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" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
65d79d4b | 64 | #include "parser-defs.h" |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
c906108c | 66 | |
1042e4c0 SS |
67 | /* readline include files */ |
68 | #include "readline/readline.h" | |
69 | #include "readline/history.h" | |
70 | ||
71 | /* readline defines this. */ | |
72 | #undef savestring | |
73 | ||
034dad6f | 74 | #include "mi/mi-common.h" |
104c1213 | 75 | |
44feb3ce TT |
76 | /* Arguments to pass as context to some catch command handlers. */ |
77 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
78 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 79 | |
4a64f543 | 80 | /* Prototypes for local functions. */ |
c906108c | 81 | |
a14ed312 | 82 | static void enable_delete_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void enable_once_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void disable_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void enable_command (char *, int); |
c906108c | 89 | |
95a42b64 TT |
90 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
91 | void *), | |
92 | void *); | |
c906108c | 93 | |
a14ed312 | 94 | static void ignore_command (char *, int); |
c906108c | 95 | |
4efb68b1 | 96 | static int breakpoint_re_set_one (void *); |
c906108c | 97 | |
a14ed312 | 98 | static void clear_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void catch_command (char *, int); |
c906108c | 101 | |
e09342b5 | 102 | static int can_use_hardware_watchpoint (struct value *, int); |
c906108c | 103 | |
98deb0da | 104 | static void break_command_1 (char *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void mention (struct breakpoint *); |
c906108c | 107 | |
4a64f543 MS |
108 | /* This function is used in gdbtk sources and thus can not be made |
109 | static. */ | |
63c252f8 | 110 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
a6d9a66e UW |
111 | struct symtab_and_line, |
112 | enum bptype); | |
c906108c | 113 | |
76897487 KB |
114 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
115 | ||
a6d9a66e UW |
116 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
117 | CORE_ADDR bpaddr, | |
88f7da05 | 118 | enum bptype bptype); |
76897487 | 119 | |
6c95b8df PA |
120 | static void describe_other_breakpoints (struct gdbarch *, |
121 | struct program_space *, CORE_ADDR, | |
5af949e3 | 122 | struct obj_section *, int); |
c906108c | 123 | |
6c95b8df PA |
124 | static int breakpoint_address_match (struct address_space *aspace1, |
125 | CORE_ADDR addr1, | |
126 | struct address_space *aspace2, | |
127 | CORE_ADDR addr2); | |
128 | ||
85d721b8 PA |
129 | static int watchpoint_locations_match (struct bp_location *loc1, |
130 | struct bp_location *loc2); | |
131 | ||
a14ed312 | 132 | static void breakpoints_info (char *, int); |
c906108c | 133 | |
d77f58be SS |
134 | static void watchpoints_info (char *, int); |
135 | ||
e5a67952 MS |
136 | static int breakpoint_1 (char *, int, |
137 | int (*) (const struct breakpoint *)); | |
c906108c | 138 | |
4efb68b1 | 139 | static int breakpoint_cond_eval (void *); |
c906108c | 140 | |
4efb68b1 | 141 | static void cleanup_executing_breakpoints (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void commands_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static void condition_command (char *, int); |
c906108c | 146 | |
c5aa993b JM |
147 | typedef enum |
148 | { | |
149 | mark_inserted, | |
150 | mark_uninserted | |
151 | } | |
152 | insertion_state_t; | |
c906108c | 153 | |
0bde7532 | 154 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 155 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 156 | |
a14ed312 | 157 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
158 | |
159 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 160 | |
4efb68b1 | 161 | static int watchpoint_check (void *); |
c906108c | 162 | |
a14ed312 | 163 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 168 | |
a14ed312 | 169 | static void hbreak_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void thbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 | 175 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 176 | |
a14ed312 | 177 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 182 | |
d85310f7 MS |
183 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
184 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 185 | |
a14ed312 | 186 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 187 | |
d03285ec UW |
188 | static void detach_single_step_breakpoints (void); |
189 | ||
6c95b8df PA |
190 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
191 | CORE_ADDR pc); | |
1aafd4da | 192 | |
fe3f5fa8 | 193 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
194 | static void incref_bp_location (struct bp_location *loc); |
195 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 196 | |
39d61571 | 197 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 198 | |
b60e7edf | 199 | static void update_global_location_list (int); |
a5606eee | 200 | |
b60e7edf | 201 | static void update_global_location_list_nothrow (int); |
74960c60 | 202 | |
d77f58be | 203 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 204 | |
d77f58be | 205 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 206 | |
74960c60 | 207 | static void insert_breakpoint_locations (void); |
a5606eee | 208 | |
a96d9b2e SDJ |
209 | static int syscall_catchpoint_p (struct breakpoint *b); |
210 | ||
1042e4c0 SS |
211 | static void tracepoints_info (char *, int); |
212 | ||
213 | static void delete_trace_command (char *, int); | |
214 | ||
215 | static void enable_trace_command (char *, int); | |
216 | ||
217 | static void disable_trace_command (char *, int); | |
218 | ||
219 | static void trace_pass_command (char *, int); | |
220 | ||
0fb4aa4b PA |
221 | /* Assuming we're creating a static tracepoint, does S look like a |
222 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
223 | #define is_marker_spec(s) \ | |
f5a8e22b | 224 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 225 | |
5cea2a26 PA |
226 | /* A reference-counted struct command_line. This lets multiple |
227 | breakpoints share a single command list. */ | |
228 | struct counted_command_line | |
229 | { | |
230 | /* The reference count. */ | |
231 | int refc; | |
232 | ||
233 | /* The command list. */ | |
234 | struct command_line *commands; | |
235 | }; | |
236 | ||
237 | struct command_line * | |
238 | breakpoint_commands (struct breakpoint *b) | |
239 | { | |
240 | return b->commands ? b->commands->commands : NULL; | |
241 | } | |
3daf8fe5 | 242 | |
f3b1572e PA |
243 | /* Flag indicating that a command has proceeded the inferior past the |
244 | current breakpoint. */ | |
245 | ||
246 | static int breakpoint_proceeded; | |
247 | ||
2cec12e5 AR |
248 | static const char * |
249 | bpdisp_text (enum bpdisp disp) | |
250 | { | |
4a64f543 MS |
251 | /* NOTE: the following values are a part of MI protocol and |
252 | represent values of 'disp' field returned when inferior stops at | |
253 | a breakpoint. */ | |
bc043ef3 | 254 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 255 | |
2cec12e5 AR |
256 | return bpdisps[(int) disp]; |
257 | } | |
c906108c | 258 | |
4a64f543 | 259 | /* Prototypes for exported functions. */ |
c906108c | 260 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 261 | if such is available. */ |
c906108c SS |
262 | static int can_use_hw_watchpoints; |
263 | ||
920d2a44 AC |
264 | static void |
265 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
266 | struct cmd_list_element *c, | |
267 | const char *value) | |
268 | { | |
3e43a32a MS |
269 | fprintf_filtered (file, |
270 | _("Debugger's willingness to use " | |
271 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
272 | value); |
273 | } | |
274 | ||
fa8d40ab JJ |
275 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
276 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 277 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
278 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
279 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
280 | static void |
281 | show_pending_break_support (struct ui_file *file, int from_tty, | |
282 | struct cmd_list_element *c, | |
283 | const char *value) | |
284 | { | |
3e43a32a MS |
285 | fprintf_filtered (file, |
286 | _("Debugger's behavior regarding " | |
287 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
288 | value); |
289 | } | |
fa8d40ab | 290 | |
765dc015 | 291 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 292 | set with "break" but falling in read-only memory. |
765dc015 VP |
293 | If 0, gdb will warn about such breakpoints, but won't automatically |
294 | use hardware breakpoints. */ | |
295 | static int automatic_hardware_breakpoints; | |
296 | static void | |
297 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
298 | struct cmd_list_element *c, | |
299 | const char *value) | |
300 | { | |
3e43a32a MS |
301 | fprintf_filtered (file, |
302 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
303 | value); |
304 | } | |
305 | ||
33e5cbd6 PA |
306 | /* If on, gdb will keep breakpoints inserted even as inferior is |
307 | stopped, and immediately insert any new breakpoints. If off, gdb | |
308 | will insert breakpoints into inferior only when resuming it, and | |
309 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
310 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
311 | ||
312 | static const char always_inserted_auto[] = "auto"; | |
313 | static const char always_inserted_on[] = "on"; | |
314 | static const char always_inserted_off[] = "off"; | |
315 | static const char *always_inserted_enums[] = { | |
316 | always_inserted_auto, | |
317 | always_inserted_off, | |
318 | always_inserted_on, | |
319 | NULL | |
320 | }; | |
321 | static const char *always_inserted_mode = always_inserted_auto; | |
322 | static void | |
74960c60 | 323 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 324 | struct cmd_list_element *c, const char *value) |
74960c60 | 325 | { |
33e5cbd6 | 326 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
327 | fprintf_filtered (file, |
328 | _("Always inserted breakpoint " | |
329 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
330 | value, |
331 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
332 | else | |
3e43a32a MS |
333 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
334 | value); | |
74960c60 VP |
335 | } |
336 | ||
33e5cbd6 PA |
337 | int |
338 | breakpoints_always_inserted_mode (void) | |
339 | { | |
340 | return (always_inserted_mode == always_inserted_on | |
341 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
342 | } | |
765dc015 | 343 | |
a14ed312 | 344 | void _initialize_breakpoint (void); |
c906108c | 345 | |
c906108c SS |
346 | /* Are we executing breakpoint commands? */ |
347 | static int executing_breakpoint_commands; | |
348 | ||
c02f5703 MS |
349 | /* Are overlay event breakpoints enabled? */ |
350 | static int overlay_events_enabled; | |
351 | ||
e09342b5 TJB |
352 | /* See description in breakpoint.h. */ |
353 | int target_exact_watchpoints = 0; | |
354 | ||
c906108c | 355 | /* Walk the following statement or block through all breakpoints. |
4a64f543 MS |
356 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the |
357 | current breakpoint. */ | |
c906108c | 358 | |
5c44784c | 359 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 360 | |
5c44784c JM |
361 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
362 | for (B = breakpoint_chain; \ | |
363 | B ? (TMP=B->next, 1): 0; \ | |
364 | B = TMP) | |
c906108c | 365 | |
4a64f543 MS |
366 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
367 | not provided so update_global_location_list must not be called | |
368 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 369 | |
876fa593 JK |
370 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
371 | for (BP_TMP = bp_location; \ | |
372 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
373 | BP_TMP++) | |
7cc221ef | 374 | |
1042e4c0 SS |
375 | /* Iterator for tracepoints only. */ |
376 | ||
377 | #define ALL_TRACEPOINTS(B) \ | |
378 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 379 | if (is_tracepoint (B)) |
1042e4c0 | 380 | |
7cc221ef | 381 | /* Chains of all breakpoints defined. */ |
c906108c SS |
382 | |
383 | struct breakpoint *breakpoint_chain; | |
384 | ||
876fa593 JK |
385 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
386 | ||
387 | static struct bp_location **bp_location; | |
388 | ||
389 | /* Number of elements of BP_LOCATION. */ | |
390 | ||
391 | static unsigned bp_location_count; | |
392 | ||
4a64f543 MS |
393 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
394 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
395 | result from bp_location_has_shadow. You can use it for roughly | |
396 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
397 | an address you need to read. */ | |
876fa593 JK |
398 | |
399 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
400 | ||
4a64f543 MS |
401 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
402 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
403 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
404 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
405 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
406 | |
407 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 408 | |
4a64f543 MS |
409 | /* The locations that no longer correspond to any breakpoint, unlinked |
410 | from bp_location array, but for which a hit may still be reported | |
411 | by a target. */ | |
20874c92 VP |
412 | VEC(bp_location_p) *moribund_locations = NULL; |
413 | ||
c906108c SS |
414 | /* Number of last breakpoint made. */ |
415 | ||
95a42b64 TT |
416 | static int breakpoint_count; |
417 | ||
86b17b60 PA |
418 | /* The value of `breakpoint_count' before the last command that |
419 | created breakpoints. If the last (break-like) command created more | |
420 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
421 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
422 | static int prev_breakpoint_count; | |
c906108c | 423 | |
1042e4c0 SS |
424 | /* Number of last tracepoint made. */ |
425 | ||
95a42b64 | 426 | static int tracepoint_count; |
1042e4c0 | 427 | |
6149aea9 PA |
428 | static struct cmd_list_element *breakpoint_set_cmdlist; |
429 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 430 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 431 | |
468d015d JJ |
432 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
433 | static int | |
434 | breakpoint_enabled (struct breakpoint *b) | |
435 | { | |
0d381245 | 436 | return (b->enable_state == bp_enabled); |
468d015d JJ |
437 | } |
438 | ||
c906108c SS |
439 | /* Set breakpoint count to NUM. */ |
440 | ||
95a42b64 | 441 | static void |
fba45db2 | 442 | set_breakpoint_count (int num) |
c906108c | 443 | { |
86b17b60 | 444 | prev_breakpoint_count = breakpoint_count; |
c906108c | 445 | breakpoint_count = num; |
4fa62494 | 446 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
447 | } |
448 | ||
86b17b60 PA |
449 | /* Used by `start_rbreak_breakpoints' below, to record the current |
450 | breakpoint count before "rbreak" creates any breakpoint. */ | |
451 | static int rbreak_start_breakpoint_count; | |
452 | ||
95a42b64 TT |
453 | /* Called at the start an "rbreak" command to record the first |
454 | breakpoint made. */ | |
86b17b60 | 455 | |
95a42b64 TT |
456 | void |
457 | start_rbreak_breakpoints (void) | |
458 | { | |
86b17b60 | 459 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
460 | } |
461 | ||
462 | /* Called at the end of an "rbreak" command to record the last | |
463 | breakpoint made. */ | |
86b17b60 | 464 | |
95a42b64 TT |
465 | void |
466 | end_rbreak_breakpoints (void) | |
467 | { | |
86b17b60 | 468 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
469 | } |
470 | ||
4a64f543 | 471 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
472 | |
473 | void | |
fba45db2 | 474 | clear_breakpoint_hit_counts (void) |
c906108c SS |
475 | { |
476 | struct breakpoint *b; | |
477 | ||
478 | ALL_BREAKPOINTS (b) | |
479 | b->hit_count = 0; | |
480 | } | |
481 | ||
9add0f1b TT |
482 | /* Allocate a new counted_command_line with reference count of 1. |
483 | The new structure owns COMMANDS. */ | |
484 | ||
485 | static struct counted_command_line * | |
486 | alloc_counted_command_line (struct command_line *commands) | |
487 | { | |
488 | struct counted_command_line *result | |
489 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 490 | |
9add0f1b TT |
491 | result->refc = 1; |
492 | result->commands = commands; | |
493 | return result; | |
494 | } | |
495 | ||
496 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
497 | ||
498 | static void | |
499 | incref_counted_command_line (struct counted_command_line *cmd) | |
500 | { | |
501 | if (cmd) | |
502 | ++cmd->refc; | |
503 | } | |
504 | ||
505 | /* Decrement reference count. If the reference count reaches 0, | |
506 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
507 | nothing if *CMDP is NULL. */ | |
508 | ||
509 | static void | |
510 | decref_counted_command_line (struct counted_command_line **cmdp) | |
511 | { | |
512 | if (*cmdp) | |
513 | { | |
514 | if (--(*cmdp)->refc == 0) | |
515 | { | |
516 | free_command_lines (&(*cmdp)->commands); | |
517 | xfree (*cmdp); | |
518 | } | |
519 | *cmdp = NULL; | |
520 | } | |
521 | } | |
522 | ||
523 | /* A cleanup function that calls decref_counted_command_line. */ | |
524 | ||
525 | static void | |
526 | do_cleanup_counted_command_line (void *arg) | |
527 | { | |
528 | decref_counted_command_line (arg); | |
529 | } | |
530 | ||
531 | /* Create a cleanup that calls decref_counted_command_line on the | |
532 | argument. */ | |
533 | ||
534 | static struct cleanup * | |
535 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
536 | { | |
537 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
538 | } | |
539 | ||
c906108c SS |
540 | /* Default address, symtab and line to put a breakpoint at |
541 | for "break" command with no arg. | |
4a64f543 | 542 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
543 | not valid, and "break" with no arg is an error. |
544 | ||
545 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
546 | ||
547 | int default_breakpoint_valid; | |
548 | CORE_ADDR default_breakpoint_address; | |
549 | struct symtab *default_breakpoint_symtab; | |
550 | int default_breakpoint_line; | |
6c95b8df PA |
551 | struct program_space *default_breakpoint_pspace; |
552 | ||
c906108c | 553 | \f |
48cb2d85 VP |
554 | /* Return the breakpoint with the specified number, or NULL |
555 | if the number does not refer to an existing breakpoint. */ | |
556 | ||
557 | struct breakpoint * | |
558 | get_breakpoint (int num) | |
559 | { | |
560 | struct breakpoint *b; | |
561 | ||
562 | ALL_BREAKPOINTS (b) | |
563 | if (b->number == num) | |
564 | return b; | |
565 | ||
566 | return NULL; | |
567 | } | |
5c44784c | 568 | |
c906108c | 569 | \f |
adc36818 PM |
570 | |
571 | void | |
572 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
573 | int from_tty) | |
574 | { | |
575 | struct bp_location *loc = b->loc; | |
576 | ||
577 | for (; loc; loc = loc->next) | |
578 | { | |
579 | xfree (loc->cond); | |
580 | loc->cond = NULL; | |
581 | } | |
582 | xfree (b->cond_string); | |
583 | b->cond_string = NULL; | |
584 | xfree (b->cond_exp); | |
585 | b->cond_exp = NULL; | |
586 | ||
587 | if (*exp == 0) | |
588 | { | |
589 | if (from_tty) | |
590 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
591 | } | |
592 | else | |
593 | { | |
594 | char *arg = exp; | |
cc59ec59 | 595 | |
adc36818 PM |
596 | /* I don't know if it matters whether this is the string the user |
597 | typed in or the decompiled expression. */ | |
598 | b->cond_string = xstrdup (arg); | |
599 | b->condition_not_parsed = 0; | |
600 | ||
601 | if (is_watchpoint (b)) | |
602 | { | |
603 | innermost_block = NULL; | |
604 | arg = exp; | |
605 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
606 | if (*arg) | |
607 | error (_("Junk at end of expression")); | |
608 | b->cond_exp_valid_block = innermost_block; | |
609 | } | |
610 | else | |
611 | { | |
612 | for (loc = b->loc; loc; loc = loc->next) | |
613 | { | |
614 | arg = exp; | |
615 | loc->cond = | |
616 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
617 | if (*arg) | |
618 | error (_("Junk at end of expression")); | |
619 | } | |
620 | } | |
621 | } | |
622 | breakpoints_changed (); | |
623 | observer_notify_breakpoint_modified (b->number); | |
624 | } | |
625 | ||
c906108c SS |
626 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
627 | ||
628 | static void | |
fba45db2 | 629 | condition_command (char *arg, int from_tty) |
c906108c | 630 | { |
52f0bd74 | 631 | struct breakpoint *b; |
c906108c | 632 | char *p; |
52f0bd74 | 633 | int bnum; |
c906108c SS |
634 | |
635 | if (arg == 0) | |
e2e0b3e5 | 636 | error_no_arg (_("breakpoint number")); |
c906108c SS |
637 | |
638 | p = arg; | |
639 | bnum = get_number (&p); | |
5c44784c | 640 | if (bnum == 0) |
8a3fe4f8 | 641 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
642 | |
643 | ALL_BREAKPOINTS (b) | |
644 | if (b->number == bnum) | |
2f069f6f | 645 | { |
2566ad2d | 646 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
647 | return; |
648 | } | |
c906108c | 649 | |
8a3fe4f8 | 650 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
651 | } |
652 | ||
a7bdde9e VP |
653 | /* Check that COMMAND do not contain commands that are suitable |
654 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
655 | Throw if any such commands is found. */ |
656 | ||
a7bdde9e VP |
657 | static void |
658 | check_no_tracepoint_commands (struct command_line *commands) | |
659 | { | |
660 | struct command_line *c; | |
cc59ec59 | 661 | |
a7bdde9e VP |
662 | for (c = commands; c; c = c->next) |
663 | { | |
664 | int i; | |
665 | ||
666 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
667 | error (_("The 'while-stepping' command can " |
668 | "only be used for tracepoints")); | |
a7bdde9e VP |
669 | |
670 | for (i = 0; i < c->body_count; ++i) | |
671 | check_no_tracepoint_commands ((c->body_list)[i]); | |
672 | ||
673 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 674 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
675 | command directly. */ |
676 | if (strstr (c->line, "collect ") == c->line) | |
677 | error (_("The 'collect' command can only be used for tracepoints")); | |
678 | ||
51661e93 VP |
679 | if (strstr (c->line, "teval ") == c->line) |
680 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
681 | } |
682 | } | |
683 | ||
d77f58be SS |
684 | /* Encapsulate tests for different types of tracepoints. */ |
685 | ||
a7bdde9e | 686 | int |
d77f58be | 687 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 688 | { |
0fb4aa4b PA |
689 | return (b->type == bp_tracepoint |
690 | || b->type == bp_fast_tracepoint | |
691 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 692 | } |
d77f58be | 693 | |
95a42b64 TT |
694 | /* A helper function that validsates that COMMANDS are valid for a |
695 | breakpoint. This function will throw an exception if a problem is | |
696 | found. */ | |
48cb2d85 | 697 | |
95a42b64 TT |
698 | static void |
699 | validate_commands_for_breakpoint (struct breakpoint *b, | |
700 | struct command_line *commands) | |
48cb2d85 | 701 | { |
d77f58be | 702 | if (is_tracepoint (b)) |
a7bdde9e | 703 | { |
4a64f543 MS |
704 | /* We need to verify that each top-level element of commands is |
705 | valid for tracepoints, that there's at most one | |
706 | while-stepping element, and that while-stepping's body has | |
707 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
708 | struct command_line *c; |
709 | struct command_line *while_stepping = 0; | |
710 | for (c = commands; c; c = c->next) | |
711 | { | |
a7bdde9e VP |
712 | if (c->control_type == while_stepping_control) |
713 | { | |
714 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
715 | error (_("The 'while-stepping' command " |
716 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 717 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
718 | error (_("The 'while-stepping' command " |
719 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
720 | |
721 | if (while_stepping) | |
3e43a32a MS |
722 | error (_("The 'while-stepping' command " |
723 | "can be used only once")); | |
a7bdde9e VP |
724 | else |
725 | while_stepping = c; | |
726 | } | |
727 | } | |
728 | if (while_stepping) | |
729 | { | |
730 | struct command_line *c2; | |
731 | ||
732 | gdb_assert (while_stepping->body_count == 1); | |
733 | c2 = while_stepping->body_list[0]; | |
734 | for (; c2; c2 = c2->next) | |
735 | { | |
a7bdde9e VP |
736 | if (c2->control_type == while_stepping_control) |
737 | error (_("The 'while-stepping' command cannot be nested")); | |
738 | } | |
739 | } | |
740 | } | |
741 | else | |
742 | { | |
743 | check_no_tracepoint_commands (commands); | |
744 | } | |
95a42b64 TT |
745 | } |
746 | ||
0fb4aa4b PA |
747 | /* Return a vector of all the static tracepoints set at ADDR. The |
748 | caller is responsible for releasing the vector. */ | |
749 | ||
750 | VEC(breakpoint_p) * | |
751 | static_tracepoints_here (CORE_ADDR addr) | |
752 | { | |
753 | struct breakpoint *b; | |
754 | VEC(breakpoint_p) *found = 0; | |
755 | struct bp_location *loc; | |
756 | ||
757 | ALL_BREAKPOINTS (b) | |
758 | if (b->type == bp_static_tracepoint) | |
759 | { | |
760 | for (loc = b->loc; loc; loc = loc->next) | |
761 | if (loc->address == addr) | |
762 | VEC_safe_push(breakpoint_p, found, b); | |
763 | } | |
764 | ||
765 | return found; | |
766 | } | |
767 | ||
95a42b64 | 768 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 769 | validate that only allowed commands are included. */ |
95a42b64 TT |
770 | |
771 | void | |
4a64f543 MS |
772 | breakpoint_set_commands (struct breakpoint *b, |
773 | struct command_line *commands) | |
95a42b64 TT |
774 | { |
775 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 776 | |
9add0f1b TT |
777 | decref_counted_command_line (&b->commands); |
778 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
779 | breakpoints_changed (); |
780 | observer_notify_breakpoint_modified (b->number); | |
781 | } | |
782 | ||
45a43567 TT |
783 | /* Set the internal `silent' flag on the breakpoint. Note that this |
784 | is not the same as the "silent" that may appear in the breakpoint's | |
785 | commands. */ | |
786 | ||
787 | void | |
788 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
789 | { | |
790 | int old_silent = b->silent; | |
791 | ||
792 | b->silent = silent; | |
793 | if (old_silent != silent) | |
794 | observer_notify_breakpoint_modified (b->number); | |
795 | } | |
796 | ||
797 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
798 | breakpoint work for any thread. */ | |
799 | ||
800 | void | |
801 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
802 | { | |
803 | int old_thread = b->thread; | |
804 | ||
805 | b->thread = thread; | |
806 | if (old_thread != thread) | |
807 | observer_notify_breakpoint_modified (b->number); | |
808 | } | |
809 | ||
810 | /* Set the task for this breakpoint. If TASK is 0, make the | |
811 | breakpoint work for any task. */ | |
812 | ||
813 | void | |
814 | breakpoint_set_task (struct breakpoint *b, int task) | |
815 | { | |
816 | int old_task = b->task; | |
817 | ||
818 | b->task = task; | |
819 | if (old_task != task) | |
820 | observer_notify_breakpoint_modified (b->number); | |
821 | } | |
822 | ||
95a42b64 TT |
823 | void |
824 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
825 | { |
826 | struct breakpoint *b = closure; | |
cc59ec59 | 827 | |
a7bdde9e VP |
828 | validate_actionline (&line, b); |
829 | } | |
830 | ||
95a42b64 TT |
831 | /* A structure used to pass information through |
832 | map_breakpoint_numbers. */ | |
833 | ||
834 | struct commands_info | |
835 | { | |
836 | /* True if the command was typed at a tty. */ | |
837 | int from_tty; | |
86b17b60 PA |
838 | |
839 | /* The breakpoint range spec. */ | |
840 | char *arg; | |
841 | ||
95a42b64 TT |
842 | /* Non-NULL if the body of the commands are being read from this |
843 | already-parsed command. */ | |
844 | struct command_line *control; | |
86b17b60 | 845 | |
95a42b64 TT |
846 | /* The command lines read from the user, or NULL if they have not |
847 | yet been read. */ | |
848 | struct counted_command_line *cmd; | |
849 | }; | |
850 | ||
851 | /* A callback for map_breakpoint_numbers that sets the commands for | |
852 | commands_command. */ | |
853 | ||
c906108c | 854 | static void |
95a42b64 | 855 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 856 | { |
95a42b64 | 857 | struct commands_info *info = data; |
c906108c | 858 | |
95a42b64 TT |
859 | if (info->cmd == NULL) |
860 | { | |
861 | struct command_line *l; | |
5c44784c | 862 | |
95a42b64 TT |
863 | if (info->control != NULL) |
864 | l = copy_command_lines (info->control->body_list[0]); | |
865 | else | |
86b17b60 PA |
866 | { |
867 | struct cleanup *old_chain; | |
868 | char *str; | |
c5aa993b | 869 | |
3e43a32a MS |
870 | str = xstrprintf (_("Type commands for breakpoint(s) " |
871 | "%s, one per line."), | |
86b17b60 PA |
872 | info->arg); |
873 | ||
874 | old_chain = make_cleanup (xfree, str); | |
875 | ||
876 | l = read_command_lines (str, | |
877 | info->from_tty, 1, | |
d77f58be | 878 | (is_tracepoint (b) |
86b17b60 PA |
879 | ? check_tracepoint_command : 0), |
880 | b); | |
881 | ||
882 | do_cleanups (old_chain); | |
883 | } | |
a7bdde9e | 884 | |
95a42b64 TT |
885 | info->cmd = alloc_counted_command_line (l); |
886 | } | |
887 | ||
888 | /* If a breakpoint was on the list more than once, we don't need to | |
889 | do anything. */ | |
890 | if (b->commands != info->cmd) | |
891 | { | |
892 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
893 | incref_counted_command_line (info->cmd); | |
894 | decref_counted_command_line (&b->commands); | |
895 | b->commands = info->cmd; | |
896 | breakpoints_changed (); | |
897 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 898 | } |
95a42b64 TT |
899 | } |
900 | ||
901 | static void | |
4a64f543 MS |
902 | commands_command_1 (char *arg, int from_tty, |
903 | struct command_line *control) | |
95a42b64 TT |
904 | { |
905 | struct cleanup *cleanups; | |
906 | struct commands_info info; | |
907 | ||
908 | info.from_tty = from_tty; | |
909 | info.control = control; | |
910 | info.cmd = NULL; | |
911 | /* If we read command lines from the user, then `info' will hold an | |
912 | extra reference to the commands that we must clean up. */ | |
913 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
914 | ||
915 | if (arg == NULL || !*arg) | |
916 | { | |
86b17b60 | 917 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
918 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
919 | breakpoint_count); | |
95a42b64 TT |
920 | else if (breakpoint_count > 0) |
921 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
922 | else |
923 | { | |
924 | /* So that we don't try to free the incoming non-NULL | |
925 | argument in the cleanup below. Mapping breakpoint | |
926 | numbers will fail in this case. */ | |
927 | arg = NULL; | |
928 | } | |
95a42b64 | 929 | } |
9766ced4 SS |
930 | else |
931 | /* The command loop has some static state, so we need to preserve | |
932 | our argument. */ | |
933 | arg = xstrdup (arg); | |
86b17b60 PA |
934 | |
935 | if (arg != NULL) | |
936 | make_cleanup (xfree, arg); | |
937 | ||
938 | info.arg = arg; | |
95a42b64 TT |
939 | |
940 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
941 | ||
942 | if (info.cmd == NULL) | |
943 | error (_("No breakpoints specified.")); | |
944 | ||
945 | do_cleanups (cleanups); | |
946 | } | |
947 | ||
948 | static void | |
949 | commands_command (char *arg, int from_tty) | |
950 | { | |
951 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 952 | } |
40c03ae8 EZ |
953 | |
954 | /* Like commands_command, but instead of reading the commands from | |
955 | input stream, takes them from an already parsed command structure. | |
956 | ||
957 | This is used by cli-script.c to DTRT with breakpoint commands | |
958 | that are part of if and while bodies. */ | |
959 | enum command_control_type | |
960 | commands_from_control_command (char *arg, struct command_line *cmd) | |
961 | { | |
95a42b64 TT |
962 | commands_command_1 (arg, 0, cmd); |
963 | return simple_control; | |
40c03ae8 | 964 | } |
876fa593 JK |
965 | |
966 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
967 | ||
968 | static int | |
969 | bp_location_has_shadow (struct bp_location *bl) | |
970 | { | |
971 | if (bl->loc_type != bp_loc_software_breakpoint) | |
972 | return 0; | |
973 | if (!bl->inserted) | |
974 | return 0; | |
975 | if (bl->target_info.shadow_len == 0) | |
976 | /* bp isn't valid, or doesn't shadow memory. */ | |
977 | return 0; | |
978 | return 1; | |
979 | } | |
980 | ||
8defab1a | 981 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
982 | by replacing any memory breakpoints with their shadowed contents. |
983 | ||
984 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
985 | bl->address - bp_location_placed_address_before_address_max |
986 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
987 | The range we were requested to resolve shadows for is: |
988 | memaddr ... memaddr + len | |
989 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
990 | memaddr + len <= (bl->address |
991 | - bp_location_placed_address_before_address_max) | |
876fa593 | 992 | and: |
35df4500 | 993 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 994 | |
8defab1a DJ |
995 | void |
996 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 997 | { |
4a64f543 MS |
998 | /* Left boundary, right boundary and median element of our binary |
999 | search. */ | |
876fa593 JK |
1000 | unsigned bc_l, bc_r, bc; |
1001 | ||
4a64f543 MS |
1002 | /* Find BC_L which is a leftmost element which may affect BUF |
1003 | content. It is safe to report lower value but a failure to | |
1004 | report higher one. */ | |
876fa593 JK |
1005 | |
1006 | bc_l = 0; | |
1007 | bc_r = bp_location_count; | |
1008 | while (bc_l + 1 < bc_r) | |
1009 | { | |
35df4500 | 1010 | struct bp_location *bl; |
876fa593 JK |
1011 | |
1012 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1013 | bl = bp_location[bc]; |
876fa593 | 1014 | |
4a64f543 MS |
1015 | /* Check first BL->ADDRESS will not overflow due to the added |
1016 | constant. Then advance the left boundary only if we are sure | |
1017 | the BC element can in no way affect the BUF content (MEMADDR | |
1018 | to MEMADDR + LEN range). | |
876fa593 | 1019 | |
4a64f543 MS |
1020 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1021 | offset so that we cannot miss a breakpoint with its shadow | |
1022 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1023 | |
35df4500 TJB |
1024 | if ((bl->address + bp_location_shadow_len_after_address_max |
1025 | >= bl->address) | |
1026 | && (bl->address + bp_location_shadow_len_after_address_max | |
1027 | <= memaddr)) | |
876fa593 JK |
1028 | bc_l = bc; |
1029 | else | |
1030 | bc_r = bc; | |
1031 | } | |
1032 | ||
128070bb PA |
1033 | /* Due to the binary search above, we need to make sure we pick the |
1034 | first location that's at BC_L's address. E.g., if there are | |
1035 | multiple locations at the same address, BC_L may end up pointing | |
1036 | at a duplicate location, and miss the "master"/"inserted" | |
1037 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1038 | B: | |
1039 | ||
1040 | L1@A, L2@A, L3@B, ... | |
1041 | ||
1042 | BC_L could end up pointing at location L2, while the "master" | |
1043 | location could be L1. Since the `loc->inserted' flag is only set | |
1044 | on "master" locations, we'd forget to restore the shadow of L1 | |
1045 | and L2. */ | |
1046 | while (bc_l > 0 | |
1047 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1048 | bc_l--; | |
1049 | ||
876fa593 JK |
1050 | /* Now do full processing of the found relevant range of elements. */ |
1051 | ||
1052 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1053 | { |
35df4500 | 1054 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1055 | CORE_ADDR bp_addr = 0; |
1056 | int bp_size = 0; | |
1057 | int bptoffset = 0; | |
1058 | ||
35df4500 TJB |
1059 | /* bp_location array has BL->OWNER always non-NULL. */ |
1060 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1061 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1062 | bl->owner->number); |
ffce0d52 | 1063 | |
876fa593 JK |
1064 | /* Performance optimization: any futher element can no longer affect BUF |
1065 | content. */ | |
1066 | ||
35df4500 TJB |
1067 | if (bl->address >= bp_location_placed_address_before_address_max |
1068 | && memaddr + len <= (bl->address | |
1069 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1070 | break; |
1071 | ||
35df4500 | 1072 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1073 | continue; |
35df4500 | 1074 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1075 | current_program_space->aspace, 0)) |
1076 | continue; | |
1077 | ||
c5aa993b JM |
1078 | /* Addresses and length of the part of the breakpoint that |
1079 | we need to copy. */ | |
35df4500 TJB |
1080 | bp_addr = bl->target_info.placed_address; |
1081 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1082 | |
c5aa993b JM |
1083 | if (bp_addr + bp_size <= memaddr) |
1084 | /* The breakpoint is entirely before the chunk of memory we | |
1085 | are reading. */ | |
1086 | continue; | |
8defab1a | 1087 | |
c5aa993b JM |
1088 | if (bp_addr >= memaddr + len) |
1089 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1090 | reading. */ |
c5aa993b | 1091 | continue; |
c5aa993b | 1092 | |
8defab1a DJ |
1093 | /* Offset within shadow_contents. */ |
1094 | if (bp_addr < memaddr) | |
1095 | { | |
1096 | /* Only copy the second part of the breakpoint. */ | |
1097 | bp_size -= memaddr - bp_addr; | |
1098 | bptoffset = memaddr - bp_addr; | |
1099 | bp_addr = memaddr; | |
1100 | } | |
c5aa993b | 1101 | |
8defab1a DJ |
1102 | if (bp_addr + bp_size > memaddr + len) |
1103 | { | |
1104 | /* Only copy the first part of the breakpoint. */ | |
1105 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1106 | } | |
c5aa993b | 1107 | |
8defab1a | 1108 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1109 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1110 | } |
c906108c | 1111 | } |
c906108c | 1112 | \f |
c5aa993b | 1113 | |
60e1c644 PA |
1114 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1115 | ||
a5606eee | 1116 | static int |
d77f58be | 1117 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1118 | { |
1119 | return (bpt->type == bp_hardware_watchpoint | |
1120 | || bpt->type == bp_read_watchpoint | |
1121 | || bpt->type == bp_access_watchpoint); | |
1122 | } | |
7270d8f2 | 1123 | |
60e1c644 PA |
1124 | /* Return true if BPT is of any watchpoint kind, hardware or |
1125 | software. */ | |
1126 | ||
1127 | static int | |
d77f58be | 1128 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1129 | { |
1130 | return (is_hardware_watchpoint (bpt) | |
1131 | || bpt->type == bp_watchpoint); | |
1132 | } | |
1133 | ||
f6bc2008 PA |
1134 | /* Assuming that B is a watchpoint: returns true if the current thread |
1135 | and its running state are safe to evaluate or update watchpoint B. | |
1136 | Watchpoints on local expressions need to be evaluated in the | |
1137 | context of the thread that was current when the watchpoint was | |
1138 | created, and, that thread needs to be stopped to be able to select | |
1139 | the correct frame context. Watchpoints on global expressions can | |
1140 | be evaluated on any thread, and in any state. It is presently left | |
1141 | to the target allowing memory accesses when threads are | |
1142 | running. */ | |
1143 | ||
1144 | static int | |
1145 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1146 | { | |
1147 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1148 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1149 | && !is_executing (inferior_ptid))); | |
1150 | } | |
1151 | ||
567e1b4e JB |
1152 | /* Assuming that B is a watchpoint: |
1153 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1154 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1155 | - Evaluate the condition if there is one, and store the result |
1156 | in b->loc->cond. | |
a5606eee VP |
1157 | - Update the list of values that must be watched in B->loc. |
1158 | ||
4a64f543 MS |
1159 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1160 | nothing. If this is local watchpoint that is out of scope, delete | |
1161 | it. | |
1162 | ||
1163 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1164 | removed + inserted on each stop here. Normal breakpoints must | |
1165 | never be removed because they might be missed by a running thread | |
1166 | when debugging in non-stop mode. On the other hand, hardware | |
1167 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1168 | to each LWP since they are stored in each LWP's hardware debug | |
1169 | registers. Therefore, such LWP must be stopped first in order to | |
1170 | be able to modify its hardware watchpoints. | |
1171 | ||
1172 | Hardware watchpoints must be reset exactly once after being | |
1173 | presented to the user. It cannot be done sooner, because it would | |
1174 | reset the data used to present the watchpoint hit to the user. And | |
1175 | it must not be done later because it could display the same single | |
1176 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1177 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1178 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1179 | not user-visible - its hit is suppressed if the memory content has | |
1180 | not changed. | |
1181 | ||
1182 | The following constraints influence the location where we can reset | |
1183 | hardware watchpoints: | |
1184 | ||
1185 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1186 | called several times when GDB stops. | |
1187 | ||
1188 | [linux] | |
1189 | * Multiple hardware watchpoints can be hit at the same time, | |
1190 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1191 | hit at a time as the reason for stopping, and all the other hits | |
1192 | are presented later, one after the other, each time the user | |
1193 | requests the execution to be resumed. Execution is not resumed | |
1194 | for the threads still having pending hit event stored in | |
1195 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1196 | the inferior on the first stop the thread hit event is kept being | |
1197 | reported from its cached value by linux_nat_stopped_data_address | |
1198 | until the real thread resume happens after the watchpoint gets | |
1199 | presented and thus its LWP_INFO->STATUS gets reset. | |
1200 | ||
1201 | Therefore the hardware watchpoint hit can get safely reset on the | |
1202 | watchpoint removal from inferior. */ | |
a79d3c27 | 1203 | |
b40ce68a | 1204 | static void |
a5606eee | 1205 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1206 | { |
a5606eee | 1207 | int within_current_scope; |
a5606eee | 1208 | struct frame_id saved_frame_id; |
66076460 | 1209 | int frame_saved; |
a5606eee | 1210 | |
f6bc2008 PA |
1211 | /* If this is a local watchpoint, we only want to check if the |
1212 | watchpoint frame is in scope if the current thread is the thread | |
1213 | that was used to create the watchpoint. */ | |
1214 | if (!watchpoint_in_thread_scope (b)) | |
1215 | return; | |
1216 | ||
a5606eee VP |
1217 | if (b->disposition == disp_del_at_next_stop) |
1218 | return; | |
1219 | ||
66076460 | 1220 | frame_saved = 0; |
a5606eee VP |
1221 | |
1222 | /* Determine if the watchpoint is within scope. */ | |
1223 | if (b->exp_valid_block == NULL) | |
1224 | within_current_scope = 1; | |
1225 | else | |
1226 | { | |
b5db5dfc UW |
1227 | struct frame_info *fi = get_current_frame (); |
1228 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1229 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1230 | ||
1231 | /* If we're in a function epilogue, unwinding may not work | |
1232 | properly, so do not attempt to recreate locations at this | |
1233 | point. See similar comments in watchpoint_check. */ | |
1234 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1235 | return; | |
66076460 DJ |
1236 | |
1237 | /* Save the current frame's ID so we can restore it after | |
1238 | evaluating the watchpoint expression on its own frame. */ | |
1239 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1240 | took a frame parameter, so that we didn't have to change the | |
1241 | selected frame. */ | |
1242 | frame_saved = 1; | |
1243 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1244 | ||
a5606eee VP |
1245 | fi = frame_find_by_id (b->watchpoint_frame); |
1246 | within_current_scope = (fi != NULL); | |
1247 | if (within_current_scope) | |
1248 | select_frame (fi); | |
1249 | } | |
1250 | ||
b5db5dfc UW |
1251 | /* We don't free locations. They are stored in the bp_location array |
1252 | and update_global_location_list will eventually delete them and | |
1253 | remove breakpoints if needed. */ | |
1254 | b->loc = NULL; | |
1255 | ||
a5606eee VP |
1256 | if (within_current_scope && reparse) |
1257 | { | |
1258 | char *s; | |
d63d0675 | 1259 | |
a5606eee VP |
1260 | if (b->exp) |
1261 | { | |
1262 | xfree (b->exp); | |
1263 | b->exp = NULL; | |
1264 | } | |
d63d0675 | 1265 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1266 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1267 | /* If the meaning of expression itself changed, the old value is | |
1268 | no longer relevant. We don't want to report a watchpoint hit | |
1269 | to the user when the old value and the new value may actually | |
1270 | be completely different objects. */ | |
1271 | value_free (b->val); | |
fa4727a6 DJ |
1272 | b->val = NULL; |
1273 | b->val_valid = 0; | |
60e1c644 PA |
1274 | |
1275 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1276 | expression is stored in the breakpoint object, not in the | |
1277 | locations (re)created below. */ | |
1278 | if (b->cond_string != NULL) | |
1279 | { | |
1280 | if (b->cond_exp != NULL) | |
1281 | { | |
1282 | xfree (b->cond_exp); | |
1283 | b->cond_exp = NULL; | |
1284 | } | |
1285 | ||
1286 | s = b->cond_string; | |
1287 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1288 | } | |
a5606eee | 1289 | } |
a5606eee VP |
1290 | |
1291 | /* If we failed to parse the expression, for example because | |
1292 | it refers to a global variable in a not-yet-loaded shared library, | |
1293 | don't try to insert watchpoint. We don't automatically delete | |
1294 | such watchpoint, though, since failure to parse expression | |
1295 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1296 | if ( !target_has_execution) |
1297 | { | |
1298 | /* Without execution, memory can't change. No use to try and | |
1299 | set watchpoint locations. The watchpoint will be reset when | |
1300 | the target gains execution, through breakpoint_re_set. */ | |
1301 | } | |
1302 | else if (within_current_scope && b->exp) | |
a5606eee | 1303 | { |
0cf6dd15 | 1304 | int pc = 0; |
fa4727a6 | 1305 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1306 | struct program_space *frame_pspace; |
a5606eee | 1307 | |
0cf6dd15 | 1308 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1309 | |
a5606eee VP |
1310 | /* Avoid setting b->val if it's already set. The meaning of |
1311 | b->val is 'the last value' user saw, and we should update | |
1312 | it only if we reported that last value to user. As it | |
1313 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1314 | if (!b->val_valid) |
1315 | { | |
1316 | b->val = v; | |
1317 | b->val_valid = 1; | |
1318 | } | |
a5606eee | 1319 | |
2d134ed3 PA |
1320 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1321 | ||
a5606eee | 1322 | /* Look at each value on the value chain. */ |
9fa40276 | 1323 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1324 | { |
1325 | /* If it's a memory location, and GDB actually needed | |
1326 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1327 | must watch it. If the first value returned is |
1328 | still lazy, that means an error occurred reading it; | |
1329 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1330 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1331 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1332 | { |
1333 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1334 | |
a5606eee VP |
1335 | /* We only watch structs and arrays if user asked |
1336 | for it explicitly, never if they just happen to | |
1337 | appear in the middle of some value chain. */ | |
fa4727a6 | 1338 | if (v == result |
a5606eee VP |
1339 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1340 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1341 | { | |
1342 | CORE_ADDR addr; | |
1343 | int len, type; | |
1344 | struct bp_location *loc, **tmp; | |
1345 | ||
42ae5230 | 1346 | addr = value_address (v); |
a5606eee VP |
1347 | len = TYPE_LENGTH (value_type (v)); |
1348 | type = hw_write; | |
1349 | if (b->type == bp_read_watchpoint) | |
1350 | type = hw_read; | |
1351 | else if (b->type == bp_access_watchpoint) | |
1352 | type = hw_access; | |
1353 | ||
39d61571 | 1354 | loc = allocate_bp_location (b); |
a5606eee VP |
1355 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1356 | ; | |
1357 | *tmp = loc; | |
a6d9a66e | 1358 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1359 | |
1360 | loc->pspace = frame_pspace; | |
a5606eee VP |
1361 | loc->address = addr; |
1362 | loc->length = len; | |
1363 | loc->watchpoint_type = type; | |
1364 | } | |
1365 | } | |
9fa40276 TJB |
1366 | } |
1367 | ||
1368 | /* Change the type of breakpoint between hardware assisted or | |
1369 | an ordinary watchpoint depending on the hardware support | |
1370 | and free hardware slots. REPARSE is set when the inferior | |
1371 | is started. */ | |
1372 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1373 | && reparse) | |
1374 | { | |
e09342b5 | 1375 | int reg_cnt; |
9fa40276 TJB |
1376 | enum bp_loc_type loc_type; |
1377 | struct bp_location *bl; | |
a5606eee | 1378 | |
e09342b5 TJB |
1379 | reg_cnt = can_use_hardware_watchpoint (val_chain, b->exact); |
1380 | ||
1381 | if (reg_cnt) | |
9fa40276 TJB |
1382 | { |
1383 | int i, target_resources_ok, other_type_used; | |
e09342b5 | 1384 | enum enable_state orig_enable_state; |
9fa40276 TJB |
1385 | |
1386 | /* We need to determine how many resources are already | |
e09342b5 TJB |
1387 | used for all other hardware watchpoints plus this one |
1388 | to see if we still have enough resources to also fit | |
1389 | this watchpoint in as well. To guarantee the | |
1390 | hw_watchpoint_used_count call below counts this | |
1391 | watchpoint, make sure that it is marked as a hardware | |
1392 | watchpoint. */ | |
1393 | b->type = bp_hardware_watchpoint; | |
1394 | ||
1395 | /* hw_watchpoint_used_count ignores disabled watchpoints, | |
1396 | and b might be disabled if we're being called from | |
1397 | do_enable_breakpoint. */ | |
1398 | orig_enable_state = b->enable_state; | |
1399 | b->enable_state = bp_enabled; | |
1400 | ||
9fa40276 TJB |
1401 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1402 | &other_type_used); | |
9fa40276 | 1403 | |
e09342b5 TJB |
1404 | b->enable_state = orig_enable_state; |
1405 | ||
1406 | target_resources_ok = target_can_use_hardware_watchpoint | |
1407 | (bp_hardware_watchpoint, i, other_type_used); | |
1408 | if (target_resources_ok <= 0) | |
1409 | b->type = bp_watchpoint; | |
9fa40276 TJB |
1410 | } |
1411 | else | |
1412 | b->type = bp_watchpoint; | |
1413 | ||
1414 | loc_type = (b->type == bp_watchpoint? bp_loc_other | |
1415 | : bp_loc_hardware_watchpoint); | |
1416 | for (bl = b->loc; bl; bl = bl->next) | |
1417 | bl->loc_type = loc_type; | |
1418 | } | |
1419 | ||
1420 | for (v = val_chain; v; v = next) | |
1421 | { | |
a5606eee VP |
1422 | next = value_next (v); |
1423 | if (v != b->val) | |
1424 | value_free (v); | |
1425 | } | |
1426 | ||
c7437ca6 PA |
1427 | /* If a software watchpoint is not watching any memory, then the |
1428 | above left it without any location set up. But, | |
1429 | bpstat_stop_status requires a location to be able to report | |
1430 | stops, so make sure there's at least a dummy one. */ | |
1431 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1432 | { | |
1433 | b->loc = allocate_bp_location (b); | |
1434 | b->loc->pspace = frame_pspace; | |
1435 | b->loc->address = -1; | |
1436 | b->loc->length = -1; | |
1437 | b->loc->watchpoint_type = -1; | |
1438 | } | |
a5606eee VP |
1439 | } |
1440 | else if (!within_current_scope) | |
7270d8f2 | 1441 | { |
ac74f770 MS |
1442 | printf_filtered (_("\ |
1443 | Watchpoint %d deleted because the program has left the block\n\ | |
1444 | in which its expression is valid.\n"), | |
a5606eee VP |
1445 | b->number); |
1446 | if (b->related_breakpoint) | |
60e1c644 PA |
1447 | { |
1448 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1449 | b->related_breakpoint->related_breakpoint = NULL; | |
1450 | b->related_breakpoint= NULL; | |
1451 | } | |
a5606eee | 1452 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1453 | } |
a5606eee VP |
1454 | |
1455 | /* Restore the selected frame. */ | |
66076460 DJ |
1456 | if (frame_saved) |
1457 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1458 | } |
1459 | ||
a5606eee | 1460 | |
74960c60 VP |
1461 | /* Returns 1 iff breakpoint location should be |
1462 | inserted in the inferior. */ | |
1463 | static int | |
35df4500 | 1464 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1465 | { |
35df4500 | 1466 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1467 | return 0; |
1468 | ||
35df4500 | 1469 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1470 | return 0; |
1471 | ||
35df4500 | 1472 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1473 | return 0; |
1474 | ||
56710373 PA |
1475 | /* This is set for example, when we're attached to the parent of a |
1476 | vfork, and have detached from the child. The child is running | |
1477 | free, and we expect it to do an exec or exit, at which point the | |
1478 | OS makes the parent schedulable again (and the target reports | |
1479 | that the vfork is done). Until the child is done with the shared | |
1480 | memory region, do not insert breakpoints in the parent, otherwise | |
1481 | the child could still trip on the parent's breakpoints. Since | |
1482 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1483 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1484 | return 0; |
1485 | ||
1042e4c0 SS |
1486 | /* Tracepoints are inserted by the target at a time of its choosing, |
1487 | not by us. */ | |
35df4500 | 1488 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1489 | return 0; |
1490 | ||
74960c60 VP |
1491 | return 1; |
1492 | } | |
1493 | ||
35df4500 TJB |
1494 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1495 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1496 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1497 | |
4a64f543 MS |
1498 | NOTE drow/2003-09-09: This routine could be broken down to an |
1499 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1500 | static int |
35df4500 | 1501 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1502 | struct ui_file *tmp_error_stream, |
fa3a767f | 1503 | int *disabled_breaks, |
26bb91f3 | 1504 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1505 | { |
1506 | int val = 0; | |
1507 | ||
35df4500 | 1508 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1509 | return 0; |
1510 | ||
8181d85f | 1511 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1512 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1513 | bl->target_info.placed_address = bl->address; | |
1514 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
8181d85f | 1515 | |
35df4500 TJB |
1516 | if (bl->loc_type == bp_loc_software_breakpoint |
1517 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1518 | { |
35df4500 | 1519 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1520 | { |
1521 | /* If the explicitly specified breakpoint type | |
1522 | is not hardware breakpoint, check the memory map to see | |
1523 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1524 | |
765dc015 VP |
1525 | Two important cases are: |
1526 | - location type is not hardware breakpoint, memory | |
1527 | is readonly. We change the type of the location to | |
1528 | hardware breakpoint. | |
4a64f543 MS |
1529 | - location type is hardware breakpoint, memory is |
1530 | read-write. This means we've previously made the | |
1531 | location hardware one, but then the memory map changed, | |
1532 | so we undo. | |
765dc015 | 1533 | |
4a64f543 MS |
1534 | When breakpoints are removed, remove_breakpoints will use |
1535 | location types we've just set here, the only possible | |
1536 | problem is that memory map has changed during running | |
1537 | program, but it's not going to work anyway with current | |
1538 | gdb. */ | |
765dc015 | 1539 | struct mem_region *mr |
35df4500 | 1540 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1541 | |
1542 | if (mr) | |
1543 | { | |
1544 | if (automatic_hardware_breakpoints) | |
1545 | { | |
765dc015 VP |
1546 | enum bp_loc_type new_type; |
1547 | ||
1548 | if (mr->attrib.mode != MEM_RW) | |
1549 | new_type = bp_loc_hardware_breakpoint; | |
1550 | else | |
1551 | new_type = bp_loc_software_breakpoint; | |
1552 | ||
35df4500 | 1553 | if (new_type != bl->loc_type) |
765dc015 VP |
1554 | { |
1555 | static int said = 0; | |
cc59ec59 | 1556 | |
35df4500 | 1557 | bl->loc_type = new_type; |
765dc015 VP |
1558 | if (!said) |
1559 | { | |
3e43a32a MS |
1560 | fprintf_filtered (gdb_stdout, |
1561 | _("Note: automatically using " | |
1562 | "hardware breakpoints for " | |
1563 | "read-only addresses.\n")); | |
765dc015 VP |
1564 | said = 1; |
1565 | } | |
1566 | } | |
1567 | } | |
35df4500 | 1568 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1569 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1570 | warning (_("cannot set software breakpoint " |
1571 | "at readonly address %s"), | |
35df4500 | 1572 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1573 | } |
1574 | } | |
1575 | ||
879bfdc2 DJ |
1576 | /* First check to see if we have to handle an overlay. */ |
1577 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1578 | || bl->section == NULL |
1579 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1580 | { |
1581 | /* No overlay handling: just set the breakpoint. */ | |
1582 | ||
35df4500 TJB |
1583 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1584 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1585 | &bl->target_info); | |
879bfdc2 | 1586 | else |
35df4500 TJB |
1587 | val = target_insert_breakpoint (bl->gdbarch, |
1588 | &bl->target_info); | |
879bfdc2 DJ |
1589 | } |
1590 | else | |
1591 | { | |
4a64f543 | 1592 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1593 | Shall we set a breakpoint at the LMA? */ |
1594 | if (!overlay_events_enabled) | |
1595 | { | |
1596 | /* Yes -- overlay event support is not active, | |
1597 | so we must try to set a breakpoint at the LMA. | |
1598 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1599 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1600 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1601 | bl->owner->number); |
879bfdc2 DJ |
1602 | else |
1603 | { | |
35df4500 TJB |
1604 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1605 | bl->section); | |
879bfdc2 | 1606 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1607 | bl->overlay_target_info = bl->target_info; |
1608 | bl->overlay_target_info.placed_address = addr; | |
1609 | val = target_insert_breakpoint (bl->gdbarch, | |
1610 | &bl->overlay_target_info); | |
879bfdc2 | 1611 | if (val != 0) |
99361f52 | 1612 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1613 | "Overlay breakpoint %d " |
1614 | "failed: in ROM?\n", | |
35df4500 | 1615 | bl->owner->number); |
879bfdc2 DJ |
1616 | } |
1617 | } | |
1618 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1619 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1620 | { |
1621 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1622 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1623 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1624 | &bl->target_info); | |
879bfdc2 | 1625 | else |
35df4500 TJB |
1626 | val = target_insert_breakpoint (bl->gdbarch, |
1627 | &bl->target_info); | |
879bfdc2 DJ |
1628 | } |
1629 | else | |
1630 | { | |
1631 | /* No. This breakpoint will not be inserted. | |
1632 | No error, but do not mark the bp as 'inserted'. */ | |
1633 | return 0; | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | if (val) | |
1638 | { | |
1639 | /* Can't set the breakpoint. */ | |
35df4500 | 1640 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1641 | { |
4a64f543 | 1642 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1643 | val = 0; |
35df4500 | 1644 | bl->shlib_disabled = 1; |
879bfdc2 DJ |
1645 | if (!*disabled_breaks) |
1646 | { | |
1647 | fprintf_unfiltered (tmp_error_stream, | |
1648 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1649 | bl->owner->number); |
879bfdc2 | 1650 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1651 | "Temporarily disabling shared " |
1652 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1653 | } |
1654 | *disabled_breaks = 1; | |
1655 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1656 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1657 | } |
1658 | else | |
879bfdc2 | 1659 | { |
35df4500 | 1660 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1661 | { |
1662 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1663 | fprintf_unfiltered (tmp_error_stream, |
1664 | "Cannot insert hardware " | |
1665 | "breakpoint %d.\n", | |
35df4500 | 1666 | bl->owner->number); |
879bfdc2 DJ |
1667 | } |
1668 | else | |
1669 | { | |
1670 | fprintf_unfiltered (tmp_error_stream, | |
1671 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1672 | bl->owner->number); |
879bfdc2 DJ |
1673 | fprintf_filtered (tmp_error_stream, |
1674 | "Error accessing memory address "); | |
35df4500 | 1675 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1676 | tmp_error_stream); |
879bfdc2 DJ |
1677 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1678 | safe_strerror (val)); | |
1679 | } | |
1680 | ||
1681 | } | |
1682 | } | |
1683 | else | |
35df4500 | 1684 | bl->inserted = 1; |
879bfdc2 DJ |
1685 | |
1686 | return val; | |
1687 | } | |
1688 | ||
35df4500 | 1689 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1690 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1691 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1692 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1693 | { |
77b06cd7 TJB |
1694 | gdb_assert (bl->owner->ops != NULL |
1695 | && bl->owner->ops->insert_location != NULL); | |
1696 | ||
1697 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1698 | |
1699 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1700 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1701 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1702 | { |
1703 | struct bp_location *loc, **loc_temp; | |
1704 | ||
1705 | /* But don't try to insert it, if there's already another | |
1706 | hw_access location that would be considered a duplicate | |
1707 | of this one. */ | |
1708 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1709 | if (loc != bl |
85d721b8 | 1710 | && loc->watchpoint_type == hw_access |
35df4500 | 1711 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1712 | { |
35df4500 TJB |
1713 | bl->duplicate = 1; |
1714 | bl->inserted = 1; | |
1715 | bl->target_info = loc->target_info; | |
1716 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1717 | val = 0; |
1718 | break; | |
1719 | } | |
1720 | ||
1721 | if (val == 1) | |
1722 | { | |
77b06cd7 TJB |
1723 | bl->watchpoint_type = hw_access; |
1724 | val = bl->owner->ops->insert_location (bl); | |
1725 | ||
1726 | if (val) | |
1727 | /* Back to the original value. */ | |
1728 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1729 | } |
1730 | } | |
1731 | ||
35df4500 | 1732 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1733 | } |
1734 | ||
35df4500 | 1735 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1736 | { |
77b06cd7 TJB |
1737 | gdb_assert (bl->owner->ops != NULL |
1738 | && bl->owner->ops->insert_location != NULL); | |
1739 | ||
1740 | val = bl->owner->ops->insert_location (bl); | |
1741 | if (val) | |
1742 | { | |
1743 | bl->owner->enable_state = bp_disabled; | |
1744 | ||
1745 | if (val == 1) | |
1746 | warning (_("\ | |
1747 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1748 | of catchpoint."), bl->owner->number); | |
1749 | else | |
1750 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1751 | } | |
1752 | ||
1753 | bl->inserted = (val == 0); | |
1640b821 DJ |
1754 | |
1755 | /* We've already printed an error message if there was a problem | |
1756 | inserting this catchpoint, and we've disabled the catchpoint, | |
1757 | so just return success. */ | |
1758 | return 0; | |
879bfdc2 DJ |
1759 | } |
1760 | ||
1761 | return 0; | |
1762 | } | |
1763 | ||
6c95b8df PA |
1764 | /* This function is called when program space PSPACE is about to be |
1765 | deleted. It takes care of updating breakpoints to not reference | |
1766 | PSPACE anymore. */ | |
1767 | ||
1768 | void | |
1769 | breakpoint_program_space_exit (struct program_space *pspace) | |
1770 | { | |
1771 | struct breakpoint *b, *b_temp; | |
876fa593 | 1772 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1773 | |
1774 | /* Remove any breakpoint that was set through this program space. */ | |
1775 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1776 | { | |
1777 | if (b->pspace == pspace) | |
1778 | delete_breakpoint (b); | |
1779 | } | |
1780 | ||
1781 | /* Breakpoints set through other program spaces could have locations | |
1782 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1783 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1784 | { |
1785 | struct bp_location *tmp; | |
1786 | ||
1787 | if (loc->pspace == pspace) | |
1788 | { | |
2bdf28a0 | 1789 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1790 | if (loc->owner->loc == loc) |
1791 | loc->owner->loc = loc->next; | |
1792 | else | |
1793 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1794 | if (tmp->next == loc) | |
1795 | { | |
1796 | tmp->next = loc->next; | |
1797 | break; | |
1798 | } | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | /* Now update the global location list to permanently delete the | |
1803 | removed locations above. */ | |
1804 | update_global_location_list (0); | |
1805 | } | |
1806 | ||
74960c60 VP |
1807 | /* Make sure all breakpoints are inserted in inferior. |
1808 | Throws exception on any error. | |
1809 | A breakpoint that is already inserted won't be inserted | |
1810 | again, so calling this function twice is safe. */ | |
1811 | void | |
1812 | insert_breakpoints (void) | |
1813 | { | |
1814 | struct breakpoint *bpt; | |
1815 | ||
1816 | ALL_BREAKPOINTS (bpt) | |
1817 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1818 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1819 | |
b60e7edf | 1820 | update_global_location_list (1); |
74960c60 | 1821 | |
c35b1492 PA |
1822 | /* update_global_location_list does not insert breakpoints when |
1823 | always_inserted_mode is not enabled. Explicitly insert them | |
1824 | now. */ | |
1825 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1826 | insert_breakpoint_locations (); |
1827 | } | |
1828 | ||
c906108c SS |
1829 | /* insert_breakpoints is used when starting or continuing the program. |
1830 | remove_breakpoints is used when the program stops. | |
1831 | Both return zero if successful, | |
1832 | or an `errno' value if could not write the inferior. */ | |
1833 | ||
74960c60 VP |
1834 | static void |
1835 | insert_breakpoint_locations (void) | |
c906108c | 1836 | { |
a5606eee | 1837 | struct breakpoint *bpt; |
35df4500 | 1838 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1839 | int error = 0; |
c906108c SS |
1840 | int val = 0; |
1841 | int disabled_breaks = 0; | |
81d0cc19 | 1842 | int hw_breakpoint_error = 0; |
c906108c | 1843 | |
81d0cc19 | 1844 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1845 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1846 | |
81d0cc19 GS |
1847 | /* Explicitly mark the warning -- this will only be printed if |
1848 | there was an error. */ | |
1849 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1850 | |
1851 | save_current_space_and_thread (); | |
1852 | ||
35df4500 | 1853 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1854 | { |
35df4500 | 1855 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1856 | continue; |
1857 | ||
4a64f543 MS |
1858 | /* There is no point inserting thread-specific breakpoints if |
1859 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1860 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1861 | if (bl->owner->thread != -1 |
1862 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1863 | continue; |
1864 | ||
35df4500 | 1865 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1866 | |
1867 | /* For targets that support global breakpoints, there's no need | |
1868 | to select an inferior to insert breakpoint to. In fact, even | |
1869 | if we aren't attached to any process yet, we should still | |
1870 | insert breakpoints. */ | |
1871 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1872 | && ptid_equal (inferior_ptid, null_ptid)) | |
1873 | continue; | |
1874 | ||
35df4500 | 1875 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1876 | &hw_breakpoint_error); |
1877 | if (val) | |
e236ba44 | 1878 | error = val; |
879bfdc2 | 1879 | } |
c906108c | 1880 | |
4a64f543 MS |
1881 | /* If we failed to insert all locations of a watchpoint, remove |
1882 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1883 | ALL_BREAKPOINTS (bpt) |
1884 | { | |
1885 | int some_failed = 0; | |
1886 | struct bp_location *loc; | |
1887 | ||
1888 | if (!is_hardware_watchpoint (bpt)) | |
1889 | continue; | |
1890 | ||
d6b74ac4 | 1891 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1892 | continue; |
74960c60 VP |
1893 | |
1894 | if (bpt->disposition == disp_del_at_next_stop) | |
1895 | continue; | |
a5606eee VP |
1896 | |
1897 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1898 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1899 | { |
1900 | some_failed = 1; | |
1901 | break; | |
1902 | } | |
1903 | if (some_failed) | |
1904 | { | |
1905 | for (loc = bpt->loc; loc; loc = loc->next) | |
1906 | if (loc->inserted) | |
1907 | remove_breakpoint (loc, mark_uninserted); | |
1908 | ||
1909 | hw_breakpoint_error = 1; | |
1910 | fprintf_unfiltered (tmp_error_stream, | |
1911 | "Could not insert hardware watchpoint %d.\n", | |
1912 | bpt->number); | |
1913 | error = -1; | |
1914 | } | |
1915 | } | |
1916 | ||
e236ba44 | 1917 | if (error) |
81d0cc19 GS |
1918 | { |
1919 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1920 | message about possibly exhausted resources. */ | |
879bfdc2 | 1921 | if (hw_breakpoint_error) |
81d0cc19 | 1922 | { |
c6510018 MS |
1923 | fprintf_unfiltered (tmp_error_stream, |
1924 | "Could not insert hardware breakpoints:\n\ | |
1925 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1926 | } |
81d0cc19 GS |
1927 | target_terminal_ours_for_output (); |
1928 | error_stream (tmp_error_stream); | |
1929 | } | |
f7545552 TT |
1930 | |
1931 | do_cleanups (cleanups); | |
c906108c SS |
1932 | } |
1933 | ||
c906108c | 1934 | int |
fba45db2 | 1935 | remove_breakpoints (void) |
c906108c | 1936 | { |
35df4500 | 1937 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 1938 | int val = 0; |
c906108c | 1939 | |
35df4500 | 1940 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 1941 | { |
35df4500 TJB |
1942 | if (bl->inserted) |
1943 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 1944 | } |
3a1bae8e | 1945 | return val; |
c906108c SS |
1946 | } |
1947 | ||
6c95b8df PA |
1948 | /* Remove breakpoints of process PID. */ |
1949 | ||
1950 | int | |
1951 | remove_breakpoints_pid (int pid) | |
1952 | { | |
35df4500 | 1953 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
1954 | int val; |
1955 | struct inferior *inf = find_inferior_pid (pid); | |
1956 | ||
35df4500 | 1957 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 1958 | { |
35df4500 | 1959 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
1960 | continue; |
1961 | ||
35df4500 | 1962 | if (bl->inserted) |
6c95b8df | 1963 | { |
35df4500 | 1964 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
1965 | if (val != 0) |
1966 | return val; | |
1967 | } | |
1968 | } | |
1969 | return 0; | |
1970 | } | |
1971 | ||
692590c1 | 1972 | int |
80ce1ecb | 1973 | remove_hw_watchpoints (void) |
692590c1 | 1974 | { |
35df4500 | 1975 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 1976 | int val = 0; |
692590c1 | 1977 | |
35df4500 | 1978 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 1979 | { |
35df4500 TJB |
1980 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
1981 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 1982 | } |
3a1bae8e | 1983 | return val; |
692590c1 MS |
1984 | } |
1985 | ||
c906108c | 1986 | int |
fba45db2 | 1987 | reattach_breakpoints (int pid) |
c906108c | 1988 | { |
6c95b8df | 1989 | struct cleanup *old_chain; |
35df4500 | 1990 | struct bp_location *bl, **blp_tmp; |
c906108c | 1991 | int val; |
86b887df | 1992 | struct ui_file *tmp_error_stream; |
fa3a767f | 1993 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
1994 | struct inferior *inf; |
1995 | struct thread_info *tp; | |
1996 | ||
1997 | tp = any_live_thread_of_process (pid); | |
1998 | if (tp == NULL) | |
1999 | return 1; | |
2000 | ||
2001 | inf = find_inferior_pid (pid); | |
2002 | old_chain = save_inferior_ptid (); | |
2003 | ||
2004 | inferior_ptid = tp->ptid; | |
a4954f26 | 2005 | |
86b887df | 2006 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2007 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2008 | |
35df4500 | 2009 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2010 | { |
35df4500 | 2011 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2012 | continue; |
2013 | ||
35df4500 | 2014 | if (bl->inserted) |
c5aa993b | 2015 | { |
35df4500 TJB |
2016 | bl->inserted = 0; |
2017 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2018 | if (val != 0) |
2019 | { | |
ce696e05 | 2020 | do_cleanups (old_chain); |
c5aa993b JM |
2021 | return val; |
2022 | } | |
2023 | } | |
2024 | } | |
ce696e05 | 2025 | do_cleanups (old_chain); |
c906108c SS |
2026 | return 0; |
2027 | } | |
2028 | ||
e58b0e63 PA |
2029 | static int internal_breakpoint_number = -1; |
2030 | ||
84f4c1fe PM |
2031 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2032 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2033 | from internal_breakpoint_number and that variable decremented. | |
2034 | Otherwis the breakpoint number will be populated from | |
2035 | breakpoint_count and that value incremented. Internal breakpoints | |
2036 | do not set the internal var bpnum. */ | |
2037 | static void | |
2038 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2039 | { | |
2040 | if (internal) | |
2041 | b->number = internal_breakpoint_number--; | |
2042 | else | |
2043 | { | |
2044 | set_breakpoint_count (breakpoint_count + 1); | |
2045 | b->number = breakpoint_count; | |
2046 | } | |
2047 | } | |
2048 | ||
e62c965a | 2049 | static struct breakpoint * |
a6d9a66e UW |
2050 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2051 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2052 | { |
e62c965a PP |
2053 | struct symtab_and_line sal; |
2054 | struct breakpoint *b; | |
2055 | ||
4a64f543 | 2056 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2057 | |
2058 | sal.pc = address; | |
2059 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2060 | sal.pspace = current_program_space; |
e62c965a | 2061 | |
a6d9a66e | 2062 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2063 | b->number = internal_breakpoint_number--; |
2064 | b->disposition = disp_donttouch; | |
2065 | ||
2066 | return b; | |
2067 | } | |
2068 | ||
17450429 PP |
2069 | static const char *const longjmp_names[] = |
2070 | { | |
2071 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2072 | }; | |
2073 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2074 | ||
2075 | /* Per-objfile data private to breakpoint.c. */ | |
2076 | struct breakpoint_objfile_data | |
2077 | { | |
2078 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2079 | struct minimal_symbol *overlay_msym; | |
2080 | ||
2081 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2082 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2083 | ||
2084 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2085 | struct minimal_symbol *terminate_msym; | |
2086 | ||
2087 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2088 | struct minimal_symbol *exception_msym; | |
2089 | }; | |
2090 | ||
2091 | static const struct objfile_data *breakpoint_objfile_key; | |
2092 | ||
2093 | /* Minimal symbol not found sentinel. */ | |
2094 | static struct minimal_symbol msym_not_found; | |
2095 | ||
2096 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2097 | ||
2098 | static int | |
2099 | msym_not_found_p (const struct minimal_symbol *msym) | |
2100 | { | |
2101 | return msym == &msym_not_found; | |
2102 | } | |
2103 | ||
2104 | /* Return per-objfile data needed by breakpoint.c. | |
2105 | Allocate the data if necessary. */ | |
2106 | ||
2107 | static struct breakpoint_objfile_data * | |
2108 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2109 | { | |
2110 | struct breakpoint_objfile_data *bp_objfile_data; | |
2111 | ||
2112 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2113 | if (bp_objfile_data == NULL) | |
2114 | { | |
2115 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2116 | sizeof (*bp_objfile_data)); | |
2117 | ||
2118 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2119 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2120 | } | |
2121 | return bp_objfile_data; | |
2122 | } | |
2123 | ||
e62c965a | 2124 | static void |
af02033e | 2125 | create_overlay_event_breakpoint (void) |
e62c965a | 2126 | { |
69de3c6a | 2127 | struct objfile *objfile; |
af02033e | 2128 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2129 | |
69de3c6a PP |
2130 | ALL_OBJFILES (objfile) |
2131 | { | |
2132 | struct breakpoint *b; | |
17450429 PP |
2133 | struct breakpoint_objfile_data *bp_objfile_data; |
2134 | CORE_ADDR addr; | |
69de3c6a | 2135 | |
17450429 PP |
2136 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2137 | ||
2138 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2139 | continue; | |
2140 | ||
2141 | if (bp_objfile_data->overlay_msym == NULL) | |
2142 | { | |
2143 | struct minimal_symbol *m; | |
2144 | ||
2145 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2146 | if (m == NULL) | |
2147 | { | |
2148 | /* Avoid future lookups in this objfile. */ | |
2149 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2150 | continue; | |
2151 | } | |
2152 | bp_objfile_data->overlay_msym = m; | |
2153 | } | |
e62c965a | 2154 | |
17450429 PP |
2155 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2156 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
69de3c6a PP |
2157 | bp_overlay_event); |
2158 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2159 | |
69de3c6a PP |
2160 | if (overlay_debugging == ovly_auto) |
2161 | { | |
2162 | b->enable_state = bp_enabled; | |
2163 | overlay_events_enabled = 1; | |
2164 | } | |
2165 | else | |
2166 | { | |
2167 | b->enable_state = bp_disabled; | |
2168 | overlay_events_enabled = 0; | |
2169 | } | |
e62c965a PP |
2170 | } |
2171 | update_global_location_list (1); | |
2172 | } | |
2173 | ||
0fd8e87f | 2174 | static void |
af02033e | 2175 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2176 | { |
6c95b8df | 2177 | struct program_space *pspace; |
6c95b8df PA |
2178 | struct cleanup *old_chain; |
2179 | ||
2180 | old_chain = save_current_program_space (); | |
0fd8e87f | 2181 | |
6c95b8df | 2182 | ALL_PSPACES (pspace) |
af02033e PP |
2183 | { |
2184 | struct objfile *objfile; | |
2185 | ||
2186 | set_current_program_space (pspace); | |
2187 | ||
2188 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2189 | { |
af02033e PP |
2190 | int i; |
2191 | struct gdbarch *gdbarch; | |
17450429 | 2192 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2193 | |
af02033e PP |
2194 | gdbarch = get_objfile_arch (objfile); |
2195 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2196 | continue; |
2197 | ||
17450429 PP |
2198 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2199 | ||
2200 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2201 | { |
2202 | struct breakpoint *b; | |
af02033e | 2203 | const char *func_name; |
17450429 | 2204 | CORE_ADDR addr; |
6c95b8df | 2205 | |
17450429 | 2206 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2207 | continue; |
0fd8e87f | 2208 | |
17450429 PP |
2209 | func_name = longjmp_names[i]; |
2210 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2211 | { | |
2212 | struct minimal_symbol *m; | |
2213 | ||
2214 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2215 | if (m == NULL) | |
2216 | { | |
2217 | /* Prevent future lookups in this objfile. */ | |
2218 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2219 | continue; | |
2220 | } | |
2221 | bp_objfile_data->longjmp_msym[i] = m; | |
2222 | } | |
2223 | ||
2224 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
2225 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); | |
af02033e PP |
2226 | b->addr_string = xstrdup (func_name); |
2227 | b->enable_state = bp_disabled; | |
2228 | } | |
0fd8e87f | 2229 | } |
af02033e | 2230 | } |
0fd8e87f | 2231 | update_global_location_list (1); |
6c95b8df PA |
2232 | |
2233 | do_cleanups (old_chain); | |
0fd8e87f UW |
2234 | } |
2235 | ||
af02033e | 2236 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2237 | static void |
af02033e | 2238 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2239 | { |
2240 | struct program_space *pspace; | |
aa7d318d | 2241 | struct cleanup *old_chain; |
af02033e | 2242 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2243 | |
2244 | old_chain = save_current_program_space (); | |
2245 | ||
2246 | ALL_PSPACES (pspace) | |
17450429 PP |
2247 | { |
2248 | struct objfile *objfile; | |
2249 | CORE_ADDR addr; | |
2250 | ||
2251 | set_current_program_space (pspace); | |
2252 | ||
aa7d318d TT |
2253 | ALL_OBJFILES (objfile) |
2254 | { | |
2255 | struct breakpoint *b; | |
17450429 | 2256 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2257 | |
17450429 | 2258 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2259 | |
17450429 PP |
2260 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2261 | continue; | |
2262 | ||
2263 | if (bp_objfile_data->terminate_msym == NULL) | |
2264 | { | |
2265 | struct minimal_symbol *m; | |
2266 | ||
2267 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2268 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2269 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2270 | { | |
2271 | /* Prevent future lookups in this objfile. */ | |
2272 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2273 | continue; | |
2274 | } | |
2275 | bp_objfile_data->terminate_msym = m; | |
2276 | } | |
aa7d318d | 2277 | |
17450429 PP |
2278 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2279 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
aa7d318d TT |
2280 | bp_std_terminate_master); |
2281 | b->addr_string = xstrdup (func_name); | |
2282 | b->enable_state = bp_disabled; | |
2283 | } | |
17450429 PP |
2284 | } |
2285 | ||
aa7d318d TT |
2286 | update_global_location_list (1); |
2287 | ||
2288 | do_cleanups (old_chain); | |
2289 | } | |
2290 | ||
186c406b TT |
2291 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2292 | ||
2293 | void | |
2294 | create_exception_master_breakpoint (void) | |
2295 | { | |
2296 | struct objfile *objfile; | |
17450429 | 2297 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2298 | |
2299 | ALL_OBJFILES (objfile) | |
2300 | { | |
17450429 PP |
2301 | struct breakpoint *b; |
2302 | struct gdbarch *gdbarch; | |
2303 | struct breakpoint_objfile_data *bp_objfile_data; | |
2304 | CORE_ADDR addr; | |
2305 | ||
2306 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2307 | ||
2308 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2309 | continue; | |
2310 | ||
2311 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2312 | |
17450429 | 2313 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2314 | { |
17450429 | 2315 | struct minimal_symbol *debug_hook; |
186c406b | 2316 | |
17450429 PP |
2317 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2318 | if (debug_hook == NULL) | |
2319 | { | |
2320 | bp_objfile_data->exception_msym = &msym_not_found; | |
2321 | continue; | |
2322 | } | |
2323 | ||
2324 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2325 | } |
17450429 PP |
2326 | |
2327 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2328 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2329 | ¤t_target); | |
2330 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2331 | b->addr_string = xstrdup (func_name); | |
2332 | b->enable_state = bp_disabled; | |
186c406b TT |
2333 | } |
2334 | ||
2335 | update_global_location_list (1); | |
2336 | } | |
2337 | ||
c906108c | 2338 | void |
fba45db2 | 2339 | update_breakpoints_after_exec (void) |
c906108c | 2340 | { |
35df4500 | 2341 | struct breakpoint *b, *b_tmp; |
876fa593 | 2342 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2343 | |
25b22b0a PA |
2344 | /* We're about to delete breakpoints from GDB's lists. If the |
2345 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2346 | writing the breakpoints' "shadow contents" back into memory. The | |
2347 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2348 | do that. Instead, the target is responsible from marking | |
2349 | breakpoints out as soon as it detects an exec. We don't do that | |
2350 | here instead, because there may be other attempts to delete | |
2351 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2352 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2353 | if (bploc->pspace == current_program_space) |
2354 | gdb_assert (!bploc->inserted); | |
c906108c | 2355 | |
35df4500 | 2356 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2357 | { |
6c95b8df PA |
2358 | if (b->pspace != current_program_space) |
2359 | continue; | |
2360 | ||
4a64f543 | 2361 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2362 | if (b->type == bp_shlib_event) |
2363 | { | |
2364 | delete_breakpoint (b); | |
2365 | continue; | |
2366 | } | |
c906108c | 2367 | |
4a64f543 | 2368 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2369 | if (b->type == bp_jit_event) |
2370 | { | |
2371 | delete_breakpoint (b); | |
2372 | continue; | |
2373 | } | |
2374 | ||
1900040c | 2375 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2376 | as must overlay event and longjmp master breakpoints. */ |
2377 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2378 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2379 | || b->type == bp_exception_master) | |
c4093a6a JM |
2380 | { |
2381 | delete_breakpoint (b); | |
2382 | continue; | |
2383 | } | |
2384 | ||
4a64f543 | 2385 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2386 | if (b->type == bp_step_resume) |
2387 | { | |
2388 | delete_breakpoint (b); | |
2389 | continue; | |
2390 | } | |
2391 | ||
611c83ae PA |
2392 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2393 | after an exec. */ | |
186c406b TT |
2394 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2395 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2396 | { |
2397 | delete_breakpoint (b); | |
2398 | continue; | |
2399 | } | |
2400 | ||
ce78b96d JB |
2401 | if (b->type == bp_catchpoint) |
2402 | { | |
2403 | /* For now, none of the bp_catchpoint breakpoints need to | |
2404 | do anything at this point. In the future, if some of | |
2405 | the catchpoints need to something, we will need to add | |
2406 | a new method, and call this method from here. */ | |
2407 | continue; | |
2408 | } | |
2409 | ||
c5aa993b JM |
2410 | /* bp_finish is a special case. The only way we ought to be able |
2411 | to see one of these when an exec() has happened, is if the user | |
2412 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2413 | carries them to the call-site of the current callee, by setting | |
2414 | a temporary bp there and resuming. But in this case, the finish | |
2415 | will carry them entirely through the vfork & exec. | |
2416 | ||
2417 | We don't want to allow a bp_finish to remain inserted now. But | |
2418 | we can't safely delete it, 'cause finish_command has a handle to | |
2419 | the bp on a bpstat, and will later want to delete it. There's a | |
2420 | chance (and I've seen it happen) that if we delete the bp_finish | |
2421 | here, that its storage will get reused by the time finish_command | |
2422 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2423 | We really must allow finish_command to delete a bp_finish. | |
2424 | ||
53a5351d JM |
2425 | In the absense of a general solution for the "how do we know |
2426 | it's safe to delete something others may have handles to?" | |
2427 | problem, what we'll do here is just uninsert the bp_finish, and | |
2428 | let finish_command delete it. | |
2429 | ||
2430 | (We know the bp_finish is "doomed" in the sense that it's | |
2431 | momentary, and will be deleted as soon as finish_command sees | |
2432 | the inferior stopped. So it doesn't matter that the bp's | |
2433 | address is probably bogus in the new a.out, unlike e.g., the | |
2434 | solib breakpoints.) */ | |
c5aa993b | 2435 | |
c5aa993b JM |
2436 | if (b->type == bp_finish) |
2437 | { | |
2438 | continue; | |
2439 | } | |
2440 | ||
2441 | /* Without a symbolic address, we have little hope of the | |
2442 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2443 | a.out. */ |
c5aa993b JM |
2444 | if (b->addr_string == NULL) |
2445 | { | |
2446 | delete_breakpoint (b); | |
2447 | continue; | |
2448 | } | |
c5aa993b | 2449 | } |
1900040c | 2450 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2451 | create_overlay_event_breakpoint (); |
2452 | create_longjmp_master_breakpoint (); | |
2453 | create_std_terminate_master_breakpoint (); | |
186c406b | 2454 | create_exception_master_breakpoint (); |
c906108c SS |
2455 | } |
2456 | ||
2457 | int | |
fba45db2 | 2458 | detach_breakpoints (int pid) |
c906108c | 2459 | { |
35df4500 | 2460 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2461 | int val = 0; |
ce696e05 | 2462 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2463 | struct inferior *inf = current_inferior (); |
c5aa993b | 2464 | |
39f77062 | 2465 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2466 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2467 | |
6c95b8df | 2468 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2469 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2470 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2471 | { |
35df4500 | 2472 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2473 | continue; |
2474 | ||
35df4500 TJB |
2475 | if (bl->inserted) |
2476 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2477 | } |
d03285ec UW |
2478 | |
2479 | /* Detach single-step breakpoints as well. */ | |
2480 | detach_single_step_breakpoints (); | |
2481 | ||
ce696e05 | 2482 | do_cleanups (old_chain); |
3a1bae8e | 2483 | return val; |
c906108c SS |
2484 | } |
2485 | ||
35df4500 | 2486 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2487 | Note that this is used to detach breakpoints from a child fork. |
2488 | When we get here, the child isn't in the inferior list, and neither | |
2489 | do we have objects to represent its address space --- we should | |
35df4500 | 2490 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2491 | |
c906108c | 2492 | static int |
35df4500 | 2493 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2494 | { |
2495 | int val; | |
c5aa993b | 2496 | |
35df4500 TJB |
2497 | /* BL is never in moribund_locations by our callers. */ |
2498 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2499 | |
35df4500 | 2500 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2501 | /* Permanent breakpoints cannot be inserted or removed. */ |
2502 | return 0; | |
2503 | ||
74960c60 VP |
2504 | /* The type of none suggests that owner is actually deleted. |
2505 | This should not ever happen. */ | |
35df4500 | 2506 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2507 | |
35df4500 TJB |
2508 | if (bl->loc_type == bp_loc_software_breakpoint |
2509 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2510 | { |
c02f5703 MS |
2511 | /* "Normal" instruction breakpoint: either the standard |
2512 | trap-instruction bp (bp_breakpoint), or a | |
2513 | bp_hardware_breakpoint. */ | |
2514 | ||
2515 | /* First check to see if we have to handle an overlay. */ | |
2516 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2517 | || bl->section == NULL |
2518 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2519 | { |
2520 | /* No overlay handling: just remove the breakpoint. */ | |
2521 | ||
35df4500 TJB |
2522 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2523 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2524 | else |
35df4500 | 2525 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2526 | } |
c906108c SS |
2527 | else |
2528 | { | |
4a64f543 | 2529 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2530 | Did we set a breakpoint at the LMA? */ |
2531 | if (!overlay_events_enabled) | |
2532 | { | |
2533 | /* Yes -- overlay event support is not active, so we | |
2534 | should have set a breakpoint at the LMA. Remove it. | |
2535 | */ | |
c02f5703 MS |
2536 | /* Ignore any failures: if the LMA is in ROM, we will |
2537 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2538 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2539 | target_remove_hw_breakpoint (bl->gdbarch, | |
2540 | &bl->overlay_target_info); | |
c02f5703 | 2541 | else |
35df4500 TJB |
2542 | target_remove_breakpoint (bl->gdbarch, |
2543 | &bl->overlay_target_info); | |
c02f5703 MS |
2544 | } |
2545 | /* Did we set a breakpoint at the VMA? | |
2546 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2547 | if (bl->inserted) |
c906108c | 2548 | { |
c02f5703 MS |
2549 | /* Yes -- remove it. Previously we did not bother to |
2550 | remove the breakpoint if the section had been | |
2551 | unmapped, but let's not rely on that being safe. We | |
2552 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2553 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2554 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2555 | &bl->target_info); | |
aa67235e UW |
2556 | |
2557 | /* However, we should remove *software* breakpoints only | |
2558 | if the section is still mapped, or else we overwrite | |
2559 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2560 | else if (section_is_mapped (bl->section)) |
2561 | val = target_remove_breakpoint (bl->gdbarch, | |
2562 | &bl->target_info); | |
aa67235e UW |
2563 | else |
2564 | val = 0; | |
c906108c | 2565 | } |
c02f5703 MS |
2566 | else |
2567 | { | |
2568 | /* No -- not inserted, so no need to remove. No error. */ | |
2569 | val = 0; | |
2570 | } | |
c906108c | 2571 | } |
879d1e6b UW |
2572 | |
2573 | /* In some cases, we might not be able to remove a breakpoint | |
2574 | in a shared library that has already been removed, but we | |
2575 | have not yet processed the shlib unload event. */ | |
35df4500 | 2576 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2577 | val = 0; |
2578 | ||
c906108c SS |
2579 | if (val) |
2580 | return val; | |
35df4500 | 2581 | bl->inserted = (is == mark_inserted); |
c906108c | 2582 | } |
35df4500 | 2583 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2584 | { |
77b06cd7 TJB |
2585 | gdb_assert (bl->owner->ops != NULL |
2586 | && bl->owner->ops->remove_location != NULL); | |
2587 | ||
35df4500 | 2588 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2589 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2590 | |
c906108c | 2591 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2592 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2593 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2594 | bl->owner->number); |
c906108c | 2595 | } |
35df4500 TJB |
2596 | else if (bl->owner->type == bp_catchpoint |
2597 | && breakpoint_enabled (bl->owner) | |
2598 | && !bl->duplicate) | |
ce78b96d | 2599 | { |
77b06cd7 TJB |
2600 | gdb_assert (bl->owner->ops != NULL |
2601 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2602 | |
77b06cd7 | 2603 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2604 | if (val) |
2605 | return val; | |
77b06cd7 | 2606 | |
35df4500 | 2607 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2608 | } |
c906108c SS |
2609 | |
2610 | return 0; | |
2611 | } | |
2612 | ||
6c95b8df | 2613 | static int |
35df4500 | 2614 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2615 | { |
2616 | int ret; | |
2617 | struct cleanup *old_chain; | |
2618 | ||
35df4500 TJB |
2619 | /* BL is never in moribund_locations by our callers. */ |
2620 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2621 | |
35df4500 | 2622 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2623 | /* Permanent breakpoints cannot be inserted or removed. */ |
2624 | return 0; | |
2625 | ||
2626 | /* The type of none suggests that owner is actually deleted. | |
2627 | This should not ever happen. */ | |
35df4500 | 2628 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2629 | |
2630 | old_chain = save_current_space_and_thread (); | |
2631 | ||
35df4500 | 2632 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2633 | |
35df4500 | 2634 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2635 | |
2636 | do_cleanups (old_chain); | |
2637 | return ret; | |
2638 | } | |
2639 | ||
c906108c SS |
2640 | /* Clear the "inserted" flag in all breakpoints. */ |
2641 | ||
25b22b0a | 2642 | void |
fba45db2 | 2643 | mark_breakpoints_out (void) |
c906108c | 2644 | { |
35df4500 | 2645 | struct bp_location *bl, **blp_tmp; |
c906108c | 2646 | |
35df4500 TJB |
2647 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2648 | if (bl->pspace == current_program_space) | |
2649 | bl->inserted = 0; | |
c906108c SS |
2650 | } |
2651 | ||
53a5351d JM |
2652 | /* Clear the "inserted" flag in all breakpoints and delete any |
2653 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2654 | |
2655 | Plus other such housekeeping that has to be done for breakpoints | |
2656 | between runs. | |
2657 | ||
53a5351d JM |
2658 | Note: this function gets called at the end of a run (by |
2659 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2660 | init_wait_for_inferior). */ |
c906108c SS |
2661 | |
2662 | ||
2663 | ||
2664 | void | |
fba45db2 | 2665 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2666 | { |
35df4500 TJB |
2667 | struct breakpoint *b, *b_tmp; |
2668 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2669 | int ix; |
6c95b8df | 2670 | struct program_space *pspace = current_program_space; |
c906108c | 2671 | |
50c71eaf PA |
2672 | /* If breakpoint locations are shared across processes, then there's |
2673 | nothing to do. */ | |
2567c7d9 | 2674 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2675 | return; |
2676 | ||
35df4500 | 2677 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2678 | { |
35df4500 TJB |
2679 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2680 | if (bl->pspace == pspace | |
2681 | && bl->owner->enable_state != bp_permanent) | |
2682 | bl->inserted = 0; | |
6c95b8df | 2683 | } |
075f6582 | 2684 | |
35df4500 | 2685 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2686 | { |
6c95b8df PA |
2687 | if (b->loc && b->loc->pspace != pspace) |
2688 | continue; | |
2689 | ||
c5aa993b JM |
2690 | switch (b->type) |
2691 | { | |
2692 | case bp_call_dummy: | |
c906108c | 2693 | |
c5aa993b | 2694 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2695 | cause problems when the inferior is rerun, so we better get |
2696 | rid of it. */ | |
2697 | ||
2698 | case bp_watchpoint_scope: | |
2699 | ||
2700 | /* Also get rid of scope breakpoints. */ | |
2701 | ||
2702 | case bp_shlib_event: | |
2703 | ||
2704 | /* Also remove solib event breakpoints. Their addresses may | |
2705 | have changed since the last time we ran the program. | |
2706 | Actually we may now be debugging against different target; | |
2707 | and so the solib backend that installed this breakpoint may | |
2708 | not be used in by the target. E.g., | |
2709 | ||
2710 | (gdb) file prog-linux | |
2711 | (gdb) run # native linux target | |
2712 | ... | |
2713 | (gdb) kill | |
2714 | (gdb) file prog-win.exe | |
2715 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2716 | */ | |
c906108c | 2717 | |
c5aa993b JM |
2718 | delete_breakpoint (b); |
2719 | break; | |
c906108c | 2720 | |
c5aa993b JM |
2721 | case bp_watchpoint: |
2722 | case bp_hardware_watchpoint: | |
2723 | case bp_read_watchpoint: | |
2724 | case bp_access_watchpoint: | |
c906108c | 2725 | |
c5aa993b JM |
2726 | /* Likewise for watchpoints on local expressions. */ |
2727 | if (b->exp_valid_block != NULL) | |
2728 | delete_breakpoint (b); | |
967af18d | 2729 | else if (context == inf_starting) |
c860120c | 2730 | { |
4a64f543 MS |
2731 | /* Reset val field to force reread of starting value in |
2732 | insert_breakpoints. */ | |
c860120c PM |
2733 | if (b->val) |
2734 | value_free (b->val); | |
2735 | b->val = NULL; | |
fa4727a6 | 2736 | b->val_valid = 0; |
c860120c | 2737 | } |
c5aa993b JM |
2738 | break; |
2739 | default: | |
c5aa993b JM |
2740 | break; |
2741 | } | |
2742 | } | |
1c5cfe86 PA |
2743 | |
2744 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2745 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2746 | decref_bp_location (&bl); | |
1c5cfe86 | 2747 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2748 | } |
2749 | ||
6c95b8df PA |
2750 | /* These functions concern about actual breakpoints inserted in the |
2751 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2752 | we need to hop over the bkpt --- so we check for address space | |
2753 | match, not program space. */ | |
2754 | ||
c2c6d25f JM |
2755 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2756 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2757 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2758 | permanent breakpoint. | |
2759 | - When continuing from a location with an ordinary breakpoint, we | |
2760 | actually single step once before calling insert_breakpoints. | |
2761 | - When continuing from a localion with a permanent breakpoint, we | |
2762 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2763 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2764 | |
c2c6d25f | 2765 | enum breakpoint_here |
6c95b8df | 2766 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2767 | { |
35df4500 | 2768 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2769 | int any_breakpoint_here = 0; |
c906108c | 2770 | |
35df4500 | 2771 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2772 | { |
35df4500 TJB |
2773 | if (bl->loc_type != bp_loc_software_breakpoint |
2774 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2775 | continue; |
2776 | ||
35df4500 TJB |
2777 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2778 | if ((breakpoint_enabled (bl->owner) | |
2779 | || bl->owner->enable_state == bp_permanent) | |
2780 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2781 | aspace, pc)) |
075f6582 DJ |
2782 | { |
2783 | if (overlay_debugging | |
35df4500 TJB |
2784 | && section_is_overlay (bl->section) |
2785 | && !section_is_mapped (bl->section)) | |
075f6582 | 2786 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2787 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2788 | return permanent_breakpoint_here; |
2789 | else | |
2790 | any_breakpoint_here = 1; | |
2791 | } | |
2792 | } | |
c906108c | 2793 | |
c2c6d25f | 2794 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2795 | } |
2796 | ||
1c5cfe86 PA |
2797 | /* Return true if there's a moribund breakpoint at PC. */ |
2798 | ||
2799 | int | |
6c95b8df | 2800 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2801 | { |
2802 | struct bp_location *loc; | |
2803 | int ix; | |
2804 | ||
2805 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2806 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2807 | aspace, pc)) | |
1c5cfe86 PA |
2808 | return 1; |
2809 | ||
2810 | return 0; | |
2811 | } | |
c2c6d25f | 2812 | |
c36b740a | 2813 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2814 | inserted using regular breakpoint_chain / bp_location array |
2815 | mechanism. This does not check for single-step breakpoints, which | |
2816 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2817 | |
2818 | int | |
4a64f543 MS |
2819 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2820 | CORE_ADDR pc) | |
c906108c | 2821 | { |
35df4500 | 2822 | struct bp_location *bl, **blp_tmp; |
c906108c | 2823 | |
35df4500 | 2824 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2825 | { |
35df4500 TJB |
2826 | if (bl->loc_type != bp_loc_software_breakpoint |
2827 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2828 | continue; |
2829 | ||
35df4500 TJB |
2830 | if (bl->inserted |
2831 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2832 | aspace, pc)) |
075f6582 DJ |
2833 | { |
2834 | if (overlay_debugging | |
35df4500 TJB |
2835 | && section_is_overlay (bl->section) |
2836 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2837 | continue; /* unmapped overlay -- can't be a match */ |
2838 | else | |
2839 | return 1; | |
2840 | } | |
c5aa993b | 2841 | } |
c36b740a VP |
2842 | return 0; |
2843 | } | |
2844 | ||
2845 | /* Returns non-zero iff there's either regular breakpoint | |
2846 | or a single step breakpoint inserted at PC. */ | |
2847 | ||
2848 | int | |
6c95b8df | 2849 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2850 | { |
6c95b8df | 2851 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2852 | return 1; |
c906108c | 2853 | |
6c95b8df | 2854 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2855 | return 1; |
2856 | ||
c906108c SS |
2857 | return 0; |
2858 | } | |
2859 | ||
4fa8626c DJ |
2860 | /* This function returns non-zero iff there is a software breakpoint |
2861 | inserted at PC. */ | |
2862 | ||
2863 | int | |
3e43a32a MS |
2864 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2865 | CORE_ADDR pc) | |
4fa8626c | 2866 | { |
35df4500 | 2867 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2868 | |
35df4500 | 2869 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2870 | { |
35df4500 | 2871 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2872 | continue; |
2873 | ||
35df4500 TJB |
2874 | if (bl->inserted |
2875 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2876 | aspace, pc)) |
4fa8626c DJ |
2877 | { |
2878 | if (overlay_debugging | |
35df4500 TJB |
2879 | && section_is_overlay (bl->section) |
2880 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2881 | continue; /* unmapped overlay -- can't be a match */ |
2882 | else | |
2883 | return 1; | |
2884 | } | |
2885 | } | |
2886 | ||
1aafd4da | 2887 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2888 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2889 | return 1; |
2890 | ||
4fa8626c DJ |
2891 | return 0; |
2892 | } | |
2893 | ||
9093389c PA |
2894 | int |
2895 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2896 | CORE_ADDR addr, ULONGEST len) | |
2897 | { | |
2898 | struct breakpoint *bpt; | |
2899 | ||
2900 | ALL_BREAKPOINTS (bpt) | |
2901 | { | |
2902 | struct bp_location *loc; | |
2903 | ||
2904 | if (bpt->type != bp_hardware_watchpoint | |
2905 | && bpt->type != bp_access_watchpoint) | |
2906 | continue; | |
2907 | ||
2908 | if (!breakpoint_enabled (bpt)) | |
2909 | continue; | |
2910 | ||
2911 | for (loc = bpt->loc; loc; loc = loc->next) | |
2912 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2913 | { | |
2914 | CORE_ADDR l, h; | |
2915 | ||
2916 | /* Check for intersection. */ | |
2917 | l = max (loc->address, addr); | |
2918 | h = min (loc->address + loc->length, addr + len); | |
2919 | if (l < h) | |
2920 | return 1; | |
2921 | } | |
2922 | } | |
2923 | return 0; | |
2924 | } | |
2925 | ||
075f6582 DJ |
2926 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2927 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2928 | |
2929 | int | |
6c95b8df PA |
2930 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2931 | ptid_t ptid) | |
c906108c | 2932 | { |
35df4500 | 2933 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2934 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2935 | int thread = -1; |
4a306c9a | 2936 | int task = 0; |
a6f1cd96 | 2937 | |
35df4500 | 2938 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2939 | { |
35df4500 TJB |
2940 | if (bl->loc_type != bp_loc_software_breakpoint |
2941 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2942 | continue; |
2943 | ||
35df4500 TJB |
2944 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2945 | if (!breakpoint_enabled (bl->owner) | |
2946 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2947 | continue; |
2948 | ||
35df4500 | 2949 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
6c95b8df | 2950 | aspace, pc)) |
a6f1cd96 JB |
2951 | continue; |
2952 | ||
35df4500 | 2953 | if (bl->owner->thread != -1) |
075f6582 | 2954 | { |
a6f1cd96 JB |
2955 | /* This is a thread-specific breakpoint. Check that ptid |
2956 | matches that thread. If thread hasn't been computed yet, | |
2957 | it is now time to do so. */ | |
2958 | if (thread == -1) | |
2959 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2960 | if (bl->owner->thread != thread) |
a6f1cd96 | 2961 | continue; |
075f6582 | 2962 | } |
a6f1cd96 | 2963 | |
35df4500 | 2964 | if (bl->owner->task != 0) |
4a306c9a JB |
2965 | { |
2966 | /* This is a task-specific breakpoint. Check that ptid | |
2967 | matches that task. If task hasn't been computed yet, | |
2968 | it is now time to do so. */ | |
2969 | if (task == 0) | |
2970 | task = ada_get_task_number (ptid); | |
35df4500 | 2971 | if (bl->owner->task != task) |
4a306c9a JB |
2972 | continue; |
2973 | } | |
2974 | ||
a6f1cd96 | 2975 | if (overlay_debugging |
35df4500 TJB |
2976 | && section_is_overlay (bl->section) |
2977 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
2978 | continue; /* unmapped overlay -- can't be a match */ |
2979 | ||
2980 | return 1; | |
c5aa993b | 2981 | } |
c906108c SS |
2982 | |
2983 | return 0; | |
2984 | } | |
c906108c | 2985 | \f |
c5aa993b | 2986 | |
c906108c SS |
2987 | /* bpstat stuff. External routines' interfaces are documented |
2988 | in breakpoint.h. */ | |
2989 | ||
2990 | int | |
fba45db2 | 2991 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2992 | { |
533be4dd | 2993 | return (ep->type == bp_catchpoint); |
c906108c SS |
2994 | } |
2995 | ||
f431efe5 PA |
2996 | /* Frees any storage that is part of a bpstat. Does not walk the |
2997 | 'next' chain. */ | |
2998 | ||
2999 | static void | |
198757a8 VP |
3000 | bpstat_free (bpstat bs) |
3001 | { | |
3002 | if (bs->old_val != NULL) | |
3003 | value_free (bs->old_val); | |
9add0f1b | 3004 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3005 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3006 | xfree (bs); |
3007 | } | |
3008 | ||
c906108c SS |
3009 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3010 | Also free any storage that is part of a bpstat. */ | |
3011 | ||
3012 | void | |
fba45db2 | 3013 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3014 | { |
3015 | bpstat p; | |
3016 | bpstat q; | |
3017 | ||
3018 | if (bsp == 0) | |
3019 | return; | |
3020 | p = *bsp; | |
3021 | while (p != NULL) | |
3022 | { | |
3023 | q = p->next; | |
198757a8 | 3024 | bpstat_free (p); |
c906108c SS |
3025 | p = q; |
3026 | } | |
3027 | *bsp = NULL; | |
3028 | } | |
3029 | ||
3030 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3031 | is part of the bpstat is copied as well. */ | |
3032 | ||
3033 | bpstat | |
fba45db2 | 3034 | bpstat_copy (bpstat bs) |
c906108c SS |
3035 | { |
3036 | bpstat p = NULL; | |
3037 | bpstat tmp; | |
3038 | bpstat retval = NULL; | |
3039 | ||
3040 | if (bs == NULL) | |
3041 | return bs; | |
3042 | ||
3043 | for (; bs != NULL; bs = bs->next) | |
3044 | { | |
3045 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3046 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3047 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3048 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3049 | if (bs->old_val != NULL) |
3c3185ac JK |
3050 | { |
3051 | tmp->old_val = value_copy (bs->old_val); | |
3052 | release_value (tmp->old_val); | |
3053 | } | |
31cc81e9 | 3054 | |
c906108c SS |
3055 | if (p == NULL) |
3056 | /* This is the first thing in the chain. */ | |
3057 | retval = tmp; | |
3058 | else | |
3059 | p->next = tmp; | |
3060 | p = tmp; | |
3061 | } | |
3062 | p->next = NULL; | |
3063 | return retval; | |
3064 | } | |
3065 | ||
4a64f543 | 3066 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3067 | |
3068 | bpstat | |
fba45db2 | 3069 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3070 | { |
c5aa993b JM |
3071 | if (bsp == NULL) |
3072 | return NULL; | |
c906108c | 3073 | |
c5aa993b JM |
3074 | for (; bsp != NULL; bsp = bsp->next) |
3075 | { | |
f431efe5 | 3076 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3077 | return bsp; |
3078 | } | |
c906108c SS |
3079 | return NULL; |
3080 | } | |
3081 | ||
4a64f543 MS |
3082 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3083 | stopped at. *BSP upon return is a bpstat which points to the | |
3084 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3085 | good for anything but further calls to bpstat_num). | |
3086 | ||
8671a17b PA |
3087 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3088 | Return -1 if stopped at a breakpoint that has been deleted since | |
3089 | we set it. | |
3090 | Return 1 otherwise. */ | |
c906108c SS |
3091 | |
3092 | int | |
8671a17b | 3093 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3094 | { |
3095 | struct breakpoint *b; | |
3096 | ||
3097 | if ((*bsp) == NULL) | |
3098 | return 0; /* No more breakpoint values */ | |
8671a17b | 3099 | |
4a64f543 MS |
3100 | /* We assume we'll never have several bpstats that correspond to a |
3101 | single breakpoint -- otherwise, this function might return the | |
3102 | same number more than once and this will look ugly. */ | |
f431efe5 | 3103 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3104 | *bsp = (*bsp)->next; |
3105 | if (b == NULL) | |
3106 | return -1; /* breakpoint that's been deleted since */ | |
3107 | ||
3108 | *num = b->number; /* We have its number */ | |
3109 | return 1; | |
c906108c SS |
3110 | } |
3111 | ||
3112 | /* Modify BS so that the actions will not be performed. */ | |
3113 | ||
3114 | void | |
fba45db2 | 3115 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3116 | { |
3117 | for (; bs != NULL; bs = bs->next) | |
3118 | { | |
9add0f1b | 3119 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3120 | bs->commands_left = NULL; |
c906108c SS |
3121 | if (bs->old_val != NULL) |
3122 | { | |
3123 | value_free (bs->old_val); | |
3124 | bs->old_val = NULL; | |
3125 | } | |
3126 | } | |
3127 | } | |
3128 | ||
f3b1572e PA |
3129 | /* Called when a command is about to proceed the inferior. */ |
3130 | ||
3131 | static void | |
3132 | breakpoint_about_to_proceed (void) | |
3133 | { | |
3134 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3135 | { | |
3136 | struct thread_info *tp = inferior_thread (); | |
3137 | ||
3138 | /* Allow inferior function calls in breakpoint commands to not | |
3139 | interrupt the command list. When the call finishes | |
3140 | successfully, the inferior will be standing at the same | |
3141 | breakpoint as if nothing happened. */ | |
16c381f0 | 3142 | if (tp->control.in_infcall) |
f3b1572e PA |
3143 | return; |
3144 | } | |
3145 | ||
3146 | breakpoint_proceeded = 1; | |
3147 | } | |
3148 | ||
4a64f543 MS |
3149 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3150 | command. */ | |
c906108c | 3151 | static void |
4efb68b1 | 3152 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3153 | { |
3154 | executing_breakpoint_commands = 0; | |
3155 | } | |
3156 | ||
4a64f543 MS |
3157 | /* Execute all the commands associated with all the breakpoints at |
3158 | this location. Any of these commands could cause the process to | |
3159 | proceed beyond this point, etc. We look out for such changes by | |
3160 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3161 | |
347bddb7 PA |
3162 | Returns true if a breakpoint command resumed the inferior. In that |
3163 | case, it is the caller's responsibility to recall it again with the | |
3164 | bpstat of the current thread. */ | |
3165 | ||
3166 | static int | |
3167 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3168 | { |
3169 | bpstat bs; | |
3170 | struct cleanup *old_chain; | |
347bddb7 | 3171 | int again = 0; |
c906108c SS |
3172 | |
3173 | /* Avoid endless recursion if a `source' command is contained | |
3174 | in bs->commands. */ | |
3175 | if (executing_breakpoint_commands) | |
347bddb7 | 3176 | return 0; |
c906108c SS |
3177 | |
3178 | executing_breakpoint_commands = 1; | |
3179 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3180 | ||
4a64f543 | 3181 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3182 | bs = *bsp; |
3183 | ||
3184 | breakpoint_proceeded = 0; | |
3185 | for (; bs != NULL; bs = bs->next) | |
3186 | { | |
9add0f1b | 3187 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3188 | struct command_line *cmd; |
3189 | struct cleanup *this_cmd_tree_chain; | |
3190 | ||
3191 | /* Take ownership of the BSP's command tree, if it has one. | |
3192 | ||
3193 | The command tree could legitimately contain commands like | |
3194 | 'step' and 'next', which call clear_proceed_status, which | |
3195 | frees stop_bpstat's command tree. To make sure this doesn't | |
3196 | free the tree we're executing out from under us, we need to | |
3197 | take ownership of the tree ourselves. Since a given bpstat's | |
3198 | commands are only executed once, we don't need to copy it; we | |
3199 | can clear the pointer in the bpstat, and make sure we free | |
3200 | the tree when we're done. */ | |
9add0f1b TT |
3201 | ccmd = bs->commands; |
3202 | bs->commands = NULL; | |
3203 | this_cmd_tree_chain | |
3204 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3205 | cmd = bs->commands_left; | |
3206 | bs->commands_left = NULL; | |
6c50ab1c | 3207 | |
c906108c SS |
3208 | while (cmd != NULL) |
3209 | { | |
3210 | execute_control_command (cmd); | |
3211 | ||
3212 | if (breakpoint_proceeded) | |
3213 | break; | |
3214 | else | |
3215 | cmd = cmd->next; | |
3216 | } | |
6c50ab1c JB |
3217 | |
3218 | /* We can free this command tree now. */ | |
3219 | do_cleanups (this_cmd_tree_chain); | |
3220 | ||
c906108c | 3221 | if (breakpoint_proceeded) |
32c1e744 VP |
3222 | { |
3223 | if (target_can_async_p ()) | |
347bddb7 PA |
3224 | /* If we are in async mode, then the target might be still |
3225 | running, not stopped at any breakpoint, so nothing for | |
3226 | us to do here -- just return to the event loop. */ | |
3227 | ; | |
32c1e744 VP |
3228 | else |
3229 | /* In sync mode, when execute_control_command returns | |
3230 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3231 | Breakpoint commands for that stop were not run, since |
3232 | execute_command does not run breakpoint commands -- | |
3233 | only command_line_handler does, but that one is not | |
3234 | involved in execution of breakpoint commands. So, we | |
3235 | can now execute breakpoint commands. It should be | |
3236 | noted that making execute_command do bpstat actions is | |
3237 | not an option -- in this case we'll have recursive | |
3238 | invocation of bpstat for each breakpoint with a | |
3239 | command, and can easily blow up GDB stack. Instead, we | |
3240 | return true, which will trigger the caller to recall us | |
3241 | with the new stop_bpstat. */ | |
3242 | again = 1; | |
3243 | break; | |
32c1e744 | 3244 | } |
c906108c | 3245 | } |
c2b8ed2c | 3246 | do_cleanups (old_chain); |
347bddb7 PA |
3247 | return again; |
3248 | } | |
3249 | ||
3250 | void | |
3251 | bpstat_do_actions (void) | |
3252 | { | |
3253 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3254 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3255 | && target_has_execution | |
3256 | && !is_exited (inferior_ptid) | |
3257 | && !is_executing (inferior_ptid)) | |
3258 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3259 | and only return when it is stopped at the next breakpoint, we | |
3260 | keep doing breakpoint actions until it returns false to | |
3261 | indicate the inferior was not resumed. */ | |
16c381f0 | 3262 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3263 | break; |
c906108c SS |
3264 | } |
3265 | ||
fa4727a6 DJ |
3266 | /* Print out the (old or new) value associated with a watchpoint. */ |
3267 | ||
3268 | static void | |
3269 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3270 | { | |
3271 | if (val == NULL) | |
3272 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3273 | else | |
79a45b7d TT |
3274 | { |
3275 | struct value_print_options opts; | |
3276 | get_user_print_options (&opts); | |
3277 | value_print (val, stream, &opts); | |
3278 | } | |
fa4727a6 DJ |
3279 | } |
3280 | ||
e514a9d6 | 3281 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3282 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3283 | by having it set different print_it values. |
3284 | ||
3285 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3286 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3287 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3288 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3289 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3290 | |
3291 | Return values from this routine (ultimately used by bpstat_print() | |
3292 | and normal_stop() to decide what to do): | |
3293 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3294 | don't print anything else. | |
3295 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3296 | that something to be followed by a location. | |
3297 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3298 | that something to be followed by a location. | |
3299 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3300 | analysis. */ | |
c906108c | 3301 | |
917317f4 | 3302 | static enum print_stop_action |
fba45db2 | 3303 | print_it_typical (bpstat bs) |
c906108c | 3304 | { |
f7545552 | 3305 | struct cleanup *old_chain; |
4f8d1dc6 | 3306 | struct breakpoint *b; |
89f9893c | 3307 | const struct bp_location *bl; |
8b93c638 | 3308 | struct ui_stream *stb; |
f7545552 TT |
3309 | int bp_temp = 0; |
3310 | enum print_stop_action result; | |
3311 | ||
f431efe5 PA |
3312 | gdb_assert (bs->bp_location_at != NULL); |
3313 | ||
3314 | bl = bs->bp_location_at; | |
3315 | b = bs->breakpoint_at; | |
c906108c | 3316 | |
f7545552 TT |
3317 | stb = ui_out_stream_new (uiout); |
3318 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3319 | ||
4f8d1dc6 | 3320 | switch (b->type) |
c906108c | 3321 | { |
e514a9d6 JM |
3322 | case bp_breakpoint: |
3323 | case bp_hardware_breakpoint: | |
f431efe5 | 3324 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3325 | if (bl->address != bl->requested_address) |
3326 | breakpoint_adjustment_warning (bl->requested_address, | |
3327 | bl->address, | |
4f8d1dc6 VP |
3328 | b->number, 1); |
3329 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3330 | if (bp_temp) |
3331 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3332 | else | |
3333 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3334 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3335 | { |
3336 | ui_out_field_string (uiout, "reason", | |
3337 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3338 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3339 | } | |
4f8d1dc6 | 3340 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3341 | ui_out_text (uiout, ", "); |
f7545552 | 3342 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3343 | break; |
3344 | ||
3345 | case bp_shlib_event: | |
917317f4 JM |
3346 | /* Did we stop because the user set the stop_on_solib_events |
3347 | variable? (If so, we report this as a generic, "Stopped due | |
3348 | to shlib event" message.) */ | |
a3f17187 | 3349 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3350 | result = PRINT_NOTHING; |
e514a9d6 JM |
3351 | break; |
3352 | ||
c4093a6a | 3353 | case bp_thread_event: |
4a64f543 | 3354 | /* Not sure how we will get here. |
c4093a6a | 3355 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3356 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3357 | result = PRINT_NOTHING; |
c4093a6a JM |
3358 | break; |
3359 | ||
1900040c | 3360 | case bp_overlay_event: |
4a64f543 | 3361 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3362 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3363 | result = PRINT_NOTHING; |
1900040c MS |
3364 | break; |
3365 | ||
0fd8e87f UW |
3366 | case bp_longjmp_master: |
3367 | /* These should never be enabled. */ | |
3368 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3369 | result = PRINT_NOTHING; | |
3370 | break; | |
3371 | ||
aa7d318d TT |
3372 | case bp_std_terminate_master: |
3373 | /* These should never be enabled. */ | |
3e43a32a MS |
3374 | printf_filtered (_("std::terminate Master Breakpoint: " |
3375 | "gdb should not stop!\n")); | |
aa7d318d TT |
3376 | result = PRINT_NOTHING; |
3377 | break; | |
3378 | ||
186c406b TT |
3379 | case bp_exception_master: |
3380 | /* These should never be enabled. */ | |
3e43a32a MS |
3381 | printf_filtered (_("Exception Master Breakpoint: " |
3382 | "gdb should not stop!\n")); | |
186c406b TT |
3383 | result = PRINT_NOTHING; |
3384 | break; | |
3385 | ||
e514a9d6 JM |
3386 | case bp_watchpoint: |
3387 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3388 | annotate_watchpoint (b->number); |
3389 | if (ui_out_is_mi_like_p (uiout)) | |
3390 | ui_out_field_string | |
3391 | (uiout, "reason", | |
3392 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3393 | mention (b); | |
f7545552 | 3394 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3395 | ui_out_text (uiout, "\nOld value = "); |
3396 | watchpoint_value_print (bs->old_val, stb->stream); | |
3397 | ui_out_field_stream (uiout, "old", stb); | |
3398 | ui_out_text (uiout, "\nNew value = "); | |
3399 | watchpoint_value_print (b->val, stb->stream); | |
3400 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3401 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3402 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3403 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3404 | break; |
3405 | ||
3406 | case bp_read_watchpoint: | |
9dc5e2a9 | 3407 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3408 | ui_out_field_string |
3409 | (uiout, "reason", | |
3410 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3411 | mention (b); |
f7545552 | 3412 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3413 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3414 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3415 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3416 | ui_out_text (uiout, "\n"); |
f7545552 | 3417 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3418 | break; |
3419 | ||
3420 | case bp_access_watchpoint: | |
fa4727a6 | 3421 | if (bs->old_val != NULL) |
8b93c638 | 3422 | { |
4f8d1dc6 | 3423 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3424 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3425 | ui_out_field_string |
3426 | (uiout, "reason", | |
3427 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3428 | mention (b); |
f7545552 | 3429 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3430 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3431 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3432 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3433 | ui_out_text (uiout, "\nNew value = "); |
3434 | } | |
3435 | else | |
3436 | { | |
4f8d1dc6 | 3437 | mention (b); |
9dc5e2a9 | 3438 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3439 | ui_out_field_string |
3440 | (uiout, "reason", | |
3441 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3442 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3443 | ui_out_text (uiout, "\nValue = "); |
3444 | } | |
fa4727a6 | 3445 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3446 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3447 | ui_out_text (uiout, "\n"); |
f7545552 | 3448 | result = PRINT_UNKNOWN; |
e514a9d6 | 3449 | break; |
4ce44c66 | 3450 | |
e514a9d6 | 3451 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3452 | here. */ |
e514a9d6 | 3453 | |
11cf8741 | 3454 | case bp_finish: |
9dc5e2a9 | 3455 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3456 | ui_out_field_string |
3457 | (uiout, "reason", | |
3458 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3459 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3460 | break; |
3461 | ||
e514a9d6 | 3462 | case bp_until: |
9dc5e2a9 | 3463 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3464 | ui_out_field_string |
3465 | (uiout, "reason", | |
3466 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3467 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3468 | break; |
3469 | ||
c2d11a7d | 3470 | case bp_none: |
e514a9d6 JM |
3471 | case bp_longjmp: |
3472 | case bp_longjmp_resume: | |
186c406b TT |
3473 | case bp_exception: |
3474 | case bp_exception_resume: | |
e514a9d6 | 3475 | case bp_step_resume: |
e514a9d6 JM |
3476 | case bp_watchpoint_scope: |
3477 | case bp_call_dummy: | |
aa7d318d | 3478 | case bp_std_terminate: |
1042e4c0 | 3479 | case bp_tracepoint: |
7a697b8d | 3480 | case bp_fast_tracepoint: |
4efc6507 | 3481 | case bp_jit_event: |
e514a9d6 | 3482 | default: |
f7545552 TT |
3483 | result = PRINT_UNKNOWN; |
3484 | break; | |
e514a9d6 | 3485 | } |
f7545552 TT |
3486 | |
3487 | do_cleanups (old_chain); | |
3488 | return result; | |
e514a9d6 JM |
3489 | } |
3490 | ||
3491 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3492 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3493 | 'print_it' in the bpstat structure. Under some circumstances we |
3494 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3495 | normal_stop(). */ |
e514a9d6 JM |
3496 | |
3497 | static enum print_stop_action | |
3498 | print_bp_stop_message (bpstat bs) | |
3499 | { | |
3500 | switch (bs->print_it) | |
3501 | { | |
3502 | case print_it_noop: | |
4a64f543 | 3503 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3504 | return PRINT_UNKNOWN; |
3505 | break; | |
3506 | ||
3507 | case print_it_done: | |
3508 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3509 | relevant messages. */ |
e514a9d6 JM |
3510 | return PRINT_SRC_AND_LOC; |
3511 | break; | |
3512 | ||
3513 | case print_it_normal: | |
4f8d1dc6 | 3514 | { |
f431efe5 PA |
3515 | struct breakpoint *b = bs->breakpoint_at; |
3516 | ||
1a6a67de TJB |
3517 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3518 | which has since been deleted. */ | |
3519 | if (b == NULL) | |
3520 | return PRINT_UNKNOWN; | |
3521 | ||
4f8d1dc6 VP |
3522 | /* Normal case. Call the breakpoint's print_it method, or |
3523 | print_it_typical. */ | |
1a6a67de | 3524 | if (b->ops != NULL && b->ops->print_it != NULL) |
4f8d1dc6 VP |
3525 | return b->ops->print_it (b); |
3526 | else | |
3527 | return print_it_typical (bs); | |
3528 | } | |
3529 | break; | |
3086aeae | 3530 | |
e514a9d6 | 3531 | default: |
8e65ff28 | 3532 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3533 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3534 | break; |
c906108c | 3535 | } |
c906108c SS |
3536 | } |
3537 | ||
e514a9d6 JM |
3538 | /* Print a message indicating what happened. This is called from |
3539 | normal_stop(). The input to this routine is the head of the bpstat | |
3540 | list - a list of the eventpoints that caused this stop. This | |
3541 | routine calls the generic print routine for printing a message | |
3542 | about reasons for stopping. This will print (for example) the | |
3543 | "Breakpoint n," part of the output. The return value of this | |
3544 | routine is one of: | |
c906108c | 3545 | |
4a64f543 | 3546 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3547 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3548 | code to print the location. An example is |
c5aa993b JM |
3549 | "Breakpoint 1, " which should be followed by |
3550 | the location. | |
917317f4 | 3551 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3552 | to also print the location part of the message. |
3553 | An example is the catch/throw messages, which | |
4a64f543 | 3554 | don't require a location appended to the end. |
917317f4 | 3555 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3556 | further info to be printed. */ |
c906108c | 3557 | |
917317f4 | 3558 | enum print_stop_action |
fba45db2 | 3559 | bpstat_print (bpstat bs) |
c906108c SS |
3560 | { |
3561 | int val; | |
c5aa993b | 3562 | |
c906108c | 3563 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3564 | (Currently all watchpoints go on the bpstat whether hit or not. |
3565 | That probably could (should) be changed, provided care is taken | |
c906108c | 3566 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3567 | for (; bs; bs = bs->next) |
3568 | { | |
3569 | val = print_bp_stop_message (bs); | |
3570 | if (val == PRINT_SRC_ONLY | |
3571 | || val == PRINT_SRC_AND_LOC | |
3572 | || val == PRINT_NOTHING) | |
3573 | return val; | |
3574 | } | |
c906108c | 3575 | |
e514a9d6 | 3576 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3577 | with and nothing was printed. */ |
917317f4 | 3578 | return PRINT_UNKNOWN; |
c906108c SS |
3579 | } |
3580 | ||
4a64f543 MS |
3581 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3582 | used inside a catch_errors to evaluate the breakpoint condition. | |
3583 | The argument is a "struct expression *" that has been cast to a | |
3584 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3585 | |
3586 | static int | |
4efb68b1 | 3587 | breakpoint_cond_eval (void *exp) |
c906108c | 3588 | { |
278cd55f | 3589 | struct value *mark = value_mark (); |
c5aa993b | 3590 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3591 | |
c906108c SS |
3592 | value_free_to_mark (mark); |
3593 | return i; | |
3594 | } | |
3595 | ||
5760d0ab | 3596 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3597 | |
3598 | static bpstat | |
5760d0ab | 3599 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3600 | { |
3601 | bpstat bs; | |
3602 | ||
3603 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3604 | bs->next = NULL; |
3605 | **bs_link_pointer = bs; | |
3606 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3607 | bs->breakpoint_at = bl->owner; |
3608 | bs->bp_location_at = bl; | |
3609 | incref_bp_location (bl); | |
c906108c SS |
3610 | /* If the condition is false, etc., don't do the commands. */ |
3611 | bs->commands = NULL; | |
9add0f1b | 3612 | bs->commands_left = NULL; |
c906108c SS |
3613 | bs->old_val = NULL; |
3614 | bs->print_it = print_it_normal; | |
3615 | return bs; | |
3616 | } | |
3617 | \f | |
d983da9c DJ |
3618 | /* The target has stopped with waitstatus WS. Check if any hardware |
3619 | watchpoints have triggered, according to the target. */ | |
3620 | ||
3621 | int | |
3622 | watchpoints_triggered (struct target_waitstatus *ws) | |
3623 | { | |
d92524f1 | 3624 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3625 | CORE_ADDR addr; |
3626 | struct breakpoint *b; | |
3627 | ||
3628 | if (!stopped_by_watchpoint) | |
3629 | { | |
3630 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3631 | as not triggered. */ | |
3632 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3633 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3634 | b->watchpoint_triggered = watch_triggered_no; |
3635 | ||
3636 | return 0; | |
3637 | } | |
3638 | ||
3639 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3640 | { | |
3641 | /* We were stopped by a watchpoint, but we don't know where. | |
3642 | Mark all watchpoints as unknown. */ | |
3643 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3644 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3645 | b->watchpoint_triggered = watch_triggered_unknown; |
3646 | ||
3647 | return stopped_by_watchpoint; | |
3648 | } | |
3649 | ||
3650 | /* The target could report the data address. Mark watchpoints | |
3651 | affected by this data address as triggered, and all others as not | |
3652 | triggered. */ | |
3653 | ||
3654 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3655 | if (is_hardware_watchpoint (b)) |
d983da9c | 3656 | { |
a5606eee | 3657 | struct bp_location *loc; |
d983da9c DJ |
3658 | |
3659 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3660 | for (loc = b->loc; loc; loc = loc->next) |
3661 | /* Exact match not required. Within range is | |
3662 | sufficient. */ | |
5009afc5 AS |
3663 | if (target_watchpoint_addr_within_range (¤t_target, |
3664 | addr, loc->address, | |
3665 | loc->length)) | |
a5606eee VP |
3666 | { |
3667 | b->watchpoint_triggered = watch_triggered_yes; | |
3668 | break; | |
3669 | } | |
d983da9c DJ |
3670 | } |
3671 | ||
3672 | return 1; | |
3673 | } | |
3674 | ||
c906108c SS |
3675 | /* Possible return values for watchpoint_check (this can't be an enum |
3676 | because of check_errors). */ | |
3677 | /* The watchpoint has been deleted. */ | |
3678 | #define WP_DELETED 1 | |
3679 | /* The value has changed. */ | |
3680 | #define WP_VALUE_CHANGED 2 | |
3681 | /* The value has not changed. */ | |
3682 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3683 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3684 | #define WP_IGNORE 4 | |
c906108c SS |
3685 | |
3686 | #define BP_TEMPFLAG 1 | |
3687 | #define BP_HARDWAREFLAG 2 | |
3688 | ||
4a64f543 MS |
3689 | /* Evaluate watchpoint condition expression and check if its value |
3690 | changed. | |
553e4c11 JB |
3691 | |
3692 | P should be a pointer to struct bpstat, but is defined as a void * | |
3693 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3694 | |
3695 | static int | |
4efb68b1 | 3696 | watchpoint_check (void *p) |
c906108c SS |
3697 | { |
3698 | bpstat bs = (bpstat) p; | |
3699 | struct breakpoint *b; | |
3700 | struct frame_info *fr; | |
3701 | int within_current_scope; | |
3702 | ||
f431efe5 | 3703 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3704 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3705 | b = bs->breakpoint_at; |
c906108c | 3706 | |
f6bc2008 PA |
3707 | /* If this is a local watchpoint, we only want to check if the |
3708 | watchpoint frame is in scope if the current thread is the thread | |
3709 | that was used to create the watchpoint. */ | |
3710 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3711 | return WP_IGNORE; |
f6bc2008 | 3712 | |
c906108c SS |
3713 | if (b->exp_valid_block == NULL) |
3714 | within_current_scope = 1; | |
3715 | else | |
3716 | { | |
edb3359d DJ |
3717 | struct frame_info *frame = get_current_frame (); |
3718 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3719 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3720 | ||
4a64f543 MS |
3721 | /* in_function_epilogue_p() returns a non-zero value if we're |
3722 | still in the function but the stack frame has already been | |
3723 | invalidated. Since we can't rely on the values of local | |
3724 | variables after the stack has been destroyed, we are treating | |
3725 | the watchpoint in that state as `not changed' without further | |
3726 | checking. Don't mark watchpoints as changed if the current | |
3727 | frame is in an epilogue - even if they are in some other | |
3728 | frame, our view of the stack is likely to be wrong and | |
3729 | frame_find_by_id could error out. */ | |
a0f49112 | 3730 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3731 | return WP_IGNORE; |
a0f49112 | 3732 | |
101dcfbe | 3733 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3734 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3735 | |
3736 | /* If we've gotten confused in the unwinder, we might have | |
3737 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3738 | if (within_current_scope) |
3739 | { | |
3740 | struct symbol *function; | |
3741 | ||
3742 | function = get_frame_function (fr); | |
3743 | if (function == NULL | |
3744 | || !contained_in (b->exp_valid_block, | |
3745 | SYMBOL_BLOCK_VALUE (function))) | |
3746 | within_current_scope = 0; | |
3747 | } | |
69fbadd5 | 3748 | |
edb3359d | 3749 | if (within_current_scope) |
c906108c SS |
3750 | /* If we end up stopping, the current frame will get selected |
3751 | in normal_stop. So this call to select_frame won't affect | |
3752 | the user. */ | |
0f7d239c | 3753 | select_frame (fr); |
c906108c | 3754 | } |
c5aa993b | 3755 | |
c906108c SS |
3756 | if (within_current_scope) |
3757 | { | |
4a64f543 MS |
3758 | /* We use value_{,free_to_}mark because it could be a *long* |
3759 | time before we return to the command level and call | |
3760 | free_all_values. We can't call free_all_values because we | |
3761 | might be in the middle of evaluating a function call. */ | |
c906108c | 3762 | |
0cf6dd15 | 3763 | int pc = 0; |
278cd55f | 3764 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3765 | struct value *new_val; |
3766 | ||
0cf6dd15 | 3767 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3768 | |
4a64f543 MS |
3769 | /* We use value_equal_contents instead of value_equal because |
3770 | the latter coerces an array to a pointer, thus comparing just | |
3771 | the address of the array instead of its contents. This is | |
3772 | not what we want. */ | |
fa4727a6 | 3773 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3774 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3775 | { |
fa4727a6 DJ |
3776 | if (new_val != NULL) |
3777 | { | |
3778 | release_value (new_val); | |
3779 | value_free_to_mark (mark); | |
3780 | } | |
c906108c SS |
3781 | bs->old_val = b->val; |
3782 | b->val = new_val; | |
fa4727a6 | 3783 | b->val_valid = 1; |
c906108c SS |
3784 | return WP_VALUE_CHANGED; |
3785 | } | |
3786 | else | |
3787 | { | |
60e1c644 | 3788 | /* Nothing changed. */ |
c906108c | 3789 | value_free_to_mark (mark); |
c906108c SS |
3790 | return WP_VALUE_NOT_CHANGED; |
3791 | } | |
3792 | } | |
3793 | else | |
3794 | { | |
3795 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3796 | if we temporarily ignored the watchpoint, then when |
3797 | we reenter the block in which it is valid it contains | |
3798 | garbage (in the case of a function, it may have two | |
3799 | garbage values, one before and one after the prologue). | |
3800 | So we can't even detect the first assignment to it and | |
3801 | watch after that (since the garbage may or may not equal | |
3802 | the first value assigned). */ | |
4ce44c66 JM |
3803 | /* We print all the stop information in print_it_typical(), but |
3804 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3805 | will be deleted already. So we have no choice but print the |
3806 | information here. */ | |
9dc5e2a9 | 3807 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3808 | ui_out_field_string |
3809 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3810 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3811 | ui_out_field_int (uiout, "wpnum", b->number); |
3e43a32a MS |
3812 | ui_out_text (uiout, |
3813 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3814 | which its expression is valid.\n"); |
4ce44c66 | 3815 | |
c906108c | 3816 | if (b->related_breakpoint) |
60e1c644 PA |
3817 | { |
3818 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3819 | b->related_breakpoint->related_breakpoint = NULL; | |
3820 | b->related_breakpoint = NULL; | |
3821 | } | |
b5de0fa7 | 3822 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3823 | |
3824 | return WP_DELETED; | |
3825 | } | |
3826 | } | |
3827 | ||
18a18393 VP |
3828 | /* Return true if it looks like target has stopped due to hitting |
3829 | breakpoint location BL. This function does not check if we | |
3830 | should stop, only if BL explains the stop. */ | |
3831 | static int | |
6c95b8df PA |
3832 | bpstat_check_location (const struct bp_location *bl, |
3833 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3834 | { |
3835 | struct breakpoint *b = bl->owner; | |
3836 | ||
2bdf28a0 JK |
3837 | /* BL is from existing struct breakpoint. */ |
3838 | gdb_assert (b != NULL); | |
3839 | ||
e8595ef6 SS |
3840 | /* By definition, the inferior does not report stops at |
3841 | tracepoints. */ | |
d77f58be | 3842 | if (is_tracepoint (b)) |
e8595ef6 SS |
3843 | return 0; |
3844 | ||
cc60f2e3 | 3845 | if (!is_watchpoint (b) |
18a18393 | 3846 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3847 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3848 | { |
6c95b8df PA |
3849 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3850 | aspace, bp_addr)) | |
18a18393 VP |
3851 | return 0; |
3852 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3853 | && section_is_overlay (bl->section) |
18a18393 VP |
3854 | && !section_is_mapped (bl->section)) |
3855 | return 0; | |
3856 | } | |
cc60f2e3 | 3857 | |
18a18393 VP |
3858 | /* Continuable hardware watchpoints are treated as non-existent if the |
3859 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3860 | some data address). Otherwise gdb won't stop on a break instruction | |
3861 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3862 | been defined. Also skip watchpoints which we know did not trigger | |
3863 | (did not match the data address). */ | |
cc60f2e3 PA |
3864 | |
3865 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3866 | && b->watchpoint_triggered == watch_triggered_no) |
3867 | return 0; | |
3868 | ||
3869 | if (b->type == bp_hardware_breakpoint) | |
3870 | { | |
3871 | if (bl->address != bp_addr) | |
3872 | return 0; | |
3873 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3874 | && section_is_overlay (bl->section) |
18a18393 VP |
3875 | && !section_is_mapped (bl->section)) |
3876 | return 0; | |
3877 | } | |
ce78b96d | 3878 | |
ce78b96d JB |
3879 | if (b->type == bp_catchpoint) |
3880 | { | |
3881 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3882 | if (!b->ops->breakpoint_hit (b)) | |
3883 | return 0; | |
3884 | } | |
3885 | ||
18a18393 VP |
3886 | return 1; |
3887 | } | |
3888 | ||
3889 | /* If BS refers to a watchpoint, determine if the watched values | |
3890 | has actually changed, and we should stop. If not, set BS->stop | |
3891 | to 0. */ | |
3892 | static void | |
3893 | bpstat_check_watchpoint (bpstat bs) | |
3894 | { | |
2bdf28a0 JK |
3895 | const struct bp_location *bl; |
3896 | struct breakpoint *b; | |
3897 | ||
3898 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3899 | bl = bs->bp_location_at; |
2bdf28a0 | 3900 | gdb_assert (bl != NULL); |
f431efe5 | 3901 | b = bs->breakpoint_at; |
2bdf28a0 | 3902 | gdb_assert (b != NULL); |
18a18393 | 3903 | |
cc60f2e3 | 3904 | if (is_watchpoint (b)) |
18a18393 | 3905 | { |
18a18393 VP |
3906 | int must_check_value = 0; |
3907 | ||
3908 | if (b->type == bp_watchpoint) | |
3909 | /* For a software watchpoint, we must always check the | |
3910 | watched value. */ | |
3911 | must_check_value = 1; | |
3912 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3913 | /* We have a hardware watchpoint (read, write, or access) | |
3914 | and the target earlier reported an address watched by | |
3915 | this watchpoint. */ | |
3916 | must_check_value = 1; | |
3917 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3918 | && b->type == bp_hardware_watchpoint) | |
3919 | /* We were stopped by a hardware watchpoint, but the target could | |
3920 | not report the data address. We must check the watchpoint's | |
3921 | value. Access and read watchpoints are out of luck; without | |
3922 | a data address, we can't figure it out. */ | |
3923 | must_check_value = 1; | |
3924 | ||
3925 | if (must_check_value) | |
3926 | { | |
3e43a32a MS |
3927 | char *message |
3928 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3929 | b->number); | |
18a18393 VP |
3930 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3931 | int e = catch_errors (watchpoint_check, bs, message, | |
3932 | RETURN_MASK_ALL); | |
3933 | do_cleanups (cleanups); | |
3934 | switch (e) | |
3935 | { | |
3936 | case WP_DELETED: | |
3937 | /* We've already printed what needs to be printed. */ | |
3938 | bs->print_it = print_it_done; | |
3939 | /* Stop. */ | |
3940 | break; | |
60e1c644 PA |
3941 | case WP_IGNORE: |
3942 | bs->print_it = print_it_noop; | |
3943 | bs->stop = 0; | |
3944 | break; | |
18a18393 VP |
3945 | case WP_VALUE_CHANGED: |
3946 | if (b->type == bp_read_watchpoint) | |
3947 | { | |
85d721b8 PA |
3948 | /* There are two cases to consider here: |
3949 | ||
4a64f543 | 3950 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3951 | In that case, trust the target, and always report |
3952 | the watchpoint hit to the user. Even though | |
3953 | reads don't cause value changes, the value may | |
3954 | have changed since the last time it was read, and | |
3955 | since we're not trapping writes, we will not see | |
3956 | those, and as such we should ignore our notion of | |
3957 | old value. | |
3958 | ||
4a64f543 | 3959 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3960 | reads and writes. There are two ways this may |
3961 | happen: | |
3962 | ||
4a64f543 | 3963 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3964 | reads only, but can break on accesses (reads or |
3965 | writes), such as e.g., x86. We detect this case | |
3966 | at the time we try to insert read watchpoints. | |
3967 | ||
4a64f543 | 3968 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3969 | watchpoints, but, the user set an access or write |
3970 | watchpoint watching the same memory as this read | |
3971 | watchpoint. | |
3972 | ||
3973 | If we're watching memory writes as well as reads, | |
3974 | ignore watchpoint hits when we find that the | |
3975 | value hasn't changed, as reads don't cause | |
3976 | changes. This still gives false positives when | |
3977 | the program writes the same value to memory as | |
3978 | what there was already in memory (we will confuse | |
3979 | it for a read), but it's much better than | |
3980 | nothing. */ | |
3981 | ||
3982 | int other_write_watchpoint = 0; | |
3983 | ||
3984 | if (bl->watchpoint_type == hw_read) | |
3985 | { | |
3986 | struct breakpoint *other_b; | |
3987 | ||
3988 | ALL_BREAKPOINTS (other_b) | |
3989 | if ((other_b->type == bp_hardware_watchpoint | |
3990 | || other_b->type == bp_access_watchpoint) | |
3991 | && (other_b->watchpoint_triggered | |
3992 | == watch_triggered_yes)) | |
3993 | { | |
3994 | other_write_watchpoint = 1; | |
3995 | break; | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | if (other_write_watchpoint | |
4000 | || bl->watchpoint_type == hw_access) | |
4001 | { | |
4002 | /* We're watching the same memory for writes, | |
4003 | and the value changed since the last time we | |
4004 | updated it, so this trap must be for a write. | |
4005 | Ignore it. */ | |
4006 | bs->print_it = print_it_noop; | |
4007 | bs->stop = 0; | |
4008 | } | |
18a18393 VP |
4009 | } |
4010 | break; | |
4011 | case WP_VALUE_NOT_CHANGED: | |
4012 | if (b->type == bp_hardware_watchpoint | |
4013 | || b->type == bp_watchpoint) | |
4014 | { | |
4015 | /* Don't stop: write watchpoints shouldn't fire if | |
4016 | the value hasn't changed. */ | |
4017 | bs->print_it = print_it_noop; | |
4018 | bs->stop = 0; | |
4019 | } | |
4020 | /* Stop. */ | |
4021 | break; | |
4022 | default: | |
4023 | /* Can't happen. */ | |
4024 | case 0: | |
4025 | /* Error from catch_errors. */ | |
4026 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
4027 | if (b->related_breakpoint) | |
4028 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
4029 | b->disposition = disp_del_at_next_stop; | |
4030 | /* We've already printed what needs to be printed. */ | |
4031 | bs->print_it = print_it_done; | |
4032 | break; | |
4033 | } | |
4034 | } | |
4035 | else /* must_check_value == 0 */ | |
4036 | { | |
4037 | /* This is a case where some watchpoint(s) triggered, but | |
4038 | not at the address of this watchpoint, or else no | |
4039 | watchpoint triggered after all. So don't print | |
4040 | anything for this watchpoint. */ | |
4041 | bs->print_it = print_it_noop; | |
4042 | bs->stop = 0; | |
4043 | } | |
4044 | } | |
4045 | } | |
4046 | ||
4047 | ||
4048 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4049 | of breakpoint referred to by BS. If we should not stop for this | |
4050 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4051 | |
18a18393 VP |
4052 | static void |
4053 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4054 | { | |
4055 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4056 | const struct bp_location *bl; |
4057 | struct breakpoint *b; | |
4058 | ||
4059 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4060 | bl = bs->bp_location_at; |
2bdf28a0 | 4061 | gdb_assert (bl != NULL); |
f431efe5 | 4062 | b = bs->breakpoint_at; |
2bdf28a0 | 4063 | gdb_assert (b != NULL); |
18a18393 VP |
4064 | |
4065 | if (frame_id_p (b->frame_id) | |
edb3359d | 4066 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4067 | bs->stop = 0; |
4068 | else if (bs->stop) | |
4069 | { | |
4070 | int value_is_zero = 0; | |
60e1c644 PA |
4071 | struct expression *cond; |
4072 | ||
60e1c644 PA |
4073 | if (is_watchpoint (b)) |
4074 | cond = b->cond_exp; | |
4075 | else | |
4076 | cond = bl->cond; | |
4077 | ||
f431efe5 | 4078 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4079 | { |
60e1c644 PA |
4080 | int within_current_scope = 1; |
4081 | ||
c5bc3a77 DJ |
4082 | /* We use value_mark and value_free_to_mark because it could |
4083 | be a long time before we return to the command level and | |
4084 | call free_all_values. We can't call free_all_values | |
4085 | because we might be in the middle of evaluating a | |
4086 | function call. */ | |
4087 | struct value *mark = value_mark (); | |
4088 | ||
edb3359d DJ |
4089 | /* Need to select the frame, with all that implies so that |
4090 | the conditions will have the right context. Because we | |
4091 | use the frame, we will not see an inlined function's | |
4092 | variables when we arrive at a breakpoint at the start | |
4093 | of the inlined function; the current frame will be the | |
4094 | call site. */ | |
60e1c644 PA |
4095 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4096 | select_frame (get_current_frame ()); | |
4097 | else | |
4098 | { | |
4099 | struct frame_info *frame; | |
4100 | ||
4101 | /* For local watchpoint expressions, which particular | |
4102 | instance of a local is being watched matters, so we | |
4103 | keep track of the frame to evaluate the expression | |
4104 | in. To evaluate the condition however, it doesn't | |
4105 | really matter which instantiation of the function | |
4106 | where the condition makes sense triggers the | |
4107 | watchpoint. This allows an expression like "watch | |
4108 | global if q > 10" set in `func', catch writes to | |
4109 | global on all threads that call `func', or catch | |
4110 | writes on all recursive calls of `func' by a single | |
4111 | thread. We simply always evaluate the condition in | |
4112 | the innermost frame that's executing where it makes | |
4113 | sense to evaluate the condition. It seems | |
4114 | intuitive. */ | |
4115 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4116 | if (frame != NULL) | |
4117 | select_frame (frame); | |
4118 | else | |
4119 | within_current_scope = 0; | |
4120 | } | |
4121 | if (within_current_scope) | |
4122 | value_is_zero | |
4123 | = catch_errors (breakpoint_cond_eval, cond, | |
4124 | "Error in testing breakpoint condition:\n", | |
4125 | RETURN_MASK_ALL); | |
4126 | else | |
4127 | { | |
4128 | warning (_("Watchpoint condition cannot be tested " | |
4129 | "in the current scope")); | |
4130 | /* If we failed to set the right context for this | |
4131 | watchpoint, unconditionally report it. */ | |
4132 | value_is_zero = 0; | |
4133 | } | |
4a64f543 | 4134 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4135 | value_free_to_mark (mark); |
18a18393 | 4136 | } |
60e1c644 PA |
4137 | |
4138 | if (cond && value_is_zero) | |
18a18393 VP |
4139 | { |
4140 | bs->stop = 0; | |
4141 | } | |
4142 | else if (b->thread != -1 && b->thread != thread_id) | |
4143 | { | |
4144 | bs->stop = 0; | |
4145 | } | |
4146 | else if (b->ignore_count > 0) | |
4147 | { | |
4148 | b->ignore_count--; | |
4149 | annotate_ignore_count_change (); | |
4150 | bs->stop = 0; | |
4a64f543 | 4151 | /* Increase the hit count even though we don't stop. */ |
18a18393 VP |
4152 | ++(b->hit_count); |
4153 | } | |
4154 | } | |
4155 | } | |
4156 | ||
4157 | ||
9709f61c | 4158 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4159 | BP_ADDR in thread PTID. |
c906108c | 4160 | |
d983da9c | 4161 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4162 | don't understand this stop. Result is a chain of bpstat's such |
4163 | that: | |
c906108c | 4164 | |
c5aa993b | 4165 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4166 | |
c5aa993b | 4167 | if we understand why we stopped, the result is not null. |
c906108c | 4168 | |
c5aa993b JM |
4169 | Each element of the chain refers to a particular breakpoint or |
4170 | watchpoint at which we have stopped. (We may have stopped for | |
4171 | several reasons concurrently.) | |
c906108c | 4172 | |
c5aa993b JM |
4173 | Each element of the chain has valid next, breakpoint_at, |
4174 | commands, FIXME??? fields. */ | |
c906108c SS |
4175 | |
4176 | bpstat | |
6c95b8df PA |
4177 | bpstat_stop_status (struct address_space *aspace, |
4178 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4179 | { |
0d381245 | 4180 | struct breakpoint *b = NULL; |
afe38095 | 4181 | struct bp_location *bl; |
20874c92 | 4182 | struct bp_location *loc; |
5760d0ab JK |
4183 | /* First item of allocated bpstat's. */ |
4184 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4185 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4186 | bpstat bs; |
20874c92 | 4187 | int ix; |
429374b8 | 4188 | int need_remove_insert; |
f431efe5 | 4189 | int removed_any; |
c906108c | 4190 | |
f431efe5 PA |
4191 | /* First, build the bpstat chain with locations that explain a |
4192 | target stop, while being careful to not set the target running, | |
4193 | as that may invalidate locations (in particular watchpoint | |
4194 | locations are recreated). Resuming will happen here with | |
4195 | breakpoint conditions or watchpoint expressions that include | |
4196 | inferior function calls. */ | |
c5aa993b | 4197 | |
429374b8 JK |
4198 | ALL_BREAKPOINTS (b) |
4199 | { | |
4200 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4201 | continue; | |
a5606eee | 4202 | |
429374b8 JK |
4203 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4204 | { | |
4a64f543 MS |
4205 | /* For hardware watchpoints, we look only at the first |
4206 | location. The watchpoint_check function will work on the | |
4207 | entire expression, not the individual locations. For | |
4208 | read watchpoints, the watchpoints_triggered function has | |
4209 | checked all locations already. */ | |
429374b8 JK |
4210 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4211 | break; | |
18a18393 | 4212 | |
429374b8 JK |
4213 | if (bl->shlib_disabled) |
4214 | continue; | |
c5aa993b | 4215 | |
429374b8 JK |
4216 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4217 | continue; | |
c5aa993b | 4218 | |
4a64f543 MS |
4219 | /* Come here if it's a watchpoint, or if the break address |
4220 | matches. */ | |
c5aa993b | 4221 | |
4a64f543 MS |
4222 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4223 | explain stop. */ | |
c5aa993b | 4224 | |
f431efe5 PA |
4225 | /* Assume we stop. Should we find a watchpoint that is not |
4226 | actually triggered, or if the condition of the breakpoint | |
4227 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4228 | bs->stop = 1; |
4229 | bs->print = 1; | |
d983da9c | 4230 | |
f431efe5 PA |
4231 | /* If this is a scope breakpoint, mark the associated |
4232 | watchpoint as triggered so that we will handle the | |
4233 | out-of-scope event. We'll get to the watchpoint next | |
4234 | iteration. */ | |
4235 | if (b->type == bp_watchpoint_scope) | |
4236 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
4237 | } | |
4238 | } | |
4239 | ||
4240 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4241 | { | |
4242 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, | |
4243 | aspace, bp_addr)) | |
4244 | { | |
5760d0ab | 4245 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4246 | /* For hits of moribund locations, we should just proceed. */ |
4247 | bs->stop = 0; | |
4248 | bs->print = 0; | |
4249 | bs->print_it = print_it_noop; | |
4250 | } | |
4251 | } | |
4252 | ||
f431efe5 PA |
4253 | /* Now go through the locations that caused the target to stop, and |
4254 | check whether we're interested in reporting this stop to higher | |
4255 | layers, or whether we should resume the target transparently. */ | |
4256 | ||
4257 | removed_any = 0; | |
4258 | ||
5760d0ab | 4259 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4260 | { |
4261 | if (!bs->stop) | |
4262 | continue; | |
4263 | ||
4264 | bpstat_check_watchpoint (bs); | |
4265 | if (!bs->stop) | |
4266 | continue; | |
4267 | ||
4268 | b = bs->breakpoint_at; | |
18a18393 | 4269 | |
429374b8 | 4270 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4271 | || b->type == bp_longjmp_master |
186c406b TT |
4272 | || b->type == bp_std_terminate_master |
4273 | || b->type == bp_exception_master) | |
429374b8 JK |
4274 | /* We do not stop for these. */ |
4275 | bs->stop = 0; | |
4276 | else | |
4277 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4278 | |
429374b8 JK |
4279 | if (bs->stop) |
4280 | { | |
4281 | ++(b->hit_count); | |
c906108c | 4282 | |
4a64f543 | 4283 | /* We will stop here. */ |
429374b8 JK |
4284 | if (b->disposition == disp_disable) |
4285 | { | |
4286 | if (b->enable_state != bp_permanent) | |
4287 | b->enable_state = bp_disabled; | |
f431efe5 | 4288 | removed_any = 1; |
429374b8 JK |
4289 | } |
4290 | if (b->silent) | |
4291 | bs->print = 0; | |
4292 | bs->commands = b->commands; | |
9add0f1b TT |
4293 | incref_counted_command_line (bs->commands); |
4294 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4295 | if (bs->commands_left | |
4296 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4297 | || (xdb_commands | |
4298 | && strcmp ("Q", | |
4299 | bs->commands_left->line) == 0))) | |
429374b8 | 4300 | { |
9add0f1b | 4301 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4302 | bs->print = 0; |
4303 | } | |
429374b8 JK |
4304 | } |
4305 | ||
4306 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4307 | if (bs->stop == 0 || bs->print == 0) | |
4308 | bs->print_it = print_it_noop; | |
429374b8 | 4309 | } |
876fa593 | 4310 | |
d983da9c DJ |
4311 | /* If we aren't stopping, the value of some hardware watchpoint may |
4312 | not have changed, but the intermediate memory locations we are | |
4313 | watching may have. Don't bother if we're stopping; this will get | |
4314 | done later. */ | |
d832cb68 | 4315 | need_remove_insert = 0; |
5760d0ab JK |
4316 | if (! bpstat_causes_stop (bs_head)) |
4317 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4318 | if (!bs->stop |
f431efe5 PA |
4319 | && bs->breakpoint_at |
4320 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4321 | { |
4a64f543 | 4322 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4323 | need_remove_insert = 1; |
d983da9c DJ |
4324 | } |
4325 | ||
d832cb68 | 4326 | if (need_remove_insert) |
2d134ed3 | 4327 | update_global_location_list (1); |
f431efe5 PA |
4328 | else if (removed_any) |
4329 | update_global_location_list (0); | |
d832cb68 | 4330 | |
5760d0ab | 4331 | return bs_head; |
c906108c | 4332 | } |
628fe4e4 JK |
4333 | |
4334 | static void | |
4335 | handle_jit_event (void) | |
4336 | { | |
4337 | struct frame_info *frame; | |
4338 | struct gdbarch *gdbarch; | |
4339 | ||
4340 | /* Switch terminal for any messages produced by | |
4341 | breakpoint_re_set. */ | |
4342 | target_terminal_ours_for_output (); | |
4343 | ||
4344 | frame = get_current_frame (); | |
4345 | gdbarch = get_frame_arch (frame); | |
4346 | ||
4347 | jit_event_handler (gdbarch); | |
4348 | ||
4349 | target_terminal_inferior (); | |
4350 | } | |
4351 | ||
4352 | /* Prepare WHAT final decision for infrun. */ | |
4353 | ||
4354 | /* Decide what infrun needs to do with this bpstat. */ | |
4355 | ||
c906108c | 4356 | struct bpstat_what |
fba45db2 | 4357 | bpstat_what (bpstat bs) |
c906108c | 4358 | { |
c906108c | 4359 | struct bpstat_what retval; |
628fe4e4 JK |
4360 | /* We need to defer calling `solib_add', as adding new symbols |
4361 | resets breakpoints, which in turn deletes breakpoint locations, | |
4362 | and hence may clear unprocessed entries in the BS chain. */ | |
4363 | int shlib_event = 0; | |
4364 | int jit_event = 0; | |
c906108c | 4365 | |
628fe4e4 | 4366 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4367 | retval.call_dummy = STOP_NONE; |
186c406b | 4368 | retval.is_longjmp = 0; |
628fe4e4 | 4369 | |
c906108c SS |
4370 | for (; bs != NULL; bs = bs->next) |
4371 | { | |
628fe4e4 JK |
4372 | /* Extract this BS's action. After processing each BS, we check |
4373 | if its action overrides all we've seem so far. */ | |
4374 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4375 | enum bptype bptype; | |
4376 | ||
c906108c | 4377 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4378 | { |
4379 | /* I suspect this can happen if it was a momentary | |
4380 | breakpoint which has since been deleted. */ | |
4381 | bptype = bp_none; | |
4382 | } | |
f431efe5 | 4383 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4384 | bptype = bp_none; |
20874c92 | 4385 | else |
f431efe5 | 4386 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4387 | |
4388 | switch (bptype) | |
c906108c SS |
4389 | { |
4390 | case bp_none: | |
628fe4e4 | 4391 | break; |
c906108c SS |
4392 | case bp_breakpoint: |
4393 | case bp_hardware_breakpoint: | |
4394 | case bp_until: | |
4395 | case bp_finish: | |
4396 | if (bs->stop) | |
4397 | { | |
4398 | if (bs->print) | |
628fe4e4 | 4399 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4400 | else |
628fe4e4 | 4401 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4402 | } |
4403 | else | |
628fe4e4 | 4404 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4405 | break; |
4406 | case bp_watchpoint: | |
4407 | case bp_hardware_watchpoint: | |
4408 | case bp_read_watchpoint: | |
4409 | case bp_access_watchpoint: | |
4410 | if (bs->stop) | |
4411 | { | |
4412 | if (bs->print) | |
628fe4e4 | 4413 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4414 | else |
628fe4e4 | 4415 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4416 | } |
4417 | else | |
628fe4e4 JK |
4418 | { |
4419 | /* There was a watchpoint, but we're not stopping. | |
4420 | This requires no further action. */ | |
4421 | } | |
c906108c SS |
4422 | break; |
4423 | case bp_longjmp: | |
186c406b | 4424 | case bp_exception: |
628fe4e4 | 4425 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4426 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4427 | break; |
4428 | case bp_longjmp_resume: | |
186c406b | 4429 | case bp_exception_resume: |
628fe4e4 | 4430 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4431 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4432 | break; |
4433 | case bp_step_resume: | |
4434 | if (bs->stop) | |
628fe4e4 JK |
4435 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4436 | else | |
c906108c | 4437 | { |
628fe4e4 JK |
4438 | /* It is for the wrong frame. */ |
4439 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4440 | } |
c906108c | 4441 | break; |
c906108c | 4442 | case bp_watchpoint_scope: |
c4093a6a | 4443 | case bp_thread_event: |
1900040c | 4444 | case bp_overlay_event: |
0fd8e87f | 4445 | case bp_longjmp_master: |
aa7d318d | 4446 | case bp_std_terminate_master: |
186c406b | 4447 | case bp_exception_master: |
628fe4e4 | 4448 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4449 | break; |
ce78b96d | 4450 | case bp_catchpoint: |
c5aa993b JM |
4451 | if (bs->stop) |
4452 | { | |
4453 | if (bs->print) | |
628fe4e4 | 4454 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4455 | else |
628fe4e4 | 4456 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4457 | } |
4458 | else | |
628fe4e4 JK |
4459 | { |
4460 | /* There was a catchpoint, but we're not stopping. | |
4461 | This requires no further action. */ | |
4462 | } | |
4463 | break; | |
4464 | case bp_shlib_event: | |
4465 | shlib_event = 1; | |
4466 | ||
4467 | /* If requested, stop when the dynamic linker notifies GDB | |
4468 | of events. This allows the user to get control and place | |
4469 | breakpoints in initializer routines for dynamically | |
4470 | loaded objects (among other things). */ | |
4471 | if (stop_on_solib_events) | |
4472 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4473 | else | |
4474 | this_action = BPSTAT_WHAT_SINGLE; | |
4475 | break; | |
4476 | case bp_jit_event: | |
4477 | jit_event = 1; | |
4478 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4479 | break; |
c906108c | 4480 | case bp_call_dummy: |
53a5351d JM |
4481 | /* Make sure the action is stop (silent or noisy), |
4482 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4483 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4484 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4485 | break; |
4486 | case bp_std_terminate: | |
4487 | /* Make sure the action is stop (silent or noisy), | |
4488 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4489 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4490 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4491 | break; |
1042e4c0 | 4492 | case bp_tracepoint: |
7a697b8d | 4493 | case bp_fast_tracepoint: |
0fb4aa4b | 4494 | case bp_static_tracepoint: |
1042e4c0 SS |
4495 | /* Tracepoint hits should not be reported back to GDB, and |
4496 | if one got through somehow, it should have been filtered | |
4497 | out already. */ | |
4498 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4499 | _("bpstat_what: tracepoint encountered")); |
628fe4e4 JK |
4500 | default: |
4501 | internal_error (__FILE__, __LINE__, | |
4502 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4503 | } |
628fe4e4 JK |
4504 | |
4505 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4506 | } |
628fe4e4 JK |
4507 | |
4508 | if (shlib_event) | |
4509 | { | |
4510 | if (debug_infrun) | |
4511 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4512 | ||
4513 | /* Check for any newly added shared libraries if we're supposed | |
4514 | to be adding them automatically. */ | |
4515 | ||
4516 | /* Switch terminal for any messages produced by | |
4517 | breakpoint_re_set. */ | |
4518 | target_terminal_ours_for_output (); | |
4519 | ||
4520 | #ifdef SOLIB_ADD | |
4521 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4522 | #else | |
4523 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4524 | #endif | |
4525 | ||
4526 | target_terminal_inferior (); | |
4527 | } | |
4528 | ||
4529 | if (jit_event) | |
4530 | { | |
4531 | if (debug_infrun) | |
4532 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4533 | ||
4534 | handle_jit_event (); | |
4535 | } | |
4536 | ||
c906108c SS |
4537 | return retval; |
4538 | } | |
4539 | ||
4540 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4541 | without hardware support). This isn't related to a specific bpstat, | |
4542 | just to things like whether watchpoints are set. */ | |
4543 | ||
c5aa993b | 4544 | int |
fba45db2 | 4545 | bpstat_should_step (void) |
c906108c SS |
4546 | { |
4547 | struct breakpoint *b; | |
cc59ec59 | 4548 | |
c906108c | 4549 | ALL_BREAKPOINTS (b) |
717a8278 | 4550 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4551 | return 1; |
c906108c SS |
4552 | return 0; |
4553 | } | |
4554 | ||
67822962 PA |
4555 | int |
4556 | bpstat_causes_stop (bpstat bs) | |
4557 | { | |
4558 | for (; bs != NULL; bs = bs->next) | |
4559 | if (bs->stop) | |
4560 | return 1; | |
4561 | ||
4562 | return 0; | |
4563 | } | |
4564 | ||
c906108c | 4565 | \f |
c5aa993b | 4566 | |
170b53b2 UW |
4567 | /* Compute a string of spaces suitable to indent the next line |
4568 | so it starts at the position corresponding to the table column | |
4569 | named COL_NAME in the currently active table of UIOUT. */ | |
4570 | ||
4571 | static char * | |
4572 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4573 | { | |
4574 | static char wrap_indent[80]; | |
4575 | int i, total_width, width, align; | |
4576 | char *text; | |
4577 | ||
4578 | total_width = 0; | |
4579 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4580 | { | |
4581 | if (strcmp (text, col_name) == 0) | |
4582 | { | |
4583 | gdb_assert (total_width < sizeof wrap_indent); | |
4584 | memset (wrap_indent, ' ', total_width); | |
4585 | wrap_indent[total_width] = 0; | |
4586 | ||
4587 | return wrap_indent; | |
4588 | } | |
4589 | ||
4590 | total_width += width + 1; | |
4591 | } | |
4592 | ||
4593 | return NULL; | |
4594 | } | |
4595 | ||
859825b8 JK |
4596 | /* Print the LOC location out of the list of B->LOC locations. */ |
4597 | ||
170b53b2 UW |
4598 | static void |
4599 | print_breakpoint_location (struct breakpoint *b, | |
4600 | struct bp_location *loc) | |
0d381245 | 4601 | { |
6c95b8df PA |
4602 | struct cleanup *old_chain = save_current_program_space (); |
4603 | ||
859825b8 JK |
4604 | if (loc != NULL && loc->shlib_disabled) |
4605 | loc = NULL; | |
4606 | ||
6c95b8df PA |
4607 | if (loc != NULL) |
4608 | set_current_program_space (loc->pspace); | |
4609 | ||
859825b8 | 4610 | if (b->source_file && loc) |
0d381245 VP |
4611 | { |
4612 | struct symbol *sym | |
4613 | = find_pc_sect_function (loc->address, loc->section); | |
4614 | if (sym) | |
4615 | { | |
4616 | ui_out_text (uiout, "in "); | |
4617 | ui_out_field_string (uiout, "func", | |
4618 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4619 | ui_out_text (uiout, " "); |
4620 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4621 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4622 | } |
4623 | ui_out_field_string (uiout, "file", b->source_file); | |
4624 | ui_out_text (uiout, ":"); | |
4625 | ||
4626 | if (ui_out_is_mi_like_p (uiout)) | |
4627 | { | |
4628 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4629 | char *fullname = symtab_to_fullname (sal.symtab); | |
4630 | ||
4631 | if (fullname) | |
4632 | ui_out_field_string (uiout, "fullname", fullname); | |
4633 | } | |
4634 | ||
4635 | ui_out_field_int (uiout, "line", b->line_number); | |
4636 | } | |
859825b8 | 4637 | else if (loc) |
0d381245 | 4638 | { |
170b53b2 UW |
4639 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4640 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4641 | ||
22e722e1 DJ |
4642 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4643 | demangle, ""); | |
0d381245 | 4644 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4645 | |
4646 | do_cleanups (stb_chain); | |
0d381245 | 4647 | } |
859825b8 JK |
4648 | else |
4649 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4650 | |
4651 | do_cleanups (old_chain); | |
0d381245 VP |
4652 | } |
4653 | ||
269b11a2 PA |
4654 | static const char * |
4655 | bptype_string (enum bptype type) | |
c906108c | 4656 | { |
c4093a6a JM |
4657 | struct ep_type_description |
4658 | { | |
4659 | enum bptype type; | |
4660 | char *description; | |
4661 | }; | |
4662 | static struct ep_type_description bptypes[] = | |
c906108c | 4663 | { |
c5aa993b JM |
4664 | {bp_none, "?deleted?"}, |
4665 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4666 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4667 | {bp_until, "until"}, |
4668 | {bp_finish, "finish"}, | |
4669 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4670 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4671 | {bp_read_watchpoint, "read watchpoint"}, |
4672 | {bp_access_watchpoint, "acc watchpoint"}, | |
4673 | {bp_longjmp, "longjmp"}, | |
4674 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4675 | {bp_exception, "exception"}, |
4676 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4677 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4678 | {bp_watchpoint_scope, "watchpoint scope"}, |
4679 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4680 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4681 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4682 | {bp_thread_event, "thread events"}, |
1900040c | 4683 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4684 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4685 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4686 | {bp_exception_master, "exception master"}, |
ce78b96d | 4687 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4688 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4689 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4690 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4691 | {bp_jit_event, "jit events"}, |
c5aa993b | 4692 | }; |
269b11a2 PA |
4693 | |
4694 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4695 | || ((int) type != bptypes[(int) type].type)) | |
4696 | internal_error (__FILE__, __LINE__, | |
4697 | _("bptypes table does not describe type #%d."), | |
4698 | (int) type); | |
4699 | ||
4700 | return bptypes[(int) type].description; | |
4701 | } | |
4702 | ||
4703 | /* Print B to gdb_stdout. */ | |
4704 | ||
4705 | static void | |
4706 | print_one_breakpoint_location (struct breakpoint *b, | |
4707 | struct bp_location *loc, | |
4708 | int loc_number, | |
4709 | struct bp_location **last_loc, | |
269b11a2 PA |
4710 | int allflag) |
4711 | { | |
4712 | struct command_line *l; | |
c2c6d25f | 4713 | static char bpenables[] = "nynny"; |
3b31d625 | 4714 | struct cleanup *bkpt_chain; |
c906108c | 4715 | |
0d381245 VP |
4716 | int header_of_multiple = 0; |
4717 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4718 | struct value_print_options opts; |
4719 | ||
4720 | get_user_print_options (&opts); | |
0d381245 VP |
4721 | |
4722 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4723 | /* See comment in print_one_breakpoint concerning treatment of |
4724 | breakpoints with single disabled location. */ | |
0d381245 VP |
4725 | if (loc == NULL |
4726 | && (b->loc != NULL | |
4727 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4728 | header_of_multiple = 1; | |
4729 | if (loc == NULL) | |
4730 | loc = b->loc; | |
4731 | ||
c4093a6a | 4732 | annotate_record (); |
3b31d625 | 4733 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4734 | |
4735 | /* 1 */ | |
4736 | annotate_field (0); | |
0d381245 VP |
4737 | if (part_of_multiple) |
4738 | { | |
4739 | char *formatted; | |
0c6773c1 | 4740 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4741 | ui_out_field_string (uiout, "number", formatted); |
4742 | xfree (formatted); | |
4743 | } | |
4744 | else | |
4745 | { | |
4746 | ui_out_field_int (uiout, "number", b->number); | |
4747 | } | |
c4093a6a JM |
4748 | |
4749 | /* 2 */ | |
4750 | annotate_field (1); | |
0d381245 VP |
4751 | if (part_of_multiple) |
4752 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4753 | else |
4754 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4755 | |
4756 | /* 3 */ | |
4757 | annotate_field (2); | |
0d381245 VP |
4758 | if (part_of_multiple) |
4759 | ui_out_field_skip (uiout, "disp"); | |
4760 | else | |
2cec12e5 | 4761 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4762 | |
c4093a6a JM |
4763 | |
4764 | /* 4 */ | |
4765 | annotate_field (3); | |
0d381245 | 4766 | if (part_of_multiple) |
54e52265 | 4767 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4768 | else |
4a64f543 MS |
4769 | ui_out_field_fmt (uiout, "enabled", "%c", |
4770 | bpenables[(int) b->enable_state]); | |
54e52265 | 4771 | ui_out_spaces (uiout, 2); |
0d381245 | 4772 | |
c4093a6a JM |
4773 | |
4774 | /* 5 and 6 */ | |
3086aeae | 4775 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4776 | { |
4a64f543 MS |
4777 | /* Although the print_one can possibly print all locations, |
4778 | calling it here is not likely to get any nice result. So, | |
4779 | make sure there's just one location. */ | |
0d381245 | 4780 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4781 | b->ops->print_one (b, last_loc); |
0d381245 | 4782 | } |
3086aeae DJ |
4783 | else |
4784 | switch (b->type) | |
4785 | { | |
4786 | case bp_none: | |
4787 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4788 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4789 | break; |
c906108c | 4790 | |
3086aeae DJ |
4791 | case bp_watchpoint: |
4792 | case bp_hardware_watchpoint: | |
4793 | case bp_read_watchpoint: | |
4794 | case bp_access_watchpoint: | |
4795 | /* Field 4, the address, is omitted (which makes the columns | |
4796 | not line up too nicely with the headers, but the effect | |
4797 | is relatively readable). */ | |
79a45b7d | 4798 | if (opts.addressprint) |
3086aeae DJ |
4799 | ui_out_field_skip (uiout, "addr"); |
4800 | annotate_field (5); | |
fa8a61dc | 4801 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4802 | break; |
4803 | ||
3086aeae DJ |
4804 | case bp_breakpoint: |
4805 | case bp_hardware_breakpoint: | |
4806 | case bp_until: | |
4807 | case bp_finish: | |
4808 | case bp_longjmp: | |
4809 | case bp_longjmp_resume: | |
186c406b TT |
4810 | case bp_exception: |
4811 | case bp_exception_resume: | |
3086aeae | 4812 | case bp_step_resume: |
3086aeae DJ |
4813 | case bp_watchpoint_scope: |
4814 | case bp_call_dummy: | |
aa7d318d | 4815 | case bp_std_terminate: |
3086aeae DJ |
4816 | case bp_shlib_event: |
4817 | case bp_thread_event: | |
4818 | case bp_overlay_event: | |
0fd8e87f | 4819 | case bp_longjmp_master: |
aa7d318d | 4820 | case bp_std_terminate_master: |
186c406b | 4821 | case bp_exception_master: |
1042e4c0 | 4822 | case bp_tracepoint: |
7a697b8d | 4823 | case bp_fast_tracepoint: |
0fb4aa4b | 4824 | case bp_static_tracepoint: |
4efc6507 | 4825 | case bp_jit_event: |
79a45b7d | 4826 | if (opts.addressprint) |
3086aeae DJ |
4827 | { |
4828 | annotate_field (4); | |
54e52265 | 4829 | if (header_of_multiple) |
0d381245 | 4830 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4831 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4832 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4833 | else |
5af949e3 UW |
4834 | ui_out_field_core_addr (uiout, "addr", |
4835 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4836 | } |
4837 | annotate_field (5); | |
0d381245 | 4838 | if (!header_of_multiple) |
170b53b2 | 4839 | print_breakpoint_location (b, loc); |
0d381245 | 4840 | if (b->loc) |
a6d9a66e | 4841 | *last_loc = b->loc; |
3086aeae DJ |
4842 | break; |
4843 | } | |
c906108c | 4844 | |
6c95b8df PA |
4845 | |
4846 | /* For backward compatibility, don't display inferiors unless there | |
4847 | are several. */ | |
4848 | if (loc != NULL | |
4849 | && !header_of_multiple | |
4850 | && (allflag | |
4851 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4852 | && (number_of_program_spaces () > 1 | |
4853 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4854 | /* LOC is for existing B, it cannot be in |
4855 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4856 | && loc->owner->type != bp_catchpoint))) |
4857 | { | |
4858 | struct inferior *inf; | |
4859 | int first = 1; | |
4860 | ||
4861 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4862 | { | |
4863 | if (inf->pspace == loc->pspace) | |
4864 | { | |
4865 | if (first) | |
4866 | { | |
4867 | first = 0; | |
4868 | ui_out_text (uiout, " inf "); | |
4869 | } | |
4870 | else | |
4871 | ui_out_text (uiout, ", "); | |
4872 | ui_out_text (uiout, plongest (inf->num)); | |
4873 | } | |
4874 | } | |
4875 | } | |
4876 | ||
4a306c9a | 4877 | if (!part_of_multiple) |
c4093a6a | 4878 | { |
4a306c9a JB |
4879 | if (b->thread != -1) |
4880 | { | |
4881 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4882 | "stop only in" line a little further down. */ |
4a306c9a JB |
4883 | ui_out_text (uiout, " thread "); |
4884 | ui_out_field_int (uiout, "thread", b->thread); | |
4885 | } | |
4886 | else if (b->task != 0) | |
4887 | { | |
4888 | ui_out_text (uiout, " task "); | |
4889 | ui_out_field_int (uiout, "task", b->task); | |
4890 | } | |
c4093a6a JM |
4891 | } |
4892 | ||
8b93c638 | 4893 | ui_out_text (uiout, "\n"); |
c4093a6a | 4894 | |
0fb4aa4b PA |
4895 | if (!part_of_multiple && b->static_trace_marker_id) |
4896 | { | |
4897 | gdb_assert (b->type == bp_static_tracepoint); | |
4898 | ||
4899 | ui_out_text (uiout, "\tmarker id is "); | |
4900 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4901 | b->static_trace_marker_id); | |
4902 | ui_out_text (uiout, "\n"); | |
4903 | } | |
4904 | ||
0d381245 | 4905 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4906 | { |
4907 | annotate_field (6); | |
8b93c638 | 4908 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4909 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4910 | the frame ID. */ | |
5af949e3 UW |
4911 | ui_out_field_core_addr (uiout, "frame", |
4912 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4913 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4914 | } |
4915 | ||
0d381245 | 4916 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4917 | { |
f7f9143b JB |
4918 | /* We do not print the condition for Ada exception catchpoints |
4919 | because the condition is an internal implementation detail | |
4920 | that we do not want to expose to the user. */ | |
c4093a6a | 4921 | annotate_field (7); |
d77f58be | 4922 | if (is_tracepoint (b)) |
1042e4c0 SS |
4923 | ui_out_text (uiout, "\ttrace only if "); |
4924 | else | |
4925 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4926 | ui_out_field_string (uiout, "cond", b->cond_string); |
4927 | ui_out_text (uiout, "\n"); | |
4928 | } | |
4929 | ||
0d381245 | 4930 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4931 | { |
4a64f543 | 4932 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4933 | ui_out_text (uiout, "\tstop only in thread "); |
4934 | ui_out_field_int (uiout, "thread", b->thread); | |
4935 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4936 | } |
4937 | ||
63c715c6 | 4938 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4939 | { |
4a64f543 | 4940 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4941 | if (ep_is_catchpoint (b)) |
4942 | ui_out_text (uiout, "\tcatchpoint"); | |
4943 | else | |
4944 | ui_out_text (uiout, "\tbreakpoint"); | |
4945 | ui_out_text (uiout, " already hit "); | |
4946 | ui_out_field_int (uiout, "times", b->hit_count); | |
4947 | if (b->hit_count == 1) | |
4948 | ui_out_text (uiout, " time\n"); | |
4949 | else | |
4950 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4951 | } |
4952 | ||
4a64f543 MS |
4953 | /* Output the count also if it is zero, but only if this is mi. |
4954 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4955 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4956 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4957 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4958 | |
0d381245 | 4959 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4960 | { |
4961 | annotate_field (8); | |
8b93c638 JM |
4962 | ui_out_text (uiout, "\tignore next "); |
4963 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4964 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4965 | } |
059fb39f | 4966 | |
9add0f1b | 4967 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4968 | if (!part_of_multiple && l) |
c4093a6a | 4969 | { |
3b31d625 EZ |
4970 | struct cleanup *script_chain; |
4971 | ||
c4093a6a | 4972 | annotate_field (9); |
3b31d625 | 4973 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4974 | print_command_lines (uiout, l, 4); |
3b31d625 | 4975 | do_cleanups (script_chain); |
c4093a6a | 4976 | } |
d24317b4 | 4977 | |
1042e4c0 SS |
4978 | if (!part_of_multiple && b->pass_count) |
4979 | { | |
4980 | annotate_field (10); | |
4981 | ui_out_text (uiout, "\tpass count "); | |
4982 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4983 | ui_out_text (uiout, " \n"); | |
4984 | } | |
4985 | ||
d24317b4 VP |
4986 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4987 | { | |
4988 | if (b->addr_string) | |
4989 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4990 | else if (b->exp_string) | |
4991 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4992 | } | |
4993 | ||
3b31d625 | 4994 | do_cleanups (bkpt_chain); |
c4093a6a | 4995 | } |
c5aa993b | 4996 | |
0d381245 VP |
4997 | static void |
4998 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 4999 | struct bp_location **last_loc, |
6c95b8df | 5000 | int allflag) |
0d381245 | 5001 | { |
12c5a436 | 5002 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
0d381245 VP |
5003 | |
5004 | /* If this breakpoint has custom print function, | |
5005 | it's already printed. Otherwise, print individual | |
5006 | locations, if any. */ | |
5007 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5008 | { | |
4a64f543 MS |
5009 | /* If breakpoint has a single location that is disabled, we |
5010 | print it as if it had several locations, since otherwise it's | |
5011 | hard to represent "breakpoint enabled, location disabled" | |
5012 | situation. | |
5013 | ||
5014 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5015 | internally, that's not a property exposed to user. */ |
0d381245 | 5016 | if (b->loc |
a5606eee | 5017 | && !is_hardware_watchpoint (b) |
0d381245 | 5018 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 5019 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
5020 | { |
5021 | struct bp_location *loc; | |
5022 | int n = 1; | |
5023 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
12c5a436 | 5024 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
0d381245 VP |
5025 | } |
5026 | } | |
5027 | } | |
5028 | ||
a6d9a66e UW |
5029 | static int |
5030 | breakpoint_address_bits (struct breakpoint *b) | |
5031 | { | |
5032 | int print_address_bits = 0; | |
5033 | struct bp_location *loc; | |
5034 | ||
5035 | for (loc = b->loc; loc; loc = loc->next) | |
5036 | { | |
c7437ca6 PA |
5037 | int addr_bit; |
5038 | ||
5039 | /* Software watchpoints that aren't watching memory don't have | |
5040 | an address to print. */ | |
5041 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5042 | continue; | |
5043 | ||
5044 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5045 | if (addr_bit > print_address_bits) |
5046 | print_address_bits = addr_bit; | |
5047 | } | |
5048 | ||
5049 | return print_address_bits; | |
5050 | } | |
0d381245 | 5051 | |
c4093a6a JM |
5052 | struct captured_breakpoint_query_args |
5053 | { | |
5054 | int bnum; | |
5055 | }; | |
c5aa993b | 5056 | |
c4093a6a | 5057 | static int |
2b65245e | 5058 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5059 | { |
5060 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5061 | struct breakpoint *b; |
a6d9a66e | 5062 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5063 | |
c4093a6a JM |
5064 | ALL_BREAKPOINTS (b) |
5065 | { | |
5066 | if (args->bnum == b->number) | |
c5aa993b | 5067 | { |
12c5a436 | 5068 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5069 | return GDB_RC_OK; |
c5aa993b | 5070 | } |
c4093a6a JM |
5071 | } |
5072 | return GDB_RC_NONE; | |
5073 | } | |
c5aa993b | 5074 | |
c4093a6a | 5075 | enum gdb_rc |
4a64f543 MS |
5076 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5077 | char **error_message) | |
c4093a6a JM |
5078 | { |
5079 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5080 | |
c4093a6a JM |
5081 | args.bnum = bnum; |
5082 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5083 | an error. */ |
b0b13bb4 DJ |
5084 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5085 | error_message, RETURN_MASK_ALL) < 0) | |
5086 | return GDB_RC_FAIL; | |
5087 | else | |
5088 | return GDB_RC_OK; | |
c4093a6a | 5089 | } |
c5aa993b | 5090 | |
7f3b0473 | 5091 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4a64f543 | 5092 | catchpoints, et.al.). */ |
7f3b0473 AC |
5093 | |
5094 | static int | |
5095 | user_settable_breakpoint (const struct breakpoint *b) | |
5096 | { | |
5097 | return (b->type == bp_breakpoint | |
ce78b96d | 5098 | || b->type == bp_catchpoint |
7f3b0473 | 5099 | || b->type == bp_hardware_breakpoint |
d77f58be | 5100 | || is_tracepoint (b) |
cc60f2e3 | 5101 | || is_watchpoint (b)); |
7f3b0473 | 5102 | } |
4a64f543 | 5103 | |
09d682a4 TT |
5104 | /* Return true if this breakpoint was set by the user, false if it is |
5105 | internal or momentary. */ | |
5106 | ||
5107 | int | |
5108 | user_breakpoint_p (struct breakpoint *b) | |
5109 | { | |
5110 | return user_settable_breakpoint (b) && b->number > 0; | |
5111 | } | |
5112 | ||
7f3b0473 | 5113 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5114 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5115 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5116 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5117 | ones for which it returns non-zero. Return the total number of | |
5118 | breakpoints listed. */ | |
c906108c | 5119 | |
d77f58be | 5120 | static int |
e5a67952 | 5121 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5122 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5123 | { |
52f0bd74 | 5124 | struct breakpoint *b; |
a6d9a66e | 5125 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5126 | int nr_printable_breakpoints; |
3b31d625 | 5127 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5128 | struct value_print_options opts; |
a6d9a66e | 5129 | int print_address_bits = 0; |
269b11a2 PA |
5130 | int print_type_col_width = 14; |
5131 | ||
79a45b7d TT |
5132 | get_user_print_options (&opts); |
5133 | ||
4a64f543 MS |
5134 | /* Compute the number of rows in the table, as well as the size |
5135 | required for address fields. */ | |
7f3b0473 AC |
5136 | nr_printable_breakpoints = 0; |
5137 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5138 | { |
5139 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5140 | if (filter && !filter (b)) | |
5141 | continue; | |
5142 | ||
5143 | /* If we have an "args" string, it is a list of breakpoints to | |
5144 | accept. Skip the others. */ | |
5145 | if (args != NULL && *args != '\0') | |
5146 | { | |
5147 | if (allflag && parse_and_eval_long (args) != b->number) | |
5148 | continue; | |
5149 | if (!allflag && !number_is_in_list (args, b->number)) | |
5150 | continue; | |
5151 | } | |
269b11a2 | 5152 | |
e5a67952 MS |
5153 | if (allflag || user_breakpoint_p (b)) |
5154 | { | |
5155 | int addr_bit, type_len; | |
a6d9a66e | 5156 | |
e5a67952 MS |
5157 | addr_bit = breakpoint_address_bits (b); |
5158 | if (addr_bit > print_address_bits) | |
5159 | print_address_bits = addr_bit; | |
269b11a2 | 5160 | |
e5a67952 MS |
5161 | type_len = strlen (bptype_string (b->type)); |
5162 | if (type_len > print_type_col_width) | |
5163 | print_type_col_width = type_len; | |
5164 | ||
5165 | nr_printable_breakpoints++; | |
5166 | } | |
5167 | } | |
7f3b0473 | 5168 | |
79a45b7d | 5169 | if (opts.addressprint) |
3b31d625 | 5170 | bkpttbl_chain |
3e43a32a MS |
5171 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5172 | nr_printable_breakpoints, | |
3b31d625 | 5173 | "BreakpointTable"); |
8b93c638 | 5174 | else |
3b31d625 | 5175 | bkpttbl_chain |
3e43a32a MS |
5176 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5177 | nr_printable_breakpoints, | |
3b31d625 | 5178 | "BreakpointTable"); |
8b93c638 | 5179 | |
7f3b0473 | 5180 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5181 | annotate_breakpoints_headers (); |
5182 | if (nr_printable_breakpoints > 0) | |
5183 | annotate_field (0); | |
4a64f543 | 5184 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5185 | if (nr_printable_breakpoints > 0) |
5186 | annotate_field (1); | |
269b11a2 | 5187 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5188 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5189 | if (nr_printable_breakpoints > 0) |
5190 | annotate_field (2); | |
4a64f543 | 5191 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5192 | if (nr_printable_breakpoints > 0) |
5193 | annotate_field (3); | |
54e52265 | 5194 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5195 | if (opts.addressprint) |
e5a67952 MS |
5196 | { |
5197 | if (nr_printable_breakpoints > 0) | |
5198 | annotate_field (4); | |
5199 | if (print_address_bits <= 32) | |
5200 | ui_out_table_header (uiout, 10, ui_left, | |
5201 | "addr", "Address"); /* 5 */ | |
5202 | else | |
5203 | ui_out_table_header (uiout, 18, ui_left, | |
5204 | "addr", "Address"); /* 5 */ | |
5205 | } | |
d7faa9e7 AC |
5206 | if (nr_printable_breakpoints > 0) |
5207 | annotate_field (5); | |
5208 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5209 | ui_out_table_body (uiout); | |
5210 | if (nr_printable_breakpoints > 0) | |
5211 | annotate_breakpoints_table (); | |
7f3b0473 | 5212 | |
c4093a6a | 5213 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5214 | { |
5215 | QUIT; | |
5216 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5217 | if (filter && !filter (b)) | |
5218 | continue; | |
5219 | ||
5220 | /* If we have an "args" string, it is a list of breakpoints to | |
5221 | accept. Skip the others. */ | |
5222 | ||
5223 | if (args != NULL && *args != '\0') | |
5224 | { | |
5225 | if (allflag) /* maintenance info breakpoint */ | |
5226 | { | |
5227 | if (parse_and_eval_long (args) != b->number) | |
5228 | continue; | |
5229 | } | |
5230 | else /* all others */ | |
5231 | { | |
5232 | if (!number_is_in_list (args, b->number)) | |
5233 | continue; | |
5234 | } | |
5235 | } | |
5236 | /* We only print out user settable breakpoints unless the | |
5237 | allflag is set. */ | |
5238 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5239 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5240 | } |
5241 | ||
3b31d625 | 5242 | do_cleanups (bkpttbl_chain); |
698384cd | 5243 | |
7f3b0473 | 5244 | if (nr_printable_breakpoints == 0) |
c906108c | 5245 | { |
4a64f543 MS |
5246 | /* If there's a filter, let the caller decide how to report |
5247 | empty list. */ | |
d77f58be SS |
5248 | if (!filter) |
5249 | { | |
e5a67952 | 5250 | if (args == NULL || *args == '\0') |
d77f58be SS |
5251 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5252 | else | |
4a64f543 | 5253 | ui_out_message (uiout, 0, |
e5a67952 MS |
5254 | "No breakpoint or watchpoint matching '%s'.\n", |
5255 | args); | |
d77f58be | 5256 | } |
c906108c SS |
5257 | } |
5258 | else | |
c4093a6a | 5259 | { |
a6d9a66e UW |
5260 | if (last_loc && !server_command) |
5261 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5262 | } |
c906108c | 5263 | |
4a64f543 | 5264 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5265 | there have been breakpoints? */ |
c906108c | 5266 | annotate_breakpoints_table_end (); |
d77f58be SS |
5267 | |
5268 | return nr_printable_breakpoints; | |
c906108c SS |
5269 | } |
5270 | ||
ad443146 SS |
5271 | /* Display the value of default-collect in a way that is generally |
5272 | compatible with the breakpoint list. */ | |
5273 | ||
5274 | static void | |
5275 | default_collect_info (void) | |
5276 | { | |
5277 | /* If it has no value (which is frequently the case), say nothing; a | |
5278 | message like "No default-collect." gets in user's face when it's | |
5279 | not wanted. */ | |
5280 | if (!*default_collect) | |
5281 | return; | |
5282 | ||
5283 | /* The following phrase lines up nicely with per-tracepoint collect | |
5284 | actions. */ | |
5285 | ui_out_text (uiout, "default collect "); | |
5286 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5287 | ui_out_text (uiout, " \n"); | |
5288 | } | |
5289 | ||
c906108c | 5290 | static void |
e5a67952 | 5291 | breakpoints_info (char *args, int from_tty) |
c906108c | 5292 | { |
e5a67952 | 5293 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5294 | |
5295 | default_collect_info (); | |
d77f58be SS |
5296 | } |
5297 | ||
5298 | static void | |
e5a67952 | 5299 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5300 | { |
e5a67952 | 5301 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
d77f58be SS |
5302 | |
5303 | if (num_printed == 0) | |
5304 | { | |
e5a67952 | 5305 | if (args == NULL || *args == '\0') |
d77f58be SS |
5306 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5307 | else | |
e5a67952 | 5308 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5309 | } |
c906108c SS |
5310 | } |
5311 | ||
7a292a7a | 5312 | static void |
e5a67952 | 5313 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5314 | { |
e5a67952 | 5315 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5316 | |
5317 | default_collect_info (); | |
c906108c SS |
5318 | } |
5319 | ||
0d381245 | 5320 | static int |
714835d5 | 5321 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5322 | struct program_space *pspace, |
714835d5 | 5323 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5324 | { |
5325 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5326 | |
0d381245 VP |
5327 | for (; bl; bl = bl->next) |
5328 | { | |
6c95b8df PA |
5329 | if (bl->pspace == pspace |
5330 | && bl->address == pc | |
0d381245 VP |
5331 | && (!overlay_debugging || bl->section == section)) |
5332 | return 1; | |
5333 | } | |
5334 | return 0; | |
5335 | } | |
5336 | ||
6c95b8df PA |
5337 | /* Print a message describing any breakpoints set at PC. This |
5338 | concerns with logical breakpoints, so we match program spaces, not | |
5339 | address spaces. */ | |
c906108c SS |
5340 | |
5341 | static void | |
6c95b8df PA |
5342 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5343 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5344 | struct obj_section *section, int thread) |
c906108c | 5345 | { |
52f0bd74 AC |
5346 | int others = 0; |
5347 | struct breakpoint *b; | |
c906108c SS |
5348 | |
5349 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5350 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5351 | if (others > 0) |
5352 | { | |
a3f17187 AC |
5353 | if (others == 1) |
5354 | printf_filtered (_("Note: breakpoint ")); | |
5355 | else /* if (others == ???) */ | |
5356 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5357 | ALL_BREAKPOINTS (b) |
6c95b8df | 5358 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5359 | { |
5360 | others--; | |
5361 | printf_filtered ("%d", b->number); | |
5362 | if (b->thread == -1 && thread != -1) | |
5363 | printf_filtered (" (all threads)"); | |
5364 | else if (b->thread != -1) | |
5365 | printf_filtered (" (thread %d)", b->thread); | |
5366 | printf_filtered ("%s%s ", | |
059fb39f | 5367 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5368 | || b->enable_state == bp_call_disabled |
5369 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5370 | ? " (disabled)" |
5371 | : b->enable_state == bp_permanent | |
5372 | ? " (permanent)" | |
5373 | : ""), | |
5374 | (others > 1) ? "," | |
5375 | : ((others == 1) ? " and" : "")); | |
5376 | } | |
a3f17187 | 5377 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5378 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5379 | printf_filtered (".\n"); |
5380 | } | |
5381 | } | |
5382 | \f | |
5383 | /* Set the default place to put a breakpoint | |
5384 | for the `break' command with no arguments. */ | |
5385 | ||
5386 | void | |
6c95b8df PA |
5387 | set_default_breakpoint (int valid, struct program_space *pspace, |
5388 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5389 | int line) |
c906108c SS |
5390 | { |
5391 | default_breakpoint_valid = valid; | |
6c95b8df | 5392 | default_breakpoint_pspace = pspace; |
c906108c SS |
5393 | default_breakpoint_address = addr; |
5394 | default_breakpoint_symtab = symtab; | |
5395 | default_breakpoint_line = line; | |
5396 | } | |
5397 | ||
e4f237da KB |
5398 | /* Return true iff it is meaningful to use the address member of |
5399 | BPT. For some breakpoint types, the address member is irrelevant | |
5400 | and it makes no sense to attempt to compare it to other addresses | |
5401 | (or use it for any other purpose either). | |
5402 | ||
4a64f543 MS |
5403 | More specifically, each of the following breakpoint types will |
5404 | always have a zero valued address and we don't want to mark | |
5405 | breakpoints of any of these types to be a duplicate of an actual | |
5406 | breakpoint at address zero: | |
e4f237da KB |
5407 | |
5408 | bp_watchpoint | |
2d134ed3 PA |
5409 | bp_catchpoint |
5410 | ||
5411 | */ | |
e4f237da KB |
5412 | |
5413 | static int | |
5414 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5415 | { | |
5416 | enum bptype type = bpt->type; | |
5417 | ||
2d134ed3 PA |
5418 | return (type != bp_watchpoint && type != bp_catchpoint); |
5419 | } | |
5420 | ||
5421 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5422 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5423 | ||
5424 | static int | |
4a64f543 MS |
5425 | watchpoint_locations_match (struct bp_location *loc1, |
5426 | struct bp_location *loc2) | |
2d134ed3 | 5427 | { |
2bdf28a0 JK |
5428 | /* Both of them must not be in moribund_locations. */ |
5429 | gdb_assert (loc1->owner != NULL); | |
5430 | gdb_assert (loc2->owner != NULL); | |
5431 | ||
4a64f543 MS |
5432 | /* If the target can evaluate the condition expression in hardware, |
5433 | then we we need to insert both watchpoints even if they are at | |
5434 | the same place. Otherwise the watchpoint will only trigger when | |
5435 | the condition of whichever watchpoint was inserted evaluates to | |
5436 | true, not giving a chance for GDB to check the condition of the | |
5437 | other watchpoint. */ | |
0cf6dd15 | 5438 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5439 | && target_can_accel_watchpoint_condition (loc1->address, |
5440 | loc1->length, | |
0cf6dd15 TJB |
5441 | loc1->watchpoint_type, |
5442 | loc1->owner->cond_exp)) | |
5443 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5444 | && target_can_accel_watchpoint_condition (loc2->address, |
5445 | loc2->length, | |
0cf6dd15 TJB |
5446 | loc2->watchpoint_type, |
5447 | loc2->owner->cond_exp))) | |
5448 | return 0; | |
5449 | ||
85d721b8 PA |
5450 | /* Note that this checks the owner's type, not the location's. In |
5451 | case the target does not support read watchpoints, but does | |
5452 | support access watchpoints, we'll have bp_read_watchpoint | |
5453 | watchpoints with hw_access locations. Those should be considered | |
5454 | duplicates of hw_read locations. The hw_read locations will | |
5455 | become hw_access locations later. */ | |
2d134ed3 PA |
5456 | return (loc1->owner->type == loc2->owner->type |
5457 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5458 | && loc1->address == loc2->address | |
5459 | && loc1->length == loc2->length); | |
e4f237da KB |
5460 | } |
5461 | ||
6c95b8df PA |
5462 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5463 | same breakpoint location. In most targets, this can only be true | |
5464 | if ASPACE1 matches ASPACE2. On targets that have global | |
5465 | breakpoints, the address space doesn't really matter. */ | |
5466 | ||
5467 | static int | |
5468 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5469 | struct address_space *aspace2, CORE_ADDR addr2) | |
5470 | { | |
5471 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5472 | || aspace1 == aspace2) | |
5473 | && addr1 == addr2); | |
5474 | } | |
5475 | ||
2d134ed3 PA |
5476 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5477 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5478 | represent the same location. */ | |
5479 | ||
5480 | static int | |
4a64f543 MS |
5481 | breakpoint_locations_match (struct bp_location *loc1, |
5482 | struct bp_location *loc2) | |
2d134ed3 | 5483 | { |
2bdf28a0 JK |
5484 | int hw_point1, hw_point2; |
5485 | ||
5486 | /* Both of them must not be in moribund_locations. */ | |
5487 | gdb_assert (loc1->owner != NULL); | |
5488 | gdb_assert (loc2->owner != NULL); | |
5489 | ||
5490 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5491 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5492 | |
5493 | if (hw_point1 != hw_point2) | |
5494 | return 0; | |
5495 | else if (hw_point1) | |
5496 | return watchpoint_locations_match (loc1, loc2); | |
5497 | else | |
5498 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5499 | loc2->pspace->aspace, loc2->address); | |
5500 | } | |
5501 | ||
76897487 KB |
5502 | static void |
5503 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5504 | int bnum, int have_bnum) | |
5505 | { | |
f63fbe86 MS |
5506 | /* The longest string possibly returned by hex_string_custom |
5507 | is 50 chars. These must be at least that big for safety. */ | |
5508 | char astr1[64]; | |
5509 | char astr2[64]; | |
76897487 | 5510 | |
bb599908 PH |
5511 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5512 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5513 | if (have_bnum) |
8a3fe4f8 | 5514 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5515 | bnum, astr1, astr2); |
5516 | else | |
8a3fe4f8 | 5517 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5518 | } |
5519 | ||
4a64f543 MS |
5520 | /* Adjust a breakpoint's address to account for architectural |
5521 | constraints on breakpoint placement. Return the adjusted address. | |
5522 | Note: Very few targets require this kind of adjustment. For most | |
5523 | targets, this function is simply the identity function. */ | |
76897487 KB |
5524 | |
5525 | static CORE_ADDR | |
a6d9a66e UW |
5526 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5527 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5528 | { |
a6d9a66e | 5529 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5530 | { |
5531 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5532 | return bpaddr; | |
5533 | } | |
88f7da05 KB |
5534 | else if (bptype == bp_watchpoint |
5535 | || bptype == bp_hardware_watchpoint | |
5536 | || bptype == bp_read_watchpoint | |
5537 | || bptype == bp_access_watchpoint | |
fe798b75 | 5538 | || bptype == bp_catchpoint) |
88f7da05 KB |
5539 | { |
5540 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5541 | have their addresses modified. */ | |
5542 | return bpaddr; | |
5543 | } | |
76897487 KB |
5544 | else |
5545 | { | |
5546 | CORE_ADDR adjusted_bpaddr; | |
5547 | ||
5548 | /* Some targets have architectural constraints on the placement | |
5549 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5550 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5551 | |
5552 | /* An adjusted breakpoint address can significantly alter | |
5553 | a user's expectations. Print a warning if an adjustment | |
5554 | is required. */ | |
5555 | if (adjusted_bpaddr != bpaddr) | |
5556 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5557 | ||
5558 | return adjusted_bpaddr; | |
5559 | } | |
5560 | } | |
5561 | ||
7cc221ef DJ |
5562 | /* Allocate a struct bp_location. */ |
5563 | ||
26bb91f3 | 5564 | static struct bp_location * |
39d61571 | 5565 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5566 | { |
afe38095 | 5567 | struct bp_location *loc; |
7cc221ef DJ |
5568 | |
5569 | loc = xmalloc (sizeof (struct bp_location)); | |
5570 | memset (loc, 0, sizeof (*loc)); | |
5571 | ||
e049a4b5 | 5572 | loc->owner = bpt; |
511a6cd4 | 5573 | loc->cond = NULL; |
0d381245 VP |
5574 | loc->shlib_disabled = 0; |
5575 | loc->enabled = 1; | |
e049a4b5 | 5576 | |
39d61571 | 5577 | switch (bpt->type) |
e049a4b5 DJ |
5578 | { |
5579 | case bp_breakpoint: | |
5580 | case bp_until: | |
5581 | case bp_finish: | |
5582 | case bp_longjmp: | |
5583 | case bp_longjmp_resume: | |
186c406b TT |
5584 | case bp_exception: |
5585 | case bp_exception_resume: | |
e049a4b5 | 5586 | case bp_step_resume: |
e049a4b5 DJ |
5587 | case bp_watchpoint_scope: |
5588 | case bp_call_dummy: | |
aa7d318d | 5589 | case bp_std_terminate: |
e049a4b5 DJ |
5590 | case bp_shlib_event: |
5591 | case bp_thread_event: | |
5592 | case bp_overlay_event: | |
4efc6507 | 5593 | case bp_jit_event: |
0fd8e87f | 5594 | case bp_longjmp_master: |
aa7d318d | 5595 | case bp_std_terminate_master: |
186c406b | 5596 | case bp_exception_master: |
e049a4b5 DJ |
5597 | loc->loc_type = bp_loc_software_breakpoint; |
5598 | break; | |
5599 | case bp_hardware_breakpoint: | |
5600 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5601 | break; | |
5602 | case bp_hardware_watchpoint: | |
5603 | case bp_read_watchpoint: | |
5604 | case bp_access_watchpoint: | |
5605 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5606 | break; | |
5607 | case bp_watchpoint: | |
ce78b96d | 5608 | case bp_catchpoint: |
15c3d785 PA |
5609 | case bp_tracepoint: |
5610 | case bp_fast_tracepoint: | |
0fb4aa4b | 5611 | case bp_static_tracepoint: |
e049a4b5 DJ |
5612 | loc->loc_type = bp_loc_other; |
5613 | break; | |
5614 | default: | |
e2e0b3e5 | 5615 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5616 | } |
5617 | ||
f431efe5 | 5618 | loc->refc = 1; |
7cc221ef DJ |
5619 | return loc; |
5620 | } | |
5621 | ||
f431efe5 PA |
5622 | static void |
5623 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5624 | { |
5625 | if (loc->cond) | |
5626 | xfree (loc->cond); | |
74960c60 VP |
5627 | |
5628 | if (loc->function_name) | |
5629 | xfree (loc->function_name); | |
f431efe5 | 5630 | |
fe3f5fa8 VP |
5631 | xfree (loc); |
5632 | } | |
5633 | ||
f431efe5 PA |
5634 | /* Increment reference count. */ |
5635 | ||
5636 | static void | |
5637 | incref_bp_location (struct bp_location *bl) | |
5638 | { | |
5639 | ++bl->refc; | |
5640 | } | |
5641 | ||
5642 | /* Decrement reference count. If the reference count reaches 0, | |
5643 | destroy the bp_location. Sets *BLP to NULL. */ | |
5644 | ||
5645 | static void | |
5646 | decref_bp_location (struct bp_location **blp) | |
5647 | { | |
0807b50c PA |
5648 | gdb_assert ((*blp)->refc > 0); |
5649 | ||
f431efe5 PA |
5650 | if (--(*blp)->refc == 0) |
5651 | free_bp_location (*blp); | |
5652 | *blp = NULL; | |
5653 | } | |
5654 | ||
4a64f543 MS |
5655 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5656 | type BPTYPE and has no locations as yet. */ | |
5657 | /* This function is used in gdbtk sources and thus can not be made | |
5658 | static. */ | |
c906108c | 5659 | |
c40e75cd | 5660 | static struct breakpoint * |
a6d9a66e UW |
5661 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5662 | enum bptype bptype) | |
c906108c | 5663 | { |
52f0bd74 | 5664 | struct breakpoint *b, *b1; |
c906108c SS |
5665 | |
5666 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5667 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5668 | |
4d28f7a8 | 5669 | b->type = bptype; |
a6d9a66e | 5670 | b->gdbarch = gdbarch; |
c906108c SS |
5671 | b->language = current_language->la_language; |
5672 | b->input_radix = input_radix; | |
5673 | b->thread = -1; | |
b5de0fa7 | 5674 | b->enable_state = bp_enabled; |
c906108c SS |
5675 | b->next = 0; |
5676 | b->silent = 0; | |
5677 | b->ignore_count = 0; | |
5678 | b->commands = NULL; | |
818dd999 | 5679 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5680 | b->forked_inferior_pid = null_ptid; |
c906108c | 5681 | b->exec_pathname = NULL; |
a96d9b2e | 5682 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5683 | b->ops = NULL; |
0d381245 | 5684 | b->condition_not_parsed = 0; |
84f4c1fe | 5685 | b->py_bp_object = NULL; |
c906108c | 5686 | |
4a64f543 MS |
5687 | /* Add this breakpoint to the end of the chain so that a list of |
5688 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5689 | |
5690 | b1 = breakpoint_chain; | |
5691 | if (b1 == 0) | |
5692 | breakpoint_chain = b; | |
5693 | else | |
5694 | { | |
5695 | while (b1->next) | |
5696 | b1 = b1->next; | |
5697 | b1->next = b; | |
5698 | } | |
0d381245 VP |
5699 | return b; |
5700 | } | |
5701 | ||
5702 | /* Initialize loc->function_name. */ | |
5703 | static void | |
5704 | set_breakpoint_location_function (struct bp_location *loc) | |
5705 | { | |
2bdf28a0 JK |
5706 | gdb_assert (loc->owner != NULL); |
5707 | ||
0d381245 | 5708 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5709 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5710 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5711 | { |
5712 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5713 | NULL, NULL); | |
5714 | if (loc->function_name) | |
5715 | loc->function_name = xstrdup (loc->function_name); | |
5716 | } | |
5717 | } | |
5718 | ||
a6d9a66e UW |
5719 | /* Attempt to determine architecture of location identified by SAL. */ |
5720 | static struct gdbarch * | |
5721 | get_sal_arch (struct symtab_and_line sal) | |
5722 | { | |
5723 | if (sal.section) | |
5724 | return get_objfile_arch (sal.section->objfile); | |
5725 | if (sal.symtab) | |
5726 | return get_objfile_arch (sal.symtab->objfile); | |
5727 | ||
5728 | return NULL; | |
5729 | } | |
5730 | ||
0d381245 VP |
5731 | /* set_raw_breakpoint is a low level routine for allocating and |
5732 | partially initializing a breakpoint of type BPTYPE. The newly | |
5733 | created breakpoint's address, section, source file name, and line | |
5734 | number are provided by SAL. The newly created and partially | |
5735 | initialized breakpoint is added to the breakpoint chain and | |
5736 | is also returned as the value of this function. | |
5737 | ||
5738 | It is expected that the caller will complete the initialization of | |
5739 | the newly created breakpoint struct as well as output any status | |
5740 | information regarding the creation of a new breakpoint. In | |
5741 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5742 | number! Care should be taken to not allow an error to occur | |
5743 | prior to completing the initialization of the breakpoint. If this | |
5744 | should happen, a bogus breakpoint will be left on the chain. */ | |
5745 | ||
63c252f8 | 5746 | struct breakpoint * |
a6d9a66e UW |
5747 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5748 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5749 | { |
4a64f543 MS |
5750 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5751 | bptype); | |
0d381245 | 5752 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5753 | struct gdbarch *loc_gdbarch; |
5754 | ||
5755 | loc_gdbarch = get_sal_arch (sal); | |
5756 | if (!loc_gdbarch) | |
5757 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5758 | |
6c95b8df PA |
5759 | if (bptype != bp_catchpoint) |
5760 | gdb_assert (sal.pspace != NULL); | |
5761 | ||
0d381245 VP |
5762 | /* Adjust the breakpoint's address prior to allocating a location. |
5763 | Once we call allocate_bp_location(), that mostly uninitialized | |
5764 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5765 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5766 | not want its scan of the location chain to find a breakpoint and |
5767 | location that's only been partially initialized. */ | |
4a64f543 MS |
5768 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5769 | sal.pc, b->type); | |
0d381245 | 5770 | |
39d61571 | 5771 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5772 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5773 | b->loc->requested_address = sal.pc; |
5774 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5775 | b->loc->pspace = sal.pspace; |
5776 | ||
5777 | /* Store the program space that was used to set the breakpoint, for | |
5778 | breakpoint resetting. */ | |
5779 | b->pspace = sal.pspace; | |
0d381245 VP |
5780 | |
5781 | if (sal.symtab == NULL) | |
5782 | b->source_file = NULL; | |
5783 | else | |
1b36a34b | 5784 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5785 | b->loc->section = sal.section; |
5786 | b->line_number = sal.line; | |
5787 | ||
5788 | set_breakpoint_location_function (b->loc); | |
c906108c | 5789 | |
c906108c SS |
5790 | breakpoints_changed (); |
5791 | ||
5792 | return b; | |
5793 | } | |
5794 | ||
c2c6d25f JM |
5795 | |
5796 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5797 | instruction, hard-wired into the inferior's code. */ | |
5798 | void | |
5799 | make_breakpoint_permanent (struct breakpoint *b) | |
5800 | { | |
0d381245 | 5801 | struct bp_location *bl; |
cc59ec59 | 5802 | |
b5de0fa7 | 5803 | b->enable_state = bp_permanent; |
c2c6d25f | 5804 | |
4a64f543 MS |
5805 | /* By definition, permanent breakpoints are already present in the |
5806 | code. Mark all locations as inserted. For now, | |
5807 | make_breakpoint_permanent is called in just one place, so it's | |
5808 | hard to say if it's reasonable to have permanent breakpoint with | |
5809 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5810 | for (bl = b->loc; bl; bl = bl->next) |
5811 | bl->inserted = 1; | |
c2c6d25f JM |
5812 | } |
5813 | ||
53a5351d | 5814 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5815 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5816 | initiated the operation. */ | |
c906108c SS |
5817 | |
5818 | void | |
186c406b | 5819 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5820 | { |
35df4500 | 5821 | struct breakpoint *b, *b_tmp; |
186c406b | 5822 | int thread = tp->num; |
0fd8e87f UW |
5823 | |
5824 | /* To avoid having to rescan all objfile symbols at every step, | |
5825 | we maintain a list of continually-inserted but always disabled | |
5826 | longjmp "master" breakpoints. Here, we simply create momentary | |
5827 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5828 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5829 | if (b->pspace == current_program_space |
186c406b TT |
5830 | && (b->type == bp_longjmp_master |
5831 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5832 | { |
5833 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5834 | |
186c406b | 5835 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5836 | clone->thread = thread; |
5837 | } | |
186c406b TT |
5838 | |
5839 | tp->initiating_frame = frame; | |
c906108c SS |
5840 | } |
5841 | ||
611c83ae | 5842 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5843 | void |
611c83ae | 5844 | delete_longjmp_breakpoint (int thread) |
c906108c | 5845 | { |
35df4500 | 5846 | struct breakpoint *b, *b_tmp; |
c906108c | 5847 | |
35df4500 | 5848 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5849 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5850 | { |
5851 | if (b->thread == thread) | |
5852 | delete_breakpoint (b); | |
5853 | } | |
c906108c SS |
5854 | } |
5855 | ||
1900040c MS |
5856 | void |
5857 | enable_overlay_breakpoints (void) | |
5858 | { | |
52f0bd74 | 5859 | struct breakpoint *b; |
1900040c MS |
5860 | |
5861 | ALL_BREAKPOINTS (b) | |
5862 | if (b->type == bp_overlay_event) | |
5863 | { | |
5864 | b->enable_state = bp_enabled; | |
b60e7edf | 5865 | update_global_location_list (1); |
c02f5703 | 5866 | overlay_events_enabled = 1; |
1900040c MS |
5867 | } |
5868 | } | |
5869 | ||
5870 | void | |
5871 | disable_overlay_breakpoints (void) | |
5872 | { | |
52f0bd74 | 5873 | struct breakpoint *b; |
1900040c MS |
5874 | |
5875 | ALL_BREAKPOINTS (b) | |
5876 | if (b->type == bp_overlay_event) | |
5877 | { | |
5878 | b->enable_state = bp_disabled; | |
b60e7edf | 5879 | update_global_location_list (0); |
c02f5703 | 5880 | overlay_events_enabled = 0; |
1900040c MS |
5881 | } |
5882 | } | |
5883 | ||
aa7d318d TT |
5884 | /* Set an active std::terminate breakpoint for each std::terminate |
5885 | master breakpoint. */ | |
5886 | void | |
5887 | set_std_terminate_breakpoint (void) | |
5888 | { | |
35df4500 | 5889 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5890 | |
35df4500 | 5891 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5892 | if (b->pspace == current_program_space |
5893 | && b->type == bp_std_terminate_master) | |
5894 | { | |
5895 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5896 | clone->type = bp_std_terminate; | |
5897 | } | |
5898 | } | |
5899 | ||
5900 | /* Delete all the std::terminate breakpoints. */ | |
5901 | void | |
5902 | delete_std_terminate_breakpoint (void) | |
5903 | { | |
35df4500 | 5904 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5905 | |
35df4500 | 5906 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5907 | if (b->type == bp_std_terminate) |
5908 | delete_breakpoint (b); | |
5909 | } | |
5910 | ||
c4093a6a | 5911 | struct breakpoint * |
a6d9a66e | 5912 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5913 | { |
5914 | struct breakpoint *b; | |
c4093a6a | 5915 | |
a6d9a66e | 5916 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5917 | |
b5de0fa7 | 5918 | b->enable_state = bp_enabled; |
c4093a6a | 5919 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5920 | b->addr_string |
5921 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5922 | |
b60e7edf | 5923 | update_global_location_list_nothrow (1); |
74960c60 | 5924 | |
c4093a6a JM |
5925 | return b; |
5926 | } | |
5927 | ||
5928 | void | |
5929 | remove_thread_event_breakpoints (void) | |
5930 | { | |
35df4500 | 5931 | struct breakpoint *b, *b_tmp; |
c4093a6a | 5932 | |
35df4500 | 5933 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5934 | if (b->type == bp_thread_event |
5935 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5936 | delete_breakpoint (b); |
5937 | } | |
5938 | ||
0101ce28 JJ |
5939 | struct captured_parse_breakpoint_args |
5940 | { | |
5941 | char **arg_p; | |
5942 | struct symtabs_and_lines *sals_p; | |
5943 | char ***addr_string_p; | |
5944 | int *not_found_ptr; | |
5945 | }; | |
5946 | ||
5947 | struct lang_and_radix | |
5948 | { | |
5949 | enum language lang; | |
5950 | int radix; | |
5951 | }; | |
5952 | ||
4efc6507 DE |
5953 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5954 | ||
5955 | struct breakpoint * | |
5956 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5957 | { | |
5958 | struct breakpoint *b; | |
5959 | ||
5960 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5961 | update_global_location_list_nothrow (1); | |
5962 | return b; | |
5963 | } | |
0101ce28 | 5964 | |
03673fc7 PP |
5965 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
5966 | ||
5967 | void | |
5968 | remove_jit_event_breakpoints (void) | |
5969 | { | |
5970 | struct breakpoint *b, *b_tmp; | |
5971 | ||
5972 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5973 | if (b->type == bp_jit_event | |
5974 | && b->loc->pspace == current_program_space) | |
5975 | delete_breakpoint (b); | |
5976 | } | |
5977 | ||
cae688ec JJ |
5978 | void |
5979 | remove_solib_event_breakpoints (void) | |
5980 | { | |
35df4500 | 5981 | struct breakpoint *b, *b_tmp; |
cae688ec | 5982 | |
35df4500 | 5983 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5984 | if (b->type == bp_shlib_event |
5985 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5986 | delete_breakpoint (b); |
5987 | } | |
5988 | ||
5989 | struct breakpoint * | |
a6d9a66e | 5990 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5991 | { |
5992 | struct breakpoint *b; | |
5993 | ||
a6d9a66e | 5994 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5995 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5996 | return b; |
5997 | } | |
5998 | ||
5999 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6000 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6001 | ||
6002 | void | |
cb851954 | 6003 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6004 | { |
876fa593 | 6005 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6006 | |
876fa593 | 6007 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6008 | { |
2bdf28a0 | 6009 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6010 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6011 | |
4a64f543 MS |
6012 | /* We apply the check to all breakpoints, including disabled for |
6013 | those with loc->duplicate set. This is so that when breakpoint | |
6014 | becomes enabled, or the duplicate is removed, gdb will try to | |
6015 | insert all breakpoints. If we don't set shlib_disabled here, | |
6016 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6017 | if (((b->type == bp_breakpoint) |
508ccb1f | 6018 | || (b->type == bp_jit_event) |
1042e4c0 | 6019 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6020 | || (is_tracepoint (b))) |
6c95b8df | 6021 | && loc->pspace == current_program_space |
0d381245 | 6022 | && !loc->shlib_disabled |
a77053c2 | 6023 | #ifdef PC_SOLIB |
0d381245 | 6024 | && PC_SOLIB (loc->address) |
a77053c2 | 6025 | #else |
6c95b8df | 6026 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6027 | #endif |
6028 | ) | |
0d381245 VP |
6029 | { |
6030 | loc->shlib_disabled = 1; | |
6031 | } | |
cae688ec JJ |
6032 | } |
6033 | } | |
6034 | ||
4a64f543 MS |
6035 | /* Disable any breakpoints that are in in an unloaded shared library. |
6036 | Only apply to enabled breakpoints, disabled ones can just stay | |
6037 | disabled. */ | |
84acb35a | 6038 | |
75149521 | 6039 | static void |
84acb35a JJ |
6040 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6041 | { | |
876fa593 | 6042 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6043 | int disabled_shlib_breaks = 0; |
6044 | ||
c86cf029 VP |
6045 | /* SunOS a.out shared libraries are always mapped, so do not |
6046 | disable breakpoints; they will only be reported as unloaded | |
6047 | through clear_solib when GDB discards its shared library | |
6048 | list. See clear_solib for more information. */ | |
6049 | if (exec_bfd != NULL | |
6050 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6051 | return; | |
6052 | ||
876fa593 | 6053 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6054 | { |
2bdf28a0 | 6055 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6056 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6057 | |
0d381245 VP |
6058 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
6059 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 6060 | && solib->pspace == loc->pspace |
e2dd7057 | 6061 | && !loc->shlib_disabled |
508ccb1f TT |
6062 | && (b->type == bp_breakpoint |
6063 | || b->type == bp_jit_event | |
6064 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 6065 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6066 | { |
e2dd7057 PP |
6067 | loc->shlib_disabled = 1; |
6068 | /* At this point, we cannot rely on remove_breakpoint | |
6069 | succeeding so we must mark the breakpoint as not inserted | |
6070 | to prevent future errors occurring in remove_breakpoints. */ | |
6071 | loc->inserted = 0; | |
6072 | if (!disabled_shlib_breaks) | |
6073 | { | |
6074 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6075 | warning (_("Temporarily disabling breakpoints " |
6076 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6077 | solib->so_name); |
84acb35a | 6078 | } |
e2dd7057 | 6079 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6080 | } |
6081 | } | |
84acb35a JJ |
6082 | } |
6083 | ||
ce78b96d JB |
6084 | /* FORK & VFORK catchpoints. */ |
6085 | ||
4a64f543 MS |
6086 | /* Implement the "insert" breakpoint_ops method for fork |
6087 | catchpoints. */ | |
ce78b96d | 6088 | |
77b06cd7 TJB |
6089 | static int |
6090 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6091 | { |
77b06cd7 | 6092 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6093 | } |
6094 | ||
4a64f543 MS |
6095 | /* Implement the "remove" breakpoint_ops method for fork |
6096 | catchpoints. */ | |
ce78b96d JB |
6097 | |
6098 | static int | |
77b06cd7 | 6099 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6100 | { |
6101 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6102 | } | |
6103 | ||
6104 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6105 | catchpoints. */ | |
6106 | ||
6107 | static int | |
6108 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
6109 | { | |
6110 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
6111 | } | |
6112 | ||
4a64f543 MS |
6113 | /* Implement the "print_it" breakpoint_ops method for fork |
6114 | catchpoints. */ | |
ce78b96d JB |
6115 | |
6116 | static enum print_stop_action | |
6117 | print_it_catch_fork (struct breakpoint *b) | |
6118 | { | |
6119 | annotate_catchpoint (b->number); | |
6120 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6121 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6122 | return PRINT_SRC_AND_LOC; | |
6123 | } | |
6124 | ||
4a64f543 MS |
6125 | /* Implement the "print_one" breakpoint_ops method for fork |
6126 | catchpoints. */ | |
ce78b96d JB |
6127 | |
6128 | static void | |
a6d9a66e | 6129 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6130 | { |
79a45b7d TT |
6131 | struct value_print_options opts; |
6132 | ||
6133 | get_user_print_options (&opts); | |
6134 | ||
4a64f543 MS |
6135 | /* Field 4, the address, is omitted (which makes the columns not |
6136 | line up too nicely with the headers, but the effect is relatively | |
6137 | readable). */ | |
79a45b7d | 6138 | if (opts.addressprint) |
ce78b96d JB |
6139 | ui_out_field_skip (uiout, "addr"); |
6140 | annotate_field (5); | |
6141 | ui_out_text (uiout, "fork"); | |
6142 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6143 | { | |
6144 | ui_out_text (uiout, ", process "); | |
6145 | ui_out_field_int (uiout, "what", | |
6146 | ptid_get_pid (b->forked_inferior_pid)); | |
6147 | ui_out_spaces (uiout, 1); | |
6148 | } | |
6149 | } | |
6150 | ||
6151 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6152 | catchpoints. */ | |
6153 | ||
6154 | static void | |
6155 | print_mention_catch_fork (struct breakpoint *b) | |
6156 | { | |
6157 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6158 | } | |
6159 | ||
6149aea9 PA |
6160 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6161 | catchpoints. */ | |
6162 | ||
6163 | static void | |
6164 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6165 | { | |
6166 | fprintf_unfiltered (fp, "catch fork"); | |
6167 | } | |
6168 | ||
ce78b96d JB |
6169 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6170 | ||
6171 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6172 | { | |
6173 | insert_catch_fork, | |
6174 | remove_catch_fork, | |
6175 | breakpoint_hit_catch_fork, | |
e09342b5 | 6176 | NULL, /* resources_needed */ |
ce78b96d JB |
6177 | print_it_catch_fork, |
6178 | print_one_catch_fork, | |
6149aea9 PA |
6179 | print_mention_catch_fork, |
6180 | print_recreate_catch_fork | |
ce78b96d JB |
6181 | }; |
6182 | ||
4a64f543 MS |
6183 | /* Implement the "insert" breakpoint_ops method for vfork |
6184 | catchpoints. */ | |
ce78b96d | 6185 | |
77b06cd7 TJB |
6186 | static int |
6187 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6188 | { |
77b06cd7 | 6189 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6190 | } |
6191 | ||
4a64f543 MS |
6192 | /* Implement the "remove" breakpoint_ops method for vfork |
6193 | catchpoints. */ | |
ce78b96d JB |
6194 | |
6195 | static int | |
77b06cd7 | 6196 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6197 | { |
6198 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6199 | } | |
6200 | ||
6201 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6202 | catchpoints. */ | |
6203 | ||
6204 | static int | |
6205 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
6206 | { | |
6207 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
6208 | } | |
6209 | ||
4a64f543 MS |
6210 | /* Implement the "print_it" breakpoint_ops method for vfork |
6211 | catchpoints. */ | |
ce78b96d JB |
6212 | |
6213 | static enum print_stop_action | |
6214 | print_it_catch_vfork (struct breakpoint *b) | |
6215 | { | |
6216 | annotate_catchpoint (b->number); | |
6217 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6218 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6219 | return PRINT_SRC_AND_LOC; | |
6220 | } | |
6221 | ||
4a64f543 MS |
6222 | /* Implement the "print_one" breakpoint_ops method for vfork |
6223 | catchpoints. */ | |
ce78b96d JB |
6224 | |
6225 | static void | |
a6d9a66e | 6226 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6227 | { |
79a45b7d TT |
6228 | struct value_print_options opts; |
6229 | ||
6230 | get_user_print_options (&opts); | |
4a64f543 MS |
6231 | /* Field 4, the address, is omitted (which makes the columns not |
6232 | line up too nicely with the headers, but the effect is relatively | |
6233 | readable). */ | |
79a45b7d | 6234 | if (opts.addressprint) |
ce78b96d JB |
6235 | ui_out_field_skip (uiout, "addr"); |
6236 | annotate_field (5); | |
6237 | ui_out_text (uiout, "vfork"); | |
6238 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6239 | { | |
6240 | ui_out_text (uiout, ", process "); | |
6241 | ui_out_field_int (uiout, "what", | |
6242 | ptid_get_pid (b->forked_inferior_pid)); | |
6243 | ui_out_spaces (uiout, 1); | |
6244 | } | |
6245 | } | |
6246 | ||
6247 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6248 | catchpoints. */ | |
6249 | ||
6250 | static void | |
6251 | print_mention_catch_vfork (struct breakpoint *b) | |
6252 | { | |
6253 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6254 | } | |
6255 | ||
6149aea9 PA |
6256 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6257 | catchpoints. */ | |
6258 | ||
6259 | static void | |
6260 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6261 | { | |
6262 | fprintf_unfiltered (fp, "catch vfork"); | |
6263 | } | |
6264 | ||
ce78b96d JB |
6265 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6266 | ||
6267 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6268 | { | |
6269 | insert_catch_vfork, | |
6270 | remove_catch_vfork, | |
6271 | breakpoint_hit_catch_vfork, | |
e09342b5 | 6272 | NULL, /* resources_needed */ |
ce78b96d JB |
6273 | print_it_catch_vfork, |
6274 | print_one_catch_vfork, | |
6149aea9 PA |
6275 | print_mention_catch_vfork, |
6276 | print_recreate_catch_vfork | |
ce78b96d JB |
6277 | }; |
6278 | ||
a96d9b2e SDJ |
6279 | /* Implement the "insert" breakpoint_ops method for syscall |
6280 | catchpoints. */ | |
6281 | ||
77b06cd7 TJB |
6282 | static int |
6283 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e SDJ |
6284 | { |
6285 | struct inferior *inf = current_inferior (); | |
6286 | ||
6287 | ++inf->total_syscalls_count; | |
77b06cd7 | 6288 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6289 | ++inf->any_syscall_count; |
6290 | else | |
6291 | { | |
6292 | int i, iter; | |
cc59ec59 | 6293 | |
a96d9b2e | 6294 | for (i = 0; |
77b06cd7 | 6295 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6296 | i++) |
6297 | { | |
6298 | int elem; | |
cc59ec59 | 6299 | |
a96d9b2e SDJ |
6300 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6301 | { | |
6302 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6303 | uintptr_t vec_addr_offset |
6304 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6305 | uintptr_t vec_addr; |
6306 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6307 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6308 | vec_addr_offset; | |
6309 | memset ((void *) vec_addr, 0, | |
6310 | (iter + 1 - old_size) * sizeof (int)); | |
6311 | } | |
6312 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6313 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6314 | } | |
6315 | } | |
6316 | ||
77b06cd7 TJB |
6317 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6318 | inf->total_syscalls_count != 0, | |
6319 | inf->any_syscall_count, | |
6320 | VEC_length (int, inf->syscalls_counts), | |
6321 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6322 | } |
6323 | ||
6324 | /* Implement the "remove" breakpoint_ops method for syscall | |
6325 | catchpoints. */ | |
6326 | ||
6327 | static int | |
77b06cd7 | 6328 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e SDJ |
6329 | { |
6330 | struct inferior *inf = current_inferior (); | |
6331 | ||
6332 | --inf->total_syscalls_count; | |
77b06cd7 | 6333 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6334 | --inf->any_syscall_count; |
6335 | else | |
6336 | { | |
6337 | int i, iter; | |
cc59ec59 | 6338 | |
a96d9b2e | 6339 | for (i = 0; |
77b06cd7 | 6340 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6341 | i++) |
6342 | { | |
6343 | int elem; | |
6344 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6345 | /* Shouldn't happen. */ | |
6346 | continue; | |
6347 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6348 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6349 | } | |
6350 | } | |
6351 | ||
6352 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6353 | inf->total_syscalls_count != 0, | |
6354 | inf->any_syscall_count, | |
6355 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6356 | VEC_address (int, |
6357 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6358 | } |
6359 | ||
6360 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6361 | catchpoints. */ | |
6362 | ||
6363 | static int | |
6364 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6365 | { | |
4a64f543 MS |
6366 | /* We must check if we are catching specific syscalls in this |
6367 | breakpoint. If we are, then we must guarantee that the called | |
6368 | syscall is the same syscall we are catching. */ | |
a96d9b2e SDJ |
6369 | int syscall_number = 0; |
6370 | ||
6371 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6372 | return 0; | |
6373 | ||
6374 | /* Now, checking if the syscall is the same. */ | |
6375 | if (b->syscalls_to_be_caught) | |
6376 | { | |
6377 | int i, iter; | |
cc59ec59 | 6378 | |
a96d9b2e SDJ |
6379 | for (i = 0; |
6380 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6381 | i++) | |
6382 | if (syscall_number == iter) | |
6383 | break; | |
6384 | /* Not the same. */ | |
6385 | if (!iter) | |
6386 | return 0; | |
6387 | } | |
6388 | ||
6389 | return 1; | |
6390 | } | |
6391 | ||
6392 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6393 | catchpoints. */ | |
6394 | ||
6395 | static enum print_stop_action | |
6396 | print_it_catch_syscall (struct breakpoint *b) | |
6397 | { | |
6398 | /* These are needed because we want to know in which state a | |
6399 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6400 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6401 | must print "called syscall" or "returned from syscall". */ | |
6402 | ptid_t ptid; | |
6403 | struct target_waitstatus last; | |
6404 | struct syscall s; | |
6405 | struct cleanup *old_chain; | |
6406 | char *syscall_id; | |
6407 | ||
6408 | get_last_target_status (&ptid, &last); | |
6409 | ||
6410 | get_syscall_by_number (last.value.syscall_number, &s); | |
6411 | ||
6412 | annotate_catchpoint (b->number); | |
6413 | ||
6414 | if (s.name == NULL) | |
6415 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6416 | else | |
6417 | syscall_id = xstrprintf ("'%s'", s.name); | |
6418 | ||
6419 | old_chain = make_cleanup (xfree, syscall_id); | |
6420 | ||
6421 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6422 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6423 | b->number, syscall_id); | |
6424 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6425 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6426 | b->number, syscall_id); | |
6427 | ||
6428 | do_cleanups (old_chain); | |
6429 | ||
6430 | return PRINT_SRC_AND_LOC; | |
6431 | } | |
6432 | ||
6433 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6434 | catchpoints. */ | |
6435 | ||
6436 | static void | |
6437 | print_one_catch_syscall (struct breakpoint *b, | |
6438 | struct bp_location **last_loc) | |
6439 | { | |
6440 | struct value_print_options opts; | |
6441 | ||
6442 | get_user_print_options (&opts); | |
4a64f543 MS |
6443 | /* Field 4, the address, is omitted (which makes the columns not |
6444 | line up too nicely with the headers, but the effect is relatively | |
6445 | readable). */ | |
a96d9b2e SDJ |
6446 | if (opts.addressprint) |
6447 | ui_out_field_skip (uiout, "addr"); | |
6448 | annotate_field (5); | |
6449 | ||
6450 | if (b->syscalls_to_be_caught | |
6451 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6452 | ui_out_text (uiout, "syscalls \""); | |
6453 | else | |
6454 | ui_out_text (uiout, "syscall \""); | |
6455 | ||
6456 | if (b->syscalls_to_be_caught) | |
6457 | { | |
6458 | int i, iter; | |
6459 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6460 | |
a96d9b2e SDJ |
6461 | for (i = 0; |
6462 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6463 | i++) | |
6464 | { | |
6465 | char *x = text; | |
6466 | struct syscall s; | |
6467 | get_syscall_by_number (iter, &s); | |
6468 | ||
6469 | if (s.name != NULL) | |
6470 | text = xstrprintf ("%s%s, ", text, s.name); | |
6471 | else | |
6472 | text = xstrprintf ("%s%d, ", text, iter); | |
6473 | ||
6474 | /* We have to xfree the last 'text' (now stored at 'x') | |
6475 | because xstrprintf dinamically allocates new space for it | |
6476 | on every call. */ | |
6477 | xfree (x); | |
6478 | } | |
6479 | /* Remove the last comma. */ | |
6480 | text[strlen (text) - 2] = '\0'; | |
6481 | ui_out_field_string (uiout, "what", text); | |
6482 | } | |
6483 | else | |
6484 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6485 | ui_out_text (uiout, "\" "); | |
6486 | } | |
6487 | ||
6488 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6489 | catchpoints. */ | |
6490 | ||
6491 | static void | |
6492 | print_mention_catch_syscall (struct breakpoint *b) | |
6493 | { | |
6494 | if (b->syscalls_to_be_caught) | |
6495 | { | |
6496 | int i, iter; | |
6497 | ||
6498 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6499 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6500 | else | |
6501 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6502 | ||
6503 | for (i = 0; | |
6504 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6505 | i++) | |
6506 | { | |
6507 | struct syscall s; | |
6508 | get_syscall_by_number (iter, &s); | |
6509 | ||
6510 | if (s.name) | |
6511 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6512 | else | |
6513 | printf_filtered (" %d", s.number); | |
6514 | } | |
6515 | printf_filtered (")"); | |
6516 | } | |
6517 | else | |
6518 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6519 | b->number); | |
6520 | } | |
6521 | ||
6149aea9 PA |
6522 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6523 | catchpoints. */ | |
6524 | ||
6525 | static void | |
6526 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6527 | { | |
6528 | fprintf_unfiltered (fp, "catch syscall"); | |
6529 | ||
6530 | if (b->syscalls_to_be_caught) | |
6531 | { | |
6532 | int i, iter; | |
6533 | ||
6534 | for (i = 0; | |
6535 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6536 | i++) | |
6537 | { | |
6538 | struct syscall s; | |
6539 | ||
6540 | get_syscall_by_number (iter, &s); | |
6541 | if (s.name) | |
6542 | fprintf_unfiltered (fp, " %s", s.name); | |
6543 | else | |
6544 | fprintf_unfiltered (fp, " %d", s.number); | |
6545 | } | |
6546 | } | |
6547 | } | |
6548 | ||
a96d9b2e SDJ |
6549 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6550 | ||
6551 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6552 | { | |
6553 | insert_catch_syscall, | |
6554 | remove_catch_syscall, | |
6555 | breakpoint_hit_catch_syscall, | |
e09342b5 | 6556 | NULL, /* resources_needed */ |
a96d9b2e SDJ |
6557 | print_it_catch_syscall, |
6558 | print_one_catch_syscall, | |
6149aea9 PA |
6559 | print_mention_catch_syscall, |
6560 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6561 | }; |
6562 | ||
6563 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6564 | ||
6565 | static int | |
6566 | syscall_catchpoint_p (struct breakpoint *b) | |
6567 | { | |
6568 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6569 | } | |
6570 | ||
6571 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6572 | but does NOT mention it nor update the global location list. | |
6573 | This is useful if you need to fill more fields in the | |
6574 | struct breakpoint before calling mention. | |
ce78b96d JB |
6575 | |
6576 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6577 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6578 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6579 | to the catchpoint. */ | |
6580 | ||
6581 | static struct breakpoint * | |
a96d9b2e SDJ |
6582 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6583 | char *cond_string, | |
6584 | struct breakpoint_ops *ops) | |
c906108c | 6585 | { |
c5aa993b JM |
6586 | struct symtab_and_line sal; |
6587 | struct breakpoint *b; | |
c5aa993b | 6588 | |
fe39c653 | 6589 | init_sal (&sal); |
6c95b8df | 6590 | sal.pspace = current_program_space; |
c5aa993b | 6591 | |
a6d9a66e | 6592 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6593 | set_breakpoint_count (breakpoint_count + 1); |
6594 | b->number = breakpoint_count; | |
ce78b96d | 6595 | |
1b36a34b | 6596 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6597 | b->thread = -1; |
c906108c | 6598 | b->addr_string = NULL; |
b5de0fa7 EZ |
6599 | b->enable_state = bp_enabled; |
6600 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6601 | b->ops = ops; |
c5aa993b | 6602 | |
a96d9b2e SDJ |
6603 | return b; |
6604 | } | |
6605 | ||
6606 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6607 | ||
6608 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6609 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6610 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6611 | to the catchpoint. */ | |
6612 | ||
6613 | static struct breakpoint * | |
6614 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6615 | char *cond_string, struct breakpoint_ops *ops) | |
6616 | { | |
6617 | struct breakpoint *b = | |
6618 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6619 | ||
c906108c | 6620 | mention (b); |
ce78b96d | 6621 | update_global_location_list (1); |
c906108c | 6622 | |
ce78b96d | 6623 | return b; |
c906108c | 6624 | } |
c5aa993b | 6625 | |
9b70b993 | 6626 | static void |
a6d9a66e UW |
6627 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6628 | int tempflag, char *cond_string, | |
ce78b96d | 6629 | struct breakpoint_ops *ops) |
c906108c | 6630 | { |
a6d9a66e UW |
6631 | struct breakpoint *b |
6632 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6633 | |
6634 | /* FIXME: We should put this information in a breakpoint private data | |
6635 | area. */ | |
6636 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6637 | } |
6638 | ||
fe798b75 JB |
6639 | /* Exec catchpoints. */ |
6640 | ||
77b06cd7 TJB |
6641 | static int |
6642 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6643 | { |
77b06cd7 | 6644 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6645 | } |
c906108c | 6646 | |
fe798b75 | 6647 | static int |
77b06cd7 | 6648 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6649 | { |
6650 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6651 | } | |
c906108c | 6652 | |
fe798b75 JB |
6653 | static int |
6654 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6655 | { | |
6656 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6657 | } | |
c906108c | 6658 | |
fe798b75 JB |
6659 | static enum print_stop_action |
6660 | print_it_catch_exec (struct breakpoint *b) | |
6661 | { | |
6662 | annotate_catchpoint (b->number); | |
6663 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6664 | b->exec_pathname); | |
6665 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6666 | } |
6667 | ||
fe798b75 | 6668 | static void |
a6d9a66e | 6669 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6670 | { |
6671 | struct value_print_options opts; | |
6672 | ||
6673 | get_user_print_options (&opts); | |
6674 | ||
6675 | /* Field 4, the address, is omitted (which makes the columns | |
6676 | not line up too nicely with the headers, but the effect | |
6677 | is relatively readable). */ | |
6678 | if (opts.addressprint) | |
6679 | ui_out_field_skip (uiout, "addr"); | |
6680 | annotate_field (5); | |
6681 | ui_out_text (uiout, "exec"); | |
6682 | if (b->exec_pathname != NULL) | |
6683 | { | |
6684 | ui_out_text (uiout, ", program \""); | |
6685 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6686 | ui_out_text (uiout, "\" "); | |
6687 | } | |
6688 | } | |
6689 | ||
6690 | static void | |
6691 | print_mention_catch_exec (struct breakpoint *b) | |
6692 | { | |
6693 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6694 | } | |
6695 | ||
6149aea9 PA |
6696 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6697 | catchpoints. */ | |
6698 | ||
6699 | static void | |
6700 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6701 | { | |
6702 | fprintf_unfiltered (fp, "catch exec"); | |
6703 | } | |
6704 | ||
fe798b75 JB |
6705 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6706 | { | |
6707 | insert_catch_exec, | |
6708 | remove_catch_exec, | |
6709 | breakpoint_hit_catch_exec, | |
e09342b5 | 6710 | NULL, /* resources_needed */ |
fe798b75 JB |
6711 | print_it_catch_exec, |
6712 | print_one_catch_exec, | |
6149aea9 PA |
6713 | print_mention_catch_exec, |
6714 | print_recreate_catch_exec | |
fe798b75 JB |
6715 | }; |
6716 | ||
a96d9b2e SDJ |
6717 | static void |
6718 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6719 | struct breakpoint_ops *ops) | |
6720 | { | |
6721 | struct gdbarch *gdbarch = get_current_arch (); | |
6722 | struct breakpoint *b = | |
6723 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6724 | ||
6725 | b->syscalls_to_be_caught = filter; | |
6726 | ||
6727 | /* Now, we have to mention the breakpoint and update the global | |
6728 | location list. */ | |
6729 | mention (b); | |
6730 | update_global_location_list (1); | |
6731 | } | |
6732 | ||
c906108c | 6733 | static int |
fba45db2 | 6734 | hw_breakpoint_used_count (void) |
c906108c | 6735 | { |
52f0bd74 | 6736 | struct breakpoint *b; |
c906108c SS |
6737 | int i = 0; |
6738 | ||
6739 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6740 | { |
d6b74ac4 | 6741 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6742 | i++; |
6743 | } | |
c906108c SS |
6744 | |
6745 | return i; | |
6746 | } | |
6747 | ||
6748 | static int | |
fba45db2 | 6749 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6750 | { |
c906108c | 6751 | int i = 0; |
e09342b5 TJB |
6752 | struct breakpoint *b; |
6753 | struct bp_location *bl; | |
c906108c SS |
6754 | |
6755 | *other_type_used = 0; | |
6756 | ALL_BREAKPOINTS (b) | |
e09342b5 TJB |
6757 | { |
6758 | if (!breakpoint_enabled (b)) | |
6759 | continue; | |
6760 | ||
c5aa993b | 6761 | if (b->type == type) |
e09342b5 TJB |
6762 | for (bl = b->loc; bl; bl = bl->next) |
6763 | { | |
6764 | /* Special types of hardware watchpoints may use more than | |
6765 | one register. */ | |
6766 | if (b->ops && b->ops->resources_needed) | |
6767 | i += b->ops->resources_needed (bl); | |
6768 | else | |
6769 | i++; | |
6770 | } | |
cc60f2e3 | 6771 | else if (is_hardware_watchpoint (b)) |
c5aa993b | 6772 | *other_type_used = 1; |
e09342b5 TJB |
6773 | } |
6774 | ||
c906108c SS |
6775 | return i; |
6776 | } | |
6777 | ||
c906108c | 6778 | void |
fba45db2 | 6779 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6780 | { |
c5aa993b | 6781 | struct breakpoint *b; |
c906108c SS |
6782 | |
6783 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6784 | { |
cc60f2e3 | 6785 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6786 | { |
b5de0fa7 | 6787 | b->enable_state = bp_call_disabled; |
b60e7edf | 6788 | update_global_location_list (0); |
c5aa993b JM |
6789 | } |
6790 | } | |
c906108c SS |
6791 | } |
6792 | ||
6793 | void | |
fba45db2 | 6794 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6795 | { |
c5aa993b | 6796 | struct breakpoint *b; |
c906108c SS |
6797 | |
6798 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6799 | { |
cc60f2e3 | 6800 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6801 | { |
b5de0fa7 | 6802 | b->enable_state = bp_enabled; |
b60e7edf | 6803 | update_global_location_list (1); |
c5aa993b JM |
6804 | } |
6805 | } | |
c906108c SS |
6806 | } |
6807 | ||
8bea4e01 UW |
6808 | void |
6809 | disable_breakpoints_before_startup (void) | |
6810 | { | |
6811 | struct breakpoint *b; | |
6812 | int found = 0; | |
6813 | ||
6814 | ALL_BREAKPOINTS (b) | |
6815 | { | |
6c95b8df PA |
6816 | if (b->pspace != current_program_space) |
6817 | continue; | |
6818 | ||
8bea4e01 UW |
6819 | if ((b->type == bp_breakpoint |
6820 | || b->type == bp_hardware_breakpoint) | |
6821 | && breakpoint_enabled (b)) | |
6822 | { | |
6823 | b->enable_state = bp_startup_disabled; | |
6824 | found = 1; | |
6825 | } | |
6826 | } | |
6827 | ||
6828 | if (found) | |
6829 | update_global_location_list (0); | |
6830 | ||
6c95b8df | 6831 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6832 | } |
6833 | ||
6834 | void | |
6835 | enable_breakpoints_after_startup (void) | |
6836 | { | |
6837 | struct breakpoint *b; | |
6838 | int found = 0; | |
6839 | ||
6c95b8df | 6840 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6841 | |
6842 | ALL_BREAKPOINTS (b) | |
6843 | { | |
6c95b8df PA |
6844 | if (b->pspace != current_program_space) |
6845 | continue; | |
6846 | ||
8bea4e01 UW |
6847 | if ((b->type == bp_breakpoint |
6848 | || b->type == bp_hardware_breakpoint) | |
6849 | && b->enable_state == bp_startup_disabled) | |
6850 | { | |
6851 | b->enable_state = bp_enabled; | |
6852 | found = 1; | |
6853 | } | |
6854 | } | |
6855 | ||
6856 | if (found) | |
6857 | breakpoint_re_set (); | |
6858 | } | |
6859 | ||
c906108c SS |
6860 | |
6861 | /* Set a breakpoint that will evaporate an end of command | |
6862 | at address specified by SAL. | |
6863 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6864 | ||
6865 | struct breakpoint * | |
a6d9a66e UW |
6866 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6867 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6868 | { |
52f0bd74 | 6869 | struct breakpoint *b; |
edb3359d DJ |
6870 | |
6871 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6872 | one. */ | |
6873 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6874 | ||
a6d9a66e | 6875 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6876 | b->enable_state = bp_enabled; |
6877 | b->disposition = disp_donttouch; | |
818dd999 | 6878 | b->frame_id = frame_id; |
c906108c | 6879 | |
4a64f543 MS |
6880 | /* If we're debugging a multi-threaded program, then we want |
6881 | momentary breakpoints to be active in only a single thread of | |
6882 | control. */ | |
39f77062 KB |
6883 | if (in_thread_list (inferior_ptid)) |
6884 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6885 | |
b60e7edf | 6886 | update_global_location_list_nothrow (1); |
74960c60 | 6887 | |
c906108c SS |
6888 | return b; |
6889 | } | |
611c83ae | 6890 | |
e58b0e63 PA |
6891 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6892 | ORIG is NULL. */ | |
6893 | ||
6894 | struct breakpoint * | |
6895 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6896 | { | |
6897 | struct breakpoint *copy; | |
6898 | ||
6899 | /* If there's nothing to clone, then return nothing. */ | |
6900 | if (orig == NULL) | |
6901 | return NULL; | |
6902 | ||
a6d9a66e | 6903 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6904 | copy->loc = allocate_bp_location (copy); |
6905 | set_breakpoint_location_function (copy->loc); | |
6906 | ||
a6d9a66e | 6907 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6908 | copy->loc->requested_address = orig->loc->requested_address; |
6909 | copy->loc->address = orig->loc->address; | |
6910 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6911 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6912 | |
6913 | if (orig->source_file == NULL) | |
6914 | copy->source_file = NULL; | |
6915 | else | |
6916 | copy->source_file = xstrdup (orig->source_file); | |
6917 | ||
6918 | copy->line_number = orig->line_number; | |
6919 | copy->frame_id = orig->frame_id; | |
6920 | copy->thread = orig->thread; | |
6c95b8df | 6921 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6922 | |
6923 | copy->enable_state = bp_enabled; | |
6924 | copy->disposition = disp_donttouch; | |
6925 | copy->number = internal_breakpoint_number--; | |
6926 | ||
6927 | update_global_location_list_nothrow (0); | |
6928 | return copy; | |
6929 | } | |
6930 | ||
611c83ae | 6931 | struct breakpoint * |
a6d9a66e UW |
6932 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6933 | enum bptype type) | |
611c83ae PA |
6934 | { |
6935 | struct symtab_and_line sal; | |
6936 | ||
6937 | sal = find_pc_line (pc, 0); | |
6938 | sal.pc = pc; | |
6939 | sal.section = find_pc_overlay (pc); | |
6940 | sal.explicit_pc = 1; | |
6941 | ||
a6d9a66e | 6942 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6943 | } |
c906108c | 6944 | \f |
c5aa993b | 6945 | |
c906108c SS |
6946 | /* Tell the user we have just set a breakpoint B. */ |
6947 | ||
6948 | static void | |
fba45db2 | 6949 | mention (struct breakpoint *b) |
c906108c SS |
6950 | { |
6951 | int say_where = 0; | |
fa8a61dc | 6952 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6953 | struct value_print_options opts; |
6954 | ||
6955 | get_user_print_options (&opts); | |
8b93c638 | 6956 | |
9a4105ab AC |
6957 | /* FIXME: This is misplaced; mention() is called by things (like |
6958 | hitting a watchpoint) other than breakpoint creation. It should | |
6959 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6960 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6961 | observer_notify_breakpoint_created (b->number); |
c906108c | 6962 | |
3086aeae DJ |
6963 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6964 | b->ops->print_mention (b); | |
6965 | else | |
6966 | switch (b->type) | |
6967 | { | |
6968 | case bp_none: | |
3e43a32a MS |
6969 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), |
6970 | b->number); | |
3086aeae DJ |
6971 | break; |
6972 | case bp_watchpoint: | |
6973 | ui_out_text (uiout, "Watchpoint "); | |
6974 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6975 | ui_out_field_int (uiout, "number", b->number); | |
6976 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6977 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6978 | do_cleanups (ui_out_chain); |
6979 | break; | |
6980 | case bp_hardware_watchpoint: | |
6981 | ui_out_text (uiout, "Hardware watchpoint "); | |
6982 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6983 | ui_out_field_int (uiout, "number", b->number); | |
6984 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6985 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6986 | do_cleanups (ui_out_chain); |
6987 | break; | |
6988 | case bp_read_watchpoint: | |
6989 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6990 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6991 | ui_out_field_int (uiout, "number", b->number); | |
6992 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6993 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6994 | do_cleanups (ui_out_chain); |
6995 | break; | |
6996 | case bp_access_watchpoint: | |
6997 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6998 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6999 | ui_out_field_int (uiout, "number", b->number); | |
7000 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7001 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7002 | do_cleanups (ui_out_chain); |
7003 | break; | |
7004 | case bp_breakpoint: | |
7005 | if (ui_out_is_mi_like_p (uiout)) | |
7006 | { | |
7007 | say_where = 0; | |
7008 | break; | |
7009 | } | |
2cec12e5 AR |
7010 | if (b->disposition == disp_del) |
7011 | printf_filtered (_("Temporary breakpoint")); | |
7012 | else | |
7013 | printf_filtered (_("Breakpoint")); | |
7014 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
7015 | say_where = 1; |
7016 | break; | |
7017 | case bp_hardware_breakpoint: | |
7018 | if (ui_out_is_mi_like_p (uiout)) | |
7019 | { | |
7020 | say_where = 0; | |
7021 | break; | |
7022 | } | |
a3f17187 | 7023 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
7024 | say_where = 1; |
7025 | break; | |
1042e4c0 SS |
7026 | case bp_tracepoint: |
7027 | if (ui_out_is_mi_like_p (uiout)) | |
7028 | { | |
7029 | say_where = 0; | |
7030 | break; | |
7031 | } | |
7032 | printf_filtered (_("Tracepoint")); | |
7033 | printf_filtered (_(" %d"), b->number); | |
7034 | say_where = 1; | |
7035 | break; | |
7a697b8d SS |
7036 | case bp_fast_tracepoint: |
7037 | if (ui_out_is_mi_like_p (uiout)) | |
7038 | { | |
7039 | say_where = 0; | |
7040 | break; | |
7041 | } | |
7042 | printf_filtered (_("Fast tracepoint")); | |
7043 | printf_filtered (_(" %d"), b->number); | |
7044 | say_where = 1; | |
7045 | break; | |
0fb4aa4b PA |
7046 | case bp_static_tracepoint: |
7047 | if (ui_out_is_mi_like_p (uiout)) | |
7048 | { | |
7049 | say_where = 0; | |
7050 | break; | |
7051 | } | |
7052 | printf_filtered (_("Static tracepoint")); | |
7053 | printf_filtered (_(" %d"), b->number); | |
7054 | say_where = 1; | |
7055 | break; | |
3086aeae DJ |
7056 | |
7057 | case bp_until: | |
7058 | case bp_finish: | |
7059 | case bp_longjmp: | |
7060 | case bp_longjmp_resume: | |
186c406b TT |
7061 | case bp_exception: |
7062 | case bp_exception_resume: | |
3086aeae | 7063 | case bp_step_resume: |
3086aeae | 7064 | case bp_call_dummy: |
aa7d318d | 7065 | case bp_std_terminate: |
3086aeae DJ |
7066 | case bp_watchpoint_scope: |
7067 | case bp_shlib_event: | |
7068 | case bp_thread_event: | |
7069 | case bp_overlay_event: | |
4efc6507 | 7070 | case bp_jit_event: |
0fd8e87f | 7071 | case bp_longjmp_master: |
aa7d318d | 7072 | case bp_std_terminate_master: |
186c406b | 7073 | case bp_exception_master: |
3086aeae DJ |
7074 | break; |
7075 | } | |
c906108c | 7076 | |
c906108c SS |
7077 | if (say_where) |
7078 | { | |
a3f17187 AC |
7079 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
7080 | single string. */ | |
0d381245 | 7081 | if (b->loc == NULL) |
c906108c | 7082 | { |
a3f17187 | 7083 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
7084 | } |
7085 | else | |
7086 | { | |
79a45b7d | 7087 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
7088 | { |
7089 | printf_filtered (" at "); | |
5af949e3 UW |
7090 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
7091 | gdb_stdout); | |
0101ce28 JJ |
7092 | } |
7093 | if (b->source_file) | |
7094 | printf_filtered (": file %s, line %d.", | |
7095 | b->source_file, b->line_number); | |
0d381245 VP |
7096 | |
7097 | if (b->loc->next) | |
7098 | { | |
7099 | struct bp_location *loc = b->loc; | |
7100 | int n = 0; | |
7101 | for (; loc; loc = loc->next) | |
7102 | ++n; | |
7103 | printf_filtered (" (%d locations)", n); | |
7104 | } | |
7105 | ||
c906108c | 7106 | } |
c906108c | 7107 | } |
9dc5e2a9 | 7108 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7109 | return; |
c906108c SS |
7110 | printf_filtered ("\n"); |
7111 | } | |
c906108c | 7112 | \f |
c5aa993b | 7113 | |
0d381245 | 7114 | static struct bp_location * |
39d61571 | 7115 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7116 | const struct symtab_and_line *sal) |
7117 | { | |
7118 | struct bp_location *loc, **tmp; | |
7119 | ||
39d61571 | 7120 | loc = allocate_bp_location (b); |
0d381245 VP |
7121 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7122 | ; | |
7123 | *tmp = loc; | |
a6d9a66e UW |
7124 | loc->gdbarch = get_sal_arch (*sal); |
7125 | if (!loc->gdbarch) | |
7126 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7127 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7128 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7129 | loc->requested_address, b->type); | |
6c95b8df PA |
7130 | loc->pspace = sal->pspace; |
7131 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7132 | loc->section = sal->section; |
7133 | ||
7134 | set_breakpoint_location_function (loc); | |
7135 | return loc; | |
7136 | } | |
514f746b AR |
7137 | \f |
7138 | ||
7139 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7140 | return 0 otherwise. */ | |
7141 | ||
7142 | static int | |
7143 | bp_loc_is_permanent (struct bp_location *loc) | |
7144 | { | |
7145 | int len; | |
7146 | CORE_ADDR addr; | |
7147 | const gdb_byte *brk; | |
7148 | gdb_byte *target_mem; | |
939c61fa JK |
7149 | struct cleanup *cleanup; |
7150 | int retval = 0; | |
514f746b AR |
7151 | |
7152 | gdb_assert (loc != NULL); | |
7153 | ||
7154 | addr = loc->address; | |
a6d9a66e | 7155 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7156 | |
939c61fa JK |
7157 | /* Software breakpoints unsupported? */ |
7158 | if (brk == NULL) | |
7159 | return 0; | |
7160 | ||
514f746b AR |
7161 | target_mem = alloca (len); |
7162 | ||
939c61fa JK |
7163 | /* Enable the automatic memory restoration from breakpoints while |
7164 | we read the memory. Otherwise we could say about our temporary | |
7165 | breakpoints they are permanent. */ | |
6c95b8df PA |
7166 | cleanup = save_current_space_and_thread (); |
7167 | ||
7168 | switch_to_program_space_and_thread (loc->pspace); | |
7169 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7170 | |
514f746b AR |
7171 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7172 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7173 | retval = 1; |
514f746b | 7174 | |
939c61fa JK |
7175 | do_cleanups (cleanup); |
7176 | ||
7177 | return retval; | |
514f746b AR |
7178 | } |
7179 | ||
7180 | ||
c3f6f71d | 7181 | |
018d34a4 VP |
7182 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7183 | as textual description of the location, and COND_STRING | |
db107f19 | 7184 | as condition expression. */ |
018d34a4 VP |
7185 | |
7186 | static void | |
8cdf0e15 VP |
7187 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7188 | struct symtabs_and_lines sals, char *addr_string, | |
7189 | char *cond_string, | |
7190 | enum bptype type, enum bpdisp disposition, | |
7191 | int thread, int task, int ignore_count, | |
84f4c1fe PM |
7192 | struct breakpoint_ops *ops, int from_tty, |
7193 | int enabled, int internal) | |
018d34a4 | 7194 | { |
0d381245 VP |
7195 | struct breakpoint *b = NULL; |
7196 | int i; | |
018d34a4 VP |
7197 | |
7198 | if (type == bp_hardware_breakpoint) | |
7199 | { | |
7200 | int i = hw_breakpoint_used_count (); | |
7201 | int target_resources_ok = | |
d92524f1 | 7202 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7203 | i + 1, 0); |
7204 | if (target_resources_ok == 0) | |
7205 | error (_("No hardware breakpoint support in the target.")); | |
7206 | else if (target_resources_ok < 0) | |
7207 | error (_("Hardware breakpoints used exceeds limit.")); | |
7208 | } | |
7209 | ||
6c95b8df PA |
7210 | gdb_assert (sals.nelts > 0); |
7211 | ||
0d381245 VP |
7212 | for (i = 0; i < sals.nelts; ++i) |
7213 | { | |
7214 | struct symtab_and_line sal = sals.sals[i]; | |
7215 | struct bp_location *loc; | |
7216 | ||
7217 | if (from_tty) | |
5af949e3 UW |
7218 | { |
7219 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7220 | if (!loc_gdbarch) | |
7221 | loc_gdbarch = gdbarch; | |
7222 | ||
7223 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7224 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7225 | } |
0d381245 VP |
7226 | |
7227 | if (i == 0) | |
7228 | { | |
a6d9a66e | 7229 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7230 | set_breakpoint_number (internal, b); |
0d381245 | 7231 | b->thread = thread; |
4a306c9a | 7232 | b->task = task; |
018d34a4 | 7233 | |
0d381245 VP |
7234 | b->cond_string = cond_string; |
7235 | b->ignore_count = ignore_count; | |
41447f92 | 7236 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7237 | b->disposition = disposition; |
6c95b8df PA |
7238 | b->pspace = sals.sals[0].pspace; |
7239 | ||
0fb4aa4b PA |
7240 | if (type == bp_static_tracepoint) |
7241 | { | |
7242 | struct static_tracepoint_marker marker; | |
7243 | ||
7244 | if (is_marker_spec (addr_string)) | |
7245 | { | |
7246 | /* We already know the marker exists, otherwise, we | |
7247 | wouldn't see a sal for it. */ | |
7248 | char *p = &addr_string[3]; | |
7249 | char *endp; | |
7250 | char *marker_str; | |
7251 | int i; | |
7252 | ||
e9cafbcc | 7253 | p = skip_spaces (p); |
0fb4aa4b | 7254 | |
e9cafbcc | 7255 | endp = skip_to_space (p); |
0fb4aa4b PA |
7256 | |
7257 | marker_str = savestring (p, endp - p); | |
7258 | b->static_trace_marker_id = marker_str; | |
7259 | ||
3e43a32a MS |
7260 | printf_filtered (_("Probed static tracepoint " |
7261 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7262 | b->static_trace_marker_id); |
7263 | } | |
7264 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7265 | { | |
7266 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7267 | release_static_tracepoint_marker (&marker); | |
7268 | ||
3e43a32a MS |
7269 | printf_filtered (_("Probed static tracepoint " |
7270 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7271 | b->static_trace_marker_id); |
7272 | } | |
7273 | else | |
3e43a32a MS |
7274 | warning (_("Couldn't determine the static " |
7275 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7276 | } |
7277 | ||
6c95b8df | 7278 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7279 | && (b->type == bp_breakpoint |
7280 | || b->type == bp_hardware_breakpoint)) | |
7281 | b->enable_state = bp_startup_disabled; | |
7282 | ||
0d381245 VP |
7283 | loc = b->loc; |
7284 | } | |
7285 | else | |
018d34a4 | 7286 | { |
39d61571 | 7287 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7288 | } |
7289 | ||
514f746b AR |
7290 | if (bp_loc_is_permanent (loc)) |
7291 | make_breakpoint_permanent (b); | |
7292 | ||
0d381245 VP |
7293 | if (b->cond_string) |
7294 | { | |
7295 | char *arg = b->cond_string; | |
d32a6982 | 7296 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7297 | if (*arg) |
db107f19 | 7298 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7299 | } |
0d381245 | 7300 | } |
018d34a4 VP |
7301 | |
7302 | if (addr_string) | |
7303 | b->addr_string = addr_string; | |
7304 | else | |
7305 | /* addr_string has to be used or breakpoint_re_set will delete | |
7306 | me. */ | |
5af949e3 UW |
7307 | b->addr_string |
7308 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7309 | |
604133b5 | 7310 | b->ops = ops; |
84f4c1fe PM |
7311 | if (internal) |
7312 | /* Do not mention breakpoints with a negative number, but do | |
7313 | notify observers. */ | |
7314 | observer_notify_breakpoint_created (b->number); | |
7315 | else | |
7316 | mention (b); | |
018d34a4 VP |
7317 | } |
7318 | ||
ed0616c6 VP |
7319 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7320 | elements to fill the void space. */ | |
2c0b251b PA |
7321 | static void |
7322 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7323 | { |
7324 | int i = index_to_remove+1; | |
7325 | int last_index = sal->nelts-1; | |
7326 | ||
7327 | for (;i <= last_index; ++i) | |
7328 | sal->sals[i-1] = sal->sals[i]; | |
7329 | ||
7330 | --(sal->nelts); | |
7331 | } | |
7332 | ||
6c95b8df PA |
7333 | /* If appropriate, obtains all sals that correspond to the same file |
7334 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7335 | will want to set a breakpoint at foo.c:line, and not really care | |
7336 | about program spaces. This is done only if SAL does not have | |
7337 | explicit PC and has line and file information. If we got just a | |
7338 | single expanded sal, return the original. | |
ed0616c6 | 7339 | |
6c95b8df PA |
7340 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7341 | which the name of enclosing function is different from SAL. This | |
7342 | makes sure that if we have breakpoint originally set in template | |
7343 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7344 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7345 | |
2c0b251b | 7346 | static struct symtabs_and_lines |
ed0616c6 VP |
7347 | expand_line_sal_maybe (struct symtab_and_line sal) |
7348 | { | |
7349 | struct symtabs_and_lines expanded; | |
7350 | CORE_ADDR original_pc = sal.pc; | |
7351 | char *original_function = NULL; | |
7352 | int found; | |
7353 | int i; | |
6c95b8df | 7354 | struct cleanup *old_chain; |
ed0616c6 VP |
7355 | |
7356 | /* If we have explicit pc, don't expand. | |
7357 | If we have no line number, we can't expand. */ | |
7358 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7359 | { | |
7360 | expanded.nelts = 1; | |
7361 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7362 | expanded.sals[0] = sal; | |
7363 | return expanded; | |
7364 | } | |
7365 | ||
7366 | sal.pc = 0; | |
6c95b8df PA |
7367 | |
7368 | old_chain = save_current_space_and_thread (); | |
7369 | ||
7370 | switch_to_program_space_and_thread (sal.pspace); | |
7371 | ||
ed0616c6 | 7372 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7373 | |
7374 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7375 | expanded = expand_line_sal (sal); |
6c95b8df | 7376 | |
ed0616c6 VP |
7377 | if (expanded.nelts == 1) |
7378 | { | |
3dba1c98 JB |
7379 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7380 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7381 | xfree (expanded.sals); |
7382 | expanded.nelts = 1; | |
7383 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7384 | sal.pc = original_pc; | |
7385 | expanded.sals[0] = sal; | |
3dba1c98 | 7386 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7387 | do_cleanups (old_chain); |
ed0616c6 VP |
7388 | return expanded; |
7389 | } | |
7390 | ||
7391 | if (!sal.explicit_line) | |
7392 | { | |
7393 | CORE_ADDR func_addr, func_end; | |
7394 | for (i = 0; i < expanded.nelts; ++i) | |
7395 | { | |
7396 | CORE_ADDR pc = expanded.sals[i].pc; | |
7397 | char *this_function; | |
6c95b8df PA |
7398 | |
7399 | /* We need to switch threads as well since we're about to | |
7400 | read memory. */ | |
7401 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7402 | ||
ed0616c6 VP |
7403 | if (find_pc_partial_function (pc, &this_function, |
7404 | &func_addr, &func_end)) | |
7405 | { | |
059fb39f PM |
7406 | if (this_function |
7407 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7408 | { |
7409 | remove_sal (&expanded, i); | |
7410 | --i; | |
7411 | } | |
ed0616c6 VP |
7412 | } |
7413 | } | |
7414 | } | |
059acae7 UW |
7415 | |
7416 | /* Skip the function prologue if necessary. */ | |
7417 | for (i = 0; i < expanded.nelts; ++i) | |
7418 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7419 | |
6c95b8df PA |
7420 | do_cleanups (old_chain); |
7421 | ||
ed0616c6 VP |
7422 | if (expanded.nelts <= 1) |
7423 | { | |
4a64f543 MS |
7424 | /* This is un ugly workaround. If we get zero expanded sals |
7425 | then something is really wrong. Fix that by returning the | |
7426 | original sal. */ | |
7427 | ||
ed0616c6 VP |
7428 | xfree (expanded.sals); |
7429 | expanded.nelts = 1; | |
7430 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7431 | sal.pc = original_pc; | |
7432 | expanded.sals[0] = sal; | |
7433 | return expanded; | |
7434 | } | |
7435 | ||
7436 | if (original_pc) | |
7437 | { | |
7438 | found = 0; | |
7439 | for (i = 0; i < expanded.nelts; ++i) | |
7440 | if (expanded.sals[i].pc == original_pc) | |
7441 | { | |
7442 | found = 1; | |
7443 | break; | |
7444 | } | |
7445 | gdb_assert (found); | |
7446 | } | |
7447 | ||
7448 | return expanded; | |
7449 | } | |
7450 | ||
018d34a4 VP |
7451 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7452 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7453 | value. COND_STRING, if not NULL, specified the condition to be | |
7454 | used for all breakpoints. Essentially the only case where | |
7455 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7456 | function. In that case, it's still not possible to specify | |
7457 | separate conditions for different overloaded functions, so | |
7458 | we take just a single condition string. | |
7459 | ||
c3f6f71d | 7460 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7461 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7462 | array contents). If the function fails (error() is called), the |
7463 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7464 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7465 | |
7466 | static void | |
8cdf0e15 VP |
7467 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7468 | struct symtabs_and_lines sals, char **addr_string, | |
7469 | char *cond_string, | |
7470 | enum bptype type, enum bpdisp disposition, | |
7471 | int thread, int task, int ignore_count, | |
7472 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7473 | int enabled, int internal) |
c906108c | 7474 | { |
018d34a4 | 7475 | int i; |
cc59ec59 | 7476 | |
018d34a4 | 7477 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7478 | { |
ed0616c6 VP |
7479 | struct symtabs_and_lines expanded = |
7480 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7481 | |
8cdf0e15 VP |
7482 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7483 | cond_string, type, disposition, | |
84f4c1fe PM |
7484 | thread, task, ignore_count, ops, |
7485 | from_tty, enabled, internal); | |
c3f6f71d | 7486 | } |
c3f6f71d | 7487 | } |
c906108c | 7488 | |
9998af43 | 7489 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7490 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7491 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7492 | address strings. ADDRESS points to the end of the SAL. |
7493 | ||
7494 | The array and the line spec strings are allocated on the heap, it is | |
7495 | the caller's responsibility to free them. */ | |
c906108c | 7496 | |
b9362cc7 | 7497 | static void |
c3f6f71d JM |
7498 | parse_breakpoint_sals (char **address, |
7499 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7500 | char ***addr_string, |
7501 | int *not_found_ptr) | |
c3f6f71d JM |
7502 | { |
7503 | char *addr_start = *address; | |
cc59ec59 | 7504 | |
c3f6f71d JM |
7505 | *addr_string = NULL; |
7506 | /* If no arg given, or if first arg is 'if ', use the default | |
4a64f543 | 7507 | breakpoint. */ |
c3f6f71d JM |
7508 | if ((*address) == NULL |
7509 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7510 | { |
7511 | if (default_breakpoint_valid) | |
7512 | { | |
c3f6f71d | 7513 | struct symtab_and_line sal; |
cc59ec59 | 7514 | |
4a64f543 | 7515 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7516 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7517 | xmalloc (sizeof (struct symtab_and_line)); |
7518 | sal.pc = default_breakpoint_address; | |
7519 | sal.line = default_breakpoint_line; | |
7520 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7521 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7522 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7523 | |
4a64f543 MS |
7524 | /* "break" without arguments is equivalent to "break *PC" |
7525 | where PC is the default_breakpoint_address. So make sure | |
7526 | to set sal.explicit_pc to prevent GDB from trying to | |
7527 | expand the list of sals to include all other instances | |
7528 | with the same symtab and line. */ | |
00903456 JK |
7529 | sal.explicit_pc = 1; |
7530 | ||
c3f6f71d JM |
7531 | sals->sals[0] = sal; |
7532 | sals->nelts = 1; | |
c906108c SS |
7533 | } |
7534 | else | |
8a3fe4f8 | 7535 | error (_("No default breakpoint address now.")); |
c906108c SS |
7536 | } |
7537 | else | |
7538 | { | |
c906108c | 7539 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7540 | current_source_symtab (which is decode_line_1's default). |
7541 | This should produce the results we want almost all of the | |
7542 | time while leaving default_breakpoint_* alone. | |
7543 | ||
1aeae86e AF |
7544 | ObjC: However, don't match an Objective-C method name which |
7545 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7546 | |
c214a6fd | 7547 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7548 | |
c906108c | 7549 | if (default_breakpoint_valid |
0378c332 | 7550 | && (!cursal.symtab |
1aeae86e AF |
7551 | || ((strchr ("+-", (*address)[0]) != NULL) |
7552 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7553 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7554 | default_breakpoint_line, addr_string, |
7555 | not_found_ptr); | |
c906108c | 7556 | else |
0101ce28 JJ |
7557 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7558 | addr_string, not_found_ptr); | |
c906108c | 7559 | } |
4a64f543 | 7560 | /* For any SAL that didn't have a canonical string, fill one in. */ |
c3f6f71d JM |
7561 | if (sals->nelts > 0 && *addr_string == NULL) |
7562 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7563 | if (addr_start != (*address)) | |
c906108c | 7564 | { |
c3f6f71d | 7565 | int i; |
cc59ec59 | 7566 | |
c3f6f71d | 7567 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7568 | { |
4a64f543 | 7569 | /* Add the string if not present. */ |
c3f6f71d | 7570 | if ((*addr_string)[i] == NULL) |
cc59ec59 MS |
7571 | (*addr_string)[i] = savestring (addr_start, |
7572 | (*address) - addr_start); | |
c906108c SS |
7573 | } |
7574 | } | |
c3f6f71d | 7575 | } |
c906108c | 7576 | |
c906108c | 7577 | |
c3f6f71d | 7578 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7579 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7580 | |
b9362cc7 | 7581 | static void |
23e7acfb | 7582 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7583 | { |
7584 | int i; | |
cc59ec59 | 7585 | |
c3f6f71d | 7586 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7587 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7588 | } |
7589 | ||
7a697b8d SS |
7590 | /* Fast tracepoints may have restrictions on valid locations. For |
7591 | instance, a fast tracepoint using a jump instead of a trap will | |
7592 | likely have to overwrite more bytes than a trap would, and so can | |
7593 | only be placed where the instruction is longer than the jump, or a | |
7594 | multi-instruction sequence does not have a jump into the middle of | |
7595 | it, etc. */ | |
7596 | ||
7597 | static void | |
7598 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7599 | struct symtabs_and_lines *sals) | |
7600 | { | |
7601 | int i, rslt; | |
7602 | struct symtab_and_line *sal; | |
7603 | char *msg; | |
7604 | struct cleanup *old_chain; | |
7605 | ||
7606 | for (i = 0; i < sals->nelts; i++) | |
7607 | { | |
7608 | sal = &sals->sals[i]; | |
7609 | ||
7610 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7611 | NULL, &msg); | |
7612 | old_chain = make_cleanup (xfree, msg); | |
7613 | ||
7614 | if (!rslt) | |
7615 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7616 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7617 | ||
7618 | do_cleanups (old_chain); | |
7619 | } | |
7620 | } | |
7621 | ||
05ff989b | 7622 | static void |
0101ce28 JJ |
7623 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7624 | { | |
7625 | struct captured_parse_breakpoint_args *args = data; | |
7626 | ||
7627 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7628 | args->not_found_ptr); | |
0101ce28 JJ |
7629 | } |
7630 | ||
018d34a4 VP |
7631 | /* Given TOK, a string specification of condition and thread, as |
7632 | accepted by the 'break' command, extract the condition | |
7633 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7634 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7635 | If no condition is found, *COND_STRING is set to NULL. |
7636 | If no thread is found, *THREAD is set to -1. */ | |
7637 | static void | |
7638 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7639 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7640 | { |
7641 | *cond_string = NULL; | |
7642 | *thread = -1; | |
7643 | while (tok && *tok) | |
7644 | { | |
7645 | char *end_tok; | |
7646 | int toklen; | |
7647 | char *cond_start = NULL; | |
7648 | char *cond_end = NULL; | |
cc59ec59 | 7649 | |
e9cafbcc | 7650 | tok = skip_spaces (tok); |
018d34a4 | 7651 | |
e9cafbcc | 7652 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7653 | |
7654 | toklen = end_tok - tok; | |
7655 | ||
7656 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7657 | { | |
f7545552 TT |
7658 | struct expression *expr; |
7659 | ||
018d34a4 | 7660 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7661 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7662 | xfree (expr); | |
018d34a4 VP |
7663 | cond_end = tok; |
7664 | *cond_string = savestring (cond_start, | |
7665 | cond_end - cond_start); | |
7666 | } | |
7667 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7668 | { | |
7669 | char *tmptok; | |
7670 | ||
7671 | tok = end_tok + 1; | |
7672 | tmptok = tok; | |
7673 | *thread = strtol (tok, &tok, 0); | |
7674 | if (tok == tmptok) | |
7675 | error (_("Junk after thread keyword.")); | |
7676 | if (!valid_thread_id (*thread)) | |
7677 | error (_("Unknown thread %d."), *thread); | |
7678 | } | |
4a306c9a JB |
7679 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7680 | { | |
7681 | char *tmptok; | |
7682 | ||
7683 | tok = end_tok + 1; | |
7684 | tmptok = tok; | |
7685 | *task = strtol (tok, &tok, 0); | |
7686 | if (tok == tmptok) | |
7687 | error (_("Junk after task keyword.")); | |
7688 | if (!valid_task_id (*task)) | |
b6199126 | 7689 | error (_("Unknown task %d."), *task); |
4a306c9a | 7690 | } |
018d34a4 VP |
7691 | else |
7692 | error (_("Junk at end of arguments.")); | |
7693 | } | |
7694 | } | |
7695 | ||
0fb4aa4b PA |
7696 | /* Decode a static tracepoint marker spec. */ |
7697 | ||
7698 | static struct symtabs_and_lines | |
7699 | decode_static_tracepoint_spec (char **arg_p) | |
7700 | { | |
7701 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7702 | struct symtabs_and_lines sals; | |
7703 | struct symtab_and_line sal; | |
7704 | struct symbol *sym; | |
7705 | struct cleanup *old_chain; | |
7706 | char *p = &(*arg_p)[3]; | |
7707 | char *endp; | |
7708 | char *marker_str; | |
7709 | int i; | |
7710 | ||
e9cafbcc | 7711 | p = skip_spaces (p); |
0fb4aa4b | 7712 | |
e9cafbcc | 7713 | endp = skip_to_space (p); |
0fb4aa4b PA |
7714 | |
7715 | marker_str = savestring (p, endp - p); | |
7716 | old_chain = make_cleanup (xfree, marker_str); | |
7717 | ||
7718 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7719 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7720 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7721 | ||
7722 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7723 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7724 | ||
7725 | for (i = 0; i < sals.nelts; i++) | |
7726 | { | |
7727 | struct static_tracepoint_marker *marker; | |
7728 | ||
7729 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7730 | ||
7731 | init_sal (&sals.sals[i]); | |
7732 | ||
7733 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7734 | sals.sals[i].pc = marker->address; | |
7735 | ||
7736 | release_static_tracepoint_marker (marker); | |
7737 | } | |
7738 | ||
7739 | do_cleanups (old_chain); | |
7740 | ||
7741 | *arg_p = endp; | |
7742 | return sals; | |
7743 | } | |
7744 | ||
fd9b8c24 PA |
7745 | /* Set a breakpoint. This function is shared between CLI and MI |
7746 | functions for setting a breakpoint. This function has two major | |
7747 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7748 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7749 | breakpoint location, address and thread. Otherwise, ARG is just |
7750 | the location of breakpoint, with condition and thread specified by | |
7751 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7752 | the breakpoint number will be allocated from the internal | |
7753 | breakpoint count. Returns true if any breakpoint was created; | |
7754 | false otherwise. */ | |
0101ce28 | 7755 | |
8cdf0e15 VP |
7756 | int |
7757 | create_breakpoint (struct gdbarch *gdbarch, | |
7758 | char *arg, char *cond_string, int thread, | |
7759 | int parse_condition_and_thread, | |
0fb4aa4b | 7760 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7761 | int ignore_count, |
7762 | enum auto_boolean pending_break_support, | |
7763 | struct breakpoint_ops *ops, | |
84f4c1fe | 7764 | int from_tty, int enabled, int internal) |
c3f6f71d | 7765 | { |
71fff37b | 7766 | struct gdb_exception e; |
c3f6f71d | 7767 | struct symtabs_and_lines sals; |
0101ce28 | 7768 | struct symtab_and_line pending_sal; |
0101ce28 | 7769 | char *copy_arg; |
c3f6f71d JM |
7770 | char *addr_start = arg; |
7771 | char **addr_string; | |
7772 | struct cleanup *old_chain; | |
80c99de1 | 7773 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7774 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7775 | int i; |
0101ce28 | 7776 | int pending = 0; |
0101ce28 | 7777 | int not_found = 0; |
4a306c9a | 7778 | int task = 0; |
86b17b60 | 7779 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7780 | |
c3f6f71d JM |
7781 | sals.sals = NULL; |
7782 | sals.nelts = 0; | |
7783 | addr_string = NULL; | |
c3f6f71d | 7784 | |
0101ce28 JJ |
7785 | parse_args.arg_p = &arg; |
7786 | parse_args.sals_p = &sals; | |
7787 | parse_args.addr_string_p = &addr_string; | |
7788 | parse_args.not_found_ptr = ¬_found; | |
7789 | ||
0fb4aa4b PA |
7790 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7791 | { | |
7792 | int i; | |
7793 | ||
7794 | sals = decode_static_tracepoint_spec (&arg); | |
7795 | ||
7796 | copy_arg = savestring (addr_start, arg - addr_start); | |
7797 | addr_string = xcalloc (sals.nelts, sizeof (char **)); | |
7798 | for (i = 0; i < sals.nelts; i++) | |
7799 | addr_string[i] = xstrdup (copy_arg); | |
7800 | goto done; | |
7801 | } | |
7802 | ||
05ff989b AC |
7803 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7804 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7805 | |
7806 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7807 | switch (e.reason) |
0101ce28 | 7808 | { |
05ff989b | 7809 | case RETURN_QUIT: |
98deb0da | 7810 | throw_exception (e); |
05ff989b AC |
7811 | case RETURN_ERROR: |
7812 | switch (e.error) | |
0101ce28 | 7813 | { |
05ff989b | 7814 | case NOT_FOUND_ERROR: |
0101ce28 | 7815 | |
05ff989b AC |
7816 | /* If pending breakpoint support is turned off, throw |
7817 | error. */ | |
fa8d40ab JJ |
7818 | |
7819 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7820 | throw_exception (e); |
7821 | ||
7822 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7823 | |
05ff989b AC |
7824 | /* If pending breakpoint support is auto query and the user |
7825 | selects no, then simply return the error code. */ | |
059fb39f | 7826 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7827 | && !nquery (_("Make breakpoint pending on " |
7828 | "future shared library load? "))) | |
fd9b8c24 | 7829 | return 0; |
fa8d40ab | 7830 | |
05ff989b AC |
7831 | /* At this point, either the user was queried about setting |
7832 | a pending breakpoint and selected yes, or pending | |
7833 | breakpoint behavior is on and thus a pending breakpoint | |
7834 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7835 | copy_arg = xstrdup (addr_start); |
7836 | addr_string = ©_arg; | |
7837 | sals.nelts = 1; | |
7838 | sals.sals = &pending_sal; | |
7839 | pending_sal.pc = 0; | |
7840 | pending = 1; | |
05ff989b AC |
7841 | break; |
7842 | default: | |
98deb0da | 7843 | throw_exception (e); |
0101ce28 | 7844 | } |
2abae994 | 7845 | break; |
05ff989b AC |
7846 | default: |
7847 | if (!sals.nelts) | |
fd9b8c24 | 7848 | return 0; |
0101ce28 | 7849 | } |
c3f6f71d | 7850 | |
0fb4aa4b PA |
7851 | done: |
7852 | ||
4a64f543 | 7853 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7854 | old_chain = make_cleanup (null_cleanup, 0); |
7855 | ||
0101ce28 JJ |
7856 | if (!pending) |
7857 | { | |
7858 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7859 | make_cleanup (xfree, sals.sals); | |
7860 | ||
4a64f543 | 7861 | /* Cleanup the addr_string array but not its contents. */ |
0101ce28 JJ |
7862 | make_cleanup (xfree, addr_string); |
7863 | } | |
c3f6f71d | 7864 | |
c3f6f71d JM |
7865 | /* ----------------------------- SNIP ----------------------------- |
7866 | Anything added to the cleanup chain beyond this point is assumed | |
7867 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7868 | then the memory is not reclaimed. */ |
7869 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7870 | |
7871 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7872 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7873 | for (i = 0; i < sals.nelts; i++) |
7874 | { | |
7875 | if (addr_string[i] != NULL) | |
b8c9b27d | 7876 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7877 | } |
7878 | ||
7879 | /* Resolve all line numbers to PC's and verify that the addresses | |
7880 | are ok for the target. */ | |
0101ce28 | 7881 | if (!pending) |
23e7acfb | 7882 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7883 | |
7a697b8d SS |
7884 | /* Fast tracepoints may have additional restrictions on location. */ |
7885 | if (type_wanted == bp_fast_tracepoint) | |
7886 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7887 | ||
c3f6f71d JM |
7888 | /* Verify that condition can be parsed, before setting any |
7889 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7890 | breakpoint. */ |
0101ce28 | 7891 | if (!pending) |
c3f6f71d | 7892 | { |
2f069f6f | 7893 | if (parse_condition_and_thread) |
72b2ff0e VP |
7894 | { |
7895 | /* Here we only parse 'arg' to separate condition | |
7896 | from thread number, so parsing in context of first | |
7897 | sal is OK. When setting the breakpoint we'll | |
7898 | re-parse it in context of each sal. */ | |
7899 | cond_string = NULL; | |
7900 | thread = -1; | |
4a306c9a JB |
7901 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7902 | &thread, &task); | |
72b2ff0e VP |
7903 | if (cond_string) |
7904 | make_cleanup (xfree, cond_string); | |
7905 | } | |
2f069f6f | 7906 | else |
72b2ff0e VP |
7907 | { |
7908 | /* Create a private copy of condition string. */ | |
7909 | if (cond_string) | |
7910 | { | |
7911 | cond_string = xstrdup (cond_string); | |
7912 | make_cleanup (xfree, cond_string); | |
7913 | } | |
7914 | } | |
0fb4aa4b PA |
7915 | |
7916 | /* If the user is creating a static tracepoint by marker id | |
7917 | (strace -m MARKER_ID), then store the sals index, so that | |
7918 | breakpoint_re_set can try to match up which of the newly | |
7919 | found markers corresponds to this one, and, don't try to | |
7920 | expand multiple locations for each sal, given than SALS | |
7921 | already should contain all sals for MARKER_ID. */ | |
7922 | if (type_wanted == bp_static_tracepoint | |
7923 | && is_marker_spec (addr_string[0])) | |
7924 | { | |
7925 | int i; | |
7926 | ||
7927 | for (i = 0; i < sals.nelts; ++i) | |
7928 | { | |
7929 | struct symtabs_and_lines expanded; | |
7930 | struct breakpoint *tp; | |
7931 | struct cleanup *old_chain; | |
7932 | ||
7933 | expanded.nelts = 1; | |
7934 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7935 | expanded.sals[0] = sals.sals[i]; | |
7936 | old_chain = make_cleanup (xfree, expanded.sals); | |
7937 | ||
7938 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], | |
7939 | cond_string, type_wanted, | |
7940 | tempflag ? disp_del : disp_donttouch, | |
7941 | thread, task, ignore_count, ops, | |
84f4c1fe | 7942 | from_tty, enabled, internal); |
0fb4aa4b PA |
7943 | |
7944 | do_cleanups (old_chain); | |
7945 | ||
7946 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
7947 | if (internal) |
7948 | tp = get_breakpoint (internal_breakpoint_number); | |
7949 | else | |
7950 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
7951 | gdb_assert (tp != NULL); |
7952 | ||
7953 | /* Given that its possible to have multiple markers with | |
7954 | the same string id, if the user is creating a static | |
7955 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7956 | store the sals index, so that breakpoint_re_set can | |
7957 | try to match up which of the newly found markers | |
7958 | corresponds to this one */ | |
7959 | tp->static_trace_marker_id_idx = i; | |
7960 | } | |
7961 | } | |
7962 | else | |
7963 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, | |
3e43a32a MS |
7964 | type_wanted, |
7965 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 7966 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 7967 | enabled, internal); |
c906108c | 7968 | } |
0101ce28 JJ |
7969 | else |
7970 | { | |
0101ce28 JJ |
7971 | struct breakpoint *b; |
7972 | ||
0101ce28 JJ |
7973 | make_cleanup (xfree, copy_arg); |
7974 | ||
a6d9a66e | 7975 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 7976 | set_breakpoint_number (internal, b); |
72b2ff0e | 7977 | b->thread = -1; |
018d34a4 | 7978 | b->addr_string = addr_string[0]; |
72b2ff0e | 7979 | b->cond_string = NULL; |
0101ce28 | 7980 | b->ignore_count = ignore_count; |
0101ce28 | 7981 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7982 | b->condition_not_parsed = 1; |
604133b5 | 7983 | b->ops = ops; |
41447f92 | 7984 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7985 | b->pspace = current_program_space; |
84f4c1fe | 7986 | b->py_bp_object = NULL; |
74960c60 | 7987 | |
6c95b8df | 7988 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7989 | && (b->type == bp_breakpoint |
7990 | || b->type == bp_hardware_breakpoint)) | |
7991 | b->enable_state = bp_startup_disabled; | |
7992 | ||
84f4c1fe PM |
7993 | if (internal) |
7994 | /* Do not mention breakpoints with a negative number, | |
7995 | but do notify observers. */ | |
7996 | observer_notify_breakpoint_created (b->number); | |
7997 | else | |
7998 | mention (b); | |
0101ce28 JJ |
7999 | } |
8000 | ||
c3f6f71d | 8001 | if (sals.nelts > 1) |
95a42b64 | 8002 | { |
3e43a32a MS |
8003 | warning (_("Multiple breakpoints were set.\nUse the " |
8004 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8005 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8006 | } |
8007 | ||
80c99de1 PA |
8008 | /* That's it. Discard the cleanups for data inserted into the |
8009 | breakpoint. */ | |
8010 | discard_cleanups (bkpt_chain); | |
8011 | /* But cleanup everything else. */ | |
c3f6f71d | 8012 | do_cleanups (old_chain); |
217dc9e2 | 8013 | |
80c99de1 | 8014 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 8015 | update_global_location_list (1); |
fd9b8c24 PA |
8016 | |
8017 | return 1; | |
c3f6f71d | 8018 | } |
c906108c | 8019 | |
72b2ff0e VP |
8020 | /* Set a breakpoint. |
8021 | ARG is a string describing breakpoint address, | |
8022 | condition, and thread. | |
8023 | FLAG specifies if a breakpoint is hardware on, | |
8024 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8025 | and BP_TEMPFLAG. */ | |
8026 | ||
98deb0da | 8027 | static void |
72b2ff0e | 8028 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 8029 | { |
72b2ff0e | 8030 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8031 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8032 | ? bp_hardware_breakpoint | |
8033 | : bp_breakpoint); | |
c3f6f71d | 8034 | |
8cdf0e15 VP |
8035 | create_breakpoint (get_current_arch (), |
8036 | arg, | |
8037 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 8038 | tempflag, type_wanted, |
8cdf0e15 VP |
8039 | 0 /* Ignore count */, |
8040 | pending_break_support, | |
8041 | NULL /* breakpoint_ops */, | |
8042 | from_tty, | |
84f4c1fe PM |
8043 | 1 /* enabled */, |
8044 | 0 /* internal */); | |
c906108c SS |
8045 | } |
8046 | ||
72b2ff0e | 8047 | |
c906108c SS |
8048 | /* Helper function for break_command_1 and disassemble_command. */ |
8049 | ||
8050 | void | |
fba45db2 | 8051 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8052 | { |
8053 | CORE_ADDR pc; | |
8054 | ||
8055 | if (sal->pc == 0 && sal->symtab != NULL) | |
8056 | { | |
8057 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 8058 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
8059 | sal->line, sal->symtab->filename); |
8060 | sal->pc = pc; | |
6a048695 | 8061 | |
4a64f543 MS |
8062 | /* If this SAL corresponds to a breakpoint inserted using a line |
8063 | number, then skip the function prologue if necessary. */ | |
6a048695 | 8064 | if (sal->explicit_line) |
059acae7 | 8065 | skip_prologue_sal (sal); |
c906108c SS |
8066 | } |
8067 | ||
8068 | if (sal->section == 0 && sal->symtab != NULL) | |
8069 | { | |
8070 | struct blockvector *bv; | |
c5aa993b JM |
8071 | struct block *b; |
8072 | struct symbol *sym; | |
c906108c | 8073 | |
801e3a5b | 8074 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
8075 | if (bv != NULL) |
8076 | { | |
7f0df278 | 8077 | sym = block_linkage_function (b); |
c906108c SS |
8078 | if (sym != NULL) |
8079 | { | |
8080 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 8081 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
8082 | } |
8083 | else | |
8084 | { | |
4a64f543 MS |
8085 | /* It really is worthwhile to have the section, so we'll |
8086 | just have to look harder. This case can be executed | |
8087 | if we have line numbers but no functions (as can | |
8088 | happen in assembly source). */ | |
c906108c | 8089 | |
c5aa993b | 8090 | struct minimal_symbol *msym; |
6c95b8df PA |
8091 | struct cleanup *old_chain = save_current_space_and_thread (); |
8092 | ||
8093 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8094 | |
8095 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8096 | if (msym) | |
714835d5 | 8097 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8098 | |
8099 | do_cleanups (old_chain); | |
c906108c SS |
8100 | } |
8101 | } | |
8102 | } | |
8103 | } | |
8104 | ||
8105 | void | |
fba45db2 | 8106 | break_command (char *arg, int from_tty) |
c906108c | 8107 | { |
db107f19 | 8108 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8109 | } |
8110 | ||
c906108c | 8111 | void |
fba45db2 | 8112 | tbreak_command (char *arg, int from_tty) |
c906108c | 8113 | { |
db107f19 | 8114 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8115 | } |
8116 | ||
c906108c | 8117 | static void |
fba45db2 | 8118 | hbreak_command (char *arg, int from_tty) |
c906108c | 8119 | { |
db107f19 | 8120 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8121 | } |
8122 | ||
8123 | static void | |
fba45db2 | 8124 | thbreak_command (char *arg, int from_tty) |
c906108c | 8125 | { |
db107f19 | 8126 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8127 | } |
8128 | ||
8129 | static void | |
fba45db2 | 8130 | stop_command (char *arg, int from_tty) |
c906108c | 8131 | { |
a3f17187 | 8132 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8133 | Usage: stop in <function | address>\n\ |
a3f17187 | 8134 | stop at <line>\n")); |
c906108c SS |
8135 | } |
8136 | ||
8137 | static void | |
fba45db2 | 8138 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8139 | { |
8140 | int badInput = 0; | |
8141 | ||
c5aa993b | 8142 | if (arg == (char *) NULL) |
c906108c SS |
8143 | badInput = 1; |
8144 | else if (*arg != '*') | |
8145 | { | |
8146 | char *argptr = arg; | |
8147 | int hasColon = 0; | |
8148 | ||
4a64f543 | 8149 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8150 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8151 | function/method name. */ |
c906108c | 8152 | while (*argptr && !hasColon) |
c5aa993b JM |
8153 | { |
8154 | hasColon = (*argptr == ':'); | |
8155 | argptr++; | |
8156 | } | |
c906108c SS |
8157 | |
8158 | if (hasColon) | |
c5aa993b | 8159 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8160 | else |
c5aa993b | 8161 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8162 | } |
8163 | ||
8164 | if (badInput) | |
a3f17187 | 8165 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8166 | else |
db107f19 | 8167 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8168 | } |
8169 | ||
8170 | static void | |
fba45db2 | 8171 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8172 | { |
8173 | int badInput = 0; | |
8174 | ||
c5aa993b | 8175 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8176 | badInput = 1; |
8177 | else | |
8178 | { | |
8179 | char *argptr = arg; | |
8180 | int hasColon = 0; | |
8181 | ||
4a64f543 MS |
8182 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8183 | it is probably a line number. */ | |
c906108c | 8184 | while (*argptr && !hasColon) |
c5aa993b JM |
8185 | { |
8186 | hasColon = (*argptr == ':'); | |
8187 | argptr++; | |
8188 | } | |
c906108c SS |
8189 | |
8190 | if (hasColon) | |
c5aa993b | 8191 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8192 | else |
c5aa993b | 8193 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8194 | } |
8195 | ||
8196 | if (badInput) | |
a3f17187 | 8197 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8198 | else |
db107f19 | 8199 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8200 | } |
8201 | ||
4a64f543 MS |
8202 | /* Return non-zero if EXP is verified as constant. Returned zero |
8203 | means EXP is variable. Also the constant detection may fail for | |
8204 | some constant expressions and in such case still falsely return | |
8205 | zero. */ | |
65d79d4b SDJ |
8206 | static int |
8207 | watchpoint_exp_is_const (const struct expression *exp) | |
8208 | { | |
8209 | int i = exp->nelts; | |
8210 | ||
8211 | while (i > 0) | |
8212 | { | |
8213 | int oplenp, argsp; | |
8214 | ||
8215 | /* We are only interested in the descriptor of each element. */ | |
8216 | operator_length (exp, i, &oplenp, &argsp); | |
8217 | i -= oplenp; | |
8218 | ||
8219 | switch (exp->elts[i].opcode) | |
8220 | { | |
8221 | case BINOP_ADD: | |
8222 | case BINOP_SUB: | |
8223 | case BINOP_MUL: | |
8224 | case BINOP_DIV: | |
8225 | case BINOP_REM: | |
8226 | case BINOP_MOD: | |
8227 | case BINOP_LSH: | |
8228 | case BINOP_RSH: | |
8229 | case BINOP_LOGICAL_AND: | |
8230 | case BINOP_LOGICAL_OR: | |
8231 | case BINOP_BITWISE_AND: | |
8232 | case BINOP_BITWISE_IOR: | |
8233 | case BINOP_BITWISE_XOR: | |
8234 | case BINOP_EQUAL: | |
8235 | case BINOP_NOTEQUAL: | |
8236 | case BINOP_LESS: | |
8237 | case BINOP_GTR: | |
8238 | case BINOP_LEQ: | |
8239 | case BINOP_GEQ: | |
8240 | case BINOP_REPEAT: | |
8241 | case BINOP_COMMA: | |
8242 | case BINOP_EXP: | |
8243 | case BINOP_MIN: | |
8244 | case BINOP_MAX: | |
8245 | case BINOP_INTDIV: | |
8246 | case BINOP_CONCAT: | |
8247 | case BINOP_IN: | |
8248 | case BINOP_RANGE: | |
8249 | case TERNOP_COND: | |
8250 | case TERNOP_SLICE: | |
8251 | case TERNOP_SLICE_COUNT: | |
8252 | ||
8253 | case OP_LONG: | |
8254 | case OP_DOUBLE: | |
8255 | case OP_DECFLOAT: | |
8256 | case OP_LAST: | |
8257 | case OP_COMPLEX: | |
8258 | case OP_STRING: | |
8259 | case OP_BITSTRING: | |
8260 | case OP_ARRAY: | |
8261 | case OP_TYPE: | |
8262 | case OP_NAME: | |
8263 | case OP_OBJC_NSSTRING: | |
8264 | ||
8265 | case UNOP_NEG: | |
8266 | case UNOP_LOGICAL_NOT: | |
8267 | case UNOP_COMPLEMENT: | |
8268 | case UNOP_ADDR: | |
8269 | case UNOP_HIGH: | |
4a64f543 MS |
8270 | /* Unary, binary and ternary operators: We have to check |
8271 | their operands. If they are constant, then so is the | |
8272 | result of that operation. For instance, if A and B are | |
8273 | determined to be constants, then so is "A + B". | |
8274 | ||
8275 | UNOP_IND is one exception to the rule above, because the | |
8276 | value of *ADDR is not necessarily a constant, even when | |
8277 | ADDR is. */ | |
65d79d4b SDJ |
8278 | break; |
8279 | ||
8280 | case OP_VAR_VALUE: | |
8281 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8282 | |
65d79d4b | 8283 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8284 | possible that a buggy compiler could mark a variable as |
8285 | constant even when it is not, and TYPE_CONST would return | |
8286 | true in this case, while SYMBOL_CLASS wouldn't. | |
8287 | ||
8288 | We also have to check for function symbols because they | |
8289 | are always constant. */ | |
65d79d4b SDJ |
8290 | { |
8291 | struct symbol *s = exp->elts[i + 2].symbol; | |
8292 | ||
8293 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8294 | && SYMBOL_CLASS (s) != LOC_CONST | |
8295 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8296 | return 0; | |
8297 | break; | |
8298 | } | |
8299 | ||
8300 | /* The default action is to return 0 because we are using | |
8301 | the optimistic approach here: If we don't know something, | |
8302 | then it is not a constant. */ | |
8303 | default: | |
8304 | return 0; | |
8305 | } | |
8306 | } | |
8307 | ||
8308 | return 1; | |
8309 | } | |
8310 | ||
77b06cd7 TJB |
8311 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8312 | ||
8313 | static int | |
8314 | insert_watchpoint (struct bp_location *bl) | |
8315 | { | |
e09342b5 TJB |
8316 | int length = bl->owner->exact? 1 : bl->length; |
8317 | ||
8318 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
8319 | bl->owner->cond_exp); | |
77b06cd7 TJB |
8320 | } |
8321 | ||
8322 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8323 | ||
8324 | static int | |
8325 | remove_watchpoint (struct bp_location *bl) | |
8326 | { | |
e09342b5 TJB |
8327 | int length = bl->owner->exact? 1 : bl->length; |
8328 | ||
8329 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
8330 | bl->owner->cond_exp); | |
8331 | } | |
8332 | ||
8333 | /* Implement the "resources_needed" breakpoint_ops method for | |
8334 | hardware watchpoints. */ | |
8335 | ||
8336 | static int | |
8337 | resources_needed_watchpoint (const struct bp_location *bl) | |
8338 | { | |
90e4670f | 8339 | int length = bl->owner->exact? 1 : bl->length; |
e09342b5 | 8340 | |
90e4670f | 8341 | return target_region_ok_for_hw_watchpoint (bl->address, length); |
77b06cd7 TJB |
8342 | } |
8343 | ||
8344 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8345 | ||
8346 | static struct breakpoint_ops watchpoint_breakpoint_ops = | |
8347 | { | |
8348 | insert_watchpoint, | |
8349 | remove_watchpoint, | |
8350 | NULL, /* breakpoint_hit */ | |
e09342b5 | 8351 | resources_needed_watchpoint, |
77b06cd7 TJB |
8352 | NULL, /* print_it */ |
8353 | NULL, /* print_one */ | |
8354 | NULL, /* print_mention */ | |
8355 | NULL /* print_recreate */ | |
8356 | }; | |
8357 | ||
53a5351d JM |
8358 | /* accessflag: hw_write: watch write, |
8359 | hw_read: watch read, | |
8360 | hw_access: watch access (read or write) */ | |
c906108c | 8361 | static void |
84f4c1fe PM |
8362 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8363 | int just_location, int internal) | |
c906108c | 8364 | { |
d983da9c | 8365 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8366 | struct expression *exp; |
60e1c644 | 8367 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8368 | struct value *val, *mark, *result; |
c906108c | 8369 | struct frame_info *frame; |
c906108c SS |
8370 | char *exp_start = NULL; |
8371 | char *exp_end = NULL; | |
37e4754d | 8372 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8373 | int toklen; |
8374 | char *cond_start = NULL; | |
8375 | char *cond_end = NULL; | |
c906108c SS |
8376 | int i, other_type_used, target_resources_ok = 0; |
8377 | enum bptype bp_type; | |
e09342b5 | 8378 | int reg_cnt = 0; |
37e4754d | 8379 | int thread = -1; |
0cf6dd15 | 8380 | int pc = 0; |
c906108c | 8381 | |
37e4754d LM |
8382 | /* Make sure that we actually have parameters to parse. */ |
8383 | if (arg != NULL && arg[0] != '\0') | |
8384 | { | |
8385 | toklen = strlen (arg); /* Size of argument list. */ | |
8386 | ||
8387 | /* Points tok to the end of the argument list. */ | |
8388 | tok = arg + toklen - 1; | |
8389 | ||
4a64f543 MS |
8390 | /* Go backwards in the parameters list. Skip the last |
8391 | parameter. If we're expecting a 'thread <thread_num>' | |
8392 | parameter, this should be the thread identifier. */ | |
37e4754d LM |
8393 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8394 | tok--; | |
8395 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8396 | tok--; | |
8397 | ||
8398 | /* Points end_tok to the beginning of the last token. */ | |
8399 | id_tok_start = tok + 1; | |
8400 | ||
4a64f543 MS |
8401 | /* Go backwards in the parameters list. Skip one more |
8402 | parameter. If we're expecting a 'thread <thread_num>' | |
8403 | parameter, we should reach a "thread" token. */ | |
37e4754d LM |
8404 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8405 | tok--; | |
8406 | ||
8407 | end_tok = tok; | |
8408 | ||
8409 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8410 | tok--; | |
8411 | ||
8412 | /* Move the pointer forward to skip the whitespace and | |
8413 | calculate the length of the token. */ | |
8414 | tok++; | |
8415 | toklen = end_tok - tok; | |
8416 | ||
8417 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8418 | { | |
8419 | /* At this point we've found a "thread" token, which means | |
8420 | the user is trying to set a watchpoint that triggers | |
8421 | only in a specific thread. */ | |
8422 | char *endp; | |
8423 | ||
8424 | /* Extract the thread ID from the next token. */ | |
8425 | thread = strtol (id_tok_start, &endp, 0); | |
8426 | ||
8427 | /* Check if the user provided a valid numeric value for the | |
8428 | thread ID. */ | |
8429 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8430 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8431 | ||
8432 | /* Check if the thread actually exists. */ | |
8433 | if (!valid_thread_id (thread)) | |
8434 | error (_("Unknown thread %d."), thread); | |
8435 | ||
8436 | /* Truncate the string and get rid of the thread <thread_num> | |
8437 | parameter before the parameter list is parsed by the | |
8438 | evaluate_expression() function. */ | |
8439 | *tok = '\0'; | |
8440 | } | |
8441 | } | |
8442 | ||
8443 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8444 | innermost_block = NULL; |
8445 | exp_start = arg; | |
8446 | exp = parse_exp_1 (&arg, 0, 0); | |
8447 | exp_end = arg; | |
fa8a61dc TT |
8448 | /* Remove trailing whitespace from the expression before saving it. |
8449 | This makes the eventual display of the expression string a bit | |
8450 | prettier. */ | |
8451 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8452 | --exp_end; | |
8453 | ||
65d79d4b SDJ |
8454 | /* Checking if the expression is not constant. */ |
8455 | if (watchpoint_exp_is_const (exp)) | |
8456 | { | |
8457 | int len; | |
8458 | ||
8459 | len = exp_end - exp_start; | |
8460 | while (len > 0 && isspace (exp_start[len - 1])) | |
8461 | len--; | |
8462 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8463 | } | |
8464 | ||
c906108c SS |
8465 | exp_valid_block = innermost_block; |
8466 | mark = value_mark (); | |
a1442452 | 8467 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8468 | |
8469 | if (just_location) | |
8470 | { | |
8471 | exp_valid_block = NULL; | |
a1442452 | 8472 | val = value_addr (result); |
06a64a0b TT |
8473 | release_value (val); |
8474 | value_free_to_mark (mark); | |
8475 | } | |
8476 | else if (val != NULL) | |
fa4727a6 | 8477 | release_value (val); |
c906108c | 8478 | |
e9cafbcc TT |
8479 | tok = skip_spaces (arg); |
8480 | end_tok = skip_to_space (tok); | |
c906108c SS |
8481 | |
8482 | toklen = end_tok - tok; | |
8483 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8484 | { | |
2d134ed3 PA |
8485 | struct expression *cond; |
8486 | ||
60e1c644 | 8487 | innermost_block = NULL; |
c906108c SS |
8488 | tok = cond_start = end_tok + 1; |
8489 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8490 | |
8491 | /* The watchpoint expression may not be local, but the condition | |
8492 | may still be. E.g.: `watch global if local > 0'. */ | |
8493 | cond_exp_valid_block = innermost_block; | |
8494 | ||
2d134ed3 | 8495 | xfree (cond); |
c906108c SS |
8496 | cond_end = tok; |
8497 | } | |
8498 | if (*tok) | |
8a3fe4f8 | 8499 | error (_("Junk at end of command.")); |
c906108c | 8500 | |
53a5351d | 8501 | if (accessflag == hw_read) |
c5aa993b | 8502 | bp_type = bp_read_watchpoint; |
53a5351d | 8503 | else if (accessflag == hw_access) |
c5aa993b JM |
8504 | bp_type = bp_access_watchpoint; |
8505 | else | |
8506 | bp_type = bp_hardware_watchpoint; | |
c906108c | 8507 | |
e09342b5 TJB |
8508 | reg_cnt = can_use_hardware_watchpoint (val, target_exact_watchpoints); |
8509 | if (reg_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8510 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
e09342b5 | 8511 | if (reg_cnt != 0) |
c5aa993b JM |
8512 | { |
8513 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8514 | target_resources_ok = |
e09342b5 | 8515 | target_can_use_hardware_watchpoint (bp_type, i + reg_cnt, |
53a5351d | 8516 | other_type_used); |
c5aa993b | 8517 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8518 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8519 | |
c5aa993b | 8520 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
3e43a32a MS |
8521 | error (_("Target can only support one kind " |
8522 | "of HW watchpoint at a time.")); | |
c5aa993b | 8523 | } |
c906108c | 8524 | |
4a64f543 MS |
8525 | /* Change the type of breakpoint to an ordinary watchpoint if a |
8526 | hardware watchpoint could not be set. */ | |
e09342b5 | 8527 | if (!reg_cnt || target_resources_ok <= 0) |
4d28f7a8 KB |
8528 | bp_type = bp_watchpoint; |
8529 | ||
d983da9c | 8530 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8531 | |
8532 | /* If the expression is "local", then set up a "watchpoint scope" | |
8533 | breakpoint at the point where we've left the scope of the watchpoint | |
8534 | expression. Create the scope breakpoint before the watchpoint, so | |
8535 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8536 | if (exp_valid_block && frame) |
d983da9c | 8537 | { |
edb3359d DJ |
8538 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8539 | { | |
8540 | scope_breakpoint | |
a6d9a66e UW |
8541 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8542 | frame_unwind_caller_pc (frame), | |
edb3359d | 8543 | bp_watchpoint_scope); |
d983da9c | 8544 | |
edb3359d | 8545 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8546 | |
edb3359d DJ |
8547 | /* Automatically delete the breakpoint when it hits. */ |
8548 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8549 | |
edb3359d DJ |
8550 | /* Only break in the proper frame (help with recursion). */ |
8551 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8552 | |
edb3359d | 8553 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8554 | scope_breakpoint->loc->gdbarch |
8555 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8556 | scope_breakpoint->loc->requested_address |
8557 | = frame_unwind_caller_pc (frame); | |
8558 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8559 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8560 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8561 | scope_breakpoint->type); |
8562 | } | |
d983da9c DJ |
8563 | } |
8564 | ||
c906108c | 8565 | /* Now set up the breakpoint. */ |
2d134ed3 | 8566 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 8567 | set_breakpoint_number (internal, b); |
37e4754d | 8568 | b->thread = thread; |
b5de0fa7 | 8569 | b->disposition = disp_donttouch; |
c906108c SS |
8570 | b->exp = exp; |
8571 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8572 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8573 | if (just_location) |
8574 | { | |
8575 | struct type *t = value_type (val); | |
8576 | CORE_ADDR addr = value_as_address (val); | |
8577 | char *name; | |
8578 | ||
8579 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8580 | name = type_to_string (t); | |
8581 | ||
d63d0675 JK |
8582 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8583 | core_addr_to_string (addr)); | |
06a64a0b TT |
8584 | xfree (name); |
8585 | ||
d63d0675 JK |
8586 | b->exp_string = xstrprintf ("-location: %.*s", |
8587 | (int) (exp_end - exp_start), exp_start); | |
8588 | ||
06a64a0b TT |
8589 | /* The above expression is in C. */ |
8590 | b->language = language_c; | |
8591 | } | |
8592 | else | |
8593 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 8594 | b->val = val; |
fa4727a6 | 8595 | b->val_valid = 1; |
77b06cd7 TJB |
8596 | b->ops = &watchpoint_breakpoint_ops; |
8597 | ||
e09342b5 TJB |
8598 | /* Use an exact watchpoint when there's only one memory region to be |
8599 | watched, and only one debug register is needed to watch it. */ | |
8600 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
8601 | ||
c906108c SS |
8602 | if (cond_start) |
8603 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8604 | else | |
8605 | b->cond_string = 0; | |
c5aa993b | 8606 | |
c906108c | 8607 | if (frame) |
f6bc2008 PA |
8608 | { |
8609 | b->watchpoint_frame = get_frame_id (frame); | |
8610 | b->watchpoint_thread = inferior_ptid; | |
8611 | } | |
c906108c | 8612 | else |
f6bc2008 PA |
8613 | { |
8614 | b->watchpoint_frame = null_frame_id; | |
8615 | b->watchpoint_thread = null_ptid; | |
8616 | } | |
c906108c | 8617 | |
d983da9c | 8618 | if (scope_breakpoint != NULL) |
c906108c | 8619 | { |
d983da9c DJ |
8620 | /* The scope breakpoint is related to the watchpoint. We will |
8621 | need to act on them together. */ | |
8622 | b->related_breakpoint = scope_breakpoint; | |
8623 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8624 | } |
d983da9c | 8625 | |
06a64a0b TT |
8626 | if (!just_location) |
8627 | value_free_to_mark (mark); | |
2d134ed3 PA |
8628 | |
8629 | /* Finally update the new watchpoint. This creates the locations | |
8630 | that should be inserted. */ | |
8631 | update_watchpoint (b, 1); | |
84f4c1fe PM |
8632 | if (internal) |
8633 | /* Do not mention breakpoints with a negative number, but do | |
8634 | notify observers. */ | |
8635 | observer_notify_breakpoint_created (b->number); | |
8636 | else | |
8637 | mention (b); | |
b60e7edf | 8638 | update_global_location_list (1); |
c906108c SS |
8639 | } |
8640 | ||
e09342b5 TJB |
8641 | /* Return count of debug registers needed to watch the given expression. |
8642 | If EXACT_WATCHPOINTS is 1, then consider that only the address of | |
8643 | the start of the watched region will be monitored (i.e., all accesses | |
8644 | will be aligned). This uses less debug registers on some targets. | |
8645 | ||
8646 | If the watchpoint cannot be handled in hardware return zero. */ | |
c906108c | 8647 | |
c906108c | 8648 | static int |
e09342b5 | 8649 | can_use_hardware_watchpoint (struct value *v, int exact_watchpoints) |
c906108c SS |
8650 | { |
8651 | int found_memory_cnt = 0; | |
2e70b7b9 | 8652 | struct value *head = v; |
c906108c SS |
8653 | |
8654 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8655 | if (!can_use_hw_watchpoints) |
c906108c | 8656 | return 0; |
c5aa993b | 8657 | |
5c44784c JM |
8658 | /* Make sure that the value of the expression depends only upon |
8659 | memory contents, and values computed from them within GDB. If we | |
8660 | find any register references or function calls, we can't use a | |
8661 | hardware watchpoint. | |
8662 | ||
8663 | The idea here is that evaluating an expression generates a series | |
8664 | of values, one holding the value of every subexpression. (The | |
8665 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8666 | a*b+c.) GDB's values hold almost enough information to establish | |
8667 | the criteria given above --- they identify memory lvalues, | |
8668 | register lvalues, computed values, etcetera. So we can evaluate | |
8669 | the expression, and then scan the chain of values that leaves | |
8670 | behind to decide whether we can detect any possible change to the | |
8671 | expression's final value using only hardware watchpoints. | |
8672 | ||
8673 | However, I don't think that the values returned by inferior | |
8674 | function calls are special in any way. So this function may not | |
8675 | notice that an expression involving an inferior function call | |
8676 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8677 | for (; v; v = value_next (v)) |
c906108c | 8678 | { |
5c44784c | 8679 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8680 | { |
8464be76 DJ |
8681 | if (v != head && value_lazy (v)) |
8682 | /* A lazy memory lvalue in the chain is one that GDB never | |
8683 | needed to fetch; we either just used its address (e.g., | |
8684 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
8685 | in `a,b'). This doesn't apply to HEAD; if that is | |
8686 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 8687 | ; |
53a5351d | 8688 | else |
5c44784c JM |
8689 | { |
8690 | /* Ahh, memory we actually used! Check if we can cover | |
8691 | it with hardware watchpoints. */ | |
df407dfe | 8692 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8693 | |
8694 | /* We only watch structs and arrays if user asked for it | |
8695 | explicitly, never if they just happen to appear in a | |
8696 | middle of some value chain. */ | |
8697 | if (v == head | |
8698 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8699 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8700 | { | |
42ae5230 | 8701 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
8702 | int len; |
8703 | int num_regs; | |
8704 | ||
8705 | len = (exact_watchpoints | |
8706 | && is_scalar_type_recursive (vtype))? | |
8707 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 8708 | |
e09342b5 TJB |
8709 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
8710 | if (!num_regs) | |
2e70b7b9 MS |
8711 | return 0; |
8712 | else | |
e09342b5 | 8713 | found_memory_cnt += num_regs; |
2e70b7b9 | 8714 | } |
5c44784c | 8715 | } |
c5aa993b | 8716 | } |
5086187c AC |
8717 | else if (VALUE_LVAL (v) != not_lval |
8718 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 8719 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 8720 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 8721 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
8722 | } |
8723 | ||
8724 | /* The expression itself looks suitable for using a hardware | |
8725 | watchpoint, but give the target machine a chance to reject it. */ | |
8726 | return found_memory_cnt; | |
8727 | } | |
8728 | ||
8b93c638 | 8729 | void |
84f4c1fe | 8730 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8731 | { |
84f4c1fe | 8732 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
8733 | } |
8734 | ||
8735 | /* A helper function that looks for an argument at the start of a | |
8736 | string. The argument must also either be at the end of the string, | |
8737 | or be followed by whitespace. Returns 1 if it finds the argument, | |
8738 | 0 otherwise. If the argument is found, it updates *STR. */ | |
8739 | ||
8740 | static int | |
8741 | check_for_argument (char **str, char *arg, int arg_len) | |
8742 | { | |
8743 | if (strncmp (*str, arg, arg_len) == 0 | |
8744 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
8745 | { | |
8746 | *str += arg_len; | |
8747 | return 1; | |
8748 | } | |
8749 | return 0; | |
8750 | } | |
8751 | ||
8752 | /* A helper function that looks for the "-location" argument and then | |
8753 | calls watch_command_1. */ | |
8754 | ||
8755 | static void | |
8756 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
8757 | { | |
8758 | int just_location = 0; | |
8759 | ||
8760 | if (arg | |
8761 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
8762 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
8763 | { | |
e9cafbcc | 8764 | arg = skip_spaces (arg); |
06a64a0b TT |
8765 | just_location = 1; |
8766 | } | |
8767 | ||
84f4c1fe | 8768 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 8769 | } |
8926118c | 8770 | |
c5aa993b | 8771 | static void |
fba45db2 | 8772 | watch_command (char *arg, int from_tty) |
c906108c | 8773 | { |
06a64a0b | 8774 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
8775 | } |
8776 | ||
8b93c638 | 8777 | void |
84f4c1fe | 8778 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8779 | { |
84f4c1fe | 8780 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 8781 | } |
8926118c | 8782 | |
c5aa993b | 8783 | static void |
fba45db2 | 8784 | rwatch_command (char *arg, int from_tty) |
c906108c | 8785 | { |
06a64a0b | 8786 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
8787 | } |
8788 | ||
8b93c638 | 8789 | void |
84f4c1fe | 8790 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8791 | { |
84f4c1fe | 8792 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 8793 | } |
8926118c | 8794 | |
c5aa993b | 8795 | static void |
fba45db2 | 8796 | awatch_command (char *arg, int from_tty) |
c906108c | 8797 | { |
06a64a0b | 8798 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 8799 | } |
c906108c | 8800 | \f |
c5aa993b | 8801 | |
43ff13b4 | 8802 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8803 | because it uses the mechanisms of breakpoints. */ |
8804 | ||
bfec99b2 PA |
8805 | struct until_break_command_continuation_args |
8806 | { | |
8807 | struct breakpoint *breakpoint; | |
8808 | struct breakpoint *breakpoint2; | |
186c406b | 8809 | int thread_num; |
bfec99b2 PA |
8810 | }; |
8811 | ||
43ff13b4 | 8812 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 8813 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 8814 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 8815 | command. */ |
c2c6d25f | 8816 | static void |
604ead4a | 8817 | until_break_command_continuation (void *arg) |
43ff13b4 | 8818 | { |
bfec99b2 PA |
8819 | struct until_break_command_continuation_args *a = arg; |
8820 | ||
8821 | delete_breakpoint (a->breakpoint); | |
8822 | if (a->breakpoint2) | |
8823 | delete_breakpoint (a->breakpoint2); | |
186c406b | 8824 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
8825 | } |
8826 | ||
c906108c | 8827 | void |
ae66c1fc | 8828 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8829 | { |
8830 | struct symtabs_and_lines sals; | |
8831 | struct symtab_and_line sal; | |
206415a3 | 8832 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8833 | struct breakpoint *breakpoint; |
f107f563 | 8834 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 8835 | struct cleanup *old_chain; |
186c406b TT |
8836 | int thread; |
8837 | struct thread_info *tp; | |
c906108c SS |
8838 | |
8839 | clear_proceed_status (); | |
8840 | ||
8841 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 8842 | this function. */ |
c5aa993b | 8843 | |
c906108c SS |
8844 | if (default_breakpoint_valid) |
8845 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8846 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8847 | else |
53a5351d | 8848 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8849 | 0, (char ***) NULL, NULL); |
c5aa993b | 8850 | |
c906108c | 8851 | if (sals.nelts != 1) |
8a3fe4f8 | 8852 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8853 | |
c906108c | 8854 | sal = sals.sals[0]; |
4a64f543 | 8855 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 8856 | |
c906108c | 8857 | if (*arg) |
8a3fe4f8 | 8858 | error (_("Junk at end of arguments.")); |
c5aa993b | 8859 | |
c906108c | 8860 | resolve_sal_pc (&sal); |
c5aa993b | 8861 | |
ae66c1fc EZ |
8862 | if (anywhere) |
8863 | /* If the user told us to continue until a specified location, | |
8864 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8865 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8866 | null_frame_id, bp_until); | |
ae66c1fc | 8867 | else |
4a64f543 MS |
8868 | /* Otherwise, specify the selected frame, because we want to stop |
8869 | only at the very same frame. */ | |
a6d9a66e UW |
8870 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8871 | get_stack_frame_id (frame), | |
ae66c1fc | 8872 | bp_until); |
c5aa993b | 8873 | |
f107f563 | 8874 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8875 | |
186c406b TT |
8876 | tp = inferior_thread (); |
8877 | thread = tp->num; | |
8878 | ||
ae66c1fc EZ |
8879 | /* Keep within the current frame, or in frames called by the current |
8880 | one. */ | |
edb3359d DJ |
8881 | |
8882 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8883 | { |
edb3359d DJ |
8884 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8885 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8886 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8887 | sal, | |
edb3359d | 8888 | frame_unwind_caller_id (frame), |
f107f563 VP |
8889 | bp_until); |
8890 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
8891 | |
8892 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
8893 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 8894 | } |
c5aa993b | 8895 | |
c906108c | 8896 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 8897 | |
4a64f543 MS |
8898 | /* If we are running asynchronously, and proceed call above has |
8899 | actually managed to start the target, arrange for breakpoints to | |
8900 | be deleted when the target stops. Otherwise, we're already | |
8901 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 8902 | |
8ea051c5 | 8903 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8904 | { |
bfec99b2 PA |
8905 | struct until_break_command_continuation_args *args; |
8906 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8907 | |
bfec99b2 PA |
8908 | args->breakpoint = breakpoint; |
8909 | args->breakpoint2 = breakpoint2; | |
186c406b | 8910 | args->thread_num = thread; |
f107f563 VP |
8911 | |
8912 | discard_cleanups (old_chain); | |
95e54da7 PA |
8913 | add_continuation (inferior_thread (), |
8914 | until_break_command_continuation, args, | |
604ead4a | 8915 | xfree); |
f107f563 VP |
8916 | } |
8917 | else | |
c5aa993b | 8918 | do_cleanups (old_chain); |
c906108c | 8919 | } |
ae66c1fc | 8920 | |
c906108c SS |
8921 | /* This function attempts to parse an optional "if <cond>" clause |
8922 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8923 | |
c906108c SS |
8924 | Else, it returns a pointer to the condition string. (It does not |
8925 | attempt to evaluate the string against a particular block.) And, | |
8926 | it updates arg to point to the first character following the parsed | |
4a64f543 | 8927 | if clause in the arg string. */ |
53a5351d | 8928 | |
c906108c | 8929 | static char * |
fba45db2 | 8930 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8931 | { |
c5aa993b JM |
8932 | char *cond_string; |
8933 | ||
8934 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8935 | return NULL; |
c5aa993b | 8936 | |
4a64f543 | 8937 | /* Skip the "if" keyword. */ |
c906108c | 8938 | (*arg) += 2; |
c5aa993b | 8939 | |
c906108c | 8940 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 8941 | condition string. */ |
e9cafbcc | 8942 | *arg = skip_spaces (*arg); |
c906108c | 8943 | cond_string = *arg; |
c5aa993b | 8944 | |
4a64f543 MS |
8945 | /* Assume that the condition occupies the remainder of the arg |
8946 | string. */ | |
c906108c | 8947 | (*arg) += strlen (cond_string); |
c5aa993b | 8948 | |
c906108c SS |
8949 | return cond_string; |
8950 | } | |
c5aa993b | 8951 | |
c906108c SS |
8952 | /* Commands to deal with catching events, such as signals, exceptions, |
8953 | process start/exit, etc. */ | |
c5aa993b JM |
8954 | |
8955 | typedef enum | |
8956 | { | |
44feb3ce TT |
8957 | catch_fork_temporary, catch_vfork_temporary, |
8958 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8959 | } |
8960 | catch_fork_kind; | |
8961 | ||
c906108c | 8962 | static void |
cc59ec59 MS |
8963 | catch_fork_command_1 (char *arg, int from_tty, |
8964 | struct cmd_list_element *command) | |
c906108c | 8965 | { |
a6d9a66e | 8966 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8967 | char *cond_string = NULL; |
44feb3ce TT |
8968 | catch_fork_kind fork_kind; |
8969 | int tempflag; | |
8970 | ||
8971 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8972 | tempflag = (fork_kind == catch_fork_temporary | |
8973 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8974 | |
44feb3ce TT |
8975 | if (!arg) |
8976 | arg = ""; | |
e9cafbcc | 8977 | arg = skip_spaces (arg); |
c5aa993b | 8978 | |
c906108c | 8979 | /* The allowed syntax is: |
c5aa993b JM |
8980 | catch [v]fork |
8981 | catch [v]fork if <cond> | |
8982 | ||
4a64f543 | 8983 | First, check if there's an if clause. */ |
c906108c | 8984 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 8985 | |
c906108c | 8986 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8987 | error (_("Junk at end of arguments.")); |
c5aa993b | 8988 | |
c906108c | 8989 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 8990 | and enable reporting of such events. */ |
c5aa993b JM |
8991 | switch (fork_kind) |
8992 | { | |
44feb3ce TT |
8993 | case catch_fork_temporary: |
8994 | case catch_fork_permanent: | |
a6d9a66e | 8995 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8996 | &catch_fork_breakpoint_ops); |
c906108c | 8997 | break; |
44feb3ce TT |
8998 | case catch_vfork_temporary: |
8999 | case catch_vfork_permanent: | |
a6d9a66e | 9000 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9001 | &catch_vfork_breakpoint_ops); |
c906108c | 9002 | break; |
c5aa993b | 9003 | default: |
8a3fe4f8 | 9004 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9005 | break; |
c5aa993b | 9006 | } |
c906108c SS |
9007 | } |
9008 | ||
9009 | static void | |
cc59ec59 MS |
9010 | catch_exec_command_1 (char *arg, int from_tty, |
9011 | struct cmd_list_element *command) | |
c906108c | 9012 | { |
a6d9a66e | 9013 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9014 | int tempflag; |
c5aa993b | 9015 | char *cond_string = NULL; |
c906108c | 9016 | |
44feb3ce TT |
9017 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9018 | ||
9019 | if (!arg) | |
9020 | arg = ""; | |
e9cafbcc | 9021 | arg = skip_spaces (arg); |
c906108c SS |
9022 | |
9023 | /* The allowed syntax is: | |
c5aa993b JM |
9024 | catch exec |
9025 | catch exec if <cond> | |
c906108c | 9026 | |
4a64f543 | 9027 | First, check if there's an if clause. */ |
c906108c SS |
9028 | cond_string = ep_parse_optional_if_clause (&arg); |
9029 | ||
9030 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9031 | error (_("Junk at end of arguments.")); |
c906108c SS |
9032 | |
9033 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 9034 | and enable reporting of such events. */ |
a6d9a66e UW |
9035 | create_catchpoint (gdbarch, tempflag, cond_string, |
9036 | &catch_exec_breakpoint_ops); | |
c906108c | 9037 | } |
c5aa993b | 9038 | |
3086aeae DJ |
9039 | static enum print_stop_action |
9040 | print_exception_catchpoint (struct breakpoint *b) | |
9041 | { | |
ade92717 | 9042 | int bp_temp, bp_throw; |
3086aeae | 9043 | |
ade92717 | 9044 | annotate_catchpoint (b->number); |
3086aeae | 9045 | |
ade92717 AR |
9046 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9047 | if (b->loc->address != b->loc->requested_address) | |
9048 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9049 | b->loc->address, | |
9050 | b->number, 1); | |
df2b6d2d | 9051 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9052 | ui_out_text (uiout, |
9053 | bp_temp ? "Temporary catchpoint " | |
9054 | : "Catchpoint "); | |
9055 | if (!ui_out_is_mi_like_p (uiout)) | |
9056 | ui_out_field_int (uiout, "bkptno", b->number); | |
9057 | ui_out_text (uiout, | |
c0b37c48 AR |
9058 | bp_throw ? " (exception thrown), " |
9059 | : " (exception caught), "); | |
ade92717 AR |
9060 | if (ui_out_is_mi_like_p (uiout)) |
9061 | { | |
9062 | ui_out_field_string (uiout, "reason", | |
9063 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9064 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9065 | ui_out_field_int (uiout, "bkptno", b->number); | |
9066 | } | |
3086aeae DJ |
9067 | return PRINT_SRC_AND_LOC; |
9068 | } | |
9069 | ||
9070 | static void | |
cc59ec59 MS |
9071 | print_one_exception_catchpoint (struct breakpoint *b, |
9072 | struct bp_location **last_loc) | |
3086aeae | 9073 | { |
79a45b7d | 9074 | struct value_print_options opts; |
cc59ec59 | 9075 | |
79a45b7d TT |
9076 | get_user_print_options (&opts); |
9077 | if (opts.addressprint) | |
3086aeae DJ |
9078 | { |
9079 | annotate_field (4); | |
604133b5 AR |
9080 | if (b->loc == NULL || b->loc->shlib_disabled) |
9081 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9082 | else | |
5af949e3 UW |
9083 | ui_out_field_core_addr (uiout, "addr", |
9084 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9085 | } |
9086 | annotate_field (5); | |
604133b5 | 9087 | if (b->loc) |
a6d9a66e | 9088 | *last_loc = b->loc; |
3086aeae DJ |
9089 | if (strstr (b->addr_string, "throw") != NULL) |
9090 | ui_out_field_string (uiout, "what", "exception throw"); | |
9091 | else | |
9092 | ui_out_field_string (uiout, "what", "exception catch"); | |
9093 | } | |
9094 | ||
9095 | static void | |
9096 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9097 | { | |
ade92717 AR |
9098 | int bp_temp; |
9099 | int bp_throw; | |
9100 | ||
df2b6d2d | 9101 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9102 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9103 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9104 | : _("Catchpoint ")); | |
9105 | ui_out_field_int (uiout, "bkptno", b->number); | |
9106 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9107 | : _(" (catch)")); | |
3086aeae DJ |
9108 | } |
9109 | ||
6149aea9 PA |
9110 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9111 | catch catchpoints. */ | |
9112 | ||
9113 | static void | |
4a64f543 MS |
9114 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9115 | struct ui_file *fp) | |
6149aea9 PA |
9116 | { |
9117 | int bp_temp; | |
9118 | int bp_throw; | |
9119 | ||
9120 | bp_temp = b->disposition == disp_del; | |
9121 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9122 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9123 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
9124 | } | |
9125 | ||
3086aeae | 9126 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
9127 | NULL, /* insert */ |
9128 | NULL, /* remove */ | |
9129 | NULL, /* breakpoint_hit */ | |
e09342b5 | 9130 | NULL, /* resources_needed */ |
3086aeae DJ |
9131 | print_exception_catchpoint, |
9132 | print_one_exception_catchpoint, | |
6149aea9 PA |
9133 | print_mention_exception_catchpoint, |
9134 | print_recreate_exception_catchpoint | |
3086aeae DJ |
9135 | }; |
9136 | ||
9137 | static int | |
9138 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9139 | enum exception_event_kind ex_event, int from_tty) | |
9140 | { | |
604133b5 AR |
9141 | char *trigger_func_name; |
9142 | ||
3086aeae | 9143 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9144 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9145 | else |
604133b5 | 9146 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9147 | |
8cdf0e15 VP |
9148 | create_breakpoint (get_current_arch (), |
9149 | trigger_func_name, cond_string, -1, | |
9150 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9151 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9152 | 0, |
9153 | AUTO_BOOLEAN_TRUE /* pending */, | |
9154 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9155 | 1 /* enabled */, |
9156 | 0 /* internal */); | |
3086aeae | 9157 | |
3086aeae DJ |
9158 | return 1; |
9159 | } | |
9160 | ||
4a64f543 | 9161 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9162 | |
9163 | static void | |
fba45db2 KB |
9164 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9165 | int tempflag, int from_tty) | |
c906108c | 9166 | { |
c5aa993b | 9167 | char *cond_string = NULL; |
c5aa993b | 9168 | |
44feb3ce TT |
9169 | if (!arg) |
9170 | arg = ""; | |
e9cafbcc | 9171 | arg = skip_spaces (arg); |
c5aa993b | 9172 | |
c906108c SS |
9173 | cond_string = ep_parse_optional_if_clause (&arg); |
9174 | ||
9175 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9176 | error (_("Junk at end of arguments.")); |
c906108c | 9177 | |
059fb39f PM |
9178 | if (ex_event != EX_EVENT_THROW |
9179 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9180 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9181 | |
3086aeae DJ |
9182 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9183 | return; | |
9184 | ||
8a3fe4f8 | 9185 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9186 | } |
9187 | ||
44feb3ce TT |
9188 | /* Implementation of "catch catch" command. */ |
9189 | ||
9190 | static void | |
9191 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9192 | { | |
9193 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9194 | |
44feb3ce TT |
9195 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9196 | } | |
9197 | ||
9198 | /* Implementation of "catch throw" command. */ | |
9199 | ||
9200 | static void | |
9201 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9202 | { | |
9203 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9204 | |
44feb3ce TT |
9205 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9206 | } | |
9207 | ||
f7f9143b JB |
9208 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9209 | ||
9210 | static void | |
a6d9a66e UW |
9211 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9212 | struct symtab_and_line sal, | |
f7f9143b JB |
9213 | char *addr_string, |
9214 | char *exp_string, | |
9215 | char *cond_string, | |
9216 | struct expression *cond, | |
9217 | struct breakpoint_ops *ops, | |
9218 | int tempflag, | |
9219 | int from_tty) | |
9220 | { | |
9221 | struct breakpoint *b; | |
9222 | ||
9223 | if (from_tty) | |
9224 | { | |
5af949e3 UW |
9225 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9226 | if (!loc_gdbarch) | |
9227 | loc_gdbarch = gdbarch; | |
9228 | ||
6c95b8df PA |
9229 | describe_other_breakpoints (loc_gdbarch, |
9230 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9231 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9232 | version for exception catchpoints, because two catchpoints | |
9233 | used for different exception names will use the same address. | |
9234 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9235 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9236 | inapropriate, we should use the word catchpoint, and tell |
9237 | the user what type of catchpoint it is. The above is good | |
9238 | enough for now, though. */ | |
9239 | } | |
9240 | ||
a6d9a66e | 9241 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9242 | set_breakpoint_count (breakpoint_count + 1); |
9243 | ||
9244 | b->enable_state = bp_enabled; | |
9245 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9246 | b->number = breakpoint_count; | |
9247 | b->ignore_count = 0; | |
511a6cd4 | 9248 | b->loc->cond = cond; |
f7f9143b JB |
9249 | b->addr_string = addr_string; |
9250 | b->language = language_ada; | |
9251 | b->cond_string = cond_string; | |
9252 | b->exp_string = exp_string; | |
9253 | b->thread = -1; | |
9254 | b->ops = ops; | |
f7f9143b JB |
9255 | |
9256 | mention (b); | |
b60e7edf | 9257 | update_global_location_list (1); |
f7f9143b JB |
9258 | } |
9259 | ||
9260 | /* Implement the "catch exception" command. */ | |
9261 | ||
9262 | static void | |
44feb3ce TT |
9263 | catch_ada_exception_command (char *arg, int from_tty, |
9264 | struct cmd_list_element *command) | |
f7f9143b | 9265 | { |
a6d9a66e | 9266 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9267 | int tempflag; |
f7f9143b | 9268 | struct symtab_and_line sal; |
f7f9143b JB |
9269 | char *addr_string = NULL; |
9270 | char *exp_string = NULL; | |
9271 | char *cond_string = NULL; | |
9272 | struct expression *cond = NULL; | |
9273 | struct breakpoint_ops *ops = NULL; | |
9274 | ||
44feb3ce TT |
9275 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9276 | ||
9277 | if (!arg) | |
9278 | arg = ""; | |
f7f9143b JB |
9279 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9280 | &cond_string, &cond, &ops); | |
a6d9a66e | 9281 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9282 | cond_string, cond, ops, tempflag, |
9283 | from_tty); | |
9284 | } | |
9285 | ||
a96d9b2e SDJ |
9286 | /* Cleanup function for a syscall filter list. */ |
9287 | static void | |
9288 | clean_up_filters (void *arg) | |
9289 | { | |
9290 | VEC(int) *iter = *(VEC(int) **) arg; | |
9291 | VEC_free (int, iter); | |
9292 | } | |
9293 | ||
9294 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9295 | filter list, or NULL if no filtering is required. */ | |
9296 | static VEC(int) * | |
9297 | catch_syscall_split_args (char *arg) | |
9298 | { | |
9299 | VEC(int) *result = NULL; | |
9300 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9301 | ||
9302 | while (*arg != '\0') | |
9303 | { | |
9304 | int i, syscall_number; | |
9305 | char *endptr; | |
9306 | char cur_name[128]; | |
9307 | struct syscall s; | |
9308 | ||
9309 | /* Skip whitespace. */ | |
9310 | while (isspace (*arg)) | |
9311 | arg++; | |
9312 | ||
9313 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9314 | cur_name[i] = arg[i]; | |
9315 | cur_name[i] = '\0'; | |
9316 | arg += i; | |
9317 | ||
9318 | /* Check if the user provided a syscall name or a number. */ | |
9319 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9320 | if (*endptr == '\0') | |
bccd0dd2 | 9321 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9322 | else |
9323 | { | |
9324 | /* We have a name. Let's check if it's valid and convert it | |
9325 | to a number. */ | |
9326 | get_syscall_by_name (cur_name, &s); | |
9327 | ||
9328 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9329 | /* Here we have to issue an error instead of a warning, |
9330 | because GDB cannot do anything useful if there's no | |
9331 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9332 | error (_("Unknown syscall name '%s'."), cur_name); |
9333 | } | |
9334 | ||
9335 | /* Ok, it's valid. */ | |
9336 | VEC_safe_push (int, result, s.number); | |
9337 | } | |
9338 | ||
9339 | discard_cleanups (cleanup); | |
9340 | return result; | |
9341 | } | |
9342 | ||
9343 | /* Implement the "catch syscall" command. */ | |
9344 | ||
9345 | static void | |
cc59ec59 MS |
9346 | catch_syscall_command_1 (char *arg, int from_tty, |
9347 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9348 | { |
9349 | int tempflag; | |
9350 | VEC(int) *filter; | |
9351 | struct syscall s; | |
9352 | struct gdbarch *gdbarch = get_current_arch (); | |
9353 | ||
9354 | /* Checking if the feature if supported. */ | |
9355 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9356 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9357 | this architecture yet.")); |
a96d9b2e SDJ |
9358 | |
9359 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9360 | ||
e9cafbcc | 9361 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9362 | |
9363 | /* We need to do this first "dummy" translation in order | |
9364 | to get the syscall XML file loaded or, most important, | |
9365 | to display a warning to the user if there's no XML file | |
9366 | for his/her architecture. */ | |
9367 | get_syscall_by_number (0, &s); | |
9368 | ||
9369 | /* The allowed syntax is: | |
9370 | catch syscall | |
9371 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9372 | ||
9373 | Let's check if there's a syscall name. */ | |
9374 | ||
9375 | if (arg != NULL) | |
9376 | filter = catch_syscall_split_args (arg); | |
9377 | else | |
9378 | filter = NULL; | |
9379 | ||
9380 | create_syscall_event_catchpoint (tempflag, filter, | |
9381 | &catch_syscall_breakpoint_ops); | |
9382 | } | |
9383 | ||
f7f9143b JB |
9384 | /* Implement the "catch assert" command. */ |
9385 | ||
9386 | static void | |
3e43a32a MS |
9387 | catch_assert_command (char *arg, int from_tty, |
9388 | struct cmd_list_element *command) | |
f7f9143b | 9389 | { |
a6d9a66e | 9390 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9391 | int tempflag; |
f7f9143b JB |
9392 | struct symtab_and_line sal; |
9393 | char *addr_string = NULL; | |
9394 | struct breakpoint_ops *ops = NULL; | |
9395 | ||
44feb3ce TT |
9396 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9397 | ||
9398 | if (!arg) | |
9399 | arg = ""; | |
f7f9143b | 9400 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9401 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9402 | ops, tempflag, from_tty); | |
f7f9143b JB |
9403 | } |
9404 | ||
c906108c | 9405 | static void |
fba45db2 | 9406 | catch_command (char *arg, int from_tty) |
c906108c | 9407 | { |
44feb3ce | 9408 | error (_("Catch requires an event name.")); |
c906108c SS |
9409 | } |
9410 | \f | |
9411 | ||
9412 | static void | |
fba45db2 | 9413 | tcatch_command (char *arg, int from_tty) |
c906108c | 9414 | { |
44feb3ce | 9415 | error (_("Catch requires an event name.")); |
c906108c SS |
9416 | } |
9417 | ||
80f8a6eb | 9418 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9419 | |
9420 | static void | |
fba45db2 | 9421 | clear_command (char *arg, int from_tty) |
c906108c | 9422 | { |
d6e956e5 VP |
9423 | struct breakpoint *b; |
9424 | VEC(breakpoint_p) *found = 0; | |
9425 | int ix; | |
c906108c SS |
9426 | int default_match; |
9427 | struct symtabs_and_lines sals; | |
9428 | struct symtab_and_line sal; | |
c906108c SS |
9429 | int i; |
9430 | ||
9431 | if (arg) | |
9432 | { | |
9433 | sals = decode_line_spec (arg, 1); | |
9434 | default_match = 0; | |
9435 | } | |
9436 | else | |
9437 | { | |
c5aa993b | 9438 | sals.sals = (struct symtab_and_line *) |
c906108c | 9439 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9440 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9441 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9442 | sal.line = default_breakpoint_line; |
9443 | sal.symtab = default_breakpoint_symtab; | |
9444 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9445 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9446 | if (sal.symtab == 0) |
8a3fe4f8 | 9447 | error (_("No source file specified.")); |
c906108c SS |
9448 | |
9449 | sals.sals[0] = sal; | |
9450 | sals.nelts = 1; | |
9451 | ||
9452 | default_match = 1; | |
9453 | } | |
9454 | ||
4a64f543 MS |
9455 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9456 | seems, because all existing breakpoints typically have both | |
9457 | file/line and pc set. So, if clear is given file/line, we can | |
9458 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9459 | |
9460 | We only support clearing given the address explicitly | |
9461 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9462 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9463 | due to optimization, all in one block. |
4a64f543 MS |
9464 | |
9465 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9466 | PC corresponding to the same file:line, the breakpoint won't |
9467 | be cleared. We probably can still clear the breakpoint, but | |
9468 | since the other PC value is never presented to user, user | |
9469 | can only find it by guessing, and it does not seem important | |
9470 | to support that. */ | |
9471 | ||
4a64f543 MS |
9472 | /* For each line spec given, delete bps which correspond to it. Do |
9473 | it in two passes, solely to preserve the current behavior that | |
9474 | from_tty is forced true if we delete more than one | |
9475 | breakpoint. */ | |
c906108c | 9476 | |
80f8a6eb | 9477 | found = NULL; |
c906108c SS |
9478 | for (i = 0; i < sals.nelts; i++) |
9479 | { | |
9480 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9481 | If line given (pc == 0), clear all bpts on specified line. |
9482 | If defaulting, clear all bpts on default line | |
c906108c | 9483 | or at default pc. |
c5aa993b JM |
9484 | |
9485 | defaulting sal.pc != 0 tests to do | |
9486 | ||
9487 | 0 1 pc | |
9488 | 1 1 pc _and_ line | |
9489 | 0 0 line | |
9490 | 1 0 <can't happen> */ | |
c906108c SS |
9491 | |
9492 | sal = sals.sals[i]; | |
c906108c | 9493 | |
4a64f543 | 9494 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9495 | ALL_BREAKPOINTS (b) |
c5aa993b | 9496 | { |
0d381245 | 9497 | int match = 0; |
4a64f543 | 9498 | /* Are we going to delete b? */ |
cc60f2e3 | 9499 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9500 | { |
9501 | struct bp_location *loc = b->loc; | |
9502 | for (; loc; loc = loc->next) | |
9503 | { | |
6c95b8df PA |
9504 | int pc_match = sal.pc |
9505 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9506 | && (loc->address == sal.pc) |
9507 | && (!section_is_overlay (loc->section) | |
9508 | || loc->section == sal.section); | |
9509 | int line_match = ((default_match || (0 == sal.pc)) | |
9510 | && b->source_file != NULL | |
9511 | && sal.symtab != NULL | |
6c95b8df | 9512 | && sal.pspace == loc->pspace |
3e43a32a MS |
9513 | && strcmp (b->source_file, |
9514 | sal.symtab->filename) == 0 | |
0d381245 VP |
9515 | && b->line_number == sal.line); |
9516 | if (pc_match || line_match) | |
9517 | { | |
9518 | match = 1; | |
9519 | break; | |
9520 | } | |
9521 | } | |
9522 | } | |
9523 | ||
9524 | if (match) | |
d6e956e5 | 9525 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9526 | } |
80f8a6eb MS |
9527 | } |
9528 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9529 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9530 | { |
9531 | if (arg) | |
8a3fe4f8 | 9532 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9533 | else |
8a3fe4f8 | 9534 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9535 | } |
c906108c | 9536 | |
d6e956e5 | 9537 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9538 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9539 | if (from_tty) |
a3f17187 | 9540 | { |
d6e956e5 | 9541 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9542 | printf_unfiltered (_("Deleted breakpoint ")); |
9543 | else | |
9544 | printf_unfiltered (_("Deleted breakpoints ")); | |
9545 | } | |
80f8a6eb | 9546 | breakpoints_changed (); |
d6e956e5 VP |
9547 | |
9548 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9549 | { |
c5aa993b | 9550 | if (from_tty) |
d6e956e5 VP |
9551 | printf_unfiltered ("%d ", b->number); |
9552 | delete_breakpoint (b); | |
c906108c | 9553 | } |
80f8a6eb MS |
9554 | if (from_tty) |
9555 | putchar_unfiltered ('\n'); | |
c906108c SS |
9556 | } |
9557 | \f | |
9558 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9559 | all breakpoints that are marked for deletion, whether hit or not. | |
9560 | This is called after any breakpoint is hit, or after errors. */ | |
9561 | ||
9562 | void | |
fba45db2 | 9563 | breakpoint_auto_delete (bpstat bs) |
c906108c | 9564 | { |
35df4500 | 9565 | struct breakpoint *b, *b_tmp; |
c906108c SS |
9566 | |
9567 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9568 | if (bs->breakpoint_at |
9569 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9570 | && bs->stop) |
f431efe5 | 9571 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 9572 | |
35df4500 | 9573 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9574 | { |
b5de0fa7 | 9575 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9576 | delete_breakpoint (b); |
9577 | } | |
c906108c SS |
9578 | } |
9579 | ||
4a64f543 MS |
9580 | /* A comparison function for bp_location AP and BP being interfaced to |
9581 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
9582 | does breakpoint_address_is_meaningful say for its OWNER), | |
9583 | secondarily by ordering first bp_permanent OWNERed elements and | |
9584 | terciarily just ensuring the array is sorted stable way despite | |
9585 | qsort being an instable algorithm. */ | |
876fa593 JK |
9586 | |
9587 | static int | |
494cfb0f | 9588 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9589 | { |
494cfb0f JK |
9590 | struct bp_location *a = *(void **) ap; |
9591 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9592 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9593 | int a_perm = a->owner->enable_state == bp_permanent; |
9594 | int b_perm = b->owner->enable_state == bp_permanent; | |
9595 | ||
9596 | if (a->address != b->address) | |
9597 | return (a->address > b->address) - (a->address < b->address); | |
9598 | ||
9599 | /* Sort permanent breakpoints first. */ | |
9600 | if (a_perm != b_perm) | |
9601 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9602 | ||
4a64f543 MS |
9603 | /* Make the user-visible order stable across GDB runs. Locations of |
9604 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
9605 | |
9606 | if (a->owner->number != b->owner->number) | |
9607 | return (a->owner->number > b->owner->number) | |
9608 | - (a->owner->number < b->owner->number); | |
9609 | ||
9610 | return (a > b) - (a < b); | |
9611 | } | |
9612 | ||
876fa593 | 9613 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
9614 | bp_location_shadow_len_after_address_max according to the current |
9615 | content of the bp_location array. */ | |
f7545552 TT |
9616 | |
9617 | static void | |
876fa593 | 9618 | bp_location_target_extensions_update (void) |
f7545552 | 9619 | { |
876fa593 JK |
9620 | struct bp_location *bl, **blp_tmp; |
9621 | ||
9622 | bp_location_placed_address_before_address_max = 0; | |
9623 | bp_location_shadow_len_after_address_max = 0; | |
9624 | ||
9625 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9626 | { | |
9627 | CORE_ADDR start, end, addr; | |
9628 | ||
9629 | if (!bp_location_has_shadow (bl)) | |
9630 | continue; | |
9631 | ||
9632 | start = bl->target_info.placed_address; | |
9633 | end = start + bl->target_info.shadow_len; | |
9634 | ||
9635 | gdb_assert (bl->address >= start); | |
9636 | addr = bl->address - start; | |
9637 | if (addr > bp_location_placed_address_before_address_max) | |
9638 | bp_location_placed_address_before_address_max = addr; | |
9639 | ||
9640 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9641 | ||
9642 | gdb_assert (bl->address < end); | |
9643 | addr = end - bl->address; | |
9644 | if (addr > bp_location_shadow_len_after_address_max) | |
9645 | bp_location_shadow_len_after_address_max = addr; | |
9646 | } | |
f7545552 TT |
9647 | } |
9648 | ||
4cd9bd08 | 9649 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9650 | into the inferior, only remove already-inserted locations that no |
9651 | longer should be inserted. Functions that delete a breakpoint or | |
9652 | breakpoints should pass false, so that deleting a breakpoint | |
9653 | doesn't have the side effect of inserting the locations of other | |
9654 | breakpoints that are marked not-inserted, but should_be_inserted | |
9655 | returns true on them. | |
9656 | ||
9657 | This behaviour is useful is situations close to tear-down -- e.g., | |
9658 | after an exec, while the target still has execution, but breakpoint | |
9659 | shadows of the previous executable image should *NOT* be restored | |
9660 | to the new image; or before detaching, where the target still has | |
9661 | execution and wants to delete breakpoints from GDB's lists, and all | |
9662 | breakpoints had already been removed from the inferior. */ | |
9663 | ||
0d381245 | 9664 | static void |
b60e7edf | 9665 | update_global_location_list (int should_insert) |
0d381245 | 9666 | { |
74960c60 | 9667 | struct breakpoint *b; |
876fa593 | 9668 | struct bp_location **locp, *loc; |
f7545552 TT |
9669 | struct cleanup *cleanups; |
9670 | ||
2d134ed3 PA |
9671 | /* Used in the duplicates detection below. When iterating over all |
9672 | bp_locations, points to the first bp_location of a given address. | |
9673 | Breakpoints and watchpoints of different types are never | |
9674 | duplicates of each other. Keep one pointer for each type of | |
9675 | breakpoint/watchpoint, so we only need to loop over all locations | |
9676 | once. */ | |
9677 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9678 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9679 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9680 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 9681 | |
4a64f543 MS |
9682 | /* Saved former bp_location array which we compare against the newly |
9683 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
9684 | struct bp_location **old_location, **old_locp; |
9685 | unsigned old_location_count; | |
9686 | ||
9687 | old_location = bp_location; | |
9688 | old_location_count = bp_location_count; | |
9689 | bp_location = NULL; | |
9690 | bp_location_count = 0; | |
9691 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9692 | |
74960c60 | 9693 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9694 | for (loc = b->loc; loc; loc = loc->next) |
9695 | bp_location_count++; | |
9696 | ||
9697 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9698 | locp = bp_location; | |
9699 | ALL_BREAKPOINTS (b) | |
9700 | for (loc = b->loc; loc; loc = loc->next) | |
9701 | *locp++ = loc; | |
9702 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9703 | bp_location_compare); |
876fa593 JK |
9704 | |
9705 | bp_location_target_extensions_update (); | |
74960c60 | 9706 | |
4a64f543 MS |
9707 | /* Identify bp_location instances that are no longer present in the |
9708 | new list, and therefore should be freed. Note that it's not | |
9709 | necessary that those locations should be removed from inferior -- | |
9710 | if there's another location at the same address (previously | |
9711 | marked as duplicate), we don't need to remove/insert the | |
9712 | location. | |
876fa593 | 9713 | |
4a64f543 MS |
9714 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
9715 | and former bp_location array state respectively. */ | |
876fa593 JK |
9716 | |
9717 | locp = bp_location; | |
9718 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9719 | old_locp++) | |
74960c60 | 9720 | { |
876fa593 | 9721 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9722 | struct bp_location **loc2p; |
876fa593 | 9723 | |
4a64f543 MS |
9724 | /* Tells if 'old_loc' is found amoung the new locations. If |
9725 | not, we have to free it. */ | |
c7d46a38 | 9726 | int found_object = 0; |
20874c92 VP |
9727 | /* Tells if the location should remain inserted in the target. */ |
9728 | int keep_in_target = 0; | |
9729 | int removed = 0; | |
876fa593 | 9730 | |
4a64f543 MS |
9731 | /* Skip LOCP entries which will definitely never be needed. |
9732 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 9733 | while (locp < bp_location + bp_location_count |
c7d46a38 | 9734 | && (*locp)->address < old_loc->address) |
876fa593 | 9735 | locp++; |
c7d46a38 PA |
9736 | |
9737 | for (loc2p = locp; | |
9738 | (loc2p < bp_location + bp_location_count | |
9739 | && (*loc2p)->address == old_loc->address); | |
9740 | loc2p++) | |
9741 | { | |
9742 | if (*loc2p == old_loc) | |
9743 | { | |
9744 | found_object = 1; | |
9745 | break; | |
9746 | } | |
9747 | } | |
74960c60 | 9748 | |
4a64f543 MS |
9749 | /* If this location is no longer present, and inserted, look if |
9750 | there's maybe a new location at the same address. If so, | |
9751 | mark that one inserted, and don't remove this one. This is | |
9752 | needed so that we don't have a time window where a breakpoint | |
9753 | at certain location is not inserted. */ | |
74960c60 | 9754 | |
876fa593 | 9755 | if (old_loc->inserted) |
0d381245 | 9756 | { |
4a64f543 MS |
9757 | /* If the location is inserted now, we might have to remove |
9758 | it. */ | |
74960c60 | 9759 | |
876fa593 | 9760 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 9761 | { |
4a64f543 MS |
9762 | /* The location is still present in the location list, |
9763 | and still should be inserted. Don't do anything. */ | |
20874c92 | 9764 | keep_in_target = 1; |
74960c60 VP |
9765 | } |
9766 | else | |
9767 | { | |
4a64f543 MS |
9768 | /* The location is either no longer present, or got |
9769 | disabled. See if there's another location at the | |
9770 | same address, in which case we don't need to remove | |
9771 | this one from the target. */ | |
876fa593 | 9772 | |
2bdf28a0 | 9773 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9774 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9775 | { | |
876fa593 | 9776 | for (loc2p = locp; |
c7d46a38 PA |
9777 | (loc2p < bp_location + bp_location_count |
9778 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9779 | loc2p++) |
9780 | { | |
9781 | struct bp_location *loc2 = *loc2p; | |
9782 | ||
2d134ed3 | 9783 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9784 | { |
9785 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
9786 | Duplicates check below will fix up this |
9787 | later. */ | |
c7d46a38 | 9788 | loc2->duplicate = 0; |
85d721b8 PA |
9789 | |
9790 | /* Read watchpoint locations are switched to | |
9791 | access watchpoints, if the former are not | |
9792 | supported, but the latter are. */ | |
9793 | if (is_hardware_watchpoint (old_loc->owner)) | |
9794 | { | |
9795 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9796 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9797 | } | |
9798 | ||
c7d46a38 PA |
9799 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9800 | { | |
9801 | loc2->inserted = 1; | |
9802 | loc2->target_info = old_loc->target_info; | |
9803 | keep_in_target = 1; | |
9804 | break; | |
9805 | } | |
876fa593 JK |
9806 | } |
9807 | } | |
9808 | } | |
74960c60 VP |
9809 | } |
9810 | ||
20874c92 VP |
9811 | if (!keep_in_target) |
9812 | { | |
876fa593 | 9813 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 9814 | { |
4a64f543 MS |
9815 | /* This is just about all we can do. We could keep |
9816 | this location on the global list, and try to | |
9817 | remove it next time, but there's no particular | |
9818 | reason why we will succeed next time. | |
20874c92 | 9819 | |
4a64f543 MS |
9820 | Note that at this point, old_loc->owner is still |
9821 | valid, as delete_breakpoint frees the breakpoint | |
9822 | only after calling us. */ | |
3e43a32a MS |
9823 | printf_filtered (_("warning: Error removing " |
9824 | "breakpoint %d\n"), | |
876fa593 | 9825 | old_loc->owner->number); |
20874c92 VP |
9826 | } |
9827 | removed = 1; | |
9828 | } | |
0d381245 | 9829 | } |
74960c60 VP |
9830 | |
9831 | if (!found_object) | |
1c5cfe86 | 9832 | { |
db82e815 PA |
9833 | if (removed && non_stop |
9834 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9835 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9836 | { |
db82e815 PA |
9837 | /* This location was removed from the target. In |
9838 | non-stop mode, a race condition is possible where | |
9839 | we've removed a breakpoint, but stop events for that | |
9840 | breakpoint are already queued and will arrive later. | |
9841 | We apply an heuristic to be able to distinguish such | |
9842 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9843 | breakpoint location for a bit, and will retire it | |
9844 | after we see some number of events. The theory here | |
9845 | is that reporting of events should, "on the average", | |
9846 | be fair, so after a while we'll see events from all | |
9847 | threads that have anything of interest, and no longer | |
9848 | need to keep this breakpoint location around. We | |
9849 | don't hold locations forever so to reduce chances of | |
9850 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9851 | SIGTRAP. | |
9852 | ||
9853 | The heuristic failing can be disastrous on | |
9854 | decr_pc_after_break targets. | |
9855 | ||
9856 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9857 | if we fail to recognize a late breakpoint SIGTRAP, | |
9858 | because events_till_retirement has reached 0 too | |
9859 | soon, we'll fail to do the PC adjustment, and report | |
9860 | a random SIGTRAP to the user. When the user resumes | |
9861 | the inferior, it will most likely immediately crash | |
2dec564e | 9862 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9863 | corrupted, because of being resumed e.g., in the |
9864 | middle of a multi-byte instruction, or skipped a | |
9865 | one-byte instruction. This was actually seen happen | |
9866 | on native x86-linux, and should be less rare on | |
9867 | targets that do not support new thread events, like | |
9868 | remote, due to the heuristic depending on | |
9869 | thread_count. | |
9870 | ||
9871 | Mistaking a random SIGTRAP for a breakpoint trap | |
9872 | causes similar symptoms (PC adjustment applied when | |
9873 | it shouldn't), but then again, playing with SIGTRAPs | |
9874 | behind the debugger's back is asking for trouble. | |
9875 | ||
9876 | Since hardware watchpoint traps are always | |
9877 | distinguishable from other traps, so we don't need to | |
9878 | apply keep hardware watchpoint moribund locations | |
9879 | around. We simply always ignore hardware watchpoint | |
9880 | traps we can no longer explain. */ | |
9881 | ||
876fa593 JK |
9882 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9883 | old_loc->owner = NULL; | |
20874c92 | 9884 | |
876fa593 | 9885 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9886 | } |
9887 | else | |
f431efe5 PA |
9888 | { |
9889 | old_loc->owner = NULL; | |
9890 | decref_bp_location (&old_loc); | |
9891 | } | |
20874c92 | 9892 | } |
74960c60 | 9893 | } |
1c5cfe86 | 9894 | |
2d134ed3 PA |
9895 | /* Rescan breakpoints at the same address and section, marking the |
9896 | first one as "first" and any others as "duplicates". This is so | |
9897 | that the bpt instruction is only inserted once. If we have a | |
9898 | permanent breakpoint at the same place as BPT, make that one the | |
9899 | official one, and the rest as duplicates. Permanent breakpoints | |
9900 | are sorted first for the same address. | |
9901 | ||
9902 | Do the same for hardware watchpoints, but also considering the | |
9903 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9904 | |
2d134ed3 PA |
9905 | bp_loc_first = NULL; |
9906 | wp_loc_first = NULL; | |
9907 | awp_loc_first = NULL; | |
9908 | rwp_loc_first = NULL; | |
876fa593 | 9909 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9910 | { |
4a64f543 MS |
9911 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
9912 | non-NULL. */ | |
876fa593 | 9913 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9914 | struct bp_location **loc_first_p; |
876fa593 JK |
9915 | |
9916 | if (b->enable_state == bp_disabled | |
9917 | || b->enable_state == bp_call_disabled | |
9918 | || b->enable_state == bp_startup_disabled | |
9919 | || !loc->enabled | |
9920 | || loc->shlib_disabled | |
15c3d785 | 9921 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9922 | || is_tracepoint (b)) |
876fa593 JK |
9923 | continue; |
9924 | ||
9925 | /* Permanent breakpoint should always be inserted. */ | |
9926 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9927 | internal_error (__FILE__, __LINE__, | |
9928 | _("allegedly permanent breakpoint is not " | |
9929 | "actually inserted")); | |
9930 | ||
2d134ed3 PA |
9931 | if (b->type == bp_hardware_watchpoint) |
9932 | loc_first_p = &wp_loc_first; | |
9933 | else if (b->type == bp_read_watchpoint) | |
9934 | loc_first_p = &rwp_loc_first; | |
9935 | else if (b->type == bp_access_watchpoint) | |
9936 | loc_first_p = &awp_loc_first; | |
9937 | else | |
9938 | loc_first_p = &bp_loc_first; | |
9939 | ||
9940 | if (*loc_first_p == NULL | |
9941 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9942 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9943 | { |
2d134ed3 | 9944 | *loc_first_p = loc; |
876fa593 JK |
9945 | loc->duplicate = 0; |
9946 | continue; | |
9947 | } | |
9948 | ||
9949 | loc->duplicate = 1; | |
9950 | ||
2d134ed3 PA |
9951 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9952 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9953 | internal_error (__FILE__, __LINE__, |
9954 | _("another breakpoint was inserted on top of " | |
9955 | "a permanent breakpoint")); | |
0d381245 | 9956 | } |
74960c60 | 9957 | |
50c71eaf | 9958 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9959 | && (have_live_inferiors () |
2567c7d9 | 9960 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9961 | insert_breakpoint_locations (); |
f7545552 TT |
9962 | |
9963 | do_cleanups (cleanups); | |
74960c60 VP |
9964 | } |
9965 | ||
20874c92 VP |
9966 | void |
9967 | breakpoint_retire_moribund (void) | |
9968 | { | |
9969 | struct bp_location *loc; | |
9970 | int ix; | |
9971 | ||
9972 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9973 | if (--(loc->events_till_retirement) == 0) | |
9974 | { | |
f431efe5 | 9975 | decref_bp_location (&loc); |
20874c92 VP |
9976 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
9977 | --ix; | |
9978 | } | |
9979 | } | |
9980 | ||
74960c60 | 9981 | static void |
b60e7edf | 9982 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9983 | { |
9984 | struct gdb_exception e; | |
cc59ec59 | 9985 | |
74960c60 | 9986 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9987 | update_global_location_list (inserting); |
0d381245 VP |
9988 | } |
9989 | ||
f431efe5 PA |
9990 | /* Clear BKP from a BPS. */ |
9991 | ||
a474d7c2 | 9992 | static void |
f431efe5 | 9993 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
9994 | { |
9995 | bpstat bs; | |
cc59ec59 | 9996 | |
a474d7c2 | 9997 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 9998 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
9999 | { |
10000 | bs->breakpoint_at = NULL; | |
10001 | bs->old_val = NULL; | |
10002 | /* bs->commands will be freed later. */ | |
10003 | } | |
10004 | } | |
10005 | ||
10006 | /* Callback for iterate_over_threads. */ | |
10007 | static int | |
f431efe5 | 10008 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 10009 | { |
f431efe5 | 10010 | struct breakpoint *bpt = data; |
cc59ec59 | 10011 | |
16c381f0 | 10012 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
10013 | return 0; |
10014 | } | |
10015 | ||
53a5351d | 10016 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 10017 | structures. */ |
c906108c SS |
10018 | |
10019 | void | |
fba45db2 | 10020 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 10021 | { |
52f0bd74 | 10022 | struct breakpoint *b; |
c906108c | 10023 | |
8a3fe4f8 | 10024 | gdb_assert (bpt != NULL); |
c906108c | 10025 | |
4a64f543 MS |
10026 | /* Has this bp already been deleted? This can happen because |
10027 | multiple lists can hold pointers to bp's. bpstat lists are | |
10028 | especial culprits. | |
10029 | ||
10030 | One example of this happening is a watchpoint's scope bp. When | |
10031 | the scope bp triggers, we notice that the watchpoint is out of | |
10032 | scope, and delete it. We also delete its scope bp. But the | |
10033 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
10034 | That bpstat is then checked for auto-deleting bp's, which are | |
10035 | deleted. | |
10036 | ||
10037 | A real solution to this problem might involve reference counts in | |
10038 | bp's, and/or giving them pointers back to their referencing | |
10039 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
10040 | storage when no more references were extent. A cheaper bandaid | |
10041 | was chosen. */ | |
c906108c SS |
10042 | if (bpt->type == bp_none) |
10043 | return; | |
10044 | ||
4a64f543 MS |
10045 | /* At least avoid this stale reference until the reference counting |
10046 | of breakpoints gets resolved. */ | |
e5a0a904 JK |
10047 | if (bpt->related_breakpoint != NULL) |
10048 | { | |
10049 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
10050 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
10051 | bpt->related_breakpoint->related_breakpoint = NULL; | |
10052 | bpt->related_breakpoint = NULL; | |
10053 | } | |
10054 | ||
383f836e | 10055 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 10056 | |
c906108c SS |
10057 | if (breakpoint_chain == bpt) |
10058 | breakpoint_chain = bpt->next; | |
10059 | ||
c906108c SS |
10060 | ALL_BREAKPOINTS (b) |
10061 | if (b->next == bpt) | |
c5aa993b JM |
10062 | { |
10063 | b->next = bpt->next; | |
10064 | break; | |
10065 | } | |
c906108c | 10066 | |
9add0f1b | 10067 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
10068 | xfree (bpt->cond_string); |
10069 | xfree (bpt->cond_exp); | |
10070 | xfree (bpt->addr_string); | |
10071 | xfree (bpt->exp); | |
10072 | xfree (bpt->exp_string); | |
d63d0675 | 10073 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
10074 | value_free (bpt->val); |
10075 | xfree (bpt->source_file); | |
10076 | xfree (bpt->exec_pathname); | |
a96d9b2e | 10077 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 10078 | |
f431efe5 PA |
10079 | |
10080 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
10081 | been freed. */ | |
10082 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
10083 | in all threeds for now. Note that we cannot just remove bpstats | |
10084 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
10085 | commands are associated with the bpstat; if we remove it here, | |
10086 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
10087 | event-top.c won't do anything, and temporary breakpoints with | |
10088 | commands won't work. */ | |
10089 | ||
10090 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
10091 | ||
4a64f543 MS |
10092 | /* Now that breakpoint is removed from breakpoint list, update the |
10093 | global location list. This will remove locations that used to | |
10094 | belong to this breakpoint. Do this before freeing the breakpoint | |
10095 | itself, since remove_breakpoint looks at location's owner. It | |
10096 | might be better design to have location completely | |
10097 | self-contained, but it's not the case now. */ | |
b60e7edf | 10098 | update_global_location_list (0); |
74960c60 VP |
10099 | |
10100 | ||
4a64f543 MS |
10101 | /* On the chance that someone will soon try again to delete this |
10102 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
10103 | bpt->type = bp_none; |
10104 | ||
b8c9b27d | 10105 | xfree (bpt); |
c906108c SS |
10106 | } |
10107 | ||
4d6140d9 AC |
10108 | static void |
10109 | do_delete_breakpoint_cleanup (void *b) | |
10110 | { | |
10111 | delete_breakpoint (b); | |
10112 | } | |
10113 | ||
10114 | struct cleanup * | |
10115 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
10116 | { | |
10117 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
10118 | } | |
10119 | ||
95a42b64 TT |
10120 | /* A callback for map_breakpoint_numbers that calls |
10121 | delete_breakpoint. */ | |
10122 | ||
10123 | static void | |
10124 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
10125 | { | |
10126 | delete_breakpoint (b); | |
10127 | } | |
10128 | ||
c906108c | 10129 | void |
fba45db2 | 10130 | delete_command (char *arg, int from_tty) |
c906108c | 10131 | { |
35df4500 | 10132 | struct breakpoint *b, *b_tmp; |
c906108c | 10133 | |
ea9365bb TT |
10134 | dont_repeat (); |
10135 | ||
c906108c SS |
10136 | if (arg == 0) |
10137 | { | |
10138 | int breaks_to_delete = 0; | |
10139 | ||
10140 | /* Delete all breakpoints if no argument. | |
4a64f543 MS |
10141 | Do not delete internal or call-dummy breakpoints, these have |
10142 | to be deleted with an explicit breakpoint number argument. */ | |
c5aa993b JM |
10143 | ALL_BREAKPOINTS (b) |
10144 | { | |
059fb39f | 10145 | if (b->type != bp_call_dummy |
aa7d318d | 10146 | && b->type != bp_std_terminate |
059fb39f | 10147 | && b->type != bp_shlib_event |
4efc6507 | 10148 | && b->type != bp_jit_event |
059fb39f PM |
10149 | && b->type != bp_thread_event |
10150 | && b->type != bp_overlay_event | |
0fd8e87f | 10151 | && b->type != bp_longjmp_master |
aa7d318d | 10152 | && b->type != bp_std_terminate_master |
186c406b | 10153 | && b->type != bp_exception_master |
059fb39f | 10154 | && b->number >= 0) |
973d738b DJ |
10155 | { |
10156 | breaks_to_delete = 1; | |
10157 | break; | |
10158 | } | |
c5aa993b | 10159 | } |
c906108c SS |
10160 | |
10161 | /* Ask user only if there are some breakpoints to delete. */ | |
10162 | if (!from_tty | |
e2e0b3e5 | 10163 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 10164 | { |
35df4500 | 10165 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10166 | { |
059fb39f | 10167 | if (b->type != bp_call_dummy |
aa7d318d | 10168 | && b->type != bp_std_terminate |
059fb39f PM |
10169 | && b->type != bp_shlib_event |
10170 | && b->type != bp_thread_event | |
4efc6507 | 10171 | && b->type != bp_jit_event |
059fb39f | 10172 | && b->type != bp_overlay_event |
0fd8e87f | 10173 | && b->type != bp_longjmp_master |
aa7d318d | 10174 | && b->type != bp_std_terminate_master |
186c406b | 10175 | && b->type != bp_exception_master |
059fb39f | 10176 | && b->number >= 0) |
c5aa993b JM |
10177 | delete_breakpoint (b); |
10178 | } | |
c906108c SS |
10179 | } |
10180 | } | |
10181 | else | |
95a42b64 | 10182 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10183 | } |
10184 | ||
0d381245 VP |
10185 | static int |
10186 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10187 | { |
0d381245 VP |
10188 | for (; loc; loc = loc->next) |
10189 | if (!loc->shlib_disabled) | |
10190 | return 0; | |
10191 | return 1; | |
fe3f5fa8 VP |
10192 | } |
10193 | ||
776592bf DE |
10194 | /* Subroutine of update_breakpoint_locations to simplify it. |
10195 | Return non-zero if multiple fns in list LOC have the same name. | |
10196 | Null names are ignored. */ | |
10197 | ||
10198 | static int | |
10199 | ambiguous_names_p (struct bp_location *loc) | |
10200 | { | |
10201 | struct bp_location *l; | |
10202 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10203 | (int (*) (const void *, |
10204 | const void *)) streq, | |
776592bf DE |
10205 | NULL, xcalloc, xfree); |
10206 | ||
10207 | for (l = loc; l != NULL; l = l->next) | |
10208 | { | |
10209 | const char **slot; | |
10210 | const char *name = l->function_name; | |
10211 | ||
10212 | /* Allow for some names to be NULL, ignore them. */ | |
10213 | if (name == NULL) | |
10214 | continue; | |
10215 | ||
10216 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10217 | INSERT); | |
4a64f543 MS |
10218 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10219 | returns NULL. */ | |
776592bf DE |
10220 | if (*slot != NULL) |
10221 | { | |
10222 | htab_delete (htab); | |
10223 | return 1; | |
10224 | } | |
10225 | *slot = name; | |
10226 | } | |
10227 | ||
10228 | htab_delete (htab); | |
10229 | return 0; | |
10230 | } | |
10231 | ||
0fb4aa4b PA |
10232 | /* When symbols change, it probably means the sources changed as well, |
10233 | and it might mean the static tracepoint markers are no longer at | |
10234 | the same address or line numbers they used to be at last we | |
10235 | checked. Losing your static tracepoints whenever you rebuild is | |
10236 | undesirable. This function tries to resync/rematch gdb static | |
10237 | tracepoints with the markers on the target, for static tracepoints | |
10238 | that have not been set by marker id. Static tracepoint that have | |
10239 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10240 | The heuristic is: | |
10241 | ||
10242 | 1) For a tracepoint set at a specific address, look for a marker at | |
10243 | the old PC. If one is found there, assume to be the same marker. | |
10244 | If the name / string id of the marker found is different from the | |
10245 | previous known name, assume that means the user renamed the marker | |
10246 | in the sources, and output a warning. | |
10247 | ||
10248 | 2) For a tracepoint set at a given line number, look for a marker | |
10249 | at the new address of the old line number. If one is found there, | |
10250 | assume to be the same marker. If the name / string id of the | |
10251 | marker found is different from the previous known name, assume that | |
10252 | means the user renamed the marker in the sources, and output a | |
10253 | warning. | |
10254 | ||
10255 | 3) If a marker is no longer found at the same address or line, it | |
10256 | may mean the marker no longer exists. But it may also just mean | |
10257 | the code changed a bit. Maybe the user added a few lines of code | |
10258 | that made the marker move up or down (in line number terms). Ask | |
10259 | the target for info about the marker with the string id as we knew | |
10260 | it. If found, update line number and address in the matching | |
10261 | static tracepoint. This will get confused if there's more than one | |
10262 | marker with the same ID (possible in UST, although unadvised | |
10263 | precisely because it confuses tools). */ | |
10264 | ||
10265 | static struct symtab_and_line | |
10266 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10267 | { | |
10268 | struct static_tracepoint_marker marker; | |
10269 | CORE_ADDR pc; | |
10270 | int i; | |
10271 | ||
10272 | pc = sal.pc; | |
10273 | if (sal.line) | |
10274 | find_line_pc (sal.symtab, sal.line, &pc); | |
10275 | ||
10276 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10277 | { | |
10278 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10279 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10280 | b->number, | |
10281 | b->static_trace_marker_id, marker.str_id); | |
10282 | ||
10283 | xfree (b->static_trace_marker_id); | |
10284 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10285 | release_static_tracepoint_marker (&marker); | |
10286 | ||
10287 | return sal; | |
10288 | } | |
10289 | ||
10290 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10291 | by string ID. */ | |
10292 | if (!sal.explicit_pc | |
10293 | && sal.line != 0 | |
10294 | && sal.symtab != NULL | |
10295 | && b->static_trace_marker_id != NULL) | |
10296 | { | |
10297 | VEC(static_tracepoint_marker_p) *markers; | |
10298 | ||
10299 | markers | |
10300 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10301 | ||
10302 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10303 | { | |
10304 | struct symtab_and_line sal; | |
10305 | struct symbol *sym; | |
10306 | struct static_tracepoint_marker *marker; | |
10307 | ||
10308 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10309 | ||
10310 | xfree (b->static_trace_marker_id); | |
10311 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10312 | ||
10313 | warning (_("marker for static tracepoint %d (%s) not " | |
10314 | "found at previous line number"), | |
10315 | b->number, b->static_trace_marker_id); | |
10316 | ||
10317 | init_sal (&sal); | |
10318 | ||
10319 | sal.pc = marker->address; | |
10320 | ||
10321 | sal = find_pc_line (marker->address, 0); | |
10322 | sym = find_pc_sect_function (marker->address, NULL); | |
10323 | ui_out_text (uiout, "Now in "); | |
10324 | if (sym) | |
10325 | { | |
10326 | ui_out_field_string (uiout, "func", | |
10327 | SYMBOL_PRINT_NAME (sym)); | |
10328 | ui_out_text (uiout, " at "); | |
10329 | } | |
10330 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10331 | ui_out_text (uiout, ":"); | |
10332 | ||
10333 | if (ui_out_is_mi_like_p (uiout)) | |
10334 | { | |
10335 | char *fullname = symtab_to_fullname (sal.symtab); | |
10336 | ||
10337 | if (fullname) | |
10338 | ui_out_field_string (uiout, "fullname", fullname); | |
10339 | } | |
10340 | ||
10341 | ui_out_field_int (uiout, "line", sal.line); | |
10342 | ui_out_text (uiout, "\n"); | |
10343 | ||
10344 | b->line_number = sal.line; | |
10345 | ||
10346 | xfree (b->source_file); | |
10347 | if (sym) | |
10348 | b->source_file = xstrdup (sal.symtab->filename); | |
10349 | else | |
10350 | b->source_file = NULL; | |
10351 | ||
10352 | xfree (b->addr_string); | |
10353 | b->addr_string = xstrprintf ("%s:%d", | |
10354 | sal.symtab->filename, b->line_number); | |
10355 | ||
10356 | /* Might be nice to check if function changed, and warn if | |
10357 | so. */ | |
10358 | ||
10359 | release_static_tracepoint_marker (marker); | |
10360 | } | |
10361 | } | |
10362 | return sal; | |
10363 | } | |
10364 | ||
fe3f5fa8 | 10365 | static void |
0d381245 VP |
10366 | update_breakpoint_locations (struct breakpoint *b, |
10367 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
10368 | { |
10369 | int i; | |
10370 | char *s; | |
0d381245 VP |
10371 | struct bp_location *existing_locations = b->loc; |
10372 | ||
4a64f543 MS |
10373 | /* If there's no new locations, and all existing locations are |
10374 | pending, don't do anything. This optimizes the common case where | |
10375 | all locations are in the same shared library, that was unloaded. | |
10376 | We'd like to retain the location, so that when the library is | |
10377 | loaded again, we don't loose the enabled/disabled status of the | |
10378 | individual locations. */ | |
0d381245 | 10379 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10380 | return; |
10381 | ||
fe3f5fa8 VP |
10382 | b->loc = NULL; |
10383 | ||
0d381245 | 10384 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10385 | { |
0d381245 | 10386 | struct bp_location *new_loc = |
39d61571 | 10387 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10388 | |
0d381245 VP |
10389 | /* Reparse conditions, they might contain references to the |
10390 | old symtab. */ | |
10391 | if (b->cond_string != NULL) | |
10392 | { | |
10393 | struct gdb_exception e; | |
fe3f5fa8 | 10394 | |
0d381245 VP |
10395 | s = b->cond_string; |
10396 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10397 | { | |
10398 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10399 | 0); | |
10400 | } | |
10401 | if (e.reason < 0) | |
10402 | { | |
3e43a32a MS |
10403 | warning (_("failed to reevaluate condition " |
10404 | "for breakpoint %d: %s"), | |
0d381245 VP |
10405 | b->number, e.message); |
10406 | new_loc->enabled = 0; | |
10407 | } | |
10408 | } | |
fe3f5fa8 | 10409 | |
0d381245 VP |
10410 | if (b->source_file != NULL) |
10411 | xfree (b->source_file); | |
10412 | if (sals.sals[i].symtab == NULL) | |
10413 | b->source_file = NULL; | |
10414 | else | |
1b36a34b | 10415 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10416 | |
0d381245 VP |
10417 | if (b->line_number == 0) |
10418 | b->line_number = sals.sals[i].line; | |
10419 | } | |
fe3f5fa8 | 10420 | |
514f746b AR |
10421 | /* Update locations of permanent breakpoints. */ |
10422 | if (b->enable_state == bp_permanent) | |
10423 | make_breakpoint_permanent (b); | |
10424 | ||
4a64f543 MS |
10425 | /* If possible, carry over 'disable' status from existing |
10426 | breakpoints. */ | |
0d381245 VP |
10427 | { |
10428 | struct bp_location *e = existing_locations; | |
776592bf DE |
10429 | /* If there are multiple breakpoints with the same function name, |
10430 | e.g. for inline functions, comparing function names won't work. | |
10431 | Instead compare pc addresses; this is just a heuristic as things | |
10432 | may have moved, but in practice it gives the correct answer | |
10433 | often enough until a better solution is found. */ | |
10434 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10435 | ||
0d381245 VP |
10436 | for (; e; e = e->next) |
10437 | { | |
10438 | if (!e->enabled && e->function_name) | |
10439 | { | |
10440 | struct bp_location *l = b->loc; | |
776592bf DE |
10441 | if (have_ambiguous_names) |
10442 | { | |
10443 | for (; l; l = l->next) | |
6c95b8df PA |
10444 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
10445 | l->pspace->aspace, l->address)) | |
776592bf DE |
10446 | { |
10447 | l->enabled = 0; | |
10448 | break; | |
10449 | } | |
10450 | } | |
10451 | else | |
10452 | { | |
10453 | for (; l; l = l->next) | |
10454 | if (l->function_name | |
10455 | && strcmp (e->function_name, l->function_name) == 0) | |
10456 | { | |
10457 | l->enabled = 0; | |
10458 | break; | |
10459 | } | |
10460 | } | |
0d381245 VP |
10461 | } |
10462 | } | |
10463 | } | |
fe3f5fa8 | 10464 | |
b60e7edf | 10465 | update_global_location_list (1); |
fe3f5fa8 VP |
10466 | } |
10467 | ||
c906108c SS |
10468 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
10469 | The value we return ends up being the return value from catch_errors. | |
10470 | Unused in this case. */ | |
10471 | ||
10472 | static int | |
4efb68b1 | 10473 | breakpoint_re_set_one (void *bint) |
c906108c | 10474 | { |
4a64f543 | 10475 | /* Get past catch_errs. */ |
53a5351d | 10476 | struct breakpoint *b = (struct breakpoint *) bint; |
fe3f5fa8 VP |
10477 | int not_found = 0; |
10478 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
10479 | struct symtabs_and_lines sals = {0}; |
10480 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 10481 | char *s; |
fe3f5fa8 | 10482 | struct gdb_exception e; |
6c95b8df | 10483 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
0fb4aa4b | 10484 | int marker_spec = 0; |
c906108c SS |
10485 | |
10486 | switch (b->type) | |
10487 | { | |
10488 | case bp_none: | |
8a3fe4f8 | 10489 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 10490 | b->number); |
c906108c SS |
10491 | return 0; |
10492 | case bp_breakpoint: | |
10493 | case bp_hardware_breakpoint: | |
1042e4c0 | 10494 | case bp_tracepoint: |
7a697b8d | 10495 | case bp_fast_tracepoint: |
0fb4aa4b | 10496 | case bp_static_tracepoint: |
8bea4e01 UW |
10497 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10498 | if (b->enable_state == bp_startup_disabled) | |
10499 | return 0; | |
10500 | ||
c906108c SS |
10501 | if (b->addr_string == NULL) |
10502 | { | |
4a64f543 | 10503 | /* Anything without a string can't be re-set. */ |
c906108c SS |
10504 | delete_breakpoint (b); |
10505 | return 0; | |
10506 | } | |
c906108c | 10507 | |
c906108c SS |
10508 | input_radix = b->input_radix; |
10509 | s = b->addr_string; | |
6c95b8df PA |
10510 | |
10511 | save_current_space_and_thread (); | |
10512 | switch_to_program_space_and_thread (b->pspace); | |
10513 | ||
0fb4aa4b PA |
10514 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); |
10515 | ||
385d04dc | 10516 | set_language (b->language); |
fe3f5fa8 | 10517 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 10518 | { |
0fb4aa4b PA |
10519 | if (marker_spec) |
10520 | { | |
10521 | sals = decode_static_tracepoint_spec (&s); | |
10522 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10523 | { | |
10524 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10525 | sals.nelts = 1; | |
10526 | } | |
10527 | else | |
10528 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10529 | } | |
10530 | else | |
3e43a32a MS |
10531 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, |
10532 | (char ***) NULL, not_found_ptr); | |
fe3f5fa8 VP |
10533 | } |
10534 | if (e.reason < 0) | |
10535 | { | |
10536 | int not_found_and_ok = 0; | |
4a64f543 MS |
10537 | /* For pending breakpoints, it's expected that parsing will |
10538 | fail until the right shared library is loaded. User has | |
10539 | already told to create pending breakpoints and don't need | |
10540 | extra messages. If breakpoint is in bp_shlib_disabled | |
10541 | state, then user already saw the message about that | |
10542 | breakpoint being disabled, and don't want to see more | |
10543 | errors. */ | |
0d381245 VP |
10544 | if (not_found |
10545 | && (b->condition_not_parsed | |
10546 | || (b->loc && b->loc->shlib_disabled) | |
10547 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
10548 | not_found_and_ok = 1; |
10549 | ||
10550 | if (!not_found_and_ok) | |
c906108c | 10551 | { |
fe3f5fa8 VP |
10552 | /* We surely don't want to warn about the same breakpoint |
10553 | 10 times. One solution, implemented here, is disable | |
10554 | the breakpoint on error. Another solution would be to | |
10555 | have separate 'warning emitted' flag. Since this | |
10556 | happens only when a binary has changed, I don't know | |
10557 | which approach is better. */ | |
10558 | b->enable_state = bp_disabled; | |
10559 | throw_exception (e); | |
c906108c | 10560 | } |
fe3f5fa8 | 10561 | } |
c906108c | 10562 | |
6c95b8df | 10563 | if (!not_found) |
fe3f5fa8 | 10564 | { |
6c95b8df PA |
10565 | gdb_assert (sals.nelts == 1); |
10566 | ||
10567 | resolve_sal_pc (&sals.sals[0]); | |
10568 | if (b->condition_not_parsed && s && s[0]) | |
10569 | { | |
10570 | char *cond_string = 0; | |
10571 | int thread = -1; | |
10572 | int task = 0; | |
10573 | ||
10574 | find_condition_and_thread (s, sals.sals[0].pc, | |
10575 | &cond_string, &thread, &task); | |
10576 | if (cond_string) | |
10577 | b->cond_string = cond_string; | |
10578 | b->thread = thread; | |
10579 | b->task = task; | |
10580 | b->condition_not_parsed = 0; | |
10581 | } | |
10582 | ||
0fb4aa4b PA |
10583 | if (b->type == bp_static_tracepoint && !marker_spec) |
10584 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
10585 | ||
6c95b8df | 10586 | expanded = expand_line_sal_maybe (sals.sals[0]); |
fe3f5fa8 | 10587 | } |
6c95b8df PA |
10588 | |
10589 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 10590 | update_breakpoint_locations (b, expanded); |
c906108c SS |
10591 | break; |
10592 | ||
10593 | case bp_watchpoint: | |
10594 | case bp_hardware_watchpoint: | |
10595 | case bp_read_watchpoint: | |
10596 | case bp_access_watchpoint: | |
4a64f543 MS |
10597 | /* Watchpoint can be either on expression using entirely global |
10598 | variables, or it can be on local variables. | |
10599 | ||
10600 | Watchpoints of the first kind are never auto-deleted, and | |
10601 | even persist across program restarts. Since they can use | |
10602 | variables from shared libraries, we need to reparse | |
10603 | expression as libraries are loaded and unloaded. | |
10604 | ||
10605 | Watchpoints on local variables can also change meaning as | |
10606 | result of solib event. For example, if a watchpoint uses | |
10607 | both a local and a global variables in expression, it's a | |
10608 | local watchpoint, but unloading of a shared library will make | |
10609 | the expression invalid. This is not a very common use case, | |
10610 | but we still re-evaluate expression, to avoid surprises to | |
10611 | the user. | |
0b3de036 VP |
10612 | |
10613 | Note that for local watchpoints, we re-evaluate it only if | |
10614 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
10615 | the watchpoint is out of scope and will be deleted soon. In |
10616 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
10617 | |
10618 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 10619 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
10620 | |
10621 | Don't do anything about disabled watchpoints, since they will | |
10622 | be reevaluated again when enabled. */ | |
a5606eee | 10623 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 10624 | break; |
c5aa993b JM |
10625 | /* We needn't really do anything to reset these, since the mask |
10626 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 10627 | loaded. */ |
ce78b96d | 10628 | case bp_catchpoint: |
c906108c | 10629 | break; |
c5aa993b | 10630 | |
c906108c | 10631 | default: |
a3f17187 | 10632 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 10633 | /* fall through */ |
0fd8e87f UW |
10634 | /* Delete overlay event and longjmp master breakpoints; they will be |
10635 | reset later by breakpoint_re_set. */ | |
1900040c | 10636 | case bp_overlay_event: |
0fd8e87f | 10637 | case bp_longjmp_master: |
aa7d318d | 10638 | case bp_std_terminate_master: |
186c406b | 10639 | case bp_exception_master: |
c906108c SS |
10640 | delete_breakpoint (b); |
10641 | break; | |
10642 | ||
c5aa993b JM |
10643 | /* This breakpoint is special, it's set up when the inferior |
10644 | starts and we really don't want to touch it. */ | |
c906108c SS |
10645 | case bp_shlib_event: |
10646 | ||
c4093a6a JM |
10647 | /* Like bp_shlib_event, this breakpoint type is special. |
10648 | Once it is set up, we do not want to touch it. */ | |
10649 | case bp_thread_event: | |
10650 | ||
4a64f543 MS |
10651 | /* Keep temporary breakpoints, which can be encountered when we |
10652 | step over a dlopen call and SOLIB_ADD is resetting the | |
10653 | breakpoints. Otherwise these should have been blown away via | |
10654 | the cleanup chain or by breakpoint_init_inferior when we | |
10655 | rerun the executable. */ | |
c906108c SS |
10656 | case bp_until: |
10657 | case bp_finish: | |
10658 | case bp_watchpoint_scope: | |
10659 | case bp_call_dummy: | |
aa7d318d | 10660 | case bp_std_terminate: |
c906108c | 10661 | case bp_step_resume: |
611c83ae PA |
10662 | case bp_longjmp: |
10663 | case bp_longjmp_resume: | |
186c406b TT |
10664 | case bp_exception: |
10665 | case bp_exception_resume: | |
4efc6507 | 10666 | case bp_jit_event: |
c906108c SS |
10667 | break; |
10668 | } | |
10669 | ||
6c95b8df | 10670 | do_cleanups (cleanups); |
c906108c SS |
10671 | return 0; |
10672 | } | |
10673 | ||
69de3c6a | 10674 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 10675 | void |
69de3c6a | 10676 | breakpoint_re_set (void) |
c906108c | 10677 | { |
35df4500 | 10678 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10679 | enum language save_language; |
10680 | int save_input_radix; | |
6c95b8df | 10681 | struct cleanup *old_chain; |
c5aa993b | 10682 | |
c906108c SS |
10683 | save_language = current_language->la_language; |
10684 | save_input_radix = input_radix; | |
6c95b8df PA |
10685 | old_chain = save_current_program_space (); |
10686 | ||
35df4500 | 10687 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10688 | { |
4a64f543 | 10689 | /* Format possible error msg. */ |
fe3f5fa8 | 10690 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
10691 | b->number); |
10692 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 10693 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 10694 | do_cleanups (cleanups); |
c5aa993b | 10695 | } |
c906108c SS |
10696 | set_language (save_language); |
10697 | input_radix = save_input_radix; | |
e62c965a | 10698 | |
0756c555 | 10699 | jit_breakpoint_re_set (); |
4efc6507 | 10700 | |
6c95b8df PA |
10701 | do_cleanups (old_chain); |
10702 | ||
af02033e PP |
10703 | create_overlay_event_breakpoint (); |
10704 | create_longjmp_master_breakpoint (); | |
10705 | create_std_terminate_master_breakpoint (); | |
186c406b | 10706 | create_exception_master_breakpoint (); |
c906108c SS |
10707 | } |
10708 | \f | |
c906108c SS |
10709 | /* Reset the thread number of this breakpoint: |
10710 | ||
10711 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 10712 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 10713 | void |
fba45db2 | 10714 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
10715 | { |
10716 | if (b->thread != -1) | |
10717 | { | |
39f77062 KB |
10718 | if (in_thread_list (inferior_ptid)) |
10719 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
10720 | |
10721 | /* We're being called after following a fork. The new fork is | |
10722 | selected as current, and unless this was a vfork will have a | |
10723 | different program space from the original thread. Reset that | |
10724 | as well. */ | |
10725 | b->loc->pspace = current_program_space; | |
c906108c SS |
10726 | } |
10727 | } | |
10728 | ||
03ac34d5 MS |
10729 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10730 | If from_tty is nonzero, it prints a message to that effect, | |
10731 | which ends with a period (no newline). */ | |
10732 | ||
c906108c | 10733 | void |
fba45db2 | 10734 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 10735 | { |
52f0bd74 | 10736 | struct breakpoint *b; |
c906108c SS |
10737 | |
10738 | if (count < 0) | |
10739 | count = 0; | |
10740 | ||
10741 | ALL_BREAKPOINTS (b) | |
10742 | if (b->number == bptnum) | |
c5aa993b | 10743 | { |
d77f58be SS |
10744 | if (is_tracepoint (b)) |
10745 | { | |
10746 | if (from_tty && count != 0) | |
10747 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
10748 | bptnum); | |
10749 | return; | |
10750 | } | |
10751 | ||
c5aa993b | 10752 | b->ignore_count = count; |
221ea385 KS |
10753 | if (from_tty) |
10754 | { | |
10755 | if (count == 0) | |
3e43a32a MS |
10756 | printf_filtered (_("Will stop next time " |
10757 | "breakpoint %d is reached."), | |
221ea385 KS |
10758 | bptnum); |
10759 | else if (count == 1) | |
a3f17187 | 10760 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10761 | bptnum); |
10762 | else | |
3e43a32a MS |
10763 | printf_filtered (_("Will ignore next %d " |
10764 | "crossings of breakpoint %d."), | |
221ea385 KS |
10765 | count, bptnum); |
10766 | } | |
c5aa993b | 10767 | breakpoints_changed (); |
383f836e | 10768 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10769 | return; |
10770 | } | |
c906108c | 10771 | |
8a3fe4f8 | 10772 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10773 | } |
10774 | ||
c906108c SS |
10775 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10776 | ||
10777 | static void | |
fba45db2 | 10778 | ignore_command (char *args, int from_tty) |
c906108c SS |
10779 | { |
10780 | char *p = args; | |
52f0bd74 | 10781 | int num; |
c906108c SS |
10782 | |
10783 | if (p == 0) | |
e2e0b3e5 | 10784 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10785 | |
c906108c | 10786 | num = get_number (&p); |
5c44784c | 10787 | if (num == 0) |
8a3fe4f8 | 10788 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10789 | if (*p == 0) |
8a3fe4f8 | 10790 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10791 | |
10792 | set_ignore_count (num, | |
10793 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10794 | from_tty); | |
221ea385 KS |
10795 | if (from_tty) |
10796 | printf_filtered ("\n"); | |
c906108c SS |
10797 | } |
10798 | \f | |
10799 | /* Call FUNCTION on each of the breakpoints | |
10800 | whose numbers are given in ARGS. */ | |
10801 | ||
10802 | static void | |
95a42b64 TT |
10803 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10804 | void *), | |
10805 | void *data) | |
c906108c | 10806 | { |
52f0bd74 AC |
10807 | int num; |
10808 | struct breakpoint *b, *tmp; | |
11cf8741 | 10809 | int match; |
197f0a60 | 10810 | struct get_number_or_range_state state; |
c906108c | 10811 | |
197f0a60 | 10812 | if (args == 0) |
e2e0b3e5 | 10813 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 10814 | |
197f0a60 TT |
10815 | init_number_or_range (&state, args); |
10816 | ||
10817 | while (!state.finished) | |
c906108c | 10818 | { |
197f0a60 TT |
10819 | char *p = state.string; |
10820 | ||
11cf8741 | 10821 | match = 0; |
c5aa993b | 10822 | |
197f0a60 | 10823 | num = get_number_or_range (&state); |
5c44784c | 10824 | if (num == 0) |
c5aa993b | 10825 | { |
8a3fe4f8 | 10826 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10827 | } |
10828 | else | |
10829 | { | |
10830 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10831 | if (b->number == num) | |
10832 | { | |
10833 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 10834 | match = 1; |
95a42b64 | 10835 | function (b, data); |
5c44784c | 10836 | if (related_breakpoint) |
95a42b64 | 10837 | function (related_breakpoint, data); |
11cf8741 | 10838 | break; |
5c44784c | 10839 | } |
11cf8741 | 10840 | if (match == 0) |
a3f17187 | 10841 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10842 | } |
c906108c SS |
10843 | } |
10844 | } | |
10845 | ||
0d381245 VP |
10846 | static struct bp_location * |
10847 | find_location_by_number (char *number) | |
10848 | { | |
10849 | char *dot = strchr (number, '.'); | |
10850 | char *p1; | |
10851 | int bp_num; | |
10852 | int loc_num; | |
10853 | struct breakpoint *b; | |
10854 | struct bp_location *loc; | |
10855 | ||
10856 | *dot = '\0'; | |
10857 | ||
10858 | p1 = number; | |
197f0a60 | 10859 | bp_num = get_number (&p1); |
0d381245 VP |
10860 | if (bp_num == 0) |
10861 | error (_("Bad breakpoint number '%s'"), number); | |
10862 | ||
10863 | ALL_BREAKPOINTS (b) | |
10864 | if (b->number == bp_num) | |
10865 | { | |
10866 | break; | |
10867 | } | |
10868 | ||
10869 | if (!b || b->number != bp_num) | |
10870 | error (_("Bad breakpoint number '%s'"), number); | |
10871 | ||
10872 | p1 = dot+1; | |
197f0a60 | 10873 | loc_num = get_number (&p1); |
0d381245 VP |
10874 | if (loc_num == 0) |
10875 | error (_("Bad breakpoint location number '%s'"), number); | |
10876 | ||
10877 | --loc_num; | |
10878 | loc = b->loc; | |
10879 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
10880 | ; | |
10881 | if (!loc) | |
10882 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
10883 | ||
10884 | return loc; | |
10885 | } | |
10886 | ||
10887 | ||
1900040c MS |
10888 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10889 | If from_tty is nonzero, it prints a message to that effect, | |
10890 | which ends with a period (no newline). */ | |
10891 | ||
c906108c | 10892 | void |
fba45db2 | 10893 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10894 | { |
10895 | /* Never disable a watchpoint scope breakpoint; we want to | |
10896 | hit them when we leave scope so we can delete both the | |
10897 | watchpoint and its scope breakpoint at that time. */ | |
10898 | if (bpt->type == bp_watchpoint_scope) | |
10899 | return; | |
10900 | ||
c2c6d25f | 10901 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 10902 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
10903 | return; |
10904 | ||
b5de0fa7 | 10905 | bpt->enable_state = bp_disabled; |
c906108c | 10906 | |
b60e7edf | 10907 | update_global_location_list (0); |
c906108c | 10908 | |
383f836e | 10909 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10910 | } |
10911 | ||
95a42b64 TT |
10912 | /* A callback for map_breakpoint_numbers that calls |
10913 | disable_breakpoint. */ | |
10914 | ||
10915 | static void | |
10916 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
10917 | { | |
10918 | disable_breakpoint (b); | |
10919 | } | |
10920 | ||
c906108c | 10921 | static void |
fba45db2 | 10922 | disable_command (char *args, int from_tty) |
c906108c | 10923 | { |
52f0bd74 | 10924 | struct breakpoint *bpt; |
cc59ec59 | 10925 | |
c906108c SS |
10926 | if (args == 0) |
10927 | ALL_BREAKPOINTS (bpt) | |
10928 | switch (bpt->type) | |
c5aa993b JM |
10929 | { |
10930 | case bp_none: | |
8a3fe4f8 | 10931 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10932 | bpt->number); |
488919c4 | 10933 | break; |
c5aa993b | 10934 | case bp_breakpoint: |
1042e4c0 | 10935 | case bp_tracepoint: |
7a697b8d | 10936 | case bp_fast_tracepoint: |
0fb4aa4b | 10937 | case bp_static_tracepoint: |
ce78b96d | 10938 | case bp_catchpoint: |
c5aa993b JM |
10939 | case bp_hardware_breakpoint: |
10940 | case bp_watchpoint: | |
10941 | case bp_hardware_watchpoint: | |
10942 | case bp_read_watchpoint: | |
10943 | case bp_access_watchpoint: | |
10944 | disable_breakpoint (bpt); | |
488919c4 | 10945 | break; |
c5aa993b | 10946 | default: |
488919c4 | 10947 | break; |
c5aa993b | 10948 | } |
0d381245 VP |
10949 | else if (strchr (args, '.')) |
10950 | { | |
10951 | struct bp_location *loc = find_location_by_number (args); | |
10952 | if (loc) | |
10953 | loc->enabled = 0; | |
b60e7edf | 10954 | update_global_location_list (0); |
0d381245 | 10955 | } |
c906108c | 10956 | else |
95a42b64 | 10957 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10958 | } |
10959 | ||
10960 | static void | |
fba45db2 | 10961 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10962 | { |
afe38095 | 10963 | int target_resources_ok; |
c906108c SS |
10964 | |
10965 | if (bpt->type == bp_hardware_breakpoint) | |
10966 | { | |
10967 | int i; | |
c5aa993b | 10968 | i = hw_breakpoint_used_count (); |
53a5351d | 10969 | target_resources_ok = |
d92524f1 | 10970 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10971 | i + 1, 0); |
c906108c | 10972 | if (target_resources_ok == 0) |
8a3fe4f8 | 10973 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10974 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10975 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10976 | } |
10977 | ||
cc60f2e3 | 10978 | if (is_watchpoint (bpt)) |
c906108c | 10979 | { |
dde02812 ES |
10980 | struct gdb_exception e; |
10981 | ||
10982 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10983 | { |
dde02812 | 10984 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10985 | } |
dde02812 | 10986 | if (e.reason < 0) |
c5aa993b | 10987 | { |
dde02812 ES |
10988 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10989 | bpt->number); | |
10990 | return; | |
c5aa993b | 10991 | } |
c906108c | 10992 | } |
0101ce28 | 10993 | |
b4c291bb KH |
10994 | if (bpt->enable_state != bp_permanent) |
10995 | bpt->enable_state = bp_enabled; | |
10996 | bpt->disposition = disposition; | |
b60e7edf | 10997 | update_global_location_list (1); |
b4c291bb KH |
10998 | breakpoints_changed (); |
10999 | ||
383f836e | 11000 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
11001 | } |
11002 | ||
fe3f5fa8 | 11003 | |
c906108c | 11004 | void |
fba45db2 | 11005 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11006 | { |
11007 | do_enable_breakpoint (bpt, bpt->disposition); | |
11008 | } | |
11009 | ||
95a42b64 TT |
11010 | /* A callback for map_breakpoint_numbers that calls |
11011 | enable_breakpoint. */ | |
11012 | ||
11013 | static void | |
11014 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
11015 | { | |
11016 | enable_breakpoint (b); | |
11017 | } | |
11018 | ||
c906108c SS |
11019 | /* The enable command enables the specified breakpoints (or all defined |
11020 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 11021 | in stopping the inferior. */ |
c906108c | 11022 | |
c906108c | 11023 | static void |
fba45db2 | 11024 | enable_command (char *args, int from_tty) |
c906108c | 11025 | { |
52f0bd74 | 11026 | struct breakpoint *bpt; |
cc59ec59 | 11027 | |
c906108c SS |
11028 | if (args == 0) |
11029 | ALL_BREAKPOINTS (bpt) | |
11030 | switch (bpt->type) | |
c5aa993b JM |
11031 | { |
11032 | case bp_none: | |
8a3fe4f8 | 11033 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 11034 | bpt->number); |
488919c4 | 11035 | break; |
c5aa993b | 11036 | case bp_breakpoint: |
1042e4c0 | 11037 | case bp_tracepoint: |
7a697b8d | 11038 | case bp_fast_tracepoint: |
0fb4aa4b | 11039 | case bp_static_tracepoint: |
ce78b96d | 11040 | case bp_catchpoint: |
c5aa993b JM |
11041 | case bp_hardware_breakpoint: |
11042 | case bp_watchpoint: | |
11043 | case bp_hardware_watchpoint: | |
11044 | case bp_read_watchpoint: | |
11045 | case bp_access_watchpoint: | |
11046 | enable_breakpoint (bpt); | |
488919c4 | 11047 | break; |
c5aa993b | 11048 | default: |
488919c4 | 11049 | break; |
c5aa993b | 11050 | } |
0d381245 VP |
11051 | else if (strchr (args, '.')) |
11052 | { | |
11053 | struct bp_location *loc = find_location_by_number (args); | |
11054 | if (loc) | |
11055 | loc->enabled = 1; | |
b60e7edf | 11056 | update_global_location_list (1); |
0d381245 | 11057 | } |
c906108c | 11058 | else |
95a42b64 | 11059 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
11060 | } |
11061 | ||
11062 | static void | |
95a42b64 | 11063 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11064 | { |
b5de0fa7 | 11065 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
11066 | } |
11067 | ||
c906108c | 11068 | static void |
fba45db2 | 11069 | enable_once_command (char *args, int from_tty) |
c906108c | 11070 | { |
95a42b64 | 11071 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
11072 | } |
11073 | ||
11074 | static void | |
95a42b64 | 11075 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11076 | { |
b5de0fa7 | 11077 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
11078 | } |
11079 | ||
c906108c | 11080 | static void |
fba45db2 | 11081 | enable_delete_command (char *args, int from_tty) |
c906108c | 11082 | { |
95a42b64 | 11083 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
11084 | } |
11085 | \f | |
fa8d40ab JJ |
11086 | static void |
11087 | set_breakpoint_cmd (char *args, int from_tty) | |
11088 | { | |
11089 | } | |
11090 | ||
11091 | static void | |
11092 | show_breakpoint_cmd (char *args, int from_tty) | |
11093 | { | |
11094 | } | |
11095 | ||
1f3b5d1b PP |
11096 | /* Invalidate last known value of any hardware watchpoint if |
11097 | the memory which that value represents has been written to by | |
11098 | GDB itself. */ | |
11099 | ||
11100 | static void | |
11101 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
11102 | const bfd_byte *data) | |
11103 | { | |
11104 | struct breakpoint *bp; | |
11105 | ||
11106 | ALL_BREAKPOINTS (bp) | |
11107 | if (bp->enable_state == bp_enabled | |
11108 | && bp->type == bp_hardware_watchpoint | |
11109 | && bp->val_valid && bp->val) | |
11110 | { | |
11111 | struct bp_location *loc; | |
11112 | ||
11113 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
11114 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
11115 | && loc->address + loc->length > addr | |
11116 | && addr + len > loc->address) | |
11117 | { | |
11118 | value_free (bp->val); | |
11119 | bp->val = NULL; | |
11120 | bp->val_valid = 0; | |
11121 | } | |
11122 | } | |
11123 | } | |
11124 | ||
c906108c SS |
11125 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
11126 | ||
11127 | struct symtabs_and_lines | |
fba45db2 | 11128 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
11129 | { |
11130 | struct symtabs_and_lines sals; | |
cc59ec59 | 11131 | |
c906108c | 11132 | if (string == 0) |
8a3fe4f8 | 11133 | error (_("Empty line specification.")); |
c906108c SS |
11134 | if (default_breakpoint_valid) |
11135 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
11136 | default_breakpoint_symtab, |
11137 | default_breakpoint_line, | |
68219205 | 11138 | (char ***) NULL, NULL); |
c906108c SS |
11139 | else |
11140 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 11141 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 11142 | if (*string) |
8a3fe4f8 | 11143 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
11144 | return sals; |
11145 | } | |
8181d85f DJ |
11146 | |
11147 | /* Create and insert a raw software breakpoint at PC. Return an | |
11148 | identifier, which should be used to remove the breakpoint later. | |
11149 | In general, places which call this should be using something on the | |
11150 | breakpoint chain instead; this function should be eliminated | |
11151 | someday. */ | |
11152 | ||
11153 | void * | |
6c95b8df PA |
11154 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
11155 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
11156 | { |
11157 | struct bp_target_info *bp_tgt; | |
11158 | ||
6c95b8df | 11159 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 11160 | |
6c95b8df | 11161 | bp_tgt->placed_address_space = aspace; |
8181d85f | 11162 | bp_tgt->placed_address = pc; |
6c95b8df | 11163 | |
a6d9a66e | 11164 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
11165 | { |
11166 | /* Could not insert the breakpoint. */ | |
11167 | xfree (bp_tgt); | |
11168 | return NULL; | |
11169 | } | |
11170 | ||
11171 | return bp_tgt; | |
11172 | } | |
11173 | ||
4a64f543 MS |
11174 | /* Remove a breakpoint BP inserted by |
11175 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11176 | |
11177 | int | |
a6d9a66e | 11178 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11179 | { |
11180 | struct bp_target_info *bp_tgt = bp; | |
11181 | int ret; | |
11182 | ||
a6d9a66e | 11183 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11184 | xfree (bp_tgt); |
11185 | ||
11186 | return ret; | |
11187 | } | |
11188 | ||
4a64f543 MS |
11189 | /* One (or perhaps two) breakpoints used for software single |
11190 | stepping. */ | |
8181d85f DJ |
11191 | |
11192 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11193 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11194 | |
11195 | /* Create and insert a breakpoint for software single step. */ | |
11196 | ||
11197 | void | |
6c95b8df | 11198 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11199 | struct address_space *aspace, |
11200 | CORE_ADDR next_pc) | |
8181d85f DJ |
11201 | { |
11202 | void **bpt_p; | |
11203 | ||
11204 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11205 | { |
11206 | bpt_p = &single_step_breakpoints[0]; | |
11207 | single_step_gdbarch[0] = gdbarch; | |
11208 | } | |
8181d85f DJ |
11209 | else |
11210 | { | |
11211 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11212 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11213 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11214 | } |
11215 | ||
4a64f543 MS |
11216 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11217 | be to only create the breakpoints once, and actually put them on | |
11218 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11219 | We could adjust the addresses each time they were needed. Doing | |
11220 | this requires corresponding changes elsewhere where single step | |
11221 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11222 | |
6c95b8df | 11223 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11224 | if (*bpt_p == NULL) |
5af949e3 UW |
11225 | error (_("Could not insert single-step breakpoint at %s"), |
11226 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11227 | } |
11228 | ||
f02253f1 HZ |
11229 | /* Check if the breakpoints used for software single stepping |
11230 | were inserted or not. */ | |
11231 | ||
11232 | int | |
11233 | single_step_breakpoints_inserted (void) | |
11234 | { | |
11235 | return (single_step_breakpoints[0] != NULL | |
11236 | || single_step_breakpoints[1] != NULL); | |
11237 | } | |
11238 | ||
8181d85f DJ |
11239 | /* Remove and delete any breakpoints used for software single step. */ |
11240 | ||
11241 | void | |
11242 | remove_single_step_breakpoints (void) | |
11243 | { | |
11244 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11245 | ||
11246 | /* See insert_single_step_breakpoint for more about this deprecated | |
11247 | call. */ | |
a6d9a66e UW |
11248 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11249 | single_step_breakpoints[0]); | |
11250 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11251 | single_step_breakpoints[0] = NULL; |
11252 | ||
11253 | if (single_step_breakpoints[1] != NULL) | |
11254 | { | |
a6d9a66e UW |
11255 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11256 | single_step_breakpoints[1]); | |
11257 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11258 | single_step_breakpoints[1] = NULL; |
11259 | } | |
11260 | } | |
11261 | ||
d03285ec UW |
11262 | /* Delete software single step breakpoints without removing them from |
11263 | the inferior. This is intended to be used if the inferior's address | |
11264 | space where they were inserted is already gone, e.g. after exit or | |
11265 | exec. */ | |
11266 | ||
11267 | void | |
11268 | cancel_single_step_breakpoints (void) | |
11269 | { | |
11270 | int i; | |
11271 | ||
11272 | for (i = 0; i < 2; i++) | |
11273 | if (single_step_breakpoints[i]) | |
11274 | { | |
11275 | xfree (single_step_breakpoints[i]); | |
11276 | single_step_breakpoints[i] = NULL; | |
11277 | single_step_gdbarch[i] = NULL; | |
11278 | } | |
11279 | } | |
11280 | ||
11281 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11282 | removing them. */ | |
11283 | ||
11284 | static void | |
11285 | detach_single_step_breakpoints (void) | |
11286 | { | |
11287 | int i; | |
11288 | ||
11289 | for (i = 0; i < 2; i++) | |
11290 | if (single_step_breakpoints[i]) | |
11291 | target_remove_breakpoint (single_step_gdbarch[i], | |
11292 | single_step_breakpoints[i]); | |
11293 | } | |
11294 | ||
4a64f543 MS |
11295 | /* Check whether a software single-step breakpoint is inserted at |
11296 | PC. */ | |
1aafd4da UW |
11297 | |
11298 | static int | |
cc59ec59 MS |
11299 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11300 | CORE_ADDR pc) | |
1aafd4da UW |
11301 | { |
11302 | int i; | |
11303 | ||
11304 | for (i = 0; i < 2; i++) | |
11305 | { | |
11306 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11307 | if (bp_tgt |
11308 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11309 | bp_tgt->placed_address, | |
11310 | aspace, pc)) | |
1aafd4da UW |
11311 | return 1; |
11312 | } | |
11313 | ||
11314 | return 0; | |
11315 | } | |
11316 | ||
a96d9b2e SDJ |
11317 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11318 | non-zero otherwise. */ | |
11319 | static int | |
11320 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11321 | { | |
11322 | if (syscall_catchpoint_p (bp) | |
11323 | && bp->enable_state != bp_disabled | |
11324 | && bp->enable_state != bp_call_disabled) | |
11325 | return 1; | |
11326 | else | |
11327 | return 0; | |
11328 | } | |
11329 | ||
11330 | int | |
11331 | catch_syscall_enabled (void) | |
11332 | { | |
11333 | struct inferior *inf = current_inferior (); | |
11334 | ||
11335 | return inf->total_syscalls_count != 0; | |
11336 | } | |
11337 | ||
11338 | int | |
11339 | catching_syscall_number (int syscall_number) | |
11340 | { | |
11341 | struct breakpoint *bp; | |
11342 | ||
11343 | ALL_BREAKPOINTS (bp) | |
11344 | if (is_syscall_catchpoint_enabled (bp)) | |
11345 | { | |
11346 | if (bp->syscalls_to_be_caught) | |
11347 | { | |
11348 | int i, iter; | |
11349 | for (i = 0; | |
11350 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11351 | i++) | |
11352 | if (syscall_number == iter) | |
11353 | return 1; | |
11354 | } | |
11355 | else | |
11356 | return 1; | |
11357 | } | |
11358 | ||
11359 | return 0; | |
11360 | } | |
11361 | ||
11362 | /* Complete syscall names. Used by "catch syscall". */ | |
11363 | static char ** | |
11364 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11365 | char *text, char *word) | |
11366 | { | |
11367 | const char **list = get_syscall_names (); | |
c38eea1a MS |
11368 | char **retlist |
11369 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 11370 | |
c38eea1a MS |
11371 | xfree (list); |
11372 | return retlist; | |
a96d9b2e SDJ |
11373 | } |
11374 | ||
1042e4c0 SS |
11375 | /* Tracepoint-specific operations. */ |
11376 | ||
11377 | /* Set tracepoint count to NUM. */ | |
11378 | static void | |
11379 | set_tracepoint_count (int num) | |
11380 | { | |
11381 | tracepoint_count = num; | |
4fa62494 | 11382 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11383 | } |
11384 | ||
11385 | void | |
11386 | trace_command (char *arg, int from_tty) | |
11387 | { | |
8cdf0e15 VP |
11388 | if (create_breakpoint (get_current_arch (), |
11389 | arg, | |
11390 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11391 | 0 /* tempflag */, |
11392 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11393 | 0 /* Ignore count */, |
11394 | pending_break_support, | |
11395 | NULL, | |
11396 | from_tty, | |
84f4c1fe PM |
11397 | 1 /* enabled */, |
11398 | 0 /* internal */)) | |
fd9b8c24 | 11399 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11400 | } |
11401 | ||
7a697b8d SS |
11402 | void |
11403 | ftrace_command (char *arg, int from_tty) | |
11404 | { | |
8cdf0e15 VP |
11405 | if (create_breakpoint (get_current_arch (), |
11406 | arg, | |
11407 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11408 | 0 /* tempflag */, |
11409 | bp_fast_tracepoint /* type_wanted */, | |
11410 | 0 /* Ignore count */, | |
11411 | pending_break_support, | |
11412 | NULL, | |
11413 | from_tty, | |
84f4c1fe PM |
11414 | 1 /* enabled */, |
11415 | 0 /* internal */)) | |
0fb4aa4b PA |
11416 | set_tracepoint_count (breakpoint_count); |
11417 | } | |
11418 | ||
11419 | /* strace command implementation. Creates a static tracepoint. */ | |
11420 | ||
11421 | void | |
11422 | strace_command (char *arg, int from_tty) | |
11423 | { | |
11424 | if (create_breakpoint (get_current_arch (), | |
11425 | arg, | |
11426 | NULL, 0, 1 /* parse arg */, | |
11427 | 0 /* tempflag */, | |
11428 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11429 | 0 /* Ignore count */, |
11430 | pending_break_support, | |
11431 | NULL, | |
11432 | from_tty, | |
84f4c1fe PM |
11433 | 1 /* enabled */, |
11434 | 0 /* internal */)) | |
fd9b8c24 | 11435 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11436 | } |
11437 | ||
409873ef SS |
11438 | /* Set up a fake reader function that gets command lines from a linked |
11439 | list that was acquired during tracepoint uploading. */ | |
11440 | ||
11441 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11442 | static int next_cmd; |
409873ef SS |
11443 | |
11444 | static char * | |
11445 | read_uploaded_action (void) | |
11446 | { | |
11447 | char *rslt; | |
11448 | ||
3149d8c1 | 11449 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11450 | |
3149d8c1 | 11451 | next_cmd++; |
409873ef SS |
11452 | |
11453 | return rslt; | |
11454 | } | |
11455 | ||
00bf0b85 SS |
11456 | /* Given information about a tracepoint as recorded on a target (which |
11457 | can be either a live system or a trace file), attempt to create an | |
11458 | equivalent GDB tracepoint. This is not a reliable process, since | |
11459 | the target does not necessarily have all the information used when | |
11460 | the tracepoint was originally defined. */ | |
11461 | ||
11462 | struct breakpoint * | |
11463 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11464 | { |
409873ef | 11465 | char *addr_str, small_buf[100]; |
d5551862 | 11466 | struct breakpoint *tp; |
fd9b8c24 | 11467 | |
409873ef SS |
11468 | if (utp->at_string) |
11469 | addr_str = utp->at_string; | |
11470 | else | |
11471 | { | |
11472 | /* In the absence of a source location, fall back to raw | |
11473 | address. Since there is no way to confirm that the address | |
11474 | means the same thing as when the trace was started, warn the | |
11475 | user. */ | |
3e43a32a MS |
11476 | warning (_("Uploaded tracepoint %d has no " |
11477 | "source location, using raw address"), | |
409873ef SS |
11478 | utp->number); |
11479 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11480 | addr_str = small_buf; | |
11481 | } | |
11482 | ||
11483 | /* There's not much we can do with a sequence of bytecodes. */ | |
11484 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
11485 | warning (_("Uploaded tracepoint %d condition " |
11486 | "has no source form, ignoring it"), | |
409873ef | 11487 | utp->number); |
d5551862 | 11488 | |
8cdf0e15 | 11489 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11490 | addr_str, |
11491 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11492 | 0 /* tempflag */, |
0fb4aa4b | 11493 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11494 | 0 /* Ignore count */, |
11495 | pending_break_support, | |
11496 | NULL, | |
11497 | 0 /* from_tty */, | |
84f4c1fe PM |
11498 | utp->enabled /* enabled */, |
11499 | 0 /* internal */)) | |
fd9b8c24 PA |
11500 | return NULL; |
11501 | ||
00bf0b85 SS |
11502 | set_tracepoint_count (breakpoint_count); |
11503 | ||
409873ef | 11504 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11505 | tp = get_tracepoint (tracepoint_count); |
11506 | gdb_assert (tp != NULL); | |
d5551862 | 11507 | |
00bf0b85 SS |
11508 | if (utp->pass > 0) |
11509 | { | |
409873ef | 11510 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11511 | |
409873ef | 11512 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11513 | } |
11514 | ||
409873ef SS |
11515 | /* If we have uploaded versions of the original commands, set up a |
11516 | special-purpose "reader" function and call the usual command line | |
11517 | reader, then pass the result to the breakpoint command-setting | |
11518 | function. */ | |
3149d8c1 | 11519 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11520 | { |
409873ef | 11521 | struct command_line *cmd_list; |
00bf0b85 | 11522 | |
409873ef | 11523 | this_utp = utp; |
3149d8c1 | 11524 | next_cmd = 0; |
d5551862 | 11525 | |
409873ef SS |
11526 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
11527 | ||
11528 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 11529 | } |
3149d8c1 SS |
11530 | else if (!VEC_empty (char_ptr, utp->actions) |
11531 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
11532 | warning (_("Uploaded tracepoint %d actions " |
11533 | "have no source form, ignoring them"), | |
409873ef | 11534 | utp->number); |
00bf0b85 SS |
11535 | |
11536 | return tp; | |
11537 | } | |
11538 | ||
1042e4c0 SS |
11539 | /* Print information on tracepoint number TPNUM_EXP, or all if |
11540 | omitted. */ | |
11541 | ||
11542 | static void | |
e5a67952 | 11543 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 11544 | { |
e5a67952 | 11545 | int num_printed; |
1042e4c0 | 11546 | |
e5a67952 | 11547 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
11548 | |
11549 | if (num_printed == 0) | |
1042e4c0 | 11550 | { |
e5a67952 | 11551 | if (args == NULL || *args == '\0') |
d77f58be SS |
11552 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
11553 | else | |
e5a67952 | 11554 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 11555 | } |
ad443146 SS |
11556 | |
11557 | default_collect_info (); | |
1042e4c0 SS |
11558 | } |
11559 | ||
4a64f543 | 11560 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
11561 | Not supported by all targets. */ |
11562 | static void | |
11563 | enable_trace_command (char *args, int from_tty) | |
11564 | { | |
11565 | enable_command (args, from_tty); | |
11566 | } | |
11567 | ||
4a64f543 | 11568 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
11569 | Not supported by all targets. */ |
11570 | static void | |
11571 | disable_trace_command (char *args, int from_tty) | |
11572 | { | |
11573 | disable_command (args, from_tty); | |
11574 | } | |
11575 | ||
4a64f543 | 11576 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
11577 | static void |
11578 | delete_trace_command (char *arg, int from_tty) | |
11579 | { | |
35df4500 | 11580 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
11581 | |
11582 | dont_repeat (); | |
11583 | ||
11584 | if (arg == 0) | |
11585 | { | |
11586 | int breaks_to_delete = 0; | |
11587 | ||
11588 | /* Delete all breakpoints if no argument. | |
11589 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
11590 | have to be deleted with an explicit breakpoint number |
11591 | argument. */ | |
1042e4c0 SS |
11592 | ALL_TRACEPOINTS (b) |
11593 | { | |
11594 | if (b->number >= 0) | |
11595 | { | |
11596 | breaks_to_delete = 1; | |
11597 | break; | |
11598 | } | |
11599 | } | |
11600 | ||
11601 | /* Ask user only if there are some breakpoints to delete. */ | |
11602 | if (!from_tty | |
11603 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
11604 | { | |
35df4500 | 11605 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
1042e4c0 | 11606 | { |
d77f58be | 11607 | if (is_tracepoint (b) |
059fb39f | 11608 | && b->number >= 0) |
1042e4c0 SS |
11609 | delete_breakpoint (b); |
11610 | } | |
11611 | } | |
11612 | } | |
11613 | else | |
95a42b64 | 11614 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
11615 | } |
11616 | ||
197f0a60 TT |
11617 | /* Helper function for trace_pass_command. */ |
11618 | ||
11619 | static void | |
11620 | trace_pass_set_count (struct breakpoint *bp, int count, int from_tty) | |
11621 | { | |
11622 | bp->pass_count = count; | |
11623 | observer_notify_tracepoint_modified (bp->number); | |
11624 | if (from_tty) | |
11625 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
11626 | bp->number, count); | |
11627 | } | |
11628 | ||
1042e4c0 SS |
11629 | /* Set passcount for tracepoint. |
11630 | ||
11631 | First command argument is passcount, second is tracepoint number. | |
11632 | If tracepoint number omitted, apply to most recently defined. | |
11633 | Also accepts special argument "all". */ | |
11634 | ||
11635 | static void | |
11636 | trace_pass_command (char *args, int from_tty) | |
11637 | { | |
197f0a60 | 11638 | struct breakpoint *t1; |
1042e4c0 | 11639 | unsigned int count; |
1042e4c0 SS |
11640 | |
11641 | if (args == 0 || *args == 0) | |
3e43a32a MS |
11642 | error (_("passcount command requires an " |
11643 | "argument (count + optional TP num)")); | |
1042e4c0 | 11644 | |
4a64f543 | 11645 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
11646 | |
11647 | while (*args && isspace ((int) *args)) | |
11648 | args++; | |
11649 | ||
11650 | if (*args && strncasecmp (args, "all", 3) == 0) | |
11651 | { | |
11652 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
11653 | if (*args) |
11654 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 11655 | |
197f0a60 TT |
11656 | ALL_TRACEPOINTS (t1) |
11657 | { | |
11658 | trace_pass_set_count (t1, count, from_tty); | |
11659 | } | |
11660 | } | |
11661 | else if (*args == '\0') | |
1042e4c0 | 11662 | { |
197f0a60 | 11663 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 11664 | if (t1) |
197f0a60 TT |
11665 | trace_pass_set_count (t1, count, from_tty); |
11666 | } | |
11667 | else | |
11668 | { | |
11669 | struct get_number_or_range_state state; | |
11670 | ||
11671 | init_number_or_range (&state, args); | |
11672 | while (!state.finished) | |
1042e4c0 | 11673 | { |
197f0a60 TT |
11674 | t1 = get_tracepoint_by_number (&args, &state, 1); |
11675 | if (t1) | |
11676 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
11677 | } |
11678 | } | |
1042e4c0 SS |
11679 | } |
11680 | ||
11681 | struct breakpoint * | |
11682 | get_tracepoint (int num) | |
11683 | { | |
11684 | struct breakpoint *t; | |
11685 | ||
11686 | ALL_TRACEPOINTS (t) | |
11687 | if (t->number == num) | |
11688 | return t; | |
11689 | ||
11690 | return NULL; | |
11691 | } | |
11692 | ||
d5551862 SS |
11693 | /* Find the tracepoint with the given target-side number (which may be |
11694 | different from the tracepoint number after disconnecting and | |
11695 | reconnecting). */ | |
11696 | ||
11697 | struct breakpoint * | |
11698 | get_tracepoint_by_number_on_target (int num) | |
11699 | { | |
11700 | struct breakpoint *t; | |
11701 | ||
11702 | ALL_TRACEPOINTS (t) | |
11703 | if (t->number_on_target == num) | |
11704 | return t; | |
11705 | ||
11706 | return NULL; | |
11707 | } | |
11708 | ||
1042e4c0 | 11709 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
11710 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
11711 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 SS |
11712 | recent tracepoint (tracepoint_count) is returned. */ |
11713 | struct breakpoint * | |
197f0a60 TT |
11714 | get_tracepoint_by_number (char **arg, |
11715 | struct get_number_or_range_state *state, | |
11716 | int optional_p) | |
1042e4c0 SS |
11717 | { |
11718 | extern int tracepoint_count; | |
11719 | struct breakpoint *t; | |
11720 | int tpnum; | |
11721 | char *instring = arg == NULL ? NULL : *arg; | |
11722 | ||
197f0a60 TT |
11723 | if (state) |
11724 | { | |
11725 | gdb_assert (!state->finished); | |
11726 | tpnum = get_number_or_range (state); | |
11727 | } | |
11728 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
11729 | { |
11730 | if (optional_p) | |
11731 | tpnum = tracepoint_count; | |
11732 | else | |
11733 | error_no_arg (_("tracepoint number")); | |
11734 | } | |
11735 | else | |
197f0a60 | 11736 | tpnum = get_number (arg); |
1042e4c0 SS |
11737 | |
11738 | if (tpnum <= 0) | |
11739 | { | |
11740 | if (instring && *instring) | |
11741 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
11742 | instring); | |
11743 | else | |
3e43a32a MS |
11744 | printf_filtered (_("Tracepoint argument missing " |
11745 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
11746 | return NULL; |
11747 | } | |
11748 | ||
11749 | ALL_TRACEPOINTS (t) | |
11750 | if (t->number == tpnum) | |
11751 | { | |
11752 | return t; | |
11753 | } | |
11754 | ||
1042e4c0 SS |
11755 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
11756 | return NULL; | |
11757 | } | |
11758 | ||
6149aea9 PA |
11759 | /* Save information on user settable breakpoints (watchpoints, etc) to |
11760 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
11761 | on each breakpoint and only include the ones for which it returns | |
11762 | non-zero. */ | |
11763 | ||
1042e4c0 | 11764 | static void |
6149aea9 PA |
11765 | save_breakpoints (char *filename, int from_tty, |
11766 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
11767 | { |
11768 | struct breakpoint *tp; | |
6149aea9 | 11769 | int any = 0; |
a7bdde9e | 11770 | char *pathname; |
1042e4c0 | 11771 | struct cleanup *cleanup; |
a7bdde9e | 11772 | struct ui_file *fp; |
6149aea9 | 11773 | int extra_trace_bits = 0; |
1042e4c0 | 11774 | |
6149aea9 PA |
11775 | if (filename == 0 || *filename == 0) |
11776 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
11777 | |
11778 | /* See if we have anything to save. */ | |
6149aea9 | 11779 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11780 | { |
6149aea9 | 11781 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 11782 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
11783 | continue; |
11784 | ||
11785 | /* If we have a filter, only save the breakpoints it accepts. */ | |
11786 | if (filter && !filter (tp)) | |
11787 | continue; | |
11788 | ||
11789 | any = 1; | |
11790 | ||
11791 | if (is_tracepoint (tp)) | |
11792 | { | |
11793 | extra_trace_bits = 1; | |
11794 | ||
11795 | /* We can stop searching. */ | |
11796 | break; | |
11797 | } | |
1042e4c0 | 11798 | } |
6149aea9 PA |
11799 | |
11800 | if (!any) | |
1042e4c0 | 11801 | { |
6149aea9 | 11802 | warning (_("Nothing to save.")); |
1042e4c0 SS |
11803 | return; |
11804 | } | |
11805 | ||
6149aea9 | 11806 | pathname = tilde_expand (filename); |
1042e4c0 | 11807 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11808 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11809 | if (!fp) |
6149aea9 PA |
11810 | error (_("Unable to open file '%s' for saving (%s)"), |
11811 | filename, safe_strerror (errno)); | |
a7bdde9e | 11812 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11813 | |
6149aea9 PA |
11814 | if (extra_trace_bits) |
11815 | save_trace_state_variables (fp); | |
8bf6485c | 11816 | |
6149aea9 | 11817 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11818 | { |
6149aea9 | 11819 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 11820 | if (!user_breakpoint_p (tp)) |
6149aea9 | 11821 | continue; |
8bf6485c | 11822 | |
6149aea9 PA |
11823 | /* If we have a filter, only save the breakpoints it accepts. */ |
11824 | if (filter && !filter (tp)) | |
11825 | continue; | |
11826 | ||
11827 | if (tp->ops != NULL) | |
11828 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11829 | else |
11830 | { | |
6149aea9 PA |
11831 | if (tp->type == bp_fast_tracepoint) |
11832 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
11833 | if (tp->type == bp_static_tracepoint) |
11834 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
11835 | else if (tp->type == bp_tracepoint) |
11836 | fprintf_unfiltered (fp, "trace"); | |
11837 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11838 | fprintf_unfiltered (fp, "tbreak"); | |
11839 | else if (tp->type == bp_breakpoint) | |
11840 | fprintf_unfiltered (fp, "break"); | |
11841 | else if (tp->type == bp_hardware_breakpoint | |
11842 | && tp->disposition == disp_del) | |
11843 | fprintf_unfiltered (fp, "thbreak"); | |
11844 | else if (tp->type == bp_hardware_breakpoint) | |
11845 | fprintf_unfiltered (fp, "hbreak"); | |
11846 | else if (tp->type == bp_watchpoint) | |
11847 | fprintf_unfiltered (fp, "watch"); | |
11848 | else if (tp->type == bp_hardware_watchpoint) | |
11849 | fprintf_unfiltered (fp, "watch"); | |
11850 | else if (tp->type == bp_read_watchpoint) | |
11851 | fprintf_unfiltered (fp, "rwatch"); | |
11852 | else if (tp->type == bp_access_watchpoint) | |
11853 | fprintf_unfiltered (fp, "awatch"); | |
11854 | else | |
11855 | internal_error (__FILE__, __LINE__, | |
11856 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11857 | ||
11858 | if (tp->exp_string) | |
11859 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
11860 | else if (tp->addr_string) | |
11861 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
11862 | else | |
11863 | { | |
11864 | char tmp[40]; | |
11865 | ||
11866 | sprintf_vma (tmp, tp->loc->address); | |
11867 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
11868 | } | |
1042e4c0 SS |
11869 | } |
11870 | ||
6149aea9 PA |
11871 | if (tp->thread != -1) |
11872 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
11873 | ||
11874 | if (tp->task != 0) | |
11875 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
11876 | |
11877 | fprintf_unfiltered (fp, "\n"); | |
11878 | ||
6149aea9 PA |
11879 | /* Note, we can't rely on tp->number for anything, as we can't |
11880 | assume the recreated breakpoint numbers will match. Use $bpnum | |
11881 | instead. */ | |
11882 | ||
11883 | if (tp->cond_string) | |
11884 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
11885 | ||
11886 | if (tp->ignore_count) | |
11887 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
11888 | ||
1042e4c0 | 11889 | if (tp->pass_count) |
a7bdde9e | 11890 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 11891 | |
a7bdde9e | 11892 | if (tp->commands) |
1042e4c0 | 11893 | { |
a7bdde9e VP |
11894 | volatile struct gdb_exception ex; |
11895 | ||
6149aea9 | 11896 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
11897 | |
11898 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 11899 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 11900 | { |
9add0f1b | 11901 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
11902 | } |
11903 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 11904 | |
a7bdde9e VP |
11905 | if (ex.reason < 0) |
11906 | throw_exception (ex); | |
1042e4c0 | 11907 | |
a7bdde9e | 11908 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 11909 | } |
6149aea9 PA |
11910 | |
11911 | if (tp->enable_state == bp_disabled) | |
11912 | fprintf_unfiltered (fp, "disable\n"); | |
11913 | ||
11914 | /* If this is a multi-location breakpoint, check if the locations | |
11915 | should be individually disabled. Watchpoint locations are | |
11916 | special, and not user visible. */ | |
11917 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
11918 | { | |
11919 | struct bp_location *loc; | |
11920 | int n = 1; | |
11921 | ||
11922 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
11923 | if (!loc->enabled) | |
11924 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
11925 | } | |
1042e4c0 | 11926 | } |
8bf6485c | 11927 | |
6149aea9 | 11928 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
11929 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
11930 | ||
1042e4c0 SS |
11931 | do_cleanups (cleanup); |
11932 | if (from_tty) | |
6149aea9 PA |
11933 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
11934 | } | |
11935 | ||
11936 | /* The `save breakpoints' command. */ | |
11937 | ||
11938 | static void | |
11939 | save_breakpoints_command (char *args, int from_tty) | |
11940 | { | |
11941 | save_breakpoints (args, from_tty, NULL); | |
11942 | } | |
11943 | ||
11944 | /* The `save tracepoints' command. */ | |
11945 | ||
11946 | static void | |
11947 | save_tracepoints_command (char *args, int from_tty) | |
11948 | { | |
11949 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
11950 | } |
11951 | ||
11952 | /* Create a vector of all tracepoints. */ | |
11953 | ||
11954 | VEC(breakpoint_p) * | |
eeae04df | 11955 | all_tracepoints (void) |
1042e4c0 SS |
11956 | { |
11957 | VEC(breakpoint_p) *tp_vec = 0; | |
11958 | struct breakpoint *tp; | |
11959 | ||
11960 | ALL_TRACEPOINTS (tp) | |
11961 | { | |
11962 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
11963 | } | |
11964 | ||
11965 | return tp_vec; | |
11966 | } | |
11967 | ||
c906108c | 11968 | \f |
4a64f543 MS |
11969 | /* This help string is used for the break, hbreak, tbreak and thbreak |
11970 | commands. It is defined as a macro to prevent duplication. | |
11971 | COMMAND should be a string constant containing the name of the | |
11972 | command. */ | |
31e2b00f AS |
11973 | #define BREAK_ARGS_HELP(command) \ |
11974 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
11975 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
11976 | If a line number is specified, break at start of code for that line.\n\ | |
11977 | If a function is specified, break at start of code for that function.\n\ | |
11978 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
11979 | With no LOCATION, uses current execution address of the selected\n\ |
11980 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
11981 | \n\ |
11982 | THREADNUM is the number from \"info threads\".\n\ | |
11983 | CONDITION is a boolean expression.\n\ | |
11984 | \n\ | |
d41c0fc8 PA |
11985 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
11986 | conditions are different.\n\ | |
31e2b00f AS |
11987 | \n\ |
11988 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
11989 | ||
44feb3ce TT |
11990 | /* List of subcommands for "catch". */ |
11991 | static struct cmd_list_element *catch_cmdlist; | |
11992 | ||
11993 | /* List of subcommands for "tcatch". */ | |
11994 | static struct cmd_list_element *tcatch_cmdlist; | |
11995 | ||
11996 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
11997 | lists, and pass some additional user data to the command function. */ | |
11998 | static void | |
11999 | add_catch_command (char *name, char *docstring, | |
12000 | void (*sfunc) (char *args, int from_tty, | |
12001 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
12002 | char **(*completer) (struct cmd_list_element *cmd, |
12003 | char *text, char *word), | |
44feb3ce TT |
12004 | void *user_data_catch, |
12005 | void *user_data_tcatch) | |
12006 | { | |
12007 | struct cmd_list_element *command; | |
12008 | ||
12009 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12010 | &catch_cmdlist); | |
12011 | set_cmd_sfunc (command, sfunc); | |
12012 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 12013 | set_cmd_completer (command, completer); |
44feb3ce TT |
12014 | |
12015 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12016 | &tcatch_cmdlist); | |
12017 | set_cmd_sfunc (command, sfunc); | |
12018 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 12019 | set_cmd_completer (command, completer); |
44feb3ce TT |
12020 | } |
12021 | ||
6c95b8df | 12022 | static void |
a79b8f6e | 12023 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 12024 | { |
6c95b8df PA |
12025 | inf->total_syscalls_count = 0; |
12026 | inf->any_syscall_count = 0; | |
12027 | VEC_free (int, inf->syscalls_counts); | |
12028 | } | |
12029 | ||
6149aea9 PA |
12030 | static void |
12031 | save_command (char *arg, int from_tty) | |
12032 | { | |
3e43a32a MS |
12033 | printf_unfiltered (_("\"save\" must be followed by " |
12034 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
12035 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
12036 | } | |
12037 | ||
84f4c1fe PM |
12038 | struct breakpoint * |
12039 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
12040 | void *data) | |
12041 | { | |
35df4500 | 12042 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 12043 | |
35df4500 | 12044 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
12045 | { |
12046 | if ((*callback) (b, data)) | |
12047 | return b; | |
12048 | } | |
12049 | ||
12050 | return NULL; | |
12051 | } | |
12052 | ||
c906108c | 12053 | void |
fba45db2 | 12054 | _initialize_breakpoint (void) |
c906108c SS |
12055 | { |
12056 | struct cmd_list_element *c; | |
12057 | ||
84acb35a | 12058 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 12059 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 12060 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 12061 | |
17450429 PP |
12062 | breakpoint_objfile_key = register_objfile_data (); |
12063 | ||
c906108c SS |
12064 | breakpoint_chain = 0; |
12065 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
12066 | before a breakpoint is set. */ | |
12067 | breakpoint_count = 0; | |
12068 | ||
1042e4c0 SS |
12069 | tracepoint_count = 0; |
12070 | ||
1bedd215 AC |
12071 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
12072 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
12073 | Usage is `ignore N COUNT'.")); | |
c906108c | 12074 | if (xdb_commands) |
c5aa993b | 12075 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 12076 | |
1bedd215 AC |
12077 | add_com ("commands", class_breakpoint, commands_command, _("\ |
12078 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
12079 | Give breakpoint number as argument after \"commands\".\n\ |
12080 | With no argument, the targeted breakpoint is the last one set.\n\ | |
12081 | The commands themselves follow starting on the next line.\n\ | |
12082 | Type a line containing \"end\" to indicate the end of them.\n\ | |
12083 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 12084 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 12085 | |
1bedd215 AC |
12086 | add_com ("condition", class_breakpoint, condition_command, _("\ |
12087 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 12088 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 12089 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 12090 | |
1bedd215 | 12091 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 12092 | Set a temporary breakpoint.\n\ |
c906108c SS |
12093 | Like \"break\" except the breakpoint is only temporary,\n\ |
12094 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
12095 | by using \"enable delete\" on the breakpoint number.\n\ |
12096 | \n" | |
12097 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 12098 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12099 | |
1bedd215 | 12100 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 12101 | Set a hardware assisted breakpoint.\n\ |
c906108c | 12102 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
12103 | some target hardware may not have this support.\n\ |
12104 | \n" | |
12105 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 12106 | set_cmd_completer (c, location_completer); |
c906108c | 12107 | |
1bedd215 | 12108 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 12109 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 12110 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
12111 | so it will be deleted when hit.\n\ |
12112 | \n" | |
12113 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 12114 | set_cmd_completer (c, location_completer); |
c906108c | 12115 | |
1bedd215 AC |
12116 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
12117 | Enable some breakpoints.\n\ | |
c906108c SS |
12118 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12119 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12120 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12121 | With a subcommand you can enable temporarily."), |
c906108c SS |
12122 | &enablelist, "enable ", 1, &cmdlist); |
12123 | if (xdb_commands) | |
1bedd215 AC |
12124 | add_com ("ab", class_breakpoint, enable_command, _("\ |
12125 | Enable some breakpoints.\n\ | |
c906108c SS |
12126 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12127 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12128 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12129 | With a subcommand you can enable temporarily.")); |
c906108c SS |
12130 | |
12131 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
12132 | ||
84951ab5 | 12133 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 12134 | Enable some breakpoints.\n\ |
c906108c SS |
12135 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12136 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12137 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 12138 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 12139 | |
1a966eab AC |
12140 | add_cmd ("once", no_class, enable_once_command, _("\ |
12141 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12142 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12143 | &enablebreaklist); |
12144 | ||
1a966eab AC |
12145 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12146 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12147 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12148 | &enablebreaklist); |
12149 | ||
1a966eab AC |
12150 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12151 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12152 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12153 | &enablelist); |
12154 | ||
1a966eab AC |
12155 | add_cmd ("once", no_class, enable_once_command, _("\ |
12156 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12157 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12158 | &enablelist); |
12159 | ||
1bedd215 AC |
12160 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
12161 | Disable some breakpoints.\n\ | |
c906108c SS |
12162 | Arguments are breakpoint numbers with spaces in between.\n\ |
12163 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12164 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
12165 | &disablelist, "disable ", 1, &cmdlist); |
12166 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
12167 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
12168 | if (xdb_commands) | |
1bedd215 AC |
12169 | add_com ("sb", class_breakpoint, disable_command, _("\ |
12170 | Disable some breakpoints.\n\ | |
c906108c SS |
12171 | Arguments are breakpoint numbers with spaces in between.\n\ |
12172 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12173 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 12174 | |
1a966eab AC |
12175 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
12176 | Disable some breakpoints.\n\ | |
c906108c SS |
12177 | Arguments are breakpoint numbers with spaces in between.\n\ |
12178 | To disable all breakpoints, give no argument.\n\ | |
12179 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 12180 | This command may be abbreviated \"disable\"."), |
c906108c SS |
12181 | &disablelist); |
12182 | ||
1bedd215 AC |
12183 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
12184 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12185 | Arguments are breakpoint numbers with spaces in between.\n\ |
12186 | To delete all breakpoints, give no argument.\n\ | |
12187 | \n\ | |
12188 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 12189 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
12190 | &deletelist, "delete ", 1, &cmdlist); |
12191 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 12192 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 12193 | if (xdb_commands) |
1bedd215 AC |
12194 | add_com ("db", class_breakpoint, delete_command, _("\ |
12195 | Delete some breakpoints.\n\ | |
c906108c | 12196 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 12197 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12198 | |
1a966eab AC |
12199 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12200 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12201 | Arguments are breakpoint numbers with spaces in between.\n\ |
12202 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12203 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12204 | &deletelist); |
12205 | ||
1bedd215 AC |
12206 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12207 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12208 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12209 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12210 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12211 | If an address is specified, breakpoints at that address are cleared.\n\ |
12212 | \n\ | |
12213 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12214 | is executing in.\n\ |
12215 | \n\ | |
1bedd215 | 12216 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12217 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12218 | |
1bedd215 | 12219 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12220 | Set breakpoint at specified line or function.\n" |
12221 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12222 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12223 | |
c906108c SS |
12224 | add_com_alias ("b", "break", class_run, 1); |
12225 | add_com_alias ("br", "break", class_run, 1); | |
12226 | add_com_alias ("bre", "break", class_run, 1); | |
12227 | add_com_alias ("brea", "break", class_run, 1); | |
12228 | ||
7681d515 PM |
12229 | if (xdb_commands) |
12230 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12231 | |
12232 | if (dbx_commands) | |
12233 | { | |
1bedd215 AC |
12234 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12235 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12236 | &stoplist, "stop ", 1, &cmdlist); |
12237 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12238 | _("Break in function or address."), &stoplist); |
c5aa993b | 12239 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12240 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12241 | add_com ("status", class_info, breakpoints_info, _("\ |
12242 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12243 | The \"Type\" column indicates one of:\n\ |
12244 | \tbreakpoint - normal breakpoint\n\ | |
12245 | \twatchpoint - watchpoint\n\ | |
12246 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12247 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12248 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12249 | address and file/line number respectively.\n\ |
12250 | \n\ | |
12251 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12252 | are set to the address of the last breakpoint listed unless the command\n\ |
12253 | is prefixed with \"server \".\n\n\ | |
c906108c | 12254 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12255 | breakpoint set.")); |
c906108c SS |
12256 | } |
12257 | ||
1bedd215 | 12258 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 12259 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
12260 | The \"Type\" column indicates one of:\n\ |
12261 | \tbreakpoint - normal breakpoint\n\ | |
12262 | \twatchpoint - watchpoint\n\ | |
12263 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12264 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12265 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12266 | address and file/line number respectively.\n\ |
12267 | \n\ | |
12268 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12269 | are set to the address of the last breakpoint listed unless the command\n\ |
12270 | is prefixed with \"server \".\n\n\ | |
c906108c | 12271 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12272 | breakpoint set.")); |
c906108c | 12273 | |
6b04bdb7 MS |
12274 | add_info_alias ("b", "breakpoints", 1); |
12275 | ||
c906108c | 12276 | if (xdb_commands) |
1bedd215 AC |
12277 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12278 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12279 | The \"Type\" column indicates one of:\n\ |
12280 | \tbreakpoint - normal breakpoint\n\ | |
12281 | \twatchpoint - watchpoint\n\ | |
12282 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12283 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12284 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12285 | address and file/line number respectively.\n\ |
12286 | \n\ | |
12287 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12288 | are set to the address of the last breakpoint listed unless the command\n\ |
12289 | is prefixed with \"server \".\n\n\ | |
c906108c | 12290 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12291 | breakpoint set.")); |
c906108c | 12292 | |
1a966eab AC |
12293 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12294 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12295 | The \"Type\" column indicates one of:\n\ |
12296 | \tbreakpoint - normal breakpoint\n\ | |
12297 | \twatchpoint - watchpoint\n\ | |
12298 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12299 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12300 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12301 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12302 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12303 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12304 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12305 | address and file/line number respectively.\n\ |
12306 | \n\ | |
12307 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12308 | are set to the address of the last breakpoint listed unless the command\n\ |
12309 | is prefixed with \"server \".\n\n\ | |
c906108c | 12310 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12311 | breakpoint set."), |
c906108c SS |
12312 | &maintenanceinfolist); |
12313 | ||
44feb3ce TT |
12314 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12315 | Set catchpoints to catch events."), | |
12316 | &catch_cmdlist, "catch ", | |
12317 | 0/*allow-unknown*/, &cmdlist); | |
12318 | ||
12319 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12320 | Set temporary catchpoints to catch events."), | |
12321 | &tcatch_cmdlist, "tcatch ", | |
12322 | 0/*allow-unknown*/, &cmdlist); | |
12323 | ||
12324 | /* Add catch and tcatch sub-commands. */ | |
12325 | add_catch_command ("catch", _("\ | |
12326 | Catch an exception, when caught.\n\ | |
12327 | With an argument, catch only exceptions with the given name."), | |
12328 | catch_catch_command, | |
a96d9b2e | 12329 | NULL, |
44feb3ce TT |
12330 | CATCH_PERMANENT, |
12331 | CATCH_TEMPORARY); | |
12332 | add_catch_command ("throw", _("\ | |
12333 | Catch an exception, when thrown.\n\ | |
12334 | With an argument, catch only exceptions with the given name."), | |
12335 | catch_throw_command, | |
a96d9b2e | 12336 | NULL, |
44feb3ce TT |
12337 | CATCH_PERMANENT, |
12338 | CATCH_TEMPORARY); | |
12339 | add_catch_command ("fork", _("Catch calls to fork."), | |
12340 | catch_fork_command_1, | |
a96d9b2e | 12341 | NULL, |
44feb3ce TT |
12342 | (void *) (uintptr_t) catch_fork_permanent, |
12343 | (void *) (uintptr_t) catch_fork_temporary); | |
12344 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12345 | catch_fork_command_1, | |
a96d9b2e | 12346 | NULL, |
44feb3ce TT |
12347 | (void *) (uintptr_t) catch_vfork_permanent, |
12348 | (void *) (uintptr_t) catch_vfork_temporary); | |
12349 | add_catch_command ("exec", _("Catch calls to exec."), | |
12350 | catch_exec_command_1, | |
a96d9b2e SDJ |
12351 | NULL, |
12352 | CATCH_PERMANENT, | |
12353 | CATCH_TEMPORARY); | |
12354 | add_catch_command ("syscall", _("\ | |
12355 | Catch system calls by their names and/or numbers.\n\ | |
12356 | Arguments say which system calls to catch. If no arguments\n\ | |
12357 | are given, every system call will be caught.\n\ | |
12358 | Arguments, if given, should be one or more system call names\n\ | |
12359 | (if your system supports that), or system call numbers."), | |
12360 | catch_syscall_command_1, | |
12361 | catch_syscall_completer, | |
44feb3ce TT |
12362 | CATCH_PERMANENT, |
12363 | CATCH_TEMPORARY); | |
44feb3ce TT |
12364 | add_catch_command ("exception", _("\ |
12365 | Catch Ada exceptions, when raised.\n\ | |
12366 | With an argument, catch only exceptions with the given name."), | |
12367 | catch_ada_exception_command, | |
a96d9b2e | 12368 | NULL, |
44feb3ce TT |
12369 | CATCH_PERMANENT, |
12370 | CATCH_TEMPORARY); | |
12371 | add_catch_command ("assert", _("\ | |
12372 | Catch failed Ada assertions, when raised.\n\ | |
12373 | With an argument, catch only exceptions with the given name."), | |
12374 | catch_assert_command, | |
a96d9b2e | 12375 | NULL, |
44feb3ce TT |
12376 | CATCH_PERMANENT, |
12377 | CATCH_TEMPORARY); | |
c5aa993b | 12378 | |
1bedd215 AC |
12379 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12380 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12381 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12382 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12383 | an expression changes.\n\ |
12384 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12385 | the memory to which it refers.")); | |
65d12d83 | 12386 | set_cmd_completer (c, expression_completer); |
c906108c | 12387 | |
1bedd215 AC |
12388 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12389 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12390 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12391 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12392 | an expression is read.\n\ |
12393 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12394 | the memory to which it refers.")); | |
65d12d83 | 12395 | set_cmd_completer (c, expression_completer); |
c906108c | 12396 | |
1bedd215 AC |
12397 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12398 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12399 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12400 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12401 | an expression is either read or written.\n\ |
12402 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12403 | the memory to which it refers.")); | |
65d12d83 | 12404 | set_cmd_completer (c, expression_completer); |
c906108c | 12405 | |
d77f58be | 12406 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 12407 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 12408 | |
920d2a44 AC |
12409 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12410 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12411 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12412 | &can_use_hw_watchpoints, _("\ | |
12413 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12414 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12415 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12416 | such is available. (However, any hardware watchpoints that were\n\ | |
12417 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12418 | hardware.)"), |
12419 | NULL, | |
920d2a44 | 12420 | show_can_use_hw_watchpoints, |
85c07804 | 12421 | &setlist, &showlist); |
c906108c SS |
12422 | |
12423 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12424 | |
1042e4c0 SS |
12425 | /* Tracepoint manipulation commands. */ |
12426 | ||
12427 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12428 | Set a tracepoint at specified line or function.\n\ | |
12429 | \n" | |
12430 | BREAK_ARGS_HELP ("trace") "\n\ | |
12431 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12432 | set_cmd_completer (c, location_completer); | |
12433 | ||
12434 | add_com_alias ("tp", "trace", class_alias, 0); | |
12435 | add_com_alias ("tr", "trace", class_alias, 1); | |
12436 | add_com_alias ("tra", "trace", class_alias, 1); | |
12437 | add_com_alias ("trac", "trace", class_alias, 1); | |
12438 | ||
7a697b8d SS |
12439 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12440 | Set a fast tracepoint at specified line or function.\n\ | |
12441 | \n" | |
12442 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12443 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12444 | set_cmd_completer (c, location_completer); | |
12445 | ||
0fb4aa4b PA |
12446 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12447 | Set a static tracepoint at specified line, function or marker.\n\ | |
12448 | \n\ | |
12449 | strace [LOCATION] [if CONDITION]\n\ | |
12450 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12451 | or -m MARKER_ID.\n\ | |
12452 | If a line number is specified, probe the marker at start of code\n\ | |
12453 | for that line. If a function is specified, probe the marker at start\n\ | |
12454 | of code for that function. If an address is specified, probe the marker\n\ | |
12455 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12456 | with that name. With no LOCATION, uses current execution address of\n\ | |
12457 | the selected stack frame.\n\ | |
12458 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12459 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12460 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12461 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12462 | \n\ | |
12463 | CONDITION is a boolean expression.\n\ | |
12464 | \n\ | |
d41c0fc8 PA |
12465 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12466 | conditions are different.\n\ | |
0fb4aa4b PA |
12467 | \n\ |
12468 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12469 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12470 | set_cmd_completer (c, location_completer); | |
12471 | ||
1042e4c0 | 12472 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 12473 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
12474 | Convenience variable \"$tpnum\" contains the number of the\n\ |
12475 | last tracepoint set.")); | |
12476 | ||
12477 | add_info_alias ("tp", "tracepoints", 1); | |
12478 | ||
12479 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12480 | Delete specified tracepoints.\n\ | |
12481 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12482 | No argument means delete all tracepoints."), | |
12483 | &deletelist); | |
12484 | ||
12485 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12486 | Disable specified tracepoints.\n\ | |
12487 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12488 | No argument means disable all tracepoints."), | |
12489 | &disablelist); | |
12490 | deprecate_cmd (c, "disable"); | |
12491 | ||
12492 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12493 | Enable specified tracepoints.\n\ | |
12494 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12495 | No argument means enable all tracepoints."), | |
12496 | &enablelist); | |
12497 | deprecate_cmd (c, "enable"); | |
12498 | ||
12499 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12500 | Set the passcount for a tracepoint.\n\ | |
12501 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12502 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12503 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12504 | ||
6149aea9 PA |
12505 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12506 | _("Save breakpoint definitions as a script."), | |
12507 | &save_cmdlist, "save ", | |
12508 | 0/*allow-unknown*/, &cmdlist); | |
12509 | ||
12510 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12511 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12512 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12513 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12514 | session to restore them."), | |
12515 | &save_cmdlist); | |
12516 | set_cmd_completer (c, filename_completer); | |
12517 | ||
12518 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12519 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12520 | Use the 'source' command in another debug session to restore them."), |
12521 | &save_cmdlist); | |
1042e4c0 SS |
12522 | set_cmd_completer (c, filename_completer); |
12523 | ||
6149aea9 PA |
12524 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12525 | deprecate_cmd (c, "save tracepoints"); | |
12526 | ||
1bedd215 | 12527 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12528 | Breakpoint specific settings\n\ |
12529 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12530 | pending breakpoint behavior"), |
fa8d40ab JJ |
12531 | &breakpoint_set_cmdlist, "set breakpoint ", |
12532 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 12533 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12534 | Breakpoint specific settings\n\ |
12535 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12536 | pending breakpoint behavior"), |
fa8d40ab JJ |
12537 | &breakpoint_show_cmdlist, "show breakpoint ", |
12538 | 0/*allow-unknown*/, &showlist); | |
12539 | ||
7915a72c AC |
12540 | add_setshow_auto_boolean_cmd ("pending", no_class, |
12541 | &pending_break_support, _("\ | |
12542 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
12543 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
12544 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
12545 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
12546 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 12547 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 12548 | NULL, |
920d2a44 | 12549 | show_pending_break_support, |
6e1d7d6c AC |
12550 | &breakpoint_set_cmdlist, |
12551 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
12552 | |
12553 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
12554 | |
12555 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
12556 | &automatic_hardware_breakpoints, _("\ | |
12557 | Set automatic usage of hardware breakpoints."), _("\ | |
12558 | Show automatic usage of hardware breakpoints."), _("\ | |
12559 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
12560 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
12561 | a warning will be emitted for such breakpoints."), | |
12562 | NULL, | |
12563 | show_automatic_hardware_breakpoints, | |
12564 | &breakpoint_set_cmdlist, | |
12565 | &breakpoint_show_cmdlist); | |
74960c60 | 12566 | |
33e5cbd6 PA |
12567 | add_setshow_enum_cmd ("always-inserted", class_support, |
12568 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
12569 | Set mode for inserting breakpoints."), _("\ |
12570 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
12571 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
12572 | resumed, and removed when execution stops. When this mode is on,\n\ | |
12573 | breakpoints are inserted immediately and removed only when the user\n\ | |
12574 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
12575 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
12576 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
12577 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
12578 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
12579 | NULL, |
12580 | &show_always_inserted_mode, | |
12581 | &breakpoint_set_cmdlist, | |
12582 | &breakpoint_show_cmdlist); | |
765dc015 VP |
12583 | |
12584 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
12585 | |
12586 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 12587 | } |