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 | ||
a14ed312 | 134 | static void breakpoints_info (char *, int); |
c906108c | 135 | |
d77f58be SS |
136 | static void watchpoints_info (char *, int); |
137 | ||
e5a67952 MS |
138 | static int breakpoint_1 (char *, int, |
139 | int (*) (const struct breakpoint *)); | |
c906108c | 140 | |
4efb68b1 | 141 | static int breakpoint_cond_eval (void *); |
c906108c | 142 | |
4efb68b1 | 143 | static void cleanup_executing_breakpoints (void *); |
c906108c | 144 | |
a14ed312 | 145 | static void commands_command (char *, int); |
c906108c | 146 | |
a14ed312 | 147 | static void condition_command (char *, int); |
c906108c | 148 | |
c5aa993b JM |
149 | typedef enum |
150 | { | |
151 | mark_inserted, | |
152 | mark_uninserted | |
153 | } | |
154 | insertion_state_t; | |
c906108c | 155 | |
0bde7532 | 156 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 157 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 158 | |
a14ed312 | 159 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
160 | |
161 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 162 | |
4efb68b1 | 163 | static int watchpoint_check (void *); |
c906108c | 164 | |
a14ed312 | 165 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_breakpoint_used_count (void); |
c906108c | 168 | |
a14ed312 | 169 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 170 | |
a14ed312 | 171 | static void hbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void thbreak_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 176 | |
a14ed312 | 177 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 184 | |
d85310f7 MS |
185 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
186 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 187 | |
a14ed312 | 188 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 189 | |
d03285ec UW |
190 | static void detach_single_step_breakpoints (void); |
191 | ||
6c95b8df PA |
192 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
193 | CORE_ADDR pc); | |
1aafd4da | 194 | |
fe3f5fa8 | 195 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
196 | static void incref_bp_location (struct bp_location *loc); |
197 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 198 | |
39d61571 | 199 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 200 | |
b60e7edf | 201 | static void update_global_location_list (int); |
a5606eee | 202 | |
b60e7edf | 203 | static void update_global_location_list_nothrow (int); |
74960c60 | 204 | |
d77f58be | 205 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 | 206 | |
d77f58be | 207 | static int is_watchpoint (const struct breakpoint *bpt); |
60e1c644 | 208 | |
74960c60 | 209 | static void insert_breakpoint_locations (void); |
a5606eee | 210 | |
a96d9b2e SDJ |
211 | static int syscall_catchpoint_p (struct breakpoint *b); |
212 | ||
1042e4c0 SS |
213 | static void tracepoints_info (char *, int); |
214 | ||
215 | static void delete_trace_command (char *, int); | |
216 | ||
217 | static void enable_trace_command (char *, int); | |
218 | ||
219 | static void disable_trace_command (char *, int); | |
220 | ||
221 | static void trace_pass_command (char *, int); | |
222 | ||
0fb4aa4b PA |
223 | /* Assuming we're creating a static tracepoint, does S look like a |
224 | static tracepoint marker spec ("-m MARKER_ID")? */ | |
225 | #define is_marker_spec(s) \ | |
f5a8e22b | 226 | (s != NULL && strncmp (s, "-m", 2) == 0 && ((s)[2] == ' ' || (s)[2] == '\t')) |
0fb4aa4b | 227 | |
5cea2a26 PA |
228 | /* A reference-counted struct command_line. This lets multiple |
229 | breakpoints share a single command list. */ | |
230 | struct counted_command_line | |
231 | { | |
232 | /* The reference count. */ | |
233 | int refc; | |
234 | ||
235 | /* The command list. */ | |
236 | struct command_line *commands; | |
237 | }; | |
238 | ||
239 | struct command_line * | |
240 | breakpoint_commands (struct breakpoint *b) | |
241 | { | |
242 | return b->commands ? b->commands->commands : NULL; | |
243 | } | |
3daf8fe5 | 244 | |
f3b1572e PA |
245 | /* Flag indicating that a command has proceeded the inferior past the |
246 | current breakpoint. */ | |
247 | ||
248 | static int breakpoint_proceeded; | |
249 | ||
2cec12e5 AR |
250 | static const char * |
251 | bpdisp_text (enum bpdisp disp) | |
252 | { | |
4a64f543 MS |
253 | /* NOTE: the following values are a part of MI protocol and |
254 | represent values of 'disp' field returned when inferior stops at | |
255 | a breakpoint. */ | |
bc043ef3 | 256 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 257 | |
2cec12e5 AR |
258 | return bpdisps[(int) disp]; |
259 | } | |
c906108c | 260 | |
4a64f543 | 261 | /* Prototypes for exported functions. */ |
c906108c | 262 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 263 | if such is available. */ |
c906108c SS |
264 | static int can_use_hw_watchpoints; |
265 | ||
920d2a44 AC |
266 | static void |
267 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
268 | struct cmd_list_element *c, | |
269 | const char *value) | |
270 | { | |
3e43a32a MS |
271 | fprintf_filtered (file, |
272 | _("Debugger's willingness to use " | |
273 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
274 | value); |
275 | } | |
276 | ||
fa8d40ab JJ |
277 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
278 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 279 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
280 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
281 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
282 | static void |
283 | show_pending_break_support (struct ui_file *file, int from_tty, | |
284 | struct cmd_list_element *c, | |
285 | const char *value) | |
286 | { | |
3e43a32a MS |
287 | fprintf_filtered (file, |
288 | _("Debugger's behavior regarding " | |
289 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
290 | value); |
291 | } | |
fa8d40ab | 292 | |
765dc015 | 293 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 294 | set with "break" but falling in read-only memory. |
765dc015 VP |
295 | If 0, gdb will warn about such breakpoints, but won't automatically |
296 | use hardware breakpoints. */ | |
297 | static int automatic_hardware_breakpoints; | |
298 | static void | |
299 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
300 | struct cmd_list_element *c, | |
301 | const char *value) | |
302 | { | |
3e43a32a MS |
303 | fprintf_filtered (file, |
304 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
305 | value); |
306 | } | |
307 | ||
33e5cbd6 PA |
308 | /* If on, gdb will keep breakpoints inserted even as inferior is |
309 | stopped, and immediately insert any new breakpoints. If off, gdb | |
310 | will insert breakpoints into inferior only when resuming it, and | |
311 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
312 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
313 | ||
314 | static const char always_inserted_auto[] = "auto"; | |
315 | static const char always_inserted_on[] = "on"; | |
316 | static const char always_inserted_off[] = "off"; | |
317 | static const char *always_inserted_enums[] = { | |
318 | always_inserted_auto, | |
319 | always_inserted_off, | |
320 | always_inserted_on, | |
321 | NULL | |
322 | }; | |
323 | static const char *always_inserted_mode = always_inserted_auto; | |
324 | static void | |
74960c60 | 325 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 326 | struct cmd_list_element *c, const char *value) |
74960c60 | 327 | { |
33e5cbd6 | 328 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
329 | fprintf_filtered (file, |
330 | _("Always inserted breakpoint " | |
331 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
332 | value, |
333 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
334 | else | |
3e43a32a MS |
335 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
336 | value); | |
74960c60 VP |
337 | } |
338 | ||
33e5cbd6 PA |
339 | int |
340 | breakpoints_always_inserted_mode (void) | |
341 | { | |
342 | return (always_inserted_mode == always_inserted_on | |
343 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
344 | } | |
765dc015 | 345 | |
a14ed312 | 346 | void _initialize_breakpoint (void); |
c906108c | 347 | |
c906108c SS |
348 | /* Are we executing breakpoint commands? */ |
349 | static int executing_breakpoint_commands; | |
350 | ||
c02f5703 MS |
351 | /* Are overlay event breakpoints enabled? */ |
352 | static int overlay_events_enabled; | |
353 | ||
e09342b5 TJB |
354 | /* See description in breakpoint.h. */ |
355 | int target_exact_watchpoints = 0; | |
356 | ||
c906108c | 357 | /* Walk the following statement or block through all breakpoints. |
4a64f543 MS |
358 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the |
359 | current breakpoint. */ | |
c906108c | 360 | |
5c44784c | 361 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 362 | |
5c44784c JM |
363 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
364 | for (B = breakpoint_chain; \ | |
365 | B ? (TMP=B->next, 1): 0; \ | |
366 | B = TMP) | |
c906108c | 367 | |
4a64f543 MS |
368 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
369 | not provided so update_global_location_list must not be called | |
370 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 371 | |
876fa593 JK |
372 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
373 | for (BP_TMP = bp_location; \ | |
374 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
375 | BP_TMP++) | |
7cc221ef | 376 | |
1042e4c0 SS |
377 | /* Iterator for tracepoints only. */ |
378 | ||
379 | #define ALL_TRACEPOINTS(B) \ | |
380 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 381 | if (is_tracepoint (B)) |
1042e4c0 | 382 | |
7cc221ef | 383 | /* Chains of all breakpoints defined. */ |
c906108c SS |
384 | |
385 | struct breakpoint *breakpoint_chain; | |
386 | ||
876fa593 JK |
387 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
388 | ||
389 | static struct bp_location **bp_location; | |
390 | ||
391 | /* Number of elements of BP_LOCATION. */ | |
392 | ||
393 | static unsigned bp_location_count; | |
394 | ||
4a64f543 MS |
395 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
396 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
397 | result from bp_location_has_shadow. You can use it for roughly | |
398 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
399 | an address you need to read. */ | |
876fa593 JK |
400 | |
401 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
402 | ||
4a64f543 MS |
403 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
404 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
405 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
406 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
407 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
408 | |
409 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 410 | |
4a64f543 MS |
411 | /* The locations that no longer correspond to any breakpoint, unlinked |
412 | from bp_location array, but for which a hit may still be reported | |
413 | by a target. */ | |
20874c92 VP |
414 | VEC(bp_location_p) *moribund_locations = NULL; |
415 | ||
c906108c SS |
416 | /* Number of last breakpoint made. */ |
417 | ||
95a42b64 TT |
418 | static int breakpoint_count; |
419 | ||
86b17b60 PA |
420 | /* The value of `breakpoint_count' before the last command that |
421 | created breakpoints. If the last (break-like) command created more | |
422 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
423 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
424 | static int prev_breakpoint_count; | |
c906108c | 425 | |
1042e4c0 SS |
426 | /* Number of last tracepoint made. */ |
427 | ||
95a42b64 | 428 | static int tracepoint_count; |
1042e4c0 | 429 | |
6149aea9 PA |
430 | static struct cmd_list_element *breakpoint_set_cmdlist; |
431 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 432 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 433 | |
468d015d JJ |
434 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
435 | static int | |
436 | breakpoint_enabled (struct breakpoint *b) | |
437 | { | |
0d381245 | 438 | return (b->enable_state == bp_enabled); |
468d015d JJ |
439 | } |
440 | ||
c906108c SS |
441 | /* Set breakpoint count to NUM. */ |
442 | ||
95a42b64 | 443 | static void |
fba45db2 | 444 | set_breakpoint_count (int num) |
c906108c | 445 | { |
86b17b60 | 446 | prev_breakpoint_count = breakpoint_count; |
c906108c | 447 | breakpoint_count = num; |
4fa62494 | 448 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
449 | } |
450 | ||
86b17b60 PA |
451 | /* Used by `start_rbreak_breakpoints' below, to record the current |
452 | breakpoint count before "rbreak" creates any breakpoint. */ | |
453 | static int rbreak_start_breakpoint_count; | |
454 | ||
95a42b64 TT |
455 | /* Called at the start an "rbreak" command to record the first |
456 | breakpoint made. */ | |
86b17b60 | 457 | |
95a42b64 TT |
458 | void |
459 | start_rbreak_breakpoints (void) | |
460 | { | |
86b17b60 | 461 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
462 | } |
463 | ||
464 | /* Called at the end of an "rbreak" command to record the last | |
465 | breakpoint made. */ | |
86b17b60 | 466 | |
95a42b64 TT |
467 | void |
468 | end_rbreak_breakpoints (void) | |
469 | { | |
86b17b60 | 470 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
471 | } |
472 | ||
4a64f543 | 473 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
474 | |
475 | void | |
fba45db2 | 476 | clear_breakpoint_hit_counts (void) |
c906108c SS |
477 | { |
478 | struct breakpoint *b; | |
479 | ||
480 | ALL_BREAKPOINTS (b) | |
481 | b->hit_count = 0; | |
482 | } | |
483 | ||
9add0f1b TT |
484 | /* Allocate a new counted_command_line with reference count of 1. |
485 | The new structure owns COMMANDS. */ | |
486 | ||
487 | static struct counted_command_line * | |
488 | alloc_counted_command_line (struct command_line *commands) | |
489 | { | |
490 | struct counted_command_line *result | |
491 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 492 | |
9add0f1b TT |
493 | result->refc = 1; |
494 | result->commands = commands; | |
495 | return result; | |
496 | } | |
497 | ||
498 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
499 | ||
500 | static void | |
501 | incref_counted_command_line (struct counted_command_line *cmd) | |
502 | { | |
503 | if (cmd) | |
504 | ++cmd->refc; | |
505 | } | |
506 | ||
507 | /* Decrement reference count. If the reference count reaches 0, | |
508 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
509 | nothing if *CMDP is NULL. */ | |
510 | ||
511 | static void | |
512 | decref_counted_command_line (struct counted_command_line **cmdp) | |
513 | { | |
514 | if (*cmdp) | |
515 | { | |
516 | if (--(*cmdp)->refc == 0) | |
517 | { | |
518 | free_command_lines (&(*cmdp)->commands); | |
519 | xfree (*cmdp); | |
520 | } | |
521 | *cmdp = NULL; | |
522 | } | |
523 | } | |
524 | ||
525 | /* A cleanup function that calls decref_counted_command_line. */ | |
526 | ||
527 | static void | |
528 | do_cleanup_counted_command_line (void *arg) | |
529 | { | |
530 | decref_counted_command_line (arg); | |
531 | } | |
532 | ||
533 | /* Create a cleanup that calls decref_counted_command_line on the | |
534 | argument. */ | |
535 | ||
536 | static struct cleanup * | |
537 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
538 | { | |
539 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
540 | } | |
541 | ||
c906108c SS |
542 | /* Default address, symtab and line to put a breakpoint at |
543 | for "break" command with no arg. | |
4a64f543 | 544 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
545 | not valid, and "break" with no arg is an error. |
546 | ||
547 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
548 | ||
549 | int default_breakpoint_valid; | |
550 | CORE_ADDR default_breakpoint_address; | |
551 | struct symtab *default_breakpoint_symtab; | |
552 | int default_breakpoint_line; | |
6c95b8df PA |
553 | struct program_space *default_breakpoint_pspace; |
554 | ||
c906108c | 555 | \f |
48cb2d85 VP |
556 | /* Return the breakpoint with the specified number, or NULL |
557 | if the number does not refer to an existing breakpoint. */ | |
558 | ||
559 | struct breakpoint * | |
560 | get_breakpoint (int num) | |
561 | { | |
562 | struct breakpoint *b; | |
563 | ||
564 | ALL_BREAKPOINTS (b) | |
565 | if (b->number == num) | |
566 | return b; | |
567 | ||
568 | return NULL; | |
569 | } | |
5c44784c | 570 | |
c906108c | 571 | \f |
adc36818 PM |
572 | |
573 | void | |
574 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
575 | int from_tty) | |
576 | { | |
577 | struct bp_location *loc = b->loc; | |
578 | ||
579 | for (; loc; loc = loc->next) | |
580 | { | |
581 | xfree (loc->cond); | |
582 | loc->cond = NULL; | |
583 | } | |
584 | xfree (b->cond_string); | |
585 | b->cond_string = NULL; | |
586 | xfree (b->cond_exp); | |
587 | b->cond_exp = NULL; | |
588 | ||
589 | if (*exp == 0) | |
590 | { | |
591 | if (from_tty) | |
592 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
593 | } | |
594 | else | |
595 | { | |
596 | char *arg = exp; | |
cc59ec59 | 597 | |
adc36818 PM |
598 | /* I don't know if it matters whether this is the string the user |
599 | typed in or the decompiled expression. */ | |
600 | b->cond_string = xstrdup (arg); | |
601 | b->condition_not_parsed = 0; | |
602 | ||
603 | if (is_watchpoint (b)) | |
604 | { | |
605 | innermost_block = NULL; | |
606 | arg = exp; | |
607 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
608 | if (*arg) | |
609 | error (_("Junk at end of expression")); | |
610 | b->cond_exp_valid_block = innermost_block; | |
611 | } | |
612 | else | |
613 | { | |
614 | for (loc = b->loc; loc; loc = loc->next) | |
615 | { | |
616 | arg = exp; | |
617 | loc->cond = | |
618 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
619 | if (*arg) | |
620 | error (_("Junk at end of expression")); | |
621 | } | |
622 | } | |
623 | } | |
624 | breakpoints_changed (); | |
625 | observer_notify_breakpoint_modified (b->number); | |
626 | } | |
627 | ||
c906108c SS |
628 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
629 | ||
630 | static void | |
fba45db2 | 631 | condition_command (char *arg, int from_tty) |
c906108c | 632 | { |
52f0bd74 | 633 | struct breakpoint *b; |
c906108c | 634 | char *p; |
52f0bd74 | 635 | int bnum; |
c906108c SS |
636 | |
637 | if (arg == 0) | |
e2e0b3e5 | 638 | error_no_arg (_("breakpoint number")); |
c906108c SS |
639 | |
640 | p = arg; | |
641 | bnum = get_number (&p); | |
5c44784c | 642 | if (bnum == 0) |
8a3fe4f8 | 643 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
644 | |
645 | ALL_BREAKPOINTS (b) | |
646 | if (b->number == bnum) | |
2f069f6f | 647 | { |
7371cf6d PM |
648 | /* Check if this breakpoint has a Python object assigned to |
649 | it, and if it has a definition of the "stop" | |
650 | method. This method and conditions entered into GDB from | |
651 | the CLI are mutually exclusive. */ | |
652 | if (b->py_bp_object | |
653 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
654 | error (_("Cannot set a condition where a Python 'stop' " | |
655 | "method has been defined in the breakpoint.")); | |
2566ad2d | 656 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
657 | return; |
658 | } | |
c906108c | 659 | |
8a3fe4f8 | 660 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
661 | } |
662 | ||
a7bdde9e VP |
663 | /* Check that COMMAND do not contain commands that are suitable |
664 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
665 | Throw if any such commands is found. */ |
666 | ||
a7bdde9e VP |
667 | static void |
668 | check_no_tracepoint_commands (struct command_line *commands) | |
669 | { | |
670 | struct command_line *c; | |
cc59ec59 | 671 | |
a7bdde9e VP |
672 | for (c = commands; c; c = c->next) |
673 | { | |
674 | int i; | |
675 | ||
676 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
677 | error (_("The 'while-stepping' command can " |
678 | "only be used for tracepoints")); | |
a7bdde9e VP |
679 | |
680 | for (i = 0; i < c->body_count; ++i) | |
681 | check_no_tracepoint_commands ((c->body_list)[i]); | |
682 | ||
683 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 684 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
685 | command directly. */ |
686 | if (strstr (c->line, "collect ") == c->line) | |
687 | error (_("The 'collect' command can only be used for tracepoints")); | |
688 | ||
51661e93 VP |
689 | if (strstr (c->line, "teval ") == c->line) |
690 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
691 | } |
692 | } | |
693 | ||
d77f58be SS |
694 | /* Encapsulate tests for different types of tracepoints. */ |
695 | ||
a7bdde9e | 696 | int |
d77f58be | 697 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 698 | { |
0fb4aa4b PA |
699 | return (b->type == bp_tracepoint |
700 | || b->type == bp_fast_tracepoint | |
701 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 702 | } |
d77f58be | 703 | |
95a42b64 TT |
704 | /* A helper function that validsates that COMMANDS are valid for a |
705 | breakpoint. This function will throw an exception if a problem is | |
706 | found. */ | |
48cb2d85 | 707 | |
95a42b64 TT |
708 | static void |
709 | validate_commands_for_breakpoint (struct breakpoint *b, | |
710 | struct command_line *commands) | |
48cb2d85 | 711 | { |
d77f58be | 712 | if (is_tracepoint (b)) |
a7bdde9e | 713 | { |
4a64f543 MS |
714 | /* We need to verify that each top-level element of commands is |
715 | valid for tracepoints, that there's at most one | |
716 | while-stepping element, and that while-stepping's body has | |
717 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
718 | struct command_line *c; |
719 | struct command_line *while_stepping = 0; | |
720 | for (c = commands; c; c = c->next) | |
721 | { | |
a7bdde9e VP |
722 | if (c->control_type == while_stepping_control) |
723 | { | |
724 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
725 | error (_("The 'while-stepping' command " |
726 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 727 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
728 | error (_("The 'while-stepping' command " |
729 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
730 | |
731 | if (while_stepping) | |
3e43a32a MS |
732 | error (_("The 'while-stepping' command " |
733 | "can be used only once")); | |
a7bdde9e VP |
734 | else |
735 | while_stepping = c; | |
736 | } | |
737 | } | |
738 | if (while_stepping) | |
739 | { | |
740 | struct command_line *c2; | |
741 | ||
742 | gdb_assert (while_stepping->body_count == 1); | |
743 | c2 = while_stepping->body_list[0]; | |
744 | for (; c2; c2 = c2->next) | |
745 | { | |
a7bdde9e VP |
746 | if (c2->control_type == while_stepping_control) |
747 | error (_("The 'while-stepping' command cannot be nested")); | |
748 | } | |
749 | } | |
750 | } | |
751 | else | |
752 | { | |
753 | check_no_tracepoint_commands (commands); | |
754 | } | |
95a42b64 TT |
755 | } |
756 | ||
0fb4aa4b PA |
757 | /* Return a vector of all the static tracepoints set at ADDR. The |
758 | caller is responsible for releasing the vector. */ | |
759 | ||
760 | VEC(breakpoint_p) * | |
761 | static_tracepoints_here (CORE_ADDR addr) | |
762 | { | |
763 | struct breakpoint *b; | |
764 | VEC(breakpoint_p) *found = 0; | |
765 | struct bp_location *loc; | |
766 | ||
767 | ALL_BREAKPOINTS (b) | |
768 | if (b->type == bp_static_tracepoint) | |
769 | { | |
770 | for (loc = b->loc; loc; loc = loc->next) | |
771 | if (loc->address == addr) | |
772 | VEC_safe_push(breakpoint_p, found, b); | |
773 | } | |
774 | ||
775 | return found; | |
776 | } | |
777 | ||
95a42b64 | 778 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 779 | validate that only allowed commands are included. */ |
95a42b64 TT |
780 | |
781 | void | |
4a64f543 MS |
782 | breakpoint_set_commands (struct breakpoint *b, |
783 | struct command_line *commands) | |
95a42b64 TT |
784 | { |
785 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 786 | |
9add0f1b TT |
787 | decref_counted_command_line (&b->commands); |
788 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
789 | breakpoints_changed (); |
790 | observer_notify_breakpoint_modified (b->number); | |
791 | } | |
792 | ||
45a43567 TT |
793 | /* Set the internal `silent' flag on the breakpoint. Note that this |
794 | is not the same as the "silent" that may appear in the breakpoint's | |
795 | commands. */ | |
796 | ||
797 | void | |
798 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
799 | { | |
800 | int old_silent = b->silent; | |
801 | ||
802 | b->silent = silent; | |
803 | if (old_silent != silent) | |
804 | observer_notify_breakpoint_modified (b->number); | |
805 | } | |
806 | ||
807 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
808 | breakpoint work for any thread. */ | |
809 | ||
810 | void | |
811 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
812 | { | |
813 | int old_thread = b->thread; | |
814 | ||
815 | b->thread = thread; | |
816 | if (old_thread != thread) | |
817 | observer_notify_breakpoint_modified (b->number); | |
818 | } | |
819 | ||
820 | /* Set the task for this breakpoint. If TASK is 0, make the | |
821 | breakpoint work for any task. */ | |
822 | ||
823 | void | |
824 | breakpoint_set_task (struct breakpoint *b, int task) | |
825 | { | |
826 | int old_task = b->task; | |
827 | ||
828 | b->task = task; | |
829 | if (old_task != task) | |
830 | observer_notify_breakpoint_modified (b->number); | |
831 | } | |
832 | ||
95a42b64 TT |
833 | void |
834 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
835 | { |
836 | struct breakpoint *b = closure; | |
cc59ec59 | 837 | |
a7bdde9e VP |
838 | validate_actionline (&line, b); |
839 | } | |
840 | ||
95a42b64 TT |
841 | /* A structure used to pass information through |
842 | map_breakpoint_numbers. */ | |
843 | ||
844 | struct commands_info | |
845 | { | |
846 | /* True if the command was typed at a tty. */ | |
847 | int from_tty; | |
86b17b60 PA |
848 | |
849 | /* The breakpoint range spec. */ | |
850 | char *arg; | |
851 | ||
95a42b64 TT |
852 | /* Non-NULL if the body of the commands are being read from this |
853 | already-parsed command. */ | |
854 | struct command_line *control; | |
86b17b60 | 855 | |
95a42b64 TT |
856 | /* The command lines read from the user, or NULL if they have not |
857 | yet been read. */ | |
858 | struct counted_command_line *cmd; | |
859 | }; | |
860 | ||
861 | /* A callback for map_breakpoint_numbers that sets the commands for | |
862 | commands_command. */ | |
863 | ||
c906108c | 864 | static void |
95a42b64 | 865 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 866 | { |
95a42b64 | 867 | struct commands_info *info = data; |
c906108c | 868 | |
95a42b64 TT |
869 | if (info->cmd == NULL) |
870 | { | |
871 | struct command_line *l; | |
5c44784c | 872 | |
95a42b64 TT |
873 | if (info->control != NULL) |
874 | l = copy_command_lines (info->control->body_list[0]); | |
875 | else | |
86b17b60 PA |
876 | { |
877 | struct cleanup *old_chain; | |
878 | char *str; | |
c5aa993b | 879 | |
3e43a32a MS |
880 | str = xstrprintf (_("Type commands for breakpoint(s) " |
881 | "%s, one per line."), | |
86b17b60 PA |
882 | info->arg); |
883 | ||
884 | old_chain = make_cleanup (xfree, str); | |
885 | ||
886 | l = read_command_lines (str, | |
887 | info->from_tty, 1, | |
d77f58be | 888 | (is_tracepoint (b) |
86b17b60 PA |
889 | ? check_tracepoint_command : 0), |
890 | b); | |
891 | ||
892 | do_cleanups (old_chain); | |
893 | } | |
a7bdde9e | 894 | |
95a42b64 TT |
895 | info->cmd = alloc_counted_command_line (l); |
896 | } | |
897 | ||
898 | /* If a breakpoint was on the list more than once, we don't need to | |
899 | do anything. */ | |
900 | if (b->commands != info->cmd) | |
901 | { | |
902 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
903 | incref_counted_command_line (info->cmd); | |
904 | decref_counted_command_line (&b->commands); | |
905 | b->commands = info->cmd; | |
906 | breakpoints_changed (); | |
907 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 908 | } |
95a42b64 TT |
909 | } |
910 | ||
911 | static void | |
4a64f543 MS |
912 | commands_command_1 (char *arg, int from_tty, |
913 | struct command_line *control) | |
95a42b64 TT |
914 | { |
915 | struct cleanup *cleanups; | |
916 | struct commands_info info; | |
917 | ||
918 | info.from_tty = from_tty; | |
919 | info.control = control; | |
920 | info.cmd = NULL; | |
921 | /* If we read command lines from the user, then `info' will hold an | |
922 | extra reference to the commands that we must clean up. */ | |
923 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
924 | ||
925 | if (arg == NULL || !*arg) | |
926 | { | |
86b17b60 | 927 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
928 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
929 | breakpoint_count); | |
95a42b64 TT |
930 | else if (breakpoint_count > 0) |
931 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
932 | else |
933 | { | |
934 | /* So that we don't try to free the incoming non-NULL | |
935 | argument in the cleanup below. Mapping breakpoint | |
936 | numbers will fail in this case. */ | |
937 | arg = NULL; | |
938 | } | |
95a42b64 | 939 | } |
9766ced4 SS |
940 | else |
941 | /* The command loop has some static state, so we need to preserve | |
942 | our argument. */ | |
943 | arg = xstrdup (arg); | |
86b17b60 PA |
944 | |
945 | if (arg != NULL) | |
946 | make_cleanup (xfree, arg); | |
947 | ||
948 | info.arg = arg; | |
95a42b64 TT |
949 | |
950 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
951 | ||
952 | if (info.cmd == NULL) | |
953 | error (_("No breakpoints specified.")); | |
954 | ||
955 | do_cleanups (cleanups); | |
956 | } | |
957 | ||
958 | static void | |
959 | commands_command (char *arg, int from_tty) | |
960 | { | |
961 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 962 | } |
40c03ae8 EZ |
963 | |
964 | /* Like commands_command, but instead of reading the commands from | |
965 | input stream, takes them from an already parsed command structure. | |
966 | ||
967 | This is used by cli-script.c to DTRT with breakpoint commands | |
968 | that are part of if and while bodies. */ | |
969 | enum command_control_type | |
970 | commands_from_control_command (char *arg, struct command_line *cmd) | |
971 | { | |
95a42b64 TT |
972 | commands_command_1 (arg, 0, cmd); |
973 | return simple_control; | |
40c03ae8 | 974 | } |
876fa593 JK |
975 | |
976 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
977 | ||
978 | static int | |
979 | bp_location_has_shadow (struct bp_location *bl) | |
980 | { | |
981 | if (bl->loc_type != bp_loc_software_breakpoint) | |
982 | return 0; | |
983 | if (!bl->inserted) | |
984 | return 0; | |
985 | if (bl->target_info.shadow_len == 0) | |
986 | /* bp isn't valid, or doesn't shadow memory. */ | |
987 | return 0; | |
988 | return 1; | |
989 | } | |
990 | ||
8defab1a | 991 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
992 | by replacing any memory breakpoints with their shadowed contents. |
993 | ||
994 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
995 | bl->address - bp_location_placed_address_before_address_max |
996 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
997 | The range we were requested to resolve shadows for is: |
998 | memaddr ... memaddr + len | |
999 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1000 | memaddr + len <= (bl->address |
1001 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1002 | and: |
35df4500 | 1003 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1004 | |
8defab1a DJ |
1005 | void |
1006 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1007 | { |
4a64f543 MS |
1008 | /* Left boundary, right boundary and median element of our binary |
1009 | search. */ | |
876fa593 JK |
1010 | unsigned bc_l, bc_r, bc; |
1011 | ||
4a64f543 MS |
1012 | /* Find BC_L which is a leftmost element which may affect BUF |
1013 | content. It is safe to report lower value but a failure to | |
1014 | report higher one. */ | |
876fa593 JK |
1015 | |
1016 | bc_l = 0; | |
1017 | bc_r = bp_location_count; | |
1018 | while (bc_l + 1 < bc_r) | |
1019 | { | |
35df4500 | 1020 | struct bp_location *bl; |
876fa593 JK |
1021 | |
1022 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1023 | bl = bp_location[bc]; |
876fa593 | 1024 | |
4a64f543 MS |
1025 | /* Check first BL->ADDRESS will not overflow due to the added |
1026 | constant. Then advance the left boundary only if we are sure | |
1027 | the BC element can in no way affect the BUF content (MEMADDR | |
1028 | to MEMADDR + LEN range). | |
876fa593 | 1029 | |
4a64f543 MS |
1030 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1031 | offset so that we cannot miss a breakpoint with its shadow | |
1032 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1033 | |
35df4500 TJB |
1034 | if ((bl->address + bp_location_shadow_len_after_address_max |
1035 | >= bl->address) | |
1036 | && (bl->address + bp_location_shadow_len_after_address_max | |
1037 | <= memaddr)) | |
876fa593 JK |
1038 | bc_l = bc; |
1039 | else | |
1040 | bc_r = bc; | |
1041 | } | |
1042 | ||
128070bb PA |
1043 | /* Due to the binary search above, we need to make sure we pick the |
1044 | first location that's at BC_L's address. E.g., if there are | |
1045 | multiple locations at the same address, BC_L may end up pointing | |
1046 | at a duplicate location, and miss the "master"/"inserted" | |
1047 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1048 | B: | |
1049 | ||
1050 | L1@A, L2@A, L3@B, ... | |
1051 | ||
1052 | BC_L could end up pointing at location L2, while the "master" | |
1053 | location could be L1. Since the `loc->inserted' flag is only set | |
1054 | on "master" locations, we'd forget to restore the shadow of L1 | |
1055 | and L2. */ | |
1056 | while (bc_l > 0 | |
1057 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1058 | bc_l--; | |
1059 | ||
876fa593 JK |
1060 | /* Now do full processing of the found relevant range of elements. */ |
1061 | ||
1062 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1063 | { |
35df4500 | 1064 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1065 | CORE_ADDR bp_addr = 0; |
1066 | int bp_size = 0; | |
1067 | int bptoffset = 0; | |
1068 | ||
35df4500 TJB |
1069 | /* bp_location array has BL->OWNER always non-NULL. */ |
1070 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1071 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1072 | bl->owner->number); |
ffce0d52 | 1073 | |
876fa593 JK |
1074 | /* Performance optimization: any futher element can no longer affect BUF |
1075 | content. */ | |
1076 | ||
35df4500 TJB |
1077 | if (bl->address >= bp_location_placed_address_before_address_max |
1078 | && memaddr + len <= (bl->address | |
1079 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1080 | break; |
1081 | ||
35df4500 | 1082 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1083 | continue; |
35df4500 | 1084 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1085 | current_program_space->aspace, 0)) |
1086 | continue; | |
1087 | ||
c5aa993b JM |
1088 | /* Addresses and length of the part of the breakpoint that |
1089 | we need to copy. */ | |
35df4500 TJB |
1090 | bp_addr = bl->target_info.placed_address; |
1091 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1092 | |
c5aa993b JM |
1093 | if (bp_addr + bp_size <= memaddr) |
1094 | /* The breakpoint is entirely before the chunk of memory we | |
1095 | are reading. */ | |
1096 | continue; | |
8defab1a | 1097 | |
c5aa993b JM |
1098 | if (bp_addr >= memaddr + len) |
1099 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1100 | reading. */ |
c5aa993b | 1101 | continue; |
c5aa993b | 1102 | |
8defab1a DJ |
1103 | /* Offset within shadow_contents. */ |
1104 | if (bp_addr < memaddr) | |
1105 | { | |
1106 | /* Only copy the second part of the breakpoint. */ | |
1107 | bp_size -= memaddr - bp_addr; | |
1108 | bptoffset = memaddr - bp_addr; | |
1109 | bp_addr = memaddr; | |
1110 | } | |
c5aa993b | 1111 | |
8defab1a DJ |
1112 | if (bp_addr + bp_size > memaddr + len) |
1113 | { | |
1114 | /* Only copy the first part of the breakpoint. */ | |
1115 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1116 | } | |
c5aa993b | 1117 | |
8defab1a | 1118 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1119 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1120 | } |
c906108c | 1121 | } |
c906108c | 1122 | \f |
c5aa993b | 1123 | |
60e1c644 PA |
1124 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1125 | ||
a5606eee | 1126 | static int |
d77f58be | 1127 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1128 | { |
1129 | return (bpt->type == bp_hardware_watchpoint | |
1130 | || bpt->type == bp_read_watchpoint | |
1131 | || bpt->type == bp_access_watchpoint); | |
1132 | } | |
7270d8f2 | 1133 | |
60e1c644 PA |
1134 | /* Return true if BPT is of any watchpoint kind, hardware or |
1135 | software. */ | |
1136 | ||
1137 | static int | |
d77f58be | 1138 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1139 | { |
1140 | return (is_hardware_watchpoint (bpt) | |
1141 | || bpt->type == bp_watchpoint); | |
1142 | } | |
1143 | ||
f6bc2008 PA |
1144 | /* Assuming that B is a watchpoint: returns true if the current thread |
1145 | and its running state are safe to evaluate or update watchpoint B. | |
1146 | Watchpoints on local expressions need to be evaluated in the | |
1147 | context of the thread that was current when the watchpoint was | |
1148 | created, and, that thread needs to be stopped to be able to select | |
1149 | the correct frame context. Watchpoints on global expressions can | |
1150 | be evaluated on any thread, and in any state. It is presently left | |
1151 | to the target allowing memory accesses when threads are | |
1152 | running. */ | |
1153 | ||
1154 | static int | |
1155 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1156 | { | |
1157 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1158 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1159 | && !is_executing (inferior_ptid))); | |
1160 | } | |
1161 | ||
d0fb5eae JK |
1162 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1163 | associated bp_watchpoint_scope breakpoint. */ | |
1164 | ||
1165 | static void | |
1166 | watchpoint_del_at_next_stop (struct breakpoint *b) | |
1167 | { | |
1168 | gdb_assert (is_watchpoint (b)); | |
1169 | ||
1170 | if (b->related_breakpoint != b) | |
1171 | { | |
1172 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1173 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1174 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1175 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1176 | b->related_breakpoint = b; | |
1177 | } | |
1178 | b->disposition = disp_del_at_next_stop; | |
1179 | } | |
1180 | ||
567e1b4e JB |
1181 | /* Assuming that B is a watchpoint: |
1182 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1183 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1184 | - Evaluate the condition if there is one, and store the result |
1185 | in b->loc->cond. | |
a5606eee VP |
1186 | - Update the list of values that must be watched in B->loc. |
1187 | ||
4a64f543 MS |
1188 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1189 | nothing. If this is local watchpoint that is out of scope, delete | |
1190 | it. | |
1191 | ||
1192 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1193 | removed + inserted on each stop here. Normal breakpoints must | |
1194 | never be removed because they might be missed by a running thread | |
1195 | when debugging in non-stop mode. On the other hand, hardware | |
1196 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1197 | to each LWP since they are stored in each LWP's hardware debug | |
1198 | registers. Therefore, such LWP must be stopped first in order to | |
1199 | be able to modify its hardware watchpoints. | |
1200 | ||
1201 | Hardware watchpoints must be reset exactly once after being | |
1202 | presented to the user. It cannot be done sooner, because it would | |
1203 | reset the data used to present the watchpoint hit to the user. And | |
1204 | it must not be done later because it could display the same single | |
1205 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1206 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1207 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1208 | not user-visible - its hit is suppressed if the memory content has | |
1209 | not changed. | |
1210 | ||
1211 | The following constraints influence the location where we can reset | |
1212 | hardware watchpoints: | |
1213 | ||
1214 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1215 | called several times when GDB stops. | |
1216 | ||
1217 | [linux] | |
1218 | * Multiple hardware watchpoints can be hit at the same time, | |
1219 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1220 | hit at a time as the reason for stopping, and all the other hits | |
1221 | are presented later, one after the other, each time the user | |
1222 | requests the execution to be resumed. Execution is not resumed | |
1223 | for the threads still having pending hit event stored in | |
1224 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1225 | the inferior on the first stop the thread hit event is kept being | |
1226 | reported from its cached value by linux_nat_stopped_data_address | |
1227 | until the real thread resume happens after the watchpoint gets | |
1228 | presented and thus its LWP_INFO->STATUS gets reset. | |
1229 | ||
1230 | Therefore the hardware watchpoint hit can get safely reset on the | |
1231 | watchpoint removal from inferior. */ | |
a79d3c27 | 1232 | |
b40ce68a | 1233 | static void |
a5606eee | 1234 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1235 | { |
a5606eee | 1236 | int within_current_scope; |
a5606eee | 1237 | struct frame_id saved_frame_id; |
66076460 | 1238 | int frame_saved; |
a5606eee | 1239 | |
d0fb5eae JK |
1240 | gdb_assert (is_watchpoint (b)); |
1241 | ||
f6bc2008 PA |
1242 | /* If this is a local watchpoint, we only want to check if the |
1243 | watchpoint frame is in scope if the current thread is the thread | |
1244 | that was used to create the watchpoint. */ | |
1245 | if (!watchpoint_in_thread_scope (b)) | |
1246 | return; | |
1247 | ||
a5606eee VP |
1248 | if (b->disposition == disp_del_at_next_stop) |
1249 | return; | |
1250 | ||
66076460 | 1251 | frame_saved = 0; |
a5606eee VP |
1252 | |
1253 | /* Determine if the watchpoint is within scope. */ | |
1254 | if (b->exp_valid_block == NULL) | |
1255 | within_current_scope = 1; | |
1256 | else | |
1257 | { | |
b5db5dfc UW |
1258 | struct frame_info *fi = get_current_frame (); |
1259 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1260 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1261 | ||
1262 | /* If we're in a function epilogue, unwinding may not work | |
1263 | properly, so do not attempt to recreate locations at this | |
1264 | point. See similar comments in watchpoint_check. */ | |
1265 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1266 | return; | |
66076460 DJ |
1267 | |
1268 | /* Save the current frame's ID so we can restore it after | |
1269 | evaluating the watchpoint expression on its own frame. */ | |
1270 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1271 | took a frame parameter, so that we didn't have to change the | |
1272 | selected frame. */ | |
1273 | frame_saved = 1; | |
1274 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1275 | ||
a5606eee VP |
1276 | fi = frame_find_by_id (b->watchpoint_frame); |
1277 | within_current_scope = (fi != NULL); | |
1278 | if (within_current_scope) | |
1279 | select_frame (fi); | |
1280 | } | |
1281 | ||
b5db5dfc UW |
1282 | /* We don't free locations. They are stored in the bp_location array |
1283 | and update_global_location_list will eventually delete them and | |
1284 | remove breakpoints if needed. */ | |
1285 | b->loc = NULL; | |
1286 | ||
a5606eee VP |
1287 | if (within_current_scope && reparse) |
1288 | { | |
1289 | char *s; | |
d63d0675 | 1290 | |
a5606eee VP |
1291 | if (b->exp) |
1292 | { | |
1293 | xfree (b->exp); | |
1294 | b->exp = NULL; | |
1295 | } | |
d63d0675 | 1296 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1297 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1298 | /* If the meaning of expression itself changed, the old value is | |
1299 | no longer relevant. We don't want to report a watchpoint hit | |
1300 | to the user when the old value and the new value may actually | |
1301 | be completely different objects. */ | |
1302 | value_free (b->val); | |
fa4727a6 DJ |
1303 | b->val = NULL; |
1304 | b->val_valid = 0; | |
60e1c644 PA |
1305 | |
1306 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1307 | expression is stored in the breakpoint object, not in the | |
1308 | locations (re)created below. */ | |
1309 | if (b->cond_string != NULL) | |
1310 | { | |
1311 | if (b->cond_exp != NULL) | |
1312 | { | |
1313 | xfree (b->cond_exp); | |
1314 | b->cond_exp = NULL; | |
1315 | } | |
1316 | ||
1317 | s = b->cond_string; | |
1318 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1319 | } | |
a5606eee | 1320 | } |
a5606eee VP |
1321 | |
1322 | /* If we failed to parse the expression, for example because | |
1323 | it refers to a global variable in a not-yet-loaded shared library, | |
1324 | don't try to insert watchpoint. We don't automatically delete | |
1325 | such watchpoint, though, since failure to parse expression | |
1326 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1327 | if ( !target_has_execution) |
1328 | { | |
1329 | /* Without execution, memory can't change. No use to try and | |
1330 | set watchpoint locations. The watchpoint will be reset when | |
1331 | the target gains execution, through breakpoint_re_set. */ | |
1332 | } | |
1333 | else if (within_current_scope && b->exp) | |
a5606eee | 1334 | { |
0cf6dd15 | 1335 | int pc = 0; |
fa4727a6 | 1336 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1337 | struct program_space *frame_pspace; |
a5606eee | 1338 | |
0cf6dd15 | 1339 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1340 | |
a5606eee VP |
1341 | /* Avoid setting b->val if it's already set. The meaning of |
1342 | b->val is 'the last value' user saw, and we should update | |
1343 | it only if we reported that last value to user. As it | |
1344 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1345 | if (!b->val_valid) |
1346 | { | |
1347 | b->val = v; | |
1348 | b->val_valid = 1; | |
1349 | } | |
a5606eee | 1350 | |
2d134ed3 PA |
1351 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1352 | ||
a5606eee | 1353 | /* Look at each value on the value chain. */ |
9fa40276 | 1354 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1355 | { |
1356 | /* If it's a memory location, and GDB actually needed | |
1357 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1358 | must watch it. If the first value returned is |
1359 | still lazy, that means an error occurred reading it; | |
1360 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1361 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1362 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1363 | { |
1364 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1365 | |
a5606eee VP |
1366 | /* We only watch structs and arrays if user asked |
1367 | for it explicitly, never if they just happen to | |
1368 | appear in the middle of some value chain. */ | |
fa4727a6 | 1369 | if (v == result |
a5606eee VP |
1370 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1371 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1372 | { | |
1373 | CORE_ADDR addr; | |
1374 | int len, type; | |
1375 | struct bp_location *loc, **tmp; | |
1376 | ||
42ae5230 | 1377 | addr = value_address (v); |
a5606eee VP |
1378 | len = TYPE_LENGTH (value_type (v)); |
1379 | type = hw_write; | |
1380 | if (b->type == bp_read_watchpoint) | |
1381 | type = hw_read; | |
1382 | else if (b->type == bp_access_watchpoint) | |
1383 | type = hw_access; | |
1384 | ||
39d61571 | 1385 | loc = allocate_bp_location (b); |
a5606eee VP |
1386 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1387 | ; | |
1388 | *tmp = loc; | |
a6d9a66e | 1389 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1390 | |
1391 | loc->pspace = frame_pspace; | |
a5606eee VP |
1392 | loc->address = addr; |
1393 | loc->length = len; | |
1394 | loc->watchpoint_type = type; | |
1395 | } | |
1396 | } | |
9fa40276 TJB |
1397 | } |
1398 | ||
1399 | /* Change the type of breakpoint between hardware assisted or | |
1400 | an ordinary watchpoint depending on the hardware support | |
1401 | and free hardware slots. REPARSE is set when the inferior | |
1402 | is started. */ | |
1403 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1404 | && reparse) | |
1405 | { | |
e09342b5 | 1406 | int reg_cnt; |
9fa40276 TJB |
1407 | enum bp_loc_type loc_type; |
1408 | struct bp_location *bl; | |
a5606eee | 1409 | |
e09342b5 TJB |
1410 | reg_cnt = can_use_hardware_watchpoint (val_chain, b->exact); |
1411 | ||
1412 | if (reg_cnt) | |
9fa40276 TJB |
1413 | { |
1414 | int i, target_resources_ok, other_type_used; | |
e09342b5 | 1415 | enum enable_state orig_enable_state; |
9fa40276 TJB |
1416 | |
1417 | /* We need to determine how many resources are already | |
e09342b5 TJB |
1418 | used for all other hardware watchpoints plus this one |
1419 | to see if we still have enough resources to also fit | |
1420 | this watchpoint in as well. To guarantee the | |
1421 | hw_watchpoint_used_count call below counts this | |
1422 | watchpoint, make sure that it is marked as a hardware | |
1423 | watchpoint. */ | |
1424 | b->type = bp_hardware_watchpoint; | |
1425 | ||
1426 | /* hw_watchpoint_used_count ignores disabled watchpoints, | |
1427 | and b might be disabled if we're being called from | |
1428 | do_enable_breakpoint. */ | |
1429 | orig_enable_state = b->enable_state; | |
1430 | b->enable_state = bp_enabled; | |
1431 | ||
9fa40276 TJB |
1432 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1433 | &other_type_used); | |
9fa40276 | 1434 | |
e09342b5 TJB |
1435 | b->enable_state = orig_enable_state; |
1436 | ||
1437 | target_resources_ok = target_can_use_hardware_watchpoint | |
1438 | (bp_hardware_watchpoint, i, other_type_used); | |
1439 | if (target_resources_ok <= 0) | |
1440 | b->type = bp_watchpoint; | |
9fa40276 TJB |
1441 | } |
1442 | else | |
1443 | b->type = bp_watchpoint; | |
1444 | ||
1445 | loc_type = (b->type == bp_watchpoint? bp_loc_other | |
1446 | : bp_loc_hardware_watchpoint); | |
1447 | for (bl = b->loc; bl; bl = bl->next) | |
1448 | bl->loc_type = loc_type; | |
1449 | } | |
1450 | ||
1451 | for (v = val_chain; v; v = next) | |
1452 | { | |
a5606eee VP |
1453 | next = value_next (v); |
1454 | if (v != b->val) | |
1455 | value_free (v); | |
1456 | } | |
1457 | ||
c7437ca6 PA |
1458 | /* If a software watchpoint is not watching any memory, then the |
1459 | above left it without any location set up. But, | |
1460 | bpstat_stop_status requires a location to be able to report | |
1461 | stops, so make sure there's at least a dummy one. */ | |
1462 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1463 | { | |
1464 | b->loc = allocate_bp_location (b); | |
1465 | b->loc->pspace = frame_pspace; | |
1466 | b->loc->address = -1; | |
1467 | b->loc->length = -1; | |
1468 | b->loc->watchpoint_type = -1; | |
1469 | } | |
a5606eee VP |
1470 | } |
1471 | else if (!within_current_scope) | |
7270d8f2 | 1472 | { |
ac74f770 MS |
1473 | printf_filtered (_("\ |
1474 | Watchpoint %d deleted because the program has left the block\n\ | |
1475 | in which its expression is valid.\n"), | |
a5606eee | 1476 | b->number); |
d0fb5eae | 1477 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1478 | } |
a5606eee VP |
1479 | |
1480 | /* Restore the selected frame. */ | |
66076460 DJ |
1481 | if (frame_saved) |
1482 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1483 | } |
1484 | ||
a5606eee | 1485 | |
74960c60 VP |
1486 | /* Returns 1 iff breakpoint location should be |
1487 | inserted in the inferior. */ | |
1488 | static int | |
35df4500 | 1489 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1490 | { |
35df4500 | 1491 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1492 | return 0; |
1493 | ||
35df4500 | 1494 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1495 | return 0; |
1496 | ||
35df4500 | 1497 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1498 | return 0; |
1499 | ||
56710373 PA |
1500 | /* This is set for example, when we're attached to the parent of a |
1501 | vfork, and have detached from the child. The child is running | |
1502 | free, and we expect it to do an exec or exit, at which point the | |
1503 | OS makes the parent schedulable again (and the target reports | |
1504 | that the vfork is done). Until the child is done with the shared | |
1505 | memory region, do not insert breakpoints in the parent, otherwise | |
1506 | the child could still trip on the parent's breakpoints. Since | |
1507 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1508 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1509 | return 0; |
1510 | ||
1042e4c0 SS |
1511 | /* Tracepoints are inserted by the target at a time of its choosing, |
1512 | not by us. */ | |
35df4500 | 1513 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1514 | return 0; |
1515 | ||
74960c60 VP |
1516 | return 1; |
1517 | } | |
1518 | ||
35df4500 TJB |
1519 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1520 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1521 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1522 | |
4a64f543 MS |
1523 | NOTE drow/2003-09-09: This routine could be broken down to an |
1524 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1525 | static int |
35df4500 | 1526 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1527 | struct ui_file *tmp_error_stream, |
fa3a767f | 1528 | int *disabled_breaks, |
26bb91f3 | 1529 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1530 | { |
1531 | int val = 0; | |
1532 | ||
35df4500 | 1533 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1534 | return 0; |
1535 | ||
8181d85f | 1536 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1537 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1538 | bl->target_info.placed_address = bl->address; | |
1539 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
8181d85f | 1540 | |
35df4500 TJB |
1541 | if (bl->loc_type == bp_loc_software_breakpoint |
1542 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1543 | { |
35df4500 | 1544 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1545 | { |
1546 | /* If the explicitly specified breakpoint type | |
1547 | is not hardware breakpoint, check the memory map to see | |
1548 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1549 | |
765dc015 VP |
1550 | Two important cases are: |
1551 | - location type is not hardware breakpoint, memory | |
1552 | is readonly. We change the type of the location to | |
1553 | hardware breakpoint. | |
4a64f543 MS |
1554 | - location type is hardware breakpoint, memory is |
1555 | read-write. This means we've previously made the | |
1556 | location hardware one, but then the memory map changed, | |
1557 | so we undo. | |
765dc015 | 1558 | |
4a64f543 MS |
1559 | When breakpoints are removed, remove_breakpoints will use |
1560 | location types we've just set here, the only possible | |
1561 | problem is that memory map has changed during running | |
1562 | program, but it's not going to work anyway with current | |
1563 | gdb. */ | |
765dc015 | 1564 | struct mem_region *mr |
35df4500 | 1565 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1566 | |
1567 | if (mr) | |
1568 | { | |
1569 | if (automatic_hardware_breakpoints) | |
1570 | { | |
765dc015 VP |
1571 | enum bp_loc_type new_type; |
1572 | ||
1573 | if (mr->attrib.mode != MEM_RW) | |
1574 | new_type = bp_loc_hardware_breakpoint; | |
1575 | else | |
1576 | new_type = bp_loc_software_breakpoint; | |
1577 | ||
35df4500 | 1578 | if (new_type != bl->loc_type) |
765dc015 VP |
1579 | { |
1580 | static int said = 0; | |
cc59ec59 | 1581 | |
35df4500 | 1582 | bl->loc_type = new_type; |
765dc015 VP |
1583 | if (!said) |
1584 | { | |
3e43a32a MS |
1585 | fprintf_filtered (gdb_stdout, |
1586 | _("Note: automatically using " | |
1587 | "hardware breakpoints for " | |
1588 | "read-only addresses.\n")); | |
765dc015 VP |
1589 | said = 1; |
1590 | } | |
1591 | } | |
1592 | } | |
35df4500 | 1593 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1594 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1595 | warning (_("cannot set software breakpoint " |
1596 | "at readonly address %s"), | |
35df4500 | 1597 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1598 | } |
1599 | } | |
1600 | ||
879bfdc2 DJ |
1601 | /* First check to see if we have to handle an overlay. */ |
1602 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1603 | || bl->section == NULL |
1604 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1605 | { |
1606 | /* No overlay handling: just set the breakpoint. */ | |
1607 | ||
35df4500 TJB |
1608 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1609 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1610 | &bl->target_info); | |
879bfdc2 | 1611 | else |
35df4500 TJB |
1612 | val = target_insert_breakpoint (bl->gdbarch, |
1613 | &bl->target_info); | |
879bfdc2 DJ |
1614 | } |
1615 | else | |
1616 | { | |
4a64f543 | 1617 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1618 | Shall we set a breakpoint at the LMA? */ |
1619 | if (!overlay_events_enabled) | |
1620 | { | |
1621 | /* Yes -- overlay event support is not active, | |
1622 | so we must try to set a breakpoint at the LMA. | |
1623 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1624 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1625 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1626 | bl->owner->number); |
879bfdc2 DJ |
1627 | else |
1628 | { | |
35df4500 TJB |
1629 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1630 | bl->section); | |
879bfdc2 | 1631 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1632 | bl->overlay_target_info = bl->target_info; |
1633 | bl->overlay_target_info.placed_address = addr; | |
1634 | val = target_insert_breakpoint (bl->gdbarch, | |
1635 | &bl->overlay_target_info); | |
879bfdc2 | 1636 | if (val != 0) |
99361f52 | 1637 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1638 | "Overlay breakpoint %d " |
1639 | "failed: in ROM?\n", | |
35df4500 | 1640 | bl->owner->number); |
879bfdc2 DJ |
1641 | } |
1642 | } | |
1643 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1644 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1645 | { |
1646 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1647 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1648 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1649 | &bl->target_info); | |
879bfdc2 | 1650 | else |
35df4500 TJB |
1651 | val = target_insert_breakpoint (bl->gdbarch, |
1652 | &bl->target_info); | |
879bfdc2 DJ |
1653 | } |
1654 | else | |
1655 | { | |
1656 | /* No. This breakpoint will not be inserted. | |
1657 | No error, but do not mark the bp as 'inserted'. */ | |
1658 | return 0; | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | if (val) | |
1663 | { | |
1664 | /* Can't set the breakpoint. */ | |
35df4500 | 1665 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1666 | { |
4a64f543 | 1667 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1668 | val = 0; |
35df4500 | 1669 | bl->shlib_disabled = 1; |
879bfdc2 DJ |
1670 | if (!*disabled_breaks) |
1671 | { | |
1672 | fprintf_unfiltered (tmp_error_stream, | |
1673 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1674 | bl->owner->number); |
879bfdc2 | 1675 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1676 | "Temporarily disabling shared " |
1677 | "library breakpoints:\n"); | |
879bfdc2 DJ |
1678 | } |
1679 | *disabled_breaks = 1; | |
1680 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1681 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1682 | } |
1683 | else | |
879bfdc2 | 1684 | { |
35df4500 | 1685 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1686 | { |
1687 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1688 | fprintf_unfiltered (tmp_error_stream, |
1689 | "Cannot insert hardware " | |
1690 | "breakpoint %d.\n", | |
35df4500 | 1691 | bl->owner->number); |
879bfdc2 DJ |
1692 | } |
1693 | else | |
1694 | { | |
1695 | fprintf_unfiltered (tmp_error_stream, | |
1696 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1697 | bl->owner->number); |
879bfdc2 DJ |
1698 | fprintf_filtered (tmp_error_stream, |
1699 | "Error accessing memory address "); | |
35df4500 | 1700 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1701 | tmp_error_stream); |
879bfdc2 DJ |
1702 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1703 | safe_strerror (val)); | |
1704 | } | |
1705 | ||
1706 | } | |
1707 | } | |
1708 | else | |
35df4500 | 1709 | bl->inserted = 1; |
879bfdc2 DJ |
1710 | |
1711 | return val; | |
1712 | } | |
1713 | ||
35df4500 | 1714 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1715 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1716 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1717 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1718 | { |
77b06cd7 TJB |
1719 | gdb_assert (bl->owner->ops != NULL |
1720 | && bl->owner->ops->insert_location != NULL); | |
1721 | ||
1722 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1723 | |
1724 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1725 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1726 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1727 | { |
1728 | struct bp_location *loc, **loc_temp; | |
1729 | ||
1730 | /* But don't try to insert it, if there's already another | |
1731 | hw_access location that would be considered a duplicate | |
1732 | of this one. */ | |
1733 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1734 | if (loc != bl |
85d721b8 | 1735 | && loc->watchpoint_type == hw_access |
35df4500 | 1736 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1737 | { |
35df4500 TJB |
1738 | bl->duplicate = 1; |
1739 | bl->inserted = 1; | |
1740 | bl->target_info = loc->target_info; | |
1741 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1742 | val = 0; |
1743 | break; | |
1744 | } | |
1745 | ||
1746 | if (val == 1) | |
1747 | { | |
77b06cd7 TJB |
1748 | bl->watchpoint_type = hw_access; |
1749 | val = bl->owner->ops->insert_location (bl); | |
1750 | ||
1751 | if (val) | |
1752 | /* Back to the original value. */ | |
1753 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1754 | } |
1755 | } | |
1756 | ||
35df4500 | 1757 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1758 | } |
1759 | ||
35df4500 | 1760 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1761 | { |
77b06cd7 TJB |
1762 | gdb_assert (bl->owner->ops != NULL |
1763 | && bl->owner->ops->insert_location != NULL); | |
1764 | ||
1765 | val = bl->owner->ops->insert_location (bl); | |
1766 | if (val) | |
1767 | { | |
1768 | bl->owner->enable_state = bp_disabled; | |
1769 | ||
1770 | if (val == 1) | |
1771 | warning (_("\ | |
1772 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1773 | of catchpoint."), bl->owner->number); | |
1774 | else | |
1775 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1776 | } | |
1777 | ||
1778 | bl->inserted = (val == 0); | |
1640b821 DJ |
1779 | |
1780 | /* We've already printed an error message if there was a problem | |
1781 | inserting this catchpoint, and we've disabled the catchpoint, | |
1782 | so just return success. */ | |
1783 | return 0; | |
879bfdc2 DJ |
1784 | } |
1785 | ||
1786 | return 0; | |
1787 | } | |
1788 | ||
6c95b8df PA |
1789 | /* This function is called when program space PSPACE is about to be |
1790 | deleted. It takes care of updating breakpoints to not reference | |
1791 | PSPACE anymore. */ | |
1792 | ||
1793 | void | |
1794 | breakpoint_program_space_exit (struct program_space *pspace) | |
1795 | { | |
1796 | struct breakpoint *b, *b_temp; | |
876fa593 | 1797 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1798 | |
1799 | /* Remove any breakpoint that was set through this program space. */ | |
1800 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1801 | { | |
1802 | if (b->pspace == pspace) | |
1803 | delete_breakpoint (b); | |
1804 | } | |
1805 | ||
1806 | /* Breakpoints set through other program spaces could have locations | |
1807 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1808 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1809 | { |
1810 | struct bp_location *tmp; | |
1811 | ||
1812 | if (loc->pspace == pspace) | |
1813 | { | |
2bdf28a0 | 1814 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1815 | if (loc->owner->loc == loc) |
1816 | loc->owner->loc = loc->next; | |
1817 | else | |
1818 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1819 | if (tmp->next == loc) | |
1820 | { | |
1821 | tmp->next = loc->next; | |
1822 | break; | |
1823 | } | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | /* Now update the global location list to permanently delete the | |
1828 | removed locations above. */ | |
1829 | update_global_location_list (0); | |
1830 | } | |
1831 | ||
74960c60 VP |
1832 | /* Make sure all breakpoints are inserted in inferior. |
1833 | Throws exception on any error. | |
1834 | A breakpoint that is already inserted won't be inserted | |
1835 | again, so calling this function twice is safe. */ | |
1836 | void | |
1837 | insert_breakpoints (void) | |
1838 | { | |
1839 | struct breakpoint *bpt; | |
1840 | ||
1841 | ALL_BREAKPOINTS (bpt) | |
1842 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1843 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1844 | |
b60e7edf | 1845 | update_global_location_list (1); |
74960c60 | 1846 | |
c35b1492 PA |
1847 | /* update_global_location_list does not insert breakpoints when |
1848 | always_inserted_mode is not enabled. Explicitly insert them | |
1849 | now. */ | |
1850 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1851 | insert_breakpoint_locations (); |
1852 | } | |
1853 | ||
c906108c SS |
1854 | /* insert_breakpoints is used when starting or continuing the program. |
1855 | remove_breakpoints is used when the program stops. | |
1856 | Both return zero if successful, | |
1857 | or an `errno' value if could not write the inferior. */ | |
1858 | ||
74960c60 VP |
1859 | static void |
1860 | insert_breakpoint_locations (void) | |
c906108c | 1861 | { |
a5606eee | 1862 | struct breakpoint *bpt; |
35df4500 | 1863 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1864 | int error = 0; |
c906108c SS |
1865 | int val = 0; |
1866 | int disabled_breaks = 0; | |
81d0cc19 | 1867 | int hw_breakpoint_error = 0; |
c906108c | 1868 | |
81d0cc19 | 1869 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1870 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1871 | |
81d0cc19 GS |
1872 | /* Explicitly mark the warning -- this will only be printed if |
1873 | there was an error. */ | |
1874 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1875 | |
1876 | save_current_space_and_thread (); | |
1877 | ||
35df4500 | 1878 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1879 | { |
35df4500 | 1880 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1881 | continue; |
1882 | ||
4a64f543 MS |
1883 | /* There is no point inserting thread-specific breakpoints if |
1884 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1885 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1886 | if (bl->owner->thread != -1 |
1887 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1888 | continue; |
1889 | ||
35df4500 | 1890 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1891 | |
1892 | /* For targets that support global breakpoints, there's no need | |
1893 | to select an inferior to insert breakpoint to. In fact, even | |
1894 | if we aren't attached to any process yet, we should still | |
1895 | insert breakpoints. */ | |
1896 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1897 | && ptid_equal (inferior_ptid, null_ptid)) | |
1898 | continue; | |
1899 | ||
35df4500 | 1900 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1901 | &hw_breakpoint_error); |
1902 | if (val) | |
e236ba44 | 1903 | error = val; |
879bfdc2 | 1904 | } |
c906108c | 1905 | |
4a64f543 MS |
1906 | /* If we failed to insert all locations of a watchpoint, remove |
1907 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1908 | ALL_BREAKPOINTS (bpt) |
1909 | { | |
1910 | int some_failed = 0; | |
1911 | struct bp_location *loc; | |
1912 | ||
1913 | if (!is_hardware_watchpoint (bpt)) | |
1914 | continue; | |
1915 | ||
d6b74ac4 | 1916 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1917 | continue; |
74960c60 VP |
1918 | |
1919 | if (bpt->disposition == disp_del_at_next_stop) | |
1920 | continue; | |
a5606eee VP |
1921 | |
1922 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1923 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1924 | { |
1925 | some_failed = 1; | |
1926 | break; | |
1927 | } | |
1928 | if (some_failed) | |
1929 | { | |
1930 | for (loc = bpt->loc; loc; loc = loc->next) | |
1931 | if (loc->inserted) | |
1932 | remove_breakpoint (loc, mark_uninserted); | |
1933 | ||
1934 | hw_breakpoint_error = 1; | |
1935 | fprintf_unfiltered (tmp_error_stream, | |
1936 | "Could not insert hardware watchpoint %d.\n", | |
1937 | bpt->number); | |
1938 | error = -1; | |
1939 | } | |
1940 | } | |
1941 | ||
e236ba44 | 1942 | if (error) |
81d0cc19 GS |
1943 | { |
1944 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1945 | message about possibly exhausted resources. */ | |
879bfdc2 | 1946 | if (hw_breakpoint_error) |
81d0cc19 | 1947 | { |
c6510018 MS |
1948 | fprintf_unfiltered (tmp_error_stream, |
1949 | "Could not insert hardware breakpoints:\n\ | |
1950 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1951 | } |
81d0cc19 GS |
1952 | target_terminal_ours_for_output (); |
1953 | error_stream (tmp_error_stream); | |
1954 | } | |
f7545552 TT |
1955 | |
1956 | do_cleanups (cleanups); | |
c906108c SS |
1957 | } |
1958 | ||
c906108c | 1959 | int |
fba45db2 | 1960 | remove_breakpoints (void) |
c906108c | 1961 | { |
35df4500 | 1962 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 1963 | int val = 0; |
c906108c | 1964 | |
35df4500 | 1965 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 1966 | { |
35df4500 TJB |
1967 | if (bl->inserted) |
1968 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 1969 | } |
3a1bae8e | 1970 | return val; |
c906108c SS |
1971 | } |
1972 | ||
6c95b8df PA |
1973 | /* Remove breakpoints of process PID. */ |
1974 | ||
1975 | int | |
1976 | remove_breakpoints_pid (int pid) | |
1977 | { | |
35df4500 | 1978 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
1979 | int val; |
1980 | struct inferior *inf = find_inferior_pid (pid); | |
1981 | ||
35df4500 | 1982 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 1983 | { |
35df4500 | 1984 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
1985 | continue; |
1986 | ||
35df4500 | 1987 | if (bl->inserted) |
6c95b8df | 1988 | { |
35df4500 | 1989 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
1990 | if (val != 0) |
1991 | return val; | |
1992 | } | |
1993 | } | |
1994 | return 0; | |
1995 | } | |
1996 | ||
692590c1 | 1997 | int |
80ce1ecb | 1998 | remove_hw_watchpoints (void) |
692590c1 | 1999 | { |
35df4500 | 2000 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2001 | int val = 0; |
692590c1 | 2002 | |
35df4500 | 2003 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 2004 | { |
35df4500 TJB |
2005 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
2006 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 2007 | } |
3a1bae8e | 2008 | return val; |
692590c1 MS |
2009 | } |
2010 | ||
c906108c | 2011 | int |
fba45db2 | 2012 | reattach_breakpoints (int pid) |
c906108c | 2013 | { |
6c95b8df | 2014 | struct cleanup *old_chain; |
35df4500 | 2015 | struct bp_location *bl, **blp_tmp; |
c906108c | 2016 | int val; |
86b887df | 2017 | struct ui_file *tmp_error_stream; |
fa3a767f | 2018 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2019 | struct inferior *inf; |
2020 | struct thread_info *tp; | |
2021 | ||
2022 | tp = any_live_thread_of_process (pid); | |
2023 | if (tp == NULL) | |
2024 | return 1; | |
2025 | ||
2026 | inf = find_inferior_pid (pid); | |
2027 | old_chain = save_inferior_ptid (); | |
2028 | ||
2029 | inferior_ptid = tp->ptid; | |
a4954f26 | 2030 | |
86b887df | 2031 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2032 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2033 | |
35df4500 | 2034 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2035 | { |
35df4500 | 2036 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2037 | continue; |
2038 | ||
35df4500 | 2039 | if (bl->inserted) |
c5aa993b | 2040 | { |
35df4500 TJB |
2041 | bl->inserted = 0; |
2042 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2043 | if (val != 0) |
2044 | { | |
ce696e05 | 2045 | do_cleanups (old_chain); |
c5aa993b JM |
2046 | return val; |
2047 | } | |
2048 | } | |
2049 | } | |
ce696e05 | 2050 | do_cleanups (old_chain); |
c906108c SS |
2051 | return 0; |
2052 | } | |
2053 | ||
e58b0e63 PA |
2054 | static int internal_breakpoint_number = -1; |
2055 | ||
84f4c1fe PM |
2056 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2057 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2058 | from internal_breakpoint_number and that variable decremented. | |
2059 | Otherwis the breakpoint number will be populated from | |
2060 | breakpoint_count and that value incremented. Internal breakpoints | |
2061 | do not set the internal var bpnum. */ | |
2062 | static void | |
2063 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2064 | { | |
2065 | if (internal) | |
2066 | b->number = internal_breakpoint_number--; | |
2067 | else | |
2068 | { | |
2069 | set_breakpoint_count (breakpoint_count + 1); | |
2070 | b->number = breakpoint_count; | |
2071 | } | |
2072 | } | |
2073 | ||
e62c965a | 2074 | static struct breakpoint * |
a6d9a66e UW |
2075 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2076 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2077 | { |
e62c965a PP |
2078 | struct symtab_and_line sal; |
2079 | struct breakpoint *b; | |
2080 | ||
4a64f543 | 2081 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2082 | |
2083 | sal.pc = address; | |
2084 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2085 | sal.pspace = current_program_space; |
e62c965a | 2086 | |
a6d9a66e | 2087 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2088 | b->number = internal_breakpoint_number--; |
2089 | b->disposition = disp_donttouch; | |
2090 | ||
2091 | return b; | |
2092 | } | |
2093 | ||
17450429 PP |
2094 | static const char *const longjmp_names[] = |
2095 | { | |
2096 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2097 | }; | |
2098 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2099 | ||
2100 | /* Per-objfile data private to breakpoint.c. */ | |
2101 | struct breakpoint_objfile_data | |
2102 | { | |
2103 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2104 | struct minimal_symbol *overlay_msym; | |
2105 | ||
2106 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2107 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2108 | ||
2109 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2110 | struct minimal_symbol *terminate_msym; | |
2111 | ||
2112 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2113 | struct minimal_symbol *exception_msym; | |
2114 | }; | |
2115 | ||
2116 | static const struct objfile_data *breakpoint_objfile_key; | |
2117 | ||
2118 | /* Minimal symbol not found sentinel. */ | |
2119 | static struct minimal_symbol msym_not_found; | |
2120 | ||
2121 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2122 | ||
2123 | static int | |
2124 | msym_not_found_p (const struct minimal_symbol *msym) | |
2125 | { | |
2126 | return msym == &msym_not_found; | |
2127 | } | |
2128 | ||
2129 | /* Return per-objfile data needed by breakpoint.c. | |
2130 | Allocate the data if necessary. */ | |
2131 | ||
2132 | static struct breakpoint_objfile_data * | |
2133 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2134 | { | |
2135 | struct breakpoint_objfile_data *bp_objfile_data; | |
2136 | ||
2137 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2138 | if (bp_objfile_data == NULL) | |
2139 | { | |
2140 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2141 | sizeof (*bp_objfile_data)); | |
2142 | ||
2143 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2144 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2145 | } | |
2146 | return bp_objfile_data; | |
2147 | } | |
2148 | ||
e62c965a | 2149 | static void |
af02033e | 2150 | create_overlay_event_breakpoint (void) |
e62c965a | 2151 | { |
69de3c6a | 2152 | struct objfile *objfile; |
af02033e | 2153 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2154 | |
69de3c6a PP |
2155 | ALL_OBJFILES (objfile) |
2156 | { | |
2157 | struct breakpoint *b; | |
17450429 PP |
2158 | struct breakpoint_objfile_data *bp_objfile_data; |
2159 | CORE_ADDR addr; | |
69de3c6a | 2160 | |
17450429 PP |
2161 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2162 | ||
2163 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2164 | continue; | |
2165 | ||
2166 | if (bp_objfile_data->overlay_msym == NULL) | |
2167 | { | |
2168 | struct minimal_symbol *m; | |
2169 | ||
2170 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2171 | if (m == NULL) | |
2172 | { | |
2173 | /* Avoid future lookups in this objfile. */ | |
2174 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2175 | continue; | |
2176 | } | |
2177 | bp_objfile_data->overlay_msym = m; | |
2178 | } | |
e62c965a | 2179 | |
17450429 PP |
2180 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2181 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
69de3c6a PP |
2182 | bp_overlay_event); |
2183 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2184 | |
69de3c6a PP |
2185 | if (overlay_debugging == ovly_auto) |
2186 | { | |
2187 | b->enable_state = bp_enabled; | |
2188 | overlay_events_enabled = 1; | |
2189 | } | |
2190 | else | |
2191 | { | |
2192 | b->enable_state = bp_disabled; | |
2193 | overlay_events_enabled = 0; | |
2194 | } | |
e62c965a PP |
2195 | } |
2196 | update_global_location_list (1); | |
2197 | } | |
2198 | ||
0fd8e87f | 2199 | static void |
af02033e | 2200 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2201 | { |
6c95b8df | 2202 | struct program_space *pspace; |
6c95b8df PA |
2203 | struct cleanup *old_chain; |
2204 | ||
2205 | old_chain = save_current_program_space (); | |
0fd8e87f | 2206 | |
6c95b8df | 2207 | ALL_PSPACES (pspace) |
af02033e PP |
2208 | { |
2209 | struct objfile *objfile; | |
2210 | ||
2211 | set_current_program_space (pspace); | |
2212 | ||
2213 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2214 | { |
af02033e PP |
2215 | int i; |
2216 | struct gdbarch *gdbarch; | |
17450429 | 2217 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2218 | |
af02033e PP |
2219 | gdbarch = get_objfile_arch (objfile); |
2220 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2221 | continue; |
2222 | ||
17450429 PP |
2223 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2224 | ||
2225 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2226 | { |
2227 | struct breakpoint *b; | |
af02033e | 2228 | const char *func_name; |
17450429 | 2229 | CORE_ADDR addr; |
6c95b8df | 2230 | |
17450429 | 2231 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2232 | continue; |
0fd8e87f | 2233 | |
17450429 PP |
2234 | func_name = longjmp_names[i]; |
2235 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2236 | { | |
2237 | struct minimal_symbol *m; | |
2238 | ||
2239 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2240 | if (m == NULL) | |
2241 | { | |
2242 | /* Prevent future lookups in this objfile. */ | |
2243 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2244 | continue; | |
2245 | } | |
2246 | bp_objfile_data->longjmp_msym[i] = m; | |
2247 | } | |
2248 | ||
2249 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
2250 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); | |
af02033e PP |
2251 | b->addr_string = xstrdup (func_name); |
2252 | b->enable_state = bp_disabled; | |
2253 | } | |
0fd8e87f | 2254 | } |
af02033e | 2255 | } |
0fd8e87f | 2256 | update_global_location_list (1); |
6c95b8df PA |
2257 | |
2258 | do_cleanups (old_chain); | |
0fd8e87f UW |
2259 | } |
2260 | ||
af02033e | 2261 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2262 | static void |
af02033e | 2263 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2264 | { |
2265 | struct program_space *pspace; | |
aa7d318d | 2266 | struct cleanup *old_chain; |
af02033e | 2267 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2268 | |
2269 | old_chain = save_current_program_space (); | |
2270 | ||
2271 | ALL_PSPACES (pspace) | |
17450429 PP |
2272 | { |
2273 | struct objfile *objfile; | |
2274 | CORE_ADDR addr; | |
2275 | ||
2276 | set_current_program_space (pspace); | |
2277 | ||
aa7d318d TT |
2278 | ALL_OBJFILES (objfile) |
2279 | { | |
2280 | struct breakpoint *b; | |
17450429 | 2281 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2282 | |
17450429 | 2283 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2284 | |
17450429 PP |
2285 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2286 | continue; | |
2287 | ||
2288 | if (bp_objfile_data->terminate_msym == NULL) | |
2289 | { | |
2290 | struct minimal_symbol *m; | |
2291 | ||
2292 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2293 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2294 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2295 | { | |
2296 | /* Prevent future lookups in this objfile. */ | |
2297 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2298 | continue; | |
2299 | } | |
2300 | bp_objfile_data->terminate_msym = m; | |
2301 | } | |
aa7d318d | 2302 | |
17450429 PP |
2303 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2304 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
aa7d318d TT |
2305 | bp_std_terminate_master); |
2306 | b->addr_string = xstrdup (func_name); | |
2307 | b->enable_state = bp_disabled; | |
2308 | } | |
17450429 PP |
2309 | } |
2310 | ||
aa7d318d TT |
2311 | update_global_location_list (1); |
2312 | ||
2313 | do_cleanups (old_chain); | |
2314 | } | |
2315 | ||
186c406b TT |
2316 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2317 | ||
2318 | void | |
2319 | create_exception_master_breakpoint (void) | |
2320 | { | |
2321 | struct objfile *objfile; | |
17450429 | 2322 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2323 | |
2324 | ALL_OBJFILES (objfile) | |
2325 | { | |
17450429 PP |
2326 | struct breakpoint *b; |
2327 | struct gdbarch *gdbarch; | |
2328 | struct breakpoint_objfile_data *bp_objfile_data; | |
2329 | CORE_ADDR addr; | |
2330 | ||
2331 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2332 | ||
2333 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2334 | continue; | |
2335 | ||
2336 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2337 | |
17450429 | 2338 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2339 | { |
17450429 | 2340 | struct minimal_symbol *debug_hook; |
186c406b | 2341 | |
17450429 PP |
2342 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2343 | if (debug_hook == NULL) | |
2344 | { | |
2345 | bp_objfile_data->exception_msym = &msym_not_found; | |
2346 | continue; | |
2347 | } | |
2348 | ||
2349 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2350 | } |
17450429 PP |
2351 | |
2352 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2353 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2354 | ¤t_target); | |
2355 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2356 | b->addr_string = xstrdup (func_name); | |
2357 | b->enable_state = bp_disabled; | |
186c406b TT |
2358 | } |
2359 | ||
2360 | update_global_location_list (1); | |
2361 | } | |
2362 | ||
c906108c | 2363 | void |
fba45db2 | 2364 | update_breakpoints_after_exec (void) |
c906108c | 2365 | { |
35df4500 | 2366 | struct breakpoint *b, *b_tmp; |
876fa593 | 2367 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2368 | |
25b22b0a PA |
2369 | /* We're about to delete breakpoints from GDB's lists. If the |
2370 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2371 | writing the breakpoints' "shadow contents" back into memory. The | |
2372 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2373 | do that. Instead, the target is responsible from marking | |
2374 | breakpoints out as soon as it detects an exec. We don't do that | |
2375 | here instead, because there may be other attempts to delete | |
2376 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2377 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2378 | if (bploc->pspace == current_program_space) |
2379 | gdb_assert (!bploc->inserted); | |
c906108c | 2380 | |
35df4500 | 2381 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2382 | { |
6c95b8df PA |
2383 | if (b->pspace != current_program_space) |
2384 | continue; | |
2385 | ||
4a64f543 | 2386 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2387 | if (b->type == bp_shlib_event) |
2388 | { | |
2389 | delete_breakpoint (b); | |
2390 | continue; | |
2391 | } | |
c906108c | 2392 | |
4a64f543 | 2393 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2394 | if (b->type == bp_jit_event) |
2395 | { | |
2396 | delete_breakpoint (b); | |
2397 | continue; | |
2398 | } | |
2399 | ||
1900040c | 2400 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2401 | as must overlay event and longjmp master breakpoints. */ |
2402 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2403 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2404 | || b->type == bp_exception_master) | |
c4093a6a JM |
2405 | { |
2406 | delete_breakpoint (b); | |
2407 | continue; | |
2408 | } | |
2409 | ||
4a64f543 | 2410 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2411 | if (b->type == bp_step_resume) |
2412 | { | |
2413 | delete_breakpoint (b); | |
2414 | continue; | |
2415 | } | |
2416 | ||
611c83ae PA |
2417 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2418 | after an exec. */ | |
186c406b TT |
2419 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2420 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2421 | { |
2422 | delete_breakpoint (b); | |
2423 | continue; | |
2424 | } | |
2425 | ||
ce78b96d JB |
2426 | if (b->type == bp_catchpoint) |
2427 | { | |
2428 | /* For now, none of the bp_catchpoint breakpoints need to | |
2429 | do anything at this point. In the future, if some of | |
2430 | the catchpoints need to something, we will need to add | |
2431 | a new method, and call this method from here. */ | |
2432 | continue; | |
2433 | } | |
2434 | ||
c5aa993b JM |
2435 | /* bp_finish is a special case. The only way we ought to be able |
2436 | to see one of these when an exec() has happened, is if the user | |
2437 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2438 | carries them to the call-site of the current callee, by setting | |
2439 | a temporary bp there and resuming. But in this case, the finish | |
2440 | will carry them entirely through the vfork & exec. | |
2441 | ||
2442 | We don't want to allow a bp_finish to remain inserted now. But | |
2443 | we can't safely delete it, 'cause finish_command has a handle to | |
2444 | the bp on a bpstat, and will later want to delete it. There's a | |
2445 | chance (and I've seen it happen) that if we delete the bp_finish | |
2446 | here, that its storage will get reused by the time finish_command | |
2447 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2448 | We really must allow finish_command to delete a bp_finish. | |
2449 | ||
53a5351d JM |
2450 | In the absense of a general solution for the "how do we know |
2451 | it's safe to delete something others may have handles to?" | |
2452 | problem, what we'll do here is just uninsert the bp_finish, and | |
2453 | let finish_command delete it. | |
2454 | ||
2455 | (We know the bp_finish is "doomed" in the sense that it's | |
2456 | momentary, and will be deleted as soon as finish_command sees | |
2457 | the inferior stopped. So it doesn't matter that the bp's | |
2458 | address is probably bogus in the new a.out, unlike e.g., the | |
2459 | solib breakpoints.) */ | |
c5aa993b | 2460 | |
c5aa993b JM |
2461 | if (b->type == bp_finish) |
2462 | { | |
2463 | continue; | |
2464 | } | |
2465 | ||
2466 | /* Without a symbolic address, we have little hope of the | |
2467 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2468 | a.out. */ |
c5aa993b JM |
2469 | if (b->addr_string == NULL) |
2470 | { | |
2471 | delete_breakpoint (b); | |
2472 | continue; | |
2473 | } | |
c5aa993b | 2474 | } |
1900040c | 2475 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2476 | create_overlay_event_breakpoint (); |
2477 | create_longjmp_master_breakpoint (); | |
2478 | create_std_terminate_master_breakpoint (); | |
186c406b | 2479 | create_exception_master_breakpoint (); |
c906108c SS |
2480 | } |
2481 | ||
2482 | int | |
fba45db2 | 2483 | detach_breakpoints (int pid) |
c906108c | 2484 | { |
35df4500 | 2485 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2486 | int val = 0; |
ce696e05 | 2487 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2488 | struct inferior *inf = current_inferior (); |
c5aa993b | 2489 | |
39f77062 | 2490 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2491 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2492 | |
6c95b8df | 2493 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2494 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2495 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2496 | { |
35df4500 | 2497 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2498 | continue; |
2499 | ||
35df4500 TJB |
2500 | if (bl->inserted) |
2501 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2502 | } |
d03285ec UW |
2503 | |
2504 | /* Detach single-step breakpoints as well. */ | |
2505 | detach_single_step_breakpoints (); | |
2506 | ||
ce696e05 | 2507 | do_cleanups (old_chain); |
3a1bae8e | 2508 | return val; |
c906108c SS |
2509 | } |
2510 | ||
35df4500 | 2511 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2512 | Note that this is used to detach breakpoints from a child fork. |
2513 | When we get here, the child isn't in the inferior list, and neither | |
2514 | do we have objects to represent its address space --- we should | |
35df4500 | 2515 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2516 | |
c906108c | 2517 | static int |
35df4500 | 2518 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2519 | { |
2520 | int val; | |
c5aa993b | 2521 | |
35df4500 TJB |
2522 | /* BL is never in moribund_locations by our callers. */ |
2523 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2524 | |
35df4500 | 2525 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2526 | /* Permanent breakpoints cannot be inserted or removed. */ |
2527 | return 0; | |
2528 | ||
74960c60 VP |
2529 | /* The type of none suggests that owner is actually deleted. |
2530 | This should not ever happen. */ | |
35df4500 | 2531 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2532 | |
35df4500 TJB |
2533 | if (bl->loc_type == bp_loc_software_breakpoint |
2534 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2535 | { |
c02f5703 MS |
2536 | /* "Normal" instruction breakpoint: either the standard |
2537 | trap-instruction bp (bp_breakpoint), or a | |
2538 | bp_hardware_breakpoint. */ | |
2539 | ||
2540 | /* First check to see if we have to handle an overlay. */ | |
2541 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2542 | || bl->section == NULL |
2543 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2544 | { |
2545 | /* No overlay handling: just remove the breakpoint. */ | |
2546 | ||
35df4500 TJB |
2547 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2548 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2549 | else |
35df4500 | 2550 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2551 | } |
c906108c SS |
2552 | else |
2553 | { | |
4a64f543 | 2554 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2555 | Did we set a breakpoint at the LMA? */ |
2556 | if (!overlay_events_enabled) | |
2557 | { | |
2558 | /* Yes -- overlay event support is not active, so we | |
2559 | should have set a breakpoint at the LMA. Remove it. | |
2560 | */ | |
c02f5703 MS |
2561 | /* Ignore any failures: if the LMA is in ROM, we will |
2562 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2563 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2564 | target_remove_hw_breakpoint (bl->gdbarch, | |
2565 | &bl->overlay_target_info); | |
c02f5703 | 2566 | else |
35df4500 TJB |
2567 | target_remove_breakpoint (bl->gdbarch, |
2568 | &bl->overlay_target_info); | |
c02f5703 MS |
2569 | } |
2570 | /* Did we set a breakpoint at the VMA? | |
2571 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2572 | if (bl->inserted) |
c906108c | 2573 | { |
c02f5703 MS |
2574 | /* Yes -- remove it. Previously we did not bother to |
2575 | remove the breakpoint if the section had been | |
2576 | unmapped, but let's not rely on that being safe. We | |
2577 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2578 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2579 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2580 | &bl->target_info); | |
aa67235e UW |
2581 | |
2582 | /* However, we should remove *software* breakpoints only | |
2583 | if the section is still mapped, or else we overwrite | |
2584 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2585 | else if (section_is_mapped (bl->section)) |
2586 | val = target_remove_breakpoint (bl->gdbarch, | |
2587 | &bl->target_info); | |
aa67235e UW |
2588 | else |
2589 | val = 0; | |
c906108c | 2590 | } |
c02f5703 MS |
2591 | else |
2592 | { | |
2593 | /* No -- not inserted, so no need to remove. No error. */ | |
2594 | val = 0; | |
2595 | } | |
c906108c | 2596 | } |
879d1e6b UW |
2597 | |
2598 | /* In some cases, we might not be able to remove a breakpoint | |
2599 | in a shared library that has already been removed, but we | |
2600 | have not yet processed the shlib unload event. */ | |
35df4500 | 2601 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2602 | val = 0; |
2603 | ||
c906108c SS |
2604 | if (val) |
2605 | return val; | |
35df4500 | 2606 | bl->inserted = (is == mark_inserted); |
c906108c | 2607 | } |
35df4500 | 2608 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2609 | { |
77b06cd7 TJB |
2610 | gdb_assert (bl->owner->ops != NULL |
2611 | && bl->owner->ops->remove_location != NULL); | |
2612 | ||
35df4500 | 2613 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2614 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2615 | |
c906108c | 2616 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2617 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2618 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2619 | bl->owner->number); |
c906108c | 2620 | } |
35df4500 TJB |
2621 | else if (bl->owner->type == bp_catchpoint |
2622 | && breakpoint_enabled (bl->owner) | |
2623 | && !bl->duplicate) | |
ce78b96d | 2624 | { |
77b06cd7 TJB |
2625 | gdb_assert (bl->owner->ops != NULL |
2626 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2627 | |
77b06cd7 | 2628 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2629 | if (val) |
2630 | return val; | |
77b06cd7 | 2631 | |
35df4500 | 2632 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2633 | } |
c906108c SS |
2634 | |
2635 | return 0; | |
2636 | } | |
2637 | ||
6c95b8df | 2638 | static int |
35df4500 | 2639 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2640 | { |
2641 | int ret; | |
2642 | struct cleanup *old_chain; | |
2643 | ||
35df4500 TJB |
2644 | /* BL is never in moribund_locations by our callers. */ |
2645 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2646 | |
35df4500 | 2647 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2648 | /* Permanent breakpoints cannot be inserted or removed. */ |
2649 | return 0; | |
2650 | ||
2651 | /* The type of none suggests that owner is actually deleted. | |
2652 | This should not ever happen. */ | |
35df4500 | 2653 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2654 | |
2655 | old_chain = save_current_space_and_thread (); | |
2656 | ||
35df4500 | 2657 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2658 | |
35df4500 | 2659 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2660 | |
2661 | do_cleanups (old_chain); | |
2662 | return ret; | |
2663 | } | |
2664 | ||
c906108c SS |
2665 | /* Clear the "inserted" flag in all breakpoints. */ |
2666 | ||
25b22b0a | 2667 | void |
fba45db2 | 2668 | mark_breakpoints_out (void) |
c906108c | 2669 | { |
35df4500 | 2670 | struct bp_location *bl, **blp_tmp; |
c906108c | 2671 | |
35df4500 TJB |
2672 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2673 | if (bl->pspace == current_program_space) | |
2674 | bl->inserted = 0; | |
c906108c SS |
2675 | } |
2676 | ||
53a5351d JM |
2677 | /* Clear the "inserted" flag in all breakpoints and delete any |
2678 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2679 | |
2680 | Plus other such housekeeping that has to be done for breakpoints | |
2681 | between runs. | |
2682 | ||
53a5351d JM |
2683 | Note: this function gets called at the end of a run (by |
2684 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2685 | init_wait_for_inferior). */ |
c906108c SS |
2686 | |
2687 | ||
2688 | ||
2689 | void | |
fba45db2 | 2690 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2691 | { |
35df4500 TJB |
2692 | struct breakpoint *b, *b_tmp; |
2693 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2694 | int ix; |
6c95b8df | 2695 | struct program_space *pspace = current_program_space; |
c906108c | 2696 | |
50c71eaf PA |
2697 | /* If breakpoint locations are shared across processes, then there's |
2698 | nothing to do. */ | |
2567c7d9 | 2699 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2700 | return; |
2701 | ||
35df4500 | 2702 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2703 | { |
35df4500 TJB |
2704 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2705 | if (bl->pspace == pspace | |
2706 | && bl->owner->enable_state != bp_permanent) | |
2707 | bl->inserted = 0; | |
6c95b8df | 2708 | } |
075f6582 | 2709 | |
35df4500 | 2710 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2711 | { |
6c95b8df PA |
2712 | if (b->loc && b->loc->pspace != pspace) |
2713 | continue; | |
2714 | ||
c5aa993b JM |
2715 | switch (b->type) |
2716 | { | |
2717 | case bp_call_dummy: | |
c906108c | 2718 | |
c5aa993b | 2719 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2720 | cause problems when the inferior is rerun, so we better get |
2721 | rid of it. */ | |
2722 | ||
2723 | case bp_watchpoint_scope: | |
2724 | ||
2725 | /* Also get rid of scope breakpoints. */ | |
2726 | ||
2727 | case bp_shlib_event: | |
2728 | ||
2729 | /* Also remove solib event breakpoints. Their addresses may | |
2730 | have changed since the last time we ran the program. | |
2731 | Actually we may now be debugging against different target; | |
2732 | and so the solib backend that installed this breakpoint may | |
2733 | not be used in by the target. E.g., | |
2734 | ||
2735 | (gdb) file prog-linux | |
2736 | (gdb) run # native linux target | |
2737 | ... | |
2738 | (gdb) kill | |
2739 | (gdb) file prog-win.exe | |
2740 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2741 | */ | |
c906108c | 2742 | |
c5aa993b JM |
2743 | delete_breakpoint (b); |
2744 | break; | |
c906108c | 2745 | |
c5aa993b JM |
2746 | case bp_watchpoint: |
2747 | case bp_hardware_watchpoint: | |
2748 | case bp_read_watchpoint: | |
2749 | case bp_access_watchpoint: | |
c906108c | 2750 | |
c5aa993b JM |
2751 | /* Likewise for watchpoints on local expressions. */ |
2752 | if (b->exp_valid_block != NULL) | |
2753 | delete_breakpoint (b); | |
967af18d | 2754 | else if (context == inf_starting) |
c860120c | 2755 | { |
4a64f543 MS |
2756 | /* Reset val field to force reread of starting value in |
2757 | insert_breakpoints. */ | |
c860120c PM |
2758 | if (b->val) |
2759 | value_free (b->val); | |
2760 | b->val = NULL; | |
fa4727a6 | 2761 | b->val_valid = 0; |
c860120c | 2762 | } |
c5aa993b JM |
2763 | break; |
2764 | default: | |
c5aa993b JM |
2765 | break; |
2766 | } | |
2767 | } | |
1c5cfe86 PA |
2768 | |
2769 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2770 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2771 | decref_bp_location (&bl); | |
1c5cfe86 | 2772 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2773 | } |
2774 | ||
6c95b8df PA |
2775 | /* These functions concern about actual breakpoints inserted in the |
2776 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2777 | we need to hop over the bkpt --- so we check for address space | |
2778 | match, not program space. */ | |
2779 | ||
c2c6d25f JM |
2780 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2781 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2782 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2783 | permanent breakpoint. | |
2784 | - When continuing from a location with an ordinary breakpoint, we | |
2785 | actually single step once before calling insert_breakpoints. | |
2786 | - When continuing from a localion with a permanent breakpoint, we | |
2787 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2788 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2789 | |
c2c6d25f | 2790 | enum breakpoint_here |
6c95b8df | 2791 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2792 | { |
35df4500 | 2793 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2794 | int any_breakpoint_here = 0; |
c906108c | 2795 | |
35df4500 | 2796 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2797 | { |
35df4500 TJB |
2798 | if (bl->loc_type != bp_loc_software_breakpoint |
2799 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2800 | continue; |
2801 | ||
35df4500 TJB |
2802 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2803 | if ((breakpoint_enabled (bl->owner) | |
2804 | || bl->owner->enable_state == bp_permanent) | |
2805 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2806 | aspace, pc)) |
075f6582 DJ |
2807 | { |
2808 | if (overlay_debugging | |
35df4500 TJB |
2809 | && section_is_overlay (bl->section) |
2810 | && !section_is_mapped (bl->section)) | |
075f6582 | 2811 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2812 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2813 | return permanent_breakpoint_here; |
2814 | else | |
2815 | any_breakpoint_here = 1; | |
2816 | } | |
2817 | } | |
c906108c | 2818 | |
c2c6d25f | 2819 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2820 | } |
2821 | ||
1c5cfe86 PA |
2822 | /* Return true if there's a moribund breakpoint at PC. */ |
2823 | ||
2824 | int | |
6c95b8df | 2825 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2826 | { |
2827 | struct bp_location *loc; | |
2828 | int ix; | |
2829 | ||
2830 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2831 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2832 | aspace, pc)) | |
1c5cfe86 PA |
2833 | return 1; |
2834 | ||
2835 | return 0; | |
2836 | } | |
c2c6d25f | 2837 | |
c36b740a | 2838 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2839 | inserted using regular breakpoint_chain / bp_location array |
2840 | mechanism. This does not check for single-step breakpoints, which | |
2841 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2842 | |
2843 | int | |
4a64f543 MS |
2844 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2845 | CORE_ADDR pc) | |
c906108c | 2846 | { |
35df4500 | 2847 | struct bp_location *bl, **blp_tmp; |
c906108c | 2848 | |
35df4500 | 2849 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2850 | { |
35df4500 TJB |
2851 | if (bl->loc_type != bp_loc_software_breakpoint |
2852 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2853 | continue; |
2854 | ||
35df4500 TJB |
2855 | if (bl->inserted |
2856 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2857 | aspace, pc)) |
075f6582 DJ |
2858 | { |
2859 | if (overlay_debugging | |
35df4500 TJB |
2860 | && section_is_overlay (bl->section) |
2861 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2862 | continue; /* unmapped overlay -- can't be a match */ |
2863 | else | |
2864 | return 1; | |
2865 | } | |
c5aa993b | 2866 | } |
c36b740a VP |
2867 | return 0; |
2868 | } | |
2869 | ||
2870 | /* Returns non-zero iff there's either regular breakpoint | |
2871 | or a single step breakpoint inserted at PC. */ | |
2872 | ||
2873 | int | |
6c95b8df | 2874 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2875 | { |
6c95b8df | 2876 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2877 | return 1; |
c906108c | 2878 | |
6c95b8df | 2879 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2880 | return 1; |
2881 | ||
c906108c SS |
2882 | return 0; |
2883 | } | |
2884 | ||
4fa8626c DJ |
2885 | /* This function returns non-zero iff there is a software breakpoint |
2886 | inserted at PC. */ | |
2887 | ||
2888 | int | |
3e43a32a MS |
2889 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
2890 | CORE_ADDR pc) | |
4fa8626c | 2891 | { |
35df4500 | 2892 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2893 | |
35df4500 | 2894 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2895 | { |
35df4500 | 2896 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2897 | continue; |
2898 | ||
35df4500 TJB |
2899 | if (bl->inserted |
2900 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2901 | aspace, pc)) |
4fa8626c DJ |
2902 | { |
2903 | if (overlay_debugging | |
35df4500 TJB |
2904 | && section_is_overlay (bl->section) |
2905 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2906 | continue; /* unmapped overlay -- can't be a match */ |
2907 | else | |
2908 | return 1; | |
2909 | } | |
2910 | } | |
2911 | ||
1aafd4da | 2912 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2913 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2914 | return 1; |
2915 | ||
4fa8626c DJ |
2916 | return 0; |
2917 | } | |
2918 | ||
9093389c PA |
2919 | int |
2920 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2921 | CORE_ADDR addr, ULONGEST len) | |
2922 | { | |
2923 | struct breakpoint *bpt; | |
2924 | ||
2925 | ALL_BREAKPOINTS (bpt) | |
2926 | { | |
2927 | struct bp_location *loc; | |
2928 | ||
2929 | if (bpt->type != bp_hardware_watchpoint | |
2930 | && bpt->type != bp_access_watchpoint) | |
2931 | continue; | |
2932 | ||
2933 | if (!breakpoint_enabled (bpt)) | |
2934 | continue; | |
2935 | ||
2936 | for (loc = bpt->loc; loc; loc = loc->next) | |
2937 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2938 | { | |
2939 | CORE_ADDR l, h; | |
2940 | ||
2941 | /* Check for intersection. */ | |
2942 | l = max (loc->address, addr); | |
2943 | h = min (loc->address + loc->length, addr + len); | |
2944 | if (l < h) | |
2945 | return 1; | |
2946 | } | |
2947 | } | |
2948 | return 0; | |
2949 | } | |
2950 | ||
075f6582 DJ |
2951 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2952 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2953 | |
2954 | int | |
6c95b8df PA |
2955 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2956 | ptid_t ptid) | |
c906108c | 2957 | { |
35df4500 | 2958 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2959 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2960 | int thread = -1; |
4a306c9a | 2961 | int task = 0; |
a6f1cd96 | 2962 | |
35df4500 | 2963 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2964 | { |
35df4500 TJB |
2965 | if (bl->loc_type != bp_loc_software_breakpoint |
2966 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2967 | continue; |
2968 | ||
35df4500 TJB |
2969 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2970 | if (!breakpoint_enabled (bl->owner) | |
2971 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2972 | continue; |
2973 | ||
35df4500 | 2974 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
6c95b8df | 2975 | aspace, pc)) |
a6f1cd96 JB |
2976 | continue; |
2977 | ||
35df4500 | 2978 | if (bl->owner->thread != -1) |
075f6582 | 2979 | { |
a6f1cd96 JB |
2980 | /* This is a thread-specific breakpoint. Check that ptid |
2981 | matches that thread. If thread hasn't been computed yet, | |
2982 | it is now time to do so. */ | |
2983 | if (thread == -1) | |
2984 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2985 | if (bl->owner->thread != thread) |
a6f1cd96 | 2986 | continue; |
075f6582 | 2987 | } |
a6f1cd96 | 2988 | |
35df4500 | 2989 | if (bl->owner->task != 0) |
4a306c9a JB |
2990 | { |
2991 | /* This is a task-specific breakpoint. Check that ptid | |
2992 | matches that task. If task hasn't been computed yet, | |
2993 | it is now time to do so. */ | |
2994 | if (task == 0) | |
2995 | task = ada_get_task_number (ptid); | |
35df4500 | 2996 | if (bl->owner->task != task) |
4a306c9a JB |
2997 | continue; |
2998 | } | |
2999 | ||
a6f1cd96 | 3000 | if (overlay_debugging |
35df4500 TJB |
3001 | && section_is_overlay (bl->section) |
3002 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3003 | continue; /* unmapped overlay -- can't be a match */ |
3004 | ||
3005 | return 1; | |
c5aa993b | 3006 | } |
c906108c SS |
3007 | |
3008 | return 0; | |
3009 | } | |
c906108c | 3010 | \f |
c5aa993b | 3011 | |
c906108c SS |
3012 | /* bpstat stuff. External routines' interfaces are documented |
3013 | in breakpoint.h. */ | |
3014 | ||
3015 | int | |
fba45db2 | 3016 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3017 | { |
533be4dd | 3018 | return (ep->type == bp_catchpoint); |
c906108c SS |
3019 | } |
3020 | ||
f431efe5 PA |
3021 | /* Frees any storage that is part of a bpstat. Does not walk the |
3022 | 'next' chain. */ | |
3023 | ||
3024 | static void | |
198757a8 VP |
3025 | bpstat_free (bpstat bs) |
3026 | { | |
3027 | if (bs->old_val != NULL) | |
3028 | value_free (bs->old_val); | |
9add0f1b | 3029 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3030 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3031 | xfree (bs); |
3032 | } | |
3033 | ||
c906108c SS |
3034 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3035 | Also free any storage that is part of a bpstat. */ | |
3036 | ||
3037 | void | |
fba45db2 | 3038 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3039 | { |
3040 | bpstat p; | |
3041 | bpstat q; | |
3042 | ||
3043 | if (bsp == 0) | |
3044 | return; | |
3045 | p = *bsp; | |
3046 | while (p != NULL) | |
3047 | { | |
3048 | q = p->next; | |
198757a8 | 3049 | bpstat_free (p); |
c906108c SS |
3050 | p = q; |
3051 | } | |
3052 | *bsp = NULL; | |
3053 | } | |
3054 | ||
3055 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3056 | is part of the bpstat is copied as well. */ | |
3057 | ||
3058 | bpstat | |
fba45db2 | 3059 | bpstat_copy (bpstat bs) |
c906108c SS |
3060 | { |
3061 | bpstat p = NULL; | |
3062 | bpstat tmp; | |
3063 | bpstat retval = NULL; | |
3064 | ||
3065 | if (bs == NULL) | |
3066 | return bs; | |
3067 | ||
3068 | for (; bs != NULL; bs = bs->next) | |
3069 | { | |
3070 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3071 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3072 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3073 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3074 | if (bs->old_val != NULL) |
3c3185ac JK |
3075 | { |
3076 | tmp->old_val = value_copy (bs->old_val); | |
3077 | release_value (tmp->old_val); | |
3078 | } | |
31cc81e9 | 3079 | |
c906108c SS |
3080 | if (p == NULL) |
3081 | /* This is the first thing in the chain. */ | |
3082 | retval = tmp; | |
3083 | else | |
3084 | p->next = tmp; | |
3085 | p = tmp; | |
3086 | } | |
3087 | p->next = NULL; | |
3088 | return retval; | |
3089 | } | |
3090 | ||
4a64f543 | 3091 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3092 | |
3093 | bpstat | |
fba45db2 | 3094 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3095 | { |
c5aa993b JM |
3096 | if (bsp == NULL) |
3097 | return NULL; | |
c906108c | 3098 | |
c5aa993b JM |
3099 | for (; bsp != NULL; bsp = bsp->next) |
3100 | { | |
f431efe5 | 3101 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3102 | return bsp; |
3103 | } | |
c906108c SS |
3104 | return NULL; |
3105 | } | |
3106 | ||
4a64f543 MS |
3107 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3108 | stopped at. *BSP upon return is a bpstat which points to the | |
3109 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3110 | good for anything but further calls to bpstat_num). | |
3111 | ||
8671a17b PA |
3112 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3113 | Return -1 if stopped at a breakpoint that has been deleted since | |
3114 | we set it. | |
3115 | Return 1 otherwise. */ | |
c906108c SS |
3116 | |
3117 | int | |
8671a17b | 3118 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3119 | { |
3120 | struct breakpoint *b; | |
3121 | ||
3122 | if ((*bsp) == NULL) | |
3123 | return 0; /* No more breakpoint values */ | |
8671a17b | 3124 | |
4a64f543 MS |
3125 | /* We assume we'll never have several bpstats that correspond to a |
3126 | single breakpoint -- otherwise, this function might return the | |
3127 | same number more than once and this will look ugly. */ | |
f431efe5 | 3128 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3129 | *bsp = (*bsp)->next; |
3130 | if (b == NULL) | |
3131 | return -1; /* breakpoint that's been deleted since */ | |
3132 | ||
3133 | *num = b->number; /* We have its number */ | |
3134 | return 1; | |
c906108c SS |
3135 | } |
3136 | ||
3137 | /* Modify BS so that the actions will not be performed. */ | |
3138 | ||
3139 | void | |
fba45db2 | 3140 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3141 | { |
3142 | for (; bs != NULL; bs = bs->next) | |
3143 | { | |
9add0f1b | 3144 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3145 | bs->commands_left = NULL; |
c906108c SS |
3146 | if (bs->old_val != NULL) |
3147 | { | |
3148 | value_free (bs->old_val); | |
3149 | bs->old_val = NULL; | |
3150 | } | |
3151 | } | |
3152 | } | |
3153 | ||
f3b1572e PA |
3154 | /* Called when a command is about to proceed the inferior. */ |
3155 | ||
3156 | static void | |
3157 | breakpoint_about_to_proceed (void) | |
3158 | { | |
3159 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3160 | { | |
3161 | struct thread_info *tp = inferior_thread (); | |
3162 | ||
3163 | /* Allow inferior function calls in breakpoint commands to not | |
3164 | interrupt the command list. When the call finishes | |
3165 | successfully, the inferior will be standing at the same | |
3166 | breakpoint as if nothing happened. */ | |
16c381f0 | 3167 | if (tp->control.in_infcall) |
f3b1572e PA |
3168 | return; |
3169 | } | |
3170 | ||
3171 | breakpoint_proceeded = 1; | |
3172 | } | |
3173 | ||
4a64f543 MS |
3174 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3175 | command. */ | |
c906108c | 3176 | static void |
4efb68b1 | 3177 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3178 | { |
3179 | executing_breakpoint_commands = 0; | |
3180 | } | |
3181 | ||
4a64f543 MS |
3182 | /* Execute all the commands associated with all the breakpoints at |
3183 | this location. Any of these commands could cause the process to | |
3184 | proceed beyond this point, etc. We look out for such changes by | |
3185 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3186 | |
347bddb7 PA |
3187 | Returns true if a breakpoint command resumed the inferior. In that |
3188 | case, it is the caller's responsibility to recall it again with the | |
3189 | bpstat of the current thread. */ | |
3190 | ||
3191 | static int | |
3192 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3193 | { |
3194 | bpstat bs; | |
3195 | struct cleanup *old_chain; | |
347bddb7 | 3196 | int again = 0; |
c906108c SS |
3197 | |
3198 | /* Avoid endless recursion if a `source' command is contained | |
3199 | in bs->commands. */ | |
3200 | if (executing_breakpoint_commands) | |
347bddb7 | 3201 | return 0; |
c906108c SS |
3202 | |
3203 | executing_breakpoint_commands = 1; | |
3204 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3205 | ||
4a64f543 | 3206 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3207 | bs = *bsp; |
3208 | ||
3209 | breakpoint_proceeded = 0; | |
3210 | for (; bs != NULL; bs = bs->next) | |
3211 | { | |
9add0f1b | 3212 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3213 | struct command_line *cmd; |
3214 | struct cleanup *this_cmd_tree_chain; | |
3215 | ||
3216 | /* Take ownership of the BSP's command tree, if it has one. | |
3217 | ||
3218 | The command tree could legitimately contain commands like | |
3219 | 'step' and 'next', which call clear_proceed_status, which | |
3220 | frees stop_bpstat's command tree. To make sure this doesn't | |
3221 | free the tree we're executing out from under us, we need to | |
3222 | take ownership of the tree ourselves. Since a given bpstat's | |
3223 | commands are only executed once, we don't need to copy it; we | |
3224 | can clear the pointer in the bpstat, and make sure we free | |
3225 | the tree when we're done. */ | |
9add0f1b TT |
3226 | ccmd = bs->commands; |
3227 | bs->commands = NULL; | |
3228 | this_cmd_tree_chain | |
3229 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3230 | cmd = bs->commands_left; | |
3231 | bs->commands_left = NULL; | |
6c50ab1c | 3232 | |
c906108c SS |
3233 | while (cmd != NULL) |
3234 | { | |
3235 | execute_control_command (cmd); | |
3236 | ||
3237 | if (breakpoint_proceeded) | |
3238 | break; | |
3239 | else | |
3240 | cmd = cmd->next; | |
3241 | } | |
6c50ab1c JB |
3242 | |
3243 | /* We can free this command tree now. */ | |
3244 | do_cleanups (this_cmd_tree_chain); | |
3245 | ||
c906108c | 3246 | if (breakpoint_proceeded) |
32c1e744 VP |
3247 | { |
3248 | if (target_can_async_p ()) | |
347bddb7 PA |
3249 | /* If we are in async mode, then the target might be still |
3250 | running, not stopped at any breakpoint, so nothing for | |
3251 | us to do here -- just return to the event loop. */ | |
3252 | ; | |
32c1e744 VP |
3253 | else |
3254 | /* In sync mode, when execute_control_command returns | |
3255 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3256 | Breakpoint commands for that stop were not run, since |
3257 | execute_command does not run breakpoint commands -- | |
3258 | only command_line_handler does, but that one is not | |
3259 | involved in execution of breakpoint commands. So, we | |
3260 | can now execute breakpoint commands. It should be | |
3261 | noted that making execute_command do bpstat actions is | |
3262 | not an option -- in this case we'll have recursive | |
3263 | invocation of bpstat for each breakpoint with a | |
3264 | command, and can easily blow up GDB stack. Instead, we | |
3265 | return true, which will trigger the caller to recall us | |
3266 | with the new stop_bpstat. */ | |
3267 | again = 1; | |
3268 | break; | |
32c1e744 | 3269 | } |
c906108c | 3270 | } |
c2b8ed2c | 3271 | do_cleanups (old_chain); |
347bddb7 PA |
3272 | return again; |
3273 | } | |
3274 | ||
3275 | void | |
3276 | bpstat_do_actions (void) | |
3277 | { | |
3278 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3279 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3280 | && target_has_execution | |
3281 | && !is_exited (inferior_ptid) | |
3282 | && !is_executing (inferior_ptid)) | |
3283 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3284 | and only return when it is stopped at the next breakpoint, we | |
3285 | keep doing breakpoint actions until it returns false to | |
3286 | indicate the inferior was not resumed. */ | |
16c381f0 | 3287 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3288 | break; |
c906108c SS |
3289 | } |
3290 | ||
fa4727a6 DJ |
3291 | /* Print out the (old or new) value associated with a watchpoint. */ |
3292 | ||
3293 | static void | |
3294 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3295 | { | |
3296 | if (val == NULL) | |
3297 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3298 | else | |
79a45b7d TT |
3299 | { |
3300 | struct value_print_options opts; | |
3301 | get_user_print_options (&opts); | |
3302 | value_print (val, stream, &opts); | |
3303 | } | |
fa4727a6 DJ |
3304 | } |
3305 | ||
e514a9d6 | 3306 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3307 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3308 | by having it set different print_it values. |
3309 | ||
3310 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3311 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3312 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3313 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3314 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3315 | |
3316 | Return values from this routine (ultimately used by bpstat_print() | |
3317 | and normal_stop() to decide what to do): | |
3318 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3319 | don't print anything else. | |
3320 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3321 | that something to be followed by a location. | |
3322 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3323 | that something to be followed by a location. | |
3324 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3325 | analysis. */ | |
c906108c | 3326 | |
917317f4 | 3327 | static enum print_stop_action |
fba45db2 | 3328 | print_it_typical (bpstat bs) |
c906108c | 3329 | { |
f7545552 | 3330 | struct cleanup *old_chain; |
4f8d1dc6 | 3331 | struct breakpoint *b; |
89f9893c | 3332 | const struct bp_location *bl; |
8b93c638 | 3333 | struct ui_stream *stb; |
f7545552 TT |
3334 | int bp_temp = 0; |
3335 | enum print_stop_action result; | |
3336 | ||
f431efe5 PA |
3337 | gdb_assert (bs->bp_location_at != NULL); |
3338 | ||
3339 | bl = bs->bp_location_at; | |
3340 | b = bs->breakpoint_at; | |
c906108c | 3341 | |
f7545552 TT |
3342 | stb = ui_out_stream_new (uiout); |
3343 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3344 | ||
4f8d1dc6 | 3345 | switch (b->type) |
c906108c | 3346 | { |
e514a9d6 JM |
3347 | case bp_breakpoint: |
3348 | case bp_hardware_breakpoint: | |
f431efe5 | 3349 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3350 | if (bl->address != bl->requested_address) |
3351 | breakpoint_adjustment_warning (bl->requested_address, | |
3352 | bl->address, | |
4f8d1dc6 VP |
3353 | b->number, 1); |
3354 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3355 | if (bp_temp) |
3356 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3357 | else | |
3358 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3359 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3360 | { |
3361 | ui_out_field_string (uiout, "reason", | |
3362 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3363 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3364 | } | |
4f8d1dc6 | 3365 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3366 | ui_out_text (uiout, ", "); |
f7545552 | 3367 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3368 | break; |
3369 | ||
3370 | case bp_shlib_event: | |
917317f4 JM |
3371 | /* Did we stop because the user set the stop_on_solib_events |
3372 | variable? (If so, we report this as a generic, "Stopped due | |
3373 | to shlib event" message.) */ | |
a3f17187 | 3374 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3375 | result = PRINT_NOTHING; |
e514a9d6 JM |
3376 | break; |
3377 | ||
c4093a6a | 3378 | case bp_thread_event: |
4a64f543 | 3379 | /* Not sure how we will get here. |
c4093a6a | 3380 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3381 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3382 | result = PRINT_NOTHING; |
c4093a6a JM |
3383 | break; |
3384 | ||
1900040c | 3385 | case bp_overlay_event: |
4a64f543 | 3386 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3387 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3388 | result = PRINT_NOTHING; |
1900040c MS |
3389 | break; |
3390 | ||
0fd8e87f UW |
3391 | case bp_longjmp_master: |
3392 | /* These should never be enabled. */ | |
3393 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3394 | result = PRINT_NOTHING; | |
3395 | break; | |
3396 | ||
aa7d318d TT |
3397 | case bp_std_terminate_master: |
3398 | /* These should never be enabled. */ | |
3e43a32a MS |
3399 | printf_filtered (_("std::terminate Master Breakpoint: " |
3400 | "gdb should not stop!\n")); | |
aa7d318d TT |
3401 | result = PRINT_NOTHING; |
3402 | break; | |
3403 | ||
186c406b TT |
3404 | case bp_exception_master: |
3405 | /* These should never be enabled. */ | |
3e43a32a MS |
3406 | printf_filtered (_("Exception Master Breakpoint: " |
3407 | "gdb should not stop!\n")); | |
186c406b TT |
3408 | result = PRINT_NOTHING; |
3409 | break; | |
3410 | ||
e514a9d6 JM |
3411 | case bp_watchpoint: |
3412 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3413 | annotate_watchpoint (b->number); |
3414 | if (ui_out_is_mi_like_p (uiout)) | |
3415 | ui_out_field_string | |
3416 | (uiout, "reason", | |
3417 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3418 | mention (b); | |
f7545552 | 3419 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3420 | ui_out_text (uiout, "\nOld value = "); |
3421 | watchpoint_value_print (bs->old_val, stb->stream); | |
3422 | ui_out_field_stream (uiout, "old", stb); | |
3423 | ui_out_text (uiout, "\nNew value = "); | |
3424 | watchpoint_value_print (b->val, stb->stream); | |
3425 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3426 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3427 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3428 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3429 | break; |
3430 | ||
3431 | case bp_read_watchpoint: | |
9dc5e2a9 | 3432 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3433 | ui_out_field_string |
3434 | (uiout, "reason", | |
3435 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3436 | mention (b); |
f7545552 | 3437 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3438 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3439 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3440 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3441 | ui_out_text (uiout, "\n"); |
f7545552 | 3442 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3443 | break; |
3444 | ||
3445 | case bp_access_watchpoint: | |
fa4727a6 | 3446 | if (bs->old_val != NULL) |
8b93c638 | 3447 | { |
4f8d1dc6 | 3448 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3449 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3450 | ui_out_field_string |
3451 | (uiout, "reason", | |
3452 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3453 | mention (b); |
f7545552 | 3454 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3455 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3456 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3457 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3458 | ui_out_text (uiout, "\nNew value = "); |
3459 | } | |
3460 | else | |
3461 | { | |
4f8d1dc6 | 3462 | mention (b); |
9dc5e2a9 | 3463 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3464 | ui_out_field_string |
3465 | (uiout, "reason", | |
3466 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3467 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3468 | ui_out_text (uiout, "\nValue = "); |
3469 | } | |
fa4727a6 | 3470 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3471 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3472 | ui_out_text (uiout, "\n"); |
f7545552 | 3473 | result = PRINT_UNKNOWN; |
e514a9d6 | 3474 | break; |
4ce44c66 | 3475 | |
e514a9d6 | 3476 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3477 | here. */ |
e514a9d6 | 3478 | |
11cf8741 | 3479 | case bp_finish: |
9dc5e2a9 | 3480 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3481 | ui_out_field_string |
3482 | (uiout, "reason", | |
3483 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3484 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3485 | break; |
3486 | ||
e514a9d6 | 3487 | case bp_until: |
9dc5e2a9 | 3488 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3489 | ui_out_field_string |
3490 | (uiout, "reason", | |
3491 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3492 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3493 | break; |
3494 | ||
c2d11a7d | 3495 | case bp_none: |
e514a9d6 JM |
3496 | case bp_longjmp: |
3497 | case bp_longjmp_resume: | |
186c406b TT |
3498 | case bp_exception: |
3499 | case bp_exception_resume: | |
e514a9d6 | 3500 | case bp_step_resume: |
e514a9d6 JM |
3501 | case bp_watchpoint_scope: |
3502 | case bp_call_dummy: | |
aa7d318d | 3503 | case bp_std_terminate: |
1042e4c0 | 3504 | case bp_tracepoint: |
7a697b8d | 3505 | case bp_fast_tracepoint: |
4efc6507 | 3506 | case bp_jit_event: |
0e30163f JK |
3507 | case bp_gnu_ifunc_resolver: |
3508 | case bp_gnu_ifunc_resolver_return: | |
e514a9d6 | 3509 | default: |
f7545552 TT |
3510 | result = PRINT_UNKNOWN; |
3511 | break; | |
e514a9d6 | 3512 | } |
f7545552 TT |
3513 | |
3514 | do_cleanups (old_chain); | |
3515 | return result; | |
e514a9d6 JM |
3516 | } |
3517 | ||
3518 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3519 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3520 | 'print_it' in the bpstat structure. Under some circumstances we |
3521 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3522 | normal_stop(). */ |
e514a9d6 JM |
3523 | |
3524 | static enum print_stop_action | |
3525 | print_bp_stop_message (bpstat bs) | |
3526 | { | |
3527 | switch (bs->print_it) | |
3528 | { | |
3529 | case print_it_noop: | |
4a64f543 | 3530 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3531 | return PRINT_UNKNOWN; |
3532 | break; | |
3533 | ||
3534 | case print_it_done: | |
3535 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3536 | relevant messages. */ |
e514a9d6 JM |
3537 | return PRINT_SRC_AND_LOC; |
3538 | break; | |
3539 | ||
3540 | case print_it_normal: | |
4f8d1dc6 | 3541 | { |
f431efe5 PA |
3542 | struct breakpoint *b = bs->breakpoint_at; |
3543 | ||
1a6a67de TJB |
3544 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3545 | which has since been deleted. */ | |
3546 | if (b == NULL) | |
3547 | return PRINT_UNKNOWN; | |
3548 | ||
4f8d1dc6 VP |
3549 | /* Normal case. Call the breakpoint's print_it method, or |
3550 | print_it_typical. */ | |
1a6a67de | 3551 | if (b->ops != NULL && b->ops->print_it != NULL) |
4f8d1dc6 VP |
3552 | return b->ops->print_it (b); |
3553 | else | |
3554 | return print_it_typical (bs); | |
3555 | } | |
3556 | break; | |
3086aeae | 3557 | |
e514a9d6 | 3558 | default: |
8e65ff28 | 3559 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3560 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3561 | break; |
c906108c | 3562 | } |
c906108c SS |
3563 | } |
3564 | ||
e514a9d6 JM |
3565 | /* Print a message indicating what happened. This is called from |
3566 | normal_stop(). The input to this routine is the head of the bpstat | |
3567 | list - a list of the eventpoints that caused this stop. This | |
3568 | routine calls the generic print routine for printing a message | |
3569 | about reasons for stopping. This will print (for example) the | |
3570 | "Breakpoint n," part of the output. The return value of this | |
3571 | routine is one of: | |
c906108c | 3572 | |
4a64f543 | 3573 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3574 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3575 | code to print the location. An example is |
c5aa993b JM |
3576 | "Breakpoint 1, " which should be followed by |
3577 | the location. | |
917317f4 | 3578 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3579 | to also print the location part of the message. |
3580 | An example is the catch/throw messages, which | |
4a64f543 | 3581 | don't require a location appended to the end. |
917317f4 | 3582 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3583 | further info to be printed. */ |
c906108c | 3584 | |
917317f4 | 3585 | enum print_stop_action |
fba45db2 | 3586 | bpstat_print (bpstat bs) |
c906108c SS |
3587 | { |
3588 | int val; | |
c5aa993b | 3589 | |
c906108c | 3590 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3591 | (Currently all watchpoints go on the bpstat whether hit or not. |
3592 | That probably could (should) be changed, provided care is taken | |
c906108c | 3593 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3594 | for (; bs; bs = bs->next) |
3595 | { | |
3596 | val = print_bp_stop_message (bs); | |
3597 | if (val == PRINT_SRC_ONLY | |
3598 | || val == PRINT_SRC_AND_LOC | |
3599 | || val == PRINT_NOTHING) | |
3600 | return val; | |
3601 | } | |
c906108c | 3602 | |
e514a9d6 | 3603 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3604 | with and nothing was printed. */ |
917317f4 | 3605 | return PRINT_UNKNOWN; |
c906108c SS |
3606 | } |
3607 | ||
4a64f543 MS |
3608 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3609 | used inside a catch_errors to evaluate the breakpoint condition. | |
3610 | The argument is a "struct expression *" that has been cast to a | |
3611 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3612 | |
3613 | static int | |
4efb68b1 | 3614 | breakpoint_cond_eval (void *exp) |
c906108c | 3615 | { |
278cd55f | 3616 | struct value *mark = value_mark (); |
c5aa993b | 3617 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3618 | |
c906108c SS |
3619 | value_free_to_mark (mark); |
3620 | return i; | |
3621 | } | |
3622 | ||
5760d0ab | 3623 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3624 | |
3625 | static bpstat | |
5760d0ab | 3626 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3627 | { |
3628 | bpstat bs; | |
3629 | ||
3630 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3631 | bs->next = NULL; |
3632 | **bs_link_pointer = bs; | |
3633 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3634 | bs->breakpoint_at = bl->owner; |
3635 | bs->bp_location_at = bl; | |
3636 | incref_bp_location (bl); | |
c906108c SS |
3637 | /* If the condition is false, etc., don't do the commands. */ |
3638 | bs->commands = NULL; | |
9add0f1b | 3639 | bs->commands_left = NULL; |
c906108c SS |
3640 | bs->old_val = NULL; |
3641 | bs->print_it = print_it_normal; | |
3642 | return bs; | |
3643 | } | |
3644 | \f | |
d983da9c DJ |
3645 | /* The target has stopped with waitstatus WS. Check if any hardware |
3646 | watchpoints have triggered, according to the target. */ | |
3647 | ||
3648 | int | |
3649 | watchpoints_triggered (struct target_waitstatus *ws) | |
3650 | { | |
d92524f1 | 3651 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3652 | CORE_ADDR addr; |
3653 | struct breakpoint *b; | |
3654 | ||
3655 | if (!stopped_by_watchpoint) | |
3656 | { | |
3657 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3658 | as not triggered. */ | |
3659 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3660 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3661 | b->watchpoint_triggered = watch_triggered_no; |
3662 | ||
3663 | return 0; | |
3664 | } | |
3665 | ||
3666 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3667 | { | |
3668 | /* We were stopped by a watchpoint, but we don't know where. | |
3669 | Mark all watchpoints as unknown. */ | |
3670 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3671 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3672 | b->watchpoint_triggered = watch_triggered_unknown; |
3673 | ||
3674 | return stopped_by_watchpoint; | |
3675 | } | |
3676 | ||
3677 | /* The target could report the data address. Mark watchpoints | |
3678 | affected by this data address as triggered, and all others as not | |
3679 | triggered. */ | |
3680 | ||
3681 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3682 | if (is_hardware_watchpoint (b)) |
d983da9c | 3683 | { |
a5606eee | 3684 | struct bp_location *loc; |
d983da9c DJ |
3685 | |
3686 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3687 | for (loc = b->loc; loc; loc = loc->next) |
3688 | /* Exact match not required. Within range is | |
3689 | sufficient. */ | |
5009afc5 AS |
3690 | if (target_watchpoint_addr_within_range (¤t_target, |
3691 | addr, loc->address, | |
3692 | loc->length)) | |
a5606eee VP |
3693 | { |
3694 | b->watchpoint_triggered = watch_triggered_yes; | |
3695 | break; | |
3696 | } | |
d983da9c DJ |
3697 | } |
3698 | ||
3699 | return 1; | |
3700 | } | |
3701 | ||
c906108c SS |
3702 | /* Possible return values for watchpoint_check (this can't be an enum |
3703 | because of check_errors). */ | |
3704 | /* The watchpoint has been deleted. */ | |
3705 | #define WP_DELETED 1 | |
3706 | /* The value has changed. */ | |
3707 | #define WP_VALUE_CHANGED 2 | |
3708 | /* The value has not changed. */ | |
3709 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3710 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3711 | #define WP_IGNORE 4 | |
c906108c SS |
3712 | |
3713 | #define BP_TEMPFLAG 1 | |
3714 | #define BP_HARDWAREFLAG 2 | |
3715 | ||
4a64f543 MS |
3716 | /* Evaluate watchpoint condition expression and check if its value |
3717 | changed. | |
553e4c11 JB |
3718 | |
3719 | P should be a pointer to struct bpstat, but is defined as a void * | |
3720 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3721 | |
3722 | static int | |
4efb68b1 | 3723 | watchpoint_check (void *p) |
c906108c SS |
3724 | { |
3725 | bpstat bs = (bpstat) p; | |
3726 | struct breakpoint *b; | |
3727 | struct frame_info *fr; | |
3728 | int within_current_scope; | |
3729 | ||
f431efe5 | 3730 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3731 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3732 | b = bs->breakpoint_at; |
c906108c | 3733 | |
d0fb5eae JK |
3734 | gdb_assert (is_watchpoint (b)); |
3735 | ||
f6bc2008 PA |
3736 | /* If this is a local watchpoint, we only want to check if the |
3737 | watchpoint frame is in scope if the current thread is the thread | |
3738 | that was used to create the watchpoint. */ | |
3739 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3740 | return WP_IGNORE; |
f6bc2008 | 3741 | |
c906108c SS |
3742 | if (b->exp_valid_block == NULL) |
3743 | within_current_scope = 1; | |
3744 | else | |
3745 | { | |
edb3359d DJ |
3746 | struct frame_info *frame = get_current_frame (); |
3747 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3748 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3749 | ||
4a64f543 MS |
3750 | /* in_function_epilogue_p() returns a non-zero value if we're |
3751 | still in the function but the stack frame has already been | |
3752 | invalidated. Since we can't rely on the values of local | |
3753 | variables after the stack has been destroyed, we are treating | |
3754 | the watchpoint in that state as `not changed' without further | |
3755 | checking. Don't mark watchpoints as changed if the current | |
3756 | frame is in an epilogue - even if they are in some other | |
3757 | frame, our view of the stack is likely to be wrong and | |
3758 | frame_find_by_id could error out. */ | |
a0f49112 | 3759 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3760 | return WP_IGNORE; |
a0f49112 | 3761 | |
101dcfbe | 3762 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3763 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3764 | |
3765 | /* If we've gotten confused in the unwinder, we might have | |
3766 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3767 | if (within_current_scope) |
3768 | { | |
3769 | struct symbol *function; | |
3770 | ||
3771 | function = get_frame_function (fr); | |
3772 | if (function == NULL | |
3773 | || !contained_in (b->exp_valid_block, | |
3774 | SYMBOL_BLOCK_VALUE (function))) | |
3775 | within_current_scope = 0; | |
3776 | } | |
69fbadd5 | 3777 | |
edb3359d | 3778 | if (within_current_scope) |
c906108c SS |
3779 | /* If we end up stopping, the current frame will get selected |
3780 | in normal_stop. So this call to select_frame won't affect | |
3781 | the user. */ | |
0f7d239c | 3782 | select_frame (fr); |
c906108c | 3783 | } |
c5aa993b | 3784 | |
c906108c SS |
3785 | if (within_current_scope) |
3786 | { | |
4a64f543 MS |
3787 | /* We use value_{,free_to_}mark because it could be a *long* |
3788 | time before we return to the command level and call | |
3789 | free_all_values. We can't call free_all_values because we | |
3790 | might be in the middle of evaluating a function call. */ | |
c906108c | 3791 | |
0cf6dd15 | 3792 | int pc = 0; |
278cd55f | 3793 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3794 | struct value *new_val; |
3795 | ||
0cf6dd15 | 3796 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3797 | |
4a64f543 MS |
3798 | /* We use value_equal_contents instead of value_equal because |
3799 | the latter coerces an array to a pointer, thus comparing just | |
3800 | the address of the array instead of its contents. This is | |
3801 | not what we want. */ | |
fa4727a6 | 3802 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3803 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3804 | { |
fa4727a6 DJ |
3805 | if (new_val != NULL) |
3806 | { | |
3807 | release_value (new_val); | |
3808 | value_free_to_mark (mark); | |
3809 | } | |
c906108c SS |
3810 | bs->old_val = b->val; |
3811 | b->val = new_val; | |
fa4727a6 | 3812 | b->val_valid = 1; |
c906108c SS |
3813 | return WP_VALUE_CHANGED; |
3814 | } | |
3815 | else | |
3816 | { | |
60e1c644 | 3817 | /* Nothing changed. */ |
c906108c | 3818 | value_free_to_mark (mark); |
c906108c SS |
3819 | return WP_VALUE_NOT_CHANGED; |
3820 | } | |
3821 | } | |
3822 | else | |
3823 | { | |
3824 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3825 | if we temporarily ignored the watchpoint, then when |
3826 | we reenter the block in which it is valid it contains | |
3827 | garbage (in the case of a function, it may have two | |
3828 | garbage values, one before and one after the prologue). | |
3829 | So we can't even detect the first assignment to it and | |
3830 | watch after that (since the garbage may or may not equal | |
3831 | the first value assigned). */ | |
4ce44c66 JM |
3832 | /* We print all the stop information in print_it_typical(), but |
3833 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3834 | will be deleted already. So we have no choice but print the |
3835 | information here. */ | |
9dc5e2a9 | 3836 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3837 | ui_out_field_string |
3838 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3839 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3840 | ui_out_field_int (uiout, "wpnum", b->number); |
3e43a32a MS |
3841 | ui_out_text (uiout, |
3842 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3843 | which its expression is valid.\n"); |
4ce44c66 | 3844 | |
d0fb5eae | 3845 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3846 | |
3847 | return WP_DELETED; | |
3848 | } | |
3849 | } | |
3850 | ||
18a18393 VP |
3851 | /* Return true if it looks like target has stopped due to hitting |
3852 | breakpoint location BL. This function does not check if we | |
3853 | should stop, only if BL explains the stop. */ | |
3854 | static int | |
6c95b8df PA |
3855 | bpstat_check_location (const struct bp_location *bl, |
3856 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3857 | { |
3858 | struct breakpoint *b = bl->owner; | |
3859 | ||
2bdf28a0 JK |
3860 | /* BL is from existing struct breakpoint. */ |
3861 | gdb_assert (b != NULL); | |
3862 | ||
e8595ef6 SS |
3863 | /* By definition, the inferior does not report stops at |
3864 | tracepoints. */ | |
d77f58be | 3865 | if (is_tracepoint (b)) |
e8595ef6 SS |
3866 | return 0; |
3867 | ||
cc60f2e3 | 3868 | if (!is_watchpoint (b) |
18a18393 | 3869 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3870 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3871 | { |
6c95b8df PA |
3872 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3873 | aspace, bp_addr)) | |
18a18393 VP |
3874 | return 0; |
3875 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3876 | && section_is_overlay (bl->section) |
18a18393 VP |
3877 | && !section_is_mapped (bl->section)) |
3878 | return 0; | |
3879 | } | |
cc60f2e3 | 3880 | |
18a18393 VP |
3881 | /* Continuable hardware watchpoints are treated as non-existent if the |
3882 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3883 | some data address). Otherwise gdb won't stop on a break instruction | |
3884 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3885 | been defined. Also skip watchpoints which we know did not trigger | |
3886 | (did not match the data address). */ | |
cc60f2e3 PA |
3887 | |
3888 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3889 | && b->watchpoint_triggered == watch_triggered_no) |
3890 | return 0; | |
3891 | ||
3892 | if (b->type == bp_hardware_breakpoint) | |
3893 | { | |
3894 | if (bl->address != bp_addr) | |
3895 | return 0; | |
3896 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3897 | && section_is_overlay (bl->section) |
18a18393 VP |
3898 | && !section_is_mapped (bl->section)) |
3899 | return 0; | |
3900 | } | |
ce78b96d | 3901 | |
ce78b96d JB |
3902 | if (b->type == bp_catchpoint) |
3903 | { | |
3904 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3905 | if (!b->ops->breakpoint_hit (b)) | |
3906 | return 0; | |
3907 | } | |
3908 | ||
18a18393 VP |
3909 | return 1; |
3910 | } | |
3911 | ||
3912 | /* If BS refers to a watchpoint, determine if the watched values | |
3913 | has actually changed, and we should stop. If not, set BS->stop | |
3914 | to 0. */ | |
3915 | static void | |
3916 | bpstat_check_watchpoint (bpstat bs) | |
3917 | { | |
2bdf28a0 JK |
3918 | const struct bp_location *bl; |
3919 | struct breakpoint *b; | |
3920 | ||
3921 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3922 | bl = bs->bp_location_at; |
2bdf28a0 | 3923 | gdb_assert (bl != NULL); |
f431efe5 | 3924 | b = bs->breakpoint_at; |
2bdf28a0 | 3925 | gdb_assert (b != NULL); |
18a18393 | 3926 | |
cc60f2e3 | 3927 | if (is_watchpoint (b)) |
18a18393 | 3928 | { |
18a18393 VP |
3929 | int must_check_value = 0; |
3930 | ||
3931 | if (b->type == bp_watchpoint) | |
3932 | /* For a software watchpoint, we must always check the | |
3933 | watched value. */ | |
3934 | must_check_value = 1; | |
3935 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3936 | /* We have a hardware watchpoint (read, write, or access) | |
3937 | and the target earlier reported an address watched by | |
3938 | this watchpoint. */ | |
3939 | must_check_value = 1; | |
3940 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3941 | && b->type == bp_hardware_watchpoint) | |
3942 | /* We were stopped by a hardware watchpoint, but the target could | |
3943 | not report the data address. We must check the watchpoint's | |
3944 | value. Access and read watchpoints are out of luck; without | |
3945 | a data address, we can't figure it out. */ | |
3946 | must_check_value = 1; | |
3947 | ||
3948 | if (must_check_value) | |
3949 | { | |
3e43a32a MS |
3950 | char *message |
3951 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3952 | b->number); | |
18a18393 VP |
3953 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3954 | int e = catch_errors (watchpoint_check, bs, message, | |
3955 | RETURN_MASK_ALL); | |
3956 | do_cleanups (cleanups); | |
3957 | switch (e) | |
3958 | { | |
3959 | case WP_DELETED: | |
3960 | /* We've already printed what needs to be printed. */ | |
3961 | bs->print_it = print_it_done; | |
3962 | /* Stop. */ | |
3963 | break; | |
60e1c644 PA |
3964 | case WP_IGNORE: |
3965 | bs->print_it = print_it_noop; | |
3966 | bs->stop = 0; | |
3967 | break; | |
18a18393 VP |
3968 | case WP_VALUE_CHANGED: |
3969 | if (b->type == bp_read_watchpoint) | |
3970 | { | |
85d721b8 PA |
3971 | /* There are two cases to consider here: |
3972 | ||
4a64f543 | 3973 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3974 | In that case, trust the target, and always report |
3975 | the watchpoint hit to the user. Even though | |
3976 | reads don't cause value changes, the value may | |
3977 | have changed since the last time it was read, and | |
3978 | since we're not trapping writes, we will not see | |
3979 | those, and as such we should ignore our notion of | |
3980 | old value. | |
3981 | ||
4a64f543 | 3982 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3983 | reads and writes. There are two ways this may |
3984 | happen: | |
3985 | ||
4a64f543 | 3986 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3987 | reads only, but can break on accesses (reads or |
3988 | writes), such as e.g., x86. We detect this case | |
3989 | at the time we try to insert read watchpoints. | |
3990 | ||
4a64f543 | 3991 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3992 | watchpoints, but, the user set an access or write |
3993 | watchpoint watching the same memory as this read | |
3994 | watchpoint. | |
3995 | ||
3996 | If we're watching memory writes as well as reads, | |
3997 | ignore watchpoint hits when we find that the | |
3998 | value hasn't changed, as reads don't cause | |
3999 | changes. This still gives false positives when | |
4000 | the program writes the same value to memory as | |
4001 | what there was already in memory (we will confuse | |
4002 | it for a read), but it's much better than | |
4003 | nothing. */ | |
4004 | ||
4005 | int other_write_watchpoint = 0; | |
4006 | ||
4007 | if (bl->watchpoint_type == hw_read) | |
4008 | { | |
4009 | struct breakpoint *other_b; | |
4010 | ||
4011 | ALL_BREAKPOINTS (other_b) | |
4012 | if ((other_b->type == bp_hardware_watchpoint | |
4013 | || other_b->type == bp_access_watchpoint) | |
4014 | && (other_b->watchpoint_triggered | |
4015 | == watch_triggered_yes)) | |
4016 | { | |
4017 | other_write_watchpoint = 1; | |
4018 | break; | |
4019 | } | |
4020 | } | |
4021 | ||
4022 | if (other_write_watchpoint | |
4023 | || bl->watchpoint_type == hw_access) | |
4024 | { | |
4025 | /* We're watching the same memory for writes, | |
4026 | and the value changed since the last time we | |
4027 | updated it, so this trap must be for a write. | |
4028 | Ignore it. */ | |
4029 | bs->print_it = print_it_noop; | |
4030 | bs->stop = 0; | |
4031 | } | |
18a18393 VP |
4032 | } |
4033 | break; | |
4034 | case WP_VALUE_NOT_CHANGED: | |
4035 | if (b->type == bp_hardware_watchpoint | |
4036 | || b->type == bp_watchpoint) | |
4037 | { | |
4038 | /* Don't stop: write watchpoints shouldn't fire if | |
4039 | the value hasn't changed. */ | |
4040 | bs->print_it = print_it_noop; | |
4041 | bs->stop = 0; | |
4042 | } | |
4043 | /* Stop. */ | |
4044 | break; | |
4045 | default: | |
4046 | /* Can't happen. */ | |
4047 | case 0: | |
4048 | /* Error from catch_errors. */ | |
4049 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
d0fb5eae | 4050 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4051 | /* We've already printed what needs to be printed. */ |
4052 | bs->print_it = print_it_done; | |
4053 | break; | |
4054 | } | |
4055 | } | |
4056 | else /* must_check_value == 0 */ | |
4057 | { | |
4058 | /* This is a case where some watchpoint(s) triggered, but | |
4059 | not at the address of this watchpoint, or else no | |
4060 | watchpoint triggered after all. So don't print | |
4061 | anything for this watchpoint. */ | |
4062 | bs->print_it = print_it_noop; | |
4063 | bs->stop = 0; | |
4064 | } | |
4065 | } | |
4066 | } | |
4067 | ||
4068 | ||
4069 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4070 | of breakpoint referred to by BS. If we should not stop for this | |
4071 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4072 | |
18a18393 VP |
4073 | static void |
4074 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4075 | { | |
4076 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4077 | const struct bp_location *bl; |
4078 | struct breakpoint *b; | |
4079 | ||
4080 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4081 | bl = bs->bp_location_at; |
2bdf28a0 | 4082 | gdb_assert (bl != NULL); |
f431efe5 | 4083 | b = bs->breakpoint_at; |
2bdf28a0 | 4084 | gdb_assert (b != NULL); |
18a18393 VP |
4085 | |
4086 | if (frame_id_p (b->frame_id) | |
edb3359d | 4087 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4088 | bs->stop = 0; |
4089 | else if (bs->stop) | |
4090 | { | |
4091 | int value_is_zero = 0; | |
60e1c644 PA |
4092 | struct expression *cond; |
4093 | ||
7371cf6d PM |
4094 | /* Evaluate Python breakpoints that have a "stop" |
4095 | method implemented. */ | |
4096 | if (b->py_bp_object) | |
4097 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4098 | ||
60e1c644 PA |
4099 | if (is_watchpoint (b)) |
4100 | cond = b->cond_exp; | |
4101 | else | |
4102 | cond = bl->cond; | |
4103 | ||
f431efe5 | 4104 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4105 | { |
60e1c644 PA |
4106 | int within_current_scope = 1; |
4107 | ||
c5bc3a77 DJ |
4108 | /* We use value_mark and value_free_to_mark because it could |
4109 | be a long time before we return to the command level and | |
4110 | call free_all_values. We can't call free_all_values | |
4111 | because we might be in the middle of evaluating a | |
4112 | function call. */ | |
4113 | struct value *mark = value_mark (); | |
4114 | ||
edb3359d DJ |
4115 | /* Need to select the frame, with all that implies so that |
4116 | the conditions will have the right context. Because we | |
4117 | use the frame, we will not see an inlined function's | |
4118 | variables when we arrive at a breakpoint at the start | |
4119 | of the inlined function; the current frame will be the | |
4120 | call site. */ | |
60e1c644 PA |
4121 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4122 | select_frame (get_current_frame ()); | |
4123 | else | |
4124 | { | |
4125 | struct frame_info *frame; | |
4126 | ||
4127 | /* For local watchpoint expressions, which particular | |
4128 | instance of a local is being watched matters, so we | |
4129 | keep track of the frame to evaluate the expression | |
4130 | in. To evaluate the condition however, it doesn't | |
4131 | really matter which instantiation of the function | |
4132 | where the condition makes sense triggers the | |
4133 | watchpoint. This allows an expression like "watch | |
4134 | global if q > 10" set in `func', catch writes to | |
4135 | global on all threads that call `func', or catch | |
4136 | writes on all recursive calls of `func' by a single | |
4137 | thread. We simply always evaluate the condition in | |
4138 | the innermost frame that's executing where it makes | |
4139 | sense to evaluate the condition. It seems | |
4140 | intuitive. */ | |
4141 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4142 | if (frame != NULL) | |
4143 | select_frame (frame); | |
4144 | else | |
4145 | within_current_scope = 0; | |
4146 | } | |
4147 | if (within_current_scope) | |
4148 | value_is_zero | |
4149 | = catch_errors (breakpoint_cond_eval, cond, | |
4150 | "Error in testing breakpoint condition:\n", | |
4151 | RETURN_MASK_ALL); | |
4152 | else | |
4153 | { | |
4154 | warning (_("Watchpoint condition cannot be tested " | |
4155 | "in the current scope")); | |
4156 | /* If we failed to set the right context for this | |
4157 | watchpoint, unconditionally report it. */ | |
4158 | value_is_zero = 0; | |
4159 | } | |
4a64f543 | 4160 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4161 | value_free_to_mark (mark); |
18a18393 | 4162 | } |
60e1c644 PA |
4163 | |
4164 | if (cond && value_is_zero) | |
18a18393 VP |
4165 | { |
4166 | bs->stop = 0; | |
4167 | } | |
4168 | else if (b->thread != -1 && b->thread != thread_id) | |
4169 | { | |
4170 | bs->stop = 0; | |
4171 | } | |
4172 | else if (b->ignore_count > 0) | |
4173 | { | |
4174 | b->ignore_count--; | |
4175 | annotate_ignore_count_change (); | |
4176 | bs->stop = 0; | |
4a64f543 | 4177 | /* Increase the hit count even though we don't stop. */ |
18a18393 VP |
4178 | ++(b->hit_count); |
4179 | } | |
4180 | } | |
4181 | } | |
4182 | ||
4183 | ||
9709f61c | 4184 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4185 | BP_ADDR in thread PTID. |
c906108c | 4186 | |
d983da9c | 4187 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4188 | don't understand this stop. Result is a chain of bpstat's such |
4189 | that: | |
c906108c | 4190 | |
c5aa993b | 4191 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4192 | |
c5aa993b | 4193 | if we understand why we stopped, the result is not null. |
c906108c | 4194 | |
c5aa993b JM |
4195 | Each element of the chain refers to a particular breakpoint or |
4196 | watchpoint at which we have stopped. (We may have stopped for | |
4197 | several reasons concurrently.) | |
c906108c | 4198 | |
c5aa993b JM |
4199 | Each element of the chain has valid next, breakpoint_at, |
4200 | commands, FIXME??? fields. */ | |
c906108c SS |
4201 | |
4202 | bpstat | |
6c95b8df PA |
4203 | bpstat_stop_status (struct address_space *aspace, |
4204 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4205 | { |
0d381245 | 4206 | struct breakpoint *b = NULL; |
afe38095 | 4207 | struct bp_location *bl; |
20874c92 | 4208 | struct bp_location *loc; |
5760d0ab JK |
4209 | /* First item of allocated bpstat's. */ |
4210 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4211 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4212 | bpstat bs; |
20874c92 | 4213 | int ix; |
429374b8 | 4214 | int need_remove_insert; |
f431efe5 | 4215 | int removed_any; |
c906108c | 4216 | |
f431efe5 PA |
4217 | /* First, build the bpstat chain with locations that explain a |
4218 | target stop, while being careful to not set the target running, | |
4219 | as that may invalidate locations (in particular watchpoint | |
4220 | locations are recreated). Resuming will happen here with | |
4221 | breakpoint conditions or watchpoint expressions that include | |
4222 | inferior function calls. */ | |
c5aa993b | 4223 | |
429374b8 JK |
4224 | ALL_BREAKPOINTS (b) |
4225 | { | |
4226 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4227 | continue; | |
a5606eee | 4228 | |
429374b8 JK |
4229 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4230 | { | |
4a64f543 MS |
4231 | /* For hardware watchpoints, we look only at the first |
4232 | location. The watchpoint_check function will work on the | |
4233 | entire expression, not the individual locations. For | |
4234 | read watchpoints, the watchpoints_triggered function has | |
4235 | checked all locations already. */ | |
429374b8 JK |
4236 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4237 | break; | |
18a18393 | 4238 | |
429374b8 JK |
4239 | if (bl->shlib_disabled) |
4240 | continue; | |
c5aa993b | 4241 | |
429374b8 JK |
4242 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4243 | continue; | |
c5aa993b | 4244 | |
4a64f543 MS |
4245 | /* Come here if it's a watchpoint, or if the break address |
4246 | matches. */ | |
c5aa993b | 4247 | |
4a64f543 MS |
4248 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4249 | explain stop. */ | |
c5aa993b | 4250 | |
f431efe5 PA |
4251 | /* Assume we stop. Should we find a watchpoint that is not |
4252 | actually triggered, or if the condition of the breakpoint | |
4253 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4254 | bs->stop = 1; |
4255 | bs->print = 1; | |
d983da9c | 4256 | |
f431efe5 PA |
4257 | /* If this is a scope breakpoint, mark the associated |
4258 | watchpoint as triggered so that we will handle the | |
4259 | out-of-scope event. We'll get to the watchpoint next | |
4260 | iteration. */ | |
d0fb5eae | 4261 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
f431efe5 PA |
4262 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; |
4263 | } | |
4264 | } | |
4265 | ||
4266 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4267 | { | |
4268 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, | |
4269 | aspace, bp_addr)) | |
4270 | { | |
5760d0ab | 4271 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4272 | /* For hits of moribund locations, we should just proceed. */ |
4273 | bs->stop = 0; | |
4274 | bs->print = 0; | |
4275 | bs->print_it = print_it_noop; | |
4276 | } | |
4277 | } | |
4278 | ||
f431efe5 PA |
4279 | /* Now go through the locations that caused the target to stop, and |
4280 | check whether we're interested in reporting this stop to higher | |
4281 | layers, or whether we should resume the target transparently. */ | |
4282 | ||
4283 | removed_any = 0; | |
4284 | ||
5760d0ab | 4285 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4286 | { |
4287 | if (!bs->stop) | |
4288 | continue; | |
4289 | ||
4290 | bpstat_check_watchpoint (bs); | |
4291 | if (!bs->stop) | |
4292 | continue; | |
4293 | ||
4294 | b = bs->breakpoint_at; | |
18a18393 | 4295 | |
429374b8 | 4296 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4297 | || b->type == bp_longjmp_master |
186c406b TT |
4298 | || b->type == bp_std_terminate_master |
4299 | || b->type == bp_exception_master) | |
429374b8 JK |
4300 | /* We do not stop for these. */ |
4301 | bs->stop = 0; | |
4302 | else | |
4303 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4304 | |
429374b8 JK |
4305 | if (bs->stop) |
4306 | { | |
4307 | ++(b->hit_count); | |
c906108c | 4308 | |
4a64f543 | 4309 | /* We will stop here. */ |
429374b8 JK |
4310 | if (b->disposition == disp_disable) |
4311 | { | |
4312 | if (b->enable_state != bp_permanent) | |
4313 | b->enable_state = bp_disabled; | |
f431efe5 | 4314 | removed_any = 1; |
429374b8 JK |
4315 | } |
4316 | if (b->silent) | |
4317 | bs->print = 0; | |
4318 | bs->commands = b->commands; | |
9add0f1b TT |
4319 | incref_counted_command_line (bs->commands); |
4320 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4321 | if (bs->commands_left | |
4322 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4323 | || (xdb_commands | |
4324 | && strcmp ("Q", | |
4325 | bs->commands_left->line) == 0))) | |
429374b8 | 4326 | { |
9add0f1b | 4327 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4328 | bs->print = 0; |
4329 | } | |
429374b8 JK |
4330 | } |
4331 | ||
4332 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4333 | if (bs->stop == 0 || bs->print == 0) | |
4334 | bs->print_it = print_it_noop; | |
429374b8 | 4335 | } |
876fa593 | 4336 | |
d983da9c DJ |
4337 | /* If we aren't stopping, the value of some hardware watchpoint may |
4338 | not have changed, but the intermediate memory locations we are | |
4339 | watching may have. Don't bother if we're stopping; this will get | |
4340 | done later. */ | |
d832cb68 | 4341 | need_remove_insert = 0; |
5760d0ab JK |
4342 | if (! bpstat_causes_stop (bs_head)) |
4343 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4344 | if (!bs->stop |
f431efe5 PA |
4345 | && bs->breakpoint_at |
4346 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4347 | { |
4a64f543 | 4348 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4349 | need_remove_insert = 1; |
d983da9c DJ |
4350 | } |
4351 | ||
d832cb68 | 4352 | if (need_remove_insert) |
2d134ed3 | 4353 | update_global_location_list (1); |
f431efe5 PA |
4354 | else if (removed_any) |
4355 | update_global_location_list (0); | |
d832cb68 | 4356 | |
5760d0ab | 4357 | return bs_head; |
c906108c | 4358 | } |
628fe4e4 JK |
4359 | |
4360 | static void | |
4361 | handle_jit_event (void) | |
4362 | { | |
4363 | struct frame_info *frame; | |
4364 | struct gdbarch *gdbarch; | |
4365 | ||
4366 | /* Switch terminal for any messages produced by | |
4367 | breakpoint_re_set. */ | |
4368 | target_terminal_ours_for_output (); | |
4369 | ||
4370 | frame = get_current_frame (); | |
4371 | gdbarch = get_frame_arch (frame); | |
4372 | ||
4373 | jit_event_handler (gdbarch); | |
4374 | ||
4375 | target_terminal_inferior (); | |
4376 | } | |
4377 | ||
4378 | /* Prepare WHAT final decision for infrun. */ | |
4379 | ||
4380 | /* Decide what infrun needs to do with this bpstat. */ | |
4381 | ||
c906108c | 4382 | struct bpstat_what |
0e30163f | 4383 | bpstat_what (bpstat bs_head) |
c906108c | 4384 | { |
c906108c | 4385 | struct bpstat_what retval; |
628fe4e4 JK |
4386 | /* We need to defer calling `solib_add', as adding new symbols |
4387 | resets breakpoints, which in turn deletes breakpoint locations, | |
4388 | and hence may clear unprocessed entries in the BS chain. */ | |
4389 | int shlib_event = 0; | |
4390 | int jit_event = 0; | |
0e30163f | 4391 | bpstat bs; |
c906108c | 4392 | |
628fe4e4 | 4393 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4394 | retval.call_dummy = STOP_NONE; |
186c406b | 4395 | retval.is_longjmp = 0; |
628fe4e4 | 4396 | |
0e30163f | 4397 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4398 | { |
628fe4e4 JK |
4399 | /* Extract this BS's action. After processing each BS, we check |
4400 | if its action overrides all we've seem so far. */ | |
4401 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4402 | enum bptype bptype; | |
4403 | ||
c906108c | 4404 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4405 | { |
4406 | /* I suspect this can happen if it was a momentary | |
4407 | breakpoint which has since been deleted. */ | |
4408 | bptype = bp_none; | |
4409 | } | |
f431efe5 | 4410 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4411 | bptype = bp_none; |
20874c92 | 4412 | else |
f431efe5 | 4413 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4414 | |
4415 | switch (bptype) | |
c906108c SS |
4416 | { |
4417 | case bp_none: | |
628fe4e4 | 4418 | break; |
c906108c SS |
4419 | case bp_breakpoint: |
4420 | case bp_hardware_breakpoint: | |
4421 | case bp_until: | |
4422 | case bp_finish: | |
4423 | if (bs->stop) | |
4424 | { | |
4425 | if (bs->print) | |
628fe4e4 | 4426 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4427 | else |
628fe4e4 | 4428 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4429 | } |
4430 | else | |
628fe4e4 | 4431 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4432 | break; |
4433 | case bp_watchpoint: | |
4434 | case bp_hardware_watchpoint: | |
4435 | case bp_read_watchpoint: | |
4436 | case bp_access_watchpoint: | |
4437 | if (bs->stop) | |
4438 | { | |
4439 | if (bs->print) | |
628fe4e4 | 4440 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4441 | else |
628fe4e4 | 4442 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4443 | } |
4444 | else | |
628fe4e4 JK |
4445 | { |
4446 | /* There was a watchpoint, but we're not stopping. | |
4447 | This requires no further action. */ | |
4448 | } | |
c906108c SS |
4449 | break; |
4450 | case bp_longjmp: | |
186c406b | 4451 | case bp_exception: |
628fe4e4 | 4452 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4453 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4454 | break; |
4455 | case bp_longjmp_resume: | |
186c406b | 4456 | case bp_exception_resume: |
628fe4e4 | 4457 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4458 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4459 | break; |
4460 | case bp_step_resume: | |
4461 | if (bs->stop) | |
628fe4e4 JK |
4462 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4463 | else | |
c906108c | 4464 | { |
628fe4e4 JK |
4465 | /* It is for the wrong frame. */ |
4466 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4467 | } |
c906108c | 4468 | break; |
c906108c | 4469 | case bp_watchpoint_scope: |
c4093a6a | 4470 | case bp_thread_event: |
1900040c | 4471 | case bp_overlay_event: |
0fd8e87f | 4472 | case bp_longjmp_master: |
aa7d318d | 4473 | case bp_std_terminate_master: |
186c406b | 4474 | case bp_exception_master: |
628fe4e4 | 4475 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4476 | break; |
ce78b96d | 4477 | case bp_catchpoint: |
c5aa993b JM |
4478 | if (bs->stop) |
4479 | { | |
4480 | if (bs->print) | |
628fe4e4 | 4481 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4482 | else |
628fe4e4 | 4483 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4484 | } |
4485 | else | |
628fe4e4 JK |
4486 | { |
4487 | /* There was a catchpoint, but we're not stopping. | |
4488 | This requires no further action. */ | |
4489 | } | |
4490 | break; | |
4491 | case bp_shlib_event: | |
4492 | shlib_event = 1; | |
4493 | ||
4494 | /* If requested, stop when the dynamic linker notifies GDB | |
4495 | of events. This allows the user to get control and place | |
4496 | breakpoints in initializer routines for dynamically | |
4497 | loaded objects (among other things). */ | |
4498 | if (stop_on_solib_events) | |
4499 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4500 | else | |
4501 | this_action = BPSTAT_WHAT_SINGLE; | |
4502 | break; | |
4503 | case bp_jit_event: | |
4504 | jit_event = 1; | |
4505 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4506 | break; |
c906108c | 4507 | case bp_call_dummy: |
53a5351d JM |
4508 | /* Make sure the action is stop (silent or noisy), |
4509 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4510 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4511 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4512 | break; |
4513 | case bp_std_terminate: | |
4514 | /* Make sure the action is stop (silent or noisy), | |
4515 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4516 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4517 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4518 | break; |
1042e4c0 | 4519 | case bp_tracepoint: |
7a697b8d | 4520 | case bp_fast_tracepoint: |
0fb4aa4b | 4521 | case bp_static_tracepoint: |
1042e4c0 SS |
4522 | /* Tracepoint hits should not be reported back to GDB, and |
4523 | if one got through somehow, it should have been filtered | |
4524 | out already. */ | |
4525 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4526 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4527 | break; |
4528 | case bp_gnu_ifunc_resolver: | |
4529 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4530 | this_action = BPSTAT_WHAT_SINGLE; | |
4531 | break; | |
4532 | case bp_gnu_ifunc_resolver_return: | |
4533 | /* The breakpoint will be removed, execution will restart from the | |
4534 | PC of the former breakpoint. */ | |
4535 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4536 | break; | |
628fe4e4 JK |
4537 | default: |
4538 | internal_error (__FILE__, __LINE__, | |
4539 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4540 | } |
628fe4e4 JK |
4541 | |
4542 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4543 | } |
628fe4e4 | 4544 | |
0e30163f JK |
4545 | /* These operations may affect the bs->breakpoint_at state so they are |
4546 | delayed after MAIN_ACTION is decided above. */ | |
4547 | ||
628fe4e4 JK |
4548 | if (shlib_event) |
4549 | { | |
4550 | if (debug_infrun) | |
4551 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4552 | ||
4553 | /* Check for any newly added shared libraries if we're supposed | |
4554 | to be adding them automatically. */ | |
4555 | ||
4556 | /* Switch terminal for any messages produced by | |
4557 | breakpoint_re_set. */ | |
4558 | target_terminal_ours_for_output (); | |
4559 | ||
4560 | #ifdef SOLIB_ADD | |
4561 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4562 | #else | |
4563 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4564 | #endif | |
4565 | ||
4566 | target_terminal_inferior (); | |
4567 | } | |
4568 | ||
4569 | if (jit_event) | |
4570 | { | |
4571 | if (debug_infrun) | |
4572 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4573 | ||
4574 | handle_jit_event (); | |
4575 | } | |
4576 | ||
0e30163f JK |
4577 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4578 | { | |
4579 | struct breakpoint *b = bs->breakpoint_at; | |
4580 | ||
4581 | if (b == NULL) | |
4582 | continue; | |
4583 | switch (b->type) | |
4584 | { | |
4585 | case bp_gnu_ifunc_resolver: | |
4586 | gnu_ifunc_resolver_stop (b); | |
4587 | break; | |
4588 | case bp_gnu_ifunc_resolver_return: | |
4589 | gnu_ifunc_resolver_return_stop (b); | |
4590 | break; | |
4591 | } | |
4592 | } | |
4593 | ||
c906108c SS |
4594 | return retval; |
4595 | } | |
4596 | ||
4597 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4598 | without hardware support). This isn't related to a specific bpstat, | |
4599 | just to things like whether watchpoints are set. */ | |
4600 | ||
c5aa993b | 4601 | int |
fba45db2 | 4602 | bpstat_should_step (void) |
c906108c SS |
4603 | { |
4604 | struct breakpoint *b; | |
cc59ec59 | 4605 | |
c906108c | 4606 | ALL_BREAKPOINTS (b) |
717a8278 | 4607 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4608 | return 1; |
c906108c SS |
4609 | return 0; |
4610 | } | |
4611 | ||
67822962 PA |
4612 | int |
4613 | bpstat_causes_stop (bpstat bs) | |
4614 | { | |
4615 | for (; bs != NULL; bs = bs->next) | |
4616 | if (bs->stop) | |
4617 | return 1; | |
4618 | ||
4619 | return 0; | |
4620 | } | |
4621 | ||
c906108c | 4622 | \f |
c5aa993b | 4623 | |
170b53b2 UW |
4624 | /* Compute a string of spaces suitable to indent the next line |
4625 | so it starts at the position corresponding to the table column | |
4626 | named COL_NAME in the currently active table of UIOUT. */ | |
4627 | ||
4628 | static char * | |
4629 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4630 | { | |
4631 | static char wrap_indent[80]; | |
4632 | int i, total_width, width, align; | |
4633 | char *text; | |
4634 | ||
4635 | total_width = 0; | |
4636 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4637 | { | |
4638 | if (strcmp (text, col_name) == 0) | |
4639 | { | |
4640 | gdb_assert (total_width < sizeof wrap_indent); | |
4641 | memset (wrap_indent, ' ', total_width); | |
4642 | wrap_indent[total_width] = 0; | |
4643 | ||
4644 | return wrap_indent; | |
4645 | } | |
4646 | ||
4647 | total_width += width + 1; | |
4648 | } | |
4649 | ||
4650 | return NULL; | |
4651 | } | |
4652 | ||
859825b8 JK |
4653 | /* Print the LOC location out of the list of B->LOC locations. */ |
4654 | ||
170b53b2 UW |
4655 | static void |
4656 | print_breakpoint_location (struct breakpoint *b, | |
4657 | struct bp_location *loc) | |
0d381245 | 4658 | { |
6c95b8df PA |
4659 | struct cleanup *old_chain = save_current_program_space (); |
4660 | ||
859825b8 JK |
4661 | if (loc != NULL && loc->shlib_disabled) |
4662 | loc = NULL; | |
4663 | ||
6c95b8df PA |
4664 | if (loc != NULL) |
4665 | set_current_program_space (loc->pspace); | |
4666 | ||
56435ebe TT |
4667 | if (b->display_canonical) |
4668 | ui_out_field_string (uiout, "what", b->addr_string); | |
4669 | else if (b->source_file && loc) | |
0d381245 VP |
4670 | { |
4671 | struct symbol *sym | |
4672 | = find_pc_sect_function (loc->address, loc->section); | |
4673 | if (sym) | |
4674 | { | |
4675 | ui_out_text (uiout, "in "); | |
4676 | ui_out_field_string (uiout, "func", | |
4677 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4678 | ui_out_text (uiout, " "); |
4679 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4680 | ui_out_text (uiout, "at "); | |
0d381245 VP |
4681 | } |
4682 | ui_out_field_string (uiout, "file", b->source_file); | |
4683 | ui_out_text (uiout, ":"); | |
4684 | ||
4685 | if (ui_out_is_mi_like_p (uiout)) | |
4686 | { | |
4687 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4688 | char *fullname = symtab_to_fullname (sal.symtab); | |
4689 | ||
4690 | if (fullname) | |
4691 | ui_out_field_string (uiout, "fullname", fullname); | |
4692 | } | |
4693 | ||
4694 | ui_out_field_int (uiout, "line", b->line_number); | |
4695 | } | |
859825b8 | 4696 | else if (loc) |
0d381245 | 4697 | { |
170b53b2 UW |
4698 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4699 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4700 | ||
22e722e1 DJ |
4701 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4702 | demangle, ""); | |
0d381245 | 4703 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4704 | |
4705 | do_cleanups (stb_chain); | |
0d381245 | 4706 | } |
859825b8 JK |
4707 | else |
4708 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4709 | |
4710 | do_cleanups (old_chain); | |
0d381245 VP |
4711 | } |
4712 | ||
269b11a2 PA |
4713 | static const char * |
4714 | bptype_string (enum bptype type) | |
c906108c | 4715 | { |
c4093a6a JM |
4716 | struct ep_type_description |
4717 | { | |
4718 | enum bptype type; | |
4719 | char *description; | |
4720 | }; | |
4721 | static struct ep_type_description bptypes[] = | |
c906108c | 4722 | { |
c5aa993b JM |
4723 | {bp_none, "?deleted?"}, |
4724 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4725 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4726 | {bp_until, "until"}, |
4727 | {bp_finish, "finish"}, | |
4728 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4729 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4730 | {bp_read_watchpoint, "read watchpoint"}, |
4731 | {bp_access_watchpoint, "acc watchpoint"}, | |
4732 | {bp_longjmp, "longjmp"}, | |
4733 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4734 | {bp_exception, "exception"}, |
4735 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4736 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4737 | {bp_watchpoint_scope, "watchpoint scope"}, |
4738 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4739 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4740 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4741 | {bp_thread_event, "thread events"}, |
1900040c | 4742 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4743 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4744 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4745 | {bp_exception_master, "exception master"}, |
ce78b96d | 4746 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4747 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4748 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4749 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4750 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4751 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4752 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4753 | }; |
269b11a2 PA |
4754 | |
4755 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4756 | || ((int) type != bptypes[(int) type].type)) | |
4757 | internal_error (__FILE__, __LINE__, | |
4758 | _("bptypes table does not describe type #%d."), | |
4759 | (int) type); | |
4760 | ||
4761 | return bptypes[(int) type].description; | |
4762 | } | |
4763 | ||
4764 | /* Print B to gdb_stdout. */ | |
4765 | ||
4766 | static void | |
4767 | print_one_breakpoint_location (struct breakpoint *b, | |
4768 | struct bp_location *loc, | |
4769 | int loc_number, | |
4770 | struct bp_location **last_loc, | |
269b11a2 PA |
4771 | int allflag) |
4772 | { | |
4773 | struct command_line *l; | |
c2c6d25f | 4774 | static char bpenables[] = "nynny"; |
3b31d625 | 4775 | struct cleanup *bkpt_chain; |
c906108c | 4776 | |
0d381245 VP |
4777 | int header_of_multiple = 0; |
4778 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4779 | struct value_print_options opts; |
4780 | ||
4781 | get_user_print_options (&opts); | |
0d381245 VP |
4782 | |
4783 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4784 | /* See comment in print_one_breakpoint concerning treatment of |
4785 | breakpoints with single disabled location. */ | |
0d381245 VP |
4786 | if (loc == NULL |
4787 | && (b->loc != NULL | |
4788 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4789 | header_of_multiple = 1; | |
4790 | if (loc == NULL) | |
4791 | loc = b->loc; | |
4792 | ||
c4093a6a | 4793 | annotate_record (); |
3b31d625 | 4794 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4795 | |
4796 | /* 1 */ | |
4797 | annotate_field (0); | |
0d381245 VP |
4798 | if (part_of_multiple) |
4799 | { | |
4800 | char *formatted; | |
0c6773c1 | 4801 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4802 | ui_out_field_string (uiout, "number", formatted); |
4803 | xfree (formatted); | |
4804 | } | |
4805 | else | |
4806 | { | |
4807 | ui_out_field_int (uiout, "number", b->number); | |
4808 | } | |
c4093a6a JM |
4809 | |
4810 | /* 2 */ | |
4811 | annotate_field (1); | |
0d381245 VP |
4812 | if (part_of_multiple) |
4813 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4814 | else |
4815 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4816 | |
4817 | /* 3 */ | |
4818 | annotate_field (2); | |
0d381245 VP |
4819 | if (part_of_multiple) |
4820 | ui_out_field_skip (uiout, "disp"); | |
4821 | else | |
2cec12e5 | 4822 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4823 | |
c4093a6a JM |
4824 | |
4825 | /* 4 */ | |
4826 | annotate_field (3); | |
0d381245 | 4827 | if (part_of_multiple) |
54e52265 | 4828 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4829 | else |
4a64f543 MS |
4830 | ui_out_field_fmt (uiout, "enabled", "%c", |
4831 | bpenables[(int) b->enable_state]); | |
54e52265 | 4832 | ui_out_spaces (uiout, 2); |
0d381245 | 4833 | |
c4093a6a JM |
4834 | |
4835 | /* 5 and 6 */ | |
3086aeae | 4836 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4837 | { |
4a64f543 MS |
4838 | /* Although the print_one can possibly print all locations, |
4839 | calling it here is not likely to get any nice result. So, | |
4840 | make sure there's just one location. */ | |
0d381245 | 4841 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4842 | b->ops->print_one (b, last_loc); |
0d381245 | 4843 | } |
3086aeae DJ |
4844 | else |
4845 | switch (b->type) | |
4846 | { | |
4847 | case bp_none: | |
4848 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4849 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4850 | break; |
c906108c | 4851 | |
3086aeae DJ |
4852 | case bp_watchpoint: |
4853 | case bp_hardware_watchpoint: | |
4854 | case bp_read_watchpoint: | |
4855 | case bp_access_watchpoint: | |
4856 | /* Field 4, the address, is omitted (which makes the columns | |
4857 | not line up too nicely with the headers, but the effect | |
4858 | is relatively readable). */ | |
79a45b7d | 4859 | if (opts.addressprint) |
3086aeae DJ |
4860 | ui_out_field_skip (uiout, "addr"); |
4861 | annotate_field (5); | |
fa8a61dc | 4862 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4863 | break; |
4864 | ||
3086aeae DJ |
4865 | case bp_breakpoint: |
4866 | case bp_hardware_breakpoint: | |
4867 | case bp_until: | |
4868 | case bp_finish: | |
4869 | case bp_longjmp: | |
4870 | case bp_longjmp_resume: | |
186c406b TT |
4871 | case bp_exception: |
4872 | case bp_exception_resume: | |
3086aeae | 4873 | case bp_step_resume: |
3086aeae DJ |
4874 | case bp_watchpoint_scope: |
4875 | case bp_call_dummy: | |
aa7d318d | 4876 | case bp_std_terminate: |
3086aeae DJ |
4877 | case bp_shlib_event: |
4878 | case bp_thread_event: | |
4879 | case bp_overlay_event: | |
0fd8e87f | 4880 | case bp_longjmp_master: |
aa7d318d | 4881 | case bp_std_terminate_master: |
186c406b | 4882 | case bp_exception_master: |
1042e4c0 | 4883 | case bp_tracepoint: |
7a697b8d | 4884 | case bp_fast_tracepoint: |
0fb4aa4b | 4885 | case bp_static_tracepoint: |
4efc6507 | 4886 | case bp_jit_event: |
0e30163f JK |
4887 | case bp_gnu_ifunc_resolver: |
4888 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4889 | if (opts.addressprint) |
3086aeae DJ |
4890 | { |
4891 | annotate_field (4); | |
54e52265 | 4892 | if (header_of_multiple) |
0d381245 | 4893 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4894 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4895 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4896 | else |
5af949e3 UW |
4897 | ui_out_field_core_addr (uiout, "addr", |
4898 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4899 | } |
4900 | annotate_field (5); | |
0d381245 | 4901 | if (!header_of_multiple) |
170b53b2 | 4902 | print_breakpoint_location (b, loc); |
0d381245 | 4903 | if (b->loc) |
a6d9a66e | 4904 | *last_loc = b->loc; |
3086aeae DJ |
4905 | break; |
4906 | } | |
c906108c | 4907 | |
6c95b8df PA |
4908 | |
4909 | /* For backward compatibility, don't display inferiors unless there | |
4910 | are several. */ | |
4911 | if (loc != NULL | |
4912 | && !header_of_multiple | |
4913 | && (allflag | |
4914 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4915 | && (number_of_program_spaces () > 1 | |
4916 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4917 | /* LOC is for existing B, it cannot be in |
4918 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4919 | && loc->owner->type != bp_catchpoint))) |
4920 | { | |
4921 | struct inferior *inf; | |
4922 | int first = 1; | |
4923 | ||
4924 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4925 | { | |
4926 | if (inf->pspace == loc->pspace) | |
4927 | { | |
4928 | if (first) | |
4929 | { | |
4930 | first = 0; | |
4931 | ui_out_text (uiout, " inf "); | |
4932 | } | |
4933 | else | |
4934 | ui_out_text (uiout, ", "); | |
4935 | ui_out_text (uiout, plongest (inf->num)); | |
4936 | } | |
4937 | } | |
4938 | } | |
4939 | ||
4a306c9a | 4940 | if (!part_of_multiple) |
c4093a6a | 4941 | { |
4a306c9a JB |
4942 | if (b->thread != -1) |
4943 | { | |
4944 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4945 | "stop only in" line a little further down. */ |
4a306c9a JB |
4946 | ui_out_text (uiout, " thread "); |
4947 | ui_out_field_int (uiout, "thread", b->thread); | |
4948 | } | |
4949 | else if (b->task != 0) | |
4950 | { | |
4951 | ui_out_text (uiout, " task "); | |
4952 | ui_out_field_int (uiout, "task", b->task); | |
4953 | } | |
c4093a6a JM |
4954 | } |
4955 | ||
8b93c638 | 4956 | ui_out_text (uiout, "\n"); |
c4093a6a | 4957 | |
0fb4aa4b PA |
4958 | if (!part_of_multiple && b->static_trace_marker_id) |
4959 | { | |
4960 | gdb_assert (b->type == bp_static_tracepoint); | |
4961 | ||
4962 | ui_out_text (uiout, "\tmarker id is "); | |
4963 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4964 | b->static_trace_marker_id); | |
4965 | ui_out_text (uiout, "\n"); | |
4966 | } | |
4967 | ||
0d381245 | 4968 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4969 | { |
4970 | annotate_field (6); | |
8b93c638 | 4971 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4972 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4973 | the frame ID. */ | |
5af949e3 UW |
4974 | ui_out_field_core_addr (uiout, "frame", |
4975 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4976 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4977 | } |
4978 | ||
0d381245 | 4979 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4980 | { |
f7f9143b JB |
4981 | /* We do not print the condition for Ada exception catchpoints |
4982 | because the condition is an internal implementation detail | |
4983 | that we do not want to expose to the user. */ | |
c4093a6a | 4984 | annotate_field (7); |
d77f58be | 4985 | if (is_tracepoint (b)) |
1042e4c0 SS |
4986 | ui_out_text (uiout, "\ttrace only if "); |
4987 | else | |
4988 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4989 | ui_out_field_string (uiout, "cond", b->cond_string); |
4990 | ui_out_text (uiout, "\n"); | |
4991 | } | |
4992 | ||
0d381245 | 4993 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4994 | { |
4a64f543 | 4995 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4996 | ui_out_text (uiout, "\tstop only in thread "); |
4997 | ui_out_field_int (uiout, "thread", b->thread); | |
4998 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4999 | } |
5000 | ||
63c715c6 | 5001 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 5002 | { |
4a64f543 | 5003 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5004 | if (ep_is_catchpoint (b)) |
5005 | ui_out_text (uiout, "\tcatchpoint"); | |
5006 | else | |
5007 | ui_out_text (uiout, "\tbreakpoint"); | |
5008 | ui_out_text (uiout, " already hit "); | |
5009 | ui_out_field_int (uiout, "times", b->hit_count); | |
5010 | if (b->hit_count == 1) | |
5011 | ui_out_text (uiout, " time\n"); | |
5012 | else | |
5013 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
5014 | } |
5015 | ||
4a64f543 MS |
5016 | /* Output the count also if it is zero, but only if this is mi. |
5017 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 5018 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 5019 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 5020 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 5021 | |
0d381245 | 5022 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
5023 | { |
5024 | annotate_field (8); | |
8b93c638 JM |
5025 | ui_out_text (uiout, "\tignore next "); |
5026 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
5027 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 5028 | } |
059fb39f | 5029 | |
9add0f1b | 5030 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 5031 | if (!part_of_multiple && l) |
c4093a6a | 5032 | { |
3b31d625 EZ |
5033 | struct cleanup *script_chain; |
5034 | ||
c4093a6a | 5035 | annotate_field (9); |
3b31d625 | 5036 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 5037 | print_command_lines (uiout, l, 4); |
3b31d625 | 5038 | do_cleanups (script_chain); |
c4093a6a | 5039 | } |
d24317b4 | 5040 | |
1042e4c0 SS |
5041 | if (!part_of_multiple && b->pass_count) |
5042 | { | |
5043 | annotate_field (10); | |
5044 | ui_out_text (uiout, "\tpass count "); | |
5045 | ui_out_field_int (uiout, "pass", b->pass_count); | |
5046 | ui_out_text (uiout, " \n"); | |
5047 | } | |
5048 | ||
d24317b4 VP |
5049 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
5050 | { | |
5051 | if (b->addr_string) | |
5052 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
5053 | else if (b->exp_string) | |
5054 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
5055 | } | |
5056 | ||
3b31d625 | 5057 | do_cleanups (bkpt_chain); |
c4093a6a | 5058 | } |
c5aa993b | 5059 | |
0d381245 VP |
5060 | static void |
5061 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5062 | struct bp_location **last_loc, |
6c95b8df | 5063 | int allflag) |
0d381245 | 5064 | { |
12c5a436 | 5065 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
0d381245 VP |
5066 | |
5067 | /* If this breakpoint has custom print function, | |
5068 | it's already printed. Otherwise, print individual | |
5069 | locations, if any. */ | |
5070 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5071 | { | |
4a64f543 MS |
5072 | /* If breakpoint has a single location that is disabled, we |
5073 | print it as if it had several locations, since otherwise it's | |
5074 | hard to represent "breakpoint enabled, location disabled" | |
5075 | situation. | |
5076 | ||
5077 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5078 | internally, that's not a property exposed to user. */ |
0d381245 | 5079 | if (b->loc |
a5606eee | 5080 | && !is_hardware_watchpoint (b) |
0d381245 | 5081 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 5082 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
5083 | { |
5084 | struct bp_location *loc; | |
5085 | int n = 1; | |
5086 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
12c5a436 | 5087 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
0d381245 VP |
5088 | } |
5089 | } | |
5090 | } | |
5091 | ||
a6d9a66e UW |
5092 | static int |
5093 | breakpoint_address_bits (struct breakpoint *b) | |
5094 | { | |
5095 | int print_address_bits = 0; | |
5096 | struct bp_location *loc; | |
5097 | ||
5098 | for (loc = b->loc; loc; loc = loc->next) | |
5099 | { | |
c7437ca6 PA |
5100 | int addr_bit; |
5101 | ||
5102 | /* Software watchpoints that aren't watching memory don't have | |
5103 | an address to print. */ | |
5104 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5105 | continue; | |
5106 | ||
5107 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5108 | if (addr_bit > print_address_bits) |
5109 | print_address_bits = addr_bit; | |
5110 | } | |
5111 | ||
5112 | return print_address_bits; | |
5113 | } | |
0d381245 | 5114 | |
c4093a6a JM |
5115 | struct captured_breakpoint_query_args |
5116 | { | |
5117 | int bnum; | |
5118 | }; | |
c5aa993b | 5119 | |
c4093a6a | 5120 | static int |
2b65245e | 5121 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5122 | { |
5123 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5124 | struct breakpoint *b; |
a6d9a66e | 5125 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5126 | |
c4093a6a JM |
5127 | ALL_BREAKPOINTS (b) |
5128 | { | |
5129 | if (args->bnum == b->number) | |
c5aa993b | 5130 | { |
12c5a436 | 5131 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5132 | return GDB_RC_OK; |
c5aa993b | 5133 | } |
c4093a6a JM |
5134 | } |
5135 | return GDB_RC_NONE; | |
5136 | } | |
c5aa993b | 5137 | |
c4093a6a | 5138 | enum gdb_rc |
4a64f543 MS |
5139 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5140 | char **error_message) | |
c4093a6a JM |
5141 | { |
5142 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5143 | |
c4093a6a JM |
5144 | args.bnum = bnum; |
5145 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5146 | an error. */ |
b0b13bb4 DJ |
5147 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5148 | error_message, RETURN_MASK_ALL) < 0) | |
5149 | return GDB_RC_FAIL; | |
5150 | else | |
5151 | return GDB_RC_OK; | |
c4093a6a | 5152 | } |
c5aa993b | 5153 | |
7f3b0473 | 5154 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4a64f543 | 5155 | catchpoints, et.al.). */ |
7f3b0473 AC |
5156 | |
5157 | static int | |
5158 | user_settable_breakpoint (const struct breakpoint *b) | |
5159 | { | |
5160 | return (b->type == bp_breakpoint | |
ce78b96d | 5161 | || b->type == bp_catchpoint |
7f3b0473 | 5162 | || b->type == bp_hardware_breakpoint |
d77f58be | 5163 | || is_tracepoint (b) |
0e30163f JK |
5164 | || is_watchpoint (b) |
5165 | || b->type == bp_gnu_ifunc_resolver); | |
7f3b0473 | 5166 | } |
4a64f543 | 5167 | |
09d682a4 TT |
5168 | /* Return true if this breakpoint was set by the user, false if it is |
5169 | internal or momentary. */ | |
5170 | ||
5171 | int | |
5172 | user_breakpoint_p (struct breakpoint *b) | |
5173 | { | |
5174 | return user_settable_breakpoint (b) && b->number > 0; | |
5175 | } | |
5176 | ||
7f3b0473 | 5177 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5178 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5179 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5180 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5181 | ones for which it returns non-zero. Return the total number of | |
5182 | breakpoints listed. */ | |
c906108c | 5183 | |
d77f58be | 5184 | static int |
e5a67952 | 5185 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5186 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5187 | { |
52f0bd74 | 5188 | struct breakpoint *b; |
a6d9a66e | 5189 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5190 | int nr_printable_breakpoints; |
3b31d625 | 5191 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5192 | struct value_print_options opts; |
a6d9a66e | 5193 | int print_address_bits = 0; |
269b11a2 PA |
5194 | int print_type_col_width = 14; |
5195 | ||
79a45b7d TT |
5196 | get_user_print_options (&opts); |
5197 | ||
4a64f543 MS |
5198 | /* Compute the number of rows in the table, as well as the size |
5199 | required for address fields. */ | |
7f3b0473 AC |
5200 | nr_printable_breakpoints = 0; |
5201 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5202 | { |
5203 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5204 | if (filter && !filter (b)) | |
5205 | continue; | |
5206 | ||
5207 | /* If we have an "args" string, it is a list of breakpoints to | |
5208 | accept. Skip the others. */ | |
5209 | if (args != NULL && *args != '\0') | |
5210 | { | |
5211 | if (allflag && parse_and_eval_long (args) != b->number) | |
5212 | continue; | |
5213 | if (!allflag && !number_is_in_list (args, b->number)) | |
5214 | continue; | |
5215 | } | |
269b11a2 | 5216 | |
e5a67952 MS |
5217 | if (allflag || user_breakpoint_p (b)) |
5218 | { | |
5219 | int addr_bit, type_len; | |
a6d9a66e | 5220 | |
e5a67952 MS |
5221 | addr_bit = breakpoint_address_bits (b); |
5222 | if (addr_bit > print_address_bits) | |
5223 | print_address_bits = addr_bit; | |
269b11a2 | 5224 | |
e5a67952 MS |
5225 | type_len = strlen (bptype_string (b->type)); |
5226 | if (type_len > print_type_col_width) | |
5227 | print_type_col_width = type_len; | |
5228 | ||
5229 | nr_printable_breakpoints++; | |
5230 | } | |
5231 | } | |
7f3b0473 | 5232 | |
79a45b7d | 5233 | if (opts.addressprint) |
3b31d625 | 5234 | bkpttbl_chain |
3e43a32a MS |
5235 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5236 | nr_printable_breakpoints, | |
3b31d625 | 5237 | "BreakpointTable"); |
8b93c638 | 5238 | else |
3b31d625 | 5239 | bkpttbl_chain |
3e43a32a MS |
5240 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5241 | nr_printable_breakpoints, | |
3b31d625 | 5242 | "BreakpointTable"); |
8b93c638 | 5243 | |
7f3b0473 | 5244 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5245 | annotate_breakpoints_headers (); |
5246 | if (nr_printable_breakpoints > 0) | |
5247 | annotate_field (0); | |
4a64f543 | 5248 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5249 | if (nr_printable_breakpoints > 0) |
5250 | annotate_field (1); | |
269b11a2 | 5251 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5252 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5253 | if (nr_printable_breakpoints > 0) |
5254 | annotate_field (2); | |
4a64f543 | 5255 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5256 | if (nr_printable_breakpoints > 0) |
5257 | annotate_field (3); | |
54e52265 | 5258 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5259 | if (opts.addressprint) |
e5a67952 MS |
5260 | { |
5261 | if (nr_printable_breakpoints > 0) | |
5262 | annotate_field (4); | |
5263 | if (print_address_bits <= 32) | |
5264 | ui_out_table_header (uiout, 10, ui_left, | |
5265 | "addr", "Address"); /* 5 */ | |
5266 | else | |
5267 | ui_out_table_header (uiout, 18, ui_left, | |
5268 | "addr", "Address"); /* 5 */ | |
5269 | } | |
d7faa9e7 AC |
5270 | if (nr_printable_breakpoints > 0) |
5271 | annotate_field (5); | |
5272 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5273 | ui_out_table_body (uiout); | |
5274 | if (nr_printable_breakpoints > 0) | |
5275 | annotate_breakpoints_table (); | |
7f3b0473 | 5276 | |
c4093a6a | 5277 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5278 | { |
5279 | QUIT; | |
5280 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5281 | if (filter && !filter (b)) | |
5282 | continue; | |
5283 | ||
5284 | /* If we have an "args" string, it is a list of breakpoints to | |
5285 | accept. Skip the others. */ | |
5286 | ||
5287 | if (args != NULL && *args != '\0') | |
5288 | { | |
5289 | if (allflag) /* maintenance info breakpoint */ | |
5290 | { | |
5291 | if (parse_and_eval_long (args) != b->number) | |
5292 | continue; | |
5293 | } | |
5294 | else /* all others */ | |
5295 | { | |
5296 | if (!number_is_in_list (args, b->number)) | |
5297 | continue; | |
5298 | } | |
5299 | } | |
5300 | /* We only print out user settable breakpoints unless the | |
5301 | allflag is set. */ | |
5302 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5303 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5304 | } |
5305 | ||
3b31d625 | 5306 | do_cleanups (bkpttbl_chain); |
698384cd | 5307 | |
7f3b0473 | 5308 | if (nr_printable_breakpoints == 0) |
c906108c | 5309 | { |
4a64f543 MS |
5310 | /* If there's a filter, let the caller decide how to report |
5311 | empty list. */ | |
d77f58be SS |
5312 | if (!filter) |
5313 | { | |
e5a67952 | 5314 | if (args == NULL || *args == '\0') |
d77f58be SS |
5315 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5316 | else | |
4a64f543 | 5317 | ui_out_message (uiout, 0, |
e5a67952 MS |
5318 | "No breakpoint or watchpoint matching '%s'.\n", |
5319 | args); | |
d77f58be | 5320 | } |
c906108c SS |
5321 | } |
5322 | else | |
c4093a6a | 5323 | { |
a6d9a66e UW |
5324 | if (last_loc && !server_command) |
5325 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5326 | } |
c906108c | 5327 | |
4a64f543 | 5328 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5329 | there have been breakpoints? */ |
c906108c | 5330 | annotate_breakpoints_table_end (); |
d77f58be SS |
5331 | |
5332 | return nr_printable_breakpoints; | |
c906108c SS |
5333 | } |
5334 | ||
ad443146 SS |
5335 | /* Display the value of default-collect in a way that is generally |
5336 | compatible with the breakpoint list. */ | |
5337 | ||
5338 | static void | |
5339 | default_collect_info (void) | |
5340 | { | |
5341 | /* If it has no value (which is frequently the case), say nothing; a | |
5342 | message like "No default-collect." gets in user's face when it's | |
5343 | not wanted. */ | |
5344 | if (!*default_collect) | |
5345 | return; | |
5346 | ||
5347 | /* The following phrase lines up nicely with per-tracepoint collect | |
5348 | actions. */ | |
5349 | ui_out_text (uiout, "default collect "); | |
5350 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5351 | ui_out_text (uiout, " \n"); | |
5352 | } | |
5353 | ||
c906108c | 5354 | static void |
e5a67952 | 5355 | breakpoints_info (char *args, int from_tty) |
c906108c | 5356 | { |
e5a67952 | 5357 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5358 | |
5359 | default_collect_info (); | |
d77f58be SS |
5360 | } |
5361 | ||
5362 | static void | |
e5a67952 | 5363 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5364 | { |
e5a67952 | 5365 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
d77f58be SS |
5366 | |
5367 | if (num_printed == 0) | |
5368 | { | |
e5a67952 | 5369 | if (args == NULL || *args == '\0') |
d77f58be SS |
5370 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5371 | else | |
e5a67952 | 5372 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5373 | } |
c906108c SS |
5374 | } |
5375 | ||
7a292a7a | 5376 | static void |
e5a67952 | 5377 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5378 | { |
e5a67952 | 5379 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5380 | |
5381 | default_collect_info (); | |
c906108c SS |
5382 | } |
5383 | ||
0d381245 | 5384 | static int |
714835d5 | 5385 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5386 | struct program_space *pspace, |
714835d5 | 5387 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5388 | { |
5389 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5390 | |
0d381245 VP |
5391 | for (; bl; bl = bl->next) |
5392 | { | |
6c95b8df PA |
5393 | if (bl->pspace == pspace |
5394 | && bl->address == pc | |
0d381245 VP |
5395 | && (!overlay_debugging || bl->section == section)) |
5396 | return 1; | |
5397 | } | |
5398 | return 0; | |
5399 | } | |
5400 | ||
6c95b8df PA |
5401 | /* Print a message describing any breakpoints set at PC. This |
5402 | concerns with logical breakpoints, so we match program spaces, not | |
5403 | address spaces. */ | |
c906108c SS |
5404 | |
5405 | static void | |
6c95b8df PA |
5406 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5407 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5408 | struct obj_section *section, int thread) |
c906108c | 5409 | { |
52f0bd74 AC |
5410 | int others = 0; |
5411 | struct breakpoint *b; | |
c906108c SS |
5412 | |
5413 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5414 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5415 | if (others > 0) |
5416 | { | |
a3f17187 AC |
5417 | if (others == 1) |
5418 | printf_filtered (_("Note: breakpoint ")); | |
5419 | else /* if (others == ???) */ | |
5420 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5421 | ALL_BREAKPOINTS (b) |
6c95b8df | 5422 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5423 | { |
5424 | others--; | |
5425 | printf_filtered ("%d", b->number); | |
5426 | if (b->thread == -1 && thread != -1) | |
5427 | printf_filtered (" (all threads)"); | |
5428 | else if (b->thread != -1) | |
5429 | printf_filtered (" (thread %d)", b->thread); | |
5430 | printf_filtered ("%s%s ", | |
059fb39f | 5431 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5432 | || b->enable_state == bp_call_disabled |
5433 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5434 | ? " (disabled)" |
5435 | : b->enable_state == bp_permanent | |
5436 | ? " (permanent)" | |
5437 | : ""), | |
5438 | (others > 1) ? "," | |
5439 | : ((others == 1) ? " and" : "")); | |
5440 | } | |
a3f17187 | 5441 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5442 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5443 | printf_filtered (".\n"); |
5444 | } | |
5445 | } | |
5446 | \f | |
5447 | /* Set the default place to put a breakpoint | |
5448 | for the `break' command with no arguments. */ | |
5449 | ||
5450 | void | |
6c95b8df PA |
5451 | set_default_breakpoint (int valid, struct program_space *pspace, |
5452 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5453 | int line) |
c906108c SS |
5454 | { |
5455 | default_breakpoint_valid = valid; | |
6c95b8df | 5456 | default_breakpoint_pspace = pspace; |
c906108c SS |
5457 | default_breakpoint_address = addr; |
5458 | default_breakpoint_symtab = symtab; | |
5459 | default_breakpoint_line = line; | |
5460 | } | |
5461 | ||
e4f237da KB |
5462 | /* Return true iff it is meaningful to use the address member of |
5463 | BPT. For some breakpoint types, the address member is irrelevant | |
5464 | and it makes no sense to attempt to compare it to other addresses | |
5465 | (or use it for any other purpose either). | |
5466 | ||
4a64f543 MS |
5467 | More specifically, each of the following breakpoint types will |
5468 | always have a zero valued address and we don't want to mark | |
5469 | breakpoints of any of these types to be a duplicate of an actual | |
5470 | breakpoint at address zero: | |
e4f237da KB |
5471 | |
5472 | bp_watchpoint | |
2d134ed3 PA |
5473 | bp_catchpoint |
5474 | ||
5475 | */ | |
e4f237da KB |
5476 | |
5477 | static int | |
5478 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5479 | { | |
5480 | enum bptype type = bpt->type; | |
5481 | ||
2d134ed3 PA |
5482 | return (type != bp_watchpoint && type != bp_catchpoint); |
5483 | } | |
5484 | ||
5485 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5486 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5487 | ||
5488 | static int | |
4a64f543 MS |
5489 | watchpoint_locations_match (struct bp_location *loc1, |
5490 | struct bp_location *loc2) | |
2d134ed3 | 5491 | { |
2bdf28a0 JK |
5492 | /* Both of them must not be in moribund_locations. */ |
5493 | gdb_assert (loc1->owner != NULL); | |
5494 | gdb_assert (loc2->owner != NULL); | |
5495 | ||
4a64f543 MS |
5496 | /* If the target can evaluate the condition expression in hardware, |
5497 | then we we need to insert both watchpoints even if they are at | |
5498 | the same place. Otherwise the watchpoint will only trigger when | |
5499 | the condition of whichever watchpoint was inserted evaluates to | |
5500 | true, not giving a chance for GDB to check the condition of the | |
5501 | other watchpoint. */ | |
0cf6dd15 | 5502 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5503 | && target_can_accel_watchpoint_condition (loc1->address, |
5504 | loc1->length, | |
0cf6dd15 TJB |
5505 | loc1->watchpoint_type, |
5506 | loc1->owner->cond_exp)) | |
5507 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5508 | && target_can_accel_watchpoint_condition (loc2->address, |
5509 | loc2->length, | |
0cf6dd15 TJB |
5510 | loc2->watchpoint_type, |
5511 | loc2->owner->cond_exp))) | |
5512 | return 0; | |
5513 | ||
85d721b8 PA |
5514 | /* Note that this checks the owner's type, not the location's. In |
5515 | case the target does not support read watchpoints, but does | |
5516 | support access watchpoints, we'll have bp_read_watchpoint | |
5517 | watchpoints with hw_access locations. Those should be considered | |
5518 | duplicates of hw_read locations. The hw_read locations will | |
5519 | become hw_access locations later. */ | |
2d134ed3 PA |
5520 | return (loc1->owner->type == loc2->owner->type |
5521 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5522 | && loc1->address == loc2->address | |
5523 | && loc1->length == loc2->length); | |
e4f237da KB |
5524 | } |
5525 | ||
6c95b8df PA |
5526 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5527 | same breakpoint location. In most targets, this can only be true | |
5528 | if ASPACE1 matches ASPACE2. On targets that have global | |
5529 | breakpoints, the address space doesn't really matter. */ | |
5530 | ||
5531 | static int | |
5532 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5533 | struct address_space *aspace2, CORE_ADDR addr2) | |
5534 | { | |
5535 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5536 | || aspace1 == aspace2) | |
5537 | && addr1 == addr2); | |
5538 | } | |
5539 | ||
2d134ed3 PA |
5540 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5541 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5542 | represent the same location. */ | |
5543 | ||
5544 | static int | |
4a64f543 MS |
5545 | breakpoint_locations_match (struct bp_location *loc1, |
5546 | struct bp_location *loc2) | |
2d134ed3 | 5547 | { |
2bdf28a0 JK |
5548 | int hw_point1, hw_point2; |
5549 | ||
5550 | /* Both of them must not be in moribund_locations. */ | |
5551 | gdb_assert (loc1->owner != NULL); | |
5552 | gdb_assert (loc2->owner != NULL); | |
5553 | ||
5554 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5555 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5556 | |
5557 | if (hw_point1 != hw_point2) | |
5558 | return 0; | |
5559 | else if (hw_point1) | |
5560 | return watchpoint_locations_match (loc1, loc2); | |
5561 | else | |
5562 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5563 | loc2->pspace->aspace, loc2->address); | |
5564 | } | |
5565 | ||
76897487 KB |
5566 | static void |
5567 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5568 | int bnum, int have_bnum) | |
5569 | { | |
f63fbe86 MS |
5570 | /* The longest string possibly returned by hex_string_custom |
5571 | is 50 chars. These must be at least that big for safety. */ | |
5572 | char astr1[64]; | |
5573 | char astr2[64]; | |
76897487 | 5574 | |
bb599908 PH |
5575 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5576 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5577 | if (have_bnum) |
8a3fe4f8 | 5578 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5579 | bnum, astr1, astr2); |
5580 | else | |
8a3fe4f8 | 5581 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5582 | } |
5583 | ||
4a64f543 MS |
5584 | /* Adjust a breakpoint's address to account for architectural |
5585 | constraints on breakpoint placement. Return the adjusted address. | |
5586 | Note: Very few targets require this kind of adjustment. For most | |
5587 | targets, this function is simply the identity function. */ | |
76897487 KB |
5588 | |
5589 | static CORE_ADDR | |
a6d9a66e UW |
5590 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5591 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5592 | { |
a6d9a66e | 5593 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5594 | { |
5595 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5596 | return bpaddr; | |
5597 | } | |
88f7da05 KB |
5598 | else if (bptype == bp_watchpoint |
5599 | || bptype == bp_hardware_watchpoint | |
5600 | || bptype == bp_read_watchpoint | |
5601 | || bptype == bp_access_watchpoint | |
fe798b75 | 5602 | || bptype == bp_catchpoint) |
88f7da05 KB |
5603 | { |
5604 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5605 | have their addresses modified. */ | |
5606 | return bpaddr; | |
5607 | } | |
76897487 KB |
5608 | else |
5609 | { | |
5610 | CORE_ADDR adjusted_bpaddr; | |
5611 | ||
5612 | /* Some targets have architectural constraints on the placement | |
5613 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5614 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5615 | |
5616 | /* An adjusted breakpoint address can significantly alter | |
5617 | a user's expectations. Print a warning if an adjustment | |
5618 | is required. */ | |
5619 | if (adjusted_bpaddr != bpaddr) | |
5620 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5621 | ||
5622 | return adjusted_bpaddr; | |
5623 | } | |
5624 | } | |
5625 | ||
7cc221ef DJ |
5626 | /* Allocate a struct bp_location. */ |
5627 | ||
26bb91f3 | 5628 | static struct bp_location * |
39d61571 | 5629 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5630 | { |
afe38095 | 5631 | struct bp_location *loc; |
7cc221ef DJ |
5632 | |
5633 | loc = xmalloc (sizeof (struct bp_location)); | |
5634 | memset (loc, 0, sizeof (*loc)); | |
5635 | ||
e049a4b5 | 5636 | loc->owner = bpt; |
511a6cd4 | 5637 | loc->cond = NULL; |
0d381245 VP |
5638 | loc->shlib_disabled = 0; |
5639 | loc->enabled = 1; | |
e049a4b5 | 5640 | |
39d61571 | 5641 | switch (bpt->type) |
e049a4b5 DJ |
5642 | { |
5643 | case bp_breakpoint: | |
5644 | case bp_until: | |
5645 | case bp_finish: | |
5646 | case bp_longjmp: | |
5647 | case bp_longjmp_resume: | |
186c406b TT |
5648 | case bp_exception: |
5649 | case bp_exception_resume: | |
e049a4b5 | 5650 | case bp_step_resume: |
e049a4b5 DJ |
5651 | case bp_watchpoint_scope: |
5652 | case bp_call_dummy: | |
aa7d318d | 5653 | case bp_std_terminate: |
e049a4b5 DJ |
5654 | case bp_shlib_event: |
5655 | case bp_thread_event: | |
5656 | case bp_overlay_event: | |
4efc6507 | 5657 | case bp_jit_event: |
0fd8e87f | 5658 | case bp_longjmp_master: |
aa7d318d | 5659 | case bp_std_terminate_master: |
186c406b | 5660 | case bp_exception_master: |
0e30163f JK |
5661 | case bp_gnu_ifunc_resolver: |
5662 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5663 | loc->loc_type = bp_loc_software_breakpoint; |
5664 | break; | |
5665 | case bp_hardware_breakpoint: | |
5666 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5667 | break; | |
5668 | case bp_hardware_watchpoint: | |
5669 | case bp_read_watchpoint: | |
5670 | case bp_access_watchpoint: | |
5671 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5672 | break; | |
5673 | case bp_watchpoint: | |
ce78b96d | 5674 | case bp_catchpoint: |
15c3d785 PA |
5675 | case bp_tracepoint: |
5676 | case bp_fast_tracepoint: | |
0fb4aa4b | 5677 | case bp_static_tracepoint: |
e049a4b5 DJ |
5678 | loc->loc_type = bp_loc_other; |
5679 | break; | |
5680 | default: | |
e2e0b3e5 | 5681 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5682 | } |
5683 | ||
f431efe5 | 5684 | loc->refc = 1; |
7cc221ef DJ |
5685 | return loc; |
5686 | } | |
5687 | ||
f431efe5 PA |
5688 | static void |
5689 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5690 | { |
5691 | if (loc->cond) | |
5692 | xfree (loc->cond); | |
74960c60 VP |
5693 | |
5694 | if (loc->function_name) | |
5695 | xfree (loc->function_name); | |
f431efe5 | 5696 | |
fe3f5fa8 VP |
5697 | xfree (loc); |
5698 | } | |
5699 | ||
f431efe5 PA |
5700 | /* Increment reference count. */ |
5701 | ||
5702 | static void | |
5703 | incref_bp_location (struct bp_location *bl) | |
5704 | { | |
5705 | ++bl->refc; | |
5706 | } | |
5707 | ||
5708 | /* Decrement reference count. If the reference count reaches 0, | |
5709 | destroy the bp_location. Sets *BLP to NULL. */ | |
5710 | ||
5711 | static void | |
5712 | decref_bp_location (struct bp_location **blp) | |
5713 | { | |
0807b50c PA |
5714 | gdb_assert ((*blp)->refc > 0); |
5715 | ||
f431efe5 PA |
5716 | if (--(*blp)->refc == 0) |
5717 | free_bp_location (*blp); | |
5718 | *blp = NULL; | |
5719 | } | |
5720 | ||
4a64f543 MS |
5721 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5722 | type BPTYPE and has no locations as yet. */ | |
5723 | /* This function is used in gdbtk sources and thus can not be made | |
5724 | static. */ | |
c906108c | 5725 | |
c40e75cd | 5726 | static struct breakpoint * |
a6d9a66e UW |
5727 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5728 | enum bptype bptype) | |
c906108c | 5729 | { |
52f0bd74 | 5730 | struct breakpoint *b, *b1; |
c906108c SS |
5731 | |
5732 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5733 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5734 | |
4d28f7a8 | 5735 | b->type = bptype; |
a6d9a66e | 5736 | b->gdbarch = gdbarch; |
c906108c SS |
5737 | b->language = current_language->la_language; |
5738 | b->input_radix = input_radix; | |
5739 | b->thread = -1; | |
b5de0fa7 | 5740 | b->enable_state = bp_enabled; |
c906108c SS |
5741 | b->next = 0; |
5742 | b->silent = 0; | |
5743 | b->ignore_count = 0; | |
5744 | b->commands = NULL; | |
818dd999 | 5745 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5746 | b->forked_inferior_pid = null_ptid; |
c906108c | 5747 | b->exec_pathname = NULL; |
a96d9b2e | 5748 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5749 | b->ops = NULL; |
0d381245 | 5750 | b->condition_not_parsed = 0; |
84f4c1fe | 5751 | b->py_bp_object = NULL; |
d0fb5eae | 5752 | b->related_breakpoint = b; |
c906108c | 5753 | |
4a64f543 MS |
5754 | /* Add this breakpoint to the end of the chain so that a list of |
5755 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5756 | |
5757 | b1 = breakpoint_chain; | |
5758 | if (b1 == 0) | |
5759 | breakpoint_chain = b; | |
5760 | else | |
5761 | { | |
5762 | while (b1->next) | |
5763 | b1 = b1->next; | |
5764 | b1->next = b; | |
5765 | } | |
0d381245 VP |
5766 | return b; |
5767 | } | |
5768 | ||
0e30163f JK |
5769 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5770 | resolutions should be made as the user specified the location explicitly | |
5771 | enough. */ | |
5772 | ||
0d381245 | 5773 | static void |
0e30163f | 5774 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5775 | { |
2bdf28a0 JK |
5776 | gdb_assert (loc->owner != NULL); |
5777 | ||
0d381245 | 5778 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5779 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5780 | || is_tracepoint (loc->owner)) |
0d381245 | 5781 | { |
0e30163f JK |
5782 | int is_gnu_ifunc; |
5783 | ||
5784 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5785 | NULL, NULL, &is_gnu_ifunc); | |
5786 | ||
5787 | if (is_gnu_ifunc && !explicit_loc) | |
5788 | { | |
5789 | struct breakpoint *b = loc->owner; | |
5790 | ||
5791 | gdb_assert (loc->pspace == current_program_space); | |
5792 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5793 | &loc->requested_address)) | |
5794 | { | |
5795 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5796 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5797 | loc->requested_address, | |
5798 | b->type); | |
5799 | } | |
5800 | else if (b->type == bp_breakpoint && b->loc == loc | |
5801 | && loc->next == NULL && b->related_breakpoint == b) | |
5802 | { | |
5803 | /* Create only the whole new breakpoint of this type but do not | |
5804 | mess more complicated breakpoints with multiple locations. */ | |
5805 | b->type = bp_gnu_ifunc_resolver; | |
5806 | } | |
5807 | } | |
5808 | ||
0d381245 VP |
5809 | if (loc->function_name) |
5810 | loc->function_name = xstrdup (loc->function_name); | |
5811 | } | |
5812 | } | |
5813 | ||
a6d9a66e UW |
5814 | /* Attempt to determine architecture of location identified by SAL. */ |
5815 | static struct gdbarch * | |
5816 | get_sal_arch (struct symtab_and_line sal) | |
5817 | { | |
5818 | if (sal.section) | |
5819 | return get_objfile_arch (sal.section->objfile); | |
5820 | if (sal.symtab) | |
5821 | return get_objfile_arch (sal.symtab->objfile); | |
5822 | ||
5823 | return NULL; | |
5824 | } | |
5825 | ||
0d381245 VP |
5826 | /* set_raw_breakpoint is a low level routine for allocating and |
5827 | partially initializing a breakpoint of type BPTYPE. The newly | |
5828 | created breakpoint's address, section, source file name, and line | |
5829 | number are provided by SAL. The newly created and partially | |
5830 | initialized breakpoint is added to the breakpoint chain and | |
5831 | is also returned as the value of this function. | |
5832 | ||
5833 | It is expected that the caller will complete the initialization of | |
5834 | the newly created breakpoint struct as well as output any status | |
5835 | information regarding the creation of a new breakpoint. In | |
5836 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5837 | number! Care should be taken to not allow an error to occur | |
5838 | prior to completing the initialization of the breakpoint. If this | |
5839 | should happen, a bogus breakpoint will be left on the chain. */ | |
5840 | ||
63c252f8 | 5841 | struct breakpoint * |
a6d9a66e UW |
5842 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5843 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5844 | { |
4a64f543 MS |
5845 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5846 | bptype); | |
0d381245 | 5847 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5848 | struct gdbarch *loc_gdbarch; |
5849 | ||
5850 | loc_gdbarch = get_sal_arch (sal); | |
5851 | if (!loc_gdbarch) | |
5852 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5853 | |
6c95b8df PA |
5854 | if (bptype != bp_catchpoint) |
5855 | gdb_assert (sal.pspace != NULL); | |
5856 | ||
0d381245 VP |
5857 | /* Adjust the breakpoint's address prior to allocating a location. |
5858 | Once we call allocate_bp_location(), that mostly uninitialized | |
5859 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5860 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5861 | not want its scan of the location chain to find a breakpoint and |
5862 | location that's only been partially initialized. */ | |
4a64f543 MS |
5863 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5864 | sal.pc, b->type); | |
0d381245 | 5865 | |
39d61571 | 5866 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5867 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5868 | b->loc->requested_address = sal.pc; |
5869 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5870 | b->loc->pspace = sal.pspace; |
5871 | ||
5872 | /* Store the program space that was used to set the breakpoint, for | |
5873 | breakpoint resetting. */ | |
5874 | b->pspace = sal.pspace; | |
0d381245 VP |
5875 | |
5876 | if (sal.symtab == NULL) | |
5877 | b->source_file = NULL; | |
5878 | else | |
1b36a34b | 5879 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5880 | b->loc->section = sal.section; |
5881 | b->line_number = sal.line; | |
5882 | ||
0e30163f JK |
5883 | set_breakpoint_location_function (b->loc, |
5884 | sal.explicit_pc || sal.explicit_line); | |
c906108c | 5885 | |
c906108c SS |
5886 | breakpoints_changed (); |
5887 | ||
5888 | return b; | |
5889 | } | |
5890 | ||
c2c6d25f JM |
5891 | |
5892 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5893 | instruction, hard-wired into the inferior's code. */ | |
5894 | void | |
5895 | make_breakpoint_permanent (struct breakpoint *b) | |
5896 | { | |
0d381245 | 5897 | struct bp_location *bl; |
cc59ec59 | 5898 | |
b5de0fa7 | 5899 | b->enable_state = bp_permanent; |
c2c6d25f | 5900 | |
4a64f543 MS |
5901 | /* By definition, permanent breakpoints are already present in the |
5902 | code. Mark all locations as inserted. For now, | |
5903 | make_breakpoint_permanent is called in just one place, so it's | |
5904 | hard to say if it's reasonable to have permanent breakpoint with | |
5905 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5906 | for (bl = b->loc; bl; bl = bl->next) |
5907 | bl->inserted = 1; | |
c2c6d25f JM |
5908 | } |
5909 | ||
53a5351d | 5910 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5911 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5912 | initiated the operation. */ | |
c906108c SS |
5913 | |
5914 | void | |
186c406b | 5915 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5916 | { |
35df4500 | 5917 | struct breakpoint *b, *b_tmp; |
186c406b | 5918 | int thread = tp->num; |
0fd8e87f UW |
5919 | |
5920 | /* To avoid having to rescan all objfile symbols at every step, | |
5921 | we maintain a list of continually-inserted but always disabled | |
5922 | longjmp "master" breakpoints. Here, we simply create momentary | |
5923 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5924 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5925 | if (b->pspace == current_program_space |
186c406b TT |
5926 | && (b->type == bp_longjmp_master |
5927 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5928 | { |
5929 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5930 | |
186c406b | 5931 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5932 | clone->thread = thread; |
5933 | } | |
186c406b TT |
5934 | |
5935 | tp->initiating_frame = frame; | |
c906108c SS |
5936 | } |
5937 | ||
611c83ae | 5938 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5939 | void |
611c83ae | 5940 | delete_longjmp_breakpoint (int thread) |
c906108c | 5941 | { |
35df4500 | 5942 | struct breakpoint *b, *b_tmp; |
c906108c | 5943 | |
35df4500 | 5944 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5945 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5946 | { |
5947 | if (b->thread == thread) | |
5948 | delete_breakpoint (b); | |
5949 | } | |
c906108c SS |
5950 | } |
5951 | ||
1900040c MS |
5952 | void |
5953 | enable_overlay_breakpoints (void) | |
5954 | { | |
52f0bd74 | 5955 | struct breakpoint *b; |
1900040c MS |
5956 | |
5957 | ALL_BREAKPOINTS (b) | |
5958 | if (b->type == bp_overlay_event) | |
5959 | { | |
5960 | b->enable_state = bp_enabled; | |
b60e7edf | 5961 | update_global_location_list (1); |
c02f5703 | 5962 | overlay_events_enabled = 1; |
1900040c MS |
5963 | } |
5964 | } | |
5965 | ||
5966 | void | |
5967 | disable_overlay_breakpoints (void) | |
5968 | { | |
52f0bd74 | 5969 | struct breakpoint *b; |
1900040c MS |
5970 | |
5971 | ALL_BREAKPOINTS (b) | |
5972 | if (b->type == bp_overlay_event) | |
5973 | { | |
5974 | b->enable_state = bp_disabled; | |
b60e7edf | 5975 | update_global_location_list (0); |
c02f5703 | 5976 | overlay_events_enabled = 0; |
1900040c MS |
5977 | } |
5978 | } | |
5979 | ||
aa7d318d TT |
5980 | /* Set an active std::terminate breakpoint for each std::terminate |
5981 | master breakpoint. */ | |
5982 | void | |
5983 | set_std_terminate_breakpoint (void) | |
5984 | { | |
35df4500 | 5985 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5986 | |
35df4500 | 5987 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5988 | if (b->pspace == current_program_space |
5989 | && b->type == bp_std_terminate_master) | |
5990 | { | |
5991 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5992 | clone->type = bp_std_terminate; | |
5993 | } | |
5994 | } | |
5995 | ||
5996 | /* Delete all the std::terminate breakpoints. */ | |
5997 | void | |
5998 | delete_std_terminate_breakpoint (void) | |
5999 | { | |
35df4500 | 6000 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6001 | |
35df4500 | 6002 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6003 | if (b->type == bp_std_terminate) |
6004 | delete_breakpoint (b); | |
6005 | } | |
6006 | ||
c4093a6a | 6007 | struct breakpoint * |
a6d9a66e | 6008 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6009 | { |
6010 | struct breakpoint *b; | |
c4093a6a | 6011 | |
a6d9a66e | 6012 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 6013 | |
b5de0fa7 | 6014 | b->enable_state = bp_enabled; |
c4093a6a | 6015 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6016 | b->addr_string |
6017 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6018 | |
b60e7edf | 6019 | update_global_location_list_nothrow (1); |
74960c60 | 6020 | |
c4093a6a JM |
6021 | return b; |
6022 | } | |
6023 | ||
6024 | void | |
6025 | remove_thread_event_breakpoints (void) | |
6026 | { | |
35df4500 | 6027 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6028 | |
35df4500 | 6029 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6030 | if (b->type == bp_thread_event |
6031 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6032 | delete_breakpoint (b); |
6033 | } | |
6034 | ||
0101ce28 JJ |
6035 | struct captured_parse_breakpoint_args |
6036 | { | |
6037 | char **arg_p; | |
6038 | struct symtabs_and_lines *sals_p; | |
7efd8fc2 | 6039 | struct linespec_result *canonical_p; |
0101ce28 JJ |
6040 | int *not_found_ptr; |
6041 | }; | |
6042 | ||
6043 | struct lang_and_radix | |
6044 | { | |
6045 | enum language lang; | |
6046 | int radix; | |
6047 | }; | |
6048 | ||
4efc6507 DE |
6049 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6050 | ||
6051 | struct breakpoint * | |
6052 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6053 | { | |
6054 | struct breakpoint *b; | |
6055 | ||
6056 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
6057 | update_global_location_list_nothrow (1); | |
6058 | return b; | |
6059 | } | |
0101ce28 | 6060 | |
03673fc7 PP |
6061 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6062 | ||
6063 | void | |
6064 | remove_jit_event_breakpoints (void) | |
6065 | { | |
6066 | struct breakpoint *b, *b_tmp; | |
6067 | ||
6068 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6069 | if (b->type == bp_jit_event | |
6070 | && b->loc->pspace == current_program_space) | |
6071 | delete_breakpoint (b); | |
6072 | } | |
6073 | ||
cae688ec JJ |
6074 | void |
6075 | remove_solib_event_breakpoints (void) | |
6076 | { | |
35df4500 | 6077 | struct breakpoint *b, *b_tmp; |
cae688ec | 6078 | |
35df4500 | 6079 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6080 | if (b->type == bp_shlib_event |
6081 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6082 | delete_breakpoint (b); |
6083 | } | |
6084 | ||
6085 | struct breakpoint * | |
a6d9a66e | 6086 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6087 | { |
6088 | struct breakpoint *b; | |
6089 | ||
a6d9a66e | 6090 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 6091 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6092 | return b; |
6093 | } | |
6094 | ||
6095 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6096 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6097 | ||
6098 | void | |
cb851954 | 6099 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6100 | { |
876fa593 | 6101 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6102 | |
876fa593 | 6103 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6104 | { |
2bdf28a0 | 6105 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6106 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6107 | |
4a64f543 MS |
6108 | /* We apply the check to all breakpoints, including disabled for |
6109 | those with loc->duplicate set. This is so that when breakpoint | |
6110 | becomes enabled, or the duplicate is removed, gdb will try to | |
6111 | insert all breakpoints. If we don't set shlib_disabled here, | |
6112 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6113 | if (((b->type == bp_breakpoint) |
508ccb1f | 6114 | || (b->type == bp_jit_event) |
1042e4c0 | 6115 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6116 | || (is_tracepoint (b))) |
6c95b8df | 6117 | && loc->pspace == current_program_space |
0d381245 | 6118 | && !loc->shlib_disabled |
a77053c2 | 6119 | #ifdef PC_SOLIB |
0d381245 | 6120 | && PC_SOLIB (loc->address) |
a77053c2 | 6121 | #else |
6c95b8df | 6122 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6123 | #endif |
6124 | ) | |
0d381245 VP |
6125 | { |
6126 | loc->shlib_disabled = 1; | |
6127 | } | |
cae688ec JJ |
6128 | } |
6129 | } | |
6130 | ||
4a64f543 MS |
6131 | /* Disable any breakpoints that are in in an unloaded shared library. |
6132 | Only apply to enabled breakpoints, disabled ones can just stay | |
6133 | disabled. */ | |
84acb35a | 6134 | |
75149521 | 6135 | static void |
84acb35a JJ |
6136 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6137 | { | |
876fa593 | 6138 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6139 | int disabled_shlib_breaks = 0; |
6140 | ||
c86cf029 VP |
6141 | /* SunOS a.out shared libraries are always mapped, so do not |
6142 | disable breakpoints; they will only be reported as unloaded | |
6143 | through clear_solib when GDB discards its shared library | |
6144 | list. See clear_solib for more information. */ | |
6145 | if (exec_bfd != NULL | |
6146 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6147 | return; | |
6148 | ||
876fa593 | 6149 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6150 | { |
2bdf28a0 | 6151 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6152 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6153 | |
0d381245 VP |
6154 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
6155 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 6156 | && solib->pspace == loc->pspace |
e2dd7057 | 6157 | && !loc->shlib_disabled |
508ccb1f TT |
6158 | && (b->type == bp_breakpoint |
6159 | || b->type == bp_jit_event | |
6160 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 6161 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6162 | { |
e2dd7057 PP |
6163 | loc->shlib_disabled = 1; |
6164 | /* At this point, we cannot rely on remove_breakpoint | |
6165 | succeeding so we must mark the breakpoint as not inserted | |
6166 | to prevent future errors occurring in remove_breakpoints. */ | |
6167 | loc->inserted = 0; | |
6168 | if (!disabled_shlib_breaks) | |
6169 | { | |
6170 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6171 | warning (_("Temporarily disabling breakpoints " |
6172 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6173 | solib->so_name); |
84acb35a | 6174 | } |
e2dd7057 | 6175 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6176 | } |
6177 | } | |
84acb35a JJ |
6178 | } |
6179 | ||
ce78b96d JB |
6180 | /* FORK & VFORK catchpoints. */ |
6181 | ||
4a64f543 MS |
6182 | /* Implement the "insert" breakpoint_ops method for fork |
6183 | catchpoints. */ | |
ce78b96d | 6184 | |
77b06cd7 TJB |
6185 | static int |
6186 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6187 | { |
77b06cd7 | 6188 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6189 | } |
6190 | ||
4a64f543 MS |
6191 | /* Implement the "remove" breakpoint_ops method for fork |
6192 | catchpoints. */ | |
ce78b96d JB |
6193 | |
6194 | static int | |
77b06cd7 | 6195 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6196 | { |
6197 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6198 | } | |
6199 | ||
6200 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6201 | catchpoints. */ | |
6202 | ||
6203 | static int | |
6204 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
6205 | { | |
6206 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
6207 | } | |
6208 | ||
4a64f543 MS |
6209 | /* Implement the "print_it" breakpoint_ops method for fork |
6210 | catchpoints. */ | |
ce78b96d JB |
6211 | |
6212 | static enum print_stop_action | |
6213 | print_it_catch_fork (struct breakpoint *b) | |
6214 | { | |
6215 | annotate_catchpoint (b->number); | |
6216 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6217 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6218 | return PRINT_SRC_AND_LOC; | |
6219 | } | |
6220 | ||
4a64f543 MS |
6221 | /* Implement the "print_one" breakpoint_ops method for fork |
6222 | catchpoints. */ | |
ce78b96d JB |
6223 | |
6224 | static void | |
a6d9a66e | 6225 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6226 | { |
79a45b7d TT |
6227 | struct value_print_options opts; |
6228 | ||
6229 | get_user_print_options (&opts); | |
6230 | ||
4a64f543 MS |
6231 | /* Field 4, the address, is omitted (which makes the columns not |
6232 | line up too nicely with the headers, but the effect is relatively | |
6233 | readable). */ | |
79a45b7d | 6234 | if (opts.addressprint) |
ce78b96d JB |
6235 | ui_out_field_skip (uiout, "addr"); |
6236 | annotate_field (5); | |
6237 | ui_out_text (uiout, "fork"); | |
6238 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6239 | { | |
6240 | ui_out_text (uiout, ", process "); | |
6241 | ui_out_field_int (uiout, "what", | |
6242 | ptid_get_pid (b->forked_inferior_pid)); | |
6243 | ui_out_spaces (uiout, 1); | |
6244 | } | |
6245 | } | |
6246 | ||
6247 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6248 | catchpoints. */ | |
6249 | ||
6250 | static void | |
6251 | print_mention_catch_fork (struct breakpoint *b) | |
6252 | { | |
6253 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6254 | } | |
6255 | ||
6149aea9 PA |
6256 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6257 | catchpoints. */ | |
6258 | ||
6259 | static void | |
6260 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6261 | { | |
6262 | fprintf_unfiltered (fp, "catch fork"); | |
6263 | } | |
6264 | ||
ce78b96d JB |
6265 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6266 | ||
6267 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6268 | { | |
6269 | insert_catch_fork, | |
6270 | remove_catch_fork, | |
6271 | breakpoint_hit_catch_fork, | |
e09342b5 | 6272 | NULL, /* resources_needed */ |
ce78b96d JB |
6273 | print_it_catch_fork, |
6274 | print_one_catch_fork, | |
6149aea9 PA |
6275 | print_mention_catch_fork, |
6276 | print_recreate_catch_fork | |
ce78b96d JB |
6277 | }; |
6278 | ||
4a64f543 MS |
6279 | /* Implement the "insert" breakpoint_ops method for vfork |
6280 | catchpoints. */ | |
ce78b96d | 6281 | |
77b06cd7 TJB |
6282 | static int |
6283 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6284 | { |
77b06cd7 | 6285 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6286 | } |
6287 | ||
4a64f543 MS |
6288 | /* Implement the "remove" breakpoint_ops method for vfork |
6289 | catchpoints. */ | |
ce78b96d JB |
6290 | |
6291 | static int | |
77b06cd7 | 6292 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6293 | { |
6294 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6295 | } | |
6296 | ||
6297 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6298 | catchpoints. */ | |
6299 | ||
6300 | static int | |
6301 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
6302 | { | |
6303 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
6304 | } | |
6305 | ||
4a64f543 MS |
6306 | /* Implement the "print_it" breakpoint_ops method for vfork |
6307 | catchpoints. */ | |
ce78b96d JB |
6308 | |
6309 | static enum print_stop_action | |
6310 | print_it_catch_vfork (struct breakpoint *b) | |
6311 | { | |
6312 | annotate_catchpoint (b->number); | |
6313 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6314 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6315 | return PRINT_SRC_AND_LOC; | |
6316 | } | |
6317 | ||
4a64f543 MS |
6318 | /* Implement the "print_one" breakpoint_ops method for vfork |
6319 | catchpoints. */ | |
ce78b96d JB |
6320 | |
6321 | static void | |
a6d9a66e | 6322 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6323 | { |
79a45b7d TT |
6324 | struct value_print_options opts; |
6325 | ||
6326 | get_user_print_options (&opts); | |
4a64f543 MS |
6327 | /* Field 4, the address, is omitted (which makes the columns not |
6328 | line up too nicely with the headers, but the effect is relatively | |
6329 | readable). */ | |
79a45b7d | 6330 | if (opts.addressprint) |
ce78b96d JB |
6331 | ui_out_field_skip (uiout, "addr"); |
6332 | annotate_field (5); | |
6333 | ui_out_text (uiout, "vfork"); | |
6334 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6335 | { | |
6336 | ui_out_text (uiout, ", process "); | |
6337 | ui_out_field_int (uiout, "what", | |
6338 | ptid_get_pid (b->forked_inferior_pid)); | |
6339 | ui_out_spaces (uiout, 1); | |
6340 | } | |
6341 | } | |
6342 | ||
6343 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6344 | catchpoints. */ | |
6345 | ||
6346 | static void | |
6347 | print_mention_catch_vfork (struct breakpoint *b) | |
6348 | { | |
6349 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6350 | } | |
6351 | ||
6149aea9 PA |
6352 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6353 | catchpoints. */ | |
6354 | ||
6355 | static void | |
6356 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6357 | { | |
6358 | fprintf_unfiltered (fp, "catch vfork"); | |
6359 | } | |
6360 | ||
ce78b96d JB |
6361 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6362 | ||
6363 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6364 | { | |
6365 | insert_catch_vfork, | |
6366 | remove_catch_vfork, | |
6367 | breakpoint_hit_catch_vfork, | |
e09342b5 | 6368 | NULL, /* resources_needed */ |
ce78b96d JB |
6369 | print_it_catch_vfork, |
6370 | print_one_catch_vfork, | |
6149aea9 PA |
6371 | print_mention_catch_vfork, |
6372 | print_recreate_catch_vfork | |
ce78b96d JB |
6373 | }; |
6374 | ||
a96d9b2e SDJ |
6375 | /* Implement the "insert" breakpoint_ops method for syscall |
6376 | catchpoints. */ | |
6377 | ||
77b06cd7 TJB |
6378 | static int |
6379 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e SDJ |
6380 | { |
6381 | struct inferior *inf = current_inferior (); | |
6382 | ||
6383 | ++inf->total_syscalls_count; | |
77b06cd7 | 6384 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6385 | ++inf->any_syscall_count; |
6386 | else | |
6387 | { | |
6388 | int i, iter; | |
cc59ec59 | 6389 | |
a96d9b2e | 6390 | for (i = 0; |
77b06cd7 | 6391 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6392 | i++) |
6393 | { | |
6394 | int elem; | |
cc59ec59 | 6395 | |
a96d9b2e SDJ |
6396 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6397 | { | |
6398 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6399 | uintptr_t vec_addr_offset |
6400 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6401 | uintptr_t vec_addr; |
6402 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6403 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6404 | vec_addr_offset; | |
6405 | memset ((void *) vec_addr, 0, | |
6406 | (iter + 1 - old_size) * sizeof (int)); | |
6407 | } | |
6408 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6409 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6410 | } | |
6411 | } | |
6412 | ||
77b06cd7 TJB |
6413 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6414 | inf->total_syscalls_count != 0, | |
6415 | inf->any_syscall_count, | |
6416 | VEC_length (int, inf->syscalls_counts), | |
6417 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6418 | } |
6419 | ||
6420 | /* Implement the "remove" breakpoint_ops method for syscall | |
6421 | catchpoints. */ | |
6422 | ||
6423 | static int | |
77b06cd7 | 6424 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e SDJ |
6425 | { |
6426 | struct inferior *inf = current_inferior (); | |
6427 | ||
6428 | --inf->total_syscalls_count; | |
77b06cd7 | 6429 | if (!bl->owner->syscalls_to_be_caught) |
a96d9b2e SDJ |
6430 | --inf->any_syscall_count; |
6431 | else | |
6432 | { | |
6433 | int i, iter; | |
cc59ec59 | 6434 | |
a96d9b2e | 6435 | for (i = 0; |
77b06cd7 | 6436 | VEC_iterate (int, bl->owner->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6437 | i++) |
6438 | { | |
6439 | int elem; | |
6440 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6441 | /* Shouldn't happen. */ | |
6442 | continue; | |
6443 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6444 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6445 | } | |
6446 | } | |
6447 | ||
6448 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6449 | inf->total_syscalls_count != 0, | |
6450 | inf->any_syscall_count, | |
6451 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6452 | VEC_address (int, |
6453 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6454 | } |
6455 | ||
6456 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6457 | catchpoints. */ | |
6458 | ||
6459 | static int | |
6460 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6461 | { | |
4a64f543 MS |
6462 | /* We must check if we are catching specific syscalls in this |
6463 | breakpoint. If we are, then we must guarantee that the called | |
6464 | syscall is the same syscall we are catching. */ | |
a96d9b2e SDJ |
6465 | int syscall_number = 0; |
6466 | ||
6467 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6468 | return 0; | |
6469 | ||
6470 | /* Now, checking if the syscall is the same. */ | |
6471 | if (b->syscalls_to_be_caught) | |
6472 | { | |
6473 | int i, iter; | |
cc59ec59 | 6474 | |
a96d9b2e SDJ |
6475 | for (i = 0; |
6476 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6477 | i++) | |
6478 | if (syscall_number == iter) | |
6479 | break; | |
6480 | /* Not the same. */ | |
6481 | if (!iter) | |
6482 | return 0; | |
6483 | } | |
6484 | ||
6485 | return 1; | |
6486 | } | |
6487 | ||
6488 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6489 | catchpoints. */ | |
6490 | ||
6491 | static enum print_stop_action | |
6492 | print_it_catch_syscall (struct breakpoint *b) | |
6493 | { | |
6494 | /* These are needed because we want to know in which state a | |
6495 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6496 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6497 | must print "called syscall" or "returned from syscall". */ | |
6498 | ptid_t ptid; | |
6499 | struct target_waitstatus last; | |
6500 | struct syscall s; | |
6501 | struct cleanup *old_chain; | |
6502 | char *syscall_id; | |
6503 | ||
6504 | get_last_target_status (&ptid, &last); | |
6505 | ||
6506 | get_syscall_by_number (last.value.syscall_number, &s); | |
6507 | ||
6508 | annotate_catchpoint (b->number); | |
6509 | ||
6510 | if (s.name == NULL) | |
6511 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6512 | else | |
6513 | syscall_id = xstrprintf ("'%s'", s.name); | |
6514 | ||
6515 | old_chain = make_cleanup (xfree, syscall_id); | |
6516 | ||
6517 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6518 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6519 | b->number, syscall_id); | |
6520 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6521 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6522 | b->number, syscall_id); | |
6523 | ||
6524 | do_cleanups (old_chain); | |
6525 | ||
6526 | return PRINT_SRC_AND_LOC; | |
6527 | } | |
6528 | ||
6529 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6530 | catchpoints. */ | |
6531 | ||
6532 | static void | |
6533 | print_one_catch_syscall (struct breakpoint *b, | |
6534 | struct bp_location **last_loc) | |
6535 | { | |
6536 | struct value_print_options opts; | |
6537 | ||
6538 | get_user_print_options (&opts); | |
4a64f543 MS |
6539 | /* Field 4, the address, is omitted (which makes the columns not |
6540 | line up too nicely with the headers, but the effect is relatively | |
6541 | readable). */ | |
a96d9b2e SDJ |
6542 | if (opts.addressprint) |
6543 | ui_out_field_skip (uiout, "addr"); | |
6544 | annotate_field (5); | |
6545 | ||
6546 | if (b->syscalls_to_be_caught | |
6547 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6548 | ui_out_text (uiout, "syscalls \""); | |
6549 | else | |
6550 | ui_out_text (uiout, "syscall \""); | |
6551 | ||
6552 | if (b->syscalls_to_be_caught) | |
6553 | { | |
6554 | int i, iter; | |
6555 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6556 | |
a96d9b2e SDJ |
6557 | for (i = 0; |
6558 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6559 | i++) | |
6560 | { | |
6561 | char *x = text; | |
6562 | struct syscall s; | |
6563 | get_syscall_by_number (iter, &s); | |
6564 | ||
6565 | if (s.name != NULL) | |
6566 | text = xstrprintf ("%s%s, ", text, s.name); | |
6567 | else | |
6568 | text = xstrprintf ("%s%d, ", text, iter); | |
6569 | ||
6570 | /* We have to xfree the last 'text' (now stored at 'x') | |
6571 | because xstrprintf dinamically allocates new space for it | |
6572 | on every call. */ | |
6573 | xfree (x); | |
6574 | } | |
6575 | /* Remove the last comma. */ | |
6576 | text[strlen (text) - 2] = '\0'; | |
6577 | ui_out_field_string (uiout, "what", text); | |
6578 | } | |
6579 | else | |
6580 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6581 | ui_out_text (uiout, "\" "); | |
6582 | } | |
6583 | ||
6584 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6585 | catchpoints. */ | |
6586 | ||
6587 | static void | |
6588 | print_mention_catch_syscall (struct breakpoint *b) | |
6589 | { | |
6590 | if (b->syscalls_to_be_caught) | |
6591 | { | |
6592 | int i, iter; | |
6593 | ||
6594 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6595 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6596 | else | |
6597 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6598 | ||
6599 | for (i = 0; | |
6600 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6601 | i++) | |
6602 | { | |
6603 | struct syscall s; | |
6604 | get_syscall_by_number (iter, &s); | |
6605 | ||
6606 | if (s.name) | |
6607 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6608 | else | |
6609 | printf_filtered (" %d", s.number); | |
6610 | } | |
6611 | printf_filtered (")"); | |
6612 | } | |
6613 | else | |
6614 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6615 | b->number); | |
6616 | } | |
6617 | ||
6149aea9 PA |
6618 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6619 | catchpoints. */ | |
6620 | ||
6621 | static void | |
6622 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6623 | { | |
6624 | fprintf_unfiltered (fp, "catch syscall"); | |
6625 | ||
6626 | if (b->syscalls_to_be_caught) | |
6627 | { | |
6628 | int i, iter; | |
6629 | ||
6630 | for (i = 0; | |
6631 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6632 | i++) | |
6633 | { | |
6634 | struct syscall s; | |
6635 | ||
6636 | get_syscall_by_number (iter, &s); | |
6637 | if (s.name) | |
6638 | fprintf_unfiltered (fp, " %s", s.name); | |
6639 | else | |
6640 | fprintf_unfiltered (fp, " %d", s.number); | |
6641 | } | |
6642 | } | |
6643 | } | |
6644 | ||
a96d9b2e SDJ |
6645 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6646 | ||
6647 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6648 | { | |
6649 | insert_catch_syscall, | |
6650 | remove_catch_syscall, | |
6651 | breakpoint_hit_catch_syscall, | |
e09342b5 | 6652 | NULL, /* resources_needed */ |
a96d9b2e SDJ |
6653 | print_it_catch_syscall, |
6654 | print_one_catch_syscall, | |
6149aea9 PA |
6655 | print_mention_catch_syscall, |
6656 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6657 | }; |
6658 | ||
6659 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6660 | ||
6661 | static int | |
6662 | syscall_catchpoint_p (struct breakpoint *b) | |
6663 | { | |
6664 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6665 | } | |
6666 | ||
6667 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6668 | but does NOT mention it nor update the global location list. | |
6669 | This is useful if you need to fill more fields in the | |
6670 | struct breakpoint before calling mention. | |
ce78b96d JB |
6671 | |
6672 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6673 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6674 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6675 | to the catchpoint. */ | |
6676 | ||
6677 | static struct breakpoint * | |
a96d9b2e SDJ |
6678 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6679 | char *cond_string, | |
6680 | struct breakpoint_ops *ops) | |
c906108c | 6681 | { |
c5aa993b JM |
6682 | struct symtab_and_line sal; |
6683 | struct breakpoint *b; | |
c5aa993b | 6684 | |
fe39c653 | 6685 | init_sal (&sal); |
6c95b8df | 6686 | sal.pspace = current_program_space; |
c5aa993b | 6687 | |
a6d9a66e | 6688 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6689 | set_breakpoint_count (breakpoint_count + 1); |
6690 | b->number = breakpoint_count; | |
ce78b96d | 6691 | |
1b36a34b | 6692 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6693 | b->thread = -1; |
c906108c | 6694 | b->addr_string = NULL; |
b5de0fa7 EZ |
6695 | b->enable_state = bp_enabled; |
6696 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6697 | b->ops = ops; |
c5aa993b | 6698 | |
a96d9b2e SDJ |
6699 | return b; |
6700 | } | |
6701 | ||
6702 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6703 | ||
6704 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6705 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6706 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6707 | to the catchpoint. */ | |
6708 | ||
6709 | static struct breakpoint * | |
6710 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6711 | char *cond_string, struct breakpoint_ops *ops) | |
6712 | { | |
6713 | struct breakpoint *b = | |
6714 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6715 | ||
c906108c | 6716 | mention (b); |
ce78b96d | 6717 | update_global_location_list (1); |
c906108c | 6718 | |
ce78b96d | 6719 | return b; |
c906108c | 6720 | } |
c5aa993b | 6721 | |
9b70b993 | 6722 | static void |
a6d9a66e UW |
6723 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6724 | int tempflag, char *cond_string, | |
ce78b96d | 6725 | struct breakpoint_ops *ops) |
c906108c | 6726 | { |
a6d9a66e UW |
6727 | struct breakpoint *b |
6728 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6729 | |
6730 | /* FIXME: We should put this information in a breakpoint private data | |
6731 | area. */ | |
6732 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6733 | } |
6734 | ||
fe798b75 JB |
6735 | /* Exec catchpoints. */ |
6736 | ||
77b06cd7 TJB |
6737 | static int |
6738 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6739 | { |
77b06cd7 | 6740 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6741 | } |
c906108c | 6742 | |
fe798b75 | 6743 | static int |
77b06cd7 | 6744 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6745 | { |
6746 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6747 | } | |
c906108c | 6748 | |
fe798b75 JB |
6749 | static int |
6750 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6751 | { | |
6752 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6753 | } | |
c906108c | 6754 | |
fe798b75 JB |
6755 | static enum print_stop_action |
6756 | print_it_catch_exec (struct breakpoint *b) | |
6757 | { | |
6758 | annotate_catchpoint (b->number); | |
6759 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6760 | b->exec_pathname); | |
6761 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6762 | } |
6763 | ||
fe798b75 | 6764 | static void |
a6d9a66e | 6765 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6766 | { |
6767 | struct value_print_options opts; | |
6768 | ||
6769 | get_user_print_options (&opts); | |
6770 | ||
6771 | /* Field 4, the address, is omitted (which makes the columns | |
6772 | not line up too nicely with the headers, but the effect | |
6773 | is relatively readable). */ | |
6774 | if (opts.addressprint) | |
6775 | ui_out_field_skip (uiout, "addr"); | |
6776 | annotate_field (5); | |
6777 | ui_out_text (uiout, "exec"); | |
6778 | if (b->exec_pathname != NULL) | |
6779 | { | |
6780 | ui_out_text (uiout, ", program \""); | |
6781 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6782 | ui_out_text (uiout, "\" "); | |
6783 | } | |
6784 | } | |
6785 | ||
6786 | static void | |
6787 | print_mention_catch_exec (struct breakpoint *b) | |
6788 | { | |
6789 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6790 | } | |
6791 | ||
6149aea9 PA |
6792 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6793 | catchpoints. */ | |
6794 | ||
6795 | static void | |
6796 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6797 | { | |
6798 | fprintf_unfiltered (fp, "catch exec"); | |
6799 | } | |
6800 | ||
fe798b75 JB |
6801 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6802 | { | |
6803 | insert_catch_exec, | |
6804 | remove_catch_exec, | |
6805 | breakpoint_hit_catch_exec, | |
e09342b5 | 6806 | NULL, /* resources_needed */ |
fe798b75 JB |
6807 | print_it_catch_exec, |
6808 | print_one_catch_exec, | |
6149aea9 PA |
6809 | print_mention_catch_exec, |
6810 | print_recreate_catch_exec | |
fe798b75 JB |
6811 | }; |
6812 | ||
a96d9b2e SDJ |
6813 | static void |
6814 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6815 | struct breakpoint_ops *ops) | |
6816 | { | |
6817 | struct gdbarch *gdbarch = get_current_arch (); | |
6818 | struct breakpoint *b = | |
6819 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6820 | ||
6821 | b->syscalls_to_be_caught = filter; | |
6822 | ||
6823 | /* Now, we have to mention the breakpoint and update the global | |
6824 | location list. */ | |
6825 | mention (b); | |
6826 | update_global_location_list (1); | |
6827 | } | |
6828 | ||
c906108c | 6829 | static int |
fba45db2 | 6830 | hw_breakpoint_used_count (void) |
c906108c | 6831 | { |
52f0bd74 | 6832 | struct breakpoint *b; |
c906108c SS |
6833 | int i = 0; |
6834 | ||
6835 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6836 | { |
d6b74ac4 | 6837 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6838 | i++; |
6839 | } | |
c906108c SS |
6840 | |
6841 | return i; | |
6842 | } | |
6843 | ||
6844 | static int | |
fba45db2 | 6845 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6846 | { |
c906108c | 6847 | int i = 0; |
e09342b5 TJB |
6848 | struct breakpoint *b; |
6849 | struct bp_location *bl; | |
c906108c SS |
6850 | |
6851 | *other_type_used = 0; | |
6852 | ALL_BREAKPOINTS (b) | |
e09342b5 TJB |
6853 | { |
6854 | if (!breakpoint_enabled (b)) | |
6855 | continue; | |
6856 | ||
c5aa993b | 6857 | if (b->type == type) |
e09342b5 TJB |
6858 | for (bl = b->loc; bl; bl = bl->next) |
6859 | { | |
6860 | /* Special types of hardware watchpoints may use more than | |
6861 | one register. */ | |
6862 | if (b->ops && b->ops->resources_needed) | |
6863 | i += b->ops->resources_needed (bl); | |
6864 | else | |
6865 | i++; | |
6866 | } | |
cc60f2e3 | 6867 | else if (is_hardware_watchpoint (b)) |
c5aa993b | 6868 | *other_type_used = 1; |
e09342b5 TJB |
6869 | } |
6870 | ||
c906108c SS |
6871 | return i; |
6872 | } | |
6873 | ||
c906108c | 6874 | void |
fba45db2 | 6875 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6876 | { |
c5aa993b | 6877 | struct breakpoint *b; |
c906108c SS |
6878 | |
6879 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6880 | { |
cc60f2e3 | 6881 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6882 | { |
b5de0fa7 | 6883 | b->enable_state = bp_call_disabled; |
b60e7edf | 6884 | update_global_location_list (0); |
c5aa993b JM |
6885 | } |
6886 | } | |
c906108c SS |
6887 | } |
6888 | ||
6889 | void | |
fba45db2 | 6890 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6891 | { |
c5aa993b | 6892 | struct breakpoint *b; |
c906108c SS |
6893 | |
6894 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6895 | { |
cc60f2e3 | 6896 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6897 | { |
b5de0fa7 | 6898 | b->enable_state = bp_enabled; |
b60e7edf | 6899 | update_global_location_list (1); |
c5aa993b JM |
6900 | } |
6901 | } | |
c906108c SS |
6902 | } |
6903 | ||
8bea4e01 UW |
6904 | void |
6905 | disable_breakpoints_before_startup (void) | |
6906 | { | |
6907 | struct breakpoint *b; | |
6908 | int found = 0; | |
6909 | ||
6910 | ALL_BREAKPOINTS (b) | |
6911 | { | |
6c95b8df PA |
6912 | if (b->pspace != current_program_space) |
6913 | continue; | |
6914 | ||
8bea4e01 UW |
6915 | if ((b->type == bp_breakpoint |
6916 | || b->type == bp_hardware_breakpoint) | |
6917 | && breakpoint_enabled (b)) | |
6918 | { | |
6919 | b->enable_state = bp_startup_disabled; | |
6920 | found = 1; | |
6921 | } | |
6922 | } | |
6923 | ||
6924 | if (found) | |
6925 | update_global_location_list (0); | |
6926 | ||
6c95b8df | 6927 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6928 | } |
6929 | ||
6930 | void | |
6931 | enable_breakpoints_after_startup (void) | |
6932 | { | |
6933 | struct breakpoint *b; | |
6934 | int found = 0; | |
6935 | ||
6c95b8df | 6936 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6937 | |
6938 | ALL_BREAKPOINTS (b) | |
6939 | { | |
6c95b8df PA |
6940 | if (b->pspace != current_program_space) |
6941 | continue; | |
6942 | ||
8bea4e01 UW |
6943 | if ((b->type == bp_breakpoint |
6944 | || b->type == bp_hardware_breakpoint) | |
6945 | && b->enable_state == bp_startup_disabled) | |
6946 | { | |
6947 | b->enable_state = bp_enabled; | |
6948 | found = 1; | |
6949 | } | |
6950 | } | |
6951 | ||
6952 | if (found) | |
6953 | breakpoint_re_set (); | |
6954 | } | |
6955 | ||
c906108c SS |
6956 | |
6957 | /* Set a breakpoint that will evaporate an end of command | |
6958 | at address specified by SAL. | |
6959 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6960 | ||
6961 | struct breakpoint * | |
a6d9a66e UW |
6962 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6963 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6964 | { |
52f0bd74 | 6965 | struct breakpoint *b; |
edb3359d DJ |
6966 | |
6967 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6968 | one. */ | |
6969 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6970 | ||
a6d9a66e | 6971 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6972 | b->enable_state = bp_enabled; |
6973 | b->disposition = disp_donttouch; | |
818dd999 | 6974 | b->frame_id = frame_id; |
c906108c | 6975 | |
4a64f543 MS |
6976 | /* If we're debugging a multi-threaded program, then we want |
6977 | momentary breakpoints to be active in only a single thread of | |
6978 | control. */ | |
39f77062 KB |
6979 | if (in_thread_list (inferior_ptid)) |
6980 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6981 | |
b60e7edf | 6982 | update_global_location_list_nothrow (1); |
74960c60 | 6983 | |
c906108c SS |
6984 | return b; |
6985 | } | |
611c83ae | 6986 | |
e58b0e63 PA |
6987 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6988 | ORIG is NULL. */ | |
6989 | ||
6990 | struct breakpoint * | |
6991 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6992 | { | |
6993 | struct breakpoint *copy; | |
6994 | ||
6995 | /* If there's nothing to clone, then return nothing. */ | |
6996 | if (orig == NULL) | |
6997 | return NULL; | |
6998 | ||
a6d9a66e | 6999 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 | 7000 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7001 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7002 | |
a6d9a66e | 7003 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7004 | copy->loc->requested_address = orig->loc->requested_address; |
7005 | copy->loc->address = orig->loc->address; | |
7006 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7007 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
7008 | |
7009 | if (orig->source_file == NULL) | |
7010 | copy->source_file = NULL; | |
7011 | else | |
7012 | copy->source_file = xstrdup (orig->source_file); | |
7013 | ||
7014 | copy->line_number = orig->line_number; | |
7015 | copy->frame_id = orig->frame_id; | |
7016 | copy->thread = orig->thread; | |
6c95b8df | 7017 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7018 | |
7019 | copy->enable_state = bp_enabled; | |
7020 | copy->disposition = disp_donttouch; | |
7021 | copy->number = internal_breakpoint_number--; | |
7022 | ||
7023 | update_global_location_list_nothrow (0); | |
7024 | return copy; | |
7025 | } | |
7026 | ||
611c83ae | 7027 | struct breakpoint * |
a6d9a66e UW |
7028 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7029 | enum bptype type) | |
611c83ae PA |
7030 | { |
7031 | struct symtab_and_line sal; | |
7032 | ||
7033 | sal = find_pc_line (pc, 0); | |
7034 | sal.pc = pc; | |
7035 | sal.section = find_pc_overlay (pc); | |
7036 | sal.explicit_pc = 1; | |
7037 | ||
a6d9a66e | 7038 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7039 | } |
c906108c | 7040 | \f |
c5aa993b | 7041 | |
c906108c SS |
7042 | /* Tell the user we have just set a breakpoint B. */ |
7043 | ||
7044 | static void | |
fba45db2 | 7045 | mention (struct breakpoint *b) |
c906108c SS |
7046 | { |
7047 | int say_where = 0; | |
fa8a61dc | 7048 | struct cleanup *ui_out_chain; |
79a45b7d TT |
7049 | struct value_print_options opts; |
7050 | ||
7051 | get_user_print_options (&opts); | |
8b93c638 | 7052 | |
9a4105ab AC |
7053 | /* FIXME: This is misplaced; mention() is called by things (like |
7054 | hitting a watchpoint) other than breakpoint creation. It should | |
7055 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 7056 | random calls to breakpoint_changed with this hook. */ |
383f836e | 7057 | observer_notify_breakpoint_created (b->number); |
c906108c | 7058 | |
3086aeae DJ |
7059 | if (b->ops != NULL && b->ops->print_mention != NULL) |
7060 | b->ops->print_mention (b); | |
7061 | else | |
7062 | switch (b->type) | |
7063 | { | |
7064 | case bp_none: | |
3e43a32a MS |
7065 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), |
7066 | b->number); | |
3086aeae DJ |
7067 | break; |
7068 | case bp_watchpoint: | |
7069 | ui_out_text (uiout, "Watchpoint "); | |
7070 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7071 | ui_out_field_int (uiout, "number", b->number); | |
7072 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7073 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7074 | do_cleanups (ui_out_chain); |
7075 | break; | |
7076 | case bp_hardware_watchpoint: | |
7077 | ui_out_text (uiout, "Hardware watchpoint "); | |
7078 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
7079 | ui_out_field_int (uiout, "number", b->number); | |
7080 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7081 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7082 | do_cleanups (ui_out_chain); |
7083 | break; | |
7084 | case bp_read_watchpoint: | |
7085 | ui_out_text (uiout, "Hardware read watchpoint "); | |
7086 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
7087 | ui_out_field_int (uiout, "number", b->number); | |
7088 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7089 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7090 | do_cleanups (ui_out_chain); |
7091 | break; | |
7092 | case bp_access_watchpoint: | |
7093 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
7094 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
7095 | ui_out_field_int (uiout, "number", b->number); | |
7096 | ui_out_text (uiout, ": "); | |
fa8a61dc | 7097 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
7098 | do_cleanups (ui_out_chain); |
7099 | break; | |
7100 | case bp_breakpoint: | |
0e30163f | 7101 | case bp_gnu_ifunc_resolver: |
3086aeae DJ |
7102 | if (ui_out_is_mi_like_p (uiout)) |
7103 | { | |
7104 | say_where = 0; | |
7105 | break; | |
7106 | } | |
2cec12e5 AR |
7107 | if (b->disposition == disp_del) |
7108 | printf_filtered (_("Temporary breakpoint")); | |
7109 | else | |
7110 | printf_filtered (_("Breakpoint")); | |
7111 | printf_filtered (_(" %d"), b->number); | |
0e30163f JK |
7112 | if (b->type == bp_gnu_ifunc_resolver) |
7113 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
3086aeae DJ |
7114 | say_where = 1; |
7115 | break; | |
7116 | case bp_hardware_breakpoint: | |
7117 | if (ui_out_is_mi_like_p (uiout)) | |
7118 | { | |
7119 | say_where = 0; | |
7120 | break; | |
7121 | } | |
a3f17187 | 7122 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
7123 | say_where = 1; |
7124 | break; | |
1042e4c0 SS |
7125 | case bp_tracepoint: |
7126 | if (ui_out_is_mi_like_p (uiout)) | |
7127 | { | |
7128 | say_where = 0; | |
7129 | break; | |
7130 | } | |
7131 | printf_filtered (_("Tracepoint")); | |
7132 | printf_filtered (_(" %d"), b->number); | |
7133 | say_where = 1; | |
7134 | break; | |
7a697b8d SS |
7135 | case bp_fast_tracepoint: |
7136 | if (ui_out_is_mi_like_p (uiout)) | |
7137 | { | |
7138 | say_where = 0; | |
7139 | break; | |
7140 | } | |
7141 | printf_filtered (_("Fast tracepoint")); | |
7142 | printf_filtered (_(" %d"), b->number); | |
7143 | say_where = 1; | |
7144 | break; | |
0fb4aa4b PA |
7145 | case bp_static_tracepoint: |
7146 | if (ui_out_is_mi_like_p (uiout)) | |
7147 | { | |
7148 | say_where = 0; | |
7149 | break; | |
7150 | } | |
7151 | printf_filtered (_("Static tracepoint")); | |
7152 | printf_filtered (_(" %d"), b->number); | |
7153 | say_where = 1; | |
7154 | break; | |
3086aeae DJ |
7155 | |
7156 | case bp_until: | |
7157 | case bp_finish: | |
7158 | case bp_longjmp: | |
7159 | case bp_longjmp_resume: | |
186c406b TT |
7160 | case bp_exception: |
7161 | case bp_exception_resume: | |
3086aeae | 7162 | case bp_step_resume: |
3086aeae | 7163 | case bp_call_dummy: |
aa7d318d | 7164 | case bp_std_terminate: |
3086aeae DJ |
7165 | case bp_watchpoint_scope: |
7166 | case bp_shlib_event: | |
7167 | case bp_thread_event: | |
7168 | case bp_overlay_event: | |
4efc6507 | 7169 | case bp_jit_event: |
0fd8e87f | 7170 | case bp_longjmp_master: |
aa7d318d | 7171 | case bp_std_terminate_master: |
186c406b | 7172 | case bp_exception_master: |
0e30163f | 7173 | case bp_gnu_ifunc_resolver_return: |
3086aeae DJ |
7174 | break; |
7175 | } | |
c906108c | 7176 | |
c906108c SS |
7177 | if (say_where) |
7178 | { | |
a3f17187 AC |
7179 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
7180 | single string. */ | |
0d381245 | 7181 | if (b->loc == NULL) |
c906108c | 7182 | { |
a3f17187 | 7183 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
7184 | } |
7185 | else | |
7186 | { | |
79a45b7d | 7187 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
7188 | { |
7189 | printf_filtered (" at "); | |
5af949e3 UW |
7190 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
7191 | gdb_stdout); | |
0101ce28 JJ |
7192 | } |
7193 | if (b->source_file) | |
7194 | printf_filtered (": file %s, line %d.", | |
7195 | b->source_file, b->line_number); | |
0d381245 VP |
7196 | |
7197 | if (b->loc->next) | |
7198 | { | |
7199 | struct bp_location *loc = b->loc; | |
7200 | int n = 0; | |
7201 | for (; loc; loc = loc->next) | |
7202 | ++n; | |
7203 | printf_filtered (" (%d locations)", n); | |
7204 | } | |
7205 | ||
c906108c | 7206 | } |
c906108c | 7207 | } |
9dc5e2a9 | 7208 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 7209 | return; |
c906108c SS |
7210 | printf_filtered ("\n"); |
7211 | } | |
c906108c | 7212 | \f |
c5aa993b | 7213 | |
0d381245 | 7214 | static struct bp_location * |
39d61571 | 7215 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7216 | const struct symtab_and_line *sal) |
7217 | { | |
7218 | struct bp_location *loc, **tmp; | |
7219 | ||
39d61571 | 7220 | loc = allocate_bp_location (b); |
0d381245 VP |
7221 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7222 | ; | |
7223 | *tmp = loc; | |
a6d9a66e UW |
7224 | loc->gdbarch = get_sal_arch (*sal); |
7225 | if (!loc->gdbarch) | |
7226 | loc->gdbarch = b->gdbarch; | |
0d381245 | 7227 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7228 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7229 | loc->requested_address, b->type); | |
6c95b8df PA |
7230 | loc->pspace = sal->pspace; |
7231 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7232 | loc->section = sal->section; |
7233 | ||
0e30163f JK |
7234 | set_breakpoint_location_function (loc, |
7235 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7236 | return loc; |
7237 | } | |
514f746b AR |
7238 | \f |
7239 | ||
7240 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7241 | return 0 otherwise. */ | |
7242 | ||
7243 | static int | |
7244 | bp_loc_is_permanent (struct bp_location *loc) | |
7245 | { | |
7246 | int len; | |
7247 | CORE_ADDR addr; | |
7248 | const gdb_byte *brk; | |
7249 | gdb_byte *target_mem; | |
939c61fa JK |
7250 | struct cleanup *cleanup; |
7251 | int retval = 0; | |
514f746b AR |
7252 | |
7253 | gdb_assert (loc != NULL); | |
7254 | ||
7255 | addr = loc->address; | |
a6d9a66e | 7256 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7257 | |
939c61fa JK |
7258 | /* Software breakpoints unsupported? */ |
7259 | if (brk == NULL) | |
7260 | return 0; | |
7261 | ||
514f746b AR |
7262 | target_mem = alloca (len); |
7263 | ||
939c61fa JK |
7264 | /* Enable the automatic memory restoration from breakpoints while |
7265 | we read the memory. Otherwise we could say about our temporary | |
7266 | breakpoints they are permanent. */ | |
6c95b8df PA |
7267 | cleanup = save_current_space_and_thread (); |
7268 | ||
7269 | switch_to_program_space_and_thread (loc->pspace); | |
7270 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7271 | |
514f746b AR |
7272 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7273 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7274 | retval = 1; |
514f746b | 7275 | |
939c61fa JK |
7276 | do_cleanups (cleanup); |
7277 | ||
7278 | return retval; | |
514f746b AR |
7279 | } |
7280 | ||
7281 | ||
c3f6f71d | 7282 | |
018d34a4 VP |
7283 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7284 | as textual description of the location, and COND_STRING | |
db107f19 | 7285 | as condition expression. */ |
018d34a4 VP |
7286 | |
7287 | static void | |
8cdf0e15 VP |
7288 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7289 | struct symtabs_and_lines sals, char *addr_string, | |
7290 | char *cond_string, | |
7291 | enum bptype type, enum bpdisp disposition, | |
7292 | int thread, int task, int ignore_count, | |
84f4c1fe | 7293 | struct breakpoint_ops *ops, int from_tty, |
56435ebe | 7294 | int enabled, int internal, int display_canonical) |
018d34a4 | 7295 | { |
0d381245 VP |
7296 | struct breakpoint *b = NULL; |
7297 | int i; | |
018d34a4 VP |
7298 | |
7299 | if (type == bp_hardware_breakpoint) | |
7300 | { | |
7301 | int i = hw_breakpoint_used_count (); | |
7302 | int target_resources_ok = | |
d92524f1 | 7303 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7304 | i + 1, 0); |
7305 | if (target_resources_ok == 0) | |
7306 | error (_("No hardware breakpoint support in the target.")); | |
7307 | else if (target_resources_ok < 0) | |
7308 | error (_("Hardware breakpoints used exceeds limit.")); | |
7309 | } | |
7310 | ||
6c95b8df PA |
7311 | gdb_assert (sals.nelts > 0); |
7312 | ||
0d381245 VP |
7313 | for (i = 0; i < sals.nelts; ++i) |
7314 | { | |
7315 | struct symtab_and_line sal = sals.sals[i]; | |
7316 | struct bp_location *loc; | |
7317 | ||
7318 | if (from_tty) | |
5af949e3 UW |
7319 | { |
7320 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7321 | if (!loc_gdbarch) | |
7322 | loc_gdbarch = gdbarch; | |
7323 | ||
7324 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7325 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7326 | } |
0d381245 VP |
7327 | |
7328 | if (i == 0) | |
7329 | { | |
a6d9a66e | 7330 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7331 | set_breakpoint_number (internal, b); |
0d381245 | 7332 | b->thread = thread; |
4a306c9a | 7333 | b->task = task; |
018d34a4 | 7334 | |
0d381245 VP |
7335 | b->cond_string = cond_string; |
7336 | b->ignore_count = ignore_count; | |
41447f92 | 7337 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7338 | b->disposition = disposition; |
6c95b8df PA |
7339 | b->pspace = sals.sals[0].pspace; |
7340 | ||
0fb4aa4b PA |
7341 | if (type == bp_static_tracepoint) |
7342 | { | |
7343 | struct static_tracepoint_marker marker; | |
7344 | ||
7345 | if (is_marker_spec (addr_string)) | |
7346 | { | |
7347 | /* We already know the marker exists, otherwise, we | |
7348 | wouldn't see a sal for it. */ | |
7349 | char *p = &addr_string[3]; | |
7350 | char *endp; | |
7351 | char *marker_str; | |
7352 | int i; | |
7353 | ||
e9cafbcc | 7354 | p = skip_spaces (p); |
0fb4aa4b | 7355 | |
e9cafbcc | 7356 | endp = skip_to_space (p); |
0fb4aa4b PA |
7357 | |
7358 | marker_str = savestring (p, endp - p); | |
7359 | b->static_trace_marker_id = marker_str; | |
7360 | ||
3e43a32a MS |
7361 | printf_filtered (_("Probed static tracepoint " |
7362 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7363 | b->static_trace_marker_id); |
7364 | } | |
7365 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7366 | { | |
7367 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7368 | release_static_tracepoint_marker (&marker); | |
7369 | ||
3e43a32a MS |
7370 | printf_filtered (_("Probed static tracepoint " |
7371 | "marker \"%s\"\n"), | |
0fb4aa4b PA |
7372 | b->static_trace_marker_id); |
7373 | } | |
7374 | else | |
3e43a32a MS |
7375 | warning (_("Couldn't determine the static " |
7376 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7377 | } |
7378 | ||
6c95b8df | 7379 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7380 | && (b->type == bp_breakpoint |
7381 | || b->type == bp_hardware_breakpoint)) | |
7382 | b->enable_state = bp_startup_disabled; | |
7383 | ||
0d381245 VP |
7384 | loc = b->loc; |
7385 | } | |
7386 | else | |
018d34a4 | 7387 | { |
39d61571 | 7388 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7389 | } |
7390 | ||
514f746b AR |
7391 | if (bp_loc_is_permanent (loc)) |
7392 | make_breakpoint_permanent (b); | |
7393 | ||
0d381245 VP |
7394 | if (b->cond_string) |
7395 | { | |
7396 | char *arg = b->cond_string; | |
d32a6982 | 7397 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7398 | if (*arg) |
db107f19 | 7399 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7400 | } |
0d381245 | 7401 | } |
018d34a4 | 7402 | |
56435ebe | 7403 | b->display_canonical = display_canonical; |
018d34a4 VP |
7404 | if (addr_string) |
7405 | b->addr_string = addr_string; | |
7406 | else | |
7407 | /* addr_string has to be used or breakpoint_re_set will delete | |
7408 | me. */ | |
5af949e3 UW |
7409 | b->addr_string |
7410 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7411 | |
604133b5 | 7412 | b->ops = ops; |
84f4c1fe PM |
7413 | if (internal) |
7414 | /* Do not mention breakpoints with a negative number, but do | |
7415 | notify observers. */ | |
7416 | observer_notify_breakpoint_created (b->number); | |
7417 | else | |
7418 | mention (b); | |
018d34a4 VP |
7419 | } |
7420 | ||
ed0616c6 VP |
7421 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7422 | elements to fill the void space. */ | |
2c0b251b PA |
7423 | static void |
7424 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7425 | { |
7426 | int i = index_to_remove+1; | |
7427 | int last_index = sal->nelts-1; | |
7428 | ||
7429 | for (;i <= last_index; ++i) | |
7430 | sal->sals[i-1] = sal->sals[i]; | |
7431 | ||
7432 | --(sal->nelts); | |
7433 | } | |
7434 | ||
6c95b8df PA |
7435 | /* If appropriate, obtains all sals that correspond to the same file |
7436 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7437 | will want to set a breakpoint at foo.c:line, and not really care | |
7438 | about program spaces. This is done only if SAL does not have | |
7439 | explicit PC and has line and file information. If we got just a | |
7440 | single expanded sal, return the original. | |
ed0616c6 | 7441 | |
6c95b8df PA |
7442 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7443 | which the name of enclosing function is different from SAL. This | |
7444 | makes sure that if we have breakpoint originally set in template | |
7445 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7446 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7447 | |
2c0b251b | 7448 | static struct symtabs_and_lines |
ed0616c6 VP |
7449 | expand_line_sal_maybe (struct symtab_and_line sal) |
7450 | { | |
7451 | struct symtabs_and_lines expanded; | |
7452 | CORE_ADDR original_pc = sal.pc; | |
7453 | char *original_function = NULL; | |
7454 | int found; | |
7455 | int i; | |
6c95b8df | 7456 | struct cleanup *old_chain; |
ed0616c6 VP |
7457 | |
7458 | /* If we have explicit pc, don't expand. | |
7459 | If we have no line number, we can't expand. */ | |
7460 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7461 | { | |
7462 | expanded.nelts = 1; | |
7463 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7464 | expanded.sals[0] = sal; | |
7465 | return expanded; | |
7466 | } | |
7467 | ||
7468 | sal.pc = 0; | |
6c95b8df PA |
7469 | |
7470 | old_chain = save_current_space_and_thread (); | |
7471 | ||
7472 | switch_to_program_space_and_thread (sal.pspace); | |
7473 | ||
ed0616c6 | 7474 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7475 | |
7476 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7477 | expanded = expand_line_sal (sal); |
6c95b8df | 7478 | |
ed0616c6 VP |
7479 | if (expanded.nelts == 1) |
7480 | { | |
3dba1c98 JB |
7481 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7482 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7483 | xfree (expanded.sals); |
7484 | expanded.nelts = 1; | |
7485 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7486 | sal.pc = original_pc; | |
7487 | expanded.sals[0] = sal; | |
3dba1c98 | 7488 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7489 | do_cleanups (old_chain); |
ed0616c6 VP |
7490 | return expanded; |
7491 | } | |
7492 | ||
7493 | if (!sal.explicit_line) | |
7494 | { | |
7495 | CORE_ADDR func_addr, func_end; | |
7496 | for (i = 0; i < expanded.nelts; ++i) | |
7497 | { | |
7498 | CORE_ADDR pc = expanded.sals[i].pc; | |
7499 | char *this_function; | |
6c95b8df PA |
7500 | |
7501 | /* We need to switch threads as well since we're about to | |
7502 | read memory. */ | |
7503 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7504 | ||
ed0616c6 VP |
7505 | if (find_pc_partial_function (pc, &this_function, |
7506 | &func_addr, &func_end)) | |
7507 | { | |
059fb39f PM |
7508 | if (this_function |
7509 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7510 | { |
7511 | remove_sal (&expanded, i); | |
7512 | --i; | |
7513 | } | |
ed0616c6 VP |
7514 | } |
7515 | } | |
7516 | } | |
059acae7 UW |
7517 | |
7518 | /* Skip the function prologue if necessary. */ | |
7519 | for (i = 0; i < expanded.nelts; ++i) | |
7520 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7521 | |
6c95b8df PA |
7522 | do_cleanups (old_chain); |
7523 | ||
ed0616c6 VP |
7524 | if (expanded.nelts <= 1) |
7525 | { | |
4a64f543 MS |
7526 | /* This is un ugly workaround. If we get zero expanded sals |
7527 | then something is really wrong. Fix that by returning the | |
7528 | original sal. */ | |
7529 | ||
ed0616c6 VP |
7530 | xfree (expanded.sals); |
7531 | expanded.nelts = 1; | |
7532 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7533 | sal.pc = original_pc; | |
7534 | expanded.sals[0] = sal; | |
7535 | return expanded; | |
7536 | } | |
7537 | ||
7538 | if (original_pc) | |
7539 | { | |
7540 | found = 0; | |
7541 | for (i = 0; i < expanded.nelts; ++i) | |
7542 | if (expanded.sals[i].pc == original_pc) | |
7543 | { | |
7544 | found = 1; | |
7545 | break; | |
7546 | } | |
7547 | gdb_assert (found); | |
7548 | } | |
7549 | ||
7550 | return expanded; | |
7551 | } | |
7552 | ||
018d34a4 VP |
7553 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7554 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7555 | value. COND_STRING, if not NULL, specified the condition to be | |
7556 | used for all breakpoints. Essentially the only case where | |
7557 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7558 | function. In that case, it's still not possible to specify | |
7559 | separate conditions for different overloaded functions, so | |
7560 | we take just a single condition string. | |
7561 | ||
c3f6f71d | 7562 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7563 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7564 | array contents). If the function fails (error() is called), the |
7565 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7566 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7567 | |
7568 | static void | |
8cdf0e15 | 7569 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 TT |
7570 | struct symtabs_and_lines sals, |
7571 | struct linespec_result *canonical, | |
8cdf0e15 VP |
7572 | char *cond_string, |
7573 | enum bptype type, enum bpdisp disposition, | |
7574 | int thread, int task, int ignore_count, | |
7575 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7576 | int enabled, int internal) |
c906108c | 7577 | { |
018d34a4 | 7578 | int i; |
cc59ec59 | 7579 | |
018d34a4 | 7580 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7581 | { |
ed0616c6 VP |
7582 | struct symtabs_and_lines expanded = |
7583 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7584 | |
7efd8fc2 | 7585 | create_breakpoint_sal (gdbarch, expanded, canonical->canonical[i], |
8cdf0e15 | 7586 | cond_string, type, disposition, |
84f4c1fe | 7587 | thread, task, ignore_count, ops, |
56435ebe TT |
7588 | from_tty, enabled, internal, |
7589 | canonical->special_display); | |
c3f6f71d | 7590 | } |
c3f6f71d | 7591 | } |
c906108c | 7592 | |
9998af43 | 7593 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7594 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7595 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7596 | address strings. ADDRESS points to the end of the SAL. |
7597 | ||
7598 | The array and the line spec strings are allocated on the heap, it is | |
7599 | the caller's responsibility to free them. */ | |
c906108c | 7600 | |
b9362cc7 | 7601 | static void |
c3f6f71d JM |
7602 | parse_breakpoint_sals (char **address, |
7603 | struct symtabs_and_lines *sals, | |
7efd8fc2 | 7604 | struct linespec_result *canonical, |
0101ce28 | 7605 | int *not_found_ptr) |
c3f6f71d JM |
7606 | { |
7607 | char *addr_start = *address; | |
cc59ec59 | 7608 | |
c3f6f71d | 7609 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7610 | breakpoint. */ |
c3f6f71d JM |
7611 | if ((*address) == NULL |
7612 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7613 | { |
7614 | if (default_breakpoint_valid) | |
7615 | { | |
c3f6f71d | 7616 | struct symtab_and_line sal; |
cc59ec59 | 7617 | |
4a64f543 | 7618 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7619 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7620 | xmalloc (sizeof (struct symtab_and_line)); |
7621 | sal.pc = default_breakpoint_address; | |
7622 | sal.line = default_breakpoint_line; | |
7623 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7624 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7625 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7626 | |
4a64f543 MS |
7627 | /* "break" without arguments is equivalent to "break *PC" |
7628 | where PC is the default_breakpoint_address. So make sure | |
7629 | to set sal.explicit_pc to prevent GDB from trying to | |
7630 | expand the list of sals to include all other instances | |
7631 | with the same symtab and line. */ | |
00903456 JK |
7632 | sal.explicit_pc = 1; |
7633 | ||
c3f6f71d JM |
7634 | sals->sals[0] = sal; |
7635 | sals->nelts = 1; | |
c906108c SS |
7636 | } |
7637 | else | |
8a3fe4f8 | 7638 | error (_("No default breakpoint address now.")); |
c906108c SS |
7639 | } |
7640 | else | |
7641 | { | |
c906108c | 7642 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7643 | current_source_symtab (which is decode_line_1's default). |
7644 | This should produce the results we want almost all of the | |
7645 | time while leaving default_breakpoint_* alone. | |
7646 | ||
1aeae86e AF |
7647 | ObjC: However, don't match an Objective-C method name which |
7648 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7649 | |
c214a6fd | 7650 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7651 | |
c906108c | 7652 | if (default_breakpoint_valid |
0378c332 | 7653 | && (!cursal.symtab |
1aeae86e AF |
7654 | || ((strchr ("+-", (*address)[0]) != NULL) |
7655 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7656 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
7efd8fc2 | 7657 | default_breakpoint_line, canonical, |
0101ce28 | 7658 | not_found_ptr); |
c906108c | 7659 | else |
0101ce28 | 7660 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7efd8fc2 | 7661 | canonical, not_found_ptr); |
c906108c | 7662 | } |
4a64f543 | 7663 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7efd8fc2 TT |
7664 | if (sals->nelts > 0 && canonical->canonical == NULL) |
7665 | canonical->canonical = xcalloc (sals->nelts, sizeof (char **)); | |
c3f6f71d | 7666 | if (addr_start != (*address)) |
c906108c | 7667 | { |
c3f6f71d | 7668 | int i; |
cc59ec59 | 7669 | |
c3f6f71d | 7670 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7671 | { |
4a64f543 | 7672 | /* Add the string if not present. */ |
7efd8fc2 TT |
7673 | if (canonical->canonical[i] == NULL) |
7674 | canonical->canonical[i] = savestring (addr_start, | |
7675 | (*address) - addr_start); | |
c906108c SS |
7676 | } |
7677 | } | |
c3f6f71d | 7678 | } |
c906108c | 7679 | |
c906108c | 7680 | |
c3f6f71d | 7681 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7682 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7683 | |
b9362cc7 | 7684 | static void |
23e7acfb | 7685 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7686 | { |
7687 | int i; | |
cc59ec59 | 7688 | |
c3f6f71d | 7689 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7690 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7691 | } |
7692 | ||
7a697b8d SS |
7693 | /* Fast tracepoints may have restrictions on valid locations. For |
7694 | instance, a fast tracepoint using a jump instead of a trap will | |
7695 | likely have to overwrite more bytes than a trap would, and so can | |
7696 | only be placed where the instruction is longer than the jump, or a | |
7697 | multi-instruction sequence does not have a jump into the middle of | |
7698 | it, etc. */ | |
7699 | ||
7700 | static void | |
7701 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7702 | struct symtabs_and_lines *sals) | |
7703 | { | |
7704 | int i, rslt; | |
7705 | struct symtab_and_line *sal; | |
7706 | char *msg; | |
7707 | struct cleanup *old_chain; | |
7708 | ||
7709 | for (i = 0; i < sals->nelts; i++) | |
7710 | { | |
7711 | sal = &sals->sals[i]; | |
7712 | ||
7713 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7714 | NULL, &msg); | |
7715 | old_chain = make_cleanup (xfree, msg); | |
7716 | ||
7717 | if (!rslt) | |
7718 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7719 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7720 | ||
7721 | do_cleanups (old_chain); | |
7722 | } | |
7723 | } | |
7724 | ||
05ff989b | 7725 | static void |
0101ce28 JJ |
7726 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7727 | { | |
7728 | struct captured_parse_breakpoint_args *args = data; | |
7729 | ||
7efd8fc2 | 7730 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->canonical_p, |
0101ce28 | 7731 | args->not_found_ptr); |
0101ce28 JJ |
7732 | } |
7733 | ||
018d34a4 VP |
7734 | /* Given TOK, a string specification of condition and thread, as |
7735 | accepted by the 'break' command, extract the condition | |
7736 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7737 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7738 | If no condition is found, *COND_STRING is set to NULL. |
7739 | If no thread is found, *THREAD is set to -1. */ | |
7740 | static void | |
7741 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7742 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7743 | { |
7744 | *cond_string = NULL; | |
7745 | *thread = -1; | |
7746 | while (tok && *tok) | |
7747 | { | |
7748 | char *end_tok; | |
7749 | int toklen; | |
7750 | char *cond_start = NULL; | |
7751 | char *cond_end = NULL; | |
cc59ec59 | 7752 | |
e9cafbcc | 7753 | tok = skip_spaces (tok); |
018d34a4 | 7754 | |
e9cafbcc | 7755 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7756 | |
7757 | toklen = end_tok - tok; | |
7758 | ||
7759 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7760 | { | |
f7545552 TT |
7761 | struct expression *expr; |
7762 | ||
018d34a4 | 7763 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7764 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7765 | xfree (expr); | |
018d34a4 VP |
7766 | cond_end = tok; |
7767 | *cond_string = savestring (cond_start, | |
7768 | cond_end - cond_start); | |
7769 | } | |
7770 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7771 | { | |
7772 | char *tmptok; | |
7773 | ||
7774 | tok = end_tok + 1; | |
7775 | tmptok = tok; | |
7776 | *thread = strtol (tok, &tok, 0); | |
7777 | if (tok == tmptok) | |
7778 | error (_("Junk after thread keyword.")); | |
7779 | if (!valid_thread_id (*thread)) | |
7780 | error (_("Unknown thread %d."), *thread); | |
7781 | } | |
4a306c9a JB |
7782 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7783 | { | |
7784 | char *tmptok; | |
7785 | ||
7786 | tok = end_tok + 1; | |
7787 | tmptok = tok; | |
7788 | *task = strtol (tok, &tok, 0); | |
7789 | if (tok == tmptok) | |
7790 | error (_("Junk after task keyword.")); | |
7791 | if (!valid_task_id (*task)) | |
b6199126 | 7792 | error (_("Unknown task %d."), *task); |
4a306c9a | 7793 | } |
018d34a4 VP |
7794 | else |
7795 | error (_("Junk at end of arguments.")); | |
7796 | } | |
7797 | } | |
7798 | ||
0fb4aa4b PA |
7799 | /* Decode a static tracepoint marker spec. */ |
7800 | ||
7801 | static struct symtabs_and_lines | |
7802 | decode_static_tracepoint_spec (char **arg_p) | |
7803 | { | |
7804 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7805 | struct symtabs_and_lines sals; | |
7806 | struct symtab_and_line sal; | |
7807 | struct symbol *sym; | |
7808 | struct cleanup *old_chain; | |
7809 | char *p = &(*arg_p)[3]; | |
7810 | char *endp; | |
7811 | char *marker_str; | |
7812 | int i; | |
7813 | ||
e9cafbcc | 7814 | p = skip_spaces (p); |
0fb4aa4b | 7815 | |
e9cafbcc | 7816 | endp = skip_to_space (p); |
0fb4aa4b PA |
7817 | |
7818 | marker_str = savestring (p, endp - p); | |
7819 | old_chain = make_cleanup (xfree, marker_str); | |
7820 | ||
7821 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7822 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7823 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7824 | ||
7825 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7826 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7827 | ||
7828 | for (i = 0; i < sals.nelts; i++) | |
7829 | { | |
7830 | struct static_tracepoint_marker *marker; | |
7831 | ||
7832 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7833 | ||
7834 | init_sal (&sals.sals[i]); | |
7835 | ||
7836 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7837 | sals.sals[i].pc = marker->address; | |
7838 | ||
7839 | release_static_tracepoint_marker (marker); | |
7840 | } | |
7841 | ||
7842 | do_cleanups (old_chain); | |
7843 | ||
7844 | *arg_p = endp; | |
7845 | return sals; | |
7846 | } | |
7847 | ||
fd9b8c24 PA |
7848 | /* Set a breakpoint. This function is shared between CLI and MI |
7849 | functions for setting a breakpoint. This function has two major | |
7850 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7851 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7852 | breakpoint location, address and thread. Otherwise, ARG is just |
7853 | the location of breakpoint, with condition and thread specified by | |
7854 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7855 | the breakpoint number will be allocated from the internal | |
7856 | breakpoint count. Returns true if any breakpoint was created; | |
7857 | false otherwise. */ | |
0101ce28 | 7858 | |
8cdf0e15 VP |
7859 | int |
7860 | create_breakpoint (struct gdbarch *gdbarch, | |
7861 | char *arg, char *cond_string, int thread, | |
7862 | int parse_condition_and_thread, | |
0fb4aa4b | 7863 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7864 | int ignore_count, |
7865 | enum auto_boolean pending_break_support, | |
7866 | struct breakpoint_ops *ops, | |
84f4c1fe | 7867 | int from_tty, int enabled, int internal) |
c3f6f71d | 7868 | { |
71fff37b | 7869 | struct gdb_exception e; |
c3f6f71d | 7870 | struct symtabs_and_lines sals; |
0101ce28 | 7871 | struct symtab_and_line pending_sal; |
0101ce28 | 7872 | char *copy_arg; |
c3f6f71d | 7873 | char *addr_start = arg; |
7efd8fc2 | 7874 | struct linespec_result canonical; |
c3f6f71d | 7875 | struct cleanup *old_chain; |
80c99de1 | 7876 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7877 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7878 | int i; |
0101ce28 | 7879 | int pending = 0; |
0101ce28 | 7880 | int not_found = 0; |
4a306c9a | 7881 | int task = 0; |
86b17b60 | 7882 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7883 | |
c3f6f71d JM |
7884 | sals.sals = NULL; |
7885 | sals.nelts = 0; | |
7efd8fc2 | 7886 | init_linespec_result (&canonical); |
c3f6f71d | 7887 | |
0101ce28 JJ |
7888 | parse_args.arg_p = &arg; |
7889 | parse_args.sals_p = &sals; | |
7efd8fc2 | 7890 | parse_args.canonical_p = &canonical; |
0101ce28 JJ |
7891 | parse_args.not_found_ptr = ¬_found; |
7892 | ||
0fb4aa4b PA |
7893 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7894 | { | |
7895 | int i; | |
7896 | ||
7897 | sals = decode_static_tracepoint_spec (&arg); | |
7898 | ||
7899 | copy_arg = savestring (addr_start, arg - addr_start); | |
7efd8fc2 | 7900 | canonical.canonical = xcalloc (sals.nelts, sizeof (char **)); |
0fb4aa4b | 7901 | for (i = 0; i < sals.nelts; i++) |
7efd8fc2 | 7902 | canonical.canonical[i] = xstrdup (copy_arg); |
0fb4aa4b PA |
7903 | goto done; |
7904 | } | |
7905 | ||
05ff989b AC |
7906 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7907 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7908 | |
7909 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7910 | switch (e.reason) |
0101ce28 | 7911 | { |
05ff989b | 7912 | case RETURN_QUIT: |
98deb0da | 7913 | throw_exception (e); |
05ff989b AC |
7914 | case RETURN_ERROR: |
7915 | switch (e.error) | |
0101ce28 | 7916 | { |
05ff989b | 7917 | case NOT_FOUND_ERROR: |
0101ce28 | 7918 | |
05ff989b AC |
7919 | /* If pending breakpoint support is turned off, throw |
7920 | error. */ | |
fa8d40ab JJ |
7921 | |
7922 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7923 | throw_exception (e); |
7924 | ||
7925 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7926 | |
05ff989b AC |
7927 | /* If pending breakpoint support is auto query and the user |
7928 | selects no, then simply return the error code. */ | |
059fb39f | 7929 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
3e43a32a MS |
7930 | && !nquery (_("Make breakpoint pending on " |
7931 | "future shared library load? "))) | |
fd9b8c24 | 7932 | return 0; |
fa8d40ab | 7933 | |
05ff989b AC |
7934 | /* At this point, either the user was queried about setting |
7935 | a pending breakpoint and selected yes, or pending | |
7936 | breakpoint behavior is on and thus a pending breakpoint | |
7937 | is defaulted on behalf of the user. */ | |
0101ce28 | 7938 | copy_arg = xstrdup (addr_start); |
7efd8fc2 | 7939 | canonical.canonical = ©_arg; |
0101ce28 JJ |
7940 | sals.nelts = 1; |
7941 | sals.sals = &pending_sal; | |
7942 | pending_sal.pc = 0; | |
7943 | pending = 1; | |
05ff989b AC |
7944 | break; |
7945 | default: | |
98deb0da | 7946 | throw_exception (e); |
0101ce28 | 7947 | } |
2abae994 | 7948 | break; |
05ff989b AC |
7949 | default: |
7950 | if (!sals.nelts) | |
fd9b8c24 | 7951 | return 0; |
0101ce28 | 7952 | } |
c3f6f71d | 7953 | |
0fb4aa4b PA |
7954 | done: |
7955 | ||
4a64f543 | 7956 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7957 | old_chain = make_cleanup (null_cleanup, 0); |
7958 | ||
0101ce28 JJ |
7959 | if (!pending) |
7960 | { | |
7961 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7962 | make_cleanup (xfree, sals.sals); | |
7963 | ||
7efd8fc2 TT |
7964 | /* Cleanup the canonical array but not its contents. */ |
7965 | make_cleanup (xfree, canonical.canonical); | |
0101ce28 | 7966 | } |
c3f6f71d | 7967 | |
c3f6f71d JM |
7968 | /* ----------------------------- SNIP ----------------------------- |
7969 | Anything added to the cleanup chain beyond this point is assumed | |
7970 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7971 | then the memory is not reclaimed. */ |
7972 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 7973 | |
7efd8fc2 | 7974 | /* Mark the contents of the canonical for cleanup. These go on |
80c99de1 | 7975 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7976 | for (i = 0; i < sals.nelts; i++) |
7977 | { | |
7efd8fc2 TT |
7978 | if (canonical.canonical[i] != NULL) |
7979 | make_cleanup (xfree, canonical.canonical[i]); | |
c3f6f71d JM |
7980 | } |
7981 | ||
7982 | /* Resolve all line numbers to PC's and verify that the addresses | |
7983 | are ok for the target. */ | |
0101ce28 | 7984 | if (!pending) |
23e7acfb | 7985 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7986 | |
7a697b8d SS |
7987 | /* Fast tracepoints may have additional restrictions on location. */ |
7988 | if (type_wanted == bp_fast_tracepoint) | |
7989 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7990 | ||
c3f6f71d JM |
7991 | /* Verify that condition can be parsed, before setting any |
7992 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7993 | breakpoint. */ |
0101ce28 | 7994 | if (!pending) |
c3f6f71d | 7995 | { |
2f069f6f | 7996 | if (parse_condition_and_thread) |
72b2ff0e VP |
7997 | { |
7998 | /* Here we only parse 'arg' to separate condition | |
7999 | from thread number, so parsing in context of first | |
8000 | sal is OK. When setting the breakpoint we'll | |
8001 | re-parse it in context of each sal. */ | |
8002 | cond_string = NULL; | |
8003 | thread = -1; | |
4a306c9a JB |
8004 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
8005 | &thread, &task); | |
72b2ff0e VP |
8006 | if (cond_string) |
8007 | make_cleanup (xfree, cond_string); | |
8008 | } | |
2f069f6f | 8009 | else |
72b2ff0e VP |
8010 | { |
8011 | /* Create a private copy of condition string. */ | |
8012 | if (cond_string) | |
8013 | { | |
8014 | cond_string = xstrdup (cond_string); | |
8015 | make_cleanup (xfree, cond_string); | |
8016 | } | |
8017 | } | |
0fb4aa4b PA |
8018 | |
8019 | /* If the user is creating a static tracepoint by marker id | |
8020 | (strace -m MARKER_ID), then store the sals index, so that | |
8021 | breakpoint_re_set can try to match up which of the newly | |
8022 | found markers corresponds to this one, and, don't try to | |
8023 | expand multiple locations for each sal, given than SALS | |
8024 | already should contain all sals for MARKER_ID. */ | |
8025 | if (type_wanted == bp_static_tracepoint | |
7efd8fc2 | 8026 | && is_marker_spec (canonical.canonical[0])) |
0fb4aa4b PA |
8027 | { |
8028 | int i; | |
8029 | ||
8030 | for (i = 0; i < sals.nelts; ++i) | |
8031 | { | |
8032 | struct symtabs_and_lines expanded; | |
8033 | struct breakpoint *tp; | |
8034 | struct cleanup *old_chain; | |
8035 | ||
8036 | expanded.nelts = 1; | |
8037 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
8038 | expanded.sals[0] = sals.sals[i]; | |
8039 | old_chain = make_cleanup (xfree, expanded.sals); | |
8040 | ||
7efd8fc2 | 8041 | create_breakpoint_sal (gdbarch, expanded, canonical.canonical[i], |
0fb4aa4b PA |
8042 | cond_string, type_wanted, |
8043 | tempflag ? disp_del : disp_donttouch, | |
8044 | thread, task, ignore_count, ops, | |
56435ebe TT |
8045 | from_tty, enabled, internal, |
8046 | canonical.special_display); | |
0fb4aa4b PA |
8047 | |
8048 | do_cleanups (old_chain); | |
8049 | ||
8050 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
8051 | if (internal) |
8052 | tp = get_breakpoint (internal_breakpoint_number); | |
8053 | else | |
8054 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
8055 | gdb_assert (tp != NULL); |
8056 | ||
8057 | /* Given that its possible to have multiple markers with | |
8058 | the same string id, if the user is creating a static | |
8059 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
8060 | store the sals index, so that breakpoint_re_set can | |
8061 | try to match up which of the newly found markers | |
8062 | corresponds to this one */ | |
8063 | tp->static_trace_marker_id_idx = i; | |
8064 | } | |
8065 | } | |
8066 | else | |
7efd8fc2 | 8067 | create_breakpoints_sal (gdbarch, sals, &canonical, cond_string, |
3e43a32a MS |
8068 | type_wanted, |
8069 | tempflag ? disp_del : disp_donttouch, | |
0fb4aa4b | 8070 | thread, task, ignore_count, ops, from_tty, |
84f4c1fe | 8071 | enabled, internal); |
c906108c | 8072 | } |
0101ce28 JJ |
8073 | else |
8074 | { | |
0101ce28 JJ |
8075 | struct breakpoint *b; |
8076 | ||
0101ce28 JJ |
8077 | make_cleanup (xfree, copy_arg); |
8078 | ||
a6d9a66e | 8079 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 8080 | set_breakpoint_number (internal, b); |
72b2ff0e | 8081 | b->thread = -1; |
7efd8fc2 | 8082 | b->addr_string = canonical.canonical[0]; |
72b2ff0e | 8083 | b->cond_string = NULL; |
0101ce28 | 8084 | b->ignore_count = ignore_count; |
0101ce28 | 8085 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8086 | b->condition_not_parsed = 1; |
604133b5 | 8087 | b->ops = ops; |
41447f92 | 8088 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 8089 | b->pspace = current_program_space; |
84f4c1fe | 8090 | b->py_bp_object = NULL; |
74960c60 | 8091 | |
6c95b8df | 8092 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
8093 | && (b->type == bp_breakpoint |
8094 | || b->type == bp_hardware_breakpoint)) | |
8095 | b->enable_state = bp_startup_disabled; | |
8096 | ||
84f4c1fe PM |
8097 | if (internal) |
8098 | /* Do not mention breakpoints with a negative number, | |
8099 | but do notify observers. */ | |
8100 | observer_notify_breakpoint_created (b->number); | |
8101 | else | |
8102 | mention (b); | |
0101ce28 JJ |
8103 | } |
8104 | ||
c3f6f71d | 8105 | if (sals.nelts > 1) |
95a42b64 | 8106 | { |
3e43a32a MS |
8107 | warning (_("Multiple breakpoints were set.\nUse the " |
8108 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8109 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8110 | } |
8111 | ||
80c99de1 PA |
8112 | /* That's it. Discard the cleanups for data inserted into the |
8113 | breakpoint. */ | |
8114 | discard_cleanups (bkpt_chain); | |
8115 | /* But cleanup everything else. */ | |
c3f6f71d | 8116 | do_cleanups (old_chain); |
217dc9e2 | 8117 | |
80c99de1 | 8118 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 8119 | update_global_location_list (1); |
fd9b8c24 PA |
8120 | |
8121 | return 1; | |
c3f6f71d | 8122 | } |
c906108c | 8123 | |
72b2ff0e VP |
8124 | /* Set a breakpoint. |
8125 | ARG is a string describing breakpoint address, | |
8126 | condition, and thread. | |
8127 | FLAG specifies if a breakpoint is hardware on, | |
8128 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8129 | and BP_TEMPFLAG. */ | |
8130 | ||
98deb0da | 8131 | static void |
72b2ff0e | 8132 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 8133 | { |
72b2ff0e | 8134 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8135 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8136 | ? bp_hardware_breakpoint | |
8137 | : bp_breakpoint); | |
c3f6f71d | 8138 | |
8cdf0e15 VP |
8139 | create_breakpoint (get_current_arch (), |
8140 | arg, | |
8141 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 8142 | tempflag, type_wanted, |
8cdf0e15 VP |
8143 | 0 /* Ignore count */, |
8144 | pending_break_support, | |
8145 | NULL /* breakpoint_ops */, | |
8146 | from_tty, | |
84f4c1fe PM |
8147 | 1 /* enabled */, |
8148 | 0 /* internal */); | |
c906108c SS |
8149 | } |
8150 | ||
72b2ff0e | 8151 | |
c906108c SS |
8152 | /* Helper function for break_command_1 and disassemble_command. */ |
8153 | ||
8154 | void | |
fba45db2 | 8155 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8156 | { |
8157 | CORE_ADDR pc; | |
8158 | ||
8159 | if (sal->pc == 0 && sal->symtab != NULL) | |
8160 | { | |
8161 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 8162 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
8163 | sal->line, sal->symtab->filename); |
8164 | sal->pc = pc; | |
6a048695 | 8165 | |
4a64f543 MS |
8166 | /* If this SAL corresponds to a breakpoint inserted using a line |
8167 | number, then skip the function prologue if necessary. */ | |
6a048695 | 8168 | if (sal->explicit_line) |
059acae7 | 8169 | skip_prologue_sal (sal); |
c906108c SS |
8170 | } |
8171 | ||
8172 | if (sal->section == 0 && sal->symtab != NULL) | |
8173 | { | |
8174 | struct blockvector *bv; | |
c5aa993b JM |
8175 | struct block *b; |
8176 | struct symbol *sym; | |
c906108c | 8177 | |
801e3a5b | 8178 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
8179 | if (bv != NULL) |
8180 | { | |
7f0df278 | 8181 | sym = block_linkage_function (b); |
c906108c SS |
8182 | if (sym != NULL) |
8183 | { | |
8184 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 8185 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
8186 | } |
8187 | else | |
8188 | { | |
4a64f543 MS |
8189 | /* It really is worthwhile to have the section, so we'll |
8190 | just have to look harder. This case can be executed | |
8191 | if we have line numbers but no functions (as can | |
8192 | happen in assembly source). */ | |
c906108c | 8193 | |
c5aa993b | 8194 | struct minimal_symbol *msym; |
6c95b8df PA |
8195 | struct cleanup *old_chain = save_current_space_and_thread (); |
8196 | ||
8197 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
8198 | |
8199 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
8200 | if (msym) | |
714835d5 | 8201 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
8202 | |
8203 | do_cleanups (old_chain); | |
c906108c SS |
8204 | } |
8205 | } | |
8206 | } | |
8207 | } | |
8208 | ||
8209 | void | |
fba45db2 | 8210 | break_command (char *arg, int from_tty) |
c906108c | 8211 | { |
db107f19 | 8212 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8213 | } |
8214 | ||
c906108c | 8215 | void |
fba45db2 | 8216 | tbreak_command (char *arg, int from_tty) |
c906108c | 8217 | { |
db107f19 | 8218 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8219 | } |
8220 | ||
c906108c | 8221 | static void |
fba45db2 | 8222 | hbreak_command (char *arg, int from_tty) |
c906108c | 8223 | { |
db107f19 | 8224 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8225 | } |
8226 | ||
8227 | static void | |
fba45db2 | 8228 | thbreak_command (char *arg, int from_tty) |
c906108c | 8229 | { |
db107f19 | 8230 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8231 | } |
8232 | ||
8233 | static void | |
fba45db2 | 8234 | stop_command (char *arg, int from_tty) |
c906108c | 8235 | { |
a3f17187 | 8236 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8237 | Usage: stop in <function | address>\n\ |
a3f17187 | 8238 | stop at <line>\n")); |
c906108c SS |
8239 | } |
8240 | ||
8241 | static void | |
fba45db2 | 8242 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8243 | { |
8244 | int badInput = 0; | |
8245 | ||
c5aa993b | 8246 | if (arg == (char *) NULL) |
c906108c SS |
8247 | badInput = 1; |
8248 | else if (*arg != '*') | |
8249 | { | |
8250 | char *argptr = arg; | |
8251 | int hasColon = 0; | |
8252 | ||
4a64f543 | 8253 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8254 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8255 | function/method name. */ |
c906108c | 8256 | while (*argptr && !hasColon) |
c5aa993b JM |
8257 | { |
8258 | hasColon = (*argptr == ':'); | |
8259 | argptr++; | |
8260 | } | |
c906108c SS |
8261 | |
8262 | if (hasColon) | |
c5aa993b | 8263 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8264 | else |
c5aa993b | 8265 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8266 | } |
8267 | ||
8268 | if (badInput) | |
a3f17187 | 8269 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8270 | else |
db107f19 | 8271 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8272 | } |
8273 | ||
8274 | static void | |
fba45db2 | 8275 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8276 | { |
8277 | int badInput = 0; | |
8278 | ||
c5aa993b | 8279 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8280 | badInput = 1; |
8281 | else | |
8282 | { | |
8283 | char *argptr = arg; | |
8284 | int hasColon = 0; | |
8285 | ||
4a64f543 MS |
8286 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8287 | it is probably a line number. */ | |
c906108c | 8288 | while (*argptr && !hasColon) |
c5aa993b JM |
8289 | { |
8290 | hasColon = (*argptr == ':'); | |
8291 | argptr++; | |
8292 | } | |
c906108c SS |
8293 | |
8294 | if (hasColon) | |
c5aa993b | 8295 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8296 | else |
c5aa993b | 8297 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8298 | } |
8299 | ||
8300 | if (badInput) | |
a3f17187 | 8301 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8302 | else |
db107f19 | 8303 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8304 | } |
8305 | ||
4a64f543 MS |
8306 | /* Return non-zero if EXP is verified as constant. Returned zero |
8307 | means EXP is variable. Also the constant detection may fail for | |
8308 | some constant expressions and in such case still falsely return | |
8309 | zero. */ | |
65d79d4b SDJ |
8310 | static int |
8311 | watchpoint_exp_is_const (const struct expression *exp) | |
8312 | { | |
8313 | int i = exp->nelts; | |
8314 | ||
8315 | while (i > 0) | |
8316 | { | |
8317 | int oplenp, argsp; | |
8318 | ||
8319 | /* We are only interested in the descriptor of each element. */ | |
8320 | operator_length (exp, i, &oplenp, &argsp); | |
8321 | i -= oplenp; | |
8322 | ||
8323 | switch (exp->elts[i].opcode) | |
8324 | { | |
8325 | case BINOP_ADD: | |
8326 | case BINOP_SUB: | |
8327 | case BINOP_MUL: | |
8328 | case BINOP_DIV: | |
8329 | case BINOP_REM: | |
8330 | case BINOP_MOD: | |
8331 | case BINOP_LSH: | |
8332 | case BINOP_RSH: | |
8333 | case BINOP_LOGICAL_AND: | |
8334 | case BINOP_LOGICAL_OR: | |
8335 | case BINOP_BITWISE_AND: | |
8336 | case BINOP_BITWISE_IOR: | |
8337 | case BINOP_BITWISE_XOR: | |
8338 | case BINOP_EQUAL: | |
8339 | case BINOP_NOTEQUAL: | |
8340 | case BINOP_LESS: | |
8341 | case BINOP_GTR: | |
8342 | case BINOP_LEQ: | |
8343 | case BINOP_GEQ: | |
8344 | case BINOP_REPEAT: | |
8345 | case BINOP_COMMA: | |
8346 | case BINOP_EXP: | |
8347 | case BINOP_MIN: | |
8348 | case BINOP_MAX: | |
8349 | case BINOP_INTDIV: | |
8350 | case BINOP_CONCAT: | |
8351 | case BINOP_IN: | |
8352 | case BINOP_RANGE: | |
8353 | case TERNOP_COND: | |
8354 | case TERNOP_SLICE: | |
8355 | case TERNOP_SLICE_COUNT: | |
8356 | ||
8357 | case OP_LONG: | |
8358 | case OP_DOUBLE: | |
8359 | case OP_DECFLOAT: | |
8360 | case OP_LAST: | |
8361 | case OP_COMPLEX: | |
8362 | case OP_STRING: | |
8363 | case OP_BITSTRING: | |
8364 | case OP_ARRAY: | |
8365 | case OP_TYPE: | |
8366 | case OP_NAME: | |
8367 | case OP_OBJC_NSSTRING: | |
8368 | ||
8369 | case UNOP_NEG: | |
8370 | case UNOP_LOGICAL_NOT: | |
8371 | case UNOP_COMPLEMENT: | |
8372 | case UNOP_ADDR: | |
8373 | case UNOP_HIGH: | |
4a64f543 MS |
8374 | /* Unary, binary and ternary operators: We have to check |
8375 | their operands. If they are constant, then so is the | |
8376 | result of that operation. For instance, if A and B are | |
8377 | determined to be constants, then so is "A + B". | |
8378 | ||
8379 | UNOP_IND is one exception to the rule above, because the | |
8380 | value of *ADDR is not necessarily a constant, even when | |
8381 | ADDR is. */ | |
65d79d4b SDJ |
8382 | break; |
8383 | ||
8384 | case OP_VAR_VALUE: | |
8385 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8386 | |
65d79d4b | 8387 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8388 | possible that a buggy compiler could mark a variable as |
8389 | constant even when it is not, and TYPE_CONST would return | |
8390 | true in this case, while SYMBOL_CLASS wouldn't. | |
8391 | ||
8392 | We also have to check for function symbols because they | |
8393 | are always constant. */ | |
65d79d4b SDJ |
8394 | { |
8395 | struct symbol *s = exp->elts[i + 2].symbol; | |
8396 | ||
8397 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8398 | && SYMBOL_CLASS (s) != LOC_CONST | |
8399 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8400 | return 0; | |
8401 | break; | |
8402 | } | |
8403 | ||
8404 | /* The default action is to return 0 because we are using | |
8405 | the optimistic approach here: If we don't know something, | |
8406 | then it is not a constant. */ | |
8407 | default: | |
8408 | return 0; | |
8409 | } | |
8410 | } | |
8411 | ||
8412 | return 1; | |
8413 | } | |
8414 | ||
77b06cd7 TJB |
8415 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8416 | ||
8417 | static int | |
8418 | insert_watchpoint (struct bp_location *bl) | |
8419 | { | |
e09342b5 TJB |
8420 | int length = bl->owner->exact? 1 : bl->length; |
8421 | ||
8422 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
8423 | bl->owner->cond_exp); | |
77b06cd7 TJB |
8424 | } |
8425 | ||
8426 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8427 | ||
8428 | static int | |
8429 | remove_watchpoint (struct bp_location *bl) | |
8430 | { | |
e09342b5 TJB |
8431 | int length = bl->owner->exact? 1 : bl->length; |
8432 | ||
8433 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
8434 | bl->owner->cond_exp); | |
8435 | } | |
8436 | ||
8437 | /* Implement the "resources_needed" breakpoint_ops method for | |
8438 | hardware watchpoints. */ | |
8439 | ||
8440 | static int | |
8441 | resources_needed_watchpoint (const struct bp_location *bl) | |
8442 | { | |
90e4670f | 8443 | int length = bl->owner->exact? 1 : bl->length; |
e09342b5 | 8444 | |
90e4670f | 8445 | return target_region_ok_for_hw_watchpoint (bl->address, length); |
77b06cd7 TJB |
8446 | } |
8447 | ||
8448 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8449 | ||
8450 | static struct breakpoint_ops watchpoint_breakpoint_ops = | |
8451 | { | |
8452 | insert_watchpoint, | |
8453 | remove_watchpoint, | |
8454 | NULL, /* breakpoint_hit */ | |
e09342b5 | 8455 | resources_needed_watchpoint, |
77b06cd7 TJB |
8456 | NULL, /* print_it */ |
8457 | NULL, /* print_one */ | |
8458 | NULL, /* print_mention */ | |
8459 | NULL /* print_recreate */ | |
8460 | }; | |
8461 | ||
53a5351d JM |
8462 | /* accessflag: hw_write: watch write, |
8463 | hw_read: watch read, | |
8464 | hw_access: watch access (read or write) */ | |
c906108c | 8465 | static void |
84f4c1fe PM |
8466 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8467 | int just_location, int internal) | |
c906108c | 8468 | { |
d983da9c | 8469 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8470 | struct expression *exp; |
60e1c644 | 8471 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8472 | struct value *val, *mark, *result; |
c906108c | 8473 | struct frame_info *frame; |
c906108c SS |
8474 | char *exp_start = NULL; |
8475 | char *exp_end = NULL; | |
37e4754d | 8476 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8477 | int toklen; |
8478 | char *cond_start = NULL; | |
8479 | char *cond_end = NULL; | |
c906108c SS |
8480 | int i, other_type_used, target_resources_ok = 0; |
8481 | enum bptype bp_type; | |
e09342b5 | 8482 | int reg_cnt = 0; |
37e4754d | 8483 | int thread = -1; |
0cf6dd15 | 8484 | int pc = 0; |
c906108c | 8485 | |
37e4754d LM |
8486 | /* Make sure that we actually have parameters to parse. */ |
8487 | if (arg != NULL && arg[0] != '\0') | |
8488 | { | |
8489 | toklen = strlen (arg); /* Size of argument list. */ | |
8490 | ||
8491 | /* Points tok to the end of the argument list. */ | |
8492 | tok = arg + toklen - 1; | |
8493 | ||
4a64f543 MS |
8494 | /* Go backwards in the parameters list. Skip the last |
8495 | parameter. If we're expecting a 'thread <thread_num>' | |
8496 | parameter, this should be the thread identifier. */ | |
37e4754d LM |
8497 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8498 | tok--; | |
8499 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8500 | tok--; | |
8501 | ||
8502 | /* Points end_tok to the beginning of the last token. */ | |
8503 | id_tok_start = tok + 1; | |
8504 | ||
4a64f543 MS |
8505 | /* Go backwards in the parameters list. Skip one more |
8506 | parameter. If we're expecting a 'thread <thread_num>' | |
8507 | parameter, we should reach a "thread" token. */ | |
37e4754d LM |
8508 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8509 | tok--; | |
8510 | ||
8511 | end_tok = tok; | |
8512 | ||
8513 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8514 | tok--; | |
8515 | ||
8516 | /* Move the pointer forward to skip the whitespace and | |
8517 | calculate the length of the token. */ | |
8518 | tok++; | |
8519 | toklen = end_tok - tok; | |
8520 | ||
8521 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8522 | { | |
8523 | /* At this point we've found a "thread" token, which means | |
8524 | the user is trying to set a watchpoint that triggers | |
8525 | only in a specific thread. */ | |
8526 | char *endp; | |
8527 | ||
8528 | /* Extract the thread ID from the next token. */ | |
8529 | thread = strtol (id_tok_start, &endp, 0); | |
8530 | ||
8531 | /* Check if the user provided a valid numeric value for the | |
8532 | thread ID. */ | |
8533 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8534 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8535 | ||
8536 | /* Check if the thread actually exists. */ | |
8537 | if (!valid_thread_id (thread)) | |
8538 | error (_("Unknown thread %d."), thread); | |
8539 | ||
8540 | /* Truncate the string and get rid of the thread <thread_num> | |
8541 | parameter before the parameter list is parsed by the | |
8542 | evaluate_expression() function. */ | |
8543 | *tok = '\0'; | |
8544 | } | |
8545 | } | |
8546 | ||
8547 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8548 | innermost_block = NULL; |
8549 | exp_start = arg; | |
8550 | exp = parse_exp_1 (&arg, 0, 0); | |
8551 | exp_end = arg; | |
fa8a61dc TT |
8552 | /* Remove trailing whitespace from the expression before saving it. |
8553 | This makes the eventual display of the expression string a bit | |
8554 | prettier. */ | |
8555 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8556 | --exp_end; | |
8557 | ||
65d79d4b SDJ |
8558 | /* Checking if the expression is not constant. */ |
8559 | if (watchpoint_exp_is_const (exp)) | |
8560 | { | |
8561 | int len; | |
8562 | ||
8563 | len = exp_end - exp_start; | |
8564 | while (len > 0 && isspace (exp_start[len - 1])) | |
8565 | len--; | |
8566 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8567 | } | |
8568 | ||
c906108c SS |
8569 | exp_valid_block = innermost_block; |
8570 | mark = value_mark (); | |
a1442452 | 8571 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8572 | |
8573 | if (just_location) | |
8574 | { | |
8575 | exp_valid_block = NULL; | |
a1442452 | 8576 | val = value_addr (result); |
06a64a0b TT |
8577 | release_value (val); |
8578 | value_free_to_mark (mark); | |
8579 | } | |
8580 | else if (val != NULL) | |
fa4727a6 | 8581 | release_value (val); |
c906108c | 8582 | |
e9cafbcc TT |
8583 | tok = skip_spaces (arg); |
8584 | end_tok = skip_to_space (tok); | |
c906108c SS |
8585 | |
8586 | toklen = end_tok - tok; | |
8587 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8588 | { | |
2d134ed3 PA |
8589 | struct expression *cond; |
8590 | ||
60e1c644 | 8591 | innermost_block = NULL; |
c906108c SS |
8592 | tok = cond_start = end_tok + 1; |
8593 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8594 | |
8595 | /* The watchpoint expression may not be local, but the condition | |
8596 | may still be. E.g.: `watch global if local > 0'. */ | |
8597 | cond_exp_valid_block = innermost_block; | |
8598 | ||
2d134ed3 | 8599 | xfree (cond); |
c906108c SS |
8600 | cond_end = tok; |
8601 | } | |
8602 | if (*tok) | |
8a3fe4f8 | 8603 | error (_("Junk at end of command.")); |
c906108c | 8604 | |
53a5351d | 8605 | if (accessflag == hw_read) |
c5aa993b | 8606 | bp_type = bp_read_watchpoint; |
53a5351d | 8607 | else if (accessflag == hw_access) |
c5aa993b JM |
8608 | bp_type = bp_access_watchpoint; |
8609 | else | |
8610 | bp_type = bp_hardware_watchpoint; | |
c906108c | 8611 | |
e09342b5 TJB |
8612 | reg_cnt = can_use_hardware_watchpoint (val, target_exact_watchpoints); |
8613 | if (reg_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8614 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
e09342b5 | 8615 | if (reg_cnt != 0) |
c5aa993b JM |
8616 | { |
8617 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8618 | target_resources_ok = |
e09342b5 | 8619 | target_can_use_hardware_watchpoint (bp_type, i + reg_cnt, |
53a5351d | 8620 | other_type_used); |
c5aa993b | 8621 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8622 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8623 | |
c5aa993b | 8624 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
3e43a32a MS |
8625 | error (_("Target can only support one kind " |
8626 | "of HW watchpoint at a time.")); | |
c5aa993b | 8627 | } |
c906108c | 8628 | |
4a64f543 MS |
8629 | /* Change the type of breakpoint to an ordinary watchpoint if a |
8630 | hardware watchpoint could not be set. */ | |
e09342b5 | 8631 | if (!reg_cnt || target_resources_ok <= 0) |
4d28f7a8 KB |
8632 | bp_type = bp_watchpoint; |
8633 | ||
d983da9c | 8634 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8635 | |
8636 | /* If the expression is "local", then set up a "watchpoint scope" | |
8637 | breakpoint at the point where we've left the scope of the watchpoint | |
8638 | expression. Create the scope breakpoint before the watchpoint, so | |
8639 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8640 | if (exp_valid_block && frame) |
d983da9c | 8641 | { |
edb3359d DJ |
8642 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8643 | { | |
8644 | scope_breakpoint | |
a6d9a66e UW |
8645 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8646 | frame_unwind_caller_pc (frame), | |
edb3359d | 8647 | bp_watchpoint_scope); |
d983da9c | 8648 | |
edb3359d | 8649 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8650 | |
edb3359d DJ |
8651 | /* Automatically delete the breakpoint when it hits. */ |
8652 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8653 | |
edb3359d DJ |
8654 | /* Only break in the proper frame (help with recursion). */ |
8655 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8656 | |
edb3359d | 8657 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8658 | scope_breakpoint->loc->gdbarch |
8659 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8660 | scope_breakpoint->loc->requested_address |
8661 | = frame_unwind_caller_pc (frame); | |
8662 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8663 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8664 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8665 | scope_breakpoint->type); |
8666 | } | |
d983da9c DJ |
8667 | } |
8668 | ||
c906108c | 8669 | /* Now set up the breakpoint. */ |
2d134ed3 | 8670 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 8671 | set_breakpoint_number (internal, b); |
37e4754d | 8672 | b->thread = thread; |
b5de0fa7 | 8673 | b->disposition = disp_donttouch; |
c906108c SS |
8674 | b->exp = exp; |
8675 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8676 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8677 | if (just_location) |
8678 | { | |
8679 | struct type *t = value_type (val); | |
8680 | CORE_ADDR addr = value_as_address (val); | |
8681 | char *name; | |
8682 | ||
8683 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8684 | name = type_to_string (t); | |
8685 | ||
d63d0675 JK |
8686 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8687 | core_addr_to_string (addr)); | |
06a64a0b TT |
8688 | xfree (name); |
8689 | ||
d63d0675 JK |
8690 | b->exp_string = xstrprintf ("-location: %.*s", |
8691 | (int) (exp_end - exp_start), exp_start); | |
8692 | ||
06a64a0b TT |
8693 | /* The above expression is in C. */ |
8694 | b->language = language_c; | |
8695 | } | |
8696 | else | |
8697 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 8698 | b->val = val; |
fa4727a6 | 8699 | b->val_valid = 1; |
77b06cd7 TJB |
8700 | b->ops = &watchpoint_breakpoint_ops; |
8701 | ||
e09342b5 TJB |
8702 | /* Use an exact watchpoint when there's only one memory region to be |
8703 | watched, and only one debug register is needed to watch it. */ | |
8704 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
8705 | ||
c906108c SS |
8706 | if (cond_start) |
8707 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8708 | else | |
8709 | b->cond_string = 0; | |
c5aa993b | 8710 | |
c906108c | 8711 | if (frame) |
f6bc2008 PA |
8712 | { |
8713 | b->watchpoint_frame = get_frame_id (frame); | |
8714 | b->watchpoint_thread = inferior_ptid; | |
8715 | } | |
c906108c | 8716 | else |
f6bc2008 PA |
8717 | { |
8718 | b->watchpoint_frame = null_frame_id; | |
8719 | b->watchpoint_thread = null_ptid; | |
8720 | } | |
c906108c | 8721 | |
d983da9c | 8722 | if (scope_breakpoint != NULL) |
c906108c | 8723 | { |
d983da9c DJ |
8724 | /* The scope breakpoint is related to the watchpoint. We will |
8725 | need to act on them together. */ | |
8726 | b->related_breakpoint = scope_breakpoint; | |
8727 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8728 | } |
d983da9c | 8729 | |
06a64a0b TT |
8730 | if (!just_location) |
8731 | value_free_to_mark (mark); | |
2d134ed3 PA |
8732 | |
8733 | /* Finally update the new watchpoint. This creates the locations | |
8734 | that should be inserted. */ | |
8735 | update_watchpoint (b, 1); | |
84f4c1fe PM |
8736 | if (internal) |
8737 | /* Do not mention breakpoints with a negative number, but do | |
8738 | notify observers. */ | |
8739 | observer_notify_breakpoint_created (b->number); | |
8740 | else | |
8741 | mention (b); | |
b60e7edf | 8742 | update_global_location_list (1); |
c906108c SS |
8743 | } |
8744 | ||
e09342b5 TJB |
8745 | /* Return count of debug registers needed to watch the given expression. |
8746 | If EXACT_WATCHPOINTS is 1, then consider that only the address of | |
8747 | the start of the watched region will be monitored (i.e., all accesses | |
8748 | will be aligned). This uses less debug registers on some targets. | |
8749 | ||
8750 | If the watchpoint cannot be handled in hardware return zero. */ | |
c906108c | 8751 | |
c906108c | 8752 | static int |
e09342b5 | 8753 | can_use_hardware_watchpoint (struct value *v, int exact_watchpoints) |
c906108c SS |
8754 | { |
8755 | int found_memory_cnt = 0; | |
2e70b7b9 | 8756 | struct value *head = v; |
c906108c SS |
8757 | |
8758 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8759 | if (!can_use_hw_watchpoints) |
c906108c | 8760 | return 0; |
c5aa993b | 8761 | |
5c44784c JM |
8762 | /* Make sure that the value of the expression depends only upon |
8763 | memory contents, and values computed from them within GDB. If we | |
8764 | find any register references or function calls, we can't use a | |
8765 | hardware watchpoint. | |
8766 | ||
8767 | The idea here is that evaluating an expression generates a series | |
8768 | of values, one holding the value of every subexpression. (The | |
8769 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8770 | a*b+c.) GDB's values hold almost enough information to establish | |
8771 | the criteria given above --- they identify memory lvalues, | |
8772 | register lvalues, computed values, etcetera. So we can evaluate | |
8773 | the expression, and then scan the chain of values that leaves | |
8774 | behind to decide whether we can detect any possible change to the | |
8775 | expression's final value using only hardware watchpoints. | |
8776 | ||
8777 | However, I don't think that the values returned by inferior | |
8778 | function calls are special in any way. So this function may not | |
8779 | notice that an expression involving an inferior function call | |
8780 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8781 | for (; v; v = value_next (v)) |
c906108c | 8782 | { |
5c44784c | 8783 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8784 | { |
8464be76 DJ |
8785 | if (v != head && value_lazy (v)) |
8786 | /* A lazy memory lvalue in the chain is one that GDB never | |
8787 | needed to fetch; we either just used its address (e.g., | |
8788 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
8789 | in `a,b'). This doesn't apply to HEAD; if that is | |
8790 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 8791 | ; |
53a5351d | 8792 | else |
5c44784c JM |
8793 | { |
8794 | /* Ahh, memory we actually used! Check if we can cover | |
8795 | it with hardware watchpoints. */ | |
df407dfe | 8796 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8797 | |
8798 | /* We only watch structs and arrays if user asked for it | |
8799 | explicitly, never if they just happen to appear in a | |
8800 | middle of some value chain. */ | |
8801 | if (v == head | |
8802 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8803 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8804 | { | |
42ae5230 | 8805 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
8806 | int len; |
8807 | int num_regs; | |
8808 | ||
8809 | len = (exact_watchpoints | |
8810 | && is_scalar_type_recursive (vtype))? | |
8811 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 8812 | |
e09342b5 TJB |
8813 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
8814 | if (!num_regs) | |
2e70b7b9 MS |
8815 | return 0; |
8816 | else | |
e09342b5 | 8817 | found_memory_cnt += num_regs; |
2e70b7b9 | 8818 | } |
5c44784c | 8819 | } |
c5aa993b | 8820 | } |
5086187c AC |
8821 | else if (VALUE_LVAL (v) != not_lval |
8822 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 8823 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 8824 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 8825 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
8826 | } |
8827 | ||
8828 | /* The expression itself looks suitable for using a hardware | |
8829 | watchpoint, but give the target machine a chance to reject it. */ | |
8830 | return found_memory_cnt; | |
8831 | } | |
8832 | ||
8b93c638 | 8833 | void |
84f4c1fe | 8834 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8835 | { |
84f4c1fe | 8836 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
8837 | } |
8838 | ||
8839 | /* A helper function that looks for an argument at the start of a | |
8840 | string. The argument must also either be at the end of the string, | |
8841 | or be followed by whitespace. Returns 1 if it finds the argument, | |
8842 | 0 otherwise. If the argument is found, it updates *STR. */ | |
8843 | ||
8844 | static int | |
8845 | check_for_argument (char **str, char *arg, int arg_len) | |
8846 | { | |
8847 | if (strncmp (*str, arg, arg_len) == 0 | |
8848 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
8849 | { | |
8850 | *str += arg_len; | |
8851 | return 1; | |
8852 | } | |
8853 | return 0; | |
8854 | } | |
8855 | ||
8856 | /* A helper function that looks for the "-location" argument and then | |
8857 | calls watch_command_1. */ | |
8858 | ||
8859 | static void | |
8860 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
8861 | { | |
8862 | int just_location = 0; | |
8863 | ||
8864 | if (arg | |
8865 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
8866 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
8867 | { | |
e9cafbcc | 8868 | arg = skip_spaces (arg); |
06a64a0b TT |
8869 | just_location = 1; |
8870 | } | |
8871 | ||
84f4c1fe | 8872 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 8873 | } |
8926118c | 8874 | |
c5aa993b | 8875 | static void |
fba45db2 | 8876 | watch_command (char *arg, int from_tty) |
c906108c | 8877 | { |
06a64a0b | 8878 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
8879 | } |
8880 | ||
8b93c638 | 8881 | void |
84f4c1fe | 8882 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8883 | { |
84f4c1fe | 8884 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 8885 | } |
8926118c | 8886 | |
c5aa993b | 8887 | static void |
fba45db2 | 8888 | rwatch_command (char *arg, int from_tty) |
c906108c | 8889 | { |
06a64a0b | 8890 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
8891 | } |
8892 | ||
8b93c638 | 8893 | void |
84f4c1fe | 8894 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8895 | { |
84f4c1fe | 8896 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 8897 | } |
8926118c | 8898 | |
c5aa993b | 8899 | static void |
fba45db2 | 8900 | awatch_command (char *arg, int from_tty) |
c906108c | 8901 | { |
06a64a0b | 8902 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 8903 | } |
c906108c | 8904 | \f |
c5aa993b | 8905 | |
43ff13b4 | 8906 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8907 | because it uses the mechanisms of breakpoints. */ |
8908 | ||
bfec99b2 PA |
8909 | struct until_break_command_continuation_args |
8910 | { | |
8911 | struct breakpoint *breakpoint; | |
8912 | struct breakpoint *breakpoint2; | |
186c406b | 8913 | int thread_num; |
bfec99b2 PA |
8914 | }; |
8915 | ||
43ff13b4 | 8916 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 8917 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 8918 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 8919 | command. */ |
c2c6d25f | 8920 | static void |
604ead4a | 8921 | until_break_command_continuation (void *arg) |
43ff13b4 | 8922 | { |
bfec99b2 PA |
8923 | struct until_break_command_continuation_args *a = arg; |
8924 | ||
8925 | delete_breakpoint (a->breakpoint); | |
8926 | if (a->breakpoint2) | |
8927 | delete_breakpoint (a->breakpoint2); | |
186c406b | 8928 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
8929 | } |
8930 | ||
c906108c | 8931 | void |
ae66c1fc | 8932 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8933 | { |
8934 | struct symtabs_and_lines sals; | |
8935 | struct symtab_and_line sal; | |
206415a3 | 8936 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8937 | struct breakpoint *breakpoint; |
f107f563 | 8938 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 8939 | struct cleanup *old_chain; |
186c406b TT |
8940 | int thread; |
8941 | struct thread_info *tp; | |
c906108c SS |
8942 | |
8943 | clear_proceed_status (); | |
8944 | ||
8945 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 8946 | this function. */ |
c5aa993b | 8947 | |
c906108c SS |
8948 | if (default_breakpoint_valid) |
8949 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
7efd8fc2 | 8950 | default_breakpoint_line, NULL, NULL); |
c906108c | 8951 | else |
7efd8fc2 | 8952 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL, NULL); |
c5aa993b | 8953 | |
c906108c | 8954 | if (sals.nelts != 1) |
8a3fe4f8 | 8955 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8956 | |
c906108c | 8957 | sal = sals.sals[0]; |
4a64f543 | 8958 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 8959 | |
c906108c | 8960 | if (*arg) |
8a3fe4f8 | 8961 | error (_("Junk at end of arguments.")); |
c5aa993b | 8962 | |
c906108c | 8963 | resolve_sal_pc (&sal); |
c5aa993b | 8964 | |
ae66c1fc EZ |
8965 | if (anywhere) |
8966 | /* If the user told us to continue until a specified location, | |
8967 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8968 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8969 | null_frame_id, bp_until); | |
ae66c1fc | 8970 | else |
4a64f543 MS |
8971 | /* Otherwise, specify the selected frame, because we want to stop |
8972 | only at the very same frame. */ | |
a6d9a66e UW |
8973 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8974 | get_stack_frame_id (frame), | |
ae66c1fc | 8975 | bp_until); |
c5aa993b | 8976 | |
f107f563 | 8977 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8978 | |
186c406b TT |
8979 | tp = inferior_thread (); |
8980 | thread = tp->num; | |
8981 | ||
ae66c1fc EZ |
8982 | /* Keep within the current frame, or in frames called by the current |
8983 | one. */ | |
edb3359d DJ |
8984 | |
8985 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8986 | { |
edb3359d DJ |
8987 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8988 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8989 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8990 | sal, | |
edb3359d | 8991 | frame_unwind_caller_id (frame), |
f107f563 VP |
8992 | bp_until); |
8993 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
8994 | |
8995 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
8996 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 8997 | } |
c5aa993b | 8998 | |
c906108c | 8999 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9000 | |
4a64f543 MS |
9001 | /* If we are running asynchronously, and proceed call above has |
9002 | actually managed to start the target, arrange for breakpoints to | |
9003 | be deleted when the target stops. Otherwise, we're already | |
9004 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9005 | |
8ea051c5 | 9006 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9007 | { |
bfec99b2 PA |
9008 | struct until_break_command_continuation_args *args; |
9009 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9010 | |
bfec99b2 PA |
9011 | args->breakpoint = breakpoint; |
9012 | args->breakpoint2 = breakpoint2; | |
186c406b | 9013 | args->thread_num = thread; |
f107f563 VP |
9014 | |
9015 | discard_cleanups (old_chain); | |
95e54da7 PA |
9016 | add_continuation (inferior_thread (), |
9017 | until_break_command_continuation, args, | |
604ead4a | 9018 | xfree); |
f107f563 VP |
9019 | } |
9020 | else | |
c5aa993b | 9021 | do_cleanups (old_chain); |
c906108c | 9022 | } |
ae66c1fc | 9023 | |
c906108c SS |
9024 | /* This function attempts to parse an optional "if <cond>" clause |
9025 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9026 | |
c906108c SS |
9027 | Else, it returns a pointer to the condition string. (It does not |
9028 | attempt to evaluate the string against a particular block.) And, | |
9029 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9030 | if clause in the arg string. */ |
53a5351d | 9031 | |
c906108c | 9032 | static char * |
fba45db2 | 9033 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9034 | { |
c5aa993b JM |
9035 | char *cond_string; |
9036 | ||
9037 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9038 | return NULL; |
c5aa993b | 9039 | |
4a64f543 | 9040 | /* Skip the "if" keyword. */ |
c906108c | 9041 | (*arg) += 2; |
c5aa993b | 9042 | |
c906108c | 9043 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9044 | condition string. */ |
e9cafbcc | 9045 | *arg = skip_spaces (*arg); |
c906108c | 9046 | cond_string = *arg; |
c5aa993b | 9047 | |
4a64f543 MS |
9048 | /* Assume that the condition occupies the remainder of the arg |
9049 | string. */ | |
c906108c | 9050 | (*arg) += strlen (cond_string); |
c5aa993b | 9051 | |
c906108c SS |
9052 | return cond_string; |
9053 | } | |
c5aa993b | 9054 | |
c906108c SS |
9055 | /* Commands to deal with catching events, such as signals, exceptions, |
9056 | process start/exit, etc. */ | |
c5aa993b JM |
9057 | |
9058 | typedef enum | |
9059 | { | |
44feb3ce TT |
9060 | catch_fork_temporary, catch_vfork_temporary, |
9061 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9062 | } |
9063 | catch_fork_kind; | |
9064 | ||
c906108c | 9065 | static void |
cc59ec59 MS |
9066 | catch_fork_command_1 (char *arg, int from_tty, |
9067 | struct cmd_list_element *command) | |
c906108c | 9068 | { |
a6d9a66e | 9069 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9070 | char *cond_string = NULL; |
44feb3ce TT |
9071 | catch_fork_kind fork_kind; |
9072 | int tempflag; | |
9073 | ||
9074 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9075 | tempflag = (fork_kind == catch_fork_temporary | |
9076 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9077 | |
44feb3ce TT |
9078 | if (!arg) |
9079 | arg = ""; | |
e9cafbcc | 9080 | arg = skip_spaces (arg); |
c5aa993b | 9081 | |
c906108c | 9082 | /* The allowed syntax is: |
c5aa993b JM |
9083 | catch [v]fork |
9084 | catch [v]fork if <cond> | |
9085 | ||
4a64f543 | 9086 | First, check if there's an if clause. */ |
c906108c | 9087 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9088 | |
c906108c | 9089 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9090 | error (_("Junk at end of arguments.")); |
c5aa993b | 9091 | |
c906108c | 9092 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9093 | and enable reporting of such events. */ |
c5aa993b JM |
9094 | switch (fork_kind) |
9095 | { | |
44feb3ce TT |
9096 | case catch_fork_temporary: |
9097 | case catch_fork_permanent: | |
a6d9a66e | 9098 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9099 | &catch_fork_breakpoint_ops); |
c906108c | 9100 | break; |
44feb3ce TT |
9101 | case catch_vfork_temporary: |
9102 | case catch_vfork_permanent: | |
a6d9a66e | 9103 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9104 | &catch_vfork_breakpoint_ops); |
c906108c | 9105 | break; |
c5aa993b | 9106 | default: |
8a3fe4f8 | 9107 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9108 | break; |
c5aa993b | 9109 | } |
c906108c SS |
9110 | } |
9111 | ||
9112 | static void | |
cc59ec59 MS |
9113 | catch_exec_command_1 (char *arg, int from_tty, |
9114 | struct cmd_list_element *command) | |
c906108c | 9115 | { |
a6d9a66e | 9116 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9117 | int tempflag; |
c5aa993b | 9118 | char *cond_string = NULL; |
c906108c | 9119 | |
44feb3ce TT |
9120 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9121 | ||
9122 | if (!arg) | |
9123 | arg = ""; | |
e9cafbcc | 9124 | arg = skip_spaces (arg); |
c906108c SS |
9125 | |
9126 | /* The allowed syntax is: | |
c5aa993b JM |
9127 | catch exec |
9128 | catch exec if <cond> | |
c906108c | 9129 | |
4a64f543 | 9130 | First, check if there's an if clause. */ |
c906108c SS |
9131 | cond_string = ep_parse_optional_if_clause (&arg); |
9132 | ||
9133 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9134 | error (_("Junk at end of arguments.")); |
c906108c SS |
9135 | |
9136 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 9137 | and enable reporting of such events. */ |
a6d9a66e UW |
9138 | create_catchpoint (gdbarch, tempflag, cond_string, |
9139 | &catch_exec_breakpoint_ops); | |
c906108c | 9140 | } |
c5aa993b | 9141 | |
3086aeae DJ |
9142 | static enum print_stop_action |
9143 | print_exception_catchpoint (struct breakpoint *b) | |
9144 | { | |
ade92717 | 9145 | int bp_temp, bp_throw; |
3086aeae | 9146 | |
ade92717 | 9147 | annotate_catchpoint (b->number); |
3086aeae | 9148 | |
ade92717 AR |
9149 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9150 | if (b->loc->address != b->loc->requested_address) | |
9151 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9152 | b->loc->address, | |
9153 | b->number, 1); | |
df2b6d2d | 9154 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9155 | ui_out_text (uiout, |
9156 | bp_temp ? "Temporary catchpoint " | |
9157 | : "Catchpoint "); | |
9158 | if (!ui_out_is_mi_like_p (uiout)) | |
9159 | ui_out_field_int (uiout, "bkptno", b->number); | |
9160 | ui_out_text (uiout, | |
c0b37c48 AR |
9161 | bp_throw ? " (exception thrown), " |
9162 | : " (exception caught), "); | |
ade92717 AR |
9163 | if (ui_out_is_mi_like_p (uiout)) |
9164 | { | |
9165 | ui_out_field_string (uiout, "reason", | |
9166 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9167 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9168 | ui_out_field_int (uiout, "bkptno", b->number); | |
9169 | } | |
3086aeae DJ |
9170 | return PRINT_SRC_AND_LOC; |
9171 | } | |
9172 | ||
9173 | static void | |
cc59ec59 MS |
9174 | print_one_exception_catchpoint (struct breakpoint *b, |
9175 | struct bp_location **last_loc) | |
3086aeae | 9176 | { |
79a45b7d | 9177 | struct value_print_options opts; |
cc59ec59 | 9178 | |
79a45b7d TT |
9179 | get_user_print_options (&opts); |
9180 | if (opts.addressprint) | |
3086aeae DJ |
9181 | { |
9182 | annotate_field (4); | |
604133b5 AR |
9183 | if (b->loc == NULL || b->loc->shlib_disabled) |
9184 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9185 | else | |
5af949e3 UW |
9186 | ui_out_field_core_addr (uiout, "addr", |
9187 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9188 | } |
9189 | annotate_field (5); | |
604133b5 | 9190 | if (b->loc) |
a6d9a66e | 9191 | *last_loc = b->loc; |
3086aeae DJ |
9192 | if (strstr (b->addr_string, "throw") != NULL) |
9193 | ui_out_field_string (uiout, "what", "exception throw"); | |
9194 | else | |
9195 | ui_out_field_string (uiout, "what", "exception catch"); | |
9196 | } | |
9197 | ||
9198 | static void | |
9199 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9200 | { | |
ade92717 AR |
9201 | int bp_temp; |
9202 | int bp_throw; | |
9203 | ||
df2b6d2d | 9204 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9205 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9206 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9207 | : _("Catchpoint ")); | |
9208 | ui_out_field_int (uiout, "bkptno", b->number); | |
9209 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9210 | : _(" (catch)")); | |
3086aeae DJ |
9211 | } |
9212 | ||
6149aea9 PA |
9213 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9214 | catch catchpoints. */ | |
9215 | ||
9216 | static void | |
4a64f543 MS |
9217 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9218 | struct ui_file *fp) | |
6149aea9 PA |
9219 | { |
9220 | int bp_temp; | |
9221 | int bp_throw; | |
9222 | ||
9223 | bp_temp = b->disposition == disp_del; | |
9224 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9225 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9226 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
9227 | } | |
9228 | ||
3086aeae | 9229 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
9230 | NULL, /* insert */ |
9231 | NULL, /* remove */ | |
9232 | NULL, /* breakpoint_hit */ | |
e09342b5 | 9233 | NULL, /* resources_needed */ |
3086aeae DJ |
9234 | print_exception_catchpoint, |
9235 | print_one_exception_catchpoint, | |
6149aea9 PA |
9236 | print_mention_exception_catchpoint, |
9237 | print_recreate_exception_catchpoint | |
3086aeae DJ |
9238 | }; |
9239 | ||
9240 | static int | |
9241 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9242 | enum exception_event_kind ex_event, int from_tty) | |
9243 | { | |
604133b5 AR |
9244 | char *trigger_func_name; |
9245 | ||
3086aeae | 9246 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9247 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9248 | else |
604133b5 | 9249 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9250 | |
8cdf0e15 VP |
9251 | create_breakpoint (get_current_arch (), |
9252 | trigger_func_name, cond_string, -1, | |
9253 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9254 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9255 | 0, |
9256 | AUTO_BOOLEAN_TRUE /* pending */, | |
9257 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9258 | 1 /* enabled */, |
9259 | 0 /* internal */); | |
3086aeae | 9260 | |
3086aeae DJ |
9261 | return 1; |
9262 | } | |
9263 | ||
4a64f543 | 9264 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9265 | |
9266 | static void | |
fba45db2 KB |
9267 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9268 | int tempflag, int from_tty) | |
c906108c | 9269 | { |
c5aa993b | 9270 | char *cond_string = NULL; |
c5aa993b | 9271 | |
44feb3ce TT |
9272 | if (!arg) |
9273 | arg = ""; | |
e9cafbcc | 9274 | arg = skip_spaces (arg); |
c5aa993b | 9275 | |
c906108c SS |
9276 | cond_string = ep_parse_optional_if_clause (&arg); |
9277 | ||
9278 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9279 | error (_("Junk at end of arguments.")); |
c906108c | 9280 | |
059fb39f PM |
9281 | if (ex_event != EX_EVENT_THROW |
9282 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9283 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9284 | |
3086aeae DJ |
9285 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9286 | return; | |
9287 | ||
8a3fe4f8 | 9288 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9289 | } |
9290 | ||
44feb3ce TT |
9291 | /* Implementation of "catch catch" command. */ |
9292 | ||
9293 | static void | |
9294 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9295 | { | |
9296 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9297 | |
44feb3ce TT |
9298 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9299 | } | |
9300 | ||
9301 | /* Implementation of "catch throw" command. */ | |
9302 | ||
9303 | static void | |
9304 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9305 | { | |
9306 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9307 | |
44feb3ce TT |
9308 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9309 | } | |
9310 | ||
f7f9143b JB |
9311 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9312 | ||
9313 | static void | |
a6d9a66e UW |
9314 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9315 | struct symtab_and_line sal, | |
f7f9143b JB |
9316 | char *addr_string, |
9317 | char *exp_string, | |
9318 | char *cond_string, | |
9319 | struct expression *cond, | |
9320 | struct breakpoint_ops *ops, | |
9321 | int tempflag, | |
9322 | int from_tty) | |
9323 | { | |
9324 | struct breakpoint *b; | |
9325 | ||
9326 | if (from_tty) | |
9327 | { | |
5af949e3 UW |
9328 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9329 | if (!loc_gdbarch) | |
9330 | loc_gdbarch = gdbarch; | |
9331 | ||
6c95b8df PA |
9332 | describe_other_breakpoints (loc_gdbarch, |
9333 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9334 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9335 | version for exception catchpoints, because two catchpoints | |
9336 | used for different exception names will use the same address. | |
9337 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9338 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9339 | inapropriate, we should use the word catchpoint, and tell |
9340 | the user what type of catchpoint it is. The above is good | |
9341 | enough for now, though. */ | |
9342 | } | |
9343 | ||
a6d9a66e | 9344 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9345 | set_breakpoint_count (breakpoint_count + 1); |
9346 | ||
9347 | b->enable_state = bp_enabled; | |
9348 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9349 | b->number = breakpoint_count; | |
9350 | b->ignore_count = 0; | |
511a6cd4 | 9351 | b->loc->cond = cond; |
f7f9143b JB |
9352 | b->addr_string = addr_string; |
9353 | b->language = language_ada; | |
9354 | b->cond_string = cond_string; | |
9355 | b->exp_string = exp_string; | |
9356 | b->thread = -1; | |
9357 | b->ops = ops; | |
f7f9143b JB |
9358 | |
9359 | mention (b); | |
b60e7edf | 9360 | update_global_location_list (1); |
f7f9143b JB |
9361 | } |
9362 | ||
9363 | /* Implement the "catch exception" command. */ | |
9364 | ||
9365 | static void | |
44feb3ce TT |
9366 | catch_ada_exception_command (char *arg, int from_tty, |
9367 | struct cmd_list_element *command) | |
f7f9143b | 9368 | { |
a6d9a66e | 9369 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9370 | int tempflag; |
f7f9143b | 9371 | struct symtab_and_line sal; |
f7f9143b JB |
9372 | char *addr_string = NULL; |
9373 | char *exp_string = NULL; | |
9374 | char *cond_string = NULL; | |
9375 | struct expression *cond = NULL; | |
9376 | struct breakpoint_ops *ops = NULL; | |
9377 | ||
44feb3ce TT |
9378 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9379 | ||
9380 | if (!arg) | |
9381 | arg = ""; | |
f7f9143b JB |
9382 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9383 | &cond_string, &cond, &ops); | |
a6d9a66e | 9384 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9385 | cond_string, cond, ops, tempflag, |
9386 | from_tty); | |
9387 | } | |
9388 | ||
a96d9b2e SDJ |
9389 | /* Cleanup function for a syscall filter list. */ |
9390 | static void | |
9391 | clean_up_filters (void *arg) | |
9392 | { | |
9393 | VEC(int) *iter = *(VEC(int) **) arg; | |
9394 | VEC_free (int, iter); | |
9395 | } | |
9396 | ||
9397 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9398 | filter list, or NULL if no filtering is required. */ | |
9399 | static VEC(int) * | |
9400 | catch_syscall_split_args (char *arg) | |
9401 | { | |
9402 | VEC(int) *result = NULL; | |
9403 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9404 | ||
9405 | while (*arg != '\0') | |
9406 | { | |
9407 | int i, syscall_number; | |
9408 | char *endptr; | |
9409 | char cur_name[128]; | |
9410 | struct syscall s; | |
9411 | ||
9412 | /* Skip whitespace. */ | |
9413 | while (isspace (*arg)) | |
9414 | arg++; | |
9415 | ||
9416 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9417 | cur_name[i] = arg[i]; | |
9418 | cur_name[i] = '\0'; | |
9419 | arg += i; | |
9420 | ||
9421 | /* Check if the user provided a syscall name or a number. */ | |
9422 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9423 | if (*endptr == '\0') | |
bccd0dd2 | 9424 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9425 | else |
9426 | { | |
9427 | /* We have a name. Let's check if it's valid and convert it | |
9428 | to a number. */ | |
9429 | get_syscall_by_name (cur_name, &s); | |
9430 | ||
9431 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9432 | /* Here we have to issue an error instead of a warning, |
9433 | because GDB cannot do anything useful if there's no | |
9434 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9435 | error (_("Unknown syscall name '%s'."), cur_name); |
9436 | } | |
9437 | ||
9438 | /* Ok, it's valid. */ | |
9439 | VEC_safe_push (int, result, s.number); | |
9440 | } | |
9441 | ||
9442 | discard_cleanups (cleanup); | |
9443 | return result; | |
9444 | } | |
9445 | ||
9446 | /* Implement the "catch syscall" command. */ | |
9447 | ||
9448 | static void | |
cc59ec59 MS |
9449 | catch_syscall_command_1 (char *arg, int from_tty, |
9450 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9451 | { |
9452 | int tempflag; | |
9453 | VEC(int) *filter; | |
9454 | struct syscall s; | |
9455 | struct gdbarch *gdbarch = get_current_arch (); | |
9456 | ||
9457 | /* Checking if the feature if supported. */ | |
9458 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9459 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9460 | this architecture yet.")); |
a96d9b2e SDJ |
9461 | |
9462 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9463 | ||
e9cafbcc | 9464 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9465 | |
9466 | /* We need to do this first "dummy" translation in order | |
9467 | to get the syscall XML file loaded or, most important, | |
9468 | to display a warning to the user if there's no XML file | |
9469 | for his/her architecture. */ | |
9470 | get_syscall_by_number (0, &s); | |
9471 | ||
9472 | /* The allowed syntax is: | |
9473 | catch syscall | |
9474 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9475 | ||
9476 | Let's check if there's a syscall name. */ | |
9477 | ||
9478 | if (arg != NULL) | |
9479 | filter = catch_syscall_split_args (arg); | |
9480 | else | |
9481 | filter = NULL; | |
9482 | ||
9483 | create_syscall_event_catchpoint (tempflag, filter, | |
9484 | &catch_syscall_breakpoint_ops); | |
9485 | } | |
9486 | ||
f7f9143b JB |
9487 | /* Implement the "catch assert" command. */ |
9488 | ||
9489 | static void | |
3e43a32a MS |
9490 | catch_assert_command (char *arg, int from_tty, |
9491 | struct cmd_list_element *command) | |
f7f9143b | 9492 | { |
a6d9a66e | 9493 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9494 | int tempflag; |
f7f9143b JB |
9495 | struct symtab_and_line sal; |
9496 | char *addr_string = NULL; | |
9497 | struct breakpoint_ops *ops = NULL; | |
9498 | ||
44feb3ce TT |
9499 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9500 | ||
9501 | if (!arg) | |
9502 | arg = ""; | |
f7f9143b | 9503 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9504 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9505 | ops, tempflag, from_tty); | |
f7f9143b JB |
9506 | } |
9507 | ||
c906108c | 9508 | static void |
fba45db2 | 9509 | catch_command (char *arg, int from_tty) |
c906108c | 9510 | { |
44feb3ce | 9511 | error (_("Catch requires an event name.")); |
c906108c SS |
9512 | } |
9513 | \f | |
9514 | ||
9515 | static void | |
fba45db2 | 9516 | tcatch_command (char *arg, int from_tty) |
c906108c | 9517 | { |
44feb3ce | 9518 | error (_("Catch requires an event name.")); |
c906108c SS |
9519 | } |
9520 | ||
80f8a6eb | 9521 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9522 | |
9523 | static void | |
fba45db2 | 9524 | clear_command (char *arg, int from_tty) |
c906108c | 9525 | { |
d6e956e5 VP |
9526 | struct breakpoint *b; |
9527 | VEC(breakpoint_p) *found = 0; | |
9528 | int ix; | |
c906108c SS |
9529 | int default_match; |
9530 | struct symtabs_and_lines sals; | |
9531 | struct symtab_and_line sal; | |
c906108c SS |
9532 | int i; |
9533 | ||
9534 | if (arg) | |
9535 | { | |
9536 | sals = decode_line_spec (arg, 1); | |
9537 | default_match = 0; | |
9538 | } | |
9539 | else | |
9540 | { | |
c5aa993b | 9541 | sals.sals = (struct symtab_and_line *) |
c906108c | 9542 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9543 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9544 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9545 | sal.line = default_breakpoint_line; |
9546 | sal.symtab = default_breakpoint_symtab; | |
9547 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9548 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9549 | if (sal.symtab == 0) |
8a3fe4f8 | 9550 | error (_("No source file specified.")); |
c906108c SS |
9551 | |
9552 | sals.sals[0] = sal; | |
9553 | sals.nelts = 1; | |
9554 | ||
9555 | default_match = 1; | |
9556 | } | |
9557 | ||
4a64f543 MS |
9558 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9559 | seems, because all existing breakpoints typically have both | |
9560 | file/line and pc set. So, if clear is given file/line, we can | |
9561 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9562 | |
9563 | We only support clearing given the address explicitly | |
9564 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9565 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9566 | due to optimization, all in one block. |
4a64f543 MS |
9567 | |
9568 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9569 | PC corresponding to the same file:line, the breakpoint won't |
9570 | be cleared. We probably can still clear the breakpoint, but | |
9571 | since the other PC value is never presented to user, user | |
9572 | can only find it by guessing, and it does not seem important | |
9573 | to support that. */ | |
9574 | ||
4a64f543 MS |
9575 | /* For each line spec given, delete bps which correspond to it. Do |
9576 | it in two passes, solely to preserve the current behavior that | |
9577 | from_tty is forced true if we delete more than one | |
9578 | breakpoint. */ | |
c906108c | 9579 | |
80f8a6eb | 9580 | found = NULL; |
c906108c SS |
9581 | for (i = 0; i < sals.nelts; i++) |
9582 | { | |
9583 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9584 | If line given (pc == 0), clear all bpts on specified line. |
9585 | If defaulting, clear all bpts on default line | |
c906108c | 9586 | or at default pc. |
c5aa993b JM |
9587 | |
9588 | defaulting sal.pc != 0 tests to do | |
9589 | ||
9590 | 0 1 pc | |
9591 | 1 1 pc _and_ line | |
9592 | 0 0 line | |
9593 | 1 0 <can't happen> */ | |
c906108c SS |
9594 | |
9595 | sal = sals.sals[i]; | |
c906108c | 9596 | |
4a64f543 | 9597 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9598 | ALL_BREAKPOINTS (b) |
c5aa993b | 9599 | { |
0d381245 | 9600 | int match = 0; |
4a64f543 | 9601 | /* Are we going to delete b? */ |
cc60f2e3 | 9602 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9603 | { |
9604 | struct bp_location *loc = b->loc; | |
9605 | for (; loc; loc = loc->next) | |
9606 | { | |
6c95b8df PA |
9607 | int pc_match = sal.pc |
9608 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9609 | && (loc->address == sal.pc) |
9610 | && (!section_is_overlay (loc->section) | |
9611 | || loc->section == sal.section); | |
9612 | int line_match = ((default_match || (0 == sal.pc)) | |
9613 | && b->source_file != NULL | |
9614 | && sal.symtab != NULL | |
6c95b8df | 9615 | && sal.pspace == loc->pspace |
0ba1096a KT |
9616 | && filename_cmp (b->source_file, |
9617 | sal.symtab->filename) == 0 | |
0d381245 VP |
9618 | && b->line_number == sal.line); |
9619 | if (pc_match || line_match) | |
9620 | { | |
9621 | match = 1; | |
9622 | break; | |
9623 | } | |
9624 | } | |
9625 | } | |
9626 | ||
9627 | if (match) | |
d6e956e5 | 9628 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9629 | } |
80f8a6eb MS |
9630 | } |
9631 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9632 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9633 | { |
9634 | if (arg) | |
8a3fe4f8 | 9635 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9636 | else |
8a3fe4f8 | 9637 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9638 | } |
c906108c | 9639 | |
d6e956e5 | 9640 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9641 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9642 | if (from_tty) |
a3f17187 | 9643 | { |
d6e956e5 | 9644 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9645 | printf_unfiltered (_("Deleted breakpoint ")); |
9646 | else | |
9647 | printf_unfiltered (_("Deleted breakpoints ")); | |
9648 | } | |
80f8a6eb | 9649 | breakpoints_changed (); |
d6e956e5 VP |
9650 | |
9651 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9652 | { |
c5aa993b | 9653 | if (from_tty) |
d6e956e5 VP |
9654 | printf_unfiltered ("%d ", b->number); |
9655 | delete_breakpoint (b); | |
c906108c | 9656 | } |
80f8a6eb MS |
9657 | if (from_tty) |
9658 | putchar_unfiltered ('\n'); | |
c906108c SS |
9659 | } |
9660 | \f | |
9661 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9662 | all breakpoints that are marked for deletion, whether hit or not. | |
9663 | This is called after any breakpoint is hit, or after errors. */ | |
9664 | ||
9665 | void | |
fba45db2 | 9666 | breakpoint_auto_delete (bpstat bs) |
c906108c | 9667 | { |
35df4500 | 9668 | struct breakpoint *b, *b_tmp; |
c906108c SS |
9669 | |
9670 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9671 | if (bs->breakpoint_at |
9672 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9673 | && bs->stop) |
f431efe5 | 9674 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 9675 | |
35df4500 | 9676 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9677 | { |
b5de0fa7 | 9678 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9679 | delete_breakpoint (b); |
9680 | } | |
c906108c SS |
9681 | } |
9682 | ||
4a64f543 MS |
9683 | /* A comparison function for bp_location AP and BP being interfaced to |
9684 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
9685 | does breakpoint_address_is_meaningful say for its OWNER), | |
9686 | secondarily by ordering first bp_permanent OWNERed elements and | |
9687 | terciarily just ensuring the array is sorted stable way despite | |
9688 | qsort being an instable algorithm. */ | |
876fa593 JK |
9689 | |
9690 | static int | |
494cfb0f | 9691 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9692 | { |
494cfb0f JK |
9693 | struct bp_location *a = *(void **) ap; |
9694 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9695 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9696 | int a_perm = a->owner->enable_state == bp_permanent; |
9697 | int b_perm = b->owner->enable_state == bp_permanent; | |
9698 | ||
9699 | if (a->address != b->address) | |
9700 | return (a->address > b->address) - (a->address < b->address); | |
9701 | ||
9702 | /* Sort permanent breakpoints first. */ | |
9703 | if (a_perm != b_perm) | |
9704 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9705 | ||
4a64f543 MS |
9706 | /* Make the user-visible order stable across GDB runs. Locations of |
9707 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
9708 | |
9709 | if (a->owner->number != b->owner->number) | |
9710 | return (a->owner->number > b->owner->number) | |
9711 | - (a->owner->number < b->owner->number); | |
9712 | ||
9713 | return (a > b) - (a < b); | |
9714 | } | |
9715 | ||
876fa593 | 9716 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
9717 | bp_location_shadow_len_after_address_max according to the current |
9718 | content of the bp_location array. */ | |
f7545552 TT |
9719 | |
9720 | static void | |
876fa593 | 9721 | bp_location_target_extensions_update (void) |
f7545552 | 9722 | { |
876fa593 JK |
9723 | struct bp_location *bl, **blp_tmp; |
9724 | ||
9725 | bp_location_placed_address_before_address_max = 0; | |
9726 | bp_location_shadow_len_after_address_max = 0; | |
9727 | ||
9728 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9729 | { | |
9730 | CORE_ADDR start, end, addr; | |
9731 | ||
9732 | if (!bp_location_has_shadow (bl)) | |
9733 | continue; | |
9734 | ||
9735 | start = bl->target_info.placed_address; | |
9736 | end = start + bl->target_info.shadow_len; | |
9737 | ||
9738 | gdb_assert (bl->address >= start); | |
9739 | addr = bl->address - start; | |
9740 | if (addr > bp_location_placed_address_before_address_max) | |
9741 | bp_location_placed_address_before_address_max = addr; | |
9742 | ||
9743 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9744 | ||
9745 | gdb_assert (bl->address < end); | |
9746 | addr = end - bl->address; | |
9747 | if (addr > bp_location_shadow_len_after_address_max) | |
9748 | bp_location_shadow_len_after_address_max = addr; | |
9749 | } | |
f7545552 TT |
9750 | } |
9751 | ||
4cd9bd08 | 9752 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9753 | into the inferior, only remove already-inserted locations that no |
9754 | longer should be inserted. Functions that delete a breakpoint or | |
9755 | breakpoints should pass false, so that deleting a breakpoint | |
9756 | doesn't have the side effect of inserting the locations of other | |
9757 | breakpoints that are marked not-inserted, but should_be_inserted | |
9758 | returns true on them. | |
9759 | ||
9760 | This behaviour is useful is situations close to tear-down -- e.g., | |
9761 | after an exec, while the target still has execution, but breakpoint | |
9762 | shadows of the previous executable image should *NOT* be restored | |
9763 | to the new image; or before detaching, where the target still has | |
9764 | execution and wants to delete breakpoints from GDB's lists, and all | |
9765 | breakpoints had already been removed from the inferior. */ | |
9766 | ||
0d381245 | 9767 | static void |
b60e7edf | 9768 | update_global_location_list (int should_insert) |
0d381245 | 9769 | { |
74960c60 | 9770 | struct breakpoint *b; |
876fa593 | 9771 | struct bp_location **locp, *loc; |
f7545552 TT |
9772 | struct cleanup *cleanups; |
9773 | ||
2d134ed3 PA |
9774 | /* Used in the duplicates detection below. When iterating over all |
9775 | bp_locations, points to the first bp_location of a given address. | |
9776 | Breakpoints and watchpoints of different types are never | |
9777 | duplicates of each other. Keep one pointer for each type of | |
9778 | breakpoint/watchpoint, so we only need to loop over all locations | |
9779 | once. */ | |
9780 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9781 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9782 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9783 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 9784 | |
4a64f543 MS |
9785 | /* Saved former bp_location array which we compare against the newly |
9786 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
9787 | struct bp_location **old_location, **old_locp; |
9788 | unsigned old_location_count; | |
9789 | ||
9790 | old_location = bp_location; | |
9791 | old_location_count = bp_location_count; | |
9792 | bp_location = NULL; | |
9793 | bp_location_count = 0; | |
9794 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9795 | |
74960c60 | 9796 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9797 | for (loc = b->loc; loc; loc = loc->next) |
9798 | bp_location_count++; | |
9799 | ||
9800 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9801 | locp = bp_location; | |
9802 | ALL_BREAKPOINTS (b) | |
9803 | for (loc = b->loc; loc; loc = loc->next) | |
9804 | *locp++ = loc; | |
9805 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9806 | bp_location_compare); |
876fa593 JK |
9807 | |
9808 | bp_location_target_extensions_update (); | |
74960c60 | 9809 | |
4a64f543 MS |
9810 | /* Identify bp_location instances that are no longer present in the |
9811 | new list, and therefore should be freed. Note that it's not | |
9812 | necessary that those locations should be removed from inferior -- | |
9813 | if there's another location at the same address (previously | |
9814 | marked as duplicate), we don't need to remove/insert the | |
9815 | location. | |
876fa593 | 9816 | |
4a64f543 MS |
9817 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
9818 | and former bp_location array state respectively. */ | |
876fa593 JK |
9819 | |
9820 | locp = bp_location; | |
9821 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9822 | old_locp++) | |
74960c60 | 9823 | { |
876fa593 | 9824 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9825 | struct bp_location **loc2p; |
876fa593 | 9826 | |
4a64f543 MS |
9827 | /* Tells if 'old_loc' is found amoung the new locations. If |
9828 | not, we have to free it. */ | |
c7d46a38 | 9829 | int found_object = 0; |
20874c92 VP |
9830 | /* Tells if the location should remain inserted in the target. */ |
9831 | int keep_in_target = 0; | |
9832 | int removed = 0; | |
876fa593 | 9833 | |
4a64f543 MS |
9834 | /* Skip LOCP entries which will definitely never be needed. |
9835 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 9836 | while (locp < bp_location + bp_location_count |
c7d46a38 | 9837 | && (*locp)->address < old_loc->address) |
876fa593 | 9838 | locp++; |
c7d46a38 PA |
9839 | |
9840 | for (loc2p = locp; | |
9841 | (loc2p < bp_location + bp_location_count | |
9842 | && (*loc2p)->address == old_loc->address); | |
9843 | loc2p++) | |
9844 | { | |
9845 | if (*loc2p == old_loc) | |
9846 | { | |
9847 | found_object = 1; | |
9848 | break; | |
9849 | } | |
9850 | } | |
74960c60 | 9851 | |
4a64f543 MS |
9852 | /* If this location is no longer present, and inserted, look if |
9853 | there's maybe a new location at the same address. If so, | |
9854 | mark that one inserted, and don't remove this one. This is | |
9855 | needed so that we don't have a time window where a breakpoint | |
9856 | at certain location is not inserted. */ | |
74960c60 | 9857 | |
876fa593 | 9858 | if (old_loc->inserted) |
0d381245 | 9859 | { |
4a64f543 MS |
9860 | /* If the location is inserted now, we might have to remove |
9861 | it. */ | |
74960c60 | 9862 | |
876fa593 | 9863 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 9864 | { |
4a64f543 MS |
9865 | /* The location is still present in the location list, |
9866 | and still should be inserted. Don't do anything. */ | |
20874c92 | 9867 | keep_in_target = 1; |
74960c60 VP |
9868 | } |
9869 | else | |
9870 | { | |
4a64f543 MS |
9871 | /* The location is either no longer present, or got |
9872 | disabled. See if there's another location at the | |
9873 | same address, in which case we don't need to remove | |
9874 | this one from the target. */ | |
876fa593 | 9875 | |
2bdf28a0 | 9876 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9877 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9878 | { | |
876fa593 | 9879 | for (loc2p = locp; |
c7d46a38 PA |
9880 | (loc2p < bp_location + bp_location_count |
9881 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9882 | loc2p++) |
9883 | { | |
9884 | struct bp_location *loc2 = *loc2p; | |
9885 | ||
2d134ed3 | 9886 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9887 | { |
9888 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
9889 | Duplicates check below will fix up this |
9890 | later. */ | |
c7d46a38 | 9891 | loc2->duplicate = 0; |
85d721b8 PA |
9892 | |
9893 | /* Read watchpoint locations are switched to | |
9894 | access watchpoints, if the former are not | |
9895 | supported, but the latter are. */ | |
9896 | if (is_hardware_watchpoint (old_loc->owner)) | |
9897 | { | |
9898 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9899 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9900 | } | |
9901 | ||
c7d46a38 PA |
9902 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9903 | { | |
9904 | loc2->inserted = 1; | |
9905 | loc2->target_info = old_loc->target_info; | |
9906 | keep_in_target = 1; | |
9907 | break; | |
9908 | } | |
876fa593 JK |
9909 | } |
9910 | } | |
9911 | } | |
74960c60 VP |
9912 | } |
9913 | ||
20874c92 VP |
9914 | if (!keep_in_target) |
9915 | { | |
876fa593 | 9916 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 9917 | { |
4a64f543 MS |
9918 | /* This is just about all we can do. We could keep |
9919 | this location on the global list, and try to | |
9920 | remove it next time, but there's no particular | |
9921 | reason why we will succeed next time. | |
20874c92 | 9922 | |
4a64f543 MS |
9923 | Note that at this point, old_loc->owner is still |
9924 | valid, as delete_breakpoint frees the breakpoint | |
9925 | only after calling us. */ | |
3e43a32a MS |
9926 | printf_filtered (_("warning: Error removing " |
9927 | "breakpoint %d\n"), | |
876fa593 | 9928 | old_loc->owner->number); |
20874c92 VP |
9929 | } |
9930 | removed = 1; | |
9931 | } | |
0d381245 | 9932 | } |
74960c60 VP |
9933 | |
9934 | if (!found_object) | |
1c5cfe86 | 9935 | { |
db82e815 PA |
9936 | if (removed && non_stop |
9937 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9938 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9939 | { |
db82e815 PA |
9940 | /* This location was removed from the target. In |
9941 | non-stop mode, a race condition is possible where | |
9942 | we've removed a breakpoint, but stop events for that | |
9943 | breakpoint are already queued and will arrive later. | |
9944 | We apply an heuristic to be able to distinguish such | |
9945 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9946 | breakpoint location for a bit, and will retire it | |
9947 | after we see some number of events. The theory here | |
9948 | is that reporting of events should, "on the average", | |
9949 | be fair, so after a while we'll see events from all | |
9950 | threads that have anything of interest, and no longer | |
9951 | need to keep this breakpoint location around. We | |
9952 | don't hold locations forever so to reduce chances of | |
9953 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9954 | SIGTRAP. | |
9955 | ||
9956 | The heuristic failing can be disastrous on | |
9957 | decr_pc_after_break targets. | |
9958 | ||
9959 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9960 | if we fail to recognize a late breakpoint SIGTRAP, | |
9961 | because events_till_retirement has reached 0 too | |
9962 | soon, we'll fail to do the PC adjustment, and report | |
9963 | a random SIGTRAP to the user. When the user resumes | |
9964 | the inferior, it will most likely immediately crash | |
2dec564e | 9965 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9966 | corrupted, because of being resumed e.g., in the |
9967 | middle of a multi-byte instruction, or skipped a | |
9968 | one-byte instruction. This was actually seen happen | |
9969 | on native x86-linux, and should be less rare on | |
9970 | targets that do not support new thread events, like | |
9971 | remote, due to the heuristic depending on | |
9972 | thread_count. | |
9973 | ||
9974 | Mistaking a random SIGTRAP for a breakpoint trap | |
9975 | causes similar symptoms (PC adjustment applied when | |
9976 | it shouldn't), but then again, playing with SIGTRAPs | |
9977 | behind the debugger's back is asking for trouble. | |
9978 | ||
9979 | Since hardware watchpoint traps are always | |
9980 | distinguishable from other traps, so we don't need to | |
9981 | apply keep hardware watchpoint moribund locations | |
9982 | around. We simply always ignore hardware watchpoint | |
9983 | traps we can no longer explain. */ | |
9984 | ||
876fa593 JK |
9985 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9986 | old_loc->owner = NULL; | |
20874c92 | 9987 | |
876fa593 | 9988 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9989 | } |
9990 | else | |
f431efe5 PA |
9991 | { |
9992 | old_loc->owner = NULL; | |
9993 | decref_bp_location (&old_loc); | |
9994 | } | |
20874c92 | 9995 | } |
74960c60 | 9996 | } |
1c5cfe86 | 9997 | |
2d134ed3 PA |
9998 | /* Rescan breakpoints at the same address and section, marking the |
9999 | first one as "first" and any others as "duplicates". This is so | |
10000 | that the bpt instruction is only inserted once. If we have a | |
10001 | permanent breakpoint at the same place as BPT, make that one the | |
10002 | official one, and the rest as duplicates. Permanent breakpoints | |
10003 | are sorted first for the same address. | |
10004 | ||
10005 | Do the same for hardware watchpoints, but also considering the | |
10006 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 10007 | |
2d134ed3 PA |
10008 | bp_loc_first = NULL; |
10009 | wp_loc_first = NULL; | |
10010 | awp_loc_first = NULL; | |
10011 | rwp_loc_first = NULL; | |
876fa593 | 10012 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 10013 | { |
4a64f543 MS |
10014 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
10015 | non-NULL. */ | |
876fa593 | 10016 | struct breakpoint *b = loc->owner; |
2d134ed3 | 10017 | struct bp_location **loc_first_p; |
876fa593 JK |
10018 | |
10019 | if (b->enable_state == bp_disabled | |
10020 | || b->enable_state == bp_call_disabled | |
10021 | || b->enable_state == bp_startup_disabled | |
10022 | || !loc->enabled | |
10023 | || loc->shlib_disabled | |
15c3d785 | 10024 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 10025 | || is_tracepoint (b)) |
876fa593 JK |
10026 | continue; |
10027 | ||
10028 | /* Permanent breakpoint should always be inserted. */ | |
10029 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10030 | internal_error (__FILE__, __LINE__, | |
10031 | _("allegedly permanent breakpoint is not " | |
10032 | "actually inserted")); | |
10033 | ||
2d134ed3 PA |
10034 | if (b->type == bp_hardware_watchpoint) |
10035 | loc_first_p = &wp_loc_first; | |
10036 | else if (b->type == bp_read_watchpoint) | |
10037 | loc_first_p = &rwp_loc_first; | |
10038 | else if (b->type == bp_access_watchpoint) | |
10039 | loc_first_p = &awp_loc_first; | |
10040 | else | |
10041 | loc_first_p = &bp_loc_first; | |
10042 | ||
10043 | if (*loc_first_p == NULL | |
10044 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10045 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 10046 | { |
2d134ed3 | 10047 | *loc_first_p = loc; |
876fa593 JK |
10048 | loc->duplicate = 0; |
10049 | continue; | |
10050 | } | |
10051 | ||
10052 | loc->duplicate = 1; | |
10053 | ||
2d134ed3 PA |
10054 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
10055 | && b->enable_state != bp_permanent) | |
876fa593 JK |
10056 | internal_error (__FILE__, __LINE__, |
10057 | _("another breakpoint was inserted on top of " | |
10058 | "a permanent breakpoint")); | |
0d381245 | 10059 | } |
74960c60 | 10060 | |
50c71eaf | 10061 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 10062 | && (have_live_inferiors () |
2567c7d9 | 10063 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 10064 | insert_breakpoint_locations (); |
f7545552 TT |
10065 | |
10066 | do_cleanups (cleanups); | |
74960c60 VP |
10067 | } |
10068 | ||
20874c92 VP |
10069 | void |
10070 | breakpoint_retire_moribund (void) | |
10071 | { | |
10072 | struct bp_location *loc; | |
10073 | int ix; | |
10074 | ||
10075 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10076 | if (--(loc->events_till_retirement) == 0) | |
10077 | { | |
f431efe5 | 10078 | decref_bp_location (&loc); |
20874c92 VP |
10079 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
10080 | --ix; | |
10081 | } | |
10082 | } | |
10083 | ||
74960c60 | 10084 | static void |
b60e7edf | 10085 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
10086 | { |
10087 | struct gdb_exception e; | |
cc59ec59 | 10088 | |
74960c60 | 10089 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 10090 | update_global_location_list (inserting); |
0d381245 VP |
10091 | } |
10092 | ||
f431efe5 PA |
10093 | /* Clear BKP from a BPS. */ |
10094 | ||
a474d7c2 | 10095 | static void |
f431efe5 | 10096 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
10097 | { |
10098 | bpstat bs; | |
cc59ec59 | 10099 | |
a474d7c2 | 10100 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 10101 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
10102 | { |
10103 | bs->breakpoint_at = NULL; | |
10104 | bs->old_val = NULL; | |
10105 | /* bs->commands will be freed later. */ | |
10106 | } | |
10107 | } | |
10108 | ||
10109 | /* Callback for iterate_over_threads. */ | |
10110 | static int | |
f431efe5 | 10111 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 10112 | { |
f431efe5 | 10113 | struct breakpoint *bpt = data; |
cc59ec59 | 10114 | |
16c381f0 | 10115 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
10116 | return 0; |
10117 | } | |
10118 | ||
53a5351d | 10119 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 10120 | structures. */ |
c906108c SS |
10121 | |
10122 | void | |
fba45db2 | 10123 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 10124 | { |
52f0bd74 | 10125 | struct breakpoint *b; |
c906108c | 10126 | |
8a3fe4f8 | 10127 | gdb_assert (bpt != NULL); |
c906108c | 10128 | |
4a64f543 MS |
10129 | /* Has this bp already been deleted? This can happen because |
10130 | multiple lists can hold pointers to bp's. bpstat lists are | |
10131 | especial culprits. | |
10132 | ||
10133 | One example of this happening is a watchpoint's scope bp. When | |
10134 | the scope bp triggers, we notice that the watchpoint is out of | |
10135 | scope, and delete it. We also delete its scope bp. But the | |
10136 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
10137 | That bpstat is then checked for auto-deleting bp's, which are | |
10138 | deleted. | |
10139 | ||
10140 | A real solution to this problem might involve reference counts in | |
10141 | bp's, and/or giving them pointers back to their referencing | |
10142 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
10143 | storage when no more references were extent. A cheaper bandaid | |
10144 | was chosen. */ | |
c906108c SS |
10145 | if (bpt->type == bp_none) |
10146 | return; | |
10147 | ||
4a64f543 MS |
10148 | /* At least avoid this stale reference until the reference counting |
10149 | of breakpoints gets resolved. */ | |
d0fb5eae | 10150 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 10151 | { |
d0fb5eae JK |
10152 | struct breakpoint *related; |
10153 | ||
10154 | if (bpt->type == bp_watchpoint_scope) | |
10155 | watchpoint_del_at_next_stop (bpt->related_breakpoint); | |
10156 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) | |
10157 | watchpoint_del_at_next_stop (bpt); | |
10158 | ||
10159 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
10160 | for (related = bpt; related->related_breakpoint != bpt; | |
10161 | related = related->related_breakpoint); | |
10162 | related->related_breakpoint = bpt->related_breakpoint; | |
10163 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
10164 | } |
10165 | ||
383f836e | 10166 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 10167 | |
c906108c SS |
10168 | if (breakpoint_chain == bpt) |
10169 | breakpoint_chain = bpt->next; | |
10170 | ||
c906108c SS |
10171 | ALL_BREAKPOINTS (b) |
10172 | if (b->next == bpt) | |
c5aa993b JM |
10173 | { |
10174 | b->next = bpt->next; | |
10175 | break; | |
10176 | } | |
c906108c | 10177 | |
9add0f1b | 10178 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
10179 | xfree (bpt->cond_string); |
10180 | xfree (bpt->cond_exp); | |
10181 | xfree (bpt->addr_string); | |
10182 | xfree (bpt->exp); | |
10183 | xfree (bpt->exp_string); | |
d63d0675 | 10184 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
10185 | value_free (bpt->val); |
10186 | xfree (bpt->source_file); | |
10187 | xfree (bpt->exec_pathname); | |
a96d9b2e | 10188 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 10189 | |
f431efe5 PA |
10190 | |
10191 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
10192 | been freed. */ | |
10193 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
10194 | in all threeds for now. Note that we cannot just remove bpstats | |
10195 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
10196 | commands are associated with the bpstat; if we remove it here, | |
10197 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
10198 | event-top.c won't do anything, and temporary breakpoints with | |
10199 | commands won't work. */ | |
10200 | ||
10201 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
10202 | ||
4a64f543 MS |
10203 | /* Now that breakpoint is removed from breakpoint list, update the |
10204 | global location list. This will remove locations that used to | |
10205 | belong to this breakpoint. Do this before freeing the breakpoint | |
10206 | itself, since remove_breakpoint looks at location's owner. It | |
10207 | might be better design to have location completely | |
10208 | self-contained, but it's not the case now. */ | |
b60e7edf | 10209 | update_global_location_list (0); |
74960c60 VP |
10210 | |
10211 | ||
4a64f543 MS |
10212 | /* On the chance that someone will soon try again to delete this |
10213 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
10214 | bpt->type = bp_none; |
10215 | ||
b8c9b27d | 10216 | xfree (bpt); |
c906108c SS |
10217 | } |
10218 | ||
4d6140d9 AC |
10219 | static void |
10220 | do_delete_breakpoint_cleanup (void *b) | |
10221 | { | |
10222 | delete_breakpoint (b); | |
10223 | } | |
10224 | ||
10225 | struct cleanup * | |
10226 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
10227 | { | |
10228 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
10229 | } | |
10230 | ||
95a42b64 TT |
10231 | /* A callback for map_breakpoint_numbers that calls |
10232 | delete_breakpoint. */ | |
10233 | ||
10234 | static void | |
10235 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
10236 | { | |
10237 | delete_breakpoint (b); | |
10238 | } | |
10239 | ||
c906108c | 10240 | void |
fba45db2 | 10241 | delete_command (char *arg, int from_tty) |
c906108c | 10242 | { |
35df4500 | 10243 | struct breakpoint *b, *b_tmp; |
c906108c | 10244 | |
ea9365bb TT |
10245 | dont_repeat (); |
10246 | ||
c906108c SS |
10247 | if (arg == 0) |
10248 | { | |
10249 | int breaks_to_delete = 0; | |
10250 | ||
10251 | /* Delete all breakpoints if no argument. | |
4a64f543 MS |
10252 | Do not delete internal or call-dummy breakpoints, these have |
10253 | to be deleted with an explicit breakpoint number argument. */ | |
c5aa993b JM |
10254 | ALL_BREAKPOINTS (b) |
10255 | { | |
059fb39f | 10256 | if (b->type != bp_call_dummy |
aa7d318d | 10257 | && b->type != bp_std_terminate |
059fb39f | 10258 | && b->type != bp_shlib_event |
4efc6507 | 10259 | && b->type != bp_jit_event |
059fb39f PM |
10260 | && b->type != bp_thread_event |
10261 | && b->type != bp_overlay_event | |
0fd8e87f | 10262 | && b->type != bp_longjmp_master |
aa7d318d | 10263 | && b->type != bp_std_terminate_master |
186c406b | 10264 | && b->type != bp_exception_master |
059fb39f | 10265 | && b->number >= 0) |
973d738b DJ |
10266 | { |
10267 | breaks_to_delete = 1; | |
10268 | break; | |
10269 | } | |
c5aa993b | 10270 | } |
c906108c SS |
10271 | |
10272 | /* Ask user only if there are some breakpoints to delete. */ | |
10273 | if (!from_tty | |
e2e0b3e5 | 10274 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 10275 | { |
35df4500 | 10276 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10277 | { |
059fb39f | 10278 | if (b->type != bp_call_dummy |
aa7d318d | 10279 | && b->type != bp_std_terminate |
059fb39f PM |
10280 | && b->type != bp_shlib_event |
10281 | && b->type != bp_thread_event | |
4efc6507 | 10282 | && b->type != bp_jit_event |
059fb39f | 10283 | && b->type != bp_overlay_event |
0fd8e87f | 10284 | && b->type != bp_longjmp_master |
aa7d318d | 10285 | && b->type != bp_std_terminate_master |
186c406b | 10286 | && b->type != bp_exception_master |
059fb39f | 10287 | && b->number >= 0) |
c5aa993b JM |
10288 | delete_breakpoint (b); |
10289 | } | |
c906108c SS |
10290 | } |
10291 | } | |
10292 | else | |
95a42b64 | 10293 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10294 | } |
10295 | ||
0d381245 VP |
10296 | static int |
10297 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10298 | { |
0d381245 VP |
10299 | for (; loc; loc = loc->next) |
10300 | if (!loc->shlib_disabled) | |
10301 | return 0; | |
10302 | return 1; | |
fe3f5fa8 VP |
10303 | } |
10304 | ||
776592bf DE |
10305 | /* Subroutine of update_breakpoint_locations to simplify it. |
10306 | Return non-zero if multiple fns in list LOC have the same name. | |
10307 | Null names are ignored. */ | |
10308 | ||
10309 | static int | |
10310 | ambiguous_names_p (struct bp_location *loc) | |
10311 | { | |
10312 | struct bp_location *l; | |
10313 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10314 | (int (*) (const void *, |
10315 | const void *)) streq, | |
776592bf DE |
10316 | NULL, xcalloc, xfree); |
10317 | ||
10318 | for (l = loc; l != NULL; l = l->next) | |
10319 | { | |
10320 | const char **slot; | |
10321 | const char *name = l->function_name; | |
10322 | ||
10323 | /* Allow for some names to be NULL, ignore them. */ | |
10324 | if (name == NULL) | |
10325 | continue; | |
10326 | ||
10327 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10328 | INSERT); | |
4a64f543 MS |
10329 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10330 | returns NULL. */ | |
776592bf DE |
10331 | if (*slot != NULL) |
10332 | { | |
10333 | htab_delete (htab); | |
10334 | return 1; | |
10335 | } | |
10336 | *slot = name; | |
10337 | } | |
10338 | ||
10339 | htab_delete (htab); | |
10340 | return 0; | |
10341 | } | |
10342 | ||
0fb4aa4b PA |
10343 | /* When symbols change, it probably means the sources changed as well, |
10344 | and it might mean the static tracepoint markers are no longer at | |
10345 | the same address or line numbers they used to be at last we | |
10346 | checked. Losing your static tracepoints whenever you rebuild is | |
10347 | undesirable. This function tries to resync/rematch gdb static | |
10348 | tracepoints with the markers on the target, for static tracepoints | |
10349 | that have not been set by marker id. Static tracepoint that have | |
10350 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10351 | The heuristic is: | |
10352 | ||
10353 | 1) For a tracepoint set at a specific address, look for a marker at | |
10354 | the old PC. If one is found there, assume to be the same marker. | |
10355 | If the name / string id of the marker found is different from the | |
10356 | previous known name, assume that means the user renamed the marker | |
10357 | in the sources, and output a warning. | |
10358 | ||
10359 | 2) For a tracepoint set at a given line number, look for a marker | |
10360 | at the new address of the old line number. If one is found there, | |
10361 | assume to be the same marker. If the name / string id of the | |
10362 | marker found is different from the previous known name, assume that | |
10363 | means the user renamed the marker in the sources, and output a | |
10364 | warning. | |
10365 | ||
10366 | 3) If a marker is no longer found at the same address or line, it | |
10367 | may mean the marker no longer exists. But it may also just mean | |
10368 | the code changed a bit. Maybe the user added a few lines of code | |
10369 | that made the marker move up or down (in line number terms). Ask | |
10370 | the target for info about the marker with the string id as we knew | |
10371 | it. If found, update line number and address in the matching | |
10372 | static tracepoint. This will get confused if there's more than one | |
10373 | marker with the same ID (possible in UST, although unadvised | |
10374 | precisely because it confuses tools). */ | |
10375 | ||
10376 | static struct symtab_and_line | |
10377 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10378 | { | |
10379 | struct static_tracepoint_marker marker; | |
10380 | CORE_ADDR pc; | |
10381 | int i; | |
10382 | ||
10383 | pc = sal.pc; | |
10384 | if (sal.line) | |
10385 | find_line_pc (sal.symtab, sal.line, &pc); | |
10386 | ||
10387 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10388 | { | |
10389 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10390 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10391 | b->number, | |
10392 | b->static_trace_marker_id, marker.str_id); | |
10393 | ||
10394 | xfree (b->static_trace_marker_id); | |
10395 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10396 | release_static_tracepoint_marker (&marker); | |
10397 | ||
10398 | return sal; | |
10399 | } | |
10400 | ||
10401 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10402 | by string ID. */ | |
10403 | if (!sal.explicit_pc | |
10404 | && sal.line != 0 | |
10405 | && sal.symtab != NULL | |
10406 | && b->static_trace_marker_id != NULL) | |
10407 | { | |
10408 | VEC(static_tracepoint_marker_p) *markers; | |
10409 | ||
10410 | markers | |
10411 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10412 | ||
10413 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10414 | { | |
10415 | struct symtab_and_line sal; | |
10416 | struct symbol *sym; | |
10417 | struct static_tracepoint_marker *marker; | |
10418 | ||
10419 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10420 | ||
10421 | xfree (b->static_trace_marker_id); | |
10422 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10423 | ||
10424 | warning (_("marker for static tracepoint %d (%s) not " | |
10425 | "found at previous line number"), | |
10426 | b->number, b->static_trace_marker_id); | |
10427 | ||
10428 | init_sal (&sal); | |
10429 | ||
10430 | sal.pc = marker->address; | |
10431 | ||
10432 | sal = find_pc_line (marker->address, 0); | |
10433 | sym = find_pc_sect_function (marker->address, NULL); | |
10434 | ui_out_text (uiout, "Now in "); | |
10435 | if (sym) | |
10436 | { | |
10437 | ui_out_field_string (uiout, "func", | |
10438 | SYMBOL_PRINT_NAME (sym)); | |
10439 | ui_out_text (uiout, " at "); | |
10440 | } | |
10441 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10442 | ui_out_text (uiout, ":"); | |
10443 | ||
10444 | if (ui_out_is_mi_like_p (uiout)) | |
10445 | { | |
10446 | char *fullname = symtab_to_fullname (sal.symtab); | |
10447 | ||
10448 | if (fullname) | |
10449 | ui_out_field_string (uiout, "fullname", fullname); | |
10450 | } | |
10451 | ||
10452 | ui_out_field_int (uiout, "line", sal.line); | |
10453 | ui_out_text (uiout, "\n"); | |
10454 | ||
10455 | b->line_number = sal.line; | |
10456 | ||
10457 | xfree (b->source_file); | |
10458 | if (sym) | |
10459 | b->source_file = xstrdup (sal.symtab->filename); | |
10460 | else | |
10461 | b->source_file = NULL; | |
10462 | ||
10463 | xfree (b->addr_string); | |
10464 | b->addr_string = xstrprintf ("%s:%d", | |
10465 | sal.symtab->filename, b->line_number); | |
10466 | ||
10467 | /* Might be nice to check if function changed, and warn if | |
10468 | so. */ | |
10469 | ||
10470 | release_static_tracepoint_marker (marker); | |
10471 | } | |
10472 | } | |
10473 | return sal; | |
10474 | } | |
10475 | ||
0e30163f | 10476 | void |
0d381245 VP |
10477 | update_breakpoint_locations (struct breakpoint *b, |
10478 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
10479 | { |
10480 | int i; | |
10481 | char *s; | |
0d381245 VP |
10482 | struct bp_location *existing_locations = b->loc; |
10483 | ||
4a64f543 MS |
10484 | /* If there's no new locations, and all existing locations are |
10485 | pending, don't do anything. This optimizes the common case where | |
10486 | all locations are in the same shared library, that was unloaded. | |
10487 | We'd like to retain the location, so that when the library is | |
10488 | loaded again, we don't loose the enabled/disabled status of the | |
10489 | individual locations. */ | |
0d381245 | 10490 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10491 | return; |
10492 | ||
fe3f5fa8 VP |
10493 | b->loc = NULL; |
10494 | ||
0d381245 | 10495 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10496 | { |
0d381245 | 10497 | struct bp_location *new_loc = |
39d61571 | 10498 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10499 | |
0d381245 VP |
10500 | /* Reparse conditions, they might contain references to the |
10501 | old symtab. */ | |
10502 | if (b->cond_string != NULL) | |
10503 | { | |
10504 | struct gdb_exception e; | |
fe3f5fa8 | 10505 | |
0d381245 VP |
10506 | s = b->cond_string; |
10507 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10508 | { | |
10509 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10510 | 0); | |
10511 | } | |
10512 | if (e.reason < 0) | |
10513 | { | |
3e43a32a MS |
10514 | warning (_("failed to reevaluate condition " |
10515 | "for breakpoint %d: %s"), | |
0d381245 VP |
10516 | b->number, e.message); |
10517 | new_loc->enabled = 0; | |
10518 | } | |
10519 | } | |
fe3f5fa8 | 10520 | |
0d381245 VP |
10521 | if (b->source_file != NULL) |
10522 | xfree (b->source_file); | |
10523 | if (sals.sals[i].symtab == NULL) | |
10524 | b->source_file = NULL; | |
10525 | else | |
1b36a34b | 10526 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10527 | |
0d381245 VP |
10528 | if (b->line_number == 0) |
10529 | b->line_number = sals.sals[i].line; | |
10530 | } | |
fe3f5fa8 | 10531 | |
514f746b AR |
10532 | /* Update locations of permanent breakpoints. */ |
10533 | if (b->enable_state == bp_permanent) | |
10534 | make_breakpoint_permanent (b); | |
10535 | ||
4a64f543 MS |
10536 | /* If possible, carry over 'disable' status from existing |
10537 | breakpoints. */ | |
0d381245 VP |
10538 | { |
10539 | struct bp_location *e = existing_locations; | |
776592bf DE |
10540 | /* If there are multiple breakpoints with the same function name, |
10541 | e.g. for inline functions, comparing function names won't work. | |
10542 | Instead compare pc addresses; this is just a heuristic as things | |
10543 | may have moved, but in practice it gives the correct answer | |
10544 | often enough until a better solution is found. */ | |
10545 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10546 | ||
0d381245 VP |
10547 | for (; e; e = e->next) |
10548 | { | |
10549 | if (!e->enabled && e->function_name) | |
10550 | { | |
10551 | struct bp_location *l = b->loc; | |
776592bf DE |
10552 | if (have_ambiguous_names) |
10553 | { | |
10554 | for (; l; l = l->next) | |
6c95b8df PA |
10555 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
10556 | l->pspace->aspace, l->address)) | |
776592bf DE |
10557 | { |
10558 | l->enabled = 0; | |
10559 | break; | |
10560 | } | |
10561 | } | |
10562 | else | |
10563 | { | |
10564 | for (; l; l = l->next) | |
10565 | if (l->function_name | |
10566 | && strcmp (e->function_name, l->function_name) == 0) | |
10567 | { | |
10568 | l->enabled = 0; | |
10569 | break; | |
10570 | } | |
10571 | } | |
0d381245 VP |
10572 | } |
10573 | } | |
10574 | } | |
fe3f5fa8 | 10575 | |
b60e7edf | 10576 | update_global_location_list (1); |
fe3f5fa8 VP |
10577 | } |
10578 | ||
ef23e705 TJB |
10579 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
10580 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
10581 | ||
10582 | static struct symtabs_and_lines | |
10583 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
10584 | { | |
10585 | char *s; | |
10586 | int marker_spec, not_found; | |
02d20e4a | 10587 | struct symtabs_and_lines sals = {0}; |
ef23e705 TJB |
10588 | struct gdb_exception e; |
10589 | ||
10590 | s = addr_string; | |
10591 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); | |
10592 | ||
10593 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10594 | { | |
10595 | if (marker_spec) | |
10596 | { | |
10597 | sals = decode_static_tracepoint_spec (&s); | |
10598 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10599 | { | |
10600 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10601 | sals.nelts = 1; | |
10602 | } | |
10603 | else | |
10604 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10605 | } | |
10606 | else | |
10607 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, | |
10608 | NULL, ¬_found); | |
10609 | } | |
10610 | if (e.reason < 0) | |
10611 | { | |
10612 | int not_found_and_ok = 0; | |
10613 | /* For pending breakpoints, it's expected that parsing will | |
10614 | fail until the right shared library is loaded. User has | |
10615 | already told to create pending breakpoints and don't need | |
10616 | extra messages. If breakpoint is in bp_shlib_disabled | |
10617 | state, then user already saw the message about that | |
10618 | breakpoint being disabled, and don't want to see more | |
10619 | errors. */ | |
10620 | if (not_found | |
10621 | && (b->condition_not_parsed | |
10622 | || (b->loc && b->loc->shlib_disabled) | |
10623 | || b->enable_state == bp_disabled)) | |
10624 | not_found_and_ok = 1; | |
10625 | ||
10626 | if (!not_found_and_ok) | |
10627 | { | |
10628 | /* We surely don't want to warn about the same breakpoint | |
10629 | 10 times. One solution, implemented here, is disable | |
10630 | the breakpoint on error. Another solution would be to | |
10631 | have separate 'warning emitted' flag. Since this | |
10632 | happens only when a binary has changed, I don't know | |
10633 | which approach is better. */ | |
10634 | b->enable_state = bp_disabled; | |
10635 | throw_exception (e); | |
10636 | } | |
10637 | } | |
10638 | ||
10639 | if (!not_found) | |
10640 | { | |
10641 | gdb_assert (sals.nelts == 1); | |
10642 | ||
10643 | resolve_sal_pc (&sals.sals[0]); | |
10644 | if (b->condition_not_parsed && s && s[0]) | |
10645 | { | |
10646 | char *cond_string = 0; | |
10647 | int thread = -1; | |
10648 | int task = 0; | |
10649 | ||
10650 | find_condition_and_thread (s, sals.sals[0].pc, | |
10651 | &cond_string, &thread, &task); | |
10652 | if (cond_string) | |
10653 | b->cond_string = cond_string; | |
10654 | b->thread = thread; | |
10655 | b->task = task; | |
10656 | b->condition_not_parsed = 0; | |
10657 | } | |
10658 | ||
10659 | if (b->type == bp_static_tracepoint && !marker_spec) | |
10660 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
10661 | } | |
10662 | ||
10663 | *found = !not_found; | |
10664 | ||
10665 | return sals; | |
10666 | } | |
10667 | ||
10668 | /* Reevaluate a hardware or software breakpoint and recreate its locations. | |
10669 | This is necessary after symbols are read (e.g., an executable or DSO | |
10670 | was loaded, or the inferior just started). */ | |
10671 | ||
10672 | static void | |
10673 | re_set_breakpoint (struct breakpoint *b) | |
10674 | { | |
10675 | int found; | |
10676 | struct symtabs_and_lines sals; | |
10677 | struct symtabs_and_lines expanded = {0}; | |
10678 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); | |
10679 | ||
10680 | input_radix = b->input_radix; | |
10681 | save_current_space_and_thread (); | |
10682 | switch_to_program_space_and_thread (b->pspace); | |
10683 | set_language (b->language); | |
10684 | ||
10685 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
10686 | if (found) | |
10687 | { | |
10688 | make_cleanup (xfree, sals.sals); | |
10689 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
10690 | } | |
10691 | ||
10692 | update_breakpoint_locations (b, expanded); | |
10693 | do_cleanups (cleanups); | |
10694 | } | |
10695 | ||
c906108c SS |
10696 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
10697 | The value we return ends up being the return value from catch_errors. | |
10698 | Unused in this case. */ | |
10699 | ||
10700 | static int | |
4efb68b1 | 10701 | breakpoint_re_set_one (void *bint) |
c906108c | 10702 | { |
4a64f543 | 10703 | /* Get past catch_errs. */ |
53a5351d | 10704 | struct breakpoint *b = (struct breakpoint *) bint; |
c906108c SS |
10705 | |
10706 | switch (b->type) | |
10707 | { | |
10708 | case bp_none: | |
8a3fe4f8 | 10709 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 10710 | b->number); |
c906108c SS |
10711 | return 0; |
10712 | case bp_breakpoint: | |
10713 | case bp_hardware_breakpoint: | |
1042e4c0 | 10714 | case bp_tracepoint: |
7a697b8d | 10715 | case bp_fast_tracepoint: |
0fb4aa4b | 10716 | case bp_static_tracepoint: |
0e30163f | 10717 | case bp_gnu_ifunc_resolver: |
8bea4e01 UW |
10718 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10719 | if (b->enable_state == bp_startup_disabled) | |
10720 | return 0; | |
10721 | ||
c906108c SS |
10722 | if (b->addr_string == NULL) |
10723 | { | |
4a64f543 | 10724 | /* Anything without a string can't be re-set. */ |
c906108c SS |
10725 | delete_breakpoint (b); |
10726 | return 0; | |
10727 | } | |
c906108c | 10728 | |
ef23e705 | 10729 | re_set_breakpoint (b); |
c906108c SS |
10730 | break; |
10731 | ||
10732 | case bp_watchpoint: | |
10733 | case bp_hardware_watchpoint: | |
10734 | case bp_read_watchpoint: | |
10735 | case bp_access_watchpoint: | |
4a64f543 MS |
10736 | /* Watchpoint can be either on expression using entirely global |
10737 | variables, or it can be on local variables. | |
10738 | ||
10739 | Watchpoints of the first kind are never auto-deleted, and | |
10740 | even persist across program restarts. Since they can use | |
10741 | variables from shared libraries, we need to reparse | |
10742 | expression as libraries are loaded and unloaded. | |
10743 | ||
10744 | Watchpoints on local variables can also change meaning as | |
10745 | result of solib event. For example, if a watchpoint uses | |
10746 | both a local and a global variables in expression, it's a | |
10747 | local watchpoint, but unloading of a shared library will make | |
10748 | the expression invalid. This is not a very common use case, | |
10749 | but we still re-evaluate expression, to avoid surprises to | |
10750 | the user. | |
0b3de036 VP |
10751 | |
10752 | Note that for local watchpoints, we re-evaluate it only if | |
10753 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
10754 | the watchpoint is out of scope and will be deleted soon. In |
10755 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
10756 | |
10757 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 10758 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
10759 | |
10760 | Don't do anything about disabled watchpoints, since they will | |
10761 | be reevaluated again when enabled. */ | |
a5606eee | 10762 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 10763 | break; |
c5aa993b JM |
10764 | /* We needn't really do anything to reset these, since the mask |
10765 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 10766 | loaded. */ |
ce78b96d | 10767 | case bp_catchpoint: |
c906108c | 10768 | break; |
c5aa993b | 10769 | |
c906108c | 10770 | default: |
a3f17187 | 10771 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 10772 | /* fall through */ |
0fd8e87f UW |
10773 | /* Delete overlay event and longjmp master breakpoints; they will be |
10774 | reset later by breakpoint_re_set. */ | |
1900040c | 10775 | case bp_overlay_event: |
0fd8e87f | 10776 | case bp_longjmp_master: |
aa7d318d | 10777 | case bp_std_terminate_master: |
186c406b | 10778 | case bp_exception_master: |
c906108c SS |
10779 | delete_breakpoint (b); |
10780 | break; | |
10781 | ||
c5aa993b JM |
10782 | /* This breakpoint is special, it's set up when the inferior |
10783 | starts and we really don't want to touch it. */ | |
c906108c SS |
10784 | case bp_shlib_event: |
10785 | ||
c4093a6a JM |
10786 | /* Like bp_shlib_event, this breakpoint type is special. |
10787 | Once it is set up, we do not want to touch it. */ | |
10788 | case bp_thread_event: | |
10789 | ||
4a64f543 MS |
10790 | /* Keep temporary breakpoints, which can be encountered when we |
10791 | step over a dlopen call and SOLIB_ADD is resetting the | |
10792 | breakpoints. Otherwise these should have been blown away via | |
10793 | the cleanup chain or by breakpoint_init_inferior when we | |
10794 | rerun the executable. */ | |
c906108c SS |
10795 | case bp_until: |
10796 | case bp_finish: | |
10797 | case bp_watchpoint_scope: | |
10798 | case bp_call_dummy: | |
aa7d318d | 10799 | case bp_std_terminate: |
c906108c | 10800 | case bp_step_resume: |
611c83ae PA |
10801 | case bp_longjmp: |
10802 | case bp_longjmp_resume: | |
186c406b TT |
10803 | case bp_exception: |
10804 | case bp_exception_resume: | |
4efc6507 | 10805 | case bp_jit_event: |
0e30163f | 10806 | case bp_gnu_ifunc_resolver_return: |
c906108c SS |
10807 | break; |
10808 | } | |
10809 | ||
10810 | return 0; | |
10811 | } | |
10812 | ||
69de3c6a | 10813 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 10814 | void |
69de3c6a | 10815 | breakpoint_re_set (void) |
c906108c | 10816 | { |
35df4500 | 10817 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10818 | enum language save_language; |
10819 | int save_input_radix; | |
6c95b8df | 10820 | struct cleanup *old_chain; |
c5aa993b | 10821 | |
c906108c SS |
10822 | save_language = current_language->la_language; |
10823 | save_input_radix = input_radix; | |
6c95b8df PA |
10824 | old_chain = save_current_program_space (); |
10825 | ||
35df4500 | 10826 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10827 | { |
4a64f543 | 10828 | /* Format possible error msg. */ |
fe3f5fa8 | 10829 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
10830 | b->number); |
10831 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 10832 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 10833 | do_cleanups (cleanups); |
c5aa993b | 10834 | } |
c906108c SS |
10835 | set_language (save_language); |
10836 | input_radix = save_input_radix; | |
e62c965a | 10837 | |
0756c555 | 10838 | jit_breakpoint_re_set (); |
4efc6507 | 10839 | |
6c95b8df PA |
10840 | do_cleanups (old_chain); |
10841 | ||
af02033e PP |
10842 | create_overlay_event_breakpoint (); |
10843 | create_longjmp_master_breakpoint (); | |
10844 | create_std_terminate_master_breakpoint (); | |
186c406b | 10845 | create_exception_master_breakpoint (); |
c906108c SS |
10846 | } |
10847 | \f | |
c906108c SS |
10848 | /* Reset the thread number of this breakpoint: |
10849 | ||
10850 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 10851 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 10852 | void |
fba45db2 | 10853 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
10854 | { |
10855 | if (b->thread != -1) | |
10856 | { | |
39f77062 KB |
10857 | if (in_thread_list (inferior_ptid)) |
10858 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
10859 | |
10860 | /* We're being called after following a fork. The new fork is | |
10861 | selected as current, and unless this was a vfork will have a | |
10862 | different program space from the original thread. Reset that | |
10863 | as well. */ | |
10864 | b->loc->pspace = current_program_space; | |
c906108c SS |
10865 | } |
10866 | } | |
10867 | ||
03ac34d5 MS |
10868 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10869 | If from_tty is nonzero, it prints a message to that effect, | |
10870 | which ends with a period (no newline). */ | |
10871 | ||
c906108c | 10872 | void |
fba45db2 | 10873 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 10874 | { |
52f0bd74 | 10875 | struct breakpoint *b; |
c906108c SS |
10876 | |
10877 | if (count < 0) | |
10878 | count = 0; | |
10879 | ||
10880 | ALL_BREAKPOINTS (b) | |
10881 | if (b->number == bptnum) | |
c5aa993b | 10882 | { |
d77f58be SS |
10883 | if (is_tracepoint (b)) |
10884 | { | |
10885 | if (from_tty && count != 0) | |
10886 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
10887 | bptnum); | |
10888 | return; | |
10889 | } | |
10890 | ||
c5aa993b | 10891 | b->ignore_count = count; |
221ea385 KS |
10892 | if (from_tty) |
10893 | { | |
10894 | if (count == 0) | |
3e43a32a MS |
10895 | printf_filtered (_("Will stop next time " |
10896 | "breakpoint %d is reached."), | |
221ea385 KS |
10897 | bptnum); |
10898 | else if (count == 1) | |
a3f17187 | 10899 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10900 | bptnum); |
10901 | else | |
3e43a32a MS |
10902 | printf_filtered (_("Will ignore next %d " |
10903 | "crossings of breakpoint %d."), | |
221ea385 KS |
10904 | count, bptnum); |
10905 | } | |
c5aa993b | 10906 | breakpoints_changed (); |
383f836e | 10907 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10908 | return; |
10909 | } | |
c906108c | 10910 | |
8a3fe4f8 | 10911 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10912 | } |
10913 | ||
c906108c SS |
10914 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10915 | ||
10916 | static void | |
fba45db2 | 10917 | ignore_command (char *args, int from_tty) |
c906108c SS |
10918 | { |
10919 | char *p = args; | |
52f0bd74 | 10920 | int num; |
c906108c SS |
10921 | |
10922 | if (p == 0) | |
e2e0b3e5 | 10923 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10924 | |
c906108c | 10925 | num = get_number (&p); |
5c44784c | 10926 | if (num == 0) |
8a3fe4f8 | 10927 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10928 | if (*p == 0) |
8a3fe4f8 | 10929 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10930 | |
10931 | set_ignore_count (num, | |
10932 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10933 | from_tty); | |
221ea385 KS |
10934 | if (from_tty) |
10935 | printf_filtered ("\n"); | |
c906108c SS |
10936 | } |
10937 | \f | |
10938 | /* Call FUNCTION on each of the breakpoints | |
10939 | whose numbers are given in ARGS. */ | |
10940 | ||
10941 | static void | |
95a42b64 TT |
10942 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10943 | void *), | |
10944 | void *data) | |
c906108c | 10945 | { |
52f0bd74 AC |
10946 | int num; |
10947 | struct breakpoint *b, *tmp; | |
11cf8741 | 10948 | int match; |
197f0a60 | 10949 | struct get_number_or_range_state state; |
c906108c | 10950 | |
197f0a60 | 10951 | if (args == 0) |
e2e0b3e5 | 10952 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 10953 | |
197f0a60 TT |
10954 | init_number_or_range (&state, args); |
10955 | ||
10956 | while (!state.finished) | |
c906108c | 10957 | { |
197f0a60 TT |
10958 | char *p = state.string; |
10959 | ||
11cf8741 | 10960 | match = 0; |
c5aa993b | 10961 | |
197f0a60 | 10962 | num = get_number_or_range (&state); |
5c44784c | 10963 | if (num == 0) |
c5aa993b | 10964 | { |
8a3fe4f8 | 10965 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10966 | } |
10967 | else | |
10968 | { | |
10969 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10970 | if (b->number == num) | |
10971 | { | |
d0fb5eae JK |
10972 | struct breakpoint *related_breakpoint; |
10973 | ||
11cf8741 | 10974 | match = 1; |
d0fb5eae JK |
10975 | related_breakpoint = b; |
10976 | do | |
10977 | { | |
10978 | struct breakpoint *next_related_b; | |
10979 | ||
10980 | /* FUNCTION can be also delete_breakpoint. */ | |
10981 | next_related_b = related_breakpoint->related_breakpoint; | |
10982 | function (related_breakpoint, data); | |
10983 | ||
10984 | /* For delete_breakpoint of the last entry of the ring we | |
10985 | were traversing we would never get back to B. */ | |
10986 | if (next_related_b == related_breakpoint) | |
10987 | break; | |
10988 | related_breakpoint = next_related_b; | |
10989 | } | |
10990 | while (related_breakpoint != b); | |
11cf8741 | 10991 | break; |
5c44784c | 10992 | } |
11cf8741 | 10993 | if (match == 0) |
a3f17187 | 10994 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10995 | } |
c906108c SS |
10996 | } |
10997 | } | |
10998 | ||
0d381245 VP |
10999 | static struct bp_location * |
11000 | find_location_by_number (char *number) | |
11001 | { | |
11002 | char *dot = strchr (number, '.'); | |
11003 | char *p1; | |
11004 | int bp_num; | |
11005 | int loc_num; | |
11006 | struct breakpoint *b; | |
11007 | struct bp_location *loc; | |
11008 | ||
11009 | *dot = '\0'; | |
11010 | ||
11011 | p1 = number; | |
197f0a60 | 11012 | bp_num = get_number (&p1); |
0d381245 VP |
11013 | if (bp_num == 0) |
11014 | error (_("Bad breakpoint number '%s'"), number); | |
11015 | ||
11016 | ALL_BREAKPOINTS (b) | |
11017 | if (b->number == bp_num) | |
11018 | { | |
11019 | break; | |
11020 | } | |
11021 | ||
11022 | if (!b || b->number != bp_num) | |
11023 | error (_("Bad breakpoint number '%s'"), number); | |
11024 | ||
11025 | p1 = dot+1; | |
197f0a60 | 11026 | loc_num = get_number (&p1); |
0d381245 VP |
11027 | if (loc_num == 0) |
11028 | error (_("Bad breakpoint location number '%s'"), number); | |
11029 | ||
11030 | --loc_num; | |
11031 | loc = b->loc; | |
11032 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
11033 | ; | |
11034 | if (!loc) | |
11035 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
11036 | ||
11037 | return loc; | |
11038 | } | |
11039 | ||
11040 | ||
1900040c MS |
11041 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
11042 | If from_tty is nonzero, it prints a message to that effect, | |
11043 | which ends with a period (no newline). */ | |
11044 | ||
c906108c | 11045 | void |
fba45db2 | 11046 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11047 | { |
11048 | /* Never disable a watchpoint scope breakpoint; we want to | |
11049 | hit them when we leave scope so we can delete both the | |
11050 | watchpoint and its scope breakpoint at that time. */ | |
11051 | if (bpt->type == bp_watchpoint_scope) | |
11052 | return; | |
11053 | ||
c2c6d25f | 11054 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 11055 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
11056 | return; |
11057 | ||
b5de0fa7 | 11058 | bpt->enable_state = bp_disabled; |
c906108c | 11059 | |
b60e7edf | 11060 | update_global_location_list (0); |
c906108c | 11061 | |
383f836e | 11062 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
11063 | } |
11064 | ||
95a42b64 TT |
11065 | /* A callback for map_breakpoint_numbers that calls |
11066 | disable_breakpoint. */ | |
11067 | ||
11068 | static void | |
11069 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
11070 | { | |
11071 | disable_breakpoint (b); | |
11072 | } | |
11073 | ||
c906108c | 11074 | static void |
fba45db2 | 11075 | disable_command (char *args, int from_tty) |
c906108c | 11076 | { |
52f0bd74 | 11077 | struct breakpoint *bpt; |
cc59ec59 | 11078 | |
c906108c SS |
11079 | if (args == 0) |
11080 | ALL_BREAKPOINTS (bpt) | |
11081 | switch (bpt->type) | |
c5aa993b JM |
11082 | { |
11083 | case bp_none: | |
8a3fe4f8 | 11084 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 11085 | bpt->number); |
488919c4 | 11086 | break; |
c5aa993b | 11087 | case bp_breakpoint: |
1042e4c0 | 11088 | case bp_tracepoint: |
7a697b8d | 11089 | case bp_fast_tracepoint: |
0fb4aa4b | 11090 | case bp_static_tracepoint: |
ce78b96d | 11091 | case bp_catchpoint: |
c5aa993b JM |
11092 | case bp_hardware_breakpoint: |
11093 | case bp_watchpoint: | |
11094 | case bp_hardware_watchpoint: | |
11095 | case bp_read_watchpoint: | |
11096 | case bp_access_watchpoint: | |
11097 | disable_breakpoint (bpt); | |
488919c4 | 11098 | break; |
c5aa993b | 11099 | default: |
488919c4 | 11100 | break; |
c5aa993b | 11101 | } |
0d381245 VP |
11102 | else if (strchr (args, '.')) |
11103 | { | |
11104 | struct bp_location *loc = find_location_by_number (args); | |
11105 | if (loc) | |
11106 | loc->enabled = 0; | |
b60e7edf | 11107 | update_global_location_list (0); |
0d381245 | 11108 | } |
c906108c | 11109 | else |
95a42b64 | 11110 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
11111 | } |
11112 | ||
11113 | static void | |
fba45db2 | 11114 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 11115 | { |
afe38095 | 11116 | int target_resources_ok; |
c906108c SS |
11117 | |
11118 | if (bpt->type == bp_hardware_breakpoint) | |
11119 | { | |
11120 | int i; | |
c5aa993b | 11121 | i = hw_breakpoint_used_count (); |
53a5351d | 11122 | target_resources_ok = |
d92524f1 | 11123 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 11124 | i + 1, 0); |
c906108c | 11125 | if (target_resources_ok == 0) |
8a3fe4f8 | 11126 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 11127 | else if (target_resources_ok < 0) |
8a3fe4f8 | 11128 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
11129 | } |
11130 | ||
cc60f2e3 | 11131 | if (is_watchpoint (bpt)) |
c906108c | 11132 | { |
dde02812 ES |
11133 | struct gdb_exception e; |
11134 | ||
11135 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 11136 | { |
dde02812 | 11137 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 11138 | } |
dde02812 | 11139 | if (e.reason < 0) |
c5aa993b | 11140 | { |
dde02812 ES |
11141 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
11142 | bpt->number); | |
11143 | return; | |
c5aa993b | 11144 | } |
c906108c | 11145 | } |
0101ce28 | 11146 | |
b4c291bb KH |
11147 | if (bpt->enable_state != bp_permanent) |
11148 | bpt->enable_state = bp_enabled; | |
11149 | bpt->disposition = disposition; | |
b60e7edf | 11150 | update_global_location_list (1); |
b4c291bb KH |
11151 | breakpoints_changed (); |
11152 | ||
383f836e | 11153 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
11154 | } |
11155 | ||
fe3f5fa8 | 11156 | |
c906108c | 11157 | void |
fba45db2 | 11158 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
11159 | { |
11160 | do_enable_breakpoint (bpt, bpt->disposition); | |
11161 | } | |
11162 | ||
95a42b64 TT |
11163 | /* A callback for map_breakpoint_numbers that calls |
11164 | enable_breakpoint. */ | |
11165 | ||
11166 | static void | |
11167 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
11168 | { | |
11169 | enable_breakpoint (b); | |
11170 | } | |
11171 | ||
c906108c SS |
11172 | /* The enable command enables the specified breakpoints (or all defined |
11173 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 11174 | in stopping the inferior. */ |
c906108c | 11175 | |
c906108c | 11176 | static void |
fba45db2 | 11177 | enable_command (char *args, int from_tty) |
c906108c | 11178 | { |
52f0bd74 | 11179 | struct breakpoint *bpt; |
cc59ec59 | 11180 | |
c906108c SS |
11181 | if (args == 0) |
11182 | ALL_BREAKPOINTS (bpt) | |
11183 | switch (bpt->type) | |
c5aa993b JM |
11184 | { |
11185 | case bp_none: | |
8a3fe4f8 | 11186 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 11187 | bpt->number); |
488919c4 | 11188 | break; |
c5aa993b | 11189 | case bp_breakpoint: |
1042e4c0 | 11190 | case bp_tracepoint: |
7a697b8d | 11191 | case bp_fast_tracepoint: |
0fb4aa4b | 11192 | case bp_static_tracepoint: |
ce78b96d | 11193 | case bp_catchpoint: |
c5aa993b JM |
11194 | case bp_hardware_breakpoint: |
11195 | case bp_watchpoint: | |
11196 | case bp_hardware_watchpoint: | |
11197 | case bp_read_watchpoint: | |
11198 | case bp_access_watchpoint: | |
11199 | enable_breakpoint (bpt); | |
488919c4 | 11200 | break; |
c5aa993b | 11201 | default: |
488919c4 | 11202 | break; |
c5aa993b | 11203 | } |
0d381245 VP |
11204 | else if (strchr (args, '.')) |
11205 | { | |
11206 | struct bp_location *loc = find_location_by_number (args); | |
11207 | if (loc) | |
11208 | loc->enabled = 1; | |
b60e7edf | 11209 | update_global_location_list (1); |
0d381245 | 11210 | } |
c906108c | 11211 | else |
95a42b64 | 11212 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
11213 | } |
11214 | ||
11215 | static void | |
95a42b64 | 11216 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11217 | { |
b5de0fa7 | 11218 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
11219 | } |
11220 | ||
c906108c | 11221 | static void |
fba45db2 | 11222 | enable_once_command (char *args, int from_tty) |
c906108c | 11223 | { |
95a42b64 | 11224 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
11225 | } |
11226 | ||
11227 | static void | |
95a42b64 | 11228 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 11229 | { |
b5de0fa7 | 11230 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
11231 | } |
11232 | ||
c906108c | 11233 | static void |
fba45db2 | 11234 | enable_delete_command (char *args, int from_tty) |
c906108c | 11235 | { |
95a42b64 | 11236 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
11237 | } |
11238 | \f | |
fa8d40ab JJ |
11239 | static void |
11240 | set_breakpoint_cmd (char *args, int from_tty) | |
11241 | { | |
11242 | } | |
11243 | ||
11244 | static void | |
11245 | show_breakpoint_cmd (char *args, int from_tty) | |
11246 | { | |
11247 | } | |
11248 | ||
1f3b5d1b PP |
11249 | /* Invalidate last known value of any hardware watchpoint if |
11250 | the memory which that value represents has been written to by | |
11251 | GDB itself. */ | |
11252 | ||
11253 | static void | |
11254 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
11255 | const bfd_byte *data) | |
11256 | { | |
11257 | struct breakpoint *bp; | |
11258 | ||
11259 | ALL_BREAKPOINTS (bp) | |
11260 | if (bp->enable_state == bp_enabled | |
11261 | && bp->type == bp_hardware_watchpoint | |
11262 | && bp->val_valid && bp->val) | |
11263 | { | |
11264 | struct bp_location *loc; | |
11265 | ||
11266 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
11267 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
11268 | && loc->address + loc->length > addr | |
11269 | && addr + len > loc->address) | |
11270 | { | |
11271 | value_free (bp->val); | |
11272 | bp->val = NULL; | |
11273 | bp->val_valid = 0; | |
11274 | } | |
11275 | } | |
11276 | } | |
11277 | ||
c906108c SS |
11278 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
11279 | ||
11280 | struct symtabs_and_lines | |
fba45db2 | 11281 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
11282 | { |
11283 | struct symtabs_and_lines sals; | |
cc59ec59 | 11284 | |
c906108c | 11285 | if (string == 0) |
8a3fe4f8 | 11286 | error (_("Empty line specification.")); |
c906108c SS |
11287 | if (default_breakpoint_valid) |
11288 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
11289 | default_breakpoint_symtab, |
11290 | default_breakpoint_line, | |
7efd8fc2 | 11291 | NULL, NULL); |
c906108c SS |
11292 | else |
11293 | sals = decode_line_1 (&string, funfirstline, | |
7efd8fc2 | 11294 | (struct symtab *) NULL, 0, NULL, NULL); |
c906108c | 11295 | if (*string) |
8a3fe4f8 | 11296 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
11297 | return sals; |
11298 | } | |
8181d85f DJ |
11299 | |
11300 | /* Create and insert a raw software breakpoint at PC. Return an | |
11301 | identifier, which should be used to remove the breakpoint later. | |
11302 | In general, places which call this should be using something on the | |
11303 | breakpoint chain instead; this function should be eliminated | |
11304 | someday. */ | |
11305 | ||
11306 | void * | |
6c95b8df PA |
11307 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
11308 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
11309 | { |
11310 | struct bp_target_info *bp_tgt; | |
11311 | ||
6c95b8df | 11312 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 11313 | |
6c95b8df | 11314 | bp_tgt->placed_address_space = aspace; |
8181d85f | 11315 | bp_tgt->placed_address = pc; |
6c95b8df | 11316 | |
a6d9a66e | 11317 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
11318 | { |
11319 | /* Could not insert the breakpoint. */ | |
11320 | xfree (bp_tgt); | |
11321 | return NULL; | |
11322 | } | |
11323 | ||
11324 | return bp_tgt; | |
11325 | } | |
11326 | ||
4a64f543 MS |
11327 | /* Remove a breakpoint BP inserted by |
11328 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11329 | |
11330 | int | |
a6d9a66e | 11331 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11332 | { |
11333 | struct bp_target_info *bp_tgt = bp; | |
11334 | int ret; | |
11335 | ||
a6d9a66e | 11336 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11337 | xfree (bp_tgt); |
11338 | ||
11339 | return ret; | |
11340 | } | |
11341 | ||
4a64f543 MS |
11342 | /* One (or perhaps two) breakpoints used for software single |
11343 | stepping. */ | |
8181d85f DJ |
11344 | |
11345 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11346 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11347 | |
11348 | /* Create and insert a breakpoint for software single step. */ | |
11349 | ||
11350 | void | |
6c95b8df | 11351 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11352 | struct address_space *aspace, |
11353 | CORE_ADDR next_pc) | |
8181d85f DJ |
11354 | { |
11355 | void **bpt_p; | |
11356 | ||
11357 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11358 | { |
11359 | bpt_p = &single_step_breakpoints[0]; | |
11360 | single_step_gdbarch[0] = gdbarch; | |
11361 | } | |
8181d85f DJ |
11362 | else |
11363 | { | |
11364 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11365 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11366 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11367 | } |
11368 | ||
4a64f543 MS |
11369 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11370 | be to only create the breakpoints once, and actually put them on | |
11371 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11372 | We could adjust the addresses each time they were needed. Doing | |
11373 | this requires corresponding changes elsewhere where single step | |
11374 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11375 | |
6c95b8df | 11376 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11377 | if (*bpt_p == NULL) |
5af949e3 UW |
11378 | error (_("Could not insert single-step breakpoint at %s"), |
11379 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11380 | } |
11381 | ||
f02253f1 HZ |
11382 | /* Check if the breakpoints used for software single stepping |
11383 | were inserted or not. */ | |
11384 | ||
11385 | int | |
11386 | single_step_breakpoints_inserted (void) | |
11387 | { | |
11388 | return (single_step_breakpoints[0] != NULL | |
11389 | || single_step_breakpoints[1] != NULL); | |
11390 | } | |
11391 | ||
8181d85f DJ |
11392 | /* Remove and delete any breakpoints used for software single step. */ |
11393 | ||
11394 | void | |
11395 | remove_single_step_breakpoints (void) | |
11396 | { | |
11397 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11398 | ||
11399 | /* See insert_single_step_breakpoint for more about this deprecated | |
11400 | call. */ | |
a6d9a66e UW |
11401 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11402 | single_step_breakpoints[0]); | |
11403 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11404 | single_step_breakpoints[0] = NULL; |
11405 | ||
11406 | if (single_step_breakpoints[1] != NULL) | |
11407 | { | |
a6d9a66e UW |
11408 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11409 | single_step_breakpoints[1]); | |
11410 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11411 | single_step_breakpoints[1] = NULL; |
11412 | } | |
11413 | } | |
11414 | ||
d03285ec UW |
11415 | /* Delete software single step breakpoints without removing them from |
11416 | the inferior. This is intended to be used if the inferior's address | |
11417 | space where they were inserted is already gone, e.g. after exit or | |
11418 | exec. */ | |
11419 | ||
11420 | void | |
11421 | cancel_single_step_breakpoints (void) | |
11422 | { | |
11423 | int i; | |
11424 | ||
11425 | for (i = 0; i < 2; i++) | |
11426 | if (single_step_breakpoints[i]) | |
11427 | { | |
11428 | xfree (single_step_breakpoints[i]); | |
11429 | single_step_breakpoints[i] = NULL; | |
11430 | single_step_gdbarch[i] = NULL; | |
11431 | } | |
11432 | } | |
11433 | ||
11434 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11435 | removing them. */ | |
11436 | ||
11437 | static void | |
11438 | detach_single_step_breakpoints (void) | |
11439 | { | |
11440 | int i; | |
11441 | ||
11442 | for (i = 0; i < 2; i++) | |
11443 | if (single_step_breakpoints[i]) | |
11444 | target_remove_breakpoint (single_step_gdbarch[i], | |
11445 | single_step_breakpoints[i]); | |
11446 | } | |
11447 | ||
4a64f543 MS |
11448 | /* Check whether a software single-step breakpoint is inserted at |
11449 | PC. */ | |
1aafd4da UW |
11450 | |
11451 | static int | |
cc59ec59 MS |
11452 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11453 | CORE_ADDR pc) | |
1aafd4da UW |
11454 | { |
11455 | int i; | |
11456 | ||
11457 | for (i = 0; i < 2; i++) | |
11458 | { | |
11459 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11460 | if (bp_tgt |
11461 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11462 | bp_tgt->placed_address, | |
11463 | aspace, pc)) | |
1aafd4da UW |
11464 | return 1; |
11465 | } | |
11466 | ||
11467 | return 0; | |
11468 | } | |
11469 | ||
a96d9b2e SDJ |
11470 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11471 | non-zero otherwise. */ | |
11472 | static int | |
11473 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11474 | { | |
11475 | if (syscall_catchpoint_p (bp) | |
11476 | && bp->enable_state != bp_disabled | |
11477 | && bp->enable_state != bp_call_disabled) | |
11478 | return 1; | |
11479 | else | |
11480 | return 0; | |
11481 | } | |
11482 | ||
11483 | int | |
11484 | catch_syscall_enabled (void) | |
11485 | { | |
11486 | struct inferior *inf = current_inferior (); | |
11487 | ||
11488 | return inf->total_syscalls_count != 0; | |
11489 | } | |
11490 | ||
11491 | int | |
11492 | catching_syscall_number (int syscall_number) | |
11493 | { | |
11494 | struct breakpoint *bp; | |
11495 | ||
11496 | ALL_BREAKPOINTS (bp) | |
11497 | if (is_syscall_catchpoint_enabled (bp)) | |
11498 | { | |
11499 | if (bp->syscalls_to_be_caught) | |
11500 | { | |
11501 | int i, iter; | |
11502 | for (i = 0; | |
11503 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11504 | i++) | |
11505 | if (syscall_number == iter) | |
11506 | return 1; | |
11507 | } | |
11508 | else | |
11509 | return 1; | |
11510 | } | |
11511 | ||
11512 | return 0; | |
11513 | } | |
11514 | ||
11515 | /* Complete syscall names. Used by "catch syscall". */ | |
11516 | static char ** | |
11517 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11518 | char *text, char *word) | |
11519 | { | |
11520 | const char **list = get_syscall_names (); | |
c38eea1a MS |
11521 | char **retlist |
11522 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 11523 | |
c38eea1a MS |
11524 | xfree (list); |
11525 | return retlist; | |
a96d9b2e SDJ |
11526 | } |
11527 | ||
1042e4c0 SS |
11528 | /* Tracepoint-specific operations. */ |
11529 | ||
11530 | /* Set tracepoint count to NUM. */ | |
11531 | static void | |
11532 | set_tracepoint_count (int num) | |
11533 | { | |
11534 | tracepoint_count = num; | |
4fa62494 | 11535 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11536 | } |
11537 | ||
11538 | void | |
11539 | trace_command (char *arg, int from_tty) | |
11540 | { | |
8cdf0e15 VP |
11541 | if (create_breakpoint (get_current_arch (), |
11542 | arg, | |
11543 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11544 | 0 /* tempflag */, |
11545 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11546 | 0 /* Ignore count */, |
11547 | pending_break_support, | |
11548 | NULL, | |
11549 | from_tty, | |
84f4c1fe PM |
11550 | 1 /* enabled */, |
11551 | 0 /* internal */)) | |
fd9b8c24 | 11552 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11553 | } |
11554 | ||
7a697b8d SS |
11555 | void |
11556 | ftrace_command (char *arg, int from_tty) | |
11557 | { | |
8cdf0e15 VP |
11558 | if (create_breakpoint (get_current_arch (), |
11559 | arg, | |
11560 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11561 | 0 /* tempflag */, |
11562 | bp_fast_tracepoint /* type_wanted */, | |
11563 | 0 /* Ignore count */, | |
11564 | pending_break_support, | |
11565 | NULL, | |
11566 | from_tty, | |
84f4c1fe PM |
11567 | 1 /* enabled */, |
11568 | 0 /* internal */)) | |
0fb4aa4b PA |
11569 | set_tracepoint_count (breakpoint_count); |
11570 | } | |
11571 | ||
11572 | /* strace command implementation. Creates a static tracepoint. */ | |
11573 | ||
11574 | void | |
11575 | strace_command (char *arg, int from_tty) | |
11576 | { | |
11577 | if (create_breakpoint (get_current_arch (), | |
11578 | arg, | |
11579 | NULL, 0, 1 /* parse arg */, | |
11580 | 0 /* tempflag */, | |
11581 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11582 | 0 /* Ignore count */, |
11583 | pending_break_support, | |
11584 | NULL, | |
11585 | from_tty, | |
84f4c1fe PM |
11586 | 1 /* enabled */, |
11587 | 0 /* internal */)) | |
fd9b8c24 | 11588 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11589 | } |
11590 | ||
409873ef SS |
11591 | /* Set up a fake reader function that gets command lines from a linked |
11592 | list that was acquired during tracepoint uploading. */ | |
11593 | ||
11594 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11595 | static int next_cmd; |
409873ef SS |
11596 | |
11597 | static char * | |
11598 | read_uploaded_action (void) | |
11599 | { | |
11600 | char *rslt; | |
11601 | ||
3149d8c1 | 11602 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11603 | |
3149d8c1 | 11604 | next_cmd++; |
409873ef SS |
11605 | |
11606 | return rslt; | |
11607 | } | |
11608 | ||
00bf0b85 SS |
11609 | /* Given information about a tracepoint as recorded on a target (which |
11610 | can be either a live system or a trace file), attempt to create an | |
11611 | equivalent GDB tracepoint. This is not a reliable process, since | |
11612 | the target does not necessarily have all the information used when | |
11613 | the tracepoint was originally defined. */ | |
11614 | ||
11615 | struct breakpoint * | |
11616 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11617 | { |
409873ef | 11618 | char *addr_str, small_buf[100]; |
d5551862 | 11619 | struct breakpoint *tp; |
fd9b8c24 | 11620 | |
409873ef SS |
11621 | if (utp->at_string) |
11622 | addr_str = utp->at_string; | |
11623 | else | |
11624 | { | |
11625 | /* In the absence of a source location, fall back to raw | |
11626 | address. Since there is no way to confirm that the address | |
11627 | means the same thing as when the trace was started, warn the | |
11628 | user. */ | |
3e43a32a MS |
11629 | warning (_("Uploaded tracepoint %d has no " |
11630 | "source location, using raw address"), | |
409873ef SS |
11631 | utp->number); |
11632 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11633 | addr_str = small_buf; | |
11634 | } | |
11635 | ||
11636 | /* There's not much we can do with a sequence of bytecodes. */ | |
11637 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
11638 | warning (_("Uploaded tracepoint %d condition " |
11639 | "has no source form, ignoring it"), | |
409873ef | 11640 | utp->number); |
d5551862 | 11641 | |
8cdf0e15 | 11642 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11643 | addr_str, |
11644 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11645 | 0 /* tempflag */, |
0fb4aa4b | 11646 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11647 | 0 /* Ignore count */, |
11648 | pending_break_support, | |
11649 | NULL, | |
11650 | 0 /* from_tty */, | |
84f4c1fe PM |
11651 | utp->enabled /* enabled */, |
11652 | 0 /* internal */)) | |
fd9b8c24 PA |
11653 | return NULL; |
11654 | ||
00bf0b85 SS |
11655 | set_tracepoint_count (breakpoint_count); |
11656 | ||
409873ef | 11657 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11658 | tp = get_tracepoint (tracepoint_count); |
11659 | gdb_assert (tp != NULL); | |
d5551862 | 11660 | |
00bf0b85 SS |
11661 | if (utp->pass > 0) |
11662 | { | |
409873ef | 11663 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11664 | |
409873ef | 11665 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11666 | } |
11667 | ||
409873ef SS |
11668 | /* If we have uploaded versions of the original commands, set up a |
11669 | special-purpose "reader" function and call the usual command line | |
11670 | reader, then pass the result to the breakpoint command-setting | |
11671 | function. */ | |
3149d8c1 | 11672 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11673 | { |
409873ef | 11674 | struct command_line *cmd_list; |
00bf0b85 | 11675 | |
409873ef | 11676 | this_utp = utp; |
3149d8c1 | 11677 | next_cmd = 0; |
d5551862 | 11678 | |
409873ef SS |
11679 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
11680 | ||
11681 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 11682 | } |
3149d8c1 SS |
11683 | else if (!VEC_empty (char_ptr, utp->actions) |
11684 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
11685 | warning (_("Uploaded tracepoint %d actions " |
11686 | "have no source form, ignoring them"), | |
409873ef | 11687 | utp->number); |
00bf0b85 SS |
11688 | |
11689 | return tp; | |
11690 | } | |
11691 | ||
1042e4c0 SS |
11692 | /* Print information on tracepoint number TPNUM_EXP, or all if |
11693 | omitted. */ | |
11694 | ||
11695 | static void | |
e5a67952 | 11696 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 11697 | { |
e5a67952 | 11698 | int num_printed; |
1042e4c0 | 11699 | |
e5a67952 | 11700 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
11701 | |
11702 | if (num_printed == 0) | |
1042e4c0 | 11703 | { |
e5a67952 | 11704 | if (args == NULL || *args == '\0') |
d77f58be SS |
11705 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
11706 | else | |
e5a67952 | 11707 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 11708 | } |
ad443146 SS |
11709 | |
11710 | default_collect_info (); | |
1042e4c0 SS |
11711 | } |
11712 | ||
4a64f543 | 11713 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
11714 | Not supported by all targets. */ |
11715 | static void | |
11716 | enable_trace_command (char *args, int from_tty) | |
11717 | { | |
11718 | enable_command (args, from_tty); | |
11719 | } | |
11720 | ||
4a64f543 | 11721 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
11722 | Not supported by all targets. */ |
11723 | static void | |
11724 | disable_trace_command (char *args, int from_tty) | |
11725 | { | |
11726 | disable_command (args, from_tty); | |
11727 | } | |
11728 | ||
4a64f543 | 11729 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
11730 | static void |
11731 | delete_trace_command (char *arg, int from_tty) | |
11732 | { | |
35df4500 | 11733 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
11734 | |
11735 | dont_repeat (); | |
11736 | ||
11737 | if (arg == 0) | |
11738 | { | |
11739 | int breaks_to_delete = 0; | |
11740 | ||
11741 | /* Delete all breakpoints if no argument. | |
11742 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
11743 | have to be deleted with an explicit breakpoint number |
11744 | argument. */ | |
1042e4c0 SS |
11745 | ALL_TRACEPOINTS (b) |
11746 | { | |
11747 | if (b->number >= 0) | |
11748 | { | |
11749 | breaks_to_delete = 1; | |
11750 | break; | |
11751 | } | |
11752 | } | |
11753 | ||
11754 | /* Ask user only if there are some breakpoints to delete. */ | |
11755 | if (!from_tty | |
11756 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
11757 | { | |
35df4500 | 11758 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
1042e4c0 | 11759 | { |
d77f58be | 11760 | if (is_tracepoint (b) |
059fb39f | 11761 | && b->number >= 0) |
1042e4c0 SS |
11762 | delete_breakpoint (b); |
11763 | } | |
11764 | } | |
11765 | } | |
11766 | else | |
95a42b64 | 11767 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
11768 | } |
11769 | ||
197f0a60 TT |
11770 | /* Helper function for trace_pass_command. */ |
11771 | ||
11772 | static void | |
11773 | trace_pass_set_count (struct breakpoint *bp, int count, int from_tty) | |
11774 | { | |
11775 | bp->pass_count = count; | |
11776 | observer_notify_tracepoint_modified (bp->number); | |
11777 | if (from_tty) | |
11778 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
11779 | bp->number, count); | |
11780 | } | |
11781 | ||
1042e4c0 SS |
11782 | /* Set passcount for tracepoint. |
11783 | ||
11784 | First command argument is passcount, second is tracepoint number. | |
11785 | If tracepoint number omitted, apply to most recently defined. | |
11786 | Also accepts special argument "all". */ | |
11787 | ||
11788 | static void | |
11789 | trace_pass_command (char *args, int from_tty) | |
11790 | { | |
197f0a60 | 11791 | struct breakpoint *t1; |
1042e4c0 | 11792 | unsigned int count; |
1042e4c0 SS |
11793 | |
11794 | if (args == 0 || *args == 0) | |
3e43a32a MS |
11795 | error (_("passcount command requires an " |
11796 | "argument (count + optional TP num)")); | |
1042e4c0 | 11797 | |
4a64f543 | 11798 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
11799 | |
11800 | while (*args && isspace ((int) *args)) | |
11801 | args++; | |
11802 | ||
11803 | if (*args && strncasecmp (args, "all", 3) == 0) | |
11804 | { | |
11805 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
11806 | if (*args) |
11807 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 11808 | |
197f0a60 TT |
11809 | ALL_TRACEPOINTS (t1) |
11810 | { | |
11811 | trace_pass_set_count (t1, count, from_tty); | |
11812 | } | |
11813 | } | |
11814 | else if (*args == '\0') | |
1042e4c0 | 11815 | { |
197f0a60 | 11816 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 11817 | if (t1) |
197f0a60 TT |
11818 | trace_pass_set_count (t1, count, from_tty); |
11819 | } | |
11820 | else | |
11821 | { | |
11822 | struct get_number_or_range_state state; | |
11823 | ||
11824 | init_number_or_range (&state, args); | |
11825 | while (!state.finished) | |
1042e4c0 | 11826 | { |
197f0a60 TT |
11827 | t1 = get_tracepoint_by_number (&args, &state, 1); |
11828 | if (t1) | |
11829 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
11830 | } |
11831 | } | |
1042e4c0 SS |
11832 | } |
11833 | ||
11834 | struct breakpoint * | |
11835 | get_tracepoint (int num) | |
11836 | { | |
11837 | struct breakpoint *t; | |
11838 | ||
11839 | ALL_TRACEPOINTS (t) | |
11840 | if (t->number == num) | |
11841 | return t; | |
11842 | ||
11843 | return NULL; | |
11844 | } | |
11845 | ||
d5551862 SS |
11846 | /* Find the tracepoint with the given target-side number (which may be |
11847 | different from the tracepoint number after disconnecting and | |
11848 | reconnecting). */ | |
11849 | ||
11850 | struct breakpoint * | |
11851 | get_tracepoint_by_number_on_target (int num) | |
11852 | { | |
11853 | struct breakpoint *t; | |
11854 | ||
11855 | ALL_TRACEPOINTS (t) | |
11856 | if (t->number_on_target == num) | |
11857 | return t; | |
11858 | ||
11859 | return NULL; | |
11860 | } | |
11861 | ||
1042e4c0 | 11862 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
11863 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
11864 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 SS |
11865 | recent tracepoint (tracepoint_count) is returned. */ |
11866 | struct breakpoint * | |
197f0a60 TT |
11867 | get_tracepoint_by_number (char **arg, |
11868 | struct get_number_or_range_state *state, | |
11869 | int optional_p) | |
1042e4c0 SS |
11870 | { |
11871 | extern int tracepoint_count; | |
11872 | struct breakpoint *t; | |
11873 | int tpnum; | |
11874 | char *instring = arg == NULL ? NULL : *arg; | |
11875 | ||
197f0a60 TT |
11876 | if (state) |
11877 | { | |
11878 | gdb_assert (!state->finished); | |
11879 | tpnum = get_number_or_range (state); | |
11880 | } | |
11881 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
11882 | { |
11883 | if (optional_p) | |
11884 | tpnum = tracepoint_count; | |
11885 | else | |
11886 | error_no_arg (_("tracepoint number")); | |
11887 | } | |
11888 | else | |
197f0a60 | 11889 | tpnum = get_number (arg); |
1042e4c0 SS |
11890 | |
11891 | if (tpnum <= 0) | |
11892 | { | |
11893 | if (instring && *instring) | |
11894 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
11895 | instring); | |
11896 | else | |
3e43a32a MS |
11897 | printf_filtered (_("Tracepoint argument missing " |
11898 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
11899 | return NULL; |
11900 | } | |
11901 | ||
11902 | ALL_TRACEPOINTS (t) | |
11903 | if (t->number == tpnum) | |
11904 | { | |
11905 | return t; | |
11906 | } | |
11907 | ||
1042e4c0 SS |
11908 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
11909 | return NULL; | |
11910 | } | |
11911 | ||
6149aea9 PA |
11912 | /* Save information on user settable breakpoints (watchpoints, etc) to |
11913 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
11914 | on each breakpoint and only include the ones for which it returns | |
11915 | non-zero. */ | |
11916 | ||
1042e4c0 | 11917 | static void |
6149aea9 PA |
11918 | save_breakpoints (char *filename, int from_tty, |
11919 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
11920 | { |
11921 | struct breakpoint *tp; | |
6149aea9 | 11922 | int any = 0; |
a7bdde9e | 11923 | char *pathname; |
1042e4c0 | 11924 | struct cleanup *cleanup; |
a7bdde9e | 11925 | struct ui_file *fp; |
6149aea9 | 11926 | int extra_trace_bits = 0; |
1042e4c0 | 11927 | |
6149aea9 PA |
11928 | if (filename == 0 || *filename == 0) |
11929 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
11930 | |
11931 | /* See if we have anything to save. */ | |
6149aea9 | 11932 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11933 | { |
6149aea9 | 11934 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 11935 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
11936 | continue; |
11937 | ||
11938 | /* If we have a filter, only save the breakpoints it accepts. */ | |
11939 | if (filter && !filter (tp)) | |
11940 | continue; | |
11941 | ||
11942 | any = 1; | |
11943 | ||
11944 | if (is_tracepoint (tp)) | |
11945 | { | |
11946 | extra_trace_bits = 1; | |
11947 | ||
11948 | /* We can stop searching. */ | |
11949 | break; | |
11950 | } | |
1042e4c0 | 11951 | } |
6149aea9 PA |
11952 | |
11953 | if (!any) | |
1042e4c0 | 11954 | { |
6149aea9 | 11955 | warning (_("Nothing to save.")); |
1042e4c0 SS |
11956 | return; |
11957 | } | |
11958 | ||
6149aea9 | 11959 | pathname = tilde_expand (filename); |
1042e4c0 | 11960 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11961 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11962 | if (!fp) |
6149aea9 PA |
11963 | error (_("Unable to open file '%s' for saving (%s)"), |
11964 | filename, safe_strerror (errno)); | |
a7bdde9e | 11965 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11966 | |
6149aea9 PA |
11967 | if (extra_trace_bits) |
11968 | save_trace_state_variables (fp); | |
8bf6485c | 11969 | |
6149aea9 | 11970 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11971 | { |
6149aea9 | 11972 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 11973 | if (!user_breakpoint_p (tp)) |
6149aea9 | 11974 | continue; |
8bf6485c | 11975 | |
6149aea9 PA |
11976 | /* If we have a filter, only save the breakpoints it accepts. */ |
11977 | if (filter && !filter (tp)) | |
11978 | continue; | |
11979 | ||
11980 | if (tp->ops != NULL) | |
11981 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11982 | else |
11983 | { | |
6149aea9 PA |
11984 | if (tp->type == bp_fast_tracepoint) |
11985 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
11986 | if (tp->type == bp_static_tracepoint) |
11987 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
11988 | else if (tp->type == bp_tracepoint) |
11989 | fprintf_unfiltered (fp, "trace"); | |
11990 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11991 | fprintf_unfiltered (fp, "tbreak"); | |
11992 | else if (tp->type == bp_breakpoint) | |
11993 | fprintf_unfiltered (fp, "break"); | |
11994 | else if (tp->type == bp_hardware_breakpoint | |
11995 | && tp->disposition == disp_del) | |
11996 | fprintf_unfiltered (fp, "thbreak"); | |
11997 | else if (tp->type == bp_hardware_breakpoint) | |
11998 | fprintf_unfiltered (fp, "hbreak"); | |
11999 | else if (tp->type == bp_watchpoint) | |
12000 | fprintf_unfiltered (fp, "watch"); | |
12001 | else if (tp->type == bp_hardware_watchpoint) | |
12002 | fprintf_unfiltered (fp, "watch"); | |
12003 | else if (tp->type == bp_read_watchpoint) | |
12004 | fprintf_unfiltered (fp, "rwatch"); | |
12005 | else if (tp->type == bp_access_watchpoint) | |
12006 | fprintf_unfiltered (fp, "awatch"); | |
12007 | else | |
12008 | internal_error (__FILE__, __LINE__, | |
12009 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12010 | ||
12011 | if (tp->exp_string) | |
12012 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
12013 | else if (tp->addr_string) | |
12014 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
12015 | else | |
12016 | { | |
12017 | char tmp[40]; | |
12018 | ||
12019 | sprintf_vma (tmp, tp->loc->address); | |
12020 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
12021 | } | |
1042e4c0 SS |
12022 | } |
12023 | ||
6149aea9 PA |
12024 | if (tp->thread != -1) |
12025 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
12026 | ||
12027 | if (tp->task != 0) | |
12028 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
12029 | |
12030 | fprintf_unfiltered (fp, "\n"); | |
12031 | ||
6149aea9 PA |
12032 | /* Note, we can't rely on tp->number for anything, as we can't |
12033 | assume the recreated breakpoint numbers will match. Use $bpnum | |
12034 | instead. */ | |
12035 | ||
12036 | if (tp->cond_string) | |
12037 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
12038 | ||
12039 | if (tp->ignore_count) | |
12040 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
12041 | ||
1042e4c0 | 12042 | if (tp->pass_count) |
a7bdde9e | 12043 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 12044 | |
a7bdde9e | 12045 | if (tp->commands) |
1042e4c0 | 12046 | { |
a7bdde9e VP |
12047 | volatile struct gdb_exception ex; |
12048 | ||
6149aea9 | 12049 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
12050 | |
12051 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 12052 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 12053 | { |
9add0f1b | 12054 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
12055 | } |
12056 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 12057 | |
a7bdde9e VP |
12058 | if (ex.reason < 0) |
12059 | throw_exception (ex); | |
1042e4c0 | 12060 | |
a7bdde9e | 12061 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 12062 | } |
6149aea9 PA |
12063 | |
12064 | if (tp->enable_state == bp_disabled) | |
12065 | fprintf_unfiltered (fp, "disable\n"); | |
12066 | ||
12067 | /* If this is a multi-location breakpoint, check if the locations | |
12068 | should be individually disabled. Watchpoint locations are | |
12069 | special, and not user visible. */ | |
12070 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
12071 | { | |
12072 | struct bp_location *loc; | |
12073 | int n = 1; | |
12074 | ||
12075 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
12076 | if (!loc->enabled) | |
12077 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
12078 | } | |
1042e4c0 | 12079 | } |
8bf6485c | 12080 | |
6149aea9 | 12081 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
12082 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
12083 | ||
1042e4c0 SS |
12084 | do_cleanups (cleanup); |
12085 | if (from_tty) | |
6149aea9 PA |
12086 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
12087 | } | |
12088 | ||
12089 | /* The `save breakpoints' command. */ | |
12090 | ||
12091 | static void | |
12092 | save_breakpoints_command (char *args, int from_tty) | |
12093 | { | |
12094 | save_breakpoints (args, from_tty, NULL); | |
12095 | } | |
12096 | ||
12097 | /* The `save tracepoints' command. */ | |
12098 | ||
12099 | static void | |
12100 | save_tracepoints_command (char *args, int from_tty) | |
12101 | { | |
12102 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
12103 | } |
12104 | ||
12105 | /* Create a vector of all tracepoints. */ | |
12106 | ||
12107 | VEC(breakpoint_p) * | |
eeae04df | 12108 | all_tracepoints (void) |
1042e4c0 SS |
12109 | { |
12110 | VEC(breakpoint_p) *tp_vec = 0; | |
12111 | struct breakpoint *tp; | |
12112 | ||
12113 | ALL_TRACEPOINTS (tp) | |
12114 | { | |
12115 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
12116 | } | |
12117 | ||
12118 | return tp_vec; | |
12119 | } | |
12120 | ||
c906108c | 12121 | \f |
4a64f543 MS |
12122 | /* This help string is used for the break, hbreak, tbreak and thbreak |
12123 | commands. It is defined as a macro to prevent duplication. | |
12124 | COMMAND should be a string constant containing the name of the | |
12125 | command. */ | |
31e2b00f AS |
12126 | #define BREAK_ARGS_HELP(command) \ |
12127 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
12128 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
12129 | If a line number is specified, break at start of code for that line.\n\ | |
12130 | If a function is specified, break at start of code for that function.\n\ | |
12131 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
12132 | With no LOCATION, uses current execution address of the selected\n\ |
12133 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
12134 | \n\ |
12135 | THREADNUM is the number from \"info threads\".\n\ | |
12136 | CONDITION is a boolean expression.\n\ | |
12137 | \n\ | |
d41c0fc8 PA |
12138 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
12139 | conditions are different.\n\ | |
31e2b00f AS |
12140 | \n\ |
12141 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
12142 | ||
44feb3ce TT |
12143 | /* List of subcommands for "catch". */ |
12144 | static struct cmd_list_element *catch_cmdlist; | |
12145 | ||
12146 | /* List of subcommands for "tcatch". */ | |
12147 | static struct cmd_list_element *tcatch_cmdlist; | |
12148 | ||
12149 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
12150 | lists, and pass some additional user data to the command function. */ | |
12151 | static void | |
12152 | add_catch_command (char *name, char *docstring, | |
12153 | void (*sfunc) (char *args, int from_tty, | |
12154 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
12155 | char **(*completer) (struct cmd_list_element *cmd, |
12156 | char *text, char *word), | |
44feb3ce TT |
12157 | void *user_data_catch, |
12158 | void *user_data_tcatch) | |
12159 | { | |
12160 | struct cmd_list_element *command; | |
12161 | ||
12162 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12163 | &catch_cmdlist); | |
12164 | set_cmd_sfunc (command, sfunc); | |
12165 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 12166 | set_cmd_completer (command, completer); |
44feb3ce TT |
12167 | |
12168 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
12169 | &tcatch_cmdlist); | |
12170 | set_cmd_sfunc (command, sfunc); | |
12171 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 12172 | set_cmd_completer (command, completer); |
44feb3ce TT |
12173 | } |
12174 | ||
6c95b8df | 12175 | static void |
a79b8f6e | 12176 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 12177 | { |
6c95b8df PA |
12178 | inf->total_syscalls_count = 0; |
12179 | inf->any_syscall_count = 0; | |
12180 | VEC_free (int, inf->syscalls_counts); | |
12181 | } | |
12182 | ||
6149aea9 PA |
12183 | static void |
12184 | save_command (char *arg, int from_tty) | |
12185 | { | |
3e43a32a MS |
12186 | printf_unfiltered (_("\"save\" must be followed by " |
12187 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
12188 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
12189 | } | |
12190 | ||
84f4c1fe PM |
12191 | struct breakpoint * |
12192 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
12193 | void *data) | |
12194 | { | |
35df4500 | 12195 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 12196 | |
35df4500 | 12197 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
12198 | { |
12199 | if ((*callback) (b, data)) | |
12200 | return b; | |
12201 | } | |
12202 | ||
12203 | return NULL; | |
12204 | } | |
12205 | ||
c906108c | 12206 | void |
fba45db2 | 12207 | _initialize_breakpoint (void) |
c906108c SS |
12208 | { |
12209 | struct cmd_list_element *c; | |
12210 | ||
84acb35a | 12211 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 12212 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 12213 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 12214 | |
17450429 PP |
12215 | breakpoint_objfile_key = register_objfile_data (); |
12216 | ||
c906108c SS |
12217 | breakpoint_chain = 0; |
12218 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
12219 | before a breakpoint is set. */ | |
12220 | breakpoint_count = 0; | |
12221 | ||
1042e4c0 SS |
12222 | tracepoint_count = 0; |
12223 | ||
1bedd215 AC |
12224 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
12225 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
12226 | Usage is `ignore N COUNT'.")); | |
c906108c | 12227 | if (xdb_commands) |
c5aa993b | 12228 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 12229 | |
1bedd215 AC |
12230 | add_com ("commands", class_breakpoint, commands_command, _("\ |
12231 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
12232 | Give breakpoint number as argument after \"commands\".\n\ |
12233 | With no argument, the targeted breakpoint is the last one set.\n\ | |
12234 | The commands themselves follow starting on the next line.\n\ | |
12235 | Type a line containing \"end\" to indicate the end of them.\n\ | |
12236 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 12237 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 12238 | |
1bedd215 AC |
12239 | add_com ("condition", class_breakpoint, condition_command, _("\ |
12240 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 12241 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 12242 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 12243 | |
1bedd215 | 12244 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 12245 | Set a temporary breakpoint.\n\ |
c906108c SS |
12246 | Like \"break\" except the breakpoint is only temporary,\n\ |
12247 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
12248 | by using \"enable delete\" on the breakpoint number.\n\ |
12249 | \n" | |
12250 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 12251 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12252 | |
1bedd215 | 12253 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 12254 | Set a hardware assisted breakpoint.\n\ |
c906108c | 12255 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
12256 | some target hardware may not have this support.\n\ |
12257 | \n" | |
12258 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 12259 | set_cmd_completer (c, location_completer); |
c906108c | 12260 | |
1bedd215 | 12261 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 12262 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 12263 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
12264 | so it will be deleted when hit.\n\ |
12265 | \n" | |
12266 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 12267 | set_cmd_completer (c, location_completer); |
c906108c | 12268 | |
1bedd215 AC |
12269 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
12270 | Enable some breakpoints.\n\ | |
c906108c SS |
12271 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12272 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12273 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12274 | With a subcommand you can enable temporarily."), |
c906108c SS |
12275 | &enablelist, "enable ", 1, &cmdlist); |
12276 | if (xdb_commands) | |
1bedd215 AC |
12277 | add_com ("ab", class_breakpoint, enable_command, _("\ |
12278 | Enable some breakpoints.\n\ | |
c906108c SS |
12279 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12280 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
12281 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12282 | With a subcommand you can enable temporarily.")); |
c906108c SS |
12283 | |
12284 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
12285 | ||
84951ab5 | 12286 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 12287 | Enable some breakpoints.\n\ |
c906108c SS |
12288 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
12289 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 12290 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 12291 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 12292 | |
1a966eab AC |
12293 | add_cmd ("once", no_class, enable_once_command, _("\ |
12294 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12295 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12296 | &enablebreaklist); |
12297 | ||
1a966eab AC |
12298 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12299 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12300 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12301 | &enablebreaklist); |
12302 | ||
1a966eab AC |
12303 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
12304 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
12305 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
12306 | &enablelist); |
12307 | ||
1a966eab AC |
12308 | add_cmd ("once", no_class, enable_once_command, _("\ |
12309 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
12310 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
12311 | &enablelist); |
12312 | ||
1bedd215 AC |
12313 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
12314 | Disable some breakpoints.\n\ | |
c906108c SS |
12315 | Arguments are breakpoint numbers with spaces in between.\n\ |
12316 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12317 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
12318 | &disablelist, "disable ", 1, &cmdlist); |
12319 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
12320 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
12321 | if (xdb_commands) | |
1bedd215 AC |
12322 | add_com ("sb", class_breakpoint, disable_command, _("\ |
12323 | Disable some breakpoints.\n\ | |
c906108c SS |
12324 | Arguments are breakpoint numbers with spaces in between.\n\ |
12325 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 12326 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 12327 | |
1a966eab AC |
12328 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
12329 | Disable some breakpoints.\n\ | |
c906108c SS |
12330 | Arguments are breakpoint numbers with spaces in between.\n\ |
12331 | To disable all breakpoints, give no argument.\n\ | |
12332 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 12333 | This command may be abbreviated \"disable\"."), |
c906108c SS |
12334 | &disablelist); |
12335 | ||
1bedd215 AC |
12336 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
12337 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12338 | Arguments are breakpoint numbers with spaces in between.\n\ |
12339 | To delete all breakpoints, give no argument.\n\ | |
12340 | \n\ | |
12341 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 12342 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
12343 | &deletelist, "delete ", 1, &cmdlist); |
12344 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 12345 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 12346 | if (xdb_commands) |
1bedd215 AC |
12347 | add_com ("db", class_breakpoint, delete_command, _("\ |
12348 | Delete some breakpoints.\n\ | |
c906108c | 12349 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 12350 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12351 | |
1a966eab AC |
12352 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12353 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12354 | Arguments are breakpoint numbers with spaces in between.\n\ |
12355 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12356 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12357 | &deletelist); |
12358 | ||
1bedd215 AC |
12359 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12360 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12361 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12362 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12363 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12364 | If an address is specified, breakpoints at that address are cleared.\n\ |
12365 | \n\ | |
12366 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12367 | is executing in.\n\ |
12368 | \n\ | |
1bedd215 | 12369 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12370 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12371 | |
1bedd215 | 12372 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12373 | Set breakpoint at specified line or function.\n" |
12374 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12375 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12376 | |
c906108c SS |
12377 | add_com_alias ("b", "break", class_run, 1); |
12378 | add_com_alias ("br", "break", class_run, 1); | |
12379 | add_com_alias ("bre", "break", class_run, 1); | |
12380 | add_com_alias ("brea", "break", class_run, 1); | |
12381 | ||
7681d515 PM |
12382 | if (xdb_commands) |
12383 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12384 | |
12385 | if (dbx_commands) | |
12386 | { | |
1bedd215 AC |
12387 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12388 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12389 | &stoplist, "stop ", 1, &cmdlist); |
12390 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12391 | _("Break in function or address."), &stoplist); |
c5aa993b | 12392 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12393 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12394 | add_com ("status", class_info, breakpoints_info, _("\ |
12395 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12396 | The \"Type\" column indicates one of:\n\ |
12397 | \tbreakpoint - normal breakpoint\n\ | |
12398 | \twatchpoint - watchpoint\n\ | |
12399 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12400 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12401 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12402 | address and file/line number respectively.\n\ |
12403 | \n\ | |
12404 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12405 | are set to the address of the last breakpoint listed unless the command\n\ |
12406 | is prefixed with \"server \".\n\n\ | |
c906108c | 12407 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12408 | breakpoint set.")); |
c906108c SS |
12409 | } |
12410 | ||
1bedd215 | 12411 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 12412 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
12413 | The \"Type\" column indicates one of:\n\ |
12414 | \tbreakpoint - normal breakpoint\n\ | |
12415 | \twatchpoint - watchpoint\n\ | |
12416 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12417 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12418 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12419 | address and file/line number respectively.\n\ |
12420 | \n\ | |
12421 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12422 | are set to the address of the last breakpoint listed unless the command\n\ |
12423 | is prefixed with \"server \".\n\n\ | |
c906108c | 12424 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12425 | breakpoint set.")); |
c906108c | 12426 | |
6b04bdb7 MS |
12427 | add_info_alias ("b", "breakpoints", 1); |
12428 | ||
c906108c | 12429 | if (xdb_commands) |
1bedd215 AC |
12430 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12431 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12432 | The \"Type\" column indicates one of:\n\ |
12433 | \tbreakpoint - normal breakpoint\n\ | |
12434 | \twatchpoint - watchpoint\n\ | |
12435 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12436 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12437 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12438 | address and file/line number respectively.\n\ |
12439 | \n\ | |
12440 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12441 | are set to the address of the last breakpoint listed unless the command\n\ |
12442 | is prefixed with \"server \".\n\n\ | |
c906108c | 12443 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12444 | breakpoint set.")); |
c906108c | 12445 | |
1a966eab AC |
12446 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12447 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12448 | The \"Type\" column indicates one of:\n\ |
12449 | \tbreakpoint - normal breakpoint\n\ | |
12450 | \twatchpoint - watchpoint\n\ | |
12451 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12452 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12453 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12454 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12455 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12456 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12457 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12458 | address and file/line number respectively.\n\ |
12459 | \n\ | |
12460 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12461 | are set to the address of the last breakpoint listed unless the command\n\ |
12462 | is prefixed with \"server \".\n\n\ | |
c906108c | 12463 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12464 | breakpoint set."), |
c906108c SS |
12465 | &maintenanceinfolist); |
12466 | ||
44feb3ce TT |
12467 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12468 | Set catchpoints to catch events."), | |
12469 | &catch_cmdlist, "catch ", | |
12470 | 0/*allow-unknown*/, &cmdlist); | |
12471 | ||
12472 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12473 | Set temporary catchpoints to catch events."), | |
12474 | &tcatch_cmdlist, "tcatch ", | |
12475 | 0/*allow-unknown*/, &cmdlist); | |
12476 | ||
12477 | /* Add catch and tcatch sub-commands. */ | |
12478 | add_catch_command ("catch", _("\ | |
12479 | Catch an exception, when caught.\n\ | |
12480 | With an argument, catch only exceptions with the given name."), | |
12481 | catch_catch_command, | |
a96d9b2e | 12482 | NULL, |
44feb3ce TT |
12483 | CATCH_PERMANENT, |
12484 | CATCH_TEMPORARY); | |
12485 | add_catch_command ("throw", _("\ | |
12486 | Catch an exception, when thrown.\n\ | |
12487 | With an argument, catch only exceptions with the given name."), | |
12488 | catch_throw_command, | |
a96d9b2e | 12489 | NULL, |
44feb3ce TT |
12490 | CATCH_PERMANENT, |
12491 | CATCH_TEMPORARY); | |
12492 | add_catch_command ("fork", _("Catch calls to fork."), | |
12493 | catch_fork_command_1, | |
a96d9b2e | 12494 | NULL, |
44feb3ce TT |
12495 | (void *) (uintptr_t) catch_fork_permanent, |
12496 | (void *) (uintptr_t) catch_fork_temporary); | |
12497 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12498 | catch_fork_command_1, | |
a96d9b2e | 12499 | NULL, |
44feb3ce TT |
12500 | (void *) (uintptr_t) catch_vfork_permanent, |
12501 | (void *) (uintptr_t) catch_vfork_temporary); | |
12502 | add_catch_command ("exec", _("Catch calls to exec."), | |
12503 | catch_exec_command_1, | |
a96d9b2e SDJ |
12504 | NULL, |
12505 | CATCH_PERMANENT, | |
12506 | CATCH_TEMPORARY); | |
12507 | add_catch_command ("syscall", _("\ | |
12508 | Catch system calls by their names and/or numbers.\n\ | |
12509 | Arguments say which system calls to catch. If no arguments\n\ | |
12510 | are given, every system call will be caught.\n\ | |
12511 | Arguments, if given, should be one or more system call names\n\ | |
12512 | (if your system supports that), or system call numbers."), | |
12513 | catch_syscall_command_1, | |
12514 | catch_syscall_completer, | |
44feb3ce TT |
12515 | CATCH_PERMANENT, |
12516 | CATCH_TEMPORARY); | |
44feb3ce TT |
12517 | add_catch_command ("exception", _("\ |
12518 | Catch Ada exceptions, when raised.\n\ | |
12519 | With an argument, catch only exceptions with the given name."), | |
12520 | catch_ada_exception_command, | |
a96d9b2e | 12521 | NULL, |
44feb3ce TT |
12522 | CATCH_PERMANENT, |
12523 | CATCH_TEMPORARY); | |
12524 | add_catch_command ("assert", _("\ | |
12525 | Catch failed Ada assertions, when raised.\n\ | |
12526 | With an argument, catch only exceptions with the given name."), | |
12527 | catch_assert_command, | |
a96d9b2e | 12528 | NULL, |
44feb3ce TT |
12529 | CATCH_PERMANENT, |
12530 | CATCH_TEMPORARY); | |
c5aa993b | 12531 | |
1bedd215 AC |
12532 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12533 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12534 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12535 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12536 | an expression changes.\n\ |
12537 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12538 | the memory to which it refers.")); | |
65d12d83 | 12539 | set_cmd_completer (c, expression_completer); |
c906108c | 12540 | |
1bedd215 AC |
12541 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12542 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12543 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12544 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12545 | an expression is read.\n\ |
12546 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12547 | the memory to which it refers.")); | |
65d12d83 | 12548 | set_cmd_completer (c, expression_completer); |
c906108c | 12549 | |
1bedd215 AC |
12550 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12551 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12552 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12553 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12554 | an expression is either read or written.\n\ |
12555 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12556 | the memory to which it refers.")); | |
65d12d83 | 12557 | set_cmd_completer (c, expression_completer); |
c906108c | 12558 | |
d77f58be | 12559 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 12560 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 12561 | |
920d2a44 AC |
12562 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12563 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12564 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12565 | &can_use_hw_watchpoints, _("\ | |
12566 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12567 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12568 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12569 | such is available. (However, any hardware watchpoints that were\n\ | |
12570 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12571 | hardware.)"), |
12572 | NULL, | |
920d2a44 | 12573 | show_can_use_hw_watchpoints, |
85c07804 | 12574 | &setlist, &showlist); |
c906108c SS |
12575 | |
12576 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12577 | |
1042e4c0 SS |
12578 | /* Tracepoint manipulation commands. */ |
12579 | ||
12580 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12581 | Set a tracepoint at specified line or function.\n\ | |
12582 | \n" | |
12583 | BREAK_ARGS_HELP ("trace") "\n\ | |
12584 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12585 | set_cmd_completer (c, location_completer); | |
12586 | ||
12587 | add_com_alias ("tp", "trace", class_alias, 0); | |
12588 | add_com_alias ("tr", "trace", class_alias, 1); | |
12589 | add_com_alias ("tra", "trace", class_alias, 1); | |
12590 | add_com_alias ("trac", "trace", class_alias, 1); | |
12591 | ||
7a697b8d SS |
12592 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12593 | Set a fast tracepoint at specified line or function.\n\ | |
12594 | \n" | |
12595 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12596 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12597 | set_cmd_completer (c, location_completer); | |
12598 | ||
0fb4aa4b PA |
12599 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12600 | Set a static tracepoint at specified line, function or marker.\n\ | |
12601 | \n\ | |
12602 | strace [LOCATION] [if CONDITION]\n\ | |
12603 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12604 | or -m MARKER_ID.\n\ | |
12605 | If a line number is specified, probe the marker at start of code\n\ | |
12606 | for that line. If a function is specified, probe the marker at start\n\ | |
12607 | of code for that function. If an address is specified, probe the marker\n\ | |
12608 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12609 | with that name. With no LOCATION, uses current execution address of\n\ | |
12610 | the selected stack frame.\n\ | |
12611 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12612 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12613 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12614 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12615 | \n\ | |
12616 | CONDITION is a boolean expression.\n\ | |
12617 | \n\ | |
d41c0fc8 PA |
12618 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12619 | conditions are different.\n\ | |
0fb4aa4b PA |
12620 | \n\ |
12621 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12622 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12623 | set_cmd_completer (c, location_completer); | |
12624 | ||
1042e4c0 | 12625 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 12626 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
12627 | Convenience variable \"$tpnum\" contains the number of the\n\ |
12628 | last tracepoint set.")); | |
12629 | ||
12630 | add_info_alias ("tp", "tracepoints", 1); | |
12631 | ||
12632 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12633 | Delete specified tracepoints.\n\ | |
12634 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12635 | No argument means delete all tracepoints."), | |
12636 | &deletelist); | |
12637 | ||
12638 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12639 | Disable specified tracepoints.\n\ | |
12640 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12641 | No argument means disable all tracepoints."), | |
12642 | &disablelist); | |
12643 | deprecate_cmd (c, "disable"); | |
12644 | ||
12645 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12646 | Enable specified tracepoints.\n\ | |
12647 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12648 | No argument means enable all tracepoints."), | |
12649 | &enablelist); | |
12650 | deprecate_cmd (c, "enable"); | |
12651 | ||
12652 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12653 | Set the passcount for a tracepoint.\n\ | |
12654 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12655 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12656 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12657 | ||
6149aea9 PA |
12658 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12659 | _("Save breakpoint definitions as a script."), | |
12660 | &save_cmdlist, "save ", | |
12661 | 0/*allow-unknown*/, &cmdlist); | |
12662 | ||
12663 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12664 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12665 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12666 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12667 | session to restore them."), | |
12668 | &save_cmdlist); | |
12669 | set_cmd_completer (c, filename_completer); | |
12670 | ||
12671 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12672 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12673 | Use the 'source' command in another debug session to restore them."), |
12674 | &save_cmdlist); | |
1042e4c0 SS |
12675 | set_cmd_completer (c, filename_completer); |
12676 | ||
6149aea9 PA |
12677 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12678 | deprecate_cmd (c, "save tracepoints"); | |
12679 | ||
1bedd215 | 12680 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12681 | Breakpoint specific settings\n\ |
12682 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12683 | pending breakpoint behavior"), |
fa8d40ab JJ |
12684 | &breakpoint_set_cmdlist, "set breakpoint ", |
12685 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 12686 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12687 | Breakpoint specific settings\n\ |
12688 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12689 | pending breakpoint behavior"), |
fa8d40ab JJ |
12690 | &breakpoint_show_cmdlist, "show breakpoint ", |
12691 | 0/*allow-unknown*/, &showlist); | |
12692 | ||
7915a72c AC |
12693 | add_setshow_auto_boolean_cmd ("pending", no_class, |
12694 | &pending_break_support, _("\ | |
12695 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
12696 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
12697 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
12698 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
12699 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 12700 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 12701 | NULL, |
920d2a44 | 12702 | show_pending_break_support, |
6e1d7d6c AC |
12703 | &breakpoint_set_cmdlist, |
12704 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
12705 | |
12706 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
12707 | |
12708 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
12709 | &automatic_hardware_breakpoints, _("\ | |
12710 | Set automatic usage of hardware breakpoints."), _("\ | |
12711 | Show automatic usage of hardware breakpoints."), _("\ | |
12712 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
12713 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
12714 | a warning will be emitted for such breakpoints."), | |
12715 | NULL, | |
12716 | show_automatic_hardware_breakpoints, | |
12717 | &breakpoint_set_cmdlist, | |
12718 | &breakpoint_show_cmdlist); | |
74960c60 | 12719 | |
33e5cbd6 PA |
12720 | add_setshow_enum_cmd ("always-inserted", class_support, |
12721 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
12722 | Set mode for inserting breakpoints."), _("\ |
12723 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
12724 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
12725 | resumed, and removed when execution stops. When this mode is on,\n\ | |
12726 | breakpoints are inserted immediately and removed only when the user\n\ | |
12727 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
12728 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
12729 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
12730 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
12731 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
12732 | NULL, |
12733 | &show_always_inserted_mode, | |
12734 | &breakpoint_set_cmdlist, | |
12735 | &breakpoint_show_cmdlist); | |
765dc015 VP |
12736 | |
12737 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
12738 | |
12739 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 12740 | } |