Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
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 DJ |
1051 | void |
1052 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1053 | { |
4a64f543 MS |
1054 | /* Left boundary, right boundary and median element of our binary |
1055 | search. */ | |
876fa593 JK |
1056 | unsigned bc_l, bc_r, bc; |
1057 | ||
4a64f543 MS |
1058 | /* Find BC_L which is a leftmost element which may affect BUF |
1059 | content. It is safe to report lower value but a failure to | |
1060 | report higher one. */ | |
876fa593 JK |
1061 | |
1062 | bc_l = 0; | |
1063 | bc_r = bp_location_count; | |
1064 | while (bc_l + 1 < bc_r) | |
1065 | { | |
35df4500 | 1066 | struct bp_location *bl; |
876fa593 JK |
1067 | |
1068 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1069 | bl = bp_location[bc]; |
876fa593 | 1070 | |
4a64f543 MS |
1071 | /* Check first BL->ADDRESS will not overflow due to the added |
1072 | constant. Then advance the left boundary only if we are sure | |
1073 | the BC element can in no way affect the BUF content (MEMADDR | |
1074 | to MEMADDR + LEN range). | |
876fa593 | 1075 | |
4a64f543 MS |
1076 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1077 | offset so that we cannot miss a breakpoint with its shadow | |
1078 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1079 | |
35df4500 TJB |
1080 | if ((bl->address + bp_location_shadow_len_after_address_max |
1081 | >= bl->address) | |
1082 | && (bl->address + bp_location_shadow_len_after_address_max | |
1083 | <= memaddr)) | |
876fa593 JK |
1084 | bc_l = bc; |
1085 | else | |
1086 | bc_r = bc; | |
1087 | } | |
1088 | ||
128070bb PA |
1089 | /* Due to the binary search above, we need to make sure we pick the |
1090 | first location that's at BC_L's address. E.g., if there are | |
1091 | multiple locations at the same address, BC_L may end up pointing | |
1092 | at a duplicate location, and miss the "master"/"inserted" | |
1093 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1094 | B: | |
1095 | ||
1096 | L1@A, L2@A, L3@B, ... | |
1097 | ||
1098 | BC_L could end up pointing at location L2, while the "master" | |
1099 | location could be L1. Since the `loc->inserted' flag is only set | |
1100 | on "master" locations, we'd forget to restore the shadow of L1 | |
1101 | and L2. */ | |
1102 | while (bc_l > 0 | |
1103 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1104 | bc_l--; | |
1105 | ||
876fa593 JK |
1106 | /* Now do full processing of the found relevant range of elements. */ |
1107 | ||
1108 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1109 | { |
35df4500 | 1110 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1111 | CORE_ADDR bp_addr = 0; |
1112 | int bp_size = 0; | |
1113 | int bptoffset = 0; | |
1114 | ||
35df4500 TJB |
1115 | /* bp_location array has BL->OWNER always non-NULL. */ |
1116 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1117 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1118 | bl->owner->number); |
ffce0d52 | 1119 | |
e5dd4106 | 1120 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1121 | content. */ |
1122 | ||
35df4500 TJB |
1123 | if (bl->address >= bp_location_placed_address_before_address_max |
1124 | && memaddr + len <= (bl->address | |
1125 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1126 | break; |
1127 | ||
35df4500 | 1128 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1129 | continue; |
35df4500 | 1130 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1131 | current_program_space->aspace, 0)) |
1132 | continue; | |
1133 | ||
c5aa993b JM |
1134 | /* Addresses and length of the part of the breakpoint that |
1135 | we need to copy. */ | |
35df4500 TJB |
1136 | bp_addr = bl->target_info.placed_address; |
1137 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1138 | |
c5aa993b JM |
1139 | if (bp_addr + bp_size <= memaddr) |
1140 | /* The breakpoint is entirely before the chunk of memory we | |
1141 | are reading. */ | |
1142 | continue; | |
8defab1a | 1143 | |
c5aa993b JM |
1144 | if (bp_addr >= memaddr + len) |
1145 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1146 | reading. */ |
c5aa993b | 1147 | continue; |
c5aa993b | 1148 | |
8defab1a DJ |
1149 | /* Offset within shadow_contents. */ |
1150 | if (bp_addr < memaddr) | |
1151 | { | |
1152 | /* Only copy the second part of the breakpoint. */ | |
1153 | bp_size -= memaddr - bp_addr; | |
1154 | bptoffset = memaddr - bp_addr; | |
1155 | bp_addr = memaddr; | |
1156 | } | |
c5aa993b | 1157 | |
8defab1a DJ |
1158 | if (bp_addr + bp_size > memaddr + len) |
1159 | { | |
1160 | /* Only copy the first part of the breakpoint. */ | |
1161 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1162 | } | |
c5aa993b | 1163 | |
8defab1a | 1164 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1165 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1166 | } |
c906108c | 1167 | } |
c906108c | 1168 | \f |
c5aa993b | 1169 | |
60e1c644 PA |
1170 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1171 | ||
a5606eee | 1172 | static int |
d77f58be | 1173 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1174 | { |
1175 | return (bpt->type == bp_hardware_watchpoint | |
1176 | || bpt->type == bp_read_watchpoint | |
1177 | || bpt->type == bp_access_watchpoint); | |
1178 | } | |
7270d8f2 | 1179 | |
60e1c644 PA |
1180 | /* Return true if BPT is of any watchpoint kind, hardware or |
1181 | software. */ | |
1182 | ||
3a5c3e22 | 1183 | int |
d77f58be | 1184 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1185 | { |
1186 | return (is_hardware_watchpoint (bpt) | |
1187 | || bpt->type == bp_watchpoint); | |
1188 | } | |
1189 | ||
3a5c3e22 PA |
1190 | /* Returns true if the current thread and its running state are safe |
1191 | to evaluate or update watchpoint B. Watchpoints on local | |
1192 | expressions need to be evaluated in the context of the thread that | |
1193 | was current when the watchpoint was created, and, that thread needs | |
1194 | to be stopped to be able to select the correct frame context. | |
1195 | Watchpoints on global expressions can be evaluated on any thread, | |
1196 | and in any state. It is presently left to the target allowing | |
1197 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1198 | |
1199 | static int | |
3a5c3e22 | 1200 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 PA |
1201 | { |
1202 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1203 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1204 | && !is_executing (inferior_ptid))); | |
1205 | } | |
1206 | ||
d0fb5eae JK |
1207 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1208 | associated bp_watchpoint_scope breakpoint. */ | |
1209 | ||
1210 | static void | |
3a5c3e22 | 1211 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1212 | { |
3a5c3e22 | 1213 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1214 | |
1215 | if (b->related_breakpoint != b) | |
1216 | { | |
1217 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1218 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1219 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1220 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1221 | b->related_breakpoint = b; | |
1222 | } | |
1223 | b->disposition = disp_del_at_next_stop; | |
1224 | } | |
1225 | ||
567e1b4e JB |
1226 | /* Assuming that B is a watchpoint: |
1227 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1228 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1229 | - Evaluate the condition if there is one, and store the result |
1230 | in b->loc->cond. | |
a5606eee VP |
1231 | - Update the list of values that must be watched in B->loc. |
1232 | ||
4a64f543 MS |
1233 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1234 | nothing. If this is local watchpoint that is out of scope, delete | |
1235 | it. | |
1236 | ||
1237 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1238 | removed + inserted on each stop here. Normal breakpoints must | |
1239 | never be removed because they might be missed by a running thread | |
1240 | when debugging in non-stop mode. On the other hand, hardware | |
1241 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1242 | to each LWP since they are stored in each LWP's hardware debug | |
1243 | registers. Therefore, such LWP must be stopped first in order to | |
1244 | be able to modify its hardware watchpoints. | |
1245 | ||
1246 | Hardware watchpoints must be reset exactly once after being | |
1247 | presented to the user. It cannot be done sooner, because it would | |
1248 | reset the data used to present the watchpoint hit to the user. And | |
1249 | it must not be done later because it could display the same single | |
1250 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1251 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1252 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1253 | not user-visible - its hit is suppressed if the memory content has | |
1254 | not changed. | |
1255 | ||
1256 | The following constraints influence the location where we can reset | |
1257 | hardware watchpoints: | |
1258 | ||
1259 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1260 | called several times when GDB stops. | |
1261 | ||
1262 | [linux] | |
1263 | * Multiple hardware watchpoints can be hit at the same time, | |
1264 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1265 | hit at a time as the reason for stopping, and all the other hits | |
1266 | are presented later, one after the other, each time the user | |
1267 | requests the execution to be resumed. Execution is not resumed | |
1268 | for the threads still having pending hit event stored in | |
1269 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1270 | the inferior on the first stop the thread hit event is kept being | |
1271 | reported from its cached value by linux_nat_stopped_data_address | |
1272 | until the real thread resume happens after the watchpoint gets | |
1273 | presented and thus its LWP_INFO->STATUS gets reset. | |
1274 | ||
1275 | Therefore the hardware watchpoint hit can get safely reset on the | |
1276 | watchpoint removal from inferior. */ | |
a79d3c27 | 1277 | |
b40ce68a | 1278 | static void |
3a5c3e22 | 1279 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1280 | { |
a5606eee | 1281 | int within_current_scope; |
a5606eee | 1282 | struct frame_id saved_frame_id; |
66076460 | 1283 | int frame_saved; |
a5606eee | 1284 | |
f6bc2008 PA |
1285 | /* If this is a local watchpoint, we only want to check if the |
1286 | watchpoint frame is in scope if the current thread is the thread | |
1287 | that was used to create the watchpoint. */ | |
1288 | if (!watchpoint_in_thread_scope (b)) | |
1289 | return; | |
1290 | ||
3a5c3e22 | 1291 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1292 | return; |
1293 | ||
66076460 | 1294 | frame_saved = 0; |
a5606eee VP |
1295 | |
1296 | /* Determine if the watchpoint is within scope. */ | |
1297 | if (b->exp_valid_block == NULL) | |
1298 | within_current_scope = 1; | |
1299 | else | |
1300 | { | |
b5db5dfc UW |
1301 | struct frame_info *fi = get_current_frame (); |
1302 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1303 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1304 | ||
1305 | /* If we're in a function epilogue, unwinding may not work | |
1306 | properly, so do not attempt to recreate locations at this | |
1307 | point. See similar comments in watchpoint_check. */ | |
1308 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1309 | return; | |
66076460 DJ |
1310 | |
1311 | /* Save the current frame's ID so we can restore it after | |
1312 | evaluating the watchpoint expression on its own frame. */ | |
1313 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1314 | took a frame parameter, so that we didn't have to change the | |
1315 | selected frame. */ | |
1316 | frame_saved = 1; | |
1317 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1318 | ||
a5606eee VP |
1319 | fi = frame_find_by_id (b->watchpoint_frame); |
1320 | within_current_scope = (fi != NULL); | |
1321 | if (within_current_scope) | |
1322 | select_frame (fi); | |
1323 | } | |
1324 | ||
b5db5dfc UW |
1325 | /* We don't free locations. They are stored in the bp_location array |
1326 | and update_global_location_list will eventually delete them and | |
1327 | remove breakpoints if needed. */ | |
3a5c3e22 | 1328 | b->base.loc = NULL; |
b5db5dfc | 1329 | |
a5606eee VP |
1330 | if (within_current_scope && reparse) |
1331 | { | |
1332 | char *s; | |
d63d0675 | 1333 | |
a5606eee VP |
1334 | if (b->exp) |
1335 | { | |
1336 | xfree (b->exp); | |
1337 | b->exp = NULL; | |
1338 | } | |
d63d0675 | 1339 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1340 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1341 | /* If the meaning of expression itself changed, the old value is | |
1342 | no longer relevant. We don't want to report a watchpoint hit | |
1343 | to the user when the old value and the new value may actually | |
1344 | be completely different objects. */ | |
1345 | value_free (b->val); | |
fa4727a6 DJ |
1346 | b->val = NULL; |
1347 | b->val_valid = 0; | |
60e1c644 PA |
1348 | |
1349 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1350 | expression is stored in the breakpoint object, not in the | |
1351 | locations (re)created below. */ | |
3a5c3e22 | 1352 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1353 | { |
1354 | if (b->cond_exp != NULL) | |
1355 | { | |
1356 | xfree (b->cond_exp); | |
1357 | b->cond_exp = NULL; | |
1358 | } | |
1359 | ||
3a5c3e22 | 1360 | s = b->base.cond_string; |
60e1c644 PA |
1361 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); |
1362 | } | |
a5606eee | 1363 | } |
a5606eee VP |
1364 | |
1365 | /* If we failed to parse the expression, for example because | |
1366 | it refers to a global variable in a not-yet-loaded shared library, | |
1367 | don't try to insert watchpoint. We don't automatically delete | |
1368 | such watchpoint, though, since failure to parse expression | |
1369 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1370 | if ( !target_has_execution) |
1371 | { | |
1372 | /* Without execution, memory can't change. No use to try and | |
1373 | set watchpoint locations. The watchpoint will be reset when | |
1374 | the target gains execution, through breakpoint_re_set. */ | |
1375 | } | |
1376 | else if (within_current_scope && b->exp) | |
a5606eee | 1377 | { |
0cf6dd15 | 1378 | int pc = 0; |
fa4727a6 | 1379 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1380 | struct program_space *frame_pspace; |
a5606eee | 1381 | |
0cf6dd15 | 1382 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1383 | |
a5606eee VP |
1384 | /* Avoid setting b->val if it's already set. The meaning of |
1385 | b->val is 'the last value' user saw, and we should update | |
1386 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1387 | happens, the code that reports it updates b->val directly. |
1388 | We don't keep track of the memory value for masked | |
1389 | watchpoints. */ | |
3a5c3e22 | 1390 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1391 | { |
1392 | b->val = v; | |
1393 | b->val_valid = 1; | |
1394 | } | |
a5606eee | 1395 | |
2d134ed3 PA |
1396 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1397 | ||
a5606eee | 1398 | /* Look at each value on the value chain. */ |
9fa40276 | 1399 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1400 | { |
1401 | /* If it's a memory location, and GDB actually needed | |
1402 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1403 | must watch it. If the first value returned is |
1404 | still lazy, that means an error occurred reading it; | |
1405 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1406 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1407 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1408 | { |
1409 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1410 | |
a5606eee VP |
1411 | /* We only watch structs and arrays if user asked |
1412 | for it explicitly, never if they just happen to | |
1413 | appear in the middle of some value chain. */ | |
fa4727a6 | 1414 | if (v == result |
a5606eee VP |
1415 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1416 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1417 | { | |
1418 | CORE_ADDR addr; | |
1419 | int len, type; | |
1420 | struct bp_location *loc, **tmp; | |
1421 | ||
42ae5230 | 1422 | addr = value_address (v); |
a5606eee VP |
1423 | len = TYPE_LENGTH (value_type (v)); |
1424 | type = hw_write; | |
3a5c3e22 | 1425 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1426 | type = hw_read; |
3a5c3e22 | 1427 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1428 | type = hw_access; |
3a5c3e22 PA |
1429 | |
1430 | loc = allocate_bp_location (&b->base); | |
1431 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1432 | ; |
1433 | *tmp = loc; | |
a6d9a66e | 1434 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1435 | |
1436 | loc->pspace = frame_pspace; | |
a5606eee VP |
1437 | loc->address = addr; |
1438 | loc->length = len; | |
1439 | loc->watchpoint_type = type; | |
1440 | } | |
1441 | } | |
9fa40276 TJB |
1442 | } |
1443 | ||
1444 | /* Change the type of breakpoint between hardware assisted or | |
1445 | an ordinary watchpoint depending on the hardware support | |
1446 | and free hardware slots. REPARSE is set when the inferior | |
1447 | is started. */ | |
a9634178 | 1448 | if (reparse) |
9fa40276 | 1449 | { |
e09342b5 | 1450 | int reg_cnt; |
9fa40276 TJB |
1451 | enum bp_loc_type loc_type; |
1452 | struct bp_location *bl; | |
a5606eee | 1453 | |
a9634178 | 1454 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1455 | |
1456 | if (reg_cnt) | |
9fa40276 TJB |
1457 | { |
1458 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1459 | enum bptype type; |
9fa40276 | 1460 | |
a9634178 TJB |
1461 | /* Use an exact watchpoint when there's only one memory region to be |
1462 | watched, and only one debug register is needed to watch it. */ | |
1463 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1464 | ||
9fa40276 | 1465 | /* We need to determine how many resources are already |
e09342b5 TJB |
1466 | used for all other hardware watchpoints plus this one |
1467 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1468 | this watchpoint in as well. */ |
1469 | ||
1470 | /* If this is a software watchpoint, we try to turn it | |
1471 | to a hardware one -- count resources as if B was of | |
1472 | hardware watchpoint type. */ | |
1473 | type = b->base.type; | |
1474 | if (type == bp_watchpoint) | |
1475 | type = bp_hardware_watchpoint; | |
1476 | ||
1477 | /* This watchpoint may or may not have been placed on | |
1478 | the list yet at this point (it won't be in the list | |
1479 | if we're trying to create it for the first time, | |
1480 | through watch_command), so always account for it | |
1481 | manually. */ | |
1482 | ||
1483 | /* Count resources used by all watchpoints except B. */ | |
1484 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1485 | ||
1486 | /* Add in the resources needed for B. */ | |
1487 | i += hw_watchpoint_use_count (&b->base); | |
1488 | ||
1489 | target_resources_ok | |
1490 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1491 | if (target_resources_ok <= 0) |
a9634178 | 1492 | { |
3a5c3e22 | 1493 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1494 | |
1495 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1496 | error (_("Target does not support this type of " |
1497 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1498 | else if (target_resources_ok < 0 && !sw_mode) |
1499 | error (_("There are not enough available hardware " | |
1500 | "resources for this watchpoint.")); | |
a1398e0c PA |
1501 | |
1502 | /* Downgrade to software watchpoint. */ | |
1503 | b->base.type = bp_watchpoint; | |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | /* If this was a software watchpoint, we've just | |
1508 | found we have enough resources to turn it to a | |
1509 | hardware watchpoint. Otherwise, this is a | |
1510 | nop. */ | |
1511 | b->base.type = type; | |
a9634178 | 1512 | } |
9fa40276 | 1513 | } |
3a5c3e22 | 1514 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1515 | error (_("Expression cannot be implemented with " |
1516 | "read/access watchpoint.")); | |
9fa40276 | 1517 | else |
3a5c3e22 | 1518 | b->base.type = bp_watchpoint; |
9fa40276 | 1519 | |
3a5c3e22 | 1520 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1521 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1522 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1523 | bl->loc_type = loc_type; |
1524 | } | |
1525 | ||
1526 | for (v = val_chain; v; v = next) | |
1527 | { | |
a5606eee VP |
1528 | next = value_next (v); |
1529 | if (v != b->val) | |
1530 | value_free (v); | |
1531 | } | |
1532 | ||
c7437ca6 PA |
1533 | /* If a software watchpoint is not watching any memory, then the |
1534 | above left it without any location set up. But, | |
1535 | bpstat_stop_status requires a location to be able to report | |
1536 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1537 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1538 | { |
3a5c3e22 PA |
1539 | struct breakpoint *base = &b->base; |
1540 | base->loc = allocate_bp_location (base); | |
1541 | base->loc->pspace = frame_pspace; | |
1542 | base->loc->address = -1; | |
1543 | base->loc->length = -1; | |
1544 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1545 | } |
a5606eee VP |
1546 | } |
1547 | else if (!within_current_scope) | |
7270d8f2 | 1548 | { |
ac74f770 MS |
1549 | printf_filtered (_("\ |
1550 | Watchpoint %d deleted because the program has left the block\n\ | |
1551 | in which its expression is valid.\n"), | |
3a5c3e22 | 1552 | b->base.number); |
d0fb5eae | 1553 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1554 | } |
a5606eee VP |
1555 | |
1556 | /* Restore the selected frame. */ | |
66076460 DJ |
1557 | if (frame_saved) |
1558 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1559 | } |
1560 | ||
a5606eee | 1561 | |
74960c60 | 1562 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1563 | inserted in the inferior. We don't differentiate the type of BL's owner |
1564 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1565 | breakpoint_ops is not defined, because in insert_bp_location, | |
1566 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1567 | static int |
35df4500 | 1568 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1569 | { |
35df4500 | 1570 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1571 | return 0; |
1572 | ||
35df4500 | 1573 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1574 | return 0; |
1575 | ||
35df4500 | 1576 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1577 | return 0; |
1578 | ||
56710373 PA |
1579 | /* This is set for example, when we're attached to the parent of a |
1580 | vfork, and have detached from the child. The child is running | |
1581 | free, and we expect it to do an exec or exit, at which point the | |
1582 | OS makes the parent schedulable again (and the target reports | |
1583 | that the vfork is done). Until the child is done with the shared | |
1584 | memory region, do not insert breakpoints in the parent, otherwise | |
1585 | the child could still trip on the parent's breakpoints. Since | |
1586 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1587 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1588 | return 0; |
1589 | ||
74960c60 VP |
1590 | return 1; |
1591 | } | |
1592 | ||
934709f0 PW |
1593 | /* Same as should_be_inserted but does the check assuming |
1594 | that the location is not duplicated. */ | |
1595 | ||
1596 | static int | |
1597 | unduplicated_should_be_inserted (struct bp_location *bl) | |
1598 | { | |
1599 | int result; | |
1600 | const int save_duplicate = bl->duplicate; | |
1601 | ||
1602 | bl->duplicate = 0; | |
1603 | result = should_be_inserted (bl); | |
1604 | bl->duplicate = save_duplicate; | |
1605 | return result; | |
1606 | } | |
1607 | ||
35df4500 TJB |
1608 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1609 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 1610 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
1611 | Returns 0 for success, 1 if the bp_location type is not supported or |
1612 | -1 for failure. | |
879bfdc2 | 1613 | |
4a64f543 MS |
1614 | NOTE drow/2003-09-09: This routine could be broken down to an |
1615 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1616 | static int |
35df4500 | 1617 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1618 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 1619 | int *disabled_breaks, |
26bb91f3 | 1620 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1621 | { |
1622 | int val = 0; | |
1623 | ||
35df4500 | 1624 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1625 | return 0; |
1626 | ||
8181d85f | 1627 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1628 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1629 | bl->target_info.placed_address = bl->address; | |
1630 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1631 | bl->target_info.length = bl->length; |
8181d85f | 1632 | |
35df4500 TJB |
1633 | if (bl->loc_type == bp_loc_software_breakpoint |
1634 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1635 | { |
35df4500 | 1636 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1637 | { |
1638 | /* If the explicitly specified breakpoint type | |
1639 | is not hardware breakpoint, check the memory map to see | |
1640 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1641 | |
765dc015 VP |
1642 | Two important cases are: |
1643 | - location type is not hardware breakpoint, memory | |
1644 | is readonly. We change the type of the location to | |
1645 | hardware breakpoint. | |
4a64f543 MS |
1646 | - location type is hardware breakpoint, memory is |
1647 | read-write. This means we've previously made the | |
1648 | location hardware one, but then the memory map changed, | |
1649 | so we undo. | |
765dc015 | 1650 | |
4a64f543 MS |
1651 | When breakpoints are removed, remove_breakpoints will use |
1652 | location types we've just set here, the only possible | |
1653 | problem is that memory map has changed during running | |
1654 | program, but it's not going to work anyway with current | |
1655 | gdb. */ | |
765dc015 | 1656 | struct mem_region *mr |
35df4500 | 1657 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1658 | |
1659 | if (mr) | |
1660 | { | |
1661 | if (automatic_hardware_breakpoints) | |
1662 | { | |
765dc015 VP |
1663 | enum bp_loc_type new_type; |
1664 | ||
1665 | if (mr->attrib.mode != MEM_RW) | |
1666 | new_type = bp_loc_hardware_breakpoint; | |
1667 | else | |
1668 | new_type = bp_loc_software_breakpoint; | |
1669 | ||
35df4500 | 1670 | if (new_type != bl->loc_type) |
765dc015 VP |
1671 | { |
1672 | static int said = 0; | |
cc59ec59 | 1673 | |
35df4500 | 1674 | bl->loc_type = new_type; |
765dc015 VP |
1675 | if (!said) |
1676 | { | |
3e43a32a MS |
1677 | fprintf_filtered (gdb_stdout, |
1678 | _("Note: automatically using " | |
1679 | "hardware breakpoints for " | |
1680 | "read-only addresses.\n")); | |
765dc015 VP |
1681 | said = 1; |
1682 | } | |
1683 | } | |
1684 | } | |
35df4500 | 1685 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1686 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1687 | warning (_("cannot set software breakpoint " |
1688 | "at readonly address %s"), | |
35df4500 | 1689 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1690 | } |
1691 | } | |
1692 | ||
879bfdc2 DJ |
1693 | /* First check to see if we have to handle an overlay. */ |
1694 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1695 | || bl->section == NULL |
1696 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1697 | { |
1698 | /* No overlay handling: just set the breakpoint. */ | |
1699 | ||
348d480f | 1700 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1701 | } |
1702 | else | |
1703 | { | |
4a64f543 | 1704 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1705 | Shall we set a breakpoint at the LMA? */ |
1706 | if (!overlay_events_enabled) | |
1707 | { | |
1708 | /* Yes -- overlay event support is not active, | |
1709 | so we must try to set a breakpoint at the LMA. | |
1710 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1711 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1712 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1713 | bl->owner->number); |
879bfdc2 DJ |
1714 | else |
1715 | { | |
35df4500 TJB |
1716 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1717 | bl->section); | |
879bfdc2 | 1718 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1719 | bl->overlay_target_info = bl->target_info; |
1720 | bl->overlay_target_info.placed_address = addr; | |
1721 | val = target_insert_breakpoint (bl->gdbarch, | |
1722 | &bl->overlay_target_info); | |
879bfdc2 | 1723 | if (val != 0) |
99361f52 | 1724 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1725 | "Overlay breakpoint %d " |
1726 | "failed: in ROM?\n", | |
35df4500 | 1727 | bl->owner->number); |
879bfdc2 DJ |
1728 | } |
1729 | } | |
1730 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1731 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1732 | { |
1733 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 1734 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1735 | } |
1736 | else | |
1737 | { | |
1738 | /* No. This breakpoint will not be inserted. | |
1739 | No error, but do not mark the bp as 'inserted'. */ | |
1740 | return 0; | |
1741 | } | |
1742 | } | |
1743 | ||
1744 | if (val) | |
1745 | { | |
1746 | /* Can't set the breakpoint. */ | |
35df4500 | 1747 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1748 | { |
4a64f543 | 1749 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1750 | val = 0; |
35df4500 | 1751 | bl->shlib_disabled = 1; |
8d3788bd | 1752 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
1753 | if (!*disabled_breaks) |
1754 | { | |
1755 | fprintf_unfiltered (tmp_error_stream, | |
1756 | "Cannot insert breakpoint %d.\n", | |
1757 | bl->owner->number); | |
1758 | fprintf_unfiltered (tmp_error_stream, | |
1759 | "Temporarily disabling shared " | |
1760 | "library breakpoints:\n"); | |
1761 | } | |
1762 | *disabled_breaks = 1; | |
879bfdc2 | 1763 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 1764 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1765 | } |
1766 | else | |
879bfdc2 | 1767 | { |
35df4500 | 1768 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1769 | { |
1770 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1771 | fprintf_unfiltered (tmp_error_stream, |
1772 | "Cannot insert hardware " | |
1773 | "breakpoint %d.\n", | |
35df4500 | 1774 | bl->owner->number); |
879bfdc2 DJ |
1775 | } |
1776 | else | |
1777 | { | |
1778 | fprintf_unfiltered (tmp_error_stream, | |
1779 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1780 | bl->owner->number); |
879bfdc2 DJ |
1781 | fprintf_filtered (tmp_error_stream, |
1782 | "Error accessing memory address "); | |
35df4500 | 1783 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1784 | tmp_error_stream); |
879bfdc2 DJ |
1785 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1786 | safe_strerror (val)); | |
1787 | } | |
1788 | ||
1789 | } | |
1790 | } | |
1791 | else | |
35df4500 | 1792 | bl->inserted = 1; |
879bfdc2 DJ |
1793 | |
1794 | return val; | |
1795 | } | |
1796 | ||
35df4500 | 1797 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1798 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1799 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1800 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1801 | { |
77b06cd7 TJB |
1802 | gdb_assert (bl->owner->ops != NULL |
1803 | && bl->owner->ops->insert_location != NULL); | |
1804 | ||
1805 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1806 | |
1807 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1808 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1809 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1810 | { |
1811 | struct bp_location *loc, **loc_temp; | |
1812 | ||
1813 | /* But don't try to insert it, if there's already another | |
1814 | hw_access location that would be considered a duplicate | |
1815 | of this one. */ | |
1816 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1817 | if (loc != bl |
85d721b8 | 1818 | && loc->watchpoint_type == hw_access |
35df4500 | 1819 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1820 | { |
35df4500 TJB |
1821 | bl->duplicate = 1; |
1822 | bl->inserted = 1; | |
1823 | bl->target_info = loc->target_info; | |
1824 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1825 | val = 0; |
1826 | break; | |
1827 | } | |
1828 | ||
1829 | if (val == 1) | |
1830 | { | |
77b06cd7 TJB |
1831 | bl->watchpoint_type = hw_access; |
1832 | val = bl->owner->ops->insert_location (bl); | |
1833 | ||
1834 | if (val) | |
1835 | /* Back to the original value. */ | |
1836 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1837 | } |
1838 | } | |
1839 | ||
35df4500 | 1840 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1841 | } |
1842 | ||
35df4500 | 1843 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1844 | { |
77b06cd7 TJB |
1845 | gdb_assert (bl->owner->ops != NULL |
1846 | && bl->owner->ops->insert_location != NULL); | |
1847 | ||
1848 | val = bl->owner->ops->insert_location (bl); | |
1849 | if (val) | |
1850 | { | |
1851 | bl->owner->enable_state = bp_disabled; | |
1852 | ||
1853 | if (val == 1) | |
1854 | warning (_("\ | |
1855 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1856 | of catchpoint."), bl->owner->number); | |
1857 | else | |
1858 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1859 | } | |
1860 | ||
1861 | bl->inserted = (val == 0); | |
1640b821 DJ |
1862 | |
1863 | /* We've already printed an error message if there was a problem | |
1864 | inserting this catchpoint, and we've disabled the catchpoint, | |
1865 | so just return success. */ | |
1866 | return 0; | |
879bfdc2 DJ |
1867 | } |
1868 | ||
1869 | return 0; | |
1870 | } | |
1871 | ||
6c95b8df PA |
1872 | /* This function is called when program space PSPACE is about to be |
1873 | deleted. It takes care of updating breakpoints to not reference | |
1874 | PSPACE anymore. */ | |
1875 | ||
1876 | void | |
1877 | breakpoint_program_space_exit (struct program_space *pspace) | |
1878 | { | |
1879 | struct breakpoint *b, *b_temp; | |
876fa593 | 1880 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1881 | |
1882 | /* Remove any breakpoint that was set through this program space. */ | |
1883 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1884 | { | |
1885 | if (b->pspace == pspace) | |
1886 | delete_breakpoint (b); | |
1887 | } | |
1888 | ||
1889 | /* Breakpoints set through other program spaces could have locations | |
1890 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1891 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1892 | { |
1893 | struct bp_location *tmp; | |
1894 | ||
1895 | if (loc->pspace == pspace) | |
1896 | { | |
2bdf28a0 | 1897 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1898 | if (loc->owner->loc == loc) |
1899 | loc->owner->loc = loc->next; | |
1900 | else | |
1901 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1902 | if (tmp->next == loc) | |
1903 | { | |
1904 | tmp->next = loc->next; | |
1905 | break; | |
1906 | } | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /* Now update the global location list to permanently delete the | |
1911 | removed locations above. */ | |
1912 | update_global_location_list (0); | |
1913 | } | |
1914 | ||
74960c60 VP |
1915 | /* Make sure all breakpoints are inserted in inferior. |
1916 | Throws exception on any error. | |
1917 | A breakpoint that is already inserted won't be inserted | |
1918 | again, so calling this function twice is safe. */ | |
1919 | void | |
1920 | insert_breakpoints (void) | |
1921 | { | |
1922 | struct breakpoint *bpt; | |
1923 | ||
1924 | ALL_BREAKPOINTS (bpt) | |
1925 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
1926 | { |
1927 | struct watchpoint *w = (struct watchpoint *) bpt; | |
1928 | ||
1929 | update_watchpoint (w, 0 /* don't reparse. */); | |
1930 | } | |
74960c60 | 1931 | |
b60e7edf | 1932 | update_global_location_list (1); |
74960c60 | 1933 | |
c35b1492 PA |
1934 | /* update_global_location_list does not insert breakpoints when |
1935 | always_inserted_mode is not enabled. Explicitly insert them | |
1936 | now. */ | |
1937 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1938 | insert_breakpoint_locations (); |
1939 | } | |
1940 | ||
c30eee59 | 1941 | /* Used when starting or continuing the program. */ |
c906108c | 1942 | |
74960c60 VP |
1943 | static void |
1944 | insert_breakpoint_locations (void) | |
c906108c | 1945 | { |
a5606eee | 1946 | struct breakpoint *bpt; |
35df4500 | 1947 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1948 | int error = 0; |
c906108c | 1949 | int val = 0; |
3fbb6ffa | 1950 | int disabled_breaks = 0; |
81d0cc19 | 1951 | int hw_breakpoint_error = 0; |
c906108c | 1952 | |
81d0cc19 | 1953 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1954 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1955 | |
81d0cc19 GS |
1956 | /* Explicitly mark the warning -- this will only be printed if |
1957 | there was an error. */ | |
1958 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1959 | |
1960 | save_current_space_and_thread (); | |
1961 | ||
35df4500 | 1962 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1963 | { |
35df4500 | 1964 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1965 | continue; |
1966 | ||
4a64f543 MS |
1967 | /* There is no point inserting thread-specific breakpoints if |
1968 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1969 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1970 | if (bl->owner->thread != -1 |
1971 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1972 | continue; |
1973 | ||
35df4500 | 1974 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1975 | |
1976 | /* For targets that support global breakpoints, there's no need | |
1977 | to select an inferior to insert breakpoint to. In fact, even | |
1978 | if we aren't attached to any process yet, we should still | |
1979 | insert breakpoints. */ | |
1980 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1981 | && ptid_equal (inferior_ptid, null_ptid)) | |
1982 | continue; | |
1983 | ||
3fbb6ffa TJB |
1984 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
1985 | &hw_breakpoint_error); | |
879bfdc2 | 1986 | if (val) |
e236ba44 | 1987 | error = val; |
879bfdc2 | 1988 | } |
c906108c | 1989 | |
4a64f543 MS |
1990 | /* If we failed to insert all locations of a watchpoint, remove |
1991 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1992 | ALL_BREAKPOINTS (bpt) |
1993 | { | |
1994 | int some_failed = 0; | |
1995 | struct bp_location *loc; | |
1996 | ||
1997 | if (!is_hardware_watchpoint (bpt)) | |
1998 | continue; | |
1999 | ||
d6b74ac4 | 2000 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2001 | continue; |
74960c60 VP |
2002 | |
2003 | if (bpt->disposition == disp_del_at_next_stop) | |
2004 | continue; | |
a5606eee VP |
2005 | |
2006 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2007 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2008 | { |
2009 | some_failed = 1; | |
2010 | break; | |
2011 | } | |
2012 | if (some_failed) | |
2013 | { | |
2014 | for (loc = bpt->loc; loc; loc = loc->next) | |
2015 | if (loc->inserted) | |
2016 | remove_breakpoint (loc, mark_uninserted); | |
2017 | ||
2018 | hw_breakpoint_error = 1; | |
2019 | fprintf_unfiltered (tmp_error_stream, | |
2020 | "Could not insert hardware watchpoint %d.\n", | |
2021 | bpt->number); | |
2022 | error = -1; | |
2023 | } | |
2024 | } | |
2025 | ||
e236ba44 | 2026 | if (error) |
81d0cc19 GS |
2027 | { |
2028 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2029 | message about possibly exhausted resources. */ | |
879bfdc2 | 2030 | if (hw_breakpoint_error) |
81d0cc19 | 2031 | { |
c6510018 MS |
2032 | fprintf_unfiltered (tmp_error_stream, |
2033 | "Could not insert hardware breakpoints:\n\ | |
2034 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2035 | } |
81d0cc19 GS |
2036 | target_terminal_ours_for_output (); |
2037 | error_stream (tmp_error_stream); | |
2038 | } | |
f7545552 TT |
2039 | |
2040 | do_cleanups (cleanups); | |
c906108c SS |
2041 | } |
2042 | ||
c30eee59 TJB |
2043 | /* Used when the program stops. |
2044 | Returns zero if successful, or non-zero if there was a problem | |
2045 | removing a breakpoint location. */ | |
2046 | ||
c906108c | 2047 | int |
fba45db2 | 2048 | remove_breakpoints (void) |
c906108c | 2049 | { |
35df4500 | 2050 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2051 | int val = 0; |
c906108c | 2052 | |
35df4500 | 2053 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2054 | { |
1e4d1764 | 2055 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2056 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2057 | } |
3a1bae8e | 2058 | return val; |
c906108c SS |
2059 | } |
2060 | ||
6c95b8df PA |
2061 | /* Remove breakpoints of process PID. */ |
2062 | ||
2063 | int | |
2064 | remove_breakpoints_pid (int pid) | |
2065 | { | |
35df4500 | 2066 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2067 | int val; |
2068 | struct inferior *inf = find_inferior_pid (pid); | |
2069 | ||
35df4500 | 2070 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2071 | { |
35df4500 | 2072 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2073 | continue; |
2074 | ||
35df4500 | 2075 | if (bl->inserted) |
6c95b8df | 2076 | { |
35df4500 | 2077 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2078 | if (val != 0) |
2079 | return val; | |
2080 | } | |
2081 | } | |
2082 | return 0; | |
2083 | } | |
2084 | ||
c906108c | 2085 | int |
fba45db2 | 2086 | reattach_breakpoints (int pid) |
c906108c | 2087 | { |
6c95b8df | 2088 | struct cleanup *old_chain; |
35df4500 | 2089 | struct bp_location *bl, **blp_tmp; |
c906108c | 2090 | int val; |
86b887df | 2091 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2092 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2093 | struct inferior *inf; |
2094 | struct thread_info *tp; | |
2095 | ||
2096 | tp = any_live_thread_of_process (pid); | |
2097 | if (tp == NULL) | |
2098 | return 1; | |
2099 | ||
2100 | inf = find_inferior_pid (pid); | |
2101 | old_chain = save_inferior_ptid (); | |
2102 | ||
2103 | inferior_ptid = tp->ptid; | |
a4954f26 | 2104 | |
86b887df | 2105 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2106 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2107 | |
35df4500 | 2108 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2109 | { |
35df4500 | 2110 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2111 | continue; |
2112 | ||
35df4500 | 2113 | if (bl->inserted) |
c5aa993b | 2114 | { |
35df4500 | 2115 | bl->inserted = 0; |
3fbb6ffa | 2116 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2117 | if (val != 0) |
2118 | { | |
ce696e05 | 2119 | do_cleanups (old_chain); |
c5aa993b JM |
2120 | return val; |
2121 | } | |
2122 | } | |
2123 | } | |
ce696e05 | 2124 | do_cleanups (old_chain); |
c906108c SS |
2125 | return 0; |
2126 | } | |
2127 | ||
e58b0e63 PA |
2128 | static int internal_breakpoint_number = -1; |
2129 | ||
84f4c1fe PM |
2130 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2131 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2132 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2133 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2134 | breakpoint_count and that value incremented. Internal breakpoints |
2135 | do not set the internal var bpnum. */ | |
2136 | static void | |
2137 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2138 | { | |
2139 | if (internal) | |
2140 | b->number = internal_breakpoint_number--; | |
2141 | else | |
2142 | { | |
2143 | set_breakpoint_count (breakpoint_count + 1); | |
2144 | b->number = breakpoint_count; | |
2145 | } | |
2146 | } | |
2147 | ||
e62c965a | 2148 | static struct breakpoint * |
a6d9a66e | 2149 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2150 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2151 | const struct breakpoint_ops *ops) |
e62c965a | 2152 | { |
e62c965a PP |
2153 | struct symtab_and_line sal; |
2154 | struct breakpoint *b; | |
2155 | ||
4a64f543 | 2156 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2157 | |
2158 | sal.pc = address; | |
2159 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2160 | sal.pspace = current_program_space; |
e62c965a | 2161 | |
06edf0c0 | 2162 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2163 | b->number = internal_breakpoint_number--; |
2164 | b->disposition = disp_donttouch; | |
2165 | ||
2166 | return b; | |
2167 | } | |
2168 | ||
17450429 PP |
2169 | static const char *const longjmp_names[] = |
2170 | { | |
2171 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2172 | }; | |
2173 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2174 | ||
2175 | /* Per-objfile data private to breakpoint.c. */ | |
2176 | struct breakpoint_objfile_data | |
2177 | { | |
2178 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2179 | struct minimal_symbol *overlay_msym; | |
2180 | ||
2181 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2182 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2183 | ||
2184 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2185 | struct minimal_symbol *terminate_msym; | |
2186 | ||
2187 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2188 | struct minimal_symbol *exception_msym; | |
2189 | }; | |
2190 | ||
2191 | static const struct objfile_data *breakpoint_objfile_key; | |
2192 | ||
2193 | /* Minimal symbol not found sentinel. */ | |
2194 | static struct minimal_symbol msym_not_found; | |
2195 | ||
2196 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2197 | ||
2198 | static int | |
2199 | msym_not_found_p (const struct minimal_symbol *msym) | |
2200 | { | |
2201 | return msym == &msym_not_found; | |
2202 | } | |
2203 | ||
2204 | /* Return per-objfile data needed by breakpoint.c. | |
2205 | Allocate the data if necessary. */ | |
2206 | ||
2207 | static struct breakpoint_objfile_data * | |
2208 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2209 | { | |
2210 | struct breakpoint_objfile_data *bp_objfile_data; | |
2211 | ||
2212 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2213 | if (bp_objfile_data == NULL) | |
2214 | { | |
2215 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2216 | sizeof (*bp_objfile_data)); | |
2217 | ||
2218 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2219 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2220 | } | |
2221 | return bp_objfile_data; | |
2222 | } | |
2223 | ||
e62c965a | 2224 | static void |
af02033e | 2225 | create_overlay_event_breakpoint (void) |
e62c965a | 2226 | { |
69de3c6a | 2227 | struct objfile *objfile; |
af02033e | 2228 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2229 | |
69de3c6a PP |
2230 | ALL_OBJFILES (objfile) |
2231 | { | |
2232 | struct breakpoint *b; | |
17450429 PP |
2233 | struct breakpoint_objfile_data *bp_objfile_data; |
2234 | CORE_ADDR addr; | |
69de3c6a | 2235 | |
17450429 PP |
2236 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2237 | ||
2238 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2239 | continue; | |
2240 | ||
2241 | if (bp_objfile_data->overlay_msym == NULL) | |
2242 | { | |
2243 | struct minimal_symbol *m; | |
2244 | ||
2245 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2246 | if (m == NULL) | |
2247 | { | |
2248 | /* Avoid future lookups in this objfile. */ | |
2249 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2250 | continue; | |
2251 | } | |
2252 | bp_objfile_data->overlay_msym = m; | |
2253 | } | |
e62c965a | 2254 | |
17450429 PP |
2255 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2256 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2257 | bp_overlay_event, |
2258 | &internal_breakpoint_ops); | |
69de3c6a | 2259 | b->addr_string = xstrdup (func_name); |
e62c965a | 2260 | |
69de3c6a PP |
2261 | if (overlay_debugging == ovly_auto) |
2262 | { | |
2263 | b->enable_state = bp_enabled; | |
2264 | overlay_events_enabled = 1; | |
2265 | } | |
2266 | else | |
2267 | { | |
2268 | b->enable_state = bp_disabled; | |
2269 | overlay_events_enabled = 0; | |
2270 | } | |
e62c965a PP |
2271 | } |
2272 | update_global_location_list (1); | |
2273 | } | |
2274 | ||
0fd8e87f | 2275 | static void |
af02033e | 2276 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2277 | { |
6c95b8df | 2278 | struct program_space *pspace; |
6c95b8df PA |
2279 | struct cleanup *old_chain; |
2280 | ||
2281 | old_chain = save_current_program_space (); | |
0fd8e87f | 2282 | |
6c95b8df | 2283 | ALL_PSPACES (pspace) |
af02033e PP |
2284 | { |
2285 | struct objfile *objfile; | |
2286 | ||
2287 | set_current_program_space (pspace); | |
2288 | ||
2289 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2290 | { |
af02033e PP |
2291 | int i; |
2292 | struct gdbarch *gdbarch; | |
17450429 | 2293 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2294 | |
af02033e PP |
2295 | gdbarch = get_objfile_arch (objfile); |
2296 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2297 | continue; |
2298 | ||
17450429 PP |
2299 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2300 | ||
2301 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2302 | { |
2303 | struct breakpoint *b; | |
af02033e | 2304 | const char *func_name; |
17450429 | 2305 | CORE_ADDR addr; |
6c95b8df | 2306 | |
17450429 | 2307 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2308 | continue; |
0fd8e87f | 2309 | |
17450429 PP |
2310 | func_name = longjmp_names[i]; |
2311 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2312 | { | |
2313 | struct minimal_symbol *m; | |
2314 | ||
2315 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2316 | if (m == NULL) | |
2317 | { | |
2318 | /* Prevent future lookups in this objfile. */ | |
2319 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2320 | continue; | |
2321 | } | |
2322 | bp_objfile_data->longjmp_msym[i] = m; | |
2323 | } | |
2324 | ||
2325 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2326 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2327 | &internal_breakpoint_ops); | |
af02033e PP |
2328 | b->addr_string = xstrdup (func_name); |
2329 | b->enable_state = bp_disabled; | |
2330 | } | |
0fd8e87f | 2331 | } |
af02033e | 2332 | } |
0fd8e87f | 2333 | update_global_location_list (1); |
6c95b8df PA |
2334 | |
2335 | do_cleanups (old_chain); | |
0fd8e87f UW |
2336 | } |
2337 | ||
af02033e | 2338 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2339 | static void |
af02033e | 2340 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2341 | { |
2342 | struct program_space *pspace; | |
aa7d318d | 2343 | struct cleanup *old_chain; |
af02033e | 2344 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2345 | |
2346 | old_chain = save_current_program_space (); | |
2347 | ||
2348 | ALL_PSPACES (pspace) | |
17450429 PP |
2349 | { |
2350 | struct objfile *objfile; | |
2351 | CORE_ADDR addr; | |
2352 | ||
2353 | set_current_program_space (pspace); | |
2354 | ||
aa7d318d TT |
2355 | ALL_OBJFILES (objfile) |
2356 | { | |
2357 | struct breakpoint *b; | |
17450429 | 2358 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2359 | |
17450429 | 2360 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2361 | |
17450429 PP |
2362 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2363 | continue; | |
2364 | ||
2365 | if (bp_objfile_data->terminate_msym == NULL) | |
2366 | { | |
2367 | struct minimal_symbol *m; | |
2368 | ||
2369 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2370 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2371 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2372 | { | |
2373 | /* Prevent future lookups in this objfile. */ | |
2374 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2375 | continue; | |
2376 | } | |
2377 | bp_objfile_data->terminate_msym = m; | |
2378 | } | |
aa7d318d | 2379 | |
17450429 PP |
2380 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2381 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2382 | bp_std_terminate_master, |
2383 | &internal_breakpoint_ops); | |
aa7d318d TT |
2384 | b->addr_string = xstrdup (func_name); |
2385 | b->enable_state = bp_disabled; | |
2386 | } | |
17450429 PP |
2387 | } |
2388 | ||
aa7d318d TT |
2389 | update_global_location_list (1); |
2390 | ||
2391 | do_cleanups (old_chain); | |
2392 | } | |
2393 | ||
186c406b TT |
2394 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2395 | ||
2396 | void | |
2397 | create_exception_master_breakpoint (void) | |
2398 | { | |
2399 | struct objfile *objfile; | |
17450429 | 2400 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2401 | |
2402 | ALL_OBJFILES (objfile) | |
2403 | { | |
17450429 PP |
2404 | struct breakpoint *b; |
2405 | struct gdbarch *gdbarch; | |
2406 | struct breakpoint_objfile_data *bp_objfile_data; | |
2407 | CORE_ADDR addr; | |
2408 | ||
2409 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2410 | ||
2411 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2412 | continue; | |
2413 | ||
2414 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2415 | |
17450429 | 2416 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2417 | { |
17450429 | 2418 | struct minimal_symbol *debug_hook; |
186c406b | 2419 | |
17450429 PP |
2420 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2421 | if (debug_hook == NULL) | |
2422 | { | |
2423 | bp_objfile_data->exception_msym = &msym_not_found; | |
2424 | continue; | |
2425 | } | |
2426 | ||
2427 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2428 | } |
17450429 PP |
2429 | |
2430 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2431 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2432 | ¤t_target); | |
06edf0c0 PA |
2433 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
2434 | &internal_breakpoint_ops); | |
17450429 PP |
2435 | b->addr_string = xstrdup (func_name); |
2436 | b->enable_state = bp_disabled; | |
186c406b TT |
2437 | } |
2438 | ||
2439 | update_global_location_list (1); | |
2440 | } | |
2441 | ||
c906108c | 2442 | void |
fba45db2 | 2443 | update_breakpoints_after_exec (void) |
c906108c | 2444 | { |
35df4500 | 2445 | struct breakpoint *b, *b_tmp; |
876fa593 | 2446 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2447 | |
25b22b0a PA |
2448 | /* We're about to delete breakpoints from GDB's lists. If the |
2449 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2450 | writing the breakpoints' "shadow contents" back into memory. The | |
2451 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2452 | do that. Instead, the target is responsible from marking | |
2453 | breakpoints out as soon as it detects an exec. We don't do that | |
2454 | here instead, because there may be other attempts to delete | |
2455 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2456 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2457 | if (bploc->pspace == current_program_space) |
2458 | gdb_assert (!bploc->inserted); | |
c906108c | 2459 | |
35df4500 | 2460 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2461 | { |
6c95b8df PA |
2462 | if (b->pspace != current_program_space) |
2463 | continue; | |
2464 | ||
4a64f543 | 2465 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2466 | if (b->type == bp_shlib_event) |
2467 | { | |
2468 | delete_breakpoint (b); | |
2469 | continue; | |
2470 | } | |
c906108c | 2471 | |
4a64f543 | 2472 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2473 | if (b->type == bp_jit_event) |
2474 | { | |
2475 | delete_breakpoint (b); | |
2476 | continue; | |
2477 | } | |
2478 | ||
1900040c | 2479 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2480 | as must overlay event and longjmp master breakpoints. */ |
2481 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2482 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2483 | || b->type == bp_exception_master) | |
c4093a6a JM |
2484 | { |
2485 | delete_breakpoint (b); | |
2486 | continue; | |
2487 | } | |
2488 | ||
4a64f543 | 2489 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 2490 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
2491 | { |
2492 | delete_breakpoint (b); | |
2493 | continue; | |
2494 | } | |
2495 | ||
611c83ae PA |
2496 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2497 | after an exec. */ | |
186c406b TT |
2498 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2499 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2500 | { |
2501 | delete_breakpoint (b); | |
2502 | continue; | |
2503 | } | |
2504 | ||
ce78b96d JB |
2505 | if (b->type == bp_catchpoint) |
2506 | { | |
2507 | /* For now, none of the bp_catchpoint breakpoints need to | |
2508 | do anything at this point. In the future, if some of | |
2509 | the catchpoints need to something, we will need to add | |
2510 | a new method, and call this method from here. */ | |
2511 | continue; | |
2512 | } | |
2513 | ||
c5aa993b JM |
2514 | /* bp_finish is a special case. The only way we ought to be able |
2515 | to see one of these when an exec() has happened, is if the user | |
2516 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2517 | carries them to the call-site of the current callee, by setting | |
2518 | a temporary bp there and resuming. But in this case, the finish | |
2519 | will carry them entirely through the vfork & exec. | |
2520 | ||
2521 | We don't want to allow a bp_finish to remain inserted now. But | |
2522 | we can't safely delete it, 'cause finish_command has a handle to | |
2523 | the bp on a bpstat, and will later want to delete it. There's a | |
2524 | chance (and I've seen it happen) that if we delete the bp_finish | |
2525 | here, that its storage will get reused by the time finish_command | |
2526 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2527 | We really must allow finish_command to delete a bp_finish. | |
2528 | ||
e5dd4106 | 2529 | In the absence of a general solution for the "how do we know |
53a5351d JM |
2530 | it's safe to delete something others may have handles to?" |
2531 | problem, what we'll do here is just uninsert the bp_finish, and | |
2532 | let finish_command delete it. | |
2533 | ||
2534 | (We know the bp_finish is "doomed" in the sense that it's | |
2535 | momentary, and will be deleted as soon as finish_command sees | |
2536 | the inferior stopped. So it doesn't matter that the bp's | |
2537 | address is probably bogus in the new a.out, unlike e.g., the | |
2538 | solib breakpoints.) */ | |
c5aa993b | 2539 | |
c5aa993b JM |
2540 | if (b->type == bp_finish) |
2541 | { | |
2542 | continue; | |
2543 | } | |
2544 | ||
2545 | /* Without a symbolic address, we have little hope of the | |
2546 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2547 | a.out. */ |
c5aa993b JM |
2548 | if (b->addr_string == NULL) |
2549 | { | |
2550 | delete_breakpoint (b); | |
2551 | continue; | |
2552 | } | |
c5aa993b | 2553 | } |
1900040c | 2554 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2555 | create_overlay_event_breakpoint (); |
2556 | create_longjmp_master_breakpoint (); | |
2557 | create_std_terminate_master_breakpoint (); | |
186c406b | 2558 | create_exception_master_breakpoint (); |
c906108c SS |
2559 | } |
2560 | ||
2561 | int | |
fba45db2 | 2562 | detach_breakpoints (int pid) |
c906108c | 2563 | { |
35df4500 | 2564 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2565 | int val = 0; |
ce696e05 | 2566 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2567 | struct inferior *inf = current_inferior (); |
c5aa993b | 2568 | |
39f77062 | 2569 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2570 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2571 | |
6c95b8df | 2572 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2573 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2574 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2575 | { |
35df4500 | 2576 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2577 | continue; |
2578 | ||
35df4500 TJB |
2579 | if (bl->inserted) |
2580 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2581 | } |
d03285ec UW |
2582 | |
2583 | /* Detach single-step breakpoints as well. */ | |
2584 | detach_single_step_breakpoints (); | |
2585 | ||
ce696e05 | 2586 | do_cleanups (old_chain); |
3a1bae8e | 2587 | return val; |
c906108c SS |
2588 | } |
2589 | ||
35df4500 | 2590 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2591 | Note that this is used to detach breakpoints from a child fork. |
2592 | When we get here, the child isn't in the inferior list, and neither | |
2593 | do we have objects to represent its address space --- we should | |
35df4500 | 2594 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2595 | |
c906108c | 2596 | static int |
35df4500 | 2597 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2598 | { |
2599 | int val; | |
c5aa993b | 2600 | |
35df4500 TJB |
2601 | /* BL is never in moribund_locations by our callers. */ |
2602 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2603 | |
35df4500 | 2604 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2605 | /* Permanent breakpoints cannot be inserted or removed. */ |
2606 | return 0; | |
2607 | ||
74960c60 VP |
2608 | /* The type of none suggests that owner is actually deleted. |
2609 | This should not ever happen. */ | |
35df4500 | 2610 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2611 | |
35df4500 TJB |
2612 | if (bl->loc_type == bp_loc_software_breakpoint |
2613 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2614 | { |
c02f5703 MS |
2615 | /* "Normal" instruction breakpoint: either the standard |
2616 | trap-instruction bp (bp_breakpoint), or a | |
2617 | bp_hardware_breakpoint. */ | |
2618 | ||
2619 | /* First check to see if we have to handle an overlay. */ | |
2620 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2621 | || bl->section == NULL |
2622 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2623 | { |
2624 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 2625 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 2626 | } |
c906108c SS |
2627 | else |
2628 | { | |
4a64f543 | 2629 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2630 | Did we set a breakpoint at the LMA? */ |
2631 | if (!overlay_events_enabled) | |
2632 | { | |
2633 | /* Yes -- overlay event support is not active, so we | |
2634 | should have set a breakpoint at the LMA. Remove it. | |
2635 | */ | |
c02f5703 MS |
2636 | /* Ignore any failures: if the LMA is in ROM, we will |
2637 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2638 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2639 | target_remove_hw_breakpoint (bl->gdbarch, | |
2640 | &bl->overlay_target_info); | |
c02f5703 | 2641 | else |
35df4500 TJB |
2642 | target_remove_breakpoint (bl->gdbarch, |
2643 | &bl->overlay_target_info); | |
c02f5703 MS |
2644 | } |
2645 | /* Did we set a breakpoint at the VMA? | |
2646 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2647 | if (bl->inserted) |
c906108c | 2648 | { |
c02f5703 MS |
2649 | /* Yes -- remove it. Previously we did not bother to |
2650 | remove the breakpoint if the section had been | |
2651 | unmapped, but let's not rely on that being safe. We | |
2652 | don't know what the overlay manager might do. */ | |
aa67235e UW |
2653 | |
2654 | /* However, we should remove *software* breakpoints only | |
2655 | if the section is still mapped, or else we overwrite | |
2656 | wrong code with the saved shadow contents. */ | |
348d480f PA |
2657 | if (bl->loc_type == bp_loc_hardware_breakpoint |
2658 | || section_is_mapped (bl->section)) | |
2659 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
2660 | else |
2661 | val = 0; | |
c906108c | 2662 | } |
c02f5703 MS |
2663 | else |
2664 | { | |
2665 | /* No -- not inserted, so no need to remove. No error. */ | |
2666 | val = 0; | |
2667 | } | |
c906108c | 2668 | } |
879d1e6b UW |
2669 | |
2670 | /* In some cases, we might not be able to remove a breakpoint | |
2671 | in a shared library that has already been removed, but we | |
2672 | have not yet processed the shlib unload event. */ | |
35df4500 | 2673 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2674 | val = 0; |
2675 | ||
c906108c SS |
2676 | if (val) |
2677 | return val; | |
35df4500 | 2678 | bl->inserted = (is == mark_inserted); |
c906108c | 2679 | } |
35df4500 | 2680 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2681 | { |
77b06cd7 TJB |
2682 | gdb_assert (bl->owner->ops != NULL |
2683 | && bl->owner->ops->remove_location != NULL); | |
2684 | ||
35df4500 | 2685 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2686 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2687 | |
c906108c | 2688 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2689 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2690 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2691 | bl->owner->number); |
c906108c | 2692 | } |
35df4500 TJB |
2693 | else if (bl->owner->type == bp_catchpoint |
2694 | && breakpoint_enabled (bl->owner) | |
2695 | && !bl->duplicate) | |
ce78b96d | 2696 | { |
77b06cd7 TJB |
2697 | gdb_assert (bl->owner->ops != NULL |
2698 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2699 | |
77b06cd7 | 2700 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2701 | if (val) |
2702 | return val; | |
77b06cd7 | 2703 | |
35df4500 | 2704 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2705 | } |
c906108c SS |
2706 | |
2707 | return 0; | |
2708 | } | |
2709 | ||
6c95b8df | 2710 | static int |
35df4500 | 2711 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2712 | { |
2713 | int ret; | |
2714 | struct cleanup *old_chain; | |
2715 | ||
35df4500 TJB |
2716 | /* BL is never in moribund_locations by our callers. */ |
2717 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2718 | |
35df4500 | 2719 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2720 | /* Permanent breakpoints cannot be inserted or removed. */ |
2721 | return 0; | |
2722 | ||
2723 | /* The type of none suggests that owner is actually deleted. | |
2724 | This should not ever happen. */ | |
35df4500 | 2725 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2726 | |
2727 | old_chain = save_current_space_and_thread (); | |
2728 | ||
35df4500 | 2729 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2730 | |
35df4500 | 2731 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2732 | |
2733 | do_cleanups (old_chain); | |
2734 | return ret; | |
2735 | } | |
2736 | ||
c906108c SS |
2737 | /* Clear the "inserted" flag in all breakpoints. */ |
2738 | ||
25b22b0a | 2739 | void |
fba45db2 | 2740 | mark_breakpoints_out (void) |
c906108c | 2741 | { |
35df4500 | 2742 | struct bp_location *bl, **blp_tmp; |
c906108c | 2743 | |
35df4500 TJB |
2744 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2745 | if (bl->pspace == current_program_space) | |
2746 | bl->inserted = 0; | |
c906108c SS |
2747 | } |
2748 | ||
53a5351d JM |
2749 | /* Clear the "inserted" flag in all breakpoints and delete any |
2750 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2751 | |
2752 | Plus other such housekeeping that has to be done for breakpoints | |
2753 | between runs. | |
2754 | ||
53a5351d JM |
2755 | Note: this function gets called at the end of a run (by |
2756 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2757 | init_wait_for_inferior). */ |
c906108c SS |
2758 | |
2759 | ||
2760 | ||
2761 | void | |
fba45db2 | 2762 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2763 | { |
35df4500 TJB |
2764 | struct breakpoint *b, *b_tmp; |
2765 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2766 | int ix; |
6c95b8df | 2767 | struct program_space *pspace = current_program_space; |
c906108c | 2768 | |
50c71eaf PA |
2769 | /* If breakpoint locations are shared across processes, then there's |
2770 | nothing to do. */ | |
2567c7d9 | 2771 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2772 | return; |
2773 | ||
35df4500 | 2774 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2775 | { |
35df4500 TJB |
2776 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2777 | if (bl->pspace == pspace | |
2778 | && bl->owner->enable_state != bp_permanent) | |
2779 | bl->inserted = 0; | |
6c95b8df | 2780 | } |
075f6582 | 2781 | |
35df4500 | 2782 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2783 | { |
6c95b8df PA |
2784 | if (b->loc && b->loc->pspace != pspace) |
2785 | continue; | |
2786 | ||
c5aa993b JM |
2787 | switch (b->type) |
2788 | { | |
2789 | case bp_call_dummy: | |
c906108c | 2790 | |
c5aa993b | 2791 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2792 | cause problems when the inferior is rerun, so we better get |
2793 | rid of it. */ | |
2794 | ||
2795 | case bp_watchpoint_scope: | |
2796 | ||
2797 | /* Also get rid of scope breakpoints. */ | |
2798 | ||
2799 | case bp_shlib_event: | |
2800 | ||
2801 | /* Also remove solib event breakpoints. Their addresses may | |
2802 | have changed since the last time we ran the program. | |
2803 | Actually we may now be debugging against different target; | |
2804 | and so the solib backend that installed this breakpoint may | |
2805 | not be used in by the target. E.g., | |
2806 | ||
2807 | (gdb) file prog-linux | |
2808 | (gdb) run # native linux target | |
2809 | ... | |
2810 | (gdb) kill | |
2811 | (gdb) file prog-win.exe | |
2812 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2813 | */ | |
c906108c | 2814 | |
c5aa993b JM |
2815 | delete_breakpoint (b); |
2816 | break; | |
c906108c | 2817 | |
c5aa993b JM |
2818 | case bp_watchpoint: |
2819 | case bp_hardware_watchpoint: | |
2820 | case bp_read_watchpoint: | |
2821 | case bp_access_watchpoint: | |
3a5c3e22 PA |
2822 | { |
2823 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 2824 | |
3a5c3e22 PA |
2825 | /* Likewise for watchpoints on local expressions. */ |
2826 | if (w->exp_valid_block != NULL) | |
2827 | delete_breakpoint (b); | |
2828 | else if (context == inf_starting) | |
2829 | { | |
2830 | /* Reset val field to force reread of starting value in | |
2831 | insert_breakpoints. */ | |
2832 | if (w->val) | |
2833 | value_free (w->val); | |
2834 | w->val = NULL; | |
2835 | w->val_valid = 0; | |
c860120c | 2836 | } |
3a5c3e22 | 2837 | } |
c5aa993b JM |
2838 | break; |
2839 | default: | |
c5aa993b JM |
2840 | break; |
2841 | } | |
2842 | } | |
1c5cfe86 PA |
2843 | |
2844 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2845 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2846 | decref_bp_location (&bl); | |
1c5cfe86 | 2847 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2848 | } |
2849 | ||
6c95b8df PA |
2850 | /* These functions concern about actual breakpoints inserted in the |
2851 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2852 | we need to hop over the bkpt --- so we check for address space | |
2853 | match, not program space. */ | |
2854 | ||
c2c6d25f JM |
2855 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2856 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2857 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2858 | permanent breakpoint. | |
2859 | - When continuing from a location with an ordinary breakpoint, we | |
2860 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 2861 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
2862 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
2863 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2864 | |
c2c6d25f | 2865 | enum breakpoint_here |
6c95b8df | 2866 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2867 | { |
35df4500 | 2868 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2869 | int any_breakpoint_here = 0; |
c906108c | 2870 | |
35df4500 | 2871 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2872 | { |
35df4500 TJB |
2873 | if (bl->loc_type != bp_loc_software_breakpoint |
2874 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2875 | continue; |
2876 | ||
f1310107 | 2877 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2878 | if ((breakpoint_enabled (bl->owner) |
2879 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2880 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2881 | { |
2882 | if (overlay_debugging | |
35df4500 TJB |
2883 | && section_is_overlay (bl->section) |
2884 | && !section_is_mapped (bl->section)) | |
075f6582 | 2885 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2886 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2887 | return permanent_breakpoint_here; |
2888 | else | |
2889 | any_breakpoint_here = 1; | |
2890 | } | |
2891 | } | |
c906108c | 2892 | |
c2c6d25f | 2893 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2894 | } |
2895 | ||
1c5cfe86 PA |
2896 | /* Return true if there's a moribund breakpoint at PC. */ |
2897 | ||
2898 | int | |
6c95b8df | 2899 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2900 | { |
2901 | struct bp_location *loc; | |
2902 | int ix; | |
2903 | ||
2904 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2905 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2906 | return 1; |
2907 | ||
2908 | return 0; | |
2909 | } | |
c2c6d25f | 2910 | |
c36b740a | 2911 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2912 | inserted using regular breakpoint_chain / bp_location array |
2913 | mechanism. This does not check for single-step breakpoints, which | |
2914 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2915 | |
2916 | int | |
4a64f543 MS |
2917 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2918 | CORE_ADDR pc) | |
c906108c | 2919 | { |
35df4500 | 2920 | struct bp_location *bl, **blp_tmp; |
c906108c | 2921 | |
35df4500 | 2922 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2923 | { |
35df4500 TJB |
2924 | if (bl->loc_type != bp_loc_software_breakpoint |
2925 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2926 | continue; |
2927 | ||
35df4500 | 2928 | if (bl->inserted |
f1310107 | 2929 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2930 | { |
2931 | if (overlay_debugging | |
35df4500 TJB |
2932 | && section_is_overlay (bl->section) |
2933 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2934 | continue; /* unmapped overlay -- can't be a match */ |
2935 | else | |
2936 | return 1; | |
2937 | } | |
c5aa993b | 2938 | } |
c36b740a VP |
2939 | return 0; |
2940 | } | |
2941 | ||
2942 | /* Returns non-zero iff there's either regular breakpoint | |
2943 | or a single step breakpoint inserted at PC. */ | |
2944 | ||
2945 | int | |
6c95b8df | 2946 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2947 | { |
6c95b8df | 2948 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2949 | return 1; |
c906108c | 2950 | |
6c95b8df | 2951 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2952 | return 1; |
2953 | ||
c906108c SS |
2954 | return 0; |
2955 | } | |
2956 | ||
4fa8626c DJ |
2957 | /* This function returns non-zero iff there is a software breakpoint |
2958 | inserted at PC. */ | |
2959 | ||
2960 | int | |
3e43a32a MS |
2961 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2962 | CORE_ADDR pc) | |
4fa8626c | 2963 | { |
35df4500 | 2964 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2965 | |
35df4500 | 2966 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2967 | { |
35df4500 | 2968 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2969 | continue; |
2970 | ||
35df4500 TJB |
2971 | if (bl->inserted |
2972 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2973 | aspace, pc)) |
4fa8626c DJ |
2974 | { |
2975 | if (overlay_debugging | |
35df4500 TJB |
2976 | && section_is_overlay (bl->section) |
2977 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2978 | continue; /* unmapped overlay -- can't be a match */ |
2979 | else | |
2980 | return 1; | |
2981 | } | |
2982 | } | |
2983 | ||
1aafd4da | 2984 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2985 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2986 | return 1; |
2987 | ||
4fa8626c DJ |
2988 | return 0; |
2989 | } | |
2990 | ||
9093389c PA |
2991 | int |
2992 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2993 | CORE_ADDR addr, ULONGEST len) | |
2994 | { | |
2995 | struct breakpoint *bpt; | |
2996 | ||
2997 | ALL_BREAKPOINTS (bpt) | |
2998 | { | |
2999 | struct bp_location *loc; | |
3000 | ||
3001 | if (bpt->type != bp_hardware_watchpoint | |
3002 | && bpt->type != bp_access_watchpoint) | |
3003 | continue; | |
3004 | ||
3005 | if (!breakpoint_enabled (bpt)) | |
3006 | continue; | |
3007 | ||
3008 | for (loc = bpt->loc; loc; loc = loc->next) | |
3009 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3010 | { | |
3011 | CORE_ADDR l, h; | |
3012 | ||
3013 | /* Check for intersection. */ | |
3014 | l = max (loc->address, addr); | |
3015 | h = min (loc->address + loc->length, addr + len); | |
3016 | if (l < h) | |
3017 | return 1; | |
3018 | } | |
3019 | } | |
3020 | return 0; | |
3021 | } | |
3022 | ||
075f6582 DJ |
3023 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3024 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3025 | |
3026 | int | |
6c95b8df PA |
3027 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3028 | ptid_t ptid) | |
c906108c | 3029 | { |
35df4500 | 3030 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3031 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3032 | int thread = -1; |
4a306c9a | 3033 | int task = 0; |
a6f1cd96 | 3034 | |
35df4500 | 3035 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3036 | { |
35df4500 TJB |
3037 | if (bl->loc_type != bp_loc_software_breakpoint |
3038 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3039 | continue; |
3040 | ||
35df4500 TJB |
3041 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3042 | if (!breakpoint_enabled (bl->owner) | |
3043 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3044 | continue; |
3045 | ||
f1310107 | 3046 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3047 | continue; |
3048 | ||
35df4500 | 3049 | if (bl->owner->thread != -1) |
075f6582 | 3050 | { |
a6f1cd96 JB |
3051 | /* This is a thread-specific breakpoint. Check that ptid |
3052 | matches that thread. If thread hasn't been computed yet, | |
3053 | it is now time to do so. */ | |
3054 | if (thread == -1) | |
3055 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3056 | if (bl->owner->thread != thread) |
a6f1cd96 | 3057 | continue; |
075f6582 | 3058 | } |
a6f1cd96 | 3059 | |
35df4500 | 3060 | if (bl->owner->task != 0) |
4a306c9a JB |
3061 | { |
3062 | /* This is a task-specific breakpoint. Check that ptid | |
3063 | matches that task. If task hasn't been computed yet, | |
3064 | it is now time to do so. */ | |
3065 | if (task == 0) | |
3066 | task = ada_get_task_number (ptid); | |
35df4500 | 3067 | if (bl->owner->task != task) |
4a306c9a JB |
3068 | continue; |
3069 | } | |
3070 | ||
a6f1cd96 | 3071 | if (overlay_debugging |
35df4500 TJB |
3072 | && section_is_overlay (bl->section) |
3073 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3074 | continue; /* unmapped overlay -- can't be a match */ |
3075 | ||
3076 | return 1; | |
c5aa993b | 3077 | } |
c906108c SS |
3078 | |
3079 | return 0; | |
3080 | } | |
c906108c | 3081 | \f |
c5aa993b | 3082 | |
c906108c SS |
3083 | /* bpstat stuff. External routines' interfaces are documented |
3084 | in breakpoint.h. */ | |
3085 | ||
3086 | int | |
fba45db2 | 3087 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3088 | { |
533be4dd | 3089 | return (ep->type == bp_catchpoint); |
c906108c SS |
3090 | } |
3091 | ||
f431efe5 PA |
3092 | /* Frees any storage that is part of a bpstat. Does not walk the |
3093 | 'next' chain. */ | |
3094 | ||
3095 | static void | |
198757a8 VP |
3096 | bpstat_free (bpstat bs) |
3097 | { | |
3098 | if (bs->old_val != NULL) | |
3099 | value_free (bs->old_val); | |
9add0f1b | 3100 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3101 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3102 | xfree (bs); |
3103 | } | |
3104 | ||
c906108c SS |
3105 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3106 | Also free any storage that is part of a bpstat. */ | |
3107 | ||
3108 | void | |
fba45db2 | 3109 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3110 | { |
3111 | bpstat p; | |
3112 | bpstat q; | |
3113 | ||
3114 | if (bsp == 0) | |
3115 | return; | |
3116 | p = *bsp; | |
3117 | while (p != NULL) | |
3118 | { | |
3119 | q = p->next; | |
198757a8 | 3120 | bpstat_free (p); |
c906108c SS |
3121 | p = q; |
3122 | } | |
3123 | *bsp = NULL; | |
3124 | } | |
3125 | ||
3126 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3127 | is part of the bpstat is copied as well. */ | |
3128 | ||
3129 | bpstat | |
fba45db2 | 3130 | bpstat_copy (bpstat bs) |
c906108c SS |
3131 | { |
3132 | bpstat p = NULL; | |
3133 | bpstat tmp; | |
3134 | bpstat retval = NULL; | |
3135 | ||
3136 | if (bs == NULL) | |
3137 | return bs; | |
3138 | ||
3139 | for (; bs != NULL; bs = bs->next) | |
3140 | { | |
3141 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3142 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3143 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3144 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3145 | if (bs->old_val != NULL) |
3c3185ac JK |
3146 | { |
3147 | tmp->old_val = value_copy (bs->old_val); | |
3148 | release_value (tmp->old_val); | |
3149 | } | |
31cc81e9 | 3150 | |
c906108c SS |
3151 | if (p == NULL) |
3152 | /* This is the first thing in the chain. */ | |
3153 | retval = tmp; | |
3154 | else | |
3155 | p->next = tmp; | |
3156 | p = tmp; | |
3157 | } | |
3158 | p->next = NULL; | |
3159 | return retval; | |
3160 | } | |
3161 | ||
4a64f543 | 3162 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3163 | |
3164 | bpstat | |
fba45db2 | 3165 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3166 | { |
c5aa993b JM |
3167 | if (bsp == NULL) |
3168 | return NULL; | |
c906108c | 3169 | |
c5aa993b JM |
3170 | for (; bsp != NULL; bsp = bsp->next) |
3171 | { | |
f431efe5 | 3172 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3173 | return bsp; |
3174 | } | |
c906108c SS |
3175 | return NULL; |
3176 | } | |
3177 | ||
4a64f543 MS |
3178 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3179 | stopped at. *BSP upon return is a bpstat which points to the | |
3180 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3181 | good for anything but further calls to bpstat_num). | |
3182 | ||
8671a17b PA |
3183 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3184 | Return -1 if stopped at a breakpoint that has been deleted since | |
3185 | we set it. | |
3186 | Return 1 otherwise. */ | |
c906108c SS |
3187 | |
3188 | int | |
8671a17b | 3189 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3190 | { |
3191 | struct breakpoint *b; | |
3192 | ||
3193 | if ((*bsp) == NULL) | |
3194 | return 0; /* No more breakpoint values */ | |
8671a17b | 3195 | |
4a64f543 MS |
3196 | /* We assume we'll never have several bpstats that correspond to a |
3197 | single breakpoint -- otherwise, this function might return the | |
3198 | same number more than once and this will look ugly. */ | |
f431efe5 | 3199 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3200 | *bsp = (*bsp)->next; |
3201 | if (b == NULL) | |
3202 | return -1; /* breakpoint that's been deleted since */ | |
3203 | ||
3204 | *num = b->number; /* We have its number */ | |
3205 | return 1; | |
c906108c SS |
3206 | } |
3207 | ||
e93ca019 | 3208 | /* See breakpoint.h. */ |
c906108c SS |
3209 | |
3210 | void | |
e93ca019 | 3211 | bpstat_clear_actions (void) |
c906108c | 3212 | { |
e93ca019 JK |
3213 | struct thread_info *tp; |
3214 | bpstat bs; | |
3215 | ||
3216 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3217 | return; | |
3218 | ||
3219 | tp = find_thread_ptid (inferior_ptid); | |
3220 | if (tp == NULL) | |
3221 | return; | |
3222 | ||
3223 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 3224 | { |
9add0f1b | 3225 | decref_counted_command_line (&bs->commands); |
abf85f46 | 3226 | |
c906108c SS |
3227 | if (bs->old_val != NULL) |
3228 | { | |
3229 | value_free (bs->old_val); | |
3230 | bs->old_val = NULL; | |
3231 | } | |
3232 | } | |
3233 | } | |
3234 | ||
f3b1572e PA |
3235 | /* Called when a command is about to proceed the inferior. */ |
3236 | ||
3237 | static void | |
3238 | breakpoint_about_to_proceed (void) | |
3239 | { | |
3240 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3241 | { | |
3242 | struct thread_info *tp = inferior_thread (); | |
3243 | ||
3244 | /* Allow inferior function calls in breakpoint commands to not | |
3245 | interrupt the command list. When the call finishes | |
3246 | successfully, the inferior will be standing at the same | |
3247 | breakpoint as if nothing happened. */ | |
16c381f0 | 3248 | if (tp->control.in_infcall) |
f3b1572e PA |
3249 | return; |
3250 | } | |
3251 | ||
3252 | breakpoint_proceeded = 1; | |
3253 | } | |
3254 | ||
4a64f543 MS |
3255 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3256 | command. */ | |
c906108c | 3257 | static void |
4efb68b1 | 3258 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3259 | { |
3260 | executing_breakpoint_commands = 0; | |
3261 | } | |
3262 | ||
abf85f46 JK |
3263 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
3264 | or its equivalent. */ | |
3265 | ||
3266 | static int | |
3267 | command_line_is_silent (struct command_line *cmd) | |
3268 | { | |
3269 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
3270 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
3271 | } | |
3272 | ||
4a64f543 MS |
3273 | /* Execute all the commands associated with all the breakpoints at |
3274 | this location. Any of these commands could cause the process to | |
3275 | proceed beyond this point, etc. We look out for such changes by | |
3276 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3277 | |
347bddb7 PA |
3278 | Returns true if a breakpoint command resumed the inferior. In that |
3279 | case, it is the caller's responsibility to recall it again with the | |
3280 | bpstat of the current thread. */ | |
3281 | ||
3282 | static int | |
3283 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3284 | { |
3285 | bpstat bs; | |
3286 | struct cleanup *old_chain; | |
347bddb7 | 3287 | int again = 0; |
c906108c SS |
3288 | |
3289 | /* Avoid endless recursion if a `source' command is contained | |
3290 | in bs->commands. */ | |
3291 | if (executing_breakpoint_commands) | |
347bddb7 | 3292 | return 0; |
c906108c SS |
3293 | |
3294 | executing_breakpoint_commands = 1; | |
3295 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3296 | ||
cf6c5ffb TT |
3297 | prevent_dont_repeat (); |
3298 | ||
4a64f543 | 3299 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3300 | bs = *bsp; |
3301 | ||
3302 | breakpoint_proceeded = 0; | |
3303 | for (; bs != NULL; bs = bs->next) | |
3304 | { | |
9add0f1b | 3305 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3306 | struct command_line *cmd; |
3307 | struct cleanup *this_cmd_tree_chain; | |
3308 | ||
3309 | /* Take ownership of the BSP's command tree, if it has one. | |
3310 | ||
3311 | The command tree could legitimately contain commands like | |
3312 | 'step' and 'next', which call clear_proceed_status, which | |
3313 | frees stop_bpstat's command tree. To make sure this doesn't | |
3314 | free the tree we're executing out from under us, we need to | |
3315 | take ownership of the tree ourselves. Since a given bpstat's | |
3316 | commands are only executed once, we don't need to copy it; we | |
3317 | can clear the pointer in the bpstat, and make sure we free | |
3318 | the tree when we're done. */ | |
9add0f1b TT |
3319 | ccmd = bs->commands; |
3320 | bs->commands = NULL; | |
abf85f46 JK |
3321 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
3322 | cmd = ccmd ? ccmd->commands : NULL; | |
3323 | if (command_line_is_silent (cmd)) | |
3324 | { | |
3325 | /* The action has been already done by bpstat_stop_status. */ | |
3326 | cmd = cmd->next; | |
3327 | } | |
6c50ab1c | 3328 | |
c906108c SS |
3329 | while (cmd != NULL) |
3330 | { | |
3331 | execute_control_command (cmd); | |
3332 | ||
3333 | if (breakpoint_proceeded) | |
3334 | break; | |
3335 | else | |
3336 | cmd = cmd->next; | |
3337 | } | |
6c50ab1c JB |
3338 | |
3339 | /* We can free this command tree now. */ | |
3340 | do_cleanups (this_cmd_tree_chain); | |
3341 | ||
c906108c | 3342 | if (breakpoint_proceeded) |
32c1e744 VP |
3343 | { |
3344 | if (target_can_async_p ()) | |
347bddb7 PA |
3345 | /* If we are in async mode, then the target might be still |
3346 | running, not stopped at any breakpoint, so nothing for | |
3347 | us to do here -- just return to the event loop. */ | |
3348 | ; | |
32c1e744 VP |
3349 | else |
3350 | /* In sync mode, when execute_control_command returns | |
3351 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3352 | Breakpoint commands for that stop were not run, since |
3353 | execute_command does not run breakpoint commands -- | |
3354 | only command_line_handler does, but that one is not | |
3355 | involved in execution of breakpoint commands. So, we | |
3356 | can now execute breakpoint commands. It should be | |
3357 | noted that making execute_command do bpstat actions is | |
3358 | not an option -- in this case we'll have recursive | |
3359 | invocation of bpstat for each breakpoint with a | |
3360 | command, and can easily blow up GDB stack. Instead, we | |
3361 | return true, which will trigger the caller to recall us | |
3362 | with the new stop_bpstat. */ | |
3363 | again = 1; | |
3364 | break; | |
32c1e744 | 3365 | } |
c906108c | 3366 | } |
c2b8ed2c | 3367 | do_cleanups (old_chain); |
347bddb7 PA |
3368 | return again; |
3369 | } | |
3370 | ||
3371 | void | |
3372 | bpstat_do_actions (void) | |
3373 | { | |
353d1d73 JK |
3374 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
3375 | ||
347bddb7 PA |
3376 | /* Do any commands attached to breakpoint we are stopped at. */ |
3377 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3378 | && target_has_execution | |
3379 | && !is_exited (inferior_ptid) | |
3380 | && !is_executing (inferior_ptid)) | |
3381 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3382 | and only return when it is stopped at the next breakpoint, we | |
3383 | keep doing breakpoint actions until it returns false to | |
3384 | indicate the inferior was not resumed. */ | |
16c381f0 | 3385 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3386 | break; |
353d1d73 JK |
3387 | |
3388 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
3389 | } |
3390 | ||
fa4727a6 DJ |
3391 | /* Print out the (old or new) value associated with a watchpoint. */ |
3392 | ||
3393 | static void | |
3394 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3395 | { | |
3396 | if (val == NULL) | |
3397 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3398 | else | |
79a45b7d TT |
3399 | { |
3400 | struct value_print_options opts; | |
3401 | get_user_print_options (&opts); | |
3402 | value_print (val, stream, &opts); | |
3403 | } | |
fa4727a6 DJ |
3404 | } |
3405 | ||
e514a9d6 | 3406 | /* Generic routine for printing messages indicating why we |
4a64f543 | 3407 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3408 | 'print_it' in the bpstat structure. Under some circumstances we |
3409 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3410 | normal_stop(). */ |
e514a9d6 JM |
3411 | |
3412 | static enum print_stop_action | |
3413 | print_bp_stop_message (bpstat bs) | |
3414 | { | |
3415 | switch (bs->print_it) | |
3416 | { | |
3417 | case print_it_noop: | |
4a64f543 | 3418 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3419 | return PRINT_UNKNOWN; |
3420 | break; | |
3421 | ||
3422 | case print_it_done: | |
3423 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3424 | relevant messages. */ |
e514a9d6 JM |
3425 | return PRINT_SRC_AND_LOC; |
3426 | break; | |
3427 | ||
3428 | case print_it_normal: | |
4f8d1dc6 | 3429 | { |
f431efe5 PA |
3430 | struct breakpoint *b = bs->breakpoint_at; |
3431 | ||
1a6a67de TJB |
3432 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3433 | which has since been deleted. */ | |
3434 | if (b == NULL) | |
3435 | return PRINT_UNKNOWN; | |
3436 | ||
348d480f PA |
3437 | /* Normal case. Call the breakpoint's print_it method. */ |
3438 | return b->ops->print_it (bs); | |
4f8d1dc6 | 3439 | } |
348d480f | 3440 | break; |
3086aeae | 3441 | |
e514a9d6 | 3442 | default: |
8e65ff28 | 3443 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3444 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3445 | break; |
c906108c | 3446 | } |
c906108c SS |
3447 | } |
3448 | ||
e514a9d6 JM |
3449 | /* Print a message indicating what happened. This is called from |
3450 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
3451 | list - a list of the eventpoints that caused this stop. KIND is |
3452 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
3453 | routine calls the generic print routine for printing a message |
3454 | about reasons for stopping. This will print (for example) the | |
3455 | "Breakpoint n," part of the output. The return value of this | |
3456 | routine is one of: | |
c906108c | 3457 | |
4a64f543 | 3458 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3459 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3460 | code to print the location. An example is |
c5aa993b JM |
3461 | "Breakpoint 1, " which should be followed by |
3462 | the location. | |
917317f4 | 3463 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3464 | to also print the location part of the message. |
3465 | An example is the catch/throw messages, which | |
4a64f543 | 3466 | don't require a location appended to the end. |
917317f4 | 3467 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3468 | further info to be printed. */ |
c906108c | 3469 | |
917317f4 | 3470 | enum print_stop_action |
36dfb11c | 3471 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
3472 | { |
3473 | int val; | |
c5aa993b | 3474 | |
c906108c | 3475 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3476 | (Currently all watchpoints go on the bpstat whether hit or not. |
3477 | That probably could (should) be changed, provided care is taken | |
c906108c | 3478 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3479 | for (; bs; bs = bs->next) |
3480 | { | |
3481 | val = print_bp_stop_message (bs); | |
3482 | if (val == PRINT_SRC_ONLY | |
3483 | || val == PRINT_SRC_AND_LOC | |
3484 | || val == PRINT_NOTHING) | |
3485 | return val; | |
3486 | } | |
c906108c | 3487 | |
36dfb11c TT |
3488 | /* If we had hit a shared library event breakpoint, |
3489 | print_bp_stop_message would print out this message. If we hit an | |
3490 | OS-level shared library event, do the same thing. */ | |
3491 | if (kind == TARGET_WAITKIND_LOADED) | |
3492 | { | |
3493 | ui_out_text (current_uiout, _("Stopped due to shared library event\n")); | |
3494 | if (ui_out_is_mi_like_p (current_uiout)) | |
3495 | ui_out_field_string (current_uiout, "reason", | |
3496 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
3497 | return PRINT_NOTHING; | |
3498 | } | |
3499 | ||
e514a9d6 | 3500 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3501 | with and nothing was printed. */ |
917317f4 | 3502 | return PRINT_UNKNOWN; |
c906108c SS |
3503 | } |
3504 | ||
4a64f543 MS |
3505 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3506 | used inside a catch_errors to evaluate the breakpoint condition. | |
3507 | The argument is a "struct expression *" that has been cast to a | |
3508 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3509 | |
3510 | static int | |
4efb68b1 | 3511 | breakpoint_cond_eval (void *exp) |
c906108c | 3512 | { |
278cd55f | 3513 | struct value *mark = value_mark (); |
c5aa993b | 3514 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3515 | |
c906108c SS |
3516 | value_free_to_mark (mark); |
3517 | return i; | |
3518 | } | |
3519 | ||
5760d0ab | 3520 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3521 | |
3522 | static bpstat | |
5760d0ab | 3523 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3524 | { |
3525 | bpstat bs; | |
3526 | ||
3527 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3528 | bs->next = NULL; |
3529 | **bs_link_pointer = bs; | |
3530 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3531 | bs->breakpoint_at = bl->owner; |
3532 | bs->bp_location_at = bl; | |
3533 | incref_bp_location (bl); | |
c906108c SS |
3534 | /* If the condition is false, etc., don't do the commands. */ |
3535 | bs->commands = NULL; | |
3536 | bs->old_val = NULL; | |
3537 | bs->print_it = print_it_normal; | |
3538 | return bs; | |
3539 | } | |
3540 | \f | |
d983da9c DJ |
3541 | /* The target has stopped with waitstatus WS. Check if any hardware |
3542 | watchpoints have triggered, according to the target. */ | |
3543 | ||
3544 | int | |
3545 | watchpoints_triggered (struct target_waitstatus *ws) | |
3546 | { | |
d92524f1 | 3547 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3548 | CORE_ADDR addr; |
3549 | struct breakpoint *b; | |
3550 | ||
3551 | if (!stopped_by_watchpoint) | |
3552 | { | |
3553 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3554 | as not triggered. */ | |
3555 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3556 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3557 | { |
3558 | struct watchpoint *w = (struct watchpoint *) b; | |
3559 | ||
3560 | w->watchpoint_triggered = watch_triggered_no; | |
3561 | } | |
d983da9c DJ |
3562 | |
3563 | return 0; | |
3564 | } | |
3565 | ||
3566 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3567 | { | |
3568 | /* We were stopped by a watchpoint, but we don't know where. | |
3569 | Mark all watchpoints as unknown. */ | |
3570 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3571 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3572 | { |
3573 | struct watchpoint *w = (struct watchpoint *) b; | |
3574 | ||
3575 | w->watchpoint_triggered = watch_triggered_unknown; | |
3576 | } | |
d983da9c DJ |
3577 | |
3578 | return stopped_by_watchpoint; | |
3579 | } | |
3580 | ||
3581 | /* The target could report the data address. Mark watchpoints | |
3582 | affected by this data address as triggered, and all others as not | |
3583 | triggered. */ | |
3584 | ||
3585 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3586 | if (is_hardware_watchpoint (b)) |
d983da9c | 3587 | { |
3a5c3e22 | 3588 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 3589 | struct bp_location *loc; |
d983da9c | 3590 | |
3a5c3e22 | 3591 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 3592 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 3593 | { |
3a5c3e22 | 3594 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 3595 | { |
3a5c3e22 PA |
3596 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
3597 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
3598 | |
3599 | if (newaddr == start) | |
3600 | { | |
3a5c3e22 | 3601 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3602 | break; |
3603 | } | |
3604 | } | |
3605 | /* Exact match not required. Within range is sufficient. */ | |
3606 | else if (target_watchpoint_addr_within_range (¤t_target, | |
3607 | addr, loc->address, | |
3608 | loc->length)) | |
3609 | { | |
3a5c3e22 | 3610 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3611 | break; |
3612 | } | |
3613 | } | |
d983da9c DJ |
3614 | } |
3615 | ||
3616 | return 1; | |
3617 | } | |
3618 | ||
c906108c SS |
3619 | /* Possible return values for watchpoint_check (this can't be an enum |
3620 | because of check_errors). */ | |
3621 | /* The watchpoint has been deleted. */ | |
3622 | #define WP_DELETED 1 | |
3623 | /* The value has changed. */ | |
3624 | #define WP_VALUE_CHANGED 2 | |
3625 | /* The value has not changed. */ | |
3626 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3627 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3628 | #define WP_IGNORE 4 | |
c906108c SS |
3629 | |
3630 | #define BP_TEMPFLAG 1 | |
3631 | #define BP_HARDWAREFLAG 2 | |
3632 | ||
4a64f543 MS |
3633 | /* Evaluate watchpoint condition expression and check if its value |
3634 | changed. | |
553e4c11 JB |
3635 | |
3636 | P should be a pointer to struct bpstat, but is defined as a void * | |
3637 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3638 | |
3639 | static int | |
4efb68b1 | 3640 | watchpoint_check (void *p) |
c906108c SS |
3641 | { |
3642 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 3643 | struct watchpoint *b; |
c906108c SS |
3644 | struct frame_info *fr; |
3645 | int within_current_scope; | |
3646 | ||
f431efe5 | 3647 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3648 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 3649 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 3650 | |
f6bc2008 PA |
3651 | /* If this is a local watchpoint, we only want to check if the |
3652 | watchpoint frame is in scope if the current thread is the thread | |
3653 | that was used to create the watchpoint. */ | |
3654 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3655 | return WP_IGNORE; |
f6bc2008 | 3656 | |
c906108c SS |
3657 | if (b->exp_valid_block == NULL) |
3658 | within_current_scope = 1; | |
3659 | else | |
3660 | { | |
edb3359d DJ |
3661 | struct frame_info *frame = get_current_frame (); |
3662 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3663 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3664 | ||
4a64f543 MS |
3665 | /* in_function_epilogue_p() returns a non-zero value if we're |
3666 | still in the function but the stack frame has already been | |
3667 | invalidated. Since we can't rely on the values of local | |
3668 | variables after the stack has been destroyed, we are treating | |
3669 | the watchpoint in that state as `not changed' without further | |
3670 | checking. Don't mark watchpoints as changed if the current | |
3671 | frame is in an epilogue - even if they are in some other | |
3672 | frame, our view of the stack is likely to be wrong and | |
3673 | frame_find_by_id could error out. */ | |
a0f49112 | 3674 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3675 | return WP_IGNORE; |
a0f49112 | 3676 | |
101dcfbe | 3677 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3678 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3679 | |
3680 | /* If we've gotten confused in the unwinder, we might have | |
3681 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3682 | if (within_current_scope) |
3683 | { | |
3684 | struct symbol *function; | |
3685 | ||
3686 | function = get_frame_function (fr); | |
3687 | if (function == NULL | |
3688 | || !contained_in (b->exp_valid_block, | |
3689 | SYMBOL_BLOCK_VALUE (function))) | |
3690 | within_current_scope = 0; | |
3691 | } | |
69fbadd5 | 3692 | |
edb3359d | 3693 | if (within_current_scope) |
c906108c SS |
3694 | /* If we end up stopping, the current frame will get selected |
3695 | in normal_stop. So this call to select_frame won't affect | |
3696 | the user. */ | |
0f7d239c | 3697 | select_frame (fr); |
c906108c | 3698 | } |
c5aa993b | 3699 | |
c906108c SS |
3700 | if (within_current_scope) |
3701 | { | |
4a64f543 MS |
3702 | /* We use value_{,free_to_}mark because it could be a *long* |
3703 | time before we return to the command level and call | |
3704 | free_all_values. We can't call free_all_values because we | |
3705 | might be in the middle of evaluating a function call. */ | |
c906108c | 3706 | |
0cf6dd15 | 3707 | int pc = 0; |
9c06b0b4 | 3708 | struct value *mark; |
fa4727a6 DJ |
3709 | struct value *new_val; |
3710 | ||
3a5c3e22 | 3711 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
3712 | /* Since we don't know the exact trigger address (from |
3713 | stopped_data_address), just tell the user we've triggered | |
3714 | a mask watchpoint. */ | |
3715 | return WP_VALUE_CHANGED; | |
3716 | ||
3717 | mark = value_mark (); | |
0cf6dd15 | 3718 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3719 | |
4a64f543 MS |
3720 | /* We use value_equal_contents instead of value_equal because |
3721 | the latter coerces an array to a pointer, thus comparing just | |
3722 | the address of the array instead of its contents. This is | |
3723 | not what we want. */ | |
fa4727a6 | 3724 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3725 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3726 | { |
fa4727a6 DJ |
3727 | if (new_val != NULL) |
3728 | { | |
3729 | release_value (new_val); | |
3730 | value_free_to_mark (mark); | |
3731 | } | |
c906108c SS |
3732 | bs->old_val = b->val; |
3733 | b->val = new_val; | |
fa4727a6 | 3734 | b->val_valid = 1; |
c906108c SS |
3735 | return WP_VALUE_CHANGED; |
3736 | } | |
3737 | else | |
3738 | { | |
60e1c644 | 3739 | /* Nothing changed. */ |
c906108c | 3740 | value_free_to_mark (mark); |
c906108c SS |
3741 | return WP_VALUE_NOT_CHANGED; |
3742 | } | |
3743 | } | |
3744 | else | |
3745 | { | |
79a45e25 PA |
3746 | struct ui_out *uiout = current_uiout; |
3747 | ||
c906108c | 3748 | /* This seems like the only logical thing to do because |
c5aa993b JM |
3749 | if we temporarily ignored the watchpoint, then when |
3750 | we reenter the block in which it is valid it contains | |
3751 | garbage (in the case of a function, it may have two | |
3752 | garbage values, one before and one after the prologue). | |
3753 | So we can't even detect the first assignment to it and | |
3754 | watch after that (since the garbage may or may not equal | |
3755 | the first value assigned). */ | |
348d480f PA |
3756 | /* We print all the stop information in |
3757 | breakpoint_ops->print_it, but in this case, by the time we | |
3758 | call breakpoint_ops->print_it this bp will be deleted | |
3759 | already. So we have no choice but print the information | |
3760 | here. */ | |
9dc5e2a9 | 3761 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3762 | ui_out_field_string |
3763 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3764 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 3765 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
3766 | ui_out_text (uiout, |
3767 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3768 | which its expression is valid.\n"); |
4ce44c66 | 3769 | |
cdac0397 | 3770 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 3771 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 3772 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3773 | |
3774 | return WP_DELETED; | |
3775 | } | |
3776 | } | |
3777 | ||
18a18393 | 3778 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
3779 | breakpoint location BL. This function does not check if we should |
3780 | stop, only if BL explains the stop. */ | |
3781 | ||
18a18393 | 3782 | static int |
6c95b8df PA |
3783 | bpstat_check_location (const struct bp_location *bl, |
3784 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3785 | { |
3786 | struct breakpoint *b = bl->owner; | |
3787 | ||
348d480f | 3788 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
3789 | gdb_assert (b != NULL); |
3790 | ||
348d480f | 3791 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); |
18a18393 VP |
3792 | } |
3793 | ||
3a5c3e22 PA |
3794 | /* Determine if the watched values have actually changed, and we |
3795 | should stop. If not, set BS->stop to 0. */ | |
3796 | ||
18a18393 VP |
3797 | static void |
3798 | bpstat_check_watchpoint (bpstat bs) | |
3799 | { | |
2bdf28a0 | 3800 | const struct bp_location *bl; |
3a5c3e22 | 3801 | struct watchpoint *b; |
2bdf28a0 JK |
3802 | |
3803 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3804 | bl = bs->bp_location_at; |
2bdf28a0 | 3805 | gdb_assert (bl != NULL); |
3a5c3e22 | 3806 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 3807 | gdb_assert (b != NULL); |
18a18393 | 3808 | |
18a18393 | 3809 | { |
18a18393 VP |
3810 | int must_check_value = 0; |
3811 | ||
3a5c3e22 | 3812 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
3813 | /* For a software watchpoint, we must always check the |
3814 | watched value. */ | |
3815 | must_check_value = 1; | |
3816 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3817 | /* We have a hardware watchpoint (read, write, or access) | |
3818 | and the target earlier reported an address watched by | |
3819 | this watchpoint. */ | |
3820 | must_check_value = 1; | |
3821 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 3822 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
3823 | /* We were stopped by a hardware watchpoint, but the target could |
3824 | not report the data address. We must check the watchpoint's | |
3825 | value. Access and read watchpoints are out of luck; without | |
3826 | a data address, we can't figure it out. */ | |
3827 | must_check_value = 1; | |
3a5c3e22 | 3828 | |
18a18393 VP |
3829 | if (must_check_value) |
3830 | { | |
3e43a32a MS |
3831 | char *message |
3832 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 3833 | b->base.number); |
18a18393 VP |
3834 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3835 | int e = catch_errors (watchpoint_check, bs, message, | |
3836 | RETURN_MASK_ALL); | |
3837 | do_cleanups (cleanups); | |
3838 | switch (e) | |
3839 | { | |
3840 | case WP_DELETED: | |
3841 | /* We've already printed what needs to be printed. */ | |
3842 | bs->print_it = print_it_done; | |
3843 | /* Stop. */ | |
3844 | break; | |
60e1c644 PA |
3845 | case WP_IGNORE: |
3846 | bs->print_it = print_it_noop; | |
3847 | bs->stop = 0; | |
3848 | break; | |
18a18393 | 3849 | case WP_VALUE_CHANGED: |
3a5c3e22 | 3850 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 3851 | { |
85d721b8 PA |
3852 | /* There are two cases to consider here: |
3853 | ||
4a64f543 | 3854 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3855 | In that case, trust the target, and always report |
3856 | the watchpoint hit to the user. Even though | |
3857 | reads don't cause value changes, the value may | |
3858 | have changed since the last time it was read, and | |
3859 | since we're not trapping writes, we will not see | |
3860 | those, and as such we should ignore our notion of | |
3861 | old value. | |
3862 | ||
4a64f543 | 3863 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3864 | reads and writes. There are two ways this may |
3865 | happen: | |
3866 | ||
4a64f543 | 3867 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3868 | reads only, but can break on accesses (reads or |
3869 | writes), such as e.g., x86. We detect this case | |
3870 | at the time we try to insert read watchpoints. | |
3871 | ||
4a64f543 | 3872 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3873 | watchpoints, but, the user set an access or write |
3874 | watchpoint watching the same memory as this read | |
3875 | watchpoint. | |
3876 | ||
3877 | If we're watching memory writes as well as reads, | |
3878 | ignore watchpoint hits when we find that the | |
3879 | value hasn't changed, as reads don't cause | |
3880 | changes. This still gives false positives when | |
3881 | the program writes the same value to memory as | |
3882 | what there was already in memory (we will confuse | |
3883 | it for a read), but it's much better than | |
3884 | nothing. */ | |
3885 | ||
3886 | int other_write_watchpoint = 0; | |
3887 | ||
3888 | if (bl->watchpoint_type == hw_read) | |
3889 | { | |
3890 | struct breakpoint *other_b; | |
3891 | ||
3892 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
3893 | if (other_b->type == bp_hardware_watchpoint |
3894 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 3895 | { |
3a5c3e22 PA |
3896 | struct watchpoint *other_w = |
3897 | (struct watchpoint *) other_b; | |
3898 | ||
3899 | if (other_w->watchpoint_triggered | |
3900 | == watch_triggered_yes) | |
3901 | { | |
3902 | other_write_watchpoint = 1; | |
3903 | break; | |
3904 | } | |
85d721b8 PA |
3905 | } |
3906 | } | |
3907 | ||
3908 | if (other_write_watchpoint | |
3909 | || bl->watchpoint_type == hw_access) | |
3910 | { | |
3911 | /* We're watching the same memory for writes, | |
3912 | and the value changed since the last time we | |
3913 | updated it, so this trap must be for a write. | |
3914 | Ignore it. */ | |
3915 | bs->print_it = print_it_noop; | |
3916 | bs->stop = 0; | |
3917 | } | |
18a18393 VP |
3918 | } |
3919 | break; | |
3920 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
3921 | if (b->base.type == bp_hardware_watchpoint |
3922 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
3923 | { |
3924 | /* Don't stop: write watchpoints shouldn't fire if | |
3925 | the value hasn't changed. */ | |
3926 | bs->print_it = print_it_noop; | |
3927 | bs->stop = 0; | |
3928 | } | |
3929 | /* Stop. */ | |
3930 | break; | |
3931 | default: | |
3932 | /* Can't happen. */ | |
3933 | case 0: | |
3934 | /* Error from catch_errors. */ | |
3a5c3e22 | 3935 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 3936 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
3937 | /* We've already printed what needs to be printed. */ |
3938 | bs->print_it = print_it_done; | |
3939 | break; | |
3940 | } | |
3941 | } | |
3942 | else /* must_check_value == 0 */ | |
3943 | { | |
3944 | /* This is a case where some watchpoint(s) triggered, but | |
3945 | not at the address of this watchpoint, or else no | |
3946 | watchpoint triggered after all. So don't print | |
3947 | anything for this watchpoint. */ | |
3948 | bs->print_it = print_it_noop; | |
3949 | bs->stop = 0; | |
3950 | } | |
3951 | } | |
3952 | } | |
3953 | ||
3954 | ||
3955 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3956 | of breakpoint referred to by BS. If we should not stop for this | |
3957 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 3958 | |
18a18393 VP |
3959 | static void |
3960 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3961 | { | |
3962 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3963 | const struct bp_location *bl; |
3964 | struct breakpoint *b; | |
3965 | ||
3966 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3967 | bl = bs->bp_location_at; |
2bdf28a0 | 3968 | gdb_assert (bl != NULL); |
f431efe5 | 3969 | b = bs->breakpoint_at; |
2bdf28a0 | 3970 | gdb_assert (b != NULL); |
18a18393 VP |
3971 | |
3972 | if (frame_id_p (b->frame_id) | |
edb3359d | 3973 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3974 | bs->stop = 0; |
3975 | else if (bs->stop) | |
3976 | { | |
3977 | int value_is_zero = 0; | |
60e1c644 PA |
3978 | struct expression *cond; |
3979 | ||
7371cf6d PM |
3980 | /* Evaluate Python breakpoints that have a "stop" |
3981 | method implemented. */ | |
3982 | if (b->py_bp_object) | |
3983 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
3984 | ||
60e1c644 | 3985 | if (is_watchpoint (b)) |
3a5c3e22 PA |
3986 | { |
3987 | struct watchpoint *w = (struct watchpoint *) b; | |
3988 | ||
3989 | cond = w->cond_exp; | |
3990 | } | |
60e1c644 PA |
3991 | else |
3992 | cond = bl->cond; | |
3993 | ||
f431efe5 | 3994 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 3995 | { |
60e1c644 | 3996 | int within_current_scope = 1; |
3a5c3e22 | 3997 | struct watchpoint * w; |
60e1c644 | 3998 | |
c5bc3a77 DJ |
3999 | /* We use value_mark and value_free_to_mark because it could |
4000 | be a long time before we return to the command level and | |
4001 | call free_all_values. We can't call free_all_values | |
4002 | because we might be in the middle of evaluating a | |
4003 | function call. */ | |
4004 | struct value *mark = value_mark (); | |
4005 | ||
3a5c3e22 PA |
4006 | if (is_watchpoint (b)) |
4007 | w = (struct watchpoint *) b; | |
4008 | else | |
4009 | w = NULL; | |
4010 | ||
edb3359d DJ |
4011 | /* Need to select the frame, with all that implies so that |
4012 | the conditions will have the right context. Because we | |
4013 | use the frame, we will not see an inlined function's | |
4014 | variables when we arrive at a breakpoint at the start | |
4015 | of the inlined function; the current frame will be the | |
4016 | call site. */ | |
3a5c3e22 | 4017 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
4018 | select_frame (get_current_frame ()); |
4019 | else | |
4020 | { | |
4021 | struct frame_info *frame; | |
4022 | ||
4023 | /* For local watchpoint expressions, which particular | |
4024 | instance of a local is being watched matters, so we | |
4025 | keep track of the frame to evaluate the expression | |
4026 | in. To evaluate the condition however, it doesn't | |
4027 | really matter which instantiation of the function | |
4028 | where the condition makes sense triggers the | |
4029 | watchpoint. This allows an expression like "watch | |
4030 | global if q > 10" set in `func', catch writes to | |
4031 | global on all threads that call `func', or catch | |
4032 | writes on all recursive calls of `func' by a single | |
4033 | thread. We simply always evaluate the condition in | |
4034 | the innermost frame that's executing where it makes | |
4035 | sense to evaluate the condition. It seems | |
4036 | intuitive. */ | |
3a5c3e22 | 4037 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
4038 | if (frame != NULL) |
4039 | select_frame (frame); | |
4040 | else | |
4041 | within_current_scope = 0; | |
4042 | } | |
4043 | if (within_current_scope) | |
4044 | value_is_zero | |
4045 | = catch_errors (breakpoint_cond_eval, cond, | |
4046 | "Error in testing breakpoint condition:\n", | |
4047 | RETURN_MASK_ALL); | |
4048 | else | |
4049 | { | |
4050 | warning (_("Watchpoint condition cannot be tested " | |
4051 | "in the current scope")); | |
4052 | /* If we failed to set the right context for this | |
4053 | watchpoint, unconditionally report it. */ | |
4054 | value_is_zero = 0; | |
4055 | } | |
4a64f543 | 4056 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4057 | value_free_to_mark (mark); |
18a18393 | 4058 | } |
60e1c644 PA |
4059 | |
4060 | if (cond && value_is_zero) | |
18a18393 VP |
4061 | { |
4062 | bs->stop = 0; | |
4063 | } | |
4064 | else if (b->thread != -1 && b->thread != thread_id) | |
4065 | { | |
4066 | bs->stop = 0; | |
4067 | } | |
4068 | else if (b->ignore_count > 0) | |
4069 | { | |
4070 | b->ignore_count--; | |
4071 | annotate_ignore_count_change (); | |
4072 | bs->stop = 0; | |
4a64f543 | 4073 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4074 | ++(b->hit_count); |
8d3788bd | 4075 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4076 | } |
4077 | } | |
4078 | } | |
4079 | ||
4080 | ||
9709f61c | 4081 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4082 | BP_ADDR in thread PTID. |
c906108c | 4083 | |
d983da9c | 4084 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4085 | don't understand this stop. Result is a chain of bpstat's such |
4086 | that: | |
c906108c | 4087 | |
c5aa993b | 4088 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4089 | |
c5aa993b | 4090 | if we understand why we stopped, the result is not null. |
c906108c | 4091 | |
c5aa993b JM |
4092 | Each element of the chain refers to a particular breakpoint or |
4093 | watchpoint at which we have stopped. (We may have stopped for | |
4094 | several reasons concurrently.) | |
c906108c | 4095 | |
c5aa993b JM |
4096 | Each element of the chain has valid next, breakpoint_at, |
4097 | commands, FIXME??? fields. */ | |
c906108c SS |
4098 | |
4099 | bpstat | |
6c95b8df PA |
4100 | bpstat_stop_status (struct address_space *aspace, |
4101 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4102 | { |
0d381245 | 4103 | struct breakpoint *b = NULL; |
afe38095 | 4104 | struct bp_location *bl; |
20874c92 | 4105 | struct bp_location *loc; |
5760d0ab JK |
4106 | /* First item of allocated bpstat's. */ |
4107 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4108 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4109 | bpstat bs; |
20874c92 | 4110 | int ix; |
429374b8 | 4111 | int need_remove_insert; |
f431efe5 | 4112 | int removed_any; |
c906108c | 4113 | |
f431efe5 PA |
4114 | /* First, build the bpstat chain with locations that explain a |
4115 | target stop, while being careful to not set the target running, | |
4116 | as that may invalidate locations (in particular watchpoint | |
4117 | locations are recreated). Resuming will happen here with | |
4118 | breakpoint conditions or watchpoint expressions that include | |
4119 | inferior function calls. */ | |
c5aa993b | 4120 | |
429374b8 JK |
4121 | ALL_BREAKPOINTS (b) |
4122 | { | |
4123 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4124 | continue; | |
a5606eee | 4125 | |
429374b8 JK |
4126 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4127 | { | |
4a64f543 MS |
4128 | /* For hardware watchpoints, we look only at the first |
4129 | location. The watchpoint_check function will work on the | |
4130 | entire expression, not the individual locations. For | |
4131 | read watchpoints, the watchpoints_triggered function has | |
4132 | checked all locations already. */ | |
429374b8 JK |
4133 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4134 | break; | |
18a18393 | 4135 | |
429374b8 JK |
4136 | if (bl->shlib_disabled) |
4137 | continue; | |
c5aa993b | 4138 | |
429374b8 JK |
4139 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4140 | continue; | |
c5aa993b | 4141 | |
4a64f543 MS |
4142 | /* Come here if it's a watchpoint, or if the break address |
4143 | matches. */ | |
c5aa993b | 4144 | |
4a64f543 MS |
4145 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4146 | explain stop. */ | |
c5aa993b | 4147 | |
f431efe5 PA |
4148 | /* Assume we stop. Should we find a watchpoint that is not |
4149 | actually triggered, or if the condition of the breakpoint | |
4150 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4151 | bs->stop = 1; |
4152 | bs->print = 1; | |
d983da9c | 4153 | |
f431efe5 PA |
4154 | /* If this is a scope breakpoint, mark the associated |
4155 | watchpoint as triggered so that we will handle the | |
4156 | out-of-scope event. We'll get to the watchpoint next | |
4157 | iteration. */ | |
d0fb5eae | 4158 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4159 | { |
4160 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4161 | ||
4162 | w->watchpoint_triggered = watch_triggered_yes; | |
4163 | } | |
f431efe5 PA |
4164 | } |
4165 | } | |
4166 | ||
4167 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4168 | { | |
f1310107 | 4169 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4170 | { |
5760d0ab | 4171 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4172 | /* For hits of moribund locations, we should just proceed. */ |
4173 | bs->stop = 0; | |
4174 | bs->print = 0; | |
4175 | bs->print_it = print_it_noop; | |
4176 | } | |
4177 | } | |
4178 | ||
f431efe5 PA |
4179 | /* Now go through the locations that caused the target to stop, and |
4180 | check whether we're interested in reporting this stop to higher | |
4181 | layers, or whether we should resume the target transparently. */ | |
4182 | ||
4183 | removed_any = 0; | |
4184 | ||
5760d0ab | 4185 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4186 | { |
4187 | if (!bs->stop) | |
4188 | continue; | |
4189 | ||
f431efe5 | 4190 | b = bs->breakpoint_at; |
348d480f PA |
4191 | b->ops->check_status (bs); |
4192 | if (bs->stop) | |
28010a5d | 4193 | { |
348d480f | 4194 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4195 | |
429374b8 JK |
4196 | if (bs->stop) |
4197 | { | |
4198 | ++(b->hit_count); | |
8d3788bd | 4199 | observer_notify_breakpoint_modified (b); |
c906108c | 4200 | |
4a64f543 | 4201 | /* We will stop here. */ |
429374b8 JK |
4202 | if (b->disposition == disp_disable) |
4203 | { | |
4204 | if (b->enable_state != bp_permanent) | |
4205 | b->enable_state = bp_disabled; | |
f431efe5 | 4206 | removed_any = 1; |
429374b8 JK |
4207 | } |
4208 | if (b->silent) | |
4209 | bs->print = 0; | |
4210 | bs->commands = b->commands; | |
9add0f1b | 4211 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
4212 | if (command_line_is_silent (bs->commands |
4213 | ? bs->commands->commands : NULL)) | |
4214 | bs->print = 0; | |
429374b8 JK |
4215 | } |
4216 | ||
e5dd4106 | 4217 | /* Print nothing for this entry if we don't stop or don't print. */ |
429374b8 JK |
4218 | if (bs->stop == 0 || bs->print == 0) |
4219 | bs->print_it = print_it_noop; | |
348d480f | 4220 | } |
429374b8 | 4221 | } |
876fa593 | 4222 | |
d983da9c DJ |
4223 | /* If we aren't stopping, the value of some hardware watchpoint may |
4224 | not have changed, but the intermediate memory locations we are | |
4225 | watching may have. Don't bother if we're stopping; this will get | |
4226 | done later. */ | |
d832cb68 | 4227 | need_remove_insert = 0; |
5760d0ab JK |
4228 | if (! bpstat_causes_stop (bs_head)) |
4229 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4230 | if (!bs->stop |
f431efe5 PA |
4231 | && bs->breakpoint_at |
4232 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4233 | { |
3a5c3e22 PA |
4234 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
4235 | ||
4236 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 4237 | need_remove_insert = 1; |
d983da9c DJ |
4238 | } |
4239 | ||
d832cb68 | 4240 | if (need_remove_insert) |
2d134ed3 | 4241 | update_global_location_list (1); |
f431efe5 PA |
4242 | else if (removed_any) |
4243 | update_global_location_list (0); | |
d832cb68 | 4244 | |
5760d0ab | 4245 | return bs_head; |
c906108c | 4246 | } |
628fe4e4 JK |
4247 | |
4248 | static void | |
4249 | handle_jit_event (void) | |
4250 | { | |
4251 | struct frame_info *frame; | |
4252 | struct gdbarch *gdbarch; | |
4253 | ||
4254 | /* Switch terminal for any messages produced by | |
4255 | breakpoint_re_set. */ | |
4256 | target_terminal_ours_for_output (); | |
4257 | ||
4258 | frame = get_current_frame (); | |
4259 | gdbarch = get_frame_arch (frame); | |
4260 | ||
4261 | jit_event_handler (gdbarch); | |
4262 | ||
4263 | target_terminal_inferior (); | |
4264 | } | |
4265 | ||
4266 | /* Prepare WHAT final decision for infrun. */ | |
4267 | ||
4268 | /* Decide what infrun needs to do with this bpstat. */ | |
4269 | ||
c906108c | 4270 | struct bpstat_what |
0e30163f | 4271 | bpstat_what (bpstat bs_head) |
c906108c | 4272 | { |
c906108c | 4273 | struct bpstat_what retval; |
628fe4e4 JK |
4274 | /* We need to defer calling `solib_add', as adding new symbols |
4275 | resets breakpoints, which in turn deletes breakpoint locations, | |
4276 | and hence may clear unprocessed entries in the BS chain. */ | |
4277 | int shlib_event = 0; | |
4278 | int jit_event = 0; | |
0e30163f | 4279 | bpstat bs; |
c906108c | 4280 | |
628fe4e4 | 4281 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4282 | retval.call_dummy = STOP_NONE; |
186c406b | 4283 | retval.is_longjmp = 0; |
628fe4e4 | 4284 | |
0e30163f | 4285 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4286 | { |
628fe4e4 JK |
4287 | /* Extract this BS's action. After processing each BS, we check |
4288 | if its action overrides all we've seem so far. */ | |
4289 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4290 | enum bptype bptype; | |
4291 | ||
c906108c | 4292 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4293 | { |
4294 | /* I suspect this can happen if it was a momentary | |
4295 | breakpoint which has since been deleted. */ | |
4296 | bptype = bp_none; | |
4297 | } | |
20874c92 | 4298 | else |
f431efe5 | 4299 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4300 | |
4301 | switch (bptype) | |
c906108c SS |
4302 | { |
4303 | case bp_none: | |
628fe4e4 | 4304 | break; |
c906108c SS |
4305 | case bp_breakpoint: |
4306 | case bp_hardware_breakpoint: | |
4307 | case bp_until: | |
4308 | case bp_finish: | |
4309 | if (bs->stop) | |
4310 | { | |
4311 | if (bs->print) | |
628fe4e4 | 4312 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4313 | else |
628fe4e4 | 4314 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4315 | } |
4316 | else | |
628fe4e4 | 4317 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4318 | break; |
4319 | case bp_watchpoint: | |
4320 | case bp_hardware_watchpoint: | |
4321 | case bp_read_watchpoint: | |
4322 | case bp_access_watchpoint: | |
4323 | if (bs->stop) | |
4324 | { | |
4325 | if (bs->print) | |
628fe4e4 | 4326 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4327 | else |
628fe4e4 | 4328 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4329 | } |
4330 | else | |
628fe4e4 JK |
4331 | { |
4332 | /* There was a watchpoint, but we're not stopping. | |
4333 | This requires no further action. */ | |
4334 | } | |
c906108c SS |
4335 | break; |
4336 | case bp_longjmp: | |
186c406b | 4337 | case bp_exception: |
628fe4e4 | 4338 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4339 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4340 | break; |
4341 | case bp_longjmp_resume: | |
186c406b | 4342 | case bp_exception_resume: |
628fe4e4 | 4343 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4344 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4345 | break; |
4346 | case bp_step_resume: | |
4347 | if (bs->stop) | |
628fe4e4 JK |
4348 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4349 | else | |
c906108c | 4350 | { |
628fe4e4 JK |
4351 | /* It is for the wrong frame. */ |
4352 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4353 | } |
c906108c | 4354 | break; |
2c03e5be PA |
4355 | case bp_hp_step_resume: |
4356 | if (bs->stop) | |
4357 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
4358 | else | |
4359 | { | |
4360 | /* It is for the wrong frame. */ | |
4361 | this_action = BPSTAT_WHAT_SINGLE; | |
4362 | } | |
4363 | break; | |
c906108c | 4364 | case bp_watchpoint_scope: |
c4093a6a | 4365 | case bp_thread_event: |
1900040c | 4366 | case bp_overlay_event: |
0fd8e87f | 4367 | case bp_longjmp_master: |
aa7d318d | 4368 | case bp_std_terminate_master: |
186c406b | 4369 | case bp_exception_master: |
628fe4e4 | 4370 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4371 | break; |
ce78b96d | 4372 | case bp_catchpoint: |
c5aa993b JM |
4373 | if (bs->stop) |
4374 | { | |
4375 | if (bs->print) | |
628fe4e4 | 4376 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4377 | else |
628fe4e4 | 4378 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4379 | } |
4380 | else | |
628fe4e4 JK |
4381 | { |
4382 | /* There was a catchpoint, but we're not stopping. | |
4383 | This requires no further action. */ | |
4384 | } | |
4385 | break; | |
4386 | case bp_shlib_event: | |
4387 | shlib_event = 1; | |
4388 | ||
4389 | /* If requested, stop when the dynamic linker notifies GDB | |
4390 | of events. This allows the user to get control and place | |
4391 | breakpoints in initializer routines for dynamically | |
4392 | loaded objects (among other things). */ | |
4393 | if (stop_on_solib_events) | |
4394 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4395 | else | |
4396 | this_action = BPSTAT_WHAT_SINGLE; | |
4397 | break; | |
4398 | case bp_jit_event: | |
4399 | jit_event = 1; | |
4400 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4401 | break; |
c906108c | 4402 | case bp_call_dummy: |
53a5351d JM |
4403 | /* Make sure the action is stop (silent or noisy), |
4404 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4405 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4406 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4407 | break; |
4408 | case bp_std_terminate: | |
4409 | /* Make sure the action is stop (silent or noisy), | |
4410 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4411 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4412 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4413 | break; |
1042e4c0 | 4414 | case bp_tracepoint: |
7a697b8d | 4415 | case bp_fast_tracepoint: |
0fb4aa4b | 4416 | case bp_static_tracepoint: |
1042e4c0 SS |
4417 | /* Tracepoint hits should not be reported back to GDB, and |
4418 | if one got through somehow, it should have been filtered | |
4419 | out already. */ | |
4420 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4421 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4422 | break; |
4423 | case bp_gnu_ifunc_resolver: | |
4424 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4425 | this_action = BPSTAT_WHAT_SINGLE; | |
4426 | break; | |
4427 | case bp_gnu_ifunc_resolver_return: | |
4428 | /* The breakpoint will be removed, execution will restart from the | |
4429 | PC of the former breakpoint. */ | |
4430 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4431 | break; | |
628fe4e4 JK |
4432 | default: |
4433 | internal_error (__FILE__, __LINE__, | |
4434 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4435 | } |
628fe4e4 JK |
4436 | |
4437 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4438 | } |
628fe4e4 | 4439 | |
0e30163f JK |
4440 | /* These operations may affect the bs->breakpoint_at state so they are |
4441 | delayed after MAIN_ACTION is decided above. */ | |
4442 | ||
628fe4e4 JK |
4443 | if (shlib_event) |
4444 | { | |
4445 | if (debug_infrun) | |
4446 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4447 | ||
4448 | /* Check for any newly added shared libraries if we're supposed | |
4449 | to be adding them automatically. */ | |
4450 | ||
4451 | /* Switch terminal for any messages produced by | |
4452 | breakpoint_re_set. */ | |
4453 | target_terminal_ours_for_output (); | |
4454 | ||
4455 | #ifdef SOLIB_ADD | |
4456 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4457 | #else | |
4458 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4459 | #endif | |
4460 | ||
4461 | target_terminal_inferior (); | |
4462 | } | |
4463 | ||
4464 | if (jit_event) | |
4465 | { | |
4466 | if (debug_infrun) | |
4467 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4468 | ||
4469 | handle_jit_event (); | |
4470 | } | |
4471 | ||
0e30163f JK |
4472 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4473 | { | |
4474 | struct breakpoint *b = bs->breakpoint_at; | |
4475 | ||
4476 | if (b == NULL) | |
4477 | continue; | |
4478 | switch (b->type) | |
4479 | { | |
4480 | case bp_gnu_ifunc_resolver: | |
4481 | gnu_ifunc_resolver_stop (b); | |
4482 | break; | |
4483 | case bp_gnu_ifunc_resolver_return: | |
4484 | gnu_ifunc_resolver_return_stop (b); | |
4485 | break; | |
4486 | } | |
4487 | } | |
4488 | ||
c906108c SS |
4489 | return retval; |
4490 | } | |
4491 | ||
4492 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4493 | without hardware support). This isn't related to a specific bpstat, | |
4494 | just to things like whether watchpoints are set. */ | |
4495 | ||
c5aa993b | 4496 | int |
fba45db2 | 4497 | bpstat_should_step (void) |
c906108c SS |
4498 | { |
4499 | struct breakpoint *b; | |
cc59ec59 | 4500 | |
c906108c | 4501 | ALL_BREAKPOINTS (b) |
717a8278 | 4502 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4503 | return 1; |
c906108c SS |
4504 | return 0; |
4505 | } | |
4506 | ||
67822962 PA |
4507 | int |
4508 | bpstat_causes_stop (bpstat bs) | |
4509 | { | |
4510 | for (; bs != NULL; bs = bs->next) | |
4511 | if (bs->stop) | |
4512 | return 1; | |
4513 | ||
4514 | return 0; | |
4515 | } | |
4516 | ||
c906108c | 4517 | \f |
c5aa993b | 4518 | |
170b53b2 UW |
4519 | /* Compute a string of spaces suitable to indent the next line |
4520 | so it starts at the position corresponding to the table column | |
4521 | named COL_NAME in the currently active table of UIOUT. */ | |
4522 | ||
4523 | static char * | |
4524 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4525 | { | |
4526 | static char wrap_indent[80]; | |
4527 | int i, total_width, width, align; | |
4528 | char *text; | |
4529 | ||
4530 | total_width = 0; | |
4531 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4532 | { | |
4533 | if (strcmp (text, col_name) == 0) | |
4534 | { | |
4535 | gdb_assert (total_width < sizeof wrap_indent); | |
4536 | memset (wrap_indent, ' ', total_width); | |
4537 | wrap_indent[total_width] = 0; | |
4538 | ||
4539 | return wrap_indent; | |
4540 | } | |
4541 | ||
4542 | total_width += width + 1; | |
4543 | } | |
4544 | ||
4545 | return NULL; | |
4546 | } | |
4547 | ||
859825b8 JK |
4548 | /* Print the LOC location out of the list of B->LOC locations. */ |
4549 | ||
170b53b2 UW |
4550 | static void |
4551 | print_breakpoint_location (struct breakpoint *b, | |
4552 | struct bp_location *loc) | |
0d381245 | 4553 | { |
79a45e25 | 4554 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
4555 | struct cleanup *old_chain = save_current_program_space (); |
4556 | ||
859825b8 JK |
4557 | if (loc != NULL && loc->shlib_disabled) |
4558 | loc = NULL; | |
4559 | ||
6c95b8df PA |
4560 | if (loc != NULL) |
4561 | set_current_program_space (loc->pspace); | |
4562 | ||
56435ebe TT |
4563 | if (b->display_canonical) |
4564 | ui_out_field_string (uiout, "what", b->addr_string); | |
4565 | else if (b->source_file && loc) | |
0d381245 VP |
4566 | { |
4567 | struct symbol *sym | |
4568 | = find_pc_sect_function (loc->address, loc->section); | |
4569 | if (sym) | |
4570 | { | |
4571 | ui_out_text (uiout, "in "); | |
4572 | ui_out_field_string (uiout, "func", | |
4573 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4574 | ui_out_text (uiout, " "); |
4575 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4576 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4577 | } |
4578 | ui_out_field_string (uiout, "file", b->source_file); | |
4579 | ui_out_text (uiout, ":"); | |
4580 | ||
4581 | if (ui_out_is_mi_like_p (uiout)) | |
4582 | { | |
4583 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4584 | char *fullname = symtab_to_fullname (sal.symtab); | |
4585 | ||
4586 | if (fullname) | |
4587 | ui_out_field_string (uiout, "fullname", fullname); | |
4588 | } | |
4589 | ||
4590 | ui_out_field_int (uiout, "line", b->line_number); | |
4591 | } | |
859825b8 | 4592 | else if (loc) |
0d381245 | 4593 | { |
170b53b2 UW |
4594 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4595 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4596 | ||
22e722e1 DJ |
4597 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4598 | demangle, ""); | |
0d381245 | 4599 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4600 | |
4601 | do_cleanups (stb_chain); | |
0d381245 | 4602 | } |
859825b8 JK |
4603 | else |
4604 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4605 | |
4606 | do_cleanups (old_chain); | |
0d381245 VP |
4607 | } |
4608 | ||
269b11a2 PA |
4609 | static const char * |
4610 | bptype_string (enum bptype type) | |
c906108c | 4611 | { |
c4093a6a JM |
4612 | struct ep_type_description |
4613 | { | |
4614 | enum bptype type; | |
4615 | char *description; | |
4616 | }; | |
4617 | static struct ep_type_description bptypes[] = | |
c906108c | 4618 | { |
c5aa993b JM |
4619 | {bp_none, "?deleted?"}, |
4620 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4621 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4622 | {bp_until, "until"}, |
4623 | {bp_finish, "finish"}, | |
4624 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4625 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4626 | {bp_read_watchpoint, "read watchpoint"}, |
4627 | {bp_access_watchpoint, "acc watchpoint"}, | |
4628 | {bp_longjmp, "longjmp"}, | |
4629 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4630 | {bp_exception, "exception"}, |
4631 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4632 | {bp_step_resume, "step resume"}, |
2c03e5be | 4633 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
4634 | {bp_watchpoint_scope, "watchpoint scope"}, |
4635 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4636 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4637 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4638 | {bp_thread_event, "thread events"}, |
1900040c | 4639 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4640 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4641 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4642 | {bp_exception_master, "exception master"}, |
ce78b96d | 4643 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4644 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4645 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4646 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4647 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4648 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4649 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4650 | }; |
269b11a2 PA |
4651 | |
4652 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4653 | || ((int) type != bptypes[(int) type].type)) | |
4654 | internal_error (__FILE__, __LINE__, | |
4655 | _("bptypes table does not describe type #%d."), | |
4656 | (int) type); | |
4657 | ||
4658 | return bptypes[(int) type].description; | |
4659 | } | |
4660 | ||
4661 | /* Print B to gdb_stdout. */ | |
4662 | ||
4663 | static void | |
4664 | print_one_breakpoint_location (struct breakpoint *b, | |
4665 | struct bp_location *loc, | |
4666 | int loc_number, | |
4667 | struct bp_location **last_loc, | |
269b11a2 PA |
4668 | int allflag) |
4669 | { | |
4670 | struct command_line *l; | |
c2c6d25f | 4671 | static char bpenables[] = "nynny"; |
c906108c | 4672 | |
79a45e25 | 4673 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
4674 | int header_of_multiple = 0; |
4675 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4676 | struct value_print_options opts; |
4677 | ||
4678 | get_user_print_options (&opts); | |
0d381245 VP |
4679 | |
4680 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4681 | /* See comment in print_one_breakpoint concerning treatment of |
4682 | breakpoints with single disabled location. */ | |
0d381245 VP |
4683 | if (loc == NULL |
4684 | && (b->loc != NULL | |
4685 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4686 | header_of_multiple = 1; | |
4687 | if (loc == NULL) | |
4688 | loc = b->loc; | |
4689 | ||
c4093a6a JM |
4690 | annotate_record (); |
4691 | ||
4692 | /* 1 */ | |
4693 | annotate_field (0); | |
0d381245 VP |
4694 | if (part_of_multiple) |
4695 | { | |
4696 | char *formatted; | |
0c6773c1 | 4697 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4698 | ui_out_field_string (uiout, "number", formatted); |
4699 | xfree (formatted); | |
4700 | } | |
4701 | else | |
4702 | { | |
4703 | ui_out_field_int (uiout, "number", b->number); | |
4704 | } | |
c4093a6a JM |
4705 | |
4706 | /* 2 */ | |
4707 | annotate_field (1); | |
0d381245 VP |
4708 | if (part_of_multiple) |
4709 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4710 | else |
4711 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4712 | |
4713 | /* 3 */ | |
4714 | annotate_field (2); | |
0d381245 VP |
4715 | if (part_of_multiple) |
4716 | ui_out_field_skip (uiout, "disp"); | |
4717 | else | |
2cec12e5 | 4718 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4719 | |
c4093a6a JM |
4720 | |
4721 | /* 4 */ | |
4722 | annotate_field (3); | |
0d381245 | 4723 | if (part_of_multiple) |
54e52265 | 4724 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4725 | else |
4a64f543 MS |
4726 | ui_out_field_fmt (uiout, "enabled", "%c", |
4727 | bpenables[(int) b->enable_state]); | |
54e52265 | 4728 | ui_out_spaces (uiout, 2); |
0d381245 | 4729 | |
c4093a6a JM |
4730 | |
4731 | /* 5 and 6 */ | |
3086aeae | 4732 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4733 | { |
4a64f543 MS |
4734 | /* Although the print_one can possibly print all locations, |
4735 | calling it here is not likely to get any nice result. So, | |
4736 | make sure there's just one location. */ | |
0d381245 | 4737 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4738 | b->ops->print_one (b, last_loc); |
0d381245 | 4739 | } |
3086aeae DJ |
4740 | else |
4741 | switch (b->type) | |
4742 | { | |
4743 | case bp_none: | |
4744 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4745 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4746 | break; |
c906108c | 4747 | |
3086aeae DJ |
4748 | case bp_watchpoint: |
4749 | case bp_hardware_watchpoint: | |
4750 | case bp_read_watchpoint: | |
4751 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4752 | { |
4753 | struct watchpoint *w = (struct watchpoint *) b; | |
4754 | ||
4755 | /* Field 4, the address, is omitted (which makes the columns | |
4756 | not line up too nicely with the headers, but the effect | |
4757 | is relatively readable). */ | |
4758 | if (opts.addressprint) | |
4759 | ui_out_field_skip (uiout, "addr"); | |
4760 | annotate_field (5); | |
4761 | ui_out_field_string (uiout, "what", w->exp_string); | |
4762 | } | |
3086aeae DJ |
4763 | break; |
4764 | ||
3086aeae DJ |
4765 | case bp_breakpoint: |
4766 | case bp_hardware_breakpoint: | |
4767 | case bp_until: | |
4768 | case bp_finish: | |
4769 | case bp_longjmp: | |
4770 | case bp_longjmp_resume: | |
186c406b TT |
4771 | case bp_exception: |
4772 | case bp_exception_resume: | |
3086aeae | 4773 | case bp_step_resume: |
2c03e5be | 4774 | case bp_hp_step_resume: |
3086aeae DJ |
4775 | case bp_watchpoint_scope: |
4776 | case bp_call_dummy: | |
aa7d318d | 4777 | case bp_std_terminate: |
3086aeae DJ |
4778 | case bp_shlib_event: |
4779 | case bp_thread_event: | |
4780 | case bp_overlay_event: | |
0fd8e87f | 4781 | case bp_longjmp_master: |
aa7d318d | 4782 | case bp_std_terminate_master: |
186c406b | 4783 | case bp_exception_master: |
1042e4c0 | 4784 | case bp_tracepoint: |
7a697b8d | 4785 | case bp_fast_tracepoint: |
0fb4aa4b | 4786 | case bp_static_tracepoint: |
4efc6507 | 4787 | case bp_jit_event: |
0e30163f JK |
4788 | case bp_gnu_ifunc_resolver: |
4789 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4790 | if (opts.addressprint) |
3086aeae DJ |
4791 | { |
4792 | annotate_field (4); | |
54e52265 | 4793 | if (header_of_multiple) |
0d381245 | 4794 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4795 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4796 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4797 | else |
5af949e3 UW |
4798 | ui_out_field_core_addr (uiout, "addr", |
4799 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4800 | } |
4801 | annotate_field (5); | |
0d381245 | 4802 | if (!header_of_multiple) |
170b53b2 | 4803 | print_breakpoint_location (b, loc); |
0d381245 | 4804 | if (b->loc) |
a6d9a66e | 4805 | *last_loc = b->loc; |
3086aeae DJ |
4806 | break; |
4807 | } | |
c906108c | 4808 | |
6c95b8df PA |
4809 | |
4810 | /* For backward compatibility, don't display inferiors unless there | |
4811 | are several. */ | |
4812 | if (loc != NULL | |
4813 | && !header_of_multiple | |
4814 | && (allflag | |
4815 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4816 | && (number_of_program_spaces () > 1 | |
4817 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4818 | /* LOC is for existing B, it cannot be in |
4819 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4820 | && loc->owner->type != bp_catchpoint))) |
4821 | { | |
4822 | struct inferior *inf; | |
4823 | int first = 1; | |
4824 | ||
4825 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4826 | { | |
4827 | if (inf->pspace == loc->pspace) | |
4828 | { | |
4829 | if (first) | |
4830 | { | |
4831 | first = 0; | |
4832 | ui_out_text (uiout, " inf "); | |
4833 | } | |
4834 | else | |
4835 | ui_out_text (uiout, ", "); | |
4836 | ui_out_text (uiout, plongest (inf->num)); | |
4837 | } | |
4838 | } | |
4839 | } | |
4840 | ||
4a306c9a | 4841 | if (!part_of_multiple) |
c4093a6a | 4842 | { |
4a306c9a JB |
4843 | if (b->thread != -1) |
4844 | { | |
4845 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4846 | "stop only in" line a little further down. */ |
4a306c9a JB |
4847 | ui_out_text (uiout, " thread "); |
4848 | ui_out_field_int (uiout, "thread", b->thread); | |
4849 | } | |
4850 | else if (b->task != 0) | |
4851 | { | |
4852 | ui_out_text (uiout, " task "); | |
4853 | ui_out_field_int (uiout, "task", b->task); | |
4854 | } | |
c4093a6a | 4855 | } |
f1310107 | 4856 | |
8b93c638 | 4857 | ui_out_text (uiout, "\n"); |
f1310107 | 4858 | |
348d480f | 4859 | if (!part_of_multiple) |
f1310107 TJB |
4860 | b->ops->print_one_detail (b, uiout); |
4861 | ||
0d381245 | 4862 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4863 | { |
4864 | annotate_field (6); | |
8b93c638 | 4865 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 4866 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 4867 | the frame ID. */ |
5af949e3 UW |
4868 | ui_out_field_core_addr (uiout, "frame", |
4869 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4870 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4871 | } |
4872 | ||
28010a5d | 4873 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
4874 | { |
4875 | annotate_field (7); | |
d77f58be | 4876 | if (is_tracepoint (b)) |
1042e4c0 SS |
4877 | ui_out_text (uiout, "\ttrace only if "); |
4878 | else | |
4879 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4880 | ui_out_field_string (uiout, "cond", b->cond_string); |
4881 | ui_out_text (uiout, "\n"); | |
4882 | } | |
4883 | ||
0d381245 | 4884 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4885 | { |
4a64f543 | 4886 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4887 | ui_out_text (uiout, "\tstop only in thread "); |
4888 | ui_out_field_int (uiout, "thread", b->thread); | |
4889 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4890 | } |
4891 | ||
63c715c6 | 4892 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4893 | { |
4a64f543 | 4894 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4895 | if (ep_is_catchpoint (b)) |
4896 | ui_out_text (uiout, "\tcatchpoint"); | |
f196051f SS |
4897 | else if (is_tracepoint (b)) |
4898 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
4899 | else |
4900 | ui_out_text (uiout, "\tbreakpoint"); | |
4901 | ui_out_text (uiout, " already hit "); | |
4902 | ui_out_field_int (uiout, "times", b->hit_count); | |
4903 | if (b->hit_count == 1) | |
4904 | ui_out_text (uiout, " time\n"); | |
4905 | else | |
4906 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4907 | } |
4908 | ||
4a64f543 MS |
4909 | /* Output the count also if it is zero, but only if this is mi. |
4910 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4911 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4912 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4913 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4914 | |
0d381245 | 4915 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4916 | { |
4917 | annotate_field (8); | |
8b93c638 JM |
4918 | ui_out_text (uiout, "\tignore next "); |
4919 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4920 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4921 | } |
059fb39f | 4922 | |
f196051f SS |
4923 | if (!part_of_multiple && is_tracepoint (b)) |
4924 | { | |
4925 | struct tracepoint *tp = (struct tracepoint *) b; | |
4926 | ||
4927 | if (tp->traceframe_usage) | |
4928 | { | |
4929 | ui_out_text (uiout, "\ttrace buffer usage "); | |
4930 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
4931 | ui_out_text (uiout, " bytes\n"); | |
4932 | } | |
4933 | } | |
4934 | ||
9add0f1b | 4935 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4936 | if (!part_of_multiple && l) |
c4093a6a | 4937 | { |
3b31d625 EZ |
4938 | struct cleanup *script_chain; |
4939 | ||
c4093a6a | 4940 | annotate_field (9); |
3b31d625 | 4941 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4942 | print_command_lines (uiout, l, 4); |
3b31d625 | 4943 | do_cleanups (script_chain); |
c4093a6a | 4944 | } |
d24317b4 | 4945 | |
d9b3f62e | 4946 | if (is_tracepoint (b)) |
1042e4c0 | 4947 | { |
d9b3f62e PA |
4948 | struct tracepoint *t = (struct tracepoint *) b; |
4949 | ||
4950 | if (!part_of_multiple && t->pass_count) | |
4951 | { | |
4952 | annotate_field (10); | |
4953 | ui_out_text (uiout, "\tpass count "); | |
4954 | ui_out_field_int (uiout, "pass", t->pass_count); | |
4955 | ui_out_text (uiout, " \n"); | |
4956 | } | |
1042e4c0 SS |
4957 | } |
4958 | ||
d24317b4 VP |
4959 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4960 | { | |
3a5c3e22 PA |
4961 | if (is_watchpoint (b)) |
4962 | { | |
4963 | struct watchpoint *w = (struct watchpoint *) b; | |
4964 | ||
4965 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
4966 | } | |
4967 | else if (b->addr_string) | |
d24317b4 | 4968 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 4969 | } |
c4093a6a | 4970 | } |
c5aa993b | 4971 | |
0d381245 VP |
4972 | static void |
4973 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 4974 | struct bp_location **last_loc, |
6c95b8df | 4975 | int allflag) |
0d381245 | 4976 | { |
8d3788bd | 4977 | struct cleanup *bkpt_chain; |
79a45e25 | 4978 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
4979 | |
4980 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
4981 | ||
12c5a436 | 4982 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 4983 | do_cleanups (bkpt_chain); |
0d381245 VP |
4984 | |
4985 | /* If this breakpoint has custom print function, | |
4986 | it's already printed. Otherwise, print individual | |
4987 | locations, if any. */ | |
4988 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4989 | { | |
4a64f543 MS |
4990 | /* If breakpoint has a single location that is disabled, we |
4991 | print it as if it had several locations, since otherwise it's | |
4992 | hard to represent "breakpoint enabled, location disabled" | |
4993 | situation. | |
4994 | ||
4995 | Note that while hardware watchpoints have several locations | |
a3be7890 | 4996 | internally, that's not a property exposed to user. */ |
0d381245 | 4997 | if (b->loc |
a5606eee | 4998 | && !is_hardware_watchpoint (b) |
8d3788bd | 4999 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5000 | { |
5001 | struct bp_location *loc; | |
5002 | int n = 1; | |
8d3788bd | 5003 | |
0d381245 | 5004 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5005 | { |
5006 | struct cleanup *inner2 = | |
5007 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5008 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5009 | do_cleanups (inner2); | |
5010 | } | |
0d381245 VP |
5011 | } |
5012 | } | |
5013 | } | |
5014 | ||
a6d9a66e UW |
5015 | static int |
5016 | breakpoint_address_bits (struct breakpoint *b) | |
5017 | { | |
5018 | int print_address_bits = 0; | |
5019 | struct bp_location *loc; | |
5020 | ||
5021 | for (loc = b->loc; loc; loc = loc->next) | |
5022 | { | |
c7437ca6 PA |
5023 | int addr_bit; |
5024 | ||
5025 | /* Software watchpoints that aren't watching memory don't have | |
5026 | an address to print. */ | |
5027 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5028 | continue; | |
5029 | ||
5030 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5031 | if (addr_bit > print_address_bits) |
5032 | print_address_bits = addr_bit; | |
5033 | } | |
5034 | ||
5035 | return print_address_bits; | |
5036 | } | |
0d381245 | 5037 | |
c4093a6a JM |
5038 | struct captured_breakpoint_query_args |
5039 | { | |
5040 | int bnum; | |
5041 | }; | |
c5aa993b | 5042 | |
c4093a6a | 5043 | static int |
2b65245e | 5044 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5045 | { |
5046 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5047 | struct breakpoint *b; |
a6d9a66e | 5048 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5049 | |
c4093a6a JM |
5050 | ALL_BREAKPOINTS (b) |
5051 | { | |
5052 | if (args->bnum == b->number) | |
c5aa993b | 5053 | { |
12c5a436 | 5054 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5055 | return GDB_RC_OK; |
c5aa993b | 5056 | } |
c4093a6a JM |
5057 | } |
5058 | return GDB_RC_NONE; | |
5059 | } | |
c5aa993b | 5060 | |
c4093a6a | 5061 | enum gdb_rc |
4a64f543 MS |
5062 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5063 | char **error_message) | |
c4093a6a JM |
5064 | { |
5065 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5066 | |
c4093a6a JM |
5067 | args.bnum = bnum; |
5068 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5069 | an error. */ |
b0b13bb4 DJ |
5070 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5071 | error_message, RETURN_MASK_ALL) < 0) | |
5072 | return GDB_RC_FAIL; | |
5073 | else | |
5074 | return GDB_RC_OK; | |
c4093a6a | 5075 | } |
c5aa993b | 5076 | |
09d682a4 TT |
5077 | /* Return true if this breakpoint was set by the user, false if it is |
5078 | internal or momentary. */ | |
5079 | ||
5080 | int | |
5081 | user_breakpoint_p (struct breakpoint *b) | |
5082 | { | |
46c6471b | 5083 | return b->number > 0; |
09d682a4 TT |
5084 | } |
5085 | ||
7f3b0473 | 5086 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5087 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5088 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5089 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5090 | ones for which it returns non-zero. Return the total number of | |
5091 | breakpoints listed. */ | |
c906108c | 5092 | |
d77f58be | 5093 | static int |
e5a67952 | 5094 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5095 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5096 | { |
52f0bd74 | 5097 | struct breakpoint *b; |
a6d9a66e | 5098 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5099 | int nr_printable_breakpoints; |
3b31d625 | 5100 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5101 | struct value_print_options opts; |
a6d9a66e | 5102 | int print_address_bits = 0; |
269b11a2 | 5103 | int print_type_col_width = 14; |
79a45e25 | 5104 | struct ui_out *uiout = current_uiout; |
269b11a2 | 5105 | |
79a45b7d TT |
5106 | get_user_print_options (&opts); |
5107 | ||
4a64f543 MS |
5108 | /* Compute the number of rows in the table, as well as the size |
5109 | required for address fields. */ | |
7f3b0473 AC |
5110 | nr_printable_breakpoints = 0; |
5111 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5112 | { |
5113 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5114 | if (filter && !filter (b)) | |
5115 | continue; | |
5116 | ||
5117 | /* If we have an "args" string, it is a list of breakpoints to | |
5118 | accept. Skip the others. */ | |
5119 | if (args != NULL && *args != '\0') | |
5120 | { | |
5121 | if (allflag && parse_and_eval_long (args) != b->number) | |
5122 | continue; | |
5123 | if (!allflag && !number_is_in_list (args, b->number)) | |
5124 | continue; | |
5125 | } | |
269b11a2 | 5126 | |
e5a67952 MS |
5127 | if (allflag || user_breakpoint_p (b)) |
5128 | { | |
5129 | int addr_bit, type_len; | |
a6d9a66e | 5130 | |
e5a67952 MS |
5131 | addr_bit = breakpoint_address_bits (b); |
5132 | if (addr_bit > print_address_bits) | |
5133 | print_address_bits = addr_bit; | |
269b11a2 | 5134 | |
e5a67952 MS |
5135 | type_len = strlen (bptype_string (b->type)); |
5136 | if (type_len > print_type_col_width) | |
5137 | print_type_col_width = type_len; | |
5138 | ||
5139 | nr_printable_breakpoints++; | |
5140 | } | |
5141 | } | |
7f3b0473 | 5142 | |
79a45b7d | 5143 | if (opts.addressprint) |
3b31d625 | 5144 | bkpttbl_chain |
3e43a32a MS |
5145 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5146 | nr_printable_breakpoints, | |
3b31d625 | 5147 | "BreakpointTable"); |
8b93c638 | 5148 | else |
3b31d625 | 5149 | bkpttbl_chain |
3e43a32a MS |
5150 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5151 | nr_printable_breakpoints, | |
3b31d625 | 5152 | "BreakpointTable"); |
8b93c638 | 5153 | |
7f3b0473 | 5154 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5155 | annotate_breakpoints_headers (); |
5156 | if (nr_printable_breakpoints > 0) | |
5157 | annotate_field (0); | |
4a64f543 | 5158 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5159 | if (nr_printable_breakpoints > 0) |
5160 | annotate_field (1); | |
269b11a2 | 5161 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5162 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5163 | if (nr_printable_breakpoints > 0) |
5164 | annotate_field (2); | |
4a64f543 | 5165 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5166 | if (nr_printable_breakpoints > 0) |
5167 | annotate_field (3); | |
54e52265 | 5168 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5169 | if (opts.addressprint) |
e5a67952 MS |
5170 | { |
5171 | if (nr_printable_breakpoints > 0) | |
5172 | annotate_field (4); | |
5173 | if (print_address_bits <= 32) | |
5174 | ui_out_table_header (uiout, 10, ui_left, | |
5175 | "addr", "Address"); /* 5 */ | |
5176 | else | |
5177 | ui_out_table_header (uiout, 18, ui_left, | |
5178 | "addr", "Address"); /* 5 */ | |
5179 | } | |
d7faa9e7 AC |
5180 | if (nr_printable_breakpoints > 0) |
5181 | annotate_field (5); | |
5182 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5183 | ui_out_table_body (uiout); | |
5184 | if (nr_printable_breakpoints > 0) | |
5185 | annotate_breakpoints_table (); | |
7f3b0473 | 5186 | |
c4093a6a | 5187 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5188 | { |
5189 | QUIT; | |
5190 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5191 | if (filter && !filter (b)) | |
5192 | continue; | |
5193 | ||
5194 | /* If we have an "args" string, it is a list of breakpoints to | |
5195 | accept. Skip the others. */ | |
5196 | ||
5197 | if (args != NULL && *args != '\0') | |
5198 | { | |
5199 | if (allflag) /* maintenance info breakpoint */ | |
5200 | { | |
5201 | if (parse_and_eval_long (args) != b->number) | |
5202 | continue; | |
5203 | } | |
5204 | else /* all others */ | |
5205 | { | |
5206 | if (!number_is_in_list (args, b->number)) | |
5207 | continue; | |
5208 | } | |
5209 | } | |
5210 | /* We only print out user settable breakpoints unless the | |
5211 | allflag is set. */ | |
5212 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5213 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5214 | } |
5215 | ||
3b31d625 | 5216 | do_cleanups (bkpttbl_chain); |
698384cd | 5217 | |
7f3b0473 | 5218 | if (nr_printable_breakpoints == 0) |
c906108c | 5219 | { |
4a64f543 MS |
5220 | /* If there's a filter, let the caller decide how to report |
5221 | empty list. */ | |
d77f58be SS |
5222 | if (!filter) |
5223 | { | |
e5a67952 | 5224 | if (args == NULL || *args == '\0') |
d77f58be SS |
5225 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5226 | else | |
4a64f543 | 5227 | ui_out_message (uiout, 0, |
e5a67952 MS |
5228 | "No breakpoint or watchpoint matching '%s'.\n", |
5229 | args); | |
d77f58be | 5230 | } |
c906108c SS |
5231 | } |
5232 | else | |
c4093a6a | 5233 | { |
a6d9a66e UW |
5234 | if (last_loc && !server_command) |
5235 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5236 | } |
c906108c | 5237 | |
4a64f543 | 5238 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5239 | there have been breakpoints? */ |
c906108c | 5240 | annotate_breakpoints_table_end (); |
d77f58be SS |
5241 | |
5242 | return nr_printable_breakpoints; | |
c906108c SS |
5243 | } |
5244 | ||
ad443146 SS |
5245 | /* Display the value of default-collect in a way that is generally |
5246 | compatible with the breakpoint list. */ | |
5247 | ||
5248 | static void | |
5249 | default_collect_info (void) | |
5250 | { | |
79a45e25 PA |
5251 | struct ui_out *uiout = current_uiout; |
5252 | ||
ad443146 SS |
5253 | /* If it has no value (which is frequently the case), say nothing; a |
5254 | message like "No default-collect." gets in user's face when it's | |
5255 | not wanted. */ | |
5256 | if (!*default_collect) | |
5257 | return; | |
5258 | ||
5259 | /* The following phrase lines up nicely with per-tracepoint collect | |
5260 | actions. */ | |
5261 | ui_out_text (uiout, "default collect "); | |
5262 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5263 | ui_out_text (uiout, " \n"); | |
5264 | } | |
5265 | ||
c906108c | 5266 | static void |
e5a67952 | 5267 | breakpoints_info (char *args, int from_tty) |
c906108c | 5268 | { |
e5a67952 | 5269 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5270 | |
5271 | default_collect_info (); | |
d77f58be SS |
5272 | } |
5273 | ||
5274 | static void | |
e5a67952 | 5275 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5276 | { |
e5a67952 | 5277 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 5278 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
5279 | |
5280 | if (num_printed == 0) | |
5281 | { | |
e5a67952 | 5282 | if (args == NULL || *args == '\0') |
d77f58be SS |
5283 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5284 | else | |
e5a67952 | 5285 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5286 | } |
c906108c SS |
5287 | } |
5288 | ||
7a292a7a | 5289 | static void |
e5a67952 | 5290 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5291 | { |
e5a67952 | 5292 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5293 | |
5294 | default_collect_info (); | |
c906108c SS |
5295 | } |
5296 | ||
0d381245 | 5297 | static int |
714835d5 | 5298 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5299 | struct program_space *pspace, |
714835d5 | 5300 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5301 | { |
5302 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5303 | |
0d381245 VP |
5304 | for (; bl; bl = bl->next) |
5305 | { | |
6c95b8df PA |
5306 | if (bl->pspace == pspace |
5307 | && bl->address == pc | |
0d381245 VP |
5308 | && (!overlay_debugging || bl->section == section)) |
5309 | return 1; | |
5310 | } | |
5311 | return 0; | |
5312 | } | |
5313 | ||
672f9b60 | 5314 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
5315 | concerns with logical breakpoints, so we match program spaces, not |
5316 | address spaces. */ | |
c906108c SS |
5317 | |
5318 | static void | |
6c95b8df PA |
5319 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5320 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5321 | struct obj_section *section, int thread) |
c906108c | 5322 | { |
52f0bd74 AC |
5323 | int others = 0; |
5324 | struct breakpoint *b; | |
c906108c SS |
5325 | |
5326 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
5327 | others += (user_breakpoint_p (b) |
5328 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
5329 | if (others > 0) |
5330 | { | |
a3f17187 AC |
5331 | if (others == 1) |
5332 | printf_filtered (_("Note: breakpoint ")); | |
5333 | else /* if (others == ???) */ | |
5334 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5335 | ALL_BREAKPOINTS (b) |
672f9b60 | 5336 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5337 | { |
5338 | others--; | |
5339 | printf_filtered ("%d", b->number); | |
5340 | if (b->thread == -1 && thread != -1) | |
5341 | printf_filtered (" (all threads)"); | |
5342 | else if (b->thread != -1) | |
5343 | printf_filtered (" (thread %d)", b->thread); | |
5344 | printf_filtered ("%s%s ", | |
059fb39f | 5345 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5346 | || b->enable_state == bp_call_disabled |
5347 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5348 | ? " (disabled)" |
5349 | : b->enable_state == bp_permanent | |
5350 | ? " (permanent)" | |
5351 | : ""), | |
5352 | (others > 1) ? "," | |
5353 | : ((others == 1) ? " and" : "")); | |
5354 | } | |
a3f17187 | 5355 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5356 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5357 | printf_filtered (".\n"); |
5358 | } | |
5359 | } | |
5360 | \f | |
c906108c | 5361 | |
e4f237da KB |
5362 | /* Return true iff it is meaningful to use the address member of |
5363 | BPT. For some breakpoint types, the address member is irrelevant | |
5364 | and it makes no sense to attempt to compare it to other addresses | |
5365 | (or use it for any other purpose either). | |
5366 | ||
4a64f543 MS |
5367 | More specifically, each of the following breakpoint types will |
5368 | always have a zero valued address and we don't want to mark | |
5369 | breakpoints of any of these types to be a duplicate of an actual | |
5370 | breakpoint at address zero: | |
e4f237da KB |
5371 | |
5372 | bp_watchpoint | |
2d134ed3 PA |
5373 | bp_catchpoint |
5374 | ||
5375 | */ | |
e4f237da KB |
5376 | |
5377 | static int | |
5378 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5379 | { | |
5380 | enum bptype type = bpt->type; | |
5381 | ||
2d134ed3 PA |
5382 | return (type != bp_watchpoint && type != bp_catchpoint); |
5383 | } | |
5384 | ||
5385 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5386 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5387 | ||
5388 | static int | |
4a64f543 MS |
5389 | watchpoint_locations_match (struct bp_location *loc1, |
5390 | struct bp_location *loc2) | |
2d134ed3 | 5391 | { |
3a5c3e22 PA |
5392 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
5393 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
5394 | ||
5395 | /* Both of them must exist. */ | |
5396 | gdb_assert (w1 != NULL); | |
5397 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 5398 | |
4a64f543 MS |
5399 | /* If the target can evaluate the condition expression in hardware, |
5400 | then we we need to insert both watchpoints even if they are at | |
5401 | the same place. Otherwise the watchpoint will only trigger when | |
5402 | the condition of whichever watchpoint was inserted evaluates to | |
5403 | true, not giving a chance for GDB to check the condition of the | |
5404 | other watchpoint. */ | |
3a5c3e22 | 5405 | if ((w1->cond_exp |
4a64f543 MS |
5406 | && target_can_accel_watchpoint_condition (loc1->address, |
5407 | loc1->length, | |
0cf6dd15 | 5408 | loc1->watchpoint_type, |
3a5c3e22 PA |
5409 | w1->cond_exp)) |
5410 | || (w2->cond_exp | |
4a64f543 MS |
5411 | && target_can_accel_watchpoint_condition (loc2->address, |
5412 | loc2->length, | |
0cf6dd15 | 5413 | loc2->watchpoint_type, |
3a5c3e22 | 5414 | w2->cond_exp))) |
0cf6dd15 TJB |
5415 | return 0; |
5416 | ||
85d721b8 PA |
5417 | /* Note that this checks the owner's type, not the location's. In |
5418 | case the target does not support read watchpoints, but does | |
5419 | support access watchpoints, we'll have bp_read_watchpoint | |
5420 | watchpoints with hw_access locations. Those should be considered | |
5421 | duplicates of hw_read locations. The hw_read locations will | |
5422 | become hw_access locations later. */ | |
2d134ed3 PA |
5423 | return (loc1->owner->type == loc2->owner->type |
5424 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5425 | && loc1->address == loc2->address | |
5426 | && loc1->length == loc2->length); | |
e4f237da KB |
5427 | } |
5428 | ||
6c95b8df PA |
5429 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5430 | same breakpoint location. In most targets, this can only be true | |
5431 | if ASPACE1 matches ASPACE2. On targets that have global | |
5432 | breakpoints, the address space doesn't really matter. */ | |
5433 | ||
5434 | static int | |
5435 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5436 | struct address_space *aspace2, CORE_ADDR addr2) | |
5437 | { | |
5438 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5439 | || aspace1 == aspace2) | |
5440 | && addr1 == addr2); | |
5441 | } | |
5442 | ||
f1310107 TJB |
5443 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5444 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5445 | matches ASPACE2. On targets that have global breakpoints, the address | |
5446 | space doesn't really matter. */ | |
5447 | ||
5448 | static int | |
5449 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5450 | int len1, struct address_space *aspace2, | |
5451 | CORE_ADDR addr2) | |
5452 | { | |
5453 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5454 | || aspace1 == aspace2) | |
5455 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5456 | } | |
5457 | ||
5458 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5459 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5460 | matches the breakpoint's address space. On targets that have global | |
5461 | breakpoints, the address space doesn't really matter. */ | |
5462 | ||
5463 | static int | |
5464 | breakpoint_location_address_match (struct bp_location *bl, | |
5465 | struct address_space *aspace, | |
5466 | CORE_ADDR addr) | |
5467 | { | |
5468 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5469 | aspace, addr) | |
5470 | || (bl->length | |
5471 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5472 | bl->address, bl->length, | |
5473 | aspace, addr))); | |
5474 | } | |
5475 | ||
1e4d1764 YQ |
5476 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
5477 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
5478 | true, otherwise returns false. */ | |
5479 | ||
5480 | static int | |
5481 | tracepoint_locations_match (struct bp_location *loc1, | |
5482 | struct bp_location *loc2) | |
5483 | { | |
5484 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
5485 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
5486 | locations at the same address of different tracepoints are regarded as | |
5487 | different locations. */ | |
5488 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
5489 | else | |
5490 | return 0; | |
5491 | } | |
5492 | ||
2d134ed3 PA |
5493 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5494 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5495 | represent the same location. */ | |
5496 | ||
5497 | static int | |
4a64f543 MS |
5498 | breakpoint_locations_match (struct bp_location *loc1, |
5499 | struct bp_location *loc2) | |
2d134ed3 | 5500 | { |
2bdf28a0 JK |
5501 | int hw_point1, hw_point2; |
5502 | ||
5503 | /* Both of them must not be in moribund_locations. */ | |
5504 | gdb_assert (loc1->owner != NULL); | |
5505 | gdb_assert (loc2->owner != NULL); | |
5506 | ||
5507 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5508 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5509 | |
5510 | if (hw_point1 != hw_point2) | |
5511 | return 0; | |
5512 | else if (hw_point1) | |
5513 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
5514 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
5515 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 5516 | else |
f1310107 TJB |
5517 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5518 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5519 | loc2->pspace->aspace, loc2->address) | |
5520 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5521 | } |
5522 | ||
76897487 KB |
5523 | static void |
5524 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5525 | int bnum, int have_bnum) | |
5526 | { | |
f63fbe86 MS |
5527 | /* The longest string possibly returned by hex_string_custom |
5528 | is 50 chars. These must be at least that big for safety. */ | |
5529 | char astr1[64]; | |
5530 | char astr2[64]; | |
76897487 | 5531 | |
bb599908 PH |
5532 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5533 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5534 | if (have_bnum) |
8a3fe4f8 | 5535 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5536 | bnum, astr1, astr2); |
5537 | else | |
8a3fe4f8 | 5538 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5539 | } |
5540 | ||
4a64f543 MS |
5541 | /* Adjust a breakpoint's address to account for architectural |
5542 | constraints on breakpoint placement. Return the adjusted address. | |
5543 | Note: Very few targets require this kind of adjustment. For most | |
5544 | targets, this function is simply the identity function. */ | |
76897487 KB |
5545 | |
5546 | static CORE_ADDR | |
a6d9a66e UW |
5547 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5548 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5549 | { |
a6d9a66e | 5550 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5551 | { |
5552 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5553 | return bpaddr; | |
5554 | } | |
88f7da05 KB |
5555 | else if (bptype == bp_watchpoint |
5556 | || bptype == bp_hardware_watchpoint | |
5557 | || bptype == bp_read_watchpoint | |
5558 | || bptype == bp_access_watchpoint | |
fe798b75 | 5559 | || bptype == bp_catchpoint) |
88f7da05 KB |
5560 | { |
5561 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5562 | have their addresses modified. */ | |
5563 | return bpaddr; | |
5564 | } | |
76897487 KB |
5565 | else |
5566 | { | |
5567 | CORE_ADDR adjusted_bpaddr; | |
5568 | ||
5569 | /* Some targets have architectural constraints on the placement | |
5570 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5571 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5572 | |
5573 | /* An adjusted breakpoint address can significantly alter | |
5574 | a user's expectations. Print a warning if an adjustment | |
5575 | is required. */ | |
5576 | if (adjusted_bpaddr != bpaddr) | |
5577 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5578 | ||
5579 | return adjusted_bpaddr; | |
5580 | } | |
5581 | } | |
5582 | ||
28010a5d PA |
5583 | void |
5584 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
5585 | struct breakpoint *owner) | |
7cc221ef | 5586 | { |
7cc221ef DJ |
5587 | memset (loc, 0, sizeof (*loc)); |
5588 | ||
348d480f PA |
5589 | gdb_assert (ops != NULL); |
5590 | ||
28010a5d PA |
5591 | loc->ops = ops; |
5592 | loc->owner = owner; | |
511a6cd4 | 5593 | loc->cond = NULL; |
0d381245 VP |
5594 | loc->shlib_disabled = 0; |
5595 | loc->enabled = 1; | |
e049a4b5 | 5596 | |
28010a5d | 5597 | switch (owner->type) |
e049a4b5 DJ |
5598 | { |
5599 | case bp_breakpoint: | |
5600 | case bp_until: | |
5601 | case bp_finish: | |
5602 | case bp_longjmp: | |
5603 | case bp_longjmp_resume: | |
186c406b TT |
5604 | case bp_exception: |
5605 | case bp_exception_resume: | |
e049a4b5 | 5606 | case bp_step_resume: |
2c03e5be | 5607 | case bp_hp_step_resume: |
e049a4b5 DJ |
5608 | case bp_watchpoint_scope: |
5609 | case bp_call_dummy: | |
aa7d318d | 5610 | case bp_std_terminate: |
e049a4b5 DJ |
5611 | case bp_shlib_event: |
5612 | case bp_thread_event: | |
5613 | case bp_overlay_event: | |
4efc6507 | 5614 | case bp_jit_event: |
0fd8e87f | 5615 | case bp_longjmp_master: |
aa7d318d | 5616 | case bp_std_terminate_master: |
186c406b | 5617 | case bp_exception_master: |
0e30163f JK |
5618 | case bp_gnu_ifunc_resolver: |
5619 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5620 | loc->loc_type = bp_loc_software_breakpoint; |
5621 | break; | |
5622 | case bp_hardware_breakpoint: | |
5623 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5624 | break; | |
5625 | case bp_hardware_watchpoint: | |
5626 | case bp_read_watchpoint: | |
5627 | case bp_access_watchpoint: | |
5628 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5629 | break; | |
5630 | case bp_watchpoint: | |
ce78b96d | 5631 | case bp_catchpoint: |
15c3d785 PA |
5632 | case bp_tracepoint: |
5633 | case bp_fast_tracepoint: | |
0fb4aa4b | 5634 | case bp_static_tracepoint: |
e049a4b5 DJ |
5635 | loc->loc_type = bp_loc_other; |
5636 | break; | |
5637 | default: | |
e2e0b3e5 | 5638 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5639 | } |
5640 | ||
f431efe5 | 5641 | loc->refc = 1; |
28010a5d PA |
5642 | } |
5643 | ||
5644 | /* Allocate a struct bp_location. */ | |
5645 | ||
5646 | static struct bp_location * | |
5647 | allocate_bp_location (struct breakpoint *bpt) | |
5648 | { | |
348d480f PA |
5649 | return bpt->ops->allocate_location (bpt); |
5650 | } | |
7cc221ef | 5651 | |
f431efe5 PA |
5652 | static void |
5653 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 5654 | { |
348d480f | 5655 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
5656 | xfree (loc); |
5657 | } | |
5658 | ||
f431efe5 PA |
5659 | /* Increment reference count. */ |
5660 | ||
5661 | static void | |
5662 | incref_bp_location (struct bp_location *bl) | |
5663 | { | |
5664 | ++bl->refc; | |
5665 | } | |
5666 | ||
5667 | /* Decrement reference count. If the reference count reaches 0, | |
5668 | destroy the bp_location. Sets *BLP to NULL. */ | |
5669 | ||
5670 | static void | |
5671 | decref_bp_location (struct bp_location **blp) | |
5672 | { | |
0807b50c PA |
5673 | gdb_assert ((*blp)->refc > 0); |
5674 | ||
f431efe5 PA |
5675 | if (--(*blp)->refc == 0) |
5676 | free_bp_location (*blp); | |
5677 | *blp = NULL; | |
5678 | } | |
5679 | ||
346774a9 | 5680 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 5681 | |
346774a9 PA |
5682 | static void |
5683 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 5684 | { |
346774a9 | 5685 | struct breakpoint *b1; |
c906108c | 5686 | |
346774a9 PA |
5687 | /* Add this breakpoint to the end of the chain so that a list of |
5688 | breakpoints will come out in order of increasing numbers. */ | |
5689 | ||
5690 | b1 = breakpoint_chain; | |
5691 | if (b1 == 0) | |
5692 | breakpoint_chain = b; | |
5693 | else | |
5694 | { | |
5695 | while (b1->next) | |
5696 | b1 = b1->next; | |
5697 | b1->next = b; | |
5698 | } | |
5699 | } | |
5700 | ||
5701 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
5702 | ||
5703 | static void | |
5704 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
5705 | struct gdbarch *gdbarch, | |
28010a5d | 5706 | enum bptype bptype, |
c0a91b2b | 5707 | const struct breakpoint_ops *ops) |
346774a9 | 5708 | { |
c906108c | 5709 | memset (b, 0, sizeof (*b)); |
2219d63c | 5710 | |
348d480f PA |
5711 | gdb_assert (ops != NULL); |
5712 | ||
28010a5d | 5713 | b->ops = ops; |
4d28f7a8 | 5714 | b->type = bptype; |
a6d9a66e | 5715 | b->gdbarch = gdbarch; |
c906108c SS |
5716 | b->language = current_language->la_language; |
5717 | b->input_radix = input_radix; | |
5718 | b->thread = -1; | |
b5de0fa7 | 5719 | b->enable_state = bp_enabled; |
c906108c SS |
5720 | b->next = 0; |
5721 | b->silent = 0; | |
5722 | b->ignore_count = 0; | |
5723 | b->commands = NULL; | |
818dd999 | 5724 | b->frame_id = null_frame_id; |
0d381245 | 5725 | b->condition_not_parsed = 0; |
84f4c1fe | 5726 | b->py_bp_object = NULL; |
d0fb5eae | 5727 | b->related_breakpoint = b; |
346774a9 PA |
5728 | } |
5729 | ||
5730 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
5731 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
5732 | |
5733 | static struct breakpoint * | |
5734 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 5735 | enum bptype bptype, |
c0a91b2b | 5736 | const struct breakpoint_ops *ops) |
346774a9 PA |
5737 | { |
5738 | struct breakpoint *b = XNEW (struct breakpoint); | |
5739 | ||
348d480f | 5740 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 5741 | add_to_breakpoint_chain (b); |
0d381245 VP |
5742 | return b; |
5743 | } | |
5744 | ||
0e30163f JK |
5745 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5746 | resolutions should be made as the user specified the location explicitly | |
5747 | enough. */ | |
5748 | ||
0d381245 | 5749 | static void |
0e30163f | 5750 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5751 | { |
2bdf28a0 JK |
5752 | gdb_assert (loc->owner != NULL); |
5753 | ||
0d381245 | 5754 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5755 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5756 | || is_tracepoint (loc->owner)) |
0d381245 | 5757 | { |
0e30163f JK |
5758 | int is_gnu_ifunc; |
5759 | ||
5760 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5761 | NULL, NULL, &is_gnu_ifunc); | |
5762 | ||
5763 | if (is_gnu_ifunc && !explicit_loc) | |
5764 | { | |
5765 | struct breakpoint *b = loc->owner; | |
5766 | ||
5767 | gdb_assert (loc->pspace == current_program_space); | |
5768 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5769 | &loc->requested_address)) | |
5770 | { | |
5771 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5772 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5773 | loc->requested_address, | |
5774 | b->type); | |
5775 | } | |
5776 | else if (b->type == bp_breakpoint && b->loc == loc | |
5777 | && loc->next == NULL && b->related_breakpoint == b) | |
5778 | { | |
5779 | /* Create only the whole new breakpoint of this type but do not | |
5780 | mess more complicated breakpoints with multiple locations. */ | |
5781 | b->type = bp_gnu_ifunc_resolver; | |
5782 | } | |
5783 | } | |
5784 | ||
0d381245 VP |
5785 | if (loc->function_name) |
5786 | loc->function_name = xstrdup (loc->function_name); | |
5787 | } | |
5788 | } | |
5789 | ||
a6d9a66e | 5790 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 5791 | struct gdbarch * |
a6d9a66e UW |
5792 | get_sal_arch (struct symtab_and_line sal) |
5793 | { | |
5794 | if (sal.section) | |
5795 | return get_objfile_arch (sal.section->objfile); | |
5796 | if (sal.symtab) | |
5797 | return get_objfile_arch (sal.symtab->objfile); | |
5798 | ||
5799 | return NULL; | |
5800 | } | |
5801 | ||
346774a9 PA |
5802 | /* Low level routine for partially initializing a breakpoint of type |
5803 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 5804 | file name, and line number are provided by SAL. |
0d381245 VP |
5805 | |
5806 | It is expected that the caller will complete the initialization of | |
5807 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 5808 | information regarding the creation of a new breakpoint. */ |
0d381245 | 5809 | |
346774a9 PA |
5810 | static void |
5811 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 5812 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5813 | const struct breakpoint_ops *ops) |
0d381245 | 5814 | { |
28010a5d | 5815 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 5816 | |
3742cc8b | 5817 | add_location_to_breakpoint (b, &sal); |
0d381245 | 5818 | |
6c95b8df PA |
5819 | if (bptype != bp_catchpoint) |
5820 | gdb_assert (sal.pspace != NULL); | |
5821 | ||
6c95b8df PA |
5822 | /* Store the program space that was used to set the breakpoint, for |
5823 | breakpoint resetting. */ | |
5824 | b->pspace = sal.pspace; | |
0d381245 VP |
5825 | |
5826 | if (sal.symtab == NULL) | |
5827 | b->source_file = NULL; | |
5828 | else | |
1b36a34b | 5829 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5830 | b->line_number = sal.line; |
5831 | ||
c906108c | 5832 | breakpoints_changed (); |
346774a9 | 5833 | } |
c906108c | 5834 | |
346774a9 PA |
5835 | /* set_raw_breakpoint is a low level routine for allocating and |
5836 | partially initializing a breakpoint of type BPTYPE. The newly | |
5837 | created breakpoint's address, section, source file name, and line | |
5838 | number are provided by SAL. The newly created and partially | |
5839 | initialized breakpoint is added to the breakpoint chain and | |
5840 | is also returned as the value of this function. | |
5841 | ||
5842 | It is expected that the caller will complete the initialization of | |
5843 | the newly created breakpoint struct as well as output any status | |
5844 | information regarding the creation of a new breakpoint. In | |
5845 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5846 | number! Care should be taken to not allow an error to occur | |
5847 | prior to completing the initialization of the breakpoint. If this | |
5848 | should happen, a bogus breakpoint will be left on the chain. */ | |
5849 | ||
5850 | struct breakpoint * | |
5851 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 5852 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5853 | const struct breakpoint_ops *ops) |
346774a9 PA |
5854 | { |
5855 | struct breakpoint *b = XNEW (struct breakpoint); | |
5856 | ||
348d480f | 5857 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 5858 | add_to_breakpoint_chain (b); |
c906108c SS |
5859 | return b; |
5860 | } | |
5861 | ||
c2c6d25f JM |
5862 | |
5863 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5864 | instruction, hard-wired into the inferior's code. */ | |
5865 | void | |
5866 | make_breakpoint_permanent (struct breakpoint *b) | |
5867 | { | |
0d381245 | 5868 | struct bp_location *bl; |
cc59ec59 | 5869 | |
b5de0fa7 | 5870 | b->enable_state = bp_permanent; |
c2c6d25f | 5871 | |
4a64f543 MS |
5872 | /* By definition, permanent breakpoints are already present in the |
5873 | code. Mark all locations as inserted. For now, | |
5874 | make_breakpoint_permanent is called in just one place, so it's | |
5875 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 5876 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
5877 | for (bl = b->loc; bl; bl = bl->next) |
5878 | bl->inserted = 1; | |
c2c6d25f JM |
5879 | } |
5880 | ||
53a5351d | 5881 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5882 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5883 | initiated the operation. */ | |
c906108c SS |
5884 | |
5885 | void | |
186c406b | 5886 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5887 | { |
35df4500 | 5888 | struct breakpoint *b, *b_tmp; |
186c406b | 5889 | int thread = tp->num; |
0fd8e87f UW |
5890 | |
5891 | /* To avoid having to rescan all objfile symbols at every step, | |
5892 | we maintain a list of continually-inserted but always disabled | |
5893 | longjmp "master" breakpoints. Here, we simply create momentary | |
5894 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5895 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5896 | if (b->pspace == current_program_space |
186c406b TT |
5897 | && (b->type == bp_longjmp_master |
5898 | || b->type == bp_exception_master)) | |
0fd8e87f | 5899 | { |
06edf0c0 PA |
5900 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
5901 | struct breakpoint *clone; | |
cc59ec59 | 5902 | |
06edf0c0 PA |
5903 | clone = momentary_breakpoint_from_master (b, type, |
5904 | &momentary_breakpoint_ops); | |
0fd8e87f UW |
5905 | clone->thread = thread; |
5906 | } | |
186c406b TT |
5907 | |
5908 | tp->initiating_frame = frame; | |
c906108c SS |
5909 | } |
5910 | ||
611c83ae | 5911 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5912 | void |
611c83ae | 5913 | delete_longjmp_breakpoint (int thread) |
c906108c | 5914 | { |
35df4500 | 5915 | struct breakpoint *b, *b_tmp; |
c906108c | 5916 | |
35df4500 | 5917 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5918 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5919 | { |
5920 | if (b->thread == thread) | |
5921 | delete_breakpoint (b); | |
5922 | } | |
c906108c SS |
5923 | } |
5924 | ||
1900040c MS |
5925 | void |
5926 | enable_overlay_breakpoints (void) | |
5927 | { | |
52f0bd74 | 5928 | struct breakpoint *b; |
1900040c MS |
5929 | |
5930 | ALL_BREAKPOINTS (b) | |
5931 | if (b->type == bp_overlay_event) | |
5932 | { | |
5933 | b->enable_state = bp_enabled; | |
b60e7edf | 5934 | update_global_location_list (1); |
c02f5703 | 5935 | overlay_events_enabled = 1; |
1900040c MS |
5936 | } |
5937 | } | |
5938 | ||
5939 | void | |
5940 | disable_overlay_breakpoints (void) | |
5941 | { | |
52f0bd74 | 5942 | struct breakpoint *b; |
1900040c MS |
5943 | |
5944 | ALL_BREAKPOINTS (b) | |
5945 | if (b->type == bp_overlay_event) | |
5946 | { | |
5947 | b->enable_state = bp_disabled; | |
b60e7edf | 5948 | update_global_location_list (0); |
c02f5703 | 5949 | overlay_events_enabled = 0; |
1900040c MS |
5950 | } |
5951 | } | |
5952 | ||
aa7d318d TT |
5953 | /* Set an active std::terminate breakpoint for each std::terminate |
5954 | master breakpoint. */ | |
5955 | void | |
5956 | set_std_terminate_breakpoint (void) | |
5957 | { | |
35df4500 | 5958 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5959 | |
35df4500 | 5960 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5961 | if (b->pspace == current_program_space |
5962 | && b->type == bp_std_terminate_master) | |
5963 | { | |
06edf0c0 PA |
5964 | momentary_breakpoint_from_master (b, bp_std_terminate, |
5965 | &momentary_breakpoint_ops); | |
aa7d318d TT |
5966 | } |
5967 | } | |
5968 | ||
5969 | /* Delete all the std::terminate breakpoints. */ | |
5970 | void | |
5971 | delete_std_terminate_breakpoint (void) | |
5972 | { | |
35df4500 | 5973 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5974 | |
35df4500 | 5975 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5976 | if (b->type == bp_std_terminate) |
5977 | delete_breakpoint (b); | |
5978 | } | |
5979 | ||
c4093a6a | 5980 | struct breakpoint * |
a6d9a66e | 5981 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5982 | { |
5983 | struct breakpoint *b; | |
c4093a6a | 5984 | |
06edf0c0 PA |
5985 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
5986 | &internal_breakpoint_ops); | |
5987 | ||
b5de0fa7 | 5988 | b->enable_state = bp_enabled; |
c4093a6a | 5989 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5990 | b->addr_string |
5991 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5992 | |
b60e7edf | 5993 | update_global_location_list_nothrow (1); |
74960c60 | 5994 | |
c4093a6a JM |
5995 | return b; |
5996 | } | |
5997 | ||
5998 | void | |
5999 | remove_thread_event_breakpoints (void) | |
6000 | { | |
35df4500 | 6001 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6002 | |
35df4500 | 6003 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6004 | if (b->type == bp_thread_event |
6005 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6006 | delete_breakpoint (b); |
6007 | } | |
6008 | ||
0101ce28 JJ |
6009 | struct lang_and_radix |
6010 | { | |
6011 | enum language lang; | |
6012 | int radix; | |
6013 | }; | |
6014 | ||
4efc6507 DE |
6015 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6016 | ||
6017 | struct breakpoint * | |
6018 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6019 | { | |
6020 | struct breakpoint *b; | |
6021 | ||
06edf0c0 PA |
6022 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
6023 | &internal_breakpoint_ops); | |
4efc6507 DE |
6024 | update_global_location_list_nothrow (1); |
6025 | return b; | |
6026 | } | |
0101ce28 | 6027 | |
03673fc7 PP |
6028 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6029 | ||
6030 | void | |
6031 | remove_jit_event_breakpoints (void) | |
6032 | { | |
6033 | struct breakpoint *b, *b_tmp; | |
6034 | ||
6035 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6036 | if (b->type == bp_jit_event | |
6037 | && b->loc->pspace == current_program_space) | |
6038 | delete_breakpoint (b); | |
6039 | } | |
6040 | ||
cae688ec JJ |
6041 | void |
6042 | remove_solib_event_breakpoints (void) | |
6043 | { | |
35df4500 | 6044 | struct breakpoint *b, *b_tmp; |
cae688ec | 6045 | |
35df4500 | 6046 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6047 | if (b->type == bp_shlib_event |
6048 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6049 | delete_breakpoint (b); |
6050 | } | |
6051 | ||
6052 | struct breakpoint * | |
a6d9a66e | 6053 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6054 | { |
6055 | struct breakpoint *b; | |
6056 | ||
06edf0c0 PA |
6057 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
6058 | &internal_breakpoint_ops); | |
b60e7edf | 6059 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6060 | return b; |
6061 | } | |
6062 | ||
6063 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6064 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6065 | ||
6066 | void | |
cb851954 | 6067 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6068 | { |
876fa593 | 6069 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6070 | |
876fa593 | 6071 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6072 | { |
2bdf28a0 | 6073 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6074 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6075 | |
4a64f543 MS |
6076 | /* We apply the check to all breakpoints, including disabled for |
6077 | those with loc->duplicate set. This is so that when breakpoint | |
6078 | becomes enabled, or the duplicate is removed, gdb will try to | |
6079 | insert all breakpoints. If we don't set shlib_disabled here, | |
6080 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6081 | if (((b->type == bp_breakpoint) |
508ccb1f | 6082 | || (b->type == bp_jit_event) |
1042e4c0 | 6083 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6084 | || (is_tracepoint (b))) |
6c95b8df | 6085 | && loc->pspace == current_program_space |
0d381245 | 6086 | && !loc->shlib_disabled |
a77053c2 | 6087 | #ifdef PC_SOLIB |
0d381245 | 6088 | && PC_SOLIB (loc->address) |
a77053c2 | 6089 | #else |
6c95b8df | 6090 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6091 | #endif |
6092 | ) | |
0d381245 VP |
6093 | { |
6094 | loc->shlib_disabled = 1; | |
6095 | } | |
cae688ec JJ |
6096 | } |
6097 | } | |
6098 | ||
1e4d1764 YQ |
6099 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
6100 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 6101 | disabled. */ |
84acb35a | 6102 | |
75149521 | 6103 | static void |
84acb35a JJ |
6104 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6105 | { | |
876fa593 | 6106 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6107 | int disabled_shlib_breaks = 0; |
6108 | ||
c86cf029 VP |
6109 | /* SunOS a.out shared libraries are always mapped, so do not |
6110 | disable breakpoints; they will only be reported as unloaded | |
6111 | through clear_solib when GDB discards its shared library | |
6112 | list. See clear_solib for more information. */ | |
6113 | if (exec_bfd != NULL | |
6114 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6115 | return; | |
6116 | ||
876fa593 | 6117 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6118 | { |
2bdf28a0 | 6119 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6120 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6121 | |
1e4d1764 | 6122 | if (solib->pspace == loc->pspace |
e2dd7057 | 6123 | && !loc->shlib_disabled |
1e4d1764 YQ |
6124 | && (((b->type == bp_breakpoint |
6125 | || b->type == bp_jit_event | |
6126 | || b->type == bp_hardware_breakpoint) | |
6127 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
6128 | || loc->loc_type == bp_loc_software_breakpoint)) | |
6129 | || is_tracepoint (b)) | |
e2dd7057 | 6130 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6131 | { |
e2dd7057 PP |
6132 | loc->shlib_disabled = 1; |
6133 | /* At this point, we cannot rely on remove_breakpoint | |
6134 | succeeding so we must mark the breakpoint as not inserted | |
6135 | to prevent future errors occurring in remove_breakpoints. */ | |
6136 | loc->inserted = 0; | |
8d3788bd VP |
6137 | |
6138 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6139 | observer_notify_breakpoint_modified (b); | |
6140 | ||
e2dd7057 PP |
6141 | if (!disabled_shlib_breaks) |
6142 | { | |
6143 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6144 | warning (_("Temporarily disabling breakpoints " |
6145 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6146 | solib->so_name); |
84acb35a | 6147 | } |
e2dd7057 | 6148 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6149 | } |
6150 | } | |
84acb35a JJ |
6151 | } |
6152 | ||
ce78b96d JB |
6153 | /* FORK & VFORK catchpoints. */ |
6154 | ||
e29a4733 PA |
6155 | /* An instance of this type is used to represent a fork or vfork |
6156 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
6157 | class; users downcast to "struct breakpoint *" when needed. A | |
6158 | breakpoint is really of this type iff its ops pointer points to | |
6159 | CATCH_FORK_BREAKPOINT_OPS. */ | |
6160 | ||
6161 | struct fork_catchpoint | |
6162 | { | |
6163 | /* The base class. */ | |
6164 | struct breakpoint base; | |
6165 | ||
6166 | /* Process id of a child process whose forking triggered this | |
6167 | catchpoint. This field is only valid immediately after this | |
6168 | catchpoint has triggered. */ | |
6169 | ptid_t forked_inferior_pid; | |
6170 | }; | |
6171 | ||
4a64f543 MS |
6172 | /* Implement the "insert" breakpoint_ops method for fork |
6173 | catchpoints. */ | |
ce78b96d | 6174 | |
77b06cd7 TJB |
6175 | static int |
6176 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6177 | { |
77b06cd7 | 6178 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6179 | } |
6180 | ||
4a64f543 MS |
6181 | /* Implement the "remove" breakpoint_ops method for fork |
6182 | catchpoints. */ | |
ce78b96d JB |
6183 | |
6184 | static int | |
77b06cd7 | 6185 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6186 | { |
6187 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6188 | } | |
6189 | ||
6190 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6191 | catchpoints. */ | |
6192 | ||
6193 | static int | |
f1310107 TJB |
6194 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6195 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6196 | { |
e29a4733 PA |
6197 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6198 | ||
6199 | return inferior_has_forked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6200 | } |
6201 | ||
4a64f543 MS |
6202 | /* Implement the "print_it" breakpoint_ops method for fork |
6203 | catchpoints. */ | |
ce78b96d JB |
6204 | |
6205 | static enum print_stop_action | |
348d480f | 6206 | print_it_catch_fork (bpstat bs) |
ce78b96d | 6207 | { |
36dfb11c | 6208 | struct ui_out *uiout = current_uiout; |
348d480f PA |
6209 | struct breakpoint *b = bs->breakpoint_at; |
6210 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 6211 | |
ce78b96d | 6212 | annotate_catchpoint (b->number); |
36dfb11c TT |
6213 | if (b->disposition == disp_del) |
6214 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6215 | else | |
6216 | ui_out_text (uiout, "\nCatchpoint "); | |
6217 | if (ui_out_is_mi_like_p (uiout)) | |
6218 | { | |
6219 | ui_out_field_string (uiout, "reason", | |
6220 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
6221 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6222 | } | |
6223 | ui_out_field_int (uiout, "bkptno", b->number); | |
6224 | ui_out_text (uiout, " (forked process "); | |
6225 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6226 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6227 | return PRINT_SRC_AND_LOC; |
6228 | } | |
6229 | ||
4a64f543 MS |
6230 | /* Implement the "print_one" breakpoint_ops method for fork |
6231 | catchpoints. */ | |
ce78b96d JB |
6232 | |
6233 | static void | |
a6d9a66e | 6234 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6235 | { |
e29a4733 | 6236 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6237 | struct value_print_options opts; |
79a45e25 | 6238 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6239 | |
6240 | get_user_print_options (&opts); | |
6241 | ||
4a64f543 MS |
6242 | /* Field 4, the address, is omitted (which makes the columns not |
6243 | line up too nicely with the headers, but the effect is relatively | |
6244 | readable). */ | |
79a45b7d | 6245 | if (opts.addressprint) |
ce78b96d JB |
6246 | ui_out_field_skip (uiout, "addr"); |
6247 | annotate_field (5); | |
6248 | ui_out_text (uiout, "fork"); | |
e29a4733 | 6249 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6250 | { |
6251 | ui_out_text (uiout, ", process "); | |
6252 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6253 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6254 | ui_out_spaces (uiout, 1); |
6255 | } | |
6256 | } | |
6257 | ||
6258 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6259 | catchpoints. */ | |
6260 | ||
6261 | static void | |
6262 | print_mention_catch_fork (struct breakpoint *b) | |
6263 | { | |
6264 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6265 | } | |
6266 | ||
6149aea9 PA |
6267 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6268 | catchpoints. */ | |
6269 | ||
6270 | static void | |
6271 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6272 | { | |
6273 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 6274 | print_recreate_thread (b, fp); |
6149aea9 PA |
6275 | } |
6276 | ||
ce78b96d JB |
6277 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6278 | ||
2060206e | 6279 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 6280 | |
4a64f543 MS |
6281 | /* Implement the "insert" breakpoint_ops method for vfork |
6282 | catchpoints. */ | |
ce78b96d | 6283 | |
77b06cd7 TJB |
6284 | static int |
6285 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6286 | { |
77b06cd7 | 6287 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6288 | } |
6289 | ||
4a64f543 MS |
6290 | /* Implement the "remove" breakpoint_ops method for vfork |
6291 | catchpoints. */ | |
ce78b96d JB |
6292 | |
6293 | static int | |
77b06cd7 | 6294 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6295 | { |
6296 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6297 | } | |
6298 | ||
6299 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6300 | catchpoints. */ | |
6301 | ||
6302 | static int | |
f1310107 TJB |
6303 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6304 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6305 | { |
e29a4733 PA |
6306 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6307 | ||
6308 | return inferior_has_vforked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6309 | } |
6310 | ||
4a64f543 MS |
6311 | /* Implement the "print_it" breakpoint_ops method for vfork |
6312 | catchpoints. */ | |
ce78b96d JB |
6313 | |
6314 | static enum print_stop_action | |
348d480f | 6315 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 6316 | { |
36dfb11c | 6317 | struct ui_out *uiout = current_uiout; |
348d480f | 6318 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
6319 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
6320 | ||
ce78b96d | 6321 | annotate_catchpoint (b->number); |
36dfb11c TT |
6322 | if (b->disposition == disp_del) |
6323 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6324 | else | |
6325 | ui_out_text (uiout, "\nCatchpoint "); | |
6326 | if (ui_out_is_mi_like_p (uiout)) | |
6327 | { | |
6328 | ui_out_field_string (uiout, "reason", | |
6329 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
6330 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6331 | } | |
6332 | ui_out_field_int (uiout, "bkptno", b->number); | |
6333 | ui_out_text (uiout, " (vforked process "); | |
6334 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6335 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6336 | return PRINT_SRC_AND_LOC; |
6337 | } | |
6338 | ||
4a64f543 MS |
6339 | /* Implement the "print_one" breakpoint_ops method for vfork |
6340 | catchpoints. */ | |
ce78b96d JB |
6341 | |
6342 | static void | |
a6d9a66e | 6343 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6344 | { |
e29a4733 | 6345 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6346 | struct value_print_options opts; |
79a45e25 | 6347 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6348 | |
6349 | get_user_print_options (&opts); | |
4a64f543 MS |
6350 | /* Field 4, the address, is omitted (which makes the columns not |
6351 | line up too nicely with the headers, but the effect is relatively | |
6352 | readable). */ | |
79a45b7d | 6353 | if (opts.addressprint) |
ce78b96d JB |
6354 | ui_out_field_skip (uiout, "addr"); |
6355 | annotate_field (5); | |
6356 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 6357 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6358 | { |
6359 | ui_out_text (uiout, ", process "); | |
6360 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6361 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6362 | ui_out_spaces (uiout, 1); |
6363 | } | |
6364 | } | |
6365 | ||
6366 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6367 | catchpoints. */ | |
6368 | ||
6369 | static void | |
6370 | print_mention_catch_vfork (struct breakpoint *b) | |
6371 | { | |
6372 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6373 | } | |
6374 | ||
6149aea9 PA |
6375 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6376 | catchpoints. */ | |
6377 | ||
6378 | static void | |
6379 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6380 | { | |
6381 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 6382 | print_recreate_thread (b, fp); |
6149aea9 PA |
6383 | } |
6384 | ||
ce78b96d JB |
6385 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6386 | ||
2060206e | 6387 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 6388 | |
be5c67c1 PA |
6389 | /* An instance of this type is used to represent a syscall catchpoint. |
6390 | It includes a "struct breakpoint" as a kind of base class; users | |
6391 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6392 | really of this type iff its ops pointer points to | |
6393 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
6394 | ||
6395 | struct syscall_catchpoint | |
6396 | { | |
6397 | /* The base class. */ | |
6398 | struct breakpoint base; | |
6399 | ||
6400 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
6401 | syscall has been specified for filtering, its value is NULL. | |
6402 | Otherwise, it holds a list of all syscalls to be caught. The | |
6403 | list elements are allocated with xmalloc. */ | |
6404 | VEC(int) *syscalls_to_be_caught; | |
6405 | }; | |
6406 | ||
6407 | /* Implement the "dtor" breakpoint_ops method for syscall | |
6408 | catchpoints. */ | |
6409 | ||
6410 | static void | |
6411 | dtor_catch_syscall (struct breakpoint *b) | |
6412 | { | |
6413 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
6414 | ||
6415 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 6416 | |
2060206e | 6417 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
6418 | } |
6419 | ||
a96d9b2e SDJ |
6420 | /* Implement the "insert" breakpoint_ops method for syscall |
6421 | catchpoints. */ | |
6422 | ||
77b06cd7 TJB |
6423 | static int |
6424 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 6425 | { |
be5c67c1 | 6426 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6427 | struct inferior *inf = current_inferior (); |
6428 | ||
6429 | ++inf->total_syscalls_count; | |
be5c67c1 | 6430 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6431 | ++inf->any_syscall_count; |
6432 | else | |
6433 | { | |
6434 | int i, iter; | |
cc59ec59 | 6435 | |
a96d9b2e | 6436 | for (i = 0; |
be5c67c1 | 6437 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6438 | i++) |
6439 | { | |
6440 | int elem; | |
cc59ec59 | 6441 | |
a96d9b2e SDJ |
6442 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6443 | { | |
6444 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6445 | uintptr_t vec_addr_offset |
6446 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6447 | uintptr_t vec_addr; |
6448 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6449 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6450 | vec_addr_offset; | |
6451 | memset ((void *) vec_addr, 0, | |
6452 | (iter + 1 - old_size) * sizeof (int)); | |
6453 | } | |
6454 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6455 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6456 | } | |
6457 | } | |
6458 | ||
77b06cd7 TJB |
6459 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6460 | inf->total_syscalls_count != 0, | |
6461 | inf->any_syscall_count, | |
6462 | VEC_length (int, inf->syscalls_counts), | |
6463 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6464 | } |
6465 | ||
6466 | /* Implement the "remove" breakpoint_ops method for syscall | |
6467 | catchpoints. */ | |
6468 | ||
6469 | static int | |
77b06cd7 | 6470 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 6471 | { |
be5c67c1 | 6472 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6473 | struct inferior *inf = current_inferior (); |
6474 | ||
6475 | --inf->total_syscalls_count; | |
be5c67c1 | 6476 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6477 | --inf->any_syscall_count; |
6478 | else | |
6479 | { | |
6480 | int i, iter; | |
cc59ec59 | 6481 | |
a96d9b2e | 6482 | for (i = 0; |
be5c67c1 | 6483 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6484 | i++) |
6485 | { | |
6486 | int elem; | |
6487 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6488 | /* Shouldn't happen. */ | |
6489 | continue; | |
6490 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6491 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6492 | } | |
6493 | } | |
6494 | ||
6495 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6496 | inf->total_syscalls_count != 0, | |
6497 | inf->any_syscall_count, | |
6498 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6499 | VEC_address (int, |
6500 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6501 | } |
6502 | ||
6503 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6504 | catchpoints. */ | |
6505 | ||
6506 | static int | |
f1310107 TJB |
6507 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6508 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6509 | { |
4a64f543 MS |
6510 | /* We must check if we are catching specific syscalls in this |
6511 | breakpoint. If we are, then we must guarantee that the called | |
6512 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6513 | int syscall_number = 0; |
be5c67c1 PA |
6514 | const struct syscall_catchpoint *c |
6515 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e SDJ |
6516 | |
6517 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6518 | return 0; | |
6519 | ||
6520 | /* Now, checking if the syscall is the same. */ | |
be5c67c1 | 6521 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6522 | { |
6523 | int i, iter; | |
cc59ec59 | 6524 | |
a96d9b2e | 6525 | for (i = 0; |
be5c67c1 | 6526 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6527 | i++) |
6528 | if (syscall_number == iter) | |
6529 | break; | |
6530 | /* Not the same. */ | |
6531 | if (!iter) | |
6532 | return 0; | |
6533 | } | |
6534 | ||
6535 | return 1; | |
6536 | } | |
6537 | ||
6538 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6539 | catchpoints. */ | |
6540 | ||
6541 | static enum print_stop_action | |
348d480f | 6542 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 6543 | { |
36dfb11c | 6544 | struct ui_out *uiout = current_uiout; |
348d480f | 6545 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
6546 | /* These are needed because we want to know in which state a |
6547 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6548 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6549 | must print "called syscall" or "returned from syscall". */ | |
6550 | ptid_t ptid; | |
6551 | struct target_waitstatus last; | |
6552 | struct syscall s; | |
a96d9b2e SDJ |
6553 | char *syscall_id; |
6554 | ||
6555 | get_last_target_status (&ptid, &last); | |
6556 | ||
6557 | get_syscall_by_number (last.value.syscall_number, &s); | |
6558 | ||
6559 | annotate_catchpoint (b->number); | |
6560 | ||
36dfb11c TT |
6561 | if (b->disposition == disp_del) |
6562 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 6563 | else |
36dfb11c TT |
6564 | ui_out_text (uiout, "\nCatchpoint "); |
6565 | if (ui_out_is_mi_like_p (uiout)) | |
6566 | { | |
6567 | ui_out_field_string (uiout, "reason", | |
6568 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
6569 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
6570 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
6571 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6572 | } | |
6573 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
6574 | |
6575 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
6576 | ui_out_text (uiout, " (call to syscall "); |
6577 | else | |
6578 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 6579 | |
36dfb11c TT |
6580 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
6581 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
6582 | if (s.name != NULL) | |
6583 | ui_out_field_string (uiout, "syscall-name", s.name); | |
6584 | ||
6585 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
6586 | |
6587 | return PRINT_SRC_AND_LOC; | |
6588 | } | |
6589 | ||
6590 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6591 | catchpoints. */ | |
6592 | ||
6593 | static void | |
6594 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6595 | struct bp_location **last_loc) |
a96d9b2e | 6596 | { |
be5c67c1 | 6597 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 6598 | struct value_print_options opts; |
79a45e25 | 6599 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
6600 | |
6601 | get_user_print_options (&opts); | |
4a64f543 MS |
6602 | /* Field 4, the address, is omitted (which makes the columns not |
6603 | line up too nicely with the headers, but the effect is relatively | |
6604 | readable). */ | |
a96d9b2e SDJ |
6605 | if (opts.addressprint) |
6606 | ui_out_field_skip (uiout, "addr"); | |
6607 | annotate_field (5); | |
6608 | ||
be5c67c1 PA |
6609 | if (c->syscalls_to_be_caught |
6610 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
6611 | ui_out_text (uiout, "syscalls \""); |
6612 | else | |
6613 | ui_out_text (uiout, "syscall \""); | |
6614 | ||
be5c67c1 | 6615 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6616 | { |
6617 | int i, iter; | |
6618 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6619 | |
a96d9b2e | 6620 | for (i = 0; |
be5c67c1 | 6621 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6622 | i++) |
6623 | { | |
6624 | char *x = text; | |
6625 | struct syscall s; | |
6626 | get_syscall_by_number (iter, &s); | |
6627 | ||
6628 | if (s.name != NULL) | |
6629 | text = xstrprintf ("%s%s, ", text, s.name); | |
6630 | else | |
6631 | text = xstrprintf ("%s%d, ", text, iter); | |
6632 | ||
6633 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 6634 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
6635 | on every call. */ |
6636 | xfree (x); | |
6637 | } | |
6638 | /* Remove the last comma. */ | |
6639 | text[strlen (text) - 2] = '\0'; | |
6640 | ui_out_field_string (uiout, "what", text); | |
6641 | } | |
6642 | else | |
6643 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6644 | ui_out_text (uiout, "\" "); | |
6645 | } | |
6646 | ||
6647 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6648 | catchpoints. */ | |
6649 | ||
6650 | static void | |
6651 | print_mention_catch_syscall (struct breakpoint *b) | |
6652 | { | |
be5c67c1 PA |
6653 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6654 | ||
6655 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
6656 | { |
6657 | int i, iter; | |
6658 | ||
be5c67c1 | 6659 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
6660 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
6661 | else | |
6662 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6663 | ||
6664 | for (i = 0; | |
be5c67c1 | 6665 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6666 | i++) |
6667 | { | |
6668 | struct syscall s; | |
6669 | get_syscall_by_number (iter, &s); | |
6670 | ||
6671 | if (s.name) | |
6672 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6673 | else | |
6674 | printf_filtered (" %d", s.number); | |
6675 | } | |
6676 | printf_filtered (")"); | |
6677 | } | |
6678 | else | |
6679 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6680 | b->number); | |
6681 | } | |
6682 | ||
6149aea9 PA |
6683 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6684 | catchpoints. */ | |
6685 | ||
6686 | static void | |
6687 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6688 | { | |
be5c67c1 PA |
6689 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6690 | ||
6149aea9 PA |
6691 | fprintf_unfiltered (fp, "catch syscall"); |
6692 | ||
be5c67c1 | 6693 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
6694 | { |
6695 | int i, iter; | |
6696 | ||
6697 | for (i = 0; | |
be5c67c1 | 6698 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
6699 | i++) |
6700 | { | |
6701 | struct syscall s; | |
6702 | ||
6703 | get_syscall_by_number (iter, &s); | |
6704 | if (s.name) | |
6705 | fprintf_unfiltered (fp, " %s", s.name); | |
6706 | else | |
6707 | fprintf_unfiltered (fp, " %d", s.number); | |
6708 | } | |
6709 | } | |
d9b3f62e | 6710 | print_recreate_thread (b, fp); |
6149aea9 PA |
6711 | } |
6712 | ||
a96d9b2e SDJ |
6713 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6714 | ||
2060206e | 6715 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
6716 | |
6717 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6718 | ||
6719 | static int | |
6720 | syscall_catchpoint_p (struct breakpoint *b) | |
6721 | { | |
6722 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6723 | } | |
6724 | ||
346774a9 PA |
6725 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
6726 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
6727 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
6728 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 6729 | |
346774a9 PA |
6730 | static void |
6731 | init_catchpoint (struct breakpoint *b, | |
6732 | struct gdbarch *gdbarch, int tempflag, | |
6733 | char *cond_string, | |
c0a91b2b | 6734 | const struct breakpoint_ops *ops) |
c906108c | 6735 | { |
c5aa993b | 6736 | struct symtab_and_line sal; |
346774a9 | 6737 | |
fe39c653 | 6738 | init_sal (&sal); |
6c95b8df | 6739 | sal.pspace = current_program_space; |
c5aa993b | 6740 | |
28010a5d | 6741 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 6742 | |
1b36a34b | 6743 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 6744 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
6745 | } |
6746 | ||
28010a5d | 6747 | void |
3ea46bff | 6748 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
6749 | { |
6750 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
6751 | set_breakpoint_number (internal, b); |
6752 | if (!internal) | |
6753 | mention (b); | |
c56053d2 | 6754 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
6755 | |
6756 | if (update_gll) | |
6757 | update_global_location_list (1); | |
c56053d2 PA |
6758 | } |
6759 | ||
9b70b993 | 6760 | static void |
a6d9a66e UW |
6761 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6762 | int tempflag, char *cond_string, | |
c0a91b2b | 6763 | const struct breakpoint_ops *ops) |
c906108c | 6764 | { |
e29a4733 | 6765 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 6766 | |
e29a4733 PA |
6767 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
6768 | ||
6769 | c->forked_inferior_pid = null_ptid; | |
6770 | ||
3ea46bff | 6771 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
6772 | } |
6773 | ||
fe798b75 JB |
6774 | /* Exec catchpoints. */ |
6775 | ||
b4d90040 PA |
6776 | /* An instance of this type is used to represent an exec catchpoint. |
6777 | It includes a "struct breakpoint" as a kind of base class; users | |
6778 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6779 | really of this type iff its ops pointer points to | |
6780 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
6781 | ||
6782 | struct exec_catchpoint | |
6783 | { | |
6784 | /* The base class. */ | |
6785 | struct breakpoint base; | |
6786 | ||
6787 | /* Filename of a program whose exec triggered this catchpoint. | |
6788 | This field is only valid immediately after this catchpoint has | |
6789 | triggered. */ | |
6790 | char *exec_pathname; | |
6791 | }; | |
6792 | ||
6793 | /* Implement the "dtor" breakpoint_ops method for exec | |
6794 | catchpoints. */ | |
6795 | ||
6796 | static void | |
6797 | dtor_catch_exec (struct breakpoint *b) | |
6798 | { | |
6799 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
6800 | ||
6801 | xfree (c->exec_pathname); | |
348d480f | 6802 | |
2060206e | 6803 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
6804 | } |
6805 | ||
77b06cd7 TJB |
6806 | static int |
6807 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6808 | { |
77b06cd7 | 6809 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6810 | } |
c906108c | 6811 | |
fe798b75 | 6812 | static int |
77b06cd7 | 6813 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6814 | { |
6815 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6816 | } | |
c906108c | 6817 | |
fe798b75 | 6818 | static int |
f1310107 TJB |
6819 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6820 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6821 | { |
b4d90040 PA |
6822 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
6823 | ||
6824 | return inferior_has_execd (inferior_ptid, &c->exec_pathname); | |
fe798b75 | 6825 | } |
c906108c | 6826 | |
fe798b75 | 6827 | static enum print_stop_action |
348d480f | 6828 | print_it_catch_exec (bpstat bs) |
fe798b75 | 6829 | { |
36dfb11c | 6830 | struct ui_out *uiout = current_uiout; |
348d480f | 6831 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
6832 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
6833 | ||
fe798b75 | 6834 | annotate_catchpoint (b->number); |
36dfb11c TT |
6835 | if (b->disposition == disp_del) |
6836 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6837 | else | |
6838 | ui_out_text (uiout, "\nCatchpoint "); | |
6839 | if (ui_out_is_mi_like_p (uiout)) | |
6840 | { | |
6841 | ui_out_field_string (uiout, "reason", | |
6842 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
6843 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6844 | } | |
6845 | ui_out_field_int (uiout, "bkptno", b->number); | |
6846 | ui_out_text (uiout, " (exec'd "); | |
6847 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
6848 | ui_out_text (uiout, "), "); | |
6849 | ||
fe798b75 | 6850 | return PRINT_SRC_AND_LOC; |
c906108c SS |
6851 | } |
6852 | ||
fe798b75 | 6853 | static void |
a6d9a66e | 6854 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 6855 | { |
b4d90040 | 6856 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 6857 | struct value_print_options opts; |
79a45e25 | 6858 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
6859 | |
6860 | get_user_print_options (&opts); | |
6861 | ||
6862 | /* Field 4, the address, is omitted (which makes the columns | |
6863 | not line up too nicely with the headers, but the effect | |
6864 | is relatively readable). */ | |
6865 | if (opts.addressprint) | |
6866 | ui_out_field_skip (uiout, "addr"); | |
6867 | annotate_field (5); | |
6868 | ui_out_text (uiout, "exec"); | |
b4d90040 | 6869 | if (c->exec_pathname != NULL) |
fe798b75 JB |
6870 | { |
6871 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 6872 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
6873 | ui_out_text (uiout, "\" "); |
6874 | } | |
6875 | } | |
6876 | ||
6877 | static void | |
6878 | print_mention_catch_exec (struct breakpoint *b) | |
6879 | { | |
6880 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6881 | } | |
6882 | ||
6149aea9 PA |
6883 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6884 | catchpoints. */ | |
6885 | ||
6886 | static void | |
6887 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6888 | { | |
6889 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 6890 | print_recreate_thread (b, fp); |
6149aea9 PA |
6891 | } |
6892 | ||
2060206e | 6893 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 6894 | |
a96d9b2e SDJ |
6895 | static void |
6896 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 6897 | const struct breakpoint_ops *ops) |
a96d9b2e | 6898 | { |
be5c67c1 | 6899 | struct syscall_catchpoint *c; |
a96d9b2e | 6900 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 6901 | |
be5c67c1 PA |
6902 | c = XNEW (struct syscall_catchpoint); |
6903 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
6904 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 6905 | |
3ea46bff | 6906 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
6907 | } |
6908 | ||
c906108c | 6909 | static int |
fba45db2 | 6910 | hw_breakpoint_used_count (void) |
c906108c | 6911 | { |
c906108c | 6912 | int i = 0; |
f1310107 TJB |
6913 | struct breakpoint *b; |
6914 | struct bp_location *bl; | |
c906108c SS |
6915 | |
6916 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6917 | { |
d6b74ac4 | 6918 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6919 | for (bl = b->loc; bl; bl = bl->next) |
6920 | { | |
6921 | /* Special types of hardware breakpoints may use more than | |
6922 | one register. */ | |
348d480f | 6923 | i += b->ops->resources_needed (bl); |
f1310107 | 6924 | } |
c5aa993b | 6925 | } |
c906108c SS |
6926 | |
6927 | return i; | |
6928 | } | |
6929 | ||
a1398e0c PA |
6930 | /* Returns the resources B would use if it were a hardware |
6931 | watchpoint. */ | |
6932 | ||
c906108c | 6933 | static int |
a1398e0c | 6934 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 6935 | { |
c906108c | 6936 | int i = 0; |
e09342b5 | 6937 | struct bp_location *bl; |
c906108c | 6938 | |
a1398e0c PA |
6939 | if (!breakpoint_enabled (b)) |
6940 | return 0; | |
6941 | ||
6942 | for (bl = b->loc; bl; bl = bl->next) | |
6943 | { | |
6944 | /* Special types of hardware watchpoints may use more than | |
6945 | one register. */ | |
6946 | i += b->ops->resources_needed (bl); | |
6947 | } | |
6948 | ||
6949 | return i; | |
6950 | } | |
6951 | ||
6952 | /* Returns the sum the used resources of all hardware watchpoints of | |
6953 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
6954 | the sum of the used resources of all hardware watchpoints of other | |
6955 | types _not_ TYPE. */ | |
6956 | ||
6957 | static int | |
6958 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
6959 | enum bptype type, int *other_type_used) | |
6960 | { | |
6961 | int i = 0; | |
6962 | struct breakpoint *b; | |
6963 | ||
c906108c SS |
6964 | *other_type_used = 0; |
6965 | ALL_BREAKPOINTS (b) | |
e09342b5 | 6966 | { |
a1398e0c PA |
6967 | if (b == except) |
6968 | continue; | |
e09342b5 TJB |
6969 | if (!breakpoint_enabled (b)) |
6970 | continue; | |
6971 | ||
a1398e0c PA |
6972 | if (b->type == type) |
6973 | i += hw_watchpoint_use_count (b); | |
6974 | else if (is_hardware_watchpoint (b)) | |
6975 | *other_type_used = 1; | |
e09342b5 TJB |
6976 | } |
6977 | ||
c906108c SS |
6978 | return i; |
6979 | } | |
6980 | ||
c906108c | 6981 | void |
fba45db2 | 6982 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6983 | { |
c5aa993b | 6984 | struct breakpoint *b; |
c906108c SS |
6985 | |
6986 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6987 | { |
cc60f2e3 | 6988 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6989 | { |
b5de0fa7 | 6990 | b->enable_state = bp_call_disabled; |
b60e7edf | 6991 | update_global_location_list (0); |
c5aa993b JM |
6992 | } |
6993 | } | |
c906108c SS |
6994 | } |
6995 | ||
6996 | void | |
fba45db2 | 6997 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6998 | { |
c5aa993b | 6999 | struct breakpoint *b; |
c906108c SS |
7000 | |
7001 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7002 | { |
cc60f2e3 | 7003 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7004 | { |
b5de0fa7 | 7005 | b->enable_state = bp_enabled; |
b60e7edf | 7006 | update_global_location_list (1); |
c5aa993b JM |
7007 | } |
7008 | } | |
c906108c SS |
7009 | } |
7010 | ||
8bea4e01 UW |
7011 | void |
7012 | disable_breakpoints_before_startup (void) | |
7013 | { | |
7014 | struct breakpoint *b; | |
7015 | int found = 0; | |
7016 | ||
7017 | ALL_BREAKPOINTS (b) | |
7018 | { | |
6c95b8df PA |
7019 | if (b->pspace != current_program_space) |
7020 | continue; | |
7021 | ||
8bea4e01 UW |
7022 | if ((b->type == bp_breakpoint |
7023 | || b->type == bp_hardware_breakpoint) | |
7024 | && breakpoint_enabled (b)) | |
7025 | { | |
7026 | b->enable_state = bp_startup_disabled; | |
7027 | found = 1; | |
7028 | } | |
7029 | } | |
7030 | ||
7031 | if (found) | |
7032 | update_global_location_list (0); | |
7033 | ||
6c95b8df | 7034 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
7035 | } |
7036 | ||
7037 | void | |
7038 | enable_breakpoints_after_startup (void) | |
7039 | { | |
7040 | struct breakpoint *b; | |
7041 | int found = 0; | |
7042 | ||
6c95b8df | 7043 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
7044 | |
7045 | ALL_BREAKPOINTS (b) | |
7046 | { | |
6c95b8df PA |
7047 | if (b->pspace != current_program_space) |
7048 | continue; | |
7049 | ||
8bea4e01 UW |
7050 | if ((b->type == bp_breakpoint |
7051 | || b->type == bp_hardware_breakpoint) | |
7052 | && b->enable_state == bp_startup_disabled) | |
7053 | { | |
7054 | b->enable_state = bp_enabled; | |
7055 | found = 1; | |
7056 | } | |
7057 | } | |
7058 | ||
7059 | if (found) | |
7060 | breakpoint_re_set (); | |
7061 | } | |
7062 | ||
c906108c SS |
7063 | |
7064 | /* Set a breakpoint that will evaporate an end of command | |
7065 | at address specified by SAL. | |
7066 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
7067 | ||
7068 | struct breakpoint * | |
a6d9a66e UW |
7069 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7070 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7071 | { |
52f0bd74 | 7072 | struct breakpoint *b; |
edb3359d DJ |
7073 | |
7074 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
7075 | one. */ | |
7076 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
7077 | ||
06edf0c0 | 7078 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
7079 | b->enable_state = bp_enabled; |
7080 | b->disposition = disp_donttouch; | |
818dd999 | 7081 | b->frame_id = frame_id; |
c906108c | 7082 | |
4a64f543 MS |
7083 | /* If we're debugging a multi-threaded program, then we want |
7084 | momentary breakpoints to be active in only a single thread of | |
7085 | control. */ | |
39f77062 KB |
7086 | if (in_thread_list (inferior_ptid)) |
7087 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 7088 | |
b60e7edf | 7089 | update_global_location_list_nothrow (1); |
74960c60 | 7090 | |
c906108c SS |
7091 | return b; |
7092 | } | |
611c83ae | 7093 | |
06edf0c0 PA |
7094 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
7095 | The new breakpoint will have type TYPE, and use OPS as it | |
7096 | breakpoint_ops. */ | |
e58b0e63 | 7097 | |
06edf0c0 PA |
7098 | static struct breakpoint * |
7099 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7100 | enum bptype type, | |
c0a91b2b | 7101 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
7102 | { |
7103 | struct breakpoint *copy; | |
7104 | ||
06edf0c0 | 7105 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 7106 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7107 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7108 | |
a6d9a66e | 7109 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7110 | copy->loc->requested_address = orig->loc->requested_address; |
7111 | copy->loc->address = orig->loc->address; | |
7112 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7113 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
7114 | |
7115 | if (orig->source_file == NULL) | |
7116 | copy->source_file = NULL; | |
7117 | else | |
7118 | copy->source_file = xstrdup (orig->source_file); | |
7119 | ||
7120 | copy->line_number = orig->line_number; | |
7121 | copy->frame_id = orig->frame_id; | |
7122 | copy->thread = orig->thread; | |
6c95b8df | 7123 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7124 | |
7125 | copy->enable_state = bp_enabled; | |
7126 | copy->disposition = disp_donttouch; | |
7127 | copy->number = internal_breakpoint_number--; | |
7128 | ||
7129 | update_global_location_list_nothrow (0); | |
7130 | return copy; | |
7131 | } | |
7132 | ||
06edf0c0 PA |
7133 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7134 | ORIG is NULL. */ | |
7135 | ||
7136 | struct breakpoint * | |
7137 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7138 | { | |
7139 | /* If there's nothing to clone, then return nothing. */ | |
7140 | if (orig == NULL) | |
7141 | return NULL; | |
7142 | ||
7143 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
7144 | } | |
7145 | ||
611c83ae | 7146 | struct breakpoint * |
a6d9a66e UW |
7147 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7148 | enum bptype type) | |
611c83ae PA |
7149 | { |
7150 | struct symtab_and_line sal; | |
7151 | ||
7152 | sal = find_pc_line (pc, 0); | |
7153 | sal.pc = pc; | |
7154 | sal.section = find_pc_overlay (pc); | |
7155 | sal.explicit_pc = 1; | |
7156 | ||
a6d9a66e | 7157 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7158 | } |
c906108c | 7159 | \f |
c5aa993b | 7160 | |
c906108c SS |
7161 | /* Tell the user we have just set a breakpoint B. */ |
7162 | ||
7163 | static void | |
fba45db2 | 7164 | mention (struct breakpoint *b) |
c906108c | 7165 | { |
348d480f | 7166 | b->ops->print_mention (b); |
79a45e25 | 7167 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 7168 | return; |
c906108c SS |
7169 | printf_filtered ("\n"); |
7170 | } | |
c906108c | 7171 | \f |
c5aa993b | 7172 | |
0d381245 | 7173 | static struct bp_location * |
39d61571 | 7174 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7175 | const struct symtab_and_line *sal) |
7176 | { | |
7177 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
7178 | CORE_ADDR adjusted_address; |
7179 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
7180 | ||
7181 | if (loc_gdbarch == NULL) | |
7182 | loc_gdbarch = b->gdbarch; | |
7183 | ||
7184 | /* Adjust the breakpoint's address prior to allocating a location. | |
7185 | Once we call allocate_bp_location(), that mostly uninitialized | |
7186 | location will be placed on the location chain. Adjustment of the | |
7187 | breakpoint may cause target_read_memory() to be called and we do | |
7188 | not want its scan of the location chain to find a breakpoint and | |
7189 | location that's only been partially initialized. */ | |
7190 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
7191 | sal->pc, b->type); | |
0d381245 | 7192 | |
39d61571 | 7193 | loc = allocate_bp_location (b); |
0d381245 VP |
7194 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7195 | ; | |
7196 | *tmp = loc; | |
3742cc8b | 7197 | |
0d381245 | 7198 | loc->requested_address = sal->pc; |
3742cc8b | 7199 | loc->address = adjusted_address; |
6c95b8df PA |
7200 | loc->pspace = sal->pspace; |
7201 | gdb_assert (loc->pspace != NULL); | |
0d381245 | 7202 | loc->section = sal->section; |
3742cc8b | 7203 | loc->gdbarch = loc_gdbarch; |
0e30163f JK |
7204 | set_breakpoint_location_function (loc, |
7205 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7206 | return loc; |
7207 | } | |
514f746b AR |
7208 | \f |
7209 | ||
7210 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7211 | return 0 otherwise. */ | |
7212 | ||
7213 | static int | |
7214 | bp_loc_is_permanent (struct bp_location *loc) | |
7215 | { | |
7216 | int len; | |
7217 | CORE_ADDR addr; | |
7218 | const gdb_byte *brk; | |
7219 | gdb_byte *target_mem; | |
939c61fa JK |
7220 | struct cleanup *cleanup; |
7221 | int retval = 0; | |
514f746b AR |
7222 | |
7223 | gdb_assert (loc != NULL); | |
7224 | ||
7225 | addr = loc->address; | |
a6d9a66e | 7226 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7227 | |
939c61fa JK |
7228 | /* Software breakpoints unsupported? */ |
7229 | if (brk == NULL) | |
7230 | return 0; | |
7231 | ||
514f746b AR |
7232 | target_mem = alloca (len); |
7233 | ||
939c61fa JK |
7234 | /* Enable the automatic memory restoration from breakpoints while |
7235 | we read the memory. Otherwise we could say about our temporary | |
7236 | breakpoints they are permanent. */ | |
6c95b8df PA |
7237 | cleanup = save_current_space_and_thread (); |
7238 | ||
7239 | switch_to_program_space_and_thread (loc->pspace); | |
7240 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7241 | |
514f746b AR |
7242 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7243 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7244 | retval = 1; |
514f746b | 7245 | |
939c61fa JK |
7246 | do_cleanups (cleanup); |
7247 | ||
7248 | return retval; | |
514f746b AR |
7249 | } |
7250 | ||
7251 | ||
c3f6f71d | 7252 | |
018d34a4 VP |
7253 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7254 | as textual description of the location, and COND_STRING | |
db107f19 | 7255 | as condition expression. */ |
018d34a4 VP |
7256 | |
7257 | static void | |
d9b3f62e PA |
7258 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
7259 | struct symtabs_and_lines sals, char *addr_string, | |
7260 | char *cond_string, | |
7261 | enum bptype type, enum bpdisp disposition, | |
7262 | int thread, int task, int ignore_count, | |
c0a91b2b | 7263 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e | 7264 | int enabled, int internal, int display_canonical) |
018d34a4 | 7265 | { |
0d381245 | 7266 | int i; |
018d34a4 VP |
7267 | |
7268 | if (type == bp_hardware_breakpoint) | |
7269 | { | |
fbbd034e AS |
7270 | int target_resources_ok; |
7271 | ||
7272 | i = hw_breakpoint_used_count (); | |
7273 | target_resources_ok = | |
7274 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
7275 | i + 1, 0); |
7276 | if (target_resources_ok == 0) | |
7277 | error (_("No hardware breakpoint support in the target.")); | |
7278 | else if (target_resources_ok < 0) | |
7279 | error (_("Hardware breakpoints used exceeds limit.")); | |
7280 | } | |
7281 | ||
6c95b8df PA |
7282 | gdb_assert (sals.nelts > 0); |
7283 | ||
0d381245 VP |
7284 | for (i = 0; i < sals.nelts; ++i) |
7285 | { | |
7286 | struct symtab_and_line sal = sals.sals[i]; | |
7287 | struct bp_location *loc; | |
7288 | ||
7289 | if (from_tty) | |
5af949e3 UW |
7290 | { |
7291 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7292 | if (!loc_gdbarch) | |
7293 | loc_gdbarch = gdbarch; | |
7294 | ||
7295 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7296 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7297 | } |
0d381245 VP |
7298 | |
7299 | if (i == 0) | |
7300 | { | |
d9b3f62e | 7301 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 7302 | b->thread = thread; |
4a306c9a | 7303 | b->task = task; |
018d34a4 | 7304 | |
0d381245 VP |
7305 | b->cond_string = cond_string; |
7306 | b->ignore_count = ignore_count; | |
41447f92 | 7307 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7308 | b->disposition = disposition; |
6c95b8df PA |
7309 | b->pspace = sals.sals[0].pspace; |
7310 | ||
0fb4aa4b PA |
7311 | if (type == bp_static_tracepoint) |
7312 | { | |
d9b3f62e | 7313 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
7314 | struct static_tracepoint_marker marker; |
7315 | ||
7316 | if (is_marker_spec (addr_string)) | |
7317 | { | |
7318 | /* We already know the marker exists, otherwise, we | |
7319 | wouldn't see a sal for it. */ | |
7320 | char *p = &addr_string[3]; | |
7321 | char *endp; | |
7322 | char *marker_str; | |
0fb4aa4b | 7323 | |
e9cafbcc | 7324 | p = skip_spaces (p); |
0fb4aa4b | 7325 | |
e9cafbcc | 7326 | endp = skip_to_space (p); |
0fb4aa4b PA |
7327 | |
7328 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 7329 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 7330 | |
3e43a32a MS |
7331 | printf_filtered (_("Probed static tracepoint " |
7332 | "marker \"%s\"\n"), | |
d9b3f62e | 7333 | t->static_trace_marker_id); |
0fb4aa4b PA |
7334 | } |
7335 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7336 | { | |
d9b3f62e | 7337 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
7338 | release_static_tracepoint_marker (&marker); |
7339 | ||
3e43a32a MS |
7340 | printf_filtered (_("Probed static tracepoint " |
7341 | "marker \"%s\"\n"), | |
d9b3f62e | 7342 | t->static_trace_marker_id); |
0fb4aa4b PA |
7343 | } |
7344 | else | |
3e43a32a MS |
7345 | warning (_("Couldn't determine the static " |
7346 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7347 | } |
7348 | ||
6c95b8df | 7349 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7350 | && (b->type == bp_breakpoint |
7351 | || b->type == bp_hardware_breakpoint)) | |
7352 | b->enable_state = bp_startup_disabled; | |
7353 | ||
0d381245 VP |
7354 | loc = b->loc; |
7355 | } | |
7356 | else | |
018d34a4 | 7357 | { |
39d61571 | 7358 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7359 | } |
7360 | ||
514f746b AR |
7361 | if (bp_loc_is_permanent (loc)) |
7362 | make_breakpoint_permanent (b); | |
7363 | ||
0d381245 VP |
7364 | if (b->cond_string) |
7365 | { | |
7366 | char *arg = b->cond_string; | |
d32a6982 | 7367 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7368 | if (*arg) |
db107f19 | 7369 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7370 | } |
0d381245 | 7371 | } |
018d34a4 | 7372 | |
56435ebe | 7373 | b->display_canonical = display_canonical; |
018d34a4 VP |
7374 | if (addr_string) |
7375 | b->addr_string = addr_string; | |
7376 | else | |
7377 | /* addr_string has to be used or breakpoint_re_set will delete | |
7378 | me. */ | |
5af949e3 UW |
7379 | b->addr_string |
7380 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
d9b3f62e | 7381 | } |
018d34a4 | 7382 | |
d9b3f62e PA |
7383 | static void |
7384 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
7385 | struct symtabs_and_lines sals, char *addr_string, | |
7386 | char *cond_string, | |
7387 | enum bptype type, enum bpdisp disposition, | |
7388 | int thread, int task, int ignore_count, | |
c0a91b2b | 7389 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e PA |
7390 | int enabled, int internal, int display_canonical) |
7391 | { | |
7392 | struct breakpoint *b; | |
7393 | struct cleanup *old_chain; | |
7394 | ||
7395 | if (is_tracepoint_type (type)) | |
7396 | { | |
7397 | struct tracepoint *t; | |
7398 | ||
7399 | t = XCNEW (struct tracepoint); | |
7400 | b = &t->base; | |
7401 | } | |
7402 | else | |
7403 | b = XNEW (struct breakpoint); | |
7404 | ||
7405 | old_chain = make_cleanup (xfree, b); | |
7406 | ||
7407 | init_breakpoint_sal (b, gdbarch, | |
7408 | sals, addr_string, | |
7409 | cond_string, | |
7410 | type, disposition, | |
7411 | thread, task, ignore_count, | |
7412 | ops, from_tty, | |
7413 | enabled, internal, display_canonical); | |
7414 | discard_cleanups (old_chain); | |
7415 | ||
3ea46bff | 7416 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
7417 | } |
7418 | ||
ed0616c6 VP |
7419 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7420 | elements to fill the void space. */ | |
2c0b251b PA |
7421 | static void |
7422 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7423 | { |
7424 | int i = index_to_remove+1; | |
7425 | int last_index = sal->nelts-1; | |
7426 | ||
7427 | for (;i <= last_index; ++i) | |
7428 | sal->sals[i-1] = sal->sals[i]; | |
7429 | ||
7430 | --(sal->nelts); | |
7431 | } | |
7432 | ||
6c95b8df PA |
7433 | /* If appropriate, obtains all sals that correspond to the same file |
7434 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7435 | will want to set a breakpoint at foo.c:line, and not really care | |
7436 | about program spaces. This is done only if SAL does not have | |
7437 | explicit PC and has line and file information. If we got just a | |
7438 | single expanded sal, return the original. | |
ed0616c6 | 7439 | |
6c95b8df PA |
7440 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7441 | which the name of enclosing function is different from SAL. This | |
7442 | makes sure that if we have breakpoint originally set in template | |
7443 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7444 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7445 | |
2c0b251b | 7446 | static struct symtabs_and_lines |
ed0616c6 VP |
7447 | expand_line_sal_maybe (struct symtab_and_line sal) |
7448 | { | |
7449 | struct symtabs_and_lines expanded; | |
7450 | CORE_ADDR original_pc = sal.pc; | |
7451 | char *original_function = NULL; | |
7452 | int found; | |
7453 | int i; | |
6c95b8df | 7454 | struct cleanup *old_chain; |
ed0616c6 VP |
7455 | |
7456 | /* If we have explicit pc, don't expand. | |
7457 | If we have no line number, we can't expand. */ | |
7458 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7459 | { | |
7460 | expanded.nelts = 1; | |
7461 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7462 | expanded.sals[0] = sal; | |
7463 | return expanded; | |
7464 | } | |
7465 | ||
7466 | sal.pc = 0; | |
6c95b8df PA |
7467 | |
7468 | old_chain = save_current_space_and_thread (); | |
7469 | ||
7470 | switch_to_program_space_and_thread (sal.pspace); | |
7471 | ||
ed0616c6 | 7472 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7473 | |
7474 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7475 | expanded = expand_line_sal (sal); |
6c95b8df | 7476 | |
ed0616c6 VP |
7477 | if (expanded.nelts == 1) |
7478 | { | |
3dba1c98 JB |
7479 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7480 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7481 | xfree (expanded.sals); |
7482 | expanded.nelts = 1; | |
7483 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7484 | sal.pc = original_pc; | |
7485 | expanded.sals[0] = sal; | |
3dba1c98 | 7486 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7487 | do_cleanups (old_chain); |
ed0616c6 VP |
7488 | return expanded; |
7489 | } | |
7490 | ||
7491 | if (!sal.explicit_line) | |
7492 | { | |
7493 | CORE_ADDR func_addr, func_end; | |
7494 | for (i = 0; i < expanded.nelts; ++i) | |
7495 | { | |
7496 | CORE_ADDR pc = expanded.sals[i].pc; | |
7497 | char *this_function; | |
6c95b8df PA |
7498 | |
7499 | /* We need to switch threads as well since we're about to | |
7500 | read memory. */ | |
7501 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7502 | ||
ed0616c6 VP |
7503 | if (find_pc_partial_function (pc, &this_function, |
7504 | &func_addr, &func_end)) | |
7505 | { | |
059fb39f PM |
7506 | if (this_function |
7507 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7508 | { |
7509 | remove_sal (&expanded, i); | |
7510 | --i; | |
7511 | } | |
ed0616c6 VP |
7512 | } |
7513 | } | |
7514 | } | |
059acae7 UW |
7515 | |
7516 | /* Skip the function prologue if necessary. */ | |
7517 | for (i = 0; i < expanded.nelts; ++i) | |
7518 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7519 | |
6c95b8df PA |
7520 | do_cleanups (old_chain); |
7521 | ||
ed0616c6 VP |
7522 | if (expanded.nelts <= 1) |
7523 | { | |
e5dd4106 | 7524 | /* This is an ugly workaround. If we get zero expanded sals |
4a64f543 MS |
7525 | then something is really wrong. Fix that by returning the |
7526 | original sal. */ | |
7527 | ||
ed0616c6 VP |
7528 | xfree (expanded.sals); |
7529 | expanded.nelts = 1; | |
7530 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7531 | sal.pc = original_pc; | |
7532 | expanded.sals[0] = sal; | |
7533 | return expanded; | |
7534 | } | |
7535 | ||
7536 | if (original_pc) | |
7537 | { | |
7538 | found = 0; | |
7539 | for (i = 0; i < expanded.nelts; ++i) | |
7540 | if (expanded.sals[i].pc == original_pc) | |
7541 | { | |
7542 | found = 1; | |
7543 | break; | |
7544 | } | |
7545 | gdb_assert (found); | |
7546 | } | |
7547 | ||
7548 | return expanded; | |
7549 | } | |
7550 | ||
018d34a4 VP |
7551 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7552 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7553 | value. COND_STRING, if not NULL, specified the condition to be | |
7554 | used for all breakpoints. Essentially the only case where | |
7555 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7556 | function. In that case, it's still not possible to specify | |
7557 | separate conditions for different overloaded functions, so | |
7558 | we take just a single condition string. | |
7559 | ||
c3f6f71d | 7560 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7561 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7562 | array contents). If the function fails (error() is called), the |
7563 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7564 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7565 | |
7566 | static void | |
8cdf0e15 | 7567 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 TT |
7568 | struct symtabs_and_lines sals, |
7569 | struct linespec_result *canonical, | |
8cdf0e15 VP |
7570 | char *cond_string, |
7571 | enum bptype type, enum bpdisp disposition, | |
7572 | int thread, int task, int ignore_count, | |
c0a91b2b | 7573 | const struct breakpoint_ops *ops, int from_tty, |
84f4c1fe | 7574 | int enabled, int internal) |
c906108c | 7575 | { |
018d34a4 | 7576 | int i; |
cc59ec59 | 7577 | |
018d34a4 | 7578 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7579 | { |
ed0616c6 VP |
7580 | struct symtabs_and_lines expanded = |
7581 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7582 | |
7efd8fc2 | 7583 | create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i], |
8cdf0e15 | 7584 | cond_string, type, disposition, |
84f4c1fe | 7585 | thread, task, ignore_count, ops, |
56435ebe TT |
7586 | from_tty, enabled, internal, |
7587 | canonical->special_display); | |
c3f6f71d | 7588 | } |
c3f6f71d | 7589 | } |
c906108c | 7590 | |
9998af43 | 7591 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7592 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7593 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7594 | address strings. ADDRESS points to the end of the SAL. |
7595 | ||
7596 | The array and the line spec strings are allocated on the heap, it is | |
7597 | the caller's responsibility to free them. */ | |
c906108c | 7598 | |
b9362cc7 | 7599 | static void |
c3f6f71d JM |
7600 | parse_breakpoint_sals (char **address, |
7601 | struct symtabs_and_lines *sals, | |
58438ac1 | 7602 | struct linespec_result *canonical) |
c3f6f71d JM |
7603 | { |
7604 | char *addr_start = *address; | |
cc59ec59 | 7605 | |
c3f6f71d | 7606 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7607 | breakpoint. */ |
c3f6f71d JM |
7608 | if ((*address) == NULL |
7609 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 7610 | { |
1bfeeb0f JL |
7611 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
7612 | address. */ | |
7613 | if (last_displayed_sal_is_valid ()) | |
c906108c | 7614 | { |
c3f6f71d | 7615 | struct symtab_and_line sal; |
cc59ec59 | 7616 | |
4a64f543 | 7617 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7618 | sals->sals = (struct symtab_and_line *) |
c906108c | 7619 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
7620 | |
7621 | /* Set sal's pspace, pc, symtab, and line to the values | |
7622 | corresponding to the last call to print_frame_info. */ | |
7623 | get_last_displayed_sal (&sal); | |
7624 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 7625 | |
4a64f543 | 7626 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
7627 | where PC is the last displayed codepoint's address. So |
7628 | make sure to set sal.explicit_pc to prevent GDB from | |
7629 | trying to expand the list of sals to include all other | |
7630 | instances with the same symtab and line. */ | |
00903456 JK |
7631 | sal.explicit_pc = 1; |
7632 | ||
c3f6f71d JM |
7633 | sals->sals[0] = sal; |
7634 | sals->nelts = 1; | |
c906108c SS |
7635 | } |
7636 | else | |
8a3fe4f8 | 7637 | error (_("No default breakpoint address now.")); |
c906108c SS |
7638 | } |
7639 | else | |
7640 | { | |
c906108c | 7641 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7642 | current_source_symtab (which is decode_line_1's default). |
7643 | This should produce the results we want almost all of the | |
1bfeeb0f JL |
7644 | time while leaving the last displayed codepoint pointers |
7645 | alone. | |
4a64f543 | 7646 | |
1aeae86e AF |
7647 | ObjC: However, don't match an Objective-C method name which |
7648 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7649 | |
c214a6fd | 7650 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7651 | |
1bfeeb0f | 7652 | if (last_displayed_sal_is_valid () |
0378c332 | 7653 | && (!cursal.symtab |
1aeae86e AF |
7654 | || ((strchr ("+-", (*address)[0]) != NULL) |
7655 | && ((*address)[1] != '[')))) | |
1bfeeb0f JL |
7656 | *sals = decode_line_1 (address, 1, |
7657 | get_last_displayed_symtab (), | |
7658 | get_last_displayed_line (), | |
7659 | canonical); | |
c906108c | 7660 | else |
0101ce28 | 7661 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
58438ac1 | 7662 | canonical); |
c906108c | 7663 | } |
4a64f543 | 7664 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7efd8fc2 | 7665 | if (sals->nelts > 0 && canonical->canonical == NULL) |
38a714bb | 7666 | canonical->canonical = xcalloc (sals->nelts, sizeof (char *)); |
c3f6f71d | 7667 | if (addr_start != (*address)) |
c906108c | 7668 | { |
c3f6f71d | 7669 | int i; |
cc59ec59 | 7670 | |
c3f6f71d | 7671 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7672 | { |
4a64f543 | 7673 | /* Add the string if not present. */ |
7efd8fc2 TT |
7674 | if (canonical->canonical[i] == NULL) |
7675 | canonical->canonical[i] = savestring (addr_start, | |
7676 | (*address) - addr_start); | |
c906108c SS |
7677 | } |
7678 | } | |
c3f6f71d | 7679 | } |
c906108c | 7680 | |
c906108c | 7681 | |
c3f6f71d | 7682 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7683 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7684 | |
b9362cc7 | 7685 | static void |
23e7acfb | 7686 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7687 | { |
7688 | int i; | |
cc59ec59 | 7689 | |
c3f6f71d | 7690 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7691 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7692 | } |
7693 | ||
7a697b8d SS |
7694 | /* Fast tracepoints may have restrictions on valid locations. For |
7695 | instance, a fast tracepoint using a jump instead of a trap will | |
7696 | likely have to overwrite more bytes than a trap would, and so can | |
7697 | only be placed where the instruction is longer than the jump, or a | |
7698 | multi-instruction sequence does not have a jump into the middle of | |
7699 | it, etc. */ | |
7700 | ||
7701 | static void | |
7702 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7703 | struct symtabs_and_lines *sals) | |
7704 | { | |
7705 | int i, rslt; | |
7706 | struct symtab_and_line *sal; | |
7707 | char *msg; | |
7708 | struct cleanup *old_chain; | |
7709 | ||
7710 | for (i = 0; i < sals->nelts; i++) | |
7711 | { | |
7712 | sal = &sals->sals[i]; | |
7713 | ||
7714 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7715 | NULL, &msg); | |
7716 | old_chain = make_cleanup (xfree, msg); | |
7717 | ||
7718 | if (!rslt) | |
7719 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7720 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7721 | ||
7722 | do_cleanups (old_chain); | |
7723 | } | |
7724 | } | |
7725 | ||
018d34a4 VP |
7726 | /* Given TOK, a string specification of condition and thread, as |
7727 | accepted by the 'break' command, extract the condition | |
7728 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7729 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7730 | If no condition is found, *COND_STRING is set to NULL. |
7731 | If no thread is found, *THREAD is set to -1. */ | |
7732 | static void | |
7733 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7734 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7735 | { |
7736 | *cond_string = NULL; | |
7737 | *thread = -1; | |
7738 | while (tok && *tok) | |
7739 | { | |
7740 | char *end_tok; | |
7741 | int toklen; | |
7742 | char *cond_start = NULL; | |
7743 | char *cond_end = NULL; | |
cc59ec59 | 7744 | |
e9cafbcc | 7745 | tok = skip_spaces (tok); |
018d34a4 | 7746 | |
e9cafbcc | 7747 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7748 | |
7749 | toklen = end_tok - tok; | |
7750 | ||
7751 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7752 | { | |
f7545552 TT |
7753 | struct expression *expr; |
7754 | ||
018d34a4 | 7755 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7756 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7757 | xfree (expr); | |
018d34a4 VP |
7758 | cond_end = tok; |
7759 | *cond_string = savestring (cond_start, | |
7760 | cond_end - cond_start); | |
7761 | } | |
7762 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7763 | { | |
7764 | char *tmptok; | |
7765 | ||
7766 | tok = end_tok + 1; | |
7767 | tmptok = tok; | |
7768 | *thread = strtol (tok, &tok, 0); | |
7769 | if (tok == tmptok) | |
7770 | error (_("Junk after thread keyword.")); | |
7771 | if (!valid_thread_id (*thread)) | |
7772 | error (_("Unknown thread %d."), *thread); | |
7773 | } | |
4a306c9a JB |
7774 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7775 | { | |
7776 | char *tmptok; | |
7777 | ||
7778 | tok = end_tok + 1; | |
7779 | tmptok = tok; | |
7780 | *task = strtol (tok, &tok, 0); | |
7781 | if (tok == tmptok) | |
7782 | error (_("Junk after task keyword.")); | |
7783 | if (!valid_task_id (*task)) | |
b6199126 | 7784 | error (_("Unknown task %d."), *task); |
4a306c9a | 7785 | } |
018d34a4 VP |
7786 | else |
7787 | error (_("Junk at end of arguments.")); | |
7788 | } | |
7789 | } | |
7790 | ||
0fb4aa4b PA |
7791 | /* Decode a static tracepoint marker spec. */ |
7792 | ||
7793 | static struct symtabs_and_lines | |
7794 | decode_static_tracepoint_spec (char **arg_p) | |
7795 | { | |
7796 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7797 | struct symtabs_and_lines sals; | |
7798 | struct symtab_and_line sal; | |
7799 | struct symbol *sym; | |
7800 | struct cleanup *old_chain; | |
7801 | char *p = &(*arg_p)[3]; | |
7802 | char *endp; | |
7803 | char *marker_str; | |
7804 | int i; | |
7805 | ||
e9cafbcc | 7806 | p = skip_spaces (p); |
0fb4aa4b | 7807 | |
e9cafbcc | 7808 | endp = skip_to_space (p); |
0fb4aa4b PA |
7809 | |
7810 | marker_str = savestring (p, endp - p); | |
7811 | old_chain = make_cleanup (xfree, marker_str); | |
7812 | ||
7813 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7814 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7815 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7816 | ||
7817 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7818 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7819 | ||
7820 | for (i = 0; i < sals.nelts; i++) | |
7821 | { | |
7822 | struct static_tracepoint_marker *marker; | |
7823 | ||
7824 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7825 | ||
7826 | init_sal (&sals.sals[i]); | |
7827 | ||
7828 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7829 | sals.sals[i].pc = marker->address; | |
7830 | ||
7831 | release_static_tracepoint_marker (marker); | |
7832 | } | |
7833 | ||
7834 | do_cleanups (old_chain); | |
7835 | ||
7836 | *arg_p = endp; | |
7837 | return sals; | |
7838 | } | |
7839 | ||
fd9b8c24 PA |
7840 | /* Set a breakpoint. This function is shared between CLI and MI |
7841 | functions for setting a breakpoint. This function has two major | |
7842 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7843 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7844 | breakpoint location, address and thread. Otherwise, ARG is just |
7845 | the location of breakpoint, with condition and thread specified by | |
7846 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7847 | the breakpoint number will be allocated from the internal | |
7848 | breakpoint count. Returns true if any breakpoint was created; | |
7849 | false otherwise. */ | |
0101ce28 | 7850 | |
8cdf0e15 VP |
7851 | int |
7852 | create_breakpoint (struct gdbarch *gdbarch, | |
7853 | char *arg, char *cond_string, int thread, | |
7854 | int parse_condition_and_thread, | |
0fb4aa4b | 7855 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7856 | int ignore_count, |
7857 | enum auto_boolean pending_break_support, | |
c0a91b2b | 7858 | const struct breakpoint_ops *ops, |
84f4c1fe | 7859 | int from_tty, int enabled, int internal) |
c3f6f71d | 7860 | { |
b78a6381 | 7861 | volatile struct gdb_exception e; |
c3f6f71d | 7862 | struct symtabs_and_lines sals; |
0101ce28 | 7863 | struct symtab_and_line pending_sal; |
0101ce28 | 7864 | char *copy_arg; |
c3f6f71d | 7865 | char *addr_start = arg; |
7efd8fc2 | 7866 | struct linespec_result canonical; |
c3f6f71d | 7867 | struct cleanup *old_chain; |
80c99de1 | 7868 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7869 | int i; |
0101ce28 | 7870 | int pending = 0; |
4a306c9a | 7871 | int task = 0; |
86b17b60 | 7872 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7873 | |
348d480f PA |
7874 | gdb_assert (ops != NULL); |
7875 | ||
c3f6f71d JM |
7876 | sals.sals = NULL; |
7877 | sals.nelts = 0; | |
7efd8fc2 | 7878 | init_linespec_result (&canonical); |
c3f6f71d | 7879 | |
0fb4aa4b PA |
7880 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7881 | { | |
7882 | int i; | |
7883 | ||
7884 | sals = decode_static_tracepoint_spec (&arg); | |
7885 | ||
7886 | copy_arg = savestring (addr_start, arg - addr_start); | |
38a714bb | 7887 | canonical.canonical = xcalloc (sals.nelts, sizeof (char *)); |
0fb4aa4b | 7888 | for (i = 0; i < sals.nelts; i++) |
7efd8fc2 | 7889 | canonical.canonical[i] = xstrdup (copy_arg); |
0fb4aa4b PA |
7890 | goto done; |
7891 | } | |
7892 | ||
b78a6381 TT |
7893 | TRY_CATCH (e, RETURN_MASK_ALL) |
7894 | { | |
58438ac1 | 7895 | parse_breakpoint_sals (&arg, &sals, &canonical); |
b78a6381 | 7896 | } |
0101ce28 JJ |
7897 | |
7898 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7899 | switch (e.reason) |
0101ce28 | 7900 | { |
05ff989b | 7901 | case RETURN_QUIT: |
98deb0da | 7902 | throw_exception (e); |
05ff989b AC |
7903 | case RETURN_ERROR: |
7904 | switch (e.error) | |
0101ce28 | 7905 | { |
05ff989b | 7906 | case NOT_FOUND_ERROR: |
0101ce28 | 7907 | |
05ff989b AC |
7908 | /* If pending breakpoint support is turned off, throw |
7909 | error. */ | |
fa8d40ab JJ |
7910 | |
7911 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7912 | throw_exception (e); |
7913 | ||
7914 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7915 | |
05ff989b AC |
7916 | /* If pending breakpoint support is auto query and the user |
7917 | selects no, then simply return the error code. */ | |
059fb39f | 7918 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
7919 | && !nquery (_("Make %s pending on future shared library load? "), |
7920 | bptype_string (type_wanted))) | |
fd9b8c24 | 7921 | return 0; |
fa8d40ab | 7922 | |
05ff989b AC |
7923 | /* At this point, either the user was queried about setting |
7924 | a pending breakpoint and selected yes, or pending | |
7925 | breakpoint behavior is on and thus a pending breakpoint | |
7926 | is defaulted on behalf of the user. */ | |
0101ce28 | 7927 | copy_arg = xstrdup (addr_start); |
7efd8fc2 | 7928 | canonical.canonical = ©_arg; |
0101ce28 JJ |
7929 | sals.nelts = 1; |
7930 | sals.sals = &pending_sal; | |
7931 | pending_sal.pc = 0; | |
7932 | pending = 1; | |
05ff989b AC |
7933 | break; |
7934 | default: | |
98deb0da | 7935 | throw_exception (e); |
0101ce28 | 7936 | } |
2abae994 | 7937 | break; |
05ff989b AC |
7938 | default: |
7939 | if (!sals.nelts) | |
fd9b8c24 | 7940 | return 0; |
0101ce28 | 7941 | } |
c3f6f71d | 7942 | |
0fb4aa4b PA |
7943 | done: |
7944 | ||
4a64f543 | 7945 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7946 | old_chain = make_cleanup (null_cleanup, 0); |
7947 | ||
0101ce28 JJ |
7948 | if (!pending) |
7949 | { | |
7950 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7951 | make_cleanup (xfree, sals.sals); | |
7952 | ||
7efd8fc2 TT |
7953 | /* Cleanup the canonical array but not its contents. */ |
7954 | make_cleanup (xfree, canonical.canonical); | |
0101ce28 | 7955 | } |
c3f6f71d | 7956 | |
c3f6f71d JM |
7957 | /* ----------------------------- SNIP ----------------------------- |
7958 | Anything added to the cleanup chain beyond this point is assumed | |
7959 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7960 | then the memory is not reclaimed. */ |
7961 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 7962 | |
7efd8fc2 | 7963 | /* Mark the contents of the canonical for cleanup. These go on |
80c99de1 | 7964 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7965 | for (i = 0; i < sals.nelts; i++) |
7966 | { | |
7efd8fc2 TT |
7967 | if (canonical.canonical[i] != NULL) |
7968 | make_cleanup (xfree, canonical.canonical[i]); | |
c3f6f71d JM |
7969 | } |
7970 | ||
7971 | /* Resolve all line numbers to PC's and verify that the addresses | |
7972 | are ok for the target. */ | |
0101ce28 | 7973 | if (!pending) |
23e7acfb | 7974 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7975 | |
7a697b8d | 7976 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 7977 | if (!pending && type_wanted == bp_fast_tracepoint) |
7a697b8d SS |
7978 | check_fast_tracepoint_sals (gdbarch, &sals); |
7979 | ||
c3f6f71d JM |
7980 | /* Verify that condition can be parsed, before setting any |
7981 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7982 | breakpoint. */ |
0101ce28 | 7983 | if (!pending) |
c3f6f71d | 7984 | { |
2f069f6f | 7985 | if (parse_condition_and_thread) |
72b2ff0e VP |
7986 | { |
7987 | /* Here we only parse 'arg' to separate condition | |
7988 | from thread number, so parsing in context of first | |
7989 | sal is OK. When setting the breakpoint we'll | |
7990 | re-parse it in context of each sal. */ | |
7991 | cond_string = NULL; | |
7992 | thread = -1; | |
4a306c9a JB |
7993 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7994 | &thread, &task); | |
72b2ff0e VP |
7995 | if (cond_string) |
7996 | make_cleanup (xfree, cond_string); | |
7997 | } | |
2f069f6f | 7998 | else |
72b2ff0e VP |
7999 | { |
8000 | /* Create a private copy of condition string. */ | |
8001 | if (cond_string) | |
8002 | { | |
8003 | cond_string = xstrdup (cond_string); | |
8004 | make_cleanup (xfree, cond_string); | |
8005 | } | |
8006 | } | |
0fb4aa4b PA |
8007 | |
8008 | /* If the user is creating a static tracepoint by marker id | |
8009 | (strace -m MARKER_ID), then store the sals index, so that | |
8010 | breakpoint_re_set can try to match up which of the newly | |
8011 | found markers corresponds to this one, and, don't try to | |
8012 | expand multiple locations for each sal, given than SALS | |
8013 | already should contain all sals for MARKER_ID. */ | |
8014 | if (type_wanted == bp_static_tracepoint | |
7efd8fc2 | 8015 | && is_marker_spec (canonical.canonical[0])) |
0fb4aa4b PA |
8016 | { |
8017 | int i; | |
8018 | ||
8019 | for (i = 0; i < sals.nelts; ++i) | |
8020 | { | |
8021 | struct symtabs_and_lines expanded; | |
d9b3f62e | 8022 | struct tracepoint *tp; |
0fb4aa4b PA |
8023 | struct cleanup *old_chain; |
8024 | ||
8025 | expanded.nelts = 1; | |
8026 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
8027 | expanded.sals[0] = sals.sals[i]; | |
8028 | old_chain = make_cleanup (xfree, expanded.sals); | |
8029 | ||
d9b3f62e PA |
8030 | tp = XCNEW (struct tracepoint); |
8031 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
8032 | canonical.canonical[i], | |
8033 | cond_string, type_wanted, | |
8034 | tempflag ? disp_del : disp_donttouch, | |
8035 | thread, task, ignore_count, ops, | |
8036 | from_tty, enabled, internal, | |
8037 | canonical.special_display); | |
0fb4aa4b PA |
8038 | /* Given that its possible to have multiple markers with |
8039 | the same string id, if the user is creating a static | |
8040 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
8041 | store the sals index, so that breakpoint_re_set can | |
8042 | try to match up which of the newly found markers | |
8043 | corresponds to this one */ | |
8044 | tp->static_trace_marker_id_idx = i; | |
d9b3f62e | 8045 | |
3ea46bff | 8046 | install_breakpoint (internal, &tp->base, 0); |
d9b3f62e PA |
8047 | |
8048 | do_cleanups (old_chain); | |
0fb4aa4b PA |
8049 | } |
8050 | } | |
8051 | else | |
7efd8fc2 | 8052 | create_breakpoints_sal (gdbarch, sals, &canonical, cond_string, |
3e43a32a MS |
8053 | type_wanted, |
8054 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 8055 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 8056 | enabled, internal); |
c906108c | 8057 | } |
0101ce28 JJ |
8058 | else |
8059 | { | |
0101ce28 JJ |
8060 | struct breakpoint *b; |
8061 | ||
0101ce28 JJ |
8062 | make_cleanup (xfree, copy_arg); |
8063 | ||
bfccc43c YQ |
8064 | if (is_tracepoint_type (type_wanted)) |
8065 | { | |
8066 | struct tracepoint *t; | |
8067 | ||
8068 | t = XCNEW (struct tracepoint); | |
8069 | b = &t->base; | |
8070 | } | |
8071 | else | |
8072 | b = XNEW (struct breakpoint); | |
8073 | ||
8074 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
8075 | ||
7efd8fc2 | 8076 | b->addr_string = canonical.canonical[0]; |
72b2ff0e | 8077 | b->cond_string = NULL; |
0101ce28 | 8078 | b->ignore_count = ignore_count; |
0101ce28 | 8079 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8080 | b->condition_not_parsed = 1; |
41447f92 | 8081 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 8082 | b->pspace = current_program_space; |
74960c60 | 8083 | |
6c95b8df | 8084 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
8085 | && (b->type == bp_breakpoint |
8086 | || b->type == bp_hardware_breakpoint)) | |
8087 | b->enable_state = bp_startup_disabled; | |
8088 | ||
bfccc43c | 8089 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
8090 | } |
8091 | ||
c3f6f71d | 8092 | if (sals.nelts > 1) |
95a42b64 | 8093 | { |
3e43a32a MS |
8094 | warning (_("Multiple breakpoints were set.\nUse the " |
8095 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8096 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8097 | } |
8098 | ||
80c99de1 PA |
8099 | /* That's it. Discard the cleanups for data inserted into the |
8100 | breakpoint. */ | |
8101 | discard_cleanups (bkpt_chain); | |
8102 | /* But cleanup everything else. */ | |
c3f6f71d | 8103 | do_cleanups (old_chain); |
217dc9e2 | 8104 | |
80c99de1 | 8105 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 8106 | update_global_location_list (1); |
fd9b8c24 PA |
8107 | |
8108 | return 1; | |
c3f6f71d | 8109 | } |
c906108c | 8110 | |
348d480f | 8111 | /* Set a breakpoint. |
72b2ff0e VP |
8112 | ARG is a string describing breakpoint address, |
8113 | condition, and thread. | |
8114 | FLAG specifies if a breakpoint is hardware on, | |
8115 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8116 | and BP_TEMPFLAG. */ | |
348d480f | 8117 | |
98deb0da | 8118 | static void |
72b2ff0e | 8119 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 8120 | { |
72b2ff0e | 8121 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8122 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8123 | ? bp_hardware_breakpoint | |
8124 | : bp_breakpoint); | |
c3f6f71d | 8125 | |
8cdf0e15 VP |
8126 | create_breakpoint (get_current_arch (), |
8127 | arg, | |
8128 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 8129 | tempflag, type_wanted, |
8cdf0e15 VP |
8130 | 0 /* Ignore count */, |
8131 | pending_break_support, | |
348d480f | 8132 | &bkpt_breakpoint_ops, |
8cdf0e15 | 8133 | from_tty, |
84f4c1fe PM |
8134 | 1 /* enabled */, |
8135 | 0 /* internal */); | |
c906108c SS |
8136 | } |
8137 | ||
c906108c SS |
8138 | /* Helper function for break_command_1 and disassemble_command. */ |
8139 | ||
8140 | void | |
fba45db2 | 8141 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8142 | { |
8143 | CORE_ADDR pc; | |
8144 | ||
8145 | if (sal->pc == 0 && sal->symtab != NULL) | |
8146 | { | |
8147 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 8148 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
8149 | sal->line, sal->symtab->filename); |
8150 | sal->pc = pc; | |
6a048695 | 8151 | |
4a64f543 MS |
8152 | /* If this SAL corresponds to a breakpoint inserted using a line |
8153 | number, then skip the function prologue if necessary. */ | |
6a048695 | 8154 | if (sal->explicit_line) |
059acae7 | 8155 | skip_prologue_sal (sal); |
c906108c SS |
8156 | } |
8157 | ||
8158 | if (sal->section == 0 && sal->symtab != NULL) | |
8159 | { | |
8160 | struct blockvector *bv; | |
c5aa993b JM |
8161 | struct block *b; |
8162 | struct symbol *sym; | |
c906108c | 8163 | |
801e3a5b | 8164 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
8165 | if (bv != NULL) |
8166 | { | |
7f0df278 | 8167 | sym = block_linkage_function (b); |
c906108c SS |
8168 | if (sym != NULL) |
8169 | { | |
8170 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 8171 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
8172 | } |
8173 | else | |
8174 | { | |
4a64f543 MS |
8175 | /* It really is worthwhile to have the section, so we'll |
8176 | just have to look harder. This case can be executed | |
8177 | if we have line numbers but no functions (as can | |
8178 | happen in assembly source). */ | |
c906108c | 8179 | |
c5aa993b | 8180 | struct minimal_symbol *msym; |
6c95b8df PA |
8181 | struct cleanup *old_chain = save_current_space_and_thread (); |
8182 | ||
8183 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8184 | |
8185 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8186 | if (msym) | |
714835d5 | 8187 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8188 | |
8189 | do_cleanups (old_chain); | |
c906108c SS |
8190 | } |
8191 | } | |
8192 | } | |
8193 | } | |
8194 | ||
8195 | void | |
fba45db2 | 8196 | break_command (char *arg, int from_tty) |
c906108c | 8197 | { |
db107f19 | 8198 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8199 | } |
8200 | ||
c906108c | 8201 | void |
fba45db2 | 8202 | tbreak_command (char *arg, int from_tty) |
c906108c | 8203 | { |
db107f19 | 8204 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8205 | } |
8206 | ||
c906108c | 8207 | static void |
fba45db2 | 8208 | hbreak_command (char *arg, int from_tty) |
c906108c | 8209 | { |
db107f19 | 8210 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8211 | } |
8212 | ||
8213 | static void | |
fba45db2 | 8214 | thbreak_command (char *arg, int from_tty) |
c906108c | 8215 | { |
db107f19 | 8216 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8217 | } |
8218 | ||
8219 | static void | |
fba45db2 | 8220 | stop_command (char *arg, int from_tty) |
c906108c | 8221 | { |
a3f17187 | 8222 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8223 | Usage: stop in <function | address>\n\ |
a3f17187 | 8224 | stop at <line>\n")); |
c906108c SS |
8225 | } |
8226 | ||
8227 | static void | |
fba45db2 | 8228 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8229 | { |
8230 | int badInput = 0; | |
8231 | ||
c5aa993b | 8232 | if (arg == (char *) NULL) |
c906108c SS |
8233 | badInput = 1; |
8234 | else if (*arg != '*') | |
8235 | { | |
8236 | char *argptr = arg; | |
8237 | int hasColon = 0; | |
8238 | ||
4a64f543 | 8239 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8240 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8241 | function/method name. */ |
c906108c | 8242 | while (*argptr && !hasColon) |
c5aa993b JM |
8243 | { |
8244 | hasColon = (*argptr == ':'); | |
8245 | argptr++; | |
8246 | } | |
c906108c SS |
8247 | |
8248 | if (hasColon) | |
c5aa993b | 8249 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8250 | else |
c5aa993b | 8251 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8252 | } |
8253 | ||
8254 | if (badInput) | |
a3f17187 | 8255 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8256 | else |
db107f19 | 8257 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8258 | } |
8259 | ||
8260 | static void | |
fba45db2 | 8261 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8262 | { |
8263 | int badInput = 0; | |
8264 | ||
c5aa993b | 8265 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8266 | badInput = 1; |
8267 | else | |
8268 | { | |
8269 | char *argptr = arg; | |
8270 | int hasColon = 0; | |
8271 | ||
4a64f543 MS |
8272 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8273 | it is probably a line number. */ | |
c906108c | 8274 | while (*argptr && !hasColon) |
c5aa993b JM |
8275 | { |
8276 | hasColon = (*argptr == ':'); | |
8277 | argptr++; | |
8278 | } | |
c906108c SS |
8279 | |
8280 | if (hasColon) | |
c5aa993b | 8281 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8282 | else |
c5aa993b | 8283 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8284 | } |
8285 | ||
8286 | if (badInput) | |
a3f17187 | 8287 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8288 | else |
db107f19 | 8289 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8290 | } |
8291 | ||
f1310107 TJB |
8292 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
8293 | ranged breakpoints. */ | |
8294 | ||
8295 | static int | |
8296 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
8297 | struct address_space *aspace, | |
8298 | CORE_ADDR bp_addr) | |
8299 | { | |
8300 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, | |
8301 | bl->length, aspace, bp_addr); | |
8302 | } | |
8303 | ||
8304 | /* Implement the "resources_needed" breakpoint_ops method for | |
8305 | ranged breakpoints. */ | |
8306 | ||
8307 | static int | |
8308 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
8309 | { | |
8310 | return target_ranged_break_num_registers (); | |
8311 | } | |
8312 | ||
8313 | /* Implement the "print_it" breakpoint_ops method for | |
8314 | ranged breakpoints. */ | |
8315 | ||
8316 | static enum print_stop_action | |
348d480f | 8317 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 8318 | { |
348d480f | 8319 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 8320 | struct bp_location *bl = b->loc; |
79a45e25 | 8321 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8322 | |
8323 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8324 | ||
8325 | /* Ranged breakpoints have only one location. */ | |
8326 | gdb_assert (bl && bl->next == NULL); | |
8327 | ||
8328 | annotate_breakpoint (b->number); | |
8329 | if (b->disposition == disp_del) | |
8330 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
8331 | else | |
8332 | ui_out_text (uiout, "\nRanged breakpoint "); | |
8333 | if (ui_out_is_mi_like_p (uiout)) | |
8334 | { | |
8335 | ui_out_field_string (uiout, "reason", | |
8336 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8337 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8338 | } | |
8339 | ui_out_field_int (uiout, "bkptno", b->number); | |
8340 | ui_out_text (uiout, ", "); | |
8341 | ||
8342 | return PRINT_SRC_AND_LOC; | |
8343 | } | |
8344 | ||
8345 | /* Implement the "print_one" breakpoint_ops method for | |
8346 | ranged breakpoints. */ | |
8347 | ||
8348 | static void | |
8349 | print_one_ranged_breakpoint (struct breakpoint *b, | |
8350 | struct bp_location **last_loc) | |
8351 | { | |
8352 | struct bp_location *bl = b->loc; | |
8353 | struct value_print_options opts; | |
79a45e25 | 8354 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8355 | |
8356 | /* Ranged breakpoints have only one location. */ | |
8357 | gdb_assert (bl && bl->next == NULL); | |
8358 | ||
8359 | get_user_print_options (&opts); | |
8360 | ||
8361 | if (opts.addressprint) | |
8362 | /* We don't print the address range here, it will be printed later | |
8363 | by print_one_detail_ranged_breakpoint. */ | |
8364 | ui_out_field_skip (uiout, "addr"); | |
8365 | annotate_field (5); | |
8366 | print_breakpoint_location (b, bl); | |
8367 | *last_loc = bl; | |
8368 | } | |
8369 | ||
8370 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8371 | ranged breakpoints. */ | |
8372 | ||
8373 | static void | |
8374 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
8375 | struct ui_out *uiout) | |
8376 | { | |
8377 | CORE_ADDR address_start, address_end; | |
8378 | struct bp_location *bl = b->loc; | |
8379 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
8380 | struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb); | |
8381 | ||
8382 | gdb_assert (bl); | |
8383 | ||
8384 | address_start = bl->address; | |
8385 | address_end = address_start + bl->length - 1; | |
8386 | ||
8387 | ui_out_text (uiout, "\taddress range: "); | |
8388 | fprintf_unfiltered (stb->stream, "[%s, %s]", | |
8389 | print_core_address (bl->gdbarch, address_start), | |
8390 | print_core_address (bl->gdbarch, address_end)); | |
8391 | ui_out_field_stream (uiout, "addr", stb); | |
8392 | ui_out_text (uiout, "\n"); | |
8393 | ||
8394 | do_cleanups (cleanup); | |
8395 | } | |
8396 | ||
8397 | /* Implement the "print_mention" breakpoint_ops method for | |
8398 | ranged breakpoints. */ | |
8399 | ||
8400 | static void | |
8401 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
8402 | { | |
8403 | struct bp_location *bl = b->loc; | |
79a45e25 | 8404 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8405 | |
8406 | gdb_assert (bl); | |
8407 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8408 | ||
8409 | if (ui_out_is_mi_like_p (uiout)) | |
8410 | return; | |
8411 | ||
8412 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
8413 | b->number, paddress (bl->gdbarch, bl->address), | |
8414 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
8415 | } | |
8416 | ||
8417 | /* Implement the "print_recreate" breakpoint_ops method for | |
8418 | ranged breakpoints. */ | |
8419 | ||
8420 | static void | |
8421 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
8422 | { | |
8423 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
8424 | b->addr_string_range_end); | |
d9b3f62e | 8425 | print_recreate_thread (b, fp); |
f1310107 TJB |
8426 | } |
8427 | ||
8428 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
8429 | ||
2060206e | 8430 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
8431 | |
8432 | /* Find the address where the end of the breakpoint range should be | |
8433 | placed, given the SAL of the end of the range. This is so that if | |
8434 | the user provides a line number, the end of the range is set to the | |
8435 | last instruction of the given line. */ | |
8436 | ||
8437 | static CORE_ADDR | |
8438 | find_breakpoint_range_end (struct symtab_and_line sal) | |
8439 | { | |
8440 | CORE_ADDR end; | |
8441 | ||
8442 | /* If the user provided a PC value, use it. Otherwise, | |
8443 | find the address of the end of the given location. */ | |
8444 | if (sal.explicit_pc) | |
8445 | end = sal.pc; | |
8446 | else | |
8447 | { | |
8448 | int ret; | |
8449 | CORE_ADDR start; | |
8450 | ||
8451 | ret = find_line_pc_range (sal, &start, &end); | |
8452 | if (!ret) | |
8453 | error (_("Could not find location of the end of the range.")); | |
8454 | ||
8455 | /* find_line_pc_range returns the start of the next line. */ | |
8456 | end--; | |
8457 | } | |
8458 | ||
8459 | return end; | |
8460 | } | |
8461 | ||
8462 | /* Implement the "break-range" CLI command. */ | |
8463 | ||
8464 | static void | |
8465 | break_range_command (char *arg, int from_tty) | |
8466 | { | |
8467 | char *arg_start, *addr_string_start, *addr_string_end; | |
8468 | struct linespec_result canonical_start, canonical_end; | |
8469 | int bp_count, can_use_bp, length; | |
8470 | CORE_ADDR end; | |
8471 | struct breakpoint *b; | |
8472 | struct symtab_and_line sal_start, sal_end; | |
8473 | struct symtabs_and_lines sals_start, sals_end; | |
8474 | struct cleanup *cleanup_bkpt; | |
8475 | ||
8476 | /* We don't support software ranged breakpoints. */ | |
8477 | if (target_ranged_break_num_registers () < 0) | |
8478 | error (_("This target does not support hardware ranged breakpoints.")); | |
8479 | ||
8480 | bp_count = hw_breakpoint_used_count (); | |
8481 | bp_count += target_ranged_break_num_registers (); | |
8482 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
8483 | bp_count, 0); | |
8484 | if (can_use_bp < 0) | |
8485 | error (_("Hardware breakpoints used exceeds limit.")); | |
8486 | ||
8487 | if (arg == NULL || arg[0] == '\0') | |
8488 | error(_("No address range specified.")); | |
8489 | ||
8490 | sals_start.sals = NULL; | |
8491 | sals_start.nelts = 0; | |
8492 | init_linespec_result (&canonical_start); | |
8493 | ||
8494 | while (*arg == ' ' || *arg == '\t') | |
8495 | arg++; | |
8496 | ||
58438ac1 | 8497 | parse_breakpoint_sals (&arg, &sals_start, &canonical_start); |
f1310107 TJB |
8498 | |
8499 | sal_start = sals_start.sals[0]; | |
8500 | addr_string_start = canonical_start.canonical[0]; | |
8501 | cleanup_bkpt = make_cleanup (xfree, addr_string_start); | |
8502 | xfree (sals_start.sals); | |
8503 | xfree (canonical_start.canonical); | |
8504 | ||
8505 | if (arg[0] != ',') | |
8506 | error (_("Too few arguments.")); | |
8507 | else if (sals_start.nelts == 0) | |
8508 | error (_("Could not find location of the beginning of the range.")); | |
8509 | else if (sals_start.nelts != 1) | |
8510 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8511 | ||
8512 | resolve_sal_pc (&sal_start); | |
8513 | ||
8514 | arg++; /* Skip the comma. */ | |
8515 | while (*arg == ' ' || *arg == '\t') | |
8516 | arg++; | |
8517 | ||
8518 | /* Parse the end location. */ | |
8519 | ||
8520 | sals_end.sals = NULL; | |
8521 | sals_end.nelts = 0; | |
8522 | init_linespec_result (&canonical_end); | |
8523 | arg_start = arg; | |
8524 | ||
423f41a5 | 8525 | /* We call decode_line_1 directly here instead of using |
f1310107 TJB |
8526 | parse_breakpoint_sals because we need to specify the start location's |
8527 | symtab and line as the default symtab and line for the end of the | |
8528 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
8529 | where +14 means 14 lines from the start location. */ | |
8530 | sals_end = decode_line_1 (&arg, 1, sal_start.symtab, sal_start.line, | |
58438ac1 | 8531 | &canonical_end); |
f1310107 TJB |
8532 | |
8533 | /* canonical_end can be NULL if it was of the form "*0xdeadbeef". */ | |
8534 | if (canonical_end.canonical == NULL) | |
38a714bb | 8535 | canonical_end.canonical = xcalloc (1, sizeof (char *)); |
f1310107 TJB |
8536 | /* Add the string if not present. */ |
8537 | if (arg_start != arg && canonical_end.canonical[0] == NULL) | |
8538 | canonical_end.canonical[0] = savestring (arg_start, arg - arg_start); | |
8539 | ||
8540 | sal_end = sals_end.sals[0]; | |
8541 | addr_string_end = canonical_end.canonical[0]; | |
8542 | make_cleanup (xfree, addr_string_end); | |
8543 | xfree (sals_end.sals); | |
8544 | xfree (canonical_end.canonical); | |
8545 | ||
8546 | if (sals_end.nelts == 0) | |
8547 | error (_("Could not find location of the end of the range.")); | |
8548 | else if (sals_end.nelts != 1) | |
8549 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8550 | ||
8551 | resolve_sal_pc (&sal_end); | |
8552 | ||
8553 | end = find_breakpoint_range_end (sal_end); | |
8554 | if (sal_start.pc > end) | |
177b42fe | 8555 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
8556 | |
8557 | length = end - sal_start.pc + 1; | |
8558 | if (length < 0) | |
8559 | /* Length overflowed. */ | |
8560 | error (_("Address range too large.")); | |
8561 | else if (length == 1) | |
8562 | { | |
8563 | /* This range is simple enough to be handled by | |
8564 | the `hbreak' command. */ | |
8565 | hbreak_command (addr_string_start, 1); | |
8566 | ||
8567 | do_cleanups (cleanup_bkpt); | |
8568 | ||
8569 | return; | |
8570 | } | |
8571 | ||
8572 | /* Now set up the breakpoint. */ | |
8573 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 8574 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
8575 | set_breakpoint_count (breakpoint_count + 1); |
8576 | b->number = breakpoint_count; | |
8577 | b->disposition = disp_donttouch; | |
8578 | b->addr_string = addr_string_start; | |
8579 | b->addr_string_range_end = addr_string_end; | |
f1310107 TJB |
8580 | b->loc->length = length; |
8581 | ||
8582 | discard_cleanups (cleanup_bkpt); | |
8583 | ||
8584 | mention (b); | |
8d3788bd | 8585 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
8586 | update_global_location_list (1); |
8587 | } | |
8588 | ||
4a64f543 MS |
8589 | /* Return non-zero if EXP is verified as constant. Returned zero |
8590 | means EXP is variable. Also the constant detection may fail for | |
8591 | some constant expressions and in such case still falsely return | |
8592 | zero. */ | |
65d79d4b SDJ |
8593 | static int |
8594 | watchpoint_exp_is_const (const struct expression *exp) | |
8595 | { | |
8596 | int i = exp->nelts; | |
8597 | ||
8598 | while (i > 0) | |
8599 | { | |
8600 | int oplenp, argsp; | |
8601 | ||
8602 | /* We are only interested in the descriptor of each element. */ | |
8603 | operator_length (exp, i, &oplenp, &argsp); | |
8604 | i -= oplenp; | |
8605 | ||
8606 | switch (exp->elts[i].opcode) | |
8607 | { | |
8608 | case BINOP_ADD: | |
8609 | case BINOP_SUB: | |
8610 | case BINOP_MUL: | |
8611 | case BINOP_DIV: | |
8612 | case BINOP_REM: | |
8613 | case BINOP_MOD: | |
8614 | case BINOP_LSH: | |
8615 | case BINOP_RSH: | |
8616 | case BINOP_LOGICAL_AND: | |
8617 | case BINOP_LOGICAL_OR: | |
8618 | case BINOP_BITWISE_AND: | |
8619 | case BINOP_BITWISE_IOR: | |
8620 | case BINOP_BITWISE_XOR: | |
8621 | case BINOP_EQUAL: | |
8622 | case BINOP_NOTEQUAL: | |
8623 | case BINOP_LESS: | |
8624 | case BINOP_GTR: | |
8625 | case BINOP_LEQ: | |
8626 | case BINOP_GEQ: | |
8627 | case BINOP_REPEAT: | |
8628 | case BINOP_COMMA: | |
8629 | case BINOP_EXP: | |
8630 | case BINOP_MIN: | |
8631 | case BINOP_MAX: | |
8632 | case BINOP_INTDIV: | |
8633 | case BINOP_CONCAT: | |
8634 | case BINOP_IN: | |
8635 | case BINOP_RANGE: | |
8636 | case TERNOP_COND: | |
8637 | case TERNOP_SLICE: | |
8638 | case TERNOP_SLICE_COUNT: | |
8639 | ||
8640 | case OP_LONG: | |
8641 | case OP_DOUBLE: | |
8642 | case OP_DECFLOAT: | |
8643 | case OP_LAST: | |
8644 | case OP_COMPLEX: | |
8645 | case OP_STRING: | |
8646 | case OP_BITSTRING: | |
8647 | case OP_ARRAY: | |
8648 | case OP_TYPE: | |
8649 | case OP_NAME: | |
8650 | case OP_OBJC_NSSTRING: | |
8651 | ||
8652 | case UNOP_NEG: | |
8653 | case UNOP_LOGICAL_NOT: | |
8654 | case UNOP_COMPLEMENT: | |
8655 | case UNOP_ADDR: | |
8656 | case UNOP_HIGH: | |
4a64f543 MS |
8657 | /* Unary, binary and ternary operators: We have to check |
8658 | their operands. If they are constant, then so is the | |
8659 | result of that operation. For instance, if A and B are | |
8660 | determined to be constants, then so is "A + B". | |
8661 | ||
8662 | UNOP_IND is one exception to the rule above, because the | |
8663 | value of *ADDR is not necessarily a constant, even when | |
8664 | ADDR is. */ | |
65d79d4b SDJ |
8665 | break; |
8666 | ||
8667 | case OP_VAR_VALUE: | |
8668 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8669 | |
65d79d4b | 8670 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8671 | possible that a buggy compiler could mark a variable as |
8672 | constant even when it is not, and TYPE_CONST would return | |
8673 | true in this case, while SYMBOL_CLASS wouldn't. | |
8674 | ||
8675 | We also have to check for function symbols because they | |
8676 | are always constant. */ | |
65d79d4b SDJ |
8677 | { |
8678 | struct symbol *s = exp->elts[i + 2].symbol; | |
8679 | ||
8680 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8681 | && SYMBOL_CLASS (s) != LOC_CONST | |
8682 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8683 | return 0; | |
8684 | break; | |
8685 | } | |
8686 | ||
8687 | /* The default action is to return 0 because we are using | |
8688 | the optimistic approach here: If we don't know something, | |
8689 | then it is not a constant. */ | |
8690 | default: | |
8691 | return 0; | |
8692 | } | |
8693 | } | |
8694 | ||
8695 | return 1; | |
8696 | } | |
8697 | ||
3a5c3e22 PA |
8698 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
8699 | ||
8700 | static void | |
8701 | dtor_watchpoint (struct breakpoint *self) | |
8702 | { | |
8703 | struct watchpoint *w = (struct watchpoint *) self; | |
8704 | ||
8705 | xfree (w->cond_exp); | |
8706 | xfree (w->exp); | |
8707 | xfree (w->exp_string); | |
8708 | xfree (w->exp_string_reparse); | |
8709 | value_free (w->val); | |
8710 | ||
8711 | base_breakpoint_ops.dtor (self); | |
8712 | } | |
8713 | ||
348d480f PA |
8714 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
8715 | ||
8716 | static void | |
8717 | re_set_watchpoint (struct breakpoint *b) | |
8718 | { | |
3a5c3e22 PA |
8719 | struct watchpoint *w = (struct watchpoint *) b; |
8720 | ||
348d480f PA |
8721 | /* Watchpoint can be either on expression using entirely global |
8722 | variables, or it can be on local variables. | |
8723 | ||
8724 | Watchpoints of the first kind are never auto-deleted, and even | |
8725 | persist across program restarts. Since they can use variables | |
8726 | from shared libraries, we need to reparse expression as libraries | |
8727 | are loaded and unloaded. | |
8728 | ||
8729 | Watchpoints on local variables can also change meaning as result | |
8730 | of solib event. For example, if a watchpoint uses both a local | |
8731 | and a global variables in expression, it's a local watchpoint, | |
8732 | but unloading of a shared library will make the expression | |
8733 | invalid. This is not a very common use case, but we still | |
8734 | re-evaluate expression, to avoid surprises to the user. | |
8735 | ||
8736 | Note that for local watchpoints, we re-evaluate it only if | |
8737 | watchpoints frame id is still valid. If it's not, it means the | |
8738 | watchpoint is out of scope and will be deleted soon. In fact, | |
8739 | I'm not sure we'll ever be called in this case. | |
8740 | ||
8741 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 8742 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 8743 | |
3a5c3e22 PA |
8744 | Don't do anything about disabled watchpoints, since they will be |
8745 | reevaluated again when enabled. */ | |
8746 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
8747 | } |
8748 | ||
77b06cd7 TJB |
8749 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8750 | ||
8751 | static int | |
8752 | insert_watchpoint (struct bp_location *bl) | |
8753 | { | |
3a5c3e22 PA |
8754 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8755 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8756 | |
8757 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8758 | w->cond_exp); |
77b06cd7 TJB |
8759 | } |
8760 | ||
8761 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8762 | ||
8763 | static int | |
8764 | remove_watchpoint (struct bp_location *bl) | |
8765 | { | |
3a5c3e22 PA |
8766 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8767 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8768 | |
8769 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8770 | w->cond_exp); |
e09342b5 TJB |
8771 | } |
8772 | ||
e09342b5 | 8773 | static int |
348d480f PA |
8774 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
8775 | struct address_space *aspace, CORE_ADDR bp_addr) | |
e09342b5 | 8776 | { |
348d480f | 8777 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 8778 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 8779 | |
348d480f PA |
8780 | /* Continuable hardware watchpoints are treated as non-existent if the |
8781 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
8782 | some data address). Otherwise gdb won't stop on a break instruction | |
8783 | in the code (not from a breakpoint) when a hardware watchpoint has | |
8784 | been defined. Also skip watchpoints which we know did not trigger | |
8785 | (did not match the data address). */ | |
8786 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 8787 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 8788 | return 0; |
9c06b0b4 | 8789 | |
348d480f | 8790 | return 1; |
9c06b0b4 TJB |
8791 | } |
8792 | ||
348d480f PA |
8793 | static void |
8794 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 8795 | { |
348d480f | 8796 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 8797 | |
348d480f | 8798 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
8799 | } |
8800 | ||
8801 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 8802 | hardware watchpoints. */ |
9c06b0b4 TJB |
8803 | |
8804 | static int | |
348d480f | 8805 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 8806 | { |
3a5c3e22 PA |
8807 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8808 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
8809 | |
8810 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
8811 | } |
8812 | ||
8813 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 8814 | hardware watchpoints. */ |
9c06b0b4 TJB |
8815 | |
8816 | static int | |
348d480f | 8817 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 8818 | { |
efa80663 PA |
8819 | /* Read and access watchpoints only work with hardware support. */ |
8820 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
8821 | } |
8822 | ||
9c06b0b4 | 8823 | static enum print_stop_action |
348d480f | 8824 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 8825 | { |
348d480f PA |
8826 | struct cleanup *old_chain; |
8827 | struct breakpoint *b; | |
8828 | const struct bp_location *bl; | |
8829 | struct ui_stream *stb; | |
8830 | enum print_stop_action result; | |
3a5c3e22 | 8831 | struct watchpoint *w; |
79a45e25 | 8832 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8833 | |
8834 | gdb_assert (bs->bp_location_at != NULL); | |
8835 | ||
8836 | bl = bs->bp_location_at; | |
8837 | b = bs->breakpoint_at; | |
3a5c3e22 | 8838 | w = (struct watchpoint *) b; |
348d480f PA |
8839 | |
8840 | stb = ui_out_stream_new (uiout); | |
8841 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
9c06b0b4 TJB |
8842 | |
8843 | switch (b->type) | |
8844 | { | |
348d480f | 8845 | case bp_watchpoint: |
9c06b0b4 TJB |
8846 | case bp_hardware_watchpoint: |
8847 | annotate_watchpoint (b->number); | |
8848 | if (ui_out_is_mi_like_p (uiout)) | |
8849 | ui_out_field_string | |
8850 | (uiout, "reason", | |
8851 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8852 | mention (b); |
8853 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8854 | ui_out_text (uiout, "\nOld value = "); | |
8855 | watchpoint_value_print (bs->old_val, stb->stream); | |
8856 | ui_out_field_stream (uiout, "old", stb); | |
8857 | ui_out_text (uiout, "\nNew value = "); | |
3a5c3e22 | 8858 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8859 | ui_out_field_stream (uiout, "new", stb); |
8860 | ui_out_text (uiout, "\n"); | |
8861 | /* More than one watchpoint may have been triggered. */ | |
8862 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8863 | break; |
8864 | ||
8865 | case bp_read_watchpoint: | |
8866 | if (ui_out_is_mi_like_p (uiout)) | |
8867 | ui_out_field_string | |
8868 | (uiout, "reason", | |
8869 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8870 | mention (b); |
8871 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8872 | ui_out_text (uiout, "\nValue = "); | |
3a5c3e22 | 8873 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8874 | ui_out_field_stream (uiout, "value", stb); |
8875 | ui_out_text (uiout, "\n"); | |
8876 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8877 | break; |
8878 | ||
8879 | case bp_access_watchpoint: | |
348d480f PA |
8880 | if (bs->old_val != NULL) |
8881 | { | |
8882 | annotate_watchpoint (b->number); | |
8883 | if (ui_out_is_mi_like_p (uiout)) | |
8884 | ui_out_field_string | |
8885 | (uiout, "reason", | |
8886 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8887 | mention (b); | |
8888 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8889 | ui_out_text (uiout, "\nOld value = "); | |
8890 | watchpoint_value_print (bs->old_val, stb->stream); | |
8891 | ui_out_field_stream (uiout, "old", stb); | |
8892 | ui_out_text (uiout, "\nNew value = "); | |
8893 | } | |
8894 | else | |
8895 | { | |
8896 | mention (b); | |
8897 | if (ui_out_is_mi_like_p (uiout)) | |
8898 | ui_out_field_string | |
8899 | (uiout, "reason", | |
8900 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8901 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8902 | ui_out_text (uiout, "\nValue = "); | |
8903 | } | |
3a5c3e22 | 8904 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8905 | ui_out_field_stream (uiout, "new", stb); |
8906 | ui_out_text (uiout, "\n"); | |
8907 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8908 | break; |
8909 | default: | |
348d480f | 8910 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
8911 | } |
8912 | ||
348d480f PA |
8913 | do_cleanups (old_chain); |
8914 | return result; | |
8915 | } | |
8916 | ||
8917 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
8918 | watchpoints. */ | |
8919 | ||
8920 | static void | |
8921 | print_mention_watchpoint (struct breakpoint *b) | |
8922 | { | |
8923 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 8924 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 8925 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8926 | |
8927 | switch (b->type) | |
8928 | { | |
8929 | case bp_watchpoint: | |
8930 | ui_out_text (uiout, "Watchpoint "); | |
8931 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8932 | break; | |
8933 | case bp_hardware_watchpoint: | |
8934 | ui_out_text (uiout, "Hardware watchpoint "); | |
8935 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8936 | break; | |
8937 | case bp_read_watchpoint: | |
8938 | ui_out_text (uiout, "Hardware read watchpoint "); | |
8939 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8940 | break; | |
8941 | case bp_access_watchpoint: | |
8942 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
8943 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8944 | break; | |
8945 | default: | |
8946 | internal_error (__FILE__, __LINE__, | |
8947 | _("Invalid hardware watchpoint type.")); | |
8948 | } | |
8949 | ||
8950 | ui_out_field_int (uiout, "number", b->number); | |
8951 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8952 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
8953 | do_cleanups (ui_out_chain); |
8954 | } | |
8955 | ||
8956 | /* Implement the "print_recreate" breakpoint_ops method for | |
8957 | watchpoints. */ | |
8958 | ||
8959 | static void | |
8960 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8961 | { | |
3a5c3e22 PA |
8962 | struct watchpoint *w = (struct watchpoint *) b; |
8963 | ||
348d480f PA |
8964 | switch (b->type) |
8965 | { | |
8966 | case bp_watchpoint: | |
8967 | case bp_hardware_watchpoint: | |
8968 | fprintf_unfiltered (fp, "watch"); | |
8969 | break; | |
8970 | case bp_read_watchpoint: | |
8971 | fprintf_unfiltered (fp, "rwatch"); | |
8972 | break; | |
8973 | case bp_access_watchpoint: | |
8974 | fprintf_unfiltered (fp, "awatch"); | |
8975 | break; | |
8976 | default: | |
8977 | internal_error (__FILE__, __LINE__, | |
8978 | _("Invalid watchpoint type.")); | |
8979 | } | |
8980 | ||
3a5c3e22 | 8981 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 8982 | print_recreate_thread (b, fp); |
348d480f PA |
8983 | } |
8984 | ||
8985 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8986 | ||
2060206e | 8987 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
8988 | |
8989 | /* Implement the "insert" breakpoint_ops method for | |
8990 | masked hardware watchpoints. */ | |
8991 | ||
8992 | static int | |
8993 | insert_masked_watchpoint (struct bp_location *bl) | |
8994 | { | |
3a5c3e22 PA |
8995 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8996 | ||
8997 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8998 | bl->watchpoint_type); |
8999 | } | |
9000 | ||
9001 | /* Implement the "remove" breakpoint_ops method for | |
9002 | masked hardware watchpoints. */ | |
9003 | ||
9004 | static int | |
9005 | remove_masked_watchpoint (struct bp_location *bl) | |
9006 | { | |
3a5c3e22 PA |
9007 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
9008 | ||
9009 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
9010 | bl->watchpoint_type); |
9011 | } | |
9012 | ||
9013 | /* Implement the "resources_needed" breakpoint_ops method for | |
9014 | masked hardware watchpoints. */ | |
9015 | ||
9016 | static int | |
9017 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
9018 | { | |
3a5c3e22 PA |
9019 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
9020 | ||
9021 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
9022 | } |
9023 | ||
9024 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
9025 | masked hardware watchpoints. */ | |
9026 | ||
9027 | static int | |
9028 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
9029 | { | |
9030 | return 0; | |
9031 | } | |
9032 | ||
9033 | /* Implement the "print_it" breakpoint_ops method for | |
9034 | masked hardware watchpoints. */ | |
9035 | ||
9036 | static enum print_stop_action | |
9037 | print_it_masked_watchpoint (bpstat bs) | |
9038 | { | |
9039 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9040 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9041 | |
9042 | /* Masked watchpoints have only one location. */ | |
9043 | gdb_assert (b->loc && b->loc->next == NULL); | |
9044 | ||
9045 | switch (b->type) | |
9046 | { | |
9047 | case bp_hardware_watchpoint: | |
9048 | annotate_watchpoint (b->number); | |
9049 | if (ui_out_is_mi_like_p (uiout)) | |
9050 | ui_out_field_string | |
9051 | (uiout, "reason", | |
9052 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
9053 | break; | |
9054 | ||
9055 | case bp_read_watchpoint: | |
9056 | if (ui_out_is_mi_like_p (uiout)) | |
9057 | ui_out_field_string | |
9058 | (uiout, "reason", | |
9059 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
9060 | break; | |
9061 | ||
9062 | case bp_access_watchpoint: | |
9063 | if (ui_out_is_mi_like_p (uiout)) | |
9064 | ui_out_field_string | |
9065 | (uiout, "reason", | |
9066 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
9067 | break; | |
9068 | default: | |
9069 | internal_error (__FILE__, __LINE__, | |
9070 | _("Invalid hardware watchpoint type.")); | |
9071 | } | |
9072 | ||
9073 | mention (b); | |
9c06b0b4 TJB |
9074 | ui_out_text (uiout, _("\n\ |
9075 | Check the underlying instruction at PC for the memory\n\ | |
9076 | address and value which triggered this watchpoint.\n")); | |
9077 | ui_out_text (uiout, "\n"); | |
9078 | ||
9079 | /* More than one watchpoint may have been triggered. */ | |
9080 | return PRINT_UNKNOWN; | |
9081 | } | |
9082 | ||
9083 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9084 | masked hardware watchpoints. */ | |
9085 | ||
9086 | static void | |
9087 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
9088 | struct ui_out *uiout) | |
9089 | { | |
3a5c3e22 PA |
9090 | struct watchpoint *w = (struct watchpoint *) b; |
9091 | ||
9c06b0b4 TJB |
9092 | /* Masked watchpoints have only one location. */ |
9093 | gdb_assert (b->loc && b->loc->next == NULL); | |
9094 | ||
9095 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 9096 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
9097 | ui_out_text (uiout, "\n"); |
9098 | } | |
9099 | ||
9100 | /* Implement the "print_mention" breakpoint_ops method for | |
9101 | masked hardware watchpoints. */ | |
9102 | ||
9103 | static void | |
9104 | print_mention_masked_watchpoint (struct breakpoint *b) | |
9105 | { | |
3a5c3e22 | 9106 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 9107 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
9108 | struct cleanup *ui_out_chain; |
9109 | ||
9110 | switch (b->type) | |
9111 | { | |
9112 | case bp_hardware_watchpoint: | |
9113 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
9114 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
9115 | break; | |
9116 | case bp_read_watchpoint: | |
9117 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
9118 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
9119 | break; | |
9120 | case bp_access_watchpoint: | |
9121 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
9122 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
9123 | break; | |
9124 | default: | |
9125 | internal_error (__FILE__, __LINE__, | |
9126 | _("Invalid hardware watchpoint type.")); | |
9127 | } | |
9128 | ||
9129 | ui_out_field_int (uiout, "number", b->number); | |
9130 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 9131 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
9132 | do_cleanups (ui_out_chain); |
9133 | } | |
9134 | ||
9135 | /* Implement the "print_recreate" breakpoint_ops method for | |
9136 | masked hardware watchpoints. */ | |
9137 | ||
9138 | static void | |
9139 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
9140 | { | |
3a5c3e22 | 9141 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
9142 | char tmp[40]; |
9143 | ||
9144 | switch (b->type) | |
9145 | { | |
9146 | case bp_hardware_watchpoint: | |
9147 | fprintf_unfiltered (fp, "watch"); | |
9148 | break; | |
9149 | case bp_read_watchpoint: | |
9150 | fprintf_unfiltered (fp, "rwatch"); | |
9151 | break; | |
9152 | case bp_access_watchpoint: | |
9153 | fprintf_unfiltered (fp, "awatch"); | |
9154 | break; | |
9155 | default: | |
9156 | internal_error (__FILE__, __LINE__, | |
9157 | _("Invalid hardware watchpoint type.")); | |
9158 | } | |
9159 | ||
3a5c3e22 PA |
9160 | sprintf_vma (tmp, w->hw_wp_mask); |
9161 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 9162 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
9163 | } |
9164 | ||
9165 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
9166 | ||
2060206e | 9167 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
9168 | |
9169 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
9170 | ||
9171 | static int | |
9172 | is_masked_watchpoint (const struct breakpoint *b) | |
9173 | { | |
9174 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
9175 | } | |
9176 | ||
53a5351d JM |
9177 | /* accessflag: hw_write: watch write, |
9178 | hw_read: watch read, | |
9179 | hw_access: watch access (read or write) */ | |
c906108c | 9180 | static void |
84f4c1fe PM |
9181 | watch_command_1 (char *arg, int accessflag, int from_tty, |
9182 | int just_location, int internal) | |
c906108c | 9183 | { |
a9634178 | 9184 | volatile struct gdb_exception e; |
d983da9c | 9185 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 9186 | struct expression *exp; |
60e1c644 | 9187 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 9188 | struct value *val, *mark, *result; |
c906108c | 9189 | struct frame_info *frame; |
c906108c SS |
9190 | char *exp_start = NULL; |
9191 | char *exp_end = NULL; | |
9c06b0b4 TJB |
9192 | char *tok, *end_tok; |
9193 | int toklen = -1; | |
c906108c SS |
9194 | char *cond_start = NULL; |
9195 | char *cond_end = NULL; | |
c906108c | 9196 | enum bptype bp_type; |
37e4754d | 9197 | int thread = -1; |
0cf6dd15 | 9198 | int pc = 0; |
9c06b0b4 TJB |
9199 | /* Flag to indicate whether we are going to use masks for |
9200 | the hardware watchpoint. */ | |
9201 | int use_mask = 0; | |
9202 | CORE_ADDR mask = 0; | |
3a5c3e22 | 9203 | struct watchpoint *w; |
c906108c | 9204 | |
37e4754d LM |
9205 | /* Make sure that we actually have parameters to parse. */ |
9206 | if (arg != NULL && arg[0] != '\0') | |
9207 | { | |
9c06b0b4 | 9208 | char *value_start; |
37e4754d | 9209 | |
9c06b0b4 TJB |
9210 | /* Look for "parameter value" pairs at the end |
9211 | of the arguments string. */ | |
9212 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
9213 | { | |
9214 | /* Skip whitespace at the end of the argument list. */ | |
9215 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9216 | tok--; | |
9217 | ||
9218 | /* Find the beginning of the last token. | |
9219 | This is the value of the parameter. */ | |
9220 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9221 | tok--; | |
9222 | value_start = tok + 1; | |
9223 | ||
9224 | /* Skip whitespace. */ | |
9225 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9226 | tok--; | |
9227 | ||
9228 | end_tok = tok; | |
9229 | ||
9230 | /* Find the beginning of the second to last token. | |
9231 | This is the parameter itself. */ | |
9232 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9233 | tok--; | |
9234 | tok++; | |
9235 | toklen = end_tok - tok + 1; | |
9236 | ||
9237 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
9238 | { | |
9239 | /* At this point we've found a "thread" token, which means | |
9240 | the user is trying to set a watchpoint that triggers | |
9241 | only in a specific thread. */ | |
9242 | char *endp; | |
37e4754d | 9243 | |
9c06b0b4 TJB |
9244 | if (thread != -1) |
9245 | error(_("You can specify only one thread.")); | |
37e4754d | 9246 | |
9c06b0b4 TJB |
9247 | /* Extract the thread ID from the next token. */ |
9248 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 9249 | |
9c06b0b4 TJB |
9250 | /* Check if the user provided a valid numeric value for the |
9251 | thread ID. */ | |
9252 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
9253 | error (_("Invalid thread ID specification %s."), value_start); | |
9254 | ||
9255 | /* Check if the thread actually exists. */ | |
9256 | if (!valid_thread_id (thread)) | |
9257 | error (_("Unknown thread %d."), thread); | |
9258 | } | |
9259 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
9260 | { | |
9261 | /* We've found a "mask" token, which means the user wants to | |
9262 | create a hardware watchpoint that is going to have the mask | |
9263 | facility. */ | |
9264 | struct value *mask_value, *mark; | |
37e4754d | 9265 | |
9c06b0b4 TJB |
9266 | if (use_mask) |
9267 | error(_("You can specify only one mask.")); | |
37e4754d | 9268 | |
9c06b0b4 | 9269 | use_mask = just_location = 1; |
37e4754d | 9270 | |
9c06b0b4 TJB |
9271 | mark = value_mark (); |
9272 | mask_value = parse_to_comma_and_eval (&value_start); | |
9273 | mask = value_as_address (mask_value); | |
9274 | value_free_to_mark (mark); | |
9275 | } | |
9276 | else | |
9277 | /* We didn't recognize what we found. We should stop here. */ | |
9278 | break; | |
37e4754d | 9279 | |
9c06b0b4 TJB |
9280 | /* Truncate the string and get rid of the "parameter value" pair before |
9281 | the arguments string is parsed by the parse_exp_1 function. */ | |
9282 | *tok = '\0'; | |
9283 | } | |
37e4754d LM |
9284 | } |
9285 | ||
9286 | /* Parse the rest of the arguments. */ | |
c906108c SS |
9287 | innermost_block = NULL; |
9288 | exp_start = arg; | |
9289 | exp = parse_exp_1 (&arg, 0, 0); | |
9290 | exp_end = arg; | |
fa8a61dc TT |
9291 | /* Remove trailing whitespace from the expression before saving it. |
9292 | This makes the eventual display of the expression string a bit | |
9293 | prettier. */ | |
9294 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9295 | --exp_end; | |
9296 | ||
65d79d4b SDJ |
9297 | /* Checking if the expression is not constant. */ |
9298 | if (watchpoint_exp_is_const (exp)) | |
9299 | { | |
9300 | int len; | |
9301 | ||
9302 | len = exp_end - exp_start; | |
9303 | while (len > 0 && isspace (exp_start[len - 1])) | |
9304 | len--; | |
9305 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9306 | } | |
9307 | ||
c906108c SS |
9308 | exp_valid_block = innermost_block; |
9309 | mark = value_mark (); | |
a1442452 | 9310 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
9311 | |
9312 | if (just_location) | |
9313 | { | |
9c06b0b4 TJB |
9314 | int ret; |
9315 | ||
06a64a0b | 9316 | exp_valid_block = NULL; |
a1442452 | 9317 | val = value_addr (result); |
06a64a0b TT |
9318 | release_value (val); |
9319 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
9320 | |
9321 | if (use_mask) | |
9322 | { | |
9323 | ret = target_masked_watch_num_registers (value_as_address (val), | |
9324 | mask); | |
9325 | if (ret == -1) | |
9326 | error (_("This target does not support masked watchpoints.")); | |
9327 | else if (ret == -2) | |
9328 | error (_("Invalid mask or memory region.")); | |
9329 | } | |
06a64a0b TT |
9330 | } |
9331 | else if (val != NULL) | |
fa4727a6 | 9332 | release_value (val); |
c906108c | 9333 | |
e9cafbcc TT |
9334 | tok = skip_spaces (arg); |
9335 | end_tok = skip_to_space (tok); | |
c906108c SS |
9336 | |
9337 | toklen = end_tok - tok; | |
9338 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
9339 | { | |
2d134ed3 PA |
9340 | struct expression *cond; |
9341 | ||
60e1c644 | 9342 | innermost_block = NULL; |
c906108c SS |
9343 | tok = cond_start = end_tok + 1; |
9344 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
9345 | |
9346 | /* The watchpoint expression may not be local, but the condition | |
9347 | may still be. E.g.: `watch global if local > 0'. */ | |
9348 | cond_exp_valid_block = innermost_block; | |
9349 | ||
2d134ed3 | 9350 | xfree (cond); |
c906108c SS |
9351 | cond_end = tok; |
9352 | } | |
9353 | if (*tok) | |
8a3fe4f8 | 9354 | error (_("Junk at end of command.")); |
c906108c | 9355 | |
53a5351d | 9356 | if (accessflag == hw_read) |
c5aa993b | 9357 | bp_type = bp_read_watchpoint; |
53a5351d | 9358 | else if (accessflag == hw_access) |
c5aa993b JM |
9359 | bp_type = bp_access_watchpoint; |
9360 | else | |
9361 | bp_type = bp_hardware_watchpoint; | |
c906108c | 9362 | |
d983da9c | 9363 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
9364 | |
9365 | /* If the expression is "local", then set up a "watchpoint scope" | |
9366 | breakpoint at the point where we've left the scope of the watchpoint | |
9367 | expression. Create the scope breakpoint before the watchpoint, so | |
9368 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 9369 | if (exp_valid_block && frame) |
d983da9c | 9370 | { |
edb3359d DJ |
9371 | if (frame_id_p (frame_unwind_caller_id (frame))) |
9372 | { | |
9373 | scope_breakpoint | |
a6d9a66e UW |
9374 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
9375 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
9376 | bp_watchpoint_scope, |
9377 | &momentary_breakpoint_ops); | |
d983da9c | 9378 | |
edb3359d | 9379 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 9380 | |
edb3359d DJ |
9381 | /* Automatically delete the breakpoint when it hits. */ |
9382 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 9383 | |
edb3359d DJ |
9384 | /* Only break in the proper frame (help with recursion). */ |
9385 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 9386 | |
edb3359d | 9387 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
9388 | scope_breakpoint->loc->gdbarch |
9389 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
9390 | scope_breakpoint->loc->requested_address |
9391 | = frame_unwind_caller_pc (frame); | |
9392 | scope_breakpoint->loc->address | |
a6d9a66e UW |
9393 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
9394 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
9395 | scope_breakpoint->type); |
9396 | } | |
d983da9c DJ |
9397 | } |
9398 | ||
c906108c | 9399 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
9400 | |
9401 | w = XCNEW (struct watchpoint); | |
9402 | b = &w->base; | |
348d480f | 9403 | if (use_mask) |
3a5c3e22 PA |
9404 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9405 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 9406 | else |
3a5c3e22 PA |
9407 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9408 | &watchpoint_breakpoint_ops); | |
37e4754d | 9409 | b->thread = thread; |
b5de0fa7 | 9410 | b->disposition = disp_donttouch; |
348d480f | 9411 | b->pspace = current_program_space; |
3a5c3e22 PA |
9412 | w->exp = exp; |
9413 | w->exp_valid_block = exp_valid_block; | |
9414 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
9415 | if (just_location) |
9416 | { | |
9417 | struct type *t = value_type (val); | |
9418 | CORE_ADDR addr = value_as_address (val); | |
9419 | char *name; | |
9420 | ||
9421 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
9422 | name = type_to_string (t); | |
9423 | ||
3a5c3e22 | 9424 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 9425 | core_addr_to_string (addr)); |
06a64a0b TT |
9426 | xfree (name); |
9427 | ||
3a5c3e22 | 9428 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
9429 | (int) (exp_end - exp_start), exp_start); |
9430 | ||
06a64a0b TT |
9431 | /* The above expression is in C. */ |
9432 | b->language = language_c; | |
9433 | } | |
9434 | else | |
3a5c3e22 | 9435 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
9436 | |
9437 | if (use_mask) | |
9438 | { | |
3a5c3e22 | 9439 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
9440 | } |
9441 | else | |
9442 | { | |
3a5c3e22 PA |
9443 | w->val = val; |
9444 | w->val_valid = 1; | |
9c06b0b4 | 9445 | } |
77b06cd7 | 9446 | |
c906108c SS |
9447 | if (cond_start) |
9448 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9449 | else | |
9450 | b->cond_string = 0; | |
c5aa993b | 9451 | |
c906108c | 9452 | if (frame) |
f6bc2008 | 9453 | { |
3a5c3e22 PA |
9454 | w->watchpoint_frame = get_frame_id (frame); |
9455 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 9456 | } |
c906108c | 9457 | else |
f6bc2008 | 9458 | { |
3a5c3e22 PA |
9459 | w->watchpoint_frame = null_frame_id; |
9460 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 9461 | } |
c906108c | 9462 | |
d983da9c | 9463 | if (scope_breakpoint != NULL) |
c906108c | 9464 | { |
d983da9c DJ |
9465 | /* The scope breakpoint is related to the watchpoint. We will |
9466 | need to act on them together. */ | |
9467 | b->related_breakpoint = scope_breakpoint; | |
9468 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9469 | } |
d983da9c | 9470 | |
06a64a0b TT |
9471 | if (!just_location) |
9472 | value_free_to_mark (mark); | |
2d134ed3 | 9473 | |
a9634178 TJB |
9474 | TRY_CATCH (e, RETURN_MASK_ALL) |
9475 | { | |
9476 | /* Finally update the new watchpoint. This creates the locations | |
9477 | that should be inserted. */ | |
3a5c3e22 | 9478 | update_watchpoint (w, 1); |
a9634178 TJB |
9479 | } |
9480 | if (e.reason < 0) | |
9481 | { | |
9482 | delete_breakpoint (b); | |
9483 | throw_exception (e); | |
9484 | } | |
9485 | ||
3ea46bff | 9486 | install_breakpoint (internal, b, 1); |
c906108c SS |
9487 | } |
9488 | ||
e09342b5 | 9489 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 9490 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 9491 | |
c906108c | 9492 | static int |
a9634178 | 9493 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
9494 | { |
9495 | int found_memory_cnt = 0; | |
2e70b7b9 | 9496 | struct value *head = v; |
c906108c SS |
9497 | |
9498 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9499 | if (!can_use_hw_watchpoints) |
c906108c | 9500 | return 0; |
c5aa993b | 9501 | |
5c44784c JM |
9502 | /* Make sure that the value of the expression depends only upon |
9503 | memory contents, and values computed from them within GDB. If we | |
9504 | find any register references or function calls, we can't use a | |
9505 | hardware watchpoint. | |
9506 | ||
9507 | The idea here is that evaluating an expression generates a series | |
9508 | of values, one holding the value of every subexpression. (The | |
9509 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9510 | a*b+c.) GDB's values hold almost enough information to establish | |
9511 | the criteria given above --- they identify memory lvalues, | |
9512 | register lvalues, computed values, etcetera. So we can evaluate | |
9513 | the expression, and then scan the chain of values that leaves | |
9514 | behind to decide whether we can detect any possible change to the | |
9515 | expression's final value using only hardware watchpoints. | |
9516 | ||
9517 | However, I don't think that the values returned by inferior | |
9518 | function calls are special in any way. So this function may not | |
9519 | notice that an expression involving an inferior function call | |
9520 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9521 | for (; v; v = value_next (v)) |
c906108c | 9522 | { |
5c44784c | 9523 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9524 | { |
8464be76 DJ |
9525 | if (v != head && value_lazy (v)) |
9526 | /* A lazy memory lvalue in the chain is one that GDB never | |
9527 | needed to fetch; we either just used its address (e.g., | |
9528 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9529 | in `a,b'). This doesn't apply to HEAD; if that is | |
9530 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9531 | ; |
53a5351d | 9532 | else |
5c44784c JM |
9533 | { |
9534 | /* Ahh, memory we actually used! Check if we can cover | |
9535 | it with hardware watchpoints. */ | |
df407dfe | 9536 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9537 | |
9538 | /* We only watch structs and arrays if user asked for it | |
9539 | explicitly, never if they just happen to appear in a | |
9540 | middle of some value chain. */ | |
9541 | if (v == head | |
9542 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9543 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9544 | { | |
42ae5230 | 9545 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9546 | int len; |
9547 | int num_regs; | |
9548 | ||
a9634178 | 9549 | len = (target_exact_watchpoints |
e09342b5 TJB |
9550 | && is_scalar_type_recursive (vtype))? |
9551 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9552 | |
e09342b5 TJB |
9553 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9554 | if (!num_regs) | |
2e70b7b9 MS |
9555 | return 0; |
9556 | else | |
e09342b5 | 9557 | found_memory_cnt += num_regs; |
2e70b7b9 | 9558 | } |
5c44784c | 9559 | } |
c5aa993b | 9560 | } |
5086187c AC |
9561 | else if (VALUE_LVAL (v) != not_lval |
9562 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9563 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9564 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9565 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9566 | } |
9567 | ||
9568 | /* The expression itself looks suitable for using a hardware | |
9569 | watchpoint, but give the target machine a chance to reject it. */ | |
9570 | return found_memory_cnt; | |
9571 | } | |
9572 | ||
8b93c638 | 9573 | void |
84f4c1fe | 9574 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9575 | { |
84f4c1fe | 9576 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9577 | } |
9578 | ||
9579 | /* A helper function that looks for an argument at the start of a | |
9580 | string. The argument must also either be at the end of the string, | |
9581 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9582 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9583 | ||
9584 | static int | |
9585 | check_for_argument (char **str, char *arg, int arg_len) | |
9586 | { | |
9587 | if (strncmp (*str, arg, arg_len) == 0 | |
9588 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9589 | { | |
9590 | *str += arg_len; | |
9591 | return 1; | |
9592 | } | |
9593 | return 0; | |
9594 | } | |
9595 | ||
9596 | /* A helper function that looks for the "-location" argument and then | |
9597 | calls watch_command_1. */ | |
9598 | ||
9599 | static void | |
9600 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9601 | { | |
9602 | int just_location = 0; | |
9603 | ||
9604 | if (arg | |
9605 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9606 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9607 | { | |
e9cafbcc | 9608 | arg = skip_spaces (arg); |
06a64a0b TT |
9609 | just_location = 1; |
9610 | } | |
9611 | ||
84f4c1fe | 9612 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9613 | } |
8926118c | 9614 | |
c5aa993b | 9615 | static void |
fba45db2 | 9616 | watch_command (char *arg, int from_tty) |
c906108c | 9617 | { |
06a64a0b | 9618 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9619 | } |
9620 | ||
8b93c638 | 9621 | void |
84f4c1fe | 9622 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9623 | { |
84f4c1fe | 9624 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9625 | } |
8926118c | 9626 | |
c5aa993b | 9627 | static void |
fba45db2 | 9628 | rwatch_command (char *arg, int from_tty) |
c906108c | 9629 | { |
06a64a0b | 9630 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9631 | } |
9632 | ||
8b93c638 | 9633 | void |
84f4c1fe | 9634 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9635 | { |
84f4c1fe | 9636 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9637 | } |
8926118c | 9638 | |
c5aa993b | 9639 | static void |
fba45db2 | 9640 | awatch_command (char *arg, int from_tty) |
c906108c | 9641 | { |
06a64a0b | 9642 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9643 | } |
c906108c | 9644 | \f |
c5aa993b | 9645 | |
43ff13b4 | 9646 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9647 | because it uses the mechanisms of breakpoints. */ |
9648 | ||
bfec99b2 PA |
9649 | struct until_break_command_continuation_args |
9650 | { | |
9651 | struct breakpoint *breakpoint; | |
9652 | struct breakpoint *breakpoint2; | |
186c406b | 9653 | int thread_num; |
bfec99b2 PA |
9654 | }; |
9655 | ||
43ff13b4 | 9656 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9657 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9658 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9659 | command. */ |
c2c6d25f | 9660 | static void |
fa4cd53f | 9661 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 9662 | { |
bfec99b2 PA |
9663 | struct until_break_command_continuation_args *a = arg; |
9664 | ||
9665 | delete_breakpoint (a->breakpoint); | |
9666 | if (a->breakpoint2) | |
9667 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9668 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9669 | } |
9670 | ||
c906108c | 9671 | void |
ae66c1fc | 9672 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9673 | { |
9674 | struct symtabs_and_lines sals; | |
9675 | struct symtab_and_line sal; | |
206415a3 | 9676 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9677 | struct breakpoint *breakpoint; |
f107f563 | 9678 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9679 | struct cleanup *old_chain; |
186c406b TT |
9680 | int thread; |
9681 | struct thread_info *tp; | |
c906108c SS |
9682 | |
9683 | clear_proceed_status (); | |
9684 | ||
9685 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9686 | this function. */ |
c5aa993b | 9687 | |
1bfeeb0f JL |
9688 | if (last_displayed_sal_is_valid ()) |
9689 | sals = decode_line_1 (&arg, 1, | |
9690 | get_last_displayed_symtab (), | |
9691 | get_last_displayed_line (), | |
9692 | NULL); | |
c906108c | 9693 | else |
58438ac1 | 9694 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL); |
c5aa993b | 9695 | |
c906108c | 9696 | if (sals.nelts != 1) |
8a3fe4f8 | 9697 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9698 | |
c906108c | 9699 | sal = sals.sals[0]; |
4a64f543 | 9700 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9701 | |
c906108c | 9702 | if (*arg) |
8a3fe4f8 | 9703 | error (_("Junk at end of arguments.")); |
c5aa993b | 9704 | |
c906108c | 9705 | resolve_sal_pc (&sal); |
c5aa993b | 9706 | |
ae66c1fc EZ |
9707 | if (anywhere) |
9708 | /* If the user told us to continue until a specified location, | |
9709 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9710 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9711 | null_frame_id, bp_until); | |
ae66c1fc | 9712 | else |
4a64f543 MS |
9713 | /* Otherwise, specify the selected frame, because we want to stop |
9714 | only at the very same frame. */ | |
a6d9a66e UW |
9715 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9716 | get_stack_frame_id (frame), | |
ae66c1fc | 9717 | bp_until); |
c5aa993b | 9718 | |
f107f563 | 9719 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9720 | |
186c406b TT |
9721 | tp = inferior_thread (); |
9722 | thread = tp->num; | |
9723 | ||
ae66c1fc EZ |
9724 | /* Keep within the current frame, or in frames called by the current |
9725 | one. */ | |
edb3359d DJ |
9726 | |
9727 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9728 | { |
edb3359d DJ |
9729 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9730 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9731 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9732 | sal, | |
edb3359d | 9733 | frame_unwind_caller_id (frame), |
f107f563 VP |
9734 | bp_until); |
9735 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9736 | |
9737 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9738 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9739 | } |
c5aa993b | 9740 | |
c906108c | 9741 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9742 | |
4a64f543 MS |
9743 | /* If we are running asynchronously, and proceed call above has |
9744 | actually managed to start the target, arrange for breakpoints to | |
9745 | be deleted when the target stops. Otherwise, we're already | |
9746 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9747 | |
8ea051c5 | 9748 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9749 | { |
bfec99b2 PA |
9750 | struct until_break_command_continuation_args *args; |
9751 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9752 | |
bfec99b2 PA |
9753 | args->breakpoint = breakpoint; |
9754 | args->breakpoint2 = breakpoint2; | |
186c406b | 9755 | args->thread_num = thread; |
f107f563 VP |
9756 | |
9757 | discard_cleanups (old_chain); | |
95e54da7 PA |
9758 | add_continuation (inferior_thread (), |
9759 | until_break_command_continuation, args, | |
604ead4a | 9760 | xfree); |
f107f563 VP |
9761 | } |
9762 | else | |
c5aa993b | 9763 | do_cleanups (old_chain); |
c906108c | 9764 | } |
ae66c1fc | 9765 | |
c906108c SS |
9766 | /* This function attempts to parse an optional "if <cond>" clause |
9767 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9768 | |
c906108c SS |
9769 | Else, it returns a pointer to the condition string. (It does not |
9770 | attempt to evaluate the string against a particular block.) And, | |
9771 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9772 | if clause in the arg string. */ |
53a5351d | 9773 | |
c906108c | 9774 | static char * |
fba45db2 | 9775 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9776 | { |
c5aa993b JM |
9777 | char *cond_string; |
9778 | ||
9779 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9780 | return NULL; |
c5aa993b | 9781 | |
4a64f543 | 9782 | /* Skip the "if" keyword. */ |
c906108c | 9783 | (*arg) += 2; |
c5aa993b | 9784 | |
c906108c | 9785 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9786 | condition string. */ |
e9cafbcc | 9787 | *arg = skip_spaces (*arg); |
c906108c | 9788 | cond_string = *arg; |
c5aa993b | 9789 | |
4a64f543 MS |
9790 | /* Assume that the condition occupies the remainder of the arg |
9791 | string. */ | |
c906108c | 9792 | (*arg) += strlen (cond_string); |
c5aa993b | 9793 | |
c906108c SS |
9794 | return cond_string; |
9795 | } | |
c5aa993b | 9796 | |
c906108c SS |
9797 | /* Commands to deal with catching events, such as signals, exceptions, |
9798 | process start/exit, etc. */ | |
c5aa993b JM |
9799 | |
9800 | typedef enum | |
9801 | { | |
44feb3ce TT |
9802 | catch_fork_temporary, catch_vfork_temporary, |
9803 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9804 | } |
9805 | catch_fork_kind; | |
9806 | ||
c906108c | 9807 | static void |
cc59ec59 MS |
9808 | catch_fork_command_1 (char *arg, int from_tty, |
9809 | struct cmd_list_element *command) | |
c906108c | 9810 | { |
a6d9a66e | 9811 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9812 | char *cond_string = NULL; |
44feb3ce TT |
9813 | catch_fork_kind fork_kind; |
9814 | int tempflag; | |
9815 | ||
9816 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9817 | tempflag = (fork_kind == catch_fork_temporary | |
9818 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9819 | |
44feb3ce TT |
9820 | if (!arg) |
9821 | arg = ""; | |
e9cafbcc | 9822 | arg = skip_spaces (arg); |
c5aa993b | 9823 | |
c906108c | 9824 | /* The allowed syntax is: |
c5aa993b JM |
9825 | catch [v]fork |
9826 | catch [v]fork if <cond> | |
9827 | ||
4a64f543 | 9828 | First, check if there's an if clause. */ |
c906108c | 9829 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9830 | |
c906108c | 9831 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9832 | error (_("Junk at end of arguments.")); |
c5aa993b | 9833 | |
c906108c | 9834 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9835 | and enable reporting of such events. */ |
c5aa993b JM |
9836 | switch (fork_kind) |
9837 | { | |
44feb3ce TT |
9838 | case catch_fork_temporary: |
9839 | case catch_fork_permanent: | |
a6d9a66e | 9840 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9841 | &catch_fork_breakpoint_ops); |
c906108c | 9842 | break; |
44feb3ce TT |
9843 | case catch_vfork_temporary: |
9844 | case catch_vfork_permanent: | |
a6d9a66e | 9845 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9846 | &catch_vfork_breakpoint_ops); |
c906108c | 9847 | break; |
c5aa993b | 9848 | default: |
8a3fe4f8 | 9849 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9850 | break; |
c5aa993b | 9851 | } |
c906108c SS |
9852 | } |
9853 | ||
9854 | static void | |
cc59ec59 MS |
9855 | catch_exec_command_1 (char *arg, int from_tty, |
9856 | struct cmd_list_element *command) | |
c906108c | 9857 | { |
b4d90040 | 9858 | struct exec_catchpoint *c; |
a6d9a66e | 9859 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9860 | int tempflag; |
c5aa993b | 9861 | char *cond_string = NULL; |
c906108c | 9862 | |
44feb3ce TT |
9863 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9864 | ||
9865 | if (!arg) | |
9866 | arg = ""; | |
e9cafbcc | 9867 | arg = skip_spaces (arg); |
c906108c SS |
9868 | |
9869 | /* The allowed syntax is: | |
c5aa993b JM |
9870 | catch exec |
9871 | catch exec if <cond> | |
c906108c | 9872 | |
4a64f543 | 9873 | First, check if there's an if clause. */ |
c906108c SS |
9874 | cond_string = ep_parse_optional_if_clause (&arg); |
9875 | ||
9876 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9877 | error (_("Junk at end of arguments.")); |
c906108c | 9878 | |
b4d90040 PA |
9879 | c = XNEW (struct exec_catchpoint); |
9880 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
9881 | &catch_exec_breakpoint_ops); | |
9882 | c->exec_pathname = NULL; | |
9883 | ||
3ea46bff | 9884 | install_breakpoint (0, &c->base, 1); |
c906108c | 9885 | } |
c5aa993b | 9886 | |
3086aeae | 9887 | static enum print_stop_action |
348d480f | 9888 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 9889 | { |
79a45e25 | 9890 | struct ui_out *uiout = current_uiout; |
348d480f | 9891 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 9892 | int bp_temp, bp_throw; |
3086aeae | 9893 | |
ade92717 | 9894 | annotate_catchpoint (b->number); |
3086aeae | 9895 | |
ade92717 AR |
9896 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9897 | if (b->loc->address != b->loc->requested_address) | |
9898 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9899 | b->loc->address, | |
9900 | b->number, 1); | |
df2b6d2d | 9901 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9902 | ui_out_text (uiout, |
9903 | bp_temp ? "Temporary catchpoint " | |
9904 | : "Catchpoint "); | |
9905 | if (!ui_out_is_mi_like_p (uiout)) | |
9906 | ui_out_field_int (uiout, "bkptno", b->number); | |
9907 | ui_out_text (uiout, | |
c0b37c48 AR |
9908 | bp_throw ? " (exception thrown), " |
9909 | : " (exception caught), "); | |
ade92717 AR |
9910 | if (ui_out_is_mi_like_p (uiout)) |
9911 | { | |
9912 | ui_out_field_string (uiout, "reason", | |
9913 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9914 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9915 | ui_out_field_int (uiout, "bkptno", b->number); | |
9916 | } | |
3086aeae DJ |
9917 | return PRINT_SRC_AND_LOC; |
9918 | } | |
9919 | ||
9920 | static void | |
cc59ec59 MS |
9921 | print_one_exception_catchpoint (struct breakpoint *b, |
9922 | struct bp_location **last_loc) | |
3086aeae | 9923 | { |
79a45b7d | 9924 | struct value_print_options opts; |
79a45e25 | 9925 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 9926 | |
79a45b7d TT |
9927 | get_user_print_options (&opts); |
9928 | if (opts.addressprint) | |
3086aeae DJ |
9929 | { |
9930 | annotate_field (4); | |
604133b5 AR |
9931 | if (b->loc == NULL || b->loc->shlib_disabled) |
9932 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9933 | else | |
5af949e3 UW |
9934 | ui_out_field_core_addr (uiout, "addr", |
9935 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9936 | } |
9937 | annotate_field (5); | |
604133b5 | 9938 | if (b->loc) |
a6d9a66e | 9939 | *last_loc = b->loc; |
3086aeae DJ |
9940 | if (strstr (b->addr_string, "throw") != NULL) |
9941 | ui_out_field_string (uiout, "what", "exception throw"); | |
9942 | else | |
9943 | ui_out_field_string (uiout, "what", "exception catch"); | |
9944 | } | |
9945 | ||
9946 | static void | |
9947 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9948 | { | |
79a45e25 | 9949 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
9950 | int bp_temp; |
9951 | int bp_throw; | |
9952 | ||
df2b6d2d | 9953 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9954 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9955 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9956 | : _("Catchpoint ")); | |
9957 | ui_out_field_int (uiout, "bkptno", b->number); | |
9958 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9959 | : _(" (catch)")); | |
3086aeae DJ |
9960 | } |
9961 | ||
6149aea9 PA |
9962 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9963 | catch catchpoints. */ | |
9964 | ||
9965 | static void | |
4a64f543 MS |
9966 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9967 | struct ui_file *fp) | |
6149aea9 PA |
9968 | { |
9969 | int bp_temp; | |
9970 | int bp_throw; | |
9971 | ||
9972 | bp_temp = b->disposition == disp_del; | |
9973 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9974 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9975 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 9976 | print_recreate_thread (b, fp); |
6149aea9 PA |
9977 | } |
9978 | ||
2060206e | 9979 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
9980 | |
9981 | static int | |
9982 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9983 | enum exception_event_kind ex_event, int from_tty) | |
9984 | { | |
604133b5 AR |
9985 | char *trigger_func_name; |
9986 | ||
3086aeae | 9987 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9988 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9989 | else |
604133b5 | 9990 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9991 | |
8cdf0e15 VP |
9992 | create_breakpoint (get_current_arch (), |
9993 | trigger_func_name, cond_string, -1, | |
9994 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9995 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9996 | 0, |
9997 | AUTO_BOOLEAN_TRUE /* pending */, | |
9998 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9999 | 1 /* enabled */, |
10000 | 0 /* internal */); | |
3086aeae | 10001 | |
3086aeae DJ |
10002 | return 1; |
10003 | } | |
10004 | ||
4a64f543 | 10005 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
10006 | |
10007 | static void | |
fba45db2 KB |
10008 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
10009 | int tempflag, int from_tty) | |
c906108c | 10010 | { |
c5aa993b | 10011 | char *cond_string = NULL; |
c5aa993b | 10012 | |
44feb3ce TT |
10013 | if (!arg) |
10014 | arg = ""; | |
e9cafbcc | 10015 | arg = skip_spaces (arg); |
c5aa993b | 10016 | |
c906108c SS |
10017 | cond_string = ep_parse_optional_if_clause (&arg); |
10018 | ||
10019 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 10020 | error (_("Junk at end of arguments.")); |
c906108c | 10021 | |
059fb39f PM |
10022 | if (ex_event != EX_EVENT_THROW |
10023 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 10024 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 10025 | |
3086aeae DJ |
10026 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
10027 | return; | |
10028 | ||
8a3fe4f8 | 10029 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
10030 | } |
10031 | ||
44feb3ce TT |
10032 | /* Implementation of "catch catch" command. */ |
10033 | ||
10034 | static void | |
10035 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
10036 | { | |
10037 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 10038 | |
44feb3ce TT |
10039 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
10040 | } | |
10041 | ||
10042 | /* Implementation of "catch throw" command. */ | |
10043 | ||
10044 | static void | |
10045 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
10046 | { | |
10047 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 10048 | |
44feb3ce TT |
10049 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
10050 | } | |
10051 | ||
9ac4176b | 10052 | void |
28010a5d PA |
10053 | init_ada_exception_breakpoint (struct breakpoint *b, |
10054 | struct gdbarch *gdbarch, | |
10055 | struct symtab_and_line sal, | |
10056 | char *addr_string, | |
c0a91b2b | 10057 | const struct breakpoint_ops *ops, |
28010a5d PA |
10058 | int tempflag, |
10059 | int from_tty) | |
f7f9143b | 10060 | { |
f7f9143b JB |
10061 | if (from_tty) |
10062 | { | |
5af949e3 UW |
10063 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
10064 | if (!loc_gdbarch) | |
10065 | loc_gdbarch = gdbarch; | |
10066 | ||
6c95b8df PA |
10067 | describe_other_breakpoints (loc_gdbarch, |
10068 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
10069 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
10070 | version for exception catchpoints, because two catchpoints | |
10071 | used for different exception names will use the same address. | |
10072 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 10073 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 10074 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
10075 | the user what type of catchpoint it is. The above is good |
10076 | enough for now, though. */ | |
10077 | } | |
10078 | ||
28010a5d | 10079 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
10080 | |
10081 | b->enable_state = bp_enabled; | |
10082 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
10083 | b->addr_string = addr_string; |
10084 | b->language = language_ada; | |
f7f9143b JB |
10085 | } |
10086 | ||
a96d9b2e SDJ |
10087 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
10088 | filter list, or NULL if no filtering is required. */ | |
10089 | static VEC(int) * | |
10090 | catch_syscall_split_args (char *arg) | |
10091 | { | |
10092 | VEC(int) *result = NULL; | |
29d0bb3d | 10093 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
10094 | |
10095 | while (*arg != '\0') | |
10096 | { | |
10097 | int i, syscall_number; | |
10098 | char *endptr; | |
10099 | char cur_name[128]; | |
10100 | struct syscall s; | |
10101 | ||
10102 | /* Skip whitespace. */ | |
10103 | while (isspace (*arg)) | |
10104 | arg++; | |
10105 | ||
10106 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
10107 | cur_name[i] = arg[i]; | |
10108 | cur_name[i] = '\0'; | |
10109 | arg += i; | |
10110 | ||
10111 | /* Check if the user provided a syscall name or a number. */ | |
10112 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
10113 | if (*endptr == '\0') | |
bccd0dd2 | 10114 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
10115 | else |
10116 | { | |
10117 | /* We have a name. Let's check if it's valid and convert it | |
10118 | to a number. */ | |
10119 | get_syscall_by_name (cur_name, &s); | |
10120 | ||
10121 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
10122 | /* Here we have to issue an error instead of a warning, |
10123 | because GDB cannot do anything useful if there's no | |
10124 | syscall number to be caught. */ | |
a96d9b2e SDJ |
10125 | error (_("Unknown syscall name '%s'."), cur_name); |
10126 | } | |
10127 | ||
10128 | /* Ok, it's valid. */ | |
10129 | VEC_safe_push (int, result, s.number); | |
10130 | } | |
10131 | ||
10132 | discard_cleanups (cleanup); | |
10133 | return result; | |
10134 | } | |
10135 | ||
10136 | /* Implement the "catch syscall" command. */ | |
10137 | ||
10138 | static void | |
cc59ec59 MS |
10139 | catch_syscall_command_1 (char *arg, int from_tty, |
10140 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
10141 | { |
10142 | int tempflag; | |
10143 | VEC(int) *filter; | |
10144 | struct syscall s; | |
10145 | struct gdbarch *gdbarch = get_current_arch (); | |
10146 | ||
10147 | /* Checking if the feature if supported. */ | |
10148 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
10149 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 10150 | this architecture yet.")); |
a96d9b2e SDJ |
10151 | |
10152 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
10153 | ||
e9cafbcc | 10154 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
10155 | |
10156 | /* We need to do this first "dummy" translation in order | |
10157 | to get the syscall XML file loaded or, most important, | |
10158 | to display a warning to the user if there's no XML file | |
10159 | for his/her architecture. */ | |
10160 | get_syscall_by_number (0, &s); | |
10161 | ||
10162 | /* The allowed syntax is: | |
10163 | catch syscall | |
10164 | catch syscall <name | number> [<name | number> ... <name | number>] | |
10165 | ||
10166 | Let's check if there's a syscall name. */ | |
10167 | ||
10168 | if (arg != NULL) | |
10169 | filter = catch_syscall_split_args (arg); | |
10170 | else | |
10171 | filter = NULL; | |
10172 | ||
10173 | create_syscall_event_catchpoint (tempflag, filter, | |
10174 | &catch_syscall_breakpoint_ops); | |
10175 | } | |
10176 | ||
c906108c | 10177 | static void |
fba45db2 | 10178 | catch_command (char *arg, int from_tty) |
c906108c | 10179 | { |
44feb3ce | 10180 | error (_("Catch requires an event name.")); |
c906108c SS |
10181 | } |
10182 | \f | |
10183 | ||
10184 | static void | |
fba45db2 | 10185 | tcatch_command (char *arg, int from_tty) |
c906108c | 10186 | { |
44feb3ce | 10187 | error (_("Catch requires an event name.")); |
c906108c SS |
10188 | } |
10189 | ||
80f8a6eb | 10190 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10191 | |
10192 | static void | |
fba45db2 | 10193 | clear_command (char *arg, int from_tty) |
c906108c | 10194 | { |
d6e956e5 VP |
10195 | struct breakpoint *b; |
10196 | VEC(breakpoint_p) *found = 0; | |
10197 | int ix; | |
c906108c SS |
10198 | int default_match; |
10199 | struct symtabs_and_lines sals; | |
10200 | struct symtab_and_line sal; | |
c906108c SS |
10201 | int i; |
10202 | ||
10203 | if (arg) | |
10204 | { | |
10205 | sals = decode_line_spec (arg, 1); | |
10206 | default_match = 0; | |
10207 | } | |
10208 | else | |
10209 | { | |
c5aa993b | 10210 | sals.sals = (struct symtab_and_line *) |
c906108c | 10211 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 10212 | make_cleanup (xfree, sals.sals); |
4a64f543 | 10213 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
10214 | |
10215 | /* Set sal's line, symtab, pc, and pspace to the values | |
10216 | corresponding to the last call to print_frame_info. If the | |
10217 | codepoint is not valid, this will set all the fields to 0. */ | |
10218 | get_last_displayed_sal (&sal); | |
c906108c | 10219 | if (sal.symtab == 0) |
8a3fe4f8 | 10220 | error (_("No source file specified.")); |
c906108c SS |
10221 | |
10222 | sals.sals[0] = sal; | |
10223 | sals.nelts = 1; | |
10224 | ||
10225 | default_match = 1; | |
10226 | } | |
10227 | ||
4a64f543 MS |
10228 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10229 | seems, because all existing breakpoints typically have both | |
10230 | file/line and pc set. So, if clear is given file/line, we can | |
10231 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10232 | |
10233 | We only support clearing given the address explicitly | |
10234 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10235 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10236 | due to optimization, all in one block. |
4a64f543 MS |
10237 | |
10238 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10239 | PC corresponding to the same file:line, the breakpoint won't |
10240 | be cleared. We probably can still clear the breakpoint, but | |
10241 | since the other PC value is never presented to user, user | |
10242 | can only find it by guessing, and it does not seem important | |
10243 | to support that. */ | |
10244 | ||
4a64f543 MS |
10245 | /* For each line spec given, delete bps which correspond to it. Do |
10246 | it in two passes, solely to preserve the current behavior that | |
10247 | from_tty is forced true if we delete more than one | |
10248 | breakpoint. */ | |
c906108c | 10249 | |
80f8a6eb | 10250 | found = NULL; |
c906108c SS |
10251 | for (i = 0; i < sals.nelts; i++) |
10252 | { | |
10253 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
10254 | If line given (pc == 0), clear all bpts on specified line. |
10255 | If defaulting, clear all bpts on default line | |
c906108c | 10256 | or at default pc. |
c5aa993b JM |
10257 | |
10258 | defaulting sal.pc != 0 tests to do | |
10259 | ||
10260 | 0 1 pc | |
10261 | 1 1 pc _and_ line | |
10262 | 0 0 line | |
10263 | 1 0 <can't happen> */ | |
c906108c SS |
10264 | |
10265 | sal = sals.sals[i]; | |
c906108c | 10266 | |
4a64f543 | 10267 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 10268 | ALL_BREAKPOINTS (b) |
c5aa993b | 10269 | { |
0d381245 | 10270 | int match = 0; |
4a64f543 | 10271 | /* Are we going to delete b? */ |
cc60f2e3 | 10272 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
10273 | { |
10274 | struct bp_location *loc = b->loc; | |
10275 | for (; loc; loc = loc->next) | |
10276 | { | |
6c95b8df PA |
10277 | int pc_match = sal.pc |
10278 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
10279 | && (loc->address == sal.pc) |
10280 | && (!section_is_overlay (loc->section) | |
10281 | || loc->section == sal.section); | |
10282 | int line_match = ((default_match || (0 == sal.pc)) | |
10283 | && b->source_file != NULL | |
10284 | && sal.symtab != NULL | |
6c95b8df | 10285 | && sal.pspace == loc->pspace |
0ba1096a KT |
10286 | && filename_cmp (b->source_file, |
10287 | sal.symtab->filename) == 0 | |
0d381245 VP |
10288 | && b->line_number == sal.line); |
10289 | if (pc_match || line_match) | |
10290 | { | |
10291 | match = 1; | |
10292 | break; | |
10293 | } | |
10294 | } | |
10295 | } | |
10296 | ||
10297 | if (match) | |
d6e956e5 | 10298 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 10299 | } |
80f8a6eb MS |
10300 | } |
10301 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 10302 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
10303 | { |
10304 | if (arg) | |
8a3fe4f8 | 10305 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10306 | else |
8a3fe4f8 | 10307 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10308 | } |
c906108c | 10309 | |
d6e956e5 | 10310 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 10311 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10312 | if (from_tty) |
a3f17187 | 10313 | { |
d6e956e5 | 10314 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
10315 | printf_unfiltered (_("Deleted breakpoint ")); |
10316 | else | |
10317 | printf_unfiltered (_("Deleted breakpoints ")); | |
10318 | } | |
80f8a6eb | 10319 | breakpoints_changed (); |
d6e956e5 VP |
10320 | |
10321 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 10322 | { |
c5aa993b | 10323 | if (from_tty) |
d6e956e5 VP |
10324 | printf_unfiltered ("%d ", b->number); |
10325 | delete_breakpoint (b); | |
c906108c | 10326 | } |
80f8a6eb MS |
10327 | if (from_tty) |
10328 | putchar_unfiltered ('\n'); | |
c906108c SS |
10329 | } |
10330 | \f | |
10331 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10332 | all breakpoints that are marked for deletion, whether hit or not. | |
10333 | This is called after any breakpoint is hit, or after errors. */ | |
10334 | ||
10335 | void | |
fba45db2 | 10336 | breakpoint_auto_delete (bpstat bs) |
c906108c | 10337 | { |
35df4500 | 10338 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10339 | |
10340 | for (; bs; bs = bs->next) | |
f431efe5 PA |
10341 | if (bs->breakpoint_at |
10342 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10343 | && bs->stop) |
f431efe5 | 10344 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10345 | |
35df4500 | 10346 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10347 | { |
b5de0fa7 | 10348 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
10349 | delete_breakpoint (b); |
10350 | } | |
c906108c SS |
10351 | } |
10352 | ||
4a64f543 MS |
10353 | /* A comparison function for bp_location AP and BP being interfaced to |
10354 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
10355 | does breakpoint_address_is_meaningful say for its OWNER), | |
10356 | secondarily by ordering first bp_permanent OWNERed elements and | |
10357 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 10358 | qsort being an unstable algorithm. */ |
876fa593 JK |
10359 | |
10360 | static int | |
494cfb0f | 10361 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10362 | { |
494cfb0f JK |
10363 | struct bp_location *a = *(void **) ap; |
10364 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10365 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10366 | int a_perm = a->owner->enable_state == bp_permanent; |
10367 | int b_perm = b->owner->enable_state == bp_permanent; | |
10368 | ||
10369 | if (a->address != b->address) | |
10370 | return (a->address > b->address) - (a->address < b->address); | |
10371 | ||
10372 | /* Sort permanent breakpoints first. */ | |
10373 | if (a_perm != b_perm) | |
10374 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10375 | ||
4a64f543 MS |
10376 | /* Make the user-visible order stable across GDB runs. Locations of |
10377 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10378 | |
10379 | if (a->owner->number != b->owner->number) | |
10380 | return (a->owner->number > b->owner->number) | |
10381 | - (a->owner->number < b->owner->number); | |
10382 | ||
10383 | return (a > b) - (a < b); | |
10384 | } | |
10385 | ||
876fa593 | 10386 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10387 | bp_location_shadow_len_after_address_max according to the current |
10388 | content of the bp_location array. */ | |
f7545552 TT |
10389 | |
10390 | static void | |
876fa593 | 10391 | bp_location_target_extensions_update (void) |
f7545552 | 10392 | { |
876fa593 JK |
10393 | struct bp_location *bl, **blp_tmp; |
10394 | ||
10395 | bp_location_placed_address_before_address_max = 0; | |
10396 | bp_location_shadow_len_after_address_max = 0; | |
10397 | ||
10398 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10399 | { | |
10400 | CORE_ADDR start, end, addr; | |
10401 | ||
10402 | if (!bp_location_has_shadow (bl)) | |
10403 | continue; | |
10404 | ||
10405 | start = bl->target_info.placed_address; | |
10406 | end = start + bl->target_info.shadow_len; | |
10407 | ||
10408 | gdb_assert (bl->address >= start); | |
10409 | addr = bl->address - start; | |
10410 | if (addr > bp_location_placed_address_before_address_max) | |
10411 | bp_location_placed_address_before_address_max = addr; | |
10412 | ||
10413 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10414 | ||
10415 | gdb_assert (bl->address < end); | |
10416 | addr = end - bl->address; | |
10417 | if (addr > bp_location_shadow_len_after_address_max) | |
10418 | bp_location_shadow_len_after_address_max = addr; | |
10419 | } | |
f7545552 TT |
10420 | } |
10421 | ||
1e4d1764 YQ |
10422 | /* Download tracepoint locations if they haven't been. */ |
10423 | ||
10424 | static void | |
10425 | download_tracepoint_locations (void) | |
10426 | { | |
10427 | struct bp_location *bl, **blp_tmp; | |
10428 | struct cleanup *old_chain; | |
10429 | ||
10430 | if (!target_can_download_tracepoint ()) | |
10431 | return; | |
10432 | ||
10433 | old_chain = save_current_space_and_thread (); | |
10434 | ||
10435 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10436 | { | |
10437 | struct tracepoint *t; | |
10438 | ||
10439 | if (!is_tracepoint (bl->owner)) | |
10440 | continue; | |
10441 | ||
10442 | if ((bl->owner->type == bp_fast_tracepoint | |
10443 | ? !may_insert_fast_tracepoints | |
10444 | : !may_insert_tracepoints)) | |
10445 | continue; | |
10446 | ||
10447 | /* In tracepoint, locations are _never_ duplicated, so | |
10448 | should_be_inserted is equivalent to | |
10449 | unduplicated_should_be_inserted. */ | |
10450 | if (!should_be_inserted (bl) || bl->inserted) | |
10451 | continue; | |
10452 | ||
10453 | switch_to_program_space_and_thread (bl->pspace); | |
10454 | ||
10455 | target_download_tracepoint (bl); | |
10456 | ||
10457 | bl->inserted = 1; | |
10458 | t = (struct tracepoint *) bl->owner; | |
10459 | t->number_on_target = bl->owner->number; | |
10460 | } | |
10461 | ||
10462 | do_cleanups (old_chain); | |
10463 | } | |
10464 | ||
934709f0 PW |
10465 | /* Swap the insertion/duplication state between two locations. */ |
10466 | ||
10467 | static void | |
10468 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10469 | { | |
10470 | const int left_inserted = left->inserted; | |
10471 | const int left_duplicate = left->duplicate; | |
10472 | const struct bp_target_info left_target_info = left->target_info; | |
10473 | ||
1e4d1764 YQ |
10474 | /* Locations of tracepoints can never be duplicated. */ |
10475 | if (is_tracepoint (left->owner)) | |
10476 | gdb_assert (!left->duplicate); | |
10477 | if (is_tracepoint (right->owner)) | |
10478 | gdb_assert (!right->duplicate); | |
10479 | ||
934709f0 PW |
10480 | left->inserted = right->inserted; |
10481 | left->duplicate = right->duplicate; | |
10482 | left->target_info = right->target_info; | |
10483 | right->inserted = left_inserted; | |
10484 | right->duplicate = left_duplicate; | |
10485 | right->target_info = left_target_info; | |
10486 | } | |
10487 | ||
4cd9bd08 | 10488 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10489 | into the inferior, only remove already-inserted locations that no |
10490 | longer should be inserted. Functions that delete a breakpoint or | |
10491 | breakpoints should pass false, so that deleting a breakpoint | |
10492 | doesn't have the side effect of inserting the locations of other | |
10493 | breakpoints that are marked not-inserted, but should_be_inserted | |
10494 | returns true on them. | |
10495 | ||
10496 | This behaviour is useful is situations close to tear-down -- e.g., | |
10497 | after an exec, while the target still has execution, but breakpoint | |
10498 | shadows of the previous executable image should *NOT* be restored | |
10499 | to the new image; or before detaching, where the target still has | |
10500 | execution and wants to delete breakpoints from GDB's lists, and all | |
10501 | breakpoints had already been removed from the inferior. */ | |
10502 | ||
0d381245 | 10503 | static void |
b60e7edf | 10504 | update_global_location_list (int should_insert) |
0d381245 | 10505 | { |
74960c60 | 10506 | struct breakpoint *b; |
876fa593 | 10507 | struct bp_location **locp, *loc; |
f7545552 TT |
10508 | struct cleanup *cleanups; |
10509 | ||
2d134ed3 PA |
10510 | /* Used in the duplicates detection below. When iterating over all |
10511 | bp_locations, points to the first bp_location of a given address. | |
10512 | Breakpoints and watchpoints of different types are never | |
10513 | duplicates of each other. Keep one pointer for each type of | |
10514 | breakpoint/watchpoint, so we only need to loop over all locations | |
10515 | once. */ | |
10516 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10517 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10518 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10519 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10520 | |
4a64f543 MS |
10521 | /* Saved former bp_location array which we compare against the newly |
10522 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10523 | struct bp_location **old_location, **old_locp; |
10524 | unsigned old_location_count; | |
10525 | ||
10526 | old_location = bp_location; | |
10527 | old_location_count = bp_location_count; | |
10528 | bp_location = NULL; | |
10529 | bp_location_count = 0; | |
10530 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10531 | |
74960c60 | 10532 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10533 | for (loc = b->loc; loc; loc = loc->next) |
10534 | bp_location_count++; | |
10535 | ||
10536 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10537 | locp = bp_location; | |
10538 | ALL_BREAKPOINTS (b) | |
10539 | for (loc = b->loc; loc; loc = loc->next) | |
10540 | *locp++ = loc; | |
10541 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10542 | bp_location_compare); |
876fa593 JK |
10543 | |
10544 | bp_location_target_extensions_update (); | |
74960c60 | 10545 | |
4a64f543 MS |
10546 | /* Identify bp_location instances that are no longer present in the |
10547 | new list, and therefore should be freed. Note that it's not | |
10548 | necessary that those locations should be removed from inferior -- | |
10549 | if there's another location at the same address (previously | |
10550 | marked as duplicate), we don't need to remove/insert the | |
10551 | location. | |
876fa593 | 10552 | |
4a64f543 MS |
10553 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10554 | and former bp_location array state respectively. */ | |
876fa593 JK |
10555 | |
10556 | locp = bp_location; | |
10557 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10558 | old_locp++) | |
74960c60 | 10559 | { |
876fa593 | 10560 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10561 | struct bp_location **loc2p; |
876fa593 | 10562 | |
e5dd4106 | 10563 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 10564 | not, we have to free it. */ |
c7d46a38 | 10565 | int found_object = 0; |
20874c92 VP |
10566 | /* Tells if the location should remain inserted in the target. */ |
10567 | int keep_in_target = 0; | |
10568 | int removed = 0; | |
876fa593 | 10569 | |
4a64f543 MS |
10570 | /* Skip LOCP entries which will definitely never be needed. |
10571 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10572 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10573 | && (*locp)->address < old_loc->address) |
876fa593 | 10574 | locp++; |
c7d46a38 PA |
10575 | |
10576 | for (loc2p = locp; | |
10577 | (loc2p < bp_location + bp_location_count | |
10578 | && (*loc2p)->address == old_loc->address); | |
10579 | loc2p++) | |
10580 | { | |
10581 | if (*loc2p == old_loc) | |
10582 | { | |
10583 | found_object = 1; | |
10584 | break; | |
10585 | } | |
10586 | } | |
74960c60 | 10587 | |
4a64f543 MS |
10588 | /* If this location is no longer present, and inserted, look if |
10589 | there's maybe a new location at the same address. If so, | |
10590 | mark that one inserted, and don't remove this one. This is | |
10591 | needed so that we don't have a time window where a breakpoint | |
10592 | at certain location is not inserted. */ | |
74960c60 | 10593 | |
876fa593 | 10594 | if (old_loc->inserted) |
0d381245 | 10595 | { |
4a64f543 MS |
10596 | /* If the location is inserted now, we might have to remove |
10597 | it. */ | |
74960c60 | 10598 | |
876fa593 | 10599 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10600 | { |
4a64f543 MS |
10601 | /* The location is still present in the location list, |
10602 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10603 | keep_in_target = 1; |
74960c60 VP |
10604 | } |
10605 | else | |
10606 | { | |
4a64f543 MS |
10607 | /* The location is either no longer present, or got |
10608 | disabled. See if there's another location at the | |
10609 | same address, in which case we don't need to remove | |
10610 | this one from the target. */ | |
876fa593 | 10611 | |
2bdf28a0 | 10612 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10613 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10614 | { | |
876fa593 | 10615 | for (loc2p = locp; |
c7d46a38 PA |
10616 | (loc2p < bp_location + bp_location_count |
10617 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10618 | loc2p++) |
10619 | { | |
10620 | struct bp_location *loc2 = *loc2p; | |
10621 | ||
2d134ed3 | 10622 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 10623 | { |
85d721b8 PA |
10624 | /* Read watchpoint locations are switched to |
10625 | access watchpoints, if the former are not | |
10626 | supported, but the latter are. */ | |
10627 | if (is_hardware_watchpoint (old_loc->owner)) | |
10628 | { | |
10629 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10630 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10631 | } | |
10632 | ||
934709f0 PW |
10633 | /* loc2 is a duplicated location. We need to check |
10634 | if it should be inserted in case it will be | |
10635 | unduplicated. */ | |
10636 | if (loc2 != old_loc | |
10637 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 10638 | { |
934709f0 | 10639 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
10640 | keep_in_target = 1; |
10641 | break; | |
10642 | } | |
876fa593 JK |
10643 | } |
10644 | } | |
10645 | } | |
74960c60 VP |
10646 | } |
10647 | ||
20874c92 VP |
10648 | if (!keep_in_target) |
10649 | { | |
876fa593 | 10650 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10651 | { |
4a64f543 MS |
10652 | /* This is just about all we can do. We could keep |
10653 | this location on the global list, and try to | |
10654 | remove it next time, but there's no particular | |
10655 | reason why we will succeed next time. | |
20874c92 | 10656 | |
4a64f543 MS |
10657 | Note that at this point, old_loc->owner is still |
10658 | valid, as delete_breakpoint frees the breakpoint | |
10659 | only after calling us. */ | |
3e43a32a MS |
10660 | printf_filtered (_("warning: Error removing " |
10661 | "breakpoint %d\n"), | |
876fa593 | 10662 | old_loc->owner->number); |
20874c92 VP |
10663 | } |
10664 | removed = 1; | |
10665 | } | |
0d381245 | 10666 | } |
74960c60 VP |
10667 | |
10668 | if (!found_object) | |
1c5cfe86 | 10669 | { |
db82e815 PA |
10670 | if (removed && non_stop |
10671 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10672 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10673 | { |
db82e815 PA |
10674 | /* This location was removed from the target. In |
10675 | non-stop mode, a race condition is possible where | |
10676 | we've removed a breakpoint, but stop events for that | |
10677 | breakpoint are already queued and will arrive later. | |
10678 | We apply an heuristic to be able to distinguish such | |
10679 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10680 | breakpoint location for a bit, and will retire it | |
10681 | after we see some number of events. The theory here | |
10682 | is that reporting of events should, "on the average", | |
10683 | be fair, so after a while we'll see events from all | |
10684 | threads that have anything of interest, and no longer | |
10685 | need to keep this breakpoint location around. We | |
10686 | don't hold locations forever so to reduce chances of | |
10687 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10688 | SIGTRAP. | |
10689 | ||
10690 | The heuristic failing can be disastrous on | |
10691 | decr_pc_after_break targets. | |
10692 | ||
10693 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10694 | if we fail to recognize a late breakpoint SIGTRAP, | |
10695 | because events_till_retirement has reached 0 too | |
10696 | soon, we'll fail to do the PC adjustment, and report | |
10697 | a random SIGTRAP to the user. When the user resumes | |
10698 | the inferior, it will most likely immediately crash | |
2dec564e | 10699 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10700 | corrupted, because of being resumed e.g., in the |
10701 | middle of a multi-byte instruction, or skipped a | |
10702 | one-byte instruction. This was actually seen happen | |
10703 | on native x86-linux, and should be less rare on | |
10704 | targets that do not support new thread events, like | |
10705 | remote, due to the heuristic depending on | |
10706 | thread_count. | |
10707 | ||
10708 | Mistaking a random SIGTRAP for a breakpoint trap | |
10709 | causes similar symptoms (PC adjustment applied when | |
10710 | it shouldn't), but then again, playing with SIGTRAPs | |
10711 | behind the debugger's back is asking for trouble. | |
10712 | ||
10713 | Since hardware watchpoint traps are always | |
10714 | distinguishable from other traps, so we don't need to | |
10715 | apply keep hardware watchpoint moribund locations | |
10716 | around. We simply always ignore hardware watchpoint | |
10717 | traps we can no longer explain. */ | |
10718 | ||
876fa593 JK |
10719 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10720 | old_loc->owner = NULL; | |
20874c92 | 10721 | |
876fa593 | 10722 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10723 | } |
10724 | else | |
f431efe5 PA |
10725 | { |
10726 | old_loc->owner = NULL; | |
10727 | decref_bp_location (&old_loc); | |
10728 | } | |
20874c92 | 10729 | } |
74960c60 | 10730 | } |
1c5cfe86 | 10731 | |
348d480f PA |
10732 | /* Rescan breakpoints at the same address and section, marking the |
10733 | first one as "first" and any others as "duplicates". This is so | |
10734 | that the bpt instruction is only inserted once. If we have a | |
10735 | permanent breakpoint at the same place as BPT, make that one the | |
10736 | official one, and the rest as duplicates. Permanent breakpoints | |
10737 | are sorted first for the same address. | |
10738 | ||
10739 | Do the same for hardware watchpoints, but also considering the | |
10740 | watchpoint's type (regular/access/read) and length. */ | |
10741 | ||
10742 | bp_loc_first = NULL; | |
10743 | wp_loc_first = NULL; | |
10744 | awp_loc_first = NULL; | |
10745 | rwp_loc_first = NULL; | |
10746 | ALL_BP_LOCATIONS (loc, locp) | |
10747 | { | |
10748 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
10749 | non-NULL. */ | |
10750 | struct breakpoint *b = loc->owner; | |
10751 | struct bp_location **loc_first_p; | |
10752 | ||
10753 | if (b->enable_state == bp_disabled | |
10754 | || b->enable_state == bp_call_disabled | |
10755 | || b->enable_state == bp_startup_disabled | |
10756 | || !loc->enabled | |
10757 | || loc->shlib_disabled | |
10758 | || !breakpoint_address_is_meaningful (b) | |
1e4d1764 YQ |
10759 | /* Don't detect duplicate for tracepoint locations because they are |
10760 | never duplicated. See the comments in field `duplicate' of | |
10761 | `struct bp_location'. */ | |
348d480f PA |
10762 | || is_tracepoint (b)) |
10763 | continue; | |
10764 | ||
10765 | /* Permanent breakpoint should always be inserted. */ | |
10766 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10767 | internal_error (__FILE__, __LINE__, | |
10768 | _("allegedly permanent breakpoint is not " | |
10769 | "actually inserted")); | |
10770 | ||
10771 | if (b->type == bp_hardware_watchpoint) | |
10772 | loc_first_p = &wp_loc_first; | |
10773 | else if (b->type == bp_read_watchpoint) | |
10774 | loc_first_p = &rwp_loc_first; | |
10775 | else if (b->type == bp_access_watchpoint) | |
10776 | loc_first_p = &awp_loc_first; | |
10777 | else | |
10778 | loc_first_p = &bp_loc_first; | |
10779 | ||
10780 | if (*loc_first_p == NULL | |
10781 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10782 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
10783 | { | |
10784 | *loc_first_p = loc; | |
10785 | loc->duplicate = 0; | |
10786 | continue; | |
10787 | } | |
10788 | ||
934709f0 PW |
10789 | |
10790 | /* This and the above ensure the invariant that the first location | |
10791 | is not duplicated, and is the inserted one. | |
10792 | All following are marked as duplicated, and are not inserted. */ | |
10793 | if (loc->inserted) | |
10794 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
10795 | loc->duplicate = 1; |
10796 | ||
10797 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted | |
10798 | && b->enable_state != bp_permanent) | |
10799 | internal_error (__FILE__, __LINE__, | |
10800 | _("another breakpoint was inserted on top of " | |
10801 | "a permanent breakpoint")); | |
10802 | } | |
10803 | ||
10804 | if (breakpoints_always_inserted_mode () && should_insert | |
10805 | && (have_live_inferiors () | |
10806 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
10807 | insert_breakpoint_locations (); | |
10808 | ||
1e4d1764 YQ |
10809 | if (should_insert) |
10810 | download_tracepoint_locations (); | |
10811 | ||
348d480f PA |
10812 | do_cleanups (cleanups); |
10813 | } | |
10814 | ||
10815 | void | |
10816 | breakpoint_retire_moribund (void) | |
10817 | { | |
10818 | struct bp_location *loc; | |
10819 | int ix; | |
10820 | ||
10821 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10822 | if (--(loc->events_till_retirement) == 0) | |
10823 | { | |
10824 | decref_bp_location (&loc); | |
10825 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
10826 | --ix; | |
10827 | } | |
10828 | } | |
10829 | ||
10830 | static void | |
10831 | update_global_location_list_nothrow (int inserting) | |
10832 | { | |
10833 | struct gdb_exception e; | |
10834 | ||
10835 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10836 | update_global_location_list (inserting); | |
10837 | } | |
10838 | ||
10839 | /* Clear BKP from a BPS. */ | |
10840 | ||
10841 | static void | |
10842 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
10843 | { | |
10844 | bpstat bs; | |
10845 | ||
10846 | for (bs = bps; bs; bs = bs->next) | |
10847 | if (bs->breakpoint_at == bpt) | |
10848 | { | |
10849 | bs->breakpoint_at = NULL; | |
10850 | bs->old_val = NULL; | |
10851 | /* bs->commands will be freed later. */ | |
10852 | } | |
10853 | } | |
10854 | ||
10855 | /* Callback for iterate_over_threads. */ | |
10856 | static int | |
10857 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
10858 | { | |
10859 | struct breakpoint *bpt = data; | |
10860 | ||
10861 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
10862 | return 0; | |
10863 | } | |
10864 | ||
10865 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
10866 | callbacks. */ | |
10867 | ||
10868 | static void | |
10869 | say_where (struct breakpoint *b) | |
10870 | { | |
79a45e25 | 10871 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10872 | struct value_print_options opts; |
10873 | ||
10874 | get_user_print_options (&opts); | |
10875 | ||
10876 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
10877 | single string. */ | |
10878 | if (b->loc == NULL) | |
10879 | { | |
10880 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
10881 | } | |
10882 | else | |
10883 | { | |
10884 | if (opts.addressprint || b->source_file == NULL) | |
10885 | { | |
10886 | printf_filtered (" at "); | |
10887 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
10888 | gdb_stdout); | |
10889 | } | |
10890 | if (b->source_file) | |
10891 | printf_filtered (": file %s, line %d.", | |
10892 | b->source_file, b->line_number); | |
10893 | ||
10894 | if (b->loc->next) | |
10895 | { | |
10896 | struct bp_location *loc = b->loc; | |
10897 | int n = 0; | |
10898 | for (; loc; loc = loc->next) | |
10899 | ++n; | |
10900 | printf_filtered (" (%d locations)", n); | |
10901 | } | |
10902 | } | |
10903 | } | |
10904 | ||
348d480f PA |
10905 | /* Default bp_location_ops methods. */ |
10906 | ||
10907 | static void | |
10908 | bp_location_dtor (struct bp_location *self) | |
10909 | { | |
10910 | xfree (self->cond); | |
10911 | xfree (self->function_name); | |
10912 | } | |
10913 | ||
10914 | static const struct bp_location_ops bp_location_ops = | |
10915 | { | |
10916 | bp_location_dtor | |
10917 | }; | |
10918 | ||
2060206e PA |
10919 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
10920 | inherit from. */ | |
348d480f | 10921 | |
2060206e PA |
10922 | static void |
10923 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
10924 | { |
10925 | decref_counted_command_line (&self->commands); | |
10926 | xfree (self->cond_string); | |
348d480f PA |
10927 | xfree (self->addr_string); |
10928 | xfree (self->addr_string_range_end); | |
348d480f PA |
10929 | xfree (self->source_file); |
10930 | } | |
10931 | ||
2060206e PA |
10932 | static struct bp_location * |
10933 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
10934 | { |
10935 | struct bp_location *loc; | |
10936 | ||
10937 | loc = XNEW (struct bp_location); | |
10938 | init_bp_location (loc, &bp_location_ops, self); | |
10939 | return loc; | |
10940 | } | |
10941 | ||
2060206e PA |
10942 | static void |
10943 | base_breakpoint_re_set (struct breakpoint *b) | |
10944 | { | |
10945 | /* Nothing to re-set. */ | |
10946 | } | |
10947 | ||
10948 | #define internal_error_pure_virtual_called() \ | |
10949 | gdb_assert_not_reached ("pure virtual function called") | |
10950 | ||
10951 | static int | |
10952 | base_breakpoint_insert_location (struct bp_location *bl) | |
10953 | { | |
10954 | internal_error_pure_virtual_called (); | |
10955 | } | |
10956 | ||
10957 | static int | |
10958 | base_breakpoint_remove_location (struct bp_location *bl) | |
10959 | { | |
10960 | internal_error_pure_virtual_called (); | |
10961 | } | |
10962 | ||
10963 | static int | |
10964 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
10965 | struct address_space *aspace, | |
10966 | CORE_ADDR bp_addr) | |
10967 | { | |
10968 | internal_error_pure_virtual_called (); | |
10969 | } | |
10970 | ||
10971 | static void | |
10972 | base_breakpoint_check_status (bpstat bs) | |
10973 | { | |
10974 | /* Always stop. */ | |
10975 | } | |
10976 | ||
10977 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
10978 | errors. */ | |
10979 | ||
10980 | static int | |
10981 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
10982 | { | |
10983 | internal_error_pure_virtual_called (); | |
10984 | } | |
10985 | ||
10986 | /* A "resources_needed" breakpoint_ops method that just internal | |
10987 | errors. */ | |
10988 | ||
10989 | static int | |
10990 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
10991 | { | |
10992 | internal_error_pure_virtual_called (); | |
10993 | } | |
10994 | ||
10995 | static enum print_stop_action | |
10996 | base_breakpoint_print_it (bpstat bs) | |
10997 | { | |
10998 | internal_error_pure_virtual_called (); | |
10999 | } | |
11000 | ||
11001 | static void | |
11002 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
11003 | struct ui_out *uiout) | |
11004 | { | |
11005 | /* nothing */ | |
11006 | } | |
11007 | ||
11008 | static void | |
11009 | base_breakpoint_print_mention (struct breakpoint *b) | |
11010 | { | |
11011 | internal_error_pure_virtual_called (); | |
11012 | } | |
11013 | ||
11014 | static void | |
11015 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
11016 | { | |
11017 | internal_error_pure_virtual_called (); | |
11018 | } | |
11019 | ||
11020 | static struct breakpoint_ops base_breakpoint_ops = | |
11021 | { | |
11022 | base_breakpoint_dtor, | |
11023 | base_breakpoint_allocate_location, | |
11024 | base_breakpoint_re_set, | |
11025 | base_breakpoint_insert_location, | |
11026 | base_breakpoint_remove_location, | |
11027 | base_breakpoint_breakpoint_hit, | |
11028 | base_breakpoint_check_status, | |
11029 | base_breakpoint_resources_needed, | |
11030 | base_breakpoint_works_in_software_mode, | |
11031 | base_breakpoint_print_it, | |
11032 | NULL, | |
11033 | base_breakpoint_print_one_detail, | |
11034 | base_breakpoint_print_mention, | |
11035 | base_breakpoint_print_recreate | |
11036 | }; | |
11037 | ||
11038 | /* Default breakpoint_ops methods. */ | |
11039 | ||
11040 | static void | |
348d480f PA |
11041 | bkpt_re_set (struct breakpoint *b) |
11042 | { | |
06edf0c0 PA |
11043 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
11044 | if (b->enable_state == bp_startup_disabled) | |
11045 | return; | |
348d480f | 11046 | |
06edf0c0 PA |
11047 | /* FIXME: is this still reachable? */ |
11048 | if (b->addr_string == NULL) | |
11049 | { | |
11050 | /* Anything without a string can't be re-set. */ | |
348d480f | 11051 | delete_breakpoint (b); |
06edf0c0 | 11052 | return; |
348d480f | 11053 | } |
06edf0c0 PA |
11054 | |
11055 | breakpoint_re_set_default (b); | |
348d480f PA |
11056 | } |
11057 | ||
2060206e | 11058 | static int |
348d480f PA |
11059 | bkpt_insert_location (struct bp_location *bl) |
11060 | { | |
11061 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
11062 | return target_insert_hw_breakpoint (bl->gdbarch, | |
11063 | &bl->target_info); | |
11064 | else | |
11065 | return target_insert_breakpoint (bl->gdbarch, | |
11066 | &bl->target_info); | |
11067 | } | |
11068 | ||
2060206e | 11069 | static int |
348d480f PA |
11070 | bkpt_remove_location (struct bp_location *bl) |
11071 | { | |
11072 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
11073 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11074 | else | |
11075 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
11076 | } | |
11077 | ||
2060206e | 11078 | static int |
348d480f PA |
11079 | bkpt_breakpoint_hit (const struct bp_location *bl, |
11080 | struct address_space *aspace, CORE_ADDR bp_addr) | |
11081 | { | |
11082 | struct breakpoint *b = bl->owner; | |
11083 | ||
11084 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, | |
11085 | aspace, bp_addr)) | |
11086 | return 0; | |
11087 | ||
11088 | if (overlay_debugging /* unmapped overlay section */ | |
11089 | && section_is_overlay (bl->section) | |
11090 | && !section_is_mapped (bl->section)) | |
11091 | return 0; | |
11092 | ||
11093 | return 1; | |
11094 | } | |
11095 | ||
2060206e | 11096 | static int |
348d480f PA |
11097 | bkpt_resources_needed (const struct bp_location *bl) |
11098 | { | |
11099 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
11100 | ||
11101 | return 1; | |
11102 | } | |
11103 | ||
2060206e | 11104 | static enum print_stop_action |
348d480f PA |
11105 | bkpt_print_it (bpstat bs) |
11106 | { | |
348d480f PA |
11107 | struct breakpoint *b; |
11108 | const struct bp_location *bl; | |
001c8c33 | 11109 | int bp_temp; |
79a45e25 | 11110 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11111 | |
11112 | gdb_assert (bs->bp_location_at != NULL); | |
11113 | ||
11114 | bl = bs->bp_location_at; | |
11115 | b = bs->breakpoint_at; | |
11116 | ||
001c8c33 PA |
11117 | bp_temp = b->disposition == disp_del; |
11118 | if (bl->address != bl->requested_address) | |
11119 | breakpoint_adjustment_warning (bl->requested_address, | |
11120 | bl->address, | |
11121 | b->number, 1); | |
11122 | annotate_breakpoint (b->number); | |
11123 | if (bp_temp) | |
11124 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
11125 | else | |
11126 | ui_out_text (uiout, "\nBreakpoint "); | |
11127 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 11128 | { |
001c8c33 PA |
11129 | ui_out_field_string (uiout, "reason", |
11130 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11131 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 11132 | } |
001c8c33 PA |
11133 | ui_out_field_int (uiout, "bkptno", b->number); |
11134 | ui_out_text (uiout, ", "); | |
06edf0c0 | 11135 | |
001c8c33 | 11136 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11137 | } |
11138 | ||
2060206e | 11139 | static void |
06edf0c0 PA |
11140 | bkpt_print_mention (struct breakpoint *b) |
11141 | { | |
79a45e25 | 11142 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
11143 | return; |
11144 | ||
11145 | switch (b->type) | |
11146 | { | |
11147 | case bp_breakpoint: | |
11148 | case bp_gnu_ifunc_resolver: | |
11149 | if (b->disposition == disp_del) | |
11150 | printf_filtered (_("Temporary breakpoint")); | |
11151 | else | |
11152 | printf_filtered (_("Breakpoint")); | |
11153 | printf_filtered (_(" %d"), b->number); | |
11154 | if (b->type == bp_gnu_ifunc_resolver) | |
11155 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
11156 | break; | |
11157 | case bp_hardware_breakpoint: | |
11158 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
11159 | break; | |
11160 | } | |
11161 | ||
11162 | say_where (b); | |
11163 | } | |
11164 | ||
2060206e | 11165 | static void |
06edf0c0 PA |
11166 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
11167 | { | |
11168 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11169 | fprintf_unfiltered (fp, "tbreak"); | |
11170 | else if (tp->type == bp_breakpoint) | |
11171 | fprintf_unfiltered (fp, "break"); | |
11172 | else if (tp->type == bp_hardware_breakpoint | |
11173 | && tp->disposition == disp_del) | |
11174 | fprintf_unfiltered (fp, "thbreak"); | |
11175 | else if (tp->type == bp_hardware_breakpoint) | |
11176 | fprintf_unfiltered (fp, "hbreak"); | |
11177 | else | |
11178 | internal_error (__FILE__, __LINE__, | |
11179 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11180 | ||
2060206e | 11181 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 11182 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
11183 | } |
11184 | ||
06edf0c0 PA |
11185 | /* Virtual table for internal breakpoints. */ |
11186 | ||
11187 | static void | |
11188 | internal_bkpt_re_set (struct breakpoint *b) | |
11189 | { | |
11190 | switch (b->type) | |
11191 | { | |
11192 | /* Delete overlay event and longjmp master breakpoints; they | |
11193 | will be reset later by breakpoint_re_set. */ | |
11194 | case bp_overlay_event: | |
11195 | case bp_longjmp_master: | |
11196 | case bp_std_terminate_master: | |
11197 | case bp_exception_master: | |
11198 | delete_breakpoint (b); | |
11199 | break; | |
11200 | ||
11201 | /* This breakpoint is special, it's set up when the inferior | |
11202 | starts and we really don't want to touch it. */ | |
11203 | case bp_shlib_event: | |
11204 | ||
11205 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11206 | it is set up, we do not want to touch it. */ | |
11207 | case bp_thread_event: | |
11208 | break; | |
11209 | } | |
11210 | } | |
11211 | ||
11212 | static void | |
11213 | internal_bkpt_check_status (bpstat bs) | |
11214 | { | |
11215 | /* We do not stop for these. */ | |
11216 | bs->stop = 0; | |
11217 | } | |
11218 | ||
11219 | static enum print_stop_action | |
11220 | internal_bkpt_print_it (bpstat bs) | |
11221 | { | |
36dfb11c | 11222 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 11223 | struct breakpoint *b; |
06edf0c0 | 11224 | |
06edf0c0 PA |
11225 | b = bs->breakpoint_at; |
11226 | ||
06edf0c0 PA |
11227 | switch (b->type) |
11228 | { | |
348d480f PA |
11229 | case bp_shlib_event: |
11230 | /* Did we stop because the user set the stop_on_solib_events | |
11231 | variable? (If so, we report this as a generic, "Stopped due | |
11232 | to shlib event" message.) */ | |
36dfb11c TT |
11233 | ui_out_text (uiout, _("Stopped due to shared library event\n")); |
11234 | if (ui_out_is_mi_like_p (uiout)) | |
11235 | ui_out_field_string (uiout, "reason", | |
11236 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
348d480f PA |
11237 | break; |
11238 | ||
11239 | case bp_thread_event: | |
11240 | /* Not sure how we will get here. | |
11241 | GDB should not stop for these breakpoints. */ | |
11242 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11243 | break; |
11244 | ||
11245 | case bp_overlay_event: | |
11246 | /* By analogy with the thread event, GDB should not stop for these. */ | |
11247 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11248 | break; |
11249 | ||
11250 | case bp_longjmp_master: | |
11251 | /* These should never be enabled. */ | |
11252 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11253 | break; |
11254 | ||
11255 | case bp_std_terminate_master: | |
11256 | /* These should never be enabled. */ | |
11257 | printf_filtered (_("std::terminate Master Breakpoint: " | |
11258 | "gdb should not stop!\n")); | |
348d480f PA |
11259 | break; |
11260 | ||
11261 | case bp_exception_master: | |
11262 | /* These should never be enabled. */ | |
11263 | printf_filtered (_("Exception Master Breakpoint: " | |
11264 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11265 | break; |
11266 | } | |
11267 | ||
001c8c33 | 11268 | return PRINT_NOTHING; |
06edf0c0 PA |
11269 | } |
11270 | ||
11271 | static void | |
11272 | internal_bkpt_print_mention (struct breakpoint *b) | |
11273 | { | |
11274 | /* Nothing to mention. These breakpoints are internal. */ | |
11275 | } | |
11276 | ||
06edf0c0 PA |
11277 | /* Virtual table for momentary breakpoints */ |
11278 | ||
11279 | static void | |
11280 | momentary_bkpt_re_set (struct breakpoint *b) | |
11281 | { | |
11282 | /* Keep temporary breakpoints, which can be encountered when we step | |
11283 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
11284 | Otherwise these should have been blown away via the cleanup chain | |
11285 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11286 | } | |
11287 | ||
11288 | static void | |
11289 | momentary_bkpt_check_status (bpstat bs) | |
11290 | { | |
11291 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11292 | } | |
11293 | ||
11294 | static enum print_stop_action | |
11295 | momentary_bkpt_print_it (bpstat bs) | |
11296 | { | |
79a45e25 PA |
11297 | struct ui_out *uiout = current_uiout; |
11298 | ||
001c8c33 | 11299 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 11300 | { |
001c8c33 | 11301 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 11302 | |
001c8c33 PA |
11303 | switch (b->type) |
11304 | { | |
11305 | case bp_finish: | |
11306 | ui_out_field_string | |
11307 | (uiout, "reason", | |
11308 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
11309 | break; | |
348d480f | 11310 | |
001c8c33 PA |
11311 | case bp_until: |
11312 | ui_out_field_string | |
11313 | (uiout, "reason", | |
11314 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
11315 | break; | |
11316 | } | |
348d480f PA |
11317 | } |
11318 | ||
001c8c33 | 11319 | return PRINT_UNKNOWN; |
348d480f PA |
11320 | } |
11321 | ||
06edf0c0 PA |
11322 | static void |
11323 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 11324 | { |
06edf0c0 | 11325 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11326 | } |
11327 | ||
348d480f | 11328 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 11329 | |
348d480f PA |
11330 | static void |
11331 | tracepoint_re_set (struct breakpoint *b) | |
11332 | { | |
11333 | breakpoint_re_set_default (b); | |
11334 | } | |
876fa593 | 11335 | |
348d480f PA |
11336 | static int |
11337 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
11338 | struct address_space *aspace, CORE_ADDR bp_addr) | |
11339 | { | |
11340 | /* By definition, the inferior does not report stops at | |
11341 | tracepoints. */ | |
11342 | return 0; | |
74960c60 VP |
11343 | } |
11344 | ||
11345 | static void | |
348d480f PA |
11346 | tracepoint_print_one_detail (const struct breakpoint *self, |
11347 | struct ui_out *uiout) | |
74960c60 | 11348 | { |
d9b3f62e PA |
11349 | struct tracepoint *tp = (struct tracepoint *) self; |
11350 | if (tp->static_trace_marker_id) | |
348d480f PA |
11351 | { |
11352 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 11353 | |
348d480f PA |
11354 | ui_out_text (uiout, "\tmarker id is "); |
11355 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 11356 | tp->static_trace_marker_id); |
348d480f PA |
11357 | ui_out_text (uiout, "\n"); |
11358 | } | |
0d381245 VP |
11359 | } |
11360 | ||
a474d7c2 | 11361 | static void |
348d480f | 11362 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 11363 | { |
79a45e25 | 11364 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 11365 | return; |
cc59ec59 | 11366 | |
348d480f PA |
11367 | switch (b->type) |
11368 | { | |
11369 | case bp_tracepoint: | |
11370 | printf_filtered (_("Tracepoint")); | |
11371 | printf_filtered (_(" %d"), b->number); | |
11372 | break; | |
11373 | case bp_fast_tracepoint: | |
11374 | printf_filtered (_("Fast tracepoint")); | |
11375 | printf_filtered (_(" %d"), b->number); | |
11376 | break; | |
11377 | case bp_static_tracepoint: | |
11378 | printf_filtered (_("Static tracepoint")); | |
11379 | printf_filtered (_(" %d"), b->number); | |
11380 | break; | |
11381 | default: | |
11382 | internal_error (__FILE__, __LINE__, | |
11383 | _("unhandled tracepoint type %d"), (int) b->type); | |
11384 | } | |
11385 | ||
11386 | say_where (b); | |
a474d7c2 PA |
11387 | } |
11388 | ||
348d480f | 11389 | static void |
d9b3f62e | 11390 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 11391 | { |
d9b3f62e PA |
11392 | struct tracepoint *tp = (struct tracepoint *) self; |
11393 | ||
11394 | if (self->type == bp_fast_tracepoint) | |
348d480f | 11395 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 11396 | if (self->type == bp_static_tracepoint) |
348d480f | 11397 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 11398 | else if (self->type == bp_tracepoint) |
348d480f PA |
11399 | fprintf_unfiltered (fp, "trace"); |
11400 | else | |
11401 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 11402 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 11403 | |
d9b3f62e PA |
11404 | fprintf_unfiltered (fp, " %s", self->addr_string); |
11405 | print_recreate_thread (self, fp); | |
11406 | ||
11407 | if (tp->pass_count) | |
11408 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
11409 | } |
11410 | ||
2060206e | 11411 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 11412 | |
53a5351d | 11413 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 11414 | structures. */ |
c906108c SS |
11415 | |
11416 | void | |
fba45db2 | 11417 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 11418 | { |
52f0bd74 | 11419 | struct breakpoint *b; |
c906108c | 11420 | |
8a3fe4f8 | 11421 | gdb_assert (bpt != NULL); |
c906108c | 11422 | |
4a64f543 MS |
11423 | /* Has this bp already been deleted? This can happen because |
11424 | multiple lists can hold pointers to bp's. bpstat lists are | |
11425 | especial culprits. | |
11426 | ||
11427 | One example of this happening is a watchpoint's scope bp. When | |
11428 | the scope bp triggers, we notice that the watchpoint is out of | |
11429 | scope, and delete it. We also delete its scope bp. But the | |
11430 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
11431 | That bpstat is then checked for auto-deleting bp's, which are | |
11432 | deleted. | |
11433 | ||
11434 | A real solution to this problem might involve reference counts in | |
11435 | bp's, and/or giving them pointers back to their referencing | |
11436 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
11437 | storage when no more references were extent. A cheaper bandaid | |
11438 | was chosen. */ | |
c906108c SS |
11439 | if (bpt->type == bp_none) |
11440 | return; | |
11441 | ||
4a64f543 MS |
11442 | /* At least avoid this stale reference until the reference counting |
11443 | of breakpoints gets resolved. */ | |
d0fb5eae | 11444 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 11445 | { |
d0fb5eae | 11446 | struct breakpoint *related; |
3a5c3e22 | 11447 | struct watchpoint *w; |
d0fb5eae JK |
11448 | |
11449 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 11450 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 11451 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
11452 | w = (struct watchpoint *) bpt; |
11453 | else | |
11454 | w = NULL; | |
11455 | if (w != NULL) | |
11456 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
11457 | |
11458 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
11459 | for (related = bpt; related->related_breakpoint != bpt; | |
11460 | related = related->related_breakpoint); | |
11461 | related->related_breakpoint = bpt->related_breakpoint; | |
11462 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
11463 | } |
11464 | ||
a9634178 TJB |
11465 | /* watch_command_1 creates a watchpoint but only sets its number if |
11466 | update_watchpoint succeeds in creating its bp_locations. If there's | |
11467 | a problem in that process, we'll be asked to delete the half-created | |
11468 | watchpoint. In that case, don't announce the deletion. */ | |
11469 | if (bpt->number) | |
11470 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 11471 | |
c906108c SS |
11472 | if (breakpoint_chain == bpt) |
11473 | breakpoint_chain = bpt->next; | |
11474 | ||
c906108c SS |
11475 | ALL_BREAKPOINTS (b) |
11476 | if (b->next == bpt) | |
c5aa993b JM |
11477 | { |
11478 | b->next = bpt->next; | |
11479 | break; | |
11480 | } | |
c906108c | 11481 | |
f431efe5 PA |
11482 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
11483 | been freed. */ | |
11484 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 11485 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
11486 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
11487 | commands are associated with the bpstat; if we remove it here, | |
11488 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
11489 | event-top.c won't do anything, and temporary breakpoints with | |
11490 | commands won't work. */ | |
11491 | ||
11492 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
11493 | ||
4a64f543 MS |
11494 | /* Now that breakpoint is removed from breakpoint list, update the |
11495 | global location list. This will remove locations that used to | |
11496 | belong to this breakpoint. Do this before freeing the breakpoint | |
11497 | itself, since remove_breakpoint looks at location's owner. It | |
11498 | might be better design to have location completely | |
11499 | self-contained, but it's not the case now. */ | |
b60e7edf | 11500 | update_global_location_list (0); |
74960c60 | 11501 | |
348d480f | 11502 | bpt->ops->dtor (bpt); |
4a64f543 MS |
11503 | /* On the chance that someone will soon try again to delete this |
11504 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 11505 | bpt->type = bp_none; |
b8c9b27d | 11506 | xfree (bpt); |
c906108c SS |
11507 | } |
11508 | ||
4d6140d9 AC |
11509 | static void |
11510 | do_delete_breakpoint_cleanup (void *b) | |
11511 | { | |
11512 | delete_breakpoint (b); | |
11513 | } | |
11514 | ||
11515 | struct cleanup * | |
11516 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
11517 | { | |
11518 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
11519 | } | |
11520 | ||
51be5b68 PA |
11521 | /* Iterator function to call a user-provided callback function once |
11522 | for each of B and its related breakpoints. */ | |
11523 | ||
11524 | static void | |
11525 | iterate_over_related_breakpoints (struct breakpoint *b, | |
11526 | void (*function) (struct breakpoint *, | |
11527 | void *), | |
11528 | void *data) | |
11529 | { | |
11530 | struct breakpoint *related; | |
11531 | ||
11532 | related = b; | |
11533 | do | |
11534 | { | |
11535 | struct breakpoint *next; | |
11536 | ||
11537 | /* FUNCTION may delete RELATED. */ | |
11538 | next = related->related_breakpoint; | |
11539 | ||
11540 | if (next == related) | |
11541 | { | |
11542 | /* RELATED is the last ring entry. */ | |
11543 | function (related, data); | |
11544 | ||
11545 | /* FUNCTION may have deleted it, so we'd never reach back to | |
11546 | B. There's nothing left to do anyway, so just break | |
11547 | out. */ | |
11548 | break; | |
11549 | } | |
11550 | else | |
11551 | function (related, data); | |
11552 | ||
11553 | related = next; | |
11554 | } | |
11555 | while (related != b); | |
11556 | } | |
95a42b64 TT |
11557 | |
11558 | static void | |
11559 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11560 | { | |
11561 | delete_breakpoint (b); | |
11562 | } | |
11563 | ||
51be5b68 PA |
11564 | /* A callback for map_breakpoint_numbers that calls |
11565 | delete_breakpoint. */ | |
11566 | ||
11567 | static void | |
11568 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11569 | { | |
11570 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
11571 | } | |
11572 | ||
c906108c | 11573 | void |
fba45db2 | 11574 | delete_command (char *arg, int from_tty) |
c906108c | 11575 | { |
35df4500 | 11576 | struct breakpoint *b, *b_tmp; |
c906108c | 11577 | |
ea9365bb TT |
11578 | dont_repeat (); |
11579 | ||
c906108c SS |
11580 | if (arg == 0) |
11581 | { | |
11582 | int breaks_to_delete = 0; | |
11583 | ||
46c6471b PA |
11584 | /* Delete all breakpoints if no argument. Do not delete |
11585 | internal breakpoints, these have to be deleted with an | |
11586 | explicit breakpoint number argument. */ | |
c5aa993b | 11587 | ALL_BREAKPOINTS (b) |
46c6471b | 11588 | if (user_breakpoint_p (b)) |
973d738b DJ |
11589 | { |
11590 | breaks_to_delete = 1; | |
11591 | break; | |
11592 | } | |
c906108c SS |
11593 | |
11594 | /* Ask user only if there are some breakpoints to delete. */ | |
11595 | if (!from_tty | |
e2e0b3e5 | 11596 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 11597 | { |
35df4500 | 11598 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 11599 | if (user_breakpoint_p (b)) |
c5aa993b | 11600 | delete_breakpoint (b); |
c906108c SS |
11601 | } |
11602 | } | |
11603 | else | |
51be5b68 | 11604 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
11605 | } |
11606 | ||
0d381245 VP |
11607 | static int |
11608 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 11609 | { |
0d381245 VP |
11610 | for (; loc; loc = loc->next) |
11611 | if (!loc->shlib_disabled) | |
11612 | return 0; | |
11613 | return 1; | |
fe3f5fa8 VP |
11614 | } |
11615 | ||
776592bf DE |
11616 | /* Subroutine of update_breakpoint_locations to simplify it. |
11617 | Return non-zero if multiple fns in list LOC have the same name. | |
11618 | Null names are ignored. */ | |
11619 | ||
11620 | static int | |
11621 | ambiguous_names_p (struct bp_location *loc) | |
11622 | { | |
11623 | struct bp_location *l; | |
11624 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
11625 | (int (*) (const void *, |
11626 | const void *)) streq, | |
776592bf DE |
11627 | NULL, xcalloc, xfree); |
11628 | ||
11629 | for (l = loc; l != NULL; l = l->next) | |
11630 | { | |
11631 | const char **slot; | |
11632 | const char *name = l->function_name; | |
11633 | ||
11634 | /* Allow for some names to be NULL, ignore them. */ | |
11635 | if (name == NULL) | |
11636 | continue; | |
11637 | ||
11638 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
11639 | INSERT); | |
4a64f543 MS |
11640 | /* NOTE: We can assume slot != NULL here because xcalloc never |
11641 | returns NULL. */ | |
776592bf DE |
11642 | if (*slot != NULL) |
11643 | { | |
11644 | htab_delete (htab); | |
11645 | return 1; | |
11646 | } | |
11647 | *slot = name; | |
11648 | } | |
11649 | ||
11650 | htab_delete (htab); | |
11651 | return 0; | |
11652 | } | |
11653 | ||
0fb4aa4b PA |
11654 | /* When symbols change, it probably means the sources changed as well, |
11655 | and it might mean the static tracepoint markers are no longer at | |
11656 | the same address or line numbers they used to be at last we | |
11657 | checked. Losing your static tracepoints whenever you rebuild is | |
11658 | undesirable. This function tries to resync/rematch gdb static | |
11659 | tracepoints with the markers on the target, for static tracepoints | |
11660 | that have not been set by marker id. Static tracepoint that have | |
11661 | been set by marker id are reset by marker id in breakpoint_re_set. | |
11662 | The heuristic is: | |
11663 | ||
11664 | 1) For a tracepoint set at a specific address, look for a marker at | |
11665 | the old PC. If one is found there, assume to be the same marker. | |
11666 | If the name / string id of the marker found is different from the | |
11667 | previous known name, assume that means the user renamed the marker | |
11668 | in the sources, and output a warning. | |
11669 | ||
11670 | 2) For a tracepoint set at a given line number, look for a marker | |
11671 | at the new address of the old line number. If one is found there, | |
11672 | assume to be the same marker. If the name / string id of the | |
11673 | marker found is different from the previous known name, assume that | |
11674 | means the user renamed the marker in the sources, and output a | |
11675 | warning. | |
11676 | ||
11677 | 3) If a marker is no longer found at the same address or line, it | |
11678 | may mean the marker no longer exists. But it may also just mean | |
11679 | the code changed a bit. Maybe the user added a few lines of code | |
11680 | that made the marker move up or down (in line number terms). Ask | |
11681 | the target for info about the marker with the string id as we knew | |
11682 | it. If found, update line number and address in the matching | |
11683 | static tracepoint. This will get confused if there's more than one | |
11684 | marker with the same ID (possible in UST, although unadvised | |
11685 | precisely because it confuses tools). */ | |
11686 | ||
11687 | static struct symtab_and_line | |
11688 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
11689 | { | |
d9b3f62e | 11690 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
11691 | struct static_tracepoint_marker marker; |
11692 | CORE_ADDR pc; | |
11693 | int i; | |
11694 | ||
11695 | pc = sal.pc; | |
11696 | if (sal.line) | |
11697 | find_line_pc (sal.symtab, sal.line, &pc); | |
11698 | ||
11699 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
11700 | { | |
d9b3f62e | 11701 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
11702 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
11703 | b->number, | |
d9b3f62e | 11704 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 11705 | |
d9b3f62e PA |
11706 | xfree (tp->static_trace_marker_id); |
11707 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
11708 | release_static_tracepoint_marker (&marker); |
11709 | ||
11710 | return sal; | |
11711 | } | |
11712 | ||
11713 | /* Old marker wasn't found on target at lineno. Try looking it up | |
11714 | by string ID. */ | |
11715 | if (!sal.explicit_pc | |
11716 | && sal.line != 0 | |
11717 | && sal.symtab != NULL | |
d9b3f62e | 11718 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
11719 | { |
11720 | VEC(static_tracepoint_marker_p) *markers; | |
11721 | ||
11722 | markers | |
d9b3f62e | 11723 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
11724 | |
11725 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
11726 | { | |
11727 | struct symtab_and_line sal; | |
11728 | struct symbol *sym; | |
11729 | struct static_tracepoint_marker *marker; | |
79a45e25 | 11730 | struct ui_out *uiout = current_uiout; |
0fb4aa4b PA |
11731 | |
11732 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
11733 | ||
d9b3f62e PA |
11734 | xfree (tp->static_trace_marker_id); |
11735 | tp->static_trace_marker_id = xstrdup (marker->str_id); | |
0fb4aa4b PA |
11736 | |
11737 | warning (_("marker for static tracepoint %d (%s) not " | |
11738 | "found at previous line number"), | |
d9b3f62e | 11739 | b->number, tp->static_trace_marker_id); |
0fb4aa4b PA |
11740 | |
11741 | init_sal (&sal); | |
11742 | ||
11743 | sal.pc = marker->address; | |
11744 | ||
11745 | sal = find_pc_line (marker->address, 0); | |
11746 | sym = find_pc_sect_function (marker->address, NULL); | |
11747 | ui_out_text (uiout, "Now in "); | |
11748 | if (sym) | |
11749 | { | |
11750 | ui_out_field_string (uiout, "func", | |
11751 | SYMBOL_PRINT_NAME (sym)); | |
11752 | ui_out_text (uiout, " at "); | |
11753 | } | |
11754 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
11755 | ui_out_text (uiout, ":"); | |
11756 | ||
11757 | if (ui_out_is_mi_like_p (uiout)) | |
11758 | { | |
11759 | char *fullname = symtab_to_fullname (sal.symtab); | |
11760 | ||
11761 | if (fullname) | |
11762 | ui_out_field_string (uiout, "fullname", fullname); | |
11763 | } | |
11764 | ||
11765 | ui_out_field_int (uiout, "line", sal.line); | |
11766 | ui_out_text (uiout, "\n"); | |
11767 | ||
11768 | b->line_number = sal.line; | |
11769 | ||
11770 | xfree (b->source_file); | |
11771 | if (sym) | |
11772 | b->source_file = xstrdup (sal.symtab->filename); | |
11773 | else | |
11774 | b->source_file = NULL; | |
11775 | ||
11776 | xfree (b->addr_string); | |
11777 | b->addr_string = xstrprintf ("%s:%d", | |
11778 | sal.symtab->filename, b->line_number); | |
11779 | ||
11780 | /* Might be nice to check if function changed, and warn if | |
11781 | so. */ | |
11782 | ||
11783 | release_static_tracepoint_marker (marker); | |
11784 | } | |
11785 | } | |
11786 | return sal; | |
11787 | } | |
11788 | ||
8d3788bd VP |
11789 | /* Returns 1 iff locations A and B are sufficiently same that |
11790 | we don't need to report breakpoint as changed. */ | |
11791 | ||
11792 | static int | |
11793 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
11794 | { | |
11795 | while (a && b) | |
11796 | { | |
11797 | if (a->address != b->address) | |
11798 | return 0; | |
11799 | ||
11800 | if (a->shlib_disabled != b->shlib_disabled) | |
11801 | return 0; | |
11802 | ||
11803 | if (a->enabled != b->enabled) | |
11804 | return 0; | |
11805 | ||
11806 | a = a->next; | |
11807 | b = b->next; | |
11808 | } | |
11809 | ||
11810 | if ((a == NULL) != (b == NULL)) | |
11811 | return 0; | |
11812 | ||
11813 | return 1; | |
11814 | } | |
11815 | ||
f1310107 TJB |
11816 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
11817 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
11818 | a ranged breakpoint. */ | |
11819 | ||
0e30163f | 11820 | void |
0d381245 | 11821 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
11822 | struct symtabs_and_lines sals, |
11823 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
11824 | { |
11825 | int i; | |
0d381245 VP |
11826 | struct bp_location *existing_locations = b->loc; |
11827 | ||
f1310107 TJB |
11828 | /* Ranged breakpoints have only one start location and one end location. */ |
11829 | gdb_assert (sals_end.nelts == 0 || (sals.nelts == 1 && sals_end.nelts == 1)); | |
11830 | ||
4a64f543 MS |
11831 | /* If there's no new locations, and all existing locations are |
11832 | pending, don't do anything. This optimizes the common case where | |
11833 | all locations are in the same shared library, that was unloaded. | |
11834 | We'd like to retain the location, so that when the library is | |
11835 | loaded again, we don't loose the enabled/disabled status of the | |
11836 | individual locations. */ | |
0d381245 | 11837 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
11838 | return; |
11839 | ||
fe3f5fa8 VP |
11840 | b->loc = NULL; |
11841 | ||
0d381245 | 11842 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 11843 | { |
0d381245 | 11844 | struct bp_location *new_loc = |
39d61571 | 11845 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 11846 | |
0d381245 VP |
11847 | /* Reparse conditions, they might contain references to the |
11848 | old symtab. */ | |
11849 | if (b->cond_string != NULL) | |
11850 | { | |
f1310107 | 11851 | char *s; |
0d381245 | 11852 | struct gdb_exception e; |
fe3f5fa8 | 11853 | |
0d381245 VP |
11854 | s = b->cond_string; |
11855 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11856 | { | |
11857 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
11858 | 0); | |
11859 | } | |
11860 | if (e.reason < 0) | |
11861 | { | |
3e43a32a MS |
11862 | warning (_("failed to reevaluate condition " |
11863 | "for breakpoint %d: %s"), | |
0d381245 VP |
11864 | b->number, e.message); |
11865 | new_loc->enabled = 0; | |
11866 | } | |
11867 | } | |
fe3f5fa8 | 11868 | |
0d381245 VP |
11869 | if (b->source_file != NULL) |
11870 | xfree (b->source_file); | |
11871 | if (sals.sals[i].symtab == NULL) | |
11872 | b->source_file = NULL; | |
11873 | else | |
1b36a34b | 11874 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 11875 | |
0d381245 VP |
11876 | if (b->line_number == 0) |
11877 | b->line_number = sals.sals[i].line; | |
f1310107 TJB |
11878 | |
11879 | if (sals_end.nelts) | |
11880 | { | |
11881 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
11882 | ||
11883 | new_loc->length = end - sals.sals[0].pc + 1; | |
11884 | } | |
0d381245 | 11885 | } |
fe3f5fa8 | 11886 | |
514f746b AR |
11887 | /* Update locations of permanent breakpoints. */ |
11888 | if (b->enable_state == bp_permanent) | |
11889 | make_breakpoint_permanent (b); | |
11890 | ||
4a64f543 MS |
11891 | /* If possible, carry over 'disable' status from existing |
11892 | breakpoints. */ | |
0d381245 VP |
11893 | { |
11894 | struct bp_location *e = existing_locations; | |
776592bf DE |
11895 | /* If there are multiple breakpoints with the same function name, |
11896 | e.g. for inline functions, comparing function names won't work. | |
11897 | Instead compare pc addresses; this is just a heuristic as things | |
11898 | may have moved, but in practice it gives the correct answer | |
11899 | often enough until a better solution is found. */ | |
11900 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
11901 | ||
0d381245 VP |
11902 | for (; e; e = e->next) |
11903 | { | |
11904 | if (!e->enabled && e->function_name) | |
11905 | { | |
11906 | struct bp_location *l = b->loc; | |
776592bf DE |
11907 | if (have_ambiguous_names) |
11908 | { | |
11909 | for (; l; l = l->next) | |
f1310107 | 11910 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
11911 | { |
11912 | l->enabled = 0; | |
11913 | break; | |
11914 | } | |
11915 | } | |
11916 | else | |
11917 | { | |
11918 | for (; l; l = l->next) | |
11919 | if (l->function_name | |
11920 | && strcmp (e->function_name, l->function_name) == 0) | |
11921 | { | |
11922 | l->enabled = 0; | |
11923 | break; | |
11924 | } | |
11925 | } | |
0d381245 VP |
11926 | } |
11927 | } | |
11928 | } | |
fe3f5fa8 | 11929 | |
8d3788bd VP |
11930 | if (!locations_are_equal (existing_locations, b->loc)) |
11931 | observer_notify_breakpoint_modified (b); | |
11932 | ||
b60e7edf | 11933 | update_global_location_list (1); |
fe3f5fa8 VP |
11934 | } |
11935 | ||
ef23e705 TJB |
11936 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
11937 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
11938 | ||
11939 | static struct symtabs_and_lines | |
11940 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
11941 | { | |
11942 | char *s; | |
58438ac1 | 11943 | int marker_spec; |
02d20e4a | 11944 | struct symtabs_and_lines sals = {0}; |
ef23e705 TJB |
11945 | struct gdb_exception e; |
11946 | ||
11947 | s = addr_string; | |
11948 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
11949 | ||
11950 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11951 | { | |
11952 | if (marker_spec) | |
11953 | { | |
d9b3f62e PA |
11954 | struct tracepoint *tp = (struct tracepoint *) b; |
11955 | ||
ef23e705 | 11956 | sals = decode_static_tracepoint_spec (&s); |
d9b3f62e | 11957 | if (sals.nelts > tp->static_trace_marker_id_idx) |
ef23e705 | 11958 | { |
d9b3f62e | 11959 | sals.sals[0] = sals.sals[tp->static_trace_marker_id_idx]; |
ef23e705 TJB |
11960 | sals.nelts = 1; |
11961 | } | |
11962 | else | |
d9b3f62e | 11963 | error (_("marker %s not found"), tp->static_trace_marker_id); |
ef23e705 TJB |
11964 | } |
11965 | else | |
58438ac1 | 11966 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, NULL); |
ef23e705 TJB |
11967 | } |
11968 | if (e.reason < 0) | |
11969 | { | |
11970 | int not_found_and_ok = 0; | |
11971 | /* For pending breakpoints, it's expected that parsing will | |
11972 | fail until the right shared library is loaded. User has | |
11973 | already told to create pending breakpoints and don't need | |
11974 | extra messages. If breakpoint is in bp_shlib_disabled | |
11975 | state, then user already saw the message about that | |
11976 | breakpoint being disabled, and don't want to see more | |
11977 | errors. */ | |
58438ac1 | 11978 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
11979 | && (b->condition_not_parsed |
11980 | || (b->loc && b->loc->shlib_disabled) | |
11981 | || b->enable_state == bp_disabled)) | |
11982 | not_found_and_ok = 1; | |
11983 | ||
11984 | if (!not_found_and_ok) | |
11985 | { | |
11986 | /* We surely don't want to warn about the same breakpoint | |
11987 | 10 times. One solution, implemented here, is disable | |
11988 | the breakpoint on error. Another solution would be to | |
11989 | have separate 'warning emitted' flag. Since this | |
11990 | happens only when a binary has changed, I don't know | |
11991 | which approach is better. */ | |
11992 | b->enable_state = bp_disabled; | |
11993 | throw_exception (e); | |
11994 | } | |
11995 | } | |
11996 | ||
58438ac1 | 11997 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 TJB |
11998 | { |
11999 | gdb_assert (sals.nelts == 1); | |
12000 | ||
12001 | resolve_sal_pc (&sals.sals[0]); | |
12002 | if (b->condition_not_parsed && s && s[0]) | |
12003 | { | |
12004 | char *cond_string = 0; | |
12005 | int thread = -1; | |
12006 | int task = 0; | |
12007 | ||
12008 | find_condition_and_thread (s, sals.sals[0].pc, | |
12009 | &cond_string, &thread, &task); | |
12010 | if (cond_string) | |
12011 | b->cond_string = cond_string; | |
12012 | b->thread = thread; | |
12013 | b->task = task; | |
12014 | b->condition_not_parsed = 0; | |
12015 | } | |
12016 | ||
12017 | if (b->type == bp_static_tracepoint && !marker_spec) | |
12018 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
ef23e705 | 12019 | |
58438ac1 TT |
12020 | *found = 1; |
12021 | } | |
12022 | else | |
12023 | *found = 0; | |
ef23e705 TJB |
12024 | |
12025 | return sals; | |
12026 | } | |
12027 | ||
348d480f PA |
12028 | /* The default re_set method, for typical hardware or software |
12029 | breakpoints. Reevaluate the breakpoint and recreate its | |
12030 | locations. */ | |
12031 | ||
12032 | static void | |
28010a5d | 12033 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
12034 | { |
12035 | int found; | |
f1310107 | 12036 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 12037 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 12038 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
12039 | |
12040 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
12041 | if (found) | |
12042 | { | |
12043 | make_cleanup (xfree, sals.sals); | |
12044 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
12045 | } | |
12046 | ||
f1310107 TJB |
12047 | if (b->addr_string_range_end) |
12048 | { | |
12049 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
12050 | if (found) | |
12051 | { | |
12052 | make_cleanup (xfree, sals_end.sals); | |
12053 | expanded_end = expand_line_sal_maybe (sals_end.sals[0]); | |
12054 | } | |
12055 | } | |
12056 | ||
12057 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
12058 | } |
12059 | ||
12060 | /* Prepare the global context for a re-set of breakpoint B. */ | |
12061 | ||
12062 | static struct cleanup * | |
12063 | prepare_re_set_context (struct breakpoint *b) | |
12064 | { | |
12065 | struct cleanup *cleanups; | |
12066 | ||
12067 | input_radix = b->input_radix; | |
12068 | cleanups = save_current_space_and_thread (); | |
12069 | switch_to_program_space_and_thread (b->pspace); | |
12070 | set_language (b->language); | |
12071 | ||
12072 | return cleanups; | |
ef23e705 TJB |
12073 | } |
12074 | ||
c906108c SS |
12075 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
12076 | The value we return ends up being the return value from catch_errors. | |
12077 | Unused in this case. */ | |
12078 | ||
12079 | static int | |
4efb68b1 | 12080 | breakpoint_re_set_one (void *bint) |
c906108c | 12081 | { |
4a64f543 | 12082 | /* Get past catch_errs. */ |
53a5351d | 12083 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 12084 | struct cleanup *cleanups; |
c906108c | 12085 | |
348d480f PA |
12086 | cleanups = prepare_re_set_context (b); |
12087 | b->ops->re_set (b); | |
12088 | do_cleanups (cleanups); | |
c906108c SS |
12089 | return 0; |
12090 | } | |
12091 | ||
69de3c6a | 12092 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 12093 | void |
69de3c6a | 12094 | breakpoint_re_set (void) |
c906108c | 12095 | { |
35df4500 | 12096 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12097 | enum language save_language; |
12098 | int save_input_radix; | |
6c95b8df | 12099 | struct cleanup *old_chain; |
c5aa993b | 12100 | |
c906108c SS |
12101 | save_language = current_language->la_language; |
12102 | save_input_radix = input_radix; | |
6c95b8df PA |
12103 | old_chain = save_current_program_space (); |
12104 | ||
35df4500 | 12105 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12106 | { |
4a64f543 | 12107 | /* Format possible error msg. */ |
fe3f5fa8 | 12108 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
12109 | b->number); |
12110 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 12111 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 12112 | do_cleanups (cleanups); |
c5aa993b | 12113 | } |
c906108c SS |
12114 | set_language (save_language); |
12115 | input_radix = save_input_radix; | |
e62c965a | 12116 | |
0756c555 | 12117 | jit_breakpoint_re_set (); |
4efc6507 | 12118 | |
6c95b8df PA |
12119 | do_cleanups (old_chain); |
12120 | ||
af02033e PP |
12121 | create_overlay_event_breakpoint (); |
12122 | create_longjmp_master_breakpoint (); | |
12123 | create_std_terminate_master_breakpoint (); | |
186c406b | 12124 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
12125 | |
12126 | /* While we're at it, reset the skip list too. */ | |
12127 | skip_re_set (); | |
c906108c SS |
12128 | } |
12129 | \f | |
c906108c SS |
12130 | /* Reset the thread number of this breakpoint: |
12131 | ||
12132 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12133 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12134 | void |
fba45db2 | 12135 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12136 | { |
12137 | if (b->thread != -1) | |
12138 | { | |
39f77062 KB |
12139 | if (in_thread_list (inferior_ptid)) |
12140 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
12141 | |
12142 | /* We're being called after following a fork. The new fork is | |
12143 | selected as current, and unless this was a vfork will have a | |
12144 | different program space from the original thread. Reset that | |
12145 | as well. */ | |
12146 | b->loc->pspace = current_program_space; | |
c906108c SS |
12147 | } |
12148 | } | |
12149 | ||
03ac34d5 MS |
12150 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12151 | If from_tty is nonzero, it prints a message to that effect, | |
12152 | which ends with a period (no newline). */ | |
12153 | ||
c906108c | 12154 | void |
fba45db2 | 12155 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12156 | { |
52f0bd74 | 12157 | struct breakpoint *b; |
c906108c SS |
12158 | |
12159 | if (count < 0) | |
12160 | count = 0; | |
12161 | ||
12162 | ALL_BREAKPOINTS (b) | |
12163 | if (b->number == bptnum) | |
c5aa993b | 12164 | { |
d77f58be SS |
12165 | if (is_tracepoint (b)) |
12166 | { | |
12167 | if (from_tty && count != 0) | |
12168 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
12169 | bptnum); | |
12170 | return; | |
12171 | } | |
12172 | ||
c5aa993b | 12173 | b->ignore_count = count; |
221ea385 KS |
12174 | if (from_tty) |
12175 | { | |
12176 | if (count == 0) | |
3e43a32a MS |
12177 | printf_filtered (_("Will stop next time " |
12178 | "breakpoint %d is reached."), | |
221ea385 KS |
12179 | bptnum); |
12180 | else if (count == 1) | |
a3f17187 | 12181 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
12182 | bptnum); |
12183 | else | |
3e43a32a MS |
12184 | printf_filtered (_("Will ignore next %d " |
12185 | "crossings of breakpoint %d."), | |
221ea385 KS |
12186 | count, bptnum); |
12187 | } | |
c5aa993b | 12188 | breakpoints_changed (); |
8d3788bd | 12189 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
12190 | return; |
12191 | } | |
c906108c | 12192 | |
8a3fe4f8 | 12193 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
12194 | } |
12195 | ||
c906108c SS |
12196 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
12197 | ||
12198 | static void | |
fba45db2 | 12199 | ignore_command (char *args, int from_tty) |
c906108c SS |
12200 | { |
12201 | char *p = args; | |
52f0bd74 | 12202 | int num; |
c906108c SS |
12203 | |
12204 | if (p == 0) | |
e2e0b3e5 | 12205 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 12206 | |
c906108c | 12207 | num = get_number (&p); |
5c44784c | 12208 | if (num == 0) |
8a3fe4f8 | 12209 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 12210 | if (*p == 0) |
8a3fe4f8 | 12211 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
12212 | |
12213 | set_ignore_count (num, | |
12214 | longest_to_int (value_as_long (parse_and_eval (p))), | |
12215 | from_tty); | |
221ea385 KS |
12216 | if (from_tty) |
12217 | printf_filtered ("\n"); | |
c906108c SS |
12218 | } |
12219 | \f | |
12220 | /* Call FUNCTION on each of the breakpoints | |
12221 | whose numbers are given in ARGS. */ | |
12222 | ||
12223 | static void | |
95a42b64 TT |
12224 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
12225 | void *), | |
12226 | void *data) | |
c906108c | 12227 | { |
52f0bd74 AC |
12228 | int num; |
12229 | struct breakpoint *b, *tmp; | |
11cf8741 | 12230 | int match; |
197f0a60 | 12231 | struct get_number_or_range_state state; |
c906108c | 12232 | |
197f0a60 | 12233 | if (args == 0) |
e2e0b3e5 | 12234 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 12235 | |
197f0a60 TT |
12236 | init_number_or_range (&state, args); |
12237 | ||
12238 | while (!state.finished) | |
c906108c | 12239 | { |
197f0a60 TT |
12240 | char *p = state.string; |
12241 | ||
11cf8741 | 12242 | match = 0; |
c5aa993b | 12243 | |
197f0a60 | 12244 | num = get_number_or_range (&state); |
5c44784c | 12245 | if (num == 0) |
c5aa993b | 12246 | { |
8a3fe4f8 | 12247 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
12248 | } |
12249 | else | |
12250 | { | |
12251 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
12252 | if (b->number == num) | |
12253 | { | |
11cf8741 | 12254 | match = 1; |
cdac0397 | 12255 | function (b, data); |
11cf8741 | 12256 | break; |
5c44784c | 12257 | } |
11cf8741 | 12258 | if (match == 0) |
a3f17187 | 12259 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 12260 | } |
c906108c SS |
12261 | } |
12262 | } | |
12263 | ||
0d381245 VP |
12264 | static struct bp_location * |
12265 | find_location_by_number (char *number) | |
12266 | { | |
12267 | char *dot = strchr (number, '.'); | |
12268 | char *p1; | |
12269 | int bp_num; | |
12270 | int loc_num; | |
12271 | struct breakpoint *b; | |
12272 | struct bp_location *loc; | |
12273 | ||
12274 | *dot = '\0'; | |
12275 | ||
12276 | p1 = number; | |
197f0a60 | 12277 | bp_num = get_number (&p1); |
0d381245 VP |
12278 | if (bp_num == 0) |
12279 | error (_("Bad breakpoint number '%s'"), number); | |
12280 | ||
12281 | ALL_BREAKPOINTS (b) | |
12282 | if (b->number == bp_num) | |
12283 | { | |
12284 | break; | |
12285 | } | |
12286 | ||
12287 | if (!b || b->number != bp_num) | |
12288 | error (_("Bad breakpoint number '%s'"), number); | |
12289 | ||
12290 | p1 = dot+1; | |
197f0a60 | 12291 | loc_num = get_number (&p1); |
0d381245 VP |
12292 | if (loc_num == 0) |
12293 | error (_("Bad breakpoint location number '%s'"), number); | |
12294 | ||
12295 | --loc_num; | |
12296 | loc = b->loc; | |
12297 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
12298 | ; | |
12299 | if (!loc) | |
12300 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
12301 | ||
12302 | return loc; | |
12303 | } | |
12304 | ||
12305 | ||
1900040c MS |
12306 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12307 | If from_tty is nonzero, it prints a message to that effect, | |
12308 | which ends with a period (no newline). */ | |
12309 | ||
c906108c | 12310 | void |
fba45db2 | 12311 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
12312 | { |
12313 | /* Never disable a watchpoint scope breakpoint; we want to | |
12314 | hit them when we leave scope so we can delete both the | |
12315 | watchpoint and its scope breakpoint at that time. */ | |
12316 | if (bpt->type == bp_watchpoint_scope) | |
12317 | return; | |
12318 | ||
c2c6d25f | 12319 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 12320 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
12321 | return; |
12322 | ||
b5de0fa7 | 12323 | bpt->enable_state = bp_disabled; |
c906108c | 12324 | |
d248b706 KY |
12325 | if (target_supports_enable_disable_tracepoint () |
12326 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12327 | { | |
12328 | struct bp_location *location; | |
12329 | ||
12330 | for (location = bpt->loc; location; location = location->next) | |
12331 | target_disable_tracepoint (location); | |
12332 | } | |
12333 | ||
b60e7edf | 12334 | update_global_location_list (0); |
c906108c | 12335 | |
8d3788bd | 12336 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12337 | } |
12338 | ||
51be5b68 PA |
12339 | /* A callback for iterate_over_related_breakpoints. */ |
12340 | ||
12341 | static void | |
12342 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12343 | { | |
12344 | disable_breakpoint (b); | |
12345 | } | |
12346 | ||
95a42b64 TT |
12347 | /* A callback for map_breakpoint_numbers that calls |
12348 | disable_breakpoint. */ | |
12349 | ||
12350 | static void | |
12351 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12352 | { | |
51be5b68 | 12353 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
12354 | } |
12355 | ||
c906108c | 12356 | static void |
fba45db2 | 12357 | disable_command (char *args, int from_tty) |
c906108c | 12358 | { |
c906108c | 12359 | if (args == 0) |
46c6471b PA |
12360 | { |
12361 | struct breakpoint *bpt; | |
12362 | ||
12363 | ALL_BREAKPOINTS (bpt) | |
12364 | if (user_breakpoint_p (bpt)) | |
12365 | disable_breakpoint (bpt); | |
12366 | } | |
0d381245 VP |
12367 | else if (strchr (args, '.')) |
12368 | { | |
12369 | struct bp_location *loc = find_location_by_number (args); | |
12370 | if (loc) | |
d248b706 KY |
12371 | { |
12372 | loc->enabled = 0; | |
12373 | if (target_supports_enable_disable_tracepoint () | |
12374 | && current_trace_status ()->running && loc->owner | |
12375 | && is_tracepoint (loc->owner)) | |
12376 | target_disable_tracepoint (loc); | |
12377 | } | |
b60e7edf | 12378 | update_global_location_list (0); |
0d381245 | 12379 | } |
c906108c | 12380 | else |
95a42b64 | 12381 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
12382 | } |
12383 | ||
12384 | static void | |
51be5b68 | 12385 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 12386 | { |
afe38095 | 12387 | int target_resources_ok; |
c906108c SS |
12388 | |
12389 | if (bpt->type == bp_hardware_breakpoint) | |
12390 | { | |
12391 | int i; | |
c5aa993b | 12392 | i = hw_breakpoint_used_count (); |
53a5351d | 12393 | target_resources_ok = |
d92524f1 | 12394 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 12395 | i + 1, 0); |
c906108c | 12396 | if (target_resources_ok == 0) |
8a3fe4f8 | 12397 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 12398 | else if (target_resources_ok < 0) |
8a3fe4f8 | 12399 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
12400 | } |
12401 | ||
cc60f2e3 | 12402 | if (is_watchpoint (bpt)) |
c906108c | 12403 | { |
d07205c2 JK |
12404 | /* Initialize it just to avoid a GCC false warning. */ |
12405 | enum enable_state orig_enable_state = 0; | |
dde02812 ES |
12406 | struct gdb_exception e; |
12407 | ||
12408 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 12409 | { |
3a5c3e22 PA |
12410 | struct watchpoint *w = (struct watchpoint *) bpt; |
12411 | ||
1e718ff1 TJB |
12412 | orig_enable_state = bpt->enable_state; |
12413 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 12414 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 12415 | } |
dde02812 | 12416 | if (e.reason < 0) |
c5aa993b | 12417 | { |
1e718ff1 | 12418 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
12419 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
12420 | bpt->number); | |
12421 | return; | |
c5aa993b | 12422 | } |
c906108c | 12423 | } |
0101ce28 | 12424 | |
b4c291bb KH |
12425 | if (bpt->enable_state != bp_permanent) |
12426 | bpt->enable_state = bp_enabled; | |
d248b706 KY |
12427 | |
12428 | if (target_supports_enable_disable_tracepoint () | |
12429 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12430 | { | |
12431 | struct bp_location *location; | |
12432 | ||
12433 | for (location = bpt->loc; location; location = location->next) | |
12434 | target_enable_tracepoint (location); | |
12435 | } | |
12436 | ||
b4c291bb | 12437 | bpt->disposition = disposition; |
b60e7edf | 12438 | update_global_location_list (1); |
b4c291bb KH |
12439 | breakpoints_changed (); |
12440 | ||
8d3788bd | 12441 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12442 | } |
12443 | ||
fe3f5fa8 | 12444 | |
c906108c | 12445 | void |
fba45db2 | 12446 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 12447 | { |
51be5b68 PA |
12448 | enable_breakpoint_disp (bpt, bpt->disposition); |
12449 | } | |
12450 | ||
12451 | static void | |
12452 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
12453 | { | |
12454 | enable_breakpoint (bpt); | |
c906108c SS |
12455 | } |
12456 | ||
95a42b64 TT |
12457 | /* A callback for map_breakpoint_numbers that calls |
12458 | enable_breakpoint. */ | |
12459 | ||
12460 | static void | |
12461 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
12462 | { | |
51be5b68 | 12463 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
12464 | } |
12465 | ||
c906108c SS |
12466 | /* The enable command enables the specified breakpoints (or all defined |
12467 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 12468 | in stopping the inferior. */ |
c906108c | 12469 | |
c906108c | 12470 | static void |
fba45db2 | 12471 | enable_command (char *args, int from_tty) |
c906108c | 12472 | { |
c906108c | 12473 | if (args == 0) |
46c6471b PA |
12474 | { |
12475 | struct breakpoint *bpt; | |
12476 | ||
12477 | ALL_BREAKPOINTS (bpt) | |
12478 | if (user_breakpoint_p (bpt)) | |
12479 | enable_breakpoint (bpt); | |
12480 | } | |
0d381245 VP |
12481 | else if (strchr (args, '.')) |
12482 | { | |
12483 | struct bp_location *loc = find_location_by_number (args); | |
12484 | if (loc) | |
d248b706 KY |
12485 | { |
12486 | loc->enabled = 1; | |
12487 | if (target_supports_enable_disable_tracepoint () | |
12488 | && current_trace_status ()->running && loc->owner | |
12489 | && is_tracepoint (loc->owner)) | |
12490 | target_enable_tracepoint (loc); | |
12491 | } | |
b60e7edf | 12492 | update_global_location_list (1); |
0d381245 | 12493 | } |
c906108c | 12494 | else |
95a42b64 | 12495 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
12496 | } |
12497 | ||
12498 | static void | |
51be5b68 PA |
12499 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
12500 | { | |
12501 | enum bpdisp disp = *(enum bpdisp *) arg; | |
12502 | ||
12503 | enable_breakpoint_disp (bpt, disp); | |
12504 | } | |
12505 | ||
12506 | static void | |
12507 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 12508 | { |
51be5b68 PA |
12509 | enum bpdisp disp = disp_disable; |
12510 | ||
12511 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12512 | } |
12513 | ||
c906108c | 12514 | static void |
fba45db2 | 12515 | enable_once_command (char *args, int from_tty) |
c906108c | 12516 | { |
51be5b68 | 12517 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
12518 | } |
12519 | ||
12520 | static void | |
51be5b68 | 12521 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 12522 | { |
51be5b68 PA |
12523 | enum bpdisp disp = disp_del; |
12524 | ||
12525 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12526 | } |
12527 | ||
c906108c | 12528 | static void |
fba45db2 | 12529 | enable_delete_command (char *args, int from_tty) |
c906108c | 12530 | { |
51be5b68 | 12531 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
12532 | } |
12533 | \f | |
fa8d40ab JJ |
12534 | static void |
12535 | set_breakpoint_cmd (char *args, int from_tty) | |
12536 | { | |
12537 | } | |
12538 | ||
12539 | static void | |
12540 | show_breakpoint_cmd (char *args, int from_tty) | |
12541 | { | |
12542 | } | |
12543 | ||
1f3b5d1b PP |
12544 | /* Invalidate last known value of any hardware watchpoint if |
12545 | the memory which that value represents has been written to by | |
12546 | GDB itself. */ | |
12547 | ||
12548 | static void | |
12549 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
12550 | const bfd_byte *data) | |
12551 | { | |
12552 | struct breakpoint *bp; | |
12553 | ||
12554 | ALL_BREAKPOINTS (bp) | |
12555 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 12556 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 12557 | { |
3a5c3e22 | 12558 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 12559 | |
3a5c3e22 PA |
12560 | if (wp->val_valid && wp->val) |
12561 | { | |
12562 | struct bp_location *loc; | |
12563 | ||
12564 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
12565 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
12566 | && loc->address + loc->length > addr | |
12567 | && addr + len > loc->address) | |
12568 | { | |
12569 | value_free (wp->val); | |
12570 | wp->val = NULL; | |
12571 | wp->val_valid = 0; | |
12572 | } | |
12573 | } | |
1f3b5d1b PP |
12574 | } |
12575 | } | |
12576 | ||
1bfeeb0f JL |
12577 | /* Use the last displayed codepoint's values, or nothing |
12578 | if they aren't valid. */ | |
c906108c SS |
12579 | |
12580 | struct symtabs_and_lines | |
fba45db2 | 12581 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
12582 | { |
12583 | struct symtabs_and_lines sals; | |
cc59ec59 | 12584 | |
c906108c | 12585 | if (string == 0) |
8a3fe4f8 | 12586 | error (_("Empty line specification.")); |
1bfeeb0f | 12587 | if (last_displayed_sal_is_valid ()) |
c906108c | 12588 | sals = decode_line_1 (&string, funfirstline, |
1bfeeb0f JL |
12589 | get_last_displayed_symtab (), |
12590 | get_last_displayed_line (), | |
58438ac1 | 12591 | NULL); |
c906108c SS |
12592 | else |
12593 | sals = decode_line_1 (&string, funfirstline, | |
58438ac1 | 12594 | (struct symtab *) NULL, 0, NULL); |
c906108c | 12595 | if (*string) |
8a3fe4f8 | 12596 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
12597 | return sals; |
12598 | } | |
8181d85f DJ |
12599 | |
12600 | /* Create and insert a raw software breakpoint at PC. Return an | |
12601 | identifier, which should be used to remove the breakpoint later. | |
12602 | In general, places which call this should be using something on the | |
12603 | breakpoint chain instead; this function should be eliminated | |
12604 | someday. */ | |
12605 | ||
12606 | void * | |
6c95b8df PA |
12607 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
12608 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
12609 | { |
12610 | struct bp_target_info *bp_tgt; | |
12611 | ||
6c95b8df | 12612 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 12613 | |
6c95b8df | 12614 | bp_tgt->placed_address_space = aspace; |
8181d85f | 12615 | bp_tgt->placed_address = pc; |
6c95b8df | 12616 | |
a6d9a66e | 12617 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
12618 | { |
12619 | /* Could not insert the breakpoint. */ | |
12620 | xfree (bp_tgt); | |
12621 | return NULL; | |
12622 | } | |
12623 | ||
12624 | return bp_tgt; | |
12625 | } | |
12626 | ||
4a64f543 MS |
12627 | /* Remove a breakpoint BP inserted by |
12628 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
12629 | |
12630 | int | |
a6d9a66e | 12631 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
12632 | { |
12633 | struct bp_target_info *bp_tgt = bp; | |
12634 | int ret; | |
12635 | ||
a6d9a66e | 12636 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
12637 | xfree (bp_tgt); |
12638 | ||
12639 | return ret; | |
12640 | } | |
12641 | ||
4a64f543 MS |
12642 | /* One (or perhaps two) breakpoints used for software single |
12643 | stepping. */ | |
8181d85f DJ |
12644 | |
12645 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 12646 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
12647 | |
12648 | /* Create and insert a breakpoint for software single step. */ | |
12649 | ||
12650 | void | |
6c95b8df | 12651 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
12652 | struct address_space *aspace, |
12653 | CORE_ADDR next_pc) | |
8181d85f DJ |
12654 | { |
12655 | void **bpt_p; | |
12656 | ||
12657 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
12658 | { |
12659 | bpt_p = &single_step_breakpoints[0]; | |
12660 | single_step_gdbarch[0] = gdbarch; | |
12661 | } | |
8181d85f DJ |
12662 | else |
12663 | { | |
12664 | gdb_assert (single_step_breakpoints[1] == NULL); | |
12665 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 12666 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
12667 | } |
12668 | ||
4a64f543 MS |
12669 | /* NOTE drow/2006-04-11: A future improvement to this function would |
12670 | be to only create the breakpoints once, and actually put them on | |
12671 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
12672 | We could adjust the addresses each time they were needed. Doing | |
12673 | this requires corresponding changes elsewhere where single step | |
12674 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 12675 | |
6c95b8df | 12676 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 12677 | if (*bpt_p == NULL) |
5af949e3 UW |
12678 | error (_("Could not insert single-step breakpoint at %s"), |
12679 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
12680 | } |
12681 | ||
f02253f1 HZ |
12682 | /* Check if the breakpoints used for software single stepping |
12683 | were inserted or not. */ | |
12684 | ||
12685 | int | |
12686 | single_step_breakpoints_inserted (void) | |
12687 | { | |
12688 | return (single_step_breakpoints[0] != NULL | |
12689 | || single_step_breakpoints[1] != NULL); | |
12690 | } | |
12691 | ||
8181d85f DJ |
12692 | /* Remove and delete any breakpoints used for software single step. */ |
12693 | ||
12694 | void | |
12695 | remove_single_step_breakpoints (void) | |
12696 | { | |
12697 | gdb_assert (single_step_breakpoints[0] != NULL); | |
12698 | ||
12699 | /* See insert_single_step_breakpoint for more about this deprecated | |
12700 | call. */ | |
a6d9a66e UW |
12701 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
12702 | single_step_breakpoints[0]); | |
12703 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
12704 | single_step_breakpoints[0] = NULL; |
12705 | ||
12706 | if (single_step_breakpoints[1] != NULL) | |
12707 | { | |
a6d9a66e UW |
12708 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
12709 | single_step_breakpoints[1]); | |
12710 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
12711 | single_step_breakpoints[1] = NULL; |
12712 | } | |
12713 | } | |
12714 | ||
d03285ec UW |
12715 | /* Delete software single step breakpoints without removing them from |
12716 | the inferior. This is intended to be used if the inferior's address | |
12717 | space where they were inserted is already gone, e.g. after exit or | |
12718 | exec. */ | |
12719 | ||
12720 | void | |
12721 | cancel_single_step_breakpoints (void) | |
12722 | { | |
12723 | int i; | |
12724 | ||
12725 | for (i = 0; i < 2; i++) | |
12726 | if (single_step_breakpoints[i]) | |
12727 | { | |
12728 | xfree (single_step_breakpoints[i]); | |
12729 | single_step_breakpoints[i] = NULL; | |
12730 | single_step_gdbarch[i] = NULL; | |
12731 | } | |
12732 | } | |
12733 | ||
12734 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
12735 | removing them. */ | |
12736 | ||
12737 | static void | |
12738 | detach_single_step_breakpoints (void) | |
12739 | { | |
12740 | int i; | |
12741 | ||
12742 | for (i = 0; i < 2; i++) | |
12743 | if (single_step_breakpoints[i]) | |
12744 | target_remove_breakpoint (single_step_gdbarch[i], | |
12745 | single_step_breakpoints[i]); | |
12746 | } | |
12747 | ||
4a64f543 MS |
12748 | /* Check whether a software single-step breakpoint is inserted at |
12749 | PC. */ | |
1aafd4da UW |
12750 | |
12751 | static int | |
cc59ec59 MS |
12752 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
12753 | CORE_ADDR pc) | |
1aafd4da UW |
12754 | { |
12755 | int i; | |
12756 | ||
12757 | for (i = 0; i < 2; i++) | |
12758 | { | |
12759 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
12760 | if (bp_tgt |
12761 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
12762 | bp_tgt->placed_address, | |
12763 | aspace, pc)) | |
1aafd4da UW |
12764 | return 1; |
12765 | } | |
12766 | ||
12767 | return 0; | |
12768 | } | |
12769 | ||
a96d9b2e SDJ |
12770 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
12771 | non-zero otherwise. */ | |
12772 | static int | |
12773 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
12774 | { | |
12775 | if (syscall_catchpoint_p (bp) | |
12776 | && bp->enable_state != bp_disabled | |
12777 | && bp->enable_state != bp_call_disabled) | |
12778 | return 1; | |
12779 | else | |
12780 | return 0; | |
12781 | } | |
12782 | ||
12783 | int | |
12784 | catch_syscall_enabled (void) | |
12785 | { | |
12786 | struct inferior *inf = current_inferior (); | |
12787 | ||
12788 | return inf->total_syscalls_count != 0; | |
12789 | } | |
12790 | ||
12791 | int | |
12792 | catching_syscall_number (int syscall_number) | |
12793 | { | |
12794 | struct breakpoint *bp; | |
12795 | ||
12796 | ALL_BREAKPOINTS (bp) | |
12797 | if (is_syscall_catchpoint_enabled (bp)) | |
12798 | { | |
be5c67c1 PA |
12799 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
12800 | ||
12801 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
12802 | { |
12803 | int i, iter; | |
12804 | for (i = 0; | |
be5c67c1 | 12805 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
12806 | i++) |
12807 | if (syscall_number == iter) | |
12808 | return 1; | |
12809 | } | |
12810 | else | |
12811 | return 1; | |
12812 | } | |
12813 | ||
12814 | return 0; | |
12815 | } | |
12816 | ||
12817 | /* Complete syscall names. Used by "catch syscall". */ | |
12818 | static char ** | |
12819 | catch_syscall_completer (struct cmd_list_element *cmd, | |
12820 | char *text, char *word) | |
12821 | { | |
12822 | const char **list = get_syscall_names (); | |
c38eea1a MS |
12823 | char **retlist |
12824 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 12825 | |
c38eea1a MS |
12826 | xfree (list); |
12827 | return retlist; | |
a96d9b2e SDJ |
12828 | } |
12829 | ||
1042e4c0 SS |
12830 | /* Tracepoint-specific operations. */ |
12831 | ||
12832 | /* Set tracepoint count to NUM. */ | |
12833 | static void | |
12834 | set_tracepoint_count (int num) | |
12835 | { | |
12836 | tracepoint_count = num; | |
4fa62494 | 12837 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
12838 | } |
12839 | ||
12840 | void | |
12841 | trace_command (char *arg, int from_tty) | |
12842 | { | |
8cdf0e15 VP |
12843 | if (create_breakpoint (get_current_arch (), |
12844 | arg, | |
12845 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12846 | 0 /* tempflag */, |
12847 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12848 | 0 /* Ignore count */, |
12849 | pending_break_support, | |
348d480f | 12850 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12851 | from_tty, |
84f4c1fe PM |
12852 | 1 /* enabled */, |
12853 | 0 /* internal */)) | |
fd9b8c24 | 12854 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
12855 | } |
12856 | ||
7a697b8d SS |
12857 | void |
12858 | ftrace_command (char *arg, int from_tty) | |
12859 | { | |
8cdf0e15 VP |
12860 | if (create_breakpoint (get_current_arch (), |
12861 | arg, | |
12862 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12863 | 0 /* tempflag */, |
12864 | bp_fast_tracepoint /* type_wanted */, | |
12865 | 0 /* Ignore count */, | |
12866 | pending_break_support, | |
348d480f | 12867 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 12868 | from_tty, |
84f4c1fe PM |
12869 | 1 /* enabled */, |
12870 | 0 /* internal */)) | |
0fb4aa4b PA |
12871 | set_tracepoint_count (breakpoint_count); |
12872 | } | |
12873 | ||
12874 | /* strace command implementation. Creates a static tracepoint. */ | |
12875 | ||
12876 | void | |
12877 | strace_command (char *arg, int from_tty) | |
12878 | { | |
12879 | if (create_breakpoint (get_current_arch (), | |
12880 | arg, | |
12881 | NULL, 0, 1 /* parse arg */, | |
12882 | 0 /* tempflag */, | |
12883 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12884 | 0 /* Ignore count */, |
12885 | pending_break_support, | |
348d480f | 12886 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12887 | from_tty, |
84f4c1fe PM |
12888 | 1 /* enabled */, |
12889 | 0 /* internal */)) | |
fd9b8c24 | 12890 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
12891 | } |
12892 | ||
409873ef SS |
12893 | /* Set up a fake reader function that gets command lines from a linked |
12894 | list that was acquired during tracepoint uploading. */ | |
12895 | ||
12896 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 12897 | static int next_cmd; |
409873ef SS |
12898 | |
12899 | static char * | |
12900 | read_uploaded_action (void) | |
12901 | { | |
12902 | char *rslt; | |
12903 | ||
3149d8c1 | 12904 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 12905 | |
3149d8c1 | 12906 | next_cmd++; |
409873ef SS |
12907 | |
12908 | return rslt; | |
12909 | } | |
12910 | ||
00bf0b85 SS |
12911 | /* Given information about a tracepoint as recorded on a target (which |
12912 | can be either a live system or a trace file), attempt to create an | |
12913 | equivalent GDB tracepoint. This is not a reliable process, since | |
12914 | the target does not necessarily have all the information used when | |
12915 | the tracepoint was originally defined. */ | |
12916 | ||
d9b3f62e | 12917 | struct tracepoint * |
00bf0b85 | 12918 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 12919 | { |
409873ef | 12920 | char *addr_str, small_buf[100]; |
d9b3f62e | 12921 | struct tracepoint *tp; |
fd9b8c24 | 12922 | |
409873ef SS |
12923 | if (utp->at_string) |
12924 | addr_str = utp->at_string; | |
12925 | else | |
12926 | { | |
12927 | /* In the absence of a source location, fall back to raw | |
12928 | address. Since there is no way to confirm that the address | |
12929 | means the same thing as when the trace was started, warn the | |
12930 | user. */ | |
3e43a32a MS |
12931 | warning (_("Uploaded tracepoint %d has no " |
12932 | "source location, using raw address"), | |
409873ef SS |
12933 | utp->number); |
12934 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
12935 | addr_str = small_buf; | |
12936 | } | |
12937 | ||
12938 | /* There's not much we can do with a sequence of bytecodes. */ | |
12939 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
12940 | warning (_("Uploaded tracepoint %d condition " |
12941 | "has no source form, ignoring it"), | |
409873ef | 12942 | utp->number); |
d5551862 | 12943 | |
8cdf0e15 | 12944 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
12945 | addr_str, |
12946 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 12947 | 0 /* tempflag */, |
0fb4aa4b | 12948 | utp->type /* type_wanted */, |
8cdf0e15 VP |
12949 | 0 /* Ignore count */, |
12950 | pending_break_support, | |
348d480f | 12951 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12952 | 0 /* from_tty */, |
84f4c1fe PM |
12953 | utp->enabled /* enabled */, |
12954 | 0 /* internal */)) | |
fd9b8c24 PA |
12955 | return NULL; |
12956 | ||
00bf0b85 SS |
12957 | set_tracepoint_count (breakpoint_count); |
12958 | ||
409873ef | 12959 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
12960 | tp = get_tracepoint (tracepoint_count); |
12961 | gdb_assert (tp != NULL); | |
d5551862 | 12962 | |
00bf0b85 SS |
12963 | if (utp->pass > 0) |
12964 | { | |
d9b3f62e | 12965 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 12966 | |
409873ef | 12967 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
12968 | } |
12969 | ||
409873ef SS |
12970 | /* If we have uploaded versions of the original commands, set up a |
12971 | special-purpose "reader" function and call the usual command line | |
12972 | reader, then pass the result to the breakpoint command-setting | |
12973 | function. */ | |
3149d8c1 | 12974 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 12975 | { |
409873ef | 12976 | struct command_line *cmd_list; |
00bf0b85 | 12977 | |
409873ef | 12978 | this_utp = utp; |
3149d8c1 | 12979 | next_cmd = 0; |
d5551862 | 12980 | |
409873ef SS |
12981 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
12982 | ||
d9b3f62e | 12983 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 12984 | } |
3149d8c1 SS |
12985 | else if (!VEC_empty (char_ptr, utp->actions) |
12986 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
12987 | warning (_("Uploaded tracepoint %d actions " |
12988 | "have no source form, ignoring them"), | |
409873ef | 12989 | utp->number); |
00bf0b85 | 12990 | |
f196051f SS |
12991 | /* Copy any status information that might be available. */ |
12992 | tp->base.hit_count = utp->hit_count; | |
12993 | tp->traceframe_usage = utp->traceframe_usage; | |
12994 | ||
00bf0b85 | 12995 | return tp; |
d9b3f62e | 12996 | } |
00bf0b85 | 12997 | |
1042e4c0 SS |
12998 | /* Print information on tracepoint number TPNUM_EXP, or all if |
12999 | omitted. */ | |
13000 | ||
13001 | static void | |
e5a67952 | 13002 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 13003 | { |
79a45e25 | 13004 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13005 | int num_printed; |
1042e4c0 | 13006 | |
e5a67952 | 13007 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
13008 | |
13009 | if (num_printed == 0) | |
1042e4c0 | 13010 | { |
e5a67952 | 13011 | if (args == NULL || *args == '\0') |
d77f58be SS |
13012 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
13013 | else | |
e5a67952 | 13014 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13015 | } |
ad443146 SS |
13016 | |
13017 | default_collect_info (); | |
1042e4c0 SS |
13018 | } |
13019 | ||
4a64f543 | 13020 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13021 | Not supported by all targets. */ |
13022 | static void | |
13023 | enable_trace_command (char *args, int from_tty) | |
13024 | { | |
13025 | enable_command (args, from_tty); | |
13026 | } | |
13027 | ||
4a64f543 | 13028 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13029 | Not supported by all targets. */ |
13030 | static void | |
13031 | disable_trace_command (char *args, int from_tty) | |
13032 | { | |
13033 | disable_command (args, from_tty); | |
13034 | } | |
13035 | ||
4a64f543 | 13036 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
13037 | static void |
13038 | delete_trace_command (char *arg, int from_tty) | |
13039 | { | |
35df4500 | 13040 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
13041 | |
13042 | dont_repeat (); | |
13043 | ||
13044 | if (arg == 0) | |
13045 | { | |
13046 | int breaks_to_delete = 0; | |
13047 | ||
13048 | /* Delete all breakpoints if no argument. | |
13049 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
13050 | have to be deleted with an explicit breakpoint number |
13051 | argument. */ | |
1042e4c0 | 13052 | ALL_TRACEPOINTS (b) |
46c6471b | 13053 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
13054 | { |
13055 | breaks_to_delete = 1; | |
13056 | break; | |
13057 | } | |
1042e4c0 SS |
13058 | |
13059 | /* Ask user only if there are some breakpoints to delete. */ | |
13060 | if (!from_tty | |
13061 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13062 | { | |
35df4500 | 13063 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13064 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 13065 | delete_breakpoint (b); |
1042e4c0 SS |
13066 | } |
13067 | } | |
13068 | else | |
51be5b68 | 13069 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
13070 | } |
13071 | ||
197f0a60 TT |
13072 | /* Helper function for trace_pass_command. */ |
13073 | ||
13074 | static void | |
d9b3f62e | 13075 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 13076 | { |
d9b3f62e PA |
13077 | tp->pass_count = count; |
13078 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
13079 | if (from_tty) |
13080 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 13081 | tp->base.number, count); |
197f0a60 TT |
13082 | } |
13083 | ||
1042e4c0 SS |
13084 | /* Set passcount for tracepoint. |
13085 | ||
13086 | First command argument is passcount, second is tracepoint number. | |
13087 | If tracepoint number omitted, apply to most recently defined. | |
13088 | Also accepts special argument "all". */ | |
13089 | ||
13090 | static void | |
13091 | trace_pass_command (char *args, int from_tty) | |
13092 | { | |
d9b3f62e | 13093 | struct tracepoint *t1; |
1042e4c0 | 13094 | unsigned int count; |
1042e4c0 SS |
13095 | |
13096 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13097 | error (_("passcount command requires an " |
13098 | "argument (count + optional TP num)")); | |
1042e4c0 | 13099 | |
4a64f543 | 13100 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
13101 | |
13102 | while (*args && isspace ((int) *args)) | |
13103 | args++; | |
13104 | ||
13105 | if (*args && strncasecmp (args, "all", 3) == 0) | |
13106 | { | |
d9b3f62e PA |
13107 | struct breakpoint *b; |
13108 | ||
1042e4c0 | 13109 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
13110 | if (*args) |
13111 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13112 | |
d9b3f62e | 13113 | ALL_TRACEPOINTS (b) |
197f0a60 | 13114 | { |
d9b3f62e | 13115 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
13116 | trace_pass_set_count (t1, count, from_tty); |
13117 | } | |
13118 | } | |
13119 | else if (*args == '\0') | |
1042e4c0 | 13120 | { |
197f0a60 | 13121 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 13122 | if (t1) |
197f0a60 TT |
13123 | trace_pass_set_count (t1, count, from_tty); |
13124 | } | |
13125 | else | |
13126 | { | |
13127 | struct get_number_or_range_state state; | |
13128 | ||
13129 | init_number_or_range (&state, args); | |
13130 | while (!state.finished) | |
1042e4c0 | 13131 | { |
197f0a60 TT |
13132 | t1 = get_tracepoint_by_number (&args, &state, 1); |
13133 | if (t1) | |
13134 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13135 | } |
13136 | } | |
1042e4c0 SS |
13137 | } |
13138 | ||
d9b3f62e | 13139 | struct tracepoint * |
1042e4c0 SS |
13140 | get_tracepoint (int num) |
13141 | { | |
13142 | struct breakpoint *t; | |
13143 | ||
13144 | ALL_TRACEPOINTS (t) | |
13145 | if (t->number == num) | |
d9b3f62e | 13146 | return (struct tracepoint *) t; |
1042e4c0 SS |
13147 | |
13148 | return NULL; | |
13149 | } | |
13150 | ||
d5551862 SS |
13151 | /* Find the tracepoint with the given target-side number (which may be |
13152 | different from the tracepoint number after disconnecting and | |
13153 | reconnecting). */ | |
13154 | ||
d9b3f62e | 13155 | struct tracepoint * |
d5551862 SS |
13156 | get_tracepoint_by_number_on_target (int num) |
13157 | { | |
d9b3f62e | 13158 | struct breakpoint *b; |
d5551862 | 13159 | |
d9b3f62e PA |
13160 | ALL_TRACEPOINTS (b) |
13161 | { | |
13162 | struct tracepoint *t = (struct tracepoint *) b; | |
13163 | ||
13164 | if (t->number_on_target == num) | |
13165 | return t; | |
13166 | } | |
d5551862 SS |
13167 | |
13168 | return NULL; | |
13169 | } | |
13170 | ||
1042e4c0 | 13171 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
13172 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
13173 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 13174 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 13175 | struct tracepoint * |
197f0a60 TT |
13176 | get_tracepoint_by_number (char **arg, |
13177 | struct get_number_or_range_state *state, | |
13178 | int optional_p) | |
1042e4c0 SS |
13179 | { |
13180 | extern int tracepoint_count; | |
13181 | struct breakpoint *t; | |
13182 | int tpnum; | |
13183 | char *instring = arg == NULL ? NULL : *arg; | |
13184 | ||
197f0a60 TT |
13185 | if (state) |
13186 | { | |
13187 | gdb_assert (!state->finished); | |
13188 | tpnum = get_number_or_range (state); | |
13189 | } | |
13190 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
13191 | { |
13192 | if (optional_p) | |
13193 | tpnum = tracepoint_count; | |
13194 | else | |
13195 | error_no_arg (_("tracepoint number")); | |
13196 | } | |
13197 | else | |
197f0a60 | 13198 | tpnum = get_number (arg); |
1042e4c0 SS |
13199 | |
13200 | if (tpnum <= 0) | |
13201 | { | |
13202 | if (instring && *instring) | |
13203 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
13204 | instring); | |
13205 | else | |
3e43a32a MS |
13206 | printf_filtered (_("Tracepoint argument missing " |
13207 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
13208 | return NULL; |
13209 | } | |
13210 | ||
13211 | ALL_TRACEPOINTS (t) | |
13212 | if (t->number == tpnum) | |
13213 | { | |
d9b3f62e | 13214 | return (struct tracepoint *) t; |
1042e4c0 SS |
13215 | } |
13216 | ||
1042e4c0 SS |
13217 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
13218 | return NULL; | |
13219 | } | |
13220 | ||
d9b3f62e PA |
13221 | void |
13222 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
13223 | { | |
13224 | if (b->thread != -1) | |
13225 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
13226 | ||
13227 | if (b->task != 0) | |
13228 | fprintf_unfiltered (fp, " task %d", b->task); | |
13229 | ||
13230 | fprintf_unfiltered (fp, "\n"); | |
13231 | } | |
13232 | ||
6149aea9 PA |
13233 | /* Save information on user settable breakpoints (watchpoints, etc) to |
13234 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
13235 | on each breakpoint and only include the ones for which it returns | |
13236 | non-zero. */ | |
13237 | ||
1042e4c0 | 13238 | static void |
6149aea9 PA |
13239 | save_breakpoints (char *filename, int from_tty, |
13240 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
13241 | { |
13242 | struct breakpoint *tp; | |
6149aea9 | 13243 | int any = 0; |
a7bdde9e | 13244 | char *pathname; |
1042e4c0 | 13245 | struct cleanup *cleanup; |
a7bdde9e | 13246 | struct ui_file *fp; |
6149aea9 | 13247 | int extra_trace_bits = 0; |
1042e4c0 | 13248 | |
6149aea9 PA |
13249 | if (filename == 0 || *filename == 0) |
13250 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
13251 | |
13252 | /* See if we have anything to save. */ | |
6149aea9 | 13253 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13254 | { |
6149aea9 | 13255 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13256 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
13257 | continue; |
13258 | ||
13259 | /* If we have a filter, only save the breakpoints it accepts. */ | |
13260 | if (filter && !filter (tp)) | |
13261 | continue; | |
13262 | ||
13263 | any = 1; | |
13264 | ||
13265 | if (is_tracepoint (tp)) | |
13266 | { | |
13267 | extra_trace_bits = 1; | |
13268 | ||
13269 | /* We can stop searching. */ | |
13270 | break; | |
13271 | } | |
1042e4c0 | 13272 | } |
6149aea9 PA |
13273 | |
13274 | if (!any) | |
1042e4c0 | 13275 | { |
6149aea9 | 13276 | warning (_("Nothing to save.")); |
1042e4c0 SS |
13277 | return; |
13278 | } | |
13279 | ||
6149aea9 | 13280 | pathname = tilde_expand (filename); |
1042e4c0 | 13281 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 13282 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 13283 | if (!fp) |
6149aea9 PA |
13284 | error (_("Unable to open file '%s' for saving (%s)"), |
13285 | filename, safe_strerror (errno)); | |
a7bdde9e | 13286 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 13287 | |
6149aea9 PA |
13288 | if (extra_trace_bits) |
13289 | save_trace_state_variables (fp); | |
8bf6485c | 13290 | |
6149aea9 | 13291 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13292 | { |
6149aea9 | 13293 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13294 | if (!user_breakpoint_p (tp)) |
6149aea9 | 13295 | continue; |
8bf6485c | 13296 | |
6149aea9 PA |
13297 | /* If we have a filter, only save the breakpoints it accepts. */ |
13298 | if (filter && !filter (tp)) | |
13299 | continue; | |
13300 | ||
348d480f | 13301 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 13302 | |
6149aea9 PA |
13303 | /* Note, we can't rely on tp->number for anything, as we can't |
13304 | assume the recreated breakpoint numbers will match. Use $bpnum | |
13305 | instead. */ | |
13306 | ||
13307 | if (tp->cond_string) | |
13308 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
13309 | ||
13310 | if (tp->ignore_count) | |
13311 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
13312 | ||
a7bdde9e | 13313 | if (tp->commands) |
1042e4c0 | 13314 | { |
a7bdde9e VP |
13315 | volatile struct gdb_exception ex; |
13316 | ||
6149aea9 | 13317 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 13318 | |
79a45e25 | 13319 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 13320 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 13321 | { |
79a45e25 | 13322 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 13323 | } |
79a45e25 | 13324 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 13325 | |
a7bdde9e VP |
13326 | if (ex.reason < 0) |
13327 | throw_exception (ex); | |
1042e4c0 | 13328 | |
a7bdde9e | 13329 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 13330 | } |
6149aea9 PA |
13331 | |
13332 | if (tp->enable_state == bp_disabled) | |
13333 | fprintf_unfiltered (fp, "disable\n"); | |
13334 | ||
13335 | /* If this is a multi-location breakpoint, check if the locations | |
13336 | should be individually disabled. Watchpoint locations are | |
13337 | special, and not user visible. */ | |
13338 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
13339 | { | |
13340 | struct bp_location *loc; | |
13341 | int n = 1; | |
13342 | ||
13343 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
13344 | if (!loc->enabled) | |
13345 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
13346 | } | |
1042e4c0 | 13347 | } |
8bf6485c | 13348 | |
6149aea9 | 13349 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
13350 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
13351 | ||
1042e4c0 SS |
13352 | do_cleanups (cleanup); |
13353 | if (from_tty) | |
6149aea9 PA |
13354 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
13355 | } | |
13356 | ||
13357 | /* The `save breakpoints' command. */ | |
13358 | ||
13359 | static void | |
13360 | save_breakpoints_command (char *args, int from_tty) | |
13361 | { | |
13362 | save_breakpoints (args, from_tty, NULL); | |
13363 | } | |
13364 | ||
13365 | /* The `save tracepoints' command. */ | |
13366 | ||
13367 | static void | |
13368 | save_tracepoints_command (char *args, int from_tty) | |
13369 | { | |
13370 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
13371 | } |
13372 | ||
13373 | /* Create a vector of all tracepoints. */ | |
13374 | ||
13375 | VEC(breakpoint_p) * | |
eeae04df | 13376 | all_tracepoints (void) |
1042e4c0 SS |
13377 | { |
13378 | VEC(breakpoint_p) *tp_vec = 0; | |
13379 | struct breakpoint *tp; | |
13380 | ||
13381 | ALL_TRACEPOINTS (tp) | |
13382 | { | |
13383 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
13384 | } | |
13385 | ||
13386 | return tp_vec; | |
13387 | } | |
13388 | ||
c906108c | 13389 | \f |
4a64f543 MS |
13390 | /* This help string is used for the break, hbreak, tbreak and thbreak |
13391 | commands. It is defined as a macro to prevent duplication. | |
13392 | COMMAND should be a string constant containing the name of the | |
13393 | command. */ | |
31e2b00f AS |
13394 | #define BREAK_ARGS_HELP(command) \ |
13395 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
13396 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
13397 | If a line number is specified, break at start of code for that line.\n\ | |
13398 | If a function is specified, break at start of code for that function.\n\ | |
13399 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
13400 | With no LOCATION, uses current execution address of the selected\n\ |
13401 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
13402 | \n\ |
13403 | THREADNUM is the number from \"info threads\".\n\ | |
13404 | CONDITION is a boolean expression.\n\ | |
13405 | \n\ | |
d41c0fc8 PA |
13406 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
13407 | conditions are different.\n\ | |
31e2b00f AS |
13408 | \n\ |
13409 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
13410 | ||
44feb3ce TT |
13411 | /* List of subcommands for "catch". */ |
13412 | static struct cmd_list_element *catch_cmdlist; | |
13413 | ||
13414 | /* List of subcommands for "tcatch". */ | |
13415 | static struct cmd_list_element *tcatch_cmdlist; | |
13416 | ||
9ac4176b | 13417 | void |
44feb3ce TT |
13418 | add_catch_command (char *name, char *docstring, |
13419 | void (*sfunc) (char *args, int from_tty, | |
13420 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
13421 | char **(*completer) (struct cmd_list_element *cmd, |
13422 | char *text, char *word), | |
44feb3ce TT |
13423 | void *user_data_catch, |
13424 | void *user_data_tcatch) | |
13425 | { | |
13426 | struct cmd_list_element *command; | |
13427 | ||
13428 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13429 | &catch_cmdlist); | |
13430 | set_cmd_sfunc (command, sfunc); | |
13431 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 13432 | set_cmd_completer (command, completer); |
44feb3ce TT |
13433 | |
13434 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13435 | &tcatch_cmdlist); | |
13436 | set_cmd_sfunc (command, sfunc); | |
13437 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 13438 | set_cmd_completer (command, completer); |
44feb3ce TT |
13439 | } |
13440 | ||
6c95b8df | 13441 | static void |
a79b8f6e | 13442 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 13443 | { |
6c95b8df PA |
13444 | inf->total_syscalls_count = 0; |
13445 | inf->any_syscall_count = 0; | |
13446 | VEC_free (int, inf->syscalls_counts); | |
13447 | } | |
13448 | ||
6149aea9 PA |
13449 | static void |
13450 | save_command (char *arg, int from_tty) | |
13451 | { | |
3e43a32a MS |
13452 | printf_unfiltered (_("\"save\" must be followed by " |
13453 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
13454 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
13455 | } | |
13456 | ||
84f4c1fe PM |
13457 | struct breakpoint * |
13458 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
13459 | void *data) | |
13460 | { | |
35df4500 | 13461 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 13462 | |
35df4500 | 13463 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
13464 | { |
13465 | if ((*callback) (b, data)) | |
13466 | return b; | |
13467 | } | |
13468 | ||
13469 | return NULL; | |
13470 | } | |
13471 | ||
0574c78f GB |
13472 | /* Zero if any of the breakpoint's locations could be a location where |
13473 | functions have been inlined, nonzero otherwise. */ | |
13474 | ||
13475 | static int | |
13476 | is_non_inline_function (struct breakpoint *b) | |
13477 | { | |
13478 | /* The shared library event breakpoint is set on the address of a | |
13479 | non-inline function. */ | |
13480 | if (b->type == bp_shlib_event) | |
13481 | return 1; | |
13482 | ||
13483 | return 0; | |
13484 | } | |
13485 | ||
13486 | /* Nonzero if the specified PC cannot be a location where functions | |
13487 | have been inlined. */ | |
13488 | ||
13489 | int | |
13490 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc) | |
13491 | { | |
13492 | struct breakpoint *b; | |
13493 | struct bp_location *bl; | |
13494 | ||
13495 | ALL_BREAKPOINTS (b) | |
13496 | { | |
13497 | if (!is_non_inline_function (b)) | |
13498 | continue; | |
13499 | ||
13500 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
13501 | { | |
13502 | if (!bl->shlib_disabled | |
13503 | && bpstat_check_location (bl, aspace, pc)) | |
13504 | return 1; | |
13505 | } | |
13506 | } | |
13507 | ||
13508 | return 0; | |
13509 | } | |
13510 | ||
2060206e PA |
13511 | void |
13512 | initialize_breakpoint_ops (void) | |
13513 | { | |
13514 | static int initialized = 0; | |
13515 | ||
13516 | struct breakpoint_ops *ops; | |
13517 | ||
13518 | if (initialized) | |
13519 | return; | |
13520 | initialized = 1; | |
13521 | ||
13522 | /* The breakpoint_ops structure to be inherit by all kinds of | |
13523 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
13524 | internal and momentary breakpoints, etc.). */ | |
13525 | ops = &bkpt_base_breakpoint_ops; | |
13526 | *ops = base_breakpoint_ops; | |
13527 | ops->re_set = bkpt_re_set; | |
13528 | ops->insert_location = bkpt_insert_location; | |
13529 | ops->remove_location = bkpt_remove_location; | |
13530 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
13531 | ||
13532 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
13533 | ops = &bkpt_breakpoint_ops; | |
13534 | *ops = bkpt_base_breakpoint_ops; | |
13535 | ops->re_set = bkpt_re_set; | |
13536 | ops->resources_needed = bkpt_resources_needed; | |
13537 | ops->print_it = bkpt_print_it; | |
13538 | ops->print_mention = bkpt_print_mention; | |
13539 | ops->print_recreate = bkpt_print_recreate; | |
13540 | ||
13541 | /* Ranged breakpoints. */ | |
13542 | ops = &ranged_breakpoint_ops; | |
13543 | *ops = bkpt_breakpoint_ops; | |
13544 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
13545 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
13546 | ops->print_it = print_it_ranged_breakpoint; | |
13547 | ops->print_one = print_one_ranged_breakpoint; | |
13548 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
13549 | ops->print_mention = print_mention_ranged_breakpoint; | |
13550 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
13551 | ||
13552 | /* Internal breakpoints. */ | |
13553 | ops = &internal_breakpoint_ops; | |
13554 | *ops = bkpt_base_breakpoint_ops; | |
13555 | ops->re_set = internal_bkpt_re_set; | |
13556 | ops->check_status = internal_bkpt_check_status; | |
13557 | ops->print_it = internal_bkpt_print_it; | |
13558 | ops->print_mention = internal_bkpt_print_mention; | |
13559 | ||
13560 | /* Momentary breakpoints. */ | |
13561 | ops = &momentary_breakpoint_ops; | |
13562 | *ops = bkpt_base_breakpoint_ops; | |
13563 | ops->re_set = momentary_bkpt_re_set; | |
13564 | ops->check_status = momentary_bkpt_check_status; | |
13565 | ops->print_it = momentary_bkpt_print_it; | |
13566 | ops->print_mention = momentary_bkpt_print_mention; | |
13567 | ||
13568 | /* GNU v3 exception catchpoints. */ | |
13569 | ops = &gnu_v3_exception_catchpoint_ops; | |
13570 | *ops = bkpt_breakpoint_ops; | |
13571 | ops->print_it = print_it_exception_catchpoint; | |
13572 | ops->print_one = print_one_exception_catchpoint; | |
13573 | ops->print_mention = print_mention_exception_catchpoint; | |
13574 | ops->print_recreate = print_recreate_exception_catchpoint; | |
13575 | ||
13576 | /* Watchpoints. */ | |
13577 | ops = &watchpoint_breakpoint_ops; | |
13578 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 13579 | ops->dtor = dtor_watchpoint; |
2060206e PA |
13580 | ops->re_set = re_set_watchpoint; |
13581 | ops->insert_location = insert_watchpoint; | |
13582 | ops->remove_location = remove_watchpoint; | |
13583 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
13584 | ops->check_status = check_status_watchpoint; | |
13585 | ops->resources_needed = resources_needed_watchpoint; | |
13586 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
13587 | ops->print_it = print_it_watchpoint; | |
13588 | ops->print_mention = print_mention_watchpoint; | |
13589 | ops->print_recreate = print_recreate_watchpoint; | |
13590 | ||
13591 | /* Masked watchpoints. */ | |
13592 | ops = &masked_watchpoint_breakpoint_ops; | |
13593 | *ops = watchpoint_breakpoint_ops; | |
13594 | ops->insert_location = insert_masked_watchpoint; | |
13595 | ops->remove_location = remove_masked_watchpoint; | |
13596 | ops->resources_needed = resources_needed_masked_watchpoint; | |
13597 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
13598 | ops->print_it = print_it_masked_watchpoint; | |
13599 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
13600 | ops->print_mention = print_mention_masked_watchpoint; | |
13601 | ops->print_recreate = print_recreate_masked_watchpoint; | |
13602 | ||
13603 | /* Tracepoints. */ | |
13604 | ops = &tracepoint_breakpoint_ops; | |
13605 | *ops = base_breakpoint_ops; | |
13606 | ops->re_set = tracepoint_re_set; | |
13607 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
13608 | ops->print_one_detail = tracepoint_print_one_detail; | |
13609 | ops->print_mention = tracepoint_print_mention; | |
13610 | ops->print_recreate = tracepoint_print_recreate; | |
13611 | ||
13612 | /* Fork catchpoints. */ | |
13613 | ops = &catch_fork_breakpoint_ops; | |
13614 | *ops = base_breakpoint_ops; | |
13615 | ops->insert_location = insert_catch_fork; | |
13616 | ops->remove_location = remove_catch_fork; | |
13617 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
13618 | ops->print_it = print_it_catch_fork; | |
13619 | ops->print_one = print_one_catch_fork; | |
13620 | ops->print_mention = print_mention_catch_fork; | |
13621 | ops->print_recreate = print_recreate_catch_fork; | |
13622 | ||
13623 | /* Vfork catchpoints. */ | |
13624 | ops = &catch_vfork_breakpoint_ops; | |
13625 | *ops = base_breakpoint_ops; | |
13626 | ops->insert_location = insert_catch_vfork; | |
13627 | ops->remove_location = remove_catch_vfork; | |
13628 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
13629 | ops->print_it = print_it_catch_vfork; | |
13630 | ops->print_one = print_one_catch_vfork; | |
13631 | ops->print_mention = print_mention_catch_vfork; | |
13632 | ops->print_recreate = print_recreate_catch_vfork; | |
13633 | ||
13634 | /* Exec catchpoints. */ | |
13635 | ops = &catch_exec_breakpoint_ops; | |
13636 | *ops = base_breakpoint_ops; | |
13637 | ops->dtor = dtor_catch_exec; | |
13638 | ops->insert_location = insert_catch_exec; | |
13639 | ops->remove_location = remove_catch_exec; | |
13640 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
13641 | ops->print_it = print_it_catch_exec; | |
13642 | ops->print_one = print_one_catch_exec; | |
13643 | ops->print_mention = print_mention_catch_exec; | |
13644 | ops->print_recreate = print_recreate_catch_exec; | |
13645 | ||
13646 | /* Syscall catchpoints. */ | |
13647 | ops = &catch_syscall_breakpoint_ops; | |
13648 | *ops = base_breakpoint_ops; | |
13649 | ops->dtor = dtor_catch_syscall; | |
13650 | ops->insert_location = insert_catch_syscall; | |
13651 | ops->remove_location = remove_catch_syscall; | |
13652 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
13653 | ops->print_it = print_it_catch_syscall; | |
13654 | ops->print_one = print_one_catch_syscall; | |
13655 | ops->print_mention = print_mention_catch_syscall; | |
13656 | ops->print_recreate = print_recreate_catch_syscall; | |
13657 | } | |
13658 | ||
c906108c | 13659 | void |
fba45db2 | 13660 | _initialize_breakpoint (void) |
c906108c SS |
13661 | { |
13662 | struct cmd_list_element *c; | |
13663 | ||
2060206e PA |
13664 | initialize_breakpoint_ops (); |
13665 | ||
84acb35a | 13666 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 13667 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 13668 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 13669 | |
17450429 PP |
13670 | breakpoint_objfile_key = register_objfile_data (); |
13671 | ||
c906108c SS |
13672 | breakpoint_chain = 0; |
13673 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
13674 | before a breakpoint is set. */ | |
13675 | breakpoint_count = 0; | |
13676 | ||
1042e4c0 SS |
13677 | tracepoint_count = 0; |
13678 | ||
1bedd215 AC |
13679 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
13680 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
13681 | Usage is `ignore N COUNT'.")); | |
c906108c | 13682 | if (xdb_commands) |
c5aa993b | 13683 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 13684 | |
1bedd215 AC |
13685 | add_com ("commands", class_breakpoint, commands_command, _("\ |
13686 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
13687 | Give breakpoint number as argument after \"commands\".\n\ |
13688 | With no argument, the targeted breakpoint is the last one set.\n\ | |
13689 | The commands themselves follow starting on the next line.\n\ | |
13690 | Type a line containing \"end\" to indicate the end of them.\n\ | |
13691 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 13692 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 13693 | |
1bedd215 AC |
13694 | add_com ("condition", class_breakpoint, condition_command, _("\ |
13695 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 13696 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 13697 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 13698 | |
1bedd215 | 13699 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 13700 | Set a temporary breakpoint.\n\ |
c906108c SS |
13701 | Like \"break\" except the breakpoint is only temporary,\n\ |
13702 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
13703 | by using \"enable delete\" on the breakpoint number.\n\ |
13704 | \n" | |
13705 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 13706 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13707 | |
1bedd215 | 13708 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 13709 | Set a hardware assisted breakpoint.\n\ |
c906108c | 13710 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
13711 | some target hardware may not have this support.\n\ |
13712 | \n" | |
13713 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 13714 | set_cmd_completer (c, location_completer); |
c906108c | 13715 | |
1bedd215 | 13716 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 13717 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 13718 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
13719 | so it will be deleted when hit.\n\ |
13720 | \n" | |
13721 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 13722 | set_cmd_completer (c, location_completer); |
c906108c | 13723 | |
1bedd215 AC |
13724 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
13725 | Enable some breakpoints.\n\ | |
c906108c SS |
13726 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13727 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13728 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13729 | With a subcommand you can enable temporarily."), |
c906108c SS |
13730 | &enablelist, "enable ", 1, &cmdlist); |
13731 | if (xdb_commands) | |
1bedd215 AC |
13732 | add_com ("ab", class_breakpoint, enable_command, _("\ |
13733 | Enable some breakpoints.\n\ | |
c906108c SS |
13734 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13735 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13736 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13737 | With a subcommand you can enable temporarily.")); |
c906108c SS |
13738 | |
13739 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
13740 | ||
84951ab5 | 13741 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 13742 | Enable some breakpoints.\n\ |
c906108c SS |
13743 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13744 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13745 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 13746 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 13747 | |
1a966eab AC |
13748 | add_cmd ("once", no_class, enable_once_command, _("\ |
13749 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13750 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13751 | &enablebreaklist); |
13752 | ||
1a966eab AC |
13753 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13754 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13755 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13756 | &enablebreaklist); |
13757 | ||
1a966eab AC |
13758 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13759 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13760 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13761 | &enablelist); |
13762 | ||
1a966eab AC |
13763 | add_cmd ("once", no_class, enable_once_command, _("\ |
13764 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13765 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13766 | &enablelist); |
13767 | ||
1bedd215 AC |
13768 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
13769 | Disable some breakpoints.\n\ | |
c906108c SS |
13770 | Arguments are breakpoint numbers with spaces in between.\n\ |
13771 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13772 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
13773 | &disablelist, "disable ", 1, &cmdlist); |
13774 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
13775 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
13776 | if (xdb_commands) | |
1bedd215 AC |
13777 | add_com ("sb", class_breakpoint, disable_command, _("\ |
13778 | Disable some breakpoints.\n\ | |
c906108c SS |
13779 | Arguments are breakpoint numbers with spaces in between.\n\ |
13780 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13781 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 13782 | |
1a966eab AC |
13783 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
13784 | Disable some breakpoints.\n\ | |
c906108c SS |
13785 | Arguments are breakpoint numbers with spaces in between.\n\ |
13786 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13787 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 13788 | This command may be abbreviated \"disable\"."), |
c906108c SS |
13789 | &disablelist); |
13790 | ||
1bedd215 AC |
13791 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
13792 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13793 | Arguments are breakpoint numbers with spaces in between.\n\ |
13794 | To delete all breakpoints, give no argument.\n\ | |
13795 | \n\ | |
13796 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 13797 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
13798 | &deletelist, "delete ", 1, &cmdlist); |
13799 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 13800 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 13801 | if (xdb_commands) |
1bedd215 AC |
13802 | add_com ("db", class_breakpoint, delete_command, _("\ |
13803 | Delete some breakpoints.\n\ | |
c906108c | 13804 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 13805 | To delete all breakpoints, give no argument.\n")); |
c906108c | 13806 | |
1a966eab AC |
13807 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
13808 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13809 | Arguments are breakpoint numbers with spaces in between.\n\ |
13810 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 13811 | This command may be abbreviated \"delete\"."), |
c906108c SS |
13812 | &deletelist); |
13813 | ||
1bedd215 AC |
13814 | add_com ("clear", class_breakpoint, clear_command, _("\ |
13815 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
13816 | Argument may be line number, function name, or \"*\" and an address.\n\ |
13817 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
13818 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
13819 | If an address is specified, breakpoints at that address are cleared.\n\ |
13820 | \n\ | |
13821 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
13822 | is executing in.\n\ |
13823 | \n\ | |
1bedd215 | 13824 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 13825 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 13826 | |
1bedd215 | 13827 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
13828 | Set breakpoint at specified line or function.\n" |
13829 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 13830 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13831 | |
c906108c SS |
13832 | add_com_alias ("b", "break", class_run, 1); |
13833 | add_com_alias ("br", "break", class_run, 1); | |
13834 | add_com_alias ("bre", "break", class_run, 1); | |
13835 | add_com_alias ("brea", "break", class_run, 1); | |
13836 | ||
7681d515 PM |
13837 | if (xdb_commands) |
13838 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
13839 | |
13840 | if (dbx_commands) | |
13841 | { | |
1bedd215 AC |
13842 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
13843 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
13844 | &stoplist, "stop ", 1, &cmdlist); |
13845 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 13846 | _("Break in function or address."), &stoplist); |
c5aa993b | 13847 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 13848 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
13849 | add_com ("status", class_info, breakpoints_info, _("\ |
13850 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13851 | The \"Type\" column indicates one of:\n\ |
13852 | \tbreakpoint - normal breakpoint\n\ | |
13853 | \twatchpoint - watchpoint\n\ | |
13854 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13855 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13856 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13857 | address and file/line number respectively.\n\ |
13858 | \n\ | |
13859 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13860 | are set to the address of the last breakpoint listed unless the command\n\ |
13861 | is prefixed with \"server \".\n\n\ | |
c906108c | 13862 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13863 | breakpoint set.")); |
c906108c SS |
13864 | } |
13865 | ||
1bedd215 | 13866 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 13867 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
13868 | The \"Type\" column indicates one of:\n\ |
13869 | \tbreakpoint - normal breakpoint\n\ | |
13870 | \twatchpoint - watchpoint\n\ | |
13871 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13872 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13873 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13874 | address and file/line number respectively.\n\ |
13875 | \n\ | |
13876 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13877 | are set to the address of the last breakpoint listed unless the command\n\ |
13878 | is prefixed with \"server \".\n\n\ | |
c906108c | 13879 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13880 | breakpoint set.")); |
c906108c | 13881 | |
6b04bdb7 MS |
13882 | add_info_alias ("b", "breakpoints", 1); |
13883 | ||
c906108c | 13884 | if (xdb_commands) |
1bedd215 AC |
13885 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
13886 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13887 | The \"Type\" column indicates one of:\n\ |
13888 | \tbreakpoint - normal breakpoint\n\ | |
13889 | \twatchpoint - watchpoint\n\ | |
13890 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13891 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13892 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13893 | address and file/line number respectively.\n\ |
13894 | \n\ | |
13895 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13896 | are set to the address of the last breakpoint listed unless the command\n\ |
13897 | is prefixed with \"server \".\n\n\ | |
c906108c | 13898 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13899 | breakpoint set.")); |
c906108c | 13900 | |
1a966eab AC |
13901 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
13902 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13903 | The \"Type\" column indicates one of:\n\ |
13904 | \tbreakpoint - normal breakpoint\n\ | |
13905 | \twatchpoint - watchpoint\n\ | |
13906 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
13907 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
13908 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
13909 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
13910 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
13911 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
13912 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
13913 | address and file/line number respectively.\n\ |
13914 | \n\ | |
13915 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13916 | are set to the address of the last breakpoint listed unless the command\n\ |
13917 | is prefixed with \"server \".\n\n\ | |
c906108c | 13918 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 13919 | breakpoint set."), |
c906108c SS |
13920 | &maintenanceinfolist); |
13921 | ||
44feb3ce TT |
13922 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
13923 | Set catchpoints to catch events."), | |
13924 | &catch_cmdlist, "catch ", | |
13925 | 0/*allow-unknown*/, &cmdlist); | |
13926 | ||
13927 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
13928 | Set temporary catchpoints to catch events."), | |
13929 | &tcatch_cmdlist, "tcatch ", | |
13930 | 0/*allow-unknown*/, &cmdlist); | |
13931 | ||
13932 | /* Add catch and tcatch sub-commands. */ | |
13933 | add_catch_command ("catch", _("\ | |
13934 | Catch an exception, when caught.\n\ | |
13935 | With an argument, catch only exceptions with the given name."), | |
13936 | catch_catch_command, | |
a96d9b2e | 13937 | NULL, |
44feb3ce TT |
13938 | CATCH_PERMANENT, |
13939 | CATCH_TEMPORARY); | |
13940 | add_catch_command ("throw", _("\ | |
13941 | Catch an exception, when thrown.\n\ | |
13942 | With an argument, catch only exceptions with the given name."), | |
13943 | catch_throw_command, | |
a96d9b2e | 13944 | NULL, |
44feb3ce TT |
13945 | CATCH_PERMANENT, |
13946 | CATCH_TEMPORARY); | |
13947 | add_catch_command ("fork", _("Catch calls to fork."), | |
13948 | catch_fork_command_1, | |
a96d9b2e | 13949 | NULL, |
44feb3ce TT |
13950 | (void *) (uintptr_t) catch_fork_permanent, |
13951 | (void *) (uintptr_t) catch_fork_temporary); | |
13952 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
13953 | catch_fork_command_1, | |
a96d9b2e | 13954 | NULL, |
44feb3ce TT |
13955 | (void *) (uintptr_t) catch_vfork_permanent, |
13956 | (void *) (uintptr_t) catch_vfork_temporary); | |
13957 | add_catch_command ("exec", _("Catch calls to exec."), | |
13958 | catch_exec_command_1, | |
a96d9b2e SDJ |
13959 | NULL, |
13960 | CATCH_PERMANENT, | |
13961 | CATCH_TEMPORARY); | |
13962 | add_catch_command ("syscall", _("\ | |
13963 | Catch system calls by their names and/or numbers.\n\ | |
13964 | Arguments say which system calls to catch. If no arguments\n\ | |
13965 | are given, every system call will be caught.\n\ | |
13966 | Arguments, if given, should be one or more system call names\n\ | |
13967 | (if your system supports that), or system call numbers."), | |
13968 | catch_syscall_command_1, | |
13969 | catch_syscall_completer, | |
44feb3ce TT |
13970 | CATCH_PERMANENT, |
13971 | CATCH_TEMPORARY); | |
c5aa993b | 13972 | |
1bedd215 AC |
13973 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
13974 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13975 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 13976 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13977 | an expression changes.\n\ |
13978 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13979 | the memory to which it refers.")); | |
65d12d83 | 13980 | set_cmd_completer (c, expression_completer); |
c906108c | 13981 | |
1bedd215 AC |
13982 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
13983 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 13984 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 13985 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13986 | an expression is read.\n\ |
13987 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13988 | the memory to which it refers.")); | |
65d12d83 | 13989 | set_cmd_completer (c, expression_completer); |
c906108c | 13990 | |
1bedd215 AC |
13991 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
13992 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13993 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 13994 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13995 | an expression is either read or written.\n\ |
13996 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13997 | the memory to which it refers.")); | |
65d12d83 | 13998 | set_cmd_completer (c, expression_completer); |
c906108c | 13999 | |
d77f58be | 14000 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 14001 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14002 | |
920d2a44 AC |
14003 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14004 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14005 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14006 | &can_use_hw_watchpoints, _("\ | |
14007 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14008 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14009 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14010 | such is available. (However, any hardware watchpoints that were\n\ | |
14011 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14012 | hardware.)"), |
14013 | NULL, | |
920d2a44 | 14014 | show_can_use_hw_watchpoints, |
85c07804 | 14015 | &setlist, &showlist); |
c906108c SS |
14016 | |
14017 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14018 | |
1042e4c0 SS |
14019 | /* Tracepoint manipulation commands. */ |
14020 | ||
14021 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
14022 | Set a tracepoint at specified line or function.\n\ | |
14023 | \n" | |
14024 | BREAK_ARGS_HELP ("trace") "\n\ | |
14025 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14026 | set_cmd_completer (c, location_completer); | |
14027 | ||
14028 | add_com_alias ("tp", "trace", class_alias, 0); | |
14029 | add_com_alias ("tr", "trace", class_alias, 1); | |
14030 | add_com_alias ("tra", "trace", class_alias, 1); | |
14031 | add_com_alias ("trac", "trace", class_alias, 1); | |
14032 | ||
7a697b8d SS |
14033 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
14034 | Set a fast tracepoint at specified line or function.\n\ | |
14035 | \n" | |
14036 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14037 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14038 | set_cmd_completer (c, location_completer); | |
14039 | ||
0fb4aa4b PA |
14040 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
14041 | Set a static tracepoint at specified line, function or marker.\n\ | |
14042 | \n\ | |
14043 | strace [LOCATION] [if CONDITION]\n\ | |
14044 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
14045 | or -m MARKER_ID.\n\ | |
14046 | If a line number is specified, probe the marker at start of code\n\ | |
14047 | for that line. If a function is specified, probe the marker at start\n\ | |
14048 | of code for that function. If an address is specified, probe the marker\n\ | |
14049 | at that exact address. If a marker id is specified, probe the marker\n\ | |
14050 | with that name. With no LOCATION, uses current execution address of\n\ | |
14051 | the selected stack frame.\n\ | |
14052 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
14053 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14054 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14055 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14056 | \n\ | |
14057 | CONDITION is a boolean expression.\n\ | |
14058 | \n\ | |
d41c0fc8 PA |
14059 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14060 | conditions are different.\n\ | |
0fb4aa4b PA |
14061 | \n\ |
14062 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14063 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14064 | set_cmd_completer (c, location_completer); | |
14065 | ||
1042e4c0 | 14066 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 14067 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14068 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14069 | last tracepoint set.")); | |
14070 | ||
14071 | add_info_alias ("tp", "tracepoints", 1); | |
14072 | ||
14073 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
14074 | Delete specified tracepoints.\n\ | |
14075 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14076 | No argument means delete all tracepoints."), | |
14077 | &deletelist); | |
14078 | ||
14079 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14080 | Disable specified tracepoints.\n\ | |
14081 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14082 | No argument means disable all tracepoints."), | |
14083 | &disablelist); | |
14084 | deprecate_cmd (c, "disable"); | |
14085 | ||
14086 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14087 | Enable specified tracepoints.\n\ | |
14088 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14089 | No argument means enable all tracepoints."), | |
14090 | &enablelist); | |
14091 | deprecate_cmd (c, "enable"); | |
14092 | ||
14093 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14094 | Set the passcount for a tracepoint.\n\ | |
14095 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14096 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14097 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14098 | ||
6149aea9 PA |
14099 | add_prefix_cmd ("save", class_breakpoint, save_command, |
14100 | _("Save breakpoint definitions as a script."), | |
14101 | &save_cmdlist, "save ", | |
14102 | 0/*allow-unknown*/, &cmdlist); | |
14103 | ||
14104 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14105 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14106 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14107 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14108 | session to restore them."), | |
14109 | &save_cmdlist); | |
14110 | set_cmd_completer (c, filename_completer); | |
14111 | ||
14112 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14113 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14114 | Use the 'source' command in another debug session to restore them."), |
14115 | &save_cmdlist); | |
1042e4c0 SS |
14116 | set_cmd_completer (c, filename_completer); |
14117 | ||
6149aea9 PA |
14118 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
14119 | deprecate_cmd (c, "save tracepoints"); | |
14120 | ||
1bedd215 | 14121 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14122 | Breakpoint specific settings\n\ |
14123 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14124 | pending breakpoint behavior"), |
fa8d40ab JJ |
14125 | &breakpoint_set_cmdlist, "set breakpoint ", |
14126 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 14127 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14128 | Breakpoint specific settings\n\ |
14129 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14130 | pending breakpoint behavior"), |
fa8d40ab JJ |
14131 | &breakpoint_show_cmdlist, "show breakpoint ", |
14132 | 0/*allow-unknown*/, &showlist); | |
14133 | ||
7915a72c AC |
14134 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14135 | &pending_break_support, _("\ | |
14136 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14137 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14138 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14139 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14140 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14141 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14142 | NULL, |
920d2a44 | 14143 | show_pending_break_support, |
6e1d7d6c AC |
14144 | &breakpoint_set_cmdlist, |
14145 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14146 | |
14147 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14148 | |
14149 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14150 | &automatic_hardware_breakpoints, _("\ | |
14151 | Set automatic usage of hardware breakpoints."), _("\ | |
14152 | Show automatic usage of hardware breakpoints."), _("\ | |
14153 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14154 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14155 | a warning will be emitted for such breakpoints."), | |
14156 | NULL, | |
14157 | show_automatic_hardware_breakpoints, | |
14158 | &breakpoint_set_cmdlist, | |
14159 | &breakpoint_show_cmdlist); | |
74960c60 | 14160 | |
33e5cbd6 PA |
14161 | add_setshow_enum_cmd ("always-inserted", class_support, |
14162 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
14163 | Set mode for inserting breakpoints."), _("\ |
14164 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
14165 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
14166 | resumed, and removed when execution stops. When this mode is on,\n\ | |
14167 | breakpoints are inserted immediately and removed only when the user\n\ | |
14168 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
14169 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
14170 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
14171 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
14172 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
14173 | NULL, |
14174 | &show_always_inserted_mode, | |
14175 | &breakpoint_set_cmdlist, | |
14176 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
14177 | |
14178 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
14179 | Set a breakpoint for an address range.\n\ | |
14180 | break-range START-LOCATION, END-LOCATION\n\ | |
14181 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14182 | LINENUM, for that line in the current file,\n\ | |
14183 | FILE:LINENUM, for that line in that file,\n\ | |
14184 | +OFFSET, for that number of lines after the current line\n\ | |
14185 | or the start of the range\n\ | |
14186 | FUNCTION, for the first line in that function,\n\ | |
14187 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14188 | *ADDRESS, for the instruction at that address.\n\ | |
14189 | \n\ | |
14190 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14191 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14192 | range (including START-LOCATION and END-LOCATION).")); | |
14193 | ||
765dc015 | 14194 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
14195 | |
14196 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 14197 | } |