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 | |
e09342b5 | 104 | static int can_use_hardware_watchpoint (struct value *, int); |
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 (); | |
629 | observer_notify_breakpoint_modified (b->number); | |
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 VP |
793 | breakpoints_changed (); |
794 | observer_notify_breakpoint_modified (b->number); | |
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) | |
808 | observer_notify_breakpoint_modified (b->number); | |
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) | |
821 | observer_notify_breakpoint_modified (b->number); | |
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) | |
834 | observer_notify_breakpoint_modified (b->number); | |
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 (); | |
911 | observer_notify_breakpoint_modified (b->number); | |
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. */ | |
1407 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1408 | && reparse) | |
1409 | { | |
e09342b5 | 1410 | int reg_cnt; |
9fa40276 TJB |
1411 | enum bp_loc_type loc_type; |
1412 | struct bp_location *bl; | |
a5606eee | 1413 | |
e09342b5 TJB |
1414 | reg_cnt = can_use_hardware_watchpoint (val_chain, b->exact); |
1415 | ||
1416 | if (reg_cnt) | |
9fa40276 TJB |
1417 | { |
1418 | int i, target_resources_ok, other_type_used; | |
e09342b5 | 1419 | enum enable_state orig_enable_state; |
9fa40276 TJB |
1420 | |
1421 | /* We need to determine how many resources are already | |
e09342b5 TJB |
1422 | used for all other hardware watchpoints plus this one |
1423 | to see if we still have enough resources to also fit | |
1424 | this watchpoint in as well. To guarantee the | |
1425 | hw_watchpoint_used_count call below counts this | |
1426 | watchpoint, make sure that it is marked as a hardware | |
1427 | watchpoint. */ | |
1428 | b->type = bp_hardware_watchpoint; | |
1429 | ||
1430 | /* hw_watchpoint_used_count ignores disabled watchpoints, | |
1431 | and b might be disabled if we're being called from | |
1432 | do_enable_breakpoint. */ | |
1433 | orig_enable_state = b->enable_state; | |
1434 | b->enable_state = bp_enabled; | |
1435 | ||
9fa40276 TJB |
1436 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1437 | &other_type_used); | |
9fa40276 | 1438 | |
e09342b5 TJB |
1439 | b->enable_state = orig_enable_state; |
1440 | ||
1441 | target_resources_ok = target_can_use_hardware_watchpoint | |
1442 | (bp_hardware_watchpoint, i, other_type_used); | |
1443 | if (target_resources_ok <= 0) | |
1444 | b->type = bp_watchpoint; | |
9fa40276 TJB |
1445 | } |
1446 | else | |
1447 | b->type = bp_watchpoint; | |
1448 | ||
1449 | loc_type = (b->type == bp_watchpoint? bp_loc_other | |
1450 | : bp_loc_hardware_watchpoint); | |
1451 | for (bl = b->loc; bl; bl = bl->next) | |
1452 | bl->loc_type = loc_type; | |
1453 | } | |
1454 | ||
1455 | for (v = val_chain; v; v = next) | |
1456 | { | |
a5606eee VP |
1457 | next = value_next (v); |
1458 | if (v != b->val) | |
1459 | value_free (v); | |
1460 | } | |
1461 | ||
c7437ca6 PA |
1462 | /* If a software watchpoint is not watching any memory, then the |
1463 | above left it without any location set up. But, | |
1464 | bpstat_stop_status requires a location to be able to report | |
1465 | stops, so make sure there's at least a dummy one. */ | |
1466 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1467 | { | |
1468 | b->loc = allocate_bp_location (b); | |
1469 | b->loc->pspace = frame_pspace; | |
1470 | b->loc->address = -1; | |
1471 | b->loc->length = -1; | |
1472 | b->loc->watchpoint_type = -1; | |
1473 | } | |
a5606eee VP |
1474 | } |
1475 | else if (!within_current_scope) | |
7270d8f2 | 1476 | { |
ac74f770 MS |
1477 | printf_filtered (_("\ |
1478 | Watchpoint %d deleted because the program has left the block\n\ | |
1479 | in which its expression is valid.\n"), | |
a5606eee | 1480 | b->number); |
d0fb5eae | 1481 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1482 | } |
a5606eee VP |
1483 | |
1484 | /* Restore the selected frame. */ | |
66076460 DJ |
1485 | if (frame_saved) |
1486 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1487 | } |
1488 | ||
a5606eee | 1489 | |
74960c60 VP |
1490 | /* Returns 1 iff breakpoint location should be |
1491 | inserted in the inferior. */ | |
1492 | static int | |
35df4500 | 1493 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1494 | { |
35df4500 | 1495 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1496 | return 0; |
1497 | ||
35df4500 | 1498 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1499 | return 0; |
1500 | ||
35df4500 | 1501 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1502 | return 0; |
1503 | ||
56710373 PA |
1504 | /* This is set for example, when we're attached to the parent of a |
1505 | vfork, and have detached from the child. The child is running | |
1506 | free, and we expect it to do an exec or exit, at which point the | |
1507 | OS makes the parent schedulable again (and the target reports | |
1508 | that the vfork is done). Until the child is done with the shared | |
1509 | memory region, do not insert breakpoints in the parent, otherwise | |
1510 | the child could still trip on the parent's breakpoints. Since | |
1511 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1512 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1513 | return 0; |
1514 | ||
1042e4c0 SS |
1515 | /* Tracepoints are inserted by the target at a time of its choosing, |
1516 | not by us. */ | |
35df4500 | 1517 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1518 | return 0; |
1519 | ||
74960c60 VP |
1520 | return 1; |
1521 | } | |
1522 | ||
35df4500 TJB |
1523 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1524 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1525 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1526 | |
4a64f543 MS |
1527 | NOTE drow/2003-09-09: This routine could be broken down to an |
1528 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1529 | static int |
35df4500 | 1530 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1531 | struct ui_file *tmp_error_stream, |
fa3a767f | 1532 | int *disabled_breaks, |
26bb91f3 | 1533 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1534 | { |
1535 | int val = 0; | |
1536 | ||
35df4500 | 1537 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1538 | return 0; |
1539 | ||
8181d85f | 1540 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1541 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1542 | bl->target_info.placed_address = bl->address; | |
1543 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1544 | bl->target_info.length = bl->length; |
8181d85f | 1545 | |
35df4500 TJB |
1546 | if (bl->loc_type == bp_loc_software_breakpoint |
1547 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1548 | { |
35df4500 | 1549 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1550 | { |
1551 | /* If the explicitly specified breakpoint type | |
1552 | is not hardware breakpoint, check the memory map to see | |
1553 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1554 | |
765dc015 VP |
1555 | Two important cases are: |
1556 | - location type is not hardware breakpoint, memory | |
1557 | is readonly. We change the type of the location to | |
1558 | hardware breakpoint. | |
4a64f543 MS |
1559 | - location type is hardware breakpoint, memory is |
1560 | read-write. This means we've previously made the | |
1561 | location hardware one, but then the memory map changed, | |
1562 | so we undo. | |
765dc015 | 1563 | |
4a64f543 MS |
1564 | When breakpoints are removed, remove_breakpoints will use |
1565 | location types we've just set here, the only possible | |
1566 | problem is that memory map has changed during running | |
1567 | program, but it's not going to work anyway with current | |
1568 | gdb. */ | |
765dc015 | 1569 | struct mem_region *mr |
35df4500 | 1570 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1571 | |
1572 | if (mr) | |
1573 | { | |
1574 | if (automatic_hardware_breakpoints) | |
1575 | { | |
765dc015 VP |
1576 | enum bp_loc_type new_type; |
1577 | ||
1578 | if (mr->attrib.mode != MEM_RW) | |
1579 | new_type = bp_loc_hardware_breakpoint; | |
1580 | else | |
1581 | new_type = bp_loc_software_breakpoint; | |
1582 | ||
35df4500 | 1583 | if (new_type != bl->loc_type) |
765dc015 VP |
1584 | { |
1585 | static int said = 0; | |
cc59ec59 | 1586 | |
35df4500 | 1587 | bl->loc_type = new_type; |
765dc015 VP |
1588 | if (!said) |
1589 | { | |
3e43a32a MS |
1590 | fprintf_filtered (gdb_stdout, |
1591 | _("Note: automatically using " | |
1592 | "hardware breakpoints for " | |
1593 | "read-only addresses.\n")); | |
765dc015 VP |
1594 | said = 1; |
1595 | } | |
1596 | } | |
1597 | } | |
35df4500 | 1598 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1599 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1600 | warning (_("cannot set software breakpoint " |
1601 | "at readonly address %s"), | |
35df4500 | 1602 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1603 | } |
1604 | } | |
1605 | ||
879bfdc2 DJ |
1606 | /* First check to see if we have to handle an overlay. */ |
1607 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1608 | || bl->section == NULL |
1609 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1610 | { |
1611 | /* No overlay handling: just set the breakpoint. */ | |
1612 | ||
35df4500 TJB |
1613 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1614 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1615 | &bl->target_info); | |
879bfdc2 | 1616 | else |
35df4500 TJB |
1617 | val = target_insert_breakpoint (bl->gdbarch, |
1618 | &bl->target_info); | |
879bfdc2 DJ |
1619 | } |
1620 | else | |
1621 | { | |
4a64f543 | 1622 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1623 | Shall we set a breakpoint at the LMA? */ |
1624 | if (!overlay_events_enabled) | |
1625 | { | |
1626 | /* Yes -- overlay event support is not active, | |
1627 | so we must try to set a breakpoint at the LMA. | |
1628 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1629 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1630 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1631 | bl->owner->number); |
879bfdc2 DJ |
1632 | else |
1633 | { | |
35df4500 TJB |
1634 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1635 | bl->section); | |
879bfdc2 | 1636 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1637 | bl->overlay_target_info = bl->target_info; |
1638 | bl->overlay_target_info.placed_address = addr; | |
1639 | val = target_insert_breakpoint (bl->gdbarch, | |
1640 | &bl->overlay_target_info); | |
879bfdc2 | 1641 | if (val != 0) |
99361f52 | 1642 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1643 | "Overlay breakpoint %d " |
1644 | "failed: in ROM?\n", | |
35df4500 | 1645 | bl->owner->number); |
879bfdc2 DJ |
1646 | } |
1647 | } | |
1648 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1649 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1650 | { |
1651 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1652 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1653 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1654 | &bl->target_info); | |
879bfdc2 | 1655 | else |
35df4500 TJB |
1656 | val = target_insert_breakpoint (bl->gdbarch, |
1657 | &bl->target_info); | |
879bfdc2 DJ |
1658 | } |
1659 | else | |
1660 | { | |
1661 | /* No. This breakpoint will not be inserted. | |
1662 | No error, but do not mark the bp as 'inserted'. */ | |
1663 | return 0; | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | if (val) | |
1668 | { | |
1669 | /* Can't set the breakpoint. */ | |
35df4500 | 1670 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1671 | { |
4a64f543 | 1672 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1673 | val = 0; |
35df4500 | 1674 | bl->shlib_disabled = 1; |
879bfdc2 DJ |
1675 | if (!*disabled_breaks) |
1676 | { | |
1677 | fprintf_unfiltered (tmp_error_stream, | |
1678 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1679 | bl->owner->number); |
879bfdc2 | 1680 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1681 | "Temporarily disabling shared " |
1682 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1683 | } |
1684 | *disabled_breaks = 1; | |
1685 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1686 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1687 | } |
1688 | else | |
879bfdc2 | 1689 | { |
35df4500 | 1690 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1691 | { |
1692 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1693 | fprintf_unfiltered (tmp_error_stream, |
1694 | "Cannot insert hardware " | |
1695 | "breakpoint %d.\n", | |
35df4500 | 1696 | bl->owner->number); |
879bfdc2 DJ |
1697 | } |
1698 | else | |
1699 | { | |
1700 | fprintf_unfiltered (tmp_error_stream, | |
1701 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1702 | bl->owner->number); |
879bfdc2 DJ |
1703 | fprintf_filtered (tmp_error_stream, |
1704 | "Error accessing memory address "); | |
35df4500 | 1705 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1706 | tmp_error_stream); |
879bfdc2 DJ |
1707 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1708 | safe_strerror (val)); | |
1709 | } | |
1710 | ||
1711 | } | |
1712 | } | |
1713 | else | |
35df4500 | 1714 | bl->inserted = 1; |
879bfdc2 DJ |
1715 | |
1716 | return val; | |
1717 | } | |
1718 | ||
35df4500 | 1719 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1720 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1721 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1722 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1723 | { |
77b06cd7 TJB |
1724 | gdb_assert (bl->owner->ops != NULL |
1725 | && bl->owner->ops->insert_location != NULL); | |
1726 | ||
1727 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1728 | |
1729 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1730 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1731 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1732 | { |
1733 | struct bp_location *loc, **loc_temp; | |
1734 | ||
1735 | /* But don't try to insert it, if there's already another | |
1736 | hw_access location that would be considered a duplicate | |
1737 | of this one. */ | |
1738 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1739 | if (loc != bl |
85d721b8 | 1740 | && loc->watchpoint_type == hw_access |
35df4500 | 1741 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1742 | { |
35df4500 TJB |
1743 | bl->duplicate = 1; |
1744 | bl->inserted = 1; | |
1745 | bl->target_info = loc->target_info; | |
1746 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1747 | val = 0; |
1748 | break; | |
1749 | } | |
1750 | ||
1751 | if (val == 1) | |
1752 | { | |
77b06cd7 TJB |
1753 | bl->watchpoint_type = hw_access; |
1754 | val = bl->owner->ops->insert_location (bl); | |
1755 | ||
1756 | if (val) | |
1757 | /* Back to the original value. */ | |
1758 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1759 | } |
1760 | } | |
1761 | ||
35df4500 | 1762 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1763 | } |
1764 | ||
35df4500 | 1765 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1766 | { |
77b06cd7 TJB |
1767 | gdb_assert (bl->owner->ops != NULL |
1768 | && bl->owner->ops->insert_location != NULL); | |
1769 | ||
1770 | val = bl->owner->ops->insert_location (bl); | |
1771 | if (val) | |
1772 | { | |
1773 | bl->owner->enable_state = bp_disabled; | |
1774 | ||
1775 | if (val == 1) | |
1776 | warning (_("\ | |
1777 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1778 | of catchpoint."), bl->owner->number); | |
1779 | else | |
1780 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1781 | } | |
1782 | ||
1783 | bl->inserted = (val == 0); | |
1640b821 DJ |
1784 | |
1785 | /* We've already printed an error message if there was a problem | |
1786 | inserting this catchpoint, and we've disabled the catchpoint, | |
1787 | so just return success. */ | |
1788 | return 0; | |
879bfdc2 DJ |
1789 | } |
1790 | ||
1791 | return 0; | |
1792 | } | |
1793 | ||
6c95b8df PA |
1794 | /* This function is called when program space PSPACE is about to be |
1795 | deleted. It takes care of updating breakpoints to not reference | |
1796 | PSPACE anymore. */ | |
1797 | ||
1798 | void | |
1799 | breakpoint_program_space_exit (struct program_space *pspace) | |
1800 | { | |
1801 | struct breakpoint *b, *b_temp; | |
876fa593 | 1802 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1803 | |
1804 | /* Remove any breakpoint that was set through this program space. */ | |
1805 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1806 | { | |
1807 | if (b->pspace == pspace) | |
1808 | delete_breakpoint (b); | |
1809 | } | |
1810 | ||
1811 | /* Breakpoints set through other program spaces could have locations | |
1812 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1813 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1814 | { |
1815 | struct bp_location *tmp; | |
1816 | ||
1817 | if (loc->pspace == pspace) | |
1818 | { | |
2bdf28a0 | 1819 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1820 | if (loc->owner->loc == loc) |
1821 | loc->owner->loc = loc->next; | |
1822 | else | |
1823 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1824 | if (tmp->next == loc) | |
1825 | { | |
1826 | tmp->next = loc->next; | |
1827 | break; | |
1828 | } | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | /* Now update the global location list to permanently delete the | |
1833 | removed locations above. */ | |
1834 | update_global_location_list (0); | |
1835 | } | |
1836 | ||
74960c60 VP |
1837 | /* Make sure all breakpoints are inserted in inferior. |
1838 | Throws exception on any error. | |
1839 | A breakpoint that is already inserted won't be inserted | |
1840 | again, so calling this function twice is safe. */ | |
1841 | void | |
1842 | insert_breakpoints (void) | |
1843 | { | |
1844 | struct breakpoint *bpt; | |
1845 | ||
1846 | ALL_BREAKPOINTS (bpt) | |
1847 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1848 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1849 | |
b60e7edf | 1850 | update_global_location_list (1); |
74960c60 | 1851 | |
c35b1492 PA |
1852 | /* update_global_location_list does not insert breakpoints when |
1853 | always_inserted_mode is not enabled. Explicitly insert them | |
1854 | now. */ | |
1855 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1856 | insert_breakpoint_locations (); |
1857 | } | |
1858 | ||
c906108c SS |
1859 | /* insert_breakpoints is used when starting or continuing the program. |
1860 | remove_breakpoints is used when the program stops. | |
1861 | Both return zero if successful, | |
1862 | or an `errno' value if could not write the inferior. */ | |
1863 | ||
74960c60 VP |
1864 | static void |
1865 | insert_breakpoint_locations (void) | |
c906108c | 1866 | { |
a5606eee | 1867 | struct breakpoint *bpt; |
35df4500 | 1868 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1869 | int error = 0; |
c906108c SS |
1870 | int val = 0; |
1871 | int disabled_breaks = 0; | |
81d0cc19 | 1872 | int hw_breakpoint_error = 0; |
c906108c | 1873 | |
81d0cc19 | 1874 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1875 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1876 | |
81d0cc19 GS |
1877 | /* Explicitly mark the warning -- this will only be printed if |
1878 | there was an error. */ | |
1879 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1880 | |
1881 | save_current_space_and_thread (); | |
1882 | ||
35df4500 | 1883 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1884 | { |
35df4500 | 1885 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1886 | continue; |
1887 | ||
4a64f543 MS |
1888 | /* There is no point inserting thread-specific breakpoints if |
1889 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1890 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1891 | if (bl->owner->thread != -1 |
1892 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1893 | continue; |
1894 | ||
35df4500 | 1895 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1896 | |
1897 | /* For targets that support global breakpoints, there's no need | |
1898 | to select an inferior to insert breakpoint to. In fact, even | |
1899 | if we aren't attached to any process yet, we should still | |
1900 | insert breakpoints. */ | |
1901 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1902 | && ptid_equal (inferior_ptid, null_ptid)) | |
1903 | continue; | |
1904 | ||
35df4500 | 1905 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1906 | &hw_breakpoint_error); |
1907 | if (val) | |
e236ba44 | 1908 | error = val; |
879bfdc2 | 1909 | } |
c906108c | 1910 | |
4a64f543 MS |
1911 | /* If we failed to insert all locations of a watchpoint, remove |
1912 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1913 | ALL_BREAKPOINTS (bpt) |
1914 | { | |
1915 | int some_failed = 0; | |
1916 | struct bp_location *loc; | |
1917 | ||
1918 | if (!is_hardware_watchpoint (bpt)) | |
1919 | continue; | |
1920 | ||
d6b74ac4 | 1921 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1922 | continue; |
74960c60 VP |
1923 | |
1924 | if (bpt->disposition == disp_del_at_next_stop) | |
1925 | continue; | |
a5606eee VP |
1926 | |
1927 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1928 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1929 | { |
1930 | some_failed = 1; | |
1931 | break; | |
1932 | } | |
1933 | if (some_failed) | |
1934 | { | |
1935 | for (loc = bpt->loc; loc; loc = loc->next) | |
1936 | if (loc->inserted) | |
1937 | remove_breakpoint (loc, mark_uninserted); | |
1938 | ||
1939 | hw_breakpoint_error = 1; | |
1940 | fprintf_unfiltered (tmp_error_stream, | |
1941 | "Could not insert hardware watchpoint %d.\n", | |
1942 | bpt->number); | |
1943 | error = -1; | |
1944 | } | |
1945 | } | |
1946 | ||
e236ba44 | 1947 | if (error) |
81d0cc19 GS |
1948 | { |
1949 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1950 | message about possibly exhausted resources. */ | |
879bfdc2 | 1951 | if (hw_breakpoint_error) |
81d0cc19 | 1952 | { |
c6510018 MS |
1953 | fprintf_unfiltered (tmp_error_stream, |
1954 | "Could not insert hardware breakpoints:\n\ | |
1955 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1956 | } |
81d0cc19 GS |
1957 | target_terminal_ours_for_output (); |
1958 | error_stream (tmp_error_stream); | |
1959 | } | |
f7545552 TT |
1960 | |
1961 | do_cleanups (cleanups); | |
c906108c SS |
1962 | } |
1963 | ||
c906108c | 1964 | int |
fba45db2 | 1965 | remove_breakpoints (void) |
c906108c | 1966 | { |
35df4500 | 1967 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 1968 | int val = 0; |
c906108c | 1969 | |
35df4500 | 1970 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 1971 | { |
35df4500 TJB |
1972 | if (bl->inserted) |
1973 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 1974 | } |
3a1bae8e | 1975 | return val; |
c906108c SS |
1976 | } |
1977 | ||
6c95b8df PA |
1978 | /* Remove breakpoints of process PID. */ |
1979 | ||
1980 | int | |
1981 | remove_breakpoints_pid (int pid) | |
1982 | { | |
35df4500 | 1983 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
1984 | int val; |
1985 | struct inferior *inf = find_inferior_pid (pid); | |
1986 | ||
35df4500 | 1987 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 1988 | { |
35df4500 | 1989 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
1990 | continue; |
1991 | ||
35df4500 | 1992 | if (bl->inserted) |
6c95b8df | 1993 | { |
35df4500 | 1994 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
1995 | if (val != 0) |
1996 | return val; | |
1997 | } | |
1998 | } | |
1999 | return 0; | |
2000 | } | |
2001 | ||
692590c1 | 2002 | int |
80ce1ecb | 2003 | remove_hw_watchpoints (void) |
692590c1 | 2004 | { |
35df4500 | 2005 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2006 | int val = 0; |
692590c1 | 2007 | |
35df4500 | 2008 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 2009 | { |
35df4500 TJB |
2010 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
2011 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 2012 | } |
3a1bae8e | 2013 | return val; |
692590c1 MS |
2014 | } |
2015 | ||
c906108c | 2016 | int |
fba45db2 | 2017 | reattach_breakpoints (int pid) |
c906108c | 2018 | { |
6c95b8df | 2019 | struct cleanup *old_chain; |
35df4500 | 2020 | struct bp_location *bl, **blp_tmp; |
c906108c | 2021 | int val; |
86b887df | 2022 | struct ui_file *tmp_error_stream; |
fa3a767f | 2023 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2024 | struct inferior *inf; |
2025 | struct thread_info *tp; | |
2026 | ||
2027 | tp = any_live_thread_of_process (pid); | |
2028 | if (tp == NULL) | |
2029 | return 1; | |
2030 | ||
2031 | inf = find_inferior_pid (pid); | |
2032 | old_chain = save_inferior_ptid (); | |
2033 | ||
2034 | inferior_ptid = tp->ptid; | |
a4954f26 | 2035 | |
86b887df | 2036 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2037 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2038 | |
35df4500 | 2039 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2040 | { |
35df4500 | 2041 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2042 | continue; |
2043 | ||
35df4500 | 2044 | if (bl->inserted) |
c5aa993b | 2045 | { |
35df4500 TJB |
2046 | bl->inserted = 0; |
2047 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2048 | if (val != 0) |
2049 | { | |
ce696e05 | 2050 | do_cleanups (old_chain); |
c5aa993b JM |
2051 | return val; |
2052 | } | |
2053 | } | |
2054 | } | |
ce696e05 | 2055 | do_cleanups (old_chain); |
c906108c SS |
2056 | return 0; |
2057 | } | |
2058 | ||
e58b0e63 PA |
2059 | static int internal_breakpoint_number = -1; |
2060 | ||
84f4c1fe PM |
2061 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2062 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2063 | from internal_breakpoint_number and that variable decremented. | |
2064 | Otherwis the breakpoint number will be populated from | |
2065 | breakpoint_count and that value incremented. Internal breakpoints | |
2066 | do not set the internal var bpnum. */ | |
2067 | static void | |
2068 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2069 | { | |
2070 | if (internal) | |
2071 | b->number = internal_breakpoint_number--; | |
2072 | else | |
2073 | { | |
2074 | set_breakpoint_count (breakpoint_count + 1); | |
2075 | b->number = breakpoint_count; | |
2076 | } | |
2077 | } | |
2078 | ||
e62c965a | 2079 | static struct breakpoint * |
a6d9a66e UW |
2080 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2081 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2082 | { |
e62c965a PP |
2083 | struct symtab_and_line sal; |
2084 | struct breakpoint *b; | |
2085 | ||
4a64f543 | 2086 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2087 | |
2088 | sal.pc = address; | |
2089 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2090 | sal.pspace = current_program_space; |
e62c965a | 2091 | |
a6d9a66e | 2092 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2093 | b->number = internal_breakpoint_number--; |
2094 | b->disposition = disp_donttouch; | |
2095 | ||
2096 | return b; | |
2097 | } | |
2098 | ||
17450429 PP |
2099 | static const char *const longjmp_names[] = |
2100 | { | |
2101 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2102 | }; | |
2103 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2104 | ||
2105 | /* Per-objfile data private to breakpoint.c. */ | |
2106 | struct breakpoint_objfile_data | |
2107 | { | |
2108 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2109 | struct minimal_symbol *overlay_msym; | |
2110 | ||
2111 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2112 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2113 | ||
2114 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2115 | struct minimal_symbol *terminate_msym; | |
2116 | ||
2117 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2118 | struct minimal_symbol *exception_msym; | |
2119 | }; | |
2120 | ||
2121 | static const struct objfile_data *breakpoint_objfile_key; | |
2122 | ||
2123 | /* Minimal symbol not found sentinel. */ | |
2124 | static struct minimal_symbol msym_not_found; | |
2125 | ||
2126 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2127 | ||
2128 | static int | |
2129 | msym_not_found_p (const struct minimal_symbol *msym) | |
2130 | { | |
2131 | return msym == &msym_not_found; | |
2132 | } | |
2133 | ||
2134 | /* Return per-objfile data needed by breakpoint.c. | |
2135 | Allocate the data if necessary. */ | |
2136 | ||
2137 | static struct breakpoint_objfile_data * | |
2138 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2139 | { | |
2140 | struct breakpoint_objfile_data *bp_objfile_data; | |
2141 | ||
2142 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2143 | if (bp_objfile_data == NULL) | |
2144 | { | |
2145 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2146 | sizeof (*bp_objfile_data)); | |
2147 | ||
2148 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2149 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2150 | } | |
2151 | return bp_objfile_data; | |
2152 | } | |
2153 | ||
e62c965a | 2154 | static void |
af02033e | 2155 | create_overlay_event_breakpoint (void) |
e62c965a | 2156 | { |
69de3c6a | 2157 | struct objfile *objfile; |
af02033e | 2158 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2159 | |
69de3c6a PP |
2160 | ALL_OBJFILES (objfile) |
2161 | { | |
2162 | struct breakpoint *b; | |
17450429 PP |
2163 | struct breakpoint_objfile_data *bp_objfile_data; |
2164 | CORE_ADDR addr; | |
69de3c6a | 2165 | |
17450429 PP |
2166 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2167 | ||
2168 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2169 | continue; | |
2170 | ||
2171 | if (bp_objfile_data->overlay_msym == NULL) | |
2172 | { | |
2173 | struct minimal_symbol *m; | |
2174 | ||
2175 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2176 | if (m == NULL) | |
2177 | { | |
2178 | /* Avoid future lookups in this objfile. */ | |
2179 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2180 | continue; | |
2181 | } | |
2182 | bp_objfile_data->overlay_msym = m; | |
2183 | } | |
e62c965a | 2184 | |
17450429 PP |
2185 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2186 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
69de3c6a PP |
2187 | bp_overlay_event); |
2188 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2189 | |
69de3c6a PP |
2190 | if (overlay_debugging == ovly_auto) |
2191 | { | |
2192 | b->enable_state = bp_enabled; | |
2193 | overlay_events_enabled = 1; | |
2194 | } | |
2195 | else | |
2196 | { | |
2197 | b->enable_state = bp_disabled; | |
2198 | overlay_events_enabled = 0; | |
2199 | } | |
e62c965a PP |
2200 | } |
2201 | update_global_location_list (1); | |
2202 | } | |
2203 | ||
0fd8e87f | 2204 | static void |
af02033e | 2205 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2206 | { |
6c95b8df | 2207 | struct program_space *pspace; |
6c95b8df PA |
2208 | struct cleanup *old_chain; |
2209 | ||
2210 | old_chain = save_current_program_space (); | |
0fd8e87f | 2211 | |
6c95b8df | 2212 | ALL_PSPACES (pspace) |
af02033e PP |
2213 | { |
2214 | struct objfile *objfile; | |
2215 | ||
2216 | set_current_program_space (pspace); | |
2217 | ||
2218 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2219 | { |
af02033e PP |
2220 | int i; |
2221 | struct gdbarch *gdbarch; | |
17450429 | 2222 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2223 | |
af02033e PP |
2224 | gdbarch = get_objfile_arch (objfile); |
2225 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2226 | continue; |
2227 | ||
17450429 PP |
2228 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2229 | ||
2230 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2231 | { |
2232 | struct breakpoint *b; | |
af02033e | 2233 | const char *func_name; |
17450429 | 2234 | CORE_ADDR addr; |
6c95b8df | 2235 | |
17450429 | 2236 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2237 | continue; |
0fd8e87f | 2238 | |
17450429 PP |
2239 | func_name = longjmp_names[i]; |
2240 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2241 | { | |
2242 | struct minimal_symbol *m; | |
2243 | ||
2244 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2245 | if (m == NULL) | |
2246 | { | |
2247 | /* Prevent future lookups in this objfile. */ | |
2248 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2249 | continue; | |
2250 | } | |
2251 | bp_objfile_data->longjmp_msym[i] = m; | |
2252 | } | |
2253 | ||
2254 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
2255 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); | |
af02033e PP |
2256 | b->addr_string = xstrdup (func_name); |
2257 | b->enable_state = bp_disabled; | |
2258 | } | |
0fd8e87f | 2259 | } |
af02033e | 2260 | } |
0fd8e87f | 2261 | update_global_location_list (1); |
6c95b8df PA |
2262 | |
2263 | do_cleanups (old_chain); | |
0fd8e87f UW |
2264 | } |
2265 | ||
af02033e | 2266 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2267 | static void |
af02033e | 2268 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2269 | { |
2270 | struct program_space *pspace; | |
aa7d318d | 2271 | struct cleanup *old_chain; |
af02033e | 2272 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2273 | |
2274 | old_chain = save_current_program_space (); | |
2275 | ||
2276 | ALL_PSPACES (pspace) | |
17450429 PP |
2277 | { |
2278 | struct objfile *objfile; | |
2279 | CORE_ADDR addr; | |
2280 | ||
2281 | set_current_program_space (pspace); | |
2282 | ||
aa7d318d TT |
2283 | ALL_OBJFILES (objfile) |
2284 | { | |
2285 | struct breakpoint *b; | |
17450429 | 2286 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2287 | |
17450429 | 2288 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2289 | |
17450429 PP |
2290 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2291 | continue; | |
2292 | ||
2293 | if (bp_objfile_data->terminate_msym == NULL) | |
2294 | { | |
2295 | struct minimal_symbol *m; | |
2296 | ||
2297 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2298 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2299 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2300 | { | |
2301 | /* Prevent future lookups in this objfile. */ | |
2302 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2303 | continue; | |
2304 | } | |
2305 | bp_objfile_data->terminate_msym = m; | |
2306 | } | |
aa7d318d | 2307 | |
17450429 PP |
2308 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2309 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
aa7d318d TT |
2310 | bp_std_terminate_master); |
2311 | b->addr_string = xstrdup (func_name); | |
2312 | b->enable_state = bp_disabled; | |
2313 | } | |
17450429 PP |
2314 | } |
2315 | ||
aa7d318d TT |
2316 | update_global_location_list (1); |
2317 | ||
2318 | do_cleanups (old_chain); | |
2319 | } | |
2320 | ||
186c406b TT |
2321 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2322 | ||
2323 | void | |
2324 | create_exception_master_breakpoint (void) | |
2325 | { | |
2326 | struct objfile *objfile; | |
17450429 | 2327 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2328 | |
2329 | ALL_OBJFILES (objfile) | |
2330 | { | |
17450429 PP |
2331 | struct breakpoint *b; |
2332 | struct gdbarch *gdbarch; | |
2333 | struct breakpoint_objfile_data *bp_objfile_data; | |
2334 | CORE_ADDR addr; | |
2335 | ||
2336 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2337 | ||
2338 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2339 | continue; | |
2340 | ||
2341 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2342 | |
17450429 | 2343 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2344 | { |
17450429 | 2345 | struct minimal_symbol *debug_hook; |
186c406b | 2346 | |
17450429 PP |
2347 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2348 | if (debug_hook == NULL) | |
2349 | { | |
2350 | bp_objfile_data->exception_msym = &msym_not_found; | |
2351 | continue; | |
2352 | } | |
2353 | ||
2354 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2355 | } |
17450429 PP |
2356 | |
2357 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2358 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2359 | ¤t_target); | |
2360 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2361 | b->addr_string = xstrdup (func_name); | |
2362 | b->enable_state = bp_disabled; | |
186c406b TT |
2363 | } |
2364 | ||
2365 | update_global_location_list (1); | |
2366 | } | |
2367 | ||
c906108c | 2368 | void |
fba45db2 | 2369 | update_breakpoints_after_exec (void) |
c906108c | 2370 | { |
35df4500 | 2371 | struct breakpoint *b, *b_tmp; |
876fa593 | 2372 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2373 | |
25b22b0a PA |
2374 | /* We're about to delete breakpoints from GDB's lists. If the |
2375 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2376 | writing the breakpoints' "shadow contents" back into memory. The | |
2377 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2378 | do that. Instead, the target is responsible from marking | |
2379 | breakpoints out as soon as it detects an exec. We don't do that | |
2380 | here instead, because there may be other attempts to delete | |
2381 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2382 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2383 | if (bploc->pspace == current_program_space) |
2384 | gdb_assert (!bploc->inserted); | |
c906108c | 2385 | |
35df4500 | 2386 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2387 | { |
6c95b8df PA |
2388 | if (b->pspace != current_program_space) |
2389 | continue; | |
2390 | ||
4a64f543 | 2391 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2392 | if (b->type == bp_shlib_event) |
2393 | { | |
2394 | delete_breakpoint (b); | |
2395 | continue; | |
2396 | } | |
c906108c | 2397 | |
4a64f543 | 2398 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2399 | if (b->type == bp_jit_event) |
2400 | { | |
2401 | delete_breakpoint (b); | |
2402 | continue; | |
2403 | } | |
2404 | ||
1900040c | 2405 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2406 | as must overlay event and longjmp master breakpoints. */ |
2407 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2408 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2409 | || b->type == bp_exception_master) | |
c4093a6a JM |
2410 | { |
2411 | delete_breakpoint (b); | |
2412 | continue; | |
2413 | } | |
2414 | ||
4a64f543 | 2415 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2416 | if (b->type == bp_step_resume) |
2417 | { | |
2418 | delete_breakpoint (b); | |
2419 | continue; | |
2420 | } | |
2421 | ||
611c83ae PA |
2422 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2423 | after an exec. */ | |
186c406b TT |
2424 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2425 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2426 | { |
2427 | delete_breakpoint (b); | |
2428 | continue; | |
2429 | } | |
2430 | ||
ce78b96d JB |
2431 | if (b->type == bp_catchpoint) |
2432 | { | |
2433 | /* For now, none of the bp_catchpoint breakpoints need to | |
2434 | do anything at this point. In the future, if some of | |
2435 | the catchpoints need to something, we will need to add | |
2436 | a new method, and call this method from here. */ | |
2437 | continue; | |
2438 | } | |
2439 | ||
c5aa993b JM |
2440 | /* bp_finish is a special case. The only way we ought to be able |
2441 | to see one of these when an exec() has happened, is if the user | |
2442 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2443 | carries them to the call-site of the current callee, by setting | |
2444 | a temporary bp there and resuming. But in this case, the finish | |
2445 | will carry them entirely through the vfork & exec. | |
2446 | ||
2447 | We don't want to allow a bp_finish to remain inserted now. But | |
2448 | we can't safely delete it, 'cause finish_command has a handle to | |
2449 | the bp on a bpstat, and will later want to delete it. There's a | |
2450 | chance (and I've seen it happen) that if we delete the bp_finish | |
2451 | here, that its storage will get reused by the time finish_command | |
2452 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2453 | We really must allow finish_command to delete a bp_finish. | |
2454 | ||
53a5351d JM |
2455 | In the absense of a general solution for the "how do we know |
2456 | it's safe to delete something others may have handles to?" | |
2457 | problem, what we'll do here is just uninsert the bp_finish, and | |
2458 | let finish_command delete it. | |
2459 | ||
2460 | (We know the bp_finish is "doomed" in the sense that it's | |
2461 | momentary, and will be deleted as soon as finish_command sees | |
2462 | the inferior stopped. So it doesn't matter that the bp's | |
2463 | address is probably bogus in the new a.out, unlike e.g., the | |
2464 | solib breakpoints.) */ | |
c5aa993b | 2465 | |
c5aa993b JM |
2466 | if (b->type == bp_finish) |
2467 | { | |
2468 | continue; | |
2469 | } | |
2470 | ||
2471 | /* Without a symbolic address, we have little hope of the | |
2472 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2473 | a.out. */ |
c5aa993b JM |
2474 | if (b->addr_string == NULL) |
2475 | { | |
2476 | delete_breakpoint (b); | |
2477 | continue; | |
2478 | } | |
c5aa993b | 2479 | } |
1900040c | 2480 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2481 | create_overlay_event_breakpoint (); |
2482 | create_longjmp_master_breakpoint (); | |
2483 | create_std_terminate_master_breakpoint (); | |
186c406b | 2484 | create_exception_master_breakpoint (); |
c906108c SS |
2485 | } |
2486 | ||
2487 | int | |
fba45db2 | 2488 | detach_breakpoints (int pid) |
c906108c | 2489 | { |
35df4500 | 2490 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2491 | int val = 0; |
ce696e05 | 2492 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2493 | struct inferior *inf = current_inferior (); |
c5aa993b | 2494 | |
39f77062 | 2495 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2496 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2497 | |
6c95b8df | 2498 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2499 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2500 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2501 | { |
35df4500 | 2502 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2503 | continue; |
2504 | ||
35df4500 TJB |
2505 | if (bl->inserted) |
2506 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2507 | } |
d03285ec UW |
2508 | |
2509 | /* Detach single-step breakpoints as well. */ | |
2510 | detach_single_step_breakpoints (); | |
2511 | ||
ce696e05 | 2512 | do_cleanups (old_chain); |
3a1bae8e | 2513 | return val; |
c906108c SS |
2514 | } |
2515 | ||
35df4500 | 2516 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2517 | Note that this is used to detach breakpoints from a child fork. |
2518 | When we get here, the child isn't in the inferior list, and neither | |
2519 | do we have objects to represent its address space --- we should | |
35df4500 | 2520 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2521 | |
c906108c | 2522 | static int |
35df4500 | 2523 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2524 | { |
2525 | int val; | |
c5aa993b | 2526 | |
35df4500 TJB |
2527 | /* BL is never in moribund_locations by our callers. */ |
2528 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2529 | |
35df4500 | 2530 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2531 | /* Permanent breakpoints cannot be inserted or removed. */ |
2532 | return 0; | |
2533 | ||
74960c60 VP |
2534 | /* The type of none suggests that owner is actually deleted. |
2535 | This should not ever happen. */ | |
35df4500 | 2536 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2537 | |
35df4500 TJB |
2538 | if (bl->loc_type == bp_loc_software_breakpoint |
2539 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2540 | { |
c02f5703 MS |
2541 | /* "Normal" instruction breakpoint: either the standard |
2542 | trap-instruction bp (bp_breakpoint), or a | |
2543 | bp_hardware_breakpoint. */ | |
2544 | ||
2545 | /* First check to see if we have to handle an overlay. */ | |
2546 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2547 | || bl->section == NULL |
2548 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2549 | { |
2550 | /* No overlay handling: just remove the breakpoint. */ | |
2551 | ||
35df4500 TJB |
2552 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2553 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2554 | else |
35df4500 | 2555 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2556 | } |
c906108c SS |
2557 | else |
2558 | { | |
4a64f543 | 2559 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2560 | Did we set a breakpoint at the LMA? */ |
2561 | if (!overlay_events_enabled) | |
2562 | { | |
2563 | /* Yes -- overlay event support is not active, so we | |
2564 | should have set a breakpoint at the LMA. Remove it. | |
2565 | */ | |
c02f5703 MS |
2566 | /* Ignore any failures: if the LMA is in ROM, we will |
2567 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2568 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2569 | target_remove_hw_breakpoint (bl->gdbarch, | |
2570 | &bl->overlay_target_info); | |
c02f5703 | 2571 | else |
35df4500 TJB |
2572 | target_remove_breakpoint (bl->gdbarch, |
2573 | &bl->overlay_target_info); | |
c02f5703 MS |
2574 | } |
2575 | /* Did we set a breakpoint at the VMA? | |
2576 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2577 | if (bl->inserted) |
c906108c | 2578 | { |
c02f5703 MS |
2579 | /* Yes -- remove it. Previously we did not bother to |
2580 | remove the breakpoint if the section had been | |
2581 | unmapped, but let's not rely on that being safe. We | |
2582 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2583 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2584 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2585 | &bl->target_info); | |
aa67235e UW |
2586 | |
2587 | /* However, we should remove *software* breakpoints only | |
2588 | if the section is still mapped, or else we overwrite | |
2589 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2590 | else if (section_is_mapped (bl->section)) |
2591 | val = target_remove_breakpoint (bl->gdbarch, | |
2592 | &bl->target_info); | |
aa67235e UW |
2593 | else |
2594 | val = 0; | |
c906108c | 2595 | } |
c02f5703 MS |
2596 | else |
2597 | { | |
2598 | /* No -- not inserted, so no need to remove. No error. */ | |
2599 | val = 0; | |
2600 | } | |
c906108c | 2601 | } |
879d1e6b UW |
2602 | |
2603 | /* In some cases, we might not be able to remove a breakpoint | |
2604 | in a shared library that has already been removed, but we | |
2605 | have not yet processed the shlib unload event. */ | |
35df4500 | 2606 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2607 | val = 0; |
2608 | ||
c906108c SS |
2609 | if (val) |
2610 | return val; | |
35df4500 | 2611 | bl->inserted = (is == mark_inserted); |
c906108c | 2612 | } |
35df4500 | 2613 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2614 | { |
77b06cd7 TJB |
2615 | gdb_assert (bl->owner->ops != NULL |
2616 | && bl->owner->ops->remove_location != NULL); | |
2617 | ||
35df4500 | 2618 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2619 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2620 | |
c906108c | 2621 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2622 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2623 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2624 | bl->owner->number); |
c906108c | 2625 | } |
35df4500 TJB |
2626 | else if (bl->owner->type == bp_catchpoint |
2627 | && breakpoint_enabled (bl->owner) | |
2628 | && !bl->duplicate) | |
ce78b96d | 2629 | { |
77b06cd7 TJB |
2630 | gdb_assert (bl->owner->ops != NULL |
2631 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2632 | |
77b06cd7 | 2633 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2634 | if (val) |
2635 | return val; | |
77b06cd7 | 2636 | |
35df4500 | 2637 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2638 | } |
c906108c SS |
2639 | |
2640 | return 0; | |
2641 | } | |
2642 | ||
6c95b8df | 2643 | static int |
35df4500 | 2644 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2645 | { |
2646 | int ret; | |
2647 | struct cleanup *old_chain; | |
2648 | ||
35df4500 TJB |
2649 | /* BL is never in moribund_locations by our callers. */ |
2650 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2651 | |
35df4500 | 2652 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2653 | /* Permanent breakpoints cannot be inserted or removed. */ |
2654 | return 0; | |
2655 | ||
2656 | /* The type of none suggests that owner is actually deleted. | |
2657 | This should not ever happen. */ | |
35df4500 | 2658 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2659 | |
2660 | old_chain = save_current_space_and_thread (); | |
2661 | ||
35df4500 | 2662 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2663 | |
35df4500 | 2664 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2665 | |
2666 | do_cleanups (old_chain); | |
2667 | return ret; | |
2668 | } | |
2669 | ||
c906108c SS |
2670 | /* Clear the "inserted" flag in all breakpoints. */ |
2671 | ||
25b22b0a | 2672 | void |
fba45db2 | 2673 | mark_breakpoints_out (void) |
c906108c | 2674 | { |
35df4500 | 2675 | struct bp_location *bl, **blp_tmp; |
c906108c | 2676 | |
35df4500 TJB |
2677 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2678 | if (bl->pspace == current_program_space) | |
2679 | bl->inserted = 0; | |
c906108c SS |
2680 | } |
2681 | ||
53a5351d JM |
2682 | /* Clear the "inserted" flag in all breakpoints and delete any |
2683 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2684 | |
2685 | Plus other such housekeeping that has to be done for breakpoints | |
2686 | between runs. | |
2687 | ||
53a5351d JM |
2688 | Note: this function gets called at the end of a run (by |
2689 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2690 | init_wait_for_inferior). */ |
c906108c SS |
2691 | |
2692 | ||
2693 | ||
2694 | void | |
fba45db2 | 2695 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2696 | { |
35df4500 TJB |
2697 | struct breakpoint *b, *b_tmp; |
2698 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2699 | int ix; |
6c95b8df | 2700 | struct program_space *pspace = current_program_space; |
c906108c | 2701 | |
50c71eaf PA |
2702 | /* If breakpoint locations are shared across processes, then there's |
2703 | nothing to do. */ | |
2567c7d9 | 2704 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2705 | return; |
2706 | ||
35df4500 | 2707 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2708 | { |
35df4500 TJB |
2709 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2710 | if (bl->pspace == pspace | |
2711 | && bl->owner->enable_state != bp_permanent) | |
2712 | bl->inserted = 0; | |
6c95b8df | 2713 | } |
075f6582 | 2714 | |
35df4500 | 2715 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2716 | { |
6c95b8df PA |
2717 | if (b->loc && b->loc->pspace != pspace) |
2718 | continue; | |
2719 | ||
c5aa993b JM |
2720 | switch (b->type) |
2721 | { | |
2722 | case bp_call_dummy: | |
c906108c | 2723 | |
c5aa993b | 2724 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2725 | cause problems when the inferior is rerun, so we better get |
2726 | rid of it. */ | |
2727 | ||
2728 | case bp_watchpoint_scope: | |
2729 | ||
2730 | /* Also get rid of scope breakpoints. */ | |
2731 | ||
2732 | case bp_shlib_event: | |
2733 | ||
2734 | /* Also remove solib event breakpoints. Their addresses may | |
2735 | have changed since the last time we ran the program. | |
2736 | Actually we may now be debugging against different target; | |
2737 | and so the solib backend that installed this breakpoint may | |
2738 | not be used in by the target. E.g., | |
2739 | ||
2740 | (gdb) file prog-linux | |
2741 | (gdb) run # native linux target | |
2742 | ... | |
2743 | (gdb) kill | |
2744 | (gdb) file prog-win.exe | |
2745 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2746 | */ | |
c906108c | 2747 | |
c5aa993b JM |
2748 | delete_breakpoint (b); |
2749 | break; | |
c906108c | 2750 | |
c5aa993b JM |
2751 | case bp_watchpoint: |
2752 | case bp_hardware_watchpoint: | |
2753 | case bp_read_watchpoint: | |
2754 | case bp_access_watchpoint: | |
c906108c | 2755 | |
c5aa993b JM |
2756 | /* Likewise for watchpoints on local expressions. */ |
2757 | if (b->exp_valid_block != NULL) | |
2758 | delete_breakpoint (b); | |
967af18d | 2759 | else if (context == inf_starting) |
c860120c | 2760 | { |
4a64f543 MS |
2761 | /* Reset val field to force reread of starting value in |
2762 | insert_breakpoints. */ | |
c860120c PM |
2763 | if (b->val) |
2764 | value_free (b->val); | |
2765 | b->val = NULL; | |
fa4727a6 | 2766 | b->val_valid = 0; |
c860120c | 2767 | } |
c5aa993b JM |
2768 | break; |
2769 | default: | |
c5aa993b JM |
2770 | break; |
2771 | } | |
2772 | } | |
1c5cfe86 PA |
2773 | |
2774 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2775 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2776 | decref_bp_location (&bl); | |
1c5cfe86 | 2777 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2778 | } |
2779 | ||
6c95b8df PA |
2780 | /* These functions concern about actual breakpoints inserted in the |
2781 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2782 | we need to hop over the bkpt --- so we check for address space | |
2783 | match, not program space. */ | |
2784 | ||
c2c6d25f JM |
2785 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2786 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2787 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2788 | permanent breakpoint. | |
2789 | - When continuing from a location with an ordinary breakpoint, we | |
2790 | actually single step once before calling insert_breakpoints. | |
2791 | - When continuing from a localion with a permanent breakpoint, we | |
2792 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2793 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2794 | |
c2c6d25f | 2795 | enum breakpoint_here |
6c95b8df | 2796 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2797 | { |
35df4500 | 2798 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2799 | int any_breakpoint_here = 0; |
c906108c | 2800 | |
35df4500 | 2801 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2802 | { |
35df4500 TJB |
2803 | if (bl->loc_type != bp_loc_software_breakpoint |
2804 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2805 | continue; |
2806 | ||
f1310107 | 2807 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2808 | if ((breakpoint_enabled (bl->owner) |
2809 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2810 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2811 | { |
2812 | if (overlay_debugging | |
35df4500 TJB |
2813 | && section_is_overlay (bl->section) |
2814 | && !section_is_mapped (bl->section)) | |
075f6582 | 2815 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2816 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2817 | return permanent_breakpoint_here; |
2818 | else | |
2819 | any_breakpoint_here = 1; | |
2820 | } | |
2821 | } | |
c906108c | 2822 | |
c2c6d25f | 2823 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2824 | } |
2825 | ||
1c5cfe86 PA |
2826 | /* Return true if there's a moribund breakpoint at PC. */ |
2827 | ||
2828 | int | |
6c95b8df | 2829 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2830 | { |
2831 | struct bp_location *loc; | |
2832 | int ix; | |
2833 | ||
2834 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2835 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2836 | return 1; |
2837 | ||
2838 | return 0; | |
2839 | } | |
c2c6d25f | 2840 | |
c36b740a | 2841 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2842 | inserted using regular breakpoint_chain / bp_location array |
2843 | mechanism. This does not check for single-step breakpoints, which | |
2844 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2845 | |
2846 | int | |
4a64f543 MS |
2847 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2848 | CORE_ADDR pc) | |
c906108c | 2849 | { |
35df4500 | 2850 | struct bp_location *bl, **blp_tmp; |
c906108c | 2851 | |
35df4500 | 2852 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2853 | { |
35df4500 TJB |
2854 | if (bl->loc_type != bp_loc_software_breakpoint |
2855 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2856 | continue; |
2857 | ||
35df4500 | 2858 | if (bl->inserted |
f1310107 | 2859 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2860 | { |
2861 | if (overlay_debugging | |
35df4500 TJB |
2862 | && section_is_overlay (bl->section) |
2863 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2864 | continue; /* unmapped overlay -- can't be a match */ |
2865 | else | |
2866 | return 1; | |
2867 | } | |
c5aa993b | 2868 | } |
c36b740a VP |
2869 | return 0; |
2870 | } | |
2871 | ||
2872 | /* Returns non-zero iff there's either regular breakpoint | |
2873 | or a single step breakpoint inserted at PC. */ | |
2874 | ||
2875 | int | |
6c95b8df | 2876 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2877 | { |
6c95b8df | 2878 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2879 | return 1; |
c906108c | 2880 | |
6c95b8df | 2881 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2882 | return 1; |
2883 | ||
c906108c SS |
2884 | return 0; |
2885 | } | |
2886 | ||
4fa8626c DJ |
2887 | /* This function returns non-zero iff there is a software breakpoint |
2888 | inserted at PC. */ | |
2889 | ||
2890 | int | |
3e43a32a MS |
2891 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2892 | CORE_ADDR pc) | |
4fa8626c | 2893 | { |
35df4500 | 2894 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2895 | |
35df4500 | 2896 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2897 | { |
35df4500 | 2898 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2899 | continue; |
2900 | ||
35df4500 TJB |
2901 | if (bl->inserted |
2902 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2903 | aspace, pc)) |
4fa8626c DJ |
2904 | { |
2905 | if (overlay_debugging | |
35df4500 TJB |
2906 | && section_is_overlay (bl->section) |
2907 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2908 | continue; /* unmapped overlay -- can't be a match */ |
2909 | else | |
2910 | return 1; | |
2911 | } | |
2912 | } | |
2913 | ||
1aafd4da | 2914 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2915 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2916 | return 1; |
2917 | ||
4fa8626c DJ |
2918 | return 0; |
2919 | } | |
2920 | ||
9093389c PA |
2921 | int |
2922 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2923 | CORE_ADDR addr, ULONGEST len) | |
2924 | { | |
2925 | struct breakpoint *bpt; | |
2926 | ||
2927 | ALL_BREAKPOINTS (bpt) | |
2928 | { | |
2929 | struct bp_location *loc; | |
2930 | ||
2931 | if (bpt->type != bp_hardware_watchpoint | |
2932 | && bpt->type != bp_access_watchpoint) | |
2933 | continue; | |
2934 | ||
2935 | if (!breakpoint_enabled (bpt)) | |
2936 | continue; | |
2937 | ||
2938 | for (loc = bpt->loc; loc; loc = loc->next) | |
2939 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2940 | { | |
2941 | CORE_ADDR l, h; | |
2942 | ||
2943 | /* Check for intersection. */ | |
2944 | l = max (loc->address, addr); | |
2945 | h = min (loc->address + loc->length, addr + len); | |
2946 | if (l < h) | |
2947 | return 1; | |
2948 | } | |
2949 | } | |
2950 | return 0; | |
2951 | } | |
2952 | ||
075f6582 DJ |
2953 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2954 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2955 | |
2956 | int | |
6c95b8df PA |
2957 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2958 | ptid_t ptid) | |
c906108c | 2959 | { |
35df4500 | 2960 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2961 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2962 | int thread = -1; |
4a306c9a | 2963 | int task = 0; |
a6f1cd96 | 2964 | |
35df4500 | 2965 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2966 | { |
35df4500 TJB |
2967 | if (bl->loc_type != bp_loc_software_breakpoint |
2968 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2969 | continue; |
2970 | ||
35df4500 TJB |
2971 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2972 | if (!breakpoint_enabled (bl->owner) | |
2973 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2974 | continue; |
2975 | ||
f1310107 | 2976 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
2977 | continue; |
2978 | ||
35df4500 | 2979 | if (bl->owner->thread != -1) |
075f6582 | 2980 | { |
a6f1cd96 JB |
2981 | /* This is a thread-specific breakpoint. Check that ptid |
2982 | matches that thread. If thread hasn't been computed yet, | |
2983 | it is now time to do so. */ | |
2984 | if (thread == -1) | |
2985 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2986 | if (bl->owner->thread != thread) |
a6f1cd96 | 2987 | continue; |
075f6582 | 2988 | } |
a6f1cd96 | 2989 | |
35df4500 | 2990 | if (bl->owner->task != 0) |
4a306c9a JB |
2991 | { |
2992 | /* This is a task-specific breakpoint. Check that ptid | |
2993 | matches that task. If task hasn't been computed yet, | |
2994 | it is now time to do so. */ | |
2995 | if (task == 0) | |
2996 | task = ada_get_task_number (ptid); | |
35df4500 | 2997 | if (bl->owner->task != task) |
4a306c9a JB |
2998 | continue; |
2999 | } | |
3000 | ||
a6f1cd96 | 3001 | if (overlay_debugging |
35df4500 TJB |
3002 | && section_is_overlay (bl->section) |
3003 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3004 | continue; /* unmapped overlay -- can't be a match */ |
3005 | ||
3006 | return 1; | |
c5aa993b | 3007 | } |
c906108c SS |
3008 | |
3009 | return 0; | |
3010 | } | |
c906108c | 3011 | \f |
c5aa993b | 3012 | |
c906108c SS |
3013 | /* bpstat stuff. External routines' interfaces are documented |
3014 | in breakpoint.h. */ | |
3015 | ||
3016 | int | |
fba45db2 | 3017 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3018 | { |
533be4dd | 3019 | return (ep->type == bp_catchpoint); |
c906108c SS |
3020 | } |
3021 | ||
f431efe5 PA |
3022 | /* Frees any storage that is part of a bpstat. Does not walk the |
3023 | 'next' chain. */ | |
3024 | ||
3025 | static void | |
198757a8 VP |
3026 | bpstat_free (bpstat bs) |
3027 | { | |
3028 | if (bs->old_val != NULL) | |
3029 | value_free (bs->old_val); | |
9add0f1b | 3030 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3031 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3032 | xfree (bs); |
3033 | } | |
3034 | ||
c906108c SS |
3035 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3036 | Also free any storage that is part of a bpstat. */ | |
3037 | ||
3038 | void | |
fba45db2 | 3039 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3040 | { |
3041 | bpstat p; | |
3042 | bpstat q; | |
3043 | ||
3044 | if (bsp == 0) | |
3045 | return; | |
3046 | p = *bsp; | |
3047 | while (p != NULL) | |
3048 | { | |
3049 | q = p->next; | |
198757a8 | 3050 | bpstat_free (p); |
c906108c SS |
3051 | p = q; |
3052 | } | |
3053 | *bsp = NULL; | |
3054 | } | |
3055 | ||
3056 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3057 | is part of the bpstat is copied as well. */ | |
3058 | ||
3059 | bpstat | |
fba45db2 | 3060 | bpstat_copy (bpstat bs) |
c906108c SS |
3061 | { |
3062 | bpstat p = NULL; | |
3063 | bpstat tmp; | |
3064 | bpstat retval = NULL; | |
3065 | ||
3066 | if (bs == NULL) | |
3067 | return bs; | |
3068 | ||
3069 | for (; bs != NULL; bs = bs->next) | |
3070 | { | |
3071 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3072 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3073 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3074 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3075 | if (bs->old_val != NULL) |
3c3185ac JK |
3076 | { |
3077 | tmp->old_val = value_copy (bs->old_val); | |
3078 | release_value (tmp->old_val); | |
3079 | } | |
31cc81e9 | 3080 | |
c906108c SS |
3081 | if (p == NULL) |
3082 | /* This is the first thing in the chain. */ | |
3083 | retval = tmp; | |
3084 | else | |
3085 | p->next = tmp; | |
3086 | p = tmp; | |
3087 | } | |
3088 | p->next = NULL; | |
3089 | return retval; | |
3090 | } | |
3091 | ||
4a64f543 | 3092 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3093 | |
3094 | bpstat | |
fba45db2 | 3095 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3096 | { |
c5aa993b JM |
3097 | if (bsp == NULL) |
3098 | return NULL; | |
c906108c | 3099 | |
c5aa993b JM |
3100 | for (; bsp != NULL; bsp = bsp->next) |
3101 | { | |
f431efe5 | 3102 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3103 | return bsp; |
3104 | } | |
c906108c SS |
3105 | return NULL; |
3106 | } | |
3107 | ||
4a64f543 MS |
3108 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3109 | stopped at. *BSP upon return is a bpstat which points to the | |
3110 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3111 | good for anything but further calls to bpstat_num). | |
3112 | ||
8671a17b PA |
3113 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3114 | Return -1 if stopped at a breakpoint that has been deleted since | |
3115 | we set it. | |
3116 | Return 1 otherwise. */ | |
c906108c SS |
3117 | |
3118 | int | |
8671a17b | 3119 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3120 | { |
3121 | struct breakpoint *b; | |
3122 | ||
3123 | if ((*bsp) == NULL) | |
3124 | return 0; /* No more breakpoint values */ | |
8671a17b | 3125 | |
4a64f543 MS |
3126 | /* We assume we'll never have several bpstats that correspond to a |
3127 | single breakpoint -- otherwise, this function might return the | |
3128 | same number more than once and this will look ugly. */ | |
f431efe5 | 3129 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3130 | *bsp = (*bsp)->next; |
3131 | if (b == NULL) | |
3132 | return -1; /* breakpoint that's been deleted since */ | |
3133 | ||
3134 | *num = b->number; /* We have its number */ | |
3135 | return 1; | |
c906108c SS |
3136 | } |
3137 | ||
3138 | /* Modify BS so that the actions will not be performed. */ | |
3139 | ||
3140 | void | |
fba45db2 | 3141 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3142 | { |
3143 | for (; bs != NULL; bs = bs->next) | |
3144 | { | |
9add0f1b | 3145 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3146 | bs->commands_left = NULL; |
c906108c SS |
3147 | if (bs->old_val != NULL) |
3148 | { | |
3149 | value_free (bs->old_val); | |
3150 | bs->old_val = NULL; | |
3151 | } | |
3152 | } | |
3153 | } | |
3154 | ||
f3b1572e PA |
3155 | /* Called when a command is about to proceed the inferior. */ |
3156 | ||
3157 | static void | |
3158 | breakpoint_about_to_proceed (void) | |
3159 | { | |
3160 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3161 | { | |
3162 | struct thread_info *tp = inferior_thread (); | |
3163 | ||
3164 | /* Allow inferior function calls in breakpoint commands to not | |
3165 | interrupt the command list. When the call finishes | |
3166 | successfully, the inferior will be standing at the same | |
3167 | breakpoint as if nothing happened. */ | |
16c381f0 | 3168 | if (tp->control.in_infcall) |
f3b1572e PA |
3169 | return; |
3170 | } | |
3171 | ||
3172 | breakpoint_proceeded = 1; | |
3173 | } | |
3174 | ||
4a64f543 MS |
3175 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3176 | command. */ | |
c906108c | 3177 | static void |
4efb68b1 | 3178 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3179 | { |
3180 | executing_breakpoint_commands = 0; | |
3181 | } | |
3182 | ||
4a64f543 MS |
3183 | /* Execute all the commands associated with all the breakpoints at |
3184 | this location. Any of these commands could cause the process to | |
3185 | proceed beyond this point, etc. We look out for such changes by | |
3186 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3187 | |
347bddb7 PA |
3188 | Returns true if a breakpoint command resumed the inferior. In that |
3189 | case, it is the caller's responsibility to recall it again with the | |
3190 | bpstat of the current thread. */ | |
3191 | ||
3192 | static int | |
3193 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3194 | { |
3195 | bpstat bs; | |
3196 | struct cleanup *old_chain; | |
347bddb7 | 3197 | int again = 0; |
c906108c SS |
3198 | |
3199 | /* Avoid endless recursion if a `source' command is contained | |
3200 | in bs->commands. */ | |
3201 | if (executing_breakpoint_commands) | |
347bddb7 | 3202 | return 0; |
c906108c SS |
3203 | |
3204 | executing_breakpoint_commands = 1; | |
3205 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3206 | ||
4a64f543 | 3207 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3208 | bs = *bsp; |
3209 | ||
3210 | breakpoint_proceeded = 0; | |
3211 | for (; bs != NULL; bs = bs->next) | |
3212 | { | |
9add0f1b | 3213 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3214 | struct command_line *cmd; |
3215 | struct cleanup *this_cmd_tree_chain; | |
3216 | ||
3217 | /* Take ownership of the BSP's command tree, if it has one. | |
3218 | ||
3219 | The command tree could legitimately contain commands like | |
3220 | 'step' and 'next', which call clear_proceed_status, which | |
3221 | frees stop_bpstat's command tree. To make sure this doesn't | |
3222 | free the tree we're executing out from under us, we need to | |
3223 | take ownership of the tree ourselves. Since a given bpstat's | |
3224 | commands are only executed once, we don't need to copy it; we | |
3225 | can clear the pointer in the bpstat, and make sure we free | |
3226 | the tree when we're done. */ | |
9add0f1b TT |
3227 | ccmd = bs->commands; |
3228 | bs->commands = NULL; | |
3229 | this_cmd_tree_chain | |
3230 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3231 | cmd = bs->commands_left; | |
3232 | bs->commands_left = NULL; | |
6c50ab1c | 3233 | |
c906108c SS |
3234 | while (cmd != NULL) |
3235 | { | |
3236 | execute_control_command (cmd); | |
3237 | ||
3238 | if (breakpoint_proceeded) | |
3239 | break; | |
3240 | else | |
3241 | cmd = cmd->next; | |
3242 | } | |
6c50ab1c JB |
3243 | |
3244 | /* We can free this command tree now. */ | |
3245 | do_cleanups (this_cmd_tree_chain); | |
3246 | ||
c906108c | 3247 | if (breakpoint_proceeded) |
32c1e744 VP |
3248 | { |
3249 | if (target_can_async_p ()) | |
347bddb7 PA |
3250 | /* If we are in async mode, then the target might be still |
3251 | running, not stopped at any breakpoint, so nothing for | |
3252 | us to do here -- just return to the event loop. */ | |
3253 | ; | |
32c1e744 VP |
3254 | else |
3255 | /* In sync mode, when execute_control_command returns | |
3256 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3257 | Breakpoint commands for that stop were not run, since |
3258 | execute_command does not run breakpoint commands -- | |
3259 | only command_line_handler does, but that one is not | |
3260 | involved in execution of breakpoint commands. So, we | |
3261 | can now execute breakpoint commands. It should be | |
3262 | noted that making execute_command do bpstat actions is | |
3263 | not an option -- in this case we'll have recursive | |
3264 | invocation of bpstat for each breakpoint with a | |
3265 | command, and can easily blow up GDB stack. Instead, we | |
3266 | return true, which will trigger the caller to recall us | |
3267 | with the new stop_bpstat. */ | |
3268 | again = 1; | |
3269 | break; | |
32c1e744 | 3270 | } |
c906108c | 3271 | } |
c2b8ed2c | 3272 | do_cleanups (old_chain); |
347bddb7 PA |
3273 | return again; |
3274 | } | |
3275 | ||
3276 | void | |
3277 | bpstat_do_actions (void) | |
3278 | { | |
3279 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3280 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3281 | && target_has_execution | |
3282 | && !is_exited (inferior_ptid) | |
3283 | && !is_executing (inferior_ptid)) | |
3284 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3285 | and only return when it is stopped at the next breakpoint, we | |
3286 | keep doing breakpoint actions until it returns false to | |
3287 | indicate the inferior was not resumed. */ | |
16c381f0 | 3288 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3289 | break; |
c906108c SS |
3290 | } |
3291 | ||
fa4727a6 DJ |
3292 | /* Print out the (old or new) value associated with a watchpoint. */ |
3293 | ||
3294 | static void | |
3295 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3296 | { | |
3297 | if (val == NULL) | |
3298 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3299 | else | |
79a45b7d TT |
3300 | { |
3301 | struct value_print_options opts; | |
3302 | get_user_print_options (&opts); | |
3303 | value_print (val, stream, &opts); | |
3304 | } | |
fa4727a6 DJ |
3305 | } |
3306 | ||
e514a9d6 | 3307 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3308 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3309 | by having it set different print_it values. |
3310 | ||
3311 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3312 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3313 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3314 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3315 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3316 | |
3317 | Return values from this routine (ultimately used by bpstat_print() | |
3318 | and normal_stop() to decide what to do): | |
3319 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3320 | don't print anything else. | |
3321 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3322 | that something to be followed by a location. | |
3323 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3324 | that something to be followed by a location. | |
3325 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3326 | analysis. */ | |
c906108c | 3327 | |
917317f4 | 3328 | static enum print_stop_action |
fba45db2 | 3329 | print_it_typical (bpstat bs) |
c906108c | 3330 | { |
f7545552 | 3331 | struct cleanup *old_chain; |
4f8d1dc6 | 3332 | struct breakpoint *b; |
89f9893c | 3333 | const struct bp_location *bl; |
8b93c638 | 3334 | struct ui_stream *stb; |
f7545552 TT |
3335 | int bp_temp = 0; |
3336 | enum print_stop_action result; | |
3337 | ||
f431efe5 PA |
3338 | gdb_assert (bs->bp_location_at != NULL); |
3339 | ||
3340 | bl = bs->bp_location_at; | |
3341 | b = bs->breakpoint_at; | |
c906108c | 3342 | |
f7545552 TT |
3343 | stb = ui_out_stream_new (uiout); |
3344 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3345 | ||
4f8d1dc6 | 3346 | switch (b->type) |
c906108c | 3347 | { |
e514a9d6 JM |
3348 | case bp_breakpoint: |
3349 | case bp_hardware_breakpoint: | |
f431efe5 | 3350 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3351 | if (bl->address != bl->requested_address) |
3352 | breakpoint_adjustment_warning (bl->requested_address, | |
3353 | bl->address, | |
4f8d1dc6 VP |
3354 | b->number, 1); |
3355 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3356 | if (bp_temp) |
3357 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3358 | else | |
3359 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3360 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3361 | { |
3362 | ui_out_field_string (uiout, "reason", | |
3363 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3364 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3365 | } | |
4f8d1dc6 | 3366 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3367 | ui_out_text (uiout, ", "); |
f7545552 | 3368 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3369 | break; |
3370 | ||
3371 | case bp_shlib_event: | |
917317f4 JM |
3372 | /* Did we stop because the user set the stop_on_solib_events |
3373 | variable? (If so, we report this as a generic, "Stopped due | |
3374 | to shlib event" message.) */ | |
a3f17187 | 3375 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3376 | result = PRINT_NOTHING; |
e514a9d6 JM |
3377 | break; |
3378 | ||
c4093a6a | 3379 | case bp_thread_event: |
4a64f543 | 3380 | /* Not sure how we will get here. |
c4093a6a | 3381 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3382 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3383 | result = PRINT_NOTHING; |
c4093a6a JM |
3384 | break; |
3385 | ||
1900040c | 3386 | case bp_overlay_event: |
4a64f543 | 3387 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3388 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3389 | result = PRINT_NOTHING; |
1900040c MS |
3390 | break; |
3391 | ||
0fd8e87f UW |
3392 | case bp_longjmp_master: |
3393 | /* These should never be enabled. */ | |
3394 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3395 | result = PRINT_NOTHING; | |
3396 | break; | |
3397 | ||
aa7d318d TT |
3398 | case bp_std_terminate_master: |
3399 | /* These should never be enabled. */ | |
3e43a32a MS |
3400 | printf_filtered (_("std::terminate Master Breakpoint: " |
3401 | "gdb should not stop!\n")); | |
aa7d318d TT |
3402 | result = PRINT_NOTHING; |
3403 | break; | |
3404 | ||
186c406b TT |
3405 | case bp_exception_master: |
3406 | /* These should never be enabled. */ | |
3e43a32a MS |
3407 | printf_filtered (_("Exception Master Breakpoint: " |
3408 | "gdb should not stop!\n")); | |
186c406b TT |
3409 | result = PRINT_NOTHING; |
3410 | break; | |
3411 | ||
e514a9d6 JM |
3412 | case bp_watchpoint: |
3413 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3414 | annotate_watchpoint (b->number); |
3415 | if (ui_out_is_mi_like_p (uiout)) | |
3416 | ui_out_field_string | |
3417 | (uiout, "reason", | |
3418 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3419 | mention (b); | |
f7545552 | 3420 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3421 | ui_out_text (uiout, "\nOld value = "); |
3422 | watchpoint_value_print (bs->old_val, stb->stream); | |
3423 | ui_out_field_stream (uiout, "old", stb); | |
3424 | ui_out_text (uiout, "\nNew value = "); | |
3425 | watchpoint_value_print (b->val, stb->stream); | |
3426 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3427 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3428 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3429 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3430 | break; |
3431 | ||
3432 | case bp_read_watchpoint: | |
9dc5e2a9 | 3433 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3434 | ui_out_field_string |
3435 | (uiout, "reason", | |
3436 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3437 | mention (b); |
f7545552 | 3438 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3439 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3440 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3441 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3442 | ui_out_text (uiout, "\n"); |
f7545552 | 3443 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3444 | break; |
3445 | ||
3446 | case bp_access_watchpoint: | |
fa4727a6 | 3447 | if (bs->old_val != NULL) |
8b93c638 | 3448 | { |
4f8d1dc6 | 3449 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3450 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3451 | ui_out_field_string |
3452 | (uiout, "reason", | |
3453 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3454 | mention (b); |
f7545552 | 3455 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3456 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3457 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3458 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3459 | ui_out_text (uiout, "\nNew value = "); |
3460 | } | |
3461 | else | |
3462 | { | |
4f8d1dc6 | 3463 | mention (b); |
9dc5e2a9 | 3464 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3465 | ui_out_field_string |
3466 | (uiout, "reason", | |
3467 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3468 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3469 | ui_out_text (uiout, "\nValue = "); |
3470 | } | |
fa4727a6 | 3471 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3472 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3473 | ui_out_text (uiout, "\n"); |
f7545552 | 3474 | result = PRINT_UNKNOWN; |
e514a9d6 | 3475 | break; |
4ce44c66 | 3476 | |
e514a9d6 | 3477 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3478 | here. */ |
e514a9d6 | 3479 | |
11cf8741 | 3480 | case bp_finish: |
9dc5e2a9 | 3481 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3482 | ui_out_field_string |
3483 | (uiout, "reason", | |
3484 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3485 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3486 | break; |
3487 | ||
e514a9d6 | 3488 | case bp_until: |
9dc5e2a9 | 3489 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3490 | ui_out_field_string |
3491 | (uiout, "reason", | |
3492 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3493 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3494 | break; |
3495 | ||
c2d11a7d | 3496 | case bp_none: |
e514a9d6 JM |
3497 | case bp_longjmp: |
3498 | case bp_longjmp_resume: | |
186c406b TT |
3499 | case bp_exception: |
3500 | case bp_exception_resume: | |
e514a9d6 | 3501 | case bp_step_resume: |
e514a9d6 JM |
3502 | case bp_watchpoint_scope: |
3503 | case bp_call_dummy: | |
aa7d318d | 3504 | case bp_std_terminate: |
1042e4c0 | 3505 | case bp_tracepoint: |
7a697b8d | 3506 | case bp_fast_tracepoint: |
4efc6507 | 3507 | case bp_jit_event: |
0e30163f JK |
3508 | case bp_gnu_ifunc_resolver: |
3509 | case bp_gnu_ifunc_resolver_return: | |
e514a9d6 | 3510 | default: |
f7545552 TT |
3511 | result = PRINT_UNKNOWN; |
3512 | break; | |
e514a9d6 | 3513 | } |
f7545552 TT |
3514 | |
3515 | do_cleanups (old_chain); | |
3516 | return result; | |
e514a9d6 JM |
3517 | } |
3518 | ||
3519 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3520 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3521 | 'print_it' in the bpstat structure. Under some circumstances we |
3522 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3523 | normal_stop(). */ |
e514a9d6 JM |
3524 | |
3525 | static enum print_stop_action | |
3526 | print_bp_stop_message (bpstat bs) | |
3527 | { | |
3528 | switch (bs->print_it) | |
3529 | { | |
3530 | case print_it_noop: | |
4a64f543 | 3531 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3532 | return PRINT_UNKNOWN; |
3533 | break; | |
3534 | ||
3535 | case print_it_done: | |
3536 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3537 | relevant messages. */ |
e514a9d6 JM |
3538 | return PRINT_SRC_AND_LOC; |
3539 | break; | |
3540 | ||
3541 | case print_it_normal: | |
4f8d1dc6 | 3542 | { |
f431efe5 PA |
3543 | struct breakpoint *b = bs->breakpoint_at; |
3544 | ||
1a6a67de TJB |
3545 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3546 | which has since been deleted. */ | |
3547 | if (b == NULL) | |
3548 | return PRINT_UNKNOWN; | |
3549 | ||
4f8d1dc6 VP |
3550 | /* Normal case. Call the breakpoint's print_it method, or |
3551 | print_it_typical. */ | |
1a6a67de | 3552 | if (b->ops != NULL && b->ops->print_it != NULL) |
4f8d1dc6 VP |
3553 | return b->ops->print_it (b); |
3554 | else | |
3555 | return print_it_typical (bs); | |
3556 | } | |
3557 | break; | |
3086aeae | 3558 | |
e514a9d6 | 3559 | default: |
8e65ff28 | 3560 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3561 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3562 | break; |
c906108c | 3563 | } |
c906108c SS |
3564 | } |
3565 | ||
e514a9d6 JM |
3566 | /* Print a message indicating what happened. This is called from |
3567 | normal_stop(). The input to this routine is the head of the bpstat | |
3568 | list - a list of the eventpoints that caused this stop. This | |
3569 | routine calls the generic print routine for printing a message | |
3570 | about reasons for stopping. This will print (for example) the | |
3571 | "Breakpoint n," part of the output. The return value of this | |
3572 | routine is one of: | |
c906108c | 3573 | |
4a64f543 | 3574 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3575 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3576 | code to print the location. An example is |
c5aa993b JM |
3577 | "Breakpoint 1, " which should be followed by |
3578 | the location. | |
917317f4 | 3579 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3580 | to also print the location part of the message. |
3581 | An example is the catch/throw messages, which | |
4a64f543 | 3582 | don't require a location appended to the end. |
917317f4 | 3583 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3584 | further info to be printed. */ |
c906108c | 3585 | |
917317f4 | 3586 | enum print_stop_action |
fba45db2 | 3587 | bpstat_print (bpstat bs) |
c906108c SS |
3588 | { |
3589 | int val; | |
c5aa993b | 3590 | |
c906108c | 3591 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3592 | (Currently all watchpoints go on the bpstat whether hit or not. |
3593 | That probably could (should) be changed, provided care is taken | |
c906108c | 3594 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3595 | for (; bs; bs = bs->next) |
3596 | { | |
3597 | val = print_bp_stop_message (bs); | |
3598 | if (val == PRINT_SRC_ONLY | |
3599 | || val == PRINT_SRC_AND_LOC | |
3600 | || val == PRINT_NOTHING) | |
3601 | return val; | |
3602 | } | |
c906108c | 3603 | |
e514a9d6 | 3604 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3605 | with and nothing was printed. */ |
917317f4 | 3606 | return PRINT_UNKNOWN; |
c906108c SS |
3607 | } |
3608 | ||
4a64f543 MS |
3609 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3610 | used inside a catch_errors to evaluate the breakpoint condition. | |
3611 | The argument is a "struct expression *" that has been cast to a | |
3612 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3613 | |
3614 | static int | |
4efb68b1 | 3615 | breakpoint_cond_eval (void *exp) |
c906108c | 3616 | { |
278cd55f | 3617 | struct value *mark = value_mark (); |
c5aa993b | 3618 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3619 | |
c906108c SS |
3620 | value_free_to_mark (mark); |
3621 | return i; | |
3622 | } | |
3623 | ||
5760d0ab | 3624 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3625 | |
3626 | static bpstat | |
5760d0ab | 3627 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3628 | { |
3629 | bpstat bs; | |
3630 | ||
3631 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3632 | bs->next = NULL; |
3633 | **bs_link_pointer = bs; | |
3634 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3635 | bs->breakpoint_at = bl->owner; |
3636 | bs->bp_location_at = bl; | |
3637 | incref_bp_location (bl); | |
c906108c SS |
3638 | /* If the condition is false, etc., don't do the commands. */ |
3639 | bs->commands = NULL; | |
9add0f1b | 3640 | bs->commands_left = NULL; |
c906108c SS |
3641 | bs->old_val = NULL; |
3642 | bs->print_it = print_it_normal; | |
3643 | return bs; | |
3644 | } | |
3645 | \f | |
d983da9c DJ |
3646 | /* The target has stopped with waitstatus WS. Check if any hardware |
3647 | watchpoints have triggered, according to the target. */ | |
3648 | ||
3649 | int | |
3650 | watchpoints_triggered (struct target_waitstatus *ws) | |
3651 | { | |
d92524f1 | 3652 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3653 | CORE_ADDR addr; |
3654 | struct breakpoint *b; | |
3655 | ||
3656 | if (!stopped_by_watchpoint) | |
3657 | { | |
3658 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3659 | as not triggered. */ | |
3660 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3661 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3662 | b->watchpoint_triggered = watch_triggered_no; |
3663 | ||
3664 | return 0; | |
3665 | } | |
3666 | ||
3667 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3668 | { | |
3669 | /* We were stopped by a watchpoint, but we don't know where. | |
3670 | Mark all watchpoints as unknown. */ | |
3671 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3672 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3673 | b->watchpoint_triggered = watch_triggered_unknown; |
3674 | ||
3675 | return stopped_by_watchpoint; | |
3676 | } | |
3677 | ||
3678 | /* The target could report the data address. Mark watchpoints | |
3679 | affected by this data address as triggered, and all others as not | |
3680 | triggered. */ | |
3681 | ||
3682 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3683 | if (is_hardware_watchpoint (b)) |
d983da9c | 3684 | { |
a5606eee | 3685 | struct bp_location *loc; |
d983da9c DJ |
3686 | |
3687 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3688 | for (loc = b->loc; loc; loc = loc->next) |
3689 | /* Exact match not required. Within range is | |
3690 | sufficient. */ | |
5009afc5 AS |
3691 | if (target_watchpoint_addr_within_range (¤t_target, |
3692 | addr, loc->address, | |
3693 | loc->length)) | |
a5606eee VP |
3694 | { |
3695 | b->watchpoint_triggered = watch_triggered_yes; | |
3696 | break; | |
3697 | } | |
d983da9c DJ |
3698 | } |
3699 | ||
3700 | return 1; | |
3701 | } | |
3702 | ||
c906108c SS |
3703 | /* Possible return values for watchpoint_check (this can't be an enum |
3704 | because of check_errors). */ | |
3705 | /* The watchpoint has been deleted. */ | |
3706 | #define WP_DELETED 1 | |
3707 | /* The value has changed. */ | |
3708 | #define WP_VALUE_CHANGED 2 | |
3709 | /* The value has not changed. */ | |
3710 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3711 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3712 | #define WP_IGNORE 4 | |
c906108c SS |
3713 | |
3714 | #define BP_TEMPFLAG 1 | |
3715 | #define BP_HARDWAREFLAG 2 | |
3716 | ||
4a64f543 MS |
3717 | /* Evaluate watchpoint condition expression and check if its value |
3718 | changed. | |
553e4c11 JB |
3719 | |
3720 | P should be a pointer to struct bpstat, but is defined as a void * | |
3721 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3722 | |
3723 | static int | |
4efb68b1 | 3724 | watchpoint_check (void *p) |
c906108c SS |
3725 | { |
3726 | bpstat bs = (bpstat) p; | |
3727 | struct breakpoint *b; | |
3728 | struct frame_info *fr; | |
3729 | int within_current_scope; | |
3730 | ||
f431efe5 | 3731 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3732 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3733 | b = bs->breakpoint_at; |
c906108c | 3734 | |
d0fb5eae JK |
3735 | gdb_assert (is_watchpoint (b)); |
3736 | ||
f6bc2008 PA |
3737 | /* If this is a local watchpoint, we only want to check if the |
3738 | watchpoint frame is in scope if the current thread is the thread | |
3739 | that was used to create the watchpoint. */ | |
3740 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3741 | return WP_IGNORE; |
f6bc2008 | 3742 | |
c906108c SS |
3743 | if (b->exp_valid_block == NULL) |
3744 | within_current_scope = 1; | |
3745 | else | |
3746 | { | |
edb3359d DJ |
3747 | struct frame_info *frame = get_current_frame (); |
3748 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3749 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3750 | ||
4a64f543 MS |
3751 | /* in_function_epilogue_p() returns a non-zero value if we're |
3752 | still in the function but the stack frame has already been | |
3753 | invalidated. Since we can't rely on the values of local | |
3754 | variables after the stack has been destroyed, we are treating | |
3755 | the watchpoint in that state as `not changed' without further | |
3756 | checking. Don't mark watchpoints as changed if the current | |
3757 | frame is in an epilogue - even if they are in some other | |
3758 | frame, our view of the stack is likely to be wrong and | |
3759 | frame_find_by_id could error out. */ | |
a0f49112 | 3760 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3761 | return WP_IGNORE; |
a0f49112 | 3762 | |
101dcfbe | 3763 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3764 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3765 | |
3766 | /* If we've gotten confused in the unwinder, we might have | |
3767 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3768 | if (within_current_scope) |
3769 | { | |
3770 | struct symbol *function; | |
3771 | ||
3772 | function = get_frame_function (fr); | |
3773 | if (function == NULL | |
3774 | || !contained_in (b->exp_valid_block, | |
3775 | SYMBOL_BLOCK_VALUE (function))) | |
3776 | within_current_scope = 0; | |
3777 | } | |
69fbadd5 | 3778 | |
edb3359d | 3779 | if (within_current_scope) |
c906108c SS |
3780 | /* If we end up stopping, the current frame will get selected |
3781 | in normal_stop. So this call to select_frame won't affect | |
3782 | the user. */ | |
0f7d239c | 3783 | select_frame (fr); |
c906108c | 3784 | } |
c5aa993b | 3785 | |
c906108c SS |
3786 | if (within_current_scope) |
3787 | { | |
4a64f543 MS |
3788 | /* We use value_{,free_to_}mark because it could be a *long* |
3789 | time before we return to the command level and call | |
3790 | free_all_values. We can't call free_all_values because we | |
3791 | might be in the middle of evaluating a function call. */ | |
c906108c | 3792 | |
0cf6dd15 | 3793 | int pc = 0; |
278cd55f | 3794 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3795 | struct value *new_val; |
3796 | ||
0cf6dd15 | 3797 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3798 | |
4a64f543 MS |
3799 | /* We use value_equal_contents instead of value_equal because |
3800 | the latter coerces an array to a pointer, thus comparing just | |
3801 | the address of the array instead of its contents. This is | |
3802 | not what we want. */ | |
fa4727a6 | 3803 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3804 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3805 | { |
fa4727a6 DJ |
3806 | if (new_val != NULL) |
3807 | { | |
3808 | release_value (new_val); | |
3809 | value_free_to_mark (mark); | |
3810 | } | |
c906108c SS |
3811 | bs->old_val = b->val; |
3812 | b->val = new_val; | |
fa4727a6 | 3813 | b->val_valid = 1; |
c906108c SS |
3814 | return WP_VALUE_CHANGED; |
3815 | } | |
3816 | else | |
3817 | { | |
60e1c644 | 3818 | /* Nothing changed. */ |
c906108c | 3819 | value_free_to_mark (mark); |
c906108c SS |
3820 | return WP_VALUE_NOT_CHANGED; |
3821 | } | |
3822 | } | |
3823 | else | |
3824 | { | |
3825 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3826 | if we temporarily ignored the watchpoint, then when |
3827 | we reenter the block in which it is valid it contains | |
3828 | garbage (in the case of a function, it may have two | |
3829 | garbage values, one before and one after the prologue). | |
3830 | So we can't even detect the first assignment to it and | |
3831 | watch after that (since the garbage may or may not equal | |
3832 | the first value assigned). */ | |
4ce44c66 JM |
3833 | /* We print all the stop information in print_it_typical(), but |
3834 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3835 | will be deleted already. So we have no choice but print the |
3836 | information here. */ | |
9dc5e2a9 | 3837 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3838 | ui_out_field_string |
3839 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3840 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3841 | ui_out_field_int (uiout, "wpnum", b->number); |
3e43a32a MS |
3842 | ui_out_text (uiout, |
3843 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3844 | which its expression is valid.\n"); |
4ce44c66 | 3845 | |
d0fb5eae | 3846 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3847 | |
3848 | return WP_DELETED; | |
3849 | } | |
3850 | } | |
3851 | ||
18a18393 VP |
3852 | /* Return true if it looks like target has stopped due to hitting |
3853 | breakpoint location BL. This function does not check if we | |
3854 | should stop, only if BL explains the stop. */ | |
3855 | static int | |
6c95b8df PA |
3856 | bpstat_check_location (const struct bp_location *bl, |
3857 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3858 | { |
3859 | struct breakpoint *b = bl->owner; | |
3860 | ||
2bdf28a0 JK |
3861 | /* BL is from existing struct breakpoint. */ |
3862 | gdb_assert (b != NULL); | |
3863 | ||
f1310107 TJB |
3864 | if (b->ops && b->ops->breakpoint_hit) |
3865 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); | |
3866 | ||
e8595ef6 SS |
3867 | /* By definition, the inferior does not report stops at |
3868 | tracepoints. */ | |
d77f58be | 3869 | if (is_tracepoint (b)) |
e8595ef6 SS |
3870 | return 0; |
3871 | ||
cc60f2e3 | 3872 | if (!is_watchpoint (b) |
18a18393 | 3873 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3874 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3875 | { |
6c95b8df PA |
3876 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3877 | aspace, bp_addr)) | |
18a18393 VP |
3878 | return 0; |
3879 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3880 | && section_is_overlay (bl->section) |
18a18393 VP |
3881 | && !section_is_mapped (bl->section)) |
3882 | return 0; | |
3883 | } | |
cc60f2e3 | 3884 | |
18a18393 VP |
3885 | /* Continuable hardware watchpoints are treated as non-existent if the |
3886 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3887 | some data address). Otherwise gdb won't stop on a break instruction | |
3888 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3889 | been defined. Also skip watchpoints which we know did not trigger | |
3890 | (did not match the data address). */ | |
cc60f2e3 PA |
3891 | |
3892 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3893 | && b->watchpoint_triggered == watch_triggered_no) |
3894 | return 0; | |
f1310107 | 3895 | |
18a18393 VP |
3896 | if (b->type == bp_hardware_breakpoint) |
3897 | { | |
3898 | if (bl->address != bp_addr) | |
3899 | return 0; | |
3900 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3901 | && section_is_overlay (bl->section) |
18a18393 VP |
3902 | && !section_is_mapped (bl->section)) |
3903 | return 0; | |
3904 | } | |
ce78b96d | 3905 | |
18a18393 VP |
3906 | return 1; |
3907 | } | |
3908 | ||
3909 | /* If BS refers to a watchpoint, determine if the watched values | |
3910 | has actually changed, and we should stop. If not, set BS->stop | |
3911 | to 0. */ | |
3912 | static void | |
3913 | bpstat_check_watchpoint (bpstat bs) | |
3914 | { | |
2bdf28a0 JK |
3915 | const struct bp_location *bl; |
3916 | struct breakpoint *b; | |
3917 | ||
3918 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3919 | bl = bs->bp_location_at; |
2bdf28a0 | 3920 | gdb_assert (bl != NULL); |
f431efe5 | 3921 | b = bs->breakpoint_at; |
2bdf28a0 | 3922 | gdb_assert (b != NULL); |
18a18393 | 3923 | |
cc60f2e3 | 3924 | if (is_watchpoint (b)) |
18a18393 | 3925 | { |
18a18393 VP |
3926 | int must_check_value = 0; |
3927 | ||
3928 | if (b->type == bp_watchpoint) | |
3929 | /* For a software watchpoint, we must always check the | |
3930 | watched value. */ | |
3931 | must_check_value = 1; | |
3932 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3933 | /* We have a hardware watchpoint (read, write, or access) | |
3934 | and the target earlier reported an address watched by | |
3935 | this watchpoint. */ | |
3936 | must_check_value = 1; | |
3937 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3938 | && b->type == bp_hardware_watchpoint) | |
3939 | /* We were stopped by a hardware watchpoint, but the target could | |
3940 | not report the data address. We must check the watchpoint's | |
3941 | value. Access and read watchpoints are out of luck; without | |
3942 | a data address, we can't figure it out. */ | |
3943 | must_check_value = 1; | |
3944 | ||
3945 | if (must_check_value) | |
3946 | { | |
3e43a32a MS |
3947 | char *message |
3948 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3949 | b->number); | |
18a18393 VP |
3950 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3951 | int e = catch_errors (watchpoint_check, bs, message, | |
3952 | RETURN_MASK_ALL); | |
3953 | do_cleanups (cleanups); | |
3954 | switch (e) | |
3955 | { | |
3956 | case WP_DELETED: | |
3957 | /* We've already printed what needs to be printed. */ | |
3958 | bs->print_it = print_it_done; | |
3959 | /* Stop. */ | |
3960 | break; | |
60e1c644 PA |
3961 | case WP_IGNORE: |
3962 | bs->print_it = print_it_noop; | |
3963 | bs->stop = 0; | |
3964 | break; | |
18a18393 VP |
3965 | case WP_VALUE_CHANGED: |
3966 | if (b->type == bp_read_watchpoint) | |
3967 | { | |
85d721b8 PA |
3968 | /* There are two cases to consider here: |
3969 | ||
4a64f543 | 3970 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3971 | In that case, trust the target, and always report |
3972 | the watchpoint hit to the user. Even though | |
3973 | reads don't cause value changes, the value may | |
3974 | have changed since the last time it was read, and | |
3975 | since we're not trapping writes, we will not see | |
3976 | those, and as such we should ignore our notion of | |
3977 | old value. | |
3978 | ||
4a64f543 | 3979 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3980 | reads and writes. There are two ways this may |
3981 | happen: | |
3982 | ||
4a64f543 | 3983 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3984 | reads only, but can break on accesses (reads or |
3985 | writes), such as e.g., x86. We detect this case | |
3986 | at the time we try to insert read watchpoints. | |
3987 | ||
4a64f543 | 3988 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3989 | watchpoints, but, the user set an access or write |
3990 | watchpoint watching the same memory as this read | |
3991 | watchpoint. | |
3992 | ||
3993 | If we're watching memory writes as well as reads, | |
3994 | ignore watchpoint hits when we find that the | |
3995 | value hasn't changed, as reads don't cause | |
3996 | changes. This still gives false positives when | |
3997 | the program writes the same value to memory as | |
3998 | what there was already in memory (we will confuse | |
3999 | it for a read), but it's much better than | |
4000 | nothing. */ | |
4001 | ||
4002 | int other_write_watchpoint = 0; | |
4003 | ||
4004 | if (bl->watchpoint_type == hw_read) | |
4005 | { | |
4006 | struct breakpoint *other_b; | |
4007 | ||
4008 | ALL_BREAKPOINTS (other_b) | |
4009 | if ((other_b->type == bp_hardware_watchpoint | |
4010 | || other_b->type == bp_access_watchpoint) | |
4011 | && (other_b->watchpoint_triggered | |
4012 | == watch_triggered_yes)) | |
4013 | { | |
4014 | other_write_watchpoint = 1; | |
4015 | break; | |
4016 | } | |
4017 | } | |
4018 | ||
4019 | if (other_write_watchpoint | |
4020 | || bl->watchpoint_type == hw_access) | |
4021 | { | |
4022 | /* We're watching the same memory for writes, | |
4023 | and the value changed since the last time we | |
4024 | updated it, so this trap must be for a write. | |
4025 | Ignore it. */ | |
4026 | bs->print_it = print_it_noop; | |
4027 | bs->stop = 0; | |
4028 | } | |
18a18393 VP |
4029 | } |
4030 | break; | |
4031 | case WP_VALUE_NOT_CHANGED: | |
4032 | if (b->type == bp_hardware_watchpoint | |
4033 | || b->type == bp_watchpoint) | |
4034 | { | |
4035 | /* Don't stop: write watchpoints shouldn't fire if | |
4036 | the value hasn't changed. */ | |
4037 | bs->print_it = print_it_noop; | |
4038 | bs->stop = 0; | |
4039 | } | |
4040 | /* Stop. */ | |
4041 | break; | |
4042 | default: | |
4043 | /* Can't happen. */ | |
4044 | case 0: | |
4045 | /* Error from catch_errors. */ | |
4046 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
d0fb5eae | 4047 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4048 | /* We've already printed what needs to be printed. */ |
4049 | bs->print_it = print_it_done; | |
4050 | break; | |
4051 | } | |
4052 | } | |
4053 | else /* must_check_value == 0 */ | |
4054 | { | |
4055 | /* This is a case where some watchpoint(s) triggered, but | |
4056 | not at the address of this watchpoint, or else no | |
4057 | watchpoint triggered after all. So don't print | |
4058 | anything for this watchpoint. */ | |
4059 | bs->print_it = print_it_noop; | |
4060 | bs->stop = 0; | |
4061 | } | |
4062 | } | |
4063 | } | |
4064 | ||
4065 | ||
4066 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4067 | of breakpoint referred to by BS. If we should not stop for this | |
4068 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4069 | |
18a18393 VP |
4070 | static void |
4071 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4072 | { | |
4073 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4074 | const struct bp_location *bl; |
4075 | struct breakpoint *b; | |
4076 | ||
4077 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4078 | bl = bs->bp_location_at; |
2bdf28a0 | 4079 | gdb_assert (bl != NULL); |
f431efe5 | 4080 | b = bs->breakpoint_at; |
2bdf28a0 | 4081 | gdb_assert (b != NULL); |
18a18393 VP |
4082 | |
4083 | if (frame_id_p (b->frame_id) | |
edb3359d | 4084 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4085 | bs->stop = 0; |
4086 | else if (bs->stop) | |
4087 | { | |
4088 | int value_is_zero = 0; | |
60e1c644 PA |
4089 | struct expression *cond; |
4090 | ||
7371cf6d PM |
4091 | /* Evaluate Python breakpoints that have a "stop" |
4092 | method implemented. */ | |
4093 | if (b->py_bp_object) | |
4094 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4095 | ||
60e1c644 PA |
4096 | if (is_watchpoint (b)) |
4097 | cond = b->cond_exp; | |
4098 | else | |
4099 | cond = bl->cond; | |
4100 | ||
f431efe5 | 4101 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4102 | { |
60e1c644 PA |
4103 | int within_current_scope = 1; |
4104 | ||
c5bc3a77 DJ |
4105 | /* We use value_mark and value_free_to_mark because it could |
4106 | be a long time before we return to the command level and | |
4107 | call free_all_values. We can't call free_all_values | |
4108 | because we might be in the middle of evaluating a | |
4109 | function call. */ | |
4110 | struct value *mark = value_mark (); | |
4111 | ||
edb3359d DJ |
4112 | /* Need to select the frame, with all that implies so that |
4113 | the conditions will have the right context. Because we | |
4114 | use the frame, we will not see an inlined function's | |
4115 | variables when we arrive at a breakpoint at the start | |
4116 | of the inlined function; the current frame will be the | |
4117 | call site. */ | |
60e1c644 PA |
4118 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4119 | select_frame (get_current_frame ()); | |
4120 | else | |
4121 | { | |
4122 | struct frame_info *frame; | |
4123 | ||
4124 | /* For local watchpoint expressions, which particular | |
4125 | instance of a local is being watched matters, so we | |
4126 | keep track of the frame to evaluate the expression | |
4127 | in. To evaluate the condition however, it doesn't | |
4128 | really matter which instantiation of the function | |
4129 | where the condition makes sense triggers the | |
4130 | watchpoint. This allows an expression like "watch | |
4131 | global if q > 10" set in `func', catch writes to | |
4132 | global on all threads that call `func', or catch | |
4133 | writes on all recursive calls of `func' by a single | |
4134 | thread. We simply always evaluate the condition in | |
4135 | the innermost frame that's executing where it makes | |
4136 | sense to evaluate the condition. It seems | |
4137 | intuitive. */ | |
4138 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4139 | if (frame != NULL) | |
4140 | select_frame (frame); | |
4141 | else | |
4142 | within_current_scope = 0; | |
4143 | } | |
4144 | if (within_current_scope) | |
4145 | value_is_zero | |
4146 | = catch_errors (breakpoint_cond_eval, cond, | |
4147 | "Error in testing breakpoint condition:\n", | |
4148 | RETURN_MASK_ALL); | |
4149 | else | |
4150 | { | |
4151 | warning (_("Watchpoint condition cannot be tested " | |
4152 | "in the current scope")); | |
4153 | /* If we failed to set the right context for this | |
4154 | watchpoint, unconditionally report it. */ | |
4155 | value_is_zero = 0; | |
4156 | } | |
4a64f543 | 4157 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4158 | value_free_to_mark (mark); |
18a18393 | 4159 | } |
60e1c644 PA |
4160 | |
4161 | if (cond && value_is_zero) | |
18a18393 VP |
4162 | { |
4163 | bs->stop = 0; | |
4164 | } | |
4165 | else if (b->thread != -1 && b->thread != thread_id) | |
4166 | { | |
4167 | bs->stop = 0; | |
4168 | } | |
4169 | else if (b->ignore_count > 0) | |
4170 | { | |
4171 | b->ignore_count--; | |
4172 | annotate_ignore_count_change (); | |
4173 | bs->stop = 0; | |
4a64f543 | 4174 | /* Increase the hit count even though we don't stop. */ |
18a18393 VP |
4175 | ++(b->hit_count); |
4176 | } | |
4177 | } | |
4178 | } | |
4179 | ||
4180 | ||
9709f61c | 4181 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4182 | BP_ADDR in thread PTID. |
c906108c | 4183 | |
d983da9c | 4184 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4185 | don't understand this stop. Result is a chain of bpstat's such |
4186 | that: | |
c906108c | 4187 | |
c5aa993b | 4188 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4189 | |
c5aa993b | 4190 | if we understand why we stopped, the result is not null. |
c906108c | 4191 | |
c5aa993b JM |
4192 | Each element of the chain refers to a particular breakpoint or |
4193 | watchpoint at which we have stopped. (We may have stopped for | |
4194 | several reasons concurrently.) | |
c906108c | 4195 | |
c5aa993b JM |
4196 | Each element of the chain has valid next, breakpoint_at, |
4197 | commands, FIXME??? fields. */ | |
c906108c SS |
4198 | |
4199 | bpstat | |
6c95b8df PA |
4200 | bpstat_stop_status (struct address_space *aspace, |
4201 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4202 | { |
0d381245 | 4203 | struct breakpoint *b = NULL; |
afe38095 | 4204 | struct bp_location *bl; |
20874c92 | 4205 | struct bp_location *loc; |
5760d0ab JK |
4206 | /* First item of allocated bpstat's. */ |
4207 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4208 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4209 | bpstat bs; |
20874c92 | 4210 | int ix; |
429374b8 | 4211 | int need_remove_insert; |
f431efe5 | 4212 | int removed_any; |
c906108c | 4213 | |
f431efe5 PA |
4214 | /* First, build the bpstat chain with locations that explain a |
4215 | target stop, while being careful to not set the target running, | |
4216 | as that may invalidate locations (in particular watchpoint | |
4217 | locations are recreated). Resuming will happen here with | |
4218 | breakpoint conditions or watchpoint expressions that include | |
4219 | inferior function calls. */ | |
c5aa993b | 4220 | |
429374b8 JK |
4221 | ALL_BREAKPOINTS (b) |
4222 | { | |
4223 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4224 | continue; | |
a5606eee | 4225 | |
429374b8 JK |
4226 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4227 | { | |
4a64f543 MS |
4228 | /* For hardware watchpoints, we look only at the first |
4229 | location. The watchpoint_check function will work on the | |
4230 | entire expression, not the individual locations. For | |
4231 | read watchpoints, the watchpoints_triggered function has | |
4232 | checked all locations already. */ | |
429374b8 JK |
4233 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4234 | break; | |
18a18393 | 4235 | |
429374b8 JK |
4236 | if (bl->shlib_disabled) |
4237 | continue; | |
c5aa993b | 4238 | |
429374b8 JK |
4239 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4240 | continue; | |
c5aa993b | 4241 | |
4a64f543 MS |
4242 | /* Come here if it's a watchpoint, or if the break address |
4243 | matches. */ | |
c5aa993b | 4244 | |
4a64f543 MS |
4245 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4246 | explain stop. */ | |
c5aa993b | 4247 | |
f431efe5 PA |
4248 | /* Assume we stop. Should we find a watchpoint that is not |
4249 | actually triggered, or if the condition of the breakpoint | |
4250 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4251 | bs->stop = 1; |
4252 | bs->print = 1; | |
d983da9c | 4253 | |
f431efe5 PA |
4254 | /* If this is a scope breakpoint, mark the associated |
4255 | watchpoint as triggered so that we will handle the | |
4256 | out-of-scope event. We'll get to the watchpoint next | |
4257 | iteration. */ | |
d0fb5eae | 4258 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
f431efe5 PA |
4259 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; |
4260 | } | |
4261 | } | |
4262 | ||
4263 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4264 | { | |
f1310107 | 4265 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4266 | { |
5760d0ab | 4267 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4268 | /* For hits of moribund locations, we should just proceed. */ |
4269 | bs->stop = 0; | |
4270 | bs->print = 0; | |
4271 | bs->print_it = print_it_noop; | |
4272 | } | |
4273 | } | |
4274 | ||
f431efe5 PA |
4275 | /* Now go through the locations that caused the target to stop, and |
4276 | check whether we're interested in reporting this stop to higher | |
4277 | layers, or whether we should resume the target transparently. */ | |
4278 | ||
4279 | removed_any = 0; | |
4280 | ||
5760d0ab | 4281 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4282 | { |
4283 | if (!bs->stop) | |
4284 | continue; | |
4285 | ||
4286 | bpstat_check_watchpoint (bs); | |
4287 | if (!bs->stop) | |
4288 | continue; | |
4289 | ||
4290 | b = bs->breakpoint_at; | |
18a18393 | 4291 | |
429374b8 | 4292 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4293 | || b->type == bp_longjmp_master |
186c406b TT |
4294 | || b->type == bp_std_terminate_master |
4295 | || b->type == bp_exception_master) | |
429374b8 JK |
4296 | /* We do not stop for these. */ |
4297 | bs->stop = 0; | |
4298 | else | |
4299 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4300 | |
429374b8 JK |
4301 | if (bs->stop) |
4302 | { | |
4303 | ++(b->hit_count); | |
c906108c | 4304 | |
4a64f543 | 4305 | /* We will stop here. */ |
429374b8 JK |
4306 | if (b->disposition == disp_disable) |
4307 | { | |
4308 | if (b->enable_state != bp_permanent) | |
4309 | b->enable_state = bp_disabled; | |
f431efe5 | 4310 | removed_any = 1; |
429374b8 JK |
4311 | } |
4312 | if (b->silent) | |
4313 | bs->print = 0; | |
4314 | bs->commands = b->commands; | |
9add0f1b TT |
4315 | incref_counted_command_line (bs->commands); |
4316 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4317 | if (bs->commands_left | |
4318 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4319 | || (xdb_commands | |
4320 | && strcmp ("Q", | |
4321 | bs->commands_left->line) == 0))) | |
429374b8 | 4322 | { |
9add0f1b | 4323 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4324 | bs->print = 0; |
4325 | } | |
429374b8 JK |
4326 | } |
4327 | ||
4328 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4329 | if (bs->stop == 0 || bs->print == 0) | |
4330 | bs->print_it = print_it_noop; | |
429374b8 | 4331 | } |
876fa593 | 4332 | |
d983da9c DJ |
4333 | /* If we aren't stopping, the value of some hardware watchpoint may |
4334 | not have changed, but the intermediate memory locations we are | |
4335 | watching may have. Don't bother if we're stopping; this will get | |
4336 | done later. */ | |
d832cb68 | 4337 | need_remove_insert = 0; |
5760d0ab JK |
4338 | if (! bpstat_causes_stop (bs_head)) |
4339 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4340 | if (!bs->stop |
f431efe5 PA |
4341 | && bs->breakpoint_at |
4342 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4343 | { |
4a64f543 | 4344 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4345 | need_remove_insert = 1; |
d983da9c DJ |
4346 | } |
4347 | ||
d832cb68 | 4348 | if (need_remove_insert) |
2d134ed3 | 4349 | update_global_location_list (1); |
f431efe5 PA |
4350 | else if (removed_any) |
4351 | update_global_location_list (0); | |
d832cb68 | 4352 | |
5760d0ab | 4353 | return bs_head; |
c906108c | 4354 | } |
628fe4e4 JK |
4355 | |
4356 | static void | |
4357 | handle_jit_event (void) | |
4358 | { | |
4359 | struct frame_info *frame; | |
4360 | struct gdbarch *gdbarch; | |
4361 | ||
4362 | /* Switch terminal for any messages produced by | |
4363 | breakpoint_re_set. */ | |
4364 | target_terminal_ours_for_output (); | |
4365 | ||
4366 | frame = get_current_frame (); | |
4367 | gdbarch = get_frame_arch (frame); | |
4368 | ||
4369 | jit_event_handler (gdbarch); | |
4370 | ||
4371 | target_terminal_inferior (); | |
4372 | } | |
4373 | ||
4374 | /* Prepare WHAT final decision for infrun. */ | |
4375 | ||
4376 | /* Decide what infrun needs to do with this bpstat. */ | |
4377 | ||
c906108c | 4378 | struct bpstat_what |
0e30163f | 4379 | bpstat_what (bpstat bs_head) |
c906108c | 4380 | { |
c906108c | 4381 | struct bpstat_what retval; |
628fe4e4 JK |
4382 | /* We need to defer calling `solib_add', as adding new symbols |
4383 | resets breakpoints, which in turn deletes breakpoint locations, | |
4384 | and hence may clear unprocessed entries in the BS chain. */ | |
4385 | int shlib_event = 0; | |
4386 | int jit_event = 0; | |
0e30163f | 4387 | bpstat bs; |
c906108c | 4388 | |
628fe4e4 | 4389 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4390 | retval.call_dummy = STOP_NONE; |
186c406b | 4391 | retval.is_longjmp = 0; |
628fe4e4 | 4392 | |
0e30163f | 4393 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4394 | { |
628fe4e4 JK |
4395 | /* Extract this BS's action. After processing each BS, we check |
4396 | if its action overrides all we've seem so far. */ | |
4397 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4398 | enum bptype bptype; | |
4399 | ||
c906108c | 4400 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4401 | { |
4402 | /* I suspect this can happen if it was a momentary | |
4403 | breakpoint which has since been deleted. */ | |
4404 | bptype = bp_none; | |
4405 | } | |
f431efe5 | 4406 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4407 | bptype = bp_none; |
20874c92 | 4408 | else |
f431efe5 | 4409 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4410 | |
4411 | switch (bptype) | |
c906108c SS |
4412 | { |
4413 | case bp_none: | |
628fe4e4 | 4414 | break; |
c906108c SS |
4415 | case bp_breakpoint: |
4416 | case bp_hardware_breakpoint: | |
4417 | case bp_until: | |
4418 | case bp_finish: | |
4419 | if (bs->stop) | |
4420 | { | |
4421 | if (bs->print) | |
628fe4e4 | 4422 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4423 | else |
628fe4e4 | 4424 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4425 | } |
4426 | else | |
628fe4e4 | 4427 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4428 | break; |
4429 | case bp_watchpoint: | |
4430 | case bp_hardware_watchpoint: | |
4431 | case bp_read_watchpoint: | |
4432 | case bp_access_watchpoint: | |
4433 | if (bs->stop) | |
4434 | { | |
4435 | if (bs->print) | |
628fe4e4 | 4436 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4437 | else |
628fe4e4 | 4438 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4439 | } |
4440 | else | |
628fe4e4 JK |
4441 | { |
4442 | /* There was a watchpoint, but we're not stopping. | |
4443 | This requires no further action. */ | |
4444 | } | |
c906108c SS |
4445 | break; |
4446 | case bp_longjmp: | |
186c406b | 4447 | case bp_exception: |
628fe4e4 | 4448 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4449 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4450 | break; |
4451 | case bp_longjmp_resume: | |
186c406b | 4452 | case bp_exception_resume: |
628fe4e4 | 4453 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4454 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4455 | break; |
4456 | case bp_step_resume: | |
4457 | if (bs->stop) | |
628fe4e4 JK |
4458 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4459 | else | |
c906108c | 4460 | { |
628fe4e4 JK |
4461 | /* It is for the wrong frame. */ |
4462 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4463 | } |
c906108c | 4464 | break; |
c906108c | 4465 | case bp_watchpoint_scope: |
c4093a6a | 4466 | case bp_thread_event: |
1900040c | 4467 | case bp_overlay_event: |
0fd8e87f | 4468 | case bp_longjmp_master: |
aa7d318d | 4469 | case bp_std_terminate_master: |
186c406b | 4470 | case bp_exception_master: |
628fe4e4 | 4471 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4472 | break; |
ce78b96d | 4473 | case bp_catchpoint: |
c5aa993b JM |
4474 | if (bs->stop) |
4475 | { | |
4476 | if (bs->print) | |
628fe4e4 | 4477 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4478 | else |
628fe4e4 | 4479 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4480 | } |
4481 | else | |
628fe4e4 JK |
4482 | { |
4483 | /* There was a catchpoint, but we're not stopping. | |
4484 | This requires no further action. */ | |
4485 | } | |
4486 | break; | |
4487 | case bp_shlib_event: | |
4488 | shlib_event = 1; | |
4489 | ||
4490 | /* If requested, stop when the dynamic linker notifies GDB | |
4491 | of events. This allows the user to get control and place | |
4492 | breakpoints in initializer routines for dynamically | |
4493 | loaded objects (among other things). */ | |
4494 | if (stop_on_solib_events) | |
4495 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4496 | else | |
4497 | this_action = BPSTAT_WHAT_SINGLE; | |
4498 | break; | |
4499 | case bp_jit_event: | |
4500 | jit_event = 1; | |
4501 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4502 | break; |
c906108c | 4503 | case bp_call_dummy: |
53a5351d JM |
4504 | /* Make sure the action is stop (silent or noisy), |
4505 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4506 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4507 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4508 | break; |
4509 | case bp_std_terminate: | |
4510 | /* Make sure the action is stop (silent or noisy), | |
4511 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4512 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4513 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4514 | break; |
1042e4c0 | 4515 | case bp_tracepoint: |
7a697b8d | 4516 | case bp_fast_tracepoint: |
0fb4aa4b | 4517 | case bp_static_tracepoint: |
1042e4c0 SS |
4518 | /* Tracepoint hits should not be reported back to GDB, and |
4519 | if one got through somehow, it should have been filtered | |
4520 | out already. */ | |
4521 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4522 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4523 | break; |
4524 | case bp_gnu_ifunc_resolver: | |
4525 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4526 | this_action = BPSTAT_WHAT_SINGLE; | |
4527 | break; | |
4528 | case bp_gnu_ifunc_resolver_return: | |
4529 | /* The breakpoint will be removed, execution will restart from the | |
4530 | PC of the former breakpoint. */ | |
4531 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4532 | break; | |
628fe4e4 JK |
4533 | default: |
4534 | internal_error (__FILE__, __LINE__, | |
4535 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4536 | } |
628fe4e4 JK |
4537 | |
4538 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4539 | } |
628fe4e4 | 4540 | |
0e30163f JK |
4541 | /* These operations may affect the bs->breakpoint_at state so they are |
4542 | delayed after MAIN_ACTION is decided above. */ | |
4543 | ||
628fe4e4 JK |
4544 | if (shlib_event) |
4545 | { | |
4546 | if (debug_infrun) | |
4547 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4548 | ||
4549 | /* Check for any newly added shared libraries if we're supposed | |
4550 | to be adding them automatically. */ | |
4551 | ||
4552 | /* Switch terminal for any messages produced by | |
4553 | breakpoint_re_set. */ | |
4554 | target_terminal_ours_for_output (); | |
4555 | ||
4556 | #ifdef SOLIB_ADD | |
4557 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4558 | #else | |
4559 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4560 | #endif | |
4561 | ||
4562 | target_terminal_inferior (); | |
4563 | } | |
4564 | ||
4565 | if (jit_event) | |
4566 | { | |
4567 | if (debug_infrun) | |
4568 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4569 | ||
4570 | handle_jit_event (); | |
4571 | } | |
4572 | ||
0e30163f JK |
4573 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4574 | { | |
4575 | struct breakpoint *b = bs->breakpoint_at; | |
4576 | ||
4577 | if (b == NULL) | |
4578 | continue; | |
4579 | switch (b->type) | |
4580 | { | |
4581 | case bp_gnu_ifunc_resolver: | |
4582 | gnu_ifunc_resolver_stop (b); | |
4583 | break; | |
4584 | case bp_gnu_ifunc_resolver_return: | |
4585 | gnu_ifunc_resolver_return_stop (b); | |
4586 | break; | |
4587 | } | |
4588 | } | |
4589 | ||
c906108c SS |
4590 | return retval; |
4591 | } | |
4592 | ||
4593 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4594 | without hardware support). This isn't related to a specific bpstat, | |
4595 | just to things like whether watchpoints are set. */ | |
4596 | ||
c5aa993b | 4597 | int |
fba45db2 | 4598 | bpstat_should_step (void) |
c906108c SS |
4599 | { |
4600 | struct breakpoint *b; | |
cc59ec59 | 4601 | |
c906108c | 4602 | ALL_BREAKPOINTS (b) |
717a8278 | 4603 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4604 | return 1; |
c906108c SS |
4605 | return 0; |
4606 | } | |
4607 | ||
67822962 PA |
4608 | int |
4609 | bpstat_causes_stop (bpstat bs) | |
4610 | { | |
4611 | for (; bs != NULL; bs = bs->next) | |
4612 | if (bs->stop) | |
4613 | return 1; | |
4614 | ||
4615 | return 0; | |
4616 | } | |
4617 | ||
c906108c | 4618 | \f |
c5aa993b | 4619 | |
170b53b2 UW |
4620 | /* Compute a string of spaces suitable to indent the next line |
4621 | so it starts at the position corresponding to the table column | |
4622 | named COL_NAME in the currently active table of UIOUT. */ | |
4623 | ||
4624 | static char * | |
4625 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4626 | { | |
4627 | static char wrap_indent[80]; | |
4628 | int i, total_width, width, align; | |
4629 | char *text; | |
4630 | ||
4631 | total_width = 0; | |
4632 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4633 | { | |
4634 | if (strcmp (text, col_name) == 0) | |
4635 | { | |
4636 | gdb_assert (total_width < sizeof wrap_indent); | |
4637 | memset (wrap_indent, ' ', total_width); | |
4638 | wrap_indent[total_width] = 0; | |
4639 | ||
4640 | return wrap_indent; | |
4641 | } | |
4642 | ||
4643 | total_width += width + 1; | |
4644 | } | |
4645 | ||
4646 | return NULL; | |
4647 | } | |
4648 | ||
859825b8 JK |
4649 | /* Print the LOC location out of the list of B->LOC locations. */ |
4650 | ||
170b53b2 UW |
4651 | static void |
4652 | print_breakpoint_location (struct breakpoint *b, | |
4653 | struct bp_location *loc) | |
0d381245 | 4654 | { |
6c95b8df PA |
4655 | struct cleanup *old_chain = save_current_program_space (); |
4656 | ||
859825b8 JK |
4657 | if (loc != NULL && loc->shlib_disabled) |
4658 | loc = NULL; | |
4659 | ||
6c95b8df PA |
4660 | if (loc != NULL) |
4661 | set_current_program_space (loc->pspace); | |
4662 | ||
56435ebe TT |
4663 | if (b->display_canonical) |
4664 | ui_out_field_string (uiout, "what", b->addr_string); | |
4665 | else if (b->source_file && loc) | |
0d381245 VP |
4666 | { |
4667 | struct symbol *sym | |
4668 | = find_pc_sect_function (loc->address, loc->section); | |
4669 | if (sym) | |
4670 | { | |
4671 | ui_out_text (uiout, "in "); | |
4672 | ui_out_field_string (uiout, "func", | |
4673 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4674 | ui_out_text (uiout, " "); |
4675 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4676 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4677 | } |
4678 | ui_out_field_string (uiout, "file", b->source_file); | |
4679 | ui_out_text (uiout, ":"); | |
4680 | ||
4681 | if (ui_out_is_mi_like_p (uiout)) | |
4682 | { | |
4683 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4684 | char *fullname = symtab_to_fullname (sal.symtab); | |
4685 | ||
4686 | if (fullname) | |
4687 | ui_out_field_string (uiout, "fullname", fullname); | |
4688 | } | |
4689 | ||
4690 | ui_out_field_int (uiout, "line", b->line_number); | |
4691 | } | |
859825b8 | 4692 | else if (loc) |
0d381245 | 4693 | { |
170b53b2 UW |
4694 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4695 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4696 | ||
22e722e1 DJ |
4697 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4698 | demangle, ""); | |
0d381245 | 4699 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4700 | |
4701 | do_cleanups (stb_chain); | |
0d381245 | 4702 | } |
859825b8 JK |
4703 | else |
4704 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4705 | |
4706 | do_cleanups (old_chain); | |
0d381245 VP |
4707 | } |
4708 | ||
269b11a2 PA |
4709 | static const char * |
4710 | bptype_string (enum bptype type) | |
c906108c | 4711 | { |
c4093a6a JM |
4712 | struct ep_type_description |
4713 | { | |
4714 | enum bptype type; | |
4715 | char *description; | |
4716 | }; | |
4717 | static struct ep_type_description bptypes[] = | |
c906108c | 4718 | { |
c5aa993b JM |
4719 | {bp_none, "?deleted?"}, |
4720 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4721 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4722 | {bp_until, "until"}, |
4723 | {bp_finish, "finish"}, | |
4724 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4725 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4726 | {bp_read_watchpoint, "read watchpoint"}, |
4727 | {bp_access_watchpoint, "acc watchpoint"}, | |
4728 | {bp_longjmp, "longjmp"}, | |
4729 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4730 | {bp_exception, "exception"}, |
4731 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4732 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4733 | {bp_watchpoint_scope, "watchpoint scope"}, |
4734 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4735 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4736 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4737 | {bp_thread_event, "thread events"}, |
1900040c | 4738 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4739 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4740 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4741 | {bp_exception_master, "exception master"}, |
ce78b96d | 4742 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4743 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4744 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4745 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4746 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4747 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4748 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4749 | }; |
269b11a2 PA |
4750 | |
4751 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4752 | || ((int) type != bptypes[(int) type].type)) | |
4753 | internal_error (__FILE__, __LINE__, | |
4754 | _("bptypes table does not describe type #%d."), | |
4755 | (int) type); | |
4756 | ||
4757 | return bptypes[(int) type].description; | |
4758 | } | |
4759 | ||
4760 | /* Print B to gdb_stdout. */ | |
4761 | ||
4762 | static void | |
4763 | print_one_breakpoint_location (struct breakpoint *b, | |
4764 | struct bp_location *loc, | |
4765 | int loc_number, | |
4766 | struct bp_location **last_loc, | |
269b11a2 PA |
4767 | int allflag) |
4768 | { | |
4769 | struct command_line *l; | |
c2c6d25f | 4770 | static char bpenables[] = "nynny"; |
3b31d625 | 4771 | struct cleanup *bkpt_chain; |
c906108c | 4772 | |
0d381245 VP |
4773 | int header_of_multiple = 0; |
4774 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4775 | struct value_print_options opts; |
4776 | ||
4777 | get_user_print_options (&opts); | |
0d381245 VP |
4778 | |
4779 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4780 | /* See comment in print_one_breakpoint concerning treatment of |
4781 | breakpoints with single disabled location. */ | |
0d381245 VP |
4782 | if (loc == NULL |
4783 | && (b->loc != NULL | |
4784 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4785 | header_of_multiple = 1; | |
4786 | if (loc == NULL) | |
4787 | loc = b->loc; | |
4788 | ||
c4093a6a | 4789 | annotate_record (); |
3b31d625 | 4790 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4791 | |
4792 | /* 1 */ | |
4793 | annotate_field (0); | |
0d381245 VP |
4794 | if (part_of_multiple) |
4795 | { | |
4796 | char *formatted; | |
0c6773c1 | 4797 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4798 | ui_out_field_string (uiout, "number", formatted); |
4799 | xfree (formatted); | |
4800 | } | |
4801 | else | |
4802 | { | |
4803 | ui_out_field_int (uiout, "number", b->number); | |
4804 | } | |
c4093a6a JM |
4805 | |
4806 | /* 2 */ | |
4807 | annotate_field (1); | |
0d381245 VP |
4808 | if (part_of_multiple) |
4809 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4810 | else |
4811 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4812 | |
4813 | /* 3 */ | |
4814 | annotate_field (2); | |
0d381245 VP |
4815 | if (part_of_multiple) |
4816 | ui_out_field_skip (uiout, "disp"); | |
4817 | else | |
2cec12e5 | 4818 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4819 | |
c4093a6a JM |
4820 | |
4821 | /* 4 */ | |
4822 | annotate_field (3); | |
0d381245 | 4823 | if (part_of_multiple) |
54e52265 | 4824 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4825 | else |
4a64f543 MS |
4826 | ui_out_field_fmt (uiout, "enabled", "%c", |
4827 | bpenables[(int) b->enable_state]); | |
54e52265 | 4828 | ui_out_spaces (uiout, 2); |
0d381245 | 4829 | |
c4093a6a JM |
4830 | |
4831 | /* 5 and 6 */ | |
3086aeae | 4832 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4833 | { |
4a64f543 MS |
4834 | /* Although the print_one can possibly print all locations, |
4835 | calling it here is not likely to get any nice result. So, | |
4836 | make sure there's just one location. */ | |
0d381245 | 4837 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4838 | b->ops->print_one (b, last_loc); |
0d381245 | 4839 | } |
3086aeae DJ |
4840 | else |
4841 | switch (b->type) | |
4842 | { | |
4843 | case bp_none: | |
4844 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4845 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4846 | break; |
c906108c | 4847 | |
3086aeae DJ |
4848 | case bp_watchpoint: |
4849 | case bp_hardware_watchpoint: | |
4850 | case bp_read_watchpoint: | |
4851 | case bp_access_watchpoint: | |
4852 | /* Field 4, the address, is omitted (which makes the columns | |
4853 | not line up too nicely with the headers, but the effect | |
4854 | is relatively readable). */ | |
79a45b7d | 4855 | if (opts.addressprint) |
3086aeae DJ |
4856 | ui_out_field_skip (uiout, "addr"); |
4857 | annotate_field (5); | |
fa8a61dc | 4858 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4859 | break; |
4860 | ||
3086aeae DJ |
4861 | case bp_breakpoint: |
4862 | case bp_hardware_breakpoint: | |
4863 | case bp_until: | |
4864 | case bp_finish: | |
4865 | case bp_longjmp: | |
4866 | case bp_longjmp_resume: | |
186c406b TT |
4867 | case bp_exception: |
4868 | case bp_exception_resume: | |
3086aeae | 4869 | case bp_step_resume: |
3086aeae DJ |
4870 | case bp_watchpoint_scope: |
4871 | case bp_call_dummy: | |
aa7d318d | 4872 | case bp_std_terminate: |
3086aeae DJ |
4873 | case bp_shlib_event: |
4874 | case bp_thread_event: | |
4875 | case bp_overlay_event: | |
0fd8e87f | 4876 | case bp_longjmp_master: |
aa7d318d | 4877 | case bp_std_terminate_master: |
186c406b | 4878 | case bp_exception_master: |
1042e4c0 | 4879 | case bp_tracepoint: |
7a697b8d | 4880 | case bp_fast_tracepoint: |
0fb4aa4b | 4881 | case bp_static_tracepoint: |
4efc6507 | 4882 | case bp_jit_event: |
0e30163f JK |
4883 | case bp_gnu_ifunc_resolver: |
4884 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4885 | if (opts.addressprint) |
3086aeae DJ |
4886 | { |
4887 | annotate_field (4); | |
54e52265 | 4888 | if (header_of_multiple) |
0d381245 | 4889 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4890 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4891 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4892 | else |
5af949e3 UW |
4893 | ui_out_field_core_addr (uiout, "addr", |
4894 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4895 | } |
4896 | annotate_field (5); | |
0d381245 | 4897 | if (!header_of_multiple) |
170b53b2 | 4898 | print_breakpoint_location (b, loc); |
0d381245 | 4899 | if (b->loc) |
a6d9a66e | 4900 | *last_loc = b->loc; |
3086aeae DJ |
4901 | break; |
4902 | } | |
c906108c | 4903 | |
6c95b8df PA |
4904 | |
4905 | /* For backward compatibility, don't display inferiors unless there | |
4906 | are several. */ | |
4907 | if (loc != NULL | |
4908 | && !header_of_multiple | |
4909 | && (allflag | |
4910 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4911 | && (number_of_program_spaces () > 1 | |
4912 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4913 | /* LOC is for existing B, it cannot be in |
4914 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4915 | && loc->owner->type != bp_catchpoint))) |
4916 | { | |
4917 | struct inferior *inf; | |
4918 | int first = 1; | |
4919 | ||
4920 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4921 | { | |
4922 | if (inf->pspace == loc->pspace) | |
4923 | { | |
4924 | if (first) | |
4925 | { | |
4926 | first = 0; | |
4927 | ui_out_text (uiout, " inf "); | |
4928 | } | |
4929 | else | |
4930 | ui_out_text (uiout, ", "); | |
4931 | ui_out_text (uiout, plongest (inf->num)); | |
4932 | } | |
4933 | } | |
4934 | } | |
4935 | ||
4a306c9a | 4936 | if (!part_of_multiple) |
c4093a6a | 4937 | { |
4a306c9a JB |
4938 | if (b->thread != -1) |
4939 | { | |
4940 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4941 | "stop only in" line a little further down. */ |
4a306c9a JB |
4942 | ui_out_text (uiout, " thread "); |
4943 | ui_out_field_int (uiout, "thread", b->thread); | |
4944 | } | |
4945 | else if (b->task != 0) | |
4946 | { | |
4947 | ui_out_text (uiout, " task "); | |
4948 | ui_out_field_int (uiout, "task", b->task); | |
4949 | } | |
c4093a6a | 4950 | } |
f1310107 | 4951 | |
8b93c638 | 4952 | ui_out_text (uiout, "\n"); |
f1310107 TJB |
4953 | |
4954 | if (!part_of_multiple && b->ops && b->ops->print_one_detail) | |
4955 | b->ops->print_one_detail (b, uiout); | |
4956 | ||
0fb4aa4b PA |
4957 | if (!part_of_multiple && b->static_trace_marker_id) |
4958 | { | |
4959 | gdb_assert (b->type == bp_static_tracepoint); | |
4960 | ||
4961 | ui_out_text (uiout, "\tmarker id is "); | |
4962 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4963 | b->static_trace_marker_id); | |
4964 | ui_out_text (uiout, "\n"); | |
4965 | } | |
4966 | ||
0d381245 | 4967 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4968 | { |
4969 | annotate_field (6); | |
8b93c638 | 4970 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4971 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4972 | the frame ID. */ | |
5af949e3 UW |
4973 | ui_out_field_core_addr (uiout, "frame", |
4974 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4975 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4976 | } |
4977 | ||
0d381245 | 4978 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4979 | { |
f7f9143b JB |
4980 | /* We do not print the condition for Ada exception catchpoints |
4981 | because the condition is an internal implementation detail | |
4982 | that we do not want to expose to the user. */ | |
c4093a6a | 4983 | annotate_field (7); |
d77f58be | 4984 | if (is_tracepoint (b)) |
1042e4c0 SS |
4985 | ui_out_text (uiout, "\ttrace only if "); |
4986 | else | |
4987 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4988 | ui_out_field_string (uiout, "cond", b->cond_string); |
4989 | ui_out_text (uiout, "\n"); | |
4990 | } | |
4991 | ||
0d381245 | 4992 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4993 | { |
4a64f543 | 4994 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4995 | ui_out_text (uiout, "\tstop only in thread "); |
4996 | ui_out_field_int (uiout, "thread", b->thread); | |
4997 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4998 | } |
4999 | ||
63c715c6 | 5000 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 5001 | { |
4a64f543 | 5002 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5003 | if (ep_is_catchpoint (b)) |
5004 | ui_out_text (uiout, "\tcatchpoint"); | |
5005 | else | |
5006 | ui_out_text (uiout, "\tbreakpoint"); | |
5007 | ui_out_text (uiout, " already hit "); | |
5008 | ui_out_field_int (uiout, "times", b->hit_count); | |
5009 | if (b->hit_count == 1) | |
5010 | ui_out_text (uiout, " time\n"); | |
5011 | else | |
5012 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
5013 | } |
5014 | ||
4a64f543 MS |
5015 | /* Output the count also if it is zero, but only if this is mi. |
5016 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 5017 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 5018 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 5019 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 5020 | |
0d381245 | 5021 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
5022 | { |
5023 | annotate_field (8); | |
8b93c638 JM |
5024 | ui_out_text (uiout, "\tignore next "); |
5025 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
5026 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 5027 | } |
059fb39f | 5028 | |
9add0f1b | 5029 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 5030 | if (!part_of_multiple && l) |
c4093a6a | 5031 | { |
3b31d625 EZ |
5032 | struct cleanup *script_chain; |
5033 | ||
c4093a6a | 5034 | annotate_field (9); |
3b31d625 | 5035 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 5036 | print_command_lines (uiout, l, 4); |
3b31d625 | 5037 | do_cleanups (script_chain); |
c4093a6a | 5038 | } |
d24317b4 | 5039 | |
1042e4c0 SS |
5040 | if (!part_of_multiple && b->pass_count) |
5041 | { | |
5042 | annotate_field (10); | |
5043 | ui_out_text (uiout, "\tpass count "); | |
5044 | ui_out_field_int (uiout, "pass", b->pass_count); | |
5045 | ui_out_text (uiout, " \n"); | |
5046 | } | |
5047 | ||
d24317b4 VP |
5048 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
5049 | { | |
5050 | if (b->addr_string) | |
5051 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
5052 | else if (b->exp_string) | |
5053 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
5054 | } | |
5055 | ||
3b31d625 | 5056 | do_cleanups (bkpt_chain); |
c4093a6a | 5057 | } |
c5aa993b | 5058 | |
0d381245 VP |
5059 | static void |
5060 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5061 | struct bp_location **last_loc, |
6c95b8df | 5062 | int allflag) |
0d381245 | 5063 | { |
12c5a436 | 5064 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
0d381245 VP |
5065 | |
5066 | /* If this breakpoint has custom print function, | |
5067 | it's already printed. Otherwise, print individual | |
5068 | locations, if any. */ | |
5069 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5070 | { | |
4a64f543 MS |
5071 | /* If breakpoint has a single location that is disabled, we |
5072 | print it as if it had several locations, since otherwise it's | |
5073 | hard to represent "breakpoint enabled, location disabled" | |
5074 | situation. | |
5075 | ||
5076 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5077 | internally, that's not a property exposed to user. */ |
0d381245 | 5078 | if (b->loc |
a5606eee | 5079 | && !is_hardware_watchpoint (b) |
0d381245 | 5080 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 5081 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
5082 | { |
5083 | struct bp_location *loc; | |
5084 | int n = 1; | |
5085 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
12c5a436 | 5086 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
0d381245 VP |
5087 | } |
5088 | } | |
5089 | } | |
5090 | ||
a6d9a66e UW |
5091 | static int |
5092 | breakpoint_address_bits (struct breakpoint *b) | |
5093 | { | |
5094 | int print_address_bits = 0; | |
5095 | struct bp_location *loc; | |
5096 | ||
5097 | for (loc = b->loc; loc; loc = loc->next) | |
5098 | { | |
c7437ca6 PA |
5099 | int addr_bit; |
5100 | ||
5101 | /* Software watchpoints that aren't watching memory don't have | |
5102 | an address to print. */ | |
5103 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5104 | continue; | |
5105 | ||
5106 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5107 | if (addr_bit > print_address_bits) |
5108 | print_address_bits = addr_bit; | |
5109 | } | |
5110 | ||
5111 | return print_address_bits; | |
5112 | } | |
0d381245 | 5113 | |
c4093a6a JM |
5114 | struct captured_breakpoint_query_args |
5115 | { | |
5116 | int bnum; | |
5117 | }; | |
c5aa993b | 5118 | |
c4093a6a | 5119 | static int |
2b65245e | 5120 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5121 | { |
5122 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5123 | struct breakpoint *b; |
a6d9a66e | 5124 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5125 | |
c4093a6a JM |
5126 | ALL_BREAKPOINTS (b) |
5127 | { | |
5128 | if (args->bnum == b->number) | |
c5aa993b | 5129 | { |
12c5a436 | 5130 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5131 | return GDB_RC_OK; |
c5aa993b | 5132 | } |
c4093a6a JM |
5133 | } |
5134 | return GDB_RC_NONE; | |
5135 | } | |
c5aa993b | 5136 | |
c4093a6a | 5137 | enum gdb_rc |
4a64f543 MS |
5138 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5139 | char **error_message) | |
c4093a6a JM |
5140 | { |
5141 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5142 | |
c4093a6a JM |
5143 | args.bnum = bnum; |
5144 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5145 | an error. */ |
b0b13bb4 DJ |
5146 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5147 | error_message, RETURN_MASK_ALL) < 0) | |
5148 | return GDB_RC_FAIL; | |
5149 | else | |
5150 | return GDB_RC_OK; | |
c4093a6a | 5151 | } |
c5aa993b | 5152 | |
7f3b0473 | 5153 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4a64f543 | 5154 | catchpoints, et.al.). */ |
7f3b0473 AC |
5155 | |
5156 | static int | |
5157 | user_settable_breakpoint (const struct breakpoint *b) | |
5158 | { | |
5159 | return (b->type == bp_breakpoint | |
ce78b96d | 5160 | || b->type == bp_catchpoint |
7f3b0473 | 5161 | || b->type == bp_hardware_breakpoint |
d77f58be | 5162 | || is_tracepoint (b) |
0e30163f JK |
5163 | || is_watchpoint (b) |
5164 | || b->type == bp_gnu_ifunc_resolver); | |
7f3b0473 | 5165 | } |
4a64f543 | 5166 | |
09d682a4 TT |
5167 | /* Return true if this breakpoint was set by the user, false if it is |
5168 | internal or momentary. */ | |
5169 | ||
5170 | int | |
5171 | user_breakpoint_p (struct breakpoint *b) | |
5172 | { | |
5173 | return user_settable_breakpoint (b) && b->number > 0; | |
5174 | } | |
5175 | ||
7f3b0473 | 5176 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5177 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5178 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5179 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5180 | ones for which it returns non-zero. Return the total number of | |
5181 | breakpoints listed. */ | |
c906108c | 5182 | |
d77f58be | 5183 | static int |
e5a67952 | 5184 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5185 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5186 | { |
52f0bd74 | 5187 | struct breakpoint *b; |
a6d9a66e | 5188 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5189 | int nr_printable_breakpoints; |
3b31d625 | 5190 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5191 | struct value_print_options opts; |
a6d9a66e | 5192 | int print_address_bits = 0; |
269b11a2 PA |
5193 | int print_type_col_width = 14; |
5194 | ||
79a45b7d TT |
5195 | get_user_print_options (&opts); |
5196 | ||
4a64f543 MS |
5197 | /* Compute the number of rows in the table, as well as the size |
5198 | required for address fields. */ | |
7f3b0473 AC |
5199 | nr_printable_breakpoints = 0; |
5200 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5201 | { |
5202 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5203 | if (filter && !filter (b)) | |
5204 | continue; | |
5205 | ||
5206 | /* If we have an "args" string, it is a list of breakpoints to | |
5207 | accept. Skip the others. */ | |
5208 | if (args != NULL && *args != '\0') | |
5209 | { | |
5210 | if (allflag && parse_and_eval_long (args) != b->number) | |
5211 | continue; | |
5212 | if (!allflag && !number_is_in_list (args, b->number)) | |
5213 | continue; | |
5214 | } | |
269b11a2 | 5215 | |
e5a67952 MS |
5216 | if (allflag || user_breakpoint_p (b)) |
5217 | { | |
5218 | int addr_bit, type_len; | |
a6d9a66e | 5219 | |
e5a67952 MS |
5220 | addr_bit = breakpoint_address_bits (b); |
5221 | if (addr_bit > print_address_bits) | |
5222 | print_address_bits = addr_bit; | |
269b11a2 | 5223 | |
e5a67952 MS |
5224 | type_len = strlen (bptype_string (b->type)); |
5225 | if (type_len > print_type_col_width) | |
5226 | print_type_col_width = type_len; | |
5227 | ||
5228 | nr_printable_breakpoints++; | |
5229 | } | |
5230 | } | |
7f3b0473 | 5231 | |
79a45b7d | 5232 | if (opts.addressprint) |
3b31d625 | 5233 | bkpttbl_chain |
3e43a32a MS |
5234 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5235 | nr_printable_breakpoints, | |
3b31d625 | 5236 | "BreakpointTable"); |
8b93c638 | 5237 | else |
3b31d625 | 5238 | bkpttbl_chain |
3e43a32a MS |
5239 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5240 | nr_printable_breakpoints, | |
3b31d625 | 5241 | "BreakpointTable"); |
8b93c638 | 5242 | |
7f3b0473 | 5243 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5244 | annotate_breakpoints_headers (); |
5245 | if (nr_printable_breakpoints > 0) | |
5246 | annotate_field (0); | |
4a64f543 | 5247 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5248 | if (nr_printable_breakpoints > 0) |
5249 | annotate_field (1); | |
269b11a2 | 5250 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5251 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5252 | if (nr_printable_breakpoints > 0) |
5253 | annotate_field (2); | |
4a64f543 | 5254 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5255 | if (nr_printable_breakpoints > 0) |
5256 | annotate_field (3); | |
54e52265 | 5257 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5258 | if (opts.addressprint) |
e5a67952 MS |
5259 | { |
5260 | if (nr_printable_breakpoints > 0) | |
5261 | annotate_field (4); | |
5262 | if (print_address_bits <= 32) | |
5263 | ui_out_table_header (uiout, 10, ui_left, | |
5264 | "addr", "Address"); /* 5 */ | |
5265 | else | |
5266 | ui_out_table_header (uiout, 18, ui_left, | |
5267 | "addr", "Address"); /* 5 */ | |
5268 | } | |
d7faa9e7 AC |
5269 | if (nr_printable_breakpoints > 0) |
5270 | annotate_field (5); | |
5271 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5272 | ui_out_table_body (uiout); | |
5273 | if (nr_printable_breakpoints > 0) | |
5274 | annotate_breakpoints_table (); | |
7f3b0473 | 5275 | |
c4093a6a | 5276 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5277 | { |
5278 | QUIT; | |
5279 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5280 | if (filter && !filter (b)) | |
5281 | continue; | |
5282 | ||
5283 | /* If we have an "args" string, it is a list of breakpoints to | |
5284 | accept. Skip the others. */ | |
5285 | ||
5286 | if (args != NULL && *args != '\0') | |
5287 | { | |
5288 | if (allflag) /* maintenance info breakpoint */ | |
5289 | { | |
5290 | if (parse_and_eval_long (args) != b->number) | |
5291 | continue; | |
5292 | } | |
5293 | else /* all others */ | |
5294 | { | |
5295 | if (!number_is_in_list (args, b->number)) | |
5296 | continue; | |
5297 | } | |
5298 | } | |
5299 | /* We only print out user settable breakpoints unless the | |
5300 | allflag is set. */ | |
5301 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5302 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5303 | } |
5304 | ||
3b31d625 | 5305 | do_cleanups (bkpttbl_chain); |
698384cd | 5306 | |
7f3b0473 | 5307 | if (nr_printable_breakpoints == 0) |
c906108c | 5308 | { |
4a64f543 MS |
5309 | /* If there's a filter, let the caller decide how to report |
5310 | empty list. */ | |
d77f58be SS |
5311 | if (!filter) |
5312 | { | |
e5a67952 | 5313 | if (args == NULL || *args == '\0') |
d77f58be SS |
5314 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5315 | else | |
4a64f543 | 5316 | ui_out_message (uiout, 0, |
e5a67952 MS |
5317 | "No breakpoint or watchpoint matching '%s'.\n", |
5318 | args); | |
d77f58be | 5319 | } |
c906108c SS |
5320 | } |
5321 | else | |
c4093a6a | 5322 | { |
a6d9a66e UW |
5323 | if (last_loc && !server_command) |
5324 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5325 | } |
c906108c | 5326 | |
4a64f543 | 5327 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5328 | there have been breakpoints? */ |
c906108c | 5329 | annotate_breakpoints_table_end (); |
d77f58be SS |
5330 | |
5331 | return nr_printable_breakpoints; | |
c906108c SS |
5332 | } |
5333 | ||
ad443146 SS |
5334 | /* Display the value of default-collect in a way that is generally |
5335 | compatible with the breakpoint list. */ | |
5336 | ||
5337 | static void | |
5338 | default_collect_info (void) | |
5339 | { | |
5340 | /* If it has no value (which is frequently the case), say nothing; a | |
5341 | message like "No default-collect." gets in user's face when it's | |
5342 | not wanted. */ | |
5343 | if (!*default_collect) | |
5344 | return; | |
5345 | ||
5346 | /* The following phrase lines up nicely with per-tracepoint collect | |
5347 | actions. */ | |
5348 | ui_out_text (uiout, "default collect "); | |
5349 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5350 | ui_out_text (uiout, " \n"); | |
5351 | } | |
5352 | ||
c906108c | 5353 | static void |
e5a67952 | 5354 | breakpoints_info (char *args, int from_tty) |
c906108c | 5355 | { |
e5a67952 | 5356 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5357 | |
5358 | default_collect_info (); | |
d77f58be SS |
5359 | } |
5360 | ||
5361 | static void | |
e5a67952 | 5362 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5363 | { |
e5a67952 | 5364 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
d77f58be SS |
5365 | |
5366 | if (num_printed == 0) | |
5367 | { | |
e5a67952 | 5368 | if (args == NULL || *args == '\0') |
d77f58be SS |
5369 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5370 | else | |
e5a67952 | 5371 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5372 | } |
c906108c SS |
5373 | } |
5374 | ||
7a292a7a | 5375 | static void |
e5a67952 | 5376 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5377 | { |
e5a67952 | 5378 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5379 | |
5380 | default_collect_info (); | |
c906108c SS |
5381 | } |
5382 | ||
0d381245 | 5383 | static int |
714835d5 | 5384 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5385 | struct program_space *pspace, |
714835d5 | 5386 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5387 | { |
5388 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5389 | |
0d381245 VP |
5390 | for (; bl; bl = bl->next) |
5391 | { | |
6c95b8df PA |
5392 | if (bl->pspace == pspace |
5393 | && bl->address == pc | |
0d381245 VP |
5394 | && (!overlay_debugging || bl->section == section)) |
5395 | return 1; | |
5396 | } | |
5397 | return 0; | |
5398 | } | |
5399 | ||
6c95b8df PA |
5400 | /* Print a message describing any breakpoints set at PC. This |
5401 | concerns with logical breakpoints, so we match program spaces, not | |
5402 | address spaces. */ | |
c906108c SS |
5403 | |
5404 | static void | |
6c95b8df PA |
5405 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5406 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5407 | struct obj_section *section, int thread) |
c906108c | 5408 | { |
52f0bd74 AC |
5409 | int others = 0; |
5410 | struct breakpoint *b; | |
c906108c SS |
5411 | |
5412 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5413 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5414 | if (others > 0) |
5415 | { | |
a3f17187 AC |
5416 | if (others == 1) |
5417 | printf_filtered (_("Note: breakpoint ")); | |
5418 | else /* if (others == ???) */ | |
5419 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5420 | ALL_BREAKPOINTS (b) |
6c95b8df | 5421 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5422 | { |
5423 | others--; | |
5424 | printf_filtered ("%d", b->number); | |
5425 | if (b->thread == -1 && thread != -1) | |
5426 | printf_filtered (" (all threads)"); | |
5427 | else if (b->thread != -1) | |
5428 | printf_filtered (" (thread %d)", b->thread); | |
5429 | printf_filtered ("%s%s ", | |
059fb39f | 5430 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5431 | || b->enable_state == bp_call_disabled |
5432 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5433 | ? " (disabled)" |
5434 | : b->enable_state == bp_permanent | |
5435 | ? " (permanent)" | |
5436 | : ""), | |
5437 | (others > 1) ? "," | |
5438 | : ((others == 1) ? " and" : "")); | |
5439 | } | |
a3f17187 | 5440 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5441 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5442 | printf_filtered (".\n"); |
5443 | } | |
5444 | } | |
5445 | \f | |
5446 | /* Set the default place to put a breakpoint | |
5447 | for the `break' command with no arguments. */ | |
5448 | ||
5449 | void | |
6c95b8df PA |
5450 | set_default_breakpoint (int valid, struct program_space *pspace, |
5451 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5452 | int line) |
c906108c SS |
5453 | { |
5454 | default_breakpoint_valid = valid; | |
6c95b8df | 5455 | default_breakpoint_pspace = pspace; |
c906108c SS |
5456 | default_breakpoint_address = addr; |
5457 | default_breakpoint_symtab = symtab; | |
5458 | default_breakpoint_line = line; | |
5459 | } | |
5460 | ||
e4f237da KB |
5461 | /* Return true iff it is meaningful to use the address member of |
5462 | BPT. For some breakpoint types, the address member is irrelevant | |
5463 | and it makes no sense to attempt to compare it to other addresses | |
5464 | (or use it for any other purpose either). | |
5465 | ||
4a64f543 MS |
5466 | More specifically, each of the following breakpoint types will |
5467 | always have a zero valued address and we don't want to mark | |
5468 | breakpoints of any of these types to be a duplicate of an actual | |
5469 | breakpoint at address zero: | |
e4f237da KB |
5470 | |
5471 | bp_watchpoint | |
2d134ed3 PA |
5472 | bp_catchpoint |
5473 | ||
5474 | */ | |
e4f237da KB |
5475 | |
5476 | static int | |
5477 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5478 | { | |
5479 | enum bptype type = bpt->type; | |
5480 | ||
2d134ed3 PA |
5481 | return (type != bp_watchpoint && type != bp_catchpoint); |
5482 | } | |
5483 | ||
5484 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5485 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5486 | ||
5487 | static int | |
4a64f543 MS |
5488 | watchpoint_locations_match (struct bp_location *loc1, |
5489 | struct bp_location *loc2) | |
2d134ed3 | 5490 | { |
2bdf28a0 JK |
5491 | /* Both of them must not be in moribund_locations. */ |
5492 | gdb_assert (loc1->owner != NULL); | |
5493 | gdb_assert (loc2->owner != NULL); | |
5494 | ||
4a64f543 MS |
5495 | /* If the target can evaluate the condition expression in hardware, |
5496 | then we we need to insert both watchpoints even if they are at | |
5497 | the same place. Otherwise the watchpoint will only trigger when | |
5498 | the condition of whichever watchpoint was inserted evaluates to | |
5499 | true, not giving a chance for GDB to check the condition of the | |
5500 | other watchpoint. */ | |
0cf6dd15 | 5501 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5502 | && target_can_accel_watchpoint_condition (loc1->address, |
5503 | loc1->length, | |
0cf6dd15 TJB |
5504 | loc1->watchpoint_type, |
5505 | loc1->owner->cond_exp)) | |
5506 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5507 | && target_can_accel_watchpoint_condition (loc2->address, |
5508 | loc2->length, | |
0cf6dd15 TJB |
5509 | loc2->watchpoint_type, |
5510 | loc2->owner->cond_exp))) | |
5511 | return 0; | |
5512 | ||
85d721b8 PA |
5513 | /* Note that this checks the owner's type, not the location's. In |
5514 | case the target does not support read watchpoints, but does | |
5515 | support access watchpoints, we'll have bp_read_watchpoint | |
5516 | watchpoints with hw_access locations. Those should be considered | |
5517 | duplicates of hw_read locations. The hw_read locations will | |
5518 | become hw_access locations later. */ | |
2d134ed3 PA |
5519 | return (loc1->owner->type == loc2->owner->type |
5520 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5521 | && loc1->address == loc2->address | |
5522 | && loc1->length == loc2->length); | |
e4f237da KB |
5523 | } |
5524 | ||
6c95b8df PA |
5525 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5526 | same breakpoint location. In most targets, this can only be true | |
5527 | if ASPACE1 matches ASPACE2. On targets that have global | |
5528 | breakpoints, the address space doesn't really matter. */ | |
5529 | ||
5530 | static int | |
5531 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5532 | struct address_space *aspace2, CORE_ADDR addr2) | |
5533 | { | |
5534 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5535 | || aspace1 == aspace2) | |
5536 | && addr1 == addr2); | |
5537 | } | |
5538 | ||
f1310107 TJB |
5539 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5540 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5541 | matches ASPACE2. On targets that have global breakpoints, the address | |
5542 | space doesn't really matter. */ | |
5543 | ||
5544 | static int | |
5545 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5546 | int len1, struct address_space *aspace2, | |
5547 | CORE_ADDR addr2) | |
5548 | { | |
5549 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5550 | || aspace1 == aspace2) | |
5551 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5552 | } | |
5553 | ||
5554 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5555 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5556 | matches the breakpoint's address space. On targets that have global | |
5557 | breakpoints, the address space doesn't really matter. */ | |
5558 | ||
5559 | static int | |
5560 | breakpoint_location_address_match (struct bp_location *bl, | |
5561 | struct address_space *aspace, | |
5562 | CORE_ADDR addr) | |
5563 | { | |
5564 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5565 | aspace, addr) | |
5566 | || (bl->length | |
5567 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5568 | bl->address, bl->length, | |
5569 | aspace, addr))); | |
5570 | } | |
5571 | ||
2d134ed3 PA |
5572 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5573 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5574 | represent the same location. */ | |
5575 | ||
5576 | static int | |
4a64f543 MS |
5577 | breakpoint_locations_match (struct bp_location *loc1, |
5578 | struct bp_location *loc2) | |
2d134ed3 | 5579 | { |
2bdf28a0 JK |
5580 | int hw_point1, hw_point2; |
5581 | ||
5582 | /* Both of them must not be in moribund_locations. */ | |
5583 | gdb_assert (loc1->owner != NULL); | |
5584 | gdb_assert (loc2->owner != NULL); | |
5585 | ||
5586 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5587 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5588 | |
5589 | if (hw_point1 != hw_point2) | |
5590 | return 0; | |
5591 | else if (hw_point1) | |
5592 | return watchpoint_locations_match (loc1, loc2); | |
5593 | else | |
f1310107 TJB |
5594 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5595 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5596 | loc2->pspace->aspace, loc2->address) | |
5597 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5598 | } |
5599 | ||
76897487 KB |
5600 | static void |
5601 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5602 | int bnum, int have_bnum) | |
5603 | { | |
f63fbe86 MS |
5604 | /* The longest string possibly returned by hex_string_custom |
5605 | is 50 chars. These must be at least that big for safety. */ | |
5606 | char astr1[64]; | |
5607 | char astr2[64]; | |
76897487 | 5608 | |
bb599908 PH |
5609 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5610 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5611 | if (have_bnum) |
8a3fe4f8 | 5612 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5613 | bnum, astr1, astr2); |
5614 | else | |
8a3fe4f8 | 5615 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5616 | } |
5617 | ||
4a64f543 MS |
5618 | /* Adjust a breakpoint's address to account for architectural |
5619 | constraints on breakpoint placement. Return the adjusted address. | |
5620 | Note: Very few targets require this kind of adjustment. For most | |
5621 | targets, this function is simply the identity function. */ | |
76897487 KB |
5622 | |
5623 | static CORE_ADDR | |
a6d9a66e UW |
5624 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5625 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5626 | { |
a6d9a66e | 5627 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5628 | { |
5629 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5630 | return bpaddr; | |
5631 | } | |
88f7da05 KB |
5632 | else if (bptype == bp_watchpoint |
5633 | || bptype == bp_hardware_watchpoint | |
5634 | || bptype == bp_read_watchpoint | |
5635 | || bptype == bp_access_watchpoint | |
fe798b75 | 5636 | || bptype == bp_catchpoint) |
88f7da05 KB |
5637 | { |
5638 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5639 | have their addresses modified. */ | |
5640 | return bpaddr; | |
5641 | } | |
76897487 KB |
5642 | else |
5643 | { | |
5644 | CORE_ADDR adjusted_bpaddr; | |
5645 | ||
5646 | /* Some targets have architectural constraints on the placement | |
5647 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5648 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5649 | |
5650 | /* An adjusted breakpoint address can significantly alter | |
5651 | a user's expectations. Print a warning if an adjustment | |
5652 | is required. */ | |
5653 | if (adjusted_bpaddr != bpaddr) | |
5654 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5655 | ||
5656 | return adjusted_bpaddr; | |
5657 | } | |
5658 | } | |
5659 | ||
7cc221ef DJ |
5660 | /* Allocate a struct bp_location. */ |
5661 | ||
26bb91f3 | 5662 | static struct bp_location * |
39d61571 | 5663 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5664 | { |
afe38095 | 5665 | struct bp_location *loc; |
7cc221ef DJ |
5666 | |
5667 | loc = xmalloc (sizeof (struct bp_location)); | |
5668 | memset (loc, 0, sizeof (*loc)); | |
5669 | ||
e049a4b5 | 5670 | loc->owner = bpt; |
511a6cd4 | 5671 | loc->cond = NULL; |
0d381245 VP |
5672 | loc->shlib_disabled = 0; |
5673 | loc->enabled = 1; | |
e049a4b5 | 5674 | |
39d61571 | 5675 | switch (bpt->type) |
e049a4b5 DJ |
5676 | { |
5677 | case bp_breakpoint: | |
5678 | case bp_until: | |
5679 | case bp_finish: | |
5680 | case bp_longjmp: | |
5681 | case bp_longjmp_resume: | |
186c406b TT |
5682 | case bp_exception: |
5683 | case bp_exception_resume: | |
e049a4b5 | 5684 | case bp_step_resume: |
e049a4b5 DJ |
5685 | case bp_watchpoint_scope: |
5686 | case bp_call_dummy: | |
aa7d318d | 5687 | case bp_std_terminate: |
e049a4b5 DJ |
5688 | case bp_shlib_event: |
5689 | case bp_thread_event: | |
5690 | case bp_overlay_event: | |
4efc6507 | 5691 | case bp_jit_event: |
0fd8e87f | 5692 | case bp_longjmp_master: |
aa7d318d | 5693 | case bp_std_terminate_master: |
186c406b | 5694 | case bp_exception_master: |
0e30163f JK |
5695 | case bp_gnu_ifunc_resolver: |
5696 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5697 | loc->loc_type = bp_loc_software_breakpoint; |
5698 | break; | |
5699 | case bp_hardware_breakpoint: | |
5700 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5701 | break; | |
5702 | case bp_hardware_watchpoint: | |
5703 | case bp_read_watchpoint: | |
5704 | case bp_access_watchpoint: | |
5705 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5706 | break; | |
5707 | case bp_watchpoint: | |
ce78b96d | 5708 | case bp_catchpoint: |
15c3d785 PA |
5709 | case bp_tracepoint: |
5710 | case bp_fast_tracepoint: | |
0fb4aa4b | 5711 | case bp_static_tracepoint: |
e049a4b5 DJ |
5712 | loc->loc_type = bp_loc_other; |
5713 | break; | |
5714 | default: | |
e2e0b3e5 | 5715 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5716 | } |
5717 | ||
f431efe5 | 5718 | loc->refc = 1; |
7cc221ef DJ |
5719 | return loc; |
5720 | } | |
5721 | ||
f431efe5 PA |
5722 | static void |
5723 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5724 | { |
5725 | if (loc->cond) | |
5726 | xfree (loc->cond); | |
74960c60 VP |
5727 | |
5728 | if (loc->function_name) | |
5729 | xfree (loc->function_name); | |
f431efe5 | 5730 | |
fe3f5fa8 VP |
5731 | xfree (loc); |
5732 | } | |
5733 | ||
f431efe5 PA |
5734 | /* Increment reference count. */ |
5735 | ||
5736 | static void | |
5737 | incref_bp_location (struct bp_location *bl) | |
5738 | { | |
5739 | ++bl->refc; | |
5740 | } | |
5741 | ||
5742 | /* Decrement reference count. If the reference count reaches 0, | |
5743 | destroy the bp_location. Sets *BLP to NULL. */ | |
5744 | ||
5745 | static void | |
5746 | decref_bp_location (struct bp_location **blp) | |
5747 | { | |
0807b50c PA |
5748 | gdb_assert ((*blp)->refc > 0); |
5749 | ||
f431efe5 PA |
5750 | if (--(*blp)->refc == 0) |
5751 | free_bp_location (*blp); | |
5752 | *blp = NULL; | |
5753 | } | |
5754 | ||
4a64f543 MS |
5755 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5756 | type BPTYPE and has no locations as yet. */ | |
5757 | /* This function is used in gdbtk sources and thus can not be made | |
5758 | static. */ | |
c906108c | 5759 | |
c40e75cd | 5760 | static struct breakpoint * |
a6d9a66e UW |
5761 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5762 | enum bptype bptype) | |
c906108c | 5763 | { |
52f0bd74 | 5764 | struct breakpoint *b, *b1; |
c906108c SS |
5765 | |
5766 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5767 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5768 | |
4d28f7a8 | 5769 | b->type = bptype; |
a6d9a66e | 5770 | b->gdbarch = gdbarch; |
c906108c SS |
5771 | b->language = current_language->la_language; |
5772 | b->input_radix = input_radix; | |
5773 | b->thread = -1; | |
b5de0fa7 | 5774 | b->enable_state = bp_enabled; |
c906108c SS |
5775 | b->next = 0; |
5776 | b->silent = 0; | |
5777 | b->ignore_count = 0; | |
5778 | b->commands = NULL; | |
818dd999 | 5779 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5780 | b->forked_inferior_pid = null_ptid; |
c906108c | 5781 | b->exec_pathname = NULL; |
a96d9b2e | 5782 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5783 | b->ops = NULL; |
0d381245 | 5784 | b->condition_not_parsed = 0; |
84f4c1fe | 5785 | b->py_bp_object = NULL; |
d0fb5eae | 5786 | b->related_breakpoint = b; |
c906108c | 5787 | |
4a64f543 MS |
5788 | /* Add this breakpoint to the end of the chain so that a list of |
5789 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5790 | |
5791 | b1 = breakpoint_chain; | |
5792 | if (b1 == 0) | |
5793 | breakpoint_chain = b; | |
5794 | else | |
5795 | { | |
5796 | while (b1->next) | |
5797 | b1 = b1->next; | |
5798 | b1->next = b; | |
5799 | } | |
0d381245 VP |
5800 | return b; |
5801 | } | |
5802 | ||
0e30163f JK |
5803 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5804 | resolutions should be made as the user specified the location explicitly | |
5805 | enough. */ | |
5806 | ||
0d381245 | 5807 | static void |
0e30163f | 5808 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5809 | { |
2bdf28a0 JK |
5810 | gdb_assert (loc->owner != NULL); |
5811 | ||
0d381245 | 5812 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5813 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5814 | || is_tracepoint (loc->owner)) |
0d381245 | 5815 | { |
0e30163f JK |
5816 | int is_gnu_ifunc; |
5817 | ||
5818 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5819 | NULL, NULL, &is_gnu_ifunc); | |
5820 | ||
5821 | if (is_gnu_ifunc && !explicit_loc) | |
5822 | { | |
5823 | struct breakpoint *b = loc->owner; | |
5824 | ||
5825 | gdb_assert (loc->pspace == current_program_space); | |
5826 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5827 | &loc->requested_address)) | |
5828 | { | |
5829 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5830 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5831 | loc->requested_address, | |
5832 | b->type); | |
5833 | } | |
5834 | else if (b->type == bp_breakpoint && b->loc == loc | |
5835 | && loc->next == NULL && b->related_breakpoint == b) | |
5836 | { | |
5837 | /* Create only the whole new breakpoint of this type but do not | |
5838 | mess more complicated breakpoints with multiple locations. */ | |
5839 | b->type = bp_gnu_ifunc_resolver; | |
5840 | } | |
5841 | } | |
5842 | ||
0d381245 VP |
5843 | if (loc->function_name) |
5844 | loc->function_name = xstrdup (loc->function_name); | |
5845 | } | |
5846 | } | |
5847 | ||
a6d9a66e UW |
5848 | /* Attempt to determine architecture of location identified by SAL. */ |
5849 | static struct gdbarch * | |
5850 | get_sal_arch (struct symtab_and_line sal) | |
5851 | { | |
5852 | if (sal.section) | |
5853 | return get_objfile_arch (sal.section->objfile); | |
5854 | if (sal.symtab) | |
5855 | return get_objfile_arch (sal.symtab->objfile); | |
5856 | ||
5857 | return NULL; | |
5858 | } | |
5859 | ||
0d381245 VP |
5860 | /* set_raw_breakpoint is a low level routine for allocating and |
5861 | partially initializing a breakpoint of type BPTYPE. The newly | |
5862 | created breakpoint's address, section, source file name, and line | |
5863 | number are provided by SAL. The newly created and partially | |
5864 | initialized breakpoint is added to the breakpoint chain and | |
5865 | is also returned as the value of this function. | |
5866 | ||
5867 | It is expected that the caller will complete the initialization of | |
5868 | the newly created breakpoint struct as well as output any status | |
5869 | information regarding the creation of a new breakpoint. In | |
5870 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5871 | number! Care should be taken to not allow an error to occur | |
5872 | prior to completing the initialization of the breakpoint. If this | |
5873 | should happen, a bogus breakpoint will be left on the chain. */ | |
5874 | ||
63c252f8 | 5875 | struct breakpoint * |
a6d9a66e UW |
5876 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5877 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5878 | { |
4a64f543 MS |
5879 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5880 | bptype); | |
0d381245 | 5881 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5882 | struct gdbarch *loc_gdbarch; |
5883 | ||
5884 | loc_gdbarch = get_sal_arch (sal); | |
5885 | if (!loc_gdbarch) | |
5886 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5887 | |
6c95b8df PA |
5888 | if (bptype != bp_catchpoint) |
5889 | gdb_assert (sal.pspace != NULL); | |
5890 | ||
0d381245 VP |
5891 | /* Adjust the breakpoint's address prior to allocating a location. |
5892 | Once we call allocate_bp_location(), that mostly uninitialized | |
5893 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5894 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5895 | not want its scan of the location chain to find a breakpoint and |
5896 | location that's only been partially initialized. */ | |
4a64f543 MS |
5897 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5898 | sal.pc, b->type); | |
0d381245 | 5899 | |
39d61571 | 5900 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5901 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5902 | b->loc->requested_address = sal.pc; |
5903 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5904 | b->loc->pspace = sal.pspace; |
5905 | ||
5906 | /* Store the program space that was used to set the breakpoint, for | |
5907 | breakpoint resetting. */ | |
5908 | b->pspace = sal.pspace; | |
0d381245 VP |
5909 | |
5910 | if (sal.symtab == NULL) | |
5911 | b->source_file = NULL; | |
5912 | else | |
1b36a34b | 5913 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5914 | b->loc->section = sal.section; |
5915 | b->line_number = sal.line; | |
5916 | ||
0e30163f JK |
5917 | set_breakpoint_location_function (b->loc, |
5918 | sal.explicit_pc || sal.explicit_line); | |
c906108c | 5919 | |
c906108c SS |
5920 | breakpoints_changed (); |
5921 | ||
5922 | return b; | |
5923 | } | |
5924 | ||
c2c6d25f JM |
5925 | |
5926 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5927 | instruction, hard-wired into the inferior's code. */ | |
5928 | void | |
5929 | make_breakpoint_permanent (struct breakpoint *b) | |
5930 | { | |
0d381245 | 5931 | struct bp_location *bl; |
cc59ec59 | 5932 | |
b5de0fa7 | 5933 | b->enable_state = bp_permanent; |
c2c6d25f | 5934 | |
4a64f543 MS |
5935 | /* By definition, permanent breakpoints are already present in the |
5936 | code. Mark all locations as inserted. For now, | |
5937 | make_breakpoint_permanent is called in just one place, so it's | |
5938 | hard to say if it's reasonable to have permanent breakpoint with | |
5939 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5940 | for (bl = b->loc; bl; bl = bl->next) |
5941 | bl->inserted = 1; | |
c2c6d25f JM |
5942 | } |
5943 | ||
53a5351d | 5944 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5945 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5946 | initiated the operation. */ | |
c906108c SS |
5947 | |
5948 | void | |
186c406b | 5949 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5950 | { |
35df4500 | 5951 | struct breakpoint *b, *b_tmp; |
186c406b | 5952 | int thread = tp->num; |
0fd8e87f UW |
5953 | |
5954 | /* To avoid having to rescan all objfile symbols at every step, | |
5955 | we maintain a list of continually-inserted but always disabled | |
5956 | longjmp "master" breakpoints. Here, we simply create momentary | |
5957 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5958 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5959 | if (b->pspace == current_program_space |
186c406b TT |
5960 | && (b->type == bp_longjmp_master |
5961 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5962 | { |
5963 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5964 | |
186c406b | 5965 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5966 | clone->thread = thread; |
5967 | } | |
186c406b TT |
5968 | |
5969 | tp->initiating_frame = frame; | |
c906108c SS |
5970 | } |
5971 | ||
611c83ae | 5972 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5973 | void |
611c83ae | 5974 | delete_longjmp_breakpoint (int thread) |
c906108c | 5975 | { |
35df4500 | 5976 | struct breakpoint *b, *b_tmp; |
c906108c | 5977 | |
35df4500 | 5978 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5979 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5980 | { |
5981 | if (b->thread == thread) | |
5982 | delete_breakpoint (b); | |
5983 | } | |
c906108c SS |
5984 | } |
5985 | ||
1900040c MS |
5986 | void |
5987 | enable_overlay_breakpoints (void) | |
5988 | { | |
52f0bd74 | 5989 | struct breakpoint *b; |
1900040c MS |
5990 | |
5991 | ALL_BREAKPOINTS (b) | |
5992 | if (b->type == bp_overlay_event) | |
5993 | { | |
5994 | b->enable_state = bp_enabled; | |
b60e7edf | 5995 | update_global_location_list (1); |
c02f5703 | 5996 | overlay_events_enabled = 1; |
1900040c MS |
5997 | } |
5998 | } | |
5999 | ||
6000 | void | |
6001 | disable_overlay_breakpoints (void) | |
6002 | { | |
52f0bd74 | 6003 | struct breakpoint *b; |
1900040c MS |
6004 | |
6005 | ALL_BREAKPOINTS (b) | |
6006 | if (b->type == bp_overlay_event) | |
6007 | { | |
6008 | b->enable_state = bp_disabled; | |
b60e7edf | 6009 | update_global_location_list (0); |
c02f5703 | 6010 | overlay_events_enabled = 0; |
1900040c MS |
6011 | } |
6012 | } | |
6013 | ||
aa7d318d TT |
6014 | /* Set an active std::terminate breakpoint for each std::terminate |
6015 | master breakpoint. */ | |
6016 | void | |
6017 | set_std_terminate_breakpoint (void) | |
6018 | { | |
35df4500 | 6019 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6020 | |
35df4500 | 6021 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6022 | if (b->pspace == current_program_space |
6023 | && b->type == bp_std_terminate_master) | |
6024 | { | |
6025 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
6026 | clone->type = bp_std_terminate; | |
6027 | } | |
6028 | } | |
6029 | ||
6030 | /* Delete all the std::terminate breakpoints. */ | |
6031 | void | |
6032 | delete_std_terminate_breakpoint (void) | |
6033 | { | |
35df4500 | 6034 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6035 | |
35df4500 | 6036 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6037 | if (b->type == bp_std_terminate) |
6038 | delete_breakpoint (b); | |
6039 | } | |
6040 | ||
c4093a6a | 6041 | struct breakpoint * |
a6d9a66e | 6042 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6043 | { |
6044 | struct breakpoint *b; | |
c4093a6a | 6045 | |
a6d9a66e | 6046 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 6047 | |
b5de0fa7 | 6048 | b->enable_state = bp_enabled; |
c4093a6a | 6049 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6050 | b->addr_string |
6051 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6052 | |
b60e7edf | 6053 | update_global_location_list_nothrow (1); |
74960c60 | 6054 | |
c4093a6a JM |
6055 | return b; |
6056 | } | |
6057 | ||
6058 | void | |
6059 | remove_thread_event_breakpoints (void) | |
6060 | { | |
35df4500 | 6061 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6062 | |
35df4500 | 6063 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6064 | if (b->type == bp_thread_event |
6065 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6066 | delete_breakpoint (b); |
6067 | } | |
6068 | ||
0101ce28 JJ |
6069 | struct lang_and_radix |
6070 | { | |
6071 | enum language lang; | |
6072 | int radix; | |
6073 | }; | |
6074 | ||
4efc6507 DE |
6075 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6076 | ||
6077 | struct breakpoint * | |
6078 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6079 | { | |
6080 | struct breakpoint *b; | |
6081 | ||
6082 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
6083 | update_global_location_list_nothrow (1); | |
6084 | return b; | |
6085 | } | |
0101ce28 | 6086 | |
03673fc7 PP |
6087 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6088 | ||
6089 | void | |
6090 | remove_jit_event_breakpoints (void) | |
6091 | { | |
6092 | struct breakpoint *b, *b_tmp; | |
6093 | ||
6094 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6095 | if (b->type == bp_jit_event | |
6096 | && b->loc->pspace == current_program_space) | |
6097 | delete_breakpoint (b); | |
6098 | } | |
6099 | ||
cae688ec JJ |
6100 | void |
6101 | remove_solib_event_breakpoints (void) | |
6102 | { | |
35df4500 | 6103 | struct breakpoint *b, *b_tmp; |
cae688ec | 6104 | |
35df4500 | 6105 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6106 | if (b->type == bp_shlib_event |
6107 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6108 | delete_breakpoint (b); |
6109 | } | |
6110 | ||
6111 | struct breakpoint * | |
a6d9a66e | 6112 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6113 | { |
6114 | struct breakpoint *b; | |
6115 | ||
a6d9a66e | 6116 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 6117 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6118 | return b; |
6119 | } | |
6120 | ||
6121 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6122 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6123 | ||
6124 | void | |
cb851954 | 6125 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6126 | { |
876fa593 | 6127 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6128 | |
876fa593 | 6129 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6130 | { |
2bdf28a0 | 6131 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6132 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6133 | |
4a64f543 MS |
6134 | /* We apply the check to all breakpoints, including disabled for |
6135 | those with loc->duplicate set. This is so that when breakpoint | |
6136 | becomes enabled, or the duplicate is removed, gdb will try to | |
6137 | insert all breakpoints. If we don't set shlib_disabled here, | |
6138 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6139 | if (((b->type == bp_breakpoint) |
508ccb1f | 6140 | || (b->type == bp_jit_event) |
1042e4c0 | 6141 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6142 | || (is_tracepoint (b))) |
6c95b8df | 6143 | && loc->pspace == current_program_space |
0d381245 | 6144 | && !loc->shlib_disabled |
a77053c2 | 6145 | #ifdef PC_SOLIB |
0d381245 | 6146 | && PC_SOLIB (loc->address) |
a77053c2 | 6147 | #else |
6c95b8df | 6148 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6149 | #endif |
6150 | ) | |
0d381245 VP |
6151 | { |
6152 | loc->shlib_disabled = 1; | |
6153 | } | |
cae688ec JJ |
6154 | } |
6155 | } | |
6156 | ||
4a64f543 MS |
6157 | /* Disable any breakpoints that are in in an unloaded shared library. |
6158 | Only apply to enabled breakpoints, disabled ones can just stay | |
6159 | disabled. */ | |
84acb35a | 6160 | |
75149521 | 6161 | static void |
84acb35a JJ |
6162 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6163 | { | |
876fa593 | 6164 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6165 | int disabled_shlib_breaks = 0; |
6166 | ||
c86cf029 VP |
6167 | /* SunOS a.out shared libraries are always mapped, so do not |
6168 | disable breakpoints; they will only be reported as unloaded | |
6169 | through clear_solib when GDB discards its shared library | |
6170 | list. See clear_solib for more information. */ | |
6171 | if (exec_bfd != NULL | |
6172 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6173 | return; | |
6174 | ||
876fa593 | 6175 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6176 | { |
2bdf28a0 | 6177 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6178 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6179 | |
0d381245 VP |
6180 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
6181 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 6182 | && solib->pspace == loc->pspace |
e2dd7057 | 6183 | && !loc->shlib_disabled |
508ccb1f TT |
6184 | && (b->type == bp_breakpoint |
6185 | || b->type == bp_jit_event | |
6186 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 6187 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6188 | { |
e2dd7057 PP |
6189 | loc->shlib_disabled = 1; |
6190 | /* At this point, we cannot rely on remove_breakpoint | |
6191 | succeeding so we must mark the breakpoint as not inserted | |
6192 | to prevent future errors occurring in remove_breakpoints. */ | |
6193 | loc->inserted = 0; | |
6194 | if (!disabled_shlib_breaks) | |
6195 | { | |
6196 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6197 | warning (_("Temporarily disabling breakpoints " |
6198 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6199 | solib->so_name); |
84acb35a | 6200 | } |
e2dd7057 | 6201 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6202 | } |
6203 | } | |
84acb35a JJ |
6204 | } |
6205 | ||
ce78b96d JB |
6206 | /* FORK & VFORK catchpoints. */ |
6207 | ||
4a64f543 MS |
6208 | /* Implement the "insert" breakpoint_ops method for fork |
6209 | catchpoints. */ | |
ce78b96d | 6210 | |
77b06cd7 TJB |
6211 | static int |
6212 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6213 | { |
77b06cd7 | 6214 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6215 | } |
6216 | ||
4a64f543 MS |
6217 | /* Implement the "remove" breakpoint_ops method for fork |
6218 | catchpoints. */ | |
ce78b96d JB |
6219 | |
6220 | static int | |
77b06cd7 | 6221 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6222 | { |
6223 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6224 | } | |
6225 | ||
6226 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6227 | catchpoints. */ | |
6228 | ||
6229 | static int | |
f1310107 TJB |
6230 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6231 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6232 | { |
f1310107 | 6233 | return inferior_has_forked (inferior_ptid, &bl->owner->forked_inferior_pid); |
ce78b96d JB |
6234 | } |
6235 | ||
4a64f543 MS |
6236 | /* Implement the "print_it" breakpoint_ops method for fork |
6237 | catchpoints. */ | |
ce78b96d JB |
6238 | |
6239 | static enum print_stop_action | |
6240 | print_it_catch_fork (struct breakpoint *b) | |
6241 | { | |
6242 | annotate_catchpoint (b->number); | |
6243 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6244 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6245 | return PRINT_SRC_AND_LOC; | |
6246 | } | |
6247 | ||
4a64f543 MS |
6248 | /* Implement the "print_one" breakpoint_ops method for fork |
6249 | catchpoints. */ | |
ce78b96d JB |
6250 | |
6251 | static void | |
a6d9a66e | 6252 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6253 | { |
79a45b7d TT |
6254 | struct value_print_options opts; |
6255 | ||
6256 | get_user_print_options (&opts); | |
6257 | ||
4a64f543 MS |
6258 | /* Field 4, the address, is omitted (which makes the columns not |
6259 | line up too nicely with the headers, but the effect is relatively | |
6260 | readable). */ | |
79a45b7d | 6261 | if (opts.addressprint) |
ce78b96d JB |
6262 | ui_out_field_skip (uiout, "addr"); |
6263 | annotate_field (5); | |
6264 | ui_out_text (uiout, "fork"); | |
6265 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6266 | { | |
6267 | ui_out_text (uiout, ", process "); | |
6268 | ui_out_field_int (uiout, "what", | |
6269 | ptid_get_pid (b->forked_inferior_pid)); | |
6270 | ui_out_spaces (uiout, 1); | |
6271 | } | |
6272 | } | |
6273 | ||
6274 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6275 | catchpoints. */ | |
6276 | ||
6277 | static void | |
6278 | print_mention_catch_fork (struct breakpoint *b) | |
6279 | { | |
6280 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6281 | } | |
6282 | ||
6149aea9 PA |
6283 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6284 | catchpoints. */ | |
6285 | ||
6286 | static void | |
6287 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6288 | { | |
6289 | fprintf_unfiltered (fp, "catch fork"); | |
6290 | } | |
6291 | ||
ce78b96d JB |
6292 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6293 | ||
6294 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6295 | { | |
6296 | insert_catch_fork, | |
6297 | remove_catch_fork, | |
6298 | breakpoint_hit_catch_fork, | |
e09342b5 | 6299 | NULL, /* resources_needed */ |
ce78b96d JB |
6300 | print_it_catch_fork, |
6301 | print_one_catch_fork, | |
f1310107 | 6302 | NULL, /* print_one_detail */ |
6149aea9 PA |
6303 | print_mention_catch_fork, |
6304 | print_recreate_catch_fork | |
ce78b96d JB |
6305 | }; |
6306 | ||
4a64f543 MS |
6307 | /* Implement the "insert" breakpoint_ops method for vfork |
6308 | catchpoints. */ | |
ce78b96d | 6309 | |
77b06cd7 TJB |
6310 | static int |
6311 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6312 | { |
77b06cd7 | 6313 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6314 | } |
6315 | ||
4a64f543 MS |
6316 | /* Implement the "remove" breakpoint_ops method for vfork |
6317 | catchpoints. */ | |
ce78b96d JB |
6318 | |
6319 | static int | |
77b06cd7 | 6320 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6321 | { |
6322 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6323 | } | |
6324 | ||
6325 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6326 | catchpoints. */ | |
6327 | ||
6328 | static int | |
f1310107 TJB |
6329 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6330 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6331 | { |
f1310107 | 6332 | return inferior_has_vforked (inferior_ptid, &bl->owner->forked_inferior_pid); |
ce78b96d JB |
6333 | } |
6334 | ||
4a64f543 MS |
6335 | /* Implement the "print_it" breakpoint_ops method for vfork |
6336 | catchpoints. */ | |
ce78b96d JB |
6337 | |
6338 | static enum print_stop_action | |
6339 | print_it_catch_vfork (struct breakpoint *b) | |
6340 | { | |
6341 | annotate_catchpoint (b->number); | |
6342 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6343 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6344 | return PRINT_SRC_AND_LOC; | |
6345 | } | |
6346 | ||
4a64f543 MS |
6347 | /* Implement the "print_one" breakpoint_ops method for vfork |
6348 | catchpoints. */ | |
ce78b96d JB |
6349 | |
6350 | static void | |
a6d9a66e | 6351 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6352 | { |
79a45b7d TT |
6353 | struct value_print_options opts; |
6354 | ||
6355 | get_user_print_options (&opts); | |
4a64f543 MS |
6356 | /* Field 4, the address, is omitted (which makes the columns not |
6357 | line up too nicely with the headers, but the effect is relatively | |
6358 | readable). */ | |
79a45b7d | 6359 | if (opts.addressprint) |
ce78b96d JB |
6360 | ui_out_field_skip (uiout, "addr"); |
6361 | annotate_field (5); | |
6362 | ui_out_text (uiout, "vfork"); | |
6363 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6364 | { | |
6365 | ui_out_text (uiout, ", process "); | |
6366 | ui_out_field_int (uiout, "what", | |
6367 | ptid_get_pid (b->forked_inferior_pid)); | |
6368 | ui_out_spaces (uiout, 1); | |
6369 | } | |
6370 | } | |
6371 | ||
6372 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6373 | catchpoints. */ | |
6374 | ||
6375 | static void | |
6376 | print_mention_catch_vfork (struct breakpoint *b) | |
6377 | { | |
6378 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6379 | } | |
6380 | ||
6149aea9 PA |
6381 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6382 | catchpoints. */ | |
6383 | ||
6384 | static void | |
6385 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6386 | { | |
6387 | fprintf_unfiltered (fp, "catch vfork"); | |
6388 | } | |
6389 | ||
ce78b96d JB |
6390 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6391 | ||
6392 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6393 | { | |
6394 | insert_catch_vfork, | |
6395 | remove_catch_vfork, | |
6396 | breakpoint_hit_catch_vfork, | |
e09342b5 | 6397 | NULL, /* resources_needed */ |
ce78b96d JB |
6398 | print_it_catch_vfork, |
6399 | print_one_catch_vfork, | |
f1310107 | 6400 | NULL, /* print_one_detail */ |
6149aea9 PA |
6401 | print_mention_catch_vfork, |
6402 | print_recreate_catch_vfork | |
ce78b96d JB |
6403 | }; |
6404 | ||
a96d9b2e SDJ |
6405 | /* Implement the "insert" breakpoint_ops method for syscall |
6406 | catchpoints. */ | |
6407 | ||
77b06cd7 TJB |
6408 | static int |
6409 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e SDJ |
6410 | { |
6411 | struct inferior *inf = current_inferior (); | |
6412 | ||
6413 | ++inf->total_syscalls_count; | |
77b06cd7 | 6414 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6415 | ++inf->any_syscall_count; |
6416 | else | |
6417 | { | |
6418 | int i, iter; | |
cc59ec59 | 6419 | |
a96d9b2e | 6420 | for (i = 0; |
77b06cd7 | 6421 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6422 | i++) |
6423 | { | |
6424 | int elem; | |
cc59ec59 | 6425 | |
a96d9b2e SDJ |
6426 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6427 | { | |
6428 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6429 | uintptr_t vec_addr_offset |
6430 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6431 | uintptr_t vec_addr; |
6432 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6433 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6434 | vec_addr_offset; | |
6435 | memset ((void *) vec_addr, 0, | |
6436 | (iter + 1 - old_size) * sizeof (int)); | |
6437 | } | |
6438 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6439 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6440 | } | |
6441 | } | |
6442 | ||
77b06cd7 TJB |
6443 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6444 | inf->total_syscalls_count != 0, | |
6445 | inf->any_syscall_count, | |
6446 | VEC_length (int, inf->syscalls_counts), | |
6447 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6448 | } |
6449 | ||
6450 | /* Implement the "remove" breakpoint_ops method for syscall | |
6451 | catchpoints. */ | |
6452 | ||
6453 | static int | |
77b06cd7 | 6454 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e SDJ |
6455 | { |
6456 | struct inferior *inf = current_inferior (); | |
6457 | ||
6458 | --inf->total_syscalls_count; | |
77b06cd7 | 6459 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6460 | --inf->any_syscall_count; |
6461 | else | |
6462 | { | |
6463 | int i, iter; | |
cc59ec59 | 6464 | |
a96d9b2e | 6465 | for (i = 0; |
77b06cd7 | 6466 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6467 | i++) |
6468 | { | |
6469 | int elem; | |
6470 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6471 | /* Shouldn't happen. */ | |
6472 | continue; | |
6473 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6474 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6475 | } | |
6476 | } | |
6477 | ||
6478 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6479 | inf->total_syscalls_count != 0, | |
6480 | inf->any_syscall_count, | |
6481 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6482 | VEC_address (int, |
6483 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6484 | } |
6485 | ||
6486 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6487 | catchpoints. */ | |
6488 | ||
6489 | static int | |
f1310107 TJB |
6490 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6491 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6492 | { |
4a64f543 MS |
6493 | /* We must check if we are catching specific syscalls in this |
6494 | breakpoint. If we are, then we must guarantee that the called | |
6495 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6496 | int syscall_number = 0; |
f1310107 | 6497 | const struct breakpoint *b = bl->owner; |
a96d9b2e SDJ |
6498 | |
6499 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6500 | return 0; | |
6501 | ||
6502 | /* Now, checking if the syscall is the same. */ | |
6503 | if (b->syscalls_to_be_caught) | |
6504 | { | |
6505 | int i, iter; | |
cc59ec59 | 6506 | |
a96d9b2e SDJ |
6507 | for (i = 0; |
6508 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6509 | i++) | |
6510 | if (syscall_number == iter) | |
6511 | break; | |
6512 | /* Not the same. */ | |
6513 | if (!iter) | |
6514 | return 0; | |
6515 | } | |
6516 | ||
6517 | return 1; | |
6518 | } | |
6519 | ||
6520 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6521 | catchpoints. */ | |
6522 | ||
6523 | static enum print_stop_action | |
6524 | print_it_catch_syscall (struct breakpoint *b) | |
6525 | { | |
6526 | /* These are needed because we want to know in which state a | |
6527 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6528 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6529 | must print "called syscall" or "returned from syscall". */ | |
6530 | ptid_t ptid; | |
6531 | struct target_waitstatus last; | |
6532 | struct syscall s; | |
6533 | struct cleanup *old_chain; | |
6534 | char *syscall_id; | |
6535 | ||
6536 | get_last_target_status (&ptid, &last); | |
6537 | ||
6538 | get_syscall_by_number (last.value.syscall_number, &s); | |
6539 | ||
6540 | annotate_catchpoint (b->number); | |
6541 | ||
6542 | if (s.name == NULL) | |
6543 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6544 | else | |
6545 | syscall_id = xstrprintf ("'%s'", s.name); | |
6546 | ||
6547 | old_chain = make_cleanup (xfree, syscall_id); | |
6548 | ||
6549 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6550 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6551 | b->number, syscall_id); | |
6552 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6553 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6554 | b->number, syscall_id); | |
6555 | ||
6556 | do_cleanups (old_chain); | |
6557 | ||
6558 | return PRINT_SRC_AND_LOC; | |
6559 | } | |
6560 | ||
6561 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6562 | catchpoints. */ | |
6563 | ||
6564 | static void | |
6565 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6566 | struct bp_location **last_loc) |
a96d9b2e SDJ |
6567 | { |
6568 | struct value_print_options opts; | |
6569 | ||
6570 | get_user_print_options (&opts); | |
4a64f543 MS |
6571 | /* Field 4, the address, is omitted (which makes the columns not |
6572 | line up too nicely with the headers, but the effect is relatively | |
6573 | readable). */ | |
a96d9b2e SDJ |
6574 | if (opts.addressprint) |
6575 | ui_out_field_skip (uiout, "addr"); | |
6576 | annotate_field (5); | |
6577 | ||
6578 | if (b->syscalls_to_be_caught | |
6579 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6580 | ui_out_text (uiout, "syscalls \""); | |
6581 | else | |
6582 | ui_out_text (uiout, "syscall \""); | |
6583 | ||
6584 | if (b->syscalls_to_be_caught) | |
6585 | { | |
6586 | int i, iter; | |
6587 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6588 | |
a96d9b2e SDJ |
6589 | for (i = 0; |
6590 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6591 | i++) | |
6592 | { | |
6593 | char *x = text; | |
6594 | struct syscall s; | |
6595 | get_syscall_by_number (iter, &s); | |
6596 | ||
6597 | if (s.name != NULL) | |
6598 | text = xstrprintf ("%s%s, ", text, s.name); | |
6599 | else | |
6600 | text = xstrprintf ("%s%d, ", text, iter); | |
6601 | ||
6602 | /* We have to xfree the last 'text' (now stored at 'x') | |
6603 | because xstrprintf dinamically allocates new space for it | |
6604 | on every call. */ | |
6605 | xfree (x); | |
6606 | } | |
6607 | /* Remove the last comma. */ | |
6608 | text[strlen (text) - 2] = '\0'; | |
6609 | ui_out_field_string (uiout, "what", text); | |
6610 | } | |
6611 | else | |
6612 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6613 | ui_out_text (uiout, "\" "); | |
6614 | } | |
6615 | ||
6616 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6617 | catchpoints. */ | |
6618 | ||
6619 | static void | |
6620 | print_mention_catch_syscall (struct breakpoint *b) | |
6621 | { | |
6622 | if (b->syscalls_to_be_caught) | |
6623 | { | |
6624 | int i, iter; | |
6625 | ||
6626 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6627 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6628 | else | |
6629 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6630 | ||
6631 | for (i = 0; | |
6632 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6633 | i++) | |
6634 | { | |
6635 | struct syscall s; | |
6636 | get_syscall_by_number (iter, &s); | |
6637 | ||
6638 | if (s.name) | |
6639 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6640 | else | |
6641 | printf_filtered (" %d", s.number); | |
6642 | } | |
6643 | printf_filtered (")"); | |
6644 | } | |
6645 | else | |
6646 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6647 | b->number); | |
6648 | } | |
6649 | ||
6149aea9 PA |
6650 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6651 | catchpoints. */ | |
6652 | ||
6653 | static void | |
6654 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6655 | { | |
6656 | fprintf_unfiltered (fp, "catch syscall"); | |
6657 | ||
6658 | if (b->syscalls_to_be_caught) | |
6659 | { | |
6660 | int i, iter; | |
6661 | ||
6662 | for (i = 0; | |
6663 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6664 | i++) | |
6665 | { | |
6666 | struct syscall s; | |
6667 | ||
6668 | get_syscall_by_number (iter, &s); | |
6669 | if (s.name) | |
6670 | fprintf_unfiltered (fp, " %s", s.name); | |
6671 | else | |
6672 | fprintf_unfiltered (fp, " %d", s.number); | |
6673 | } | |
6674 | } | |
6675 | } | |
6676 | ||
a96d9b2e SDJ |
6677 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6678 | ||
6679 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6680 | { | |
6681 | insert_catch_syscall, | |
6682 | remove_catch_syscall, | |
6683 | breakpoint_hit_catch_syscall, | |
e09342b5 | 6684 | NULL, /* resources_needed */ |
a96d9b2e SDJ |
6685 | print_it_catch_syscall, |
6686 | print_one_catch_syscall, | |
f1310107 | 6687 | NULL, /* print_one_detail */ |
6149aea9 PA |
6688 | print_mention_catch_syscall, |
6689 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6690 | }; |
6691 | ||
6692 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6693 | ||
6694 | static int | |
6695 | syscall_catchpoint_p (struct breakpoint *b) | |
6696 | { | |
6697 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6698 | } | |
6699 | ||
6700 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6701 | but does NOT mention it nor update the global location list. | |
6702 | This is useful if you need to fill more fields in the | |
6703 | struct breakpoint before calling mention. | |
ce78b96d JB |
6704 | |
6705 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6706 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6707 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6708 | to the catchpoint. */ | |
6709 | ||
6710 | static struct breakpoint * | |
a96d9b2e SDJ |
6711 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6712 | char *cond_string, | |
6713 | struct breakpoint_ops *ops) | |
c906108c | 6714 | { |
c5aa993b JM |
6715 | struct symtab_and_line sal; |
6716 | struct breakpoint *b; | |
c5aa993b | 6717 | |
fe39c653 | 6718 | init_sal (&sal); |
6c95b8df | 6719 | sal.pspace = current_program_space; |
c5aa993b | 6720 | |
a6d9a66e | 6721 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6722 | set_breakpoint_count (breakpoint_count + 1); |
6723 | b->number = breakpoint_count; | |
ce78b96d | 6724 | |
1b36a34b | 6725 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6726 | b->thread = -1; |
c906108c | 6727 | b->addr_string = NULL; |
b5de0fa7 EZ |
6728 | b->enable_state = bp_enabled; |
6729 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6730 | b->ops = ops; |
c5aa993b | 6731 | |
a96d9b2e SDJ |
6732 | return b; |
6733 | } | |
6734 | ||
6735 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6736 | ||
6737 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6738 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6739 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6740 | to the catchpoint. */ | |
6741 | ||
6742 | static struct breakpoint * | |
6743 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6744 | char *cond_string, struct breakpoint_ops *ops) | |
6745 | { | |
6746 | struct breakpoint *b = | |
6747 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6748 | ||
c906108c | 6749 | mention (b); |
ce78b96d | 6750 | update_global_location_list (1); |
c906108c | 6751 | |
ce78b96d | 6752 | return b; |
c906108c | 6753 | } |
c5aa993b | 6754 | |
9b70b993 | 6755 | static void |
a6d9a66e UW |
6756 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6757 | int tempflag, char *cond_string, | |
ce78b96d | 6758 | struct breakpoint_ops *ops) |
c906108c | 6759 | { |
a6d9a66e UW |
6760 | struct breakpoint *b |
6761 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6762 | |
6763 | /* FIXME: We should put this information in a breakpoint private data | |
6764 | area. */ | |
6765 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6766 | } |
6767 | ||
fe798b75 JB |
6768 | /* Exec catchpoints. */ |
6769 | ||
77b06cd7 TJB |
6770 | static int |
6771 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6772 | { |
77b06cd7 | 6773 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6774 | } |
c906108c | 6775 | |
fe798b75 | 6776 | static int |
77b06cd7 | 6777 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6778 | { |
6779 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6780 | } | |
c906108c | 6781 | |
fe798b75 | 6782 | static int |
f1310107 TJB |
6783 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6784 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6785 | { |
f1310107 | 6786 | return inferior_has_execd (inferior_ptid, &bl->owner->exec_pathname); |
fe798b75 | 6787 | } |
c906108c | 6788 | |
fe798b75 JB |
6789 | static enum print_stop_action |
6790 | print_it_catch_exec (struct breakpoint *b) | |
6791 | { | |
6792 | annotate_catchpoint (b->number); | |
6793 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6794 | b->exec_pathname); | |
6795 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6796 | } |
6797 | ||
fe798b75 | 6798 | static void |
a6d9a66e | 6799 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6800 | { |
6801 | struct value_print_options opts; | |
6802 | ||
6803 | get_user_print_options (&opts); | |
6804 | ||
6805 | /* Field 4, the address, is omitted (which makes the columns | |
6806 | not line up too nicely with the headers, but the effect | |
6807 | is relatively readable). */ | |
6808 | if (opts.addressprint) | |
6809 | ui_out_field_skip (uiout, "addr"); | |
6810 | annotate_field (5); | |
6811 | ui_out_text (uiout, "exec"); | |
6812 | if (b->exec_pathname != NULL) | |
6813 | { | |
6814 | ui_out_text (uiout, ", program \""); | |
6815 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6816 | ui_out_text (uiout, "\" "); | |
6817 | } | |
6818 | } | |
6819 | ||
6820 | static void | |
6821 | print_mention_catch_exec (struct breakpoint *b) | |
6822 | { | |
6823 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6824 | } | |
6825 | ||
6149aea9 PA |
6826 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6827 | catchpoints. */ | |
6828 | ||
6829 | static void | |
6830 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6831 | { | |
6832 | fprintf_unfiltered (fp, "catch exec"); | |
6833 | } | |
6834 | ||
fe798b75 JB |
6835 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6836 | { | |
6837 | insert_catch_exec, | |
6838 | remove_catch_exec, | |
6839 | breakpoint_hit_catch_exec, | |
e09342b5 | 6840 | NULL, /* resources_needed */ |
fe798b75 JB |
6841 | print_it_catch_exec, |
6842 | print_one_catch_exec, | |
f1310107 | 6843 | NULL, /* print_one_detail */ |
6149aea9 PA |
6844 | print_mention_catch_exec, |
6845 | print_recreate_catch_exec | |
fe798b75 JB |
6846 | }; |
6847 | ||
a96d9b2e SDJ |
6848 | static void |
6849 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6850 | struct breakpoint_ops *ops) | |
6851 | { | |
6852 | struct gdbarch *gdbarch = get_current_arch (); | |
6853 | struct breakpoint *b = | |
6854 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6855 | ||
6856 | b->syscalls_to_be_caught = filter; | |
6857 | ||
6858 | /* Now, we have to mention the breakpoint and update the global | |
6859 | location list. */ | |
6860 | mention (b); | |
6861 | update_global_location_list (1); | |
6862 | } | |
6863 | ||
c906108c | 6864 | static int |
fba45db2 | 6865 | hw_breakpoint_used_count (void) |
c906108c | 6866 | { |
c906108c | 6867 | int i = 0; |
f1310107 TJB |
6868 | struct breakpoint *b; |
6869 | struct bp_location *bl; | |
c906108c SS |
6870 | |
6871 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6872 | { |
d6b74ac4 | 6873 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6874 | for (bl = b->loc; bl; bl = bl->next) |
6875 | { | |
6876 | /* Special types of hardware breakpoints may use more than | |
6877 | one register. */ | |
6878 | if (b->ops && b->ops->resources_needed) | |
6879 | i += b->ops->resources_needed (bl); | |
6880 | else | |
6881 | i++; | |
6882 | } | |
c5aa993b | 6883 | } |
c906108c SS |
6884 | |
6885 | return i; | |
6886 | } | |
6887 | ||
6888 | static int | |
fba45db2 | 6889 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6890 | { |
c906108c | 6891 | int i = 0; |
e09342b5 TJB |
6892 | struct breakpoint *b; |
6893 | struct bp_location *bl; | |
c906108c SS |
6894 | |
6895 | *other_type_used = 0; | |
6896 | ALL_BREAKPOINTS (b) | |
e09342b5 TJB |
6897 | { |
6898 | if (!breakpoint_enabled (b)) | |
6899 | continue; | |
6900 | ||
c5aa993b | 6901 | if (b->type == type) |
e09342b5 TJB |
6902 | for (bl = b->loc; bl; bl = bl->next) |
6903 | { | |
6904 | /* Special types of hardware watchpoints may use more than | |
6905 | one register. */ | |
6906 | if (b->ops && b->ops->resources_needed) | |
6907 | i += b->ops->resources_needed (bl); | |
6908 | else | |
6909 | i++; | |
6910 | } | |
cc60f2e3 | 6911 | else if (is_hardware_watchpoint (b)) |
c5aa993b | 6912 | *other_type_used = 1; |
e09342b5 TJB |
6913 | } |
6914 | ||
c906108c SS |
6915 | return i; |
6916 | } | |
6917 | ||
c906108c | 6918 | void |
fba45db2 | 6919 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6920 | { |
c5aa993b | 6921 | struct breakpoint *b; |
c906108c SS |
6922 | |
6923 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6924 | { |
cc60f2e3 | 6925 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6926 | { |
b5de0fa7 | 6927 | b->enable_state = bp_call_disabled; |
b60e7edf | 6928 | update_global_location_list (0); |
c5aa993b JM |
6929 | } |
6930 | } | |
c906108c SS |
6931 | } |
6932 | ||
6933 | void | |
fba45db2 | 6934 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6935 | { |
c5aa993b | 6936 | struct breakpoint *b; |
c906108c SS |
6937 | |
6938 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6939 | { |
cc60f2e3 | 6940 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6941 | { |
b5de0fa7 | 6942 | b->enable_state = bp_enabled; |
b60e7edf | 6943 | update_global_location_list (1); |
c5aa993b JM |
6944 | } |
6945 | } | |
c906108c SS |
6946 | } |
6947 | ||
8bea4e01 UW |
6948 | void |
6949 | disable_breakpoints_before_startup (void) | |
6950 | { | |
6951 | struct breakpoint *b; | |
6952 | int found = 0; | |
6953 | ||
6954 | ALL_BREAKPOINTS (b) | |
6955 | { | |
6c95b8df PA |
6956 | if (b->pspace != current_program_space) |
6957 | continue; | |
6958 | ||
8bea4e01 UW |
6959 | if ((b->type == bp_breakpoint |
6960 | || b->type == bp_hardware_breakpoint) | |
6961 | && breakpoint_enabled (b)) | |
6962 | { | |
6963 | b->enable_state = bp_startup_disabled; | |
6964 | found = 1; | |
6965 | } | |
6966 | } | |
6967 | ||
6968 | if (found) | |
6969 | update_global_location_list (0); | |
6970 | ||
6c95b8df | 6971 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6972 | } |
6973 | ||
6974 | void | |
6975 | enable_breakpoints_after_startup (void) | |
6976 | { | |
6977 | struct breakpoint *b; | |
6978 | int found = 0; | |
6979 | ||
6c95b8df | 6980 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6981 | |
6982 | ALL_BREAKPOINTS (b) | |
6983 | { | |
6c95b8df PA |
6984 | if (b->pspace != current_program_space) |
6985 | continue; | |
6986 | ||
8bea4e01 UW |
6987 | if ((b->type == bp_breakpoint |
6988 | || b->type == bp_hardware_breakpoint) | |
6989 | && b->enable_state == bp_startup_disabled) | |
6990 | { | |
6991 | b->enable_state = bp_enabled; | |
6992 | found = 1; | |
6993 | } | |
6994 | } | |
6995 | ||
6996 | if (found) | |
6997 | breakpoint_re_set (); | |
6998 | } | |
6999 | ||
c906108c SS |
7000 | |
7001 | /* Set a breakpoint that will evaporate an end of command | |
7002 | at address specified by SAL. | |
7003 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
7004 | ||
7005 | struct breakpoint * | |
a6d9a66e UW |
7006 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7007 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7008 | { |
52f0bd74 | 7009 | struct breakpoint *b; |
edb3359d DJ |
7010 | |
7011 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
7012 | one. */ | |
7013 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
7014 | ||
a6d9a66e | 7015 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
7016 | b->enable_state = bp_enabled; |
7017 | b->disposition = disp_donttouch; | |
818dd999 | 7018 | b->frame_id = frame_id; |
c906108c | 7019 | |
4a64f543 MS |
7020 | /* If we're debugging a multi-threaded program, then we want |
7021 | momentary breakpoints to be active in only a single thread of | |
7022 | control. */ | |
39f77062 KB |
7023 | if (in_thread_list (inferior_ptid)) |
7024 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 7025 | |
b60e7edf | 7026 | update_global_location_list_nothrow (1); |
74960c60 | 7027 | |
c906108c SS |
7028 | return b; |
7029 | } | |
611c83ae | 7030 | |
e58b0e63 PA |
7031 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7032 | ORIG is NULL. */ | |
7033 | ||
7034 | struct breakpoint * | |
7035 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7036 | { | |
7037 | struct breakpoint *copy; | |
7038 | ||
7039 | /* If there's nothing to clone, then return nothing. */ | |
7040 | if (orig == NULL) | |
7041 | return NULL; | |
7042 | ||
a6d9a66e | 7043 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 | 7044 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7045 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7046 | |
a6d9a66e | 7047 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7048 | copy->loc->requested_address = orig->loc->requested_address; |
7049 | copy->loc->address = orig->loc->address; | |
7050 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7051 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
7052 | |
7053 | if (orig->source_file == NULL) | |
7054 | copy->source_file = NULL; | |
7055 | else | |
7056 | copy->source_file = xstrdup (orig->source_file); | |
7057 | ||
7058 | copy->line_number = orig->line_number; | |
7059 | copy->frame_id = orig->frame_id; | |
7060 | copy->thread = orig->thread; | |
6c95b8df | 7061 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7062 | |
7063 | copy->enable_state = bp_enabled; | |
7064 | copy->disposition = disp_donttouch; | |
7065 | copy->number = internal_breakpoint_number--; | |
7066 | ||
7067 | update_global_location_list_nothrow (0); | |
7068 | return copy; | |
7069 | } | |
7070 | ||
611c83ae | 7071 | struct breakpoint * |
a6d9a66e UW |
7072 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7073 | enum bptype type) | |
611c83ae PA |
7074 | { |
7075 | struct symtab_and_line sal; | |
7076 | ||
7077 | sal = find_pc_line (pc, 0); | |
7078 | sal.pc = pc; | |
7079 | sal.section = find_pc_overlay (pc); | |
7080 | sal.explicit_pc = 1; | |
7081 | ||
a6d9a66e | 7082 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7083 | } |
c906108c | 7084 | \f |
c5aa993b | 7085 | |
c906108c SS |
7086 | /* Tell the user we have just set a breakpoint B. */ |
7087 | ||
7088 | static void | |
fba45db2 | 7089 | mention (struct breakpoint *b) |
c906108c SS |
7090 | { |
7091 | int say_where = 0; | |
fa8a61dc | 7092 | struct cleanup *ui_out_chain; |
79a45b7d TT |
7093 | struct value_print_options opts; |
7094 | ||
7095 | get_user_print_options (&opts); | |
8b93c638 | 7096 | |
9a4105ab AC |
7097 | /* FIXME: This is misplaced; mention() is called by things (like |
7098 | hitting a watchpoint) other than breakpoint creation. It should | |
7099 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 7100 | random calls to breakpoint_changed with this hook. */ |
383f836e | 7101 | observer_notify_breakpoint_created (b->number); |
c906108c | 7102 | |
3086aeae DJ |
7103 | if (b->ops != NULL && b->ops->print_mention != NULL) |
7104 | b->ops->print_mention (b); | |
7105 | else | |
7106 | switch (b->type) | |
7107 | { | |
7108 | case bp_none: | |
3e43a32a MS |
7109 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), |
7110 | b->number); | |
3086aeae DJ |
7111 | break; |
7112 | case bp_watchpoint: | |
7113 | ui_out_text (uiout, "Watchpoint "); | |
7114 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7115 | ui_out_field_int (uiout, "number", b->number); | |
7116 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7117 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7118 | do_cleanups (ui_out_chain); |
7119 | break; | |
7120 | case bp_hardware_watchpoint: | |
7121 | ui_out_text (uiout, "Hardware watchpoint "); | |
7122 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7123 | ui_out_field_int (uiout, "number", b->number); | |
7124 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7125 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7126 | do_cleanups (ui_out_chain); |
7127 | break; | |
7128 | case bp_read_watchpoint: | |
7129 | ui_out_text (uiout, "Hardware read watchpoint "); | |
7130 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
7131 | ui_out_field_int (uiout, "number", b->number); | |
7132 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7133 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7134 | do_cleanups (ui_out_chain); |
7135 | break; | |
7136 | case bp_access_watchpoint: | |
7137 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
7138 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
7139 | ui_out_field_int (uiout, "number", b->number); | |
7140 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7141 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7142 | do_cleanups (ui_out_chain); |
7143 | break; | |
7144 | case bp_breakpoint: | |
0e30163f | 7145 | case bp_gnu_ifunc_resolver: |
3086aeae DJ |
7146 | if (ui_out_is_mi_like_p (uiout)) |
7147 | { | |
7148 | say_where = 0; | |
7149 | break; | |
7150 | } | |
2cec12e5 AR |
7151 | if (b->disposition == disp_del) |
7152 | printf_filtered (_("Temporary breakpoint")); | |
7153 | else | |
7154 | printf_filtered (_("Breakpoint")); | |
7155 | printf_filtered (_(" %d"), b->number); | |
0e30163f JK |
7156 | if (b->type == bp_gnu_ifunc_resolver) |
7157 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
3086aeae DJ |
7158 | say_where = 1; |
7159 | break; | |
7160 | case bp_hardware_breakpoint: | |
7161 | if (ui_out_is_mi_like_p (uiout)) | |
7162 | { | |
7163 | say_where = 0; | |
7164 | break; | |
7165 | } | |
a3f17187 | 7166 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
7167 | say_where = 1; |
7168 | break; | |
1042e4c0 SS |
7169 | case bp_tracepoint: |
7170 | if (ui_out_is_mi_like_p (uiout)) | |
7171 | { | |
7172 | say_where = 0; | |
7173 | break; | |
7174 | } | |
7175 | printf_filtered (_("Tracepoint")); | |
7176 | printf_filtered (_(" %d"), b->number); | |
7177 | say_where = 1; | |
7178 | break; | |
7a697b8d SS |
7179 | case bp_fast_tracepoint: |
7180 | if (ui_out_is_mi_like_p (uiout)) | |
7181 | { | |
7182 | say_where = 0; | |
7183 | break; | |
7184 | } | |
7185 | printf_filtered (_("Fast tracepoint")); | |
7186 | printf_filtered (_(" %d"), b->number); | |
7187 | say_where = 1; | |
7188 | break; | |
0fb4aa4b PA |
7189 | case bp_static_tracepoint: |
7190 | if (ui_out_is_mi_like_p (uiout)) | |
7191 | { | |
7192 | say_where = 0; | |
7193 | break; | |
7194 | } | |
7195 | printf_filtered (_("Static tracepoint")); | |
7196 | printf_filtered (_(" %d"), b->number); | |
7197 | say_where = 1; | |
7198 | break; | |
3086aeae DJ |
7199 | |
7200 | case bp_until: | |
7201 | case bp_finish: | |
7202 | case bp_longjmp: | |
7203 | case bp_longjmp_resume: | |
186c406b TT |
7204 | case bp_exception: |
7205 | case bp_exception_resume: | |
3086aeae | 7206 | case bp_step_resume: |
3086aeae | 7207 | case bp_call_dummy: |
aa7d318d | 7208 | case bp_std_terminate: |
3086aeae DJ |
7209 | case bp_watchpoint_scope: |
7210 | case bp_shlib_event: | |
7211 | case bp_thread_event: | |
7212 | case bp_overlay_event: | |
4efc6507 | 7213 | case bp_jit_event: |
0fd8e87f | 7214 | case bp_longjmp_master: |
aa7d318d | 7215 | case bp_std_terminate_master: |
186c406b | 7216 | case bp_exception_master: |
0e30163f | 7217 | case bp_gnu_ifunc_resolver_return: |
3086aeae DJ |
7218 | break; |
7219 | } | |
c906108c | 7220 | |
c906108c SS |
7221 | if (say_where) |
7222 | { | |
a3f17187 AC |
7223 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
7224 | single string. */ | |
0d381245 | 7225 | if (b->loc == NULL) |
c906108c | 7226 | { |
a3f17187 | 7227 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
7228 | } |
7229 | else | |
7230 | { | |
79a45b7d | 7231 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
7232 | { |
7233 | printf_filtered (" at "); | |
5af949e3 UW |
7234 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
7235 | gdb_stdout); | |
0101ce28 JJ |
7236 | } |
7237 | if (b->source_file) | |
7238 | printf_filtered (": file %s, line %d.", | |
7239 | b->source_file, b->line_number); | |
0d381245 VP |
7240 | |
7241 | if (b->loc->next) | |
7242 | { | |
7243 | struct bp_location *loc = b->loc; | |
7244 | int n = 0; | |
7245 | for (; loc; loc = loc->next) | |
7246 | ++n; | |
7247 | printf_filtered (" (%d locations)", n); | |
7248 | } | |
7249 | ||
c906108c | 7250 | } |
c906108c | 7251 | } |
9dc5e2a9 | 7252 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7253 | return; |
c906108c SS |
7254 | printf_filtered ("\n"); |
7255 | } | |
c906108c | 7256 | \f |
c5aa993b | 7257 | |
0d381245 | 7258 | static struct bp_location * |
39d61571 | 7259 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7260 | const struct symtab_and_line *sal) |
7261 | { | |
7262 | struct bp_location *loc, **tmp; | |
7263 | ||
39d61571 | 7264 | loc = allocate_bp_location (b); |
0d381245 VP |
7265 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7266 | ; | |
7267 | *tmp = loc; | |
a6d9a66e UW |
7268 | loc->gdbarch = get_sal_arch (*sal); |
7269 | if (!loc->gdbarch) | |
7270 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7271 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7272 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7273 | loc->requested_address, b->type); | |
6c95b8df PA |
7274 | loc->pspace = sal->pspace; |
7275 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7276 | loc->section = sal->section; |
7277 | ||
0e30163f JK |
7278 | set_breakpoint_location_function (loc, |
7279 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7280 | return loc; |
7281 | } | |
514f746b AR |
7282 | \f |
7283 | ||
7284 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7285 | return 0 otherwise. */ | |
7286 | ||
7287 | static int | |
7288 | bp_loc_is_permanent (struct bp_location *loc) | |
7289 | { | |
7290 | int len; | |
7291 | CORE_ADDR addr; | |
7292 | const gdb_byte *brk; | |
7293 | gdb_byte *target_mem; | |
939c61fa JK |
7294 | struct cleanup *cleanup; |
7295 | int retval = 0; | |
514f746b AR |
7296 | |
7297 | gdb_assert (loc != NULL); | |
7298 | ||
7299 | addr = loc->address; | |
a6d9a66e | 7300 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7301 | |
939c61fa JK |
7302 | /* Software breakpoints unsupported? */ |
7303 | if (brk == NULL) | |
7304 | return 0; | |
7305 | ||
514f746b AR |
7306 | target_mem = alloca (len); |
7307 | ||
939c61fa JK |
7308 | /* Enable the automatic memory restoration from breakpoints while |
7309 | we read the memory. Otherwise we could say about our temporary | |
7310 | breakpoints they are permanent. */ | |
6c95b8df PA |
7311 | cleanup = save_current_space_and_thread (); |
7312 | ||
7313 | switch_to_program_space_and_thread (loc->pspace); | |
7314 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7315 | |
514f746b AR |
7316 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7317 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7318 | retval = 1; |
514f746b | 7319 | |
939c61fa JK |
7320 | do_cleanups (cleanup); |
7321 | ||
7322 | return retval; | |
514f746b AR |
7323 | } |
7324 | ||
7325 | ||
c3f6f71d | 7326 | |
018d34a4 VP |
7327 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7328 | as textual description of the location, and COND_STRING | |
db107f19 | 7329 | as condition expression. */ |
018d34a4 VP |
7330 | |
7331 | static void | |
8cdf0e15 VP |
7332 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7333 | struct symtabs_and_lines sals, char *addr_string, | |
7334 | char *cond_string, | |
7335 | enum bptype type, enum bpdisp disposition, | |
7336 | int thread, int task, int ignore_count, | |
84f4c1fe | 7337 | struct breakpoint_ops *ops, int from_tty, |
56435ebe | 7338 | int enabled, int internal, int display_canonical) |
018d34a4 | 7339 | { |
0d381245 VP |
7340 | struct breakpoint *b = NULL; |
7341 | int i; | |
018d34a4 VP |
7342 | |
7343 | if (type == bp_hardware_breakpoint) | |
7344 | { | |
7345 | int i = hw_breakpoint_used_count (); | |
7346 | int target_resources_ok = | |
d92524f1 | 7347 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7348 | i + 1, 0); |
7349 | if (target_resources_ok == 0) | |
7350 | error (_("No hardware breakpoint support in the target.")); | |
7351 | else if (target_resources_ok < 0) | |
7352 | error (_("Hardware breakpoints used exceeds limit.")); | |
7353 | } | |
7354 | ||
6c95b8df PA |
7355 | gdb_assert (sals.nelts > 0); |
7356 | ||
0d381245 VP |
7357 | for (i = 0; i < sals.nelts; ++i) |
7358 | { | |
7359 | struct symtab_and_line sal = sals.sals[i]; | |
7360 | struct bp_location *loc; | |
7361 | ||
7362 | if (from_tty) | |
5af949e3 UW |
7363 | { |
7364 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7365 | if (!loc_gdbarch) | |
7366 | loc_gdbarch = gdbarch; | |
7367 | ||
7368 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7369 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7370 | } |
0d381245 VP |
7371 | |
7372 | if (i == 0) | |
7373 | { | |
a6d9a66e | 7374 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7375 | set_breakpoint_number (internal, b); |
0d381245 | 7376 | b->thread = thread; |
4a306c9a | 7377 | b->task = task; |
018d34a4 | 7378 | |
0d381245 VP |
7379 | b->cond_string = cond_string; |
7380 | b->ignore_count = ignore_count; | |
41447f92 | 7381 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7382 | b->disposition = disposition; |
6c95b8df PA |
7383 | b->pspace = sals.sals[0].pspace; |
7384 | ||
0fb4aa4b PA |
7385 | if (type == bp_static_tracepoint) |
7386 | { | |
7387 | struct static_tracepoint_marker marker; | |
7388 | ||
7389 | if (is_marker_spec (addr_string)) | |
7390 | { | |
7391 | /* We already know the marker exists, otherwise, we | |
7392 | wouldn't see a sal for it. */ | |
7393 | char *p = &addr_string[3]; | |
7394 | char *endp; | |
7395 | char *marker_str; | |
7396 | int i; | |
7397 | ||
e9cafbcc | 7398 | p = skip_spaces (p); |
0fb4aa4b | 7399 | |
e9cafbcc | 7400 | endp = skip_to_space (p); |
0fb4aa4b PA |
7401 | |
7402 | marker_str = savestring (p, endp - p); | |
7403 | b->static_trace_marker_id = marker_str; | |
7404 | ||
3e43a32a MS |
7405 | printf_filtered (_("Probed static tracepoint " |
7406 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7407 | b->static_trace_marker_id); |
7408 | } | |
7409 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7410 | { | |
7411 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7412 | release_static_tracepoint_marker (&marker); | |
7413 | ||
3e43a32a MS |
7414 | printf_filtered (_("Probed static tracepoint " |
7415 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7416 | b->static_trace_marker_id); |
7417 | } | |
7418 | else | |
3e43a32a MS |
7419 | warning (_("Couldn't determine the static " |
7420 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7421 | } |
7422 | ||
6c95b8df | 7423 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7424 | && (b->type == bp_breakpoint |
7425 | || b->type == bp_hardware_breakpoint)) | |
7426 | b->enable_state = bp_startup_disabled; | |
7427 | ||
0d381245 VP |
7428 | loc = b->loc; |
7429 | } | |
7430 | else | |
018d34a4 | 7431 | { |
39d61571 | 7432 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7433 | } |
7434 | ||
514f746b AR |
7435 | if (bp_loc_is_permanent (loc)) |
7436 | make_breakpoint_permanent (b); | |
7437 | ||
0d381245 VP |
7438 | if (b->cond_string) |
7439 | { | |
7440 | char *arg = b->cond_string; | |
d32a6982 | 7441 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7442 | if (*arg) |
db107f19 | 7443 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7444 | } |
0d381245 | 7445 | } |
018d34a4 | 7446 | |
56435ebe | 7447 | b->display_canonical = display_canonical; |
018d34a4 VP |
7448 | if (addr_string) |
7449 | b->addr_string = addr_string; | |
7450 | else | |
7451 | /* addr_string has to be used or breakpoint_re_set will delete | |
7452 | me. */ | |
5af949e3 UW |
7453 | b->addr_string |
7454 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7455 | |
604133b5 | 7456 | b->ops = ops; |
84f4c1fe PM |
7457 | if (internal) |
7458 | /* Do not mention breakpoints with a negative number, but do | |
7459 | notify observers. */ | |
7460 | observer_notify_breakpoint_created (b->number); | |
7461 | else | |
7462 | mention (b); | |
018d34a4 VP |
7463 | } |
7464 | ||
ed0616c6 VP |
7465 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7466 | elements to fill the void space. */ | |
2c0b251b PA |
7467 | static void |
7468 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7469 | { |
7470 | int i = index_to_remove+1; | |
7471 | int last_index = sal->nelts-1; | |
7472 | ||
7473 | for (;i <= last_index; ++i) | |
7474 | sal->sals[i-1] = sal->sals[i]; | |
7475 | ||
7476 | --(sal->nelts); | |
7477 | } | |
7478 | ||
6c95b8df PA |
7479 | /* If appropriate, obtains all sals that correspond to the same file |
7480 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7481 | will want to set a breakpoint at foo.c:line, and not really care | |
7482 | about program spaces. This is done only if SAL does not have | |
7483 | explicit PC and has line and file information. If we got just a | |
7484 | single expanded sal, return the original. | |
ed0616c6 | 7485 | |
6c95b8df PA |
7486 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7487 | which the name of enclosing function is different from SAL. This | |
7488 | makes sure that if we have breakpoint originally set in template | |
7489 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7490 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7491 | |
2c0b251b | 7492 | static struct symtabs_and_lines |
ed0616c6 VP |
7493 | expand_line_sal_maybe (struct symtab_and_line sal) |
7494 | { | |
7495 | struct symtabs_and_lines expanded; | |
7496 | CORE_ADDR original_pc = sal.pc; | |
7497 | char *original_function = NULL; | |
7498 | int found; | |
7499 | int i; | |
6c95b8df | 7500 | struct cleanup *old_chain; |
ed0616c6 VP |
7501 | |
7502 | /* If we have explicit pc, don't expand. | |
7503 | If we have no line number, we can't expand. */ | |
7504 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7505 | { | |
7506 | expanded.nelts = 1; | |
7507 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7508 | expanded.sals[0] = sal; | |
7509 | return expanded; | |
7510 | } | |
7511 | ||
7512 | sal.pc = 0; | |
6c95b8df PA |
7513 | |
7514 | old_chain = save_current_space_and_thread (); | |
7515 | ||
7516 | switch_to_program_space_and_thread (sal.pspace); | |
7517 | ||
ed0616c6 | 7518 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7519 | |
7520 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7521 | expanded = expand_line_sal (sal); |
6c95b8df | 7522 | |
ed0616c6 VP |
7523 | if (expanded.nelts == 1) |
7524 | { | |
3dba1c98 JB |
7525 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7526 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7527 | xfree (expanded.sals); |
7528 | expanded.nelts = 1; | |
7529 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7530 | sal.pc = original_pc; | |
7531 | expanded.sals[0] = sal; | |
3dba1c98 | 7532 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7533 | do_cleanups (old_chain); |
ed0616c6 VP |
7534 | return expanded; |
7535 | } | |
7536 | ||
7537 | if (!sal.explicit_line) | |
7538 | { | |
7539 | CORE_ADDR func_addr, func_end; | |
7540 | for (i = 0; i < expanded.nelts; ++i) | |
7541 | { | |
7542 | CORE_ADDR pc = expanded.sals[i].pc; | |
7543 | char *this_function; | |
6c95b8df PA |
7544 | |
7545 | /* We need to switch threads as well since we're about to | |
7546 | read memory. */ | |
7547 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7548 | ||
ed0616c6 VP |
7549 | if (find_pc_partial_function (pc, &this_function, |
7550 | &func_addr, &func_end)) | |
7551 | { | |
059fb39f PM |
7552 | if (this_function |
7553 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7554 | { |
7555 | remove_sal (&expanded, i); | |
7556 | --i; | |
7557 | } | |
ed0616c6 VP |
7558 | } |
7559 | } | |
7560 | } | |
059acae7 UW |
7561 | |
7562 | /* Skip the function prologue if necessary. */ | |
7563 | for (i = 0; i < expanded.nelts; ++i) | |
7564 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7565 | |
6c95b8df PA |
7566 | do_cleanups (old_chain); |
7567 | ||
ed0616c6 VP |
7568 | if (expanded.nelts <= 1) |
7569 | { | |
4a64f543 MS |
7570 | /* This is un ugly workaround. If we get zero expanded sals |
7571 | then something is really wrong. Fix that by returning the | |
7572 | original sal. */ | |
7573 | ||
ed0616c6 VP |
7574 | xfree (expanded.sals); |
7575 | expanded.nelts = 1; | |
7576 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7577 | sal.pc = original_pc; | |
7578 | expanded.sals[0] = sal; | |
7579 | return expanded; | |
7580 | } | |
7581 | ||
7582 | if (original_pc) | |
7583 | { | |
7584 | found = 0; | |
7585 | for (i = 0; i < expanded.nelts; ++i) | |
7586 | if (expanded.sals[i].pc == original_pc) | |
7587 | { | |
7588 | found = 1; | |
7589 | break; | |
7590 | } | |
7591 | gdb_assert (found); | |
7592 | } | |
7593 | ||
7594 | return expanded; | |
7595 | } | |
7596 | ||
018d34a4 VP |
7597 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7598 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7599 | value. COND_STRING, if not NULL, specified the condition to be | |
7600 | used for all breakpoints. Essentially the only case where | |
7601 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7602 | function. In that case, it's still not possible to specify | |
7603 | separate conditions for different overloaded functions, so | |
7604 | we take just a single condition string. | |
7605 | ||
c3f6f71d | 7606 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7607 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7608 | array contents). If the function fails (error() is called), the |
7609 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7610 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7611 | |
7612 | static void | |
8cdf0e15 | 7613 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 TT |
7614 | struct symtabs_and_lines sals, |
7615 | struct linespec_result *canonical, | |
8cdf0e15 VP |
7616 | char *cond_string, |
7617 | enum bptype type, enum bpdisp disposition, | |
7618 | int thread, int task, int ignore_count, | |
7619 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7620 | int enabled, int internal) |
c906108c | 7621 | { |
018d34a4 | 7622 | int i; |
cc59ec59 | 7623 | |
018d34a4 | 7624 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7625 | { |
ed0616c6 VP |
7626 | struct symtabs_and_lines expanded = |
7627 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7628 | |
7efd8fc2 | 7629 | create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i], |
8cdf0e15 | 7630 | cond_string, type, disposition, |
84f4c1fe | 7631 | thread, task, ignore_count, ops, |
56435ebe TT |
7632 | from_tty, enabled, internal, |
7633 | canonical->special_display); | |
c3f6f71d | 7634 | } |
c3f6f71d | 7635 | } |
c906108c | 7636 | |
9998af43 | 7637 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7638 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7639 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7640 | address strings. ADDRESS points to the end of the SAL. |
7641 | ||
7642 | The array and the line spec strings are allocated on the heap, it is | |
7643 | the caller's responsibility to free them. */ | |
c906108c | 7644 | |
b9362cc7 | 7645 | static void |
c3f6f71d JM |
7646 | parse_breakpoint_sals (char **address, |
7647 | struct symtabs_and_lines *sals, | |
58438ac1 | 7648 | struct linespec_result *canonical) |
c3f6f71d JM |
7649 | { |
7650 | char *addr_start = *address; | |
cc59ec59 | 7651 | |
c3f6f71d | 7652 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7653 | breakpoint. */ |
c3f6f71d JM |
7654 | if ((*address) == NULL |
7655 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7656 | { |
7657 | if (default_breakpoint_valid) | |
7658 | { | |
c3f6f71d | 7659 | struct symtab_and_line sal; |
cc59ec59 | 7660 | |
4a64f543 | 7661 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7662 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7663 | xmalloc (sizeof (struct symtab_and_line)); |
7664 | sal.pc = default_breakpoint_address; | |
7665 | sal.line = default_breakpoint_line; | |
7666 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7667 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7668 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7669 | |
4a64f543 MS |
7670 | /* "break" without arguments is equivalent to "break *PC" |
7671 | where PC is the default_breakpoint_address. So make sure | |
7672 | to set sal.explicit_pc to prevent GDB from trying to | |
7673 | expand the list of sals to include all other instances | |
7674 | with the same symtab and line. */ | |
00903456 JK |
7675 | sal.explicit_pc = 1; |
7676 | ||
c3f6f71d JM |
7677 | sals->sals[0] = sal; |
7678 | sals->nelts = 1; | |
c906108c SS |
7679 | } |
7680 | else | |
8a3fe4f8 | 7681 | error (_("No default breakpoint address now.")); |
c906108c SS |
7682 | } |
7683 | else | |
7684 | { | |
c906108c | 7685 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7686 | current_source_symtab (which is decode_line_1's default). |
7687 | This should produce the results we want almost all of the | |
7688 | time while leaving default_breakpoint_* alone. | |
7689 | ||
1aeae86e AF |
7690 | ObjC: However, don't match an Objective-C method name which |
7691 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7692 | |
c214a6fd | 7693 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7694 | |
c906108c | 7695 | if (default_breakpoint_valid |
0378c332 | 7696 | && (!cursal.symtab |
1aeae86e AF |
7697 | || ((strchr ("+-", (*address)[0]) != NULL) |
7698 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7699 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
58438ac1 | 7700 | default_breakpoint_line, canonical); |
c906108c | 7701 | else |
0101ce28 | 7702 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
58438ac1 | 7703 | canonical); |
c906108c | 7704 | } |
4a64f543 | 7705 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7efd8fc2 TT |
7706 | if (sals->nelts > 0 && canonical->canonical == NULL) |
7707 | canonical->canonical = xcalloc (sals->nelts, sizeof (char **)); | |
c3f6f71d | 7708 | if (addr_start != (*address)) |
c906108c | 7709 | { |
c3f6f71d | 7710 | int i; |
cc59ec59 | 7711 | |
c3f6f71d | 7712 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7713 | { |
4a64f543 | 7714 | /* Add the string if not present. */ |
7efd8fc2 TT |
7715 | if (canonical->canonical[i] == NULL) |
7716 | canonical->canonical[i] = savestring (addr_start, | |
7717 | (*address) - addr_start); | |
c906108c SS |
7718 | } |
7719 | } | |
c3f6f71d | 7720 | } |
c906108c | 7721 | |
c906108c | 7722 | |
c3f6f71d | 7723 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7724 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7725 | |
b9362cc7 | 7726 | static void |
23e7acfb | 7727 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7728 | { |
7729 | int i; | |
cc59ec59 | 7730 | |
c3f6f71d | 7731 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7732 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7733 | } |
7734 | ||
7a697b8d SS |
7735 | /* Fast tracepoints may have restrictions on valid locations. For |
7736 | instance, a fast tracepoint using a jump instead of a trap will | |
7737 | likely have to overwrite more bytes than a trap would, and so can | |
7738 | only be placed where the instruction is longer than the jump, or a | |
7739 | multi-instruction sequence does not have a jump into the middle of | |
7740 | it, etc. */ | |
7741 | ||
7742 | static void | |
7743 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7744 | struct symtabs_and_lines *sals) | |
7745 | { | |
7746 | int i, rslt; | |
7747 | struct symtab_and_line *sal; | |
7748 | char *msg; | |
7749 | struct cleanup *old_chain; | |
7750 | ||
7751 | for (i = 0; i < sals->nelts; i++) | |
7752 | { | |
7753 | sal = &sals->sals[i]; | |
7754 | ||
7755 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7756 | NULL, &msg); | |
7757 | old_chain = make_cleanup (xfree, msg); | |
7758 | ||
7759 | if (!rslt) | |
7760 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7761 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7762 | ||
7763 | do_cleanups (old_chain); | |
7764 | } | |
7765 | } | |
7766 | ||
018d34a4 VP |
7767 | /* Given TOK, a string specification of condition and thread, as |
7768 | accepted by the 'break' command, extract the condition | |
7769 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7770 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7771 | If no condition is found, *COND_STRING is set to NULL. |
7772 | If no thread is found, *THREAD is set to -1. */ | |
7773 | static void | |
7774 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7775 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7776 | { |
7777 | *cond_string = NULL; | |
7778 | *thread = -1; | |
7779 | while (tok && *tok) | |
7780 | { | |
7781 | char *end_tok; | |
7782 | int toklen; | |
7783 | char *cond_start = NULL; | |
7784 | char *cond_end = NULL; | |
cc59ec59 | 7785 | |
e9cafbcc | 7786 | tok = skip_spaces (tok); |
018d34a4 | 7787 | |
e9cafbcc | 7788 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7789 | |
7790 | toklen = end_tok - tok; | |
7791 | ||
7792 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7793 | { | |
f7545552 TT |
7794 | struct expression *expr; |
7795 | ||
018d34a4 | 7796 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7797 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7798 | xfree (expr); | |
018d34a4 VP |
7799 | cond_end = tok; |
7800 | *cond_string = savestring (cond_start, | |
7801 | cond_end - cond_start); | |
7802 | } | |
7803 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7804 | { | |
7805 | char *tmptok; | |
7806 | ||
7807 | tok = end_tok + 1; | |
7808 | tmptok = tok; | |
7809 | *thread = strtol (tok, &tok, 0); | |
7810 | if (tok == tmptok) | |
7811 | error (_("Junk after thread keyword.")); | |
7812 | if (!valid_thread_id (*thread)) | |
7813 | error (_("Unknown thread %d."), *thread); | |
7814 | } | |
4a306c9a JB |
7815 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7816 | { | |
7817 | char *tmptok; | |
7818 | ||
7819 | tok = end_tok + 1; | |
7820 | tmptok = tok; | |
7821 | *task = strtol (tok, &tok, 0); | |
7822 | if (tok == tmptok) | |
7823 | error (_("Junk after task keyword.")); | |
7824 | if (!valid_task_id (*task)) | |
b6199126 | 7825 | error (_("Unknown task %d."), *task); |
4a306c9a | 7826 | } |
018d34a4 VP |
7827 | else |
7828 | error (_("Junk at end of arguments.")); | |
7829 | } | |
7830 | } | |
7831 | ||
0fb4aa4b PA |
7832 | /* Decode a static tracepoint marker spec. */ |
7833 | ||
7834 | static struct symtabs_and_lines | |
7835 | decode_static_tracepoint_spec (char **arg_p) | |
7836 | { | |
7837 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7838 | struct symtabs_and_lines sals; | |
7839 | struct symtab_and_line sal; | |
7840 | struct symbol *sym; | |
7841 | struct cleanup *old_chain; | |
7842 | char *p = &(*arg_p)[3]; | |
7843 | char *endp; | |
7844 | char *marker_str; | |
7845 | int i; | |
7846 | ||
e9cafbcc | 7847 | p = skip_spaces (p); |
0fb4aa4b | 7848 | |
e9cafbcc | 7849 | endp = skip_to_space (p); |
0fb4aa4b PA |
7850 | |
7851 | marker_str = savestring (p, endp - p); | |
7852 | old_chain = make_cleanup (xfree, marker_str); | |
7853 | ||
7854 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7855 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7856 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7857 | ||
7858 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7859 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7860 | ||
7861 | for (i = 0; i < sals.nelts; i++) | |
7862 | { | |
7863 | struct static_tracepoint_marker *marker; | |
7864 | ||
7865 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7866 | ||
7867 | init_sal (&sals.sals[i]); | |
7868 | ||
7869 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7870 | sals.sals[i].pc = marker->address; | |
7871 | ||
7872 | release_static_tracepoint_marker (marker); | |
7873 | } | |
7874 | ||
7875 | do_cleanups (old_chain); | |
7876 | ||
7877 | *arg_p = endp; | |
7878 | return sals; | |
7879 | } | |
7880 | ||
fd9b8c24 PA |
7881 | /* Set a breakpoint. This function is shared between CLI and MI |
7882 | functions for setting a breakpoint. This function has two major | |
7883 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7884 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7885 | breakpoint location, address and thread. Otherwise, ARG is just |
7886 | the location of breakpoint, with condition and thread specified by | |
7887 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7888 | the breakpoint number will be allocated from the internal | |
7889 | breakpoint count. Returns true if any breakpoint was created; | |
7890 | false otherwise. */ | |
0101ce28 | 7891 | |
8cdf0e15 VP |
7892 | int |
7893 | create_breakpoint (struct gdbarch *gdbarch, | |
7894 | char *arg, char *cond_string, int thread, | |
7895 | int parse_condition_and_thread, | |
0fb4aa4b | 7896 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7897 | int ignore_count, |
7898 | enum auto_boolean pending_break_support, | |
7899 | struct breakpoint_ops *ops, | |
84f4c1fe | 7900 | int from_tty, int enabled, int internal) |
c3f6f71d | 7901 | { |
b78a6381 | 7902 | volatile struct gdb_exception e; |
c3f6f71d | 7903 | struct symtabs_and_lines sals; |
0101ce28 | 7904 | struct symtab_and_line pending_sal; |
0101ce28 | 7905 | char *copy_arg; |
c3f6f71d | 7906 | char *addr_start = arg; |
7efd8fc2 | 7907 | struct linespec_result canonical; |
c3f6f71d | 7908 | struct cleanup *old_chain; |
80c99de1 | 7909 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7910 | int i; |
0101ce28 | 7911 | int pending = 0; |
4a306c9a | 7912 | int task = 0; |
86b17b60 | 7913 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7914 | |
c3f6f71d JM |
7915 | sals.sals = NULL; |
7916 | sals.nelts = 0; | |
7efd8fc2 | 7917 | init_linespec_result (&canonical); |
c3f6f71d | 7918 | |
0fb4aa4b PA |
7919 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7920 | { | |
7921 | int i; | |
7922 | ||
7923 | sals = decode_static_tracepoint_spec (&arg); | |
7924 | ||
7925 | copy_arg = savestring (addr_start, arg - addr_start); | |
7efd8fc2 | 7926 | canonical.canonical = xcalloc (sals.nelts, sizeof (char **)); |
0fb4aa4b | 7927 | for (i = 0; i < sals.nelts; i++) |
7efd8fc2 | 7928 | canonical.canonical[i] = xstrdup (copy_arg); |
0fb4aa4b PA |
7929 | goto done; |
7930 | } | |
7931 | ||
b78a6381 TT |
7932 | TRY_CATCH (e, RETURN_MASK_ALL) |
7933 | { | |
58438ac1 | 7934 | parse_breakpoint_sals (&arg, &sals, &canonical); |
b78a6381 | 7935 | } |
0101ce28 JJ |
7936 | |
7937 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7938 | switch (e.reason) |
0101ce28 | 7939 | { |
05ff989b | 7940 | case RETURN_QUIT: |
98deb0da | 7941 | throw_exception (e); |
05ff989b AC |
7942 | case RETURN_ERROR: |
7943 | switch (e.error) | |
0101ce28 | 7944 | { |
05ff989b | 7945 | case NOT_FOUND_ERROR: |
0101ce28 | 7946 | |
05ff989b AC |
7947 | /* If pending breakpoint support is turned off, throw |
7948 | error. */ | |
fa8d40ab JJ |
7949 | |
7950 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7951 | throw_exception (e); |
7952 | ||
7953 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7954 | |
05ff989b AC |
7955 | /* If pending breakpoint support is auto query and the user |
7956 | selects no, then simply return the error code. */ | |
059fb39f | 7957 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7958 | && !nquery (_("Make breakpoint pending on " |
7959 | "future shared library load? "))) | |
fd9b8c24 | 7960 | return 0; |
fa8d40ab | 7961 | |
05ff989b AC |
7962 | /* At this point, either the user was queried about setting |
7963 | a pending breakpoint and selected yes, or pending | |
7964 | breakpoint behavior is on and thus a pending breakpoint | |
7965 | is defaulted on behalf of the user. */ | |
0101ce28 | 7966 | copy_arg = xstrdup (addr_start); |
7efd8fc2 | 7967 | canonical.canonical = ©_arg; |
0101ce28 JJ |
7968 | sals.nelts = 1; |
7969 | sals.sals = &pending_sal; | |
7970 | pending_sal.pc = 0; | |
7971 | pending = 1; | |
05ff989b AC |
7972 | break; |
7973 | default: | |
98deb0da | 7974 | throw_exception (e); |
0101ce28 | 7975 | } |
2abae994 | 7976 | break; |
05ff989b AC |
7977 | default: |
7978 | if (!sals.nelts) | |
fd9b8c24 | 7979 | return 0; |
0101ce28 | 7980 | } |
c3f6f71d | 7981 | |
0fb4aa4b PA |
7982 | done: |
7983 | ||
4a64f543 | 7984 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7985 | old_chain = make_cleanup (null_cleanup, 0); |
7986 | ||
0101ce28 JJ |
7987 | if (!pending) |
7988 | { | |
7989 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7990 | make_cleanup (xfree, sals.sals); | |
7991 | ||
7efd8fc2 TT |
7992 | /* Cleanup the canonical array but not its contents. */ |
7993 | make_cleanup (xfree, canonical.canonical); | |
0101ce28 | 7994 | } |
c3f6f71d | 7995 | |
c3f6f71d JM |
7996 | /* ----------------------------- SNIP ----------------------------- |
7997 | Anything added to the cleanup chain beyond this point is assumed | |
7998 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7999 | then the memory is not reclaimed. */ |
8000 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 8001 | |
7efd8fc2 | 8002 | /* Mark the contents of the canonical for cleanup. These go on |
80c99de1 | 8003 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
8004 | for (i = 0; i < sals.nelts; i++) |
8005 | { | |
7efd8fc2 TT |
8006 | if (canonical.canonical[i] != NULL) |
8007 | make_cleanup (xfree, canonical.canonical[i]); | |
c3f6f71d JM |
8008 | } |
8009 | ||
8010 | /* Resolve all line numbers to PC's and verify that the addresses | |
8011 | are ok for the target. */ | |
0101ce28 | 8012 | if (!pending) |
23e7acfb | 8013 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 8014 | |
7a697b8d SS |
8015 | /* Fast tracepoints may have additional restrictions on location. */ |
8016 | if (type_wanted == bp_fast_tracepoint) | |
8017 | check_fast_tracepoint_sals (gdbarch, &sals); | |
8018 | ||
c3f6f71d JM |
8019 | /* Verify that condition can be parsed, before setting any |
8020 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8021 | breakpoint. */ |
0101ce28 | 8022 | if (!pending) |
c3f6f71d | 8023 | { |
2f069f6f | 8024 | if (parse_condition_and_thread) |
72b2ff0e VP |
8025 | { |
8026 | /* Here we only parse 'arg' to separate condition | |
8027 | from thread number, so parsing in context of first | |
8028 | sal is OK. When setting the breakpoint we'll | |
8029 | re-parse it in context of each sal. */ | |
8030 | cond_string = NULL; | |
8031 | thread = -1; | |
4a306c9a JB |
8032 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
8033 | &thread, &task); | |
72b2ff0e VP |
8034 | if (cond_string) |
8035 | make_cleanup (xfree, cond_string); | |
8036 | } | |
2f069f6f | 8037 | else |
72b2ff0e VP |
8038 | { |
8039 | /* Create a private copy of condition string. */ | |
8040 | if (cond_string) | |
8041 | { | |
8042 | cond_string = xstrdup (cond_string); | |
8043 | make_cleanup (xfree, cond_string); | |
8044 | } | |
8045 | } | |
0fb4aa4b PA |
8046 | |
8047 | /* If the user is creating a static tracepoint by marker id | |
8048 | (strace -m MARKER_ID), then store the sals index, so that | |
8049 | breakpoint_re_set can try to match up which of the newly | |
8050 | found markers corresponds to this one, and, don't try to | |
8051 | expand multiple locations for each sal, given than SALS | |
8052 | already should contain all sals for MARKER_ID. */ | |
8053 | if (type_wanted == bp_static_tracepoint | |
7efd8fc2 | 8054 | && is_marker_spec (canonical.canonical[0])) |
0fb4aa4b PA |
8055 | { |
8056 | int i; | |
8057 | ||
8058 | for (i = 0; i < sals.nelts; ++i) | |
8059 | { | |
8060 | struct symtabs_and_lines expanded; | |
8061 | struct breakpoint *tp; | |
8062 | struct cleanup *old_chain; | |
8063 | ||
8064 | expanded.nelts = 1; | |
8065 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
8066 | expanded.sals[0] = sals.sals[i]; | |
8067 | old_chain = make_cleanup (xfree, expanded.sals); | |
8068 | ||
7efd8fc2 | 8069 | create_breakpoint_sal (gdbarch, expanded, canonical.canonical[i], |
0fb4aa4b PA |
8070 | cond_string, type_wanted, |
8071 | tempflag ? disp_del : disp_donttouch, | |
8072 | thread, task, ignore_count, ops, | |
56435ebe TT |
8073 | from_tty, enabled, internal, |
8074 | canonical.special_display); | |
0fb4aa4b PA |
8075 | |
8076 | do_cleanups (old_chain); | |
8077 | ||
8078 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
8079 | if (internal) |
8080 | tp = get_breakpoint (internal_breakpoint_number); | |
8081 | else | |
8082 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
8083 | gdb_assert (tp != NULL); |
8084 | ||
8085 | /* Given that its possible to have multiple markers with | |
8086 | the same string id, if the user is creating a static | |
8087 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
8088 | store the sals index, so that breakpoint_re_set can | |
8089 | try to match up which of the newly found markers | |
8090 | corresponds to this one */ | |
8091 | tp->static_trace_marker_id_idx = i; | |
8092 | } | |
8093 | } | |
8094 | else | |
7efd8fc2 | 8095 | create_breakpoints_sal (gdbarch, sals, &canonical, cond_string, |
3e43a32a MS |
8096 | type_wanted, |
8097 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 8098 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 8099 | enabled, internal); |
c906108c | 8100 | } |
0101ce28 JJ |
8101 | else |
8102 | { | |
0101ce28 JJ |
8103 | struct breakpoint *b; |
8104 | ||
0101ce28 JJ |
8105 | make_cleanup (xfree, copy_arg); |
8106 | ||
a6d9a66e | 8107 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 8108 | set_breakpoint_number (internal, b); |
72b2ff0e | 8109 | b->thread = -1; |
7efd8fc2 | 8110 | b->addr_string = canonical.canonical[0]; |
72b2ff0e | 8111 | b->cond_string = NULL; |
0101ce28 | 8112 | b->ignore_count = ignore_count; |
0101ce28 | 8113 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8114 | b->condition_not_parsed = 1; |
604133b5 | 8115 | b->ops = ops; |
41447f92 | 8116 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 8117 | b->pspace = current_program_space; |
84f4c1fe | 8118 | b->py_bp_object = NULL; |
74960c60 | 8119 | |
6c95b8df | 8120 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
8121 | && (b->type == bp_breakpoint |
8122 | || b->type == bp_hardware_breakpoint)) | |
8123 | b->enable_state = bp_startup_disabled; | |
8124 | ||
84f4c1fe PM |
8125 | if (internal) |
8126 | /* Do not mention breakpoints with a negative number, | |
8127 | but do notify observers. */ | |
8128 | observer_notify_breakpoint_created (b->number); | |
8129 | else | |
8130 | mention (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) | |
8583 | canonical_end.canonical = xcalloc (1, sizeof (char **)); | |
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); | |
8634 | update_global_location_list (1); | |
8635 | } | |
8636 | ||
4a64f543 MS |
8637 | /* Return non-zero if EXP is verified as constant. Returned zero |
8638 | means EXP is variable. Also the constant detection may fail for | |
8639 | some constant expressions and in such case still falsely return | |
8640 | zero. */ | |
65d79d4b SDJ |
8641 | static int |
8642 | watchpoint_exp_is_const (const struct expression *exp) | |
8643 | { | |
8644 | int i = exp->nelts; | |
8645 | ||
8646 | while (i > 0) | |
8647 | { | |
8648 | int oplenp, argsp; | |
8649 | ||
8650 | /* We are only interested in the descriptor of each element. */ | |
8651 | operator_length (exp, i, &oplenp, &argsp); | |
8652 | i -= oplenp; | |
8653 | ||
8654 | switch (exp->elts[i].opcode) | |
8655 | { | |
8656 | case BINOP_ADD: | |
8657 | case BINOP_SUB: | |
8658 | case BINOP_MUL: | |
8659 | case BINOP_DIV: | |
8660 | case BINOP_REM: | |
8661 | case BINOP_MOD: | |
8662 | case BINOP_LSH: | |
8663 | case BINOP_RSH: | |
8664 | case BINOP_LOGICAL_AND: | |
8665 | case BINOP_LOGICAL_OR: | |
8666 | case BINOP_BITWISE_AND: | |
8667 | case BINOP_BITWISE_IOR: | |
8668 | case BINOP_BITWISE_XOR: | |
8669 | case BINOP_EQUAL: | |
8670 | case BINOP_NOTEQUAL: | |
8671 | case BINOP_LESS: | |
8672 | case BINOP_GTR: | |
8673 | case BINOP_LEQ: | |
8674 | case BINOP_GEQ: | |
8675 | case BINOP_REPEAT: | |
8676 | case BINOP_COMMA: | |
8677 | case BINOP_EXP: | |
8678 | case BINOP_MIN: | |
8679 | case BINOP_MAX: | |
8680 | case BINOP_INTDIV: | |
8681 | case BINOP_CONCAT: | |
8682 | case BINOP_IN: | |
8683 | case BINOP_RANGE: | |
8684 | case TERNOP_COND: | |
8685 | case TERNOP_SLICE: | |
8686 | case TERNOP_SLICE_COUNT: | |
8687 | ||
8688 | case OP_LONG: | |
8689 | case OP_DOUBLE: | |
8690 | case OP_DECFLOAT: | |
8691 | case OP_LAST: | |
8692 | case OP_COMPLEX: | |
8693 | case OP_STRING: | |
8694 | case OP_BITSTRING: | |
8695 | case OP_ARRAY: | |
8696 | case OP_TYPE: | |
8697 | case OP_NAME: | |
8698 | case OP_OBJC_NSSTRING: | |
8699 | ||
8700 | case UNOP_NEG: | |
8701 | case UNOP_LOGICAL_NOT: | |
8702 | case UNOP_COMPLEMENT: | |
8703 | case UNOP_ADDR: | |
8704 | case UNOP_HIGH: | |
4a64f543 MS |
8705 | /* Unary, binary and ternary operators: We have to check |
8706 | their operands. If they are constant, then so is the | |
8707 | result of that operation. For instance, if A and B are | |
8708 | determined to be constants, then so is "A + B". | |
8709 | ||
8710 | UNOP_IND is one exception to the rule above, because the | |
8711 | value of *ADDR is not necessarily a constant, even when | |
8712 | ADDR is. */ | |
65d79d4b SDJ |
8713 | break; |
8714 | ||
8715 | case OP_VAR_VALUE: | |
8716 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8717 | |
65d79d4b | 8718 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8719 | possible that a buggy compiler could mark a variable as |
8720 | constant even when it is not, and TYPE_CONST would return | |
8721 | true in this case, while SYMBOL_CLASS wouldn't. | |
8722 | ||
8723 | We also have to check for function symbols because they | |
8724 | are always constant. */ | |
65d79d4b SDJ |
8725 | { |
8726 | struct symbol *s = exp->elts[i + 2].symbol; | |
8727 | ||
8728 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8729 | && SYMBOL_CLASS (s) != LOC_CONST | |
8730 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8731 | return 0; | |
8732 | break; | |
8733 | } | |
8734 | ||
8735 | /* The default action is to return 0 because we are using | |
8736 | the optimistic approach here: If we don't know something, | |
8737 | then it is not a constant. */ | |
8738 | default: | |
8739 | return 0; | |
8740 | } | |
8741 | } | |
8742 | ||
8743 | return 1; | |
8744 | } | |
8745 | ||
77b06cd7 TJB |
8746 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8747 | ||
8748 | static int | |
8749 | insert_watchpoint (struct bp_location *bl) | |
8750 | { | |
e09342b5 TJB |
8751 | int length = bl->owner->exact? 1 : bl->length; |
8752 | ||
8753 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
8754 | bl->owner->cond_exp); | |
77b06cd7 TJB |
8755 | } |
8756 | ||
8757 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8758 | ||
8759 | static int | |
8760 | remove_watchpoint (struct bp_location *bl) | |
8761 | { | |
e09342b5 TJB |
8762 | int length = bl->owner->exact? 1 : bl->length; |
8763 | ||
8764 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
8765 | bl->owner->cond_exp); | |
8766 | } | |
8767 | ||
8768 | /* Implement the "resources_needed" breakpoint_ops method for | |
8769 | hardware watchpoints. */ | |
8770 | ||
8771 | static int | |
8772 | resources_needed_watchpoint (const struct bp_location *bl) | |
8773 | { | |
90e4670f | 8774 | int length = bl->owner->exact? 1 : bl->length; |
e09342b5 | 8775 | |
90e4670f | 8776 | return target_region_ok_for_hw_watchpoint (bl->address, length); |
77b06cd7 TJB |
8777 | } |
8778 | ||
8779 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8780 | ||
8781 | static struct breakpoint_ops watchpoint_breakpoint_ops = | |
8782 | { | |
8783 | insert_watchpoint, | |
8784 | remove_watchpoint, | |
8785 | NULL, /* breakpoint_hit */ | |
e09342b5 | 8786 | resources_needed_watchpoint, |
77b06cd7 TJB |
8787 | NULL, /* print_it */ |
8788 | NULL, /* print_one */ | |
f1310107 | 8789 | NULL, /* print_one_detail */ |
77b06cd7 TJB |
8790 | NULL, /* print_mention */ |
8791 | NULL /* print_recreate */ | |
8792 | }; | |
8793 | ||
53a5351d JM |
8794 | /* accessflag: hw_write: watch write, |
8795 | hw_read: watch read, | |
8796 | hw_access: watch access (read or write) */ | |
c906108c | 8797 | static void |
84f4c1fe PM |
8798 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8799 | int just_location, int internal) | |
c906108c | 8800 | { |
d983da9c | 8801 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8802 | struct expression *exp; |
60e1c644 | 8803 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8804 | struct value *val, *mark, *result; |
c906108c | 8805 | struct frame_info *frame; |
c906108c SS |
8806 | char *exp_start = NULL; |
8807 | char *exp_end = NULL; | |
37e4754d | 8808 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8809 | int toklen; |
8810 | char *cond_start = NULL; | |
8811 | char *cond_end = NULL; | |
c906108c SS |
8812 | int i, other_type_used, target_resources_ok = 0; |
8813 | enum bptype bp_type; | |
e09342b5 | 8814 | int reg_cnt = 0; |
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 | |
e09342b5 TJB |
8944 | reg_cnt = can_use_hardware_watchpoint (val, target_exact_watchpoints); |
8945 | if (reg_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8946 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
e09342b5 | 8947 | if (reg_cnt != 0) |
c5aa993b JM |
8948 | { |
8949 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8950 | target_resources_ok = |
e09342b5 | 8951 | target_can_use_hardware_watchpoint (bp_type, i + reg_cnt, |
53a5351d | 8952 | other_type_used); |
c5aa993b | 8953 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8954 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8955 | |
c5aa993b | 8956 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
3e43a32a MS |
8957 | error (_("Target can only support one kind " |
8958 | "of HW watchpoint at a time.")); | |
c5aa993b | 8959 | } |
c906108c | 8960 | |
4a64f543 MS |
8961 | /* Change the type of breakpoint to an ordinary watchpoint if a |
8962 | hardware watchpoint could not be set. */ | |
e09342b5 | 8963 | if (!reg_cnt || target_resources_ok <= 0) |
4d28f7a8 KB |
8964 | bp_type = bp_watchpoint; |
8965 | ||
d983da9c | 8966 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8967 | |
8968 | /* If the expression is "local", then set up a "watchpoint scope" | |
8969 | breakpoint at the point where we've left the scope of the watchpoint | |
8970 | expression. Create the scope breakpoint before the watchpoint, so | |
8971 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8972 | if (exp_valid_block && frame) |
d983da9c | 8973 | { |
edb3359d DJ |
8974 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8975 | { | |
8976 | scope_breakpoint | |
a6d9a66e UW |
8977 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8978 | frame_unwind_caller_pc (frame), | |
edb3359d | 8979 | bp_watchpoint_scope); |
d983da9c | 8980 | |
edb3359d | 8981 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8982 | |
edb3359d DJ |
8983 | /* Automatically delete the breakpoint when it hits. */ |
8984 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8985 | |
edb3359d DJ |
8986 | /* Only break in the proper frame (help with recursion). */ |
8987 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8988 | |
edb3359d | 8989 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8990 | scope_breakpoint->loc->gdbarch |
8991 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8992 | scope_breakpoint->loc->requested_address |
8993 | = frame_unwind_caller_pc (frame); | |
8994 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8995 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8996 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8997 | scope_breakpoint->type); |
8998 | } | |
d983da9c DJ |
8999 | } |
9000 | ||
c906108c | 9001 | /* Now set up the breakpoint. */ |
2d134ed3 | 9002 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 9003 | set_breakpoint_number (internal, b); |
37e4754d | 9004 | b->thread = thread; |
b5de0fa7 | 9005 | b->disposition = disp_donttouch; |
c906108c SS |
9006 | b->exp = exp; |
9007 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 9008 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
9009 | if (just_location) |
9010 | { | |
9011 | struct type *t = value_type (val); | |
9012 | CORE_ADDR addr = value_as_address (val); | |
9013 | char *name; | |
9014 | ||
9015 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
9016 | name = type_to_string (t); | |
9017 | ||
d63d0675 JK |
9018 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
9019 | core_addr_to_string (addr)); | |
06a64a0b TT |
9020 | xfree (name); |
9021 | ||
d63d0675 JK |
9022 | b->exp_string = xstrprintf ("-location: %.*s", |
9023 | (int) (exp_end - exp_start), exp_start); | |
9024 | ||
06a64a0b TT |
9025 | /* The above expression is in C. */ |
9026 | b->language = language_c; | |
9027 | } | |
9028 | else | |
9029 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 9030 | b->val = val; |
fa4727a6 | 9031 | b->val_valid = 1; |
77b06cd7 TJB |
9032 | b->ops = &watchpoint_breakpoint_ops; |
9033 | ||
e09342b5 TJB |
9034 | /* Use an exact watchpoint when there's only one memory region to be |
9035 | watched, and only one debug register is needed to watch it. */ | |
9036 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
9037 | ||
c906108c SS |
9038 | if (cond_start) |
9039 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9040 | else | |
9041 | b->cond_string = 0; | |
c5aa993b | 9042 | |
c906108c | 9043 | if (frame) |
f6bc2008 PA |
9044 | { |
9045 | b->watchpoint_frame = get_frame_id (frame); | |
9046 | b->watchpoint_thread = inferior_ptid; | |
9047 | } | |
c906108c | 9048 | else |
f6bc2008 PA |
9049 | { |
9050 | b->watchpoint_frame = null_frame_id; | |
9051 | b->watchpoint_thread = null_ptid; | |
9052 | } | |
c906108c | 9053 | |
d983da9c | 9054 | if (scope_breakpoint != NULL) |
c906108c | 9055 | { |
d983da9c DJ |
9056 | /* The scope breakpoint is related to the watchpoint. We will |
9057 | need to act on them together. */ | |
9058 | b->related_breakpoint = scope_breakpoint; | |
9059 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9060 | } |
d983da9c | 9061 | |
06a64a0b TT |
9062 | if (!just_location) |
9063 | value_free_to_mark (mark); | |
2d134ed3 PA |
9064 | |
9065 | /* Finally update the new watchpoint. This creates the locations | |
9066 | that should be inserted. */ | |
9067 | update_watchpoint (b, 1); | |
84f4c1fe PM |
9068 | if (internal) |
9069 | /* Do not mention breakpoints with a negative number, but do | |
9070 | notify observers. */ | |
9071 | observer_notify_breakpoint_created (b->number); | |
9072 | else | |
9073 | mention (b); | |
b60e7edf | 9074 | update_global_location_list (1); |
c906108c SS |
9075 | } |
9076 | ||
e09342b5 TJB |
9077 | /* Return count of debug registers needed to watch the given expression. |
9078 | If EXACT_WATCHPOINTS is 1, then consider that only the address of | |
9079 | the start of the watched region will be monitored (i.e., all accesses | |
9080 | will be aligned). This uses less debug registers on some targets. | |
9081 | ||
9082 | If the watchpoint cannot be handled in hardware return zero. */ | |
c906108c | 9083 | |
c906108c | 9084 | static int |
e09342b5 | 9085 | can_use_hardware_watchpoint (struct value *v, int exact_watchpoints) |
c906108c SS |
9086 | { |
9087 | int found_memory_cnt = 0; | |
2e70b7b9 | 9088 | struct value *head = v; |
c906108c SS |
9089 | |
9090 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9091 | if (!can_use_hw_watchpoints) |
c906108c | 9092 | return 0; |
c5aa993b | 9093 | |
5c44784c JM |
9094 | /* Make sure that the value of the expression depends only upon |
9095 | memory contents, and values computed from them within GDB. If we | |
9096 | find any register references or function calls, we can't use a | |
9097 | hardware watchpoint. | |
9098 | ||
9099 | The idea here is that evaluating an expression generates a series | |
9100 | of values, one holding the value of every subexpression. (The | |
9101 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9102 | a*b+c.) GDB's values hold almost enough information to establish | |
9103 | the criteria given above --- they identify memory lvalues, | |
9104 | register lvalues, computed values, etcetera. So we can evaluate | |
9105 | the expression, and then scan the chain of values that leaves | |
9106 | behind to decide whether we can detect any possible change to the | |
9107 | expression's final value using only hardware watchpoints. | |
9108 | ||
9109 | However, I don't think that the values returned by inferior | |
9110 | function calls are special in any way. So this function may not | |
9111 | notice that an expression involving an inferior function call | |
9112 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9113 | for (; v; v = value_next (v)) |
c906108c | 9114 | { |
5c44784c | 9115 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9116 | { |
8464be76 DJ |
9117 | if (v != head && value_lazy (v)) |
9118 | /* A lazy memory lvalue in the chain is one that GDB never | |
9119 | needed to fetch; we either just used its address (e.g., | |
9120 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9121 | in `a,b'). This doesn't apply to HEAD; if that is | |
9122 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9123 | ; |
53a5351d | 9124 | else |
5c44784c JM |
9125 | { |
9126 | /* Ahh, memory we actually used! Check if we can cover | |
9127 | it with hardware watchpoints. */ | |
df407dfe | 9128 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9129 | |
9130 | /* We only watch structs and arrays if user asked for it | |
9131 | explicitly, never if they just happen to appear in a | |
9132 | middle of some value chain. */ | |
9133 | if (v == head | |
9134 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9135 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9136 | { | |
42ae5230 | 9137 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9138 | int len; |
9139 | int num_regs; | |
9140 | ||
9141 | len = (exact_watchpoints | |
9142 | && is_scalar_type_recursive (vtype))? | |
9143 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9144 | |
e09342b5 TJB |
9145 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9146 | if (!num_regs) | |
2e70b7b9 MS |
9147 | return 0; |
9148 | else | |
e09342b5 | 9149 | found_memory_cnt += num_regs; |
2e70b7b9 | 9150 | } |
5c44784c | 9151 | } |
c5aa993b | 9152 | } |
5086187c AC |
9153 | else if (VALUE_LVAL (v) != not_lval |
9154 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9155 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9156 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9157 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9158 | } |
9159 | ||
9160 | /* The expression itself looks suitable for using a hardware | |
9161 | watchpoint, but give the target machine a chance to reject it. */ | |
9162 | return found_memory_cnt; | |
9163 | } | |
9164 | ||
8b93c638 | 9165 | void |
84f4c1fe | 9166 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9167 | { |
84f4c1fe | 9168 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9169 | } |
9170 | ||
9171 | /* A helper function that looks for an argument at the start of a | |
9172 | string. The argument must also either be at the end of the string, | |
9173 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9174 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9175 | ||
9176 | static int | |
9177 | check_for_argument (char **str, char *arg, int arg_len) | |
9178 | { | |
9179 | if (strncmp (*str, arg, arg_len) == 0 | |
9180 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9181 | { | |
9182 | *str += arg_len; | |
9183 | return 1; | |
9184 | } | |
9185 | return 0; | |
9186 | } | |
9187 | ||
9188 | /* A helper function that looks for the "-location" argument and then | |
9189 | calls watch_command_1. */ | |
9190 | ||
9191 | static void | |
9192 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9193 | { | |
9194 | int just_location = 0; | |
9195 | ||
9196 | if (arg | |
9197 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9198 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9199 | { | |
e9cafbcc | 9200 | arg = skip_spaces (arg); |
06a64a0b TT |
9201 | just_location = 1; |
9202 | } | |
9203 | ||
84f4c1fe | 9204 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9205 | } |
8926118c | 9206 | |
c5aa993b | 9207 | static void |
fba45db2 | 9208 | watch_command (char *arg, int from_tty) |
c906108c | 9209 | { |
06a64a0b | 9210 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9211 | } |
9212 | ||
8b93c638 | 9213 | void |
84f4c1fe | 9214 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9215 | { |
84f4c1fe | 9216 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9217 | } |
8926118c | 9218 | |
c5aa993b | 9219 | static void |
fba45db2 | 9220 | rwatch_command (char *arg, int from_tty) |
c906108c | 9221 | { |
06a64a0b | 9222 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9223 | } |
9224 | ||
8b93c638 | 9225 | void |
84f4c1fe | 9226 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9227 | { |
84f4c1fe | 9228 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9229 | } |
8926118c | 9230 | |
c5aa993b | 9231 | static void |
fba45db2 | 9232 | awatch_command (char *arg, int from_tty) |
c906108c | 9233 | { |
06a64a0b | 9234 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9235 | } |
c906108c | 9236 | \f |
c5aa993b | 9237 | |
43ff13b4 | 9238 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9239 | because it uses the mechanisms of breakpoints. */ |
9240 | ||
bfec99b2 PA |
9241 | struct until_break_command_continuation_args |
9242 | { | |
9243 | struct breakpoint *breakpoint; | |
9244 | struct breakpoint *breakpoint2; | |
186c406b | 9245 | int thread_num; |
bfec99b2 PA |
9246 | }; |
9247 | ||
43ff13b4 | 9248 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9249 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9250 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9251 | command. */ |
c2c6d25f | 9252 | static void |
604ead4a | 9253 | until_break_command_continuation (void *arg) |
43ff13b4 | 9254 | { |
bfec99b2 PA |
9255 | struct until_break_command_continuation_args *a = arg; |
9256 | ||
9257 | delete_breakpoint (a->breakpoint); | |
9258 | if (a->breakpoint2) | |
9259 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9260 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9261 | } |
9262 | ||
c906108c | 9263 | void |
ae66c1fc | 9264 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9265 | { |
9266 | struct symtabs_and_lines sals; | |
9267 | struct symtab_and_line sal; | |
206415a3 | 9268 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9269 | struct breakpoint *breakpoint; |
f107f563 | 9270 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9271 | struct cleanup *old_chain; |
186c406b TT |
9272 | int thread; |
9273 | struct thread_info *tp; | |
c906108c SS |
9274 | |
9275 | clear_proceed_status (); | |
9276 | ||
9277 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9278 | this function. */ |
c5aa993b | 9279 | |
c906108c SS |
9280 | if (default_breakpoint_valid) |
9281 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
58438ac1 | 9282 | default_breakpoint_line, NULL); |
c906108c | 9283 | else |
58438ac1 | 9284 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL); |
c5aa993b | 9285 | |
c906108c | 9286 | if (sals.nelts != 1) |
8a3fe4f8 | 9287 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9288 | |
c906108c | 9289 | sal = sals.sals[0]; |
4a64f543 | 9290 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9291 | |
c906108c | 9292 | if (*arg) |
8a3fe4f8 | 9293 | error (_("Junk at end of arguments.")); |
c5aa993b | 9294 | |
c906108c | 9295 | resolve_sal_pc (&sal); |
c5aa993b | 9296 | |
ae66c1fc EZ |
9297 | if (anywhere) |
9298 | /* If the user told us to continue until a specified location, | |
9299 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9300 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9301 | null_frame_id, bp_until); | |
ae66c1fc | 9302 | else |
4a64f543 MS |
9303 | /* Otherwise, specify the selected frame, because we want to stop |
9304 | only at the very same frame. */ | |
a6d9a66e UW |
9305 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9306 | get_stack_frame_id (frame), | |
ae66c1fc | 9307 | bp_until); |
c5aa993b | 9308 | |
f107f563 | 9309 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9310 | |
186c406b TT |
9311 | tp = inferior_thread (); |
9312 | thread = tp->num; | |
9313 | ||
ae66c1fc EZ |
9314 | /* Keep within the current frame, or in frames called by the current |
9315 | one. */ | |
edb3359d DJ |
9316 | |
9317 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9318 | { |
edb3359d DJ |
9319 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9320 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9321 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9322 | sal, | |
edb3359d | 9323 | frame_unwind_caller_id (frame), |
f107f563 VP |
9324 | bp_until); |
9325 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9326 | |
9327 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9328 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9329 | } |
c5aa993b | 9330 | |
c906108c | 9331 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9332 | |
4a64f543 MS |
9333 | /* If we are running asynchronously, and proceed call above has |
9334 | actually managed to start the target, arrange for breakpoints to | |
9335 | be deleted when the target stops. Otherwise, we're already | |
9336 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9337 | |
8ea051c5 | 9338 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9339 | { |
bfec99b2 PA |
9340 | struct until_break_command_continuation_args *args; |
9341 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9342 | |
bfec99b2 PA |
9343 | args->breakpoint = breakpoint; |
9344 | args->breakpoint2 = breakpoint2; | |
186c406b | 9345 | args->thread_num = thread; |
f107f563 VP |
9346 | |
9347 | discard_cleanups (old_chain); | |
95e54da7 PA |
9348 | add_continuation (inferior_thread (), |
9349 | until_break_command_continuation, args, | |
604ead4a | 9350 | xfree); |
f107f563 VP |
9351 | } |
9352 | else | |
c5aa993b | 9353 | do_cleanups (old_chain); |
c906108c | 9354 | } |
ae66c1fc | 9355 | |
c906108c SS |
9356 | /* This function attempts to parse an optional "if <cond>" clause |
9357 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9358 | |
c906108c SS |
9359 | Else, it returns a pointer to the condition string. (It does not |
9360 | attempt to evaluate the string against a particular block.) And, | |
9361 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9362 | if clause in the arg string. */ |
53a5351d | 9363 | |
c906108c | 9364 | static char * |
fba45db2 | 9365 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9366 | { |
c5aa993b JM |
9367 | char *cond_string; |
9368 | ||
9369 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9370 | return NULL; |
c5aa993b | 9371 | |
4a64f543 | 9372 | /* Skip the "if" keyword. */ |
c906108c | 9373 | (*arg) += 2; |
c5aa993b | 9374 | |
c906108c | 9375 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9376 | condition string. */ |
e9cafbcc | 9377 | *arg = skip_spaces (*arg); |
c906108c | 9378 | cond_string = *arg; |
c5aa993b | 9379 | |
4a64f543 MS |
9380 | /* Assume that the condition occupies the remainder of the arg |
9381 | string. */ | |
c906108c | 9382 | (*arg) += strlen (cond_string); |
c5aa993b | 9383 | |
c906108c SS |
9384 | return cond_string; |
9385 | } | |
c5aa993b | 9386 | |
c906108c SS |
9387 | /* Commands to deal with catching events, such as signals, exceptions, |
9388 | process start/exit, etc. */ | |
c5aa993b JM |
9389 | |
9390 | typedef enum | |
9391 | { | |
44feb3ce TT |
9392 | catch_fork_temporary, catch_vfork_temporary, |
9393 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9394 | } |
9395 | catch_fork_kind; | |
9396 | ||
c906108c | 9397 | static void |
cc59ec59 MS |
9398 | catch_fork_command_1 (char *arg, int from_tty, |
9399 | struct cmd_list_element *command) | |
c906108c | 9400 | { |
a6d9a66e | 9401 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9402 | char *cond_string = NULL; |
44feb3ce TT |
9403 | catch_fork_kind fork_kind; |
9404 | int tempflag; | |
9405 | ||
9406 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9407 | tempflag = (fork_kind == catch_fork_temporary | |
9408 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9409 | |
44feb3ce TT |
9410 | if (!arg) |
9411 | arg = ""; | |
e9cafbcc | 9412 | arg = skip_spaces (arg); |
c5aa993b | 9413 | |
c906108c | 9414 | /* The allowed syntax is: |
c5aa993b JM |
9415 | catch [v]fork |
9416 | catch [v]fork if <cond> | |
9417 | ||
4a64f543 | 9418 | First, check if there's an if clause. */ |
c906108c | 9419 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9420 | |
c906108c | 9421 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9422 | error (_("Junk at end of arguments.")); |
c5aa993b | 9423 | |
c906108c | 9424 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9425 | and enable reporting of such events. */ |
c5aa993b JM |
9426 | switch (fork_kind) |
9427 | { | |
44feb3ce TT |
9428 | case catch_fork_temporary: |
9429 | case catch_fork_permanent: | |
a6d9a66e | 9430 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9431 | &catch_fork_breakpoint_ops); |
c906108c | 9432 | break; |
44feb3ce TT |
9433 | case catch_vfork_temporary: |
9434 | case catch_vfork_permanent: | |
a6d9a66e | 9435 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9436 | &catch_vfork_breakpoint_ops); |
c906108c | 9437 | break; |
c5aa993b | 9438 | default: |
8a3fe4f8 | 9439 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9440 | break; |
c5aa993b | 9441 | } |
c906108c SS |
9442 | } |
9443 | ||
9444 | static void | |
cc59ec59 MS |
9445 | catch_exec_command_1 (char *arg, int from_tty, |
9446 | struct cmd_list_element *command) | |
c906108c | 9447 | { |
a6d9a66e | 9448 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9449 | int tempflag; |
c5aa993b | 9450 | char *cond_string = NULL; |
c906108c | 9451 | |
44feb3ce TT |
9452 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9453 | ||
9454 | if (!arg) | |
9455 | arg = ""; | |
e9cafbcc | 9456 | arg = skip_spaces (arg); |
c906108c SS |
9457 | |
9458 | /* The allowed syntax is: | |
c5aa993b JM |
9459 | catch exec |
9460 | catch exec if <cond> | |
c906108c | 9461 | |
4a64f543 | 9462 | First, check if there's an if clause. */ |
c906108c SS |
9463 | cond_string = ep_parse_optional_if_clause (&arg); |
9464 | ||
9465 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9466 | error (_("Junk at end of arguments.")); |
c906108c SS |
9467 | |
9468 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 9469 | and enable reporting of such events. */ |
a6d9a66e UW |
9470 | create_catchpoint (gdbarch, tempflag, cond_string, |
9471 | &catch_exec_breakpoint_ops); | |
c906108c | 9472 | } |
c5aa993b | 9473 | |
3086aeae DJ |
9474 | static enum print_stop_action |
9475 | print_exception_catchpoint (struct breakpoint *b) | |
9476 | { | |
ade92717 | 9477 | int bp_temp, bp_throw; |
3086aeae | 9478 | |
ade92717 | 9479 | annotate_catchpoint (b->number); |
3086aeae | 9480 | |
ade92717 AR |
9481 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9482 | if (b->loc->address != b->loc->requested_address) | |
9483 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9484 | b->loc->address, | |
9485 | b->number, 1); | |
df2b6d2d | 9486 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9487 | ui_out_text (uiout, |
9488 | bp_temp ? "Temporary catchpoint " | |
9489 | : "Catchpoint "); | |
9490 | if (!ui_out_is_mi_like_p (uiout)) | |
9491 | ui_out_field_int (uiout, "bkptno", b->number); | |
9492 | ui_out_text (uiout, | |
c0b37c48 AR |
9493 | bp_throw ? " (exception thrown), " |
9494 | : " (exception caught), "); | |
ade92717 AR |
9495 | if (ui_out_is_mi_like_p (uiout)) |
9496 | { | |
9497 | ui_out_field_string (uiout, "reason", | |
9498 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9499 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9500 | ui_out_field_int (uiout, "bkptno", b->number); | |
9501 | } | |
3086aeae DJ |
9502 | return PRINT_SRC_AND_LOC; |
9503 | } | |
9504 | ||
9505 | static void | |
cc59ec59 MS |
9506 | print_one_exception_catchpoint (struct breakpoint *b, |
9507 | struct bp_location **last_loc) | |
3086aeae | 9508 | { |
79a45b7d | 9509 | struct value_print_options opts; |
cc59ec59 | 9510 | |
79a45b7d TT |
9511 | get_user_print_options (&opts); |
9512 | if (opts.addressprint) | |
3086aeae DJ |
9513 | { |
9514 | annotate_field (4); | |
604133b5 AR |
9515 | if (b->loc == NULL || b->loc->shlib_disabled) |
9516 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9517 | else | |
5af949e3 UW |
9518 | ui_out_field_core_addr (uiout, "addr", |
9519 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9520 | } |
9521 | annotate_field (5); | |
604133b5 | 9522 | if (b->loc) |
a6d9a66e | 9523 | *last_loc = b->loc; |
3086aeae DJ |
9524 | if (strstr (b->addr_string, "throw") != NULL) |
9525 | ui_out_field_string (uiout, "what", "exception throw"); | |
9526 | else | |
9527 | ui_out_field_string (uiout, "what", "exception catch"); | |
9528 | } | |
9529 | ||
9530 | static void | |
9531 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9532 | { | |
ade92717 AR |
9533 | int bp_temp; |
9534 | int bp_throw; | |
9535 | ||
df2b6d2d | 9536 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9537 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9538 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9539 | : _("Catchpoint ")); | |
9540 | ui_out_field_int (uiout, "bkptno", b->number); | |
9541 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9542 | : _(" (catch)")); | |
3086aeae DJ |
9543 | } |
9544 | ||
6149aea9 PA |
9545 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9546 | catch catchpoints. */ | |
9547 | ||
9548 | static void | |
4a64f543 MS |
9549 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9550 | struct ui_file *fp) | |
6149aea9 PA |
9551 | { |
9552 | int bp_temp; | |
9553 | int bp_throw; | |
9554 | ||
9555 | bp_temp = b->disposition == disp_del; | |
9556 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9557 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9558 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
9559 | } | |
9560 | ||
3086aeae | 9561 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
9562 | NULL, /* insert */ |
9563 | NULL, /* remove */ | |
9564 | NULL, /* breakpoint_hit */ | |
e09342b5 | 9565 | NULL, /* resources_needed */ |
3086aeae DJ |
9566 | print_exception_catchpoint, |
9567 | print_one_exception_catchpoint, | |
f1310107 | 9568 | NULL, /* print_one_detail */ |
6149aea9 PA |
9569 | print_mention_exception_catchpoint, |
9570 | print_recreate_exception_catchpoint | |
3086aeae DJ |
9571 | }; |
9572 | ||
9573 | static int | |
9574 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9575 | enum exception_event_kind ex_event, int from_tty) | |
9576 | { | |
604133b5 AR |
9577 | char *trigger_func_name; |
9578 | ||
3086aeae | 9579 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9580 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9581 | else |
604133b5 | 9582 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9583 | |
8cdf0e15 VP |
9584 | create_breakpoint (get_current_arch (), |
9585 | trigger_func_name, cond_string, -1, | |
9586 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9587 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9588 | 0, |
9589 | AUTO_BOOLEAN_TRUE /* pending */, | |
9590 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9591 | 1 /* enabled */, |
9592 | 0 /* internal */); | |
3086aeae | 9593 | |
3086aeae DJ |
9594 | return 1; |
9595 | } | |
9596 | ||
4a64f543 | 9597 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9598 | |
9599 | static void | |
fba45db2 KB |
9600 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9601 | int tempflag, int from_tty) | |
c906108c | 9602 | { |
c5aa993b | 9603 | char *cond_string = NULL; |
c5aa993b | 9604 | |
44feb3ce TT |
9605 | if (!arg) |
9606 | arg = ""; | |
e9cafbcc | 9607 | arg = skip_spaces (arg); |
c5aa993b | 9608 | |
c906108c SS |
9609 | cond_string = ep_parse_optional_if_clause (&arg); |
9610 | ||
9611 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9612 | error (_("Junk at end of arguments.")); |
c906108c | 9613 | |
059fb39f PM |
9614 | if (ex_event != EX_EVENT_THROW |
9615 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9616 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9617 | |
3086aeae DJ |
9618 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9619 | return; | |
9620 | ||
8a3fe4f8 | 9621 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9622 | } |
9623 | ||
44feb3ce TT |
9624 | /* Implementation of "catch catch" command. */ |
9625 | ||
9626 | static void | |
9627 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9628 | { | |
9629 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9630 | |
44feb3ce TT |
9631 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9632 | } | |
9633 | ||
9634 | /* Implementation of "catch throw" command. */ | |
9635 | ||
9636 | static void | |
9637 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9638 | { | |
9639 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9640 | |
44feb3ce TT |
9641 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9642 | } | |
9643 | ||
f7f9143b JB |
9644 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9645 | ||
9646 | static void | |
a6d9a66e UW |
9647 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9648 | struct symtab_and_line sal, | |
f7f9143b JB |
9649 | char *addr_string, |
9650 | char *exp_string, | |
9651 | char *cond_string, | |
9652 | struct expression *cond, | |
9653 | struct breakpoint_ops *ops, | |
9654 | int tempflag, | |
9655 | int from_tty) | |
9656 | { | |
9657 | struct breakpoint *b; | |
9658 | ||
9659 | if (from_tty) | |
9660 | { | |
5af949e3 UW |
9661 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9662 | if (!loc_gdbarch) | |
9663 | loc_gdbarch = gdbarch; | |
9664 | ||
6c95b8df PA |
9665 | describe_other_breakpoints (loc_gdbarch, |
9666 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9667 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9668 | version for exception catchpoints, because two catchpoints | |
9669 | used for different exception names will use the same address. | |
9670 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9671 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9672 | inapropriate, we should use the word catchpoint, and tell |
9673 | the user what type of catchpoint it is. The above is good | |
9674 | enough for now, though. */ | |
9675 | } | |
9676 | ||
a6d9a66e | 9677 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9678 | set_breakpoint_count (breakpoint_count + 1); |
9679 | ||
9680 | b->enable_state = bp_enabled; | |
9681 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9682 | b->number = breakpoint_count; | |
9683 | b->ignore_count = 0; | |
511a6cd4 | 9684 | b->loc->cond = cond; |
f7f9143b JB |
9685 | b->addr_string = addr_string; |
9686 | b->language = language_ada; | |
9687 | b->cond_string = cond_string; | |
9688 | b->exp_string = exp_string; | |
9689 | b->thread = -1; | |
9690 | b->ops = ops; | |
f7f9143b JB |
9691 | |
9692 | mention (b); | |
b60e7edf | 9693 | update_global_location_list (1); |
f7f9143b JB |
9694 | } |
9695 | ||
9696 | /* Implement the "catch exception" command. */ | |
9697 | ||
9698 | static void | |
44feb3ce TT |
9699 | catch_ada_exception_command (char *arg, int from_tty, |
9700 | struct cmd_list_element *command) | |
f7f9143b | 9701 | { |
a6d9a66e | 9702 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9703 | int tempflag; |
f7f9143b | 9704 | struct symtab_and_line sal; |
f7f9143b JB |
9705 | char *addr_string = NULL; |
9706 | char *exp_string = NULL; | |
9707 | char *cond_string = NULL; | |
9708 | struct expression *cond = NULL; | |
9709 | struct breakpoint_ops *ops = NULL; | |
9710 | ||
44feb3ce TT |
9711 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9712 | ||
9713 | if (!arg) | |
9714 | arg = ""; | |
f7f9143b JB |
9715 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9716 | &cond_string, &cond, &ops); | |
a6d9a66e | 9717 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9718 | cond_string, cond, ops, tempflag, |
9719 | from_tty); | |
9720 | } | |
9721 | ||
a96d9b2e SDJ |
9722 | /* Cleanup function for a syscall filter list. */ |
9723 | static void | |
9724 | clean_up_filters (void *arg) | |
9725 | { | |
9726 | VEC(int) *iter = *(VEC(int) **) arg; | |
9727 | VEC_free (int, iter); | |
9728 | } | |
9729 | ||
9730 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9731 | filter list, or NULL if no filtering is required. */ | |
9732 | static VEC(int) * | |
9733 | catch_syscall_split_args (char *arg) | |
9734 | { | |
9735 | VEC(int) *result = NULL; | |
9736 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9737 | ||
9738 | while (*arg != '\0') | |
9739 | { | |
9740 | int i, syscall_number; | |
9741 | char *endptr; | |
9742 | char cur_name[128]; | |
9743 | struct syscall s; | |
9744 | ||
9745 | /* Skip whitespace. */ | |
9746 | while (isspace (*arg)) | |
9747 | arg++; | |
9748 | ||
9749 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9750 | cur_name[i] = arg[i]; | |
9751 | cur_name[i] = '\0'; | |
9752 | arg += i; | |
9753 | ||
9754 | /* Check if the user provided a syscall name or a number. */ | |
9755 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9756 | if (*endptr == '\0') | |
bccd0dd2 | 9757 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9758 | else |
9759 | { | |
9760 | /* We have a name. Let's check if it's valid and convert it | |
9761 | to a number. */ | |
9762 | get_syscall_by_name (cur_name, &s); | |
9763 | ||
9764 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9765 | /* Here we have to issue an error instead of a warning, |
9766 | because GDB cannot do anything useful if there's no | |
9767 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9768 | error (_("Unknown syscall name '%s'."), cur_name); |
9769 | } | |
9770 | ||
9771 | /* Ok, it's valid. */ | |
9772 | VEC_safe_push (int, result, s.number); | |
9773 | } | |
9774 | ||
9775 | discard_cleanups (cleanup); | |
9776 | return result; | |
9777 | } | |
9778 | ||
9779 | /* Implement the "catch syscall" command. */ | |
9780 | ||
9781 | static void | |
cc59ec59 MS |
9782 | catch_syscall_command_1 (char *arg, int from_tty, |
9783 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9784 | { |
9785 | int tempflag; | |
9786 | VEC(int) *filter; | |
9787 | struct syscall s; | |
9788 | struct gdbarch *gdbarch = get_current_arch (); | |
9789 | ||
9790 | /* Checking if the feature if supported. */ | |
9791 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9792 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9793 | this architecture yet.")); |
a96d9b2e SDJ |
9794 | |
9795 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9796 | ||
e9cafbcc | 9797 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9798 | |
9799 | /* We need to do this first "dummy" translation in order | |
9800 | to get the syscall XML file loaded or, most important, | |
9801 | to display a warning to the user if there's no XML file | |
9802 | for his/her architecture. */ | |
9803 | get_syscall_by_number (0, &s); | |
9804 | ||
9805 | /* The allowed syntax is: | |
9806 | catch syscall | |
9807 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9808 | ||
9809 | Let's check if there's a syscall name. */ | |
9810 | ||
9811 | if (arg != NULL) | |
9812 | filter = catch_syscall_split_args (arg); | |
9813 | else | |
9814 | filter = NULL; | |
9815 | ||
9816 | create_syscall_event_catchpoint (tempflag, filter, | |
9817 | &catch_syscall_breakpoint_ops); | |
9818 | } | |
9819 | ||
f7f9143b JB |
9820 | /* Implement the "catch assert" command. */ |
9821 | ||
9822 | static void | |
3e43a32a MS |
9823 | catch_assert_command (char *arg, int from_tty, |
9824 | struct cmd_list_element *command) | |
f7f9143b | 9825 | { |
a6d9a66e | 9826 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9827 | int tempflag; |
f7f9143b JB |
9828 | struct symtab_and_line sal; |
9829 | char *addr_string = NULL; | |
9830 | struct breakpoint_ops *ops = NULL; | |
9831 | ||
44feb3ce TT |
9832 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9833 | ||
9834 | if (!arg) | |
9835 | arg = ""; | |
f7f9143b | 9836 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9837 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9838 | ops, tempflag, from_tty); | |
f7f9143b JB |
9839 | } |
9840 | ||
c906108c | 9841 | static void |
fba45db2 | 9842 | catch_command (char *arg, int from_tty) |
c906108c | 9843 | { |
44feb3ce | 9844 | error (_("Catch requires an event name.")); |
c906108c SS |
9845 | } |
9846 | \f | |
9847 | ||
9848 | static void | |
fba45db2 | 9849 | tcatch_command (char *arg, int from_tty) |
c906108c | 9850 | { |
44feb3ce | 9851 | error (_("Catch requires an event name.")); |
c906108c SS |
9852 | } |
9853 | ||
80f8a6eb | 9854 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9855 | |
9856 | static void | |
fba45db2 | 9857 | clear_command (char *arg, int from_tty) |
c906108c | 9858 | { |
d6e956e5 VP |
9859 | struct breakpoint *b; |
9860 | VEC(breakpoint_p) *found = 0; | |
9861 | int ix; | |
c906108c SS |
9862 | int default_match; |
9863 | struct symtabs_and_lines sals; | |
9864 | struct symtab_and_line sal; | |
c906108c SS |
9865 | int i; |
9866 | ||
9867 | if (arg) | |
9868 | { | |
9869 | sals = decode_line_spec (arg, 1); | |
9870 | default_match = 0; | |
9871 | } | |
9872 | else | |
9873 | { | |
c5aa993b | 9874 | sals.sals = (struct symtab_and_line *) |
c906108c | 9875 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9876 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9877 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9878 | sal.line = default_breakpoint_line; |
9879 | sal.symtab = default_breakpoint_symtab; | |
9880 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9881 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9882 | if (sal.symtab == 0) |
8a3fe4f8 | 9883 | error (_("No source file specified.")); |
c906108c SS |
9884 | |
9885 | sals.sals[0] = sal; | |
9886 | sals.nelts = 1; | |
9887 | ||
9888 | default_match = 1; | |
9889 | } | |
9890 | ||
4a64f543 MS |
9891 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9892 | seems, because all existing breakpoints typically have both | |
9893 | file/line and pc set. So, if clear is given file/line, we can | |
9894 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9895 | |
9896 | We only support clearing given the address explicitly | |
9897 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9898 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9899 | due to optimization, all in one block. |
4a64f543 MS |
9900 | |
9901 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9902 | PC corresponding to the same file:line, the breakpoint won't |
9903 | be cleared. We probably can still clear the breakpoint, but | |
9904 | since the other PC value is never presented to user, user | |
9905 | can only find it by guessing, and it does not seem important | |
9906 | to support that. */ | |
9907 | ||
4a64f543 MS |
9908 | /* For each line spec given, delete bps which correspond to it. Do |
9909 | it in two passes, solely to preserve the current behavior that | |
9910 | from_tty is forced true if we delete more than one | |
9911 | breakpoint. */ | |
c906108c | 9912 | |
80f8a6eb | 9913 | found = NULL; |
c906108c SS |
9914 | for (i = 0; i < sals.nelts; i++) |
9915 | { | |
9916 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9917 | If line given (pc == 0), clear all bpts on specified line. |
9918 | If defaulting, clear all bpts on default line | |
c906108c | 9919 | or at default pc. |
c5aa993b JM |
9920 | |
9921 | defaulting sal.pc != 0 tests to do | |
9922 | ||
9923 | 0 1 pc | |
9924 | 1 1 pc _and_ line | |
9925 | 0 0 line | |
9926 | 1 0 <can't happen> */ | |
c906108c SS |
9927 | |
9928 | sal = sals.sals[i]; | |
c906108c | 9929 | |
4a64f543 | 9930 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9931 | ALL_BREAKPOINTS (b) |
c5aa993b | 9932 | { |
0d381245 | 9933 | int match = 0; |
4a64f543 | 9934 | /* Are we going to delete b? */ |
cc60f2e3 | 9935 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9936 | { |
9937 | struct bp_location *loc = b->loc; | |
9938 | for (; loc; loc = loc->next) | |
9939 | { | |
6c95b8df PA |
9940 | int pc_match = sal.pc |
9941 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9942 | && (loc->address == sal.pc) |
9943 | && (!section_is_overlay (loc->section) | |
9944 | || loc->section == sal.section); | |
9945 | int line_match = ((default_match || (0 == sal.pc)) | |
9946 | && b->source_file != NULL | |
9947 | && sal.symtab != NULL | |
6c95b8df | 9948 | && sal.pspace == loc->pspace |
0ba1096a KT |
9949 | && filename_cmp (b->source_file, |
9950 | sal.symtab->filename) == 0 | |
0d381245 VP |
9951 | && b->line_number == sal.line); |
9952 | if (pc_match || line_match) | |
9953 | { | |
9954 | match = 1; | |
9955 | break; | |
9956 | } | |
9957 | } | |
9958 | } | |
9959 | ||
9960 | if (match) | |
d6e956e5 | 9961 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9962 | } |
80f8a6eb MS |
9963 | } |
9964 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9965 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9966 | { |
9967 | if (arg) | |
8a3fe4f8 | 9968 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9969 | else |
8a3fe4f8 | 9970 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9971 | } |
c906108c | 9972 | |
d6e956e5 | 9973 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9974 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9975 | if (from_tty) |
a3f17187 | 9976 | { |
d6e956e5 | 9977 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9978 | printf_unfiltered (_("Deleted breakpoint ")); |
9979 | else | |
9980 | printf_unfiltered (_("Deleted breakpoints ")); | |
9981 | } | |
80f8a6eb | 9982 | breakpoints_changed (); |
d6e956e5 VP |
9983 | |
9984 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9985 | { |
c5aa993b | 9986 | if (from_tty) |
d6e956e5 VP |
9987 | printf_unfiltered ("%d ", b->number); |
9988 | delete_breakpoint (b); | |
c906108c | 9989 | } |
80f8a6eb MS |
9990 | if (from_tty) |
9991 | putchar_unfiltered ('\n'); | |
c906108c SS |
9992 | } |
9993 | \f | |
9994 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9995 | all breakpoints that are marked for deletion, whether hit or not. | |
9996 | This is called after any breakpoint is hit, or after errors. */ | |
9997 | ||
9998 | void | |
fba45db2 | 9999 | breakpoint_auto_delete (bpstat bs) |
c906108c | 10000 | { |
35df4500 | 10001 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10002 | |
10003 | for (; bs; bs = bs->next) | |
f431efe5 PA |
10004 | if (bs->breakpoint_at |
10005 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10006 | && bs->stop) |
f431efe5 | 10007 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10008 | |
35df4500 | 10009 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10010 | { |
b5de0fa7 | 10011 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
10012 | delete_breakpoint (b); |
10013 | } | |
c906108c SS |
10014 | } |
10015 | ||
4a64f543 MS |
10016 | /* A comparison function for bp_location AP and BP being interfaced to |
10017 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
10018 | does breakpoint_address_is_meaningful say for its OWNER), | |
10019 | secondarily by ordering first bp_permanent OWNERed elements and | |
10020 | terciarily just ensuring the array is sorted stable way despite | |
10021 | qsort being an instable algorithm. */ | |
876fa593 JK |
10022 | |
10023 | static int | |
494cfb0f | 10024 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10025 | { |
494cfb0f JK |
10026 | struct bp_location *a = *(void **) ap; |
10027 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10028 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10029 | int a_perm = a->owner->enable_state == bp_permanent; |
10030 | int b_perm = b->owner->enable_state == bp_permanent; | |
10031 | ||
10032 | if (a->address != b->address) | |
10033 | return (a->address > b->address) - (a->address < b->address); | |
10034 | ||
10035 | /* Sort permanent breakpoints first. */ | |
10036 | if (a_perm != b_perm) | |
10037 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10038 | ||
4a64f543 MS |
10039 | /* Make the user-visible order stable across GDB runs. Locations of |
10040 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10041 | |
10042 | if (a->owner->number != b->owner->number) | |
10043 | return (a->owner->number > b->owner->number) | |
10044 | - (a->owner->number < b->owner->number); | |
10045 | ||
10046 | return (a > b) - (a < b); | |
10047 | } | |
10048 | ||
876fa593 | 10049 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10050 | bp_location_shadow_len_after_address_max according to the current |
10051 | content of the bp_location array. */ | |
f7545552 TT |
10052 | |
10053 | static void | |
876fa593 | 10054 | bp_location_target_extensions_update (void) |
f7545552 | 10055 | { |
876fa593 JK |
10056 | struct bp_location *bl, **blp_tmp; |
10057 | ||
10058 | bp_location_placed_address_before_address_max = 0; | |
10059 | bp_location_shadow_len_after_address_max = 0; | |
10060 | ||
10061 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10062 | { | |
10063 | CORE_ADDR start, end, addr; | |
10064 | ||
10065 | if (!bp_location_has_shadow (bl)) | |
10066 | continue; | |
10067 | ||
10068 | start = bl->target_info.placed_address; | |
10069 | end = start + bl->target_info.shadow_len; | |
10070 | ||
10071 | gdb_assert (bl->address >= start); | |
10072 | addr = bl->address - start; | |
10073 | if (addr > bp_location_placed_address_before_address_max) | |
10074 | bp_location_placed_address_before_address_max = addr; | |
10075 | ||
10076 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10077 | ||
10078 | gdb_assert (bl->address < end); | |
10079 | addr = end - bl->address; | |
10080 | if (addr > bp_location_shadow_len_after_address_max) | |
10081 | bp_location_shadow_len_after_address_max = addr; | |
10082 | } | |
f7545552 TT |
10083 | } |
10084 | ||
4cd9bd08 | 10085 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10086 | into the inferior, only remove already-inserted locations that no |
10087 | longer should be inserted. Functions that delete a breakpoint or | |
10088 | breakpoints should pass false, so that deleting a breakpoint | |
10089 | doesn't have the side effect of inserting the locations of other | |
10090 | breakpoints that are marked not-inserted, but should_be_inserted | |
10091 | returns true on them. | |
10092 | ||
10093 | This behaviour is useful is situations close to tear-down -- e.g., | |
10094 | after an exec, while the target still has execution, but breakpoint | |
10095 | shadows of the previous executable image should *NOT* be restored | |
10096 | to the new image; or before detaching, where the target still has | |
10097 | execution and wants to delete breakpoints from GDB's lists, and all | |
10098 | breakpoints had already been removed from the inferior. */ | |
10099 | ||
0d381245 | 10100 | static void |
b60e7edf | 10101 | update_global_location_list (int should_insert) |
0d381245 | 10102 | { |
74960c60 | 10103 | struct breakpoint *b; |
876fa593 | 10104 | struct bp_location **locp, *loc; |
f7545552 TT |
10105 | struct cleanup *cleanups; |
10106 | ||
2d134ed3 PA |
10107 | /* Used in the duplicates detection below. When iterating over all |
10108 | bp_locations, points to the first bp_location of a given address. | |
10109 | Breakpoints and watchpoints of different types are never | |
10110 | duplicates of each other. Keep one pointer for each type of | |
10111 | breakpoint/watchpoint, so we only need to loop over all locations | |
10112 | once. */ | |
10113 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10114 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10115 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10116 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10117 | |
4a64f543 MS |
10118 | /* Saved former bp_location array which we compare against the newly |
10119 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10120 | struct bp_location **old_location, **old_locp; |
10121 | unsigned old_location_count; | |
10122 | ||
10123 | old_location = bp_location; | |
10124 | old_location_count = bp_location_count; | |
10125 | bp_location = NULL; | |
10126 | bp_location_count = 0; | |
10127 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10128 | |
74960c60 | 10129 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10130 | for (loc = b->loc; loc; loc = loc->next) |
10131 | bp_location_count++; | |
10132 | ||
10133 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10134 | locp = bp_location; | |
10135 | ALL_BREAKPOINTS (b) | |
10136 | for (loc = b->loc; loc; loc = loc->next) | |
10137 | *locp++ = loc; | |
10138 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10139 | bp_location_compare); |
876fa593 JK |
10140 | |
10141 | bp_location_target_extensions_update (); | |
74960c60 | 10142 | |
4a64f543 MS |
10143 | /* Identify bp_location instances that are no longer present in the |
10144 | new list, and therefore should be freed. Note that it's not | |
10145 | necessary that those locations should be removed from inferior -- | |
10146 | if there's another location at the same address (previously | |
10147 | marked as duplicate), we don't need to remove/insert the | |
10148 | location. | |
876fa593 | 10149 | |
4a64f543 MS |
10150 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10151 | and former bp_location array state respectively. */ | |
876fa593 JK |
10152 | |
10153 | locp = bp_location; | |
10154 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10155 | old_locp++) | |
74960c60 | 10156 | { |
876fa593 | 10157 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10158 | struct bp_location **loc2p; |
876fa593 | 10159 | |
4a64f543 MS |
10160 | /* Tells if 'old_loc' is found amoung the new locations. If |
10161 | not, we have to free it. */ | |
c7d46a38 | 10162 | int found_object = 0; |
20874c92 VP |
10163 | /* Tells if the location should remain inserted in the target. */ |
10164 | int keep_in_target = 0; | |
10165 | int removed = 0; | |
876fa593 | 10166 | |
4a64f543 MS |
10167 | /* Skip LOCP entries which will definitely never be needed. |
10168 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10169 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10170 | && (*locp)->address < old_loc->address) |
876fa593 | 10171 | locp++; |
c7d46a38 PA |
10172 | |
10173 | for (loc2p = locp; | |
10174 | (loc2p < bp_location + bp_location_count | |
10175 | && (*loc2p)->address == old_loc->address); | |
10176 | loc2p++) | |
10177 | { | |
10178 | if (*loc2p == old_loc) | |
10179 | { | |
10180 | found_object = 1; | |
10181 | break; | |
10182 | } | |
10183 | } | |
74960c60 | 10184 | |
4a64f543 MS |
10185 | /* If this location is no longer present, and inserted, look if |
10186 | there's maybe a new location at the same address. If so, | |
10187 | mark that one inserted, and don't remove this one. This is | |
10188 | needed so that we don't have a time window where a breakpoint | |
10189 | at certain location is not inserted. */ | |
74960c60 | 10190 | |
876fa593 | 10191 | if (old_loc->inserted) |
0d381245 | 10192 | { |
4a64f543 MS |
10193 | /* If the location is inserted now, we might have to remove |
10194 | it. */ | |
74960c60 | 10195 | |
876fa593 | 10196 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10197 | { |
4a64f543 MS |
10198 | /* The location is still present in the location list, |
10199 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10200 | keep_in_target = 1; |
74960c60 VP |
10201 | } |
10202 | else | |
10203 | { | |
4a64f543 MS |
10204 | /* The location is either no longer present, or got |
10205 | disabled. See if there's another location at the | |
10206 | same address, in which case we don't need to remove | |
10207 | this one from the target. */ | |
876fa593 | 10208 | |
2bdf28a0 | 10209 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10210 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10211 | { | |
876fa593 | 10212 | for (loc2p = locp; |
c7d46a38 PA |
10213 | (loc2p < bp_location + bp_location_count |
10214 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10215 | loc2p++) |
10216 | { | |
10217 | struct bp_location *loc2 = *loc2p; | |
10218 | ||
2d134ed3 | 10219 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
10220 | { |
10221 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
10222 | Duplicates check below will fix up this |
10223 | later. */ | |
c7d46a38 | 10224 | loc2->duplicate = 0; |
85d721b8 PA |
10225 | |
10226 | /* Read watchpoint locations are switched to | |
10227 | access watchpoints, if the former are not | |
10228 | supported, but the latter are. */ | |
10229 | if (is_hardware_watchpoint (old_loc->owner)) | |
10230 | { | |
10231 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10232 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10233 | } | |
10234 | ||
c7d46a38 PA |
10235 | if (loc2 != old_loc && should_be_inserted (loc2)) |
10236 | { | |
10237 | loc2->inserted = 1; | |
10238 | loc2->target_info = old_loc->target_info; | |
10239 | keep_in_target = 1; | |
10240 | break; | |
10241 | } | |
876fa593 JK |
10242 | } |
10243 | } | |
10244 | } | |
74960c60 VP |
10245 | } |
10246 | ||
20874c92 VP |
10247 | if (!keep_in_target) |
10248 | { | |
876fa593 | 10249 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10250 | { |
4a64f543 MS |
10251 | /* This is just about all we can do. We could keep |
10252 | this location on the global list, and try to | |
10253 | remove it next time, but there's no particular | |
10254 | reason why we will succeed next time. | |
20874c92 | 10255 | |
4a64f543 MS |
10256 | Note that at this point, old_loc->owner is still |
10257 | valid, as delete_breakpoint frees the breakpoint | |
10258 | only after calling us. */ | |
3e43a32a MS |
10259 | printf_filtered (_("warning: Error removing " |
10260 | "breakpoint %d\n"), | |
876fa593 | 10261 | old_loc->owner->number); |
20874c92 VP |
10262 | } |
10263 | removed = 1; | |
10264 | } | |
0d381245 | 10265 | } |
74960c60 VP |
10266 | |
10267 | if (!found_object) | |
1c5cfe86 | 10268 | { |
db82e815 PA |
10269 | if (removed && non_stop |
10270 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10271 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10272 | { |
db82e815 PA |
10273 | /* This location was removed from the target. In |
10274 | non-stop mode, a race condition is possible where | |
10275 | we've removed a breakpoint, but stop events for that | |
10276 | breakpoint are already queued and will arrive later. | |
10277 | We apply an heuristic to be able to distinguish such | |
10278 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10279 | breakpoint location for a bit, and will retire it | |
10280 | after we see some number of events. The theory here | |
10281 | is that reporting of events should, "on the average", | |
10282 | be fair, so after a while we'll see events from all | |
10283 | threads that have anything of interest, and no longer | |
10284 | need to keep this breakpoint location around. We | |
10285 | don't hold locations forever so to reduce chances of | |
10286 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10287 | SIGTRAP. | |
10288 | ||
10289 | The heuristic failing can be disastrous on | |
10290 | decr_pc_after_break targets. | |
10291 | ||
10292 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10293 | if we fail to recognize a late breakpoint SIGTRAP, | |
10294 | because events_till_retirement has reached 0 too | |
10295 | soon, we'll fail to do the PC adjustment, and report | |
10296 | a random SIGTRAP to the user. When the user resumes | |
10297 | the inferior, it will most likely immediately crash | |
2dec564e | 10298 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10299 | corrupted, because of being resumed e.g., in the |
10300 | middle of a multi-byte instruction, or skipped a | |
10301 | one-byte instruction. This was actually seen happen | |
10302 | on native x86-linux, and should be less rare on | |
10303 | targets that do not support new thread events, like | |
10304 | remote, due to the heuristic depending on | |
10305 | thread_count. | |
10306 | ||
10307 | Mistaking a random SIGTRAP for a breakpoint trap | |
10308 | causes similar symptoms (PC adjustment applied when | |
10309 | it shouldn't), but then again, playing with SIGTRAPs | |
10310 | behind the debugger's back is asking for trouble. | |
10311 | ||
10312 | Since hardware watchpoint traps are always | |
10313 | distinguishable from other traps, so we don't need to | |
10314 | apply keep hardware watchpoint moribund locations | |
10315 | around. We simply always ignore hardware watchpoint | |
10316 | traps we can no longer explain. */ | |
10317 | ||
876fa593 JK |
10318 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10319 | old_loc->owner = NULL; | |
20874c92 | 10320 | |
876fa593 | 10321 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10322 | } |
10323 | else | |
f431efe5 PA |
10324 | { |
10325 | old_loc->owner = NULL; | |
10326 | decref_bp_location (&old_loc); | |
10327 | } | |
20874c92 | 10328 | } |
74960c60 | 10329 | } |
1c5cfe86 | 10330 | |
2d134ed3 PA |
10331 | /* Rescan breakpoints at the same address and section, marking the |
10332 | first one as "first" and any others as "duplicates". This is so | |
10333 | that the bpt instruction is only inserted once. If we have a | |
10334 | permanent breakpoint at the same place as BPT, make that one the | |
10335 | official one, and the rest as duplicates. Permanent breakpoints | |
10336 | are sorted first for the same address. | |
10337 | ||
10338 | Do the same for hardware watchpoints, but also considering the | |
10339 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 10340 | |
2d134ed3 PA |
10341 | bp_loc_first = NULL; |
10342 | wp_loc_first = NULL; | |
10343 | awp_loc_first = NULL; | |
10344 | rwp_loc_first = NULL; | |
876fa593 | 10345 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 10346 | { |
4a64f543 MS |
10347 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
10348 | non-NULL. */ | |
876fa593 | 10349 | struct breakpoint *b = loc->owner; |
2d134ed3 | 10350 | struct bp_location **loc_first_p; |
876fa593 JK |
10351 | |
10352 | if (b->enable_state == bp_disabled | |
10353 | || b->enable_state == bp_call_disabled | |
10354 | || b->enable_state == bp_startup_disabled | |
10355 | || !loc->enabled | |
10356 | || loc->shlib_disabled | |
15c3d785 | 10357 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 10358 | || is_tracepoint (b)) |
876fa593 JK |
10359 | continue; |
10360 | ||
10361 | /* Permanent breakpoint should always be inserted. */ | |
10362 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10363 | internal_error (__FILE__, __LINE__, | |
10364 | _("allegedly permanent breakpoint is not " | |
10365 | "actually inserted")); | |
10366 | ||
2d134ed3 PA |
10367 | if (b->type == bp_hardware_watchpoint) |
10368 | loc_first_p = &wp_loc_first; | |
10369 | else if (b->type == bp_read_watchpoint) | |
10370 | loc_first_p = &rwp_loc_first; | |
10371 | else if (b->type == bp_access_watchpoint) | |
10372 | loc_first_p = &awp_loc_first; | |
10373 | else | |
10374 | loc_first_p = &bp_loc_first; | |
10375 | ||
10376 | if (*loc_first_p == NULL | |
10377 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10378 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 10379 | { |
2d134ed3 | 10380 | *loc_first_p = loc; |
876fa593 JK |
10381 | loc->duplicate = 0; |
10382 | continue; | |
10383 | } | |
10384 | ||
10385 | loc->duplicate = 1; | |
10386 | ||
2d134ed3 PA |
10387 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
10388 | && b->enable_state != bp_permanent) | |
876fa593 JK |
10389 | internal_error (__FILE__, __LINE__, |
10390 | _("another breakpoint was inserted on top of " | |
10391 | "a permanent breakpoint")); | |
0d381245 | 10392 | } |
74960c60 | 10393 | |
50c71eaf | 10394 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 10395 | && (have_live_inferiors () |
2567c7d9 | 10396 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 10397 | insert_breakpoint_locations (); |
f7545552 TT |
10398 | |
10399 | do_cleanups (cleanups); | |
74960c60 VP |
10400 | } |
10401 | ||
20874c92 VP |
10402 | void |
10403 | breakpoint_retire_moribund (void) | |
10404 | { | |
10405 | struct bp_location *loc; | |
10406 | int ix; | |
10407 | ||
10408 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10409 | if (--(loc->events_till_retirement) == 0) | |
10410 | { | |
f431efe5 | 10411 | decref_bp_location (&loc); |
20874c92 VP |
10412 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
10413 | --ix; | |
10414 | } | |
10415 | } | |
10416 | ||
74960c60 | 10417 | static void |
b60e7edf | 10418 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
10419 | { |
10420 | struct gdb_exception e; | |
cc59ec59 | 10421 | |
74960c60 | 10422 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 10423 | update_global_location_list (inserting); |
0d381245 VP |
10424 | } |
10425 | ||
f431efe5 PA |
10426 | /* Clear BKP from a BPS. */ |
10427 | ||
a474d7c2 | 10428 | static void |
f431efe5 | 10429 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
10430 | { |
10431 | bpstat bs; | |
cc59ec59 | 10432 | |
a474d7c2 | 10433 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 10434 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
10435 | { |
10436 | bs->breakpoint_at = NULL; | |
10437 | bs->old_val = NULL; | |
10438 | /* bs->commands will be freed later. */ | |
10439 | } | |
10440 | } | |
10441 | ||
10442 | /* Callback for iterate_over_threads. */ | |
10443 | static int | |
f431efe5 | 10444 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 10445 | { |
f431efe5 | 10446 | struct breakpoint *bpt = data; |
cc59ec59 | 10447 | |
16c381f0 | 10448 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
10449 | return 0; |
10450 | } | |
10451 | ||
53a5351d | 10452 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 10453 | structures. */ |
c906108c SS |
10454 | |
10455 | void | |
fba45db2 | 10456 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 10457 | { |
52f0bd74 | 10458 | struct breakpoint *b; |
c906108c | 10459 | |
8a3fe4f8 | 10460 | gdb_assert (bpt != NULL); |
c906108c | 10461 | |
4a64f543 MS |
10462 | /* Has this bp already been deleted? This can happen because |
10463 | multiple lists can hold pointers to bp's. bpstat lists are | |
10464 | especial culprits. | |
10465 | ||
10466 | One example of this happening is a watchpoint's scope bp. When | |
10467 | the scope bp triggers, we notice that the watchpoint is out of | |
10468 | scope, and delete it. We also delete its scope bp. But the | |
10469 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
10470 | That bpstat is then checked for auto-deleting bp's, which are | |
10471 | deleted. | |
10472 | ||
10473 | A real solution to this problem might involve reference counts in | |
10474 | bp's, and/or giving them pointers back to their referencing | |
10475 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
10476 | storage when no more references were extent. A cheaper bandaid | |
10477 | was chosen. */ | |
c906108c SS |
10478 | if (bpt->type == bp_none) |
10479 | return; | |
10480 | ||
4a64f543 MS |
10481 | /* At least avoid this stale reference until the reference counting |
10482 | of breakpoints gets resolved. */ | |
d0fb5eae | 10483 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 10484 | { |
d0fb5eae JK |
10485 | struct breakpoint *related; |
10486 | ||
10487 | if (bpt->type == bp_watchpoint_scope) | |
10488 | watchpoint_del_at_next_stop (bpt->related_breakpoint); | |
10489 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) | |
10490 | watchpoint_del_at_next_stop (bpt); | |
10491 | ||
10492 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
10493 | for (related = bpt; related->related_breakpoint != bpt; | |
10494 | related = related->related_breakpoint); | |
10495 | related->related_breakpoint = bpt->related_breakpoint; | |
10496 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
10497 | } |
10498 | ||
383f836e | 10499 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 10500 | |
c906108c SS |
10501 | if (breakpoint_chain == bpt) |
10502 | breakpoint_chain = bpt->next; | |
10503 | ||
c906108c SS |
10504 | ALL_BREAKPOINTS (b) |
10505 | if (b->next == bpt) | |
c5aa993b JM |
10506 | { |
10507 | b->next = bpt->next; | |
10508 | break; | |
10509 | } | |
c906108c | 10510 | |
9add0f1b | 10511 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
10512 | xfree (bpt->cond_string); |
10513 | xfree (bpt->cond_exp); | |
10514 | xfree (bpt->addr_string); | |
f1310107 | 10515 | xfree (bpt->addr_string_range_end); |
60e1c644 PA |
10516 | xfree (bpt->exp); |
10517 | xfree (bpt->exp_string); | |
d63d0675 | 10518 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
10519 | value_free (bpt->val); |
10520 | xfree (bpt->source_file); | |
10521 | xfree (bpt->exec_pathname); | |
a96d9b2e | 10522 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 10523 | |
f431efe5 PA |
10524 | |
10525 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
10526 | been freed. */ | |
10527 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
10528 | in all threeds for now. Note that we cannot just remove bpstats | |
10529 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
10530 | commands are associated with the bpstat; if we remove it here, | |
10531 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
10532 | event-top.c won't do anything, and temporary breakpoints with | |
10533 | commands won't work. */ | |
10534 | ||
10535 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
10536 | ||
4a64f543 MS |
10537 | /* Now that breakpoint is removed from breakpoint list, update the |
10538 | global location list. This will remove locations that used to | |
10539 | belong to this breakpoint. Do this before freeing the breakpoint | |
10540 | itself, since remove_breakpoint looks at location's owner. It | |
10541 | might be better design to have location completely | |
10542 | self-contained, but it's not the case now. */ | |
b60e7edf | 10543 | update_global_location_list (0); |
74960c60 VP |
10544 | |
10545 | ||
4a64f543 MS |
10546 | /* On the chance that someone will soon try again to delete this |
10547 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
10548 | bpt->type = bp_none; |
10549 | ||
b8c9b27d | 10550 | xfree (bpt); |
c906108c SS |
10551 | } |
10552 | ||
4d6140d9 AC |
10553 | static void |
10554 | do_delete_breakpoint_cleanup (void *b) | |
10555 | { | |
10556 | delete_breakpoint (b); | |
10557 | } | |
10558 | ||
10559 | struct cleanup * | |
10560 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
10561 | { | |
10562 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
10563 | } | |
10564 | ||
95a42b64 TT |
10565 | /* A callback for map_breakpoint_numbers that calls |
10566 | delete_breakpoint. */ | |
10567 | ||
10568 | static void | |
10569 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
10570 | { | |
10571 | delete_breakpoint (b); | |
10572 | } | |
10573 | ||
c906108c | 10574 | void |
fba45db2 | 10575 | delete_command (char *arg, int from_tty) |
c906108c | 10576 | { |
35df4500 | 10577 | struct breakpoint *b, *b_tmp; |
c906108c | 10578 | |
ea9365bb TT |
10579 | dont_repeat (); |
10580 | ||
c906108c SS |
10581 | if (arg == 0) |
10582 | { | |
10583 | int breaks_to_delete = 0; | |
10584 | ||
10585 | /* Delete all breakpoints if no argument. | |
4a64f543 MS |
10586 | Do not delete internal or call-dummy breakpoints, these have |
10587 | to be deleted with an explicit breakpoint number argument. */ | |
c5aa993b JM |
10588 | ALL_BREAKPOINTS (b) |
10589 | { | |
059fb39f | 10590 | if (b->type != bp_call_dummy |
aa7d318d | 10591 | && b->type != bp_std_terminate |
059fb39f | 10592 | && b->type != bp_shlib_event |
4efc6507 | 10593 | && b->type != bp_jit_event |
059fb39f PM |
10594 | && b->type != bp_thread_event |
10595 | && b->type != bp_overlay_event | |
0fd8e87f | 10596 | && b->type != bp_longjmp_master |
aa7d318d | 10597 | && b->type != bp_std_terminate_master |
186c406b | 10598 | && b->type != bp_exception_master |
059fb39f | 10599 | && b->number >= 0) |
973d738b DJ |
10600 | { |
10601 | breaks_to_delete = 1; | |
10602 | break; | |
10603 | } | |
c5aa993b | 10604 | } |
c906108c SS |
10605 | |
10606 | /* Ask user only if there are some breakpoints to delete. */ | |
10607 | if (!from_tty | |
e2e0b3e5 | 10608 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 10609 | { |
35df4500 | 10610 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10611 | { |
059fb39f | 10612 | if (b->type != bp_call_dummy |
aa7d318d | 10613 | && b->type != bp_std_terminate |
059fb39f PM |
10614 | && b->type != bp_shlib_event |
10615 | && b->type != bp_thread_event | |
4efc6507 | 10616 | && b->type != bp_jit_event |
059fb39f | 10617 | && b->type != bp_overlay_event |
0fd8e87f | 10618 | && b->type != bp_longjmp_master |
aa7d318d | 10619 | && b->type != bp_std_terminate_master |
186c406b | 10620 | && b->type != bp_exception_master |
059fb39f | 10621 | && b->number >= 0) |
c5aa993b JM |
10622 | delete_breakpoint (b); |
10623 | } | |
c906108c SS |
10624 | } |
10625 | } | |
10626 | else | |
95a42b64 | 10627 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10628 | } |
10629 | ||
0d381245 VP |
10630 | static int |
10631 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10632 | { |
0d381245 VP |
10633 | for (; loc; loc = loc->next) |
10634 | if (!loc->shlib_disabled) | |
10635 | return 0; | |
10636 | return 1; | |
fe3f5fa8 VP |
10637 | } |
10638 | ||
776592bf DE |
10639 | /* Subroutine of update_breakpoint_locations to simplify it. |
10640 | Return non-zero if multiple fns in list LOC have the same name. | |
10641 | Null names are ignored. */ | |
10642 | ||
10643 | static int | |
10644 | ambiguous_names_p (struct bp_location *loc) | |
10645 | { | |
10646 | struct bp_location *l; | |
10647 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10648 | (int (*) (const void *, |
10649 | const void *)) streq, | |
776592bf DE |
10650 | NULL, xcalloc, xfree); |
10651 | ||
10652 | for (l = loc; l != NULL; l = l->next) | |
10653 | { | |
10654 | const char **slot; | |
10655 | const char *name = l->function_name; | |
10656 | ||
10657 | /* Allow for some names to be NULL, ignore them. */ | |
10658 | if (name == NULL) | |
10659 | continue; | |
10660 | ||
10661 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10662 | INSERT); | |
4a64f543 MS |
10663 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10664 | returns NULL. */ | |
776592bf DE |
10665 | if (*slot != NULL) |
10666 | { | |
10667 | htab_delete (htab); | |
10668 | return 1; | |
10669 | } | |
10670 | *slot = name; | |
10671 | } | |
10672 | ||
10673 | htab_delete (htab); | |
10674 | return 0; | |
10675 | } | |
10676 | ||
0fb4aa4b PA |
10677 | /* When symbols change, it probably means the sources changed as well, |
10678 | and it might mean the static tracepoint markers are no longer at | |
10679 | the same address or line numbers they used to be at last we | |
10680 | checked. Losing your static tracepoints whenever you rebuild is | |
10681 | undesirable. This function tries to resync/rematch gdb static | |
10682 | tracepoints with the markers on the target, for static tracepoints | |
10683 | that have not been set by marker id. Static tracepoint that have | |
10684 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10685 | The heuristic is: | |
10686 | ||
10687 | 1) For a tracepoint set at a specific address, look for a marker at | |
10688 | the old PC. If one is found there, assume to be the same marker. | |
10689 | If the name / string id of the marker found is different from the | |
10690 | previous known name, assume that means the user renamed the marker | |
10691 | in the sources, and output a warning. | |
10692 | ||
10693 | 2) For a tracepoint set at a given line number, look for a marker | |
10694 | at the new address of the old line number. If one is found there, | |
10695 | assume to be the same marker. If the name / string id of the | |
10696 | marker found is different from the previous known name, assume that | |
10697 | means the user renamed the marker in the sources, and output a | |
10698 | warning. | |
10699 | ||
10700 | 3) If a marker is no longer found at the same address or line, it | |
10701 | may mean the marker no longer exists. But it may also just mean | |
10702 | the code changed a bit. Maybe the user added a few lines of code | |
10703 | that made the marker move up or down (in line number terms). Ask | |
10704 | the target for info about the marker with the string id as we knew | |
10705 | it. If found, update line number and address in the matching | |
10706 | static tracepoint. This will get confused if there's more than one | |
10707 | marker with the same ID (possible in UST, although unadvised | |
10708 | precisely because it confuses tools). */ | |
10709 | ||
10710 | static struct symtab_and_line | |
10711 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10712 | { | |
10713 | struct static_tracepoint_marker marker; | |
10714 | CORE_ADDR pc; | |
10715 | int i; | |
10716 | ||
10717 | pc = sal.pc; | |
10718 | if (sal.line) | |
10719 | find_line_pc (sal.symtab, sal.line, &pc); | |
10720 | ||
10721 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10722 | { | |
10723 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10724 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10725 | b->number, | |
10726 | b->static_trace_marker_id, marker.str_id); | |
10727 | ||
10728 | xfree (b->static_trace_marker_id); | |
10729 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10730 | release_static_tracepoint_marker (&marker); | |
10731 | ||
10732 | return sal; | |
10733 | } | |
10734 | ||
10735 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10736 | by string ID. */ | |
10737 | if (!sal.explicit_pc | |
10738 | && sal.line != 0 | |
10739 | && sal.symtab != NULL | |
10740 | && b->static_trace_marker_id != NULL) | |
10741 | { | |
10742 | VEC(static_tracepoint_marker_p) *markers; | |
10743 | ||
10744 | markers | |
10745 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10746 | ||
10747 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10748 | { | |
10749 | struct symtab_and_line sal; | |
10750 | struct symbol *sym; | |
10751 | struct static_tracepoint_marker *marker; | |
10752 | ||
10753 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10754 | ||
10755 | xfree (b->static_trace_marker_id); | |
10756 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10757 | ||
10758 | warning (_("marker for static tracepoint %d (%s) not " | |
10759 | "found at previous line number"), | |
10760 | b->number, b->static_trace_marker_id); | |
10761 | ||
10762 | init_sal (&sal); | |
10763 | ||
10764 | sal.pc = marker->address; | |
10765 | ||
10766 | sal = find_pc_line (marker->address, 0); | |
10767 | sym = find_pc_sect_function (marker->address, NULL); | |
10768 | ui_out_text (uiout, "Now in "); | |
10769 | if (sym) | |
10770 | { | |
10771 | ui_out_field_string (uiout, "func", | |
10772 | SYMBOL_PRINT_NAME (sym)); | |
10773 | ui_out_text (uiout, " at "); | |
10774 | } | |
10775 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10776 | ui_out_text (uiout, ":"); | |
10777 | ||
10778 | if (ui_out_is_mi_like_p (uiout)) | |
10779 | { | |
10780 | char *fullname = symtab_to_fullname (sal.symtab); | |
10781 | ||
10782 | if (fullname) | |
10783 | ui_out_field_string (uiout, "fullname", fullname); | |
10784 | } | |
10785 | ||
10786 | ui_out_field_int (uiout, "line", sal.line); | |
10787 | ui_out_text (uiout, "\n"); | |
10788 | ||
10789 | b->line_number = sal.line; | |
10790 | ||
10791 | xfree (b->source_file); | |
10792 | if (sym) | |
10793 | b->source_file = xstrdup (sal.symtab->filename); | |
10794 | else | |
10795 | b->source_file = NULL; | |
10796 | ||
10797 | xfree (b->addr_string); | |
10798 | b->addr_string = xstrprintf ("%s:%d", | |
10799 | sal.symtab->filename, b->line_number); | |
10800 | ||
10801 | /* Might be nice to check if function changed, and warn if | |
10802 | so. */ | |
10803 | ||
10804 | release_static_tracepoint_marker (marker); | |
10805 | } | |
10806 | } | |
10807 | return sal; | |
10808 | } | |
10809 | ||
f1310107 TJB |
10810 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
10811 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
10812 | a ranged breakpoint. */ | |
10813 | ||
0e30163f | 10814 | void |
0d381245 | 10815 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
10816 | struct symtabs_and_lines sals, |
10817 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
10818 | { |
10819 | int i; | |
0d381245 VP |
10820 | struct bp_location *existing_locations = b->loc; |
10821 | ||
f1310107 TJB |
10822 | /* Ranged breakpoints have only one start location and one end location. */ |
10823 | gdb_assert (sals_end.nelts == 0 || (sals.nelts == 1 && sals_end.nelts == 1)); | |
10824 | ||
4a64f543 MS |
10825 | /* If there's no new locations, and all existing locations are |
10826 | pending, don't do anything. This optimizes the common case where | |
10827 | all locations are in the same shared library, that was unloaded. | |
10828 | We'd like to retain the location, so that when the library is | |
10829 | loaded again, we don't loose the enabled/disabled status of the | |
10830 | individual locations. */ | |
0d381245 | 10831 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10832 | return; |
10833 | ||
fe3f5fa8 VP |
10834 | b->loc = NULL; |
10835 | ||
0d381245 | 10836 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10837 | { |
0d381245 | 10838 | struct bp_location *new_loc = |
39d61571 | 10839 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10840 | |
0d381245 VP |
10841 | /* Reparse conditions, they might contain references to the |
10842 | old symtab. */ | |
10843 | if (b->cond_string != NULL) | |
10844 | { | |
f1310107 | 10845 | char *s; |
0d381245 | 10846 | struct gdb_exception e; |
fe3f5fa8 | 10847 | |
0d381245 VP |
10848 | s = b->cond_string; |
10849 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10850 | { | |
10851 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10852 | 0); | |
10853 | } | |
10854 | if (e.reason < 0) | |
10855 | { | |
3e43a32a MS |
10856 | warning (_("failed to reevaluate condition " |
10857 | "for breakpoint %d: %s"), | |
0d381245 VP |
10858 | b->number, e.message); |
10859 | new_loc->enabled = 0; | |
10860 | } | |
10861 | } | |
fe3f5fa8 | 10862 | |
0d381245 VP |
10863 | if (b->source_file != NULL) |
10864 | xfree (b->source_file); | |
10865 | if (sals.sals[i].symtab == NULL) | |
10866 | b->source_file = NULL; | |
10867 | else | |
1b36a34b | 10868 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10869 | |
0d381245 VP |
10870 | if (b->line_number == 0) |
10871 | b->line_number = sals.sals[i].line; | |
f1310107 TJB |
10872 | |
10873 | if (sals_end.nelts) | |
10874 | { | |
10875 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
10876 | ||
10877 | new_loc->length = end - sals.sals[0].pc + 1; | |
10878 | } | |
0d381245 | 10879 | } |
fe3f5fa8 | 10880 | |
514f746b AR |
10881 | /* Update locations of permanent breakpoints. */ |
10882 | if (b->enable_state == bp_permanent) | |
10883 | make_breakpoint_permanent (b); | |
10884 | ||
4a64f543 MS |
10885 | /* If possible, carry over 'disable' status from existing |
10886 | breakpoints. */ | |
0d381245 VP |
10887 | { |
10888 | struct bp_location *e = existing_locations; | |
776592bf DE |
10889 | /* If there are multiple breakpoints with the same function name, |
10890 | e.g. for inline functions, comparing function names won't work. | |
10891 | Instead compare pc addresses; this is just a heuristic as things | |
10892 | may have moved, but in practice it gives the correct answer | |
10893 | often enough until a better solution is found. */ | |
10894 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10895 | ||
0d381245 VP |
10896 | for (; e; e = e->next) |
10897 | { | |
10898 | if (!e->enabled && e->function_name) | |
10899 | { | |
10900 | struct bp_location *l = b->loc; | |
776592bf DE |
10901 | if (have_ambiguous_names) |
10902 | { | |
10903 | for (; l; l = l->next) | |
f1310107 | 10904 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
10905 | { |
10906 | l->enabled = 0; | |
10907 | break; | |
10908 | } | |
10909 | } | |
10910 | else | |
10911 | { | |
10912 | for (; l; l = l->next) | |
10913 | if (l->function_name | |
10914 | && strcmp (e->function_name, l->function_name) == 0) | |
10915 | { | |
10916 | l->enabled = 0; | |
10917 | break; | |
10918 | } | |
10919 | } | |
0d381245 VP |
10920 | } |
10921 | } | |
10922 | } | |
fe3f5fa8 | 10923 | |
b60e7edf | 10924 | update_global_location_list (1); |
fe3f5fa8 VP |
10925 | } |
10926 | ||
ef23e705 TJB |
10927 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
10928 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
10929 | ||
10930 | static struct symtabs_and_lines | |
10931 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
10932 | { | |
10933 | char *s; | |
58438ac1 | 10934 | int marker_spec; |
02d20e4a | 10935 | struct symtabs_and_lines sals = {0}; |
ef23e705 TJB |
10936 | struct gdb_exception e; |
10937 | ||
10938 | s = addr_string; | |
10939 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
10940 | ||
10941 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10942 | { | |
10943 | if (marker_spec) | |
10944 | { | |
10945 | sals = decode_static_tracepoint_spec (&s); | |
10946 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10947 | { | |
10948 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10949 | sals.nelts = 1; | |
10950 | } | |
10951 | else | |
10952 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10953 | } | |
10954 | else | |
58438ac1 | 10955 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, NULL); |
ef23e705 TJB |
10956 | } |
10957 | if (e.reason < 0) | |
10958 | { | |
10959 | int not_found_and_ok = 0; | |
10960 | /* For pending breakpoints, it's expected that parsing will | |
10961 | fail until the right shared library is loaded. User has | |
10962 | already told to create pending breakpoints and don't need | |
10963 | extra messages. If breakpoint is in bp_shlib_disabled | |
10964 | state, then user already saw the message about that | |
10965 | breakpoint being disabled, and don't want to see more | |
10966 | errors. */ | |
58438ac1 | 10967 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
10968 | && (b->condition_not_parsed |
10969 | || (b->loc && b->loc->shlib_disabled) | |
10970 | || b->enable_state == bp_disabled)) | |
10971 | not_found_and_ok = 1; | |
10972 | ||
10973 | if (!not_found_and_ok) | |
10974 | { | |
10975 | /* We surely don't want to warn about the same breakpoint | |
10976 | 10 times. One solution, implemented here, is disable | |
10977 | the breakpoint on error. Another solution would be to | |
10978 | have separate 'warning emitted' flag. Since this | |
10979 | happens only when a binary has changed, I don't know | |
10980 | which approach is better. */ | |
10981 | b->enable_state = bp_disabled; | |
10982 | throw_exception (e); | |
10983 | } | |
10984 | } | |
10985 | ||
58438ac1 | 10986 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 TJB |
10987 | { |
10988 | gdb_assert (sals.nelts == 1); | |
10989 | ||
10990 | resolve_sal_pc (&sals.sals[0]); | |
10991 | if (b->condition_not_parsed && s && s[0]) | |
10992 | { | |
10993 | char *cond_string = 0; | |
10994 | int thread = -1; | |
10995 | int task = 0; | |
10996 | ||
10997 | find_condition_and_thread (s, sals.sals[0].pc, | |
10998 | &cond_string, &thread, &task); | |
10999 | if (cond_string) | |
11000 | b->cond_string = cond_string; | |
11001 | b->thread = thread; | |
11002 | b->task = task; | |
11003 | b->condition_not_parsed = 0; | |
11004 | } | |
11005 | ||
11006 | if (b->type == bp_static_tracepoint && !marker_spec) | |
11007 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
ef23e705 | 11008 | |
58438ac1 TT |
11009 | *found = 1; |
11010 | } | |
11011 | else | |
11012 | *found = 0; | |
ef23e705 TJB |
11013 | |
11014 | return sals; | |
11015 | } | |
11016 | ||
11017 | /* Reevaluate a hardware or software breakpoint and recreate its locations. | |
11018 | This is necessary after symbols are read (e.g., an executable or DSO | |
11019 | was loaded, or the inferior just started). */ | |
11020 | ||
11021 | static void | |
11022 | re_set_breakpoint (struct breakpoint *b) | |
11023 | { | |
11024 | int found; | |
f1310107 | 11025 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 11026 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 11027 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
11028 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
11029 | ||
11030 | input_radix = b->input_radix; | |
11031 | save_current_space_and_thread (); | |
11032 | switch_to_program_space_and_thread (b->pspace); | |
11033 | set_language (b->language); | |
11034 | ||
11035 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
11036 | if (found) | |
11037 | { | |
11038 | make_cleanup (xfree, sals.sals); | |
11039 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
11040 | } | |
11041 | ||
f1310107 TJB |
11042 | if (b->addr_string_range_end) |
11043 | { | |
11044 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
11045 | if (found) | |
11046 | { | |
11047 | make_cleanup (xfree, sals_end.sals); | |
11048 | expanded_end = expand_line_sal_maybe (sals_end.sals[0]); | |
11049 | } | |
11050 | } | |
11051 | ||
11052 | update_breakpoint_locations (b, expanded, expanded_end); | |
ef23e705 TJB |
11053 | do_cleanups (cleanups); |
11054 | } | |
11055 | ||
c906108c SS |
11056 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
11057 | The value we return ends up being the return value from catch_errors. | |
11058 | Unused in this case. */ | |
11059 | ||
11060 | static int | |
4efb68b1 | 11061 | breakpoint_re_set_one (void *bint) |
c906108c | 11062 | { |
4a64f543 | 11063 | /* Get past catch_errs. */ |
53a5351d | 11064 | struct breakpoint *b = (struct breakpoint *) bint; |
c906108c SS |
11065 | |
11066 | switch (b->type) | |
11067 | { | |
11068 | case bp_none: | |
8a3fe4f8 | 11069 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 11070 | b->number); |
c906108c SS |
11071 | return 0; |
11072 | case bp_breakpoint: | |
11073 | case bp_hardware_breakpoint: | |
1042e4c0 | 11074 | case bp_tracepoint: |
7a697b8d | 11075 | case bp_fast_tracepoint: |
0fb4aa4b | 11076 | case bp_static_tracepoint: |
0e30163f | 11077 | case bp_gnu_ifunc_resolver: |
8bea4e01 UW |
11078 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
11079 | if (b->enable_state == bp_startup_disabled) | |
11080 | return 0; | |
11081 | ||
c906108c SS |
11082 | if (b->addr_string == NULL) |
11083 | { | |
4a64f543 | 11084 | /* Anything without a string can't be re-set. */ |
c906108c SS |
11085 | delete_breakpoint (b); |
11086 | return 0; | |
11087 | } | |
c906108c | 11088 | |
ef23e705 | 11089 | re_set_breakpoint (b); |
c906108c SS |
11090 | break; |
11091 | ||
11092 | case bp_watchpoint: | |
11093 | case bp_hardware_watchpoint: | |
11094 | case bp_read_watchpoint: | |
11095 | case bp_access_watchpoint: | |
4a64f543 MS |
11096 | /* Watchpoint can be either on expression using entirely global |
11097 | variables, or it can be on local variables. | |
11098 | ||
11099 | Watchpoints of the first kind are never auto-deleted, and | |
11100 | even persist across program restarts. Since they can use | |
11101 | variables from shared libraries, we need to reparse | |
11102 | expression as libraries are loaded and unloaded. | |
11103 | ||
11104 | Watchpoints on local variables can also change meaning as | |
11105 | result of solib event. For example, if a watchpoint uses | |
11106 | both a local and a global variables in expression, it's a | |
11107 | local watchpoint, but unloading of a shared library will make | |
11108 | the expression invalid. This is not a very common use case, | |
11109 | but we still re-evaluate expression, to avoid surprises to | |
11110 | the user. | |
0b3de036 VP |
11111 | |
11112 | Note that for local watchpoints, we re-evaluate it only if | |
11113 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
11114 | the watchpoint is out of scope and will be deleted soon. In |
11115 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
11116 | |
11117 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 11118 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
11119 | |
11120 | Don't do anything about disabled watchpoints, since they will | |
11121 | be reevaluated again when enabled. */ | |
a5606eee | 11122 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 11123 | break; |
c5aa993b JM |
11124 | /* We needn't really do anything to reset these, since the mask |
11125 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 11126 | loaded. */ |
ce78b96d | 11127 | case bp_catchpoint: |
c906108c | 11128 | break; |
c5aa993b | 11129 | |
c906108c | 11130 | default: |
a3f17187 | 11131 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 11132 | /* fall through */ |
0fd8e87f UW |
11133 | /* Delete overlay event and longjmp master breakpoints; they will be |
11134 | reset later by breakpoint_re_set. */ | |
1900040c | 11135 | case bp_overlay_event: |
0fd8e87f | 11136 | case bp_longjmp_master: |
aa7d318d | 11137 | case bp_std_terminate_master: |
186c406b | 11138 | case bp_exception_master: |
c906108c SS |
11139 | delete_breakpoint (b); |
11140 | break; | |
11141 | ||
c5aa993b JM |
11142 | /* This breakpoint is special, it's set up when the inferior |
11143 | starts and we really don't want to touch it. */ | |
c906108c SS |
11144 | case bp_shlib_event: |
11145 | ||
c4093a6a JM |
11146 | /* Like bp_shlib_event, this breakpoint type is special. |
11147 | Once it is set up, we do not want to touch it. */ | |
11148 | case bp_thread_event: | |
11149 | ||
4a64f543 MS |
11150 | /* Keep temporary breakpoints, which can be encountered when we |
11151 | step over a dlopen call and SOLIB_ADD is resetting the | |
11152 | breakpoints. Otherwise these should have been blown away via | |
11153 | the cleanup chain or by breakpoint_init_inferior when we | |
11154 | rerun the executable. */ | |
c906108c SS |
11155 | case bp_until: |
11156 | case bp_finish: | |
11157 | case bp_watchpoint_scope: | |
11158 | case bp_call_dummy: | |
aa7d318d | 11159 | case bp_std_terminate: |
c906108c | 11160 | case bp_step_resume: |
611c83ae PA |
11161 | case bp_longjmp: |
11162 | case bp_longjmp_resume: | |
186c406b TT |
11163 | case bp_exception: |
11164 | case bp_exception_resume: | |
4efc6507 | 11165 | case bp_jit_event: |
0e30163f | 11166 | case bp_gnu_ifunc_resolver_return: |
c906108c SS |
11167 | break; |
11168 | } | |
11169 | ||
11170 | return 0; | |
11171 | } | |
11172 | ||
69de3c6a | 11173 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 11174 | void |
69de3c6a | 11175 | breakpoint_re_set (void) |
c906108c | 11176 | { |
35df4500 | 11177 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11178 | enum language save_language; |
11179 | int save_input_radix; | |
6c95b8df | 11180 | struct cleanup *old_chain; |
c5aa993b | 11181 | |
c906108c SS |
11182 | save_language = current_language->la_language; |
11183 | save_input_radix = input_radix; | |
6c95b8df PA |
11184 | old_chain = save_current_program_space (); |
11185 | ||
35df4500 | 11186 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11187 | { |
4a64f543 | 11188 | /* Format possible error msg. */ |
fe3f5fa8 | 11189 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
11190 | b->number); |
11191 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 11192 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 11193 | do_cleanups (cleanups); |
c5aa993b | 11194 | } |
c906108c SS |
11195 | set_language (save_language); |
11196 | input_radix = save_input_radix; | |
e62c965a | 11197 | |
0756c555 | 11198 | jit_breakpoint_re_set (); |
4efc6507 | 11199 | |
6c95b8df PA |
11200 | do_cleanups (old_chain); |
11201 | ||
af02033e PP |
11202 | create_overlay_event_breakpoint (); |
11203 | create_longjmp_master_breakpoint (); | |
11204 | create_std_terminate_master_breakpoint (); | |
186c406b | 11205 | create_exception_master_breakpoint (); |
c906108c SS |
11206 | } |
11207 | \f | |
c906108c SS |
11208 | /* Reset the thread number of this breakpoint: |
11209 | ||
11210 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 11211 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 11212 | void |
fba45db2 | 11213 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
11214 | { |
11215 | if (b->thread != -1) | |
11216 | { | |
39f77062 KB |
11217 | if (in_thread_list (inferior_ptid)) |
11218 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
11219 | |
11220 | /* We're being called after following a fork. The new fork is | |
11221 | selected as current, and unless this was a vfork will have a | |
11222 | different program space from the original thread. Reset that | |
11223 | as well. */ | |
11224 | b->loc->pspace = current_program_space; | |
c906108c SS |
11225 | } |
11226 | } | |
11227 | ||
03ac34d5 MS |
11228 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11229 | If from_tty is nonzero, it prints a message to that effect, | |
11230 | which ends with a period (no newline). */ | |
11231 | ||
c906108c | 11232 | void |
fba45db2 | 11233 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 11234 | { |
52f0bd74 | 11235 | struct breakpoint *b; |
c906108c SS |
11236 | |
11237 | if (count < 0) | |
11238 | count = 0; | |
11239 | ||
11240 | ALL_BREAKPOINTS (b) | |
11241 | if (b->number == bptnum) | |
c5aa993b | 11242 | { |
d77f58be SS |
11243 | if (is_tracepoint (b)) |
11244 | { | |
11245 | if (from_tty && count != 0) | |
11246 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
11247 | bptnum); | |
11248 | return; | |
11249 | } | |
11250 | ||
c5aa993b | 11251 | b->ignore_count = count; |
221ea385 KS |
11252 | if (from_tty) |
11253 | { | |
11254 | if (count == 0) | |
3e43a32a MS |
11255 | printf_filtered (_("Will stop next time " |
11256 | "breakpoint %d is reached."), | |
221ea385 KS |
11257 | bptnum); |
11258 | else if (count == 1) | |
a3f17187 | 11259 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
11260 | bptnum); |
11261 | else | |
3e43a32a MS |
11262 | printf_filtered (_("Will ignore next %d " |
11263 | "crossings of breakpoint %d."), | |
221ea385 KS |
11264 | count, bptnum); |
11265 | } | |
c5aa993b | 11266 | breakpoints_changed (); |
383f836e | 11267 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
11268 | return; |
11269 | } | |
c906108c | 11270 | |
8a3fe4f8 | 11271 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
11272 | } |
11273 | ||
c906108c SS |
11274 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
11275 | ||
11276 | static void | |
fba45db2 | 11277 | ignore_command (char *args, int from_tty) |
c906108c SS |
11278 | { |
11279 | char *p = args; | |
52f0bd74 | 11280 | int num; |
c906108c SS |
11281 | |
11282 | if (p == 0) | |
e2e0b3e5 | 11283 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 11284 | |
c906108c | 11285 | num = get_number (&p); |
5c44784c | 11286 | if (num == 0) |
8a3fe4f8 | 11287 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 11288 | if (*p == 0) |
8a3fe4f8 | 11289 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
11290 | |
11291 | set_ignore_count (num, | |
11292 | longest_to_int (value_as_long (parse_and_eval (p))), | |
11293 | from_tty); | |
221ea385 KS |
11294 | if (from_tty) |
11295 | printf_filtered ("\n"); | |
c906108c SS |
11296 | } |
11297 | \f | |
11298 | /* Call FUNCTION on each of the breakpoints | |
11299 | whose numbers are given in ARGS. */ | |
11300 | ||
11301 | static void | |
95a42b64 TT |
11302 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
11303 | void *), | |
11304 | void *data) | |
c906108c | 11305 | { |
52f0bd74 AC |
11306 | int num; |
11307 | struct breakpoint *b, *tmp; | |
11cf8741 | 11308 | int match; |
197f0a60 | 11309 | struct get_number_or_range_state state; |
c906108c | 11310 | |
197f0a60 | 11311 | if (args == 0) |
e2e0b3e5 | 11312 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 11313 | |
197f0a60 TT |
11314 | init_number_or_range (&state, args); |
11315 | ||
11316 | while (!state.finished) | |
c906108c | 11317 | { |
197f0a60 TT |
11318 | char *p = state.string; |
11319 | ||
11cf8741 | 11320 | match = 0; |
c5aa993b | 11321 | |
197f0a60 | 11322 | num = get_number_or_range (&state); |
5c44784c | 11323 | if (num == 0) |
c5aa993b | 11324 | { |
8a3fe4f8 | 11325 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
11326 | } |
11327 | else | |
11328 | { | |
11329 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
11330 | if (b->number == num) | |
11331 | { | |
d0fb5eae JK |
11332 | struct breakpoint *related_breakpoint; |
11333 | ||
11cf8741 | 11334 | match = 1; |
d0fb5eae JK |
11335 | related_breakpoint = b; |
11336 | do | |
11337 | { | |
11338 | struct breakpoint *next_related_b; | |
11339 | ||
11340 | /* FUNCTION can be also delete_breakpoint. */ | |
11341 | next_related_b = related_breakpoint->related_breakpoint; | |
11342 | function (related_breakpoint, data); | |
11343 | ||
11344 | /* For delete_breakpoint of the last entry of the ring we | |
11345 | were traversing we would never get back to B. */ | |
11346 | if (next_related_b == related_breakpoint) | |
11347 | break; | |
11348 | related_breakpoint = next_related_b; | |
11349 | } | |
11350 | while (related_breakpoint != b); | |
11cf8741 | 11351 | break; |
5c44784c | 11352 | } |
11cf8741 | 11353 | if (match == 0) |
a3f17187 | 11354 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 11355 | } |
c906108c SS |
11356 | } |
11357 | } | |
11358 | ||
0d381245 VP |
11359 | static struct bp_location * |
11360 | find_location_by_number (char *number) | |
11361 | { | |
11362 | char *dot = strchr (number, '.'); | |
11363 | char *p1; | |
11364 | int bp_num; | |
11365 | int loc_num; | |
11366 | struct breakpoint *b; | |
11367 | struct bp_location *loc; | |
11368 | ||
11369 | *dot = '\0'; | |
11370 | ||
11371 | p1 = number; | |
197f0a60 | 11372 | bp_num = get_number (&p1); |
0d381245 VP |
11373 | if (bp_num == 0) |
11374 | error (_("Bad breakpoint number '%s'"), number); | |
11375 | ||
11376 | ALL_BREAKPOINTS (b) | |
11377 | if (b->number == bp_num) | |
11378 | { | |
11379 | break; | |
11380 | } | |
11381 | ||
11382 | if (!b || b->number != bp_num) | |
11383 | error (_("Bad breakpoint number '%s'"), number); | |
11384 | ||
11385 | p1 = dot+1; | |
197f0a60 | 11386 | loc_num = get_number (&p1); |
0d381245 VP |
11387 | if (loc_num == 0) |
11388 | error (_("Bad breakpoint location number '%s'"), number); | |
11389 | ||
11390 | --loc_num; | |
11391 | loc = b->loc; | |
11392 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
11393 | ; | |
11394 | if (!loc) | |
11395 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
11396 | ||
11397 | return loc; | |
11398 | } | |
11399 | ||
11400 | ||
1900040c MS |
11401 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11402 | If from_tty is nonzero, it prints a message to that effect, | |
11403 | which ends with a period (no newline). */ | |
11404 | ||
c906108c | 11405 | void |
fba45db2 | 11406 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11407 | { |
11408 | /* Never disable a watchpoint scope breakpoint; we want to | |
11409 | hit them when we leave scope so we can delete both the | |
11410 | watchpoint and its scope breakpoint at that time. */ | |
11411 | if (bpt->type == bp_watchpoint_scope) | |
11412 | return; | |
11413 | ||
c2c6d25f | 11414 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 11415 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
11416 | return; |
11417 | ||
b5de0fa7 | 11418 | bpt->enable_state = bp_disabled; |
c906108c | 11419 | |
b60e7edf | 11420 | update_global_location_list (0); |
c906108c | 11421 | |
383f836e | 11422 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
11423 | } |
11424 | ||
95a42b64 TT |
11425 | /* A callback for map_breakpoint_numbers that calls |
11426 | disable_breakpoint. */ | |
11427 | ||
11428 | static void | |
11429 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
11430 | { | |
11431 | disable_breakpoint (b); | |
11432 | } | |
11433 | ||
c906108c | 11434 | static void |
fba45db2 | 11435 | disable_command (char *args, int from_tty) |
c906108c | 11436 | { |
52f0bd74 | 11437 | struct breakpoint *bpt; |
cc59ec59 | 11438 | |
c906108c SS |
11439 | if (args == 0) |
11440 | ALL_BREAKPOINTS (bpt) | |
11441 | switch (bpt->type) | |
c5aa993b JM |
11442 | { |
11443 | case bp_none: | |
8a3fe4f8 | 11444 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 11445 | bpt->number); |
488919c4 | 11446 | break; |
c5aa993b | 11447 | case bp_breakpoint: |
1042e4c0 | 11448 | case bp_tracepoint: |
7a697b8d | 11449 | case bp_fast_tracepoint: |
0fb4aa4b | 11450 | case bp_static_tracepoint: |
ce78b96d | 11451 | case bp_catchpoint: |
c5aa993b JM |
11452 | case bp_hardware_breakpoint: |
11453 | case bp_watchpoint: | |
11454 | case bp_hardware_watchpoint: | |
11455 | case bp_read_watchpoint: | |
11456 | case bp_access_watchpoint: | |
11457 | disable_breakpoint (bpt); | |
488919c4 | 11458 | break; |
c5aa993b | 11459 | default: |
488919c4 | 11460 | break; |
c5aa993b | 11461 | } |
0d381245 VP |
11462 | else if (strchr (args, '.')) |
11463 | { | |
11464 | struct bp_location *loc = find_location_by_number (args); | |
11465 | if (loc) | |
11466 | loc->enabled = 0; | |
b60e7edf | 11467 | update_global_location_list (0); |
0d381245 | 11468 | } |
c906108c | 11469 | else |
95a42b64 | 11470 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
11471 | } |
11472 | ||
11473 | static void | |
fba45db2 | 11474 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 11475 | { |
afe38095 | 11476 | int target_resources_ok; |
c906108c SS |
11477 | |
11478 | if (bpt->type == bp_hardware_breakpoint) | |
11479 | { | |
11480 | int i; | |
c5aa993b | 11481 | i = hw_breakpoint_used_count (); |
53a5351d | 11482 | target_resources_ok = |
d92524f1 | 11483 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 11484 | i + 1, 0); |
c906108c | 11485 | if (target_resources_ok == 0) |
8a3fe4f8 | 11486 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 11487 | else if (target_resources_ok < 0) |
8a3fe4f8 | 11488 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
11489 | } |
11490 | ||
cc60f2e3 | 11491 | if (is_watchpoint (bpt)) |
c906108c | 11492 | { |
dde02812 ES |
11493 | struct gdb_exception e; |
11494 | ||
11495 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 11496 | { |
dde02812 | 11497 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 11498 | } |
dde02812 | 11499 | if (e.reason < 0) |
c5aa993b | 11500 | { |
dde02812 ES |
11501 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
11502 | bpt->number); | |
11503 | return; | |
c5aa993b | 11504 | } |
c906108c | 11505 | } |
0101ce28 | 11506 | |
b4c291bb KH |
11507 | if (bpt->enable_state != bp_permanent) |
11508 | bpt->enable_state = bp_enabled; | |
11509 | bpt->disposition = disposition; | |
b60e7edf | 11510 | update_global_location_list (1); |
b4c291bb KH |
11511 | breakpoints_changed (); |
11512 | ||
383f836e | 11513 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
11514 | } |
11515 | ||
fe3f5fa8 | 11516 | |
c906108c | 11517 | void |
fba45db2 | 11518 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11519 | { |
11520 | do_enable_breakpoint (bpt, bpt->disposition); | |
11521 | } | |
11522 | ||
95a42b64 TT |
11523 | /* A callback for map_breakpoint_numbers that calls |
11524 | enable_breakpoint. */ | |
11525 | ||
11526 | static void | |
11527 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
11528 | { | |
11529 | enable_breakpoint (b); | |
11530 | } | |
11531 | ||
c906108c SS |
11532 | /* The enable command enables the specified breakpoints (or all defined |
11533 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 11534 | in stopping the inferior. */ |
c906108c | 11535 | |
c906108c | 11536 | static void |
fba45db2 | 11537 | enable_command (char *args, int from_tty) |
c906108c | 11538 | { |
52f0bd74 | 11539 | struct breakpoint *bpt; |
cc59ec59 | 11540 | |
c906108c SS |
11541 | if (args == 0) |
11542 | ALL_BREAKPOINTS (bpt) | |
11543 | switch (bpt->type) | |
c5aa993b JM |
11544 | { |
11545 | case bp_none: | |
8a3fe4f8 | 11546 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 11547 | bpt->number); |
488919c4 | 11548 | break; |
c5aa993b | 11549 | case bp_breakpoint: |
1042e4c0 | 11550 | case bp_tracepoint: |
7a697b8d | 11551 | case bp_fast_tracepoint: |
0fb4aa4b | 11552 | case bp_static_tracepoint: |
ce78b96d | 11553 | case bp_catchpoint: |
c5aa993b JM |
11554 | case bp_hardware_breakpoint: |
11555 | case bp_watchpoint: | |
11556 | case bp_hardware_watchpoint: | |
11557 | case bp_read_watchpoint: | |
11558 | case bp_access_watchpoint: | |
11559 | enable_breakpoint (bpt); | |
488919c4 | 11560 | break; |
c5aa993b | 11561 | default: |
488919c4 | 11562 | break; |
c5aa993b | 11563 | } |
0d381245 VP |
11564 | else if (strchr (args, '.')) |
11565 | { | |
11566 | struct bp_location *loc = find_location_by_number (args); | |
11567 | if (loc) | |
11568 | loc->enabled = 1; | |
b60e7edf | 11569 | update_global_location_list (1); |
0d381245 | 11570 | } |
c906108c | 11571 | else |
95a42b64 | 11572 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
11573 | } |
11574 | ||
11575 | static void | |
95a42b64 | 11576 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11577 | { |
b5de0fa7 | 11578 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
11579 | } |
11580 | ||
c906108c | 11581 | static void |
fba45db2 | 11582 | enable_once_command (char *args, int from_tty) |
c906108c | 11583 | { |
95a42b64 | 11584 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
11585 | } |
11586 | ||
11587 | static void | |
95a42b64 | 11588 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11589 | { |
b5de0fa7 | 11590 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
11591 | } |
11592 | ||
c906108c | 11593 | static void |
fba45db2 | 11594 | enable_delete_command (char *args, int from_tty) |
c906108c | 11595 | { |
95a42b64 | 11596 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
11597 | } |
11598 | \f | |
fa8d40ab JJ |
11599 | static void |
11600 | set_breakpoint_cmd (char *args, int from_tty) | |
11601 | { | |
11602 | } | |
11603 | ||
11604 | static void | |
11605 | show_breakpoint_cmd (char *args, int from_tty) | |
11606 | { | |
11607 | } | |
11608 | ||
1f3b5d1b PP |
11609 | /* Invalidate last known value of any hardware watchpoint if |
11610 | the memory which that value represents has been written to by | |
11611 | GDB itself. */ | |
11612 | ||
11613 | static void | |
11614 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
11615 | const bfd_byte *data) | |
11616 | { | |
11617 | struct breakpoint *bp; | |
11618 | ||
11619 | ALL_BREAKPOINTS (bp) | |
11620 | if (bp->enable_state == bp_enabled | |
11621 | && bp->type == bp_hardware_watchpoint | |
11622 | && bp->val_valid && bp->val) | |
11623 | { | |
11624 | struct bp_location *loc; | |
11625 | ||
11626 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
11627 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
11628 | && loc->address + loc->length > addr | |
11629 | && addr + len > loc->address) | |
11630 | { | |
11631 | value_free (bp->val); | |
11632 | bp->val = NULL; | |
11633 | bp->val_valid = 0; | |
11634 | } | |
11635 | } | |
11636 | } | |
11637 | ||
c906108c SS |
11638 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
11639 | ||
11640 | struct symtabs_and_lines | |
fba45db2 | 11641 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
11642 | { |
11643 | struct symtabs_and_lines sals; | |
cc59ec59 | 11644 | |
c906108c | 11645 | if (string == 0) |
8a3fe4f8 | 11646 | error (_("Empty line specification.")); |
c906108c SS |
11647 | if (default_breakpoint_valid) |
11648 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
11649 | default_breakpoint_symtab, |
11650 | default_breakpoint_line, | |
58438ac1 | 11651 | NULL); |
c906108c SS |
11652 | else |
11653 | sals = decode_line_1 (&string, funfirstline, | |
58438ac1 | 11654 | (struct symtab *) NULL, 0, NULL); |
c906108c | 11655 | if (*string) |
8a3fe4f8 | 11656 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
11657 | return sals; |
11658 | } | |
8181d85f DJ |
11659 | |
11660 | /* Create and insert a raw software breakpoint at PC. Return an | |
11661 | identifier, which should be used to remove the breakpoint later. | |
11662 | In general, places which call this should be using something on the | |
11663 | breakpoint chain instead; this function should be eliminated | |
11664 | someday. */ | |
11665 | ||
11666 | void * | |
6c95b8df PA |
11667 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
11668 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
11669 | { |
11670 | struct bp_target_info *bp_tgt; | |
11671 | ||
6c95b8df | 11672 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 11673 | |
6c95b8df | 11674 | bp_tgt->placed_address_space = aspace; |
8181d85f | 11675 | bp_tgt->placed_address = pc; |
6c95b8df | 11676 | |
a6d9a66e | 11677 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
11678 | { |
11679 | /* Could not insert the breakpoint. */ | |
11680 | xfree (bp_tgt); | |
11681 | return NULL; | |
11682 | } | |
11683 | ||
11684 | return bp_tgt; | |
11685 | } | |
11686 | ||
4a64f543 MS |
11687 | /* Remove a breakpoint BP inserted by |
11688 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11689 | |
11690 | int | |
a6d9a66e | 11691 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11692 | { |
11693 | struct bp_target_info *bp_tgt = bp; | |
11694 | int ret; | |
11695 | ||
a6d9a66e | 11696 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11697 | xfree (bp_tgt); |
11698 | ||
11699 | return ret; | |
11700 | } | |
11701 | ||
4a64f543 MS |
11702 | /* One (or perhaps two) breakpoints used for software single |
11703 | stepping. */ | |
8181d85f DJ |
11704 | |
11705 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11706 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11707 | |
11708 | /* Create and insert a breakpoint for software single step. */ | |
11709 | ||
11710 | void | |
6c95b8df | 11711 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11712 | struct address_space *aspace, |
11713 | CORE_ADDR next_pc) | |
8181d85f DJ |
11714 | { |
11715 | void **bpt_p; | |
11716 | ||
11717 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11718 | { |
11719 | bpt_p = &single_step_breakpoints[0]; | |
11720 | single_step_gdbarch[0] = gdbarch; | |
11721 | } | |
8181d85f DJ |
11722 | else |
11723 | { | |
11724 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11725 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11726 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11727 | } |
11728 | ||
4a64f543 MS |
11729 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11730 | be to only create the breakpoints once, and actually put them on | |
11731 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11732 | We could adjust the addresses each time they were needed. Doing | |
11733 | this requires corresponding changes elsewhere where single step | |
11734 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11735 | |
6c95b8df | 11736 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11737 | if (*bpt_p == NULL) |
5af949e3 UW |
11738 | error (_("Could not insert single-step breakpoint at %s"), |
11739 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11740 | } |
11741 | ||
f02253f1 HZ |
11742 | /* Check if the breakpoints used for software single stepping |
11743 | were inserted or not. */ | |
11744 | ||
11745 | int | |
11746 | single_step_breakpoints_inserted (void) | |
11747 | { | |
11748 | return (single_step_breakpoints[0] != NULL | |
11749 | || single_step_breakpoints[1] != NULL); | |
11750 | } | |
11751 | ||
8181d85f DJ |
11752 | /* Remove and delete any breakpoints used for software single step. */ |
11753 | ||
11754 | void | |
11755 | remove_single_step_breakpoints (void) | |
11756 | { | |
11757 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11758 | ||
11759 | /* See insert_single_step_breakpoint for more about this deprecated | |
11760 | call. */ | |
a6d9a66e UW |
11761 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11762 | single_step_breakpoints[0]); | |
11763 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11764 | single_step_breakpoints[0] = NULL; |
11765 | ||
11766 | if (single_step_breakpoints[1] != NULL) | |
11767 | { | |
a6d9a66e UW |
11768 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11769 | single_step_breakpoints[1]); | |
11770 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11771 | single_step_breakpoints[1] = NULL; |
11772 | } | |
11773 | } | |
11774 | ||
d03285ec UW |
11775 | /* Delete software single step breakpoints without removing them from |
11776 | the inferior. This is intended to be used if the inferior's address | |
11777 | space where they were inserted is already gone, e.g. after exit or | |
11778 | exec. */ | |
11779 | ||
11780 | void | |
11781 | cancel_single_step_breakpoints (void) | |
11782 | { | |
11783 | int i; | |
11784 | ||
11785 | for (i = 0; i < 2; i++) | |
11786 | if (single_step_breakpoints[i]) | |
11787 | { | |
11788 | xfree (single_step_breakpoints[i]); | |
11789 | single_step_breakpoints[i] = NULL; | |
11790 | single_step_gdbarch[i] = NULL; | |
11791 | } | |
11792 | } | |
11793 | ||
11794 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11795 | removing them. */ | |
11796 | ||
11797 | static void | |
11798 | detach_single_step_breakpoints (void) | |
11799 | { | |
11800 | int i; | |
11801 | ||
11802 | for (i = 0; i < 2; i++) | |
11803 | if (single_step_breakpoints[i]) | |
11804 | target_remove_breakpoint (single_step_gdbarch[i], | |
11805 | single_step_breakpoints[i]); | |
11806 | } | |
11807 | ||
4a64f543 MS |
11808 | /* Check whether a software single-step breakpoint is inserted at |
11809 | PC. */ | |
1aafd4da UW |
11810 | |
11811 | static int | |
cc59ec59 MS |
11812 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11813 | CORE_ADDR pc) | |
1aafd4da UW |
11814 | { |
11815 | int i; | |
11816 | ||
11817 | for (i = 0; i < 2; i++) | |
11818 | { | |
11819 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11820 | if (bp_tgt |
11821 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11822 | bp_tgt->placed_address, | |
11823 | aspace, pc)) | |
1aafd4da UW |
11824 | return 1; |
11825 | } | |
11826 | ||
11827 | return 0; | |
11828 | } | |
11829 | ||
a96d9b2e SDJ |
11830 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11831 | non-zero otherwise. */ | |
11832 | static int | |
11833 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11834 | { | |
11835 | if (syscall_catchpoint_p (bp) | |
11836 | && bp->enable_state != bp_disabled | |
11837 | && bp->enable_state != bp_call_disabled) | |
11838 | return 1; | |
11839 | else | |
11840 | return 0; | |
11841 | } | |
11842 | ||
11843 | int | |
11844 | catch_syscall_enabled (void) | |
11845 | { | |
11846 | struct inferior *inf = current_inferior (); | |
11847 | ||
11848 | return inf->total_syscalls_count != 0; | |
11849 | } | |
11850 | ||
11851 | int | |
11852 | catching_syscall_number (int syscall_number) | |
11853 | { | |
11854 | struct breakpoint *bp; | |
11855 | ||
11856 | ALL_BREAKPOINTS (bp) | |
11857 | if (is_syscall_catchpoint_enabled (bp)) | |
11858 | { | |
11859 | if (bp->syscalls_to_be_caught) | |
11860 | { | |
11861 | int i, iter; | |
11862 | for (i = 0; | |
11863 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11864 | i++) | |
11865 | if (syscall_number == iter) | |
11866 | return 1; | |
11867 | } | |
11868 | else | |
11869 | return 1; | |
11870 | } | |
11871 | ||
11872 | return 0; | |
11873 | } | |
11874 | ||
11875 | /* Complete syscall names. Used by "catch syscall". */ | |
11876 | static char ** | |
11877 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11878 | char *text, char *word) | |
11879 | { | |
11880 | const char **list = get_syscall_names (); | |
c38eea1a MS |
11881 | char **retlist |
11882 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 11883 | |
c38eea1a MS |
11884 | xfree (list); |
11885 | return retlist; | |
a96d9b2e SDJ |
11886 | } |
11887 | ||
1042e4c0 SS |
11888 | /* Tracepoint-specific operations. */ |
11889 | ||
11890 | /* Set tracepoint count to NUM. */ | |
11891 | static void | |
11892 | set_tracepoint_count (int num) | |
11893 | { | |
11894 | tracepoint_count = num; | |
4fa62494 | 11895 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11896 | } |
11897 | ||
11898 | void | |
11899 | trace_command (char *arg, int from_tty) | |
11900 | { | |
8cdf0e15 VP |
11901 | if (create_breakpoint (get_current_arch (), |
11902 | arg, | |
11903 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11904 | 0 /* tempflag */, |
11905 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11906 | 0 /* Ignore count */, |
11907 | pending_break_support, | |
11908 | NULL, | |
11909 | from_tty, | |
84f4c1fe PM |
11910 | 1 /* enabled */, |
11911 | 0 /* internal */)) | |
fd9b8c24 | 11912 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11913 | } |
11914 | ||
7a697b8d SS |
11915 | void |
11916 | ftrace_command (char *arg, int from_tty) | |
11917 | { | |
8cdf0e15 VP |
11918 | if (create_breakpoint (get_current_arch (), |
11919 | arg, | |
11920 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11921 | 0 /* tempflag */, |
11922 | bp_fast_tracepoint /* type_wanted */, | |
11923 | 0 /* Ignore count */, | |
11924 | pending_break_support, | |
11925 | NULL, | |
11926 | from_tty, | |
84f4c1fe PM |
11927 | 1 /* enabled */, |
11928 | 0 /* internal */)) | |
0fb4aa4b PA |
11929 | set_tracepoint_count (breakpoint_count); |
11930 | } | |
11931 | ||
11932 | /* strace command implementation. Creates a static tracepoint. */ | |
11933 | ||
11934 | void | |
11935 | strace_command (char *arg, int from_tty) | |
11936 | { | |
11937 | if (create_breakpoint (get_current_arch (), | |
11938 | arg, | |
11939 | NULL, 0, 1 /* parse arg */, | |
11940 | 0 /* tempflag */, | |
11941 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11942 | 0 /* Ignore count */, |
11943 | pending_break_support, | |
11944 | NULL, | |
11945 | from_tty, | |
84f4c1fe PM |
11946 | 1 /* enabled */, |
11947 | 0 /* internal */)) | |
fd9b8c24 | 11948 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11949 | } |
11950 | ||
409873ef SS |
11951 | /* Set up a fake reader function that gets command lines from a linked |
11952 | list that was acquired during tracepoint uploading. */ | |
11953 | ||
11954 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11955 | static int next_cmd; |
409873ef SS |
11956 | |
11957 | static char * | |
11958 | read_uploaded_action (void) | |
11959 | { | |
11960 | char *rslt; | |
11961 | ||
3149d8c1 | 11962 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11963 | |
3149d8c1 | 11964 | next_cmd++; |
409873ef SS |
11965 | |
11966 | return rslt; | |
11967 | } | |
11968 | ||
00bf0b85 SS |
11969 | /* Given information about a tracepoint as recorded on a target (which |
11970 | can be either a live system or a trace file), attempt to create an | |
11971 | equivalent GDB tracepoint. This is not a reliable process, since | |
11972 | the target does not necessarily have all the information used when | |
11973 | the tracepoint was originally defined. */ | |
11974 | ||
11975 | struct breakpoint * | |
11976 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11977 | { |
409873ef | 11978 | char *addr_str, small_buf[100]; |
d5551862 | 11979 | struct breakpoint *tp; |
fd9b8c24 | 11980 | |
409873ef SS |
11981 | if (utp->at_string) |
11982 | addr_str = utp->at_string; | |
11983 | else | |
11984 | { | |
11985 | /* In the absence of a source location, fall back to raw | |
11986 | address. Since there is no way to confirm that the address | |
11987 | means the same thing as when the trace was started, warn the | |
11988 | user. */ | |
3e43a32a MS |
11989 | warning (_("Uploaded tracepoint %d has no " |
11990 | "source location, using raw address"), | |
409873ef SS |
11991 | utp->number); |
11992 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11993 | addr_str = small_buf; | |
11994 | } | |
11995 | ||
11996 | /* There's not much we can do with a sequence of bytecodes. */ | |
11997 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
11998 | warning (_("Uploaded tracepoint %d condition " |
11999 | "has no source form, ignoring it"), | |
409873ef | 12000 | utp->number); |
d5551862 | 12001 | |
8cdf0e15 | 12002 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
12003 | addr_str, |
12004 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 12005 | 0 /* tempflag */, |
0fb4aa4b | 12006 | utp->type /* type_wanted */, |
8cdf0e15 VP |
12007 | 0 /* Ignore count */, |
12008 | pending_break_support, | |
12009 | NULL, | |
12010 | 0 /* from_tty */, | |
84f4c1fe PM |
12011 | utp->enabled /* enabled */, |
12012 | 0 /* internal */)) | |
fd9b8c24 PA |
12013 | return NULL; |
12014 | ||
00bf0b85 SS |
12015 | set_tracepoint_count (breakpoint_count); |
12016 | ||
409873ef | 12017 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
12018 | tp = get_tracepoint (tracepoint_count); |
12019 | gdb_assert (tp != NULL); | |
d5551862 | 12020 | |
00bf0b85 SS |
12021 | if (utp->pass > 0) |
12022 | { | |
409873ef | 12023 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 12024 | |
409873ef | 12025 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
12026 | } |
12027 | ||
409873ef SS |
12028 | /* If we have uploaded versions of the original commands, set up a |
12029 | special-purpose "reader" function and call the usual command line | |
12030 | reader, then pass the result to the breakpoint command-setting | |
12031 | function. */ | |
3149d8c1 | 12032 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 12033 | { |
409873ef | 12034 | struct command_line *cmd_list; |
00bf0b85 | 12035 | |
409873ef | 12036 | this_utp = utp; |
3149d8c1 | 12037 | next_cmd = 0; |
d5551862 | 12038 | |
409873ef SS |
12039 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
12040 | ||
12041 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 12042 | } |
3149d8c1 SS |
12043 | else if (!VEC_empty (char_ptr, utp->actions) |
12044 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
12045 | warning (_("Uploaded tracepoint %d actions " |
12046 | "have no source form, ignoring them"), | |
409873ef | 12047 | utp->number); |
00bf0b85 SS |
12048 | |
12049 | return tp; | |
12050 | } | |
12051 | ||
1042e4c0 SS |
12052 | /* Print information on tracepoint number TPNUM_EXP, or all if |
12053 | omitted. */ | |
12054 | ||
12055 | static void | |
e5a67952 | 12056 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 12057 | { |
e5a67952 | 12058 | int num_printed; |
1042e4c0 | 12059 | |
e5a67952 | 12060 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
12061 | |
12062 | if (num_printed == 0) | |
1042e4c0 | 12063 | { |
e5a67952 | 12064 | if (args == NULL || *args == '\0') |
d77f58be SS |
12065 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
12066 | else | |
e5a67952 | 12067 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 12068 | } |
ad443146 SS |
12069 | |
12070 | default_collect_info (); | |
1042e4c0 SS |
12071 | } |
12072 | ||
4a64f543 | 12073 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
12074 | Not supported by all targets. */ |
12075 | static void | |
12076 | enable_trace_command (char *args, int from_tty) | |
12077 | { | |
12078 | enable_command (args, from_tty); | |
12079 | } | |
12080 | ||
4a64f543 | 12081 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
12082 | Not supported by all targets. */ |
12083 | static void | |
12084 | disable_trace_command (char *args, int from_tty) | |
12085 | { | |
12086 | disable_command (args, from_tty); | |
12087 | } | |
12088 | ||
4a64f543 | 12089 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
12090 | static void |
12091 | delete_trace_command (char *arg, int from_tty) | |
12092 | { | |
35df4500 | 12093 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
12094 | |
12095 | dont_repeat (); | |
12096 | ||
12097 | if (arg == 0) | |
12098 | { | |
12099 | int breaks_to_delete = 0; | |
12100 | ||
12101 | /* Delete all breakpoints if no argument. | |
12102 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
12103 | have to be deleted with an explicit breakpoint number |
12104 | argument. */ | |
1042e4c0 SS |
12105 | ALL_TRACEPOINTS (b) |
12106 | { | |
12107 | if (b->number >= 0) | |
12108 | { | |
12109 | breaks_to_delete = 1; | |
12110 | break; | |
12111 | } | |
12112 | } | |
12113 | ||
12114 | /* Ask user only if there are some breakpoints to delete. */ | |
12115 | if (!from_tty | |
12116 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
12117 | { | |
35df4500 | 12118 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
1042e4c0 | 12119 | { |
d77f58be | 12120 | if (is_tracepoint (b) |
059fb39f | 12121 | && b->number >= 0) |
1042e4c0 SS |
12122 | delete_breakpoint (b); |
12123 | } | |
12124 | } | |
12125 | } | |
12126 | else | |
95a42b64 | 12127 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
12128 | } |
12129 | ||
197f0a60 TT |
12130 | /* Helper function for trace_pass_command. */ |
12131 | ||
12132 | static void | |
12133 | trace_pass_set_count (struct breakpoint *bp, int count, int from_tty) | |
12134 | { | |
12135 | bp->pass_count = count; | |
12136 | observer_notify_tracepoint_modified (bp->number); | |
12137 | if (from_tty) | |
12138 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
12139 | bp->number, count); | |
12140 | } | |
12141 | ||
1042e4c0 SS |
12142 | /* Set passcount for tracepoint. |
12143 | ||
12144 | First command argument is passcount, second is tracepoint number. | |
12145 | If tracepoint number omitted, apply to most recently defined. | |
12146 | Also accepts special argument "all". */ | |
12147 | ||
12148 | static void | |
12149 | trace_pass_command (char *args, int from_tty) | |
12150 | { | |
197f0a60 | 12151 | struct breakpoint *t1; |
1042e4c0 | 12152 | unsigned int count; |
1042e4c0 SS |
12153 | |
12154 | if (args == 0 || *args == 0) | |
3e43a32a MS |
12155 | error (_("passcount command requires an " |
12156 | "argument (count + optional TP num)")); | |
1042e4c0 | 12157 | |
4a64f543 | 12158 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
12159 | |
12160 | while (*args && isspace ((int) *args)) | |
12161 | args++; | |
12162 | ||
12163 | if (*args && strncasecmp (args, "all", 3) == 0) | |
12164 | { | |
12165 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
12166 | if (*args) |
12167 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 12168 | |
197f0a60 TT |
12169 | ALL_TRACEPOINTS (t1) |
12170 | { | |
12171 | trace_pass_set_count (t1, count, from_tty); | |
12172 | } | |
12173 | } | |
12174 | else if (*args == '\0') | |
1042e4c0 | 12175 | { |
197f0a60 | 12176 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 12177 | if (t1) |
197f0a60 TT |
12178 | trace_pass_set_count (t1, count, from_tty); |
12179 | } | |
12180 | else | |
12181 | { | |
12182 | struct get_number_or_range_state state; | |
12183 | ||
12184 | init_number_or_range (&state, args); | |
12185 | while (!state.finished) | |
1042e4c0 | 12186 | { |
197f0a60 TT |
12187 | t1 = get_tracepoint_by_number (&args, &state, 1); |
12188 | if (t1) | |
12189 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
12190 | } |
12191 | } | |
1042e4c0 SS |
12192 | } |
12193 | ||
12194 | struct breakpoint * | |
12195 | get_tracepoint (int num) | |
12196 | { | |
12197 | struct breakpoint *t; | |
12198 | ||
12199 | ALL_TRACEPOINTS (t) | |
12200 | if (t->number == num) | |
12201 | return t; | |
12202 | ||
12203 | return NULL; | |
12204 | } | |
12205 | ||
d5551862 SS |
12206 | /* Find the tracepoint with the given target-side number (which may be |
12207 | different from the tracepoint number after disconnecting and | |
12208 | reconnecting). */ | |
12209 | ||
12210 | struct breakpoint * | |
12211 | get_tracepoint_by_number_on_target (int num) | |
12212 | { | |
12213 | struct breakpoint *t; | |
12214 | ||
12215 | ALL_TRACEPOINTS (t) | |
12216 | if (t->number_on_target == num) | |
12217 | return t; | |
12218 | ||
12219 | return NULL; | |
12220 | } | |
12221 | ||
1042e4c0 | 12222 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
12223 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
12224 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 SS |
12225 | recent tracepoint (tracepoint_count) is returned. */ |
12226 | struct breakpoint * | |
197f0a60 TT |
12227 | get_tracepoint_by_number (char **arg, |
12228 | struct get_number_or_range_state *state, | |
12229 | int optional_p) | |
1042e4c0 SS |
12230 | { |
12231 | extern int tracepoint_count; | |
12232 | struct breakpoint *t; | |
12233 | int tpnum; | |
12234 | char *instring = arg == NULL ? NULL : *arg; | |
12235 | ||
197f0a60 TT |
12236 | if (state) |
12237 | { | |
12238 | gdb_assert (!state->finished); | |
12239 | tpnum = get_number_or_range (state); | |
12240 | } | |
12241 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
12242 | { |
12243 | if (optional_p) | |
12244 | tpnum = tracepoint_count; | |
12245 | else | |
12246 | error_no_arg (_("tracepoint number")); | |
12247 | } | |
12248 | else | |
197f0a60 | 12249 | tpnum = get_number (arg); |
1042e4c0 SS |
12250 | |
12251 | if (tpnum <= 0) | |
12252 | { | |
12253 | if (instring && *instring) | |
12254 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
12255 | instring); | |
12256 | else | |
3e43a32a MS |
12257 | printf_filtered (_("Tracepoint argument missing " |
12258 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
12259 | return NULL; |
12260 | } | |
12261 | ||
12262 | ALL_TRACEPOINTS (t) | |
12263 | if (t->number == tpnum) | |
12264 | { | |
12265 | return t; | |
12266 | } | |
12267 | ||
1042e4c0 SS |
12268 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
12269 | return NULL; | |
12270 | } | |
12271 | ||
6149aea9 PA |
12272 | /* Save information on user settable breakpoints (watchpoints, etc) to |
12273 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
12274 | on each breakpoint and only include the ones for which it returns | |
12275 | non-zero. */ | |
12276 | ||
1042e4c0 | 12277 | static void |
6149aea9 PA |
12278 | save_breakpoints (char *filename, int from_tty, |
12279 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
12280 | { |
12281 | struct breakpoint *tp; | |
6149aea9 | 12282 | int any = 0; |
a7bdde9e | 12283 | char *pathname; |
1042e4c0 | 12284 | struct cleanup *cleanup; |
a7bdde9e | 12285 | struct ui_file *fp; |
6149aea9 | 12286 | int extra_trace_bits = 0; |
1042e4c0 | 12287 | |
6149aea9 PA |
12288 | if (filename == 0 || *filename == 0) |
12289 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
12290 | |
12291 | /* See if we have anything to save. */ | |
6149aea9 | 12292 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 12293 | { |
6149aea9 | 12294 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 12295 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
12296 | continue; |
12297 | ||
12298 | /* If we have a filter, only save the breakpoints it accepts. */ | |
12299 | if (filter && !filter (tp)) | |
12300 | continue; | |
12301 | ||
12302 | any = 1; | |
12303 | ||
12304 | if (is_tracepoint (tp)) | |
12305 | { | |
12306 | extra_trace_bits = 1; | |
12307 | ||
12308 | /* We can stop searching. */ | |
12309 | break; | |
12310 | } | |
1042e4c0 | 12311 | } |
6149aea9 PA |
12312 | |
12313 | if (!any) | |
1042e4c0 | 12314 | { |
6149aea9 | 12315 | warning (_("Nothing to save.")); |
1042e4c0 SS |
12316 | return; |
12317 | } | |
12318 | ||
6149aea9 | 12319 | pathname = tilde_expand (filename); |
1042e4c0 | 12320 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 12321 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 12322 | if (!fp) |
6149aea9 PA |
12323 | error (_("Unable to open file '%s' for saving (%s)"), |
12324 | filename, safe_strerror (errno)); | |
a7bdde9e | 12325 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 12326 | |
6149aea9 PA |
12327 | if (extra_trace_bits) |
12328 | save_trace_state_variables (fp); | |
8bf6485c | 12329 | |
6149aea9 | 12330 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 12331 | { |
6149aea9 | 12332 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 12333 | if (!user_breakpoint_p (tp)) |
6149aea9 | 12334 | continue; |
8bf6485c | 12335 | |
6149aea9 PA |
12336 | /* If we have a filter, only save the breakpoints it accepts. */ |
12337 | if (filter && !filter (tp)) | |
12338 | continue; | |
12339 | ||
12340 | if (tp->ops != NULL) | |
12341 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
12342 | else |
12343 | { | |
6149aea9 PA |
12344 | if (tp->type == bp_fast_tracepoint) |
12345 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
12346 | if (tp->type == bp_static_tracepoint) |
12347 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
12348 | else if (tp->type == bp_tracepoint) |
12349 | fprintf_unfiltered (fp, "trace"); | |
12350 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12351 | fprintf_unfiltered (fp, "tbreak"); | |
12352 | else if (tp->type == bp_breakpoint) | |
12353 | fprintf_unfiltered (fp, "break"); | |
12354 | else if (tp->type == bp_hardware_breakpoint | |
12355 | && tp->disposition == disp_del) | |
12356 | fprintf_unfiltered (fp, "thbreak"); | |
12357 | else if (tp->type == bp_hardware_breakpoint) | |
12358 | fprintf_unfiltered (fp, "hbreak"); | |
12359 | else if (tp->type == bp_watchpoint) | |
12360 | fprintf_unfiltered (fp, "watch"); | |
12361 | else if (tp->type == bp_hardware_watchpoint) | |
12362 | fprintf_unfiltered (fp, "watch"); | |
12363 | else if (tp->type == bp_read_watchpoint) | |
12364 | fprintf_unfiltered (fp, "rwatch"); | |
12365 | else if (tp->type == bp_access_watchpoint) | |
12366 | fprintf_unfiltered (fp, "awatch"); | |
12367 | else | |
12368 | internal_error (__FILE__, __LINE__, | |
12369 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12370 | ||
12371 | if (tp->exp_string) | |
12372 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
12373 | else if (tp->addr_string) | |
12374 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
12375 | else | |
12376 | { | |
12377 | char tmp[40]; | |
12378 | ||
12379 | sprintf_vma (tmp, tp->loc->address); | |
12380 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
12381 | } | |
1042e4c0 SS |
12382 | } |
12383 | ||
6149aea9 PA |
12384 | if (tp->thread != -1) |
12385 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
12386 | ||
12387 | if (tp->task != 0) | |
12388 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
12389 | |
12390 | fprintf_unfiltered (fp, "\n"); | |
12391 | ||
6149aea9 PA |
12392 | /* Note, we can't rely on tp->number for anything, as we can't |
12393 | assume the recreated breakpoint numbers will match. Use $bpnum | |
12394 | instead. */ | |
12395 | ||
12396 | if (tp->cond_string) | |
12397 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
12398 | ||
12399 | if (tp->ignore_count) | |
12400 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
12401 | ||
1042e4c0 | 12402 | if (tp->pass_count) |
a7bdde9e | 12403 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 12404 | |
a7bdde9e | 12405 | if (tp->commands) |
1042e4c0 | 12406 | { |
a7bdde9e VP |
12407 | volatile struct gdb_exception ex; |
12408 | ||
6149aea9 | 12409 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
12410 | |
12411 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 12412 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 12413 | { |
9add0f1b | 12414 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
12415 | } |
12416 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 12417 | |
a7bdde9e VP |
12418 | if (ex.reason < 0) |
12419 | throw_exception (ex); | |
1042e4c0 | 12420 | |
a7bdde9e | 12421 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 12422 | } |
6149aea9 PA |
12423 | |
12424 | if (tp->enable_state == bp_disabled) | |
12425 | fprintf_unfiltered (fp, "disable\n"); | |
12426 | ||
12427 | /* If this is a multi-location breakpoint, check if the locations | |
12428 | should be individually disabled. Watchpoint locations are | |
12429 | special, and not user visible. */ | |
12430 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
12431 | { | |
12432 | struct bp_location *loc; | |
12433 | int n = 1; | |
12434 | ||
12435 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
12436 | if (!loc->enabled) | |
12437 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
12438 | } | |
1042e4c0 | 12439 | } |
8bf6485c | 12440 | |
6149aea9 | 12441 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
12442 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
12443 | ||
1042e4c0 SS |
12444 | do_cleanups (cleanup); |
12445 | if (from_tty) | |
6149aea9 PA |
12446 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
12447 | } | |
12448 | ||
12449 | /* The `save breakpoints' command. */ | |
12450 | ||
12451 | static void | |
12452 | save_breakpoints_command (char *args, int from_tty) | |
12453 | { | |
12454 | save_breakpoints (args, from_tty, NULL); | |
12455 | } | |
12456 | ||
12457 | /* The `save tracepoints' command. */ | |
12458 | ||
12459 | static void | |
12460 | save_tracepoints_command (char *args, int from_tty) | |
12461 | { | |
12462 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
12463 | } |
12464 | ||
12465 | /* Create a vector of all tracepoints. */ | |
12466 | ||
12467 | VEC(breakpoint_p) * | |
eeae04df | 12468 | all_tracepoints (void) |
1042e4c0 SS |
12469 | { |
12470 | VEC(breakpoint_p) *tp_vec = 0; | |
12471 | struct breakpoint *tp; | |
12472 | ||
12473 | ALL_TRACEPOINTS (tp) | |
12474 | { | |
12475 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
12476 | } | |
12477 | ||
12478 | return tp_vec; | |
12479 | } | |
12480 | ||
c906108c | 12481 | \f |
4a64f543 MS |
12482 | /* This help string is used for the break, hbreak, tbreak and thbreak |
12483 | commands. It is defined as a macro to prevent duplication. | |
12484 | COMMAND should be a string constant containing the name of the | |
12485 | command. */ | |
31e2b00f AS |
12486 | #define BREAK_ARGS_HELP(command) \ |
12487 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
12488 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
12489 | If a line number is specified, break at start of code for that line.\n\ | |
12490 | If a function is specified, break at start of code for that function.\n\ | |
12491 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
12492 | With no LOCATION, uses current execution address of the selected\n\ |
12493 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
12494 | \n\ |
12495 | THREADNUM is the number from \"info threads\".\n\ | |
12496 | CONDITION is a boolean expression.\n\ | |
12497 | \n\ | |
d41c0fc8 PA |
12498 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
12499 | conditions are different.\n\ | |
31e2b00f AS |
12500 | \n\ |
12501 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
12502 | ||
44feb3ce TT |
12503 | /* List of subcommands for "catch". */ |
12504 | static struct cmd_list_element *catch_cmdlist; | |
12505 | ||
12506 | /* List of subcommands for "tcatch". */ | |
12507 | static struct cmd_list_element *tcatch_cmdlist; | |
12508 | ||
12509 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
12510 | lists, and pass some additional user data to the command function. */ | |
12511 | static void | |
12512 | add_catch_command (char *name, char *docstring, | |
12513 | void (*sfunc) (char *args, int from_tty, | |
12514 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
12515 | char **(*completer) (struct cmd_list_element *cmd, |
12516 | char *text, char *word), | |
44feb3ce TT |
12517 | void *user_data_catch, |
12518 | void *user_data_tcatch) | |
12519 | { | |
12520 | struct cmd_list_element *command; | |
12521 | ||
12522 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12523 | &catch_cmdlist); | |
12524 | set_cmd_sfunc (command, sfunc); | |
12525 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 12526 | set_cmd_completer (command, completer); |
44feb3ce TT |
12527 | |
12528 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12529 | &tcatch_cmdlist); | |
12530 | set_cmd_sfunc (command, sfunc); | |
12531 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 12532 | set_cmd_completer (command, completer); |
44feb3ce TT |
12533 | } |
12534 | ||
6c95b8df | 12535 | static void |
a79b8f6e | 12536 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 12537 | { |
6c95b8df PA |
12538 | inf->total_syscalls_count = 0; |
12539 | inf->any_syscall_count = 0; | |
12540 | VEC_free (int, inf->syscalls_counts); | |
12541 | } | |
12542 | ||
6149aea9 PA |
12543 | static void |
12544 | save_command (char *arg, int from_tty) | |
12545 | { | |
3e43a32a MS |
12546 | printf_unfiltered (_("\"save\" must be followed by " |
12547 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
12548 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
12549 | } | |
12550 | ||
84f4c1fe PM |
12551 | struct breakpoint * |
12552 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
12553 | void *data) | |
12554 | { | |
35df4500 | 12555 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 12556 | |
35df4500 | 12557 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
12558 | { |
12559 | if ((*callback) (b, data)) | |
12560 | return b; | |
12561 | } | |
12562 | ||
12563 | return NULL; | |
12564 | } | |
12565 | ||
c906108c | 12566 | void |
fba45db2 | 12567 | _initialize_breakpoint (void) |
c906108c SS |
12568 | { |
12569 | struct cmd_list_element *c; | |
12570 | ||
84acb35a | 12571 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 12572 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 12573 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 12574 | |
17450429 PP |
12575 | breakpoint_objfile_key = register_objfile_data (); |
12576 | ||
c906108c SS |
12577 | breakpoint_chain = 0; |
12578 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
12579 | before a breakpoint is set. */ | |
12580 | breakpoint_count = 0; | |
12581 | ||
1042e4c0 SS |
12582 | tracepoint_count = 0; |
12583 | ||
1bedd215 AC |
12584 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
12585 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
12586 | Usage is `ignore N COUNT'.")); | |
c906108c | 12587 | if (xdb_commands) |
c5aa993b | 12588 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 12589 | |
1bedd215 AC |
12590 | add_com ("commands", class_breakpoint, commands_command, _("\ |
12591 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
12592 | Give breakpoint number as argument after \"commands\".\n\ |
12593 | With no argument, the targeted breakpoint is the last one set.\n\ | |
12594 | The commands themselves follow starting on the next line.\n\ | |
12595 | Type a line containing \"end\" to indicate the end of them.\n\ | |
12596 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 12597 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 12598 | |
1bedd215 AC |
12599 | add_com ("condition", class_breakpoint, condition_command, _("\ |
12600 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 12601 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 12602 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 12603 | |
1bedd215 | 12604 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 12605 | Set a temporary breakpoint.\n\ |
c906108c SS |
12606 | Like \"break\" except the breakpoint is only temporary,\n\ |
12607 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
12608 | by using \"enable delete\" on the breakpoint number.\n\ |
12609 | \n" | |
12610 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 12611 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12612 | |
1bedd215 | 12613 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 12614 | Set a hardware assisted breakpoint.\n\ |
c906108c | 12615 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
12616 | some target hardware may not have this support.\n\ |
12617 | \n" | |
12618 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 12619 | set_cmd_completer (c, location_completer); |
c906108c | 12620 | |
1bedd215 | 12621 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 12622 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 12623 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
12624 | so it will be deleted when hit.\n\ |
12625 | \n" | |
12626 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 12627 | set_cmd_completer (c, location_completer); |
c906108c | 12628 | |
1bedd215 AC |
12629 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
12630 | Enable some breakpoints.\n\ | |
c906108c SS |
12631 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12632 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12633 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12634 | With a subcommand you can enable temporarily."), |
c906108c SS |
12635 | &enablelist, "enable ", 1, &cmdlist); |
12636 | if (xdb_commands) | |
1bedd215 AC |
12637 | add_com ("ab", class_breakpoint, enable_command, _("\ |
12638 | Enable some breakpoints.\n\ | |
c906108c SS |
12639 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12640 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12641 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12642 | With a subcommand you can enable temporarily.")); |
c906108c SS |
12643 | |
12644 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
12645 | ||
84951ab5 | 12646 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 12647 | Enable some breakpoints.\n\ |
c906108c SS |
12648 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12649 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12650 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 12651 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 12652 | |
1a966eab AC |
12653 | add_cmd ("once", no_class, enable_once_command, _("\ |
12654 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12655 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12656 | &enablebreaklist); |
12657 | ||
1a966eab AC |
12658 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12659 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12660 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12661 | &enablebreaklist); |
12662 | ||
1a966eab AC |
12663 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12664 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12665 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12666 | &enablelist); |
12667 | ||
1a966eab AC |
12668 | add_cmd ("once", no_class, enable_once_command, _("\ |
12669 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12670 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12671 | &enablelist); |
12672 | ||
1bedd215 AC |
12673 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
12674 | Disable some breakpoints.\n\ | |
c906108c SS |
12675 | Arguments are breakpoint numbers with spaces in between.\n\ |
12676 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12677 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
12678 | &disablelist, "disable ", 1, &cmdlist); |
12679 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
12680 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
12681 | if (xdb_commands) | |
1bedd215 AC |
12682 | add_com ("sb", class_breakpoint, disable_command, _("\ |
12683 | Disable some breakpoints.\n\ | |
c906108c SS |
12684 | Arguments are breakpoint numbers with spaces in between.\n\ |
12685 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12686 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 12687 | |
1a966eab AC |
12688 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
12689 | Disable some breakpoints.\n\ | |
c906108c SS |
12690 | Arguments are breakpoint numbers with spaces in between.\n\ |
12691 | To disable all breakpoints, give no argument.\n\ | |
12692 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 12693 | This command may be abbreviated \"disable\"."), |
c906108c SS |
12694 | &disablelist); |
12695 | ||
1bedd215 AC |
12696 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
12697 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12698 | Arguments are breakpoint numbers with spaces in between.\n\ |
12699 | To delete all breakpoints, give no argument.\n\ | |
12700 | \n\ | |
12701 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 12702 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
12703 | &deletelist, "delete ", 1, &cmdlist); |
12704 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 12705 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 12706 | if (xdb_commands) |
1bedd215 AC |
12707 | add_com ("db", class_breakpoint, delete_command, _("\ |
12708 | Delete some breakpoints.\n\ | |
c906108c | 12709 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 12710 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12711 | |
1a966eab AC |
12712 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12713 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12714 | Arguments are breakpoint numbers with spaces in between.\n\ |
12715 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12716 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12717 | &deletelist); |
12718 | ||
1bedd215 AC |
12719 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12720 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12721 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12722 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12723 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12724 | If an address is specified, breakpoints at that address are cleared.\n\ |
12725 | \n\ | |
12726 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12727 | is executing in.\n\ |
12728 | \n\ | |
1bedd215 | 12729 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12730 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12731 | |
1bedd215 | 12732 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12733 | Set breakpoint at specified line or function.\n" |
12734 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12735 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12736 | |
c906108c SS |
12737 | add_com_alias ("b", "break", class_run, 1); |
12738 | add_com_alias ("br", "break", class_run, 1); | |
12739 | add_com_alias ("bre", "break", class_run, 1); | |
12740 | add_com_alias ("brea", "break", class_run, 1); | |
12741 | ||
7681d515 PM |
12742 | if (xdb_commands) |
12743 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12744 | |
12745 | if (dbx_commands) | |
12746 | { | |
1bedd215 AC |
12747 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12748 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12749 | &stoplist, "stop ", 1, &cmdlist); |
12750 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12751 | _("Break in function or address."), &stoplist); |
c5aa993b | 12752 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12753 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12754 | add_com ("status", class_info, breakpoints_info, _("\ |
12755 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12756 | The \"Type\" column indicates one of:\n\ |
12757 | \tbreakpoint - normal breakpoint\n\ | |
12758 | \twatchpoint - watchpoint\n\ | |
12759 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12760 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12761 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12762 | address and file/line number respectively.\n\ |
12763 | \n\ | |
12764 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12765 | are set to the address of the last breakpoint listed unless the command\n\ |
12766 | is prefixed with \"server \".\n\n\ | |
c906108c | 12767 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12768 | breakpoint set.")); |
c906108c SS |
12769 | } |
12770 | ||
1bedd215 | 12771 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 12772 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
12773 | The \"Type\" column indicates one of:\n\ |
12774 | \tbreakpoint - normal breakpoint\n\ | |
12775 | \twatchpoint - watchpoint\n\ | |
12776 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12777 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12778 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12779 | address and file/line number respectively.\n\ |
12780 | \n\ | |
12781 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12782 | are set to the address of the last breakpoint listed unless the command\n\ |
12783 | is prefixed with \"server \".\n\n\ | |
c906108c | 12784 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12785 | breakpoint set.")); |
c906108c | 12786 | |
6b04bdb7 MS |
12787 | add_info_alias ("b", "breakpoints", 1); |
12788 | ||
c906108c | 12789 | if (xdb_commands) |
1bedd215 AC |
12790 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12791 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12792 | The \"Type\" column indicates one of:\n\ |
12793 | \tbreakpoint - normal breakpoint\n\ | |
12794 | \twatchpoint - watchpoint\n\ | |
12795 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12796 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12797 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12798 | address and file/line number respectively.\n\ |
12799 | \n\ | |
12800 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12801 | are set to the address of the last breakpoint listed unless the command\n\ |
12802 | is prefixed with \"server \".\n\n\ | |
c906108c | 12803 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12804 | breakpoint set.")); |
c906108c | 12805 | |
1a966eab AC |
12806 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12807 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12808 | The \"Type\" column indicates one of:\n\ |
12809 | \tbreakpoint - normal breakpoint\n\ | |
12810 | \twatchpoint - watchpoint\n\ | |
12811 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12812 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12813 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12814 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12815 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12816 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12817 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12818 | address and file/line number respectively.\n\ |
12819 | \n\ | |
12820 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12821 | are set to the address of the last breakpoint listed unless the command\n\ |
12822 | is prefixed with \"server \".\n\n\ | |
c906108c | 12823 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12824 | breakpoint set."), |
c906108c SS |
12825 | &maintenanceinfolist); |
12826 | ||
44feb3ce TT |
12827 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12828 | Set catchpoints to catch events."), | |
12829 | &catch_cmdlist, "catch ", | |
12830 | 0/*allow-unknown*/, &cmdlist); | |
12831 | ||
12832 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12833 | Set temporary catchpoints to catch events."), | |
12834 | &tcatch_cmdlist, "tcatch ", | |
12835 | 0/*allow-unknown*/, &cmdlist); | |
12836 | ||
12837 | /* Add catch and tcatch sub-commands. */ | |
12838 | add_catch_command ("catch", _("\ | |
12839 | Catch an exception, when caught.\n\ | |
12840 | With an argument, catch only exceptions with the given name."), | |
12841 | catch_catch_command, | |
a96d9b2e | 12842 | NULL, |
44feb3ce TT |
12843 | CATCH_PERMANENT, |
12844 | CATCH_TEMPORARY); | |
12845 | add_catch_command ("throw", _("\ | |
12846 | Catch an exception, when thrown.\n\ | |
12847 | With an argument, catch only exceptions with the given name."), | |
12848 | catch_throw_command, | |
a96d9b2e | 12849 | NULL, |
44feb3ce TT |
12850 | CATCH_PERMANENT, |
12851 | CATCH_TEMPORARY); | |
12852 | add_catch_command ("fork", _("Catch calls to fork."), | |
12853 | catch_fork_command_1, | |
a96d9b2e | 12854 | NULL, |
44feb3ce TT |
12855 | (void *) (uintptr_t) catch_fork_permanent, |
12856 | (void *) (uintptr_t) catch_fork_temporary); | |
12857 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12858 | catch_fork_command_1, | |
a96d9b2e | 12859 | NULL, |
44feb3ce TT |
12860 | (void *) (uintptr_t) catch_vfork_permanent, |
12861 | (void *) (uintptr_t) catch_vfork_temporary); | |
12862 | add_catch_command ("exec", _("Catch calls to exec."), | |
12863 | catch_exec_command_1, | |
a96d9b2e SDJ |
12864 | NULL, |
12865 | CATCH_PERMANENT, | |
12866 | CATCH_TEMPORARY); | |
12867 | add_catch_command ("syscall", _("\ | |
12868 | Catch system calls by their names and/or numbers.\n\ | |
12869 | Arguments say which system calls to catch. If no arguments\n\ | |
12870 | are given, every system call will be caught.\n\ | |
12871 | Arguments, if given, should be one or more system call names\n\ | |
12872 | (if your system supports that), or system call numbers."), | |
12873 | catch_syscall_command_1, | |
12874 | catch_syscall_completer, | |
44feb3ce TT |
12875 | CATCH_PERMANENT, |
12876 | CATCH_TEMPORARY); | |
44feb3ce TT |
12877 | add_catch_command ("exception", _("\ |
12878 | Catch Ada exceptions, when raised.\n\ | |
12879 | With an argument, catch only exceptions with the given name."), | |
12880 | catch_ada_exception_command, | |
a96d9b2e | 12881 | NULL, |
44feb3ce TT |
12882 | CATCH_PERMANENT, |
12883 | CATCH_TEMPORARY); | |
12884 | add_catch_command ("assert", _("\ | |
12885 | Catch failed Ada assertions, when raised.\n\ | |
12886 | With an argument, catch only exceptions with the given name."), | |
12887 | catch_assert_command, | |
a96d9b2e | 12888 | NULL, |
44feb3ce TT |
12889 | CATCH_PERMANENT, |
12890 | CATCH_TEMPORARY); | |
c5aa993b | 12891 | |
1bedd215 AC |
12892 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12893 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12894 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12895 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12896 | an expression changes.\n\ |
12897 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12898 | the memory to which it refers.")); | |
65d12d83 | 12899 | set_cmd_completer (c, expression_completer); |
c906108c | 12900 | |
1bedd215 AC |
12901 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12902 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12903 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12904 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12905 | an expression is read.\n\ |
12906 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12907 | the memory to which it refers.")); | |
65d12d83 | 12908 | set_cmd_completer (c, expression_completer); |
c906108c | 12909 | |
1bedd215 AC |
12910 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12911 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12912 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12913 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12914 | an expression is either read or written.\n\ |
12915 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12916 | the memory to which it refers.")); | |
65d12d83 | 12917 | set_cmd_completer (c, expression_completer); |
c906108c | 12918 | |
d77f58be | 12919 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 12920 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 12921 | |
920d2a44 AC |
12922 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12923 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12924 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12925 | &can_use_hw_watchpoints, _("\ | |
12926 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12927 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12928 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12929 | such is available. (However, any hardware watchpoints that were\n\ | |
12930 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12931 | hardware.)"), |
12932 | NULL, | |
920d2a44 | 12933 | show_can_use_hw_watchpoints, |
85c07804 | 12934 | &setlist, &showlist); |
c906108c SS |
12935 | |
12936 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12937 | |
1042e4c0 SS |
12938 | /* Tracepoint manipulation commands. */ |
12939 | ||
12940 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12941 | Set a tracepoint at specified line or function.\n\ | |
12942 | \n" | |
12943 | BREAK_ARGS_HELP ("trace") "\n\ | |
12944 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12945 | set_cmd_completer (c, location_completer); | |
12946 | ||
12947 | add_com_alias ("tp", "trace", class_alias, 0); | |
12948 | add_com_alias ("tr", "trace", class_alias, 1); | |
12949 | add_com_alias ("tra", "trace", class_alias, 1); | |
12950 | add_com_alias ("trac", "trace", class_alias, 1); | |
12951 | ||
7a697b8d SS |
12952 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12953 | Set a fast tracepoint at specified line or function.\n\ | |
12954 | \n" | |
12955 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12956 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12957 | set_cmd_completer (c, location_completer); | |
12958 | ||
0fb4aa4b PA |
12959 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12960 | Set a static tracepoint at specified line, function or marker.\n\ | |
12961 | \n\ | |
12962 | strace [LOCATION] [if CONDITION]\n\ | |
12963 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12964 | or -m MARKER_ID.\n\ | |
12965 | If a line number is specified, probe the marker at start of code\n\ | |
12966 | for that line. If a function is specified, probe the marker at start\n\ | |
12967 | of code for that function. If an address is specified, probe the marker\n\ | |
12968 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12969 | with that name. With no LOCATION, uses current execution address of\n\ | |
12970 | the selected stack frame.\n\ | |
12971 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12972 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12973 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12974 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12975 | \n\ | |
12976 | CONDITION is a boolean expression.\n\ | |
12977 | \n\ | |
d41c0fc8 PA |
12978 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12979 | conditions are different.\n\ | |
0fb4aa4b PA |
12980 | \n\ |
12981 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12982 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12983 | set_cmd_completer (c, location_completer); | |
12984 | ||
1042e4c0 | 12985 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 12986 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
12987 | Convenience variable \"$tpnum\" contains the number of the\n\ |
12988 | last tracepoint set.")); | |
12989 | ||
12990 | add_info_alias ("tp", "tracepoints", 1); | |
12991 | ||
12992 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12993 | Delete specified tracepoints.\n\ | |
12994 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12995 | No argument means delete all tracepoints."), | |
12996 | &deletelist); | |
12997 | ||
12998 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12999 | Disable specified tracepoints.\n\ | |
13000 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13001 | No argument means disable all tracepoints."), | |
13002 | &disablelist); | |
13003 | deprecate_cmd (c, "disable"); | |
13004 | ||
13005 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
13006 | Enable specified tracepoints.\n\ | |
13007 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
13008 | No argument means enable all tracepoints."), | |
13009 | &enablelist); | |
13010 | deprecate_cmd (c, "enable"); | |
13011 | ||
13012 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
13013 | Set the passcount for a tracepoint.\n\ | |
13014 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
13015 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
13016 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
13017 | ||
6149aea9 PA |
13018 | add_prefix_cmd ("save", class_breakpoint, save_command, |
13019 | _("Save breakpoint definitions as a script."), | |
13020 | &save_cmdlist, "save ", | |
13021 | 0/*allow-unknown*/, &cmdlist); | |
13022 | ||
13023 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
13024 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 13025 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
13026 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
13027 | session to restore them."), | |
13028 | &save_cmdlist); | |
13029 | set_cmd_completer (c, filename_completer); | |
13030 | ||
13031 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 13032 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
13033 | Use the 'source' command in another debug session to restore them."), |
13034 | &save_cmdlist); | |
1042e4c0 SS |
13035 | set_cmd_completer (c, filename_completer); |
13036 | ||
6149aea9 PA |
13037 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
13038 | deprecate_cmd (c, "save tracepoints"); | |
13039 | ||
1bedd215 | 13040 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13041 | Breakpoint specific settings\n\ |
13042 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13043 | pending breakpoint behavior"), |
fa8d40ab JJ |
13044 | &breakpoint_set_cmdlist, "set breakpoint ", |
13045 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 13046 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
13047 | Breakpoint specific settings\n\ |
13048 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 13049 | pending breakpoint behavior"), |
fa8d40ab JJ |
13050 | &breakpoint_show_cmdlist, "show breakpoint ", |
13051 | 0/*allow-unknown*/, &showlist); | |
13052 | ||
7915a72c AC |
13053 | add_setshow_auto_boolean_cmd ("pending", no_class, |
13054 | &pending_break_support, _("\ | |
13055 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
13056 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
13057 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
13058 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
13059 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 13060 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 13061 | NULL, |
920d2a44 | 13062 | show_pending_break_support, |
6e1d7d6c AC |
13063 | &breakpoint_set_cmdlist, |
13064 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
13065 | |
13066 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
13067 | |
13068 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
13069 | &automatic_hardware_breakpoints, _("\ | |
13070 | Set automatic usage of hardware breakpoints."), _("\ | |
13071 | Show automatic usage of hardware breakpoints."), _("\ | |
13072 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
13073 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
13074 | a warning will be emitted for such breakpoints."), | |
13075 | NULL, | |
13076 | show_automatic_hardware_breakpoints, | |
13077 | &breakpoint_set_cmdlist, | |
13078 | &breakpoint_show_cmdlist); | |
74960c60 | 13079 | |
33e5cbd6 PA |
13080 | add_setshow_enum_cmd ("always-inserted", class_support, |
13081 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
13082 | Set mode for inserting breakpoints."), _("\ |
13083 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
13084 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
13085 | resumed, and removed when execution stops. When this mode is on,\n\ | |
13086 | breakpoints are inserted immediately and removed only when the user\n\ | |
13087 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
13088 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
13089 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
13090 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
13091 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
13092 | NULL, |
13093 | &show_always_inserted_mode, | |
13094 | &breakpoint_set_cmdlist, | |
13095 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
13096 | |
13097 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
13098 | Set a breakpoint for an address range.\n\ | |
13099 | break-range START-LOCATION, END-LOCATION\n\ | |
13100 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
13101 | LINENUM, for that line in the current file,\n\ | |
13102 | FILE:LINENUM, for that line in that file,\n\ | |
13103 | +OFFSET, for that number of lines after the current line\n\ | |
13104 | or the start of the range\n\ | |
13105 | FUNCTION, for the first line in that function,\n\ | |
13106 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
13107 | *ADDRESS, for the instruction at that address.\n\ | |
13108 | \n\ | |
13109 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
13110 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
13111 | range (including START-LOCATION and END-LOCATION).")); | |
13112 | ||
765dc015 | 13113 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
13114 | |
13115 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 13116 | } |