardware |
3571 | watchpoints have triggered, according to the target. */ | |
3572 | ||
3573 | int | |
3574 | watchpoints_triggered (struct target_waitstatus *ws) | |
3575 | { | |
d92524f1 | 3576 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3577 | CORE_ADDR addr; |
3578 | struct breakpoint *b; | |
3579 | ||
3580 | if (!stopped_by_watchpoint) | |
3581 | { | |
3582 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3583 | as not triggered. */ | |
3584 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3585 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3586 | { |
3587 | struct watchpoint *w = (struct watchpoint *) b; | |
3588 | ||
3589 | w->watchpoint_triggered = watch_triggered_no; | |
3590 | } | |
d983da9c DJ |
3591 | |
3592 | return 0; | |
3593 | } | |
3594 | ||
3595 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3596 | { | |
3597 | /* We were stopped by a watchpoint, but we don't know where. | |
3598 | Mark all watchpoints as unknown. */ | |
3599 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3600 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3601 | { |
3602 | struct watchpoint *w = (struct watchpoint *) b; | |
3603 | ||
3604 | w->watchpoint_triggered = watch_triggered_unknown; | |
3605 | } | |
d983da9c DJ |
3606 | |
3607 | return stopped_by_watchpoint; | |
3608 | } | |
3609 | ||
3610 | /* The target could report the data address. Mark watchpoints | |
3611 | affected by this data address as triggered, and all others as not | |
3612 | triggered. */ | |
3613 | ||
3614 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3615 | if (is_hardware_watchpoint (b)) |
d983da9c | 3616 | { |
3a5c3e22 | 3617 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 3618 | struct bp_location *loc; |
d983da9c | 3619 | |
3a5c3e22 | 3620 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 3621 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 3622 | { |
3a5c3e22 | 3623 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 3624 | { |
3a5c3e22 PA |
3625 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
3626 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
3627 | |
3628 | if (newaddr == start) | |
3629 | { | |
3a5c3e22 | 3630 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3631 | break; |
3632 | } | |
3633 | } | |
3634 | /* Exact match not required. Within range is sufficient. */ | |
3635 | else if (target_watchpoint_addr_within_range (¤t_target, | |
3636 | addr, loc->address, | |
3637 | loc->length)) | |
3638 | { | |
3a5c3e22 | 3639 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3640 | break; |
3641 | } | |
3642 | } | |
d983da9c DJ |
3643 | } |
3644 | ||
3645 | return 1; | |
3646 | } | |
3647 | ||
c906108c SS |
3648 | /* Possible return values for watchpoint_check (this can't be an enum |
3649 | because of check_errors). */ | |
3650 | /* The watchpoint has been deleted. */ | |
3651 | #define WP_DELETED 1 | |
3652 | /* The value has changed. */ | |
3653 | #define WP_VALUE_CHANGED 2 | |
3654 | /* The value has not changed. */ | |
3655 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3656 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3657 | #define WP_IGNORE 4 | |
c906108c SS |
3658 | |
3659 | #define BP_TEMPFLAG 1 | |
3660 | #define BP_HARDWAREFLAG 2 | |
3661 | ||
4a64f543 MS |
3662 | /* Evaluate watchpoint condition expression and check if its value |
3663 | changed. | |
553e4c11 JB |
3664 | |
3665 | P should be a pointer to struct bpstat, but is defined as a void * | |
3666 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3667 | |
3668 | static int | |
4efb68b1 | 3669 | watchpoint_check (void *p) |
c906108c SS |
3670 | { |
3671 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 3672 | struct watchpoint *b; |
c906108c SS |
3673 | struct frame_info *fr; |
3674 | int within_current_scope; | |
3675 | ||
f431efe5 | 3676 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3677 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 3678 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 3679 | |
f6bc2008 PA |
3680 | /* If this is a local watchpoint, we only want to check if the |
3681 | watchpoint frame is in scope if the current thread is the thread | |
3682 | that was used to create the watchpoint. */ | |
3683 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3684 | return WP_IGNORE; |
f6bc2008 | 3685 | |
c906108c SS |
3686 | if (b->exp_valid_block == NULL) |
3687 | within_current_scope = 1; | |
3688 | else | |
3689 | { | |
edb3359d DJ |
3690 | struct frame_info *frame = get_current_frame (); |
3691 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3692 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3693 | ||
4a64f543 MS |
3694 | /* in_function_epilogue_p() returns a non-zero value if we're |
3695 | still in the function but the stack frame has already been | |
3696 | invalidated. Since we can't rely on the values of local | |
3697 | variables after the stack has been destroyed, we are treating | |
3698 | the watchpoint in that state as `not changed' without further | |
3699 | checking. Don't mark watchpoints as changed if the current | |
3700 | frame is in an epilogue - even if they are in some other | |
3701 | frame, our view of the stack is likely to be wrong and | |
3702 | frame_find_by_id could error out. */ | |
a0f49112 | 3703 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3704 | return WP_IGNORE; |
a0f49112 | 3705 | |
101dcfbe | 3706 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3707 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3708 | |
3709 | /* If we've gotten confused in the unwinder, we might have | |
3710 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3711 | if (within_current_scope) |
3712 | { | |
3713 | struct symbol *function; | |
3714 | ||
3715 | function = get_frame_function (fr); | |
3716 | if (function == NULL | |
3717 | || !contained_in (b->exp_valid_block, | |
3718 | SYMBOL_BLOCK_VALUE (function))) | |
3719 | within_current_scope = 0; | |
3720 | } | |
69fbadd5 | 3721 | |
edb3359d | 3722 | if (within_current_scope) |
c906108c SS |
3723 | /* If we end up stopping, the current frame will get selected |
3724 | in normal_stop. So this call to select_frame won't affect | |
3725 | the user. */ | |
0f7d239c | 3726 | select_frame (fr); |
c906108c | 3727 | } |
c5aa993b | 3728 | |
c906108c SS |
3729 | if (within_current_scope) |
3730 | { | |
4a64f543 MS |
3731 | /* We use value_{,free_to_}mark because it could be a *long* |
3732 | time before we return to the command level and call | |
3733 | free_all_values. We can't call free_all_values because we | |
3734 | might be in the middle of evaluating a function call. */ | |
c906108c | 3735 | |
0cf6dd15 | 3736 | int pc = 0; |
9c06b0b4 | 3737 | struct value *mark; |
fa4727a6 DJ |
3738 | struct value *new_val; |
3739 | ||
3a5c3e22 | 3740 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
3741 | /* Since we don't know the exact trigger address (from |
3742 | stopped_data_address), just tell the user we've triggered | |
3743 | a mask watchpoint. */ | |
3744 | return WP_VALUE_CHANGED; | |
3745 | ||
3746 | mark = value_mark (); | |
0cf6dd15 | 3747 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3748 | |
4a64f543 MS |
3749 | /* We use value_equal_contents instead of value_equal because |
3750 | the latter coerces an array to a pointer, thus comparing just | |
3751 | the address of the array instead of its contents. This is | |
3752 | not what we want. */ | |
fa4727a6 | 3753 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3754 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3755 | { |
fa4727a6 DJ |
3756 | if (new_val != NULL) |
3757 | { | |
3758 | release_value (new_val); | |
3759 | value_free_to_mark (mark); | |
3760 | } | |
c906108c SS |
3761 | bs->old_val = b->val; |
3762 | b->val = new_val; | |
fa4727a6 | 3763 | b->val_valid = 1; |
c906108c SS |
3764 | return WP_VALUE_CHANGED; |
3765 | } | |
3766 | else | |
3767 | { | |
60e1c644 | 3768 | /* Nothing changed. */ |
c906108c | 3769 | value_free_to_mark (mark); |
c906108c SS |
3770 | return WP_VALUE_NOT_CHANGED; |
3771 | } | |
3772 | } | |
3773 | else | |
3774 | { | |
79a45e25 PA |
3775 | struct ui_out *uiout = current_uiout; |
3776 | ||
c906108c | 3777 | /* This seems like the only logical thing to do because |
c5aa993b JM |
3778 | if we temporarily ignored the watchpoint, then when |
3779 | we reenter the block in which it is valid it contains | |
3780 | garbage (in the case of a function, it may have two | |
3781 | garbage values, one before and one after the prologue). | |
3782 | So we can't even detect the first assignment to it and | |
3783 | watch after that (since the garbage may or may not equal | |
3784 | the first value assigned). */ | |
348d480f PA |
3785 | /* We print all the stop information in |
3786 | breakpoint_ops->print_it, but in this case, by the time we | |
3787 | call breakpoint_ops->print_it this bp will be deleted | |
3788 | already. So we have no choice but print the information | |
3789 | here. */ | |
9dc5e2a9 | 3790 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3791 | ui_out_field_string |
3792 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3793 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 3794 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
3795 | ui_out_text (uiout, |
3796 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3797 | which its expression is valid.\n"); |
4ce44c66 | 3798 | |
cdac0397 | 3799 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 3800 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 3801 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3802 | |
3803 | return WP_DELETED; | |
3804 | } | |
3805 | } | |
3806 | ||
18a18393 | 3807 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
3808 | breakpoint location BL. This function does not check if we should |
3809 | stop, only if BL explains the stop. */ | |
3810 | ||
18a18393 | 3811 | static int |
6c95b8df PA |
3812 | bpstat_check_location (const struct bp_location *bl, |
3813 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3814 | { |
3815 | struct breakpoint *b = bl->owner; | |
3816 | ||
348d480f | 3817 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
3818 | gdb_assert (b != NULL); |
3819 | ||
348d480f | 3820 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); |
18a18393 VP |
3821 | } |
3822 | ||
3a5c3e22 PA |
3823 | /* Determine if the watched values have actually changed, and we |
3824 | should stop. If not, set BS->stop to 0. */ | |
3825 | ||
18a18393 VP |
3826 | static void |
3827 | bpstat_check_watchpoint (bpstat bs) | |
3828 | { | |
2bdf28a0 | 3829 | const struct bp_location *bl; |
3a5c3e22 | 3830 | struct watchpoint *b; |
2bdf28a0 JK |
3831 | |
3832 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3833 | bl = bs->bp_location_at; |
2bdf28a0 | 3834 | gdb_assert (bl != NULL); |
3a5c3e22 | 3835 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 3836 | gdb_assert (b != NULL); |
18a18393 | 3837 | |
18a18393 | 3838 | { |
18a18393 VP |
3839 | int must_check_value = 0; |
3840 | ||
3a5c3e22 | 3841 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
3842 | /* For a software watchpoint, we must always check the |
3843 | watched value. */ | |
3844 | must_check_value = 1; | |
3845 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3846 | /* We have a hardware watchpoint (read, write, or access) | |
3847 | and the target earlier reported an address watched by | |
3848 | this watchpoint. */ | |
3849 | must_check_value = 1; | |
3850 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 3851 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
3852 | /* We were stopped by a hardware watchpoint, but the target could |
3853 | not report the data address. We must check the watchpoint's | |
3854 | value. Access and read watchpoints are out of luck; without | |
3855 | a data address, we can't figure it out. */ | |
3856 | must_check_value = 1; | |
3a5c3e22 | 3857 | |
18a18393 VP |
3858 | if (must_check_value) |
3859 | { | |
3e43a32a MS |
3860 | char *message |
3861 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 3862 | b->base.number); |
18a18393 VP |
3863 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3864 | int e = catch_errors (watchpoint_check, bs, message, | |
3865 | RETURN_MASK_ALL); | |
3866 | do_cleanups (cleanups); | |
3867 | switch (e) | |
3868 | { | |
3869 | case WP_DELETED: | |
3870 | /* We've already printed what needs to be printed. */ | |
3871 | bs->print_it = print_it_done; | |
3872 | /* Stop. */ | |
3873 | break; | |
60e1c644 PA |
3874 | case WP_IGNORE: |
3875 | bs->print_it = print_it_noop; | |
3876 | bs->stop = 0; | |
3877 | break; | |
18a18393 | 3878 | case WP_VALUE_CHANGED: |
3a5c3e22 | 3879 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 3880 | { |
85d721b8 PA |
3881 | /* There are two cases to consider here: |
3882 | ||
4a64f543 | 3883 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3884 | In that case, trust the target, and always report |
3885 | the watchpoint hit to the user. Even though | |
3886 | reads don't cause value changes, the value may | |
3887 | have changed since the last time it was read, and | |
3888 | since we're not trapping writes, we will not see | |
3889 | those, and as such we should ignore our notion of | |
3890 | old value. | |
3891 | ||
4a64f543 | 3892 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3893 | reads and writes. There are two ways this may |
3894 | happen: | |
3895 | ||
4a64f543 | 3896 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3897 | reads only, but can break on accesses (reads or |
3898 | writes), such as e.g., x86. We detect this case | |
3899 | at the time we try to insert read watchpoints. | |
3900 | ||
4a64f543 | 3901 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3902 | watchpoints, but, the user set an access or write |
3903 | watchpoint watching the same memory as this read | |
3904 | watchpoint. | |
3905 | ||
3906 | If we're watching memory writes as well as reads, | |
3907 | ignore watchpoint hits when we find that the | |
3908 | value hasn't changed, as reads don't cause | |
3909 | changes. This still gives false positives when | |
3910 | the program writes the same value to memory as | |
3911 | what there was already in memory (we will confuse | |
3912 | it for a read), but it's much better than | |
3913 | nothing. */ | |
3914 | ||
3915 | int other_write_watchpoint = 0; | |
3916 | ||
3917 | if (bl->watchpoint_type == hw_read) | |
3918 | { | |
3919 | struct breakpoint *other_b; | |
3920 | ||
3921 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
3922 | if (other_b->type == bp_hardware_watchpoint |
3923 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 3924 | { |
3a5c3e22 PA |
3925 | struct watchpoint *other_w = |
3926 | (struct watchpoint *) other_b; | |
3927 | ||
3928 | if (other_w->watchpoint_triggered | |
3929 | == watch_triggered_yes) | |
3930 | { | |
3931 | other_write_watchpoint = 1; | |
3932 | break; | |
3933 | } | |
85d721b8 PA |
3934 | } |
3935 | } | |
3936 | ||
3937 | if (other_write_watchpoint | |
3938 | || bl->watchpoint_type == hw_access) | |
3939 | { | |
3940 | /* We're watching the same memory for writes, | |
3941 | and the value changed since the last time we | |
3942 | updated it, so this trap must be for a write. | |
3943 | Ignore it. */ | |
3944 | bs->print_it = print_it_noop; | |
3945 | bs->stop = 0; | |
3946 | } | |
18a18393 VP |
3947 | } |
3948 | break; | |
3949 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
3950 | if (b->base.type == bp_hardware_watchpoint |
3951 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
3952 | { |
3953 | /* Don't stop: write watchpoints shouldn't fire if | |
3954 | the value hasn't changed. */ | |
3955 | bs->print_it = print_it_noop; | |
3956 | bs->stop = 0; | |
3957 | } | |
3958 | /* Stop. */ | |
3959 | break; | |
3960 | default: | |
3961 | /* Can't happen. */ | |
3962 | case 0: | |
3963 | /* Error from catch_errors. */ | |
3a5c3e22 | 3964 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 3965 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
3966 | /* We've already printed what needs to be printed. */ |
3967 | bs->print_it = print_it_done; | |
3968 | break; | |
3969 | } | |
3970 | } | |
3971 | else /* must_check_value == 0 */ | |
3972 | { | |
3973 | /* This is a case where some watchpoint(s) triggered, but | |
3974 | not at the address of this watchpoint, or else no | |
3975 | watchpoint triggered after all. So don't print | |
3976 | anything for this watchpoint. */ | |
3977 | bs->print_it = print_it_noop; | |
3978 | bs->stop = 0; | |
3979 | } | |
3980 | } | |
3981 | } | |
3982 | ||
3983 | ||
3984 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3985 | of breakpoint referred to by BS. If we should not stop for this | |
3986 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 3987 | |
18a18393 VP |
3988 | static void |
3989 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3990 | { | |
3991 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3992 | const struct bp_location *bl; |
3993 | struct breakpoint *b; | |
3994 | ||
3995 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3996 | bl = bs->bp_location_at; |
2bdf28a0 | 3997 | gdb_assert (bl != NULL); |
f431efe5 | 3998 | b = bs->breakpoint_at; |
2bdf28a0 | 3999 | gdb_assert (b != NULL); |
18a18393 VP |
4000 | |
4001 | if (frame_id_p (b->frame_id) | |
edb3359d | 4002 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4003 | bs->stop = 0; |
4004 | else if (bs->stop) | |
4005 | { | |
4006 | int value_is_zero = 0; | |
60e1c644 PA |
4007 | struct expression *cond; |
4008 | ||
7371cf6d PM |
4009 | /* Evaluate Python breakpoints that have a "stop" |
4010 | method implemented. */ | |
4011 | if (b->py_bp_object) | |
4012 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4013 | ||
60e1c644 | 4014 | if (is_watchpoint (b)) |
3a5c3e22 PA |
4015 | { |
4016 | struct watchpoint *w = (struct watchpoint *) b; | |
4017 | ||
4018 | cond = w->cond_exp; | |
4019 | } | |
60e1c644 PA |
4020 | else |
4021 | cond = bl->cond; | |
4022 | ||
f431efe5 | 4023 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4024 | { |
60e1c644 | 4025 | int within_current_scope = 1; |
3a5c3e22 | 4026 | struct watchpoint * w; |
60e1c644 | 4027 | |
c5bc3a77 DJ |
4028 | /* We use value_mark and value_free_to_mark because it could |
4029 | be a long time before we return to the command level and | |
4030 | call free_all_values. We can't call free_all_values | |
4031 | because we might be in the middle of evaluating a | |
4032 | function call. */ | |
4033 | struct value *mark = value_mark (); | |
4034 | ||
3a5c3e22 PA |
4035 | if (is_watchpoint (b)) |
4036 | w = (struct watchpoint *) b; | |
4037 | else | |
4038 | w = NULL; | |
4039 | ||
edb3359d DJ |
4040 | /* Need to select the frame, with all that implies so that |
4041 | the conditions will have the right context. Because we | |
4042 | use the frame, we will not see an inlined function's | |
4043 | variables when we arrive at a breakpoint at the start | |
4044 | of the inlined function; the current frame will be the | |
4045 | call site. */ | |
3a5c3e22 | 4046 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
4047 | select_frame (get_current_frame ()); |
4048 | else | |
4049 | { | |
4050 | struct frame_info *frame; | |
4051 | ||
4052 | /* For local watchpoint expressions, which particular | |
4053 | instance of a local is being watched matters, so we | |
4054 | keep track of the frame to evaluate the expression | |
4055 | in. To evaluate the condition however, it doesn't | |
4056 | really matter which instantiation of the function | |
4057 | where the condition makes sense triggers the | |
4058 | watchpoint. This allows an expression like "watch | |
4059 | global if q > 10" set in `func', catch writes to | |
4060 | global on all threads that call `func', or catch | |
4061 | writes on all recursive calls of `func' by a single | |
4062 | thread. We simply always evaluate the condition in | |
4063 | the innermost frame that's executing where it makes | |
4064 | sense to evaluate the condition. It seems | |
4065 | intuitive. */ | |
3a5c3e22 | 4066 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
4067 | if (frame != NULL) |
4068 | select_frame (frame); | |
4069 | else | |
4070 | within_current_scope = 0; | |
4071 | } | |
4072 | if (within_current_scope) | |
4073 | value_is_zero | |
4074 | = catch_errors (breakpoint_cond_eval, cond, | |
4075 | "Error in testing breakpoint condition:\n", | |
4076 | RETURN_MASK_ALL); | |
4077 | else | |
4078 | { | |
4079 | warning (_("Watchpoint condition cannot be tested " | |
4080 | "in the current scope")); | |
4081 | /* If we failed to set the right context for this | |
4082 | watchpoint, unconditionally report it. */ | |
4083 | value_is_zero = 0; | |
4084 | } | |
4a64f543 | 4085 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4086 | value_free_to_mark (mark); |
18a18393 | 4087 | } |
60e1c644 PA |
4088 | |
4089 | if (cond && value_is_zero) | |
18a18393 VP |
4090 | { |
4091 | bs->stop = 0; | |
4092 | } | |
4093 | else if (b->thread != -1 && b->thread != thread_id) | |
4094 | { | |
4095 | bs->stop = 0; | |
4096 | } | |
4097 | else if (b->ignore_count > 0) | |
4098 | { | |
4099 | b->ignore_count--; | |
4100 | annotate_ignore_count_change (); | |
4101 | bs->stop = 0; | |
4a64f543 | 4102 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4103 | ++(b->hit_count); |
8d3788bd | 4104 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4105 | } |
4106 | } | |
4107 | } | |
4108 | ||
4109 | ||
9709f61c | 4110 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4111 | BP_ADDR in thread PTID. |
c906108c | 4112 | |
d983da9c | 4113 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4114 | don't understand this stop. Result is a chain of bpstat's such |
4115 | that: | |
c906108c | 4116 | |
c5aa993b | 4117 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4118 | |
c5aa993b | 4119 | if we understand why we stopped, the result is not null. |
c906108c | 4120 | |
c5aa993b JM |
4121 | Each element of the chain refers to a particular breakpoint or |
4122 | watchpoint at which we have stopped. (We may have stopped for | |
4123 | several reasons concurrently.) | |
c906108c | 4124 | |
c5aa993b JM |
4125 | Each element of the chain has valid next, breakpoint_at, |
4126 | commands, FIXME??? fields. */ | |
c906108c SS |
4127 | |
4128 | bpstat | |
6c95b8df PA |
4129 | bpstat_stop_status (struct address_space *aspace, |
4130 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4131 | { |
0d381245 | 4132 | struct breakpoint *b = NULL; |
afe38095 | 4133 | struct bp_location *bl; |
20874c92 | 4134 | struct bp_location *loc; |
5760d0ab JK |
4135 | /* First item of allocated bpstat's. */ |
4136 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4137 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4138 | bpstat bs; |
20874c92 | 4139 | int ix; |
429374b8 | 4140 | int need_remove_insert; |
f431efe5 | 4141 | int removed_any; |
c906108c | 4142 | |
f431efe5 PA |
4143 | /* First, build the bpstat chain with locations that explain a |
4144 | target stop, while being careful to not set the target running, | |
4145 | as that may invalidate locations (in particular watchpoint | |
4146 | locations are recreated). Resuming will happen here with | |
4147 | breakpoint conditions or watchpoint expressions that include | |
4148 | inferior function calls. */ | |
c5aa993b | 4149 | |
429374b8 JK |
4150 | ALL_BREAKPOINTS (b) |
4151 | { | |
4152 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4153 | continue; | |
a5606eee | 4154 | |
429374b8 JK |
4155 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4156 | { | |
4a64f543 MS |
4157 | /* For hardware watchpoints, we look only at the first |
4158 | location. The watchpoint_check function will work on the | |
4159 | entire expression, not the individual locations. For | |
4160 | read watchpoints, the watchpoints_triggered function has | |
4161 | checked all locations already. */ | |
429374b8 JK |
4162 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4163 | break; | |
18a18393 | 4164 | |
429374b8 JK |
4165 | if (bl->shlib_disabled) |
4166 | continue; | |
c5aa993b | 4167 | |
429374b8 JK |
4168 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4169 | continue; | |
c5aa993b | 4170 | |
4a64f543 MS |
4171 | /* Come here if it's a watchpoint, or if the break address |
4172 | matches. */ | |
c5aa993b | 4173 | |
4a64f543 MS |
4174 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4175 | explain stop. */ | |
c5aa993b | 4176 | |
f431efe5 PA |
4177 | /* Assume we stop. Should we find a watchpoint that is not |
4178 | actually triggered, or if the condition of the breakpoint | |
4179 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4180 | bs->stop = 1; |
4181 | bs->print = 1; | |
d983da9c | 4182 | |
f431efe5 PA |
4183 | /* If this is a scope breakpoint, mark the associated |
4184 | watchpoint as triggered so that we will handle the | |
4185 | out-of-scope event. We'll get to the watchpoint next | |
4186 | iteration. */ | |
d0fb5eae | 4187 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4188 | { |
4189 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4190 | ||
4191 | w->watchpoint_triggered = watch_triggered_yes; | |
4192 | } | |
f431efe5 PA |
4193 | } |
4194 | } | |
4195 | ||
4196 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4197 | { | |
f1310107 | 4198 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4199 | { |
5760d0ab | 4200 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4201 | /* For hits of moribund locations, we should just proceed. */ |
4202 | bs->stop = 0; | |
4203 | bs->print = 0; | |
4204 | bs->print_it = print_it_noop; | |
4205 | } | |
4206 | } | |
4207 | ||
f431efe5 PA |
4208 | /* Now go through the locations that caused the target to stop, and |
4209 | check whether we're interested in reporting this stop to higher | |
4210 | layers, or whether we should resume the target transparently. */ | |
4211 | ||
4212 | removed_any = 0; | |
4213 | ||
5760d0ab | 4214 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4215 | { |
4216 | if (!bs->stop) | |
4217 | continue; | |
4218 | ||
f431efe5 | 4219 | b = bs->breakpoint_at; |
348d480f PA |
4220 | b->ops->check_status (bs); |
4221 | if (bs->stop) | |
28010a5d | 4222 | { |
348d480f | 4223 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4224 | |
429374b8 JK |
4225 | if (bs->stop) |
4226 | { | |
4227 | ++(b->hit_count); | |
8d3788bd | 4228 | observer_notify_breakpoint_modified (b); |
c906108c | 4229 | |
4a64f543 | 4230 | /* We will stop here. */ |
429374b8 JK |
4231 | if (b->disposition == disp_disable) |
4232 | { | |
4233 | if (b->enable_state != bp_permanent) | |
4234 | b->enable_state = bp_disabled; | |
f431efe5 | 4235 | removed_any = 1; |
429374b8 JK |
4236 | } |
4237 | if (b->silent) | |
4238 | bs->print = 0; | |
4239 | bs->commands = b->commands; | |
9add0f1b | 4240 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
4241 | if (command_line_is_silent (bs->commands |
4242 | ? bs->commands->commands : NULL)) | |
4243 | bs->print = 0; | |
429374b8 JK |
4244 | } |
4245 | ||
e5dd4106 | 4246 | /* Print nothing for this entry if we don't stop or don't print. */ |
429374b8 JK |
4247 | if (bs->stop == 0 || bs->print == 0) |
4248 | bs->print_it = print_it_noop; | |
348d480f | 4249 | } |
429374b8 | 4250 | } |
876fa593 | 4251 | |
d983da9c DJ |
4252 | /* If we aren't stopping, the value of some hardware watchpoint may |
4253 | not have changed, but the intermediate memory locations we are | |
4254 | watching may have. Don't bother if we're stopping; this will get | |
4255 | done later. */ | |
d832cb68 | 4256 | need_remove_insert = 0; |
5760d0ab JK |
4257 | if (! bpstat_causes_stop (bs_head)) |
4258 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4259 | if (!bs->stop |
f431efe5 PA |
4260 | && bs->breakpoint_at |
4261 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4262 | { |
3a5c3e22 PA |
4263 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
4264 | ||
4265 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 4266 | need_remove_insert = 1; |
d983da9c DJ |
4267 | } |
4268 | ||
d832cb68 | 4269 | if (need_remove_insert) |
2d134ed3 | 4270 | update_global_location_list (1); |
f431efe5 PA |
4271 | else if (removed_any) |
4272 | update_global_location_list (0); | |
d832cb68 | 4273 | |
5760d0ab | 4274 | return bs_head; |
c906108c | 4275 | } |
628fe4e4 JK |
4276 | |
4277 | static void | |
4278 | handle_jit_event (void) | |
4279 | { | |
4280 | struct frame_info *frame; | |
4281 | struct gdbarch *gdbarch; | |
4282 | ||
4283 | /* Switch terminal for any messages produced by | |
4284 | breakpoint_re_set. */ | |
4285 | target_terminal_ours_for_output (); | |
4286 | ||
4287 | frame = get_current_frame (); | |
4288 | gdbarch = get_frame_arch (frame); | |
4289 | ||
4290 | jit_event_handler (gdbarch); | |
4291 | ||
4292 | target_terminal_inferior (); | |
4293 | } | |
4294 | ||
4295 | /* Prepare WHAT final decision for infrun. */ | |
4296 | ||
4297 | /* Decide what infrun needs to do with this bpstat. */ | |
4298 | ||
c906108c | 4299 | struct bpstat_what |
0e30163f | 4300 | bpstat_what (bpstat bs_head) |
c906108c | 4301 | { |
c906108c | 4302 | struct bpstat_what retval; |
628fe4e4 JK |
4303 | /* We need to defer calling `solib_add', as adding new symbols |
4304 | resets breakpoints, which in turn deletes breakpoint locations, | |
4305 | and hence may clear unprocessed entries in the BS chain. */ | |
4306 | int shlib_event = 0; | |
4307 | int jit_event = 0; | |
0e30163f | 4308 | bpstat bs; |
c906108c | 4309 | |
628fe4e4 | 4310 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4311 | retval.call_dummy = STOP_NONE; |
186c406b | 4312 | retval.is_longjmp = 0; |
628fe4e4 | 4313 | |
0e30163f | 4314 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4315 | { |
628fe4e4 JK |
4316 | /* Extract this BS's action. After processing each BS, we check |
4317 | if its action overrides all we've seem so far. */ | |
4318 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4319 | enum bptype bptype; | |
4320 | ||
c906108c | 4321 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4322 | { |
4323 | /* I suspect this can happen if it was a momentary | |
4324 | breakpoint which has since been deleted. */ | |
4325 | bptype = bp_none; | |
4326 | } | |
20874c92 | 4327 | else |
f431efe5 | 4328 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4329 | |
4330 | switch (bptype) | |
c906108c SS |
4331 | { |
4332 | case bp_none: | |
628fe4e4 | 4333 | break; |
c906108c SS |
4334 | case bp_breakpoint: |
4335 | case bp_hardware_breakpoint: | |
4336 | case bp_until: | |
4337 | case bp_finish: | |
4338 | if (bs->stop) | |
4339 | { | |
4340 | if (bs->print) | |
628fe4e4 | 4341 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4342 | else |
628fe4e4 | 4343 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4344 | } |
4345 | else | |
628fe4e4 | 4346 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4347 | break; |
4348 | case bp_watchpoint: | |
4349 | case bp_hardware_watchpoint: | |
4350 | case bp_read_watchpoint: | |
4351 | case bp_access_watchpoint: | |
4352 | if (bs->stop) | |
4353 | { | |
4354 | if (bs->print) | |
628fe4e4 | 4355 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4356 | else |
628fe4e4 | 4357 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4358 | } |
4359 | else | |
628fe4e4 JK |
4360 | { |
4361 | /* There was a watchpoint, but we're not stopping. | |
4362 | This requires no further action. */ | |
4363 | } | |
c906108c SS |
4364 | break; |
4365 | case bp_longjmp: | |
186c406b | 4366 | case bp_exception: |
628fe4e4 | 4367 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4368 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4369 | break; |
4370 | case bp_longjmp_resume: | |
186c406b | 4371 | case bp_exception_resume: |
628fe4e4 | 4372 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4373 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4374 | break; |
4375 | case bp_step_resume: | |
4376 | if (bs->stop) | |
628fe4e4 JK |
4377 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4378 | else | |
c906108c | 4379 | { |
628fe4e4 JK |
4380 | /* It is for the wrong frame. */ |
4381 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4382 | } |
c906108c | 4383 | break; |
2c03e5be PA |
4384 | case bp_hp_step_resume: |
4385 | if (bs->stop) | |
4386 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
4387 | else | |
4388 | { | |
4389 | /* It is for the wrong frame. */ | |
4390 | this_action = BPSTAT_WHAT_SINGLE; | |
4391 | } | |
4392 | break; | |
c906108c | 4393 | case bp_watchpoint_scope: |
c4093a6a | 4394 | case bp_thread_event: |
1900040c | 4395 | case bp_overlay_event: |
0fd8e87f | 4396 | case bp_longjmp_master: |
aa7d318d | 4397 | case bp_std_terminate_master: |
186c406b | 4398 | case bp_exception_master: |
628fe4e4 | 4399 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4400 | break; |
ce78b96d | 4401 | case bp_catchpoint: |
c5aa993b JM |
4402 | if (bs->stop) |
4403 | { | |
4404 | if (bs->print) | |
628fe4e4 | 4405 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4406 | else |
628fe4e4 | 4407 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4408 | } |
4409 | else | |
628fe4e4 JK |
4410 | { |
4411 | /* There was a catchpoint, but we're not stopping. | |
4412 | This requires no further action. */ | |
4413 | } | |
4414 | break; | |
4415 | case bp_shlib_event: | |
4416 | shlib_event = 1; | |
4417 | ||
4418 | /* If requested, stop when the dynamic linker notifies GDB | |
4419 | of events. This allows the user to get control and place | |
4420 | breakpoints in initializer routines for dynamically | |
4421 | loaded objects (among other things). */ | |
4422 | if (stop_on_solib_events) | |
4423 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4424 | else | |
4425 | this_action = BPSTAT_WHAT_SINGLE; | |
4426 | break; | |
4427 | case bp_jit_event: | |
4428 | jit_event = 1; | |
4429 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4430 | break; |
c906108c | 4431 | case bp_call_dummy: |
53a5351d JM |
4432 | /* Make sure the action is stop (silent or noisy), |
4433 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4434 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4435 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4436 | break; |
4437 | case bp_std_terminate: | |
4438 | /* Make sure the action is stop (silent or noisy), | |
4439 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4440 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4441 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4442 | break; |
1042e4c0 | 4443 | case bp_tracepoint: |
7a697b8d | 4444 | case bp_fast_tracepoint: |
0fb4aa4b | 4445 | case bp_static_tracepoint: |
1042e4c0 SS |
4446 | /* Tracepoint hits should not be reported back to GDB, and |
4447 | if one got through somehow, it should have been filtered | |
4448 | out already. */ | |
4449 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4450 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4451 | break; |
4452 | case bp_gnu_ifunc_resolver: | |
4453 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4454 | this_action = BPSTAT_WHAT_SINGLE; | |
4455 | break; | |
4456 | case bp_gnu_ifunc_resolver_return: | |
4457 | /* The breakpoint will be removed, execution will restart from the | |
4458 | PC of the former breakpoint. */ | |
4459 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4460 | break; | |
628fe4e4 JK |
4461 | default: |
4462 | internal_error (__FILE__, __LINE__, | |
4463 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4464 | } |
628fe4e4 JK |
4465 | |
4466 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4467 | } |
628fe4e4 | 4468 | |
0e30163f JK |
4469 | /* These operations may affect the bs->breakpoint_at state so they are |
4470 | delayed after MAIN_ACTION is decided above. */ | |
4471 | ||
628fe4e4 JK |
4472 | if (shlib_event) |
4473 | { | |
4474 | if (debug_infrun) | |
4475 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4476 | ||
4477 | /* Check for any newly added shared libraries if we're supposed | |
4478 | to be adding them automatically. */ | |
4479 | ||
4480 | /* Switch terminal for any messages produced by | |
4481 | breakpoint_re_set. */ | |
4482 | target_terminal_ours_for_output (); | |
4483 | ||
4484 | #ifdef SOLIB_ADD | |
4485 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4486 | #else | |
4487 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4488 | #endif | |
4489 | ||
4490 | target_terminal_inferior (); | |
4491 | } | |
4492 | ||
4493 | if (jit_event) | |
4494 | { | |
4495 | if (debug_infrun) | |
4496 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4497 | ||
4498 | handle_jit_event (); | |
4499 | } | |
4500 | ||
0e30163f JK |
4501 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4502 | { | |
4503 | struct breakpoint *b = bs->breakpoint_at; | |
4504 | ||
4505 | if (b == NULL) | |
4506 | continue; | |
4507 | switch (b->type) | |
4508 | { | |
4509 | case bp_gnu_ifunc_resolver: | |
4510 | gnu_ifunc_resolver_stop (b); | |
4511 | break; | |
4512 | case bp_gnu_ifunc_resolver_return: | |
4513 | gnu_ifunc_resolver_return_stop (b); | |
4514 | break; | |
4515 | } | |
4516 | } | |
4517 | ||
c906108c SS |
4518 | return retval; |
4519 | } | |
4520 | ||
4521 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4522 | without hardware support). This isn't related to a specific bpstat, | |
4523 | just to things like whether watchpoints are set. */ | |
4524 | ||
c5aa993b | 4525 | int |
fba45db2 | 4526 | bpstat_should_step (void) |
c906108c SS |
4527 | { |
4528 | struct breakpoint *b; | |
cc59ec59 | 4529 | |
c906108c | 4530 | ALL_BREAKPOINTS (b) |
717a8278 | 4531 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4532 | return 1; |
c906108c SS |
4533 | return 0; |
4534 | } | |
4535 | ||
67822962 PA |
4536 | int |
4537 | bpstat_causes_stop (bpstat bs) | |
4538 | { | |
4539 | for (; bs != NULL; bs = bs->next) | |
4540 | if (bs->stop) | |
4541 | return 1; | |
4542 | ||
4543 | return 0; | |
4544 | } | |
4545 | ||
c906108c | 4546 | \f |
c5aa993b | 4547 | |
170b53b2 UW |
4548 | /* Compute a string of spaces suitable to indent the next line |
4549 | so it starts at the position corresponding to the table column | |
4550 | named COL_NAME in the currently active table of UIOUT. */ | |
4551 | ||
4552 | static char * | |
4553 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4554 | { | |
4555 | static char wrap_indent[80]; | |
4556 | int i, total_width, width, align; | |
4557 | char *text; | |
4558 | ||
4559 | total_width = 0; | |
4560 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4561 | { | |
4562 | if (strcmp (text, col_name) == 0) | |
4563 | { | |
4564 | gdb_assert (total_width < sizeof wrap_indent); | |
4565 | memset (wrap_indent, ' ', total_width); | |
4566 | wrap_indent[total_width] = 0; | |
4567 | ||
4568 | return wrap_indent; | |
4569 | } | |
4570 | ||
4571 | total_width += width + 1; | |
4572 | } | |
4573 | ||
4574 | return NULL; | |
4575 | } | |
4576 | ||
859825b8 JK |
4577 | /* Print the LOC location out of the list of B->LOC locations. */ |
4578 | ||
170b53b2 UW |
4579 | static void |
4580 | print_breakpoint_location (struct breakpoint *b, | |
4581 | struct bp_location *loc) | |
0d381245 | 4582 | { |
79a45e25 | 4583 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
4584 | struct cleanup *old_chain = save_current_program_space (); |
4585 | ||
859825b8 JK |
4586 | if (loc != NULL && loc->shlib_disabled) |
4587 | loc = NULL; | |
4588 | ||
6c95b8df PA |
4589 | if (loc != NULL) |
4590 | set_current_program_space (loc->pspace); | |
4591 | ||
56435ebe TT |
4592 | if (b->display_canonical) |
4593 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 4594 | else if (loc && loc->source_file) |
0d381245 VP |
4595 | { |
4596 | struct symbol *sym | |
4597 | = find_pc_sect_function (loc->address, loc->section); | |
4598 | if (sym) | |
4599 | { | |
4600 | ui_out_text (uiout, "in "); | |
4601 | ui_out_field_string (uiout, "func", | |
4602 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4603 | ui_out_text (uiout, " "); |
4604 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4605 | ui_out_text (uiout, "at "); | |
0d381245 | 4606 | } |
f8eba3c6 | 4607 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
4608 | ui_out_text (uiout, ":"); |
4609 | ||
4610 | if (ui_out_is_mi_like_p (uiout)) | |
4611 | { | |
4612 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4613 | char *fullname = symtab_to_fullname (sal.symtab); | |
4614 | ||
4615 | if (fullname) | |
4616 | ui_out_field_string (uiout, "fullname", fullname); | |
4617 | } | |
4618 | ||
f8eba3c6 | 4619 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 4620 | } |
859825b8 | 4621 | else if (loc) |
0d381245 | 4622 | { |
170b53b2 UW |
4623 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4624 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4625 | ||
22e722e1 DJ |
4626 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4627 | demangle, ""); | |
0d381245 | 4628 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4629 | |
4630 | do_cleanups (stb_chain); | |
0d381245 | 4631 | } |
859825b8 JK |
4632 | else |
4633 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4634 | |
4635 | do_cleanups (old_chain); | |
0d381245 VP |
4636 | } |
4637 | ||
269b11a2 PA |
4638 | static const char * |
4639 | bptype_string (enum bptype type) | |
c906108c | 4640 | { |
c4093a6a JM |
4641 | struct ep_type_description |
4642 | { | |
4643 | enum bptype type; | |
4644 | char *description; | |
4645 | }; | |
4646 | static struct ep_type_description bptypes[] = | |
c906108c | 4647 | { |
c5aa993b JM |
4648 | {bp_none, "?deleted?"}, |
4649 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4650 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4651 | {bp_until, "until"}, |
4652 | {bp_finish, "finish"}, | |
4653 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4654 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4655 | {bp_read_watchpoint, "read watchpoint"}, |
4656 | {bp_access_watchpoint, "acc watchpoint"}, | |
4657 | {bp_longjmp, "longjmp"}, | |
4658 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4659 | {bp_exception, "exception"}, |
4660 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4661 | {bp_step_resume, "step resume"}, |
2c03e5be | 4662 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
4663 | {bp_watchpoint_scope, "watchpoint scope"}, |
4664 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4665 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4666 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4667 | {bp_thread_event, "thread events"}, |
1900040c | 4668 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4669 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4670 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4671 | {bp_exception_master, "exception master"}, |
ce78b96d | 4672 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4673 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4674 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4675 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4676 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4677 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4678 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4679 | }; |
269b11a2 PA |
4680 | |
4681 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4682 | || ((int) type != bptypes[(int) type].type)) | |
4683 | internal_error (__FILE__, __LINE__, | |
4684 | _("bptypes table does not describe type #%d."), | |
4685 | (int) type); | |
4686 | ||
4687 | return bptypes[(int) type].description; | |
4688 | } | |
4689 | ||
4690 | /* Print B to gdb_stdout. */ | |
4691 | ||
4692 | static void | |
4693 | print_one_breakpoint_location (struct breakpoint *b, | |
4694 | struct bp_location *loc, | |
4695 | int loc_number, | |
4696 | struct bp_location **last_loc, | |
269b11a2 PA |
4697 | int allflag) |
4698 | { | |
4699 | struct command_line *l; | |
c2c6d25f | 4700 | static char bpenables[] = "nynny"; |
c906108c | 4701 | |
79a45e25 | 4702 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
4703 | int header_of_multiple = 0; |
4704 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4705 | struct value_print_options opts; |
4706 | ||
4707 | get_user_print_options (&opts); | |
0d381245 VP |
4708 | |
4709 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4710 | /* See comment in print_one_breakpoint concerning treatment of |
4711 | breakpoints with single disabled location. */ | |
0d381245 VP |
4712 | if (loc == NULL |
4713 | && (b->loc != NULL | |
4714 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4715 | header_of_multiple = 1; | |
4716 | if (loc == NULL) | |
4717 | loc = b->loc; | |
4718 | ||
c4093a6a JM |
4719 | annotate_record (); |
4720 | ||
4721 | /* 1 */ | |
4722 | annotate_field (0); | |
0d381245 VP |
4723 | if (part_of_multiple) |
4724 | { | |
4725 | char *formatted; | |
0c6773c1 | 4726 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4727 | ui_out_field_string (uiout, "number", formatted); |
4728 | xfree (formatted); | |
4729 | } | |
4730 | else | |
4731 | { | |
4732 | ui_out_field_int (uiout, "number", b->number); | |
4733 | } | |
c4093a6a JM |
4734 | |
4735 | /* 2 */ | |
4736 | annotate_field (1); | |
0d381245 VP |
4737 | if (part_of_multiple) |
4738 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4739 | else |
4740 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4741 | |
4742 | /* 3 */ | |
4743 | annotate_field (2); | |
0d381245 VP |
4744 | if (part_of_multiple) |
4745 | ui_out_field_skip (uiout, "disp"); | |
4746 | else | |
2cec12e5 | 4747 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4748 | |
c4093a6a JM |
4749 | |
4750 | /* 4 */ | |
4751 | annotate_field (3); | |
0d381245 | 4752 | if (part_of_multiple) |
54e52265 | 4753 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4754 | else |
4a64f543 MS |
4755 | ui_out_field_fmt (uiout, "enabled", "%c", |
4756 | bpenables[(int) b->enable_state]); | |
54e52265 | 4757 | ui_out_spaces (uiout, 2); |
0d381245 | 4758 | |
c4093a6a JM |
4759 | |
4760 | /* 5 and 6 */ | |
3086aeae | 4761 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4762 | { |
4a64f543 MS |
4763 | /* Although the print_one can possibly print all locations, |
4764 | calling it here is not likely to get any nice result. So, | |
4765 | make sure there's just one location. */ | |
0d381245 | 4766 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4767 | b->ops->print_one (b, last_loc); |
0d381245 | 4768 | } |
3086aeae DJ |
4769 | else |
4770 | switch (b->type) | |
4771 | { | |
4772 | case bp_none: | |
4773 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4774 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4775 | break; |
c906108c | 4776 | |
3086aeae DJ |
4777 | case bp_watchpoint: |
4778 | case bp_hardware_watchpoint: | |
4779 | case bp_read_watchpoint: | |
4780 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4781 | { |
4782 | struct watchpoint *w = (struct watchpoint *) b; | |
4783 | ||
4784 | /* Field 4, the address, is omitted (which makes the columns | |
4785 | not line up too nicely with the headers, but the effect | |
4786 | is relatively readable). */ | |
4787 | if (opts.addressprint) | |
4788 | ui_out_field_skip (uiout, "addr"); | |
4789 | annotate_field (5); | |
4790 | ui_out_field_string (uiout, "what", w->exp_string); | |
4791 | } | |
3086aeae DJ |
4792 | break; |
4793 | ||
3086aeae DJ |
4794 | case bp_breakpoint: |
4795 | case bp_hardware_breakpoint: | |
4796 | case bp_until: | |
4797 | case bp_finish: | |
4798 | case bp_longjmp: | |
4799 | case bp_longjmp_resume: | |
186c406b TT |
4800 | case bp_exception: |
4801 | case bp_exception_resume: | |
3086aeae | 4802 | case bp_step_resume: |
2c03e5be | 4803 | case bp_hp_step_resume: |
3086aeae DJ |
4804 | case bp_watchpoint_scope: |
4805 | case bp_call_dummy: | |
aa7d318d | 4806 | case bp_std_terminate: |
3086aeae DJ |
4807 | case bp_shlib_event: |
4808 | case bp_thread_event: | |
4809 | case bp_overlay_event: | |
0fd8e87f | 4810 | case bp_longjmp_master: |
aa7d318d | 4811 | case bp_std_terminate_master: |
186c406b | 4812 | case bp_exception_master: |
1042e4c0 | 4813 | case bp_tracepoint: |
7a697b8d | 4814 | case bp_fast_tracepoint: |
0fb4aa4b | 4815 | case bp_static_tracepoint: |
4efc6507 | 4816 | case bp_jit_event: |
0e30163f JK |
4817 | case bp_gnu_ifunc_resolver: |
4818 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4819 | if (opts.addressprint) |
3086aeae DJ |
4820 | { |
4821 | annotate_field (4); | |
54e52265 | 4822 | if (header_of_multiple) |
0d381245 | 4823 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4824 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4825 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4826 | else |
5af949e3 UW |
4827 | ui_out_field_core_addr (uiout, "addr", |
4828 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4829 | } |
4830 | annotate_field (5); | |
0d381245 | 4831 | if (!header_of_multiple) |
170b53b2 | 4832 | print_breakpoint_location (b, loc); |
0d381245 | 4833 | if (b->loc) |
a6d9a66e | 4834 | *last_loc = b->loc; |
3086aeae DJ |
4835 | break; |
4836 | } | |
c906108c | 4837 | |
6c95b8df PA |
4838 | |
4839 | /* For backward compatibility, don't display inferiors unless there | |
4840 | are several. */ | |
4841 | if (loc != NULL | |
4842 | && !header_of_multiple | |
4843 | && (allflag | |
4844 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4845 | && (number_of_program_spaces () > 1 | |
4846 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4847 | /* LOC is for existing B, it cannot be in |
4848 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4849 | && loc->owner->type != bp_catchpoint))) |
4850 | { | |
4851 | struct inferior *inf; | |
4852 | int first = 1; | |
4853 | ||
4854 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4855 | { | |
4856 | if (inf->pspace == loc->pspace) | |
4857 | { | |
4858 | if (first) | |
4859 | { | |
4860 | first = 0; | |
4861 | ui_out_text (uiout, " inf "); | |
4862 | } | |
4863 | else | |
4864 | ui_out_text (uiout, ", "); | |
4865 | ui_out_text (uiout, plongest (inf->num)); | |
4866 | } | |
4867 | } | |
4868 | } | |
4869 | ||
4a306c9a | 4870 | if (!part_of_multiple) |
c4093a6a | 4871 | { |
4a306c9a JB |
4872 | if (b->thread != -1) |
4873 | { | |
4874 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4875 | "stop only in" line a little further down. */ |
4a306c9a JB |
4876 | ui_out_text (uiout, " thread "); |
4877 | ui_out_field_int (uiout, "thread", b->thread); | |
4878 | } | |
4879 | else if (b->task != 0) | |
4880 | { | |
4881 | ui_out_text (uiout, " task "); | |
4882 | ui_out_field_int (uiout, "task", b->task); | |
4883 | } | |
c4093a6a | 4884 | } |
f1310107 | 4885 | |
8b93c638 | 4886 | ui_out_text (uiout, "\n"); |
f1310107 | 4887 | |
348d480f | 4888 | if (!part_of_multiple) |
f1310107 TJB |
4889 | b->ops->print_one_detail (b, uiout); |
4890 | ||
0d381245 | 4891 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4892 | { |
4893 | annotate_field (6); | |
8b93c638 | 4894 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 4895 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 4896 | the frame ID. */ |
5af949e3 UW |
4897 | ui_out_field_core_addr (uiout, "frame", |
4898 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4899 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4900 | } |
4901 | ||
28010a5d | 4902 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
4903 | { |
4904 | annotate_field (7); | |
d77f58be | 4905 | if (is_tracepoint (b)) |
1042e4c0 SS |
4906 | ui_out_text (uiout, "\ttrace only if "); |
4907 | else | |
4908 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4909 | ui_out_field_string (uiout, "cond", b->cond_string); |
4910 | ui_out_text (uiout, "\n"); | |
4911 | } | |
4912 | ||
0d381245 | 4913 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4914 | { |
4a64f543 | 4915 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4916 | ui_out_text (uiout, "\tstop only in thread "); |
4917 | ui_out_field_int (uiout, "thread", b->thread); | |
4918 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4919 | } |
4920 | ||
63c715c6 | 4921 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4922 | { |
4a64f543 | 4923 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4924 | if (ep_is_catchpoint (b)) |
4925 | ui_out_text (uiout, "\tcatchpoint"); | |
f196051f SS |
4926 | else if (is_tracepoint (b)) |
4927 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
4928 | else |
4929 | ui_out_text (uiout, "\tbreakpoint"); | |
4930 | ui_out_text (uiout, " already hit "); | |
4931 | ui_out_field_int (uiout, "times", b->hit_count); | |
4932 | if (b->hit_count == 1) | |
4933 | ui_out_text (uiout, " time\n"); | |
4934 | else | |
4935 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4936 | } |
4937 | ||
4a64f543 MS |
4938 | /* Output the count also if it is zero, but only if this is mi. |
4939 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4940 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4941 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4942 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4943 | |
0d381245 | 4944 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4945 | { |
4946 | annotate_field (8); | |
8b93c638 JM |
4947 | ui_out_text (uiout, "\tignore next "); |
4948 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4949 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4950 | } |
059fb39f | 4951 | |
f196051f SS |
4952 | if (!part_of_multiple && is_tracepoint (b)) |
4953 | { | |
4954 | struct tracepoint *tp = (struct tracepoint *) b; | |
4955 | ||
4956 | if (tp->traceframe_usage) | |
4957 | { | |
4958 | ui_out_text (uiout, "\ttrace buffer usage "); | |
4959 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
4960 | ui_out_text (uiout, " bytes\n"); | |
4961 | } | |
4962 | } | |
4963 | ||
9add0f1b | 4964 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4965 | if (!part_of_multiple && l) |
c4093a6a | 4966 | { |
3b31d625 EZ |
4967 | struct cleanup *script_chain; |
4968 | ||
c4093a6a | 4969 | annotate_field (9); |
3b31d625 | 4970 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4971 | print_command_lines (uiout, l, 4); |
3b31d625 | 4972 | do_cleanups (script_chain); |
c4093a6a | 4973 | } |
d24317b4 | 4974 | |
d9b3f62e | 4975 | if (is_tracepoint (b)) |
1042e4c0 | 4976 | { |
d9b3f62e PA |
4977 | struct tracepoint *t = (struct tracepoint *) b; |
4978 | ||
4979 | if (!part_of_multiple && t->pass_count) | |
4980 | { | |
4981 | annotate_field (10); | |
4982 | ui_out_text (uiout, "\tpass count "); | |
4983 | ui_out_field_int (uiout, "pass", t->pass_count); | |
4984 | ui_out_text (uiout, " \n"); | |
4985 | } | |
1042e4c0 SS |
4986 | } |
4987 | ||
d24317b4 VP |
4988 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4989 | { | |
3a5c3e22 PA |
4990 | if (is_watchpoint (b)) |
4991 | { | |
4992 | struct watchpoint *w = (struct watchpoint *) b; | |
4993 | ||
4994 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
4995 | } | |
4996 | else if (b->addr_string) | |
d24317b4 | 4997 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 4998 | } |
c4093a6a | 4999 | } |
c5aa993b | 5000 | |
0d381245 VP |
5001 | static void |
5002 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5003 | struct bp_location **last_loc, |
6c95b8df | 5004 | int allflag) |
0d381245 | 5005 | { |
8d3788bd | 5006 | struct cleanup *bkpt_chain; |
79a45e25 | 5007 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
5008 | |
5009 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
5010 | ||
12c5a436 | 5011 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 5012 | do_cleanups (bkpt_chain); |
0d381245 VP |
5013 | |
5014 | /* If this breakpoint has custom print function, | |
5015 | it's already printed. Otherwise, print individual | |
5016 | locations, if any. */ | |
5017 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5018 | { | |
4a64f543 MS |
5019 | /* If breakpoint has a single location that is disabled, we |
5020 | print it as if it had several locations, since otherwise it's | |
5021 | hard to represent "breakpoint enabled, location disabled" | |
5022 | situation. | |
5023 | ||
5024 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5025 | internally, that's not a property exposed to user. */ |
0d381245 | 5026 | if (b->loc |
a5606eee | 5027 | && !is_hardware_watchpoint (b) |
8d3788bd | 5028 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5029 | { |
5030 | struct bp_location *loc; | |
5031 | int n = 1; | |
8d3788bd | 5032 | |
0d381245 | 5033 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5034 | { |
5035 | struct cleanup *inner2 = | |
5036 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5037 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5038 | do_cleanups (inner2); | |
5039 | } | |
0d381245 VP |
5040 | } |
5041 | } | |
5042 | } | |
5043 | ||
a6d9a66e UW |
5044 | static int |
5045 | breakpoint_address_bits (struct breakpoint *b) | |
5046 | { | |
5047 | int print_address_bits = 0; | |
5048 | struct bp_location *loc; | |
5049 | ||
5050 | for (loc = b->loc; loc; loc = loc->next) | |
5051 | { | |
c7437ca6 PA |
5052 | int addr_bit; |
5053 | ||
5054 | /* Software watchpoints that aren't watching memory don't have | |
5055 | an address to print. */ | |
5056 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5057 | continue; | |
5058 | ||
5059 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5060 | if (addr_bit > print_address_bits) |
5061 | print_address_bits = addr_bit; | |
5062 | } | |
5063 | ||
5064 | return print_address_bits; | |
5065 | } | |
0d381245 | 5066 | |
c4093a6a JM |
5067 | struct captured_breakpoint_query_args |
5068 | { | |
5069 | int bnum; | |
5070 | }; | |
c5aa993b | 5071 | |
c4093a6a | 5072 | static int |
2b65245e | 5073 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5074 | { |
5075 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5076 | struct breakpoint *b; |
a6d9a66e | 5077 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5078 | |
c4093a6a JM |
5079 | ALL_BREAKPOINTS (b) |
5080 | { | |
5081 | if (args->bnum == b->number) | |
c5aa993b | 5082 | { |
12c5a436 | 5083 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5084 | return GDB_RC_OK; |
c5aa993b | 5085 | } |
c4093a6a JM |
5086 | } |
5087 | return GDB_RC_NONE; | |
5088 | } | |
c5aa993b | 5089 | |
c4093a6a | 5090 | enum gdb_rc |
4a64f543 MS |
5091 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5092 | char **error_message) | |
c4093a6a JM |
5093 | { |
5094 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5095 | |
c4093a6a JM |
5096 | args.bnum = bnum; |
5097 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5098 | an error. */ |
b0b13bb4 DJ |
5099 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5100 | error_message, RETURN_MASK_ALL) < 0) | |
5101 | return GDB_RC_FAIL; | |
5102 | else | |
5103 | return GDB_RC_OK; | |
c4093a6a | 5104 | } |
c5aa993b | 5105 | |
09d682a4 TT |
5106 | /* Return true if this breakpoint was set by the user, false if it is |
5107 | internal or momentary. */ | |
5108 | ||
5109 | int | |
5110 | user_breakpoint_p (struct breakpoint *b) | |
5111 | { | |
46c6471b | 5112 | return b->number > 0; |
09d682a4 TT |
5113 | } |
5114 | ||
7f3b0473 | 5115 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5116 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5117 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5118 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5119 | ones for which it returns non-zero. Return the total number of | |
5120 | breakpoints listed. */ | |
c906108c | 5121 | |
d77f58be | 5122 | static int |
e5a67952 | 5123 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5124 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5125 | { |
52f0bd74 | 5126 | struct breakpoint *b; |
a6d9a66e | 5127 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5128 | int nr_printable_breakpoints; |
3b31d625 | 5129 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5130 | struct value_print_options opts; |
a6d9a66e | 5131 | int print_address_bits = 0; |
269b11a2 | 5132 | int print_type_col_width = 14; |
79a45e25 | 5133 | struct ui_out *uiout = current_uiout; |
269b11a2 | 5134 | |
79a45b7d TT |
5135 | get_user_print_options (&opts); |
5136 | ||
4a64f543 MS |
5137 | /* Compute the number of rows in the table, as well as the size |
5138 | required for address fields. */ | |
7f3b0473 AC |
5139 | nr_printable_breakpoints = 0; |
5140 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5141 | { |
5142 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5143 | if (filter && !filter (b)) | |
5144 | continue; | |
5145 | ||
5146 | /* If we have an "args" string, it is a list of breakpoints to | |
5147 | accept. Skip the others. */ | |
5148 | if (args != NULL && *args != '\0') | |
5149 | { | |
5150 | if (allflag && parse_and_eval_long (args) != b->number) | |
5151 | continue; | |
5152 | if (!allflag && !number_is_in_list (args, b->number)) | |
5153 | continue; | |
5154 | } | |
269b11a2 | 5155 | |
e5a67952 MS |
5156 | if (allflag || user_breakpoint_p (b)) |
5157 | { | |
5158 | int addr_bit, type_len; | |
a6d9a66e | 5159 | |
e5a67952 MS |
5160 | addr_bit = breakpoint_address_bits (b); |
5161 | if (addr_bit > print_address_bits) | |
5162 | print_address_bits = addr_bit; | |
269b11a2 | 5163 | |
e5a67952 MS |
5164 | type_len = strlen (bptype_string (b->type)); |
5165 | if (type_len > print_type_col_width) | |
5166 | print_type_col_width = type_len; | |
5167 | ||
5168 | nr_printable_breakpoints++; | |
5169 | } | |
5170 | } | |
7f3b0473 | 5171 | |
79a45b7d | 5172 | if (opts.addressprint) |
3b31d625 | 5173 | bkpttbl_chain |
3e43a32a MS |
5174 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5175 | nr_printable_breakpoints, | |
3b31d625 | 5176 | "BreakpointTable"); |
8b93c638 | 5177 | else |
3b31d625 | 5178 | bkpttbl_chain |
3e43a32a MS |
5179 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5180 | nr_printable_breakpoints, | |
3b31d625 | 5181 | "BreakpointTable"); |
8b93c638 | 5182 | |
7f3b0473 | 5183 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5184 | annotate_breakpoints_headers (); |
5185 | if (nr_printable_breakpoints > 0) | |
5186 | annotate_field (0); | |
4a64f543 | 5187 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5188 | if (nr_printable_breakpoints > 0) |
5189 | annotate_field (1); | |
269b11a2 | 5190 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5191 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5192 | if (nr_printable_breakpoints > 0) |
5193 | annotate_field (2); | |
4a64f543 | 5194 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5195 | if (nr_printable_breakpoints > 0) |
5196 | annotate_field (3); | |
54e52265 | 5197 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5198 | if (opts.addressprint) |
e5a67952 MS |
5199 | { |
5200 | if (nr_printable_breakpoints > 0) | |
5201 | annotate_field (4); | |
5202 | if (print_address_bits <= 32) | |
5203 | ui_out_table_header (uiout, 10, ui_left, | |
5204 | "addr", "Address"); /* 5 */ | |
5205 | else | |
5206 | ui_out_table_header (uiout, 18, ui_left, | |
5207 | "addr", "Address"); /* 5 */ | |
5208 | } | |
d7faa9e7 AC |
5209 | if (nr_printable_breakpoints > 0) |
5210 | annotate_field (5); | |
5211 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5212 | ui_out_table_body (uiout); | |
5213 | if (nr_printable_breakpoints > 0) | |
5214 | annotate_breakpoints_table (); | |
7f3b0473 | 5215 | |
c4093a6a | 5216 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5217 | { |
5218 | QUIT; | |
5219 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5220 | if (filter && !filter (b)) | |
5221 | continue; | |
5222 | ||
5223 | /* If we have an "args" string, it is a list of breakpoints to | |
5224 | accept. Skip the others. */ | |
5225 | ||
5226 | if (args != NULL && *args != '\0') | |
5227 | { | |
5228 | if (allflag) /* maintenance info breakpoint */ | |
5229 | { | |
5230 | if (parse_and_eval_long (args) != b->number) | |
5231 | continue; | |
5232 | } | |
5233 | else /* all others */ | |
5234 | { | |
5235 | if (!number_is_in_list (args, b->number)) | |
5236 | continue; | |
5237 | } | |
5238 | } | |
5239 | /* We only print out user settable breakpoints unless the | |
5240 | allflag is set. */ | |
5241 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5242 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5243 | } |
5244 | ||
3b31d625 | 5245 | do_cleanups (bkpttbl_chain); |
698384cd | 5246 | |
7f3b0473 | 5247 | if (nr_printable_breakpoints == 0) |
c906108c | 5248 | { |
4a64f543 MS |
5249 | /* If there's a filter, let the caller decide how to report |
5250 | empty list. */ | |
d77f58be SS |
5251 | if (!filter) |
5252 | { | |
e5a67952 | 5253 | if (args == NULL || *args == '\0') |
d77f58be SS |
5254 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5255 | else | |
4a64f543 | 5256 | ui_out_message (uiout, 0, |
e5a67952 MS |
5257 | "No breakpoint or watchpoint matching '%s'.\n", |
5258 | args); | |
d77f58be | 5259 | } |
c906108c SS |
5260 | } |
5261 | else | |
c4093a6a | 5262 | { |
a6d9a66e UW |
5263 | if (last_loc && !server_command) |
5264 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5265 | } |
c906108c | 5266 | |
4a64f543 | 5267 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5268 | there have been breakpoints? */ |
c906108c | 5269 | annotate_breakpoints_table_end (); |
d77f58be SS |
5270 | |
5271 | return nr_printable_breakpoints; | |
c906108c SS |
5272 | } |
5273 | ||
ad443146 SS |
5274 | /* Display the value of default-collect in a way that is generally |
5275 | compatible with the breakpoint list. */ | |
5276 | ||
5277 | static void | |
5278 | default_collect_info (void) | |
5279 | { | |
79a45e25 PA |
5280 | struct ui_out *uiout = current_uiout; |
5281 | ||
ad443146 SS |
5282 | /* If it has no value (which is frequently the case), say nothing; a |
5283 | message like "No default-collect." gets in user's face when it's | |
5284 | not wanted. */ | |
5285 | if (!*default_collect) | |
5286 | return; | |
5287 | ||
5288 | /* The following phrase lines up nicely with per-tracepoint collect | |
5289 | actions. */ | |
5290 | ui_out_text (uiout, "default collect "); | |
5291 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5292 | ui_out_text (uiout, " \n"); | |
5293 | } | |
5294 | ||
c906108c | 5295 | static void |
e5a67952 | 5296 | breakpoints_info (char *args, int from_tty) |
c906108c | 5297 | { |
e5a67952 | 5298 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5299 | |
5300 | default_collect_info (); | |
d77f58be SS |
5301 | } |
5302 | ||
5303 | static void | |
e5a67952 | 5304 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5305 | { |
e5a67952 | 5306 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 5307 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
5308 | |
5309 | if (num_printed == 0) | |
5310 | { | |
e5a67952 | 5311 | if (args == NULL || *args == '\0') |
d77f58be SS |
5312 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5313 | else | |
e5a67952 | 5314 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5315 | } |
c906108c SS |
5316 | } |
5317 | ||
7a292a7a | 5318 | static void |
e5a67952 | 5319 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5320 | { |
e5a67952 | 5321 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5322 | |
5323 | default_collect_info (); | |
c906108c SS |
5324 | } |
5325 | ||
0d381245 | 5326 | static int |
714835d5 | 5327 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5328 | struct program_space *pspace, |
714835d5 | 5329 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5330 | { |
5331 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5332 | |
0d381245 VP |
5333 | for (; bl; bl = bl->next) |
5334 | { | |
6c95b8df PA |
5335 | if (bl->pspace == pspace |
5336 | && bl->address == pc | |
0d381245 VP |
5337 | && (!overlay_debugging || bl->section == section)) |
5338 | return 1; | |
5339 | } | |
5340 | return 0; | |
5341 | } | |
5342 | ||
672f9b60 | 5343 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
5344 | concerns with logical breakpoints, so we match program spaces, not |
5345 | address spaces. */ | |
c906108c SS |
5346 | |
5347 | static void | |
6c95b8df PA |
5348 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5349 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5350 | struct obj_section *section, int thread) |
c906108c | 5351 | { |
52f0bd74 AC |
5352 | int others = 0; |
5353 | struct breakpoint *b; | |
c906108c SS |
5354 | |
5355 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
5356 | others += (user_breakpoint_p (b) |
5357 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
5358 | if (others > 0) |
5359 | { | |
a3f17187 AC |
5360 | if (others == 1) |
5361 | printf_filtered (_("Note: breakpoint ")); | |
5362 | else /* if (others == ???) */ | |
5363 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5364 | ALL_BREAKPOINTS (b) |
672f9b60 | 5365 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5366 | { |
5367 | others--; | |
5368 | printf_filtered ("%d", b->number); | |
5369 | if (b->thread == -1 && thread != -1) | |
5370 | printf_filtered (" (all threads)"); | |
5371 | else if (b->thread != -1) | |
5372 | printf_filtered (" (thread %d)", b->thread); | |
5373 | printf_filtered ("%s%s ", | |
059fb39f | 5374 | ((b->enable_state == bp_disabled |
f8eba3c6 | 5375 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
5376 | ? " (disabled)" |
5377 | : b->enable_state == bp_permanent | |
5378 | ? " (permanent)" | |
5379 | : ""), | |
5380 | (others > 1) ? "," | |
5381 | : ((others == 1) ? " and" : "")); | |
5382 | } | |
a3f17187 | 5383 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5384 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5385 | printf_filtered (".\n"); |
5386 | } | |
5387 | } | |
5388 | \f | |
c906108c | 5389 | |
e4f237da KB |
5390 | /* Return true iff it is meaningful to use the address member of |
5391 | BPT. For some breakpoint types, the address member is irrelevant | |
5392 | and it makes no sense to attempt to compare it to other addresses | |
5393 | (or use it for any other purpose either). | |
5394 | ||
4a64f543 MS |
5395 | More specifically, each of the following breakpoint types will |
5396 | always have a zero valued address and we don't want to mark | |
5397 | breakpoints of any of these types to be a duplicate of an actual | |
5398 | breakpoint at address zero: | |
e4f237da KB |
5399 | |
5400 | bp_watchpoint | |
2d134ed3 PA |
5401 | bp_catchpoint |
5402 | ||
5403 | */ | |
e4f237da KB |
5404 | |
5405 | static int | |
5406 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5407 | { | |
5408 | enum bptype type = bpt->type; | |
5409 | ||
2d134ed3 PA |
5410 | return (type != bp_watchpoint && type != bp_catchpoint); |
5411 | } | |
5412 | ||
5413 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5414 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5415 | ||
5416 | static int | |
4a64f543 MS |
5417 | watchpoint_locations_match (struct bp_location *loc1, |
5418 | struct bp_location *loc2) | |
2d134ed3 | 5419 | { |
3a5c3e22 PA |
5420 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
5421 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
5422 | ||
5423 | /* Both of them must exist. */ | |
5424 | gdb_assert (w1 != NULL); | |
5425 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 5426 | |
4a64f543 MS |
5427 | /* If the target can evaluate the condition expression in hardware, |
5428 | then we we need to insert both watchpoints even if they are at | |
5429 | the same place. Otherwise the watchpoint will only trigger when | |
5430 | the condition of whichever watchpoint was inserted evaluates to | |
5431 | true, not giving a chance for GDB to check the condition of the | |
5432 | other watchpoint. */ | |
3a5c3e22 | 5433 | if ((w1->cond_exp |
4a64f543 MS |
5434 | && target_can_accel_watchpoint_condition (loc1->address, |
5435 | loc1->length, | |
0cf6dd15 | 5436 | loc1->watchpoint_type, |
3a5c3e22 PA |
5437 | w1->cond_exp)) |
5438 | || (w2->cond_exp | |
4a64f543 MS |
5439 | && target_can_accel_watchpoint_condition (loc2->address, |
5440 | loc2->length, | |
0cf6dd15 | 5441 | loc2->watchpoint_type, |
3a5c3e22 | 5442 | w2->cond_exp))) |
0cf6dd15 TJB |
5443 | return 0; |
5444 | ||
85d721b8 PA |
5445 | /* Note that this checks the owner's type, not the location's. In |
5446 | case the target does not support read watchpoints, but does | |
5447 | support access watchpoints, we'll have bp_read_watchpoint | |
5448 | watchpoints with hw_access locations. Those should be considered | |
5449 | duplicates of hw_read locations. The hw_read locations will | |
5450 | become hw_access locations later. */ | |
2d134ed3 PA |
5451 | return (loc1->owner->type == loc2->owner->type |
5452 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5453 | && loc1->address == loc2->address | |
5454 | && loc1->length == loc2->length); | |
e4f237da KB |
5455 | } |
5456 | ||
6c95b8df PA |
5457 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5458 | same breakpoint location. In most targets, this can only be true | |
5459 | if ASPACE1 matches ASPACE2. On targets that have global | |
5460 | breakpoints, the address space doesn't really matter. */ | |
5461 | ||
5462 | static int | |
5463 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5464 | struct address_space *aspace2, CORE_ADDR addr2) | |
5465 | { | |
5466 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5467 | || aspace1 == aspace2) | |
5468 | && addr1 == addr2); | |
5469 | } | |
5470 | ||
f1310107 TJB |
5471 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5472 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5473 | matches ASPACE2. On targets that have global breakpoints, the address | |
5474 | space doesn't really matter. */ | |
5475 | ||
5476 | static int | |
5477 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5478 | int len1, struct address_space *aspace2, | |
5479 | CORE_ADDR addr2) | |
5480 | { | |
5481 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5482 | || aspace1 == aspace2) | |
5483 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5484 | } | |
5485 | ||
5486 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5487 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5488 | matches the breakpoint's address space. On targets that have global | |
5489 | breakpoints, the address space doesn't really matter. */ | |
5490 | ||
5491 | static int | |
5492 | breakpoint_location_address_match (struct bp_location *bl, | |
5493 | struct address_space *aspace, | |
5494 | CORE_ADDR addr) | |
5495 | { | |
5496 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5497 | aspace, addr) | |
5498 | || (bl->length | |
5499 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5500 | bl->address, bl->length, | |
5501 | aspace, addr))); | |
5502 | } | |
5503 | ||
1e4d1764 YQ |
5504 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
5505 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
5506 | true, otherwise returns false. */ | |
5507 | ||
5508 | static int | |
5509 | tracepoint_locations_match (struct bp_location *loc1, | |
5510 | struct bp_location *loc2) | |
5511 | { | |
5512 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
5513 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
5514 | locations at the same address of different tracepoints are regarded as | |
5515 | different locations. */ | |
5516 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
5517 | else | |
5518 | return 0; | |
5519 | } | |
5520 | ||
2d134ed3 PA |
5521 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5522 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5523 | represent the same location. */ | |
5524 | ||
5525 | static int | |
4a64f543 MS |
5526 | breakpoint_locations_match (struct bp_location *loc1, |
5527 | struct bp_location *loc2) | |
2d134ed3 | 5528 | { |
2bdf28a0 JK |
5529 | int hw_point1, hw_point2; |
5530 | ||
5531 | /* Both of them must not be in moribund_locations. */ | |
5532 | gdb_assert (loc1->owner != NULL); | |
5533 | gdb_assert (loc2->owner != NULL); | |
5534 | ||
5535 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5536 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5537 | |
5538 | if (hw_point1 != hw_point2) | |
5539 | return 0; | |
5540 | else if (hw_point1) | |
5541 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
5542 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
5543 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 5544 | else |
f1310107 TJB |
5545 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5546 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5547 | loc2->pspace->aspace, loc2->address) | |
5548 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5549 | } |
5550 | ||
76897487 KB |
5551 | static void |
5552 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5553 | int bnum, int have_bnum) | |
5554 | { | |
f63fbe86 MS |
5555 | /* The longest string possibly returned by hex_string_custom |
5556 | is 50 chars. These must be at least that big for safety. */ | |
5557 | char astr1[64]; | |
5558 | char astr2[64]; | |
76897487 | 5559 | |
bb599908 PH |
5560 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5561 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5562 | if (have_bnum) |
8a3fe4f8 | 5563 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5564 | bnum, astr1, astr2); |
5565 | else | |
8a3fe4f8 | 5566 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5567 | } |
5568 | ||
4a64f543 MS |
5569 | /* Adjust a breakpoint's address to account for architectural |
5570 | constraints on breakpoint placement. Return the adjusted address. | |
5571 | Note: Very few targets require this kind of adjustment. For most | |
5572 | targets, this function is simply the identity function. */ | |
76897487 KB |
5573 | |
5574 | static CORE_ADDR | |
a6d9a66e UW |
5575 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5576 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5577 | { |
a6d9a66e | 5578 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5579 | { |
5580 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5581 | return bpaddr; | |
5582 | } | |
88f7da05 KB |
5583 | else if (bptype == bp_watchpoint |
5584 | || bptype == bp_hardware_watchpoint | |
5585 | || bptype == bp_read_watchpoint | |
5586 | || bptype == bp_access_watchpoint | |
fe798b75 | 5587 | || bptype == bp_catchpoint) |
88f7da05 KB |
5588 | { |
5589 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5590 | have their addresses modified. */ | |
5591 | return bpaddr; | |
5592 | } | |
76897487 KB |
5593 | else |
5594 | { | |
5595 | CORE_ADDR adjusted_bpaddr; | |
5596 | ||
5597 | /* Some targets have architectural constraints on the placement | |
5598 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5599 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5600 | |
5601 | /* An adjusted breakpoint address can significantly alter | |
5602 | a user's expectations. Print a warning if an adjustment | |
5603 | is required. */ | |
5604 | if (adjusted_bpaddr != bpaddr) | |
5605 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5606 | ||
5607 | return adjusted_bpaddr; | |
5608 | } | |
5609 | } | |
5610 | ||
28010a5d PA |
5611 | void |
5612 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
5613 | struct breakpoint *owner) | |
7cc221ef | 5614 | { |
7cc221ef DJ |
5615 | memset (loc, 0, sizeof (*loc)); |
5616 | ||
348d480f PA |
5617 | gdb_assert (ops != NULL); |
5618 | ||
28010a5d PA |
5619 | loc->ops = ops; |
5620 | loc->owner = owner; | |
511a6cd4 | 5621 | loc->cond = NULL; |
0d381245 VP |
5622 | loc->shlib_disabled = 0; |
5623 | loc->enabled = 1; | |
e049a4b5 | 5624 | |
28010a5d | 5625 | switch (owner->type) |
e049a4b5 DJ |
5626 | { |
5627 | case bp_breakpoint: | |
5628 | case bp_until: | |
5629 | case bp_finish: | |
5630 | case bp_longjmp: | |
5631 | case bp_longjmp_resume: | |
186c406b TT |
5632 | case bp_exception: |
5633 | case bp_exception_resume: | |
e049a4b5 | 5634 | case bp_step_resume: |
2c03e5be | 5635 | case bp_hp_step_resume: |
e049a4b5 DJ |
5636 | case bp_watchpoint_scope: |
5637 | case bp_call_dummy: | |
aa7d318d | 5638 | case bp_std_terminate: |
e049a4b5 DJ |
5639 | case bp_shlib_event: |
5640 | case bp_thread_event: | |
5641 | case bp_overlay_event: | |
4efc6507 | 5642 | case bp_jit_event: |
0fd8e87f | 5643 | case bp_longjmp_master: |
aa7d318d | 5644 | case bp_std_terminate_master: |
186c406b | 5645 | case bp_exception_master: |
0e30163f JK |
5646 | case bp_gnu_ifunc_resolver: |
5647 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5648 | loc->loc_type = bp_loc_software_breakpoint; |
5649 | break; | |
5650 | case bp_hardware_breakpoint: | |
5651 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5652 | break; | |
5653 | case bp_hardware_watchpoint: | |
5654 | case bp_read_watchpoint: | |
5655 | case bp_access_watchpoint: | |
5656 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5657 | break; | |
5658 | case bp_watchpoint: | |
ce78b96d | 5659 | case bp_catchpoint: |
15c3d785 PA |
5660 | case bp_tracepoint: |
5661 | case bp_fast_tracepoint: | |
0fb4aa4b | 5662 | case bp_static_tracepoint: |
e049a4b5 DJ |
5663 | loc->loc_type = bp_loc_other; |
5664 | break; | |
5665 | default: | |
e2e0b3e5 | 5666 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5667 | } |
5668 | ||
f431efe5 | 5669 | loc->refc = 1; |
28010a5d PA |
5670 | } |
5671 | ||
5672 | /* Allocate a struct bp_location. */ | |
5673 | ||
5674 | static struct bp_location * | |
5675 | allocate_bp_location (struct breakpoint *bpt) | |
5676 | { | |
348d480f PA |
5677 | return bpt->ops->allocate_location (bpt); |
5678 | } | |
7cc221ef | 5679 | |
f431efe5 PA |
5680 | static void |
5681 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 5682 | { |
348d480f | 5683 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
5684 | xfree (loc); |
5685 | } | |
5686 | ||
f431efe5 PA |
5687 | /* Increment reference count. */ |
5688 | ||
5689 | static void | |
5690 | incref_bp_location (struct bp_location *bl) | |
5691 | { | |
5692 | ++bl->refc; | |
5693 | } | |
5694 | ||
5695 | /* Decrement reference count. If the reference count reaches 0, | |
5696 | destroy the bp_location. Sets *BLP to NULL. */ | |
5697 | ||
5698 | static void | |
5699 | decref_bp_location (struct bp_location **blp) | |
5700 | { | |
0807b50c PA |
5701 | gdb_assert ((*blp)->refc > 0); |
5702 | ||
f431efe5 PA |
5703 | if (--(*blp)->refc == 0) |
5704 | free_bp_location (*blp); | |
5705 | *blp = NULL; | |
5706 | } | |
5707 | ||
346774a9 | 5708 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 5709 | |
346774a9 PA |
5710 | static void |
5711 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 5712 | { |
346774a9 | 5713 | struct breakpoint *b1; |
c906108c | 5714 | |
346774a9 PA |
5715 | /* Add this breakpoint to the end of the chain so that a list of |
5716 | breakpoints will come out in order of increasing numbers. */ | |
5717 | ||
5718 | b1 = breakpoint_chain; | |
5719 | if (b1 == 0) | |
5720 | breakpoint_chain = b; | |
5721 | else | |
5722 | { | |
5723 | while (b1->next) | |
5724 | b1 = b1->next; | |
5725 | b1->next = b; | |
5726 | } | |
5727 | } | |
5728 | ||
5729 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
5730 | ||
5731 | static void | |
5732 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
5733 | struct gdbarch *gdbarch, | |
28010a5d | 5734 | enum bptype bptype, |
c0a91b2b | 5735 | const struct breakpoint_ops *ops) |
346774a9 | 5736 | { |
c906108c | 5737 | memset (b, 0, sizeof (*b)); |
2219d63c | 5738 | |
348d480f PA |
5739 | gdb_assert (ops != NULL); |
5740 | ||
28010a5d | 5741 | b->ops = ops; |
4d28f7a8 | 5742 | b->type = bptype; |
a6d9a66e | 5743 | b->gdbarch = gdbarch; |
c906108c SS |
5744 | b->language = current_language->la_language; |
5745 | b->input_radix = input_radix; | |
5746 | b->thread = -1; | |
b5de0fa7 | 5747 | b->enable_state = bp_enabled; |
c906108c SS |
5748 | b->next = 0; |
5749 | b->silent = 0; | |
5750 | b->ignore_count = 0; | |
5751 | b->commands = NULL; | |
818dd999 | 5752 | b->frame_id = null_frame_id; |
0d381245 | 5753 | b->condition_not_parsed = 0; |
84f4c1fe | 5754 | b->py_bp_object = NULL; |
d0fb5eae | 5755 | b->related_breakpoint = b; |
346774a9 PA |
5756 | } |
5757 | ||
5758 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
5759 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
5760 | |
5761 | static struct breakpoint * | |
5762 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 5763 | enum bptype bptype, |
c0a91b2b | 5764 | const struct breakpoint_ops *ops) |
346774a9 PA |
5765 | { |
5766 | struct breakpoint *b = XNEW (struct breakpoint); | |
5767 | ||
348d480f | 5768 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 5769 | add_to_breakpoint_chain (b); |
0d381245 VP |
5770 | return b; |
5771 | } | |
5772 | ||
0e30163f JK |
5773 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5774 | resolutions should be made as the user specified the location explicitly | |
5775 | enough. */ | |
5776 | ||
0d381245 | 5777 | static void |
0e30163f | 5778 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5779 | { |
2bdf28a0 JK |
5780 | gdb_assert (loc->owner != NULL); |
5781 | ||
0d381245 | 5782 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5783 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5784 | || is_tracepoint (loc->owner)) |
0d381245 | 5785 | { |
0e30163f JK |
5786 | int is_gnu_ifunc; |
5787 | ||
5788 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5789 | NULL, NULL, &is_gnu_ifunc); | |
5790 | ||
5791 | if (is_gnu_ifunc && !explicit_loc) | |
5792 | { | |
5793 | struct breakpoint *b = loc->owner; | |
5794 | ||
5795 | gdb_assert (loc->pspace == current_program_space); | |
5796 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5797 | &loc->requested_address)) | |
5798 | { | |
5799 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5800 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5801 | loc->requested_address, | |
5802 | b->type); | |
5803 | } | |
5804 | else if (b->type == bp_breakpoint && b->loc == loc | |
5805 | && loc->next == NULL && b->related_breakpoint == b) | |
5806 | { | |
5807 | /* Create only the whole new breakpoint of this type but do not | |
5808 | mess more complicated breakpoints with multiple locations. */ | |
5809 | b->type = bp_gnu_ifunc_resolver; | |
5810 | } | |
5811 | } | |
5812 | ||
0d381245 VP |
5813 | if (loc->function_name) |
5814 | loc->function_name = xstrdup (loc->function_name); | |
5815 | } | |
5816 | } | |
5817 | ||
a6d9a66e | 5818 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 5819 | struct gdbarch * |
a6d9a66e UW |
5820 | get_sal_arch (struct symtab_and_line sal) |
5821 | { | |
5822 | if (sal.section) | |
5823 | return get_objfile_arch (sal.section->objfile); | |
5824 | if (sal.symtab) | |
5825 | return get_objfile_arch (sal.symtab->objfile); | |
5826 | ||
5827 | return NULL; | |
5828 | } | |
5829 | ||
346774a9 PA |
5830 | /* Low level routine for partially initializing a breakpoint of type |
5831 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 5832 | file name, and line number are provided by SAL. |
0d381245 VP |
5833 | |
5834 | It is expected that the caller will complete the initialization of | |
5835 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 5836 | information regarding the creation of a new breakpoint. */ |
0d381245 | 5837 | |
346774a9 PA |
5838 | static void |
5839 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 5840 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5841 | const struct breakpoint_ops *ops) |
0d381245 | 5842 | { |
28010a5d | 5843 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 5844 | |
3742cc8b | 5845 | add_location_to_breakpoint (b, &sal); |
0d381245 | 5846 | |
6c95b8df PA |
5847 | if (bptype != bp_catchpoint) |
5848 | gdb_assert (sal.pspace != NULL); | |
5849 | ||
f8eba3c6 TT |
5850 | /* Store the program space that was used to set the breakpoint, |
5851 | except for ordinary breakpoints, which are independent of the | |
5852 | program space. */ | |
5853 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
5854 | b->pspace = sal.pspace; | |
0d381245 | 5855 | |
c906108c | 5856 | breakpoints_changed (); |
346774a9 | 5857 | } |
c906108c | 5858 | |
346774a9 PA |
5859 | /* set_raw_breakpoint is a low level routine for allocating and |
5860 | partially initializing a breakpoint of type BPTYPE. The newly | |
5861 | created breakpoint's address, section, source file name, and line | |
5862 | number are provided by SAL. The newly created and partially | |
5863 | initialized breakpoint is added to the breakpoint chain and | |
5864 | is also returned as the value of this function. | |
5865 | ||
5866 | It is expected that the caller will complete the initialization of | |
5867 | the newly created breakpoint struct as well as output any status | |
5868 | information regarding the creation of a new breakpoint. In | |
5869 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5870 | number! Care should be taken to not allow an error to occur | |
5871 | prior to completing the initialization of the breakpoint. If this | |
5872 | should happen, a bogus breakpoint will be left on the chain. */ | |
5873 | ||
5874 | struct breakpoint * | |
5875 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 5876 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5877 | const struct breakpoint_ops *ops) |
346774a9 PA |
5878 | { |
5879 | struct breakpoint *b = XNEW (struct breakpoint); | |
5880 | ||
348d480f | 5881 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 5882 | add_to_breakpoint_chain (b); |
c906108c SS |
5883 | return b; |
5884 | } | |
5885 | ||
c2c6d25f JM |
5886 | |
5887 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5888 | instruction, hard-wired into the inferior's code. */ | |
5889 | void | |
5890 | make_breakpoint_permanent (struct breakpoint *b) | |
5891 | { | |
0d381245 | 5892 | struct bp_location *bl; |
cc59ec59 | 5893 | |
b5de0fa7 | 5894 | b->enable_state = bp_permanent; |
c2c6d25f | 5895 | |
4a64f543 MS |
5896 | /* By definition, permanent breakpoints are already present in the |
5897 | code. Mark all locations as inserted. For now, | |
5898 | make_breakpoint_permanent is called in just one place, so it's | |
5899 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 5900 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
5901 | for (bl = b->loc; bl; bl = bl->next) |
5902 | bl->inserted = 1; | |
c2c6d25f JM |
5903 | } |
5904 | ||
53a5351d | 5905 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5906 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5907 | initiated the operation. */ | |
c906108c SS |
5908 | |
5909 | void | |
186c406b | 5910 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5911 | { |
35df4500 | 5912 | struct breakpoint *b, *b_tmp; |
186c406b | 5913 | int thread = tp->num; |
0fd8e87f UW |
5914 | |
5915 | /* To avoid having to rescan all objfile symbols at every step, | |
5916 | we maintain a list of continually-inserted but always disabled | |
5917 | longjmp "master" breakpoints. Here, we simply create momentary | |
5918 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5919 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5920 | if (b->pspace == current_program_space |
186c406b TT |
5921 | && (b->type == bp_longjmp_master |
5922 | || b->type == bp_exception_master)) | |
0fd8e87f | 5923 | { |
06edf0c0 PA |
5924 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
5925 | struct breakpoint *clone; | |
cc59ec59 | 5926 | |
06edf0c0 PA |
5927 | clone = momentary_breakpoint_from_master (b, type, |
5928 | &momentary_breakpoint_ops); | |
0fd8e87f UW |
5929 | clone->thread = thread; |
5930 | } | |
186c406b TT |
5931 | |
5932 | tp->initiating_frame = frame; | |
c906108c SS |
5933 | } |
5934 | ||
611c83ae | 5935 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5936 | void |
611c83ae | 5937 | delete_longjmp_breakpoint (int thread) |
c906108c | 5938 | { |
35df4500 | 5939 | struct breakpoint *b, *b_tmp; |
c906108c | 5940 | |
35df4500 | 5941 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5942 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5943 | { |
5944 | if (b->thread == thread) | |
5945 | delete_breakpoint (b); | |
5946 | } | |
c906108c SS |
5947 | } |
5948 | ||
1900040c MS |
5949 | void |
5950 | enable_overlay_breakpoints (void) | |
5951 | { | |
52f0bd74 | 5952 | struct breakpoint *b; |
1900040c MS |
5953 | |
5954 | ALL_BREAKPOINTS (b) | |
5955 | if (b->type == bp_overlay_event) | |
5956 | { | |
5957 | b->enable_state = bp_enabled; | |
b60e7edf | 5958 | update_global_location_list (1); |
c02f5703 | 5959 | overlay_events_enabled = 1; |
1900040c MS |
5960 | } |
5961 | } | |
5962 | ||
5963 | void | |
5964 | disable_overlay_breakpoints (void) | |
5965 | { | |
52f0bd74 | 5966 | struct breakpoint *b; |
1900040c MS |
5967 | |
5968 | ALL_BREAKPOINTS (b) | |
5969 | if (b->type == bp_overlay_event) | |
5970 | { | |
5971 | b->enable_state = bp_disabled; | |
b60e7edf | 5972 | update_global_location_list (0); |
c02f5703 | 5973 | overlay_events_enabled = 0; |
1900040c MS |
5974 | } |
5975 | } | |
5976 | ||
aa7d318d TT |
5977 | /* Set an active std::terminate breakpoint for each std::terminate |
5978 | master breakpoint. */ | |
5979 | void | |
5980 | set_std_terminate_breakpoint (void) | |
5981 | { | |
35df4500 | 5982 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5983 | |
35df4500 | 5984 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5985 | if (b->pspace == current_program_space |
5986 | && b->type == bp_std_terminate_master) | |
5987 | { | |
06edf0c0 PA |
5988 | momentary_breakpoint_from_master (b, bp_std_terminate, |
5989 | &momentary_breakpoint_ops); | |
aa7d318d TT |
5990 | } |
5991 | } | |
5992 | ||
5993 | /* Delete all the std::terminate breakpoints. */ | |
5994 | void | |
5995 | delete_std_terminate_breakpoint (void) | |
5996 | { | |
35df4500 | 5997 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5998 | |
35df4500 | 5999 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6000 | if (b->type == bp_std_terminate) |
6001 | delete_breakpoint (b); | |
6002 | } | |
6003 | ||
c4093a6a | 6004 | struct breakpoint * |
a6d9a66e | 6005 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6006 | { |
6007 | struct breakpoint *b; | |
c4093a6a | 6008 | |
06edf0c0 PA |
6009 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
6010 | &internal_breakpoint_ops); | |
6011 | ||
b5de0fa7 | 6012 | b->enable_state = bp_enabled; |
c4093a6a | 6013 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6014 | b->addr_string |
6015 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6016 | |
b60e7edf | 6017 | update_global_location_list_nothrow (1); |
74960c60 | 6018 | |
c4093a6a JM |
6019 | return b; |
6020 | } | |
6021 | ||
6022 | void | |
6023 | remove_thread_event_breakpoints (void) | |
6024 | { | |
35df4500 | 6025 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6026 | |
35df4500 | 6027 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6028 | if (b->type == bp_thread_event |
6029 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6030 | delete_breakpoint (b); |
6031 | } | |
6032 | ||
0101ce28 JJ |
6033 | struct lang_and_radix |
6034 | { | |
6035 | enum language lang; | |
6036 | int radix; | |
6037 | }; | |
6038 | ||
4efc6507 DE |
6039 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6040 | ||
6041 | struct breakpoint * | |
6042 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6043 | { | |
6044 | struct breakpoint *b; | |
6045 | ||
06edf0c0 PA |
6046 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
6047 | &internal_breakpoint_ops); | |
4efc6507 DE |
6048 | update_global_location_list_nothrow (1); |
6049 | return b; | |
6050 | } | |
0101ce28 | 6051 | |
03673fc7 PP |
6052 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6053 | ||
6054 | void | |
6055 | remove_jit_event_breakpoints (void) | |
6056 | { | |
6057 | struct breakpoint *b, *b_tmp; | |
6058 | ||
6059 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6060 | if (b->type == bp_jit_event | |
6061 | && b->loc->pspace == current_program_space) | |
6062 | delete_breakpoint (b); | |
6063 | } | |
6064 | ||
cae688ec JJ |
6065 | void |
6066 | remove_solib_event_breakpoints (void) | |
6067 | { | |
35df4500 | 6068 | struct breakpoint *b, *b_tmp; |
cae688ec | 6069 | |
35df4500 | 6070 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6071 | if (b->type == bp_shlib_event |
6072 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6073 | delete_breakpoint (b); |
6074 | } | |
6075 | ||
6076 | struct breakpoint * | |
a6d9a66e | 6077 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6078 | { |
6079 | struct breakpoint *b; | |
6080 | ||
06edf0c0 PA |
6081 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
6082 | &internal_breakpoint_ops); | |
b60e7edf | 6083 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6084 | return b; |
6085 | } | |
6086 | ||
6087 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6088 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6089 | ||
6090 | void | |
cb851954 | 6091 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6092 | { |
876fa593 | 6093 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6094 | |
876fa593 | 6095 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6096 | { |
2bdf28a0 | 6097 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6098 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6099 | |
4a64f543 MS |
6100 | /* We apply the check to all breakpoints, including disabled for |
6101 | those with loc->duplicate set. This is so that when breakpoint | |
6102 | becomes enabled, or the duplicate is removed, gdb will try to | |
6103 | insert all breakpoints. If we don't set shlib_disabled here, | |
6104 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6105 | if (((b->type == bp_breakpoint) |
508ccb1f | 6106 | || (b->type == bp_jit_event) |
1042e4c0 | 6107 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6108 | || (is_tracepoint (b))) |
6c95b8df | 6109 | && loc->pspace == current_program_space |
0d381245 | 6110 | && !loc->shlib_disabled |
a77053c2 | 6111 | #ifdef PC_SOLIB |
0d381245 | 6112 | && PC_SOLIB (loc->address) |
a77053c2 | 6113 | #else |
6c95b8df | 6114 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6115 | #endif |
6116 | ) | |
0d381245 VP |
6117 | { |
6118 | loc->shlib_disabled = 1; | |
6119 | } | |
cae688ec JJ |
6120 | } |
6121 | } | |
6122 | ||
1e4d1764 YQ |
6123 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
6124 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 6125 | disabled. */ |
84acb35a | 6126 | |
75149521 | 6127 | static void |
84acb35a JJ |
6128 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6129 | { | |
876fa593 | 6130 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6131 | int disabled_shlib_breaks = 0; |
6132 | ||
c86cf029 VP |
6133 | /* SunOS a.out shared libraries are always mapped, so do not |
6134 | disable breakpoints; they will only be reported as unloaded | |
6135 | through clear_solib when GDB discards its shared library | |
6136 | list. See clear_solib for more information. */ | |
6137 | if (exec_bfd != NULL | |
6138 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6139 | return; | |
6140 | ||
876fa593 | 6141 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6142 | { |
2bdf28a0 | 6143 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6144 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6145 | |
1e4d1764 | 6146 | if (solib->pspace == loc->pspace |
e2dd7057 | 6147 | && !loc->shlib_disabled |
1e4d1764 YQ |
6148 | && (((b->type == bp_breakpoint |
6149 | || b->type == bp_jit_event | |
6150 | || b->type == bp_hardware_breakpoint) | |
6151 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
6152 | || loc->loc_type == bp_loc_software_breakpoint)) | |
6153 | || is_tracepoint (b)) | |
e2dd7057 | 6154 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6155 | { |
e2dd7057 PP |
6156 | loc->shlib_disabled = 1; |
6157 | /* At this point, we cannot rely on remove_breakpoint | |
6158 | succeeding so we must mark the breakpoint as not inserted | |
6159 | to prevent future errors occurring in remove_breakpoints. */ | |
6160 | loc->inserted = 0; | |
8d3788bd VP |
6161 | |
6162 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6163 | observer_notify_breakpoint_modified (b); | |
6164 | ||
e2dd7057 PP |
6165 | if (!disabled_shlib_breaks) |
6166 | { | |
6167 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6168 | warning (_("Temporarily disabling breakpoints " |
6169 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6170 | solib->so_name); |
84acb35a | 6171 | } |
e2dd7057 | 6172 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6173 | } |
6174 | } | |
84acb35a JJ |
6175 | } |
6176 | ||
ce78b96d JB |
6177 | /* FORK & VFORK catchpoints. */ |
6178 | ||
e29a4733 PA |
6179 | /* An instance of this type is used to represent a fork or vfork |
6180 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
6181 | class; users downcast to "struct breakpoint *" when needed. A | |
6182 | breakpoint is really of this type iff its ops pointer points to | |
6183 | CATCH_FORK_BREAKPOINT_OPS. */ | |
6184 | ||
6185 | struct fork_catchpoint | |
6186 | { | |
6187 | /* The base class. */ | |
6188 | struct breakpoint base; | |
6189 | ||
6190 | /* Process id of a child process whose forking triggered this | |
6191 | catchpoint. This field is only valid immediately after this | |
6192 | catchpoint has triggered. */ | |
6193 | ptid_t forked_inferior_pid; | |
6194 | }; | |
6195 | ||
4a64f543 MS |
6196 | /* Implement the "insert" breakpoint_ops method for fork |
6197 | catchpoints. */ | |
ce78b96d | 6198 | |
77b06cd7 TJB |
6199 | static int |
6200 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6201 | { |
77b06cd7 | 6202 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6203 | } |
6204 | ||
4a64f543 MS |
6205 | /* Implement the "remove" breakpoint_ops method for fork |
6206 | catchpoints. */ | |
ce78b96d JB |
6207 | |
6208 | static int | |
77b06cd7 | 6209 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6210 | { |
6211 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6212 | } | |
6213 | ||
6214 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6215 | catchpoints. */ | |
6216 | ||
6217 | static int | |
f1310107 TJB |
6218 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6219 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6220 | { |
e29a4733 PA |
6221 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6222 | ||
6223 | return inferior_has_forked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6224 | } |
6225 | ||
4a64f543 MS |
6226 | /* Implement the "print_it" breakpoint_ops method for fork |
6227 | catchpoints. */ | |
ce78b96d JB |
6228 | |
6229 | static enum print_stop_action | |
348d480f | 6230 | print_it_catch_fork (bpstat bs) |
ce78b96d | 6231 | { |
36dfb11c | 6232 | struct ui_out *uiout = current_uiout; |
348d480f PA |
6233 | struct breakpoint *b = bs->breakpoint_at; |
6234 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 6235 | |
ce78b96d | 6236 | annotate_catchpoint (b->number); |
36dfb11c TT |
6237 | if (b->disposition == disp_del) |
6238 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6239 | else | |
6240 | ui_out_text (uiout, "\nCatchpoint "); | |
6241 | if (ui_out_is_mi_like_p (uiout)) | |
6242 | { | |
6243 | ui_out_field_string (uiout, "reason", | |
6244 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
6245 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6246 | } | |
6247 | ui_out_field_int (uiout, "bkptno", b->number); | |
6248 | ui_out_text (uiout, " (forked process "); | |
6249 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6250 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6251 | return PRINT_SRC_AND_LOC; |
6252 | } | |
6253 | ||
4a64f543 MS |
6254 | /* Implement the "print_one" breakpoint_ops method for fork |
6255 | catchpoints. */ | |
ce78b96d JB |
6256 | |
6257 | static void | |
a6d9a66e | 6258 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6259 | { |
e29a4733 | 6260 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6261 | struct value_print_options opts; |
79a45e25 | 6262 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6263 | |
6264 | get_user_print_options (&opts); | |
6265 | ||
4a64f543 MS |
6266 | /* Field 4, the address, is omitted (which makes the columns not |
6267 | line up too nicely with the headers, but the effect is relatively | |
6268 | readable). */ | |
79a45b7d | 6269 | if (opts.addressprint) |
ce78b96d JB |
6270 | ui_out_field_skip (uiout, "addr"); |
6271 | annotate_field (5); | |
6272 | ui_out_text (uiout, "fork"); | |
e29a4733 | 6273 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6274 | { |
6275 | ui_out_text (uiout, ", process "); | |
6276 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6277 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6278 | ui_out_spaces (uiout, 1); |
6279 | } | |
6280 | } | |
6281 | ||
6282 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6283 | catchpoints. */ | |
6284 | ||
6285 | static void | |
6286 | print_mention_catch_fork (struct breakpoint *b) | |
6287 | { | |
6288 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6289 | } | |
6290 | ||
6149aea9 PA |
6291 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6292 | catchpoints. */ | |
6293 | ||
6294 | static void | |
6295 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6296 | { | |
6297 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 6298 | print_recreate_thread (b, fp); |
6149aea9 PA |
6299 | } |
6300 | ||
ce78b96d JB |
6301 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6302 | ||
2060206e | 6303 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 6304 | |
4a64f543 MS |
6305 | /* Implement the "insert" breakpoint_ops method for vfork |
6306 | catchpoints. */ | |
ce78b96d | 6307 | |
77b06cd7 TJB |
6308 | static int |
6309 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6310 | { |
77b06cd7 | 6311 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6312 | } |
6313 | ||
4a64f543 MS |
6314 | /* Implement the "remove" breakpoint_ops method for vfork |
6315 | catchpoints. */ | |
ce78b96d JB |
6316 | |
6317 | static int | |
77b06cd7 | 6318 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6319 | { |
6320 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6321 | } | |
6322 | ||
6323 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6324 | catchpoints. */ | |
6325 | ||
6326 | static int | |
f1310107 TJB |
6327 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6328 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6329 | { |
e29a4733 PA |
6330 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6331 | ||
6332 | return inferior_has_vforked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6333 | } |
6334 | ||
4a64f543 MS |
6335 | /* Implement the "print_it" breakpoint_ops method for vfork |
6336 | catchpoints. */ | |
ce78b96d JB |
6337 | |
6338 | static enum print_stop_action | |
348d480f | 6339 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 6340 | { |
36dfb11c | 6341 | struct ui_out *uiout = current_uiout; |
348d480f | 6342 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
6343 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
6344 | ||
ce78b96d | 6345 | annotate_catchpoint (b->number); |
36dfb11c TT |
6346 | if (b->disposition == disp_del) |
6347 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6348 | else | |
6349 | ui_out_text (uiout, "\nCatchpoint "); | |
6350 | if (ui_out_is_mi_like_p (uiout)) | |
6351 | { | |
6352 | ui_out_field_string (uiout, "reason", | |
6353 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
6354 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6355 | } | |
6356 | ui_out_field_int (uiout, "bkptno", b->number); | |
6357 | ui_out_text (uiout, " (vforked process "); | |
6358 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6359 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6360 | return PRINT_SRC_AND_LOC; |
6361 | } | |
6362 | ||
4a64f543 MS |
6363 | /* Implement the "print_one" breakpoint_ops method for vfork |
6364 | catchpoints. */ | |
ce78b96d JB |
6365 | |
6366 | static void | |
a6d9a66e | 6367 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6368 | { |
e29a4733 | 6369 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6370 | struct value_print_options opts; |
79a45e25 | 6371 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6372 | |
6373 | get_user_print_options (&opts); | |
4a64f543 MS |
6374 | /* Field 4, the address, is omitted (which makes the columns not |
6375 | line up too nicely with the headers, but the effect is relatively | |
6376 | readable). */ | |
79a45b7d | 6377 | if (opts.addressprint) |
ce78b96d JB |
6378 | ui_out_field_skip (uiout, "addr"); |
6379 | annotate_field (5); | |
6380 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 6381 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6382 | { |
6383 | ui_out_text (uiout, ", process "); | |
6384 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6385 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6386 | ui_out_spaces (uiout, 1); |
6387 | } | |
6388 | } | |
6389 | ||
6390 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6391 | catchpoints. */ | |
6392 | ||
6393 | static void | |
6394 | print_mention_catch_vfork (struct breakpoint *b) | |
6395 | { | |
6396 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6397 | } | |
6398 | ||
6149aea9 PA |
6399 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6400 | catchpoints. */ | |
6401 | ||
6402 | static void | |
6403 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6404 | { | |
6405 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 6406 | print_recreate_thread (b, fp); |
6149aea9 PA |
6407 | } |
6408 | ||
ce78b96d JB |
6409 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6410 | ||
2060206e | 6411 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 6412 | |
be5c67c1 PA |
6413 | /* An instance of this type is used to represent a syscall catchpoint. |
6414 | It includes a "struct breakpoint" as a kind of base class; users | |
6415 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6416 | really of this type iff its ops pointer points to | |
6417 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
6418 | ||
6419 | struct syscall_catchpoint | |
6420 | { | |
6421 | /* The base class. */ | |
6422 | struct breakpoint base; | |
6423 | ||
6424 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
6425 | syscall has been specified for filtering, its value is NULL. | |
6426 | Otherwise, it holds a list of all syscalls to be caught. The | |
6427 | list elements are allocated with xmalloc. */ | |
6428 | VEC(int) *syscalls_to_be_caught; | |
6429 | }; | |
6430 | ||
6431 | /* Implement the "dtor" breakpoint_ops method for syscall | |
6432 | catchpoints. */ | |
6433 | ||
6434 | static void | |
6435 | dtor_catch_syscall (struct breakpoint *b) | |
6436 | { | |
6437 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
6438 | ||
6439 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 6440 | |
2060206e | 6441 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
6442 | } |
6443 | ||
a96d9b2e SDJ |
6444 | /* Implement the "insert" breakpoint_ops method for syscall |
6445 | catchpoints. */ | |
6446 | ||
77b06cd7 TJB |
6447 | static int |
6448 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 6449 | { |
be5c67c1 | 6450 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6451 | struct inferior *inf = current_inferior (); |
6452 | ||
6453 | ++inf->total_syscalls_count; | |
be5c67c1 | 6454 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6455 | ++inf->any_syscall_count; |
6456 | else | |
6457 | { | |
6458 | int i, iter; | |
cc59ec59 | 6459 | |
a96d9b2e | 6460 | for (i = 0; |
be5c67c1 | 6461 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6462 | i++) |
6463 | { | |
6464 | int elem; | |
cc59ec59 | 6465 | |
a96d9b2e SDJ |
6466 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6467 | { | |
6468 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6469 | uintptr_t vec_addr_offset |
6470 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6471 | uintptr_t vec_addr; |
6472 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6473 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6474 | vec_addr_offset; | |
6475 | memset ((void *) vec_addr, 0, | |
6476 | (iter + 1 - old_size) * sizeof (int)); | |
6477 | } | |
6478 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6479 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6480 | } | |
6481 | } | |
6482 | ||
77b06cd7 TJB |
6483 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6484 | inf->total_syscalls_count != 0, | |
6485 | inf->any_syscall_count, | |
6486 | VEC_length (int, inf->syscalls_counts), | |
6487 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6488 | } |
6489 | ||
6490 | /* Implement the "remove" breakpoint_ops method for syscall | |
6491 | catchpoints. */ | |
6492 | ||
6493 | static int | |
77b06cd7 | 6494 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 6495 | { |
be5c67c1 | 6496 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6497 | struct inferior *inf = current_inferior (); |
6498 | ||
6499 | --inf->total_syscalls_count; | |
be5c67c1 | 6500 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6501 | --inf->any_syscall_count; |
6502 | else | |
6503 | { | |
6504 | int i, iter; | |
cc59ec59 | 6505 | |
a96d9b2e | 6506 | for (i = 0; |
be5c67c1 | 6507 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6508 | i++) |
6509 | { | |
6510 | int elem; | |
6511 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6512 | /* Shouldn't happen. */ | |
6513 | continue; | |
6514 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6515 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6516 | } | |
6517 | } | |
6518 | ||
6519 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6520 | inf->total_syscalls_count != 0, | |
6521 | inf->any_syscall_count, | |
6522 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6523 | VEC_address (int, |
6524 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6525 | } |
6526 | ||
6527 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6528 | catchpoints. */ | |
6529 | ||
6530 | static int | |
f1310107 TJB |
6531 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6532 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6533 | { |
4a64f543 MS |
6534 | /* We must check if we are catching specific syscalls in this |
6535 | breakpoint. If we are, then we must guarantee that the called | |
6536 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6537 | int syscall_number = 0; |
be5c67c1 PA |
6538 | const struct syscall_catchpoint *c |
6539 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e SDJ |
6540 | |
6541 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6542 | return 0; | |
6543 | ||
6544 | /* Now, checking if the syscall is the same. */ | |
be5c67c1 | 6545 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6546 | { |
6547 | int i, iter; | |
cc59ec59 | 6548 | |
a96d9b2e | 6549 | for (i = 0; |
be5c67c1 | 6550 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6551 | i++) |
6552 | if (syscall_number == iter) | |
6553 | break; | |
6554 | /* Not the same. */ | |
6555 | if (!iter) | |
6556 | return 0; | |
6557 | } | |
6558 | ||
6559 | return 1; | |
6560 | } | |
6561 | ||
6562 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6563 | catchpoints. */ | |
6564 | ||
6565 | static enum print_stop_action | |
348d480f | 6566 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 6567 | { |
36dfb11c | 6568 | struct ui_out *uiout = current_uiout; |
348d480f | 6569 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
6570 | /* These are needed because we want to know in which state a |
6571 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6572 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6573 | must print "called syscall" or "returned from syscall". */ | |
6574 | ptid_t ptid; | |
6575 | struct target_waitstatus last; | |
6576 | struct syscall s; | |
a96d9b2e SDJ |
6577 | char *syscall_id; |
6578 | ||
6579 | get_last_target_status (&ptid, &last); | |
6580 | ||
6581 | get_syscall_by_number (last.value.syscall_number, &s); | |
6582 | ||
6583 | annotate_catchpoint (b->number); | |
6584 | ||
36dfb11c TT |
6585 | if (b->disposition == disp_del) |
6586 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 6587 | else |
36dfb11c TT |
6588 | ui_out_text (uiout, "\nCatchpoint "); |
6589 | if (ui_out_is_mi_like_p (uiout)) | |
6590 | { | |
6591 | ui_out_field_string (uiout, "reason", | |
6592 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
6593 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
6594 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
6595 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6596 | } | |
6597 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
6598 | |
6599 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
6600 | ui_out_text (uiout, " (call to syscall "); |
6601 | else | |
6602 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 6603 | |
36dfb11c TT |
6604 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
6605 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
6606 | if (s.name != NULL) | |
6607 | ui_out_field_string (uiout, "syscall-name", s.name); | |
6608 | ||
6609 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
6610 | |
6611 | return PRINT_SRC_AND_LOC; | |
6612 | } | |
6613 | ||
6614 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6615 | catchpoints. */ | |
6616 | ||
6617 | static void | |
6618 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6619 | struct bp_location **last_loc) |
a96d9b2e | 6620 | { |
be5c67c1 | 6621 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 6622 | struct value_print_options opts; |
79a45e25 | 6623 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
6624 | |
6625 | get_user_print_options (&opts); | |
4a64f543 MS |
6626 | /* Field 4, the address, is omitted (which makes the columns not |
6627 | line up too nicely with the headers, but the effect is relatively | |
6628 | readable). */ | |
a96d9b2e SDJ |
6629 | if (opts.addressprint) |
6630 | ui_out_field_skip (uiout, "addr"); | |
6631 | annotate_field (5); | |
6632 | ||
be5c67c1 PA |
6633 | if (c->syscalls_to_be_caught |
6634 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
6635 | ui_out_text (uiout, "syscalls \""); |
6636 | else | |
6637 | ui_out_text (uiout, "syscall \""); | |
6638 | ||
be5c67c1 | 6639 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6640 | { |
6641 | int i, iter; | |
6642 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6643 | |
a96d9b2e | 6644 | for (i = 0; |
be5c67c1 | 6645 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6646 | i++) |
6647 | { | |
6648 | char *x = text; | |
6649 | struct syscall s; | |
6650 | get_syscall_by_number (iter, &s); | |
6651 | ||
6652 | if (s.name != NULL) | |
6653 | text = xstrprintf ("%s%s, ", text, s.name); | |
6654 | else | |
6655 | text = xstrprintf ("%s%d, ", text, iter); | |
6656 | ||
6657 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 6658 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
6659 | on every call. */ |
6660 | xfree (x); | |
6661 | } | |
6662 | /* Remove the last comma. */ | |
6663 | text[strlen (text) - 2] = '\0'; | |
6664 | ui_out_field_string (uiout, "what", text); | |
6665 | } | |
6666 | else | |
6667 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6668 | ui_out_text (uiout, "\" "); | |
6669 | } | |
6670 | ||
6671 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6672 | catchpoints. */ | |
6673 | ||
6674 | static void | |
6675 | print_mention_catch_syscall (struct breakpoint *b) | |
6676 | { | |
be5c67c1 PA |
6677 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6678 | ||
6679 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
6680 | { |
6681 | int i, iter; | |
6682 | ||
be5c67c1 | 6683 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
6684 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
6685 | else | |
6686 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6687 | ||
6688 | for (i = 0; | |
be5c67c1 | 6689 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6690 | i++) |
6691 | { | |
6692 | struct syscall s; | |
6693 | get_syscall_by_number (iter, &s); | |
6694 | ||
6695 | if (s.name) | |
6696 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6697 | else | |
6698 | printf_filtered (" %d", s.number); | |
6699 | } | |
6700 | printf_filtered (")"); | |
6701 | } | |
6702 | else | |
6703 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6704 | b->number); | |
6705 | } | |
6706 | ||
6149aea9 PA |
6707 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6708 | catchpoints. */ | |
6709 | ||
6710 | static void | |
6711 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6712 | { | |
be5c67c1 PA |
6713 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6714 | ||
6149aea9 PA |
6715 | fprintf_unfiltered (fp, "catch syscall"); |
6716 | ||
be5c67c1 | 6717 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
6718 | { |
6719 | int i, iter; | |
6720 | ||
6721 | for (i = 0; | |
be5c67c1 | 6722 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
6723 | i++) |
6724 | { | |
6725 | struct syscall s; | |
6726 | ||
6727 | get_syscall_by_number (iter, &s); | |
6728 | if (s.name) | |
6729 | fprintf_unfiltered (fp, " %s", s.name); | |
6730 | else | |
6731 | fprintf_unfiltered (fp, " %d", s.number); | |
6732 | } | |
6733 | } | |
d9b3f62e | 6734 | print_recreate_thread (b, fp); |
6149aea9 PA |
6735 | } |
6736 | ||
a96d9b2e SDJ |
6737 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6738 | ||
2060206e | 6739 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
6740 | |
6741 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6742 | ||
6743 | static int | |
6744 | syscall_catchpoint_p (struct breakpoint *b) | |
6745 | { | |
6746 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6747 | } | |
6748 | ||
346774a9 PA |
6749 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
6750 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
6751 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
6752 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 6753 | |
346774a9 PA |
6754 | static void |
6755 | init_catchpoint (struct breakpoint *b, | |
6756 | struct gdbarch *gdbarch, int tempflag, | |
6757 | char *cond_string, | |
c0a91b2b | 6758 | const struct breakpoint_ops *ops) |
c906108c | 6759 | { |
c5aa993b | 6760 | struct symtab_and_line sal; |
346774a9 | 6761 | |
fe39c653 | 6762 | init_sal (&sal); |
6c95b8df | 6763 | sal.pspace = current_program_space; |
c5aa993b | 6764 | |
28010a5d | 6765 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 6766 | |
1b36a34b | 6767 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 6768 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
6769 | } |
6770 | ||
28010a5d | 6771 | void |
3ea46bff | 6772 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
6773 | { |
6774 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
6775 | set_breakpoint_number (internal, b); |
6776 | if (!internal) | |
6777 | mention (b); | |
c56053d2 | 6778 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
6779 | |
6780 | if (update_gll) | |
6781 | update_global_location_list (1); | |
c56053d2 PA |
6782 | } |
6783 | ||
9b70b993 | 6784 | static void |
a6d9a66e UW |
6785 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6786 | int tempflag, char *cond_string, | |
c0a91b2b | 6787 | const struct breakpoint_ops *ops) |
c906108c | 6788 | { |
e29a4733 | 6789 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 6790 | |
e29a4733 PA |
6791 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
6792 | ||
6793 | c->forked_inferior_pid = null_ptid; | |
6794 | ||
3ea46bff | 6795 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
6796 | } |
6797 | ||
fe798b75 JB |
6798 | /* Exec catchpoints. */ |
6799 | ||
b4d90040 PA |
6800 | /* An instance of this type is used to represent an exec catchpoint. |
6801 | It includes a "struct breakpoint" as a kind of base class; users | |
6802 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6803 | really of this type iff its ops pointer points to | |
6804 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
6805 | ||
6806 | struct exec_catchpoint | |
6807 | { | |
6808 | /* The base class. */ | |
6809 | struct breakpoint base; | |
6810 | ||
6811 | /* Filename of a program whose exec triggered this catchpoint. | |
6812 | This field is only valid immediately after this catchpoint has | |
6813 | triggered. */ | |
6814 | char *exec_pathname; | |
6815 | }; | |
6816 | ||
6817 | /* Implement the "dtor" breakpoint_ops method for exec | |
6818 | catchpoints. */ | |
6819 | ||
6820 | static void | |
6821 | dtor_catch_exec (struct breakpoint *b) | |
6822 | { | |
6823 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
6824 | ||
6825 | xfree (c->exec_pathname); | |
348d480f | 6826 | |
2060206e | 6827 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
6828 | } |
6829 | ||
77b06cd7 TJB |
6830 | static int |
6831 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6832 | { |
77b06cd7 | 6833 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6834 | } |
c906108c | 6835 | |
fe798b75 | 6836 | static int |
77b06cd7 | 6837 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6838 | { |
6839 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6840 | } | |
c906108c | 6841 | |
fe798b75 | 6842 | static int |
f1310107 TJB |
6843 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6844 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6845 | { |
b4d90040 PA |
6846 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
6847 | ||
6848 | return inferior_has_execd (inferior_ptid, &c->exec_pathname); | |
fe798b75 | 6849 | } |
c906108c | 6850 | |
fe798b75 | 6851 | static enum print_stop_action |
348d480f | 6852 | print_it_catch_exec (bpstat bs) |
fe798b75 | 6853 | { |
36dfb11c | 6854 | struct ui_out *uiout = current_uiout; |
348d480f | 6855 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
6856 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
6857 | ||
fe798b75 | 6858 | annotate_catchpoint (b->number); |
36dfb11c TT |
6859 | if (b->disposition == disp_del) |
6860 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6861 | else | |
6862 | ui_out_text (uiout, "\nCatchpoint "); | |
6863 | if (ui_out_is_mi_like_p (uiout)) | |
6864 | { | |
6865 | ui_out_field_string (uiout, "reason", | |
6866 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
6867 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6868 | } | |
6869 | ui_out_field_int (uiout, "bkptno", b->number); | |
6870 | ui_out_text (uiout, " (exec'd "); | |
6871 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
6872 | ui_out_text (uiout, "), "); | |
6873 | ||
fe798b75 | 6874 | return PRINT_SRC_AND_LOC; |
c906108c SS |
6875 | } |
6876 | ||
fe798b75 | 6877 | static void |
a6d9a66e | 6878 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 6879 | { |
b4d90040 | 6880 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 6881 | struct value_print_options opts; |
79a45e25 | 6882 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
6883 | |
6884 | get_user_print_options (&opts); | |
6885 | ||
6886 | /* Field 4, the address, is omitted (which makes the columns | |
6887 | not line up too nicely with the headers, but the effect | |
6888 | is relatively readable). */ | |
6889 | if (opts.addressprint) | |
6890 | ui_out_field_skip (uiout, "addr"); | |
6891 | annotate_field (5); | |
6892 | ui_out_text (uiout, "exec"); | |
b4d90040 | 6893 | if (c->exec_pathname != NULL) |
fe798b75 JB |
6894 | { |
6895 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 6896 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
6897 | ui_out_text (uiout, "\" "); |
6898 | } | |
6899 | } | |
6900 | ||
6901 | static void | |
6902 | print_mention_catch_exec (struct breakpoint *b) | |
6903 | { | |
6904 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6905 | } | |
6906 | ||
6149aea9 PA |
6907 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6908 | catchpoints. */ | |
6909 | ||
6910 | static void | |
6911 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6912 | { | |
6913 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 6914 | print_recreate_thread (b, fp); |
6149aea9 PA |
6915 | } |
6916 | ||
2060206e | 6917 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 6918 | |
a96d9b2e SDJ |
6919 | static void |
6920 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 6921 | const struct breakpoint_ops *ops) |
a96d9b2e | 6922 | { |
be5c67c1 | 6923 | struct syscall_catchpoint *c; |
a96d9b2e | 6924 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 6925 | |
be5c67c1 PA |
6926 | c = XNEW (struct syscall_catchpoint); |
6927 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
6928 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 6929 | |
3ea46bff | 6930 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
6931 | } |
6932 | ||
c906108c | 6933 | static int |
fba45db2 | 6934 | hw_breakpoint_used_count (void) |
c906108c | 6935 | { |
c906108c | 6936 | int i = 0; |
f1310107 TJB |
6937 | struct breakpoint *b; |
6938 | struct bp_location *bl; | |
c906108c SS |
6939 | |
6940 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6941 | { |
d6b74ac4 | 6942 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6943 | for (bl = b->loc; bl; bl = bl->next) |
6944 | { | |
6945 | /* Special types of hardware breakpoints may use more than | |
6946 | one register. */ | |
348d480f | 6947 | i += b->ops->resources_needed (bl); |
f1310107 | 6948 | } |
c5aa993b | 6949 | } |
c906108c SS |
6950 | |
6951 | return i; | |
6952 | } | |
6953 | ||
a1398e0c PA |
6954 | /* Returns the resources B would use if it were a hardware |
6955 | watchpoint. */ | |
6956 | ||
c906108c | 6957 | static int |
a1398e0c | 6958 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 6959 | { |
c906108c | 6960 | int i = 0; |
e09342b5 | 6961 | struct bp_location *bl; |
c906108c | 6962 | |
a1398e0c PA |
6963 | if (!breakpoint_enabled (b)) |
6964 | return 0; | |
6965 | ||
6966 | for (bl = b->loc; bl; bl = bl->next) | |
6967 | { | |
6968 | /* Special types of hardware watchpoints may use more than | |
6969 | one register. */ | |
6970 | i += b->ops->resources_needed (bl); | |
6971 | } | |
6972 | ||
6973 | return i; | |
6974 | } | |
6975 | ||
6976 | /* Returns the sum the used resources of all hardware watchpoints of | |
6977 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
6978 | the sum of the used resources of all hardware watchpoints of other | |
6979 | types _not_ TYPE. */ | |
6980 | ||
6981 | static int | |
6982 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
6983 | enum bptype type, int *other_type_used) | |
6984 | { | |
6985 | int i = 0; | |
6986 | struct breakpoint *b; | |
6987 | ||
c906108c SS |
6988 | *other_type_used = 0; |
6989 | ALL_BREAKPOINTS (b) | |
e09342b5 | 6990 | { |
a1398e0c PA |
6991 | if (b == except) |
6992 | continue; | |
e09342b5 TJB |
6993 | if (!breakpoint_enabled (b)) |
6994 | continue; | |
6995 | ||
a1398e0c PA |
6996 | if (b->type == type) |
6997 | i += hw_watchpoint_use_count (b); | |
6998 | else if (is_hardware_watchpoint (b)) | |
6999 | *other_type_used = 1; | |
e09342b5 TJB |
7000 | } |
7001 | ||
c906108c SS |
7002 | return i; |
7003 | } | |
7004 | ||
c906108c | 7005 | void |
fba45db2 | 7006 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7007 | { |
c5aa993b | 7008 | struct breakpoint *b; |
c906108c SS |
7009 | |
7010 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7011 | { |
cc60f2e3 | 7012 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7013 | { |
b5de0fa7 | 7014 | b->enable_state = bp_call_disabled; |
b60e7edf | 7015 | update_global_location_list (0); |
c5aa993b JM |
7016 | } |
7017 | } | |
c906108c SS |
7018 | } |
7019 | ||
7020 | void | |
fba45db2 | 7021 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7022 | { |
c5aa993b | 7023 | struct breakpoint *b; |
c906108c SS |
7024 | |
7025 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7026 | { |
cc60f2e3 | 7027 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7028 | { |
b5de0fa7 | 7029 | b->enable_state = bp_enabled; |
b60e7edf | 7030 | update_global_location_list (1); |
c5aa993b JM |
7031 | } |
7032 | } | |
c906108c SS |
7033 | } |
7034 | ||
8bea4e01 UW |
7035 | void |
7036 | disable_breakpoints_before_startup (void) | |
7037 | { | |
6c95b8df | 7038 | current_program_space->executing_startup = 1; |
f8eba3c6 | 7039 | update_global_location_list (0); |
8bea4e01 UW |
7040 | } |
7041 | ||
7042 | void | |
7043 | enable_breakpoints_after_startup (void) | |
7044 | { | |
6c95b8df | 7045 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7046 | breakpoint_re_set (); |
8bea4e01 UW |
7047 | } |
7048 | ||
c906108c SS |
7049 | |
7050 | /* Set a breakpoint that will evaporate an end of command | |
7051 | at address specified by SAL. | |
7052 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
7053 | ||
7054 | struct breakpoint * | |
a6d9a66e UW |
7055 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7056 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7057 | { |
52f0bd74 | 7058 | struct breakpoint *b; |
edb3359d DJ |
7059 | |
7060 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
7061 | one. */ | |
7062 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
7063 | ||
06edf0c0 | 7064 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
7065 | b->enable_state = bp_enabled; |
7066 | b->disposition = disp_donttouch; | |
818dd999 | 7067 | b->frame_id = frame_id; |
c906108c | 7068 | |
4a64f543 MS |
7069 | /* If we're debugging a multi-threaded program, then we want |
7070 | momentary breakpoints to be active in only a single thread of | |
7071 | control. */ | |
39f77062 KB |
7072 | if (in_thread_list (inferior_ptid)) |
7073 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 7074 | |
b60e7edf | 7075 | update_global_location_list_nothrow (1); |
74960c60 | 7076 | |
c906108c SS |
7077 | return b; |
7078 | } | |
611c83ae | 7079 | |
06edf0c0 PA |
7080 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
7081 | The new breakpoint will have type TYPE, and use OPS as it | |
7082 | breakpoint_ops. */ | |
e58b0e63 | 7083 | |
06edf0c0 PA |
7084 | static struct breakpoint * |
7085 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7086 | enum bptype type, | |
c0a91b2b | 7087 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
7088 | { |
7089 | struct breakpoint *copy; | |
7090 | ||
06edf0c0 | 7091 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 7092 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7093 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7094 | |
a6d9a66e | 7095 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7096 | copy->loc->requested_address = orig->loc->requested_address; |
7097 | copy->loc->address = orig->loc->address; | |
7098 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7099 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 | 7100 | |
f8eba3c6 TT |
7101 | if (orig->loc->source_file != NULL) |
7102 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 7103 | |
f8eba3c6 | 7104 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
7105 | copy->frame_id = orig->frame_id; |
7106 | copy->thread = orig->thread; | |
6c95b8df | 7107 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7108 | |
7109 | copy->enable_state = bp_enabled; | |
7110 | copy->disposition = disp_donttouch; | |
7111 | copy->number = internal_breakpoint_number--; | |
7112 | ||
7113 | update_global_location_list_nothrow (0); | |
7114 | return copy; | |
7115 | } | |
7116 | ||
06edf0c0 PA |
7117 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7118 | ORIG is NULL. */ | |
7119 | ||
7120 | struct breakpoint * | |
7121 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7122 | { | |
7123 | /* If there's nothing to clone, then return nothing. */ | |
7124 | if (orig == NULL) | |
7125 | return NULL; | |
7126 | ||
7127 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
7128 | } | |
7129 | ||
611c83ae | 7130 | struct breakpoint * |
a6d9a66e UW |
7131 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7132 | enum bptype type) | |
611c83ae PA |
7133 | { |
7134 | struct symtab_and_line sal; | |
7135 | ||
7136 | sal = find_pc_line (pc, 0); | |
7137 | sal.pc = pc; | |
7138 | sal.section = find_pc_overlay (pc); | |
7139 | sal.explicit_pc = 1; | |
7140 | ||
a6d9a66e | 7141 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7142 | } |
c906108c | 7143 | \f |
c5aa993b | 7144 | |
c906108c SS |
7145 | /* Tell the user we have just set a breakpoint B. */ |
7146 | ||
7147 | static void | |
fba45db2 | 7148 | mention (struct breakpoint *b) |
c906108c | 7149 | { |
348d480f | 7150 | b->ops->print_mention (b); |
79a45e25 | 7151 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 7152 | return; |
c906108c SS |
7153 | printf_filtered ("\n"); |
7154 | } | |
c906108c | 7155 | \f |
c5aa993b | 7156 | |
0d381245 | 7157 | static struct bp_location * |
39d61571 | 7158 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7159 | const struct symtab_and_line *sal) |
7160 | { | |
7161 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
7162 | CORE_ADDR adjusted_address; |
7163 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
7164 | ||
7165 | if (loc_gdbarch == NULL) | |
7166 | loc_gdbarch = b->gdbarch; | |
7167 | ||
7168 | /* Adjust the breakpoint's address prior to allocating a location. | |
7169 | Once we call allocate_bp_location(), that mostly uninitialized | |
7170 | location will be placed on the location chain. Adjustment of the | |
7171 | breakpoint may cause target_read_memory() to be called and we do | |
7172 | not want its scan of the location chain to find a breakpoint and | |
7173 | location that's only been partially initialized. */ | |
7174 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
7175 | sal->pc, b->type); | |
0d381245 | 7176 | |
39d61571 | 7177 | loc = allocate_bp_location (b); |
0d381245 VP |
7178 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7179 | ; | |
7180 | *tmp = loc; | |
3742cc8b | 7181 | |
0d381245 | 7182 | loc->requested_address = sal->pc; |
3742cc8b | 7183 | loc->address = adjusted_address; |
6c95b8df PA |
7184 | loc->pspace = sal->pspace; |
7185 | gdb_assert (loc->pspace != NULL); | |
0d381245 | 7186 | loc->section = sal->section; |
3742cc8b | 7187 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
7188 | |
7189 | if (sal->symtab != NULL) | |
7190 | loc->source_file = xstrdup (sal->symtab->filename); | |
7191 | loc->line_number = sal->line; | |
7192 | ||
0e30163f JK |
7193 | set_breakpoint_location_function (loc, |
7194 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7195 | return loc; |
7196 | } | |
514f746b AR |
7197 | \f |
7198 | ||
7199 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7200 | return 0 otherwise. */ | |
7201 | ||
7202 | static int | |
7203 | bp_loc_is_permanent (struct bp_location *loc) | |
7204 | { | |
7205 | int len; | |
7206 | CORE_ADDR addr; | |
1afeeb75 | 7207 | const gdb_byte *bpoint; |
514f746b | 7208 | gdb_byte *target_mem; |
939c61fa JK |
7209 | struct cleanup *cleanup; |
7210 | int retval = 0; | |
514f746b AR |
7211 | |
7212 | gdb_assert (loc != NULL); | |
7213 | ||
7214 | addr = loc->address; | |
1afeeb75 | 7215 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7216 | |
939c61fa | 7217 | /* Software breakpoints unsupported? */ |
1afeeb75 | 7218 | if (bpoint == NULL) |
939c61fa JK |
7219 | return 0; |
7220 | ||
514f746b AR |
7221 | target_mem = alloca (len); |
7222 | ||
939c61fa JK |
7223 | /* Enable the automatic memory restoration from breakpoints while |
7224 | we read the memory. Otherwise we could say about our temporary | |
7225 | breakpoints they are permanent. */ | |
6c95b8df PA |
7226 | cleanup = save_current_space_and_thread (); |
7227 | ||
7228 | switch_to_program_space_and_thread (loc->pspace); | |
7229 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7230 | |
514f746b | 7231 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 7232 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 7233 | retval = 1; |
514f746b | 7234 | |
939c61fa JK |
7235 | do_cleanups (cleanup); |
7236 | ||
7237 | return retval; | |
514f746b AR |
7238 | } |
7239 | ||
7240 | ||
c3f6f71d | 7241 | |
018d34a4 VP |
7242 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7243 | as textual description of the location, and COND_STRING | |
db107f19 | 7244 | as condition expression. */ |
018d34a4 VP |
7245 | |
7246 | static void | |
d9b3f62e PA |
7247 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
7248 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 7249 | char *filter, char *cond_string, |
d9b3f62e PA |
7250 | enum bptype type, enum bpdisp disposition, |
7251 | int thread, int task, int ignore_count, | |
c0a91b2b | 7252 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e | 7253 | int enabled, int internal, int display_canonical) |
018d34a4 | 7254 | { |
0d381245 | 7255 | int i; |
018d34a4 VP |
7256 | |
7257 | if (type == bp_hardware_breakpoint) | |
7258 | { | |
fbbd034e AS |
7259 | int target_resources_ok; |
7260 | ||
7261 | i = hw_breakpoint_used_count (); | |
7262 | target_resources_ok = | |
7263 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
7264 | i + 1, 0); |
7265 | if (target_resources_ok == 0) | |
7266 | error (_("No hardware breakpoint support in the target.")); | |
7267 | else if (target_resources_ok < 0) | |
7268 | error (_("Hardware breakpoints used exceeds limit.")); | |
7269 | } | |
7270 | ||
6c95b8df PA |
7271 | gdb_assert (sals.nelts > 0); |
7272 | ||
0d381245 VP |
7273 | for (i = 0; i < sals.nelts; ++i) |
7274 | { | |
7275 | struct symtab_and_line sal = sals.sals[i]; | |
7276 | struct bp_location *loc; | |
7277 | ||
7278 | if (from_tty) | |
5af949e3 UW |
7279 | { |
7280 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7281 | if (!loc_gdbarch) | |
7282 | loc_gdbarch = gdbarch; | |
7283 | ||
7284 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7285 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7286 | } |
0d381245 VP |
7287 | |
7288 | if (i == 0) | |
7289 | { | |
d9b3f62e | 7290 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 7291 | b->thread = thread; |
4a306c9a | 7292 | b->task = task; |
018d34a4 | 7293 | |
0d381245 VP |
7294 | b->cond_string = cond_string; |
7295 | b->ignore_count = ignore_count; | |
41447f92 | 7296 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7297 | b->disposition = disposition; |
6c95b8df | 7298 | |
0fb4aa4b PA |
7299 | if (type == bp_static_tracepoint) |
7300 | { | |
d9b3f62e | 7301 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
7302 | struct static_tracepoint_marker marker; |
7303 | ||
7304 | if (is_marker_spec (addr_string)) | |
7305 | { | |
7306 | /* We already know the marker exists, otherwise, we | |
7307 | wouldn't see a sal for it. */ | |
7308 | char *p = &addr_string[3]; | |
7309 | char *endp; | |
7310 | char *marker_str; | |
0fb4aa4b | 7311 | |
e9cafbcc | 7312 | p = skip_spaces (p); |
0fb4aa4b | 7313 | |
e9cafbcc | 7314 | endp = skip_to_space (p); |
0fb4aa4b PA |
7315 | |
7316 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 7317 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 7318 | |
3e43a32a MS |
7319 | printf_filtered (_("Probed static tracepoint " |
7320 | "marker \"%s\"\n"), | |
d9b3f62e | 7321 | t->static_trace_marker_id); |
0fb4aa4b PA |
7322 | } |
7323 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7324 | { | |
d9b3f62e | 7325 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
7326 | release_static_tracepoint_marker (&marker); |
7327 | ||
3e43a32a MS |
7328 | printf_filtered (_("Probed static tracepoint " |
7329 | "marker \"%s\"\n"), | |
d9b3f62e | 7330 | t->static_trace_marker_id); |
0fb4aa4b PA |
7331 | } |
7332 | else | |
3e43a32a MS |
7333 | warning (_("Couldn't determine the static " |
7334 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7335 | } |
7336 | ||
0d381245 VP |
7337 | loc = b->loc; |
7338 | } | |
7339 | else | |
018d34a4 | 7340 | { |
39d61571 | 7341 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7342 | } |
7343 | ||
514f746b AR |
7344 | if (bp_loc_is_permanent (loc)) |
7345 | make_breakpoint_permanent (b); | |
7346 | ||
0d381245 VP |
7347 | if (b->cond_string) |
7348 | { | |
7349 | char *arg = b->cond_string; | |
d32a6982 | 7350 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7351 | if (*arg) |
db107f19 | 7352 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7353 | } |
0d381245 | 7354 | } |
018d34a4 | 7355 | |
56435ebe | 7356 | b->display_canonical = display_canonical; |
018d34a4 VP |
7357 | if (addr_string) |
7358 | b->addr_string = addr_string; | |
7359 | else | |
7360 | /* addr_string has to be used or breakpoint_re_set will delete | |
7361 | me. */ | |
5af949e3 UW |
7362 | b->addr_string |
7363 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 7364 | b->filter = filter; |
d9b3f62e | 7365 | } |
018d34a4 | 7366 | |
d9b3f62e PA |
7367 | static void |
7368 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
7369 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 7370 | char *filter, char *cond_string, |
d9b3f62e PA |
7371 | enum bptype type, enum bpdisp disposition, |
7372 | int thread, int task, int ignore_count, | |
c0a91b2b | 7373 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e PA |
7374 | int enabled, int internal, int display_canonical) |
7375 | { | |
7376 | struct breakpoint *b; | |
7377 | struct cleanup *old_chain; | |
7378 | ||
7379 | if (is_tracepoint_type (type)) | |
7380 | { | |
7381 | struct tracepoint *t; | |
7382 | ||
7383 | t = XCNEW (struct tracepoint); | |
7384 | b = &t->base; | |
7385 | } | |
7386 | else | |
7387 | b = XNEW (struct breakpoint); | |
7388 | ||
7389 | old_chain = make_cleanup (xfree, b); | |
7390 | ||
7391 | init_breakpoint_sal (b, gdbarch, | |
7392 | sals, addr_string, | |
f8eba3c6 | 7393 | filter, cond_string, |
d9b3f62e PA |
7394 | type, disposition, |
7395 | thread, task, ignore_count, | |
7396 | ops, from_tty, | |
7397 | enabled, internal, display_canonical); | |
7398 | discard_cleanups (old_chain); | |
7399 | ||
3ea46bff | 7400 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
7401 | } |
7402 | ||
7403 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
7404 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7405 | value. COND_STRING, if not NULL, specified the condition to be | |
7406 | used for all breakpoints. Essentially the only case where | |
7407 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7408 | function. In that case, it's still not possible to specify | |
7409 | separate conditions for different overloaded functions, so | |
7410 | we take just a single condition string. | |
7411 | ||
c3f6f71d | 7412 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7413 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7414 | array contents). If the function fails (error() is called), the |
7415 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7416 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7417 | |
7418 | static void | |
8cdf0e15 | 7419 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 7420 | struct linespec_result *canonical, |
8cdf0e15 VP |
7421 | char *cond_string, |
7422 | enum bptype type, enum bpdisp disposition, | |
7423 | int thread, int task, int ignore_count, | |
c0a91b2b | 7424 | const struct breakpoint_ops *ops, int from_tty, |
84f4c1fe | 7425 | int enabled, int internal) |
c906108c | 7426 | { |
018d34a4 | 7427 | int i; |
f8eba3c6 | 7428 | struct linespec_sals *lsal; |
cc59ec59 | 7429 | |
f8eba3c6 TT |
7430 | if (canonical->pre_expanded) |
7431 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
7432 | ||
7433 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 7434 | { |
f8eba3c6 TT |
7435 | /* Note that 'addr_string' can be NULL in the case of a plain |
7436 | 'break', without arguments. */ | |
7437 | char *addr_string = (canonical->addr_string | |
7438 | ? xstrdup (canonical->addr_string) | |
7439 | : NULL); | |
7440 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
7441 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 7442 | |
f8eba3c6 TT |
7443 | make_cleanup (xfree, filter_string); |
7444 | create_breakpoint_sal (gdbarch, lsal->sals, | |
7445 | addr_string, | |
7446 | filter_string, | |
8cdf0e15 | 7447 | cond_string, type, disposition, |
84f4c1fe | 7448 | thread, task, ignore_count, ops, |
56435ebe TT |
7449 | from_tty, enabled, internal, |
7450 | canonical->special_display); | |
f8eba3c6 | 7451 | discard_cleanups (inner); |
c3f6f71d | 7452 | } |
c3f6f71d | 7453 | } |
c906108c | 7454 | |
9998af43 | 7455 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7456 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7457 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7458 | address strings. ADDRESS points to the end of the SAL. |
7459 | ||
7460 | The array and the line spec strings are allocated on the heap, it is | |
7461 | the caller's responsibility to free them. */ | |
c906108c | 7462 | |
b9362cc7 | 7463 | static void |
c3f6f71d | 7464 | parse_breakpoint_sals (char **address, |
58438ac1 | 7465 | struct linespec_result *canonical) |
c3f6f71d JM |
7466 | { |
7467 | char *addr_start = *address; | |
cc59ec59 | 7468 | |
c3f6f71d | 7469 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7470 | breakpoint. */ |
c3f6f71d JM |
7471 | if ((*address) == NULL |
7472 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 7473 | { |
1bfeeb0f JL |
7474 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
7475 | address. */ | |
7476 | if (last_displayed_sal_is_valid ()) | |
c906108c | 7477 | { |
f8eba3c6 | 7478 | struct linespec_sals lsal; |
c3f6f71d | 7479 | struct symtab_and_line sal; |
cc59ec59 | 7480 | |
4a64f543 | 7481 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 7482 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 7483 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
7484 | |
7485 | /* Set sal's pspace, pc, symtab, and line to the values | |
7486 | corresponding to the last call to print_frame_info. */ | |
7487 | get_last_displayed_sal (&sal); | |
7488 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 7489 | |
4a64f543 | 7490 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
7491 | where PC is the last displayed codepoint's address. So |
7492 | make sure to set sal.explicit_pc to prevent GDB from | |
7493 | trying to expand the list of sals to include all other | |
7494 | instances with the same symtab and line. */ | |
00903456 JK |
7495 | sal.explicit_pc = 1; |
7496 | ||
f8eba3c6 TT |
7497 | lsal.sals.sals[0] = sal; |
7498 | lsal.sals.nelts = 1; | |
7499 | lsal.canonical = NULL; | |
7500 | ||
7501 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
7502 | } |
7503 | else | |
8a3fe4f8 | 7504 | error (_("No default breakpoint address now.")); |
c906108c SS |
7505 | } |
7506 | else | |
7507 | { | |
c906108c | 7508 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7509 | current_source_symtab (which is decode_line_1's default). |
7510 | This should produce the results we want almost all of the | |
f8eba3c6 TT |
7511 | time while leaving default_breakpoint_* alone. */ |
7512 | if (last_displayed_sal_is_valid ()) | |
7513 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, | |
7514 | get_last_displayed_symtab (), | |
7515 | get_last_displayed_line (), | |
7516 | canonical, NULL, NULL); | |
c906108c | 7517 | else |
f8eba3c6 TT |
7518 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
7519 | (struct symtab *) NULL, 0, | |
7520 | canonical, NULL, NULL); | |
c906108c | 7521 | } |
c3f6f71d | 7522 | } |
c906108c | 7523 | |
c906108c | 7524 | |
c3f6f71d | 7525 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7526 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7527 | |
b9362cc7 | 7528 | static void |
23e7acfb | 7529 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7530 | { |
7531 | int i; | |
cc59ec59 | 7532 | |
c3f6f71d | 7533 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7534 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7535 | } |
7536 | ||
7a697b8d SS |
7537 | /* Fast tracepoints may have restrictions on valid locations. For |
7538 | instance, a fast tracepoint using a jump instead of a trap will | |
7539 | likely have to overwrite more bytes than a trap would, and so can | |
7540 | only be placed where the instruction is longer than the jump, or a | |
7541 | multi-instruction sequence does not have a jump into the middle of | |
7542 | it, etc. */ | |
7543 | ||
7544 | static void | |
7545 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7546 | struct symtabs_and_lines *sals) | |
7547 | { | |
7548 | int i, rslt; | |
7549 | struct symtab_and_line *sal; | |
7550 | char *msg; | |
7551 | struct cleanup *old_chain; | |
7552 | ||
7553 | for (i = 0; i < sals->nelts; i++) | |
7554 | { | |
f8eba3c6 TT |
7555 | struct gdbarch *sarch; |
7556 | ||
7a697b8d SS |
7557 | sal = &sals->sals[i]; |
7558 | ||
f8eba3c6 TT |
7559 | sarch = get_sal_arch (*sal); |
7560 | /* We fall back to GDBARCH if there is no architecture | |
7561 | associated with SAL. */ | |
7562 | if (sarch == NULL) | |
7563 | sarch = gdbarch; | |
7564 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
7565 | NULL, &msg); |
7566 | old_chain = make_cleanup (xfree, msg); | |
7567 | ||
7568 | if (!rslt) | |
7569 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 7570 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
7571 | |
7572 | do_cleanups (old_chain); | |
7573 | } | |
7574 | } | |
7575 | ||
018d34a4 VP |
7576 | /* Given TOK, a string specification of condition and thread, as |
7577 | accepted by the 'break' command, extract the condition | |
7578 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7579 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7580 | If no condition is found, *COND_STRING is set to NULL. |
7581 | If no thread is found, *THREAD is set to -1. */ | |
7582 | static void | |
7583 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7584 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7585 | { |
7586 | *cond_string = NULL; | |
7587 | *thread = -1; | |
7588 | while (tok && *tok) | |
7589 | { | |
7590 | char *end_tok; | |
7591 | int toklen; | |
7592 | char *cond_start = NULL; | |
7593 | char *cond_end = NULL; | |
cc59ec59 | 7594 | |
e9cafbcc | 7595 | tok = skip_spaces (tok); |
018d34a4 | 7596 | |
e9cafbcc | 7597 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7598 | |
7599 | toklen = end_tok - tok; | |
7600 | ||
7601 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7602 | { | |
f7545552 TT |
7603 | struct expression *expr; |
7604 | ||
018d34a4 | 7605 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7606 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7607 | xfree (expr); | |
018d34a4 VP |
7608 | cond_end = tok; |
7609 | *cond_string = savestring (cond_start, | |
7610 | cond_end - cond_start); | |
7611 | } | |
7612 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7613 | { | |
7614 | char *tmptok; | |
7615 | ||
7616 | tok = end_tok + 1; | |
7617 | tmptok = tok; | |
7618 | *thread = strtol (tok, &tok, 0); | |
7619 | if (tok == tmptok) | |
7620 | error (_("Junk after thread keyword.")); | |
7621 | if (!valid_thread_id (*thread)) | |
7622 | error (_("Unknown thread %d."), *thread); | |
7623 | } | |
4a306c9a JB |
7624 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7625 | { | |
7626 | char *tmptok; | |
7627 | ||
7628 | tok = end_tok + 1; | |
7629 | tmptok = tok; | |
7630 | *task = strtol (tok, &tok, 0); | |
7631 | if (tok == tmptok) | |
7632 | error (_("Junk after task keyword.")); | |
7633 | if (!valid_task_id (*task)) | |
b6199126 | 7634 | error (_("Unknown task %d."), *task); |
4a306c9a | 7635 | } |
018d34a4 VP |
7636 | else |
7637 | error (_("Junk at end of arguments.")); | |
7638 | } | |
7639 | } | |
7640 | ||
0fb4aa4b PA |
7641 | /* Decode a static tracepoint marker spec. */ |
7642 | ||
7643 | static struct symtabs_and_lines | |
7644 | decode_static_tracepoint_spec (char **arg_p) | |
7645 | { | |
7646 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7647 | struct symtabs_and_lines sals; | |
7648 | struct symtab_and_line sal; | |
7649 | struct symbol *sym; | |
7650 | struct cleanup *old_chain; | |
7651 | char *p = &(*arg_p)[3]; | |
7652 | char *endp; | |
7653 | char *marker_str; | |
7654 | int i; | |
7655 | ||
e9cafbcc | 7656 | p = skip_spaces (p); |
0fb4aa4b | 7657 | |
e9cafbcc | 7658 | endp = skip_to_space (p); |
0fb4aa4b PA |
7659 | |
7660 | marker_str = savestring (p, endp - p); | |
7661 | old_chain = make_cleanup (xfree, marker_str); | |
7662 | ||
7663 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7664 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7665 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7666 | ||
7667 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7668 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7669 | ||
7670 | for (i = 0; i < sals.nelts; i++) | |
7671 | { | |
7672 | struct static_tracepoint_marker *marker; | |
7673 | ||
7674 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7675 | ||
7676 | init_sal (&sals.sals[i]); | |
7677 | ||
7678 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7679 | sals.sals[i].pc = marker->address; | |
7680 | ||
7681 | release_static_tracepoint_marker (marker); | |
7682 | } | |
7683 | ||
7684 | do_cleanups (old_chain); | |
7685 | ||
7686 | *arg_p = endp; | |
7687 | return sals; | |
7688 | } | |
7689 | ||
fd9b8c24 PA |
7690 | /* Set a breakpoint. This function is shared between CLI and MI |
7691 | functions for setting a breakpoint. This function has two major | |
7692 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7693 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7694 | breakpoint location, address and thread. Otherwise, ARG is just |
7695 | the location of breakpoint, with condition and thread specified by | |
7696 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7697 | the breakpoint number will be allocated from the internal | |
7698 | breakpoint count. Returns true if any breakpoint was created; | |
7699 | false otherwise. */ | |
0101ce28 | 7700 | |
8cdf0e15 VP |
7701 | int |
7702 | create_breakpoint (struct gdbarch *gdbarch, | |
7703 | char *arg, char *cond_string, int thread, | |
7704 | int parse_condition_and_thread, | |
0fb4aa4b | 7705 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7706 | int ignore_count, |
7707 | enum auto_boolean pending_break_support, | |
c0a91b2b | 7708 | const struct breakpoint_ops *ops, |
84f4c1fe | 7709 | int from_tty, int enabled, int internal) |
c3f6f71d | 7710 | { |
b78a6381 | 7711 | volatile struct gdb_exception e; |
f8eba3c6 | 7712 | char *copy_arg = NULL; |
c3f6f71d | 7713 | char *addr_start = arg; |
7efd8fc2 | 7714 | struct linespec_result canonical; |
c3f6f71d | 7715 | struct cleanup *old_chain; |
80c99de1 | 7716 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7717 | int i; |
0101ce28 | 7718 | int pending = 0; |
4a306c9a | 7719 | int task = 0; |
86b17b60 | 7720 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7721 | |
348d480f PA |
7722 | gdb_assert (ops != NULL); |
7723 | ||
7efd8fc2 | 7724 | init_linespec_result (&canonical); |
c3f6f71d | 7725 | |
0fb4aa4b PA |
7726 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7727 | { | |
7728 | int i; | |
f8eba3c6 | 7729 | struct linespec_sals lsal; |
0fb4aa4b | 7730 | |
f8eba3c6 | 7731 | lsal.sals = decode_static_tracepoint_spec (&arg); |
0fb4aa4b PA |
7732 | |
7733 | copy_arg = savestring (addr_start, arg - addr_start); | |
f8eba3c6 | 7734 | |
d14c4eb7 | 7735 | canonical.addr_string = xstrdup (copy_arg); |
f8eba3c6 TT |
7736 | lsal.canonical = xstrdup (copy_arg); |
7737 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
7738 | ||
0fb4aa4b PA |
7739 | goto done; |
7740 | } | |
7741 | ||
b78a6381 TT |
7742 | TRY_CATCH (e, RETURN_MASK_ALL) |
7743 | { | |
f8eba3c6 | 7744 | parse_breakpoint_sals (&arg, &canonical); |
b78a6381 | 7745 | } |
0101ce28 JJ |
7746 | |
7747 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7748 | switch (e.reason) |
0101ce28 | 7749 | { |
05ff989b | 7750 | case RETURN_QUIT: |
98deb0da | 7751 | throw_exception (e); |
05ff989b AC |
7752 | case RETURN_ERROR: |
7753 | switch (e.error) | |
0101ce28 | 7754 | { |
05ff989b | 7755 | case NOT_FOUND_ERROR: |
0101ce28 | 7756 | |
05ff989b AC |
7757 | /* If pending breakpoint support is turned off, throw |
7758 | error. */ | |
fa8d40ab JJ |
7759 | |
7760 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7761 | throw_exception (e); |
7762 | ||
7763 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7764 | |
05ff989b AC |
7765 | /* If pending breakpoint support is auto query and the user |
7766 | selects no, then simply return the error code. */ | |
059fb39f | 7767 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
7768 | && !nquery (_("Make %s pending on future shared library load? "), |
7769 | bptype_string (type_wanted))) | |
fd9b8c24 | 7770 | return 0; |
fa8d40ab | 7771 | |
05ff989b AC |
7772 | /* At this point, either the user was queried about setting |
7773 | a pending breakpoint and selected yes, or pending | |
7774 | breakpoint behavior is on and thus a pending breakpoint | |
7775 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
7776 | { |
7777 | struct linespec_sals lsal; | |
7778 | ||
7779 | copy_arg = xstrdup (addr_start); | |
7780 | lsal.canonical = xstrdup (copy_arg); | |
7781 | lsal.sals.nelts = 1; | |
7782 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
7783 | init_sal (&lsal.sals.sals[0]); | |
7784 | pending = 1; | |
7785 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
7786 | } | |
05ff989b AC |
7787 | break; |
7788 | default: | |
98deb0da | 7789 | throw_exception (e); |
0101ce28 | 7790 | } |
2abae994 | 7791 | break; |
05ff989b | 7792 | default: |
f8eba3c6 | 7793 | if (VEC_empty (linespec_sals, canonical.sals)) |
fd9b8c24 | 7794 | return 0; |
0101ce28 | 7795 | } |
c3f6f71d | 7796 | |
0fb4aa4b PA |
7797 | done: |
7798 | ||
4a64f543 | 7799 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 7800 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 7801 | |
c3f6f71d JM |
7802 | /* ----------------------------- SNIP ----------------------------- |
7803 | Anything added to the cleanup chain beyond this point is assumed | |
7804 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7805 | then the memory is not reclaimed. */ |
7806 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 7807 | |
c3f6f71d JM |
7808 | /* Resolve all line numbers to PC's and verify that the addresses |
7809 | are ok for the target. */ | |
0101ce28 | 7810 | if (!pending) |
f8eba3c6 TT |
7811 | { |
7812 | int ix; | |
7813 | struct linespec_sals *iter; | |
7814 | ||
7815 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
7816 | breakpoint_sals_to_pc (&iter->sals); | |
7817 | } | |
c3f6f71d | 7818 | |
7a697b8d | 7819 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 7820 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
7821 | { |
7822 | int ix; | |
7823 | struct linespec_sals *iter; | |
7824 | ||
7825 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
7826 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
7827 | } | |
7a697b8d | 7828 | |
c3f6f71d JM |
7829 | /* Verify that condition can be parsed, before setting any |
7830 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7831 | breakpoint. */ |
0101ce28 | 7832 | if (!pending) |
c3f6f71d | 7833 | { |
f8eba3c6 TT |
7834 | struct linespec_sals *lsal; |
7835 | ||
7836 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
7837 | ||
2f069f6f | 7838 | if (parse_condition_and_thread) |
72b2ff0e VP |
7839 | { |
7840 | /* Here we only parse 'arg' to separate condition | |
7841 | from thread number, so parsing in context of first | |
7842 | sal is OK. When setting the breakpoint we'll | |
7843 | re-parse it in context of each sal. */ | |
7844 | cond_string = NULL; | |
7845 | thread = -1; | |
f8eba3c6 | 7846 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
4a306c9a | 7847 | &thread, &task); |
72b2ff0e VP |
7848 | if (cond_string) |
7849 | make_cleanup (xfree, cond_string); | |
7850 | } | |
2f069f6f | 7851 | else |
72b2ff0e VP |
7852 | { |
7853 | /* Create a private copy of condition string. */ | |
7854 | if (cond_string) | |
7855 | { | |
7856 | cond_string = xstrdup (cond_string); | |
7857 | make_cleanup (xfree, cond_string); | |
7858 | } | |
7859 | } | |
0fb4aa4b PA |
7860 | |
7861 | /* If the user is creating a static tracepoint by marker id | |
7862 | (strace -m MARKER_ID), then store the sals index, so that | |
7863 | breakpoint_re_set can try to match up which of the newly | |
7864 | found markers corresponds to this one, and, don't try to | |
7865 | expand multiple locations for each sal, given than SALS | |
7866 | already should contain all sals for MARKER_ID. */ | |
7867 | if (type_wanted == bp_static_tracepoint | |
f8eba3c6 | 7868 | && is_marker_spec (copy_arg)) |
0fb4aa4b PA |
7869 | { |
7870 | int i; | |
7871 | ||
f8eba3c6 | 7872 | for (i = 0; i < lsal->sals.nelts; ++i) |
0fb4aa4b PA |
7873 | { |
7874 | struct symtabs_and_lines expanded; | |
d9b3f62e | 7875 | struct tracepoint *tp; |
0fb4aa4b | 7876 | struct cleanup *old_chain; |
f8eba3c6 | 7877 | char *addr_string; |
0fb4aa4b PA |
7878 | |
7879 | expanded.nelts = 1; | |
f8eba3c6 TT |
7880 | expanded.sals = &lsal->sals.sals[i]; |
7881 | ||
7882 | addr_string = xstrdup (canonical.addr_string); | |
7883 | old_chain = make_cleanup (xfree, addr_string); | |
0fb4aa4b | 7884 | |
d9b3f62e PA |
7885 | tp = XCNEW (struct tracepoint); |
7886 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
f8eba3c6 | 7887 | addr_string, NULL, |
d9b3f62e PA |
7888 | cond_string, type_wanted, |
7889 | tempflag ? disp_del : disp_donttouch, | |
7890 | thread, task, ignore_count, ops, | |
7891 | from_tty, enabled, internal, | |
7892 | canonical.special_display); | |
0fb4aa4b PA |
7893 | /* Given that its possible to have multiple markers with |
7894 | the same string id, if the user is creating a static | |
7895 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7896 | store the sals index, so that breakpoint_re_set can | |
7897 | try to match up which of the newly found markers | |
7898 | corresponds to this one */ | |
7899 | tp->static_trace_marker_id_idx = i; | |
d9b3f62e | 7900 | |
3ea46bff | 7901 | install_breakpoint (internal, &tp->base, 0); |
d9b3f62e | 7902 | |
f8eba3c6 | 7903 | discard_cleanups (old_chain); |
0fb4aa4b PA |
7904 | } |
7905 | } | |
7906 | else | |
f8eba3c6 | 7907 | create_breakpoints_sal (gdbarch, &canonical, cond_string, |
3e43a32a MS |
7908 | type_wanted, |
7909 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 7910 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 7911 | enabled, internal); |
c906108c | 7912 | } |
0101ce28 JJ |
7913 | else |
7914 | { | |
0101ce28 JJ |
7915 | struct breakpoint *b; |
7916 | ||
0101ce28 JJ |
7917 | make_cleanup (xfree, copy_arg); |
7918 | ||
bfccc43c YQ |
7919 | if (is_tracepoint_type (type_wanted)) |
7920 | { | |
7921 | struct tracepoint *t; | |
7922 | ||
7923 | t = XCNEW (struct tracepoint); | |
7924 | b = &t->base; | |
7925 | } | |
7926 | else | |
7927 | b = XNEW (struct breakpoint); | |
7928 | ||
7929 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
7930 | ||
f8eba3c6 | 7931 | b->addr_string = copy_arg; |
72b2ff0e | 7932 | b->cond_string = NULL; |
0101ce28 | 7933 | b->ignore_count = ignore_count; |
0101ce28 | 7934 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7935 | b->condition_not_parsed = 1; |
41447f92 | 7936 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
7937 | if ((type_wanted != bp_breakpoint |
7938 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 7939 | b->pspace = current_program_space; |
8bea4e01 | 7940 | |
bfccc43c | 7941 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
7942 | } |
7943 | ||
f8eba3c6 | 7944 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 7945 | { |
3e43a32a MS |
7946 | warning (_("Multiple breakpoints were set.\nUse the " |
7947 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7948 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7949 | } |
7950 | ||
80c99de1 PA |
7951 | /* That's it. Discard the cleanups for data inserted into the |
7952 | breakpoint. */ | |
7953 | discard_cleanups (bkpt_chain); | |
7954 | /* But cleanup everything else. */ | |
c3f6f71d | 7955 | do_cleanups (old_chain); |
217dc9e2 | 7956 | |
80c99de1 | 7957 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7958 | update_global_location_list (1); |
fd9b8c24 PA |
7959 | |
7960 | return 1; | |
c3f6f71d | 7961 | } |
c906108c | 7962 | |
348d480f | 7963 | /* Set a breakpoint. |
72b2ff0e VP |
7964 | ARG is a string describing breakpoint address, |
7965 | condition, and thread. | |
7966 | FLAG specifies if a breakpoint is hardware on, | |
7967 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7968 | and BP_TEMPFLAG. */ | |
348d480f | 7969 | |
98deb0da | 7970 | static void |
72b2ff0e | 7971 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7972 | { |
72b2ff0e | 7973 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7974 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7975 | ? bp_hardware_breakpoint | |
7976 | : bp_breakpoint); | |
c3f6f71d | 7977 | |
8cdf0e15 VP |
7978 | create_breakpoint (get_current_arch (), |
7979 | arg, | |
7980 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7981 | tempflag, type_wanted, |
8cdf0e15 VP |
7982 | 0 /* Ignore count */, |
7983 | pending_break_support, | |
348d480f | 7984 | &bkpt_breakpoint_ops, |
8cdf0e15 | 7985 | from_tty, |
84f4c1fe PM |
7986 | 1 /* enabled */, |
7987 | 0 /* internal */); | |
c906108c SS |
7988 | } |
7989 | ||
c906108c SS |
7990 | /* Helper function for break_command_1 and disassemble_command. */ |
7991 | ||
7992 | void | |
fba45db2 | 7993 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7994 | { |
7995 | CORE_ADDR pc; | |
7996 | ||
7997 | if (sal->pc == 0 && sal->symtab != NULL) | |
7998 | { | |
7999 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 8000 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
8001 | sal->line, sal->symtab->filename); |
8002 | sal->pc = pc; | |
6a048695 | 8003 | |
4a64f543 MS |
8004 | /* If this SAL corresponds to a breakpoint inserted using a line |
8005 | number, then skip the function prologue if necessary. */ | |
6a048695 | 8006 | if (sal->explicit_line) |
059acae7 | 8007 | skip_prologue_sal (sal); |
c906108c SS |
8008 | } |
8009 | ||
8010 | if (sal->section == 0 && sal->symtab != NULL) | |
8011 | { | |
8012 | struct blockvector *bv; | |
c5aa993b JM |
8013 | struct block *b; |
8014 | struct symbol *sym; | |
c906108c | 8015 | |
801e3a5b | 8016 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
8017 | if (bv != NULL) |
8018 | { | |
7f0df278 | 8019 | sym = block_linkage_function (b); |
c906108c SS |
8020 | if (sym != NULL) |
8021 | { | |
8022 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 8023 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
8024 | } |
8025 | else | |
8026 | { | |
4a64f543 MS |
8027 | /* It really is worthwhile to have the section, so we'll |
8028 | just have to look harder. This case can be executed | |
8029 | if we have line numbers but no functions (as can | |
8030 | happen in assembly source). */ | |
c906108c | 8031 | |
c5aa993b | 8032 | struct minimal_symbol *msym; |
6c95b8df PA |
8033 | struct cleanup *old_chain = save_current_space_and_thread (); |
8034 | ||
8035 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8036 | |
8037 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8038 | if (msym) | |
714835d5 | 8039 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8040 | |
8041 | do_cleanups (old_chain); | |
c906108c SS |
8042 | } |
8043 | } | |
8044 | } | |
8045 | } | |
8046 | ||
8047 | void | |
fba45db2 | 8048 | break_command (char *arg, int from_tty) |
c906108c | 8049 | { |
db107f19 | 8050 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8051 | } |
8052 | ||
c906108c | 8053 | void |
fba45db2 | 8054 | tbreak_command (char *arg, int from_tty) |
c906108c | 8055 | { |
db107f19 | 8056 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8057 | } |
8058 | ||
c906108c | 8059 | static void |
fba45db2 | 8060 | hbreak_command (char *arg, int from_tty) |
c906108c | 8061 | { |
db107f19 | 8062 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8063 | } |
8064 | ||
8065 | static void | |
fba45db2 | 8066 | thbreak_command (char *arg, int from_tty) |
c906108c | 8067 | { |
db107f19 | 8068 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8069 | } |
8070 | ||
8071 | static void | |
fba45db2 | 8072 | stop_command (char *arg, int from_tty) |
c906108c | 8073 | { |
a3f17187 | 8074 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8075 | Usage: stop in <function | address>\n\ |
a3f17187 | 8076 | stop at <line>\n")); |
c906108c SS |
8077 | } |
8078 | ||
8079 | static void | |
fba45db2 | 8080 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8081 | { |
8082 | int badInput = 0; | |
8083 | ||
c5aa993b | 8084 | if (arg == (char *) NULL) |
c906108c SS |
8085 | badInput = 1; |
8086 | else if (*arg != '*') | |
8087 | { | |
8088 | char *argptr = arg; | |
8089 | int hasColon = 0; | |
8090 | ||
4a64f543 | 8091 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8092 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8093 | function/method name. */ |
c906108c | 8094 | while (*argptr && !hasColon) |
c5aa993b JM |
8095 | { |
8096 | hasColon = (*argptr == ':'); | |
8097 | argptr++; | |
8098 | } | |
c906108c SS |
8099 | |
8100 | if (hasColon) | |
c5aa993b | 8101 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8102 | else |
c5aa993b | 8103 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8104 | } |
8105 | ||
8106 | if (badInput) | |
a3f17187 | 8107 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8108 | else |
db107f19 | 8109 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8110 | } |
8111 | ||
8112 | static void | |
fba45db2 | 8113 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8114 | { |
8115 | int badInput = 0; | |
8116 | ||
c5aa993b | 8117 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8118 | badInput = 1; |
8119 | else | |
8120 | { | |
8121 | char *argptr = arg; | |
8122 | int hasColon = 0; | |
8123 | ||
4a64f543 MS |
8124 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8125 | it is probably a line number. */ | |
c906108c | 8126 | while (*argptr && !hasColon) |
c5aa993b JM |
8127 | { |
8128 | hasColon = (*argptr == ':'); | |
8129 | argptr++; | |
8130 | } | |
c906108c SS |
8131 | |
8132 | if (hasColon) | |
c5aa993b | 8133 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8134 | else |
c5aa993b | 8135 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8136 | } |
8137 | ||
8138 | if (badInput) | |
a3f17187 | 8139 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8140 | else |
db107f19 | 8141 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8142 | } |
8143 | ||
f1310107 TJB |
8144 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
8145 | ranged breakpoints. */ | |
8146 | ||
8147 | static int | |
8148 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
8149 | struct address_space *aspace, | |
8150 | CORE_ADDR bp_addr) | |
8151 | { | |
8152 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, | |
8153 | bl->length, aspace, bp_addr); | |
8154 | } | |
8155 | ||
8156 | /* Implement the "resources_needed" breakpoint_ops method for | |
8157 | ranged breakpoints. */ | |
8158 | ||
8159 | static int | |
8160 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
8161 | { | |
8162 | return target_ranged_break_num_registers (); | |
8163 | } | |
8164 | ||
8165 | /* Implement the "print_it" breakpoint_ops method for | |
8166 | ranged breakpoints. */ | |
8167 | ||
8168 | static enum print_stop_action | |
348d480f | 8169 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 8170 | { |
348d480f | 8171 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 8172 | struct bp_location *bl = b->loc; |
79a45e25 | 8173 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8174 | |
8175 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8176 | ||
8177 | /* Ranged breakpoints have only one location. */ | |
8178 | gdb_assert (bl && bl->next == NULL); | |
8179 | ||
8180 | annotate_breakpoint (b->number); | |
8181 | if (b->disposition == disp_del) | |
8182 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
8183 | else | |
8184 | ui_out_text (uiout, "\nRanged breakpoint "); | |
8185 | if (ui_out_is_mi_like_p (uiout)) | |
8186 | { | |
8187 | ui_out_field_string (uiout, "reason", | |
8188 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8189 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8190 | } | |
8191 | ui_out_field_int (uiout, "bkptno", b->number); | |
8192 | ui_out_text (uiout, ", "); | |
8193 | ||
8194 | return PRINT_SRC_AND_LOC; | |
8195 | } | |
8196 | ||
8197 | /* Implement the "print_one" breakpoint_ops method for | |
8198 | ranged breakpoints. */ | |
8199 | ||
8200 | static void | |
8201 | print_one_ranged_breakpoint (struct breakpoint *b, | |
8202 | struct bp_location **last_loc) | |
8203 | { | |
8204 | struct bp_location *bl = b->loc; | |
8205 | struct value_print_options opts; | |
79a45e25 | 8206 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8207 | |
8208 | /* Ranged breakpoints have only one location. */ | |
8209 | gdb_assert (bl && bl->next == NULL); | |
8210 | ||
8211 | get_user_print_options (&opts); | |
8212 | ||
8213 | if (opts.addressprint) | |
8214 | /* We don't print the address range here, it will be printed later | |
8215 | by print_one_detail_ranged_breakpoint. */ | |
8216 | ui_out_field_skip (uiout, "addr"); | |
8217 | annotate_field (5); | |
8218 | print_breakpoint_location (b, bl); | |
8219 | *last_loc = bl; | |
8220 | } | |
8221 | ||
8222 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8223 | ranged breakpoints. */ | |
8224 | ||
8225 | static void | |
8226 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
8227 | struct ui_out *uiout) | |
8228 | { | |
8229 | CORE_ADDR address_start, address_end; | |
8230 | struct bp_location *bl = b->loc; | |
8231 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
8232 | struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb); | |
8233 | ||
8234 | gdb_assert (bl); | |
8235 | ||
8236 | address_start = bl->address; | |
8237 | address_end = address_start + bl->length - 1; | |
8238 | ||
8239 | ui_out_text (uiout, "\taddress range: "); | |
8240 | fprintf_unfiltered (stb->stream, "[%s, %s]", | |
8241 | print_core_address (bl->gdbarch, address_start), | |
8242 | print_core_address (bl->gdbarch, address_end)); | |
8243 | ui_out_field_stream (uiout, "addr", stb); | |
8244 | ui_out_text (uiout, "\n"); | |
8245 | ||
8246 | do_cleanups (cleanup); | |
8247 | } | |
8248 | ||
8249 | /* Implement the "print_mention" breakpoint_ops method for | |
8250 | ranged breakpoints. */ | |
8251 | ||
8252 | static void | |
8253 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
8254 | { | |
8255 | struct bp_location *bl = b->loc; | |
79a45e25 | 8256 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8257 | |
8258 | gdb_assert (bl); | |
8259 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8260 | ||
8261 | if (ui_out_is_mi_like_p (uiout)) | |
8262 | return; | |
8263 | ||
8264 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
8265 | b->number, paddress (bl->gdbarch, bl->address), | |
8266 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
8267 | } | |
8268 | ||
8269 | /* Implement the "print_recreate" breakpoint_ops method for | |
8270 | ranged breakpoints. */ | |
8271 | ||
8272 | static void | |
8273 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
8274 | { | |
8275 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
8276 | b->addr_string_range_end); | |
d9b3f62e | 8277 | print_recreate_thread (b, fp); |
f1310107 TJB |
8278 | } |
8279 | ||
8280 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
8281 | ||
2060206e | 8282 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
8283 | |
8284 | /* Find the address where the end of the breakpoint range should be | |
8285 | placed, given the SAL of the end of the range. This is so that if | |
8286 | the user provides a line number, the end of the range is set to the | |
8287 | last instruction of the given line. */ | |
8288 | ||
8289 | static CORE_ADDR | |
8290 | find_breakpoint_range_end (struct symtab_and_line sal) | |
8291 | { | |
8292 | CORE_ADDR end; | |
8293 | ||
8294 | /* If the user provided a PC value, use it. Otherwise, | |
8295 | find the address of the end of the given location. */ | |
8296 | if (sal.explicit_pc) | |
8297 | end = sal.pc; | |
8298 | else | |
8299 | { | |
8300 | int ret; | |
8301 | CORE_ADDR start; | |
8302 | ||
8303 | ret = find_line_pc_range (sal, &start, &end); | |
8304 | if (!ret) | |
8305 | error (_("Could not find location of the end of the range.")); | |
8306 | ||
8307 | /* find_line_pc_range returns the start of the next line. */ | |
8308 | end--; | |
8309 | } | |
8310 | ||
8311 | return end; | |
8312 | } | |
8313 | ||
8314 | /* Implement the "break-range" CLI command. */ | |
8315 | ||
8316 | static void | |
8317 | break_range_command (char *arg, int from_tty) | |
8318 | { | |
8319 | char *arg_start, *addr_string_start, *addr_string_end; | |
8320 | struct linespec_result canonical_start, canonical_end; | |
8321 | int bp_count, can_use_bp, length; | |
8322 | CORE_ADDR end; | |
8323 | struct breakpoint *b; | |
8324 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 8325 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 8326 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
8327 | |
8328 | /* We don't support software ranged breakpoints. */ | |
8329 | if (target_ranged_break_num_registers () < 0) | |
8330 | error (_("This target does not support hardware ranged breakpoints.")); | |
8331 | ||
8332 | bp_count = hw_breakpoint_used_count (); | |
8333 | bp_count += target_ranged_break_num_registers (); | |
8334 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
8335 | bp_count, 0); | |
8336 | if (can_use_bp < 0) | |
8337 | error (_("Hardware breakpoints used exceeds limit.")); | |
8338 | ||
f8eba3c6 | 8339 | arg = skip_spaces (arg); |
f1310107 TJB |
8340 | if (arg == NULL || arg[0] == '\0') |
8341 | error(_("No address range specified.")); | |
8342 | ||
f1310107 TJB |
8343 | init_linespec_result (&canonical_start); |
8344 | ||
f8eba3c6 TT |
8345 | arg_start = arg; |
8346 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 8347 | |
f8eba3c6 | 8348 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
8349 | |
8350 | if (arg[0] != ',') | |
8351 | error (_("Too few arguments.")); | |
f8eba3c6 | 8352 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 8353 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
8354 | |
8355 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
8356 | ||
8357 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
8358 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
8359 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
8360 | ||
f8eba3c6 TT |
8361 | sal_start = lsal_start->sals.sals[0]; |
8362 | addr_string_start = savestring (arg_start, arg - arg_start); | |
8363 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
8364 | |
8365 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 8366 | arg = skip_spaces (arg); |
f1310107 TJB |
8367 | |
8368 | /* Parse the end location. */ | |
8369 | ||
f1310107 TJB |
8370 | init_linespec_result (&canonical_end); |
8371 | arg_start = arg; | |
8372 | ||
f8eba3c6 | 8373 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
8374 | parse_breakpoint_sals because we need to specify the start location's |
8375 | symtab and line as the default symtab and line for the end of the | |
8376 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
8377 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
8378 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
8379 | sal_start.symtab, sal_start.line, | |
8380 | &canonical_end, NULL, NULL); | |
8381 | ||
8382 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 8383 | |
f8eba3c6 | 8384 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 8385 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
8386 | |
8387 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
8388 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
8389 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
8390 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
8391 | ||
f8eba3c6 TT |
8392 | sal_end = lsal_end->sals.sals[0]; |
8393 | addr_string_end = savestring (arg_start, arg - arg_start); | |
8394 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
8395 | |
8396 | end = find_breakpoint_range_end (sal_end); | |
8397 | if (sal_start.pc > end) | |
177b42fe | 8398 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
8399 | |
8400 | length = end - sal_start.pc + 1; | |
8401 | if (length < 0) | |
8402 | /* Length overflowed. */ | |
8403 | error (_("Address range too large.")); | |
8404 | else if (length == 1) | |
8405 | { | |
8406 | /* This range is simple enough to be handled by | |
8407 | the `hbreak' command. */ | |
8408 | hbreak_command (addr_string_start, 1); | |
8409 | ||
8410 | do_cleanups (cleanup_bkpt); | |
8411 | ||
8412 | return; | |
8413 | } | |
8414 | ||
8415 | /* Now set up the breakpoint. */ | |
8416 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 8417 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
8418 | set_breakpoint_count (breakpoint_count + 1); |
8419 | b->number = breakpoint_count; | |
8420 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
8421 | b->addr_string = xstrdup (addr_string_start); |
8422 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
8423 | b->loc->length = length; |
8424 | ||
f8eba3c6 | 8425 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
8426 | |
8427 | mention (b); | |
8d3788bd | 8428 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
8429 | update_global_location_list (1); |
8430 | } | |
8431 | ||
4a64f543 MS |
8432 | /* Return non-zero if EXP is verified as constant. Returned zero |
8433 | means EXP is variable. Also the constant detection may fail for | |
8434 | some constant expressions and in such case still falsely return | |
8435 | zero. */ | |
65d79d4b SDJ |
8436 | static int |
8437 | watchpoint_exp_is_const (const struct expression *exp) | |
8438 | { | |
8439 | int i = exp->nelts; | |
8440 | ||
8441 | while (i > 0) | |
8442 | { | |
8443 | int oplenp, argsp; | |
8444 | ||
8445 | /* We are only interested in the descriptor of each element. */ | |
8446 | operator_length (exp, i, &oplenp, &argsp); | |
8447 | i -= oplenp; | |
8448 | ||
8449 | switch (exp->elts[i].opcode) | |
8450 | { | |
8451 | case BINOP_ADD: | |
8452 | case BINOP_SUB: | |
8453 | case BINOP_MUL: | |
8454 | case BINOP_DIV: | |
8455 | case BINOP_REM: | |
8456 | case BINOP_MOD: | |
8457 | case BINOP_LSH: | |
8458 | case BINOP_RSH: | |
8459 | case BINOP_LOGICAL_AND: | |
8460 | case BINOP_LOGICAL_OR: | |
8461 | case BINOP_BITWISE_AND: | |
8462 | case BINOP_BITWISE_IOR: | |
8463 | case BINOP_BITWISE_XOR: | |
8464 | case BINOP_EQUAL: | |
8465 | case BINOP_NOTEQUAL: | |
8466 | case BINOP_LESS: | |
8467 | case BINOP_GTR: | |
8468 | case BINOP_LEQ: | |
8469 | case BINOP_GEQ: | |
8470 | case BINOP_REPEAT: | |
8471 | case BINOP_COMMA: | |
8472 | case BINOP_EXP: | |
8473 | case BINOP_MIN: | |
8474 | case BINOP_MAX: | |
8475 | case BINOP_INTDIV: | |
8476 | case BINOP_CONCAT: | |
8477 | case BINOP_IN: | |
8478 | case BINOP_RANGE: | |
8479 | case TERNOP_COND: | |
8480 | case TERNOP_SLICE: | |
8481 | case TERNOP_SLICE_COUNT: | |
8482 | ||
8483 | case OP_LONG: | |
8484 | case OP_DOUBLE: | |
8485 | case OP_DECFLOAT: | |
8486 | case OP_LAST: | |
8487 | case OP_COMPLEX: | |
8488 | case OP_STRING: | |
8489 | case OP_BITSTRING: | |
8490 | case OP_ARRAY: | |
8491 | case OP_TYPE: | |
8492 | case OP_NAME: | |
8493 | case OP_OBJC_NSSTRING: | |
8494 | ||
8495 | case UNOP_NEG: | |
8496 | case UNOP_LOGICAL_NOT: | |
8497 | case UNOP_COMPLEMENT: | |
8498 | case UNOP_ADDR: | |
8499 | case UNOP_HIGH: | |
4a64f543 MS |
8500 | /* Unary, binary and ternary operators: We have to check |
8501 | their operands. If they are constant, then so is the | |
8502 | result of that operation. For instance, if A and B are | |
8503 | determined to be constants, then so is "A + B". | |
8504 | ||
8505 | UNOP_IND is one exception to the rule above, because the | |
8506 | value of *ADDR is not necessarily a constant, even when | |
8507 | ADDR is. */ | |
65d79d4b SDJ |
8508 | break; |
8509 | ||
8510 | case OP_VAR_VALUE: | |
8511 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8512 | |
65d79d4b | 8513 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8514 | possible that a buggy compiler could mark a variable as |
8515 | constant even when it is not, and TYPE_CONST would return | |
8516 | true in this case, while SYMBOL_CLASS wouldn't. | |
8517 | ||
8518 | We also have to check for function symbols because they | |
8519 | are always constant. */ | |
65d79d4b SDJ |
8520 | { |
8521 | struct symbol *s = exp->elts[i + 2].symbol; | |
8522 | ||
8523 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8524 | && SYMBOL_CLASS (s) != LOC_CONST | |
8525 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8526 | return 0; | |
8527 | break; | |
8528 | } | |
8529 | ||
8530 | /* The default action is to return 0 because we are using | |
8531 | the optimistic approach here: If we don't know something, | |
8532 | then it is not a constant. */ | |
8533 | default: | |
8534 | return 0; | |
8535 | } | |
8536 | } | |
8537 | ||
8538 | return 1; | |
8539 | } | |
8540 | ||
3a5c3e22 PA |
8541 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
8542 | ||
8543 | static void | |
8544 | dtor_watchpoint (struct breakpoint *self) | |
8545 | { | |
8546 | struct watchpoint *w = (struct watchpoint *) self; | |
8547 | ||
8548 | xfree (w->cond_exp); | |
8549 | xfree (w->exp); | |
8550 | xfree (w->exp_string); | |
8551 | xfree (w->exp_string_reparse); | |
8552 | value_free (w->val); | |
8553 | ||
8554 | base_breakpoint_ops.dtor (self); | |
8555 | } | |
8556 | ||
348d480f PA |
8557 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
8558 | ||
8559 | static void | |
8560 | re_set_watchpoint (struct breakpoint *b) | |
8561 | { | |
3a5c3e22 PA |
8562 | struct watchpoint *w = (struct watchpoint *) b; |
8563 | ||
348d480f PA |
8564 | /* Watchpoint can be either on expression using entirely global |
8565 | variables, or it can be on local variables. | |
8566 | ||
8567 | Watchpoints of the first kind are never auto-deleted, and even | |
8568 | persist across program restarts. Since they can use variables | |
8569 | from shared libraries, we need to reparse expression as libraries | |
8570 | are loaded and unloaded. | |
8571 | ||
8572 | Watchpoints on local variables can also change meaning as result | |
8573 | of solib event. For example, if a watchpoint uses both a local | |
8574 | and a global variables in expression, it's a local watchpoint, | |
8575 | but unloading of a shared library will make the expression | |
8576 | invalid. This is not a very common use case, but we still | |
8577 | re-evaluate expression, to avoid surprises to the user. | |
8578 | ||
8579 | Note that for local watchpoints, we re-evaluate it only if | |
8580 | watchpoints frame id is still valid. If it's not, it means the | |
8581 | watchpoint is out of scope and will be deleted soon. In fact, | |
8582 | I'm not sure we'll ever be called in this case. | |
8583 | ||
8584 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 8585 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 8586 | |
3a5c3e22 PA |
8587 | Don't do anything about disabled watchpoints, since they will be |
8588 | reevaluated again when enabled. */ | |
8589 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
8590 | } |
8591 | ||
77b06cd7 TJB |
8592 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8593 | ||
8594 | static int | |
8595 | insert_watchpoint (struct bp_location *bl) | |
8596 | { | |
3a5c3e22 PA |
8597 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8598 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8599 | |
8600 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8601 | w->cond_exp); |
77b06cd7 TJB |
8602 | } |
8603 | ||
8604 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8605 | ||
8606 | static int | |
8607 | remove_watchpoint (struct bp_location *bl) | |
8608 | { | |
3a5c3e22 PA |
8609 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8610 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8611 | |
8612 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8613 | w->cond_exp); |
e09342b5 TJB |
8614 | } |
8615 | ||
e09342b5 | 8616 | static int |
348d480f PA |
8617 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
8618 | struct address_space *aspace, CORE_ADDR bp_addr) | |
e09342b5 | 8619 | { |
348d480f | 8620 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 8621 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 8622 | |
348d480f PA |
8623 | /* Continuable hardware watchpoints are treated as non-existent if the |
8624 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
8625 | some data address). Otherwise gdb won't stop on a break instruction | |
8626 | in the code (not from a breakpoint) when a hardware watchpoint has | |
8627 | been defined. Also skip watchpoints which we know did not trigger | |
8628 | (did not match the data address). */ | |
8629 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 8630 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 8631 | return 0; |
9c06b0b4 | 8632 | |
348d480f | 8633 | return 1; |
9c06b0b4 TJB |
8634 | } |
8635 | ||
348d480f PA |
8636 | static void |
8637 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 8638 | { |
348d480f | 8639 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 8640 | |
348d480f | 8641 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
8642 | } |
8643 | ||
8644 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 8645 | hardware watchpoints. */ |
9c06b0b4 TJB |
8646 | |
8647 | static int | |
348d480f | 8648 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 8649 | { |
3a5c3e22 PA |
8650 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8651 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
8652 | |
8653 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
8654 | } |
8655 | ||
8656 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 8657 | hardware watchpoints. */ |
9c06b0b4 TJB |
8658 | |
8659 | static int | |
348d480f | 8660 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 8661 | { |
efa80663 PA |
8662 | /* Read and access watchpoints only work with hardware support. */ |
8663 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
8664 | } |
8665 | ||
9c06b0b4 | 8666 | static enum print_stop_action |
348d480f | 8667 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 8668 | { |
348d480f PA |
8669 | struct cleanup *old_chain; |
8670 | struct breakpoint *b; | |
8671 | const struct bp_location *bl; | |
8672 | struct ui_stream *stb; | |
8673 | enum print_stop_action result; | |
3a5c3e22 | 8674 | struct watchpoint *w; |
79a45e25 | 8675 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8676 | |
8677 | gdb_assert (bs->bp_location_at != NULL); | |
8678 | ||
8679 | bl = bs->bp_location_at; | |
8680 | b = bs->breakpoint_at; | |
3a5c3e22 | 8681 | w = (struct watchpoint *) b; |
348d480f PA |
8682 | |
8683 | stb = ui_out_stream_new (uiout); | |
8684 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
9c06b0b4 TJB |
8685 | |
8686 | switch (b->type) | |
8687 | { | |
348d480f | 8688 | case bp_watchpoint: |
9c06b0b4 TJB |
8689 | case bp_hardware_watchpoint: |
8690 | annotate_watchpoint (b->number); | |
8691 | if (ui_out_is_mi_like_p (uiout)) | |
8692 | ui_out_field_string | |
8693 | (uiout, "reason", | |
8694 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8695 | mention (b); |
8696 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8697 | ui_out_text (uiout, "\nOld value = "); | |
8698 | watchpoint_value_print (bs->old_val, stb->stream); | |
8699 | ui_out_field_stream (uiout, "old", stb); | |
8700 | ui_out_text (uiout, "\nNew value = "); | |
3a5c3e22 | 8701 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8702 | ui_out_field_stream (uiout, "new", stb); |
8703 | ui_out_text (uiout, "\n"); | |
8704 | /* More than one watchpoint may have been triggered. */ | |
8705 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8706 | break; |
8707 | ||
8708 | case bp_read_watchpoint: | |
8709 | if (ui_out_is_mi_like_p (uiout)) | |
8710 | ui_out_field_string | |
8711 | (uiout, "reason", | |
8712 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8713 | mention (b); |
8714 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8715 | ui_out_text (uiout, "\nValue = "); | |
3a5c3e22 | 8716 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8717 | ui_out_field_stream (uiout, "value", stb); |
8718 | ui_out_text (uiout, "\n"); | |
8719 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8720 | break; |
8721 | ||
8722 | case bp_access_watchpoint: | |
348d480f PA |
8723 | if (bs->old_val != NULL) |
8724 | { | |
8725 | annotate_watchpoint (b->number); | |
8726 | if (ui_out_is_mi_like_p (uiout)) | |
8727 | ui_out_field_string | |
8728 | (uiout, "reason", | |
8729 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8730 | mention (b); | |
8731 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8732 | ui_out_text (uiout, "\nOld value = "); | |
8733 | watchpoint_value_print (bs->old_val, stb->stream); | |
8734 | ui_out_field_stream (uiout, "old", stb); | |
8735 | ui_out_text (uiout, "\nNew value = "); | |
8736 | } | |
8737 | else | |
8738 | { | |
8739 | mention (b); | |
8740 | if (ui_out_is_mi_like_p (uiout)) | |
8741 | ui_out_field_string | |
8742 | (uiout, "reason", | |
8743 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8744 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8745 | ui_out_text (uiout, "\nValue = "); | |
8746 | } | |
3a5c3e22 | 8747 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8748 | ui_out_field_stream (uiout, "new", stb); |
8749 | ui_out_text (uiout, "\n"); | |
8750 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8751 | break; |
8752 | default: | |
348d480f | 8753 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
8754 | } |
8755 | ||
348d480f PA |
8756 | do_cleanups (old_chain); |
8757 | return result; | |
8758 | } | |
8759 | ||
8760 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
8761 | watchpoints. */ | |
8762 | ||
8763 | static void | |
8764 | print_mention_watchpoint (struct breakpoint *b) | |
8765 | { | |
8766 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 8767 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 8768 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8769 | |
8770 | switch (b->type) | |
8771 | { | |
8772 | case bp_watchpoint: | |
8773 | ui_out_text (uiout, "Watchpoint "); | |
8774 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8775 | break; | |
8776 | case bp_hardware_watchpoint: | |
8777 | ui_out_text (uiout, "Hardware watchpoint "); | |
8778 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8779 | break; | |
8780 | case bp_read_watchpoint: | |
8781 | ui_out_text (uiout, "Hardware read watchpoint "); | |
8782 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8783 | break; | |
8784 | case bp_access_watchpoint: | |
8785 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
8786 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8787 | break; | |
8788 | default: | |
8789 | internal_error (__FILE__, __LINE__, | |
8790 | _("Invalid hardware watchpoint type.")); | |
8791 | } | |
8792 | ||
8793 | ui_out_field_int (uiout, "number", b->number); | |
8794 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8795 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
8796 | do_cleanups (ui_out_chain); |
8797 | } | |
8798 | ||
8799 | /* Implement the "print_recreate" breakpoint_ops method for | |
8800 | watchpoints. */ | |
8801 | ||
8802 | static void | |
8803 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8804 | { | |
3a5c3e22 PA |
8805 | struct watchpoint *w = (struct watchpoint *) b; |
8806 | ||
348d480f PA |
8807 | switch (b->type) |
8808 | { | |
8809 | case bp_watchpoint: | |
8810 | case bp_hardware_watchpoint: | |
8811 | fprintf_unfiltered (fp, "watch"); | |
8812 | break; | |
8813 | case bp_read_watchpoint: | |
8814 | fprintf_unfiltered (fp, "rwatch"); | |
8815 | break; | |
8816 | case bp_access_watchpoint: | |
8817 | fprintf_unfiltered (fp, "awatch"); | |
8818 | break; | |
8819 | default: | |
8820 | internal_error (__FILE__, __LINE__, | |
8821 | _("Invalid watchpoint type.")); | |
8822 | } | |
8823 | ||
3a5c3e22 | 8824 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 8825 | print_recreate_thread (b, fp); |
348d480f PA |
8826 | } |
8827 | ||
8828 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8829 | ||
2060206e | 8830 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
8831 | |
8832 | /* Implement the "insert" breakpoint_ops method for | |
8833 | masked hardware watchpoints. */ | |
8834 | ||
8835 | static int | |
8836 | insert_masked_watchpoint (struct bp_location *bl) | |
8837 | { | |
3a5c3e22 PA |
8838 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8839 | ||
8840 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8841 | bl->watchpoint_type); |
8842 | } | |
8843 | ||
8844 | /* Implement the "remove" breakpoint_ops method for | |
8845 | masked hardware watchpoints. */ | |
8846 | ||
8847 | static int | |
8848 | remove_masked_watchpoint (struct bp_location *bl) | |
8849 | { | |
3a5c3e22 PA |
8850 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8851 | ||
8852 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8853 | bl->watchpoint_type); |
8854 | } | |
8855 | ||
8856 | /* Implement the "resources_needed" breakpoint_ops method for | |
8857 | masked hardware watchpoints. */ | |
8858 | ||
8859 | static int | |
8860 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
8861 | { | |
3a5c3e22 PA |
8862 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8863 | ||
8864 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
8865 | } |
8866 | ||
8867 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
8868 | masked hardware watchpoints. */ | |
8869 | ||
8870 | static int | |
8871 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
8872 | { | |
8873 | return 0; | |
8874 | } | |
8875 | ||
8876 | /* Implement the "print_it" breakpoint_ops method for | |
8877 | masked hardware watchpoints. */ | |
8878 | ||
8879 | static enum print_stop_action | |
8880 | print_it_masked_watchpoint (bpstat bs) | |
8881 | { | |
8882 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 8883 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8884 | |
8885 | /* Masked watchpoints have only one location. */ | |
8886 | gdb_assert (b->loc && b->loc->next == NULL); | |
8887 | ||
8888 | switch (b->type) | |
8889 | { | |
8890 | case bp_hardware_watchpoint: | |
8891 | annotate_watchpoint (b->number); | |
8892 | if (ui_out_is_mi_like_p (uiout)) | |
8893 | ui_out_field_string | |
8894 | (uiout, "reason", | |
8895 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8896 | break; | |
8897 | ||
8898 | case bp_read_watchpoint: | |
8899 | if (ui_out_is_mi_like_p (uiout)) | |
8900 | ui_out_field_string | |
8901 | (uiout, "reason", | |
8902 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8903 | break; | |
8904 | ||
8905 | case bp_access_watchpoint: | |
8906 | if (ui_out_is_mi_like_p (uiout)) | |
8907 | ui_out_field_string | |
8908 | (uiout, "reason", | |
8909 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8910 | break; | |
8911 | default: | |
8912 | internal_error (__FILE__, __LINE__, | |
8913 | _("Invalid hardware watchpoint type.")); | |
8914 | } | |
8915 | ||
8916 | mention (b); | |
9c06b0b4 TJB |
8917 | ui_out_text (uiout, _("\n\ |
8918 | Check the underlying instruction at PC for the memory\n\ | |
8919 | address and value which triggered this watchpoint.\n")); | |
8920 | ui_out_text (uiout, "\n"); | |
8921 | ||
8922 | /* More than one watchpoint may have been triggered. */ | |
8923 | return PRINT_UNKNOWN; | |
8924 | } | |
8925 | ||
8926 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8927 | masked hardware watchpoints. */ | |
8928 | ||
8929 | static void | |
8930 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
8931 | struct ui_out *uiout) | |
8932 | { | |
3a5c3e22 PA |
8933 | struct watchpoint *w = (struct watchpoint *) b; |
8934 | ||
9c06b0b4 TJB |
8935 | /* Masked watchpoints have only one location. */ |
8936 | gdb_assert (b->loc && b->loc->next == NULL); | |
8937 | ||
8938 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 8939 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
8940 | ui_out_text (uiout, "\n"); |
8941 | } | |
8942 | ||
8943 | /* Implement the "print_mention" breakpoint_ops method for | |
8944 | masked hardware watchpoints. */ | |
8945 | ||
8946 | static void | |
8947 | print_mention_masked_watchpoint (struct breakpoint *b) | |
8948 | { | |
3a5c3e22 | 8949 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 8950 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
8951 | struct cleanup *ui_out_chain; |
8952 | ||
8953 | switch (b->type) | |
8954 | { | |
8955 | case bp_hardware_watchpoint: | |
8956 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
8957 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8958 | break; | |
8959 | case bp_read_watchpoint: | |
8960 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
8961 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8962 | break; | |
8963 | case bp_access_watchpoint: | |
8964 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
8965 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8966 | break; | |
8967 | default: | |
8968 | internal_error (__FILE__, __LINE__, | |
8969 | _("Invalid hardware watchpoint type.")); | |
8970 | } | |
8971 | ||
8972 | ui_out_field_int (uiout, "number", b->number); | |
8973 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8974 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
8975 | do_cleanups (ui_out_chain); |
8976 | } | |
8977 | ||
8978 | /* Implement the "print_recreate" breakpoint_ops method for | |
8979 | masked hardware watchpoints. */ | |
8980 | ||
8981 | static void | |
8982 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8983 | { | |
3a5c3e22 | 8984 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
8985 | char tmp[40]; |
8986 | ||
8987 | switch (b->type) | |
8988 | { | |
8989 | case bp_hardware_watchpoint: | |
8990 | fprintf_unfiltered (fp, "watch"); | |
8991 | break; | |
8992 | case bp_read_watchpoint: | |
8993 | fprintf_unfiltered (fp, "rwatch"); | |
8994 | break; | |
8995 | case bp_access_watchpoint: | |
8996 | fprintf_unfiltered (fp, "awatch"); | |
8997 | break; | |
8998 | default: | |
8999 | internal_error (__FILE__, __LINE__, | |
9000 | _("Invalid hardware watchpoint type.")); | |
9001 | } | |
9002 | ||
3a5c3e22 PA |
9003 | sprintf_vma (tmp, w->hw_wp_mask); |
9004 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 9005 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
9006 | } |
9007 | ||
9008 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
9009 | ||
2060206e | 9010 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
9011 | |
9012 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
9013 | ||
9014 | static int | |
9015 | is_masked_watchpoint (const struct breakpoint *b) | |
9016 | { | |
9017 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
9018 | } | |
9019 | ||
53a5351d JM |
9020 | /* accessflag: hw_write: watch write, |
9021 | hw_read: watch read, | |
9022 | hw_access: watch access (read or write) */ | |
c906108c | 9023 | static void |
84f4c1fe PM |
9024 | watch_command_1 (char *arg, int accessflag, int from_tty, |
9025 | int just_location, int internal) | |
c906108c | 9026 | { |
a9634178 | 9027 | volatile struct gdb_exception e; |
d983da9c | 9028 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 9029 | struct expression *exp; |
60e1c644 | 9030 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 9031 | struct value *val, *mark, *result; |
c906108c | 9032 | struct frame_info *frame; |
c906108c SS |
9033 | char *exp_start = NULL; |
9034 | char *exp_end = NULL; | |
9c06b0b4 TJB |
9035 | char *tok, *end_tok; |
9036 | int toklen = -1; | |
c906108c SS |
9037 | char *cond_start = NULL; |
9038 | char *cond_end = NULL; | |
c906108c | 9039 | enum bptype bp_type; |
37e4754d | 9040 | int thread = -1; |
0cf6dd15 | 9041 | int pc = 0; |
9c06b0b4 TJB |
9042 | /* Flag to indicate whether we are going to use masks for |
9043 | the hardware watchpoint. */ | |
9044 | int use_mask = 0; | |
9045 | CORE_ADDR mask = 0; | |
3a5c3e22 | 9046 | struct watchpoint *w; |
c906108c | 9047 | |
37e4754d LM |
9048 | /* Make sure that we actually have parameters to parse. */ |
9049 | if (arg != NULL && arg[0] != '\0') | |
9050 | { | |
9c06b0b4 | 9051 | char *value_start; |
37e4754d | 9052 | |
9c06b0b4 TJB |
9053 | /* Look for "parameter value" pairs at the end |
9054 | of the arguments string. */ | |
9055 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
9056 | { | |
9057 | /* Skip whitespace at the end of the argument list. */ | |
9058 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9059 | tok--; | |
9060 | ||
9061 | /* Find the beginning of the last token. | |
9062 | This is the value of the parameter. */ | |
9063 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9064 | tok--; | |
9065 | value_start = tok + 1; | |
9066 | ||
9067 | /* Skip whitespace. */ | |
9068 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9069 | tok--; | |
9070 | ||
9071 | end_tok = tok; | |
9072 | ||
9073 | /* Find the beginning of the second to last token. | |
9074 | This is the parameter itself. */ | |
9075 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9076 | tok--; | |
9077 | tok++; | |
9078 | toklen = end_tok - tok + 1; | |
9079 | ||
9080 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
9081 | { | |
9082 | /* At this point we've found a "thread" token, which means | |
9083 | the user is trying to set a watchpoint that triggers | |
9084 | only in a specific thread. */ | |
9085 | char *endp; | |
37e4754d | 9086 | |
9c06b0b4 TJB |
9087 | if (thread != -1) |
9088 | error(_("You can specify only one thread.")); | |
37e4754d | 9089 | |
9c06b0b4 TJB |
9090 | /* Extract the thread ID from the next token. */ |
9091 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 9092 | |
9c06b0b4 TJB |
9093 | /* Check if the user provided a valid numeric value for the |
9094 | thread ID. */ | |
9095 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
9096 | error (_("Invalid thread ID specification %s."), value_start); | |
9097 | ||
9098 | /* Check if the thread actually exists. */ | |
9099 | if (!valid_thread_id (thread)) | |
9100 | error (_("Unknown thread %d."), thread); | |
9101 | } | |
9102 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
9103 | { | |
9104 | /* We've found a "mask" token, which means the user wants to | |
9105 | create a hardware watchpoint that is going to have the mask | |
9106 | facility. */ | |
9107 | struct value *mask_value, *mark; | |
37e4754d | 9108 | |
9c06b0b4 TJB |
9109 | if (use_mask) |
9110 | error(_("You can specify only one mask.")); | |
37e4754d | 9111 | |
9c06b0b4 | 9112 | use_mask = just_location = 1; |
37e4754d | 9113 | |
9c06b0b4 TJB |
9114 | mark = value_mark (); |
9115 | mask_value = parse_to_comma_and_eval (&value_start); | |
9116 | mask = value_as_address (mask_value); | |
9117 | value_free_to_mark (mark); | |
9118 | } | |
9119 | else | |
9120 | /* We didn't recognize what we found. We should stop here. */ | |
9121 | break; | |
37e4754d | 9122 | |
9c06b0b4 TJB |
9123 | /* Truncate the string and get rid of the "parameter value" pair before |
9124 | the arguments string is parsed by the parse_exp_1 function. */ | |
9125 | *tok = '\0'; | |
9126 | } | |
37e4754d LM |
9127 | } |
9128 | ||
9129 | /* Parse the rest of the arguments. */ | |
c906108c SS |
9130 | innermost_block = NULL; |
9131 | exp_start = arg; | |
9132 | exp = parse_exp_1 (&arg, 0, 0); | |
9133 | exp_end = arg; | |
fa8a61dc TT |
9134 | /* Remove trailing whitespace from the expression before saving it. |
9135 | This makes the eventual display of the expression string a bit | |
9136 | prettier. */ | |
9137 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9138 | --exp_end; | |
9139 | ||
65d79d4b SDJ |
9140 | /* Checking if the expression is not constant. */ |
9141 | if (watchpoint_exp_is_const (exp)) | |
9142 | { | |
9143 | int len; | |
9144 | ||
9145 | len = exp_end - exp_start; | |
9146 | while (len > 0 && isspace (exp_start[len - 1])) | |
9147 | len--; | |
9148 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9149 | } | |
9150 | ||
c906108c SS |
9151 | exp_valid_block = innermost_block; |
9152 | mark = value_mark (); | |
a1442452 | 9153 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
9154 | |
9155 | if (just_location) | |
9156 | { | |
9c06b0b4 TJB |
9157 | int ret; |
9158 | ||
06a64a0b | 9159 | exp_valid_block = NULL; |
a1442452 | 9160 | val = value_addr (result); |
06a64a0b TT |
9161 | release_value (val); |
9162 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
9163 | |
9164 | if (use_mask) | |
9165 | { | |
9166 | ret = target_masked_watch_num_registers (value_as_address (val), | |
9167 | mask); | |
9168 | if (ret == -1) | |
9169 | error (_("This target does not support masked watchpoints.")); | |
9170 | else if (ret == -2) | |
9171 | error (_("Invalid mask or memory region.")); | |
9172 | } | |
06a64a0b TT |
9173 | } |
9174 | else if (val != NULL) | |
fa4727a6 | 9175 | release_value (val); |
c906108c | 9176 | |
e9cafbcc TT |
9177 | tok = skip_spaces (arg); |
9178 | end_tok = skip_to_space (tok); | |
c906108c SS |
9179 | |
9180 | toklen = end_tok - tok; | |
9181 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
9182 | { | |
2d134ed3 PA |
9183 | struct expression *cond; |
9184 | ||
60e1c644 | 9185 | innermost_block = NULL; |
c906108c SS |
9186 | tok = cond_start = end_tok + 1; |
9187 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
9188 | |
9189 | /* The watchpoint expression may not be local, but the condition | |
9190 | may still be. E.g.: `watch global if local > 0'. */ | |
9191 | cond_exp_valid_block = innermost_block; | |
9192 | ||
2d134ed3 | 9193 | xfree (cond); |
c906108c SS |
9194 | cond_end = tok; |
9195 | } | |
9196 | if (*tok) | |
8a3fe4f8 | 9197 | error (_("Junk at end of command.")); |
c906108c | 9198 | |
53a5351d | 9199 | if (accessflag == hw_read) |
c5aa993b | 9200 | bp_type = bp_read_watchpoint; |
53a5351d | 9201 | else if (accessflag == hw_access) |
c5aa993b JM |
9202 | bp_type = bp_access_watchpoint; |
9203 | else | |
9204 | bp_type = bp_hardware_watchpoint; | |
c906108c | 9205 | |
d983da9c | 9206 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
9207 | |
9208 | /* If the expression is "local", then set up a "watchpoint scope" | |
9209 | breakpoint at the point where we've left the scope of the watchpoint | |
9210 | expression. Create the scope breakpoint before the watchpoint, so | |
9211 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 9212 | if (exp_valid_block && frame) |
d983da9c | 9213 | { |
edb3359d DJ |
9214 | if (frame_id_p (frame_unwind_caller_id (frame))) |
9215 | { | |
9216 | scope_breakpoint | |
a6d9a66e UW |
9217 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
9218 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
9219 | bp_watchpoint_scope, |
9220 | &momentary_breakpoint_ops); | |
d983da9c | 9221 | |
edb3359d | 9222 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 9223 | |
edb3359d DJ |
9224 | /* Automatically delete the breakpoint when it hits. */ |
9225 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 9226 | |
edb3359d DJ |
9227 | /* Only break in the proper frame (help with recursion). */ |
9228 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 9229 | |
edb3359d | 9230 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
9231 | scope_breakpoint->loc->gdbarch |
9232 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
9233 | scope_breakpoint->loc->requested_address |
9234 | = frame_unwind_caller_pc (frame); | |
9235 | scope_breakpoint->loc->address | |
a6d9a66e UW |
9236 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
9237 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
9238 | scope_breakpoint->type); |
9239 | } | |
d983da9c DJ |
9240 | } |
9241 | ||
c906108c | 9242 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
9243 | |
9244 | w = XCNEW (struct watchpoint); | |
9245 | b = &w->base; | |
348d480f | 9246 | if (use_mask) |
3a5c3e22 PA |
9247 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9248 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 9249 | else |
3a5c3e22 PA |
9250 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9251 | &watchpoint_breakpoint_ops); | |
37e4754d | 9252 | b->thread = thread; |
b5de0fa7 | 9253 | b->disposition = disp_donttouch; |
348d480f | 9254 | b->pspace = current_program_space; |
3a5c3e22 PA |
9255 | w->exp = exp; |
9256 | w->exp_valid_block = exp_valid_block; | |
9257 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
9258 | if (just_location) |
9259 | { | |
9260 | struct type *t = value_type (val); | |
9261 | CORE_ADDR addr = value_as_address (val); | |
9262 | char *name; | |
9263 | ||
9264 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
9265 | name = type_to_string (t); | |
9266 | ||
3a5c3e22 | 9267 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 9268 | core_addr_to_string (addr)); |
06a64a0b TT |
9269 | xfree (name); |
9270 | ||
3a5c3e22 | 9271 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
9272 | (int) (exp_end - exp_start), exp_start); |
9273 | ||
06a64a0b TT |
9274 | /* The above expression is in C. */ |
9275 | b->language = language_c; | |
9276 | } | |
9277 | else | |
3a5c3e22 | 9278 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
9279 | |
9280 | if (use_mask) | |
9281 | { | |
3a5c3e22 | 9282 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
9283 | } |
9284 | else | |
9285 | { | |
3a5c3e22 PA |
9286 | w->val = val; |
9287 | w->val_valid = 1; | |
9c06b0b4 | 9288 | } |
77b06cd7 | 9289 | |
c906108c SS |
9290 | if (cond_start) |
9291 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9292 | else | |
9293 | b->cond_string = 0; | |
c5aa993b | 9294 | |
c906108c | 9295 | if (frame) |
f6bc2008 | 9296 | { |
3a5c3e22 PA |
9297 | w->watchpoint_frame = get_frame_id (frame); |
9298 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 9299 | } |
c906108c | 9300 | else |
f6bc2008 | 9301 | { |
3a5c3e22 PA |
9302 | w->watchpoint_frame = null_frame_id; |
9303 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 9304 | } |
c906108c | 9305 | |
d983da9c | 9306 | if (scope_breakpoint != NULL) |
c906108c | 9307 | { |
d983da9c DJ |
9308 | /* The scope breakpoint is related to the watchpoint. We will |
9309 | need to act on them together. */ | |
9310 | b->related_breakpoint = scope_breakpoint; | |
9311 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9312 | } |
d983da9c | 9313 | |
06a64a0b TT |
9314 | if (!just_location) |
9315 | value_free_to_mark (mark); | |
2d134ed3 | 9316 | |
a9634178 TJB |
9317 | TRY_CATCH (e, RETURN_MASK_ALL) |
9318 | { | |
9319 | /* Finally update the new watchpoint. This creates the locations | |
9320 | that should be inserted. */ | |
3a5c3e22 | 9321 | update_watchpoint (w, 1); |
a9634178 TJB |
9322 | } |
9323 | if (e.reason < 0) | |
9324 | { | |
9325 | delete_breakpoint (b); | |
9326 | throw_exception (e); | |
9327 | } | |
9328 | ||
3ea46bff | 9329 | install_breakpoint (internal, b, 1); |
c906108c SS |
9330 | } |
9331 | ||
e09342b5 | 9332 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 9333 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 9334 | |
c906108c | 9335 | static int |
a9634178 | 9336 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
9337 | { |
9338 | int found_memory_cnt = 0; | |
2e70b7b9 | 9339 | struct value *head = v; |
c906108c SS |
9340 | |
9341 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9342 | if (!can_use_hw_watchpoints) |
c906108c | 9343 | return 0; |
c5aa993b | 9344 | |
5c44784c JM |
9345 | /* Make sure that the value of the expression depends only upon |
9346 | memory contents, and values computed from them within GDB. If we | |
9347 | find any register references or function calls, we can't use a | |
9348 | hardware watchpoint. | |
9349 | ||
9350 | The idea here is that evaluating an expression generates a series | |
9351 | of values, one holding the value of every subexpression. (The | |
9352 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9353 | a*b+c.) GDB's values hold almost enough information to establish | |
9354 | the criteria given above --- they identify memory lvalues, | |
9355 | register lvalues, computed values, etcetera. So we can evaluate | |
9356 | the expression, and then scan the chain of values that leaves | |
9357 | behind to decide whether we can detect any possible change to the | |
9358 | expression's final value using only hardware watchpoints. | |
9359 | ||
9360 | However, I don't think that the values returned by inferior | |
9361 | function calls are special in any way. So this function may not | |
9362 | notice that an expression involving an inferior function call | |
9363 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9364 | for (; v; v = value_next (v)) |
c906108c | 9365 | { |
5c44784c | 9366 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9367 | { |
8464be76 DJ |
9368 | if (v != head && value_lazy (v)) |
9369 | /* A lazy memory lvalue in the chain is one that GDB never | |
9370 | needed to fetch; we either just used its address (e.g., | |
9371 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9372 | in `a,b'). This doesn't apply to HEAD; if that is | |
9373 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9374 | ; |
53a5351d | 9375 | else |
5c44784c JM |
9376 | { |
9377 | /* Ahh, memory we actually used! Check if we can cover | |
9378 | it with hardware watchpoints. */ | |
df407dfe | 9379 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9380 | |
9381 | /* We only watch structs and arrays if user asked for it | |
9382 | explicitly, never if they just happen to appear in a | |
9383 | middle of some value chain. */ | |
9384 | if (v == head | |
9385 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9386 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9387 | { | |
42ae5230 | 9388 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9389 | int len; |
9390 | int num_regs; | |
9391 | ||
a9634178 | 9392 | len = (target_exact_watchpoints |
e09342b5 TJB |
9393 | && is_scalar_type_recursive (vtype))? |
9394 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9395 | |
e09342b5 TJB |
9396 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9397 | if (!num_regs) | |
2e70b7b9 MS |
9398 | return 0; |
9399 | else | |
e09342b5 | 9400 | found_memory_cnt += num_regs; |
2e70b7b9 | 9401 | } |
5c44784c | 9402 | } |
c5aa993b | 9403 | } |
5086187c AC |
9404 | else if (VALUE_LVAL (v) != not_lval |
9405 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9406 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9407 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9408 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9409 | } |
9410 | ||
9411 | /* The expression itself looks suitable for using a hardware | |
9412 | watchpoint, but give the target machine a chance to reject it. */ | |
9413 | return found_memory_cnt; | |
9414 | } | |
9415 | ||
8b93c638 | 9416 | void |
84f4c1fe | 9417 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9418 | { |
84f4c1fe | 9419 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9420 | } |
9421 | ||
9422 | /* A helper function that looks for an argument at the start of a | |
9423 | string. The argument must also either be at the end of the string, | |
9424 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9425 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9426 | ||
9427 | static int | |
9428 | check_for_argument (char **str, char *arg, int arg_len) | |
9429 | { | |
9430 | if (strncmp (*str, arg, arg_len) == 0 | |
9431 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9432 | { | |
9433 | *str += arg_len; | |
9434 | return 1; | |
9435 | } | |
9436 | return 0; | |
9437 | } | |
9438 | ||
9439 | /* A helper function that looks for the "-location" argument and then | |
9440 | calls watch_command_1. */ | |
9441 | ||
9442 | static void | |
9443 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9444 | { | |
9445 | int just_location = 0; | |
9446 | ||
9447 | if (arg | |
9448 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9449 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9450 | { | |
e9cafbcc | 9451 | arg = skip_spaces (arg); |
06a64a0b TT |
9452 | just_location = 1; |
9453 | } | |
9454 | ||
84f4c1fe | 9455 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9456 | } |
8926118c | 9457 | |
c5aa993b | 9458 | static void |
fba45db2 | 9459 | watch_command (char *arg, int from_tty) |
c906108c | 9460 | { |
06a64a0b | 9461 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9462 | } |
9463 | ||
8b93c638 | 9464 | void |
84f4c1fe | 9465 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9466 | { |
84f4c1fe | 9467 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9468 | } |
8926118c | 9469 | |
c5aa993b | 9470 | static void |
fba45db2 | 9471 | rwatch_command (char *arg, int from_tty) |
c906108c | 9472 | { |
06a64a0b | 9473 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9474 | } |
9475 | ||
8b93c638 | 9476 | void |
84f4c1fe | 9477 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9478 | { |
84f4c1fe | 9479 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9480 | } |
8926118c | 9481 | |
c5aa993b | 9482 | static void |
fba45db2 | 9483 | awatch_command (char *arg, int from_tty) |
c906108c | 9484 | { |
06a64a0b | 9485 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9486 | } |
c906108c | 9487 | \f |
c5aa993b | 9488 | |
43ff13b4 | 9489 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9490 | because it uses the mechanisms of breakpoints. */ |
9491 | ||
bfec99b2 PA |
9492 | struct until_break_command_continuation_args |
9493 | { | |
9494 | struct breakpoint *breakpoint; | |
9495 | struct breakpoint *breakpoint2; | |
186c406b | 9496 | int thread_num; |
bfec99b2 PA |
9497 | }; |
9498 | ||
43ff13b4 | 9499 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9500 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9501 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9502 | command. */ |
c2c6d25f | 9503 | static void |
fa4cd53f | 9504 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 9505 | { |
bfec99b2 PA |
9506 | struct until_break_command_continuation_args *a = arg; |
9507 | ||
9508 | delete_breakpoint (a->breakpoint); | |
9509 | if (a->breakpoint2) | |
9510 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9511 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9512 | } |
9513 | ||
c906108c | 9514 | void |
ae66c1fc | 9515 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9516 | { |
9517 | struct symtabs_and_lines sals; | |
9518 | struct symtab_and_line sal; | |
206415a3 | 9519 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9520 | struct breakpoint *breakpoint; |
f107f563 | 9521 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9522 | struct cleanup *old_chain; |
186c406b TT |
9523 | int thread; |
9524 | struct thread_info *tp; | |
c906108c SS |
9525 | |
9526 | clear_proceed_status (); | |
9527 | ||
9528 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9529 | this function. */ |
c5aa993b | 9530 | |
1bfeeb0f | 9531 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 9532 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 9533 | get_last_displayed_symtab (), |
f8eba3c6 | 9534 | get_last_displayed_line ()); |
c906108c | 9535 | else |
f8eba3c6 TT |
9536 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
9537 | (struct symtab *) NULL, 0); | |
c5aa993b | 9538 | |
c906108c | 9539 | if (sals.nelts != 1) |
8a3fe4f8 | 9540 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9541 | |
c906108c | 9542 | sal = sals.sals[0]; |
4a64f543 | 9543 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9544 | |
c906108c | 9545 | if (*arg) |
8a3fe4f8 | 9546 | error (_("Junk at end of arguments.")); |
c5aa993b | 9547 | |
c906108c | 9548 | resolve_sal_pc (&sal); |
c5aa993b | 9549 | |
ae66c1fc EZ |
9550 | if (anywhere) |
9551 | /* If the user told us to continue until a specified location, | |
9552 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9553 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9554 | null_frame_id, bp_until); | |
ae66c1fc | 9555 | else |
4a64f543 MS |
9556 | /* Otherwise, specify the selected frame, because we want to stop |
9557 | only at the very same frame. */ | |
a6d9a66e UW |
9558 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9559 | get_stack_frame_id (frame), | |
ae66c1fc | 9560 | bp_until); |
c5aa993b | 9561 | |
f107f563 | 9562 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9563 | |
186c406b TT |
9564 | tp = inferior_thread (); |
9565 | thread = tp->num; | |
9566 | ||
ae66c1fc EZ |
9567 | /* Keep within the current frame, or in frames called by the current |
9568 | one. */ | |
edb3359d DJ |
9569 | |
9570 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9571 | { |
edb3359d DJ |
9572 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9573 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9574 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9575 | sal, | |
edb3359d | 9576 | frame_unwind_caller_id (frame), |
f107f563 VP |
9577 | bp_until); |
9578 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9579 | |
9580 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9581 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9582 | } |
c5aa993b | 9583 | |
c906108c | 9584 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9585 | |
4a64f543 MS |
9586 | /* If we are running asynchronously, and proceed call above has |
9587 | actually managed to start the target, arrange for breakpoints to | |
9588 | be deleted when the target stops. Otherwise, we're already | |
9589 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9590 | |
8ea051c5 | 9591 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9592 | { |
bfec99b2 PA |
9593 | struct until_break_command_continuation_args *args; |
9594 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9595 | |
bfec99b2 PA |
9596 | args->breakpoint = breakpoint; |
9597 | args->breakpoint2 = breakpoint2; | |
186c406b | 9598 | args->thread_num = thread; |
f107f563 VP |
9599 | |
9600 | discard_cleanups (old_chain); | |
95e54da7 PA |
9601 | add_continuation (inferior_thread (), |
9602 | until_break_command_continuation, args, | |
604ead4a | 9603 | xfree); |
f107f563 VP |
9604 | } |
9605 | else | |
c5aa993b | 9606 | do_cleanups (old_chain); |
c906108c | 9607 | } |
ae66c1fc | 9608 | |
c906108c SS |
9609 | /* This function attempts to parse an optional "if <cond>" clause |
9610 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9611 | |
c906108c SS |
9612 | Else, it returns a pointer to the condition string. (It does not |
9613 | attempt to evaluate the string against a particular block.) And, | |
9614 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9615 | if clause in the arg string. */ |
53a5351d | 9616 | |
c906108c | 9617 | static char * |
fba45db2 | 9618 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9619 | { |
c5aa993b JM |
9620 | char *cond_string; |
9621 | ||
9622 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9623 | return NULL; |
c5aa993b | 9624 | |
4a64f543 | 9625 | /* Skip the "if" keyword. */ |
c906108c | 9626 | (*arg) += 2; |
c5aa993b | 9627 | |
c906108c | 9628 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9629 | condition string. */ |
e9cafbcc | 9630 | *arg = skip_spaces (*arg); |
c906108c | 9631 | cond_string = *arg; |
c5aa993b | 9632 | |
4a64f543 MS |
9633 | /* Assume that the condition occupies the remainder of the arg |
9634 | string. */ | |
c906108c | 9635 | (*arg) += strlen (cond_string); |
c5aa993b | 9636 | |
c906108c SS |
9637 | return cond_string; |
9638 | } | |
c5aa993b | 9639 | |
c906108c SS |
9640 | /* Commands to deal with catching events, such as signals, exceptions, |
9641 | process start/exit, etc. */ | |
c5aa993b JM |
9642 | |
9643 | typedef enum | |
9644 | { | |
44feb3ce TT |
9645 | catch_fork_temporary, catch_vfork_temporary, |
9646 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9647 | } |
9648 | catch_fork_kind; | |
9649 | ||
c906108c | 9650 | static void |
cc59ec59 MS |
9651 | catch_fork_command_1 (char *arg, int from_tty, |
9652 | struct cmd_list_element *command) | |
c906108c | 9653 | { |
a6d9a66e | 9654 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9655 | char *cond_string = NULL; |
44feb3ce TT |
9656 | catch_fork_kind fork_kind; |
9657 | int tempflag; | |
9658 | ||
9659 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9660 | tempflag = (fork_kind == catch_fork_temporary | |
9661 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9662 | |
44feb3ce TT |
9663 | if (!arg) |
9664 | arg = ""; | |
e9cafbcc | 9665 | arg = skip_spaces (arg); |
c5aa993b | 9666 | |
c906108c | 9667 | /* The allowed syntax is: |
c5aa993b JM |
9668 | catch [v]fork |
9669 | catch [v]fork if <cond> | |
9670 | ||
4a64f543 | 9671 | First, check if there's an if clause. */ |
c906108c | 9672 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9673 | |
c906108c | 9674 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9675 | error (_("Junk at end of arguments.")); |
c5aa993b | 9676 | |
c906108c | 9677 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9678 | and enable reporting of such events. */ |
c5aa993b JM |
9679 | switch (fork_kind) |
9680 | { | |
44feb3ce TT |
9681 | case catch_fork_temporary: |
9682 | case catch_fork_permanent: | |
a6d9a66e | 9683 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9684 | &catch_fork_breakpoint_ops); |
c906108c | 9685 | break; |
44feb3ce TT |
9686 | case catch_vfork_temporary: |
9687 | case catch_vfork_permanent: | |
a6d9a66e | 9688 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9689 | &catch_vfork_breakpoint_ops); |
c906108c | 9690 | break; |
c5aa993b | 9691 | default: |
8a3fe4f8 | 9692 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9693 | break; |
c5aa993b | 9694 | } |
c906108c SS |
9695 | } |
9696 | ||
9697 | static void | |
cc59ec59 MS |
9698 | catch_exec_command_1 (char *arg, int from_tty, |
9699 | struct cmd_list_element *command) | |
c906108c | 9700 | { |
b4d90040 | 9701 | struct exec_catchpoint *c; |
a6d9a66e | 9702 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9703 | int tempflag; |
c5aa993b | 9704 | char *cond_string = NULL; |
c906108c | 9705 | |
44feb3ce TT |
9706 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9707 | ||
9708 | if (!arg) | |
9709 | arg = ""; | |
e9cafbcc | 9710 | arg = skip_spaces (arg); |
c906108c SS |
9711 | |
9712 | /* The allowed syntax is: | |
c5aa993b JM |
9713 | catch exec |
9714 | catch exec if <cond> | |
c906108c | 9715 | |
4a64f543 | 9716 | First, check if there's an if clause. */ |
c906108c SS |
9717 | cond_string = ep_parse_optional_if_clause (&arg); |
9718 | ||
9719 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9720 | error (_("Junk at end of arguments.")); |
c906108c | 9721 | |
b4d90040 PA |
9722 | c = XNEW (struct exec_catchpoint); |
9723 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
9724 | &catch_exec_breakpoint_ops); | |
9725 | c->exec_pathname = NULL; | |
9726 | ||
3ea46bff | 9727 | install_breakpoint (0, &c->base, 1); |
c906108c | 9728 | } |
c5aa993b | 9729 | |
3086aeae | 9730 | static enum print_stop_action |
348d480f | 9731 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 9732 | { |
79a45e25 | 9733 | struct ui_out *uiout = current_uiout; |
348d480f | 9734 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 9735 | int bp_temp, bp_throw; |
3086aeae | 9736 | |
ade92717 | 9737 | annotate_catchpoint (b->number); |
3086aeae | 9738 | |
ade92717 AR |
9739 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9740 | if (b->loc->address != b->loc->requested_address) | |
9741 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9742 | b->loc->address, | |
9743 | b->number, 1); | |
df2b6d2d | 9744 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9745 | ui_out_text (uiout, |
9746 | bp_temp ? "Temporary catchpoint " | |
9747 | : "Catchpoint "); | |
9748 | if (!ui_out_is_mi_like_p (uiout)) | |
9749 | ui_out_field_int (uiout, "bkptno", b->number); | |
9750 | ui_out_text (uiout, | |
c0b37c48 AR |
9751 | bp_throw ? " (exception thrown), " |
9752 | : " (exception caught), "); | |
ade92717 AR |
9753 | if (ui_out_is_mi_like_p (uiout)) |
9754 | { | |
9755 | ui_out_field_string (uiout, "reason", | |
9756 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9757 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9758 | ui_out_field_int (uiout, "bkptno", b->number); | |
9759 | } | |
3086aeae DJ |
9760 | return PRINT_SRC_AND_LOC; |
9761 | } | |
9762 | ||
9763 | static void | |
cc59ec59 MS |
9764 | print_one_exception_catchpoint (struct breakpoint *b, |
9765 | struct bp_location **last_loc) | |
3086aeae | 9766 | { |
79a45b7d | 9767 | struct value_print_options opts; |
79a45e25 | 9768 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 9769 | |
79a45b7d TT |
9770 | get_user_print_options (&opts); |
9771 | if (opts.addressprint) | |
3086aeae DJ |
9772 | { |
9773 | annotate_field (4); | |
604133b5 AR |
9774 | if (b->loc == NULL || b->loc->shlib_disabled) |
9775 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9776 | else | |
5af949e3 UW |
9777 | ui_out_field_core_addr (uiout, "addr", |
9778 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9779 | } |
9780 | annotate_field (5); | |
604133b5 | 9781 | if (b->loc) |
a6d9a66e | 9782 | *last_loc = b->loc; |
3086aeae DJ |
9783 | if (strstr (b->addr_string, "throw") != NULL) |
9784 | ui_out_field_string (uiout, "what", "exception throw"); | |
9785 | else | |
9786 | ui_out_field_string (uiout, "what", "exception catch"); | |
9787 | } | |
9788 | ||
9789 | static void | |
9790 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9791 | { | |
79a45e25 | 9792 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
9793 | int bp_temp; |
9794 | int bp_throw; | |
9795 | ||
df2b6d2d | 9796 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9797 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9798 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9799 | : _("Catchpoint ")); | |
9800 | ui_out_field_int (uiout, "bkptno", b->number); | |
9801 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9802 | : _(" (catch)")); | |
3086aeae DJ |
9803 | } |
9804 | ||
6149aea9 PA |
9805 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9806 | catch catchpoints. */ | |
9807 | ||
9808 | static void | |
4a64f543 MS |
9809 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9810 | struct ui_file *fp) | |
6149aea9 PA |
9811 | { |
9812 | int bp_temp; | |
9813 | int bp_throw; | |
9814 | ||
9815 | bp_temp = b->disposition == disp_del; | |
9816 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9817 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9818 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 9819 | print_recreate_thread (b, fp); |
6149aea9 PA |
9820 | } |
9821 | ||
2060206e | 9822 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
9823 | |
9824 | static int | |
9825 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9826 | enum exception_event_kind ex_event, int from_tty) | |
9827 | { | |
604133b5 AR |
9828 | char *trigger_func_name; |
9829 | ||
3086aeae | 9830 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9831 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9832 | else |
604133b5 | 9833 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9834 | |
8cdf0e15 VP |
9835 | create_breakpoint (get_current_arch (), |
9836 | trigger_func_name, cond_string, -1, | |
9837 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9838 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9839 | 0, |
9840 | AUTO_BOOLEAN_TRUE /* pending */, | |
9841 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9842 | 1 /* enabled */, |
9843 | 0 /* internal */); | |
3086aeae | 9844 | |
3086aeae DJ |
9845 | return 1; |
9846 | } | |
9847 | ||
4a64f543 | 9848 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9849 | |
9850 | static void | |
fba45db2 KB |
9851 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9852 | int tempflag, int from_tty) | |
c906108c | 9853 | { |
c5aa993b | 9854 | char *cond_string = NULL; |
c5aa993b | 9855 | |
44feb3ce TT |
9856 | if (!arg) |
9857 | arg = ""; | |
e9cafbcc | 9858 | arg = skip_spaces (arg); |
c5aa993b | 9859 | |
c906108c SS |
9860 | cond_string = ep_parse_optional_if_clause (&arg); |
9861 | ||
9862 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9863 | error (_("Junk at end of arguments.")); |
c906108c | 9864 | |
059fb39f PM |
9865 | if (ex_event != EX_EVENT_THROW |
9866 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9867 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9868 | |
3086aeae DJ |
9869 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9870 | return; | |
9871 | ||
8a3fe4f8 | 9872 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9873 | } |
9874 | ||
44feb3ce TT |
9875 | /* Implementation of "catch catch" command. */ |
9876 | ||
9877 | static void | |
9878 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9879 | { | |
9880 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9881 | |
44feb3ce TT |
9882 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9883 | } | |
9884 | ||
9885 | /* Implementation of "catch throw" command. */ | |
9886 | ||
9887 | static void | |
9888 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9889 | { | |
9890 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9891 | |
44feb3ce TT |
9892 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9893 | } | |
9894 | ||
9ac4176b | 9895 | void |
28010a5d PA |
9896 | init_ada_exception_breakpoint (struct breakpoint *b, |
9897 | struct gdbarch *gdbarch, | |
9898 | struct symtab_and_line sal, | |
9899 | char *addr_string, | |
c0a91b2b | 9900 | const struct breakpoint_ops *ops, |
28010a5d PA |
9901 | int tempflag, |
9902 | int from_tty) | |
f7f9143b | 9903 | { |
f7f9143b JB |
9904 | if (from_tty) |
9905 | { | |
5af949e3 UW |
9906 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9907 | if (!loc_gdbarch) | |
9908 | loc_gdbarch = gdbarch; | |
9909 | ||
6c95b8df PA |
9910 | describe_other_breakpoints (loc_gdbarch, |
9911 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9912 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9913 | version for exception catchpoints, because two catchpoints | |
9914 | used for different exception names will use the same address. | |
9915 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9916 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 9917 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
9918 | the user what type of catchpoint it is. The above is good |
9919 | enough for now, though. */ | |
9920 | } | |
9921 | ||
28010a5d | 9922 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
9923 | |
9924 | b->enable_state = bp_enabled; | |
9925 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
9926 | b->addr_string = addr_string; |
9927 | b->language = language_ada; | |
f7f9143b JB |
9928 | } |
9929 | ||
a96d9b2e SDJ |
9930 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
9931 | filter list, or NULL if no filtering is required. */ | |
9932 | static VEC(int) * | |
9933 | catch_syscall_split_args (char *arg) | |
9934 | { | |
9935 | VEC(int) *result = NULL; | |
29d0bb3d | 9936 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
9937 | |
9938 | while (*arg != '\0') | |
9939 | { | |
9940 | int i, syscall_number; | |
9941 | char *endptr; | |
9942 | char cur_name[128]; | |
9943 | struct syscall s; | |
9944 | ||
9945 | /* Skip whitespace. */ | |
9946 | while (isspace (*arg)) | |
9947 | arg++; | |
9948 | ||
9949 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9950 | cur_name[i] = arg[i]; | |
9951 | cur_name[i] = '\0'; | |
9952 | arg += i; | |
9953 | ||
9954 | /* Check if the user provided a syscall name or a number. */ | |
9955 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9956 | if (*endptr == '\0') | |
bccd0dd2 | 9957 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9958 | else |
9959 | { | |
9960 | /* We have a name. Let's check if it's valid and convert it | |
9961 | to a number. */ | |
9962 | get_syscall_by_name (cur_name, &s); | |
9963 | ||
9964 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9965 | /* Here we have to issue an error instead of a warning, |
9966 | because GDB cannot do anything useful if there's no | |
9967 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9968 | error (_("Unknown syscall name '%s'."), cur_name); |
9969 | } | |
9970 | ||
9971 | /* Ok, it's valid. */ | |
9972 | VEC_safe_push (int, result, s.number); | |
9973 | } | |
9974 | ||
9975 | discard_cleanups (cleanup); | |
9976 | return result; | |
9977 | } | |
9978 | ||
9979 | /* Implement the "catch syscall" command. */ | |
9980 | ||
9981 | static void | |
cc59ec59 MS |
9982 | catch_syscall_command_1 (char *arg, int from_tty, |
9983 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9984 | { |
9985 | int tempflag; | |
9986 | VEC(int) *filter; | |
9987 | struct syscall s; | |
9988 | struct gdbarch *gdbarch = get_current_arch (); | |
9989 | ||
9990 | /* Checking if the feature if supported. */ | |
9991 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9992 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9993 | this architecture yet.")); |
a96d9b2e SDJ |
9994 | |
9995 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9996 | ||
e9cafbcc | 9997 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9998 | |
9999 | /* We need to do this first "dummy" translation in order | |
10000 | to get the syscall XML file loaded or, most important, | |
10001 | to display a warning to the user if there's no XML file | |
10002 | for his/her architecture. */ | |
10003 | get_syscall_by_number (0, &s); | |
10004 | ||
10005 | /* The allowed syntax is: | |
10006 | catch syscall | |
10007 | catch syscall <name | number> [<name | number> ... <name | number>] | |
10008 | ||
10009 | Let's check if there's a syscall name. */ | |
10010 | ||
10011 | if (arg != NULL) | |
10012 | filter = catch_syscall_split_args (arg); | |
10013 | else | |
10014 | filter = NULL; | |
10015 | ||
10016 | create_syscall_event_catchpoint (tempflag, filter, | |
10017 | &catch_syscall_breakpoint_ops); | |
10018 | } | |
10019 | ||
c906108c | 10020 | static void |
fba45db2 | 10021 | catch_command (char *arg, int from_tty) |
c906108c | 10022 | { |
44feb3ce | 10023 | error (_("Catch requires an event name.")); |
c906108c SS |
10024 | } |
10025 | \f | |
10026 | ||
10027 | static void | |
fba45db2 | 10028 | tcatch_command (char *arg, int from_tty) |
c906108c | 10029 | { |
44feb3ce | 10030 | error (_("Catch requires an event name.")); |
c906108c SS |
10031 | } |
10032 | ||
8a2c437b TT |
10033 | /* A qsort comparison function that sorts breakpoints in order. */ |
10034 | ||
10035 | static int | |
10036 | compare_breakpoints (const void *a, const void *b) | |
10037 | { | |
10038 | const breakpoint_p *ba = a; | |
10039 | uintptr_t ua = (uintptr_t) *ba; | |
10040 | const breakpoint_p *bb = b; | |
10041 | uintptr_t ub = (uintptr_t) *bb; | |
10042 | ||
10043 | if ((*ba)->number < (*bb)->number) | |
10044 | return -1; | |
10045 | else if ((*ba)->number > (*bb)->number) | |
10046 | return 1; | |
10047 | ||
10048 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10049 | the number 0. */ | |
10050 | if (ua < ub) | |
10051 | return -1; | |
10052 | return ub > ub ? 1 : 0; | |
10053 | } | |
10054 | ||
80f8a6eb | 10055 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10056 | |
10057 | static void | |
fba45db2 | 10058 | clear_command (char *arg, int from_tty) |
c906108c | 10059 | { |
8a2c437b | 10060 | struct breakpoint *b, *prev; |
d6e956e5 VP |
10061 | VEC(breakpoint_p) *found = 0; |
10062 | int ix; | |
c906108c SS |
10063 | int default_match; |
10064 | struct symtabs_and_lines sals; | |
10065 | struct symtab_and_line sal; | |
c906108c | 10066 | int i; |
8a2c437b | 10067 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
10068 | |
10069 | if (arg) | |
10070 | { | |
f8eba3c6 TT |
10071 | sals = decode_line_spec (arg, (DECODE_LINE_FUNFIRSTLINE |
10072 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
10073 | default_match = 0; |
10074 | } | |
10075 | else | |
10076 | { | |
c5aa993b | 10077 | sals.sals = (struct symtab_and_line *) |
c906108c | 10078 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 10079 | make_cleanup (xfree, sals.sals); |
4a64f543 | 10080 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
10081 | |
10082 | /* Set sal's line, symtab, pc, and pspace to the values | |
10083 | corresponding to the last call to print_frame_info. If the | |
10084 | codepoint is not valid, this will set all the fields to 0. */ | |
10085 | get_last_displayed_sal (&sal); | |
c906108c | 10086 | if (sal.symtab == 0) |
8a3fe4f8 | 10087 | error (_("No source file specified.")); |
c906108c SS |
10088 | |
10089 | sals.sals[0] = sal; | |
10090 | sals.nelts = 1; | |
10091 | ||
10092 | default_match = 1; | |
10093 | } | |
10094 | ||
4a64f543 MS |
10095 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10096 | seems, because all existing breakpoints typically have both | |
10097 | file/line and pc set. So, if clear is given file/line, we can | |
10098 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10099 | |
10100 | We only support clearing given the address explicitly | |
10101 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10102 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10103 | due to optimization, all in one block. |
4a64f543 MS |
10104 | |
10105 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10106 | PC corresponding to the same file:line, the breakpoint won't |
10107 | be cleared. We probably can still clear the breakpoint, but | |
10108 | since the other PC value is never presented to user, user | |
10109 | can only find it by guessing, and it does not seem important | |
10110 | to support that. */ | |
10111 | ||
4a64f543 MS |
10112 | /* For each line spec given, delete bps which correspond to it. Do |
10113 | it in two passes, solely to preserve the current behavior that | |
10114 | from_tty is forced true if we delete more than one | |
10115 | breakpoint. */ | |
c906108c | 10116 | |
80f8a6eb | 10117 | found = NULL; |
8a2c437b | 10118 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
10119 | for (i = 0; i < sals.nelts; i++) |
10120 | { | |
10121 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
10122 | If line given (pc == 0), clear all bpts on specified line. |
10123 | If defaulting, clear all bpts on default line | |
c906108c | 10124 | or at default pc. |
c5aa993b JM |
10125 | |
10126 | defaulting sal.pc != 0 tests to do | |
10127 | ||
10128 | 0 1 pc | |
10129 | 1 1 pc _and_ line | |
10130 | 0 0 line | |
10131 | 1 0 <can't happen> */ | |
c906108c SS |
10132 | |
10133 | sal = sals.sals[i]; | |
c906108c | 10134 | |
4a64f543 | 10135 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 10136 | ALL_BREAKPOINTS (b) |
c5aa993b | 10137 | { |
0d381245 | 10138 | int match = 0; |
4a64f543 | 10139 | /* Are we going to delete b? */ |
cc60f2e3 | 10140 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
10141 | { |
10142 | struct bp_location *loc = b->loc; | |
10143 | for (; loc; loc = loc->next) | |
10144 | { | |
f8eba3c6 TT |
10145 | /* If the user specified file:line, don't allow a PC |
10146 | match. This matches historical gdb behavior. */ | |
10147 | int pc_match = (!sal.explicit_line | |
10148 | && sal.pc | |
10149 | && (loc->pspace == sal.pspace) | |
10150 | && (loc->address == sal.pc) | |
10151 | && (!section_is_overlay (loc->section) | |
10152 | || loc->section == sal.section)); | |
10153 | int line_match = ((default_match || sal.explicit_line) | |
10154 | && loc->source_file != NULL | |
0d381245 | 10155 | && sal.symtab != NULL |
6c95b8df | 10156 | && sal.pspace == loc->pspace |
f8eba3c6 | 10157 | && filename_cmp (loc->source_file, |
0ba1096a | 10158 | sal.symtab->filename) == 0 |
f8eba3c6 | 10159 | && loc->line_number == sal.line); |
0d381245 VP |
10160 | if (pc_match || line_match) |
10161 | { | |
10162 | match = 1; | |
10163 | break; | |
10164 | } | |
10165 | } | |
10166 | } | |
10167 | ||
10168 | if (match) | |
d6e956e5 | 10169 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 10170 | } |
80f8a6eb | 10171 | } |
8a2c437b | 10172 | |
80f8a6eb | 10173 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 10174 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
10175 | { |
10176 | if (arg) | |
8a3fe4f8 | 10177 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10178 | else |
8a3fe4f8 | 10179 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10180 | } |
c906108c | 10181 | |
8a2c437b TT |
10182 | /* Remove duplicates from the vec. */ |
10183 | qsort (VEC_address (breakpoint_p, found), | |
10184 | VEC_length (breakpoint_p, found), | |
10185 | sizeof (breakpoint_p), | |
10186 | compare_breakpoints); | |
10187 | prev = VEC_index (breakpoint_p, found, 0); | |
10188 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
10189 | { | |
10190 | if (b == prev) | |
10191 | { | |
10192 | VEC_ordered_remove (breakpoint_p, found, ix); | |
10193 | --ix; | |
10194 | } | |
10195 | } | |
10196 | ||
d6e956e5 | 10197 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 10198 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10199 | if (from_tty) |
a3f17187 | 10200 | { |
d6e956e5 | 10201 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
10202 | printf_unfiltered (_("Deleted breakpoint ")); |
10203 | else | |
10204 | printf_unfiltered (_("Deleted breakpoints ")); | |
10205 | } | |
80f8a6eb | 10206 | breakpoints_changed (); |
d6e956e5 VP |
10207 | |
10208 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 10209 | { |
c5aa993b | 10210 | if (from_tty) |
d6e956e5 VP |
10211 | printf_unfiltered ("%d ", b->number); |
10212 | delete_breakpoint (b); | |
c906108c | 10213 | } |
80f8a6eb MS |
10214 | if (from_tty) |
10215 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
10216 | |
10217 | do_cleanups (cleanups); | |
c906108c SS |
10218 | } |
10219 | \f | |
10220 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10221 | all breakpoints that are marked for deletion, whether hit or not. | |
10222 | This is called after any breakpoint is hit, or after errors. */ | |
10223 | ||
10224 | void | |
fba45db2 | 10225 | breakpoint_auto_delete (bpstat bs) |
c906108c | 10226 | { |
35df4500 | 10227 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10228 | |
10229 | for (; bs; bs = bs->next) | |
f431efe5 PA |
10230 | if (bs->breakpoint_at |
10231 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10232 | && bs->stop) |
f431efe5 | 10233 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10234 | |
35df4500 | 10235 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10236 | { |
b5de0fa7 | 10237 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
10238 | delete_breakpoint (b); |
10239 | } | |
c906108c SS |
10240 | } |
10241 | ||
4a64f543 MS |
10242 | /* A comparison function for bp_location AP and BP being interfaced to |
10243 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
10244 | does breakpoint_address_is_meaningful say for its OWNER), | |
10245 | secondarily by ordering first bp_permanent OWNERed elements and | |
10246 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 10247 | qsort being an unstable algorithm. */ |
876fa593 JK |
10248 | |
10249 | static int | |
494cfb0f | 10250 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10251 | { |
494cfb0f JK |
10252 | struct bp_location *a = *(void **) ap; |
10253 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10254 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10255 | int a_perm = a->owner->enable_state == bp_permanent; |
10256 | int b_perm = b->owner->enable_state == bp_permanent; | |
10257 | ||
10258 | if (a->address != b->address) | |
10259 | return (a->address > b->address) - (a->address < b->address); | |
10260 | ||
10261 | /* Sort permanent breakpoints first. */ | |
10262 | if (a_perm != b_perm) | |
10263 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10264 | ||
4a64f543 MS |
10265 | /* Make the user-visible order stable across GDB runs. Locations of |
10266 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10267 | |
10268 | if (a->owner->number != b->owner->number) | |
10269 | return (a->owner->number > b->owner->number) | |
10270 | - (a->owner->number < b->owner->number); | |
10271 | ||
10272 | return (a > b) - (a < b); | |
10273 | } | |
10274 | ||
876fa593 | 10275 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10276 | bp_location_shadow_len_after_address_max according to the current |
10277 | content of the bp_location array. */ | |
f7545552 TT |
10278 | |
10279 | static void | |
876fa593 | 10280 | bp_location_target_extensions_update (void) |
f7545552 | 10281 | { |
876fa593 JK |
10282 | struct bp_location *bl, **blp_tmp; |
10283 | ||
10284 | bp_location_placed_address_before_address_max = 0; | |
10285 | bp_location_shadow_len_after_address_max = 0; | |
10286 | ||
10287 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10288 | { | |
10289 | CORE_ADDR start, end, addr; | |
10290 | ||
10291 | if (!bp_location_has_shadow (bl)) | |
10292 | continue; | |
10293 | ||
10294 | start = bl->target_info.placed_address; | |
10295 | end = start + bl->target_info.shadow_len; | |
10296 | ||
10297 | gdb_assert (bl->address >= start); | |
10298 | addr = bl->address - start; | |
10299 | if (addr > bp_location_placed_address_before_address_max) | |
10300 | bp_location_placed_address_before_address_max = addr; | |
10301 | ||
10302 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10303 | ||
10304 | gdb_assert (bl->address < end); | |
10305 | addr = end - bl->address; | |
10306 | if (addr > bp_location_shadow_len_after_address_max) | |
10307 | bp_location_shadow_len_after_address_max = addr; | |
10308 | } | |
f7545552 TT |
10309 | } |
10310 | ||
1e4d1764 YQ |
10311 | /* Download tracepoint locations if they haven't been. */ |
10312 | ||
10313 | static void | |
10314 | download_tracepoint_locations (void) | |
10315 | { | |
10316 | struct bp_location *bl, **blp_tmp; | |
10317 | struct cleanup *old_chain; | |
10318 | ||
10319 | if (!target_can_download_tracepoint ()) | |
10320 | return; | |
10321 | ||
10322 | old_chain = save_current_space_and_thread (); | |
10323 | ||
10324 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10325 | { | |
10326 | struct tracepoint *t; | |
10327 | ||
10328 | if (!is_tracepoint (bl->owner)) | |
10329 | continue; | |
10330 | ||
10331 | if ((bl->owner->type == bp_fast_tracepoint | |
10332 | ? !may_insert_fast_tracepoints | |
10333 | : !may_insert_tracepoints)) | |
10334 | continue; | |
10335 | ||
10336 | /* In tracepoint, locations are _never_ duplicated, so | |
10337 | should_be_inserted is equivalent to | |
10338 | unduplicated_should_be_inserted. */ | |
10339 | if (!should_be_inserted (bl) || bl->inserted) | |
10340 | continue; | |
10341 | ||
10342 | switch_to_program_space_and_thread (bl->pspace); | |
10343 | ||
10344 | target_download_tracepoint (bl); | |
10345 | ||
10346 | bl->inserted = 1; | |
10347 | t = (struct tracepoint *) bl->owner; | |
10348 | t->number_on_target = bl->owner->number; | |
10349 | } | |
10350 | ||
10351 | do_cleanups (old_chain); | |
10352 | } | |
10353 | ||
934709f0 PW |
10354 | /* Swap the insertion/duplication state between two locations. */ |
10355 | ||
10356 | static void | |
10357 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10358 | { | |
10359 | const int left_inserted = left->inserted; | |
10360 | const int left_duplicate = left->duplicate; | |
10361 | const struct bp_target_info left_target_info = left->target_info; | |
10362 | ||
1e4d1764 YQ |
10363 | /* Locations of tracepoints can never be duplicated. */ |
10364 | if (is_tracepoint (left->owner)) | |
10365 | gdb_assert (!left->duplicate); | |
10366 | if (is_tracepoint (right->owner)) | |
10367 | gdb_assert (!right->duplicate); | |
10368 | ||
934709f0 PW |
10369 | left->inserted = right->inserted; |
10370 | left->duplicate = right->duplicate; | |
10371 | left->target_info = right->target_info; | |
10372 | right->inserted = left_inserted; | |
10373 | right->duplicate = left_duplicate; | |
10374 | right->target_info = left_target_info; | |
10375 | } | |
10376 | ||
4cd9bd08 | 10377 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10378 | into the inferior, only remove already-inserted locations that no |
10379 | longer should be inserted. Functions that delete a breakpoint or | |
10380 | breakpoints should pass false, so that deleting a breakpoint | |
10381 | doesn't have the side effect of inserting the locations of other | |
10382 | breakpoints that are marked not-inserted, but should_be_inserted | |
10383 | returns true on them. | |
10384 | ||
10385 | This behaviour is useful is situations close to tear-down -- e.g., | |
10386 | after an exec, while the target still has execution, but breakpoint | |
10387 | shadows of the previous executable image should *NOT* be restored | |
10388 | to the new image; or before detaching, where the target still has | |
10389 | execution and wants to delete breakpoints from GDB's lists, and all | |
10390 | breakpoints had already been removed from the inferior. */ | |
10391 | ||
0d381245 | 10392 | static void |
b60e7edf | 10393 | update_global_location_list (int should_insert) |
0d381245 | 10394 | { |
74960c60 | 10395 | struct breakpoint *b; |
876fa593 | 10396 | struct bp_location **locp, *loc; |
f7545552 TT |
10397 | struct cleanup *cleanups; |
10398 | ||
2d134ed3 PA |
10399 | /* Used in the duplicates detection below. When iterating over all |
10400 | bp_locations, points to the first bp_location of a given address. | |
10401 | Breakpoints and watchpoints of different types are never | |
10402 | duplicates of each other. Keep one pointer for each type of | |
10403 | breakpoint/watchpoint, so we only need to loop over all locations | |
10404 | once. */ | |
10405 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10406 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10407 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10408 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10409 | |
4a64f543 MS |
10410 | /* Saved former bp_location array which we compare against the newly |
10411 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10412 | struct bp_location **old_location, **old_locp; |
10413 | unsigned old_location_count; | |
10414 | ||
10415 | old_location = bp_location; | |
10416 | old_location_count = bp_location_count; | |
10417 | bp_location = NULL; | |
10418 | bp_location_count = 0; | |
10419 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10420 | |
74960c60 | 10421 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10422 | for (loc = b->loc; loc; loc = loc->next) |
10423 | bp_location_count++; | |
10424 | ||
10425 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10426 | locp = bp_location; | |
10427 | ALL_BREAKPOINTS (b) | |
10428 | for (loc = b->loc; loc; loc = loc->next) | |
10429 | *locp++ = loc; | |
10430 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10431 | bp_location_compare); |
876fa593 JK |
10432 | |
10433 | bp_location_target_extensions_update (); | |
74960c60 | 10434 | |
4a64f543 MS |
10435 | /* Identify bp_location instances that are no longer present in the |
10436 | new list, and therefore should be freed. Note that it's not | |
10437 | necessary that those locations should be removed from inferior -- | |
10438 | if there's another location at the same address (previously | |
10439 | marked as duplicate), we don't need to remove/insert the | |
10440 | location. | |
876fa593 | 10441 | |
4a64f543 MS |
10442 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10443 | and former bp_location array state respectively. */ | |
876fa593 JK |
10444 | |
10445 | locp = bp_location; | |
10446 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10447 | old_locp++) | |
74960c60 | 10448 | { |
876fa593 | 10449 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10450 | struct bp_location **loc2p; |
876fa593 | 10451 | |
e5dd4106 | 10452 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 10453 | not, we have to free it. */ |
c7d46a38 | 10454 | int found_object = 0; |
20874c92 VP |
10455 | /* Tells if the location should remain inserted in the target. */ |
10456 | int keep_in_target = 0; | |
10457 | int removed = 0; | |
876fa593 | 10458 | |
4a64f543 MS |
10459 | /* Skip LOCP entries which will definitely never be needed. |
10460 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10461 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10462 | && (*locp)->address < old_loc->address) |
876fa593 | 10463 | locp++; |
c7d46a38 PA |
10464 | |
10465 | for (loc2p = locp; | |
10466 | (loc2p < bp_location + bp_location_count | |
10467 | && (*loc2p)->address == old_loc->address); | |
10468 | loc2p++) | |
10469 | { | |
10470 | if (*loc2p == old_loc) | |
10471 | { | |
10472 | found_object = 1; | |
10473 | break; | |
10474 | } | |
10475 | } | |
74960c60 | 10476 | |
4a64f543 MS |
10477 | /* If this location is no longer present, and inserted, look if |
10478 | there's maybe a new location at the same address. If so, | |
10479 | mark that one inserted, and don't remove this one. This is | |
10480 | needed so that we don't have a time window where a breakpoint | |
10481 | at certain location is not inserted. */ | |
74960c60 | 10482 | |
876fa593 | 10483 | if (old_loc->inserted) |
0d381245 | 10484 | { |
4a64f543 MS |
10485 | /* If the location is inserted now, we might have to remove |
10486 | it. */ | |
74960c60 | 10487 | |
876fa593 | 10488 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10489 | { |
4a64f543 MS |
10490 | /* The location is still present in the location list, |
10491 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10492 | keep_in_target = 1; |
74960c60 VP |
10493 | } |
10494 | else | |
10495 | { | |
4a64f543 MS |
10496 | /* The location is either no longer present, or got |
10497 | disabled. See if there's another location at the | |
10498 | same address, in which case we don't need to remove | |
10499 | this one from the target. */ | |
876fa593 | 10500 | |
2bdf28a0 | 10501 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10502 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10503 | { | |
876fa593 | 10504 | for (loc2p = locp; |
c7d46a38 PA |
10505 | (loc2p < bp_location + bp_location_count |
10506 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10507 | loc2p++) |
10508 | { | |
10509 | struct bp_location *loc2 = *loc2p; | |
10510 | ||
2d134ed3 | 10511 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 10512 | { |
85d721b8 PA |
10513 | /* Read watchpoint locations are switched to |
10514 | access watchpoints, if the former are not | |
10515 | supported, but the latter are. */ | |
10516 | if (is_hardware_watchpoint (old_loc->owner)) | |
10517 | { | |
10518 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10519 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10520 | } | |
10521 | ||
934709f0 PW |
10522 | /* loc2 is a duplicated location. We need to check |
10523 | if it should be inserted in case it will be | |
10524 | unduplicated. */ | |
10525 | if (loc2 != old_loc | |
10526 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 10527 | { |
934709f0 | 10528 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
10529 | keep_in_target = 1; |
10530 | break; | |
10531 | } | |
876fa593 JK |
10532 | } |
10533 | } | |
10534 | } | |
74960c60 VP |
10535 | } |
10536 | ||
20874c92 VP |
10537 | if (!keep_in_target) |
10538 | { | |
876fa593 | 10539 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10540 | { |
4a64f543 MS |
10541 | /* This is just about all we can do. We could keep |
10542 | this location on the global list, and try to | |
10543 | remove it next time, but there's no particular | |
10544 | reason why we will succeed next time. | |
20874c92 | 10545 | |
4a64f543 MS |
10546 | Note that at this point, old_loc->owner is still |
10547 | valid, as delete_breakpoint frees the breakpoint | |
10548 | only after calling us. */ | |
3e43a32a MS |
10549 | printf_filtered (_("warning: Error removing " |
10550 | "breakpoint %d\n"), | |
876fa593 | 10551 | old_loc->owner->number); |
20874c92 VP |
10552 | } |
10553 | removed = 1; | |
10554 | } | |
0d381245 | 10555 | } |
74960c60 VP |
10556 | |
10557 | if (!found_object) | |
1c5cfe86 | 10558 | { |
db82e815 PA |
10559 | if (removed && non_stop |
10560 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10561 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10562 | { |
db82e815 PA |
10563 | /* This location was removed from the target. In |
10564 | non-stop mode, a race condition is possible where | |
10565 | we've removed a breakpoint, but stop events for that | |
10566 | breakpoint are already queued and will arrive later. | |
10567 | We apply an heuristic to be able to distinguish such | |
10568 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10569 | breakpoint location for a bit, and will retire it | |
10570 | after we see some number of events. The theory here | |
10571 | is that reporting of events should, "on the average", | |
10572 | be fair, so after a while we'll see events from all | |
10573 | threads that have anything of interest, and no longer | |
10574 | need to keep this breakpoint location around. We | |
10575 | don't hold locations forever so to reduce chances of | |
10576 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10577 | SIGTRAP. | |
10578 | ||
10579 | The heuristic failing can be disastrous on | |
10580 | decr_pc_after_break targets. | |
10581 | ||
10582 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10583 | if we fail to recognize a late breakpoint SIGTRAP, | |
10584 | because events_till_retirement has reached 0 too | |
10585 | soon, we'll fail to do the PC adjustment, and report | |
10586 | a random SIGTRAP to the user. When the user resumes | |
10587 | the inferior, it will most likely immediately crash | |
2dec564e | 10588 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10589 | corrupted, because of being resumed e.g., in the |
10590 | middle of a multi-byte instruction, or skipped a | |
10591 | one-byte instruction. This was actually seen happen | |
10592 | on native x86-linux, and should be less rare on | |
10593 | targets that do not support new thread events, like | |
10594 | remote, due to the heuristic depending on | |
10595 | thread_count. | |
10596 | ||
10597 | Mistaking a random SIGTRAP for a breakpoint trap | |
10598 | causes similar symptoms (PC adjustment applied when | |
10599 | it shouldn't), but then again, playing with SIGTRAPs | |
10600 | behind the debugger's back is asking for trouble. | |
10601 | ||
10602 | Since hardware watchpoint traps are always | |
10603 | distinguishable from other traps, so we don't need to | |
10604 | apply keep hardware watchpoint moribund locations | |
10605 | around. We simply always ignore hardware watchpoint | |
10606 | traps we can no longer explain. */ | |
10607 | ||
876fa593 JK |
10608 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10609 | old_loc->owner = NULL; | |
20874c92 | 10610 | |
876fa593 | 10611 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10612 | } |
10613 | else | |
f431efe5 PA |
10614 | { |
10615 | old_loc->owner = NULL; | |
10616 | decref_bp_location (&old_loc); | |
10617 | } | |
20874c92 | 10618 | } |
74960c60 | 10619 | } |
1c5cfe86 | 10620 | |
348d480f PA |
10621 | /* Rescan breakpoints at the same address and section, marking the |
10622 | first one as "first" and any others as "duplicates". This is so | |
10623 | that the bpt instruction is only inserted once. If we have a | |
10624 | permanent breakpoint at the same place as BPT, make that one the | |
10625 | official one, and the rest as duplicates. Permanent breakpoints | |
10626 | are sorted first for the same address. | |
10627 | ||
10628 | Do the same for hardware watchpoints, but also considering the | |
10629 | watchpoint's type (regular/access/read) and length. */ | |
10630 | ||
10631 | bp_loc_first = NULL; | |
10632 | wp_loc_first = NULL; | |
10633 | awp_loc_first = NULL; | |
10634 | rwp_loc_first = NULL; | |
10635 | ALL_BP_LOCATIONS (loc, locp) | |
10636 | { | |
10637 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
10638 | non-NULL. */ | |
348d480f | 10639 | struct bp_location **loc_first_p; |
d3fbdd86 | 10640 | b = loc->owner; |
348d480f | 10641 | |
f8eba3c6 | 10642 | if (!should_be_inserted (loc) |
348d480f | 10643 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
10644 | /* Don't detect duplicate for tracepoint locations because they are |
10645 | never duplicated. See the comments in field `duplicate' of | |
10646 | `struct bp_location'. */ | |
348d480f PA |
10647 | || is_tracepoint (b)) |
10648 | continue; | |
10649 | ||
10650 | /* Permanent breakpoint should always be inserted. */ | |
10651 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10652 | internal_error (__FILE__, __LINE__, | |
10653 | _("allegedly permanent breakpoint is not " | |
10654 | "actually inserted")); | |
10655 | ||
10656 | if (b->type == bp_hardware_watchpoint) | |
10657 | loc_first_p = &wp_loc_first; | |
10658 | else if (b->type == bp_read_watchpoint) | |
10659 | loc_first_p = &rwp_loc_first; | |
10660 | else if (b->type == bp_access_watchpoint) | |
10661 | loc_first_p = &awp_loc_first; | |
10662 | else | |
10663 | loc_first_p = &bp_loc_first; | |
10664 | ||
10665 | if (*loc_first_p == NULL | |
10666 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10667 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
10668 | { | |
10669 | *loc_first_p = loc; | |
10670 | loc->duplicate = 0; | |
10671 | continue; | |
10672 | } | |
10673 | ||
934709f0 PW |
10674 | |
10675 | /* This and the above ensure the invariant that the first location | |
10676 | is not duplicated, and is the inserted one. | |
10677 | All following are marked as duplicated, and are not inserted. */ | |
10678 | if (loc->inserted) | |
10679 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
10680 | loc->duplicate = 1; |
10681 | ||
10682 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted | |
10683 | && b->enable_state != bp_permanent) | |
10684 | internal_error (__FILE__, __LINE__, | |
10685 | _("another breakpoint was inserted on top of " | |
10686 | "a permanent breakpoint")); | |
10687 | } | |
10688 | ||
10689 | if (breakpoints_always_inserted_mode () && should_insert | |
10690 | && (have_live_inferiors () | |
10691 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
10692 | insert_breakpoint_locations (); | |
10693 | ||
1e4d1764 YQ |
10694 | if (should_insert) |
10695 | download_tracepoint_locations (); | |
10696 | ||
348d480f PA |
10697 | do_cleanups (cleanups); |
10698 | } | |
10699 | ||
10700 | void | |
10701 | breakpoint_retire_moribund (void) | |
10702 | { | |
10703 | struct bp_location *loc; | |
10704 | int ix; | |
10705 | ||
10706 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10707 | if (--(loc->events_till_retirement) == 0) | |
10708 | { | |
10709 | decref_bp_location (&loc); | |
10710 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
10711 | --ix; | |
10712 | } | |
10713 | } | |
10714 | ||
10715 | static void | |
10716 | update_global_location_list_nothrow (int inserting) | |
10717 | { | |
10718 | struct gdb_exception e; | |
10719 | ||
10720 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10721 | update_global_location_list (inserting); | |
10722 | } | |
10723 | ||
10724 | /* Clear BKP from a BPS. */ | |
10725 | ||
10726 | static void | |
10727 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
10728 | { | |
10729 | bpstat bs; | |
10730 | ||
10731 | for (bs = bps; bs; bs = bs->next) | |
10732 | if (bs->breakpoint_at == bpt) | |
10733 | { | |
10734 | bs->breakpoint_at = NULL; | |
10735 | bs->old_val = NULL; | |
10736 | /* bs->commands will be freed later. */ | |
10737 | } | |
10738 | } | |
10739 | ||
10740 | /* Callback for iterate_over_threads. */ | |
10741 | static int | |
10742 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
10743 | { | |
10744 | struct breakpoint *bpt = data; | |
10745 | ||
10746 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
10747 | return 0; | |
10748 | } | |
10749 | ||
10750 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
10751 | callbacks. */ | |
10752 | ||
10753 | static void | |
10754 | say_where (struct breakpoint *b) | |
10755 | { | |
79a45e25 | 10756 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10757 | struct value_print_options opts; |
10758 | ||
10759 | get_user_print_options (&opts); | |
10760 | ||
10761 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
10762 | single string. */ | |
10763 | if (b->loc == NULL) | |
10764 | { | |
10765 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
10766 | } | |
10767 | else | |
10768 | { | |
f8eba3c6 | 10769 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
10770 | { |
10771 | printf_filtered (" at "); | |
10772 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
10773 | gdb_stdout); | |
10774 | } | |
f8eba3c6 TT |
10775 | if (b->loc->source_file) |
10776 | { | |
10777 | /* If there is a single location, we can print the location | |
10778 | more nicely. */ | |
10779 | if (b->loc->next == NULL) | |
10780 | printf_filtered (": file %s, line %d.", | |
10781 | b->loc->source_file, b->loc->line_number); | |
10782 | else | |
10783 | /* This is not ideal, but each location may have a | |
10784 | different file name, and this at least reflects the | |
10785 | real situation somewhat. */ | |
10786 | printf_filtered (": %s.", b->addr_string); | |
10787 | } | |
348d480f PA |
10788 | |
10789 | if (b->loc->next) | |
10790 | { | |
10791 | struct bp_location *loc = b->loc; | |
10792 | int n = 0; | |
10793 | for (; loc; loc = loc->next) | |
10794 | ++n; | |
10795 | printf_filtered (" (%d locations)", n); | |
10796 | } | |
10797 | } | |
10798 | } | |
10799 | ||
348d480f PA |
10800 | /* Default bp_location_ops methods. */ |
10801 | ||
10802 | static void | |
10803 | bp_location_dtor (struct bp_location *self) | |
10804 | { | |
10805 | xfree (self->cond); | |
10806 | xfree (self->function_name); | |
f8eba3c6 | 10807 | xfree (self->source_file); |
348d480f PA |
10808 | } |
10809 | ||
10810 | static const struct bp_location_ops bp_location_ops = | |
10811 | { | |
10812 | bp_location_dtor | |
10813 | }; | |
10814 | ||
2060206e PA |
10815 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
10816 | inherit from. */ | |
348d480f | 10817 | |
2060206e PA |
10818 | static void |
10819 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
10820 | { |
10821 | decref_counted_command_line (&self->commands); | |
10822 | xfree (self->cond_string); | |
348d480f | 10823 | xfree (self->addr_string); |
f8eba3c6 | 10824 | xfree (self->filter); |
348d480f | 10825 | xfree (self->addr_string_range_end); |
348d480f PA |
10826 | } |
10827 | ||
2060206e PA |
10828 | static struct bp_location * |
10829 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
10830 | { |
10831 | struct bp_location *loc; | |
10832 | ||
10833 | loc = XNEW (struct bp_location); | |
10834 | init_bp_location (loc, &bp_location_ops, self); | |
10835 | return loc; | |
10836 | } | |
10837 | ||
2060206e PA |
10838 | static void |
10839 | base_breakpoint_re_set (struct breakpoint *b) | |
10840 | { | |
10841 | /* Nothing to re-set. */ | |
10842 | } | |
10843 | ||
10844 | #define internal_error_pure_virtual_called() \ | |
10845 | gdb_assert_not_reached ("pure virtual function called") | |
10846 | ||
10847 | static int | |
10848 | base_breakpoint_insert_location (struct bp_location *bl) | |
10849 | { | |
10850 | internal_error_pure_virtual_called (); | |
10851 | } | |
10852 | ||
10853 | static int | |
10854 | base_breakpoint_remove_location (struct bp_location *bl) | |
10855 | { | |
10856 | internal_error_pure_virtual_called (); | |
10857 | } | |
10858 | ||
10859 | static int | |
10860 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
10861 | struct address_space *aspace, | |
10862 | CORE_ADDR bp_addr) | |
10863 | { | |
10864 | internal_error_pure_virtual_called (); | |
10865 | } | |
10866 | ||
10867 | static void | |
10868 | base_breakpoint_check_status (bpstat bs) | |
10869 | { | |
10870 | /* Always stop. */ | |
10871 | } | |
10872 | ||
10873 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
10874 | errors. */ | |
10875 | ||
10876 | static int | |
10877 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
10878 | { | |
10879 | internal_error_pure_virtual_called (); | |
10880 | } | |
10881 | ||
10882 | /* A "resources_needed" breakpoint_ops method that just internal | |
10883 | errors. */ | |
10884 | ||
10885 | static int | |
10886 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
10887 | { | |
10888 | internal_error_pure_virtual_called (); | |
10889 | } | |
10890 | ||
10891 | static enum print_stop_action | |
10892 | base_breakpoint_print_it (bpstat bs) | |
10893 | { | |
10894 | internal_error_pure_virtual_called (); | |
10895 | } | |
10896 | ||
10897 | static void | |
10898 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
10899 | struct ui_out *uiout) | |
10900 | { | |
10901 | /* nothing */ | |
10902 | } | |
10903 | ||
10904 | static void | |
10905 | base_breakpoint_print_mention (struct breakpoint *b) | |
10906 | { | |
10907 | internal_error_pure_virtual_called (); | |
10908 | } | |
10909 | ||
10910 | static void | |
10911 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
10912 | { | |
10913 | internal_error_pure_virtual_called (); | |
10914 | } | |
10915 | ||
10916 | static struct breakpoint_ops base_breakpoint_ops = | |
10917 | { | |
10918 | base_breakpoint_dtor, | |
10919 | base_breakpoint_allocate_location, | |
10920 | base_breakpoint_re_set, | |
10921 | base_breakpoint_insert_location, | |
10922 | base_breakpoint_remove_location, | |
10923 | base_breakpoint_breakpoint_hit, | |
10924 | base_breakpoint_check_status, | |
10925 | base_breakpoint_resources_needed, | |
10926 | base_breakpoint_works_in_software_mode, | |
10927 | base_breakpoint_print_it, | |
10928 | NULL, | |
10929 | base_breakpoint_print_one_detail, | |
10930 | base_breakpoint_print_mention, | |
10931 | base_breakpoint_print_recreate | |
10932 | }; | |
10933 | ||
10934 | /* Default breakpoint_ops methods. */ | |
10935 | ||
10936 | static void | |
348d480f PA |
10937 | bkpt_re_set (struct breakpoint *b) |
10938 | { | |
06edf0c0 PA |
10939 | /* FIXME: is this still reachable? */ |
10940 | if (b->addr_string == NULL) | |
10941 | { | |
10942 | /* Anything without a string can't be re-set. */ | |
348d480f | 10943 | delete_breakpoint (b); |
06edf0c0 | 10944 | return; |
348d480f | 10945 | } |
06edf0c0 PA |
10946 | |
10947 | breakpoint_re_set_default (b); | |
348d480f PA |
10948 | } |
10949 | ||
2060206e | 10950 | static int |
348d480f PA |
10951 | bkpt_insert_location (struct bp_location *bl) |
10952 | { | |
10953 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10954 | return target_insert_hw_breakpoint (bl->gdbarch, | |
10955 | &bl->target_info); | |
10956 | else | |
10957 | return target_insert_breakpoint (bl->gdbarch, | |
10958 | &bl->target_info); | |
10959 | } | |
10960 | ||
2060206e | 10961 | static int |
348d480f PA |
10962 | bkpt_remove_location (struct bp_location *bl) |
10963 | { | |
10964 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10965 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
10966 | else | |
10967 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
10968 | } | |
10969 | ||
2060206e | 10970 | static int |
348d480f PA |
10971 | bkpt_breakpoint_hit (const struct bp_location *bl, |
10972 | struct address_space *aspace, CORE_ADDR bp_addr) | |
10973 | { | |
10974 | struct breakpoint *b = bl->owner; | |
10975 | ||
10976 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, | |
10977 | aspace, bp_addr)) | |
10978 | return 0; | |
10979 | ||
10980 | if (overlay_debugging /* unmapped overlay section */ | |
10981 | && section_is_overlay (bl->section) | |
10982 | && !section_is_mapped (bl->section)) | |
10983 | return 0; | |
10984 | ||
10985 | return 1; | |
10986 | } | |
10987 | ||
2060206e | 10988 | static int |
348d480f PA |
10989 | bkpt_resources_needed (const struct bp_location *bl) |
10990 | { | |
10991 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
10992 | ||
10993 | return 1; | |
10994 | } | |
10995 | ||
2060206e | 10996 | static enum print_stop_action |
348d480f PA |
10997 | bkpt_print_it (bpstat bs) |
10998 | { | |
348d480f PA |
10999 | struct breakpoint *b; |
11000 | const struct bp_location *bl; | |
001c8c33 | 11001 | int bp_temp; |
79a45e25 | 11002 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11003 | |
11004 | gdb_assert (bs->bp_location_at != NULL); | |
11005 | ||
11006 | bl = bs->bp_location_at; | |
11007 | b = bs->breakpoint_at; | |
11008 | ||
001c8c33 PA |
11009 | bp_temp = b->disposition == disp_del; |
11010 | if (bl->address != bl->requested_address) | |
11011 | breakpoint_adjustment_warning (bl->requested_address, | |
11012 | bl->address, | |
11013 | b->number, 1); | |
11014 | annotate_breakpoint (b->number); | |
11015 | if (bp_temp) | |
11016 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
11017 | else | |
11018 | ui_out_text (uiout, "\nBreakpoint "); | |
11019 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 11020 | { |
001c8c33 PA |
11021 | ui_out_field_string (uiout, "reason", |
11022 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11023 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 11024 | } |
001c8c33 PA |
11025 | ui_out_field_int (uiout, "bkptno", b->number); |
11026 | ui_out_text (uiout, ", "); | |
06edf0c0 | 11027 | |
001c8c33 | 11028 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11029 | } |
11030 | ||
2060206e | 11031 | static void |
06edf0c0 PA |
11032 | bkpt_print_mention (struct breakpoint *b) |
11033 | { | |
79a45e25 | 11034 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
11035 | return; |
11036 | ||
11037 | switch (b->type) | |
11038 | { | |
11039 | case bp_breakpoint: | |
11040 | case bp_gnu_ifunc_resolver: | |
11041 | if (b->disposition == disp_del) | |
11042 | printf_filtered (_("Temporary breakpoint")); | |
11043 | else | |
11044 | printf_filtered (_("Breakpoint")); | |
11045 | printf_filtered (_(" %d"), b->number); | |
11046 | if (b->type == bp_gnu_ifunc_resolver) | |
11047 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
11048 | break; | |
11049 | case bp_hardware_breakpoint: | |
11050 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
11051 | break; | |
11052 | } | |
11053 | ||
11054 | say_where (b); | |
11055 | } | |
11056 | ||
2060206e | 11057 | static void |
06edf0c0 PA |
11058 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
11059 | { | |
11060 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11061 | fprintf_unfiltered (fp, "tbreak"); | |
11062 | else if (tp->type == bp_breakpoint) | |
11063 | fprintf_unfiltered (fp, "break"); | |
11064 | else if (tp->type == bp_hardware_breakpoint | |
11065 | && tp->disposition == disp_del) | |
11066 | fprintf_unfiltered (fp, "thbreak"); | |
11067 | else if (tp->type == bp_hardware_breakpoint) | |
11068 | fprintf_unfiltered (fp, "hbreak"); | |
11069 | else | |
11070 | internal_error (__FILE__, __LINE__, | |
11071 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11072 | ||
2060206e | 11073 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 11074 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
11075 | } |
11076 | ||
06edf0c0 PA |
11077 | /* Virtual table for internal breakpoints. */ |
11078 | ||
11079 | static void | |
11080 | internal_bkpt_re_set (struct breakpoint *b) | |
11081 | { | |
11082 | switch (b->type) | |
11083 | { | |
11084 | /* Delete overlay event and longjmp master breakpoints; they | |
11085 | will be reset later by breakpoint_re_set. */ | |
11086 | case bp_overlay_event: | |
11087 | case bp_longjmp_master: | |
11088 | case bp_std_terminate_master: | |
11089 | case bp_exception_master: | |
11090 | delete_breakpoint (b); | |
11091 | break; | |
11092 | ||
11093 | /* This breakpoint is special, it's set up when the inferior | |
11094 | starts and we really don't want to touch it. */ | |
11095 | case bp_shlib_event: | |
11096 | ||
11097 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11098 | it is set up, we do not want to touch it. */ | |
11099 | case bp_thread_event: | |
11100 | break; | |
11101 | } | |
11102 | } | |
11103 | ||
11104 | static void | |
11105 | internal_bkpt_check_status (bpstat bs) | |
11106 | { | |
11107 | /* We do not stop for these. */ | |
11108 | bs->stop = 0; | |
11109 | } | |
11110 | ||
11111 | static enum print_stop_action | |
11112 | internal_bkpt_print_it (bpstat bs) | |
11113 | { | |
36dfb11c | 11114 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 11115 | struct breakpoint *b; |
06edf0c0 | 11116 | |
06edf0c0 PA |
11117 | b = bs->breakpoint_at; |
11118 | ||
06edf0c0 PA |
11119 | switch (b->type) |
11120 | { | |
348d480f PA |
11121 | case bp_shlib_event: |
11122 | /* Did we stop because the user set the stop_on_solib_events | |
11123 | variable? (If so, we report this as a generic, "Stopped due | |
11124 | to shlib event" message.) */ | |
36dfb11c TT |
11125 | ui_out_text (uiout, _("Stopped due to shared library event\n")); |
11126 | if (ui_out_is_mi_like_p (uiout)) | |
11127 | ui_out_field_string (uiout, "reason", | |
11128 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
348d480f PA |
11129 | break; |
11130 | ||
11131 | case bp_thread_event: | |
11132 | /* Not sure how we will get here. | |
11133 | GDB should not stop for these breakpoints. */ | |
11134 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11135 | break; |
11136 | ||
11137 | case bp_overlay_event: | |
11138 | /* By analogy with the thread event, GDB should not stop for these. */ | |
11139 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11140 | break; |
11141 | ||
11142 | case bp_longjmp_master: | |
11143 | /* These should never be enabled. */ | |
11144 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11145 | break; |
11146 | ||
11147 | case bp_std_terminate_master: | |
11148 | /* These should never be enabled. */ | |
11149 | printf_filtered (_("std::terminate Master Breakpoint: " | |
11150 | "gdb should not stop!\n")); | |
348d480f PA |
11151 | break; |
11152 | ||
11153 | case bp_exception_master: | |
11154 | /* These should never be enabled. */ | |
11155 | printf_filtered (_("Exception Master Breakpoint: " | |
11156 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11157 | break; |
11158 | } | |
11159 | ||
001c8c33 | 11160 | return PRINT_NOTHING; |
06edf0c0 PA |
11161 | } |
11162 | ||
11163 | static void | |
11164 | internal_bkpt_print_mention (struct breakpoint *b) | |
11165 | { | |
11166 | /* Nothing to mention. These breakpoints are internal. */ | |
11167 | } | |
11168 | ||
06edf0c0 PA |
11169 | /* Virtual table for momentary breakpoints */ |
11170 | ||
11171 | static void | |
11172 | momentary_bkpt_re_set (struct breakpoint *b) | |
11173 | { | |
11174 | /* Keep temporary breakpoints, which can be encountered when we step | |
11175 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
11176 | Otherwise these should have been blown away via the cleanup chain | |
11177 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11178 | } | |
11179 | ||
11180 | static void | |
11181 | momentary_bkpt_check_status (bpstat bs) | |
11182 | { | |
11183 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11184 | } | |
11185 | ||
11186 | static enum print_stop_action | |
11187 | momentary_bkpt_print_it (bpstat bs) | |
11188 | { | |
79a45e25 PA |
11189 | struct ui_out *uiout = current_uiout; |
11190 | ||
001c8c33 | 11191 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 11192 | { |
001c8c33 | 11193 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 11194 | |
001c8c33 PA |
11195 | switch (b->type) |
11196 | { | |
11197 | case bp_finish: | |
11198 | ui_out_field_string | |
11199 | (uiout, "reason", | |
11200 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
11201 | break; | |
348d480f | 11202 | |
001c8c33 PA |
11203 | case bp_until: |
11204 | ui_out_field_string | |
11205 | (uiout, "reason", | |
11206 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
11207 | break; | |
11208 | } | |
348d480f PA |
11209 | } |
11210 | ||
001c8c33 | 11211 | return PRINT_UNKNOWN; |
348d480f PA |
11212 | } |
11213 | ||
06edf0c0 PA |
11214 | static void |
11215 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 11216 | { |
06edf0c0 | 11217 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11218 | } |
11219 | ||
348d480f | 11220 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 11221 | |
348d480f PA |
11222 | static void |
11223 | tracepoint_re_set (struct breakpoint *b) | |
11224 | { | |
11225 | breakpoint_re_set_default (b); | |
11226 | } | |
876fa593 | 11227 | |
348d480f PA |
11228 | static int |
11229 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
11230 | struct address_space *aspace, CORE_ADDR bp_addr) | |
11231 | { | |
11232 | /* By definition, the inferior does not report stops at | |
11233 | tracepoints. */ | |
11234 | return 0; | |
74960c60 VP |
11235 | } |
11236 | ||
11237 | static void | |
348d480f PA |
11238 | tracepoint_print_one_detail (const struct breakpoint *self, |
11239 | struct ui_out *uiout) | |
74960c60 | 11240 | { |
d9b3f62e PA |
11241 | struct tracepoint *tp = (struct tracepoint *) self; |
11242 | if (tp->static_trace_marker_id) | |
348d480f PA |
11243 | { |
11244 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 11245 | |
348d480f PA |
11246 | ui_out_text (uiout, "\tmarker id is "); |
11247 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 11248 | tp->static_trace_marker_id); |
348d480f PA |
11249 | ui_out_text (uiout, "\n"); |
11250 | } | |
0d381245 VP |
11251 | } |
11252 | ||
a474d7c2 | 11253 | static void |
348d480f | 11254 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 11255 | { |
79a45e25 | 11256 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 11257 | return; |
cc59ec59 | 11258 | |
348d480f PA |
11259 | switch (b->type) |
11260 | { | |
11261 | case bp_tracepoint: | |
11262 | printf_filtered (_("Tracepoint")); | |
11263 | printf_filtered (_(" %d"), b->number); | |
11264 | break; | |
11265 | case bp_fast_tracepoint: | |
11266 | printf_filtered (_("Fast tracepoint")); | |
11267 | printf_filtered (_(" %d"), b->number); | |
11268 | break; | |
11269 | case bp_static_tracepoint: | |
11270 | printf_filtered (_("Static tracepoint")); | |
11271 | printf_filtered (_(" %d"), b->number); | |
11272 | break; | |
11273 | default: | |
11274 | internal_error (__FILE__, __LINE__, | |
11275 | _("unhandled tracepoint type %d"), (int) b->type); | |
11276 | } | |
11277 | ||
11278 | say_where (b); | |
a474d7c2 PA |
11279 | } |
11280 | ||
348d480f | 11281 | static void |
d9b3f62e | 11282 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 11283 | { |
d9b3f62e PA |
11284 | struct tracepoint *tp = (struct tracepoint *) self; |
11285 | ||
11286 | if (self->type == bp_fast_tracepoint) | |
348d480f | 11287 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 11288 | if (self->type == bp_static_tracepoint) |
348d480f | 11289 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 11290 | else if (self->type == bp_tracepoint) |
348d480f PA |
11291 | fprintf_unfiltered (fp, "trace"); |
11292 | else | |
11293 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 11294 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 11295 | |
d9b3f62e PA |
11296 | fprintf_unfiltered (fp, " %s", self->addr_string); |
11297 | print_recreate_thread (self, fp); | |
11298 | ||
11299 | if (tp->pass_count) | |
11300 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
11301 | } |
11302 | ||
2060206e | 11303 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 11304 | |
53a5351d | 11305 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 11306 | structures. */ |
c906108c SS |
11307 | |
11308 | void | |
fba45db2 | 11309 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 11310 | { |
52f0bd74 | 11311 | struct breakpoint *b; |
c906108c | 11312 | |
8a3fe4f8 | 11313 | gdb_assert (bpt != NULL); |
c906108c | 11314 | |
4a64f543 MS |
11315 | /* Has this bp already been deleted? This can happen because |
11316 | multiple lists can hold pointers to bp's. bpstat lists are | |
11317 | especial culprits. | |
11318 | ||
11319 | One example of this happening is a watchpoint's scope bp. When | |
11320 | the scope bp triggers, we notice that the watchpoint is out of | |
11321 | scope, and delete it. We also delete its scope bp. But the | |
11322 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
11323 | That bpstat is then checked for auto-deleting bp's, which are | |
11324 | deleted. | |
11325 | ||
11326 | A real solution to this problem might involve reference counts in | |
11327 | bp's, and/or giving them pointers back to their referencing | |
11328 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
11329 | storage when no more references were extent. A cheaper bandaid | |
11330 | was chosen. */ | |
c906108c SS |
11331 | if (bpt->type == bp_none) |
11332 | return; | |
11333 | ||
4a64f543 MS |
11334 | /* At least avoid this stale reference until the reference counting |
11335 | of breakpoints gets resolved. */ | |
d0fb5eae | 11336 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 11337 | { |
d0fb5eae | 11338 | struct breakpoint *related; |
3a5c3e22 | 11339 | struct watchpoint *w; |
d0fb5eae JK |
11340 | |
11341 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 11342 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 11343 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
11344 | w = (struct watchpoint *) bpt; |
11345 | else | |
11346 | w = NULL; | |
11347 | if (w != NULL) | |
11348 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
11349 | |
11350 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
11351 | for (related = bpt; related->related_breakpoint != bpt; | |
11352 | related = related->related_breakpoint); | |
11353 | related->related_breakpoint = bpt->related_breakpoint; | |
11354 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
11355 | } |
11356 | ||
a9634178 TJB |
11357 | /* watch_command_1 creates a watchpoint but only sets its number if |
11358 | update_watchpoint succeeds in creating its bp_locations. If there's | |
11359 | a problem in that process, we'll be asked to delete the half-created | |
11360 | watchpoint. In that case, don't announce the deletion. */ | |
11361 | if (bpt->number) | |
11362 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 11363 | |
c906108c SS |
11364 | if (breakpoint_chain == bpt) |
11365 | breakpoint_chain = bpt->next; | |
11366 | ||
c906108c SS |
11367 | ALL_BREAKPOINTS (b) |
11368 | if (b->next == bpt) | |
c5aa993b JM |
11369 | { |
11370 | b->next = bpt->next; | |
11371 | break; | |
11372 | } | |
c906108c | 11373 | |
f431efe5 PA |
11374 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
11375 | been freed. */ | |
11376 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 11377 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
11378 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
11379 | commands are associated with the bpstat; if we remove it here, | |
11380 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
11381 | event-top.c won't do anything, and temporary breakpoints with | |
11382 | commands won't work. */ | |
11383 | ||
11384 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
11385 | ||
4a64f543 MS |
11386 | /* Now that breakpoint is removed from breakpoint list, update the |
11387 | global location list. This will remove locations that used to | |
11388 | belong to this breakpoint. Do this before freeing the breakpoint | |
11389 | itself, since remove_breakpoint looks at location's owner. It | |
11390 | might be better design to have location completely | |
11391 | self-contained, but it's not the case now. */ | |
b60e7edf | 11392 | update_global_location_list (0); |
74960c60 | 11393 | |
348d480f | 11394 | bpt->ops->dtor (bpt); |
4a64f543 MS |
11395 | /* On the chance that someone will soon try again to delete this |
11396 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 11397 | bpt->type = bp_none; |
b8c9b27d | 11398 | xfree (bpt); |
c906108c SS |
11399 | } |
11400 | ||
4d6140d9 AC |
11401 | static void |
11402 | do_delete_breakpoint_cleanup (void *b) | |
11403 | { | |
11404 | delete_breakpoint (b); | |
11405 | } | |
11406 | ||
11407 | struct cleanup * | |
11408 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
11409 | { | |
11410 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
11411 | } | |
11412 | ||
51be5b68 PA |
11413 | /* Iterator function to call a user-provided callback function once |
11414 | for each of B and its related breakpoints. */ | |
11415 | ||
11416 | static void | |
11417 | iterate_over_related_breakpoints (struct breakpoint *b, | |
11418 | void (*function) (struct breakpoint *, | |
11419 | void *), | |
11420 | void *data) | |
11421 | { | |
11422 | struct breakpoint *related; | |
11423 | ||
11424 | related = b; | |
11425 | do | |
11426 | { | |
11427 | struct breakpoint *next; | |
11428 | ||
11429 | /* FUNCTION may delete RELATED. */ | |
11430 | next = related->related_breakpoint; | |
11431 | ||
11432 | if (next == related) | |
11433 | { | |
11434 | /* RELATED is the last ring entry. */ | |
11435 | function (related, data); | |
11436 | ||
11437 | /* FUNCTION may have deleted it, so we'd never reach back to | |
11438 | B. There's nothing left to do anyway, so just break | |
11439 | out. */ | |
11440 | break; | |
11441 | } | |
11442 | else | |
11443 | function (related, data); | |
11444 | ||
11445 | related = next; | |
11446 | } | |
11447 | while (related != b); | |
11448 | } | |
95a42b64 TT |
11449 | |
11450 | static void | |
11451 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11452 | { | |
11453 | delete_breakpoint (b); | |
11454 | } | |
11455 | ||
51be5b68 PA |
11456 | /* A callback for map_breakpoint_numbers that calls |
11457 | delete_breakpoint. */ | |
11458 | ||
11459 | static void | |
11460 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11461 | { | |
11462 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
11463 | } | |
11464 | ||
c906108c | 11465 | void |
fba45db2 | 11466 | delete_command (char *arg, int from_tty) |
c906108c | 11467 | { |
35df4500 | 11468 | struct breakpoint *b, *b_tmp; |
c906108c | 11469 | |
ea9365bb TT |
11470 | dont_repeat (); |
11471 | ||
c906108c SS |
11472 | if (arg == 0) |
11473 | { | |
11474 | int breaks_to_delete = 0; | |
11475 | ||
46c6471b PA |
11476 | /* Delete all breakpoints if no argument. Do not delete |
11477 | internal breakpoints, these have to be deleted with an | |
11478 | explicit breakpoint number argument. */ | |
c5aa993b | 11479 | ALL_BREAKPOINTS (b) |
46c6471b | 11480 | if (user_breakpoint_p (b)) |
973d738b DJ |
11481 | { |
11482 | breaks_to_delete = 1; | |
11483 | break; | |
11484 | } | |
c906108c SS |
11485 | |
11486 | /* Ask user only if there are some breakpoints to delete. */ | |
11487 | if (!from_tty | |
e2e0b3e5 | 11488 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 11489 | { |
35df4500 | 11490 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 11491 | if (user_breakpoint_p (b)) |
c5aa993b | 11492 | delete_breakpoint (b); |
c906108c SS |
11493 | } |
11494 | } | |
11495 | else | |
51be5b68 | 11496 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
11497 | } |
11498 | ||
0d381245 VP |
11499 | static int |
11500 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 11501 | { |
0d381245 VP |
11502 | for (; loc; loc = loc->next) |
11503 | if (!loc->shlib_disabled) | |
11504 | return 0; | |
11505 | return 1; | |
fe3f5fa8 VP |
11506 | } |
11507 | ||
776592bf DE |
11508 | /* Subroutine of update_breakpoint_locations to simplify it. |
11509 | Return non-zero if multiple fns in list LOC have the same name. | |
11510 | Null names are ignored. */ | |
11511 | ||
11512 | static int | |
11513 | ambiguous_names_p (struct bp_location *loc) | |
11514 | { | |
11515 | struct bp_location *l; | |
11516 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
11517 | (int (*) (const void *, |
11518 | const void *)) streq, | |
776592bf DE |
11519 | NULL, xcalloc, xfree); |
11520 | ||
11521 | for (l = loc; l != NULL; l = l->next) | |
11522 | { | |
11523 | const char **slot; | |
11524 | const char *name = l->function_name; | |
11525 | ||
11526 | /* Allow for some names to be NULL, ignore them. */ | |
11527 | if (name == NULL) | |
11528 | continue; | |
11529 | ||
11530 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
11531 | INSERT); | |
4a64f543 MS |
11532 | /* NOTE: We can assume slot != NULL here because xcalloc never |
11533 | returns NULL. */ | |
776592bf DE |
11534 | if (*slot != NULL) |
11535 | { | |
11536 | htab_delete (htab); | |
11537 | return 1; | |
11538 | } | |
11539 | *slot = name; | |
11540 | } | |
11541 | ||
11542 | htab_delete (htab); | |
11543 | return 0; | |
11544 | } | |
11545 | ||
0fb4aa4b PA |
11546 | /* When symbols change, it probably means the sources changed as well, |
11547 | and it might mean the static tracepoint markers are no longer at | |
11548 | the same address or line numbers they used to be at last we | |
11549 | checked. Losing your static tracepoints whenever you rebuild is | |
11550 | undesirable. This function tries to resync/rematch gdb static | |
11551 | tracepoints with the markers on the target, for static tracepoints | |
11552 | that have not been set by marker id. Static tracepoint that have | |
11553 | been set by marker id are reset by marker id in breakpoint_re_set. | |
11554 | The heuristic is: | |
11555 | ||
11556 | 1) For a tracepoint set at a specific address, look for a marker at | |
11557 | the old PC. If one is found there, assume to be the same marker. | |
11558 | If the name / string id of the marker found is different from the | |
11559 | previous known name, assume that means the user renamed the marker | |
11560 | in the sources, and output a warning. | |
11561 | ||
11562 | 2) For a tracepoint set at a given line number, look for a marker | |
11563 | at the new address of the old line number. If one is found there, | |
11564 | assume to be the same marker. If the name / string id of the | |
11565 | marker found is different from the previous known name, assume that | |
11566 | means the user renamed the marker in the sources, and output a | |
11567 | warning. | |
11568 | ||
11569 | 3) If a marker is no longer found at the same address or line, it | |
11570 | may mean the marker no longer exists. But it may also just mean | |
11571 | the code changed a bit. Maybe the user added a few lines of code | |
11572 | that made the marker move up or down (in line number terms). Ask | |
11573 | the target for info about the marker with the string id as we knew | |
11574 | it. If found, update line number and address in the matching | |
11575 | static tracepoint. This will get confused if there's more than one | |
11576 | marker with the same ID (possible in UST, although unadvised | |
11577 | precisely because it confuses tools). */ | |
11578 | ||
11579 | static struct symtab_and_line | |
11580 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
11581 | { | |
d9b3f62e | 11582 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
11583 | struct static_tracepoint_marker marker; |
11584 | CORE_ADDR pc; | |
11585 | int i; | |
11586 | ||
11587 | pc = sal.pc; | |
11588 | if (sal.line) | |
11589 | find_line_pc (sal.symtab, sal.line, &pc); | |
11590 | ||
11591 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
11592 | { | |
d9b3f62e | 11593 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
11594 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
11595 | b->number, | |
d9b3f62e | 11596 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 11597 | |
d9b3f62e PA |
11598 | xfree (tp->static_trace_marker_id); |
11599 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
11600 | release_static_tracepoint_marker (&marker); |
11601 | ||
11602 | return sal; | |
11603 | } | |
11604 | ||
11605 | /* Old marker wasn't found on target at lineno. Try looking it up | |
11606 | by string ID. */ | |
11607 | if (!sal.explicit_pc | |
11608 | && sal.line != 0 | |
11609 | && sal.symtab != NULL | |
d9b3f62e | 11610 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
11611 | { |
11612 | VEC(static_tracepoint_marker_p) *markers; | |
11613 | ||
11614 | markers | |
d9b3f62e | 11615 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
11616 | |
11617 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
11618 | { | |
80e1d417 | 11619 | struct symtab_and_line sal2; |
0fb4aa4b | 11620 | struct symbol *sym; |
80e1d417 | 11621 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 11622 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 11623 | |
80e1d417 | 11624 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 11625 | |
d9b3f62e | 11626 | xfree (tp->static_trace_marker_id); |
80e1d417 | 11627 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
11628 | |
11629 | warning (_("marker for static tracepoint %d (%s) not " | |
11630 | "found at previous line number"), | |
d9b3f62e | 11631 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 11632 | |
80e1d417 | 11633 | init_sal (&sal2); |
0fb4aa4b | 11634 | |
80e1d417 | 11635 | sal2.pc = tpmarker->address; |
0fb4aa4b | 11636 | |
80e1d417 AS |
11637 | sal2 = find_pc_line (tpmarker->address, 0); |
11638 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
11639 | ui_out_text (uiout, "Now in "); |
11640 | if (sym) | |
11641 | { | |
11642 | ui_out_field_string (uiout, "func", | |
11643 | SYMBOL_PRINT_NAME (sym)); | |
11644 | ui_out_text (uiout, " at "); | |
11645 | } | |
80e1d417 | 11646 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
11647 | ui_out_text (uiout, ":"); |
11648 | ||
11649 | if (ui_out_is_mi_like_p (uiout)) | |
11650 | { | |
80e1d417 | 11651 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
11652 | |
11653 | if (fullname) | |
11654 | ui_out_field_string (uiout, "fullname", fullname); | |
11655 | } | |
11656 | ||
80e1d417 | 11657 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
11658 | ui_out_text (uiout, "\n"); |
11659 | ||
80e1d417 | 11660 | b->loc->line_number = sal2.line; |
0fb4aa4b | 11661 | |
f8eba3c6 | 11662 | xfree (b->loc->source_file); |
0fb4aa4b | 11663 | if (sym) |
80e1d417 | 11664 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 11665 | else |
f8eba3c6 | 11666 | b->loc->source_file = NULL; |
0fb4aa4b PA |
11667 | |
11668 | xfree (b->addr_string); | |
11669 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 11670 | sal2.symtab->filename, |
f8eba3c6 | 11671 | b->loc->line_number); |
0fb4aa4b PA |
11672 | |
11673 | /* Might be nice to check if function changed, and warn if | |
11674 | so. */ | |
11675 | ||
80e1d417 | 11676 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
11677 | } |
11678 | } | |
11679 | return sal; | |
11680 | } | |
11681 | ||
8d3788bd VP |
11682 | /* Returns 1 iff locations A and B are sufficiently same that |
11683 | we don't need to report breakpoint as changed. */ | |
11684 | ||
11685 | static int | |
11686 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
11687 | { | |
11688 | while (a && b) | |
11689 | { | |
11690 | if (a->address != b->address) | |
11691 | return 0; | |
11692 | ||
11693 | if (a->shlib_disabled != b->shlib_disabled) | |
11694 | return 0; | |
11695 | ||
11696 | if (a->enabled != b->enabled) | |
11697 | return 0; | |
11698 | ||
11699 | a = a->next; | |
11700 | b = b->next; | |
11701 | } | |
11702 | ||
11703 | if ((a == NULL) != (b == NULL)) | |
11704 | return 0; | |
11705 | ||
11706 | return 1; | |
11707 | } | |
11708 | ||
f1310107 TJB |
11709 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
11710 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
11711 | a ranged breakpoint. */ | |
11712 | ||
0e30163f | 11713 | void |
0d381245 | 11714 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
11715 | struct symtabs_and_lines sals, |
11716 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
11717 | { |
11718 | int i; | |
0d381245 VP |
11719 | struct bp_location *existing_locations = b->loc; |
11720 | ||
f8eba3c6 TT |
11721 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
11722 | { | |
11723 | /* Ranged breakpoints have only one start location and one end | |
11724 | location. */ | |
11725 | b->enable_state = bp_disabled; | |
11726 | update_global_location_list (1); | |
11727 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
11728 | "multiple locations found\n"), | |
11729 | b->number); | |
11730 | return; | |
11731 | } | |
f1310107 | 11732 | |
4a64f543 MS |
11733 | /* If there's no new locations, and all existing locations are |
11734 | pending, don't do anything. This optimizes the common case where | |
11735 | all locations are in the same shared library, that was unloaded. | |
11736 | We'd like to retain the location, so that when the library is | |
11737 | loaded again, we don't loose the enabled/disabled status of the | |
11738 | individual locations. */ | |
0d381245 | 11739 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
11740 | return; |
11741 | ||
fe3f5fa8 VP |
11742 | b->loc = NULL; |
11743 | ||
0d381245 | 11744 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 11745 | { |
f8eba3c6 TT |
11746 | struct bp_location *new_loc; |
11747 | ||
11748 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
11749 | ||
11750 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 11751 | |
0d381245 VP |
11752 | /* Reparse conditions, they might contain references to the |
11753 | old symtab. */ | |
11754 | if (b->cond_string != NULL) | |
11755 | { | |
f1310107 | 11756 | char *s; |
0d381245 | 11757 | struct gdb_exception e; |
fe3f5fa8 | 11758 | |
0d381245 VP |
11759 | s = b->cond_string; |
11760 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11761 | { | |
11762 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
11763 | 0); | |
11764 | } | |
11765 | if (e.reason < 0) | |
11766 | { | |
3e43a32a MS |
11767 | warning (_("failed to reevaluate condition " |
11768 | "for breakpoint %d: %s"), | |
0d381245 VP |
11769 | b->number, e.message); |
11770 | new_loc->enabled = 0; | |
11771 | } | |
11772 | } | |
fe3f5fa8 | 11773 | |
f1310107 TJB |
11774 | if (sals_end.nelts) |
11775 | { | |
11776 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
11777 | ||
11778 | new_loc->length = end - sals.sals[0].pc + 1; | |
11779 | } | |
0d381245 | 11780 | } |
fe3f5fa8 | 11781 | |
514f746b AR |
11782 | /* Update locations of permanent breakpoints. */ |
11783 | if (b->enable_state == bp_permanent) | |
11784 | make_breakpoint_permanent (b); | |
11785 | ||
4a64f543 MS |
11786 | /* If possible, carry over 'disable' status from existing |
11787 | breakpoints. */ | |
0d381245 VP |
11788 | { |
11789 | struct bp_location *e = existing_locations; | |
776592bf DE |
11790 | /* If there are multiple breakpoints with the same function name, |
11791 | e.g. for inline functions, comparing function names won't work. | |
11792 | Instead compare pc addresses; this is just a heuristic as things | |
11793 | may have moved, but in practice it gives the correct answer | |
11794 | often enough until a better solution is found. */ | |
11795 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
11796 | ||
0d381245 VP |
11797 | for (; e; e = e->next) |
11798 | { | |
11799 | if (!e->enabled && e->function_name) | |
11800 | { | |
11801 | struct bp_location *l = b->loc; | |
776592bf DE |
11802 | if (have_ambiguous_names) |
11803 | { | |
11804 | for (; l; l = l->next) | |
f1310107 | 11805 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
11806 | { |
11807 | l->enabled = 0; | |
11808 | break; | |
11809 | } | |
11810 | } | |
11811 | else | |
11812 | { | |
11813 | for (; l; l = l->next) | |
11814 | if (l->function_name | |
11815 | && strcmp (e->function_name, l->function_name) == 0) | |
11816 | { | |
11817 | l->enabled = 0; | |
11818 | break; | |
11819 | } | |
11820 | } | |
0d381245 VP |
11821 | } |
11822 | } | |
11823 | } | |
fe3f5fa8 | 11824 | |
8d3788bd VP |
11825 | if (!locations_are_equal (existing_locations, b->loc)) |
11826 | observer_notify_breakpoint_modified (b); | |
11827 | ||
b60e7edf | 11828 | update_global_location_list (1); |
fe3f5fa8 VP |
11829 | } |
11830 | ||
ef23e705 TJB |
11831 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
11832 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
11833 | ||
11834 | static struct symtabs_and_lines | |
11835 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
11836 | { | |
11837 | char *s; | |
58438ac1 | 11838 | int marker_spec; |
02d20e4a | 11839 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 11840 | volatile struct gdb_exception e; |
ef23e705 TJB |
11841 | |
11842 | s = addr_string; | |
11843 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
11844 | ||
11845 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11846 | { | |
11847 | if (marker_spec) | |
11848 | { | |
d9b3f62e PA |
11849 | struct tracepoint *tp = (struct tracepoint *) b; |
11850 | ||
ef23e705 | 11851 | sals = decode_static_tracepoint_spec (&s); |
d9b3f62e | 11852 | if (sals.nelts > tp->static_trace_marker_id_idx) |
ef23e705 | 11853 | { |
d9b3f62e | 11854 | sals.sals[0] = sals.sals[tp->static_trace_marker_id_idx]; |
ef23e705 TJB |
11855 | sals.nelts = 1; |
11856 | } | |
11857 | else | |
d9b3f62e | 11858 | error (_("marker %s not found"), tp->static_trace_marker_id); |
ef23e705 TJB |
11859 | } |
11860 | else | |
f8eba3c6 TT |
11861 | { |
11862 | struct linespec_result canonical; | |
11863 | ||
11864 | init_linespec_result (&canonical); | |
11865 | decode_line_full (&s, DECODE_LINE_FUNFIRSTLINE, | |
11866 | (struct symtab *) NULL, 0, | |
11867 | &canonical, multiple_symbols_all, | |
11868 | b->filter); | |
11869 | ||
11870 | /* We should get 0 or 1 resulting SALs. */ | |
11871 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
11872 | ||
11873 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
11874 | { | |
11875 | struct linespec_sals *lsal; | |
11876 | ||
11877 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
11878 | sals = lsal->sals; | |
11879 | /* Arrange it so the destructor does not free the | |
11880 | contents. */ | |
11881 | lsal->sals.sals = NULL; | |
11882 | } | |
11883 | ||
11884 | destroy_linespec_result (&canonical); | |
11885 | } | |
ef23e705 TJB |
11886 | } |
11887 | if (e.reason < 0) | |
11888 | { | |
11889 | int not_found_and_ok = 0; | |
11890 | /* For pending breakpoints, it's expected that parsing will | |
11891 | fail until the right shared library is loaded. User has | |
11892 | already told to create pending breakpoints and don't need | |
11893 | extra messages. If breakpoint is in bp_shlib_disabled | |
11894 | state, then user already saw the message about that | |
11895 | breakpoint being disabled, and don't want to see more | |
11896 | errors. */ | |
58438ac1 | 11897 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
11898 | && (b->condition_not_parsed |
11899 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 11900 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
11901 | || b->enable_state == bp_disabled)) |
11902 | not_found_and_ok = 1; | |
11903 | ||
11904 | if (!not_found_and_ok) | |
11905 | { | |
11906 | /* We surely don't want to warn about the same breakpoint | |
11907 | 10 times. One solution, implemented here, is disable | |
11908 | the breakpoint on error. Another solution would be to | |
11909 | have separate 'warning emitted' flag. Since this | |
11910 | happens only when a binary has changed, I don't know | |
11911 | which approach is better. */ | |
11912 | b->enable_state = bp_disabled; | |
11913 | throw_exception (e); | |
11914 | } | |
11915 | } | |
11916 | ||
58438ac1 | 11917 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 11918 | { |
f8eba3c6 | 11919 | int i; |
ef23e705 | 11920 | |
f8eba3c6 TT |
11921 | for (i = 0; i < sals.nelts; ++i) |
11922 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
11923 | if (b->condition_not_parsed && s && s[0]) |
11924 | { | |
11925 | char *cond_string = 0; | |
11926 | int thread = -1; | |
11927 | int task = 0; | |
11928 | ||
11929 | find_condition_and_thread (s, sals.sals[0].pc, | |
11930 | &cond_string, &thread, &task); | |
11931 | if (cond_string) | |
11932 | b->cond_string = cond_string; | |
11933 | b->thread = thread; | |
11934 | b->task = task; | |
11935 | b->condition_not_parsed = 0; | |
11936 | } | |
11937 | ||
11938 | if (b->type == bp_static_tracepoint && !marker_spec) | |
11939 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
ef23e705 | 11940 | |
58438ac1 TT |
11941 | *found = 1; |
11942 | } | |
11943 | else | |
11944 | *found = 0; | |
ef23e705 TJB |
11945 | |
11946 | return sals; | |
11947 | } | |
11948 | ||
348d480f PA |
11949 | /* The default re_set method, for typical hardware or software |
11950 | breakpoints. Reevaluate the breakpoint and recreate its | |
11951 | locations. */ | |
11952 | ||
11953 | static void | |
28010a5d | 11954 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
11955 | { |
11956 | int found; | |
f1310107 | 11957 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 11958 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 11959 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
11960 | |
11961 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
11962 | if (found) | |
11963 | { | |
11964 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 11965 | expanded = sals; |
ef23e705 TJB |
11966 | } |
11967 | ||
f1310107 TJB |
11968 | if (b->addr_string_range_end) |
11969 | { | |
11970 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
11971 | if (found) | |
11972 | { | |
11973 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 11974 | expanded_end = sals_end; |
f1310107 TJB |
11975 | } |
11976 | } | |
11977 | ||
11978 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
11979 | } |
11980 | ||
11981 | /* Prepare the global context for a re-set of breakpoint B. */ | |
11982 | ||
11983 | static struct cleanup * | |
11984 | prepare_re_set_context (struct breakpoint *b) | |
11985 | { | |
11986 | struct cleanup *cleanups; | |
11987 | ||
11988 | input_radix = b->input_radix; | |
11989 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
11990 | if (b->pspace != NULL) |
11991 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
11992 | set_language (b->language); |
11993 | ||
11994 | return cleanups; | |
ef23e705 TJB |
11995 | } |
11996 | ||
c906108c SS |
11997 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
11998 | The value we return ends up being the return value from catch_errors. | |
11999 | Unused in this case. */ | |
12000 | ||
12001 | static int | |
4efb68b1 | 12002 | breakpoint_re_set_one (void *bint) |
c906108c | 12003 | { |
4a64f543 | 12004 | /* Get past catch_errs. */ |
53a5351d | 12005 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 12006 | struct cleanup *cleanups; |
c906108c | 12007 | |
348d480f PA |
12008 | cleanups = prepare_re_set_context (b); |
12009 | b->ops->re_set (b); | |
12010 | do_cleanups (cleanups); | |
c906108c SS |
12011 | return 0; |
12012 | } | |
12013 | ||
69de3c6a | 12014 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 12015 | void |
69de3c6a | 12016 | breakpoint_re_set (void) |
c906108c | 12017 | { |
35df4500 | 12018 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12019 | enum language save_language; |
12020 | int save_input_radix; | |
6c95b8df | 12021 | struct cleanup *old_chain; |
c5aa993b | 12022 | |
c906108c SS |
12023 | save_language = current_language->la_language; |
12024 | save_input_radix = input_radix; | |
6c95b8df PA |
12025 | old_chain = save_current_program_space (); |
12026 | ||
35df4500 | 12027 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12028 | { |
4a64f543 | 12029 | /* Format possible error msg. */ |
fe3f5fa8 | 12030 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
12031 | b->number); |
12032 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 12033 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 12034 | do_cleanups (cleanups); |
c5aa993b | 12035 | } |
c906108c SS |
12036 | set_language (save_language); |
12037 | input_radix = save_input_radix; | |
e62c965a | 12038 | |
0756c555 | 12039 | jit_breakpoint_re_set (); |
4efc6507 | 12040 | |
6c95b8df PA |
12041 | do_cleanups (old_chain); |
12042 | ||
af02033e PP |
12043 | create_overlay_event_breakpoint (); |
12044 | create_longjmp_master_breakpoint (); | |
12045 | create_std_terminate_master_breakpoint (); | |
186c406b | 12046 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
12047 | |
12048 | /* While we're at it, reset the skip list too. */ | |
12049 | skip_re_set (); | |
c906108c SS |
12050 | } |
12051 | \f | |
c906108c SS |
12052 | /* Reset the thread number of this breakpoint: |
12053 | ||
12054 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12055 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12056 | void |
fba45db2 | 12057 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12058 | { |
12059 | if (b->thread != -1) | |
12060 | { | |
39f77062 KB |
12061 | if (in_thread_list (inferior_ptid)) |
12062 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
12063 | |
12064 | /* We're being called after following a fork. The new fork is | |
12065 | selected as current, and unless this was a vfork will have a | |
12066 | different program space from the original thread. Reset that | |
12067 | as well. */ | |
12068 | b->loc->pspace = current_program_space; | |
c906108c SS |
12069 | } |
12070 | } | |
12071 | ||
03ac34d5 MS |
12072 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12073 | If from_tty is nonzero, it prints a message to that effect, | |
12074 | which ends with a period (no newline). */ | |
12075 | ||
c906108c | 12076 | void |
fba45db2 | 12077 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12078 | { |
52f0bd74 | 12079 | struct breakpoint *b; |
c906108c SS |
12080 | |
12081 | if (count < 0) | |
12082 | count = 0; | |
12083 | ||
12084 | ALL_BREAKPOINTS (b) | |
12085 | if (b->number == bptnum) | |
c5aa993b | 12086 | { |
d77f58be SS |
12087 | if (is_tracepoint (b)) |
12088 | { | |
12089 | if (from_tty && count != 0) | |
12090 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
12091 | bptnum); | |
12092 | return; | |
12093 | } | |
12094 | ||
c5aa993b | 12095 | b->ignore_count = count; |
221ea385 KS |
12096 | if (from_tty) |
12097 | { | |
12098 | if (count == 0) | |
3e43a32a MS |
12099 | printf_filtered (_("Will stop next time " |
12100 | "breakpoint %d is reached."), | |
221ea385 KS |
12101 | bptnum); |
12102 | else if (count == 1) | |
a3f17187 | 12103 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
12104 | bptnum); |
12105 | else | |
3e43a32a MS |
12106 | printf_filtered (_("Will ignore next %d " |
12107 | "crossings of breakpoint %d."), | |
221ea385 KS |
12108 | count, bptnum); |
12109 | } | |
c5aa993b | 12110 | breakpoints_changed (); |
8d3788bd | 12111 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
12112 | return; |
12113 | } | |
c906108c | 12114 | |
8a3fe4f8 | 12115 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
12116 | } |
12117 | ||
c906108c SS |
12118 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
12119 | ||
12120 | static void | |
fba45db2 | 12121 | ignore_command (char *args, int from_tty) |
c906108c SS |
12122 | { |
12123 | char *p = args; | |
52f0bd74 | 12124 | int num; |
c906108c SS |
12125 | |
12126 | if (p == 0) | |
e2e0b3e5 | 12127 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 12128 | |
c906108c | 12129 | num = get_number (&p); |
5c44784c | 12130 | if (num == 0) |
8a3fe4f8 | 12131 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 12132 | if (*p == 0) |
8a3fe4f8 | 12133 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
12134 | |
12135 | set_ignore_count (num, | |
12136 | longest_to_int (value_as_long (parse_and_eval (p))), | |
12137 | from_tty); | |
221ea385 KS |
12138 | if (from_tty) |
12139 | printf_filtered ("\n"); | |
c906108c SS |
12140 | } |
12141 | \f | |
12142 | /* Call FUNCTION on each of the breakpoints | |
12143 | whose numbers are given in ARGS. */ | |
12144 | ||
12145 | static void | |
95a42b64 TT |
12146 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
12147 | void *), | |
12148 | void *data) | |
c906108c | 12149 | { |
52f0bd74 AC |
12150 | int num; |
12151 | struct breakpoint *b, *tmp; | |
11cf8741 | 12152 | int match; |
197f0a60 | 12153 | struct get_number_or_range_state state; |
c906108c | 12154 | |
197f0a60 | 12155 | if (args == 0) |
e2e0b3e5 | 12156 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 12157 | |
197f0a60 TT |
12158 | init_number_or_range (&state, args); |
12159 | ||
12160 | while (!state.finished) | |
c906108c | 12161 | { |
197f0a60 TT |
12162 | char *p = state.string; |
12163 | ||
11cf8741 | 12164 | match = 0; |
c5aa993b | 12165 | |
197f0a60 | 12166 | num = get_number_or_range (&state); |
5c44784c | 12167 | if (num == 0) |
c5aa993b | 12168 | { |
8a3fe4f8 | 12169 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
12170 | } |
12171 | else | |
12172 | { | |
12173 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
12174 | if (b->number == num) | |
12175 | { | |
11cf8741 | 12176 | match = 1; |
cdac0397 | 12177 | function (b, data); |
11cf8741 | 12178 | break; |
5c44784c | 12179 | } |
11cf8741 | 12180 | if (match == 0) |
a3f17187 | 12181 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 12182 | } |
c906108c SS |
12183 | } |
12184 | } | |
12185 | ||
0d381245 VP |
12186 | static struct bp_location * |
12187 | find_location_by_number (char *number) | |
12188 | { | |
12189 | char *dot = strchr (number, '.'); | |
12190 | char *p1; | |
12191 | int bp_num; | |
12192 | int loc_num; | |
12193 | struct breakpoint *b; | |
12194 | struct bp_location *loc; | |
12195 | ||
12196 | *dot = '\0'; | |
12197 | ||
12198 | p1 = number; | |
197f0a60 | 12199 | bp_num = get_number (&p1); |
0d381245 VP |
12200 | if (bp_num == 0) |
12201 | error (_("Bad breakpoint number '%s'"), number); | |
12202 | ||
12203 | ALL_BREAKPOINTS (b) | |
12204 | if (b->number == bp_num) | |
12205 | { | |
12206 | break; | |
12207 | } | |
12208 | ||
12209 | if (!b || b->number != bp_num) | |
12210 | error (_("Bad breakpoint number '%s'"), number); | |
12211 | ||
12212 | p1 = dot+1; | |
197f0a60 | 12213 | loc_num = get_number (&p1); |
0d381245 VP |
12214 | if (loc_num == 0) |
12215 | error (_("Bad breakpoint location number '%s'"), number); | |
12216 | ||
12217 | --loc_num; | |
12218 | loc = b->loc; | |
12219 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
12220 | ; | |
12221 | if (!loc) | |
12222 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
12223 | ||
12224 | return loc; | |
12225 | } | |
12226 | ||
12227 | ||
1900040c MS |
12228 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12229 | If from_tty is nonzero, it prints a message to that effect, | |
12230 | which ends with a period (no newline). */ | |
12231 | ||
c906108c | 12232 | void |
fba45db2 | 12233 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
12234 | { |
12235 | /* Never disable a watchpoint scope breakpoint; we want to | |
12236 | hit them when we leave scope so we can delete both the | |
12237 | watchpoint and its scope breakpoint at that time. */ | |
12238 | if (bpt->type == bp_watchpoint_scope) | |
12239 | return; | |
12240 | ||
c2c6d25f | 12241 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 12242 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
12243 | return; |
12244 | ||
b5de0fa7 | 12245 | bpt->enable_state = bp_disabled; |
c906108c | 12246 | |
d248b706 KY |
12247 | if (target_supports_enable_disable_tracepoint () |
12248 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12249 | { | |
12250 | struct bp_location *location; | |
12251 | ||
12252 | for (location = bpt->loc; location; location = location->next) | |
12253 | target_disable_tracepoint (location); | |
12254 | } | |
12255 | ||
b60e7edf | 12256 | update_global_location_list (0); |
c906108c | 12257 | |
8d3788bd | 12258 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12259 | } |
12260 | ||
51be5b68 PA |
12261 | /* A callback for iterate_over_related_breakpoints. */ |
12262 | ||
12263 | static void | |
12264 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12265 | { | |
12266 | disable_breakpoint (b); | |
12267 | } | |
12268 | ||
95a42b64 TT |
12269 | /* A callback for map_breakpoint_numbers that calls |
12270 | disable_breakpoint. */ | |
12271 | ||
12272 | static void | |
12273 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12274 | { | |
51be5b68 | 12275 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
12276 | } |
12277 | ||
c906108c | 12278 | static void |
fba45db2 | 12279 | disable_command (char *args, int from_tty) |
c906108c | 12280 | { |
c906108c | 12281 | if (args == 0) |
46c6471b PA |
12282 | { |
12283 | struct breakpoint *bpt; | |
12284 | ||
12285 | ALL_BREAKPOINTS (bpt) | |
12286 | if (user_breakpoint_p (bpt)) | |
12287 | disable_breakpoint (bpt); | |
12288 | } | |
0d381245 VP |
12289 | else if (strchr (args, '.')) |
12290 | { | |
12291 | struct bp_location *loc = find_location_by_number (args); | |
12292 | if (loc) | |
d248b706 KY |
12293 | { |
12294 | loc->enabled = 0; | |
12295 | if (target_supports_enable_disable_tracepoint () | |
12296 | && current_trace_status ()->running && loc->owner | |
12297 | && is_tracepoint (loc->owner)) | |
12298 | target_disable_tracepoint (loc); | |
12299 | } | |
b60e7edf | 12300 | update_global_location_list (0); |
0d381245 | 12301 | } |
c906108c | 12302 | else |
95a42b64 | 12303 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
12304 | } |
12305 | ||
12306 | static void | |
51be5b68 | 12307 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 12308 | { |
afe38095 | 12309 | int target_resources_ok; |
c906108c SS |
12310 | |
12311 | if (bpt->type == bp_hardware_breakpoint) | |
12312 | { | |
12313 | int i; | |
c5aa993b | 12314 | i = hw_breakpoint_used_count (); |
53a5351d | 12315 | target_resources_ok = |
d92524f1 | 12316 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 12317 | i + 1, 0); |
c906108c | 12318 | if (target_resources_ok == 0) |
8a3fe4f8 | 12319 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 12320 | else if (target_resources_ok < 0) |
8a3fe4f8 | 12321 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
12322 | } |
12323 | ||
cc60f2e3 | 12324 | if (is_watchpoint (bpt)) |
c906108c | 12325 | { |
d07205c2 JK |
12326 | /* Initialize it just to avoid a GCC false warning. */ |
12327 | enum enable_state orig_enable_state = 0; | |
dde02812 ES |
12328 | struct gdb_exception e; |
12329 | ||
12330 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 12331 | { |
3a5c3e22 PA |
12332 | struct watchpoint *w = (struct watchpoint *) bpt; |
12333 | ||
1e718ff1 TJB |
12334 | orig_enable_state = bpt->enable_state; |
12335 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 12336 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 12337 | } |
dde02812 | 12338 | if (e.reason < 0) |
c5aa993b | 12339 | { |
1e718ff1 | 12340 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
12341 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
12342 | bpt->number); | |
12343 | return; | |
c5aa993b | 12344 | } |
c906108c | 12345 | } |
0101ce28 | 12346 | |
b4c291bb KH |
12347 | if (bpt->enable_state != bp_permanent) |
12348 | bpt->enable_state = bp_enabled; | |
d248b706 KY |
12349 | |
12350 | if (target_supports_enable_disable_tracepoint () | |
12351 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12352 | { | |
12353 | struct bp_location *location; | |
12354 | ||
12355 | for (location = bpt->loc; location; location = location->next) | |
12356 | target_enable_tracepoint (location); | |
12357 | } | |
12358 | ||
b4c291bb | 12359 | bpt->disposition = disposition; |
b60e7edf | 12360 | update_global_location_list (1); |
b4c291bb KH |
12361 | breakpoints_changed (); |
12362 | ||
8d3788bd | 12363 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12364 | } |
12365 | ||
fe3f5fa8 | 12366 | |
c906108c | 12367 | void |
fba45db2 | 12368 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 12369 | { |
51be5b68 PA |
12370 | enable_breakpoint_disp (bpt, bpt->disposition); |
12371 | } | |
12372 | ||
12373 | static void | |
12374 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
12375 | { | |
12376 | enable_breakpoint (bpt); | |
c906108c SS |
12377 | } |
12378 | ||
95a42b64 TT |
12379 | /* A callback for map_breakpoint_numbers that calls |
12380 | enable_breakpoint. */ | |
12381 | ||
12382 | static void | |
12383 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
12384 | { | |
51be5b68 | 12385 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
12386 | } |
12387 | ||
c906108c SS |
12388 | /* The enable command enables the specified breakpoints (or all defined |
12389 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 12390 | in stopping the inferior. */ |
c906108c | 12391 | |
c906108c | 12392 | static void |
fba45db2 | 12393 | enable_command (char *args, int from_tty) |
c906108c | 12394 | { |
c906108c | 12395 | if (args == 0) |
46c6471b PA |
12396 | { |
12397 | struct breakpoint *bpt; | |
12398 | ||
12399 | ALL_BREAKPOINTS (bpt) | |
12400 | if (user_breakpoint_p (bpt)) | |
12401 | enable_breakpoint (bpt); | |
12402 | } | |
0d381245 VP |
12403 | else if (strchr (args, '.')) |
12404 | { | |
12405 | struct bp_location *loc = find_location_by_number (args); | |
12406 | if (loc) | |
d248b706 KY |
12407 | { |
12408 | loc->enabled = 1; | |
12409 | if (target_supports_enable_disable_tracepoint () | |
12410 | && current_trace_status ()->running && loc->owner | |
12411 | && is_tracepoint (loc->owner)) | |
12412 | target_enable_tracepoint (loc); | |
12413 | } | |
b60e7edf | 12414 | update_global_location_list (1); |
0d381245 | 12415 | } |
c906108c | 12416 | else |
95a42b64 | 12417 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
12418 | } |
12419 | ||
12420 | static void | |
51be5b68 PA |
12421 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
12422 | { | |
12423 | enum bpdisp disp = *(enum bpdisp *) arg; | |
12424 | ||
12425 | enable_breakpoint_disp (bpt, disp); | |
12426 | } | |
12427 | ||
12428 | static void | |
12429 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 12430 | { |
51be5b68 PA |
12431 | enum bpdisp disp = disp_disable; |
12432 | ||
12433 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12434 | } |
12435 | ||
c906108c | 12436 | static void |
fba45db2 | 12437 | enable_once_command (char *args, int from_tty) |
c906108c | 12438 | { |
51be5b68 | 12439 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
12440 | } |
12441 | ||
12442 | static void | |
51be5b68 | 12443 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 12444 | { |
51be5b68 PA |
12445 | enum bpdisp disp = disp_del; |
12446 | ||
12447 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12448 | } |
12449 | ||
c906108c | 12450 | static void |
fba45db2 | 12451 | enable_delete_command (char *args, int from_tty) |
c906108c | 12452 | { |
51be5b68 | 12453 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
12454 | } |
12455 | \f | |
fa8d40ab JJ |
12456 | static void |
12457 | set_breakpoint_cmd (char *args, int from_tty) | |
12458 | { | |
12459 | } | |
12460 | ||
12461 | static void | |
12462 | show_breakpoint_cmd (char *args, int from_tty) | |
12463 | { | |
12464 | } | |
12465 | ||
1f3b5d1b PP |
12466 | /* Invalidate last known value of any hardware watchpoint if |
12467 | the memory which that value represents has been written to by | |
12468 | GDB itself. */ | |
12469 | ||
12470 | static void | |
12471 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
12472 | const bfd_byte *data) | |
12473 | { | |
12474 | struct breakpoint *bp; | |
12475 | ||
12476 | ALL_BREAKPOINTS (bp) | |
12477 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 12478 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 12479 | { |
3a5c3e22 | 12480 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 12481 | |
3a5c3e22 PA |
12482 | if (wp->val_valid && wp->val) |
12483 | { | |
12484 | struct bp_location *loc; | |
12485 | ||
12486 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
12487 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
12488 | && loc->address + loc->length > addr | |
12489 | && addr + len > loc->address) | |
12490 | { | |
12491 | value_free (wp->val); | |
12492 | wp->val = NULL; | |
12493 | wp->val_valid = 0; | |
12494 | } | |
12495 | } | |
1f3b5d1b PP |
12496 | } |
12497 | } | |
12498 | ||
1bfeeb0f JL |
12499 | /* Use the last displayed codepoint's values, or nothing |
12500 | if they aren't valid. */ | |
c906108c SS |
12501 | |
12502 | struct symtabs_and_lines | |
f8eba3c6 | 12503 | decode_line_spec_1 (char *string, int flags) |
c906108c SS |
12504 | { |
12505 | struct symtabs_and_lines sals; | |
cc59ec59 | 12506 | |
c906108c | 12507 | if (string == 0) |
8a3fe4f8 | 12508 | error (_("Empty line specification.")); |
1bfeeb0f | 12509 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 12510 | sals = decode_line_1 (&string, flags, |
1bfeeb0f | 12511 | get_last_displayed_symtab (), |
f8eba3c6 | 12512 | get_last_displayed_line ()); |
c906108c | 12513 | else |
f8eba3c6 | 12514 | sals = decode_line_1 (&string, flags, (struct symtab *) NULL, 0); |
c906108c | 12515 | if (*string) |
8a3fe4f8 | 12516 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
12517 | return sals; |
12518 | } | |
8181d85f DJ |
12519 | |
12520 | /* Create and insert a raw software breakpoint at PC. Return an | |
12521 | identifier, which should be used to remove the breakpoint later. | |
12522 | In general, places which call this should be using something on the | |
12523 | breakpoint chain instead; this function should be eliminated | |
12524 | someday. */ | |
12525 | ||
12526 | void * | |
6c95b8df PA |
12527 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
12528 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
12529 | { |
12530 | struct bp_target_info *bp_tgt; | |
12531 | ||
6c95b8df | 12532 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 12533 | |
6c95b8df | 12534 | bp_tgt->placed_address_space = aspace; |
8181d85f | 12535 | bp_tgt->placed_address = pc; |
6c95b8df | 12536 | |
a6d9a66e | 12537 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
12538 | { |
12539 | /* Could not insert the breakpoint. */ | |
12540 | xfree (bp_tgt); | |
12541 | return NULL; | |
12542 | } | |
12543 | ||
12544 | return bp_tgt; | |
12545 | } | |
12546 | ||
4a64f543 MS |
12547 | /* Remove a breakpoint BP inserted by |
12548 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
12549 | |
12550 | int | |
a6d9a66e | 12551 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
12552 | { |
12553 | struct bp_target_info *bp_tgt = bp; | |
12554 | int ret; | |
12555 | ||
a6d9a66e | 12556 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
12557 | xfree (bp_tgt); |
12558 | ||
12559 | return ret; | |
12560 | } | |
12561 | ||
4a64f543 MS |
12562 | /* One (or perhaps two) breakpoints used for software single |
12563 | stepping. */ | |
8181d85f DJ |
12564 | |
12565 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 12566 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
12567 | |
12568 | /* Create and insert a breakpoint for software single step. */ | |
12569 | ||
12570 | void | |
6c95b8df | 12571 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
12572 | struct address_space *aspace, |
12573 | CORE_ADDR next_pc) | |
8181d85f DJ |
12574 | { |
12575 | void **bpt_p; | |
12576 | ||
12577 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
12578 | { |
12579 | bpt_p = &single_step_breakpoints[0]; | |
12580 | single_step_gdbarch[0] = gdbarch; | |
12581 | } | |
8181d85f DJ |
12582 | else |
12583 | { | |
12584 | gdb_assert (single_step_breakpoints[1] == NULL); | |
12585 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 12586 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
12587 | } |
12588 | ||
4a64f543 MS |
12589 | /* NOTE drow/2006-04-11: A future improvement to this function would |
12590 | be to only create the breakpoints once, and actually put them on | |
12591 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
12592 | We could adjust the addresses each time they were needed. Doing | |
12593 | this requires corresponding changes elsewhere where single step | |
12594 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 12595 | |
6c95b8df | 12596 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 12597 | if (*bpt_p == NULL) |
5af949e3 UW |
12598 | error (_("Could not insert single-step breakpoint at %s"), |
12599 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
12600 | } |
12601 | ||
f02253f1 HZ |
12602 | /* Check if the breakpoints used for software single stepping |
12603 | were inserted or not. */ | |
12604 | ||
12605 | int | |
12606 | single_step_breakpoints_inserted (void) | |
12607 | { | |
12608 | return (single_step_breakpoints[0] != NULL | |
12609 | || single_step_breakpoints[1] != NULL); | |
12610 | } | |
12611 | ||
8181d85f DJ |
12612 | /* Remove and delete any breakpoints used for software single step. */ |
12613 | ||
12614 | void | |
12615 | remove_single_step_breakpoints (void) | |
12616 | { | |
12617 | gdb_assert (single_step_breakpoints[0] != NULL); | |
12618 | ||
12619 | /* See insert_single_step_breakpoint for more about this deprecated | |
12620 | call. */ | |
a6d9a66e UW |
12621 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
12622 | single_step_breakpoints[0]); | |
12623 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
12624 | single_step_breakpoints[0] = NULL; |
12625 | ||
12626 | if (single_step_breakpoints[1] != NULL) | |
12627 | { | |
a6d9a66e UW |
12628 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
12629 | single_step_breakpoints[1]); | |
12630 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
12631 | single_step_breakpoints[1] = NULL; |
12632 | } | |
12633 | } | |
12634 | ||
d03285ec UW |
12635 | /* Delete software single step breakpoints without removing them from |
12636 | the inferior. This is intended to be used if the inferior's address | |
12637 | space where they were inserted is already gone, e.g. after exit or | |
12638 | exec. */ | |
12639 | ||
12640 | void | |
12641 | cancel_single_step_breakpoints (void) | |
12642 | { | |
12643 | int i; | |
12644 | ||
12645 | for (i = 0; i < 2; i++) | |
12646 | if (single_step_breakpoints[i]) | |
12647 | { | |
12648 | xfree (single_step_breakpoints[i]); | |
12649 | single_step_breakpoints[i] = NULL; | |
12650 | single_step_gdbarch[i] = NULL; | |
12651 | } | |
12652 | } | |
12653 | ||
12654 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
12655 | removing them. */ | |
12656 | ||
12657 | static void | |
12658 | detach_single_step_breakpoints (void) | |
12659 | { | |
12660 | int i; | |
12661 | ||
12662 | for (i = 0; i < 2; i++) | |
12663 | if (single_step_breakpoints[i]) | |
12664 | target_remove_breakpoint (single_step_gdbarch[i], | |
12665 | single_step_breakpoints[i]); | |
12666 | } | |
12667 | ||
4a64f543 MS |
12668 | /* Check whether a software single-step breakpoint is inserted at |
12669 | PC. */ | |
1aafd4da UW |
12670 | |
12671 | static int | |
cc59ec59 MS |
12672 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
12673 | CORE_ADDR pc) | |
1aafd4da UW |
12674 | { |
12675 | int i; | |
12676 | ||
12677 | for (i = 0; i < 2; i++) | |
12678 | { | |
12679 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
12680 | if (bp_tgt |
12681 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
12682 | bp_tgt->placed_address, | |
12683 | aspace, pc)) | |
1aafd4da UW |
12684 | return 1; |
12685 | } | |
12686 | ||
12687 | return 0; | |
12688 | } | |
12689 | ||
a96d9b2e SDJ |
12690 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
12691 | non-zero otherwise. */ | |
12692 | static int | |
12693 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
12694 | { | |
12695 | if (syscall_catchpoint_p (bp) | |
12696 | && bp->enable_state != bp_disabled | |
12697 | && bp->enable_state != bp_call_disabled) | |
12698 | return 1; | |
12699 | else | |
12700 | return 0; | |
12701 | } | |
12702 | ||
12703 | int | |
12704 | catch_syscall_enabled (void) | |
12705 | { | |
12706 | struct inferior *inf = current_inferior (); | |
12707 | ||
12708 | return inf->total_syscalls_count != 0; | |
12709 | } | |
12710 | ||
12711 | int | |
12712 | catching_syscall_number (int syscall_number) | |
12713 | { | |
12714 | struct breakpoint *bp; | |
12715 | ||
12716 | ALL_BREAKPOINTS (bp) | |
12717 | if (is_syscall_catchpoint_enabled (bp)) | |
12718 | { | |
be5c67c1 PA |
12719 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
12720 | ||
12721 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
12722 | { |
12723 | int i, iter; | |
12724 | for (i = 0; | |
be5c67c1 | 12725 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
12726 | i++) |
12727 | if (syscall_number == iter) | |
12728 | return 1; | |
12729 | } | |
12730 | else | |
12731 | return 1; | |
12732 | } | |
12733 | ||
12734 | return 0; | |
12735 | } | |
12736 | ||
12737 | /* Complete syscall names. Used by "catch syscall". */ | |
12738 | static char ** | |
12739 | catch_syscall_completer (struct cmd_list_element *cmd, | |
12740 | char *text, char *word) | |
12741 | { | |
12742 | const char **list = get_syscall_names (); | |
c38eea1a MS |
12743 | char **retlist |
12744 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 12745 | |
c38eea1a MS |
12746 | xfree (list); |
12747 | return retlist; | |
a96d9b2e SDJ |
12748 | } |
12749 | ||
1042e4c0 SS |
12750 | /* Tracepoint-specific operations. */ |
12751 | ||
12752 | /* Set tracepoint count to NUM. */ | |
12753 | static void | |
12754 | set_tracepoint_count (int num) | |
12755 | { | |
12756 | tracepoint_count = num; | |
4fa62494 | 12757 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
12758 | } |
12759 | ||
12760 | void | |
12761 | trace_command (char *arg, int from_tty) | |
12762 | { | |
8cdf0e15 VP |
12763 | if (create_breakpoint (get_current_arch (), |
12764 | arg, | |
12765 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12766 | 0 /* tempflag */, |
12767 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12768 | 0 /* Ignore count */, |
12769 | pending_break_support, | |
348d480f | 12770 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12771 | from_tty, |
84f4c1fe PM |
12772 | 1 /* enabled */, |
12773 | 0 /* internal */)) | |
fd9b8c24 | 12774 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
12775 | } |
12776 | ||
7a697b8d SS |
12777 | void |
12778 | ftrace_command (char *arg, int from_tty) | |
12779 | { | |
8cdf0e15 VP |
12780 | if (create_breakpoint (get_current_arch (), |
12781 | arg, | |
12782 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12783 | 0 /* tempflag */, |
12784 | bp_fast_tracepoint /* type_wanted */, | |
12785 | 0 /* Ignore count */, | |
12786 | pending_break_support, | |
348d480f | 12787 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 12788 | from_tty, |
84f4c1fe PM |
12789 | 1 /* enabled */, |
12790 | 0 /* internal */)) | |
0fb4aa4b PA |
12791 | set_tracepoint_count (breakpoint_count); |
12792 | } | |
12793 | ||
12794 | /* strace command implementation. Creates a static tracepoint. */ | |
12795 | ||
12796 | void | |
12797 | strace_command (char *arg, int from_tty) | |
12798 | { | |
12799 | if (create_breakpoint (get_current_arch (), | |
12800 | arg, | |
12801 | NULL, 0, 1 /* parse arg */, | |
12802 | 0 /* tempflag */, | |
12803 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12804 | 0 /* Ignore count */, |
12805 | pending_break_support, | |
348d480f | 12806 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12807 | from_tty, |
84f4c1fe PM |
12808 | 1 /* enabled */, |
12809 | 0 /* internal */)) | |
fd9b8c24 | 12810 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
12811 | } |
12812 | ||
409873ef SS |
12813 | /* Set up a fake reader function that gets command lines from a linked |
12814 | list that was acquired during tracepoint uploading. */ | |
12815 | ||
12816 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 12817 | static int next_cmd; |
409873ef SS |
12818 | |
12819 | static char * | |
12820 | read_uploaded_action (void) | |
12821 | { | |
12822 | char *rslt; | |
12823 | ||
3149d8c1 | 12824 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 12825 | |
3149d8c1 | 12826 | next_cmd++; |
409873ef SS |
12827 | |
12828 | return rslt; | |
12829 | } | |
12830 | ||
00bf0b85 SS |
12831 | /* Given information about a tracepoint as recorded on a target (which |
12832 | can be either a live system or a trace file), attempt to create an | |
12833 | equivalent GDB tracepoint. This is not a reliable process, since | |
12834 | the target does not necessarily have all the information used when | |
12835 | the tracepoint was originally defined. */ | |
12836 | ||
d9b3f62e | 12837 | struct tracepoint * |
00bf0b85 | 12838 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 12839 | { |
409873ef | 12840 | char *addr_str, small_buf[100]; |
d9b3f62e | 12841 | struct tracepoint *tp; |
fd9b8c24 | 12842 | |
409873ef SS |
12843 | if (utp->at_string) |
12844 | addr_str = utp->at_string; | |
12845 | else | |
12846 | { | |
12847 | /* In the absence of a source location, fall back to raw | |
12848 | address. Since there is no way to confirm that the address | |
12849 | means the same thing as when the trace was started, warn the | |
12850 | user. */ | |
3e43a32a MS |
12851 | warning (_("Uploaded tracepoint %d has no " |
12852 | "source location, using raw address"), | |
409873ef SS |
12853 | utp->number); |
12854 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
12855 | addr_str = small_buf; | |
12856 | } | |
12857 | ||
12858 | /* There's not much we can do with a sequence of bytecodes. */ | |
12859 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
12860 | warning (_("Uploaded tracepoint %d condition " |
12861 | "has no source form, ignoring it"), | |
409873ef | 12862 | utp->number); |
d5551862 | 12863 | |
8cdf0e15 | 12864 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
12865 | addr_str, |
12866 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 12867 | 0 /* tempflag */, |
0fb4aa4b | 12868 | utp->type /* type_wanted */, |
8cdf0e15 VP |
12869 | 0 /* Ignore count */, |
12870 | pending_break_support, | |
348d480f | 12871 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12872 | 0 /* from_tty */, |
84f4c1fe PM |
12873 | utp->enabled /* enabled */, |
12874 | 0 /* internal */)) | |
fd9b8c24 PA |
12875 | return NULL; |
12876 | ||
00bf0b85 SS |
12877 | set_tracepoint_count (breakpoint_count); |
12878 | ||
409873ef | 12879 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
12880 | tp = get_tracepoint (tracepoint_count); |
12881 | gdb_assert (tp != NULL); | |
d5551862 | 12882 | |
00bf0b85 SS |
12883 | if (utp->pass > 0) |
12884 | { | |
d9b3f62e | 12885 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 12886 | |
409873ef | 12887 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
12888 | } |
12889 | ||
409873ef SS |
12890 | /* If we have uploaded versions of the original commands, set up a |
12891 | special-purpose "reader" function and call the usual command line | |
12892 | reader, then pass the result to the breakpoint command-setting | |
12893 | function. */ | |
3149d8c1 | 12894 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 12895 | { |
409873ef | 12896 | struct command_line *cmd_list; |
00bf0b85 | 12897 | |
409873ef | 12898 | this_utp = utp; |
3149d8c1 | 12899 | next_cmd = 0; |
d5551862 | 12900 | |
409873ef SS |
12901 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
12902 | ||
d9b3f62e | 12903 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 12904 | } |
3149d8c1 SS |
12905 | else if (!VEC_empty (char_ptr, utp->actions) |
12906 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
12907 | warning (_("Uploaded tracepoint %d actions " |
12908 | "have no source form, ignoring them"), | |
409873ef | 12909 | utp->number); |
00bf0b85 | 12910 | |
f196051f SS |
12911 | /* Copy any status information that might be available. */ |
12912 | tp->base.hit_count = utp->hit_count; | |
12913 | tp->traceframe_usage = utp->traceframe_usage; | |
12914 | ||
00bf0b85 | 12915 | return tp; |
d9b3f62e | 12916 | } |
00bf0b85 | 12917 | |
1042e4c0 SS |
12918 | /* Print information on tracepoint number TPNUM_EXP, or all if |
12919 | omitted. */ | |
12920 | ||
12921 | static void | |
e5a67952 | 12922 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 12923 | { |
79a45e25 | 12924 | struct ui_out *uiout = current_uiout; |
e5a67952 | 12925 | int num_printed; |
1042e4c0 | 12926 | |
e5a67952 | 12927 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
12928 | |
12929 | if (num_printed == 0) | |
1042e4c0 | 12930 | { |
e5a67952 | 12931 | if (args == NULL || *args == '\0') |
d77f58be SS |
12932 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
12933 | else | |
e5a67952 | 12934 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 12935 | } |
ad443146 SS |
12936 | |
12937 | default_collect_info (); | |
1042e4c0 SS |
12938 | } |
12939 | ||
4a64f543 | 12940 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
12941 | Not supported by all targets. */ |
12942 | static void | |
12943 | enable_trace_command (char *args, int from_tty) | |
12944 | { | |
12945 | enable_command (args, from_tty); | |
12946 | } | |
12947 | ||
4a64f543 | 12948 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
12949 | Not supported by all targets. */ |
12950 | static void | |
12951 | disable_trace_command (char *args, int from_tty) | |
12952 | { | |
12953 | disable_command (args, from_tty); | |
12954 | } | |
12955 | ||
4a64f543 | 12956 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
12957 | static void |
12958 | delete_trace_command (char *arg, int from_tty) | |
12959 | { | |
35df4500 | 12960 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
12961 | |
12962 | dont_repeat (); | |
12963 | ||
12964 | if (arg == 0) | |
12965 | { | |
12966 | int breaks_to_delete = 0; | |
12967 | ||
12968 | /* Delete all breakpoints if no argument. | |
12969 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
12970 | have to be deleted with an explicit breakpoint number |
12971 | argument. */ | |
1042e4c0 | 12972 | ALL_TRACEPOINTS (b) |
46c6471b | 12973 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
12974 | { |
12975 | breaks_to_delete = 1; | |
12976 | break; | |
12977 | } | |
1042e4c0 SS |
12978 | |
12979 | /* Ask user only if there are some breakpoints to delete. */ | |
12980 | if (!from_tty | |
12981 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
12982 | { | |
35df4500 | 12983 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 12984 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 12985 | delete_breakpoint (b); |
1042e4c0 SS |
12986 | } |
12987 | } | |
12988 | else | |
51be5b68 | 12989 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
12990 | } |
12991 | ||
197f0a60 TT |
12992 | /* Helper function for trace_pass_command. */ |
12993 | ||
12994 | static void | |
d9b3f62e | 12995 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 12996 | { |
d9b3f62e PA |
12997 | tp->pass_count = count; |
12998 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
12999 | if (from_tty) |
13000 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 13001 | tp->base.number, count); |
197f0a60 TT |
13002 | } |
13003 | ||
1042e4c0 SS |
13004 | /* Set passcount for tracepoint. |
13005 | ||
13006 | First command argument is passcount, second is tracepoint number. | |
13007 | If tracepoint number omitted, apply to most recently defined. | |
13008 | Also accepts special argument "all". */ | |
13009 | ||
13010 | static void | |
13011 | trace_pass_command (char *args, int from_tty) | |
13012 | { | |
d9b3f62e | 13013 | struct tracepoint *t1; |
1042e4c0 | 13014 | unsigned int count; |
1042e4c0 SS |
13015 | |
13016 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13017 | error (_("passcount command requires an " |
13018 | "argument (count + optional TP num)")); | |
1042e4c0 | 13019 | |
4a64f543 | 13020 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
13021 | |
13022 | while (*args && isspace ((int) *args)) | |
13023 | args++; | |
13024 | ||
13025 | if (*args && strncasecmp (args, "all", 3) == 0) | |
13026 | { | |
d9b3f62e PA |
13027 | struct breakpoint *b; |
13028 | ||
1042e4c0 | 13029 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
13030 | if (*args) |
13031 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13032 | |
d9b3f62e | 13033 | ALL_TRACEPOINTS (b) |
197f0a60 | 13034 | { |
d9b3f62e | 13035 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
13036 | trace_pass_set_count (t1, count, from_tty); |
13037 | } | |
13038 | } | |
13039 | else if (*args == '\0') | |
1042e4c0 | 13040 | { |
197f0a60 | 13041 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 13042 | if (t1) |
197f0a60 TT |
13043 | trace_pass_set_count (t1, count, from_tty); |
13044 | } | |
13045 | else | |
13046 | { | |
13047 | struct get_number_or_range_state state; | |
13048 | ||
13049 | init_number_or_range (&state, args); | |
13050 | while (!state.finished) | |
1042e4c0 | 13051 | { |
197f0a60 TT |
13052 | t1 = get_tracepoint_by_number (&args, &state, 1); |
13053 | if (t1) | |
13054 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13055 | } |
13056 | } | |
1042e4c0 SS |
13057 | } |
13058 | ||
d9b3f62e | 13059 | struct tracepoint * |
1042e4c0 SS |
13060 | get_tracepoint (int num) |
13061 | { | |
13062 | struct breakpoint *t; | |
13063 | ||
13064 | ALL_TRACEPOINTS (t) | |
13065 | if (t->number == num) | |
d9b3f62e | 13066 | return (struct tracepoint *) t; |
1042e4c0 SS |
13067 | |
13068 | return NULL; | |
13069 | } | |
13070 | ||
d5551862 SS |
13071 | /* Find the tracepoint with the given target-side number (which may be |
13072 | different from the tracepoint number after disconnecting and | |
13073 | reconnecting). */ | |
13074 | ||
d9b3f62e | 13075 | struct tracepoint * |
d5551862 SS |
13076 | get_tracepoint_by_number_on_target (int num) |
13077 | { | |
d9b3f62e | 13078 | struct breakpoint *b; |
d5551862 | 13079 | |
d9b3f62e PA |
13080 | ALL_TRACEPOINTS (b) |
13081 | { | |
13082 | struct tracepoint *t = (struct tracepoint *) b; | |
13083 | ||
13084 | if (t->number_on_target == num) | |
13085 | return t; | |
13086 | } | |
d5551862 SS |
13087 | |
13088 | return NULL; | |
13089 | } | |
13090 | ||
1042e4c0 | 13091 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
13092 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
13093 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 13094 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 13095 | struct tracepoint * |
197f0a60 TT |
13096 | get_tracepoint_by_number (char **arg, |
13097 | struct get_number_or_range_state *state, | |
13098 | int optional_p) | |
1042e4c0 SS |
13099 | { |
13100 | extern int tracepoint_count; | |
13101 | struct breakpoint *t; | |
13102 | int tpnum; | |
13103 | char *instring = arg == NULL ? NULL : *arg; | |
13104 | ||
197f0a60 TT |
13105 | if (state) |
13106 | { | |
13107 | gdb_assert (!state->finished); | |
13108 | tpnum = get_number_or_range (state); | |
13109 | } | |
13110 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
13111 | { |
13112 | if (optional_p) | |
13113 | tpnum = tracepoint_count; | |
13114 | else | |
13115 | error_no_arg (_("tracepoint number")); | |
13116 | } | |
13117 | else | |
197f0a60 | 13118 | tpnum = get_number (arg); |
1042e4c0 SS |
13119 | |
13120 | if (tpnum <= 0) | |
13121 | { | |
13122 | if (instring && *instring) | |
13123 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
13124 | instring); | |
13125 | else | |
3e43a32a MS |
13126 | printf_filtered (_("Tracepoint argument missing " |
13127 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
13128 | return NULL; |
13129 | } | |
13130 | ||
13131 | ALL_TRACEPOINTS (t) | |
13132 | if (t->number == tpnum) | |
13133 | { | |
d9b3f62e | 13134 | return (struct tracepoint *) t; |
1042e4c0 SS |
13135 | } |
13136 | ||
1042e4c0 SS |
13137 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
13138 | return NULL; | |
13139 | } | |
13140 | ||
d9b3f62e PA |
13141 | void |
13142 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
13143 | { | |
13144 | if (b->thread != -1) | |
13145 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
13146 | ||
13147 | if (b->task != 0) | |
13148 | fprintf_unfiltered (fp, " task %d", b->task); | |
13149 | ||
13150 | fprintf_unfiltered (fp, "\n"); | |
13151 | } | |
13152 | ||
6149aea9 PA |
13153 | /* Save information on user settable breakpoints (watchpoints, etc) to |
13154 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
13155 | on each breakpoint and only include the ones for which it returns | |
13156 | non-zero. */ | |
13157 | ||
1042e4c0 | 13158 | static void |
6149aea9 PA |
13159 | save_breakpoints (char *filename, int from_tty, |
13160 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
13161 | { |
13162 | struct breakpoint *tp; | |
6149aea9 | 13163 | int any = 0; |
a7bdde9e | 13164 | char *pathname; |
1042e4c0 | 13165 | struct cleanup *cleanup; |
a7bdde9e | 13166 | struct ui_file *fp; |
6149aea9 | 13167 | int extra_trace_bits = 0; |
1042e4c0 | 13168 | |
6149aea9 PA |
13169 | if (filename == 0 || *filename == 0) |
13170 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
13171 | |
13172 | /* See if we have anything to save. */ | |
6149aea9 | 13173 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13174 | { |
6149aea9 | 13175 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13176 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
13177 | continue; |
13178 | ||
13179 | /* If we have a filter, only save the breakpoints it accepts. */ | |
13180 | if (filter && !filter (tp)) | |
13181 | continue; | |
13182 | ||
13183 | any = 1; | |
13184 | ||
13185 | if (is_tracepoint (tp)) | |
13186 | { | |
13187 | extra_trace_bits = 1; | |
13188 | ||
13189 | /* We can stop searching. */ | |
13190 | break; | |
13191 | } | |
1042e4c0 | 13192 | } |
6149aea9 PA |
13193 | |
13194 | if (!any) | |
1042e4c0 | 13195 | { |
6149aea9 | 13196 | warning (_("Nothing to save.")); |
1042e4c0 SS |
13197 | return; |
13198 | } | |
13199 | ||
6149aea9 | 13200 | pathname = tilde_expand (filename); |
1042e4c0 | 13201 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 13202 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 13203 | if (!fp) |
6149aea9 PA |
13204 | error (_("Unable to open file '%s' for saving (%s)"), |
13205 | filename, safe_strerror (errno)); | |
a7bdde9e | 13206 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 13207 | |
6149aea9 PA |
13208 | if (extra_trace_bits) |
13209 | save_trace_state_variables (fp); | |
8bf6485c | 13210 | |
6149aea9 | 13211 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13212 | { |
6149aea9 | 13213 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13214 | if (!user_breakpoint_p (tp)) |
6149aea9 | 13215 | continue; |
8bf6485c | 13216 | |
6149aea9 PA |
13217 | /* If we have a filter, only save the breakpoints it accepts. */ |
13218 | if (filter && !filter (tp)) | |
13219 | continue; | |
13220 | ||
348d480f | 13221 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 13222 | |
6149aea9 PA |
13223 | /* Note, we can't rely on tp->number for anything, as we can't |
13224 | assume the recreated breakpoint numbers will match. Use $bpnum | |
13225 | instead. */ | |
13226 | ||
13227 | if (tp->cond_string) | |
13228 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
13229 | ||
13230 | if (tp->ignore_count) | |
13231 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
13232 | ||
a7bdde9e | 13233 | if (tp->commands) |
1042e4c0 | 13234 | { |
a7bdde9e VP |
13235 | volatile struct gdb_exception ex; |
13236 | ||
6149aea9 | 13237 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 13238 | |
79a45e25 | 13239 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 13240 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 13241 | { |
79a45e25 | 13242 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 13243 | } |
79a45e25 | 13244 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 13245 | |
a7bdde9e VP |
13246 | if (ex.reason < 0) |
13247 | throw_exception (ex); | |
1042e4c0 | 13248 | |
a7bdde9e | 13249 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 13250 | } |
6149aea9 PA |
13251 | |
13252 | if (tp->enable_state == bp_disabled) | |
13253 | fprintf_unfiltered (fp, "disable\n"); | |
13254 | ||
13255 | /* If this is a multi-location breakpoint, check if the locations | |
13256 | should be individually disabled. Watchpoint locations are | |
13257 | special, and not user visible. */ | |
13258 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
13259 | { | |
13260 | struct bp_location *loc; | |
13261 | int n = 1; | |
13262 | ||
13263 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
13264 | if (!loc->enabled) | |
13265 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
13266 | } | |
1042e4c0 | 13267 | } |
8bf6485c | 13268 | |
6149aea9 | 13269 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
13270 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
13271 | ||
1042e4c0 SS |
13272 | do_cleanups (cleanup); |
13273 | if (from_tty) | |
6149aea9 PA |
13274 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
13275 | } | |
13276 | ||
13277 | /* The `save breakpoints' command. */ | |
13278 | ||
13279 | static void | |
13280 | save_breakpoints_command (char *args, int from_tty) | |
13281 | { | |
13282 | save_breakpoints (args, from_tty, NULL); | |
13283 | } | |
13284 | ||
13285 | /* The `save tracepoints' command. */ | |
13286 | ||
13287 | static void | |
13288 | save_tracepoints_command (char *args, int from_tty) | |
13289 | { | |
13290 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
13291 | } |
13292 | ||
13293 | /* Create a vector of all tracepoints. */ | |
13294 | ||
13295 | VEC(breakpoint_p) * | |
eeae04df | 13296 | all_tracepoints (void) |
1042e4c0 SS |
13297 | { |
13298 | VEC(breakpoint_p) *tp_vec = 0; | |
13299 | struct breakpoint *tp; | |
13300 | ||
13301 | ALL_TRACEPOINTS (tp) | |
13302 | { | |
13303 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
13304 | } | |
13305 | ||
13306 | return tp_vec; | |
13307 | } | |
13308 | ||
c906108c | 13309 | \f |
4a64f543 MS |
13310 | /* This help string is used for the break, hbreak, tbreak and thbreak |
13311 | commands. It is defined as a macro to prevent duplication. | |
13312 | COMMAND should be a string constant containing the name of the | |
13313 | command. */ | |
31e2b00f AS |
13314 | #define BREAK_ARGS_HELP(command) \ |
13315 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
13316 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
13317 | If a line number is specified, break at start of code for that line.\n\ | |
13318 | If a function is specified, break at start of code for that function.\n\ | |
13319 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
13320 | With no LOCATION, uses current execution address of the selected\n\ |
13321 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
13322 | \n\ |
13323 | THREADNUM is the number from \"info threads\".\n\ | |
13324 | CONDITION is a boolean expression.\n\ | |
13325 | \n\ | |
d41c0fc8 PA |
13326 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
13327 | conditions are different.\n\ | |
31e2b00f AS |
13328 | \n\ |
13329 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
13330 | ||
44feb3ce TT |
13331 | /* List of subcommands for "catch". */ |
13332 | static struct cmd_list_element *catch_cmdlist; | |
13333 | ||
13334 | /* List of subcommands for "tcatch". */ | |
13335 | static struct cmd_list_element *tcatch_cmdlist; | |
13336 | ||
9ac4176b | 13337 | void |
44feb3ce TT |
13338 | add_catch_command (char *name, char *docstring, |
13339 | void (*sfunc) (char *args, int from_tty, | |
13340 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
13341 | char **(*completer) (struct cmd_list_element *cmd, |
13342 | char *text, char *word), | |
44feb3ce TT |
13343 | void *user_data_catch, |
13344 | void *user_data_tcatch) | |
13345 | { | |
13346 | struct cmd_list_element *command; | |
13347 | ||
13348 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13349 | &catch_cmdlist); | |
13350 | set_cmd_sfunc (command, sfunc); | |
13351 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 13352 | set_cmd_completer (command, completer); |
44feb3ce TT |
13353 | |
13354 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13355 | &tcatch_cmdlist); | |
13356 | set_cmd_sfunc (command, sfunc); | |
13357 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 13358 | set_cmd_completer (command, completer); |
44feb3ce TT |
13359 | } |
13360 | ||
6c95b8df | 13361 | static void |
a79b8f6e | 13362 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 13363 | { |
6c95b8df PA |
13364 | inf->total_syscalls_count = 0; |
13365 | inf->any_syscall_count = 0; | |
13366 | VEC_free (int, inf->syscalls_counts); | |
13367 | } | |
13368 | ||
6149aea9 PA |
13369 | static void |
13370 | save_command (char *arg, int from_tty) | |
13371 | { | |
3e43a32a MS |
13372 | printf_unfiltered (_("\"save\" must be followed by " |
13373 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
13374 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
13375 | } | |
13376 | ||
84f4c1fe PM |
13377 | struct breakpoint * |
13378 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
13379 | void *data) | |
13380 | { | |
35df4500 | 13381 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 13382 | |
35df4500 | 13383 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
13384 | { |
13385 | if ((*callback) (b, data)) | |
13386 | return b; | |
13387 | } | |
13388 | ||
13389 | return NULL; | |
13390 | } | |
13391 | ||
0574c78f GB |
13392 | /* Zero if any of the breakpoint's locations could be a location where |
13393 | functions have been inlined, nonzero otherwise. */ | |
13394 | ||
13395 | static int | |
13396 | is_non_inline_function (struct breakpoint *b) | |
13397 | { | |
13398 | /* The shared library event breakpoint is set on the address of a | |
13399 | non-inline function. */ | |
13400 | if (b->type == bp_shlib_event) | |
13401 | return 1; | |
13402 | ||
13403 | return 0; | |
13404 | } | |
13405 | ||
13406 | /* Nonzero if the specified PC cannot be a location where functions | |
13407 | have been inlined. */ | |
13408 | ||
13409 | int | |
13410 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc) | |
13411 | { | |
13412 | struct breakpoint *b; | |
13413 | struct bp_location *bl; | |
13414 | ||
13415 | ALL_BREAKPOINTS (b) | |
13416 | { | |
13417 | if (!is_non_inline_function (b)) | |
13418 | continue; | |
13419 | ||
13420 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
13421 | { | |
13422 | if (!bl->shlib_disabled | |
13423 | && bpstat_check_location (bl, aspace, pc)) | |
13424 | return 1; | |
13425 | } | |
13426 | } | |
13427 | ||
13428 | return 0; | |
13429 | } | |
13430 | ||
2060206e PA |
13431 | void |
13432 | initialize_breakpoint_ops (void) | |
13433 | { | |
13434 | static int initialized = 0; | |
13435 | ||
13436 | struct breakpoint_ops *ops; | |
13437 | ||
13438 | if (initialized) | |
13439 | return; | |
13440 | initialized = 1; | |
13441 | ||
13442 | /* The breakpoint_ops structure to be inherit by all kinds of | |
13443 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
13444 | internal and momentary breakpoints, etc.). */ | |
13445 | ops = &bkpt_base_breakpoint_ops; | |
13446 | *ops = base_breakpoint_ops; | |
13447 | ops->re_set = bkpt_re_set; | |
13448 | ops->insert_location = bkpt_insert_location; | |
13449 | ops->remove_location = bkpt_remove_location; | |
13450 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
13451 | ||
13452 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
13453 | ops = &bkpt_breakpoint_ops; | |
13454 | *ops = bkpt_base_breakpoint_ops; | |
13455 | ops->re_set = bkpt_re_set; | |
13456 | ops->resources_needed = bkpt_resources_needed; | |
13457 | ops->print_it = bkpt_print_it; | |
13458 | ops->print_mention = bkpt_print_mention; | |
13459 | ops->print_recreate = bkpt_print_recreate; | |
13460 | ||
13461 | /* Ranged breakpoints. */ | |
13462 | ops = &ranged_breakpoint_ops; | |
13463 | *ops = bkpt_breakpoint_ops; | |
13464 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
13465 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
13466 | ops->print_it = print_it_ranged_breakpoint; | |
13467 | ops->print_one = print_one_ranged_breakpoint; | |
13468 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
13469 | ops->print_mention = print_mention_ranged_breakpoint; | |
13470 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
13471 | ||
13472 | /* Internal breakpoints. */ | |
13473 | ops = &internal_breakpoint_ops; | |
13474 | *ops = bkpt_base_breakpoint_ops; | |
13475 | ops->re_set = internal_bkpt_re_set; | |
13476 | ops->check_status = internal_bkpt_check_status; | |
13477 | ops->print_it = internal_bkpt_print_it; | |
13478 | ops->print_mention = internal_bkpt_print_mention; | |
13479 | ||
13480 | /* Momentary breakpoints. */ | |
13481 | ops = &momentary_breakpoint_ops; | |
13482 | *ops = bkpt_base_breakpoint_ops; | |
13483 | ops->re_set = momentary_bkpt_re_set; | |
13484 | ops->check_status = momentary_bkpt_check_status; | |
13485 | ops->print_it = momentary_bkpt_print_it; | |
13486 | ops->print_mention = momentary_bkpt_print_mention; | |
13487 | ||
13488 | /* GNU v3 exception catchpoints. */ | |
13489 | ops = &gnu_v3_exception_catchpoint_ops; | |
13490 | *ops = bkpt_breakpoint_ops; | |
13491 | ops->print_it = print_it_exception_catchpoint; | |
13492 | ops->print_one = print_one_exception_catchpoint; | |
13493 | ops->print_mention = print_mention_exception_catchpoint; | |
13494 | ops->print_recreate = print_recreate_exception_catchpoint; | |
13495 | ||
13496 | /* Watchpoints. */ | |
13497 | ops = &watchpoint_breakpoint_ops; | |
13498 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 13499 | ops->dtor = dtor_watchpoint; |
2060206e PA |
13500 | ops->re_set = re_set_watchpoint; |
13501 | ops->insert_location = insert_watchpoint; | |
13502 | ops->remove_location = remove_watchpoint; | |
13503 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
13504 | ops->check_status = check_status_watchpoint; | |
13505 | ops->resources_needed = resources_needed_watchpoint; | |
13506 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
13507 | ops->print_it = print_it_watchpoint; | |
13508 | ops->print_mention = print_mention_watchpoint; | |
13509 | ops->print_recreate = print_recreate_watchpoint; | |
13510 | ||
13511 | /* Masked watchpoints. */ | |
13512 | ops = &masked_watchpoint_breakpoint_ops; | |
13513 | *ops = watchpoint_breakpoint_ops; | |
13514 | ops->insert_location = insert_masked_watchpoint; | |
13515 | ops->remove_location = remove_masked_watchpoint; | |
13516 | ops->resources_needed = resources_needed_masked_watchpoint; | |
13517 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
13518 | ops->print_it = print_it_masked_watchpoint; | |
13519 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
13520 | ops->print_mention = print_mention_masked_watchpoint; | |
13521 | ops->print_recreate = print_recreate_masked_watchpoint; | |
13522 | ||
13523 | /* Tracepoints. */ | |
13524 | ops = &tracepoint_breakpoint_ops; | |
13525 | *ops = base_breakpoint_ops; | |
13526 | ops->re_set = tracepoint_re_set; | |
13527 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
13528 | ops->print_one_detail = tracepoint_print_one_detail; | |
13529 | ops->print_mention = tracepoint_print_mention; | |
13530 | ops->print_recreate = tracepoint_print_recreate; | |
13531 | ||
13532 | /* Fork catchpoints. */ | |
13533 | ops = &catch_fork_breakpoint_ops; | |
13534 | *ops = base_breakpoint_ops; | |
13535 | ops->insert_location = insert_catch_fork; | |
13536 | ops->remove_location = remove_catch_fork; | |
13537 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
13538 | ops->print_it = print_it_catch_fork; | |
13539 | ops->print_one = print_one_catch_fork; | |
13540 | ops->print_mention = print_mention_catch_fork; | |
13541 | ops->print_recreate = print_recreate_catch_fork; | |
13542 | ||
13543 | /* Vfork catchpoints. */ | |
13544 | ops = &catch_vfork_breakpoint_ops; | |
13545 | *ops = base_breakpoint_ops; | |
13546 | ops->insert_location = insert_catch_vfork; | |
13547 | ops->remove_location = remove_catch_vfork; | |
13548 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
13549 | ops->print_it = print_it_catch_vfork; | |
13550 | ops->print_one = print_one_catch_vfork; | |
13551 | ops->print_mention = print_mention_catch_vfork; | |
13552 | ops->print_recreate = print_recreate_catch_vfork; | |
13553 | ||
13554 | /* Exec catchpoints. */ | |
13555 | ops = &catch_exec_breakpoint_ops; | |
13556 | *ops = base_breakpoint_ops; | |
13557 | ops->dtor = dtor_catch_exec; | |
13558 | ops->insert_location = insert_catch_exec; | |
13559 | ops->remove_location = remove_catch_exec; | |
13560 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
13561 | ops->print_it = print_it_catch_exec; | |
13562 | ops->print_one = print_one_catch_exec; | |
13563 | ops->print_mention = print_mention_catch_exec; | |
13564 | ops->print_recreate = print_recreate_catch_exec; | |
13565 | ||
13566 | /* Syscall catchpoints. */ | |
13567 | ops = &catch_syscall_breakpoint_ops; | |
13568 | *ops = base_breakpoint_ops; | |
13569 | ops->dtor = dtor_catch_syscall; | |
13570 | ops->insert_location = insert_catch_syscall; | |
13571 | ops->remove_location = remove_catch_syscall; | |
13572 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
13573 | ops->print_it = print_it_catch_syscall; | |
13574 | ops->print_one = print_one_catch_syscall; | |
13575 | ops->print_mention = print_mention_catch_syscall; | |
13576 | ops->print_recreate = print_recreate_catch_syscall; | |
13577 | } | |
13578 | ||
c906108c | 13579 | void |
fba45db2 | 13580 | _initialize_breakpoint (void) |
c906108c SS |
13581 | { |
13582 | struct cmd_list_element *c; | |
13583 | ||
2060206e PA |
13584 | initialize_breakpoint_ops (); |
13585 | ||
84acb35a | 13586 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 13587 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 13588 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 13589 | |
17450429 PP |
13590 | breakpoint_objfile_key = register_objfile_data (); |
13591 | ||
c906108c SS |
13592 | breakpoint_chain = 0; |
13593 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
13594 | before a breakpoint is set. */ | |
13595 | breakpoint_count = 0; | |
13596 | ||
1042e4c0 SS |
13597 | tracepoint_count = 0; |
13598 | ||
1bedd215 AC |
13599 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
13600 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
13601 | Usage is `ignore N COUNT'.")); | |
c906108c | 13602 | if (xdb_commands) |
c5aa993b | 13603 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 13604 | |
1bedd215 AC |
13605 | add_com ("commands", class_breakpoint, commands_command, _("\ |
13606 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
13607 | Give breakpoint number as argument after \"commands\".\n\ |
13608 | With no argument, the targeted breakpoint is the last one set.\n\ | |
13609 | The commands themselves follow starting on the next line.\n\ | |
13610 | Type a line containing \"end\" to indicate the end of them.\n\ | |
13611 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 13612 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 13613 | |
1bedd215 AC |
13614 | add_com ("condition", class_breakpoint, condition_command, _("\ |
13615 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 13616 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 13617 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 13618 | |
1bedd215 | 13619 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 13620 | Set a temporary breakpoint.\n\ |
c906108c SS |
13621 | Like \"break\" except the breakpoint is only temporary,\n\ |
13622 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
13623 | by using \"enable delete\" on the breakpoint number.\n\ |
13624 | \n" | |
13625 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 13626 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13627 | |
1bedd215 | 13628 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 13629 | Set a hardware assisted breakpoint.\n\ |
c906108c | 13630 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
13631 | some target hardware may not have this support.\n\ |
13632 | \n" | |
13633 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 13634 | set_cmd_completer (c, location_completer); |
c906108c | 13635 | |
1bedd215 | 13636 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 13637 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 13638 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
13639 | so it will be deleted when hit.\n\ |
13640 | \n" | |
13641 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 13642 | set_cmd_completer (c, location_completer); |
c906108c | 13643 | |
1bedd215 AC |
13644 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
13645 | Enable some breakpoints.\n\ | |
c906108c SS |
13646 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13647 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13648 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13649 | With a subcommand you can enable temporarily."), |
c906108c SS |
13650 | &enablelist, "enable ", 1, &cmdlist); |
13651 | if (xdb_commands) | |
1bedd215 AC |
13652 | add_com ("ab", class_breakpoint, enable_command, _("\ |
13653 | Enable some breakpoints.\n\ | |
c906108c SS |
13654 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13655 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13656 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13657 | With a subcommand you can enable temporarily.")); |
c906108c SS |
13658 | |
13659 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
13660 | ||
84951ab5 | 13661 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 13662 | Enable some breakpoints.\n\ |
c906108c SS |
13663 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13664 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13665 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 13666 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 13667 | |
1a966eab AC |
13668 | add_cmd ("once", no_class, enable_once_command, _("\ |
13669 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13670 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13671 | &enablebreaklist); |
13672 | ||
1a966eab AC |
13673 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13674 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13675 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13676 | &enablebreaklist); |
13677 | ||
1a966eab AC |
13678 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13679 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13680 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13681 | &enablelist); |
13682 | ||
1a966eab AC |
13683 | add_cmd ("once", no_class, enable_once_command, _("\ |
13684 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13685 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13686 | &enablelist); |
13687 | ||
1bedd215 AC |
13688 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
13689 | Disable some breakpoints.\n\ | |
c906108c SS |
13690 | Arguments are breakpoint numbers with spaces in between.\n\ |
13691 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13692 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
13693 | &disablelist, "disable ", 1, &cmdlist); |
13694 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
13695 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
13696 | if (xdb_commands) | |
1bedd215 AC |
13697 | add_com ("sb", class_breakpoint, disable_command, _("\ |
13698 | Disable some breakpoints.\n\ | |
c906108c SS |
13699 | Arguments are breakpoint numbers with spaces in between.\n\ |
13700 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13701 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 13702 | |
1a966eab AC |
13703 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
13704 | Disable some breakpoints.\n\ | |
c906108c SS |
13705 | Arguments are breakpoint numbers with spaces in between.\n\ |
13706 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13707 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 13708 | This command may be abbreviated \"disable\"."), |
c906108c SS |
13709 | &disablelist); |
13710 | ||
1bedd215 AC |
13711 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
13712 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13713 | Arguments are breakpoint numbers with spaces in between.\n\ |
13714 | To delete all breakpoints, give no argument.\n\ | |
13715 | \n\ | |
13716 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 13717 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
13718 | &deletelist, "delete ", 1, &cmdlist); |
13719 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 13720 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 13721 | if (xdb_commands) |
1bedd215 AC |
13722 | add_com ("db", class_breakpoint, delete_command, _("\ |
13723 | Delete some breakpoints.\n\ | |
c906108c | 13724 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 13725 | To delete all breakpoints, give no argument.\n")); |
c906108c | 13726 | |
1a966eab AC |
13727 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
13728 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13729 | Arguments are breakpoint numbers with spaces in between.\n\ |
13730 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 13731 | This command may be abbreviated \"delete\"."), |
c906108c SS |
13732 | &deletelist); |
13733 | ||
1bedd215 AC |
13734 | add_com ("clear", class_breakpoint, clear_command, _("\ |
13735 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
13736 | Argument may be line number, function name, or \"*\" and an address.\n\ |
13737 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
13738 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
13739 | If an address is specified, breakpoints at that address are cleared.\n\ |
13740 | \n\ | |
13741 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
13742 | is executing in.\n\ |
13743 | \n\ | |
1bedd215 | 13744 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 13745 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 13746 | |
1bedd215 | 13747 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
13748 | Set breakpoint at specified line or function.\n" |
13749 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 13750 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13751 | |
c906108c SS |
13752 | add_com_alias ("b", "break", class_run, 1); |
13753 | add_com_alias ("br", "break", class_run, 1); | |
13754 | add_com_alias ("bre", "break", class_run, 1); | |
13755 | add_com_alias ("brea", "break", class_run, 1); | |
13756 | ||
7681d515 PM |
13757 | if (xdb_commands) |
13758 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
13759 | |
13760 | if (dbx_commands) | |
13761 | { | |
1bedd215 AC |
13762 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
13763 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
13764 | &stoplist, "stop ", 1, &cmdlist); |
13765 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 13766 | _("Break in function or address."), &stoplist); |
c5aa993b | 13767 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 13768 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
13769 | add_com ("status", class_info, breakpoints_info, _("\ |
13770 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13771 | The \"Type\" column indicates one of:\n\ |
13772 | \tbreakpoint - normal breakpoint\n\ | |
13773 | \twatchpoint - watchpoint\n\ | |
13774 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13775 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13776 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13777 | address and file/line number respectively.\n\ |
13778 | \n\ | |
13779 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13780 | are set to the address of the last breakpoint listed unless the command\n\ |
13781 | is prefixed with \"server \".\n\n\ | |
c906108c | 13782 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13783 | breakpoint set.")); |
c906108c SS |
13784 | } |
13785 | ||
1bedd215 | 13786 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 13787 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
13788 | The \"Type\" column indicates one of:\n\ |
13789 | \tbreakpoint - normal breakpoint\n\ | |
13790 | \twatchpoint - watchpoint\n\ | |
13791 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13792 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13793 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13794 | address and file/line number respectively.\n\ |
13795 | \n\ | |
13796 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13797 | are set to the address of the last breakpoint listed unless the command\n\ |
13798 | is prefixed with \"server \".\n\n\ | |
c906108c | 13799 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13800 | breakpoint set.")); |
c906108c | 13801 | |
6b04bdb7 MS |
13802 | add_info_alias ("b", "breakpoints", 1); |
13803 | ||
c906108c | 13804 | if (xdb_commands) |
1bedd215 AC |
13805 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
13806 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13807 | The \"Type\" column indicates one of:\n\ |
13808 | \tbreakpoint - normal breakpoint\n\ | |
13809 | \twatchpoint - watchpoint\n\ | |
13810 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13811 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13812 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13813 | address and file/line number respectively.\n\ |
13814 | \n\ | |
13815 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13816 | are set to the address of the last breakpoint listed unless the command\n\ |
13817 | is prefixed with \"server \".\n\n\ | |
c906108c | 13818 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13819 | breakpoint set.")); |
c906108c | 13820 | |
1a966eab AC |
13821 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
13822 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13823 | The \"Type\" column indicates one of:\n\ |
13824 | \tbreakpoint - normal breakpoint\n\ | |
13825 | \twatchpoint - watchpoint\n\ | |
13826 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
13827 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
13828 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
13829 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
13830 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
13831 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
13832 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
13833 | address and file/line number respectively.\n\ |
13834 | \n\ | |
13835 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13836 | are set to the address of the last breakpoint listed unless the command\n\ |
13837 | is prefixed with \"server \".\n\n\ | |
c906108c | 13838 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 13839 | breakpoint set."), |
c906108c SS |
13840 | &maintenanceinfolist); |
13841 | ||
44feb3ce TT |
13842 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
13843 | Set catchpoints to catch events."), | |
13844 | &catch_cmdlist, "catch ", | |
13845 | 0/*allow-unknown*/, &cmdlist); | |
13846 | ||
13847 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
13848 | Set temporary catchpoints to catch events."), | |
13849 | &tcatch_cmdlist, "tcatch ", | |
13850 | 0/*allow-unknown*/, &cmdlist); | |
13851 | ||
13852 | /* Add catch and tcatch sub-commands. */ | |
13853 | add_catch_command ("catch", _("\ | |
13854 | Catch an exception, when caught.\n\ | |
13855 | With an argument, catch only exceptions with the given name."), | |
13856 | catch_catch_command, | |
a96d9b2e | 13857 | NULL, |
44feb3ce TT |
13858 | CATCH_PERMANENT, |
13859 | CATCH_TEMPORARY); | |
13860 | add_catch_command ("throw", _("\ | |
13861 | Catch an exception, when thrown.\n\ | |
13862 | With an argument, catch only exceptions with the given name."), | |
13863 | catch_throw_command, | |
a96d9b2e | 13864 | NULL, |
44feb3ce TT |
13865 | CATCH_PERMANENT, |
13866 | CATCH_TEMPORARY); | |
13867 | add_catch_command ("fork", _("Catch calls to fork."), | |
13868 | catch_fork_command_1, | |
a96d9b2e | 13869 | NULL, |
44feb3ce TT |
13870 | (void *) (uintptr_t) catch_fork_permanent, |
13871 | (void *) (uintptr_t) catch_fork_temporary); | |
13872 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
13873 | catch_fork_command_1, | |
a96d9b2e | 13874 | NULL, |
44feb3ce TT |
13875 | (void *) (uintptr_t) catch_vfork_permanent, |
13876 | (void *) (uintptr_t) catch_vfork_temporary); | |
13877 | add_catch_command ("exec", _("Catch calls to exec."), | |
13878 | catch_exec_command_1, | |
a96d9b2e SDJ |
13879 | NULL, |
13880 | CATCH_PERMANENT, | |
13881 | CATCH_TEMPORARY); | |
13882 | add_catch_command ("syscall", _("\ | |
13883 | Catch system calls by their names and/or numbers.\n\ | |
13884 | Arguments say which system calls to catch. If no arguments\n\ | |
13885 | are given, every system call will be caught.\n\ | |
13886 | Arguments, if given, should be one or more system call names\n\ | |
13887 | (if your system supports that), or system call numbers."), | |
13888 | catch_syscall_command_1, | |
13889 | catch_syscall_completer, | |
44feb3ce TT |
13890 | CATCH_PERMANENT, |
13891 | CATCH_TEMPORARY); | |
c5aa993b | 13892 | |
1bedd215 AC |
13893 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
13894 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13895 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 13896 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13897 | an expression changes.\n\ |
13898 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13899 | the memory to which it refers.")); | |
65d12d83 | 13900 | set_cmd_completer (c, expression_completer); |
c906108c | 13901 | |
1bedd215 AC |
13902 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
13903 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 13904 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 13905 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13906 | an expression is read.\n\ |
13907 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13908 | the memory to which it refers.")); | |
65d12d83 | 13909 | set_cmd_completer (c, expression_completer); |
c906108c | 13910 | |
1bedd215 AC |
13911 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
13912 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13913 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 13914 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13915 | an expression is either read or written.\n\ |
13916 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13917 | the memory to which it refers.")); | |
65d12d83 | 13918 | set_cmd_completer (c, expression_completer); |
c906108c | 13919 | |
d77f58be | 13920 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 13921 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 13922 | |
920d2a44 AC |
13923 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
13924 | respond to changes - contrary to the description. */ | |
85c07804 AC |
13925 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
13926 | &can_use_hw_watchpoints, _("\ | |
13927 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
13928 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
13929 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
13930 | such is available. (However, any hardware watchpoints that were\n\ | |
13931 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
13932 | hardware.)"), |
13933 | NULL, | |
920d2a44 | 13934 | show_can_use_hw_watchpoints, |
85c07804 | 13935 | &setlist, &showlist); |
c906108c SS |
13936 | |
13937 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 13938 | |
1042e4c0 SS |
13939 | /* Tracepoint manipulation commands. */ |
13940 | ||
13941 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
13942 | Set a tracepoint at specified line or function.\n\ | |
13943 | \n" | |
13944 | BREAK_ARGS_HELP ("trace") "\n\ | |
13945 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13946 | set_cmd_completer (c, location_completer); | |
13947 | ||
13948 | add_com_alias ("tp", "trace", class_alias, 0); | |
13949 | add_com_alias ("tr", "trace", class_alias, 1); | |
13950 | add_com_alias ("tra", "trace", class_alias, 1); | |
13951 | add_com_alias ("trac", "trace", class_alias, 1); | |
13952 | ||
7a697b8d SS |
13953 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
13954 | Set a fast tracepoint at specified line or function.\n\ | |
13955 | \n" | |
13956 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
13957 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13958 | set_cmd_completer (c, location_completer); | |
13959 | ||
0fb4aa4b PA |
13960 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
13961 | Set a static tracepoint at specified line, function or marker.\n\ | |
13962 | \n\ | |
13963 | strace [LOCATION] [if CONDITION]\n\ | |
13964 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
13965 | or -m MARKER_ID.\n\ | |
13966 | If a line number is specified, probe the marker at start of code\n\ | |
13967 | for that line. If a function is specified, probe the marker at start\n\ | |
13968 | of code for that function. If an address is specified, probe the marker\n\ | |
13969 | at that exact address. If a marker id is specified, probe the marker\n\ | |
13970 | with that name. With no LOCATION, uses current execution address of\n\ | |
13971 | the selected stack frame.\n\ | |
13972 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
13973 | This collects arbitrary user data passed in the probe point call to the\n\ | |
13974 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
13975 | by printing the $_sdata variable like any other convenience variable.\n\ | |
13976 | \n\ | |
13977 | CONDITION is a boolean expression.\n\ | |
13978 | \n\ | |
d41c0fc8 PA |
13979 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
13980 | conditions are different.\n\ | |
0fb4aa4b PA |
13981 | \n\ |
13982 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
13983 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13984 | set_cmd_completer (c, location_completer); | |
13985 | ||
1042e4c0 | 13986 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 13987 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
13988 | Convenience variable \"$tpnum\" contains the number of the\n\ |
13989 | last tracepoint set.")); | |
13990 | ||
13991 | add_info_alias ("tp", "tracepoints", 1); | |
13992 | ||
13993 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
13994 | Delete specified tracepoints.\n\ | |
13995 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13996 | No argument means delete all tracepoints."), | |
13997 | &deletelist); | |
13998 | ||
13999 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14000 | Disable specified tracepoints.\n\ | |
14001 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14002 | No argument means disable all tracepoints."), | |
14003 | &disablelist); | |
14004 | deprecate_cmd (c, "disable"); | |
14005 | ||
14006 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14007 | Enable specified tracepoints.\n\ | |
14008 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14009 | No argument means enable all tracepoints."), | |
14010 | &enablelist); | |
14011 | deprecate_cmd (c, "enable"); | |
14012 | ||
14013 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14014 | Set the passcount for a tracepoint.\n\ | |
14015 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14016 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14017 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14018 | ||
6149aea9 PA |
14019 | add_prefix_cmd ("save", class_breakpoint, save_command, |
14020 | _("Save breakpoint definitions as a script."), | |
14021 | &save_cmdlist, "save ", | |
14022 | 0/*allow-unknown*/, &cmdlist); | |
14023 | ||
14024 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14025 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14026 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14027 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14028 | session to restore them."), | |
14029 | &save_cmdlist); | |
14030 | set_cmd_completer (c, filename_completer); | |
14031 | ||
14032 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14033 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14034 | Use the 'source' command in another debug session to restore them."), |
14035 | &save_cmdlist); | |
1042e4c0 SS |
14036 | set_cmd_completer (c, filename_completer); |
14037 | ||
6149aea9 PA |
14038 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
14039 | deprecate_cmd (c, "save tracepoints"); | |
14040 | ||
1bedd215 | 14041 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14042 | Breakpoint specific settings\n\ |
14043 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14044 | pending breakpoint behavior"), |
fa8d40ab JJ |
14045 | &breakpoint_set_cmdlist, "set breakpoint ", |
14046 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 14047 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14048 | Breakpoint specific settings\n\ |
14049 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14050 | pending breakpoint behavior"), |
fa8d40ab JJ |
14051 | &breakpoint_show_cmdlist, "show breakpoint ", |
14052 | 0/*allow-unknown*/, &showlist); | |
14053 | ||
7915a72c AC |
14054 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14055 | &pending_break_support, _("\ | |
14056 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14057 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14058 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14059 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14060 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14061 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14062 | NULL, |
920d2a44 | 14063 | show_pending_break_support, |
6e1d7d6c AC |
14064 | &breakpoint_set_cmdlist, |
14065 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14066 | |
14067 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14068 | |
14069 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14070 | &automatic_hardware_breakpoints, _("\ | |
14071 | Set automatic usage of hardware breakpoints."), _("\ | |
14072 | Show automatic usage of hardware breakpoints."), _("\ | |
14073 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14074 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14075 | a warning will be emitted for such breakpoints."), | |
14076 | NULL, | |
14077 | show_automatic_hardware_breakpoints, | |
14078 | &breakpoint_set_cmdlist, | |
14079 | &breakpoint_show_cmdlist); | |
74960c60 | 14080 | |
33e5cbd6 PA |
14081 | add_setshow_enum_cmd ("always-inserted", class_support, |
14082 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
14083 | Set mode for inserting breakpoints."), _("\ |
14084 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
14085 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
14086 | resumed, and removed when execution stops. When this mode is on,\n\ | |
14087 | breakpoints are inserted immediately and removed only when the user\n\ | |
14088 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
14089 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
14090 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
14091 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
14092 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
14093 | NULL, |
14094 | &show_always_inserted_mode, | |
14095 | &breakpoint_set_cmdlist, | |
14096 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
14097 | |
14098 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
14099 | Set a breakpoint for an address range.\n\ | |
14100 | break-range START-LOCATION, END-LOCATION\n\ | |
14101 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14102 | LINENUM, for that line in the current file,\n\ | |
14103 | FILE:LINENUM, for that line in that file,\n\ | |
14104 | +OFFSET, for that number of lines after the current line\n\ | |
14105 | or the start of the range\n\ | |
14106 | FUNCTION, for the first line in that function,\n\ | |
14107 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14108 | *ADDRESS, for the instruction at that address.\n\ | |
14109 | \n\ | |
14110 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14111 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14112 | range (including START-LOCATION and END-LOCATION).")); | |
14113 | ||
765dc015 | 14114 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
14115 | |
14116 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 14117 | } |