Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7b6bb8da | 5 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
0ba1096a | 42 | #include "filenames.h" |
c906108c SS |
43 | #include "annotate.h" |
44 | #include "symfile.h" | |
45 | #include "objfiles.h" | |
0378c332 | 46 | #include "source.h" |
c5f0f3d0 | 47 | #include "linespec.h" |
c94fdfd0 | 48 | #include "completer.h" |
5b7f31a4 | 49 | #include "gdb.h" |
8b93c638 | 50 | #include "ui-out.h" |
e1507482 | 51 | #include "cli/cli-script.h" |
0225421b | 52 | #include "gdb_assert.h" |
fe898f56 | 53 | #include "block.h" |
a77053c2 | 54 | #include "solib.h" |
84acb35a JJ |
55 | #include "solist.h" |
56 | #include "observer.h" | |
60250e8b | 57 | #include "exceptions.h" |
765dc015 | 58 | #include "memattr.h" |
f7f9143b | 59 | #include "ada-lang.h" |
d1aa2f50 | 60 | #include "top.h" |
fa4727a6 | 61 | #include "wrapper.h" |
79a45b7d | 62 | #include "valprint.h" |
4efc6507 | 63 | #include "jit.h" |
a96d9b2e | 64 | #include "xml-syscall.h" |
65d79d4b | 65 | #include "parser-defs.h" |
e9cafbcc | 66 | #include "cli/cli-utils.h" |
c906108c | 67 | |
1042e4c0 SS |
68 | /* readline include files */ |
69 | #include "readline/readline.h" | |
70 | #include "readline/history.h" | |
71 | ||
72 | /* readline defines this. */ | |
73 | #undef savestring | |
74 | ||
034dad6f | 75 | #include "mi/mi-common.h" |
7371cf6d | 76 | #include "python/python.h" |
104c1213 | 77 | |
44feb3ce TT |
78 | /* Arguments to pass as context to some catch command handlers. */ |
79 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
80 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 81 | |
4a64f543 | 82 | /* Prototypes for local functions. */ |
c906108c | 83 | |
a14ed312 | 84 | static void enable_delete_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_once_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void disable_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void enable_command (char *, int); |
c906108c | 91 | |
95a42b64 TT |
92 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
93 | void *), | |
94 | void *); | |
c906108c | 95 | |
a14ed312 | 96 | static void ignore_command (char *, int); |
c906108c | 97 | |
4efb68b1 | 98 | static int breakpoint_re_set_one (void *); |
c906108c | 99 | |
a14ed312 | 100 | static void clear_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void catch_command (char *, int); |
c906108c | 103 | |
a9634178 | 104 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 105 | |
98deb0da | 106 | static void break_command_1 (char *, int, int); |
c906108c | 107 | |
a14ed312 | 108 | static void mention (struct breakpoint *); |
c906108c | 109 | |
4a64f543 MS |
110 | /* This function is used in gdbtk sources and thus can not be made |
111 | static. */ | |
63c252f8 | 112 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
a6d9a66e UW |
113 | struct symtab_and_line, |
114 | enum bptype); | |
c906108c | 115 | |
76897487 KB |
116 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
117 | ||
a6d9a66e UW |
118 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
119 | CORE_ADDR bpaddr, | |
88f7da05 | 120 | enum bptype bptype); |
76897487 | 121 | |
6c95b8df PA |
122 | static void describe_other_breakpoints (struct gdbarch *, |
123 | struct program_space *, CORE_ADDR, | |
5af949e3 | 124 | struct obj_section *, int); |
c906108c | 125 | |
6c95b8df PA |
126 | static int breakpoint_address_match (struct address_space *aspace1, |
127 | CORE_ADDR addr1, | |
128 | struct address_space *aspace2, | |
129 | CORE_ADDR addr2); | |
130 | ||
85d721b8 PA |
131 | static int watchpoint_locations_match (struct bp_location *loc1, |
132 | struct bp_location *loc2); | |
133 | ||
f1310107 TJB |
134 | static int breakpoint_location_address_match (struct bp_location *bl, |
135 | struct address_space *aspace, | |
136 | CORE_ADDR addr); | |
137 | ||
a14ed312 | 138 | static void breakpoints_info (char *, int); |
c906108c | 139 | |
d77f58be SS |
140 | static void watchpoints_info (char *, int); |
141 | ||
e5a67952 MS |
142 | static int breakpoint_1 (char *, int, |
143 | int (*) (const struct breakpoint *)); | |
c906108c | 144 | |
4efb68b1 | 145 | static int breakpoint_cond_eval (void *); |
c906108c | 146 | |
4efb68b1 | 147 | static void cleanup_executing_breakpoints (void *); |
c906108c | 148 | |
a14ed312 | 149 | static void commands_command (char *, int); |
c906108c | 150 | |
a14ed312 | 151 | static void condition_command (char *, int); |
c906108c | 152 | |
c5aa993b JM |
153 | typedef enum |
154 | { | |
155 | mark_inserted, | |
156 | mark_uninserted | |
157 | } | |
158 | insertion_state_t; | |
c906108c | 159 | |
0bde7532 | 160 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 161 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 162 | |
a14ed312 | 163 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
164 | |
165 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 166 | |
4efb68b1 | 167 | static int watchpoint_check (void *); |
c906108c | 168 | |
a14ed312 | 169 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static int hw_breakpoint_used_count (void); |
c906108c | 172 | |
a14ed312 | 173 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 174 | |
a14ed312 | 175 | static void hbreak_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void thbreak_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 180 | |
a14ed312 | 181 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 188 | |
d85310f7 MS |
189 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
190 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 191 | |
a14ed312 | 192 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 193 | |
d03285ec UW |
194 | static void detach_single_step_breakpoints (void); |
195 | ||
6c95b8df PA |
196 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
197 | CORE_ADDR pc); | |
1aafd4da | 198 | |
fe3f5fa8 | 199 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
200 | static void incref_bp_location (struct bp_location *loc); |
201 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 202 | |
39d61571 | 203 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 204 | |
b60e7edf | 205 | static void update_global_location_list (int); |
a5606eee | 206 | |
b60e7edf | 207 | static void update_global_location_list_nothrow (int); |
74960c60 | 208 | |
d77f58be | 209 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 210 | |
d77f58be | 211 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 212 | |
74960c60 | 213 | static void insert_breakpoint_locations (void); |
a5606eee | 214 | |
a96d9b2e SDJ |
215 | static int syscall_catchpoint_p (struct breakpoint *b); |
216 | ||
1042e4c0 SS |
217 | static void tracepoints_info (char *, int); |
218 | ||
219 | static void delete_trace_command (char *, int); | |
220 | ||
221 | static void enable_trace_command (char *, int); | |
222 | ||
223 | static void disable_trace_command (char *, int); | |
224 | ||
225 | static void trace_pass_command (char *, int); | |
226 | ||
0fb4aa4b PA |
227 | /* Assuming we're creating a static tracepoint, does S look like a |
228 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
229 | #define is_marker_spec(s) \ | |
f5a8e22b | 230 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 231 | |
5cea2a26 PA |
232 | /* A reference-counted struct command_line. This lets multiple |
233 | breakpoints share a single command list. */ | |
234 | struct counted_command_line | |
235 | { | |
236 | /* The reference count. */ | |
237 | int refc; | |
238 | ||
239 | /* The command list. */ | |
240 | struct command_line *commands; | |
241 | }; | |
242 | ||
243 | struct command_line * | |
244 | breakpoint_commands (struct breakpoint *b) | |
245 | { | |
246 | return b->commands ? b->commands->commands : NULL; | |
247 | } | |
3daf8fe5 | 248 | |
f3b1572e PA |
249 | /* Flag indicating that a command has proceeded the inferior past the |
250 | current breakpoint. */ | |
251 | ||
252 | static int breakpoint_proceeded; | |
253 | ||
956a9fb9 | 254 | const char * |
2cec12e5 AR |
255 | bpdisp_text (enum bpdisp disp) |
256 | { | |
4a64f543 MS |
257 | /* NOTE: the following values are a part of MI protocol and |
258 | represent values of 'disp' field returned when inferior stops at | |
259 | a breakpoint. */ | |
bc043ef3 | 260 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 261 | |
2cec12e5 AR |
262 | return bpdisps[(int) disp]; |
263 | } | |
c906108c | 264 | |
4a64f543 | 265 | /* Prototypes for exported functions. */ |
c906108c | 266 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 267 | if such is available. */ |
c906108c SS |
268 | static int can_use_hw_watchpoints; |
269 | ||
920d2a44 AC |
270 | static void |
271 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
272 | struct cmd_list_element *c, | |
273 | const char *value) | |
274 | { | |
3e43a32a MS |
275 | fprintf_filtered (file, |
276 | _("Debugger's willingness to use " | |
277 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
278 | value); |
279 | } | |
280 | ||
fa8d40ab JJ |
281 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
282 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 283 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
284 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
285 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
286 | static void |
287 | show_pending_break_support (struct ui_file *file, int from_tty, | |
288 | struct cmd_list_element *c, | |
289 | const char *value) | |
290 | { | |
3e43a32a MS |
291 | fprintf_filtered (file, |
292 | _("Debugger's behavior regarding " | |
293 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
294 | value); |
295 | } | |
fa8d40ab | 296 | |
765dc015 | 297 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 298 | set with "break" but falling in read-only memory. |
765dc015 VP |
299 | If 0, gdb will warn about such breakpoints, but won't automatically |
300 | use hardware breakpoints. */ | |
301 | static int automatic_hardware_breakpoints; | |
302 | static void | |
303 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
304 | struct cmd_list_element *c, | |
305 | const char *value) | |
306 | { | |
3e43a32a MS |
307 | fprintf_filtered (file, |
308 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
309 | value); |
310 | } | |
311 | ||
33e5cbd6 PA |
312 | /* If on, gdb will keep breakpoints inserted even as inferior is |
313 | stopped, and immediately insert any new breakpoints. If off, gdb | |
314 | will insert breakpoints into inferior only when resuming it, and | |
315 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
316 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
317 | ||
318 | static const char always_inserted_auto[] = "auto"; | |
319 | static const char always_inserted_on[] = "on"; | |
320 | static const char always_inserted_off[] = "off"; | |
321 | static const char *always_inserted_enums[] = { | |
322 | always_inserted_auto, | |
323 | always_inserted_off, | |
324 | always_inserted_on, | |
325 | NULL | |
326 | }; | |
327 | static const char *always_inserted_mode = always_inserted_auto; | |
328 | static void | |
74960c60 | 329 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 330 | struct cmd_list_element *c, const char *value) |
74960c60 | 331 | { |
33e5cbd6 | 332 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
333 | fprintf_filtered (file, |
334 | _("Always inserted breakpoint " | |
335 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
336 | value, |
337 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
338 | else | |
3e43a32a MS |
339 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
340 | value); | |
74960c60 VP |
341 | } |
342 | ||
33e5cbd6 PA |
343 | int |
344 | breakpoints_always_inserted_mode (void) | |
345 | { | |
346 | return (always_inserted_mode == always_inserted_on | |
347 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
348 | } | |
765dc015 | 349 | |
a14ed312 | 350 | void _initialize_breakpoint (void); |
c906108c | 351 | |
c906108c SS |
352 | /* Are we executing breakpoint commands? */ |
353 | static int executing_breakpoint_commands; | |
354 | ||
c02f5703 MS |
355 | /* Are overlay event breakpoints enabled? */ |
356 | static int overlay_events_enabled; | |
357 | ||
e09342b5 TJB |
358 | /* See description in breakpoint.h. */ |
359 | int target_exact_watchpoints = 0; | |
360 | ||
c906108c | 361 | /* Walk the following statement or block through all breakpoints. |
4a64f543 MS |
362 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the |
363 | current breakpoint. */ | |
c906108c | 364 | |
5c44784c | 365 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 366 | |
5c44784c JM |
367 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
368 | for (B = breakpoint_chain; \ | |
369 | B ? (TMP=B->next, 1): 0; \ | |
370 | B = TMP) | |
c906108c | 371 | |
4a64f543 MS |
372 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
373 | not provided so update_global_location_list must not be called | |
374 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 375 | |
876fa593 JK |
376 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
377 | for (BP_TMP = bp_location; \ | |
378 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
379 | BP_TMP++) | |
7cc221ef | 380 | |
1042e4c0 SS |
381 | /* Iterator for tracepoints only. */ |
382 | ||
383 | #define ALL_TRACEPOINTS(B) \ | |
384 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 385 | if (is_tracepoint (B)) |
1042e4c0 | 386 | |
7cc221ef | 387 | /* Chains of all breakpoints defined. */ |
c906108c SS |
388 | |
389 | struct breakpoint *breakpoint_chain; | |
390 | ||
876fa593 JK |
391 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
392 | ||
393 | static struct bp_location **bp_location; | |
394 | ||
395 | /* Number of elements of BP_LOCATION. */ | |
396 | ||
397 | static unsigned bp_location_count; | |
398 | ||
4a64f543 MS |
399 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
400 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
401 | result from bp_location_has_shadow. You can use it for roughly | |
402 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
403 | an address you need to read. */ | |
876fa593 JK |
404 | |
405 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
406 | ||
4a64f543 MS |
407 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
408 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
409 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
410 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
411 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
412 | |
413 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 414 | |
4a64f543 MS |
415 | /* The locations that no longer correspond to any breakpoint, unlinked |
416 | from bp_location array, but for which a hit may still be reported | |
417 | by a target. */ | |
20874c92 VP |
418 | VEC(bp_location_p) *moribund_locations = NULL; |
419 | ||
c906108c SS |
420 | /* Number of last breakpoint made. */ |
421 | ||
95a42b64 TT |
422 | static int breakpoint_count; |
423 | ||
86b17b60 PA |
424 | /* The value of `breakpoint_count' before the last command that |
425 | created breakpoints. If the last (break-like) command created more | |
426 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
427 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
428 | static int prev_breakpoint_count; | |
c906108c | 429 | |
1042e4c0 SS |
430 | /* Number of last tracepoint made. */ |
431 | ||
95a42b64 | 432 | static int tracepoint_count; |
1042e4c0 | 433 | |
6149aea9 PA |
434 | static struct cmd_list_element *breakpoint_set_cmdlist; |
435 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 436 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 437 | |
468d015d JJ |
438 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
439 | static int | |
440 | breakpoint_enabled (struct breakpoint *b) | |
441 | { | |
0d381245 | 442 | return (b->enable_state == bp_enabled); |
468d015d JJ |
443 | } |
444 | ||
c906108c SS |
445 | /* Set breakpoint count to NUM. */ |
446 | ||
95a42b64 | 447 | static void |
fba45db2 | 448 | set_breakpoint_count (int num) |
c906108c | 449 | { |
86b17b60 | 450 | prev_breakpoint_count = breakpoint_count; |
c906108c | 451 | breakpoint_count = num; |
4fa62494 | 452 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
453 | } |
454 | ||
86b17b60 PA |
455 | /* Used by `start_rbreak_breakpoints' below, to record the current |
456 | breakpoint count before "rbreak" creates any breakpoint. */ | |
457 | static int rbreak_start_breakpoint_count; | |
458 | ||
95a42b64 TT |
459 | /* Called at the start an "rbreak" command to record the first |
460 | breakpoint made. */ | |
86b17b60 | 461 | |
95a42b64 TT |
462 | void |
463 | start_rbreak_breakpoints (void) | |
464 | { | |
86b17b60 | 465 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
466 | } |
467 | ||
468 | /* Called at the end of an "rbreak" command to record the last | |
469 | breakpoint made. */ | |
86b17b60 | 470 | |
95a42b64 TT |
471 | void |
472 | end_rbreak_breakpoints (void) | |
473 | { | |
86b17b60 | 474 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
475 | } |
476 | ||
4a64f543 | 477 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
478 | |
479 | void | |
fba45db2 | 480 | clear_breakpoint_hit_counts (void) |
c906108c SS |
481 | { |
482 | struct breakpoint *b; | |
483 | ||
484 | ALL_BREAKPOINTS (b) | |
485 | b->hit_count = 0; | |
486 | } | |
487 | ||
9add0f1b TT |
488 | /* Allocate a new counted_command_line with reference count of 1. |
489 | The new structure owns COMMANDS. */ | |
490 | ||
491 | static struct counted_command_line * | |
492 | alloc_counted_command_line (struct command_line *commands) | |
493 | { | |
494 | struct counted_command_line *result | |
495 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 496 | |
9add0f1b TT |
497 | result->refc = 1; |
498 | result->commands = commands; | |
499 | return result; | |
500 | } | |
501 | ||
502 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
503 | ||
504 | static void | |
505 | incref_counted_command_line (struct counted_command_line *cmd) | |
506 | { | |
507 | if (cmd) | |
508 | ++cmd->refc; | |
509 | } | |
510 | ||
511 | /* Decrement reference count. If the reference count reaches 0, | |
512 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
513 | nothing if *CMDP is NULL. */ | |
514 | ||
515 | static void | |
516 | decref_counted_command_line (struct counted_command_line **cmdp) | |
517 | { | |
518 | if (*cmdp) | |
519 | { | |
520 | if (--(*cmdp)->refc == 0) | |
521 | { | |
522 | free_command_lines (&(*cmdp)->commands); | |
523 | xfree (*cmdp); | |
524 | } | |
525 | *cmdp = NULL; | |
526 | } | |
527 | } | |
528 | ||
529 | /* A cleanup function that calls decref_counted_command_line. */ | |
530 | ||
531 | static void | |
532 | do_cleanup_counted_command_line (void *arg) | |
533 | { | |
534 | decref_counted_command_line (arg); | |
535 | } | |
536 | ||
537 | /* Create a cleanup that calls decref_counted_command_line on the | |
538 | argument. */ | |
539 | ||
540 | static struct cleanup * | |
541 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
542 | { | |
543 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
544 | } | |
545 | ||
c906108c SS |
546 | /* Default address, symtab and line to put a breakpoint at |
547 | for "break" command with no arg. | |
4a64f543 | 548 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
549 | not valid, and "break" with no arg is an error. |
550 | ||
551 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
552 | ||
553 | int default_breakpoint_valid; | |
554 | CORE_ADDR default_breakpoint_address; | |
555 | struct symtab *default_breakpoint_symtab; | |
556 | int default_breakpoint_line; | |
6c95b8df PA |
557 | struct program_space *default_breakpoint_pspace; |
558 | ||
c906108c | 559 | \f |
48cb2d85 VP |
560 | /* Return the breakpoint with the specified number, or NULL |
561 | if the number does not refer to an existing breakpoint. */ | |
562 | ||
563 | struct breakpoint * | |
564 | get_breakpoint (int num) | |
565 | { | |
566 | struct breakpoint *b; | |
567 | ||
568 | ALL_BREAKPOINTS (b) | |
569 | if (b->number == num) | |
570 | return b; | |
571 | ||
572 | return NULL; | |
573 | } | |
5c44784c | 574 | |
c906108c | 575 | \f |
adc36818 PM |
576 | |
577 | void | |
578 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
579 | int from_tty) | |
580 | { | |
581 | struct bp_location *loc = b->loc; | |
582 | ||
583 | for (; loc; loc = loc->next) | |
584 | { | |
585 | xfree (loc->cond); | |
586 | loc->cond = NULL; | |
587 | } | |
588 | xfree (b->cond_string); | |
589 | b->cond_string = NULL; | |
590 | xfree (b->cond_exp); | |
591 | b->cond_exp = NULL; | |
592 | ||
593 | if (*exp == 0) | |
594 | { | |
595 | if (from_tty) | |
596 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
597 | } | |
598 | else | |
599 | { | |
600 | char *arg = exp; | |
cc59ec59 | 601 | |
adc36818 PM |
602 | /* I don't know if it matters whether this is the string the user |
603 | typed in or the decompiled expression. */ | |
604 | b->cond_string = xstrdup (arg); | |
605 | b->condition_not_parsed = 0; | |
606 | ||
607 | if (is_watchpoint (b)) | |
608 | { | |
609 | innermost_block = NULL; | |
610 | arg = exp; | |
611 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
612 | if (*arg) | |
613 | error (_("Junk at end of expression")); | |
614 | b->cond_exp_valid_block = innermost_block; | |
615 | } | |
616 | else | |
617 | { | |
618 | for (loc = b->loc; loc; loc = loc->next) | |
619 | { | |
620 | arg = exp; | |
621 | loc->cond = | |
622 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
623 | if (*arg) | |
624 | error (_("Junk at end of expression")); | |
625 | } | |
626 | } | |
627 | } | |
628 | breakpoints_changed (); | |
8d3788bd | 629 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
630 | } |
631 | ||
c906108c SS |
632 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
633 | ||
634 | static void | |
fba45db2 | 635 | condition_command (char *arg, int from_tty) |
c906108c | 636 | { |
52f0bd74 | 637 | struct breakpoint *b; |
c906108c | 638 | char *p; |
52f0bd74 | 639 | int bnum; |
c906108c SS |
640 | |
641 | if (arg == 0) | |
e2e0b3e5 | 642 | error_no_arg (_("breakpoint number")); |
c906108c SS |
643 | |
644 | p = arg; | |
645 | bnum = get_number (&p); | |
5c44784c | 646 | if (bnum == 0) |
8a3fe4f8 | 647 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
648 | |
649 | ALL_BREAKPOINTS (b) | |
650 | if (b->number == bnum) | |
2f069f6f | 651 | { |
7371cf6d PM |
652 | /* Check if this breakpoint has a Python object assigned to |
653 | it, and if it has a definition of the "stop" | |
654 | method. This method and conditions entered into GDB from | |
655 | the CLI are mutually exclusive. */ | |
656 | if (b->py_bp_object | |
657 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
658 | error (_("Cannot set a condition where a Python 'stop' " | |
659 | "method has been defined in the breakpoint.")); | |
2566ad2d | 660 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
661 | return; |
662 | } | |
c906108c | 663 | |
8a3fe4f8 | 664 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
665 | } |
666 | ||
a7bdde9e VP |
667 | /* Check that COMMAND do not contain commands that are suitable |
668 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
669 | Throw if any such commands is found. */ |
670 | ||
a7bdde9e VP |
671 | static void |
672 | check_no_tracepoint_commands (struct command_line *commands) | |
673 | { | |
674 | struct command_line *c; | |
cc59ec59 | 675 | |
a7bdde9e VP |
676 | for (c = commands; c; c = c->next) |
677 | { | |
678 | int i; | |
679 | ||
680 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
681 | error (_("The 'while-stepping' command can " |
682 | "only be used for tracepoints")); | |
a7bdde9e VP |
683 | |
684 | for (i = 0; i < c->body_count; ++i) | |
685 | check_no_tracepoint_commands ((c->body_list)[i]); | |
686 | ||
687 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 688 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
689 | command directly. */ |
690 | if (strstr (c->line, "collect ") == c->line) | |
691 | error (_("The 'collect' command can only be used for tracepoints")); | |
692 | ||
51661e93 VP |
693 | if (strstr (c->line, "teval ") == c->line) |
694 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
695 | } |
696 | } | |
697 | ||
d77f58be SS |
698 | /* Encapsulate tests for different types of tracepoints. */ |
699 | ||
a7bdde9e | 700 | int |
d77f58be | 701 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 702 | { |
0fb4aa4b PA |
703 | return (b->type == bp_tracepoint |
704 | || b->type == bp_fast_tracepoint | |
705 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 706 | } |
d77f58be | 707 | |
95a42b64 TT |
708 | /* A helper function that validsates that COMMANDS are valid for a |
709 | breakpoint. This function will throw an exception if a problem is | |
710 | found. */ | |
48cb2d85 | 711 | |
95a42b64 TT |
712 | static void |
713 | validate_commands_for_breakpoint (struct breakpoint *b, | |
714 | struct command_line *commands) | |
48cb2d85 | 715 | { |
d77f58be | 716 | if (is_tracepoint (b)) |
a7bdde9e | 717 | { |
4a64f543 MS |
718 | /* We need to verify that each top-level element of commands is |
719 | valid for tracepoints, that there's at most one | |
720 | while-stepping element, and that while-stepping's body has | |
721 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
722 | struct command_line *c; |
723 | struct command_line *while_stepping = 0; | |
724 | for (c = commands; c; c = c->next) | |
725 | { | |
a7bdde9e VP |
726 | if (c->control_type == while_stepping_control) |
727 | { | |
728 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
729 | error (_("The 'while-stepping' command " |
730 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 731 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
732 | error (_("The 'while-stepping' command " |
733 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
734 | |
735 | if (while_stepping) | |
3e43a32a MS |
736 | error (_("The 'while-stepping' command " |
737 | "can be used only once")); | |
a7bdde9e VP |
738 | else |
739 | while_stepping = c; | |
740 | } | |
741 | } | |
742 | if (while_stepping) | |
743 | { | |
744 | struct command_line *c2; | |
745 | ||
746 | gdb_assert (while_stepping->body_count == 1); | |
747 | c2 = while_stepping->body_list[0]; | |
748 | for (; c2; c2 = c2->next) | |
749 | { | |
a7bdde9e VP |
750 | if (c2->control_type == while_stepping_control) |
751 | error (_("The 'while-stepping' command cannot be nested")); | |
752 | } | |
753 | } | |
754 | } | |
755 | else | |
756 | { | |
757 | check_no_tracepoint_commands (commands); | |
758 | } | |
95a42b64 TT |
759 | } |
760 | ||
0fb4aa4b PA |
761 | /* Return a vector of all the static tracepoints set at ADDR. The |
762 | caller is responsible for releasing the vector. */ | |
763 | ||
764 | VEC(breakpoint_p) * | |
765 | static_tracepoints_here (CORE_ADDR addr) | |
766 | { | |
767 | struct breakpoint *b; | |
768 | VEC(breakpoint_p) *found = 0; | |
769 | struct bp_location *loc; | |
770 | ||
771 | ALL_BREAKPOINTS (b) | |
772 | if (b->type == bp_static_tracepoint) | |
773 | { | |
774 | for (loc = b->loc; loc; loc = loc->next) | |
775 | if (loc->address == addr) | |
776 | VEC_safe_push(breakpoint_p, found, b); | |
777 | } | |
778 | ||
779 | return found; | |
780 | } | |
781 | ||
95a42b64 | 782 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 783 | validate that only allowed commands are included. */ |
95a42b64 TT |
784 | |
785 | void | |
4a64f543 MS |
786 | breakpoint_set_commands (struct breakpoint *b, |
787 | struct command_line *commands) | |
95a42b64 TT |
788 | { |
789 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 790 | |
9add0f1b TT |
791 | decref_counted_command_line (&b->commands); |
792 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 793 | breakpoints_changed (); |
8d3788bd | 794 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
795 | } |
796 | ||
45a43567 TT |
797 | /* Set the internal `silent' flag on the breakpoint. Note that this |
798 | is not the same as the "silent" that may appear in the breakpoint's | |
799 | commands. */ | |
800 | ||
801 | void | |
802 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
803 | { | |
804 | int old_silent = b->silent; | |
805 | ||
806 | b->silent = silent; | |
807 | if (old_silent != silent) | |
8d3788bd | 808 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
809 | } |
810 | ||
811 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
812 | breakpoint work for any thread. */ | |
813 | ||
814 | void | |
815 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
816 | { | |
817 | int old_thread = b->thread; | |
818 | ||
819 | b->thread = thread; | |
820 | if (old_thread != thread) | |
8d3788bd | 821 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
822 | } |
823 | ||
824 | /* Set the task for this breakpoint. If TASK is 0, make the | |
825 | breakpoint work for any task. */ | |
826 | ||
827 | void | |
828 | breakpoint_set_task (struct breakpoint *b, int task) | |
829 | { | |
830 | int old_task = b->task; | |
831 | ||
832 | b->task = task; | |
833 | if (old_task != task) | |
8d3788bd | 834 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
835 | } |
836 | ||
95a42b64 TT |
837 | void |
838 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
839 | { |
840 | struct breakpoint *b = closure; | |
cc59ec59 | 841 | |
a7bdde9e VP |
842 | validate_actionline (&line, b); |
843 | } | |
844 | ||
95a42b64 TT |
845 | /* A structure used to pass information through |
846 | map_breakpoint_numbers. */ | |
847 | ||
848 | struct commands_info | |
849 | { | |
850 | /* True if the command was typed at a tty. */ | |
851 | int from_tty; | |
86b17b60 PA |
852 | |
853 | /* The breakpoint range spec. */ | |
854 | char *arg; | |
855 | ||
95a42b64 TT |
856 | /* Non-NULL if the body of the commands are being read from this |
857 | already-parsed command. */ | |
858 | struct command_line *control; | |
86b17b60 | 859 | |
95a42b64 TT |
860 | /* The command lines read from the user, or NULL if they have not |
861 | yet been read. */ | |
862 | struct counted_command_line *cmd; | |
863 | }; | |
864 | ||
865 | /* A callback for map_breakpoint_numbers that sets the commands for | |
866 | commands_command. */ | |
867 | ||
c906108c | 868 | static void |
95a42b64 | 869 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 870 | { |
95a42b64 | 871 | struct commands_info *info = data; |
c906108c | 872 | |
95a42b64 TT |
873 | if (info->cmd == NULL) |
874 | { | |
875 | struct command_line *l; | |
5c44784c | 876 | |
95a42b64 TT |
877 | if (info->control != NULL) |
878 | l = copy_command_lines (info->control->body_list[0]); | |
879 | else | |
86b17b60 PA |
880 | { |
881 | struct cleanup *old_chain; | |
882 | char *str; | |
c5aa993b | 883 | |
3e43a32a MS |
884 | str = xstrprintf (_("Type commands for breakpoint(s) " |
885 | "%s, one per line."), | |
86b17b60 PA |
886 | info->arg); |
887 | ||
888 | old_chain = make_cleanup (xfree, str); | |
889 | ||
890 | l = read_command_lines (str, | |
891 | info->from_tty, 1, | |
d77f58be | 892 | (is_tracepoint (b) |
86b17b60 PA |
893 | ? check_tracepoint_command : 0), |
894 | b); | |
895 | ||
896 | do_cleanups (old_chain); | |
897 | } | |
a7bdde9e | 898 | |
95a42b64 TT |
899 | info->cmd = alloc_counted_command_line (l); |
900 | } | |
901 | ||
902 | /* If a breakpoint was on the list more than once, we don't need to | |
903 | do anything. */ | |
904 | if (b->commands != info->cmd) | |
905 | { | |
906 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
907 | incref_counted_command_line (info->cmd); | |
908 | decref_counted_command_line (&b->commands); | |
909 | b->commands = info->cmd; | |
910 | breakpoints_changed (); | |
8d3788bd | 911 | observer_notify_breakpoint_modified (b); |
c5aa993b | 912 | } |
95a42b64 TT |
913 | } |
914 | ||
915 | static void | |
4a64f543 MS |
916 | commands_command_1 (char *arg, int from_tty, |
917 | struct command_line *control) | |
95a42b64 TT |
918 | { |
919 | struct cleanup *cleanups; | |
920 | struct commands_info info; | |
921 | ||
922 | info.from_tty = from_tty; | |
923 | info.control = control; | |
924 | info.cmd = NULL; | |
925 | /* If we read command lines from the user, then `info' will hold an | |
926 | extra reference to the commands that we must clean up. */ | |
927 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
928 | ||
929 | if (arg == NULL || !*arg) | |
930 | { | |
86b17b60 | 931 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
932 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
933 | breakpoint_count); | |
95a42b64 TT |
934 | else if (breakpoint_count > 0) |
935 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
936 | else |
937 | { | |
938 | /* So that we don't try to free the incoming non-NULL | |
939 | argument in the cleanup below. Mapping breakpoint | |
940 | numbers will fail in this case. */ | |
941 | arg = NULL; | |
942 | } | |
95a42b64 | 943 | } |
9766ced4 SS |
944 | else |
945 | /* The command loop has some static state, so we need to preserve | |
946 | our argument. */ | |
947 | arg = xstrdup (arg); | |
86b17b60 PA |
948 | |
949 | if (arg != NULL) | |
950 | make_cleanup (xfree, arg); | |
951 | ||
952 | info.arg = arg; | |
95a42b64 TT |
953 | |
954 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
955 | ||
956 | if (info.cmd == NULL) | |
957 | error (_("No breakpoints specified.")); | |
958 | ||
959 | do_cleanups (cleanups); | |
960 | } | |
961 | ||
962 | static void | |
963 | commands_command (char *arg, int from_tty) | |
964 | { | |
965 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 966 | } |
40c03ae8 EZ |
967 | |
968 | /* Like commands_command, but instead of reading the commands from | |
969 | input stream, takes them from an already parsed command structure. | |
970 | ||
971 | This is used by cli-script.c to DTRT with breakpoint commands | |
972 | that are part of if and while bodies. */ | |
973 | enum command_control_type | |
974 | commands_from_control_command (char *arg, struct command_line *cmd) | |
975 | { | |
95a42b64 TT |
976 | commands_command_1 (arg, 0, cmd); |
977 | return simple_control; | |
40c03ae8 | 978 | } |
876fa593 JK |
979 | |
980 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
981 | ||
982 | static int | |
983 | bp_location_has_shadow (struct bp_location *bl) | |
984 | { | |
985 | if (bl->loc_type != bp_loc_software_breakpoint) | |
986 | return 0; | |
987 | if (!bl->inserted) | |
988 | return 0; | |
989 | if (bl->target_info.shadow_len == 0) | |
990 | /* bp isn't valid, or doesn't shadow memory. */ | |
991 | return 0; | |
992 | return 1; | |
993 | } | |
994 | ||
8defab1a | 995 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
996 | by replacing any memory breakpoints with their shadowed contents. |
997 | ||
998 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
999 | bl->address - bp_location_placed_address_before_address_max |
1000 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1001 | The range we were requested to resolve shadows for is: |
1002 | memaddr ... memaddr + len | |
1003 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1004 | memaddr + len <= (bl->address |
1005 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1006 | and: |
35df4500 | 1007 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1008 | |
8defab1a DJ |
1009 | void |
1010 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1011 | { |
4a64f543 MS |
1012 | /* Left boundary, right boundary and median element of our binary |
1013 | search. */ | |
876fa593 JK |
1014 | unsigned bc_l, bc_r, bc; |
1015 | ||
4a64f543 MS |
1016 | /* Find BC_L which is a leftmost element which may affect BUF |
1017 | content. It is safe to report lower value but a failure to | |
1018 | report higher one. */ | |
876fa593 JK |
1019 | |
1020 | bc_l = 0; | |
1021 | bc_r = bp_location_count; | |
1022 | while (bc_l + 1 < bc_r) | |
1023 | { | |
35df4500 | 1024 | struct bp_location *bl; |
876fa593 JK |
1025 | |
1026 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1027 | bl = bp_location[bc]; |
876fa593 | 1028 | |
4a64f543 MS |
1029 | /* Check first BL->ADDRESS will not overflow due to the added |
1030 | constant. Then advance the left boundary only if we are sure | |
1031 | the BC element can in no way affect the BUF content (MEMADDR | |
1032 | to MEMADDR + LEN range). | |
876fa593 | 1033 | |
4a64f543 MS |
1034 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1035 | offset so that we cannot miss a breakpoint with its shadow | |
1036 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1037 | |
35df4500 TJB |
1038 | if ((bl->address + bp_location_shadow_len_after_address_max |
1039 | >= bl->address) | |
1040 | && (bl->address + bp_location_shadow_len_after_address_max | |
1041 | <= memaddr)) | |
876fa593 JK |
1042 | bc_l = bc; |
1043 | else | |
1044 | bc_r = bc; | |
1045 | } | |
1046 | ||
128070bb PA |
1047 | /* Due to the binary search above, we need to make sure we pick the |
1048 | first location that's at BC_L's address. E.g., if there are | |
1049 | multiple locations at the same address, BC_L may end up pointing | |
1050 | at a duplicate location, and miss the "master"/"inserted" | |
1051 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1052 | B: | |
1053 | ||
1054 | L1@A, L2@A, L3@B, ... | |
1055 | ||
1056 | BC_L could end up pointing at location L2, while the "master" | |
1057 | location could be L1. Since the `loc->inserted' flag is only set | |
1058 | on "master" locations, we'd forget to restore the shadow of L1 | |
1059 | and L2. */ | |
1060 | while (bc_l > 0 | |
1061 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1062 | bc_l--; | |
1063 | ||
876fa593 JK |
1064 | /* Now do full processing of the found relevant range of elements. */ |
1065 | ||
1066 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1067 | { |
35df4500 | 1068 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1069 | CORE_ADDR bp_addr = 0; |
1070 | int bp_size = 0; | |
1071 | int bptoffset = 0; | |
1072 | ||
35df4500 TJB |
1073 | /* bp_location array has BL->OWNER always non-NULL. */ |
1074 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1075 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1076 | bl->owner->number); |
ffce0d52 | 1077 | |
876fa593 JK |
1078 | /* Performance optimization: any futher element can no longer affect BUF |
1079 | content. */ | |
1080 | ||
35df4500 TJB |
1081 | if (bl->address >= bp_location_placed_address_before_address_max |
1082 | && memaddr + len <= (bl->address | |
1083 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1084 | break; |
1085 | ||
35df4500 | 1086 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1087 | continue; |
35df4500 | 1088 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1089 | current_program_space->aspace, 0)) |
1090 | continue; | |
1091 | ||
c5aa993b JM |
1092 | /* Addresses and length of the part of the breakpoint that |
1093 | we need to copy. */ | |
35df4500 TJB |
1094 | bp_addr = bl->target_info.placed_address; |
1095 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1096 | |
c5aa993b JM |
1097 | if (bp_addr + bp_size <= memaddr) |
1098 | /* The breakpoint is entirely before the chunk of memory we | |
1099 | are reading. */ | |
1100 | continue; | |
8defab1a | 1101 | |
c5aa993b JM |
1102 | if (bp_addr >= memaddr + len) |
1103 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1104 | reading. */ |
c5aa993b | 1105 | continue; |
c5aa993b | 1106 | |
8defab1a DJ |
1107 | /* Offset within shadow_contents. */ |
1108 | if (bp_addr < memaddr) | |
1109 | { | |
1110 | /* Only copy the second part of the breakpoint. */ | |
1111 | bp_size -= memaddr - bp_addr; | |
1112 | bptoffset = memaddr - bp_addr; | |
1113 | bp_addr = memaddr; | |
1114 | } | |
c5aa993b | 1115 | |
8defab1a DJ |
1116 | if (bp_addr + bp_size > memaddr + len) |
1117 | { | |
1118 | /* Only copy the first part of the breakpoint. */ | |
1119 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1120 | } | |
c5aa993b | 1121 | |
8defab1a | 1122 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1123 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1124 | } |
c906108c | 1125 | } |
c906108c | 1126 | \f |
c5aa993b | 1127 | |
60e1c644 PA |
1128 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1129 | ||
a5606eee | 1130 | static int |
d77f58be | 1131 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1132 | { |
1133 | return (bpt->type == bp_hardware_watchpoint | |
1134 | || bpt->type == bp_read_watchpoint | |
1135 | || bpt->type == bp_access_watchpoint); | |
1136 | } | |
7270d8f2 | 1137 | |
60e1c644 PA |
1138 | /* Return true if BPT is of any watchpoint kind, hardware or |
1139 | software. */ | |
1140 | ||
1141 | static int | |
d77f58be | 1142 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1143 | { |
1144 | return (is_hardware_watchpoint (bpt) | |
1145 | || bpt->type == bp_watchpoint); | |
1146 | } | |
1147 | ||
f6bc2008 PA |
1148 | /* Assuming that B is a watchpoint: returns true if the current thread |
1149 | and its running state are safe to evaluate or update watchpoint B. | |
1150 | Watchpoints on local expressions need to be evaluated in the | |
1151 | context of the thread that was current when the watchpoint was | |
1152 | created, and, that thread needs to be stopped to be able to select | |
1153 | the correct frame context. Watchpoints on global expressions can | |
1154 | be evaluated on any thread, and in any state. It is presently left | |
1155 | to the target allowing memory accesses when threads are | |
1156 | running. */ | |
1157 | ||
1158 | static int | |
1159 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1160 | { | |
1161 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1162 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1163 | && !is_executing (inferior_ptid))); | |
1164 | } | |
1165 | ||
d0fb5eae JK |
1166 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1167 | associated bp_watchpoint_scope breakpoint. */ | |
1168 | ||
1169 | static void | |
1170 | watchpoint_del_at_next_stop (struct breakpoint *b) | |
1171 | { | |
1172 | gdb_assert (is_watchpoint (b)); | |
1173 | ||
1174 | if (b->related_breakpoint != b) | |
1175 | { | |
1176 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1177 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1178 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1179 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1180 | b->related_breakpoint = b; | |
1181 | } | |
1182 | b->disposition = disp_del_at_next_stop; | |
1183 | } | |
1184 | ||
567e1b4e JB |
1185 | /* Assuming that B is a watchpoint: |
1186 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1187 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1188 | - Evaluate the condition if there is one, and store the result |
1189 | in b->loc->cond. | |
a5606eee VP |
1190 | - Update the list of values that must be watched in B->loc. |
1191 | ||
4a64f543 MS |
1192 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1193 | nothing. If this is local watchpoint that is out of scope, delete | |
1194 | it. | |
1195 | ||
1196 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1197 | removed + inserted on each stop here. Normal breakpoints must | |
1198 | never be removed because they might be missed by a running thread | |
1199 | when debugging in non-stop mode. On the other hand, hardware | |
1200 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1201 | to each LWP since they are stored in each LWP's hardware debug | |
1202 | registers. Therefore, such LWP must be stopped first in order to | |
1203 | be able to modify its hardware watchpoints. | |
1204 | ||
1205 | Hardware watchpoints must be reset exactly once after being | |
1206 | presented to the user. It cannot be done sooner, because it would | |
1207 | reset the data used to present the watchpoint hit to the user. And | |
1208 | it must not be done later because it could display the same single | |
1209 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1210 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1211 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1212 | not user-visible - its hit is suppressed if the memory content has | |
1213 | not changed. | |
1214 | ||
1215 | The following constraints influence the location where we can reset | |
1216 | hardware watchpoints: | |
1217 | ||
1218 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1219 | called several times when GDB stops. | |
1220 | ||
1221 | [linux] | |
1222 | * Multiple hardware watchpoints can be hit at the same time, | |
1223 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1224 | hit at a time as the reason for stopping, and all the other hits | |
1225 | are presented later, one after the other, each time the user | |
1226 | requests the execution to be resumed. Execution is not resumed | |
1227 | for the threads still having pending hit event stored in | |
1228 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1229 | the inferior on the first stop the thread hit event is kept being | |
1230 | reported from its cached value by linux_nat_stopped_data_address | |
1231 | until the real thread resume happens after the watchpoint gets | |
1232 | presented and thus its LWP_INFO->STATUS gets reset. | |
1233 | ||
1234 | Therefore the hardware watchpoint hit can get safely reset on the | |
1235 | watchpoint removal from inferior. */ | |
a79d3c27 | 1236 | |
b40ce68a | 1237 | static void |
a5606eee | 1238 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1239 | { |
a5606eee | 1240 | int within_current_scope; |
a5606eee | 1241 | struct frame_id saved_frame_id; |
66076460 | 1242 | int frame_saved; |
a5606eee | 1243 | |
d0fb5eae JK |
1244 | gdb_assert (is_watchpoint (b)); |
1245 | ||
f6bc2008 PA |
1246 | /* If this is a local watchpoint, we only want to check if the |
1247 | watchpoint frame is in scope if the current thread is the thread | |
1248 | that was used to create the watchpoint. */ | |
1249 | if (!watchpoint_in_thread_scope (b)) | |
1250 | return; | |
1251 | ||
a5606eee VP |
1252 | if (b->disposition == disp_del_at_next_stop) |
1253 | return; | |
1254 | ||
66076460 | 1255 | frame_saved = 0; |
a5606eee VP |
1256 | |
1257 | /* Determine if the watchpoint is within scope. */ | |
1258 | if (b->exp_valid_block == NULL) | |
1259 | within_current_scope = 1; | |
1260 | else | |
1261 | { | |
b5db5dfc UW |
1262 | struct frame_info *fi = get_current_frame (); |
1263 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1264 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1265 | ||
1266 | /* If we're in a function epilogue, unwinding may not work | |
1267 | properly, so do not attempt to recreate locations at this | |
1268 | point. See similar comments in watchpoint_check. */ | |
1269 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1270 | return; | |
66076460 DJ |
1271 | |
1272 | /* Save the current frame's ID so we can restore it after | |
1273 | evaluating the watchpoint expression on its own frame. */ | |
1274 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1275 | took a frame parameter, so that we didn't have to change the | |
1276 | selected frame. */ | |
1277 | frame_saved = 1; | |
1278 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1279 | ||
a5606eee VP |
1280 | fi = frame_find_by_id (b->watchpoint_frame); |
1281 | within_current_scope = (fi != NULL); | |
1282 | if (within_current_scope) | |
1283 | select_frame (fi); | |
1284 | } | |
1285 | ||
b5db5dfc UW |
1286 | /* We don't free locations. They are stored in the bp_location array |
1287 | and update_global_location_list will eventually delete them and | |
1288 | remove breakpoints if needed. */ | |
1289 | b->loc = NULL; | |
1290 | ||
a5606eee VP |
1291 | if (within_current_scope && reparse) |
1292 | { | |
1293 | char *s; | |
d63d0675 | 1294 | |
a5606eee VP |
1295 | if (b->exp) |
1296 | { | |
1297 | xfree (b->exp); | |
1298 | b->exp = NULL; | |
1299 | } | |
d63d0675 | 1300 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1301 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1302 | /* If the meaning of expression itself changed, the old value is | |
1303 | no longer relevant. We don't want to report a watchpoint hit | |
1304 | to the user when the old value and the new value may actually | |
1305 | be completely different objects. */ | |
1306 | value_free (b->val); | |
fa4727a6 DJ |
1307 | b->val = NULL; |
1308 | b->val_valid = 0; | |
60e1c644 PA |
1309 | |
1310 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1311 | expression is stored in the breakpoint object, not in the | |
1312 | locations (re)created below. */ | |
1313 | if (b->cond_string != NULL) | |
1314 | { | |
1315 | if (b->cond_exp != NULL) | |
1316 | { | |
1317 | xfree (b->cond_exp); | |
1318 | b->cond_exp = NULL; | |
1319 | } | |
1320 | ||
1321 | s = b->cond_string; | |
1322 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1323 | } | |
a5606eee | 1324 | } |
a5606eee VP |
1325 | |
1326 | /* If we failed to parse the expression, for example because | |
1327 | it refers to a global variable in a not-yet-loaded shared library, | |
1328 | don't try to insert watchpoint. We don't automatically delete | |
1329 | such watchpoint, though, since failure to parse expression | |
1330 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1331 | if ( !target_has_execution) |
1332 | { | |
1333 | /* Without execution, memory can't change. No use to try and | |
1334 | set watchpoint locations. The watchpoint will be reset when | |
1335 | the target gains execution, through breakpoint_re_set. */ | |
1336 | } | |
1337 | else if (within_current_scope && b->exp) | |
a5606eee | 1338 | { |
0cf6dd15 | 1339 | int pc = 0; |
fa4727a6 | 1340 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1341 | struct program_space *frame_pspace; |
a5606eee | 1342 | |
0cf6dd15 | 1343 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1344 | |
a5606eee VP |
1345 | /* Avoid setting b->val if it's already set. The meaning of |
1346 | b->val is 'the last value' user saw, and we should update | |
1347 | it only if we reported that last value to user. As it | |
1348 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1349 | if (!b->val_valid) |
1350 | { | |
1351 | b->val = v; | |
1352 | b->val_valid = 1; | |
1353 | } | |
a5606eee | 1354 | |
2d134ed3 PA |
1355 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1356 | ||
a5606eee | 1357 | /* Look at each value on the value chain. */ |
9fa40276 | 1358 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1359 | { |
1360 | /* If it's a memory location, and GDB actually needed | |
1361 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1362 | must watch it. If the first value returned is |
1363 | still lazy, that means an error occurred reading it; | |
1364 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1365 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1366 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1367 | { |
1368 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1369 | |
a5606eee VP |
1370 | /* We only watch structs and arrays if user asked |
1371 | for it explicitly, never if they just happen to | |
1372 | appear in the middle of some value chain. */ | |
fa4727a6 | 1373 | if (v == result |
a5606eee VP |
1374 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1375 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1376 | { | |
1377 | CORE_ADDR addr; | |
1378 | int len, type; | |
1379 | struct bp_location *loc, **tmp; | |
1380 | ||
42ae5230 | 1381 | addr = value_address (v); |
a5606eee VP |
1382 | len = TYPE_LENGTH (value_type (v)); |
1383 | type = hw_write; | |
1384 | if (b->type == bp_read_watchpoint) | |
1385 | type = hw_read; | |
1386 | else if (b->type == bp_access_watchpoint) | |
1387 | type = hw_access; | |
1388 | ||
39d61571 | 1389 | loc = allocate_bp_location (b); |
a5606eee VP |
1390 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1391 | ; | |
1392 | *tmp = loc; | |
a6d9a66e | 1393 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1394 | |
1395 | loc->pspace = frame_pspace; | |
a5606eee VP |
1396 | loc->address = addr; |
1397 | loc->length = len; | |
1398 | loc->watchpoint_type = type; | |
1399 | } | |
1400 | } | |
9fa40276 TJB |
1401 | } |
1402 | ||
1403 | /* Change the type of breakpoint between hardware assisted or | |
1404 | an ordinary watchpoint depending on the hardware support | |
1405 | and free hardware slots. REPARSE is set when the inferior | |
1406 | is started. */ | |
a9634178 | 1407 | if (reparse) |
9fa40276 | 1408 | { |
e09342b5 | 1409 | int reg_cnt; |
9fa40276 TJB |
1410 | enum bp_loc_type loc_type; |
1411 | struct bp_location *bl; | |
a5606eee | 1412 | |
a9634178 | 1413 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1414 | |
1415 | if (reg_cnt) | |
9fa40276 TJB |
1416 | { |
1417 | int i, target_resources_ok, other_type_used; | |
1418 | ||
a9634178 TJB |
1419 | /* Use an exact watchpoint when there's only one memory region to be |
1420 | watched, and only one debug register is needed to watch it. */ | |
1421 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1422 | ||
9fa40276 | 1423 | /* We need to determine how many resources are already |
e09342b5 TJB |
1424 | used for all other hardware watchpoints plus this one |
1425 | to see if we still have enough resources to also fit | |
1426 | this watchpoint in as well. To guarantee the | |
1427 | hw_watchpoint_used_count call below counts this | |
1428 | watchpoint, make sure that it is marked as a hardware | |
1429 | watchpoint. */ | |
a9634178 TJB |
1430 | if (b->type == bp_watchpoint) |
1431 | b->type = bp_hardware_watchpoint; | |
9fa40276 | 1432 | |
a9634178 | 1433 | i = hw_watchpoint_used_count (b->type, &other_type_used); |
e09342b5 | 1434 | target_resources_ok = target_can_use_hardware_watchpoint |
a9634178 | 1435 | (b->type, i, other_type_used); |
e09342b5 | 1436 | if (target_resources_ok <= 0) |
a9634178 TJB |
1437 | { |
1438 | if (target_resources_ok == 0 | |
1439 | && b->type != bp_hardware_watchpoint) | |
1440 | error (_("Target does not support this type of " | |
1441 | "hardware watchpoint.")); | |
1442 | else if (target_resources_ok < 0 | |
1443 | && b->type != bp_hardware_watchpoint) | |
1444 | error (_("Target can only support one kind " | |
1445 | "of HW watchpoint at a time.")); | |
1446 | else | |
1447 | b->type = bp_watchpoint; | |
1448 | } | |
9fa40276 | 1449 | } |
a9634178 TJB |
1450 | else if (b->type != bp_hardware_watchpoint) |
1451 | error (_("Expression cannot be implemented with " | |
1452 | "read/access watchpoint.")); | |
9fa40276 TJB |
1453 | else |
1454 | b->type = bp_watchpoint; | |
1455 | ||
1456 | loc_type = (b->type == bp_watchpoint? bp_loc_other | |
1457 | : bp_loc_hardware_watchpoint); | |
1458 | for (bl = b->loc; bl; bl = bl->next) | |
1459 | bl->loc_type = loc_type; | |
1460 | } | |
1461 | ||
1462 | for (v = val_chain; v; v = next) | |
1463 | { | |
a5606eee VP |
1464 | next = value_next (v); |
1465 | if (v != b->val) | |
1466 | value_free (v); | |
1467 | } | |
1468 | ||
c7437ca6 PA |
1469 | /* If a software watchpoint is not watching any memory, then the |
1470 | above left it without any location set up. But, | |
1471 | bpstat_stop_status requires a location to be able to report | |
1472 | stops, so make sure there's at least a dummy one. */ | |
1473 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1474 | { | |
1475 | b->loc = allocate_bp_location (b); | |
1476 | b->loc->pspace = frame_pspace; | |
1477 | b->loc->address = -1; | |
1478 | b->loc->length = -1; | |
1479 | b->loc->watchpoint_type = -1; | |
1480 | } | |
a5606eee VP |
1481 | } |
1482 | else if (!within_current_scope) | |
7270d8f2 | 1483 | { |
ac74f770 MS |
1484 | printf_filtered (_("\ |
1485 | Watchpoint %d deleted because the program has left the block\n\ | |
1486 | in which its expression is valid.\n"), | |
a5606eee | 1487 | b->number); |
d0fb5eae | 1488 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1489 | } |
a5606eee VP |
1490 | |
1491 | /* Restore the selected frame. */ | |
66076460 DJ |
1492 | if (frame_saved) |
1493 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1494 | } |
1495 | ||
a5606eee | 1496 | |
74960c60 VP |
1497 | /* Returns 1 iff breakpoint location should be |
1498 | inserted in the inferior. */ | |
1499 | static int | |
35df4500 | 1500 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1501 | { |
35df4500 | 1502 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1503 | return 0; |
1504 | ||
35df4500 | 1505 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1506 | return 0; |
1507 | ||
35df4500 | 1508 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1509 | return 0; |
1510 | ||
56710373 PA |
1511 | /* This is set for example, when we're attached to the parent of a |
1512 | vfork, and have detached from the child. The child is running | |
1513 | free, and we expect it to do an exec or exit, at which point the | |
1514 | OS makes the parent schedulable again (and the target reports | |
1515 | that the vfork is done). Until the child is done with the shared | |
1516 | memory region, do not insert breakpoints in the parent, otherwise | |
1517 | the child could still trip on the parent's breakpoints. Since | |
1518 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1519 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1520 | return 0; |
1521 | ||
1042e4c0 SS |
1522 | /* Tracepoints are inserted by the target at a time of its choosing, |
1523 | not by us. */ | |
35df4500 | 1524 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1525 | return 0; |
1526 | ||
74960c60 VP |
1527 | return 1; |
1528 | } | |
1529 | ||
35df4500 TJB |
1530 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1531 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1532 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1533 | |
4a64f543 MS |
1534 | NOTE drow/2003-09-09: This routine could be broken down to an |
1535 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1536 | static int |
35df4500 | 1537 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1538 | struct ui_file *tmp_error_stream, |
fa3a767f | 1539 | int *disabled_breaks, |
26bb91f3 | 1540 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1541 | { |
1542 | int val = 0; | |
1543 | ||
35df4500 | 1544 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1545 | return 0; |
1546 | ||
8181d85f | 1547 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1548 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1549 | bl->target_info.placed_address = bl->address; | |
1550 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1551 | bl->target_info.length = bl->length; |
8181d85f | 1552 | |
35df4500 TJB |
1553 | if (bl->loc_type == bp_loc_software_breakpoint |
1554 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1555 | { |
35df4500 | 1556 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1557 | { |
1558 | /* If the explicitly specified breakpoint type | |
1559 | is not hardware breakpoint, check the memory map to see | |
1560 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1561 | |
765dc015 VP |
1562 | Two important cases are: |
1563 | - location type is not hardware breakpoint, memory | |
1564 | is readonly. We change the type of the location to | |
1565 | hardware breakpoint. | |
4a64f543 MS |
1566 | - location type is hardware breakpoint, memory is |
1567 | read-write. This means we've previously made the | |
1568 | location hardware one, but then the memory map changed, | |
1569 | so we undo. | |
765dc015 | 1570 | |
4a64f543 MS |
1571 | When breakpoints are removed, remove_breakpoints will use |
1572 | location types we've just set here, the only possible | |
1573 | problem is that memory map has changed during running | |
1574 | program, but it's not going to work anyway with current | |
1575 | gdb. */ | |
765dc015 | 1576 | struct mem_region *mr |
35df4500 | 1577 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1578 | |
1579 | if (mr) | |
1580 | { | |
1581 | if (automatic_hardware_breakpoints) | |
1582 | { | |
765dc015 VP |
1583 | enum bp_loc_type new_type; |
1584 | ||
1585 | if (mr->attrib.mode != MEM_RW) | |
1586 | new_type = bp_loc_hardware_breakpoint; | |
1587 | else | |
1588 | new_type = bp_loc_software_breakpoint; | |
1589 | ||
35df4500 | 1590 | if (new_type != bl->loc_type) |
765dc015 VP |
1591 | { |
1592 | static int said = 0; | |
cc59ec59 | 1593 | |
35df4500 | 1594 | bl->loc_type = new_type; |
765dc015 VP |
1595 | if (!said) |
1596 | { | |
3e43a32a MS |
1597 | fprintf_filtered (gdb_stdout, |
1598 | _("Note: automatically using " | |
1599 | "hardware breakpoints for " | |
1600 | "read-only addresses.\n")); | |
765dc015 VP |
1601 | said = 1; |
1602 | } | |
1603 | } | |
1604 | } | |
35df4500 | 1605 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1606 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1607 | warning (_("cannot set software breakpoint " |
1608 | "at readonly address %s"), | |
35df4500 | 1609 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1610 | } |
1611 | } | |
1612 | ||
879bfdc2 DJ |
1613 | /* First check to see if we have to handle an overlay. */ |
1614 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1615 | || bl->section == NULL |
1616 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1617 | { |
1618 | /* No overlay handling: just set the breakpoint. */ | |
1619 | ||
35df4500 TJB |
1620 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1621 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1622 | &bl->target_info); | |
879bfdc2 | 1623 | else |
35df4500 TJB |
1624 | val = target_insert_breakpoint (bl->gdbarch, |
1625 | &bl->target_info); | |
879bfdc2 DJ |
1626 | } |
1627 | else | |
1628 | { | |
4a64f543 | 1629 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1630 | Shall we set a breakpoint at the LMA? */ |
1631 | if (!overlay_events_enabled) | |
1632 | { | |
1633 | /* Yes -- overlay event support is not active, | |
1634 | so we must try to set a breakpoint at the LMA. | |
1635 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1636 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1637 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1638 | bl->owner->number); |
879bfdc2 DJ |
1639 | else |
1640 | { | |
35df4500 TJB |
1641 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1642 | bl->section); | |
879bfdc2 | 1643 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1644 | bl->overlay_target_info = bl->target_info; |
1645 | bl->overlay_target_info.placed_address = addr; | |
1646 | val = target_insert_breakpoint (bl->gdbarch, | |
1647 | &bl->overlay_target_info); | |
879bfdc2 | 1648 | if (val != 0) |
99361f52 | 1649 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1650 | "Overlay breakpoint %d " |
1651 | "failed: in ROM?\n", | |
35df4500 | 1652 | bl->owner->number); |
879bfdc2 DJ |
1653 | } |
1654 | } | |
1655 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1656 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1657 | { |
1658 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1659 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1660 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1661 | &bl->target_info); | |
879bfdc2 | 1662 | else |
35df4500 TJB |
1663 | val = target_insert_breakpoint (bl->gdbarch, |
1664 | &bl->target_info); | |
879bfdc2 DJ |
1665 | } |
1666 | else | |
1667 | { | |
1668 | /* No. This breakpoint will not be inserted. | |
1669 | No error, but do not mark the bp as 'inserted'. */ | |
1670 | return 0; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | if (val) | |
1675 | { | |
1676 | /* Can't set the breakpoint. */ | |
35df4500 | 1677 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1678 | { |
4a64f543 | 1679 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1680 | val = 0; |
35df4500 | 1681 | bl->shlib_disabled = 1; |
8d3788bd | 1682 | observer_notify_breakpoint_modified (bl->owner); |
879bfdc2 DJ |
1683 | if (!*disabled_breaks) |
1684 | { | |
1685 | fprintf_unfiltered (tmp_error_stream, | |
1686 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1687 | bl->owner->number); |
879bfdc2 | 1688 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1689 | "Temporarily disabling shared " |
1690 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1691 | } |
1692 | *disabled_breaks = 1; | |
1693 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1694 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1695 | } |
1696 | else | |
879bfdc2 | 1697 | { |
35df4500 | 1698 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1699 | { |
1700 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1701 | fprintf_unfiltered (tmp_error_stream, |
1702 | "Cannot insert hardware " | |
1703 | "breakpoint %d.\n", | |
35df4500 | 1704 | bl->owner->number); |
879bfdc2 DJ |
1705 | } |
1706 | else | |
1707 | { | |
1708 | fprintf_unfiltered (tmp_error_stream, | |
1709 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1710 | bl->owner->number); |
879bfdc2 DJ |
1711 | fprintf_filtered (tmp_error_stream, |
1712 | "Error accessing memory address "); | |
35df4500 | 1713 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1714 | tmp_error_stream); |
879bfdc2 DJ |
1715 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1716 | safe_strerror (val)); | |
1717 | } | |
1718 | ||
1719 | } | |
1720 | } | |
1721 | else | |
35df4500 | 1722 | bl->inserted = 1; |
879bfdc2 DJ |
1723 | |
1724 | return val; | |
1725 | } | |
1726 | ||
35df4500 | 1727 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1728 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1729 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1730 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1731 | { |
77b06cd7 TJB |
1732 | gdb_assert (bl->owner->ops != NULL |
1733 | && bl->owner->ops->insert_location != NULL); | |
1734 | ||
1735 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1736 | |
1737 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1738 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1739 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1740 | { |
1741 | struct bp_location *loc, **loc_temp; | |
1742 | ||
1743 | /* But don't try to insert it, if there's already another | |
1744 | hw_access location that would be considered a duplicate | |
1745 | of this one. */ | |
1746 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1747 | if (loc != bl |
85d721b8 | 1748 | && loc->watchpoint_type == hw_access |
35df4500 | 1749 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1750 | { |
35df4500 TJB |
1751 | bl->duplicate = 1; |
1752 | bl->inserted = 1; | |
1753 | bl->target_info = loc->target_info; | |
1754 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1755 | val = 0; |
1756 | break; | |
1757 | } | |
1758 | ||
1759 | if (val == 1) | |
1760 | { | |
77b06cd7 TJB |
1761 | bl->watchpoint_type = hw_access; |
1762 | val = bl->owner->ops->insert_location (bl); | |
1763 | ||
1764 | if (val) | |
1765 | /* Back to the original value. */ | |
1766 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1767 | } |
1768 | } | |
1769 | ||
35df4500 | 1770 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1771 | } |
1772 | ||
35df4500 | 1773 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1774 | { |
77b06cd7 TJB |
1775 | gdb_assert (bl->owner->ops != NULL |
1776 | && bl->owner->ops->insert_location != NULL); | |
1777 | ||
1778 | val = bl->owner->ops->insert_location (bl); | |
1779 | if (val) | |
1780 | { | |
1781 | bl->owner->enable_state = bp_disabled; | |
1782 | ||
1783 | if (val == 1) | |
1784 | warning (_("\ | |
1785 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1786 | of catchpoint."), bl->owner->number); | |
1787 | else | |
1788 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1789 | } | |
1790 | ||
1791 | bl->inserted = (val == 0); | |
1640b821 DJ |
1792 | |
1793 | /* We've already printed an error message if there was a problem | |
1794 | inserting this catchpoint, and we've disabled the catchpoint, | |
1795 | so just return success. */ | |
1796 | return 0; | |
879bfdc2 DJ |
1797 | } |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
6c95b8df PA |
1802 | /* This function is called when program space PSPACE is about to be |
1803 | deleted. It takes care of updating breakpoints to not reference | |
1804 | PSPACE anymore. */ | |
1805 | ||
1806 | void | |
1807 | breakpoint_program_space_exit (struct program_space *pspace) | |
1808 | { | |
1809 | struct breakpoint *b, *b_temp; | |
876fa593 | 1810 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1811 | |
1812 | /* Remove any breakpoint that was set through this program space. */ | |
1813 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1814 | { | |
1815 | if (b->pspace == pspace) | |
1816 | delete_breakpoint (b); | |
1817 | } | |
1818 | ||
1819 | /* Breakpoints set through other program spaces could have locations | |
1820 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1821 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1822 | { |
1823 | struct bp_location *tmp; | |
1824 | ||
1825 | if (loc->pspace == pspace) | |
1826 | { | |
2bdf28a0 | 1827 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1828 | if (loc->owner->loc == loc) |
1829 | loc->owner->loc = loc->next; | |
1830 | else | |
1831 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1832 | if (tmp->next == loc) | |
1833 | { | |
1834 | tmp->next = loc->next; | |
1835 | break; | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | /* Now update the global location list to permanently delete the | |
1841 | removed locations above. */ | |
1842 | update_global_location_list (0); | |
1843 | } | |
1844 | ||
74960c60 VP |
1845 | /* Make sure all breakpoints are inserted in inferior. |
1846 | Throws exception on any error. | |
1847 | A breakpoint that is already inserted won't be inserted | |
1848 | again, so calling this function twice is safe. */ | |
1849 | void | |
1850 | insert_breakpoints (void) | |
1851 | { | |
1852 | struct breakpoint *bpt; | |
1853 | ||
1854 | ALL_BREAKPOINTS (bpt) | |
1855 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1856 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1857 | |
b60e7edf | 1858 | update_global_location_list (1); |
74960c60 | 1859 | |
c35b1492 PA |
1860 | /* update_global_location_list does not insert breakpoints when |
1861 | always_inserted_mode is not enabled. Explicitly insert them | |
1862 | now. */ | |
1863 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1864 | insert_breakpoint_locations (); |
1865 | } | |
1866 | ||
c906108c SS |
1867 | /* insert_breakpoints is used when starting or continuing the program. |
1868 | remove_breakpoints is used when the program stops. | |
1869 | Both return zero if successful, | |
1870 | or an `errno' value if could not write the inferior. */ | |
1871 | ||
74960c60 VP |
1872 | static void |
1873 | insert_breakpoint_locations (void) | |
c906108c | 1874 | { |
a5606eee | 1875 | struct breakpoint *bpt; |
35df4500 | 1876 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1877 | int error = 0; |
c906108c SS |
1878 | int val = 0; |
1879 | int disabled_breaks = 0; | |
81d0cc19 | 1880 | int hw_breakpoint_error = 0; |
c906108c | 1881 | |
81d0cc19 | 1882 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1883 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1884 | |
81d0cc19 GS |
1885 | /* Explicitly mark the warning -- this will only be printed if |
1886 | there was an error. */ | |
1887 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1888 | |
1889 | save_current_space_and_thread (); | |
1890 | ||
35df4500 | 1891 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1892 | { |
35df4500 | 1893 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1894 | continue; |
1895 | ||
4a64f543 MS |
1896 | /* There is no point inserting thread-specific breakpoints if |
1897 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1898 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1899 | if (bl->owner->thread != -1 |
1900 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1901 | continue; |
1902 | ||
35df4500 | 1903 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1904 | |
1905 | /* For targets that support global breakpoints, there's no need | |
1906 | to select an inferior to insert breakpoint to. In fact, even | |
1907 | if we aren't attached to any process yet, we should still | |
1908 | insert breakpoints. */ | |
1909 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1910 | && ptid_equal (inferior_ptid, null_ptid)) | |
1911 | continue; | |
1912 | ||
35df4500 | 1913 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1914 | &hw_breakpoint_error); |
1915 | if (val) | |
e236ba44 | 1916 | error = val; |
879bfdc2 | 1917 | } |
c906108c | 1918 | |
4a64f543 MS |
1919 | /* If we failed to insert all locations of a watchpoint, remove |
1920 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1921 | ALL_BREAKPOINTS (bpt) |
1922 | { | |
1923 | int some_failed = 0; | |
1924 | struct bp_location *loc; | |
1925 | ||
1926 | if (!is_hardware_watchpoint (bpt)) | |
1927 | continue; | |
1928 | ||
d6b74ac4 | 1929 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1930 | continue; |
74960c60 VP |
1931 | |
1932 | if (bpt->disposition == disp_del_at_next_stop) | |
1933 | continue; | |
a5606eee VP |
1934 | |
1935 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1936 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1937 | { |
1938 | some_failed = 1; | |
1939 | break; | |
1940 | } | |
1941 | if (some_failed) | |
1942 | { | |
1943 | for (loc = bpt->loc; loc; loc = loc->next) | |
1944 | if (loc->inserted) | |
1945 | remove_breakpoint (loc, mark_uninserted); | |
1946 | ||
1947 | hw_breakpoint_error = 1; | |
1948 | fprintf_unfiltered (tmp_error_stream, | |
1949 | "Could not insert hardware watchpoint %d.\n", | |
1950 | bpt->number); | |
1951 | error = -1; | |
1952 | } | |
1953 | } | |
1954 | ||
e236ba44 | 1955 | if (error) |
81d0cc19 GS |
1956 | { |
1957 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1958 | message about possibly exhausted resources. */ | |
879bfdc2 | 1959 | if (hw_breakpoint_error) |
81d0cc19 | 1960 | { |
c6510018 MS |
1961 | fprintf_unfiltered (tmp_error_stream, |
1962 | "Could not insert hardware breakpoints:\n\ | |
1963 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1964 | } |
81d0cc19 GS |
1965 | target_terminal_ours_for_output (); |
1966 | error_stream (tmp_error_stream); | |
1967 | } | |
f7545552 TT |
1968 | |
1969 | do_cleanups (cleanups); | |
c906108c SS |
1970 | } |
1971 | ||
c906108c | 1972 | int |
fba45db2 | 1973 | remove_breakpoints (void) |
c906108c | 1974 | { |
35df4500 | 1975 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 1976 | int val = 0; |
c906108c | 1977 | |
35df4500 | 1978 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 1979 | { |
35df4500 TJB |
1980 | if (bl->inserted) |
1981 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 1982 | } |
3a1bae8e | 1983 | return val; |
c906108c SS |
1984 | } |
1985 | ||
6c95b8df PA |
1986 | /* Remove breakpoints of process PID. */ |
1987 | ||
1988 | int | |
1989 | remove_breakpoints_pid (int pid) | |
1990 | { | |
35df4500 | 1991 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
1992 | int val; |
1993 | struct inferior *inf = find_inferior_pid (pid); | |
1994 | ||
35df4500 | 1995 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 1996 | { |
35df4500 | 1997 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
1998 | continue; |
1999 | ||
35df4500 | 2000 | if (bl->inserted) |
6c95b8df | 2001 | { |
35df4500 | 2002 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2003 | if (val != 0) |
2004 | return val; | |
2005 | } | |
2006 | } | |
2007 | return 0; | |
2008 | } | |
2009 | ||
692590c1 | 2010 | int |
80ce1ecb | 2011 | remove_hw_watchpoints (void) |
692590c1 | 2012 | { |
35df4500 | 2013 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2014 | int val = 0; |
692590c1 | 2015 | |
35df4500 | 2016 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 2017 | { |
35df4500 TJB |
2018 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
2019 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 2020 | } |
3a1bae8e | 2021 | return val; |
692590c1 MS |
2022 | } |
2023 | ||
c906108c | 2024 | int |
fba45db2 | 2025 | reattach_breakpoints (int pid) |
c906108c | 2026 | { |
6c95b8df | 2027 | struct cleanup *old_chain; |
35df4500 | 2028 | struct bp_location *bl, **blp_tmp; |
c906108c | 2029 | int val; |
86b887df | 2030 | struct ui_file *tmp_error_stream; |
fa3a767f | 2031 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2032 | struct inferior *inf; |
2033 | struct thread_info *tp; | |
2034 | ||
2035 | tp = any_live_thread_of_process (pid); | |
2036 | if (tp == NULL) | |
2037 | return 1; | |
2038 | ||
2039 | inf = find_inferior_pid (pid); | |
2040 | old_chain = save_inferior_ptid (); | |
2041 | ||
2042 | inferior_ptid = tp->ptid; | |
a4954f26 | 2043 | |
86b887df | 2044 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2045 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2046 | |
35df4500 | 2047 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2048 | { |
35df4500 | 2049 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2050 | continue; |
2051 | ||
35df4500 | 2052 | if (bl->inserted) |
c5aa993b | 2053 | { |
35df4500 TJB |
2054 | bl->inserted = 0; |
2055 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2056 | if (val != 0) |
2057 | { | |
ce696e05 | 2058 | do_cleanups (old_chain); |
c5aa993b JM |
2059 | return val; |
2060 | } | |
2061 | } | |
2062 | } | |
ce696e05 | 2063 | do_cleanups (old_chain); |
c906108c SS |
2064 | return 0; |
2065 | } | |
2066 | ||
e58b0e63 PA |
2067 | static int internal_breakpoint_number = -1; |
2068 | ||
84f4c1fe PM |
2069 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2070 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2071 | from internal_breakpoint_number and that variable decremented. | |
2072 | Otherwis the breakpoint number will be populated from | |
2073 | breakpoint_count and that value incremented. Internal breakpoints | |
2074 | do not set the internal var bpnum. */ | |
2075 | static void | |
2076 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2077 | { | |
2078 | if (internal) | |
2079 | b->number = internal_breakpoint_number--; | |
2080 | else | |
2081 | { | |
2082 | set_breakpoint_count (breakpoint_count + 1); | |
2083 | b->number = breakpoint_count; | |
2084 | } | |
2085 | } | |
2086 | ||
e62c965a | 2087 | static struct breakpoint * |
a6d9a66e UW |
2088 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2089 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2090 | { |
e62c965a PP |
2091 | struct symtab_and_line sal; |
2092 | struct breakpoint *b; | |
2093 | ||
4a64f543 | 2094 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2095 | |
2096 | sal.pc = address; | |
2097 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2098 | sal.pspace = current_program_space; |
e62c965a | 2099 | |
a6d9a66e | 2100 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2101 | b->number = internal_breakpoint_number--; |
2102 | b->disposition = disp_donttouch; | |
2103 | ||
2104 | return b; | |
2105 | } | |
2106 | ||
17450429 PP |
2107 | static const char *const longjmp_names[] = |
2108 | { | |
2109 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2110 | }; | |
2111 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2112 | ||
2113 | /* Per-objfile data private to breakpoint.c. */ | |
2114 | struct breakpoint_objfile_data | |
2115 | { | |
2116 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2117 | struct minimal_symbol *overlay_msym; | |
2118 | ||
2119 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2120 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2121 | ||
2122 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2123 | struct minimal_symbol *terminate_msym; | |
2124 | ||
2125 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2126 | struct minimal_symbol *exception_msym; | |
2127 | }; | |
2128 | ||
2129 | static const struct objfile_data *breakpoint_objfile_key; | |
2130 | ||
2131 | /* Minimal symbol not found sentinel. */ | |
2132 | static struct minimal_symbol msym_not_found; | |
2133 | ||
2134 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2135 | ||
2136 | static int | |
2137 | msym_not_found_p (const struct minimal_symbol *msym) | |
2138 | { | |
2139 | return msym == &msym_not_found; | |
2140 | } | |
2141 | ||
2142 | /* Return per-objfile data needed by breakpoint.c. | |
2143 | Allocate the data if necessary. */ | |
2144 | ||
2145 | static struct breakpoint_objfile_data * | |
2146 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2147 | { | |
2148 | struct breakpoint_objfile_data *bp_objfile_data; | |
2149 | ||
2150 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2151 | if (bp_objfile_data == NULL) | |
2152 | { | |
2153 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2154 | sizeof (*bp_objfile_data)); | |
2155 | ||
2156 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2157 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2158 | } | |
2159 | return bp_objfile_data; | |
2160 | } | |
2161 | ||
e62c965a | 2162 | static void |
af02033e | 2163 | create_overlay_event_breakpoint (void) |
e62c965a | 2164 | { |
69de3c6a | 2165 | struct objfile *objfile; |
af02033e | 2166 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2167 | |
69de3c6a PP |
2168 | ALL_OBJFILES (objfile) |
2169 | { | |
2170 | struct breakpoint *b; | |
17450429 PP |
2171 | struct breakpoint_objfile_data *bp_objfile_data; |
2172 | CORE_ADDR addr; | |
69de3c6a | 2173 | |
17450429 PP |
2174 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2175 | ||
2176 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2177 | continue; | |
2178 | ||
2179 | if (bp_objfile_data->overlay_msym == NULL) | |
2180 | { | |
2181 | struct minimal_symbol *m; | |
2182 | ||
2183 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2184 | if (m == NULL) | |
2185 | { | |
2186 | /* Avoid future lookups in this objfile. */ | |
2187 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2188 | continue; | |
2189 | } | |
2190 | bp_objfile_data->overlay_msym = m; | |
2191 | } | |
e62c965a | 2192 | |
17450429 PP |
2193 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2194 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
69de3c6a PP |
2195 | bp_overlay_event); |
2196 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2197 | |
69de3c6a PP |
2198 | if (overlay_debugging == ovly_auto) |
2199 | { | |
2200 | b->enable_state = bp_enabled; | |
2201 | overlay_events_enabled = 1; | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | b->enable_state = bp_disabled; | |
2206 | overlay_events_enabled = 0; | |
2207 | } | |
e62c965a PP |
2208 | } |
2209 | update_global_location_list (1); | |
2210 | } | |
2211 | ||
0fd8e87f | 2212 | static void |
af02033e | 2213 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2214 | { |
6c95b8df | 2215 | struct program_space *pspace; |
6c95b8df PA |
2216 | struct cleanup *old_chain; |
2217 | ||
2218 | old_chain = save_current_program_space (); | |
0fd8e87f | 2219 | |
6c95b8df | 2220 | ALL_PSPACES (pspace) |
af02033e PP |
2221 | { |
2222 | struct objfile *objfile; | |
2223 | ||
2224 | set_current_program_space (pspace); | |
2225 | ||
2226 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2227 | { |
af02033e PP |
2228 | int i; |
2229 | struct gdbarch *gdbarch; | |
17450429 | 2230 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2231 | |
af02033e PP |
2232 | gdbarch = get_objfile_arch (objfile); |
2233 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2234 | continue; |
2235 | ||
17450429 PP |
2236 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2237 | ||
2238 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2239 | { |
2240 | struct breakpoint *b; | |
af02033e | 2241 | const char *func_name; |
17450429 | 2242 | CORE_ADDR addr; |
6c95b8df | 2243 | |
17450429 | 2244 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2245 | continue; |
0fd8e87f | 2246 | |
17450429 PP |
2247 | func_name = longjmp_names[i]; |
2248 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2249 | { | |
2250 | struct minimal_symbol *m; | |
2251 | ||
2252 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2253 | if (m == NULL) | |
2254 | { | |
2255 | /* Prevent future lookups in this objfile. */ | |
2256 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2257 | continue; | |
2258 | } | |
2259 | bp_objfile_data->longjmp_msym[i] = m; | |
2260 | } | |
2261 | ||
2262 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
2263 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); | |
af02033e PP |
2264 | b->addr_string = xstrdup (func_name); |
2265 | b->enable_state = bp_disabled; | |
2266 | } | |
0fd8e87f | 2267 | } |
af02033e | 2268 | } |
0fd8e87f | 2269 | update_global_location_list (1); |
6c95b8df PA |
2270 | |
2271 | do_cleanups (old_chain); | |
0fd8e87f UW |
2272 | } |
2273 | ||
af02033e | 2274 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2275 | static void |
af02033e | 2276 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2277 | { |
2278 | struct program_space *pspace; | |
aa7d318d | 2279 | struct cleanup *old_chain; |
af02033e | 2280 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2281 | |
2282 | old_chain = save_current_program_space (); | |
2283 | ||
2284 | ALL_PSPACES (pspace) | |
17450429 PP |
2285 | { |
2286 | struct objfile *objfile; | |
2287 | CORE_ADDR addr; | |
2288 | ||
2289 | set_current_program_space (pspace); | |
2290 | ||
aa7d318d TT |
2291 | ALL_OBJFILES (objfile) |
2292 | { | |
2293 | struct breakpoint *b; | |
17450429 | 2294 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2295 | |
17450429 | 2296 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2297 | |
17450429 PP |
2298 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2299 | continue; | |
2300 | ||
2301 | if (bp_objfile_data->terminate_msym == NULL) | |
2302 | { | |
2303 | struct minimal_symbol *m; | |
2304 | ||
2305 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2306 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2307 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2308 | { | |
2309 | /* Prevent future lookups in this objfile. */ | |
2310 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2311 | continue; | |
2312 | } | |
2313 | bp_objfile_data->terminate_msym = m; | |
2314 | } | |
aa7d318d | 2315 | |
17450429 PP |
2316 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2317 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
aa7d318d TT |
2318 | bp_std_terminate_master); |
2319 | b->addr_string = xstrdup (func_name); | |
2320 | b->enable_state = bp_disabled; | |
2321 | } | |
17450429 PP |
2322 | } |
2323 | ||
aa7d318d TT |
2324 | update_global_location_list (1); |
2325 | ||
2326 | do_cleanups (old_chain); | |
2327 | } | |
2328 | ||
186c406b TT |
2329 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2330 | ||
2331 | void | |
2332 | create_exception_master_breakpoint (void) | |
2333 | { | |
2334 | struct objfile *objfile; | |
17450429 | 2335 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2336 | |
2337 | ALL_OBJFILES (objfile) | |
2338 | { | |
17450429 PP |
2339 | struct breakpoint *b; |
2340 | struct gdbarch *gdbarch; | |
2341 | struct breakpoint_objfile_data *bp_objfile_data; | |
2342 | CORE_ADDR addr; | |
2343 | ||
2344 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2345 | ||
2346 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2347 | continue; | |
2348 | ||
2349 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2350 | |
17450429 | 2351 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2352 | { |
17450429 | 2353 | struct minimal_symbol *debug_hook; |
186c406b | 2354 | |
17450429 PP |
2355 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2356 | if (debug_hook == NULL) | |
2357 | { | |
2358 | bp_objfile_data->exception_msym = &msym_not_found; | |
2359 | continue; | |
2360 | } | |
2361 | ||
2362 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2363 | } |
17450429 PP |
2364 | |
2365 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2366 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2367 | ¤t_target); | |
2368 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2369 | b->addr_string = xstrdup (func_name); | |
2370 | b->enable_state = bp_disabled; | |
186c406b TT |
2371 | } |
2372 | ||
2373 | update_global_location_list (1); | |
2374 | } | |
2375 | ||
c906108c | 2376 | void |
fba45db2 | 2377 | update_breakpoints_after_exec (void) |
c906108c | 2378 | { |
35df4500 | 2379 | struct breakpoint *b, *b_tmp; |
876fa593 | 2380 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2381 | |
25b22b0a PA |
2382 | /* We're about to delete breakpoints from GDB's lists. If the |
2383 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2384 | writing the breakpoints' "shadow contents" back into memory. The | |
2385 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2386 | do that. Instead, the target is responsible from marking | |
2387 | breakpoints out as soon as it detects an exec. We don't do that | |
2388 | here instead, because there may be other attempts to delete | |
2389 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2390 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2391 | if (bploc->pspace == current_program_space) |
2392 | gdb_assert (!bploc->inserted); | |
c906108c | 2393 | |
35df4500 | 2394 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2395 | { |
6c95b8df PA |
2396 | if (b->pspace != current_program_space) |
2397 | continue; | |
2398 | ||
4a64f543 | 2399 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2400 | if (b->type == bp_shlib_event) |
2401 | { | |
2402 | delete_breakpoint (b); | |
2403 | continue; | |
2404 | } | |
c906108c | 2405 | |
4a64f543 | 2406 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2407 | if (b->type == bp_jit_event) |
2408 | { | |
2409 | delete_breakpoint (b); | |
2410 | continue; | |
2411 | } | |
2412 | ||
1900040c | 2413 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2414 | as must overlay event and longjmp master breakpoints. */ |
2415 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2416 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2417 | || b->type == bp_exception_master) | |
c4093a6a JM |
2418 | { |
2419 | delete_breakpoint (b); | |
2420 | continue; | |
2421 | } | |
2422 | ||
4a64f543 | 2423 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2424 | if (b->type == bp_step_resume) |
2425 | { | |
2426 | delete_breakpoint (b); | |
2427 | continue; | |
2428 | } | |
2429 | ||
611c83ae PA |
2430 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2431 | after an exec. */ | |
186c406b TT |
2432 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2433 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2434 | { |
2435 | delete_breakpoint (b); | |
2436 | continue; | |
2437 | } | |
2438 | ||
ce78b96d JB |
2439 | if (b->type == bp_catchpoint) |
2440 | { | |
2441 | /* For now, none of the bp_catchpoint breakpoints need to | |
2442 | do anything at this point. In the future, if some of | |
2443 | the catchpoints need to something, we will need to add | |
2444 | a new method, and call this method from here. */ | |
2445 | continue; | |
2446 | } | |
2447 | ||
c5aa993b JM |
2448 | /* bp_finish is a special case. The only way we ought to be able |
2449 | to see one of these when an exec() has happened, is if the user | |
2450 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2451 | carries them to the call-site of the current callee, by setting | |
2452 | a temporary bp there and resuming. But in this case, the finish | |
2453 | will carry them entirely through the vfork & exec. | |
2454 | ||
2455 | We don't want to allow a bp_finish to remain inserted now. But | |
2456 | we can't safely delete it, 'cause finish_command has a handle to | |
2457 | the bp on a bpstat, and will later want to delete it. There's a | |
2458 | chance (and I've seen it happen) that if we delete the bp_finish | |
2459 | here, that its storage will get reused by the time finish_command | |
2460 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2461 | We really must allow finish_command to delete a bp_finish. | |
2462 | ||
53a5351d JM |
2463 | In the absense of a general solution for the "how do we know |
2464 | it's safe to delete something others may have handles to?" | |
2465 | problem, what we'll do here is just uninsert the bp_finish, and | |
2466 | let finish_command delete it. | |
2467 | ||
2468 | (We know the bp_finish is "doomed" in the sense that it's | |
2469 | momentary, and will be deleted as soon as finish_command sees | |
2470 | the inferior stopped. So it doesn't matter that the bp's | |
2471 | address is probably bogus in the new a.out, unlike e.g., the | |
2472 | solib breakpoints.) */ | |
c5aa993b | 2473 | |
c5aa993b JM |
2474 | if (b->type == bp_finish) |
2475 | { | |
2476 | continue; | |
2477 | } | |
2478 | ||
2479 | /* Without a symbolic address, we have little hope of the | |
2480 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2481 | a.out. */ |
c5aa993b JM |
2482 | if (b->addr_string == NULL) |
2483 | { | |
2484 | delete_breakpoint (b); | |
2485 | continue; | |
2486 | } | |
c5aa993b | 2487 | } |
1900040c | 2488 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2489 | create_overlay_event_breakpoint (); |
2490 | create_longjmp_master_breakpoint (); | |
2491 | create_std_terminate_master_breakpoint (); | |
186c406b | 2492 | create_exception_master_breakpoint (); |
c906108c SS |
2493 | } |
2494 | ||
2495 | int | |
fba45db2 | 2496 | detach_breakpoints (int pid) |
c906108c | 2497 | { |
35df4500 | 2498 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2499 | int val = 0; |
ce696e05 | 2500 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2501 | struct inferior *inf = current_inferior (); |
c5aa993b | 2502 | |
39f77062 | 2503 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2504 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2505 | |
6c95b8df | 2506 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2507 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2508 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2509 | { |
35df4500 | 2510 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2511 | continue; |
2512 | ||
35df4500 TJB |
2513 | if (bl->inserted) |
2514 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2515 | } |
d03285ec UW |
2516 | |
2517 | /* Detach single-step breakpoints as well. */ | |
2518 | detach_single_step_breakpoints (); | |
2519 | ||
ce696e05 | 2520 | do_cleanups (old_chain); |
3a1bae8e | 2521 | return val; |
c906108c SS |
2522 | } |
2523 | ||
35df4500 | 2524 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2525 | Note that this is used to detach breakpoints from a child fork. |
2526 | When we get here, the child isn't in the inferior list, and neither | |
2527 | do we have objects to represent its address space --- we should | |
35df4500 | 2528 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2529 | |
c906108c | 2530 | static int |
35df4500 | 2531 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2532 | { |
2533 | int val; | |
c5aa993b | 2534 | |
35df4500 TJB |
2535 | /* BL is never in moribund_locations by our callers. */ |
2536 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2537 | |
35df4500 | 2538 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2539 | /* Permanent breakpoints cannot be inserted or removed. */ |
2540 | return 0; | |
2541 | ||
74960c60 VP |
2542 | /* The type of none suggests that owner is actually deleted. |
2543 | This should not ever happen. */ | |
35df4500 | 2544 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2545 | |
35df4500 TJB |
2546 | if (bl->loc_type == bp_loc_software_breakpoint |
2547 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2548 | { |
c02f5703 MS |
2549 | /* "Normal" instruction breakpoint: either the standard |
2550 | trap-instruction bp (bp_breakpoint), or a | |
2551 | bp_hardware_breakpoint. */ | |
2552 | ||
2553 | /* First check to see if we have to handle an overlay. */ | |
2554 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2555 | || bl->section == NULL |
2556 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2557 | { |
2558 | /* No overlay handling: just remove the breakpoint. */ | |
2559 | ||
35df4500 TJB |
2560 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2561 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2562 | else |
35df4500 | 2563 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2564 | } |
c906108c SS |
2565 | else |
2566 | { | |
4a64f543 | 2567 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2568 | Did we set a breakpoint at the LMA? */ |
2569 | if (!overlay_events_enabled) | |
2570 | { | |
2571 | /* Yes -- overlay event support is not active, so we | |
2572 | should have set a breakpoint at the LMA. Remove it. | |
2573 | */ | |
c02f5703 MS |
2574 | /* Ignore any failures: if the LMA is in ROM, we will |
2575 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2576 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2577 | target_remove_hw_breakpoint (bl->gdbarch, | |
2578 | &bl->overlay_target_info); | |
c02f5703 | 2579 | else |
35df4500 TJB |
2580 | target_remove_breakpoint (bl->gdbarch, |
2581 | &bl->overlay_target_info); | |
c02f5703 MS |
2582 | } |
2583 | /* Did we set a breakpoint at the VMA? | |
2584 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2585 | if (bl->inserted) |
c906108c | 2586 | { |
c02f5703 MS |
2587 | /* Yes -- remove it. Previously we did not bother to |
2588 | remove the breakpoint if the section had been | |
2589 | unmapped, but let's not rely on that being safe. We | |
2590 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2591 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2592 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2593 | &bl->target_info); | |
aa67235e UW |
2594 | |
2595 | /* However, we should remove *software* breakpoints only | |
2596 | if the section is still mapped, or else we overwrite | |
2597 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2598 | else if (section_is_mapped (bl->section)) |
2599 | val = target_remove_breakpoint (bl->gdbarch, | |
2600 | &bl->target_info); | |
aa67235e UW |
2601 | else |
2602 | val = 0; | |
c906108c | 2603 | } |
c02f5703 MS |
2604 | else |
2605 | { | |
2606 | /* No -- not inserted, so no need to remove. No error. */ | |
2607 | val = 0; | |
2608 | } | |
c906108c | 2609 | } |
879d1e6b UW |
2610 | |
2611 | /* In some cases, we might not be able to remove a breakpoint | |
2612 | in a shared library that has already been removed, but we | |
2613 | have not yet processed the shlib unload event. */ | |
35df4500 | 2614 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2615 | val = 0; |
2616 | ||
c906108c SS |
2617 | if (val) |
2618 | return val; | |
35df4500 | 2619 | bl->inserted = (is == mark_inserted); |
c906108c | 2620 | } |
35df4500 | 2621 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2622 | { |
77b06cd7 TJB |
2623 | gdb_assert (bl->owner->ops != NULL |
2624 | && bl->owner->ops->remove_location != NULL); | |
2625 | ||
35df4500 | 2626 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2627 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2628 | |
c906108c | 2629 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2630 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2631 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2632 | bl->owner->number); |
c906108c | 2633 | } |
35df4500 TJB |
2634 | else if (bl->owner->type == bp_catchpoint |
2635 | && breakpoint_enabled (bl->owner) | |
2636 | && !bl->duplicate) | |
ce78b96d | 2637 | { |
77b06cd7 TJB |
2638 | gdb_assert (bl->owner->ops != NULL |
2639 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2640 | |
77b06cd7 | 2641 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2642 | if (val) |
2643 | return val; | |
77b06cd7 | 2644 | |
35df4500 | 2645 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2646 | } |
c906108c SS |
2647 | |
2648 | return 0; | |
2649 | } | |
2650 | ||
6c95b8df | 2651 | static int |
35df4500 | 2652 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2653 | { |
2654 | int ret; | |
2655 | struct cleanup *old_chain; | |
2656 | ||
35df4500 TJB |
2657 | /* BL is never in moribund_locations by our callers. */ |
2658 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2659 | |
35df4500 | 2660 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2661 | /* Permanent breakpoints cannot be inserted or removed. */ |
2662 | return 0; | |
2663 | ||
2664 | /* The type of none suggests that owner is actually deleted. | |
2665 | This should not ever happen. */ | |
35df4500 | 2666 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2667 | |
2668 | old_chain = save_current_space_and_thread (); | |
2669 | ||
35df4500 | 2670 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2671 | |
35df4500 | 2672 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2673 | |
2674 | do_cleanups (old_chain); | |
2675 | return ret; | |
2676 | } | |
2677 | ||
c906108c SS |
2678 | /* Clear the "inserted" flag in all breakpoints. */ |
2679 | ||
25b22b0a | 2680 | void |
fba45db2 | 2681 | mark_breakpoints_out (void) |
c906108c | 2682 | { |
35df4500 | 2683 | struct bp_location *bl, **blp_tmp; |
c906108c | 2684 | |
35df4500 TJB |
2685 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2686 | if (bl->pspace == current_program_space) | |
2687 | bl->inserted = 0; | |
c906108c SS |
2688 | } |
2689 | ||
53a5351d JM |
2690 | /* Clear the "inserted" flag in all breakpoints and delete any |
2691 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2692 | |
2693 | Plus other such housekeeping that has to be done for breakpoints | |
2694 | between runs. | |
2695 | ||
53a5351d JM |
2696 | Note: this function gets called at the end of a run (by |
2697 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2698 | init_wait_for_inferior). */ |
c906108c SS |
2699 | |
2700 | ||
2701 | ||
2702 | void | |
fba45db2 | 2703 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2704 | { |
35df4500 TJB |
2705 | struct breakpoint *b, *b_tmp; |
2706 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2707 | int ix; |
6c95b8df | 2708 | struct program_space *pspace = current_program_space; |
c906108c | 2709 | |
50c71eaf PA |
2710 | /* If breakpoint locations are shared across processes, then there's |
2711 | nothing to do. */ | |
2567c7d9 | 2712 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2713 | return; |
2714 | ||
35df4500 | 2715 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2716 | { |
35df4500 TJB |
2717 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2718 | if (bl->pspace == pspace | |
2719 | && bl->owner->enable_state != bp_permanent) | |
2720 | bl->inserted = 0; | |
6c95b8df | 2721 | } |
075f6582 | 2722 | |
35df4500 | 2723 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2724 | { |
6c95b8df PA |
2725 | if (b->loc && b->loc->pspace != pspace) |
2726 | continue; | |
2727 | ||
c5aa993b JM |
2728 | switch (b->type) |
2729 | { | |
2730 | case bp_call_dummy: | |
c906108c | 2731 | |
c5aa993b | 2732 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2733 | cause problems when the inferior is rerun, so we better get |
2734 | rid of it. */ | |
2735 | ||
2736 | case bp_watchpoint_scope: | |
2737 | ||
2738 | /* Also get rid of scope breakpoints. */ | |
2739 | ||
2740 | case bp_shlib_event: | |
2741 | ||
2742 | /* Also remove solib event breakpoints. Their addresses may | |
2743 | have changed since the last time we ran the program. | |
2744 | Actually we may now be debugging against different target; | |
2745 | and so the solib backend that installed this breakpoint may | |
2746 | not be used in by the target. E.g., | |
2747 | ||
2748 | (gdb) file prog-linux | |
2749 | (gdb) run # native linux target | |
2750 | ... | |
2751 | (gdb) kill | |
2752 | (gdb) file prog-win.exe | |
2753 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2754 | */ | |
c906108c | 2755 | |
c5aa993b JM |
2756 | delete_breakpoint (b); |
2757 | break; | |
c906108c | 2758 | |
c5aa993b JM |
2759 | case bp_watchpoint: |
2760 | case bp_hardware_watchpoint: | |
2761 | case bp_read_watchpoint: | |
2762 | case bp_access_watchpoint: | |
c906108c | 2763 | |
c5aa993b JM |
2764 | /* Likewise for watchpoints on local expressions. */ |
2765 | if (b->exp_valid_block != NULL) | |
2766 | delete_breakpoint (b); | |
967af18d | 2767 | else if (context == inf_starting) |
c860120c | 2768 | { |
4a64f543 MS |
2769 | /* Reset val field to force reread of starting value in |
2770 | insert_breakpoints. */ | |
c860120c PM |
2771 | if (b->val) |
2772 | value_free (b->val); | |
2773 | b->val = NULL; | |
fa4727a6 | 2774 | b->val_valid = 0; |
c860120c | 2775 | } |
c5aa993b JM |
2776 | break; |
2777 | default: | |
c5aa993b JM |
2778 | break; |
2779 | } | |
2780 | } | |
1c5cfe86 PA |
2781 | |
2782 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2783 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2784 | decref_bp_location (&bl); | |
1c5cfe86 | 2785 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2786 | } |
2787 | ||
6c95b8df PA |
2788 | /* These functions concern about actual breakpoints inserted in the |
2789 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2790 | we need to hop over the bkpt --- so we check for address space | |
2791 | match, not program space. */ | |
2792 | ||
c2c6d25f JM |
2793 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2794 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2795 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2796 | permanent breakpoint. | |
2797 | - When continuing from a location with an ordinary breakpoint, we | |
2798 | actually single step once before calling insert_breakpoints. | |
2799 | - When continuing from a localion with a permanent breakpoint, we | |
2800 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2801 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2802 | |
c2c6d25f | 2803 | enum breakpoint_here |
6c95b8df | 2804 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2805 | { |
35df4500 | 2806 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2807 | int any_breakpoint_here = 0; |
c906108c | 2808 | |
35df4500 | 2809 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2810 | { |
35df4500 TJB |
2811 | if (bl->loc_type != bp_loc_software_breakpoint |
2812 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2813 | continue; |
2814 | ||
f1310107 | 2815 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2816 | if ((breakpoint_enabled (bl->owner) |
2817 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2818 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2819 | { |
2820 | if (overlay_debugging | |
35df4500 TJB |
2821 | && section_is_overlay (bl->section) |
2822 | && !section_is_mapped (bl->section)) | |
075f6582 | 2823 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2824 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2825 | return permanent_breakpoint_here; |
2826 | else | |
2827 | any_breakpoint_here = 1; | |
2828 | } | |
2829 | } | |
c906108c | 2830 | |
c2c6d25f | 2831 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2832 | } |
2833 | ||
1c5cfe86 PA |
2834 | /* Return true if there's a moribund breakpoint at PC. */ |
2835 | ||
2836 | int | |
6c95b8df | 2837 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2838 | { |
2839 | struct bp_location *loc; | |
2840 | int ix; | |
2841 | ||
2842 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2843 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2844 | return 1; |
2845 | ||
2846 | return 0; | |
2847 | } | |
c2c6d25f | 2848 | |
c36b740a | 2849 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2850 | inserted using regular breakpoint_chain / bp_location array |
2851 | mechanism. This does not check for single-step breakpoints, which | |
2852 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2853 | |
2854 | int | |
4a64f543 MS |
2855 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2856 | CORE_ADDR pc) | |
c906108c | 2857 | { |
35df4500 | 2858 | struct bp_location *bl, **blp_tmp; |
c906108c | 2859 | |
35df4500 | 2860 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2861 | { |
35df4500 TJB |
2862 | if (bl->loc_type != bp_loc_software_breakpoint |
2863 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2864 | continue; |
2865 | ||
35df4500 | 2866 | if (bl->inserted |
f1310107 | 2867 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2868 | { |
2869 | if (overlay_debugging | |
35df4500 TJB |
2870 | && section_is_overlay (bl->section) |
2871 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2872 | continue; /* unmapped overlay -- can't be a match */ |
2873 | else | |
2874 | return 1; | |
2875 | } | |
c5aa993b | 2876 | } |
c36b740a VP |
2877 | return 0; |
2878 | } | |
2879 | ||
2880 | /* Returns non-zero iff there's either regular breakpoint | |
2881 | or a single step breakpoint inserted at PC. */ | |
2882 | ||
2883 | int | |
6c95b8df | 2884 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2885 | { |
6c95b8df | 2886 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2887 | return 1; |
c906108c | 2888 | |
6c95b8df | 2889 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2890 | return 1; |
2891 | ||
c906108c SS |
2892 | return 0; |
2893 | } | |
2894 | ||
4fa8626c DJ |
2895 | /* This function returns non-zero iff there is a software breakpoint |
2896 | inserted at PC. */ | |
2897 | ||
2898 | int | |
3e43a32a MS |
2899 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2900 | CORE_ADDR pc) | |
4fa8626c | 2901 | { |
35df4500 | 2902 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2903 | |
35df4500 | 2904 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2905 | { |
35df4500 | 2906 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2907 | continue; |
2908 | ||
35df4500 TJB |
2909 | if (bl->inserted |
2910 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2911 | aspace, pc)) |
4fa8626c DJ |
2912 | { |
2913 | if (overlay_debugging | |
35df4500 TJB |
2914 | && section_is_overlay (bl->section) |
2915 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2916 | continue; /* unmapped overlay -- can't be a match */ |
2917 | else | |
2918 | return 1; | |
2919 | } | |
2920 | } | |
2921 | ||
1aafd4da | 2922 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2923 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2924 | return 1; |
2925 | ||
4fa8626c DJ |
2926 | return 0; |
2927 | } | |
2928 | ||
9093389c PA |
2929 | int |
2930 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2931 | CORE_ADDR addr, ULONGEST len) | |
2932 | { | |
2933 | struct breakpoint *bpt; | |
2934 | ||
2935 | ALL_BREAKPOINTS (bpt) | |
2936 | { | |
2937 | struct bp_location *loc; | |
2938 | ||
2939 | if (bpt->type != bp_hardware_watchpoint | |
2940 | && bpt->type != bp_access_watchpoint) | |
2941 | continue; | |
2942 | ||
2943 | if (!breakpoint_enabled (bpt)) | |
2944 | continue; | |
2945 | ||
2946 | for (loc = bpt->loc; loc; loc = loc->next) | |
2947 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2948 | { | |
2949 | CORE_ADDR l, h; | |
2950 | ||
2951 | /* Check for intersection. */ | |
2952 | l = max (loc->address, addr); | |
2953 | h = min (loc->address + loc->length, addr + len); | |
2954 | if (l < h) | |
2955 | return 1; | |
2956 | } | |
2957 | } | |
2958 | return 0; | |
2959 | } | |
2960 | ||
075f6582 DJ |
2961 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2962 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2963 | |
2964 | int | |
6c95b8df PA |
2965 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2966 | ptid_t ptid) | |
c906108c | 2967 | { |
35df4500 | 2968 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2969 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2970 | int thread = -1; |
4a306c9a | 2971 | int task = 0; |
a6f1cd96 | 2972 | |
35df4500 | 2973 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2974 | { |
35df4500 TJB |
2975 | if (bl->loc_type != bp_loc_software_breakpoint |
2976 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2977 | continue; |
2978 | ||
35df4500 TJB |
2979 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2980 | if (!breakpoint_enabled (bl->owner) | |
2981 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2982 | continue; |
2983 | ||
f1310107 | 2984 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
2985 | continue; |
2986 | ||
35df4500 | 2987 | if (bl->owner->thread != -1) |
075f6582 | 2988 | { |
a6f1cd96 JB |
2989 | /* This is a thread-specific breakpoint. Check that ptid |
2990 | matches that thread. If thread hasn't been computed yet, | |
2991 | it is now time to do so. */ | |
2992 | if (thread == -1) | |
2993 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2994 | if (bl->owner->thread != thread) |
a6f1cd96 | 2995 | continue; |
075f6582 | 2996 | } |
a6f1cd96 | 2997 | |
35df4500 | 2998 | if (bl->owner->task != 0) |
4a306c9a JB |
2999 | { |
3000 | /* This is a task-specific breakpoint. Check that ptid | |
3001 | matches that task. If task hasn't been computed yet, | |
3002 | it is now time to do so. */ | |
3003 | if (task == 0) | |
3004 | task = ada_get_task_number (ptid); | |
35df4500 | 3005 | if (bl->owner->task != task) |
4a306c9a JB |
3006 | continue; |
3007 | } | |
3008 | ||
a6f1cd96 | 3009 | if (overlay_debugging |
35df4500 TJB |
3010 | && section_is_overlay (bl->section) |
3011 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3012 | continue; /* unmapped overlay -- can't be a match */ |
3013 | ||
3014 | return 1; | |
c5aa993b | 3015 | } |
c906108c SS |
3016 | |
3017 | return 0; | |
3018 | } | |
c906108c | 3019 | \f |
c5aa993b | 3020 | |
c906108c SS |
3021 | /* bpstat stuff. External routines' interfaces are documented |
3022 | in breakpoint.h. */ | |
3023 | ||
3024 | int | |
fba45db2 | 3025 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3026 | { |
533be4dd | 3027 | return (ep->type == bp_catchpoint); |
c906108c SS |
3028 | } |
3029 | ||
f431efe5 PA |
3030 | /* Frees any storage that is part of a bpstat. Does not walk the |
3031 | 'next' chain. */ | |
3032 | ||
3033 | static void | |
198757a8 VP |
3034 | bpstat_free (bpstat bs) |
3035 | { | |
3036 | if (bs->old_val != NULL) | |
3037 | value_free (bs->old_val); | |
9add0f1b | 3038 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3039 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3040 | xfree (bs); |
3041 | } | |
3042 | ||
c906108c SS |
3043 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3044 | Also free any storage that is part of a bpstat. */ | |
3045 | ||
3046 | void | |
fba45db2 | 3047 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3048 | { |
3049 | bpstat p; | |
3050 | bpstat q; | |
3051 | ||
3052 | if (bsp == 0) | |
3053 | return; | |
3054 | p = *bsp; | |
3055 | while (p != NULL) | |
3056 | { | |
3057 | q = p->next; | |
198757a8 | 3058 | bpstat_free (p); |
c906108c SS |
3059 | p = q; |
3060 | } | |
3061 | *bsp = NULL; | |
3062 | } | |
3063 | ||
3064 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3065 | is part of the bpstat is copied as well. */ | |
3066 | ||
3067 | bpstat | |
fba45db2 | 3068 | bpstat_copy (bpstat bs) |
c906108c SS |
3069 | { |
3070 | bpstat p = NULL; | |
3071 | bpstat tmp; | |
3072 | bpstat retval = NULL; | |
3073 | ||
3074 | if (bs == NULL) | |
3075 | return bs; | |
3076 | ||
3077 | for (; bs != NULL; bs = bs->next) | |
3078 | { | |
3079 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3080 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3081 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3082 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3083 | if (bs->old_val != NULL) |
3c3185ac JK |
3084 | { |
3085 | tmp->old_val = value_copy (bs->old_val); | |
3086 | release_value (tmp->old_val); | |
3087 | } | |
31cc81e9 | 3088 | |
c906108c SS |
3089 | if (p == NULL) |
3090 | /* This is the first thing in the chain. */ | |
3091 | retval = tmp; | |
3092 | else | |
3093 | p->next = tmp; | |
3094 | p = tmp; | |
3095 | } | |
3096 | p->next = NULL; | |
3097 | return retval; | |
3098 | } | |
3099 | ||
4a64f543 | 3100 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3101 | |
3102 | bpstat | |
fba45db2 | 3103 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3104 | { |
c5aa993b JM |
3105 | if (bsp == NULL) |
3106 | return NULL; | |
c906108c | 3107 | |
c5aa993b JM |
3108 | for (; bsp != NULL; bsp = bsp->next) |
3109 | { | |
f431efe5 | 3110 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3111 | return bsp; |
3112 | } | |
c906108c SS |
3113 | return NULL; |
3114 | } | |
3115 | ||
4a64f543 MS |
3116 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3117 | stopped at. *BSP upon return is a bpstat which points to the | |
3118 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3119 | good for anything but further calls to bpstat_num). | |
3120 | ||
8671a17b PA |
3121 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3122 | Return -1 if stopped at a breakpoint that has been deleted since | |
3123 | we set it. | |
3124 | Return 1 otherwise. */ | |
c906108c SS |
3125 | |
3126 | int | |
8671a17b | 3127 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3128 | { |
3129 | struct breakpoint *b; | |
3130 | ||
3131 | if ((*bsp) == NULL) | |
3132 | return 0; /* No more breakpoint values */ | |
8671a17b | 3133 | |
4a64f543 MS |
3134 | /* We assume we'll never have several bpstats that correspond to a |
3135 | single breakpoint -- otherwise, this function might return the | |
3136 | same number more than once and this will look ugly. */ | |
f431efe5 | 3137 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3138 | *bsp = (*bsp)->next; |
3139 | if (b == NULL) | |
3140 | return -1; /* breakpoint that's been deleted since */ | |
3141 | ||
3142 | *num = b->number; /* We have its number */ | |
3143 | return 1; | |
c906108c SS |
3144 | } |
3145 | ||
3146 | /* Modify BS so that the actions will not be performed. */ | |
3147 | ||
3148 | void | |
fba45db2 | 3149 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3150 | { |
3151 | for (; bs != NULL; bs = bs->next) | |
3152 | { | |
9add0f1b | 3153 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3154 | bs->commands_left = NULL; |
c906108c SS |
3155 | if (bs->old_val != NULL) |
3156 | { | |
3157 | value_free (bs->old_val); | |
3158 | bs->old_val = NULL; | |
3159 | } | |
3160 | } | |
3161 | } | |
3162 | ||
f3b1572e PA |
3163 | /* Called when a command is about to proceed the inferior. */ |
3164 | ||
3165 | static void | |
3166 | breakpoint_about_to_proceed (void) | |
3167 | { | |
3168 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3169 | { | |
3170 | struct thread_info *tp = inferior_thread (); | |
3171 | ||
3172 | /* Allow inferior function calls in breakpoint commands to not | |
3173 | interrupt the command list. When the call finishes | |
3174 | successfully, the inferior will be standing at the same | |
3175 | breakpoint as if nothing happened. */ | |
16c381f0 | 3176 | if (tp->control.in_infcall) |
f3b1572e PA |
3177 | return; |
3178 | } | |
3179 | ||
3180 | breakpoint_proceeded = 1; | |
3181 | } | |
3182 | ||
4a64f543 MS |
3183 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3184 | command. */ | |
c906108c | 3185 | static void |
4efb68b1 | 3186 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3187 | { |
3188 | executing_breakpoint_commands = 0; | |
3189 | } | |
3190 | ||
4a64f543 MS |
3191 | /* Execute all the commands associated with all the breakpoints at |
3192 | this location. Any of these commands could cause the process to | |
3193 | proceed beyond this point, etc. We look out for such changes by | |
3194 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3195 | |
347bddb7 PA |
3196 | Returns true if a breakpoint command resumed the inferior. In that |
3197 | case, it is the caller's responsibility to recall it again with the | |
3198 | bpstat of the current thread. */ | |
3199 | ||
3200 | static int | |
3201 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3202 | { |
3203 | bpstat bs; | |
3204 | struct cleanup *old_chain; | |
347bddb7 | 3205 | int again = 0; |
c906108c SS |
3206 | |
3207 | /* Avoid endless recursion if a `source' command is contained | |
3208 | in bs->commands. */ | |
3209 | if (executing_breakpoint_commands) | |
347bddb7 | 3210 | return 0; |
c906108c SS |
3211 | |
3212 | executing_breakpoint_commands = 1; | |
3213 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3214 | ||
4a64f543 | 3215 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3216 | bs = *bsp; |
3217 | ||
3218 | breakpoint_proceeded = 0; | |
3219 | for (; bs != NULL; bs = bs->next) | |
3220 | { | |
9add0f1b | 3221 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3222 | struct command_line *cmd; |
3223 | struct cleanup *this_cmd_tree_chain; | |
3224 | ||
3225 | /* Take ownership of the BSP's command tree, if it has one. | |
3226 | ||
3227 | The command tree could legitimately contain commands like | |
3228 | 'step' and 'next', which call clear_proceed_status, which | |
3229 | frees stop_bpstat's command tree. To make sure this doesn't | |
3230 | free the tree we're executing out from under us, we need to | |
3231 | take ownership of the tree ourselves. Since a given bpstat's | |
3232 | commands are only executed once, we don't need to copy it; we | |
3233 | can clear the pointer in the bpstat, and make sure we free | |
3234 | the tree when we're done. */ | |
9add0f1b TT |
3235 | ccmd = bs->commands; |
3236 | bs->commands = NULL; | |
3237 | this_cmd_tree_chain | |
3238 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3239 | cmd = bs->commands_left; | |
3240 | bs->commands_left = NULL; | |
6c50ab1c | 3241 | |
c906108c SS |
3242 | while (cmd != NULL) |
3243 | { | |
3244 | execute_control_command (cmd); | |
3245 | ||
3246 | if (breakpoint_proceeded) | |
3247 | break; | |
3248 | else | |
3249 | cmd = cmd->next; | |
3250 | } | |
6c50ab1c JB |
3251 | |
3252 | /* We can free this command tree now. */ | |
3253 | do_cleanups (this_cmd_tree_chain); | |
3254 | ||
c906108c | 3255 | if (breakpoint_proceeded) |
32c1e744 VP |
3256 | { |
3257 | if (target_can_async_p ()) | |
347bddb7 PA |
3258 | /* If we are in async mode, then the target might be still |
3259 | running, not stopped at any breakpoint, so nothing for | |
3260 | us to do here -- just return to the event loop. */ | |
3261 | ; | |
32c1e744 VP |
3262 | else |
3263 | /* In sync mode, when execute_control_command returns | |
3264 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3265 | Breakpoint commands for that stop were not run, since |
3266 | execute_command does not run breakpoint commands -- | |
3267 | only command_line_handler does, but that one is not | |
3268 | involved in execution of breakpoint commands. So, we | |
3269 | can now execute breakpoint commands. It should be | |
3270 | noted that making execute_command do bpstat actions is | |
3271 | not an option -- in this case we'll have recursive | |
3272 | invocation of bpstat for each breakpoint with a | |
3273 | command, and can easily blow up GDB stack. Instead, we | |
3274 | return true, which will trigger the caller to recall us | |
3275 | with the new stop_bpstat. */ | |
3276 | again = 1; | |
3277 | break; | |
32c1e744 | 3278 | } |
c906108c | 3279 | } |
c2b8ed2c | 3280 | do_cleanups (old_chain); |
347bddb7 PA |
3281 | return again; |
3282 | } | |
3283 | ||
3284 | void | |
3285 | bpstat_do_actions (void) | |
3286 | { | |
3287 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3288 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3289 | && target_has_execution | |
3290 | && !is_exited (inferior_ptid) | |
3291 | && !is_executing (inferior_ptid)) | |
3292 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3293 | and only return when it is stopped at the next breakpoint, we | |
3294 | keep doing breakpoint actions until it returns false to | |
3295 | indicate the inferior was not resumed. */ | |
16c381f0 | 3296 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3297 | break; |
c906108c SS |
3298 | } |
3299 | ||
fa4727a6 DJ |
3300 | /* Print out the (old or new) value associated with a watchpoint. */ |
3301 | ||
3302 | static void | |
3303 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3304 | { | |
3305 | if (val == NULL) | |
3306 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3307 | else | |
79a45b7d TT |
3308 | { |
3309 | struct value_print_options opts; | |
3310 | get_user_print_options (&opts); | |
3311 | value_print (val, stream, &opts); | |
3312 | } | |
fa4727a6 DJ |
3313 | } |
3314 | ||
e514a9d6 | 3315 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3316 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3317 | by having it set different print_it values. |
3318 | ||
3319 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3320 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3321 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3322 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3323 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3324 | |
3325 | Return values from this routine (ultimately used by bpstat_print() | |
3326 | and normal_stop() to decide what to do): | |
3327 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3328 | don't print anything else. | |
3329 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3330 | that something to be followed by a location. | |
3331 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3332 | that something to be followed by a location. | |
3333 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3334 | analysis. */ | |
c906108c | 3335 | |
917317f4 | 3336 | static enum print_stop_action |
fba45db2 | 3337 | print_it_typical (bpstat bs) |
c906108c | 3338 | { |
f7545552 | 3339 | struct cleanup *old_chain; |
4f8d1dc6 | 3340 | struct breakpoint *b; |
89f9893c | 3341 | const struct bp_location *bl; |
8b93c638 | 3342 | struct ui_stream *stb; |
f7545552 TT |
3343 | int bp_temp = 0; |
3344 | enum print_stop_action result; | |
3345 | ||
f431efe5 PA |
3346 | gdb_assert (bs->bp_location_at != NULL); |
3347 | ||
3348 | bl = bs->bp_location_at; | |
3349 | b = bs->breakpoint_at; | |
c906108c | 3350 | |
f7545552 TT |
3351 | stb = ui_out_stream_new (uiout); |
3352 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3353 | ||
4f8d1dc6 | 3354 | switch (b->type) |
c906108c | 3355 | { |
e514a9d6 JM |
3356 | case bp_breakpoint: |
3357 | case bp_hardware_breakpoint: | |
f431efe5 | 3358 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3359 | if (bl->address != bl->requested_address) |
3360 | breakpoint_adjustment_warning (bl->requested_address, | |
3361 | bl->address, | |
4f8d1dc6 VP |
3362 | b->number, 1); |
3363 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3364 | if (bp_temp) |
3365 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3366 | else | |
3367 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3368 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3369 | { |
3370 | ui_out_field_string (uiout, "reason", | |
3371 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3372 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3373 | } | |
4f8d1dc6 | 3374 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3375 | ui_out_text (uiout, ", "); |
f7545552 | 3376 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3377 | break; |
3378 | ||
3379 | case bp_shlib_event: | |
917317f4 JM |
3380 | /* Did we stop because the user set the stop_on_solib_events |
3381 | variable? (If so, we report this as a generic, "Stopped due | |
3382 | to shlib event" message.) */ | |
a3f17187 | 3383 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3384 | result = PRINT_NOTHING; |
e514a9d6 JM |
3385 | break; |
3386 | ||
c4093a6a | 3387 | case bp_thread_event: |
4a64f543 | 3388 | /* Not sure how we will get here. |
c4093a6a | 3389 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3390 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3391 | result = PRINT_NOTHING; |
c4093a6a JM |
3392 | break; |
3393 | ||
1900040c | 3394 | case bp_overlay_event: |
4a64f543 | 3395 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3396 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3397 | result = PRINT_NOTHING; |
1900040c MS |
3398 | break; |
3399 | ||
0fd8e87f UW |
3400 | case bp_longjmp_master: |
3401 | /* These should never be enabled. */ | |
3402 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3403 | result = PRINT_NOTHING; | |
3404 | break; | |
3405 | ||
aa7d318d TT |
3406 | case bp_std_terminate_master: |
3407 | /* These should never be enabled. */ | |
3e43a32a MS |
3408 | printf_filtered (_("std::terminate Master Breakpoint: " |
3409 | "gdb should not stop!\n")); | |
aa7d318d TT |
3410 | result = PRINT_NOTHING; |
3411 | break; | |
3412 | ||
186c406b TT |
3413 | case bp_exception_master: |
3414 | /* These should never be enabled. */ | |
3e43a32a MS |
3415 | printf_filtered (_("Exception Master Breakpoint: " |
3416 | "gdb should not stop!\n")); | |
186c406b TT |
3417 | result = PRINT_NOTHING; |
3418 | break; | |
3419 | ||
e514a9d6 JM |
3420 | case bp_watchpoint: |
3421 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3422 | annotate_watchpoint (b->number); |
3423 | if (ui_out_is_mi_like_p (uiout)) | |
3424 | ui_out_field_string | |
3425 | (uiout, "reason", | |
3426 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3427 | mention (b); | |
f7545552 | 3428 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3429 | ui_out_text (uiout, "\nOld value = "); |
3430 | watchpoint_value_print (bs->old_val, stb->stream); | |
3431 | ui_out_field_stream (uiout, "old", stb); | |
3432 | ui_out_text (uiout, "\nNew value = "); | |
3433 | watchpoint_value_print (b->val, stb->stream); | |
3434 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3435 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3436 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3437 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3438 | break; |
3439 | ||
3440 | case bp_read_watchpoint: | |
9dc5e2a9 | 3441 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3442 | ui_out_field_string |
3443 | (uiout, "reason", | |
3444 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3445 | mention (b); |
f7545552 | 3446 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3447 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3448 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3449 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3450 | ui_out_text (uiout, "\n"); |
f7545552 | 3451 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3452 | break; |
3453 | ||
3454 | case bp_access_watchpoint: | |
fa4727a6 | 3455 | if (bs->old_val != NULL) |
8b93c638 | 3456 | { |
4f8d1dc6 | 3457 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3458 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3459 | ui_out_field_string |
3460 | (uiout, "reason", | |
3461 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3462 | mention (b); |
f7545552 | 3463 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3464 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3465 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3466 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3467 | ui_out_text (uiout, "\nNew value = "); |
3468 | } | |
3469 | else | |
3470 | { | |
4f8d1dc6 | 3471 | mention (b); |
9dc5e2a9 | 3472 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3473 | ui_out_field_string |
3474 | (uiout, "reason", | |
3475 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3476 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3477 | ui_out_text (uiout, "\nValue = "); |
3478 | } | |
fa4727a6 | 3479 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3480 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3481 | ui_out_text (uiout, "\n"); |
f7545552 | 3482 | result = PRINT_UNKNOWN; |
e514a9d6 | 3483 | break; |
4ce44c66 | 3484 | |
e514a9d6 | 3485 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3486 | here. */ |
e514a9d6 | 3487 | |
11cf8741 | 3488 | case bp_finish: |
9dc5e2a9 | 3489 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3490 | ui_out_field_string |
3491 | (uiout, "reason", | |
3492 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3493 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3494 | break; |
3495 | ||
e514a9d6 | 3496 | case bp_until: |
9dc5e2a9 | 3497 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3498 | ui_out_field_string |
3499 | (uiout, "reason", | |
3500 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3501 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3502 | break; |
3503 | ||
c2d11a7d | 3504 | case bp_none: |
e514a9d6 JM |
3505 | case bp_longjmp: |
3506 | case bp_longjmp_resume: | |
186c406b TT |
3507 | case bp_exception: |
3508 | case bp_exception_resume: | |
e514a9d6 | 3509 | case bp_step_resume: |
e514a9d6 JM |
3510 | case bp_watchpoint_scope: |
3511 | case bp_call_dummy: | |
aa7d318d | 3512 | case bp_std_terminate: |
1042e4c0 | 3513 | case bp_tracepoint: |
7a697b8d | 3514 | case bp_fast_tracepoint: |
4efc6507 | 3515 | case bp_jit_event: |
0e30163f JK |
3516 | case bp_gnu_ifunc_resolver: |
3517 | case bp_gnu_ifunc_resolver_return: | |
e514a9d6 | 3518 | default: |
f7545552 TT |
3519 | result = PRINT_UNKNOWN; |
3520 | break; | |
e514a9d6 | 3521 | } |
f7545552 TT |
3522 | |
3523 | do_cleanups (old_chain); | |
3524 | return result; | |
e514a9d6 JM |
3525 | } |
3526 | ||
3527 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3528 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3529 | 'print_it' in the bpstat structure. Under some circumstances we |
3530 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3531 | normal_stop(). */ |
e514a9d6 JM |
3532 | |
3533 | static enum print_stop_action | |
3534 | print_bp_stop_message (bpstat bs) | |
3535 | { | |
3536 | switch (bs->print_it) | |
3537 | { | |
3538 | case print_it_noop: | |
4a64f543 | 3539 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3540 | return PRINT_UNKNOWN; |
3541 | break; | |
3542 | ||
3543 | case print_it_done: | |
3544 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3545 | relevant messages. */ |
e514a9d6 JM |
3546 | return PRINT_SRC_AND_LOC; |
3547 | break; | |
3548 | ||
3549 | case print_it_normal: | |
4f8d1dc6 | 3550 | { |
f431efe5 PA |
3551 | struct breakpoint *b = bs->breakpoint_at; |
3552 | ||
1a6a67de TJB |
3553 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3554 | which has since been deleted. */ | |
3555 | if (b == NULL) | |
3556 | return PRINT_UNKNOWN; | |
3557 | ||
4f8d1dc6 VP |
3558 | /* Normal case. Call the breakpoint's print_it method, or |
3559 | print_it_typical. */ | |
1a6a67de | 3560 | if (b->ops != NULL && b->ops->print_it != NULL) |
4f8d1dc6 VP |
3561 | return b->ops->print_it (b); |
3562 | else | |
3563 | return print_it_typical (bs); | |
3564 | } | |
3565 | break; | |
3086aeae | 3566 | |
e514a9d6 | 3567 | default: |
8e65ff28 | 3568 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3569 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3570 | break; |
c906108c | 3571 | } |
c906108c SS |
3572 | } |
3573 | ||
e514a9d6 JM |
3574 | /* Print a message indicating what happened. This is called from |
3575 | normal_stop(). The input to this routine is the head of the bpstat | |
3576 | list - a list of the eventpoints that caused this stop. This | |
3577 | routine calls the generic print routine for printing a message | |
3578 | about reasons for stopping. This will print (for example) the | |
3579 | "Breakpoint n," part of the output. The return value of this | |
3580 | routine is one of: | |
c906108c | 3581 | |
4a64f543 | 3582 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3583 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3584 | code to print the location. An example is |
c5aa993b JM |
3585 | "Breakpoint 1, " which should be followed by |
3586 | the location. | |
917317f4 | 3587 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3588 | to also print the location part of the message. |
3589 | An example is the catch/throw messages, which | |
4a64f543 | 3590 | don't require a location appended to the end. |
917317f4 | 3591 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3592 | further info to be printed. */ |
c906108c | 3593 | |
917317f4 | 3594 | enum print_stop_action |
fba45db2 | 3595 | bpstat_print (bpstat bs) |
c906108c SS |
3596 | { |
3597 | int val; | |
c5aa993b | 3598 | |
c906108c | 3599 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3600 | (Currently all watchpoints go on the bpstat whether hit or not. |
3601 | That probably could (should) be changed, provided care is taken | |
c906108c | 3602 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3603 | for (; bs; bs = bs->next) |
3604 | { | |
3605 | val = print_bp_stop_message (bs); | |
3606 | if (val == PRINT_SRC_ONLY | |
3607 | || val == PRINT_SRC_AND_LOC | |
3608 | || val == PRINT_NOTHING) | |
3609 | return val; | |
3610 | } | |
c906108c | 3611 | |
e514a9d6 | 3612 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3613 | with and nothing was printed. */ |
917317f4 | 3614 | return PRINT_UNKNOWN; |
c906108c SS |
3615 | } |
3616 | ||
4a64f543 MS |
3617 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3618 | used inside a catch_errors to evaluate the breakpoint condition. | |
3619 | The argument is a "struct expression *" that has been cast to a | |
3620 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3621 | |
3622 | static int | |
4efb68b1 | 3623 | breakpoint_cond_eval (void *exp) |
c906108c | 3624 | { |
278cd55f | 3625 | struct value *mark = value_mark (); |
c5aa993b | 3626 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3627 | |
c906108c SS |
3628 | value_free_to_mark (mark); |
3629 | return i; | |
3630 | } | |
3631 | ||
5760d0ab | 3632 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3633 | |
3634 | static bpstat | |
5760d0ab | 3635 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3636 | { |
3637 | bpstat bs; | |
3638 | ||
3639 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3640 | bs->next = NULL; |
3641 | **bs_link_pointer = bs; | |
3642 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3643 | bs->breakpoint_at = bl->owner; |
3644 | bs->bp_location_at = bl; | |
3645 | incref_bp_location (bl); | |
c906108c SS |
3646 | /* If the condition is false, etc., don't do the commands. */ |
3647 | bs->commands = NULL; | |
9add0f1b | 3648 | bs->commands_left = NULL; |
c906108c SS |
3649 | bs->old_val = NULL; |
3650 | bs->print_it = print_it_normal; | |
3651 | return bs; | |
3652 | } | |
3653 | \f | |
d983da9c DJ |
3654 | /* The target has stopped with waitstatus WS. Check if any hardware |
3655 | watchpoints have triggered, according to the target. */ | |
3656 | ||
3657 | int | |
3658 | watchpoints_triggered (struct target_waitstatus *ws) | |
3659 | { | |
d92524f1 | 3660 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3661 | CORE_ADDR addr; |
3662 | struct breakpoint *b; | |
3663 | ||
3664 | if (!stopped_by_watchpoint) | |
3665 | { | |
3666 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3667 | as not triggered. */ | |
3668 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3669 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3670 | b->watchpoint_triggered = watch_triggered_no; |
3671 | ||
3672 | return 0; | |
3673 | } | |
3674 | ||
3675 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3676 | { | |
3677 | /* We were stopped by a watchpoint, but we don't know where. | |
3678 | Mark all watchpoints as unknown. */ | |
3679 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3680 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3681 | b->watchpoint_triggered = watch_triggered_unknown; |
3682 | ||
3683 | return stopped_by_watchpoint; | |
3684 | } | |
3685 | ||
3686 | /* The target could report the data address. Mark watchpoints | |
3687 | affected by this data address as triggered, and all others as not | |
3688 | triggered. */ | |
3689 | ||
3690 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3691 | if (is_hardware_watchpoint (b)) |
d983da9c | 3692 | { |
a5606eee | 3693 | struct bp_location *loc; |
d983da9c DJ |
3694 | |
3695 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3696 | for (loc = b->loc; loc; loc = loc->next) |
3697 | /* Exact match not required. Within range is | |
3698 | sufficient. */ | |
5009afc5 AS |
3699 | if (target_watchpoint_addr_within_range (¤t_target, |
3700 | addr, loc->address, | |
3701 | loc->length)) | |
a5606eee VP |
3702 | { |
3703 | b->watchpoint_triggered = watch_triggered_yes; | |
3704 | break; | |
3705 | } | |
d983da9c DJ |
3706 | } |
3707 | ||
3708 | return 1; | |
3709 | } | |
3710 | ||
c906108c SS |
3711 | /* Possible return values for watchpoint_check (this can't be an enum |
3712 | because of check_errors). */ | |
3713 | /* The watchpoint has been deleted. */ | |
3714 | #define WP_DELETED 1 | |
3715 | /* The value has changed. */ | |
3716 | #define WP_VALUE_CHANGED 2 | |
3717 | /* The value has not changed. */ | |
3718 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3719 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3720 | #define WP_IGNORE 4 | |
c906108c SS |
3721 | |
3722 | #define BP_TEMPFLAG 1 | |
3723 | #define BP_HARDWAREFLAG 2 | |
3724 | ||
4a64f543 MS |
3725 | /* Evaluate watchpoint condition expression and check if its value |
3726 | changed. | |
553e4c11 JB |
3727 | |
3728 | P should be a pointer to struct bpstat, but is defined as a void * | |
3729 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3730 | |
3731 | static int | |
4efb68b1 | 3732 | watchpoint_check (void *p) |
c906108c SS |
3733 | { |
3734 | bpstat bs = (bpstat) p; | |
3735 | struct breakpoint *b; | |
3736 | struct frame_info *fr; | |
3737 | int within_current_scope; | |
3738 | ||
f431efe5 | 3739 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3740 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3741 | b = bs->breakpoint_at; |
c906108c | 3742 | |
d0fb5eae JK |
3743 | gdb_assert (is_watchpoint (b)); |
3744 | ||
f6bc2008 PA |
3745 | /* If this is a local watchpoint, we only want to check if the |
3746 | watchpoint frame is in scope if the current thread is the thread | |
3747 | that was used to create the watchpoint. */ | |
3748 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3749 | return WP_IGNORE; |
f6bc2008 | 3750 | |
c906108c SS |
3751 | if (b->exp_valid_block == NULL) |
3752 | within_current_scope = 1; | |
3753 | else | |
3754 | { | |
edb3359d DJ |
3755 | struct frame_info *frame = get_current_frame (); |
3756 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3757 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3758 | ||
4a64f543 MS |
3759 | /* in_function_epilogue_p() returns a non-zero value if we're |
3760 | still in the function but the stack frame has already been | |
3761 | invalidated. Since we can't rely on the values of local | |
3762 | variables after the stack has been destroyed, we are treating | |
3763 | the watchpoint in that state as `not changed' without further | |
3764 | checking. Don't mark watchpoints as changed if the current | |
3765 | frame is in an epilogue - even if they are in some other | |
3766 | frame, our view of the stack is likely to be wrong and | |
3767 | frame_find_by_id could error out. */ | |
a0f49112 | 3768 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3769 | return WP_IGNORE; |
a0f49112 | 3770 | |
101dcfbe | 3771 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3772 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3773 | |
3774 | /* If we've gotten confused in the unwinder, we might have | |
3775 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3776 | if (within_current_scope) |
3777 | { | |
3778 | struct symbol *function; | |
3779 | ||
3780 | function = get_frame_function (fr); | |
3781 | if (function == NULL | |
3782 | || !contained_in (b->exp_valid_block, | |
3783 | SYMBOL_BLOCK_VALUE (function))) | |
3784 | within_current_scope = 0; | |
3785 | } | |
69fbadd5 | 3786 | |
edb3359d | 3787 | if (within_current_scope) |
c906108c SS |
3788 | /* If we end up stopping, the current frame will get selected |
3789 | in normal_stop. So this call to select_frame won't affect | |
3790 | the user. */ | |
0f7d239c | 3791 | select_frame (fr); |
c906108c | 3792 | } |
c5aa993b | 3793 | |
c906108c SS |
3794 | if (within_current_scope) |
3795 | { | |
4a64f543 MS |
3796 | /* We use value_{,free_to_}mark because it could be a *long* |
3797 | time before we return to the command level and call | |
3798 | free_all_values. We can't call free_all_values because we | |
3799 | might be in the middle of evaluating a function call. */ | |
c906108c | 3800 | |
0cf6dd15 | 3801 | int pc = 0; |
278cd55f | 3802 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3803 | struct value *new_val; |
3804 | ||
0cf6dd15 | 3805 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3806 | |
4a64f543 MS |
3807 | /* We use value_equal_contents instead of value_equal because |
3808 | the latter coerces an array to a pointer, thus comparing just | |
3809 | the address of the array instead of its contents. This is | |
3810 | not what we want. */ | |
fa4727a6 | 3811 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3812 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3813 | { |
fa4727a6 DJ |
3814 | if (new_val != NULL) |
3815 | { | |
3816 | release_value (new_val); | |
3817 | value_free_to_mark (mark); | |
3818 | } | |
c906108c SS |
3819 | bs->old_val = b->val; |
3820 | b->val = new_val; | |
fa4727a6 | 3821 | b->val_valid = 1; |
c906108c SS |
3822 | return WP_VALUE_CHANGED; |
3823 | } | |
3824 | else | |
3825 | { | |
60e1c644 | 3826 | /* Nothing changed. */ |
c906108c | 3827 | value_free_to_mark (mark); |
c906108c SS |
3828 | return WP_VALUE_NOT_CHANGED; |
3829 | } | |
3830 | } | |
3831 | else | |
3832 | { | |
3833 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3834 | if we temporarily ignored the watchpoint, then when |
3835 | we reenter the block in which it is valid it contains | |
3836 | garbage (in the case of a function, it may have two | |
3837 | garbage values, one before and one after the prologue). | |
3838 | So we can't even detect the first assignment to it and | |
3839 | watch after that (since the garbage may or may not equal | |
3840 | the first value assigned). */ | |
4ce44c66 JM |
3841 | /* We print all the stop information in print_it_typical(), but |
3842 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3843 | will be deleted already. So we have no choice but print the |
3844 | information here. */ | |
9dc5e2a9 | 3845 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3846 | ui_out_field_string |
3847 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3848 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3849 | ui_out_field_int (uiout, "wpnum", b->number); |
3e43a32a MS |
3850 | ui_out_text (uiout, |
3851 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3852 | which its expression is valid.\n"); |
4ce44c66 | 3853 | |
d0fb5eae | 3854 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3855 | |
3856 | return WP_DELETED; | |
3857 | } | |
3858 | } | |
3859 | ||
18a18393 VP |
3860 | /* Return true if it looks like target has stopped due to hitting |
3861 | breakpoint location BL. This function does not check if we | |
3862 | should stop, only if BL explains the stop. */ | |
3863 | static int | |
6c95b8df PA |
3864 | bpstat_check_location (const struct bp_location *bl, |
3865 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3866 | { |
3867 | struct breakpoint *b = bl->owner; | |
3868 | ||
2bdf28a0 JK |
3869 | /* BL is from existing struct breakpoint. */ |
3870 | gdb_assert (b != NULL); | |
3871 | ||
f1310107 TJB |
3872 | if (b->ops && b->ops->breakpoint_hit) |
3873 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); | |
3874 | ||
e8595ef6 SS |
3875 | /* By definition, the inferior does not report stops at |
3876 | tracepoints. */ | |
d77f58be | 3877 | if (is_tracepoint (b)) |
e8595ef6 SS |
3878 | return 0; |
3879 | ||
cc60f2e3 | 3880 | if (!is_watchpoint (b) |
18a18393 | 3881 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3882 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3883 | { |
6c95b8df PA |
3884 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3885 | aspace, bp_addr)) | |
18a18393 VP |
3886 | return 0; |
3887 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3888 | && section_is_overlay (bl->section) |
18a18393 VP |
3889 | && !section_is_mapped (bl->section)) |
3890 | return 0; | |
3891 | } | |
cc60f2e3 | 3892 | |
18a18393 VP |
3893 | /* Continuable hardware watchpoints are treated as non-existent if the |
3894 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3895 | some data address). Otherwise gdb won't stop on a break instruction | |
3896 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3897 | been defined. Also skip watchpoints which we know did not trigger | |
3898 | (did not match the data address). */ | |
cc60f2e3 PA |
3899 | |
3900 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3901 | && b->watchpoint_triggered == watch_triggered_no) |
3902 | return 0; | |
f1310107 | 3903 | |
18a18393 VP |
3904 | if (b->type == bp_hardware_breakpoint) |
3905 | { | |
3906 | if (bl->address != bp_addr) | |
3907 | return 0; | |
3908 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3909 | && section_is_overlay (bl->section) |
18a18393 VP |
3910 | && !section_is_mapped (bl->section)) |
3911 | return 0; | |
3912 | } | |
ce78b96d | 3913 | |
18a18393 VP |
3914 | return 1; |
3915 | } | |
3916 | ||
3917 | /* If BS refers to a watchpoint, determine if the watched values | |
3918 | has actually changed, and we should stop. If not, set BS->stop | |
3919 | to 0. */ | |
3920 | static void | |
3921 | bpstat_check_watchpoint (bpstat bs) | |
3922 | { | |
2bdf28a0 JK |
3923 | const struct bp_location *bl; |
3924 | struct breakpoint *b; | |
3925 | ||
3926 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3927 | bl = bs->bp_location_at; |
2bdf28a0 | 3928 | gdb_assert (bl != NULL); |
f431efe5 | 3929 | b = bs->breakpoint_at; |
2bdf28a0 | 3930 | gdb_assert (b != NULL); |
18a18393 | 3931 | |
cc60f2e3 | 3932 | if (is_watchpoint (b)) |
18a18393 | 3933 | { |
18a18393 VP |
3934 | int must_check_value = 0; |
3935 | ||
3936 | if (b->type == bp_watchpoint) | |
3937 | /* For a software watchpoint, we must always check the | |
3938 | watched value. */ | |
3939 | must_check_value = 1; | |
3940 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3941 | /* We have a hardware watchpoint (read, write, or access) | |
3942 | and the target earlier reported an address watched by | |
3943 | this watchpoint. */ | |
3944 | must_check_value = 1; | |
3945 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3946 | && b->type == bp_hardware_watchpoint) | |
3947 | /* We were stopped by a hardware watchpoint, but the target could | |
3948 | not report the data address. We must check the watchpoint's | |
3949 | value. Access and read watchpoints are out of luck; without | |
3950 | a data address, we can't figure it out. */ | |
3951 | must_check_value = 1; | |
3952 | ||
3953 | if (must_check_value) | |
3954 | { | |
3e43a32a MS |
3955 | char *message |
3956 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3957 | b->number); | |
18a18393 VP |
3958 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3959 | int e = catch_errors (watchpoint_check, bs, message, | |
3960 | RETURN_MASK_ALL); | |
3961 | do_cleanups (cleanups); | |
3962 | switch (e) | |
3963 | { | |
3964 | case WP_DELETED: | |
3965 | /* We've already printed what needs to be printed. */ | |
3966 | bs->print_it = print_it_done; | |
3967 | /* Stop. */ | |
3968 | break; | |
60e1c644 PA |
3969 | case WP_IGNORE: |
3970 | bs->print_it = print_it_noop; | |
3971 | bs->stop = 0; | |
3972 | break; | |
18a18393 VP |
3973 | case WP_VALUE_CHANGED: |
3974 | if (b->type == bp_read_watchpoint) | |
3975 | { | |
85d721b8 PA |
3976 | /* There are two cases to consider here: |
3977 | ||
4a64f543 | 3978 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3979 | In that case, trust the target, and always report |
3980 | the watchpoint hit to the user. Even though | |
3981 | reads don't cause value changes, the value may | |
3982 | have changed since the last time it was read, and | |
3983 | since we're not trapping writes, we will not see | |
3984 | those, and as such we should ignore our notion of | |
3985 | old value. | |
3986 | ||
4a64f543 | 3987 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3988 | reads and writes. There are two ways this may |
3989 | happen: | |
3990 | ||
4a64f543 | 3991 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3992 | reads only, but can break on accesses (reads or |
3993 | writes), such as e.g., x86. We detect this case | |
3994 | at the time we try to insert read watchpoints. | |
3995 | ||
4a64f543 | 3996 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3997 | watchpoints, but, the user set an access or write |
3998 | watchpoint watching the same memory as this read | |
3999 | watchpoint. | |
4000 | ||
4001 | If we're watching memory writes as well as reads, | |
4002 | ignore watchpoint hits when we find that the | |
4003 | value hasn't changed, as reads don't cause | |
4004 | changes. This still gives false positives when | |
4005 | the program writes the same value to memory as | |
4006 | what there was already in memory (we will confuse | |
4007 | it for a read), but it's much better than | |
4008 | nothing. */ | |
4009 | ||
4010 | int other_write_watchpoint = 0; | |
4011 | ||
4012 | if (bl->watchpoint_type == hw_read) | |
4013 | { | |
4014 | struct breakpoint *other_b; | |
4015 | ||
4016 | ALL_BREAKPOINTS (other_b) | |
4017 | if ((other_b->type == bp_hardware_watchpoint | |
4018 | || other_b->type == bp_access_watchpoint) | |
4019 | && (other_b->watchpoint_triggered | |
4020 | == watch_triggered_yes)) | |
4021 | { | |
4022 | other_write_watchpoint = 1; | |
4023 | break; | |
4024 | } | |
4025 | } | |
4026 | ||
4027 | if (other_write_watchpoint | |
4028 | || bl->watchpoint_type == hw_access) | |
4029 | { | |
4030 | /* We're watching the same memory for writes, | |
4031 | and the value changed since the last time we | |
4032 | updated it, so this trap must be for a write. | |
4033 | Ignore it. */ | |
4034 | bs->print_it = print_it_noop; | |
4035 | bs->stop = 0; | |
4036 | } | |
18a18393 VP |
4037 | } |
4038 | break; | |
4039 | case WP_VALUE_NOT_CHANGED: | |
4040 | if (b->type == bp_hardware_watchpoint | |
4041 | || b->type == bp_watchpoint) | |
4042 | { | |
4043 | /* Don't stop: write watchpoints shouldn't fire if | |
4044 | the value hasn't changed. */ | |
4045 | bs->print_it = print_it_noop; | |
4046 | bs->stop = 0; | |
4047 | } | |
4048 | /* Stop. */ | |
4049 | break; | |
4050 | default: | |
4051 | /* Can't happen. */ | |
4052 | case 0: | |
4053 | /* Error from catch_errors. */ | |
4054 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
d0fb5eae | 4055 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4056 | /* We've already printed what needs to be printed. */ |
4057 | bs->print_it = print_it_done; | |
4058 | break; | |
4059 | } | |
4060 | } | |
4061 | else /* must_check_value == 0 */ | |
4062 | { | |
4063 | /* This is a case where some watchpoint(s) triggered, but | |
4064 | not at the address of this watchpoint, or else no | |
4065 | watchpoint triggered after all. So don't print | |
4066 | anything for this watchpoint. */ | |
4067 | bs->print_it = print_it_noop; | |
4068 | bs->stop = 0; | |
4069 | } | |
4070 | } | |
4071 | } | |
4072 | ||
4073 | ||
4074 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4075 | of breakpoint referred to by BS. If we should not stop for this | |
4076 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4077 | |
18a18393 VP |
4078 | static void |
4079 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4080 | { | |
4081 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4082 | const struct bp_location *bl; |
4083 | struct breakpoint *b; | |
4084 | ||
4085 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4086 | bl = bs->bp_location_at; |
2bdf28a0 | 4087 | gdb_assert (bl != NULL); |
f431efe5 | 4088 | b = bs->breakpoint_at; |
2bdf28a0 | 4089 | gdb_assert (b != NULL); |
18a18393 VP |
4090 | |
4091 | if (frame_id_p (b->frame_id) | |
edb3359d | 4092 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4093 | bs->stop = 0; |
4094 | else if (bs->stop) | |
4095 | { | |
4096 | int value_is_zero = 0; | |
60e1c644 PA |
4097 | struct expression *cond; |
4098 | ||
7371cf6d PM |
4099 | /* Evaluate Python breakpoints that have a "stop" |
4100 | method implemented. */ | |
4101 | if (b->py_bp_object) | |
4102 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4103 | ||
60e1c644 PA |
4104 | if (is_watchpoint (b)) |
4105 | cond = b->cond_exp; | |
4106 | else | |
4107 | cond = bl->cond; | |
4108 | ||
f431efe5 | 4109 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4110 | { |
60e1c644 PA |
4111 | int within_current_scope = 1; |
4112 | ||
c5bc3a77 DJ |
4113 | /* We use value_mark and value_free_to_mark because it could |
4114 | be a long time before we return to the command level and | |
4115 | call free_all_values. We can't call free_all_values | |
4116 | because we might be in the middle of evaluating a | |
4117 | function call. */ | |
4118 | struct value *mark = value_mark (); | |
4119 | ||
edb3359d DJ |
4120 | /* Need to select the frame, with all that implies so that |
4121 | the conditions will have the right context. Because we | |
4122 | use the frame, we will not see an inlined function's | |
4123 | variables when we arrive at a breakpoint at the start | |
4124 | of the inlined function; the current frame will be the | |
4125 | call site. */ | |
60e1c644 PA |
4126 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4127 | select_frame (get_current_frame ()); | |
4128 | else | |
4129 | { | |
4130 | struct frame_info *frame; | |
4131 | ||
4132 | /* For local watchpoint expressions, which particular | |
4133 | instance of a local is being watched matters, so we | |
4134 | keep track of the frame to evaluate the expression | |
4135 | in. To evaluate the condition however, it doesn't | |
4136 | really matter which instantiation of the function | |
4137 | where the condition makes sense triggers the | |
4138 | watchpoint. This allows an expression like "watch | |
4139 | global if q > 10" set in `func', catch writes to | |
4140 | global on all threads that call `func', or catch | |
4141 | writes on all recursive calls of `func' by a single | |
4142 | thread. We simply always evaluate the condition in | |
4143 | the innermost frame that's executing where it makes | |
4144 | sense to evaluate the condition. It seems | |
4145 | intuitive. */ | |
4146 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4147 | if (frame != NULL) | |
4148 | select_frame (frame); | |
4149 | else | |
4150 | within_current_scope = 0; | |
4151 | } | |
4152 | if (within_current_scope) | |
4153 | value_is_zero | |
4154 | = catch_errors (breakpoint_cond_eval, cond, | |
4155 | "Error in testing breakpoint condition:\n", | |
4156 | RETURN_MASK_ALL); | |
4157 | else | |
4158 | { | |
4159 | warning (_("Watchpoint condition cannot be tested " | |
4160 | "in the current scope")); | |
4161 | /* If we failed to set the right context for this | |
4162 | watchpoint, unconditionally report it. */ | |
4163 | value_is_zero = 0; | |
4164 | } | |
4a64f543 | 4165 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4166 | value_free_to_mark (mark); |
18a18393 | 4167 | } |
60e1c644 PA |
4168 | |
4169 | if (cond && value_is_zero) | |
18a18393 VP |
4170 | { |
4171 | bs->stop = 0; | |
4172 | } | |
4173 | else if (b->thread != -1 && b->thread != thread_id) | |
4174 | { | |
4175 | bs->stop = 0; | |
4176 | } | |
4177 | else if (b->ignore_count > 0) | |
4178 | { | |
4179 | b->ignore_count--; | |
4180 | annotate_ignore_count_change (); | |
4181 | bs->stop = 0; | |
4a64f543 | 4182 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4183 | ++(b->hit_count); |
8d3788bd | 4184 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4185 | } |
4186 | } | |
4187 | } | |
4188 | ||
4189 | ||
9709f61c | 4190 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4191 | BP_ADDR in thread PTID. |
c906108c | 4192 | |
d983da9c | 4193 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4194 | don't understand this stop. Result is a chain of bpstat's such |
4195 | that: | |
c906108c | 4196 | |
c5aa993b | 4197 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4198 | |
c5aa993b | 4199 | if we understand why we stopped, the result is not null. |
c906108c | 4200 | |
c5aa993b JM |
4201 | Each element of the chain refers to a particular breakpoint or |
4202 | watchpoint at which we have stopped. (We may have stopped for | |
4203 | several reasons concurrently.) | |
c906108c | 4204 | |
c5aa993b JM |
4205 | Each element of the chain has valid next, breakpoint_at, |
4206 | commands, FIXME??? fields. */ | |
c906108c SS |
4207 | |
4208 | bpstat | |
6c95b8df PA |
4209 | bpstat_stop_status (struct address_space *aspace, |
4210 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4211 | { |
0d381245 | 4212 | struct breakpoint *b = NULL; |
afe38095 | 4213 | struct bp_location *bl; |
20874c92 | 4214 | struct bp_location *loc; |
5760d0ab JK |
4215 | /* First item of allocated bpstat's. */ |
4216 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4217 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4218 | bpstat bs; |
20874c92 | 4219 | int ix; |
429374b8 | 4220 | int need_remove_insert; |
f431efe5 | 4221 | int removed_any; |
c906108c | 4222 | |
f431efe5 PA |
4223 | /* First, build the bpstat chain with locations that explain a |
4224 | target stop, while being careful to not set the target running, | |
4225 | as that may invalidate locations (in particular watchpoint | |
4226 | locations are recreated). Resuming will happen here with | |
4227 | breakpoint conditions or watchpoint expressions that include | |
4228 | inferior function calls. */ | |
c5aa993b | 4229 | |
429374b8 JK |
4230 | ALL_BREAKPOINTS (b) |
4231 | { | |
4232 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4233 | continue; | |
a5606eee | 4234 | |
429374b8 JK |
4235 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4236 | { | |
4a64f543 MS |
4237 | /* For hardware watchpoints, we look only at the first |
4238 | location. The watchpoint_check function will work on the | |
4239 | entire expression, not the individual locations. For | |
4240 | read watchpoints, the watchpoints_triggered function has | |
4241 | checked all locations already. */ | |
429374b8 JK |
4242 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4243 | break; | |
18a18393 | 4244 | |
429374b8 JK |
4245 | if (bl->shlib_disabled) |
4246 | continue; | |
c5aa993b | 4247 | |
429374b8 JK |
4248 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4249 | continue; | |
c5aa993b | 4250 | |
4a64f543 MS |
4251 | /* Come here if it's a watchpoint, or if the break address |
4252 | matches. */ | |
c5aa993b | 4253 | |
4a64f543 MS |
4254 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4255 | explain stop. */ | |
c5aa993b | 4256 | |
f431efe5 PA |
4257 | /* Assume we stop. Should we find a watchpoint that is not |
4258 | actually triggered, or if the condition of the breakpoint | |
4259 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4260 | bs->stop = 1; |
4261 | bs->print = 1; | |
d983da9c | 4262 | |
f431efe5 PA |
4263 | /* If this is a scope breakpoint, mark the associated |
4264 | watchpoint as triggered so that we will handle the | |
4265 | out-of-scope event. We'll get to the watchpoint next | |
4266 | iteration. */ | |
d0fb5eae | 4267 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
f431efe5 PA |
4268 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; |
4269 | } | |
4270 | } | |
4271 | ||
4272 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4273 | { | |
f1310107 | 4274 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4275 | { |
5760d0ab | 4276 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4277 | /* For hits of moribund locations, we should just proceed. */ |
4278 | bs->stop = 0; | |
4279 | bs->print = 0; | |
4280 | bs->print_it = print_it_noop; | |
4281 | } | |
4282 | } | |
4283 | ||
f431efe5 PA |
4284 | /* Now go through the locations that caused the target to stop, and |
4285 | check whether we're interested in reporting this stop to higher | |
4286 | layers, or whether we should resume the target transparently. */ | |
4287 | ||
4288 | removed_any = 0; | |
4289 | ||
5760d0ab | 4290 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4291 | { |
4292 | if (!bs->stop) | |
4293 | continue; | |
4294 | ||
4295 | bpstat_check_watchpoint (bs); | |
4296 | if (!bs->stop) | |
4297 | continue; | |
4298 | ||
4299 | b = bs->breakpoint_at; | |
18a18393 | 4300 | |
429374b8 | 4301 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4302 | || b->type == bp_longjmp_master |
186c406b TT |
4303 | || b->type == bp_std_terminate_master |
4304 | || b->type == bp_exception_master) | |
429374b8 JK |
4305 | /* We do not stop for these. */ |
4306 | bs->stop = 0; | |
4307 | else | |
4308 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4309 | |
429374b8 JK |
4310 | if (bs->stop) |
4311 | { | |
4312 | ++(b->hit_count); | |
8d3788bd | 4313 | observer_notify_breakpoint_modified (b); |
c906108c | 4314 | |
4a64f543 | 4315 | /* We will stop here. */ |
429374b8 JK |
4316 | if (b->disposition == disp_disable) |
4317 | { | |
4318 | if (b->enable_state != bp_permanent) | |
4319 | b->enable_state = bp_disabled; | |
f431efe5 | 4320 | removed_any = 1; |
429374b8 JK |
4321 | } |
4322 | if (b->silent) | |
4323 | bs->print = 0; | |
4324 | bs->commands = b->commands; | |
9add0f1b TT |
4325 | incref_counted_command_line (bs->commands); |
4326 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4327 | if (bs->commands_left | |
4328 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4329 | || (xdb_commands | |
4330 | && strcmp ("Q", | |
4331 | bs->commands_left->line) == 0))) | |
429374b8 | 4332 | { |
9add0f1b | 4333 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4334 | bs->print = 0; |
4335 | } | |
429374b8 JK |
4336 | } |
4337 | ||
4338 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4339 | if (bs->stop == 0 || bs->print == 0) | |
4340 | bs->print_it = print_it_noop; | |
429374b8 | 4341 | } |
876fa593 | 4342 | |
d983da9c DJ |
4343 | /* If we aren't stopping, the value of some hardware watchpoint may |
4344 | not have changed, but the intermediate memory locations we are | |
4345 | watching may have. Don't bother if we're stopping; this will get | |
4346 | done later. */ | |
d832cb68 | 4347 | need_remove_insert = 0; |
5760d0ab JK |
4348 | if (! bpstat_causes_stop (bs_head)) |
4349 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4350 | if (!bs->stop |
f431efe5 PA |
4351 | && bs->breakpoint_at |
4352 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4353 | { |
4a64f543 | 4354 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4355 | need_remove_insert = 1; |
d983da9c DJ |
4356 | } |
4357 | ||
d832cb68 | 4358 | if (need_remove_insert) |
2d134ed3 | 4359 | update_global_location_list (1); |
f431efe5 PA |
4360 | else if (removed_any) |
4361 | update_global_location_list (0); | |
d832cb68 | 4362 | |
5760d0ab | 4363 | return bs_head; |
c906108c | 4364 | } |
628fe4e4 JK |
4365 | |
4366 | static void | |
4367 | handle_jit_event (void) | |
4368 | { | |
4369 | struct frame_info *frame; | |
4370 | struct gdbarch *gdbarch; | |
4371 | ||
4372 | /* Switch terminal for any messages produced by | |
4373 | breakpoint_re_set. */ | |
4374 | target_terminal_ours_for_output (); | |
4375 | ||
4376 | frame = get_current_frame (); | |
4377 | gdbarch = get_frame_arch (frame); | |
4378 | ||
4379 | jit_event_handler (gdbarch); | |
4380 | ||
4381 | target_terminal_inferior (); | |
4382 | } | |
4383 | ||
4384 | /* Prepare WHAT final decision for infrun. */ | |
4385 | ||
4386 | /* Decide what infrun needs to do with this bpstat. */ | |
4387 | ||
c906108c | 4388 | struct bpstat_what |
0e30163f | 4389 | bpstat_what (bpstat bs_head) |
c906108c | 4390 | { |
c906108c | 4391 | struct bpstat_what retval; |
628fe4e4 JK |
4392 | /* We need to defer calling `solib_add', as adding new symbols |
4393 | resets breakpoints, which in turn deletes breakpoint locations, | |
4394 | and hence may clear unprocessed entries in the BS chain. */ | |
4395 | int shlib_event = 0; | |
4396 | int jit_event = 0; | |
0e30163f | 4397 | bpstat bs; |
c906108c | 4398 | |
628fe4e4 | 4399 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4400 | retval.call_dummy = STOP_NONE; |
186c406b | 4401 | retval.is_longjmp = 0; |
628fe4e4 | 4402 | |
0e30163f | 4403 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4404 | { |
628fe4e4 JK |
4405 | /* Extract this BS's action. After processing each BS, we check |
4406 | if its action overrides all we've seem so far. */ | |
4407 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4408 | enum bptype bptype; | |
4409 | ||
c906108c | 4410 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4411 | { |
4412 | /* I suspect this can happen if it was a momentary | |
4413 | breakpoint which has since been deleted. */ | |
4414 | bptype = bp_none; | |
4415 | } | |
f431efe5 | 4416 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4417 | bptype = bp_none; |
20874c92 | 4418 | else |
f431efe5 | 4419 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4420 | |
4421 | switch (bptype) | |
c906108c SS |
4422 | { |
4423 | case bp_none: | |
628fe4e4 | 4424 | break; |
c906108c SS |
4425 | case bp_breakpoint: |
4426 | case bp_hardware_breakpoint: | |
4427 | case bp_until: | |
4428 | case bp_finish: | |
4429 | if (bs->stop) | |
4430 | { | |
4431 | if (bs->print) | |
628fe4e4 | 4432 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4433 | else |
628fe4e4 | 4434 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4435 | } |
4436 | else | |
628fe4e4 | 4437 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4438 | break; |
4439 | case bp_watchpoint: | |
4440 | case bp_hardware_watchpoint: | |
4441 | case bp_read_watchpoint: | |
4442 | case bp_access_watchpoint: | |
4443 | if (bs->stop) | |
4444 | { | |
4445 | if (bs->print) | |
628fe4e4 | 4446 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4447 | else |
628fe4e4 | 4448 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4449 | } |
4450 | else | |
628fe4e4 JK |
4451 | { |
4452 | /* There was a watchpoint, but we're not stopping. | |
4453 | This requires no further action. */ | |
4454 | } | |
c906108c SS |
4455 | break; |
4456 | case bp_longjmp: | |
186c406b | 4457 | case bp_exception: |
628fe4e4 | 4458 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4459 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4460 | break; |
4461 | case bp_longjmp_resume: | |
186c406b | 4462 | case bp_exception_resume: |
628fe4e4 | 4463 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4464 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4465 | break; |
4466 | case bp_step_resume: | |
4467 | if (bs->stop) | |
628fe4e4 JK |
4468 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4469 | else | |
c906108c | 4470 | { |
628fe4e4 JK |
4471 | /* It is for the wrong frame. */ |
4472 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4473 | } |
c906108c | 4474 | break; |
c906108c | 4475 | case bp_watchpoint_scope: |
c4093a6a | 4476 | case bp_thread_event: |
1900040c | 4477 | case bp_overlay_event: |
0fd8e87f | 4478 | case bp_longjmp_master: |
aa7d318d | 4479 | case bp_std_terminate_master: |
186c406b | 4480 | case bp_exception_master: |
628fe4e4 | 4481 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4482 | break; |
ce78b96d | 4483 | case bp_catchpoint: |
c5aa993b JM |
4484 | if (bs->stop) |
4485 | { | |
4486 | if (bs->print) | |
628fe4e4 | 4487 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4488 | else |
628fe4e4 | 4489 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4490 | } |
4491 | else | |
628fe4e4 JK |
4492 | { |
4493 | /* There was a catchpoint, but we're not stopping. | |
4494 | This requires no further action. */ | |
4495 | } | |
4496 | break; | |
4497 | case bp_shlib_event: | |
4498 | shlib_event = 1; | |
4499 | ||
4500 | /* If requested, stop when the dynamic linker notifies GDB | |
4501 | of events. This allows the user to get control and place | |
4502 | breakpoints in initializer routines for dynamically | |
4503 | loaded objects (among other things). */ | |
4504 | if (stop_on_solib_events) | |
4505 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4506 | else | |
4507 | this_action = BPSTAT_WHAT_SINGLE; | |
4508 | break; | |
4509 | case bp_jit_event: | |
4510 | jit_event = 1; | |
4511 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4512 | break; |
c906108c | 4513 | case bp_call_dummy: |
53a5351d JM |
4514 | /* Make sure the action is stop (silent or noisy), |
4515 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4516 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4517 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4518 | break; |
4519 | case bp_std_terminate: | |
4520 | /* Make sure the action is stop (silent or noisy), | |
4521 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4522 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4523 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4524 | break; |
1042e4c0 | 4525 | case bp_tracepoint: |
7a697b8d | 4526 | case bp_fast_tracepoint: |
0fb4aa4b | 4527 | case bp_static_tracepoint: |
1042e4c0 SS |
4528 | /* Tracepoint hits should not be reported back to GDB, and |
4529 | if one got through somehow, it should have been filtered | |
4530 | out already. */ | |
4531 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4532 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4533 | break; |
4534 | case bp_gnu_ifunc_resolver: | |
4535 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4536 | this_action = BPSTAT_WHAT_SINGLE; | |
4537 | break; | |
4538 | case bp_gnu_ifunc_resolver_return: | |
4539 | /* The breakpoint will be removed, execution will restart from the | |
4540 | PC of the former breakpoint. */ | |
4541 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4542 | break; | |
628fe4e4 JK |
4543 | default: |
4544 | internal_error (__FILE__, __LINE__, | |
4545 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4546 | } |
628fe4e4 JK |
4547 | |
4548 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4549 | } |
628fe4e4 | 4550 | |
0e30163f JK |
4551 | /* These operations may affect the bs->breakpoint_at state so they are |
4552 | delayed after MAIN_ACTION is decided above. */ | |
4553 | ||
628fe4e4 JK |
4554 | if (shlib_event) |
4555 | { | |
4556 | if (debug_infrun) | |
4557 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4558 | ||
4559 | /* Check for any newly added shared libraries if we're supposed | |
4560 | to be adding them automatically. */ | |
4561 | ||
4562 | /* Switch terminal for any messages produced by | |
4563 | breakpoint_re_set. */ | |
4564 | target_terminal_ours_for_output (); | |
4565 | ||
4566 | #ifdef SOLIB_ADD | |
4567 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4568 | #else | |
4569 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4570 | #endif | |
4571 | ||
4572 | target_terminal_inferior (); | |
4573 | } | |
4574 | ||
4575 | if (jit_event) | |
4576 | { | |
4577 | if (debug_infrun) | |
4578 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4579 | ||
4580 | handle_jit_event (); | |
4581 | } | |
4582 | ||
0e30163f JK |
4583 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4584 | { | |
4585 | struct breakpoint *b = bs->breakpoint_at; | |
4586 | ||
4587 | if (b == NULL) | |
4588 | continue; | |
4589 | switch (b->type) | |
4590 | { | |
4591 | case bp_gnu_ifunc_resolver: | |
4592 | gnu_ifunc_resolver_stop (b); | |
4593 | break; | |
4594 | case bp_gnu_ifunc_resolver_return: | |
4595 | gnu_ifunc_resolver_return_stop (b); | |
4596 | break; | |
4597 | } | |
4598 | } | |
4599 | ||
c906108c SS |
4600 | return retval; |
4601 | } | |
4602 | ||
4603 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4604 | without hardware support). This isn't related to a specific bpstat, | |
4605 | just to things like whether watchpoints are set. */ | |
4606 | ||
c5aa993b | 4607 | int |
fba45db2 | 4608 | bpstat_should_step (void) |
c906108c SS |
4609 | { |
4610 | struct breakpoint *b; | |
cc59ec59 | 4611 | |
c906108c | 4612 | ALL_BREAKPOINTS (b) |
717a8278 | 4613 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4614 | return 1; |
c906108c SS |
4615 | return 0; |
4616 | } | |
4617 | ||
67822962 PA |
4618 | int |
4619 | bpstat_causes_stop (bpstat bs) | |
4620 | { | |
4621 | for (; bs != NULL; bs = bs->next) | |
4622 | if (bs->stop) | |
4623 | return 1; | |
4624 | ||
4625 | return 0; | |
4626 | } | |
4627 | ||
c906108c | 4628 | \f |
c5aa993b | 4629 | |
170b53b2 UW |
4630 | /* Compute a string of spaces suitable to indent the next line |
4631 | so it starts at the position corresponding to the table column | |
4632 | named COL_NAME in the currently active table of UIOUT. */ | |
4633 | ||
4634 | static char * | |
4635 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4636 | { | |
4637 | static char wrap_indent[80]; | |
4638 | int i, total_width, width, align; | |
4639 | char *text; | |
4640 | ||
4641 | total_width = 0; | |
4642 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4643 | { | |
4644 | if (strcmp (text, col_name) == 0) | |
4645 | { | |
4646 | gdb_assert (total_width < sizeof wrap_indent); | |
4647 | memset (wrap_indent, ' ', total_width); | |
4648 | wrap_indent[total_width] = 0; | |
4649 | ||
4650 | return wrap_indent; | |
4651 | } | |
4652 | ||
4653 | total_width += width + 1; | |
4654 | } | |
4655 | ||
4656 | return NULL; | |
4657 | } | |
4658 | ||
859825b8 JK |
4659 | /* Print the LOC location out of the list of B->LOC locations. */ |
4660 | ||
170b53b2 UW |
4661 | static void |
4662 | print_breakpoint_location (struct breakpoint *b, | |
4663 | struct bp_location *loc) | |
0d381245 | 4664 | { |
6c95b8df PA |
4665 | struct cleanup *old_chain = save_current_program_space (); |
4666 | ||
859825b8 JK |
4667 | if (loc != NULL && loc->shlib_disabled) |
4668 | loc = NULL; | |
4669 | ||
6c95b8df PA |
4670 | if (loc != NULL) |
4671 | set_current_program_space (loc->pspace); | |
4672 | ||
56435ebe TT |
4673 | if (b->display_canonical) |
4674 | ui_out_field_string (uiout, "what", b->addr_string); | |
4675 | else if (b->source_file && loc) | |
0d381245 VP |
4676 | { |
4677 | struct symbol *sym | |
4678 | = find_pc_sect_function (loc->address, loc->section); | |
4679 | if (sym) | |
4680 | { | |
4681 | ui_out_text (uiout, "in "); | |
4682 | ui_out_field_string (uiout, "func", | |
4683 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4684 | ui_out_text (uiout, " "); |
4685 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4686 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4687 | } |
4688 | ui_out_field_string (uiout, "file", b->source_file); | |
4689 | ui_out_text (uiout, ":"); | |
4690 | ||
4691 | if (ui_out_is_mi_like_p (uiout)) | |
4692 | { | |
4693 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4694 | char *fullname = symtab_to_fullname (sal.symtab); | |
4695 | ||
4696 | if (fullname) | |
4697 | ui_out_field_string (uiout, "fullname", fullname); | |
4698 | } | |
4699 | ||
4700 | ui_out_field_int (uiout, "line", b->line_number); | |
4701 | } | |
859825b8 | 4702 | else if (loc) |
0d381245 | 4703 | { |
170b53b2 UW |
4704 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4705 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4706 | ||
22e722e1 DJ |
4707 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4708 | demangle, ""); | |
0d381245 | 4709 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4710 | |
4711 | do_cleanups (stb_chain); | |
0d381245 | 4712 | } |
859825b8 JK |
4713 | else |
4714 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4715 | |
4716 | do_cleanups (old_chain); | |
0d381245 VP |
4717 | } |
4718 | ||
269b11a2 PA |
4719 | static const char * |
4720 | bptype_string (enum bptype type) | |
c906108c | 4721 | { |
c4093a6a JM |
4722 | struct ep_type_description |
4723 | { | |
4724 | enum bptype type; | |
4725 | char *description; | |
4726 | }; | |
4727 | static struct ep_type_description bptypes[] = | |
c906108c | 4728 | { |
c5aa993b JM |
4729 | {bp_none, "?deleted?"}, |
4730 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4731 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4732 | {bp_until, "until"}, |
4733 | {bp_finish, "finish"}, | |
4734 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4735 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4736 | {bp_read_watchpoint, "read watchpoint"}, |
4737 | {bp_access_watchpoint, "acc watchpoint"}, | |
4738 | {bp_longjmp, "longjmp"}, | |
4739 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4740 | {bp_exception, "exception"}, |
4741 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4742 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4743 | {bp_watchpoint_scope, "watchpoint scope"}, |
4744 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4745 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4746 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4747 | {bp_thread_event, "thread events"}, |
1900040c | 4748 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4749 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4750 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4751 | {bp_exception_master, "exception master"}, |
ce78b96d | 4752 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4753 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4754 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4755 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4756 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4757 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4758 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4759 | }; |
269b11a2 PA |
4760 | |
4761 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4762 | || ((int) type != bptypes[(int) type].type)) | |
4763 | internal_error (__FILE__, __LINE__, | |
4764 | _("bptypes table does not describe type #%d."), | |
4765 | (int) type); | |
4766 | ||
4767 | return bptypes[(int) type].description; | |
4768 | } | |
4769 | ||
4770 | /* Print B to gdb_stdout. */ | |
4771 | ||
4772 | static void | |
4773 | print_one_breakpoint_location (struct breakpoint *b, | |
4774 | struct bp_location *loc, | |
4775 | int loc_number, | |
4776 | struct bp_location **last_loc, | |
269b11a2 PA |
4777 | int allflag) |
4778 | { | |
4779 | struct command_line *l; | |
c2c6d25f | 4780 | static char bpenables[] = "nynny"; |
c906108c | 4781 | |
0d381245 VP |
4782 | int header_of_multiple = 0; |
4783 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4784 | struct value_print_options opts; |
4785 | ||
4786 | get_user_print_options (&opts); | |
0d381245 VP |
4787 | |
4788 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4789 | /* See comment in print_one_breakpoint concerning treatment of |
4790 | breakpoints with single disabled location. */ | |
0d381245 VP |
4791 | if (loc == NULL |
4792 | && (b->loc != NULL | |
4793 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4794 | header_of_multiple = 1; | |
4795 | if (loc == NULL) | |
4796 | loc = b->loc; | |
4797 | ||
c4093a6a JM |
4798 | annotate_record (); |
4799 | ||
4800 | /* 1 */ | |
4801 | annotate_field (0); | |
0d381245 VP |
4802 | if (part_of_multiple) |
4803 | { | |
4804 | char *formatted; | |
0c6773c1 | 4805 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4806 | ui_out_field_string (uiout, "number", formatted); |
4807 | xfree (formatted); | |
4808 | } | |
4809 | else | |
4810 | { | |
4811 | ui_out_field_int (uiout, "number", b->number); | |
4812 | } | |
c4093a6a JM |
4813 | |
4814 | /* 2 */ | |
4815 | annotate_field (1); | |
0d381245 VP |
4816 | if (part_of_multiple) |
4817 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4818 | else |
4819 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4820 | |
4821 | /* 3 */ | |
4822 | annotate_field (2); | |
0d381245 VP |
4823 | if (part_of_multiple) |
4824 | ui_out_field_skip (uiout, "disp"); | |
4825 | else | |
2cec12e5 | 4826 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4827 | |
c4093a6a JM |
4828 | |
4829 | /* 4 */ | |
4830 | annotate_field (3); | |
0d381245 | 4831 | if (part_of_multiple) |
54e52265 | 4832 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4833 | else |
4a64f543 MS |
4834 | ui_out_field_fmt (uiout, "enabled", "%c", |
4835 | bpenables[(int) b->enable_state]); | |
54e52265 | 4836 | ui_out_spaces (uiout, 2); |
0d381245 | 4837 | |
c4093a6a JM |
4838 | |
4839 | /* 5 and 6 */ | |
3086aeae | 4840 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4841 | { |
4a64f543 MS |
4842 | /* Although the print_one can possibly print all locations, |
4843 | calling it here is not likely to get any nice result. So, | |
4844 | make sure there's just one location. */ | |
0d381245 | 4845 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4846 | b->ops->print_one (b, last_loc); |
0d381245 | 4847 | } |
3086aeae DJ |
4848 | else |
4849 | switch (b->type) | |
4850 | { | |
4851 | case bp_none: | |
4852 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4853 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4854 | break; |
c906108c | 4855 | |
3086aeae DJ |
4856 | case bp_watchpoint: |
4857 | case bp_hardware_watchpoint: | |
4858 | case bp_read_watchpoint: | |
4859 | case bp_access_watchpoint: | |
4860 | /* Field 4, the address, is omitted (which makes the columns | |
4861 | not line up too nicely with the headers, but the effect | |
4862 | is relatively readable). */ | |
79a45b7d | 4863 | if (opts.addressprint) |
3086aeae DJ |
4864 | ui_out_field_skip (uiout, "addr"); |
4865 | annotate_field (5); | |
fa8a61dc | 4866 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4867 | break; |
4868 | ||
3086aeae DJ |
4869 | case bp_breakpoint: |
4870 | case bp_hardware_breakpoint: | |
4871 | case bp_until: | |
4872 | case bp_finish: | |
4873 | case bp_longjmp: | |
4874 | case bp_longjmp_resume: | |
186c406b TT |
4875 | case bp_exception: |
4876 | case bp_exception_resume: | |
3086aeae | 4877 | case bp_step_resume: |
3086aeae DJ |
4878 | case bp_watchpoint_scope: |
4879 | case bp_call_dummy: | |
aa7d318d | 4880 | case bp_std_terminate: |
3086aeae DJ |
4881 | case bp_shlib_event: |
4882 | case bp_thread_event: | |
4883 | case bp_overlay_event: | |
0fd8e87f | 4884 | case bp_longjmp_master: |
aa7d318d | 4885 | case bp_std_terminate_master: |
186c406b | 4886 | case bp_exception_master: |
1042e4c0 | 4887 | case bp_tracepoint: |
7a697b8d | 4888 | case bp_fast_tracepoint: |
0fb4aa4b | 4889 | case bp_static_tracepoint: |
4efc6507 | 4890 | case bp_jit_event: |
0e30163f JK |
4891 | case bp_gnu_ifunc_resolver: |
4892 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4893 | if (opts.addressprint) |
3086aeae DJ |
4894 | { |
4895 | annotate_field (4); | |
54e52265 | 4896 | if (header_of_multiple) |
0d381245 | 4897 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4898 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4899 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4900 | else |
5af949e3 UW |
4901 | ui_out_field_core_addr (uiout, "addr", |
4902 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4903 | } |
4904 | annotate_field (5); | |
0d381245 | 4905 | if (!header_of_multiple) |
170b53b2 | 4906 | print_breakpoint_location (b, loc); |
0d381245 | 4907 | if (b->loc) |
a6d9a66e | 4908 | *last_loc = b->loc; |
3086aeae DJ |
4909 | break; |
4910 | } | |
c906108c | 4911 | |
6c95b8df PA |
4912 | |
4913 | /* For backward compatibility, don't display inferiors unless there | |
4914 | are several. */ | |
4915 | if (loc != NULL | |
4916 | && !header_of_multiple | |
4917 | && (allflag | |
4918 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4919 | && (number_of_program_spaces () > 1 | |
4920 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4921 | /* LOC is for existing B, it cannot be in |
4922 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4923 | && loc->owner->type != bp_catchpoint))) |
4924 | { | |
4925 | struct inferior *inf; | |
4926 | int first = 1; | |
4927 | ||
4928 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4929 | { | |
4930 | if (inf->pspace == loc->pspace) | |
4931 | { | |
4932 | if (first) | |
4933 | { | |
4934 | first = 0; | |
4935 | ui_out_text (uiout, " inf "); | |
4936 | } | |
4937 | else | |
4938 | ui_out_text (uiout, ", "); | |
4939 | ui_out_text (uiout, plongest (inf->num)); | |
4940 | } | |
4941 | } | |
4942 | } | |
4943 | ||
4a306c9a | 4944 | if (!part_of_multiple) |
c4093a6a | 4945 | { |
4a306c9a JB |
4946 | if (b->thread != -1) |
4947 | { | |
4948 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4949 | "stop only in" line a little further down. */ |
4a306c9a JB |
4950 | ui_out_text (uiout, " thread "); |
4951 | ui_out_field_int (uiout, "thread", b->thread); | |
4952 | } | |
4953 | else if (b->task != 0) | |
4954 | { | |
4955 | ui_out_text (uiout, " task "); | |
4956 | ui_out_field_int (uiout, "task", b->task); | |
4957 | } | |
c4093a6a | 4958 | } |
f1310107 | 4959 | |
8b93c638 | 4960 | ui_out_text (uiout, "\n"); |
f1310107 TJB |
4961 | |
4962 | if (!part_of_multiple && b->ops && b->ops->print_one_detail) | |
4963 | b->ops->print_one_detail (b, uiout); | |
4964 | ||
0fb4aa4b PA |
4965 | if (!part_of_multiple && b->static_trace_marker_id) |
4966 | { | |
4967 | gdb_assert (b->type == bp_static_tracepoint); | |
4968 | ||
4969 | ui_out_text (uiout, "\tmarker id is "); | |
4970 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4971 | b->static_trace_marker_id); | |
4972 | ui_out_text (uiout, "\n"); | |
4973 | } | |
4974 | ||
0d381245 | 4975 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4976 | { |
4977 | annotate_field (6); | |
8b93c638 | 4978 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4979 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4980 | the frame ID. */ | |
5af949e3 UW |
4981 | ui_out_field_core_addr (uiout, "frame", |
4982 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4983 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4984 | } |
4985 | ||
0d381245 | 4986 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4987 | { |
f7f9143b JB |
4988 | /* We do not print the condition for Ada exception catchpoints |
4989 | because the condition is an internal implementation detail | |
4990 | that we do not want to expose to the user. */ | |
c4093a6a | 4991 | annotate_field (7); |
d77f58be | 4992 | if (is_tracepoint (b)) |
1042e4c0 SS |
4993 | ui_out_text (uiout, "\ttrace only if "); |
4994 | else | |
4995 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4996 | ui_out_field_string (uiout, "cond", b->cond_string); |
4997 | ui_out_text (uiout, "\n"); | |
4998 | } | |
4999 | ||
0d381245 | 5000 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 5001 | { |
4a64f543 | 5002 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5003 | ui_out_text (uiout, "\tstop only in thread "); |
5004 | ui_out_field_int (uiout, "thread", b->thread); | |
5005 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
5006 | } |
5007 | ||
63c715c6 | 5008 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 5009 | { |
4a64f543 | 5010 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5011 | if (ep_is_catchpoint (b)) |
5012 | ui_out_text (uiout, "\tcatchpoint"); | |
5013 | else | |
5014 | ui_out_text (uiout, "\tbreakpoint"); | |
5015 | ui_out_text (uiout, " already hit "); | |
5016 | ui_out_field_int (uiout, "times", b->hit_count); | |
5017 | if (b->hit_count == 1) | |
5018 | ui_out_text (uiout, " time\n"); | |
5019 | else | |
5020 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
5021 | } |
5022 | ||
4a64f543 MS |
5023 | /* Output the count also if it is zero, but only if this is mi. |
5024 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 5025 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 5026 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 5027 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 5028 | |
0d381245 | 5029 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
5030 | { |
5031 | annotate_field (8); | |
8b93c638 JM |
5032 | ui_out_text (uiout, "\tignore next "); |
5033 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
5034 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 5035 | } |
059fb39f | 5036 | |
9add0f1b | 5037 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 5038 | if (!part_of_multiple && l) |
c4093a6a | 5039 | { |
3b31d625 EZ |
5040 | struct cleanup *script_chain; |
5041 | ||
c4093a6a | 5042 | annotate_field (9); |
3b31d625 | 5043 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 5044 | print_command_lines (uiout, l, 4); |
3b31d625 | 5045 | do_cleanups (script_chain); |
c4093a6a | 5046 | } |
d24317b4 | 5047 | |
1042e4c0 SS |
5048 | if (!part_of_multiple && b->pass_count) |
5049 | { | |
5050 | annotate_field (10); | |
5051 | ui_out_text (uiout, "\tpass count "); | |
5052 | ui_out_field_int (uiout, "pass", b->pass_count); | |
5053 | ui_out_text (uiout, " \n"); | |
5054 | } | |
5055 | ||
d24317b4 VP |
5056 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
5057 | { | |
5058 | if (b->addr_string) | |
5059 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
5060 | else if (b->exp_string) | |
5061 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
5062 | } | |
c4093a6a | 5063 | } |
c5aa993b | 5064 | |
0d381245 VP |
5065 | static void |
5066 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5067 | struct bp_location **last_loc, |
6c95b8df | 5068 | int allflag) |
0d381245 | 5069 | { |
8d3788bd VP |
5070 | struct cleanup *bkpt_chain; |
5071 | ||
5072 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
5073 | ||
12c5a436 | 5074 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 5075 | do_cleanups (bkpt_chain); |
0d381245 VP |
5076 | |
5077 | /* If this breakpoint has custom print function, | |
5078 | it's already printed. Otherwise, print individual | |
5079 | locations, if any. */ | |
5080 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5081 | { | |
4a64f543 MS |
5082 | /* If breakpoint has a single location that is disabled, we |
5083 | print it as if it had several locations, since otherwise it's | |
5084 | hard to represent "breakpoint enabled, location disabled" | |
5085 | situation. | |
5086 | ||
5087 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5088 | internally, that's not a property exposed to user. */ |
0d381245 | 5089 | if (b->loc |
a5606eee | 5090 | && !is_hardware_watchpoint (b) |
8d3788bd | 5091 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5092 | { |
5093 | struct bp_location *loc; | |
5094 | int n = 1; | |
8d3788bd | 5095 | |
0d381245 | 5096 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5097 | { |
5098 | struct cleanup *inner2 = | |
5099 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5100 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5101 | do_cleanups (inner2); | |
5102 | } | |
0d381245 VP |
5103 | } |
5104 | } | |
5105 | } | |
5106 | ||
a6d9a66e UW |
5107 | static int |
5108 | breakpoint_address_bits (struct breakpoint *b) | |
5109 | { | |
5110 | int print_address_bits = 0; | |
5111 | struct bp_location *loc; | |
5112 | ||
5113 | for (loc = b->loc; loc; loc = loc->next) | |
5114 | { | |
c7437ca6 PA |
5115 | int addr_bit; |
5116 | ||
5117 | /* Software watchpoints that aren't watching memory don't have | |
5118 | an address to print. */ | |
5119 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5120 | continue; | |
5121 | ||
5122 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5123 | if (addr_bit > print_address_bits) |
5124 | print_address_bits = addr_bit; | |
5125 | } | |
5126 | ||
5127 | return print_address_bits; | |
5128 | } | |
0d381245 | 5129 | |
c4093a6a JM |
5130 | struct captured_breakpoint_query_args |
5131 | { | |
5132 | int bnum; | |
5133 | }; | |
c5aa993b | 5134 | |
c4093a6a | 5135 | static int |
2b65245e | 5136 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5137 | { |
5138 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5139 | struct breakpoint *b; |
a6d9a66e | 5140 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5141 | |
c4093a6a JM |
5142 | ALL_BREAKPOINTS (b) |
5143 | { | |
5144 | if (args->bnum == b->number) | |
c5aa993b | 5145 | { |
12c5a436 | 5146 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5147 | return GDB_RC_OK; |
c5aa993b | 5148 | } |
c4093a6a JM |
5149 | } |
5150 | return GDB_RC_NONE; | |
5151 | } | |
c5aa993b | 5152 | |
c4093a6a | 5153 | enum gdb_rc |
4a64f543 MS |
5154 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5155 | char **error_message) | |
c4093a6a JM |
5156 | { |
5157 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5158 | |
c4093a6a JM |
5159 | args.bnum = bnum; |
5160 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5161 | an error. */ |
b0b13bb4 DJ |
5162 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5163 | error_message, RETURN_MASK_ALL) < 0) | |
5164 | return GDB_RC_FAIL; | |
5165 | else | |
5166 | return GDB_RC_OK; | |
c4093a6a | 5167 | } |
c5aa993b | 5168 | |
09d682a4 TT |
5169 | /* Return true if this breakpoint was set by the user, false if it is |
5170 | internal or momentary. */ | |
5171 | ||
5172 | int | |
5173 | user_breakpoint_p (struct breakpoint *b) | |
5174 | { | |
46c6471b | 5175 | return b->number > 0; |
09d682a4 TT |
5176 | } |
5177 | ||
7f3b0473 | 5178 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5179 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5180 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5181 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5182 | ones for which it returns non-zero. Return the total number of | |
5183 | breakpoints listed. */ | |
c906108c | 5184 | |
d77f58be | 5185 | static int |
e5a67952 | 5186 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5187 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5188 | { |
52f0bd74 | 5189 | struct breakpoint *b; |
a6d9a66e | 5190 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5191 | int nr_printable_breakpoints; |
3b31d625 | 5192 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5193 | struct value_print_options opts; |
a6d9a66e | 5194 | int print_address_bits = 0; |
269b11a2 PA |
5195 | int print_type_col_width = 14; |
5196 | ||
79a45b7d TT |
5197 | get_user_print_options (&opts); |
5198 | ||
4a64f543 MS |
5199 | /* Compute the number of rows in the table, as well as the size |
5200 | required for address fields. */ | |
7f3b0473 AC |
5201 | nr_printable_breakpoints = 0; |
5202 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5203 | { |
5204 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5205 | if (filter && !filter (b)) | |
5206 | continue; | |
5207 | ||
5208 | /* If we have an "args" string, it is a list of breakpoints to | |
5209 | accept. Skip the others. */ | |
5210 | if (args != NULL && *args != '\0') | |
5211 | { | |
5212 | if (allflag && parse_and_eval_long (args) != b->number) | |
5213 | continue; | |
5214 | if (!allflag && !number_is_in_list (args, b->number)) | |
5215 | continue; | |
5216 | } | |
269b11a2 | 5217 | |
e5a67952 MS |
5218 | if (allflag || user_breakpoint_p (b)) |
5219 | { | |
5220 | int addr_bit, type_len; | |
a6d9a66e | 5221 | |
e5a67952 MS |
5222 | addr_bit = breakpoint_address_bits (b); |
5223 | if (addr_bit > print_address_bits) | |
5224 | print_address_bits = addr_bit; | |
269b11a2 | 5225 | |
e5a67952 MS |
5226 | type_len = strlen (bptype_string (b->type)); |
5227 | if (type_len > print_type_col_width) | |
5228 | print_type_col_width = type_len; | |
5229 | ||
5230 | nr_printable_breakpoints++; | |
5231 | } | |
5232 | } | |
7f3b0473 | 5233 | |
79a45b7d | 5234 | if (opts.addressprint) |
3b31d625 | 5235 | bkpttbl_chain |
3e43a32a MS |
5236 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5237 | nr_printable_breakpoints, | |
3b31d625 | 5238 | "BreakpointTable"); |
8b93c638 | 5239 | else |
3b31d625 | 5240 | bkpttbl_chain |
3e43a32a MS |
5241 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5242 | nr_printable_breakpoints, | |
3b31d625 | 5243 | "BreakpointTable"); |
8b93c638 | 5244 | |
7f3b0473 | 5245 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5246 | annotate_breakpoints_headers (); |
5247 | if (nr_printable_breakpoints > 0) | |
5248 | annotate_field (0); | |
4a64f543 | 5249 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5250 | if (nr_printable_breakpoints > 0) |
5251 | annotate_field (1); | |
269b11a2 | 5252 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5253 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5254 | if (nr_printable_breakpoints > 0) |
5255 | annotate_field (2); | |
4a64f543 | 5256 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5257 | if (nr_printable_breakpoints > 0) |
5258 | annotate_field (3); | |
54e52265 | 5259 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5260 | if (opts.addressprint) |
e5a67952 MS |
5261 | { |
5262 | if (nr_printable_breakpoints > 0) | |
5263 | annotate_field (4); | |
5264 | if (print_address_bits <= 32) | |
5265 | ui_out_table_header (uiout, 10, ui_left, | |
5266 | "addr", "Address"); /* 5 */ | |
5267 | else | |
5268 | ui_out_table_header (uiout, 18, ui_left, | |
5269 | "addr", "Address"); /* 5 */ | |
5270 | } | |
d7faa9e7 AC |
5271 | if (nr_printable_breakpoints > 0) |
5272 | annotate_field (5); | |
5273 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5274 | ui_out_table_body (uiout); | |
5275 | if (nr_printable_breakpoints > 0) | |
5276 | annotate_breakpoints_table (); | |
7f3b0473 | 5277 | |
c4093a6a | 5278 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5279 | { |
5280 | QUIT; | |
5281 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5282 | if (filter && !filter (b)) | |
5283 | continue; | |
5284 | ||
5285 | /* If we have an "args" string, it is a list of breakpoints to | |
5286 | accept. Skip the others. */ | |
5287 | ||
5288 | if (args != NULL && *args != '\0') | |
5289 | { | |
5290 | if (allflag) /* maintenance info breakpoint */ | |
5291 | { | |
5292 | if (parse_and_eval_long (args) != b->number) | |
5293 | continue; | |
5294 | } | |
5295 | else /* all others */ | |
5296 | { | |
5297 | if (!number_is_in_list (args, b->number)) | |
5298 | continue; | |
5299 | } | |
5300 | } | |
5301 | /* We only print out user settable breakpoints unless the | |
5302 | allflag is set. */ | |
5303 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5304 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5305 | } |
5306 | ||
3b31d625 | 5307 | do_cleanups (bkpttbl_chain); |
698384cd | 5308 | |
7f3b0473 | 5309 | if (nr_printable_breakpoints == 0) |
c906108c | 5310 | { |
4a64f543 MS |
5311 | /* If there's a filter, let the caller decide how to report |
5312 | empty list. */ | |
d77f58be SS |
5313 | if (!filter) |
5314 | { | |
e5a67952 | 5315 | if (args == NULL || *args == '\0') |
d77f58be SS |
5316 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5317 | else | |
4a64f543 | 5318 | ui_out_message (uiout, 0, |
e5a67952 MS |
5319 | "No breakpoint or watchpoint matching '%s'.\n", |
5320 | args); | |
d77f58be | 5321 | } |
c906108c SS |
5322 | } |
5323 | else | |
c4093a6a | 5324 | { |
a6d9a66e UW |
5325 | if (last_loc && !server_command) |
5326 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5327 | } |
c906108c | 5328 | |
4a64f543 | 5329 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5330 | there have been breakpoints? */ |
c906108c | 5331 | annotate_breakpoints_table_end (); |
d77f58be SS |
5332 | |
5333 | return nr_printable_breakpoints; | |
c906108c SS |
5334 | } |
5335 | ||
ad443146 SS |
5336 | /* Display the value of default-collect in a way that is generally |
5337 | compatible with the breakpoint list. */ | |
5338 | ||
5339 | static void | |
5340 | default_collect_info (void) | |
5341 | { | |
5342 | /* If it has no value (which is frequently the case), say nothing; a | |
5343 | message like "No default-collect." gets in user's face when it's | |
5344 | not wanted. */ | |
5345 | if (!*default_collect) | |
5346 | return; | |
5347 | ||
5348 | /* The following phrase lines up nicely with per-tracepoint collect | |
5349 | actions. */ | |
5350 | ui_out_text (uiout, "default collect "); | |
5351 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5352 | ui_out_text (uiout, " \n"); | |
5353 | } | |
5354 | ||
c906108c | 5355 | static void |
e5a67952 | 5356 | breakpoints_info (char *args, int from_tty) |
c906108c | 5357 | { |
e5a67952 | 5358 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5359 | |
5360 | default_collect_info (); | |
d77f58be SS |
5361 | } |
5362 | ||
5363 | static void | |
e5a67952 | 5364 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5365 | { |
e5a67952 | 5366 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
d77f58be SS |
5367 | |
5368 | if (num_printed == 0) | |
5369 | { | |
e5a67952 | 5370 | if (args == NULL || *args == '\0') |
d77f58be SS |
5371 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5372 | else | |
e5a67952 | 5373 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5374 | } |
c906108c SS |
5375 | } |
5376 | ||
7a292a7a | 5377 | static void |
e5a67952 | 5378 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5379 | { |
e5a67952 | 5380 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5381 | |
5382 | default_collect_info (); | |
c906108c SS |
5383 | } |
5384 | ||
0d381245 | 5385 | static int |
714835d5 | 5386 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5387 | struct program_space *pspace, |
714835d5 | 5388 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5389 | { |
5390 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5391 | |
0d381245 VP |
5392 | for (; bl; bl = bl->next) |
5393 | { | |
6c95b8df PA |
5394 | if (bl->pspace == pspace |
5395 | && bl->address == pc | |
0d381245 VP |
5396 | && (!overlay_debugging || bl->section == section)) |
5397 | return 1; | |
5398 | } | |
5399 | return 0; | |
5400 | } | |
5401 | ||
6c95b8df PA |
5402 | /* Print a message describing any breakpoints set at PC. This |
5403 | concerns with logical breakpoints, so we match program spaces, not | |
5404 | address spaces. */ | |
c906108c SS |
5405 | |
5406 | static void | |
6c95b8df PA |
5407 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5408 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5409 | struct obj_section *section, int thread) |
c906108c | 5410 | { |
52f0bd74 AC |
5411 | int others = 0; |
5412 | struct breakpoint *b; | |
c906108c SS |
5413 | |
5414 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5415 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5416 | if (others > 0) |
5417 | { | |
a3f17187 AC |
5418 | if (others == 1) |
5419 | printf_filtered (_("Note: breakpoint ")); | |
5420 | else /* if (others == ???) */ | |
5421 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5422 | ALL_BREAKPOINTS (b) |
6c95b8df | 5423 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5424 | { |
5425 | others--; | |
5426 | printf_filtered ("%d", b->number); | |
5427 | if (b->thread == -1 && thread != -1) | |
5428 | printf_filtered (" (all threads)"); | |
5429 | else if (b->thread != -1) | |
5430 | printf_filtered (" (thread %d)", b->thread); | |
5431 | printf_filtered ("%s%s ", | |
059fb39f | 5432 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5433 | || b->enable_state == bp_call_disabled |
5434 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5435 | ? " (disabled)" |
5436 | : b->enable_state == bp_permanent | |
5437 | ? " (permanent)" | |
5438 | : ""), | |
5439 | (others > 1) ? "," | |
5440 | : ((others == 1) ? " and" : "")); | |
5441 | } | |
a3f17187 | 5442 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5443 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5444 | printf_filtered (".\n"); |
5445 | } | |
5446 | } | |
5447 | \f | |
5448 | /* Set the default place to put a breakpoint | |
5449 | for the `break' command with no arguments. */ | |
5450 | ||
5451 | void | |
6c95b8df PA |
5452 | set_default_breakpoint (int valid, struct program_space *pspace, |
5453 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5454 | int line) |
c906108c SS |
5455 | { |
5456 | default_breakpoint_valid = valid; | |
6c95b8df | 5457 | default_breakpoint_pspace = pspace; |
c906108c SS |
5458 | default_breakpoint_address = addr; |
5459 | default_breakpoint_symtab = symtab; | |
5460 | default_breakpoint_line = line; | |
5461 | } | |
5462 | ||
e4f237da KB |
5463 | /* Return true iff it is meaningful to use the address member of |
5464 | BPT. For some breakpoint types, the address member is irrelevant | |
5465 | and it makes no sense to attempt to compare it to other addresses | |
5466 | (or use it for any other purpose either). | |
5467 | ||
4a64f543 MS |
5468 | More specifically, each of the following breakpoint types will |
5469 | always have a zero valued address and we don't want to mark | |
5470 | breakpoints of any of these types to be a duplicate of an actual | |
5471 | breakpoint at address zero: | |
e4f237da KB |
5472 | |
5473 | bp_watchpoint | |
2d134ed3 PA |
5474 | bp_catchpoint |
5475 | ||
5476 | */ | |
e4f237da KB |
5477 | |
5478 | static int | |
5479 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5480 | { | |
5481 | enum bptype type = bpt->type; | |
5482 | ||
2d134ed3 PA |
5483 | return (type != bp_watchpoint && type != bp_catchpoint); |
5484 | } | |
5485 | ||
5486 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5487 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5488 | ||
5489 | static int | |
4a64f543 MS |
5490 | watchpoint_locations_match (struct bp_location *loc1, |
5491 | struct bp_location *loc2) | |
2d134ed3 | 5492 | { |
2bdf28a0 JK |
5493 | /* Both of them must not be in moribund_locations. */ |
5494 | gdb_assert (loc1->owner != NULL); | |
5495 | gdb_assert (loc2->owner != NULL); | |
5496 | ||
4a64f543 MS |
5497 | /* If the target can evaluate the condition expression in hardware, |
5498 | then we we need to insert both watchpoints even if they are at | |
5499 | the same place. Otherwise the watchpoint will only trigger when | |
5500 | the condition of whichever watchpoint was inserted evaluates to | |
5501 | true, not giving a chance for GDB to check the condition of the | |
5502 | other watchpoint. */ | |
0cf6dd15 | 5503 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5504 | && target_can_accel_watchpoint_condition (loc1->address, |
5505 | loc1->length, | |
0cf6dd15 TJB |
5506 | loc1->watchpoint_type, |
5507 | loc1->owner->cond_exp)) | |
5508 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5509 | && target_can_accel_watchpoint_condition (loc2->address, |
5510 | loc2->length, | |
0cf6dd15 TJB |
5511 | loc2->watchpoint_type, |
5512 | loc2->owner->cond_exp))) | |
5513 | return 0; | |
5514 | ||
85d721b8 PA |
5515 | /* Note that this checks the owner's type, not the location's. In |
5516 | case the target does not support read watchpoints, but does | |
5517 | support access watchpoints, we'll have bp_read_watchpoint | |
5518 | watchpoints with hw_access locations. Those should be considered | |
5519 | duplicates of hw_read locations. The hw_read locations will | |
5520 | become hw_access locations later. */ | |
2d134ed3 PA |
5521 | return (loc1->owner->type == loc2->owner->type |
5522 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5523 | && loc1->address == loc2->address | |
5524 | && loc1->length == loc2->length); | |
e4f237da KB |
5525 | } |
5526 | ||
6c95b8df PA |
5527 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5528 | same breakpoint location. In most targets, this can only be true | |
5529 | if ASPACE1 matches ASPACE2. On targets that have global | |
5530 | breakpoints, the address space doesn't really matter. */ | |
5531 | ||
5532 | static int | |
5533 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5534 | struct address_space *aspace2, CORE_ADDR addr2) | |
5535 | { | |
5536 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5537 | || aspace1 == aspace2) | |
5538 | && addr1 == addr2); | |
5539 | } | |
5540 | ||
f1310107 TJB |
5541 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5542 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5543 | matches ASPACE2. On targets that have global breakpoints, the address | |
5544 | space doesn't really matter. */ | |
5545 | ||
5546 | static int | |
5547 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5548 | int len1, struct address_space *aspace2, | |
5549 | CORE_ADDR addr2) | |
5550 | { | |
5551 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5552 | || aspace1 == aspace2) | |
5553 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5554 | } | |
5555 | ||
5556 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5557 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5558 | matches the breakpoint's address space. On targets that have global | |
5559 | breakpoints, the address space doesn't really matter. */ | |
5560 | ||
5561 | static int | |
5562 | breakpoint_location_address_match (struct bp_location *bl, | |
5563 | struct address_space *aspace, | |
5564 | CORE_ADDR addr) | |
5565 | { | |
5566 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5567 | aspace, addr) | |
5568 | || (bl->length | |
5569 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5570 | bl->address, bl->length, | |
5571 | aspace, addr))); | |
5572 | } | |
5573 | ||
2d134ed3 PA |
5574 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5575 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5576 | represent the same location. */ | |
5577 | ||
5578 | static int | |
4a64f543 MS |
5579 | breakpoint_locations_match (struct bp_location *loc1, |
5580 | struct bp_location *loc2) | |
2d134ed3 | 5581 | { |
2bdf28a0 JK |
5582 | int hw_point1, hw_point2; |
5583 | ||
5584 | /* Both of them must not be in moribund_locations. */ | |
5585 | gdb_assert (loc1->owner != NULL); | |
5586 | gdb_assert (loc2->owner != NULL); | |
5587 | ||
5588 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5589 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5590 | |
5591 | if (hw_point1 != hw_point2) | |
5592 | return 0; | |
5593 | else if (hw_point1) | |
5594 | return watchpoint_locations_match (loc1, loc2); | |
5595 | else | |
f1310107 TJB |
5596 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5597 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5598 | loc2->pspace->aspace, loc2->address) | |
5599 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5600 | } |
5601 | ||
76897487 KB |
5602 | static void |
5603 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5604 | int bnum, int have_bnum) | |
5605 | { | |
f63fbe86 MS |
5606 | /* The longest string possibly returned by hex_string_custom |
5607 | is 50 chars. These must be at least that big for safety. */ | |
5608 | char astr1[64]; | |
5609 | char astr2[64]; | |
76897487 | 5610 | |
bb599908 PH |
5611 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5612 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5613 | if (have_bnum) |
8a3fe4f8 | 5614 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5615 | bnum, astr1, astr2); |
5616 | else | |
8a3fe4f8 | 5617 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5618 | } |
5619 | ||
4a64f543 MS |
5620 | /* Adjust a breakpoint's address to account for architectural |
5621 | constraints on breakpoint placement. Return the adjusted address. | |
5622 | Note: Very few targets require this kind of adjustment. For most | |
5623 | targets, this function is simply the identity function. */ | |
76897487 KB |
5624 | |
5625 | static CORE_ADDR | |
a6d9a66e UW |
5626 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5627 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5628 | { |
a6d9a66e | 5629 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5630 | { |
5631 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5632 | return bpaddr; | |
5633 | } | |
88f7da05 KB |
5634 | else if (bptype == bp_watchpoint |
5635 | || bptype == bp_hardware_watchpoint | |
5636 | || bptype == bp_read_watchpoint | |
5637 | || bptype == bp_access_watchpoint | |
fe798b75 | 5638 | || bptype == bp_catchpoint) |
88f7da05 KB |
5639 | { |
5640 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5641 | have their addresses modified. */ | |
5642 | return bpaddr; | |
5643 | } | |
76897487 KB |
5644 | else |
5645 | { | |
5646 | CORE_ADDR adjusted_bpaddr; | |
5647 | ||
5648 | /* Some targets have architectural constraints on the placement | |
5649 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5650 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5651 | |
5652 | /* An adjusted breakpoint address can significantly alter | |
5653 | a user's expectations. Print a warning if an adjustment | |
5654 | is required. */ | |
5655 | if (adjusted_bpaddr != bpaddr) | |
5656 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5657 | ||
5658 | return adjusted_bpaddr; | |
5659 | } | |
5660 | } | |
5661 | ||
7cc221ef DJ |
5662 | /* Allocate a struct bp_location. */ |
5663 | ||
26bb91f3 | 5664 | static struct bp_location * |
39d61571 | 5665 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5666 | { |
afe38095 | 5667 | struct bp_location *loc; |
7cc221ef DJ |
5668 | |
5669 | loc = xmalloc (sizeof (struct bp_location)); | |
5670 | memset (loc, 0, sizeof (*loc)); | |
5671 | ||
e049a4b5 | 5672 | loc->owner = bpt; |
511a6cd4 | 5673 | loc->cond = NULL; |
0d381245 VP |
5674 | loc->shlib_disabled = 0; |
5675 | loc->enabled = 1; | |
e049a4b5 | 5676 | |
39d61571 | 5677 | switch (bpt->type) |
e049a4b5 DJ |
5678 | { |
5679 | case bp_breakpoint: | |
5680 | case bp_until: | |
5681 | case bp_finish: | |
5682 | case bp_longjmp: | |
5683 | case bp_longjmp_resume: | |
186c406b TT |
5684 | case bp_exception: |
5685 | case bp_exception_resume: | |
e049a4b5 | 5686 | case bp_step_resume: |
e049a4b5 DJ |
5687 | case bp_watchpoint_scope: |
5688 | case bp_call_dummy: | |
aa7d318d | 5689 | case bp_std_terminate: |
e049a4b5 DJ |
5690 | case bp_shlib_event: |
5691 | case bp_thread_event: | |
5692 | case bp_overlay_event: | |
4efc6507 | 5693 | case bp_jit_event: |
0fd8e87f | 5694 | case bp_longjmp_master: |
aa7d318d | 5695 | case bp_std_terminate_master: |
186c406b | 5696 | case bp_exception_master: |
0e30163f JK |
5697 | case bp_gnu_ifunc_resolver: |
5698 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5699 | loc->loc_type = bp_loc_software_breakpoint; |
5700 | break; | |
5701 | case bp_hardware_breakpoint: | |
5702 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5703 | break; | |
5704 | case bp_hardware_watchpoint: | |
5705 | case bp_read_watchpoint: | |
5706 | case bp_access_watchpoint: | |
5707 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5708 | break; | |
5709 | case bp_watchpoint: | |
ce78b96d | 5710 | case bp_catchpoint: |
15c3d785 PA |
5711 | case bp_tracepoint: |
5712 | case bp_fast_tracepoint: | |
0fb4aa4b | 5713 | case bp_static_tracepoint: |
e049a4b5 DJ |
5714 | loc->loc_type = bp_loc_other; |
5715 | break; | |
5716 | default: | |
e2e0b3e5 | 5717 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5718 | } |
5719 | ||
f431efe5 | 5720 | loc->refc = 1; |
7cc221ef DJ |
5721 | return loc; |
5722 | } | |
5723 | ||
f431efe5 PA |
5724 | static void |
5725 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5726 | { |
5727 | if (loc->cond) | |
5728 | xfree (loc->cond); | |
74960c60 VP |
5729 | |
5730 | if (loc->function_name) | |
5731 | xfree (loc->function_name); | |
f431efe5 | 5732 | |
fe3f5fa8 VP |
5733 | xfree (loc); |
5734 | } | |
5735 | ||
f431efe5 PA |
5736 | /* Increment reference count. */ |
5737 | ||
5738 | static void | |
5739 | incref_bp_location (struct bp_location *bl) | |
5740 | { | |
5741 | ++bl->refc; | |
5742 | } | |
5743 | ||
5744 | /* Decrement reference count. If the reference count reaches 0, | |
5745 | destroy the bp_location. Sets *BLP to NULL. */ | |
5746 | ||
5747 | static void | |
5748 | decref_bp_location (struct bp_location **blp) | |
5749 | { | |
0807b50c PA |
5750 | gdb_assert ((*blp)->refc > 0); |
5751 | ||
f431efe5 PA |
5752 | if (--(*blp)->refc == 0) |
5753 | free_bp_location (*blp); | |
5754 | *blp = NULL; | |
5755 | } | |
5756 | ||
4a64f543 MS |
5757 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5758 | type BPTYPE and has no locations as yet. */ | |
5759 | /* This function is used in gdbtk sources and thus can not be made | |
5760 | static. */ | |
c906108c | 5761 | |
c40e75cd | 5762 | static struct breakpoint * |
a6d9a66e UW |
5763 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5764 | enum bptype bptype) | |
c906108c | 5765 | { |
52f0bd74 | 5766 | struct breakpoint *b, *b1; |
c906108c SS |
5767 | |
5768 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5769 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5770 | |
4d28f7a8 | 5771 | b->type = bptype; |
a6d9a66e | 5772 | b->gdbarch = gdbarch; |
c906108c SS |
5773 | b->language = current_language->la_language; |
5774 | b->input_radix = input_radix; | |
5775 | b->thread = -1; | |
b5de0fa7 | 5776 | b->enable_state = bp_enabled; |
c906108c SS |
5777 | b->next = 0; |
5778 | b->silent = 0; | |
5779 | b->ignore_count = 0; | |
5780 | b->commands = NULL; | |
818dd999 | 5781 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5782 | b->forked_inferior_pid = null_ptid; |
c906108c | 5783 | b->exec_pathname = NULL; |
a96d9b2e | 5784 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5785 | b->ops = NULL; |
0d381245 | 5786 | b->condition_not_parsed = 0; |
84f4c1fe | 5787 | b->py_bp_object = NULL; |
d0fb5eae | 5788 | b->related_breakpoint = b; |
c906108c | 5789 | |
4a64f543 MS |
5790 | /* Add this breakpoint to the end of the chain so that a list of |
5791 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5792 | |
5793 | b1 = breakpoint_chain; | |
5794 | if (b1 == 0) | |
5795 | breakpoint_chain = b; | |
5796 | else | |
5797 | { | |
5798 | while (b1->next) | |
5799 | b1 = b1->next; | |
5800 | b1->next = b; | |
5801 | } | |
0d381245 VP |
5802 | return b; |
5803 | } | |
5804 | ||
0e30163f JK |
5805 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5806 | resolutions should be made as the user specified the location explicitly | |
5807 | enough. */ | |
5808 | ||
0d381245 | 5809 | static void |
0e30163f | 5810 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5811 | { |
2bdf28a0 JK |
5812 | gdb_assert (loc->owner != NULL); |
5813 | ||
0d381245 | 5814 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5815 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5816 | || is_tracepoint (loc->owner)) |
0d381245 | 5817 | { |
0e30163f JK |
5818 | int is_gnu_ifunc; |
5819 | ||
5820 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5821 | NULL, NULL, &is_gnu_ifunc); | |
5822 | ||
5823 | if (is_gnu_ifunc && !explicit_loc) | |
5824 | { | |
5825 | struct breakpoint *b = loc->owner; | |
5826 | ||
5827 | gdb_assert (loc->pspace == current_program_space); | |
5828 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5829 | &loc->requested_address)) | |
5830 | { | |
5831 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5832 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5833 | loc->requested_address, | |
5834 | b->type); | |
5835 | } | |
5836 | else if (b->type == bp_breakpoint && b->loc == loc | |
5837 | && loc->next == NULL && b->related_breakpoint == b) | |
5838 | { | |
5839 | /* Create only the whole new breakpoint of this type but do not | |
5840 | mess more complicated breakpoints with multiple locations. */ | |
5841 | b->type = bp_gnu_ifunc_resolver; | |
5842 | } | |
5843 | } | |
5844 | ||
0d381245 VP |
5845 | if (loc->function_name) |
5846 | loc->function_name = xstrdup (loc->function_name); | |
5847 | } | |
5848 | } | |
5849 | ||
a6d9a66e UW |
5850 | /* Attempt to determine architecture of location identified by SAL. */ |
5851 | static struct gdbarch * | |
5852 | get_sal_arch (struct symtab_and_line sal) | |
5853 | { | |
5854 | if (sal.section) | |
5855 | return get_objfile_arch (sal.section->objfile); | |
5856 | if (sal.symtab) | |
5857 | return get_objfile_arch (sal.symtab->objfile); | |
5858 | ||
5859 | return NULL; | |
5860 | } | |
5861 | ||
0d381245 VP |
5862 | /* set_raw_breakpoint is a low level routine for allocating and |
5863 | partially initializing a breakpoint of type BPTYPE. The newly | |
5864 | created breakpoint's address, section, source file name, and line | |
5865 | number are provided by SAL. The newly created and partially | |
5866 | initialized breakpoint is added to the breakpoint chain and | |
5867 | is also returned as the value of this function. | |
5868 | ||
5869 | It is expected that the caller will complete the initialization of | |
5870 | the newly created breakpoint struct as well as output any status | |
5871 | information regarding the creation of a new breakpoint. In | |
5872 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5873 | number! Care should be taken to not allow an error to occur | |
5874 | prior to completing the initialization of the breakpoint. If this | |
5875 | should happen, a bogus breakpoint will be left on the chain. */ | |
5876 | ||
63c252f8 | 5877 | struct breakpoint * |
a6d9a66e UW |
5878 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5879 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5880 | { |
4a64f543 MS |
5881 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5882 | bptype); | |
0d381245 | 5883 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5884 | struct gdbarch *loc_gdbarch; |
5885 | ||
5886 | loc_gdbarch = get_sal_arch (sal); | |
5887 | if (!loc_gdbarch) | |
5888 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5889 | |
6c95b8df PA |
5890 | if (bptype != bp_catchpoint) |
5891 | gdb_assert (sal.pspace != NULL); | |
5892 | ||
0d381245 VP |
5893 | /* Adjust the breakpoint's address prior to allocating a location. |
5894 | Once we call allocate_bp_location(), that mostly uninitialized | |
5895 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5896 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5897 | not want its scan of the location chain to find a breakpoint and |
5898 | location that's only been partially initialized. */ | |
4a64f543 MS |
5899 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5900 | sal.pc, b->type); | |
0d381245 | 5901 | |
39d61571 | 5902 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5903 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5904 | b->loc->requested_address = sal.pc; |
5905 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5906 | b->loc->pspace = sal.pspace; |
5907 | ||
5908 | /* Store the program space that was used to set the breakpoint, for | |
5909 | breakpoint resetting. */ | |
5910 | b->pspace = sal.pspace; | |
0d381245 VP |
5911 | |
5912 | if (sal.symtab == NULL) | |
5913 | b->source_file = NULL; | |
5914 | else | |
1b36a34b | 5915 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5916 | b->loc->section = sal.section; |
5917 | b->line_number = sal.line; | |
5918 | ||
0e30163f JK |
5919 | set_breakpoint_location_function (b->loc, |
5920 | sal.explicit_pc || sal.explicit_line); | |
c906108c | 5921 | |
c906108c SS |
5922 | breakpoints_changed (); |
5923 | ||
5924 | return b; | |
5925 | } | |
5926 | ||
c2c6d25f JM |
5927 | |
5928 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5929 | instruction, hard-wired into the inferior's code. */ | |
5930 | void | |
5931 | make_breakpoint_permanent (struct breakpoint *b) | |
5932 | { | |
0d381245 | 5933 | struct bp_location *bl; |
cc59ec59 | 5934 | |
b5de0fa7 | 5935 | b->enable_state = bp_permanent; |
c2c6d25f | 5936 | |
4a64f543 MS |
5937 | /* By definition, permanent breakpoints are already present in the |
5938 | code. Mark all locations as inserted. For now, | |
5939 | make_breakpoint_permanent is called in just one place, so it's | |
5940 | hard to say if it's reasonable to have permanent breakpoint with | |
5941 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5942 | for (bl = b->loc; bl; bl = bl->next) |
5943 | bl->inserted = 1; | |
c2c6d25f JM |
5944 | } |
5945 | ||
53a5351d | 5946 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5947 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5948 | initiated the operation. */ | |
c906108c SS |
5949 | |
5950 | void | |
186c406b | 5951 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5952 | { |
35df4500 | 5953 | struct breakpoint *b, *b_tmp; |
186c406b | 5954 | int thread = tp->num; |
0fd8e87f UW |
5955 | |
5956 | /* To avoid having to rescan all objfile symbols at every step, | |
5957 | we maintain a list of continually-inserted but always disabled | |
5958 | longjmp "master" breakpoints. Here, we simply create momentary | |
5959 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5960 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5961 | if (b->pspace == current_program_space |
186c406b TT |
5962 | && (b->type == bp_longjmp_master |
5963 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5964 | { |
5965 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5966 | |
186c406b | 5967 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5968 | clone->thread = thread; |
5969 | } | |
186c406b TT |
5970 | |
5971 | tp->initiating_frame = frame; | |
c906108c SS |
5972 | } |
5973 | ||
611c83ae | 5974 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5975 | void |
611c83ae | 5976 | delete_longjmp_breakpoint (int thread) |
c906108c | 5977 | { |
35df4500 | 5978 | struct breakpoint *b, *b_tmp; |
c906108c | 5979 | |
35df4500 | 5980 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5981 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5982 | { |
5983 | if (b->thread == thread) | |
5984 | delete_breakpoint (b); | |
5985 | } | |
c906108c SS |
5986 | } |
5987 | ||
1900040c MS |
5988 | void |
5989 | enable_overlay_breakpoints (void) | |
5990 | { | |
52f0bd74 | 5991 | struct breakpoint *b; |
1900040c MS |
5992 | |
5993 | ALL_BREAKPOINTS (b) | |
5994 | if (b->type == bp_overlay_event) | |
5995 | { | |
5996 | b->enable_state = bp_enabled; | |
b60e7edf | 5997 | update_global_location_list (1); |
c02f5703 | 5998 | overlay_events_enabled = 1; |
1900040c MS |
5999 | } |
6000 | } | |
6001 | ||
6002 | void | |
6003 | disable_overlay_breakpoints (void) | |
6004 | { | |
52f0bd74 | 6005 | struct breakpoint *b; |
1900040c MS |
6006 | |
6007 | ALL_BREAKPOINTS (b) | |
6008 | if (b->type == bp_overlay_event) | |
6009 | { | |
6010 | b->enable_state = bp_disabled; | |
b60e7edf | 6011 | update_global_location_list (0); |
c02f5703 | 6012 | overlay_events_enabled = 0; |
1900040c MS |
6013 | } |
6014 | } | |
6015 | ||
aa7d318d TT |
6016 | /* Set an active std::terminate breakpoint for each std::terminate |
6017 | master breakpoint. */ | |
6018 | void | |
6019 | set_std_terminate_breakpoint (void) | |
6020 | { | |
35df4500 | 6021 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6022 | |
35df4500 | 6023 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6024 | if (b->pspace == current_program_space |
6025 | && b->type == bp_std_terminate_master) | |
6026 | { | |
6027 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
6028 | clone->type = bp_std_terminate; | |
6029 | } | |
6030 | } | |
6031 | ||
6032 | /* Delete all the std::terminate breakpoints. */ | |
6033 | void | |
6034 | delete_std_terminate_breakpoint (void) | |
6035 | { | |
35df4500 | 6036 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6037 | |
35df4500 | 6038 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6039 | if (b->type == bp_std_terminate) |
6040 | delete_breakpoint (b); | |
6041 | } | |
6042 | ||
c4093a6a | 6043 | struct breakpoint * |
a6d9a66e | 6044 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6045 | { |
6046 | struct breakpoint *b; | |
c4093a6a | 6047 | |
a6d9a66e | 6048 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 6049 | |
b5de0fa7 | 6050 | b->enable_state = bp_enabled; |
c4093a6a | 6051 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6052 | b->addr_string |
6053 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6054 | |
b60e7edf | 6055 | update_global_location_list_nothrow (1); |
74960c60 | 6056 | |
c4093a6a JM |
6057 | return b; |
6058 | } | |
6059 | ||
6060 | void | |
6061 | remove_thread_event_breakpoints (void) | |
6062 | { | |
35df4500 | 6063 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6064 | |
35df4500 | 6065 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6066 | if (b->type == bp_thread_event |
6067 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6068 | delete_breakpoint (b); |
6069 | } | |
6070 | ||
0101ce28 JJ |
6071 | struct lang_and_radix |
6072 | { | |
6073 | enum language lang; | |
6074 | int radix; | |
6075 | }; | |
6076 | ||
4efc6507 DE |
6077 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6078 | ||
6079 | struct breakpoint * | |
6080 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6081 | { | |
6082 | struct breakpoint *b; | |
6083 | ||
6084 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
6085 | update_global_location_list_nothrow (1); | |
6086 | return b; | |
6087 | } | |
0101ce28 | 6088 | |
03673fc7 PP |
6089 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6090 | ||
6091 | void | |
6092 | remove_jit_event_breakpoints (void) | |
6093 | { | |
6094 | struct breakpoint *b, *b_tmp; | |
6095 | ||
6096 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6097 | if (b->type == bp_jit_event | |
6098 | && b->loc->pspace == current_program_space) | |
6099 | delete_breakpoint (b); | |
6100 | } | |
6101 | ||
cae688ec JJ |
6102 | void |
6103 | remove_solib_event_breakpoints (void) | |
6104 | { | |
35df4500 | 6105 | struct breakpoint *b, *b_tmp; |
cae688ec | 6106 | |
35df4500 | 6107 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6108 | if (b->type == bp_shlib_event |
6109 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6110 | delete_breakpoint (b); |
6111 | } | |
6112 | ||
6113 | struct breakpoint * | |
a6d9a66e | 6114 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6115 | { |
6116 | struct breakpoint *b; | |
6117 | ||
a6d9a66e | 6118 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 6119 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6120 | return b; |
6121 | } | |
6122 | ||
6123 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6124 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6125 | ||
6126 | void | |
cb851954 | 6127 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6128 | { |
876fa593 | 6129 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6130 | |
876fa593 | 6131 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6132 | { |
2bdf28a0 | 6133 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6134 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6135 | |
4a64f543 MS |
6136 | /* We apply the check to all breakpoints, including disabled for |
6137 | those with loc->duplicate set. This is so that when breakpoint | |
6138 | becomes enabled, or the duplicate is removed, gdb will try to | |
6139 | insert all breakpoints. If we don't set shlib_disabled here, | |
6140 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6141 | if (((b->type == bp_breakpoint) |
508ccb1f | 6142 | || (b->type == bp_jit_event) |
1042e4c0 | 6143 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6144 | || (is_tracepoint (b))) |
6c95b8df | 6145 | && loc->pspace == current_program_space |
0d381245 | 6146 | && !loc->shlib_disabled |
a77053c2 | 6147 | #ifdef PC_SOLIB |
0d381245 | 6148 | && PC_SOLIB (loc->address) |
a77053c2 | 6149 | #else |
6c95b8df | 6150 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6151 | #endif |
6152 | ) | |
0d381245 VP |
6153 | { |
6154 | loc->shlib_disabled = 1; | |
6155 | } | |
cae688ec JJ |
6156 | } |
6157 | } | |
6158 | ||
7a9dd1b2 | 6159 | /* Disable any breakpoints that are in an unloaded shared library. |
4a64f543 MS |
6160 | Only apply to enabled breakpoints, disabled ones can just stay |
6161 | disabled. */ | |
84acb35a | 6162 | |
75149521 | 6163 | static void |
84acb35a JJ |
6164 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6165 | { | |
876fa593 | 6166 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6167 | int disabled_shlib_breaks = 0; |
6168 | ||
c86cf029 VP |
6169 | /* SunOS a.out shared libraries are always mapped, so do not |
6170 | disable breakpoints; they will only be reported as unloaded | |
6171 | through clear_solib when GDB discards its shared library | |
6172 | list. See clear_solib for more information. */ | |
6173 | if (exec_bfd != NULL | |
6174 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6175 | return; | |
6176 | ||
876fa593 | 6177 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6178 | { |
2bdf28a0 | 6179 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6180 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6181 | |
0d381245 VP |
6182 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
6183 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 6184 | && solib->pspace == loc->pspace |
e2dd7057 | 6185 | && !loc->shlib_disabled |
508ccb1f TT |
6186 | && (b->type == bp_breakpoint |
6187 | || b->type == bp_jit_event | |
6188 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 6189 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6190 | { |
e2dd7057 PP |
6191 | loc->shlib_disabled = 1; |
6192 | /* At this point, we cannot rely on remove_breakpoint | |
6193 | succeeding so we must mark the breakpoint as not inserted | |
6194 | to prevent future errors occurring in remove_breakpoints. */ | |
6195 | loc->inserted = 0; | |
8d3788bd VP |
6196 | |
6197 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6198 | observer_notify_breakpoint_modified (b); | |
6199 | ||
e2dd7057 PP |
6200 | if (!disabled_shlib_breaks) |
6201 | { | |
6202 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6203 | warning (_("Temporarily disabling breakpoints " |
6204 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6205 | solib->so_name); |
84acb35a | 6206 | } |
e2dd7057 | 6207 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6208 | } |
6209 | } | |
84acb35a JJ |
6210 | } |
6211 | ||
ce78b96d JB |
6212 | /* FORK & VFORK catchpoints. */ |
6213 | ||
4a64f543 MS |
6214 | /* Implement the "insert" breakpoint_ops method for fork |
6215 | catchpoints. */ | |
ce78b96d | 6216 | |
77b06cd7 TJB |
6217 | static int |
6218 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6219 | { |
77b06cd7 | 6220 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6221 | } |
6222 | ||
4a64f543 MS |
6223 | /* Implement the "remove" breakpoint_ops method for fork |
6224 | catchpoints. */ | |
ce78b96d JB |
6225 | |
6226 | static int | |
77b06cd7 | 6227 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6228 | { |
6229 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6230 | } | |
6231 | ||
6232 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6233 | catchpoints. */ | |
6234 | ||
6235 | static int | |
f1310107 TJB |
6236 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6237 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6238 | { |
f1310107 | 6239 | return inferior_has_forked (inferior_ptid, &bl->owner->forked_inferior_pid); |
ce78b96d JB |
6240 | } |
6241 | ||
4a64f543 MS |
6242 | /* Implement the "print_it" breakpoint_ops method for fork |
6243 | catchpoints. */ | |
ce78b96d JB |
6244 | |
6245 | static enum print_stop_action | |
6246 | print_it_catch_fork (struct breakpoint *b) | |
6247 | { | |
6248 | annotate_catchpoint (b->number); | |
6249 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6250 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6251 | return PRINT_SRC_AND_LOC; | |
6252 | } | |
6253 | ||
4a64f543 MS |
6254 | /* Implement the "print_one" breakpoint_ops method for fork |
6255 | catchpoints. */ | |
ce78b96d JB |
6256 | |
6257 | static void | |
a6d9a66e | 6258 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6259 | { |
79a45b7d TT |
6260 | struct value_print_options opts; |
6261 | ||
6262 | get_user_print_options (&opts); | |
6263 | ||
4a64f543 MS |
6264 | /* Field 4, the address, is omitted (which makes the columns not |
6265 | line up too nicely with the headers, but the effect is relatively | |
6266 | readable). */ | |
79a45b7d | 6267 | if (opts.addressprint) |
ce78b96d JB |
6268 | ui_out_field_skip (uiout, "addr"); |
6269 | annotate_field (5); | |
6270 | ui_out_text (uiout, "fork"); | |
6271 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6272 | { | |
6273 | ui_out_text (uiout, ", process "); | |
6274 | ui_out_field_int (uiout, "what", | |
6275 | ptid_get_pid (b->forked_inferior_pid)); | |
6276 | ui_out_spaces (uiout, 1); | |
6277 | } | |
6278 | } | |
6279 | ||
6280 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6281 | catchpoints. */ | |
6282 | ||
6283 | static void | |
6284 | print_mention_catch_fork (struct breakpoint *b) | |
6285 | { | |
6286 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6287 | } | |
6288 | ||
6149aea9 PA |
6289 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6290 | catchpoints. */ | |
6291 | ||
6292 | static void | |
6293 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6294 | { | |
6295 | fprintf_unfiltered (fp, "catch fork"); | |
6296 | } | |
6297 | ||
ce78b96d JB |
6298 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6299 | ||
6300 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6301 | { | |
6302 | insert_catch_fork, | |
6303 | remove_catch_fork, | |
6304 | breakpoint_hit_catch_fork, | |
e09342b5 | 6305 | NULL, /* resources_needed */ |
ce78b96d JB |
6306 | print_it_catch_fork, |
6307 | print_one_catch_fork, | |
f1310107 | 6308 | NULL, /* print_one_detail */ |
6149aea9 PA |
6309 | print_mention_catch_fork, |
6310 | print_recreate_catch_fork | |
ce78b96d JB |
6311 | }; |
6312 | ||
4a64f543 MS |
6313 | /* Implement the "insert" breakpoint_ops method for vfork |
6314 | catchpoints. */ | |
ce78b96d | 6315 | |
77b06cd7 TJB |
6316 | static int |
6317 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6318 | { |
77b06cd7 | 6319 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6320 | } |
6321 | ||
4a64f543 MS |
6322 | /* Implement the "remove" breakpoint_ops method for vfork |
6323 | catchpoints. */ | |
ce78b96d JB |
6324 | |
6325 | static int | |
77b06cd7 | 6326 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6327 | { |
6328 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6329 | } | |
6330 | ||
6331 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6332 | catchpoints. */ | |
6333 | ||
6334 | static int | |
f1310107 TJB |
6335 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6336 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6337 | { |
f1310107 | 6338 | return inferior_has_vforked (inferior_ptid, &bl->owner->forked_inferior_pid); |
ce78b96d JB |
6339 | } |
6340 | ||
4a64f543 MS |
6341 | /* Implement the "print_it" breakpoint_ops method for vfork |
6342 | catchpoints. */ | |
ce78b96d JB |
6343 | |
6344 | static enum print_stop_action | |
6345 | print_it_catch_vfork (struct breakpoint *b) | |
6346 | { | |
6347 | annotate_catchpoint (b->number); | |
6348 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6349 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6350 | return PRINT_SRC_AND_LOC; | |
6351 | } | |
6352 | ||
4a64f543 MS |
6353 | /* Implement the "print_one" breakpoint_ops method for vfork |
6354 | catchpoints. */ | |
ce78b96d JB |
6355 | |
6356 | static void | |
a6d9a66e | 6357 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6358 | { |
79a45b7d TT |
6359 | struct value_print_options opts; |
6360 | ||
6361 | get_user_print_options (&opts); | |
4a64f543 MS |
6362 | /* Field 4, the address, is omitted (which makes the columns not |
6363 | line up too nicely with the headers, but the effect is relatively | |
6364 | readable). */ | |
79a45b7d | 6365 | if (opts.addressprint) |
ce78b96d JB |
6366 | ui_out_field_skip (uiout, "addr"); |
6367 | annotate_field (5); | |
6368 | ui_out_text (uiout, "vfork"); | |
6369 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6370 | { | |
6371 | ui_out_text (uiout, ", process "); | |
6372 | ui_out_field_int (uiout, "what", | |
6373 | ptid_get_pid (b->forked_inferior_pid)); | |
6374 | ui_out_spaces (uiout, 1); | |
6375 | } | |
6376 | } | |
6377 | ||
6378 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6379 | catchpoints. */ | |
6380 | ||
6381 | static void | |
6382 | print_mention_catch_vfork (struct breakpoint *b) | |
6383 | { | |
6384 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6385 | } | |
6386 | ||
6149aea9 PA |
6387 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6388 | catchpoints. */ | |
6389 | ||
6390 | static void | |
6391 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6392 | { | |
6393 | fprintf_unfiltered (fp, "catch vfork"); | |
6394 | } | |
6395 | ||
ce78b96d JB |
6396 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6397 | ||
6398 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6399 | { | |
6400 | insert_catch_vfork, | |
6401 | remove_catch_vfork, | |
6402 | breakpoint_hit_catch_vfork, | |
e09342b5 | 6403 | NULL, /* resources_needed */ |
ce78b96d JB |
6404 | print_it_catch_vfork, |
6405 | print_one_catch_vfork, | |
f1310107 | 6406 | NULL, /* print_one_detail */ |
6149aea9 PA |
6407 | print_mention_catch_vfork, |
6408 | print_recreate_catch_vfork | |
ce78b96d JB |
6409 | }; |
6410 | ||
a96d9b2e SDJ |
6411 | /* Implement the "insert" breakpoint_ops method for syscall |
6412 | catchpoints. */ | |
6413 | ||
77b06cd7 TJB |
6414 | static int |
6415 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e SDJ |
6416 | { |
6417 | struct inferior *inf = current_inferior (); | |
6418 | ||
6419 | ++inf->total_syscalls_count; | |
77b06cd7 | 6420 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6421 | ++inf->any_syscall_count; |
6422 | else | |
6423 | { | |
6424 | int i, iter; | |
cc59ec59 | 6425 | |
a96d9b2e | 6426 | for (i = 0; |
77b06cd7 | 6427 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6428 | i++) |
6429 | { | |
6430 | int elem; | |
cc59ec59 | 6431 | |
a96d9b2e SDJ |
6432 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6433 | { | |
6434 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6435 | uintptr_t vec_addr_offset |
6436 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6437 | uintptr_t vec_addr; |
6438 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6439 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6440 | vec_addr_offset; | |
6441 | memset ((void *) vec_addr, 0, | |
6442 | (iter + 1 - old_size) * sizeof (int)); | |
6443 | } | |
6444 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6445 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6446 | } | |
6447 | } | |
6448 | ||
77b06cd7 TJB |
6449 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6450 | inf->total_syscalls_count != 0, | |
6451 | inf->any_syscall_count, | |
6452 | VEC_length (int, inf->syscalls_counts), | |
6453 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6454 | } |
6455 | ||
6456 | /* Implement the "remove" breakpoint_ops method for syscall | |
6457 | catchpoints. */ | |
6458 | ||
6459 | static int | |
77b06cd7 | 6460 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e SDJ |
6461 | { |
6462 | struct inferior *inf = current_inferior (); | |
6463 | ||
6464 | --inf->total_syscalls_count; | |
77b06cd7 | 6465 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6466 | --inf->any_syscall_count; |
6467 | else | |
6468 | { | |
6469 | int i, iter; | |
cc59ec59 | 6470 | |
a96d9b2e | 6471 | for (i = 0; |
77b06cd7 | 6472 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6473 | i++) |
6474 | { | |
6475 | int elem; | |
6476 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6477 | /* Shouldn't happen. */ | |
6478 | continue; | |
6479 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6480 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6481 | } | |
6482 | } | |
6483 | ||
6484 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6485 | inf->total_syscalls_count != 0, | |
6486 | inf->any_syscall_count, | |
6487 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6488 | VEC_address (int, |
6489 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6490 | } |
6491 | ||
6492 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6493 | catchpoints. */ | |
6494 | ||
6495 | static int | |
f1310107 TJB |
6496 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6497 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6498 | { |
4a64f543 MS |
6499 | /* We must check if we are catching specific syscalls in this |
6500 | breakpoint. If we are, then we must guarantee that the called | |
6501 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6502 | int syscall_number = 0; |
f1310107 | 6503 | const struct breakpoint *b = bl->owner; |
a96d9b2e SDJ |
6504 | |
6505 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6506 | return 0; | |
6507 | ||
6508 | /* Now, checking if the syscall is the same. */ | |
6509 | if (b->syscalls_to_be_caught) | |
6510 | { | |
6511 | int i, iter; | |
cc59ec59 | 6512 | |
a96d9b2e SDJ |
6513 | for (i = 0; |
6514 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6515 | i++) | |
6516 | if (syscall_number == iter) | |
6517 | break; | |
6518 | /* Not the same. */ | |
6519 | if (!iter) | |
6520 | return 0; | |
6521 | } | |
6522 | ||
6523 | return 1; | |
6524 | } | |
6525 | ||
6526 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6527 | catchpoints. */ | |
6528 | ||
6529 | static enum print_stop_action | |
6530 | print_it_catch_syscall (struct breakpoint *b) | |
6531 | { | |
6532 | /* These are needed because we want to know in which state a | |
6533 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6534 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6535 | must print "called syscall" or "returned from syscall". */ | |
6536 | ptid_t ptid; | |
6537 | struct target_waitstatus last; | |
6538 | struct syscall s; | |
6539 | struct cleanup *old_chain; | |
6540 | char *syscall_id; | |
6541 | ||
6542 | get_last_target_status (&ptid, &last); | |
6543 | ||
6544 | get_syscall_by_number (last.value.syscall_number, &s); | |
6545 | ||
6546 | annotate_catchpoint (b->number); | |
6547 | ||
6548 | if (s.name == NULL) | |
6549 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6550 | else | |
6551 | syscall_id = xstrprintf ("'%s'", s.name); | |
6552 | ||
6553 | old_chain = make_cleanup (xfree, syscall_id); | |
6554 | ||
6555 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6556 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6557 | b->number, syscall_id); | |
6558 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6559 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6560 | b->number, syscall_id); | |
6561 | ||
6562 | do_cleanups (old_chain); | |
6563 | ||
6564 | return PRINT_SRC_AND_LOC; | |
6565 | } | |
6566 | ||
6567 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6568 | catchpoints. */ | |
6569 | ||
6570 | static void | |
6571 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6572 | struct bp_location **last_loc) |
a96d9b2e SDJ |
6573 | { |
6574 | struct value_print_options opts; | |
6575 | ||
6576 | get_user_print_options (&opts); | |
4a64f543 MS |
6577 | /* Field 4, the address, is omitted (which makes the columns not |
6578 | line up too nicely with the headers, but the effect is relatively | |
6579 | readable). */ | |
a96d9b2e SDJ |
6580 | if (opts.addressprint) |
6581 | ui_out_field_skip (uiout, "addr"); | |
6582 | annotate_field (5); | |
6583 | ||
6584 | if (b->syscalls_to_be_caught | |
6585 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6586 | ui_out_text (uiout, "syscalls \""); | |
6587 | else | |
6588 | ui_out_text (uiout, "syscall \""); | |
6589 | ||
6590 | if (b->syscalls_to_be_caught) | |
6591 | { | |
6592 | int i, iter; | |
6593 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6594 | |
a96d9b2e SDJ |
6595 | for (i = 0; |
6596 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6597 | i++) | |
6598 | { | |
6599 | char *x = text; | |
6600 | struct syscall s; | |
6601 | get_syscall_by_number (iter, &s); | |
6602 | ||
6603 | if (s.name != NULL) | |
6604 | text = xstrprintf ("%s%s, ", text, s.name); | |
6605 | else | |
6606 | text = xstrprintf ("%s%d, ", text, iter); | |
6607 | ||
6608 | /* We have to xfree the last 'text' (now stored at 'x') | |
6609 | because xstrprintf dinamically allocates new space for it | |
6610 | on every call. */ | |
6611 | xfree (x); | |
6612 | } | |
6613 | /* Remove the last comma. */ | |
6614 | text[strlen (text) - 2] = '\0'; | |
6615 | ui_out_field_string (uiout, "what", text); | |
6616 | } | |
6617 | else | |
6618 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6619 | ui_out_text (uiout, "\" "); | |
6620 | } | |
6621 | ||
6622 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6623 | catchpoints. */ | |
6624 | ||
6625 | static void | |
6626 | print_mention_catch_syscall (struct breakpoint *b) | |
6627 | { | |
6628 | if (b->syscalls_to_be_caught) | |
6629 | { | |
6630 | int i, iter; | |
6631 | ||
6632 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6633 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6634 | else | |
6635 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6636 | ||
6637 | for (i = 0; | |
6638 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6639 | i++) | |
6640 | { | |
6641 | struct syscall s; | |
6642 | get_syscall_by_number (iter, &s); | |
6643 | ||
6644 | if (s.name) | |
6645 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6646 | else | |
6647 | printf_filtered (" %d", s.number); | |
6648 | } | |
6649 | printf_filtered (")"); | |
6650 | } | |
6651 | else | |
6652 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6653 | b->number); | |
6654 | } | |
6655 | ||
6149aea9 PA |
6656 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6657 | catchpoints. */ | |
6658 | ||
6659 | static void | |
6660 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6661 | { | |
6662 | fprintf_unfiltered (fp, "catch syscall"); | |
6663 | ||
6664 | if (b->syscalls_to_be_caught) | |
6665 | { | |
6666 | int i, iter; | |
6667 | ||
6668 | for (i = 0; | |
6669 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6670 | i++) | |
6671 | { | |
6672 | struct syscall s; | |
6673 | ||
6674 | get_syscall_by_number (iter, &s); | |
6675 | if (s.name) | |
6676 | fprintf_unfiltered (fp, " %s", s.name); | |
6677 | else | |
6678 | fprintf_unfiltered (fp, " %d", s.number); | |
6679 | } | |
6680 | } | |
6681 | } | |
6682 | ||
a96d9b2e SDJ |
6683 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6684 | ||
6685 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6686 | { | |
6687 | insert_catch_syscall, | |
6688 | remove_catch_syscall, | |
6689 | breakpoint_hit_catch_syscall, | |
e09342b5 | 6690 | NULL, /* resources_needed */ |
a96d9b2e SDJ |
6691 | print_it_catch_syscall, |
6692 | print_one_catch_syscall, | |
f1310107 | 6693 | NULL, /* print_one_detail */ |
6149aea9 PA |
6694 | print_mention_catch_syscall, |
6695 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6696 | }; |
6697 | ||
6698 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6699 | ||
6700 | static int | |
6701 | syscall_catchpoint_p (struct breakpoint *b) | |
6702 | { | |
6703 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6704 | } | |
6705 | ||
6706 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6707 | but does NOT mention it nor update the global location list. | |
6708 | This is useful if you need to fill more fields in the | |
6709 | struct breakpoint before calling mention. | |
ce78b96d JB |
6710 | |
6711 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6712 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6713 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6714 | to the catchpoint. */ | |
6715 | ||
6716 | static struct breakpoint * | |
a96d9b2e SDJ |
6717 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6718 | char *cond_string, | |
6719 | struct breakpoint_ops *ops) | |
c906108c | 6720 | { |
c5aa993b JM |
6721 | struct symtab_and_line sal; |
6722 | struct breakpoint *b; | |
c5aa993b | 6723 | |
fe39c653 | 6724 | init_sal (&sal); |
6c95b8df | 6725 | sal.pspace = current_program_space; |
c5aa993b | 6726 | |
a6d9a66e | 6727 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6728 | set_breakpoint_count (breakpoint_count + 1); |
6729 | b->number = breakpoint_count; | |
ce78b96d | 6730 | |
1b36a34b | 6731 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6732 | b->thread = -1; |
c906108c | 6733 | b->addr_string = NULL; |
b5de0fa7 EZ |
6734 | b->enable_state = bp_enabled; |
6735 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6736 | b->ops = ops; |
c5aa993b | 6737 | |
a96d9b2e SDJ |
6738 | return b; |
6739 | } | |
6740 | ||
6741 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6742 | ||
6743 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6744 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6745 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6746 | to the catchpoint. */ | |
6747 | ||
6748 | static struct breakpoint * | |
6749 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6750 | char *cond_string, struct breakpoint_ops *ops) | |
6751 | { | |
6752 | struct breakpoint *b = | |
6753 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6754 | ||
c906108c | 6755 | mention (b); |
8d3788bd | 6756 | observer_notify_breakpoint_created (b); |
ce78b96d | 6757 | update_global_location_list (1); |
c906108c | 6758 | |
ce78b96d | 6759 | return b; |
c906108c | 6760 | } |
c5aa993b | 6761 | |
9b70b993 | 6762 | static void |
a6d9a66e UW |
6763 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6764 | int tempflag, char *cond_string, | |
ce78b96d | 6765 | struct breakpoint_ops *ops) |
c906108c | 6766 | { |
a6d9a66e UW |
6767 | struct breakpoint *b |
6768 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6769 | |
6770 | /* FIXME: We should put this information in a breakpoint private data | |
6771 | area. */ | |
6772 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6773 | } |
6774 | ||
fe798b75 JB |
6775 | /* Exec catchpoints. */ |
6776 | ||
77b06cd7 TJB |
6777 | static int |
6778 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6779 | { |
77b06cd7 | 6780 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6781 | } |
c906108c | 6782 | |
fe798b75 | 6783 | static int |
77b06cd7 | 6784 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6785 | { |
6786 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6787 | } | |
c906108c | 6788 | |
fe798b75 | 6789 | static int |
f1310107 TJB |
6790 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6791 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6792 | { |
f1310107 | 6793 | return inferior_has_execd (inferior_ptid, &bl->owner->exec_pathname); |
fe798b75 | 6794 | } |
c906108c | 6795 | |
fe798b75 JB |
6796 | static enum print_stop_action |
6797 | print_it_catch_exec (struct breakpoint *b) | |
6798 | { | |
6799 | annotate_catchpoint (b->number); | |
6800 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6801 | b->exec_pathname); | |
6802 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6803 | } |
6804 | ||
fe798b75 | 6805 | static void |
a6d9a66e | 6806 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6807 | { |
6808 | struct value_print_options opts; | |
6809 | ||
6810 | get_user_print_options (&opts); | |
6811 | ||
6812 | /* Field 4, the address, is omitted (which makes the columns | |
6813 | not line up too nicely with the headers, but the effect | |
6814 | is relatively readable). */ | |
6815 | if (opts.addressprint) | |
6816 | ui_out_field_skip (uiout, "addr"); | |
6817 | annotate_field (5); | |
6818 | ui_out_text (uiout, "exec"); | |
6819 | if (b->exec_pathname != NULL) | |
6820 | { | |
6821 | ui_out_text (uiout, ", program \""); | |
6822 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6823 | ui_out_text (uiout, "\" "); | |
6824 | } | |
6825 | } | |
6826 | ||
6827 | static void | |
6828 | print_mention_catch_exec (struct breakpoint *b) | |
6829 | { | |
6830 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6831 | } | |
6832 | ||
6149aea9 PA |
6833 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6834 | catchpoints. */ | |
6835 | ||
6836 | static void | |
6837 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6838 | { | |
6839 | fprintf_unfiltered (fp, "catch exec"); | |
6840 | } | |
6841 | ||
fe798b75 JB |
6842 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6843 | { | |
6844 | insert_catch_exec, | |
6845 | remove_catch_exec, | |
6846 | breakpoint_hit_catch_exec, | |
e09342b5 | 6847 | NULL, /* resources_needed */ |
fe798b75 JB |
6848 | print_it_catch_exec, |
6849 | print_one_catch_exec, | |
f1310107 | 6850 | NULL, /* print_one_detail */ |
6149aea9 PA |
6851 | print_mention_catch_exec, |
6852 | print_recreate_catch_exec | |
fe798b75 JB |
6853 | }; |
6854 | ||
a96d9b2e SDJ |
6855 | static void |
6856 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6857 | struct breakpoint_ops *ops) | |
6858 | { | |
6859 | struct gdbarch *gdbarch = get_current_arch (); | |
6860 | struct breakpoint *b = | |
6861 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6862 | ||
6863 | b->syscalls_to_be_caught = filter; | |
6864 | ||
6865 | /* Now, we have to mention the breakpoint and update the global | |
6866 | location list. */ | |
6867 | mention (b); | |
8d3788bd | 6868 | observer_notify_breakpoint_created (b); |
a96d9b2e SDJ |
6869 | update_global_location_list (1); |
6870 | } | |
6871 | ||
c906108c | 6872 | static int |
fba45db2 | 6873 | hw_breakpoint_used_count (void) |
c906108c | 6874 | { |
c906108c | 6875 | int i = 0; |
f1310107 TJB |
6876 | struct breakpoint *b; |
6877 | struct bp_location *bl; | |
c906108c SS |
6878 | |
6879 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6880 | { |
d6b74ac4 | 6881 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6882 | for (bl = b->loc; bl; bl = bl->next) |
6883 | { | |
6884 | /* Special types of hardware breakpoints may use more than | |
6885 | one register. */ | |
6886 | if (b->ops && b->ops->resources_needed) | |
6887 | i += b->ops->resources_needed (bl); | |
6888 | else | |
6889 | i++; | |
6890 | } | |
c5aa993b | 6891 | } |
c906108c SS |
6892 | |
6893 | return i; | |
6894 | } | |
6895 | ||
6896 | static int | |
fba45db2 | 6897 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6898 | { |
c906108c | 6899 | int i = 0; |
e09342b5 TJB |
6900 | struct breakpoint *b; |
6901 | struct bp_location *bl; | |
c906108c SS |
6902 | |
6903 | *other_type_used = 0; | |
6904 | ALL_BREAKPOINTS (b) | |
e09342b5 TJB |
6905 | { |
6906 | if (!breakpoint_enabled (b)) | |
6907 | continue; | |
6908 | ||
c5aa993b | 6909 | if (b->type == type) |
e09342b5 TJB |
6910 | for (bl = b->loc; bl; bl = bl->next) |
6911 | { | |
6912 | /* Special types of hardware watchpoints may use more than | |
6913 | one register. */ | |
6914 | if (b->ops && b->ops->resources_needed) | |
6915 | i += b->ops->resources_needed (bl); | |
6916 | else | |
6917 | i++; | |
6918 | } | |
cc60f2e3 | 6919 | else if (is_hardware_watchpoint (b)) |
c5aa993b | 6920 | *other_type_used = 1; |
e09342b5 TJB |
6921 | } |
6922 | ||
c906108c SS |
6923 | return i; |
6924 | } | |
6925 | ||
c906108c | 6926 | void |
fba45db2 | 6927 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6928 | { |
c5aa993b | 6929 | struct breakpoint *b; |
c906108c SS |
6930 | |
6931 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6932 | { |
cc60f2e3 | 6933 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6934 | { |
b5de0fa7 | 6935 | b->enable_state = bp_call_disabled; |
b60e7edf | 6936 | update_global_location_list (0); |
c5aa993b JM |
6937 | } |
6938 | } | |
c906108c SS |
6939 | } |
6940 | ||
6941 | void | |
fba45db2 | 6942 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6943 | { |
c5aa993b | 6944 | struct breakpoint *b; |
c906108c SS |
6945 | |
6946 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6947 | { |
cc60f2e3 | 6948 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6949 | { |
b5de0fa7 | 6950 | b->enable_state = bp_enabled; |
b60e7edf | 6951 | update_global_location_list (1); |
c5aa993b JM |
6952 | } |
6953 | } | |
c906108c SS |
6954 | } |
6955 | ||
8bea4e01 UW |
6956 | void |
6957 | disable_breakpoints_before_startup (void) | |
6958 | { | |
6959 | struct breakpoint *b; | |
6960 | int found = 0; | |
6961 | ||
6962 | ALL_BREAKPOINTS (b) | |
6963 | { | |
6c95b8df PA |
6964 | if (b->pspace != current_program_space) |
6965 | continue; | |
6966 | ||
8bea4e01 UW |
6967 | if ((b->type == bp_breakpoint |
6968 | || b->type == bp_hardware_breakpoint) | |
6969 | && breakpoint_enabled (b)) | |
6970 | { | |
6971 | b->enable_state = bp_startup_disabled; | |
6972 | found = 1; | |
6973 | } | |
6974 | } | |
6975 | ||
6976 | if (found) | |
6977 | update_global_location_list (0); | |
6978 | ||
6c95b8df | 6979 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6980 | } |
6981 | ||
6982 | void | |
6983 | enable_breakpoints_after_startup (void) | |
6984 | { | |
6985 | struct breakpoint *b; | |
6986 | int found = 0; | |
6987 | ||
6c95b8df | 6988 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6989 | |
6990 | ALL_BREAKPOINTS (b) | |
6991 | { | |
6c95b8df PA |
6992 | if (b->pspace != current_program_space) |
6993 | continue; | |
6994 | ||
8bea4e01 UW |
6995 | if ((b->type == bp_breakpoint |
6996 | || b->type == bp_hardware_breakpoint) | |
6997 | && b->enable_state == bp_startup_disabled) | |
6998 | { | |
6999 | b->enable_state = bp_enabled; | |
7000 | found = 1; | |
7001 | } | |
7002 | } | |
7003 | ||
7004 | if (found) | |
7005 | breakpoint_re_set (); | |
7006 | } | |
7007 | ||
c906108c SS |
7008 | |
7009 | /* Set a breakpoint that will evaporate an end of command | |
7010 | at address specified by SAL. | |
7011 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
7012 | ||
7013 | struct breakpoint * | |
a6d9a66e UW |
7014 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7015 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7016 | { |
52f0bd74 | 7017 | struct breakpoint *b; |
edb3359d DJ |
7018 | |
7019 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
7020 | one. */ | |
7021 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
7022 | ||
a6d9a66e | 7023 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
7024 | b->enable_state = bp_enabled; |
7025 | b->disposition = disp_donttouch; | |
818dd999 | 7026 | b->frame_id = frame_id; |
c906108c | 7027 | |
4a64f543 MS |
7028 | /* If we're debugging a multi-threaded program, then we want |
7029 | momentary breakpoints to be active in only a single thread of | |
7030 | control. */ | |
39f77062 KB |
7031 | if (in_thread_list (inferior_ptid)) |
7032 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 7033 | |
b60e7edf | 7034 | update_global_location_list_nothrow (1); |
74960c60 | 7035 | |
c906108c SS |
7036 | return b; |
7037 | } | |
611c83ae | 7038 | |
e58b0e63 PA |
7039 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7040 | ORIG is NULL. */ | |
7041 | ||
7042 | struct breakpoint * | |
7043 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7044 | { | |
7045 | struct breakpoint *copy; | |
7046 | ||
7047 | /* If there's nothing to clone, then return nothing. */ | |
7048 | if (orig == NULL) | |
7049 | return NULL; | |
7050 | ||
a6d9a66e | 7051 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 | 7052 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7053 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7054 | |
a6d9a66e | 7055 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7056 | copy->loc->requested_address = orig->loc->requested_address; |
7057 | copy->loc->address = orig->loc->address; | |
7058 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7059 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
7060 | |
7061 | if (orig->source_file == NULL) | |
7062 | copy->source_file = NULL; | |
7063 | else | |
7064 | copy->source_file = xstrdup (orig->source_file); | |
7065 | ||
7066 | copy->line_number = orig->line_number; | |
7067 | copy->frame_id = orig->frame_id; | |
7068 | copy->thread = orig->thread; | |
6c95b8df | 7069 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7070 | |
7071 | copy->enable_state = bp_enabled; | |
7072 | copy->disposition = disp_donttouch; | |
7073 | copy->number = internal_breakpoint_number--; | |
7074 | ||
7075 | update_global_location_list_nothrow (0); | |
7076 | return copy; | |
7077 | } | |
7078 | ||
611c83ae | 7079 | struct breakpoint * |
a6d9a66e UW |
7080 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7081 | enum bptype type) | |
611c83ae PA |
7082 | { |
7083 | struct symtab_and_line sal; | |
7084 | ||
7085 | sal = find_pc_line (pc, 0); | |
7086 | sal.pc = pc; | |
7087 | sal.section = find_pc_overlay (pc); | |
7088 | sal.explicit_pc = 1; | |
7089 | ||
a6d9a66e | 7090 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7091 | } |
c906108c | 7092 | \f |
c5aa993b | 7093 | |
c906108c SS |
7094 | /* Tell the user we have just set a breakpoint B. */ |
7095 | ||
7096 | static void | |
fba45db2 | 7097 | mention (struct breakpoint *b) |
c906108c SS |
7098 | { |
7099 | int say_where = 0; | |
fa8a61dc | 7100 | struct cleanup *ui_out_chain; |
79a45b7d TT |
7101 | struct value_print_options opts; |
7102 | ||
7103 | get_user_print_options (&opts); | |
8b93c638 | 7104 | |
3086aeae DJ |
7105 | if (b->ops != NULL && b->ops->print_mention != NULL) |
7106 | b->ops->print_mention (b); | |
7107 | else | |
7108 | switch (b->type) | |
7109 | { | |
7110 | case bp_none: | |
3e43a32a MS |
7111 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), |
7112 | b->number); | |
3086aeae DJ |
7113 | break; |
7114 | case bp_watchpoint: | |
7115 | ui_out_text (uiout, "Watchpoint "); | |
7116 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7117 | ui_out_field_int (uiout, "number", b->number); | |
7118 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7119 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7120 | do_cleanups (ui_out_chain); |
7121 | break; | |
7122 | case bp_hardware_watchpoint: | |
7123 | ui_out_text (uiout, "Hardware watchpoint "); | |
7124 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7125 | ui_out_field_int (uiout, "number", b->number); | |
7126 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7127 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7128 | do_cleanups (ui_out_chain); |
7129 | break; | |
7130 | case bp_read_watchpoint: | |
7131 | ui_out_text (uiout, "Hardware read watchpoint "); | |
7132 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
7133 | ui_out_field_int (uiout, "number", b->number); | |
7134 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7135 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7136 | do_cleanups (ui_out_chain); |
7137 | break; | |
7138 | case bp_access_watchpoint: | |
7139 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
7140 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
7141 | ui_out_field_int (uiout, "number", b->number); | |
7142 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7143 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7144 | do_cleanups (ui_out_chain); |
7145 | break; | |
7146 | case bp_breakpoint: | |
0e30163f | 7147 | case bp_gnu_ifunc_resolver: |
3086aeae DJ |
7148 | if (ui_out_is_mi_like_p (uiout)) |
7149 | { | |
7150 | say_where = 0; | |
7151 | break; | |
7152 | } | |
2cec12e5 AR |
7153 | if (b->disposition == disp_del) |
7154 | printf_filtered (_("Temporary breakpoint")); | |
7155 | else | |
7156 | printf_filtered (_("Breakpoint")); | |
7157 | printf_filtered (_(" %d"), b->number); | |
0e30163f JK |
7158 | if (b->type == bp_gnu_ifunc_resolver) |
7159 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
3086aeae DJ |
7160 | say_where = 1; |
7161 | break; | |
7162 | case bp_hardware_breakpoint: | |
7163 | if (ui_out_is_mi_like_p (uiout)) | |
7164 | { | |
7165 | say_where = 0; | |
7166 | break; | |
7167 | } | |
a3f17187 | 7168 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
7169 | say_where = 1; |
7170 | break; | |
1042e4c0 SS |
7171 | case bp_tracepoint: |
7172 | if (ui_out_is_mi_like_p (uiout)) | |
7173 | { | |
7174 | say_where = 0; | |
7175 | break; | |
7176 | } | |
7177 | printf_filtered (_("Tracepoint")); | |
7178 | printf_filtered (_(" %d"), b->number); | |
7179 | say_where = 1; | |
7180 | break; | |
7a697b8d SS |
7181 | case bp_fast_tracepoint: |
7182 | if (ui_out_is_mi_like_p (uiout)) | |
7183 | { | |
7184 | say_where = 0; | |
7185 | break; | |
7186 | } | |
7187 | printf_filtered (_("Fast tracepoint")); | |
7188 | printf_filtered (_(" %d"), b->number); | |
7189 | say_where = 1; | |
7190 | break; | |
0fb4aa4b PA |
7191 | case bp_static_tracepoint: |
7192 | if (ui_out_is_mi_like_p (uiout)) | |
7193 | { | |
7194 | say_where = 0; | |
7195 | break; | |
7196 | } | |
7197 | printf_filtered (_("Static tracepoint")); | |
7198 | printf_filtered (_(" %d"), b->number); | |
7199 | say_where = 1; | |
7200 | break; | |
3086aeae DJ |
7201 | |
7202 | case bp_until: | |
7203 | case bp_finish: | |
7204 | case bp_longjmp: | |
7205 | case bp_longjmp_resume: | |
186c406b TT |
7206 | case bp_exception: |
7207 | case bp_exception_resume: | |
3086aeae | 7208 | case bp_step_resume: |
3086aeae | 7209 | case bp_call_dummy: |
aa7d318d | 7210 | case bp_std_terminate: |
3086aeae DJ |
7211 | case bp_watchpoint_scope: |
7212 | case bp_shlib_event: | |
7213 | case bp_thread_event: | |
7214 | case bp_overlay_event: | |
4efc6507 | 7215 | case bp_jit_event: |
0fd8e87f | 7216 | case bp_longjmp_master: |
aa7d318d | 7217 | case bp_std_terminate_master: |
186c406b | 7218 | case bp_exception_master: |
0e30163f | 7219 | case bp_gnu_ifunc_resolver_return: |
3086aeae DJ |
7220 | break; |
7221 | } | |
c906108c | 7222 | |
c906108c SS |
7223 | if (say_where) |
7224 | { | |
a3f17187 AC |
7225 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
7226 | single string. */ | |
0d381245 | 7227 | if (b->loc == NULL) |
c906108c | 7228 | { |
a3f17187 | 7229 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
7230 | } |
7231 | else | |
7232 | { | |
79a45b7d | 7233 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
7234 | { |
7235 | printf_filtered (" at "); | |
5af949e3 UW |
7236 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
7237 | gdb_stdout); | |
0101ce28 JJ |
7238 | } |
7239 | if (b->source_file) | |
7240 | printf_filtered (": file %s, line %d.", | |
7241 | b->source_file, b->line_number); | |
0d381245 VP |
7242 | |
7243 | if (b->loc->next) | |
7244 | { | |
7245 | struct bp_location *loc = b->loc; | |
7246 | int n = 0; | |
7247 | for (; loc; loc = loc->next) | |
7248 | ++n; | |
7249 | printf_filtered (" (%d locations)", n); | |
7250 | } | |
7251 | ||
c906108c | 7252 | } |
c906108c | 7253 | } |
9dc5e2a9 | 7254 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7255 | return; |
c906108c SS |
7256 | printf_filtered ("\n"); |
7257 | } | |
c906108c | 7258 | \f |
c5aa993b | 7259 | |
0d381245 | 7260 | static struct bp_location * |
39d61571 | 7261 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7262 | const struct symtab_and_line *sal) |
7263 | { | |
7264 | struct bp_location *loc, **tmp; | |
7265 | ||
39d61571 | 7266 | loc = allocate_bp_location (b); |
0d381245 VP |
7267 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7268 | ; | |
7269 | *tmp = loc; | |
a6d9a66e UW |
7270 | loc->gdbarch = get_sal_arch (*sal); |
7271 | if (!loc->gdbarch) | |
7272 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7273 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7274 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7275 | loc->requested_address, b->type); | |
6c95b8df PA |
7276 | loc->pspace = sal->pspace; |
7277 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7278 | loc->section = sal->section; |
7279 | ||
0e30163f JK |
7280 | set_breakpoint_location_function (loc, |
7281 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7282 | return loc; |
7283 | } | |
514f746b AR |
7284 | \f |
7285 | ||
7286 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7287 | return 0 otherwise. */ | |
7288 | ||
7289 | static int | |
7290 | bp_loc_is_permanent (struct bp_location *loc) | |
7291 | { | |
7292 | int len; | |
7293 | CORE_ADDR addr; | |
7294 | const gdb_byte *brk; | |
7295 | gdb_byte *target_mem; | |
939c61fa JK |
7296 | struct cleanup *cleanup; |
7297 | int retval = 0; | |
514f746b AR |
7298 | |
7299 | gdb_assert (loc != NULL); | |
7300 | ||
7301 | addr = loc->address; | |
a6d9a66e | 7302 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7303 | |
939c61fa JK |
7304 | /* Software breakpoints unsupported? */ |
7305 | if (brk == NULL) | |
7306 | return 0; | |
7307 | ||
514f746b AR |
7308 | target_mem = alloca (len); |
7309 | ||
939c61fa JK |
7310 | /* Enable the automatic memory restoration from breakpoints while |
7311 | we read the memory. Otherwise we could say about our temporary | |
7312 | breakpoints they are permanent. */ | |
6c95b8df PA |
7313 | cleanup = save_current_space_and_thread (); |
7314 | ||
7315 | switch_to_program_space_and_thread (loc->pspace); | |
7316 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7317 | |
514f746b AR |
7318 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7319 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7320 | retval = 1; |
514f746b | 7321 | |
939c61fa JK |
7322 | do_cleanups (cleanup); |
7323 | ||
7324 | return retval; | |
514f746b AR |
7325 | } |
7326 | ||
7327 | ||
c3f6f71d | 7328 | |
018d34a4 VP |
7329 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7330 | as textual description of the location, and COND_STRING | |
db107f19 | 7331 | as condition expression. */ |
018d34a4 VP |
7332 | |
7333 | static void | |
8cdf0e15 VP |
7334 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7335 | struct symtabs_and_lines sals, char *addr_string, | |
7336 | char *cond_string, | |
7337 | enum bptype type, enum bpdisp disposition, | |
7338 | int thread, int task, int ignore_count, | |
84f4c1fe | 7339 | struct breakpoint_ops *ops, int from_tty, |
56435ebe | 7340 | int enabled, int internal, int display_canonical) |
018d34a4 | 7341 | { |
0d381245 VP |
7342 | struct breakpoint *b = NULL; |
7343 | int i; | |
018d34a4 VP |
7344 | |
7345 | if (type == bp_hardware_breakpoint) | |
7346 | { | |
7347 | int i = hw_breakpoint_used_count (); | |
7348 | int target_resources_ok = | |
d92524f1 | 7349 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7350 | i + 1, 0); |
7351 | if (target_resources_ok == 0) | |
7352 | error (_("No hardware breakpoint support in the target.")); | |
7353 | else if (target_resources_ok < 0) | |
7354 | error (_("Hardware breakpoints used exceeds limit.")); | |
7355 | } | |
7356 | ||
6c95b8df PA |
7357 | gdb_assert (sals.nelts > 0); |
7358 | ||
0d381245 VP |
7359 | for (i = 0; i < sals.nelts; ++i) |
7360 | { | |
7361 | struct symtab_and_line sal = sals.sals[i]; | |
7362 | struct bp_location *loc; | |
7363 | ||
7364 | if (from_tty) | |
5af949e3 UW |
7365 | { |
7366 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7367 | if (!loc_gdbarch) | |
7368 | loc_gdbarch = gdbarch; | |
7369 | ||
7370 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7371 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7372 | } |
0d381245 VP |
7373 | |
7374 | if (i == 0) | |
7375 | { | |
a6d9a66e | 7376 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7377 | set_breakpoint_number (internal, b); |
0d381245 | 7378 | b->thread = thread; |
4a306c9a | 7379 | b->task = task; |
018d34a4 | 7380 | |
0d381245 VP |
7381 | b->cond_string = cond_string; |
7382 | b->ignore_count = ignore_count; | |
41447f92 | 7383 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7384 | b->disposition = disposition; |
6c95b8df PA |
7385 | b->pspace = sals.sals[0].pspace; |
7386 | ||
0fb4aa4b PA |
7387 | if (type == bp_static_tracepoint) |
7388 | { | |
7389 | struct static_tracepoint_marker marker; | |
7390 | ||
7391 | if (is_marker_spec (addr_string)) | |
7392 | { | |
7393 | /* We already know the marker exists, otherwise, we | |
7394 | wouldn't see a sal for it. */ | |
7395 | char *p = &addr_string[3]; | |
7396 | char *endp; | |
7397 | char *marker_str; | |
7398 | int i; | |
7399 | ||
e9cafbcc | 7400 | p = skip_spaces (p); |
0fb4aa4b | 7401 | |
e9cafbcc | 7402 | endp = skip_to_space (p); |
0fb4aa4b PA |
7403 | |
7404 | marker_str = savestring (p, endp - p); | |
7405 | b->static_trace_marker_id = marker_str; | |
7406 | ||
3e43a32a MS |
7407 | printf_filtered (_("Probed static tracepoint " |
7408 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7409 | b->static_trace_marker_id); |
7410 | } | |
7411 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7412 | { | |
7413 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7414 | release_static_tracepoint_marker (&marker); | |
7415 | ||
3e43a32a MS |
7416 | printf_filtered (_("Probed static tracepoint " |
7417 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7418 | b->static_trace_marker_id); |
7419 | } | |
7420 | else | |
3e43a32a MS |
7421 | warning (_("Couldn't determine the static " |
7422 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7423 | } |
7424 | ||
6c95b8df | 7425 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7426 | && (b->type == bp_breakpoint |
7427 | || b->type == bp_hardware_breakpoint)) | |
7428 | b->enable_state = bp_startup_disabled; | |
7429 | ||
0d381245 VP |
7430 | loc = b->loc; |
7431 | } | |
7432 | else | |
018d34a4 | 7433 | { |
39d61571 | 7434 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7435 | } |
7436 | ||
514f746b AR |
7437 | if (bp_loc_is_permanent (loc)) |
7438 | make_breakpoint_permanent (b); | |
7439 | ||
0d381245 VP |
7440 | if (b->cond_string) |
7441 | { | |
7442 | char *arg = b->cond_string; | |
d32a6982 | 7443 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7444 | if (*arg) |
db107f19 | 7445 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7446 | } |
0d381245 | 7447 | } |
018d34a4 | 7448 | |
56435ebe | 7449 | b->display_canonical = display_canonical; |
018d34a4 VP |
7450 | if (addr_string) |
7451 | b->addr_string = addr_string; | |
7452 | else | |
7453 | /* addr_string has to be used or breakpoint_re_set will delete | |
7454 | me. */ | |
5af949e3 UW |
7455 | b->addr_string |
7456 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7457 | |
604133b5 | 7458 | b->ops = ops; |
8d3788bd VP |
7459 | /* Do not mention breakpoints with a negative number, but do |
7460 | notify observers. */ | |
7461 | if (!internal) | |
84f4c1fe | 7462 | mention (b); |
8d3788bd | 7463 | observer_notify_breakpoint_created (b); |
018d34a4 VP |
7464 | } |
7465 | ||
ed0616c6 VP |
7466 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7467 | elements to fill the void space. */ | |
2c0b251b PA |
7468 | static void |
7469 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7470 | { |
7471 | int i = index_to_remove+1; | |
7472 | int last_index = sal->nelts-1; | |
7473 | ||
7474 | for (;i <= last_index; ++i) | |
7475 | sal->sals[i-1] = sal->sals[i]; | |
7476 | ||
7477 | --(sal->nelts); | |
7478 | } | |
7479 | ||
6c95b8df PA |
7480 | /* If appropriate, obtains all sals that correspond to the same file |
7481 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7482 | will want to set a breakpoint at foo.c:line, and not really care | |
7483 | about program spaces. This is done only if SAL does not have | |
7484 | explicit PC and has line and file information. If we got just a | |
7485 | single expanded sal, return the original. | |
ed0616c6 | 7486 | |
6c95b8df PA |
7487 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7488 | which the name of enclosing function is different from SAL. This | |
7489 | makes sure that if we have breakpoint originally set in template | |
7490 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7491 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7492 | |
2c0b251b | 7493 | static struct symtabs_and_lines |
ed0616c6 VP |
7494 | expand_line_sal_maybe (struct symtab_and_line sal) |
7495 | { | |
7496 | struct symtabs_and_lines expanded; | |
7497 | CORE_ADDR original_pc = sal.pc; | |
7498 | char *original_function = NULL; | |
7499 | int found; | |
7500 | int i; | |
6c95b8df | 7501 | struct cleanup *old_chain; |
ed0616c6 VP |
7502 | |
7503 | /* If we have explicit pc, don't expand. | |
7504 | If we have no line number, we can't expand. */ | |
7505 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7506 | { | |
7507 | expanded.nelts = 1; | |
7508 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7509 | expanded.sals[0] = sal; | |
7510 | return expanded; | |
7511 | } | |
7512 | ||
7513 | sal.pc = 0; | |
6c95b8df PA |
7514 | |
7515 | old_chain = save_current_space_and_thread (); | |
7516 | ||
7517 | switch_to_program_space_and_thread (sal.pspace); | |
7518 | ||
ed0616c6 | 7519 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7520 | |
7521 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7522 | expanded = expand_line_sal (sal); |
6c95b8df | 7523 | |
ed0616c6 VP |
7524 | if (expanded.nelts == 1) |
7525 | { | |
3dba1c98 JB |
7526 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7527 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7528 | xfree (expanded.sals); |
7529 | expanded.nelts = 1; | |
7530 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7531 | sal.pc = original_pc; | |
7532 | expanded.sals[0] = sal; | |
3dba1c98 | 7533 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7534 | do_cleanups (old_chain); |
ed0616c6 VP |
7535 | return expanded; |
7536 | } | |
7537 | ||
7538 | if (!sal.explicit_line) | |
7539 | { | |
7540 | CORE_ADDR func_addr, func_end; | |
7541 | for (i = 0; i < expanded.nelts; ++i) | |
7542 | { | |
7543 | CORE_ADDR pc = expanded.sals[i].pc; | |
7544 | char *this_function; | |
6c95b8df PA |
7545 | |
7546 | /* We need to switch threads as well since we're about to | |
7547 | read memory. */ | |
7548 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7549 | ||
ed0616c6 VP |
7550 | if (find_pc_partial_function (pc, &this_function, |
7551 | &func_addr, &func_end)) | |
7552 | { | |
059fb39f PM |
7553 | if (this_function |
7554 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7555 | { |
7556 | remove_sal (&expanded, i); | |
7557 | --i; | |
7558 | } | |
ed0616c6 VP |
7559 | } |
7560 | } | |
7561 | } | |
059acae7 UW |
7562 | |
7563 | /* Skip the function prologue if necessary. */ | |
7564 | for (i = 0; i < expanded.nelts; ++i) | |
7565 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7566 | |
6c95b8df PA |
7567 | do_cleanups (old_chain); |
7568 | ||
ed0616c6 VP |
7569 | if (expanded.nelts <= 1) |
7570 | { | |
4a64f543 MS |
7571 | /* This is un ugly workaround. If we get zero expanded sals |
7572 | then something is really wrong. Fix that by returning the | |
7573 | original sal. */ | |
7574 | ||
ed0616c6 VP |
7575 | xfree (expanded.sals); |
7576 | expanded.nelts = 1; | |
7577 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7578 | sal.pc = original_pc; | |
7579 | expanded.sals[0] = sal; | |
7580 | return expanded; | |
7581 | } | |
7582 | ||
7583 | if (original_pc) | |
7584 | { | |
7585 | found = 0; | |
7586 | for (i = 0; i < expanded.nelts; ++i) | |
7587 | if (expanded.sals[i].pc == original_pc) | |
7588 | { | |
7589 | found = 1; | |
7590 | break; | |
7591 | } | |
7592 | gdb_assert (found); | |
7593 | } | |
7594 | ||
7595 | return expanded; | |
7596 | } | |
7597 | ||
018d34a4 VP |
7598 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7599 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7600 | value. COND_STRING, if not NULL, specified the condition to be | |
7601 | used for all breakpoints. Essentially the only case where | |
7602 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7603 | function. In that case, it's still not possible to specify | |
7604 | separate conditions for different overloaded functions, so | |
7605 | we take just a single condition string. | |
7606 | ||
c3f6f71d | 7607 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7608 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7609 | array contents). If the function fails (error() is called), the |
7610 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7611 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7612 | |
7613 | static void | |
8cdf0e15 | 7614 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 TT |
7615 | struct symtabs_and_lines sals, |
7616 | struct linespec_result *canonical, | |
8cdf0e15 VP |
7617 | char *cond_string, |
7618 | enum bptype type, enum bpdisp disposition, | |
7619 | int thread, int task, int ignore_count, | |
7620 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7621 | int enabled, int internal) |
c906108c | 7622 | { |
018d34a4 | 7623 | int i; |
cc59ec59 | 7624 | |
018d34a4 | 7625 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7626 | { |
ed0616c6 VP |
7627 | struct symtabs_and_lines expanded = |
7628 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7629 | |
7efd8fc2 | 7630 | create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i], |
8cdf0e15 | 7631 | cond_string, type, disposition, |
84f4c1fe | 7632 | thread, task, ignore_count, ops, |
56435ebe TT |
7633 | from_tty, enabled, internal, |
7634 | canonical->special_display); | |
c3f6f71d | 7635 | } |
c3f6f71d | 7636 | } |
c906108c | 7637 | |
9998af43 | 7638 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7639 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7640 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7641 | address strings. ADDRESS points to the end of the SAL. |
7642 | ||
7643 | The array and the line spec strings are allocated on the heap, it is | |
7644 | the caller's responsibility to free them. */ | |
c906108c | 7645 | |
b9362cc7 | 7646 | static void |
c3f6f71d JM |
7647 | parse_breakpoint_sals (char **address, |
7648 | struct symtabs_and_lines *sals, | |
58438ac1 | 7649 | struct linespec_result *canonical) |
c3f6f71d JM |
7650 | { |
7651 | char *addr_start = *address; | |
cc59ec59 | 7652 | |
c3f6f71d | 7653 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7654 | breakpoint. */ |
c3f6f71d JM |
7655 | if ((*address) == NULL |
7656 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7657 | { |
7658 | if (default_breakpoint_valid) | |
7659 | { | |
c3f6f71d | 7660 | struct symtab_and_line sal; |
cc59ec59 | 7661 | |
4a64f543 | 7662 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7663 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7664 | xmalloc (sizeof (struct symtab_and_line)); |
7665 | sal.pc = default_breakpoint_address; | |
7666 | sal.line = default_breakpoint_line; | |
7667 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7668 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7669 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7670 | |
4a64f543 MS |
7671 | /* "break" without arguments is equivalent to "break *PC" |
7672 | where PC is the default_breakpoint_address. So make sure | |
7673 | to set sal.explicit_pc to prevent GDB from trying to | |
7674 | expand the list of sals to include all other instances | |
7675 | with the same symtab and line. */ | |
00903456 JK |
7676 | sal.explicit_pc = 1; |
7677 | ||
c3f6f71d JM |
7678 | sals->sals[0] = sal; |
7679 | sals->nelts = 1; | |
c906108c SS |
7680 | } |
7681 | else | |
8a3fe4f8 | 7682 | error (_("No default breakpoint address now.")); |
c906108c SS |
7683 | } |
7684 | else | |
7685 | { | |
c906108c | 7686 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7687 | current_source_symtab (which is decode_line_1's default). |
7688 | This should produce the results we want almost all of the | |
7689 | time while leaving default_breakpoint_* alone. | |
7690 | ||
1aeae86e AF |
7691 | ObjC: However, don't match an Objective-C method name which |
7692 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7693 | |
c214a6fd | 7694 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7695 | |
c906108c | 7696 | if (default_breakpoint_valid |
0378c332 | 7697 | && (!cursal.symtab |
1aeae86e AF |
7698 | || ((strchr ("+-", (*address)[0]) != NULL) |
7699 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7700 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
58438ac1 | 7701 | default_breakpoint_line, canonical); |
c906108c | 7702 | else |
0101ce28 | 7703 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
58438ac1 | 7704 | canonical); |
c906108c | 7705 | } |
4a64f543 | 7706 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7efd8fc2 | 7707 | if (sals->nelts > 0 && canonical->canonical == NULL) |
38a714bb | 7708 | canonical->canonical = xcalloc (sals->nelts, sizeof (char *)); |
c3f6f71d | 7709 | if (addr_start != (*address)) |
c906108c | 7710 | { |
c3f6f71d | 7711 | int i; |
cc59ec59 | 7712 | |
c3f6f71d | 7713 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7714 | { |
4a64f543 | 7715 | /* Add the string if not present. */ |
7efd8fc2 TT |
7716 | if (canonical->canonical[i] == NULL) |
7717 | canonical->canonical[i] = savestring (addr_start, | |
7718 | (*address) - addr_start); | |
c906108c SS |
7719 | } |
7720 | } | |
c3f6f71d | 7721 | } |
c906108c | 7722 | |
c906108c | 7723 | |
c3f6f71d | 7724 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7725 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7726 | |
b9362cc7 | 7727 | static void |
23e7acfb | 7728 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7729 | { |
7730 | int i; | |
cc59ec59 | 7731 | |
c3f6f71d | 7732 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7733 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7734 | } |
7735 | ||
7a697b8d SS |
7736 | /* Fast tracepoints may have restrictions on valid locations. For |
7737 | instance, a fast tracepoint using a jump instead of a trap will | |
7738 | likely have to overwrite more bytes than a trap would, and so can | |
7739 | only be placed where the instruction is longer than the jump, or a | |
7740 | multi-instruction sequence does not have a jump into the middle of | |
7741 | it, etc. */ | |
7742 | ||
7743 | static void | |
7744 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7745 | struct symtabs_and_lines *sals) | |
7746 | { | |
7747 | int i, rslt; | |
7748 | struct symtab_and_line *sal; | |
7749 | char *msg; | |
7750 | struct cleanup *old_chain; | |
7751 | ||
7752 | for (i = 0; i < sals->nelts; i++) | |
7753 | { | |
7754 | sal = &sals->sals[i]; | |
7755 | ||
7756 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7757 | NULL, &msg); | |
7758 | old_chain = make_cleanup (xfree, msg); | |
7759 | ||
7760 | if (!rslt) | |
7761 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7762 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7763 | ||
7764 | do_cleanups (old_chain); | |
7765 | } | |
7766 | } | |
7767 | ||
018d34a4 VP |
7768 | /* Given TOK, a string specification of condition and thread, as |
7769 | accepted by the 'break' command, extract the condition | |
7770 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7771 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7772 | If no condition is found, *COND_STRING is set to NULL. |
7773 | If no thread is found, *THREAD is set to -1. */ | |
7774 | static void | |
7775 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7776 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7777 | { |
7778 | *cond_string = NULL; | |
7779 | *thread = -1; | |
7780 | while (tok && *tok) | |
7781 | { | |
7782 | char *end_tok; | |
7783 | int toklen; | |
7784 | char *cond_start = NULL; | |
7785 | char *cond_end = NULL; | |
cc59ec59 | 7786 | |
e9cafbcc | 7787 | tok = skip_spaces (tok); |
018d34a4 | 7788 | |
e9cafbcc | 7789 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7790 | |
7791 | toklen = end_tok - tok; | |
7792 | ||
7793 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7794 | { | |
f7545552 TT |
7795 | struct expression *expr; |
7796 | ||
018d34a4 | 7797 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7798 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7799 | xfree (expr); | |
018d34a4 VP |
7800 | cond_end = tok; |
7801 | *cond_string = savestring (cond_start, | |
7802 | cond_end - cond_start); | |
7803 | } | |
7804 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7805 | { | |
7806 | char *tmptok; | |
7807 | ||
7808 | tok = end_tok + 1; | |
7809 | tmptok = tok; | |
7810 | *thread = strtol (tok, &tok, 0); | |
7811 | if (tok == tmptok) | |
7812 | error (_("Junk after thread keyword.")); | |
7813 | if (!valid_thread_id (*thread)) | |
7814 | error (_("Unknown thread %d."), *thread); | |
7815 | } | |
4a306c9a JB |
7816 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7817 | { | |
7818 | char *tmptok; | |
7819 | ||
7820 | tok = end_tok + 1; | |
7821 | tmptok = tok; | |
7822 | *task = strtol (tok, &tok, 0); | |
7823 | if (tok == tmptok) | |
7824 | error (_("Junk after task keyword.")); | |
7825 | if (!valid_task_id (*task)) | |
b6199126 | 7826 | error (_("Unknown task %d."), *task); |
4a306c9a | 7827 | } |
018d34a4 VP |
7828 | else |
7829 | error (_("Junk at end of arguments.")); | |
7830 | } | |
7831 | } | |
7832 | ||
0fb4aa4b PA |
7833 | /* Decode a static tracepoint marker spec. */ |
7834 | ||
7835 | static struct symtabs_and_lines | |
7836 | decode_static_tracepoint_spec (char **arg_p) | |
7837 | { | |
7838 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7839 | struct symtabs_and_lines sals; | |
7840 | struct symtab_and_line sal; | |
7841 | struct symbol *sym; | |
7842 | struct cleanup *old_chain; | |
7843 | char *p = &(*arg_p)[3]; | |
7844 | char *endp; | |
7845 | char *marker_str; | |
7846 | int i; | |
7847 | ||
e9cafbcc | 7848 | p = skip_spaces (p); |
0fb4aa4b | 7849 | |
e9cafbcc | 7850 | endp = skip_to_space (p); |
0fb4aa4b PA |
7851 | |
7852 | marker_str = savestring (p, endp - p); | |
7853 | old_chain = make_cleanup (xfree, marker_str); | |
7854 | ||
7855 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7856 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7857 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7858 | ||
7859 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7860 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7861 | ||
7862 | for (i = 0; i < sals.nelts; i++) | |
7863 | { | |
7864 | struct static_tracepoint_marker *marker; | |
7865 | ||
7866 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7867 | ||
7868 | init_sal (&sals.sals[i]); | |
7869 | ||
7870 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7871 | sals.sals[i].pc = marker->address; | |
7872 | ||
7873 | release_static_tracepoint_marker (marker); | |
7874 | } | |
7875 | ||
7876 | do_cleanups (old_chain); | |
7877 | ||
7878 | *arg_p = endp; | |
7879 | return sals; | |
7880 | } | |
7881 | ||
fd9b8c24 PA |
7882 | /* Set a breakpoint. This function is shared between CLI and MI |
7883 | functions for setting a breakpoint. This function has two major | |
7884 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7885 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7886 | breakpoint location, address and thread. Otherwise, ARG is just |
7887 | the location of breakpoint, with condition and thread specified by | |
7888 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7889 | the breakpoint number will be allocated from the internal | |
7890 | breakpoint count. Returns true if any breakpoint was created; | |
7891 | false otherwise. */ | |
0101ce28 | 7892 | |
8cdf0e15 VP |
7893 | int |
7894 | create_breakpoint (struct gdbarch *gdbarch, | |
7895 | char *arg, char *cond_string, int thread, | |
7896 | int parse_condition_and_thread, | |
0fb4aa4b | 7897 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7898 | int ignore_count, |
7899 | enum auto_boolean pending_break_support, | |
7900 | struct breakpoint_ops *ops, | |
84f4c1fe | 7901 | int from_tty, int enabled, int internal) |
c3f6f71d | 7902 | { |
b78a6381 | 7903 | volatile struct gdb_exception e; |
c3f6f71d | 7904 | struct symtabs_and_lines sals; |
0101ce28 | 7905 | struct symtab_and_line pending_sal; |
0101ce28 | 7906 | char *copy_arg; |
c3f6f71d | 7907 | char *addr_start = arg; |
7efd8fc2 | 7908 | struct linespec_result canonical; |
c3f6f71d | 7909 | struct cleanup *old_chain; |
80c99de1 | 7910 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7911 | int i; |
0101ce28 | 7912 | int pending = 0; |
4a306c9a | 7913 | int task = 0; |
86b17b60 | 7914 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7915 | |
c3f6f71d JM |
7916 | sals.sals = NULL; |
7917 | sals.nelts = 0; | |
7efd8fc2 | 7918 | init_linespec_result (&canonical); |
c3f6f71d | 7919 | |
0fb4aa4b PA |
7920 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7921 | { | |
7922 | int i; | |
7923 | ||
7924 | sals = decode_static_tracepoint_spec (&arg); | |
7925 | ||
7926 | copy_arg = savestring (addr_start, arg - addr_start); | |
38a714bb | 7927 | canonical.canonical = xcalloc (sals.nelts, sizeof (char *)); |
0fb4aa4b | 7928 | for (i = 0; i < sals.nelts; i++) |
7efd8fc2 | 7929 | canonical.canonical[i] = xstrdup (copy_arg); |
0fb4aa4b PA |
7930 | goto done; |
7931 | } | |
7932 | ||
b78a6381 TT |
7933 | TRY_CATCH (e, RETURN_MASK_ALL) |
7934 | { | |
58438ac1 | 7935 | parse_breakpoint_sals (&arg, &sals, &canonical); |
b78a6381 | 7936 | } |
0101ce28 JJ |
7937 | |
7938 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7939 | switch (e.reason) |
0101ce28 | 7940 | { |
05ff989b | 7941 | case RETURN_QUIT: |
98deb0da | 7942 | throw_exception (e); |
05ff989b AC |
7943 | case RETURN_ERROR: |
7944 | switch (e.error) | |
0101ce28 | 7945 | { |
05ff989b | 7946 | case NOT_FOUND_ERROR: |
0101ce28 | 7947 | |
05ff989b AC |
7948 | /* If pending breakpoint support is turned off, throw |
7949 | error. */ | |
fa8d40ab JJ |
7950 | |
7951 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7952 | throw_exception (e); |
7953 | ||
7954 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7955 | |
05ff989b AC |
7956 | /* If pending breakpoint support is auto query and the user |
7957 | selects no, then simply return the error code. */ | |
059fb39f | 7958 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7959 | && !nquery (_("Make breakpoint pending on " |
7960 | "future shared library load? "))) | |
fd9b8c24 | 7961 | return 0; |
fa8d40ab | 7962 | |
05ff989b AC |
7963 | /* At this point, either the user was queried about setting |
7964 | a pending breakpoint and selected yes, or pending | |
7965 | breakpoint behavior is on and thus a pending breakpoint | |
7966 | is defaulted on behalf of the user. */ | |
0101ce28 | 7967 | copy_arg = xstrdup (addr_start); |
7efd8fc2 | 7968 | canonical.canonical = ©_arg; |
0101ce28 JJ |
7969 | sals.nelts = 1; |
7970 | sals.sals = &pending_sal; | |
7971 | pending_sal.pc = 0; | |
7972 | pending = 1; | |
05ff989b AC |
7973 | break; |
7974 | default: | |
98deb0da | 7975 | throw_exception (e); |
0101ce28 | 7976 | } |
2abae994 | 7977 | break; |
05ff989b AC |
7978 | default: |
7979 | if (!sals.nelts) | |
fd9b8c24 | 7980 | return 0; |
0101ce28 | 7981 | } |
c3f6f71d | 7982 | |
0fb4aa4b PA |
7983 | done: |
7984 | ||
4a64f543 | 7985 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7986 | old_chain = make_cleanup (null_cleanup, 0); |
7987 | ||
0101ce28 JJ |
7988 | if (!pending) |
7989 | { | |
7990 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7991 | make_cleanup (xfree, sals.sals); | |
7992 | ||
7efd8fc2 TT |
7993 | /* Cleanup the canonical array but not its contents. */ |
7994 | make_cleanup (xfree, canonical.canonical); | |
0101ce28 | 7995 | } |
c3f6f71d | 7996 | |
c3f6f71d JM |
7997 | /* ----------------------------- SNIP ----------------------------- |
7998 | Anything added to the cleanup chain beyond this point is assumed | |
7999 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
8000 | then the memory is not reclaimed. */ |
8001 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 8002 | |
7efd8fc2 | 8003 | /* Mark the contents of the canonical for cleanup. These go on |
80c99de1 | 8004 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
8005 | for (i = 0; i < sals.nelts; i++) |
8006 | { | |
7efd8fc2 TT |
8007 | if (canonical.canonical[i] != NULL) |
8008 | make_cleanup (xfree, canonical.canonical[i]); | |
c3f6f71d JM |
8009 | } |
8010 | ||
8011 | /* Resolve all line numbers to PC's and verify that the addresses | |
8012 | are ok for the target. */ | |
0101ce28 | 8013 | if (!pending) |
23e7acfb | 8014 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 8015 | |
7a697b8d SS |
8016 | /* Fast tracepoints may have additional restrictions on location. */ |
8017 | if (type_wanted == bp_fast_tracepoint) | |
8018 | check_fast_tracepoint_sals (gdbarch, &sals); | |
8019 | ||
c3f6f71d JM |
8020 | /* Verify that condition can be parsed, before setting any |
8021 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8022 | breakpoint. */ |
0101ce28 | 8023 | if (!pending) |
c3f6f71d | 8024 | { |
2f069f6f | 8025 | if (parse_condition_and_thread) |
72b2ff0e VP |
8026 | { |
8027 | /* Here we only parse 'arg' to separate condition | |
8028 | from thread number, so parsing in context of first | |
8029 | sal is OK. When setting the breakpoint we'll | |
8030 | re-parse it in context of each sal. */ | |
8031 | cond_string = NULL; | |
8032 | thread = -1; | |
4a306c9a JB |
8033 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
8034 | &thread, &task); | |
72b2ff0e VP |
8035 | if (cond_string) |
8036 | make_cleanup (xfree, cond_string); | |
8037 | } | |
2f069f6f | 8038 | else |
72b2ff0e VP |
8039 | { |
8040 | /* Create a private copy of condition string. */ | |
8041 | if (cond_string) | |
8042 | { | |
8043 | cond_string = xstrdup (cond_string); | |
8044 | make_cleanup (xfree, cond_string); | |
8045 | } | |
8046 | } | |
0fb4aa4b PA |
8047 | |
8048 | /* If the user is creating a static tracepoint by marker id | |
8049 | (strace -m MARKER_ID), then store the sals index, so that | |
8050 | breakpoint_re_set can try to match up which of the newly | |
8051 | found markers corresponds to this one, and, don't try to | |
8052 | expand multiple locations for each sal, given than SALS | |
8053 | already should contain all sals for MARKER_ID. */ | |
8054 | if (type_wanted == bp_static_tracepoint | |
7efd8fc2 | 8055 | && is_marker_spec (canonical.canonical[0])) |
0fb4aa4b PA |
8056 | { |
8057 | int i; | |
8058 | ||
8059 | for (i = 0; i < sals.nelts; ++i) | |
8060 | { | |
8061 | struct symtabs_and_lines expanded; | |
8062 | struct breakpoint *tp; | |
8063 | struct cleanup *old_chain; | |
8064 | ||
8065 | expanded.nelts = 1; | |
8066 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
8067 | expanded.sals[0] = sals.sals[i]; | |
8068 | old_chain = make_cleanup (xfree, expanded.sals); | |
8069 | ||
7efd8fc2 | 8070 | create_breakpoint_sal (gdbarch, expanded, canonical.canonical[i], |
0fb4aa4b PA |
8071 | cond_string, type_wanted, |
8072 | tempflag ? disp_del : disp_donttouch, | |
8073 | thread, task, ignore_count, ops, | |
56435ebe TT |
8074 | from_tty, enabled, internal, |
8075 | canonical.special_display); | |
0fb4aa4b PA |
8076 | |
8077 | do_cleanups (old_chain); | |
8078 | ||
8079 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
8080 | if (internal) |
8081 | tp = get_breakpoint (internal_breakpoint_number); | |
8082 | else | |
8083 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
8084 | gdb_assert (tp != NULL); |
8085 | ||
8086 | /* Given that its possible to have multiple markers with | |
8087 | the same string id, if the user is creating a static | |
8088 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
8089 | store the sals index, so that breakpoint_re_set can | |
8090 | try to match up which of the newly found markers | |
8091 | corresponds to this one */ | |
8092 | tp->static_trace_marker_id_idx = i; | |
8093 | } | |
8094 | } | |
8095 | else | |
7efd8fc2 | 8096 | create_breakpoints_sal (gdbarch, sals, &canonical, cond_string, |
3e43a32a MS |
8097 | type_wanted, |
8098 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 8099 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 8100 | enabled, internal); |
c906108c | 8101 | } |
0101ce28 JJ |
8102 | else |
8103 | { | |
0101ce28 JJ |
8104 | struct breakpoint *b; |
8105 | ||
0101ce28 JJ |
8106 | make_cleanup (xfree, copy_arg); |
8107 | ||
a6d9a66e | 8108 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 8109 | set_breakpoint_number (internal, b); |
72b2ff0e | 8110 | b->thread = -1; |
7efd8fc2 | 8111 | b->addr_string = canonical.canonical[0]; |
72b2ff0e | 8112 | b->cond_string = NULL; |
0101ce28 | 8113 | b->ignore_count = ignore_count; |
0101ce28 | 8114 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8115 | b->condition_not_parsed = 1; |
604133b5 | 8116 | b->ops = ops; |
41447f92 | 8117 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 8118 | b->pspace = current_program_space; |
84f4c1fe | 8119 | b->py_bp_object = NULL; |
74960c60 | 8120 | |
6c95b8df | 8121 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
8122 | && (b->type == bp_breakpoint |
8123 | || b->type == bp_hardware_breakpoint)) | |
8124 | b->enable_state = bp_startup_disabled; | |
8125 | ||
8d3788bd | 8126 | if (!internal) |
84f4c1fe PM |
8127 | /* Do not mention breakpoints with a negative number, |
8128 | but do notify observers. */ | |
8d3788bd VP |
8129 | mention (b); |
8130 | observer_notify_breakpoint_created (b); | |
0101ce28 JJ |
8131 | } |
8132 | ||
c3f6f71d | 8133 | if (sals.nelts > 1) |
95a42b64 | 8134 | { |
3e43a32a MS |
8135 | warning (_("Multiple breakpoints were set.\nUse the " |
8136 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8137 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8138 | } |
8139 | ||
80c99de1 PA |
8140 | /* That's it. Discard the cleanups for data inserted into the |
8141 | breakpoint. */ | |
8142 | discard_cleanups (bkpt_chain); | |
8143 | /* But cleanup everything else. */ | |
c3f6f71d | 8144 | do_cleanups (old_chain); |
217dc9e2 | 8145 | |
80c99de1 | 8146 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 8147 | update_global_location_list (1); |
fd9b8c24 PA |
8148 | |
8149 | return 1; | |
c3f6f71d | 8150 | } |
c906108c | 8151 | |
72b2ff0e VP |
8152 | /* Set a breakpoint. |
8153 | ARG is a string describing breakpoint address, | |
8154 | condition, and thread. | |
8155 | FLAG specifies if a breakpoint is hardware on, | |
8156 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8157 | and BP_TEMPFLAG. */ | |
8158 | ||
98deb0da | 8159 | static void |
72b2ff0e | 8160 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 8161 | { |
72b2ff0e | 8162 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8163 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8164 | ? bp_hardware_breakpoint | |
8165 | : bp_breakpoint); | |
c3f6f71d | 8166 | |
8cdf0e15 VP |
8167 | create_breakpoint (get_current_arch (), |
8168 | arg, | |
8169 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 8170 | tempflag, type_wanted, |
8cdf0e15 VP |
8171 | 0 /* Ignore count */, |
8172 | pending_break_support, | |
8173 | NULL /* breakpoint_ops */, | |
8174 | from_tty, | |
84f4c1fe PM |
8175 | 1 /* enabled */, |
8176 | 0 /* internal */); | |
c906108c SS |
8177 | } |
8178 | ||
72b2ff0e | 8179 | |
c906108c SS |
8180 | /* Helper function for break_command_1 and disassemble_command. */ |
8181 | ||
8182 | void | |
fba45db2 | 8183 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8184 | { |
8185 | CORE_ADDR pc; | |
8186 | ||
8187 | if (sal->pc == 0 && sal->symtab != NULL) | |
8188 | { | |
8189 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 8190 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
8191 | sal->line, sal->symtab->filename); |
8192 | sal->pc = pc; | |
6a048695 | 8193 | |
4a64f543 MS |
8194 | /* If this SAL corresponds to a breakpoint inserted using a line |
8195 | number, then skip the function prologue if necessary. */ | |
6a048695 | 8196 | if (sal->explicit_line) |
059acae7 | 8197 | skip_prologue_sal (sal); |
c906108c SS |
8198 | } |
8199 | ||
8200 | if (sal->section == 0 && sal->symtab != NULL) | |
8201 | { | |
8202 | struct blockvector *bv; | |
c5aa993b JM |
8203 | struct block *b; |
8204 | struct symbol *sym; | |
c906108c | 8205 | |
801e3a5b | 8206 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
8207 | if (bv != NULL) |
8208 | { | |
7f0df278 | 8209 | sym = block_linkage_function (b); |
c906108c SS |
8210 | if (sym != NULL) |
8211 | { | |
8212 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 8213 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
8214 | } |
8215 | else | |
8216 | { | |
4a64f543 MS |
8217 | /* It really is worthwhile to have the section, so we'll |
8218 | just have to look harder. This case can be executed | |
8219 | if we have line numbers but no functions (as can | |
8220 | happen in assembly source). */ | |
c906108c | 8221 | |
c5aa993b | 8222 | struct minimal_symbol *msym; |
6c95b8df PA |
8223 | struct cleanup *old_chain = save_current_space_and_thread (); |
8224 | ||
8225 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8226 | |
8227 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8228 | if (msym) | |
714835d5 | 8229 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8230 | |
8231 | do_cleanups (old_chain); | |
c906108c SS |
8232 | } |
8233 | } | |
8234 | } | |
8235 | } | |
8236 | ||
8237 | void | |
fba45db2 | 8238 | break_command (char *arg, int from_tty) |
c906108c | 8239 | { |
db107f19 | 8240 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8241 | } |
8242 | ||
c906108c | 8243 | void |
fba45db2 | 8244 | tbreak_command (char *arg, int from_tty) |
c906108c | 8245 | { |
db107f19 | 8246 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8247 | } |
8248 | ||
c906108c | 8249 | static void |
fba45db2 | 8250 | hbreak_command (char *arg, int from_tty) |
c906108c | 8251 | { |
db107f19 | 8252 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8253 | } |
8254 | ||
8255 | static void | |
fba45db2 | 8256 | thbreak_command (char *arg, int from_tty) |
c906108c | 8257 | { |
db107f19 | 8258 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8259 | } |
8260 | ||
8261 | static void | |
fba45db2 | 8262 | stop_command (char *arg, int from_tty) |
c906108c | 8263 | { |
a3f17187 | 8264 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8265 | Usage: stop in <function | address>\n\ |
a3f17187 | 8266 | stop at <line>\n")); |
c906108c SS |
8267 | } |
8268 | ||
8269 | static void | |
fba45db2 | 8270 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8271 | { |
8272 | int badInput = 0; | |
8273 | ||
c5aa993b | 8274 | if (arg == (char *) NULL) |
c906108c SS |
8275 | badInput = 1; |
8276 | else if (*arg != '*') | |
8277 | { | |
8278 | char *argptr = arg; | |
8279 | int hasColon = 0; | |
8280 | ||
4a64f543 | 8281 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8282 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8283 | function/method name. */ |
c906108c | 8284 | while (*argptr && !hasColon) |
c5aa993b JM |
8285 | { |
8286 | hasColon = (*argptr == ':'); | |
8287 | argptr++; | |
8288 | } | |
c906108c SS |
8289 | |
8290 | if (hasColon) | |
c5aa993b | 8291 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8292 | else |
c5aa993b | 8293 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8294 | } |
8295 | ||
8296 | if (badInput) | |
a3f17187 | 8297 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8298 | else |
db107f19 | 8299 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8300 | } |
8301 | ||
8302 | static void | |
fba45db2 | 8303 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8304 | { |
8305 | int badInput = 0; | |
8306 | ||
c5aa993b | 8307 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8308 | badInput = 1; |
8309 | else | |
8310 | { | |
8311 | char *argptr = arg; | |
8312 | int hasColon = 0; | |
8313 | ||
4a64f543 MS |
8314 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8315 | it is probably a line number. */ | |
c906108c | 8316 | while (*argptr && !hasColon) |
c5aa993b JM |
8317 | { |
8318 | hasColon = (*argptr == ':'); | |
8319 | argptr++; | |
8320 | } | |
c906108c SS |
8321 | |
8322 | if (hasColon) | |
c5aa993b | 8323 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8324 | else |
c5aa993b | 8325 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8326 | } |
8327 | ||
8328 | if (badInput) | |
a3f17187 | 8329 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8330 | else |
db107f19 | 8331 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8332 | } |
8333 | ||
f1310107 TJB |
8334 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
8335 | ranged breakpoints. */ | |
8336 | ||
8337 | static int | |
8338 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
8339 | struct address_space *aspace, | |
8340 | CORE_ADDR bp_addr) | |
8341 | { | |
8342 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, | |
8343 | bl->length, aspace, bp_addr); | |
8344 | } | |
8345 | ||
8346 | /* Implement the "resources_needed" breakpoint_ops method for | |
8347 | ranged breakpoints. */ | |
8348 | ||
8349 | static int | |
8350 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
8351 | { | |
8352 | return target_ranged_break_num_registers (); | |
8353 | } | |
8354 | ||
8355 | /* Implement the "print_it" breakpoint_ops method for | |
8356 | ranged breakpoints. */ | |
8357 | ||
8358 | static enum print_stop_action | |
8359 | print_it_ranged_breakpoint (struct breakpoint *b) | |
8360 | { | |
8361 | struct bp_location *bl = b->loc; | |
8362 | ||
8363 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8364 | ||
8365 | /* Ranged breakpoints have only one location. */ | |
8366 | gdb_assert (bl && bl->next == NULL); | |
8367 | ||
8368 | annotate_breakpoint (b->number); | |
8369 | if (b->disposition == disp_del) | |
8370 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
8371 | else | |
8372 | ui_out_text (uiout, "\nRanged breakpoint "); | |
8373 | if (ui_out_is_mi_like_p (uiout)) | |
8374 | { | |
8375 | ui_out_field_string (uiout, "reason", | |
8376 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8377 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8378 | } | |
8379 | ui_out_field_int (uiout, "bkptno", b->number); | |
8380 | ui_out_text (uiout, ", "); | |
8381 | ||
8382 | return PRINT_SRC_AND_LOC; | |
8383 | } | |
8384 | ||
8385 | /* Implement the "print_one" breakpoint_ops method for | |
8386 | ranged breakpoints. */ | |
8387 | ||
8388 | static void | |
8389 | print_one_ranged_breakpoint (struct breakpoint *b, | |
8390 | struct bp_location **last_loc) | |
8391 | { | |
8392 | struct bp_location *bl = b->loc; | |
8393 | struct value_print_options opts; | |
8394 | ||
8395 | /* Ranged breakpoints have only one location. */ | |
8396 | gdb_assert (bl && bl->next == NULL); | |
8397 | ||
8398 | get_user_print_options (&opts); | |
8399 | ||
8400 | if (opts.addressprint) | |
8401 | /* We don't print the address range here, it will be printed later | |
8402 | by print_one_detail_ranged_breakpoint. */ | |
8403 | ui_out_field_skip (uiout, "addr"); | |
8404 | annotate_field (5); | |
8405 | print_breakpoint_location (b, bl); | |
8406 | *last_loc = bl; | |
8407 | } | |
8408 | ||
8409 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8410 | ranged breakpoints. */ | |
8411 | ||
8412 | static void | |
8413 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
8414 | struct ui_out *uiout) | |
8415 | { | |
8416 | CORE_ADDR address_start, address_end; | |
8417 | struct bp_location *bl = b->loc; | |
8418 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
8419 | struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb); | |
8420 | ||
8421 | gdb_assert (bl); | |
8422 | ||
8423 | address_start = bl->address; | |
8424 | address_end = address_start + bl->length - 1; | |
8425 | ||
8426 | ui_out_text (uiout, "\taddress range: "); | |
8427 | fprintf_unfiltered (stb->stream, "[%s, %s]", | |
8428 | print_core_address (bl->gdbarch, address_start), | |
8429 | print_core_address (bl->gdbarch, address_end)); | |
8430 | ui_out_field_stream (uiout, "addr", stb); | |
8431 | ui_out_text (uiout, "\n"); | |
8432 | ||
8433 | do_cleanups (cleanup); | |
8434 | } | |
8435 | ||
8436 | /* Implement the "print_mention" breakpoint_ops method for | |
8437 | ranged breakpoints. */ | |
8438 | ||
8439 | static void | |
8440 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
8441 | { | |
8442 | struct bp_location *bl = b->loc; | |
8443 | ||
8444 | gdb_assert (bl); | |
8445 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8446 | ||
8447 | if (ui_out_is_mi_like_p (uiout)) | |
8448 | return; | |
8449 | ||
8450 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
8451 | b->number, paddress (bl->gdbarch, bl->address), | |
8452 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
8453 | } | |
8454 | ||
8455 | /* Implement the "print_recreate" breakpoint_ops method for | |
8456 | ranged breakpoints. */ | |
8457 | ||
8458 | static void | |
8459 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
8460 | { | |
8461 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
8462 | b->addr_string_range_end); | |
8463 | } | |
8464 | ||
8465 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
8466 | ||
8467 | static struct breakpoint_ops ranged_breakpoint_ops = | |
8468 | { | |
8469 | NULL, /* insert */ | |
8470 | NULL, /* remove */ | |
8471 | breakpoint_hit_ranged_breakpoint, | |
8472 | resources_needed_ranged_breakpoint, | |
8473 | print_it_ranged_breakpoint, | |
8474 | print_one_ranged_breakpoint, | |
8475 | print_one_detail_ranged_breakpoint, | |
8476 | print_mention_ranged_breakpoint, | |
8477 | print_recreate_ranged_breakpoint | |
8478 | }; | |
8479 | ||
8480 | /* Find the address where the end of the breakpoint range should be | |
8481 | placed, given the SAL of the end of the range. This is so that if | |
8482 | the user provides a line number, the end of the range is set to the | |
8483 | last instruction of the given line. */ | |
8484 | ||
8485 | static CORE_ADDR | |
8486 | find_breakpoint_range_end (struct symtab_and_line sal) | |
8487 | { | |
8488 | CORE_ADDR end; | |
8489 | ||
8490 | /* If the user provided a PC value, use it. Otherwise, | |
8491 | find the address of the end of the given location. */ | |
8492 | if (sal.explicit_pc) | |
8493 | end = sal.pc; | |
8494 | else | |
8495 | { | |
8496 | int ret; | |
8497 | CORE_ADDR start; | |
8498 | ||
8499 | ret = find_line_pc_range (sal, &start, &end); | |
8500 | if (!ret) | |
8501 | error (_("Could not find location of the end of the range.")); | |
8502 | ||
8503 | /* find_line_pc_range returns the start of the next line. */ | |
8504 | end--; | |
8505 | } | |
8506 | ||
8507 | return end; | |
8508 | } | |
8509 | ||
8510 | /* Implement the "break-range" CLI command. */ | |
8511 | ||
8512 | static void | |
8513 | break_range_command (char *arg, int from_tty) | |
8514 | { | |
8515 | char *arg_start, *addr_string_start, *addr_string_end; | |
8516 | struct linespec_result canonical_start, canonical_end; | |
8517 | int bp_count, can_use_bp, length; | |
8518 | CORE_ADDR end; | |
8519 | struct breakpoint *b; | |
8520 | struct symtab_and_line sal_start, sal_end; | |
8521 | struct symtabs_and_lines sals_start, sals_end; | |
8522 | struct cleanup *cleanup_bkpt; | |
8523 | ||
8524 | /* We don't support software ranged breakpoints. */ | |
8525 | if (target_ranged_break_num_registers () < 0) | |
8526 | error (_("This target does not support hardware ranged breakpoints.")); | |
8527 | ||
8528 | bp_count = hw_breakpoint_used_count (); | |
8529 | bp_count += target_ranged_break_num_registers (); | |
8530 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
8531 | bp_count, 0); | |
8532 | if (can_use_bp < 0) | |
8533 | error (_("Hardware breakpoints used exceeds limit.")); | |
8534 | ||
8535 | if (arg == NULL || arg[0] == '\0') | |
8536 | error(_("No address range specified.")); | |
8537 | ||
8538 | sals_start.sals = NULL; | |
8539 | sals_start.nelts = 0; | |
8540 | init_linespec_result (&canonical_start); | |
8541 | ||
8542 | while (*arg == ' ' || *arg == '\t') | |
8543 | arg++; | |
8544 | ||
58438ac1 | 8545 | parse_breakpoint_sals (&arg, &sals_start, &canonical_start); |
f1310107 TJB |
8546 | |
8547 | sal_start = sals_start.sals[0]; | |
8548 | addr_string_start = canonical_start.canonical[0]; | |
8549 | cleanup_bkpt = make_cleanup (xfree, addr_string_start); | |
8550 | xfree (sals_start.sals); | |
8551 | xfree (canonical_start.canonical); | |
8552 | ||
8553 | if (arg[0] != ',') | |
8554 | error (_("Too few arguments.")); | |
8555 | else if (sals_start.nelts == 0) | |
8556 | error (_("Could not find location of the beginning of the range.")); | |
8557 | else if (sals_start.nelts != 1) | |
8558 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8559 | ||
8560 | resolve_sal_pc (&sal_start); | |
8561 | ||
8562 | arg++; /* Skip the comma. */ | |
8563 | while (*arg == ' ' || *arg == '\t') | |
8564 | arg++; | |
8565 | ||
8566 | /* Parse the end location. */ | |
8567 | ||
8568 | sals_end.sals = NULL; | |
8569 | sals_end.nelts = 0; | |
8570 | init_linespec_result (&canonical_end); | |
8571 | arg_start = arg; | |
8572 | ||
423f41a5 | 8573 | /* We call decode_line_1 directly here instead of using |
f1310107 TJB |
8574 | parse_breakpoint_sals because we need to specify the start location's |
8575 | symtab and line as the default symtab and line for the end of the | |
8576 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
8577 | where +14 means 14 lines from the start location. */ | |
8578 | sals_end = decode_line_1 (&arg, 1, sal_start.symtab, sal_start.line, | |
58438ac1 | 8579 | &canonical_end); |
f1310107 TJB |
8580 | |
8581 | /* canonical_end can be NULL if it was of the form "*0xdeadbeef". */ | |
8582 | if (canonical_end.canonical == NULL) | |
38a714bb | 8583 | canonical_end.canonical = xcalloc (1, sizeof (char *)); |
f1310107 TJB |
8584 | /* Add the string if not present. */ |
8585 | if (arg_start != arg && canonical_end.canonical[0] == NULL) | |
8586 | canonical_end.canonical[0] = savestring (arg_start, arg - arg_start); | |
8587 | ||
8588 | sal_end = sals_end.sals[0]; | |
8589 | addr_string_end = canonical_end.canonical[0]; | |
8590 | make_cleanup (xfree, addr_string_end); | |
8591 | xfree (sals_end.sals); | |
8592 | xfree (canonical_end.canonical); | |
8593 | ||
8594 | if (sals_end.nelts == 0) | |
8595 | error (_("Could not find location of the end of the range.")); | |
8596 | else if (sals_end.nelts != 1) | |
8597 | error (_("Cannot create a ranged breakpoint with multiple locations.")); | |
8598 | ||
8599 | resolve_sal_pc (&sal_end); | |
8600 | ||
8601 | end = find_breakpoint_range_end (sal_end); | |
8602 | if (sal_start.pc > end) | |
8603 | error (_("Invalid address range, end preceeds start.")); | |
8604 | ||
8605 | length = end - sal_start.pc + 1; | |
8606 | if (length < 0) | |
8607 | /* Length overflowed. */ | |
8608 | error (_("Address range too large.")); | |
8609 | else if (length == 1) | |
8610 | { | |
8611 | /* This range is simple enough to be handled by | |
8612 | the `hbreak' command. */ | |
8613 | hbreak_command (addr_string_start, 1); | |
8614 | ||
8615 | do_cleanups (cleanup_bkpt); | |
8616 | ||
8617 | return; | |
8618 | } | |
8619 | ||
8620 | /* Now set up the breakpoint. */ | |
8621 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
8622 | bp_hardware_breakpoint); | |
8623 | set_breakpoint_count (breakpoint_count + 1); | |
8624 | b->number = breakpoint_count; | |
8625 | b->disposition = disp_donttouch; | |
8626 | b->addr_string = addr_string_start; | |
8627 | b->addr_string_range_end = addr_string_end; | |
8628 | b->ops = &ranged_breakpoint_ops; | |
8629 | b->loc->length = length; | |
8630 | ||
8631 | discard_cleanups (cleanup_bkpt); | |
8632 | ||
8633 | mention (b); | |
8d3788bd | 8634 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
8635 | update_global_location_list (1); |
8636 | } | |
8637 | ||
4a64f543 MS |
8638 | /* Return non-zero if EXP is verified as constant. Returned zero |
8639 | means EXP is variable. Also the constant detection may fail for | |
8640 | some constant expressions and in such case still falsely return | |
8641 | zero. */ | |
65d79d4b SDJ |
8642 | static int |
8643 | watchpoint_exp_is_const (const struct expression *exp) | |
8644 | { | |
8645 | int i = exp->nelts; | |
8646 | ||
8647 | while (i > 0) | |
8648 | { | |
8649 | int oplenp, argsp; | |
8650 | ||
8651 | /* We are only interested in the descriptor of each element. */ | |
8652 | operator_length (exp, i, &oplenp, &argsp); | |
8653 | i -= oplenp; | |
8654 | ||
8655 | switch (exp->elts[i].opcode) | |
8656 | { | |
8657 | case BINOP_ADD: | |
8658 | case BINOP_SUB: | |
8659 | case BINOP_MUL: | |
8660 | case BINOP_DIV: | |
8661 | case BINOP_REM: | |
8662 | case BINOP_MOD: | |
8663 | case BINOP_LSH: | |
8664 | case BINOP_RSH: | |
8665 | case BINOP_LOGICAL_AND: | |
8666 | case BINOP_LOGICAL_OR: | |
8667 | case BINOP_BITWISE_AND: | |
8668 | case BINOP_BITWISE_IOR: | |
8669 | case BINOP_BITWISE_XOR: | |
8670 | case BINOP_EQUAL: | |
8671 | case BINOP_NOTEQUAL: | |
8672 | case BINOP_LESS: | |
8673 | case BINOP_GTR: | |
8674 | case BINOP_LEQ: | |
8675 | case BINOP_GEQ: | |
8676 | case BINOP_REPEAT: | |
8677 | case BINOP_COMMA: | |
8678 | case BINOP_EXP: | |
8679 | case BINOP_MIN: | |
8680 | case BINOP_MAX: | |
8681 | case BINOP_INTDIV: | |
8682 | case BINOP_CONCAT: | |
8683 | case BINOP_IN: | |
8684 | case BINOP_RANGE: | |
8685 | case TERNOP_COND: | |
8686 | case TERNOP_SLICE: | |
8687 | case TERNOP_SLICE_COUNT: | |
8688 | ||
8689 | case OP_LONG: | |
8690 | case OP_DOUBLE: | |
8691 | case OP_DECFLOAT: | |
8692 | case OP_LAST: | |
8693 | case OP_COMPLEX: | |
8694 | case OP_STRING: | |
8695 | case OP_BITSTRING: | |
8696 | case OP_ARRAY: | |
8697 | case OP_TYPE: | |
8698 | case OP_NAME: | |
8699 | case OP_OBJC_NSSTRING: | |
8700 | ||
8701 | case UNOP_NEG: | |
8702 | case UNOP_LOGICAL_NOT: | |
8703 | case UNOP_COMPLEMENT: | |
8704 | case UNOP_ADDR: | |
8705 | case UNOP_HIGH: | |
4a64f543 MS |
8706 | /* Unary, binary and ternary operators: We have to check |
8707 | their operands. If they are constant, then so is the | |
8708 | result of that operation. For instance, if A and B are | |
8709 | determined to be constants, then so is "A + B". | |
8710 | ||
8711 | UNOP_IND is one exception to the rule above, because the | |
8712 | value of *ADDR is not necessarily a constant, even when | |
8713 | ADDR is. */ | |
65d79d4b SDJ |
8714 | break; |
8715 | ||
8716 | case OP_VAR_VALUE: | |
8717 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8718 | |
65d79d4b | 8719 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8720 | possible that a buggy compiler could mark a variable as |
8721 | constant even when it is not, and TYPE_CONST would return | |
8722 | true in this case, while SYMBOL_CLASS wouldn't. | |
8723 | ||
8724 | We also have to check for function symbols because they | |
8725 | are always constant. */ | |
65d79d4b SDJ |
8726 | { |
8727 | struct symbol *s = exp->elts[i + 2].symbol; | |
8728 | ||
8729 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8730 | && SYMBOL_CLASS (s) != LOC_CONST | |
8731 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8732 | return 0; | |
8733 | break; | |
8734 | } | |
8735 | ||
8736 | /* The default action is to return 0 because we are using | |
8737 | the optimistic approach here: If we don't know something, | |
8738 | then it is not a constant. */ | |
8739 | default: | |
8740 | return 0; | |
8741 | } | |
8742 | } | |
8743 | ||
8744 | return 1; | |
8745 | } | |
8746 | ||
77b06cd7 TJB |
8747 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8748 | ||
8749 | static int | |
8750 | insert_watchpoint (struct bp_location *bl) | |
8751 | { | |
e09342b5 TJB |
8752 | int length = bl->owner->exact? 1 : bl->length; |
8753 | ||
8754 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
8755 | bl->owner->cond_exp); | |
77b06cd7 TJB |
8756 | } |
8757 | ||
8758 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8759 | ||
8760 | static int | |
8761 | remove_watchpoint (struct bp_location *bl) | |
8762 | { | |
e09342b5 TJB |
8763 | int length = bl->owner->exact? 1 : bl->length; |
8764 | ||
8765 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
8766 | bl->owner->cond_exp); | |
8767 | } | |
8768 | ||
8769 | /* Implement the "resources_needed" breakpoint_ops method for | |
8770 | hardware watchpoints. */ | |
8771 | ||
8772 | static int | |
8773 | resources_needed_watchpoint (const struct bp_location *bl) | |
8774 | { | |
90e4670f | 8775 | int length = bl->owner->exact? 1 : bl->length; |
e09342b5 | 8776 | |
90e4670f | 8777 | return target_region_ok_for_hw_watchpoint (bl->address, length); |
77b06cd7 TJB |
8778 | } |
8779 | ||
8780 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8781 | ||
8782 | static struct breakpoint_ops watchpoint_breakpoint_ops = | |
8783 | { | |
8784 | insert_watchpoint, | |
8785 | remove_watchpoint, | |
8786 | NULL, /* breakpoint_hit */ | |
e09342b5 | 8787 | resources_needed_watchpoint, |
77b06cd7 TJB |
8788 | NULL, /* print_it */ |
8789 | NULL, /* print_one */ | |
f1310107 | 8790 | NULL, /* print_one_detail */ |
77b06cd7 TJB |
8791 | NULL, /* print_mention */ |
8792 | NULL /* print_recreate */ | |
8793 | }; | |
8794 | ||
53a5351d JM |
8795 | /* accessflag: hw_write: watch write, |
8796 | hw_read: watch read, | |
8797 | hw_access: watch access (read or write) */ | |
c906108c | 8798 | static void |
84f4c1fe PM |
8799 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8800 | int just_location, int internal) | |
c906108c | 8801 | { |
a9634178 | 8802 | volatile struct gdb_exception e; |
d983da9c | 8803 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8804 | struct expression *exp; |
60e1c644 | 8805 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8806 | struct value *val, *mark, *result; |
c906108c | 8807 | struct frame_info *frame; |
c906108c SS |
8808 | char *exp_start = NULL; |
8809 | char *exp_end = NULL; | |
37e4754d | 8810 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8811 | int toklen; |
8812 | char *cond_start = NULL; | |
8813 | char *cond_end = NULL; | |
c906108c | 8814 | enum bptype bp_type; |
37e4754d | 8815 | int thread = -1; |
0cf6dd15 | 8816 | int pc = 0; |
c906108c | 8817 | |
37e4754d LM |
8818 | /* Make sure that we actually have parameters to parse. */ |
8819 | if (arg != NULL && arg[0] != '\0') | |
8820 | { | |
8821 | toklen = strlen (arg); /* Size of argument list. */ | |
8822 | ||
8823 | /* Points tok to the end of the argument list. */ | |
8824 | tok = arg + toklen - 1; | |
8825 | ||
4a64f543 MS |
8826 | /* Go backwards in the parameters list. Skip the last |
8827 | parameter. If we're expecting a 'thread <thread_num>' | |
8828 | parameter, this should be the thread identifier. */ | |
37e4754d LM |
8829 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8830 | tok--; | |
8831 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8832 | tok--; | |
8833 | ||
8834 | /* Points end_tok to the beginning of the last token. */ | |
8835 | id_tok_start = tok + 1; | |
8836 | ||
4a64f543 MS |
8837 | /* Go backwards in the parameters list. Skip one more |
8838 | parameter. If we're expecting a 'thread <thread_num>' | |
8839 | parameter, we should reach a "thread" token. */ | |
37e4754d LM |
8840 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8841 | tok--; | |
8842 | ||
8843 | end_tok = tok; | |
8844 | ||
8845 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8846 | tok--; | |
8847 | ||
8848 | /* Move the pointer forward to skip the whitespace and | |
8849 | calculate the length of the token. */ | |
8850 | tok++; | |
8851 | toklen = end_tok - tok; | |
8852 | ||
8853 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8854 | { | |
8855 | /* At this point we've found a "thread" token, which means | |
8856 | the user is trying to set a watchpoint that triggers | |
8857 | only in a specific thread. */ | |
8858 | char *endp; | |
8859 | ||
8860 | /* Extract the thread ID from the next token. */ | |
8861 | thread = strtol (id_tok_start, &endp, 0); | |
8862 | ||
8863 | /* Check if the user provided a valid numeric value for the | |
8864 | thread ID. */ | |
8865 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8866 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8867 | ||
8868 | /* Check if the thread actually exists. */ | |
8869 | if (!valid_thread_id (thread)) | |
8870 | error (_("Unknown thread %d."), thread); | |
8871 | ||
8872 | /* Truncate the string and get rid of the thread <thread_num> | |
8873 | parameter before the parameter list is parsed by the | |
8874 | evaluate_expression() function. */ | |
8875 | *tok = '\0'; | |
8876 | } | |
8877 | } | |
8878 | ||
8879 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8880 | innermost_block = NULL; |
8881 | exp_start = arg; | |
8882 | exp = parse_exp_1 (&arg, 0, 0); | |
8883 | exp_end = arg; | |
fa8a61dc TT |
8884 | /* Remove trailing whitespace from the expression before saving it. |
8885 | This makes the eventual display of the expression string a bit | |
8886 | prettier. */ | |
8887 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8888 | --exp_end; | |
8889 | ||
65d79d4b SDJ |
8890 | /* Checking if the expression is not constant. */ |
8891 | if (watchpoint_exp_is_const (exp)) | |
8892 | { | |
8893 | int len; | |
8894 | ||
8895 | len = exp_end - exp_start; | |
8896 | while (len > 0 && isspace (exp_start[len - 1])) | |
8897 | len--; | |
8898 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8899 | } | |
8900 | ||
c906108c SS |
8901 | exp_valid_block = innermost_block; |
8902 | mark = value_mark (); | |
a1442452 | 8903 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8904 | |
8905 | if (just_location) | |
8906 | { | |
8907 | exp_valid_block = NULL; | |
a1442452 | 8908 | val = value_addr (result); |
06a64a0b TT |
8909 | release_value (val); |
8910 | value_free_to_mark (mark); | |
8911 | } | |
8912 | else if (val != NULL) | |
fa4727a6 | 8913 | release_value (val); |
c906108c | 8914 | |
e9cafbcc TT |
8915 | tok = skip_spaces (arg); |
8916 | end_tok = skip_to_space (tok); | |
c906108c SS |
8917 | |
8918 | toklen = end_tok - tok; | |
8919 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8920 | { | |
2d134ed3 PA |
8921 | struct expression *cond; |
8922 | ||
60e1c644 | 8923 | innermost_block = NULL; |
c906108c SS |
8924 | tok = cond_start = end_tok + 1; |
8925 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8926 | |
8927 | /* The watchpoint expression may not be local, but the condition | |
8928 | may still be. E.g.: `watch global if local > 0'. */ | |
8929 | cond_exp_valid_block = innermost_block; | |
8930 | ||
2d134ed3 | 8931 | xfree (cond); |
c906108c SS |
8932 | cond_end = tok; |
8933 | } | |
8934 | if (*tok) | |
8a3fe4f8 | 8935 | error (_("Junk at end of command.")); |
c906108c | 8936 | |
53a5351d | 8937 | if (accessflag == hw_read) |
c5aa993b | 8938 | bp_type = bp_read_watchpoint; |
53a5351d | 8939 | else if (accessflag == hw_access) |
c5aa993b JM |
8940 | bp_type = bp_access_watchpoint; |
8941 | else | |
8942 | bp_type = bp_hardware_watchpoint; | |
c906108c | 8943 | |
d983da9c | 8944 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8945 | |
8946 | /* If the expression is "local", then set up a "watchpoint scope" | |
8947 | breakpoint at the point where we've left the scope of the watchpoint | |
8948 | expression. Create the scope breakpoint before the watchpoint, so | |
8949 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8950 | if (exp_valid_block && frame) |
d983da9c | 8951 | { |
edb3359d DJ |
8952 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8953 | { | |
8954 | scope_breakpoint | |
a6d9a66e UW |
8955 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8956 | frame_unwind_caller_pc (frame), | |
edb3359d | 8957 | bp_watchpoint_scope); |
d983da9c | 8958 | |
edb3359d | 8959 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8960 | |
edb3359d DJ |
8961 | /* Automatically delete the breakpoint when it hits. */ |
8962 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8963 | |
edb3359d DJ |
8964 | /* Only break in the proper frame (help with recursion). */ |
8965 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8966 | |
edb3359d | 8967 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8968 | scope_breakpoint->loc->gdbarch |
8969 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8970 | scope_breakpoint->loc->requested_address |
8971 | = frame_unwind_caller_pc (frame); | |
8972 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8973 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8974 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8975 | scope_breakpoint->type); |
8976 | } | |
d983da9c DJ |
8977 | } |
8978 | ||
c906108c | 8979 | /* Now set up the breakpoint. */ |
2d134ed3 | 8980 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
37e4754d | 8981 | b->thread = thread; |
b5de0fa7 | 8982 | b->disposition = disp_donttouch; |
c906108c SS |
8983 | b->exp = exp; |
8984 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8985 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8986 | if (just_location) |
8987 | { | |
8988 | struct type *t = value_type (val); | |
8989 | CORE_ADDR addr = value_as_address (val); | |
8990 | char *name; | |
8991 | ||
8992 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8993 | name = type_to_string (t); | |
8994 | ||
d63d0675 JK |
8995 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8996 | core_addr_to_string (addr)); | |
06a64a0b TT |
8997 | xfree (name); |
8998 | ||
4a4106ca | 8999 | b->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
9000 | (int) (exp_end - exp_start), exp_start); |
9001 | ||
06a64a0b TT |
9002 | /* The above expression is in C. */ |
9003 | b->language = language_c; | |
9004 | } | |
9005 | else | |
9006 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 9007 | b->val = val; |
fa4727a6 | 9008 | b->val_valid = 1; |
77b06cd7 TJB |
9009 | b->ops = &watchpoint_breakpoint_ops; |
9010 | ||
c906108c SS |
9011 | if (cond_start) |
9012 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9013 | else | |
9014 | b->cond_string = 0; | |
c5aa993b | 9015 | |
c906108c | 9016 | if (frame) |
f6bc2008 PA |
9017 | { |
9018 | b->watchpoint_frame = get_frame_id (frame); | |
9019 | b->watchpoint_thread = inferior_ptid; | |
9020 | } | |
c906108c | 9021 | else |
f6bc2008 PA |
9022 | { |
9023 | b->watchpoint_frame = null_frame_id; | |
9024 | b->watchpoint_thread = null_ptid; | |
9025 | } | |
c906108c | 9026 | |
d983da9c | 9027 | if (scope_breakpoint != NULL) |
c906108c | 9028 | { |
d983da9c DJ |
9029 | /* The scope breakpoint is related to the watchpoint. We will |
9030 | need to act on them together. */ | |
9031 | b->related_breakpoint = scope_breakpoint; | |
9032 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9033 | } |
d983da9c | 9034 | |
06a64a0b TT |
9035 | if (!just_location) |
9036 | value_free_to_mark (mark); | |
2d134ed3 | 9037 | |
a9634178 TJB |
9038 | TRY_CATCH (e, RETURN_MASK_ALL) |
9039 | { | |
9040 | /* Finally update the new watchpoint. This creates the locations | |
9041 | that should be inserted. */ | |
9042 | update_watchpoint (b, 1); | |
9043 | } | |
9044 | if (e.reason < 0) | |
9045 | { | |
9046 | delete_breakpoint (b); | |
9047 | throw_exception (e); | |
9048 | } | |
9049 | ||
9050 | set_breakpoint_number (internal, b); | |
8d3788bd VP |
9051 | |
9052 | /* Do not mention breakpoints with a negative number, but do | |
a9634178 | 9053 | notify observers. */ |
8d3788bd | 9054 | if (!internal) |
84f4c1fe | 9055 | mention (b); |
8d3788bd VP |
9056 | observer_notify_breakpoint_created (b); |
9057 | ||
b60e7edf | 9058 | update_global_location_list (1); |
c906108c SS |
9059 | } |
9060 | ||
e09342b5 | 9061 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 9062 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 9063 | |
c906108c | 9064 | static int |
a9634178 | 9065 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
9066 | { |
9067 | int found_memory_cnt = 0; | |
2e70b7b9 | 9068 | struct value *head = v; |
c906108c SS |
9069 | |
9070 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9071 | if (!can_use_hw_watchpoints) |
c906108c | 9072 | return 0; |
c5aa993b | 9073 | |
5c44784c JM |
9074 | /* Make sure that the value of the expression depends only upon |
9075 | memory contents, and values computed from them within GDB. If we | |
9076 | find any register references or function calls, we can't use a | |
9077 | hardware watchpoint. | |
9078 | ||
9079 | The idea here is that evaluating an expression generates a series | |
9080 | of values, one holding the value of every subexpression. (The | |
9081 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9082 | a*b+c.) GDB's values hold almost enough information to establish | |
9083 | the criteria given above --- they identify memory lvalues, | |
9084 | register lvalues, computed values, etcetera. So we can evaluate | |
9085 | the expression, and then scan the chain of values that leaves | |
9086 | behind to decide whether we can detect any possible change to the | |
9087 | expression's final value using only hardware watchpoints. | |
9088 | ||
9089 | However, I don't think that the values returned by inferior | |
9090 | function calls are special in any way. So this function may not | |
9091 | notice that an expression involving an inferior function call | |
9092 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9093 | for (; v; v = value_next (v)) |
c906108c | 9094 | { |
5c44784c | 9095 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9096 | { |
8464be76 DJ |
9097 | if (v != head && value_lazy (v)) |
9098 | /* A lazy memory lvalue in the chain is one that GDB never | |
9099 | needed to fetch; we either just used its address (e.g., | |
9100 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9101 | in `a,b'). This doesn't apply to HEAD; if that is | |
9102 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9103 | ; |
53a5351d | 9104 | else |
5c44784c JM |
9105 | { |
9106 | /* Ahh, memory we actually used! Check if we can cover | |
9107 | it with hardware watchpoints. */ | |
df407dfe | 9108 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9109 | |
9110 | /* We only watch structs and arrays if user asked for it | |
9111 | explicitly, never if they just happen to appear in a | |
9112 | middle of some value chain. */ | |
9113 | if (v == head | |
9114 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9115 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9116 | { | |
42ae5230 | 9117 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9118 | int len; |
9119 | int num_regs; | |
9120 | ||
a9634178 | 9121 | len = (target_exact_watchpoints |
e09342b5 TJB |
9122 | && is_scalar_type_recursive (vtype))? |
9123 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9124 | |
e09342b5 TJB |
9125 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9126 | if (!num_regs) | |
2e70b7b9 MS |
9127 | return 0; |
9128 | else | |
e09342b5 | 9129 | found_memory_cnt += num_regs; |
2e70b7b9 | 9130 | } |
5c44784c | 9131 | } |
c5aa993b | 9132 | } |
5086187c AC |
9133 | else if (VALUE_LVAL (v) != not_lval |
9134 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9135 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9136 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9137 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9138 | } |
9139 | ||
9140 | /* The expression itself looks suitable for using a hardware | |
9141 | watchpoint, but give the target machine a chance to reject it. */ | |
9142 | return found_memory_cnt; | |
9143 | } | |
9144 | ||
8b93c638 | 9145 | void |
84f4c1fe | 9146 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9147 | { |
84f4c1fe | 9148 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9149 | } |
9150 | ||
9151 | /* A helper function that looks for an argument at the start of a | |
9152 | string. The argument must also either be at the end of the string, | |
9153 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9154 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9155 | ||
9156 | static int | |
9157 | check_for_argument (char **str, char *arg, int arg_len) | |
9158 | { | |
9159 | if (strncmp (*str, arg, arg_len) == 0 | |
9160 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9161 | { | |
9162 | *str += arg_len; | |
9163 | return 1; | |
9164 | } | |
9165 | return 0; | |
9166 | } | |
9167 | ||
9168 | /* A helper function that looks for the "-location" argument and then | |
9169 | calls watch_command_1. */ | |
9170 | ||
9171 | static void | |
9172 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9173 | { | |
9174 | int just_location = 0; | |
9175 | ||
9176 | if (arg | |
9177 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9178 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9179 | { | |
e9cafbcc | 9180 | arg = skip_spaces (arg); |
06a64a0b TT |
9181 | just_location = 1; |
9182 | } | |
9183 | ||
84f4c1fe | 9184 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9185 | } |
8926118c | 9186 | |
c5aa993b | 9187 | static void |
fba45db2 | 9188 | watch_command (char *arg, int from_tty) |
c906108c | 9189 | { |
06a64a0b | 9190 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9191 | } |
9192 | ||
8b93c638 | 9193 | void |
84f4c1fe | 9194 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9195 | { |
84f4c1fe | 9196 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9197 | } |
8926118c | 9198 | |
c5aa993b | 9199 | static void |
fba45db2 | 9200 | rwatch_command (char *arg, int from_tty) |
c906108c | 9201 | { |
06a64a0b | 9202 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9203 | } |
9204 | ||
8b93c638 | 9205 | void |
84f4c1fe | 9206 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9207 | { |
84f4c1fe | 9208 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9209 | } |
8926118c | 9210 | |
c5aa993b | 9211 | static void |
fba45db2 | 9212 | awatch_command (char *arg, int from_tty) |
c906108c | 9213 | { |
06a64a0b | 9214 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9215 | } |
c906108c | 9216 | \f |
c5aa993b | 9217 | |
43ff13b4 | 9218 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9219 | because it uses the mechanisms of breakpoints. */ |
9220 | ||
bfec99b2 PA |
9221 | struct until_break_command_continuation_args |
9222 | { | |
9223 | struct breakpoint *breakpoint; | |
9224 | struct breakpoint *breakpoint2; | |
186c406b | 9225 | int thread_num; |
bfec99b2 PA |
9226 | }; |
9227 | ||
43ff13b4 | 9228 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9229 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9230 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9231 | command. */ |
c2c6d25f | 9232 | static void |
604ead4a | 9233 | until_break_command_continuation (void *arg) |
43ff13b4 | 9234 | { |
bfec99b2 PA |
9235 | struct until_break_command_continuation_args *a = arg; |
9236 | ||
9237 | delete_breakpoint (a->breakpoint); | |
9238 | if (a->breakpoint2) | |
9239 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9240 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9241 | } |
9242 | ||
c906108c | 9243 | void |
ae66c1fc | 9244 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9245 | { |
9246 | struct symtabs_and_lines sals; | |
9247 | struct symtab_and_line sal; | |
206415a3 | 9248 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9249 | struct breakpoint *breakpoint; |
f107f563 | 9250 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9251 | struct cleanup *old_chain; |
186c406b TT |
9252 | int thread; |
9253 | struct thread_info *tp; | |
c906108c SS |
9254 | |
9255 | clear_proceed_status (); | |
9256 | ||
9257 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9258 | this function. */ |
c5aa993b | 9259 | |
c906108c SS |
9260 | if (default_breakpoint_valid) |
9261 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
58438ac1 | 9262 | default_breakpoint_line, NULL); |
c906108c | 9263 | else |
58438ac1 | 9264 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL); |
c5aa993b | 9265 | |
c906108c | 9266 | if (sals.nelts != 1) |
8a3fe4f8 | 9267 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9268 | |
c906108c | 9269 | sal = sals.sals[0]; |
4a64f543 | 9270 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9271 | |
c906108c | 9272 | if (*arg) |
8a3fe4f8 | 9273 | error (_("Junk at end of arguments.")); |
c5aa993b | 9274 | |
c906108c | 9275 | resolve_sal_pc (&sal); |
c5aa993b | 9276 | |
ae66c1fc EZ |
9277 | if (anywhere) |
9278 | /* If the user told us to continue until a specified location, | |
9279 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9280 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9281 | null_frame_id, bp_until); | |
ae66c1fc | 9282 | else |
4a64f543 MS |
9283 | /* Otherwise, specify the selected frame, because we want to stop |
9284 | only at the very same frame. */ | |
a6d9a66e UW |
9285 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9286 | get_stack_frame_id (frame), | |
ae66c1fc | 9287 | bp_until); |
c5aa993b | 9288 | |
f107f563 | 9289 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9290 | |
186c406b TT |
9291 | tp = inferior_thread (); |
9292 | thread = tp->num; | |
9293 | ||
ae66c1fc EZ |
9294 | /* Keep within the current frame, or in frames called by the current |
9295 | one. */ | |
edb3359d DJ |
9296 | |
9297 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9298 | { |
edb3359d DJ |
9299 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9300 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9301 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9302 | sal, | |
edb3359d | 9303 | frame_unwind_caller_id (frame), |
f107f563 VP |
9304 | bp_until); |
9305 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9306 | |
9307 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9308 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9309 | } |
c5aa993b | 9310 | |
c906108c | 9311 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9312 | |
4a64f543 MS |
9313 | /* If we are running asynchronously, and proceed call above has |
9314 | actually managed to start the target, arrange for breakpoints to | |
9315 | be deleted when the target stops. Otherwise, we're already | |
9316 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9317 | |
8ea051c5 | 9318 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9319 | { |
bfec99b2 PA |
9320 | struct until_break_command_continuation_args *args; |
9321 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9322 | |
bfec99b2 PA |
9323 | args->breakpoint = breakpoint; |
9324 | args->breakpoint2 = breakpoint2; | |
186c406b | 9325 | args->thread_num = thread; |
f107f563 VP |
9326 | |
9327 | discard_cleanups (old_chain); | |
95e54da7 PA |
9328 | add_continuation (inferior_thread (), |
9329 | until_break_command_continuation, args, | |
604ead4a | 9330 | xfree); |
f107f563 VP |
9331 | } |
9332 | else | |
c5aa993b | 9333 | do_cleanups (old_chain); |
c906108c | 9334 | } |
ae66c1fc | 9335 | |
c906108c SS |
9336 | /* This function attempts to parse an optional "if <cond>" clause |
9337 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9338 | |
c906108c SS |
9339 | Else, it returns a pointer to the condition string. (It does not |
9340 | attempt to evaluate the string against a particular block.) And, | |
9341 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9342 | if clause in the arg string. */ |
53a5351d | 9343 | |
c906108c | 9344 | static char * |
fba45db2 | 9345 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9346 | { |
c5aa993b JM |
9347 | char *cond_string; |
9348 | ||
9349 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9350 | return NULL; |
c5aa993b | 9351 | |
4a64f543 | 9352 | /* Skip the "if" keyword. */ |
c906108c | 9353 | (*arg) += 2; |
c5aa993b | 9354 | |
c906108c | 9355 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9356 | condition string. */ |
e9cafbcc | 9357 | *arg = skip_spaces (*arg); |
c906108c | 9358 | cond_string = *arg; |
c5aa993b | 9359 | |
4a64f543 MS |
9360 | /* Assume that the condition occupies the remainder of the arg |
9361 | string. */ | |
c906108c | 9362 | (*arg) += strlen (cond_string); |
c5aa993b | 9363 | |
c906108c SS |
9364 | return cond_string; |
9365 | } | |
c5aa993b | 9366 | |
c906108c SS |
9367 | /* Commands to deal with catching events, such as signals, exceptions, |
9368 | process start/exit, etc. */ | |
c5aa993b JM |
9369 | |
9370 | typedef enum | |
9371 | { | |
44feb3ce TT |
9372 | catch_fork_temporary, catch_vfork_temporary, |
9373 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9374 | } |
9375 | catch_fork_kind; | |
9376 | ||
c906108c | 9377 | static void |
cc59ec59 MS |
9378 | catch_fork_command_1 (char *arg, int from_tty, |
9379 | struct cmd_list_element *command) | |
c906108c | 9380 | { |
a6d9a66e | 9381 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9382 | char *cond_string = NULL; |
44feb3ce TT |
9383 | catch_fork_kind fork_kind; |
9384 | int tempflag; | |
9385 | ||
9386 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9387 | tempflag = (fork_kind == catch_fork_temporary | |
9388 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9389 | |
44feb3ce TT |
9390 | if (!arg) |
9391 | arg = ""; | |
e9cafbcc | 9392 | arg = skip_spaces (arg); |
c5aa993b | 9393 | |
c906108c | 9394 | /* The allowed syntax is: |
c5aa993b JM |
9395 | catch [v]fork |
9396 | catch [v]fork if <cond> | |
9397 | ||
4a64f543 | 9398 | First, check if there's an if clause. */ |
c906108c | 9399 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9400 | |
c906108c | 9401 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9402 | error (_("Junk at end of arguments.")); |
c5aa993b | 9403 | |
c906108c | 9404 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9405 | and enable reporting of such events. */ |
c5aa993b JM |
9406 | switch (fork_kind) |
9407 | { | |
44feb3ce TT |
9408 | case catch_fork_temporary: |
9409 | case catch_fork_permanent: | |
a6d9a66e | 9410 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9411 | &catch_fork_breakpoint_ops); |
c906108c | 9412 | break; |
44feb3ce TT |
9413 | case catch_vfork_temporary: |
9414 | case catch_vfork_permanent: | |
a6d9a66e | 9415 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9416 | &catch_vfork_breakpoint_ops); |
c906108c | 9417 | break; |
c5aa993b | 9418 | default: |
8a3fe4f8 | 9419 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9420 | break; |
c5aa993b | 9421 | } |
c906108c SS |
9422 | } |
9423 | ||
9424 | static void | |
cc59ec59 MS |
9425 | catch_exec_command_1 (char *arg, int from_tty, |
9426 | struct cmd_list_element *command) | |
c906108c | 9427 | { |
a6d9a66e | 9428 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9429 | int tempflag; |
c5aa993b | 9430 | char *cond_string = NULL; |
c906108c | 9431 | |
44feb3ce TT |
9432 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9433 | ||
9434 | if (!arg) | |
9435 | arg = ""; | |
e9cafbcc | 9436 | arg = skip_spaces (arg); |
c906108c SS |
9437 | |
9438 | /* The allowed syntax is: | |
c5aa993b JM |
9439 | catch exec |
9440 | catch exec if <cond> | |
c906108c | 9441 | |
4a64f543 | 9442 | First, check if there's an if clause. */ |
c906108c SS |
9443 | cond_string = ep_parse_optional_if_clause (&arg); |
9444 | ||
9445 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9446 | error (_("Junk at end of arguments.")); |
c906108c SS |
9447 | |
9448 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 9449 | and enable reporting of such events. */ |
a6d9a66e UW |
9450 | create_catchpoint (gdbarch, tempflag, cond_string, |
9451 | &catch_exec_breakpoint_ops); | |
c906108c | 9452 | } |
c5aa993b | 9453 | |
3086aeae | 9454 | static enum print_stop_action |
ba770c9c | 9455 | print_it_exception_catchpoint (struct breakpoint *b) |
3086aeae | 9456 | { |
ade92717 | 9457 | int bp_temp, bp_throw; |
3086aeae | 9458 | |
ade92717 | 9459 | annotate_catchpoint (b->number); |
3086aeae | 9460 | |
ade92717 AR |
9461 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9462 | if (b->loc->address != b->loc->requested_address) | |
9463 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9464 | b->loc->address, | |
9465 | b->number, 1); | |
df2b6d2d | 9466 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9467 | ui_out_text (uiout, |
9468 | bp_temp ? "Temporary catchpoint " | |
9469 | : "Catchpoint "); | |
9470 | if (!ui_out_is_mi_like_p (uiout)) | |
9471 | ui_out_field_int (uiout, "bkptno", b->number); | |
9472 | ui_out_text (uiout, | |
c0b37c48 AR |
9473 | bp_throw ? " (exception thrown), " |
9474 | : " (exception caught), "); | |
ade92717 AR |
9475 | if (ui_out_is_mi_like_p (uiout)) |
9476 | { | |
9477 | ui_out_field_string (uiout, "reason", | |
9478 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9479 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9480 | ui_out_field_int (uiout, "bkptno", b->number); | |
9481 | } | |
3086aeae DJ |
9482 | return PRINT_SRC_AND_LOC; |
9483 | } | |
9484 | ||
9485 | static void | |
cc59ec59 MS |
9486 | print_one_exception_catchpoint (struct breakpoint *b, |
9487 | struct bp_location **last_loc) | |
3086aeae | 9488 | { |
79a45b7d | 9489 | struct value_print_options opts; |
cc59ec59 | 9490 | |
79a45b7d TT |
9491 | get_user_print_options (&opts); |
9492 | if (opts.addressprint) | |
3086aeae DJ |
9493 | { |
9494 | annotate_field (4); | |
604133b5 AR |
9495 | if (b->loc == NULL || b->loc->shlib_disabled) |
9496 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9497 | else | |
5af949e3 UW |
9498 | ui_out_field_core_addr (uiout, "addr", |
9499 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9500 | } |
9501 | annotate_field (5); | |
604133b5 | 9502 | if (b->loc) |
a6d9a66e | 9503 | *last_loc = b->loc; |
3086aeae DJ |
9504 | if (strstr (b->addr_string, "throw") != NULL) |
9505 | ui_out_field_string (uiout, "what", "exception throw"); | |
9506 | else | |
9507 | ui_out_field_string (uiout, "what", "exception catch"); | |
9508 | } | |
9509 | ||
9510 | static void | |
9511 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9512 | { | |
ade92717 AR |
9513 | int bp_temp; |
9514 | int bp_throw; | |
9515 | ||
df2b6d2d | 9516 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9517 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9518 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9519 | : _("Catchpoint ")); | |
9520 | ui_out_field_int (uiout, "bkptno", b->number); | |
9521 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9522 | : _(" (catch)")); | |
3086aeae DJ |
9523 | } |
9524 | ||
6149aea9 PA |
9525 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9526 | catch catchpoints. */ | |
9527 | ||
9528 | static void | |
4a64f543 MS |
9529 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9530 | struct ui_file *fp) | |
6149aea9 PA |
9531 | { |
9532 | int bp_temp; | |
9533 | int bp_throw; | |
9534 | ||
9535 | bp_temp = b->disposition == disp_del; | |
9536 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9537 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9538 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
9539 | } | |
9540 | ||
3086aeae | 9541 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
9542 | NULL, /* insert */ |
9543 | NULL, /* remove */ | |
9544 | NULL, /* breakpoint_hit */ | |
e09342b5 | 9545 | NULL, /* resources_needed */ |
ba770c9c | 9546 | print_it_exception_catchpoint, |
3086aeae | 9547 | print_one_exception_catchpoint, |
f1310107 | 9548 | NULL, /* print_one_detail */ |
6149aea9 PA |
9549 | print_mention_exception_catchpoint, |
9550 | print_recreate_exception_catchpoint | |
3086aeae DJ |
9551 | }; |
9552 | ||
9553 | static int | |
9554 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9555 | enum exception_event_kind ex_event, int from_tty) | |
9556 | { | |
604133b5 AR |
9557 | char *trigger_func_name; |
9558 | ||
3086aeae | 9559 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9560 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9561 | else |
604133b5 | 9562 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9563 | |
8cdf0e15 VP |
9564 | create_breakpoint (get_current_arch (), |
9565 | trigger_func_name, cond_string, -1, | |
9566 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9567 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9568 | 0, |
9569 | AUTO_BOOLEAN_TRUE /* pending */, | |
9570 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9571 | 1 /* enabled */, |
9572 | 0 /* internal */); | |
3086aeae | 9573 | |
3086aeae DJ |
9574 | return 1; |
9575 | } | |
9576 | ||
4a64f543 | 9577 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9578 | |
9579 | static void | |
fba45db2 KB |
9580 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9581 | int tempflag, int from_tty) | |
c906108c | 9582 | { |
c5aa993b | 9583 | char *cond_string = NULL; |
c5aa993b | 9584 | |
44feb3ce TT |
9585 | if (!arg) |
9586 | arg = ""; | |
e9cafbcc | 9587 | arg = skip_spaces (arg); |
c5aa993b | 9588 | |
c906108c SS |
9589 | cond_string = ep_parse_optional_if_clause (&arg); |
9590 | ||
9591 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9592 | error (_("Junk at end of arguments.")); |
c906108c | 9593 | |
059fb39f PM |
9594 | if (ex_event != EX_EVENT_THROW |
9595 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9596 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9597 | |
3086aeae DJ |
9598 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9599 | return; | |
9600 | ||
8a3fe4f8 | 9601 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9602 | } |
9603 | ||
44feb3ce TT |
9604 | /* Implementation of "catch catch" command. */ |
9605 | ||
9606 | static void | |
9607 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9608 | { | |
9609 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9610 | |
44feb3ce TT |
9611 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9612 | } | |
9613 | ||
9614 | /* Implementation of "catch throw" command. */ | |
9615 | ||
9616 | static void | |
9617 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9618 | { | |
9619 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9620 | |
44feb3ce TT |
9621 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9622 | } | |
9623 | ||
f7f9143b JB |
9624 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9625 | ||
9626 | static void | |
a6d9a66e UW |
9627 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9628 | struct symtab_and_line sal, | |
f7f9143b JB |
9629 | char *addr_string, |
9630 | char *exp_string, | |
9631 | char *cond_string, | |
9632 | struct expression *cond, | |
9633 | struct breakpoint_ops *ops, | |
9634 | int tempflag, | |
9635 | int from_tty) | |
9636 | { | |
9637 | struct breakpoint *b; | |
9638 | ||
9639 | if (from_tty) | |
9640 | { | |
5af949e3 UW |
9641 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9642 | if (!loc_gdbarch) | |
9643 | loc_gdbarch = gdbarch; | |
9644 | ||
6c95b8df PA |
9645 | describe_other_breakpoints (loc_gdbarch, |
9646 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9647 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9648 | version for exception catchpoints, because two catchpoints | |
9649 | used for different exception names will use the same address. | |
9650 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9651 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9652 | inapropriate, we should use the word catchpoint, and tell |
9653 | the user what type of catchpoint it is. The above is good | |
9654 | enough for now, though. */ | |
9655 | } | |
9656 | ||
a6d9a66e | 9657 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9658 | set_breakpoint_count (breakpoint_count + 1); |
9659 | ||
9660 | b->enable_state = bp_enabled; | |
9661 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9662 | b->number = breakpoint_count; | |
9663 | b->ignore_count = 0; | |
511a6cd4 | 9664 | b->loc->cond = cond; |
f7f9143b JB |
9665 | b->addr_string = addr_string; |
9666 | b->language = language_ada; | |
9667 | b->cond_string = cond_string; | |
9668 | b->exp_string = exp_string; | |
9669 | b->thread = -1; | |
9670 | b->ops = ops; | |
f7f9143b JB |
9671 | |
9672 | mention (b); | |
8d3788bd | 9673 | observer_notify_breakpoint_created (b); |
b60e7edf | 9674 | update_global_location_list (1); |
f7f9143b JB |
9675 | } |
9676 | ||
9677 | /* Implement the "catch exception" command. */ | |
9678 | ||
9679 | static void | |
44feb3ce TT |
9680 | catch_ada_exception_command (char *arg, int from_tty, |
9681 | struct cmd_list_element *command) | |
f7f9143b | 9682 | { |
a6d9a66e | 9683 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9684 | int tempflag; |
f7f9143b | 9685 | struct symtab_and_line sal; |
f7f9143b JB |
9686 | char *addr_string = NULL; |
9687 | char *exp_string = NULL; | |
9688 | char *cond_string = NULL; | |
9689 | struct expression *cond = NULL; | |
9690 | struct breakpoint_ops *ops = NULL; | |
9691 | ||
44feb3ce TT |
9692 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9693 | ||
9694 | if (!arg) | |
9695 | arg = ""; | |
f7f9143b JB |
9696 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9697 | &cond_string, &cond, &ops); | |
a6d9a66e | 9698 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9699 | cond_string, cond, ops, tempflag, |
9700 | from_tty); | |
9701 | } | |
9702 | ||
a96d9b2e SDJ |
9703 | /* Cleanup function for a syscall filter list. */ |
9704 | static void | |
9705 | clean_up_filters (void *arg) | |
9706 | { | |
9707 | VEC(int) *iter = *(VEC(int) **) arg; | |
9708 | VEC_free (int, iter); | |
9709 | } | |
9710 | ||
9711 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9712 | filter list, or NULL if no filtering is required. */ | |
9713 | static VEC(int) * | |
9714 | catch_syscall_split_args (char *arg) | |
9715 | { | |
9716 | VEC(int) *result = NULL; | |
9717 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9718 | ||
9719 | while (*arg != '\0') | |
9720 | { | |
9721 | int i, syscall_number; | |
9722 | char *endptr; | |
9723 | char cur_name[128]; | |
9724 | struct syscall s; | |
9725 | ||
9726 | /* Skip whitespace. */ | |
9727 | while (isspace (*arg)) | |
9728 | arg++; | |
9729 | ||
9730 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9731 | cur_name[i] = arg[i]; | |
9732 | cur_name[i] = '\0'; | |
9733 | arg += i; | |
9734 | ||
9735 | /* Check if the user provided a syscall name or a number. */ | |
9736 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9737 | if (*endptr == '\0') | |
bccd0dd2 | 9738 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9739 | else |
9740 | { | |
9741 | /* We have a name. Let's check if it's valid and convert it | |
9742 | to a number. */ | |
9743 | get_syscall_by_name (cur_name, &s); | |
9744 | ||
9745 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9746 | /* Here we have to issue an error instead of a warning, |
9747 | because GDB cannot do anything useful if there's no | |
9748 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9749 | error (_("Unknown syscall name '%s'."), cur_name); |
9750 | } | |
9751 | ||
9752 | /* Ok, it's valid. */ | |
9753 | VEC_safe_push (int, result, s.number); | |
9754 | } | |
9755 | ||
9756 | discard_cleanups (cleanup); | |
9757 | return result; | |
9758 | } | |
9759 | ||
9760 | /* Implement the "catch syscall" command. */ | |
9761 | ||
9762 | static void | |
cc59ec59 MS |
9763 | catch_syscall_command_1 (char *arg, int from_tty, |
9764 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9765 | { |
9766 | int tempflag; | |
9767 | VEC(int) *filter; | |
9768 | struct syscall s; | |
9769 | struct gdbarch *gdbarch = get_current_arch (); | |
9770 | ||
9771 | /* Checking if the feature if supported. */ | |
9772 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9773 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9774 | this architecture yet.")); |
a96d9b2e SDJ |
9775 | |
9776 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9777 | ||
e9cafbcc | 9778 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9779 | |
9780 | /* We need to do this first "dummy" translation in order | |
9781 | to get the syscall XML file loaded or, most important, | |
9782 | to display a warning to the user if there's no XML file | |
9783 | for his/her architecture. */ | |
9784 | get_syscall_by_number (0, &s); | |
9785 | ||
9786 | /* The allowed syntax is: | |
9787 | catch syscall | |
9788 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9789 | ||
9790 | Let's check if there's a syscall name. */ | |
9791 | ||
9792 | if (arg != NULL) | |
9793 | filter = catch_syscall_split_args (arg); | |
9794 | else | |
9795 | filter = NULL; | |
9796 | ||
9797 | create_syscall_event_catchpoint (tempflag, filter, | |
9798 | &catch_syscall_breakpoint_ops); | |
9799 | } | |
9800 | ||
f7f9143b JB |
9801 | /* Implement the "catch assert" command. */ |
9802 | ||
9803 | static void | |
3e43a32a MS |
9804 | catch_assert_command (char *arg, int from_tty, |
9805 | struct cmd_list_element *command) | |
f7f9143b | 9806 | { |
a6d9a66e | 9807 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9808 | int tempflag; |
f7f9143b JB |
9809 | struct symtab_and_line sal; |
9810 | char *addr_string = NULL; | |
9811 | struct breakpoint_ops *ops = NULL; | |
9812 | ||
44feb3ce TT |
9813 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9814 | ||
9815 | if (!arg) | |
9816 | arg = ""; | |
f7f9143b | 9817 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9818 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9819 | ops, tempflag, from_tty); | |
f7f9143b JB |
9820 | } |
9821 | ||
c906108c | 9822 | static void |
fba45db2 | 9823 | catch_command (char *arg, int from_tty) |
c906108c | 9824 | { |
44feb3ce | 9825 | error (_("Catch requires an event name.")); |
c906108c SS |
9826 | } |
9827 | \f | |
9828 | ||
9829 | static void | |
fba45db2 | 9830 | tcatch_command (char *arg, int from_tty) |
c906108c | 9831 | { |
44feb3ce | 9832 | error (_("Catch requires an event name.")); |
c906108c SS |
9833 | } |
9834 | ||
80f8a6eb | 9835 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9836 | |
9837 | static void | |
fba45db2 | 9838 | clear_command (char *arg, int from_tty) |
c906108c | 9839 | { |
d6e956e5 VP |
9840 | struct breakpoint *b; |
9841 | VEC(breakpoint_p) *found = 0; | |
9842 | int ix; | |
c906108c SS |
9843 | int default_match; |
9844 | struct symtabs_and_lines sals; | |
9845 | struct symtab_and_line sal; | |
c906108c SS |
9846 | int i; |
9847 | ||
9848 | if (arg) | |
9849 | { | |
9850 | sals = decode_line_spec (arg, 1); | |
9851 | default_match = 0; | |
9852 | } | |
9853 | else | |
9854 | { | |
c5aa993b | 9855 | sals.sals = (struct symtab_and_line *) |
c906108c | 9856 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9857 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9858 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9859 | sal.line = default_breakpoint_line; |
9860 | sal.symtab = default_breakpoint_symtab; | |
9861 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9862 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9863 | if (sal.symtab == 0) |
8a3fe4f8 | 9864 | error (_("No source file specified.")); |
c906108c SS |
9865 | |
9866 | sals.sals[0] = sal; | |
9867 | sals.nelts = 1; | |
9868 | ||
9869 | default_match = 1; | |
9870 | } | |
9871 | ||
4a64f543 MS |
9872 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9873 | seems, because all existing breakpoints typically have both | |
9874 | file/line and pc set. So, if clear is given file/line, we can | |
9875 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9876 | |
9877 | We only support clearing given the address explicitly | |
9878 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9879 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9880 | due to optimization, all in one block. |
4a64f543 MS |
9881 | |
9882 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9883 | PC corresponding to the same file:line, the breakpoint won't |
9884 | be cleared. We probably can still clear the breakpoint, but | |
9885 | since the other PC value is never presented to user, user | |
9886 | can only find it by guessing, and it does not seem important | |
9887 | to support that. */ | |
9888 | ||
4a64f543 MS |
9889 | /* For each line spec given, delete bps which correspond to it. Do |
9890 | it in two passes, solely to preserve the current behavior that | |
9891 | from_tty is forced true if we delete more than one | |
9892 | breakpoint. */ | |
c906108c | 9893 | |
80f8a6eb | 9894 | found = NULL; |
c906108c SS |
9895 | for (i = 0; i < sals.nelts; i++) |
9896 | { | |
9897 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9898 | If line given (pc == 0), clear all bpts on specified line. |
9899 | If defaulting, clear all bpts on default line | |
c906108c | 9900 | or at default pc. |
c5aa993b JM |
9901 | |
9902 | defaulting sal.pc != 0 tests to do | |
9903 | ||
9904 | 0 1 pc | |
9905 | 1 1 pc _and_ line | |
9906 | 0 0 line | |
9907 | 1 0 <can't happen> */ | |
c906108c SS |
9908 | |
9909 | sal = sals.sals[i]; | |
c906108c | 9910 | |
4a64f543 | 9911 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9912 | ALL_BREAKPOINTS (b) |
c5aa993b | 9913 | { |
0d381245 | 9914 | int match = 0; |
4a64f543 | 9915 | /* Are we going to delete b? */ |
cc60f2e3 | 9916 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9917 | { |
9918 | struct bp_location *loc = b->loc; | |
9919 | for (; loc; loc = loc->next) | |
9920 | { | |
6c95b8df PA |
9921 | int pc_match = sal.pc |
9922 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9923 | && (loc->address == sal.pc) |
9924 | && (!section_is_overlay (loc->section) | |
9925 | || loc->section == sal.section); | |
9926 | int line_match = ((default_match || (0 == sal.pc)) | |
9927 | && b->source_file != NULL | |
9928 | && sal.symtab != NULL | |
6c95b8df | 9929 | && sal.pspace == loc->pspace |
0ba1096a KT |
9930 | && filename_cmp (b->source_file, |
9931 | sal.symtab->filename) == 0 | |
0d381245 VP |
9932 | && b->line_number == sal.line); |
9933 | if (pc_match || line_match) | |
9934 | { | |
9935 | match = 1; | |
9936 | break; | |
9937 | } | |
9938 | } | |
9939 | } | |
9940 | ||
9941 | if (match) | |
d6e956e5 | 9942 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9943 | } |
80f8a6eb MS |
9944 | } |
9945 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9946 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9947 | { |
9948 | if (arg) | |
8a3fe4f8 | 9949 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9950 | else |
8a3fe4f8 | 9951 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9952 | } |
c906108c | 9953 | |
d6e956e5 | 9954 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9955 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9956 | if (from_tty) |
a3f17187 | 9957 | { |
d6e956e5 | 9958 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9959 | printf_unfiltered (_("Deleted breakpoint ")); |
9960 | else | |
9961 | printf_unfiltered (_("Deleted breakpoints ")); | |
9962 | } | |
80f8a6eb | 9963 | breakpoints_changed (); |
d6e956e5 VP |
9964 | |
9965 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9966 | { |
c5aa993b | 9967 | if (from_tty) |
d6e956e5 VP |
9968 | printf_unfiltered ("%d ", b->number); |
9969 | delete_breakpoint (b); | |
c906108c | 9970 | } |
80f8a6eb MS |
9971 | if (from_tty) |
9972 | putchar_unfiltered ('\n'); | |
c906108c SS |
9973 | } |
9974 | \f | |
9975 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9976 | all breakpoints that are marked for deletion, whether hit or not. | |
9977 | This is called after any breakpoint is hit, or after errors. */ | |
9978 | ||
9979 | void | |
fba45db2 | 9980 | breakpoint_auto_delete (bpstat bs) |
c906108c | 9981 | { |
35df4500 | 9982 | struct breakpoint *b, *b_tmp; |
c906108c SS |
9983 | |
9984 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9985 | if (bs->breakpoint_at |
9986 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9987 | && bs->stop) |
f431efe5 | 9988 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 9989 | |
35df4500 | 9990 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9991 | { |
b5de0fa7 | 9992 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9993 | delete_breakpoint (b); |
9994 | } | |
c906108c SS |
9995 | } |
9996 | ||
4a64f543 MS |
9997 | /* A comparison function for bp_location AP and BP being interfaced to |
9998 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
9999 | does breakpoint_address_is_meaningful say for its OWNER), | |
10000 | secondarily by ordering first bp_permanent OWNERed elements and | |
10001 | terciarily just ensuring the array is sorted stable way despite | |
10002 | qsort being an instable algorithm. */ | |
876fa593 JK |
10003 | |
10004 | static int | |
494cfb0f | 10005 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10006 | { |
494cfb0f JK |
10007 | struct bp_location *a = *(void **) ap; |
10008 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10009 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10010 | int a_perm = a->owner->enable_state == bp_permanent; |
10011 | int b_perm = b->owner->enable_state == bp_permanent; | |
10012 | ||
10013 | if (a->address != b->address) | |
10014 | return (a->address > b->address) - (a->address < b->address); | |
10015 | ||
10016 | /* Sort permanent breakpoints first. */ | |
10017 | if (a_perm != b_perm) | |
10018 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10019 | ||
4a64f543 MS |
10020 | /* Make the user-visible order stable across GDB runs. Locations of |
10021 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10022 | |
10023 | if (a->owner->number != b->owner->number) | |
10024 | return (a->owner->number > b->owner->number) | |
10025 | - (a->owner->number < b->owner->number); | |
10026 | ||
10027 | return (a > b) - (a < b); | |
10028 | } | |
10029 | ||
876fa593 | 10030 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10031 | bp_location_shadow_len_after_address_max according to the current |
10032 | content of the bp_location array. */ | |
f7545552 TT |
10033 | |
10034 | static void | |
876fa593 | 10035 | bp_location_target_extensions_update (void) |
f7545552 | 10036 | { |
876fa593 JK |
10037 | struct bp_location *bl, **blp_tmp; |
10038 | ||
10039 | bp_location_placed_address_before_address_max = 0; | |
10040 | bp_location_shadow_len_after_address_max = 0; | |
10041 | ||
10042 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10043 | { | |
10044 | CORE_ADDR start, end, addr; | |
10045 | ||
10046 | if (!bp_location_has_shadow (bl)) | |
10047 | continue; | |
10048 | ||
10049 | start = bl->target_info.placed_address; | |
10050 | end = start + bl->target_info.shadow_len; | |
10051 | ||
10052 | gdb_assert (bl->address >= start); | |
10053 | addr = bl->address - start; | |
10054 | if (addr > bp_location_placed_address_before_address_max) | |
10055 | bp_location_placed_address_before_address_max = addr; | |
10056 | ||
10057 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10058 | ||
10059 | gdb_assert (bl->address < end); | |
10060 | addr = end - bl->address; | |
10061 | if (addr > bp_location_shadow_len_after_address_max) | |
10062 | bp_location_shadow_len_after_address_max = addr; | |
10063 | } | |
f7545552 TT |
10064 | } |
10065 | ||
4cd9bd08 | 10066 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10067 | into the inferior, only remove already-inserted locations that no |
10068 | longer should be inserted. Functions that delete a breakpoint or | |
10069 | breakpoints should pass false, so that deleting a breakpoint | |
10070 | doesn't have the side effect of inserting the locations of other | |
10071 | breakpoints that are marked not-inserted, but should_be_inserted | |
10072 | returns true on them. | |
10073 | ||
10074 | This behaviour is useful is situations close to tear-down -- e.g., | |
10075 | after an exec, while the target still has execution, but breakpoint | |
10076 | shadows of the previous executable image should *NOT* be restored | |
10077 | to the new image; or before detaching, where the target still has | |
10078 | execution and wants to delete breakpoints from GDB's lists, and all | |
10079 | breakpoints had already been removed from the inferior. */ | |
10080 | ||
0d381245 | 10081 | static void |
b60e7edf | 10082 | update_global_location_list (int should_insert) |
0d381245 | 10083 | { |
74960c60 | 10084 | struct breakpoint *b; |
876fa593 | 10085 | struct bp_location **locp, *loc; |
f7545552 TT |
10086 | struct cleanup *cleanups; |
10087 | ||
2d134ed3 PA |
10088 | /* Used in the duplicates detection below. When iterating over all |
10089 | bp_locations, points to the first bp_location of a given address. | |
10090 | Breakpoints and watchpoints of different types are never | |
10091 | duplicates of each other. Keep one pointer for each type of | |
10092 | breakpoint/watchpoint, so we only need to loop over all locations | |
10093 | once. */ | |
10094 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10095 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10096 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10097 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10098 | |
4a64f543 MS |
10099 | /* Saved former bp_location array which we compare against the newly |
10100 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10101 | struct bp_location **old_location, **old_locp; |
10102 | unsigned old_location_count; | |
10103 | ||
10104 | old_location = bp_location; | |
10105 | old_location_count = bp_location_count; | |
10106 | bp_location = NULL; | |
10107 | bp_location_count = 0; | |
10108 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10109 | |
74960c60 | 10110 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10111 | for (loc = b->loc; loc; loc = loc->next) |
10112 | bp_location_count++; | |
10113 | ||
10114 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10115 | locp = bp_location; | |
10116 | ALL_BREAKPOINTS (b) | |
10117 | for (loc = b->loc; loc; loc = loc->next) | |
10118 | *locp++ = loc; | |
10119 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10120 | bp_location_compare); |
876fa593 JK |
10121 | |
10122 | bp_location_target_extensions_update (); | |
74960c60 | 10123 | |
4a64f543 MS |
10124 | /* Identify bp_location instances that are no longer present in the |
10125 | new list, and therefore should be freed. Note that it's not | |
10126 | necessary that those locations should be removed from inferior -- | |
10127 | if there's another location at the same address (previously | |
10128 | marked as duplicate), we don't need to remove/insert the | |
10129 | location. | |
876fa593 | 10130 | |
4a64f543 MS |
10131 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10132 | and former bp_location array state respectively. */ | |
876fa593 JK |
10133 | |
10134 | locp = bp_location; | |
10135 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10136 | old_locp++) | |
74960c60 | 10137 | { |
876fa593 | 10138 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10139 | struct bp_location **loc2p; |
876fa593 | 10140 | |
4a64f543 MS |
10141 | /* Tells if 'old_loc' is found amoung the new locations. If |
10142 | not, we have to free it. */ | |
c7d46a38 | 10143 | int found_object = 0; |
20874c92 VP |
10144 | /* Tells if the location should remain inserted in the target. */ |
10145 | int keep_in_target = 0; | |
10146 | int removed = 0; | |
876fa593 | 10147 | |
4a64f543 MS |
10148 | /* Skip LOCP entries which will definitely never be needed. |
10149 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10150 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10151 | && (*locp)->address < old_loc->address) |
876fa593 | 10152 | locp++; |
c7d46a38 PA |
10153 | |
10154 | for (loc2p = locp; | |
10155 | (loc2p < bp_location + bp_location_count | |
10156 | && (*loc2p)->address == old_loc->address); | |
10157 | loc2p++) | |
10158 | { | |
10159 | if (*loc2p == old_loc) | |
10160 | { | |
10161 | found_object = 1; | |
10162 | break; | |
10163 | } | |
10164 | } | |
74960c60 | 10165 | |
4a64f543 MS |
10166 | /* If this location is no longer present, and inserted, look if |
10167 | there's maybe a new location at the same address. If so, | |
10168 | mark that one inserted, and don't remove this one. This is | |
10169 | needed so that we don't have a time window where a breakpoint | |
10170 | at certain location is not inserted. */ | |
74960c60 | 10171 | |
876fa593 | 10172 | if (old_loc->inserted) |
0d381245 | 10173 | { |
4a64f543 MS |
10174 | /* If the location is inserted now, we might have to remove |
10175 | it. */ | |
74960c60 | 10176 | |
876fa593 | 10177 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10178 | { |
4a64f543 MS |
10179 | /* The location is still present in the location list, |
10180 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10181 | keep_in_target = 1; |
74960c60 VP |
10182 | } |
10183 | else | |
10184 | { | |
4a64f543 MS |
10185 | /* The location is either no longer present, or got |
10186 | disabled. See if there's another location at the | |
10187 | same address, in which case we don't need to remove | |
10188 | this one from the target. */ | |
876fa593 | 10189 | |
2bdf28a0 | 10190 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10191 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10192 | { | |
876fa593 | 10193 | for (loc2p = locp; |
c7d46a38 PA |
10194 | (loc2p < bp_location + bp_location_count |
10195 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10196 | loc2p++) |
10197 | { | |
10198 | struct bp_location *loc2 = *loc2p; | |
10199 | ||
2d134ed3 | 10200 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
10201 | { |
10202 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
10203 | Duplicates check below will fix up this |
10204 | later. */ | |
c7d46a38 | 10205 | loc2->duplicate = 0; |
85d721b8 PA |
10206 | |
10207 | /* Read watchpoint locations are switched to | |
10208 | access watchpoints, if the former are not | |
10209 | supported, but the latter are. */ | |
10210 | if (is_hardware_watchpoint (old_loc->owner)) | |
10211 | { | |
10212 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10213 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10214 | } | |
10215 | ||
c7d46a38 PA |
10216 | if (loc2 != old_loc && should_be_inserted (loc2)) |
10217 | { | |
10218 | loc2->inserted = 1; | |
10219 | loc2->target_info = old_loc->target_info; | |
10220 | keep_in_target = 1; | |
10221 | break; | |
10222 | } | |
876fa593 JK |
10223 | } |
10224 | } | |
10225 | } | |
74960c60 VP |
10226 | } |
10227 | ||
20874c92 VP |
10228 | if (!keep_in_target) |
10229 | { | |
876fa593 | 10230 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10231 | { |
4a64f543 MS |
10232 | /* This is just about all we can do. We could keep |
10233 | this location on the global list, and try to | |
10234 | remove it next time, but there's no particular | |
10235 | reason why we will succeed next time. | |
20874c92 | 10236 | |
4a64f543 MS |
10237 | Note that at this point, old_loc->owner is still |
10238 | valid, as delete_breakpoint frees the breakpoint | |
10239 | only after calling us. */ | |
3e43a32a MS |
10240 | printf_filtered (_("warning: Error removing " |
10241 | "breakpoint %d\n"), | |
876fa593 | 10242 | old_loc->owner->number); |
20874c92 VP |
10243 | } |
10244 | removed = 1; | |
10245 | } | |
0d381245 | 10246 | } |
74960c60 VP |
10247 | |
10248 | if (!found_object) | |
1c5cfe86 | 10249 | { |
db82e815 PA |
10250 | if (removed && non_stop |
10251 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10252 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10253 | { |
db82e815 PA |
10254 | /* This location was removed from the target. In |
10255 | non-stop mode, a race condition is possible where | |
10256 | we've removed a breakpoint, but stop events for that | |
10257 | breakpoint are already queued and will arrive later. | |
10258 | We apply an heuristic to be able to distinguish such | |
10259 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10260 | breakpoint location for a bit, and will retire it | |
10261 | after we see some number of events. The theory here | |
10262 | is that reporting of events should, "on the average", | |
10263 | be fair, so after a while we'll see events from all | |
10264 | threads that have anything of interest, and no longer | |
10265 | need to keep this breakpoint location around. We | |
10266 | don't hold locations forever so to reduce chances of | |
10267 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10268 | SIGTRAP. | |
10269 | ||
10270 | The heuristic failing can be disastrous on | |
10271 | decr_pc_after_break targets. | |
10272 | ||
10273 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10274 | if we fail to recognize a late breakpoint SIGTRAP, | |
10275 | because events_till_retirement has reached 0 too | |
10276 | soon, we'll fail to do the PC adjustment, and report | |
10277 | a random SIGTRAP to the user. When the user resumes | |
10278 | the inferior, it will most likely immediately crash | |
2dec564e | 10279 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10280 | corrupted, because of being resumed e.g., in the |
10281 | middle of a multi-byte instruction, or skipped a | |
10282 | one-byte instruction. This was actually seen happen | |
10283 | on native x86-linux, and should be less rare on | |
10284 | targets that do not support new thread events, like | |
10285 | remote, due to the heuristic depending on | |
10286 | thread_count. | |
10287 | ||
10288 | Mistaking a random SIGTRAP for a breakpoint trap | |
10289 | causes similar symptoms (PC adjustment applied when | |
10290 | it shouldn't), but then again, playing with SIGTRAPs | |
10291 | behind the debugger's back is asking for trouble. | |
10292 | ||
10293 | Since hardware watchpoint traps are always | |
10294 | distinguishable from other traps, so we don't need to | |
10295 | apply keep hardware watchpoint moribund locations | |
10296 | around. We simply always ignore hardware watchpoint | |
10297 | traps we can no longer explain. */ | |
10298 | ||
876fa593 JK |
10299 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10300 | old_loc->owner = NULL; | |
20874c92 | 10301 | |
876fa593 | 10302 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10303 | } |
10304 | else | |
f431efe5 PA |
10305 | { |
10306 | old_loc->owner = NULL; | |
10307 | decref_bp_location (&old_loc); | |
10308 | } | |
20874c92 | 10309 | } |
74960c60 | 10310 | } |
1c5cfe86 | 10311 | |
2d134ed3 PA |
10312 | /* Rescan breakpoints at the same address and section, marking the |
10313 | first one as "first" and any others as "duplicates". This is so | |
10314 | that the bpt instruction is only inserted once. If we have a | |
10315 | permanent breakpoint at the same place as BPT, make that one the | |
10316 | official one, and the rest as duplicates. Permanent breakpoints | |
10317 | are sorted first for the same address. | |
10318 | ||
10319 | Do the same for hardware watchpoints, but also considering the | |
10320 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 10321 | |
2d134ed3 PA |
10322 | bp_loc_first = NULL; |
10323 | wp_loc_first = NULL; | |
10324 | awp_loc_first = NULL; | |
10325 | rwp_loc_first = NULL; | |
876fa593 | 10326 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 10327 | { |
4a64f543 MS |
10328 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
10329 | non-NULL. */ | |
876fa593 | 10330 | struct breakpoint *b = loc->owner; |
2d134ed3 | 10331 | struct bp_location **loc_first_p; |
876fa593 JK |
10332 | |
10333 | if (b->enable_state == bp_disabled | |
10334 | || b->enable_state == bp_call_disabled | |
10335 | || b->enable_state == bp_startup_disabled | |
10336 | || !loc->enabled | |
10337 | || loc->shlib_disabled | |
15c3d785 | 10338 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 10339 | || is_tracepoint (b)) |
876fa593 JK |
10340 | continue; |
10341 | ||
10342 | /* Permanent breakpoint should always be inserted. */ | |
10343 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10344 | internal_error (__FILE__, __LINE__, | |
10345 | _("allegedly permanent breakpoint is not " | |
10346 | "actually inserted")); | |
10347 | ||
2d134ed3 PA |
10348 | if (b->type == bp_hardware_watchpoint) |
10349 | loc_first_p = &wp_loc_first; | |
10350 | else if (b->type == bp_read_watchpoint) | |
10351 | loc_first_p = &rwp_loc_first; | |
10352 | else if (b->type == bp_access_watchpoint) | |
10353 | loc_first_p = &awp_loc_first; | |
10354 | else | |
10355 | loc_first_p = &bp_loc_first; | |
10356 | ||
10357 | if (*loc_first_p == NULL | |
10358 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10359 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 10360 | { |
2d134ed3 | 10361 | *loc_first_p = loc; |
876fa593 JK |
10362 | loc->duplicate = 0; |
10363 | continue; | |
10364 | } | |
10365 | ||
10366 | loc->duplicate = 1; | |
10367 | ||
2d134ed3 PA |
10368 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
10369 | && b->enable_state != bp_permanent) | |
876fa593 JK |
10370 | internal_error (__FILE__, __LINE__, |
10371 | _("another breakpoint was inserted on top of " | |
10372 | "a permanent breakpoint")); | |
0d381245 | 10373 | } |
74960c60 | 10374 | |
50c71eaf | 10375 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 10376 | && (have_live_inferiors () |
2567c7d9 | 10377 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 10378 | insert_breakpoint_locations (); |
f7545552 TT |
10379 | |
10380 | do_cleanups (cleanups); | |
74960c60 VP |
10381 | } |
10382 | ||
20874c92 VP |
10383 | void |
10384 | breakpoint_retire_moribund (void) | |
10385 | { | |
10386 | struct bp_location *loc; | |
10387 | int ix; | |
10388 | ||
10389 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10390 | if (--(loc->events_till_retirement) == 0) | |
10391 | { | |
f431efe5 | 10392 | decref_bp_location (&loc); |
20874c92 VP |
10393 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
10394 | --ix; | |
10395 | } | |
10396 | } | |
10397 | ||
74960c60 | 10398 | static void |
b60e7edf | 10399 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
10400 | { |
10401 | struct gdb_exception e; | |
cc59ec59 | 10402 | |
74960c60 | 10403 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 10404 | update_global_location_list (inserting); |
0d381245 VP |
10405 | } |
10406 | ||
f431efe5 PA |
10407 | /* Clear BKP from a BPS. */ |
10408 | ||
a474d7c2 | 10409 | static void |
f431efe5 | 10410 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
10411 | { |
10412 | bpstat bs; | |
cc59ec59 | 10413 | |
a474d7c2 | 10414 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 10415 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
10416 | { |
10417 | bs->breakpoint_at = NULL; | |
10418 | bs->old_val = NULL; | |
10419 | /* bs->commands will be freed later. */ | |
10420 | } | |
10421 | } | |
10422 | ||
10423 | /* Callback for iterate_over_threads. */ | |
10424 | static int | |
f431efe5 | 10425 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 10426 | { |
f431efe5 | 10427 | struct breakpoint *bpt = data; |
cc59ec59 | 10428 | |
16c381f0 | 10429 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
10430 | return 0; |
10431 | } | |
10432 | ||
53a5351d | 10433 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 10434 | structures. */ |
c906108c SS |
10435 | |
10436 | void | |
fba45db2 | 10437 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 10438 | { |
52f0bd74 | 10439 | struct breakpoint *b; |
c906108c | 10440 | |
8a3fe4f8 | 10441 | gdb_assert (bpt != NULL); |
c906108c | 10442 | |
4a64f543 MS |
10443 | /* Has this bp already been deleted? This can happen because |
10444 | multiple lists can hold pointers to bp's. bpstat lists are | |
10445 | especial culprits. | |
10446 | ||
10447 | One example of this happening is a watchpoint's scope bp. When | |
10448 | the scope bp triggers, we notice that the watchpoint is out of | |
10449 | scope, and delete it. We also delete its scope bp. But the | |
10450 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
10451 | That bpstat is then checked for auto-deleting bp's, which are | |
10452 | deleted. | |
10453 | ||
10454 | A real solution to this problem might involve reference counts in | |
10455 | bp's, and/or giving them pointers back to their referencing | |
10456 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
10457 | storage when no more references were extent. A cheaper bandaid | |
10458 | was chosen. */ | |
c906108c SS |
10459 | if (bpt->type == bp_none) |
10460 | return; | |
10461 | ||
4a64f543 MS |
10462 | /* At least avoid this stale reference until the reference counting |
10463 | of breakpoints gets resolved. */ | |
d0fb5eae | 10464 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 10465 | { |
d0fb5eae JK |
10466 | struct breakpoint *related; |
10467 | ||
10468 | if (bpt->type == bp_watchpoint_scope) | |
10469 | watchpoint_del_at_next_stop (bpt->related_breakpoint); | |
10470 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) | |
10471 | watchpoint_del_at_next_stop (bpt); | |
10472 | ||
10473 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
10474 | for (related = bpt; related->related_breakpoint != bpt; | |
10475 | related = related->related_breakpoint); | |
10476 | related->related_breakpoint = bpt->related_breakpoint; | |
10477 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
10478 | } |
10479 | ||
a9634178 TJB |
10480 | /* watch_command_1 creates a watchpoint but only sets its number if |
10481 | update_watchpoint succeeds in creating its bp_locations. If there's | |
10482 | a problem in that process, we'll be asked to delete the half-created | |
10483 | watchpoint. In that case, don't announce the deletion. */ | |
10484 | if (bpt->number) | |
10485 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 10486 | |
c906108c SS |
10487 | if (breakpoint_chain == bpt) |
10488 | breakpoint_chain = bpt->next; | |
10489 | ||
c906108c SS |
10490 | ALL_BREAKPOINTS (b) |
10491 | if (b->next == bpt) | |
c5aa993b JM |
10492 | { |
10493 | b->next = bpt->next; | |
10494 | break; | |
10495 | } | |
c906108c | 10496 | |
9add0f1b | 10497 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
10498 | xfree (bpt->cond_string); |
10499 | xfree (bpt->cond_exp); | |
10500 | xfree (bpt->addr_string); | |
f1310107 | 10501 | xfree (bpt->addr_string_range_end); |
60e1c644 PA |
10502 | xfree (bpt->exp); |
10503 | xfree (bpt->exp_string); | |
d63d0675 | 10504 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
10505 | value_free (bpt->val); |
10506 | xfree (bpt->source_file); | |
10507 | xfree (bpt->exec_pathname); | |
a96d9b2e | 10508 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 10509 | |
f431efe5 PA |
10510 | |
10511 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
10512 | been freed. */ | |
10513 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
10514 | in all threeds for now. Note that we cannot just remove bpstats | |
10515 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
10516 | commands are associated with the bpstat; if we remove it here, | |
10517 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
10518 | event-top.c won't do anything, and temporary breakpoints with | |
10519 | commands won't work. */ | |
10520 | ||
10521 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
10522 | ||
4a64f543 MS |
10523 | /* Now that breakpoint is removed from breakpoint list, update the |
10524 | global location list. This will remove locations that used to | |
10525 | belong to this breakpoint. Do this before freeing the breakpoint | |
10526 | itself, since remove_breakpoint looks at location's owner. It | |
10527 | might be better design to have location completely | |
10528 | self-contained, but it's not the case now. */ | |
b60e7edf | 10529 | update_global_location_list (0); |
74960c60 VP |
10530 | |
10531 | ||
4a64f543 MS |
10532 | /* On the chance that someone will soon try again to delete this |
10533 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
10534 | bpt->type = bp_none; |
10535 | ||
b8c9b27d | 10536 | xfree (bpt); |
c906108c SS |
10537 | } |
10538 | ||
4d6140d9 AC |
10539 | static void |
10540 | do_delete_breakpoint_cleanup (void *b) | |
10541 | { | |
10542 | delete_breakpoint (b); | |
10543 | } | |
10544 | ||
10545 | struct cleanup * | |
10546 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
10547 | { | |
10548 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
10549 | } | |
10550 | ||
95a42b64 TT |
10551 | /* A callback for map_breakpoint_numbers that calls |
10552 | delete_breakpoint. */ | |
10553 | ||
10554 | static void | |
10555 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
10556 | { | |
10557 | delete_breakpoint (b); | |
10558 | } | |
10559 | ||
c906108c | 10560 | void |
fba45db2 | 10561 | delete_command (char *arg, int from_tty) |
c906108c | 10562 | { |
35df4500 | 10563 | struct breakpoint *b, *b_tmp; |
c906108c | 10564 | |
ea9365bb TT |
10565 | dont_repeat (); |
10566 | ||
c906108c SS |
10567 | if (arg == 0) |
10568 | { | |
10569 | int breaks_to_delete = 0; | |
10570 | ||
46c6471b PA |
10571 | /* Delete all breakpoints if no argument. Do not delete |
10572 | internal breakpoints, these have to be deleted with an | |
10573 | explicit breakpoint number argument. */ | |
c5aa993b | 10574 | ALL_BREAKPOINTS (b) |
46c6471b | 10575 | if (user_breakpoint_p (b)) |
973d738b DJ |
10576 | { |
10577 | breaks_to_delete = 1; | |
10578 | break; | |
10579 | } | |
c906108c SS |
10580 | |
10581 | /* Ask user only if there are some breakpoints to delete. */ | |
10582 | if (!from_tty | |
e2e0b3e5 | 10583 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 10584 | { |
35df4500 | 10585 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 10586 | if (user_breakpoint_p (b)) |
c5aa993b | 10587 | delete_breakpoint (b); |
c906108c SS |
10588 | } |
10589 | } | |
10590 | else | |
95a42b64 | 10591 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10592 | } |
10593 | ||
0d381245 VP |
10594 | static int |
10595 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10596 | { |
0d381245 VP |
10597 | for (; loc; loc = loc->next) |
10598 | if (!loc->shlib_disabled) | |
10599 | return 0; | |
10600 | return 1; | |
fe3f5fa8 VP |
10601 | } |
10602 | ||
776592bf DE |
10603 | /* Subroutine of update_breakpoint_locations to simplify it. |
10604 | Return non-zero if multiple fns in list LOC have the same name. | |
10605 | Null names are ignored. */ | |
10606 | ||
10607 | static int | |
10608 | ambiguous_names_p (struct bp_location *loc) | |
10609 | { | |
10610 | struct bp_location *l; | |
10611 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10612 | (int (*) (const void *, |
10613 | const void *)) streq, | |
776592bf DE |
10614 | NULL, xcalloc, xfree); |
10615 | ||
10616 | for (l = loc; l != NULL; l = l->next) | |
10617 | { | |
10618 | const char **slot; | |
10619 | const char *name = l->function_name; | |
10620 | ||
10621 | /* Allow for some names to be NULL, ignore them. */ | |
10622 | if (name == NULL) | |
10623 | continue; | |
10624 | ||
10625 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10626 | INSERT); | |
4a64f543 MS |
10627 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10628 | returns NULL. */ | |
776592bf DE |
10629 | if (*slot != NULL) |
10630 | { | |
10631 | htab_delete (htab); | |
10632 | return 1; | |
10633 | } | |
10634 | *slot = name; | |
10635 | } | |
10636 | ||
10637 | htab_delete (htab); | |
10638 | return 0; | |
10639 | } | |
10640 | ||
0fb4aa4b PA |
10641 | /* When symbols change, it probably means the sources changed as well, |
10642 | and it might mean the static tracepoint markers are no longer at | |
10643 | the same address or line numbers they used to be at last we | |
10644 | checked. Losing your static tracepoints whenever you rebuild is | |
10645 | undesirable. This function tries to resync/rematch gdb static | |
10646 | tracepoints with the markers on the target, for static tracepoints | |
10647 | that have not been set by marker id. Static tracepoint that have | |
10648 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10649 | The heuristic is: | |
10650 | ||
10651 | 1) For a tracepoint set at a specific address, look for a marker at | |
10652 | the old PC. If one is found there, assume to be the same marker. | |
10653 | If the name / string id of the marker found is different from the | |
10654 | previous known name, assume that means the user renamed the marker | |
10655 | in the sources, and output a warning. | |
10656 | ||
10657 | 2) For a tracepoint set at a given line number, look for a marker | |
10658 | at the new address of the old line number. If one is found there, | |
10659 | assume to be the same marker. If the name / string id of the | |
10660 | marker found is different from the previous known name, assume that | |
10661 | means the user renamed the marker in the sources, and output a | |
10662 | warning. | |
10663 | ||
10664 | 3) If a marker is no longer found at the same address or line, it | |
10665 | may mean the marker no longer exists. But it may also just mean | |
10666 | the code changed a bit. Maybe the user added a few lines of code | |
10667 | that made the marker move up or down (in line number terms). Ask | |
10668 | the target for info about the marker with the string id as we knew | |
10669 | it. If found, update line number and address in the matching | |
10670 | static tracepoint. This will get confused if there's more than one | |
10671 | marker with the same ID (possible in UST, although unadvised | |
10672 | precisely because it confuses tools). */ | |
10673 | ||
10674 | static struct symtab_and_line | |
10675 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10676 | { | |
10677 | struct static_tracepoint_marker marker; | |
10678 | CORE_ADDR pc; | |
10679 | int i; | |
10680 | ||
10681 | pc = sal.pc; | |
10682 | if (sal.line) | |
10683 | find_line_pc (sal.symtab, sal.line, &pc); | |
10684 | ||
10685 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10686 | { | |
10687 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10688 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10689 | b->number, | |
10690 | b->static_trace_marker_id, marker.str_id); | |
10691 | ||
10692 | xfree (b->static_trace_marker_id); | |
10693 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10694 | release_static_tracepoint_marker (&marker); | |
10695 | ||
10696 | return sal; | |
10697 | } | |
10698 | ||
10699 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10700 | by string ID. */ | |
10701 | if (!sal.explicit_pc | |
10702 | && sal.line != 0 | |
10703 | && sal.symtab != NULL | |
10704 | && b->static_trace_marker_id != NULL) | |
10705 | { | |
10706 | VEC(static_tracepoint_marker_p) *markers; | |
10707 | ||
10708 | markers | |
10709 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10710 | ||
10711 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10712 | { | |
10713 | struct symtab_and_line sal; | |
10714 | struct symbol *sym; | |
10715 | struct static_tracepoint_marker *marker; | |
10716 | ||
10717 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10718 | ||
10719 | xfree (b->static_trace_marker_id); | |
10720 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10721 | ||
10722 | warning (_("marker for static tracepoint %d (%s) not " | |
10723 | "found at previous line number"), | |
10724 | b->number, b->static_trace_marker_id); | |
10725 | ||
10726 | init_sal (&sal); | |
10727 | ||
10728 | sal.pc = marker->address; | |
10729 | ||
10730 | sal = find_pc_line (marker->address, 0); | |
10731 | sym = find_pc_sect_function (marker->address, NULL); | |
10732 | ui_out_text (uiout, "Now in "); | |
10733 | if (sym) | |
10734 | { | |
10735 | ui_out_field_string (uiout, "func", | |
10736 | SYMBOL_PRINT_NAME (sym)); | |
10737 | ui_out_text (uiout, " at "); | |
10738 | } | |
10739 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10740 | ui_out_text (uiout, ":"); | |
10741 | ||
10742 | if (ui_out_is_mi_like_p (uiout)) | |
10743 | { | |
10744 | char *fullname = symtab_to_fullname (sal.symtab); | |
10745 | ||
10746 | if (fullname) | |
10747 | ui_out_field_string (uiout, "fullname", fullname); | |
10748 | } | |
10749 | ||
10750 | ui_out_field_int (uiout, "line", sal.line); | |
10751 | ui_out_text (uiout, "\n"); | |
10752 | ||
10753 | b->line_number = sal.line; | |
10754 | ||
10755 | xfree (b->source_file); | |
10756 | if (sym) | |
10757 | b->source_file = xstrdup (sal.symtab->filename); | |
10758 | else | |
10759 | b->source_file = NULL; | |
10760 | ||
10761 | xfree (b->addr_string); | |
10762 | b->addr_string = xstrprintf ("%s:%d", | |
10763 | sal.symtab->filename, b->line_number); | |
10764 | ||
10765 | /* Might be nice to check if function changed, and warn if | |
10766 | so. */ | |
10767 | ||
10768 | release_static_tracepoint_marker (marker); | |
10769 | } | |
10770 | } | |
10771 | return sal; | |
10772 | } | |
10773 | ||
8d3788bd VP |
10774 | /* Returns 1 iff locations A and B are sufficiently same that |
10775 | we don't need to report breakpoint as changed. */ | |
10776 | ||
10777 | static int | |
10778 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
10779 | { | |
10780 | while (a && b) | |
10781 | { | |
10782 | if (a->address != b->address) | |
10783 | return 0; | |
10784 | ||
10785 | if (a->shlib_disabled != b->shlib_disabled) | |
10786 | return 0; | |
10787 | ||
10788 | if (a->enabled != b->enabled) | |
10789 | return 0; | |
10790 | ||
10791 | a = a->next; | |
10792 | b = b->next; | |
10793 | } | |
10794 | ||
10795 | if ((a == NULL) != (b == NULL)) | |
10796 | return 0; | |
10797 | ||
10798 | return 1; | |
10799 | } | |
10800 | ||
f1310107 TJB |
10801 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
10802 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
10803 | a ranged breakpoint. */ | |
10804 | ||
0e30163f | 10805 | void |
0d381245 | 10806 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
10807 | struct symtabs_and_lines sals, |
10808 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
10809 | { |
10810 | int i; | |
0d381245 VP |
10811 | struct bp_location *existing_locations = b->loc; |
10812 | ||
f1310107 TJB |
10813 | /* Ranged breakpoints have only one start location and one end location. */ |
10814 | gdb_assert (sals_end.nelts == 0 || (sals.nelts == 1 && sals_end.nelts == 1)); | |
10815 | ||
4a64f543 MS |
10816 | /* If there's no new locations, and all existing locations are |
10817 | pending, don't do anything. This optimizes the common case where | |
10818 | all locations are in the same shared library, that was unloaded. | |
10819 | We'd like to retain the location, so that when the library is | |
10820 | loaded again, we don't loose the enabled/disabled status of the | |
10821 | individual locations. */ | |
0d381245 | 10822 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10823 | return; |
10824 | ||
fe3f5fa8 VP |
10825 | b->loc = NULL; |
10826 | ||
0d381245 | 10827 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10828 | { |
0d381245 | 10829 | struct bp_location *new_loc = |
39d61571 | 10830 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10831 | |
0d381245 VP |
10832 | /* Reparse conditions, they might contain references to the |
10833 | old symtab. */ | |
10834 | if (b->cond_string != NULL) | |
10835 | { | |
f1310107 | 10836 | char *s; |
0d381245 | 10837 | struct gdb_exception e; |
fe3f5fa8 | 10838 | |
0d381245 VP |
10839 | s = b->cond_string; |
10840 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10841 | { | |
10842 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10843 | 0); | |
10844 | } | |
10845 | if (e.reason < 0) | |
10846 | { | |
3e43a32a MS |
10847 | warning (_("failed to reevaluate condition " |
10848 | "for breakpoint %d: %s"), | |
0d381245 VP |
10849 | b->number, e.message); |
10850 | new_loc->enabled = 0; | |
10851 | } | |
10852 | } | |
fe3f5fa8 | 10853 | |
0d381245 VP |
10854 | if (b->source_file != NULL) |
10855 | xfree (b->source_file); | |
10856 | if (sals.sals[i].symtab == NULL) | |
10857 | b->source_file = NULL; | |
10858 | else | |
1b36a34b | 10859 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10860 | |
0d381245 VP |
10861 | if (b->line_number == 0) |
10862 | b->line_number = sals.sals[i].line; | |
f1310107 TJB |
10863 | |
10864 | if (sals_end.nelts) | |
10865 | { | |
10866 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
10867 | ||
10868 | new_loc->length = end - sals.sals[0].pc + 1; | |
10869 | } | |
0d381245 | 10870 | } |
fe3f5fa8 | 10871 | |
514f746b AR |
10872 | /* Update locations of permanent breakpoints. */ |
10873 | if (b->enable_state == bp_permanent) | |
10874 | make_breakpoint_permanent (b); | |
10875 | ||
4a64f543 MS |
10876 | /* If possible, carry over 'disable' status from existing |
10877 | breakpoints. */ | |
0d381245 VP |
10878 | { |
10879 | struct bp_location *e = existing_locations; | |
776592bf DE |
10880 | /* If there are multiple breakpoints with the same function name, |
10881 | e.g. for inline functions, comparing function names won't work. | |
10882 | Instead compare pc addresses; this is just a heuristic as things | |
10883 | may have moved, but in practice it gives the correct answer | |
10884 | often enough until a better solution is found. */ | |
10885 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10886 | ||
0d381245 VP |
10887 | for (; e; e = e->next) |
10888 | { | |
10889 | if (!e->enabled && e->function_name) | |
10890 | { | |
10891 | struct bp_location *l = b->loc; | |
776592bf DE |
10892 | if (have_ambiguous_names) |
10893 | { | |
10894 | for (; l; l = l->next) | |
f1310107 | 10895 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
10896 | { |
10897 | l->enabled = 0; | |
10898 | break; | |
10899 | } | |
10900 | } | |
10901 | else | |
10902 | { | |
10903 | for (; l; l = l->next) | |
10904 | if (l->function_name | |
10905 | && strcmp (e->function_name, l->function_name) == 0) | |
10906 | { | |
10907 | l->enabled = 0; | |
10908 | break; | |
10909 | } | |
10910 | } | |
0d381245 VP |
10911 | } |
10912 | } | |
10913 | } | |
fe3f5fa8 | 10914 | |
8d3788bd VP |
10915 | if (!locations_are_equal (existing_locations, b->loc)) |
10916 | observer_notify_breakpoint_modified (b); | |
10917 | ||
b60e7edf | 10918 | update_global_location_list (1); |
fe3f5fa8 VP |
10919 | } |
10920 | ||
ef23e705 TJB |
10921 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
10922 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
10923 | ||
10924 | static struct symtabs_and_lines | |
10925 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
10926 | { | |
10927 | char *s; | |
58438ac1 | 10928 | int marker_spec; |
02d20e4a | 10929 | struct symtabs_and_lines sals = {0}; |
ef23e705 TJB |
10930 | struct gdb_exception e; |
10931 | ||
10932 | s = addr_string; | |
10933 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
10934 | ||
10935 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10936 | { | |
10937 | if (marker_spec) | |
10938 | { | |
10939 | sals = decode_static_tracepoint_spec (&s); | |
10940 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10941 | { | |
10942 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10943 | sals.nelts = 1; | |
10944 | } | |
10945 | else | |
10946 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10947 | } | |
10948 | else | |
58438ac1 | 10949 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, NULL); |
ef23e705 TJB |
10950 | } |
10951 | if (e.reason < 0) | |
10952 | { | |
10953 | int not_found_and_ok = 0; | |
10954 | /* For pending breakpoints, it's expected that parsing will | |
10955 | fail until the right shared library is loaded. User has | |
10956 | already told to create pending breakpoints and don't need | |
10957 | extra messages. If breakpoint is in bp_shlib_disabled | |
10958 | state, then user already saw the message about that | |
10959 | breakpoint being disabled, and don't want to see more | |
10960 | errors. */ | |
58438ac1 | 10961 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
10962 | && (b->condition_not_parsed |
10963 | || (b->loc && b->loc->shlib_disabled) | |
10964 | || b->enable_state == bp_disabled)) | |
10965 | not_found_and_ok = 1; | |
10966 | ||
10967 | if (!not_found_and_ok) | |
10968 | { | |
10969 | /* We surely don't want to warn about the same breakpoint | |
10970 | 10 times. One solution, implemented here, is disable | |
10971 | the breakpoint on error. Another solution would be to | |
10972 | have separate 'warning emitted' flag. Since this | |
10973 | happens only when a binary has changed, I don't know | |
10974 | which approach is better. */ | |
10975 | b->enable_state = bp_disabled; | |
10976 | throw_exception (e); | |
10977 | } | |
10978 | } | |
10979 | ||
58438ac1 | 10980 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 TJB |
10981 | { |
10982 | gdb_assert (sals.nelts == 1); | |
10983 | ||
10984 | resolve_sal_pc (&sals.sals[0]); | |
10985 | if (b->condition_not_parsed && s && s[0]) | |
10986 | { | |
10987 | char *cond_string = 0; | |
10988 | int thread = -1; | |
10989 | int task = 0; | |
10990 | ||
10991 | find_condition_and_thread (s, sals.sals[0].pc, | |
10992 | &cond_string, &thread, &task); | |
10993 | if (cond_string) | |
10994 | b->cond_string = cond_string; | |
10995 | b->thread = thread; | |
10996 | b->task = task; | |
10997 | b->condition_not_parsed = 0; | |
10998 | } | |
10999 | ||
11000 | if (b->type == bp_static_tracepoint && !marker_spec) | |
11001 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
ef23e705 | 11002 | |
58438ac1 TT |
11003 | *found = 1; |
11004 | } | |
11005 | else | |
11006 | *found = 0; | |
ef23e705 TJB |
11007 | |
11008 | return sals; | |
11009 | } | |
11010 | ||
11011 | /* Reevaluate a hardware or software breakpoint and recreate its locations. | |
11012 | This is necessary after symbols are read (e.g., an executable or DSO | |
11013 | was loaded, or the inferior just started). */ | |
11014 | ||
11015 | static void | |
11016 | re_set_breakpoint (struct breakpoint *b) | |
11017 | { | |
11018 | int found; | |
f1310107 | 11019 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 11020 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 11021 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
11022 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
11023 | ||
11024 | input_radix = b->input_radix; | |
11025 | save_current_space_and_thread (); | |
11026 | switch_to_program_space_and_thread (b->pspace); | |
11027 | set_language (b->language); | |
11028 | ||
11029 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
11030 | if (found) | |
11031 | { | |
11032 | make_cleanup (xfree, sals.sals); | |
11033 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
11034 | } | |
11035 | ||
f1310107 TJB |
11036 | if (b->addr_string_range_end) |
11037 | { | |
11038 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
11039 | if (found) | |
11040 | { | |
11041 | make_cleanup (xfree, sals_end.sals); | |
11042 | expanded_end = expand_line_sal_maybe (sals_end.sals[0]); | |
11043 | } | |
11044 | } | |
11045 | ||
11046 | update_breakpoint_locations (b, expanded, expanded_end); | |
ef23e705 TJB |
11047 | do_cleanups (cleanups); |
11048 | } | |
11049 | ||
c906108c SS |
11050 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
11051 | The value we return ends up being the return value from catch_errors. | |
11052 | Unused in this case. */ | |
11053 | ||
11054 | static int | |
4efb68b1 | 11055 | breakpoint_re_set_one (void *bint) |
c906108c | 11056 | { |
4a64f543 | 11057 | /* Get past catch_errs. */ |
53a5351d | 11058 | struct breakpoint *b = (struct breakpoint *) bint; |
c906108c SS |
11059 | |
11060 | switch (b->type) | |
11061 | { | |
11062 | case bp_none: | |
8a3fe4f8 | 11063 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 11064 | b->number); |
c906108c SS |
11065 | return 0; |
11066 | case bp_breakpoint: | |
11067 | case bp_hardware_breakpoint: | |
1042e4c0 | 11068 | case bp_tracepoint: |
7a697b8d | 11069 | case bp_fast_tracepoint: |
0fb4aa4b | 11070 | case bp_static_tracepoint: |
0e30163f | 11071 | case bp_gnu_ifunc_resolver: |
8bea4e01 UW |
11072 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
11073 | if (b->enable_state == bp_startup_disabled) | |
11074 | return 0; | |
11075 | ||
c906108c SS |
11076 | if (b->addr_string == NULL) |
11077 | { | |
4a64f543 | 11078 | /* Anything without a string can't be re-set. */ |
c906108c SS |
11079 | delete_breakpoint (b); |
11080 | return 0; | |
11081 | } | |
c906108c | 11082 | |
ef23e705 | 11083 | re_set_breakpoint (b); |
c906108c SS |
11084 | break; |
11085 | ||
11086 | case bp_watchpoint: | |
11087 | case bp_hardware_watchpoint: | |
11088 | case bp_read_watchpoint: | |
11089 | case bp_access_watchpoint: | |
4a64f543 MS |
11090 | /* Watchpoint can be either on expression using entirely global |
11091 | variables, or it can be on local variables. | |
11092 | ||
11093 | Watchpoints of the first kind are never auto-deleted, and | |
11094 | even persist across program restarts. Since they can use | |
11095 | variables from shared libraries, we need to reparse | |
11096 | expression as libraries are loaded and unloaded. | |
11097 | ||
11098 | Watchpoints on local variables can also change meaning as | |
11099 | result of solib event. For example, if a watchpoint uses | |
11100 | both a local and a global variables in expression, it's a | |
11101 | local watchpoint, but unloading of a shared library will make | |
11102 | the expression invalid. This is not a very common use case, | |
11103 | but we still re-evaluate expression, to avoid surprises to | |
11104 | the user. | |
0b3de036 VP |
11105 | |
11106 | Note that for local watchpoints, we re-evaluate it only if | |
11107 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
11108 | the watchpoint is out of scope and will be deleted soon. In |
11109 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
11110 | |
11111 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 11112 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
11113 | |
11114 | Don't do anything about disabled watchpoints, since they will | |
11115 | be reevaluated again when enabled. */ | |
a5606eee | 11116 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 11117 | break; |
c5aa993b JM |
11118 | /* We needn't really do anything to reset these, since the mask |
11119 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 11120 | loaded. */ |
ce78b96d | 11121 | case bp_catchpoint: |
c906108c | 11122 | break; |
c5aa993b | 11123 | |
c906108c | 11124 | default: |
a3f17187 | 11125 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 11126 | /* fall through */ |
0fd8e87f UW |
11127 | /* Delete overlay event and longjmp master breakpoints; they will be |
11128 | reset later by breakpoint_re_set. */ | |
1900040c | 11129 | case bp_overlay_event: |
0fd8e87f | 11130 | case bp_longjmp_master: |
aa7d318d | 11131 | case bp_std_terminate_master: |
186c406b | 11132 | case bp_exception_master: |
c906108c SS |
11133 | delete_breakpoint (b); |
11134 | break; | |
11135 | ||
c5aa993b JM |
11136 | /* This breakpoint is special, it's set up when the inferior |
11137 | starts and we really don't want to touch it. */ | |
c906108c SS |
11138 | case bp_shlib_event: |
11139 | ||
c4093a6a JM |
11140 | /* Like bp_shlib_event, this breakpoint type is special. |
11141 | Once it is set up, we do not want to touch it. */ | |
11142 | case bp_thread_event: | |
11143 | ||
4a64f543 MS |
11144 | /* Keep temporary breakpoints, which can be encountered when we |
11145 | step over a dlopen call and SOLIB_ADD is resetting the | |
11146 | breakpoints. Otherwise these should have been blown away via | |
11147 | the cleanup chain or by breakpoint_init_inferior when we | |
11148 | rerun the executable. */ | |
c906108c SS |
11149 | case bp_until: |
11150 | case bp_finish: | |
11151 | case bp_watchpoint_scope: | |
11152 | case bp_call_dummy: | |
aa7d318d | 11153 | case bp_std_terminate: |
c906108c | 11154 | case bp_step_resume: |
611c83ae PA |
11155 | case bp_longjmp: |
11156 | case bp_longjmp_resume: | |
186c406b TT |
11157 | case bp_exception: |
11158 | case bp_exception_resume: | |
4efc6507 | 11159 | case bp_jit_event: |
0e30163f | 11160 | case bp_gnu_ifunc_resolver_return: |
c906108c SS |
11161 | break; |
11162 | } | |
11163 | ||
11164 | return 0; | |
11165 | } | |
11166 | ||
69de3c6a | 11167 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 11168 | void |
69de3c6a | 11169 | breakpoint_re_set (void) |
c906108c | 11170 | { |
35df4500 | 11171 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11172 | enum language save_language; |
11173 | int save_input_radix; | |
6c95b8df | 11174 | struct cleanup *old_chain; |
c5aa993b | 11175 | |
c906108c SS |
11176 | save_language = current_language->la_language; |
11177 | save_input_radix = input_radix; | |
6c95b8df PA |
11178 | old_chain = save_current_program_space (); |
11179 | ||
35df4500 | 11180 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11181 | { |
4a64f543 | 11182 | /* Format possible error msg. */ |
fe3f5fa8 | 11183 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
11184 | b->number); |
11185 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 11186 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 11187 | do_cleanups (cleanups); |
c5aa993b | 11188 | } |
c906108c SS |
11189 | set_language (save_language); |
11190 | input_radix = save_input_radix; | |
e62c965a | 11191 | |
0756c555 | 11192 | jit_breakpoint_re_set (); |
4efc6507 | 11193 | |
6c95b8df PA |
11194 | do_cleanups (old_chain); |
11195 | ||
af02033e PP |
11196 | create_overlay_event_breakpoint (); |
11197 | create_longjmp_master_breakpoint (); | |
11198 | create_std_terminate_master_breakpoint (); | |
186c406b | 11199 | create_exception_master_breakpoint (); |
c906108c SS |
11200 | } |
11201 | \f | |
c906108c SS |
11202 | /* Reset the thread number of this breakpoint: |
11203 | ||
11204 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 11205 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 11206 | void |
fba45db2 | 11207 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
11208 | { |
11209 | if (b->thread != -1) | |
11210 | { | |
39f77062 KB |
11211 | if (in_thread_list (inferior_ptid)) |
11212 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
11213 | |
11214 | /* We're being called after following a fork. The new fork is | |
11215 | selected as current, and unless this was a vfork will have a | |
11216 | different program space from the original thread. Reset that | |
11217 | as well. */ | |
11218 | b->loc->pspace = current_program_space; | |
c906108c SS |
11219 | } |
11220 | } | |
11221 | ||
03ac34d5 MS |
11222 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11223 | If from_tty is nonzero, it prints a message to that effect, | |
11224 | which ends with a period (no newline). */ | |
11225 | ||
c906108c | 11226 | void |
fba45db2 | 11227 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 11228 | { |
52f0bd74 | 11229 | struct breakpoint *b; |
c906108c SS |
11230 | |
11231 | if (count < 0) | |
11232 | count = 0; | |
11233 | ||
11234 | ALL_BREAKPOINTS (b) | |
11235 | if (b->number == bptnum) | |
c5aa993b | 11236 | { |
d77f58be SS |
11237 | if (is_tracepoint (b)) |
11238 | { | |
11239 | if (from_tty && count != 0) | |
11240 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
11241 | bptnum); | |
11242 | return; | |
11243 | } | |
11244 | ||
c5aa993b | 11245 | b->ignore_count = count; |
221ea385 KS |
11246 | if (from_tty) |
11247 | { | |
11248 | if (count == 0) | |
3e43a32a MS |
11249 | printf_filtered (_("Will stop next time " |
11250 | "breakpoint %d is reached."), | |
221ea385 KS |
11251 | bptnum); |
11252 | else if (count == 1) | |
a3f17187 | 11253 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
11254 | bptnum); |
11255 | else | |
3e43a32a MS |
11256 | printf_filtered (_("Will ignore next %d " |
11257 | "crossings of breakpoint %d."), | |
221ea385 KS |
11258 | count, bptnum); |
11259 | } | |
c5aa993b | 11260 | breakpoints_changed (); |
8d3788bd | 11261 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
11262 | return; |
11263 | } | |
c906108c | 11264 | |
8a3fe4f8 | 11265 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
11266 | } |
11267 | ||
c906108c SS |
11268 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
11269 | ||
11270 | static void | |
fba45db2 | 11271 | ignore_command (char *args, int from_tty) |
c906108c SS |
11272 | { |
11273 | char *p = args; | |
52f0bd74 | 11274 | int num; |
c906108c SS |
11275 | |
11276 | if (p == 0) | |
e2e0b3e5 | 11277 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 11278 | |
c906108c | 11279 | num = get_number (&p); |
5c44784c | 11280 | if (num == 0) |
8a3fe4f8 | 11281 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 11282 | if (*p == 0) |
8a3fe4f8 | 11283 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
11284 | |
11285 | set_ignore_count (num, | |
11286 | longest_to_int (value_as_long (parse_and_eval (p))), | |
11287 | from_tty); | |
221ea385 KS |
11288 | if (from_tty) |
11289 | printf_filtered ("\n"); | |
c906108c SS |
11290 | } |
11291 | \f | |
11292 | /* Call FUNCTION on each of the breakpoints | |
11293 | whose numbers are given in ARGS. */ | |
11294 | ||
11295 | static void | |
95a42b64 TT |
11296 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
11297 | void *), | |
11298 | void *data) | |
c906108c | 11299 | { |
52f0bd74 AC |
11300 | int num; |
11301 | struct breakpoint *b, *tmp; | |
11cf8741 | 11302 | int match; |
197f0a60 | 11303 | struct get_number_or_range_state state; |
c906108c | 11304 | |
197f0a60 | 11305 | if (args == 0) |
e2e0b3e5 | 11306 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 11307 | |
197f0a60 TT |
11308 | init_number_or_range (&state, args); |
11309 | ||
11310 | while (!state.finished) | |
c906108c | 11311 | { |
197f0a60 TT |
11312 | char *p = state.string; |
11313 | ||
11cf8741 | 11314 | match = 0; |
c5aa993b | 11315 | |
197f0a60 | 11316 | num = get_number_or_range (&state); |
5c44784c | 11317 | if (num == 0) |
c5aa993b | 11318 | { |
8a3fe4f8 | 11319 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
11320 | } |
11321 | else | |
11322 | { | |
11323 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
11324 | if (b->number == num) | |
11325 | { | |
d0fb5eae JK |
11326 | struct breakpoint *related_breakpoint; |
11327 | ||
11cf8741 | 11328 | match = 1; |
d0fb5eae JK |
11329 | related_breakpoint = b; |
11330 | do | |
11331 | { | |
11332 | struct breakpoint *next_related_b; | |
11333 | ||
11334 | /* FUNCTION can be also delete_breakpoint. */ | |
11335 | next_related_b = related_breakpoint->related_breakpoint; | |
11336 | function (related_breakpoint, data); | |
11337 | ||
11338 | /* For delete_breakpoint of the last entry of the ring we | |
11339 | were traversing we would never get back to B. */ | |
11340 | if (next_related_b == related_breakpoint) | |
11341 | break; | |
11342 | related_breakpoint = next_related_b; | |
11343 | } | |
11344 | while (related_breakpoint != b); | |
11cf8741 | 11345 | break; |
5c44784c | 11346 | } |
11cf8741 | 11347 | if (match == 0) |
a3f17187 | 11348 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 11349 | } |
c906108c SS |
11350 | } |
11351 | } | |
11352 | ||
0d381245 VP |
11353 | static struct bp_location * |
11354 | find_location_by_number (char *number) | |
11355 | { | |
11356 | char *dot = strchr (number, '.'); | |
11357 | char *p1; | |
11358 | int bp_num; | |
11359 | int loc_num; | |
11360 | struct breakpoint *b; | |
11361 | struct bp_location *loc; | |
11362 | ||
11363 | *dot = '\0'; | |
11364 | ||
11365 | p1 = number; | |
197f0a60 | 11366 | bp_num = get_number (&p1); |
0d381245 VP |
11367 | if (bp_num == 0) |
11368 | error (_("Bad breakpoint number '%s'"), number); | |
11369 | ||
11370 | ALL_BREAKPOINTS (b) | |
11371 | if (b->number == bp_num) | |
11372 | { | |
11373 | break; | |
11374 | } | |
11375 | ||
11376 | if (!b || b->number != bp_num) | |
11377 | error (_("Bad breakpoint number '%s'"), number); | |
11378 | ||
11379 | p1 = dot+1; | |
197f0a60 | 11380 | loc_num = get_number (&p1); |
0d381245 VP |
11381 | if (loc_num == 0) |
11382 | error (_("Bad breakpoint location number '%s'"), number); | |
11383 | ||
11384 | --loc_num; | |
11385 | loc = b->loc; | |
11386 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
11387 | ; | |
11388 | if (!loc) | |
11389 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
11390 | ||
11391 | return loc; | |
11392 | } | |
11393 | ||
11394 | ||
1900040c MS |
11395 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11396 | If from_tty is nonzero, it prints a message to that effect, | |
11397 | which ends with a period (no newline). */ | |
11398 | ||
c906108c | 11399 | void |
fba45db2 | 11400 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11401 | { |
11402 | /* Never disable a watchpoint scope breakpoint; we want to | |
11403 | hit them when we leave scope so we can delete both the | |
11404 | watchpoint and its scope breakpoint at that time. */ | |
11405 | if (bpt->type == bp_watchpoint_scope) | |
11406 | return; | |
11407 | ||
c2c6d25f | 11408 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 11409 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
11410 | return; |
11411 | ||
b5de0fa7 | 11412 | bpt->enable_state = bp_disabled; |
c906108c | 11413 | |
b60e7edf | 11414 | update_global_location_list (0); |
c906108c | 11415 | |
8d3788bd | 11416 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
11417 | } |
11418 | ||
95a42b64 TT |
11419 | /* A callback for map_breakpoint_numbers that calls |
11420 | disable_breakpoint. */ | |
11421 | ||
11422 | static void | |
11423 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
11424 | { | |
11425 | disable_breakpoint (b); | |
11426 | } | |
11427 | ||
c906108c | 11428 | static void |
fba45db2 | 11429 | disable_command (char *args, int from_tty) |
c906108c | 11430 | { |
c906108c | 11431 | if (args == 0) |
46c6471b PA |
11432 | { |
11433 | struct breakpoint *bpt; | |
11434 | ||
11435 | ALL_BREAKPOINTS (bpt) | |
11436 | if (user_breakpoint_p (bpt)) | |
11437 | disable_breakpoint (bpt); | |
11438 | } | |
0d381245 VP |
11439 | else if (strchr (args, '.')) |
11440 | { | |
11441 | struct bp_location *loc = find_location_by_number (args); | |
11442 | if (loc) | |
11443 | loc->enabled = 0; | |
b60e7edf | 11444 | update_global_location_list (0); |
0d381245 | 11445 | } |
c906108c | 11446 | else |
95a42b64 | 11447 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
11448 | } |
11449 | ||
11450 | static void | |
fba45db2 | 11451 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 11452 | { |
afe38095 | 11453 | int target_resources_ok; |
c906108c SS |
11454 | |
11455 | if (bpt->type == bp_hardware_breakpoint) | |
11456 | { | |
11457 | int i; | |
c5aa993b | 11458 | i = hw_breakpoint_used_count (); |
53a5351d | 11459 | target_resources_ok = |
d92524f1 | 11460 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 11461 | i + 1, 0); |
c906108c | 11462 | if (target_resources_ok == 0) |
8a3fe4f8 | 11463 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 11464 | else if (target_resources_ok < 0) |
8a3fe4f8 | 11465 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
11466 | } |
11467 | ||
cc60f2e3 | 11468 | if (is_watchpoint (bpt)) |
c906108c | 11469 | { |
d07205c2 JK |
11470 | /* Initialize it just to avoid a GCC false warning. */ |
11471 | enum enable_state orig_enable_state = 0; | |
dde02812 ES |
11472 | struct gdb_exception e; |
11473 | ||
11474 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 11475 | { |
1e718ff1 TJB |
11476 | orig_enable_state = bpt->enable_state; |
11477 | bpt->enable_state = bp_enabled; | |
dde02812 | 11478 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 11479 | } |
dde02812 | 11480 | if (e.reason < 0) |
c5aa993b | 11481 | { |
1e718ff1 | 11482 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
11483 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
11484 | bpt->number); | |
11485 | return; | |
c5aa993b | 11486 | } |
c906108c | 11487 | } |
0101ce28 | 11488 | |
b4c291bb KH |
11489 | if (bpt->enable_state != bp_permanent) |
11490 | bpt->enable_state = bp_enabled; | |
11491 | bpt->disposition = disposition; | |
b60e7edf | 11492 | update_global_location_list (1); |
b4c291bb KH |
11493 | breakpoints_changed (); |
11494 | ||
8d3788bd | 11495 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
11496 | } |
11497 | ||
fe3f5fa8 | 11498 | |
c906108c | 11499 | void |
fba45db2 | 11500 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11501 | { |
11502 | do_enable_breakpoint (bpt, bpt->disposition); | |
11503 | } | |
11504 | ||
95a42b64 TT |
11505 | /* A callback for map_breakpoint_numbers that calls |
11506 | enable_breakpoint. */ | |
11507 | ||
11508 | static void | |
11509 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
11510 | { | |
11511 | enable_breakpoint (b); | |
11512 | } | |
11513 | ||
c906108c SS |
11514 | /* The enable command enables the specified breakpoints (or all defined |
11515 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 11516 | in stopping the inferior. */ |
c906108c | 11517 | |
c906108c | 11518 | static void |
fba45db2 | 11519 | enable_command (char *args, int from_tty) |
c906108c | 11520 | { |
c906108c | 11521 | if (args == 0) |
46c6471b PA |
11522 | { |
11523 | struct breakpoint *bpt; | |
11524 | ||
11525 | ALL_BREAKPOINTS (bpt) | |
11526 | if (user_breakpoint_p (bpt)) | |
11527 | enable_breakpoint (bpt); | |
11528 | } | |
0d381245 VP |
11529 | else if (strchr (args, '.')) |
11530 | { | |
11531 | struct bp_location *loc = find_location_by_number (args); | |
11532 | if (loc) | |
11533 | loc->enabled = 1; | |
b60e7edf | 11534 | update_global_location_list (1); |
0d381245 | 11535 | } |
c906108c | 11536 | else |
95a42b64 | 11537 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
11538 | } |
11539 | ||
11540 | static void | |
95a42b64 | 11541 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11542 | { |
b5de0fa7 | 11543 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
11544 | } |
11545 | ||
c906108c | 11546 | static void |
fba45db2 | 11547 | enable_once_command (char *args, int from_tty) |
c906108c | 11548 | { |
95a42b64 | 11549 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
11550 | } |
11551 | ||
11552 | static void | |
95a42b64 | 11553 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11554 | { |
b5de0fa7 | 11555 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
11556 | } |
11557 | ||
c906108c | 11558 | static void |
fba45db2 | 11559 | enable_delete_command (char *args, int from_tty) |
c906108c | 11560 | { |
95a42b64 | 11561 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
11562 | } |
11563 | \f | |
fa8d40ab JJ |
11564 | static void |
11565 | set_breakpoint_cmd (char *args, int from_tty) | |
11566 | { | |
11567 | } | |
11568 | ||
11569 | static void | |
11570 | show_breakpoint_cmd (char *args, int from_tty) | |
11571 | { | |
11572 | } | |
11573 | ||
1f3b5d1b PP |
11574 | /* Invalidate last known value of any hardware watchpoint if |
11575 | the memory which that value represents has been written to by | |
11576 | GDB itself. */ | |
11577 | ||
11578 | static void | |
11579 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
11580 | const bfd_byte *data) | |
11581 | { | |
11582 | struct breakpoint *bp; | |
11583 | ||
11584 | ALL_BREAKPOINTS (bp) | |
11585 | if (bp->enable_state == bp_enabled | |
11586 | && bp->type == bp_hardware_watchpoint | |
11587 | && bp->val_valid && bp->val) | |
11588 | { | |
11589 | struct bp_location *loc; | |
11590 | ||
11591 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
11592 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
11593 | && loc->address + loc->length > addr | |
11594 | && addr + len > loc->address) | |
11595 | { | |
11596 | value_free (bp->val); | |
11597 | bp->val = NULL; | |
11598 | bp->val_valid = 0; | |
11599 | } | |
11600 | } | |
11601 | } | |
11602 | ||
c906108c SS |
11603 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
11604 | ||
11605 | struct symtabs_and_lines | |
fba45db2 | 11606 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
11607 | { |
11608 | struct symtabs_and_lines sals; | |
cc59ec59 | 11609 | |
c906108c | 11610 | if (string == 0) |
8a3fe4f8 | 11611 | error (_("Empty line specification.")); |
c906108c SS |
11612 | if (default_breakpoint_valid) |
11613 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
11614 | default_breakpoint_symtab, |
11615 | default_breakpoint_line, | |
58438ac1 | 11616 | NULL); |
c906108c SS |
11617 | else |
11618 | sals = decode_line_1 (&string, funfirstline, | |
58438ac1 | 11619 | (struct symtab *) NULL, 0, NULL); |
c906108c | 11620 | if (*string) |
8a3fe4f8 | 11621 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
11622 | return sals; |
11623 | } | |
8181d85f DJ |
11624 | |
11625 | /* Create and insert a raw software breakpoint at PC. Return an | |
11626 | identifier, which should be used to remove the breakpoint later. | |
11627 | In general, places which call this should be using something on the | |
11628 | breakpoint chain instead; this function should be eliminated | |
11629 | someday. */ | |
11630 | ||
11631 | void * | |
6c95b8df PA |
11632 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
11633 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
11634 | { |
11635 | struct bp_target_info *bp_tgt; | |
11636 | ||
6c95b8df | 11637 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 11638 | |
6c95b8df | 11639 | bp_tgt->placed_address_space = aspace; |
8181d85f | 11640 | bp_tgt->placed_address = pc; |
6c95b8df | 11641 | |
a6d9a66e | 11642 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
11643 | { |
11644 | /* Could not insert the breakpoint. */ | |
11645 | xfree (bp_tgt); | |
11646 | return NULL; | |
11647 | } | |
11648 | ||
11649 | return bp_tgt; | |
11650 | } | |
11651 | ||
4a64f543 MS |
11652 | /* Remove a breakpoint BP inserted by |
11653 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11654 | |
11655 | int | |
a6d9a66e | 11656 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11657 | { |
11658 | struct bp_target_info *bp_tgt = bp; | |
11659 | int ret; | |
11660 | ||
a6d9a66e | 11661 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11662 | xfree (bp_tgt); |
11663 | ||
11664 | return ret; | |
11665 | } | |
11666 | ||
4a64f543 MS |
11667 | /* One (or perhaps two) breakpoints used for software single |
11668 | stepping. */ | |
8181d85f DJ |
11669 | |
11670 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11671 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11672 | |
11673 | /* Create and insert a breakpoint for software single step. */ | |
11674 | ||
11675 | void | |
6c95b8df | 11676 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11677 | struct address_space *aspace, |
11678 | CORE_ADDR next_pc) | |
8181d85f DJ |
11679 | { |
11680 | void **bpt_p; | |
11681 | ||
11682 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11683 | { |
11684 | bpt_p = &single_step_breakpoints[0]; | |
11685 | single_step_gdbarch[0] = gdbarch; | |
11686 | } | |
8181d85f DJ |
11687 | else |
11688 | { | |
11689 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11690 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11691 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11692 | } |
11693 | ||
4a64f543 MS |
11694 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11695 | be to only create the breakpoints once, and actually put them on | |
11696 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11697 | We could adjust the addresses each time they were needed. Doing | |
11698 | this requires corresponding changes elsewhere where single step | |
11699 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11700 | |
6c95b8df | 11701 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11702 | if (*bpt_p == NULL) |
5af949e3 UW |
11703 | error (_("Could not insert single-step breakpoint at %s"), |
11704 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11705 | } |
11706 | ||
f02253f1 HZ |
11707 | /* Check if the breakpoints used for software single stepping |
11708 | were inserted or not. */ | |
11709 | ||
11710 | int | |
11711 | single_step_breakpoints_inserted (void) | |
11712 | { | |
11713 | return (single_step_breakpoints[0] != NULL | |
11714 | || single_step_breakpoints[1] != NULL); | |
11715 | } | |
11716 | ||
8181d85f DJ |
11717 | /* Remove and delete any breakpoints used for software single step. */ |
11718 | ||
11719 | void | |
11720 | remove_single_step_breakpoints (void) | |
11721 | { | |
11722 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11723 | ||
11724 | /* See insert_single_step_breakpoint for more about this deprecated | |
11725 | call. */ | |
a6d9a66e UW |
11726 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11727 | single_step_breakpoints[0]); | |
11728 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11729 | single_step_breakpoints[0] = NULL; |
11730 | ||
11731 | if (single_step_breakpoints[1] != NULL) | |
11732 | { | |
a6d9a66e UW |
11733 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11734 | single_step_breakpoints[1]); | |
11735 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11736 | single_step_breakpoints[1] = NULL; |
11737 | } | |
11738 | } | |
11739 | ||
d03285ec UW |
11740 | /* Delete software single step breakpoints without removing them from |
11741 | the inferior. This is intended to be used if the inferior's address | |
11742 | space where they were inserted is already gone, e.g. after exit or | |
11743 | exec. */ | |
11744 | ||
11745 | void | |
11746 | cancel_single_step_breakpoints (void) | |
11747 | { | |
11748 | int i; | |
11749 | ||
11750 | for (i = 0; i < 2; i++) | |
11751 | if (single_step_breakpoints[i]) | |
11752 | { | |
11753 | xfree (single_step_breakpoints[i]); | |
11754 | single_step_breakpoints[i] = NULL; | |
11755 | single_step_gdbarch[i] = NULL; | |
11756 | } | |
11757 | } | |
11758 | ||
11759 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11760 | removing them. */ | |
11761 | ||
11762 | static void | |
11763 | detach_single_step_breakpoints (void) | |
11764 | { | |
11765 | int i; | |
11766 | ||
11767 | for (i = 0; i < 2; i++) | |
11768 | if (single_step_breakpoints[i]) | |
11769 | target_remove_breakpoint (single_step_gdbarch[i], | |
11770 | single_step_breakpoints[i]); | |
11771 | } | |
11772 | ||
4a64f543 MS |
11773 | /* Check whether a software single-step breakpoint is inserted at |
11774 | PC. */ | |
1aafd4da UW |
11775 | |
11776 | static int | |
cc59ec59 MS |
11777 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11778 | CORE_ADDR pc) | |
1aafd4da UW |
11779 | { |
11780 | int i; | |
11781 | ||
11782 | for (i = 0; i < 2; i++) | |
11783 | { | |
11784 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11785 | if (bp_tgt |
11786 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11787 | bp_tgt->placed_address, | |
11788 | aspace, pc)) | |
1aafd4da UW |
11789 | return 1; |
11790 | } | |
11791 | ||
11792 | return 0; | |
11793 | } | |
11794 | ||
a96d9b2e SDJ |
11795 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11796 | non-zero otherwise. */ | |
11797 | static int | |
11798 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11799 | { | |
11800 | if (syscall_catchpoint_p (bp) | |
11801 | && bp->enable_state != bp_disabled | |
11802 | && bp->enable_state != bp_call_disabled) | |
11803 | return 1; | |
11804 | else | |
11805 | return 0; | |
11806 | } | |
11807 | ||
11808 | int | |
11809 | catch_syscall_enabled (void) | |
11810 | { | |
11811 | struct inferior *inf = current_inferior (); | |
11812 | ||
11813 | return inf->total_syscalls_count != 0; | |
11814 | } | |
11815 | ||
11816 | int | |
11817 | catching_syscall_number (int syscall_number) | |
11818 | { | |
11819 | struct breakpoint *bp; | |
11820 | ||
11821 | ALL_BREAKPOINTS (bp) | |
11822 | if (is_syscall_catchpoint_enabled (bp)) | |
11823 | { | |
11824 | if (bp->syscalls_to_be_caught) | |
11825 | { | |
11826 | int i, iter; | |
11827 | for (i = 0; | |
11828 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11829 | i++) | |
11830 | if (syscall_number == iter) | |
11831 | return 1; | |
11832 | } | |
11833 | else | |
11834 | return 1; | |
11835 | } | |
11836 | ||
11837 | return 0; | |
11838 | } | |
11839 | ||
11840 | /* Complete syscall names. Used by "catch syscall". */ | |
11841 | static char ** | |
11842 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11843 | char *text, char *word) | |
11844 | { | |
11845 | const char **list = get_syscall_names (); | |
c38eea1a MS |
11846 | char **retlist |
11847 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 11848 | |
c38eea1a MS |
11849 | xfree (list); |
11850 | return retlist; | |
a96d9b2e SDJ |
11851 | } |
11852 | ||
1042e4c0 SS |
11853 | /* Tracepoint-specific operations. */ |
11854 | ||
11855 | /* Set tracepoint count to NUM. */ | |
11856 | static void | |
11857 | set_tracepoint_count (int num) | |
11858 | { | |
11859 | tracepoint_count = num; | |
4fa62494 | 11860 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11861 | } |
11862 | ||
11863 | void | |
11864 | trace_command (char *arg, int from_tty) | |
11865 | { | |
8cdf0e15 VP |
11866 | if (create_breakpoint (get_current_arch (), |
11867 | arg, | |
11868 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11869 | 0 /* tempflag */, |
11870 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11871 | 0 /* Ignore count */, |
11872 | pending_break_support, | |
11873 | NULL, | |
11874 | from_tty, | |
84f4c1fe PM |
11875 | 1 /* enabled */, |
11876 | 0 /* internal */)) | |
fd9b8c24 | 11877 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11878 | } |
11879 | ||
7a697b8d SS |
11880 | void |
11881 | ftrace_command (char *arg, int from_tty) | |
11882 | { | |
8cdf0e15 VP |
11883 | if (create_breakpoint (get_current_arch (), |
11884 | arg, | |
11885 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11886 | 0 /* tempflag */, |
11887 | bp_fast_tracepoint /* type_wanted */, | |
11888 | 0 /* Ignore count */, | |
11889 | pending_break_support, | |
11890 | NULL, | |
11891 | from_tty, | |
84f4c1fe PM |
11892 | 1 /* enabled */, |
11893 | 0 /* internal */)) | |
0fb4aa4b PA |
11894 | set_tracepoint_count (breakpoint_count); |
11895 | } | |
11896 | ||
11897 | /* strace command implementation. Creates a static tracepoint. */ | |
11898 | ||
11899 | void | |
11900 | strace_command (char *arg, int from_tty) | |
11901 | { | |
11902 | if (create_breakpoint (get_current_arch (), | |
11903 | arg, | |
11904 | NULL, 0, 1 /* parse arg */, | |
11905 | 0 /* tempflag */, | |
11906 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11907 | 0 /* Ignore count */, |
11908 | pending_break_support, | |
11909 | NULL, | |
11910 | from_tty, | |
84f4c1fe PM |
11911 | 1 /* enabled */, |
11912 | 0 /* internal */)) | |
fd9b8c24 | 11913 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11914 | } |
11915 | ||
409873ef SS |
11916 | /* Set up a fake reader function that gets command lines from a linked |
11917 | list that was acquired during tracepoint uploading. */ | |
11918 | ||
11919 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11920 | static int next_cmd; |
409873ef SS |
11921 | |
11922 | static char * | |
11923 | read_uploaded_action (void) | |
11924 | { | |
11925 | char *rslt; | |
11926 | ||
3149d8c1 | 11927 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11928 | |
3149d8c1 | 11929 | next_cmd++; |
409873ef SS |
11930 | |
11931 | return rslt; | |
11932 | } | |
11933 | ||
00bf0b85 SS |
11934 | /* Given information about a tracepoint as recorded on a target (which |
11935 | can be either a live system or a trace file), attempt to create an | |
11936 | equivalent GDB tracepoint. This is not a reliable process, since | |
11937 | the target does not necessarily have all the information used when | |
11938 | the tracepoint was originally defined. */ | |
11939 | ||
11940 | struct breakpoint * | |
11941 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11942 | { |
409873ef | 11943 | char *addr_str, small_buf[100]; |
d5551862 | 11944 | struct breakpoint *tp; |
fd9b8c24 | 11945 | |
409873ef SS |
11946 | if (utp->at_string) |
11947 | addr_str = utp->at_string; | |
11948 | else | |
11949 | { | |
11950 | /* In the absence of a source location, fall back to raw | |
11951 | address. Since there is no way to confirm that the address | |
11952 | means the same thing as when the trace was started, warn the | |
11953 | user. */ | |
3e43a32a MS |
11954 | warning (_("Uploaded tracepoint %d has no " |
11955 | "source location, using raw address"), | |
409873ef SS |
11956 | utp->number); |
11957 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11958 | addr_str = small_buf; | |
11959 | } | |
11960 | ||
11961 | /* There's not much we can do with a sequence of bytecodes. */ | |
11962 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
11963 | warning (_("Uploaded tracepoint %d condition " |
11964 | "has no source form, ignoring it"), | |
409873ef | 11965 | utp->number); |
d5551862 | 11966 | |
8cdf0e15 | 11967 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11968 | addr_str, |
11969 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11970 | 0 /* tempflag */, |
0fb4aa4b | 11971 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11972 | 0 /* Ignore count */, |
11973 | pending_break_support, | |
11974 | NULL, | |
11975 | 0 /* from_tty */, | |
84f4c1fe PM |
11976 | utp->enabled /* enabled */, |
11977 | 0 /* internal */)) | |
fd9b8c24 PA |
11978 | return NULL; |
11979 | ||
00bf0b85 SS |
11980 | set_tracepoint_count (breakpoint_count); |
11981 | ||
409873ef | 11982 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11983 | tp = get_tracepoint (tracepoint_count); |
11984 | gdb_assert (tp != NULL); | |
d5551862 | 11985 | |
00bf0b85 SS |
11986 | if (utp->pass > 0) |
11987 | { | |
409873ef | 11988 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11989 | |
409873ef | 11990 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11991 | } |
11992 | ||
409873ef SS |
11993 | /* If we have uploaded versions of the original commands, set up a |
11994 | special-purpose "reader" function and call the usual command line | |
11995 | reader, then pass the result to the breakpoint command-setting | |
11996 | function. */ | |
3149d8c1 | 11997 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11998 | { |
409873ef | 11999 | struct command_line *cmd_list; |
00bf0b85 | 12000 | |
409873ef | 12001 | this_utp = utp; |
3149d8c1 | 12002 | next_cmd = 0; |
d5551862 | 12003 | |
409873ef SS |
12004 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
12005 | ||
12006 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 12007 | } |
3149d8c1 SS |
12008 | else if (!VEC_empty (char_ptr, utp->actions) |
12009 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
12010 | warning (_("Uploaded tracepoint %d actions " |
12011 | "have no source form, ignoring them"), | |
409873ef | 12012 | utp->number); |
00bf0b85 SS |
12013 | |
12014 | return tp; | |
12015 | } | |
12016 | ||
1042e4c0 SS |
12017 | /* Print information on tracepoint number TPNUM_EXP, or all if |
12018 | omitted. */ | |
12019 | ||
12020 | static void | |
e5a67952 | 12021 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 12022 | { |
e5a67952 | 12023 | int num_printed; |
1042e4c0 | 12024 | |
e5a67952 | 12025 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
12026 | |
12027 | if (num_printed == 0) | |
1042e4c0 | 12028 | { |
e5a67952 | 12029 | if (args == NULL || *args == '\0') |
d77f58be SS |
12030 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
12031 | else | |
e5a67952 | 12032 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 12033 | } |
ad443146 SS |
12034 | |
12035 | default_collect_info (); | |
1042e4c0 SS |
12036 | } |
12037 | ||
4a64f543 | 12038 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
12039 | Not supported by all targets. */ |
12040 | static void | |
12041 | enable_trace_command (char *args, int from_tty) | |
12042 | { | |
12043 | enable_command (args, from_tty); | |
12044 | } | |
12045 | ||
4a64f543 | 12046 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
12047 | Not supported by all targets. */ |
12048 | static void | |
12049 | disable_trace_command (char *args, int from_tty) | |
12050 | { | |
12051 | disable_command (args, from_tty); | |
12052 | } | |
12053 | ||
4a64f543 | 12054 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
12055 | static void |
12056 | delete_trace_command (char *arg, int from_tty) | |
12057 | { | |
35df4500 | 12058 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
12059 | |
12060 | dont_repeat (); | |
12061 | ||
12062 | if (arg == 0) | |
12063 | { | |
12064 | int breaks_to_delete = 0; | |
12065 | ||
12066 | /* Delete all breakpoints if no argument. | |
12067 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
12068 | have to be deleted with an explicit breakpoint number |
12069 | argument. */ | |
1042e4c0 | 12070 | ALL_TRACEPOINTS (b) |
46c6471b | 12071 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
12072 | { |
12073 | breaks_to_delete = 1; | |
12074 | break; | |
12075 | } | |
1042e4c0 SS |
12076 | |
12077 | /* Ask user only if there are some breakpoints to delete. */ | |
12078 | if (!from_tty | |
12079 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
12080 | { | |
35df4500 | 12081 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 12082 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 12083 | delete_breakpoint (b); |
1042e4c0 SS |
12084 | } |
12085 | } | |
12086 | else | |
95a42b64 | 12087 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
12088 | } |
12089 | ||
197f0a60 TT |
12090 | /* Helper function for trace_pass_command. */ |
12091 | ||
12092 | static void | |
12093 | trace_pass_set_count (struct breakpoint *bp, int count, int from_tty) | |
12094 | { | |
12095 | bp->pass_count = count; | |
12096 | observer_notify_tracepoint_modified (bp->number); | |
12097 | if (from_tty) | |
12098 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
12099 | bp->number, count); | |
12100 | } | |
12101 | ||
1042e4c0 SS |
12102 | /* Set passcount for tracepoint. |
12103 | ||
12104 | First command argument is passcount, second is tracepoint number. | |
12105 | If tracepoint number omitted, apply to most recently defined. | |
12106 | Also accepts special argument "all". */ | |
12107 | ||
12108 | static void | |
12109 | trace_pass_command (char *args, int from_tty) | |
12110 | { | |
197f0a60 | 12111 | struct breakpoint *t1; |
1042e4c0 | 12112 | unsigned int count; |
1042e4c0 SS |
12113 | |
12114 | if (args == 0 || *args == 0) | |
3e43a32a MS |
12115 | error (_("passcount command requires an " |
12116 | "argument (count + optional TP num)")); | |
1042e4c0 | 12117 | |
4a64f543 | 12118 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
12119 | |
12120 | while (*args && isspace ((int) *args)) | |
12121 | args++; | |
12122 | ||
12123 | if (*args && strncasecmp (args, "all", 3) == 0) | |
12124 | { | |
12125 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
12126 | if (*args) |
12127 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 12128 | |
197f0a60 TT |
12129 | ALL_TRACEPOINTS (t1) |
12130 | { | |
12131 | trace_pass_set_count (t1, count, from_tty); | |
12132 | } | |
12133 | } | |
12134 | else if (*args == '\0') | |
1042e4c0 | 12135 | { |
197f0a60 | 12136 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 12137 | if (t1) |
197f0a60 TT |
12138 | trace_pass_set_count (t1, count, from_tty); |
12139 | } | |
12140 | else | |
12141 | { | |
12142 | struct get_number_or_range_state state; | |
12143 | ||
12144 | init_number_or_range (&state, args); | |
12145 | while (!state.finished) | |
1042e4c0 | 12146 | { |
197f0a60 TT |
12147 | t1 = get_tracepoint_by_number (&args, &state, 1); |
12148 | if (t1) | |
12149 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
12150 | } |
12151 | } | |
1042e4c0 SS |
12152 | } |
12153 | ||
12154 | struct breakpoint * | |
12155 | get_tracepoint (int num) | |
12156 | { | |
12157 | struct breakpoint *t; | |
12158 | ||
12159 | ALL_TRACEPOINTS (t) | |
12160 | if (t->number == num) | |
12161 | return t; | |
12162 | ||
12163 | return NULL; | |
12164 | } | |
12165 | ||
d5551862 SS |
12166 | /* Find the tracepoint with the given target-side number (which may be |
12167 | different from the tracepoint number after disconnecting and | |
12168 | reconnecting). */ | |
12169 | ||
12170 | struct breakpoint * | |
12171 | get_tracepoint_by_number_on_target (int num) | |
12172 | { | |
12173 | struct breakpoint *t; | |
12174 | ||
12175 | ALL_TRACEPOINTS (t) | |
12176 | if (t->number_on_target == num) | |
12177 | return t; | |
12178 | ||
12179 | return NULL; | |
12180 | } | |
12181 | ||
1042e4c0 | 12182 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
12183 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
12184 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 SS |
12185 | recent tracepoint (tracepoint_count) is returned. */ |
12186 | struct breakpoint * | |
197f0a60 TT |
12187 | get_tracepoint_by_number (char **arg, |
12188 | struct get_number_or_range_state *state, | |
12189 | int optional_p) | |
1042e4c0 SS |
12190 | { |
12191 | extern int tracepoint_count; | |
12192 | struct breakpoint *t; | |
12193 | int tpnum; | |
12194 | char *instring = arg == NULL ? NULL : *arg; | |
12195 | ||
197f0a60 TT |
12196 | if (state) |
12197 | { | |
12198 | gdb_assert (!state->finished); | |
12199 | tpnum = get_number_or_range (state); | |
12200 | } | |
12201 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
12202 | { |
12203 | if (optional_p) | |
12204 | tpnum = tracepoint_count; | |
12205 | else | |
12206 | error_no_arg (_("tracepoint number")); | |
12207 | } | |
12208 | else | |
197f0a60 | 12209 | tpnum = get_number (arg); |
1042e4c0 SS |
12210 | |
12211 | if (tpnum <= 0) | |
12212 | { | |
12213 | if (instring && *instring) | |
12214 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
12215 | instring); | |
12216 | else | |
3e43a32a MS |
12217 | printf_filtered (_("Tracepoint argument missing " |
12218 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
12219 | return NULL; |
12220 | } | |
12221 | ||
12222 | ALL_TRACEPOINTS (t) | |
12223 | if (t->number == tpnum) | |
12224 | { | |
12225 | return t; | |
12226 | } | |
12227 | ||
1042e4c0 SS |
12228 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
12229 | return NULL; | |
12230 | } | |
12231 | ||
6149aea9 PA |
12232 | /* Save information on user settable breakpoints (watchpoints, etc) to |
12233 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
12234 | on each breakpoint and only include the ones for which it returns | |
12235 | non-zero. */ | |
12236 | ||
1042e4c0 | 12237 | static void |
6149aea9 PA |
12238 | save_breakpoints (char *filename, int from_tty, |
12239 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
12240 | { |
12241 | struct breakpoint *tp; | |
6149aea9 | 12242 | int any = 0; |
a7bdde9e | 12243 | char *pathname; |
1042e4c0 | 12244 | struct cleanup *cleanup; |
a7bdde9e | 12245 | struct ui_file *fp; |
6149aea9 | 12246 | int extra_trace_bits = 0; |
1042e4c0 | 12247 | |
6149aea9 PA |
12248 | if (filename == 0 || *filename == 0) |
12249 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
12250 | |
12251 | /* See if we have anything to save. */ | |
6149aea9 | 12252 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 12253 | { |
6149aea9 | 12254 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 12255 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
12256 | continue; |
12257 | ||
12258 | /* If we have a filter, only save the breakpoints it accepts. */ | |
12259 | if (filter && !filter (tp)) | |
12260 | continue; | |
12261 | ||
12262 | any = 1; | |
12263 | ||
12264 | if (is_tracepoint (tp)) | |
12265 | { | |
12266 | extra_trace_bits = 1; | |
12267 | ||
12268 | /* We can stop searching. */ | |
12269 | break; | |
12270 | } | |
1042e4c0 | 12271 | } |
6149aea9 PA |
12272 | |
12273 | if (!any) | |
1042e4c0 | 12274 | { |
6149aea9 | 12275 | warning (_("Nothing to save.")); |
1042e4c0 SS |
12276 | return; |
12277 | } | |
12278 | ||
6149aea9 | 12279 | pathname = tilde_expand (filename); |
1042e4c0 | 12280 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 12281 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 12282 | if (!fp) |
6149aea9 PA |
12283 | error (_("Unable to open file '%s' for saving (%s)"), |
12284 | filename, safe_strerror (errno)); | |
a7bdde9e | 12285 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 12286 | |
6149aea9 PA |
12287 | if (extra_trace_bits) |
12288 | save_trace_state_variables (fp); | |
8bf6485c | 12289 | |
6149aea9 | 12290 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 12291 | { |
6149aea9 | 12292 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 12293 | if (!user_breakpoint_p (tp)) |
6149aea9 | 12294 | continue; |
8bf6485c | 12295 | |
6149aea9 PA |
12296 | /* If we have a filter, only save the breakpoints it accepts. */ |
12297 | if (filter && !filter (tp)) | |
12298 | continue; | |
12299 | ||
26063d49 | 12300 | if (tp->ops != NULL && tp->ops->print_recreate != NULL) |
6149aea9 | 12301 | (tp->ops->print_recreate) (tp, fp); |
1042e4c0 SS |
12302 | else |
12303 | { | |
6149aea9 PA |
12304 | if (tp->type == bp_fast_tracepoint) |
12305 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
12306 | if (tp->type == bp_static_tracepoint) |
12307 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
12308 | else if (tp->type == bp_tracepoint) |
12309 | fprintf_unfiltered (fp, "trace"); | |
12310 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12311 | fprintf_unfiltered (fp, "tbreak"); | |
12312 | else if (tp->type == bp_breakpoint) | |
12313 | fprintf_unfiltered (fp, "break"); | |
12314 | else if (tp->type == bp_hardware_breakpoint | |
12315 | && tp->disposition == disp_del) | |
12316 | fprintf_unfiltered (fp, "thbreak"); | |
12317 | else if (tp->type == bp_hardware_breakpoint) | |
12318 | fprintf_unfiltered (fp, "hbreak"); | |
12319 | else if (tp->type == bp_watchpoint) | |
12320 | fprintf_unfiltered (fp, "watch"); | |
12321 | else if (tp->type == bp_hardware_watchpoint) | |
12322 | fprintf_unfiltered (fp, "watch"); | |
12323 | else if (tp->type == bp_read_watchpoint) | |
12324 | fprintf_unfiltered (fp, "rwatch"); | |
12325 | else if (tp->type == bp_access_watchpoint) | |
12326 | fprintf_unfiltered (fp, "awatch"); | |
12327 | else | |
12328 | internal_error (__FILE__, __LINE__, | |
12329 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12330 | ||
12331 | if (tp->exp_string) | |
12332 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
12333 | else if (tp->addr_string) | |
12334 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
12335 | else | |
12336 | { | |
12337 | char tmp[40]; | |
12338 | ||
12339 | sprintf_vma (tmp, tp->loc->address); | |
12340 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
12341 | } | |
1042e4c0 SS |
12342 | } |
12343 | ||
6149aea9 PA |
12344 | if (tp->thread != -1) |
12345 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
12346 | ||
12347 | if (tp->task != 0) | |
12348 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
12349 | |
12350 | fprintf_unfiltered (fp, "\n"); | |
12351 | ||
6149aea9 PA |
12352 | /* Note, we can't rely on tp->number for anything, as we can't |
12353 | assume the recreated breakpoint numbers will match. Use $bpnum | |
12354 | instead. */ | |
12355 | ||
12356 | if (tp->cond_string) | |
12357 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
12358 | ||
12359 | if (tp->ignore_count) | |
12360 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
12361 | ||
1042e4c0 | 12362 | if (tp->pass_count) |
a7bdde9e | 12363 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 12364 | |
a7bdde9e | 12365 | if (tp->commands) |
1042e4c0 | 12366 | { |
a7bdde9e VP |
12367 | volatile struct gdb_exception ex; |
12368 | ||
6149aea9 | 12369 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
12370 | |
12371 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 12372 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 12373 | { |
9add0f1b | 12374 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
12375 | } |
12376 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 12377 | |
a7bdde9e VP |
12378 | if (ex.reason < 0) |
12379 | throw_exception (ex); | |
1042e4c0 | 12380 | |
a7bdde9e | 12381 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 12382 | } |
6149aea9 PA |
12383 | |
12384 | if (tp->enable_state == bp_disabled) | |
12385 | fprintf_unfiltered (fp, "disable\n"); | |
12386 | ||
12387 | /* If this is a multi-location breakpoint, check if the locations | |
12388 | should be individually disabled. Watchpoint locations are | |
12389 | special, and not user visible. */ | |
12390 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
12391 | { | |
12392 | struct bp_location *loc; | |
12393 | int n = 1; | |
12394 | ||
12395 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
12396 | if (!loc->enabled) | |
12397 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
12398 | } | |
1042e4c0 | 12399 | } |
8bf6485c | 12400 | |
6149aea9 | 12401 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
12402 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
12403 | ||
1042e4c0 SS |
12404 | do_cleanups (cleanup); |
12405 | if (from_tty) | |
6149aea9 PA |
12406 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
12407 | } | |
12408 | ||
12409 | /* The `save breakpoints' command. */ | |
12410 | ||
12411 | static void | |
12412 | save_breakpoints_command (char *args, int from_tty) | |
12413 | { | |
12414 | save_breakpoints (args, from_tty, NULL); | |
12415 | } | |
12416 | ||
12417 | /* The `save tracepoints' command. */ | |
12418 | ||
12419 | static void | |
12420 | save_tracepoints_command (char *args, int from_tty) | |
12421 | { | |
12422 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
12423 | } |
12424 | ||
12425 | /* Create a vector of all tracepoints. */ | |
12426 | ||
12427 | VEC(breakpoint_p) * | |
eeae04df | 12428 | all_tracepoints (void) |
1042e4c0 SS |
12429 | { |
12430 | VEC(breakpoint_p) *tp_vec = 0; | |
12431 | struct breakpoint *tp; | |
12432 | ||
12433 | ALL_TRACEPOINTS (tp) | |
12434 | { | |
12435 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
12436 | } | |
12437 | ||
12438 | return tp_vec; | |
12439 | } | |
12440 | ||
c906108c | 12441 | \f |
4a64f543 MS |
12442 | /* This help string is used for the break, hbreak, tbreak and thbreak |
12443 | commands. It is defined as a macro to prevent duplication. | |
12444 | COMMAND should be a string constant containing the name of the | |
12445 | command. */ | |
31e2b00f AS |
12446 | #define BREAK_ARGS_HELP(command) \ |
12447 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
12448 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
12449 | If a line number is specified, break at start of code for that line.\n\ | |
12450 | If a function is specified, break at start of code for that function.\n\ | |
12451 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
12452 | With no LOCATION, uses current execution address of the selected\n\ |
12453 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
12454 | \n\ |
12455 | THREADNUM is the number from \"info threads\".\n\ | |
12456 | CONDITION is a boolean expression.\n\ | |
12457 | \n\ | |
d41c0fc8 PA |
12458 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
12459 | conditions are different.\n\ | |
31e2b00f AS |
12460 | \n\ |
12461 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
12462 | ||
44feb3ce TT |
12463 | /* List of subcommands for "catch". */ |
12464 | static struct cmd_list_element *catch_cmdlist; | |
12465 | ||
12466 | /* List of subcommands for "tcatch". */ | |
12467 | static struct cmd_list_element *tcatch_cmdlist; | |
12468 | ||
12469 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
12470 | lists, and pass some additional user data to the command function. */ | |
12471 | static void | |
12472 | add_catch_command (char *name, char *docstring, | |
12473 | void (*sfunc) (char *args, int from_tty, | |
12474 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
12475 | char **(*completer) (struct cmd_list_element *cmd, |
12476 | char *text, char *word), | |
44feb3ce TT |
12477 | void *user_data_catch, |
12478 | void *user_data_tcatch) | |
12479 | { | |
12480 | struct cmd_list_element *command; | |
12481 | ||
12482 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12483 | &catch_cmdlist); | |
12484 | set_cmd_sfunc (command, sfunc); | |
12485 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 12486 | set_cmd_completer (command, completer); |
44feb3ce TT |
12487 | |
12488 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12489 | &tcatch_cmdlist); | |
12490 | set_cmd_sfunc (command, sfunc); | |
12491 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 12492 | set_cmd_completer (command, completer); |
44feb3ce TT |
12493 | } |
12494 | ||
6c95b8df | 12495 | static void |
a79b8f6e | 12496 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 12497 | { |
6c95b8df PA |
12498 | inf->total_syscalls_count = 0; |
12499 | inf->any_syscall_count = 0; | |
12500 | VEC_free (int, inf->syscalls_counts); | |
12501 | } | |
12502 | ||
6149aea9 PA |
12503 | static void |
12504 | save_command (char *arg, int from_tty) | |
12505 | { | |
3e43a32a MS |
12506 | printf_unfiltered (_("\"save\" must be followed by " |
12507 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
12508 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
12509 | } | |
12510 | ||
84f4c1fe PM |
12511 | struct breakpoint * |
12512 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
12513 | void *data) | |
12514 | { | |
35df4500 | 12515 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 12516 | |
35df4500 | 12517 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
12518 | { |
12519 | if ((*callback) (b, data)) | |
12520 | return b; | |
12521 | } | |
12522 | ||
12523 | return NULL; | |
12524 | } | |
12525 | ||
c906108c | 12526 | void |
fba45db2 | 12527 | _initialize_breakpoint (void) |
c906108c SS |
12528 | { |
12529 | struct cmd_list_element *c; | |
12530 | ||
84acb35a | 12531 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 12532 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 12533 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 12534 | |
17450429 PP |
12535 | breakpoint_objfile_key = register_objfile_data (); |
12536 | ||
c906108c SS |
12537 | breakpoint_chain = 0; |
12538 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
12539 | before a breakpoint is set. */ | |
12540 | breakpoint_count = 0; | |
12541 | ||
1042e4c0 SS |
12542 | tracepoint_count = 0; |
12543 | ||
1bedd215 AC |
12544 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
12545 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
12546 | Usage is `ignore N COUNT'.")); | |
c906108c | 12547 | if (xdb_commands) |
c5aa993b | 12548 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 12549 | |
1bedd215 AC |
12550 | add_com ("commands", class_breakpoint, commands_command, _("\ |
12551 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
12552 | Give breakpoint number as argument after \"commands\".\n\ |
12553 | With no argument, the targeted breakpoint is the last one set.\n\ | |
12554 | The commands themselves follow starting on the next line.\n\ | |
12555 | Type a line containing \"end\" to indicate the end of them.\n\ | |
12556 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 12557 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 12558 | |
1bedd215 AC |
12559 | add_com ("condition", class_breakpoint, condition_command, _("\ |
12560 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 12561 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 12562 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 12563 | |
1bedd215 | 12564 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 12565 | Set a temporary breakpoint.\n\ |
c906108c SS |
12566 | Like \"break\" except the breakpoint is only temporary,\n\ |
12567 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
12568 | by using \"enable delete\" on the breakpoint number.\n\ |
12569 | \n" | |
12570 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 12571 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12572 | |
1bedd215 | 12573 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 12574 | Set a hardware assisted breakpoint.\n\ |
c906108c | 12575 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
12576 | some target hardware may not have this support.\n\ |
12577 | \n" | |
12578 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 12579 | set_cmd_completer (c, location_completer); |
c906108c | 12580 | |
1bedd215 | 12581 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 12582 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 12583 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
12584 | so it will be deleted when hit.\n\ |
12585 | \n" | |
12586 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 12587 | set_cmd_completer (c, location_completer); |
c906108c | 12588 | |
1bedd215 AC |
12589 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
12590 | Enable some breakpoints.\n\ | |
c906108c SS |
12591 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12592 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12593 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12594 | With a subcommand you can enable temporarily."), |
c906108c SS |
12595 | &enablelist, "enable ", 1, &cmdlist); |
12596 | if (xdb_commands) | |
1bedd215 AC |
12597 | add_com ("ab", class_breakpoint, enable_command, _("\ |
12598 | Enable some breakpoints.\n\ | |
c906108c SS |
12599 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12600 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12601 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12602 | With a subcommand you can enable temporarily.")); |
c906108c SS |
12603 | |
12604 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
12605 | ||
84951ab5 | 12606 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 12607 | Enable some breakpoints.\n\ |
c906108c SS |
12608 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12609 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12610 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 12611 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 12612 | |
1a966eab AC |
12613 | add_cmd ("once", no_class, enable_once_command, _("\ |
12614 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12615 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12616 | &enablebreaklist); |
12617 | ||
1a966eab AC |
12618 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12619 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12620 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12621 | &enablebreaklist); |
12622 | ||
1a966eab AC |
12623 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12624 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12625 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12626 | &enablelist); |
12627 | ||
1a966eab AC |
12628 | add_cmd ("once", no_class, enable_once_command, _("\ |
12629 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12630 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12631 | &enablelist); |
12632 | ||
1bedd215 AC |
12633 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
12634 | Disable some breakpoints.\n\ | |
c906108c SS |
12635 | Arguments are breakpoint numbers with spaces in between.\n\ |
12636 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12637 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
12638 | &disablelist, "disable ", 1, &cmdlist); |
12639 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
12640 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
12641 | if (xdb_commands) | |
1bedd215 AC |
12642 | add_com ("sb", class_breakpoint, disable_command, _("\ |
12643 | Disable some breakpoints.\n\ | |
c906108c SS |
12644 | Arguments are breakpoint numbers with spaces in between.\n\ |
12645 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12646 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 12647 | |
1a966eab AC |
12648 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
12649 | Disable some breakpoints.\n\ | |
c906108c SS |
12650 | Arguments are breakpoint numbers with spaces in between.\n\ |
12651 | To disable all breakpoints, give no argument.\n\ | |
12652 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 12653 | This command may be abbreviated \"disable\"."), |
c906108c SS |
12654 | &disablelist); |
12655 | ||
1bedd215 AC |
12656 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
12657 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12658 | Arguments are breakpoint numbers with spaces in between.\n\ |
12659 | To delete all breakpoints, give no argument.\n\ | |
12660 | \n\ | |
12661 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 12662 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
12663 | &deletelist, "delete ", 1, &cmdlist); |
12664 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 12665 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 12666 | if (xdb_commands) |
1bedd215 AC |
12667 | add_com ("db", class_breakpoint, delete_command, _("\ |
12668 | Delete some breakpoints.\n\ | |
c906108c | 12669 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 12670 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12671 | |
1a966eab AC |
12672 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12673 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12674 | Arguments are breakpoint numbers with spaces in between.\n\ |
12675 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12676 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12677 | &deletelist); |
12678 | ||
1bedd215 AC |
12679 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12680 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12681 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12682 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12683 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12684 | If an address is specified, breakpoints at that address are cleared.\n\ |
12685 | \n\ | |
12686 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12687 | is executing in.\n\ |
12688 | \n\ | |
1bedd215 | 12689 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12690 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12691 | |
1bedd215 | 12692 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12693 | Set breakpoint at specified line or function.\n" |
12694 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12695 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12696 | |
c906108c SS |
12697 | add_com_alias ("b", "break", class_run, 1); |
12698 | add_com_alias ("br", "break", class_run, 1); | |
12699 | add_com_alias ("bre", "break", class_run, 1); | |
12700 | add_com_alias ("brea", "break", class_run, 1); | |
12701 | ||
7681d515 PM |
12702 | if (xdb_commands) |
12703 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12704 | |
12705 | if (dbx_commands) | |
12706 | { | |
1bedd215 AC |
12707 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12708 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12709 | &stoplist, "stop ", 1, &cmdlist); |
12710 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12711 | _("Break in function or address."), &stoplist); |
c5aa993b | 12712 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12713 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12714 | add_com ("status", class_info, breakpoints_info, _("\ |
12715 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12716 | The \"Type\" column indicates one of:\n\ |
12717 | \tbreakpoint - normal breakpoint\n\ | |
12718 | \twatchpoint - watchpoint\n\ | |
12719 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12720 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12721 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12722 | address and file/line number respectively.\n\ |
12723 | \n\ | |
12724 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12725 | are set to the address of the last breakpoint listed unless the command\n\ |
12726 | is prefixed with \"server \".\n\n\ | |
c906108c | 12727 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12728 | breakpoint set.")); |
c906108c SS |
12729 | } |
12730 | ||
1bedd215 | 12731 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 12732 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
12733 | The \"Type\" column indicates one of:\n\ |
12734 | \tbreakpoint - normal breakpoint\n\ | |
12735 | \twatchpoint - watchpoint\n\ | |
12736 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12737 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12738 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12739 | address and file/line number respectively.\n\ |
12740 | \n\ | |
12741 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12742 | are set to the address of the last breakpoint listed unless the command\n\ |
12743 | is prefixed with \"server \".\n\n\ | |
c906108c | 12744 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12745 | breakpoint set.")); |
c906108c | 12746 | |
6b04bdb7 MS |
12747 | add_info_alias ("b", "breakpoints", 1); |
12748 | ||
c906108c | 12749 | if (xdb_commands) |
1bedd215 AC |
12750 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12751 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12752 | The \"Type\" column indicates one of:\n\ |
12753 | \tbreakpoint - normal breakpoint\n\ | |
12754 | \twatchpoint - watchpoint\n\ | |
12755 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12756 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12757 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12758 | address and file/line number respectively.\n\ |
12759 | \n\ | |
12760 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12761 | are set to the address of the last breakpoint listed unless the command\n\ |
12762 | is prefixed with \"server \".\n\n\ | |
c906108c | 12763 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12764 | breakpoint set.")); |
c906108c | 12765 | |
1a966eab AC |
12766 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12767 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12768 | The \"Type\" column indicates one of:\n\ |
12769 | \tbreakpoint - normal breakpoint\n\ | |
12770 | \twatchpoint - watchpoint\n\ | |
12771 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12772 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12773 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12774 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12775 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12776 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12777 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12778 | address and file/line number respectively.\n\ |
12779 | \n\ | |
12780 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12781 | are set to the address of the last breakpoint listed unless the command\n\ |
12782 | is prefixed with \"server \".\n\n\ | |
c906108c | 12783 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12784 | breakpoint set."), |
c906108c SS |
12785 | &maintenanceinfolist); |
12786 | ||
44feb3ce TT |
12787 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12788 | Set catchpoints to catch events."), | |
12789 | &catch_cmdlist, "catch ", | |
12790 | 0/*allow-unknown*/, &cmdlist); | |
12791 | ||
12792 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12793 | Set temporary catchpoints to catch events."), | |
12794 | &tcatch_cmdlist, "tcatch ", | |
12795 | 0/*allow-unknown*/, &cmdlist); | |
12796 | ||
12797 | /* Add catch and tcatch sub-commands. */ | |
12798 | add_catch_command ("catch", _("\ | |
12799 | Catch an exception, when caught.\n\ | |
12800 | With an argument, catch only exceptions with the given name."), | |
12801 | catch_catch_command, | |
a96d9b2e | 12802 | NULL, |
44feb3ce TT |
12803 | CATCH_PERMANENT, |
12804 | CATCH_TEMPORARY); | |
12805 | add_catch_command ("throw", _("\ | |
12806 | Catch an exception, when thrown.\n\ | |
12807 | With an argument, catch only exceptions with the given name."), | |
12808 | catch_throw_command, | |
a96d9b2e | 12809 | NULL, |
44feb3ce TT |
12810 | CATCH_PERMANENT, |
12811 | CATCH_TEMPORARY); | |
12812 | add_catch_command ("fork", _("Catch calls to fork."), | |
12813 | catch_fork_command_1, | |
a96d9b2e | 12814 | NULL, |
44feb3ce TT |
12815 | (void *) (uintptr_t) catch_fork_permanent, |
12816 | (void *) (uintptr_t) catch_fork_temporary); | |
12817 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12818 | catch_fork_command_1, | |
a96d9b2e | 12819 | NULL, |
44feb3ce TT |
12820 | (void *) (uintptr_t) catch_vfork_permanent, |
12821 | (void *) (uintptr_t) catch_vfork_temporary); | |
12822 | add_catch_command ("exec", _("Catch calls to exec."), | |
12823 | catch_exec_command_1, | |
a96d9b2e SDJ |
12824 | NULL, |
12825 | CATCH_PERMANENT, | |
12826 | CATCH_TEMPORARY); | |
12827 | add_catch_command ("syscall", _("\ | |
12828 | Catch system calls by their names and/or numbers.\n\ | |
12829 | Arguments say which system calls to catch. If no arguments\n\ | |
12830 | are given, every system call will be caught.\n\ | |
12831 | Arguments, if given, should be one or more system call names\n\ | |
12832 | (if your system supports that), or system call numbers."), | |
12833 | catch_syscall_command_1, | |
12834 | catch_syscall_completer, | |
44feb3ce TT |
12835 | CATCH_PERMANENT, |
12836 | CATCH_TEMPORARY); | |
44feb3ce TT |
12837 | add_catch_command ("exception", _("\ |
12838 | Catch Ada exceptions, when raised.\n\ | |
12839 | With an argument, catch only exceptions with the given name."), | |
12840 | catch_ada_exception_command, | |
a96d9b2e | 12841 | NULL, |
44feb3ce TT |
12842 | CATCH_PERMANENT, |
12843 | CATCH_TEMPORARY); | |
12844 | add_catch_command ("assert", _("\ | |
12845 | Catch failed Ada assertions, when raised.\n\ | |
12846 | With an argument, catch only exceptions with the given name."), | |
12847 | catch_assert_command, | |
a96d9b2e | 12848 | NULL, |
44feb3ce TT |
12849 | CATCH_PERMANENT, |
12850 | CATCH_TEMPORARY); | |
c5aa993b | 12851 | |
1bedd215 AC |
12852 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12853 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12854 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12855 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12856 | an expression changes.\n\ |
12857 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12858 | the memory to which it refers.")); | |
65d12d83 | 12859 | set_cmd_completer (c, expression_completer); |
c906108c | 12860 | |
1bedd215 AC |
12861 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12862 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12863 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12864 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12865 | an expression is read.\n\ |
12866 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12867 | the memory to which it refers.")); | |
65d12d83 | 12868 | set_cmd_completer (c, expression_completer); |
c906108c | 12869 | |
1bedd215 AC |
12870 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12871 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12872 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12873 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12874 | an expression is either read or written.\n\ |
12875 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12876 | the memory to which it refers.")); | |
65d12d83 | 12877 | set_cmd_completer (c, expression_completer); |
c906108c | 12878 | |
d77f58be | 12879 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 12880 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 12881 | |
920d2a44 AC |
12882 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12883 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12884 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12885 | &can_use_hw_watchpoints, _("\ | |
12886 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12887 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12888 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12889 | such is available. (However, any hardware watchpoints that were\n\ | |
12890 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12891 | hardware.)"), |
12892 | NULL, | |
920d2a44 | 12893 | show_can_use_hw_watchpoints, |
85c07804 | 12894 | &setlist, &showlist); |
c906108c SS |
12895 | |
12896 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12897 | |
1042e4c0 SS |
12898 | /* Tracepoint manipulation commands. */ |
12899 | ||
12900 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12901 | Set a tracepoint at specified line or function.\n\ | |
12902 | \n" | |
12903 | BREAK_ARGS_HELP ("trace") "\n\ | |
12904 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12905 | set_cmd_completer (c, location_completer); | |
12906 | ||
12907 | add_com_alias ("tp", "trace", class_alias, 0); | |
12908 | add_com_alias ("tr", "trace", class_alias, 1); | |
12909 | add_com_alias ("tra", "trace", class_alias, 1); | |
12910 | add_com_alias ("trac", "trace", class_alias, 1); | |
12911 | ||
7a697b8d SS |
12912 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12913 | Set a fast tracepoint at specified line or function.\n\ | |
12914 | \n" | |
12915 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12916 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12917 | set_cmd_completer (c, location_completer); | |
12918 | ||
0fb4aa4b PA |
12919 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12920 | Set a static tracepoint at specified line, function or marker.\n\ | |
12921 | \n\ | |
12922 | strace [LOCATION] [if CONDITION]\n\ | |
12923 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12924 | or -m MARKER_ID.\n\ | |
12925 | If a line number is specified, probe the marker at start of code\n\ | |
12926 | for that line. If a function is specified, probe the marker at start\n\ | |
12927 | of code for that function. If an address is specified, probe the marker\n\ | |
12928 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12929 | with that name. With no LOCATION, uses current execution address of\n\ | |
12930 | the selected stack frame.\n\ | |
12931 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12932 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12933 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12934 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12935 | \n\ | |
12936 | CONDITION is a boolean expression.\n\ | |
12937 | \n\ | |
d41c0fc8 PA |
12938 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12939 | conditions are different.\n\ | |
0fb4aa4b PA |
12940 | \n\ |
12941 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12942 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12943 | set_cmd_completer (c, location_completer); | |
12944 | ||
1042e4c0 | 12945 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 12946 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
12947 | Convenience variable \"$tpnum\" contains the number of the\n\ |
12948 | last tracepoint set.")); | |
12949 | ||
12950 | add_info_alias ("tp", "tracepoints", 1); | |
12951 | ||
12952 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12953 | Delete specified tracepoints.\n\ | |
12954 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12955 | No argument means delete all tracepoints."), | |
12956 | &deletelist); | |
12957 | ||
12958 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12959 | Disable specified tracepoints.\n\ | |
12960 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12961 | No argument means disable all tracepoints."), | |
12962 | &disablelist); | |
12963 | deprecate_cmd (c, "disable"); | |
12964 | ||
12965 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12966 | Enable specified tracepoints.\n\ | |
12967 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12968 | No argument means enable all tracepoints."), | |
12969 | &enablelist); | |
12970 | deprecate_cmd (c, "enable"); | |
12971 | ||
12972 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12973 | Set the passcount for a tracepoint.\n\ | |
12974 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12975 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12976 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12977 | ||
6149aea9 PA |
12978 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12979 | _("Save breakpoint definitions as a script."), | |
12980 | &save_cmdlist, "save ", | |
12981 | 0/*allow-unknown*/, &cmdlist); | |
12982 | ||
12983 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12984 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12985 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12986 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12987 | session to restore them."), | |
12988 | &save_cmdlist); | |
12989 | set_cmd_completer (c, filename_completer); | |
12990 | ||
12991 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12992 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12993 | Use the 'source' command in another debug session to restore them."), |
12994 | &save_cmdlist); | |
1042e4c0 SS |
12995 | set_cmd_completer (c, filename_completer); |
12996 | ||
6149aea9 PA |
12997 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12998 | deprecate_cmd (c, "save tracepoints"); | |
12999 | ||
1bedd215 | 13000 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13001 | Breakpoint specific settings\n\ |
13002 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13003 | pending breakpoint behavior"), |
fa8d40ab JJ |
13004 | &breakpoint_set_cmdlist, "set breakpoint ", |
13005 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 13006 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13007 | Breakpoint specific settings\n\ |
13008 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13009 | pending breakpoint behavior"), |
fa8d40ab JJ |
13010 | &breakpoint_show_cmdlist, "show breakpoint ", |
13011 | 0/*allow-unknown*/, &showlist); | |
13012 | ||
7915a72c AC |
13013 | add_setshow_auto_boolean_cmd ("pending", no_class, |
13014 | &pending_break_support, _("\ | |
13015 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
13016 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
13017 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
13018 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
13019 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 13020 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 13021 | NULL, |
920d2a44 | 13022 | show_pending_break_support, |
6e1d7d6c AC |
13023 | &breakpoint_set_cmdlist, |
13024 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
13025 | |
13026 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
13027 | |
13028 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
13029 | &automatic_hardware_breakpoints, _("\ | |
13030 | Set automatic usage of hardware breakpoints."), _("\ | |
13031 | Show automatic usage of hardware breakpoints."), _("\ | |
13032 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
13033 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
13034 | a warning will be emitted for such breakpoints."), | |
13035 | NULL, | |
13036 | show_automatic_hardware_breakpoints, | |
13037 | &breakpoint_set_cmdlist, | |
13038 | &breakpoint_show_cmdlist); | |
74960c60 | 13039 | |
33e5cbd6 PA |
13040 | add_setshow_enum_cmd ("always-inserted", class_support, |
13041 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
13042 | Set mode for inserting breakpoints."), _("\ |
13043 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
13044 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
13045 | resumed, and removed when execution stops. When this mode is on,\n\ | |
13046 | breakpoints are inserted immediately and removed only when the user\n\ | |
13047 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
13048 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
13049 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
13050 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
13051 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
13052 | NULL, |
13053 | &show_always_inserted_mode, | |
13054 | &breakpoint_set_cmdlist, | |
13055 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
13056 | |
13057 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
13058 | Set a breakpoint for an address range.\n\ | |
13059 | break-range START-LOCATION, END-LOCATION\n\ | |
13060 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
13061 | LINENUM, for that line in the current file,\n\ | |
13062 | FILE:LINENUM, for that line in that file,\n\ | |
13063 | +OFFSET, for that number of lines after the current line\n\ | |
13064 | or the start of the range\n\ | |
13065 | FUNCTION, for the first line in that function,\n\ | |
13066 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
13067 | *ADDRESS, for the instruction at that address.\n\ | |
13068 | \n\ | |
13069 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
13070 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
13071 | range (including START-LOCATION and END-LOCATION).")); | |
13072 | ||
765dc015 | 13073 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
13074 | |
13075 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 13076 | } |