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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
7b6bb8da | 5 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
65d79d4b | 64 | #include "parser-defs.h" |
c906108c | 65 | |
1042e4c0 SS |
66 | /* readline include files */ |
67 | #include "readline/readline.h" | |
68 | #include "readline/history.h" | |
69 | ||
70 | /* readline defines this. */ | |
71 | #undef savestring | |
72 | ||
034dad6f | 73 | #include "mi/mi-common.h" |
104c1213 | 74 | |
44feb3ce TT |
75 | /* Arguments to pass as context to some catch command handlers. */ |
76 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
77 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 78 | |
4a64f543 | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
a14ed312 | 97 | static void clear_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void catch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 102 | |
98deb0da | 103 | static void break_command_1 (char *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void mention (struct breakpoint *); |
c906108c | 106 | |
4a64f543 MS |
107 | /* This function is used in gdbtk sources and thus can not be made |
108 | static. */ | |
63c252f8 | 109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
76897487 KB |
113 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
114 | ||
a6d9a66e UW |
115 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
116 | CORE_ADDR bpaddr, | |
88f7da05 | 117 | enum bptype bptype); |
76897487 | 118 | |
6c95b8df PA |
119 | static void describe_other_breakpoints (struct gdbarch *, |
120 | struct program_space *, CORE_ADDR, | |
5af949e3 | 121 | struct obj_section *, int); |
c906108c | 122 | |
6c95b8df PA |
123 | static int breakpoint_address_match (struct address_space *aspace1, |
124 | CORE_ADDR addr1, | |
125 | struct address_space *aspace2, | |
126 | CORE_ADDR addr2); | |
127 | ||
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
a14ed312 | 131 | static void breakpoints_info (char *, int); |
c906108c | 132 | |
d77f58be SS |
133 | static void watchpoints_info (char *, int); |
134 | ||
135 | static int breakpoint_1 (int, int, int (*) (const struct breakpoint *)); | |
c906108c | 136 | |
4efb68b1 | 137 | static int breakpoint_cond_eval (void *); |
c906108c | 138 | |
4efb68b1 | 139 | static void cleanup_executing_breakpoints (void *); |
c906108c | 140 | |
a14ed312 | 141 | static void commands_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void condition_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static int get_number_trailer (char **, int); |
c906108c | 146 | |
c5aa993b JM |
147 | typedef enum |
148 | { | |
149 | mark_inserted, | |
150 | mark_uninserted | |
151 | } | |
152 | insertion_state_t; | |
c906108c | 153 | |
0bde7532 | 154 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 155 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 156 | |
a14ed312 | 157 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
158 | |
159 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 160 | |
4efb68b1 | 161 | static int watchpoint_check (void *); |
c906108c | 162 | |
a14ed312 | 163 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 168 | |
a14ed312 | 169 | static void hbreak_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void thbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 | 175 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 176 | |
a14ed312 | 177 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 182 | |
d85310f7 MS |
183 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
184 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 185 | |
a14ed312 | 186 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static void ep_skip_leading_whitespace (char **s); |
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 | { | |
271 | fprintf_filtered (file, _("\ | |
272 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
273 | value); | |
274 | } | |
275 | ||
fa8d40ab JJ |
276 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
277 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 278 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
279 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
280 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
281 | static void |
282 | show_pending_break_support (struct ui_file *file, int from_tty, | |
283 | struct cmd_list_element *c, | |
284 | const char *value) | |
285 | { | |
286 | fprintf_filtered (file, _("\ | |
287 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
288 | value); | |
289 | } | |
fa8d40ab | 290 | |
765dc015 | 291 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 292 | set with "break" but falling in read-only memory. |
765dc015 VP |
293 | If 0, gdb will warn about such breakpoints, but won't automatically |
294 | use hardware breakpoints. */ | |
295 | static int automatic_hardware_breakpoints; | |
296 | static void | |
297 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
298 | struct cmd_list_element *c, | |
299 | const char *value) | |
300 | { | |
301 | fprintf_filtered (file, _("\ | |
302 | Automatic usage of hardware breakpoints is %s.\n"), | |
303 | value); | |
304 | } | |
305 | ||
33e5cbd6 PA |
306 | /* If on, gdb will keep breakpoints inserted even as inferior is |
307 | stopped, and immediately insert any new breakpoints. If off, gdb | |
308 | will insert breakpoints into inferior only when resuming it, and | |
309 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
310 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
311 | ||
312 | static const char always_inserted_auto[] = "auto"; | |
313 | static const char always_inserted_on[] = "on"; | |
314 | static const char always_inserted_off[] = "off"; | |
315 | static const char *always_inserted_enums[] = { | |
316 | always_inserted_auto, | |
317 | always_inserted_off, | |
318 | always_inserted_on, | |
319 | NULL | |
320 | }; | |
321 | static const char *always_inserted_mode = always_inserted_auto; | |
322 | static void | |
74960c60 | 323 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 324 | struct cmd_list_element *c, const char *value) |
74960c60 | 325 | { |
33e5cbd6 PA |
326 | if (always_inserted_mode == always_inserted_auto) |
327 | fprintf_filtered (file, _("\ | |
328 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
329 | value, | |
330 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
331 | else | |
332 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
333 | } |
334 | ||
33e5cbd6 PA |
335 | int |
336 | breakpoints_always_inserted_mode (void) | |
337 | { | |
338 | return (always_inserted_mode == always_inserted_on | |
339 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
340 | } | |
765dc015 | 341 | |
a14ed312 | 342 | void _initialize_breakpoint (void); |
c906108c | 343 | |
c906108c SS |
344 | /* Are we executing breakpoint commands? */ |
345 | static int executing_breakpoint_commands; | |
346 | ||
c02f5703 MS |
347 | /* Are overlay event breakpoints enabled? */ |
348 | static int overlay_events_enabled; | |
349 | ||
c906108c | 350 | /* Walk the following statement or block through all breakpoints. |
4a64f543 MS |
351 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the |
352 | current breakpoint. */ | |
c906108c | 353 | |
5c44784c | 354 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 355 | |
5c44784c JM |
356 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
357 | for (B = breakpoint_chain; \ | |
358 | B ? (TMP=B->next, 1): 0; \ | |
359 | B = TMP) | |
c906108c | 360 | |
4a64f543 MS |
361 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
362 | not provided so update_global_location_list must not be called | |
363 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 364 | |
876fa593 JK |
365 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
366 | for (BP_TMP = bp_location; \ | |
367 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
368 | BP_TMP++) | |
7cc221ef | 369 | |
1042e4c0 SS |
370 | /* Iterator for tracepoints only. */ |
371 | ||
372 | #define ALL_TRACEPOINTS(B) \ | |
373 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 374 | if (is_tracepoint (B)) |
1042e4c0 | 375 | |
7cc221ef | 376 | /* Chains of all breakpoints defined. */ |
c906108c SS |
377 | |
378 | struct breakpoint *breakpoint_chain; | |
379 | ||
876fa593 JK |
380 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
381 | ||
382 | static struct bp_location **bp_location; | |
383 | ||
384 | /* Number of elements of BP_LOCATION. */ | |
385 | ||
386 | static unsigned bp_location_count; | |
387 | ||
4a64f543 MS |
388 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
389 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
390 | result from bp_location_has_shadow. You can use it for roughly | |
391 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
392 | an address you need to read. */ | |
876fa593 JK |
393 | |
394 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
395 | ||
4a64f543 MS |
396 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
397 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
398 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
399 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
400 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
401 | |
402 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 403 | |
4a64f543 MS |
404 | /* The locations that no longer correspond to any breakpoint, unlinked |
405 | from bp_location array, but for which a hit may still be reported | |
406 | by a target. */ | |
20874c92 VP |
407 | VEC(bp_location_p) *moribund_locations = NULL; |
408 | ||
c906108c SS |
409 | /* Number of last breakpoint made. */ |
410 | ||
95a42b64 TT |
411 | static int breakpoint_count; |
412 | ||
86b17b60 PA |
413 | /* The value of `breakpoint_count' before the last command that |
414 | created breakpoints. If the last (break-like) command created more | |
415 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
416 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
417 | static int prev_breakpoint_count; | |
c906108c | 418 | |
1042e4c0 SS |
419 | /* Number of last tracepoint made. */ |
420 | ||
95a42b64 | 421 | static int tracepoint_count; |
1042e4c0 | 422 | |
6149aea9 PA |
423 | static struct cmd_list_element *breakpoint_set_cmdlist; |
424 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 425 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 426 | |
468d015d JJ |
427 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
428 | static int | |
429 | breakpoint_enabled (struct breakpoint *b) | |
430 | { | |
0d381245 | 431 | return (b->enable_state == bp_enabled); |
468d015d JJ |
432 | } |
433 | ||
c906108c SS |
434 | /* Set breakpoint count to NUM. */ |
435 | ||
95a42b64 | 436 | static void |
fba45db2 | 437 | set_breakpoint_count (int num) |
c906108c | 438 | { |
86b17b60 | 439 | prev_breakpoint_count = breakpoint_count; |
c906108c | 440 | breakpoint_count = num; |
4fa62494 | 441 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
442 | } |
443 | ||
86b17b60 PA |
444 | /* Used by `start_rbreak_breakpoints' below, to record the current |
445 | breakpoint count before "rbreak" creates any breakpoint. */ | |
446 | static int rbreak_start_breakpoint_count; | |
447 | ||
95a42b64 TT |
448 | /* Called at the start an "rbreak" command to record the first |
449 | breakpoint made. */ | |
86b17b60 | 450 | |
95a42b64 TT |
451 | void |
452 | start_rbreak_breakpoints (void) | |
453 | { | |
86b17b60 | 454 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
455 | } |
456 | ||
457 | /* Called at the end of an "rbreak" command to record the last | |
458 | breakpoint made. */ | |
86b17b60 | 459 | |
95a42b64 TT |
460 | void |
461 | end_rbreak_breakpoints (void) | |
462 | { | |
86b17b60 | 463 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
464 | } |
465 | ||
4a64f543 | 466 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
467 | |
468 | void | |
fba45db2 | 469 | clear_breakpoint_hit_counts (void) |
c906108c SS |
470 | { |
471 | struct breakpoint *b; | |
472 | ||
473 | ALL_BREAKPOINTS (b) | |
474 | b->hit_count = 0; | |
475 | } | |
476 | ||
9add0f1b TT |
477 | /* Allocate a new counted_command_line with reference count of 1. |
478 | The new structure owns COMMANDS. */ | |
479 | ||
480 | static struct counted_command_line * | |
481 | alloc_counted_command_line (struct command_line *commands) | |
482 | { | |
483 | struct counted_command_line *result | |
484 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 485 | |
9add0f1b TT |
486 | result->refc = 1; |
487 | result->commands = commands; | |
488 | return result; | |
489 | } | |
490 | ||
491 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
492 | ||
493 | static void | |
494 | incref_counted_command_line (struct counted_command_line *cmd) | |
495 | { | |
496 | if (cmd) | |
497 | ++cmd->refc; | |
498 | } | |
499 | ||
500 | /* Decrement reference count. If the reference count reaches 0, | |
501 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
502 | nothing if *CMDP is NULL. */ | |
503 | ||
504 | static void | |
505 | decref_counted_command_line (struct counted_command_line **cmdp) | |
506 | { | |
507 | if (*cmdp) | |
508 | { | |
509 | if (--(*cmdp)->refc == 0) | |
510 | { | |
511 | free_command_lines (&(*cmdp)->commands); | |
512 | xfree (*cmdp); | |
513 | } | |
514 | *cmdp = NULL; | |
515 | } | |
516 | } | |
517 | ||
518 | /* A cleanup function that calls decref_counted_command_line. */ | |
519 | ||
520 | static void | |
521 | do_cleanup_counted_command_line (void *arg) | |
522 | { | |
523 | decref_counted_command_line (arg); | |
524 | } | |
525 | ||
526 | /* Create a cleanup that calls decref_counted_command_line on the | |
527 | argument. */ | |
528 | ||
529 | static struct cleanup * | |
530 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
531 | { | |
532 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
533 | } | |
534 | ||
c906108c SS |
535 | /* Default address, symtab and line to put a breakpoint at |
536 | for "break" command with no arg. | |
4a64f543 | 537 | If default_breakpoint_valid is zero, the other three are |
c906108c SS |
538 | not valid, and "break" with no arg is an error. |
539 | ||
540 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
541 | ||
542 | int default_breakpoint_valid; | |
543 | CORE_ADDR default_breakpoint_address; | |
544 | struct symtab *default_breakpoint_symtab; | |
545 | int default_breakpoint_line; | |
6c95b8df PA |
546 | struct program_space *default_breakpoint_pspace; |
547 | ||
c906108c | 548 | \f |
4a64f543 MS |
549 | /* *PP is a string denoting a breakpoint. Get the number of the |
550 | breakpoint. Advance *PP after the string and any trailing | |
551 | whitespace. | |
c906108c | 552 | |
4a64f543 MS |
553 | Currently the string can either be a number or "$" followed by the |
554 | name of a convenience variable. Making it an expression wouldn't | |
555 | work well for map_breakpoint_numbers (e.g. "4 + 5 + 6"). | |
40c03ae8 EZ |
556 | |
557 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
558 | |
559 | TRAILER is a character which can be found after the number; most | |
4a64f543 MS |
560 | commonly this is `-'. If you don't want a trailer, use \0. */ |
561 | ||
c906108c | 562 | static int |
fba45db2 | 563 | get_number_trailer (char **pp, int trailer) |
c906108c | 564 | { |
5c44784c | 565 | int retval = 0; /* default */ |
c906108c SS |
566 | char *p = *pp; |
567 | ||
568 | if (p == NULL) | |
569 | /* Empty line means refer to the last breakpoint. */ | |
570 | return breakpoint_count; | |
571 | else if (*p == '$') | |
572 | { | |
573 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 574 | to pass to lookup_internalvar(). */ |
c906108c SS |
575 | char *varname; |
576 | char *start = ++p; | |
4fa62494 | 577 | LONGEST val; |
c906108c SS |
578 | |
579 | while (isalnum (*p) || *p == '_') | |
580 | p++; | |
581 | varname = (char *) alloca (p - start + 1); | |
582 | strncpy (varname, start, p - start); | |
583 | varname[p - start] = '\0'; | |
4fa62494 UW |
584 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
585 | retval = (int) val; | |
5c44784c JM |
586 | else |
587 | { | |
a3f17187 | 588 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
589 | retval = 0; |
590 | } | |
c906108c SS |
591 | } |
592 | else | |
593 | { | |
594 | if (*p == '-') | |
595 | ++p; | |
596 | while (*p >= '0' && *p <= '9') | |
597 | ++p; | |
598 | if (p == *pp) | |
599 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c | 600 | { |
4a64f543 | 601 | /* Skip non-numeric token. */ |
5c44784c JM |
602 | while (*p && !isspace((int) *p)) |
603 | ++p; | |
4a64f543 | 604 | /* Return zero, which caller must interpret as error. */ |
5c44784c JM |
605 | retval = 0; |
606 | } | |
607 | else | |
608 | retval = atoi (*pp); | |
609 | } | |
610 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
611 | { | |
4a64f543 | 612 | /* Trailing junk: return 0 and let caller print error msg. */ |
5c44784c JM |
613 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) |
614 | ++p; | |
615 | retval = 0; | |
c906108c | 616 | } |
c906108c SS |
617 | while (isspace (*p)) |
618 | p++; | |
619 | *pp = p; | |
620 | return retval; | |
621 | } | |
5c44784c | 622 | |
11cf8741 | 623 | |
5c44784c JM |
624 | /* Like get_number_trailer, but don't allow a trailer. */ |
625 | int | |
fba45db2 | 626 | get_number (char **pp) |
5c44784c JM |
627 | { |
628 | return get_number_trailer (pp, '\0'); | |
629 | } | |
630 | ||
631 | /* Parse a number or a range. | |
4a64f543 MS |
632 | A number will be of the form handled by get_number. |
633 | A range will be of the form <number1> - <number2>, and | |
634 | will represent all the integers between number1 and number2, | |
635 | inclusive. | |
636 | ||
637 | While processing a range, this fuction is called iteratively; | |
638 | At each call it will return the next value in the range. | |
639 | ||
640 | At the beginning of parsing a range, the char pointer PP will | |
641 | be advanced past <number1> and left pointing at the '-' token. | |
642 | Subsequent calls will not advance the pointer until the range | |
643 | is completed. The call that completes the range will advance | |
644 | pointer PP past <number2>. */ | |
5c44784c JM |
645 | |
646 | int | |
fba45db2 | 647 | get_number_or_range (char **pp) |
5c44784c JM |
648 | { |
649 | static int last_retval, end_value; | |
650 | static char *end_ptr; | |
651 | static int in_range = 0; | |
652 | ||
653 | if (**pp != '-') | |
654 | { | |
655 | /* Default case: pp is pointing either to a solo number, | |
656 | or to the first number of a range. */ | |
657 | last_retval = get_number_trailer (pp, '-'); | |
658 | if (**pp == '-') | |
659 | { | |
660 | char **temp; | |
661 | ||
662 | /* This is the start of a range (<number1> - <number2>). | |
663 | Skip the '-', parse and remember the second number, | |
664 | and also remember the end of the final token. */ | |
665 | ||
666 | temp = &end_ptr; | |
667 | end_ptr = *pp + 1; | |
668 | while (isspace ((int) *end_ptr)) | |
669 | end_ptr++; /* skip white space */ | |
670 | end_value = get_number (temp); | |
671 | if (end_value < last_retval) | |
672 | { | |
8a3fe4f8 | 673 | error (_("inverted range")); |
5c44784c JM |
674 | } |
675 | else if (end_value == last_retval) | |
676 | { | |
4a64f543 | 677 | /* Degenerate range (number1 == number2). Advance the |
5c44784c JM |
678 | token pointer so that the range will be treated as a |
679 | single number. */ | |
680 | *pp = end_ptr; | |
681 | } | |
682 | else | |
683 | in_range = 1; | |
684 | } | |
685 | } | |
686 | else if (! in_range) | |
8a3fe4f8 | 687 | error (_("negative value")); |
5c44784c JM |
688 | else |
689 | { | |
690 | /* pp points to the '-' that betokens a range. All | |
691 | number-parsing has already been done. Return the next | |
692 | integer value (one greater than the saved previous value). | |
693 | Do not advance the token pointer 'pp' until the end of range | |
694 | is reached. */ | |
695 | ||
696 | if (++last_retval == end_value) | |
697 | { | |
698 | /* End of range reached; advance token pointer. */ | |
699 | *pp = end_ptr; | |
700 | in_range = 0; | |
701 | } | |
702 | } | |
703 | return last_retval; | |
704 | } | |
705 | ||
48cb2d85 VP |
706 | /* Return the breakpoint with the specified number, or NULL |
707 | if the number does not refer to an existing breakpoint. */ | |
708 | ||
709 | struct breakpoint * | |
710 | get_breakpoint (int num) | |
711 | { | |
712 | struct breakpoint *b; | |
713 | ||
714 | ALL_BREAKPOINTS (b) | |
715 | if (b->number == num) | |
716 | return b; | |
717 | ||
718 | return NULL; | |
719 | } | |
5c44784c | 720 | |
c906108c | 721 | \f |
adc36818 PM |
722 | |
723 | void | |
724 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
725 | int from_tty) | |
726 | { | |
727 | struct bp_location *loc = b->loc; | |
728 | ||
729 | for (; loc; loc = loc->next) | |
730 | { | |
731 | xfree (loc->cond); | |
732 | loc->cond = NULL; | |
733 | } | |
734 | xfree (b->cond_string); | |
735 | b->cond_string = NULL; | |
736 | xfree (b->cond_exp); | |
737 | b->cond_exp = NULL; | |
738 | ||
739 | if (*exp == 0) | |
740 | { | |
741 | if (from_tty) | |
742 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
743 | } | |
744 | else | |
745 | { | |
746 | char *arg = exp; | |
cc59ec59 | 747 | |
adc36818 PM |
748 | /* I don't know if it matters whether this is the string the user |
749 | typed in or the decompiled expression. */ | |
750 | b->cond_string = xstrdup (arg); | |
751 | b->condition_not_parsed = 0; | |
752 | ||
753 | if (is_watchpoint (b)) | |
754 | { | |
755 | innermost_block = NULL; | |
756 | arg = exp; | |
757 | b->cond_exp = parse_exp_1 (&arg, 0, 0); | |
758 | if (*arg) | |
759 | error (_("Junk at end of expression")); | |
760 | b->cond_exp_valid_block = innermost_block; | |
761 | } | |
762 | else | |
763 | { | |
764 | for (loc = b->loc; loc; loc = loc->next) | |
765 | { | |
766 | arg = exp; | |
767 | loc->cond = | |
768 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
769 | if (*arg) | |
770 | error (_("Junk at end of expression")); | |
771 | } | |
772 | } | |
773 | } | |
774 | breakpoints_changed (); | |
775 | observer_notify_breakpoint_modified (b->number); | |
776 | } | |
777 | ||
c906108c SS |
778 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
779 | ||
780 | static void | |
fba45db2 | 781 | condition_command (char *arg, int from_tty) |
c906108c | 782 | { |
52f0bd74 | 783 | struct breakpoint *b; |
c906108c | 784 | char *p; |
52f0bd74 | 785 | int bnum; |
c906108c SS |
786 | |
787 | if (arg == 0) | |
e2e0b3e5 | 788 | error_no_arg (_("breakpoint number")); |
c906108c SS |
789 | |
790 | p = arg; | |
791 | bnum = get_number (&p); | |
5c44784c | 792 | if (bnum == 0) |
8a3fe4f8 | 793 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
794 | |
795 | ALL_BREAKPOINTS (b) | |
796 | if (b->number == bnum) | |
2f069f6f | 797 | { |
2566ad2d | 798 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
799 | return; |
800 | } | |
c906108c | 801 | |
8a3fe4f8 | 802 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
803 | } |
804 | ||
a7bdde9e VP |
805 | /* Check that COMMAND do not contain commands that are suitable |
806 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
807 | Throw if any such commands is found. */ |
808 | ||
a7bdde9e VP |
809 | static void |
810 | check_no_tracepoint_commands (struct command_line *commands) | |
811 | { | |
812 | struct command_line *c; | |
cc59ec59 | 813 | |
a7bdde9e VP |
814 | for (c = commands; c; c = c->next) |
815 | { | |
816 | int i; | |
817 | ||
818 | if (c->control_type == while_stepping_control) | |
819 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
820 | ||
821 | for (i = 0; i < c->body_count; ++i) | |
822 | check_no_tracepoint_commands ((c->body_list)[i]); | |
823 | ||
824 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 825 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
826 | command directly. */ |
827 | if (strstr (c->line, "collect ") == c->line) | |
828 | error (_("The 'collect' command can only be used for tracepoints")); | |
829 | ||
51661e93 VP |
830 | if (strstr (c->line, "teval ") == c->line) |
831 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
832 | } |
833 | } | |
834 | ||
d77f58be SS |
835 | /* Encapsulate tests for different types of tracepoints. */ |
836 | ||
a7bdde9e | 837 | int |
d77f58be | 838 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 839 | { |
0fb4aa4b PA |
840 | return (b->type == bp_tracepoint |
841 | || b->type == bp_fast_tracepoint | |
842 | || b->type == bp_static_tracepoint); | |
a7bdde9e | 843 | } |
d77f58be | 844 | |
95a42b64 TT |
845 | /* A helper function that validsates that COMMANDS are valid for a |
846 | breakpoint. This function will throw an exception if a problem is | |
847 | found. */ | |
48cb2d85 | 848 | |
95a42b64 TT |
849 | static void |
850 | validate_commands_for_breakpoint (struct breakpoint *b, | |
851 | struct command_line *commands) | |
48cb2d85 | 852 | { |
d77f58be | 853 | if (is_tracepoint (b)) |
a7bdde9e | 854 | { |
4a64f543 MS |
855 | /* We need to verify that each top-level element of commands is |
856 | valid for tracepoints, that there's at most one | |
857 | while-stepping element, and that while-stepping's body has | |
858 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
859 | struct command_line *c; |
860 | struct command_line *while_stepping = 0; | |
861 | for (c = commands; c; c = c->next) | |
862 | { | |
a7bdde9e VP |
863 | if (c->control_type == while_stepping_control) |
864 | { | |
865 | if (b->type == bp_fast_tracepoint) | |
0fb4aa4b PA |
866 | error (_("\ |
867 | The 'while-stepping' command cannot be used for fast tracepoint")); | |
868 | else if (b->type == bp_static_tracepoint) | |
869 | error (_("\ | |
870 | The 'while-stepping' command cannot be used for static tracepoint")); | |
a7bdde9e VP |
871 | |
872 | if (while_stepping) | |
873 | error (_("The 'while-stepping' command can be used only once")); | |
874 | else | |
875 | while_stepping = c; | |
876 | } | |
877 | } | |
878 | if (while_stepping) | |
879 | { | |
880 | struct command_line *c2; | |
881 | ||
882 | gdb_assert (while_stepping->body_count == 1); | |
883 | c2 = while_stepping->body_list[0]; | |
884 | for (; c2; c2 = c2->next) | |
885 | { | |
a7bdde9e VP |
886 | if (c2->control_type == while_stepping_control) |
887 | error (_("The 'while-stepping' command cannot be nested")); | |
888 | } | |
889 | } | |
890 | } | |
891 | else | |
892 | { | |
893 | check_no_tracepoint_commands (commands); | |
894 | } | |
95a42b64 TT |
895 | } |
896 | ||
0fb4aa4b PA |
897 | /* Return a vector of all the static tracepoints set at ADDR. The |
898 | caller is responsible for releasing the vector. */ | |
899 | ||
900 | VEC(breakpoint_p) * | |
901 | static_tracepoints_here (CORE_ADDR addr) | |
902 | { | |
903 | struct breakpoint *b; | |
904 | VEC(breakpoint_p) *found = 0; | |
905 | struct bp_location *loc; | |
906 | ||
907 | ALL_BREAKPOINTS (b) | |
908 | if (b->type == bp_static_tracepoint) | |
909 | { | |
910 | for (loc = b->loc; loc; loc = loc->next) | |
911 | if (loc->address == addr) | |
912 | VEC_safe_push(breakpoint_p, found, b); | |
913 | } | |
914 | ||
915 | return found; | |
916 | } | |
917 | ||
95a42b64 | 918 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 919 | validate that only allowed commands are included. */ |
95a42b64 TT |
920 | |
921 | void | |
4a64f543 MS |
922 | breakpoint_set_commands (struct breakpoint *b, |
923 | struct command_line *commands) | |
95a42b64 TT |
924 | { |
925 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 926 | |
9add0f1b TT |
927 | decref_counted_command_line (&b->commands); |
928 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
929 | breakpoints_changed (); |
930 | observer_notify_breakpoint_modified (b->number); | |
931 | } | |
932 | ||
95a42b64 TT |
933 | void |
934 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
935 | { |
936 | struct breakpoint *b = closure; | |
cc59ec59 | 937 | |
a7bdde9e VP |
938 | validate_actionline (&line, b); |
939 | } | |
940 | ||
95a42b64 TT |
941 | /* A structure used to pass information through |
942 | map_breakpoint_numbers. */ | |
943 | ||
944 | struct commands_info | |
945 | { | |
946 | /* True if the command was typed at a tty. */ | |
947 | int from_tty; | |
86b17b60 PA |
948 | |
949 | /* The breakpoint range spec. */ | |
950 | char *arg; | |
951 | ||
95a42b64 TT |
952 | /* Non-NULL if the body of the commands are being read from this |
953 | already-parsed command. */ | |
954 | struct command_line *control; | |
86b17b60 | 955 | |
95a42b64 TT |
956 | /* The command lines read from the user, or NULL if they have not |
957 | yet been read. */ | |
958 | struct counted_command_line *cmd; | |
959 | }; | |
960 | ||
961 | /* A callback for map_breakpoint_numbers that sets the commands for | |
962 | commands_command. */ | |
963 | ||
c906108c | 964 | static void |
95a42b64 | 965 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 966 | { |
95a42b64 | 967 | struct commands_info *info = data; |
c906108c | 968 | |
95a42b64 TT |
969 | if (info->cmd == NULL) |
970 | { | |
971 | struct command_line *l; | |
5c44784c | 972 | |
95a42b64 TT |
973 | if (info->control != NULL) |
974 | l = copy_command_lines (info->control->body_list[0]); | |
975 | else | |
86b17b60 PA |
976 | { |
977 | struct cleanup *old_chain; | |
978 | char *str; | |
c5aa993b | 979 | |
86b17b60 PA |
980 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
981 | info->arg); | |
982 | ||
983 | old_chain = make_cleanup (xfree, str); | |
984 | ||
985 | l = read_command_lines (str, | |
986 | info->from_tty, 1, | |
d77f58be | 987 | (is_tracepoint (b) |
86b17b60 PA |
988 | ? check_tracepoint_command : 0), |
989 | b); | |
990 | ||
991 | do_cleanups (old_chain); | |
992 | } | |
a7bdde9e | 993 | |
95a42b64 TT |
994 | info->cmd = alloc_counted_command_line (l); |
995 | } | |
996 | ||
997 | /* If a breakpoint was on the list more than once, we don't need to | |
998 | do anything. */ | |
999 | if (b->commands != info->cmd) | |
1000 | { | |
1001 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1002 | incref_counted_command_line (info->cmd); | |
1003 | decref_counted_command_line (&b->commands); | |
1004 | b->commands = info->cmd; | |
1005 | breakpoints_changed (); | |
1006 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 1007 | } |
95a42b64 TT |
1008 | } |
1009 | ||
1010 | static void | |
4a64f543 MS |
1011 | commands_command_1 (char *arg, int from_tty, |
1012 | struct command_line *control) | |
95a42b64 TT |
1013 | { |
1014 | struct cleanup *cleanups; | |
1015 | struct commands_info info; | |
1016 | ||
1017 | info.from_tty = from_tty; | |
1018 | info.control = control; | |
1019 | info.cmd = NULL; | |
1020 | /* If we read command lines from the user, then `info' will hold an | |
1021 | extra reference to the commands that we must clean up. */ | |
1022 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1023 | ||
1024 | if (arg == NULL || !*arg) | |
1025 | { | |
86b17b60 | 1026 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1027 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1028 | breakpoint_count); | |
95a42b64 TT |
1029 | else if (breakpoint_count > 0) |
1030 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1031 | else |
1032 | { | |
1033 | /* So that we don't try to free the incoming non-NULL | |
1034 | argument in the cleanup below. Mapping breakpoint | |
1035 | numbers will fail in this case. */ | |
1036 | arg = NULL; | |
1037 | } | |
95a42b64 | 1038 | } |
9766ced4 SS |
1039 | else |
1040 | /* The command loop has some static state, so we need to preserve | |
1041 | our argument. */ | |
1042 | arg = xstrdup (arg); | |
86b17b60 PA |
1043 | |
1044 | if (arg != NULL) | |
1045 | make_cleanup (xfree, arg); | |
1046 | ||
1047 | info.arg = arg; | |
95a42b64 TT |
1048 | |
1049 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1050 | ||
1051 | if (info.cmd == NULL) | |
1052 | error (_("No breakpoints specified.")); | |
1053 | ||
1054 | do_cleanups (cleanups); | |
1055 | } | |
1056 | ||
1057 | static void | |
1058 | commands_command (char *arg, int from_tty) | |
1059 | { | |
1060 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1061 | } |
40c03ae8 EZ |
1062 | |
1063 | /* Like commands_command, but instead of reading the commands from | |
1064 | input stream, takes them from an already parsed command structure. | |
1065 | ||
1066 | This is used by cli-script.c to DTRT with breakpoint commands | |
1067 | that are part of if and while bodies. */ | |
1068 | enum command_control_type | |
1069 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1070 | { | |
95a42b64 TT |
1071 | commands_command_1 (arg, 0, cmd); |
1072 | return simple_control; | |
40c03ae8 | 1073 | } |
876fa593 JK |
1074 | |
1075 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1076 | ||
1077 | static int | |
1078 | bp_location_has_shadow (struct bp_location *bl) | |
1079 | { | |
1080 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1081 | return 0; | |
1082 | if (!bl->inserted) | |
1083 | return 0; | |
1084 | if (bl->target_info.shadow_len == 0) | |
1085 | /* bp isn't valid, or doesn't shadow memory. */ | |
1086 | return 0; | |
1087 | return 1; | |
1088 | } | |
1089 | ||
8defab1a | 1090 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1091 | by replacing any memory breakpoints with their shadowed contents. |
1092 | ||
1093 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
1094 | bl->address - bp_location_placed_address_before_address_max |
1095 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1096 | The range we were requested to resolve shadows for is: |
1097 | memaddr ... memaddr + len | |
1098 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1099 | memaddr + len <= (bl->address |
1100 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1101 | and: |
35df4500 | 1102 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1103 | |
8defab1a DJ |
1104 | void |
1105 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1106 | { |
4a64f543 MS |
1107 | /* Left boundary, right boundary and median element of our binary |
1108 | search. */ | |
876fa593 JK |
1109 | unsigned bc_l, bc_r, bc; |
1110 | ||
4a64f543 MS |
1111 | /* Find BC_L which is a leftmost element which may affect BUF |
1112 | content. It is safe to report lower value but a failure to | |
1113 | report higher one. */ | |
876fa593 JK |
1114 | |
1115 | bc_l = 0; | |
1116 | bc_r = bp_location_count; | |
1117 | while (bc_l + 1 < bc_r) | |
1118 | { | |
35df4500 | 1119 | struct bp_location *bl; |
876fa593 JK |
1120 | |
1121 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1122 | bl = bp_location[bc]; |
876fa593 | 1123 | |
4a64f543 MS |
1124 | /* Check first BL->ADDRESS will not overflow due to the added |
1125 | constant. Then advance the left boundary only if we are sure | |
1126 | the BC element can in no way affect the BUF content (MEMADDR | |
1127 | to MEMADDR + LEN range). | |
876fa593 | 1128 | |
4a64f543 MS |
1129 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1130 | offset so that we cannot miss a breakpoint with its shadow | |
1131 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1132 | |
35df4500 TJB |
1133 | if ((bl->address + bp_location_shadow_len_after_address_max |
1134 | >= bl->address) | |
1135 | && (bl->address + bp_location_shadow_len_after_address_max | |
1136 | <= memaddr)) | |
876fa593 JK |
1137 | bc_l = bc; |
1138 | else | |
1139 | bc_r = bc; | |
1140 | } | |
1141 | ||
128070bb PA |
1142 | /* Due to the binary search above, we need to make sure we pick the |
1143 | first location that's at BC_L's address. E.g., if there are | |
1144 | multiple locations at the same address, BC_L may end up pointing | |
1145 | at a duplicate location, and miss the "master"/"inserted" | |
1146 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1147 | B: | |
1148 | ||
1149 | L1@A, L2@A, L3@B, ... | |
1150 | ||
1151 | BC_L could end up pointing at location L2, while the "master" | |
1152 | location could be L1. Since the `loc->inserted' flag is only set | |
1153 | on "master" locations, we'd forget to restore the shadow of L1 | |
1154 | and L2. */ | |
1155 | while (bc_l > 0 | |
1156 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1157 | bc_l--; | |
1158 | ||
876fa593 JK |
1159 | /* Now do full processing of the found relevant range of elements. */ |
1160 | ||
1161 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1162 | { |
35df4500 | 1163 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1164 | CORE_ADDR bp_addr = 0; |
1165 | int bp_size = 0; | |
1166 | int bptoffset = 0; | |
1167 | ||
35df4500 TJB |
1168 | /* bp_location array has BL->OWNER always non-NULL. */ |
1169 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1170 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1171 | bl->owner->number); |
ffce0d52 | 1172 | |
876fa593 JK |
1173 | /* Performance optimization: any futher element can no longer affect BUF |
1174 | content. */ | |
1175 | ||
35df4500 TJB |
1176 | if (bl->address >= bp_location_placed_address_before_address_max |
1177 | && memaddr + len <= (bl->address | |
1178 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1179 | break; |
1180 | ||
35df4500 | 1181 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1182 | continue; |
35df4500 | 1183 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1184 | current_program_space->aspace, 0)) |
1185 | continue; | |
1186 | ||
c5aa993b JM |
1187 | /* Addresses and length of the part of the breakpoint that |
1188 | we need to copy. */ | |
35df4500 TJB |
1189 | bp_addr = bl->target_info.placed_address; |
1190 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1191 | |
c5aa993b JM |
1192 | if (bp_addr + bp_size <= memaddr) |
1193 | /* The breakpoint is entirely before the chunk of memory we | |
1194 | are reading. */ | |
1195 | continue; | |
8defab1a | 1196 | |
c5aa993b JM |
1197 | if (bp_addr >= memaddr + len) |
1198 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1199 | reading. */ |
c5aa993b | 1200 | continue; |
c5aa993b | 1201 | |
8defab1a DJ |
1202 | /* Offset within shadow_contents. */ |
1203 | if (bp_addr < memaddr) | |
1204 | { | |
1205 | /* Only copy the second part of the breakpoint. */ | |
1206 | bp_size -= memaddr - bp_addr; | |
1207 | bptoffset = memaddr - bp_addr; | |
1208 | bp_addr = memaddr; | |
1209 | } | |
c5aa993b | 1210 | |
8defab1a DJ |
1211 | if (bp_addr + bp_size > memaddr + len) |
1212 | { | |
1213 | /* Only copy the first part of the breakpoint. */ | |
1214 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1215 | } | |
c5aa993b | 1216 | |
8defab1a | 1217 | memcpy (buf + bp_addr - memaddr, |
35df4500 | 1218 | bl->target_info.shadow_contents + bptoffset, bp_size); |
c5aa993b | 1219 | } |
c906108c | 1220 | } |
c906108c | 1221 | \f |
c5aa993b | 1222 | |
687595f9 | 1223 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1224 | static void |
687595f9 DJ |
1225 | insert_catchpoint (struct ui_out *uo, void *args) |
1226 | { | |
1227 | struct breakpoint *b = (struct breakpoint *) args; | |
687595f9 | 1228 | |
fe798b75 JB |
1229 | gdb_assert (b->type == bp_catchpoint); |
1230 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1231 | ||
1232 | b->ops->insert (b); | |
687595f9 DJ |
1233 | } |
1234 | ||
60e1c644 PA |
1235 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1236 | ||
a5606eee | 1237 | static int |
d77f58be | 1238 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1239 | { |
1240 | return (bpt->type == bp_hardware_watchpoint | |
1241 | || bpt->type == bp_read_watchpoint | |
1242 | || bpt->type == bp_access_watchpoint); | |
1243 | } | |
7270d8f2 | 1244 | |
60e1c644 PA |
1245 | /* Return true if BPT is of any watchpoint kind, hardware or |
1246 | software. */ | |
1247 | ||
1248 | static int | |
d77f58be | 1249 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1250 | { |
1251 | return (is_hardware_watchpoint (bpt) | |
1252 | || bpt->type == bp_watchpoint); | |
1253 | } | |
1254 | ||
f6bc2008 PA |
1255 | /* Assuming that B is a watchpoint: returns true if the current thread |
1256 | and its running state are safe to evaluate or update watchpoint B. | |
1257 | Watchpoints on local expressions need to be evaluated in the | |
1258 | context of the thread that was current when the watchpoint was | |
1259 | created, and, that thread needs to be stopped to be able to select | |
1260 | the correct frame context. Watchpoints on global expressions can | |
1261 | be evaluated on any thread, and in any state. It is presently left | |
1262 | to the target allowing memory accesses when threads are | |
1263 | running. */ | |
1264 | ||
1265 | static int | |
1266 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1267 | { | |
1268 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1269 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1270 | && !is_executing (inferior_ptid))); | |
1271 | } | |
1272 | ||
567e1b4e JB |
1273 | /* Assuming that B is a watchpoint: |
1274 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1275 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1276 | - Evaluate the condition if there is one, and store the result |
1277 | in b->loc->cond. | |
a5606eee VP |
1278 | - Update the list of values that must be watched in B->loc. |
1279 | ||
4a64f543 MS |
1280 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1281 | nothing. If this is local watchpoint that is out of scope, delete | |
1282 | it. | |
1283 | ||
1284 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1285 | removed + inserted on each stop here. Normal breakpoints must | |
1286 | never be removed because they might be missed by a running thread | |
1287 | when debugging in non-stop mode. On the other hand, hardware | |
1288 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1289 | to each LWP since they are stored in each LWP's hardware debug | |
1290 | registers. Therefore, such LWP must be stopped first in order to | |
1291 | be able to modify its hardware watchpoints. | |
1292 | ||
1293 | Hardware watchpoints must be reset exactly once after being | |
1294 | presented to the user. It cannot be done sooner, because it would | |
1295 | reset the data used to present the watchpoint hit to the user. And | |
1296 | it must not be done later because it could display the same single | |
1297 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1298 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1299 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1300 | not user-visible - its hit is suppressed if the memory content has | |
1301 | not changed. | |
1302 | ||
1303 | The following constraints influence the location where we can reset | |
1304 | hardware watchpoints: | |
1305 | ||
1306 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1307 | called several times when GDB stops. | |
1308 | ||
1309 | [linux] | |
1310 | * Multiple hardware watchpoints can be hit at the same time, | |
1311 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1312 | hit at a time as the reason for stopping, and all the other hits | |
1313 | are presented later, one after the other, each time the user | |
1314 | requests the execution to be resumed. Execution is not resumed | |
1315 | for the threads still having pending hit event stored in | |
1316 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1317 | the inferior on the first stop the thread hit event is kept being | |
1318 | reported from its cached value by linux_nat_stopped_data_address | |
1319 | until the real thread resume happens after the watchpoint gets | |
1320 | presented and thus its LWP_INFO->STATUS gets reset. | |
1321 | ||
1322 | Therefore the hardware watchpoint hit can get safely reset on the | |
1323 | watchpoint removal from inferior. */ | |
a79d3c27 | 1324 | |
b40ce68a | 1325 | static void |
a5606eee | 1326 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1327 | { |
a5606eee | 1328 | int within_current_scope; |
a5606eee | 1329 | struct frame_id saved_frame_id; |
66076460 | 1330 | int frame_saved; |
a5606eee | 1331 | |
f6bc2008 PA |
1332 | /* If this is a local watchpoint, we only want to check if the |
1333 | watchpoint frame is in scope if the current thread is the thread | |
1334 | that was used to create the watchpoint. */ | |
1335 | if (!watchpoint_in_thread_scope (b)) | |
1336 | return; | |
1337 | ||
4a64f543 MS |
1338 | /* We don't free locations. They are stored in bp_location array |
1339 | and update_global_locations will eventually delete them and | |
1340 | remove breakpoints if needed. */ | |
a5606eee VP |
1341 | b->loc = NULL; |
1342 | ||
1343 | if (b->disposition == disp_del_at_next_stop) | |
1344 | return; | |
1345 | ||
66076460 | 1346 | frame_saved = 0; |
a5606eee VP |
1347 | |
1348 | /* Determine if the watchpoint is within scope. */ | |
1349 | if (b->exp_valid_block == NULL) | |
1350 | within_current_scope = 1; | |
1351 | else | |
1352 | { | |
1353 | struct frame_info *fi; | |
66076460 DJ |
1354 | |
1355 | /* Save the current frame's ID so we can restore it after | |
1356 | evaluating the watchpoint expression on its own frame. */ | |
1357 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1358 | took a frame parameter, so that we didn't have to change the | |
1359 | selected frame. */ | |
1360 | frame_saved = 1; | |
1361 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1362 | ||
a5606eee VP |
1363 | fi = frame_find_by_id (b->watchpoint_frame); |
1364 | within_current_scope = (fi != NULL); | |
1365 | if (within_current_scope) | |
1366 | select_frame (fi); | |
1367 | } | |
1368 | ||
1369 | if (within_current_scope && reparse) | |
1370 | { | |
1371 | char *s; | |
d63d0675 | 1372 | |
a5606eee VP |
1373 | if (b->exp) |
1374 | { | |
1375 | xfree (b->exp); | |
1376 | b->exp = NULL; | |
1377 | } | |
d63d0675 | 1378 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1379 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1380 | /* If the meaning of expression itself changed, the old value is | |
1381 | no longer relevant. We don't want to report a watchpoint hit | |
1382 | to the user when the old value and the new value may actually | |
1383 | be completely different objects. */ | |
1384 | value_free (b->val); | |
fa4727a6 DJ |
1385 | b->val = NULL; |
1386 | b->val_valid = 0; | |
60e1c644 PA |
1387 | |
1388 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1389 | expression is stored in the breakpoint object, not in the | |
1390 | locations (re)created below. */ | |
1391 | if (b->cond_string != NULL) | |
1392 | { | |
1393 | if (b->cond_exp != NULL) | |
1394 | { | |
1395 | xfree (b->cond_exp); | |
1396 | b->cond_exp = NULL; | |
1397 | } | |
1398 | ||
1399 | s = b->cond_string; | |
1400 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1401 | } | |
a5606eee | 1402 | } |
a5606eee VP |
1403 | |
1404 | /* If we failed to parse the expression, for example because | |
1405 | it refers to a global variable in a not-yet-loaded shared library, | |
1406 | don't try to insert watchpoint. We don't automatically delete | |
1407 | such watchpoint, though, since failure to parse expression | |
1408 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1409 | if ( !target_has_execution) |
1410 | { | |
1411 | /* Without execution, memory can't change. No use to try and | |
1412 | set watchpoint locations. The watchpoint will be reset when | |
1413 | the target gains execution, through breakpoint_re_set. */ | |
1414 | } | |
1415 | else if (within_current_scope && b->exp) | |
a5606eee | 1416 | { |
0cf6dd15 | 1417 | int pc = 0; |
fa4727a6 | 1418 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1419 | struct program_space *frame_pspace; |
a5606eee | 1420 | |
0cf6dd15 | 1421 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1422 | |
a5606eee VP |
1423 | /* Avoid setting b->val if it's already set. The meaning of |
1424 | b->val is 'the last value' user saw, and we should update | |
1425 | it only if we reported that last value to user. As it | |
1426 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1427 | if (!b->val_valid) |
1428 | { | |
1429 | b->val = v; | |
1430 | b->val_valid = 1; | |
1431 | } | |
a5606eee | 1432 | |
4a64f543 MS |
1433 | /* Change the type of breakpoint between hardware assisted or |
1434 | an ordinary watchpoint depending on the hardware support | |
1435 | and free hardware slots. REPARSE is set when the inferior | |
1436 | is started. */ | |
db2ad4c3 JK |
1437 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
1438 | && reparse) | |
1439 | { | |
ca2d49e8 | 1440 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1441 | |
4a64f543 MS |
1442 | /* We need to determine how many resources are already |
1443 | used for all other hardware watchpoints to see if we | |
1444 | still have enough resources to also fit this watchpoint | |
1445 | in as well. To avoid the hw_watchpoint_used_count call | |
1446 | below from counting this watchpoint, make sure that it | |
1447 | is marked as a software watchpoint. */ | |
7b838ca2 | 1448 | b->type = bp_watchpoint; |
db2ad4c3 JK |
1449 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1450 | &other_type_used); | |
1451 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1452 | ||
ca2d49e8 | 1453 | if (!mem_cnt) |
db2ad4c3 JK |
1454 | b->type = bp_watchpoint; |
1455 | else | |
ca2d49e8 | 1456 | { |
d92524f1 | 1457 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1458 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1459 | if (target_resources_ok <= 0) | |
1460 | b->type = bp_watchpoint; | |
1461 | else | |
1462 | b->type = bp_hardware_watchpoint; | |
1463 | } | |
db2ad4c3 JK |
1464 | } |
1465 | ||
2d134ed3 PA |
1466 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1467 | ||
a5606eee | 1468 | /* Look at each value on the value chain. */ |
fa4727a6 | 1469 | for (v = val_chain; v; v = next) |
a5606eee VP |
1470 | { |
1471 | /* If it's a memory location, and GDB actually needed | |
1472 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1473 | must watch it. If the first value returned is |
1474 | still lazy, that means an error occurred reading it; | |
1475 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1476 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1477 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1478 | { |
1479 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1480 | |
a5606eee VP |
1481 | /* We only watch structs and arrays if user asked |
1482 | for it explicitly, never if they just happen to | |
1483 | appear in the middle of some value chain. */ | |
fa4727a6 | 1484 | if (v == result |
a5606eee VP |
1485 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1486 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1487 | { | |
1488 | CORE_ADDR addr; | |
1489 | int len, type; | |
1490 | struct bp_location *loc, **tmp; | |
1491 | ||
42ae5230 | 1492 | addr = value_address (v); |
a5606eee VP |
1493 | len = TYPE_LENGTH (value_type (v)); |
1494 | type = hw_write; | |
1495 | if (b->type == bp_read_watchpoint) | |
1496 | type = hw_read; | |
1497 | else if (b->type == bp_access_watchpoint) | |
1498 | type = hw_access; | |
1499 | ||
39d61571 | 1500 | loc = allocate_bp_location (b); |
a5606eee VP |
1501 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1502 | ; | |
1503 | *tmp = loc; | |
a6d9a66e | 1504 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1505 | |
1506 | loc->pspace = frame_pspace; | |
a5606eee VP |
1507 | loc->address = addr; |
1508 | loc->length = len; | |
1509 | loc->watchpoint_type = type; | |
1510 | } | |
1511 | } | |
1512 | ||
1513 | next = value_next (v); | |
1514 | if (v != b->val) | |
1515 | value_free (v); | |
1516 | } | |
1517 | ||
c7437ca6 PA |
1518 | /* If a software watchpoint is not watching any memory, then the |
1519 | above left it without any location set up. But, | |
1520 | bpstat_stop_status requires a location to be able to report | |
1521 | stops, so make sure there's at least a dummy one. */ | |
1522 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1523 | { | |
1524 | b->loc = allocate_bp_location (b); | |
1525 | b->loc->pspace = frame_pspace; | |
1526 | b->loc->address = -1; | |
1527 | b->loc->length = -1; | |
1528 | b->loc->watchpoint_type = -1; | |
1529 | } | |
a5606eee VP |
1530 | } |
1531 | else if (!within_current_scope) | |
7270d8f2 | 1532 | { |
a5606eee | 1533 | printf_filtered (_("\ |
cce7e648 | 1534 | Watchpoint %d deleted because the program has left the block\n\ |
a5606eee VP |
1535 | in which its expression is valid.\n"), |
1536 | b->number); | |
1537 | if (b->related_breakpoint) | |
60e1c644 PA |
1538 | { |
1539 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1540 | b->related_breakpoint->related_breakpoint = NULL; | |
1541 | b->related_breakpoint= NULL; | |
1542 | } | |
a5606eee | 1543 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1544 | } |
a5606eee VP |
1545 | |
1546 | /* Restore the selected frame. */ | |
66076460 DJ |
1547 | if (frame_saved) |
1548 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1549 | } |
1550 | ||
a5606eee | 1551 | |
74960c60 VP |
1552 | /* Returns 1 iff breakpoint location should be |
1553 | inserted in the inferior. */ | |
1554 | static int | |
35df4500 | 1555 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1556 | { |
35df4500 | 1557 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1558 | return 0; |
1559 | ||
35df4500 | 1560 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1561 | return 0; |
1562 | ||
35df4500 | 1563 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1564 | return 0; |
1565 | ||
56710373 PA |
1566 | /* This is set for example, when we're attached to the parent of a |
1567 | vfork, and have detached from the child. The child is running | |
1568 | free, and we expect it to do an exec or exit, at which point the | |
1569 | OS makes the parent schedulable again (and the target reports | |
1570 | that the vfork is done). Until the child is done with the shared | |
1571 | memory region, do not insert breakpoints in the parent, otherwise | |
1572 | the child could still trip on the parent's breakpoints. Since | |
1573 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1574 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1575 | return 0; |
1576 | ||
1042e4c0 SS |
1577 | /* Tracepoints are inserted by the target at a time of its choosing, |
1578 | not by us. */ | |
35df4500 | 1579 | if (is_tracepoint (bl->owner)) |
1042e4c0 SS |
1580 | return 0; |
1581 | ||
74960c60 VP |
1582 | return 1; |
1583 | } | |
1584 | ||
35df4500 TJB |
1585 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1586 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
1587 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. | |
879bfdc2 | 1588 | |
4a64f543 MS |
1589 | NOTE drow/2003-09-09: This routine could be broken down to an |
1590 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1591 | static int |
35df4500 | 1592 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1593 | struct ui_file *tmp_error_stream, |
fa3a767f | 1594 | int *disabled_breaks, |
26bb91f3 | 1595 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1596 | { |
1597 | int val = 0; | |
1598 | ||
35df4500 | 1599 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1600 | return 0; |
1601 | ||
8181d85f | 1602 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1603 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1604 | bl->target_info.placed_address = bl->address; | |
1605 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
8181d85f | 1606 | |
35df4500 TJB |
1607 | if (bl->loc_type == bp_loc_software_breakpoint |
1608 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1609 | { |
35df4500 | 1610 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1611 | { |
1612 | /* If the explicitly specified breakpoint type | |
1613 | is not hardware breakpoint, check the memory map to see | |
1614 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1615 | |
765dc015 VP |
1616 | Two important cases are: |
1617 | - location type is not hardware breakpoint, memory | |
1618 | is readonly. We change the type of the location to | |
1619 | hardware breakpoint. | |
4a64f543 MS |
1620 | - location type is hardware breakpoint, memory is |
1621 | read-write. This means we've previously made the | |
1622 | location hardware one, but then the memory map changed, | |
1623 | so we undo. | |
765dc015 | 1624 | |
4a64f543 MS |
1625 | When breakpoints are removed, remove_breakpoints will use |
1626 | location types we've just set here, the only possible | |
1627 | problem is that memory map has changed during running | |
1628 | program, but it's not going to work anyway with current | |
1629 | gdb. */ | |
765dc015 | 1630 | struct mem_region *mr |
35df4500 | 1631 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1632 | |
1633 | if (mr) | |
1634 | { | |
1635 | if (automatic_hardware_breakpoints) | |
1636 | { | |
765dc015 VP |
1637 | enum bp_loc_type new_type; |
1638 | ||
1639 | if (mr->attrib.mode != MEM_RW) | |
1640 | new_type = bp_loc_hardware_breakpoint; | |
1641 | else | |
1642 | new_type = bp_loc_software_breakpoint; | |
1643 | ||
35df4500 | 1644 | if (new_type != bl->loc_type) |
765dc015 VP |
1645 | { |
1646 | static int said = 0; | |
cc59ec59 | 1647 | |
35df4500 | 1648 | bl->loc_type = new_type; |
765dc015 VP |
1649 | if (!said) |
1650 | { | |
1651 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1652 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1653 | said = 1; |
1654 | } | |
1655 | } | |
1656 | } | |
35df4500 | 1657 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 VP |
1658 | && mr->attrib.mode != MEM_RW) |
1659 | warning (_("cannot set software breakpoint at readonly address %s"), | |
35df4500 | 1660 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1661 | } |
1662 | } | |
1663 | ||
879bfdc2 DJ |
1664 | /* First check to see if we have to handle an overlay. */ |
1665 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1666 | || bl->section == NULL |
1667 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1668 | { |
1669 | /* No overlay handling: just set the breakpoint. */ | |
1670 | ||
35df4500 TJB |
1671 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1672 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1673 | &bl->target_info); | |
879bfdc2 | 1674 | else |
35df4500 TJB |
1675 | val = target_insert_breakpoint (bl->gdbarch, |
1676 | &bl->target_info); | |
879bfdc2 DJ |
1677 | } |
1678 | else | |
1679 | { | |
4a64f543 | 1680 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1681 | Shall we set a breakpoint at the LMA? */ |
1682 | if (!overlay_events_enabled) | |
1683 | { | |
1684 | /* Yes -- overlay event support is not active, | |
1685 | so we must try to set a breakpoint at the LMA. | |
1686 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1687 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1688 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1689 | bl->owner->number); |
879bfdc2 DJ |
1690 | else |
1691 | { | |
35df4500 TJB |
1692 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1693 | bl->section); | |
879bfdc2 | 1694 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1695 | bl->overlay_target_info = bl->target_info; |
1696 | bl->overlay_target_info.placed_address = addr; | |
1697 | val = target_insert_breakpoint (bl->gdbarch, | |
1698 | &bl->overlay_target_info); | |
879bfdc2 | 1699 | if (val != 0) |
99361f52 DE |
1700 | fprintf_unfiltered (tmp_error_stream, |
1701 | "Overlay breakpoint %d failed: in ROM?\n", | |
35df4500 | 1702 | bl->owner->number); |
879bfdc2 DJ |
1703 | } |
1704 | } | |
1705 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1706 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1707 | { |
1708 | /* Yes. This overlay section is mapped into memory. */ | |
35df4500 TJB |
1709 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
1710 | val = target_insert_hw_breakpoint (bl->gdbarch, | |
1711 | &bl->target_info); | |
879bfdc2 | 1712 | else |
35df4500 TJB |
1713 | val = target_insert_breakpoint (bl->gdbarch, |
1714 | &bl->target_info); | |
879bfdc2 DJ |
1715 | } |
1716 | else | |
1717 | { | |
1718 | /* No. This breakpoint will not be inserted. | |
1719 | No error, but do not mark the bp as 'inserted'. */ | |
1720 | return 0; | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | if (val) | |
1725 | { | |
1726 | /* Can't set the breakpoint. */ | |
35df4500 | 1727 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1728 | { |
4a64f543 | 1729 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1730 | val = 0; |
35df4500 | 1731 | bl->shlib_disabled = 1; |
879bfdc2 DJ |
1732 | if (!*disabled_breaks) |
1733 | { | |
1734 | fprintf_unfiltered (tmp_error_stream, | |
1735 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1736 | bl->owner->number); |
879bfdc2 DJ |
1737 | fprintf_unfiltered (tmp_error_stream, |
1738 | "Temporarily disabling shared library breakpoints:\n"); | |
1739 | } | |
1740 | *disabled_breaks = 1; | |
1741 | fprintf_unfiltered (tmp_error_stream, | |
35df4500 | 1742 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1743 | } |
1744 | else | |
879bfdc2 | 1745 | { |
35df4500 | 1746 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1747 | { |
1748 | *hw_breakpoint_error = 1; | |
1749 | fprintf_unfiltered (tmp_error_stream, | |
1750 | "Cannot insert hardware breakpoint %d.\n", | |
35df4500 | 1751 | bl->owner->number); |
879bfdc2 DJ |
1752 | } |
1753 | else | |
1754 | { | |
1755 | fprintf_unfiltered (tmp_error_stream, | |
1756 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1757 | bl->owner->number); |
879bfdc2 DJ |
1758 | fprintf_filtered (tmp_error_stream, |
1759 | "Error accessing memory address "); | |
35df4500 | 1760 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1761 | tmp_error_stream); |
879bfdc2 DJ |
1762 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1763 | safe_strerror (val)); | |
1764 | } | |
1765 | ||
1766 | } | |
1767 | } | |
1768 | else | |
35df4500 | 1769 | bl->inserted = 1; |
879bfdc2 DJ |
1770 | |
1771 | return val; | |
1772 | } | |
1773 | ||
35df4500 | 1774 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1775 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1776 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1777 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1778 | { |
35df4500 TJB |
1779 | val = target_insert_watchpoint (bl->address, |
1780 | bl->length, | |
1781 | bl->watchpoint_type, | |
1782 | bl->owner->cond_exp); | |
85d721b8 PA |
1783 | |
1784 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1785 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1786 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1787 | { |
1788 | struct bp_location *loc, **loc_temp; | |
1789 | ||
1790 | /* But don't try to insert it, if there's already another | |
1791 | hw_access location that would be considered a duplicate | |
1792 | of this one. */ | |
1793 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1794 | if (loc != bl |
85d721b8 | 1795 | && loc->watchpoint_type == hw_access |
35df4500 | 1796 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1797 | { |
35df4500 TJB |
1798 | bl->duplicate = 1; |
1799 | bl->inserted = 1; | |
1800 | bl->target_info = loc->target_info; | |
1801 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1802 | val = 0; |
1803 | break; | |
1804 | } | |
1805 | ||
1806 | if (val == 1) | |
1807 | { | |
35df4500 TJB |
1808 | val = target_insert_watchpoint (bl->address, |
1809 | bl->length, | |
0cf6dd15 | 1810 | hw_access, |
35df4500 | 1811 | bl->owner->cond_exp); |
85d721b8 | 1812 | if (val == 0) |
35df4500 | 1813 | bl->watchpoint_type = hw_access; |
85d721b8 PA |
1814 | } |
1815 | } | |
1816 | ||
35df4500 | 1817 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1818 | } |
1819 | ||
35df4500 | 1820 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1821 | { |
71fff37b | 1822 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
35df4500 | 1823 | bl->owner, RETURN_MASK_ERROR); |
9cbc821d | 1824 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
35df4500 | 1825 | bl->owner->number); |
9cbc821d | 1826 | if (e.reason < 0) |
35df4500 | 1827 | bl->owner->enable_state = bp_disabled; |
879bfdc2 | 1828 | else |
35df4500 | 1829 | bl->inserted = 1; |
1640b821 DJ |
1830 | |
1831 | /* We've already printed an error message if there was a problem | |
1832 | inserting this catchpoint, and we've disabled the catchpoint, | |
1833 | so just return success. */ | |
1834 | return 0; | |
879bfdc2 DJ |
1835 | } |
1836 | ||
1837 | return 0; | |
1838 | } | |
1839 | ||
6c95b8df PA |
1840 | /* This function is called when program space PSPACE is about to be |
1841 | deleted. It takes care of updating breakpoints to not reference | |
1842 | PSPACE anymore. */ | |
1843 | ||
1844 | void | |
1845 | breakpoint_program_space_exit (struct program_space *pspace) | |
1846 | { | |
1847 | struct breakpoint *b, *b_temp; | |
876fa593 | 1848 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1849 | |
1850 | /* Remove any breakpoint that was set through this program space. */ | |
1851 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1852 | { | |
1853 | if (b->pspace == pspace) | |
1854 | delete_breakpoint (b); | |
1855 | } | |
1856 | ||
1857 | /* Breakpoints set through other program spaces could have locations | |
1858 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1859 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1860 | { |
1861 | struct bp_location *tmp; | |
1862 | ||
1863 | if (loc->pspace == pspace) | |
1864 | { | |
2bdf28a0 | 1865 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1866 | if (loc->owner->loc == loc) |
1867 | loc->owner->loc = loc->next; | |
1868 | else | |
1869 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1870 | if (tmp->next == loc) | |
1871 | { | |
1872 | tmp->next = loc->next; | |
1873 | break; | |
1874 | } | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | /* Now update the global location list to permanently delete the | |
1879 | removed locations above. */ | |
1880 | update_global_location_list (0); | |
1881 | } | |
1882 | ||
74960c60 VP |
1883 | /* Make sure all breakpoints are inserted in inferior. |
1884 | Throws exception on any error. | |
1885 | A breakpoint that is already inserted won't be inserted | |
1886 | again, so calling this function twice is safe. */ | |
1887 | void | |
1888 | insert_breakpoints (void) | |
1889 | { | |
1890 | struct breakpoint *bpt; | |
1891 | ||
1892 | ALL_BREAKPOINTS (bpt) | |
1893 | if (is_hardware_watchpoint (bpt)) | |
4a64f543 | 1894 | update_watchpoint (bpt, 0 /* don't reparse. */); |
74960c60 | 1895 | |
b60e7edf | 1896 | update_global_location_list (1); |
74960c60 | 1897 | |
c35b1492 PA |
1898 | /* update_global_location_list does not insert breakpoints when |
1899 | always_inserted_mode is not enabled. Explicitly insert them | |
1900 | now. */ | |
1901 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1902 | insert_breakpoint_locations (); |
1903 | } | |
1904 | ||
c906108c SS |
1905 | /* insert_breakpoints is used when starting or continuing the program. |
1906 | remove_breakpoints is used when the program stops. | |
1907 | Both return zero if successful, | |
1908 | or an `errno' value if could not write the inferior. */ | |
1909 | ||
74960c60 VP |
1910 | static void |
1911 | insert_breakpoint_locations (void) | |
c906108c | 1912 | { |
a5606eee | 1913 | struct breakpoint *bpt; |
35df4500 | 1914 | struct bp_location *bl, **blp_tmp; |
e236ba44 | 1915 | int error = 0; |
c906108c SS |
1916 | int val = 0; |
1917 | int disabled_breaks = 0; | |
81d0cc19 | 1918 | int hw_breakpoint_error = 0; |
c906108c | 1919 | |
81d0cc19 | 1920 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1921 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1922 | |
81d0cc19 GS |
1923 | /* Explicitly mark the warning -- this will only be printed if |
1924 | there was an error. */ | |
1925 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1926 | |
1927 | save_current_space_and_thread (); | |
1928 | ||
35df4500 | 1929 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 1930 | { |
35df4500 | 1931 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1932 | continue; |
1933 | ||
4a64f543 MS |
1934 | /* There is no point inserting thread-specific breakpoints if |
1935 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
1936 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
1937 | if (bl->owner->thread != -1 |
1938 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
1939 | continue; |
1940 | ||
35df4500 | 1941 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
1942 | |
1943 | /* For targets that support global breakpoints, there's no need | |
1944 | to select an inferior to insert breakpoint to. In fact, even | |
1945 | if we aren't attached to any process yet, we should still | |
1946 | insert breakpoints. */ | |
1947 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1948 | && ptid_equal (inferior_ptid, null_ptid)) | |
1949 | continue; | |
1950 | ||
35df4500 | 1951 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
879bfdc2 DJ |
1952 | &hw_breakpoint_error); |
1953 | if (val) | |
e236ba44 | 1954 | error = val; |
879bfdc2 | 1955 | } |
c906108c | 1956 | |
4a64f543 MS |
1957 | /* If we failed to insert all locations of a watchpoint, remove |
1958 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
1959 | ALL_BREAKPOINTS (bpt) |
1960 | { | |
1961 | int some_failed = 0; | |
1962 | struct bp_location *loc; | |
1963 | ||
1964 | if (!is_hardware_watchpoint (bpt)) | |
1965 | continue; | |
1966 | ||
d6b74ac4 | 1967 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1968 | continue; |
74960c60 VP |
1969 | |
1970 | if (bpt->disposition == disp_del_at_next_stop) | |
1971 | continue; | |
a5606eee VP |
1972 | |
1973 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1974 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1975 | { |
1976 | some_failed = 1; | |
1977 | break; | |
1978 | } | |
1979 | if (some_failed) | |
1980 | { | |
1981 | for (loc = bpt->loc; loc; loc = loc->next) | |
1982 | if (loc->inserted) | |
1983 | remove_breakpoint (loc, mark_uninserted); | |
1984 | ||
1985 | hw_breakpoint_error = 1; | |
1986 | fprintf_unfiltered (tmp_error_stream, | |
1987 | "Could not insert hardware watchpoint %d.\n", | |
1988 | bpt->number); | |
1989 | error = -1; | |
1990 | } | |
1991 | } | |
1992 | ||
e236ba44 | 1993 | if (error) |
81d0cc19 GS |
1994 | { |
1995 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1996 | message about possibly exhausted resources. */ | |
879bfdc2 | 1997 | if (hw_breakpoint_error) |
81d0cc19 | 1998 | { |
c6510018 MS |
1999 | fprintf_unfiltered (tmp_error_stream, |
2000 | "Could not insert hardware breakpoints:\n\ | |
2001 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2002 | } |
81d0cc19 GS |
2003 | target_terminal_ours_for_output (); |
2004 | error_stream (tmp_error_stream); | |
2005 | } | |
f7545552 TT |
2006 | |
2007 | do_cleanups (cleanups); | |
c906108c SS |
2008 | } |
2009 | ||
c906108c | 2010 | int |
fba45db2 | 2011 | remove_breakpoints (void) |
c906108c | 2012 | { |
35df4500 | 2013 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2014 | int val = 0; |
c906108c | 2015 | |
35df4500 | 2016 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2017 | { |
35df4500 TJB |
2018 | if (bl->inserted) |
2019 | val |= remove_breakpoint (bl, mark_uninserted); | |
c5aa993b | 2020 | } |
3a1bae8e | 2021 | return val; |
c906108c SS |
2022 | } |
2023 | ||
6c95b8df PA |
2024 | /* Remove breakpoints of process PID. */ |
2025 | ||
2026 | int | |
2027 | remove_breakpoints_pid (int pid) | |
2028 | { | |
35df4500 | 2029 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2030 | int val; |
2031 | struct inferior *inf = find_inferior_pid (pid); | |
2032 | ||
35df4500 | 2033 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2034 | { |
35df4500 | 2035 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2036 | continue; |
2037 | ||
35df4500 | 2038 | if (bl->inserted) |
6c95b8df | 2039 | { |
35df4500 | 2040 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2041 | if (val != 0) |
2042 | return val; | |
2043 | } | |
2044 | } | |
2045 | return 0; | |
2046 | } | |
2047 | ||
692590c1 | 2048 | int |
80ce1ecb | 2049 | remove_hw_watchpoints (void) |
692590c1 | 2050 | { |
35df4500 | 2051 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2052 | int val = 0; |
692590c1 | 2053 | |
35df4500 | 2054 | ALL_BP_LOCATIONS (bl, blp_tmp) |
692590c1 | 2055 | { |
35df4500 TJB |
2056 | if (bl->inserted && bl->loc_type == bp_loc_hardware_watchpoint) |
2057 | val |= remove_breakpoint (bl, mark_uninserted); | |
692590c1 | 2058 | } |
3a1bae8e | 2059 | return val; |
692590c1 MS |
2060 | } |
2061 | ||
c906108c | 2062 | int |
fba45db2 | 2063 | reattach_breakpoints (int pid) |
c906108c | 2064 | { |
6c95b8df | 2065 | struct cleanup *old_chain; |
35df4500 | 2066 | struct bp_location *bl, **blp_tmp; |
c906108c | 2067 | int val; |
a4954f26 | 2068 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2069 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2070 | struct inferior *inf; |
2071 | struct thread_info *tp; | |
2072 | ||
2073 | tp = any_live_thread_of_process (pid); | |
2074 | if (tp == NULL) | |
2075 | return 1; | |
2076 | ||
2077 | inf = find_inferior_pid (pid); | |
2078 | old_chain = save_inferior_ptid (); | |
2079 | ||
2080 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2081 | |
2082 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2083 | |
35df4500 | 2084 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2085 | { |
35df4500 | 2086 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2087 | continue; |
2088 | ||
35df4500 | 2089 | if (bl->inserted) |
c5aa993b | 2090 | { |
35df4500 TJB |
2091 | bl->inserted = 0; |
2092 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); | |
c5aa993b JM |
2093 | if (val != 0) |
2094 | { | |
ce696e05 | 2095 | do_cleanups (old_chain); |
c5aa993b JM |
2096 | return val; |
2097 | } | |
2098 | } | |
2099 | } | |
ce696e05 | 2100 | do_cleanups (old_chain); |
c906108c SS |
2101 | return 0; |
2102 | } | |
2103 | ||
e58b0e63 PA |
2104 | static int internal_breakpoint_number = -1; |
2105 | ||
84f4c1fe PM |
2106 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2107 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2108 | from internal_breakpoint_number and that variable decremented. | |
2109 | Otherwis the breakpoint number will be populated from | |
2110 | breakpoint_count and that value incremented. Internal breakpoints | |
2111 | do not set the internal var bpnum. */ | |
2112 | static void | |
2113 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2114 | { | |
2115 | if (internal) | |
2116 | b->number = internal_breakpoint_number--; | |
2117 | else | |
2118 | { | |
2119 | set_breakpoint_count (breakpoint_count + 1); | |
2120 | b->number = breakpoint_count; | |
2121 | } | |
2122 | } | |
2123 | ||
e62c965a | 2124 | static struct breakpoint * |
a6d9a66e UW |
2125 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2126 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2127 | { |
e62c965a PP |
2128 | struct symtab_and_line sal; |
2129 | struct breakpoint *b; | |
2130 | ||
4a64f543 | 2131 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2132 | |
2133 | sal.pc = address; | |
2134 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2135 | sal.pspace = current_program_space; |
e62c965a | 2136 | |
a6d9a66e | 2137 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2138 | b->number = internal_breakpoint_number--; |
2139 | b->disposition = disp_donttouch; | |
2140 | ||
2141 | return b; | |
2142 | } | |
2143 | ||
2144 | static void | |
69de3c6a | 2145 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2146 | { |
69de3c6a | 2147 | struct objfile *objfile; |
e62c965a | 2148 | |
69de3c6a PP |
2149 | ALL_OBJFILES (objfile) |
2150 | { | |
2151 | struct breakpoint *b; | |
2152 | struct minimal_symbol *m; | |
2153 | ||
2154 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2155 | if (m == NULL) | |
2156 | continue; | |
e62c965a | 2157 | |
a6d9a66e UW |
2158 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2159 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2160 | bp_overlay_event); |
2161 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2162 | |
69de3c6a PP |
2163 | if (overlay_debugging == ovly_auto) |
2164 | { | |
2165 | b->enable_state = bp_enabled; | |
2166 | overlay_events_enabled = 1; | |
2167 | } | |
2168 | else | |
2169 | { | |
2170 | b->enable_state = bp_disabled; | |
2171 | overlay_events_enabled = 0; | |
2172 | } | |
e62c965a PP |
2173 | } |
2174 | update_global_location_list (1); | |
2175 | } | |
2176 | ||
0fd8e87f UW |
2177 | static void |
2178 | create_longjmp_master_breakpoint (char *func_name) | |
2179 | { | |
6c95b8df | 2180 | struct program_space *pspace; |
0fd8e87f | 2181 | struct objfile *objfile; |
6c95b8df PA |
2182 | struct cleanup *old_chain; |
2183 | ||
2184 | old_chain = save_current_program_space (); | |
0fd8e87f | 2185 | |
6c95b8df | 2186 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2187 | ALL_OBJFILES (objfile) |
2188 | { | |
2189 | struct breakpoint *b; | |
2190 | struct minimal_symbol *m; | |
2191 | ||
2192 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2193 | continue; | |
2194 | ||
6c95b8df PA |
2195 | set_current_program_space (pspace); |
2196 | ||
0fd8e87f UW |
2197 | m = lookup_minimal_symbol_text (func_name, objfile); |
2198 | if (m == NULL) | |
2199 | continue; | |
2200 | ||
a6d9a66e UW |
2201 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2202 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2203 | bp_longjmp_master); |
2204 | b->addr_string = xstrdup (func_name); | |
2205 | b->enable_state = bp_disabled; | |
2206 | } | |
2207 | update_global_location_list (1); | |
6c95b8df PA |
2208 | |
2209 | do_cleanups (old_chain); | |
0fd8e87f UW |
2210 | } |
2211 | ||
aa7d318d TT |
2212 | /* Create a master std::terminate breakpoint. The actual function |
2213 | looked for is named FUNC_NAME. */ | |
2214 | static void | |
2215 | create_std_terminate_master_breakpoint (const char *func_name) | |
2216 | { | |
2217 | struct program_space *pspace; | |
2218 | struct objfile *objfile; | |
2219 | struct cleanup *old_chain; | |
2220 | ||
2221 | old_chain = save_current_program_space (); | |
2222 | ||
2223 | ALL_PSPACES (pspace) | |
2224 | ALL_OBJFILES (objfile) | |
2225 | { | |
2226 | struct breakpoint *b; | |
2227 | struct minimal_symbol *m; | |
2228 | ||
2229 | set_current_program_space (pspace); | |
2230 | ||
2231 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2232 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2233 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2234 | continue; | |
2235 | ||
2236 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2237 | SYMBOL_VALUE_ADDRESS (m), | |
2238 | bp_std_terminate_master); | |
2239 | b->addr_string = xstrdup (func_name); | |
2240 | b->enable_state = bp_disabled; | |
2241 | } | |
2242 | update_global_location_list (1); | |
2243 | ||
2244 | do_cleanups (old_chain); | |
2245 | } | |
2246 | ||
186c406b TT |
2247 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2248 | ||
2249 | void | |
2250 | create_exception_master_breakpoint (void) | |
2251 | { | |
2252 | struct objfile *objfile; | |
2253 | ||
2254 | ALL_OBJFILES (objfile) | |
2255 | { | |
2256 | struct minimal_symbol *debug_hook; | |
2257 | ||
2258 | debug_hook = lookup_minimal_symbol ("_Unwind_DebugHook", NULL, objfile); | |
2259 | if (debug_hook != NULL) | |
2260 | { | |
2261 | struct breakpoint *b; | |
2262 | CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (debug_hook); | |
2263 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2264 | ||
2265 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2266 | ¤t_target); | |
2267 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); | |
2268 | b->addr_string = xstrdup ("_Unwind_DebugHook"); | |
2269 | b->enable_state = bp_disabled; | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | update_global_location_list (1); | |
2274 | } | |
2275 | ||
c906108c | 2276 | void |
fba45db2 | 2277 | update_breakpoints_after_exec (void) |
c906108c | 2278 | { |
35df4500 | 2279 | struct breakpoint *b, *b_tmp; |
876fa593 | 2280 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2281 | |
25b22b0a PA |
2282 | /* We're about to delete breakpoints from GDB's lists. If the |
2283 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2284 | writing the breakpoints' "shadow contents" back into memory. The | |
2285 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2286 | do that. Instead, the target is responsible from marking | |
2287 | breakpoints out as soon as it detects an exec. We don't do that | |
2288 | here instead, because there may be other attempts to delete | |
2289 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2290 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2291 | if (bploc->pspace == current_program_space) |
2292 | gdb_assert (!bploc->inserted); | |
c906108c | 2293 | |
35df4500 | 2294 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2295 | { |
6c95b8df PA |
2296 | if (b->pspace != current_program_space) |
2297 | continue; | |
2298 | ||
4a64f543 | 2299 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2300 | if (b->type == bp_shlib_event) |
2301 | { | |
2302 | delete_breakpoint (b); | |
2303 | continue; | |
2304 | } | |
c906108c | 2305 | |
4a64f543 | 2306 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2307 | if (b->type == bp_jit_event) |
2308 | { | |
2309 | delete_breakpoint (b); | |
2310 | continue; | |
2311 | } | |
2312 | ||
1900040c | 2313 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2314 | as must overlay event and longjmp master breakpoints. */ |
2315 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2316 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2317 | || b->type == bp_exception_master) | |
c4093a6a JM |
2318 | { |
2319 | delete_breakpoint (b); | |
2320 | continue; | |
2321 | } | |
2322 | ||
4a64f543 | 2323 | /* Step-resume breakpoints are meaningless after an exec(). */ |
c5aa993b JM |
2324 | if (b->type == bp_step_resume) |
2325 | { | |
2326 | delete_breakpoint (b); | |
2327 | continue; | |
2328 | } | |
2329 | ||
611c83ae PA |
2330 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2331 | after an exec. */ | |
186c406b TT |
2332 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2333 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2334 | { |
2335 | delete_breakpoint (b); | |
2336 | continue; | |
2337 | } | |
2338 | ||
ce78b96d JB |
2339 | if (b->type == bp_catchpoint) |
2340 | { | |
2341 | /* For now, none of the bp_catchpoint breakpoints need to | |
2342 | do anything at this point. In the future, if some of | |
2343 | the catchpoints need to something, we will need to add | |
2344 | a new method, and call this method from here. */ | |
2345 | continue; | |
2346 | } | |
2347 | ||
c5aa993b JM |
2348 | /* bp_finish is a special case. The only way we ought to be able |
2349 | to see one of these when an exec() has happened, is if the user | |
2350 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2351 | carries them to the call-site of the current callee, by setting | |
2352 | a temporary bp there and resuming. But in this case, the finish | |
2353 | will carry them entirely through the vfork & exec. | |
2354 | ||
2355 | We don't want to allow a bp_finish to remain inserted now. But | |
2356 | we can't safely delete it, 'cause finish_command has a handle to | |
2357 | the bp on a bpstat, and will later want to delete it. There's a | |
2358 | chance (and I've seen it happen) that if we delete the bp_finish | |
2359 | here, that its storage will get reused by the time finish_command | |
2360 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2361 | We really must allow finish_command to delete a bp_finish. | |
2362 | ||
53a5351d JM |
2363 | In the absense of a general solution for the "how do we know |
2364 | it's safe to delete something others may have handles to?" | |
2365 | problem, what we'll do here is just uninsert the bp_finish, and | |
2366 | let finish_command delete it. | |
2367 | ||
2368 | (We know the bp_finish is "doomed" in the sense that it's | |
2369 | momentary, and will be deleted as soon as finish_command sees | |
2370 | the inferior stopped. So it doesn't matter that the bp's | |
2371 | address is probably bogus in the new a.out, unlike e.g., the | |
2372 | solib breakpoints.) */ | |
c5aa993b | 2373 | |
c5aa993b JM |
2374 | if (b->type == bp_finish) |
2375 | { | |
2376 | continue; | |
2377 | } | |
2378 | ||
2379 | /* Without a symbolic address, we have little hope of the | |
2380 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2381 | a.out. */ |
c5aa993b JM |
2382 | if (b->addr_string == NULL) |
2383 | { | |
2384 | delete_breakpoint (b); | |
2385 | continue; | |
2386 | } | |
c5aa993b | 2387 | } |
1900040c | 2388 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2389 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2390 | create_longjmp_master_breakpoint ("longjmp"); |
2391 | create_longjmp_master_breakpoint ("_longjmp"); | |
2392 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2393 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2394 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 2395 | create_exception_master_breakpoint (); |
c906108c SS |
2396 | } |
2397 | ||
2398 | int | |
fba45db2 | 2399 | detach_breakpoints (int pid) |
c906108c | 2400 | { |
35df4500 | 2401 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2402 | int val = 0; |
ce696e05 | 2403 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2404 | struct inferior *inf = current_inferior (); |
c5aa993b | 2405 | |
39f77062 | 2406 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2407 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2408 | |
6c95b8df | 2409 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2410 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2411 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2412 | { |
35df4500 | 2413 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2414 | continue; |
2415 | ||
35df4500 TJB |
2416 | if (bl->inserted) |
2417 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2418 | } |
d03285ec UW |
2419 | |
2420 | /* Detach single-step breakpoints as well. */ | |
2421 | detach_single_step_breakpoints (); | |
2422 | ||
ce696e05 | 2423 | do_cleanups (old_chain); |
3a1bae8e | 2424 | return val; |
c906108c SS |
2425 | } |
2426 | ||
35df4500 | 2427 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2428 | Note that this is used to detach breakpoints from a child fork. |
2429 | When we get here, the child isn't in the inferior list, and neither | |
2430 | do we have objects to represent its address space --- we should | |
35df4500 | 2431 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2432 | |
c906108c | 2433 | static int |
35df4500 | 2434 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2435 | { |
2436 | int val; | |
c5aa993b | 2437 | |
35df4500 TJB |
2438 | /* BL is never in moribund_locations by our callers. */ |
2439 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2440 | |
35df4500 | 2441 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2442 | /* Permanent breakpoints cannot be inserted or removed. */ |
2443 | return 0; | |
2444 | ||
74960c60 VP |
2445 | /* The type of none suggests that owner is actually deleted. |
2446 | This should not ever happen. */ | |
35df4500 | 2447 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2448 | |
35df4500 TJB |
2449 | if (bl->loc_type == bp_loc_software_breakpoint |
2450 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2451 | { |
c02f5703 MS |
2452 | /* "Normal" instruction breakpoint: either the standard |
2453 | trap-instruction bp (bp_breakpoint), or a | |
2454 | bp_hardware_breakpoint. */ | |
2455 | ||
2456 | /* First check to see if we have to handle an overlay. */ | |
2457 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2458 | || bl->section == NULL |
2459 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2460 | { |
2461 | /* No overlay handling: just remove the breakpoint. */ | |
2462 | ||
35df4500 TJB |
2463 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2464 | val = target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
c02f5703 | 2465 | else |
35df4500 | 2466 | val = target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
c02f5703 | 2467 | } |
c906108c SS |
2468 | else |
2469 | { | |
4a64f543 | 2470 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2471 | Did we set a breakpoint at the LMA? */ |
2472 | if (!overlay_events_enabled) | |
2473 | { | |
2474 | /* Yes -- overlay event support is not active, so we | |
2475 | should have set a breakpoint at the LMA. Remove it. | |
2476 | */ | |
c02f5703 MS |
2477 | /* Ignore any failures: if the LMA is in ROM, we will |
2478 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2479 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2480 | target_remove_hw_breakpoint (bl->gdbarch, | |
2481 | &bl->overlay_target_info); | |
c02f5703 | 2482 | else |
35df4500 TJB |
2483 | target_remove_breakpoint (bl->gdbarch, |
2484 | &bl->overlay_target_info); | |
c02f5703 MS |
2485 | } |
2486 | /* Did we set a breakpoint at the VMA? | |
2487 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2488 | if (bl->inserted) |
c906108c | 2489 | { |
c02f5703 MS |
2490 | /* Yes -- remove it. Previously we did not bother to |
2491 | remove the breakpoint if the section had been | |
2492 | unmapped, but let's not rely on that being safe. We | |
2493 | don't know what the overlay manager might do. */ | |
35df4500 TJB |
2494 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2495 | val = target_remove_hw_breakpoint (bl->gdbarch, | |
2496 | &bl->target_info); | |
aa67235e UW |
2497 | |
2498 | /* However, we should remove *software* breakpoints only | |
2499 | if the section is still mapped, or else we overwrite | |
2500 | wrong code with the saved shadow contents. */ | |
35df4500 TJB |
2501 | else if (section_is_mapped (bl->section)) |
2502 | val = target_remove_breakpoint (bl->gdbarch, | |
2503 | &bl->target_info); | |
aa67235e UW |
2504 | else |
2505 | val = 0; | |
c906108c | 2506 | } |
c02f5703 MS |
2507 | else |
2508 | { | |
2509 | /* No -- not inserted, so no need to remove. No error. */ | |
2510 | val = 0; | |
2511 | } | |
c906108c | 2512 | } |
879d1e6b UW |
2513 | |
2514 | /* In some cases, we might not be able to remove a breakpoint | |
2515 | in a shared library that has already been removed, but we | |
2516 | have not yet processed the shlib unload event. */ | |
35df4500 | 2517 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2518 | val = 0; |
2519 | ||
c906108c SS |
2520 | if (val) |
2521 | return val; | |
35df4500 | 2522 | bl->inserted = (is == mark_inserted); |
c906108c | 2523 | } |
35df4500 | 2524 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2525 | { |
35df4500 TJB |
2526 | bl->inserted = (is == mark_inserted); |
2527 | val = target_remove_watchpoint (bl->address, bl->length, | |
4a64f543 MS |
2528 | bl->watchpoint_type, |
2529 | bl->owner->cond_exp); | |
2e70b7b9 | 2530 | |
c906108c | 2531 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2532 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2533 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2534 | bl->owner->number); |
c906108c | 2535 | } |
35df4500 TJB |
2536 | else if (bl->owner->type == bp_catchpoint |
2537 | && breakpoint_enabled (bl->owner) | |
2538 | && !bl->duplicate) | |
ce78b96d | 2539 | { |
35df4500 | 2540 | gdb_assert (bl->owner->ops != NULL && bl->owner->ops->remove != NULL); |
ce78b96d | 2541 | |
35df4500 | 2542 | val = bl->owner->ops->remove (bl->owner); |
ce78b96d JB |
2543 | if (val) |
2544 | return val; | |
35df4500 | 2545 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2546 | } |
c906108c SS |
2547 | |
2548 | return 0; | |
2549 | } | |
2550 | ||
6c95b8df | 2551 | static int |
35df4500 | 2552 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2553 | { |
2554 | int ret; | |
2555 | struct cleanup *old_chain; | |
2556 | ||
35df4500 TJB |
2557 | /* BL is never in moribund_locations by our callers. */ |
2558 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2559 | |
35df4500 | 2560 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2561 | /* Permanent breakpoints cannot be inserted or removed. */ |
2562 | return 0; | |
2563 | ||
2564 | /* The type of none suggests that owner is actually deleted. | |
2565 | This should not ever happen. */ | |
35df4500 | 2566 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2567 | |
2568 | old_chain = save_current_space_and_thread (); | |
2569 | ||
35df4500 | 2570 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2571 | |
35df4500 | 2572 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2573 | |
2574 | do_cleanups (old_chain); | |
2575 | return ret; | |
2576 | } | |
2577 | ||
c906108c SS |
2578 | /* Clear the "inserted" flag in all breakpoints. */ |
2579 | ||
25b22b0a | 2580 | void |
fba45db2 | 2581 | mark_breakpoints_out (void) |
c906108c | 2582 | { |
35df4500 | 2583 | struct bp_location *bl, **blp_tmp; |
c906108c | 2584 | |
35df4500 TJB |
2585 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2586 | if (bl->pspace == current_program_space) | |
2587 | bl->inserted = 0; | |
c906108c SS |
2588 | } |
2589 | ||
53a5351d JM |
2590 | /* Clear the "inserted" flag in all breakpoints and delete any |
2591 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2592 | |
2593 | Plus other such housekeeping that has to be done for breakpoints | |
2594 | between runs. | |
2595 | ||
53a5351d JM |
2596 | Note: this function gets called at the end of a run (by |
2597 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2598 | init_wait_for_inferior). */ |
c906108c SS |
2599 | |
2600 | ||
2601 | ||
2602 | void | |
fba45db2 | 2603 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2604 | { |
35df4500 TJB |
2605 | struct breakpoint *b, *b_tmp; |
2606 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2607 | int ix; |
6c95b8df | 2608 | struct program_space *pspace = current_program_space; |
c906108c | 2609 | |
50c71eaf PA |
2610 | /* If breakpoint locations are shared across processes, then there's |
2611 | nothing to do. */ | |
2567c7d9 | 2612 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2613 | return; |
2614 | ||
35df4500 | 2615 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2616 | { |
35df4500 TJB |
2617 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2618 | if (bl->pspace == pspace | |
2619 | && bl->owner->enable_state != bp_permanent) | |
2620 | bl->inserted = 0; | |
6c95b8df | 2621 | } |
075f6582 | 2622 | |
35df4500 | 2623 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2624 | { |
6c95b8df PA |
2625 | if (b->loc && b->loc->pspace != pspace) |
2626 | continue; | |
2627 | ||
c5aa993b JM |
2628 | switch (b->type) |
2629 | { | |
2630 | case bp_call_dummy: | |
c906108c | 2631 | |
c5aa993b | 2632 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2633 | cause problems when the inferior is rerun, so we better get |
2634 | rid of it. */ | |
2635 | ||
2636 | case bp_watchpoint_scope: | |
2637 | ||
2638 | /* Also get rid of scope breakpoints. */ | |
2639 | ||
2640 | case bp_shlib_event: | |
2641 | ||
2642 | /* Also remove solib event breakpoints. Their addresses may | |
2643 | have changed since the last time we ran the program. | |
2644 | Actually we may now be debugging against different target; | |
2645 | and so the solib backend that installed this breakpoint may | |
2646 | not be used in by the target. E.g., | |
2647 | ||
2648 | (gdb) file prog-linux | |
2649 | (gdb) run # native linux target | |
2650 | ... | |
2651 | (gdb) kill | |
2652 | (gdb) file prog-win.exe | |
2653 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2654 | */ | |
c906108c | 2655 | |
c5aa993b JM |
2656 | delete_breakpoint (b); |
2657 | break; | |
c906108c | 2658 | |
c5aa993b JM |
2659 | case bp_watchpoint: |
2660 | case bp_hardware_watchpoint: | |
2661 | case bp_read_watchpoint: | |
2662 | case bp_access_watchpoint: | |
c906108c | 2663 | |
c5aa993b JM |
2664 | /* Likewise for watchpoints on local expressions. */ |
2665 | if (b->exp_valid_block != NULL) | |
2666 | delete_breakpoint (b); | |
967af18d | 2667 | else if (context == inf_starting) |
c860120c | 2668 | { |
4a64f543 MS |
2669 | /* Reset val field to force reread of starting value in |
2670 | insert_breakpoints. */ | |
c860120c PM |
2671 | if (b->val) |
2672 | value_free (b->val); | |
2673 | b->val = NULL; | |
fa4727a6 | 2674 | b->val_valid = 0; |
c860120c | 2675 | } |
c5aa993b JM |
2676 | break; |
2677 | default: | |
c5aa993b JM |
2678 | break; |
2679 | } | |
2680 | } | |
1c5cfe86 PA |
2681 | |
2682 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2683 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2684 | decref_bp_location (&bl); | |
1c5cfe86 | 2685 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2686 | } |
2687 | ||
6c95b8df PA |
2688 | /* These functions concern about actual breakpoints inserted in the |
2689 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2690 | we need to hop over the bkpt --- so we check for address space | |
2691 | match, not program space. */ | |
2692 | ||
c2c6d25f JM |
2693 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2694 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2695 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2696 | permanent breakpoint. | |
2697 | - When continuing from a location with an ordinary breakpoint, we | |
2698 | actually single step once before calling insert_breakpoints. | |
2699 | - When continuing from a localion with a permanent breakpoint, we | |
2700 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2701 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2702 | |
c2c6d25f | 2703 | enum breakpoint_here |
6c95b8df | 2704 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2705 | { |
35df4500 | 2706 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2707 | int any_breakpoint_here = 0; |
c906108c | 2708 | |
35df4500 | 2709 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2710 | { |
35df4500 TJB |
2711 | if (bl->loc_type != bp_loc_software_breakpoint |
2712 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2713 | continue; |
2714 | ||
35df4500 TJB |
2715 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2716 | if ((breakpoint_enabled (bl->owner) | |
2717 | || bl->owner->enable_state == bp_permanent) | |
2718 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2719 | aspace, pc)) |
075f6582 DJ |
2720 | { |
2721 | if (overlay_debugging | |
35df4500 TJB |
2722 | && section_is_overlay (bl->section) |
2723 | && !section_is_mapped (bl->section)) | |
075f6582 | 2724 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2725 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2726 | return permanent_breakpoint_here; |
2727 | else | |
2728 | any_breakpoint_here = 1; | |
2729 | } | |
2730 | } | |
c906108c | 2731 | |
c2c6d25f | 2732 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2733 | } |
2734 | ||
1c5cfe86 PA |
2735 | /* Return true if there's a moribund breakpoint at PC. */ |
2736 | ||
2737 | int | |
6c95b8df | 2738 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2739 | { |
2740 | struct bp_location *loc; | |
2741 | int ix; | |
2742 | ||
2743 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2744 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2745 | aspace, pc)) | |
1c5cfe86 PA |
2746 | return 1; |
2747 | ||
2748 | return 0; | |
2749 | } | |
c2c6d25f | 2750 | |
c36b740a | 2751 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2752 | inserted using regular breakpoint_chain / bp_location array |
2753 | mechanism. This does not check for single-step breakpoints, which | |
2754 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2755 | |
2756 | int | |
4a64f543 MS |
2757 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2758 | CORE_ADDR pc) | |
c906108c | 2759 | { |
35df4500 | 2760 | struct bp_location *bl, **blp_tmp; |
c906108c | 2761 | |
35df4500 | 2762 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2763 | { |
35df4500 TJB |
2764 | if (bl->loc_type != bp_loc_software_breakpoint |
2765 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2766 | continue; |
2767 | ||
35df4500 TJB |
2768 | if (bl->inserted |
2769 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2770 | aspace, pc)) |
075f6582 DJ |
2771 | { |
2772 | if (overlay_debugging | |
35df4500 TJB |
2773 | && section_is_overlay (bl->section) |
2774 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2775 | continue; /* unmapped overlay -- can't be a match */ |
2776 | else | |
2777 | return 1; | |
2778 | } | |
c5aa993b | 2779 | } |
c36b740a VP |
2780 | return 0; |
2781 | } | |
2782 | ||
2783 | /* Returns non-zero iff there's either regular breakpoint | |
2784 | or a single step breakpoint inserted at PC. */ | |
2785 | ||
2786 | int | |
6c95b8df | 2787 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2788 | { |
6c95b8df | 2789 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2790 | return 1; |
c906108c | 2791 | |
6c95b8df | 2792 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2793 | return 1; |
2794 | ||
c906108c SS |
2795 | return 0; |
2796 | } | |
2797 | ||
4fa8626c DJ |
2798 | /* This function returns non-zero iff there is a software breakpoint |
2799 | inserted at PC. */ | |
2800 | ||
2801 | int | |
6c95b8df | 2802 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2803 | { |
35df4500 | 2804 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 2805 | |
35df4500 | 2806 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 2807 | { |
35df4500 | 2808 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
2809 | continue; |
2810 | ||
35df4500 TJB |
2811 | if (bl->inserted |
2812 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 2813 | aspace, pc)) |
4fa8626c DJ |
2814 | { |
2815 | if (overlay_debugging | |
35df4500 TJB |
2816 | && section_is_overlay (bl->section) |
2817 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
2818 | continue; /* unmapped overlay -- can't be a match */ |
2819 | else | |
2820 | return 1; | |
2821 | } | |
2822 | } | |
2823 | ||
1aafd4da | 2824 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2825 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2826 | return 1; |
2827 | ||
4fa8626c DJ |
2828 | return 0; |
2829 | } | |
2830 | ||
9093389c PA |
2831 | int |
2832 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2833 | CORE_ADDR addr, ULONGEST len) | |
2834 | { | |
2835 | struct breakpoint *bpt; | |
2836 | ||
2837 | ALL_BREAKPOINTS (bpt) | |
2838 | { | |
2839 | struct bp_location *loc; | |
2840 | ||
2841 | if (bpt->type != bp_hardware_watchpoint | |
2842 | && bpt->type != bp_access_watchpoint) | |
2843 | continue; | |
2844 | ||
2845 | if (!breakpoint_enabled (bpt)) | |
2846 | continue; | |
2847 | ||
2848 | for (loc = bpt->loc; loc; loc = loc->next) | |
2849 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2850 | { | |
2851 | CORE_ADDR l, h; | |
2852 | ||
2853 | /* Check for intersection. */ | |
2854 | l = max (loc->address, addr); | |
2855 | h = min (loc->address + loc->length, addr + len); | |
2856 | if (l < h) | |
2857 | return 1; | |
2858 | } | |
2859 | } | |
2860 | return 0; | |
2861 | } | |
2862 | ||
075f6582 DJ |
2863 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2864 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2865 | |
2866 | int | |
6c95b8df PA |
2867 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2868 | ptid_t ptid) | |
c906108c | 2869 | { |
35df4500 | 2870 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 2871 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2872 | int thread = -1; |
4a306c9a | 2873 | int task = 0; |
a6f1cd96 | 2874 | |
35df4500 | 2875 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2876 | { |
35df4500 TJB |
2877 | if (bl->loc_type != bp_loc_software_breakpoint |
2878 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2879 | continue; |
2880 | ||
35df4500 TJB |
2881 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
2882 | if (!breakpoint_enabled (bl->owner) | |
2883 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
2884 | continue; |
2885 | ||
35df4500 | 2886 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
6c95b8df | 2887 | aspace, pc)) |
a6f1cd96 JB |
2888 | continue; |
2889 | ||
35df4500 | 2890 | if (bl->owner->thread != -1) |
075f6582 | 2891 | { |
a6f1cd96 JB |
2892 | /* This is a thread-specific breakpoint. Check that ptid |
2893 | matches that thread. If thread hasn't been computed yet, | |
2894 | it is now time to do so. */ | |
2895 | if (thread == -1) | |
2896 | thread = pid_to_thread_id (ptid); | |
35df4500 | 2897 | if (bl->owner->thread != thread) |
a6f1cd96 | 2898 | continue; |
075f6582 | 2899 | } |
a6f1cd96 | 2900 | |
35df4500 | 2901 | if (bl->owner->task != 0) |
4a306c9a JB |
2902 | { |
2903 | /* This is a task-specific breakpoint. Check that ptid | |
2904 | matches that task. If task hasn't been computed yet, | |
2905 | it is now time to do so. */ | |
2906 | if (task == 0) | |
2907 | task = ada_get_task_number (ptid); | |
35df4500 | 2908 | if (bl->owner->task != task) |
4a306c9a JB |
2909 | continue; |
2910 | } | |
2911 | ||
a6f1cd96 | 2912 | if (overlay_debugging |
35df4500 TJB |
2913 | && section_is_overlay (bl->section) |
2914 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
2915 | continue; /* unmapped overlay -- can't be a match */ |
2916 | ||
2917 | return 1; | |
c5aa993b | 2918 | } |
c906108c SS |
2919 | |
2920 | return 0; | |
2921 | } | |
c906108c | 2922 | \f |
c5aa993b | 2923 | |
c906108c SS |
2924 | /* bpstat stuff. External routines' interfaces are documented |
2925 | in breakpoint.h. */ | |
2926 | ||
2927 | int | |
fba45db2 | 2928 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2929 | { |
533be4dd | 2930 | return (ep->type == bp_catchpoint); |
c906108c SS |
2931 | } |
2932 | ||
f431efe5 PA |
2933 | /* Frees any storage that is part of a bpstat. Does not walk the |
2934 | 'next' chain. */ | |
2935 | ||
2936 | static void | |
198757a8 VP |
2937 | bpstat_free (bpstat bs) |
2938 | { | |
2939 | if (bs->old_val != NULL) | |
2940 | value_free (bs->old_val); | |
9add0f1b | 2941 | decref_counted_command_line (&bs->commands); |
f431efe5 | 2942 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
2943 | xfree (bs); |
2944 | } | |
2945 | ||
c906108c SS |
2946 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2947 | Also free any storage that is part of a bpstat. */ | |
2948 | ||
2949 | void | |
fba45db2 | 2950 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2951 | { |
2952 | bpstat p; | |
2953 | bpstat q; | |
2954 | ||
2955 | if (bsp == 0) | |
2956 | return; | |
2957 | p = *bsp; | |
2958 | while (p != NULL) | |
2959 | { | |
2960 | q = p->next; | |
198757a8 | 2961 | bpstat_free (p); |
c906108c SS |
2962 | p = q; |
2963 | } | |
2964 | *bsp = NULL; | |
2965 | } | |
2966 | ||
2967 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2968 | is part of the bpstat is copied as well. */ | |
2969 | ||
2970 | bpstat | |
fba45db2 | 2971 | bpstat_copy (bpstat bs) |
c906108c SS |
2972 | { |
2973 | bpstat p = NULL; | |
2974 | bpstat tmp; | |
2975 | bpstat retval = NULL; | |
2976 | ||
2977 | if (bs == NULL) | |
2978 | return bs; | |
2979 | ||
2980 | for (; bs != NULL; bs = bs->next) | |
2981 | { | |
2982 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2983 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2984 | incref_counted_command_line (tmp->commands); |
f431efe5 | 2985 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 2986 | if (bs->old_val != NULL) |
3c3185ac JK |
2987 | { |
2988 | tmp->old_val = value_copy (bs->old_val); | |
2989 | release_value (tmp->old_val); | |
2990 | } | |
31cc81e9 | 2991 | |
c906108c SS |
2992 | if (p == NULL) |
2993 | /* This is the first thing in the chain. */ | |
2994 | retval = tmp; | |
2995 | else | |
2996 | p->next = tmp; | |
2997 | p = tmp; | |
2998 | } | |
2999 | p->next = NULL; | |
3000 | return retval; | |
3001 | } | |
3002 | ||
4a64f543 | 3003 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3004 | |
3005 | bpstat | |
fba45db2 | 3006 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3007 | { |
c5aa993b JM |
3008 | if (bsp == NULL) |
3009 | return NULL; | |
c906108c | 3010 | |
c5aa993b JM |
3011 | for (; bsp != NULL; bsp = bsp->next) |
3012 | { | |
f431efe5 | 3013 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3014 | return bsp; |
3015 | } | |
c906108c SS |
3016 | return NULL; |
3017 | } | |
3018 | ||
4a64f543 MS |
3019 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3020 | stopped at. *BSP upon return is a bpstat which points to the | |
3021 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3022 | good for anything but further calls to bpstat_num). | |
3023 | ||
8671a17b PA |
3024 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3025 | Return -1 if stopped at a breakpoint that has been deleted since | |
3026 | we set it. | |
3027 | Return 1 otherwise. */ | |
c906108c SS |
3028 | |
3029 | int | |
8671a17b | 3030 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3031 | { |
3032 | struct breakpoint *b; | |
3033 | ||
3034 | if ((*bsp) == NULL) | |
3035 | return 0; /* No more breakpoint values */ | |
8671a17b | 3036 | |
4a64f543 MS |
3037 | /* We assume we'll never have several bpstats that correspond to a |
3038 | single breakpoint -- otherwise, this function might return the | |
3039 | same number more than once and this will look ugly. */ | |
f431efe5 | 3040 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3041 | *bsp = (*bsp)->next; |
3042 | if (b == NULL) | |
3043 | return -1; /* breakpoint that's been deleted since */ | |
3044 | ||
3045 | *num = b->number; /* We have its number */ | |
3046 | return 1; | |
c906108c SS |
3047 | } |
3048 | ||
3049 | /* Modify BS so that the actions will not be performed. */ | |
3050 | ||
3051 | void | |
fba45db2 | 3052 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3053 | { |
3054 | for (; bs != NULL; bs = bs->next) | |
3055 | { | |
9add0f1b | 3056 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3057 | bs->commands_left = NULL; |
c906108c SS |
3058 | if (bs->old_val != NULL) |
3059 | { | |
3060 | value_free (bs->old_val); | |
3061 | bs->old_val = NULL; | |
3062 | } | |
3063 | } | |
3064 | } | |
3065 | ||
f3b1572e PA |
3066 | /* Called when a command is about to proceed the inferior. */ |
3067 | ||
3068 | static void | |
3069 | breakpoint_about_to_proceed (void) | |
3070 | { | |
3071 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3072 | { | |
3073 | struct thread_info *tp = inferior_thread (); | |
3074 | ||
3075 | /* Allow inferior function calls in breakpoint commands to not | |
3076 | interrupt the command list. When the call finishes | |
3077 | successfully, the inferior will be standing at the same | |
3078 | breakpoint as if nothing happened. */ | |
16c381f0 | 3079 | if (tp->control.in_infcall) |
f3b1572e PA |
3080 | return; |
3081 | } | |
3082 | ||
3083 | breakpoint_proceeded = 1; | |
3084 | } | |
3085 | ||
4a64f543 MS |
3086 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3087 | command. */ | |
c906108c | 3088 | static void |
4efb68b1 | 3089 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3090 | { |
3091 | executing_breakpoint_commands = 0; | |
3092 | } | |
3093 | ||
4a64f543 MS |
3094 | /* Execute all the commands associated with all the breakpoints at |
3095 | this location. Any of these commands could cause the process to | |
3096 | proceed beyond this point, etc. We look out for such changes by | |
3097 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3098 | |
347bddb7 PA |
3099 | Returns true if a breakpoint command resumed the inferior. In that |
3100 | case, it is the caller's responsibility to recall it again with the | |
3101 | bpstat of the current thread. */ | |
3102 | ||
3103 | static int | |
3104 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3105 | { |
3106 | bpstat bs; | |
3107 | struct cleanup *old_chain; | |
347bddb7 | 3108 | int again = 0; |
c906108c SS |
3109 | |
3110 | /* Avoid endless recursion if a `source' command is contained | |
3111 | in bs->commands. */ | |
3112 | if (executing_breakpoint_commands) | |
347bddb7 | 3113 | return 0; |
c906108c SS |
3114 | |
3115 | executing_breakpoint_commands = 1; | |
3116 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3117 | ||
4a64f543 | 3118 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3119 | bs = *bsp; |
3120 | ||
3121 | breakpoint_proceeded = 0; | |
3122 | for (; bs != NULL; bs = bs->next) | |
3123 | { | |
9add0f1b | 3124 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3125 | struct command_line *cmd; |
3126 | struct cleanup *this_cmd_tree_chain; | |
3127 | ||
3128 | /* Take ownership of the BSP's command tree, if it has one. | |
3129 | ||
3130 | The command tree could legitimately contain commands like | |
3131 | 'step' and 'next', which call clear_proceed_status, which | |
3132 | frees stop_bpstat's command tree. To make sure this doesn't | |
3133 | free the tree we're executing out from under us, we need to | |
3134 | take ownership of the tree ourselves. Since a given bpstat's | |
3135 | commands are only executed once, we don't need to copy it; we | |
3136 | can clear the pointer in the bpstat, and make sure we free | |
3137 | the tree when we're done. */ | |
9add0f1b TT |
3138 | ccmd = bs->commands; |
3139 | bs->commands = NULL; | |
3140 | this_cmd_tree_chain | |
3141 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3142 | cmd = bs->commands_left; | |
3143 | bs->commands_left = NULL; | |
6c50ab1c | 3144 | |
c906108c SS |
3145 | while (cmd != NULL) |
3146 | { | |
3147 | execute_control_command (cmd); | |
3148 | ||
3149 | if (breakpoint_proceeded) | |
3150 | break; | |
3151 | else | |
3152 | cmd = cmd->next; | |
3153 | } | |
6c50ab1c JB |
3154 | |
3155 | /* We can free this command tree now. */ | |
3156 | do_cleanups (this_cmd_tree_chain); | |
3157 | ||
c906108c | 3158 | if (breakpoint_proceeded) |
32c1e744 VP |
3159 | { |
3160 | if (target_can_async_p ()) | |
347bddb7 PA |
3161 | /* If we are in async mode, then the target might be still |
3162 | running, not stopped at any breakpoint, so nothing for | |
3163 | us to do here -- just return to the event loop. */ | |
3164 | ; | |
32c1e744 VP |
3165 | else |
3166 | /* In sync mode, when execute_control_command returns | |
3167 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3168 | Breakpoint commands for that stop were not run, since |
3169 | execute_command does not run breakpoint commands -- | |
3170 | only command_line_handler does, but that one is not | |
3171 | involved in execution of breakpoint commands. So, we | |
3172 | can now execute breakpoint commands. It should be | |
3173 | noted that making execute_command do bpstat actions is | |
3174 | not an option -- in this case we'll have recursive | |
3175 | invocation of bpstat for each breakpoint with a | |
3176 | command, and can easily blow up GDB stack. Instead, we | |
3177 | return true, which will trigger the caller to recall us | |
3178 | with the new stop_bpstat. */ | |
3179 | again = 1; | |
3180 | break; | |
32c1e744 | 3181 | } |
c906108c | 3182 | } |
c2b8ed2c | 3183 | do_cleanups (old_chain); |
347bddb7 PA |
3184 | return again; |
3185 | } | |
3186 | ||
3187 | void | |
3188 | bpstat_do_actions (void) | |
3189 | { | |
3190 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3191 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3192 | && target_has_execution | |
3193 | && !is_exited (inferior_ptid) | |
3194 | && !is_executing (inferior_ptid)) | |
3195 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3196 | and only return when it is stopped at the next breakpoint, we | |
3197 | keep doing breakpoint actions until it returns false to | |
3198 | indicate the inferior was not resumed. */ | |
16c381f0 | 3199 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3200 | break; |
c906108c SS |
3201 | } |
3202 | ||
fa4727a6 DJ |
3203 | /* Print out the (old or new) value associated with a watchpoint. */ |
3204 | ||
3205 | static void | |
3206 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3207 | { | |
3208 | if (val == NULL) | |
3209 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3210 | else | |
79a45b7d TT |
3211 | { |
3212 | struct value_print_options opts; | |
3213 | get_user_print_options (&opts); | |
3214 | value_print (val, stream, &opts); | |
3215 | } | |
fa4727a6 DJ |
3216 | } |
3217 | ||
e514a9d6 | 3218 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3219 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3220 | by having it set different print_it values. |
3221 | ||
3222 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3223 | through the bpstat list of things causing this stop, calling the | |
4a64f543 | 3224 | print_bp_stop_message function on each one. The behavior of the |
e514a9d6 | 3225 | print_bp_stop_message function depends on the print_it field of |
4a64f543 | 3226 | bpstat. If such field so indicates, call this function here. |
e514a9d6 JM |
3227 | |
3228 | Return values from this routine (ultimately used by bpstat_print() | |
3229 | and normal_stop() to decide what to do): | |
3230 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3231 | don't print anything else. | |
3232 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3233 | that something to be followed by a location. | |
3234 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3235 | that something to be followed by a location. | |
3236 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3237 | analysis. */ | |
c906108c | 3238 | |
917317f4 | 3239 | static enum print_stop_action |
fba45db2 | 3240 | print_it_typical (bpstat bs) |
c906108c | 3241 | { |
f7545552 | 3242 | struct cleanup *old_chain; |
4f8d1dc6 | 3243 | struct breakpoint *b; |
89f9893c | 3244 | const struct bp_location *bl; |
8b93c638 | 3245 | struct ui_stream *stb; |
f7545552 TT |
3246 | int bp_temp = 0; |
3247 | enum print_stop_action result; | |
3248 | ||
c906108c SS |
3249 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3250 | which has since been deleted. */ | |
e514a9d6 | 3251 | if (bs->breakpoint_at == NULL) |
917317f4 | 3252 | return PRINT_UNKNOWN; |
2bdf28a0 | 3253 | |
f431efe5 PA |
3254 | gdb_assert (bs->bp_location_at != NULL); |
3255 | ||
3256 | bl = bs->bp_location_at; | |
3257 | b = bs->breakpoint_at; | |
c906108c | 3258 | |
f7545552 TT |
3259 | stb = ui_out_stream_new (uiout); |
3260 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3261 | ||
4f8d1dc6 | 3262 | switch (b->type) |
c906108c | 3263 | { |
e514a9d6 JM |
3264 | case bp_breakpoint: |
3265 | case bp_hardware_breakpoint: | |
f431efe5 | 3266 | bp_temp = b->disposition == disp_del; |
0d381245 VP |
3267 | if (bl->address != bl->requested_address) |
3268 | breakpoint_adjustment_warning (bl->requested_address, | |
3269 | bl->address, | |
4f8d1dc6 VP |
3270 | b->number, 1); |
3271 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3272 | if (bp_temp) |
3273 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3274 | else | |
3275 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3276 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3277 | { |
3278 | ui_out_field_string (uiout, "reason", | |
3279 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3280 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3281 | } | |
4f8d1dc6 | 3282 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3283 | ui_out_text (uiout, ", "); |
f7545552 | 3284 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3285 | break; |
3286 | ||
3287 | case bp_shlib_event: | |
917317f4 JM |
3288 | /* Did we stop because the user set the stop_on_solib_events |
3289 | variable? (If so, we report this as a generic, "Stopped due | |
3290 | to shlib event" message.) */ | |
a3f17187 | 3291 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3292 | result = PRINT_NOTHING; |
e514a9d6 JM |
3293 | break; |
3294 | ||
c4093a6a | 3295 | case bp_thread_event: |
4a64f543 | 3296 | /* Not sure how we will get here. |
c4093a6a | 3297 | GDB should not stop for these breakpoints. */ |
a3f17187 | 3298 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3299 | result = PRINT_NOTHING; |
c4093a6a JM |
3300 | break; |
3301 | ||
1900040c | 3302 | case bp_overlay_event: |
4a64f543 | 3303 | /* By analogy with the thread event, GDB should not stop for these. */ |
a3f17187 | 3304 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3305 | result = PRINT_NOTHING; |
1900040c MS |
3306 | break; |
3307 | ||
0fd8e87f UW |
3308 | case bp_longjmp_master: |
3309 | /* These should never be enabled. */ | |
3310 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3311 | result = PRINT_NOTHING; | |
3312 | break; | |
3313 | ||
aa7d318d TT |
3314 | case bp_std_terminate_master: |
3315 | /* These should never be enabled. */ | |
3316 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3317 | result = PRINT_NOTHING; | |
3318 | break; | |
3319 | ||
186c406b TT |
3320 | case bp_exception_master: |
3321 | /* These should never be enabled. */ | |
3322 | printf_filtered (_("Exception Master Breakpoint: gdb should not stop!\n")); | |
3323 | result = PRINT_NOTHING; | |
3324 | break; | |
3325 | ||
e514a9d6 JM |
3326 | case bp_watchpoint: |
3327 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3328 | annotate_watchpoint (b->number); |
3329 | if (ui_out_is_mi_like_p (uiout)) | |
3330 | ui_out_field_string | |
3331 | (uiout, "reason", | |
3332 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3333 | mention (b); | |
f7545552 | 3334 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3335 | ui_out_text (uiout, "\nOld value = "); |
3336 | watchpoint_value_print (bs->old_val, stb->stream); | |
3337 | ui_out_field_stream (uiout, "old", stb); | |
3338 | ui_out_text (uiout, "\nNew value = "); | |
3339 | watchpoint_value_print (b->val, stb->stream); | |
3340 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3341 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3342 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3343 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3344 | break; |
3345 | ||
3346 | case bp_read_watchpoint: | |
9dc5e2a9 | 3347 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3348 | ui_out_field_string |
3349 | (uiout, "reason", | |
3350 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3351 | mention (b); |
f7545552 | 3352 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3353 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3354 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3355 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3356 | ui_out_text (uiout, "\n"); |
f7545552 | 3357 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3358 | break; |
3359 | ||
3360 | case bp_access_watchpoint: | |
fa4727a6 | 3361 | if (bs->old_val != NULL) |
8b93c638 | 3362 | { |
4f8d1dc6 | 3363 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3364 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3365 | ui_out_field_string |
3366 | (uiout, "reason", | |
3367 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3368 | mention (b); |
f7545552 | 3369 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3370 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3371 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3372 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3373 | ui_out_text (uiout, "\nNew value = "); |
3374 | } | |
3375 | else | |
3376 | { | |
4f8d1dc6 | 3377 | mention (b); |
9dc5e2a9 | 3378 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3379 | ui_out_field_string |
3380 | (uiout, "reason", | |
3381 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3382 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3383 | ui_out_text (uiout, "\nValue = "); |
3384 | } | |
fa4727a6 | 3385 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3386 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3387 | ui_out_text (uiout, "\n"); |
f7545552 | 3388 | result = PRINT_UNKNOWN; |
e514a9d6 | 3389 | break; |
4ce44c66 | 3390 | |
e514a9d6 | 3391 | /* Fall through, we don't deal with these types of breakpoints |
4a64f543 | 3392 | here. */ |
e514a9d6 | 3393 | |
11cf8741 | 3394 | case bp_finish: |
9dc5e2a9 | 3395 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3396 | ui_out_field_string |
3397 | (uiout, "reason", | |
3398 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3399 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3400 | break; |
3401 | ||
e514a9d6 | 3402 | case bp_until: |
9dc5e2a9 | 3403 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3404 | ui_out_field_string |
3405 | (uiout, "reason", | |
3406 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3407 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3408 | break; |
3409 | ||
c2d11a7d | 3410 | case bp_none: |
e514a9d6 JM |
3411 | case bp_longjmp: |
3412 | case bp_longjmp_resume: | |
186c406b TT |
3413 | case bp_exception: |
3414 | case bp_exception_resume: | |
e514a9d6 | 3415 | case bp_step_resume: |
e514a9d6 JM |
3416 | case bp_watchpoint_scope: |
3417 | case bp_call_dummy: | |
aa7d318d | 3418 | case bp_std_terminate: |
1042e4c0 | 3419 | case bp_tracepoint: |
7a697b8d | 3420 | case bp_fast_tracepoint: |
4efc6507 | 3421 | case bp_jit_event: |
e514a9d6 | 3422 | default: |
f7545552 TT |
3423 | result = PRINT_UNKNOWN; |
3424 | break; | |
e514a9d6 | 3425 | } |
f7545552 TT |
3426 | |
3427 | do_cleanups (old_chain); | |
3428 | return result; | |
e514a9d6 JM |
3429 | } |
3430 | ||
3431 | /* Generic routine for printing messages indicating why we | |
4a64f543 | 3432 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3433 | 'print_it' in the bpstat structure. Under some circumstances we |
3434 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3435 | normal_stop(). */ |
e514a9d6 JM |
3436 | |
3437 | static enum print_stop_action | |
3438 | print_bp_stop_message (bpstat bs) | |
3439 | { | |
3440 | switch (bs->print_it) | |
3441 | { | |
3442 | case print_it_noop: | |
4a64f543 | 3443 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3444 | return PRINT_UNKNOWN; |
3445 | break; | |
3446 | ||
3447 | case print_it_done: | |
3448 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3449 | relevant messages. */ |
e514a9d6 JM |
3450 | return PRINT_SRC_AND_LOC; |
3451 | break; | |
3452 | ||
3453 | case print_it_normal: | |
4f8d1dc6 | 3454 | { |
f431efe5 PA |
3455 | struct breakpoint *b = bs->breakpoint_at; |
3456 | ||
4f8d1dc6 VP |
3457 | /* Normal case. Call the breakpoint's print_it method, or |
3458 | print_it_typical. */ | |
3459 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3460 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3461 | return b->ops->print_it (b); | |
3462 | else | |
3463 | return print_it_typical (bs); | |
3464 | } | |
3465 | break; | |
3086aeae | 3466 | |
e514a9d6 | 3467 | default: |
8e65ff28 | 3468 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3469 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3470 | break; |
c906108c | 3471 | } |
c906108c SS |
3472 | } |
3473 | ||
e514a9d6 JM |
3474 | /* Print a message indicating what happened. This is called from |
3475 | normal_stop(). The input to this routine is the head of the bpstat | |
3476 | list - a list of the eventpoints that caused this stop. This | |
3477 | routine calls the generic print routine for printing a message | |
3478 | about reasons for stopping. This will print (for example) the | |
3479 | "Breakpoint n," part of the output. The return value of this | |
3480 | routine is one of: | |
c906108c | 3481 | |
4a64f543 | 3482 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3483 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3484 | code to print the location. An example is |
c5aa993b JM |
3485 | "Breakpoint 1, " which should be followed by |
3486 | the location. | |
917317f4 | 3487 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3488 | to also print the location part of the message. |
3489 | An example is the catch/throw messages, which | |
4a64f543 | 3490 | don't require a location appended to the end. |
917317f4 | 3491 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3492 | further info to be printed. */ |
c906108c | 3493 | |
917317f4 | 3494 | enum print_stop_action |
fba45db2 | 3495 | bpstat_print (bpstat bs) |
c906108c SS |
3496 | { |
3497 | int val; | |
c5aa993b | 3498 | |
c906108c | 3499 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3500 | (Currently all watchpoints go on the bpstat whether hit or not. |
3501 | That probably could (should) be changed, provided care is taken | |
c906108c | 3502 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3503 | for (; bs; bs = bs->next) |
3504 | { | |
3505 | val = print_bp_stop_message (bs); | |
3506 | if (val == PRINT_SRC_ONLY | |
3507 | || val == PRINT_SRC_AND_LOC | |
3508 | || val == PRINT_NOTHING) | |
3509 | return val; | |
3510 | } | |
c906108c | 3511 | |
e514a9d6 | 3512 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3513 | with and nothing was printed. */ |
917317f4 | 3514 | return PRINT_UNKNOWN; |
c906108c SS |
3515 | } |
3516 | ||
4a64f543 MS |
3517 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3518 | used inside a catch_errors to evaluate the breakpoint condition. | |
3519 | The argument is a "struct expression *" that has been cast to a | |
3520 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3521 | |
3522 | static int | |
4efb68b1 | 3523 | breakpoint_cond_eval (void *exp) |
c906108c | 3524 | { |
278cd55f | 3525 | struct value *mark = value_mark (); |
c5aa993b | 3526 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3527 | |
c906108c SS |
3528 | value_free_to_mark (mark); |
3529 | return i; | |
3530 | } | |
3531 | ||
5760d0ab | 3532 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3533 | |
3534 | static bpstat | |
5760d0ab | 3535 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3536 | { |
3537 | bpstat bs; | |
3538 | ||
3539 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3540 | bs->next = NULL; |
3541 | **bs_link_pointer = bs; | |
3542 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3543 | bs->breakpoint_at = bl->owner; |
3544 | bs->bp_location_at = bl; | |
3545 | incref_bp_location (bl); | |
c906108c SS |
3546 | /* If the condition is false, etc., don't do the commands. */ |
3547 | bs->commands = NULL; | |
9add0f1b | 3548 | bs->commands_left = NULL; |
c906108c SS |
3549 | bs->old_val = NULL; |
3550 | bs->print_it = print_it_normal; | |
3551 | return bs; | |
3552 | } | |
3553 | \f | |
d983da9c DJ |
3554 | /* The target has stopped with waitstatus WS. Check if any hardware |
3555 | watchpoints have triggered, according to the target. */ | |
3556 | ||
3557 | int | |
3558 | watchpoints_triggered (struct target_waitstatus *ws) | |
3559 | { | |
d92524f1 | 3560 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3561 | CORE_ADDR addr; |
3562 | struct breakpoint *b; | |
3563 | ||
3564 | if (!stopped_by_watchpoint) | |
3565 | { | |
3566 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3567 | as not triggered. */ | |
3568 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3569 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3570 | b->watchpoint_triggered = watch_triggered_no; |
3571 | ||
3572 | return 0; | |
3573 | } | |
3574 | ||
3575 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3576 | { | |
3577 | /* We were stopped by a watchpoint, but we don't know where. | |
3578 | Mark all watchpoints as unknown. */ | |
3579 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3580 | if (is_hardware_watchpoint (b)) |
d983da9c DJ |
3581 | b->watchpoint_triggered = watch_triggered_unknown; |
3582 | ||
3583 | return stopped_by_watchpoint; | |
3584 | } | |
3585 | ||
3586 | /* The target could report the data address. Mark watchpoints | |
3587 | affected by this data address as triggered, and all others as not | |
3588 | triggered. */ | |
3589 | ||
3590 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3591 | if (is_hardware_watchpoint (b)) |
d983da9c | 3592 | { |
a5606eee | 3593 | struct bp_location *loc; |
d983da9c DJ |
3594 | |
3595 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3596 | for (loc = b->loc; loc; loc = loc->next) |
3597 | /* Exact match not required. Within range is | |
3598 | sufficient. */ | |
5009afc5 AS |
3599 | if (target_watchpoint_addr_within_range (¤t_target, |
3600 | addr, loc->address, | |
3601 | loc->length)) | |
a5606eee VP |
3602 | { |
3603 | b->watchpoint_triggered = watch_triggered_yes; | |
3604 | break; | |
3605 | } | |
d983da9c DJ |
3606 | } |
3607 | ||
3608 | return 1; | |
3609 | } | |
3610 | ||
c906108c SS |
3611 | /* Possible return values for watchpoint_check (this can't be an enum |
3612 | because of check_errors). */ | |
3613 | /* The watchpoint has been deleted. */ | |
3614 | #define WP_DELETED 1 | |
3615 | /* The value has changed. */ | |
3616 | #define WP_VALUE_CHANGED 2 | |
3617 | /* The value has not changed. */ | |
3618 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3619 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3620 | #define WP_IGNORE 4 | |
c906108c SS |
3621 | |
3622 | #define BP_TEMPFLAG 1 | |
3623 | #define BP_HARDWAREFLAG 2 | |
3624 | ||
4a64f543 MS |
3625 | /* Evaluate watchpoint condition expression and check if its value |
3626 | changed. | |
553e4c11 JB |
3627 | |
3628 | P should be a pointer to struct bpstat, but is defined as a void * | |
3629 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3630 | |
3631 | static int | |
4efb68b1 | 3632 | watchpoint_check (void *p) |
c906108c SS |
3633 | { |
3634 | bpstat bs = (bpstat) p; | |
3635 | struct breakpoint *b; | |
3636 | struct frame_info *fr; | |
3637 | int within_current_scope; | |
3638 | ||
f431efe5 | 3639 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3640 | gdb_assert (bs->breakpoint_at != NULL); |
f431efe5 | 3641 | b = bs->breakpoint_at; |
c906108c | 3642 | |
f6bc2008 PA |
3643 | /* If this is a local watchpoint, we only want to check if the |
3644 | watchpoint frame is in scope if the current thread is the thread | |
3645 | that was used to create the watchpoint. */ | |
3646 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3647 | return WP_IGNORE; |
f6bc2008 | 3648 | |
c906108c SS |
3649 | if (b->exp_valid_block == NULL) |
3650 | within_current_scope = 1; | |
3651 | else | |
3652 | { | |
edb3359d DJ |
3653 | struct frame_info *frame = get_current_frame (); |
3654 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3655 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3656 | ||
4a64f543 MS |
3657 | /* in_function_epilogue_p() returns a non-zero value if we're |
3658 | still in the function but the stack frame has already been | |
3659 | invalidated. Since we can't rely on the values of local | |
3660 | variables after the stack has been destroyed, we are treating | |
3661 | the watchpoint in that state as `not changed' without further | |
3662 | checking. Don't mark watchpoints as changed if the current | |
3663 | frame is in an epilogue - even if they are in some other | |
3664 | frame, our view of the stack is likely to be wrong and | |
3665 | frame_find_by_id could error out. */ | |
a0f49112 | 3666 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3667 | return WP_IGNORE; |
a0f49112 | 3668 | |
101dcfbe | 3669 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3670 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3671 | |
3672 | /* If we've gotten confused in the unwinder, we might have | |
3673 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3674 | if (within_current_scope) |
3675 | { | |
3676 | struct symbol *function; | |
3677 | ||
3678 | function = get_frame_function (fr); | |
3679 | if (function == NULL | |
3680 | || !contained_in (b->exp_valid_block, | |
3681 | SYMBOL_BLOCK_VALUE (function))) | |
3682 | within_current_scope = 0; | |
3683 | } | |
69fbadd5 | 3684 | |
edb3359d | 3685 | if (within_current_scope) |
c906108c SS |
3686 | /* If we end up stopping, the current frame will get selected |
3687 | in normal_stop. So this call to select_frame won't affect | |
3688 | the user. */ | |
0f7d239c | 3689 | select_frame (fr); |
c906108c | 3690 | } |
c5aa993b | 3691 | |
c906108c SS |
3692 | if (within_current_scope) |
3693 | { | |
4a64f543 MS |
3694 | /* We use value_{,free_to_}mark because it could be a *long* |
3695 | time before we return to the command level and call | |
3696 | free_all_values. We can't call free_all_values because we | |
3697 | might be in the middle of evaluating a function call. */ | |
c906108c | 3698 | |
0cf6dd15 | 3699 | int pc = 0; |
278cd55f | 3700 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3701 | struct value *new_val; |
3702 | ||
0cf6dd15 | 3703 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3704 | |
4a64f543 MS |
3705 | /* We use value_equal_contents instead of value_equal because |
3706 | the latter coerces an array to a pointer, thus comparing just | |
3707 | the address of the array instead of its contents. This is | |
3708 | not what we want. */ | |
fa4727a6 | 3709 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3710 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3711 | { |
fa4727a6 DJ |
3712 | if (new_val != NULL) |
3713 | { | |
3714 | release_value (new_val); | |
3715 | value_free_to_mark (mark); | |
3716 | } | |
c906108c SS |
3717 | bs->old_val = b->val; |
3718 | b->val = new_val; | |
fa4727a6 | 3719 | b->val_valid = 1; |
c906108c SS |
3720 | return WP_VALUE_CHANGED; |
3721 | } | |
3722 | else | |
3723 | { | |
60e1c644 | 3724 | /* Nothing changed. */ |
c906108c | 3725 | value_free_to_mark (mark); |
c906108c SS |
3726 | return WP_VALUE_NOT_CHANGED; |
3727 | } | |
3728 | } | |
3729 | else | |
3730 | { | |
3731 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3732 | if we temporarily ignored the watchpoint, then when |
3733 | we reenter the block in which it is valid it contains | |
3734 | garbage (in the case of a function, it may have two | |
3735 | garbage values, one before and one after the prologue). | |
3736 | So we can't even detect the first assignment to it and | |
3737 | watch after that (since the garbage may or may not equal | |
3738 | the first value assigned). */ | |
4ce44c66 JM |
3739 | /* We print all the stop information in print_it_typical(), but |
3740 | in this case, by the time we call print_it_typical() this bp | |
4a64f543 MS |
3741 | will be deleted already. So we have no choice but print the |
3742 | information here. */ | |
9dc5e2a9 | 3743 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3744 | ui_out_field_string |
3745 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3746 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3747 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3748 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3749 | which its expression is valid.\n"); | |
4ce44c66 | 3750 | |
c906108c | 3751 | if (b->related_breakpoint) |
60e1c644 PA |
3752 | { |
3753 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3754 | b->related_breakpoint->related_breakpoint = NULL; | |
3755 | b->related_breakpoint = NULL; | |
3756 | } | |
b5de0fa7 | 3757 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3758 | |
3759 | return WP_DELETED; | |
3760 | } | |
3761 | } | |
3762 | ||
18a18393 VP |
3763 | /* Return true if it looks like target has stopped due to hitting |
3764 | breakpoint location BL. This function does not check if we | |
3765 | should stop, only if BL explains the stop. */ | |
3766 | static int | |
6c95b8df PA |
3767 | bpstat_check_location (const struct bp_location *bl, |
3768 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3769 | { |
3770 | struct breakpoint *b = bl->owner; | |
3771 | ||
2bdf28a0 JK |
3772 | /* BL is from existing struct breakpoint. */ |
3773 | gdb_assert (b != NULL); | |
3774 | ||
e8595ef6 SS |
3775 | /* By definition, the inferior does not report stops at |
3776 | tracepoints. */ | |
d77f58be | 3777 | if (is_tracepoint (b)) |
e8595ef6 SS |
3778 | return 0; |
3779 | ||
cc60f2e3 | 3780 | if (!is_watchpoint (b) |
18a18393 | 3781 | && b->type != bp_hardware_breakpoint |
fe798b75 | 3782 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3783 | { |
6c95b8df PA |
3784 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3785 | aspace, bp_addr)) | |
18a18393 VP |
3786 | return 0; |
3787 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3788 | && section_is_overlay (bl->section) |
18a18393 VP |
3789 | && !section_is_mapped (bl->section)) |
3790 | return 0; | |
3791 | } | |
cc60f2e3 | 3792 | |
18a18393 VP |
3793 | /* Continuable hardware watchpoints are treated as non-existent if the |
3794 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3795 | some data address). Otherwise gdb won't stop on a break instruction | |
3796 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3797 | been defined. Also skip watchpoints which we know did not trigger | |
3798 | (did not match the data address). */ | |
cc60f2e3 PA |
3799 | |
3800 | if (is_hardware_watchpoint (b) | |
18a18393 VP |
3801 | && b->watchpoint_triggered == watch_triggered_no) |
3802 | return 0; | |
3803 | ||
3804 | if (b->type == bp_hardware_breakpoint) | |
3805 | { | |
3806 | if (bl->address != bp_addr) | |
3807 | return 0; | |
3808 | if (overlay_debugging /* unmapped overlay section */ | |
35df4500 | 3809 | && section_is_overlay (bl->section) |
18a18393 VP |
3810 | && !section_is_mapped (bl->section)) |
3811 | return 0; | |
3812 | } | |
ce78b96d | 3813 | |
ce78b96d JB |
3814 | if (b->type == bp_catchpoint) |
3815 | { | |
3816 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3817 | if (!b->ops->breakpoint_hit (b)) | |
3818 | return 0; | |
3819 | } | |
3820 | ||
18a18393 VP |
3821 | return 1; |
3822 | } | |
3823 | ||
3824 | /* If BS refers to a watchpoint, determine if the watched values | |
3825 | has actually changed, and we should stop. If not, set BS->stop | |
3826 | to 0. */ | |
3827 | static void | |
3828 | bpstat_check_watchpoint (bpstat bs) | |
3829 | { | |
2bdf28a0 JK |
3830 | const struct bp_location *bl; |
3831 | struct breakpoint *b; | |
3832 | ||
3833 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3834 | bl = bs->bp_location_at; |
2bdf28a0 | 3835 | gdb_assert (bl != NULL); |
f431efe5 | 3836 | b = bs->breakpoint_at; |
2bdf28a0 | 3837 | gdb_assert (b != NULL); |
18a18393 | 3838 | |
cc60f2e3 | 3839 | if (is_watchpoint (b)) |
18a18393 | 3840 | { |
18a18393 VP |
3841 | int must_check_value = 0; |
3842 | ||
3843 | if (b->type == bp_watchpoint) | |
3844 | /* For a software watchpoint, we must always check the | |
3845 | watched value. */ | |
3846 | must_check_value = 1; | |
3847 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3848 | /* We have a hardware watchpoint (read, write, or access) | |
3849 | and the target earlier reported an address watched by | |
3850 | this watchpoint. */ | |
3851 | must_check_value = 1; | |
3852 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3853 | && b->type == bp_hardware_watchpoint) | |
3854 | /* We were stopped by a hardware watchpoint, but the target could | |
3855 | not report the data address. We must check the watchpoint's | |
3856 | value. Access and read watchpoints are out of luck; without | |
3857 | a data address, we can't figure it out. */ | |
3858 | must_check_value = 1; | |
3859 | ||
3860 | if (must_check_value) | |
3861 | { | |
3862 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3863 | b->number); | |
3864 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3865 | int e = catch_errors (watchpoint_check, bs, message, | |
3866 | RETURN_MASK_ALL); | |
3867 | do_cleanups (cleanups); | |
3868 | switch (e) | |
3869 | { | |
3870 | case WP_DELETED: | |
3871 | /* We've already printed what needs to be printed. */ | |
3872 | bs->print_it = print_it_done; | |
3873 | /* Stop. */ | |
3874 | break; | |
60e1c644 PA |
3875 | case WP_IGNORE: |
3876 | bs->print_it = print_it_noop; | |
3877 | bs->stop = 0; | |
3878 | break; | |
18a18393 VP |
3879 | case WP_VALUE_CHANGED: |
3880 | if (b->type == bp_read_watchpoint) | |
3881 | { | |
85d721b8 PA |
3882 | /* There are two cases to consider here: |
3883 | ||
4a64f543 | 3884 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3885 | In that case, trust the target, and always report |
3886 | the watchpoint hit to the user. Even though | |
3887 | reads don't cause value changes, the value may | |
3888 | have changed since the last time it was read, and | |
3889 | since we're not trapping writes, we will not see | |
3890 | those, and as such we should ignore our notion of | |
3891 | old value. | |
3892 | ||
4a64f543 | 3893 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3894 | reads and writes. There are two ways this may |
3895 | happen: | |
3896 | ||
4a64f543 | 3897 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3898 | reads only, but can break on accesses (reads or |
3899 | writes), such as e.g., x86. We detect this case | |
3900 | at the time we try to insert read watchpoints. | |
3901 | ||
4a64f543 | 3902 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3903 | watchpoints, but, the user set an access or write |
3904 | watchpoint watching the same memory as this read | |
3905 | watchpoint. | |
3906 | ||
3907 | If we're watching memory writes as well as reads, | |
3908 | ignore watchpoint hits when we find that the | |
3909 | value hasn't changed, as reads don't cause | |
3910 | changes. This still gives false positives when | |
3911 | the program writes the same value to memory as | |
3912 | what there was already in memory (we will confuse | |
3913 | it for a read), but it's much better than | |
3914 | nothing. */ | |
3915 | ||
3916 | int other_write_watchpoint = 0; | |
3917 | ||
3918 | if (bl->watchpoint_type == hw_read) | |
3919 | { | |
3920 | struct breakpoint *other_b; | |
3921 | ||
3922 | ALL_BREAKPOINTS (other_b) | |
3923 | if ((other_b->type == bp_hardware_watchpoint | |
3924 | || other_b->type == bp_access_watchpoint) | |
3925 | && (other_b->watchpoint_triggered | |
3926 | == watch_triggered_yes)) | |
3927 | { | |
3928 | other_write_watchpoint = 1; | |
3929 | break; | |
3930 | } | |
3931 | } | |
3932 | ||
3933 | if (other_write_watchpoint | |
3934 | || bl->watchpoint_type == hw_access) | |
3935 | { | |
3936 | /* We're watching the same memory for writes, | |
3937 | and the value changed since the last time we | |
3938 | updated it, so this trap must be for a write. | |
3939 | Ignore it. */ | |
3940 | bs->print_it = print_it_noop; | |
3941 | bs->stop = 0; | |
3942 | } | |
18a18393 VP |
3943 | } |
3944 | break; | |
3945 | case WP_VALUE_NOT_CHANGED: | |
3946 | if (b->type == bp_hardware_watchpoint | |
3947 | || b->type == bp_watchpoint) | |
3948 | { | |
3949 | /* Don't stop: write watchpoints shouldn't fire if | |
3950 | the value hasn't changed. */ | |
3951 | bs->print_it = print_it_noop; | |
3952 | bs->stop = 0; | |
3953 | } | |
3954 | /* Stop. */ | |
3955 | break; | |
3956 | default: | |
3957 | /* Can't happen. */ | |
3958 | case 0: | |
3959 | /* Error from catch_errors. */ | |
3960 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3961 | if (b->related_breakpoint) | |
3962 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3963 | b->disposition = disp_del_at_next_stop; | |
3964 | /* We've already printed what needs to be printed. */ | |
3965 | bs->print_it = print_it_done; | |
3966 | break; | |
3967 | } | |
3968 | } | |
3969 | else /* must_check_value == 0 */ | |
3970 | { | |
3971 | /* This is a case where some watchpoint(s) triggered, but | |
3972 | not at the address of this watchpoint, or else no | |
3973 | watchpoint triggered after all. So don't print | |
3974 | anything for this watchpoint. */ | |
3975 | bs->print_it = print_it_noop; | |
3976 | bs->stop = 0; | |
3977 | } | |
3978 | } | |
3979 | } | |
3980 | ||
3981 | ||
3982 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3983 | of breakpoint referred to by BS. If we should not stop for this | |
3984 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 3985 | |
18a18393 VP |
3986 | static void |
3987 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3988 | { | |
3989 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
3990 | const struct bp_location *bl; |
3991 | struct breakpoint *b; | |
3992 | ||
3993 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3994 | bl = bs->bp_location_at; |
2bdf28a0 | 3995 | gdb_assert (bl != NULL); |
f431efe5 | 3996 | b = bs->breakpoint_at; |
2bdf28a0 | 3997 | gdb_assert (b != NULL); |
18a18393 VP |
3998 | |
3999 | if (frame_id_p (b->frame_id) | |
edb3359d | 4000 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4001 | bs->stop = 0; |
4002 | else if (bs->stop) | |
4003 | { | |
4004 | int value_is_zero = 0; | |
60e1c644 PA |
4005 | struct expression *cond; |
4006 | ||
60e1c644 PA |
4007 | if (is_watchpoint (b)) |
4008 | cond = b->cond_exp; | |
4009 | else | |
4010 | cond = bl->cond; | |
4011 | ||
f431efe5 | 4012 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4013 | { |
60e1c644 PA |
4014 | int within_current_scope = 1; |
4015 | ||
c5bc3a77 DJ |
4016 | /* We use value_mark and value_free_to_mark because it could |
4017 | be a long time before we return to the command level and | |
4018 | call free_all_values. We can't call free_all_values | |
4019 | because we might be in the middle of evaluating a | |
4020 | function call. */ | |
4021 | struct value *mark = value_mark (); | |
4022 | ||
edb3359d DJ |
4023 | /* Need to select the frame, with all that implies so that |
4024 | the conditions will have the right context. Because we | |
4025 | use the frame, we will not see an inlined function's | |
4026 | variables when we arrive at a breakpoint at the start | |
4027 | of the inlined function; the current frame will be the | |
4028 | call site. */ | |
60e1c644 PA |
4029 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
4030 | select_frame (get_current_frame ()); | |
4031 | else | |
4032 | { | |
4033 | struct frame_info *frame; | |
4034 | ||
4035 | /* For local watchpoint expressions, which particular | |
4036 | instance of a local is being watched matters, so we | |
4037 | keep track of the frame to evaluate the expression | |
4038 | in. To evaluate the condition however, it doesn't | |
4039 | really matter which instantiation of the function | |
4040 | where the condition makes sense triggers the | |
4041 | watchpoint. This allows an expression like "watch | |
4042 | global if q > 10" set in `func', catch writes to | |
4043 | global on all threads that call `func', or catch | |
4044 | writes on all recursive calls of `func' by a single | |
4045 | thread. We simply always evaluate the condition in | |
4046 | the innermost frame that's executing where it makes | |
4047 | sense to evaluate the condition. It seems | |
4048 | intuitive. */ | |
4049 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
4050 | if (frame != NULL) | |
4051 | select_frame (frame); | |
4052 | else | |
4053 | within_current_scope = 0; | |
4054 | } | |
4055 | if (within_current_scope) | |
4056 | value_is_zero | |
4057 | = catch_errors (breakpoint_cond_eval, cond, | |
4058 | "Error in testing breakpoint condition:\n", | |
4059 | RETURN_MASK_ALL); | |
4060 | else | |
4061 | { | |
4062 | warning (_("Watchpoint condition cannot be tested " | |
4063 | "in the current scope")); | |
4064 | /* If we failed to set the right context for this | |
4065 | watchpoint, unconditionally report it. */ | |
4066 | value_is_zero = 0; | |
4067 | } | |
4a64f543 | 4068 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4069 | value_free_to_mark (mark); |
18a18393 | 4070 | } |
60e1c644 PA |
4071 | |
4072 | if (cond && value_is_zero) | |
18a18393 VP |
4073 | { |
4074 | bs->stop = 0; | |
4075 | } | |
4076 | else if (b->thread != -1 && b->thread != thread_id) | |
4077 | { | |
4078 | bs->stop = 0; | |
4079 | } | |
4080 | else if (b->ignore_count > 0) | |
4081 | { | |
4082 | b->ignore_count--; | |
4083 | annotate_ignore_count_change (); | |
4084 | bs->stop = 0; | |
4a64f543 | 4085 | /* Increase the hit count even though we don't stop. */ |
18a18393 VP |
4086 | ++(b->hit_count); |
4087 | } | |
4088 | } | |
4089 | } | |
4090 | ||
4091 | ||
9709f61c | 4092 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4093 | BP_ADDR in thread PTID. |
c906108c | 4094 | |
d983da9c | 4095 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4096 | don't understand this stop. Result is a chain of bpstat's such |
4097 | that: | |
c906108c | 4098 | |
c5aa993b | 4099 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4100 | |
c5aa993b | 4101 | if we understand why we stopped, the result is not null. |
c906108c | 4102 | |
c5aa993b JM |
4103 | Each element of the chain refers to a particular breakpoint or |
4104 | watchpoint at which we have stopped. (We may have stopped for | |
4105 | several reasons concurrently.) | |
c906108c | 4106 | |
c5aa993b JM |
4107 | Each element of the chain has valid next, breakpoint_at, |
4108 | commands, FIXME??? fields. */ | |
c906108c SS |
4109 | |
4110 | bpstat | |
6c95b8df PA |
4111 | bpstat_stop_status (struct address_space *aspace, |
4112 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4113 | { |
0d381245 | 4114 | struct breakpoint *b = NULL; |
afe38095 | 4115 | struct bp_location *bl; |
20874c92 | 4116 | struct bp_location *loc; |
5760d0ab JK |
4117 | /* First item of allocated bpstat's. */ |
4118 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4119 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4120 | bpstat bs; |
20874c92 | 4121 | int ix; |
429374b8 | 4122 | int need_remove_insert; |
f431efe5 | 4123 | int removed_any; |
c906108c | 4124 | |
f431efe5 PA |
4125 | /* First, build the bpstat chain with locations that explain a |
4126 | target stop, while being careful to not set the target running, | |
4127 | as that may invalidate locations (in particular watchpoint | |
4128 | locations are recreated). Resuming will happen here with | |
4129 | breakpoint conditions or watchpoint expressions that include | |
4130 | inferior function calls. */ | |
c5aa993b | 4131 | |
429374b8 JK |
4132 | ALL_BREAKPOINTS (b) |
4133 | { | |
4134 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4135 | continue; | |
a5606eee | 4136 | |
429374b8 JK |
4137 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4138 | { | |
4a64f543 MS |
4139 | /* For hardware watchpoints, we look only at the first |
4140 | location. The watchpoint_check function will work on the | |
4141 | entire expression, not the individual locations. For | |
4142 | read watchpoints, the watchpoints_triggered function has | |
4143 | checked all locations already. */ | |
429374b8 JK |
4144 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4145 | break; | |
18a18393 | 4146 | |
429374b8 JK |
4147 | if (bl->shlib_disabled) |
4148 | continue; | |
c5aa993b | 4149 | |
429374b8 JK |
4150 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4151 | continue; | |
c5aa993b | 4152 | |
4a64f543 MS |
4153 | /* Come here if it's a watchpoint, or if the break address |
4154 | matches. */ | |
c5aa993b | 4155 | |
4a64f543 MS |
4156 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4157 | explain stop. */ | |
c5aa993b | 4158 | |
f431efe5 PA |
4159 | /* Assume we stop. Should we find a watchpoint that is not |
4160 | actually triggered, or if the condition of the breakpoint | |
4161 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4162 | bs->stop = 1; |
4163 | bs->print = 1; | |
d983da9c | 4164 | |
f431efe5 PA |
4165 | /* If this is a scope breakpoint, mark the associated |
4166 | watchpoint as triggered so that we will handle the | |
4167 | out-of-scope event. We'll get to the watchpoint next | |
4168 | iteration. */ | |
4169 | if (b->type == bp_watchpoint_scope) | |
4170 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
4171 | } | |
4172 | } | |
4173 | ||
4174 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4175 | { | |
4176 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, | |
4177 | aspace, bp_addr)) | |
4178 | { | |
5760d0ab | 4179 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4180 | /* For hits of moribund locations, we should just proceed. */ |
4181 | bs->stop = 0; | |
4182 | bs->print = 0; | |
4183 | bs->print_it = print_it_noop; | |
4184 | } | |
4185 | } | |
4186 | ||
f431efe5 PA |
4187 | /* Now go through the locations that caused the target to stop, and |
4188 | check whether we're interested in reporting this stop to higher | |
4189 | layers, or whether we should resume the target transparently. */ | |
4190 | ||
4191 | removed_any = 0; | |
4192 | ||
5760d0ab | 4193 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4194 | { |
4195 | if (!bs->stop) | |
4196 | continue; | |
4197 | ||
4198 | bpstat_check_watchpoint (bs); | |
4199 | if (!bs->stop) | |
4200 | continue; | |
4201 | ||
4202 | b = bs->breakpoint_at; | |
18a18393 | 4203 | |
429374b8 | 4204 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d | 4205 | || b->type == bp_longjmp_master |
186c406b TT |
4206 | || b->type == bp_std_terminate_master |
4207 | || b->type == bp_exception_master) | |
429374b8 JK |
4208 | /* We do not stop for these. */ |
4209 | bs->stop = 0; | |
4210 | else | |
4211 | bpstat_check_breakpoint_conditions (bs, ptid); | |
f431efe5 | 4212 | |
429374b8 JK |
4213 | if (bs->stop) |
4214 | { | |
4215 | ++(b->hit_count); | |
c906108c | 4216 | |
4a64f543 | 4217 | /* We will stop here. */ |
429374b8 JK |
4218 | if (b->disposition == disp_disable) |
4219 | { | |
4220 | if (b->enable_state != bp_permanent) | |
4221 | b->enable_state = bp_disabled; | |
f431efe5 | 4222 | removed_any = 1; |
429374b8 JK |
4223 | } |
4224 | if (b->silent) | |
4225 | bs->print = 0; | |
4226 | bs->commands = b->commands; | |
9add0f1b TT |
4227 | incref_counted_command_line (bs->commands); |
4228 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4229 | if (bs->commands_left | |
4230 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4231 | || (xdb_commands | |
4232 | && strcmp ("Q", | |
4233 | bs->commands_left->line) == 0))) | |
429374b8 | 4234 | { |
9add0f1b | 4235 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4236 | bs->print = 0; |
4237 | } | |
429374b8 JK |
4238 | } |
4239 | ||
4240 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4241 | if (bs->stop == 0 || bs->print == 0) | |
4242 | bs->print_it = print_it_noop; | |
429374b8 | 4243 | } |
876fa593 | 4244 | |
d983da9c DJ |
4245 | /* If we aren't stopping, the value of some hardware watchpoint may |
4246 | not have changed, but the intermediate memory locations we are | |
4247 | watching may have. Don't bother if we're stopping; this will get | |
4248 | done later. */ | |
d832cb68 | 4249 | need_remove_insert = 0; |
5760d0ab JK |
4250 | if (! bpstat_causes_stop (bs_head)) |
4251 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4252 | if (!bs->stop |
f431efe5 PA |
4253 | && bs->breakpoint_at |
4254 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4255 | { |
4a64f543 | 4256 | update_watchpoint (bs->breakpoint_at, 0 /* don't reparse. */); |
d832cb68 | 4257 | need_remove_insert = 1; |
d983da9c DJ |
4258 | } |
4259 | ||
d832cb68 | 4260 | if (need_remove_insert) |
2d134ed3 | 4261 | update_global_location_list (1); |
f431efe5 PA |
4262 | else if (removed_any) |
4263 | update_global_location_list (0); | |
d832cb68 | 4264 | |
5760d0ab | 4265 | return bs_head; |
c906108c | 4266 | } |
628fe4e4 JK |
4267 | |
4268 | static void | |
4269 | handle_jit_event (void) | |
4270 | { | |
4271 | struct frame_info *frame; | |
4272 | struct gdbarch *gdbarch; | |
4273 | ||
4274 | /* Switch terminal for any messages produced by | |
4275 | breakpoint_re_set. */ | |
4276 | target_terminal_ours_for_output (); | |
4277 | ||
4278 | frame = get_current_frame (); | |
4279 | gdbarch = get_frame_arch (frame); | |
4280 | ||
4281 | jit_event_handler (gdbarch); | |
4282 | ||
4283 | target_terminal_inferior (); | |
4284 | } | |
4285 | ||
4286 | /* Prepare WHAT final decision for infrun. */ | |
4287 | ||
4288 | /* Decide what infrun needs to do with this bpstat. */ | |
4289 | ||
c906108c | 4290 | struct bpstat_what |
fba45db2 | 4291 | bpstat_what (bpstat bs) |
c906108c | 4292 | { |
c906108c | 4293 | struct bpstat_what retval; |
628fe4e4 JK |
4294 | /* We need to defer calling `solib_add', as adding new symbols |
4295 | resets breakpoints, which in turn deletes breakpoint locations, | |
4296 | and hence may clear unprocessed entries in the BS chain. */ | |
4297 | int shlib_event = 0; | |
4298 | int jit_event = 0; | |
c906108c | 4299 | |
628fe4e4 | 4300 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4301 | retval.call_dummy = STOP_NONE; |
186c406b | 4302 | retval.is_longjmp = 0; |
628fe4e4 | 4303 | |
c906108c SS |
4304 | for (; bs != NULL; bs = bs->next) |
4305 | { | |
628fe4e4 JK |
4306 | /* Extract this BS's action. After processing each BS, we check |
4307 | if its action overrides all we've seem so far. */ | |
4308 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4309 | enum bptype bptype; | |
4310 | ||
c906108c | 4311 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4312 | { |
4313 | /* I suspect this can happen if it was a momentary | |
4314 | breakpoint which has since been deleted. */ | |
4315 | bptype = bp_none; | |
4316 | } | |
f431efe5 | 4317 | else if (bs->breakpoint_at == NULL) |
628fe4e4 | 4318 | bptype = bp_none; |
20874c92 | 4319 | else |
f431efe5 | 4320 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
4321 | |
4322 | switch (bptype) | |
c906108c SS |
4323 | { |
4324 | case bp_none: | |
628fe4e4 | 4325 | break; |
c906108c SS |
4326 | case bp_breakpoint: |
4327 | case bp_hardware_breakpoint: | |
4328 | case bp_until: | |
4329 | case bp_finish: | |
4330 | if (bs->stop) | |
4331 | { | |
4332 | if (bs->print) | |
628fe4e4 | 4333 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4334 | else |
628fe4e4 | 4335 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4336 | } |
4337 | else | |
628fe4e4 | 4338 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4339 | break; |
4340 | case bp_watchpoint: | |
4341 | case bp_hardware_watchpoint: | |
4342 | case bp_read_watchpoint: | |
4343 | case bp_access_watchpoint: | |
4344 | if (bs->stop) | |
4345 | { | |
4346 | if (bs->print) | |
628fe4e4 | 4347 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4348 | else |
628fe4e4 | 4349 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4350 | } |
4351 | else | |
628fe4e4 JK |
4352 | { |
4353 | /* There was a watchpoint, but we're not stopping. | |
4354 | This requires no further action. */ | |
4355 | } | |
c906108c SS |
4356 | break; |
4357 | case bp_longjmp: | |
186c406b | 4358 | case bp_exception: |
628fe4e4 | 4359 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4360 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4361 | break; |
4362 | case bp_longjmp_resume: | |
186c406b | 4363 | case bp_exception_resume: |
628fe4e4 | 4364 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4365 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4366 | break; |
4367 | case bp_step_resume: | |
4368 | if (bs->stop) | |
628fe4e4 JK |
4369 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4370 | else | |
c906108c | 4371 | { |
628fe4e4 JK |
4372 | /* It is for the wrong frame. */ |
4373 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4374 | } |
c906108c | 4375 | break; |
c906108c | 4376 | case bp_watchpoint_scope: |
c4093a6a | 4377 | case bp_thread_event: |
1900040c | 4378 | case bp_overlay_event: |
0fd8e87f | 4379 | case bp_longjmp_master: |
aa7d318d | 4380 | case bp_std_terminate_master: |
186c406b | 4381 | case bp_exception_master: |
628fe4e4 | 4382 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4383 | break; |
ce78b96d | 4384 | case bp_catchpoint: |
c5aa993b JM |
4385 | if (bs->stop) |
4386 | { | |
4387 | if (bs->print) | |
628fe4e4 | 4388 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4389 | else |
628fe4e4 | 4390 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4391 | } |
4392 | else | |
628fe4e4 JK |
4393 | { |
4394 | /* There was a catchpoint, but we're not stopping. | |
4395 | This requires no further action. */ | |
4396 | } | |
4397 | break; | |
4398 | case bp_shlib_event: | |
4399 | shlib_event = 1; | |
4400 | ||
4401 | /* If requested, stop when the dynamic linker notifies GDB | |
4402 | of events. This allows the user to get control and place | |
4403 | breakpoints in initializer routines for dynamically | |
4404 | loaded objects (among other things). */ | |
4405 | if (stop_on_solib_events) | |
4406 | this_action = BPSTAT_WHAT_STOP_NOISY; | |
4407 | else | |
4408 | this_action = BPSTAT_WHAT_SINGLE; | |
4409 | break; | |
4410 | case bp_jit_event: | |
4411 | jit_event = 1; | |
4412 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4413 | break; |
c906108c | 4414 | case bp_call_dummy: |
53a5351d JM |
4415 | /* Make sure the action is stop (silent or noisy), |
4416 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4417 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4418 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4419 | break; |
4420 | case bp_std_terminate: | |
4421 | /* Make sure the action is stop (silent or noisy), | |
4422 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4423 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4424 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4425 | break; |
1042e4c0 | 4426 | case bp_tracepoint: |
7a697b8d | 4427 | case bp_fast_tracepoint: |
0fb4aa4b | 4428 | case bp_static_tracepoint: |
1042e4c0 SS |
4429 | /* Tracepoint hits should not be reported back to GDB, and |
4430 | if one got through somehow, it should have been filtered | |
4431 | out already. */ | |
4432 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4433 | _("bpstat_what: tracepoint encountered")); |
628fe4e4 JK |
4434 | default: |
4435 | internal_error (__FILE__, __LINE__, | |
4436 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4437 | } |
628fe4e4 JK |
4438 | |
4439 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4440 | } |
628fe4e4 JK |
4441 | |
4442 | if (shlib_event) | |
4443 | { | |
4444 | if (debug_infrun) | |
4445 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4446 | ||
4447 | /* Check for any newly added shared libraries if we're supposed | |
4448 | to be adding them automatically. */ | |
4449 | ||
4450 | /* Switch terminal for any messages produced by | |
4451 | breakpoint_re_set. */ | |
4452 | target_terminal_ours_for_output (); | |
4453 | ||
4454 | #ifdef SOLIB_ADD | |
4455 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4456 | #else | |
4457 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4458 | #endif | |
4459 | ||
4460 | target_terminal_inferior (); | |
4461 | } | |
4462 | ||
4463 | if (jit_event) | |
4464 | { | |
4465 | if (debug_infrun) | |
4466 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4467 | ||
4468 | handle_jit_event (); | |
4469 | } | |
4470 | ||
c906108c SS |
4471 | return retval; |
4472 | } | |
4473 | ||
4474 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4475 | without hardware support). This isn't related to a specific bpstat, | |
4476 | just to things like whether watchpoints are set. */ | |
4477 | ||
c5aa993b | 4478 | int |
fba45db2 | 4479 | bpstat_should_step (void) |
c906108c SS |
4480 | { |
4481 | struct breakpoint *b; | |
cc59ec59 | 4482 | |
c906108c | 4483 | ALL_BREAKPOINTS (b) |
717a8278 | 4484 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4485 | return 1; |
c906108c SS |
4486 | return 0; |
4487 | } | |
4488 | ||
67822962 PA |
4489 | int |
4490 | bpstat_causes_stop (bpstat bs) | |
4491 | { | |
4492 | for (; bs != NULL; bs = bs->next) | |
4493 | if (bs->stop) | |
4494 | return 1; | |
4495 | ||
4496 | return 0; | |
4497 | } | |
4498 | ||
c906108c | 4499 | \f |
c5aa993b | 4500 | |
859825b8 JK |
4501 | /* Print the LOC location out of the list of B->LOC locations. */ |
4502 | ||
0d381245 VP |
4503 | static void print_breakpoint_location (struct breakpoint *b, |
4504 | struct bp_location *loc, | |
4505 | char *wrap_indent, | |
4506 | struct ui_stream *stb) | |
4507 | { | |
6c95b8df PA |
4508 | struct cleanup *old_chain = save_current_program_space (); |
4509 | ||
859825b8 JK |
4510 | if (loc != NULL && loc->shlib_disabled) |
4511 | loc = NULL; | |
4512 | ||
6c95b8df PA |
4513 | if (loc != NULL) |
4514 | set_current_program_space (loc->pspace); | |
4515 | ||
859825b8 | 4516 | if (b->source_file && loc) |
0d381245 VP |
4517 | { |
4518 | struct symbol *sym | |
4519 | = find_pc_sect_function (loc->address, loc->section); | |
4520 | if (sym) | |
4521 | { | |
4522 | ui_out_text (uiout, "in "); | |
4523 | ui_out_field_string (uiout, "func", | |
4524 | SYMBOL_PRINT_NAME (sym)); | |
4525 | ui_out_wrap_hint (uiout, wrap_indent); | |
4526 | ui_out_text (uiout, " at "); | |
4527 | } | |
4528 | ui_out_field_string (uiout, "file", b->source_file); | |
4529 | ui_out_text (uiout, ":"); | |
4530 | ||
4531 | if (ui_out_is_mi_like_p (uiout)) | |
4532 | { | |
4533 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4534 | char *fullname = symtab_to_fullname (sal.symtab); | |
4535 | ||
4536 | if (fullname) | |
4537 | ui_out_field_string (uiout, "fullname", fullname); | |
4538 | } | |
4539 | ||
4540 | ui_out_field_int (uiout, "line", b->line_number); | |
4541 | } | |
859825b8 | 4542 | else if (loc) |
0d381245 | 4543 | { |
22e722e1 DJ |
4544 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4545 | demangle, ""); | |
0d381245 VP |
4546 | ui_out_field_stream (uiout, "at", stb); |
4547 | } | |
859825b8 JK |
4548 | else |
4549 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4550 | |
4551 | do_cleanups (old_chain); | |
0d381245 VP |
4552 | } |
4553 | ||
269b11a2 PA |
4554 | static const char * |
4555 | bptype_string (enum bptype type) | |
c906108c | 4556 | { |
c4093a6a JM |
4557 | struct ep_type_description |
4558 | { | |
4559 | enum bptype type; | |
4560 | char *description; | |
4561 | }; | |
4562 | static struct ep_type_description bptypes[] = | |
c906108c | 4563 | { |
c5aa993b JM |
4564 | {bp_none, "?deleted?"}, |
4565 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4566 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4567 | {bp_until, "until"}, |
4568 | {bp_finish, "finish"}, | |
4569 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4570 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4571 | {bp_read_watchpoint, "read watchpoint"}, |
4572 | {bp_access_watchpoint, "acc watchpoint"}, | |
4573 | {bp_longjmp, "longjmp"}, | |
4574 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4575 | {bp_exception, "exception"}, |
4576 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4577 | {bp_step_resume, "step resume"}, |
c5aa993b JM |
4578 | {bp_watchpoint_scope, "watchpoint scope"}, |
4579 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4580 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4581 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4582 | {bp_thread_event, "thread events"}, |
1900040c | 4583 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4584 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4585 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4586 | {bp_exception_master, "exception master"}, |
ce78b96d | 4587 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4588 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4589 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4590 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4591 | {bp_jit_event, "jit events"}, |
c5aa993b | 4592 | }; |
269b11a2 PA |
4593 | |
4594 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4595 | || ((int) type != bptypes[(int) type].type)) | |
4596 | internal_error (__FILE__, __LINE__, | |
4597 | _("bptypes table does not describe type #%d."), | |
4598 | (int) type); | |
4599 | ||
4600 | return bptypes[(int) type].description; | |
4601 | } | |
4602 | ||
4603 | /* Print B to gdb_stdout. */ | |
4604 | ||
4605 | static void | |
4606 | print_one_breakpoint_location (struct breakpoint *b, | |
4607 | struct bp_location *loc, | |
4608 | int loc_number, | |
4609 | struct bp_location **last_loc, | |
4610 | int print_address_bits, | |
4611 | int allflag) | |
4612 | { | |
4613 | struct command_line *l; | |
c2c6d25f | 4614 | static char bpenables[] = "nynny"; |
c906108c | 4615 | char wrap_indent[80]; |
8b93c638 JM |
4616 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4617 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4618 | struct cleanup *bkpt_chain; |
c906108c | 4619 | |
0d381245 VP |
4620 | int header_of_multiple = 0; |
4621 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4622 | struct value_print_options opts; |
4623 | ||
4624 | get_user_print_options (&opts); | |
0d381245 VP |
4625 | |
4626 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4627 | /* See comment in print_one_breakpoint concerning treatment of |
4628 | breakpoints with single disabled location. */ | |
0d381245 VP |
4629 | if (loc == NULL |
4630 | && (b->loc != NULL | |
4631 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4632 | header_of_multiple = 1; | |
4633 | if (loc == NULL) | |
4634 | loc = b->loc; | |
4635 | ||
c4093a6a | 4636 | annotate_record (); |
3b31d625 | 4637 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4638 | |
4639 | /* 1 */ | |
4640 | annotate_field (0); | |
0d381245 VP |
4641 | if (part_of_multiple) |
4642 | { | |
4643 | char *formatted; | |
0c6773c1 | 4644 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4645 | ui_out_field_string (uiout, "number", formatted); |
4646 | xfree (formatted); | |
4647 | } | |
4648 | else | |
4649 | { | |
4650 | ui_out_field_int (uiout, "number", b->number); | |
4651 | } | |
c4093a6a JM |
4652 | |
4653 | /* 2 */ | |
4654 | annotate_field (1); | |
0d381245 VP |
4655 | if (part_of_multiple) |
4656 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4657 | else |
4658 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4659 | |
4660 | /* 3 */ | |
4661 | annotate_field (2); | |
0d381245 VP |
4662 | if (part_of_multiple) |
4663 | ui_out_field_skip (uiout, "disp"); | |
4664 | else | |
2cec12e5 | 4665 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4666 | |
c4093a6a JM |
4667 | |
4668 | /* 4 */ | |
4669 | annotate_field (3); | |
0d381245 | 4670 | if (part_of_multiple) |
54e52265 | 4671 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4672 | else |
4a64f543 MS |
4673 | ui_out_field_fmt (uiout, "enabled", "%c", |
4674 | bpenables[(int) b->enable_state]); | |
54e52265 | 4675 | ui_out_spaces (uiout, 2); |
0d381245 | 4676 | |
c4093a6a JM |
4677 | |
4678 | /* 5 and 6 */ | |
4679 | strcpy (wrap_indent, " "); | |
79a45b7d | 4680 | if (opts.addressprint) |
75ac9d7b | 4681 | { |
a6d9a66e | 4682 | if (print_address_bits <= 32) |
75ac9d7b MS |
4683 | strcat (wrap_indent, " "); |
4684 | else | |
4685 | strcat (wrap_indent, " "); | |
4686 | } | |
c906108c | 4687 | |
3086aeae | 4688 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4689 | { |
4a64f543 MS |
4690 | /* Although the print_one can possibly print all locations, |
4691 | calling it here is not likely to get any nice result. So, | |
4692 | make sure there's just one location. */ | |
0d381245 | 4693 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4694 | b->ops->print_one (b, last_loc); |
0d381245 | 4695 | } |
3086aeae DJ |
4696 | else |
4697 | switch (b->type) | |
4698 | { | |
4699 | case bp_none: | |
4700 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4701 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4702 | break; |
c906108c | 4703 | |
3086aeae DJ |
4704 | case bp_watchpoint: |
4705 | case bp_hardware_watchpoint: | |
4706 | case bp_read_watchpoint: | |
4707 | case bp_access_watchpoint: | |
4708 | /* Field 4, the address, is omitted (which makes the columns | |
4709 | not line up too nicely with the headers, but the effect | |
4710 | is relatively readable). */ | |
79a45b7d | 4711 | if (opts.addressprint) |
3086aeae DJ |
4712 | ui_out_field_skip (uiout, "addr"); |
4713 | annotate_field (5); | |
fa8a61dc | 4714 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4715 | break; |
4716 | ||
3086aeae DJ |
4717 | case bp_breakpoint: |
4718 | case bp_hardware_breakpoint: | |
4719 | case bp_until: | |
4720 | case bp_finish: | |
4721 | case bp_longjmp: | |
4722 | case bp_longjmp_resume: | |
186c406b TT |
4723 | case bp_exception: |
4724 | case bp_exception_resume: | |
3086aeae | 4725 | case bp_step_resume: |
3086aeae DJ |
4726 | case bp_watchpoint_scope: |
4727 | case bp_call_dummy: | |
aa7d318d | 4728 | case bp_std_terminate: |
3086aeae DJ |
4729 | case bp_shlib_event: |
4730 | case bp_thread_event: | |
4731 | case bp_overlay_event: | |
0fd8e87f | 4732 | case bp_longjmp_master: |
aa7d318d | 4733 | case bp_std_terminate_master: |
186c406b | 4734 | case bp_exception_master: |
1042e4c0 | 4735 | case bp_tracepoint: |
7a697b8d | 4736 | case bp_fast_tracepoint: |
0fb4aa4b | 4737 | case bp_static_tracepoint: |
4efc6507 | 4738 | case bp_jit_event: |
79a45b7d | 4739 | if (opts.addressprint) |
3086aeae DJ |
4740 | { |
4741 | annotate_field (4); | |
54e52265 | 4742 | if (header_of_multiple) |
0d381245 | 4743 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4744 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4745 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4746 | else |
5af949e3 UW |
4747 | ui_out_field_core_addr (uiout, "addr", |
4748 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4749 | } |
4750 | annotate_field (5); | |
0d381245 VP |
4751 | if (!header_of_multiple) |
4752 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4753 | if (b->loc) | |
a6d9a66e | 4754 | *last_loc = b->loc; |
3086aeae DJ |
4755 | break; |
4756 | } | |
c906108c | 4757 | |
6c95b8df PA |
4758 | |
4759 | /* For backward compatibility, don't display inferiors unless there | |
4760 | are several. */ | |
4761 | if (loc != NULL | |
4762 | && !header_of_multiple | |
4763 | && (allflag | |
4764 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4765 | && (number_of_program_spaces () > 1 | |
4766 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4767 | /* LOC is for existing B, it cannot be in |
4768 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4769 | && loc->owner->type != bp_catchpoint))) |
4770 | { | |
4771 | struct inferior *inf; | |
4772 | int first = 1; | |
4773 | ||
4774 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4775 | { | |
4776 | if (inf->pspace == loc->pspace) | |
4777 | { | |
4778 | if (first) | |
4779 | { | |
4780 | first = 0; | |
4781 | ui_out_text (uiout, " inf "); | |
4782 | } | |
4783 | else | |
4784 | ui_out_text (uiout, ", "); | |
4785 | ui_out_text (uiout, plongest (inf->num)); | |
4786 | } | |
4787 | } | |
4788 | } | |
4789 | ||
4a306c9a | 4790 | if (!part_of_multiple) |
c4093a6a | 4791 | { |
4a306c9a JB |
4792 | if (b->thread != -1) |
4793 | { | |
4794 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4795 | "stop only in" line a little further down. */ |
4a306c9a JB |
4796 | ui_out_text (uiout, " thread "); |
4797 | ui_out_field_int (uiout, "thread", b->thread); | |
4798 | } | |
4799 | else if (b->task != 0) | |
4800 | { | |
4801 | ui_out_text (uiout, " task "); | |
4802 | ui_out_field_int (uiout, "task", b->task); | |
4803 | } | |
c4093a6a JM |
4804 | } |
4805 | ||
8b93c638 | 4806 | ui_out_text (uiout, "\n"); |
c4093a6a | 4807 | |
0fb4aa4b PA |
4808 | if (!part_of_multiple && b->static_trace_marker_id) |
4809 | { | |
4810 | gdb_assert (b->type == bp_static_tracepoint); | |
4811 | ||
4812 | ui_out_text (uiout, "\tmarker id is "); | |
4813 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
4814 | b->static_trace_marker_id); | |
4815 | ui_out_text (uiout, "\n"); | |
4816 | } | |
4817 | ||
0d381245 | 4818 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4819 | { |
4820 | annotate_field (6); | |
8b93c638 | 4821 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4822 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4823 | the frame ID. */ | |
5af949e3 UW |
4824 | ui_out_field_core_addr (uiout, "frame", |
4825 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4826 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4827 | } |
4828 | ||
0d381245 | 4829 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4830 | { |
f7f9143b JB |
4831 | /* We do not print the condition for Ada exception catchpoints |
4832 | because the condition is an internal implementation detail | |
4833 | that we do not want to expose to the user. */ | |
c4093a6a | 4834 | annotate_field (7); |
d77f58be | 4835 | if (is_tracepoint (b)) |
1042e4c0 SS |
4836 | ui_out_text (uiout, "\ttrace only if "); |
4837 | else | |
4838 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4839 | ui_out_field_string (uiout, "cond", b->cond_string); |
4840 | ui_out_text (uiout, "\n"); | |
4841 | } | |
4842 | ||
0d381245 | 4843 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4844 | { |
4a64f543 | 4845 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4846 | ui_out_text (uiout, "\tstop only in thread "); |
4847 | ui_out_field_int (uiout, "thread", b->thread); | |
4848 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4849 | } |
4850 | ||
63c715c6 | 4851 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4852 | { |
4a64f543 | 4853 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4854 | if (ep_is_catchpoint (b)) |
4855 | ui_out_text (uiout, "\tcatchpoint"); | |
4856 | else | |
4857 | ui_out_text (uiout, "\tbreakpoint"); | |
4858 | ui_out_text (uiout, " already hit "); | |
4859 | ui_out_field_int (uiout, "times", b->hit_count); | |
4860 | if (b->hit_count == 1) | |
4861 | ui_out_text (uiout, " time\n"); | |
4862 | else | |
4863 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4864 | } |
4865 | ||
4a64f543 MS |
4866 | /* Output the count also if it is zero, but only if this is mi. |
4867 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4868 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4869 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4870 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4871 | |
0d381245 | 4872 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4873 | { |
4874 | annotate_field (8); | |
8b93c638 JM |
4875 | ui_out_text (uiout, "\tignore next "); |
4876 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4877 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4878 | } |
059fb39f | 4879 | |
9add0f1b | 4880 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4881 | if (!part_of_multiple && l) |
c4093a6a | 4882 | { |
3b31d625 EZ |
4883 | struct cleanup *script_chain; |
4884 | ||
c4093a6a | 4885 | annotate_field (9); |
3b31d625 | 4886 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4887 | print_command_lines (uiout, l, 4); |
3b31d625 | 4888 | do_cleanups (script_chain); |
c4093a6a | 4889 | } |
d24317b4 | 4890 | |
1042e4c0 SS |
4891 | if (!part_of_multiple && b->pass_count) |
4892 | { | |
4893 | annotate_field (10); | |
4894 | ui_out_text (uiout, "\tpass count "); | |
4895 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4896 | ui_out_text (uiout, " \n"); | |
4897 | } | |
4898 | ||
d24317b4 VP |
4899 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4900 | { | |
4901 | if (b->addr_string) | |
4902 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4903 | else if (b->exp_string) | |
4904 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4905 | } | |
4906 | ||
3b31d625 | 4907 | do_cleanups (bkpt_chain); |
8b93c638 | 4908 | do_cleanups (old_chain); |
c4093a6a | 4909 | } |
c5aa993b | 4910 | |
0d381245 VP |
4911 | static void |
4912 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 MS |
4913 | struct bp_location **last_loc, |
4914 | int print_address_bits, | |
6c95b8df | 4915 | int allflag) |
0d381245 | 4916 | { |
6c95b8df PA |
4917 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4918 | print_address_bits, allflag); | |
0d381245 VP |
4919 | |
4920 | /* If this breakpoint has custom print function, | |
4921 | it's already printed. Otherwise, print individual | |
4922 | locations, if any. */ | |
4923 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4924 | { | |
4a64f543 MS |
4925 | /* If breakpoint has a single location that is disabled, we |
4926 | print it as if it had several locations, since otherwise it's | |
4927 | hard to represent "breakpoint enabled, location disabled" | |
4928 | situation. | |
4929 | ||
4930 | Note that while hardware watchpoints have several locations | |
4931 | internally, that's no a property exposed to user. */ | |
0d381245 | 4932 | if (b->loc |
a5606eee | 4933 | && !is_hardware_watchpoint (b) |
0d381245 | 4934 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4935 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4936 | { |
4937 | struct bp_location *loc; | |
4938 | int n = 1; | |
4939 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4940 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4941 | print_address_bits, allflag); |
0d381245 VP |
4942 | } |
4943 | } | |
4944 | } | |
4945 | ||
a6d9a66e UW |
4946 | static int |
4947 | breakpoint_address_bits (struct breakpoint *b) | |
4948 | { | |
4949 | int print_address_bits = 0; | |
4950 | struct bp_location *loc; | |
4951 | ||
4952 | for (loc = b->loc; loc; loc = loc->next) | |
4953 | { | |
c7437ca6 PA |
4954 | int addr_bit; |
4955 | ||
4956 | /* Software watchpoints that aren't watching memory don't have | |
4957 | an address to print. */ | |
4958 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4959 | continue; | |
4960 | ||
4961 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4962 | if (addr_bit > print_address_bits) |
4963 | print_address_bits = addr_bit; | |
4964 | } | |
4965 | ||
4966 | return print_address_bits; | |
4967 | } | |
0d381245 | 4968 | |
c4093a6a JM |
4969 | struct captured_breakpoint_query_args |
4970 | { | |
4971 | int bnum; | |
4972 | }; | |
c5aa993b | 4973 | |
c4093a6a | 4974 | static int |
2b65245e | 4975 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4976 | { |
4977 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4978 | struct breakpoint *b; |
a6d9a66e | 4979 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 4980 | |
c4093a6a JM |
4981 | ALL_BREAKPOINTS (b) |
4982 | { | |
4983 | if (args->bnum == b->number) | |
c5aa993b | 4984 | { |
a6d9a66e | 4985 | int print_address_bits = breakpoint_address_bits (b); |
cc59ec59 | 4986 | |
6c95b8df | 4987 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4988 | return GDB_RC_OK; |
c5aa993b | 4989 | } |
c4093a6a JM |
4990 | } |
4991 | return GDB_RC_NONE; | |
4992 | } | |
c5aa993b | 4993 | |
c4093a6a | 4994 | enum gdb_rc |
4a64f543 MS |
4995 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
4996 | char **error_message) | |
c4093a6a JM |
4997 | { |
4998 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 4999 | |
c4093a6a JM |
5000 | args.bnum = bnum; |
5001 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5002 | an error. */ |
b0b13bb4 DJ |
5003 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5004 | error_message, RETURN_MASK_ALL) < 0) | |
5005 | return GDB_RC_FAIL; | |
5006 | else | |
5007 | return GDB_RC_OK; | |
c4093a6a | 5008 | } |
c5aa993b | 5009 | |
7f3b0473 | 5010 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4a64f543 | 5011 | catchpoints, et.al.). */ |
7f3b0473 AC |
5012 | |
5013 | static int | |
5014 | user_settable_breakpoint (const struct breakpoint *b) | |
5015 | { | |
5016 | return (b->type == bp_breakpoint | |
ce78b96d | 5017 | || b->type == bp_catchpoint |
7f3b0473 | 5018 | || b->type == bp_hardware_breakpoint |
d77f58be | 5019 | || is_tracepoint (b) |
cc60f2e3 | 5020 | || is_watchpoint (b)); |
7f3b0473 | 5021 | } |
4a64f543 | 5022 | |
7f3b0473 | 5023 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5024 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5025 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5026 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5027 | ones for which it returns non-zero. Return the total number of | |
5028 | breakpoints listed. */ | |
c906108c | 5029 | |
d77f58be | 5030 | static int |
4a64f543 MS |
5031 | breakpoint_1 (int bnum, int allflag, |
5032 | int (*filter) (const struct breakpoint *)) | |
c4093a6a | 5033 | { |
52f0bd74 | 5034 | struct breakpoint *b; |
a6d9a66e | 5035 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5036 | int nr_printable_breakpoints; |
3b31d625 | 5037 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5038 | struct value_print_options opts; |
a6d9a66e | 5039 | int print_address_bits = 0; |
269b11a2 PA |
5040 | int print_type_col_width = 14; |
5041 | ||
79a45b7d TT |
5042 | get_user_print_options (&opts); |
5043 | ||
4a64f543 MS |
5044 | /* Compute the number of rows in the table, as well as the size |
5045 | required for address fields. */ | |
7f3b0473 AC |
5046 | nr_printable_breakpoints = 0; |
5047 | ALL_BREAKPOINTS (b) | |
5048 | if (bnum == -1 | |
5049 | || bnum == b->number) | |
5050 | { | |
d77f58be SS |
5051 | /* If we have a filter, only list the breakpoints it accepts. */ |
5052 | if (filter && !filter (b)) | |
5053 | continue; | |
5054 | ||
84f4c1fe PM |
5055 | if (allflag || (user_settable_breakpoint (b) |
5056 | && b->number > 0)) | |
a6d9a66e | 5057 | { |
269b11a2 PA |
5058 | int addr_bit, type_len; |
5059 | ||
5060 | addr_bit = breakpoint_address_bits (b); | |
a6d9a66e UW |
5061 | if (addr_bit > print_address_bits) |
5062 | print_address_bits = addr_bit; | |
5063 | ||
269b11a2 PA |
5064 | type_len = strlen (bptype_string (b->type)); |
5065 | if (type_len > print_type_col_width) | |
5066 | print_type_col_width = type_len; | |
5067 | ||
a6d9a66e UW |
5068 | nr_printable_breakpoints++; |
5069 | } | |
7f3b0473 AC |
5070 | } |
5071 | ||
79a45b7d | 5072 | if (opts.addressprint) |
3b31d625 EZ |
5073 | bkpttbl_chain |
5074 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
5075 | "BreakpointTable"); | |
8b93c638 | 5076 | else |
3b31d625 EZ |
5077 | bkpttbl_chain |
5078 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
5079 | "BreakpointTable"); | |
8b93c638 | 5080 | |
7f3b0473 | 5081 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5082 | annotate_breakpoints_headers (); |
5083 | if (nr_printable_breakpoints > 0) | |
5084 | annotate_field (0); | |
4a64f543 | 5085 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5086 | if (nr_printable_breakpoints > 0) |
5087 | annotate_field (1); | |
269b11a2 | 5088 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5089 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5090 | if (nr_printable_breakpoints > 0) |
5091 | annotate_field (2); | |
4a64f543 | 5092 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5093 | if (nr_printable_breakpoints > 0) |
5094 | annotate_field (3); | |
54e52265 | 5095 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5096 | if (opts.addressprint) |
7f3b0473 | 5097 | { |
d7faa9e7 AC |
5098 | if (nr_printable_breakpoints > 0) |
5099 | annotate_field (4); | |
a6d9a66e | 5100 | if (print_address_bits <= 32) |
4a64f543 MS |
5101 | ui_out_table_header (uiout, 10, ui_left, |
5102 | "addr", "Address"); /* 5 */ | |
7f3b0473 | 5103 | else |
4a64f543 MS |
5104 | ui_out_table_header (uiout, 18, ui_left, |
5105 | "addr", "Address"); /* 5 */ | |
7f3b0473 | 5106 | } |
d7faa9e7 AC |
5107 | if (nr_printable_breakpoints > 0) |
5108 | annotate_field (5); | |
5109 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5110 | ui_out_table_body (uiout); | |
5111 | if (nr_printable_breakpoints > 0) | |
5112 | annotate_breakpoints_table (); | |
7f3b0473 | 5113 | |
c4093a6a | 5114 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5115 | { |
5116 | QUIT; | |
c4093a6a JM |
5117 | if (bnum == -1 |
5118 | || bnum == b->number) | |
5119 | { | |
d77f58be SS |
5120 | /* If we have a filter, only list the breakpoints it accepts. */ |
5121 | if (filter && !filter (b)) | |
5122 | continue; | |
5123 | ||
c4093a6a | 5124 | /* We only print out user settable breakpoints unless the |
4a64f543 | 5125 | allflag is set. */ |
84f4c1fe PM |
5126 | if (allflag || (user_settable_breakpoint (b) |
5127 | && b->number > 0)) | |
6c95b8df | 5128 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5129 | } |
bad56014 | 5130 | } |
c4093a6a | 5131 | |
3b31d625 | 5132 | do_cleanups (bkpttbl_chain); |
698384cd | 5133 | |
7f3b0473 | 5134 | if (nr_printable_breakpoints == 0) |
c906108c | 5135 | { |
4a64f543 MS |
5136 | /* If there's a filter, let the caller decide how to report |
5137 | empty list. */ | |
d77f58be SS |
5138 | if (!filter) |
5139 | { | |
5140 | if (bnum == -1) | |
5141 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5142 | else | |
4a64f543 MS |
5143 | ui_out_message (uiout, 0, |
5144 | "No breakpoint or watchpoint number %d.\n", | |
d77f58be SS |
5145 | bnum); |
5146 | } | |
c906108c SS |
5147 | } |
5148 | else | |
c4093a6a | 5149 | { |
a6d9a66e UW |
5150 | if (last_loc && !server_command) |
5151 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5152 | } |
c906108c | 5153 | |
4a64f543 | 5154 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5155 | there have been breakpoints? */ |
c906108c | 5156 | annotate_breakpoints_table_end (); |
d77f58be SS |
5157 | |
5158 | return nr_printable_breakpoints; | |
c906108c SS |
5159 | } |
5160 | ||
ad443146 SS |
5161 | /* Display the value of default-collect in a way that is generally |
5162 | compatible with the breakpoint list. */ | |
5163 | ||
5164 | static void | |
5165 | default_collect_info (void) | |
5166 | { | |
5167 | /* If it has no value (which is frequently the case), say nothing; a | |
5168 | message like "No default-collect." gets in user's face when it's | |
5169 | not wanted. */ | |
5170 | if (!*default_collect) | |
5171 | return; | |
5172 | ||
5173 | /* The following phrase lines up nicely with per-tracepoint collect | |
5174 | actions. */ | |
5175 | ui_out_text (uiout, "default collect "); | |
5176 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5177 | ui_out_text (uiout, " \n"); | |
5178 | } | |
5179 | ||
c906108c | 5180 | static void |
fba45db2 | 5181 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5182 | { |
5183 | int bnum = -1; | |
5184 | ||
5185 | if (bnum_exp) | |
bb518678 | 5186 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5187 | |
d77f58be | 5188 | breakpoint_1 (bnum, 0, NULL); |
ad443146 SS |
5189 | |
5190 | default_collect_info (); | |
d77f58be SS |
5191 | } |
5192 | ||
5193 | static void | |
5194 | watchpoints_info (char *wpnum_exp, int from_tty) | |
5195 | { | |
5196 | int wpnum = -1, num_printed; | |
5197 | ||
5198 | if (wpnum_exp) | |
5199 | wpnum = parse_and_eval_long (wpnum_exp); | |
5200 | ||
5201 | num_printed = breakpoint_1 (wpnum, 0, is_watchpoint); | |
5202 | ||
5203 | if (num_printed == 0) | |
5204 | { | |
5205 | if (wpnum == -1) | |
5206 | ui_out_message (uiout, 0, "No watchpoints.\n"); | |
5207 | else | |
5208 | ui_out_message (uiout, 0, "No watchpoint number %d.\n", wpnum); | |
5209 | } | |
c906108c SS |
5210 | } |
5211 | ||
7a292a7a | 5212 | static void |
fba45db2 | 5213 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5214 | { |
5215 | int bnum = -1; | |
5216 | ||
5217 | if (bnum_exp) | |
bb518678 | 5218 | bnum = parse_and_eval_long (bnum_exp); |
c906108c | 5219 | |
d77f58be | 5220 | breakpoint_1 (bnum, 1, NULL); |
ad443146 SS |
5221 | |
5222 | default_collect_info (); | |
c906108c SS |
5223 | } |
5224 | ||
0d381245 | 5225 | static int |
714835d5 | 5226 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5227 | struct program_space *pspace, |
714835d5 | 5228 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5229 | { |
5230 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5231 | |
0d381245 VP |
5232 | for (; bl; bl = bl->next) |
5233 | { | |
6c95b8df PA |
5234 | if (bl->pspace == pspace |
5235 | && bl->address == pc | |
0d381245 VP |
5236 | && (!overlay_debugging || bl->section == section)) |
5237 | return 1; | |
5238 | } | |
5239 | return 0; | |
5240 | } | |
5241 | ||
6c95b8df PA |
5242 | /* Print a message describing any breakpoints set at PC. This |
5243 | concerns with logical breakpoints, so we match program spaces, not | |
5244 | address spaces. */ | |
c906108c SS |
5245 | |
5246 | static void | |
6c95b8df PA |
5247 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5248 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5249 | struct obj_section *section, int thread) |
c906108c | 5250 | { |
52f0bd74 AC |
5251 | int others = 0; |
5252 | struct breakpoint *b; | |
c906108c SS |
5253 | |
5254 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5255 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5256 | if (others > 0) |
5257 | { | |
a3f17187 AC |
5258 | if (others == 1) |
5259 | printf_filtered (_("Note: breakpoint ")); | |
5260 | else /* if (others == ???) */ | |
5261 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5262 | ALL_BREAKPOINTS (b) |
6c95b8df | 5263 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5264 | { |
5265 | others--; | |
5266 | printf_filtered ("%d", b->number); | |
5267 | if (b->thread == -1 && thread != -1) | |
5268 | printf_filtered (" (all threads)"); | |
5269 | else if (b->thread != -1) | |
5270 | printf_filtered (" (thread %d)", b->thread); | |
5271 | printf_filtered ("%s%s ", | |
059fb39f | 5272 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5273 | || b->enable_state == bp_call_disabled |
5274 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5275 | ? " (disabled)" |
5276 | : b->enable_state == bp_permanent | |
5277 | ? " (permanent)" | |
5278 | : ""), | |
5279 | (others > 1) ? "," | |
5280 | : ((others == 1) ? " and" : "")); | |
5281 | } | |
a3f17187 | 5282 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5283 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5284 | printf_filtered (".\n"); |
5285 | } | |
5286 | } | |
5287 | \f | |
5288 | /* Set the default place to put a breakpoint | |
5289 | for the `break' command with no arguments. */ | |
5290 | ||
5291 | void | |
6c95b8df PA |
5292 | set_default_breakpoint (int valid, struct program_space *pspace, |
5293 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5294 | int line) |
c906108c SS |
5295 | { |
5296 | default_breakpoint_valid = valid; | |
6c95b8df | 5297 | default_breakpoint_pspace = pspace; |
c906108c SS |
5298 | default_breakpoint_address = addr; |
5299 | default_breakpoint_symtab = symtab; | |
5300 | default_breakpoint_line = line; | |
5301 | } | |
5302 | ||
e4f237da KB |
5303 | /* Return true iff it is meaningful to use the address member of |
5304 | BPT. For some breakpoint types, the address member is irrelevant | |
5305 | and it makes no sense to attempt to compare it to other addresses | |
5306 | (or use it for any other purpose either). | |
5307 | ||
4a64f543 MS |
5308 | More specifically, each of the following breakpoint types will |
5309 | always have a zero valued address and we don't want to mark | |
5310 | breakpoints of any of these types to be a duplicate of an actual | |
5311 | breakpoint at address zero: | |
e4f237da KB |
5312 | |
5313 | bp_watchpoint | |
2d134ed3 PA |
5314 | bp_catchpoint |
5315 | ||
5316 | */ | |
e4f237da KB |
5317 | |
5318 | static int | |
5319 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5320 | { | |
5321 | enum bptype type = bpt->type; | |
5322 | ||
2d134ed3 PA |
5323 | return (type != bp_watchpoint && type != bp_catchpoint); |
5324 | } | |
5325 | ||
5326 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5327 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5328 | ||
5329 | static int | |
4a64f543 MS |
5330 | watchpoint_locations_match (struct bp_location *loc1, |
5331 | struct bp_location *loc2) | |
2d134ed3 | 5332 | { |
2bdf28a0 JK |
5333 | /* Both of them must not be in moribund_locations. */ |
5334 | gdb_assert (loc1->owner != NULL); | |
5335 | gdb_assert (loc2->owner != NULL); | |
5336 | ||
4a64f543 MS |
5337 | /* If the target can evaluate the condition expression in hardware, |
5338 | then we we need to insert both watchpoints even if they are at | |
5339 | the same place. Otherwise the watchpoint will only trigger when | |
5340 | the condition of whichever watchpoint was inserted evaluates to | |
5341 | true, not giving a chance for GDB to check the condition of the | |
5342 | other watchpoint. */ | |
0cf6dd15 | 5343 | if ((loc1->owner->cond_exp |
4a64f543 MS |
5344 | && target_can_accel_watchpoint_condition (loc1->address, |
5345 | loc1->length, | |
0cf6dd15 TJB |
5346 | loc1->watchpoint_type, |
5347 | loc1->owner->cond_exp)) | |
5348 | || (loc2->owner->cond_exp | |
4a64f543 MS |
5349 | && target_can_accel_watchpoint_condition (loc2->address, |
5350 | loc2->length, | |
0cf6dd15 TJB |
5351 | loc2->watchpoint_type, |
5352 | loc2->owner->cond_exp))) | |
5353 | return 0; | |
5354 | ||
85d721b8 PA |
5355 | /* Note that this checks the owner's type, not the location's. In |
5356 | case the target does not support read watchpoints, but does | |
5357 | support access watchpoints, we'll have bp_read_watchpoint | |
5358 | watchpoints with hw_access locations. Those should be considered | |
5359 | duplicates of hw_read locations. The hw_read locations will | |
5360 | become hw_access locations later. */ | |
2d134ed3 PA |
5361 | return (loc1->owner->type == loc2->owner->type |
5362 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5363 | && loc1->address == loc2->address | |
5364 | && loc1->length == loc2->length); | |
e4f237da KB |
5365 | } |
5366 | ||
6c95b8df PA |
5367 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5368 | same breakpoint location. In most targets, this can only be true | |
5369 | if ASPACE1 matches ASPACE2. On targets that have global | |
5370 | breakpoints, the address space doesn't really matter. */ | |
5371 | ||
5372 | static int | |
5373 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5374 | struct address_space *aspace2, CORE_ADDR addr2) | |
5375 | { | |
5376 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5377 | || aspace1 == aspace2) | |
5378 | && addr1 == addr2); | |
5379 | } | |
5380 | ||
2d134ed3 PA |
5381 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5382 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5383 | represent the same location. */ | |
5384 | ||
5385 | static int | |
4a64f543 MS |
5386 | breakpoint_locations_match (struct bp_location *loc1, |
5387 | struct bp_location *loc2) | |
2d134ed3 | 5388 | { |
2bdf28a0 JK |
5389 | int hw_point1, hw_point2; |
5390 | ||
5391 | /* Both of them must not be in moribund_locations. */ | |
5392 | gdb_assert (loc1->owner != NULL); | |
5393 | gdb_assert (loc2->owner != NULL); | |
5394 | ||
5395 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5396 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5397 | |
5398 | if (hw_point1 != hw_point2) | |
5399 | return 0; | |
5400 | else if (hw_point1) | |
5401 | return watchpoint_locations_match (loc1, loc2); | |
5402 | else | |
5403 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5404 | loc2->pspace->aspace, loc2->address); | |
5405 | } | |
5406 | ||
76897487 KB |
5407 | static void |
5408 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5409 | int bnum, int have_bnum) | |
5410 | { | |
5411 | char astr1[40]; | |
5412 | char astr2[40]; | |
5413 | ||
bb599908 PH |
5414 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5415 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5416 | if (have_bnum) |
8a3fe4f8 | 5417 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5418 | bnum, astr1, astr2); |
5419 | else | |
8a3fe4f8 | 5420 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5421 | } |
5422 | ||
4a64f543 MS |
5423 | /* Adjust a breakpoint's address to account for architectural |
5424 | constraints on breakpoint placement. Return the adjusted address. | |
5425 | Note: Very few targets require this kind of adjustment. For most | |
5426 | targets, this function is simply the identity function. */ | |
76897487 KB |
5427 | |
5428 | static CORE_ADDR | |
a6d9a66e UW |
5429 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5430 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5431 | { |
a6d9a66e | 5432 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5433 | { |
5434 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5435 | return bpaddr; | |
5436 | } | |
88f7da05 KB |
5437 | else if (bptype == bp_watchpoint |
5438 | || bptype == bp_hardware_watchpoint | |
5439 | || bptype == bp_read_watchpoint | |
5440 | || bptype == bp_access_watchpoint | |
fe798b75 | 5441 | || bptype == bp_catchpoint) |
88f7da05 KB |
5442 | { |
5443 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5444 | have their addresses modified. */ | |
5445 | return bpaddr; | |
5446 | } | |
76897487 KB |
5447 | else |
5448 | { | |
5449 | CORE_ADDR adjusted_bpaddr; | |
5450 | ||
5451 | /* Some targets have architectural constraints on the placement | |
5452 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5453 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5454 | |
5455 | /* An adjusted breakpoint address can significantly alter | |
5456 | a user's expectations. Print a warning if an adjustment | |
5457 | is required. */ | |
5458 | if (adjusted_bpaddr != bpaddr) | |
5459 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5460 | ||
5461 | return adjusted_bpaddr; | |
5462 | } | |
5463 | } | |
5464 | ||
7cc221ef DJ |
5465 | /* Allocate a struct bp_location. */ |
5466 | ||
26bb91f3 | 5467 | static struct bp_location * |
39d61571 | 5468 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef | 5469 | { |
afe38095 | 5470 | struct bp_location *loc; |
7cc221ef DJ |
5471 | |
5472 | loc = xmalloc (sizeof (struct bp_location)); | |
5473 | memset (loc, 0, sizeof (*loc)); | |
5474 | ||
e049a4b5 | 5475 | loc->owner = bpt; |
511a6cd4 | 5476 | loc->cond = NULL; |
0d381245 VP |
5477 | loc->shlib_disabled = 0; |
5478 | loc->enabled = 1; | |
e049a4b5 | 5479 | |
39d61571 | 5480 | switch (bpt->type) |
e049a4b5 DJ |
5481 | { |
5482 | case bp_breakpoint: | |
5483 | case bp_until: | |
5484 | case bp_finish: | |
5485 | case bp_longjmp: | |
5486 | case bp_longjmp_resume: | |
186c406b TT |
5487 | case bp_exception: |
5488 | case bp_exception_resume: | |
e049a4b5 | 5489 | case bp_step_resume: |
e049a4b5 DJ |
5490 | case bp_watchpoint_scope: |
5491 | case bp_call_dummy: | |
aa7d318d | 5492 | case bp_std_terminate: |
e049a4b5 DJ |
5493 | case bp_shlib_event: |
5494 | case bp_thread_event: | |
5495 | case bp_overlay_event: | |
4efc6507 | 5496 | case bp_jit_event: |
0fd8e87f | 5497 | case bp_longjmp_master: |
aa7d318d | 5498 | case bp_std_terminate_master: |
186c406b | 5499 | case bp_exception_master: |
e049a4b5 DJ |
5500 | loc->loc_type = bp_loc_software_breakpoint; |
5501 | break; | |
5502 | case bp_hardware_breakpoint: | |
5503 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5504 | break; | |
5505 | case bp_hardware_watchpoint: | |
5506 | case bp_read_watchpoint: | |
5507 | case bp_access_watchpoint: | |
5508 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5509 | break; | |
5510 | case bp_watchpoint: | |
ce78b96d | 5511 | case bp_catchpoint: |
15c3d785 PA |
5512 | case bp_tracepoint: |
5513 | case bp_fast_tracepoint: | |
0fb4aa4b | 5514 | case bp_static_tracepoint: |
e049a4b5 DJ |
5515 | loc->loc_type = bp_loc_other; |
5516 | break; | |
5517 | default: | |
e2e0b3e5 | 5518 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5519 | } |
5520 | ||
f431efe5 | 5521 | loc->refc = 1; |
7cc221ef DJ |
5522 | return loc; |
5523 | } | |
5524 | ||
f431efe5 PA |
5525 | static void |
5526 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 VP |
5527 | { |
5528 | if (loc->cond) | |
5529 | xfree (loc->cond); | |
74960c60 VP |
5530 | |
5531 | if (loc->function_name) | |
5532 | xfree (loc->function_name); | |
f431efe5 | 5533 | |
fe3f5fa8 VP |
5534 | xfree (loc); |
5535 | } | |
5536 | ||
f431efe5 PA |
5537 | /* Increment reference count. */ |
5538 | ||
5539 | static void | |
5540 | incref_bp_location (struct bp_location *bl) | |
5541 | { | |
5542 | ++bl->refc; | |
5543 | } | |
5544 | ||
5545 | /* Decrement reference count. If the reference count reaches 0, | |
5546 | destroy the bp_location. Sets *BLP to NULL. */ | |
5547 | ||
5548 | static void | |
5549 | decref_bp_location (struct bp_location **blp) | |
5550 | { | |
0807b50c PA |
5551 | gdb_assert ((*blp)->refc > 0); |
5552 | ||
f431efe5 PA |
5553 | if (--(*blp)->refc == 0) |
5554 | free_bp_location (*blp); | |
5555 | *blp = NULL; | |
5556 | } | |
5557 | ||
4a64f543 MS |
5558 | /* Helper to set_raw_breakpoint below. Creates a breakpoint that has |
5559 | type BPTYPE and has no locations as yet. */ | |
5560 | /* This function is used in gdbtk sources and thus can not be made | |
5561 | static. */ | |
c906108c | 5562 | |
c40e75cd | 5563 | static struct breakpoint * |
a6d9a66e UW |
5564 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5565 | enum bptype bptype) | |
c906108c | 5566 | { |
52f0bd74 | 5567 | struct breakpoint *b, *b1; |
c906108c SS |
5568 | |
5569 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5570 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5571 | |
4d28f7a8 | 5572 | b->type = bptype; |
a6d9a66e | 5573 | b->gdbarch = gdbarch; |
c906108c SS |
5574 | b->language = current_language->la_language; |
5575 | b->input_radix = input_radix; | |
5576 | b->thread = -1; | |
b5de0fa7 | 5577 | b->enable_state = bp_enabled; |
c906108c SS |
5578 | b->next = 0; |
5579 | b->silent = 0; | |
5580 | b->ignore_count = 0; | |
5581 | b->commands = NULL; | |
818dd999 | 5582 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5583 | b->forked_inferior_pid = null_ptid; |
c906108c | 5584 | b->exec_pathname = NULL; |
a96d9b2e | 5585 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5586 | b->ops = NULL; |
0d381245 | 5587 | b->condition_not_parsed = 0; |
84f4c1fe | 5588 | b->py_bp_object = NULL; |
c906108c | 5589 | |
4a64f543 MS |
5590 | /* Add this breakpoint to the end of the chain so that a list of |
5591 | breakpoints will come out in order of increasing numbers. */ | |
c906108c SS |
5592 | |
5593 | b1 = breakpoint_chain; | |
5594 | if (b1 == 0) | |
5595 | breakpoint_chain = b; | |
5596 | else | |
5597 | { | |
5598 | while (b1->next) | |
5599 | b1 = b1->next; | |
5600 | b1->next = b; | |
5601 | } | |
0d381245 VP |
5602 | return b; |
5603 | } | |
5604 | ||
5605 | /* Initialize loc->function_name. */ | |
5606 | static void | |
5607 | set_breakpoint_location_function (struct bp_location *loc) | |
5608 | { | |
2bdf28a0 JK |
5609 | gdb_assert (loc->owner != NULL); |
5610 | ||
0d381245 | 5611 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5612 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5613 | || is_tracepoint (loc->owner)) |
0d381245 VP |
5614 | { |
5615 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5616 | NULL, NULL); | |
5617 | if (loc->function_name) | |
5618 | loc->function_name = xstrdup (loc->function_name); | |
5619 | } | |
5620 | } | |
5621 | ||
a6d9a66e UW |
5622 | /* Attempt to determine architecture of location identified by SAL. */ |
5623 | static struct gdbarch * | |
5624 | get_sal_arch (struct symtab_and_line sal) | |
5625 | { | |
5626 | if (sal.section) | |
5627 | return get_objfile_arch (sal.section->objfile); | |
5628 | if (sal.symtab) | |
5629 | return get_objfile_arch (sal.symtab->objfile); | |
5630 | ||
5631 | return NULL; | |
5632 | } | |
5633 | ||
0d381245 VP |
5634 | /* set_raw_breakpoint is a low level routine for allocating and |
5635 | partially initializing a breakpoint of type BPTYPE. The newly | |
5636 | created breakpoint's address, section, source file name, and line | |
5637 | number are provided by SAL. The newly created and partially | |
5638 | initialized breakpoint is added to the breakpoint chain and | |
5639 | is also returned as the value of this function. | |
5640 | ||
5641 | It is expected that the caller will complete the initialization of | |
5642 | the newly created breakpoint struct as well as output any status | |
5643 | information regarding the creation of a new breakpoint. In | |
5644 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5645 | number! Care should be taken to not allow an error to occur | |
5646 | prior to completing the initialization of the breakpoint. If this | |
5647 | should happen, a bogus breakpoint will be left on the chain. */ | |
5648 | ||
63c252f8 | 5649 | struct breakpoint * |
a6d9a66e UW |
5650 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5651 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5652 | { |
4a64f543 MS |
5653 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, |
5654 | bptype); | |
0d381245 | 5655 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5656 | struct gdbarch *loc_gdbarch; |
5657 | ||
5658 | loc_gdbarch = get_sal_arch (sal); | |
5659 | if (!loc_gdbarch) | |
5660 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5661 | |
6c95b8df PA |
5662 | if (bptype != bp_catchpoint) |
5663 | gdb_assert (sal.pspace != NULL); | |
5664 | ||
0d381245 VP |
5665 | /* Adjust the breakpoint's address prior to allocating a location. |
5666 | Once we call allocate_bp_location(), that mostly uninitialized | |
5667 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5668 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5669 | not want its scan of the location chain to find a breakpoint and |
5670 | location that's only been partially initialized. */ | |
4a64f543 MS |
5671 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, |
5672 | sal.pc, b->type); | |
0d381245 | 5673 | |
39d61571 | 5674 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5675 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5676 | b->loc->requested_address = sal.pc; |
5677 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5678 | b->loc->pspace = sal.pspace; |
5679 | ||
5680 | /* Store the program space that was used to set the breakpoint, for | |
5681 | breakpoint resetting. */ | |
5682 | b->pspace = sal.pspace; | |
0d381245 VP |
5683 | |
5684 | if (sal.symtab == NULL) | |
5685 | b->source_file = NULL; | |
5686 | else | |
1b36a34b | 5687 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5688 | b->loc->section = sal.section; |
5689 | b->line_number = sal.line; | |
5690 | ||
5691 | set_breakpoint_location_function (b->loc); | |
c906108c | 5692 | |
c906108c SS |
5693 | breakpoints_changed (); |
5694 | ||
5695 | return b; | |
5696 | } | |
5697 | ||
c2c6d25f JM |
5698 | |
5699 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5700 | instruction, hard-wired into the inferior's code. */ | |
5701 | void | |
5702 | make_breakpoint_permanent (struct breakpoint *b) | |
5703 | { | |
0d381245 | 5704 | struct bp_location *bl; |
cc59ec59 | 5705 | |
b5de0fa7 | 5706 | b->enable_state = bp_permanent; |
c2c6d25f | 5707 | |
4a64f543 MS |
5708 | /* By definition, permanent breakpoints are already present in the |
5709 | code. Mark all locations as inserted. For now, | |
5710 | make_breakpoint_permanent is called in just one place, so it's | |
5711 | hard to say if it's reasonable to have permanent breakpoint with | |
5712 | multiple locations or not, but it's easy to implmement. */ | |
0d381245 VP |
5713 | for (bl = b->loc; bl; bl = bl->next) |
5714 | bl->inserted = 1; | |
c2c6d25f JM |
5715 | } |
5716 | ||
53a5351d | 5717 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5718 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5719 | initiated the operation. */ | |
c906108c SS |
5720 | |
5721 | void | |
186c406b | 5722 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5723 | { |
35df4500 | 5724 | struct breakpoint *b, *b_tmp; |
186c406b | 5725 | int thread = tp->num; |
0fd8e87f UW |
5726 | |
5727 | /* To avoid having to rescan all objfile symbols at every step, | |
5728 | we maintain a list of continually-inserted but always disabled | |
5729 | longjmp "master" breakpoints. Here, we simply create momentary | |
5730 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5731 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5732 | if (b->pspace == current_program_space |
186c406b TT |
5733 | && (b->type == bp_longjmp_master |
5734 | || b->type == bp_exception_master)) | |
0fd8e87f UW |
5735 | { |
5736 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
cc59ec59 | 5737 | |
186c406b | 5738 | clone->type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
0fd8e87f UW |
5739 | clone->thread = thread; |
5740 | } | |
186c406b TT |
5741 | |
5742 | tp->initiating_frame = frame; | |
c906108c SS |
5743 | } |
5744 | ||
611c83ae | 5745 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5746 | void |
611c83ae | 5747 | delete_longjmp_breakpoint (int thread) |
c906108c | 5748 | { |
35df4500 | 5749 | struct breakpoint *b, *b_tmp; |
c906108c | 5750 | |
35df4500 | 5751 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5752 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5753 | { |
5754 | if (b->thread == thread) | |
5755 | delete_breakpoint (b); | |
5756 | } | |
c906108c SS |
5757 | } |
5758 | ||
1900040c MS |
5759 | void |
5760 | enable_overlay_breakpoints (void) | |
5761 | { | |
52f0bd74 | 5762 | struct breakpoint *b; |
1900040c MS |
5763 | |
5764 | ALL_BREAKPOINTS (b) | |
5765 | if (b->type == bp_overlay_event) | |
5766 | { | |
5767 | b->enable_state = bp_enabled; | |
b60e7edf | 5768 | update_global_location_list (1); |
c02f5703 | 5769 | overlay_events_enabled = 1; |
1900040c MS |
5770 | } |
5771 | } | |
5772 | ||
5773 | void | |
5774 | disable_overlay_breakpoints (void) | |
5775 | { | |
52f0bd74 | 5776 | struct breakpoint *b; |
1900040c MS |
5777 | |
5778 | ALL_BREAKPOINTS (b) | |
5779 | if (b->type == bp_overlay_event) | |
5780 | { | |
5781 | b->enable_state = bp_disabled; | |
b60e7edf | 5782 | update_global_location_list (0); |
c02f5703 | 5783 | overlay_events_enabled = 0; |
1900040c MS |
5784 | } |
5785 | } | |
5786 | ||
aa7d318d TT |
5787 | /* Set an active std::terminate breakpoint for each std::terminate |
5788 | master breakpoint. */ | |
5789 | void | |
5790 | set_std_terminate_breakpoint (void) | |
5791 | { | |
35df4500 | 5792 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5793 | |
35df4500 | 5794 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5795 | if (b->pspace == current_program_space |
5796 | && b->type == bp_std_terminate_master) | |
5797 | { | |
5798 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5799 | clone->type = bp_std_terminate; | |
5800 | } | |
5801 | } | |
5802 | ||
5803 | /* Delete all the std::terminate breakpoints. */ | |
5804 | void | |
5805 | delete_std_terminate_breakpoint (void) | |
5806 | { | |
35df4500 | 5807 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5808 | |
35df4500 | 5809 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5810 | if (b->type == bp_std_terminate) |
5811 | delete_breakpoint (b); | |
5812 | } | |
5813 | ||
c4093a6a | 5814 | struct breakpoint * |
a6d9a66e | 5815 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5816 | { |
5817 | struct breakpoint *b; | |
c4093a6a | 5818 | |
a6d9a66e | 5819 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5820 | |
b5de0fa7 | 5821 | b->enable_state = bp_enabled; |
c4093a6a | 5822 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5823 | b->addr_string |
5824 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5825 | |
b60e7edf | 5826 | update_global_location_list_nothrow (1); |
74960c60 | 5827 | |
c4093a6a JM |
5828 | return b; |
5829 | } | |
5830 | ||
5831 | void | |
5832 | remove_thread_event_breakpoints (void) | |
5833 | { | |
35df4500 | 5834 | struct breakpoint *b, *b_tmp; |
c4093a6a | 5835 | |
35df4500 | 5836 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5837 | if (b->type == bp_thread_event |
5838 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5839 | delete_breakpoint (b); |
5840 | } | |
5841 | ||
0101ce28 JJ |
5842 | struct captured_parse_breakpoint_args |
5843 | { | |
5844 | char **arg_p; | |
5845 | struct symtabs_and_lines *sals_p; | |
5846 | char ***addr_string_p; | |
5847 | int *not_found_ptr; | |
5848 | }; | |
5849 | ||
5850 | struct lang_and_radix | |
5851 | { | |
5852 | enum language lang; | |
5853 | int radix; | |
5854 | }; | |
5855 | ||
4efc6507 DE |
5856 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5857 | ||
5858 | struct breakpoint * | |
5859 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5860 | { | |
5861 | struct breakpoint *b; | |
5862 | ||
5863 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5864 | update_global_location_list_nothrow (1); | |
5865 | return b; | |
5866 | } | |
0101ce28 | 5867 | |
cae688ec JJ |
5868 | void |
5869 | remove_solib_event_breakpoints (void) | |
5870 | { | |
35df4500 | 5871 | struct breakpoint *b, *b_tmp; |
cae688ec | 5872 | |
35df4500 | 5873 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
5874 | if (b->type == bp_shlib_event |
5875 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5876 | delete_breakpoint (b); |
5877 | } | |
5878 | ||
5879 | struct breakpoint * | |
a6d9a66e | 5880 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5881 | { |
5882 | struct breakpoint *b; | |
5883 | ||
a6d9a66e | 5884 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5885 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5886 | return b; |
5887 | } | |
5888 | ||
5889 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5890 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5891 | ||
5892 | void | |
cb851954 | 5893 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5894 | { |
876fa593 | 5895 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5896 | |
876fa593 | 5897 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5898 | { |
2bdf28a0 | 5899 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5900 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 5901 | |
4a64f543 MS |
5902 | /* We apply the check to all breakpoints, including disabled for |
5903 | those with loc->duplicate set. This is so that when breakpoint | |
5904 | becomes enabled, or the duplicate is removed, gdb will try to | |
5905 | insert all breakpoints. If we don't set shlib_disabled here, | |
5906 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 5907 | if (((b->type == bp_breakpoint) |
508ccb1f | 5908 | || (b->type == bp_jit_event) |
1042e4c0 | 5909 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 5910 | || (is_tracepoint (b))) |
6c95b8df | 5911 | && loc->pspace == current_program_space |
0d381245 | 5912 | && !loc->shlib_disabled |
a77053c2 | 5913 | #ifdef PC_SOLIB |
0d381245 | 5914 | && PC_SOLIB (loc->address) |
a77053c2 | 5915 | #else |
6c95b8df | 5916 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5917 | #endif |
5918 | ) | |
0d381245 VP |
5919 | { |
5920 | loc->shlib_disabled = 1; | |
5921 | } | |
cae688ec JJ |
5922 | } |
5923 | } | |
5924 | ||
4a64f543 MS |
5925 | /* Disable any breakpoints that are in in an unloaded shared library. |
5926 | Only apply to enabled breakpoints, disabled ones can just stay | |
5927 | disabled. */ | |
84acb35a | 5928 | |
75149521 | 5929 | static void |
84acb35a JJ |
5930 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5931 | { | |
876fa593 | 5932 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5933 | int disabled_shlib_breaks = 0; |
5934 | ||
c86cf029 VP |
5935 | /* SunOS a.out shared libraries are always mapped, so do not |
5936 | disable breakpoints; they will only be reported as unloaded | |
5937 | through clear_solib when GDB discards its shared library | |
5938 | list. See clear_solib for more information. */ | |
5939 | if (exec_bfd != NULL | |
5940 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5941 | return; | |
5942 | ||
876fa593 | 5943 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5944 | { |
2bdf28a0 | 5945 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 5946 | struct breakpoint *b = loc->owner; |
cc59ec59 | 5947 | |
0d381245 VP |
5948 | if ((loc->loc_type == bp_loc_hardware_breakpoint |
5949 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5950 | && solib->pspace == loc->pspace |
e2dd7057 | 5951 | && !loc->shlib_disabled |
508ccb1f TT |
5952 | && (b->type == bp_breakpoint |
5953 | || b->type == bp_jit_event | |
5954 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5955 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5956 | { |
e2dd7057 PP |
5957 | loc->shlib_disabled = 1; |
5958 | /* At this point, we cannot rely on remove_breakpoint | |
5959 | succeeding so we must mark the breakpoint as not inserted | |
5960 | to prevent future errors occurring in remove_breakpoints. */ | |
5961 | loc->inserted = 0; | |
5962 | if (!disabled_shlib_breaks) | |
5963 | { | |
5964 | target_terminal_ours_for_output (); | |
5965 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5966 | solib->so_name); | |
84acb35a | 5967 | } |
e2dd7057 | 5968 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5969 | } |
5970 | } | |
84acb35a JJ |
5971 | } |
5972 | ||
ce78b96d JB |
5973 | /* FORK & VFORK catchpoints. */ |
5974 | ||
4a64f543 MS |
5975 | /* Implement the "insert" breakpoint_ops method for fork |
5976 | catchpoints. */ | |
ce78b96d | 5977 | |
c906108c | 5978 | static void |
ce78b96d JB |
5979 | insert_catch_fork (struct breakpoint *b) |
5980 | { | |
5981 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5982 | } | |
5983 | ||
4a64f543 MS |
5984 | /* Implement the "remove" breakpoint_ops method for fork |
5985 | catchpoints. */ | |
ce78b96d JB |
5986 | |
5987 | static int | |
5988 | remove_catch_fork (struct breakpoint *b) | |
5989 | { | |
5990 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5991 | } | |
5992 | ||
5993 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5994 | catchpoints. */ | |
5995 | ||
5996 | static int | |
5997 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5998 | { | |
5999 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
6000 | } | |
6001 | ||
4a64f543 MS |
6002 | /* Implement the "print_it" breakpoint_ops method for fork |
6003 | catchpoints. */ | |
ce78b96d JB |
6004 | |
6005 | static enum print_stop_action | |
6006 | print_it_catch_fork (struct breakpoint *b) | |
6007 | { | |
6008 | annotate_catchpoint (b->number); | |
6009 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
6010 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6011 | return PRINT_SRC_AND_LOC; | |
6012 | } | |
6013 | ||
4a64f543 MS |
6014 | /* Implement the "print_one" breakpoint_ops method for fork |
6015 | catchpoints. */ | |
ce78b96d JB |
6016 | |
6017 | static void | |
a6d9a66e | 6018 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6019 | { |
79a45b7d TT |
6020 | struct value_print_options opts; |
6021 | ||
6022 | get_user_print_options (&opts); | |
6023 | ||
4a64f543 MS |
6024 | /* Field 4, the address, is omitted (which makes the columns not |
6025 | line up too nicely with the headers, but the effect is relatively | |
6026 | readable). */ | |
79a45b7d | 6027 | if (opts.addressprint) |
ce78b96d JB |
6028 | ui_out_field_skip (uiout, "addr"); |
6029 | annotate_field (5); | |
6030 | ui_out_text (uiout, "fork"); | |
6031 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6032 | { | |
6033 | ui_out_text (uiout, ", process "); | |
6034 | ui_out_field_int (uiout, "what", | |
6035 | ptid_get_pid (b->forked_inferior_pid)); | |
6036 | ui_out_spaces (uiout, 1); | |
6037 | } | |
6038 | } | |
6039 | ||
6040 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6041 | catchpoints. */ | |
6042 | ||
6043 | static void | |
6044 | print_mention_catch_fork (struct breakpoint *b) | |
6045 | { | |
6046 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6047 | } | |
6048 | ||
6149aea9 PA |
6049 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6050 | catchpoints. */ | |
6051 | ||
6052 | static void | |
6053 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6054 | { | |
6055 | fprintf_unfiltered (fp, "catch fork"); | |
6056 | } | |
6057 | ||
ce78b96d JB |
6058 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6059 | ||
6060 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
6061 | { | |
6062 | insert_catch_fork, | |
6063 | remove_catch_fork, | |
6064 | breakpoint_hit_catch_fork, | |
6065 | print_it_catch_fork, | |
6066 | print_one_catch_fork, | |
6149aea9 PA |
6067 | print_mention_catch_fork, |
6068 | print_recreate_catch_fork | |
ce78b96d JB |
6069 | }; |
6070 | ||
4a64f543 MS |
6071 | /* Implement the "insert" breakpoint_ops method for vfork |
6072 | catchpoints. */ | |
ce78b96d JB |
6073 | |
6074 | static void | |
6075 | insert_catch_vfork (struct breakpoint *b) | |
6076 | { | |
6077 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6078 | } | |
6079 | ||
4a64f543 MS |
6080 | /* Implement the "remove" breakpoint_ops method for vfork |
6081 | catchpoints. */ | |
ce78b96d JB |
6082 | |
6083 | static int | |
6084 | remove_catch_vfork (struct breakpoint *b) | |
6085 | { | |
6086 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6087 | } | |
6088 | ||
6089 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6090 | catchpoints. */ | |
6091 | ||
6092 | static int | |
6093 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
6094 | { | |
6095 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
6096 | } | |
6097 | ||
4a64f543 MS |
6098 | /* Implement the "print_it" breakpoint_ops method for vfork |
6099 | catchpoints. */ | |
ce78b96d JB |
6100 | |
6101 | static enum print_stop_action | |
6102 | print_it_catch_vfork (struct breakpoint *b) | |
6103 | { | |
6104 | annotate_catchpoint (b->number); | |
6105 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
6106 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
6107 | return PRINT_SRC_AND_LOC; | |
6108 | } | |
6109 | ||
4a64f543 MS |
6110 | /* Implement the "print_one" breakpoint_ops method for vfork |
6111 | catchpoints. */ | |
ce78b96d JB |
6112 | |
6113 | static void | |
a6d9a66e | 6114 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6115 | { |
79a45b7d TT |
6116 | struct value_print_options opts; |
6117 | ||
6118 | get_user_print_options (&opts); | |
4a64f543 MS |
6119 | /* Field 4, the address, is omitted (which makes the columns not |
6120 | line up too nicely with the headers, but the effect is relatively | |
6121 | readable). */ | |
79a45b7d | 6122 | if (opts.addressprint) |
ce78b96d JB |
6123 | ui_out_field_skip (uiout, "addr"); |
6124 | annotate_field (5); | |
6125 | ui_out_text (uiout, "vfork"); | |
6126 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
6127 | { | |
6128 | ui_out_text (uiout, ", process "); | |
6129 | ui_out_field_int (uiout, "what", | |
6130 | ptid_get_pid (b->forked_inferior_pid)); | |
6131 | ui_out_spaces (uiout, 1); | |
6132 | } | |
6133 | } | |
6134 | ||
6135 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6136 | catchpoints. */ | |
6137 | ||
6138 | static void | |
6139 | print_mention_catch_vfork (struct breakpoint *b) | |
6140 | { | |
6141 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6142 | } | |
6143 | ||
6149aea9 PA |
6144 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6145 | catchpoints. */ | |
6146 | ||
6147 | static void | |
6148 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6149 | { | |
6150 | fprintf_unfiltered (fp, "catch vfork"); | |
6151 | } | |
6152 | ||
ce78b96d JB |
6153 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6154 | ||
6155 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
6156 | { | |
6157 | insert_catch_vfork, | |
6158 | remove_catch_vfork, | |
6159 | breakpoint_hit_catch_vfork, | |
6160 | print_it_catch_vfork, | |
6161 | print_one_catch_vfork, | |
6149aea9 PA |
6162 | print_mention_catch_vfork, |
6163 | print_recreate_catch_vfork | |
ce78b96d JB |
6164 | }; |
6165 | ||
a96d9b2e SDJ |
6166 | /* Implement the "insert" breakpoint_ops method for syscall |
6167 | catchpoints. */ | |
6168 | ||
6169 | static void | |
6170 | insert_catch_syscall (struct breakpoint *b) | |
6171 | { | |
6172 | struct inferior *inf = current_inferior (); | |
6173 | ||
6174 | ++inf->total_syscalls_count; | |
6175 | if (!b->syscalls_to_be_caught) | |
6176 | ++inf->any_syscall_count; | |
6177 | else | |
6178 | { | |
6179 | int i, iter; | |
cc59ec59 | 6180 | |
a96d9b2e SDJ |
6181 | for (i = 0; |
6182 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6183 | i++) | |
6184 | { | |
6185 | int elem; | |
cc59ec59 | 6186 | |
a96d9b2e SDJ |
6187 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6188 | { | |
6189 | int old_size = VEC_length (int, inf->syscalls_counts); | |
6190 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
6191 | uintptr_t vec_addr; | |
6192 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6193 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6194 | vec_addr_offset; | |
6195 | memset ((void *) vec_addr, 0, | |
6196 | (iter + 1 - old_size) * sizeof (int)); | |
6197 | } | |
6198 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6199 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6200 | } | |
6201 | } | |
6202 | ||
6203 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6204 | inf->total_syscalls_count != 0, | |
6205 | inf->any_syscall_count, | |
6206 | VEC_length (int, inf->syscalls_counts), | |
6207 | VEC_address (int, inf->syscalls_counts)); | |
6208 | } | |
6209 | ||
6210 | /* Implement the "remove" breakpoint_ops method for syscall | |
6211 | catchpoints. */ | |
6212 | ||
6213 | static int | |
6214 | remove_catch_syscall (struct breakpoint *b) | |
6215 | { | |
6216 | struct inferior *inf = current_inferior (); | |
6217 | ||
6218 | --inf->total_syscalls_count; | |
6219 | if (!b->syscalls_to_be_caught) | |
6220 | --inf->any_syscall_count; | |
6221 | else | |
6222 | { | |
6223 | int i, iter; | |
cc59ec59 | 6224 | |
a96d9b2e SDJ |
6225 | for (i = 0; |
6226 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6227 | i++) | |
6228 | { | |
6229 | int elem; | |
6230 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6231 | /* Shouldn't happen. */ | |
6232 | continue; | |
6233 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6234 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6235 | } | |
6236 | } | |
6237 | ||
6238 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6239 | inf->total_syscalls_count != 0, | |
6240 | inf->any_syscall_count, | |
6241 | VEC_length (int, inf->syscalls_counts), | |
6242 | VEC_address (int, inf->syscalls_counts)); | |
6243 | } | |
6244 | ||
6245 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6246 | catchpoints. */ | |
6247 | ||
6248 | static int | |
6249 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6250 | { | |
4a64f543 MS |
6251 | /* We must check if we are catching specific syscalls in this |
6252 | breakpoint. If we are, then we must guarantee that the called | |
6253 | syscall is the same syscall we are catching. */ | |
a96d9b2e SDJ |
6254 | int syscall_number = 0; |
6255 | ||
6256 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6257 | return 0; | |
6258 | ||
6259 | /* Now, checking if the syscall is the same. */ | |
6260 | if (b->syscalls_to_be_caught) | |
6261 | { | |
6262 | int i, iter; | |
cc59ec59 | 6263 | |
a96d9b2e SDJ |
6264 | for (i = 0; |
6265 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6266 | i++) | |
6267 | if (syscall_number == iter) | |
6268 | break; | |
6269 | /* Not the same. */ | |
6270 | if (!iter) | |
6271 | return 0; | |
6272 | } | |
6273 | ||
6274 | return 1; | |
6275 | } | |
6276 | ||
6277 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6278 | catchpoints. */ | |
6279 | ||
6280 | static enum print_stop_action | |
6281 | print_it_catch_syscall (struct breakpoint *b) | |
6282 | { | |
6283 | /* These are needed because we want to know in which state a | |
6284 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6285 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6286 | must print "called syscall" or "returned from syscall". */ | |
6287 | ptid_t ptid; | |
6288 | struct target_waitstatus last; | |
6289 | struct syscall s; | |
6290 | struct cleanup *old_chain; | |
6291 | char *syscall_id; | |
6292 | ||
6293 | get_last_target_status (&ptid, &last); | |
6294 | ||
6295 | get_syscall_by_number (last.value.syscall_number, &s); | |
6296 | ||
6297 | annotate_catchpoint (b->number); | |
6298 | ||
6299 | if (s.name == NULL) | |
6300 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6301 | else | |
6302 | syscall_id = xstrprintf ("'%s'", s.name); | |
6303 | ||
6304 | old_chain = make_cleanup (xfree, syscall_id); | |
6305 | ||
6306 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6307 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6308 | b->number, syscall_id); | |
6309 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6310 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6311 | b->number, syscall_id); | |
6312 | ||
6313 | do_cleanups (old_chain); | |
6314 | ||
6315 | return PRINT_SRC_AND_LOC; | |
6316 | } | |
6317 | ||
6318 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6319 | catchpoints. */ | |
6320 | ||
6321 | static void | |
6322 | print_one_catch_syscall (struct breakpoint *b, | |
6323 | struct bp_location **last_loc) | |
6324 | { | |
6325 | struct value_print_options opts; | |
6326 | ||
6327 | get_user_print_options (&opts); | |
4a64f543 MS |
6328 | /* Field 4, the address, is omitted (which makes the columns not |
6329 | line up too nicely with the headers, but the effect is relatively | |
6330 | readable). */ | |
a96d9b2e SDJ |
6331 | if (opts.addressprint) |
6332 | ui_out_field_skip (uiout, "addr"); | |
6333 | annotate_field (5); | |
6334 | ||
6335 | if (b->syscalls_to_be_caught | |
6336 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6337 | ui_out_text (uiout, "syscalls \""); | |
6338 | else | |
6339 | ui_out_text (uiout, "syscall \""); | |
6340 | ||
6341 | if (b->syscalls_to_be_caught) | |
6342 | { | |
6343 | int i, iter; | |
6344 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6345 | |
a96d9b2e SDJ |
6346 | for (i = 0; |
6347 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6348 | i++) | |
6349 | { | |
6350 | char *x = text; | |
6351 | struct syscall s; | |
6352 | get_syscall_by_number (iter, &s); | |
6353 | ||
6354 | if (s.name != NULL) | |
6355 | text = xstrprintf ("%s%s, ", text, s.name); | |
6356 | else | |
6357 | text = xstrprintf ("%s%d, ", text, iter); | |
6358 | ||
6359 | /* We have to xfree the last 'text' (now stored at 'x') | |
6360 | because xstrprintf dinamically allocates new space for it | |
6361 | on every call. */ | |
6362 | xfree (x); | |
6363 | } | |
6364 | /* Remove the last comma. */ | |
6365 | text[strlen (text) - 2] = '\0'; | |
6366 | ui_out_field_string (uiout, "what", text); | |
6367 | } | |
6368 | else | |
6369 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6370 | ui_out_text (uiout, "\" "); | |
6371 | } | |
6372 | ||
6373 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6374 | catchpoints. */ | |
6375 | ||
6376 | static void | |
6377 | print_mention_catch_syscall (struct breakpoint *b) | |
6378 | { | |
6379 | if (b->syscalls_to_be_caught) | |
6380 | { | |
6381 | int i, iter; | |
6382 | ||
6383 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6384 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6385 | else | |
6386 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6387 | ||
6388 | for (i = 0; | |
6389 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6390 | i++) | |
6391 | { | |
6392 | struct syscall s; | |
6393 | get_syscall_by_number (iter, &s); | |
6394 | ||
6395 | if (s.name) | |
6396 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6397 | else | |
6398 | printf_filtered (" %d", s.number); | |
6399 | } | |
6400 | printf_filtered (")"); | |
6401 | } | |
6402 | else | |
6403 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6404 | b->number); | |
6405 | } | |
6406 | ||
6149aea9 PA |
6407 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6408 | catchpoints. */ | |
6409 | ||
6410 | static void | |
6411 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6412 | { | |
6413 | fprintf_unfiltered (fp, "catch syscall"); | |
6414 | ||
6415 | if (b->syscalls_to_be_caught) | |
6416 | { | |
6417 | int i, iter; | |
6418 | ||
6419 | for (i = 0; | |
6420 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6421 | i++) | |
6422 | { | |
6423 | struct syscall s; | |
6424 | ||
6425 | get_syscall_by_number (iter, &s); | |
6426 | if (s.name) | |
6427 | fprintf_unfiltered (fp, " %s", s.name); | |
6428 | else | |
6429 | fprintf_unfiltered (fp, " %d", s.number); | |
6430 | } | |
6431 | } | |
6432 | } | |
6433 | ||
a96d9b2e SDJ |
6434 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6435 | ||
6436 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6437 | { | |
6438 | insert_catch_syscall, | |
6439 | remove_catch_syscall, | |
6440 | breakpoint_hit_catch_syscall, | |
6441 | print_it_catch_syscall, | |
6442 | print_one_catch_syscall, | |
6149aea9 PA |
6443 | print_mention_catch_syscall, |
6444 | print_recreate_catch_syscall | |
a96d9b2e SDJ |
6445 | }; |
6446 | ||
6447 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6448 | ||
6449 | static int | |
6450 | syscall_catchpoint_p (struct breakpoint *b) | |
6451 | { | |
6452 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6453 | } | |
6454 | ||
6455 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6456 | but does NOT mention it nor update the global location list. | |
6457 | This is useful if you need to fill more fields in the | |
6458 | struct breakpoint before calling mention. | |
ce78b96d JB |
6459 | |
6460 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6461 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6462 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6463 | to the catchpoint. */ | |
6464 | ||
6465 | static struct breakpoint * | |
a96d9b2e SDJ |
6466 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6467 | char *cond_string, | |
6468 | struct breakpoint_ops *ops) | |
c906108c | 6469 | { |
c5aa993b JM |
6470 | struct symtab_and_line sal; |
6471 | struct breakpoint *b; | |
c5aa993b | 6472 | |
fe39c653 | 6473 | init_sal (&sal); |
6c95b8df | 6474 | sal.pspace = current_program_space; |
c5aa993b | 6475 | |
a6d9a66e | 6476 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6477 | set_breakpoint_count (breakpoint_count + 1); |
6478 | b->number = breakpoint_count; | |
ce78b96d | 6479 | |
1b36a34b | 6480 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6481 | b->thread = -1; |
c906108c | 6482 | b->addr_string = NULL; |
b5de0fa7 EZ |
6483 | b->enable_state = bp_enabled; |
6484 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6485 | b->ops = ops; |
c5aa993b | 6486 | |
a96d9b2e SDJ |
6487 | return b; |
6488 | } | |
6489 | ||
6490 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6491 | ||
6492 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6493 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6494 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6495 | to the catchpoint. */ | |
6496 | ||
6497 | static struct breakpoint * | |
6498 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6499 | char *cond_string, struct breakpoint_ops *ops) | |
6500 | { | |
6501 | struct breakpoint *b = | |
6502 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6503 | ||
c906108c | 6504 | mention (b); |
ce78b96d | 6505 | update_global_location_list (1); |
c906108c | 6506 | |
ce78b96d | 6507 | return b; |
c906108c | 6508 | } |
c5aa993b | 6509 | |
9b70b993 | 6510 | static void |
a6d9a66e UW |
6511 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6512 | int tempflag, char *cond_string, | |
ce78b96d | 6513 | struct breakpoint_ops *ops) |
c906108c | 6514 | { |
a6d9a66e UW |
6515 | struct breakpoint *b |
6516 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6517 | |
6518 | /* FIXME: We should put this information in a breakpoint private data | |
6519 | area. */ | |
6520 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6521 | } |
6522 | ||
fe798b75 JB |
6523 | /* Exec catchpoints. */ |
6524 | ||
9b70b993 | 6525 | static void |
fe798b75 | 6526 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6527 | { |
fe798b75 JB |
6528 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6529 | } | |
c906108c | 6530 | |
fe798b75 JB |
6531 | static int |
6532 | remove_catch_exec (struct breakpoint *b) | |
6533 | { | |
6534 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6535 | } | |
c906108c | 6536 | |
fe798b75 JB |
6537 | static int |
6538 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6539 | { | |
6540 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6541 | } | |
c906108c | 6542 | |
fe798b75 JB |
6543 | static enum print_stop_action |
6544 | print_it_catch_exec (struct breakpoint *b) | |
6545 | { | |
6546 | annotate_catchpoint (b->number); | |
6547 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6548 | b->exec_pathname); | |
6549 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6550 | } |
6551 | ||
fe798b75 | 6552 | static void |
a6d9a66e | 6553 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6554 | { |
6555 | struct value_print_options opts; | |
6556 | ||
6557 | get_user_print_options (&opts); | |
6558 | ||
6559 | /* Field 4, the address, is omitted (which makes the columns | |
6560 | not line up too nicely with the headers, but the effect | |
6561 | is relatively readable). */ | |
6562 | if (opts.addressprint) | |
6563 | ui_out_field_skip (uiout, "addr"); | |
6564 | annotate_field (5); | |
6565 | ui_out_text (uiout, "exec"); | |
6566 | if (b->exec_pathname != NULL) | |
6567 | { | |
6568 | ui_out_text (uiout, ", program \""); | |
6569 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6570 | ui_out_text (uiout, "\" "); | |
6571 | } | |
6572 | } | |
6573 | ||
6574 | static void | |
6575 | print_mention_catch_exec (struct breakpoint *b) | |
6576 | { | |
6577 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6578 | } | |
6579 | ||
6149aea9 PA |
6580 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6581 | catchpoints. */ | |
6582 | ||
6583 | static void | |
6584 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6585 | { | |
6586 | fprintf_unfiltered (fp, "catch exec"); | |
6587 | } | |
6588 | ||
fe798b75 JB |
6589 | static struct breakpoint_ops catch_exec_breakpoint_ops = |
6590 | { | |
6591 | insert_catch_exec, | |
6592 | remove_catch_exec, | |
6593 | breakpoint_hit_catch_exec, | |
6594 | print_it_catch_exec, | |
6595 | print_one_catch_exec, | |
6149aea9 PA |
6596 | print_mention_catch_exec, |
6597 | print_recreate_catch_exec | |
fe798b75 JB |
6598 | }; |
6599 | ||
a96d9b2e SDJ |
6600 | static void |
6601 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6602 | struct breakpoint_ops *ops) | |
6603 | { | |
6604 | struct gdbarch *gdbarch = get_current_arch (); | |
6605 | struct breakpoint *b = | |
6606 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6607 | ||
6608 | b->syscalls_to_be_caught = filter; | |
6609 | ||
6610 | /* Now, we have to mention the breakpoint and update the global | |
6611 | location list. */ | |
6612 | mention (b); | |
6613 | update_global_location_list (1); | |
6614 | } | |
6615 | ||
c906108c | 6616 | static int |
fba45db2 | 6617 | hw_breakpoint_used_count (void) |
c906108c | 6618 | { |
52f0bd74 | 6619 | struct breakpoint *b; |
c906108c SS |
6620 | int i = 0; |
6621 | ||
6622 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6623 | { |
d6b74ac4 | 6624 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6625 | i++; |
6626 | } | |
c906108c SS |
6627 | |
6628 | return i; | |
6629 | } | |
6630 | ||
6631 | static int | |
fba45db2 | 6632 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6633 | { |
52f0bd74 | 6634 | struct breakpoint *b; |
c906108c SS |
6635 | int i = 0; |
6636 | ||
6637 | *other_type_used = 0; | |
6638 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6639 | { |
468d015d | 6640 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6641 | { |
6642 | if (b->type == type) | |
6643 | i++; | |
cc60f2e3 | 6644 | else if (is_hardware_watchpoint (b)) |
c5aa993b JM |
6645 | *other_type_used = 1; |
6646 | } | |
6647 | } | |
c906108c SS |
6648 | return i; |
6649 | } | |
6650 | ||
c906108c | 6651 | void |
fba45db2 | 6652 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6653 | { |
c5aa993b | 6654 | struct breakpoint *b; |
c906108c SS |
6655 | |
6656 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6657 | { |
cc60f2e3 | 6658 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 6659 | { |
b5de0fa7 | 6660 | b->enable_state = bp_call_disabled; |
b60e7edf | 6661 | update_global_location_list (0); |
c5aa993b JM |
6662 | } |
6663 | } | |
c906108c SS |
6664 | } |
6665 | ||
6666 | void | |
fba45db2 | 6667 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6668 | { |
c5aa993b | 6669 | struct breakpoint *b; |
c906108c SS |
6670 | |
6671 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6672 | { |
cc60f2e3 | 6673 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 6674 | { |
b5de0fa7 | 6675 | b->enable_state = bp_enabled; |
b60e7edf | 6676 | update_global_location_list (1); |
c5aa993b JM |
6677 | } |
6678 | } | |
c906108c SS |
6679 | } |
6680 | ||
8bea4e01 UW |
6681 | void |
6682 | disable_breakpoints_before_startup (void) | |
6683 | { | |
6684 | struct breakpoint *b; | |
6685 | int found = 0; | |
6686 | ||
6687 | ALL_BREAKPOINTS (b) | |
6688 | { | |
6c95b8df PA |
6689 | if (b->pspace != current_program_space) |
6690 | continue; | |
6691 | ||
8bea4e01 UW |
6692 | if ((b->type == bp_breakpoint |
6693 | || b->type == bp_hardware_breakpoint) | |
6694 | && breakpoint_enabled (b)) | |
6695 | { | |
6696 | b->enable_state = bp_startup_disabled; | |
6697 | found = 1; | |
6698 | } | |
6699 | } | |
6700 | ||
6701 | if (found) | |
6702 | update_global_location_list (0); | |
6703 | ||
6c95b8df | 6704 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6705 | } |
6706 | ||
6707 | void | |
6708 | enable_breakpoints_after_startup (void) | |
6709 | { | |
6710 | struct breakpoint *b; | |
6711 | int found = 0; | |
6712 | ||
6c95b8df | 6713 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6714 | |
6715 | ALL_BREAKPOINTS (b) | |
6716 | { | |
6c95b8df PA |
6717 | if (b->pspace != current_program_space) |
6718 | continue; | |
6719 | ||
8bea4e01 UW |
6720 | if ((b->type == bp_breakpoint |
6721 | || b->type == bp_hardware_breakpoint) | |
6722 | && b->enable_state == bp_startup_disabled) | |
6723 | { | |
6724 | b->enable_state = bp_enabled; | |
6725 | found = 1; | |
6726 | } | |
6727 | } | |
6728 | ||
6729 | if (found) | |
6730 | breakpoint_re_set (); | |
6731 | } | |
6732 | ||
c906108c SS |
6733 | |
6734 | /* Set a breakpoint that will evaporate an end of command | |
6735 | at address specified by SAL. | |
6736 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6737 | ||
6738 | struct breakpoint * | |
a6d9a66e UW |
6739 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6740 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6741 | { |
52f0bd74 | 6742 | struct breakpoint *b; |
edb3359d DJ |
6743 | |
6744 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6745 | one. */ | |
6746 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6747 | ||
a6d9a66e | 6748 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6749 | b->enable_state = bp_enabled; |
6750 | b->disposition = disp_donttouch; | |
818dd999 | 6751 | b->frame_id = frame_id; |
c906108c | 6752 | |
4a64f543 MS |
6753 | /* If we're debugging a multi-threaded program, then we want |
6754 | momentary breakpoints to be active in only a single thread of | |
6755 | control. */ | |
39f77062 KB |
6756 | if (in_thread_list (inferior_ptid)) |
6757 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6758 | |
b60e7edf | 6759 | update_global_location_list_nothrow (1); |
74960c60 | 6760 | |
c906108c SS |
6761 | return b; |
6762 | } | |
611c83ae | 6763 | |
e58b0e63 PA |
6764 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6765 | ORIG is NULL. */ | |
6766 | ||
6767 | struct breakpoint * | |
6768 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6769 | { | |
6770 | struct breakpoint *copy; | |
6771 | ||
6772 | /* If there's nothing to clone, then return nothing. */ | |
6773 | if (orig == NULL) | |
6774 | return NULL; | |
6775 | ||
a6d9a66e | 6776 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6777 | copy->loc = allocate_bp_location (copy); |
6778 | set_breakpoint_location_function (copy->loc); | |
6779 | ||
a6d9a66e | 6780 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6781 | copy->loc->requested_address = orig->loc->requested_address; |
6782 | copy->loc->address = orig->loc->address; | |
6783 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6784 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6785 | |
6786 | if (orig->source_file == NULL) | |
6787 | copy->source_file = NULL; | |
6788 | else | |
6789 | copy->source_file = xstrdup (orig->source_file); | |
6790 | ||
6791 | copy->line_number = orig->line_number; | |
6792 | copy->frame_id = orig->frame_id; | |
6793 | copy->thread = orig->thread; | |
6c95b8df | 6794 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6795 | |
6796 | copy->enable_state = bp_enabled; | |
6797 | copy->disposition = disp_donttouch; | |
6798 | copy->number = internal_breakpoint_number--; | |
6799 | ||
6800 | update_global_location_list_nothrow (0); | |
6801 | return copy; | |
6802 | } | |
6803 | ||
611c83ae | 6804 | struct breakpoint * |
a6d9a66e UW |
6805 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6806 | enum bptype type) | |
611c83ae PA |
6807 | { |
6808 | struct symtab_and_line sal; | |
6809 | ||
6810 | sal = find_pc_line (pc, 0); | |
6811 | sal.pc = pc; | |
6812 | sal.section = find_pc_overlay (pc); | |
6813 | sal.explicit_pc = 1; | |
6814 | ||
a6d9a66e | 6815 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6816 | } |
c906108c | 6817 | \f |
c5aa993b | 6818 | |
c906108c SS |
6819 | /* Tell the user we have just set a breakpoint B. */ |
6820 | ||
6821 | static void | |
fba45db2 | 6822 | mention (struct breakpoint *b) |
c906108c SS |
6823 | { |
6824 | int say_where = 0; | |
fa8a61dc | 6825 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6826 | struct value_print_options opts; |
6827 | ||
6828 | get_user_print_options (&opts); | |
8b93c638 | 6829 | |
9a4105ab AC |
6830 | /* FIXME: This is misplaced; mention() is called by things (like |
6831 | hitting a watchpoint) other than breakpoint creation. It should | |
6832 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6833 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6834 | observer_notify_breakpoint_created (b->number); |
c906108c | 6835 | |
3086aeae DJ |
6836 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6837 | b->ops->print_mention (b); | |
6838 | else | |
6839 | switch (b->type) | |
6840 | { | |
6841 | case bp_none: | |
a3f17187 | 6842 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6843 | break; |
6844 | case bp_watchpoint: | |
6845 | ui_out_text (uiout, "Watchpoint "); | |
6846 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6847 | ui_out_field_int (uiout, "number", b->number); | |
6848 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6849 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6850 | do_cleanups (ui_out_chain); |
6851 | break; | |
6852 | case bp_hardware_watchpoint: | |
6853 | ui_out_text (uiout, "Hardware watchpoint "); | |
6854 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6855 | ui_out_field_int (uiout, "number", b->number); | |
6856 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6857 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6858 | do_cleanups (ui_out_chain); |
6859 | break; | |
6860 | case bp_read_watchpoint: | |
6861 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6862 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6863 | ui_out_field_int (uiout, "number", b->number); | |
6864 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6865 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6866 | do_cleanups (ui_out_chain); |
6867 | break; | |
6868 | case bp_access_watchpoint: | |
6869 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6870 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6871 | ui_out_field_int (uiout, "number", b->number); | |
6872 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6873 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6874 | do_cleanups (ui_out_chain); |
6875 | break; | |
6876 | case bp_breakpoint: | |
6877 | if (ui_out_is_mi_like_p (uiout)) | |
6878 | { | |
6879 | say_where = 0; | |
6880 | break; | |
6881 | } | |
2cec12e5 AR |
6882 | if (b->disposition == disp_del) |
6883 | printf_filtered (_("Temporary breakpoint")); | |
6884 | else | |
6885 | printf_filtered (_("Breakpoint")); | |
6886 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6887 | say_where = 1; |
6888 | break; | |
6889 | case bp_hardware_breakpoint: | |
6890 | if (ui_out_is_mi_like_p (uiout)) | |
6891 | { | |
6892 | say_where = 0; | |
6893 | break; | |
6894 | } | |
a3f17187 | 6895 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6896 | say_where = 1; |
6897 | break; | |
1042e4c0 SS |
6898 | case bp_tracepoint: |
6899 | if (ui_out_is_mi_like_p (uiout)) | |
6900 | { | |
6901 | say_where = 0; | |
6902 | break; | |
6903 | } | |
6904 | printf_filtered (_("Tracepoint")); | |
6905 | printf_filtered (_(" %d"), b->number); | |
6906 | say_where = 1; | |
6907 | break; | |
7a697b8d SS |
6908 | case bp_fast_tracepoint: |
6909 | if (ui_out_is_mi_like_p (uiout)) | |
6910 | { | |
6911 | say_where = 0; | |
6912 | break; | |
6913 | } | |
6914 | printf_filtered (_("Fast tracepoint")); | |
6915 | printf_filtered (_(" %d"), b->number); | |
6916 | say_where = 1; | |
6917 | break; | |
0fb4aa4b PA |
6918 | case bp_static_tracepoint: |
6919 | if (ui_out_is_mi_like_p (uiout)) | |
6920 | { | |
6921 | say_where = 0; | |
6922 | break; | |
6923 | } | |
6924 | printf_filtered (_("Static tracepoint")); | |
6925 | printf_filtered (_(" %d"), b->number); | |
6926 | say_where = 1; | |
6927 | break; | |
3086aeae DJ |
6928 | |
6929 | case bp_until: | |
6930 | case bp_finish: | |
6931 | case bp_longjmp: | |
6932 | case bp_longjmp_resume: | |
186c406b TT |
6933 | case bp_exception: |
6934 | case bp_exception_resume: | |
3086aeae | 6935 | case bp_step_resume: |
3086aeae | 6936 | case bp_call_dummy: |
aa7d318d | 6937 | case bp_std_terminate: |
3086aeae DJ |
6938 | case bp_watchpoint_scope: |
6939 | case bp_shlib_event: | |
6940 | case bp_thread_event: | |
6941 | case bp_overlay_event: | |
4efc6507 | 6942 | case bp_jit_event: |
0fd8e87f | 6943 | case bp_longjmp_master: |
aa7d318d | 6944 | case bp_std_terminate_master: |
186c406b | 6945 | case bp_exception_master: |
3086aeae DJ |
6946 | break; |
6947 | } | |
c906108c | 6948 | |
c906108c SS |
6949 | if (say_where) |
6950 | { | |
a3f17187 AC |
6951 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6952 | single string. */ | |
0d381245 | 6953 | if (b->loc == NULL) |
c906108c | 6954 | { |
a3f17187 | 6955 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6956 | } |
6957 | else | |
6958 | { | |
79a45b7d | 6959 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6960 | { |
6961 | printf_filtered (" at "); | |
5af949e3 UW |
6962 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6963 | gdb_stdout); | |
0101ce28 JJ |
6964 | } |
6965 | if (b->source_file) | |
6966 | printf_filtered (": file %s, line %d.", | |
6967 | b->source_file, b->line_number); | |
0d381245 VP |
6968 | |
6969 | if (b->loc->next) | |
6970 | { | |
6971 | struct bp_location *loc = b->loc; | |
6972 | int n = 0; | |
6973 | for (; loc; loc = loc->next) | |
6974 | ++n; | |
6975 | printf_filtered (" (%d locations)", n); | |
6976 | } | |
6977 | ||
c906108c | 6978 | } |
c906108c | 6979 | } |
9dc5e2a9 | 6980 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6981 | return; |
c906108c SS |
6982 | printf_filtered ("\n"); |
6983 | } | |
c906108c | 6984 | \f |
c5aa993b | 6985 | |
0d381245 | 6986 | static struct bp_location * |
39d61571 | 6987 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6988 | const struct symtab_and_line *sal) |
6989 | { | |
6990 | struct bp_location *loc, **tmp; | |
6991 | ||
39d61571 | 6992 | loc = allocate_bp_location (b); |
0d381245 VP |
6993 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6994 | ; | |
6995 | *tmp = loc; | |
a6d9a66e UW |
6996 | loc->gdbarch = get_sal_arch (*sal); |
6997 | if (!loc->gdbarch) | |
6998 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6999 | loc->requested_address = sal->pc; |
a6d9a66e UW |
7000 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
7001 | loc->requested_address, b->type); | |
6c95b8df PA |
7002 | loc->pspace = sal->pspace; |
7003 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
7004 | loc->section = sal->section; |
7005 | ||
7006 | set_breakpoint_location_function (loc); | |
7007 | return loc; | |
7008 | } | |
514f746b AR |
7009 | \f |
7010 | ||
7011 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7012 | return 0 otherwise. */ | |
7013 | ||
7014 | static int | |
7015 | bp_loc_is_permanent (struct bp_location *loc) | |
7016 | { | |
7017 | int len; | |
7018 | CORE_ADDR addr; | |
7019 | const gdb_byte *brk; | |
7020 | gdb_byte *target_mem; | |
939c61fa JK |
7021 | struct cleanup *cleanup; |
7022 | int retval = 0; | |
514f746b AR |
7023 | |
7024 | gdb_assert (loc != NULL); | |
7025 | ||
7026 | addr = loc->address; | |
a6d9a66e | 7027 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7028 | |
939c61fa JK |
7029 | /* Software breakpoints unsupported? */ |
7030 | if (brk == NULL) | |
7031 | return 0; | |
7032 | ||
514f746b AR |
7033 | target_mem = alloca (len); |
7034 | ||
939c61fa JK |
7035 | /* Enable the automatic memory restoration from breakpoints while |
7036 | we read the memory. Otherwise we could say about our temporary | |
7037 | breakpoints they are permanent. */ | |
6c95b8df PA |
7038 | cleanup = save_current_space_and_thread (); |
7039 | ||
7040 | switch_to_program_space_and_thread (loc->pspace); | |
7041 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7042 | |
514f746b AR |
7043 | if (target_read_memory (loc->address, target_mem, len) == 0 |
7044 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 7045 | retval = 1; |
514f746b | 7046 | |
939c61fa JK |
7047 | do_cleanups (cleanup); |
7048 | ||
7049 | return retval; | |
514f746b AR |
7050 | } |
7051 | ||
7052 | ||
c3f6f71d | 7053 | |
018d34a4 VP |
7054 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7055 | as textual description of the location, and COND_STRING | |
db107f19 | 7056 | as condition expression. */ |
018d34a4 VP |
7057 | |
7058 | static void | |
8cdf0e15 VP |
7059 | create_breakpoint_sal (struct gdbarch *gdbarch, |
7060 | struct symtabs_and_lines sals, char *addr_string, | |
7061 | char *cond_string, | |
7062 | enum bptype type, enum bpdisp disposition, | |
7063 | int thread, int task, int ignore_count, | |
84f4c1fe PM |
7064 | struct breakpoint_ops *ops, int from_tty, |
7065 | int enabled, int internal) | |
018d34a4 | 7066 | { |
0d381245 VP |
7067 | struct breakpoint *b = NULL; |
7068 | int i; | |
018d34a4 VP |
7069 | |
7070 | if (type == bp_hardware_breakpoint) | |
7071 | { | |
7072 | int i = hw_breakpoint_used_count (); | |
7073 | int target_resources_ok = | |
d92524f1 | 7074 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
7075 | i + 1, 0); |
7076 | if (target_resources_ok == 0) | |
7077 | error (_("No hardware breakpoint support in the target.")); | |
7078 | else if (target_resources_ok < 0) | |
7079 | error (_("Hardware breakpoints used exceeds limit.")); | |
7080 | } | |
7081 | ||
6c95b8df PA |
7082 | gdb_assert (sals.nelts > 0); |
7083 | ||
0d381245 VP |
7084 | for (i = 0; i < sals.nelts; ++i) |
7085 | { | |
7086 | struct symtab_and_line sal = sals.sals[i]; | |
7087 | struct bp_location *loc; | |
7088 | ||
7089 | if (from_tty) | |
5af949e3 UW |
7090 | { |
7091 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7092 | if (!loc_gdbarch) | |
7093 | loc_gdbarch = gdbarch; | |
7094 | ||
7095 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7096 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7097 | } |
0d381245 VP |
7098 | |
7099 | if (i == 0) | |
7100 | { | |
a6d9a66e | 7101 | b = set_raw_breakpoint (gdbarch, sal, type); |
84f4c1fe | 7102 | set_breakpoint_number (internal, b); |
0d381245 | 7103 | b->thread = thread; |
4a306c9a | 7104 | b->task = task; |
018d34a4 | 7105 | |
0d381245 VP |
7106 | b->cond_string = cond_string; |
7107 | b->ignore_count = ignore_count; | |
41447f92 | 7108 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7109 | b->disposition = disposition; |
6c95b8df PA |
7110 | b->pspace = sals.sals[0].pspace; |
7111 | ||
0fb4aa4b PA |
7112 | if (type == bp_static_tracepoint) |
7113 | { | |
7114 | struct static_tracepoint_marker marker; | |
7115 | ||
7116 | if (is_marker_spec (addr_string)) | |
7117 | { | |
7118 | /* We already know the marker exists, otherwise, we | |
7119 | wouldn't see a sal for it. */ | |
7120 | char *p = &addr_string[3]; | |
7121 | char *endp; | |
7122 | char *marker_str; | |
7123 | int i; | |
7124 | ||
7125 | while (*p == ' ' || *p == '\t') | |
7126 | p++; | |
7127 | ||
7128 | endp = p; | |
7129 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7130 | endp++; | |
7131 | ||
7132 | marker_str = savestring (p, endp - p); | |
7133 | b->static_trace_marker_id = marker_str; | |
7134 | ||
7135 | printf_filtered (_("Probed static tracepoint marker \"%s\"\n"), | |
7136 | b->static_trace_marker_id); | |
7137 | } | |
7138 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7139 | { | |
7140 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
7141 | release_static_tracepoint_marker (&marker); | |
7142 | ||
7143 | printf_filtered (_("Probed static tracepoint marker \"%s\"\n"), | |
7144 | b->static_trace_marker_id); | |
7145 | } | |
7146 | else | |
7147 | warning (_("\ | |
7148 | Couldn't determine the static tracepoint marker to probe")); | |
7149 | } | |
7150 | ||
6c95b8df | 7151 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7152 | && (b->type == bp_breakpoint |
7153 | || b->type == bp_hardware_breakpoint)) | |
7154 | b->enable_state = bp_startup_disabled; | |
7155 | ||
0d381245 VP |
7156 | loc = b->loc; |
7157 | } | |
7158 | else | |
018d34a4 | 7159 | { |
39d61571 | 7160 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7161 | } |
7162 | ||
514f746b AR |
7163 | if (bp_loc_is_permanent (loc)) |
7164 | make_breakpoint_permanent (b); | |
7165 | ||
0d381245 VP |
7166 | if (b->cond_string) |
7167 | { | |
7168 | char *arg = b->cond_string; | |
d32a6982 | 7169 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7170 | if (*arg) |
db107f19 | 7171 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7172 | } |
0d381245 | 7173 | } |
018d34a4 VP |
7174 | |
7175 | if (addr_string) | |
7176 | b->addr_string = addr_string; | |
7177 | else | |
7178 | /* addr_string has to be used or breakpoint_re_set will delete | |
7179 | me. */ | |
5af949e3 UW |
7180 | b->addr_string |
7181 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 7182 | |
604133b5 | 7183 | b->ops = ops; |
84f4c1fe PM |
7184 | if (internal) |
7185 | /* Do not mention breakpoints with a negative number, but do | |
7186 | notify observers. */ | |
7187 | observer_notify_breakpoint_created (b->number); | |
7188 | else | |
7189 | mention (b); | |
018d34a4 VP |
7190 | } |
7191 | ||
ed0616c6 VP |
7192 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
7193 | elements to fill the void space. */ | |
2c0b251b PA |
7194 | static void |
7195 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
7196 | { |
7197 | int i = index_to_remove+1; | |
7198 | int last_index = sal->nelts-1; | |
7199 | ||
7200 | for (;i <= last_index; ++i) | |
7201 | sal->sals[i-1] = sal->sals[i]; | |
7202 | ||
7203 | --(sal->nelts); | |
7204 | } | |
7205 | ||
6c95b8df PA |
7206 | /* If appropriate, obtains all sals that correspond to the same file |
7207 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
7208 | will want to set a breakpoint at foo.c:line, and not really care | |
7209 | about program spaces. This is done only if SAL does not have | |
7210 | explicit PC and has line and file information. If we got just a | |
7211 | single expanded sal, return the original. | |
ed0616c6 | 7212 | |
6c95b8df PA |
7213 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
7214 | which the name of enclosing function is different from SAL. This | |
7215 | makes sure that if we have breakpoint originally set in template | |
7216 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
7217 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 7218 | |
2c0b251b | 7219 | static struct symtabs_and_lines |
ed0616c6 VP |
7220 | expand_line_sal_maybe (struct symtab_and_line sal) |
7221 | { | |
7222 | struct symtabs_and_lines expanded; | |
7223 | CORE_ADDR original_pc = sal.pc; | |
7224 | char *original_function = NULL; | |
7225 | int found; | |
7226 | int i; | |
6c95b8df | 7227 | struct cleanup *old_chain; |
ed0616c6 VP |
7228 | |
7229 | /* If we have explicit pc, don't expand. | |
7230 | If we have no line number, we can't expand. */ | |
7231 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
7232 | { | |
7233 | expanded.nelts = 1; | |
7234 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7235 | expanded.sals[0] = sal; | |
7236 | return expanded; | |
7237 | } | |
7238 | ||
7239 | sal.pc = 0; | |
6c95b8df PA |
7240 | |
7241 | old_chain = save_current_space_and_thread (); | |
7242 | ||
7243 | switch_to_program_space_and_thread (sal.pspace); | |
7244 | ||
ed0616c6 | 7245 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
7246 | |
7247 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 7248 | expanded = expand_line_sal (sal); |
6c95b8df | 7249 | |
ed0616c6 VP |
7250 | if (expanded.nelts == 1) |
7251 | { | |
3dba1c98 JB |
7252 | /* We had one sal, we got one sal. Return that sal, adjusting it |
7253 | past the function prologue if necessary. */ | |
ed0616c6 VP |
7254 | xfree (expanded.sals); |
7255 | expanded.nelts = 1; | |
7256 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7257 | sal.pc = original_pc; | |
7258 | expanded.sals[0] = sal; | |
3dba1c98 | 7259 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 7260 | do_cleanups (old_chain); |
ed0616c6 VP |
7261 | return expanded; |
7262 | } | |
7263 | ||
7264 | if (!sal.explicit_line) | |
7265 | { | |
7266 | CORE_ADDR func_addr, func_end; | |
7267 | for (i = 0; i < expanded.nelts; ++i) | |
7268 | { | |
7269 | CORE_ADDR pc = expanded.sals[i].pc; | |
7270 | char *this_function; | |
6c95b8df PA |
7271 | |
7272 | /* We need to switch threads as well since we're about to | |
7273 | read memory. */ | |
7274 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
7275 | ||
ed0616c6 VP |
7276 | if (find_pc_partial_function (pc, &this_function, |
7277 | &func_addr, &func_end)) | |
7278 | { | |
059fb39f PM |
7279 | if (this_function |
7280 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
7281 | { |
7282 | remove_sal (&expanded, i); | |
7283 | --i; | |
7284 | } | |
ed0616c6 VP |
7285 | } |
7286 | } | |
7287 | } | |
059acae7 UW |
7288 | |
7289 | /* Skip the function prologue if necessary. */ | |
7290 | for (i = 0; i < expanded.nelts; ++i) | |
7291 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 7292 | |
6c95b8df PA |
7293 | do_cleanups (old_chain); |
7294 | ||
ed0616c6 VP |
7295 | if (expanded.nelts <= 1) |
7296 | { | |
4a64f543 MS |
7297 | /* This is un ugly workaround. If we get zero expanded sals |
7298 | then something is really wrong. Fix that by returning the | |
7299 | original sal. */ | |
7300 | ||
ed0616c6 VP |
7301 | xfree (expanded.sals); |
7302 | expanded.nelts = 1; | |
7303 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7304 | sal.pc = original_pc; | |
7305 | expanded.sals[0] = sal; | |
7306 | return expanded; | |
7307 | } | |
7308 | ||
7309 | if (original_pc) | |
7310 | { | |
7311 | found = 0; | |
7312 | for (i = 0; i < expanded.nelts; ++i) | |
7313 | if (expanded.sals[i].pc == original_pc) | |
7314 | { | |
7315 | found = 1; | |
7316 | break; | |
7317 | } | |
7318 | gdb_assert (found); | |
7319 | } | |
7320 | ||
7321 | return expanded; | |
7322 | } | |
7323 | ||
018d34a4 VP |
7324 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
7325 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7326 | value. COND_STRING, if not NULL, specified the condition to be | |
7327 | used for all breakpoints. Essentially the only case where | |
7328 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7329 | function. In that case, it's still not possible to specify | |
7330 | separate conditions for different overloaded functions, so | |
7331 | we take just a single condition string. | |
7332 | ||
c3f6f71d | 7333 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7334 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7335 | array contents). If the function fails (error() is called), the |
7336 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7337 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7338 | |
7339 | static void | |
8cdf0e15 VP |
7340 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7341 | struct symtabs_and_lines sals, char **addr_string, | |
7342 | char *cond_string, | |
7343 | enum bptype type, enum bpdisp disposition, | |
7344 | int thread, int task, int ignore_count, | |
7345 | struct breakpoint_ops *ops, int from_tty, | |
84f4c1fe | 7346 | int enabled, int internal) |
c906108c | 7347 | { |
018d34a4 | 7348 | int i; |
cc59ec59 | 7349 | |
018d34a4 | 7350 | for (i = 0; i < sals.nelts; ++i) |
c3f6f71d | 7351 | { |
ed0616c6 VP |
7352 | struct symtabs_and_lines expanded = |
7353 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7354 | |
8cdf0e15 VP |
7355 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7356 | cond_string, type, disposition, | |
84f4c1fe PM |
7357 | thread, task, ignore_count, ops, |
7358 | from_tty, enabled, internal); | |
c3f6f71d | 7359 | } |
c3f6f71d | 7360 | } |
c906108c | 7361 | |
c3f6f71d JM |
7362 | /* Parse ARG which is assumed to be a SAL specification possibly |
7363 | followed by conditionals. On return, SALS contains an array of SAL | |
4a64f543 MS |
7364 | addresses found. ADDR_STRING contains a vector of (canonical) |
7365 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7366 | |
b9362cc7 | 7367 | static void |
c3f6f71d JM |
7368 | parse_breakpoint_sals (char **address, |
7369 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7370 | char ***addr_string, |
7371 | int *not_found_ptr) | |
c3f6f71d JM |
7372 | { |
7373 | char *addr_start = *address; | |
cc59ec59 | 7374 | |
c3f6f71d JM |
7375 | *addr_string = NULL; |
7376 | /* If no arg given, or if first arg is 'if ', use the default | |
4a64f543 | 7377 | breakpoint. */ |
c3f6f71d JM |
7378 | if ((*address) == NULL |
7379 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7380 | { |
7381 | if (default_breakpoint_valid) | |
7382 | { | |
c3f6f71d | 7383 | struct symtab_and_line sal; |
cc59ec59 | 7384 | |
4a64f543 | 7385 | init_sal (&sal); /* Initialize to zeroes. */ |
c3f6f71d | 7386 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7387 | xmalloc (sizeof (struct symtab_and_line)); |
7388 | sal.pc = default_breakpoint_address; | |
7389 | sal.line = default_breakpoint_line; | |
7390 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7391 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7392 | sal.section = find_pc_overlay (sal.pc); |
00903456 | 7393 | |
4a64f543 MS |
7394 | /* "break" without arguments is equivalent to "break *PC" |
7395 | where PC is the default_breakpoint_address. So make sure | |
7396 | to set sal.explicit_pc to prevent GDB from trying to | |
7397 | expand the list of sals to include all other instances | |
7398 | with the same symtab and line. */ | |
00903456 JK |
7399 | sal.explicit_pc = 1; |
7400 | ||
c3f6f71d JM |
7401 | sals->sals[0] = sal; |
7402 | sals->nelts = 1; | |
c906108c SS |
7403 | } |
7404 | else | |
8a3fe4f8 | 7405 | error (_("No default breakpoint address now.")); |
c906108c SS |
7406 | } |
7407 | else | |
7408 | { | |
c906108c | 7409 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7410 | current_source_symtab (which is decode_line_1's default). |
7411 | This should produce the results we want almost all of the | |
7412 | time while leaving default_breakpoint_* alone. | |
7413 | ||
1aeae86e AF |
7414 | ObjC: However, don't match an Objective-C method name which |
7415 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7416 | |
c214a6fd | 7417 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7418 | |
c906108c | 7419 | if (default_breakpoint_valid |
0378c332 | 7420 | && (!cursal.symtab |
1aeae86e AF |
7421 | || ((strchr ("+-", (*address)[0]) != NULL) |
7422 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7423 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7424 | default_breakpoint_line, addr_string, |
7425 | not_found_ptr); | |
c906108c | 7426 | else |
0101ce28 JJ |
7427 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7428 | addr_string, not_found_ptr); | |
c906108c | 7429 | } |
4a64f543 | 7430 | /* For any SAL that didn't have a canonical string, fill one in. */ |
c3f6f71d JM |
7431 | if (sals->nelts > 0 && *addr_string == NULL) |
7432 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7433 | if (addr_start != (*address)) | |
c906108c | 7434 | { |
c3f6f71d | 7435 | int i; |
cc59ec59 | 7436 | |
c3f6f71d | 7437 | for (i = 0; i < sals->nelts; i++) |
c906108c | 7438 | { |
4a64f543 | 7439 | /* Add the string if not present. */ |
c3f6f71d | 7440 | if ((*addr_string)[i] == NULL) |
cc59ec59 MS |
7441 | (*addr_string)[i] = savestring (addr_start, |
7442 | (*address) - addr_start); | |
c906108c SS |
7443 | } |
7444 | } | |
c3f6f71d | 7445 | } |
c906108c | 7446 | |
c906108c | 7447 | |
c3f6f71d | 7448 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7449 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7450 | |
b9362cc7 | 7451 | static void |
23e7acfb | 7452 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7453 | { |
7454 | int i; | |
cc59ec59 | 7455 | |
c3f6f71d | 7456 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7457 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7458 | } |
7459 | ||
7a697b8d SS |
7460 | /* Fast tracepoints may have restrictions on valid locations. For |
7461 | instance, a fast tracepoint using a jump instead of a trap will | |
7462 | likely have to overwrite more bytes than a trap would, and so can | |
7463 | only be placed where the instruction is longer than the jump, or a | |
7464 | multi-instruction sequence does not have a jump into the middle of | |
7465 | it, etc. */ | |
7466 | ||
7467 | static void | |
7468 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7469 | struct symtabs_and_lines *sals) | |
7470 | { | |
7471 | int i, rslt; | |
7472 | struct symtab_and_line *sal; | |
7473 | char *msg; | |
7474 | struct cleanup *old_chain; | |
7475 | ||
7476 | for (i = 0; i < sals->nelts; i++) | |
7477 | { | |
7478 | sal = &sals->sals[i]; | |
7479 | ||
7480 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7481 | NULL, &msg); | |
7482 | old_chain = make_cleanup (xfree, msg); | |
7483 | ||
7484 | if (!rslt) | |
7485 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7486 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7487 | ||
7488 | do_cleanups (old_chain); | |
7489 | } | |
7490 | } | |
7491 | ||
05ff989b | 7492 | static void |
0101ce28 JJ |
7493 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7494 | { | |
7495 | struct captured_parse_breakpoint_args *args = data; | |
7496 | ||
7497 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7498 | args->not_found_ptr); | |
0101ce28 JJ |
7499 | } |
7500 | ||
018d34a4 VP |
7501 | /* Given TOK, a string specification of condition and thread, as |
7502 | accepted by the 'break' command, extract the condition | |
7503 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7504 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7505 | If no condition is found, *COND_STRING is set to NULL. |
7506 | If no thread is found, *THREAD is set to -1. */ | |
7507 | static void | |
7508 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7509 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7510 | { |
7511 | *cond_string = NULL; | |
7512 | *thread = -1; | |
7513 | while (tok && *tok) | |
7514 | { | |
7515 | char *end_tok; | |
7516 | int toklen; | |
7517 | char *cond_start = NULL; | |
7518 | char *cond_end = NULL; | |
cc59ec59 | 7519 | |
018d34a4 VP |
7520 | while (*tok == ' ' || *tok == '\t') |
7521 | tok++; | |
7522 | ||
7523 | end_tok = tok; | |
7524 | ||
7525 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7526 | end_tok++; | |
7527 | ||
7528 | toklen = end_tok - tok; | |
7529 | ||
7530 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7531 | { | |
f7545552 TT |
7532 | struct expression *expr; |
7533 | ||
018d34a4 | 7534 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7535 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7536 | xfree (expr); | |
018d34a4 VP |
7537 | cond_end = tok; |
7538 | *cond_string = savestring (cond_start, | |
7539 | cond_end - cond_start); | |
7540 | } | |
7541 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7542 | { | |
7543 | char *tmptok; | |
7544 | ||
7545 | tok = end_tok + 1; | |
7546 | tmptok = tok; | |
7547 | *thread = strtol (tok, &tok, 0); | |
7548 | if (tok == tmptok) | |
7549 | error (_("Junk after thread keyword.")); | |
7550 | if (!valid_thread_id (*thread)) | |
7551 | error (_("Unknown thread %d."), *thread); | |
7552 | } | |
4a306c9a JB |
7553 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7554 | { | |
7555 | char *tmptok; | |
7556 | ||
7557 | tok = end_tok + 1; | |
7558 | tmptok = tok; | |
7559 | *task = strtol (tok, &tok, 0); | |
7560 | if (tok == tmptok) | |
7561 | error (_("Junk after task keyword.")); | |
7562 | if (!valid_task_id (*task)) | |
b6199126 | 7563 | error (_("Unknown task %d."), *task); |
4a306c9a | 7564 | } |
018d34a4 VP |
7565 | else |
7566 | error (_("Junk at end of arguments.")); | |
7567 | } | |
7568 | } | |
7569 | ||
0fb4aa4b PA |
7570 | /* Decode a static tracepoint marker spec. */ |
7571 | ||
7572 | static struct symtabs_and_lines | |
7573 | decode_static_tracepoint_spec (char **arg_p) | |
7574 | { | |
7575 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7576 | struct symtabs_and_lines sals; | |
7577 | struct symtab_and_line sal; | |
7578 | struct symbol *sym; | |
7579 | struct cleanup *old_chain; | |
7580 | char *p = &(*arg_p)[3]; | |
7581 | char *endp; | |
7582 | char *marker_str; | |
7583 | int i; | |
7584 | ||
7585 | while (*p == ' ' || *p == '\t') | |
7586 | p++; | |
7587 | ||
7588 | endp = p; | |
7589 | while (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7590 | endp++; | |
7591 | ||
7592 | marker_str = savestring (p, endp - p); | |
7593 | old_chain = make_cleanup (xfree, marker_str); | |
7594 | ||
7595 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7596 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7597 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7598 | ||
7599 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7600 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7601 | ||
7602 | for (i = 0; i < sals.nelts; i++) | |
7603 | { | |
7604 | struct static_tracepoint_marker *marker; | |
7605 | ||
7606 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7607 | ||
7608 | init_sal (&sals.sals[i]); | |
7609 | ||
7610 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7611 | sals.sals[i].pc = marker->address; | |
7612 | ||
7613 | release_static_tracepoint_marker (marker); | |
7614 | } | |
7615 | ||
7616 | do_cleanups (old_chain); | |
7617 | ||
7618 | *arg_p = endp; | |
7619 | return sals; | |
7620 | } | |
7621 | ||
fd9b8c24 PA |
7622 | /* Set a breakpoint. This function is shared between CLI and MI |
7623 | functions for setting a breakpoint. This function has two major | |
7624 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7625 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7626 | breakpoint location, address and thread. Otherwise, ARG is just |
7627 | the location of breakpoint, with condition and thread specified by | |
7628 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7629 | the breakpoint number will be allocated from the internal | |
7630 | breakpoint count. Returns true if any breakpoint was created; | |
7631 | false otherwise. */ | |
0101ce28 | 7632 | |
8cdf0e15 VP |
7633 | int |
7634 | create_breakpoint (struct gdbarch *gdbarch, | |
7635 | char *arg, char *cond_string, int thread, | |
7636 | int parse_condition_and_thread, | |
0fb4aa4b | 7637 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7638 | int ignore_count, |
7639 | enum auto_boolean pending_break_support, | |
7640 | struct breakpoint_ops *ops, | |
84f4c1fe | 7641 | int from_tty, int enabled, int internal) |
c3f6f71d | 7642 | { |
71fff37b | 7643 | struct gdb_exception e; |
c3f6f71d | 7644 | struct symtabs_and_lines sals; |
0101ce28 | 7645 | struct symtab_and_line pending_sal; |
0101ce28 | 7646 | char *copy_arg; |
c3f6f71d JM |
7647 | char *addr_start = arg; |
7648 | char **addr_string; | |
7649 | struct cleanup *old_chain; | |
80c99de1 | 7650 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7651 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7652 | int i; |
0101ce28 | 7653 | int pending = 0; |
0101ce28 | 7654 | int not_found = 0; |
4a306c9a | 7655 | int task = 0; |
86b17b60 | 7656 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7657 | |
c3f6f71d JM |
7658 | sals.sals = NULL; |
7659 | sals.nelts = 0; | |
7660 | addr_string = NULL; | |
c3f6f71d | 7661 | |
0101ce28 JJ |
7662 | parse_args.arg_p = &arg; |
7663 | parse_args.sals_p = &sals; | |
7664 | parse_args.addr_string_p = &addr_string; | |
7665 | parse_args.not_found_ptr = ¬_found; | |
7666 | ||
0fb4aa4b PA |
7667 | if (type_wanted == bp_static_tracepoint && is_marker_spec (arg)) |
7668 | { | |
7669 | int i; | |
7670 | ||
7671 | sals = decode_static_tracepoint_spec (&arg); | |
7672 | ||
7673 | copy_arg = savestring (addr_start, arg - addr_start); | |
7674 | addr_string = xcalloc (sals.nelts, sizeof (char **)); | |
7675 | for (i = 0; i < sals.nelts; i++) | |
7676 | addr_string[i] = xstrdup (copy_arg); | |
7677 | goto done; | |
7678 | } | |
7679 | ||
05ff989b AC |
7680 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7681 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7682 | |
7683 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7684 | switch (e.reason) |
0101ce28 | 7685 | { |
05ff989b | 7686 | case RETURN_QUIT: |
98deb0da | 7687 | throw_exception (e); |
05ff989b AC |
7688 | case RETURN_ERROR: |
7689 | switch (e.error) | |
0101ce28 | 7690 | { |
05ff989b | 7691 | case NOT_FOUND_ERROR: |
0101ce28 | 7692 | |
05ff989b AC |
7693 | /* If pending breakpoint support is turned off, throw |
7694 | error. */ | |
fa8d40ab JJ |
7695 | |
7696 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7697 | throw_exception (e); |
7698 | ||
7699 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7700 | |
05ff989b AC |
7701 | /* If pending breakpoint support is auto query and the user |
7702 | selects no, then simply return the error code. */ | |
059fb39f | 7703 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
9bd89d67 | 7704 | && !nquery (_("Make breakpoint pending on future shared library load? "))) |
fd9b8c24 | 7705 | return 0; |
fa8d40ab | 7706 | |
05ff989b AC |
7707 | /* At this point, either the user was queried about setting |
7708 | a pending breakpoint and selected yes, or pending | |
7709 | breakpoint behavior is on and thus a pending breakpoint | |
7710 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7711 | copy_arg = xstrdup (addr_start); |
7712 | addr_string = ©_arg; | |
7713 | sals.nelts = 1; | |
7714 | sals.sals = &pending_sal; | |
7715 | pending_sal.pc = 0; | |
7716 | pending = 1; | |
05ff989b AC |
7717 | break; |
7718 | default: | |
98deb0da | 7719 | throw_exception (e); |
0101ce28 | 7720 | } |
05ff989b AC |
7721 | default: |
7722 | if (!sals.nelts) | |
fd9b8c24 | 7723 | return 0; |
0101ce28 | 7724 | } |
c3f6f71d | 7725 | |
0fb4aa4b PA |
7726 | done: |
7727 | ||
4a64f543 | 7728 | /* Create a chain of things that always need to be cleaned up. */ |
c3f6f71d JM |
7729 | old_chain = make_cleanup (null_cleanup, 0); |
7730 | ||
0101ce28 JJ |
7731 | if (!pending) |
7732 | { | |
7733 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7734 | make_cleanup (xfree, sals.sals); | |
7735 | ||
4a64f543 | 7736 | /* Cleanup the addr_string array but not its contents. */ |
0101ce28 JJ |
7737 | make_cleanup (xfree, addr_string); |
7738 | } | |
c3f6f71d | 7739 | |
c3f6f71d JM |
7740 | /* ----------------------------- SNIP ----------------------------- |
7741 | Anything added to the cleanup chain beyond this point is assumed | |
7742 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7743 | then the memory is not reclaimed. */ |
7744 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7745 | |
7746 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7747 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7748 | for (i = 0; i < sals.nelts; i++) |
7749 | { | |
7750 | if (addr_string[i] != NULL) | |
b8c9b27d | 7751 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7752 | } |
7753 | ||
7754 | /* Resolve all line numbers to PC's and verify that the addresses | |
7755 | are ok for the target. */ | |
0101ce28 | 7756 | if (!pending) |
23e7acfb | 7757 | breakpoint_sals_to_pc (&sals); |
c3f6f71d | 7758 | |
7a697b8d SS |
7759 | /* Fast tracepoints may have additional restrictions on location. */ |
7760 | if (type_wanted == bp_fast_tracepoint) | |
7761 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7762 | ||
c3f6f71d JM |
7763 | /* Verify that condition can be parsed, before setting any |
7764 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7765 | breakpoint. */ |
0101ce28 | 7766 | if (!pending) |
c3f6f71d | 7767 | { |
2f069f6f | 7768 | if (parse_condition_and_thread) |
72b2ff0e VP |
7769 | { |
7770 | /* Here we only parse 'arg' to separate condition | |
7771 | from thread number, so parsing in context of first | |
7772 | sal is OK. When setting the breakpoint we'll | |
7773 | re-parse it in context of each sal. */ | |
7774 | cond_string = NULL; | |
7775 | thread = -1; | |
4a306c9a JB |
7776 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7777 | &thread, &task); | |
72b2ff0e VP |
7778 | if (cond_string) |
7779 | make_cleanup (xfree, cond_string); | |
7780 | } | |
2f069f6f | 7781 | else |
72b2ff0e VP |
7782 | { |
7783 | /* Create a private copy of condition string. */ | |
7784 | if (cond_string) | |
7785 | { | |
7786 | cond_string = xstrdup (cond_string); | |
7787 | make_cleanup (xfree, cond_string); | |
7788 | } | |
7789 | } | |
0fb4aa4b PA |
7790 | |
7791 | /* If the user is creating a static tracepoint by marker id | |
7792 | (strace -m MARKER_ID), then store the sals index, so that | |
7793 | breakpoint_re_set can try to match up which of the newly | |
7794 | found markers corresponds to this one, and, don't try to | |
7795 | expand multiple locations for each sal, given than SALS | |
7796 | already should contain all sals for MARKER_ID. */ | |
7797 | if (type_wanted == bp_static_tracepoint | |
7798 | && is_marker_spec (addr_string[0])) | |
7799 | { | |
7800 | int i; | |
7801 | ||
7802 | for (i = 0; i < sals.nelts; ++i) | |
7803 | { | |
7804 | struct symtabs_and_lines expanded; | |
7805 | struct breakpoint *tp; | |
7806 | struct cleanup *old_chain; | |
7807 | ||
7808 | expanded.nelts = 1; | |
7809 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
7810 | expanded.sals[0] = sals.sals[i]; | |
7811 | old_chain = make_cleanup (xfree, expanded.sals); | |
7812 | ||
7813 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], | |
7814 | cond_string, type_wanted, | |
7815 | tempflag ? disp_del : disp_donttouch, | |
7816 | thread, task, ignore_count, ops, | |
84f4c1fe | 7817 | from_tty, enabled, internal); |
0fb4aa4b PA |
7818 | |
7819 | do_cleanups (old_chain); | |
7820 | ||
7821 | /* Get the tracepoint we just created. */ | |
84f4c1fe PM |
7822 | if (internal) |
7823 | tp = get_breakpoint (internal_breakpoint_number); | |
7824 | else | |
7825 | tp = get_breakpoint (breakpoint_count); | |
0fb4aa4b PA |
7826 | gdb_assert (tp != NULL); |
7827 | ||
7828 | /* Given that its possible to have multiple markers with | |
7829 | the same string id, if the user is creating a static | |
7830 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
7831 | store the sals index, so that breakpoint_re_set can | |
7832 | try to match up which of the newly found markers | |
7833 | corresponds to this one */ | |
7834 | tp->static_trace_marker_id_idx = i; | |
7835 | } | |
7836 | } | |
7837 | else | |
7838 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, | |
7839 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7840 | thread, task, ignore_count, ops, from_tty, | |
84f4c1fe | 7841 | enabled, internal); |
c906108c | 7842 | } |
0101ce28 JJ |
7843 | else |
7844 | { | |
0101ce28 JJ |
7845 | struct breakpoint *b; |
7846 | ||
0101ce28 JJ |
7847 | make_cleanup (xfree, copy_arg); |
7848 | ||
a6d9a66e | 7849 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
84f4c1fe | 7850 | set_breakpoint_number (internal, b); |
72b2ff0e | 7851 | b->thread = -1; |
018d34a4 | 7852 | b->addr_string = addr_string[0]; |
72b2ff0e | 7853 | b->cond_string = NULL; |
0101ce28 | 7854 | b->ignore_count = ignore_count; |
0101ce28 | 7855 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7856 | b->condition_not_parsed = 1; |
604133b5 | 7857 | b->ops = ops; |
41447f92 | 7858 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7859 | b->pspace = current_program_space; |
84f4c1fe | 7860 | b->py_bp_object = NULL; |
74960c60 | 7861 | |
6c95b8df | 7862 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7863 | && (b->type == bp_breakpoint |
7864 | || b->type == bp_hardware_breakpoint)) | |
7865 | b->enable_state = bp_startup_disabled; | |
7866 | ||
84f4c1fe PM |
7867 | if (internal) |
7868 | /* Do not mention breakpoints with a negative number, | |
7869 | but do notify observers. */ | |
7870 | observer_notify_breakpoint_created (b->number); | |
7871 | else | |
7872 | mention (b); | |
0101ce28 JJ |
7873 | } |
7874 | ||
c3f6f71d | 7875 | if (sals.nelts > 1) |
95a42b64 TT |
7876 | { |
7877 | warning (_("Multiple breakpoints were set.\n" | |
7878 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7879 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7880 | } |
7881 | ||
80c99de1 PA |
7882 | /* That's it. Discard the cleanups for data inserted into the |
7883 | breakpoint. */ | |
7884 | discard_cleanups (bkpt_chain); | |
7885 | /* But cleanup everything else. */ | |
c3f6f71d | 7886 | do_cleanups (old_chain); |
217dc9e2 | 7887 | |
80c99de1 | 7888 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7889 | update_global_location_list (1); |
fd9b8c24 PA |
7890 | |
7891 | return 1; | |
c3f6f71d | 7892 | } |
c906108c | 7893 | |
72b2ff0e VP |
7894 | /* Set a breakpoint. |
7895 | ARG is a string describing breakpoint address, | |
7896 | condition, and thread. | |
7897 | FLAG specifies if a breakpoint is hardware on, | |
7898 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7899 | and BP_TEMPFLAG. */ | |
7900 | ||
98deb0da | 7901 | static void |
72b2ff0e | 7902 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7903 | { |
72b2ff0e | 7904 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7905 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7906 | ? bp_hardware_breakpoint | |
7907 | : bp_breakpoint); | |
c3f6f71d | 7908 | |
8cdf0e15 VP |
7909 | create_breakpoint (get_current_arch (), |
7910 | arg, | |
7911 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7912 | tempflag, type_wanted, |
8cdf0e15 VP |
7913 | 0 /* Ignore count */, |
7914 | pending_break_support, | |
7915 | NULL /* breakpoint_ops */, | |
7916 | from_tty, | |
84f4c1fe PM |
7917 | 1 /* enabled */, |
7918 | 0 /* internal */); | |
c906108c SS |
7919 | } |
7920 | ||
72b2ff0e | 7921 | |
c906108c SS |
7922 | /* Helper function for break_command_1 and disassemble_command. */ |
7923 | ||
7924 | void | |
fba45db2 | 7925 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7926 | { |
7927 | CORE_ADDR pc; | |
7928 | ||
7929 | if (sal->pc == 0 && sal->symtab != NULL) | |
7930 | { | |
7931 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7932 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7933 | sal->line, sal->symtab->filename); |
7934 | sal->pc = pc; | |
6a048695 | 7935 | |
4a64f543 MS |
7936 | /* If this SAL corresponds to a breakpoint inserted using a line |
7937 | number, then skip the function prologue if necessary. */ | |
6a048695 | 7938 | if (sal->explicit_line) |
059acae7 | 7939 | skip_prologue_sal (sal); |
c906108c SS |
7940 | } |
7941 | ||
7942 | if (sal->section == 0 && sal->symtab != NULL) | |
7943 | { | |
7944 | struct blockvector *bv; | |
c5aa993b JM |
7945 | struct block *b; |
7946 | struct symbol *sym; | |
c906108c | 7947 | |
801e3a5b | 7948 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7949 | if (bv != NULL) |
7950 | { | |
7f0df278 | 7951 | sym = block_linkage_function (b); |
c906108c SS |
7952 | if (sym != NULL) |
7953 | { | |
7954 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7955 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7956 | } |
7957 | else | |
7958 | { | |
4a64f543 MS |
7959 | /* It really is worthwhile to have the section, so we'll |
7960 | just have to look harder. This case can be executed | |
7961 | if we have line numbers but no functions (as can | |
7962 | happen in assembly source). */ | |
c906108c | 7963 | |
c5aa993b | 7964 | struct minimal_symbol *msym; |
6c95b8df PA |
7965 | struct cleanup *old_chain = save_current_space_and_thread (); |
7966 | ||
7967 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7968 | |
7969 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7970 | if (msym) | |
714835d5 | 7971 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7972 | |
7973 | do_cleanups (old_chain); | |
c906108c SS |
7974 | } |
7975 | } | |
7976 | } | |
7977 | } | |
7978 | ||
7979 | void | |
fba45db2 | 7980 | break_command (char *arg, int from_tty) |
c906108c | 7981 | { |
db107f19 | 7982 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7983 | } |
7984 | ||
c906108c | 7985 | void |
fba45db2 | 7986 | tbreak_command (char *arg, int from_tty) |
c906108c | 7987 | { |
db107f19 | 7988 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7989 | } |
7990 | ||
c906108c | 7991 | static void |
fba45db2 | 7992 | hbreak_command (char *arg, int from_tty) |
c906108c | 7993 | { |
db107f19 | 7994 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7995 | } |
7996 | ||
7997 | static void | |
fba45db2 | 7998 | thbreak_command (char *arg, int from_tty) |
c906108c | 7999 | { |
db107f19 | 8000 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8001 | } |
8002 | ||
8003 | static void | |
fba45db2 | 8004 | stop_command (char *arg, int from_tty) |
c906108c | 8005 | { |
a3f17187 | 8006 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8007 | Usage: stop in <function | address>\n\ |
a3f17187 | 8008 | stop at <line>\n")); |
c906108c SS |
8009 | } |
8010 | ||
8011 | static void | |
fba45db2 | 8012 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8013 | { |
8014 | int badInput = 0; | |
8015 | ||
c5aa993b | 8016 | if (arg == (char *) NULL) |
c906108c SS |
8017 | badInput = 1; |
8018 | else if (*arg != '*') | |
8019 | { | |
8020 | char *argptr = arg; | |
8021 | int hasColon = 0; | |
8022 | ||
4a64f543 | 8023 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8024 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8025 | function/method name. */ |
c906108c | 8026 | while (*argptr && !hasColon) |
c5aa993b JM |
8027 | { |
8028 | hasColon = (*argptr == ':'); | |
8029 | argptr++; | |
8030 | } | |
c906108c SS |
8031 | |
8032 | if (hasColon) | |
c5aa993b | 8033 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8034 | else |
c5aa993b | 8035 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8036 | } |
8037 | ||
8038 | if (badInput) | |
a3f17187 | 8039 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8040 | else |
db107f19 | 8041 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8042 | } |
8043 | ||
8044 | static void | |
fba45db2 | 8045 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8046 | { |
8047 | int badInput = 0; | |
8048 | ||
c5aa993b | 8049 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8050 | badInput = 1; |
8051 | else | |
8052 | { | |
8053 | char *argptr = arg; | |
8054 | int hasColon = 0; | |
8055 | ||
4a64f543 MS |
8056 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8057 | it is probably a line number. */ | |
c906108c | 8058 | while (*argptr && !hasColon) |
c5aa993b JM |
8059 | { |
8060 | hasColon = (*argptr == ':'); | |
8061 | argptr++; | |
8062 | } | |
c906108c SS |
8063 | |
8064 | if (hasColon) | |
c5aa993b | 8065 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8066 | else |
c5aa993b | 8067 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8068 | } |
8069 | ||
8070 | if (badInput) | |
a3f17187 | 8071 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8072 | else |
db107f19 | 8073 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8074 | } |
8075 | ||
4a64f543 MS |
8076 | /* Return non-zero if EXP is verified as constant. Returned zero |
8077 | means EXP is variable. Also the constant detection may fail for | |
8078 | some constant expressions and in such case still falsely return | |
8079 | zero. */ | |
65d79d4b SDJ |
8080 | static int |
8081 | watchpoint_exp_is_const (const struct expression *exp) | |
8082 | { | |
8083 | int i = exp->nelts; | |
8084 | ||
8085 | while (i > 0) | |
8086 | { | |
8087 | int oplenp, argsp; | |
8088 | ||
8089 | /* We are only interested in the descriptor of each element. */ | |
8090 | operator_length (exp, i, &oplenp, &argsp); | |
8091 | i -= oplenp; | |
8092 | ||
8093 | switch (exp->elts[i].opcode) | |
8094 | { | |
8095 | case BINOP_ADD: | |
8096 | case BINOP_SUB: | |
8097 | case BINOP_MUL: | |
8098 | case BINOP_DIV: | |
8099 | case BINOP_REM: | |
8100 | case BINOP_MOD: | |
8101 | case BINOP_LSH: | |
8102 | case BINOP_RSH: | |
8103 | case BINOP_LOGICAL_AND: | |
8104 | case BINOP_LOGICAL_OR: | |
8105 | case BINOP_BITWISE_AND: | |
8106 | case BINOP_BITWISE_IOR: | |
8107 | case BINOP_BITWISE_XOR: | |
8108 | case BINOP_EQUAL: | |
8109 | case BINOP_NOTEQUAL: | |
8110 | case BINOP_LESS: | |
8111 | case BINOP_GTR: | |
8112 | case BINOP_LEQ: | |
8113 | case BINOP_GEQ: | |
8114 | case BINOP_REPEAT: | |
8115 | case BINOP_COMMA: | |
8116 | case BINOP_EXP: | |
8117 | case BINOP_MIN: | |
8118 | case BINOP_MAX: | |
8119 | case BINOP_INTDIV: | |
8120 | case BINOP_CONCAT: | |
8121 | case BINOP_IN: | |
8122 | case BINOP_RANGE: | |
8123 | case TERNOP_COND: | |
8124 | case TERNOP_SLICE: | |
8125 | case TERNOP_SLICE_COUNT: | |
8126 | ||
8127 | case OP_LONG: | |
8128 | case OP_DOUBLE: | |
8129 | case OP_DECFLOAT: | |
8130 | case OP_LAST: | |
8131 | case OP_COMPLEX: | |
8132 | case OP_STRING: | |
8133 | case OP_BITSTRING: | |
8134 | case OP_ARRAY: | |
8135 | case OP_TYPE: | |
8136 | case OP_NAME: | |
8137 | case OP_OBJC_NSSTRING: | |
8138 | ||
8139 | case UNOP_NEG: | |
8140 | case UNOP_LOGICAL_NOT: | |
8141 | case UNOP_COMPLEMENT: | |
8142 | case UNOP_ADDR: | |
8143 | case UNOP_HIGH: | |
4a64f543 MS |
8144 | /* Unary, binary and ternary operators: We have to check |
8145 | their operands. If they are constant, then so is the | |
8146 | result of that operation. For instance, if A and B are | |
8147 | determined to be constants, then so is "A + B". | |
8148 | ||
8149 | UNOP_IND is one exception to the rule above, because the | |
8150 | value of *ADDR is not necessarily a constant, even when | |
8151 | ADDR is. */ | |
65d79d4b SDJ |
8152 | break; |
8153 | ||
8154 | case OP_VAR_VALUE: | |
8155 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8156 | |
65d79d4b | 8157 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8158 | possible that a buggy compiler could mark a variable as |
8159 | constant even when it is not, and TYPE_CONST would return | |
8160 | true in this case, while SYMBOL_CLASS wouldn't. | |
8161 | ||
8162 | We also have to check for function symbols because they | |
8163 | are always constant. */ | |
65d79d4b SDJ |
8164 | { |
8165 | struct symbol *s = exp->elts[i + 2].symbol; | |
8166 | ||
8167 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8168 | && SYMBOL_CLASS (s) != LOC_CONST | |
8169 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8170 | return 0; | |
8171 | break; | |
8172 | } | |
8173 | ||
8174 | /* The default action is to return 0 because we are using | |
8175 | the optimistic approach here: If we don't know something, | |
8176 | then it is not a constant. */ | |
8177 | default: | |
8178 | return 0; | |
8179 | } | |
8180 | } | |
8181 | ||
8182 | return 1; | |
8183 | } | |
8184 | ||
53a5351d JM |
8185 | /* accessflag: hw_write: watch write, |
8186 | hw_read: watch read, | |
8187 | hw_access: watch access (read or write) */ | |
c906108c | 8188 | static void |
84f4c1fe PM |
8189 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8190 | int just_location, int internal) | |
c906108c | 8191 | { |
d983da9c | 8192 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8193 | struct expression *exp; |
60e1c644 | 8194 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8195 | struct value *val, *mark, *result; |
c906108c | 8196 | struct frame_info *frame; |
c906108c SS |
8197 | char *exp_start = NULL; |
8198 | char *exp_end = NULL; | |
37e4754d | 8199 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
8200 | int toklen; |
8201 | char *cond_start = NULL; | |
8202 | char *cond_end = NULL; | |
c906108c SS |
8203 | int i, other_type_used, target_resources_ok = 0; |
8204 | enum bptype bp_type; | |
8205 | int mem_cnt = 0; | |
37e4754d | 8206 | int thread = -1; |
0cf6dd15 | 8207 | int pc = 0; |
c906108c | 8208 | |
37e4754d LM |
8209 | /* Make sure that we actually have parameters to parse. */ |
8210 | if (arg != NULL && arg[0] != '\0') | |
8211 | { | |
8212 | toklen = strlen (arg); /* Size of argument list. */ | |
8213 | ||
8214 | /* Points tok to the end of the argument list. */ | |
8215 | tok = arg + toklen - 1; | |
8216 | ||
4a64f543 MS |
8217 | /* Go backwards in the parameters list. Skip the last |
8218 | parameter. If we're expecting a 'thread <thread_num>' | |
8219 | parameter, this should be the thread identifier. */ | |
37e4754d LM |
8220 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8221 | tok--; | |
8222 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8223 | tok--; | |
8224 | ||
8225 | /* Points end_tok to the beginning of the last token. */ | |
8226 | id_tok_start = tok + 1; | |
8227 | ||
4a64f543 MS |
8228 | /* Go backwards in the parameters list. Skip one more |
8229 | parameter. If we're expecting a 'thread <thread_num>' | |
8230 | parameter, we should reach a "thread" token. */ | |
37e4754d LM |
8231 | while (tok > arg && (*tok == ' ' || *tok == '\t')) |
8232 | tok--; | |
8233 | ||
8234 | end_tok = tok; | |
8235 | ||
8236 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
8237 | tok--; | |
8238 | ||
8239 | /* Move the pointer forward to skip the whitespace and | |
8240 | calculate the length of the token. */ | |
8241 | tok++; | |
8242 | toklen = end_tok - tok; | |
8243 | ||
8244 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8245 | { | |
8246 | /* At this point we've found a "thread" token, which means | |
8247 | the user is trying to set a watchpoint that triggers | |
8248 | only in a specific thread. */ | |
8249 | char *endp; | |
8250 | ||
8251 | /* Extract the thread ID from the next token. */ | |
8252 | thread = strtol (id_tok_start, &endp, 0); | |
8253 | ||
8254 | /* Check if the user provided a valid numeric value for the | |
8255 | thread ID. */ | |
8256 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
8257 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
8258 | ||
8259 | /* Check if the thread actually exists. */ | |
8260 | if (!valid_thread_id (thread)) | |
8261 | error (_("Unknown thread %d."), thread); | |
8262 | ||
8263 | /* Truncate the string and get rid of the thread <thread_num> | |
8264 | parameter before the parameter list is parsed by the | |
8265 | evaluate_expression() function. */ | |
8266 | *tok = '\0'; | |
8267 | } | |
8268 | } | |
8269 | ||
8270 | /* Parse the rest of the arguments. */ | |
c906108c SS |
8271 | innermost_block = NULL; |
8272 | exp_start = arg; | |
8273 | exp = parse_exp_1 (&arg, 0, 0); | |
8274 | exp_end = arg; | |
fa8a61dc TT |
8275 | /* Remove trailing whitespace from the expression before saving it. |
8276 | This makes the eventual display of the expression string a bit | |
8277 | prettier. */ | |
8278 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
8279 | --exp_end; | |
8280 | ||
65d79d4b SDJ |
8281 | /* Checking if the expression is not constant. */ |
8282 | if (watchpoint_exp_is_const (exp)) | |
8283 | { | |
8284 | int len; | |
8285 | ||
8286 | len = exp_end - exp_start; | |
8287 | while (len > 0 && isspace (exp_start[len - 1])) | |
8288 | len--; | |
8289 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
8290 | } | |
8291 | ||
c906108c SS |
8292 | exp_valid_block = innermost_block; |
8293 | mark = value_mark (); | |
a1442452 | 8294 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
8295 | |
8296 | if (just_location) | |
8297 | { | |
8298 | exp_valid_block = NULL; | |
a1442452 | 8299 | val = value_addr (result); |
06a64a0b TT |
8300 | release_value (val); |
8301 | value_free_to_mark (mark); | |
8302 | } | |
8303 | else if (val != NULL) | |
fa4727a6 | 8304 | release_value (val); |
c906108c SS |
8305 | |
8306 | tok = arg; | |
8307 | while (*tok == ' ' || *tok == '\t') | |
8308 | tok++; | |
8309 | end_tok = tok; | |
8310 | ||
8311 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
8312 | end_tok++; | |
8313 | ||
8314 | toklen = end_tok - tok; | |
8315 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
8316 | { | |
2d134ed3 PA |
8317 | struct expression *cond; |
8318 | ||
60e1c644 | 8319 | innermost_block = NULL; |
c906108c SS |
8320 | tok = cond_start = end_tok + 1; |
8321 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
8322 | |
8323 | /* The watchpoint expression may not be local, but the condition | |
8324 | may still be. E.g.: `watch global if local > 0'. */ | |
8325 | cond_exp_valid_block = innermost_block; | |
8326 | ||
2d134ed3 | 8327 | xfree (cond); |
c906108c SS |
8328 | cond_end = tok; |
8329 | } | |
8330 | if (*tok) | |
8a3fe4f8 | 8331 | error (_("Junk at end of command.")); |
c906108c | 8332 | |
53a5351d | 8333 | if (accessflag == hw_read) |
c5aa993b | 8334 | bp_type = bp_read_watchpoint; |
53a5351d | 8335 | else if (accessflag == hw_access) |
c5aa993b JM |
8336 | bp_type = bp_access_watchpoint; |
8337 | else | |
8338 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
8339 | |
8340 | mem_cnt = can_use_hardware_watchpoint (val); | |
8341 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 8342 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
8343 | if (mem_cnt != 0) |
8344 | { | |
8345 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 8346 | target_resources_ok = |
d92524f1 | 8347 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 8348 | other_type_used); |
c5aa993b | 8349 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8350 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 8351 | |
c5aa993b | 8352 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 8353 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 8354 | } |
c906108c | 8355 | |
4a64f543 MS |
8356 | /* Change the type of breakpoint to an ordinary watchpoint if a |
8357 | hardware watchpoint could not be set. */ | |
4d28f7a8 KB |
8358 | if (!mem_cnt || target_resources_ok <= 0) |
8359 | bp_type = bp_watchpoint; | |
8360 | ||
d983da9c | 8361 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
8362 | |
8363 | /* If the expression is "local", then set up a "watchpoint scope" | |
8364 | breakpoint at the point where we've left the scope of the watchpoint | |
8365 | expression. Create the scope breakpoint before the watchpoint, so | |
8366 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 8367 | if (exp_valid_block && frame) |
d983da9c | 8368 | { |
edb3359d DJ |
8369 | if (frame_id_p (frame_unwind_caller_id (frame))) |
8370 | { | |
8371 | scope_breakpoint | |
a6d9a66e UW |
8372 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
8373 | frame_unwind_caller_pc (frame), | |
edb3359d | 8374 | bp_watchpoint_scope); |
d983da9c | 8375 | |
edb3359d | 8376 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 8377 | |
edb3359d DJ |
8378 | /* Automatically delete the breakpoint when it hits. */ |
8379 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 8380 | |
edb3359d DJ |
8381 | /* Only break in the proper frame (help with recursion). */ |
8382 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 8383 | |
edb3359d | 8384 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
8385 | scope_breakpoint->loc->gdbarch |
8386 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
8387 | scope_breakpoint->loc->requested_address |
8388 | = frame_unwind_caller_pc (frame); | |
8389 | scope_breakpoint->loc->address | |
a6d9a66e UW |
8390 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
8391 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
8392 | scope_breakpoint->type); |
8393 | } | |
d983da9c DJ |
8394 | } |
8395 | ||
c906108c | 8396 | /* Now set up the breakpoint. */ |
2d134ed3 | 8397 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
84f4c1fe | 8398 | set_breakpoint_number (internal, b); |
37e4754d | 8399 | b->thread = thread; |
b5de0fa7 | 8400 | b->disposition = disp_donttouch; |
c906108c SS |
8401 | b->exp = exp; |
8402 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 8403 | b->cond_exp_valid_block = cond_exp_valid_block; |
06a64a0b TT |
8404 | if (just_location) |
8405 | { | |
8406 | struct type *t = value_type (val); | |
8407 | CORE_ADDR addr = value_as_address (val); | |
8408 | char *name; | |
8409 | ||
8410 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
8411 | name = type_to_string (t); | |
8412 | ||
d63d0675 JK |
8413 | b->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
8414 | core_addr_to_string (addr)); | |
06a64a0b TT |
8415 | xfree (name); |
8416 | ||
d63d0675 JK |
8417 | b->exp_string = xstrprintf ("-location: %.*s", |
8418 | (int) (exp_end - exp_start), exp_start); | |
8419 | ||
06a64a0b TT |
8420 | /* The above expression is in C. */ |
8421 | b->language = language_c; | |
8422 | } | |
8423 | else | |
8424 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
c906108c | 8425 | b->val = val; |
fa4727a6 | 8426 | b->val_valid = 1; |
c906108c SS |
8427 | if (cond_start) |
8428 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
8429 | else | |
8430 | b->cond_string = 0; | |
c5aa993b | 8431 | |
c906108c | 8432 | if (frame) |
f6bc2008 PA |
8433 | { |
8434 | b->watchpoint_frame = get_frame_id (frame); | |
8435 | b->watchpoint_thread = inferior_ptid; | |
8436 | } | |
c906108c | 8437 | else |
f6bc2008 PA |
8438 | { |
8439 | b->watchpoint_frame = null_frame_id; | |
8440 | b->watchpoint_thread = null_ptid; | |
8441 | } | |
c906108c | 8442 | |
d983da9c | 8443 | if (scope_breakpoint != NULL) |
c906108c | 8444 | { |
d983da9c DJ |
8445 | /* The scope breakpoint is related to the watchpoint. We will |
8446 | need to act on them together. */ | |
8447 | b->related_breakpoint = scope_breakpoint; | |
8448 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 8449 | } |
d983da9c | 8450 | |
06a64a0b TT |
8451 | if (!just_location) |
8452 | value_free_to_mark (mark); | |
2d134ed3 PA |
8453 | |
8454 | /* Finally update the new watchpoint. This creates the locations | |
8455 | that should be inserted. */ | |
8456 | update_watchpoint (b, 1); | |
84f4c1fe PM |
8457 | if (internal) |
8458 | /* Do not mention breakpoints with a negative number, but do | |
8459 | notify observers. */ | |
8460 | observer_notify_breakpoint_created (b->number); | |
8461 | else | |
8462 | mention (b); | |
b60e7edf | 8463 | update_global_location_list (1); |
c906108c SS |
8464 | } |
8465 | ||
4a64f543 MS |
8466 | /* Return count of locations need to be watched and can be handled in |
8467 | hardware. If the watchpoint can not be handled in hardware return | |
8468 | zero. */ | |
c906108c | 8469 | |
c906108c | 8470 | static int |
fba45db2 | 8471 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
8472 | { |
8473 | int found_memory_cnt = 0; | |
2e70b7b9 | 8474 | struct value *head = v; |
c906108c SS |
8475 | |
8476 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 8477 | if (!can_use_hw_watchpoints) |
c906108c | 8478 | return 0; |
c5aa993b | 8479 | |
5c44784c JM |
8480 | /* Make sure that the value of the expression depends only upon |
8481 | memory contents, and values computed from them within GDB. If we | |
8482 | find any register references or function calls, we can't use a | |
8483 | hardware watchpoint. | |
8484 | ||
8485 | The idea here is that evaluating an expression generates a series | |
8486 | of values, one holding the value of every subexpression. (The | |
8487 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
8488 | a*b+c.) GDB's values hold almost enough information to establish | |
8489 | the criteria given above --- they identify memory lvalues, | |
8490 | register lvalues, computed values, etcetera. So we can evaluate | |
8491 | the expression, and then scan the chain of values that leaves | |
8492 | behind to decide whether we can detect any possible change to the | |
8493 | expression's final value using only hardware watchpoints. | |
8494 | ||
8495 | However, I don't think that the values returned by inferior | |
8496 | function calls are special in any way. So this function may not | |
8497 | notice that an expression involving an inferior function call | |
8498 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 8499 | for (; v; v = value_next (v)) |
c906108c | 8500 | { |
5c44784c | 8501 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 8502 | { |
8464be76 DJ |
8503 | if (v != head && value_lazy (v)) |
8504 | /* A lazy memory lvalue in the chain is one that GDB never | |
8505 | needed to fetch; we either just used its address (e.g., | |
8506 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
8507 | in `a,b'). This doesn't apply to HEAD; if that is | |
8508 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 8509 | ; |
53a5351d | 8510 | else |
5c44784c JM |
8511 | { |
8512 | /* Ahh, memory we actually used! Check if we can cover | |
8513 | it with hardware watchpoints. */ | |
df407dfe | 8514 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
8515 | |
8516 | /* We only watch structs and arrays if user asked for it | |
8517 | explicitly, never if they just happen to appear in a | |
8518 | middle of some value chain. */ | |
8519 | if (v == head | |
8520 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
8521 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
8522 | { | |
42ae5230 | 8523 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 8524 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 8525 | |
d92524f1 | 8526 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
8527 | return 0; |
8528 | else | |
8529 | found_memory_cnt++; | |
8530 | } | |
5c44784c | 8531 | } |
c5aa993b | 8532 | } |
5086187c AC |
8533 | else if (VALUE_LVAL (v) != not_lval |
8534 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 8535 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 8536 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 8537 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
8538 | } |
8539 | ||
8540 | /* The expression itself looks suitable for using a hardware | |
8541 | watchpoint, but give the target machine a chance to reject it. */ | |
8542 | return found_memory_cnt; | |
8543 | } | |
8544 | ||
8b93c638 | 8545 | void |
84f4c1fe | 8546 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8547 | { |
84f4c1fe | 8548 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
8549 | } |
8550 | ||
8551 | /* A helper function that looks for an argument at the start of a | |
8552 | string. The argument must also either be at the end of the string, | |
8553 | or be followed by whitespace. Returns 1 if it finds the argument, | |
8554 | 0 otherwise. If the argument is found, it updates *STR. */ | |
8555 | ||
8556 | static int | |
8557 | check_for_argument (char **str, char *arg, int arg_len) | |
8558 | { | |
8559 | if (strncmp (*str, arg, arg_len) == 0 | |
8560 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
8561 | { | |
8562 | *str += arg_len; | |
8563 | return 1; | |
8564 | } | |
8565 | return 0; | |
8566 | } | |
8567 | ||
8568 | /* A helper function that looks for the "-location" argument and then | |
8569 | calls watch_command_1. */ | |
8570 | ||
8571 | static void | |
8572 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
8573 | { | |
8574 | int just_location = 0; | |
8575 | ||
8576 | if (arg | |
8577 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
8578 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
8579 | { | |
8580 | ep_skip_leading_whitespace (&arg); | |
8581 | just_location = 1; | |
8582 | } | |
8583 | ||
84f4c1fe | 8584 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 8585 | } |
8926118c | 8586 | |
c5aa993b | 8587 | static void |
fba45db2 | 8588 | watch_command (char *arg, int from_tty) |
c906108c | 8589 | { |
06a64a0b | 8590 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
8591 | } |
8592 | ||
8b93c638 | 8593 | void |
84f4c1fe | 8594 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8595 | { |
84f4c1fe | 8596 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 8597 | } |
8926118c | 8598 | |
c5aa993b | 8599 | static void |
fba45db2 | 8600 | rwatch_command (char *arg, int from_tty) |
c906108c | 8601 | { |
06a64a0b | 8602 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
8603 | } |
8604 | ||
8b93c638 | 8605 | void |
84f4c1fe | 8606 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 8607 | { |
84f4c1fe | 8608 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 8609 | } |
8926118c | 8610 | |
c5aa993b | 8611 | static void |
fba45db2 | 8612 | awatch_command (char *arg, int from_tty) |
c906108c | 8613 | { |
06a64a0b | 8614 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 8615 | } |
c906108c | 8616 | \f |
c5aa993b | 8617 | |
43ff13b4 | 8618 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
8619 | because it uses the mechanisms of breakpoints. */ |
8620 | ||
bfec99b2 PA |
8621 | struct until_break_command_continuation_args |
8622 | { | |
8623 | struct breakpoint *breakpoint; | |
8624 | struct breakpoint *breakpoint2; | |
186c406b | 8625 | int thread_num; |
bfec99b2 PA |
8626 | }; |
8627 | ||
43ff13b4 | 8628 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 8629 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 8630 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 8631 | command. */ |
c2c6d25f | 8632 | static void |
604ead4a | 8633 | until_break_command_continuation (void *arg) |
43ff13b4 | 8634 | { |
bfec99b2 PA |
8635 | struct until_break_command_continuation_args *a = arg; |
8636 | ||
8637 | delete_breakpoint (a->breakpoint); | |
8638 | if (a->breakpoint2) | |
8639 | delete_breakpoint (a->breakpoint2); | |
186c406b | 8640 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
8641 | } |
8642 | ||
c906108c | 8643 | void |
ae66c1fc | 8644 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8645 | { |
8646 | struct symtabs_and_lines sals; | |
8647 | struct symtab_and_line sal; | |
206415a3 | 8648 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8649 | struct breakpoint *breakpoint; |
f107f563 | 8650 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 8651 | struct cleanup *old_chain; |
186c406b TT |
8652 | int thread; |
8653 | struct thread_info *tp; | |
c906108c SS |
8654 | |
8655 | clear_proceed_status (); | |
8656 | ||
8657 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 8658 | this function. */ |
c5aa993b | 8659 | |
c906108c SS |
8660 | if (default_breakpoint_valid) |
8661 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8662 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8663 | else |
53a5351d | 8664 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8665 | 0, (char ***) NULL, NULL); |
c5aa993b | 8666 | |
c906108c | 8667 | if (sals.nelts != 1) |
8a3fe4f8 | 8668 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8669 | |
c906108c | 8670 | sal = sals.sals[0]; |
4a64f543 | 8671 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 8672 | |
c906108c | 8673 | if (*arg) |
8a3fe4f8 | 8674 | error (_("Junk at end of arguments.")); |
c5aa993b | 8675 | |
c906108c | 8676 | resolve_sal_pc (&sal); |
c5aa993b | 8677 | |
ae66c1fc EZ |
8678 | if (anywhere) |
8679 | /* If the user told us to continue until a specified location, | |
8680 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8681 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8682 | null_frame_id, bp_until); | |
ae66c1fc | 8683 | else |
4a64f543 MS |
8684 | /* Otherwise, specify the selected frame, because we want to stop |
8685 | only at the very same frame. */ | |
a6d9a66e UW |
8686 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8687 | get_stack_frame_id (frame), | |
ae66c1fc | 8688 | bp_until); |
c5aa993b | 8689 | |
f107f563 | 8690 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8691 | |
186c406b TT |
8692 | tp = inferior_thread (); |
8693 | thread = tp->num; | |
8694 | ||
ae66c1fc EZ |
8695 | /* Keep within the current frame, or in frames called by the current |
8696 | one. */ | |
edb3359d DJ |
8697 | |
8698 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8699 | { |
edb3359d DJ |
8700 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8701 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8702 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8703 | sal, | |
edb3359d | 8704 | frame_unwind_caller_id (frame), |
f107f563 VP |
8705 | bp_until); |
8706 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
8707 | |
8708 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
8709 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 8710 | } |
c5aa993b | 8711 | |
c906108c | 8712 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 8713 | |
4a64f543 MS |
8714 | /* If we are running asynchronously, and proceed call above has |
8715 | actually managed to start the target, arrange for breakpoints to | |
8716 | be deleted when the target stops. Otherwise, we're already | |
8717 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 8718 | |
8ea051c5 | 8719 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8720 | { |
bfec99b2 PA |
8721 | struct until_break_command_continuation_args *args; |
8722 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8723 | |
bfec99b2 PA |
8724 | args->breakpoint = breakpoint; |
8725 | args->breakpoint2 = breakpoint2; | |
186c406b | 8726 | args->thread_num = thread; |
f107f563 VP |
8727 | |
8728 | discard_cleanups (old_chain); | |
95e54da7 PA |
8729 | add_continuation (inferior_thread (), |
8730 | until_break_command_continuation, args, | |
604ead4a | 8731 | xfree); |
f107f563 VP |
8732 | } |
8733 | else | |
c5aa993b | 8734 | do_cleanups (old_chain); |
c906108c | 8735 | } |
ae66c1fc | 8736 | |
c906108c | 8737 | static void |
fba45db2 | 8738 | ep_skip_leading_whitespace (char **s) |
c906108c | 8739 | { |
c5aa993b JM |
8740 | if ((s == NULL) || (*s == NULL)) |
8741 | return; | |
8742 | while (isspace (**s)) | |
8743 | *s += 1; | |
c906108c | 8744 | } |
c5aa993b | 8745 | |
c906108c SS |
8746 | /* This function attempts to parse an optional "if <cond>" clause |
8747 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8748 | |
c906108c SS |
8749 | Else, it returns a pointer to the condition string. (It does not |
8750 | attempt to evaluate the string against a particular block.) And, | |
8751 | it updates arg to point to the first character following the parsed | |
4a64f543 | 8752 | if clause in the arg string. */ |
53a5351d | 8753 | |
c906108c | 8754 | static char * |
fba45db2 | 8755 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8756 | { |
c5aa993b JM |
8757 | char *cond_string; |
8758 | ||
8759 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8760 | return NULL; |
c5aa993b | 8761 | |
4a64f543 | 8762 | /* Skip the "if" keyword. */ |
c906108c | 8763 | (*arg) += 2; |
c5aa993b | 8764 | |
c906108c | 8765 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 8766 | condition string. */ |
c906108c SS |
8767 | ep_skip_leading_whitespace (arg); |
8768 | cond_string = *arg; | |
c5aa993b | 8769 | |
4a64f543 MS |
8770 | /* Assume that the condition occupies the remainder of the arg |
8771 | string. */ | |
c906108c | 8772 | (*arg) += strlen (cond_string); |
c5aa993b | 8773 | |
c906108c SS |
8774 | return cond_string; |
8775 | } | |
c5aa993b | 8776 | |
c906108c SS |
8777 | /* Commands to deal with catching events, such as signals, exceptions, |
8778 | process start/exit, etc. */ | |
c5aa993b JM |
8779 | |
8780 | typedef enum | |
8781 | { | |
44feb3ce TT |
8782 | catch_fork_temporary, catch_vfork_temporary, |
8783 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8784 | } |
8785 | catch_fork_kind; | |
8786 | ||
c906108c | 8787 | static void |
cc59ec59 MS |
8788 | catch_fork_command_1 (char *arg, int from_tty, |
8789 | struct cmd_list_element *command) | |
c906108c | 8790 | { |
a6d9a66e | 8791 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8792 | char *cond_string = NULL; |
44feb3ce TT |
8793 | catch_fork_kind fork_kind; |
8794 | int tempflag; | |
8795 | ||
8796 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8797 | tempflag = (fork_kind == catch_fork_temporary | |
8798 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8799 | |
44feb3ce TT |
8800 | if (!arg) |
8801 | arg = ""; | |
c906108c | 8802 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8803 | |
c906108c | 8804 | /* The allowed syntax is: |
c5aa993b JM |
8805 | catch [v]fork |
8806 | catch [v]fork if <cond> | |
8807 | ||
4a64f543 | 8808 | First, check if there's an if clause. */ |
c906108c | 8809 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 8810 | |
c906108c | 8811 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8812 | error (_("Junk at end of arguments.")); |
c5aa993b | 8813 | |
c906108c | 8814 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 8815 | and enable reporting of such events. */ |
c5aa993b JM |
8816 | switch (fork_kind) |
8817 | { | |
44feb3ce TT |
8818 | case catch_fork_temporary: |
8819 | case catch_fork_permanent: | |
a6d9a66e | 8820 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8821 | &catch_fork_breakpoint_ops); |
c906108c | 8822 | break; |
44feb3ce TT |
8823 | case catch_vfork_temporary: |
8824 | case catch_vfork_permanent: | |
a6d9a66e | 8825 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8826 | &catch_vfork_breakpoint_ops); |
c906108c | 8827 | break; |
c5aa993b | 8828 | default: |
8a3fe4f8 | 8829 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8830 | break; |
c5aa993b | 8831 | } |
c906108c SS |
8832 | } |
8833 | ||
8834 | static void | |
cc59ec59 MS |
8835 | catch_exec_command_1 (char *arg, int from_tty, |
8836 | struct cmd_list_element *command) | |
c906108c | 8837 | { |
a6d9a66e | 8838 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8839 | int tempflag; |
c5aa993b | 8840 | char *cond_string = NULL; |
c906108c | 8841 | |
44feb3ce TT |
8842 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8843 | ||
8844 | if (!arg) | |
8845 | arg = ""; | |
c906108c SS |
8846 | ep_skip_leading_whitespace (&arg); |
8847 | ||
8848 | /* The allowed syntax is: | |
c5aa993b JM |
8849 | catch exec |
8850 | catch exec if <cond> | |
c906108c | 8851 | |
4a64f543 | 8852 | First, check if there's an if clause. */ |
c906108c SS |
8853 | cond_string = ep_parse_optional_if_clause (&arg); |
8854 | ||
8855 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8856 | error (_("Junk at end of arguments.")); |
c906108c SS |
8857 | |
8858 | /* If this target supports it, create an exec catchpoint | |
4a64f543 | 8859 | and enable reporting of such events. */ |
a6d9a66e UW |
8860 | create_catchpoint (gdbarch, tempflag, cond_string, |
8861 | &catch_exec_breakpoint_ops); | |
c906108c | 8862 | } |
c5aa993b | 8863 | |
3086aeae DJ |
8864 | static enum print_stop_action |
8865 | print_exception_catchpoint (struct breakpoint *b) | |
8866 | { | |
ade92717 | 8867 | int bp_temp, bp_throw; |
3086aeae | 8868 | |
ade92717 | 8869 | annotate_catchpoint (b->number); |
3086aeae | 8870 | |
ade92717 AR |
8871 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8872 | if (b->loc->address != b->loc->requested_address) | |
8873 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8874 | b->loc->address, | |
8875 | b->number, 1); | |
df2b6d2d | 8876 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8877 | ui_out_text (uiout, |
8878 | bp_temp ? "Temporary catchpoint " | |
8879 | : "Catchpoint "); | |
8880 | if (!ui_out_is_mi_like_p (uiout)) | |
8881 | ui_out_field_int (uiout, "bkptno", b->number); | |
8882 | ui_out_text (uiout, | |
c0b37c48 AR |
8883 | bp_throw ? " (exception thrown), " |
8884 | : " (exception caught), "); | |
ade92717 AR |
8885 | if (ui_out_is_mi_like_p (uiout)) |
8886 | { | |
8887 | ui_out_field_string (uiout, "reason", | |
8888 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8889 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8890 | ui_out_field_int (uiout, "bkptno", b->number); | |
8891 | } | |
3086aeae DJ |
8892 | return PRINT_SRC_AND_LOC; |
8893 | } | |
8894 | ||
8895 | static void | |
cc59ec59 MS |
8896 | print_one_exception_catchpoint (struct breakpoint *b, |
8897 | struct bp_location **last_loc) | |
3086aeae | 8898 | { |
79a45b7d | 8899 | struct value_print_options opts; |
cc59ec59 | 8900 | |
79a45b7d TT |
8901 | get_user_print_options (&opts); |
8902 | if (opts.addressprint) | |
3086aeae DJ |
8903 | { |
8904 | annotate_field (4); | |
604133b5 AR |
8905 | if (b->loc == NULL || b->loc->shlib_disabled) |
8906 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8907 | else | |
5af949e3 UW |
8908 | ui_out_field_core_addr (uiout, "addr", |
8909 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8910 | } |
8911 | annotate_field (5); | |
604133b5 | 8912 | if (b->loc) |
a6d9a66e | 8913 | *last_loc = b->loc; |
3086aeae DJ |
8914 | if (strstr (b->addr_string, "throw") != NULL) |
8915 | ui_out_field_string (uiout, "what", "exception throw"); | |
8916 | else | |
8917 | ui_out_field_string (uiout, "what", "exception catch"); | |
8918 | } | |
8919 | ||
8920 | static void | |
8921 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8922 | { | |
ade92717 AR |
8923 | int bp_temp; |
8924 | int bp_throw; | |
8925 | ||
df2b6d2d | 8926 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8927 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8928 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8929 | : _("Catchpoint ")); | |
8930 | ui_out_field_int (uiout, "bkptno", b->number); | |
8931 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8932 | : _(" (catch)")); | |
3086aeae DJ |
8933 | } |
8934 | ||
6149aea9 PA |
8935 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
8936 | catch catchpoints. */ | |
8937 | ||
8938 | static void | |
4a64f543 MS |
8939 | print_recreate_exception_catchpoint (struct breakpoint *b, |
8940 | struct ui_file *fp) | |
6149aea9 PA |
8941 | { |
8942 | int bp_temp; | |
8943 | int bp_throw; | |
8944 | ||
8945 | bp_temp = b->disposition == disp_del; | |
8946 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
8947 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
8948 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
8949 | } | |
8950 | ||
3086aeae | 8951 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { |
ce78b96d JB |
8952 | NULL, /* insert */ |
8953 | NULL, /* remove */ | |
8954 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8955 | print_exception_catchpoint, |
8956 | print_one_exception_catchpoint, | |
6149aea9 PA |
8957 | print_mention_exception_catchpoint, |
8958 | print_recreate_exception_catchpoint | |
3086aeae DJ |
8959 | }; |
8960 | ||
8961 | static int | |
8962 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8963 | enum exception_event_kind ex_event, int from_tty) | |
8964 | { | |
604133b5 AR |
8965 | char *trigger_func_name; |
8966 | ||
3086aeae | 8967 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8968 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8969 | else |
604133b5 | 8970 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8971 | |
8cdf0e15 VP |
8972 | create_breakpoint (get_current_arch (), |
8973 | trigger_func_name, cond_string, -1, | |
8974 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 8975 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
8976 | 0, |
8977 | AUTO_BOOLEAN_TRUE /* pending */, | |
8978 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
8979 | 1 /* enabled */, |
8980 | 0 /* internal */); | |
3086aeae | 8981 | |
3086aeae DJ |
8982 | return 1; |
8983 | } | |
8984 | ||
4a64f543 | 8985 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
8986 | |
8987 | static void | |
fba45db2 KB |
8988 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8989 | int tempflag, int from_tty) | |
c906108c | 8990 | { |
c5aa993b | 8991 | char *cond_string = NULL; |
c5aa993b | 8992 | |
44feb3ce TT |
8993 | if (!arg) |
8994 | arg = ""; | |
c906108c | 8995 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8996 | |
c906108c SS |
8997 | cond_string = ep_parse_optional_if_clause (&arg); |
8998 | ||
8999 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9000 | error (_("Junk at end of arguments.")); |
c906108c | 9001 | |
059fb39f PM |
9002 | if (ex_event != EX_EVENT_THROW |
9003 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9004 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9005 | |
3086aeae DJ |
9006 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9007 | return; | |
9008 | ||
8a3fe4f8 | 9009 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9010 | } |
9011 | ||
44feb3ce TT |
9012 | /* Implementation of "catch catch" command. */ |
9013 | ||
9014 | static void | |
9015 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9016 | { | |
9017 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9018 | |
44feb3ce TT |
9019 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9020 | } | |
9021 | ||
9022 | /* Implementation of "catch throw" command. */ | |
9023 | ||
9024 | static void | |
9025 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9026 | { | |
9027 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9028 | |
44feb3ce TT |
9029 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9030 | } | |
9031 | ||
f7f9143b JB |
9032 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
9033 | ||
9034 | static void | |
a6d9a66e UW |
9035 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
9036 | struct symtab_and_line sal, | |
f7f9143b JB |
9037 | char *addr_string, |
9038 | char *exp_string, | |
9039 | char *cond_string, | |
9040 | struct expression *cond, | |
9041 | struct breakpoint_ops *ops, | |
9042 | int tempflag, | |
9043 | int from_tty) | |
9044 | { | |
9045 | struct breakpoint *b; | |
9046 | ||
9047 | if (from_tty) | |
9048 | { | |
5af949e3 UW |
9049 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9050 | if (!loc_gdbarch) | |
9051 | loc_gdbarch = gdbarch; | |
9052 | ||
6c95b8df PA |
9053 | describe_other_breakpoints (loc_gdbarch, |
9054 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9055 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9056 | version for exception catchpoints, because two catchpoints | |
9057 | used for different exception names will use the same address. | |
9058 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9059 | unproductive. Besides, the warning phrasing is also a bit |
f7f9143b JB |
9060 | inapropriate, we should use the word catchpoint, and tell |
9061 | the user what type of catchpoint it is. The above is good | |
9062 | enough for now, though. */ | |
9063 | } | |
9064 | ||
a6d9a66e | 9065 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
9066 | set_breakpoint_count (breakpoint_count + 1); |
9067 | ||
9068 | b->enable_state = bp_enabled; | |
9069 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
9070 | b->number = breakpoint_count; | |
9071 | b->ignore_count = 0; | |
511a6cd4 | 9072 | b->loc->cond = cond; |
f7f9143b JB |
9073 | b->addr_string = addr_string; |
9074 | b->language = language_ada; | |
9075 | b->cond_string = cond_string; | |
9076 | b->exp_string = exp_string; | |
9077 | b->thread = -1; | |
9078 | b->ops = ops; | |
f7f9143b JB |
9079 | |
9080 | mention (b); | |
b60e7edf | 9081 | update_global_location_list (1); |
f7f9143b JB |
9082 | } |
9083 | ||
9084 | /* Implement the "catch exception" command. */ | |
9085 | ||
9086 | static void | |
44feb3ce TT |
9087 | catch_ada_exception_command (char *arg, int from_tty, |
9088 | struct cmd_list_element *command) | |
f7f9143b | 9089 | { |
a6d9a66e | 9090 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9091 | int tempflag; |
f7f9143b | 9092 | struct symtab_and_line sal; |
f7f9143b JB |
9093 | char *addr_string = NULL; |
9094 | char *exp_string = NULL; | |
9095 | char *cond_string = NULL; | |
9096 | struct expression *cond = NULL; | |
9097 | struct breakpoint_ops *ops = NULL; | |
9098 | ||
44feb3ce TT |
9099 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9100 | ||
9101 | if (!arg) | |
9102 | arg = ""; | |
f7f9143b JB |
9103 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
9104 | &cond_string, &cond, &ops); | |
a6d9a66e | 9105 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
9106 | cond_string, cond, ops, tempflag, |
9107 | from_tty); | |
9108 | } | |
9109 | ||
a96d9b2e SDJ |
9110 | /* Cleanup function for a syscall filter list. */ |
9111 | static void | |
9112 | clean_up_filters (void *arg) | |
9113 | { | |
9114 | VEC(int) *iter = *(VEC(int) **) arg; | |
9115 | VEC_free (int, iter); | |
9116 | } | |
9117 | ||
9118 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
9119 | filter list, or NULL if no filtering is required. */ | |
9120 | static VEC(int) * | |
9121 | catch_syscall_split_args (char *arg) | |
9122 | { | |
9123 | VEC(int) *result = NULL; | |
9124 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
9125 | ||
9126 | while (*arg != '\0') | |
9127 | { | |
9128 | int i, syscall_number; | |
9129 | char *endptr; | |
9130 | char cur_name[128]; | |
9131 | struct syscall s; | |
9132 | ||
9133 | /* Skip whitespace. */ | |
9134 | while (isspace (*arg)) | |
9135 | arg++; | |
9136 | ||
9137 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9138 | cur_name[i] = arg[i]; | |
9139 | cur_name[i] = '\0'; | |
9140 | arg += i; | |
9141 | ||
9142 | /* Check if the user provided a syscall name or a number. */ | |
9143 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9144 | if (*endptr == '\0') | |
bccd0dd2 | 9145 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9146 | else |
9147 | { | |
9148 | /* We have a name. Let's check if it's valid and convert it | |
9149 | to a number. */ | |
9150 | get_syscall_by_name (cur_name, &s); | |
9151 | ||
9152 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9153 | /* Here we have to issue an error instead of a warning, |
9154 | because GDB cannot do anything useful if there's no | |
9155 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9156 | error (_("Unknown syscall name '%s'."), cur_name); |
9157 | } | |
9158 | ||
9159 | /* Ok, it's valid. */ | |
9160 | VEC_safe_push (int, result, s.number); | |
9161 | } | |
9162 | ||
9163 | discard_cleanups (cleanup); | |
9164 | return result; | |
9165 | } | |
9166 | ||
9167 | /* Implement the "catch syscall" command. */ | |
9168 | ||
9169 | static void | |
cc59ec59 MS |
9170 | catch_syscall_command_1 (char *arg, int from_tty, |
9171 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9172 | { |
9173 | int tempflag; | |
9174 | VEC(int) *filter; | |
9175 | struct syscall s; | |
9176 | struct gdbarch *gdbarch = get_current_arch (); | |
9177 | ||
9178 | /* Checking if the feature if supported. */ | |
9179 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9180 | error (_("The feature 'catch syscall' is not supported on \ | |
9181 | this architeture yet.")); | |
9182 | ||
9183 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9184 | ||
9185 | ep_skip_leading_whitespace (&arg); | |
9186 | ||
9187 | /* We need to do this first "dummy" translation in order | |
9188 | to get the syscall XML file loaded or, most important, | |
9189 | to display a warning to the user if there's no XML file | |
9190 | for his/her architecture. */ | |
9191 | get_syscall_by_number (0, &s); | |
9192 | ||
9193 | /* The allowed syntax is: | |
9194 | catch syscall | |
9195 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9196 | ||
9197 | Let's check if there's a syscall name. */ | |
9198 | ||
9199 | if (arg != NULL) | |
9200 | filter = catch_syscall_split_args (arg); | |
9201 | else | |
9202 | filter = NULL; | |
9203 | ||
9204 | create_syscall_event_catchpoint (tempflag, filter, | |
9205 | &catch_syscall_breakpoint_ops); | |
9206 | } | |
9207 | ||
f7f9143b JB |
9208 | /* Implement the "catch assert" command. */ |
9209 | ||
9210 | static void | |
44feb3ce | 9211 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 9212 | { |
a6d9a66e | 9213 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9214 | int tempflag; |
f7f9143b JB |
9215 | struct symtab_and_line sal; |
9216 | char *addr_string = NULL; | |
9217 | struct breakpoint_ops *ops = NULL; | |
9218 | ||
44feb3ce TT |
9219 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9220 | ||
9221 | if (!arg) | |
9222 | arg = ""; | |
f7f9143b | 9223 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
9224 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
9225 | ops, tempflag, from_tty); | |
f7f9143b JB |
9226 | } |
9227 | ||
c906108c | 9228 | static void |
fba45db2 | 9229 | catch_command (char *arg, int from_tty) |
c906108c | 9230 | { |
44feb3ce | 9231 | error (_("Catch requires an event name.")); |
c906108c SS |
9232 | } |
9233 | \f | |
9234 | ||
9235 | static void | |
fba45db2 | 9236 | tcatch_command (char *arg, int from_tty) |
c906108c | 9237 | { |
44feb3ce | 9238 | error (_("Catch requires an event name.")); |
c906108c SS |
9239 | } |
9240 | ||
80f8a6eb | 9241 | /* Delete breakpoints by address or line. */ |
c906108c SS |
9242 | |
9243 | static void | |
fba45db2 | 9244 | clear_command (char *arg, int from_tty) |
c906108c | 9245 | { |
d6e956e5 VP |
9246 | struct breakpoint *b; |
9247 | VEC(breakpoint_p) *found = 0; | |
9248 | int ix; | |
c906108c SS |
9249 | int default_match; |
9250 | struct symtabs_and_lines sals; | |
9251 | struct symtab_and_line sal; | |
c906108c SS |
9252 | int i; |
9253 | ||
9254 | if (arg) | |
9255 | { | |
9256 | sals = decode_line_spec (arg, 1); | |
9257 | default_match = 0; | |
9258 | } | |
9259 | else | |
9260 | { | |
c5aa993b | 9261 | sals.sals = (struct symtab_and_line *) |
c906108c | 9262 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 9263 | make_cleanup (xfree, sals.sals); |
4a64f543 | 9264 | init_sal (&sal); /* Initialize to zeroes. */ |
c906108c SS |
9265 | sal.line = default_breakpoint_line; |
9266 | sal.symtab = default_breakpoint_symtab; | |
9267 | sal.pc = default_breakpoint_address; | |
6c95b8df | 9268 | sal.pspace = default_breakpoint_pspace; |
c906108c | 9269 | if (sal.symtab == 0) |
8a3fe4f8 | 9270 | error (_("No source file specified.")); |
c906108c SS |
9271 | |
9272 | sals.sals[0] = sal; | |
9273 | sals.nelts = 1; | |
9274 | ||
9275 | default_match = 1; | |
9276 | } | |
9277 | ||
4a64f543 MS |
9278 | /* We don't call resolve_sal_pc here. That's not as bad as it |
9279 | seems, because all existing breakpoints typically have both | |
9280 | file/line and pc set. So, if clear is given file/line, we can | |
9281 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
9282 | |
9283 | We only support clearing given the address explicitly | |
9284 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 9285 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 9286 | due to optimization, all in one block. |
4a64f543 MS |
9287 | |
9288 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
9289 | PC corresponding to the same file:line, the breakpoint won't |
9290 | be cleared. We probably can still clear the breakpoint, but | |
9291 | since the other PC value is never presented to user, user | |
9292 | can only find it by guessing, and it does not seem important | |
9293 | to support that. */ | |
9294 | ||
4a64f543 MS |
9295 | /* For each line spec given, delete bps which correspond to it. Do |
9296 | it in two passes, solely to preserve the current behavior that | |
9297 | from_tty is forced true if we delete more than one | |
9298 | breakpoint. */ | |
c906108c | 9299 | |
80f8a6eb | 9300 | found = NULL; |
c906108c SS |
9301 | for (i = 0; i < sals.nelts; i++) |
9302 | { | |
9303 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
9304 | If line given (pc == 0), clear all bpts on specified line. |
9305 | If defaulting, clear all bpts on default line | |
c906108c | 9306 | or at default pc. |
c5aa993b JM |
9307 | |
9308 | defaulting sal.pc != 0 tests to do | |
9309 | ||
9310 | 0 1 pc | |
9311 | 1 1 pc _and_ line | |
9312 | 0 0 line | |
9313 | 1 0 <can't happen> */ | |
c906108c SS |
9314 | |
9315 | sal = sals.sals[i]; | |
c906108c | 9316 | |
4a64f543 | 9317 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 9318 | ALL_BREAKPOINTS (b) |
c5aa993b | 9319 | { |
0d381245 | 9320 | int match = 0; |
4a64f543 | 9321 | /* Are we going to delete b? */ |
cc60f2e3 | 9322 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
9323 | { |
9324 | struct bp_location *loc = b->loc; | |
9325 | for (; loc; loc = loc->next) | |
9326 | { | |
6c95b8df PA |
9327 | int pc_match = sal.pc |
9328 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
9329 | && (loc->address == sal.pc) |
9330 | && (!section_is_overlay (loc->section) | |
9331 | || loc->section == sal.section); | |
9332 | int line_match = ((default_match || (0 == sal.pc)) | |
9333 | && b->source_file != NULL | |
9334 | && sal.symtab != NULL | |
6c95b8df | 9335 | && sal.pspace == loc->pspace |
0d381245 VP |
9336 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
9337 | && b->line_number == sal.line); | |
9338 | if (pc_match || line_match) | |
9339 | { | |
9340 | match = 1; | |
9341 | break; | |
9342 | } | |
9343 | } | |
9344 | } | |
9345 | ||
9346 | if (match) | |
d6e956e5 | 9347 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 9348 | } |
80f8a6eb MS |
9349 | } |
9350 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 9351 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
9352 | { |
9353 | if (arg) | |
8a3fe4f8 | 9354 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 9355 | else |
8a3fe4f8 | 9356 | error (_("No breakpoint at this line.")); |
80f8a6eb | 9357 | } |
c906108c | 9358 | |
d6e956e5 | 9359 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 9360 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 9361 | if (from_tty) |
a3f17187 | 9362 | { |
d6e956e5 | 9363 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
9364 | printf_unfiltered (_("Deleted breakpoint ")); |
9365 | else | |
9366 | printf_unfiltered (_("Deleted breakpoints ")); | |
9367 | } | |
80f8a6eb | 9368 | breakpoints_changed (); |
d6e956e5 VP |
9369 | |
9370 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 9371 | { |
c5aa993b | 9372 | if (from_tty) |
d6e956e5 VP |
9373 | printf_unfiltered ("%d ", b->number); |
9374 | delete_breakpoint (b); | |
c906108c | 9375 | } |
80f8a6eb MS |
9376 | if (from_tty) |
9377 | putchar_unfiltered ('\n'); | |
c906108c SS |
9378 | } |
9379 | \f | |
9380 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
9381 | all breakpoints that are marked for deletion, whether hit or not. | |
9382 | This is called after any breakpoint is hit, or after errors. */ | |
9383 | ||
9384 | void | |
fba45db2 | 9385 | breakpoint_auto_delete (bpstat bs) |
c906108c | 9386 | { |
35df4500 | 9387 | struct breakpoint *b, *b_tmp; |
c906108c SS |
9388 | |
9389 | for (; bs; bs = bs->next) | |
f431efe5 PA |
9390 | if (bs->breakpoint_at |
9391 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 9392 | && bs->stop) |
f431efe5 | 9393 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 9394 | |
35df4500 | 9395 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9396 | { |
b5de0fa7 | 9397 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
9398 | delete_breakpoint (b); |
9399 | } | |
c906108c SS |
9400 | } |
9401 | ||
4a64f543 MS |
9402 | /* A comparison function for bp_location AP and BP being interfaced to |
9403 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
9404 | does breakpoint_address_is_meaningful say for its OWNER), | |
9405 | secondarily by ordering first bp_permanent OWNERed elements and | |
9406 | terciarily just ensuring the array is sorted stable way despite | |
9407 | qsort being an instable algorithm. */ | |
876fa593 JK |
9408 | |
9409 | static int | |
494cfb0f | 9410 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 9411 | { |
494cfb0f JK |
9412 | struct bp_location *a = *(void **) ap; |
9413 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 9414 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
9415 | int a_perm = a->owner->enable_state == bp_permanent; |
9416 | int b_perm = b->owner->enable_state == bp_permanent; | |
9417 | ||
9418 | if (a->address != b->address) | |
9419 | return (a->address > b->address) - (a->address < b->address); | |
9420 | ||
9421 | /* Sort permanent breakpoints first. */ | |
9422 | if (a_perm != b_perm) | |
9423 | return (a_perm < b_perm) - (a_perm > b_perm); | |
9424 | ||
4a64f543 MS |
9425 | /* Make the user-visible order stable across GDB runs. Locations of |
9426 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
9427 | |
9428 | if (a->owner->number != b->owner->number) | |
9429 | return (a->owner->number > b->owner->number) | |
9430 | - (a->owner->number < b->owner->number); | |
9431 | ||
9432 | return (a > b) - (a < b); | |
9433 | } | |
9434 | ||
876fa593 | 9435 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
9436 | bp_location_shadow_len_after_address_max according to the current |
9437 | content of the bp_location array. */ | |
f7545552 TT |
9438 | |
9439 | static void | |
876fa593 | 9440 | bp_location_target_extensions_update (void) |
f7545552 | 9441 | { |
876fa593 JK |
9442 | struct bp_location *bl, **blp_tmp; |
9443 | ||
9444 | bp_location_placed_address_before_address_max = 0; | |
9445 | bp_location_shadow_len_after_address_max = 0; | |
9446 | ||
9447 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
9448 | { | |
9449 | CORE_ADDR start, end, addr; | |
9450 | ||
9451 | if (!bp_location_has_shadow (bl)) | |
9452 | continue; | |
9453 | ||
9454 | start = bl->target_info.placed_address; | |
9455 | end = start + bl->target_info.shadow_len; | |
9456 | ||
9457 | gdb_assert (bl->address >= start); | |
9458 | addr = bl->address - start; | |
9459 | if (addr > bp_location_placed_address_before_address_max) | |
9460 | bp_location_placed_address_before_address_max = addr; | |
9461 | ||
9462 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
9463 | ||
9464 | gdb_assert (bl->address < end); | |
9465 | addr = end - bl->address; | |
9466 | if (addr > bp_location_shadow_len_after_address_max) | |
9467 | bp_location_shadow_len_after_address_max = addr; | |
9468 | } | |
f7545552 TT |
9469 | } |
9470 | ||
4cd9bd08 | 9471 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
9472 | into the inferior, only remove already-inserted locations that no |
9473 | longer should be inserted. Functions that delete a breakpoint or | |
9474 | breakpoints should pass false, so that deleting a breakpoint | |
9475 | doesn't have the side effect of inserting the locations of other | |
9476 | breakpoints that are marked not-inserted, but should_be_inserted | |
9477 | returns true on them. | |
9478 | ||
9479 | This behaviour is useful is situations close to tear-down -- e.g., | |
9480 | after an exec, while the target still has execution, but breakpoint | |
9481 | shadows of the previous executable image should *NOT* be restored | |
9482 | to the new image; or before detaching, where the target still has | |
9483 | execution and wants to delete breakpoints from GDB's lists, and all | |
9484 | breakpoints had already been removed from the inferior. */ | |
9485 | ||
0d381245 | 9486 | static void |
b60e7edf | 9487 | update_global_location_list (int should_insert) |
0d381245 | 9488 | { |
74960c60 | 9489 | struct breakpoint *b; |
876fa593 | 9490 | struct bp_location **locp, *loc; |
f7545552 TT |
9491 | struct cleanup *cleanups; |
9492 | ||
2d134ed3 PA |
9493 | /* Used in the duplicates detection below. When iterating over all |
9494 | bp_locations, points to the first bp_location of a given address. | |
9495 | Breakpoints and watchpoints of different types are never | |
9496 | duplicates of each other. Keep one pointer for each type of | |
9497 | breakpoint/watchpoint, so we only need to loop over all locations | |
9498 | once. */ | |
9499 | struct bp_location *bp_loc_first; /* breakpoint */ | |
9500 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
9501 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
9502 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 9503 | |
4a64f543 MS |
9504 | /* Saved former bp_location array which we compare against the newly |
9505 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
9506 | struct bp_location **old_location, **old_locp; |
9507 | unsigned old_location_count; | |
9508 | ||
9509 | old_location = bp_location; | |
9510 | old_location_count = bp_location_count; | |
9511 | bp_location = NULL; | |
9512 | bp_location_count = 0; | |
9513 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 9514 | |
74960c60 | 9515 | ALL_BREAKPOINTS (b) |
876fa593 JK |
9516 | for (loc = b->loc; loc; loc = loc->next) |
9517 | bp_location_count++; | |
9518 | ||
9519 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
9520 | locp = bp_location; | |
9521 | ALL_BREAKPOINTS (b) | |
9522 | for (loc = b->loc; loc; loc = loc->next) | |
9523 | *locp++ = loc; | |
9524 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 9525 | bp_location_compare); |
876fa593 JK |
9526 | |
9527 | bp_location_target_extensions_update (); | |
74960c60 | 9528 | |
4a64f543 MS |
9529 | /* Identify bp_location instances that are no longer present in the |
9530 | new list, and therefore should be freed. Note that it's not | |
9531 | necessary that those locations should be removed from inferior -- | |
9532 | if there's another location at the same address (previously | |
9533 | marked as duplicate), we don't need to remove/insert the | |
9534 | location. | |
876fa593 | 9535 | |
4a64f543 MS |
9536 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
9537 | and former bp_location array state respectively. */ | |
876fa593 JK |
9538 | |
9539 | locp = bp_location; | |
9540 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
9541 | old_locp++) | |
74960c60 | 9542 | { |
876fa593 | 9543 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 9544 | struct bp_location **loc2p; |
876fa593 | 9545 | |
4a64f543 MS |
9546 | /* Tells if 'old_loc' is found amoung the new locations. If |
9547 | not, we have to free it. */ | |
c7d46a38 | 9548 | int found_object = 0; |
20874c92 VP |
9549 | /* Tells if the location should remain inserted in the target. */ |
9550 | int keep_in_target = 0; | |
9551 | int removed = 0; | |
876fa593 | 9552 | |
4a64f543 MS |
9553 | /* Skip LOCP entries which will definitely never be needed. |
9554 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 9555 | while (locp < bp_location + bp_location_count |
c7d46a38 | 9556 | && (*locp)->address < old_loc->address) |
876fa593 | 9557 | locp++; |
c7d46a38 PA |
9558 | |
9559 | for (loc2p = locp; | |
9560 | (loc2p < bp_location + bp_location_count | |
9561 | && (*loc2p)->address == old_loc->address); | |
9562 | loc2p++) | |
9563 | { | |
9564 | if (*loc2p == old_loc) | |
9565 | { | |
9566 | found_object = 1; | |
9567 | break; | |
9568 | } | |
9569 | } | |
74960c60 | 9570 | |
4a64f543 MS |
9571 | /* If this location is no longer present, and inserted, look if |
9572 | there's maybe a new location at the same address. If so, | |
9573 | mark that one inserted, and don't remove this one. This is | |
9574 | needed so that we don't have a time window where a breakpoint | |
9575 | at certain location is not inserted. */ | |
74960c60 | 9576 | |
876fa593 | 9577 | if (old_loc->inserted) |
0d381245 | 9578 | { |
4a64f543 MS |
9579 | /* If the location is inserted now, we might have to remove |
9580 | it. */ | |
74960c60 | 9581 | |
876fa593 | 9582 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 9583 | { |
4a64f543 MS |
9584 | /* The location is still present in the location list, |
9585 | and still should be inserted. Don't do anything. */ | |
20874c92 | 9586 | keep_in_target = 1; |
74960c60 VP |
9587 | } |
9588 | else | |
9589 | { | |
4a64f543 MS |
9590 | /* The location is either no longer present, or got |
9591 | disabled. See if there's another location at the | |
9592 | same address, in which case we don't need to remove | |
9593 | this one from the target. */ | |
876fa593 | 9594 | |
2bdf28a0 | 9595 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
9596 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
9597 | { | |
876fa593 | 9598 | for (loc2p = locp; |
c7d46a38 PA |
9599 | (loc2p < bp_location + bp_location_count |
9600 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
9601 | loc2p++) |
9602 | { | |
9603 | struct bp_location *loc2 = *loc2p; | |
9604 | ||
2d134ed3 | 9605 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
9606 | { |
9607 | /* For the sake of should_be_inserted. | |
4a64f543 MS |
9608 | Duplicates check below will fix up this |
9609 | later. */ | |
c7d46a38 | 9610 | loc2->duplicate = 0; |
85d721b8 PA |
9611 | |
9612 | /* Read watchpoint locations are switched to | |
9613 | access watchpoints, if the former are not | |
9614 | supported, but the latter are. */ | |
9615 | if (is_hardware_watchpoint (old_loc->owner)) | |
9616 | { | |
9617 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
9618 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
9619 | } | |
9620 | ||
c7d46a38 PA |
9621 | if (loc2 != old_loc && should_be_inserted (loc2)) |
9622 | { | |
9623 | loc2->inserted = 1; | |
9624 | loc2->target_info = old_loc->target_info; | |
9625 | keep_in_target = 1; | |
9626 | break; | |
9627 | } | |
876fa593 JK |
9628 | } |
9629 | } | |
9630 | } | |
74960c60 VP |
9631 | } |
9632 | ||
20874c92 VP |
9633 | if (!keep_in_target) |
9634 | { | |
876fa593 | 9635 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 9636 | { |
4a64f543 MS |
9637 | /* This is just about all we can do. We could keep |
9638 | this location on the global list, and try to | |
9639 | remove it next time, but there's no particular | |
9640 | reason why we will succeed next time. | |
20874c92 | 9641 | |
4a64f543 MS |
9642 | Note that at this point, old_loc->owner is still |
9643 | valid, as delete_breakpoint frees the breakpoint | |
9644 | only after calling us. */ | |
20874c92 | 9645 | printf_filtered (_("warning: Error removing breakpoint %d\n"), |
876fa593 | 9646 | old_loc->owner->number); |
20874c92 VP |
9647 | } |
9648 | removed = 1; | |
9649 | } | |
0d381245 | 9650 | } |
74960c60 VP |
9651 | |
9652 | if (!found_object) | |
1c5cfe86 | 9653 | { |
db82e815 PA |
9654 | if (removed && non_stop |
9655 | && breakpoint_address_is_meaningful (old_loc->owner) | |
9656 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 9657 | { |
db82e815 PA |
9658 | /* This location was removed from the target. In |
9659 | non-stop mode, a race condition is possible where | |
9660 | we've removed a breakpoint, but stop events for that | |
9661 | breakpoint are already queued and will arrive later. | |
9662 | We apply an heuristic to be able to distinguish such | |
9663 | SIGTRAPs from other random SIGTRAPs: we keep this | |
9664 | breakpoint location for a bit, and will retire it | |
9665 | after we see some number of events. The theory here | |
9666 | is that reporting of events should, "on the average", | |
9667 | be fair, so after a while we'll see events from all | |
9668 | threads that have anything of interest, and no longer | |
9669 | need to keep this breakpoint location around. We | |
9670 | don't hold locations forever so to reduce chances of | |
9671 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
9672 | SIGTRAP. | |
9673 | ||
9674 | The heuristic failing can be disastrous on | |
9675 | decr_pc_after_break targets. | |
9676 | ||
9677 | On decr_pc_after_break targets, like e.g., x86-linux, | |
9678 | if we fail to recognize a late breakpoint SIGTRAP, | |
9679 | because events_till_retirement has reached 0 too | |
9680 | soon, we'll fail to do the PC adjustment, and report | |
9681 | a random SIGTRAP to the user. When the user resumes | |
9682 | the inferior, it will most likely immediately crash | |
2dec564e | 9683 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
9684 | corrupted, because of being resumed e.g., in the |
9685 | middle of a multi-byte instruction, or skipped a | |
9686 | one-byte instruction. This was actually seen happen | |
9687 | on native x86-linux, and should be less rare on | |
9688 | targets that do not support new thread events, like | |
9689 | remote, due to the heuristic depending on | |
9690 | thread_count. | |
9691 | ||
9692 | Mistaking a random SIGTRAP for a breakpoint trap | |
9693 | causes similar symptoms (PC adjustment applied when | |
9694 | it shouldn't), but then again, playing with SIGTRAPs | |
9695 | behind the debugger's back is asking for trouble. | |
9696 | ||
9697 | Since hardware watchpoint traps are always | |
9698 | distinguishable from other traps, so we don't need to | |
9699 | apply keep hardware watchpoint moribund locations | |
9700 | around. We simply always ignore hardware watchpoint | |
9701 | traps we can no longer explain. */ | |
9702 | ||
876fa593 JK |
9703 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9704 | old_loc->owner = NULL; | |
20874c92 | 9705 | |
876fa593 | 9706 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9707 | } |
9708 | else | |
f431efe5 PA |
9709 | { |
9710 | old_loc->owner = NULL; | |
9711 | decref_bp_location (&old_loc); | |
9712 | } | |
20874c92 | 9713 | } |
74960c60 | 9714 | } |
1c5cfe86 | 9715 | |
2d134ed3 PA |
9716 | /* Rescan breakpoints at the same address and section, marking the |
9717 | first one as "first" and any others as "duplicates". This is so | |
9718 | that the bpt instruction is only inserted once. If we have a | |
9719 | permanent breakpoint at the same place as BPT, make that one the | |
9720 | official one, and the rest as duplicates. Permanent breakpoints | |
9721 | are sorted first for the same address. | |
9722 | ||
9723 | Do the same for hardware watchpoints, but also considering the | |
9724 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9725 | |
2d134ed3 PA |
9726 | bp_loc_first = NULL; |
9727 | wp_loc_first = NULL; | |
9728 | awp_loc_first = NULL; | |
9729 | rwp_loc_first = NULL; | |
876fa593 | 9730 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9731 | { |
4a64f543 MS |
9732 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always |
9733 | non-NULL. */ | |
876fa593 | 9734 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9735 | struct bp_location **loc_first_p; |
876fa593 JK |
9736 | |
9737 | if (b->enable_state == bp_disabled | |
9738 | || b->enable_state == bp_call_disabled | |
9739 | || b->enable_state == bp_startup_disabled | |
9740 | || !loc->enabled | |
9741 | || loc->shlib_disabled | |
15c3d785 | 9742 | || !breakpoint_address_is_meaningful (b) |
d77f58be | 9743 | || is_tracepoint (b)) |
876fa593 JK |
9744 | continue; |
9745 | ||
9746 | /* Permanent breakpoint should always be inserted. */ | |
9747 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9748 | internal_error (__FILE__, __LINE__, | |
9749 | _("allegedly permanent breakpoint is not " | |
9750 | "actually inserted")); | |
9751 | ||
2d134ed3 PA |
9752 | if (b->type == bp_hardware_watchpoint) |
9753 | loc_first_p = &wp_loc_first; | |
9754 | else if (b->type == bp_read_watchpoint) | |
9755 | loc_first_p = &rwp_loc_first; | |
9756 | else if (b->type == bp_access_watchpoint) | |
9757 | loc_first_p = &awp_loc_first; | |
9758 | else | |
9759 | loc_first_p = &bp_loc_first; | |
9760 | ||
9761 | if (*loc_first_p == NULL | |
9762 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9763 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9764 | { |
2d134ed3 | 9765 | *loc_first_p = loc; |
876fa593 JK |
9766 | loc->duplicate = 0; |
9767 | continue; | |
9768 | } | |
9769 | ||
9770 | loc->duplicate = 1; | |
9771 | ||
2d134ed3 PA |
9772 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9773 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9774 | internal_error (__FILE__, __LINE__, |
9775 | _("another breakpoint was inserted on top of " | |
9776 | "a permanent breakpoint")); | |
0d381245 | 9777 | } |
74960c60 | 9778 | |
50c71eaf | 9779 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9780 | && (have_live_inferiors () |
2567c7d9 | 9781 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9782 | insert_breakpoint_locations (); |
f7545552 TT |
9783 | |
9784 | do_cleanups (cleanups); | |
74960c60 VP |
9785 | } |
9786 | ||
20874c92 VP |
9787 | void |
9788 | breakpoint_retire_moribund (void) | |
9789 | { | |
9790 | struct bp_location *loc; | |
9791 | int ix; | |
9792 | ||
9793 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9794 | if (--(loc->events_till_retirement) == 0) | |
9795 | { | |
f431efe5 | 9796 | decref_bp_location (&loc); |
20874c92 VP |
9797 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); |
9798 | --ix; | |
9799 | } | |
9800 | } | |
9801 | ||
74960c60 | 9802 | static void |
b60e7edf | 9803 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9804 | { |
9805 | struct gdb_exception e; | |
cc59ec59 | 9806 | |
74960c60 | 9807 | TRY_CATCH (e, RETURN_MASK_ERROR) |
b60e7edf | 9808 | update_global_location_list (inserting); |
0d381245 VP |
9809 | } |
9810 | ||
f431efe5 PA |
9811 | /* Clear BKP from a BPS. */ |
9812 | ||
a474d7c2 | 9813 | static void |
f431efe5 | 9814 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) |
a474d7c2 PA |
9815 | { |
9816 | bpstat bs; | |
cc59ec59 | 9817 | |
a474d7c2 | 9818 | for (bs = bps; bs; bs = bs->next) |
f431efe5 | 9819 | if (bs->breakpoint_at == bpt) |
a474d7c2 PA |
9820 | { |
9821 | bs->breakpoint_at = NULL; | |
9822 | bs->old_val = NULL; | |
9823 | /* bs->commands will be freed later. */ | |
9824 | } | |
9825 | } | |
9826 | ||
9827 | /* Callback for iterate_over_threads. */ | |
9828 | static int | |
f431efe5 | 9829 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) |
a474d7c2 | 9830 | { |
f431efe5 | 9831 | struct breakpoint *bpt = data; |
cc59ec59 | 9832 | |
16c381f0 | 9833 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); |
a474d7c2 PA |
9834 | return 0; |
9835 | } | |
9836 | ||
53a5351d | 9837 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 9838 | structures. */ |
c906108c SS |
9839 | |
9840 | void | |
fba45db2 | 9841 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9842 | { |
52f0bd74 | 9843 | struct breakpoint *b; |
c906108c | 9844 | |
8a3fe4f8 | 9845 | gdb_assert (bpt != NULL); |
c906108c | 9846 | |
4a64f543 MS |
9847 | /* Has this bp already been deleted? This can happen because |
9848 | multiple lists can hold pointers to bp's. bpstat lists are | |
9849 | especial culprits. | |
9850 | ||
9851 | One example of this happening is a watchpoint's scope bp. When | |
9852 | the scope bp triggers, we notice that the watchpoint is out of | |
9853 | scope, and delete it. We also delete its scope bp. But the | |
9854 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
9855 | That bpstat is then checked for auto-deleting bp's, which are | |
9856 | deleted. | |
9857 | ||
9858 | A real solution to this problem might involve reference counts in | |
9859 | bp's, and/or giving them pointers back to their referencing | |
9860 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
9861 | storage when no more references were extent. A cheaper bandaid | |
9862 | was chosen. */ | |
c906108c SS |
9863 | if (bpt->type == bp_none) |
9864 | return; | |
9865 | ||
4a64f543 MS |
9866 | /* At least avoid this stale reference until the reference counting |
9867 | of breakpoints gets resolved. */ | |
e5a0a904 JK |
9868 | if (bpt->related_breakpoint != NULL) |
9869 | { | |
9870 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9871 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9872 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9873 | bpt->related_breakpoint = NULL; | |
9874 | } | |
9875 | ||
383f836e | 9876 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9877 | |
c906108c SS |
9878 | if (breakpoint_chain == bpt) |
9879 | breakpoint_chain = bpt->next; | |
9880 | ||
c906108c SS |
9881 | ALL_BREAKPOINTS (b) |
9882 | if (b->next == bpt) | |
c5aa993b JM |
9883 | { |
9884 | b->next = bpt->next; | |
9885 | break; | |
9886 | } | |
c906108c | 9887 | |
9add0f1b | 9888 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9889 | xfree (bpt->cond_string); |
9890 | xfree (bpt->cond_exp); | |
9891 | xfree (bpt->addr_string); | |
9892 | xfree (bpt->exp); | |
9893 | xfree (bpt->exp_string); | |
d63d0675 | 9894 | xfree (bpt->exp_string_reparse); |
60e1c644 PA |
9895 | value_free (bpt->val); |
9896 | xfree (bpt->source_file); | |
9897 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9898 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c | 9899 | |
f431efe5 PA |
9900 | |
9901 | /* Be sure no bpstat's are pointing at the breakpoint after it's | |
9902 | been freed. */ | |
9903 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
9904 | in all threeds for now. Note that we cannot just remove bpstats | |
9905 | pointing at bpt from the stop_bpstat list entirely, as breakpoint | |
9906 | commands are associated with the bpstat; if we remove it here, | |
9907 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
9908 | event-top.c won't do anything, and temporary breakpoints with | |
9909 | commands won't work. */ | |
9910 | ||
9911 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
9912 | ||
4a64f543 MS |
9913 | /* Now that breakpoint is removed from breakpoint list, update the |
9914 | global location list. This will remove locations that used to | |
9915 | belong to this breakpoint. Do this before freeing the breakpoint | |
9916 | itself, since remove_breakpoint looks at location's owner. It | |
9917 | might be better design to have location completely | |
9918 | self-contained, but it's not the case now. */ | |
b60e7edf | 9919 | update_global_location_list (0); |
74960c60 VP |
9920 | |
9921 | ||
4a64f543 MS |
9922 | /* On the chance that someone will soon try again to delete this |
9923 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c SS |
9924 | bpt->type = bp_none; |
9925 | ||
b8c9b27d | 9926 | xfree (bpt); |
c906108c SS |
9927 | } |
9928 | ||
4d6140d9 AC |
9929 | static void |
9930 | do_delete_breakpoint_cleanup (void *b) | |
9931 | { | |
9932 | delete_breakpoint (b); | |
9933 | } | |
9934 | ||
9935 | struct cleanup * | |
9936 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9937 | { | |
9938 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9939 | } | |
9940 | ||
95a42b64 TT |
9941 | /* A callback for map_breakpoint_numbers that calls |
9942 | delete_breakpoint. */ | |
9943 | ||
9944 | static void | |
9945 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9946 | { | |
9947 | delete_breakpoint (b); | |
9948 | } | |
9949 | ||
c906108c | 9950 | void |
fba45db2 | 9951 | delete_command (char *arg, int from_tty) |
c906108c | 9952 | { |
35df4500 | 9953 | struct breakpoint *b, *b_tmp; |
c906108c | 9954 | |
ea9365bb TT |
9955 | dont_repeat (); |
9956 | ||
c906108c SS |
9957 | if (arg == 0) |
9958 | { | |
9959 | int breaks_to_delete = 0; | |
9960 | ||
9961 | /* Delete all breakpoints if no argument. | |
4a64f543 MS |
9962 | Do not delete internal or call-dummy breakpoints, these have |
9963 | to be deleted with an explicit breakpoint number argument. */ | |
c5aa993b JM |
9964 | ALL_BREAKPOINTS (b) |
9965 | { | |
059fb39f | 9966 | if (b->type != bp_call_dummy |
aa7d318d | 9967 | && b->type != bp_std_terminate |
059fb39f | 9968 | && b->type != bp_shlib_event |
4efc6507 | 9969 | && b->type != bp_jit_event |
059fb39f PM |
9970 | && b->type != bp_thread_event |
9971 | && b->type != bp_overlay_event | |
0fd8e87f | 9972 | && b->type != bp_longjmp_master |
aa7d318d | 9973 | && b->type != bp_std_terminate_master |
186c406b | 9974 | && b->type != bp_exception_master |
059fb39f | 9975 | && b->number >= 0) |
973d738b DJ |
9976 | { |
9977 | breaks_to_delete = 1; | |
9978 | break; | |
9979 | } | |
c5aa993b | 9980 | } |
c906108c SS |
9981 | |
9982 | /* Ask user only if there are some breakpoints to delete. */ | |
9983 | if (!from_tty | |
e2e0b3e5 | 9984 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9985 | { |
35df4500 | 9986 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 9987 | { |
059fb39f | 9988 | if (b->type != bp_call_dummy |
aa7d318d | 9989 | && b->type != bp_std_terminate |
059fb39f PM |
9990 | && b->type != bp_shlib_event |
9991 | && b->type != bp_thread_event | |
4efc6507 | 9992 | && b->type != bp_jit_event |
059fb39f | 9993 | && b->type != bp_overlay_event |
0fd8e87f | 9994 | && b->type != bp_longjmp_master |
aa7d318d | 9995 | && b->type != bp_std_terminate_master |
186c406b | 9996 | && b->type != bp_exception_master |
059fb39f | 9997 | && b->number >= 0) |
c5aa993b JM |
9998 | delete_breakpoint (b); |
9999 | } | |
c906108c SS |
10000 | } |
10001 | } | |
10002 | else | |
95a42b64 | 10003 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
10004 | } |
10005 | ||
0d381245 VP |
10006 | static int |
10007 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 10008 | { |
0d381245 VP |
10009 | for (; loc; loc = loc->next) |
10010 | if (!loc->shlib_disabled) | |
10011 | return 0; | |
10012 | return 1; | |
fe3f5fa8 VP |
10013 | } |
10014 | ||
776592bf DE |
10015 | /* Subroutine of update_breakpoint_locations to simplify it. |
10016 | Return non-zero if multiple fns in list LOC have the same name. | |
10017 | Null names are ignored. */ | |
10018 | ||
10019 | static int | |
10020 | ambiguous_names_p (struct bp_location *loc) | |
10021 | { | |
10022 | struct bp_location *l; | |
10023 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
10024 | (int (*) (const void *, |
10025 | const void *)) streq, | |
776592bf DE |
10026 | NULL, xcalloc, xfree); |
10027 | ||
10028 | for (l = loc; l != NULL; l = l->next) | |
10029 | { | |
10030 | const char **slot; | |
10031 | const char *name = l->function_name; | |
10032 | ||
10033 | /* Allow for some names to be NULL, ignore them. */ | |
10034 | if (name == NULL) | |
10035 | continue; | |
10036 | ||
10037 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
10038 | INSERT); | |
4a64f543 MS |
10039 | /* NOTE: We can assume slot != NULL here because xcalloc never |
10040 | returns NULL. */ | |
776592bf DE |
10041 | if (*slot != NULL) |
10042 | { | |
10043 | htab_delete (htab); | |
10044 | return 1; | |
10045 | } | |
10046 | *slot = name; | |
10047 | } | |
10048 | ||
10049 | htab_delete (htab); | |
10050 | return 0; | |
10051 | } | |
10052 | ||
0fb4aa4b PA |
10053 | /* When symbols change, it probably means the sources changed as well, |
10054 | and it might mean the static tracepoint markers are no longer at | |
10055 | the same address or line numbers they used to be at last we | |
10056 | checked. Losing your static tracepoints whenever you rebuild is | |
10057 | undesirable. This function tries to resync/rematch gdb static | |
10058 | tracepoints with the markers on the target, for static tracepoints | |
10059 | that have not been set by marker id. Static tracepoint that have | |
10060 | been set by marker id are reset by marker id in breakpoint_re_set. | |
10061 | The heuristic is: | |
10062 | ||
10063 | 1) For a tracepoint set at a specific address, look for a marker at | |
10064 | the old PC. If one is found there, assume to be the same marker. | |
10065 | If the name / string id of the marker found is different from the | |
10066 | previous known name, assume that means the user renamed the marker | |
10067 | in the sources, and output a warning. | |
10068 | ||
10069 | 2) For a tracepoint set at a given line number, look for a marker | |
10070 | at the new address of the old line number. If one is found there, | |
10071 | assume to be the same marker. If the name / string id of the | |
10072 | marker found is different from the previous known name, assume that | |
10073 | means the user renamed the marker in the sources, and output a | |
10074 | warning. | |
10075 | ||
10076 | 3) If a marker is no longer found at the same address or line, it | |
10077 | may mean the marker no longer exists. But it may also just mean | |
10078 | the code changed a bit. Maybe the user added a few lines of code | |
10079 | that made the marker move up or down (in line number terms). Ask | |
10080 | the target for info about the marker with the string id as we knew | |
10081 | it. If found, update line number and address in the matching | |
10082 | static tracepoint. This will get confused if there's more than one | |
10083 | marker with the same ID (possible in UST, although unadvised | |
10084 | precisely because it confuses tools). */ | |
10085 | ||
10086 | static struct symtab_and_line | |
10087 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
10088 | { | |
10089 | struct static_tracepoint_marker marker; | |
10090 | CORE_ADDR pc; | |
10091 | int i; | |
10092 | ||
10093 | pc = sal.pc; | |
10094 | if (sal.line) | |
10095 | find_line_pc (sal.symtab, sal.line, &pc); | |
10096 | ||
10097 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
10098 | { | |
10099 | if (strcmp (b->static_trace_marker_id, marker.str_id) != 0) | |
10100 | warning (_("static tracepoint %d changed probed marker from %s to %s"), | |
10101 | b->number, | |
10102 | b->static_trace_marker_id, marker.str_id); | |
10103 | ||
10104 | xfree (b->static_trace_marker_id); | |
10105 | b->static_trace_marker_id = xstrdup (marker.str_id); | |
10106 | release_static_tracepoint_marker (&marker); | |
10107 | ||
10108 | return sal; | |
10109 | } | |
10110 | ||
10111 | /* Old marker wasn't found on target at lineno. Try looking it up | |
10112 | by string ID. */ | |
10113 | if (!sal.explicit_pc | |
10114 | && sal.line != 0 | |
10115 | && sal.symtab != NULL | |
10116 | && b->static_trace_marker_id != NULL) | |
10117 | { | |
10118 | VEC(static_tracepoint_marker_p) *markers; | |
10119 | ||
10120 | markers | |
10121 | = target_static_tracepoint_markers_by_strid (b->static_trace_marker_id); | |
10122 | ||
10123 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
10124 | { | |
10125 | struct symtab_and_line sal; | |
10126 | struct symbol *sym; | |
10127 | struct static_tracepoint_marker *marker; | |
10128 | ||
10129 | marker = VEC_index (static_tracepoint_marker_p, markers, 0); | |
10130 | ||
10131 | xfree (b->static_trace_marker_id); | |
10132 | b->static_trace_marker_id = xstrdup (marker->str_id); | |
10133 | ||
10134 | warning (_("marker for static tracepoint %d (%s) not " | |
10135 | "found at previous line number"), | |
10136 | b->number, b->static_trace_marker_id); | |
10137 | ||
10138 | init_sal (&sal); | |
10139 | ||
10140 | sal.pc = marker->address; | |
10141 | ||
10142 | sal = find_pc_line (marker->address, 0); | |
10143 | sym = find_pc_sect_function (marker->address, NULL); | |
10144 | ui_out_text (uiout, "Now in "); | |
10145 | if (sym) | |
10146 | { | |
10147 | ui_out_field_string (uiout, "func", | |
10148 | SYMBOL_PRINT_NAME (sym)); | |
10149 | ui_out_text (uiout, " at "); | |
10150 | } | |
10151 | ui_out_field_string (uiout, "file", sal.symtab->filename); | |
10152 | ui_out_text (uiout, ":"); | |
10153 | ||
10154 | if (ui_out_is_mi_like_p (uiout)) | |
10155 | { | |
10156 | char *fullname = symtab_to_fullname (sal.symtab); | |
10157 | ||
10158 | if (fullname) | |
10159 | ui_out_field_string (uiout, "fullname", fullname); | |
10160 | } | |
10161 | ||
10162 | ui_out_field_int (uiout, "line", sal.line); | |
10163 | ui_out_text (uiout, "\n"); | |
10164 | ||
10165 | b->line_number = sal.line; | |
10166 | ||
10167 | xfree (b->source_file); | |
10168 | if (sym) | |
10169 | b->source_file = xstrdup (sal.symtab->filename); | |
10170 | else | |
10171 | b->source_file = NULL; | |
10172 | ||
10173 | xfree (b->addr_string); | |
10174 | b->addr_string = xstrprintf ("%s:%d", | |
10175 | sal.symtab->filename, b->line_number); | |
10176 | ||
10177 | /* Might be nice to check if function changed, and warn if | |
10178 | so. */ | |
10179 | ||
10180 | release_static_tracepoint_marker (marker); | |
10181 | } | |
10182 | } | |
10183 | return sal; | |
10184 | } | |
10185 | ||
fe3f5fa8 | 10186 | static void |
0d381245 VP |
10187 | update_breakpoint_locations (struct breakpoint *b, |
10188 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
10189 | { |
10190 | int i; | |
10191 | char *s; | |
0d381245 VP |
10192 | struct bp_location *existing_locations = b->loc; |
10193 | ||
4a64f543 MS |
10194 | /* If there's no new locations, and all existing locations are |
10195 | pending, don't do anything. This optimizes the common case where | |
10196 | all locations are in the same shared library, that was unloaded. | |
10197 | We'd like to retain the location, so that when the library is | |
10198 | loaded again, we don't loose the enabled/disabled status of the | |
10199 | individual locations. */ | |
0d381245 | 10200 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
10201 | return; |
10202 | ||
fe3f5fa8 VP |
10203 | b->loc = NULL; |
10204 | ||
0d381245 | 10205 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 10206 | { |
0d381245 | 10207 | struct bp_location *new_loc = |
39d61571 | 10208 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 10209 | |
0d381245 VP |
10210 | /* Reparse conditions, they might contain references to the |
10211 | old symtab. */ | |
10212 | if (b->cond_string != NULL) | |
10213 | { | |
10214 | struct gdb_exception e; | |
fe3f5fa8 | 10215 | |
0d381245 VP |
10216 | s = b->cond_string; |
10217 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10218 | { | |
10219 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
10220 | 0); | |
10221 | } | |
10222 | if (e.reason < 0) | |
10223 | { | |
10224 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
10225 | b->number, e.message); | |
10226 | new_loc->enabled = 0; | |
10227 | } | |
10228 | } | |
fe3f5fa8 | 10229 | |
0d381245 VP |
10230 | if (b->source_file != NULL) |
10231 | xfree (b->source_file); | |
10232 | if (sals.sals[i].symtab == NULL) | |
10233 | b->source_file = NULL; | |
10234 | else | |
1b36a34b | 10235 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 10236 | |
0d381245 VP |
10237 | if (b->line_number == 0) |
10238 | b->line_number = sals.sals[i].line; | |
10239 | } | |
fe3f5fa8 | 10240 | |
514f746b AR |
10241 | /* Update locations of permanent breakpoints. */ |
10242 | if (b->enable_state == bp_permanent) | |
10243 | make_breakpoint_permanent (b); | |
10244 | ||
4a64f543 MS |
10245 | /* If possible, carry over 'disable' status from existing |
10246 | breakpoints. */ | |
0d381245 VP |
10247 | { |
10248 | struct bp_location *e = existing_locations; | |
776592bf DE |
10249 | /* If there are multiple breakpoints with the same function name, |
10250 | e.g. for inline functions, comparing function names won't work. | |
10251 | Instead compare pc addresses; this is just a heuristic as things | |
10252 | may have moved, but in practice it gives the correct answer | |
10253 | often enough until a better solution is found. */ | |
10254 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
10255 | ||
0d381245 VP |
10256 | for (; e; e = e->next) |
10257 | { | |
10258 | if (!e->enabled && e->function_name) | |
10259 | { | |
10260 | struct bp_location *l = b->loc; | |
776592bf DE |
10261 | if (have_ambiguous_names) |
10262 | { | |
10263 | for (; l; l = l->next) | |
6c95b8df PA |
10264 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
10265 | l->pspace->aspace, l->address)) | |
776592bf DE |
10266 | { |
10267 | l->enabled = 0; | |
10268 | break; | |
10269 | } | |
10270 | } | |
10271 | else | |
10272 | { | |
10273 | for (; l; l = l->next) | |
10274 | if (l->function_name | |
10275 | && strcmp (e->function_name, l->function_name) == 0) | |
10276 | { | |
10277 | l->enabled = 0; | |
10278 | break; | |
10279 | } | |
10280 | } | |
0d381245 VP |
10281 | } |
10282 | } | |
10283 | } | |
fe3f5fa8 | 10284 | |
b60e7edf | 10285 | update_global_location_list (1); |
fe3f5fa8 VP |
10286 | } |
10287 | ||
c906108c SS |
10288 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
10289 | The value we return ends up being the return value from catch_errors. | |
10290 | Unused in this case. */ | |
10291 | ||
10292 | static int | |
4efb68b1 | 10293 | breakpoint_re_set_one (void *bint) |
c906108c | 10294 | { |
4a64f543 | 10295 | /* Get past catch_errs. */ |
53a5351d | 10296 | struct breakpoint *b = (struct breakpoint *) bint; |
fe3f5fa8 VP |
10297 | int not_found = 0; |
10298 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
10299 | struct symtabs_and_lines sals = {0}; |
10300 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 10301 | char *s; |
fe3f5fa8 | 10302 | struct gdb_exception e; |
6c95b8df | 10303 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
0fb4aa4b | 10304 | int marker_spec = 0; |
c906108c SS |
10305 | |
10306 | switch (b->type) | |
10307 | { | |
10308 | case bp_none: | |
8a3fe4f8 | 10309 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 10310 | b->number); |
c906108c SS |
10311 | return 0; |
10312 | case bp_breakpoint: | |
10313 | case bp_hardware_breakpoint: | |
1042e4c0 | 10314 | case bp_tracepoint: |
7a697b8d | 10315 | case bp_fast_tracepoint: |
0fb4aa4b | 10316 | case bp_static_tracepoint: |
8bea4e01 UW |
10317 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
10318 | if (b->enable_state == bp_startup_disabled) | |
10319 | return 0; | |
10320 | ||
c906108c SS |
10321 | if (b->addr_string == NULL) |
10322 | { | |
4a64f543 | 10323 | /* Anything without a string can't be re-set. */ |
c906108c SS |
10324 | delete_breakpoint (b); |
10325 | return 0; | |
10326 | } | |
c906108c | 10327 | |
c906108c SS |
10328 | input_radix = b->input_radix; |
10329 | s = b->addr_string; | |
6c95b8df PA |
10330 | |
10331 | save_current_space_and_thread (); | |
10332 | switch_to_program_space_and_thread (b->pspace); | |
10333 | ||
0fb4aa4b PA |
10334 | marker_spec = b->type == bp_static_tracepoint && is_marker_spec (s); |
10335 | ||
385d04dc | 10336 | set_language (b->language); |
fe3f5fa8 | 10337 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 10338 | { |
0fb4aa4b PA |
10339 | if (marker_spec) |
10340 | { | |
10341 | sals = decode_static_tracepoint_spec (&s); | |
10342 | if (sals.nelts > b->static_trace_marker_id_idx) | |
10343 | { | |
10344 | sals.sals[0] = sals.sals[b->static_trace_marker_id_idx]; | |
10345 | sals.nelts = 1; | |
10346 | } | |
10347 | else | |
10348 | error (_("marker %s not found"), b->static_trace_marker_id); | |
10349 | } | |
10350 | else | |
10351 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, | |
10352 | not_found_ptr); | |
fe3f5fa8 VP |
10353 | } |
10354 | if (e.reason < 0) | |
10355 | { | |
10356 | int not_found_and_ok = 0; | |
4a64f543 MS |
10357 | /* For pending breakpoints, it's expected that parsing will |
10358 | fail until the right shared library is loaded. User has | |
10359 | already told to create pending breakpoints and don't need | |
10360 | extra messages. If breakpoint is in bp_shlib_disabled | |
10361 | state, then user already saw the message about that | |
10362 | breakpoint being disabled, and don't want to see more | |
10363 | errors. */ | |
0d381245 VP |
10364 | if (not_found |
10365 | && (b->condition_not_parsed | |
10366 | || (b->loc && b->loc->shlib_disabled) | |
10367 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
10368 | not_found_and_ok = 1; |
10369 | ||
10370 | if (!not_found_and_ok) | |
c906108c | 10371 | { |
fe3f5fa8 VP |
10372 | /* We surely don't want to warn about the same breakpoint |
10373 | 10 times. One solution, implemented here, is disable | |
10374 | the breakpoint on error. Another solution would be to | |
10375 | have separate 'warning emitted' flag. Since this | |
10376 | happens only when a binary has changed, I don't know | |
10377 | which approach is better. */ | |
10378 | b->enable_state = bp_disabled; | |
10379 | throw_exception (e); | |
c906108c | 10380 | } |
fe3f5fa8 | 10381 | } |
c906108c | 10382 | |
6c95b8df | 10383 | if (!not_found) |
fe3f5fa8 | 10384 | { |
6c95b8df PA |
10385 | gdb_assert (sals.nelts == 1); |
10386 | ||
10387 | resolve_sal_pc (&sals.sals[0]); | |
10388 | if (b->condition_not_parsed && s && s[0]) | |
10389 | { | |
10390 | char *cond_string = 0; | |
10391 | int thread = -1; | |
10392 | int task = 0; | |
10393 | ||
10394 | find_condition_and_thread (s, sals.sals[0].pc, | |
10395 | &cond_string, &thread, &task); | |
10396 | if (cond_string) | |
10397 | b->cond_string = cond_string; | |
10398 | b->thread = thread; | |
10399 | b->task = task; | |
10400 | b->condition_not_parsed = 0; | |
10401 | } | |
10402 | ||
0fb4aa4b PA |
10403 | if (b->type == bp_static_tracepoint && !marker_spec) |
10404 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); | |
10405 | ||
6c95b8df | 10406 | expanded = expand_line_sal_maybe (sals.sals[0]); |
fe3f5fa8 | 10407 | } |
6c95b8df PA |
10408 | |
10409 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 10410 | update_breakpoint_locations (b, expanded); |
c906108c SS |
10411 | break; |
10412 | ||
10413 | case bp_watchpoint: | |
10414 | case bp_hardware_watchpoint: | |
10415 | case bp_read_watchpoint: | |
10416 | case bp_access_watchpoint: | |
4a64f543 MS |
10417 | /* Watchpoint can be either on expression using entirely global |
10418 | variables, or it can be on local variables. | |
10419 | ||
10420 | Watchpoints of the first kind are never auto-deleted, and | |
10421 | even persist across program restarts. Since they can use | |
10422 | variables from shared libraries, we need to reparse | |
10423 | expression as libraries are loaded and unloaded. | |
10424 | ||
10425 | Watchpoints on local variables can also change meaning as | |
10426 | result of solib event. For example, if a watchpoint uses | |
10427 | both a local and a global variables in expression, it's a | |
10428 | local watchpoint, but unloading of a shared library will make | |
10429 | the expression invalid. This is not a very common use case, | |
10430 | but we still re-evaluate expression, to avoid surprises to | |
10431 | the user. | |
0b3de036 VP |
10432 | |
10433 | Note that for local watchpoints, we re-evaluate it only if | |
10434 | watchpoints frame id is still valid. If it's not, it means | |
4a64f543 MS |
10435 | the watchpoint is out of scope and will be deleted soon. In |
10436 | fact, I'm not sure we'll ever be called in this case. | |
0b3de036 VP |
10437 | |
10438 | If a local watchpoint's frame id is still valid, then | |
4a64f543 | 10439 | b->exp_valid_block is likewise valid, and we can safely use it. |
0b3de036 VP |
10440 | |
10441 | Don't do anything about disabled watchpoints, since they will | |
10442 | be reevaluated again when enabled. */ | |
a5606eee | 10443 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 10444 | break; |
c5aa993b JM |
10445 | /* We needn't really do anything to reset these, since the mask |
10446 | that requests them is unaffected by e.g., new libraries being | |
4a64f543 | 10447 | loaded. */ |
ce78b96d | 10448 | case bp_catchpoint: |
c906108c | 10449 | break; |
c5aa993b | 10450 | |
c906108c | 10451 | default: |
a3f17187 | 10452 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 10453 | /* fall through */ |
0fd8e87f UW |
10454 | /* Delete overlay event and longjmp master breakpoints; they will be |
10455 | reset later by breakpoint_re_set. */ | |
1900040c | 10456 | case bp_overlay_event: |
0fd8e87f | 10457 | case bp_longjmp_master: |
aa7d318d | 10458 | case bp_std_terminate_master: |
186c406b | 10459 | case bp_exception_master: |
c906108c SS |
10460 | delete_breakpoint (b); |
10461 | break; | |
10462 | ||
c5aa993b JM |
10463 | /* This breakpoint is special, it's set up when the inferior |
10464 | starts and we really don't want to touch it. */ | |
c906108c SS |
10465 | case bp_shlib_event: |
10466 | ||
c4093a6a JM |
10467 | /* Like bp_shlib_event, this breakpoint type is special. |
10468 | Once it is set up, we do not want to touch it. */ | |
10469 | case bp_thread_event: | |
10470 | ||
4a64f543 MS |
10471 | /* Keep temporary breakpoints, which can be encountered when we |
10472 | step over a dlopen call and SOLIB_ADD is resetting the | |
10473 | breakpoints. Otherwise these should have been blown away via | |
10474 | the cleanup chain or by breakpoint_init_inferior when we | |
10475 | rerun the executable. */ | |
c906108c SS |
10476 | case bp_until: |
10477 | case bp_finish: | |
10478 | case bp_watchpoint_scope: | |
10479 | case bp_call_dummy: | |
aa7d318d | 10480 | case bp_std_terminate: |
c906108c | 10481 | case bp_step_resume: |
611c83ae PA |
10482 | case bp_longjmp: |
10483 | case bp_longjmp_resume: | |
186c406b TT |
10484 | case bp_exception: |
10485 | case bp_exception_resume: | |
4efc6507 | 10486 | case bp_jit_event: |
c906108c SS |
10487 | break; |
10488 | } | |
10489 | ||
6c95b8df | 10490 | do_cleanups (cleanups); |
c906108c SS |
10491 | return 0; |
10492 | } | |
10493 | ||
69de3c6a | 10494 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 10495 | void |
69de3c6a | 10496 | breakpoint_re_set (void) |
c906108c | 10497 | { |
35df4500 | 10498 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10499 | enum language save_language; |
10500 | int save_input_radix; | |
6c95b8df | 10501 | struct cleanup *old_chain; |
c5aa993b | 10502 | |
c906108c SS |
10503 | save_language = current_language->la_language; |
10504 | save_input_radix = input_radix; | |
6c95b8df PA |
10505 | old_chain = save_current_program_space (); |
10506 | ||
35df4500 | 10507 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10508 | { |
4a64f543 | 10509 | /* Format possible error msg. */ |
fe3f5fa8 | 10510 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
10511 | b->number); |
10512 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 10513 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 10514 | do_cleanups (cleanups); |
c5aa993b | 10515 | } |
c906108c SS |
10516 | set_language (save_language); |
10517 | input_radix = save_input_radix; | |
e62c965a | 10518 | |
0756c555 | 10519 | jit_breakpoint_re_set (); |
4efc6507 | 10520 | |
6c95b8df PA |
10521 | do_cleanups (old_chain); |
10522 | ||
69de3c6a | 10523 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
10524 | create_longjmp_master_breakpoint ("longjmp"); |
10525 | create_longjmp_master_breakpoint ("_longjmp"); | |
10526 | create_longjmp_master_breakpoint ("siglongjmp"); | |
10527 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 10528 | create_std_terminate_master_breakpoint ("std::terminate()"); |
186c406b | 10529 | create_exception_master_breakpoint (); |
c906108c SS |
10530 | } |
10531 | \f | |
c906108c SS |
10532 | /* Reset the thread number of this breakpoint: |
10533 | ||
10534 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 10535 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 10536 | void |
fba45db2 | 10537 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
10538 | { |
10539 | if (b->thread != -1) | |
10540 | { | |
39f77062 KB |
10541 | if (in_thread_list (inferior_ptid)) |
10542 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
10543 | |
10544 | /* We're being called after following a fork. The new fork is | |
10545 | selected as current, and unless this was a vfork will have a | |
10546 | different program space from the original thread. Reset that | |
10547 | as well. */ | |
10548 | b->loc->pspace = current_program_space; | |
c906108c SS |
10549 | } |
10550 | } | |
10551 | ||
03ac34d5 MS |
10552 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10553 | If from_tty is nonzero, it prints a message to that effect, | |
10554 | which ends with a period (no newline). */ | |
10555 | ||
c906108c | 10556 | void |
fba45db2 | 10557 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 10558 | { |
52f0bd74 | 10559 | struct breakpoint *b; |
c906108c SS |
10560 | |
10561 | if (count < 0) | |
10562 | count = 0; | |
10563 | ||
10564 | ALL_BREAKPOINTS (b) | |
10565 | if (b->number == bptnum) | |
c5aa993b | 10566 | { |
d77f58be SS |
10567 | if (is_tracepoint (b)) |
10568 | { | |
10569 | if (from_tty && count != 0) | |
10570 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
10571 | bptnum); | |
10572 | return; | |
10573 | } | |
10574 | ||
c5aa993b | 10575 | b->ignore_count = count; |
221ea385 KS |
10576 | if (from_tty) |
10577 | { | |
10578 | if (count == 0) | |
a3f17187 | 10579 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
10580 | bptnum); |
10581 | else if (count == 1) | |
a3f17187 | 10582 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
10583 | bptnum); |
10584 | else | |
a3f17187 | 10585 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
10586 | count, bptnum); |
10587 | } | |
c5aa993b | 10588 | breakpoints_changed (); |
383f836e | 10589 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
10590 | return; |
10591 | } | |
c906108c | 10592 | |
8a3fe4f8 | 10593 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
10594 | } |
10595 | ||
b2175913 MS |
10596 | void |
10597 | make_breakpoint_silent (struct breakpoint *b) | |
10598 | { | |
10599 | /* Silence the breakpoint. */ | |
10600 | b->silent = 1; | |
10601 | } | |
10602 | ||
c906108c SS |
10603 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
10604 | ||
10605 | static void | |
fba45db2 | 10606 | ignore_command (char *args, int from_tty) |
c906108c SS |
10607 | { |
10608 | char *p = args; | |
52f0bd74 | 10609 | int num; |
c906108c SS |
10610 | |
10611 | if (p == 0) | |
e2e0b3e5 | 10612 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 10613 | |
c906108c | 10614 | num = get_number (&p); |
5c44784c | 10615 | if (num == 0) |
8a3fe4f8 | 10616 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 10617 | if (*p == 0) |
8a3fe4f8 | 10618 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
10619 | |
10620 | set_ignore_count (num, | |
10621 | longest_to_int (value_as_long (parse_and_eval (p))), | |
10622 | from_tty); | |
221ea385 KS |
10623 | if (from_tty) |
10624 | printf_filtered ("\n"); | |
c906108c SS |
10625 | } |
10626 | \f | |
10627 | /* Call FUNCTION on each of the breakpoints | |
10628 | whose numbers are given in ARGS. */ | |
10629 | ||
10630 | static void | |
95a42b64 TT |
10631 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
10632 | void *), | |
10633 | void *data) | |
c906108c | 10634 | { |
52f0bd74 | 10635 | char *p = args; |
c906108c | 10636 | char *p1; |
52f0bd74 AC |
10637 | int num; |
10638 | struct breakpoint *b, *tmp; | |
11cf8741 | 10639 | int match; |
c906108c SS |
10640 | |
10641 | if (p == 0) | |
e2e0b3e5 | 10642 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
10643 | |
10644 | while (*p) | |
10645 | { | |
11cf8741 | 10646 | match = 0; |
c906108c | 10647 | p1 = p; |
c5aa993b | 10648 | |
5c44784c JM |
10649 | num = get_number_or_range (&p1); |
10650 | if (num == 0) | |
c5aa993b | 10651 | { |
8a3fe4f8 | 10652 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
10653 | } |
10654 | else | |
10655 | { | |
10656 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
10657 | if (b->number == num) | |
10658 | { | |
10659 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 10660 | match = 1; |
95a42b64 | 10661 | function (b, data); |
5c44784c | 10662 | if (related_breakpoint) |
95a42b64 | 10663 | function (related_breakpoint, data); |
11cf8741 | 10664 | break; |
5c44784c | 10665 | } |
11cf8741 | 10666 | if (match == 0) |
a3f17187 | 10667 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 10668 | } |
c906108c SS |
10669 | p = p1; |
10670 | } | |
10671 | } | |
10672 | ||
0d381245 VP |
10673 | static struct bp_location * |
10674 | find_location_by_number (char *number) | |
10675 | { | |
10676 | char *dot = strchr (number, '.'); | |
10677 | char *p1; | |
10678 | int bp_num; | |
10679 | int loc_num; | |
10680 | struct breakpoint *b; | |
10681 | struct bp_location *loc; | |
10682 | ||
10683 | *dot = '\0'; | |
10684 | ||
10685 | p1 = number; | |
10686 | bp_num = get_number_or_range (&p1); | |
10687 | if (bp_num == 0) | |
10688 | error (_("Bad breakpoint number '%s'"), number); | |
10689 | ||
10690 | ALL_BREAKPOINTS (b) | |
10691 | if (b->number == bp_num) | |
10692 | { | |
10693 | break; | |
10694 | } | |
10695 | ||
10696 | if (!b || b->number != bp_num) | |
10697 | error (_("Bad breakpoint number '%s'"), number); | |
10698 | ||
10699 | p1 = dot+1; | |
10700 | loc_num = get_number_or_range (&p1); | |
10701 | if (loc_num == 0) | |
10702 | error (_("Bad breakpoint location number '%s'"), number); | |
10703 | ||
10704 | --loc_num; | |
10705 | loc = b->loc; | |
10706 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
10707 | ; | |
10708 | if (!loc) | |
10709 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
10710 | ||
10711 | return loc; | |
10712 | } | |
10713 | ||
10714 | ||
1900040c MS |
10715 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
10716 | If from_tty is nonzero, it prints a message to that effect, | |
10717 | which ends with a period (no newline). */ | |
10718 | ||
c906108c | 10719 | void |
fba45db2 | 10720 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10721 | { |
10722 | /* Never disable a watchpoint scope breakpoint; we want to | |
10723 | hit them when we leave scope so we can delete both the | |
10724 | watchpoint and its scope breakpoint at that time. */ | |
10725 | if (bpt->type == bp_watchpoint_scope) | |
10726 | return; | |
10727 | ||
c2c6d25f | 10728 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 10729 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
10730 | return; |
10731 | ||
b5de0fa7 | 10732 | bpt->enable_state = bp_disabled; |
c906108c | 10733 | |
b60e7edf | 10734 | update_global_location_list (0); |
c906108c | 10735 | |
383f836e | 10736 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10737 | } |
10738 | ||
95a42b64 TT |
10739 | /* A callback for map_breakpoint_numbers that calls |
10740 | disable_breakpoint. */ | |
10741 | ||
10742 | static void | |
10743 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
10744 | { | |
10745 | disable_breakpoint (b); | |
10746 | } | |
10747 | ||
c906108c | 10748 | static void |
fba45db2 | 10749 | disable_command (char *args, int from_tty) |
c906108c | 10750 | { |
52f0bd74 | 10751 | struct breakpoint *bpt; |
cc59ec59 | 10752 | |
c906108c SS |
10753 | if (args == 0) |
10754 | ALL_BREAKPOINTS (bpt) | |
10755 | switch (bpt->type) | |
c5aa993b JM |
10756 | { |
10757 | case bp_none: | |
8a3fe4f8 | 10758 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 10759 | bpt->number); |
c5aa993b JM |
10760 | continue; |
10761 | case bp_breakpoint: | |
1042e4c0 | 10762 | case bp_tracepoint: |
7a697b8d | 10763 | case bp_fast_tracepoint: |
0fb4aa4b | 10764 | case bp_static_tracepoint: |
ce78b96d | 10765 | case bp_catchpoint: |
c5aa993b JM |
10766 | case bp_hardware_breakpoint: |
10767 | case bp_watchpoint: | |
10768 | case bp_hardware_watchpoint: | |
10769 | case bp_read_watchpoint: | |
10770 | case bp_access_watchpoint: | |
10771 | disable_breakpoint (bpt); | |
10772 | default: | |
10773 | continue; | |
10774 | } | |
0d381245 VP |
10775 | else if (strchr (args, '.')) |
10776 | { | |
10777 | struct bp_location *loc = find_location_by_number (args); | |
10778 | if (loc) | |
10779 | loc->enabled = 0; | |
b60e7edf | 10780 | update_global_location_list (0); |
0d381245 | 10781 | } |
c906108c | 10782 | else |
95a42b64 | 10783 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
10784 | } |
10785 | ||
10786 | static void | |
fba45db2 | 10787 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 10788 | { |
afe38095 | 10789 | int target_resources_ok; |
c906108c SS |
10790 | |
10791 | if (bpt->type == bp_hardware_breakpoint) | |
10792 | { | |
10793 | int i; | |
c5aa993b | 10794 | i = hw_breakpoint_used_count (); |
53a5351d | 10795 | target_resources_ok = |
d92524f1 | 10796 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 10797 | i + 1, 0); |
c906108c | 10798 | if (target_resources_ok == 0) |
8a3fe4f8 | 10799 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 10800 | else if (target_resources_ok < 0) |
8a3fe4f8 | 10801 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
10802 | } |
10803 | ||
cc60f2e3 | 10804 | if (is_watchpoint (bpt)) |
c906108c | 10805 | { |
dde02812 ES |
10806 | struct gdb_exception e; |
10807 | ||
10808 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 10809 | { |
dde02812 | 10810 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 10811 | } |
dde02812 | 10812 | if (e.reason < 0) |
c5aa993b | 10813 | { |
dde02812 ES |
10814 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
10815 | bpt->number); | |
10816 | return; | |
c5aa993b | 10817 | } |
c906108c | 10818 | } |
0101ce28 | 10819 | |
b4c291bb KH |
10820 | if (bpt->enable_state != bp_permanent) |
10821 | bpt->enable_state = bp_enabled; | |
10822 | bpt->disposition = disposition; | |
b60e7edf | 10823 | update_global_location_list (1); |
b4c291bb KH |
10824 | breakpoints_changed (); |
10825 | ||
383f836e | 10826 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
10827 | } |
10828 | ||
fe3f5fa8 | 10829 | |
c906108c | 10830 | void |
fba45db2 | 10831 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
10832 | { |
10833 | do_enable_breakpoint (bpt, bpt->disposition); | |
10834 | } | |
10835 | ||
95a42b64 TT |
10836 | /* A callback for map_breakpoint_numbers that calls |
10837 | enable_breakpoint. */ | |
10838 | ||
10839 | static void | |
10840 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
10841 | { | |
10842 | enable_breakpoint (b); | |
10843 | } | |
10844 | ||
c906108c SS |
10845 | /* The enable command enables the specified breakpoints (or all defined |
10846 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 10847 | in stopping the inferior. */ |
c906108c | 10848 | |
c906108c | 10849 | static void |
fba45db2 | 10850 | enable_command (char *args, int from_tty) |
c906108c | 10851 | { |
52f0bd74 | 10852 | struct breakpoint *bpt; |
cc59ec59 | 10853 | |
c906108c SS |
10854 | if (args == 0) |
10855 | ALL_BREAKPOINTS (bpt) | |
10856 | switch (bpt->type) | |
c5aa993b JM |
10857 | { |
10858 | case bp_none: | |
8a3fe4f8 | 10859 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10860 | bpt->number); |
c5aa993b JM |
10861 | continue; |
10862 | case bp_breakpoint: | |
1042e4c0 | 10863 | case bp_tracepoint: |
7a697b8d | 10864 | case bp_fast_tracepoint: |
0fb4aa4b | 10865 | case bp_static_tracepoint: |
ce78b96d | 10866 | case bp_catchpoint: |
c5aa993b JM |
10867 | case bp_hardware_breakpoint: |
10868 | case bp_watchpoint: | |
10869 | case bp_hardware_watchpoint: | |
10870 | case bp_read_watchpoint: | |
10871 | case bp_access_watchpoint: | |
10872 | enable_breakpoint (bpt); | |
10873 | default: | |
10874 | continue; | |
10875 | } | |
0d381245 VP |
10876 | else if (strchr (args, '.')) |
10877 | { | |
10878 | struct bp_location *loc = find_location_by_number (args); | |
10879 | if (loc) | |
10880 | loc->enabled = 1; | |
b60e7edf | 10881 | update_global_location_list (1); |
0d381245 | 10882 | } |
c906108c | 10883 | else |
95a42b64 | 10884 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10885 | } |
10886 | ||
10887 | static void | |
95a42b64 | 10888 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10889 | { |
b5de0fa7 | 10890 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10891 | } |
10892 | ||
c906108c | 10893 | static void |
fba45db2 | 10894 | enable_once_command (char *args, int from_tty) |
c906108c | 10895 | { |
95a42b64 | 10896 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10897 | } |
10898 | ||
10899 | static void | |
95a42b64 | 10900 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10901 | { |
b5de0fa7 | 10902 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10903 | } |
10904 | ||
c906108c | 10905 | static void |
fba45db2 | 10906 | enable_delete_command (char *args, int from_tty) |
c906108c | 10907 | { |
95a42b64 | 10908 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10909 | } |
10910 | \f | |
fa8d40ab JJ |
10911 | static void |
10912 | set_breakpoint_cmd (char *args, int from_tty) | |
10913 | { | |
10914 | } | |
10915 | ||
10916 | static void | |
10917 | show_breakpoint_cmd (char *args, int from_tty) | |
10918 | { | |
10919 | } | |
10920 | ||
1f3b5d1b PP |
10921 | /* Invalidate last known value of any hardware watchpoint if |
10922 | the memory which that value represents has been written to by | |
10923 | GDB itself. */ | |
10924 | ||
10925 | static void | |
10926 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10927 | const bfd_byte *data) | |
10928 | { | |
10929 | struct breakpoint *bp; | |
10930 | ||
10931 | ALL_BREAKPOINTS (bp) | |
10932 | if (bp->enable_state == bp_enabled | |
10933 | && bp->type == bp_hardware_watchpoint | |
10934 | && bp->val_valid && bp->val) | |
10935 | { | |
10936 | struct bp_location *loc; | |
10937 | ||
10938 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10939 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10940 | && loc->address + loc->length > addr | |
10941 | && addr + len > loc->address) | |
10942 | { | |
10943 | value_free (bp->val); | |
10944 | bp->val = NULL; | |
10945 | bp->val_valid = 0; | |
10946 | } | |
10947 | } | |
10948 | } | |
10949 | ||
c906108c SS |
10950 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10951 | ||
10952 | struct symtabs_and_lines | |
fba45db2 | 10953 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10954 | { |
10955 | struct symtabs_and_lines sals; | |
cc59ec59 | 10956 | |
c906108c | 10957 | if (string == 0) |
8a3fe4f8 | 10958 | error (_("Empty line specification.")); |
c906108c SS |
10959 | if (default_breakpoint_valid) |
10960 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10961 | default_breakpoint_symtab, |
10962 | default_breakpoint_line, | |
68219205 | 10963 | (char ***) NULL, NULL); |
c906108c SS |
10964 | else |
10965 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10966 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10967 | if (*string) |
8a3fe4f8 | 10968 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10969 | return sals; |
10970 | } | |
8181d85f DJ |
10971 | |
10972 | /* Create and insert a raw software breakpoint at PC. Return an | |
10973 | identifier, which should be used to remove the breakpoint later. | |
10974 | In general, places which call this should be using something on the | |
10975 | breakpoint chain instead; this function should be eliminated | |
10976 | someday. */ | |
10977 | ||
10978 | void * | |
6c95b8df PA |
10979 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10980 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10981 | { |
10982 | struct bp_target_info *bp_tgt; | |
10983 | ||
6c95b8df | 10984 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10985 | |
6c95b8df | 10986 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10987 | bp_tgt->placed_address = pc; |
6c95b8df | 10988 | |
a6d9a66e | 10989 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10990 | { |
10991 | /* Could not insert the breakpoint. */ | |
10992 | xfree (bp_tgt); | |
10993 | return NULL; | |
10994 | } | |
10995 | ||
10996 | return bp_tgt; | |
10997 | } | |
10998 | ||
4a64f543 MS |
10999 | /* Remove a breakpoint BP inserted by |
11000 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
11001 | |
11002 | int | |
a6d9a66e | 11003 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
11004 | { |
11005 | struct bp_target_info *bp_tgt = bp; | |
11006 | int ret; | |
11007 | ||
a6d9a66e | 11008 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
11009 | xfree (bp_tgt); |
11010 | ||
11011 | return ret; | |
11012 | } | |
11013 | ||
4a64f543 MS |
11014 | /* One (or perhaps two) breakpoints used for software single |
11015 | stepping. */ | |
8181d85f DJ |
11016 | |
11017 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 11018 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
11019 | |
11020 | /* Create and insert a breakpoint for software single step. */ | |
11021 | ||
11022 | void | |
6c95b8df | 11023 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
11024 | struct address_space *aspace, |
11025 | CORE_ADDR next_pc) | |
8181d85f DJ |
11026 | { |
11027 | void **bpt_p; | |
11028 | ||
11029 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
11030 | { |
11031 | bpt_p = &single_step_breakpoints[0]; | |
11032 | single_step_gdbarch[0] = gdbarch; | |
11033 | } | |
8181d85f DJ |
11034 | else |
11035 | { | |
11036 | gdb_assert (single_step_breakpoints[1] == NULL); | |
11037 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 11038 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
11039 | } |
11040 | ||
4a64f543 MS |
11041 | /* NOTE drow/2006-04-11: A future improvement to this function would |
11042 | be to only create the breakpoints once, and actually put them on | |
11043 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
11044 | We could adjust the addresses each time they were needed. Doing | |
11045 | this requires corresponding changes elsewhere where single step | |
11046 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 11047 | |
6c95b8df | 11048 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 11049 | if (*bpt_p == NULL) |
5af949e3 UW |
11050 | error (_("Could not insert single-step breakpoint at %s"), |
11051 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
11052 | } |
11053 | ||
f02253f1 HZ |
11054 | /* Check if the breakpoints used for software single stepping |
11055 | were inserted or not. */ | |
11056 | ||
11057 | int | |
11058 | single_step_breakpoints_inserted (void) | |
11059 | { | |
11060 | return (single_step_breakpoints[0] != NULL | |
11061 | || single_step_breakpoints[1] != NULL); | |
11062 | } | |
11063 | ||
8181d85f DJ |
11064 | /* Remove and delete any breakpoints used for software single step. */ |
11065 | ||
11066 | void | |
11067 | remove_single_step_breakpoints (void) | |
11068 | { | |
11069 | gdb_assert (single_step_breakpoints[0] != NULL); | |
11070 | ||
11071 | /* See insert_single_step_breakpoint for more about this deprecated | |
11072 | call. */ | |
a6d9a66e UW |
11073 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
11074 | single_step_breakpoints[0]); | |
11075 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
11076 | single_step_breakpoints[0] = NULL; |
11077 | ||
11078 | if (single_step_breakpoints[1] != NULL) | |
11079 | { | |
a6d9a66e UW |
11080 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
11081 | single_step_breakpoints[1]); | |
11082 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
11083 | single_step_breakpoints[1] = NULL; |
11084 | } | |
11085 | } | |
11086 | ||
d03285ec UW |
11087 | /* Delete software single step breakpoints without removing them from |
11088 | the inferior. This is intended to be used if the inferior's address | |
11089 | space where they were inserted is already gone, e.g. after exit or | |
11090 | exec. */ | |
11091 | ||
11092 | void | |
11093 | cancel_single_step_breakpoints (void) | |
11094 | { | |
11095 | int i; | |
11096 | ||
11097 | for (i = 0; i < 2; i++) | |
11098 | if (single_step_breakpoints[i]) | |
11099 | { | |
11100 | xfree (single_step_breakpoints[i]); | |
11101 | single_step_breakpoints[i] = NULL; | |
11102 | single_step_gdbarch[i] = NULL; | |
11103 | } | |
11104 | } | |
11105 | ||
11106 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
11107 | removing them. */ | |
11108 | ||
11109 | static void | |
11110 | detach_single_step_breakpoints (void) | |
11111 | { | |
11112 | int i; | |
11113 | ||
11114 | for (i = 0; i < 2; i++) | |
11115 | if (single_step_breakpoints[i]) | |
11116 | target_remove_breakpoint (single_step_gdbarch[i], | |
11117 | single_step_breakpoints[i]); | |
11118 | } | |
11119 | ||
4a64f543 MS |
11120 | /* Check whether a software single-step breakpoint is inserted at |
11121 | PC. */ | |
1aafd4da UW |
11122 | |
11123 | static int | |
cc59ec59 MS |
11124 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
11125 | CORE_ADDR pc) | |
1aafd4da UW |
11126 | { |
11127 | int i; | |
11128 | ||
11129 | for (i = 0; i < 2; i++) | |
11130 | { | |
11131 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
11132 | if (bp_tgt |
11133 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
11134 | bp_tgt->placed_address, | |
11135 | aspace, pc)) | |
1aafd4da UW |
11136 | return 1; |
11137 | } | |
11138 | ||
11139 | return 0; | |
11140 | } | |
11141 | ||
a96d9b2e SDJ |
11142 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
11143 | non-zero otherwise. */ | |
11144 | static int | |
11145 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
11146 | { | |
11147 | if (syscall_catchpoint_p (bp) | |
11148 | && bp->enable_state != bp_disabled | |
11149 | && bp->enable_state != bp_call_disabled) | |
11150 | return 1; | |
11151 | else | |
11152 | return 0; | |
11153 | } | |
11154 | ||
11155 | int | |
11156 | catch_syscall_enabled (void) | |
11157 | { | |
11158 | struct inferior *inf = current_inferior (); | |
11159 | ||
11160 | return inf->total_syscalls_count != 0; | |
11161 | } | |
11162 | ||
11163 | int | |
11164 | catching_syscall_number (int syscall_number) | |
11165 | { | |
11166 | struct breakpoint *bp; | |
11167 | ||
11168 | ALL_BREAKPOINTS (bp) | |
11169 | if (is_syscall_catchpoint_enabled (bp)) | |
11170 | { | |
11171 | if (bp->syscalls_to_be_caught) | |
11172 | { | |
11173 | int i, iter; | |
11174 | for (i = 0; | |
11175 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
11176 | i++) | |
11177 | if (syscall_number == iter) | |
11178 | return 1; | |
11179 | } | |
11180 | else | |
11181 | return 1; | |
11182 | } | |
11183 | ||
11184 | return 0; | |
11185 | } | |
11186 | ||
11187 | /* Complete syscall names. Used by "catch syscall". */ | |
11188 | static char ** | |
11189 | catch_syscall_completer (struct cmd_list_element *cmd, | |
11190 | char *text, char *word) | |
11191 | { | |
11192 | const char **list = get_syscall_names (); | |
cc59ec59 | 11193 | |
a96d9b2e SDJ |
11194 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); |
11195 | } | |
11196 | ||
1042e4c0 SS |
11197 | /* Tracepoint-specific operations. */ |
11198 | ||
11199 | /* Set tracepoint count to NUM. */ | |
11200 | static void | |
11201 | set_tracepoint_count (int num) | |
11202 | { | |
11203 | tracepoint_count = num; | |
4fa62494 | 11204 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
11205 | } |
11206 | ||
11207 | void | |
11208 | trace_command (char *arg, int from_tty) | |
11209 | { | |
8cdf0e15 VP |
11210 | if (create_breakpoint (get_current_arch (), |
11211 | arg, | |
11212 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11213 | 0 /* tempflag */, |
11214 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11215 | 0 /* Ignore count */, |
11216 | pending_break_support, | |
11217 | NULL, | |
11218 | from_tty, | |
84f4c1fe PM |
11219 | 1 /* enabled */, |
11220 | 0 /* internal */)) | |
fd9b8c24 | 11221 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
11222 | } |
11223 | ||
7a697b8d SS |
11224 | void |
11225 | ftrace_command (char *arg, int from_tty) | |
11226 | { | |
8cdf0e15 VP |
11227 | if (create_breakpoint (get_current_arch (), |
11228 | arg, | |
11229 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
11230 | 0 /* tempflag */, |
11231 | bp_fast_tracepoint /* type_wanted */, | |
11232 | 0 /* Ignore count */, | |
11233 | pending_break_support, | |
11234 | NULL, | |
11235 | from_tty, | |
84f4c1fe PM |
11236 | 1 /* enabled */, |
11237 | 0 /* internal */)) | |
0fb4aa4b PA |
11238 | set_tracepoint_count (breakpoint_count); |
11239 | } | |
11240 | ||
11241 | /* strace command implementation. Creates a static tracepoint. */ | |
11242 | ||
11243 | void | |
11244 | strace_command (char *arg, int from_tty) | |
11245 | { | |
11246 | if (create_breakpoint (get_current_arch (), | |
11247 | arg, | |
11248 | NULL, 0, 1 /* parse arg */, | |
11249 | 0 /* tempflag */, | |
11250 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
11251 | 0 /* Ignore count */, |
11252 | pending_break_support, | |
11253 | NULL, | |
11254 | from_tty, | |
84f4c1fe PM |
11255 | 1 /* enabled */, |
11256 | 0 /* internal */)) | |
fd9b8c24 | 11257 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
11258 | } |
11259 | ||
409873ef SS |
11260 | /* Set up a fake reader function that gets command lines from a linked |
11261 | list that was acquired during tracepoint uploading. */ | |
11262 | ||
11263 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 11264 | static int next_cmd; |
409873ef SS |
11265 | |
11266 | static char * | |
11267 | read_uploaded_action (void) | |
11268 | { | |
11269 | char *rslt; | |
11270 | ||
3149d8c1 | 11271 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 11272 | |
3149d8c1 | 11273 | next_cmd++; |
409873ef SS |
11274 | |
11275 | return rslt; | |
11276 | } | |
11277 | ||
00bf0b85 SS |
11278 | /* Given information about a tracepoint as recorded on a target (which |
11279 | can be either a live system or a trace file), attempt to create an | |
11280 | equivalent GDB tracepoint. This is not a reliable process, since | |
11281 | the target does not necessarily have all the information used when | |
11282 | the tracepoint was originally defined. */ | |
11283 | ||
11284 | struct breakpoint * | |
11285 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 11286 | { |
409873ef | 11287 | char *addr_str, small_buf[100]; |
d5551862 | 11288 | struct breakpoint *tp; |
fd9b8c24 | 11289 | |
409873ef SS |
11290 | if (utp->at_string) |
11291 | addr_str = utp->at_string; | |
11292 | else | |
11293 | { | |
11294 | /* In the absence of a source location, fall back to raw | |
11295 | address. Since there is no way to confirm that the address | |
11296 | means the same thing as when the trace was started, warn the | |
11297 | user. */ | |
11298 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
11299 | utp->number); | |
11300 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
11301 | addr_str = small_buf; | |
11302 | } | |
11303 | ||
11304 | /* There's not much we can do with a sequence of bytecodes. */ | |
11305 | if (utp->cond && !utp->cond_string) | |
11306 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
11307 | utp->number); | |
d5551862 | 11308 | |
8cdf0e15 | 11309 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
11310 | addr_str, |
11311 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 11312 | 0 /* tempflag */, |
0fb4aa4b | 11313 | utp->type /* type_wanted */, |
8cdf0e15 VP |
11314 | 0 /* Ignore count */, |
11315 | pending_break_support, | |
11316 | NULL, | |
11317 | 0 /* from_tty */, | |
84f4c1fe PM |
11318 | utp->enabled /* enabled */, |
11319 | 0 /* internal */)) | |
fd9b8c24 PA |
11320 | return NULL; |
11321 | ||
00bf0b85 SS |
11322 | set_tracepoint_count (breakpoint_count); |
11323 | ||
409873ef | 11324 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
11325 | tp = get_tracepoint (tracepoint_count); |
11326 | gdb_assert (tp != NULL); | |
d5551862 | 11327 | |
00bf0b85 SS |
11328 | if (utp->pass > 0) |
11329 | { | |
409873ef | 11330 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 11331 | |
409873ef | 11332 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
11333 | } |
11334 | ||
409873ef SS |
11335 | /* If we have uploaded versions of the original commands, set up a |
11336 | special-purpose "reader" function and call the usual command line | |
11337 | reader, then pass the result to the breakpoint command-setting | |
11338 | function. */ | |
3149d8c1 | 11339 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 11340 | { |
409873ef | 11341 | struct command_line *cmd_list; |
00bf0b85 | 11342 | |
409873ef | 11343 | this_utp = utp; |
3149d8c1 | 11344 | next_cmd = 0; |
d5551862 | 11345 | |
409873ef SS |
11346 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
11347 | ||
11348 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 11349 | } |
3149d8c1 SS |
11350 | else if (!VEC_empty (char_ptr, utp->actions) |
11351 | || !VEC_empty (char_ptr, utp->step_actions)) | |
409873ef SS |
11352 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), |
11353 | utp->number); | |
00bf0b85 SS |
11354 | |
11355 | return tp; | |
11356 | } | |
11357 | ||
1042e4c0 SS |
11358 | /* Print information on tracepoint number TPNUM_EXP, or all if |
11359 | omitted. */ | |
11360 | ||
11361 | static void | |
11362 | tracepoints_info (char *tpnum_exp, int from_tty) | |
11363 | { | |
d77f58be SS |
11364 | int tpnum = -1, num_printed; |
11365 | ||
11366 | if (tpnum_exp) | |
11367 | tpnum = parse_and_eval_long (tpnum_exp); | |
1042e4c0 | 11368 | |
d77f58be SS |
11369 | num_printed = breakpoint_1 (tpnum, 0, is_tracepoint); |
11370 | ||
11371 | if (num_printed == 0) | |
1042e4c0 | 11372 | { |
d77f58be SS |
11373 | if (tpnum == -1) |
11374 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
11375 | else | |
11376 | ui_out_message (uiout, 0, "No tracepoint number %d.\n", tpnum); | |
1042e4c0 | 11377 | } |
ad443146 SS |
11378 | |
11379 | default_collect_info (); | |
1042e4c0 SS |
11380 | } |
11381 | ||
4a64f543 | 11382 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
11383 | Not supported by all targets. */ |
11384 | static void | |
11385 | enable_trace_command (char *args, int from_tty) | |
11386 | { | |
11387 | enable_command (args, from_tty); | |
11388 | } | |
11389 | ||
4a64f543 | 11390 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
11391 | Not supported by all targets. */ |
11392 | static void | |
11393 | disable_trace_command (char *args, int from_tty) | |
11394 | { | |
11395 | disable_command (args, from_tty); | |
11396 | } | |
11397 | ||
4a64f543 | 11398 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
11399 | static void |
11400 | delete_trace_command (char *arg, int from_tty) | |
11401 | { | |
35df4500 | 11402 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
11403 | |
11404 | dont_repeat (); | |
11405 | ||
11406 | if (arg == 0) | |
11407 | { | |
11408 | int breaks_to_delete = 0; | |
11409 | ||
11410 | /* Delete all breakpoints if no argument. | |
11411 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
11412 | have to be deleted with an explicit breakpoint number |
11413 | argument. */ | |
1042e4c0 SS |
11414 | ALL_TRACEPOINTS (b) |
11415 | { | |
11416 | if (b->number >= 0) | |
11417 | { | |
11418 | breaks_to_delete = 1; | |
11419 | break; | |
11420 | } | |
11421 | } | |
11422 | ||
11423 | /* Ask user only if there are some breakpoints to delete. */ | |
11424 | if (!from_tty | |
11425 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
11426 | { | |
35df4500 | 11427 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
1042e4c0 | 11428 | { |
d77f58be | 11429 | if (is_tracepoint (b) |
059fb39f | 11430 | && b->number >= 0) |
1042e4c0 SS |
11431 | delete_breakpoint (b); |
11432 | } | |
11433 | } | |
11434 | } | |
11435 | else | |
95a42b64 | 11436 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
11437 | } |
11438 | ||
11439 | /* Set passcount for tracepoint. | |
11440 | ||
11441 | First command argument is passcount, second is tracepoint number. | |
11442 | If tracepoint number omitted, apply to most recently defined. | |
11443 | Also accepts special argument "all". */ | |
11444 | ||
11445 | static void | |
11446 | trace_pass_command (char *args, int from_tty) | |
11447 | { | |
11448 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
11449 | unsigned int count; | |
11450 | int all = 0; | |
11451 | ||
11452 | if (args == 0 || *args == 0) | |
11453 | error (_("passcount command requires an argument (count + optional TP num)")); | |
11454 | ||
4a64f543 | 11455 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
11456 | |
11457 | while (*args && isspace ((int) *args)) | |
11458 | args++; | |
11459 | ||
11460 | if (*args && strncasecmp (args, "all", 3) == 0) | |
11461 | { | |
11462 | args += 3; /* Skip special argument "all". */ | |
11463 | all = 1; | |
11464 | if (*args) | |
11465 | error (_("Junk at end of arguments.")); | |
11466 | } | |
11467 | else | |
11468 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
11469 | ||
11470 | do | |
11471 | { | |
11472 | if (t1) | |
11473 | { | |
11474 | ALL_TRACEPOINTS (t2) | |
11475 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
11476 | { | |
11477 | t2->pass_count = count; | |
11478 | observer_notify_tracepoint_modified (t2->number); | |
11479 | if (from_tty) | |
11480 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
11481 | t2->number, count); | |
11482 | } | |
11483 | if (! all && *args) | |
11484 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
11485 | } | |
11486 | } | |
11487 | while (*args); | |
11488 | } | |
11489 | ||
11490 | struct breakpoint * | |
11491 | get_tracepoint (int num) | |
11492 | { | |
11493 | struct breakpoint *t; | |
11494 | ||
11495 | ALL_TRACEPOINTS (t) | |
11496 | if (t->number == num) | |
11497 | return t; | |
11498 | ||
11499 | return NULL; | |
11500 | } | |
11501 | ||
d5551862 SS |
11502 | /* Find the tracepoint with the given target-side number (which may be |
11503 | different from the tracepoint number after disconnecting and | |
11504 | reconnecting). */ | |
11505 | ||
11506 | struct breakpoint * | |
11507 | get_tracepoint_by_number_on_target (int num) | |
11508 | { | |
11509 | struct breakpoint *t; | |
11510 | ||
11511 | ALL_TRACEPOINTS (t) | |
11512 | if (t->number_on_target == num) | |
11513 | return t; | |
11514 | ||
11515 | return NULL; | |
11516 | } | |
11517 | ||
1042e4c0 SS |
11518 | /* Utility: parse a tracepoint number and look it up in the list. |
11519 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
11520 | if OPTIONAL_P is true, then if the argument is missing, the most | |
11521 | recent tracepoint (tracepoint_count) is returned. */ | |
11522 | struct breakpoint * | |
11523 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
11524 | { | |
11525 | extern int tracepoint_count; | |
11526 | struct breakpoint *t; | |
11527 | int tpnum; | |
11528 | char *instring = arg == NULL ? NULL : *arg; | |
11529 | ||
11530 | if (arg == NULL || *arg == NULL || ! **arg) | |
11531 | { | |
11532 | if (optional_p) | |
11533 | tpnum = tracepoint_count; | |
11534 | else | |
11535 | error_no_arg (_("tracepoint number")); | |
11536 | } | |
11537 | else | |
11538 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
11539 | ||
11540 | if (tpnum <= 0) | |
11541 | { | |
11542 | if (instring && *instring) | |
11543 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
11544 | instring); | |
11545 | else | |
11546 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
11547 | return NULL; | |
11548 | } | |
11549 | ||
11550 | ALL_TRACEPOINTS (t) | |
11551 | if (t->number == tpnum) | |
11552 | { | |
11553 | return t; | |
11554 | } | |
11555 | ||
11556 | /* FIXME: if we are in the middle of a range we don't want to give | |
11557 | a message. The current interface to get_number_or_range doesn't | |
11558 | allow us to discover this. */ | |
11559 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
11560 | return NULL; | |
11561 | } | |
11562 | ||
6149aea9 PA |
11563 | /* Save information on user settable breakpoints (watchpoints, etc) to |
11564 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
11565 | on each breakpoint and only include the ones for which it returns | |
11566 | non-zero. */ | |
11567 | ||
1042e4c0 | 11568 | static void |
6149aea9 PA |
11569 | save_breakpoints (char *filename, int from_tty, |
11570 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
11571 | { |
11572 | struct breakpoint *tp; | |
6149aea9 | 11573 | int any = 0; |
a7bdde9e | 11574 | char *pathname; |
1042e4c0 | 11575 | struct cleanup *cleanup; |
a7bdde9e | 11576 | struct ui_file *fp; |
6149aea9 | 11577 | int extra_trace_bits = 0; |
1042e4c0 | 11578 | |
6149aea9 PA |
11579 | if (filename == 0 || *filename == 0) |
11580 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
11581 | |
11582 | /* See if we have anything to save. */ | |
6149aea9 | 11583 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11584 | { |
6149aea9 | 11585 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11586 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 PA |
11587 | continue; |
11588 | ||
11589 | /* If we have a filter, only save the breakpoints it accepts. */ | |
11590 | if (filter && !filter (tp)) | |
11591 | continue; | |
11592 | ||
11593 | any = 1; | |
11594 | ||
11595 | if (is_tracepoint (tp)) | |
11596 | { | |
11597 | extra_trace_bits = 1; | |
11598 | ||
11599 | /* We can stop searching. */ | |
11600 | break; | |
11601 | } | |
1042e4c0 | 11602 | } |
6149aea9 PA |
11603 | |
11604 | if (!any) | |
1042e4c0 | 11605 | { |
6149aea9 | 11606 | warning (_("Nothing to save.")); |
1042e4c0 SS |
11607 | return; |
11608 | } | |
11609 | ||
6149aea9 | 11610 | pathname = tilde_expand (filename); |
1042e4c0 | 11611 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 11612 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 11613 | if (!fp) |
6149aea9 PA |
11614 | error (_("Unable to open file '%s' for saving (%s)"), |
11615 | filename, safe_strerror (errno)); | |
a7bdde9e | 11616 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 11617 | |
6149aea9 PA |
11618 | if (extra_trace_bits) |
11619 | save_trace_state_variables (fp); | |
8bf6485c | 11620 | |
6149aea9 | 11621 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 11622 | { |
6149aea9 | 11623 | /* Skip internal and momentary breakpoints. */ |
84f4c1fe | 11624 | if (!user_settable_breakpoint (tp) || tp->number < 0) |
6149aea9 | 11625 | continue; |
8bf6485c | 11626 | |
6149aea9 PA |
11627 | /* If we have a filter, only save the breakpoints it accepts. */ |
11628 | if (filter && !filter (tp)) | |
11629 | continue; | |
11630 | ||
11631 | if (tp->ops != NULL) | |
11632 | (tp->ops->print_recreate) (tp, fp); | |
1042e4c0 SS |
11633 | else |
11634 | { | |
6149aea9 PA |
11635 | if (tp->type == bp_fast_tracepoint) |
11636 | fprintf_unfiltered (fp, "ftrace"); | |
0fb4aa4b PA |
11637 | if (tp->type == bp_static_tracepoint) |
11638 | fprintf_unfiltered (fp, "strace"); | |
6149aea9 PA |
11639 | else if (tp->type == bp_tracepoint) |
11640 | fprintf_unfiltered (fp, "trace"); | |
11641 | else if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11642 | fprintf_unfiltered (fp, "tbreak"); | |
11643 | else if (tp->type == bp_breakpoint) | |
11644 | fprintf_unfiltered (fp, "break"); | |
11645 | else if (tp->type == bp_hardware_breakpoint | |
11646 | && tp->disposition == disp_del) | |
11647 | fprintf_unfiltered (fp, "thbreak"); | |
11648 | else if (tp->type == bp_hardware_breakpoint) | |
11649 | fprintf_unfiltered (fp, "hbreak"); | |
11650 | else if (tp->type == bp_watchpoint) | |
11651 | fprintf_unfiltered (fp, "watch"); | |
11652 | else if (tp->type == bp_hardware_watchpoint) | |
11653 | fprintf_unfiltered (fp, "watch"); | |
11654 | else if (tp->type == bp_read_watchpoint) | |
11655 | fprintf_unfiltered (fp, "rwatch"); | |
11656 | else if (tp->type == bp_access_watchpoint) | |
11657 | fprintf_unfiltered (fp, "awatch"); | |
11658 | else | |
11659 | internal_error (__FILE__, __LINE__, | |
11660 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11661 | ||
11662 | if (tp->exp_string) | |
11663 | fprintf_unfiltered (fp, " %s", tp->exp_string); | |
11664 | else if (tp->addr_string) | |
11665 | fprintf_unfiltered (fp, " %s", tp->addr_string); | |
11666 | else | |
11667 | { | |
11668 | char tmp[40]; | |
11669 | ||
11670 | sprintf_vma (tmp, tp->loc->address); | |
11671 | fprintf_unfiltered (fp, " *0x%s", tmp); | |
11672 | } | |
1042e4c0 SS |
11673 | } |
11674 | ||
6149aea9 PA |
11675 | if (tp->thread != -1) |
11676 | fprintf_unfiltered (fp, " thread %d", tp->thread); | |
11677 | ||
11678 | if (tp->task != 0) | |
11679 | fprintf_unfiltered (fp, " task %d", tp->task); | |
8bf6485c SS |
11680 | |
11681 | fprintf_unfiltered (fp, "\n"); | |
11682 | ||
6149aea9 PA |
11683 | /* Note, we can't rely on tp->number for anything, as we can't |
11684 | assume the recreated breakpoint numbers will match. Use $bpnum | |
11685 | instead. */ | |
11686 | ||
11687 | if (tp->cond_string) | |
11688 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
11689 | ||
11690 | if (tp->ignore_count) | |
11691 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
11692 | ||
1042e4c0 | 11693 | if (tp->pass_count) |
a7bdde9e | 11694 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 11695 | |
a7bdde9e | 11696 | if (tp->commands) |
1042e4c0 | 11697 | { |
a7bdde9e VP |
11698 | volatile struct gdb_exception ex; |
11699 | ||
6149aea9 | 11700 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e VP |
11701 | |
11702 | ui_out_redirect (uiout, fp); | |
14dba4b4 | 11703 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 11704 | { |
9add0f1b | 11705 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
11706 | } |
11707 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 11708 | |
a7bdde9e VP |
11709 | if (ex.reason < 0) |
11710 | throw_exception (ex); | |
1042e4c0 | 11711 | |
a7bdde9e | 11712 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 11713 | } |
6149aea9 PA |
11714 | |
11715 | if (tp->enable_state == bp_disabled) | |
11716 | fprintf_unfiltered (fp, "disable\n"); | |
11717 | ||
11718 | /* If this is a multi-location breakpoint, check if the locations | |
11719 | should be individually disabled. Watchpoint locations are | |
11720 | special, and not user visible. */ | |
11721 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
11722 | { | |
11723 | struct bp_location *loc; | |
11724 | int n = 1; | |
11725 | ||
11726 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
11727 | if (!loc->enabled) | |
11728 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
11729 | } | |
1042e4c0 | 11730 | } |
8bf6485c | 11731 | |
6149aea9 | 11732 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
11733 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
11734 | ||
1042e4c0 SS |
11735 | do_cleanups (cleanup); |
11736 | if (from_tty) | |
6149aea9 PA |
11737 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
11738 | } | |
11739 | ||
11740 | /* The `save breakpoints' command. */ | |
11741 | ||
11742 | static void | |
11743 | save_breakpoints_command (char *args, int from_tty) | |
11744 | { | |
11745 | save_breakpoints (args, from_tty, NULL); | |
11746 | } | |
11747 | ||
11748 | /* The `save tracepoints' command. */ | |
11749 | ||
11750 | static void | |
11751 | save_tracepoints_command (char *args, int from_tty) | |
11752 | { | |
11753 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
11754 | } |
11755 | ||
11756 | /* Create a vector of all tracepoints. */ | |
11757 | ||
11758 | VEC(breakpoint_p) * | |
11759 | all_tracepoints () | |
11760 | { | |
11761 | VEC(breakpoint_p) *tp_vec = 0; | |
11762 | struct breakpoint *tp; | |
11763 | ||
11764 | ALL_TRACEPOINTS (tp) | |
11765 | { | |
11766 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
11767 | } | |
11768 | ||
11769 | return tp_vec; | |
11770 | } | |
11771 | ||
c906108c | 11772 | \f |
4a64f543 MS |
11773 | /* This help string is used for the break, hbreak, tbreak and thbreak |
11774 | commands. It is defined as a macro to prevent duplication. | |
11775 | COMMAND should be a string constant containing the name of the | |
11776 | command. */ | |
31e2b00f AS |
11777 | #define BREAK_ARGS_HELP(command) \ |
11778 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
11779 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
11780 | If a line number is specified, break at start of code for that line.\n\ | |
11781 | If a function is specified, break at start of code for that function.\n\ | |
11782 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
11783 | With no LOCATION, uses current execution address of the selected\n\ |
11784 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
11785 | \n\ |
11786 | THREADNUM is the number from \"info threads\".\n\ | |
11787 | CONDITION is a boolean expression.\n\ | |
11788 | \n\ | |
d41c0fc8 PA |
11789 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
11790 | conditions are different.\n\ | |
31e2b00f AS |
11791 | \n\ |
11792 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
11793 | ||
44feb3ce TT |
11794 | /* List of subcommands for "catch". */ |
11795 | static struct cmd_list_element *catch_cmdlist; | |
11796 | ||
11797 | /* List of subcommands for "tcatch". */ | |
11798 | static struct cmd_list_element *tcatch_cmdlist; | |
11799 | ||
11800 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
11801 | lists, and pass some additional user data to the command function. */ | |
11802 | static void | |
11803 | add_catch_command (char *name, char *docstring, | |
11804 | void (*sfunc) (char *args, int from_tty, | |
11805 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
11806 | char **(*completer) (struct cmd_list_element *cmd, |
11807 | char *text, char *word), | |
44feb3ce TT |
11808 | void *user_data_catch, |
11809 | void *user_data_tcatch) | |
11810 | { | |
11811 | struct cmd_list_element *command; | |
11812 | ||
11813 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11814 | &catch_cmdlist); | |
11815 | set_cmd_sfunc (command, sfunc); | |
11816 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 11817 | set_cmd_completer (command, completer); |
44feb3ce TT |
11818 | |
11819 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
11820 | &tcatch_cmdlist); | |
11821 | set_cmd_sfunc (command, sfunc); | |
11822 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 11823 | set_cmd_completer (command, completer); |
44feb3ce TT |
11824 | } |
11825 | ||
6c95b8df | 11826 | static void |
a79b8f6e | 11827 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 11828 | { |
6c95b8df PA |
11829 | inf->total_syscalls_count = 0; |
11830 | inf->any_syscall_count = 0; | |
11831 | VEC_free (int, inf->syscalls_counts); | |
11832 | } | |
11833 | ||
6149aea9 PA |
11834 | static void |
11835 | save_command (char *arg, int from_tty) | |
11836 | { | |
11837 | printf_unfiltered (_("\ | |
11838 | \"save\" must be followed by the name of a save subcommand.\n")); | |
11839 | help_list (save_cmdlist, "save ", -1, gdb_stdout); | |
11840 | } | |
11841 | ||
84f4c1fe PM |
11842 | struct breakpoint * |
11843 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
11844 | void *data) | |
11845 | { | |
35df4500 | 11846 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 11847 | |
35df4500 | 11848 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
11849 | { |
11850 | if ((*callback) (b, data)) | |
11851 | return b; | |
11852 | } | |
11853 | ||
11854 | return NULL; | |
11855 | } | |
11856 | ||
c906108c | 11857 | void |
fba45db2 | 11858 | _initialize_breakpoint (void) |
c906108c SS |
11859 | { |
11860 | struct cmd_list_element *c; | |
11861 | ||
84acb35a | 11862 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 11863 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 11864 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 11865 | |
c906108c SS |
11866 | breakpoint_chain = 0; |
11867 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
11868 | before a breakpoint is set. */ | |
11869 | breakpoint_count = 0; | |
11870 | ||
1042e4c0 SS |
11871 | tracepoint_count = 0; |
11872 | ||
1bedd215 AC |
11873 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
11874 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
11875 | Usage is `ignore N COUNT'.")); | |
c906108c | 11876 | if (xdb_commands) |
c5aa993b | 11877 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 11878 | |
1bedd215 AC |
11879 | add_com ("commands", class_breakpoint, commands_command, _("\ |
11880 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
11881 | Give breakpoint number as argument after \"commands\".\n\ |
11882 | With no argument, the targeted breakpoint is the last one set.\n\ | |
11883 | The commands themselves follow starting on the next line.\n\ | |
11884 | Type a line containing \"end\" to indicate the end of them.\n\ | |
11885 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 11886 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 11887 | |
1bedd215 AC |
11888 | add_com ("condition", class_breakpoint, condition_command, _("\ |
11889 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 11890 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 11891 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 11892 | |
1bedd215 | 11893 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 11894 | Set a temporary breakpoint.\n\ |
c906108c SS |
11895 | Like \"break\" except the breakpoint is only temporary,\n\ |
11896 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
11897 | by using \"enable delete\" on the breakpoint number.\n\ |
11898 | \n" | |
11899 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 11900 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 11901 | |
1bedd215 | 11902 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 11903 | Set a hardware assisted breakpoint.\n\ |
c906108c | 11904 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
11905 | some target hardware may not have this support.\n\ |
11906 | \n" | |
11907 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 11908 | set_cmd_completer (c, location_completer); |
c906108c | 11909 | |
1bedd215 | 11910 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 11911 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 11912 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
11913 | so it will be deleted when hit.\n\ |
11914 | \n" | |
11915 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 11916 | set_cmd_completer (c, location_completer); |
c906108c | 11917 | |
1bedd215 AC |
11918 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
11919 | Enable some breakpoints.\n\ | |
c906108c SS |
11920 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11921 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11922 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11923 | With a subcommand you can enable temporarily."), |
c906108c SS |
11924 | &enablelist, "enable ", 1, &cmdlist); |
11925 | if (xdb_commands) | |
1bedd215 AC |
11926 | add_com ("ab", class_breakpoint, enable_command, _("\ |
11927 | Enable some breakpoints.\n\ | |
c906108c SS |
11928 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11929 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
11930 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11931 | With a subcommand you can enable temporarily.")); |
c906108c SS |
11932 | |
11933 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
11934 | ||
84951ab5 | 11935 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 11936 | Enable some breakpoints.\n\ |
c906108c SS |
11937 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
11938 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 11939 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 11940 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 11941 | |
1a966eab AC |
11942 | add_cmd ("once", no_class, enable_once_command, _("\ |
11943 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11944 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11945 | &enablebreaklist); |
11946 | ||
1a966eab AC |
11947 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11948 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11949 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11950 | &enablebreaklist); |
11951 | ||
1a966eab AC |
11952 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
11953 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
11954 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
11955 | &enablelist); |
11956 | ||
1a966eab AC |
11957 | add_cmd ("once", no_class, enable_once_command, _("\ |
11958 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
11959 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
11960 | &enablelist); |
11961 | ||
1bedd215 AC |
11962 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
11963 | Disable some breakpoints.\n\ | |
c906108c SS |
11964 | Arguments are breakpoint numbers with spaces in between.\n\ |
11965 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11966 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
11967 | &disablelist, "disable ", 1, &cmdlist); |
11968 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
11969 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
11970 | if (xdb_commands) | |
1bedd215 AC |
11971 | add_com ("sb", class_breakpoint, disable_command, _("\ |
11972 | Disable some breakpoints.\n\ | |
c906108c SS |
11973 | Arguments are breakpoint numbers with spaces in between.\n\ |
11974 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 11975 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 11976 | |
1a966eab AC |
11977 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
11978 | Disable some breakpoints.\n\ | |
c906108c SS |
11979 | Arguments are breakpoint numbers with spaces in between.\n\ |
11980 | To disable all breakpoints, give no argument.\n\ | |
11981 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 11982 | This command may be abbreviated \"disable\"."), |
c906108c SS |
11983 | &disablelist); |
11984 | ||
1bedd215 AC |
11985 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
11986 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
11987 | Arguments are breakpoint numbers with spaces in between.\n\ |
11988 | To delete all breakpoints, give no argument.\n\ | |
11989 | \n\ | |
11990 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 11991 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
11992 | &deletelist, "delete ", 1, &cmdlist); |
11993 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 11994 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 11995 | if (xdb_commands) |
1bedd215 AC |
11996 | add_com ("db", class_breakpoint, delete_command, _("\ |
11997 | Delete some breakpoints.\n\ | |
c906108c | 11998 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 11999 | To delete all breakpoints, give no argument.\n")); |
c906108c | 12000 | |
1a966eab AC |
12001 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
12002 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
12003 | Arguments are breakpoint numbers with spaces in between.\n\ |
12004 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 12005 | This command may be abbreviated \"delete\"."), |
c906108c SS |
12006 | &deletelist); |
12007 | ||
1bedd215 AC |
12008 | add_com ("clear", class_breakpoint, clear_command, _("\ |
12009 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
12010 | Argument may be line number, function name, or \"*\" and an address.\n\ |
12011 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
12012 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
12013 | If an address is specified, breakpoints at that address are cleared.\n\ |
12014 | \n\ | |
12015 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
12016 | is executing in.\n\ |
12017 | \n\ | |
1bedd215 | 12018 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 12019 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 12020 | |
1bedd215 | 12021 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
12022 | Set breakpoint at specified line or function.\n" |
12023 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 12024 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 12025 | |
c906108c SS |
12026 | add_com_alias ("b", "break", class_run, 1); |
12027 | add_com_alias ("br", "break", class_run, 1); | |
12028 | add_com_alias ("bre", "break", class_run, 1); | |
12029 | add_com_alias ("brea", "break", class_run, 1); | |
12030 | ||
7681d515 PM |
12031 | if (xdb_commands) |
12032 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
12033 | |
12034 | if (dbx_commands) | |
12035 | { | |
1bedd215 AC |
12036 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
12037 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
12038 | &stoplist, "stop ", 1, &cmdlist); |
12039 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 12040 | _("Break in function or address."), &stoplist); |
c5aa993b | 12041 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 12042 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
12043 | add_com ("status", class_info, breakpoints_info, _("\ |
12044 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12045 | The \"Type\" column indicates one of:\n\ |
12046 | \tbreakpoint - normal breakpoint\n\ | |
12047 | \twatchpoint - watchpoint\n\ | |
12048 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12049 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12050 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12051 | address and file/line number respectively.\n\ |
12052 | \n\ | |
12053 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12054 | are set to the address of the last breakpoint listed unless the command\n\ |
12055 | is prefixed with \"server \".\n\n\ | |
c906108c | 12056 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12057 | breakpoint set.")); |
c906108c SS |
12058 | } |
12059 | ||
1bedd215 AC |
12060 | add_info ("breakpoints", breakpoints_info, _("\ |
12061 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12062 | The \"Type\" column indicates one of:\n\ |
12063 | \tbreakpoint - normal breakpoint\n\ | |
12064 | \twatchpoint - watchpoint\n\ | |
12065 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12066 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12067 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12068 | address and file/line number respectively.\n\ |
12069 | \n\ | |
12070 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12071 | are set to the address of the last breakpoint listed unless the command\n\ |
12072 | is prefixed with \"server \".\n\n\ | |
c906108c | 12073 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12074 | breakpoint set.")); |
c906108c | 12075 | |
6b04bdb7 MS |
12076 | add_info_alias ("b", "breakpoints", 1); |
12077 | ||
c906108c | 12078 | if (xdb_commands) |
1bedd215 AC |
12079 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
12080 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12081 | The \"Type\" column indicates one of:\n\ |
12082 | \tbreakpoint - normal breakpoint\n\ | |
12083 | \twatchpoint - watchpoint\n\ | |
12084 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
12085 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
12086 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
12087 | address and file/line number respectively.\n\ |
12088 | \n\ | |
12089 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12090 | are set to the address of the last breakpoint listed unless the command\n\ |
12091 | is prefixed with \"server \".\n\n\ | |
c906108c | 12092 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 12093 | breakpoint set.")); |
c906108c | 12094 | |
1a966eab AC |
12095 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
12096 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
12097 | The \"Type\" column indicates one of:\n\ |
12098 | \tbreakpoint - normal breakpoint\n\ | |
12099 | \twatchpoint - watchpoint\n\ | |
12100 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
12101 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
12102 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
12103 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
12104 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
12105 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
12106 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
12107 | address and file/line number respectively.\n\ |
12108 | \n\ | |
12109 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
12110 | are set to the address of the last breakpoint listed unless the command\n\ |
12111 | is prefixed with \"server \".\n\n\ | |
c906108c | 12112 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 12113 | breakpoint set."), |
c906108c SS |
12114 | &maintenanceinfolist); |
12115 | ||
44feb3ce TT |
12116 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
12117 | Set catchpoints to catch events."), | |
12118 | &catch_cmdlist, "catch ", | |
12119 | 0/*allow-unknown*/, &cmdlist); | |
12120 | ||
12121 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
12122 | Set temporary catchpoints to catch events."), | |
12123 | &tcatch_cmdlist, "tcatch ", | |
12124 | 0/*allow-unknown*/, &cmdlist); | |
12125 | ||
12126 | /* Add catch and tcatch sub-commands. */ | |
12127 | add_catch_command ("catch", _("\ | |
12128 | Catch an exception, when caught.\n\ | |
12129 | With an argument, catch only exceptions with the given name."), | |
12130 | catch_catch_command, | |
a96d9b2e | 12131 | NULL, |
44feb3ce TT |
12132 | CATCH_PERMANENT, |
12133 | CATCH_TEMPORARY); | |
12134 | add_catch_command ("throw", _("\ | |
12135 | Catch an exception, when thrown.\n\ | |
12136 | With an argument, catch only exceptions with the given name."), | |
12137 | catch_throw_command, | |
a96d9b2e | 12138 | NULL, |
44feb3ce TT |
12139 | CATCH_PERMANENT, |
12140 | CATCH_TEMPORARY); | |
12141 | add_catch_command ("fork", _("Catch calls to fork."), | |
12142 | catch_fork_command_1, | |
a96d9b2e | 12143 | NULL, |
44feb3ce TT |
12144 | (void *) (uintptr_t) catch_fork_permanent, |
12145 | (void *) (uintptr_t) catch_fork_temporary); | |
12146 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
12147 | catch_fork_command_1, | |
a96d9b2e | 12148 | NULL, |
44feb3ce TT |
12149 | (void *) (uintptr_t) catch_vfork_permanent, |
12150 | (void *) (uintptr_t) catch_vfork_temporary); | |
12151 | add_catch_command ("exec", _("Catch calls to exec."), | |
12152 | catch_exec_command_1, | |
a96d9b2e SDJ |
12153 | NULL, |
12154 | CATCH_PERMANENT, | |
12155 | CATCH_TEMPORARY); | |
12156 | add_catch_command ("syscall", _("\ | |
12157 | Catch system calls by their names and/or numbers.\n\ | |
12158 | Arguments say which system calls to catch. If no arguments\n\ | |
12159 | are given, every system call will be caught.\n\ | |
12160 | Arguments, if given, should be one or more system call names\n\ | |
12161 | (if your system supports that), or system call numbers."), | |
12162 | catch_syscall_command_1, | |
12163 | catch_syscall_completer, | |
44feb3ce TT |
12164 | CATCH_PERMANENT, |
12165 | CATCH_TEMPORARY); | |
44feb3ce TT |
12166 | add_catch_command ("exception", _("\ |
12167 | Catch Ada exceptions, when raised.\n\ | |
12168 | With an argument, catch only exceptions with the given name."), | |
12169 | catch_ada_exception_command, | |
a96d9b2e | 12170 | NULL, |
44feb3ce TT |
12171 | CATCH_PERMANENT, |
12172 | CATCH_TEMPORARY); | |
12173 | add_catch_command ("assert", _("\ | |
12174 | Catch failed Ada assertions, when raised.\n\ | |
12175 | With an argument, catch only exceptions with the given name."), | |
12176 | catch_assert_command, | |
a96d9b2e | 12177 | NULL, |
44feb3ce TT |
12178 | CATCH_PERMANENT, |
12179 | CATCH_TEMPORARY); | |
c5aa993b | 12180 | |
1bedd215 AC |
12181 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
12182 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12183 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 12184 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12185 | an expression changes.\n\ |
12186 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12187 | the memory to which it refers.")); | |
65d12d83 | 12188 | set_cmd_completer (c, expression_completer); |
c906108c | 12189 | |
1bedd215 AC |
12190 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
12191 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 12192 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 12193 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12194 | an expression is read.\n\ |
12195 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12196 | the memory to which it refers.")); | |
65d12d83 | 12197 | set_cmd_completer (c, expression_completer); |
c906108c | 12198 | |
1bedd215 AC |
12199 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
12200 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 12201 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 12202 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
12203 | an expression is either read or written.\n\ |
12204 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
12205 | the memory to which it refers.")); | |
65d12d83 | 12206 | set_cmd_completer (c, expression_completer); |
c906108c | 12207 | |
d77f58be SS |
12208 | add_info ("watchpoints", watchpoints_info, _("\ |
12209 | Status of watchpoints, or watchpoint number NUMBER.")); | |
12210 | ||
c906108c SS |
12211 | |
12212 | ||
920d2a44 AC |
12213 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
12214 | respond to changes - contrary to the description. */ | |
85c07804 AC |
12215 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
12216 | &can_use_hw_watchpoints, _("\ | |
12217 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
12218 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
12219 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
12220 | such is available. (However, any hardware watchpoints that were\n\ | |
12221 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
12222 | hardware.)"), |
12223 | NULL, | |
920d2a44 | 12224 | show_can_use_hw_watchpoints, |
85c07804 | 12225 | &setlist, &showlist); |
c906108c SS |
12226 | |
12227 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 12228 | |
1042e4c0 SS |
12229 | /* Tracepoint manipulation commands. */ |
12230 | ||
12231 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
12232 | Set a tracepoint at specified line or function.\n\ | |
12233 | \n" | |
12234 | BREAK_ARGS_HELP ("trace") "\n\ | |
12235 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12236 | set_cmd_completer (c, location_completer); | |
12237 | ||
12238 | add_com_alias ("tp", "trace", class_alias, 0); | |
12239 | add_com_alias ("tr", "trace", class_alias, 1); | |
12240 | add_com_alias ("tra", "trace", class_alias, 1); | |
12241 | add_com_alias ("trac", "trace", class_alias, 1); | |
12242 | ||
7a697b8d SS |
12243 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
12244 | Set a fast tracepoint at specified line or function.\n\ | |
12245 | \n" | |
12246 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
12247 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12248 | set_cmd_completer (c, location_completer); | |
12249 | ||
0fb4aa4b PA |
12250 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
12251 | Set a static tracepoint at specified line, function or marker.\n\ | |
12252 | \n\ | |
12253 | strace [LOCATION] [if CONDITION]\n\ | |
12254 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
12255 | or -m MARKER_ID.\n\ | |
12256 | If a line number is specified, probe the marker at start of code\n\ | |
12257 | for that line. If a function is specified, probe the marker at start\n\ | |
12258 | of code for that function. If an address is specified, probe the marker\n\ | |
12259 | at that exact address. If a marker id is specified, probe the marker\n\ | |
12260 | with that name. With no LOCATION, uses current execution address of\n\ | |
12261 | the selected stack frame.\n\ | |
12262 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
12263 | This collects arbitrary user data passed in the probe point call to the\n\ | |
12264 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
12265 | by printing the $_sdata variable like any other convenience variable.\n\ | |
12266 | \n\ | |
12267 | CONDITION is a boolean expression.\n\ | |
12268 | \n\ | |
d41c0fc8 PA |
12269 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
12270 | conditions are different.\n\ | |
0fb4aa4b PA |
12271 | \n\ |
12272 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
12273 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
12274 | set_cmd_completer (c, location_completer); | |
12275 | ||
1042e4c0 SS |
12276 | add_info ("tracepoints", tracepoints_info, _("\ |
12277 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
12278 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
12279 | last tracepoint set.")); | |
12280 | ||
12281 | add_info_alias ("tp", "tracepoints", 1); | |
12282 | ||
12283 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
12284 | Delete specified tracepoints.\n\ | |
12285 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12286 | No argument means delete all tracepoints."), | |
12287 | &deletelist); | |
12288 | ||
12289 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
12290 | Disable specified tracepoints.\n\ | |
12291 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12292 | No argument means disable all tracepoints."), | |
12293 | &disablelist); | |
12294 | deprecate_cmd (c, "disable"); | |
12295 | ||
12296 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
12297 | Enable specified tracepoints.\n\ | |
12298 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
12299 | No argument means enable all tracepoints."), | |
12300 | &enablelist); | |
12301 | deprecate_cmd (c, "enable"); | |
12302 | ||
12303 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
12304 | Set the passcount for a tracepoint.\n\ | |
12305 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
12306 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
12307 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
12308 | ||
6149aea9 PA |
12309 | add_prefix_cmd ("save", class_breakpoint, save_command, |
12310 | _("Save breakpoint definitions as a script."), | |
12311 | &save_cmdlist, "save ", | |
12312 | 0/*allow-unknown*/, &cmdlist); | |
12313 | ||
12314 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
12315 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 12316 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
12317 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
12318 | session to restore them."), | |
12319 | &save_cmdlist); | |
12320 | set_cmd_completer (c, filename_completer); | |
12321 | ||
12322 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 12323 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
12324 | Use the 'source' command in another debug session to restore them."), |
12325 | &save_cmdlist); | |
1042e4c0 SS |
12326 | set_cmd_completer (c, filename_completer); |
12327 | ||
6149aea9 PA |
12328 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
12329 | deprecate_cmd (c, "save tracepoints"); | |
12330 | ||
1bedd215 | 12331 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12332 | Breakpoint specific settings\n\ |
12333 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12334 | pending breakpoint behavior"), |
fa8d40ab JJ |
12335 | &breakpoint_set_cmdlist, "set breakpoint ", |
12336 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 12337 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
12338 | Breakpoint specific settings\n\ |
12339 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 12340 | pending breakpoint behavior"), |
fa8d40ab JJ |
12341 | &breakpoint_show_cmdlist, "show breakpoint ", |
12342 | 0/*allow-unknown*/, &showlist); | |
12343 | ||
7915a72c AC |
12344 | add_setshow_auto_boolean_cmd ("pending", no_class, |
12345 | &pending_break_support, _("\ | |
12346 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
12347 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
12348 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
12349 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
12350 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 12351 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 12352 | NULL, |
920d2a44 | 12353 | show_pending_break_support, |
6e1d7d6c AC |
12354 | &breakpoint_set_cmdlist, |
12355 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
12356 | |
12357 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
12358 | |
12359 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
12360 | &automatic_hardware_breakpoints, _("\ | |
12361 | Set automatic usage of hardware breakpoints."), _("\ | |
12362 | Show automatic usage of hardware breakpoints."), _("\ | |
12363 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
12364 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
12365 | a warning will be emitted for such breakpoints."), | |
12366 | NULL, | |
12367 | show_automatic_hardware_breakpoints, | |
12368 | &breakpoint_set_cmdlist, | |
12369 | &breakpoint_show_cmdlist); | |
74960c60 | 12370 | |
33e5cbd6 PA |
12371 | add_setshow_enum_cmd ("always-inserted", class_support, |
12372 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
12373 | Set mode for inserting breakpoints."), _("\ |
12374 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
12375 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
12376 | resumed, and removed when execution stops. When this mode is on,\n\ | |
12377 | breakpoints are inserted immediately and removed only when the user\n\ | |
12378 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
12379 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
12380 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
12381 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
12382 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
12383 | NULL, |
12384 | &show_always_inserted_mode, | |
12385 | &breakpoint_set_cmdlist, | |
12386 | &breakpoint_show_cmdlist); | |
765dc015 VP |
12387 | |
12388 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
12389 | |
12390 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 12391 | } |