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" | |
41 | #include "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" |
c906108c | 68 | |
1042e4c0 SS |
69 | /* readline include files */ |
70 | #include "readline/readline.h" | |
71 | #include "readline/history.h" | |
72 | ||
73 | /* readline defines this. */ | |
74 | #undef savestring | |
75 | ||
034dad6f | 76 | #include "mi/mi-common.h" |
7371cf6d | 77 | #include "python/python.h" |
104c1213 | 78 | |
4a64f543 | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
348d480f PA |
97 | static void breakpoint_re_set_default (struct breakpoint *); |
98 | ||
a14ed312 | 99 | static void clear_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static void catch_command (char *, int); |
c906108c | 102 | |
a9634178 | 103 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 104 | |
98deb0da | 105 | static void break_command_1 (char *, int, int); |
c906108c | 106 | |
a14ed312 | 107 | static void mention (struct breakpoint *); |
c906108c | 108 | |
348d480f PA |
109 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
110 | enum bptype, | |
c0a91b2b | 111 | const struct breakpoint_ops *); |
4a64f543 MS |
112 | /* This function is used in gdbtk sources and thus can not be made |
113 | static. */ | |
63c252f8 | 114 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 115 | struct symtab_and_line, |
c0a91b2b TT |
116 | enum bptype, |
117 | const struct breakpoint_ops *); | |
c906108c | 118 | |
06edf0c0 PA |
119 | static struct breakpoint * |
120 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
121 | enum bptype type, | |
c0a91b2b | 122 | const struct breakpoint_ops *ops); |
06edf0c0 | 123 | |
76897487 KB |
124 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
125 | ||
a6d9a66e UW |
126 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
127 | CORE_ADDR bpaddr, | |
88f7da05 | 128 | enum bptype bptype); |
76897487 | 129 | |
6c95b8df PA |
130 | static void describe_other_breakpoints (struct gdbarch *, |
131 | struct program_space *, CORE_ADDR, | |
5af949e3 | 132 | struct obj_section *, int); |
c906108c | 133 | |
6c95b8df PA |
134 | static int breakpoint_address_match (struct address_space *aspace1, |
135 | CORE_ADDR addr1, | |
136 | struct address_space *aspace2, | |
137 | CORE_ADDR addr2); | |
138 | ||
85d721b8 PA |
139 | static int watchpoint_locations_match (struct bp_location *loc1, |
140 | struct bp_location *loc2); | |
141 | ||
f1310107 TJB |
142 | static int breakpoint_location_address_match (struct bp_location *bl, |
143 | struct address_space *aspace, | |
144 | CORE_ADDR addr); | |
145 | ||
a14ed312 | 146 | static void breakpoints_info (char *, int); |
c906108c | 147 | |
d77f58be SS |
148 | static void watchpoints_info (char *, int); |
149 | ||
e5a67952 MS |
150 | static int breakpoint_1 (char *, int, |
151 | int (*) (const struct breakpoint *)); | |
c906108c | 152 | |
4efb68b1 | 153 | static int breakpoint_cond_eval (void *); |
c906108c | 154 | |
4efb68b1 | 155 | static void cleanup_executing_breakpoints (void *); |
c906108c | 156 | |
a14ed312 | 157 | static void commands_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void condition_command (char *, int); |
c906108c | 160 | |
c5aa993b JM |
161 | typedef enum |
162 | { | |
163 | mark_inserted, | |
164 | mark_uninserted | |
165 | } | |
166 | insertion_state_t; | |
c906108c | 167 | |
0bde7532 | 168 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 169 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 170 | |
e514a9d6 | 171 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 172 | |
4efb68b1 | 173 | static int watchpoint_check (void *); |
c906108c | 174 | |
a14ed312 | 175 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int hw_breakpoint_used_count (void); |
c906108c | 178 | |
a14ed312 | 179 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 180 | |
a14ed312 | 181 | static void hbreak_command (char *, int); |
c906108c | 182 | |
a14ed312 | 183 | static void thbreak_command (char *, int); |
c906108c | 184 | |
51be5b68 | 185 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp); |
c906108c | 186 | |
a14ed312 | 187 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 188 | |
a14ed312 | 189 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 190 | |
a14ed312 | 191 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 192 | |
a14ed312 | 193 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 194 | |
d85310f7 MS |
195 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
196 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 197 | |
a14ed312 | 198 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 199 | |
d03285ec UW |
200 | static void detach_single_step_breakpoints (void); |
201 | ||
6c95b8df PA |
202 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
203 | CORE_ADDR pc); | |
1aafd4da | 204 | |
fe3f5fa8 | 205 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
206 | static void incref_bp_location (struct bp_location *loc); |
207 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 208 | |
39d61571 | 209 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 210 | |
b60e7edf | 211 | static void update_global_location_list (int); |
a5606eee | 212 | |
b60e7edf | 213 | static void update_global_location_list_nothrow (int); |
74960c60 | 214 | |
d77f58be | 215 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
216 | |
217 | static void insert_breakpoint_locations (void); | |
a5606eee | 218 | |
a96d9b2e SDJ |
219 | static int syscall_catchpoint_p (struct breakpoint *b); |
220 | ||
1042e4c0 SS |
221 | static void tracepoints_info (char *, int); |
222 | ||
223 | static void delete_trace_command (char *, int); | |
224 | ||
225 | static void enable_trace_command (char *, int); | |
226 | ||
227 | static void disable_trace_command (char *, int); | |
228 | ||
229 | static void trace_pass_command (char *, int); | |
230 | ||
9c06b0b4 TJB |
231 | static int is_masked_watchpoint (const struct breakpoint *b); |
232 | ||
0fb4aa4b PA |
233 | /* Assuming we're creating a static tracepoint, does S look like a |
234 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
235 | #define is_marker_spec(s) \ | |
f5a8e22b | 236 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 237 | |
2060206e PA |
238 | /* The abstract base class all breakpoint_ops structures inherit |
239 | from. */ | |
240 | static struct breakpoint_ops base_breakpoint_ops; | |
241 | ||
242 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
243 | that are implemented on top of software or hardware breakpoints | |
244 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
245 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
246 | ||
247 | /* Internal breakpoints class type. */ | |
06edf0c0 | 248 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
249 | |
250 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
251 | static struct breakpoint_ops momentary_breakpoint_ops; |
252 | ||
2060206e PA |
253 | /* The breakpoint_ops structure to be used in regular user created |
254 | breakpoints. */ | |
255 | struct breakpoint_ops bkpt_breakpoint_ops; | |
256 | ||
5cea2a26 PA |
257 | /* A reference-counted struct command_line. This lets multiple |
258 | breakpoints share a single command list. */ | |
259 | struct counted_command_line | |
260 | { | |
261 | /* The reference count. */ | |
262 | int refc; | |
263 | ||
264 | /* The command list. */ | |
265 | struct command_line *commands; | |
266 | }; | |
267 | ||
268 | struct command_line * | |
269 | breakpoint_commands (struct breakpoint *b) | |
270 | { | |
271 | return b->commands ? b->commands->commands : NULL; | |
272 | } | |
3daf8fe5 | 273 | |
f3b1572e PA |
274 | /* Flag indicating that a command has proceeded the inferior past the |
275 | current breakpoint. */ | |
276 | ||
277 | static int breakpoint_proceeded; | |
278 | ||
956a9fb9 | 279 | const char * |
2cec12e5 AR |
280 | bpdisp_text (enum bpdisp disp) |
281 | { | |
4a64f543 MS |
282 | /* NOTE: the following values are a part of MI protocol and |
283 | represent values of 'disp' field returned when inferior stops at | |
284 | a breakpoint. */ | |
bc043ef3 | 285 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 286 | |
2cec12e5 AR |
287 | return bpdisps[(int) disp]; |
288 | } | |
c906108c | 289 | |
4a64f543 | 290 | /* Prototypes for exported functions. */ |
c906108c | 291 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 292 | if such is available. */ |
c906108c SS |
293 | static int can_use_hw_watchpoints; |
294 | ||
920d2a44 AC |
295 | static void |
296 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
297 | struct cmd_list_element *c, | |
298 | const char *value) | |
299 | { | |
3e43a32a MS |
300 | fprintf_filtered (file, |
301 | _("Debugger's willingness to use " | |
302 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
303 | value); |
304 | } | |
305 | ||
fa8d40ab JJ |
306 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
307 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 308 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
309 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
310 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
311 | static void |
312 | show_pending_break_support (struct ui_file *file, int from_tty, | |
313 | struct cmd_list_element *c, | |
314 | const char *value) | |
315 | { | |
3e43a32a MS |
316 | fprintf_filtered (file, |
317 | _("Debugger's behavior regarding " | |
318 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
319 | value); |
320 | } | |
fa8d40ab | 321 | |
765dc015 | 322 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 323 | set with "break" but falling in read-only memory. |
765dc015 VP |
324 | If 0, gdb will warn about such breakpoints, but won't automatically |
325 | use hardware breakpoints. */ | |
326 | static int automatic_hardware_breakpoints; | |
327 | static void | |
328 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
329 | struct cmd_list_element *c, | |
330 | const char *value) | |
331 | { | |
3e43a32a MS |
332 | fprintf_filtered (file, |
333 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
334 | value); |
335 | } | |
336 | ||
33e5cbd6 PA |
337 | /* If on, gdb will keep breakpoints inserted even as inferior is |
338 | stopped, and immediately insert any new breakpoints. If off, gdb | |
339 | will insert breakpoints into inferior only when resuming it, and | |
340 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
341 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
342 | ||
343 | static const char always_inserted_auto[] = "auto"; | |
344 | static const char always_inserted_on[] = "on"; | |
345 | static const char always_inserted_off[] = "off"; | |
346 | static const char *always_inserted_enums[] = { | |
347 | always_inserted_auto, | |
348 | always_inserted_off, | |
349 | always_inserted_on, | |
350 | NULL | |
351 | }; | |
352 | static const char *always_inserted_mode = always_inserted_auto; | |
353 | static void | |
74960c60 | 354 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 355 | struct cmd_list_element *c, const char *value) |
74960c60 | 356 | { |
33e5cbd6 | 357 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
358 | fprintf_filtered (file, |
359 | _("Always inserted breakpoint " | |
360 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
361 | value, |
362 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
363 | else | |
3e43a32a MS |
364 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
365 | value); | |
74960c60 VP |
366 | } |
367 | ||
33e5cbd6 PA |
368 | int |
369 | breakpoints_always_inserted_mode (void) | |
370 | { | |
371 | return (always_inserted_mode == always_inserted_on | |
372 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
373 | } | |
765dc015 | 374 | |
a14ed312 | 375 | void _initialize_breakpoint (void); |
c906108c | 376 | |
c906108c SS |
377 | /* Are we executing breakpoint commands? */ |
378 | static int executing_breakpoint_commands; | |
379 | ||
c02f5703 MS |
380 | /* Are overlay event breakpoints enabled? */ |
381 | static int overlay_events_enabled; | |
382 | ||
e09342b5 TJB |
383 | /* See description in breakpoint.h. */ |
384 | int target_exact_watchpoints = 0; | |
385 | ||
c906108c | 386 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 387 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 388 | current breakpoint. */ |
c906108c | 389 | |
5c44784c | 390 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 391 | |
5c44784c JM |
392 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
393 | for (B = breakpoint_chain; \ | |
394 | B ? (TMP=B->next, 1): 0; \ | |
395 | B = TMP) | |
c906108c | 396 | |
4a64f543 MS |
397 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
398 | not provided so update_global_location_list must not be called | |
399 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 400 | |
876fa593 JK |
401 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
402 | for (BP_TMP = bp_location; \ | |
403 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
404 | BP_TMP++) | |
7cc221ef | 405 | |
1042e4c0 SS |
406 | /* Iterator for tracepoints only. */ |
407 | ||
408 | #define ALL_TRACEPOINTS(B) \ | |
409 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 410 | if (is_tracepoint (B)) |
1042e4c0 | 411 | |
7cc221ef | 412 | /* Chains of all breakpoints defined. */ |
c906108c SS |
413 | |
414 | struct breakpoint *breakpoint_chain; | |
415 | ||
876fa593 JK |
416 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
417 | ||
418 | static struct bp_location **bp_location; | |
419 | ||
420 | /* Number of elements of BP_LOCATION. */ | |
421 | ||
422 | static unsigned bp_location_count; | |
423 | ||
4a64f543 MS |
424 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
425 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
426 | result from bp_location_has_shadow. You can use it for roughly | |
427 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
428 | an address you need to read. */ | |
876fa593 JK |
429 | |
430 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
431 | ||
4a64f543 MS |
432 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
433 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
434 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
435 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
436 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
437 | |
438 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 439 | |
4a64f543 MS |
440 | /* The locations that no longer correspond to any breakpoint, unlinked |
441 | from bp_location array, but for which a hit may still be reported | |
442 | by a target. */ | |
20874c92 VP |
443 | VEC(bp_location_p) *moribund_locations = NULL; |
444 | ||
c906108c SS |
445 | /* Number of last breakpoint made. */ |
446 | ||
95a42b64 TT |
447 | static int breakpoint_count; |
448 | ||
86b17b60 PA |
449 | /* The value of `breakpoint_count' before the last command that |
450 | created breakpoints. If the last (break-like) command created more | |
451 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
452 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
453 | static int prev_breakpoint_count; | |
c906108c | 454 | |
1042e4c0 SS |
455 | /* Number of last tracepoint made. */ |
456 | ||
95a42b64 | 457 | static int tracepoint_count; |
1042e4c0 | 458 | |
6149aea9 PA |
459 | static struct cmd_list_element *breakpoint_set_cmdlist; |
460 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 461 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 462 | |
468d015d JJ |
463 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
464 | static int | |
465 | breakpoint_enabled (struct breakpoint *b) | |
466 | { | |
0d381245 | 467 | return (b->enable_state == bp_enabled); |
468d015d JJ |
468 | } |
469 | ||
c906108c SS |
470 | /* Set breakpoint count to NUM. */ |
471 | ||
95a42b64 | 472 | static void |
fba45db2 | 473 | set_breakpoint_count (int num) |
c906108c | 474 | { |
86b17b60 | 475 | prev_breakpoint_count = breakpoint_count; |
c906108c | 476 | breakpoint_count = num; |
4fa62494 | 477 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
478 | } |
479 | ||
86b17b60 PA |
480 | /* Used by `start_rbreak_breakpoints' below, to record the current |
481 | breakpoint count before "rbreak" creates any breakpoint. */ | |
482 | static int rbreak_start_breakpoint_count; | |
483 | ||
95a42b64 TT |
484 | /* Called at the start an "rbreak" command to record the first |
485 | breakpoint made. */ | |
86b17b60 | 486 | |
95a42b64 TT |
487 | void |
488 | start_rbreak_breakpoints (void) | |
489 | { | |
86b17b60 | 490 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
491 | } |
492 | ||
493 | /* Called at the end of an "rbreak" command to record the last | |
494 | breakpoint made. */ | |
86b17b60 | 495 | |
95a42b64 TT |
496 | void |
497 | end_rbreak_breakpoints (void) | |
498 | { | |
86b17b60 | 499 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
500 | } |
501 | ||
4a64f543 | 502 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
503 | |
504 | void | |
fba45db2 | 505 | clear_breakpoint_hit_counts (void) |
c906108c SS |
506 | { |
507 | struct breakpoint *b; | |
508 | ||
509 | ALL_BREAKPOINTS (b) | |
510 | b->hit_count = 0; | |
511 | } | |
512 | ||
9add0f1b TT |
513 | /* Allocate a new counted_command_line with reference count of 1. |
514 | The new structure owns COMMANDS. */ | |
515 | ||
516 | static struct counted_command_line * | |
517 | alloc_counted_command_line (struct command_line *commands) | |
518 | { | |
519 | struct counted_command_line *result | |
520 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 521 | |
9add0f1b TT |
522 | result->refc = 1; |
523 | result->commands = commands; | |
524 | return result; | |
525 | } | |
526 | ||
527 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
528 | ||
529 | static void | |
530 | incref_counted_command_line (struct counted_command_line *cmd) | |
531 | { | |
532 | if (cmd) | |
533 | ++cmd->refc; | |
534 | } | |
535 | ||
536 | /* Decrement reference count. If the reference count reaches 0, | |
537 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
538 | nothing if *CMDP is NULL. */ | |
539 | ||
540 | static void | |
541 | decref_counted_command_line (struct counted_command_line **cmdp) | |
542 | { | |
543 | if (*cmdp) | |
544 | { | |
545 | if (--(*cmdp)->refc == 0) | |
546 | { | |
547 | free_command_lines (&(*cmdp)->commands); | |
548 | xfree (*cmdp); | |
549 | } | |
550 | *cmdp = NULL; | |
551 | } | |
552 | } | |
553 | ||
554 | /* A cleanup function that calls decref_counted_command_line. */ | |
555 | ||
556 | static void | |
557 | do_cleanup_counted_command_line (void *arg) | |
558 | { | |
559 | decref_counted_command_line (arg); | |
560 | } | |
561 | ||
562 | /* Create a cleanup that calls decref_counted_command_line on the | |
563 | argument. */ | |
564 | ||
565 | static struct cleanup * | |
566 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
567 | { | |
568 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
569 | } | |
570 | ||
c906108c SS |
571 | /* Default address, symtab and line to put a breakpoint at |
572 | for "break" command with no arg. | |
4a64f543 | 573 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
574 | not valid, and "break" with no arg is an error. |
575 | ||
576 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
577 | ||
578 | int default_breakpoint_valid; | |
579 | CORE_ADDR default_breakpoint_address; | |
580 | struct symtab *default_breakpoint_symtab; | |
581 | int default_breakpoint_line; | |
6c95b8df PA |
582 | struct program_space *default_breakpoint_pspace; |
583 | ||
c906108c | 584 | \f |
48cb2d85 VP |
585 | /* Return the breakpoint with the specified number, or NULL |
586 | if the number does not refer to an existing breakpoint. */ | |
587 | ||
588 | struct breakpoint * | |
589 | get_breakpoint (int num) | |
590 | { | |
591 | struct breakpoint *b; | |
592 | ||
593 | ALL_BREAKPOINTS (b) | |
594 | if (b->number == num) | |
595 | return b; | |
596 | ||
597 | return NULL; | |
598 | } | |
5c44784c | 599 | |
c906108c | 600 | \f |
adc36818 PM |
601 | |
602 | void | |
603 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
604 | int from_tty) | |
605 | { | |
3a5c3e22 PA |
606 | xfree (b->cond_string); |
607 | b->cond_string = NULL; | |
adc36818 | 608 | |
3a5c3e22 | 609 | if (is_watchpoint (b)) |
adc36818 | 610 | { |
3a5c3e22 PA |
611 | struct watchpoint *w = (struct watchpoint *) b; |
612 | ||
613 | xfree (w->cond_exp); | |
614 | w->cond_exp = NULL; | |
615 | } | |
616 | else | |
617 | { | |
618 | struct bp_location *loc; | |
619 | ||
620 | for (loc = b->loc; loc; loc = loc->next) | |
621 | { | |
622 | xfree (loc->cond); | |
623 | loc->cond = NULL; | |
624 | } | |
adc36818 | 625 | } |
adc36818 PM |
626 | |
627 | if (*exp == 0) | |
628 | { | |
629 | if (from_tty) | |
630 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
631 | } | |
632 | else | |
633 | { | |
634 | char *arg = exp; | |
cc59ec59 | 635 | |
adc36818 PM |
636 | /* I don't know if it matters whether this is the string the user |
637 | typed in or the decompiled expression. */ | |
638 | b->cond_string = xstrdup (arg); | |
639 | b->condition_not_parsed = 0; | |
640 | ||
641 | if (is_watchpoint (b)) | |
642 | { | |
3a5c3e22 PA |
643 | struct watchpoint *w = (struct watchpoint *) b; |
644 | ||
adc36818 PM |
645 | innermost_block = NULL; |
646 | arg = exp; | |
3a5c3e22 | 647 | w->cond_exp = parse_exp_1 (&arg, 0, 0); |
adc36818 PM |
648 | if (*arg) |
649 | error (_("Junk at end of expression")); | |
3a5c3e22 | 650 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
651 | } |
652 | else | |
653 | { | |
3a5c3e22 PA |
654 | struct bp_location *loc; |
655 | ||
adc36818 PM |
656 | for (loc = b->loc; loc; loc = loc->next) |
657 | { | |
658 | arg = exp; | |
659 | loc->cond = | |
660 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
661 | if (*arg) | |
662 | error (_("Junk at end of expression")); | |
663 | } | |
664 | } | |
665 | } | |
666 | breakpoints_changed (); | |
8d3788bd | 667 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
668 | } |
669 | ||
c906108c SS |
670 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
671 | ||
672 | static void | |
fba45db2 | 673 | condition_command (char *arg, int from_tty) |
c906108c | 674 | { |
52f0bd74 | 675 | struct breakpoint *b; |
c906108c | 676 | char *p; |
52f0bd74 | 677 | int bnum; |
c906108c SS |
678 | |
679 | if (arg == 0) | |
e2e0b3e5 | 680 | error_no_arg (_("breakpoint number")); |
c906108c SS |
681 | |
682 | p = arg; | |
683 | bnum = get_number (&p); | |
5c44784c | 684 | if (bnum == 0) |
8a3fe4f8 | 685 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
686 | |
687 | ALL_BREAKPOINTS (b) | |
688 | if (b->number == bnum) | |
2f069f6f | 689 | { |
7371cf6d PM |
690 | /* Check if this breakpoint has a Python object assigned to |
691 | it, and if it has a definition of the "stop" | |
692 | method. This method and conditions entered into GDB from | |
693 | the CLI are mutually exclusive. */ | |
694 | if (b->py_bp_object | |
695 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
696 | error (_("Cannot set a condition where a Python 'stop' " | |
697 | "method has been defined in the breakpoint.")); | |
2566ad2d | 698 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
699 | return; |
700 | } | |
c906108c | 701 | |
8a3fe4f8 | 702 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
703 | } |
704 | ||
a7bdde9e VP |
705 | /* Check that COMMAND do not contain commands that are suitable |
706 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
707 | Throw if any such commands is found. */ |
708 | ||
a7bdde9e VP |
709 | static void |
710 | check_no_tracepoint_commands (struct command_line *commands) | |
711 | { | |
712 | struct command_line *c; | |
cc59ec59 | 713 | |
a7bdde9e VP |
714 | for (c = commands; c; c = c->next) |
715 | { | |
716 | int i; | |
717 | ||
718 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
719 | error (_("The 'while-stepping' command can " |
720 | "only be used for tracepoints")); | |
a7bdde9e VP |
721 | |
722 | for (i = 0; i < c->body_count; ++i) | |
723 | check_no_tracepoint_commands ((c->body_list)[i]); | |
724 | ||
725 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 726 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
727 | command directly. */ |
728 | if (strstr (c->line, "collect ") == c->line) | |
729 | error (_("The 'collect' command can only be used for tracepoints")); | |
730 | ||
51661e93 VP |
731 | if (strstr (c->line, "teval ") == c->line) |
732 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
733 | } |
734 | } | |
735 | ||
d77f58be SS |
736 | /* Encapsulate tests for different types of tracepoints. */ |
737 | ||
d9b3f62e PA |
738 | static int |
739 | is_tracepoint_type (enum bptype type) | |
740 | { | |
741 | return (type == bp_tracepoint | |
742 | || type == bp_fast_tracepoint | |
743 | || type == bp_static_tracepoint); | |
744 | } | |
745 | ||
a7bdde9e | 746 | int |
d77f58be | 747 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 748 | { |
d9b3f62e | 749 | return is_tracepoint_type (b->type); |
a7bdde9e | 750 | } |
d9b3f62e | 751 | |
e5dd4106 | 752 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
753 | breakpoint. This function will throw an exception if a problem is |
754 | found. */ | |
48cb2d85 | 755 | |
95a42b64 TT |
756 | static void |
757 | validate_commands_for_breakpoint (struct breakpoint *b, | |
758 | struct command_line *commands) | |
48cb2d85 | 759 | { |
d77f58be | 760 | if (is_tracepoint (b)) |
a7bdde9e | 761 | { |
4a64f543 MS |
762 | /* We need to verify that each top-level element of commands is |
763 | valid for tracepoints, that there's at most one | |
764 | while-stepping element, and that while-stepping's body has | |
765 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
766 | struct command_line *c; |
767 | struct command_line *while_stepping = 0; | |
768 | for (c = commands; c; c = c->next) | |
769 | { | |
a7bdde9e VP |
770 | if (c->control_type == while_stepping_control) |
771 | { | |
772 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
773 | error (_("The 'while-stepping' command " |
774 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 775 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
776 | error (_("The 'while-stepping' command " |
777 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
778 | |
779 | if (while_stepping) | |
3e43a32a MS |
780 | error (_("The 'while-stepping' command " |
781 | "can be used only once")); | |
a7bdde9e VP |
782 | else |
783 | while_stepping = c; | |
784 | } | |
785 | } | |
786 | if (while_stepping) | |
787 | { | |
788 | struct command_line *c2; | |
789 | ||
790 | gdb_assert (while_stepping->body_count == 1); | |
791 | c2 = while_stepping->body_list[0]; | |
792 | for (; c2; c2 = c2->next) | |
793 | { | |
a7bdde9e VP |
794 | if (c2->control_type == while_stepping_control) |
795 | error (_("The 'while-stepping' command cannot be nested")); | |
796 | } | |
797 | } | |
798 | } | |
799 | else | |
800 | { | |
801 | check_no_tracepoint_commands (commands); | |
802 | } | |
95a42b64 TT |
803 | } |
804 | ||
0fb4aa4b PA |
805 | /* Return a vector of all the static tracepoints set at ADDR. The |
806 | caller is responsible for releasing the vector. */ | |
807 | ||
808 | VEC(breakpoint_p) * | |
809 | static_tracepoints_here (CORE_ADDR addr) | |
810 | { | |
811 | struct breakpoint *b; | |
812 | VEC(breakpoint_p) *found = 0; | |
813 | struct bp_location *loc; | |
814 | ||
815 | ALL_BREAKPOINTS (b) | |
816 | if (b->type == bp_static_tracepoint) | |
817 | { | |
818 | for (loc = b->loc; loc; loc = loc->next) | |
819 | if (loc->address == addr) | |
820 | VEC_safe_push(breakpoint_p, found, b); | |
821 | } | |
822 | ||
823 | return found; | |
824 | } | |
825 | ||
95a42b64 | 826 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 827 | validate that only allowed commands are included. */ |
95a42b64 TT |
828 | |
829 | void | |
4a64f543 MS |
830 | breakpoint_set_commands (struct breakpoint *b, |
831 | struct command_line *commands) | |
95a42b64 TT |
832 | { |
833 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 834 | |
9add0f1b TT |
835 | decref_counted_command_line (&b->commands); |
836 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 837 | breakpoints_changed (); |
8d3788bd | 838 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
839 | } |
840 | ||
45a43567 TT |
841 | /* Set the internal `silent' flag on the breakpoint. Note that this |
842 | is not the same as the "silent" that may appear in the breakpoint's | |
843 | commands. */ | |
844 | ||
845 | void | |
846 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
847 | { | |
848 | int old_silent = b->silent; | |
849 | ||
850 | b->silent = silent; | |
851 | if (old_silent != silent) | |
8d3788bd | 852 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
853 | } |
854 | ||
855 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
856 | breakpoint work for any thread. */ | |
857 | ||
858 | void | |
859 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
860 | { | |
861 | int old_thread = b->thread; | |
862 | ||
863 | b->thread = thread; | |
864 | if (old_thread != thread) | |
8d3788bd | 865 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
866 | } |
867 | ||
868 | /* Set the task for this breakpoint. If TASK is 0, make the | |
869 | breakpoint work for any task. */ | |
870 | ||
871 | void | |
872 | breakpoint_set_task (struct breakpoint *b, int task) | |
873 | { | |
874 | int old_task = b->task; | |
875 | ||
876 | b->task = task; | |
877 | if (old_task != task) | |
8d3788bd | 878 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
879 | } |
880 | ||
95a42b64 TT |
881 | void |
882 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
883 | { |
884 | struct breakpoint *b = closure; | |
cc59ec59 | 885 | |
a7bdde9e VP |
886 | validate_actionline (&line, b); |
887 | } | |
888 | ||
95a42b64 TT |
889 | /* A structure used to pass information through |
890 | map_breakpoint_numbers. */ | |
891 | ||
892 | struct commands_info | |
893 | { | |
894 | /* True if the command was typed at a tty. */ | |
895 | int from_tty; | |
86b17b60 PA |
896 | |
897 | /* The breakpoint range spec. */ | |
898 | char *arg; | |
899 | ||
95a42b64 TT |
900 | /* Non-NULL if the body of the commands are being read from this |
901 | already-parsed command. */ | |
902 | struct command_line *control; | |
86b17b60 | 903 | |
95a42b64 TT |
904 | /* The command lines read from the user, or NULL if they have not |
905 | yet been read. */ | |
906 | struct counted_command_line *cmd; | |
907 | }; | |
908 | ||
909 | /* A callback for map_breakpoint_numbers that sets the commands for | |
910 | commands_command. */ | |
911 | ||
c906108c | 912 | static void |
95a42b64 | 913 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 914 | { |
95a42b64 | 915 | struct commands_info *info = data; |
c906108c | 916 | |
95a42b64 TT |
917 | if (info->cmd == NULL) |
918 | { | |
919 | struct command_line *l; | |
5c44784c | 920 | |
95a42b64 TT |
921 | if (info->control != NULL) |
922 | l = copy_command_lines (info->control->body_list[0]); | |
923 | else | |
86b17b60 PA |
924 | { |
925 | struct cleanup *old_chain; | |
926 | char *str; | |
c5aa993b | 927 | |
3e43a32a MS |
928 | str = xstrprintf (_("Type commands for breakpoint(s) " |
929 | "%s, one per line."), | |
86b17b60 PA |
930 | info->arg); |
931 | ||
932 | old_chain = make_cleanup (xfree, str); | |
933 | ||
934 | l = read_command_lines (str, | |
935 | info->from_tty, 1, | |
d77f58be | 936 | (is_tracepoint (b) |
86b17b60 PA |
937 | ? check_tracepoint_command : 0), |
938 | b); | |
939 | ||
940 | do_cleanups (old_chain); | |
941 | } | |
a7bdde9e | 942 | |
95a42b64 TT |
943 | info->cmd = alloc_counted_command_line (l); |
944 | } | |
945 | ||
946 | /* If a breakpoint was on the list more than once, we don't need to | |
947 | do anything. */ | |
948 | if (b->commands != info->cmd) | |
949 | { | |
950 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
951 | incref_counted_command_line (info->cmd); | |
952 | decref_counted_command_line (&b->commands); | |
953 | b->commands = info->cmd; | |
954 | breakpoints_changed (); | |
8d3788bd | 955 | observer_notify_breakpoint_modified (b); |
c5aa993b | 956 | } |
95a42b64 TT |
957 | } |
958 | ||
959 | static void | |
4a64f543 MS |
960 | commands_command_1 (char *arg, int from_tty, |
961 | struct command_line *control) | |
95a42b64 TT |
962 | { |
963 | struct cleanup *cleanups; | |
964 | struct commands_info info; | |
965 | ||
966 | info.from_tty = from_tty; | |
967 | info.control = control; | |
968 | info.cmd = NULL; | |
969 | /* If we read command lines from the user, then `info' will hold an | |
970 | extra reference to the commands that we must clean up. */ | |
971 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
972 | ||
973 | if (arg == NULL || !*arg) | |
974 | { | |
86b17b60 | 975 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
976 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
977 | breakpoint_count); | |
95a42b64 TT |
978 | else if (breakpoint_count > 0) |
979 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
980 | else |
981 | { | |
982 | /* So that we don't try to free the incoming non-NULL | |
983 | argument in the cleanup below. Mapping breakpoint | |
984 | numbers will fail in this case. */ | |
985 | arg = NULL; | |
986 | } | |
95a42b64 | 987 | } |
9766ced4 SS |
988 | else |
989 | /* The command loop has some static state, so we need to preserve | |
990 | our argument. */ | |
991 | arg = xstrdup (arg); | |
86b17b60 PA |
992 | |
993 | if (arg != NULL) | |
994 | make_cleanup (xfree, arg); | |
995 | ||
996 | info.arg = arg; | |
95a42b64 TT |
997 | |
998 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
999 | ||
1000 | if (info.cmd == NULL) | |
1001 | error (_("No breakpoints specified.")); | |
1002 | ||
1003 | do_cleanups (cleanups); | |
1004 | } | |
1005 | ||
1006 | static void | |
1007 | commands_command (char *arg, int from_tty) | |
1008 | { | |
1009 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1010 | } |
40c03ae8 EZ |
1011 | |
1012 | /* Like commands_command, but instead of reading the commands from | |
1013 | input stream, takes them from an already parsed command structure. | |
1014 | ||
1015 | This is used by cli-script.c to DTRT with breakpoint commands | |
1016 | that are part of if and while bodies. */ | |
1017 | enum command_control_type | |
1018 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1019 | { | |
95a42b64 TT |
1020 | commands_command_1 (arg, 0, cmd); |
1021 | return simple_control; | |
40c03ae8 | 1022 | } |
876fa593 JK |
1023 | |
1024 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1025 | ||
1026 | static int | |
1027 | bp_location_has_shadow (struct bp_location *bl) | |
1028 | { | |
1029 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1030 | return 0; | |
1031 | if (!bl->inserted) | |
1032 | return 0; | |
1033 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1034 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1035 | return 0; |
1036 | return 1; | |
1037 | } | |
1038 | ||
8defab1a | 1039 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1040 | by replacing any memory breakpoints with their shadowed contents. |
1041 | ||
1042 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
1043 | bl->address - bp_location_placed_address_before_address_max |
1044 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1045 | The range we were requested to resolve shadows for is: |
1046 | memaddr ... memaddr + len | |
1047 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1048 | memaddr + len <= (bl->address |
1049 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1050 | and: |
35df4500 | 1051 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1052 | |
8defab1a DJ |
1053 | void |
1054 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1055 | { |
4a64f543 MS |
1056 | /* Left boundary, right boundary and median element of our binary |
1057 | search. */ | |
876fa593 JK |
1058 | unsigned bc_l, bc_r, bc; |
1059 | ||
4a64f543 MS |
1060 | /* Find BC_L which is a leftmost element which may affect BUF |
1061 | content. It is safe to report lower value but a failure to | |
1062 | report higher one. */ | |
876fa593 JK |
1063 | |
1064 | bc_l = 0; | |
1065 | bc_r = bp_location_count; | |
1066 | while (bc_l + 1 < bc_r) | |
1067 | { | |
35df4500 | 1068 | struct bp_location *bl; |
876fa593 JK |
1069 | |
1070 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1071 | bl = bp_location[bc]; |
876fa593 | 1072 | |
4a64f543 MS |
1073 | /* Check first BL->ADDRESS will not overflow due to the added |
1074 | constant. Then advance the left boundary only if we are sure | |
1075 | the BC element can in no way affect the BUF content (MEMADDR | |
1076 | to MEMADDR + LEN range). | |
876fa593 | 1077 | |
4a64f543 MS |
1078 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1079 | offset so that we cannot miss a breakpoint with its shadow | |
1080 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1081 | |
35df4500 TJB |
1082 | if ((bl->address + bp_location_shadow_len_after_address_max |
1083 | >= bl->address) | |
1084 | && (bl->address + bp_location_shadow_len_after_address_max | |
1085 | <= memaddr)) | |
876fa593 JK |
1086 | bc_l = bc; |
1087 | else | |
1088 | bc_r = bc; | |
1089 | } | |
1090 | ||
128070bb PA |
1091 | /* Due to the binary search above, we need to make sure we pick the |
1092 | first location that's at BC_L's address. E.g., if there are | |
1093 | multiple locations at the same address, BC_L may end up pointing | |
1094 | at a duplicate location, and miss the "master"/"inserted" | |
1095 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1096 | B: | |
1097 | ||
1098 | L1@A, L2@A, L3@B, ... | |
1099 | ||
1100 | BC_L could end up pointing at location L2, while the "master" | |
1101 | location could be L1. Since the `loc->inserted' flag is only set | |
1102 | on "master" locations, we'd forget to restore the shadow of L1 | |
1103 | and L2. */ | |
1104 | while (bc_l > 0 | |
1105 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1106 | bc_l--; | |
1107 | ||
876fa593 JK |
1108 | /* Now do full processing of the found relevant range of elements. */ |
1109 | ||
1110 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1111 | { |
35df4500 | 1112 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1113 | CORE_ADDR bp_addr = 0; |
1114 | int bp_size = 0; | |
1115 | int bptoffset = 0; | |
1116 | ||
35df4500 TJB |
1117 | /* bp_location array has BL->OWNER always non-NULL. */ |
1118 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1119 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1120 | bl->owner->number); |
ffce0d52 | 1121 | |
e5dd4106 | 1122 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1123 | content. */ |
1124 | ||
35df4500 TJB |
1125 | if (bl->address >= bp_location_placed_address_before_address_max |
1126 | && memaddr + len <= (bl->address | |
1127 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1128 | break; |
1129 | ||
35df4500 | 1130 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1131 | continue; |
35df4500 | 1132 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1133 | current_program_space->aspace, 0)) |
1134 | continue; | |
1135 | ||
c5aa993b JM |
1136 | /* Addresses and length of the part of the breakpoint that |
1137 | we need to copy. */ | |
35df4500 TJB |
1138 | bp_addr = bl->target_info.placed_address; |
1139 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1140 | |
c5aa993b JM |
1141 | if (bp_addr + bp_size <= memaddr) |
1142 | /* The breakpoint is entirely before the chunk of memory we | |
1143 | are reading. */ | |
1144 | continue; | |
8defab1a | 1145 | |
c5aa993b JM |
1146 | if (bp_addr >= memaddr + len) |
1147 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1148 | reading. */ |
c5aa993b | 1149 | continue; |
c5aa993b | 1150 | |
8defab1a DJ |
1151 | /* Offset within shadow_contents. */ |
1152 | if (bp_addr < memaddr) | |
1153 | { | |
1154 | /* Only copy the second part of the breakpoint. */ | |
1155 | bp_size -= memaddr - bp_addr; | |
1156 | bptoffset = memaddr - bp_addr; | |
1157 | bp_addr = memaddr; | |
1158 | } | |
c5aa993b | 1159 | |
8defab1a DJ |
1160 | if (bp_addr + bp_size > memaddr + len) |
1161 | { | |
1162 | /* Only copy the first part of the breakpoint. */ | |
1163 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1164 | } | |
c5aa993b | 1165 | |
8defab1a | 1166 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1167 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1168 | } |
c906108c | 1169 | } |
c906108c | 1170 | \f |
c5aa993b | 1171 | |
60e1c644 PA |
1172 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1173 | ||
a5606eee | 1174 | static int |
d77f58be | 1175 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1176 | { |
1177 | return (bpt->type == bp_hardware_watchpoint | |
1178 | || bpt->type == bp_read_watchpoint | |
1179 | || bpt->type == bp_access_watchpoint); | |
1180 | } | |
7270d8f2 | 1181 | |
60e1c644 PA |
1182 | /* Return true if BPT is of any watchpoint kind, hardware or |
1183 | software. */ | |
1184 | ||
3a5c3e22 | 1185 | int |
d77f58be | 1186 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1187 | { |
1188 | return (is_hardware_watchpoint (bpt) | |
1189 | || bpt->type == bp_watchpoint); | |
1190 | } | |
1191 | ||
3a5c3e22 PA |
1192 | /* Returns true if the current thread and its running state are safe |
1193 | to evaluate or update watchpoint B. Watchpoints on local | |
1194 | expressions need to be evaluated in the context of the thread that | |
1195 | was current when the watchpoint was created, and, that thread needs | |
1196 | to be stopped to be able to select the correct frame context. | |
1197 | Watchpoints on global expressions can be evaluated on any thread, | |
1198 | and in any state. It is presently left to the target allowing | |
1199 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1200 | |
1201 | static int | |
3a5c3e22 | 1202 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 PA |
1203 | { |
1204 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1205 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1206 | && !is_executing (inferior_ptid))); | |
1207 | } | |
1208 | ||
d0fb5eae JK |
1209 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1210 | associated bp_watchpoint_scope breakpoint. */ | |
1211 | ||
1212 | static void | |
3a5c3e22 | 1213 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1214 | { |
3a5c3e22 | 1215 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1216 | |
1217 | if (b->related_breakpoint != b) | |
1218 | { | |
1219 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1220 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1221 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1222 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1223 | b->related_breakpoint = b; | |
1224 | } | |
1225 | b->disposition = disp_del_at_next_stop; | |
1226 | } | |
1227 | ||
567e1b4e JB |
1228 | /* Assuming that B is a watchpoint: |
1229 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1230 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1231 | - Evaluate the condition if there is one, and store the result |
1232 | in b->loc->cond. | |
a5606eee VP |
1233 | - Update the list of values that must be watched in B->loc. |
1234 | ||
4a64f543 MS |
1235 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1236 | nothing. If this is local watchpoint that is out of scope, delete | |
1237 | it. | |
1238 | ||
1239 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1240 | removed + inserted on each stop here. Normal breakpoints must | |
1241 | never be removed because they might be missed by a running thread | |
1242 | when debugging in non-stop mode. On the other hand, hardware | |
1243 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1244 | to each LWP since they are stored in each LWP's hardware debug | |
1245 | registers. Therefore, such LWP must be stopped first in order to | |
1246 | be able to modify its hardware watchpoints. | |
1247 | ||
1248 | Hardware watchpoints must be reset exactly once after being | |
1249 | presented to the user. It cannot be done sooner, because it would | |
1250 | reset the data used to present the watchpoint hit to the user. And | |
1251 | it must not be done later because it could display the same single | |
1252 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1253 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1254 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1255 | not user-visible - its hit is suppressed if the memory content has | |
1256 | not changed. | |
1257 | ||
1258 | The following constraints influence the location where we can reset | |
1259 | hardware watchpoints: | |
1260 | ||
1261 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1262 | called several times when GDB stops. | |
1263 | ||
1264 | [linux] | |
1265 | * Multiple hardware watchpoints can be hit at the same time, | |
1266 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1267 | hit at a time as the reason for stopping, and all the other hits | |
1268 | are presented later, one after the other, each time the user | |
1269 | requests the execution to be resumed. Execution is not resumed | |
1270 | for the threads still having pending hit event stored in | |
1271 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1272 | the inferior on the first stop the thread hit event is kept being | |
1273 | reported from its cached value by linux_nat_stopped_data_address | |
1274 | until the real thread resume happens after the watchpoint gets | |
1275 | presented and thus its LWP_INFO->STATUS gets reset. | |
1276 | ||
1277 | Therefore the hardware watchpoint hit can get safely reset on the | |
1278 | watchpoint removal from inferior. */ | |
a79d3c27 | 1279 | |
b40ce68a | 1280 | static void |
3a5c3e22 | 1281 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1282 | { |
a5606eee | 1283 | int within_current_scope; |
a5606eee | 1284 | struct frame_id saved_frame_id; |
66076460 | 1285 | int frame_saved; |
a5606eee | 1286 | |
f6bc2008 PA |
1287 | /* If this is a local watchpoint, we only want to check if the |
1288 | watchpoint frame is in scope if the current thread is the thread | |
1289 | that was used to create the watchpoint. */ | |
1290 | if (!watchpoint_in_thread_scope (b)) | |
1291 | return; | |
1292 | ||
3a5c3e22 | 1293 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1294 | return; |
1295 | ||
66076460 | 1296 | frame_saved = 0; |
a5606eee VP |
1297 | |
1298 | /* Determine if the watchpoint is within scope. */ | |
1299 | if (b->exp_valid_block == NULL) | |
1300 | within_current_scope = 1; | |
1301 | else | |
1302 | { | |
b5db5dfc UW |
1303 | struct frame_info *fi = get_current_frame (); |
1304 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1305 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1306 | ||
1307 | /* If we're in a function epilogue, unwinding may not work | |
1308 | properly, so do not attempt to recreate locations at this | |
1309 | point. See similar comments in watchpoint_check. */ | |
1310 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1311 | return; | |
66076460 DJ |
1312 | |
1313 | /* Save the current frame's ID so we can restore it after | |
1314 | evaluating the watchpoint expression on its own frame. */ | |
1315 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1316 | took a frame parameter, so that we didn't have to change the | |
1317 | selected frame. */ | |
1318 | frame_saved = 1; | |
1319 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1320 | ||
a5606eee VP |
1321 | fi = frame_find_by_id (b->watchpoint_frame); |
1322 | within_current_scope = (fi != NULL); | |
1323 | if (within_current_scope) | |
1324 | select_frame (fi); | |
1325 | } | |
1326 | ||
b5db5dfc UW |
1327 | /* We don't free locations. They are stored in the bp_location array |
1328 | and update_global_location_list will eventually delete them and | |
1329 | remove breakpoints if needed. */ | |
3a5c3e22 | 1330 | b->base.loc = NULL; |
b5db5dfc | 1331 | |
a5606eee VP |
1332 | if (within_current_scope && reparse) |
1333 | { | |
1334 | char *s; | |
d63d0675 | 1335 | |
a5606eee VP |
1336 | if (b->exp) |
1337 | { | |
1338 | xfree (b->exp); | |
1339 | b->exp = NULL; | |
1340 | } | |
d63d0675 | 1341 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1342 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1343 | /* If the meaning of expression itself changed, the old value is | |
1344 | no longer relevant. We don't want to report a watchpoint hit | |
1345 | to the user when the old value and the new value may actually | |
1346 | be completely different objects. */ | |
1347 | value_free (b->val); | |
fa4727a6 DJ |
1348 | b->val = NULL; |
1349 | b->val_valid = 0; | |
60e1c644 PA |
1350 | |
1351 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1352 | expression is stored in the breakpoint object, not in the | |
1353 | locations (re)created below. */ | |
3a5c3e22 | 1354 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1355 | { |
1356 | if (b->cond_exp != NULL) | |
1357 | { | |
1358 | xfree (b->cond_exp); | |
1359 | b->cond_exp = NULL; | |
1360 | } | |
1361 | ||
3a5c3e22 | 1362 | s = b->base.cond_string; |
60e1c644 PA |
1363 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); |
1364 | } | |
a5606eee | 1365 | } |
a5606eee VP |
1366 | |
1367 | /* If we failed to parse the expression, for example because | |
1368 | it refers to a global variable in a not-yet-loaded shared library, | |
1369 | don't try to insert watchpoint. We don't automatically delete | |
1370 | such watchpoint, though, since failure to parse expression | |
1371 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1372 | if ( !target_has_execution) |
1373 | { | |
1374 | /* Without execution, memory can't change. No use to try and | |
1375 | set watchpoint locations. The watchpoint will be reset when | |
1376 | the target gains execution, through breakpoint_re_set. */ | |
1377 | } | |
1378 | else if (within_current_scope && b->exp) | |
a5606eee | 1379 | { |
0cf6dd15 | 1380 | int pc = 0; |
fa4727a6 | 1381 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1382 | struct program_space *frame_pspace; |
a5606eee | 1383 | |
0cf6dd15 | 1384 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1385 | |
a5606eee VP |
1386 | /* Avoid setting b->val if it's already set. The meaning of |
1387 | b->val is 'the last value' user saw, and we should update | |
1388 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1389 | happens, the code that reports it updates b->val directly. |
1390 | We don't keep track of the memory value for masked | |
1391 | watchpoints. */ | |
3a5c3e22 | 1392 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1393 | { |
1394 | b->val = v; | |
1395 | b->val_valid = 1; | |
1396 | } | |
a5606eee | 1397 | |
2d134ed3 PA |
1398 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1399 | ||
a5606eee | 1400 | /* Look at each value on the value chain. */ |
9fa40276 | 1401 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1402 | { |
1403 | /* If it's a memory location, and GDB actually needed | |
1404 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1405 | must watch it. If the first value returned is |
1406 | still lazy, that means an error occurred reading it; | |
1407 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1408 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1409 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1410 | { |
1411 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1412 | |
a5606eee VP |
1413 | /* We only watch structs and arrays if user asked |
1414 | for it explicitly, never if they just happen to | |
1415 | appear in the middle of some value chain. */ | |
fa4727a6 | 1416 | if (v == result |
a5606eee VP |
1417 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1418 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1419 | { | |
1420 | CORE_ADDR addr; | |
1421 | int len, type; | |
1422 | struct bp_location *loc, **tmp; | |
1423 | ||
42ae5230 | 1424 | addr = value_address (v); |
a5606eee VP |
1425 | len = TYPE_LENGTH (value_type (v)); |
1426 | type = hw_write; | |
3a5c3e22 | 1427 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1428 | type = hw_read; |
3a5c3e22 | 1429 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1430 | type = hw_access; |
3a5c3e22 PA |
1431 | |
1432 | loc = allocate_bp_location (&b->base); | |
1433 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1434 | ; |
1435 | *tmp = loc; | |
a6d9a66e | 1436 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1437 | |
1438 | loc->pspace = frame_pspace; | |
a5606eee VP |
1439 | loc->address = addr; |
1440 | loc->length = len; | |
1441 | loc->watchpoint_type = type; | |
1442 | } | |
1443 | } | |
9fa40276 TJB |
1444 | } |
1445 | ||
1446 | /* Change the type of breakpoint between hardware assisted or | |
1447 | an ordinary watchpoint depending on the hardware support | |
1448 | and free hardware slots. REPARSE is set when the inferior | |
1449 | is started. */ | |
a9634178 | 1450 | if (reparse) |
9fa40276 | 1451 | { |
e09342b5 | 1452 | int reg_cnt; |
9fa40276 TJB |
1453 | enum bp_loc_type loc_type; |
1454 | struct bp_location *bl; | |
a5606eee | 1455 | |
a9634178 | 1456 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1457 | |
1458 | if (reg_cnt) | |
9fa40276 TJB |
1459 | { |
1460 | int i, target_resources_ok, other_type_used; | |
1461 | ||
a9634178 TJB |
1462 | /* Use an exact watchpoint when there's only one memory region to be |
1463 | watched, and only one debug register is needed to watch it. */ | |
1464 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1465 | ||
9fa40276 | 1466 | /* We need to determine how many resources are already |
e09342b5 TJB |
1467 | used for all other hardware watchpoints plus this one |
1468 | to see if we still have enough resources to also fit | |
1469 | this watchpoint in as well. To guarantee the | |
1470 | hw_watchpoint_used_count call below counts this | |
1471 | watchpoint, make sure that it is marked as a hardware | |
1472 | watchpoint. */ | |
3a5c3e22 PA |
1473 | if (b->base.type == bp_watchpoint) |
1474 | b->base.type = bp_hardware_watchpoint; | |
9fa40276 | 1475 | |
3a5c3e22 | 1476 | i = hw_watchpoint_used_count (b->base.type, &other_type_used); |
e09342b5 | 1477 | target_resources_ok = target_can_use_hardware_watchpoint |
3a5c3e22 | 1478 | (b->base.type, i, other_type_used); |
e09342b5 | 1479 | if (target_resources_ok <= 0) |
a9634178 | 1480 | { |
3a5c3e22 | 1481 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1482 | |
1483 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1484 | error (_("Target does not support this type of " |
1485 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1486 | else if (target_resources_ok < 0 && !sw_mode) |
1487 | error (_("There are not enough available hardware " | |
1488 | "resources for this watchpoint.")); | |
a9634178 | 1489 | else |
3a5c3e22 | 1490 | b->base.type = bp_watchpoint; |
a9634178 | 1491 | } |
9fa40276 | 1492 | } |
3a5c3e22 | 1493 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1494 | error (_("Expression cannot be implemented with " |
1495 | "read/access watchpoint.")); | |
9fa40276 | 1496 | else |
3a5c3e22 | 1497 | b->base.type = bp_watchpoint; |
9fa40276 | 1498 | |
3a5c3e22 | 1499 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1500 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1501 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1502 | bl->loc_type = loc_type; |
1503 | } | |
1504 | ||
1505 | for (v = val_chain; v; v = next) | |
1506 | { | |
a5606eee VP |
1507 | next = value_next (v); |
1508 | if (v != b->val) | |
1509 | value_free (v); | |
1510 | } | |
1511 | ||
c7437ca6 PA |
1512 | /* If a software watchpoint is not watching any memory, then the |
1513 | above left it without any location set up. But, | |
1514 | bpstat_stop_status requires a location to be able to report | |
1515 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1516 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1517 | { |
3a5c3e22 PA |
1518 | struct breakpoint *base = &b->base; |
1519 | base->loc = allocate_bp_location (base); | |
1520 | base->loc->pspace = frame_pspace; | |
1521 | base->loc->address = -1; | |
1522 | base->loc->length = -1; | |
1523 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1524 | } |
a5606eee VP |
1525 | } |
1526 | else if (!within_current_scope) | |
7270d8f2 | 1527 | { |
ac74f770 MS |
1528 | printf_filtered (_("\ |
1529 | Watchpoint %d deleted because the program has left the block\n\ | |
1530 | in which its expression is valid.\n"), | |
3a5c3e22 | 1531 | b->base.number); |
d0fb5eae | 1532 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1533 | } |
a5606eee VP |
1534 | |
1535 | /* Restore the selected frame. */ | |
66076460 DJ |
1536 | if (frame_saved) |
1537 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1538 | } |
1539 | ||
a5606eee | 1540 | |
74960c60 VP |
1541 | /* Returns 1 iff breakpoint location should be |
1542 | inserted in the inferior. */ | |
1543 | static int | |
35df4500 | 1544 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1545 | { |
35df4500 | 1546 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1547 | return 0; |
1548 | ||
35df4500 | 1549 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1550 | return 0; |
1551 | ||
35df4500 | 1552 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1553 | return 0; |
1554 | ||
56710373 PA |
1555 | /* This is set for example, when we're attached to the parent of a |
1556 | vfork, and have detached from the child. The child is running | |
1557 | free, and we expect it to do an exec or exit, at which point the | |
1558 | OS makes the parent schedulable again (and the target reports | |
1559 | that the vfork is done). Until the child is done with the shared | |
1560 | memory region, do not insert breakpoints in the parent, otherwise | |
1561 | the child could still trip on the parent's breakpoints. Since | |
1562 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1563 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1564 | return 0; |
1565 | ||
1042e4c0 SS |
1566 | /* Tracepoints are inserted by the target at a time of its choosing, |
1567 | not by us. */ | |
35df4500 | 1568 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1569 | return 0; |
1570 | ||
74960c60 VP |
1571 | return 1; |
1572 | } | |
1573 | ||
35df4500 TJB |
1574 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1575 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1576 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1577 | |
4a64f543 MS |
1578 | NOTE drow/2003-09-09: This routine could be broken down to an |
1579 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1580 | static int |
35df4500 | 1581 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1582 | struct ui_file *tmp_error_stream, |
fa3a767f | 1583 | int *disabled_breaks, |
26bb91f3 | 1584 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1585 | { |
1586 | int val = 0; | |
1587 | ||
35df4500 | 1588 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1589 | return 0; |
1590 | ||
8181d85f | 1591 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1592 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1593 | bl->target_info.placed_address = bl->address; | |
1594 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1595 | bl->target_info.length = bl->length; |
8181d85f | 1596 | |
35df4500 TJB |
1597 | if (bl->loc_type == bp_loc_software_breakpoint |
1598 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1599 | { |
35df4500 | 1600 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1601 | { |
1602 | /* If the explicitly specified breakpoint type | |
1603 | is not hardware breakpoint, check the memory map to see | |
1604 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1605 | |
765dc015 VP |
1606 | Two important cases are: |
1607 | - location type is not hardware breakpoint, memory | |
1608 | is readonly. We change the type of the location to | |
1609 | hardware breakpoint. | |
4a64f543 MS |
1610 | - location type is hardware breakpoint, memory is |
1611 | read-write. This means we've previously made the | |
1612 | location hardware one, but then the memory map changed, | |
1613 | so we undo. | |
765dc015 | 1614 | |
4a64f543 MS |
1615 | When breakpoints are removed, remove_breakpoints will use |
1616 | location types we've just set here, the only possible | |
1617 | problem is that memory map has changed during running | |
1618 | program, but it's not going to work anyway with current | |
1619 | gdb. */ | |
765dc015 | 1620 | struct mem_region *mr |
35df4500 | 1621 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1622 | |
1623 | if (mr) | |
1624 | { | |
1625 | if (automatic_hardware_breakpoints) | |
1626 | { | |
765dc015 VP |
1627 | enum bp_loc_type new_type; |
1628 | ||
1629 | if (mr->attrib.mode != MEM_RW) | |
1630 | new_type = bp_loc_hardware_breakpoint; | |
1631 | else | |
1632 | new_type = bp_loc_software_breakpoint; | |
1633 | ||
35df4500 | 1634 | if (new_type != bl->loc_type) |
765dc015 VP |
1635 | { |
1636 | static int said = 0; | |
cc59ec59 | 1637 | |
35df4500 | 1638 | bl->loc_type = new_type; |
765dc015 VP |
1639 | if (!said) |
1640 | { | |
3e43a32a MS |
1641 | fprintf_filtered (gdb_stdout, |
1642 | _("Note: automatically using " | |
1643 | "hardware breakpoints for " | |
1644 | "read-only addresses.\n")); | |
765dc015 VP |
1645 | said = 1; |
1646 | } | |
1647 | } | |
1648 | } | |
35df4500 | 1649 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1650 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1651 | warning (_("cannot set software breakpoint " |
1652 | "at readonly address %s"), | |
35df4500 | 1653 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1654 | } |
1655 | } | |
1656 | ||
879bfdc2 DJ |
1657 | /* First check to see if we have to handle an overlay. */ |
1658 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1659 | || bl->section == NULL |
1660 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1661 | { |
1662 | /* No overlay handling: just set the breakpoint. */ | |
1663 | ||
348d480f | 1664 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1665 | } |
1666 | else | |
1667 | { | |
4a64f543 | 1668 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1669 | Shall we set a breakpoint at the LMA? */ |
1670 | if (!overlay_events_enabled) | |
1671 | { | |
1672 | /* Yes -- overlay event support is not active, | |
1673 | so we must try to set a breakpoint at the LMA. | |
1674 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1675 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1676 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1677 | bl->owner->number); |
879bfdc2 DJ |
1678 | else |
1679 | { | |
35df4500 TJB |
1680 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1681 | bl->section); | |
879bfdc2 | 1682 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1683 | bl->overlay_target_info = bl->target_info; |
1684 | bl->overlay_target_info.placed_address = addr; | |
1685 | val = target_insert_breakpoint (bl->gdbarch, | |
1686 | &bl->overlay_target_info); | |
879bfdc2 | 1687 | if (val != 0) |
99361f52 | 1688 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1689 | "Overlay breakpoint %d " |
1690 | "failed: in ROM?\n", | |
35df4500 | 1691 | bl->owner->number); |
879bfdc2 DJ |
1692 | } |
1693 | } | |
1694 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1695 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1696 | { |
1697 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 1698 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1699 | } |
1700 | else | |
1701 | { | |
1702 | /* No. This breakpoint will not be inserted. | |
1703 | No error, but do not mark the bp as 'inserted'. */ | |
1704 | return 0; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | if (val) | |
1709 | { | |
1710 | /* Can't set the breakpoint. */ | |
35df4500 | 1711 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1712 | { |
4a64f543 | 1713 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1714 | val = 0; |
35df4500 | 1715 | bl->shlib_disabled = 1; |
8d3788bd | 1716 | observer_notify_breakpoint_modified (bl->owner); |
879bfdc2 DJ |
1717 | if (!*disabled_breaks) |
1718 | { | |
1719 | fprintf_unfiltered (tmp_error_stream, | |
1720 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1721 | bl->owner->number); |
879bfdc2 | 1722 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1723 | "Temporarily disabling shared " |
1724 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1725 | } |
1726 | *disabled_breaks = 1; | |
1727 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1728 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1729 | } |
1730 | else | |
879bfdc2 | 1731 | { |
35df4500 | 1732 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1733 | { |
1734 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1735 | fprintf_unfiltered (tmp_error_stream, |
1736 | "Cannot insert hardware " | |
1737 | "breakpoint %d.\n", | |
35df4500 | 1738 | bl->owner->number); |
879bfdc2 DJ |
1739 | } |
1740 | else | |
1741 | { | |
1742 | fprintf_unfiltered (tmp_error_stream, | |
1743 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1744 | bl->owner->number); |
879bfdc2 DJ |
1745 | fprintf_filtered (tmp_error_stream, |
1746 | "Error accessing memory address "); | |
35df4500 | 1747 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1748 | tmp_error_stream); |
879bfdc2 DJ |
1749 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1750 | safe_strerror (val)); | |
1751 | } | |
1752 | ||
1753 | } | |
1754 | } | |
1755 | else | |
35df4500 | 1756 | bl->inserted = 1; |
879bfdc2 DJ |
1757 | |
1758 | return val; | |
1759 | } | |
1760 | ||
35df4500 | 1761 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1762 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1763 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1764 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1765 | { |
77b06cd7 TJB |
1766 | gdb_assert (bl->owner->ops != NULL |
1767 | && bl->owner->ops->insert_location != NULL); | |
1768 | ||
1769 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1770 | |
1771 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1772 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1773 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1774 | { |
1775 | struct bp_location *loc, **loc_temp; | |
1776 | ||
1777 | /* But don't try to insert it, if there's already another | |
1778 | hw_access location that would be considered a duplicate | |
1779 | of this one. */ | |
1780 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1781 | if (loc != bl |
85d721b8 | 1782 | && loc->watchpoint_type == hw_access |
35df4500 | 1783 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1784 | { |
35df4500 TJB |
1785 | bl->duplicate = 1; |
1786 | bl->inserted = 1; | |
1787 | bl->target_info = loc->target_info; | |
1788 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1789 | val = 0; |
1790 | break; | |
1791 | } | |
1792 | ||
1793 | if (val == 1) | |
1794 | { | |
77b06cd7 TJB |
1795 | bl->watchpoint_type = hw_access; |
1796 | val = bl->owner->ops->insert_location (bl); | |
1797 | ||
1798 | if (val) | |
1799 | /* Back to the original value. */ | |
1800 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1801 | } |
1802 | } | |
1803 | ||
35df4500 | 1804 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1805 | } |
1806 | ||
35df4500 | 1807 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1808 | { |
77b06cd7 TJB |
1809 | gdb_assert (bl->owner->ops != NULL |
1810 | && bl->owner->ops->insert_location != NULL); | |
1811 | ||
1812 | val = bl->owner->ops->insert_location (bl); | |
1813 | if (val) | |
1814 | { | |
1815 | bl->owner->enable_state = bp_disabled; | |
1816 | ||
1817 | if (val == 1) | |
1818 | warning (_("\ | |
1819 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1820 | of catchpoint."), bl->owner->number); | |
1821 | else | |
1822 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1823 | } | |
1824 | ||
1825 | bl->inserted = (val == 0); | |
1640b821 DJ |
1826 | |
1827 | /* We've already printed an error message if there was a problem | |
1828 | inserting this catchpoint, and we've disabled the catchpoint, | |
1829 | so just return success. */ | |
1830 | return 0; | |
879bfdc2 DJ |
1831 | } |
1832 | ||
1833 | return 0; | |
1834 | } | |
1835 | ||
6c95b8df PA |
1836 | /* This function is called when program space PSPACE is about to be |
1837 | deleted. It takes care of updating breakpoints to not reference | |
1838 | PSPACE anymore. */ | |
1839 | ||
1840 | void | |
1841 | breakpoint_program_space_exit (struct program_space *pspace) | |
1842 | { | |
1843 | struct breakpoint *b, *b_temp; | |
876fa593 | 1844 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1845 | |
1846 | /* Remove any breakpoint that was set through this program space. */ | |
1847 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1848 | { | |
1849 | if (b->pspace == pspace) | |
1850 | delete_breakpoint (b); | |
1851 | } | |
1852 | ||
1853 | /* Breakpoints set through other program spaces could have locations | |
1854 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1855 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1856 | { |
1857 | struct bp_location *tmp; | |
1858 | ||
1859 | if (loc->pspace == pspace) | |
1860 | { | |
2bdf28a0 | 1861 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1862 | if (loc->owner->loc == loc) |
1863 | loc->owner->loc = loc->next; | |
1864 | else | |
1865 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1866 | if (tmp->next == loc) | |
1867 | { | |
1868 | tmp->next = loc->next; | |
1869 | break; | |
1870 | } | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | /* Now update the global location list to permanently delete the | |
1875 | removed locations above. */ | |
1876 | update_global_location_list (0); | |
1877 | } | |
1878 | ||
74960c60 VP |
1879 | /* Make sure all breakpoints are inserted in inferior. |
1880 | Throws exception on any error. | |
1881 | A breakpoint that is already inserted won't be inserted | |
1882 | again, so calling this function twice is safe. */ | |
1883 | void | |
1884 | insert_breakpoints (void) | |
1885 | { | |
1886 | struct breakpoint *bpt; | |
1887 | ||
1888 | ALL_BREAKPOINTS (bpt) | |
1889 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
1890 | { |
1891 | struct watchpoint *w = (struct watchpoint *) bpt; | |
1892 | ||
1893 | update_watchpoint (w, 0 /* don't reparse. */); | |
1894 | } | |
74960c60 | 1895 | |
b60e7edf | 1896 | update_global_location_list (1); |
74960c60 | 1897 | |
c35b1492 PA |
1898 | /* update_global_location_list does not insert breakpoints when |
1899 | always_inserted_mode is not enabled. Explicitly insert them | |
1900 | now. */ | |
1901 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1902 | insert_breakpoint_locations (); |
1903 | } | |
1904 | ||
c906108c SS |
1905 | /* insert_breakpoints is used when starting or continuing the program. |
1906 | remove_breakpoints is used when the program stops. | |
1907 | Both return zero if successful, | |
1908 | or an `errno' value if could not write the inferior. */ | |
1909 | ||
74960c60 VP |
1910 | static void |
1911 | insert_breakpoint_locations (void) | |
c906108c | 1912 | { |
a5606eee | 1913 | struct breakpoint *bpt; |
35df4500 | 1914 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1915 | int error = 0; |
c906108c SS |
1916 | int val = 0; |
1917 | int disabled_breaks = 0; | |
81d0cc19 | 1918 | int hw_breakpoint_error = 0; |
c906108c | 1919 | |
81d0cc19 | 1920 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1921 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1922 | |
81d0cc19 GS |
1923 | /* Explicitly mark the warning -- this will only be printed if |
1924 | there was an error. */ | |
1925 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1926 | |
1927 | save_current_space_and_thread (); | |
1928 | ||
35df4500 | 1929 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1930 | { |
35df4500 | 1931 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1932 | continue; |
1933 | ||
4a64f543 MS |
1934 | /* There is no point inserting thread-specific breakpoints if |
1935 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1936 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1937 | if (bl->owner->thread != -1 |
1938 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1939 | continue; |
1940 | ||
35df4500 | 1941 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1942 | |
1943 | /* For targets that support global breakpoints, there's no need | |
1944 | to select an inferior to insert breakpoint to. In fact, even | |
1945 | if we aren't attached to any process yet, we should still | |
1946 | insert breakpoints. */ | |
1947 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1948 | && ptid_equal (inferior_ptid, null_ptid)) | |
1949 | continue; | |
1950 | ||
35df4500 | 1951 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1952 | &hw_breakpoint_error); |
1953 | if (val) | |
e236ba44 | 1954 | error = val; |
879bfdc2 | 1955 | } |
c906108c | 1956 | |
4a64f543 MS |
1957 | /* If we failed to insert all locations of a watchpoint, remove |
1958 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1959 | ALL_BREAKPOINTS (bpt) |
1960 | { | |
1961 | int some_failed = 0; | |
1962 | struct bp_location *loc; | |
1963 | ||
1964 | if (!is_hardware_watchpoint (bpt)) | |
1965 | continue; | |
1966 | ||
d6b74ac4 | 1967 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1968 | continue; |
74960c60 VP |
1969 | |
1970 | if (bpt->disposition == disp_del_at_next_stop) | |
1971 | continue; | |
a5606eee VP |
1972 | |
1973 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1974 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1975 | { |
1976 | some_failed = 1; | |
1977 | break; | |
1978 | } | |
1979 | if (some_failed) | |
1980 | { | |
1981 | for (loc = bpt->loc; loc; loc = loc->next) | |
1982 | if (loc->inserted) | |
1983 | remove_breakpoint (loc, mark_uninserted); | |
1984 | ||
1985 | hw_breakpoint_error = 1; | |
1986 | fprintf_unfiltered (tmp_error_stream, | |
1987 | "Could not insert hardware watchpoint %d.\n", | |
1988 | bpt->number); | |
1989 | error = -1; | |
1990 | } | |
1991 | } | |
1992 | ||
e236ba44 | 1993 | if (error) |
81d0cc19 GS |
1994 | { |
1995 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1996 | message about possibly exhausted resources. */ | |
879bfdc2 | 1997 | if (hw_breakpoint_error) |
81d0cc19 | 1998 | { |
c6510018 MS |
1999 | fprintf_unfiltered (tmp_error_stream, |
2000 | "Could not insert hardware breakpoints:\n\ | |
2001 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2002 | } |
81d0cc19 GS |
2003 | target_terminal_ours_for_output (); |
2004 | error_stream (tmp_error_stream); | |
2005 | } | |
f7545552 TT |
2006 | |
2007 | do_cleanups (cleanups); | |
c906108c SS |
2008 | } |
2009 | ||
c906108c | 2010 | int |
fba45db2 | 2011 | remove_breakpoints (void) |
c906108c | 2012 | { |
35df4500 | 2013 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2014 | int val = 0; |
c906108c | 2015 | |
35df4500 | 2016 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2017 | { |
35df4500 TJB |
2018 | if (bl->inserted) |
2019 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 2020 | } |
3a1bae8e | 2021 | return val; |
c906108c SS |
2022 | } |
2023 | ||
6c95b8df PA |
2024 | /* Remove breakpoints of process PID. */ |
2025 | ||
2026 | int | |
2027 | remove_breakpoints_pid (int pid) | |
2028 | { | |
35df4500 | 2029 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2030 | int val; |
2031 | struct inferior *inf = find_inferior_pid (pid); | |
2032 | ||
35df4500 | 2033 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2034 | { |
35df4500 | 2035 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2036 | continue; |
2037 | ||
35df4500 | 2038 | if (bl->inserted) |
6c95b8df | 2039 | { |
35df4500 | 2040 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2041 | if (val != 0) |
2042 | return val; | |
2043 | } | |
2044 | } | |
2045 | return 0; | |
2046 | } | |
2047 | ||
c906108c | 2048 | int |
fba45db2 | 2049 | reattach_breakpoints (int pid) |
c906108c | 2050 | { |
6c95b8df | 2051 | struct cleanup *old_chain; |
35df4500 | 2052 | struct bp_location *bl, **blp_tmp; |
c906108c | 2053 | int val; |
86b887df | 2054 | struct ui_file *tmp_error_stream; |
fa3a767f | 2055 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2056 | struct inferior *inf; |
2057 | struct thread_info *tp; | |
2058 | ||
2059 | tp = any_live_thread_of_process (pid); | |
2060 | if (tp == NULL) | |
2061 | return 1; | |
2062 | ||
2063 | inf = find_inferior_pid (pid); | |
2064 | old_chain = save_inferior_ptid (); | |
2065 | ||
2066 | inferior_ptid = tp->ptid; | |
a4954f26 | 2067 | |
86b887df | 2068 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2069 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2070 | |
35df4500 | 2071 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2072 | { |
35df4500 | 2073 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2074 | continue; |
2075 | ||
35df4500 | 2076 | if (bl->inserted) |
c5aa993b | 2077 | { |
35df4500 TJB |
2078 | bl->inserted = 0; |
2079 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2080 | if (val != 0) |
2081 | { | |
ce696e05 | 2082 | do_cleanups (old_chain); |
c5aa993b JM |
2083 | return val; |
2084 | } | |
2085 | } | |
2086 | } | |
ce696e05 | 2087 | do_cleanups (old_chain); |
c906108c SS |
2088 | return 0; |
2089 | } | |
2090 | ||
e58b0e63 PA |
2091 | static int internal_breakpoint_number = -1; |
2092 | ||
84f4c1fe PM |
2093 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2094 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2095 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2096 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2097 | breakpoint_count and that value incremented. Internal breakpoints |
2098 | do not set the internal var bpnum. */ | |
2099 | static void | |
2100 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2101 | { | |
2102 | if (internal) | |
2103 | b->number = internal_breakpoint_number--; | |
2104 | else | |
2105 | { | |
2106 | set_breakpoint_count (breakpoint_count + 1); | |
2107 | b->number = breakpoint_count; | |
2108 | } | |
2109 | } | |
2110 | ||
e62c965a | 2111 | static struct breakpoint * |
a6d9a66e | 2112 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2113 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2114 | const struct breakpoint_ops *ops) |
e62c965a | 2115 | { |
e62c965a PP |
2116 | struct symtab_and_line sal; |
2117 | struct breakpoint *b; | |
2118 | ||
4a64f543 | 2119 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2120 | |
2121 | sal.pc = address; | |
2122 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2123 | sal.pspace = current_program_space; |
e62c965a | 2124 | |
06edf0c0 | 2125 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2126 | b->number = internal_breakpoint_number--; |
2127 | b->disposition = disp_donttouch; | |
2128 | ||
2129 | return b; | |
2130 | } | |
2131 | ||
17450429 PP |
2132 | static const char *const longjmp_names[] = |
2133 | { | |
2134 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2135 | }; | |
2136 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2137 | ||
2138 | /* Per-objfile data private to breakpoint.c. */ | |
2139 | struct breakpoint_objfile_data | |
2140 | { | |
2141 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2142 | struct minimal_symbol *overlay_msym; | |
2143 | ||
2144 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2145 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2146 | ||
2147 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2148 | struct minimal_symbol *terminate_msym; | |
2149 | ||
2150 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2151 | struct minimal_symbol *exception_msym; | |
2152 | }; | |
2153 | ||
2154 | static const struct objfile_data *breakpoint_objfile_key; | |
2155 | ||
2156 | /* Minimal symbol not found sentinel. */ | |
2157 | static struct minimal_symbol msym_not_found; | |
2158 | ||
2159 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2160 | ||
2161 | static int | |
2162 | msym_not_found_p (const struct minimal_symbol *msym) | |
2163 | { | |
2164 | return msym == &msym_not_found; | |
2165 | } | |
2166 | ||
2167 | /* Return per-objfile data needed by breakpoint.c. | |
2168 | Allocate the data if necessary. */ | |
2169 | ||
2170 | static struct breakpoint_objfile_data * | |
2171 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2172 | { | |
2173 | struct breakpoint_objfile_data *bp_objfile_data; | |
2174 | ||
2175 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2176 | if (bp_objfile_data == NULL) | |
2177 | { | |
2178 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2179 | sizeof (*bp_objfile_data)); | |
2180 | ||
2181 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2182 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2183 | } | |
2184 | return bp_objfile_data; | |
2185 | } | |
2186 | ||
e62c965a | 2187 | static void |
af02033e | 2188 | create_overlay_event_breakpoint (void) |
e62c965a | 2189 | { |
69de3c6a | 2190 | struct objfile *objfile; |
af02033e | 2191 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2192 | |
69de3c6a PP |
2193 | ALL_OBJFILES (objfile) |
2194 | { | |
2195 | struct breakpoint *b; | |
17450429 PP |
2196 | struct breakpoint_objfile_data *bp_objfile_data; |
2197 | CORE_ADDR addr; | |
69de3c6a | 2198 | |
17450429 PP |
2199 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2200 | ||
2201 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2202 | continue; | |
2203 | ||
2204 | if (bp_objfile_data->overlay_msym == NULL) | |
2205 | { | |
2206 | struct minimal_symbol *m; | |
2207 | ||
2208 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2209 | if (m == NULL) | |
2210 | { | |
2211 | /* Avoid future lookups in this objfile. */ | |
2212 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2213 | continue; | |
2214 | } | |
2215 | bp_objfile_data->overlay_msym = m; | |
2216 | } | |
e62c965a | 2217 | |
17450429 PP |
2218 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2219 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2220 | bp_overlay_event, |
2221 | &internal_breakpoint_ops); | |
69de3c6a | 2222 | b->addr_string = xstrdup (func_name); |
e62c965a | 2223 | |
69de3c6a PP |
2224 | if (overlay_debugging == ovly_auto) |
2225 | { | |
2226 | b->enable_state = bp_enabled; | |
2227 | overlay_events_enabled = 1; | |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | b->enable_state = bp_disabled; | |
2232 | overlay_events_enabled = 0; | |
2233 | } | |
e62c965a PP |
2234 | } |
2235 | update_global_location_list (1); | |
2236 | } | |
2237 | ||
0fd8e87f | 2238 | static void |
af02033e | 2239 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2240 | { |
6c95b8df | 2241 | struct program_space *pspace; |
6c95b8df PA |
2242 | struct cleanup *old_chain; |
2243 | ||
2244 | old_chain = save_current_program_space (); | |
0fd8e87f | 2245 | |
6c95b8df | 2246 | ALL_PSPACES (pspace) |
af02033e PP |
2247 | { |
2248 | struct objfile *objfile; | |
2249 | ||
2250 | set_current_program_space (pspace); | |
2251 | ||
2252 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2253 | { |
af02033e PP |
2254 | int i; |
2255 | struct gdbarch *gdbarch; | |
17450429 | 2256 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2257 | |
af02033e PP |
2258 | gdbarch = get_objfile_arch (objfile); |
2259 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2260 | continue; |
2261 | ||
17450429 PP |
2262 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2263 | ||
2264 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2265 | { |
2266 | struct breakpoint *b; | |
af02033e | 2267 | const char *func_name; |
17450429 | 2268 | CORE_ADDR addr; |
6c95b8df | 2269 | |
17450429 | 2270 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2271 | continue; |
0fd8e87f | 2272 | |
17450429 PP |
2273 | func_name = longjmp_names[i]; |
2274 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2275 | { | |
2276 | struct minimal_symbol *m; | |
2277 | ||
2278 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2279 | if (m == NULL) | |
2280 | { | |
2281 | /* Prevent future lookups in this objfile. */ | |
2282 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2283 | continue; | |
2284 | } | |
2285 | bp_objfile_data->longjmp_msym[i] = m; | |
2286 | } | |
2287 | ||
2288 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2289 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2290 | &internal_breakpoint_ops); | |
af02033e PP |
2291 | b->addr_string = xstrdup (func_name); |
2292 | b->enable_state = bp_disabled; | |
2293 | } | |
0fd8e87f | 2294 | } |
af02033e | 2295 | } |
0fd8e87f | 2296 | update_global_location_list (1); |
6c95b8df PA |
2297 | |
2298 | do_cleanups (old_chain); | |
0fd8e87f UW |
2299 | } |
2300 | ||
af02033e | 2301 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2302 | static void |
af02033e | 2303 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2304 | { |
2305 | struct program_space *pspace; | |
aa7d318d | 2306 | struct cleanup *old_chain; |
af02033e | 2307 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2308 | |
2309 | old_chain = save_current_program_space (); | |
2310 | ||
2311 | ALL_PSPACES (pspace) | |
17450429 PP |
2312 | { |
2313 | struct objfile *objfile; | |
2314 | CORE_ADDR addr; | |
2315 | ||
2316 | set_current_program_space (pspace); | |
2317 | ||
aa7d318d TT |
2318 | ALL_OBJFILES (objfile) |
2319 | { | |
2320 | struct breakpoint *b; | |
17450429 | 2321 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2322 | |
17450429 | 2323 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2324 | |
17450429 PP |
2325 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2326 | continue; | |
2327 | ||
2328 | if (bp_objfile_data->terminate_msym == NULL) | |
2329 | { | |
2330 | struct minimal_symbol *m; | |
2331 | ||
2332 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2333 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2334 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2335 | { | |
2336 | /* Prevent future lookups in this objfile. */ | |
2337 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2338 | continue; | |
2339 | } | |
2340 | bp_objfile_data->terminate_msym = m; | |
2341 | } | |
aa7d318d | 2342 | |
17450429 PP |
2343 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2344 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2345 | bp_std_terminate_master, |
2346 | &internal_breakpoint_ops); | |
aa7d318d TT |
2347 | b->addr_string = xstrdup (func_name); |
2348 | b->enable_state = bp_disabled; | |
2349 | } | |
17450429 PP |
2350 | } |
2351 | ||
aa7d318d TT |
2352 | update_global_location_list (1); |
2353 | ||
2354 | do_cleanups (old_chain); | |
2355 | } | |
2356 | ||
186c406b TT |
2357 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2358 | ||
2359 | void | |
2360 | create_exception_master_breakpoint (void) | |
2361 | { | |
2362 | struct objfile *objfile; | |
17450429 | 2363 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2364 | |
2365 | ALL_OBJFILES (objfile) | |
2366 | { | |
17450429 PP |
2367 | struct breakpoint *b; |
2368 | struct gdbarch *gdbarch; | |
2369 | struct breakpoint_objfile_data *bp_objfile_data; | |
2370 | CORE_ADDR addr; | |
2371 | ||
2372 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2373 | ||
2374 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2375 | continue; | |
2376 | ||
2377 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2378 | |
17450429 | 2379 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2380 | { |
17450429 | 2381 | struct minimal_symbol *debug_hook; |
186c406b | 2382 | |
17450429 PP |
2383 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2384 | if (debug_hook == NULL) | |
2385 | { | |
2386 | bp_objfile_data->exception_msym = &msym_not_found; | |
2387 | continue; | |
2388 | } | |
2389 | ||
2390 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2391 | } |
17450429 PP |
2392 | |
2393 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2394 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2395 | ¤t_target); | |
06edf0c0 PA |
2396 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
2397 | &internal_breakpoint_ops); | |
17450429 PP |
2398 | b->addr_string = xstrdup (func_name); |
2399 | b->enable_state = bp_disabled; | |
186c406b TT |
2400 | } |
2401 | ||
2402 | update_global_location_list (1); | |
2403 | } | |
2404 | ||
c906108c | 2405 | void |
fba45db2 | 2406 | update_breakpoints_after_exec (void) |
c906108c | 2407 | { |
35df4500 | 2408 | struct breakpoint *b, *b_tmp; |
876fa593 | 2409 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2410 | |
25b22b0a PA |
2411 | /* We're about to delete breakpoints from GDB's lists. If the |
2412 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2413 | writing the breakpoints' "shadow contents" back into memory. The | |
2414 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2415 | do that. Instead, the target is responsible from marking | |
2416 | breakpoints out as soon as it detects an exec. We don't do that | |
2417 | here instead, because there may be other attempts to delete | |
2418 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2419 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2420 | if (bploc->pspace == current_program_space) |
2421 | gdb_assert (!bploc->inserted); | |
c906108c | 2422 | |
35df4500 | 2423 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2424 | { |
6c95b8df PA |
2425 | if (b->pspace != current_program_space) |
2426 | continue; | |
2427 | ||
4a64f543 | 2428 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2429 | if (b->type == bp_shlib_event) |
2430 | { | |
2431 | delete_breakpoint (b); | |
2432 | continue; | |
2433 | } | |
c906108c | 2434 | |
4a64f543 | 2435 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2436 | if (b->type == bp_jit_event) |
2437 | { | |
2438 | delete_breakpoint (b); | |
2439 | continue; | |
2440 | } | |
2441 | ||
1900040c | 2442 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2443 | as must overlay event and longjmp master breakpoints. */ |
2444 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2445 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2446 | || b->type == bp_exception_master) | |
c4093a6a JM |
2447 | { |
2448 | delete_breakpoint (b); | |
2449 | continue; | |
2450 | } | |
2451 | ||
4a64f543 | 2452 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 2453 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
2454 | { |
2455 | delete_breakpoint (b); | |
2456 | continue; | |
2457 | } | |
2458 | ||
611c83ae PA |
2459 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2460 | after an exec. */ | |
186c406b TT |
2461 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2462 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2463 | { |
2464 | delete_breakpoint (b); | |
2465 | continue; | |
2466 | } | |
2467 | ||
ce78b96d JB |
2468 | if (b->type == bp_catchpoint) |
2469 | { | |
2470 | /* For now, none of the bp_catchpoint breakpoints need to | |
2471 | do anything at this point. In the future, if some of | |
2472 | the catchpoints need to something, we will need to add | |
2473 | a new method, and call this method from here. */ | |
2474 | continue; | |
2475 | } | |
2476 | ||
c5aa993b JM |
2477 | /* bp_finish is a special case. The only way we ought to be able |
2478 | to see one of these when an exec() has happened, is if the user | |
2479 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2480 | carries them to the call-site of the current callee, by setting | |
2481 | a temporary bp there and resuming. But in this case, the finish | |
2482 | will carry them entirely through the vfork & exec. | |
2483 | ||
2484 | We don't want to allow a bp_finish to remain inserted now. But | |
2485 | we can't safely delete it, 'cause finish_command has a handle to | |
2486 | the bp on a bpstat, and will later want to delete it. There's a | |
2487 | chance (and I've seen it happen) that if we delete the bp_finish | |
2488 | here, that its storage will get reused by the time finish_command | |
2489 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2490 | We really must allow finish_command to delete a bp_finish. | |
2491 | ||
e5dd4106 | 2492 | In the absence of a general solution for the "how do we know |
53a5351d JM |
2493 | it's safe to delete something others may have handles to?" |
2494 | problem, what we'll do here is just uninsert the bp_finish, and | |
2495 | let finish_command delete it. | |
2496 | ||
2497 | (We know the bp_finish is "doomed" in the sense that it's | |
2498 | momentary, and will be deleted as soon as finish_command sees | |
2499 | the inferior stopped. So it doesn't matter that the bp's | |
2500 | address is probably bogus in the new a.out, unlike e.g., the | |
2501 | solib breakpoints.) */ | |
c5aa993b | 2502 | |
c5aa993b JM |
2503 | if (b->type == bp_finish) |
2504 | { | |
2505 | continue; | |
2506 | } | |
2507 | ||
2508 | /* Without a symbolic address, we have little hope of the | |
2509 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2510 | a.out. */ |
c5aa993b JM |
2511 | if (b->addr_string == NULL) |
2512 | { | |
2513 | delete_breakpoint (b); | |
2514 | continue; | |
2515 | } | |
c5aa993b | 2516 | } |
1900040c | 2517 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2518 | create_overlay_event_breakpoint (); |
2519 | create_longjmp_master_breakpoint (); | |
2520 | create_std_terminate_master_breakpoint (); | |
186c406b | 2521 | create_exception_master_breakpoint (); |
c906108c SS |
2522 | } |
2523 | ||
2524 | int | |
fba45db2 | 2525 | detach_breakpoints (int pid) |
c906108c | 2526 | { |
35df4500 | 2527 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2528 | int val = 0; |
ce696e05 | 2529 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2530 | struct inferior *inf = current_inferior (); |
c5aa993b | 2531 | |
39f77062 | 2532 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2533 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2534 | |
6c95b8df | 2535 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2536 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2537 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2538 | { |
35df4500 | 2539 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2540 | continue; |
2541 | ||
35df4500 TJB |
2542 | if (bl->inserted) |
2543 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2544 | } |
d03285ec UW |
2545 | |
2546 | /* Detach single-step breakpoints as well. */ | |
2547 | detach_single_step_breakpoints (); | |
2548 | ||
ce696e05 | 2549 | do_cleanups (old_chain); |
3a1bae8e | 2550 | return val; |
c906108c SS |
2551 | } |
2552 | ||
35df4500 | 2553 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2554 | Note that this is used to detach breakpoints from a child fork. |
2555 | When we get here, the child isn't in the inferior list, and neither | |
2556 | do we have objects to represent its address space --- we should | |
35df4500 | 2557 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2558 | |
c906108c | 2559 | static int |
35df4500 | 2560 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2561 | { |
2562 | int val; | |
c5aa993b | 2563 | |
35df4500 TJB |
2564 | /* BL is never in moribund_locations by our callers. */ |
2565 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2566 | |
35df4500 | 2567 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2568 | /* Permanent breakpoints cannot be inserted or removed. */ |
2569 | return 0; | |
2570 | ||
74960c60 VP |
2571 | /* The type of none suggests that owner is actually deleted. |
2572 | This should not ever happen. */ | |
35df4500 | 2573 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2574 | |
35df4500 TJB |
2575 | if (bl->loc_type == bp_loc_software_breakpoint |
2576 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2577 | { |
c02f5703 MS |
2578 | /* "Normal" instruction breakpoint: either the standard |
2579 | trap-instruction bp (bp_breakpoint), or a | |
2580 | bp_hardware_breakpoint. */ | |
2581 | ||
2582 | /* First check to see if we have to handle an overlay. */ | |
2583 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2584 | || bl->section == NULL |
2585 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2586 | { |
2587 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 2588 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 2589 | } |
c906108c SS |
2590 | else |
2591 | { | |
4a64f543 | 2592 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2593 | Did we set a breakpoint at the LMA? */ |
2594 | if (!overlay_events_enabled) | |
2595 | { | |
2596 | /* Yes -- overlay event support is not active, so we | |
2597 | should have set a breakpoint at the LMA. Remove it. | |
2598 | */ | |
c02f5703 MS |
2599 | /* Ignore any failures: if the LMA is in ROM, we will |
2600 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2601 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2602 | target_remove_hw_breakpoint (bl->gdbarch, | |
2603 | &bl->overlay_target_info); | |
c02f5703 | 2604 | else |
35df4500 TJB |
2605 | target_remove_breakpoint (bl->gdbarch, |
2606 | &bl->overlay_target_info); | |
c02f5703 MS |
2607 | } |
2608 | /* Did we set a breakpoint at the VMA? | |
2609 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2610 | if (bl->inserted) |
c906108c | 2611 | { |
c02f5703 MS |
2612 | /* Yes -- remove it. Previously we did not bother to |
2613 | remove the breakpoint if the section had been | |
2614 | unmapped, but let's not rely on that being safe. We | |
2615 | don't know what the overlay manager might do. */ | |
aa67235e UW |
2616 | |
2617 | /* However, we should remove *software* breakpoints only | |
2618 | if the section is still mapped, or else we overwrite | |
2619 | wrong code with the saved shadow contents. */ | |
348d480f PA |
2620 | if (bl->loc_type == bp_loc_hardware_breakpoint |
2621 | || section_is_mapped (bl->section)) | |
2622 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
2623 | else |
2624 | val = 0; | |
c906108c | 2625 | } |
c02f5703 MS |
2626 | else |
2627 | { | |
2628 | /* No -- not inserted, so no need to remove. No error. */ | |
2629 | val = 0; | |
2630 | } | |
c906108c | 2631 | } |
879d1e6b UW |
2632 | |
2633 | /* In some cases, we might not be able to remove a breakpoint | |
2634 | in a shared library that has already been removed, but we | |
2635 | have not yet processed the shlib unload event. */ | |
35df4500 | 2636 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2637 | val = 0; |
2638 | ||
c906108c SS |
2639 | if (val) |
2640 | return val; | |
35df4500 | 2641 | bl->inserted = (is == mark_inserted); |
c906108c | 2642 | } |
35df4500 | 2643 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2644 | { |
77b06cd7 TJB |
2645 | gdb_assert (bl->owner->ops != NULL |
2646 | && bl->owner->ops->remove_location != NULL); | |
2647 | ||
35df4500 | 2648 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2649 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2650 | |
c906108c | 2651 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2652 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2653 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2654 | bl->owner->number); |
c906108c | 2655 | } |
35df4500 TJB |
2656 | else if (bl->owner->type == bp_catchpoint |
2657 | && breakpoint_enabled (bl->owner) | |
2658 | && !bl->duplicate) | |
ce78b96d | 2659 | { |
77b06cd7 TJB |
2660 | gdb_assert (bl->owner->ops != NULL |
2661 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2662 | |
77b06cd7 | 2663 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2664 | if (val) |
2665 | return val; | |
77b06cd7 | 2666 | |
35df4500 | 2667 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2668 | } |
c906108c SS |
2669 | |
2670 | return 0; | |
2671 | } | |
2672 | ||
6c95b8df | 2673 | static int |
35df4500 | 2674 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2675 | { |
2676 | int ret; | |
2677 | struct cleanup *old_chain; | |
2678 | ||
35df4500 TJB |
2679 | /* BL is never in moribund_locations by our callers. */ |
2680 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2681 | |
35df4500 | 2682 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2683 | /* Permanent breakpoints cannot be inserted or removed. */ |
2684 | return 0; | |
2685 | ||
2686 | /* The type of none suggests that owner is actually deleted. | |
2687 | This should not ever happen. */ | |
35df4500 | 2688 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2689 | |
2690 | old_chain = save_current_space_and_thread (); | |
2691 | ||
35df4500 | 2692 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2693 | |
35df4500 | 2694 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2695 | |
2696 | do_cleanups (old_chain); | |
2697 | return ret; | |
2698 | } | |
2699 | ||
c906108c SS |
2700 | /* Clear the "inserted" flag in all breakpoints. */ |
2701 | ||
25b22b0a | 2702 | void |
fba45db2 | 2703 | mark_breakpoints_out (void) |
c906108c | 2704 | { |
35df4500 | 2705 | struct bp_location *bl, **blp_tmp; |
c906108c | 2706 | |
35df4500 TJB |
2707 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2708 | if (bl->pspace == current_program_space) | |
2709 | bl->inserted = 0; | |
c906108c SS |
2710 | } |
2711 | ||
53a5351d JM |
2712 | /* Clear the "inserted" flag in all breakpoints and delete any |
2713 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2714 | |
2715 | Plus other such housekeeping that has to be done for breakpoints | |
2716 | between runs. | |
2717 | ||
53a5351d JM |
2718 | Note: this function gets called at the end of a run (by |
2719 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2720 | init_wait_for_inferior). */ |
c906108c SS |
2721 | |
2722 | ||
2723 | ||
2724 | void | |
fba45db2 | 2725 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2726 | { |
35df4500 TJB |
2727 | struct breakpoint *b, *b_tmp; |
2728 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2729 | int ix; |
6c95b8df | 2730 | struct program_space *pspace = current_program_space; |
c906108c | 2731 | |
50c71eaf PA |
2732 | /* If breakpoint locations are shared across processes, then there's |
2733 | nothing to do. */ | |
2567c7d9 | 2734 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2735 | return; |
2736 | ||
35df4500 | 2737 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2738 | { |
35df4500 TJB |
2739 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2740 | if (bl->pspace == pspace | |
2741 | && bl->owner->enable_state != bp_permanent) | |
2742 | bl->inserted = 0; | |
6c95b8df | 2743 | } |
075f6582 | 2744 | |
35df4500 | 2745 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2746 | { |
6c95b8df PA |
2747 | if (b->loc && b->loc->pspace != pspace) |
2748 | continue; | |
2749 | ||
c5aa993b JM |
2750 | switch (b->type) |
2751 | { | |
2752 | case bp_call_dummy: | |
c906108c | 2753 | |
c5aa993b | 2754 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2755 | cause problems when the inferior is rerun, so we better get |
2756 | rid of it. */ | |
2757 | ||
2758 | case bp_watchpoint_scope: | |
2759 | ||
2760 | /* Also get rid of scope breakpoints. */ | |
2761 | ||
2762 | case bp_shlib_event: | |
2763 | ||
2764 | /* Also remove solib event breakpoints. Their addresses may | |
2765 | have changed since the last time we ran the program. | |
2766 | Actually we may now be debugging against different target; | |
2767 | and so the solib backend that installed this breakpoint may | |
2768 | not be used in by the target. E.g., | |
2769 | ||
2770 | (gdb) file prog-linux | |
2771 | (gdb) run # native linux target | |
2772 | ... | |
2773 | (gdb) kill | |
2774 | (gdb) file prog-win.exe | |
2775 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2776 | */ | |
c906108c | 2777 | |
c5aa993b JM |
2778 | delete_breakpoint (b); |
2779 | break; | |
c906108c | 2780 | |
c5aa993b JM |
2781 | case bp_watchpoint: |
2782 | case bp_hardware_watchpoint: | |
2783 | case bp_read_watchpoint: | |
2784 | case bp_access_watchpoint: | |
3a5c3e22 PA |
2785 | { |
2786 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 2787 | |
3a5c3e22 PA |
2788 | /* Likewise for watchpoints on local expressions. */ |
2789 | if (w->exp_valid_block != NULL) | |
2790 | delete_breakpoint (b); | |
2791 | else if (context == inf_starting) | |
2792 | { | |
2793 | /* Reset val field to force reread of starting value in | |
2794 | insert_breakpoints. */ | |
2795 | if (w->val) | |
2796 | value_free (w->val); | |
2797 | w->val = NULL; | |
2798 | w->val_valid = 0; | |
c860120c | 2799 | } |
3a5c3e22 | 2800 | } |
c5aa993b JM |
2801 | break; |
2802 | default: | |
c5aa993b JM |
2803 | break; |
2804 | } | |
2805 | } | |
1c5cfe86 PA |
2806 | |
2807 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2808 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2809 | decref_bp_location (&bl); | |
1c5cfe86 | 2810 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2811 | } |
2812 | ||
6c95b8df PA |
2813 | /* These functions concern about actual breakpoints inserted in the |
2814 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2815 | we need to hop over the bkpt --- so we check for address space | |
2816 | match, not program space. */ | |
2817 | ||
c2c6d25f JM |
2818 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2819 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2820 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2821 | permanent breakpoint. | |
2822 | - When continuing from a location with an ordinary breakpoint, we | |
2823 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 2824 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
2825 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
2826 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2827 | |
c2c6d25f | 2828 | enum breakpoint_here |
6c95b8df | 2829 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2830 | { |
35df4500 | 2831 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2832 | int any_breakpoint_here = 0; |
c906108c | 2833 | |
35df4500 | 2834 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2835 | { |
35df4500 TJB |
2836 | if (bl->loc_type != bp_loc_software_breakpoint |
2837 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2838 | continue; |
2839 | ||
f1310107 | 2840 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2841 | if ((breakpoint_enabled (bl->owner) |
2842 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2843 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2844 | { |
2845 | if (overlay_debugging | |
35df4500 TJB |
2846 | && section_is_overlay (bl->section) |
2847 | && !section_is_mapped (bl->section)) | |
075f6582 | 2848 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2849 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2850 | return permanent_breakpoint_here; |
2851 | else | |
2852 | any_breakpoint_here = 1; | |
2853 | } | |
2854 | } | |
c906108c | 2855 | |
c2c6d25f | 2856 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2857 | } |
2858 | ||
1c5cfe86 PA |
2859 | /* Return true if there's a moribund breakpoint at PC. */ |
2860 | ||
2861 | int | |
6c95b8df | 2862 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2863 | { |
2864 | struct bp_location *loc; | |
2865 | int ix; | |
2866 | ||
2867 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2868 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2869 | return 1; |
2870 | ||
2871 | return 0; | |
2872 | } | |
c2c6d25f | 2873 | |
c36b740a | 2874 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2875 | inserted using regular breakpoint_chain / bp_location array |
2876 | mechanism. This does not check for single-step breakpoints, which | |
2877 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2878 | |
2879 | int | |
4a64f543 MS |
2880 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2881 | CORE_ADDR pc) | |
c906108c | 2882 | { |
35df4500 | 2883 | struct bp_location *bl, **blp_tmp; |
c906108c | 2884 | |
35df4500 | 2885 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2886 | { |
35df4500 TJB |
2887 | if (bl->loc_type != bp_loc_software_breakpoint |
2888 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2889 | continue; |
2890 | ||
35df4500 | 2891 | if (bl->inserted |
f1310107 | 2892 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2893 | { |
2894 | if (overlay_debugging | |
35df4500 TJB |
2895 | && section_is_overlay (bl->section) |
2896 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2897 | continue; /* unmapped overlay -- can't be a match */ |
2898 | else | |
2899 | return 1; | |
2900 | } | |
c5aa993b | 2901 | } |
c36b740a VP |
2902 | return 0; |
2903 | } | |
2904 | ||
2905 | /* Returns non-zero iff there's either regular breakpoint | |
2906 | or a single step breakpoint inserted at PC. */ | |
2907 | ||
2908 | int | |
6c95b8df | 2909 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2910 | { |
6c95b8df | 2911 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2912 | return 1; |
c906108c | 2913 | |
6c95b8df | 2914 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2915 | return 1; |
2916 | ||
c906108c SS |
2917 | return 0; |
2918 | } | |
2919 | ||
4fa8626c DJ |
2920 | /* This function returns non-zero iff there is a software breakpoint |
2921 | inserted at PC. */ | |
2922 | ||
2923 | int | |
3e43a32a MS |
2924 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2925 | CORE_ADDR pc) | |
4fa8626c | 2926 | { |
35df4500 | 2927 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2928 | |
35df4500 | 2929 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2930 | { |
35df4500 | 2931 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2932 | continue; |
2933 | ||
35df4500 TJB |
2934 | if (bl->inserted |
2935 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2936 | aspace, pc)) |
4fa8626c DJ |
2937 | { |
2938 | if (overlay_debugging | |
35df4500 TJB |
2939 | && section_is_overlay (bl->section) |
2940 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2941 | continue; /* unmapped overlay -- can't be a match */ |
2942 | else | |
2943 | return 1; | |
2944 | } | |
2945 | } | |
2946 | ||
1aafd4da | 2947 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2948 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2949 | return 1; |
2950 | ||
4fa8626c DJ |
2951 | return 0; |
2952 | } | |
2953 | ||
9093389c PA |
2954 | int |
2955 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2956 | CORE_ADDR addr, ULONGEST len) | |
2957 | { | |
2958 | struct breakpoint *bpt; | |
2959 | ||
2960 | ALL_BREAKPOINTS (bpt) | |
2961 | { | |
2962 | struct bp_location *loc; | |
2963 | ||
2964 | if (bpt->type != bp_hardware_watchpoint | |
2965 | && bpt->type != bp_access_watchpoint) | |
2966 | continue; | |
2967 | ||
2968 | if (!breakpoint_enabled (bpt)) | |
2969 | continue; | |
2970 | ||
2971 | for (loc = bpt->loc; loc; loc = loc->next) | |
2972 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2973 | { | |
2974 | CORE_ADDR l, h; | |
2975 | ||
2976 | /* Check for intersection. */ | |
2977 | l = max (loc->address, addr); | |
2978 | h = min (loc->address + loc->length, addr + len); | |
2979 | if (l < h) | |
2980 | return 1; | |
2981 | } | |
2982 | } | |
2983 | return 0; | |
2984 | } | |
2985 | ||
075f6582 DJ |
2986 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2987 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2988 | |
2989 | int | |
6c95b8df PA |
2990 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2991 | ptid_t ptid) | |
c906108c | 2992 | { |
35df4500 | 2993 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2994 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2995 | int thread = -1; |
4a306c9a | 2996 | int task = 0; |
a6f1cd96 | 2997 | |
35df4500 | 2998 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2999 | { |
35df4500 TJB |
3000 | if (bl->loc_type != bp_loc_software_breakpoint |
3001 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3002 | continue; |
3003 | ||
35df4500 TJB |
3004 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3005 | if (!breakpoint_enabled (bl->owner) | |
3006 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3007 | continue; |
3008 | ||
f1310107 | 3009 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3010 | continue; |
3011 | ||
35df4500 | 3012 | if (bl->owner->thread != -1) |
075f6582 | 3013 | { |
a6f1cd96 JB |
3014 | /* This is a thread-specific breakpoint. Check that ptid |
3015 | matches that thread. If thread hasn't been computed yet, | |
3016 | it is now time to do so. */ | |
3017 | if (thread == -1) | |
3018 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3019 | if (bl->owner->thread != thread) |
a6f1cd96 | 3020 | continue; |
075f6582 | 3021 | } |
a6f1cd96 | 3022 | |
35df4500 | 3023 | if (bl->owner->task != 0) |
4a306c9a JB |
3024 | { |
3025 | /* This is a task-specific breakpoint. Check that ptid | |
3026 | matches that task. If task hasn't been computed yet, | |
3027 | it is now time to do so. */ | |
3028 | if (task == 0) | |
3029 | task = ada_get_task_number (ptid); | |
35df4500 | 3030 | if (bl->owner->task != task) |
4a306c9a JB |
3031 | continue; |
3032 | } | |
3033 | ||
a6f1cd96 | 3034 | if (overlay_debugging |
35df4500 TJB |
3035 | && section_is_overlay (bl->section) |
3036 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3037 | continue; /* unmapped overlay -- can't be a match */ |
3038 | ||
3039 | return 1; | |
c5aa993b | 3040 | } |
c906108c SS |
3041 | |
3042 | return 0; | |
3043 | } | |
c906108c | 3044 | \f |
c5aa993b | 3045 | |
c906108c SS |
3046 | /* bpstat stuff. External routines' interfaces are documented |
3047 | in breakpoint.h. */ | |
3048 | ||
3049 | int | |
fba45db2 | 3050 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3051 | { |
533be4dd | 3052 | return (ep->type == bp_catchpoint); |
c906108c SS |
3053 | } |
3054 | ||
f431efe5 PA |
3055 | /* Frees any storage that is part of a bpstat. Does not walk the |
3056 | 'next' chain. */ | |
3057 | ||
3058 | static void | |
198757a8 VP |
3059 | bpstat_free (bpstat bs) |
3060 | { | |
3061 | if (bs->old_val != NULL) | |
3062 | value_free (bs->old_val); | |
9add0f1b | 3063 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3064 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3065 | xfree (bs); |
3066 | } | |
3067 | ||
c906108c SS |
3068 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3069 | Also free any storage that is part of a bpstat. */ | |
3070 | ||
3071 | void | |
fba45db2 | 3072 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3073 | { |
3074 | bpstat p; | |
3075 | bpstat q; | |
3076 | ||
3077 | if (bsp == 0) | |
3078 | return; | |
3079 | p = *bsp; | |
3080 | while (p != NULL) | |
3081 | { | |
3082 | q = p->next; | |
198757a8 | 3083 | bpstat_free (p); |
c906108c SS |
3084 | p = q; |
3085 | } | |
3086 | *bsp = NULL; | |
3087 | } | |
3088 | ||
3089 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3090 | is part of the bpstat is copied as well. */ | |
3091 | ||
3092 | bpstat | |
fba45db2 | 3093 | bpstat_copy (bpstat bs) |
c906108c SS |
3094 | { |
3095 | bpstat p = NULL; | |
3096 | bpstat tmp; | |
3097 | bpstat retval = NULL; | |
3098 | ||
3099 | if (bs == NULL) | |
3100 | return bs; | |
3101 | ||
3102 | for (; bs != NULL; bs = bs->next) | |
3103 | { | |
3104 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3105 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3106 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3107 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3108 | if (bs->old_val != NULL) |
3c3185ac JK |
3109 | { |
3110 | tmp->old_val = value_copy (bs->old_val); | |
3111 | release_value (tmp->old_val); | |
3112 | } | |
31cc81e9 | 3113 | |
c906108c SS |
3114 | if (p == NULL) |
3115 | /* This is the first thing in the chain. */ | |
3116 | retval = tmp; | |
3117 | else | |
3118 | p->next = tmp; | |
3119 | p = tmp; | |
3120 | } | |
3121 | p->next = NULL; | |
3122 | return retval; | |
3123 | } | |
3124 | ||
4a64f543 | 3125 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3126 | |
3127 | bpstat | |
fba45db2 | 3128 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3129 | { |
c5aa993b JM |
3130 | if (bsp == NULL) |
3131 | return NULL; | |
c906108c | 3132 | |
c5aa993b JM |
3133 | for (; bsp != NULL; bsp = bsp->next) |
3134 | { | |
f431efe5 | 3135 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3136 | return bsp; |
3137 | } | |
c906108c SS |
3138 | return NULL; |
3139 | } | |
3140 | ||
4a64f543 MS |
3141 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3142 | stopped at. *BSP upon return is a bpstat which points to the | |
3143 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3144 | good for anything but further calls to bpstat_num). | |
3145 | ||
8671a17b PA |
3146 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3147 | Return -1 if stopped at a breakpoint that has been deleted since | |
3148 | we set it. | |
3149 | Return 1 otherwise. */ | |
c906108c SS |
3150 | |
3151 | int | |
8671a17b | 3152 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3153 | { |
3154 | struct breakpoint *b; | |
3155 | ||
3156 | if ((*bsp) == NULL) | |
3157 | return 0; /* No more breakpoint values */ | |
8671a17b | 3158 | |
4a64f543 MS |
3159 | /* We assume we'll never have several bpstats that correspond to a |
3160 | single breakpoint -- otherwise, this function might return the | |
3161 | same number more than once and this will look ugly. */ | |
f431efe5 | 3162 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3163 | *bsp = (*bsp)->next; |
3164 | if (b == NULL) | |
3165 | return -1; /* breakpoint that's been deleted since */ | |
3166 | ||
3167 | *num = b->number; /* We have its number */ | |
3168 | return 1; | |
c906108c SS |
3169 | } |
3170 | ||
3171 | /* Modify BS so that the actions will not be performed. */ | |
3172 | ||
3173 | void | |
fba45db2 | 3174 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3175 | { |
3176 | for (; bs != NULL; bs = bs->next) | |
3177 | { | |
9add0f1b | 3178 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3179 | bs->commands_left = NULL; |
c906108c SS |
3180 | if (bs->old_val != NULL) |
3181 | { | |
3182 | value_free (bs->old_val); | |
3183 | bs->old_val = NULL; | |
3184 | } | |
3185 | } | |
3186 | } | |
3187 | ||
f3b1572e PA |
3188 | /* Called when a command is about to proceed the inferior. */ |
3189 | ||
3190 | static void | |
3191 | breakpoint_about_to_proceed (void) | |
3192 | { | |
3193 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3194 | { | |
3195 | struct thread_info *tp = inferior_thread (); | |
3196 | ||
3197 | /* Allow inferior function calls in breakpoint commands to not | |
3198 | interrupt the command list. When the call finishes | |
3199 | successfully, the inferior will be standing at the same | |
3200 | breakpoint as if nothing happened. */ | |
16c381f0 | 3201 | if (tp->control.in_infcall) |
f3b1572e PA |
3202 | return; |
3203 | } | |
3204 | ||
3205 | breakpoint_proceeded = 1; | |
3206 | } | |
3207 | ||
4a64f543 MS |
3208 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3209 | command. */ | |
c906108c | 3210 | static void |
4efb68b1 | 3211 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3212 | { |
3213 | executing_breakpoint_commands = 0; | |
3214 | } | |
3215 | ||
4a64f543 MS |
3216 | /* Execute all the commands associated with all the breakpoints at |
3217 | this location. Any of these commands could cause the process to | |
3218 | proceed beyond this point, etc. We look out for such changes by | |
3219 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3220 | |
347bddb7 PA |
3221 | Returns true if a breakpoint command resumed the inferior. In that |
3222 | case, it is the caller's responsibility to recall it again with the | |
3223 | bpstat of the current thread. */ | |
3224 | ||
3225 | static int | |
3226 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3227 | { |
3228 | bpstat bs; | |
3229 | struct cleanup *old_chain; | |
347bddb7 | 3230 | int again = 0; |
c906108c SS |
3231 | |
3232 | /* Avoid endless recursion if a `source' command is contained | |
3233 | in bs->commands. */ | |
3234 | if (executing_breakpoint_commands) | |
347bddb7 | 3235 | return 0; |
c906108c SS |
3236 | |
3237 | executing_breakpoint_commands = 1; | |
3238 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3239 | ||
cf6c5ffb TT |
3240 | prevent_dont_repeat (); |
3241 | ||
4a64f543 | 3242 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3243 | bs = *bsp; |
3244 | ||
3245 | breakpoint_proceeded = 0; | |
3246 | for (; bs != NULL; bs = bs->next) | |
3247 | { | |
9add0f1b | 3248 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3249 | struct command_line *cmd; |
3250 | struct cleanup *this_cmd_tree_chain; | |
3251 | ||
3252 | /* Take ownership of the BSP's command tree, if it has one. | |
3253 | ||
3254 | The command tree could legitimately contain commands like | |
3255 | 'step' and 'next', which call clear_proceed_status, which | |
3256 | frees stop_bpstat's command tree. To make sure this doesn't | |
3257 | free the tree we're executing out from under us, we need to | |
3258 | take ownership of the tree ourselves. Since a given bpstat's | |
3259 | commands are only executed once, we don't need to copy it; we | |
3260 | can clear the pointer in the bpstat, and make sure we free | |
3261 | the tree when we're done. */ | |
9add0f1b TT |
3262 | ccmd = bs->commands; |
3263 | bs->commands = NULL; | |
3264 | this_cmd_tree_chain | |
3265 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3266 | cmd = bs->commands_left; | |
3267 | bs->commands_left = NULL; | |
6c50ab1c | 3268 | |
c906108c SS |
3269 | while (cmd != NULL) |
3270 | { | |
3271 | execute_control_command (cmd); | |
3272 | ||
3273 | if (breakpoint_proceeded) | |
3274 | break; | |
3275 | else | |
3276 | cmd = cmd->next; | |
3277 | } | |
6c50ab1c JB |
3278 | |
3279 | /* We can free this command tree now. */ | |
3280 | do_cleanups (this_cmd_tree_chain); | |
3281 | ||
c906108c | 3282 | if (breakpoint_proceeded) |
32c1e744 VP |
3283 | { |
3284 | if (target_can_async_p ()) | |
347bddb7 PA |
3285 | /* If we are in async mode, then the target might be still |
3286 | running, not stopped at any breakpoint, so nothing for | |
3287 | us to do here -- just return to the event loop. */ | |
3288 | ; | |
32c1e744 VP |
3289 | else |
3290 | /* In sync mode, when execute_control_command returns | |
3291 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3292 | Breakpoint commands for that stop were not run, since |
3293 | execute_command does not run breakpoint commands -- | |
3294 | only command_line_handler does, but that one is not | |
3295 | involved in execution of breakpoint commands. So, we | |
3296 | can now execute breakpoint commands. It should be | |
3297 | noted that making execute_command do bpstat actions is | |
3298 | not an option -- in this case we'll have recursive | |
3299 | invocation of bpstat for each breakpoint with a | |
3300 | command, and can easily blow up GDB stack. Instead, we | |
3301 | return true, which will trigger the caller to recall us | |
3302 | with the new stop_bpstat. */ | |
3303 | again = 1; | |
3304 | break; | |
32c1e744 | 3305 | } |
c906108c | 3306 | } |
c2b8ed2c | 3307 | do_cleanups (old_chain); |
347bddb7 PA |
3308 | return again; |
3309 | } | |
3310 | ||
3311 | void | |
3312 | bpstat_do_actions (void) | |
3313 | { | |
3314 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3315 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3316 | && target_has_execution | |
3317 | && !is_exited (inferior_ptid) | |
3318 | && !is_executing (inferior_ptid)) | |
3319 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3320 | and only return when it is stopped at the next breakpoint, we | |
3321 | keep doing breakpoint actions until it returns false to | |
3322 | indicate the inferior was not resumed. */ | |
16c381f0 | 3323 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3324 | break; |
c906108c SS |
3325 | } |
3326 | ||
fa4727a6 DJ |
3327 | /* Print out the (old or new) value associated with a watchpoint. */ |
3328 | ||
3329 | static void | |
3330 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3331 | { | |
3332 | if (val == NULL) | |
3333 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3334 | else | |
79a45b7d TT |
3335 | { |
3336 | struct value_print_options opts; | |
3337 | get_user_print_options (&opts); | |
3338 | value_print (val, stream, &opts); | |
3339 | } | |
fa4727a6 DJ |
3340 | } |
3341 | ||
e514a9d6 | 3342 | /* Generic routine for printing messages indicating why we |
4a64f543 | 3343 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3344 | 'print_it' in the bpstat structure. Under some circumstances we |
3345 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3346 | normal_stop(). */ |
e514a9d6 JM |
3347 | |
3348 | static enum print_stop_action | |
3349 | print_bp_stop_message (bpstat bs) | |
3350 | { | |
3351 | switch (bs->print_it) | |
3352 | { | |
3353 | case print_it_noop: | |
4a64f543 | 3354 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3355 | return PRINT_UNKNOWN; |
3356 | break; | |
3357 | ||
3358 | case print_it_done: | |
3359 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3360 | relevant messages. */ |
e514a9d6 JM |
3361 | return PRINT_SRC_AND_LOC; |
3362 | break; | |
3363 | ||
3364 | case print_it_normal: | |
4f8d1dc6 | 3365 | { |
f431efe5 PA |
3366 | struct breakpoint *b = bs->breakpoint_at; |
3367 | ||
1a6a67de TJB |
3368 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3369 | which has since been deleted. */ | |
3370 | if (b == NULL) | |
3371 | return PRINT_UNKNOWN; | |
3372 | ||
348d480f PA |
3373 | /* Normal case. Call the breakpoint's print_it method. */ |
3374 | return b->ops->print_it (bs); | |
4f8d1dc6 | 3375 | } |
348d480f | 3376 | break; |
3086aeae | 3377 | |
e514a9d6 | 3378 | default: |
8e65ff28 | 3379 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3380 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3381 | break; |
c906108c | 3382 | } |
c906108c SS |
3383 | } |
3384 | ||
e514a9d6 JM |
3385 | /* Print a message indicating what happened. This is called from |
3386 | normal_stop(). The input to this routine is the head of the bpstat | |
3387 | list - a list of the eventpoints that caused this stop. This | |
3388 | routine calls the generic print routine for printing a message | |
3389 | about reasons for stopping. This will print (for example) the | |
3390 | "Breakpoint n," part of the output. The return value of this | |
3391 | routine is one of: | |
c906108c | 3392 | |
4a64f543 | 3393 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3394 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3395 | code to print the location. An example is |
c5aa993b JM |
3396 | "Breakpoint 1, " which should be followed by |
3397 | the location. | |
917317f4 | 3398 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3399 | to also print the location part of the message. |
3400 | An example is the catch/throw messages, which | |
4a64f543 | 3401 | don't require a location appended to the end. |
917317f4 | 3402 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3403 | further info to be printed. */ |
c906108c | 3404 | |
917317f4 | 3405 | enum print_stop_action |
fba45db2 | 3406 | bpstat_print (bpstat bs) |
c906108c SS |
3407 | { |
3408 | int val; | |
c5aa993b | 3409 | |
c906108c | 3410 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3411 | (Currently all watchpoints go on the bpstat whether hit or not. |
3412 | That probably could (should) be changed, provided care is taken | |
c906108c | 3413 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3414 | for (; bs; bs = bs->next) |
3415 | { | |
3416 | val = print_bp_stop_message (bs); | |
3417 | if (val == PRINT_SRC_ONLY | |
3418 | || val == PRINT_SRC_AND_LOC | |
3419 | || val == PRINT_NOTHING) | |
3420 | return val; | |
3421 | } | |
c906108c | 3422 | |
e514a9d6 | 3423 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3424 | with and nothing was printed. */ |
917317f4 | 3425 | return PRINT_UNKNOWN; |
c906108c SS |
3426 | } |
3427 | ||
4a64f543 MS |
3428 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3429 | used inside a catch_errors to evaluate the breakpoint condition. | |
3430 | The argument is a "struct expression *" that has been cast to a | |
3431 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3432 | |
3433 | static int | |
4efb68b1 | 3434 | breakpoint_cond_eval (void *exp) |
c906108c | 3435 | { |
278cd55f | 3436 | struct value *mark = value_mark (); |
c5aa993b | 3437 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3438 | |
c906108c SS |
3439 | value_free_to_mark (mark); |
3440 | return i; | |
3441 | } | |
3442 | ||
5760d0ab | 3443 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3444 | |
3445 | static bpstat | |
5760d0ab | 3446 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3447 | { |
3448 | bpstat bs; | |
3449 | ||
3450 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3451 | bs->next = NULL; |
3452 | **bs_link_pointer = bs; | |
3453 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3454 | bs->breakpoint_at = bl->owner; |
3455 | bs->bp_location_at = bl; | |
3456 | incref_bp_location (bl); | |
c906108c SS |
3457 | /* If the condition is false, etc., don't do the commands. */ |
3458 | bs->commands = NULL; | |
9add0f1b | 3459 | bs->commands_left = NULL; |
c906108c SS |
3460 | bs->old_val = NULL; |
3461 | bs->print_it = print_it_normal; | |
3462 | return bs; | |
3463 | } | |
3464 | \f | |
d983da9c DJ |
3465 | /* The target has stopped with waitstatus WS. Check if any hardware |
3466 | watchpoints have triggered, according to the target. */ | |
3467 | ||
3468 | int | |
3469 | watchpoints_triggered (struct target_waitstatus *ws) | |
3470 | { | |
d92524f1 | 3471 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3472 | CORE_ADDR addr; |
3473 | struct breakpoint *b; | |
3474 | ||
3475 | if (!stopped_by_watchpoint) | |
3476 | { | |
3477 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3478 | as not triggered. */ | |
3479 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3480 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3481 | { |
3482 | struct watchpoint *w = (struct watchpoint *) b; | |
3483 | ||
3484 | w->watchpoint_triggered = watch_triggered_no; | |
3485 | } | |
d983da9c DJ |
3486 | |
3487 | return 0; | |
3488 | } | |
3489 | ||
3490 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3491 | { | |
3492 | /* We were stopped by a watchpoint, but we don't know where. | |
3493 | Mark all watchpoints as unknown. */ | |
3494 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3495 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3496 | { |
3497 | struct watchpoint *w = (struct watchpoint *) b; | |
3498 | ||
3499 | w->watchpoint_triggered = watch_triggered_unknown; | |
3500 | } | |
d983da9c DJ |
3501 | |
3502 | return stopped_by_watchpoint; | |
3503 | } | |
3504 | ||
3505 | /* The target could report the data address. Mark watchpoints | |
3506 | affected by this data address as triggered, and all others as not | |
3507 | triggered. */ | |
3508 | ||
3509 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3510 | if (is_hardware_watchpoint (b)) |
d983da9c | 3511 | { |
3a5c3e22 | 3512 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 3513 | struct bp_location *loc; |
d983da9c | 3514 | |
3a5c3e22 | 3515 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 3516 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 3517 | { |
3a5c3e22 | 3518 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 3519 | { |
3a5c3e22 PA |
3520 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
3521 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
3522 | |
3523 | if (newaddr == start) | |
3524 | { | |
3a5c3e22 | 3525 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3526 | break; |
3527 | } | |
3528 | } | |
3529 | /* Exact match not required. Within range is sufficient. */ | |
3530 | else if (target_watchpoint_addr_within_range (¤t_target, | |
3531 | addr, loc->address, | |
3532 | loc->length)) | |
3533 | { | |
3a5c3e22 | 3534 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3535 | break; |
3536 | } | |
3537 | } | |
d983da9c DJ |
3538 | } |
3539 | ||
3540 | return 1; | |
3541 | } | |
3542 | ||
c906108c SS |
3543 | /* Possible return values for watchpoint_check (this can't be an enum |
3544 | because of check_errors). */ | |
3545 | /* The watchpoint has been deleted. */ | |
3546 | #define WP_DELETED 1 | |
3547 | /* The value has changed. */ | |
3548 | #define WP_VALUE_CHANGED 2 | |
3549 | /* The value has not changed. */ | |
3550 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3551 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3552 | #define WP_IGNORE 4 | |
c906108c SS |
3553 | |
3554 | #define BP_TEMPFLAG 1 | |
3555 | #define BP_HARDWAREFLAG 2 | |
3556 | ||
4a64f543 MS |
3557 | /* Evaluate watchpoint condition expression and check if its value |
3558 | changed. | |
553e4c11 JB |
3559 | |
3560 | P should be a pointer to struct bpstat, but is defined as a void * | |
3561 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3562 | |
3563 | static int | |
4efb68b1 | 3564 | watchpoint_check (void *p) |
c906108c SS |
3565 | { |
3566 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 3567 | struct watchpoint *b; |
c906108c SS |
3568 | struct frame_info *fr; |
3569 | int within_current_scope; | |
3570 | ||
f431efe5 | 3571 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3572 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 3573 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 3574 | |
f6bc2008 PA |
3575 | /* If this is a local watchpoint, we only want to check if the |
3576 | watchpoint frame is in scope if the current thread is the thread | |
3577 | that was used to create the watchpoint. */ | |
3578 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3579 | return WP_IGNORE; |
f6bc2008 | 3580 | |
c906108c SS |
3581 | if (b->exp_valid_block == NULL) |
3582 | within_current_scope = 1; | |
3583 | else | |
3584 | { | |
edb3359d DJ |
3585 | struct frame_info *frame = get_current_frame (); |
3586 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3587 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3588 | ||
4a64f543 MS |
3589 | /* in_function_epilogue_p() returns a non-zero value if we're |
3590 | still in the function but the stack frame has already been | |
3591 | invalidated. Since we can't rely on the values of local | |
3592 | variables after the stack has been destroyed, we are treating | |
3593 | the watchpoint in that state as `not changed' without further | |
3594 | checking. Don't mark watchpoints as changed if the current | |
3595 | frame is in an epilogue - even if they are in some other | |
3596 | frame, our view of the stack is likely to be wrong and | |
3597 | frame_find_by_id could error out. */ | |
a0f49112 | 3598 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3599 | return WP_IGNORE; |
a0f49112 | 3600 | |
101dcfbe | 3601 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3602 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3603 | |
3604 | /* If we've gotten confused in the unwinder, we might have | |
3605 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3606 | if (within_current_scope) |
3607 | { | |
3608 | struct symbol *function; | |
3609 | ||
3610 | function = get_frame_function (fr); | |
3611 | if (function == NULL | |
3612 | || !contained_in (b->exp_valid_block, | |
3613 | SYMBOL_BLOCK_VALUE (function))) | |
3614 | within_current_scope = 0; | |
3615 | } | |
69fbadd5 | 3616 | |
edb3359d | 3617 | if (within_current_scope) |
c906108c SS |
3618 | /* If we end up stopping, the current frame will get selected |
3619 | in normal_stop. So this call to select_frame won't affect | |
3620 | the user. */ | |
0f7d239c | 3621 | select_frame (fr); |
c906108c | 3622 | } |
c5aa993b | 3623 | |
c906108c SS |
3624 | if (within_current_scope) |
3625 | { | |
4a64f543 MS |
3626 | /* We use value_{,free_to_}mark because it could be a *long* |
3627 | time before we return to the command level and call | |
3628 | free_all_values. We can't call free_all_values because we | |
3629 | might be in the middle of evaluating a function call. */ | |
c906108c | 3630 | |
0cf6dd15 | 3631 | int pc = 0; |
9c06b0b4 | 3632 | struct value *mark; |
fa4727a6 DJ |
3633 | struct value *new_val; |
3634 | ||
3a5c3e22 | 3635 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
3636 | /* Since we don't know the exact trigger address (from |
3637 | stopped_data_address), just tell the user we've triggered | |
3638 | a mask watchpoint. */ | |
3639 | return WP_VALUE_CHANGED; | |
3640 | ||
3641 | mark = value_mark (); | |
0cf6dd15 | 3642 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3643 | |
4a64f543 MS |
3644 | /* We use value_equal_contents instead of value_equal because |
3645 | the latter coerces an array to a pointer, thus comparing just | |
3646 | the address of the array instead of its contents. This is | |
3647 | not what we want. */ | |
fa4727a6 | 3648 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3649 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3650 | { |
fa4727a6 DJ |
3651 | if (new_val != NULL) |
3652 | { | |
3653 | release_value (new_val); | |
3654 | value_free_to_mark (mark); | |
3655 | } | |
c906108c SS |
3656 | bs->old_val = b->val; |
3657 | b->val = new_val; | |
fa4727a6 | 3658 | b->val_valid = 1; |
c906108c SS |
3659 | return WP_VALUE_CHANGED; |
3660 | } | |
3661 | else | |
3662 | { | |
60e1c644 | 3663 | /* Nothing changed. */ |
c906108c | 3664 | value_free_to_mark (mark); |
c906108c SS |
3665 | return WP_VALUE_NOT_CHANGED; |
3666 | } | |
3667 | } | |
3668 | else | |
3669 | { | |
3670 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3671 | if we temporarily ignored the watchpoint, then when |
3672 | we reenter the block in which it is valid it contains | |
3673 | garbage (in the case of a function, it may have two | |
3674 | garbage values, one before and one after the prologue). | |
3675 | So we can't even detect the first assignment to it and | |
3676 | watch after that (since the garbage may or may not equal | |
3677 | the first value assigned). */ | |
348d480f PA |
3678 | /* We print all the stop information in |
3679 | breakpoint_ops->print_it, but in this case, by the time we | |
3680 | call breakpoint_ops->print_it this bp will be deleted | |
3681 | already. So we have no choice but print the information | |
3682 | here. */ | |
9dc5e2a9 | 3683 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3684 | ui_out_field_string |
3685 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3686 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 3687 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
3688 | ui_out_text (uiout, |
3689 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3690 | which its expression is valid.\n"); |
4ce44c66 | 3691 | |
cdac0397 | 3692 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 3693 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 3694 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3695 | |
3696 | return WP_DELETED; | |
3697 | } | |
3698 | } | |
3699 | ||
18a18393 | 3700 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
3701 | breakpoint location BL. This function does not check if we should |
3702 | stop, only if BL explains the stop. */ | |
3703 | ||
18a18393 | 3704 | static int |
6c95b8df PA |
3705 | bpstat_check_location (const struct bp_location *bl, |
3706 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3707 | { |
3708 | struct breakpoint *b = bl->owner; | |
3709 | ||
348d480f | 3710 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
3711 | gdb_assert (b != NULL); |
3712 | ||
348d480f | 3713 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); |
18a18393 VP |
3714 | } |
3715 | ||
3a5c3e22 PA |
3716 | /* Determine if the watched values have actually changed, and we |
3717 | should stop. If not, set BS->stop to 0. */ | |
3718 | ||
18a18393 VP |
3719 | static void |
3720 | bpstat_check_watchpoint (bpstat bs) | |
3721 | { | |
2bdf28a0 | 3722 | const struct bp_location *bl; |
3a5c3e22 | 3723 | struct watchpoint *b; |
2bdf28a0 JK |
3724 | |
3725 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3726 | bl = bs->bp_location_at; |
2bdf28a0 | 3727 | gdb_assert (bl != NULL); |
3a5c3e22 | 3728 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 3729 | gdb_assert (b != NULL); |
18a18393 | 3730 | |
18a18393 | 3731 | { |
18a18393 VP |
3732 | int must_check_value = 0; |
3733 | ||
3a5c3e22 | 3734 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
3735 | /* For a software watchpoint, we must always check the |
3736 | watched value. */ | |
3737 | must_check_value = 1; | |
3738 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3739 | /* We have a hardware watchpoint (read, write, or access) | |
3740 | and the target earlier reported an address watched by | |
3741 | this watchpoint. */ | |
3742 | must_check_value = 1; | |
3743 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 3744 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
3745 | /* We were stopped by a hardware watchpoint, but the target could |
3746 | not report the data address. We must check the watchpoint's | |
3747 | value. Access and read watchpoints are out of luck; without | |
3748 | a data address, we can't figure it out. */ | |
3749 | must_check_value = 1; | |
3a5c3e22 | 3750 | |
18a18393 VP |
3751 | if (must_check_value) |
3752 | { | |
3e43a32a MS |
3753 | char *message |
3754 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 3755 | b->base.number); |
18a18393 VP |
3756 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3757 | int e = catch_errors (watchpoint_check, bs, message, | |
3758 | RETURN_MASK_ALL); | |
3759 | do_cleanups (cleanups); | |
3760 | switch (e) | |
3761 | { | |
3762 | case WP_DELETED: | |
3763 | /* We've already printed what needs to be printed. */ | |
3764 | bs->print_it = print_it_done; | |
3765 | /* Stop. */ | |
3766 | break; | |
60e1c644 PA |
3767 | case WP_IGNORE: |
3768 | bs->print_it = print_it_noop; | |
3769 | bs->stop = 0; | |
3770 | break; | |
18a18393 | 3771 | case WP_VALUE_CHANGED: |
3a5c3e22 | 3772 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 3773 | { |
85d721b8 PA |
3774 | /* There are two cases to consider here: |
3775 | ||
4a64f543 | 3776 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3777 | In that case, trust the target, and always report |
3778 | the watchpoint hit to the user. Even though | |
3779 | reads don't cause value changes, the value may | |
3780 | have changed since the last time it was read, and | |
3781 | since we're not trapping writes, we will not see | |
3782 | those, and as such we should ignore our notion of | |
3783 | old value. | |
3784 | ||
4a64f543 | 3785 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3786 | reads and writes. There are two ways this may |
3787 | happen: | |
3788 | ||
4a64f543 | 3789 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3790 | reads only, but can break on accesses (reads or |
3791 | writes), such as e.g., x86. We detect this case | |
3792 | at the time we try to insert read watchpoints. | |
3793 | ||
4a64f543 | 3794 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3795 | watchpoints, but, the user set an access or write |
3796 | watchpoint watching the same memory as this read | |
3797 | watchpoint. | |
3798 | ||
3799 | If we're watching memory writes as well as reads, | |
3800 | ignore watchpoint hits when we find that the | |
3801 | value hasn't changed, as reads don't cause | |
3802 | changes. This still gives false positives when | |
3803 | the program writes the same value to memory as | |
3804 | what there was already in memory (we will confuse | |
3805 | it for a read), but it's much better than | |
3806 | nothing. */ | |
3807 | ||
3808 | int other_write_watchpoint = 0; | |
3809 | ||
3810 | if (bl->watchpoint_type == hw_read) | |
3811 | { | |
3812 | struct breakpoint *other_b; | |
3813 | ||
3814 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
3815 | if (other_b->type == bp_hardware_watchpoint |
3816 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 3817 | { |
3a5c3e22 PA |
3818 | struct watchpoint *other_w = |
3819 | (struct watchpoint *) other_b; | |
3820 | ||
3821 | if (other_w->watchpoint_triggered | |
3822 | == watch_triggered_yes) | |
3823 | { | |
3824 | other_write_watchpoint = 1; | |
3825 | break; | |
3826 | } | |
85d721b8 PA |
3827 | } |
3828 | } | |
3829 | ||
3830 | if (other_write_watchpoint | |
3831 | || bl->watchpoint_type == hw_access) | |
3832 | { | |
3833 | /* We're watching the same memory for writes, | |
3834 | and the value changed since the last time we | |
3835 | updated it, so this trap must be for a write. | |
3836 | Ignore it. */ | |
3837 | bs->print_it = print_it_noop; | |
3838 | bs->stop = 0; | |
3839 | } | |
18a18393 VP |
3840 | } |
3841 | break; | |
3842 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
3843 | if (b->base.type == bp_hardware_watchpoint |
3844 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
3845 | { |
3846 | /* Don't stop: write watchpoints shouldn't fire if | |
3847 | the value hasn't changed. */ | |
3848 | bs->print_it = print_it_noop; | |
3849 | bs->stop = 0; | |
3850 | } | |
3851 | /* Stop. */ | |
3852 | break; | |
3853 | default: | |
3854 | /* Can't happen. */ | |
3855 | case 0: | |
3856 | /* Error from catch_errors. */ | |
3a5c3e22 | 3857 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 3858 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
3859 | /* We've already printed what needs to be printed. */ |
3860 | bs->print_it = print_it_done; | |
3861 | break; | |
3862 | } | |
3863 | } | |
3864 | else /* must_check_value == 0 */ | |
3865 | { | |
3866 | /* This is a case where some watchpoint(s) triggered, but | |
3867 | not at the address of this watchpoint, or else no | |
3868 | watchpoint triggered after all. So don't print | |
3869 | anything for this watchpoint. */ | |
3870 | bs->print_it = print_it_noop; | |
3871 | bs->stop = 0; | |
3872 | } | |
3873 | } | |
3874 | } | |
3875 | ||
3876 | ||
3877 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3878 | of breakpoint referred to by BS. If we should not stop for this | |
3879 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 3880 | |
18a18393 VP |
3881 | static void |
3882 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3883 | { | |
3884 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3885 | const struct bp_location *bl; |
3886 | struct breakpoint *b; | |
3887 | ||
3888 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3889 | bl = bs->bp_location_at; |
2bdf28a0 | 3890 | gdb_assert (bl != NULL); |
f431efe5 | 3891 | b = bs->breakpoint_at; |
2bdf28a0 | 3892 | gdb_assert (b != NULL); |
18a18393 VP |
3893 | |
3894 | if (frame_id_p (b->frame_id) | |
edb3359d | 3895 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3896 | bs->stop = 0; |
3897 | else if (bs->stop) | |
3898 | { | |
3899 | int value_is_zero = 0; | |
60e1c644 PA |
3900 | struct expression *cond; |
3901 | ||
7371cf6d PM |
3902 | /* Evaluate Python breakpoints that have a "stop" |
3903 | method implemented. */ | |
3904 | if (b->py_bp_object) | |
3905 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
3906 | ||
60e1c644 | 3907 | if (is_watchpoint (b)) |
3a5c3e22 PA |
3908 | { |
3909 | struct watchpoint *w = (struct watchpoint *) b; | |
3910 | ||
3911 | cond = w->cond_exp; | |
3912 | } | |
60e1c644 PA |
3913 | else |
3914 | cond = bl->cond; | |
3915 | ||
f431efe5 | 3916 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 3917 | { |
60e1c644 | 3918 | int within_current_scope = 1; |
3a5c3e22 | 3919 | struct watchpoint * w; |
60e1c644 | 3920 | |
c5bc3a77 DJ |
3921 | /* We use value_mark and value_free_to_mark because it could |
3922 | be a long time before we return to the command level and | |
3923 | call free_all_values. We can't call free_all_values | |
3924 | because we might be in the middle of evaluating a | |
3925 | function call. */ | |
3926 | struct value *mark = value_mark (); | |
3927 | ||
3a5c3e22 PA |
3928 | if (is_watchpoint (b)) |
3929 | w = (struct watchpoint *) b; | |
3930 | else | |
3931 | w = NULL; | |
3932 | ||
edb3359d DJ |
3933 | /* Need to select the frame, with all that implies so that |
3934 | the conditions will have the right context. Because we | |
3935 | use the frame, we will not see an inlined function's | |
3936 | variables when we arrive at a breakpoint at the start | |
3937 | of the inlined function; the current frame will be the | |
3938 | call site. */ | |
3a5c3e22 | 3939 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
3940 | select_frame (get_current_frame ()); |
3941 | else | |
3942 | { | |
3943 | struct frame_info *frame; | |
3944 | ||
3945 | /* For local watchpoint expressions, which particular | |
3946 | instance of a local is being watched matters, so we | |
3947 | keep track of the frame to evaluate the expression | |
3948 | in. To evaluate the condition however, it doesn't | |
3949 | really matter which instantiation of the function | |
3950 | where the condition makes sense triggers the | |
3951 | watchpoint. This allows an expression like "watch | |
3952 | global if q > 10" set in `func', catch writes to | |
3953 | global on all threads that call `func', or catch | |
3954 | writes on all recursive calls of `func' by a single | |
3955 | thread. We simply always evaluate the condition in | |
3956 | the innermost frame that's executing where it makes | |
3957 | sense to evaluate the condition. It seems | |
3958 | intuitive. */ | |
3a5c3e22 | 3959 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
3960 | if (frame != NULL) |
3961 | select_frame (frame); | |
3962 | else | |
3963 | within_current_scope = 0; | |
3964 | } | |
3965 | if (within_current_scope) | |
3966 | value_is_zero | |
3967 | = catch_errors (breakpoint_cond_eval, cond, | |
3968 | "Error in testing breakpoint condition:\n", | |
3969 | RETURN_MASK_ALL); | |
3970 | else | |
3971 | { | |
3972 | warning (_("Watchpoint condition cannot be tested " | |
3973 | "in the current scope")); | |
3974 | /* If we failed to set the right context for this | |
3975 | watchpoint, unconditionally report it. */ | |
3976 | value_is_zero = 0; | |
3977 | } | |
4a64f543 | 3978 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 3979 | value_free_to_mark (mark); |
18a18393 | 3980 | } |
60e1c644 PA |
3981 | |
3982 | if (cond && value_is_zero) | |
18a18393 VP |
3983 | { |
3984 | bs->stop = 0; | |
3985 | } | |
3986 | else if (b->thread != -1 && b->thread != thread_id) | |
3987 | { | |
3988 | bs->stop = 0; | |
3989 | } | |
3990 | else if (b->ignore_count > 0) | |
3991 | { | |
3992 | b->ignore_count--; | |
3993 | annotate_ignore_count_change (); | |
3994 | bs->stop = 0; | |
4a64f543 | 3995 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 3996 | ++(b->hit_count); |
8d3788bd | 3997 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
3998 | } |
3999 | } | |
4000 | } | |
4001 | ||
4002 | ||
9709f61c | 4003 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4004 | BP_ADDR in thread PTID. |
c906108c | 4005 | |
d983da9c | 4006 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4007 | don't understand this stop. Result is a chain of bpstat's such |
4008 | that: | |
c906108c | 4009 | |
c5aa993b | 4010 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4011 | |
c5aa993b | 4012 | if we understand why we stopped, the result is not null. |
c906108c | 4013 | |
c5aa993b JM |
4014 | Each element of the chain refers to a particular breakpoint or |
4015 | watchpoint at which we have stopped. (We may have stopped for | |
4016 | several reasons concurrently.) | |
c906108c | 4017 | |
c5aa993b JM |
4018 | Each element of the chain has valid next, breakpoint_at, |
4019 | commands, FIXME??? fields. */ | |
c906108c SS |
4020 | |
4021 | bpstat | |
6c95b8df PA |
4022 | bpstat_stop_status (struct address_space *aspace, |
4023 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4024 | { |
0d381245 | 4025 | struct breakpoint *b = NULL; |
afe38095 | 4026 | struct bp_location *bl; |
20874c92 | 4027 | struct bp_location *loc; |
5760d0ab JK |
4028 | /* First item of allocated bpstat's. */ |
4029 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4030 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4031 | bpstat bs; |
20874c92 | 4032 | int ix; |
429374b8 | 4033 | int need_remove_insert; |
f431efe5 | 4034 | int removed_any; |
c906108c | 4035 | |
f431efe5 PA |
4036 | /* First, build the bpstat chain with locations that explain a |
4037 | target stop, while being careful to not set the target running, | |
4038 | as that may invalidate locations (in particular watchpoint | |
4039 | locations are recreated). Resuming will happen here with | |
4040 | breakpoint conditions or watchpoint expressions that include | |
4041 | inferior function calls. */ | |
c5aa993b | 4042 | |
429374b8 JK |
4043 | ALL_BREAKPOINTS (b) |
4044 | { | |
4045 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4046 | continue; | |
a5606eee | 4047 | |
429374b8 JK |
4048 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4049 | { | |
4a64f543 MS |
4050 | /* For hardware watchpoints, we look only at the first |
4051 | location. The watchpoint_check function will work on the | |
4052 | entire expression, not the individual locations. For | |
4053 | read watchpoints, the watchpoints_triggered function has | |
4054 | checked all locations already. */ | |
429374b8 JK |
4055 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4056 | break; | |
18a18393 | 4057 | |
429374b8 JK |
4058 | if (bl->shlib_disabled) |
4059 | continue; | |
c5aa993b | 4060 | |
429374b8 JK |
4061 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4062 | continue; | |
c5aa993b | 4063 | |
4a64f543 MS |
4064 | /* Come here if it's a watchpoint, or if the break address |
4065 | matches. */ | |
c5aa993b | 4066 | |
4a64f543 MS |
4067 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4068 | explain stop. */ | |
c5aa993b | 4069 | |
f431efe5 PA |
4070 | /* Assume we stop. Should we find a watchpoint that is not |
4071 | actually triggered, or if the condition of the breakpoint | |
4072 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4073 | bs->stop = 1; |
4074 | bs->print = 1; | |
d983da9c | 4075 | |
f431efe5 PA |
4076 | /* If this is a scope breakpoint, mark the associated |
4077 | watchpoint as triggered so that we will handle the | |
4078 | out-of-scope event. We'll get to the watchpoint next | |
4079 | iteration. */ | |
d0fb5eae | 4080 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4081 | { |
4082 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4083 | ||
4084 | w->watchpoint_triggered = watch_triggered_yes; | |
4085 | } | |
f431efe5 PA |
4086 | } |
4087 | } | |
4088 | ||
4089 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4090 | { | |
f1310107 | 4091 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4092 | { |
5760d0ab | 4093 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4094 | /* For hits of moribund locations, we should just proceed. */ |
4095 | bs->stop = 0; | |
4096 | bs->print = 0; | |
4097 | bs->print_it = print_it_noop; | |
4098 | } | |
4099 | } | |
4100 | ||
f431efe5 PA |
4101 | /* Now go through the locations that caused the target to stop, and |
4102 | check whether we're interested in reporting this stop to higher | |
4103 | layers, or whether we should resume the target transparently. */ | |
4104 | ||
4105 | removed_any = 0; | |
4106 | ||
5760d0ab | 4107 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4108 | { |
4109 | if (!bs->stop) | |
4110 | continue; | |
4111 | ||
f431efe5 | 4112 | b = bs->breakpoint_at; |
348d480f PA |
4113 | b->ops->check_status (bs); |
4114 | if (bs->stop) | |
28010a5d | 4115 | { |
348d480f | 4116 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4117 | |
429374b8 JK |
4118 | if (bs->stop) |
4119 | { | |
4120 | ++(b->hit_count); | |
8d3788bd | 4121 | observer_notify_breakpoint_modified (b); |
c906108c | 4122 | |
4a64f543 | 4123 | /* We will stop here. */ |
429374b8 JK |
4124 | if (b->disposition == disp_disable) |
4125 | { | |
4126 | if (b->enable_state != bp_permanent) | |
4127 | b->enable_state = bp_disabled; | |
f431efe5 | 4128 | removed_any = 1; |
429374b8 JK |
4129 | } |
4130 | if (b->silent) | |
4131 | bs->print = 0; | |
4132 | bs->commands = b->commands; | |
9add0f1b TT |
4133 | incref_counted_command_line (bs->commands); |
4134 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4135 | if (bs->commands_left | |
4136 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4137 | || (xdb_commands | |
4138 | && strcmp ("Q", | |
4139 | bs->commands_left->line) == 0))) | |
429374b8 | 4140 | { |
9add0f1b | 4141 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4142 | bs->print = 0; |
4143 | } | |
429374b8 JK |
4144 | } |
4145 | ||
e5dd4106 | 4146 | /* Print nothing for this entry if we don't stop or don't print. */ |
429374b8 JK |
4147 | if (bs->stop == 0 || bs->print == 0) |
4148 | bs->print_it = print_it_noop; | |
348d480f | 4149 | } |
429374b8 | 4150 | } |
876fa593 | 4151 | |
d983da9c DJ |
4152 | /* If we aren't stopping, the value of some hardware watchpoint may |
4153 | not have changed, but the intermediate memory locations we are | |
4154 | watching may have. Don't bother if we're stopping; this will get | |
4155 | done later. */ | |
d832cb68 | 4156 | need_remove_insert = 0; |
5760d0ab JK |
4157 | if (! bpstat_causes_stop (bs_head)) |
4158 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4159 | if (!bs->stop |
f431efe5 PA |
4160 | && bs->breakpoint_at |
4161 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4162 | { |
3a5c3e22 PA |
4163 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
4164 | ||
4165 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 4166 | need_remove_insert = 1; |
d983da9c DJ |
4167 | } |
4168 | ||
d832cb68 | 4169 | if (need_remove_insert) |
2d134ed3 | 4170 | update_global_location_list (1); |
f431efe5 PA |
4171 | else if (removed_any) |
4172 | update_global_location_list (0); | |
d832cb68 | 4173 | |
5760d0ab | 4174 | return bs_head; |
c906108c | 4175 | } |
628fe4e4 JK |
4176 | |
4177 | static void | |
4178 | handle_jit_event (void) | |
4179 | { | |
4180 | struct frame_info *frame; | |
4181 | struct gdbarch *gdbarch; | |
4182 | ||
4183 | /* Switch terminal for any messages produced by | |
4184 | breakpoint_re_set. */ | |
4185 | target_terminal_ours_for_output (); | |
4186 | ||
4187 | frame = get_current_frame (); | |
4188 | gdbarch = get_frame_arch (frame); | |
4189 | ||
4190 | jit_event_handler (gdbarch); | |
4191 | ||
4192 | target_terminal_inferior (); | |
4193 | } | |
4194 | ||
4195 | /* Prepare WHAT final decision for infrun. */ | |
4196 | ||
4197 | /* Decide what infrun needs to do with this bpstat. */ | |
4198 | ||
c906108c | 4199 | struct bpstat_what |
0e30163f | 4200 | bpstat_what (bpstat bs_head) |
c906108c | 4201 | { |
c906108c | 4202 | struct bpstat_what retval; |
628fe4e4 JK |
4203 | /* We need to defer calling `solib_add', as adding new symbols |
4204 | resets breakpoints, which in turn deletes breakpoint locations, | |
4205 | and hence may clear unprocessed entries in the BS chain. */ | |
4206 | int shlib_event = 0; | |
4207 | int jit_event = 0; | |
0e30163f | 4208 | bpstat bs; |
c906108c | 4209 | |
628fe4e4 | 4210 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4211 | retval.call_dummy = STOP_NONE; |
186c406b | 4212 | retval.is_longjmp = 0; |
628fe4e4 | 4213 | |
0e30163f | 4214 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4215 | { |
628fe4e4 JK |
4216 | /* Extract this BS's action. After processing each BS, we check |
4217 | if its action overrides all we've seem so far. */ | |
4218 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4219 | enum bptype bptype; | |
4220 | ||
c906108c | 4221 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4222 | { |
4223 | /* I suspect this can happen if it was a momentary | |
4224 | breakpoint which has since been deleted. */ | |
4225 | bptype = bp_none; | |
4226 | } | |
20874c92 | 4227 | else |
f431efe5 | 4228 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4229 | |
4230 | switch (bptype) | |
c906108c SS |
4231 | { |
4232 | case bp_none: | |
628fe4e4 | 4233 | break; |
c906108c SS |
4234 | case bp_breakpoint: |
4235 | case bp_hardware_breakpoint: | |
4236 | case bp_until: | |
4237 | case bp_finish: | |
4238 | if (bs->stop) | |
4239 | { | |
4240 | if (bs->print) | |
628fe4e4 | 4241 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4242 | else |
628fe4e4 | 4243 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4244 | } |
4245 | else | |
628fe4e4 | 4246 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4247 | break; |
4248 | case bp_watchpoint: | |
4249 | case bp_hardware_watchpoint: | |
4250 | case bp_read_watchpoint: | |
4251 | case bp_access_watchpoint: | |
4252 | if (bs->stop) | |
4253 | { | |
4254 | if (bs->print) | |
628fe4e4 | 4255 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4256 | else |
628fe4e4 | 4257 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4258 | } |
4259 | else | |
628fe4e4 JK |
4260 | { |
4261 | /* There was a watchpoint, but we're not stopping. | |
4262 | This requires no further action. */ | |
4263 | } | |
c906108c SS |
4264 | break; |
4265 | case bp_longjmp: | |
186c406b | 4266 | case bp_exception: |
628fe4e4 | 4267 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4268 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4269 | break; |
4270 | case bp_longjmp_resume: | |
186c406b | 4271 | case bp_exception_resume: |
628fe4e4 | 4272 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4273 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4274 | break; |
4275 | case bp_step_resume: | |
4276 | if (bs->stop) | |
628fe4e4 JK |
4277 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4278 | else | |
c906108c | 4279 | { |
628fe4e4 JK |
4280 | /* It is for the wrong frame. */ |
4281 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4282 | } |
c906108c | 4283 | break; |
2c03e5be PA |
4284 | case bp_hp_step_resume: |
4285 | if (bs->stop) | |
4286 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
4287 | else | |
4288 | { | |
4289 | /* It is for the wrong frame. */ | |
4290 | this_action = BPSTAT_WHAT_SINGLE; | |
4291 | } | |
4292 | break; | |
c906108c | 4293 | case bp_watchpoint_scope: |
c4093a6a | 4294 | case bp_thread_event: |
1900040c | 4295 | case bp_overlay_event: |
0fd8e87f | 4296 | case bp_longjmp_master: |
aa7d318d | 4297 | case bp_std_terminate_master: |
186c406b | 4298 | case bp_exception_master: |
628fe4e4 | 4299 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4300 | break; |
ce78b96d | 4301 | case bp_catchpoint: |
c5aa993b JM |
4302 | if (bs->stop) |
4303 | { | |
4304 | if (bs->print) | |
628fe4e4 | 4305 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4306 | else |
628fe4e4 | 4307 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4308 | } |
4309 | else | |
628fe4e4 JK |
4310 | { |
4311 | /* There was a catchpoint, but we're not stopping. | |
4312 | This requires no further action. */ | |
4313 | } | |
4314 | break; | |
4315 | case bp_shlib_event: | |
4316 | shlib_event = 1; | |
4317 | ||
4318 | /* If requested, stop when the dynamic linker notifies GDB | |
4319 | of events. This allows the user to get control and place | |
4320 | breakpoints in initializer routines for dynamically | |
4321 | loaded objects (among other things). */ | |
4322 | if (stop_on_solib_events) | |
4323 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4324 | else | |
4325 | this_action = BPSTAT_WHAT_SINGLE; | |
4326 | break; | |
4327 | case bp_jit_event: | |
4328 | jit_event = 1; | |
4329 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4330 | break; |
c906108c | 4331 | case bp_call_dummy: |
53a5351d JM |
4332 | /* Make sure the action is stop (silent or noisy), |
4333 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4334 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4335 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4336 | break; |
4337 | case bp_std_terminate: | |
4338 | /* Make sure the action is stop (silent or noisy), | |
4339 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4340 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4341 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4342 | break; |
1042e4c0 | 4343 | case bp_tracepoint: |
7a697b8d | 4344 | case bp_fast_tracepoint: |
0fb4aa4b | 4345 | case bp_static_tracepoint: |
1042e4c0 SS |
4346 | /* Tracepoint hits should not be reported back to GDB, and |
4347 | if one got through somehow, it should have been filtered | |
4348 | out already. */ | |
4349 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4350 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4351 | break; |
4352 | case bp_gnu_ifunc_resolver: | |
4353 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4354 | this_action = BPSTAT_WHAT_SINGLE; | |
4355 | break; | |
4356 | case bp_gnu_ifunc_resolver_return: | |
4357 | /* The breakpoint will be removed, execution will restart from the | |
4358 | PC of the former breakpoint. */ | |
4359 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4360 | break; | |
628fe4e4 JK |
4361 | default: |
4362 | internal_error (__FILE__, __LINE__, | |
4363 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4364 | } |
628fe4e4 JK |
4365 | |
4366 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4367 | } |
628fe4e4 | 4368 | |
0e30163f JK |
4369 | /* These operations may affect the bs->breakpoint_at state so they are |
4370 | delayed after MAIN_ACTION is decided above. */ | |
4371 | ||
628fe4e4 JK |
4372 | if (shlib_event) |
4373 | { | |
4374 | if (debug_infrun) | |
4375 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4376 | ||
4377 | /* Check for any newly added shared libraries if we're supposed | |
4378 | to be adding them automatically. */ | |
4379 | ||
4380 | /* Switch terminal for any messages produced by | |
4381 | breakpoint_re_set. */ | |
4382 | target_terminal_ours_for_output (); | |
4383 | ||
4384 | #ifdef SOLIB_ADD | |
4385 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4386 | #else | |
4387 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4388 | #endif | |
4389 | ||
4390 | target_terminal_inferior (); | |
4391 | } | |
4392 | ||
4393 | if (jit_event) | |
4394 | { | |
4395 | if (debug_infrun) | |
4396 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4397 | ||
4398 | handle_jit_event (); | |
4399 | } | |
4400 | ||
0e30163f JK |
4401 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4402 | { | |
4403 | struct breakpoint *b = bs->breakpoint_at; | |
4404 | ||
4405 | if (b == NULL) | |
4406 | continue; | |
4407 | switch (b->type) | |
4408 | { | |
4409 | case bp_gnu_ifunc_resolver: | |
4410 | gnu_ifunc_resolver_stop (b); | |
4411 | break; | |
4412 | case bp_gnu_ifunc_resolver_return: | |
4413 | gnu_ifunc_resolver_return_stop (b); | |
4414 | break; | |
4415 | } | |
4416 | } | |
4417 | ||
c906108c SS |
4418 | return retval; |
4419 | } | |
4420 | ||
4421 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4422 | without hardware support). This isn't related to a specific bpstat, | |
4423 | just to things like whether watchpoints are set. */ | |
4424 | ||
c5aa993b | 4425 | int |
fba45db2 | 4426 | bpstat_should_step (void) |
c906108c SS |
4427 | { |
4428 | struct breakpoint *b; | |
cc59ec59 | 4429 | |
c906108c | 4430 | ALL_BREAKPOINTS (b) |
717a8278 | 4431 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4432 | return 1; |
c906108c SS |
4433 | return 0; |
4434 | } | |
4435 | ||
67822962 PA |
4436 | int |
4437 | bpstat_causes_stop (bpstat bs) | |
4438 | { | |
4439 | for (; bs != NULL; bs = bs->next) | |
4440 | if (bs->stop) | |
4441 | return 1; | |
4442 | ||
4443 | return 0; | |
4444 | } | |
4445 | ||
c906108c | 4446 | \f |
c5aa993b | 4447 | |
170b53b2 UW |
4448 | /* Compute a string of spaces suitable to indent the next line |
4449 | so it starts at the position corresponding to the table column | |
4450 | named COL_NAME in the currently active table of UIOUT. */ | |
4451 | ||
4452 | static char * | |
4453 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4454 | { | |
4455 | static char wrap_indent[80]; | |
4456 | int i, total_width, width, align; | |
4457 | char *text; | |
4458 | ||
4459 | total_width = 0; | |
4460 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4461 | { | |
4462 | if (strcmp (text, col_name) == 0) | |
4463 | { | |
4464 | gdb_assert (total_width < sizeof wrap_indent); | |
4465 | memset (wrap_indent, ' ', total_width); | |
4466 | wrap_indent[total_width] = 0; | |
4467 | ||
4468 | return wrap_indent; | |
4469 | } | |
4470 | ||
4471 | total_width += width + 1; | |
4472 | } | |
4473 | ||
4474 | return NULL; | |
4475 | } | |
4476 | ||
859825b8 JK |
4477 | /* Print the LOC location out of the list of B->LOC locations. */ |
4478 | ||
170b53b2 UW |
4479 | static void |
4480 | print_breakpoint_location (struct breakpoint *b, | |
4481 | struct bp_location *loc) | |
0d381245 | 4482 | { |
6c95b8df PA |
4483 | struct cleanup *old_chain = save_current_program_space (); |
4484 | ||
859825b8 JK |
4485 | if (loc != NULL && loc->shlib_disabled) |
4486 | loc = NULL; | |
4487 | ||
6c95b8df PA |
4488 | if (loc != NULL) |
4489 | set_current_program_space (loc->pspace); | |
4490 | ||
56435ebe TT |
4491 | if (b->display_canonical) |
4492 | ui_out_field_string (uiout, "what", b->addr_string); | |
4493 | else if (b->source_file && loc) | |
0d381245 VP |
4494 | { |
4495 | struct symbol *sym | |
4496 | = find_pc_sect_function (loc->address, loc->section); | |
4497 | if (sym) | |
4498 | { | |
4499 | ui_out_text (uiout, "in "); | |
4500 | ui_out_field_string (uiout, "func", | |
4501 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4502 | ui_out_text (uiout, " "); |
4503 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4504 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4505 | } |
4506 | ui_out_field_string (uiout, "file", b->source_file); | |
4507 | ui_out_text (uiout, ":"); | |
4508 | ||
4509 | if (ui_out_is_mi_like_p (uiout)) | |
4510 | { | |
4511 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4512 | char *fullname = symtab_to_fullname (sal.symtab); | |
4513 | ||
4514 | if (fullname) | |
4515 | ui_out_field_string (uiout, "fullname", fullname); | |
4516 | } | |
4517 | ||
4518 | ui_out_field_int (uiout, "line", b->line_number); | |
4519 | } | |
859825b8 | 4520 | else if (loc) |
0d381245 | 4521 | { |
170b53b2 UW |
4522 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4523 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4524 | ||
22e722e1 DJ |
4525 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4526 | demangle, ""); | |
0d381245 | 4527 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4528 | |
4529 | do_cleanups (stb_chain); | |
0d381245 | 4530 | } |
859825b8 JK |
4531 | else |
4532 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4533 | |
4534 | do_cleanups (old_chain); | |
0d381245 VP |
4535 | } |
4536 | ||
269b11a2 PA |
4537 | static const char * |
4538 | bptype_string (enum bptype type) | |
c906108c | 4539 | { |
c4093a6a JM |
4540 | struct ep_type_description |
4541 | { | |
4542 | enum bptype type; | |
4543 | char *description; | |
4544 | }; | |
4545 | static struct ep_type_description bptypes[] = | |
c906108c | 4546 | { |
c5aa993b JM |
4547 | {bp_none, "?deleted?"}, |
4548 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4549 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4550 | {bp_until, "until"}, |
4551 | {bp_finish, "finish"}, | |
4552 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4553 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4554 | {bp_read_watchpoint, "read watchpoint"}, |
4555 | {bp_access_watchpoint, "acc watchpoint"}, | |
4556 | {bp_longjmp, "longjmp"}, | |
4557 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4558 | {bp_exception, "exception"}, |
4559 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4560 | {bp_step_resume, "step resume"}, |
2c03e5be | 4561 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
4562 | {bp_watchpoint_scope, "watchpoint scope"}, |
4563 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4564 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4565 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4566 | {bp_thread_event, "thread events"}, |
1900040c | 4567 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4568 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4569 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4570 | {bp_exception_master, "exception master"}, |
ce78b96d | 4571 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4572 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4573 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4574 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4575 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4576 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4577 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4578 | }; |
269b11a2 PA |
4579 | |
4580 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4581 | || ((int) type != bptypes[(int) type].type)) | |
4582 | internal_error (__FILE__, __LINE__, | |
4583 | _("bptypes table does not describe type #%d."), | |
4584 | (int) type); | |
4585 | ||
4586 | return bptypes[(int) type].description; | |
4587 | } | |
4588 | ||
4589 | /* Print B to gdb_stdout. */ | |
4590 | ||
4591 | static void | |
4592 | print_one_breakpoint_location (struct breakpoint *b, | |
4593 | struct bp_location *loc, | |
4594 | int loc_number, | |
4595 | struct bp_location **last_loc, | |
269b11a2 PA |
4596 | int allflag) |
4597 | { | |
4598 | struct command_line *l; | |
c2c6d25f | 4599 | static char bpenables[] = "nynny"; |
c906108c | 4600 | |
0d381245 VP |
4601 | int header_of_multiple = 0; |
4602 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4603 | struct value_print_options opts; |
4604 | ||
4605 | get_user_print_options (&opts); | |
0d381245 VP |
4606 | |
4607 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4608 | /* See comment in print_one_breakpoint concerning treatment of |
4609 | breakpoints with single disabled location. */ | |
0d381245 VP |
4610 | if (loc == NULL |
4611 | && (b->loc != NULL | |
4612 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4613 | header_of_multiple = 1; | |
4614 | if (loc == NULL) | |
4615 | loc = b->loc; | |
4616 | ||
c4093a6a JM |
4617 | annotate_record (); |
4618 | ||
4619 | /* 1 */ | |
4620 | annotate_field (0); | |
0d381245 VP |
4621 | if (part_of_multiple) |
4622 | { | |
4623 | char *formatted; | |
0c6773c1 | 4624 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4625 | ui_out_field_string (uiout, "number", formatted); |
4626 | xfree (formatted); | |
4627 | } | |
4628 | else | |
4629 | { | |
4630 | ui_out_field_int (uiout, "number", b->number); | |
4631 | } | |
c4093a6a JM |
4632 | |
4633 | /* 2 */ | |
4634 | annotate_field (1); | |
0d381245 VP |
4635 | if (part_of_multiple) |
4636 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4637 | else |
4638 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4639 | |
4640 | /* 3 */ | |
4641 | annotate_field (2); | |
0d381245 VP |
4642 | if (part_of_multiple) |
4643 | ui_out_field_skip (uiout, "disp"); | |
4644 | else | |
2cec12e5 | 4645 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4646 | |
c4093a6a JM |
4647 | |
4648 | /* 4 */ | |
4649 | annotate_field (3); | |
0d381245 | 4650 | if (part_of_multiple) |
54e52265 | 4651 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4652 | else |
4a64f543 MS |
4653 | ui_out_field_fmt (uiout, "enabled", "%c", |
4654 | bpenables[(int) b->enable_state]); | |
54e52265 | 4655 | ui_out_spaces (uiout, 2); |
0d381245 | 4656 | |
c4093a6a JM |
4657 | |
4658 | /* 5 and 6 */ | |
3086aeae | 4659 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4660 | { |
4a64f543 MS |
4661 | /* Although the print_one can possibly print all locations, |
4662 | calling it here is not likely to get any nice result. So, | |
4663 | make sure there's just one location. */ | |
0d381245 | 4664 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4665 | b->ops->print_one (b, last_loc); |
0d381245 | 4666 | } |
3086aeae DJ |
4667 | else |
4668 | switch (b->type) | |
4669 | { | |
4670 | case bp_none: | |
4671 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4672 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4673 | break; |
c906108c | 4674 | |
3086aeae DJ |
4675 | case bp_watchpoint: |
4676 | case bp_hardware_watchpoint: | |
4677 | case bp_read_watchpoint: | |
4678 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4679 | { |
4680 | struct watchpoint *w = (struct watchpoint *) b; | |
4681 | ||
4682 | /* Field 4, the address, is omitted (which makes the columns | |
4683 | not line up too nicely with the headers, but the effect | |
4684 | is relatively readable). */ | |
4685 | if (opts.addressprint) | |
4686 | ui_out_field_skip (uiout, "addr"); | |
4687 | annotate_field (5); | |
4688 | ui_out_field_string (uiout, "what", w->exp_string); | |
4689 | } | |
3086aeae DJ |
4690 | break; |
4691 | ||
3086aeae DJ |
4692 | case bp_breakpoint: |
4693 | case bp_hardware_breakpoint: | |
4694 | case bp_until: | |
4695 | case bp_finish: | |
4696 | case bp_longjmp: | |
4697 | case bp_longjmp_resume: | |
186c406b TT |
4698 | case bp_exception: |
4699 | case bp_exception_resume: | |
3086aeae | 4700 | case bp_step_resume: |
2c03e5be | 4701 | case bp_hp_step_resume: |
3086aeae DJ |
4702 | case bp_watchpoint_scope: |
4703 | case bp_call_dummy: | |
aa7d318d | 4704 | case bp_std_terminate: |
3086aeae DJ |
4705 | case bp_shlib_event: |
4706 | case bp_thread_event: | |
4707 | case bp_overlay_event: | |
0fd8e87f | 4708 | case bp_longjmp_master: |
aa7d318d | 4709 | case bp_std_terminate_master: |
186c406b | 4710 | case bp_exception_master: |
1042e4c0 | 4711 | case bp_tracepoint: |
7a697b8d | 4712 | case bp_fast_tracepoint: |
0fb4aa4b | 4713 | case bp_static_tracepoint: |
4efc6507 | 4714 | case bp_jit_event: |
0e30163f JK |
4715 | case bp_gnu_ifunc_resolver: |
4716 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4717 | if (opts.addressprint) |
3086aeae DJ |
4718 | { |
4719 | annotate_field (4); | |
54e52265 | 4720 | if (header_of_multiple) |
0d381245 | 4721 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4722 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4723 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4724 | else |
5af949e3 UW |
4725 | ui_out_field_core_addr (uiout, "addr", |
4726 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4727 | } |
4728 | annotate_field (5); | |
0d381245 | 4729 | if (!header_of_multiple) |
170b53b2 | 4730 | print_breakpoint_location (b, loc); |
0d381245 | 4731 | if (b->loc) |
a6d9a66e | 4732 | *last_loc = b->loc; |
3086aeae DJ |
4733 | break; |
4734 | } | |
c906108c | 4735 | |
6c95b8df PA |
4736 | |
4737 | /* For backward compatibility, don't display inferiors unless there | |
4738 | are several. */ | |
4739 | if (loc != NULL | |
4740 | && !header_of_multiple | |
4741 | && (allflag | |
4742 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4743 | && (number_of_program_spaces () > 1 | |
4744 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4745 | /* LOC is for existing B, it cannot be in |
4746 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4747 | && loc->owner->type != bp_catchpoint))) |
4748 | { | |
4749 | struct inferior *inf; | |
4750 | int first = 1; | |
4751 | ||
4752 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4753 | { | |
4754 | if (inf->pspace == loc->pspace) | |
4755 | { | |
4756 | if (first) | |
4757 | { | |
4758 | first = 0; | |
4759 | ui_out_text (uiout, " inf "); | |
4760 | } | |
4761 | else | |
4762 | ui_out_text (uiout, ", "); | |
4763 | ui_out_text (uiout, plongest (inf->num)); | |
4764 | } | |
4765 | } | |
4766 | } | |
4767 | ||
4a306c9a | 4768 | if (!part_of_multiple) |
c4093a6a | 4769 | { |
4a306c9a JB |
4770 | if (b->thread != -1) |
4771 | { | |
4772 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4773 | "stop only in" line a little further down. */ |
4a306c9a JB |
4774 | ui_out_text (uiout, " thread "); |
4775 | ui_out_field_int (uiout, "thread", b->thread); | |
4776 | } | |
4777 | else if (b->task != 0) | |
4778 | { | |
4779 | ui_out_text (uiout, " task "); | |
4780 | ui_out_field_int (uiout, "task", b->task); | |
4781 | } | |
c4093a6a | 4782 | } |
f1310107 | 4783 | |
8b93c638 | 4784 | ui_out_text (uiout, "\n"); |
f1310107 | 4785 | |
348d480f | 4786 | if (!part_of_multiple) |
f1310107 TJB |
4787 | b->ops->print_one_detail (b, uiout); |
4788 | ||
0d381245 | 4789 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4790 | { |
4791 | annotate_field (6); | |
8b93c638 | 4792 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 4793 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 4794 | the frame ID. */ |
5af949e3 UW |
4795 | ui_out_field_core_addr (uiout, "frame", |
4796 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4797 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4798 | } |
4799 | ||
28010a5d | 4800 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
4801 | { |
4802 | annotate_field (7); | |
d77f58be | 4803 | if (is_tracepoint (b)) |
1042e4c0 SS |
4804 | ui_out_text (uiout, "\ttrace only if "); |
4805 | else | |
4806 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4807 | ui_out_field_string (uiout, "cond", b->cond_string); |
4808 | ui_out_text (uiout, "\n"); | |
4809 | } | |
4810 | ||
0d381245 | 4811 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4812 | { |
4a64f543 | 4813 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4814 | ui_out_text (uiout, "\tstop only in thread "); |
4815 | ui_out_field_int (uiout, "thread", b->thread); | |
4816 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4817 | } |
4818 | ||
63c715c6 | 4819 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4820 | { |
4a64f543 | 4821 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4822 | if (ep_is_catchpoint (b)) |
4823 | ui_out_text (uiout, "\tcatchpoint"); | |
4824 | else | |
4825 | ui_out_text (uiout, "\tbreakpoint"); | |
4826 | ui_out_text (uiout, " already hit "); | |
4827 | ui_out_field_int (uiout, "times", b->hit_count); | |
4828 | if (b->hit_count == 1) | |
4829 | ui_out_text (uiout, " time\n"); | |
4830 | else | |
4831 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4832 | } |
4833 | ||
4a64f543 MS |
4834 | /* Output the count also if it is zero, but only if this is mi. |
4835 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4836 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4837 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4838 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4839 | |
0d381245 | 4840 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4841 | { |
4842 | annotate_field (8); | |
8b93c638 JM |
4843 | ui_out_text (uiout, "\tignore next "); |
4844 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4845 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4846 | } |
059fb39f | 4847 | |
9add0f1b | 4848 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4849 | if (!part_of_multiple && l) |
c4093a6a | 4850 | { |
3b31d625 EZ |
4851 | struct cleanup *script_chain; |
4852 | ||
c4093a6a | 4853 | annotate_field (9); |
3b31d625 | 4854 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4855 | print_command_lines (uiout, l, 4); |
3b31d625 | 4856 | do_cleanups (script_chain); |
c4093a6a | 4857 | } |
d24317b4 | 4858 | |
d9b3f62e | 4859 | if (is_tracepoint (b)) |
1042e4c0 | 4860 | { |
d9b3f62e PA |
4861 | struct tracepoint *t = (struct tracepoint *) b; |
4862 | ||
4863 | if (!part_of_multiple && t->pass_count) | |
4864 | { | |
4865 | annotate_field (10); | |
4866 | ui_out_text (uiout, "\tpass count "); | |
4867 | ui_out_field_int (uiout, "pass", t->pass_count); | |
4868 | ui_out_text (uiout, " \n"); | |
4869 | } | |
1042e4c0 SS |
4870 | } |
4871 | ||
d24317b4 VP |
4872 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4873 | { | |
3a5c3e22 PA |
4874 | if (is_watchpoint (b)) |
4875 | { | |
4876 | struct watchpoint *w = (struct watchpoint *) b; | |
4877 | ||
4878 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
4879 | } | |
4880 | else if (b->addr_string) | |
d24317b4 | 4881 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 4882 | } |
c4093a6a | 4883 | } |
c5aa993b | 4884 | |
0d381245 VP |
4885 | static void |
4886 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 4887 | struct bp_location **last_loc, |
6c95b8df | 4888 | int allflag) |
0d381245 | 4889 | { |
8d3788bd VP |
4890 | struct cleanup *bkpt_chain; |
4891 | ||
4892 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
4893 | ||
12c5a436 | 4894 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 4895 | do_cleanups (bkpt_chain); |
0d381245 VP |
4896 | |
4897 | /* If this breakpoint has custom print function, | |
4898 | it's already printed. Otherwise, print individual | |
4899 | locations, if any. */ | |
4900 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4901 | { | |
4a64f543 MS |
4902 | /* If breakpoint has a single location that is disabled, we |
4903 | print it as if it had several locations, since otherwise it's | |
4904 | hard to represent "breakpoint enabled, location disabled" | |
4905 | situation. | |
4906 | ||
4907 | Note that while hardware watchpoints have several locations | |
a3be7890 | 4908 | internally, that's not a property exposed to user. */ |
0d381245 | 4909 | if (b->loc |
a5606eee | 4910 | && !is_hardware_watchpoint (b) |
8d3788bd | 4911 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
4912 | { |
4913 | struct bp_location *loc; | |
4914 | int n = 1; | |
8d3788bd | 4915 | |
0d381245 | 4916 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
4917 | { |
4918 | struct cleanup *inner2 = | |
4919 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
4920 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
4921 | do_cleanups (inner2); | |
4922 | } | |
0d381245 VP |
4923 | } |
4924 | } | |
4925 | } | |
4926 | ||
a6d9a66e UW |
4927 | static int |
4928 | breakpoint_address_bits (struct breakpoint *b) | |
4929 | { | |
4930 | int print_address_bits = 0; | |
4931 | struct bp_location *loc; | |
4932 | ||
4933 | for (loc = b->loc; loc; loc = loc->next) | |
4934 | { | |
c7437ca6 PA |
4935 | int addr_bit; |
4936 | ||
4937 | /* Software watchpoints that aren't watching memory don't have | |
4938 | an address to print. */ | |
4939 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4940 | continue; | |
4941 | ||
4942 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4943 | if (addr_bit > print_address_bits) |
4944 | print_address_bits = addr_bit; | |
4945 | } | |
4946 | ||
4947 | return print_address_bits; | |
4948 | } | |
0d381245 | 4949 | |
c4093a6a JM |
4950 | struct captured_breakpoint_query_args |
4951 | { | |
4952 | int bnum; | |
4953 | }; | |
c5aa993b | 4954 | |
c4093a6a | 4955 | static int |
2b65245e | 4956 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4957 | { |
4958 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4959 | struct breakpoint *b; |
a6d9a66e | 4960 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4961 | |
c4093a6a JM |
4962 | ALL_BREAKPOINTS (b) |
4963 | { | |
4964 | if (args->bnum == b->number) | |
c5aa993b | 4965 | { |
12c5a436 | 4966 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 4967 | return GDB_RC_OK; |
c5aa993b | 4968 | } |
c4093a6a JM |
4969 | } |
4970 | return GDB_RC_NONE; | |
4971 | } | |
c5aa993b | 4972 | |
c4093a6a | 4973 | enum gdb_rc |
4a64f543 MS |
4974 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
4975 | char **error_message) | |
c4093a6a JM |
4976 | { |
4977 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 4978 | |
c4093a6a JM |
4979 | args.bnum = bnum; |
4980 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 4981 | an error. */ |
b0b13bb4 DJ |
4982 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4983 | error_message, RETURN_MASK_ALL) < 0) | |
4984 | return GDB_RC_FAIL; | |
4985 | else | |
4986 | return GDB_RC_OK; | |
c4093a6a | 4987 | } |
c5aa993b | 4988 | |
09d682a4 TT |
4989 | /* Return true if this breakpoint was set by the user, false if it is |
4990 | internal or momentary. */ | |
4991 | ||
4992 | int | |
4993 | user_breakpoint_p (struct breakpoint *b) | |
4994 | { | |
46c6471b | 4995 | return b->number > 0; |
09d682a4 TT |
4996 | } |
4997 | ||
7f3b0473 | 4998 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
4999 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5000 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5001 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5002 | ones for which it returns non-zero. Return the total number of | |
5003 | breakpoints listed. */ | |
c906108c | 5004 | |
d77f58be | 5005 | static int |
e5a67952 | 5006 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5007 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5008 | { |
52f0bd74 | 5009 | struct breakpoint *b; |
a6d9a66e | 5010 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5011 | int nr_printable_breakpoints; |
3b31d625 | 5012 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5013 | struct value_print_options opts; |
a6d9a66e | 5014 | int print_address_bits = 0; |
269b11a2 PA |
5015 | int print_type_col_width = 14; |
5016 | ||
79a45b7d TT |
5017 | get_user_print_options (&opts); |
5018 | ||
4a64f543 MS |
5019 | /* Compute the number of rows in the table, as well as the size |
5020 | required for address fields. */ | |
7f3b0473 AC |
5021 | nr_printable_breakpoints = 0; |
5022 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5023 | { |
5024 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5025 | if (filter && !filter (b)) | |
5026 | continue; | |
5027 | ||
5028 | /* If we have an "args" string, it is a list of breakpoints to | |
5029 | accept. Skip the others. */ | |
5030 | if (args != NULL && *args != '\0') | |
5031 | { | |
5032 | if (allflag && parse_and_eval_long (args) != b->number) | |
5033 | continue; | |
5034 | if (!allflag && !number_is_in_list (args, b->number)) | |
5035 | continue; | |
5036 | } | |
269b11a2 | 5037 | |
e5a67952 MS |
5038 | if (allflag || user_breakpoint_p (b)) |
5039 | { | |
5040 | int addr_bit, type_len; | |
a6d9a66e | 5041 | |
e5a67952 MS |
5042 | addr_bit = breakpoint_address_bits (b); |
5043 | if (addr_bit > print_address_bits) | |
5044 | print_address_bits = addr_bit; | |
269b11a2 | 5045 | |
e5a67952 MS |
5046 | type_len = strlen (bptype_string (b->type)); |
5047 | if (type_len > print_type_col_width) | |
5048 | print_type_col_width = type_len; | |
5049 | ||
5050 | nr_printable_breakpoints++; | |
5051 | } | |
5052 | } | |
7f3b0473 | 5053 | |
79a45b7d | 5054 | if (opts.addressprint) |
3b31d625 | 5055 | bkpttbl_chain |
3e43a32a MS |
5056 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5057 | nr_printable_breakpoints, | |
3b31d625 | 5058 | "BreakpointTable"); |
8b93c638 | 5059 | else |
3b31d625 | 5060 | bkpttbl_chain |
3e43a32a MS |
5061 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5062 | nr_printable_breakpoints, | |
3b31d625 | 5063 | "BreakpointTable"); |
8b93c638 | 5064 | |
7f3b0473 | 5065 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5066 | annotate_breakpoints_headers (); |
5067 | if (nr_printable_breakpoints > 0) | |
5068 | annotate_field (0); | |
4a64f543 | 5069 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5070 | if (nr_printable_breakpoints > 0) |
5071 | annotate_field (1); | |
269b11a2 | 5072 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5073 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5074 | if (nr_printable_breakpoints > 0) |
5075 | annotate_field (2); | |
4a64f543 | 5076 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5077 | if (nr_printable_breakpoints > 0) |
5078 | annotate_field (3); | |
54e52265 | 5079 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5080 | if (opts.addressprint) |
e5a67952 MS |
5081 | { |
5082 | if (nr_printable_breakpoints > 0) | |
5083 | annotate_field (4); | |
5084 | if (print_address_bits <= 32) | |
5085 | ui_out_table_header (uiout, 10, ui_left, | |
5086 | "addr", "Address"); /* 5 */ | |
5087 | else | |
5088 | ui_out_table_header (uiout, 18, ui_left, | |
5089 | "addr", "Address"); /* 5 */ | |
5090 | } | |
d7faa9e7 AC |
5091 | if (nr_printable_breakpoints > 0) |
5092 | annotate_field (5); | |
5093 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5094 | ui_out_table_body (uiout); | |
5095 | if (nr_printable_breakpoints > 0) | |
5096 | annotate_breakpoints_table (); | |
7f3b0473 | 5097 | |
c4093a6a | 5098 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5099 | { |
5100 | QUIT; | |
5101 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5102 | if (filter && !filter (b)) | |
5103 | continue; | |
5104 | ||
5105 | /* If we have an "args" string, it is a list of breakpoints to | |
5106 | accept. Skip the others. */ | |
5107 | ||
5108 | if (args != NULL && *args != '\0') | |
5109 | { | |
5110 | if (allflag) /* maintenance info breakpoint */ | |
5111 | { | |
5112 | if (parse_and_eval_long (args) != b->number) | |
5113 | continue; | |
5114 | } | |
5115 | else /* all others */ | |
5116 | { | |
5117 | if (!number_is_in_list (args, b->number)) | |
5118 | continue; | |
5119 | } | |
5120 | } | |
5121 | /* We only print out user settable breakpoints unless the | |
5122 | allflag is set. */ | |
5123 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5124 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5125 | } |
5126 | ||
3b31d625 | 5127 | do_cleanups (bkpttbl_chain); |
698384cd | 5128 | |
7f3b0473 | 5129 | if (nr_printable_breakpoints == 0) |
c906108c | 5130 | { |
4a64f543 MS |
5131 | /* If there's a filter, let the caller decide how to report |
5132 | empty list. */ | |
d77f58be SS |
5133 | if (!filter) |
5134 | { | |
e5a67952 | 5135 | if (args == NULL || *args == '\0') |
d77f58be SS |
5136 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5137 | else | |
4a64f543 | 5138 | ui_out_message (uiout, 0, |
e5a67952 MS |
5139 | "No breakpoint or watchpoint matching '%s'.\n", |
5140 | args); | |
d77f58be | 5141 | } |
c906108c SS |
5142 | } |
5143 | else | |
c4093a6a | 5144 | { |
a6d9a66e UW |
5145 | if (last_loc && !server_command) |
5146 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5147 | } |
c906108c | 5148 | |
4a64f543 | 5149 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5150 | there have been breakpoints? */ |
c906108c | 5151 | annotate_breakpoints_table_end (); |
d77f58be SS |
5152 | |
5153 | return nr_printable_breakpoints; | |
c906108c SS |
5154 | } |
5155 | ||
ad443146 SS |
5156 | /* Display the value of default-collect in a way that is generally |
5157 | compatible with the breakpoint list. */ | |
5158 | ||
5159 | static void | |
5160 | default_collect_info (void) | |
5161 | { | |
5162 | /* If it has no value (which is frequently the case), say nothing; a | |
5163 | message like "No default-collect." gets in user's face when it's | |
5164 | not wanted. */ | |
5165 | if (!*default_collect) | |
5166 | return; | |
5167 | ||
5168 | /* The following phrase lines up nicely with per-tracepoint collect | |
5169 | actions. */ | |
5170 | ui_out_text (uiout, "default collect "); | |
5171 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5172 | ui_out_text (uiout, " \n"); | |
5173 | } | |
5174 | ||
c906108c | 5175 | static void |
e5a67952 | 5176 | breakpoints_info (char *args, int from_tty) |
c906108c | 5177 | { |
e5a67952 | 5178 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5179 | |
5180 | default_collect_info (); | |
d77f58be SS |
5181 | } |
5182 | ||
5183 | static void | |
e5a67952 | 5184 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5185 | { |
e5a67952 | 5186 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
d77f58be SS |
5187 | |
5188 | if (num_printed == 0) | |
5189 | { | |
e5a67952 | 5190 | if (args == NULL || *args == '\0') |
d77f58be SS |
5191 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5192 | else | |
e5a67952 | 5193 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5194 | } |
c906108c SS |
5195 | } |
5196 | ||
7a292a7a | 5197 | static void |
e5a67952 | 5198 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5199 | { |
e5a67952 | 5200 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5201 | |
5202 | default_collect_info (); | |
c906108c SS |
5203 | } |
5204 | ||
0d381245 | 5205 | static int |
714835d5 | 5206 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5207 | struct program_space *pspace, |
714835d5 | 5208 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5209 | { |
5210 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5211 | |
0d381245 VP |
5212 | for (; bl; bl = bl->next) |
5213 | { | |
6c95b8df PA |
5214 | if (bl->pspace == pspace |
5215 | && bl->address == pc | |
0d381245 VP |
5216 | && (!overlay_debugging || bl->section == section)) |
5217 | return 1; | |
5218 | } | |
5219 | return 0; | |
5220 | } | |
5221 | ||
6c95b8df PA |
5222 | /* Print a message describing any breakpoints set at PC. This |
5223 | concerns with logical breakpoints, so we match program spaces, not | |
5224 | address spaces. */ | |
c906108c SS |
5225 | |
5226 | static void | |
6c95b8df PA |
5227 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5228 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5229 | struct obj_section *section, int thread) |
c906108c | 5230 | { |
52f0bd74 AC |
5231 | int others = 0; |
5232 | struct breakpoint *b; | |
c906108c SS |
5233 | |
5234 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5235 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5236 | if (others > 0) |
5237 | { | |
a3f17187 AC |
5238 | if (others == 1) |
5239 | printf_filtered (_("Note: breakpoint ")); | |
5240 | else /* if (others == ???) */ | |
5241 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5242 | ALL_BREAKPOINTS (b) |
6c95b8df | 5243 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5244 | { |
5245 | others--; | |
5246 | printf_filtered ("%d", b->number); | |
5247 | if (b->thread == -1 && thread != -1) | |
5248 | printf_filtered (" (all threads)"); | |
5249 | else if (b->thread != -1) | |
5250 | printf_filtered (" (thread %d)", b->thread); | |
5251 | printf_filtered ("%s%s ", | |
059fb39f | 5252 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5253 | || b->enable_state == bp_call_disabled |
5254 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5255 | ? " (disabled)" |
5256 | : b->enable_state == bp_permanent | |
5257 | ? " (permanent)" | |
5258 | : ""), | |
5259 | (others > 1) ? "," | |
5260 | : ((others == 1) ? " and" : "")); | |
5261 | } | |
a3f17187 | 5262 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5263 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5264 | printf_filtered (".\n"); |
5265 | } | |
5266 | } | |
5267 | \f | |
5268 | /* Set the default place to put a breakpoint | |
5269 | for the `break' command with no arguments. */ | |
5270 | ||
5271 | void | |
6c95b8df PA |
5272 | set_default_breakpoint (int valid, struct program_space *pspace, |
5273 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5274 | int line) |
c906108c SS |
5275 | { |
5276 | default_breakpoint_valid = valid; | |
6c95b8df | 5277 | default_breakpoint_pspace = pspace; |
c906108c SS |
5278 | default_breakpoint_address = addr; |
5279 | default_breakpoint_symtab = symtab; | |
5280 | default_breakpoint_line = line; | |
5281 | } | |
5282 | ||
e4f237da KB |
5283 | /* Return true iff it is meaningful to use the address member of |
5284 | BPT. For some breakpoint types, the address member is irrelevant | |
5285 | and it makes no sense to attempt to compare it to other addresses | |
5286 | (or use it for any other purpose either). | |
5287 | ||
4a64f543 MS |
5288 | More specifically, each of the following breakpoint types will |
5289 | always have a zero valued address and we don't want to mark | |
5290 | breakpoints of any of these types to be a duplicate of an actual | |
5291 | breakpoint at address zero: | |
e4f237da KB |
5292 | |
5293 | bp_watchpoint | |
2d134ed3 PA |
5294 | bp_catchpoint |
5295 | ||
5296 | */ | |
e4f237da KB |
5297 | |
5298 | static int | |
5299 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5300 | { | |
5301 | enum bptype type = bpt->type; | |
5302 | ||
2d134ed3 PA |
5303 | return (type != bp_watchpoint && type != bp_catchpoint); |
5304 | } | |
5305 | ||
5306 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5307 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5308 | ||
5309 | static int | |
4a64f543 MS |
5310 | watchpoint_locations_match (struct bp_location *loc1, |
5311 | struct bp_location *loc2) | |
2d134ed3 | 5312 | { |
3a5c3e22 PA |
5313 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
5314 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
5315 | ||
5316 | /* Both of them must exist. */ | |
5317 | gdb_assert (w1 != NULL); | |
5318 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 5319 | |
4a64f543 MS |
5320 | /* If the target can evaluate the condition expression in hardware, |
5321 | then we we need to insert both watchpoints even if they are at | |
5322 | the same place. Otherwise the watchpoint will only trigger when | |
5323 | the condition of whichever watchpoint was inserted evaluates to | |
5324 | true, not giving a chance for GDB to check the condition of the | |
5325 | other watchpoint. */ | |
3a5c3e22 | 5326 | if ((w1->cond_exp |
4a64f543 MS |
5327 | && target_can_accel_watchpoint_condition (loc1->address, |
5328 | loc1->length, | |
0cf6dd15 | 5329 | loc1->watchpoint_type, |
3a5c3e22 PA |
5330 | w1->cond_exp)) |
5331 | || (w2->cond_exp | |
4a64f543 MS |
5332 | && target_can_accel_watchpoint_condition (loc2->address, |
5333 | loc2->length, | |
0cf6dd15 | 5334 | loc2->watchpoint_type, |
3a5c3e22 | 5335 | w2->cond_exp))) |
0cf6dd15 TJB |
5336 | return 0; |
5337 | ||
85d721b8 PA |
5338 | /* Note that this checks the owner's type, not the location's. In |
5339 | case the target does not support read watchpoints, but does | |
5340 | support access watchpoints, we'll have bp_read_watchpoint | |
5341 | watchpoints with hw_access locations. Those should be considered | |
5342 | duplicates of hw_read locations. The hw_read locations will | |
5343 | become hw_access locations later. */ | |
2d134ed3 PA |
5344 | return (loc1->owner->type == loc2->owner->type |
5345 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5346 | && loc1->address == loc2->address | |
5347 | && loc1->length == loc2->length); | |
e4f237da KB |
5348 | } |
5349 | ||
6c95b8df PA |
5350 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5351 | same breakpoint location. In most targets, this can only be true | |
5352 | if ASPACE1 matches ASPACE2. On targets that have global | |
5353 | breakpoints, the address space doesn't really matter. */ | |
5354 | ||
5355 | static int | |
5356 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5357 | struct address_space *aspace2, CORE_ADDR addr2) | |
5358 | { | |
5359 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5360 | || aspace1 == aspace2) | |
5361 | && addr1 == addr2); | |
5362 | } | |
5363 | ||
f1310107 TJB |
5364 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5365 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5366 | matches ASPACE2. On targets that have global breakpoints, the address | |
5367 | space doesn't really matter. */ | |
5368 | ||
5369 | static int | |
5370 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5371 | int len1, struct address_space *aspace2, | |
5372 | CORE_ADDR addr2) | |
5373 | { | |
5374 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5375 | || aspace1 == aspace2) | |
5376 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5377 | } | |
5378 | ||
5379 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5380 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5381 | matches the breakpoint's address space. On targets that have global | |
5382 | breakpoints, the address space doesn't really matter. */ | |
5383 | ||
5384 | static int | |
5385 | breakpoint_location_address_match (struct bp_location *bl, | |
5386 | struct address_space *aspace, | |
5387 | CORE_ADDR addr) | |
5388 | { | |
5389 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5390 | aspace, addr) | |
5391 | || (bl->length | |
5392 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5393 | bl->address, bl->length, | |
5394 | aspace, addr))); | |
5395 | } | |
5396 | ||
2d134ed3 PA |
5397 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5398 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5399 | represent the same location. */ | |
5400 | ||
5401 | static int | |
4a64f543 MS |
5402 | breakpoint_locations_match (struct bp_location *loc1, |
5403 | struct bp_location *loc2) | |
2d134ed3 | 5404 | { |
2bdf28a0 JK |
5405 | int hw_point1, hw_point2; |
5406 | ||
5407 | /* Both of them must not be in moribund_locations. */ | |
5408 | gdb_assert (loc1->owner != NULL); | |
5409 | gdb_assert (loc2->owner != NULL); | |
5410 | ||
5411 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5412 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5413 | |
5414 | if (hw_point1 != hw_point2) | |
5415 | return 0; | |
5416 | else if (hw_point1) | |
5417 | return watchpoint_locations_match (loc1, loc2); | |
5418 | else | |
f1310107 TJB |
5419 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5420 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5421 | loc2->pspace->aspace, loc2->address) | |
5422 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5423 | } |
5424 | ||
76897487 KB |
5425 | static void |
5426 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5427 | int bnum, int have_bnum) | |
5428 | { | |
f63fbe86 MS |
5429 | /* The longest string possibly returned by hex_string_custom |
5430 | is 50 chars. These must be at least that big for safety. */ | |
5431 | char astr1[64]; | |
5432 | char astr2[64]; | |
76897487 | 5433 | |
bb599908 PH |
5434 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5435 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5436 | if (have_bnum) |
8a3fe4f8 | 5437 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5438 | bnum, astr1, astr2); |
5439 | else | |
8a3fe4f8 | 5440 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5441 | } |
5442 | ||
4a64f543 MS |
5443 | /* Adjust a breakpoint's address to account for architectural |
5444 | constraints on breakpoint placement. Return the adjusted address. | |
5445 | Note: Very few targets require this kind of adjustment. For most | |
5446 | targets, this function is simply the identity function. */ | |
76897487 KB |
5447 | |
5448 | static CORE_ADDR | |
a6d9a66e UW |
5449 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5450 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5451 | { |
a6d9a66e | 5452 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5453 | { |
5454 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5455 | return bpaddr; | |
5456 | } | |
88f7da05 KB |
5457 | else if (bptype == bp_watchpoint |
5458 | || bptype == bp_hardware_watchpoint | |
5459 | || bptype == bp_read_watchpoint | |
5460 | || bptype == bp_access_watchpoint | |
fe798b75 | 5461 | || bptype == bp_catchpoint) |
88f7da05 KB |
5462 | { |
5463 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5464 | have their addresses modified. */ | |
5465 | return bpaddr; | |
5466 | } | |
76897487 KB |
5467 | else |
5468 | { | |
5469 | CORE_ADDR adjusted_bpaddr; | |
5470 | ||
5471 | /* Some targets have architectural constraints on the placement | |
5472 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5473 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5474 | |
5475 | /* An adjusted breakpoint address can significantly alter | |
5476 | a user's expectations. Print a warning if an adjustment | |
5477 | is required. */ | |
5478 | if (adjusted_bpaddr != bpaddr) | |
5479 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5480 | ||
5481 | return adjusted_bpaddr; | |
5482 | } | |
5483 | } | |
5484 | ||
28010a5d PA |
5485 | void |
5486 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
5487 | struct breakpoint *owner) | |
7cc221ef | 5488 | { |
7cc221ef DJ |
5489 | memset (loc, 0, sizeof (*loc)); |
5490 | ||
348d480f PA |
5491 | gdb_assert (ops != NULL); |
5492 | ||
28010a5d PA |
5493 | loc->ops = ops; |
5494 | loc->owner = owner; | |
511a6cd4 | 5495 | loc->cond = NULL; |
0d381245 VP |
5496 | loc->shlib_disabled = 0; |
5497 | loc->enabled = 1; | |
e049a4b5 | 5498 | |
28010a5d | 5499 | switch (owner->type) |
e049a4b5 DJ |
5500 | { |
5501 | case bp_breakpoint: | |
5502 | case bp_until: | |
5503 | case bp_finish: | |
5504 | case bp_longjmp: | |
5505 | case bp_longjmp_resume: | |
186c406b TT |
5506 | case bp_exception: |
5507 | case bp_exception_resume: | |
e049a4b5 | 5508 | case bp_step_resume: |
2c03e5be | 5509 | case bp_hp_step_resume: |
e049a4b5 DJ |
5510 | case bp_watchpoint_scope: |
5511 | case bp_call_dummy: | |
aa7d318d | 5512 | case bp_std_terminate: |
e049a4b5 DJ |
5513 | case bp_shlib_event: |
5514 | case bp_thread_event: | |
5515 | case bp_overlay_event: | |
4efc6507 | 5516 | case bp_jit_event: |
0fd8e87f | 5517 | case bp_longjmp_master: |
aa7d318d | 5518 | case bp_std_terminate_master: |
186c406b | 5519 | case bp_exception_master: |
0e30163f JK |
5520 | case bp_gnu_ifunc_resolver: |
5521 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5522 | loc->loc_type = bp_loc_software_breakpoint; |
5523 | break; | |
5524 | case bp_hardware_breakpoint: | |
5525 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5526 | break; | |
5527 | case bp_hardware_watchpoint: | |
5528 | case bp_read_watchpoint: | |
5529 | case bp_access_watchpoint: | |
5530 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5531 | break; | |
5532 | case bp_watchpoint: | |
ce78b96d | 5533 | case bp_catchpoint: |
15c3d785 PA |
5534 | case bp_tracepoint: |
5535 | case bp_fast_tracepoint: | |
0fb4aa4b | 5536 | case bp_static_tracepoint: |
e049a4b5 DJ |
5537 | loc->loc_type = bp_loc_other; |
5538 | break; | |
5539 | default: | |
e2e0b3e5 | 5540 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5541 | } |
5542 | ||
f431efe5 | 5543 | loc->refc = 1; |
28010a5d PA |
5544 | } |
5545 | ||
5546 | /* Allocate a struct bp_location. */ | |
5547 | ||
5548 | static struct bp_location * | |
5549 | allocate_bp_location (struct breakpoint *bpt) | |
5550 | { | |
348d480f PA |
5551 | return bpt->ops->allocate_location (bpt); |
5552 | } | |
7cc221ef | 5553 | |
f431efe5 PA |
5554 | static void |
5555 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 5556 | { |
348d480f | 5557 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
5558 | xfree (loc); |
5559 | } | |
5560 | ||
f431efe5 PA |
5561 | /* Increment reference count. */ |
5562 | ||
5563 | static void | |
5564 | incref_bp_location (struct bp_location *bl) | |
5565 | { | |
5566 | ++bl->refc; | |
5567 | } | |
5568 | ||
5569 | /* Decrement reference count. If the reference count reaches 0, | |
5570 | destroy the bp_location. Sets *BLP to NULL. */ | |
5571 | ||
5572 | static void | |
5573 | decref_bp_location (struct bp_location **blp) | |
5574 | { | |
0807b50c PA |
5575 | gdb_assert ((*blp)->refc > 0); |
5576 | ||
f431efe5 PA |
5577 | if (--(*blp)->refc == 0) |
5578 | free_bp_location (*blp); | |
5579 | *blp = NULL; | |
5580 | } | |
5581 | ||
346774a9 | 5582 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 5583 | |
346774a9 PA |
5584 | static void |
5585 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 5586 | { |
346774a9 | 5587 | struct breakpoint *b1; |
c906108c | 5588 | |
346774a9 PA |
5589 | /* Add this breakpoint to the end of the chain so that a list of |
5590 | breakpoints will come out in order of increasing numbers. */ | |
5591 | ||
5592 | b1 = breakpoint_chain; | |
5593 | if (b1 == 0) | |
5594 | breakpoint_chain = b; | |
5595 | else | |
5596 | { | |
5597 | while (b1->next) | |
5598 | b1 = b1->next; | |
5599 | b1->next = b; | |
5600 | } | |
5601 | } | |
5602 | ||
5603 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
5604 | ||
5605 | static void | |
5606 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
5607 | struct gdbarch *gdbarch, | |
28010a5d | 5608 | enum bptype bptype, |
c0a91b2b | 5609 | const struct breakpoint_ops *ops) |
346774a9 | 5610 | { |
c906108c | 5611 | memset (b, 0, sizeof (*b)); |
2219d63c | 5612 | |
348d480f PA |
5613 | gdb_assert (ops != NULL); |
5614 | ||
28010a5d | 5615 | b->ops = ops; |
4d28f7a8 | 5616 | b->type = bptype; |
a6d9a66e | 5617 | b->gdbarch = gdbarch; |
c906108c SS |
5618 | b->language = current_language->la_language; |
5619 | b->input_radix = input_radix; | |
5620 | b->thread = -1; | |
b5de0fa7 | 5621 | b->enable_state = bp_enabled; |
c906108c SS |
5622 | b->next = 0; |
5623 | b->silent = 0; | |
5624 | b->ignore_count = 0; | |
5625 | b->commands = NULL; | |
818dd999 | 5626 | b->frame_id = null_frame_id; |
0d381245 | 5627 | b->condition_not_parsed = 0; |
84f4c1fe | 5628 | b->py_bp_object = NULL; |
d0fb5eae | 5629 | b->related_breakpoint = b; |
346774a9 PA |
5630 | } |
5631 | ||
5632 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
5633 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
5634 | |
5635 | static struct breakpoint * | |
5636 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 5637 | enum bptype bptype, |
c0a91b2b | 5638 | const struct breakpoint_ops *ops) |
346774a9 PA |
5639 | { |
5640 | struct breakpoint *b = XNEW (struct breakpoint); | |
5641 | ||
348d480f | 5642 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 5643 | add_to_breakpoint_chain (b); |
0d381245 VP |
5644 | return b; |
5645 | } | |
5646 | ||
0e30163f JK |
5647 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5648 | resolutions should be made as the user specified the location explicitly | |
5649 | enough. */ | |
5650 | ||
0d381245 | 5651 | static void |
0e30163f | 5652 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5653 | { |
2bdf28a0 JK |
5654 | gdb_assert (loc->owner != NULL); |
5655 | ||
0d381245 | 5656 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5657 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5658 | || is_tracepoint (loc->owner)) |
0d381245 | 5659 | { |
0e30163f JK |
5660 | int is_gnu_ifunc; |
5661 | ||
5662 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5663 | NULL, NULL, &is_gnu_ifunc); | |
5664 | ||
5665 | if (is_gnu_ifunc && !explicit_loc) | |
5666 | { | |
5667 | struct breakpoint *b = loc->owner; | |
5668 | ||
5669 | gdb_assert (loc->pspace == current_program_space); | |
5670 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5671 | &loc->requested_address)) | |
5672 | { | |
5673 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5674 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5675 | loc->requested_address, | |
5676 | b->type); | |
5677 | } | |
5678 | else if (b->type == bp_breakpoint && b->loc == loc | |
5679 | && loc->next == NULL && b->related_breakpoint == b) | |
5680 | { | |
5681 | /* Create only the whole new breakpoint of this type but do not | |
5682 | mess more complicated breakpoints with multiple locations. */ | |
5683 | b->type = bp_gnu_ifunc_resolver; | |
5684 | } | |
5685 | } | |
5686 | ||
0d381245 VP |
5687 | if (loc->function_name) |
5688 | loc->function_name = xstrdup (loc->function_name); | |
5689 | } | |
5690 | } | |
5691 | ||
a6d9a66e UW |
5692 | /* Attempt to determine architecture of location identified by SAL. */ |
5693 | static struct gdbarch * | |
5694 | get_sal_arch (struct symtab_and_line sal) | |
5695 | { | |
5696 | if (sal.section) | |
5697 | return get_objfile_arch (sal.section->objfile); | |
5698 | if (sal.symtab) | |
5699 | return get_objfile_arch (sal.symtab->objfile); | |
5700 | ||
5701 | return NULL; | |
5702 | } | |
5703 | ||
346774a9 PA |
5704 | /* Low level routine for partially initializing a breakpoint of type |
5705 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 5706 | file name, and line number are provided by SAL. |
0d381245 VP |
5707 | |
5708 | It is expected that the caller will complete the initialization of | |
5709 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 5710 | information regarding the creation of a new breakpoint. */ |
0d381245 | 5711 | |
346774a9 PA |
5712 | static void |
5713 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 5714 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5715 | const struct breakpoint_ops *ops) |
0d381245 | 5716 | { |
0d381245 | 5717 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5718 | struct gdbarch *loc_gdbarch; |
5719 | ||
28010a5d | 5720 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 5721 | |
a6d9a66e UW |
5722 | loc_gdbarch = get_sal_arch (sal); |
5723 | if (!loc_gdbarch) | |
5724 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5725 | |
6c95b8df PA |
5726 | if (bptype != bp_catchpoint) |
5727 | gdb_assert (sal.pspace != NULL); | |
5728 | ||
0d381245 VP |
5729 | /* Adjust the breakpoint's address prior to allocating a location. |
5730 | Once we call allocate_bp_location(), that mostly uninitialized | |
5731 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5732 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5733 | not want its scan of the location chain to find a breakpoint and |
5734 | location that's only been partially initialized. */ | |
4a64f543 MS |
5735 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5736 | sal.pc, b->type); | |
0d381245 | 5737 | |
39d61571 | 5738 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5739 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5740 | b->loc->requested_address = sal.pc; |
5741 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5742 | b->loc->pspace = sal.pspace; |
5743 | ||
5744 | /* Store the program space that was used to set the breakpoint, for | |
5745 | breakpoint resetting. */ | |
5746 | b->pspace = sal.pspace; | |
0d381245 VP |
5747 | |
5748 | if (sal.symtab == NULL) | |
5749 | b->source_file = NULL; | |
5750 | else | |
1b36a34b | 5751 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5752 | b->loc->section = sal.section; |
5753 | b->line_number = sal.line; | |
5754 | ||
0e30163f JK |
5755 | set_breakpoint_location_function (b->loc, |
5756 | sal.explicit_pc || sal.explicit_line); | |
c906108c | 5757 | |
c906108c | 5758 | breakpoints_changed (); |
346774a9 | 5759 | } |
c906108c | 5760 | |
346774a9 PA |
5761 | /* set_raw_breakpoint is a low level routine for allocating and |
5762 | partially initializing a breakpoint of type BPTYPE. The newly | |
5763 | created breakpoint's address, section, source file name, and line | |
5764 | number are provided by SAL. The newly created and partially | |
5765 | initialized breakpoint is added to the breakpoint chain and | |
5766 | is also returned as the value of this function. | |
5767 | ||
5768 | It is expected that the caller will complete the initialization of | |
5769 | the newly created breakpoint struct as well as output any status | |
5770 | information regarding the creation of a new breakpoint. In | |
5771 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5772 | number! Care should be taken to not allow an error to occur | |
5773 | prior to completing the initialization of the breakpoint. If this | |
5774 | should happen, a bogus breakpoint will be left on the chain. */ | |
5775 | ||
5776 | struct breakpoint * | |
5777 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 5778 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5779 | const struct breakpoint_ops *ops) |
346774a9 PA |
5780 | { |
5781 | struct breakpoint *b = XNEW (struct breakpoint); | |
5782 | ||
348d480f | 5783 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 5784 | add_to_breakpoint_chain (b); |
c906108c SS |
5785 | return b; |
5786 | } | |
5787 | ||
c2c6d25f JM |
5788 | |
5789 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5790 | instruction, hard-wired into the inferior's code. */ | |
5791 | void | |
5792 | make_breakpoint_permanent (struct breakpoint *b) | |
5793 | { | |
0d381245 | 5794 | struct bp_location *bl; |
cc59ec59 | 5795 | |
b5de0fa7 | 5796 | b->enable_state = bp_permanent; |
c2c6d25f | 5797 | |
4a64f543 MS |
5798 | /* By definition, permanent breakpoints are already present in the |
5799 | code. Mark all locations as inserted. For now, | |
5800 | make_breakpoint_permanent is called in just one place, so it's | |
5801 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 5802 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
5803 | for (bl = b->loc; bl; bl = bl->next) |
5804 | bl->inserted = 1; | |
c2c6d25f JM |
5805 | } |
5806 | ||
53a5351d | 5807 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5808 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5809 | initiated the operation. */ | |
c906108c SS |
5810 | |
5811 | void | |
186c406b | 5812 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5813 | { |
35df4500 | 5814 | struct breakpoint *b, *b_tmp; |
186c406b | 5815 | int thread = tp->num; |
0fd8e87f UW |
5816 | |
5817 | /* To avoid having to rescan all objfile symbols at every step, | |
5818 | we maintain a list of continually-inserted but always disabled | |
5819 | longjmp "master" breakpoints. Here, we simply create momentary | |
5820 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5821 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5822 | if (b->pspace == current_program_space |
186c406b TT |
5823 | && (b->type == bp_longjmp_master |
5824 | || b->type == bp_exception_master)) | |
0fd8e87f | 5825 | { |
06edf0c0 PA |
5826 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
5827 | struct breakpoint *clone; | |
cc59ec59 | 5828 | |
06edf0c0 PA |
5829 | clone = momentary_breakpoint_from_master (b, type, |
5830 | &momentary_breakpoint_ops); | |
0fd8e87f UW |
5831 | clone->thread = thread; |
5832 | } | |
186c406b TT |
5833 | |
5834 | tp->initiating_frame = frame; | |
c906108c SS |
5835 | } |
5836 | ||
611c83ae | 5837 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5838 | void |
611c83ae | 5839 | delete_longjmp_breakpoint (int thread) |
c906108c | 5840 | { |
35df4500 | 5841 | struct breakpoint *b, *b_tmp; |
c906108c | 5842 | |
35df4500 | 5843 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5844 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5845 | { |
5846 | if (b->thread == thread) | |
5847 | delete_breakpoint (b); | |
5848 | } | |
c906108c SS |
5849 | } |
5850 | ||
1900040c MS |
5851 | void |
5852 | enable_overlay_breakpoints (void) | |
5853 | { | |
52f0bd74 | 5854 | struct breakpoint *b; |
1900040c MS |
5855 | |
5856 | ALL_BREAKPOINTS (b) | |
5857 | if (b->type == bp_overlay_event) | |
5858 | { | |
5859 | b->enable_state = bp_enabled; | |
b60e7edf | 5860 | update_global_location_list (1); |
c02f5703 | 5861 | overlay_events_enabled = 1; |
1900040c MS |
5862 | } |
5863 | } | |
5864 | ||
5865 | void | |
5866 | disable_overlay_breakpoints (void) | |
5867 | { | |
52f0bd74 | 5868 | struct breakpoint *b; |
1900040c MS |
5869 | |
5870 | ALL_BREAKPOINTS (b) | |
5871 | if (b->type == bp_overlay_event) | |
5872 | { | |
5873 | b->enable_state = bp_disabled; | |
b60e7edf | 5874 | update_global_location_list (0); |
c02f5703 | 5875 | overlay_events_enabled = 0; |
1900040c MS |
5876 | } |
5877 | } | |
5878 | ||
aa7d318d TT |
5879 | /* Set an active std::terminate breakpoint for each std::terminate |
5880 | master breakpoint. */ | |
5881 | void | |
5882 | set_std_terminate_breakpoint (void) | |
5883 | { | |
35df4500 | 5884 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5885 | |
35df4500 | 5886 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5887 | if (b->pspace == current_program_space |
5888 | && b->type == bp_std_terminate_master) | |
5889 | { | |
06edf0c0 PA |
5890 | momentary_breakpoint_from_master (b, bp_std_terminate, |
5891 | &momentary_breakpoint_ops); | |
aa7d318d TT |
5892 | } |
5893 | } | |
5894 | ||
5895 | /* Delete all the std::terminate breakpoints. */ | |
5896 | void | |
5897 | delete_std_terminate_breakpoint (void) | |
5898 | { | |
35df4500 | 5899 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5900 | |
35df4500 | 5901 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5902 | if (b->type == bp_std_terminate) |
5903 | delete_breakpoint (b); | |
5904 | } | |
5905 | ||
c4093a6a | 5906 | struct breakpoint * |
a6d9a66e | 5907 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5908 | { |
5909 | struct breakpoint *b; | |
c4093a6a | 5910 | |
06edf0c0 PA |
5911 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
5912 | &internal_breakpoint_ops); | |
5913 | ||
b5de0fa7 | 5914 | b->enable_state = bp_enabled; |
c4093a6a | 5915 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5916 | b->addr_string |
5917 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5918 | |
b60e7edf | 5919 | update_global_location_list_nothrow (1); |
74960c60 | 5920 | |
c4093a6a JM |
5921 | return b; |
5922 | } | |
5923 | ||
5924 | void | |
5925 | remove_thread_event_breakpoints (void) | |
5926 | { | |
35df4500 | 5927 | struct breakpoint *b, *b_tmp; |
c4093a6a | 5928 | |
35df4500 | 5929 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5930 | if (b->type == bp_thread_event |
5931 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5932 | delete_breakpoint (b); |
5933 | } | |
5934 | ||
0101ce28 JJ |
5935 | struct lang_and_radix |
5936 | { | |
5937 | enum language lang; | |
5938 | int radix; | |
5939 | }; | |
5940 | ||
4efc6507 DE |
5941 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5942 | ||
5943 | struct breakpoint * | |
5944 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5945 | { | |
5946 | struct breakpoint *b; | |
5947 | ||
06edf0c0 PA |
5948 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
5949 | &internal_breakpoint_ops); | |
4efc6507 DE |
5950 | update_global_location_list_nothrow (1); |
5951 | return b; | |
5952 | } | |
0101ce28 | 5953 | |
03673fc7 PP |
5954 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
5955 | ||
5956 | void | |
5957 | remove_jit_event_breakpoints (void) | |
5958 | { | |
5959 | struct breakpoint *b, *b_tmp; | |
5960 | ||
5961 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5962 | if (b->type == bp_jit_event | |
5963 | && b->loc->pspace == current_program_space) | |
5964 | delete_breakpoint (b); | |
5965 | } | |
5966 | ||
cae688ec JJ |
5967 | void |
5968 | remove_solib_event_breakpoints (void) | |
5969 | { | |
35df4500 | 5970 | struct breakpoint *b, *b_tmp; |
cae688ec | 5971 | |
35df4500 | 5972 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5973 | if (b->type == bp_shlib_event |
5974 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5975 | delete_breakpoint (b); |
5976 | } | |
5977 | ||
5978 | struct breakpoint * | |
a6d9a66e | 5979 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5980 | { |
5981 | struct breakpoint *b; | |
5982 | ||
06edf0c0 PA |
5983 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
5984 | &internal_breakpoint_ops); | |
b60e7edf | 5985 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5986 | return b; |
5987 | } | |
5988 | ||
5989 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5990 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5991 | ||
5992 | void | |
cb851954 | 5993 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5994 | { |
876fa593 | 5995 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5996 | |
876fa593 | 5997 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5998 | { |
2bdf28a0 | 5999 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6000 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6001 | |
4a64f543 MS |
6002 | /* We apply the check to all breakpoints, including disabled for |
6003 | those with loc->duplicate set. This is so that when breakpoint | |
6004 | becomes enabled, or the duplicate is removed, gdb will try to | |
6005 | insert all breakpoints. If we don't set shlib_disabled here, | |
6006 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6007 | if (((b->type == bp_breakpoint) |
508ccb1f | 6008 | || (b->type == bp_jit_event) |
1042e4c0 | 6009 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6010 | || (is_tracepoint (b))) |
6c95b8df | 6011 | && loc->pspace == current_program_space |
0d381245 | 6012 | && !loc->shlib_disabled |
a77053c2 | 6013 | #ifdef PC_SOLIB |
0d381245 | 6014 | && PC_SOLIB (loc->address) |
a77053c2 | 6015 | #else |
6c95b8df | 6016 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6017 | #endif |
6018 | ) | |
0d381245 VP |
6019 | { |
6020 | loc->shlib_disabled = 1; | |
6021 | } | |
cae688ec JJ |
6022 | } |
6023 | } | |
6024 | ||
7a9dd1b2 | 6025 | /* Disable any breakpoints that are in an unloaded shared library. |
4a64f543 MS |
6026 | Only apply to enabled breakpoints, disabled ones can just stay |
6027 | disabled. */ | |
84acb35a | 6028 | |
75149521 | 6029 | static void |
84acb35a JJ |
6030 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6031 | { | |
876fa593 | 6032 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6033 | int disabled_shlib_breaks = 0; |
6034 | ||
c86cf029 VP |
6035 | /* SunOS a.out shared libraries are always mapped, so do not |
6036 | disable breakpoints; they will only be reported as unloaded | |
6037 | through clear_solib when GDB discards its shared library | |
6038 | list. See clear_solib for more information. */ | |
6039 | if (exec_bfd != NULL | |
6040 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6041 | return; | |
6042 | ||
876fa593 | 6043 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6044 | { |
2bdf28a0 | 6045 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6046 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6047 | |
0d381245 VP |
6048 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
6049 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 6050 | && solib->pspace == loc->pspace |
e2dd7057 | 6051 | && !loc->shlib_disabled |
508ccb1f TT |
6052 | && (b->type == bp_breakpoint |
6053 | || b->type == bp_jit_event | |
6054 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 6055 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6056 | { |
e2dd7057 PP |
6057 | loc->shlib_disabled = 1; |
6058 | /* At this point, we cannot rely on remove_breakpoint | |
6059 | succeeding so we must mark the breakpoint as not inserted | |
6060 | to prevent future errors occurring in remove_breakpoints. */ | |
6061 | loc->inserted = 0; | |
8d3788bd VP |
6062 | |
6063 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6064 | observer_notify_breakpoint_modified (b); | |
6065 | ||
e2dd7057 PP |
6066 | if (!disabled_shlib_breaks) |
6067 | { | |
6068 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6069 | warning (_("Temporarily disabling breakpoints " |
6070 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6071 | solib->so_name); |
84acb35a | 6072 | } |
e2dd7057 | 6073 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6074 | } |
6075 | } | |
84acb35a JJ |
6076 | } |
6077 | ||
ce78b96d JB |
6078 | /* FORK & VFORK catchpoints. */ |
6079 | ||
e29a4733 PA |
6080 | /* An instance of this type is used to represent a fork or vfork |
6081 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
6082 | class; users downcast to "struct breakpoint *" when needed. A | |
6083 | breakpoint is really of this type iff its ops pointer points to | |
6084 | CATCH_FORK_BREAKPOINT_OPS. */ | |
6085 | ||
6086 | struct fork_catchpoint | |
6087 | { | |
6088 | /* The base class. */ | |
6089 | struct breakpoint base; | |
6090 | ||
6091 | /* Process id of a child process whose forking triggered this | |
6092 | catchpoint. This field is only valid immediately after this | |
6093 | catchpoint has triggered. */ | |
6094 | ptid_t forked_inferior_pid; | |
6095 | }; | |
6096 | ||
4a64f543 MS |
6097 | /* Implement the "insert" breakpoint_ops method for fork |
6098 | catchpoints. */ | |
ce78b96d | 6099 | |
77b06cd7 TJB |
6100 | static int |
6101 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6102 | { |
77b06cd7 | 6103 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6104 | } |
6105 | ||
4a64f543 MS |
6106 | /* Implement the "remove" breakpoint_ops method for fork |
6107 | catchpoints. */ | |
ce78b96d JB |
6108 | |
6109 | static int | |
77b06cd7 | 6110 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6111 | { |
6112 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6113 | } | |
6114 | ||
6115 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6116 | catchpoints. */ | |
6117 | ||
6118 | static int | |
f1310107 TJB |
6119 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6120 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6121 | { |
e29a4733 PA |
6122 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6123 | ||
6124 | return inferior_has_forked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6125 | } |
6126 | ||
4a64f543 MS |
6127 | /* Implement the "print_it" breakpoint_ops method for fork |
6128 | catchpoints. */ | |
ce78b96d JB |
6129 | |
6130 | static enum print_stop_action | |
348d480f | 6131 | print_it_catch_fork (bpstat bs) |
ce78b96d | 6132 | { |
348d480f PA |
6133 | struct breakpoint *b = bs->breakpoint_at; |
6134 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 6135 | |
ce78b96d JB |
6136 | annotate_catchpoint (b->number); |
6137 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
e29a4733 | 6138 | b->number, ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6139 | return PRINT_SRC_AND_LOC; |
6140 | } | |
6141 | ||
4a64f543 MS |
6142 | /* Implement the "print_one" breakpoint_ops method for fork |
6143 | catchpoints. */ | |
ce78b96d JB |
6144 | |
6145 | static void | |
a6d9a66e | 6146 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6147 | { |
e29a4733 | 6148 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d TT |
6149 | struct value_print_options opts; |
6150 | ||
6151 | get_user_print_options (&opts); | |
6152 | ||
4a64f543 MS |
6153 | /* Field 4, the address, is omitted (which makes the columns not |
6154 | line up too nicely with the headers, but the effect is relatively | |
6155 | readable). */ | |
79a45b7d | 6156 | if (opts.addressprint) |
ce78b96d JB |
6157 | ui_out_field_skip (uiout, "addr"); |
6158 | annotate_field (5); | |
6159 | ui_out_text (uiout, "fork"); | |
e29a4733 | 6160 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6161 | { |
6162 | ui_out_text (uiout, ", process "); | |
6163 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6164 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6165 | ui_out_spaces (uiout, 1); |
6166 | } | |
6167 | } | |
6168 | ||
6169 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6170 | catchpoints. */ | |
6171 | ||
6172 | static void | |
6173 | print_mention_catch_fork (struct breakpoint *b) | |
6174 | { | |
6175 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6176 | } | |
6177 | ||
6149aea9 PA |
6178 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6179 | catchpoints. */ | |
6180 | ||
6181 | static void | |
6182 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6183 | { | |
6184 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 6185 | print_recreate_thread (b, fp); |
6149aea9 PA |
6186 | } |
6187 | ||
ce78b96d JB |
6188 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6189 | ||
2060206e | 6190 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 6191 | |
4a64f543 MS |
6192 | /* Implement the "insert" breakpoint_ops method for vfork |
6193 | catchpoints. */ | |
ce78b96d | 6194 | |
77b06cd7 TJB |
6195 | static int |
6196 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6197 | { |
77b06cd7 | 6198 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6199 | } |
6200 | ||
4a64f543 MS |
6201 | /* Implement the "remove" breakpoint_ops method for vfork |
6202 | catchpoints. */ | |
ce78b96d JB |
6203 | |
6204 | static int | |
77b06cd7 | 6205 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6206 | { |
6207 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6208 | } | |
6209 | ||
6210 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6211 | catchpoints. */ | |
6212 | ||
6213 | static int | |
f1310107 TJB |
6214 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6215 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6216 | { |
e29a4733 PA |
6217 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6218 | ||
6219 | return inferior_has_vforked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6220 | } |
6221 | ||
4a64f543 MS |
6222 | /* Implement the "print_it" breakpoint_ops method for vfork |
6223 | catchpoints. */ | |
ce78b96d JB |
6224 | |
6225 | static enum print_stop_action | |
348d480f | 6226 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 6227 | { |
348d480f | 6228 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
6229 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
6230 | ||
ce78b96d JB |
6231 | annotate_catchpoint (b->number); |
6232 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
e29a4733 | 6233 | b->number, ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6234 | return PRINT_SRC_AND_LOC; |
6235 | } | |
6236 | ||
4a64f543 MS |
6237 | /* Implement the "print_one" breakpoint_ops method for vfork |
6238 | catchpoints. */ | |
ce78b96d JB |
6239 | |
6240 | static void | |
a6d9a66e | 6241 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6242 | { |
e29a4733 | 6243 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d TT |
6244 | struct value_print_options opts; |
6245 | ||
6246 | get_user_print_options (&opts); | |
4a64f543 MS |
6247 | /* Field 4, the address, is omitted (which makes the columns not |
6248 | line up too nicely with the headers, but the effect is relatively | |
6249 | readable). */ | |
79a45b7d | 6250 | if (opts.addressprint) |
ce78b96d JB |
6251 | ui_out_field_skip (uiout, "addr"); |
6252 | annotate_field (5); | |
6253 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 6254 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6255 | { |
6256 | ui_out_text (uiout, ", process "); | |
6257 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6258 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6259 | ui_out_spaces (uiout, 1); |
6260 | } | |
6261 | } | |
6262 | ||
6263 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6264 | catchpoints. */ | |
6265 | ||
6266 | static void | |
6267 | print_mention_catch_vfork (struct breakpoint *b) | |
6268 | { | |
6269 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6270 | } | |
6271 | ||
6149aea9 PA |
6272 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6273 | catchpoints. */ | |
6274 | ||
6275 | static void | |
6276 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6277 | { | |
6278 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 6279 | print_recreate_thread (b, fp); |
6149aea9 PA |
6280 | } |
6281 | ||
ce78b96d JB |
6282 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6283 | ||
2060206e | 6284 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 6285 | |
be5c67c1 PA |
6286 | /* An instance of this type is used to represent a syscall catchpoint. |
6287 | It includes a "struct breakpoint" as a kind of base class; users | |
6288 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6289 | really of this type iff its ops pointer points to | |
6290 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
6291 | ||
6292 | struct syscall_catchpoint | |
6293 | { | |
6294 | /* The base class. */ | |
6295 | struct breakpoint base; | |
6296 | ||
6297 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
6298 | syscall has been specified for filtering, its value is NULL. | |
6299 | Otherwise, it holds a list of all syscalls to be caught. The | |
6300 | list elements are allocated with xmalloc. */ | |
6301 | VEC(int) *syscalls_to_be_caught; | |
6302 | }; | |
6303 | ||
6304 | /* Implement the "dtor" breakpoint_ops method for syscall | |
6305 | catchpoints. */ | |
6306 | ||
6307 | static void | |
6308 | dtor_catch_syscall (struct breakpoint *b) | |
6309 | { | |
6310 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
6311 | ||
6312 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 6313 | |
2060206e | 6314 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
6315 | } |
6316 | ||
a96d9b2e SDJ |
6317 | /* Implement the "insert" breakpoint_ops method for syscall |
6318 | catchpoints. */ | |
6319 | ||
77b06cd7 TJB |
6320 | static int |
6321 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 6322 | { |
be5c67c1 | 6323 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6324 | struct inferior *inf = current_inferior (); |
6325 | ||
6326 | ++inf->total_syscalls_count; | |
be5c67c1 | 6327 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6328 | ++inf->any_syscall_count; |
6329 | else | |
6330 | { | |
6331 | int i, iter; | |
cc59ec59 | 6332 | |
a96d9b2e | 6333 | for (i = 0; |
be5c67c1 | 6334 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6335 | i++) |
6336 | { | |
6337 | int elem; | |
cc59ec59 | 6338 | |
a96d9b2e SDJ |
6339 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6340 | { | |
6341 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6342 | uintptr_t vec_addr_offset |
6343 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6344 | uintptr_t vec_addr; |
6345 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6346 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6347 | vec_addr_offset; | |
6348 | memset ((void *) vec_addr, 0, | |
6349 | (iter + 1 - old_size) * sizeof (int)); | |
6350 | } | |
6351 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6352 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6353 | } | |
6354 | } | |
6355 | ||
77b06cd7 TJB |
6356 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6357 | inf->total_syscalls_count != 0, | |
6358 | inf->any_syscall_count, | |
6359 | VEC_length (int, inf->syscalls_counts), | |
6360 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6361 | } |
6362 | ||
6363 | /* Implement the "remove" breakpoint_ops method for syscall | |
6364 | catchpoints. */ | |
6365 | ||
6366 | static int | |
77b06cd7 | 6367 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 6368 | { |
be5c67c1 | 6369 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6370 | struct inferior *inf = current_inferior (); |
6371 | ||
6372 | --inf->total_syscalls_count; | |
be5c67c1 | 6373 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6374 | --inf->any_syscall_count; |
6375 | else | |
6376 | { | |
6377 | int i, iter; | |
cc59ec59 | 6378 | |
a96d9b2e | 6379 | for (i = 0; |
be5c67c1 | 6380 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6381 | i++) |
6382 | { | |
6383 | int elem; | |
6384 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6385 | /* Shouldn't happen. */ | |
6386 | continue; | |
6387 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6388 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6389 | } | |
6390 | } | |
6391 | ||
6392 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6393 | inf->total_syscalls_count != 0, | |
6394 | inf->any_syscall_count, | |
6395 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6396 | VEC_address (int, |
6397 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6398 | } |
6399 | ||
6400 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6401 | catchpoints. */ | |
6402 | ||
6403 | static int | |
f1310107 TJB |
6404 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6405 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6406 | { |
4a64f543 MS |
6407 | /* We must check if we are catching specific syscalls in this |
6408 | breakpoint. If we are, then we must guarantee that the called | |
6409 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6410 | int syscall_number = 0; |
be5c67c1 PA |
6411 | const struct syscall_catchpoint *c |
6412 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e SDJ |
6413 | |
6414 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6415 | return 0; | |
6416 | ||
6417 | /* Now, checking if the syscall is the same. */ | |
be5c67c1 | 6418 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6419 | { |
6420 | int i, iter; | |
cc59ec59 | 6421 | |
a96d9b2e | 6422 | for (i = 0; |
be5c67c1 | 6423 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6424 | i++) |
6425 | if (syscall_number == iter) | |
6426 | break; | |
6427 | /* Not the same. */ | |
6428 | if (!iter) | |
6429 | return 0; | |
6430 | } | |
6431 | ||
6432 | return 1; | |
6433 | } | |
6434 | ||
6435 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6436 | catchpoints. */ | |
6437 | ||
6438 | static enum print_stop_action | |
348d480f | 6439 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 6440 | { |
348d480f | 6441 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
6442 | /* These are needed because we want to know in which state a |
6443 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6444 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6445 | must print "called syscall" or "returned from syscall". */ | |
6446 | ptid_t ptid; | |
6447 | struct target_waitstatus last; | |
6448 | struct syscall s; | |
6449 | struct cleanup *old_chain; | |
6450 | char *syscall_id; | |
6451 | ||
6452 | get_last_target_status (&ptid, &last); | |
6453 | ||
6454 | get_syscall_by_number (last.value.syscall_number, &s); | |
6455 | ||
6456 | annotate_catchpoint (b->number); | |
6457 | ||
6458 | if (s.name == NULL) | |
6459 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6460 | else | |
6461 | syscall_id = xstrprintf ("'%s'", s.name); | |
6462 | ||
6463 | old_chain = make_cleanup (xfree, syscall_id); | |
6464 | ||
6465 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6466 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6467 | b->number, syscall_id); | |
6468 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6469 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6470 | b->number, syscall_id); | |
6471 | ||
6472 | do_cleanups (old_chain); | |
6473 | ||
6474 | return PRINT_SRC_AND_LOC; | |
6475 | } | |
6476 | ||
6477 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6478 | catchpoints. */ | |
6479 | ||
6480 | static void | |
6481 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6482 | struct bp_location **last_loc) |
a96d9b2e | 6483 | { |
be5c67c1 | 6484 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e SDJ |
6485 | struct value_print_options opts; |
6486 | ||
6487 | get_user_print_options (&opts); | |
4a64f543 MS |
6488 | /* Field 4, the address, is omitted (which makes the columns not |
6489 | line up too nicely with the headers, but the effect is relatively | |
6490 | readable). */ | |
a96d9b2e SDJ |
6491 | if (opts.addressprint) |
6492 | ui_out_field_skip (uiout, "addr"); | |
6493 | annotate_field (5); | |
6494 | ||
be5c67c1 PA |
6495 | if (c->syscalls_to_be_caught |
6496 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
6497 | ui_out_text (uiout, "syscalls \""); |
6498 | else | |
6499 | ui_out_text (uiout, "syscall \""); | |
6500 | ||
be5c67c1 | 6501 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6502 | { |
6503 | int i, iter; | |
6504 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6505 | |
a96d9b2e | 6506 | for (i = 0; |
be5c67c1 | 6507 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6508 | i++) |
6509 | { | |
6510 | char *x = text; | |
6511 | struct syscall s; | |
6512 | get_syscall_by_number (iter, &s); | |
6513 | ||
6514 | if (s.name != NULL) | |
6515 | text = xstrprintf ("%s%s, ", text, s.name); | |
6516 | else | |
6517 | text = xstrprintf ("%s%d, ", text, iter); | |
6518 | ||
6519 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 6520 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
6521 | on every call. */ |
6522 | xfree (x); | |
6523 | } | |
6524 | /* Remove the last comma. */ | |
6525 | text[strlen (text) - 2] = '\0'; | |
6526 | ui_out_field_string (uiout, "what", text); | |
6527 | } | |
6528 | else | |
6529 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6530 | ui_out_text (uiout, "\" "); | |
6531 | } | |
6532 | ||
6533 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6534 | catchpoints. */ | |
6535 | ||
6536 | static void | |
6537 | print_mention_catch_syscall (struct breakpoint *b) | |
6538 | { | |
be5c67c1 PA |
6539 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6540 | ||
6541 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
6542 | { |
6543 | int i, iter; | |
6544 | ||
be5c67c1 | 6545 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
6546 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
6547 | else | |
6548 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6549 | ||
6550 | for (i = 0; | |
be5c67c1 | 6551 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6552 | i++) |
6553 | { | |
6554 | struct syscall s; | |
6555 | get_syscall_by_number (iter, &s); | |
6556 | ||
6557 | if (s.name) | |
6558 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6559 | else | |
6560 | printf_filtered (" %d", s.number); | |
6561 | } | |
6562 | printf_filtered (")"); | |
6563 | } | |
6564 | else | |
6565 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6566 | b->number); | |
6567 | } | |
6568 | ||
6149aea9 PA |
6569 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6570 | catchpoints. */ | |
6571 | ||
6572 | static void | |
6573 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6574 | { | |
be5c67c1 PA |
6575 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6576 | ||
6149aea9 PA |
6577 | fprintf_unfiltered (fp, "catch syscall"); |
6578 | ||
be5c67c1 | 6579 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
6580 | { |
6581 | int i, iter; | |
6582 | ||
6583 | for (i = 0; | |
be5c67c1 | 6584 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
6585 | i++) |
6586 | { | |
6587 | struct syscall s; | |
6588 | ||
6589 | get_syscall_by_number (iter, &s); | |
6590 | if (s.name) | |
6591 | fprintf_unfiltered (fp, " %s", s.name); | |
6592 | else | |
6593 | fprintf_unfiltered (fp, " %d", s.number); | |
6594 | } | |
6595 | } | |
d9b3f62e | 6596 | print_recreate_thread (b, fp); |
6149aea9 PA |
6597 | } |
6598 | ||
a96d9b2e SDJ |
6599 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6600 | ||
2060206e | 6601 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
6602 | |
6603 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6604 | ||
6605 | static int | |
6606 | syscall_catchpoint_p (struct breakpoint *b) | |
6607 | { | |
6608 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6609 | } | |
6610 | ||
346774a9 PA |
6611 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
6612 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
6613 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
6614 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 6615 | |
346774a9 PA |
6616 | static void |
6617 | init_catchpoint (struct breakpoint *b, | |
6618 | struct gdbarch *gdbarch, int tempflag, | |
6619 | char *cond_string, | |
c0a91b2b | 6620 | const struct breakpoint_ops *ops) |
c906108c | 6621 | { |
c5aa993b | 6622 | struct symtab_and_line sal; |
346774a9 | 6623 | |
fe39c653 | 6624 | init_sal (&sal); |
6c95b8df | 6625 | sal.pspace = current_program_space; |
c5aa993b | 6626 | |
28010a5d | 6627 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 6628 | |
1b36a34b | 6629 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 6630 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
6631 | } |
6632 | ||
28010a5d | 6633 | void |
3a5c3e22 | 6634 | install_breakpoint (int internal, struct breakpoint *b) |
c56053d2 PA |
6635 | { |
6636 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
6637 | set_breakpoint_number (internal, b); |
6638 | if (!internal) | |
6639 | mention (b); | |
c56053d2 PA |
6640 | observer_notify_breakpoint_created (b); |
6641 | update_global_location_list (1); | |
6642 | } | |
6643 | ||
9b70b993 | 6644 | static void |
a6d9a66e UW |
6645 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6646 | int tempflag, char *cond_string, | |
c0a91b2b | 6647 | const struct breakpoint_ops *ops) |
c906108c | 6648 | { |
e29a4733 | 6649 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 6650 | |
e29a4733 PA |
6651 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
6652 | ||
6653 | c->forked_inferior_pid = null_ptid; | |
6654 | ||
3a5c3e22 | 6655 | install_breakpoint (0, &c->base); |
c906108c SS |
6656 | } |
6657 | ||
fe798b75 JB |
6658 | /* Exec catchpoints. */ |
6659 | ||
b4d90040 PA |
6660 | /* An instance of this type is used to represent an exec catchpoint. |
6661 | It includes a "struct breakpoint" as a kind of base class; users | |
6662 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6663 | really of this type iff its ops pointer points to | |
6664 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
6665 | ||
6666 | struct exec_catchpoint | |
6667 | { | |
6668 | /* The base class. */ | |
6669 | struct breakpoint base; | |
6670 | ||
6671 | /* Filename of a program whose exec triggered this catchpoint. | |
6672 | This field is only valid immediately after this catchpoint has | |
6673 | triggered. */ | |
6674 | char *exec_pathname; | |
6675 | }; | |
6676 | ||
6677 | /* Implement the "dtor" breakpoint_ops method for exec | |
6678 | catchpoints. */ | |
6679 | ||
6680 | static void | |
6681 | dtor_catch_exec (struct breakpoint *b) | |
6682 | { | |
6683 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
6684 | ||
6685 | xfree (c->exec_pathname); | |
348d480f | 6686 | |
2060206e | 6687 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
6688 | } |
6689 | ||
77b06cd7 TJB |
6690 | static int |
6691 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6692 | { |
77b06cd7 | 6693 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6694 | } |
c906108c | 6695 | |
fe798b75 | 6696 | static int |
77b06cd7 | 6697 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6698 | { |
6699 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6700 | } | |
c906108c | 6701 | |
fe798b75 | 6702 | static int |
f1310107 TJB |
6703 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6704 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6705 | { |
b4d90040 PA |
6706 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
6707 | ||
6708 | return inferior_has_execd (inferior_ptid, &c->exec_pathname); | |
fe798b75 | 6709 | } |
c906108c | 6710 | |
fe798b75 | 6711 | static enum print_stop_action |
348d480f | 6712 | print_it_catch_exec (bpstat bs) |
fe798b75 | 6713 | { |
348d480f | 6714 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
6715 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
6716 | ||
fe798b75 JB |
6717 | annotate_catchpoint (b->number); |
6718 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
b4d90040 | 6719 | c->exec_pathname); |
fe798b75 | 6720 | return PRINT_SRC_AND_LOC; |
c906108c SS |
6721 | } |
6722 | ||
fe798b75 | 6723 | static void |
a6d9a66e | 6724 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 6725 | { |
b4d90040 | 6726 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 JB |
6727 | struct value_print_options opts; |
6728 | ||
6729 | get_user_print_options (&opts); | |
6730 | ||
6731 | /* Field 4, the address, is omitted (which makes the columns | |
6732 | not line up too nicely with the headers, but the effect | |
6733 | is relatively readable). */ | |
6734 | if (opts.addressprint) | |
6735 | ui_out_field_skip (uiout, "addr"); | |
6736 | annotate_field (5); | |
6737 | ui_out_text (uiout, "exec"); | |
b4d90040 | 6738 | if (c->exec_pathname != NULL) |
fe798b75 JB |
6739 | { |
6740 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 6741 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
6742 | ui_out_text (uiout, "\" "); |
6743 | } | |
6744 | } | |
6745 | ||
6746 | static void | |
6747 | print_mention_catch_exec (struct breakpoint *b) | |
6748 | { | |
6749 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6750 | } | |
6751 | ||
6149aea9 PA |
6752 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6753 | catchpoints. */ | |
6754 | ||
6755 | static void | |
6756 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6757 | { | |
6758 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 6759 | print_recreate_thread (b, fp); |
6149aea9 PA |
6760 | } |
6761 | ||
2060206e | 6762 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 6763 | |
a96d9b2e SDJ |
6764 | static void |
6765 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 6766 | const struct breakpoint_ops *ops) |
a96d9b2e | 6767 | { |
be5c67c1 | 6768 | struct syscall_catchpoint *c; |
a96d9b2e | 6769 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 6770 | |
be5c67c1 PA |
6771 | c = XNEW (struct syscall_catchpoint); |
6772 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
6773 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 6774 | |
3a5c3e22 | 6775 | install_breakpoint (0, &c->base); |
a96d9b2e SDJ |
6776 | } |
6777 | ||
c906108c | 6778 | static int |
fba45db2 | 6779 | hw_breakpoint_used_count (void) |
c906108c | 6780 | { |
c906108c | 6781 | int i = 0; |
f1310107 TJB |
6782 | struct breakpoint *b; |
6783 | struct bp_location *bl; | |
c906108c SS |
6784 | |
6785 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6786 | { |
d6b74ac4 | 6787 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6788 | for (bl = b->loc; bl; bl = bl->next) |
6789 | { | |
6790 | /* Special types of hardware breakpoints may use more than | |
6791 | one register. */ | |
348d480f | 6792 | i += b->ops->resources_needed (bl); |
f1310107 | 6793 | } |
c5aa993b | 6794 | } |
c906108c SS |
6795 | |
6796 | return i; | |
6797 | } | |
6798 | ||
6799 | static int | |
fba45db2 | 6800 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6801 | { |
c906108c | 6802 | int i = 0; |
e09342b5 TJB |
6803 | struct breakpoint *b; |
6804 | struct bp_location *bl; | |
c906108c SS |
6805 | |
6806 | *other_type_used = 0; | |
6807 | ALL_BREAKPOINTS (b) | |
e09342b5 TJB |
6808 | { |
6809 | if (!breakpoint_enabled (b)) | |
6810 | continue; | |
6811 | ||
c5aa993b | 6812 | if (b->type == type) |
e09342b5 TJB |
6813 | for (bl = b->loc; bl; bl = bl->next) |
6814 | { | |
6815 | /* Special types of hardware watchpoints may use more than | |
6816 | one register. */ | |
348d480f | 6817 | i += b->ops->resources_needed (bl); |
e09342b5 | 6818 | } |
cc60f2e3 | 6819 | else if (is_hardware_watchpoint (b)) |
c5aa993b | 6820 | *other_type_used = 1; |
e09342b5 TJB |
6821 | } |
6822 | ||
c906108c SS |
6823 | return i; |
6824 | } | |
6825 | ||
c906108c | 6826 | void |
fba45db2 | 6827 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6828 | { |
c5aa993b | 6829 | struct breakpoint *b; |
c906108c SS |
6830 | |
6831 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6832 | { |
cc60f2e3 | 6833 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6834 | { |
b5de0fa7 | 6835 | b->enable_state = bp_call_disabled; |
b60e7edf | 6836 | update_global_location_list (0); |
c5aa993b JM |
6837 | } |
6838 | } | |
c906108c SS |
6839 | } |
6840 | ||
6841 | void | |
fba45db2 | 6842 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6843 | { |
c5aa993b | 6844 | struct breakpoint *b; |
c906108c SS |
6845 | |
6846 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6847 | { |
cc60f2e3 | 6848 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6849 | { |
b5de0fa7 | 6850 | b->enable_state = bp_enabled; |
b60e7edf | 6851 | update_global_location_list (1); |
c5aa993b JM |
6852 | } |
6853 | } | |
c906108c SS |
6854 | } |
6855 | ||
8bea4e01 UW |
6856 | void |
6857 | disable_breakpoints_before_startup (void) | |
6858 | { | |
6859 | struct breakpoint *b; | |
6860 | int found = 0; | |
6861 | ||
6862 | ALL_BREAKPOINTS (b) | |
6863 | { | |
6c95b8df PA |
6864 | if (b->pspace != current_program_space) |
6865 | continue; | |
6866 | ||
8bea4e01 UW |
6867 | if ((b->type == bp_breakpoint |
6868 | || b->type == bp_hardware_breakpoint) | |
6869 | && breakpoint_enabled (b)) | |
6870 | { | |
6871 | b->enable_state = bp_startup_disabled; | |
6872 | found = 1; | |
6873 | } | |
6874 | } | |
6875 | ||
6876 | if (found) | |
6877 | update_global_location_list (0); | |
6878 | ||
6c95b8df | 6879 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6880 | } |
6881 | ||
6882 | void | |
6883 | enable_breakpoints_after_startup (void) | |
6884 | { | |
6885 | struct breakpoint *b; | |
6886 | int found = 0; | |
6887 | ||
6c95b8df | 6888 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6889 | |
6890 | ALL_BREAKPOINTS (b) | |
6891 | { | |
6c95b8df PA |
6892 | if (b->pspace != current_program_space) |
6893 | continue; | |
6894 | ||
8bea4e01 UW |
6895 | if ((b->type == bp_breakpoint |
6896 | || b->type == bp_hardware_breakpoint) | |
6897 | && b->enable_state == bp_startup_disabled) | |
6898 | { | |
6899 | b->enable_state = bp_enabled; | |
6900 | found = 1; | |
6901 | } | |
6902 | } | |
6903 | ||
6904 | if (found) | |
6905 | breakpoint_re_set (); | |
6906 | } | |
6907 | ||
c906108c SS |
6908 | |
6909 | /* Set a breakpoint that will evaporate an end of command | |
6910 | at address specified by SAL. | |
6911 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6912 | ||
6913 | struct breakpoint * | |
a6d9a66e UW |
6914 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6915 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6916 | { |
52f0bd74 | 6917 | struct breakpoint *b; |
edb3359d DJ |
6918 | |
6919 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6920 | one. */ | |
6921 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6922 | ||
06edf0c0 | 6923 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
6924 | b->enable_state = bp_enabled; |
6925 | b->disposition = disp_donttouch; | |
818dd999 | 6926 | b->frame_id = frame_id; |
c906108c | 6927 | |
4a64f543 MS |
6928 | /* If we're debugging a multi-threaded program, then we want |
6929 | momentary breakpoints to be active in only a single thread of | |
6930 | control. */ | |
39f77062 KB |
6931 | if (in_thread_list (inferior_ptid)) |
6932 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6933 | |
b60e7edf | 6934 | update_global_location_list_nothrow (1); |
74960c60 | 6935 | |
c906108c SS |
6936 | return b; |
6937 | } | |
611c83ae | 6938 | |
06edf0c0 PA |
6939 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
6940 | The new breakpoint will have type TYPE, and use OPS as it | |
6941 | breakpoint_ops. */ | |
e58b0e63 | 6942 | |
06edf0c0 PA |
6943 | static struct breakpoint * |
6944 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
6945 | enum bptype type, | |
c0a91b2b | 6946 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
6947 | { |
6948 | struct breakpoint *copy; | |
6949 | ||
06edf0c0 | 6950 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 6951 | copy->loc = allocate_bp_location (copy); |
0e30163f | 6952 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 6953 | |
a6d9a66e | 6954 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6955 | copy->loc->requested_address = orig->loc->requested_address; |
6956 | copy->loc->address = orig->loc->address; | |
6957 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6958 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6959 | |
6960 | if (orig->source_file == NULL) | |
6961 | copy->source_file = NULL; | |
6962 | else | |
6963 | copy->source_file = xstrdup (orig->source_file); | |
6964 | ||
6965 | copy->line_number = orig->line_number; | |
6966 | copy->frame_id = orig->frame_id; | |
6967 | copy->thread = orig->thread; | |
6c95b8df | 6968 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6969 | |
6970 | copy->enable_state = bp_enabled; | |
6971 | copy->disposition = disp_donttouch; | |
6972 | copy->number = internal_breakpoint_number--; | |
6973 | ||
6974 | update_global_location_list_nothrow (0); | |
6975 | return copy; | |
6976 | } | |
6977 | ||
06edf0c0 PA |
6978 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6979 | ORIG is NULL. */ | |
6980 | ||
6981 | struct breakpoint * | |
6982 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6983 | { | |
6984 | /* If there's nothing to clone, then return nothing. */ | |
6985 | if (orig == NULL) | |
6986 | return NULL; | |
6987 | ||
6988 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
6989 | } | |
6990 | ||
611c83ae | 6991 | struct breakpoint * |
a6d9a66e UW |
6992 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6993 | enum bptype type) | |
611c83ae PA |
6994 | { |
6995 | struct symtab_and_line sal; | |
6996 | ||
6997 | sal = find_pc_line (pc, 0); | |
6998 | sal.pc = pc; | |
6999 | sal.section = find_pc_overlay (pc); | |
7000 | sal.explicit_pc = 1; | |
7001 | ||
a6d9a66e | 7002 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7003 | } |
c906108c | 7004 | \f |
c5aa993b | 7005 | |
c906108c SS |
7006 | /* Tell the user we have just set a breakpoint B. */ |
7007 | ||
7008 | static void | |
fba45db2 | 7009 | mention (struct breakpoint *b) |
c906108c | 7010 | { |
348d480f | 7011 | b->ops->print_mention (b); |
9dc5e2a9 | 7012 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7013 | return; |
c906108c SS |
7014 | printf_filtered ("\n"); |
7015 | } | |
c906108c | 7016 | \f |
c5aa993b | 7017 | |
0d381245 | 7018 | static struct bp_location * |
39d61571 | 7019 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7020 | const struct symtab_and_line *sal) |
7021 | { | |
7022 | struct bp_location *loc, **tmp; | |
7023 | ||
39d61571 | 7024 | loc = allocate_bp_location (b); |
0d381245 VP |
7025 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7026 | ; | |
7027 | *tmp = loc; | |
a6d9a66e UW |
7028 | loc->gdbarch = get_sal_arch (*sal); |
7029 | if (!loc->gdbarch) | |
7030 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7031 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7032 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7033 | loc->requested_address, b->type); | |
6c95b8df PA |
7034 | loc->pspace = sal->pspace; |
7035 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7036 | loc->section = sal->section; |
7037 | ||
0e30163f JK |
7038 | set_breakpoint_location_function (loc, |
7039 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7040 | return loc; |
7041 | } | |
514f746b AR |
7042 | \f |
7043 | ||
7044 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7045 | return 0 otherwise. */ | |
7046 | ||
7047 | static int | |
7048 | bp_loc_is_permanent (struct bp_location *loc) | |
7049 | { | |
7050 | int len; | |
7051 | CORE_ADDR addr; | |
7052 | const gdb_byte *brk; | |
7053 | gdb_byte *target_mem; | |
939c61fa JK |
7054 | struct cleanup *cleanup; |
7055 | int retval = 0; | |
514f746b AR |
7056 | |
7057 | gdb_assert (loc != NULL); | |
7058 | ||
7059 | addr = loc->address; | |
a6d9a66e | 7060 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7061 | |
939c61fa JK |
7062 | /* Software breakpoints unsupported? */ |
7063 | if (brk == NULL) | |
7064 | return 0; | |
7065 | ||
514f746b AR |
7066 | target_mem = alloca (len); |
7067 | ||
939c61fa JK |
7068 | /* Enable the automatic memory restoration from breakpoints while |
7069 | we read the memory. Otherwise we could say about our temporary | |
7070 | breakpoints they are permanent. */ | |
6c95b8df PA |
7071 | cleanup = save_current_space_and_thread (); |
7072 | ||
7073 | switch_to_program_space_and_thread (loc->pspace); | |
7074 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7075 | |
514f746b AR |
7076 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7077 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7078 | retval = 1; |
514f746b | 7079 | |
939c61fa JK |
7080 | do_cleanups (cleanup); |
7081 | ||
7082 | return retval; | |
514f746b AR |
7083 | } |
7084 | ||
7085 | ||
c3f6f71d | 7086 | |
018d34a4 VP |
7087 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7088 | as textual description of the location, and COND_STRING | |
db107f19 | 7089 | as condition expression. */ |
018d34a4 VP |
7090 | |
7091 | static void | |
d9b3f62e PA |
7092 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
7093 | struct symtabs_and_lines sals, char *addr_string, | |
7094 | char *cond_string, | |
7095 | enum bptype type, enum bpdisp disposition, | |
7096 | int thread, int task, int ignore_count, | |
c0a91b2b | 7097 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e | 7098 | int enabled, int internal, int display_canonical) |
018d34a4 | 7099 | { |
0d381245 | 7100 | int i; |
018d34a4 VP |
7101 | |
7102 | if (type == bp_hardware_breakpoint) | |
7103 | { | |
7104 | int i = hw_breakpoint_used_count (); | |
7105 | int target_resources_ok = | |
d92524f1 | 7106 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7107 | i + 1, 0); |
7108 | if (target_resources_ok == 0) | |
7109 | error (_("No hardware breakpoint support in the target.")); | |
7110 | else if (target_resources_ok < 0) | |
7111 | error (_("Hardware breakpoints used exceeds limit.")); | |
7112 | } | |
7113 | ||
6c95b8df PA |
7114 | gdb_assert (sals.nelts > 0); |
7115 | ||
0d381245 VP |
7116 | for (i = 0; i < sals.nelts; ++i) |
7117 | { | |
7118 | struct symtab_and_line sal = sals.sals[i]; | |
7119 | struct bp_location *loc; | |
7120 | ||
7121 | if (from_tty) | |
5af949e3 UW |
7122 | { |
7123 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7124 | if (!loc_gdbarch) | |
7125 | loc_gdbarch = gdbarch; | |
7126 | ||
7127 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7128 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7129 | } |
0d381245 VP |
7130 | |
7131 | if (i == 0) | |
7132 | { | |
d9b3f62e | 7133 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 7134 | b->thread = thread; |
4a306c9a | 7135 | b->task = task; |
018d34a4 | 7136 | |
0d381245 VP |
7137 | b->cond_string = cond_string; |
7138 | b->ignore_count = ignore_count; | |
41447f92 | 7139 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7140 | b->disposition = disposition; |
6c95b8df PA |
7141 | b->pspace = sals.sals[0].pspace; |
7142 | ||
0fb4aa4b PA |
7143 | if (type == bp_static_tracepoint) |
7144 | { | |
d9b3f62e | 7145 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
7146 | struct static_tracepoint_marker marker; |
7147 | ||
7148 | if (is_marker_spec (addr_string)) | |
7149 | { | |
7150 | /* We already know the marker exists, otherwise, we | |
7151 | wouldn't see a sal for it. */ | |
7152 | char *p = &addr_string[3]; | |
7153 | char *endp; | |
7154 | char *marker_str; | |
7155 | int i; | |
7156 | ||
e9cafbcc | 7157 | p = skip_spaces (p); |
0fb4aa4b | 7158 | |
e9cafbcc | 7159 | endp = skip_to_space (p); |
0fb4aa4b PA |
7160 | |
7161 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 7162 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 7163 | |
3e43a32a MS |
7164 | printf_filtered (_("Probed static tracepoint " |
7165 | "marker \"%s\"\n"), | |
d9b3f62e | 7166 | t->static_trace_marker_id); |
0fb4aa4b PA |
7167 | } |
7168 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7169 | { | |
d9b3f62e | 7170 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
7171 | release_static_tracepoint_marker (&marker); |
7172 | ||
3e43a32a MS |
7173 | printf_filtered (_("Probed static tracepoint " |
7174 | "marker \"%s\"\n"), | |
d9b3f62e | 7175 | t->static_trace_marker_id); |
0fb4aa4b PA |
7176 | } |
7177 | else | |
3e43a32a MS |
7178 | warning (_("Couldn't determine the static " |
7179 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7180 | } |
7181 | ||
6c95b8df | 7182 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7183 | && (b->type == bp_breakpoint |
7184 | || b->type == bp_hardware_breakpoint)) | |
7185 | b->enable_state = bp_startup_disabled; | |
7186 | ||
0d381245 VP |
7187 | loc = b->loc; |
7188 | } | |
7189 | else | |
018d34a4 | 7190 | { |
39d61571 | 7191 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7192 | } |
7193 | ||
514f746b AR |
7194 | if (bp_loc_is_permanent (loc)) |
7195 | make_breakpoint_permanent (b); | |
7196 | ||
0d381245 VP |
7197 | if (b->cond_string) |
7198 | { | |
7199 | char *arg = b->cond_string; | |
d32a6982 | 7200 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7201 | if (*arg) |
db107f19 | 7202 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7203 | } |
0d381245 | 7204 | } |
018d34a4 | 7205 | |
56435ebe | 7206 | b->display_canonical = display_canonical; |
018d34a4 VP |
7207 | if (addr_string) |
7208 | b->addr_string = addr_string; | |
7209 | else | |
7210 | /* addr_string has to be used or breakpoint_re_set will delete | |
7211 | me. */ | |
5af949e3 UW |
7212 | b->addr_string |
7213 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
d9b3f62e | 7214 | } |
018d34a4 | 7215 | |
d9b3f62e PA |
7216 | static void |
7217 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
7218 | struct symtabs_and_lines sals, char *addr_string, | |
7219 | char *cond_string, | |
7220 | enum bptype type, enum bpdisp disposition, | |
7221 | int thread, int task, int ignore_count, | |
c0a91b2b | 7222 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e PA |
7223 | int enabled, int internal, int display_canonical) |
7224 | { | |
7225 | struct breakpoint *b; | |
7226 | struct cleanup *old_chain; | |
7227 | ||
7228 | if (is_tracepoint_type (type)) | |
7229 | { | |
7230 | struct tracepoint *t; | |
7231 | ||
7232 | t = XCNEW (struct tracepoint); | |
7233 | b = &t->base; | |
7234 | } | |
7235 | else | |
7236 | b = XNEW (struct breakpoint); | |
7237 | ||
7238 | old_chain = make_cleanup (xfree, b); | |
7239 | ||
7240 | init_breakpoint_sal (b, gdbarch, | |
7241 | sals, addr_string, | |
7242 | cond_string, | |
7243 | type, disposition, | |
7244 | thread, task, ignore_count, | |
7245 | ops, from_tty, | |
7246 | enabled, internal, display_canonical); | |
7247 | discard_cleanups (old_chain); | |
7248 | ||
7249 | install_breakpoint (internal, b); | |
018d34a4 VP |
7250 | } |
7251 | ||
ed0616c6 VP |
7252 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7253 | elements to fill the void space. */ | |
2c0b251b PA |
7254 | static void |
7255 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7256 | { |
7257 | int i = index_to_remove+1; | |
7258 | int last_index = sal->nelts-1; | |
7259 | ||
7260 | for (;i <= last_index; ++i) | |
7261 | sal->sals[i-1] = sal->sals[i]; | |
7262 | ||
7263 | --(sal->nelts); | |
7264 | } | |
7265 | ||
6c95b8df PA |
7266 | /* If appropriate, obtains all sals that correspond to the same file |
7267 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7268 | will want to set a breakpoint at foo.c:line, and not really care | |
7269 | about program spaces. This is done only if SAL does not have | |
7270 | explicit PC and has line and file information. If we got just a | |
7271 | single expanded sal, return the original. | |
ed0616c6 | 7272 | |
6c95b8df PA |
7273 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7274 | which the name of enclosing function is different from SAL. This | |
7275 | makes sure that if we have breakpoint originally set in template | |
7276 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7277 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7278 | |
2c0b251b | 7279 | static struct symtabs_and_lines |
ed0616c6 VP |
7280 | expand_line_sal_maybe (struct symtab_and_line sal) |
7281 | { | |
7282 | struct symtabs_and_lines expanded; | |
7283 | CORE_ADDR original_pc = sal.pc; | |
7284 | char *original_function = NULL; | |
7285 | int found; | |
7286 | int i; | |
6c95b8df | 7287 | struct cleanup *old_chain; |
ed0616c6 VP |
7288 | |
7289 | /* If we have explicit pc, don't expand. | |
7290 | If we have no line number, we can't expand. */ | |
7291 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7292 | { | |
7293 | expanded.nelts = 1; | |
7294 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7295 | expanded.sals[0] = sal; | |
7296 | return expanded; | |
7297 | } | |
7298 | ||
7299 | sal.pc = 0; | |
6c95b8df PA |
7300 | |
7301 | old_chain = save_current_space_and_thread (); | |
7302 | ||
7303 | switch_to_program_space_and_thread (sal.pspace); | |
7304 | ||
ed0616c6 | 7305 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7306 | |
7307 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7308 | expanded = expand_line_sal (sal); |
6c95b8df | 7309 | |
ed0616c6 VP |
7310 | if (expanded.nelts == 1) |
7311 | { | |
3dba1c98 JB |
7312 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7313 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7314 | xfree (expanded.sals); |
7315 | expanded.nelts = 1; | |
7316 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7317 | sal.pc = original_pc; | |
7318 | expanded.sals[0] = sal; | |
3dba1c98 | 7319 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7320 | do_cleanups (old_chain); |
ed0616c6 VP |
7321 | return expanded; |
7322 | } | |
7323 | ||
7324 | if (!sal.explicit_line) | |
7325 | { | |
7326 | CORE_ADDR func_addr, func_end; | |
7327 | for (i = 0; i < expanded.nelts; ++i) | |
7328 | { | |
7329 | CORE_ADDR pc = expanded.sals[i].pc; | |
7330 | char *this_function; | |
6c95b8df PA |
7331 | |
7332 | /* We need to switch threads as well since we're about to | |
7333 | read memory. */ | |
7334 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7335 | ||
ed0616c6 VP |
7336 | if (find_pc_partial_function (pc, &this_function, |
7337 | &func_addr, &func_end)) | |
7338 | { | |
059fb39f PM |
7339 | if (this_function |
7340 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7341 | { |
7342 | remove_sal (&expanded, i); | |
7343 | --i; | |
7344 | } | |
ed0616c6 VP |
7345 | } |
7346 | } | |
7347 | } | |
059acae7 UW |
7348 | |
7349 | /* Skip the function prologue if necessary. */ | |
7350 | for (i = 0; i < expanded.nelts; ++i) | |
7351 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7352 | |
6c95b8df PA |
7353 | do_cleanups (old_chain); |
7354 | ||
ed0616c6 VP |
7355 | if (expanded.nelts <= 1) |
7356 | { | |
e5dd4106 | 7357 | /* This is an ugly workaround. If we get zero expanded sals |
4a64f543 MS |
7358 | then something is really wrong. Fix that by returning the |
7359 | original sal. */ | |
7360 | ||
ed0616c6 VP |
7361 | xfree (expanded.sals); |
7362 | expanded.nelts = 1; | |
7363 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7364 | sal.pc = original_pc; | |
7365 | expanded.sals[0] = sal; | |
7366 | return expanded; | |
7367 | } | |
7368 | ||
7369 | if (original_pc) | |
7370 | { | |
7371 | found = 0; | |
7372 | for (i = 0; i < expanded.nelts; ++i) | |
7373 | if (expanded.sals[i].pc == original_pc) | |
7374 | { | |
7375 | found = 1; | |
7376 | break; | |
7377 | } | |
7378 | gdb_assert (found); | |
7379 | } | |
7380 | ||
7381 | return expanded; | |
7382 | } | |
7383 | ||
018d34a4 VP |
7384 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7385 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7386 | value. COND_STRING, if not NULL, specified the condition to be | |
7387 | used for all breakpoints. Essentially the only case where | |
7388 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7389 | function. In that case, it's still not possible to specify | |
7390 | separate conditions for different overloaded functions, so | |
7391 | we take just a single condition string. | |
7392 | ||
c3f6f71d | 7393 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7394 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7395 | array contents). If the function fails (error() is called), the |
7396 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7397 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7398 | |
7399 | static void | |
8cdf0e15 | 7400 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 TT |
7401 | struct symtabs_and_lines sals, |
7402 | struct linespec_result *canonical, | |
8cdf0e15 VP |
7403 | char *cond_string, |
7404 | enum bptype type, enum bpdisp disposition, | |
7405 | int thread, int task, int ignore_count, | |
c0a91b2b | 7406 | const struct breakpoint_ops *ops, int from_tty, |
84f4c1fe | 7407 | int enabled, int internal) |
c906108c | 7408 | { |
018d34a4 | 7409 | int i; |
cc59ec59 | 7410 | |
018d34a4 | 7411 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7412 | { |
ed0616c6 VP |
7413 | struct symtabs_and_lines expanded = |
7414 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7415 | |
7efd8fc2 | 7416 | create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i], |
8cdf0e15 | 7417 | cond_string, type, disposition, |
84f4c1fe | 7418 | thread, task, ignore_count, ops, |
56435ebe TT |
7419 | from_tty, enabled, internal, |
7420 | canonical->special_display); | |
c3f6f71d | 7421 | } |
c3f6f71d | 7422 | } |
c906108c | 7423 | |
9998af43 | 7424 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7425 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7426 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7427 | address strings. ADDRESS points to the end of the SAL. |
7428 | ||
7429 | The array and the line spec strings are allocated on the heap, it is | |
7430 | the caller's responsibility to free them. */ | |
c906108c | 7431 | |
b9362cc7 | 7432 | static void |
c3f6f71d JM |
7433 | parse_breakpoint_sals (char **address, |
7434 | struct symtabs_and_lines *sals, | |
58438ac1 | 7435 | struct linespec_result *canonical) |
c3f6f71d JM |
7436 | { |
7437 | char *addr_start = *address; | |
cc59ec59 | 7438 | |
c3f6f71d | 7439 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7440 | breakpoint. */ |
c3f6f71d JM |
7441 | if ((*address) == NULL |
7442 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7443 | { |
7444 | if (default_breakpoint_valid) | |
7445 | { | |
c3f6f71d | 7446 | struct symtab_and_line sal; |
cc59ec59 | 7447 | |
4a64f543 | 7448 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7449 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7450 | xmalloc (sizeof (struct symtab_and_line)); |
7451 | sal.pc = default_breakpoint_address; | |
7452 | sal.line = default_breakpoint_line; | |
7453 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7454 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7455 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7456 | |
4a64f543 MS |
7457 | /* "break" without arguments is equivalent to "break *PC" |
7458 | where PC is the default_breakpoint_address. So make sure | |
7459 | to set sal.explicit_pc to prevent GDB from trying to | |
7460 | expand the list of sals to include all other instances | |
7461 | with the same symtab and line. */ | |
00903456 JK |
7462 | sal.explicit_pc = 1; |
7463 | ||
c3f6f71d JM |
7464 | sals->sals[0] = sal; |
7465 | sals->nelts = 1; | |
c906108c SS |
7466 | } |
7467 | else | |
8a3fe4f8 | 7468 | error (_("No default breakpoint address now.")); |
c906108c SS |
7469 | } |
7470 | else | |
7471 | { | |
c906108c | 7472 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7473 | current_source_symtab (which is decode_line_1's default). |
7474 | This should produce the results we want almost all of the | |
7475 | time while leaving default_breakpoint_* alone. | |
7476 | ||
1aeae86e AF |
7477 | ObjC: However, don't match an Objective-C method name which |
7478 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7479 | |
c214a6fd | 7480 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7481 | |
c906108c | 7482 | if (default_breakpoint_valid |
0378c332 | 7483 | && (!cursal.symtab |
1aeae86e AF |
7484 | || ((strchr ("+-", (*address)[0]) != NULL) |
7485 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7486 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
58438ac1 | 7487 | default_breakpoint_line, canonical); |
c906108c | 7488 | else |
0101ce28 | 7489 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
58438ac1 | 7490 | canonical); |
c906108c | 7491 | } |
4a64f543 | 7492 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7efd8fc2 | 7493 | if (sals->nelts > 0 && canonical->canonical == NULL) |
38a714bb | 7494 | canonical->canonical = xcalloc (sals->nelts, sizeof (char *)); |
c3f6f71d | 7495 | if (addr_start != (*address)) |
c906108c | 7496 | { |
c3f6f71d | 7497 | int i; |
cc59ec59 | 7498 | |
c3f6f71d | 7499 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7500 | { |
4a64f543 | 7501 | /* Add the string if not present. */ |
7efd8fc2 TT |
7502 | if (canonical->canonical[i] == NULL) |
7503 | canonical->canonical[i] = savestring (addr_start, | |
7504 | (*address) - addr_start); | |
c906108c SS |
7505 | } |
7506 | } | |
c3f6f71d | 7507 | } |
c906108c | 7508 | |
c906108c | 7509 | |
c3f6f71d | 7510 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7511 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7512 | |
b9362cc7 | 7513 | static void |
23e7acfb | 7514 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7515 | { |
7516 | int i; | |
cc59ec59 | 7517 | |
c3f6f71d | 7518 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7519 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7520 | } |
7521 | ||
7a697b8d SS |
7522 | /* Fast tracepoints may have restrictions on valid locations. For |
7523 | instance, a fast tracepoint using a jump instead of a trap will | |
7524 | likely have to overwrite more bytes than a trap would, and so can | |
7525 | only be placed where the instruction is longer than the jump, or a | |
7526 | multi-instruction sequence does not have a jump into the middle of | |
7527 | it, etc. */ | |
7528 | ||
7529 | static void | |
7530 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7531 | struct symtabs_and_lines *sals) | |
7532 | { | |
7533 | int i, rslt; | |
7534 | struct symtab_and_line *sal; | |
7535 | char *msg; | |
7536 | struct cleanup *old_chain; | |
7537 | ||
7538 | for (i = 0; i < sals->nelts; i++) | |
7539 | { | |
7540 | sal = &sals->sals[i]; | |
7541 | ||
7542 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7543 | NULL, &msg); | |
7544 | old_chain = make_cleanup (xfree, msg); | |
7545 | ||
7546 | if (!rslt) | |
7547 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7548 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7549 | ||
7550 | do_cleanups (old_chain); | |
7551 | } | |
7552 | } | |
7553 | ||
018d34a4 VP |
7554 | /* Given TOK, a string specification of condition and thread, as |
7555 | accepted by the 'break' command, extract the condition | |
7556 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7557 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7558 | If no condition is found, *COND_STRING is set to NULL. |
7559 | If no thread is found, *THREAD is set to -1. */ | |
7560 | static void | |
7561 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7562 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7563 | { |
7564 | *cond_string = NULL; | |
7565 | *thread = -1; | |
7566 | while (tok && *tok) | |
7567 | { | |
7568 | char *end_tok; | |
7569 | int toklen; | |
7570 | char *cond_start = NULL; | |
7571 | char *cond_end = NULL; | |
cc59ec59 | 7572 | |
e9cafbcc | 7573 | tok = skip_spaces (tok); |
018d34a4 | 7574 | |
e9cafbcc | 7575 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7576 | |
7577 | toklen = end_tok - tok; | |
7578 | ||
7579 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7580 | { | |
f7545552 TT |
7581 | struct expression *expr; |
7582 | ||
018d34a4 | 7583 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7584 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7585 | xfree (expr); | |
018d34a4 VP |
7586 | cond_end = tok; |
7587 | *cond_string = savestring (cond_start, | |
7588 | cond_end - cond_start); | |
7589 | } | |
7590 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7591 | { | |
7592 | char *tmptok; | |
7593 | ||
7594 | tok = end_tok + 1; | |
7595 | tmptok = tok; | |
7596 | *thread = strtol (tok, &tok, 0); | |
7597 | if (tok == tmptok) | |
7598 | error (_("Junk after thread keyword.")); | |
7599 | if (!valid_thread_id (*thread)) | |
7600 | error (_("Unknown thread %d."), *thread); | |
7601 | } | |
4a306c9a JB |
7602 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7603 | { | |
7604 | char *tmptok; | |
7605 | ||
7606 | tok = end_tok + 1; | |
7607 | tmptok = tok; | |
7608 | *task = strtol (tok, &tok, 0); | |
7609 | if (tok == tmptok) | |
7610 | error (_("Junk after task keyword.")); | |
7611 | if (!valid_task_id (*task)) | |
b6199126 | 7612 | error (_("Unknown task %d."), *task); |
4a306c9a | 7613 | } |
018d34a4 VP |
7614 | else |
7615 | error (_("Junk at end of arguments.")); | |
7616 | } | |
7617 | } | |
7618 | ||
0fb4aa4b PA |
7619 | /* Decode a static tracepoint marker spec. */ |
7620 | ||
7621 | static struct symtabs_and_lines | |
7622 | decode_static_tracepoint_spec (char **arg_p) | |
7623 | { | |
7624 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7625 | struct symtabs_and_lines sals; | |
7626 | struct symtab_and_line sal; | |
7627 | struct symbol *sym; | |
7628 | struct cleanup *old_chain; | |
7629 | char *p = &(*arg_p)[3]; | |
7630 | char *endp; | |
7631 | char *marker_str; | |
7632 | int i; | |
7633 | ||
e9cafbcc | 7634 | p = skip_spaces (p); |
0fb4aa4b | 7635 | |
e9cafbcc | 7636 | endp = skip_to_space (p); |
0fb4aa4b PA |
7637 | |
7638 | marker_str = savestring (p, endp - p); | |
7639 | old_chain = make_cleanup (xfree, marker_str); | |
7640 | ||
7641 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7642 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7643 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7644 | ||
7645 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7646 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7647 | ||
7648 | for (i = 0; i < sals.nelts; i++) | |
7649 | { | |
7650 | struct static_tracepoint_marker *marker; | |
7651 | ||
7652 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7653 | ||
7654 | init_sal (&sals.sals[i]); | |
7655 | ||
7656 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7657 | sals.sals[i].pc = marker->address; | |
7658 | ||
7659 | release_static_tracepoint_marker (marker); | |
7660 | } | |
7661 | ||
7662 | do_cleanups (old_chain); | |
7663 | ||
7664 | *arg_p = endp; | |
7665 | return sals; | |
7666 | } | |
7667 | ||
fd9b8c24 PA |
7668 | /* Set a breakpoint. This function is shared between CLI and MI |
7669 | functions for setting a breakpoint. This function has two major | |
7670 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7671 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7672 | breakpoint location, address and thread. Otherwise, ARG is just |
7673 | the location of breakpoint, with condition and thread specified by | |
7674 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7675 | the breakpoint number will be allocated from the internal | |
7676 | breakpoint count. Returns true if any breakpoint was created; | |
7677 | false otherwise. */ | |
0101ce28 | 7678 | |
8cdf0e15 VP |
7679 | int |
7680 | create_breakpoint (struct gdbarch *gdbarch, | |
7681 | char *arg, char *cond_string, int thread, | |
7682 | int parse_condition_and_thread, | |
0fb4aa4b | 7683 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7684 | int ignore_count, |
7685 | enum auto_boolean pending_break_support, | |
c0a91b2b | 7686 | const struct breakpoint_ops *ops, |
84f4c1fe | 7687 | int from_tty, int enabled, int internal) |
c3f6f71d | 7688 | { |
b78a6381 | 7689 | volatile struct gdb_exception e; |
c3f6f71d | 7690 | struct symtabs_and_lines sals; |
0101ce28 | 7691 | struct symtab_and_line pending_sal; |
0101ce28 | 7692 | char *copy_arg; |
c3f6f71d | 7693 | char *addr_start = arg; |
7efd8fc2 | 7694 | struct linespec_result canonical; |
c3f6f71d | 7695 | struct cleanup *old_chain; |
80c99de1 | 7696 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7697 | int i; |
0101ce28 | 7698 | int pending = 0; |
4a306c9a | 7699 | int task = 0; |
86b17b60 | 7700 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7701 | |
348d480f PA |
7702 | gdb_assert (ops != NULL); |
7703 | ||
c3f6f71d JM |
7704 | sals.sals = NULL; |
7705 | sals.nelts = 0; | |
7efd8fc2 | 7706 | init_linespec_result (&canonical); |
c3f6f71d | 7707 | |
0fb4aa4b PA |
7708 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7709 | { | |
7710 | int i; | |
7711 | ||
7712 | sals = decode_static_tracepoint_spec (&arg); | |
7713 | ||
7714 | copy_arg = savestring (addr_start, arg - addr_start); | |
38a714bb | 7715 | canonical.canonical = xcalloc (sals.nelts, sizeof (char *)); |
0fb4aa4b | 7716 | for (i = 0; i < sals.nelts; i++) |
7efd8fc2 | 7717 | canonical.canonical[i] = xstrdup (copy_arg); |
0fb4aa4b PA |
7718 | goto done; |
7719 | } | |
7720 | ||
b78a6381 TT |
7721 | TRY_CATCH (e, RETURN_MASK_ALL) |
7722 | { | |
58438ac1 | 7723 | parse_breakpoint_sals (&arg, &sals, &canonical); |
b78a6381 | 7724 | } |
0101ce28 JJ |
7725 | |
7726 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7727 | switch (e.reason) |
0101ce28 | 7728 | { |
05ff989b | 7729 | case RETURN_QUIT: |
98deb0da | 7730 | throw_exception (e); |
05ff989b AC |
7731 | case RETURN_ERROR: |
7732 | switch (e.error) | |
0101ce28 | 7733 | { |
05ff989b | 7734 | case NOT_FOUND_ERROR: |
0101ce28 | 7735 | |
05ff989b AC |
7736 | /* If pending breakpoint support is turned off, throw |
7737 | error. */ | |
fa8d40ab JJ |
7738 | |
7739 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7740 | throw_exception (e); |
7741 | ||
7742 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7743 | |
05ff989b AC |
7744 | /* If pending breakpoint support is auto query and the user |
7745 | selects no, then simply return the error code. */ | |
059fb39f | 7746 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7747 | && !nquery (_("Make breakpoint pending on " |
7748 | "future shared library load? "))) | |
fd9b8c24 | 7749 | return 0; |
fa8d40ab | 7750 | |
05ff989b AC |
7751 | /* At this point, either the user was queried about setting |
7752 | a pending breakpoint and selected yes, or pending | |
7753 | breakpoint behavior is on and thus a pending breakpoint | |
7754 | is defaulted on behalf of the user. */ | |
0101ce28 | 7755 | copy_arg = xstrdup (addr_start); |
7efd8fc2 | 7756 | canonical.canonical = ©_arg; |
0101ce28 JJ |
7757 | sals.nelts = 1; |
7758 | sals.sals = &pending_sal; | |
7759 | pending_sal.pc = 0; | |
7760 | pending = 1; | |
05ff989b AC |
7761 | break; |
7762 | default: | |
98deb0da | 7763 | throw_exception (e); |
0101ce28 | 7764 | } |
2abae994 | 7765 | break; |
05ff989b AC |
7766 | default: |
7767 | if (!sals.nelts) | |
fd9b8c24 | 7768 | return 0; |
0101ce28 | 7769 | } |
c3f6f71d | 7770 | |
0fb4aa4b PA |
7771 | done: |
7772 | ||
4a64f543 | 7773 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7774 | old_chain = make_cleanup (null_cleanup, 0); |
7775 | ||
0101ce28 JJ |
7776 | if (!pending) |
7777 | { | |
7778 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7779 | make_cleanup (xfree, sals.sals); | |
7780 | ||
7efd8fc2 TT |
7781 | /* Cleanup the canonical array but not its contents. */ |
7782 | make_cleanup (xfree, canonical.canonical); | |
0101ce28 | 7783 | } |
c3f6f71d | 7784 | |
c3f6f71d JM |
7785 | /* ----------------------------- SNIP ----------------------------- |
7786 | Anything added to the cleanup chain beyond this point is assumed | |
7787 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7788 | then the memory is not reclaimed. */ |
7789 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 7790 | |
7efd8fc2 | 7791 | /* Mark the contents of the canonical for cleanup. These go on |
80c99de1 | 7792 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7793 | for (i = 0; i < sals.nelts; i++) |
7794 | { | |
7efd8fc2 TT |
7795 | if (canonical.canonical[i] != NULL) |
7796 | make_cleanup (xfree, canonical.canonical[i]); | |
c3f6f71d JM |
7797 | } |
7798 | ||
7799 | /* Resolve all line numbers to PC's and verify that the addresses | |
7800 | are ok for the target. */ | |
0101ce28 | 7801 | if (!pending) |
23e7acfb | 7802 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7803 | |
7a697b8d SS |
7804 | /* Fast tracepoints may have additional restrictions on location. */ |
7805 | if (type_wanted == bp_fast_tracepoint) | |
7806 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7807 | ||
c3f6f71d JM |
7808 | /* Verify that condition can be parsed, before setting any |
7809 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7810 | breakpoint. */ |
0101ce28 | 7811 | if (!pending) |
c3f6f71d | 7812 | { |
2f069f6f | 7813 | if (parse_condition_and_thread) |
72b2ff0e VP |
7814 | { |
7815 | /* Here we only parse 'arg' to separate condition | |
7816 | from thread number, so parsing in context of first | |
7817 | sal is OK. When setting the breakpoint we'll | |
7818 | re-parse it in context of each sal. */ | |
7819 | cond_string = NULL; | |
7820 | thread = -1; | |
4a306c9a JB |
7821 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7822 | &thread, &task); | |
72b2ff0e VP |
7823 | if (cond_string) |
7824 | make_cleanup (xfree, cond_string); | |
7825 | } | |
2f069f6f | 7826 | else |
72b2ff0e VP |
7827 | { |
7828 | /* Create a private copy of condition string. */ | |
7829 | if (cond_string) | |
7830 | { | |
7831 | cond_string = xstrdup (cond_string); | |
7832 | make_cleanup (xfree, cond_string); | |
7833 | } | |
7834 | } | |
0fb4aa4b PA |
7835 | |
7836 | /* If the user is creating a static tracepoint by marker id | |
7837 | (strace -m MARKER_ID), then store the sals index, so that | |
7838 | breakpoint_re_set can try to match up which of the newly | |
7839 | found markers corresponds to this one, and, don't try to | |
7840 | expand multiple locations for each sal, given than SALS | |
7841 | already should contain all sals for MARKER_ID. */ | |
7842 | if (type_wanted == bp_static_tracepoint | |
7efd8fc2 | 7843 | && is_marker_spec (canonical.canonical[0])) |
0fb4aa4b PA |
7844 | { |
7845 | int i; | |
7846 | ||
7847 | for (i = 0; i < sals.nelts; ++i) | |
7848 | { | |
7849 | struct symtabs_and_lines expanded; | |
d9b3f62e | 7850 | struct tracepoint *tp; |
0fb4aa4b PA |
7851 | struct cleanup *old_chain; |
7852 | ||
7853 | expanded.nelts = 1; | |
7854 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7855 | expanded.sals[0] = sals.sals[i]; | |
7856 | old_chain = make_cleanup (xfree, expanded.sals); | |
7857 | ||
d9b3f62e PA |
7858 | tp = XCNEW (struct tracepoint); |
7859 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
7860 | canonical.canonical[i], | |
7861 | cond_string, type_wanted, | |
7862 | tempflag ? disp_del : disp_donttouch, | |
7863 | thread, task, ignore_count, ops, | |
7864 | from_tty, enabled, internal, | |
7865 | canonical.special_display); | |
0fb4aa4b PA |
7866 | /* Given that its possible to have multiple markers with |
7867 | the same string id, if the user is creating a static | |
7868 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7869 | store the sals index, so that breakpoint_re_set can | |
7870 | try to match up which of the newly found markers | |
7871 | corresponds to this one */ | |
7872 | tp->static_trace_marker_id_idx = i; | |
d9b3f62e PA |
7873 | |
7874 | install_breakpoint (internal, &tp->base); | |
7875 | ||
7876 | do_cleanups (old_chain); | |
0fb4aa4b PA |
7877 | } |
7878 | } | |
7879 | else | |
7efd8fc2 | 7880 | create_breakpoints_sal (gdbarch, sals, &canonical, cond_string, |
3e43a32a MS |
7881 | type_wanted, |
7882 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 7883 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 7884 | enabled, internal); |
c906108c | 7885 | } |
0101ce28 JJ |
7886 | else |
7887 | { | |
0101ce28 JJ |
7888 | struct breakpoint *b; |
7889 | ||
0101ce28 JJ |
7890 | make_cleanup (xfree, copy_arg); |
7891 | ||
348d480f | 7892 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted, ops); |
84f4c1fe | 7893 | set_breakpoint_number (internal, b); |
72b2ff0e | 7894 | b->thread = -1; |
7efd8fc2 | 7895 | b->addr_string = canonical.canonical[0]; |
72b2ff0e | 7896 | b->cond_string = NULL; |
0101ce28 | 7897 | b->ignore_count = ignore_count; |
0101ce28 | 7898 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7899 | b->condition_not_parsed = 1; |
41447f92 | 7900 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7901 | b->pspace = current_program_space; |
84f4c1fe | 7902 | b->py_bp_object = NULL; |
74960c60 | 7903 | |
6c95b8df | 7904 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7905 | && (b->type == bp_breakpoint |
7906 | || b->type == bp_hardware_breakpoint)) | |
7907 | b->enable_state = bp_startup_disabled; | |
7908 | ||
8d3788bd | 7909 | if (!internal) |
84f4c1fe PM |
7910 | /* Do not mention breakpoints with a negative number, |
7911 | but do notify observers. */ | |
8d3788bd VP |
7912 | mention (b); |
7913 | observer_notify_breakpoint_created (b); | |
0101ce28 JJ |
7914 | } |
7915 | ||
c3f6f71d | 7916 | if (sals.nelts > 1) |
95a42b64 | 7917 | { |
3e43a32a MS |
7918 | warning (_("Multiple breakpoints were set.\nUse the " |
7919 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7920 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7921 | } |
7922 | ||
80c99de1 PA |
7923 | /* That's it. Discard the cleanups for data inserted into the |
7924 | breakpoint. */ | |
7925 | discard_cleanups (bkpt_chain); | |
7926 | /* But cleanup everything else. */ | |
c3f6f71d | 7927 | do_cleanups (old_chain); |
217dc9e2 | 7928 | |
80c99de1 | 7929 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7930 | update_global_location_list (1); |
fd9b8c24 PA |
7931 | |
7932 | return 1; | |
c3f6f71d | 7933 | } |
c906108c | 7934 | |
348d480f | 7935 | /* Set a breakpoint. |
72b2ff0e VP |
7936 | ARG is a string describing breakpoint address, |
7937 | condition, and thread. | |
7938 | FLAG specifies if a breakpoint is hardware on, | |
7939 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7940 | and BP_TEMPFLAG. */ | |
348d480f | 7941 | |
98deb0da | 7942 | static void |
72b2ff0e | 7943 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7944 | { |
72b2ff0e | 7945 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7946 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7947 | ? bp_hardware_breakpoint | |
7948 | : bp_breakpoint); | |
c3f6f71d | 7949 | |
8cdf0e15 VP |
7950 | create_breakpoint (get_current_arch (), |
7951 | arg, | |
7952 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7953 | tempflag, type_wanted, |
8cdf0e15 VP |
7954 | 0 /* Ignore count */, |
7955 | pending_break_support, | |
348d480f | 7956 | &bkpt_breakpoint_ops, |
8cdf0e15 | 7957 | from_tty, |
84f4c1fe PM |
7958 | 1 /* enabled */, |
7959 | 0 /* internal */); | |
c906108c SS |
7960 | } |
7961 | ||
c906108c SS |
7962 | /* Helper function for break_command_1 and disassemble_command. */ |
7963 | ||
7964 | void | |
fba45db2 | 7965 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7966 | { |
7967 | CORE_ADDR pc; | |
7968 | ||
7969 | if (sal->pc == 0 && sal->symtab != NULL) | |
7970 | { | |
7971 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7972 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7973 | sal->line, sal->symtab->filename); |
7974 | sal->pc = pc; | |
6a048695 | 7975 | |
4a64f543 MS |
7976 | /* If this SAL corresponds to a breakpoint inserted using a line |
7977 | number, then skip the function prologue if necessary. */ | |
6a048695 | 7978 | if (sal->explicit_line) |
059acae7 | 7979 | skip_prologue_sal (sal); |
c906108c SS |
7980 | } |
7981 | ||
7982 | if (sal->section == 0 && sal->symtab != NULL) | |
7983 | { | |
7984 | struct blockvector *bv; | |
c5aa993b JM |
7985 | struct block *b; |
7986 | struct symbol *sym; | |
c906108c | 7987 | |
801e3a5b | 7988 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7989 | if (bv != NULL) |
7990 | { | |
7f0df278 | 7991 | sym = block_linkage_function (b); |
c906108c SS |
7992 | if (sym != NULL) |
7993 | { | |
7994 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7995 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7996 | } |
7997 | else | |
7998 | { | |
4a64f543 MS |
7999 | /* It really is worthwhile to have the section, so we'll |
8000 | just have to look harder. This case can be executed | |
8001 | if we have line numbers but no functions (as can | |
8002 | happen in assembly source). */ | |
c906108c | 8003 | |
c5aa993b | 8004 | struct minimal_symbol *msym; |
6c95b8df PA |
8005 | struct cleanup *old_chain = save_current_space_and_thread (); |
8006 | ||
8007 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8008 | |
8009 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8010 | if (msym) | |
714835d5 | 8011 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8012 | |
8013 | do_cleanups (old_chain); | |
c906108c SS |
8014 | } |
8015 | } | |
8016 | } | |
8017 | } | |
8018 | ||
8019 | void | |
fba45db2 | 8020 | break_command (char *arg, int from_tty) |
c906108c | 8021 | { |
db107f19 | 8022 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8023 | } |
8024 | ||
c906108c | 8025 | void |
fba45db2 | 8026 | tbreak_command (char *arg, int from_tty) |
c906108c | 8027 | { |
db107f19 | 8028 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8029 | } |
8030 | ||
c906108c | 8031 | static void |
fba45db2 | 8032 | hbreak_command (char *arg, int from_tty) |
c906108c | 8033 | { |
db107f19 | 8034 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8035 | } |
8036 | ||
8037 | static void | |
fba45db2 | 8038 | thbreak_command (char *arg, int from_tty) |
c906108c | 8039 | { |
db107f19 | 8040 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8041 | } |
8042 | ||
8043 | static void | |
fba45db2 | 8044 | stop_command (char *arg, int from_tty) |
c906108c | 8045 | { |
a3f17187 | 8046 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8047 | Usage: stop in <function | address>\n\ |
a3f17187 | 8048 | stop at <line>\n")); |
c906108c SS |
8049 | } |
8050 | ||
8051 | static void | |
fba45db2 | 8052 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8053 | { |
8054 | int badInput = 0; | |
8055 | ||
c5aa993b | 8056 | if (arg == (char *) NULL) |
c906108c SS |
8057 | badInput = 1; |
8058 | else if (*arg != '*') | |
8059 | { | |
8060 | char *argptr = arg; | |
8061 | int hasColon = 0; | |
8062 | ||
4a64f543 | 8063 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8064 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8065 | function/method name. */ |
c906108c | 8066 | while (*argptr && !hasColon) |
c5aa993b JM |
8067 | { |
8068 | hasColon = (*argptr == ':'); | |
8069 | argptr++; | |
8070 | } | |
c906108c SS |
8071 | |
8072 | if (hasColon) | |
c5aa993b | 8073 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8074 | else |
c5aa993b | 8075 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8076 | } |
8077 | ||
8078 | if (badInput) | |
a3f17187 | 8079 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8080 | else |
db107f19 | 8081 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8082 | } |
8083 | ||
8084 | static void | |
fba45db2 | 8085 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8086 | { |
8087 | int badInput = 0; | |
8088 | ||
c5aa993b | 8089 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8090 | badInput = 1; |
8091 | else | |
8092 | { | |
8093 | char *argptr = arg; | |
8094 | int hasColon = 0; | |
8095 | ||
4a64f543 MS |
8096 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8097 | it is probably a line number. */ | |
c906108c | 8098 | while (*argptr && !hasColon) |
c5aa993b JM |
8099 | { |
8100 | hasColon = (*argptr == ':'); | |
8101 | argptr++; | |
8102 | } | |
c906108c SS |
8103 | |
8104 | if (hasColon) | |
c5aa993b | 8105 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8106 | else |
c5aa993b | 8107 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8108 | } |
8109 | ||
8110 | if (badInput) | |
a3f17187 | 8111 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8112 | else |
db107f19 | 8113 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8114 | } |
8115 | ||
f1310107 TJB |
8116 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
8117 | ranged breakpoints. */ | |
8118 | ||
8119 | static int | |
8120 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
8121 | struct address_space *aspace, | |
8122 | CORE_ADDR bp_addr) | |
8123 | { | |
8124 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, | |
8125 | bl->length, aspace, bp_addr); | |
8126 | } | |
8127 | ||
8128 | /* Implement the "resources_needed" breakpoint_ops method for | |
8129 | ranged breakpoints. */ | |
8130 | ||
8131 | static int | |
8132 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
8133 | { | |
8134 | return target_ranged_break_num_registers (); | |
8135 | } | |
8136 | ||
8137 | /* Implement the "print_it" breakpoint_ops method for | |
8138 | ranged breakpoints. */ | |
8139 | ||
8140 | static enum print_stop_action | |
348d480f | 8141 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 8142 | { |
348d480f | 8143 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 TJB |
8144 | struct bp_location *bl = b->loc; |
8145 | ||
8146 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8147 | ||
8148 | /* Ranged breakpoints have only one location. */ | |
8149 | gdb_assert (bl && bl->next == NULL); | |
8150 | ||
8151 | annotate_breakpoint (b->number); | |
8152 | if (b->disposition == disp_del) | |
8153 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
8154 | else | |
8155 | ui_out_text (uiout, "\nRanged breakpoint "); | |
8156 | if (ui_out_is_mi_like_p (uiout)) | |
8157 | { | |
8158 | ui_out_field_string (uiout, "reason", | |
8159 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8160 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8161 | } | |
8162 | ui_out_field_int (uiout, "bkptno", b->number); | |
8163 | ui_out_text (uiout, ", "); | |
8164 | ||
8165 | return PRINT_SRC_AND_LOC; | |
8166 | } | |
8167 | ||
8168 | /* Implement the "print_one" breakpoint_ops method for | |
8169 | ranged breakpoints. */ | |
8170 | ||
8171 | static void | |
8172 | print_one_ranged_breakpoint (struct breakpoint *b, | |
8173 | struct bp_location **last_loc) | |
8174 | { | |
8175 | struct bp_location *bl = b->loc; | |
8176 | struct value_print_options opts; | |
8177 | ||
8178 | /* Ranged breakpoints have only one location. */ | |
8179 | gdb_assert (bl && bl->next == NULL); | |
8180 | ||
8181 | get_user_print_options (&opts); | |
8182 | ||
8183 | if (opts.addressprint) | |
8184 | /* We don't print the address range here, it will be printed later | |
8185 | by print_one_detail_ranged_breakpoint. */ | |
8186 | ui_out_field_skip (uiout, "addr"); | |
8187 | annotate_field (5); | |
8188 | print_breakpoint_location (b, bl); | |
8189 | *last_loc = bl; | |
8190 | } | |
8191 | ||
8192 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8193 | ranged breakpoints. */ | |
8194 | ||
8195 | static void | |
8196 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
8197 | struct ui_out *uiout) | |
8198 | { | |
8199 | CORE_ADDR address_start, address_end; | |
8200 | struct bp_location *bl = b->loc; | |
8201 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
8202 | struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb); | |
8203 | ||
8204 | gdb_assert (bl); | |
8205 | ||
8206 | address_start = bl->address; | |
8207 | address_end = address_start + bl->length - 1; | |
8208 | ||
8209 | ui_out_text (uiout, "\taddress range: "); | |
8210 | fprintf_unfiltered (stb->stream, "[%s, %s]", | |
8211 | print_core_address (bl->gdbarch, address_start), | |
8212 | print_core_address (bl->gdbarch, address_end)); | |
8213 | ui_out_field_stream (uiout, "addr", stb); | |
8214 | ui_out_text (uiout, "\n"); | |
8215 | ||
8216 | do_cleanups (cleanup); | |
8217 | } | |
8218 | ||
8219 | /* Implement the "print_mention" breakpoint_ops method for | |
8220 | ranged breakpoints. */ | |
8221 | ||
8222 | static void | |
8223 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
8224 | { | |
8225 | struct bp_location *bl = b->loc; | |
8226 | ||
8227 | gdb_assert (bl); | |
8228 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8229 | ||
8230 | if (ui_out_is_mi_like_p (uiout)) | |
8231 | return; | |
8232 | ||
8233 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
8234 | b->number, paddress (bl->gdbarch, bl->address), | |
8235 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
8236 | } | |
8237 | ||
8238 | /* Implement the "print_recreate" breakpoint_ops method for | |
8239 | ranged breakpoints. */ | |
8240 | ||
8241 | static void | |
8242 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
8243 | { | |
8244 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
8245 | b->addr_string_range_end); | |
d9b3f62e | 8246 | print_recreate_thread (b, fp); |
f1310107 TJB |
8247 | } |
8248 | ||
8249 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
8250 | ||
2060206e | 8251 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
8252 | |
8253 | /* Find the address where the end of the breakpoint range should be | |
8254 | placed, given the SAL of the end of the range. This is so that if | |
8255 | the user provides a line number, the end of the range is set to the | |
8256 | last instruction of the given line. */ | |
8257 | ||
8258 | static CORE_ADDR | |
8259 | find_breakpoint_range_end (struct symtab_and_line sal) | |
8260 | { | |
8261 | CORE_ADDR end; | |
8262 | ||
8263 | /* If the user provided a PC value, use it. Otherwise, | |
8264 | find the address of the end of the given location. */ | |
8265 | if (sal.explicit_pc) | |
8266 | end = sal.pc; | |
8267 | else | |
8268 | { | |
8269 | int ret; | |
8270 | CORE_ADDR start; | |
8271 | ||
8272 | ret = find_line_pc_range (sal, &start, &end); | |
8273 | if (!ret) | |
8274 | error (_("Could not find location of the end of the range.")); | |
8275 | ||
8276 | /* find_line_pc_range returns the start of the next line. */ | |
8277 | end--; | |
8278 | } | |
8279 | ||
8280 | return end; | |
8281 | } | |
8282 | ||
8283 | /* Implement the "break-range" CLI command. */ | |
8284 | ||
8285 | static void | |
8286 | break_range_command (char *arg, int from_tty) | |
8287 | { | |
8288 | char *arg_start, *addr_string_start, *addr_string_end; | |
8289 | struct linespec_result canonical_start, canonical_end; | |
8290 | int bp_count, can_use_bp, length; | |
8291 | CORE_ADDR end; | |
8292 | struct breakpoint *b; | |
8293 | struct symtab_and_line sal_start, sal_end; | |
8294 | struct symtabs_and_lines sals_start, sals_end; | |
8295 | struct cleanup *cleanup_bkpt; | |
8296 | ||
8297 | /* We don't support software ranged breakpoints. */ | |
8298 | if (target_ranged_break_num_registers () < 0) | |
8299 | error (_("This target does not support hardware ranged breakpoints.")); | |
8300 | ||
8301 | bp_count = hw_breakpoint_used_count (); | |
8302 | bp_count += target_ranged_break_num_registers (); | |
8303 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
8304 | bp_count, 0); | |
8305 | if (can_use_bp < 0) | |
8306 | error (_("Hardware breakpoints used exceeds limit.")); | |
8307 | ||
8308 | if (arg == NULL || arg[0] == '\0') | |
8309 | error(_("No address range specified.")); | |
8310 | ||
8311 | sals_start.sals = NULL; | |
8312 | sals_start.nelts = 0; | |
8313 | init_linespec_result (&canonical_start); | |
8314 | ||
8315 | while (*arg == ' ' || *arg == '\t') | |
8316 | arg++; | |
8317 | ||
58438ac1 | 8318 | parse_breakpoint_sals (&arg, &sals_start, &canonical_start); |
f1310107 TJB |
8319 | |
8320 | sal_start = sals_start.sals[0]; | |
8321 | addr_string_start = canonical_start.canonical[0]; | |
8322 | cleanup_bkpt = make_cleanup (xfree, addr_string_start); | |
8323 | xfree (sals_start.sals); | |
8324 | xfree (canonical_start.canonical); | |
8325 | ||
8326 | if (arg[0] != ',') | |
8327 | error (_("Too few arguments.")); | |
8328 | else if (sals_start.nelts == 0) | |
8329 | error (_("Could not find location of the beginning of the range.")); | |
8330 | else if (sals_start.nelts != 1) | |
8331 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8332 | ||
8333 | resolve_sal_pc (&sal_start); | |
8334 | ||
8335 | arg++; /* Skip the comma. */ | |
8336 | while (*arg == ' ' || *arg == '\t') | |
8337 | arg++; | |
8338 | ||
8339 | /* Parse the end location. */ | |
8340 | ||
8341 | sals_end.sals = NULL; | |
8342 | sals_end.nelts = 0; | |
8343 | init_linespec_result (&canonical_end); | |
8344 | arg_start = arg; | |
8345 | ||
423f41a5 | 8346 | /* We call decode_line_1 directly here instead of using |
f1310107 TJB |
8347 | parse_breakpoint_sals because we need to specify the start location's |
8348 | symtab and line as the default symtab and line for the end of the | |
8349 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
8350 | where +14 means 14 lines from the start location. */ | |
8351 | sals_end = decode_line_1 (&arg, 1, sal_start.symtab, sal_start.line, | |
58438ac1 | 8352 | &canonical_end); |
f1310107 TJB |
8353 | |
8354 | /* canonical_end can be NULL if it was of the form "*0xdeadbeef". */ | |
8355 | if (canonical_end.canonical == NULL) | |
38a714bb | 8356 | canonical_end.canonical = xcalloc (1, sizeof (char *)); |
f1310107 TJB |
8357 | /* Add the string if not present. */ |
8358 | if (arg_start != arg && canonical_end.canonical[0] == NULL) | |
8359 | canonical_end.canonical[0] = savestring (arg_start, arg - arg_start); | |
8360 | ||
8361 | sal_end = sals_end.sals[0]; | |
8362 | addr_string_end = canonical_end.canonical[0]; | |
8363 | make_cleanup (xfree, addr_string_end); | |
8364 | xfree (sals_end.sals); | |
8365 | xfree (canonical_end.canonical); | |
8366 | ||
8367 | if (sals_end.nelts == 0) | |
8368 | error (_("Could not find location of the end of the range.")); | |
8369 | else if (sals_end.nelts != 1) | |
8370 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8371 | ||
8372 | resolve_sal_pc (&sal_end); | |
8373 | ||
8374 | end = find_breakpoint_range_end (sal_end); | |
8375 | if (sal_start.pc > end) | |
177b42fe | 8376 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
8377 | |
8378 | length = end - sal_start.pc + 1; | |
8379 | if (length < 0) | |
8380 | /* Length overflowed. */ | |
8381 | error (_("Address range too large.")); | |
8382 | else if (length == 1) | |
8383 | { | |
8384 | /* This range is simple enough to be handled by | |
8385 | the `hbreak' command. */ | |
8386 | hbreak_command (addr_string_start, 1); | |
8387 | ||
8388 | do_cleanups (cleanup_bkpt); | |
8389 | ||
8390 | return; | |
8391 | } | |
8392 | ||
8393 | /* Now set up the breakpoint. */ | |
8394 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 8395 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
8396 | set_breakpoint_count (breakpoint_count + 1); |
8397 | b->number = breakpoint_count; | |
8398 | b->disposition = disp_donttouch; | |
8399 | b->addr_string = addr_string_start; | |
8400 | b->addr_string_range_end = addr_string_end; | |
f1310107 TJB |
8401 | b->loc->length = length; |
8402 | ||
8403 | discard_cleanups (cleanup_bkpt); | |
8404 | ||
8405 | mention (b); | |
8d3788bd | 8406 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
8407 | update_global_location_list (1); |
8408 | } | |
8409 | ||
4a64f543 MS |
8410 | /* Return non-zero if EXP is verified as constant. Returned zero |
8411 | means EXP is variable. Also the constant detection may fail for | |
8412 | some constant expressions and in such case still falsely return | |
8413 | zero. */ | |
65d79d4b SDJ |
8414 | static int |
8415 | watchpoint_exp_is_const (const struct expression *exp) | |
8416 | { | |
8417 | int i = exp->nelts; | |
8418 | ||
8419 | while (i > 0) | |
8420 | { | |
8421 | int oplenp, argsp; | |
8422 | ||
8423 | /* We are only interested in the descriptor of each element. */ | |
8424 | operator_length (exp, i, &oplenp, &argsp); | |
8425 | i -= oplenp; | |
8426 | ||
8427 | switch (exp->elts[i].opcode) | |
8428 | { | |
8429 | case BINOP_ADD: | |
8430 | case BINOP_SUB: | |
8431 | case BINOP_MUL: | |
8432 | case BINOP_DIV: | |
8433 | case BINOP_REM: | |
8434 | case BINOP_MOD: | |
8435 | case BINOP_LSH: | |
8436 | case BINOP_RSH: | |
8437 | case BINOP_LOGICAL_AND: | |
8438 | case BINOP_LOGICAL_OR: | |
8439 | case BINOP_BITWISE_AND: | |
8440 | case BINOP_BITWISE_IOR: | |
8441 | case BINOP_BITWISE_XOR: | |
8442 | case BINOP_EQUAL: | |
8443 | case BINOP_NOTEQUAL: | |
8444 | case BINOP_LESS: | |
8445 | case BINOP_GTR: | |
8446 | case BINOP_LEQ: | |
8447 | case BINOP_GEQ: | |
8448 | case BINOP_REPEAT: | |
8449 | case BINOP_COMMA: | |
8450 | case BINOP_EXP: | |
8451 | case BINOP_MIN: | |
8452 | case BINOP_MAX: | |
8453 | case BINOP_INTDIV: | |
8454 | case BINOP_CONCAT: | |
8455 | case BINOP_IN: | |
8456 | case BINOP_RANGE: | |
8457 | case TERNOP_COND: | |
8458 | case TERNOP_SLICE: | |
8459 | case TERNOP_SLICE_COUNT: | |
8460 | ||
8461 | case OP_LONG: | |
8462 | case OP_DOUBLE: | |
8463 | case OP_DECFLOAT: | |
8464 | case OP_LAST: | |
8465 | case OP_COMPLEX: | |
8466 | case OP_STRING: | |
8467 | case OP_BITSTRING: | |
8468 | case OP_ARRAY: | |
8469 | case OP_TYPE: | |
8470 | case OP_NAME: | |
8471 | case OP_OBJC_NSSTRING: | |
8472 | ||
8473 | case UNOP_NEG: | |
8474 | case UNOP_LOGICAL_NOT: | |
8475 | case UNOP_COMPLEMENT: | |
8476 | case UNOP_ADDR: | |
8477 | case UNOP_HIGH: | |
4a64f543 MS |
8478 | /* Unary, binary and ternary operators: We have to check |
8479 | their operands. If they are constant, then so is the | |
8480 | result of that operation. For instance, if A and B are | |
8481 | determined to be constants, then so is "A + B". | |
8482 | ||
8483 | UNOP_IND is one exception to the rule above, because the | |
8484 | value of *ADDR is not necessarily a constant, even when | |
8485 | ADDR is. */ | |
65d79d4b SDJ |
8486 | break; |
8487 | ||
8488 | case OP_VAR_VALUE: | |
8489 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8490 | |
65d79d4b | 8491 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8492 | possible that a buggy compiler could mark a variable as |
8493 | constant even when it is not, and TYPE_CONST would return | |
8494 | true in this case, while SYMBOL_CLASS wouldn't. | |
8495 | ||
8496 | We also have to check for function symbols because they | |
8497 | are always constant. */ | |
65d79d4b SDJ |
8498 | { |
8499 | struct symbol *s = exp->elts[i + 2].symbol; | |
8500 | ||
8501 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8502 | && SYMBOL_CLASS (s) != LOC_CONST | |
8503 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8504 | return 0; | |
8505 | break; | |
8506 | } | |
8507 | ||
8508 | /* The default action is to return 0 because we are using | |
8509 | the optimistic approach here: If we don't know something, | |
8510 | then it is not a constant. */ | |
8511 | default: | |
8512 | return 0; | |
8513 | } | |
8514 | } | |
8515 | ||
8516 | return 1; | |
8517 | } | |
8518 | ||
3a5c3e22 PA |
8519 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
8520 | ||
8521 | static void | |
8522 | dtor_watchpoint (struct breakpoint *self) | |
8523 | { | |
8524 | struct watchpoint *w = (struct watchpoint *) self; | |
8525 | ||
8526 | xfree (w->cond_exp); | |
8527 | xfree (w->exp); | |
8528 | xfree (w->exp_string); | |
8529 | xfree (w->exp_string_reparse); | |
8530 | value_free (w->val); | |
8531 | ||
8532 | base_breakpoint_ops.dtor (self); | |
8533 | } | |
8534 | ||
348d480f PA |
8535 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
8536 | ||
8537 | static void | |
8538 | re_set_watchpoint (struct breakpoint *b) | |
8539 | { | |
3a5c3e22 PA |
8540 | struct watchpoint *w = (struct watchpoint *) b; |
8541 | ||
348d480f PA |
8542 | /* Watchpoint can be either on expression using entirely global |
8543 | variables, or it can be on local variables. | |
8544 | ||
8545 | Watchpoints of the first kind are never auto-deleted, and even | |
8546 | persist across program restarts. Since they can use variables | |
8547 | from shared libraries, we need to reparse expression as libraries | |
8548 | are loaded and unloaded. | |
8549 | ||
8550 | Watchpoints on local variables can also change meaning as result | |
8551 | of solib event. For example, if a watchpoint uses both a local | |
8552 | and a global variables in expression, it's a local watchpoint, | |
8553 | but unloading of a shared library will make the expression | |
8554 | invalid. This is not a very common use case, but we still | |
8555 | re-evaluate expression, to avoid surprises to the user. | |
8556 | ||
8557 | Note that for local watchpoints, we re-evaluate it only if | |
8558 | watchpoints frame id is still valid. If it's not, it means the | |
8559 | watchpoint is out of scope and will be deleted soon. In fact, | |
8560 | I'm not sure we'll ever be called in this case. | |
8561 | ||
8562 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 8563 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 8564 | |
3a5c3e22 PA |
8565 | Don't do anything about disabled watchpoints, since they will be |
8566 | reevaluated again when enabled. */ | |
8567 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
8568 | } |
8569 | ||
77b06cd7 TJB |
8570 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8571 | ||
8572 | static int | |
8573 | insert_watchpoint (struct bp_location *bl) | |
8574 | { | |
3a5c3e22 PA |
8575 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8576 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8577 | |
8578 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8579 | w->cond_exp); |
77b06cd7 TJB |
8580 | } |
8581 | ||
8582 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8583 | ||
8584 | static int | |
8585 | remove_watchpoint (struct bp_location *bl) | |
8586 | { | |
3a5c3e22 PA |
8587 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8588 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8589 | |
8590 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8591 | w->cond_exp); |
e09342b5 TJB |
8592 | } |
8593 | ||
e09342b5 | 8594 | static int |
348d480f PA |
8595 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
8596 | struct address_space *aspace, CORE_ADDR bp_addr) | |
e09342b5 | 8597 | { |
348d480f | 8598 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 8599 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 8600 | |
348d480f PA |
8601 | /* Continuable hardware watchpoints are treated as non-existent if the |
8602 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
8603 | some data address). Otherwise gdb won't stop on a break instruction | |
8604 | in the code (not from a breakpoint) when a hardware watchpoint has | |
8605 | been defined. Also skip watchpoints which we know did not trigger | |
8606 | (did not match the data address). */ | |
8607 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 8608 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 8609 | return 0; |
9c06b0b4 | 8610 | |
348d480f | 8611 | return 1; |
9c06b0b4 TJB |
8612 | } |
8613 | ||
348d480f PA |
8614 | static void |
8615 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 8616 | { |
348d480f | 8617 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 8618 | |
348d480f | 8619 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
8620 | } |
8621 | ||
8622 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 8623 | hardware watchpoints. */ |
9c06b0b4 TJB |
8624 | |
8625 | static int | |
348d480f | 8626 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 8627 | { |
3a5c3e22 PA |
8628 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8629 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
8630 | |
8631 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
8632 | } |
8633 | ||
8634 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 8635 | hardware watchpoints. */ |
9c06b0b4 TJB |
8636 | |
8637 | static int | |
348d480f | 8638 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 8639 | { |
348d480f | 8640 | return b->type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
8641 | } |
8642 | ||
9c06b0b4 | 8643 | static enum print_stop_action |
348d480f | 8644 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 8645 | { |
348d480f PA |
8646 | struct cleanup *old_chain; |
8647 | struct breakpoint *b; | |
8648 | const struct bp_location *bl; | |
8649 | struct ui_stream *stb; | |
8650 | enum print_stop_action result; | |
3a5c3e22 | 8651 | struct watchpoint *w; |
348d480f PA |
8652 | |
8653 | gdb_assert (bs->bp_location_at != NULL); | |
8654 | ||
8655 | bl = bs->bp_location_at; | |
8656 | b = bs->breakpoint_at; | |
3a5c3e22 | 8657 | w = (struct watchpoint *) b; |
348d480f PA |
8658 | |
8659 | stb = ui_out_stream_new (uiout); | |
8660 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
9c06b0b4 TJB |
8661 | |
8662 | switch (b->type) | |
8663 | { | |
348d480f | 8664 | case bp_watchpoint: |
9c06b0b4 TJB |
8665 | case bp_hardware_watchpoint: |
8666 | annotate_watchpoint (b->number); | |
8667 | if (ui_out_is_mi_like_p (uiout)) | |
8668 | ui_out_field_string | |
8669 | (uiout, "reason", | |
8670 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8671 | mention (b); |
8672 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8673 | ui_out_text (uiout, "\nOld value = "); | |
8674 | watchpoint_value_print (bs->old_val, stb->stream); | |
8675 | ui_out_field_stream (uiout, "old", stb); | |
8676 | ui_out_text (uiout, "\nNew value = "); | |
3a5c3e22 | 8677 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8678 | ui_out_field_stream (uiout, "new", stb); |
8679 | ui_out_text (uiout, "\n"); | |
8680 | /* More than one watchpoint may have been triggered. */ | |
8681 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8682 | break; |
8683 | ||
8684 | case bp_read_watchpoint: | |
8685 | if (ui_out_is_mi_like_p (uiout)) | |
8686 | ui_out_field_string | |
8687 | (uiout, "reason", | |
8688 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8689 | mention (b); |
8690 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8691 | ui_out_text (uiout, "\nValue = "); | |
3a5c3e22 | 8692 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8693 | ui_out_field_stream (uiout, "value", stb); |
8694 | ui_out_text (uiout, "\n"); | |
8695 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8696 | break; |
8697 | ||
8698 | case bp_access_watchpoint: | |
348d480f PA |
8699 | if (bs->old_val != NULL) |
8700 | { | |
8701 | annotate_watchpoint (b->number); | |
8702 | if (ui_out_is_mi_like_p (uiout)) | |
8703 | ui_out_field_string | |
8704 | (uiout, "reason", | |
8705 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8706 | mention (b); | |
8707 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8708 | ui_out_text (uiout, "\nOld value = "); | |
8709 | watchpoint_value_print (bs->old_val, stb->stream); | |
8710 | ui_out_field_stream (uiout, "old", stb); | |
8711 | ui_out_text (uiout, "\nNew value = "); | |
8712 | } | |
8713 | else | |
8714 | { | |
8715 | mention (b); | |
8716 | if (ui_out_is_mi_like_p (uiout)) | |
8717 | ui_out_field_string | |
8718 | (uiout, "reason", | |
8719 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8720 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8721 | ui_out_text (uiout, "\nValue = "); | |
8722 | } | |
3a5c3e22 | 8723 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8724 | ui_out_field_stream (uiout, "new", stb); |
8725 | ui_out_text (uiout, "\n"); | |
8726 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8727 | break; |
8728 | default: | |
348d480f | 8729 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
8730 | } |
8731 | ||
348d480f PA |
8732 | do_cleanups (old_chain); |
8733 | return result; | |
8734 | } | |
8735 | ||
8736 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
8737 | watchpoints. */ | |
8738 | ||
8739 | static void | |
8740 | print_mention_watchpoint (struct breakpoint *b) | |
8741 | { | |
8742 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 8743 | struct watchpoint *w = (struct watchpoint *) b; |
348d480f PA |
8744 | |
8745 | switch (b->type) | |
8746 | { | |
8747 | case bp_watchpoint: | |
8748 | ui_out_text (uiout, "Watchpoint "); | |
8749 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8750 | break; | |
8751 | case bp_hardware_watchpoint: | |
8752 | ui_out_text (uiout, "Hardware watchpoint "); | |
8753 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8754 | break; | |
8755 | case bp_read_watchpoint: | |
8756 | ui_out_text (uiout, "Hardware read watchpoint "); | |
8757 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8758 | break; | |
8759 | case bp_access_watchpoint: | |
8760 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
8761 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8762 | break; | |
8763 | default: | |
8764 | internal_error (__FILE__, __LINE__, | |
8765 | _("Invalid hardware watchpoint type.")); | |
8766 | } | |
8767 | ||
8768 | ui_out_field_int (uiout, "number", b->number); | |
8769 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8770 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
8771 | do_cleanups (ui_out_chain); |
8772 | } | |
8773 | ||
8774 | /* Implement the "print_recreate" breakpoint_ops method for | |
8775 | watchpoints. */ | |
8776 | ||
8777 | static void | |
8778 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8779 | { | |
3a5c3e22 PA |
8780 | struct watchpoint *w = (struct watchpoint *) b; |
8781 | ||
348d480f PA |
8782 | switch (b->type) |
8783 | { | |
8784 | case bp_watchpoint: | |
8785 | case bp_hardware_watchpoint: | |
8786 | fprintf_unfiltered (fp, "watch"); | |
8787 | break; | |
8788 | case bp_read_watchpoint: | |
8789 | fprintf_unfiltered (fp, "rwatch"); | |
8790 | break; | |
8791 | case bp_access_watchpoint: | |
8792 | fprintf_unfiltered (fp, "awatch"); | |
8793 | break; | |
8794 | default: | |
8795 | internal_error (__FILE__, __LINE__, | |
8796 | _("Invalid watchpoint type.")); | |
8797 | } | |
8798 | ||
3a5c3e22 | 8799 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 8800 | print_recreate_thread (b, fp); |
348d480f PA |
8801 | } |
8802 | ||
8803 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8804 | ||
2060206e | 8805 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
8806 | |
8807 | /* Implement the "insert" breakpoint_ops method for | |
8808 | masked hardware watchpoints. */ | |
8809 | ||
8810 | static int | |
8811 | insert_masked_watchpoint (struct bp_location *bl) | |
8812 | { | |
3a5c3e22 PA |
8813 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8814 | ||
8815 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8816 | bl->watchpoint_type); |
8817 | } | |
8818 | ||
8819 | /* Implement the "remove" breakpoint_ops method for | |
8820 | masked hardware watchpoints. */ | |
8821 | ||
8822 | static int | |
8823 | remove_masked_watchpoint (struct bp_location *bl) | |
8824 | { | |
3a5c3e22 PA |
8825 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8826 | ||
8827 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8828 | bl->watchpoint_type); |
8829 | } | |
8830 | ||
8831 | /* Implement the "resources_needed" breakpoint_ops method for | |
8832 | masked hardware watchpoints. */ | |
8833 | ||
8834 | static int | |
8835 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
8836 | { | |
3a5c3e22 PA |
8837 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8838 | ||
8839 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
8840 | } |
8841 | ||
8842 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
8843 | masked hardware watchpoints. */ | |
8844 | ||
8845 | static int | |
8846 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
8847 | { | |
8848 | return 0; | |
8849 | } | |
8850 | ||
8851 | /* Implement the "print_it" breakpoint_ops method for | |
8852 | masked hardware watchpoints. */ | |
8853 | ||
8854 | static enum print_stop_action | |
8855 | print_it_masked_watchpoint (bpstat bs) | |
8856 | { | |
8857 | struct breakpoint *b = bs->breakpoint_at; | |
8858 | ||
8859 | /* Masked watchpoints have only one location. */ | |
8860 | gdb_assert (b->loc && b->loc->next == NULL); | |
8861 | ||
8862 | switch (b->type) | |
8863 | { | |
8864 | case bp_hardware_watchpoint: | |
8865 | annotate_watchpoint (b->number); | |
8866 | if (ui_out_is_mi_like_p (uiout)) | |
8867 | ui_out_field_string | |
8868 | (uiout, "reason", | |
8869 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8870 | break; | |
8871 | ||
8872 | case bp_read_watchpoint: | |
8873 | if (ui_out_is_mi_like_p (uiout)) | |
8874 | ui_out_field_string | |
8875 | (uiout, "reason", | |
8876 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8877 | break; | |
8878 | ||
8879 | case bp_access_watchpoint: | |
8880 | if (ui_out_is_mi_like_p (uiout)) | |
8881 | ui_out_field_string | |
8882 | (uiout, "reason", | |
8883 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8884 | break; | |
8885 | default: | |
8886 | internal_error (__FILE__, __LINE__, | |
8887 | _("Invalid hardware watchpoint type.")); | |
8888 | } | |
8889 | ||
8890 | mention (b); | |
9c06b0b4 TJB |
8891 | ui_out_text (uiout, _("\n\ |
8892 | Check the underlying instruction at PC for the memory\n\ | |
8893 | address and value which triggered this watchpoint.\n")); | |
8894 | ui_out_text (uiout, "\n"); | |
8895 | ||
8896 | /* More than one watchpoint may have been triggered. */ | |
8897 | return PRINT_UNKNOWN; | |
8898 | } | |
8899 | ||
8900 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8901 | masked hardware watchpoints. */ | |
8902 | ||
8903 | static void | |
8904 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
8905 | struct ui_out *uiout) | |
8906 | { | |
3a5c3e22 PA |
8907 | struct watchpoint *w = (struct watchpoint *) b; |
8908 | ||
9c06b0b4 TJB |
8909 | /* Masked watchpoints have only one location. */ |
8910 | gdb_assert (b->loc && b->loc->next == NULL); | |
8911 | ||
8912 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 8913 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
8914 | ui_out_text (uiout, "\n"); |
8915 | } | |
8916 | ||
8917 | /* Implement the "print_mention" breakpoint_ops method for | |
8918 | masked hardware watchpoints. */ | |
8919 | ||
8920 | static void | |
8921 | print_mention_masked_watchpoint (struct breakpoint *b) | |
8922 | { | |
3a5c3e22 | 8923 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
8924 | struct cleanup *ui_out_chain; |
8925 | ||
8926 | switch (b->type) | |
8927 | { | |
8928 | case bp_hardware_watchpoint: | |
8929 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
8930 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8931 | break; | |
8932 | case bp_read_watchpoint: | |
8933 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
8934 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8935 | break; | |
8936 | case bp_access_watchpoint: | |
8937 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
8938 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8939 | break; | |
8940 | default: | |
8941 | internal_error (__FILE__, __LINE__, | |
8942 | _("Invalid hardware watchpoint type.")); | |
8943 | } | |
8944 | ||
8945 | ui_out_field_int (uiout, "number", b->number); | |
8946 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8947 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
8948 | do_cleanups (ui_out_chain); |
8949 | } | |
8950 | ||
8951 | /* Implement the "print_recreate" breakpoint_ops method for | |
8952 | masked hardware watchpoints. */ | |
8953 | ||
8954 | static void | |
8955 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8956 | { | |
3a5c3e22 | 8957 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
8958 | char tmp[40]; |
8959 | ||
8960 | switch (b->type) | |
8961 | { | |
8962 | case bp_hardware_watchpoint: | |
8963 | fprintf_unfiltered (fp, "watch"); | |
8964 | break; | |
8965 | case bp_read_watchpoint: | |
8966 | fprintf_unfiltered (fp, "rwatch"); | |
8967 | break; | |
8968 | case bp_access_watchpoint: | |
8969 | fprintf_unfiltered (fp, "awatch"); | |
8970 | break; | |
8971 | default: | |
8972 | internal_error (__FILE__, __LINE__, | |
8973 | _("Invalid hardware watchpoint type.")); | |
8974 | } | |
8975 | ||
3a5c3e22 PA |
8976 | sprintf_vma (tmp, w->hw_wp_mask); |
8977 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 8978 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
8979 | } |
8980 | ||
8981 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
8982 | ||
2060206e | 8983 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
8984 | |
8985 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
8986 | ||
8987 | static int | |
8988 | is_masked_watchpoint (const struct breakpoint *b) | |
8989 | { | |
8990 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
8991 | } | |
8992 | ||
53a5351d JM |
8993 | /* accessflag: hw_write: watch write, |
8994 | hw_read: watch read, | |
8995 | hw_access: watch access (read or write) */ | |
c906108c | 8996 | static void |
84f4c1fe PM |
8997 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8998 | int just_location, int internal) | |
c906108c | 8999 | { |
a9634178 | 9000 | volatile struct gdb_exception e; |
d983da9c | 9001 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 9002 | struct expression *exp; |
60e1c644 | 9003 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 9004 | struct value *val, *mark, *result; |
c906108c | 9005 | struct frame_info *frame; |
c906108c SS |
9006 | char *exp_start = NULL; |
9007 | char *exp_end = NULL; | |
9c06b0b4 TJB |
9008 | char *tok, *end_tok; |
9009 | int toklen = -1; | |
c906108c SS |
9010 | char *cond_start = NULL; |
9011 | char *cond_end = NULL; | |
c906108c | 9012 | enum bptype bp_type; |
37e4754d | 9013 | int thread = -1; |
0cf6dd15 | 9014 | int pc = 0; |
9c06b0b4 TJB |
9015 | /* Flag to indicate whether we are going to use masks for |
9016 | the hardware watchpoint. */ | |
9017 | int use_mask = 0; | |
9018 | CORE_ADDR mask = 0; | |
3a5c3e22 | 9019 | struct watchpoint *w; |
c906108c | 9020 | |
37e4754d LM |
9021 | /* Make sure that we actually have parameters to parse. */ |
9022 | if (arg != NULL && arg[0] != '\0') | |
9023 | { | |
9c06b0b4 | 9024 | char *value_start; |
37e4754d | 9025 | |
9c06b0b4 TJB |
9026 | /* Look for "parameter value" pairs at the end |
9027 | of the arguments string. */ | |
9028 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
9029 | { | |
9030 | /* Skip whitespace at the end of the argument list. */ | |
9031 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9032 | tok--; | |
9033 | ||
9034 | /* Find the beginning of the last token. | |
9035 | This is the value of the parameter. */ | |
9036 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9037 | tok--; | |
9038 | value_start = tok + 1; | |
9039 | ||
9040 | /* Skip whitespace. */ | |
9041 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9042 | tok--; | |
9043 | ||
9044 | end_tok = tok; | |
9045 | ||
9046 | /* Find the beginning of the second to last token. | |
9047 | This is the parameter itself. */ | |
9048 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9049 | tok--; | |
9050 | tok++; | |
9051 | toklen = end_tok - tok + 1; | |
9052 | ||
9053 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
9054 | { | |
9055 | /* At this point we've found a "thread" token, which means | |
9056 | the user is trying to set a watchpoint that triggers | |
9057 | only in a specific thread. */ | |
9058 | char *endp; | |
37e4754d | 9059 | |
9c06b0b4 TJB |
9060 | if (thread != -1) |
9061 | error(_("You can specify only one thread.")); | |
37e4754d | 9062 | |
9c06b0b4 TJB |
9063 | /* Extract the thread ID from the next token. */ |
9064 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 9065 | |
9c06b0b4 TJB |
9066 | /* Check if the user provided a valid numeric value for the |
9067 | thread ID. */ | |
9068 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
9069 | error (_("Invalid thread ID specification %s."), value_start); | |
9070 | ||
9071 | /* Check if the thread actually exists. */ | |
9072 | if (!valid_thread_id (thread)) | |
9073 | error (_("Unknown thread %d."), thread); | |
9074 | } | |
9075 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
9076 | { | |
9077 | /* We've found a "mask" token, which means the user wants to | |
9078 | create a hardware watchpoint that is going to have the mask | |
9079 | facility. */ | |
9080 | struct value *mask_value, *mark; | |
37e4754d | 9081 | |
9c06b0b4 TJB |
9082 | if (use_mask) |
9083 | error(_("You can specify only one mask.")); | |
37e4754d | 9084 | |
9c06b0b4 | 9085 | use_mask = just_location = 1; |
37e4754d | 9086 | |
9c06b0b4 TJB |
9087 | mark = value_mark (); |
9088 | mask_value = parse_to_comma_and_eval (&value_start); | |
9089 | mask = value_as_address (mask_value); | |
9090 | value_free_to_mark (mark); | |
9091 | } | |
9092 | else | |
9093 | /* We didn't recognize what we found. We should stop here. */ | |
9094 | break; | |
37e4754d | 9095 | |
9c06b0b4 TJB |
9096 | /* Truncate the string and get rid of the "parameter value" pair before |
9097 | the arguments string is parsed by the parse_exp_1 function. */ | |
9098 | *tok = '\0'; | |
9099 | } | |
37e4754d LM |
9100 | } |
9101 | ||
9102 | /* Parse the rest of the arguments. */ | |
c906108c SS |
9103 | innermost_block = NULL; |
9104 | exp_start = arg; | |
9105 | exp = parse_exp_1 (&arg, 0, 0); | |
9106 | exp_end = arg; | |
fa8a61dc TT |
9107 | /* Remove trailing whitespace from the expression before saving it. |
9108 | This makes the eventual display of the expression string a bit | |
9109 | prettier. */ | |
9110 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9111 | --exp_end; | |
9112 | ||
65d79d4b SDJ |
9113 | /* Checking if the expression is not constant. */ |
9114 | if (watchpoint_exp_is_const (exp)) | |
9115 | { | |
9116 | int len; | |
9117 | ||
9118 | len = exp_end - exp_start; | |
9119 | while (len > 0 && isspace (exp_start[len - 1])) | |
9120 | len--; | |
9121 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9122 | } | |
9123 | ||
c906108c SS |
9124 | exp_valid_block = innermost_block; |
9125 | mark = value_mark (); | |
a1442452 | 9126 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
9127 | |
9128 | if (just_location) | |
9129 | { | |
9c06b0b4 TJB |
9130 | int ret; |
9131 | ||
06a64a0b | 9132 | exp_valid_block = NULL; |
a1442452 | 9133 | val = value_addr (result); |
06a64a0b TT |
9134 | release_value (val); |
9135 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
9136 | |
9137 | if (use_mask) | |
9138 | { | |
9139 | ret = target_masked_watch_num_registers (value_as_address (val), | |
9140 | mask); | |
9141 | if (ret == -1) | |
9142 | error (_("This target does not support masked watchpoints.")); | |
9143 | else if (ret == -2) | |
9144 | error (_("Invalid mask or memory region.")); | |
9145 | } | |
06a64a0b TT |
9146 | } |
9147 | else if (val != NULL) | |
fa4727a6 | 9148 | release_value (val); |
c906108c | 9149 | |
e9cafbcc TT |
9150 | tok = skip_spaces (arg); |
9151 | end_tok = skip_to_space (tok); | |
c906108c SS |
9152 | |
9153 | toklen = end_tok - tok; | |
9154 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
9155 | { | |
2d134ed3 PA |
9156 | struct expression *cond; |
9157 | ||
60e1c644 | 9158 | innermost_block = NULL; |
c906108c SS |
9159 | tok = cond_start = end_tok + 1; |
9160 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
9161 | |
9162 | /* The watchpoint expression may not be local, but the condition | |
9163 | may still be. E.g.: `watch global if local > 0'. */ | |
9164 | cond_exp_valid_block = innermost_block; | |
9165 | ||
2d134ed3 | 9166 | xfree (cond); |
c906108c SS |
9167 | cond_end = tok; |
9168 | } | |
9169 | if (*tok) | |
8a3fe4f8 | 9170 | error (_("Junk at end of command.")); |
c906108c | 9171 | |
53a5351d | 9172 | if (accessflag == hw_read) |
c5aa993b | 9173 | bp_type = bp_read_watchpoint; |
53a5351d | 9174 | else if (accessflag == hw_access) |
c5aa993b JM |
9175 | bp_type = bp_access_watchpoint; |
9176 | else | |
9177 | bp_type = bp_hardware_watchpoint; | |
c906108c | 9178 | |
d983da9c | 9179 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
9180 | |
9181 | /* If the expression is "local", then set up a "watchpoint scope" | |
9182 | breakpoint at the point where we've left the scope of the watchpoint | |
9183 | expression. Create the scope breakpoint before the watchpoint, so | |
9184 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 9185 | if (exp_valid_block && frame) |
d983da9c | 9186 | { |
edb3359d DJ |
9187 | if (frame_id_p (frame_unwind_caller_id (frame))) |
9188 | { | |
9189 | scope_breakpoint | |
a6d9a66e UW |
9190 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
9191 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
9192 | bp_watchpoint_scope, |
9193 | &momentary_breakpoint_ops); | |
d983da9c | 9194 | |
edb3359d | 9195 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 9196 | |
edb3359d DJ |
9197 | /* Automatically delete the breakpoint when it hits. */ |
9198 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 9199 | |
edb3359d DJ |
9200 | /* Only break in the proper frame (help with recursion). */ |
9201 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 9202 | |
edb3359d | 9203 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
9204 | scope_breakpoint->loc->gdbarch |
9205 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
9206 | scope_breakpoint->loc->requested_address |
9207 | = frame_unwind_caller_pc (frame); | |
9208 | scope_breakpoint->loc->address | |
a6d9a66e UW |
9209 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
9210 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
9211 | scope_breakpoint->type); |
9212 | } | |
d983da9c DJ |
9213 | } |
9214 | ||
c906108c | 9215 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
9216 | |
9217 | w = XCNEW (struct watchpoint); | |
9218 | b = &w->base; | |
348d480f | 9219 | if (use_mask) |
3a5c3e22 PA |
9220 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9221 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 9222 | else |
3a5c3e22 PA |
9223 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9224 | &watchpoint_breakpoint_ops); | |
37e4754d | 9225 | b->thread = thread; |
b5de0fa7 | 9226 | b->disposition = disp_donttouch; |
348d480f | 9227 | b->pspace = current_program_space; |
3a5c3e22 PA |
9228 | w->exp = exp; |
9229 | w->exp_valid_block = exp_valid_block; | |
9230 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
9231 | if (just_location) |
9232 | { | |
9233 | struct type *t = value_type (val); | |
9234 | CORE_ADDR addr = value_as_address (val); | |
9235 | char *name; | |
9236 | ||
9237 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
9238 | name = type_to_string (t); | |
9239 | ||
3a5c3e22 | 9240 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 9241 | core_addr_to_string (addr)); |
06a64a0b TT |
9242 | xfree (name); |
9243 | ||
3a5c3e22 | 9244 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
9245 | (int) (exp_end - exp_start), exp_start); |
9246 | ||
06a64a0b TT |
9247 | /* The above expression is in C. */ |
9248 | b->language = language_c; | |
9249 | } | |
9250 | else | |
3a5c3e22 | 9251 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
9252 | |
9253 | if (use_mask) | |
9254 | { | |
3a5c3e22 | 9255 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
9256 | } |
9257 | else | |
9258 | { | |
3a5c3e22 PA |
9259 | w->val = val; |
9260 | w->val_valid = 1; | |
9c06b0b4 | 9261 | } |
77b06cd7 | 9262 | |
c906108c SS |
9263 | if (cond_start) |
9264 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9265 | else | |
9266 | b->cond_string = 0; | |
c5aa993b | 9267 | |
c906108c | 9268 | if (frame) |
f6bc2008 | 9269 | { |
3a5c3e22 PA |
9270 | w->watchpoint_frame = get_frame_id (frame); |
9271 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 9272 | } |
c906108c | 9273 | else |
f6bc2008 | 9274 | { |
3a5c3e22 PA |
9275 | w->watchpoint_frame = null_frame_id; |
9276 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 9277 | } |
c906108c | 9278 | |
d983da9c | 9279 | if (scope_breakpoint != NULL) |
c906108c | 9280 | { |
d983da9c DJ |
9281 | /* The scope breakpoint is related to the watchpoint. We will |
9282 | need to act on them together. */ | |
9283 | b->related_breakpoint = scope_breakpoint; | |
9284 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9285 | } |
d983da9c | 9286 | |
06a64a0b TT |
9287 | if (!just_location) |
9288 | value_free_to_mark (mark); | |
2d134ed3 | 9289 | |
a9634178 TJB |
9290 | TRY_CATCH (e, RETURN_MASK_ALL) |
9291 | { | |
9292 | /* Finally update the new watchpoint. This creates the locations | |
9293 | that should be inserted. */ | |
3a5c3e22 | 9294 | update_watchpoint (w, 1); |
a9634178 TJB |
9295 | } |
9296 | if (e.reason < 0) | |
9297 | { | |
9298 | delete_breakpoint (b); | |
9299 | throw_exception (e); | |
9300 | } | |
9301 | ||
3a5c3e22 | 9302 | install_breakpoint (internal, b); |
c906108c SS |
9303 | } |
9304 | ||
e09342b5 | 9305 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 9306 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 9307 | |
c906108c | 9308 | static int |
a9634178 | 9309 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
9310 | { |
9311 | int found_memory_cnt = 0; | |
2e70b7b9 | 9312 | struct value *head = v; |
c906108c SS |
9313 | |
9314 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9315 | if (!can_use_hw_watchpoints) |
c906108c | 9316 | return 0; |
c5aa993b | 9317 | |
5c44784c JM |
9318 | /* Make sure that the value of the expression depends only upon |
9319 | memory contents, and values computed from them within GDB. If we | |
9320 | find any register references or function calls, we can't use a | |
9321 | hardware watchpoint. | |
9322 | ||
9323 | The idea here is that evaluating an expression generates a series | |
9324 | of values, one holding the value of every subexpression. (The | |
9325 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9326 | a*b+c.) GDB's values hold almost enough information to establish | |
9327 | the criteria given above --- they identify memory lvalues, | |
9328 | register lvalues, computed values, etcetera. So we can evaluate | |
9329 | the expression, and then scan the chain of values that leaves | |
9330 | behind to decide whether we can detect any possible change to the | |
9331 | expression's final value using only hardware watchpoints. | |
9332 | ||
9333 | However, I don't think that the values returned by inferior | |
9334 | function calls are special in any way. So this function may not | |
9335 | notice that an expression involving an inferior function call | |
9336 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9337 | for (; v; v = value_next (v)) |
c906108c | 9338 | { |
5c44784c | 9339 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9340 | { |
8464be76 DJ |
9341 | if (v != head && value_lazy (v)) |
9342 | /* A lazy memory lvalue in the chain is one that GDB never | |
9343 | needed to fetch; we either just used its address (e.g., | |
9344 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9345 | in `a,b'). This doesn't apply to HEAD; if that is | |
9346 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9347 | ; |
53a5351d | 9348 | else |
5c44784c JM |
9349 | { |
9350 | /* Ahh, memory we actually used! Check if we can cover | |
9351 | it with hardware watchpoints. */ | |
df407dfe | 9352 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9353 | |
9354 | /* We only watch structs and arrays if user asked for it | |
9355 | explicitly, never if they just happen to appear in a | |
9356 | middle of some value chain. */ | |
9357 | if (v == head | |
9358 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9359 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9360 | { | |
42ae5230 | 9361 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9362 | int len; |
9363 | int num_regs; | |
9364 | ||
a9634178 | 9365 | len = (target_exact_watchpoints |
e09342b5 TJB |
9366 | && is_scalar_type_recursive (vtype))? |
9367 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9368 | |
e09342b5 TJB |
9369 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9370 | if (!num_regs) | |
2e70b7b9 MS |
9371 | return 0; |
9372 | else | |
e09342b5 | 9373 | found_memory_cnt += num_regs; |
2e70b7b9 | 9374 | } |
5c44784c | 9375 | } |
c5aa993b | 9376 | } |
5086187c AC |
9377 | else if (VALUE_LVAL (v) != not_lval |
9378 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9379 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9380 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9381 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9382 | } |
9383 | ||
9384 | /* The expression itself looks suitable for using a hardware | |
9385 | watchpoint, but give the target machine a chance to reject it. */ | |
9386 | return found_memory_cnt; | |
9387 | } | |
9388 | ||
8b93c638 | 9389 | void |
84f4c1fe | 9390 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9391 | { |
84f4c1fe | 9392 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9393 | } |
9394 | ||
9395 | /* A helper function that looks for an argument at the start of a | |
9396 | string. The argument must also either be at the end of the string, | |
9397 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9398 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9399 | ||
9400 | static int | |
9401 | check_for_argument (char **str, char *arg, int arg_len) | |
9402 | { | |
9403 | if (strncmp (*str, arg, arg_len) == 0 | |
9404 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9405 | { | |
9406 | *str += arg_len; | |
9407 | return 1; | |
9408 | } | |
9409 | return 0; | |
9410 | } | |
9411 | ||
9412 | /* A helper function that looks for the "-location" argument and then | |
9413 | calls watch_command_1. */ | |
9414 | ||
9415 | static void | |
9416 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9417 | { | |
9418 | int just_location = 0; | |
9419 | ||
9420 | if (arg | |
9421 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9422 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9423 | { | |
e9cafbcc | 9424 | arg = skip_spaces (arg); |
06a64a0b TT |
9425 | just_location = 1; |
9426 | } | |
9427 | ||
84f4c1fe | 9428 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9429 | } |
8926118c | 9430 | |
c5aa993b | 9431 | static void |
fba45db2 | 9432 | watch_command (char *arg, int from_tty) |
c906108c | 9433 | { |
06a64a0b | 9434 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9435 | } |
9436 | ||
8b93c638 | 9437 | void |
84f4c1fe | 9438 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9439 | { |
84f4c1fe | 9440 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9441 | } |
8926118c | 9442 | |
c5aa993b | 9443 | static void |
fba45db2 | 9444 | rwatch_command (char *arg, int from_tty) |
c906108c | 9445 | { |
06a64a0b | 9446 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9447 | } |
9448 | ||
8b93c638 | 9449 | void |
84f4c1fe | 9450 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9451 | { |
84f4c1fe | 9452 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9453 | } |
8926118c | 9454 | |
c5aa993b | 9455 | static void |
fba45db2 | 9456 | awatch_command (char *arg, int from_tty) |
c906108c | 9457 | { |
06a64a0b | 9458 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9459 | } |
c906108c | 9460 | \f |
c5aa993b | 9461 | |
43ff13b4 | 9462 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9463 | because it uses the mechanisms of breakpoints. */ |
9464 | ||
bfec99b2 PA |
9465 | struct until_break_command_continuation_args |
9466 | { | |
9467 | struct breakpoint *breakpoint; | |
9468 | struct breakpoint *breakpoint2; | |
186c406b | 9469 | int thread_num; |
bfec99b2 PA |
9470 | }; |
9471 | ||
43ff13b4 | 9472 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9473 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9474 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9475 | command. */ |
c2c6d25f | 9476 | static void |
fa4cd53f | 9477 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 9478 | { |
bfec99b2 PA |
9479 | struct until_break_command_continuation_args *a = arg; |
9480 | ||
9481 | delete_breakpoint (a->breakpoint); | |
9482 | if (a->breakpoint2) | |
9483 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9484 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9485 | } |
9486 | ||
c906108c | 9487 | void |
ae66c1fc | 9488 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9489 | { |
9490 | struct symtabs_and_lines sals; | |
9491 | struct symtab_and_line sal; | |
206415a3 | 9492 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9493 | struct breakpoint *breakpoint; |
f107f563 | 9494 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9495 | struct cleanup *old_chain; |
186c406b TT |
9496 | int thread; |
9497 | struct thread_info *tp; | |
c906108c SS |
9498 | |
9499 | clear_proceed_status (); | |
9500 | ||
9501 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9502 | this function. */ |
c5aa993b | 9503 | |
c906108c SS |
9504 | if (default_breakpoint_valid) |
9505 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
58438ac1 | 9506 | default_breakpoint_line, NULL); |
c906108c | 9507 | else |
58438ac1 | 9508 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL); |
c5aa993b | 9509 | |
c906108c | 9510 | if (sals.nelts != 1) |
8a3fe4f8 | 9511 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9512 | |
c906108c | 9513 | sal = sals.sals[0]; |
4a64f543 | 9514 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9515 | |
c906108c | 9516 | if (*arg) |
8a3fe4f8 | 9517 | error (_("Junk at end of arguments.")); |
c5aa993b | 9518 | |
c906108c | 9519 | resolve_sal_pc (&sal); |
c5aa993b | 9520 | |
ae66c1fc EZ |
9521 | if (anywhere) |
9522 | /* If the user told us to continue until a specified location, | |
9523 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9524 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9525 | null_frame_id, bp_until); | |
ae66c1fc | 9526 | else |
4a64f543 MS |
9527 | /* Otherwise, specify the selected frame, because we want to stop |
9528 | only at the very same frame. */ | |
a6d9a66e UW |
9529 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9530 | get_stack_frame_id (frame), | |
ae66c1fc | 9531 | bp_until); |
c5aa993b | 9532 | |
f107f563 | 9533 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9534 | |
186c406b TT |
9535 | tp = inferior_thread (); |
9536 | thread = tp->num; | |
9537 | ||
ae66c1fc EZ |
9538 | /* Keep within the current frame, or in frames called by the current |
9539 | one. */ | |
edb3359d DJ |
9540 | |
9541 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9542 | { |
edb3359d DJ |
9543 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9544 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9545 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9546 | sal, | |
edb3359d | 9547 | frame_unwind_caller_id (frame), |
f107f563 VP |
9548 | bp_until); |
9549 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9550 | |
9551 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9552 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9553 | } |
c5aa993b | 9554 | |
c906108c | 9555 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9556 | |
4a64f543 MS |
9557 | /* If we are running asynchronously, and proceed call above has |
9558 | actually managed to start the target, arrange for breakpoints to | |
9559 | be deleted when the target stops. Otherwise, we're already | |
9560 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9561 | |
8ea051c5 | 9562 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9563 | { |
bfec99b2 PA |
9564 | struct until_break_command_continuation_args *args; |
9565 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9566 | |
bfec99b2 PA |
9567 | args->breakpoint = breakpoint; |
9568 | args->breakpoint2 = breakpoint2; | |
186c406b | 9569 | args->thread_num = thread; |
f107f563 VP |
9570 | |
9571 | discard_cleanups (old_chain); | |
95e54da7 PA |
9572 | add_continuation (inferior_thread (), |
9573 | until_break_command_continuation, args, | |
604ead4a | 9574 | xfree); |
f107f563 VP |
9575 | } |
9576 | else | |
c5aa993b | 9577 | do_cleanups (old_chain); |
c906108c | 9578 | } |
ae66c1fc | 9579 | |
c906108c SS |
9580 | /* This function attempts to parse an optional "if <cond>" clause |
9581 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9582 | |
c906108c SS |
9583 | Else, it returns a pointer to the condition string. (It does not |
9584 | attempt to evaluate the string against a particular block.) And, | |
9585 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9586 | if clause in the arg string. */ |
53a5351d | 9587 | |
c906108c | 9588 | static char * |
fba45db2 | 9589 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9590 | { |
c5aa993b JM |
9591 | char *cond_string; |
9592 | ||
9593 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9594 | return NULL; |
c5aa993b | 9595 | |
4a64f543 | 9596 | /* Skip the "if" keyword. */ |
c906108c | 9597 | (*arg) += 2; |
c5aa993b | 9598 | |
c906108c | 9599 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9600 | condition string. */ |
e9cafbcc | 9601 | *arg = skip_spaces (*arg); |
c906108c | 9602 | cond_string = *arg; |
c5aa993b | 9603 | |
4a64f543 MS |
9604 | /* Assume that the condition occupies the remainder of the arg |
9605 | string. */ | |
c906108c | 9606 | (*arg) += strlen (cond_string); |
c5aa993b | 9607 | |
c906108c SS |
9608 | return cond_string; |
9609 | } | |
c5aa993b | 9610 | |
c906108c SS |
9611 | /* Commands to deal with catching events, such as signals, exceptions, |
9612 | process start/exit, etc. */ | |
c5aa993b JM |
9613 | |
9614 | typedef enum | |
9615 | { | |
44feb3ce TT |
9616 | catch_fork_temporary, catch_vfork_temporary, |
9617 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9618 | } |
9619 | catch_fork_kind; | |
9620 | ||
c906108c | 9621 | static void |
cc59ec59 MS |
9622 | catch_fork_command_1 (char *arg, int from_tty, |
9623 | struct cmd_list_element *command) | |
c906108c | 9624 | { |
a6d9a66e | 9625 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9626 | char *cond_string = NULL; |
44feb3ce TT |
9627 | catch_fork_kind fork_kind; |
9628 | int tempflag; | |
9629 | ||
9630 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9631 | tempflag = (fork_kind == catch_fork_temporary | |
9632 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9633 | |
44feb3ce TT |
9634 | if (!arg) |
9635 | arg = ""; | |
e9cafbcc | 9636 | arg = skip_spaces (arg); |
c5aa993b | 9637 | |
c906108c | 9638 | /* The allowed syntax is: |
c5aa993b JM |
9639 | catch [v]fork |
9640 | catch [v]fork if <cond> | |
9641 | ||
4a64f543 | 9642 | First, check if there's an if clause. */ |
c906108c | 9643 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9644 | |
c906108c | 9645 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9646 | error (_("Junk at end of arguments.")); |
c5aa993b | 9647 | |
c906108c | 9648 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9649 | and enable reporting of such events. */ |
c5aa993b JM |
9650 | switch (fork_kind) |
9651 | { | |
44feb3ce TT |
9652 | case catch_fork_temporary: |
9653 | case catch_fork_permanent: | |
a6d9a66e | 9654 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9655 | &catch_fork_breakpoint_ops); |
c906108c | 9656 | break; |
44feb3ce TT |
9657 | case catch_vfork_temporary: |
9658 | case catch_vfork_permanent: | |
a6d9a66e | 9659 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9660 | &catch_vfork_breakpoint_ops); |
c906108c | 9661 | break; |
c5aa993b | 9662 | default: |
8a3fe4f8 | 9663 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9664 | break; |
c5aa993b | 9665 | } |
c906108c SS |
9666 | } |
9667 | ||
9668 | static void | |
cc59ec59 MS |
9669 | catch_exec_command_1 (char *arg, int from_tty, |
9670 | struct cmd_list_element *command) | |
c906108c | 9671 | { |
b4d90040 | 9672 | struct exec_catchpoint *c; |
a6d9a66e | 9673 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9674 | int tempflag; |
c5aa993b | 9675 | char *cond_string = NULL; |
c906108c | 9676 | |
44feb3ce TT |
9677 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9678 | ||
9679 | if (!arg) | |
9680 | arg = ""; | |
e9cafbcc | 9681 | arg = skip_spaces (arg); |
c906108c SS |
9682 | |
9683 | /* The allowed syntax is: | |
c5aa993b JM |
9684 | catch exec |
9685 | catch exec if <cond> | |
c906108c | 9686 | |
4a64f543 | 9687 | First, check if there's an if clause. */ |
c906108c SS |
9688 | cond_string = ep_parse_optional_if_clause (&arg); |
9689 | ||
9690 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9691 | error (_("Junk at end of arguments.")); |
c906108c | 9692 | |
b4d90040 PA |
9693 | c = XNEW (struct exec_catchpoint); |
9694 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
9695 | &catch_exec_breakpoint_ops); | |
9696 | c->exec_pathname = NULL; | |
9697 | ||
3a5c3e22 | 9698 | install_breakpoint (0, &c->base); |
c906108c | 9699 | } |
c5aa993b | 9700 | |
3086aeae | 9701 | static enum print_stop_action |
348d480f | 9702 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 9703 | { |
348d480f | 9704 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 9705 | int bp_temp, bp_throw; |
3086aeae | 9706 | |
ade92717 | 9707 | annotate_catchpoint (b->number); |
3086aeae | 9708 | |
ade92717 AR |
9709 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9710 | if (b->loc->address != b->loc->requested_address) | |
9711 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9712 | b->loc->address, | |
9713 | b->number, 1); | |
df2b6d2d | 9714 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9715 | ui_out_text (uiout, |
9716 | bp_temp ? "Temporary catchpoint " | |
9717 | : "Catchpoint "); | |
9718 | if (!ui_out_is_mi_like_p (uiout)) | |
9719 | ui_out_field_int (uiout, "bkptno", b->number); | |
9720 | ui_out_text (uiout, | |
c0b37c48 AR |
9721 | bp_throw ? " (exception thrown), " |
9722 | : " (exception caught), "); | |
ade92717 AR |
9723 | if (ui_out_is_mi_like_p (uiout)) |
9724 | { | |
9725 | ui_out_field_string (uiout, "reason", | |
9726 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9727 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9728 | ui_out_field_int (uiout, "bkptno", b->number); | |
9729 | } | |
3086aeae DJ |
9730 | return PRINT_SRC_AND_LOC; |
9731 | } | |
9732 | ||
9733 | static void | |
cc59ec59 MS |
9734 | print_one_exception_catchpoint (struct breakpoint *b, |
9735 | struct bp_location **last_loc) | |
3086aeae | 9736 | { |
79a45b7d | 9737 | struct value_print_options opts; |
cc59ec59 | 9738 | |
79a45b7d TT |
9739 | get_user_print_options (&opts); |
9740 | if (opts.addressprint) | |
3086aeae DJ |
9741 | { |
9742 | annotate_field (4); | |
604133b5 AR |
9743 | if (b->loc == NULL || b->loc->shlib_disabled) |
9744 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9745 | else | |
5af949e3 UW |
9746 | ui_out_field_core_addr (uiout, "addr", |
9747 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9748 | } |
9749 | annotate_field (5); | |
604133b5 | 9750 | if (b->loc) |
a6d9a66e | 9751 | *last_loc = b->loc; |
3086aeae DJ |
9752 | if (strstr (b->addr_string, "throw") != NULL) |
9753 | ui_out_field_string (uiout, "what", "exception throw"); | |
9754 | else | |
9755 | ui_out_field_string (uiout, "what", "exception catch"); | |
9756 | } | |
9757 | ||
9758 | static void | |
9759 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9760 | { | |
ade92717 AR |
9761 | int bp_temp; |
9762 | int bp_throw; | |
9763 | ||
df2b6d2d | 9764 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9765 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9766 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9767 | : _("Catchpoint ")); | |
9768 | ui_out_field_int (uiout, "bkptno", b->number); | |
9769 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9770 | : _(" (catch)")); | |
3086aeae DJ |
9771 | } |
9772 | ||
6149aea9 PA |
9773 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9774 | catch catchpoints. */ | |
9775 | ||
9776 | static void | |
4a64f543 MS |
9777 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9778 | struct ui_file *fp) | |
6149aea9 PA |
9779 | { |
9780 | int bp_temp; | |
9781 | int bp_throw; | |
9782 | ||
9783 | bp_temp = b->disposition == disp_del; | |
9784 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9785 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9786 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 9787 | print_recreate_thread (b, fp); |
6149aea9 PA |
9788 | } |
9789 | ||
2060206e | 9790 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
9791 | |
9792 | static int | |
9793 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9794 | enum exception_event_kind ex_event, int from_tty) | |
9795 | { | |
604133b5 AR |
9796 | char *trigger_func_name; |
9797 | ||
3086aeae | 9798 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9799 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9800 | else |
604133b5 | 9801 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9802 | |
8cdf0e15 VP |
9803 | create_breakpoint (get_current_arch (), |
9804 | trigger_func_name, cond_string, -1, | |
9805 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9806 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9807 | 0, |
9808 | AUTO_BOOLEAN_TRUE /* pending */, | |
9809 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9810 | 1 /* enabled */, |
9811 | 0 /* internal */); | |
3086aeae | 9812 | |
3086aeae DJ |
9813 | return 1; |
9814 | } | |
9815 | ||
4a64f543 | 9816 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9817 | |
9818 | static void | |
fba45db2 KB |
9819 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9820 | int tempflag, int from_tty) | |
c906108c | 9821 | { |
c5aa993b | 9822 | char *cond_string = NULL; |
c5aa993b | 9823 | |
44feb3ce TT |
9824 | if (!arg) |
9825 | arg = ""; | |
e9cafbcc | 9826 | arg = skip_spaces (arg); |
c5aa993b | 9827 | |
c906108c SS |
9828 | cond_string = ep_parse_optional_if_clause (&arg); |
9829 | ||
9830 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9831 | error (_("Junk at end of arguments.")); |
c906108c | 9832 | |
059fb39f PM |
9833 | if (ex_event != EX_EVENT_THROW |
9834 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9835 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9836 | |
3086aeae DJ |
9837 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9838 | return; | |
9839 | ||
8a3fe4f8 | 9840 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9841 | } |
9842 | ||
44feb3ce TT |
9843 | /* Implementation of "catch catch" command. */ |
9844 | ||
9845 | static void | |
9846 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9847 | { | |
9848 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9849 | |
44feb3ce TT |
9850 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9851 | } | |
9852 | ||
9853 | /* Implementation of "catch throw" command. */ | |
9854 | ||
9855 | static void | |
9856 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9857 | { | |
9858 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9859 | |
44feb3ce TT |
9860 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9861 | } | |
9862 | ||
9ac4176b | 9863 | void |
28010a5d PA |
9864 | init_ada_exception_breakpoint (struct breakpoint *b, |
9865 | struct gdbarch *gdbarch, | |
9866 | struct symtab_and_line sal, | |
9867 | char *addr_string, | |
c0a91b2b | 9868 | const struct breakpoint_ops *ops, |
28010a5d PA |
9869 | int tempflag, |
9870 | int from_tty) | |
f7f9143b | 9871 | { |
f7f9143b JB |
9872 | if (from_tty) |
9873 | { | |
5af949e3 UW |
9874 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9875 | if (!loc_gdbarch) | |
9876 | loc_gdbarch = gdbarch; | |
9877 | ||
6c95b8df PA |
9878 | describe_other_breakpoints (loc_gdbarch, |
9879 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9880 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9881 | version for exception catchpoints, because two catchpoints | |
9882 | used for different exception names will use the same address. | |
9883 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9884 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 9885 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
9886 | the user what type of catchpoint it is. The above is good |
9887 | enough for now, though. */ | |
9888 | } | |
9889 | ||
28010a5d | 9890 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
9891 | |
9892 | b->enable_state = bp_enabled; | |
9893 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
9894 | b->addr_string = addr_string; |
9895 | b->language = language_ada; | |
f7f9143b JB |
9896 | } |
9897 | ||
a96d9b2e SDJ |
9898 | /* Cleanup function for a syscall filter list. */ |
9899 | static void | |
9900 | clean_up_filters (void *arg) | |
9901 | { | |
9902 | VEC(int) *iter = *(VEC(int) **) arg; | |
9903 | VEC_free (int, iter); | |
9904 | } | |
9905 | ||
9906 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9907 | filter list, or NULL if no filtering is required. */ | |
9908 | static VEC(int) * | |
9909 | catch_syscall_split_args (char *arg) | |
9910 | { | |
9911 | VEC(int) *result = NULL; | |
9912 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9913 | ||
9914 | while (*arg != '\0') | |
9915 | { | |
9916 | int i, syscall_number; | |
9917 | char *endptr; | |
9918 | char cur_name[128]; | |
9919 | struct syscall s; | |
9920 | ||
9921 | /* Skip whitespace. */ | |
9922 | while (isspace (*arg)) | |
9923 | arg++; | |
9924 | ||
9925 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9926 | cur_name[i] = arg[i]; | |
9927 | cur_name[i] = '\0'; | |
9928 | arg += i; | |
9929 | ||
9930 | /* Check if the user provided a syscall name or a number. */ | |
9931 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9932 | if (*endptr == '\0') | |
bccd0dd2 | 9933 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9934 | else |
9935 | { | |
9936 | /* We have a name. Let's check if it's valid and convert it | |
9937 | to a number. */ | |
9938 | get_syscall_by_name (cur_name, &s); | |
9939 | ||
9940 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9941 | /* Here we have to issue an error instead of a warning, |
9942 | because GDB cannot do anything useful if there's no | |
9943 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9944 | error (_("Unknown syscall name '%s'."), cur_name); |
9945 | } | |
9946 | ||
9947 | /* Ok, it's valid. */ | |
9948 | VEC_safe_push (int, result, s.number); | |
9949 | } | |
9950 | ||
9951 | discard_cleanups (cleanup); | |
9952 | return result; | |
9953 | } | |
9954 | ||
9955 | /* Implement the "catch syscall" command. */ | |
9956 | ||
9957 | static void | |
cc59ec59 MS |
9958 | catch_syscall_command_1 (char *arg, int from_tty, |
9959 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9960 | { |
9961 | int tempflag; | |
9962 | VEC(int) *filter; | |
9963 | struct syscall s; | |
9964 | struct gdbarch *gdbarch = get_current_arch (); | |
9965 | ||
9966 | /* Checking if the feature if supported. */ | |
9967 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9968 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9969 | this architecture yet.")); |
a96d9b2e SDJ |
9970 | |
9971 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9972 | ||
e9cafbcc | 9973 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9974 | |
9975 | /* We need to do this first "dummy" translation in order | |
9976 | to get the syscall XML file loaded or, most important, | |
9977 | to display a warning to the user if there's no XML file | |
9978 | for his/her architecture. */ | |
9979 | get_syscall_by_number (0, &s); | |
9980 | ||
9981 | /* The allowed syntax is: | |
9982 | catch syscall | |
9983 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9984 | ||
9985 | Let's check if there's a syscall name. */ | |
9986 | ||
9987 | if (arg != NULL) | |
9988 | filter = catch_syscall_split_args (arg); | |
9989 | else | |
9990 | filter = NULL; | |
9991 | ||
9992 | create_syscall_event_catchpoint (tempflag, filter, | |
9993 | &catch_syscall_breakpoint_ops); | |
9994 | } | |
9995 | ||
c906108c | 9996 | static void |
fba45db2 | 9997 | catch_command (char *arg, int from_tty) |
c906108c | 9998 | { |
44feb3ce | 9999 | error (_("Catch requires an event name.")); |
c906108c SS |
10000 | } |
10001 | \f | |
10002 | ||
10003 | static void | |
fba45db2 | 10004 | tcatch_command (char *arg, int from_tty) |
c906108c | 10005 | { |
44feb3ce | 10006 | error (_("Catch requires an event name.")); |
c906108c SS |
10007 | } |
10008 | ||
80f8a6eb | 10009 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10010 | |
10011 | static void | |
fba45db2 | 10012 | clear_command (char *arg, int from_tty) |
c906108c | 10013 | { |
d6e956e5 VP |
10014 | struct breakpoint *b; |
10015 | VEC(breakpoint_p) *found = 0; | |
10016 | int ix; | |
c906108c SS |
10017 | int default_match; |
10018 | struct symtabs_and_lines sals; | |
10019 | struct symtab_and_line sal; | |
c906108c SS |
10020 | int i; |
10021 | ||
10022 | if (arg) | |
10023 | { | |
10024 | sals = decode_line_spec (arg, 1); | |
10025 | default_match = 0; | |
10026 | } | |
10027 | else | |
10028 | { | |
c5aa993b | 10029 | sals.sals = (struct symtab_and_line *) |
c906108c | 10030 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 10031 | make_cleanup (xfree, sals.sals); |
4a64f543 | 10032 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
10033 | sal.line = default_breakpoint_line; |
10034 | sal.symtab = default_breakpoint_symtab; | |
10035 | sal.pc = default_breakpoint_address; | |
6c95b8df | 10036 | sal.pspace = default_breakpoint_pspace; |
c906108c | 10037 | if (sal.symtab == 0) |
8a3fe4f8 | 10038 | error (_("No source file specified.")); |
c906108c SS |
10039 | |
10040 | sals.sals[0] = sal; | |
10041 | sals.nelts = 1; | |
10042 | ||
10043 | default_match = 1; | |
10044 | } | |
10045 | ||
4a64f543 MS |
10046 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10047 | seems, because all existing breakpoints typically have both | |
10048 | file/line and pc set. So, if clear is given file/line, we can | |
10049 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10050 | |
10051 | We only support clearing given the address explicitly | |
10052 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10053 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10054 | due to optimization, all in one block. |
4a64f543 MS |
10055 | |
10056 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10057 | PC corresponding to the same file:line, the breakpoint won't |
10058 | be cleared. We probably can still clear the breakpoint, but | |
10059 | since the other PC value is never presented to user, user | |
10060 | can only find it by guessing, and it does not seem important | |
10061 | to support that. */ | |
10062 | ||
4a64f543 MS |
10063 | /* For each line spec given, delete bps which correspond to it. Do |
10064 | it in two passes, solely to preserve the current behavior that | |
10065 | from_tty is forced true if we delete more than one | |
10066 | breakpoint. */ | |
c906108c | 10067 | |
80f8a6eb | 10068 | found = NULL; |
c906108c SS |
10069 | for (i = 0; i < sals.nelts; i++) |
10070 | { | |
10071 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
10072 | If line given (pc == 0), clear all bpts on specified line. |
10073 | If defaulting, clear all bpts on default line | |
c906108c | 10074 | or at default pc. |
c5aa993b JM |
10075 | |
10076 | defaulting sal.pc != 0 tests to do | |
10077 | ||
10078 | 0 1 pc | |
10079 | 1 1 pc _and_ line | |
10080 | 0 0 line | |
10081 | 1 0 <can't happen> */ | |
c906108c SS |
10082 | |
10083 | sal = sals.sals[i]; | |
c906108c | 10084 | |
4a64f543 | 10085 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 10086 | ALL_BREAKPOINTS (b) |
c5aa993b | 10087 | { |
0d381245 | 10088 | int match = 0; |
4a64f543 | 10089 | /* Are we going to delete b? */ |
cc60f2e3 | 10090 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
10091 | { |
10092 | struct bp_location *loc = b->loc; | |
10093 | for (; loc; loc = loc->next) | |
10094 | { | |
6c95b8df PA |
10095 | int pc_match = sal.pc |
10096 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
10097 | && (loc->address == sal.pc) |
10098 | && (!section_is_overlay (loc->section) | |
10099 | || loc->section == sal.section); | |
10100 | int line_match = ((default_match || (0 == sal.pc)) | |
10101 | && b->source_file != NULL | |
10102 | && sal.symtab != NULL | |
6c95b8df | 10103 | && sal.pspace == loc->pspace |
0ba1096a KT |
10104 | && filename_cmp (b->source_file, |
10105 | sal.symtab->filename) == 0 | |
0d381245 VP |
10106 | && b->line_number == sal.line); |
10107 | if (pc_match || line_match) | |
10108 | { | |
10109 | match = 1; | |
10110 | break; | |
10111 | } | |
10112 | } | |
10113 | } | |
10114 | ||
10115 | if (match) | |
d6e956e5 | 10116 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 10117 | } |
80f8a6eb MS |
10118 | } |
10119 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 10120 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
10121 | { |
10122 | if (arg) | |
8a3fe4f8 | 10123 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10124 | else |
8a3fe4f8 | 10125 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10126 | } |
c906108c | 10127 | |
d6e956e5 | 10128 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 10129 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10130 | if (from_tty) |
a3f17187 | 10131 | { |
d6e956e5 | 10132 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
10133 | printf_unfiltered (_("Deleted breakpoint ")); |
10134 | else | |
10135 | printf_unfiltered (_("Deleted breakpoints ")); | |
10136 | } | |
80f8a6eb | 10137 | breakpoints_changed (); |
d6e956e5 VP |
10138 | |
10139 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 10140 | { |
c5aa993b | 10141 | if (from_tty) |
d6e956e5 VP |
10142 | printf_unfiltered ("%d ", b->number); |
10143 | delete_breakpoint (b); | |
c906108c | 10144 | } |
80f8a6eb MS |
10145 | if (from_tty) |
10146 | putchar_unfiltered ('\n'); | |
c906108c SS |
10147 | } |
10148 | \f | |
10149 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10150 | all breakpoints that are marked for deletion, whether hit or not. | |
10151 | This is called after any breakpoint is hit, or after errors. */ | |
10152 | ||
10153 | void | |
fba45db2 | 10154 | breakpoint_auto_delete (bpstat bs) |
c906108c | 10155 | { |
35df4500 | 10156 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10157 | |
10158 | for (; bs; bs = bs->next) | |
f431efe5 PA |
10159 | if (bs->breakpoint_at |
10160 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10161 | && bs->stop) |
f431efe5 | 10162 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10163 | |
35df4500 | 10164 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10165 | { |
b5de0fa7 | 10166 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
10167 | delete_breakpoint (b); |
10168 | } | |
c906108c SS |
10169 | } |
10170 | ||
4a64f543 MS |
10171 | /* A comparison function for bp_location AP and BP being interfaced to |
10172 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
10173 | does breakpoint_address_is_meaningful say for its OWNER), | |
10174 | secondarily by ordering first bp_permanent OWNERed elements and | |
10175 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 10176 | qsort being an unstable algorithm. */ |
876fa593 JK |
10177 | |
10178 | static int | |
494cfb0f | 10179 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10180 | { |
494cfb0f JK |
10181 | struct bp_location *a = *(void **) ap; |
10182 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10183 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10184 | int a_perm = a->owner->enable_state == bp_permanent; |
10185 | int b_perm = b->owner->enable_state == bp_permanent; | |
10186 | ||
10187 | if (a->address != b->address) | |
10188 | return (a->address > b->address) - (a->address < b->address); | |
10189 | ||
10190 | /* Sort permanent breakpoints first. */ | |
10191 | if (a_perm != b_perm) | |
10192 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10193 | ||
4a64f543 MS |
10194 | /* Make the user-visible order stable across GDB runs. Locations of |
10195 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10196 | |
10197 | if (a->owner->number != b->owner->number) | |
10198 | return (a->owner->number > b->owner->number) | |
10199 | - (a->owner->number < b->owner->number); | |
10200 | ||
10201 | return (a > b) - (a < b); | |
10202 | } | |
10203 | ||
876fa593 | 10204 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10205 | bp_location_shadow_len_after_address_max according to the current |
10206 | content of the bp_location array. */ | |
f7545552 TT |
10207 | |
10208 | static void | |
876fa593 | 10209 | bp_location_target_extensions_update (void) |
f7545552 | 10210 | { |
876fa593 JK |
10211 | struct bp_location *bl, **blp_tmp; |
10212 | ||
10213 | bp_location_placed_address_before_address_max = 0; | |
10214 | bp_location_shadow_len_after_address_max = 0; | |
10215 | ||
10216 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10217 | { | |
10218 | CORE_ADDR start, end, addr; | |
10219 | ||
10220 | if (!bp_location_has_shadow (bl)) | |
10221 | continue; | |
10222 | ||
10223 | start = bl->target_info.placed_address; | |
10224 | end = start + bl->target_info.shadow_len; | |
10225 | ||
10226 | gdb_assert (bl->address >= start); | |
10227 | addr = bl->address - start; | |
10228 | if (addr > bp_location_placed_address_before_address_max) | |
10229 | bp_location_placed_address_before_address_max = addr; | |
10230 | ||
10231 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10232 | ||
10233 | gdb_assert (bl->address < end); | |
10234 | addr = end - bl->address; | |
10235 | if (addr > bp_location_shadow_len_after_address_max) | |
10236 | bp_location_shadow_len_after_address_max = addr; | |
10237 | } | |
f7545552 TT |
10238 | } |
10239 | ||
4cd9bd08 | 10240 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10241 | into the inferior, only remove already-inserted locations that no |
10242 | longer should be inserted. Functions that delete a breakpoint or | |
10243 | breakpoints should pass false, so that deleting a breakpoint | |
10244 | doesn't have the side effect of inserting the locations of other | |
10245 | breakpoints that are marked not-inserted, but should_be_inserted | |
10246 | returns true on them. | |
10247 | ||
10248 | This behaviour is useful is situations close to tear-down -- e.g., | |
10249 | after an exec, while the target still has execution, but breakpoint | |
10250 | shadows of the previous executable image should *NOT* be restored | |
10251 | to the new image; or before detaching, where the target still has | |
10252 | execution and wants to delete breakpoints from GDB's lists, and all | |
10253 | breakpoints had already been removed from the inferior. */ | |
10254 | ||
0d381245 | 10255 | static void |
b60e7edf | 10256 | update_global_location_list (int should_insert) |
0d381245 | 10257 | { |
74960c60 | 10258 | struct breakpoint *b; |
876fa593 | 10259 | struct bp_location **locp, *loc; |
f7545552 TT |
10260 | struct cleanup *cleanups; |
10261 | ||
2d134ed3 PA |
10262 | /* Used in the duplicates detection below. When iterating over all |
10263 | bp_locations, points to the first bp_location of a given address. | |
10264 | Breakpoints and watchpoints of different types are never | |
10265 | duplicates of each other. Keep one pointer for each type of | |
10266 | breakpoint/watchpoint, so we only need to loop over all locations | |
10267 | once. */ | |
10268 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10269 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10270 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10271 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10272 | |
4a64f543 MS |
10273 | /* Saved former bp_location array which we compare against the newly |
10274 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10275 | struct bp_location **old_location, **old_locp; |
10276 | unsigned old_location_count; | |
10277 | ||
10278 | old_location = bp_location; | |
10279 | old_location_count = bp_location_count; | |
10280 | bp_location = NULL; | |
10281 | bp_location_count = 0; | |
10282 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10283 | |
74960c60 | 10284 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10285 | for (loc = b->loc; loc; loc = loc->next) |
10286 | bp_location_count++; | |
10287 | ||
10288 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10289 | locp = bp_location; | |
10290 | ALL_BREAKPOINTS (b) | |
10291 | for (loc = b->loc; loc; loc = loc->next) | |
10292 | *locp++ = loc; | |
10293 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10294 | bp_location_compare); |
876fa593 JK |
10295 | |
10296 | bp_location_target_extensions_update (); | |
74960c60 | 10297 | |
4a64f543 MS |
10298 | /* Identify bp_location instances that are no longer present in the |
10299 | new list, and therefore should be freed. Note that it's not | |
10300 | necessary that those locations should be removed from inferior -- | |
10301 | if there's another location at the same address (previously | |
10302 | marked as duplicate), we don't need to remove/insert the | |
10303 | location. | |
876fa593 | 10304 | |
4a64f543 MS |
10305 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10306 | and former bp_location array state respectively. */ | |
876fa593 JK |
10307 | |
10308 | locp = bp_location; | |
10309 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10310 | old_locp++) | |
74960c60 | 10311 | { |
876fa593 | 10312 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10313 | struct bp_location **loc2p; |
876fa593 | 10314 | |
e5dd4106 | 10315 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 10316 | not, we have to free it. */ |
c7d46a38 | 10317 | int found_object = 0; |
20874c92 VP |
10318 | /* Tells if the location should remain inserted in the target. */ |
10319 | int keep_in_target = 0; | |
10320 | int removed = 0; | |
876fa593 | 10321 | |
4a64f543 MS |
10322 | /* Skip LOCP entries which will definitely never be needed. |
10323 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10324 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10325 | && (*locp)->address < old_loc->address) |
876fa593 | 10326 | locp++; |
c7d46a38 PA |
10327 | |
10328 | for (loc2p = locp; | |
10329 | (loc2p < bp_location + bp_location_count | |
10330 | && (*loc2p)->address == old_loc->address); | |
10331 | loc2p++) | |
10332 | { | |
10333 | if (*loc2p == old_loc) | |
10334 | { | |
10335 | found_object = 1; | |
10336 | break; | |
10337 | } | |
10338 | } | |
74960c60 | 10339 | |
4a64f543 MS |
10340 | /* If this location is no longer present, and inserted, look if |
10341 | there's maybe a new location at the same address. If so, | |
10342 | mark that one inserted, and don't remove this one. This is | |
10343 | needed so that we don't have a time window where a breakpoint | |
10344 | at certain location is not inserted. */ | |
74960c60 | 10345 | |
876fa593 | 10346 | if (old_loc->inserted) |
0d381245 | 10347 | { |
4a64f543 MS |
10348 | /* If the location is inserted now, we might have to remove |
10349 | it. */ | |
74960c60 | 10350 | |
876fa593 | 10351 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10352 | { |
4a64f543 MS |
10353 | /* The location is still present in the location list, |
10354 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10355 | keep_in_target = 1; |
74960c60 VP |
10356 | } |
10357 | else | |
10358 | { | |
4a64f543 MS |
10359 | /* The location is either no longer present, or got |
10360 | disabled. See if there's another location at the | |
10361 | same address, in which case we don't need to remove | |
10362 | this one from the target. */ | |
876fa593 | 10363 | |
2bdf28a0 | 10364 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10365 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10366 | { | |
876fa593 | 10367 | for (loc2p = locp; |
c7d46a38 PA |
10368 | (loc2p < bp_location + bp_location_count |
10369 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10370 | loc2p++) |
10371 | { | |
10372 | struct bp_location *loc2 = *loc2p; | |
10373 | ||
2d134ed3 | 10374 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
10375 | { |
10376 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
10377 | Duplicates check below will fix up this |
10378 | later. */ | |
c7d46a38 | 10379 | loc2->duplicate = 0; |
85d721b8 PA |
10380 | |
10381 | /* Read watchpoint locations are switched to | |
10382 | access watchpoints, if the former are not | |
10383 | supported, but the latter are. */ | |
10384 | if (is_hardware_watchpoint (old_loc->owner)) | |
10385 | { | |
10386 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10387 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10388 | } | |
10389 | ||
c7d46a38 PA |
10390 | if (loc2 != old_loc && should_be_inserted (loc2)) |
10391 | { | |
10392 | loc2->inserted = 1; | |
10393 | loc2->target_info = old_loc->target_info; | |
10394 | keep_in_target = 1; | |
10395 | break; | |
10396 | } | |
876fa593 JK |
10397 | } |
10398 | } | |
10399 | } | |
74960c60 VP |
10400 | } |
10401 | ||
20874c92 VP |
10402 | if (!keep_in_target) |
10403 | { | |
876fa593 | 10404 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10405 | { |
4a64f543 MS |
10406 | /* This is just about all we can do. We could keep |
10407 | this location on the global list, and try to | |
10408 | remove it next time, but there's no particular | |
10409 | reason why we will succeed next time. | |
20874c92 | 10410 | |
4a64f543 MS |
10411 | Note that at this point, old_loc->owner is still |
10412 | valid, as delete_breakpoint frees the breakpoint | |
10413 | only after calling us. */ | |
3e43a32a MS |
10414 | printf_filtered (_("warning: Error removing " |
10415 | "breakpoint %d\n"), | |
876fa593 | 10416 | old_loc->owner->number); |
20874c92 VP |
10417 | } |
10418 | removed = 1; | |
10419 | } | |
0d381245 | 10420 | } |
74960c60 VP |
10421 | |
10422 | if (!found_object) | |
1c5cfe86 | 10423 | { |
db82e815 PA |
10424 | if (removed && non_stop |
10425 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10426 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10427 | { |
db82e815 PA |
10428 | /* This location was removed from the target. In |
10429 | non-stop mode, a race condition is possible where | |
10430 | we've removed a breakpoint, but stop events for that | |
10431 | breakpoint are already queued and will arrive later. | |
10432 | We apply an heuristic to be able to distinguish such | |
10433 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10434 | breakpoint location for a bit, and will retire it | |
10435 | after we see some number of events. The theory here | |
10436 | is that reporting of events should, "on the average", | |
10437 | be fair, so after a while we'll see events from all | |
10438 | threads that have anything of interest, and no longer | |
10439 | need to keep this breakpoint location around. We | |
10440 | don't hold locations forever so to reduce chances of | |
10441 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10442 | SIGTRAP. | |
10443 | ||
10444 | The heuristic failing can be disastrous on | |
10445 | decr_pc_after_break targets. | |
10446 | ||
10447 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10448 | if we fail to recognize a late breakpoint SIGTRAP, | |
10449 | because events_till_retirement has reached 0 too | |
10450 | soon, we'll fail to do the PC adjustment, and report | |
10451 | a random SIGTRAP to the user. When the user resumes | |
10452 | the inferior, it will most likely immediately crash | |
2dec564e | 10453 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10454 | corrupted, because of being resumed e.g., in the |
10455 | middle of a multi-byte instruction, or skipped a | |
10456 | one-byte instruction. This was actually seen happen | |
10457 | on native x86-linux, and should be less rare on | |
10458 | targets that do not support new thread events, like | |
10459 | remote, due to the heuristic depending on | |
10460 | thread_count. | |
10461 | ||
10462 | Mistaking a random SIGTRAP for a breakpoint trap | |
10463 | causes similar symptoms (PC adjustment applied when | |
10464 | it shouldn't), but then again, playing with SIGTRAPs | |
10465 | behind the debugger's back is asking for trouble. | |
10466 | ||
10467 | Since hardware watchpoint traps are always | |
10468 | distinguishable from other traps, so we don't need to | |
10469 | apply keep hardware watchpoint moribund locations | |
10470 | around. We simply always ignore hardware watchpoint | |
10471 | traps we can no longer explain. */ | |
10472 | ||
876fa593 JK |
10473 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10474 | old_loc->owner = NULL; | |
20874c92 | 10475 | |
876fa593 | 10476 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10477 | } |
10478 | else | |
f431efe5 PA |
10479 | { |
10480 | old_loc->owner = NULL; | |
10481 | decref_bp_location (&old_loc); | |
10482 | } | |
20874c92 | 10483 | } |
74960c60 | 10484 | } |
1c5cfe86 | 10485 | |
348d480f PA |
10486 | /* Rescan breakpoints at the same address and section, marking the |
10487 | first one as "first" and any others as "duplicates". This is so | |
10488 | that the bpt instruction is only inserted once. If we have a | |
10489 | permanent breakpoint at the same place as BPT, make that one the | |
10490 | official one, and the rest as duplicates. Permanent breakpoints | |
10491 | are sorted first for the same address. | |
10492 | ||
10493 | Do the same for hardware watchpoints, but also considering the | |
10494 | watchpoint's type (regular/access/read) and length. */ | |
10495 | ||
10496 | bp_loc_first = NULL; | |
10497 | wp_loc_first = NULL; | |
10498 | awp_loc_first = NULL; | |
10499 | rwp_loc_first = NULL; | |
10500 | ALL_BP_LOCATIONS (loc, locp) | |
10501 | { | |
10502 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
10503 | non-NULL. */ | |
10504 | struct breakpoint *b = loc->owner; | |
10505 | struct bp_location **loc_first_p; | |
10506 | ||
10507 | if (b->enable_state == bp_disabled | |
10508 | || b->enable_state == bp_call_disabled | |
10509 | || b->enable_state == bp_startup_disabled | |
10510 | || !loc->enabled | |
10511 | || loc->shlib_disabled | |
10512 | || !breakpoint_address_is_meaningful (b) | |
10513 | || is_tracepoint (b)) | |
10514 | continue; | |
10515 | ||
10516 | /* Permanent breakpoint should always be inserted. */ | |
10517 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10518 | internal_error (__FILE__, __LINE__, | |
10519 | _("allegedly permanent breakpoint is not " | |
10520 | "actually inserted")); | |
10521 | ||
10522 | if (b->type == bp_hardware_watchpoint) | |
10523 | loc_first_p = &wp_loc_first; | |
10524 | else if (b->type == bp_read_watchpoint) | |
10525 | loc_first_p = &rwp_loc_first; | |
10526 | else if (b->type == bp_access_watchpoint) | |
10527 | loc_first_p = &awp_loc_first; | |
10528 | else | |
10529 | loc_first_p = &bp_loc_first; | |
10530 | ||
10531 | if (*loc_first_p == NULL | |
10532 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10533 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
10534 | { | |
10535 | *loc_first_p = loc; | |
10536 | loc->duplicate = 0; | |
10537 | continue; | |
10538 | } | |
10539 | ||
10540 | loc->duplicate = 1; | |
10541 | ||
10542 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted | |
10543 | && b->enable_state != bp_permanent) | |
10544 | internal_error (__FILE__, __LINE__, | |
10545 | _("another breakpoint was inserted on top of " | |
10546 | "a permanent breakpoint")); | |
10547 | } | |
10548 | ||
10549 | if (breakpoints_always_inserted_mode () && should_insert | |
10550 | && (have_live_inferiors () | |
10551 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
10552 | insert_breakpoint_locations (); | |
10553 | ||
10554 | do_cleanups (cleanups); | |
10555 | } | |
10556 | ||
10557 | void | |
10558 | breakpoint_retire_moribund (void) | |
10559 | { | |
10560 | struct bp_location *loc; | |
10561 | int ix; | |
10562 | ||
10563 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10564 | if (--(loc->events_till_retirement) == 0) | |
10565 | { | |
10566 | decref_bp_location (&loc); | |
10567 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
10568 | --ix; | |
10569 | } | |
10570 | } | |
10571 | ||
10572 | static void | |
10573 | update_global_location_list_nothrow (int inserting) | |
10574 | { | |
10575 | struct gdb_exception e; | |
10576 | ||
10577 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10578 | update_global_location_list (inserting); | |
10579 | } | |
10580 | ||
10581 | /* Clear BKP from a BPS. */ | |
10582 | ||
10583 | static void | |
10584 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
10585 | { | |
10586 | bpstat bs; | |
10587 | ||
10588 | for (bs = bps; bs; bs = bs->next) | |
10589 | if (bs->breakpoint_at == bpt) | |
10590 | { | |
10591 | bs->breakpoint_at = NULL; | |
10592 | bs->old_val = NULL; | |
10593 | /* bs->commands will be freed later. */ | |
10594 | } | |
10595 | } | |
10596 | ||
10597 | /* Callback for iterate_over_threads. */ | |
10598 | static int | |
10599 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
10600 | { | |
10601 | struct breakpoint *bpt = data; | |
10602 | ||
10603 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
10604 | return 0; | |
10605 | } | |
10606 | ||
10607 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
10608 | callbacks. */ | |
10609 | ||
10610 | static void | |
10611 | say_where (struct breakpoint *b) | |
10612 | { | |
10613 | struct value_print_options opts; | |
10614 | ||
10615 | get_user_print_options (&opts); | |
10616 | ||
10617 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
10618 | single string. */ | |
10619 | if (b->loc == NULL) | |
10620 | { | |
10621 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
10622 | } | |
10623 | else | |
10624 | { | |
10625 | if (opts.addressprint || b->source_file == NULL) | |
10626 | { | |
10627 | printf_filtered (" at "); | |
10628 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
10629 | gdb_stdout); | |
10630 | } | |
10631 | if (b->source_file) | |
10632 | printf_filtered (": file %s, line %d.", | |
10633 | b->source_file, b->line_number); | |
10634 | ||
10635 | if (b->loc->next) | |
10636 | { | |
10637 | struct bp_location *loc = b->loc; | |
10638 | int n = 0; | |
10639 | for (; loc; loc = loc->next) | |
10640 | ++n; | |
10641 | printf_filtered (" (%d locations)", n); | |
10642 | } | |
10643 | } | |
10644 | } | |
10645 | ||
348d480f PA |
10646 | /* Default bp_location_ops methods. */ |
10647 | ||
10648 | static void | |
10649 | bp_location_dtor (struct bp_location *self) | |
10650 | { | |
10651 | xfree (self->cond); | |
10652 | xfree (self->function_name); | |
10653 | } | |
10654 | ||
10655 | static const struct bp_location_ops bp_location_ops = | |
10656 | { | |
10657 | bp_location_dtor | |
10658 | }; | |
10659 | ||
2060206e PA |
10660 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
10661 | inherit from. */ | |
348d480f | 10662 | |
2060206e PA |
10663 | static void |
10664 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
10665 | { |
10666 | decref_counted_command_line (&self->commands); | |
10667 | xfree (self->cond_string); | |
348d480f PA |
10668 | xfree (self->addr_string); |
10669 | xfree (self->addr_string_range_end); | |
348d480f PA |
10670 | xfree (self->source_file); |
10671 | } | |
10672 | ||
2060206e PA |
10673 | static struct bp_location * |
10674 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
10675 | { |
10676 | struct bp_location *loc; | |
10677 | ||
10678 | loc = XNEW (struct bp_location); | |
10679 | init_bp_location (loc, &bp_location_ops, self); | |
10680 | return loc; | |
10681 | } | |
10682 | ||
2060206e PA |
10683 | static void |
10684 | base_breakpoint_re_set (struct breakpoint *b) | |
10685 | { | |
10686 | /* Nothing to re-set. */ | |
10687 | } | |
10688 | ||
10689 | #define internal_error_pure_virtual_called() \ | |
10690 | gdb_assert_not_reached ("pure virtual function called") | |
10691 | ||
10692 | static int | |
10693 | base_breakpoint_insert_location (struct bp_location *bl) | |
10694 | { | |
10695 | internal_error_pure_virtual_called (); | |
10696 | } | |
10697 | ||
10698 | static int | |
10699 | base_breakpoint_remove_location (struct bp_location *bl) | |
10700 | { | |
10701 | internal_error_pure_virtual_called (); | |
10702 | } | |
10703 | ||
10704 | static int | |
10705 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
10706 | struct address_space *aspace, | |
10707 | CORE_ADDR bp_addr) | |
10708 | { | |
10709 | internal_error_pure_virtual_called (); | |
10710 | } | |
10711 | ||
10712 | static void | |
10713 | base_breakpoint_check_status (bpstat bs) | |
10714 | { | |
10715 | /* Always stop. */ | |
10716 | } | |
10717 | ||
10718 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
10719 | errors. */ | |
10720 | ||
10721 | static int | |
10722 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
10723 | { | |
10724 | internal_error_pure_virtual_called (); | |
10725 | } | |
10726 | ||
10727 | /* A "resources_needed" breakpoint_ops method that just internal | |
10728 | errors. */ | |
10729 | ||
10730 | static int | |
10731 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
10732 | { | |
10733 | internal_error_pure_virtual_called (); | |
10734 | } | |
10735 | ||
10736 | static enum print_stop_action | |
10737 | base_breakpoint_print_it (bpstat bs) | |
10738 | { | |
10739 | internal_error_pure_virtual_called (); | |
10740 | } | |
10741 | ||
10742 | static void | |
10743 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
10744 | struct ui_out *uiout) | |
10745 | { | |
10746 | /* nothing */ | |
10747 | } | |
10748 | ||
10749 | static void | |
10750 | base_breakpoint_print_mention (struct breakpoint *b) | |
10751 | { | |
10752 | internal_error_pure_virtual_called (); | |
10753 | } | |
10754 | ||
10755 | static void | |
10756 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
10757 | { | |
10758 | internal_error_pure_virtual_called (); | |
10759 | } | |
10760 | ||
10761 | static struct breakpoint_ops base_breakpoint_ops = | |
10762 | { | |
10763 | base_breakpoint_dtor, | |
10764 | base_breakpoint_allocate_location, | |
10765 | base_breakpoint_re_set, | |
10766 | base_breakpoint_insert_location, | |
10767 | base_breakpoint_remove_location, | |
10768 | base_breakpoint_breakpoint_hit, | |
10769 | base_breakpoint_check_status, | |
10770 | base_breakpoint_resources_needed, | |
10771 | base_breakpoint_works_in_software_mode, | |
10772 | base_breakpoint_print_it, | |
10773 | NULL, | |
10774 | base_breakpoint_print_one_detail, | |
10775 | base_breakpoint_print_mention, | |
10776 | base_breakpoint_print_recreate | |
10777 | }; | |
10778 | ||
10779 | /* Default breakpoint_ops methods. */ | |
10780 | ||
10781 | static void | |
348d480f PA |
10782 | bkpt_re_set (struct breakpoint *b) |
10783 | { | |
06edf0c0 PA |
10784 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10785 | if (b->enable_state == bp_startup_disabled) | |
10786 | return; | |
348d480f | 10787 | |
06edf0c0 PA |
10788 | /* FIXME: is this still reachable? */ |
10789 | if (b->addr_string == NULL) | |
10790 | { | |
10791 | /* Anything without a string can't be re-set. */ | |
348d480f | 10792 | delete_breakpoint (b); |
06edf0c0 | 10793 | return; |
348d480f | 10794 | } |
06edf0c0 PA |
10795 | |
10796 | breakpoint_re_set_default (b); | |
348d480f PA |
10797 | } |
10798 | ||
2060206e | 10799 | static int |
348d480f PA |
10800 | bkpt_insert_location (struct bp_location *bl) |
10801 | { | |
10802 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10803 | return target_insert_hw_breakpoint (bl->gdbarch, | |
10804 | &bl->target_info); | |
10805 | else | |
10806 | return target_insert_breakpoint (bl->gdbarch, | |
10807 | &bl->target_info); | |
10808 | } | |
10809 | ||
2060206e | 10810 | static int |
348d480f PA |
10811 | bkpt_remove_location (struct bp_location *bl) |
10812 | { | |
10813 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10814 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
10815 | else | |
10816 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
10817 | } | |
10818 | ||
2060206e | 10819 | static int |
348d480f PA |
10820 | bkpt_breakpoint_hit (const struct bp_location *bl, |
10821 | struct address_space *aspace, CORE_ADDR bp_addr) | |
10822 | { | |
10823 | struct breakpoint *b = bl->owner; | |
10824 | ||
10825 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, | |
10826 | aspace, bp_addr)) | |
10827 | return 0; | |
10828 | ||
10829 | if (overlay_debugging /* unmapped overlay section */ | |
10830 | && section_is_overlay (bl->section) | |
10831 | && !section_is_mapped (bl->section)) | |
10832 | return 0; | |
10833 | ||
10834 | return 1; | |
10835 | } | |
10836 | ||
2060206e | 10837 | static int |
348d480f PA |
10838 | bkpt_resources_needed (const struct bp_location *bl) |
10839 | { | |
10840 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
10841 | ||
10842 | return 1; | |
10843 | } | |
10844 | ||
2060206e | 10845 | static enum print_stop_action |
348d480f PA |
10846 | bkpt_print_it (bpstat bs) |
10847 | { | |
348d480f PA |
10848 | struct breakpoint *b; |
10849 | const struct bp_location *bl; | |
001c8c33 | 10850 | int bp_temp; |
348d480f PA |
10851 | |
10852 | gdb_assert (bs->bp_location_at != NULL); | |
10853 | ||
10854 | bl = bs->bp_location_at; | |
10855 | b = bs->breakpoint_at; | |
10856 | ||
001c8c33 PA |
10857 | bp_temp = b->disposition == disp_del; |
10858 | if (bl->address != bl->requested_address) | |
10859 | breakpoint_adjustment_warning (bl->requested_address, | |
10860 | bl->address, | |
10861 | b->number, 1); | |
10862 | annotate_breakpoint (b->number); | |
10863 | if (bp_temp) | |
10864 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
10865 | else | |
10866 | ui_out_text (uiout, "\nBreakpoint "); | |
10867 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 10868 | { |
001c8c33 PA |
10869 | ui_out_field_string (uiout, "reason", |
10870 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10871 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 10872 | } |
001c8c33 PA |
10873 | ui_out_field_int (uiout, "bkptno", b->number); |
10874 | ui_out_text (uiout, ", "); | |
06edf0c0 | 10875 | |
001c8c33 | 10876 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
10877 | } |
10878 | ||
2060206e | 10879 | static void |
06edf0c0 PA |
10880 | bkpt_print_mention (struct breakpoint *b) |
10881 | { | |
10882 | if (ui_out_is_mi_like_p (uiout)) | |
10883 | return; | |
10884 | ||
10885 | switch (b->type) | |
10886 | { | |
10887 | case bp_breakpoint: | |
10888 | case bp_gnu_ifunc_resolver: | |
10889 | if (b->disposition == disp_del) | |
10890 | printf_filtered (_("Temporary breakpoint")); | |
10891 | else | |
10892 | printf_filtered (_("Breakpoint")); | |
10893 | printf_filtered (_(" %d"), b->number); | |
10894 | if (b->type == bp_gnu_ifunc_resolver) | |
10895 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
10896 | break; | |
10897 | case bp_hardware_breakpoint: | |
10898 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
10899 | break; | |
10900 | } | |
10901 | ||
10902 | say_where (b); | |
10903 | } | |
10904 | ||
2060206e | 10905 | static void |
06edf0c0 PA |
10906 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
10907 | { | |
10908 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
10909 | fprintf_unfiltered (fp, "tbreak"); | |
10910 | else if (tp->type == bp_breakpoint) | |
10911 | fprintf_unfiltered (fp, "break"); | |
10912 | else if (tp->type == bp_hardware_breakpoint | |
10913 | && tp->disposition == disp_del) | |
10914 | fprintf_unfiltered (fp, "thbreak"); | |
10915 | else if (tp->type == bp_hardware_breakpoint) | |
10916 | fprintf_unfiltered (fp, "hbreak"); | |
10917 | else | |
10918 | internal_error (__FILE__, __LINE__, | |
10919 | _("unhandled breakpoint type %d"), (int) tp->type); | |
10920 | ||
2060206e | 10921 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
06edf0c0 PA |
10922 | } |
10923 | ||
06edf0c0 PA |
10924 | /* Virtual table for internal breakpoints. */ |
10925 | ||
10926 | static void | |
10927 | internal_bkpt_re_set (struct breakpoint *b) | |
10928 | { | |
10929 | switch (b->type) | |
10930 | { | |
10931 | /* Delete overlay event and longjmp master breakpoints; they | |
10932 | will be reset later by breakpoint_re_set. */ | |
10933 | case bp_overlay_event: | |
10934 | case bp_longjmp_master: | |
10935 | case bp_std_terminate_master: | |
10936 | case bp_exception_master: | |
10937 | delete_breakpoint (b); | |
10938 | break; | |
10939 | ||
10940 | /* This breakpoint is special, it's set up when the inferior | |
10941 | starts and we really don't want to touch it. */ | |
10942 | case bp_shlib_event: | |
10943 | ||
10944 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
10945 | it is set up, we do not want to touch it. */ | |
10946 | case bp_thread_event: | |
10947 | break; | |
10948 | } | |
10949 | } | |
10950 | ||
10951 | static void | |
10952 | internal_bkpt_check_status (bpstat bs) | |
10953 | { | |
10954 | /* We do not stop for these. */ | |
10955 | bs->stop = 0; | |
10956 | } | |
10957 | ||
10958 | static enum print_stop_action | |
10959 | internal_bkpt_print_it (bpstat bs) | |
10960 | { | |
06edf0c0 | 10961 | struct breakpoint *b; |
06edf0c0 | 10962 | |
06edf0c0 PA |
10963 | b = bs->breakpoint_at; |
10964 | ||
06edf0c0 PA |
10965 | switch (b->type) |
10966 | { | |
348d480f PA |
10967 | case bp_shlib_event: |
10968 | /* Did we stop because the user set the stop_on_solib_events | |
10969 | variable? (If so, we report this as a generic, "Stopped due | |
10970 | to shlib event" message.) */ | |
10971 | printf_filtered (_("Stopped due to shared library event\n")); | |
348d480f PA |
10972 | break; |
10973 | ||
10974 | case bp_thread_event: | |
10975 | /* Not sure how we will get here. | |
10976 | GDB should not stop for these breakpoints. */ | |
10977 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
10978 | break; |
10979 | ||
10980 | case bp_overlay_event: | |
10981 | /* By analogy with the thread event, GDB should not stop for these. */ | |
10982 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
10983 | break; |
10984 | ||
10985 | case bp_longjmp_master: | |
10986 | /* These should never be enabled. */ | |
10987 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
10988 | break; |
10989 | ||
10990 | case bp_std_terminate_master: | |
10991 | /* These should never be enabled. */ | |
10992 | printf_filtered (_("std::terminate Master Breakpoint: " | |
10993 | "gdb should not stop!\n")); | |
348d480f PA |
10994 | break; |
10995 | ||
10996 | case bp_exception_master: | |
10997 | /* These should never be enabled. */ | |
10998 | printf_filtered (_("Exception Master Breakpoint: " | |
10999 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11000 | break; |
11001 | } | |
11002 | ||
001c8c33 | 11003 | return PRINT_NOTHING; |
06edf0c0 PA |
11004 | } |
11005 | ||
11006 | static void | |
11007 | internal_bkpt_print_mention (struct breakpoint *b) | |
11008 | { | |
11009 | /* Nothing to mention. These breakpoints are internal. */ | |
11010 | } | |
11011 | ||
06edf0c0 PA |
11012 | /* Virtual table for momentary breakpoints */ |
11013 | ||
11014 | static void | |
11015 | momentary_bkpt_re_set (struct breakpoint *b) | |
11016 | { | |
11017 | /* Keep temporary breakpoints, which can be encountered when we step | |
11018 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
11019 | Otherwise these should have been blown away via the cleanup chain | |
11020 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11021 | } | |
11022 | ||
11023 | static void | |
11024 | momentary_bkpt_check_status (bpstat bs) | |
11025 | { | |
11026 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11027 | } | |
11028 | ||
11029 | static enum print_stop_action | |
11030 | momentary_bkpt_print_it (bpstat bs) | |
11031 | { | |
001c8c33 | 11032 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 11033 | { |
001c8c33 | 11034 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 11035 | |
001c8c33 PA |
11036 | switch (b->type) |
11037 | { | |
11038 | case bp_finish: | |
11039 | ui_out_field_string | |
11040 | (uiout, "reason", | |
11041 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
11042 | break; | |
348d480f | 11043 | |
001c8c33 PA |
11044 | case bp_until: |
11045 | ui_out_field_string | |
11046 | (uiout, "reason", | |
11047 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
11048 | break; | |
11049 | } | |
348d480f PA |
11050 | } |
11051 | ||
001c8c33 | 11052 | return PRINT_UNKNOWN; |
348d480f PA |
11053 | } |
11054 | ||
06edf0c0 PA |
11055 | static void |
11056 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 11057 | { |
06edf0c0 | 11058 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11059 | } |
11060 | ||
348d480f | 11061 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 11062 | |
348d480f PA |
11063 | static void |
11064 | tracepoint_re_set (struct breakpoint *b) | |
11065 | { | |
11066 | breakpoint_re_set_default (b); | |
11067 | } | |
876fa593 | 11068 | |
348d480f PA |
11069 | static int |
11070 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
11071 | struct address_space *aspace, CORE_ADDR bp_addr) | |
11072 | { | |
11073 | /* By definition, the inferior does not report stops at | |
11074 | tracepoints. */ | |
11075 | return 0; | |
74960c60 VP |
11076 | } |
11077 | ||
11078 | static void | |
348d480f PA |
11079 | tracepoint_print_one_detail (const struct breakpoint *self, |
11080 | struct ui_out *uiout) | |
74960c60 | 11081 | { |
d9b3f62e PA |
11082 | struct tracepoint *tp = (struct tracepoint *) self; |
11083 | if (tp->static_trace_marker_id) | |
348d480f PA |
11084 | { |
11085 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 11086 | |
348d480f PA |
11087 | ui_out_text (uiout, "\tmarker id is "); |
11088 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 11089 | tp->static_trace_marker_id); |
348d480f PA |
11090 | ui_out_text (uiout, "\n"); |
11091 | } | |
0d381245 VP |
11092 | } |
11093 | ||
a474d7c2 | 11094 | static void |
348d480f | 11095 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 11096 | { |
348d480f PA |
11097 | if (ui_out_is_mi_like_p (uiout)) |
11098 | return; | |
cc59ec59 | 11099 | |
348d480f PA |
11100 | switch (b->type) |
11101 | { | |
11102 | case bp_tracepoint: | |
11103 | printf_filtered (_("Tracepoint")); | |
11104 | printf_filtered (_(" %d"), b->number); | |
11105 | break; | |
11106 | case bp_fast_tracepoint: | |
11107 | printf_filtered (_("Fast tracepoint")); | |
11108 | printf_filtered (_(" %d"), b->number); | |
11109 | break; | |
11110 | case bp_static_tracepoint: | |
11111 | printf_filtered (_("Static tracepoint")); | |
11112 | printf_filtered (_(" %d"), b->number); | |
11113 | break; | |
11114 | default: | |
11115 | internal_error (__FILE__, __LINE__, | |
11116 | _("unhandled tracepoint type %d"), (int) b->type); | |
11117 | } | |
11118 | ||
11119 | say_where (b); | |
a474d7c2 PA |
11120 | } |
11121 | ||
348d480f | 11122 | static void |
d9b3f62e | 11123 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 11124 | { |
d9b3f62e PA |
11125 | struct tracepoint *tp = (struct tracepoint *) self; |
11126 | ||
11127 | if (self->type == bp_fast_tracepoint) | |
348d480f | 11128 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 11129 | if (self->type == bp_static_tracepoint) |
348d480f | 11130 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 11131 | else if (self->type == bp_tracepoint) |
348d480f PA |
11132 | fprintf_unfiltered (fp, "trace"); |
11133 | else | |
11134 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 11135 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 11136 | |
d9b3f62e PA |
11137 | fprintf_unfiltered (fp, " %s", self->addr_string); |
11138 | print_recreate_thread (self, fp); | |
11139 | ||
11140 | if (tp->pass_count) | |
11141 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
11142 | } |
11143 | ||
2060206e | 11144 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 11145 | |
53a5351d | 11146 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 11147 | structures. */ |
c906108c SS |
11148 | |
11149 | void | |
fba45db2 | 11150 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 11151 | { |
52f0bd74 | 11152 | struct breakpoint *b; |
c906108c | 11153 | |
8a3fe4f8 | 11154 | gdb_assert (bpt != NULL); |
c906108c | 11155 | |
4a64f543 MS |
11156 | /* Has this bp already been deleted? This can happen because |
11157 | multiple lists can hold pointers to bp's. bpstat lists are | |
11158 | especial culprits. | |
11159 | ||
11160 | One example of this happening is a watchpoint's scope bp. When | |
11161 | the scope bp triggers, we notice that the watchpoint is out of | |
11162 | scope, and delete it. We also delete its scope bp. But the | |
11163 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
11164 | That bpstat is then checked for auto-deleting bp's, which are | |
11165 | deleted. | |
11166 | ||
11167 | A real solution to this problem might involve reference counts in | |
11168 | bp's, and/or giving them pointers back to their referencing | |
11169 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
11170 | storage when no more references were extent. A cheaper bandaid | |
11171 | was chosen. */ | |
c906108c SS |
11172 | if (bpt->type == bp_none) |
11173 | return; | |
11174 | ||
4a64f543 MS |
11175 | /* At least avoid this stale reference until the reference counting |
11176 | of breakpoints gets resolved. */ | |
d0fb5eae | 11177 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 11178 | { |
d0fb5eae | 11179 | struct breakpoint *related; |
3a5c3e22 | 11180 | struct watchpoint *w; |
d0fb5eae JK |
11181 | |
11182 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 11183 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 11184 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
11185 | w = (struct watchpoint *) bpt; |
11186 | else | |
11187 | w = NULL; | |
11188 | if (w != NULL) | |
11189 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
11190 | |
11191 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
11192 | for (related = bpt; related->related_breakpoint != bpt; | |
11193 | related = related->related_breakpoint); | |
11194 | related->related_breakpoint = bpt->related_breakpoint; | |
11195 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
11196 | } |
11197 | ||
a9634178 TJB |
11198 | /* watch_command_1 creates a watchpoint but only sets its number if |
11199 | update_watchpoint succeeds in creating its bp_locations. If there's | |
11200 | a problem in that process, we'll be asked to delete the half-created | |
11201 | watchpoint. In that case, don't announce the deletion. */ | |
11202 | if (bpt->number) | |
11203 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 11204 | |
c906108c SS |
11205 | if (breakpoint_chain == bpt) |
11206 | breakpoint_chain = bpt->next; | |
11207 | ||
c906108c SS |
11208 | ALL_BREAKPOINTS (b) |
11209 | if (b->next == bpt) | |
c5aa993b JM |
11210 | { |
11211 | b->next = bpt->next; | |
11212 | break; | |
11213 | } | |
c906108c | 11214 | |
f431efe5 PA |
11215 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
11216 | been freed. */ | |
11217 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 11218 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
11219 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
11220 | commands are associated with the bpstat; if we remove it here, | |
11221 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
11222 | event-top.c won't do anything, and temporary breakpoints with | |
11223 | commands won't work. */ | |
11224 | ||
11225 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
11226 | ||
4a64f543 MS |
11227 | /* Now that breakpoint is removed from breakpoint list, update the |
11228 | global location list. This will remove locations that used to | |
11229 | belong to this breakpoint. Do this before freeing the breakpoint | |
11230 | itself, since remove_breakpoint looks at location's owner. It | |
11231 | might be better design to have location completely | |
11232 | self-contained, but it's not the case now. */ | |
b60e7edf | 11233 | update_global_location_list (0); |
74960c60 | 11234 | |
348d480f | 11235 | bpt->ops->dtor (bpt); |
4a64f543 MS |
11236 | /* On the chance that someone will soon try again to delete this |
11237 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 11238 | bpt->type = bp_none; |
b8c9b27d | 11239 | xfree (bpt); |
c906108c SS |
11240 | } |
11241 | ||
4d6140d9 AC |
11242 | static void |
11243 | do_delete_breakpoint_cleanup (void *b) | |
11244 | { | |
11245 | delete_breakpoint (b); | |
11246 | } | |
11247 | ||
11248 | struct cleanup * | |
11249 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
11250 | { | |
11251 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
11252 | } | |
11253 | ||
51be5b68 PA |
11254 | /* Iterator function to call a user-provided callback function once |
11255 | for each of B and its related breakpoints. */ | |
11256 | ||
11257 | static void | |
11258 | iterate_over_related_breakpoints (struct breakpoint *b, | |
11259 | void (*function) (struct breakpoint *, | |
11260 | void *), | |
11261 | void *data) | |
11262 | { | |
11263 | struct breakpoint *related; | |
11264 | ||
11265 | related = b; | |
11266 | do | |
11267 | { | |
11268 | struct breakpoint *next; | |
11269 | ||
11270 | /* FUNCTION may delete RELATED. */ | |
11271 | next = related->related_breakpoint; | |
11272 | ||
11273 | if (next == related) | |
11274 | { | |
11275 | /* RELATED is the last ring entry. */ | |
11276 | function (related, data); | |
11277 | ||
11278 | /* FUNCTION may have deleted it, so we'd never reach back to | |
11279 | B. There's nothing left to do anyway, so just break | |
11280 | out. */ | |
11281 | break; | |
11282 | } | |
11283 | else | |
11284 | function (related, data); | |
11285 | ||
11286 | related = next; | |
11287 | } | |
11288 | while (related != b); | |
11289 | } | |
95a42b64 TT |
11290 | |
11291 | static void | |
11292 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11293 | { | |
11294 | delete_breakpoint (b); | |
11295 | } | |
11296 | ||
51be5b68 PA |
11297 | /* A callback for map_breakpoint_numbers that calls |
11298 | delete_breakpoint. */ | |
11299 | ||
11300 | static void | |
11301 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11302 | { | |
11303 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
11304 | } | |
11305 | ||
c906108c | 11306 | void |
fba45db2 | 11307 | delete_command (char *arg, int from_tty) |
c906108c | 11308 | { |
35df4500 | 11309 | struct breakpoint *b, *b_tmp; |
c906108c | 11310 | |
ea9365bb TT |
11311 | dont_repeat (); |
11312 | ||
c906108c SS |
11313 | if (arg == 0) |
11314 | { | |
11315 | int breaks_to_delete = 0; | |
11316 | ||
46c6471b PA |
11317 | /* Delete all breakpoints if no argument. Do not delete |
11318 | internal breakpoints, these have to be deleted with an | |
11319 | explicit breakpoint number argument. */ | |
c5aa993b | 11320 | ALL_BREAKPOINTS (b) |
46c6471b | 11321 | if (user_breakpoint_p (b)) |
973d738b DJ |
11322 | { |
11323 | breaks_to_delete = 1; | |
11324 | break; | |
11325 | } | |
c906108c SS |
11326 | |
11327 | /* Ask user only if there are some breakpoints to delete. */ | |
11328 | if (!from_tty | |
e2e0b3e5 | 11329 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 11330 | { |
35df4500 | 11331 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 11332 | if (user_breakpoint_p (b)) |
c5aa993b | 11333 | delete_breakpoint (b); |
c906108c SS |
11334 | } |
11335 | } | |
11336 | else | |
51be5b68 | 11337 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
11338 | } |
11339 | ||
0d381245 VP |
11340 | static int |
11341 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 11342 | { |
0d381245 VP |
11343 | for (; loc; loc = loc->next) |
11344 | if (!loc->shlib_disabled) | |
11345 | return 0; | |
11346 | return 1; | |
fe3f5fa8 VP |
11347 | } |
11348 | ||
776592bf DE |
11349 | /* Subroutine of update_breakpoint_locations to simplify it. |
11350 | Return non-zero if multiple fns in list LOC have the same name. | |
11351 | Null names are ignored. */ | |
11352 | ||
11353 | static int | |
11354 | ambiguous_names_p (struct bp_location *loc) | |
11355 | { | |
11356 | struct bp_location *l; | |
11357 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
11358 | (int (*) (const void *, |
11359 | const void *)) streq, | |
776592bf DE |
11360 | NULL, xcalloc, xfree); |
11361 | ||
11362 | for (l = loc; l != NULL; l = l->next) | |
11363 | { | |
11364 | const char **slot; | |
11365 | const char *name = l->function_name; | |
11366 | ||
11367 | /* Allow for some names to be NULL, ignore them. */ | |
11368 | if (name == NULL) | |
11369 | continue; | |
11370 | ||
11371 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
11372 | INSERT); | |
4a64f543 MS |
11373 | /* NOTE: We can assume slot != NULL here because xcalloc never |
11374 | returns NULL. */ | |
776592bf DE |
11375 | if (*slot != NULL) |
11376 | { | |
11377 | htab_delete (htab); | |
11378 | return 1; | |
11379 | } | |
11380 | *slot = name; | |
11381 | } | |
11382 | ||
11383 | htab_delete (htab); | |
11384 | return 0; | |
11385 | } | |
11386 | ||
0fb4aa4b PA |
11387 | /* When symbols change, it probably means the sources changed as well, |
11388 | and it might mean the static tracepoint markers are no longer at | |
11389 | the same address or line numbers they used to be at last we | |
11390 | checked. Losing your static tracepoints whenever you rebuild is | |
11391 | undesirable. This function tries to resync/rematch gdb static | |
11392 | tracepoints with the markers on the target, for static tracepoints | |
11393 | that have not been set by marker id. Static tracepoint that have | |
11394 | been set by marker id are reset by marker id in breakpoint_re_set. | |
11395 | The heuristic is: | |
11396 | ||
11397 | 1) For a tracepoint set at a specific address, look for a marker at | |
11398 | the old PC. If one is found there, assume to be the same marker. | |
11399 | If the name / string id of the marker found is different from the | |
11400 | previous known name, assume that means the user renamed the marker | |
11401 | in the sources, and output a warning. | |
11402 | ||
11403 | 2) For a tracepoint set at a given line number, look for a marker | |
11404 | at the new address of the old line number. If one is found there, | |
11405 | assume to be the same marker. If the name / string id of the | |
11406 | marker found is different from the previous known name, assume that | |
11407 | means the user renamed the marker in the sources, and output a | |
11408 | warning. | |
11409 | ||
11410 | 3) If a marker is no longer found at the same address or line, it | |
11411 | may mean the marker no longer exists. But it may also just mean | |
11412 | the code changed a bit. Maybe the user added a few lines of code | |
11413 | that made the marker move up or down (in line number terms). Ask | |
11414 | the target for info about the marker with the string id as we knew | |
11415 | it. If found, update line number and address in the matching | |
11416 | static tracepoint. This will get confused if there's more than one | |
11417 | marker with the same ID (possible in UST, although unadvised | |
11418 | precisely because it confuses tools). */ | |
11419 | ||
11420 | static struct symtab_and_line | |
11421 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
11422 | { | |
d9b3f62e | 11423 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
11424 | struct static_tracepoint_marker marker; |
11425 | CORE_ADDR pc; | |
11426 | int i; | |
11427 | ||
11428 | pc = sal.pc; | |
11429 | if (sal.line) | |
11430 | find_line_pc (sal.symtab, sal.line, &pc); | |
11431 | ||
11432 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
11433 | { | |
d9b3f62e | 11434 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
11435 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
11436 | b->number, | |
d9b3f62e | 11437 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 11438 | |
d9b3f62e PA |
11439 | xfree (tp->static_trace_marker_id); |
11440 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
11441 | release_static_tracepoint_marker (&marker); |
11442 | ||
11443 | return sal; | |
11444 | } | |
11445 | ||
11446 | /* Old marker wasn't found on target at lineno. Try looking it up | |
11447 | by string ID. */ | |
11448 | if (!sal.explicit_pc | |
11449 | && sal.line != 0 | |
11450 | && sal.symtab != NULL | |
d9b3f62e | 11451 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
11452 | { |
11453 | VEC(static_tracepoint_marker_p) *markers; | |
11454 | ||
11455 | markers | |
d9b3f62e | 11456 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
11457 | |
11458 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
11459 | { | |
11460 | struct symtab_and_line sal; | |
11461 | struct symbol *sym; | |
11462 | struct static_tracepoint_marker *marker; | |
11463 | ||
11464 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
11465 | ||
d9b3f62e PA |
11466 | xfree (tp->static_trace_marker_id); |
11467 | tp->static_trace_marker_id = xstrdup (marker->str_id); | |
0fb4aa4b PA |
11468 | |
11469 | warning (_("marker for static tracepoint %d (%s) not " | |
11470 | "found at previous line number"), | |
d9b3f62e | 11471 | b->number, tp->static_trace_marker_id); |
0fb4aa4b PA |
11472 | |
11473 | init_sal (&sal); | |
11474 | ||
11475 | sal.pc = marker->address; | |
11476 | ||
11477 | sal = find_pc_line (marker->address, 0); | |
11478 | sym = find_pc_sect_function (marker->address, NULL); | |
11479 | ui_out_text (uiout, "Now in "); | |
11480 | if (sym) | |
11481 | { | |
11482 | ui_out_field_string (uiout, "func", | |
11483 | SYMBOL_PRINT_NAME (sym)); | |
11484 | ui_out_text (uiout, " at "); | |
11485 | } | |
11486 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
11487 | ui_out_text (uiout, ":"); | |
11488 | ||
11489 | if (ui_out_is_mi_like_p (uiout)) | |
11490 | { | |
11491 | char *fullname = symtab_to_fullname (sal.symtab); | |
11492 | ||
11493 | if (fullname) | |
11494 | ui_out_field_string (uiout, "fullname", fullname); | |
11495 | } | |
11496 | ||
11497 | ui_out_field_int (uiout, "line", sal.line); | |
11498 | ui_out_text (uiout, "\n"); | |
11499 | ||
11500 | b->line_number = sal.line; | |
11501 | ||
11502 | xfree (b->source_file); | |
11503 | if (sym) | |
11504 | b->source_file = xstrdup (sal.symtab->filename); | |
11505 | else | |
11506 | b->source_file = NULL; | |
11507 | ||
11508 | xfree (b->addr_string); | |
11509 | b->addr_string = xstrprintf ("%s:%d", | |
11510 | sal.symtab->filename, b->line_number); | |
11511 | ||
11512 | /* Might be nice to check if function changed, and warn if | |
11513 | so. */ | |
11514 | ||
11515 | release_static_tracepoint_marker (marker); | |
11516 | } | |
11517 | } | |
11518 | return sal; | |
11519 | } | |
11520 | ||
8d3788bd VP |
11521 | /* Returns 1 iff locations A and B are sufficiently same that |
11522 | we don't need to report breakpoint as changed. */ | |
11523 | ||
11524 | static int | |
11525 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
11526 | { | |
11527 | while (a && b) | |
11528 | { | |
11529 | if (a->address != b->address) | |
11530 | return 0; | |
11531 | ||
11532 | if (a->shlib_disabled != b->shlib_disabled) | |
11533 | return 0; | |
11534 | ||
11535 | if (a->enabled != b->enabled) | |
11536 | return 0; | |
11537 | ||
11538 | a = a->next; | |
11539 | b = b->next; | |
11540 | } | |
11541 | ||
11542 | if ((a == NULL) != (b == NULL)) | |
11543 | return 0; | |
11544 | ||
11545 | return 1; | |
11546 | } | |
11547 | ||
f1310107 TJB |
11548 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
11549 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
11550 | a ranged breakpoint. */ | |
11551 | ||
0e30163f | 11552 | void |
0d381245 | 11553 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
11554 | struct symtabs_and_lines sals, |
11555 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
11556 | { |
11557 | int i; | |
0d381245 VP |
11558 | struct bp_location *existing_locations = b->loc; |
11559 | ||
f1310107 TJB |
11560 | /* Ranged breakpoints have only one start location and one end location. */ |
11561 | gdb_assert (sals_end.nelts == 0 || (sals.nelts == 1 && sals_end.nelts == 1)); | |
11562 | ||
4a64f543 MS |
11563 | /* If there's no new locations, and all existing locations are |
11564 | pending, don't do anything. This optimizes the common case where | |
11565 | all locations are in the same shared library, that was unloaded. | |
11566 | We'd like to retain the location, so that when the library is | |
11567 | loaded again, we don't loose the enabled/disabled status of the | |
11568 | individual locations. */ | |
0d381245 | 11569 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
11570 | return; |
11571 | ||
fe3f5fa8 VP |
11572 | b->loc = NULL; |
11573 | ||
0d381245 | 11574 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 11575 | { |
0d381245 | 11576 | struct bp_location *new_loc = |
39d61571 | 11577 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 11578 | |
0d381245 VP |
11579 | /* Reparse conditions, they might contain references to the |
11580 | old symtab. */ | |
11581 | if (b->cond_string != NULL) | |
11582 | { | |
f1310107 | 11583 | char *s; |
0d381245 | 11584 | struct gdb_exception e; |
fe3f5fa8 | 11585 | |
0d381245 VP |
11586 | s = b->cond_string; |
11587 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11588 | { | |
11589 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
11590 | 0); | |
11591 | } | |
11592 | if (e.reason < 0) | |
11593 | { | |
3e43a32a MS |
11594 | warning (_("failed to reevaluate condition " |
11595 | "for breakpoint %d: %s"), | |
0d381245 VP |
11596 | b->number, e.message); |
11597 | new_loc->enabled = 0; | |
11598 | } | |
11599 | } | |
fe3f5fa8 | 11600 | |
0d381245 VP |
11601 | if (b->source_file != NULL) |
11602 | xfree (b->source_file); | |
11603 | if (sals.sals[i].symtab == NULL) | |
11604 | b->source_file = NULL; | |
11605 | else | |
1b36a34b | 11606 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 11607 | |
0d381245 VP |
11608 | if (b->line_number == 0) |
11609 | b->line_number = sals.sals[i].line; | |
f1310107 TJB |
11610 | |
11611 | if (sals_end.nelts) | |
11612 | { | |
11613 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
11614 | ||
11615 | new_loc->length = end - sals.sals[0].pc + 1; | |
11616 | } | |
0d381245 | 11617 | } |
fe3f5fa8 | 11618 | |
514f746b AR |
11619 | /* Update locations of permanent breakpoints. */ |
11620 | if (b->enable_state == bp_permanent) | |
11621 | make_breakpoint_permanent (b); | |
11622 | ||
4a64f543 MS |
11623 | /* If possible, carry over 'disable' status from existing |
11624 | breakpoints. */ | |
0d381245 VP |
11625 | { |
11626 | struct bp_location *e = existing_locations; | |
776592bf DE |
11627 | /* If there are multiple breakpoints with the same function name, |
11628 | e.g. for inline functions, comparing function names won't work. | |
11629 | Instead compare pc addresses; this is just a heuristic as things | |
11630 | may have moved, but in practice it gives the correct answer | |
11631 | often enough until a better solution is found. */ | |
11632 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
11633 | ||
0d381245 VP |
11634 | for (; e; e = e->next) |
11635 | { | |
11636 | if (!e->enabled && e->function_name) | |
11637 | { | |
11638 | struct bp_location *l = b->loc; | |
776592bf DE |
11639 | if (have_ambiguous_names) |
11640 | { | |
11641 | for (; l; l = l->next) | |
f1310107 | 11642 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
11643 | { |
11644 | l->enabled = 0; | |
11645 | break; | |
11646 | } | |
11647 | } | |
11648 | else | |
11649 | { | |
11650 | for (; l; l = l->next) | |
11651 | if (l->function_name | |
11652 | && strcmp (e->function_name, l->function_name) == 0) | |
11653 | { | |
11654 | l->enabled = 0; | |
11655 | break; | |
11656 | } | |
11657 | } | |
0d381245 VP |
11658 | } |
11659 | } | |
11660 | } | |
fe3f5fa8 | 11661 | |
8d3788bd VP |
11662 | if (!locations_are_equal (existing_locations, b->loc)) |
11663 | observer_notify_breakpoint_modified (b); | |
11664 | ||
b60e7edf | 11665 | update_global_location_list (1); |
fe3f5fa8 VP |
11666 | } |
11667 | ||
ef23e705 TJB |
11668 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
11669 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
11670 | ||
11671 | static struct symtabs_and_lines | |
11672 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
11673 | { | |
11674 | char *s; | |
58438ac1 | 11675 | int marker_spec; |
02d20e4a | 11676 | struct symtabs_and_lines sals = {0}; |
ef23e705 TJB |
11677 | struct gdb_exception e; |
11678 | ||
11679 | s = addr_string; | |
11680 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
11681 | ||
11682 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11683 | { | |
11684 | if (marker_spec) | |
11685 | { | |
d9b3f62e PA |
11686 | struct tracepoint *tp = (struct tracepoint *) b; |
11687 | ||
ef23e705 | 11688 | sals = decode_static_tracepoint_spec (&s); |
d9b3f62e | 11689 | if (sals.nelts > tp->static_trace_marker_id_idx) |
ef23e705 | 11690 | { |
d9b3f62e | 11691 | sals.sals[0] = sals.sals[tp->static_trace_marker_id_idx]; |
ef23e705 TJB |
11692 | sals.nelts = 1; |
11693 | } | |
11694 | else | |
d9b3f62e | 11695 | error (_("marker %s not found"), tp->static_trace_marker_id); |
ef23e705 TJB |
11696 | } |
11697 | else | |
58438ac1 | 11698 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, NULL); |
ef23e705 TJB |
11699 | } |
11700 | if (e.reason < 0) | |
11701 | { | |
11702 | int not_found_and_ok = 0; | |
11703 | /* For pending breakpoints, it's expected that parsing will | |
11704 | fail until the right shared library is loaded. User has | |
11705 | already told to create pending breakpoints and don't need | |
11706 | extra messages. If breakpoint is in bp_shlib_disabled | |
11707 | state, then user already saw the message about that | |
11708 | breakpoint being disabled, and don't want to see more | |
11709 | errors. */ | |
58438ac1 | 11710 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
11711 | && (b->condition_not_parsed |
11712 | || (b->loc && b->loc->shlib_disabled) | |
11713 | || b->enable_state == bp_disabled)) | |
11714 | not_found_and_ok = 1; | |
11715 | ||
11716 | if (!not_found_and_ok) | |
11717 | { | |
11718 | /* We surely don't want to warn about the same breakpoint | |
11719 | 10 times. One solution, implemented here, is disable | |
11720 | the breakpoint on error. Another solution would be to | |
11721 | have separate 'warning emitted' flag. Since this | |
11722 | happens only when a binary has changed, I don't know | |
11723 | which approach is better. */ | |
11724 | b->enable_state = bp_disabled; | |
11725 | throw_exception (e); | |
11726 | } | |
11727 | } | |
11728 | ||
58438ac1 | 11729 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 TJB |
11730 | { |
11731 | gdb_assert (sals.nelts == 1); | |
11732 | ||
11733 | resolve_sal_pc (&sals.sals[0]); | |
11734 | if (b->condition_not_parsed && s && s[0]) | |
11735 | { | |
11736 | char *cond_string = 0; | |
11737 | int thread = -1; | |
11738 | int task = 0; | |
11739 | ||
11740 | find_condition_and_thread (s, sals.sals[0].pc, | |
11741 | &cond_string, &thread, &task); | |
11742 | if (cond_string) | |
11743 | b->cond_string = cond_string; | |
11744 | b->thread = thread; | |
11745 | b->task = task; | |
11746 | b->condition_not_parsed = 0; | |
11747 | } | |
11748 | ||
11749 | if (b->type == bp_static_tracepoint && !marker_spec) | |
11750 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
ef23e705 | 11751 | |
58438ac1 TT |
11752 | *found = 1; |
11753 | } | |
11754 | else | |
11755 | *found = 0; | |
ef23e705 TJB |
11756 | |
11757 | return sals; | |
11758 | } | |
11759 | ||
348d480f PA |
11760 | /* The default re_set method, for typical hardware or software |
11761 | breakpoints. Reevaluate the breakpoint and recreate its | |
11762 | locations. */ | |
11763 | ||
11764 | static void | |
28010a5d | 11765 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
11766 | { |
11767 | int found; | |
f1310107 | 11768 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 11769 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 11770 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
11771 | |
11772 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
11773 | if (found) | |
11774 | { | |
11775 | make_cleanup (xfree, sals.sals); | |
11776 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
11777 | } | |
11778 | ||
f1310107 TJB |
11779 | if (b->addr_string_range_end) |
11780 | { | |
11781 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
11782 | if (found) | |
11783 | { | |
11784 | make_cleanup (xfree, sals_end.sals); | |
11785 | expanded_end = expand_line_sal_maybe (sals_end.sals[0]); | |
11786 | } | |
11787 | } | |
11788 | ||
11789 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
11790 | } |
11791 | ||
11792 | /* Prepare the global context for a re-set of breakpoint B. */ | |
11793 | ||
11794 | static struct cleanup * | |
11795 | prepare_re_set_context (struct breakpoint *b) | |
11796 | { | |
11797 | struct cleanup *cleanups; | |
11798 | ||
11799 | input_radix = b->input_radix; | |
11800 | cleanups = save_current_space_and_thread (); | |
11801 | switch_to_program_space_and_thread (b->pspace); | |
11802 | set_language (b->language); | |
11803 | ||
11804 | return cleanups; | |
ef23e705 TJB |
11805 | } |
11806 | ||
c906108c SS |
11807 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
11808 | The value we return ends up being the return value from catch_errors. | |
11809 | Unused in this case. */ | |
11810 | ||
11811 | static int | |
4efb68b1 | 11812 | breakpoint_re_set_one (void *bint) |
c906108c | 11813 | { |
4a64f543 | 11814 | /* Get past catch_errs. */ |
53a5351d | 11815 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 11816 | struct cleanup *cleanups; |
c906108c | 11817 | |
348d480f PA |
11818 | cleanups = prepare_re_set_context (b); |
11819 | b->ops->re_set (b); | |
11820 | do_cleanups (cleanups); | |
c906108c SS |
11821 | return 0; |
11822 | } | |
11823 | ||
69de3c6a | 11824 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 11825 | void |
69de3c6a | 11826 | breakpoint_re_set (void) |
c906108c | 11827 | { |
35df4500 | 11828 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11829 | enum language save_language; |
11830 | int save_input_radix; | |
6c95b8df | 11831 | struct cleanup *old_chain; |
c5aa993b | 11832 | |
c906108c SS |
11833 | save_language = current_language->la_language; |
11834 | save_input_radix = input_radix; | |
6c95b8df PA |
11835 | old_chain = save_current_program_space (); |
11836 | ||
35df4500 | 11837 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11838 | { |
4a64f543 | 11839 | /* Format possible error msg. */ |
fe3f5fa8 | 11840 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
11841 | b->number); |
11842 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 11843 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 11844 | do_cleanups (cleanups); |
c5aa993b | 11845 | } |
c906108c SS |
11846 | set_language (save_language); |
11847 | input_radix = save_input_radix; | |
e62c965a | 11848 | |
0756c555 | 11849 | jit_breakpoint_re_set (); |
4efc6507 | 11850 | |
6c95b8df PA |
11851 | do_cleanups (old_chain); |
11852 | ||
af02033e PP |
11853 | create_overlay_event_breakpoint (); |
11854 | create_longjmp_master_breakpoint (); | |
11855 | create_std_terminate_master_breakpoint (); | |
186c406b | 11856 | create_exception_master_breakpoint (); |
c906108c SS |
11857 | } |
11858 | \f | |
c906108c SS |
11859 | /* Reset the thread number of this breakpoint: |
11860 | ||
11861 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 11862 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 11863 | void |
fba45db2 | 11864 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
11865 | { |
11866 | if (b->thread != -1) | |
11867 | { | |
39f77062 KB |
11868 | if (in_thread_list (inferior_ptid)) |
11869 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
11870 | |
11871 | /* We're being called after following a fork. The new fork is | |
11872 | selected as current, and unless this was a vfork will have a | |
11873 | different program space from the original thread. Reset that | |
11874 | as well. */ | |
11875 | b->loc->pspace = current_program_space; | |
c906108c SS |
11876 | } |
11877 | } | |
11878 | ||
03ac34d5 MS |
11879 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11880 | If from_tty is nonzero, it prints a message to that effect, | |
11881 | which ends with a period (no newline). */ | |
11882 | ||
c906108c | 11883 | void |
fba45db2 | 11884 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 11885 | { |
52f0bd74 | 11886 | struct breakpoint *b; |
c906108c SS |
11887 | |
11888 | if (count < 0) | |
11889 | count = 0; | |
11890 | ||
11891 | ALL_BREAKPOINTS (b) | |
11892 | if (b->number == bptnum) | |
c5aa993b | 11893 | { |
d77f58be SS |
11894 | if (is_tracepoint (b)) |
11895 | { | |
11896 | if (from_tty && count != 0) | |
11897 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
11898 | bptnum); | |
11899 | return; | |
11900 | } | |
11901 | ||
c5aa993b | 11902 | b->ignore_count = count; |
221ea385 KS |
11903 | if (from_tty) |
11904 | { | |
11905 | if (count == 0) | |
3e43a32a MS |
11906 | printf_filtered (_("Will stop next time " |
11907 | "breakpoint %d is reached."), | |
221ea385 KS |
11908 | bptnum); |
11909 | else if (count == 1) | |
a3f17187 | 11910 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
11911 | bptnum); |
11912 | else | |
3e43a32a MS |
11913 | printf_filtered (_("Will ignore next %d " |
11914 | "crossings of breakpoint %d."), | |
221ea385 KS |
11915 | count, bptnum); |
11916 | } | |
c5aa993b | 11917 | breakpoints_changed (); |
8d3788bd | 11918 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
11919 | return; |
11920 | } | |
c906108c | 11921 | |
8a3fe4f8 | 11922 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
11923 | } |
11924 | ||
c906108c SS |
11925 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
11926 | ||
11927 | static void | |
fba45db2 | 11928 | ignore_command (char *args, int from_tty) |
c906108c SS |
11929 | { |
11930 | char *p = args; | |
52f0bd74 | 11931 | int num; |
c906108c SS |
11932 | |
11933 | if (p == 0) | |
e2e0b3e5 | 11934 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 11935 | |
c906108c | 11936 | num = get_number (&p); |
5c44784c | 11937 | if (num == 0) |
8a3fe4f8 | 11938 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 11939 | if (*p == 0) |
8a3fe4f8 | 11940 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
11941 | |
11942 | set_ignore_count (num, | |
11943 | longest_to_int (value_as_long (parse_and_eval (p))), | |
11944 | from_tty); | |
221ea385 KS |
11945 | if (from_tty) |
11946 | printf_filtered ("\n"); | |
c906108c SS |
11947 | } |
11948 | \f | |
11949 | /* Call FUNCTION on each of the breakpoints | |
11950 | whose numbers are given in ARGS. */ | |
11951 | ||
11952 | static void | |
95a42b64 TT |
11953 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
11954 | void *), | |
11955 | void *data) | |
c906108c | 11956 | { |
52f0bd74 AC |
11957 | int num; |
11958 | struct breakpoint *b, *tmp; | |
11cf8741 | 11959 | int match; |
197f0a60 | 11960 | struct get_number_or_range_state state; |
c906108c | 11961 | |
197f0a60 | 11962 | if (args == 0) |
e2e0b3e5 | 11963 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 11964 | |
197f0a60 TT |
11965 | init_number_or_range (&state, args); |
11966 | ||
11967 | while (!state.finished) | |
c906108c | 11968 | { |
197f0a60 TT |
11969 | char *p = state.string; |
11970 | ||
11cf8741 | 11971 | match = 0; |
c5aa993b | 11972 | |
197f0a60 | 11973 | num = get_number_or_range (&state); |
5c44784c | 11974 | if (num == 0) |
c5aa993b | 11975 | { |
8a3fe4f8 | 11976 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
11977 | } |
11978 | else | |
11979 | { | |
11980 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
11981 | if (b->number == num) | |
11982 | { | |
11cf8741 | 11983 | match = 1; |
cdac0397 | 11984 | function (b, data); |
11cf8741 | 11985 | break; |
5c44784c | 11986 | } |
11cf8741 | 11987 | if (match == 0) |
a3f17187 | 11988 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 11989 | } |
c906108c SS |
11990 | } |
11991 | } | |
11992 | ||
0d381245 VP |
11993 | static struct bp_location * |
11994 | find_location_by_number (char *number) | |
11995 | { | |
11996 | char *dot = strchr (number, '.'); | |
11997 | char *p1; | |
11998 | int bp_num; | |
11999 | int loc_num; | |
12000 | struct breakpoint *b; | |
12001 | struct bp_location *loc; | |
12002 | ||
12003 | *dot = '\0'; | |
12004 | ||
12005 | p1 = number; | |
197f0a60 | 12006 | bp_num = get_number (&p1); |
0d381245 VP |
12007 | if (bp_num == 0) |
12008 | error (_("Bad breakpoint number '%s'"), number); | |
12009 | ||
12010 | ALL_BREAKPOINTS (b) | |
12011 | if (b->number == bp_num) | |
12012 | { | |
12013 | break; | |
12014 | } | |
12015 | ||
12016 | if (!b || b->number != bp_num) | |
12017 | error (_("Bad breakpoint number '%s'"), number); | |
12018 | ||
12019 | p1 = dot+1; | |
197f0a60 | 12020 | loc_num = get_number (&p1); |
0d381245 VP |
12021 | if (loc_num == 0) |
12022 | error (_("Bad breakpoint location number '%s'"), number); | |
12023 | ||
12024 | --loc_num; | |
12025 | loc = b->loc; | |
12026 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
12027 | ; | |
12028 | if (!loc) | |
12029 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
12030 | ||
12031 | return loc; | |
12032 | } | |
12033 | ||
12034 | ||
1900040c MS |
12035 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12036 | If from_tty is nonzero, it prints a message to that effect, | |
12037 | which ends with a period (no newline). */ | |
12038 | ||
c906108c | 12039 | void |
fba45db2 | 12040 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
12041 | { |
12042 | /* Never disable a watchpoint scope breakpoint; we want to | |
12043 | hit them when we leave scope so we can delete both the | |
12044 | watchpoint and its scope breakpoint at that time. */ | |
12045 | if (bpt->type == bp_watchpoint_scope) | |
12046 | return; | |
12047 | ||
c2c6d25f | 12048 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 12049 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
12050 | return; |
12051 | ||
b5de0fa7 | 12052 | bpt->enable_state = bp_disabled; |
c906108c | 12053 | |
d248b706 KY |
12054 | if (target_supports_enable_disable_tracepoint () |
12055 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12056 | { | |
12057 | struct bp_location *location; | |
12058 | ||
12059 | for (location = bpt->loc; location; location = location->next) | |
12060 | target_disable_tracepoint (location); | |
12061 | } | |
12062 | ||
b60e7edf | 12063 | update_global_location_list (0); |
c906108c | 12064 | |
8d3788bd | 12065 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12066 | } |
12067 | ||
51be5b68 PA |
12068 | /* A callback for iterate_over_related_breakpoints. */ |
12069 | ||
12070 | static void | |
12071 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12072 | { | |
12073 | disable_breakpoint (b); | |
12074 | } | |
12075 | ||
95a42b64 TT |
12076 | /* A callback for map_breakpoint_numbers that calls |
12077 | disable_breakpoint. */ | |
12078 | ||
12079 | static void | |
12080 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12081 | { | |
51be5b68 | 12082 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
12083 | } |
12084 | ||
c906108c | 12085 | static void |
fba45db2 | 12086 | disable_command (char *args, int from_tty) |
c906108c | 12087 | { |
c906108c | 12088 | if (args == 0) |
46c6471b PA |
12089 | { |
12090 | struct breakpoint *bpt; | |
12091 | ||
12092 | ALL_BREAKPOINTS (bpt) | |
12093 | if (user_breakpoint_p (bpt)) | |
12094 | disable_breakpoint (bpt); | |
12095 | } | |
0d381245 VP |
12096 | else if (strchr (args, '.')) |
12097 | { | |
12098 | struct bp_location *loc = find_location_by_number (args); | |
12099 | if (loc) | |
d248b706 KY |
12100 | { |
12101 | loc->enabled = 0; | |
12102 | if (target_supports_enable_disable_tracepoint () | |
12103 | && current_trace_status ()->running && loc->owner | |
12104 | && is_tracepoint (loc->owner)) | |
12105 | target_disable_tracepoint (loc); | |
12106 | } | |
b60e7edf | 12107 | update_global_location_list (0); |
0d381245 | 12108 | } |
c906108c | 12109 | else |
95a42b64 | 12110 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
12111 | } |
12112 | ||
12113 | static void | |
51be5b68 | 12114 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 12115 | { |
afe38095 | 12116 | int target_resources_ok; |
c906108c SS |
12117 | |
12118 | if (bpt->type == bp_hardware_breakpoint) | |
12119 | { | |
12120 | int i; | |
c5aa993b | 12121 | i = hw_breakpoint_used_count (); |
53a5351d | 12122 | target_resources_ok = |
d92524f1 | 12123 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 12124 | i + 1, 0); |
c906108c | 12125 | if (target_resources_ok == 0) |
8a3fe4f8 | 12126 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 12127 | else if (target_resources_ok < 0) |
8a3fe4f8 | 12128 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
12129 | } |
12130 | ||
cc60f2e3 | 12131 | if (is_watchpoint (bpt)) |
c906108c | 12132 | { |
d07205c2 JK |
12133 | /* Initialize it just to avoid a GCC false warning. */ |
12134 | enum enable_state orig_enable_state = 0; | |
dde02812 ES |
12135 | struct gdb_exception e; |
12136 | ||
12137 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 12138 | { |
3a5c3e22 PA |
12139 | struct watchpoint *w = (struct watchpoint *) bpt; |
12140 | ||
1e718ff1 TJB |
12141 | orig_enable_state = bpt->enable_state; |
12142 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 12143 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 12144 | } |
dde02812 | 12145 | if (e.reason < 0) |
c5aa993b | 12146 | { |
1e718ff1 | 12147 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
12148 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
12149 | bpt->number); | |
12150 | return; | |
c5aa993b | 12151 | } |
c906108c | 12152 | } |
0101ce28 | 12153 | |
b4c291bb KH |
12154 | if (bpt->enable_state != bp_permanent) |
12155 | bpt->enable_state = bp_enabled; | |
d248b706 KY |
12156 | |
12157 | if (target_supports_enable_disable_tracepoint () | |
12158 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12159 | { | |
12160 | struct bp_location *location; | |
12161 | ||
12162 | for (location = bpt->loc; location; location = location->next) | |
12163 | target_enable_tracepoint (location); | |
12164 | } | |
12165 | ||
b4c291bb | 12166 | bpt->disposition = disposition; |
b60e7edf | 12167 | update_global_location_list (1); |
b4c291bb KH |
12168 | breakpoints_changed (); |
12169 | ||
8d3788bd | 12170 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12171 | } |
12172 | ||
fe3f5fa8 | 12173 | |
c906108c | 12174 | void |
fba45db2 | 12175 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 12176 | { |
51be5b68 PA |
12177 | enable_breakpoint_disp (bpt, bpt->disposition); |
12178 | } | |
12179 | ||
12180 | static void | |
12181 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
12182 | { | |
12183 | enable_breakpoint (bpt); | |
c906108c SS |
12184 | } |
12185 | ||
95a42b64 TT |
12186 | /* A callback for map_breakpoint_numbers that calls |
12187 | enable_breakpoint. */ | |
12188 | ||
12189 | static void | |
12190 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
12191 | { | |
51be5b68 | 12192 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
12193 | } |
12194 | ||
c906108c SS |
12195 | /* The enable command enables the specified breakpoints (or all defined |
12196 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 12197 | in stopping the inferior. */ |
c906108c | 12198 | |
c906108c | 12199 | static void |
fba45db2 | 12200 | enable_command (char *args, int from_tty) |
c906108c | 12201 | { |
c906108c | 12202 | if (args == 0) |
46c6471b PA |
12203 | { |
12204 | struct breakpoint *bpt; | |
12205 | ||
12206 | ALL_BREAKPOINTS (bpt) | |
12207 | if (user_breakpoint_p (bpt)) | |
12208 | enable_breakpoint (bpt); | |
12209 | } | |
0d381245 VP |
12210 | else if (strchr (args, '.')) |
12211 | { | |
12212 | struct bp_location *loc = find_location_by_number (args); | |
12213 | if (loc) | |
d248b706 KY |
12214 | { |
12215 | loc->enabled = 1; | |
12216 | if (target_supports_enable_disable_tracepoint () | |
12217 | && current_trace_status ()->running && loc->owner | |
12218 | && is_tracepoint (loc->owner)) | |
12219 | target_enable_tracepoint (loc); | |
12220 | } | |
b60e7edf | 12221 | update_global_location_list (1); |
0d381245 | 12222 | } |
c906108c | 12223 | else |
95a42b64 | 12224 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
12225 | } |
12226 | ||
12227 | static void | |
51be5b68 PA |
12228 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
12229 | { | |
12230 | enum bpdisp disp = *(enum bpdisp *) arg; | |
12231 | ||
12232 | enable_breakpoint_disp (bpt, disp); | |
12233 | } | |
12234 | ||
12235 | static void | |
12236 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 12237 | { |
51be5b68 PA |
12238 | enum bpdisp disp = disp_disable; |
12239 | ||
12240 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12241 | } |
12242 | ||
c906108c | 12243 | static void |
fba45db2 | 12244 | enable_once_command (char *args, int from_tty) |
c906108c | 12245 | { |
51be5b68 | 12246 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
12247 | } |
12248 | ||
12249 | static void | |
51be5b68 | 12250 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 12251 | { |
51be5b68 PA |
12252 | enum bpdisp disp = disp_del; |
12253 | ||
12254 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12255 | } |
12256 | ||
c906108c | 12257 | static void |
fba45db2 | 12258 | enable_delete_command (char *args, int from_tty) |
c906108c | 12259 | { |
51be5b68 | 12260 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
12261 | } |
12262 | \f | |
fa8d40ab JJ |
12263 | static void |
12264 | set_breakpoint_cmd (char *args, int from_tty) | |
12265 | { | |
12266 | } | |
12267 | ||
12268 | static void | |
12269 | show_breakpoint_cmd (char *args, int from_tty) | |
12270 | { | |
12271 | } | |
12272 | ||
1f3b5d1b PP |
12273 | /* Invalidate last known value of any hardware watchpoint if |
12274 | the memory which that value represents has been written to by | |
12275 | GDB itself. */ | |
12276 | ||
12277 | static void | |
12278 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
12279 | const bfd_byte *data) | |
12280 | { | |
12281 | struct breakpoint *bp; | |
12282 | ||
12283 | ALL_BREAKPOINTS (bp) | |
12284 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 12285 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 12286 | { |
3a5c3e22 | 12287 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 12288 | |
3a5c3e22 PA |
12289 | if (wp->val_valid && wp->val) |
12290 | { | |
12291 | struct bp_location *loc; | |
12292 | ||
12293 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
12294 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
12295 | && loc->address + loc->length > addr | |
12296 | && addr + len > loc->address) | |
12297 | { | |
12298 | value_free (wp->val); | |
12299 | wp->val = NULL; | |
12300 | wp->val_valid = 0; | |
12301 | } | |
12302 | } | |
1f3b5d1b PP |
12303 | } |
12304 | } | |
12305 | ||
c906108c SS |
12306 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
12307 | ||
12308 | struct symtabs_and_lines | |
fba45db2 | 12309 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
12310 | { |
12311 | struct symtabs_and_lines sals; | |
cc59ec59 | 12312 | |
c906108c | 12313 | if (string == 0) |
8a3fe4f8 | 12314 | error (_("Empty line specification.")); |
c906108c SS |
12315 | if (default_breakpoint_valid) |
12316 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
12317 | default_breakpoint_symtab, |
12318 | default_breakpoint_line, | |
58438ac1 | 12319 | NULL); |
c906108c SS |
12320 | else |
12321 | sals = decode_line_1 (&string, funfirstline, | |
58438ac1 | 12322 | (struct symtab *) NULL, 0, NULL); |
c906108c | 12323 | if (*string) |
8a3fe4f8 | 12324 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
12325 | return sals; |
12326 | } | |
8181d85f DJ |
12327 | |
12328 | /* Create and insert a raw software breakpoint at PC. Return an | |
12329 | identifier, which should be used to remove the breakpoint later. | |
12330 | In general, places which call this should be using something on the | |
12331 | breakpoint chain instead; this function should be eliminated | |
12332 | someday. */ | |
12333 | ||
12334 | void * | |
6c95b8df PA |
12335 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
12336 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
12337 | { |
12338 | struct bp_target_info *bp_tgt; | |
12339 | ||
6c95b8df | 12340 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 12341 | |
6c95b8df | 12342 | bp_tgt->placed_address_space = aspace; |
8181d85f | 12343 | bp_tgt->placed_address = pc; |
6c95b8df | 12344 | |
a6d9a66e | 12345 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
12346 | { |
12347 | /* Could not insert the breakpoint. */ | |
12348 | xfree (bp_tgt); | |
12349 | return NULL; | |
12350 | } | |
12351 | ||
12352 | return bp_tgt; | |
12353 | } | |
12354 | ||
4a64f543 MS |
12355 | /* Remove a breakpoint BP inserted by |
12356 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
12357 | |
12358 | int | |
a6d9a66e | 12359 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
12360 | { |
12361 | struct bp_target_info *bp_tgt = bp; | |
12362 | int ret; | |
12363 | ||
a6d9a66e | 12364 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
12365 | xfree (bp_tgt); |
12366 | ||
12367 | return ret; | |
12368 | } | |
12369 | ||
4a64f543 MS |
12370 | /* One (or perhaps two) breakpoints used for software single |
12371 | stepping. */ | |
8181d85f DJ |
12372 | |
12373 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 12374 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
12375 | |
12376 | /* Create and insert a breakpoint for software single step. */ | |
12377 | ||
12378 | void | |
6c95b8df | 12379 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
12380 | struct address_space *aspace, |
12381 | CORE_ADDR next_pc) | |
8181d85f DJ |
12382 | { |
12383 | void **bpt_p; | |
12384 | ||
12385 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
12386 | { |
12387 | bpt_p = &single_step_breakpoints[0]; | |
12388 | single_step_gdbarch[0] = gdbarch; | |
12389 | } | |
8181d85f DJ |
12390 | else |
12391 | { | |
12392 | gdb_assert (single_step_breakpoints[1] == NULL); | |
12393 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 12394 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
12395 | } |
12396 | ||
4a64f543 MS |
12397 | /* NOTE drow/2006-04-11: A future improvement to this function would |
12398 | be to only create the breakpoints once, and actually put them on | |
12399 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
12400 | We could adjust the addresses each time they were needed. Doing | |
12401 | this requires corresponding changes elsewhere where single step | |
12402 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 12403 | |
6c95b8df | 12404 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 12405 | if (*bpt_p == NULL) |
5af949e3 UW |
12406 | error (_("Could not insert single-step breakpoint at %s"), |
12407 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
12408 | } |
12409 | ||
f02253f1 HZ |
12410 | /* Check if the breakpoints used for software single stepping |
12411 | were inserted or not. */ | |
12412 | ||
12413 | int | |
12414 | single_step_breakpoints_inserted (void) | |
12415 | { | |
12416 | return (single_step_breakpoints[0] != NULL | |
12417 | || single_step_breakpoints[1] != NULL); | |
12418 | } | |
12419 | ||
8181d85f DJ |
12420 | /* Remove and delete any breakpoints used for software single step. */ |
12421 | ||
12422 | void | |
12423 | remove_single_step_breakpoints (void) | |
12424 | { | |
12425 | gdb_assert (single_step_breakpoints[0] != NULL); | |
12426 | ||
12427 | /* See insert_single_step_breakpoint for more about this deprecated | |
12428 | call. */ | |
a6d9a66e UW |
12429 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
12430 | single_step_breakpoints[0]); | |
12431 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
12432 | single_step_breakpoints[0] = NULL; |
12433 | ||
12434 | if (single_step_breakpoints[1] != NULL) | |
12435 | { | |
a6d9a66e UW |
12436 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
12437 | single_step_breakpoints[1]); | |
12438 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
12439 | single_step_breakpoints[1] = NULL; |
12440 | } | |
12441 | } | |
12442 | ||
d03285ec UW |
12443 | /* Delete software single step breakpoints without removing them from |
12444 | the inferior. This is intended to be used if the inferior's address | |
12445 | space where they were inserted is already gone, e.g. after exit or | |
12446 | exec. */ | |
12447 | ||
12448 | void | |
12449 | cancel_single_step_breakpoints (void) | |
12450 | { | |
12451 | int i; | |
12452 | ||
12453 | for (i = 0; i < 2; i++) | |
12454 | if (single_step_breakpoints[i]) | |
12455 | { | |
12456 | xfree (single_step_breakpoints[i]); | |
12457 | single_step_breakpoints[i] = NULL; | |
12458 | single_step_gdbarch[i] = NULL; | |
12459 | } | |
12460 | } | |
12461 | ||
12462 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
12463 | removing them. */ | |
12464 | ||
12465 | static void | |
12466 | detach_single_step_breakpoints (void) | |
12467 | { | |
12468 | int i; | |
12469 | ||
12470 | for (i = 0; i < 2; i++) | |
12471 | if (single_step_breakpoints[i]) | |
12472 | target_remove_breakpoint (single_step_gdbarch[i], | |
12473 | single_step_breakpoints[i]); | |
12474 | } | |
12475 | ||
4a64f543 MS |
12476 | /* Check whether a software single-step breakpoint is inserted at |
12477 | PC. */ | |
1aafd4da UW |
12478 | |
12479 | static int | |
cc59ec59 MS |
12480 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
12481 | CORE_ADDR pc) | |
1aafd4da UW |
12482 | { |
12483 | int i; | |
12484 | ||
12485 | for (i = 0; i < 2; i++) | |
12486 | { | |
12487 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
12488 | if (bp_tgt |
12489 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
12490 | bp_tgt->placed_address, | |
12491 | aspace, pc)) | |
1aafd4da UW |
12492 | return 1; |
12493 | } | |
12494 | ||
12495 | return 0; | |
12496 | } | |
12497 | ||
a96d9b2e SDJ |
12498 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
12499 | non-zero otherwise. */ | |
12500 | static int | |
12501 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
12502 | { | |
12503 | if (syscall_catchpoint_p (bp) | |
12504 | && bp->enable_state != bp_disabled | |
12505 | && bp->enable_state != bp_call_disabled) | |
12506 | return 1; | |
12507 | else | |
12508 | return 0; | |
12509 | } | |
12510 | ||
12511 | int | |
12512 | catch_syscall_enabled (void) | |
12513 | { | |
12514 | struct inferior *inf = current_inferior (); | |
12515 | ||
12516 | return inf->total_syscalls_count != 0; | |
12517 | } | |
12518 | ||
12519 | int | |
12520 | catching_syscall_number (int syscall_number) | |
12521 | { | |
12522 | struct breakpoint *bp; | |
12523 | ||
12524 | ALL_BREAKPOINTS (bp) | |
12525 | if (is_syscall_catchpoint_enabled (bp)) | |
12526 | { | |
be5c67c1 PA |
12527 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
12528 | ||
12529 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
12530 | { |
12531 | int i, iter; | |
12532 | for (i = 0; | |
be5c67c1 | 12533 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
12534 | i++) |
12535 | if (syscall_number == iter) | |
12536 | return 1; | |
12537 | } | |
12538 | else | |
12539 | return 1; | |
12540 | } | |
12541 | ||
12542 | return 0; | |
12543 | } | |
12544 | ||
12545 | /* Complete syscall names. Used by "catch syscall". */ | |
12546 | static char ** | |
12547 | catch_syscall_completer (struct cmd_list_element *cmd, | |
12548 | char *text, char *word) | |
12549 | { | |
12550 | const char **list = get_syscall_names (); | |
c38eea1a MS |
12551 | char **retlist |
12552 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 12553 | |
c38eea1a MS |
12554 | xfree (list); |
12555 | return retlist; | |
a96d9b2e SDJ |
12556 | } |
12557 | ||
1042e4c0 SS |
12558 | /* Tracepoint-specific operations. */ |
12559 | ||
12560 | /* Set tracepoint count to NUM. */ | |
12561 | static void | |
12562 | set_tracepoint_count (int num) | |
12563 | { | |
12564 | tracepoint_count = num; | |
4fa62494 | 12565 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
12566 | } |
12567 | ||
12568 | void | |
12569 | trace_command (char *arg, int from_tty) | |
12570 | { | |
8cdf0e15 VP |
12571 | if (create_breakpoint (get_current_arch (), |
12572 | arg, | |
12573 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12574 | 0 /* tempflag */, |
12575 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12576 | 0 /* Ignore count */, |
12577 | pending_break_support, | |
348d480f | 12578 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12579 | from_tty, |
84f4c1fe PM |
12580 | 1 /* enabled */, |
12581 | 0 /* internal */)) | |
fd9b8c24 | 12582 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
12583 | } |
12584 | ||
7a697b8d SS |
12585 | void |
12586 | ftrace_command (char *arg, int from_tty) | |
12587 | { | |
8cdf0e15 VP |
12588 | if (create_breakpoint (get_current_arch (), |
12589 | arg, | |
12590 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12591 | 0 /* tempflag */, |
12592 | bp_fast_tracepoint /* type_wanted */, | |
12593 | 0 /* Ignore count */, | |
12594 | pending_break_support, | |
348d480f | 12595 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 12596 | from_tty, |
84f4c1fe PM |
12597 | 1 /* enabled */, |
12598 | 0 /* internal */)) | |
0fb4aa4b PA |
12599 | set_tracepoint_count (breakpoint_count); |
12600 | } | |
12601 | ||
12602 | /* strace command implementation. Creates a static tracepoint. */ | |
12603 | ||
12604 | void | |
12605 | strace_command (char *arg, int from_tty) | |
12606 | { | |
12607 | if (create_breakpoint (get_current_arch (), | |
12608 | arg, | |
12609 | NULL, 0, 1 /* parse arg */, | |
12610 | 0 /* tempflag */, | |
12611 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12612 | 0 /* Ignore count */, |
12613 | pending_break_support, | |
348d480f | 12614 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12615 | from_tty, |
84f4c1fe PM |
12616 | 1 /* enabled */, |
12617 | 0 /* internal */)) | |
fd9b8c24 | 12618 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
12619 | } |
12620 | ||
409873ef SS |
12621 | /* Set up a fake reader function that gets command lines from a linked |
12622 | list that was acquired during tracepoint uploading. */ | |
12623 | ||
12624 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 12625 | static int next_cmd; |
409873ef SS |
12626 | |
12627 | static char * | |
12628 | read_uploaded_action (void) | |
12629 | { | |
12630 | char *rslt; | |
12631 | ||
3149d8c1 | 12632 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 12633 | |
3149d8c1 | 12634 | next_cmd++; |
409873ef SS |
12635 | |
12636 | return rslt; | |
12637 | } | |
12638 | ||
00bf0b85 SS |
12639 | /* Given information about a tracepoint as recorded on a target (which |
12640 | can be either a live system or a trace file), attempt to create an | |
12641 | equivalent GDB tracepoint. This is not a reliable process, since | |
12642 | the target does not necessarily have all the information used when | |
12643 | the tracepoint was originally defined. */ | |
12644 | ||
d9b3f62e | 12645 | struct tracepoint * |
00bf0b85 | 12646 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 12647 | { |
409873ef | 12648 | char *addr_str, small_buf[100]; |
d9b3f62e | 12649 | struct tracepoint *tp; |
fd9b8c24 | 12650 | |
409873ef SS |
12651 | if (utp->at_string) |
12652 | addr_str = utp->at_string; | |
12653 | else | |
12654 | { | |
12655 | /* In the absence of a source location, fall back to raw | |
12656 | address. Since there is no way to confirm that the address | |
12657 | means the same thing as when the trace was started, warn the | |
12658 | user. */ | |
3e43a32a MS |
12659 | warning (_("Uploaded tracepoint %d has no " |
12660 | "source location, using raw address"), | |
409873ef SS |
12661 | utp->number); |
12662 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
12663 | addr_str = small_buf; | |
12664 | } | |
12665 | ||
12666 | /* There's not much we can do with a sequence of bytecodes. */ | |
12667 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
12668 | warning (_("Uploaded tracepoint %d condition " |
12669 | "has no source form, ignoring it"), | |
409873ef | 12670 | utp->number); |
d5551862 | 12671 | |
8cdf0e15 | 12672 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
12673 | addr_str, |
12674 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 12675 | 0 /* tempflag */, |
0fb4aa4b | 12676 | utp->type /* type_wanted */, |
8cdf0e15 VP |
12677 | 0 /* Ignore count */, |
12678 | pending_break_support, | |
348d480f | 12679 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12680 | 0 /* from_tty */, |
84f4c1fe PM |
12681 | utp->enabled /* enabled */, |
12682 | 0 /* internal */)) | |
fd9b8c24 PA |
12683 | return NULL; |
12684 | ||
00bf0b85 SS |
12685 | set_tracepoint_count (breakpoint_count); |
12686 | ||
409873ef | 12687 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
12688 | tp = get_tracepoint (tracepoint_count); |
12689 | gdb_assert (tp != NULL); | |
d5551862 | 12690 | |
00bf0b85 SS |
12691 | if (utp->pass > 0) |
12692 | { | |
d9b3f62e | 12693 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 12694 | |
409873ef | 12695 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
12696 | } |
12697 | ||
409873ef SS |
12698 | /* If we have uploaded versions of the original commands, set up a |
12699 | special-purpose "reader" function and call the usual command line | |
12700 | reader, then pass the result to the breakpoint command-setting | |
12701 | function. */ | |
3149d8c1 | 12702 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 12703 | { |
409873ef | 12704 | struct command_line *cmd_list; |
00bf0b85 | 12705 | |
409873ef | 12706 | this_utp = utp; |
3149d8c1 | 12707 | next_cmd = 0; |
d5551862 | 12708 | |
409873ef SS |
12709 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
12710 | ||
d9b3f62e | 12711 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 12712 | } |
3149d8c1 SS |
12713 | else if (!VEC_empty (char_ptr, utp->actions) |
12714 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
12715 | warning (_("Uploaded tracepoint %d actions " |
12716 | "have no source form, ignoring them"), | |
409873ef | 12717 | utp->number); |
00bf0b85 SS |
12718 | |
12719 | return tp; | |
d9b3f62e | 12720 | } |
00bf0b85 | 12721 | |
1042e4c0 SS |
12722 | /* Print information on tracepoint number TPNUM_EXP, or all if |
12723 | omitted. */ | |
12724 | ||
12725 | static void | |
e5a67952 | 12726 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 12727 | { |
e5a67952 | 12728 | int num_printed; |
1042e4c0 | 12729 | |
e5a67952 | 12730 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
12731 | |
12732 | if (num_printed == 0) | |
1042e4c0 | 12733 | { |
e5a67952 | 12734 | if (args == NULL || *args == '\0') |
d77f58be SS |
12735 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
12736 | else | |
e5a67952 | 12737 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 12738 | } |
ad443146 SS |
12739 | |
12740 | default_collect_info (); | |
1042e4c0 SS |
12741 | } |
12742 | ||
4a64f543 | 12743 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
12744 | Not supported by all targets. */ |
12745 | static void | |
12746 | enable_trace_command (char *args, int from_tty) | |
12747 | { | |
12748 | enable_command (args, from_tty); | |
12749 | } | |
12750 | ||
4a64f543 | 12751 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
12752 | Not supported by all targets. */ |
12753 | static void | |
12754 | disable_trace_command (char *args, int from_tty) | |
12755 | { | |
12756 | disable_command (args, from_tty); | |
12757 | } | |
12758 | ||
4a64f543 | 12759 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
12760 | static void |
12761 | delete_trace_command (char *arg, int from_tty) | |
12762 | { | |
35df4500 | 12763 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
12764 | |
12765 | dont_repeat (); | |
12766 | ||
12767 | if (arg == 0) | |
12768 | { | |
12769 | int breaks_to_delete = 0; | |
12770 | ||
12771 | /* Delete all breakpoints if no argument. | |
12772 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
12773 | have to be deleted with an explicit breakpoint number |
12774 | argument. */ | |
1042e4c0 | 12775 | ALL_TRACEPOINTS (b) |
46c6471b | 12776 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
12777 | { |
12778 | breaks_to_delete = 1; | |
12779 | break; | |
12780 | } | |
1042e4c0 SS |
12781 | |
12782 | /* Ask user only if there are some breakpoints to delete. */ | |
12783 | if (!from_tty | |
12784 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
12785 | { | |
35df4500 | 12786 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 12787 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 12788 | delete_breakpoint (b); |
1042e4c0 SS |
12789 | } |
12790 | } | |
12791 | else | |
51be5b68 | 12792 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
12793 | } |
12794 | ||
197f0a60 TT |
12795 | /* Helper function for trace_pass_command. */ |
12796 | ||
12797 | static void | |
d9b3f62e | 12798 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 12799 | { |
d9b3f62e PA |
12800 | tp->pass_count = count; |
12801 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
12802 | if (from_tty) |
12803 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 12804 | tp->base.number, count); |
197f0a60 TT |
12805 | } |
12806 | ||
1042e4c0 SS |
12807 | /* Set passcount for tracepoint. |
12808 | ||
12809 | First command argument is passcount, second is tracepoint number. | |
12810 | If tracepoint number omitted, apply to most recently defined. | |
12811 | Also accepts special argument "all". */ | |
12812 | ||
12813 | static void | |
12814 | trace_pass_command (char *args, int from_tty) | |
12815 | { | |
d9b3f62e | 12816 | struct tracepoint *t1; |
1042e4c0 | 12817 | unsigned int count; |
1042e4c0 SS |
12818 | |
12819 | if (args == 0 || *args == 0) | |
3e43a32a MS |
12820 | error (_("passcount command requires an " |
12821 | "argument (count + optional TP num)")); | |
1042e4c0 | 12822 | |
4a64f543 | 12823 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
12824 | |
12825 | while (*args && isspace ((int) *args)) | |
12826 | args++; | |
12827 | ||
12828 | if (*args && strncasecmp (args, "all", 3) == 0) | |
12829 | { | |
d9b3f62e PA |
12830 | struct breakpoint *b; |
12831 | ||
1042e4c0 | 12832 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
12833 | if (*args) |
12834 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 12835 | |
d9b3f62e | 12836 | ALL_TRACEPOINTS (b) |
197f0a60 | 12837 | { |
d9b3f62e | 12838 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
12839 | trace_pass_set_count (t1, count, from_tty); |
12840 | } | |
12841 | } | |
12842 | else if (*args == '\0') | |
1042e4c0 | 12843 | { |
197f0a60 | 12844 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 12845 | if (t1) |
197f0a60 TT |
12846 | trace_pass_set_count (t1, count, from_tty); |
12847 | } | |
12848 | else | |
12849 | { | |
12850 | struct get_number_or_range_state state; | |
12851 | ||
12852 | init_number_or_range (&state, args); | |
12853 | while (!state.finished) | |
1042e4c0 | 12854 | { |
197f0a60 TT |
12855 | t1 = get_tracepoint_by_number (&args, &state, 1); |
12856 | if (t1) | |
12857 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
12858 | } |
12859 | } | |
1042e4c0 SS |
12860 | } |
12861 | ||
d9b3f62e | 12862 | struct tracepoint * |
1042e4c0 SS |
12863 | get_tracepoint (int num) |
12864 | { | |
12865 | struct breakpoint *t; | |
12866 | ||
12867 | ALL_TRACEPOINTS (t) | |
12868 | if (t->number == num) | |
d9b3f62e | 12869 | return (struct tracepoint *) t; |
1042e4c0 SS |
12870 | |
12871 | return NULL; | |
12872 | } | |
12873 | ||
d5551862 SS |
12874 | /* Find the tracepoint with the given target-side number (which may be |
12875 | different from the tracepoint number after disconnecting and | |
12876 | reconnecting). */ | |
12877 | ||
d9b3f62e | 12878 | struct tracepoint * |
d5551862 SS |
12879 | get_tracepoint_by_number_on_target (int num) |
12880 | { | |
d9b3f62e | 12881 | struct breakpoint *b; |
d5551862 | 12882 | |
d9b3f62e PA |
12883 | ALL_TRACEPOINTS (b) |
12884 | { | |
12885 | struct tracepoint *t = (struct tracepoint *) b; | |
12886 | ||
12887 | if (t->number_on_target == num) | |
12888 | return t; | |
12889 | } | |
d5551862 SS |
12890 | |
12891 | return NULL; | |
12892 | } | |
12893 | ||
1042e4c0 | 12894 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
12895 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
12896 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 12897 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 12898 | struct tracepoint * |
197f0a60 TT |
12899 | get_tracepoint_by_number (char **arg, |
12900 | struct get_number_or_range_state *state, | |
12901 | int optional_p) | |
1042e4c0 SS |
12902 | { |
12903 | extern int tracepoint_count; | |
12904 | struct breakpoint *t; | |
12905 | int tpnum; | |
12906 | char *instring = arg == NULL ? NULL : *arg; | |
12907 | ||
197f0a60 TT |
12908 | if (state) |
12909 | { | |
12910 | gdb_assert (!state->finished); | |
12911 | tpnum = get_number_or_range (state); | |
12912 | } | |
12913 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
12914 | { |
12915 | if (optional_p) | |
12916 | tpnum = tracepoint_count; | |
12917 | else | |
12918 | error_no_arg (_("tracepoint number")); | |
12919 | } | |
12920 | else | |
197f0a60 | 12921 | tpnum = get_number (arg); |
1042e4c0 SS |
12922 | |
12923 | if (tpnum <= 0) | |
12924 | { | |
12925 | if (instring && *instring) | |
12926 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
12927 | instring); | |
12928 | else | |
3e43a32a MS |
12929 | printf_filtered (_("Tracepoint argument missing " |
12930 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
12931 | return NULL; |
12932 | } | |
12933 | ||
12934 | ALL_TRACEPOINTS (t) | |
12935 | if (t->number == tpnum) | |
12936 | { | |
d9b3f62e | 12937 | return (struct tracepoint *) t; |
1042e4c0 SS |
12938 | } |
12939 | ||
1042e4c0 SS |
12940 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
12941 | return NULL; | |
12942 | } | |
12943 | ||
d9b3f62e PA |
12944 | void |
12945 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
12946 | { | |
12947 | if (b->thread != -1) | |
12948 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
12949 | ||
12950 | if (b->task != 0) | |
12951 | fprintf_unfiltered (fp, " task %d", b->task); | |
12952 | ||
12953 | fprintf_unfiltered (fp, "\n"); | |
12954 | } | |
12955 | ||
6149aea9 PA |
12956 | /* Save information on user settable breakpoints (watchpoints, etc) to |
12957 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
12958 | on each breakpoint and only include the ones for which it returns | |
12959 | non-zero. */ | |
12960 | ||
1042e4c0 | 12961 | static void |
6149aea9 PA |
12962 | save_breakpoints (char *filename, int from_tty, |
12963 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
12964 | { |
12965 | struct breakpoint *tp; | |
6149aea9 | 12966 | int any = 0; |
a7bdde9e | 12967 | char *pathname; |
1042e4c0 | 12968 | struct cleanup *cleanup; |
a7bdde9e | 12969 | struct ui_file *fp; |
6149aea9 | 12970 | int extra_trace_bits = 0; |
1042e4c0 | 12971 | |
6149aea9 PA |
12972 | if (filename == 0 || *filename == 0) |
12973 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
12974 | |
12975 | /* See if we have anything to save. */ | |
6149aea9 | 12976 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 12977 | { |
6149aea9 | 12978 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 12979 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
12980 | continue; |
12981 | ||
12982 | /* If we have a filter, only save the breakpoints it accepts. */ | |
12983 | if (filter && !filter (tp)) | |
12984 | continue; | |
12985 | ||
12986 | any = 1; | |
12987 | ||
12988 | if (is_tracepoint (tp)) | |
12989 | { | |
12990 | extra_trace_bits = 1; | |
12991 | ||
12992 | /* We can stop searching. */ | |
12993 | break; | |
12994 | } | |
1042e4c0 | 12995 | } |
6149aea9 PA |
12996 | |
12997 | if (!any) | |
1042e4c0 | 12998 | { |
6149aea9 | 12999 | warning (_("Nothing to save.")); |
1042e4c0 SS |
13000 | return; |
13001 | } | |
13002 | ||
6149aea9 | 13003 | pathname = tilde_expand (filename); |
1042e4c0 | 13004 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 13005 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 13006 | if (!fp) |
6149aea9 PA |
13007 | error (_("Unable to open file '%s' for saving (%s)"), |
13008 | filename, safe_strerror (errno)); | |
a7bdde9e | 13009 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 13010 | |
6149aea9 PA |
13011 | if (extra_trace_bits) |
13012 | save_trace_state_variables (fp); | |
8bf6485c | 13013 | |
6149aea9 | 13014 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13015 | { |
6149aea9 | 13016 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13017 | if (!user_breakpoint_p (tp)) |
6149aea9 | 13018 | continue; |
8bf6485c | 13019 | |
6149aea9 PA |
13020 | /* If we have a filter, only save the breakpoints it accepts. */ |
13021 | if (filter && !filter (tp)) | |
13022 | continue; | |
13023 | ||
348d480f | 13024 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 13025 | |
6149aea9 PA |
13026 | /* Note, we can't rely on tp->number for anything, as we can't |
13027 | assume the recreated breakpoint numbers will match. Use $bpnum | |
13028 | instead. */ | |
13029 | ||
13030 | if (tp->cond_string) | |
13031 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
13032 | ||
13033 | if (tp->ignore_count) | |
13034 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
13035 | ||
a7bdde9e | 13036 | if (tp->commands) |
1042e4c0 | 13037 | { |
a7bdde9e VP |
13038 | volatile struct gdb_exception ex; |
13039 | ||
6149aea9 | 13040 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
13041 | |
13042 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 13043 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 13044 | { |
9add0f1b | 13045 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
13046 | } |
13047 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 13048 | |
a7bdde9e VP |
13049 | if (ex.reason < 0) |
13050 | throw_exception (ex); | |
1042e4c0 | 13051 | |
a7bdde9e | 13052 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 13053 | } |
6149aea9 PA |
13054 | |
13055 | if (tp->enable_state == bp_disabled) | |
13056 | fprintf_unfiltered (fp, "disable\n"); | |
13057 | ||
13058 | /* If this is a multi-location breakpoint, check if the locations | |
13059 | should be individually disabled. Watchpoint locations are | |
13060 | special, and not user visible. */ | |
13061 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
13062 | { | |
13063 | struct bp_location *loc; | |
13064 | int n = 1; | |
13065 | ||
13066 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
13067 | if (!loc->enabled) | |
13068 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
13069 | } | |
1042e4c0 | 13070 | } |
8bf6485c | 13071 | |
6149aea9 | 13072 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
13073 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
13074 | ||
1042e4c0 SS |
13075 | do_cleanups (cleanup); |
13076 | if (from_tty) | |
6149aea9 PA |
13077 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
13078 | } | |
13079 | ||
13080 | /* The `save breakpoints' command. */ | |
13081 | ||
13082 | static void | |
13083 | save_breakpoints_command (char *args, int from_tty) | |
13084 | { | |
13085 | save_breakpoints (args, from_tty, NULL); | |
13086 | } | |
13087 | ||
13088 | /* The `save tracepoints' command. */ | |
13089 | ||
13090 | static void | |
13091 | save_tracepoints_command (char *args, int from_tty) | |
13092 | { | |
13093 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
13094 | } |
13095 | ||
13096 | /* Create a vector of all tracepoints. */ | |
13097 | ||
13098 | VEC(breakpoint_p) * | |
eeae04df | 13099 | all_tracepoints (void) |
1042e4c0 SS |
13100 | { |
13101 | VEC(breakpoint_p) *tp_vec = 0; | |
13102 | struct breakpoint *tp; | |
13103 | ||
13104 | ALL_TRACEPOINTS (tp) | |
13105 | { | |
13106 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
13107 | } | |
13108 | ||
13109 | return tp_vec; | |
13110 | } | |
13111 | ||
c906108c | 13112 | \f |
4a64f543 MS |
13113 | /* This help string is used for the break, hbreak, tbreak and thbreak |
13114 | commands. It is defined as a macro to prevent duplication. | |
13115 | COMMAND should be a string constant containing the name of the | |
13116 | command. */ | |
31e2b00f AS |
13117 | #define BREAK_ARGS_HELP(command) \ |
13118 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
13119 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
13120 | If a line number is specified, break at start of code for that line.\n\ | |
13121 | If a function is specified, break at start of code for that function.\n\ | |
13122 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
13123 | With no LOCATION, uses current execution address of the selected\n\ |
13124 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
13125 | \n\ |
13126 | THREADNUM is the number from \"info threads\".\n\ | |
13127 | CONDITION is a boolean expression.\n\ | |
13128 | \n\ | |
d41c0fc8 PA |
13129 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
13130 | conditions are different.\n\ | |
31e2b00f AS |
13131 | \n\ |
13132 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
13133 | ||
44feb3ce TT |
13134 | /* List of subcommands for "catch". */ |
13135 | static struct cmd_list_element *catch_cmdlist; | |
13136 | ||
13137 | /* List of subcommands for "tcatch". */ | |
13138 | static struct cmd_list_element *tcatch_cmdlist; | |
13139 | ||
9ac4176b | 13140 | void |
44feb3ce TT |
13141 | add_catch_command (char *name, char *docstring, |
13142 | void (*sfunc) (char *args, int from_tty, | |
13143 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
13144 | char **(*completer) (struct cmd_list_element *cmd, |
13145 | char *text, char *word), | |
44feb3ce TT |
13146 | void *user_data_catch, |
13147 | void *user_data_tcatch) | |
13148 | { | |
13149 | struct cmd_list_element *command; | |
13150 | ||
13151 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13152 | &catch_cmdlist); | |
13153 | set_cmd_sfunc (command, sfunc); | |
13154 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 13155 | set_cmd_completer (command, completer); |
44feb3ce TT |
13156 | |
13157 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13158 | &tcatch_cmdlist); | |
13159 | set_cmd_sfunc (command, sfunc); | |
13160 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 13161 | set_cmd_completer (command, completer); |
44feb3ce TT |
13162 | } |
13163 | ||
6c95b8df | 13164 | static void |
a79b8f6e | 13165 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 13166 | { |
6c95b8df PA |
13167 | inf->total_syscalls_count = 0; |
13168 | inf->any_syscall_count = 0; | |
13169 | VEC_free (int, inf->syscalls_counts); | |
13170 | } | |
13171 | ||
6149aea9 PA |
13172 | static void |
13173 | save_command (char *arg, int from_tty) | |
13174 | { | |
3e43a32a MS |
13175 | printf_unfiltered (_("\"save\" must be followed by " |
13176 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
13177 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
13178 | } | |
13179 | ||
84f4c1fe PM |
13180 | struct breakpoint * |
13181 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
13182 | void *data) | |
13183 | { | |
35df4500 | 13184 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 13185 | |
35df4500 | 13186 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
13187 | { |
13188 | if ((*callback) (b, data)) | |
13189 | return b; | |
13190 | } | |
13191 | ||
13192 | return NULL; | |
13193 | } | |
13194 | ||
2060206e PA |
13195 | void |
13196 | initialize_breakpoint_ops (void) | |
13197 | { | |
13198 | static int initialized = 0; | |
13199 | ||
13200 | struct breakpoint_ops *ops; | |
13201 | ||
13202 | if (initialized) | |
13203 | return; | |
13204 | initialized = 1; | |
13205 | ||
13206 | /* The breakpoint_ops structure to be inherit by all kinds of | |
13207 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
13208 | internal and momentary breakpoints, etc.). */ | |
13209 | ops = &bkpt_base_breakpoint_ops; | |
13210 | *ops = base_breakpoint_ops; | |
13211 | ops->re_set = bkpt_re_set; | |
13212 | ops->insert_location = bkpt_insert_location; | |
13213 | ops->remove_location = bkpt_remove_location; | |
13214 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
13215 | ||
13216 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
13217 | ops = &bkpt_breakpoint_ops; | |
13218 | *ops = bkpt_base_breakpoint_ops; | |
13219 | ops->re_set = bkpt_re_set; | |
13220 | ops->resources_needed = bkpt_resources_needed; | |
13221 | ops->print_it = bkpt_print_it; | |
13222 | ops->print_mention = bkpt_print_mention; | |
13223 | ops->print_recreate = bkpt_print_recreate; | |
13224 | ||
13225 | /* Ranged breakpoints. */ | |
13226 | ops = &ranged_breakpoint_ops; | |
13227 | *ops = bkpt_breakpoint_ops; | |
13228 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
13229 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
13230 | ops->print_it = print_it_ranged_breakpoint; | |
13231 | ops->print_one = print_one_ranged_breakpoint; | |
13232 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
13233 | ops->print_mention = print_mention_ranged_breakpoint; | |
13234 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
13235 | ||
13236 | /* Internal breakpoints. */ | |
13237 | ops = &internal_breakpoint_ops; | |
13238 | *ops = bkpt_base_breakpoint_ops; | |
13239 | ops->re_set = internal_bkpt_re_set; | |
13240 | ops->check_status = internal_bkpt_check_status; | |
13241 | ops->print_it = internal_bkpt_print_it; | |
13242 | ops->print_mention = internal_bkpt_print_mention; | |
13243 | ||
13244 | /* Momentary breakpoints. */ | |
13245 | ops = &momentary_breakpoint_ops; | |
13246 | *ops = bkpt_base_breakpoint_ops; | |
13247 | ops->re_set = momentary_bkpt_re_set; | |
13248 | ops->check_status = momentary_bkpt_check_status; | |
13249 | ops->print_it = momentary_bkpt_print_it; | |
13250 | ops->print_mention = momentary_bkpt_print_mention; | |
13251 | ||
13252 | /* GNU v3 exception catchpoints. */ | |
13253 | ops = &gnu_v3_exception_catchpoint_ops; | |
13254 | *ops = bkpt_breakpoint_ops; | |
13255 | ops->print_it = print_it_exception_catchpoint; | |
13256 | ops->print_one = print_one_exception_catchpoint; | |
13257 | ops->print_mention = print_mention_exception_catchpoint; | |
13258 | ops->print_recreate = print_recreate_exception_catchpoint; | |
13259 | ||
13260 | /* Watchpoints. */ | |
13261 | ops = &watchpoint_breakpoint_ops; | |
13262 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 13263 | ops->dtor = dtor_watchpoint; |
2060206e PA |
13264 | ops->re_set = re_set_watchpoint; |
13265 | ops->insert_location = insert_watchpoint; | |
13266 | ops->remove_location = remove_watchpoint; | |
13267 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
13268 | ops->check_status = check_status_watchpoint; | |
13269 | ops->resources_needed = resources_needed_watchpoint; | |
13270 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
13271 | ops->print_it = print_it_watchpoint; | |
13272 | ops->print_mention = print_mention_watchpoint; | |
13273 | ops->print_recreate = print_recreate_watchpoint; | |
13274 | ||
13275 | /* Masked watchpoints. */ | |
13276 | ops = &masked_watchpoint_breakpoint_ops; | |
13277 | *ops = watchpoint_breakpoint_ops; | |
13278 | ops->insert_location = insert_masked_watchpoint; | |
13279 | ops->remove_location = remove_masked_watchpoint; | |
13280 | ops->resources_needed = resources_needed_masked_watchpoint; | |
13281 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
13282 | ops->print_it = print_it_masked_watchpoint; | |
13283 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
13284 | ops->print_mention = print_mention_masked_watchpoint; | |
13285 | ops->print_recreate = print_recreate_masked_watchpoint; | |
13286 | ||
13287 | /* Tracepoints. */ | |
13288 | ops = &tracepoint_breakpoint_ops; | |
13289 | *ops = base_breakpoint_ops; | |
13290 | ops->re_set = tracepoint_re_set; | |
13291 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
13292 | ops->print_one_detail = tracepoint_print_one_detail; | |
13293 | ops->print_mention = tracepoint_print_mention; | |
13294 | ops->print_recreate = tracepoint_print_recreate; | |
13295 | ||
13296 | /* Fork catchpoints. */ | |
13297 | ops = &catch_fork_breakpoint_ops; | |
13298 | *ops = base_breakpoint_ops; | |
13299 | ops->insert_location = insert_catch_fork; | |
13300 | ops->remove_location = remove_catch_fork; | |
13301 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
13302 | ops->print_it = print_it_catch_fork; | |
13303 | ops->print_one = print_one_catch_fork; | |
13304 | ops->print_mention = print_mention_catch_fork; | |
13305 | ops->print_recreate = print_recreate_catch_fork; | |
13306 | ||
13307 | /* Vfork catchpoints. */ | |
13308 | ops = &catch_vfork_breakpoint_ops; | |
13309 | *ops = base_breakpoint_ops; | |
13310 | ops->insert_location = insert_catch_vfork; | |
13311 | ops->remove_location = remove_catch_vfork; | |
13312 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
13313 | ops->print_it = print_it_catch_vfork; | |
13314 | ops->print_one = print_one_catch_vfork; | |
13315 | ops->print_mention = print_mention_catch_vfork; | |
13316 | ops->print_recreate = print_recreate_catch_vfork; | |
13317 | ||
13318 | /* Exec catchpoints. */ | |
13319 | ops = &catch_exec_breakpoint_ops; | |
13320 | *ops = base_breakpoint_ops; | |
13321 | ops->dtor = dtor_catch_exec; | |
13322 | ops->insert_location = insert_catch_exec; | |
13323 | ops->remove_location = remove_catch_exec; | |
13324 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
13325 | ops->print_it = print_it_catch_exec; | |
13326 | ops->print_one = print_one_catch_exec; | |
13327 | ops->print_mention = print_mention_catch_exec; | |
13328 | ops->print_recreate = print_recreate_catch_exec; | |
13329 | ||
13330 | /* Syscall catchpoints. */ | |
13331 | ops = &catch_syscall_breakpoint_ops; | |
13332 | *ops = base_breakpoint_ops; | |
13333 | ops->dtor = dtor_catch_syscall; | |
13334 | ops->insert_location = insert_catch_syscall; | |
13335 | ops->remove_location = remove_catch_syscall; | |
13336 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
13337 | ops->print_it = print_it_catch_syscall; | |
13338 | ops->print_one = print_one_catch_syscall; | |
13339 | ops->print_mention = print_mention_catch_syscall; | |
13340 | ops->print_recreate = print_recreate_catch_syscall; | |
13341 | } | |
13342 | ||
c906108c | 13343 | void |
fba45db2 | 13344 | _initialize_breakpoint (void) |
c906108c SS |
13345 | { |
13346 | struct cmd_list_element *c; | |
13347 | ||
2060206e PA |
13348 | initialize_breakpoint_ops (); |
13349 | ||
84acb35a | 13350 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 13351 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 13352 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 13353 | |
17450429 PP |
13354 | breakpoint_objfile_key = register_objfile_data (); |
13355 | ||
c906108c SS |
13356 | breakpoint_chain = 0; |
13357 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
13358 | before a breakpoint is set. */ | |
13359 | breakpoint_count = 0; | |
13360 | ||
1042e4c0 SS |
13361 | tracepoint_count = 0; |
13362 | ||
1bedd215 AC |
13363 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
13364 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
13365 | Usage is `ignore N COUNT'.")); | |
c906108c | 13366 | if (xdb_commands) |
c5aa993b | 13367 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 13368 | |
1bedd215 AC |
13369 | add_com ("commands", class_breakpoint, commands_command, _("\ |
13370 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
13371 | Give breakpoint number as argument after \"commands\".\n\ |
13372 | With no argument, the targeted breakpoint is the last one set.\n\ | |
13373 | The commands themselves follow starting on the next line.\n\ | |
13374 | Type a line containing \"end\" to indicate the end of them.\n\ | |
13375 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 13376 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 13377 | |
1bedd215 AC |
13378 | add_com ("condition", class_breakpoint, condition_command, _("\ |
13379 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 13380 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 13381 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 13382 | |
1bedd215 | 13383 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 13384 | Set a temporary breakpoint.\n\ |
c906108c SS |
13385 | Like \"break\" except the breakpoint is only temporary,\n\ |
13386 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
13387 | by using \"enable delete\" on the breakpoint number.\n\ |
13388 | \n" | |
13389 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 13390 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13391 | |
1bedd215 | 13392 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 13393 | Set a hardware assisted breakpoint.\n\ |
c906108c | 13394 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
13395 | some target hardware may not have this support.\n\ |
13396 | \n" | |
13397 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 13398 | set_cmd_completer (c, location_completer); |
c906108c | 13399 | |
1bedd215 | 13400 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 13401 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 13402 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
13403 | so it will be deleted when hit.\n\ |
13404 | \n" | |
13405 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 13406 | set_cmd_completer (c, location_completer); |
c906108c | 13407 | |
1bedd215 AC |
13408 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
13409 | Enable some breakpoints.\n\ | |
c906108c SS |
13410 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13411 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13412 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13413 | With a subcommand you can enable temporarily."), |
c906108c SS |
13414 | &enablelist, "enable ", 1, &cmdlist); |
13415 | if (xdb_commands) | |
1bedd215 AC |
13416 | add_com ("ab", class_breakpoint, enable_command, _("\ |
13417 | Enable some breakpoints.\n\ | |
c906108c SS |
13418 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13419 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13420 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13421 | With a subcommand you can enable temporarily.")); |
c906108c SS |
13422 | |
13423 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
13424 | ||
84951ab5 | 13425 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 13426 | Enable some breakpoints.\n\ |
c906108c SS |
13427 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13428 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13429 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 13430 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 13431 | |
1a966eab AC |
13432 | add_cmd ("once", no_class, enable_once_command, _("\ |
13433 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13434 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13435 | &enablebreaklist); |
13436 | ||
1a966eab AC |
13437 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13438 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13439 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13440 | &enablebreaklist); |
13441 | ||
1a966eab AC |
13442 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13443 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13444 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13445 | &enablelist); |
13446 | ||
1a966eab AC |
13447 | add_cmd ("once", no_class, enable_once_command, _("\ |
13448 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13449 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13450 | &enablelist); |
13451 | ||
1bedd215 AC |
13452 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
13453 | Disable some breakpoints.\n\ | |
c906108c SS |
13454 | Arguments are breakpoint numbers with spaces in between.\n\ |
13455 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13456 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
13457 | &disablelist, "disable ", 1, &cmdlist); |
13458 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
13459 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
13460 | if (xdb_commands) | |
1bedd215 AC |
13461 | add_com ("sb", class_breakpoint, disable_command, _("\ |
13462 | Disable some breakpoints.\n\ | |
c906108c SS |
13463 | Arguments are breakpoint numbers with spaces in between.\n\ |
13464 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13465 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 13466 | |
1a966eab AC |
13467 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
13468 | Disable some breakpoints.\n\ | |
c906108c SS |
13469 | Arguments are breakpoint numbers with spaces in between.\n\ |
13470 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13471 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 13472 | This command may be abbreviated \"disable\"."), |
c906108c SS |
13473 | &disablelist); |
13474 | ||
1bedd215 AC |
13475 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
13476 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13477 | Arguments are breakpoint numbers with spaces in between.\n\ |
13478 | To delete all breakpoints, give no argument.\n\ | |
13479 | \n\ | |
13480 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 13481 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
13482 | &deletelist, "delete ", 1, &cmdlist); |
13483 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 13484 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 13485 | if (xdb_commands) |
1bedd215 AC |
13486 | add_com ("db", class_breakpoint, delete_command, _("\ |
13487 | Delete some breakpoints.\n\ | |
c906108c | 13488 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 13489 | To delete all breakpoints, give no argument.\n")); |
c906108c | 13490 | |
1a966eab AC |
13491 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
13492 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13493 | Arguments are breakpoint numbers with spaces in between.\n\ |
13494 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 13495 | This command may be abbreviated \"delete\"."), |
c906108c SS |
13496 | &deletelist); |
13497 | ||
1bedd215 AC |
13498 | add_com ("clear", class_breakpoint, clear_command, _("\ |
13499 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
13500 | Argument may be line number, function name, or \"*\" and an address.\n\ |
13501 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
13502 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
13503 | If an address is specified, breakpoints at that address are cleared.\n\ |
13504 | \n\ | |
13505 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
13506 | is executing in.\n\ |
13507 | \n\ | |
1bedd215 | 13508 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 13509 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 13510 | |
1bedd215 | 13511 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
13512 | Set breakpoint at specified line or function.\n" |
13513 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 13514 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13515 | |
c906108c SS |
13516 | add_com_alias ("b", "break", class_run, 1); |
13517 | add_com_alias ("br", "break", class_run, 1); | |
13518 | add_com_alias ("bre", "break", class_run, 1); | |
13519 | add_com_alias ("brea", "break", class_run, 1); | |
13520 | ||
7681d515 PM |
13521 | if (xdb_commands) |
13522 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
13523 | |
13524 | if (dbx_commands) | |
13525 | { | |
1bedd215 AC |
13526 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
13527 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
13528 | &stoplist, "stop ", 1, &cmdlist); |
13529 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 13530 | _("Break in function or address."), &stoplist); |
c5aa993b | 13531 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 13532 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
13533 | add_com ("status", class_info, breakpoints_info, _("\ |
13534 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13535 | The \"Type\" column indicates one of:\n\ |
13536 | \tbreakpoint - normal breakpoint\n\ | |
13537 | \twatchpoint - watchpoint\n\ | |
13538 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13539 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13540 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13541 | address and file/line number respectively.\n\ |
13542 | \n\ | |
13543 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13544 | are set to the address of the last breakpoint listed unless the command\n\ |
13545 | is prefixed with \"server \".\n\n\ | |
c906108c | 13546 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13547 | breakpoint set.")); |
c906108c SS |
13548 | } |
13549 | ||
1bedd215 | 13550 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 13551 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
13552 | The \"Type\" column indicates one of:\n\ |
13553 | \tbreakpoint - normal breakpoint\n\ | |
13554 | \twatchpoint - watchpoint\n\ | |
13555 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13556 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13557 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13558 | address and file/line number respectively.\n\ |
13559 | \n\ | |
13560 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13561 | are set to the address of the last breakpoint listed unless the command\n\ |
13562 | is prefixed with \"server \".\n\n\ | |
c906108c | 13563 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13564 | breakpoint set.")); |
c906108c | 13565 | |
6b04bdb7 MS |
13566 | add_info_alias ("b", "breakpoints", 1); |
13567 | ||
c906108c | 13568 | if (xdb_commands) |
1bedd215 AC |
13569 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
13570 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13571 | The \"Type\" column indicates one of:\n\ |
13572 | \tbreakpoint - normal breakpoint\n\ | |
13573 | \twatchpoint - watchpoint\n\ | |
13574 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
13575 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
13576 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
13577 | address and file/line number respectively.\n\ |
13578 | \n\ | |
13579 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13580 | are set to the address of the last breakpoint listed unless the command\n\ |
13581 | is prefixed with \"server \".\n\n\ | |
c906108c | 13582 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 13583 | breakpoint set.")); |
c906108c | 13584 | |
1a966eab AC |
13585 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
13586 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
13587 | The \"Type\" column indicates one of:\n\ |
13588 | \tbreakpoint - normal breakpoint\n\ | |
13589 | \twatchpoint - watchpoint\n\ | |
13590 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
13591 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
13592 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
13593 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
13594 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
13595 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
13596 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
13597 | address and file/line number respectively.\n\ |
13598 | \n\ | |
13599 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
13600 | are set to the address of the last breakpoint listed unless the command\n\ |
13601 | is prefixed with \"server \".\n\n\ | |
c906108c | 13602 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 13603 | breakpoint set."), |
c906108c SS |
13604 | &maintenanceinfolist); |
13605 | ||
44feb3ce TT |
13606 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
13607 | Set catchpoints to catch events."), | |
13608 | &catch_cmdlist, "catch ", | |
13609 | 0/*allow-unknown*/, &cmdlist); | |
13610 | ||
13611 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
13612 | Set temporary catchpoints to catch events."), | |
13613 | &tcatch_cmdlist, "tcatch ", | |
13614 | 0/*allow-unknown*/, &cmdlist); | |
13615 | ||
13616 | /* Add catch and tcatch sub-commands. */ | |
13617 | add_catch_command ("catch", _("\ | |
13618 | Catch an exception, when caught.\n\ | |
13619 | With an argument, catch only exceptions with the given name."), | |
13620 | catch_catch_command, | |
a96d9b2e | 13621 | NULL, |
44feb3ce TT |
13622 | CATCH_PERMANENT, |
13623 | CATCH_TEMPORARY); | |
13624 | add_catch_command ("throw", _("\ | |
13625 | Catch an exception, when thrown.\n\ | |
13626 | With an argument, catch only exceptions with the given name."), | |
13627 | catch_throw_command, | |
a96d9b2e | 13628 | NULL, |
44feb3ce TT |
13629 | CATCH_PERMANENT, |
13630 | CATCH_TEMPORARY); | |
13631 | add_catch_command ("fork", _("Catch calls to fork."), | |
13632 | catch_fork_command_1, | |
a96d9b2e | 13633 | NULL, |
44feb3ce TT |
13634 | (void *) (uintptr_t) catch_fork_permanent, |
13635 | (void *) (uintptr_t) catch_fork_temporary); | |
13636 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
13637 | catch_fork_command_1, | |
a96d9b2e | 13638 | NULL, |
44feb3ce TT |
13639 | (void *) (uintptr_t) catch_vfork_permanent, |
13640 | (void *) (uintptr_t) catch_vfork_temporary); | |
13641 | add_catch_command ("exec", _("Catch calls to exec."), | |
13642 | catch_exec_command_1, | |
a96d9b2e SDJ |
13643 | NULL, |
13644 | CATCH_PERMANENT, | |
13645 | CATCH_TEMPORARY); | |
13646 | add_catch_command ("syscall", _("\ | |
13647 | Catch system calls by their names and/or numbers.\n\ | |
13648 | Arguments say which system calls to catch. If no arguments\n\ | |
13649 | are given, every system call will be caught.\n\ | |
13650 | Arguments, if given, should be one or more system call names\n\ | |
13651 | (if your system supports that), or system call numbers."), | |
13652 | catch_syscall_command_1, | |
13653 | catch_syscall_completer, | |
44feb3ce TT |
13654 | CATCH_PERMANENT, |
13655 | CATCH_TEMPORARY); | |
c5aa993b | 13656 | |
1bedd215 AC |
13657 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
13658 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13659 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 13660 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13661 | an expression changes.\n\ |
13662 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13663 | the memory to which it refers.")); | |
65d12d83 | 13664 | set_cmd_completer (c, expression_completer); |
c906108c | 13665 | |
1bedd215 AC |
13666 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
13667 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 13668 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 13669 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13670 | an expression is read.\n\ |
13671 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13672 | the memory to which it refers.")); | |
65d12d83 | 13673 | set_cmd_completer (c, expression_completer); |
c906108c | 13674 | |
1bedd215 AC |
13675 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
13676 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 13677 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 13678 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
13679 | an expression is either read or written.\n\ |
13680 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
13681 | the memory to which it refers.")); | |
65d12d83 | 13682 | set_cmd_completer (c, expression_completer); |
c906108c | 13683 | |
d77f58be | 13684 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 13685 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 13686 | |
920d2a44 AC |
13687 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
13688 | respond to changes - contrary to the description. */ | |
85c07804 AC |
13689 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
13690 | &can_use_hw_watchpoints, _("\ | |
13691 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
13692 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
13693 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
13694 | such is available. (However, any hardware watchpoints that were\n\ | |
13695 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
13696 | hardware.)"), |
13697 | NULL, | |
920d2a44 | 13698 | show_can_use_hw_watchpoints, |
85c07804 | 13699 | &setlist, &showlist); |
c906108c SS |
13700 | |
13701 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 13702 | |
1042e4c0 SS |
13703 | /* Tracepoint manipulation commands. */ |
13704 | ||
13705 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
13706 | Set a tracepoint at specified line or function.\n\ | |
13707 | \n" | |
13708 | BREAK_ARGS_HELP ("trace") "\n\ | |
13709 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13710 | set_cmd_completer (c, location_completer); | |
13711 | ||
13712 | add_com_alias ("tp", "trace", class_alias, 0); | |
13713 | add_com_alias ("tr", "trace", class_alias, 1); | |
13714 | add_com_alias ("tra", "trace", class_alias, 1); | |
13715 | add_com_alias ("trac", "trace", class_alias, 1); | |
13716 | ||
7a697b8d SS |
13717 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
13718 | Set a fast tracepoint at specified line or function.\n\ | |
13719 | \n" | |
13720 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
13721 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13722 | set_cmd_completer (c, location_completer); | |
13723 | ||
0fb4aa4b PA |
13724 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
13725 | Set a static tracepoint at specified line, function or marker.\n\ | |
13726 | \n\ | |
13727 | strace [LOCATION] [if CONDITION]\n\ | |
13728 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
13729 | or -m MARKER_ID.\n\ | |
13730 | If a line number is specified, probe the marker at start of code\n\ | |
13731 | for that line. If a function is specified, probe the marker at start\n\ | |
13732 | of code for that function. If an address is specified, probe the marker\n\ | |
13733 | at that exact address. If a marker id is specified, probe the marker\n\ | |
13734 | with that name. With no LOCATION, uses current execution address of\n\ | |
13735 | the selected stack frame.\n\ | |
13736 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
13737 | This collects arbitrary user data passed in the probe point call to the\n\ | |
13738 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
13739 | by printing the $_sdata variable like any other convenience variable.\n\ | |
13740 | \n\ | |
13741 | CONDITION is a boolean expression.\n\ | |
13742 | \n\ | |
d41c0fc8 PA |
13743 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
13744 | conditions are different.\n\ | |
0fb4aa4b PA |
13745 | \n\ |
13746 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
13747 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
13748 | set_cmd_completer (c, location_completer); | |
13749 | ||
1042e4c0 | 13750 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 13751 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
13752 | Convenience variable \"$tpnum\" contains the number of the\n\ |
13753 | last tracepoint set.")); | |
13754 | ||
13755 | add_info_alias ("tp", "tracepoints", 1); | |
13756 | ||
13757 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
13758 | Delete specified tracepoints.\n\ | |
13759 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13760 | No argument means delete all tracepoints."), | |
13761 | &deletelist); | |
13762 | ||
13763 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
13764 | Disable specified tracepoints.\n\ | |
13765 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13766 | No argument means disable all tracepoints."), | |
13767 | &disablelist); | |
13768 | deprecate_cmd (c, "disable"); | |
13769 | ||
13770 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
13771 | Enable specified tracepoints.\n\ | |
13772 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13773 | No argument means enable all tracepoints."), | |
13774 | &enablelist); | |
13775 | deprecate_cmd (c, "enable"); | |
13776 | ||
13777 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
13778 | Set the passcount for a tracepoint.\n\ | |
13779 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
13780 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
13781 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
13782 | ||
6149aea9 PA |
13783 | add_prefix_cmd ("save", class_breakpoint, save_command, |
13784 | _("Save breakpoint definitions as a script."), | |
13785 | &save_cmdlist, "save ", | |
13786 | 0/*allow-unknown*/, &cmdlist); | |
13787 | ||
13788 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
13789 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 13790 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
13791 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
13792 | session to restore them."), | |
13793 | &save_cmdlist); | |
13794 | set_cmd_completer (c, filename_completer); | |
13795 | ||
13796 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 13797 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
13798 | Use the 'source' command in another debug session to restore them."), |
13799 | &save_cmdlist); | |
1042e4c0 SS |
13800 | set_cmd_completer (c, filename_completer); |
13801 | ||
6149aea9 PA |
13802 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
13803 | deprecate_cmd (c, "save tracepoints"); | |
13804 | ||
1bedd215 | 13805 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13806 | Breakpoint specific settings\n\ |
13807 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13808 | pending breakpoint behavior"), |
fa8d40ab JJ |
13809 | &breakpoint_set_cmdlist, "set breakpoint ", |
13810 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 13811 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13812 | Breakpoint specific settings\n\ |
13813 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13814 | pending breakpoint behavior"), |
fa8d40ab JJ |
13815 | &breakpoint_show_cmdlist, "show breakpoint ", |
13816 | 0/*allow-unknown*/, &showlist); | |
13817 | ||
7915a72c AC |
13818 | add_setshow_auto_boolean_cmd ("pending", no_class, |
13819 | &pending_break_support, _("\ | |
13820 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
13821 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
13822 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
13823 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
13824 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 13825 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 13826 | NULL, |
920d2a44 | 13827 | show_pending_break_support, |
6e1d7d6c AC |
13828 | &breakpoint_set_cmdlist, |
13829 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
13830 | |
13831 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
13832 | |
13833 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
13834 | &automatic_hardware_breakpoints, _("\ | |
13835 | Set automatic usage of hardware breakpoints."), _("\ | |
13836 | Show automatic usage of hardware breakpoints."), _("\ | |
13837 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
13838 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
13839 | a warning will be emitted for such breakpoints."), | |
13840 | NULL, | |
13841 | show_automatic_hardware_breakpoints, | |
13842 | &breakpoint_set_cmdlist, | |
13843 | &breakpoint_show_cmdlist); | |
74960c60 | 13844 | |
33e5cbd6 PA |
13845 | add_setshow_enum_cmd ("always-inserted", class_support, |
13846 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
13847 | Set mode for inserting breakpoints."), _("\ |
13848 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
13849 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
13850 | resumed, and removed when execution stops. When this mode is on,\n\ | |
13851 | breakpoints are inserted immediately and removed only when the user\n\ | |
13852 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
13853 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
13854 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
13855 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
13856 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
13857 | NULL, |
13858 | &show_always_inserted_mode, | |
13859 | &breakpoint_set_cmdlist, | |
13860 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
13861 | |
13862 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
13863 | Set a breakpoint for an address range.\n\ | |
13864 | break-range START-LOCATION, END-LOCATION\n\ | |
13865 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
13866 | LINENUM, for that line in the current file,\n\ | |
13867 | FILE:LINENUM, for that line in that file,\n\ | |
13868 | +OFFSET, for that number of lines after the current line\n\ | |
13869 | or the start of the range\n\ | |
13870 | FUNCTION, for the first line in that function,\n\ | |
13871 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
13872 | *ADDRESS, for the instruction at that address.\n\ | |
13873 | \n\ | |
13874 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
13875 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
13876 | range (including START-LOCATION and END-LOCATION).")); | |
13877 | ||
765dc015 | 13878 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
13879 | |
13880 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 13881 | } |