1 /* Everything about breakpoints, for GDB.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
26 #include "breakpoint.h"
27 #include "tracepoint.h"
29 #include "expression.h"
35 #include "gdbthread.h"
38 #include "gdb_string.h"
39 #include "gdb-demangle.h"
40 #include "filenames.h"
46 #include "completer.h"
49 #include "cli/cli-script.h"
50 #include "gdb_assert.h"
55 #include "exceptions.h"
61 #include "xml-syscall.h"
62 #include "parser-defs.h"
63 #include "gdb_regex.h"
65 #include "cli/cli-utils.h"
66 #include "continuations.h"
69 #include "gdb_regex.h"
71 #include "dummy-frame.h"
75 /* readline include files */
76 #include "readline/readline.h"
77 #include "readline/history.h"
79 /* readline defines this. */
82 #include "mi/mi-common.h"
83 #include "python/python.h"
85 /* Enums for exception-handling support. */
86 enum exception_event_kind
92 /* Prototypes for local functions. */
94 static void enable_delete_command (char *, int);
96 static void enable_once_command (char *, int);
98 static void enable_count_command (char *, int);
100 static void disable_command (char *, int);
102 static void enable_command (char *, int);
104 static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *,
108 static void ignore_command (char *, int);
110 static int breakpoint_re_set_one (void *);
112 static void breakpoint_re_set_default (struct breakpoint *);
114 static void create_sals_from_address_default (char **,
115 struct linespec_result *,
119 static void create_breakpoints_sal_default (struct gdbarch *,
120 struct linespec_result *,
121 struct linespec_sals *,
122 char *, char *, enum bptype,
123 enum bpdisp, int, int,
125 const struct breakpoint_ops *,
126 int, int, int, unsigned);
128 static void decode_linespec_default (struct breakpoint *, char **,
129 struct symtabs_and_lines *);
131 static void clear_command (char *, int);
133 static void catch_command (char *, int);
135 static int can_use_hardware_watchpoint (struct value *);
137 static void break_command_1 (char *, int, int);
139 static void mention (struct breakpoint *);
141 static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *,
143 const struct breakpoint_ops *);
144 static struct bp_location *add_location_to_breakpoint (struct breakpoint *,
145 const struct symtab_and_line *);
147 /* This function is used in gdbtk sources and thus can not be made
149 struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch,
150 struct symtab_and_line,
152 const struct breakpoint_ops *);
154 static struct breakpoint *
155 momentary_breakpoint_from_master (struct breakpoint *orig,
157 const struct breakpoint_ops *ops);
159 static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int);
161 static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch,
165 static void describe_other_breakpoints (struct gdbarch *,
166 struct program_space *, CORE_ADDR,
167 struct obj_section *, int);
169 static int breakpoint_address_match (struct address_space *aspace1,
171 struct address_space *aspace2,
174 static int watchpoint_locations_match (struct bp_location *loc1,
175 struct bp_location *loc2);
177 static int breakpoint_location_address_match (struct bp_location *bl,
178 struct address_space *aspace,
181 static void breakpoints_info (char *, int);
183 static void watchpoints_info (char *, int);
185 static int breakpoint_1 (char *, int,
186 int (*) (const struct breakpoint *));
188 static int breakpoint_cond_eval (void *);
190 static void cleanup_executing_breakpoints (void *);
192 static void commands_command (char *, int);
194 static void condition_command (char *, int);
203 static int remove_breakpoint (struct bp_location *, insertion_state_t);
204 static int remove_breakpoint_1 (struct bp_location *, insertion_state_t);
206 static enum print_stop_action print_bp_stop_message (bpstat bs);
208 static int watchpoint_check (void *);
210 static void maintenance_info_breakpoints (char *, int);
212 static int hw_breakpoint_used_count (void);
214 static int hw_watchpoint_use_count (struct breakpoint *);
216 static int hw_watchpoint_used_count_others (struct breakpoint *except,
218 int *other_type_used);
220 static void hbreak_command (char *, int);
222 static void thbreak_command (char *, int);
224 static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp,
227 static void stop_command (char *arg, int from_tty);
229 static void stopin_command (char *arg, int from_tty);
231 static void stopat_command (char *arg, int from_tty);
233 static char *ep_parse_optional_if_clause (char **arg);
235 static void catch_exception_command_1 (enum exception_event_kind ex_event,
236 char *arg, int tempflag, int from_tty);
238 static void tcatch_command (char *arg, int from_tty);
240 static void detach_single_step_breakpoints (void);
242 static int single_step_breakpoint_inserted_here_p (struct address_space *,
245 static void free_bp_location (struct bp_location *loc);
246 static void incref_bp_location (struct bp_location *loc);
247 static void decref_bp_location (struct bp_location **loc);
249 static struct bp_location *allocate_bp_location (struct breakpoint *bpt);
251 static void update_global_location_list (int);
253 static void update_global_location_list_nothrow (int);
255 static int is_hardware_watchpoint (const struct breakpoint *bpt);
257 static void insert_breakpoint_locations (void);
259 static int syscall_catchpoint_p (struct breakpoint *b);
261 static void tracepoints_info (char *, int);
263 static void delete_trace_command (char *, int);
265 static void enable_trace_command (char *, int);
267 static void disable_trace_command (char *, int);
269 static void trace_pass_command (char *, int);
271 static void set_tracepoint_count (int num);
273 static int is_masked_watchpoint (const struct breakpoint *b);
275 static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address);
277 /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero
280 static int strace_marker_p (struct breakpoint *b);
282 static void init_catchpoint (struct breakpoint *b,
283 struct gdbarch *gdbarch, int tempflag,
285 const struct breakpoint_ops *ops);
287 /* The abstract base class all breakpoint_ops structures inherit
289 static struct breakpoint_ops base_breakpoint_ops;
291 /* The breakpoint_ops structure to be inherited by all breakpoint_ops
292 that are implemented on top of software or hardware breakpoints
293 (user breakpoints, internal and momentary breakpoints, etc.). */
294 static struct breakpoint_ops bkpt_base_breakpoint_ops;
296 /* Internal breakpoints class type. */
297 static struct breakpoint_ops internal_breakpoint_ops;
299 /* Momentary breakpoints class type. */
300 static struct breakpoint_ops momentary_breakpoint_ops;
302 /* Momentary breakpoints for bp_longjmp and bp_exception class type. */
303 static struct breakpoint_ops longjmp_breakpoint_ops;
305 /* The breakpoint_ops structure to be used in regular user created
307 struct breakpoint_ops bkpt_breakpoint_ops;
309 /* Breakpoints set on probes. */
310 static struct breakpoint_ops bkpt_probe_breakpoint_ops;
312 /* Dynamic printf class type. */
313 static struct breakpoint_ops dprintf_breakpoint_ops;
315 /* The style in which to perform a dynamic printf. This is a user
316 option because different output options have different tradeoffs;
317 if GDB does the printing, there is better error handling if there
318 is a problem with any of the arguments, but using an inferior
319 function lets you have special-purpose printers and sending of
320 output to the same place as compiled-in print functions. */
322 static const char dprintf_style_gdb[] = "gdb";
323 static const char dprintf_style_call[] = "call";
324 static const char dprintf_style_agent[] = "agent";
325 static const char *const dprintf_style_enums[] = {
331 static const char *dprintf_style = dprintf_style_gdb;
333 /* The function to use for dynamic printf if the preferred style is to
334 call into the inferior. The value is simply a string that is
335 copied into the command, so it can be anything that GDB can
336 evaluate to a callable address, not necessarily a function name. */
338 static char *dprintf_function = "";
340 /* The channel to use for dynamic printf if the preferred style is to
341 call into the inferior; if a nonempty string, it will be passed to
342 the call as the first argument, with the format string as the
343 second. As with the dprintf function, this can be anything that
344 GDB knows how to evaluate, so in addition to common choices like
345 "stderr", this could be an app-specific expression like
346 "mystreams[curlogger]". */
348 static char *dprintf_channel = "";
350 /* True if dprintf commands should continue to operate even if GDB
352 static int disconnected_dprintf = 1;
354 /* A reference-counted struct command_line. This lets multiple
355 breakpoints share a single command list. */
356 struct counted_command_line
358 /* The reference count. */
361 /* The command list. */
362 struct command_line *commands;
365 struct command_line *
366 breakpoint_commands (struct breakpoint *b)
368 return b->commands ? b->commands->commands : NULL;
371 /* Flag indicating that a command has proceeded the inferior past the
372 current breakpoint. */
374 static int breakpoint_proceeded;
377 bpdisp_text (enum bpdisp disp)
379 /* NOTE: the following values are a part of MI protocol and
380 represent values of 'disp' field returned when inferior stops at
382 static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"};
384 return bpdisps[(int) disp];
387 /* Prototypes for exported functions. */
388 /* If FALSE, gdb will not use hardware support for watchpoints, even
389 if such is available. */
390 static int can_use_hw_watchpoints;
393 show_can_use_hw_watchpoints (struct ui_file *file, int from_tty,
394 struct cmd_list_element *c,
397 fprintf_filtered (file,
398 _("Debugger's willingness to use "
399 "watchpoint hardware is %s.\n"),
403 /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
404 If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
405 for unrecognized breakpoint locations.
406 If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */
407 static enum auto_boolean pending_break_support;
409 show_pending_break_support (struct ui_file *file, int from_tty,
410 struct cmd_list_element *c,
413 fprintf_filtered (file,
414 _("Debugger's behavior regarding "
415 "pending breakpoints is %s.\n"),
419 /* If 1, gdb will automatically use hardware breakpoints for breakpoints
420 set with "break" but falling in read-only memory.
421 If 0, gdb will warn about such breakpoints, but won't automatically
422 use hardware breakpoints. */
423 static int automatic_hardware_breakpoints;
425 show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty,
426 struct cmd_list_element *c,
429 fprintf_filtered (file,
430 _("Automatic usage of hardware breakpoints is %s.\n"),
434 /* If on, gdb will keep breakpoints inserted even as inferior is
435 stopped, and immediately insert any new breakpoints. If off, gdb
436 will insert breakpoints into inferior only when resuming it, and
437 will remove breakpoints upon stop. If auto, GDB will behave as ON
438 if in non-stop mode, and as OFF if all-stop mode.*/
440 static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO;
443 show_always_inserted_mode (struct ui_file *file, int from_tty,
444 struct cmd_list_element *c, const char *value)
446 if (always_inserted_mode == AUTO_BOOLEAN_AUTO)
447 fprintf_filtered (file,
448 _("Always inserted breakpoint "
449 "mode is %s (currently %s).\n"),
451 breakpoints_always_inserted_mode () ? "on" : "off");
453 fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
458 breakpoints_always_inserted_mode (void)
460 return (always_inserted_mode == AUTO_BOOLEAN_TRUE
461 || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop));
464 static const char condition_evaluation_both[] = "host or target";
466 /* Modes for breakpoint condition evaluation. */
467 static const char condition_evaluation_auto[] = "auto";
468 static const char condition_evaluation_host[] = "host";
469 static const char condition_evaluation_target[] = "target";
470 static const char *const condition_evaluation_enums[] = {
471 condition_evaluation_auto,
472 condition_evaluation_host,
473 condition_evaluation_target,
477 /* Global that holds the current mode for breakpoint condition evaluation. */
478 static const char *condition_evaluation_mode_1 = condition_evaluation_auto;
480 /* Global that we use to display information to the user (gets its value from
481 condition_evaluation_mode_1. */
482 static const char *condition_evaluation_mode = condition_evaluation_auto;
484 /* Translate a condition evaluation mode MODE into either "host"
485 or "target". This is used mostly to translate from "auto" to the
486 real setting that is being used. It returns the translated
490 translate_condition_evaluation_mode (const char *mode)
492 if (mode == condition_evaluation_auto)
494 if (target_supports_evaluation_of_breakpoint_conditions ())
495 return condition_evaluation_target;
497 return condition_evaluation_host;
503 /* Discovers what condition_evaluation_auto translates to. */
506 breakpoint_condition_evaluation_mode (void)
508 return translate_condition_evaluation_mode (condition_evaluation_mode);
511 /* Return true if GDB should evaluate breakpoint conditions or false
515 gdb_evaluates_breakpoint_condition_p (void)
517 const char *mode = breakpoint_condition_evaluation_mode ();
519 return (mode == condition_evaluation_host);
522 void _initialize_breakpoint (void);
524 /* Are we executing breakpoint commands? */
525 static int executing_breakpoint_commands;
527 /* Are overlay event breakpoints enabled? */
528 static int overlay_events_enabled;
530 /* See description in breakpoint.h. */
531 int target_exact_watchpoints = 0;
533 /* Walk the following statement or block through all breakpoints.
534 ALL_BREAKPOINTS_SAFE does so even if the statement deletes the
535 current breakpoint. */
537 #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next)
539 #define ALL_BREAKPOINTS_SAFE(B,TMP) \
540 for (B = breakpoint_chain; \
541 B ? (TMP=B->next, 1): 0; \
544 /* Similar iterator for the low-level breakpoints. SAFE variant is
545 not provided so update_global_location_list must not be called
546 while executing the block of ALL_BP_LOCATIONS. */
548 #define ALL_BP_LOCATIONS(B,BP_TMP) \
549 for (BP_TMP = bp_location; \
550 BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \
553 /* Iterates through locations with address ADDRESS for the currently selected
554 program space. BP_LOCP_TMP points to each object. BP_LOCP_START points
555 to where the loop should start from.
556 If BP_LOCP_START is a NULL pointer, the macro automatically seeks the
557 appropriate location to start with. */
559 #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \
560 for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \
561 BP_LOCP_TMP = BP_LOCP_START; \
563 && (BP_LOCP_TMP < bp_location + bp_location_count \
564 && (*BP_LOCP_TMP)->address == ADDRESS); \
567 /* Iterator for tracepoints only. */
569 #define ALL_TRACEPOINTS(B) \
570 for (B = breakpoint_chain; B; B = B->next) \
571 if (is_tracepoint (B))
573 /* Chains of all breakpoints defined. */
575 struct breakpoint *breakpoint_chain;
577 /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */
579 static struct bp_location **bp_location;
581 /* Number of elements of BP_LOCATION. */
583 static unsigned bp_location_count;
585 /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and
586 ADDRESS for the current elements of BP_LOCATION which get a valid
587 result from bp_location_has_shadow. You can use it for roughly
588 limiting the subrange of BP_LOCATION to scan for shadow bytes for
589 an address you need to read. */
591 static CORE_ADDR bp_location_placed_address_before_address_max;
593 /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS
594 + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of
595 BP_LOCATION which get a valid result from bp_location_has_shadow.
596 You can use it for roughly limiting the subrange of BP_LOCATION to
597 scan for shadow bytes for an address you need to read. */
599 static CORE_ADDR bp_location_shadow_len_after_address_max;
601 /* The locations that no longer correspond to any breakpoint, unlinked
602 from bp_location array, but for which a hit may still be reported
604 VEC(bp_location_p) *moribund_locations = NULL;
606 /* Number of last breakpoint made. */
608 static int breakpoint_count;
610 /* The value of `breakpoint_count' before the last command that
611 created breakpoints. If the last (break-like) command created more
612 than one breakpoint, then the difference between BREAKPOINT_COUNT
613 and PREV_BREAKPOINT_COUNT is more than one. */
614 static int prev_breakpoint_count;
616 /* Number of last tracepoint made. */
618 static int tracepoint_count;
620 static struct cmd_list_element *breakpoint_set_cmdlist;
621 static struct cmd_list_element *breakpoint_show_cmdlist;
622 struct cmd_list_element *save_cmdlist;
624 /* Return whether a breakpoint is an active enabled breakpoint. */
626 breakpoint_enabled (struct breakpoint *b)
628 return (b->enable_state == bp_enabled);
631 /* Set breakpoint count to NUM. */
634 set_breakpoint_count (int num)
636 prev_breakpoint_count = breakpoint_count;
637 breakpoint_count = num;
638 set_internalvar_integer (lookup_internalvar ("bpnum"), num);
641 /* Used by `start_rbreak_breakpoints' below, to record the current
642 breakpoint count before "rbreak" creates any breakpoint. */
643 static int rbreak_start_breakpoint_count;
645 /* Called at the start an "rbreak" command to record the first
649 start_rbreak_breakpoints (void)
651 rbreak_start_breakpoint_count = breakpoint_count;
654 /* Called at the end of an "rbreak" command to record the last
658 end_rbreak_breakpoints (void)
660 prev_breakpoint_count = rbreak_start_breakpoint_count;
663 /* Used in run_command to zero the hit count when a new run starts. */
666 clear_breakpoint_hit_counts (void)
668 struct breakpoint *b;
674 /* Allocate a new counted_command_line with reference count of 1.
675 The new structure owns COMMANDS. */
677 static struct counted_command_line *
678 alloc_counted_command_line (struct command_line *commands)
680 struct counted_command_line *result
681 = xmalloc (sizeof (struct counted_command_line));
684 result->commands = commands;
688 /* Increment reference count. This does nothing if CMD is NULL. */
691 incref_counted_command_line (struct counted_command_line *cmd)
697 /* Decrement reference count. If the reference count reaches 0,
698 destroy the counted_command_line. Sets *CMDP to NULL. This does
699 nothing if *CMDP is NULL. */
702 decref_counted_command_line (struct counted_command_line **cmdp)
706 if (--(*cmdp)->refc == 0)
708 free_command_lines (&(*cmdp)->commands);
715 /* A cleanup function that calls decref_counted_command_line. */
718 do_cleanup_counted_command_line (void *arg)
720 decref_counted_command_line (arg);
723 /* Create a cleanup that calls decref_counted_command_line on the
726 static struct cleanup *
727 make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp)
729 return make_cleanup (do_cleanup_counted_command_line, cmdp);
733 /* Return the breakpoint with the specified number, or NULL
734 if the number does not refer to an existing breakpoint. */
737 get_breakpoint (int num)
739 struct breakpoint *b;
742 if (b->number == num)
750 /* Mark locations as "conditions have changed" in case the target supports
751 evaluating conditions on its side. */
754 mark_breakpoint_modified (struct breakpoint *b)
756 struct bp_location *loc;
758 /* This is only meaningful if the target is
759 evaluating conditions and if the user has
760 opted for condition evaluation on the target's
762 if (gdb_evaluates_breakpoint_condition_p ()
763 || !target_supports_evaluation_of_breakpoint_conditions ())
766 if (!is_breakpoint (b))
769 for (loc = b->loc; loc; loc = loc->next)
770 loc->condition_changed = condition_modified;
773 /* Mark location as "conditions have changed" in case the target supports
774 evaluating conditions on its side. */
777 mark_breakpoint_location_modified (struct bp_location *loc)
779 /* This is only meaningful if the target is
780 evaluating conditions and if the user has
781 opted for condition evaluation on the target's
783 if (gdb_evaluates_breakpoint_condition_p ()
784 || !target_supports_evaluation_of_breakpoint_conditions ())
788 if (!is_breakpoint (loc->owner))
791 loc->condition_changed = condition_modified;
794 /* Sets the condition-evaluation mode using the static global
795 condition_evaluation_mode. */
798 set_condition_evaluation_mode (char *args, int from_tty,
799 struct cmd_list_element *c)
801 const char *old_mode, *new_mode;
803 if ((condition_evaluation_mode_1 == condition_evaluation_target)
804 && !target_supports_evaluation_of_breakpoint_conditions ())
806 condition_evaluation_mode_1 = condition_evaluation_mode;
807 warning (_("Target does not support breakpoint condition evaluation.\n"
808 "Using host evaluation mode instead."));
812 new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1);
813 old_mode = translate_condition_evaluation_mode (condition_evaluation_mode);
815 /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the
816 settings was "auto". */
817 condition_evaluation_mode = condition_evaluation_mode_1;
819 /* Only update the mode if the user picked a different one. */
820 if (new_mode != old_mode)
822 struct bp_location *loc, **loc_tmp;
823 /* If the user switched to a different evaluation mode, we
824 need to synch the changes with the target as follows:
826 "host" -> "target": Send all (valid) conditions to the target.
827 "target" -> "host": Remove all the conditions from the target.
830 if (new_mode == condition_evaluation_target)
832 /* Mark everything modified and synch conditions with the
834 ALL_BP_LOCATIONS (loc, loc_tmp)
835 mark_breakpoint_location_modified (loc);
839 /* Manually mark non-duplicate locations to synch conditions
840 with the target. We do this to remove all the conditions the
841 target knows about. */
842 ALL_BP_LOCATIONS (loc, loc_tmp)
843 if (is_breakpoint (loc->owner) && loc->inserted)
844 loc->needs_update = 1;
848 update_global_location_list (1);
854 /* Shows the current mode of breakpoint condition evaluation. Explicitly shows
855 what "auto" is translating to. */
858 show_condition_evaluation_mode (struct ui_file *file, int from_tty,
859 struct cmd_list_element *c, const char *value)
861 if (condition_evaluation_mode == condition_evaluation_auto)
862 fprintf_filtered (file,
863 _("Breakpoint condition evaluation "
864 "mode is %s (currently %s).\n"),
866 breakpoint_condition_evaluation_mode ());
868 fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"),
872 /* A comparison function for bp_location AP and BP that is used by
873 bsearch. This comparison function only cares about addresses, unlike
874 the more general bp_location_compare function. */
877 bp_location_compare_addrs (const void *ap, const void *bp)
879 struct bp_location *a = *(void **) ap;
880 struct bp_location *b = *(void **) bp;
882 if (a->address == b->address)
885 return ((a->address > b->address) - (a->address < b->address));
888 /* Helper function to skip all bp_locations with addresses
889 less than ADDRESS. It returns the first bp_location that
890 is greater than or equal to ADDRESS. If none is found, just
893 static struct bp_location **
894 get_first_locp_gte_addr (CORE_ADDR address)
896 struct bp_location dummy_loc;
897 struct bp_location *dummy_locp = &dummy_loc;
898 struct bp_location **locp_found = NULL;
900 /* Initialize the dummy location's address field. */
901 memset (&dummy_loc, 0, sizeof (struct bp_location));
902 dummy_loc.address = address;
904 /* Find a close match to the first location at ADDRESS. */
905 locp_found = bsearch (&dummy_locp, bp_location, bp_location_count,
906 sizeof (struct bp_location **),
907 bp_location_compare_addrs);
909 /* Nothing was found, nothing left to do. */
910 if (locp_found == NULL)
913 /* We may have found a location that is at ADDRESS but is not the first in the
914 location's list. Go backwards (if possible) and locate the first one. */
915 while ((locp_found - 1) >= bp_location
916 && (*(locp_found - 1))->address == address)
923 set_breakpoint_condition (struct breakpoint *b, char *exp,
926 xfree (b->cond_string);
927 b->cond_string = NULL;
929 if (is_watchpoint (b))
931 struct watchpoint *w = (struct watchpoint *) b;
938 struct bp_location *loc;
940 for (loc = b->loc; loc; loc = loc->next)
945 /* No need to free the condition agent expression
946 bytecode (if we have one). We will handle this
947 when we go through update_global_location_list. */
954 printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number);
960 /* I don't know if it matters whether this is the string the user
961 typed in or the decompiled expression. */
962 b->cond_string = xstrdup (arg);
963 b->condition_not_parsed = 0;
965 if (is_watchpoint (b))
967 struct watchpoint *w = (struct watchpoint *) b;
969 innermost_block = NULL;
971 w->cond_exp = parse_exp_1 (&arg, 0, 0, 0);
973 error (_("Junk at end of expression"));
974 w->cond_exp_valid_block = innermost_block;
978 struct bp_location *loc;
980 for (loc = b->loc; loc; loc = loc->next)
984 parse_exp_1 (&arg, loc->address,
985 block_for_pc (loc->address), 0);
987 error (_("Junk at end of expression"));
991 mark_breakpoint_modified (b);
993 annotate_breakpoints_changed ();
994 observer_notify_breakpoint_modified (b);
997 /* Completion for the "condition" command. */
999 static VEC (char_ptr) *
1000 condition_completer (struct cmd_list_element *cmd, char *text, char *word)
1004 text = skip_spaces (text);
1005 space = skip_to_space (text);
1009 struct breakpoint *b;
1010 VEC (char_ptr) *result = NULL;
1014 /* We don't support completion of history indices. */
1015 if (isdigit (text[1]))
1017 return complete_internalvar (&text[1]);
1020 /* We're completing the breakpoint number. */
1021 len = strlen (text);
1025 int single = b->loc->next == NULL;
1026 struct bp_location *loc;
1029 for (loc = b->loc; loc; loc = loc->next)
1034 xsnprintf (location, sizeof (location), "%d", b->number);
1036 xsnprintf (location, sizeof (location), "%d.%d", b->number,
1039 if (strncmp (location, text, len) == 0)
1040 VEC_safe_push (char_ptr, result, xstrdup (location));
1049 /* We're completing the expression part. */
1050 text = skip_spaces (space);
1051 return expression_completer (cmd, text, word);
1054 /* condition N EXP -- set break condition of breakpoint N to EXP. */
1057 condition_command (char *arg, int from_tty)
1059 struct breakpoint *b;
1064 error_no_arg (_("breakpoint number"));
1067 bnum = get_number (&p);
1069 error (_("Bad breakpoint argument: '%s'"), arg);
1072 if (b->number == bnum)
1074 /* Check if this breakpoint has a Python object assigned to
1075 it, and if it has a definition of the "stop"
1076 method. This method and conditions entered into GDB from
1077 the CLI are mutually exclusive. */
1079 && gdbpy_breakpoint_has_py_cond (b->py_bp_object))
1080 error (_("Cannot set a condition where a Python 'stop' "
1081 "method has been defined in the breakpoint."));
1082 set_breakpoint_condition (b, p, from_tty);
1084 if (is_breakpoint (b))
1085 update_global_location_list (1);
1090 error (_("No breakpoint number %d."), bnum);
1093 /* Check that COMMAND do not contain commands that are suitable
1094 only for tracepoints and not suitable for ordinary breakpoints.
1095 Throw if any such commands is found. */
1098 check_no_tracepoint_commands (struct command_line *commands)
1100 struct command_line *c;
1102 for (c = commands; c; c = c->next)
1106 if (c->control_type == while_stepping_control)
1107 error (_("The 'while-stepping' command can "
1108 "only be used for tracepoints"));
1110 for (i = 0; i < c->body_count; ++i)
1111 check_no_tracepoint_commands ((c->body_list)[i]);
1113 /* Not that command parsing removes leading whitespace and comment
1114 lines and also empty lines. So, we only need to check for
1115 command directly. */
1116 if (strstr (c->line, "collect ") == c->line)
1117 error (_("The 'collect' command can only be used for tracepoints"));
1119 if (strstr (c->line, "teval ") == c->line)
1120 error (_("The 'teval' command can only be used for tracepoints"));
1124 /* Encapsulate tests for different types of tracepoints. */
1127 is_tracepoint_type (enum bptype type)
1129 return (type == bp_tracepoint
1130 || type == bp_fast_tracepoint
1131 || type == bp_static_tracepoint);
1135 is_tracepoint (const struct breakpoint *b)
1137 return is_tracepoint_type (b->type);
1140 /* A helper function that validates that COMMANDS are valid for a
1141 breakpoint. This function will throw an exception if a problem is
1145 validate_commands_for_breakpoint (struct breakpoint *b,
1146 struct command_line *commands)
1148 if (is_tracepoint (b))
1150 /* We need to verify that each top-level element of commands is
1151 valid for tracepoints, that there's at most one
1152 while-stepping element, and that while-stepping's body has
1153 valid tracing commands excluding nested while-stepping. */
1154 struct command_line *c;
1155 struct command_line *while_stepping = 0;
1156 for (c = commands; c; c = c->next)
1158 if (c->control_type == while_stepping_control)
1160 if (b->type == bp_fast_tracepoint)
1161 error (_("The 'while-stepping' command "
1162 "cannot be used for fast tracepoint"));
1163 else if (b->type == bp_static_tracepoint)
1164 error (_("The 'while-stepping' command "
1165 "cannot be used for static tracepoint"));
1168 error (_("The 'while-stepping' command "
1169 "can be used only once"));
1176 struct command_line *c2;
1178 gdb_assert (while_stepping->body_count == 1);
1179 c2 = while_stepping->body_list[0];
1180 for (; c2; c2 = c2->next)
1182 if (c2->control_type == while_stepping_control)
1183 error (_("The 'while-stepping' command cannot be nested"));
1189 check_no_tracepoint_commands (commands);
1193 /* Return a vector of all the static tracepoints set at ADDR. The
1194 caller is responsible for releasing the vector. */
1197 static_tracepoints_here (CORE_ADDR addr)
1199 struct breakpoint *b;
1200 VEC(breakpoint_p) *found = 0;
1201 struct bp_location *loc;
1204 if (b->type == bp_static_tracepoint)
1206 for (loc = b->loc; loc; loc = loc->next)
1207 if (loc->address == addr)
1208 VEC_safe_push(breakpoint_p, found, b);
1214 /* Set the command list of B to COMMANDS. If breakpoint is tracepoint,
1215 validate that only allowed commands are included. */
1218 breakpoint_set_commands (struct breakpoint *b,
1219 struct command_line *commands)
1221 validate_commands_for_breakpoint (b, commands);
1223 decref_counted_command_line (&b->commands);
1224 b->commands = alloc_counted_command_line (commands);
1225 annotate_breakpoints_changed ();
1226 observer_notify_breakpoint_modified (b);
1229 /* Set the internal `silent' flag on the breakpoint. Note that this
1230 is not the same as the "silent" that may appear in the breakpoint's
1234 breakpoint_set_silent (struct breakpoint *b, int silent)
1236 int old_silent = b->silent;
1239 if (old_silent != silent)
1240 observer_notify_breakpoint_modified (b);
1243 /* Set the thread for this breakpoint. If THREAD is -1, make the
1244 breakpoint work for any thread. */
1247 breakpoint_set_thread (struct breakpoint *b, int thread)
1249 int old_thread = b->thread;
1252 if (old_thread != thread)
1253 observer_notify_breakpoint_modified (b);
1256 /* Set the task for this breakpoint. If TASK is 0, make the
1257 breakpoint work for any task. */
1260 breakpoint_set_task (struct breakpoint *b, int task)
1262 int old_task = b->task;
1265 if (old_task != task)
1266 observer_notify_breakpoint_modified (b);
1270 check_tracepoint_command (char *line, void *closure)
1272 struct breakpoint *b = closure;
1274 validate_actionline (&line, b);
1277 /* A structure used to pass information through
1278 map_breakpoint_numbers. */
1280 struct commands_info
1282 /* True if the command was typed at a tty. */
1285 /* The breakpoint range spec. */
1288 /* Non-NULL if the body of the commands are being read from this
1289 already-parsed command. */
1290 struct command_line *control;
1292 /* The command lines read from the user, or NULL if they have not
1294 struct counted_command_line *cmd;
1297 /* A callback for map_breakpoint_numbers that sets the commands for
1298 commands_command. */
1301 do_map_commands_command (struct breakpoint *b, void *data)
1303 struct commands_info *info = data;
1305 if (info->cmd == NULL)
1307 struct command_line *l;
1309 if (info->control != NULL)
1310 l = copy_command_lines (info->control->body_list[0]);
1313 struct cleanup *old_chain;
1316 str = xstrprintf (_("Type commands for breakpoint(s) "
1317 "%s, one per line."),
1320 old_chain = make_cleanup (xfree, str);
1322 l = read_command_lines (str,
1325 ? check_tracepoint_command : 0),
1328 do_cleanups (old_chain);
1331 info->cmd = alloc_counted_command_line (l);
1334 /* If a breakpoint was on the list more than once, we don't need to
1336 if (b->commands != info->cmd)
1338 validate_commands_for_breakpoint (b, info->cmd->commands);
1339 incref_counted_command_line (info->cmd);
1340 decref_counted_command_line (&b->commands);
1341 b->commands = info->cmd;
1342 annotate_breakpoints_changed ();
1343 observer_notify_breakpoint_modified (b);
1348 commands_command_1 (char *arg, int from_tty,
1349 struct command_line *control)
1351 struct cleanup *cleanups;
1352 struct commands_info info;
1354 info.from_tty = from_tty;
1355 info.control = control;
1357 /* If we read command lines from the user, then `info' will hold an
1358 extra reference to the commands that we must clean up. */
1359 cleanups = make_cleanup_decref_counted_command_line (&info.cmd);
1361 if (arg == NULL || !*arg)
1363 if (breakpoint_count - prev_breakpoint_count > 1)
1364 arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1,
1366 else if (breakpoint_count > 0)
1367 arg = xstrprintf ("%d", breakpoint_count);
1370 /* So that we don't try to free the incoming non-NULL
1371 argument in the cleanup below. Mapping breakpoint
1372 numbers will fail in this case. */
1377 /* The command loop has some static state, so we need to preserve
1379 arg = xstrdup (arg);
1382 make_cleanup (xfree, arg);
1386 map_breakpoint_numbers (arg, do_map_commands_command, &info);
1388 if (info.cmd == NULL)
1389 error (_("No breakpoints specified."));
1391 do_cleanups (cleanups);
1395 commands_command (char *arg, int from_tty)
1397 commands_command_1 (arg, from_tty, NULL);
1400 /* Like commands_command, but instead of reading the commands from
1401 input stream, takes them from an already parsed command structure.
1403 This is used by cli-script.c to DTRT with breakpoint commands
1404 that are part of if and while bodies. */
1405 enum command_control_type
1406 commands_from_control_command (char *arg, struct command_line *cmd)
1408 commands_command_1 (arg, 0, cmd);
1409 return simple_control;
1412 /* Return non-zero if BL->TARGET_INFO contains valid information. */
1415 bp_location_has_shadow (struct bp_location *bl)
1417 if (bl->loc_type != bp_loc_software_breakpoint)
1421 if (bl->target_info.shadow_len == 0)
1422 /* BL isn't valid, or doesn't shadow memory. */
1427 /* Update BUF, which is LEN bytes read from the target address MEMADDR,
1428 by replacing any memory breakpoints with their shadowed contents.
1430 If READBUF is not NULL, this buffer must not overlap with any of
1431 the breakpoint location's shadow_contents buffers. Otherwise,
1432 a failed assertion internal error will be raised.
1434 The range of shadowed area by each bp_location is:
1435 bl->address - bp_location_placed_address_before_address_max
1436 up to bl->address + bp_location_shadow_len_after_address_max
1437 The range we were requested to resolve shadows for is:
1438 memaddr ... memaddr + len
1439 Thus the safe cutoff boundaries for performance optimization are
1440 memaddr + len <= (bl->address
1441 - bp_location_placed_address_before_address_max)
1443 bl->address + bp_location_shadow_len_after_address_max <= memaddr */
1446 breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
1447 const gdb_byte *writebuf_org,
1448 ULONGEST memaddr, LONGEST len)
1450 /* Left boundary, right boundary and median element of our binary
1452 unsigned bc_l, bc_r, bc;
1454 /* Find BC_L which is a leftmost element which may affect BUF
1455 content. It is safe to report lower value but a failure to
1456 report higher one. */
1459 bc_r = bp_location_count;
1460 while (bc_l + 1 < bc_r)
1462 struct bp_location *bl;
1464 bc = (bc_l + bc_r) / 2;
1465 bl = bp_location[bc];
1467 /* Check first BL->ADDRESS will not overflow due to the added
1468 constant. Then advance the left boundary only if we are sure
1469 the BC element can in no way affect the BUF content (MEMADDR
1470 to MEMADDR + LEN range).
1472 Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety
1473 offset so that we cannot miss a breakpoint with its shadow
1474 range tail still reaching MEMADDR. */
1476 if ((bl->address + bp_location_shadow_len_after_address_max
1478 && (bl->address + bp_location_shadow_len_after_address_max
1485 /* Due to the binary search above, we need to make sure we pick the
1486 first location that's at BC_L's address. E.g., if there are
1487 multiple locations at the same address, BC_L may end up pointing
1488 at a duplicate location, and miss the "master"/"inserted"
1489 location. Say, given locations L1, L2 and L3 at addresses A and
1492 L1@A, L2@A, L3@B, ...
1494 BC_L could end up pointing at location L2, while the "master"
1495 location could be L1. Since the `loc->inserted' flag is only set
1496 on "master" locations, we'd forget to restore the shadow of L1
1499 && bp_location[bc_l]->address == bp_location[bc_l - 1]->address)
1502 /* Now do full processing of the found relevant range of elements. */
1504 for (bc = bc_l; bc < bp_location_count; bc++)
1506 struct bp_location *bl = bp_location[bc];
1507 CORE_ADDR bp_addr = 0;
1511 /* bp_location array has BL->OWNER always non-NULL. */
1512 if (bl->owner->type == bp_none)
1513 warning (_("reading through apparently deleted breakpoint #%d?"),
1516 /* Performance optimization: any further element can no longer affect BUF
1519 if (bl->address >= bp_location_placed_address_before_address_max
1520 && memaddr + len <= (bl->address
1521 - bp_location_placed_address_before_address_max))
1524 if (!bp_location_has_shadow (bl))
1526 if (!breakpoint_address_match (bl->target_info.placed_address_space, 0,
1527 current_program_space->aspace, 0))
1530 /* Addresses and length of the part of the breakpoint that
1532 bp_addr = bl->target_info.placed_address;
1533 bp_size = bl->target_info.shadow_len;
1535 if (bp_addr + bp_size <= memaddr)
1536 /* The breakpoint is entirely before the chunk of memory we
1540 if (bp_addr >= memaddr + len)
1541 /* The breakpoint is entirely after the chunk of memory we are
1545 /* Offset within shadow_contents. */
1546 if (bp_addr < memaddr)
1548 /* Only copy the second part of the breakpoint. */
1549 bp_size -= memaddr - bp_addr;
1550 bptoffset = memaddr - bp_addr;
1554 if (bp_addr + bp_size > memaddr + len)
1556 /* Only copy the first part of the breakpoint. */
1557 bp_size -= (bp_addr + bp_size) - (memaddr + len);
1560 if (readbuf != NULL)
1562 /* Verify that the readbuf buffer does not overlap with
1563 the shadow_contents buffer. */
1564 gdb_assert (bl->target_info.shadow_contents >= readbuf + len
1565 || readbuf >= (bl->target_info.shadow_contents
1566 + bl->target_info.shadow_len));
1568 /* Update the read buffer with this inserted breakpoint's
1570 memcpy (readbuf + bp_addr - memaddr,
1571 bl->target_info.shadow_contents + bptoffset, bp_size);
1575 struct gdbarch *gdbarch = bl->gdbarch;
1576 const unsigned char *bp;
1577 CORE_ADDR placed_address = bl->target_info.placed_address;
1578 unsigned placed_size = bl->target_info.placed_size;
1580 /* Update the shadow with what we want to write to memory. */
1581 memcpy (bl->target_info.shadow_contents + bptoffset,
1582 writebuf_org + bp_addr - memaddr, bp_size);
1584 /* Determine appropriate breakpoint contents and size for this
1586 bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size);
1588 /* Update the final write buffer with this inserted
1589 breakpoint's INSN. */
1590 memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size);
1596 /* Return true if BPT is either a software breakpoint or a hardware
1600 is_breakpoint (const struct breakpoint *bpt)
1602 return (bpt->type == bp_breakpoint
1603 || bpt->type == bp_hardware_breakpoint
1604 || bpt->type == bp_dprintf);
1607 /* Return true if BPT is of any hardware watchpoint kind. */
1610 is_hardware_watchpoint (const struct breakpoint *bpt)
1612 return (bpt->type == bp_hardware_watchpoint
1613 || bpt->type == bp_read_watchpoint
1614 || bpt->type == bp_access_watchpoint);
1617 /* Return true if BPT is of any watchpoint kind, hardware or
1621 is_watchpoint (const struct breakpoint *bpt)
1623 return (is_hardware_watchpoint (bpt)
1624 || bpt->type == bp_watchpoint);
1627 /* Returns true if the current thread and its running state are safe
1628 to evaluate or update watchpoint B. Watchpoints on local
1629 expressions need to be evaluated in the context of the thread that
1630 was current when the watchpoint was created, and, that thread needs
1631 to be stopped to be able to select the correct frame context.
1632 Watchpoints on global expressions can be evaluated on any thread,
1633 and in any state. It is presently left to the target allowing
1634 memory accesses when threads are running. */
1637 watchpoint_in_thread_scope (struct watchpoint *b)
1639 return (b->base.pspace == current_program_space
1640 && (ptid_equal (b->watchpoint_thread, null_ptid)
1641 || (ptid_equal (inferior_ptid, b->watchpoint_thread)
1642 && !is_executing (inferior_ptid))));
1645 /* Set watchpoint B to disp_del_at_next_stop, even including its possible
1646 associated bp_watchpoint_scope breakpoint. */
1649 watchpoint_del_at_next_stop (struct watchpoint *w)
1651 struct breakpoint *b = &w->base;
1653 if (b->related_breakpoint != b)
1655 gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope);
1656 gdb_assert (b->related_breakpoint->related_breakpoint == b);
1657 b->related_breakpoint->disposition = disp_del_at_next_stop;
1658 b->related_breakpoint->related_breakpoint = b->related_breakpoint;
1659 b->related_breakpoint = b;
1661 b->disposition = disp_del_at_next_stop;
1664 /* Assuming that B is a watchpoint:
1665 - Reparse watchpoint expression, if REPARSE is non-zero
1666 - Evaluate expression and store the result in B->val
1667 - Evaluate the condition if there is one, and store the result
1669 - Update the list of values that must be watched in B->loc.
1671 If the watchpoint disposition is disp_del_at_next_stop, then do
1672 nothing. If this is local watchpoint that is out of scope, delete
1675 Even with `set breakpoint always-inserted on' the watchpoints are
1676 removed + inserted on each stop here. Normal breakpoints must
1677 never be removed because they might be missed by a running thread
1678 when debugging in non-stop mode. On the other hand, hardware
1679 watchpoints (is_hardware_watchpoint; processed here) are specific
1680 to each LWP since they are stored in each LWP's hardware debug
1681 registers. Therefore, such LWP must be stopped first in order to
1682 be able to modify its hardware watchpoints.
1684 Hardware watchpoints must be reset exactly once after being
1685 presented to the user. It cannot be done sooner, because it would
1686 reset the data used to present the watchpoint hit to the user. And
1687 it must not be done later because it could display the same single
1688 watchpoint hit during multiple GDB stops. Note that the latter is
1689 relevant only to the hardware watchpoint types bp_read_watchpoint
1690 and bp_access_watchpoint. False hit by bp_hardware_watchpoint is
1691 not user-visible - its hit is suppressed if the memory content has
1694 The following constraints influence the location where we can reset
1695 hardware watchpoints:
1697 * target_stopped_by_watchpoint and target_stopped_data_address are
1698 called several times when GDB stops.
1701 * Multiple hardware watchpoints can be hit at the same time,
1702 causing GDB to stop. GDB only presents one hardware watchpoint
1703 hit at a time as the reason for stopping, and all the other hits
1704 are presented later, one after the other, each time the user
1705 requests the execution to be resumed. Execution is not resumed
1706 for the threads still having pending hit event stored in
1707 LWP_INFO->STATUS. While the watchpoint is already removed from
1708 the inferior on the first stop the thread hit event is kept being
1709 reported from its cached value by linux_nat_stopped_data_address
1710 until the real thread resume happens after the watchpoint gets
1711 presented and thus its LWP_INFO->STATUS gets reset.
1713 Therefore the hardware watchpoint hit can get safely reset on the
1714 watchpoint removal from inferior. */
1717 update_watchpoint (struct watchpoint *b, int reparse)
1719 int within_current_scope;
1720 struct frame_id saved_frame_id;
1723 /* If this is a local watchpoint, we only want to check if the
1724 watchpoint frame is in scope if the current thread is the thread
1725 that was used to create the watchpoint. */
1726 if (!watchpoint_in_thread_scope (b))
1729 if (b->base.disposition == disp_del_at_next_stop)
1734 /* Determine if the watchpoint is within scope. */
1735 if (b->exp_valid_block == NULL)
1736 within_current_scope = 1;
1739 struct frame_info *fi = get_current_frame ();
1740 struct gdbarch *frame_arch = get_frame_arch (fi);
1741 CORE_ADDR frame_pc = get_frame_pc (fi);
1743 /* If we're in a function epilogue, unwinding may not work
1744 properly, so do not attempt to recreate locations at this
1745 point. See similar comments in watchpoint_check. */
1746 if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
1749 /* Save the current frame's ID so we can restore it after
1750 evaluating the watchpoint expression on its own frame. */
1751 /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
1752 took a frame parameter, so that we didn't have to change the
1755 saved_frame_id = get_frame_id (get_selected_frame (NULL));
1757 fi = frame_find_by_id (b->watchpoint_frame);
1758 within_current_scope = (fi != NULL);
1759 if (within_current_scope)
1763 /* We don't free locations. They are stored in the bp_location array
1764 and update_global_location_list will eventually delete them and
1765 remove breakpoints if needed. */
1768 if (within_current_scope && reparse)
1777 s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string;
1778 b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0);
1779 /* If the meaning of expression itself changed, the old value is
1780 no longer relevant. We don't want to report a watchpoint hit
1781 to the user when the old value and the new value may actually
1782 be completely different objects. */
1783 value_free (b->val);
1787 /* Note that unlike with breakpoints, the watchpoint's condition
1788 expression is stored in the breakpoint object, not in the
1789 locations (re)created below. */
1790 if (b->base.cond_string != NULL)
1792 if (b->cond_exp != NULL)
1794 xfree (b->cond_exp);
1798 s = b->base.cond_string;
1799 b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0);
1803 /* If we failed to parse the expression, for example because
1804 it refers to a global variable in a not-yet-loaded shared library,
1805 don't try to insert watchpoint. We don't automatically delete
1806 such watchpoint, though, since failure to parse expression
1807 is different from out-of-scope watchpoint. */
1808 if ( !target_has_execution)
1810 /* Without execution, memory can't change. No use to try and
1811 set watchpoint locations. The watchpoint will be reset when
1812 the target gains execution, through breakpoint_re_set. */
1814 else if (within_current_scope && b->exp)
1817 struct value *val_chain, *v, *result, *next;
1818 struct program_space *frame_pspace;
1820 fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain);
1822 /* Avoid setting b->val if it's already set. The meaning of
1823 b->val is 'the last value' user saw, and we should update
1824 it only if we reported that last value to user. As it
1825 happens, the code that reports it updates b->val directly.
1826 We don't keep track of the memory value for masked
1828 if (!b->val_valid && !is_masked_watchpoint (&b->base))
1834 frame_pspace = get_frame_program_space (get_selected_frame (NULL));
1836 /* Look at each value on the value chain. */
1837 for (v = val_chain; v; v = value_next (v))
1839 /* If it's a memory location, and GDB actually needed
1840 its contents to evaluate the expression, then we
1841 must watch it. If the first value returned is
1842 still lazy, that means an error occurred reading it;
1843 watch it anyway in case it becomes readable. */
1844 if (VALUE_LVAL (v) == lval_memory
1845 && (v == val_chain || ! value_lazy (v)))
1847 struct type *vtype = check_typedef (value_type (v));
1849 /* We only watch structs and arrays if user asked
1850 for it explicitly, never if they just happen to
1851 appear in the middle of some value chain. */
1853 || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
1854 && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
1858 struct bp_location *loc, **tmp;
1860 addr = value_address (v);
1862 if (b->base.type == bp_read_watchpoint)
1864 else if (b->base.type == bp_access_watchpoint)
1867 loc = allocate_bp_location (&b->base);
1868 for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next))
1871 loc->gdbarch = get_type_arch (value_type (v));
1873 loc->pspace = frame_pspace;
1874 loc->address = addr;
1875 loc->length = TYPE_LENGTH (value_type (v));
1876 loc->watchpoint_type = type;
1881 /* Change the type of breakpoint between hardware assisted or
1882 an ordinary watchpoint depending on the hardware support
1883 and free hardware slots. REPARSE is set when the inferior
1888 enum bp_loc_type loc_type;
1889 struct bp_location *bl;
1891 reg_cnt = can_use_hardware_watchpoint (val_chain);
1895 int i, target_resources_ok, other_type_used;
1898 /* Use an exact watchpoint when there's only one memory region to be
1899 watched, and only one debug register is needed to watch it. */
1900 b->exact = target_exact_watchpoints && reg_cnt == 1;
1902 /* We need to determine how many resources are already
1903 used for all other hardware watchpoints plus this one
1904 to see if we still have enough resources to also fit
1905 this watchpoint in as well. */
1907 /* If this is a software watchpoint, we try to turn it
1908 to a hardware one -- count resources as if B was of
1909 hardware watchpoint type. */
1910 type = b->base.type;
1911 if (type == bp_watchpoint)
1912 type = bp_hardware_watchpoint;
1914 /* This watchpoint may or may not have been placed on
1915 the list yet at this point (it won't be in the list
1916 if we're trying to create it for the first time,
1917 through watch_command), so always account for it
1920 /* Count resources used by all watchpoints except B. */
1921 i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used);
1923 /* Add in the resources needed for B. */
1924 i += hw_watchpoint_use_count (&b->base);
1927 = target_can_use_hardware_watchpoint (type, i, other_type_used);
1928 if (target_resources_ok <= 0)
1930 int sw_mode = b->base.ops->works_in_software_mode (&b->base);
1932 if (target_resources_ok == 0 && !sw_mode)
1933 error (_("Target does not support this type of "
1934 "hardware watchpoint."));
1935 else if (target_resources_ok < 0 && !sw_mode)
1936 error (_("There are not enough available hardware "
1937 "resources for this watchpoint."));
1939 /* Downgrade to software watchpoint. */
1940 b->base.type = bp_watchpoint;
1944 /* If this was a software watchpoint, we've just
1945 found we have enough resources to turn it to a
1946 hardware watchpoint. Otherwise, this is a
1948 b->base.type = type;
1951 else if (!b->base.ops->works_in_software_mode (&b->base))
1952 error (_("Expression cannot be implemented with "
1953 "read/access watchpoint."));
1955 b->base.type = bp_watchpoint;
1957 loc_type = (b->base.type == bp_watchpoint? bp_loc_other
1958 : bp_loc_hardware_watchpoint);
1959 for (bl = b->base.loc; bl; bl = bl->next)
1960 bl->loc_type = loc_type;
1963 for (v = val_chain; v; v = next)
1965 next = value_next (v);
1970 /* If a software watchpoint is not watching any memory, then the
1971 above left it without any location set up. But,
1972 bpstat_stop_status requires a location to be able to report
1973 stops, so make sure there's at least a dummy one. */
1974 if (b->base.type == bp_watchpoint && b->base.loc == NULL)
1976 struct breakpoint *base = &b->base;
1977 base->loc = allocate_bp_location (base);
1978 base->loc->pspace = frame_pspace;
1979 base->loc->address = -1;
1980 base->loc->length = -1;
1981 base->loc->watchpoint_type = -1;
1984 else if (!within_current_scope)
1986 printf_filtered (_("\
1987 Watchpoint %d deleted because the program has left the block\n\
1988 in which its expression is valid.\n"),
1990 watchpoint_del_at_next_stop (b);
1993 /* Restore the selected frame. */
1995 select_frame (frame_find_by_id (saved_frame_id));
1999 /* Returns 1 iff breakpoint location should be
2000 inserted in the inferior. We don't differentiate the type of BL's owner
2001 (breakpoint vs. tracepoint), although insert_location in tracepoint's
2002 breakpoint_ops is not defined, because in insert_bp_location,
2003 tracepoint's insert_location will not be called. */
2005 should_be_inserted (struct bp_location *bl)
2007 if (bl->owner == NULL || !breakpoint_enabled (bl->owner))
2010 if (bl->owner->disposition == disp_del_at_next_stop)
2013 if (!bl->enabled || bl->shlib_disabled || bl->duplicate)
2016 if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup)
2019 /* This is set for example, when we're attached to the parent of a
2020 vfork, and have detached from the child. The child is running
2021 free, and we expect it to do an exec or exit, at which point the
2022 OS makes the parent schedulable again (and the target reports
2023 that the vfork is done). Until the child is done with the shared
2024 memory region, do not insert breakpoints in the parent, otherwise
2025 the child could still trip on the parent's breakpoints. Since
2026 the parent is blocked anyway, it won't miss any breakpoint. */
2027 if (bl->pspace->breakpoints_not_allowed)
2033 /* Same as should_be_inserted but does the check assuming
2034 that the location is not duplicated. */
2037 unduplicated_should_be_inserted (struct bp_location *bl)
2040 const int save_duplicate = bl->duplicate;
2043 result = should_be_inserted (bl);
2044 bl->duplicate = save_duplicate;
2048 /* Parses a conditional described by an expression COND into an
2049 agent expression bytecode suitable for evaluation
2050 by the bytecode interpreter. Return NULL if there was
2051 any error during parsing. */
2053 static struct agent_expr *
2054 parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond)
2056 struct agent_expr *aexpr = NULL;
2057 struct cleanup *old_chain = NULL;
2058 volatile struct gdb_exception ex;
2063 /* We don't want to stop processing, so catch any errors
2064 that may show up. */
2065 TRY_CATCH (ex, RETURN_MASK_ERROR)
2067 aexpr = gen_eval_for_expr (scope, cond);
2072 /* If we got here, it means the condition could not be parsed to a valid
2073 bytecode expression and thus can't be evaluated on the target's side.
2074 It's no use iterating through the conditions. */
2078 /* We have a valid agent expression. */
2082 /* Based on location BL, create a list of breakpoint conditions to be
2083 passed on to the target. If we have duplicated locations with different
2084 conditions, we will add such conditions to the list. The idea is that the
2085 target will evaluate the list of conditions and will only notify GDB when
2086 one of them is true. */
2089 build_target_condition_list (struct bp_location *bl)
2091 struct bp_location **locp = NULL, **loc2p;
2092 int null_condition_or_parse_error = 0;
2093 int modified = bl->needs_update;
2094 struct bp_location *loc;
2096 /* This is only meaningful if the target is
2097 evaluating conditions and if the user has
2098 opted for condition evaluation on the target's
2100 if (gdb_evaluates_breakpoint_condition_p ()
2101 || !target_supports_evaluation_of_breakpoint_conditions ())
2104 /* Do a first pass to check for locations with no assigned
2105 conditions or conditions that fail to parse to a valid agent expression
2106 bytecode. If any of these happen, then it's no use to send conditions
2107 to the target since this location will always trigger and generate a
2108 response back to GDB. */
2109 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2112 if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
2116 struct agent_expr *aexpr;
2118 /* Re-parse the conditions since something changed. In that
2119 case we already freed the condition bytecodes (see
2120 force_breakpoint_reinsertion). We just
2121 need to parse the condition to bytecodes again. */
2122 aexpr = parse_cond_to_aexpr (bl->address, loc->cond);
2123 loc->cond_bytecode = aexpr;
2125 /* Check if we managed to parse the conditional expression
2126 correctly. If not, we will not send this condition
2132 /* If we have a NULL bytecode expression, it means something
2133 went wrong or we have a null condition expression. */
2134 if (!loc->cond_bytecode)
2136 null_condition_or_parse_error = 1;
2142 /* If any of these happened, it means we will have to evaluate the conditions
2143 for the location's address on gdb's side. It is no use keeping bytecodes
2144 for all the other duplicate locations, thus we free all of them here.
2146 This is so we have a finer control over which locations' conditions are
2147 being evaluated by GDB or the remote stub. */
2148 if (null_condition_or_parse_error)
2150 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2153 if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
2155 /* Only go as far as the first NULL bytecode is
2157 if (!loc->cond_bytecode)
2160 free_agent_expr (loc->cond_bytecode);
2161 loc->cond_bytecode = NULL;
2166 /* No NULL conditions or failed bytecode generation. Build a condition list
2167 for this location's address. */
2168 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2172 && is_breakpoint (loc->owner)
2173 && loc->pspace->num == bl->pspace->num
2174 && loc->owner->enable_state == bp_enabled
2176 /* Add the condition to the vector. This will be used later to send the
2177 conditions to the target. */
2178 VEC_safe_push (agent_expr_p, bl->target_info.conditions,
2179 loc->cond_bytecode);
2185 /* Parses a command described by string CMD into an agent expression
2186 bytecode suitable for evaluation by the bytecode interpreter.
2187 Return NULL if there was any error during parsing. */
2189 static struct agent_expr *
2190 parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd)
2192 struct cleanup *old_cleanups = 0;
2193 struct expression *expr, **argvec;
2194 struct agent_expr *aexpr = NULL;
2195 struct cleanup *old_chain = NULL;
2196 volatile struct gdb_exception ex;
2198 char *format_start, *format_end;
2199 struct format_piece *fpieces;
2201 struct gdbarch *gdbarch = get_current_arch ();
2208 if (*cmdrest == ',')
2210 cmdrest = skip_spaces (cmdrest);
2212 if (*cmdrest++ != '"')
2213 error (_("No format string following the location"));
2215 format_start = cmdrest;
2217 fpieces = parse_format_string (&cmdrest);
2219 old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces);
2221 format_end = cmdrest;
2223 if (*cmdrest++ != '"')
2224 error (_("Bad format string, non-terminated '\"'."));
2226 cmdrest = skip_spaces (cmdrest);
2228 if (!(*cmdrest == ',' || *cmdrest == '\0'))
2229 error (_("Invalid argument syntax"));
2231 if (*cmdrest == ',')
2233 cmdrest = skip_spaces (cmdrest);
2235 /* For each argument, make an expression. */
2237 argvec = (struct expression **) alloca (strlen (cmd)
2238 * sizeof (struct expression *));
2241 while (*cmdrest != '\0')
2246 expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1);
2247 argvec[nargs++] = expr;
2249 if (*cmdrest == ',')
2253 /* We don't want to stop processing, so catch any errors
2254 that may show up. */
2255 TRY_CATCH (ex, RETURN_MASK_ERROR)
2257 aexpr = gen_printf (scope, gdbarch, 0, 0,
2258 format_start, format_end - format_start,
2259 fpieces, nargs, argvec);
2264 /* If we got here, it means the command could not be parsed to a valid
2265 bytecode expression and thus can't be evaluated on the target's side.
2266 It's no use iterating through the other commands. */
2270 do_cleanups (old_cleanups);
2272 /* We have a valid agent expression, return it. */
2276 /* Based on location BL, create a list of breakpoint commands to be
2277 passed on to the target. If we have duplicated locations with
2278 different commands, we will add any such to the list. */
2281 build_target_command_list (struct bp_location *bl)
2283 struct bp_location **locp = NULL, **loc2p;
2284 int null_command_or_parse_error = 0;
2285 int modified = bl->needs_update;
2286 struct bp_location *loc;
2288 /* For now, limit to agent-style dprintf breakpoints. */
2289 if (bl->owner->type != bp_dprintf
2290 || strcmp (dprintf_style, dprintf_style_agent) != 0)
2293 if (!target_can_run_breakpoint_commands ())
2296 /* Do a first pass to check for locations with no assigned
2297 conditions or conditions that fail to parse to a valid agent expression
2298 bytecode. If any of these happen, then it's no use to send conditions
2299 to the target since this location will always trigger and generate a
2300 response back to GDB. */
2301 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2304 if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
2308 struct agent_expr *aexpr;
2310 /* Re-parse the commands since something changed. In that
2311 case we already freed the command bytecodes (see
2312 force_breakpoint_reinsertion). We just
2313 need to parse the command to bytecodes again. */
2314 aexpr = parse_cmd_to_aexpr (bl->address,
2315 loc->owner->extra_string);
2316 loc->cmd_bytecode = aexpr;
2322 /* If we have a NULL bytecode expression, it means something
2323 went wrong or we have a null command expression. */
2324 if (!loc->cmd_bytecode)
2326 null_command_or_parse_error = 1;
2332 /* If anything failed, then we're not doing target-side commands,
2334 if (null_command_or_parse_error)
2336 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2339 if (is_breakpoint (loc->owner)
2340 && loc->pspace->num == bl->pspace->num)
2342 /* Only go as far as the first NULL bytecode is
2344 if (!loc->cond_bytecode)
2347 free_agent_expr (loc->cond_bytecode);
2348 loc->cond_bytecode = NULL;
2353 /* No NULL commands or failed bytecode generation. Build a command list
2354 for this location's address. */
2355 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
2358 if (loc->owner->extra_string
2359 && is_breakpoint (loc->owner)
2360 && loc->pspace->num == bl->pspace->num
2361 && loc->owner->enable_state == bp_enabled
2363 /* Add the command to the vector. This will be used later
2364 to send the commands to the target. */
2365 VEC_safe_push (agent_expr_p, bl->target_info.tcommands,
2369 bl->target_info.persist = 0;
2370 /* Maybe flag this location as persistent. */
2371 if (bl->owner->type == bp_dprintf && disconnected_dprintf)
2372 bl->target_info.persist = 1;
2375 /* Insert a low-level "breakpoint" of some type. BL is the breakpoint
2376 location. Any error messages are printed to TMP_ERROR_STREAM; and
2377 DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems.
2378 Returns 0 for success, 1 if the bp_location type is not supported or
2381 NOTE drow/2003-09-09: This routine could be broken down to an
2382 object-style method for each breakpoint or catchpoint type. */
2384 insert_bp_location (struct bp_location *bl,
2385 struct ui_file *tmp_error_stream,
2386 int *disabled_breaks,
2387 int *hw_breakpoint_error,
2388 int *hw_bp_error_explained_already)
2391 char *hw_bp_err_string = NULL;
2392 struct gdb_exception e;
2394 if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update))
2397 /* Note we don't initialize bl->target_info, as that wipes out
2398 the breakpoint location's shadow_contents if the breakpoint
2399 is still inserted at that location. This in turn breaks
2400 target_read_memory which depends on these buffers when
2401 a memory read is requested at the breakpoint location:
2402 Once the target_info has been wiped, we fail to see that
2403 we have a breakpoint inserted at that address and thus
2404 read the breakpoint instead of returning the data saved in
2405 the breakpoint location's shadow contents. */
2406 bl->target_info.placed_address = bl->address;
2407 bl->target_info.placed_address_space = bl->pspace->aspace;
2408 bl->target_info.length = bl->length;
2410 /* When working with target-side conditions, we must pass all the conditions
2411 for the same breakpoint address down to the target since GDB will not
2412 insert those locations. With a list of breakpoint conditions, the target
2413 can decide when to stop and notify GDB. */
2415 if (is_breakpoint (bl->owner))
2417 build_target_condition_list (bl);
2418 build_target_command_list (bl);
2419 /* Reset the modification marker. */
2420 bl->needs_update = 0;
2423 if (bl->loc_type == bp_loc_software_breakpoint
2424 || bl->loc_type == bp_loc_hardware_breakpoint)
2426 if (bl->owner->type != bp_hardware_breakpoint)
2428 /* If the explicitly specified breakpoint type
2429 is not hardware breakpoint, check the memory map to see
2430 if the breakpoint address is in read only memory or not.
2432 Two important cases are:
2433 - location type is not hardware breakpoint, memory
2434 is readonly. We change the type of the location to
2435 hardware breakpoint.
2436 - location type is hardware breakpoint, memory is
2437 read-write. This means we've previously made the
2438 location hardware one, but then the memory map changed,
2441 When breakpoints are removed, remove_breakpoints will use
2442 location types we've just set here, the only possible
2443 problem is that memory map has changed during running
2444 program, but it's not going to work anyway with current
2446 struct mem_region *mr
2447 = lookup_mem_region (bl->target_info.placed_address);
2451 if (automatic_hardware_breakpoints)
2453 enum bp_loc_type new_type;
2455 if (mr->attrib.mode != MEM_RW)
2456 new_type = bp_loc_hardware_breakpoint;
2458 new_type = bp_loc_software_breakpoint;
2460 if (new_type != bl->loc_type)
2462 static int said = 0;
2464 bl->loc_type = new_type;
2467 fprintf_filtered (gdb_stdout,
2468 _("Note: automatically using "
2469 "hardware breakpoints for "
2470 "read-only addresses.\n"));
2475 else if (bl->loc_type == bp_loc_software_breakpoint
2476 && mr->attrib.mode != MEM_RW)
2477 warning (_("cannot set software breakpoint "
2478 "at readonly address %s"),
2479 paddress (bl->gdbarch, bl->address));
2483 /* First check to see if we have to handle an overlay. */
2484 if (overlay_debugging == ovly_off
2485 || bl->section == NULL
2486 || !(section_is_overlay (bl->section)))
2488 /* No overlay handling: just set the breakpoint. */
2489 TRY_CATCH (e, RETURN_MASK_ALL)
2491 val = bl->owner->ops->insert_location (bl);
2496 hw_bp_err_string = (char *) e.message;
2501 /* This breakpoint is in an overlay section.
2502 Shall we set a breakpoint at the LMA? */
2503 if (!overlay_events_enabled)
2505 /* Yes -- overlay event support is not active,
2506 so we must try to set a breakpoint at the LMA.
2507 This will not work for a hardware breakpoint. */
2508 if (bl->loc_type == bp_loc_hardware_breakpoint)
2509 warning (_("hardware breakpoint %d not supported in overlay!"),
2513 CORE_ADDR addr = overlay_unmapped_address (bl->address,
2515 /* Set a software (trap) breakpoint at the LMA. */
2516 bl->overlay_target_info = bl->target_info;
2517 bl->overlay_target_info.placed_address = addr;
2518 val = target_insert_breakpoint (bl->gdbarch,
2519 &bl->overlay_target_info);
2521 fprintf_unfiltered (tmp_error_stream,
2522 "Overlay breakpoint %d "
2523 "failed: in ROM?\n",
2527 /* Shall we set a breakpoint at the VMA? */
2528 if (section_is_mapped (bl->section))
2530 /* Yes. This overlay section is mapped into memory. */
2531 TRY_CATCH (e, RETURN_MASK_ALL)
2533 val = bl->owner->ops->insert_location (bl);
2538 hw_bp_err_string = (char *) e.message;
2543 /* No. This breakpoint will not be inserted.
2544 No error, but do not mark the bp as 'inserted'. */
2551 /* Can't set the breakpoint. */
2552 if (solib_name_from_address (bl->pspace, bl->address))
2554 /* See also: disable_breakpoints_in_shlibs. */
2556 bl->shlib_disabled = 1;
2557 observer_notify_breakpoint_modified (bl->owner);
2558 if (!*disabled_breaks)
2560 fprintf_unfiltered (tmp_error_stream,
2561 "Cannot insert breakpoint %d.\n",
2563 fprintf_unfiltered (tmp_error_stream,
2564 "Temporarily disabling shared "
2565 "library breakpoints:\n");
2567 *disabled_breaks = 1;
2568 fprintf_unfiltered (tmp_error_stream,
2569 "breakpoint #%d\n", bl->owner->number);
2573 if (bl->loc_type == bp_loc_hardware_breakpoint)
2575 *hw_breakpoint_error = 1;
2576 *hw_bp_error_explained_already = hw_bp_err_string != NULL;
2577 fprintf_unfiltered (tmp_error_stream,
2578 "Cannot insert hardware breakpoint %d%s",
2579 bl->owner->number, hw_bp_err_string ? ":" : ".\n");
2580 if (hw_bp_err_string)
2581 fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string);
2585 fprintf_unfiltered (tmp_error_stream,
2586 "Cannot insert breakpoint %d.\n",
2588 fprintf_filtered (tmp_error_stream,
2589 "Error accessing memory address ");
2590 fputs_filtered (paddress (bl->gdbarch, bl->address),
2592 fprintf_filtered (tmp_error_stream, ": %s.\n",
2593 safe_strerror (val));
2604 else if (bl->loc_type == bp_loc_hardware_watchpoint
2605 /* NOTE drow/2003-09-08: This state only exists for removing
2606 watchpoints. It's not clear that it's necessary... */
2607 && bl->owner->disposition != disp_del_at_next_stop)
2609 gdb_assert (bl->owner->ops != NULL
2610 && bl->owner->ops->insert_location != NULL);
2612 val = bl->owner->ops->insert_location (bl);
2614 /* If trying to set a read-watchpoint, and it turns out it's not
2615 supported, try emulating one with an access watchpoint. */
2616 if (val == 1 && bl->watchpoint_type == hw_read)
2618 struct bp_location *loc, **loc_temp;
2620 /* But don't try to insert it, if there's already another
2621 hw_access location that would be considered a duplicate
2623 ALL_BP_LOCATIONS (loc, loc_temp)
2625 && loc->watchpoint_type == hw_access
2626 && watchpoint_locations_match (bl, loc))
2630 bl->target_info = loc->target_info;
2631 bl->watchpoint_type = hw_access;
2638 bl->watchpoint_type = hw_access;
2639 val = bl->owner->ops->insert_location (bl);
2642 /* Back to the original value. */
2643 bl->watchpoint_type = hw_read;
2647 bl->inserted = (val == 0);
2650 else if (bl->owner->type == bp_catchpoint)
2652 gdb_assert (bl->owner->ops != NULL
2653 && bl->owner->ops->insert_location != NULL);
2655 val = bl->owner->ops->insert_location (bl);
2658 bl->owner->enable_state = bp_disabled;
2662 Error inserting catchpoint %d: Your system does not support this type\n\
2663 of catchpoint."), bl->owner->number);
2665 warning (_("Error inserting catchpoint %d."), bl->owner->number);
2668 bl->inserted = (val == 0);
2670 /* We've already printed an error message if there was a problem
2671 inserting this catchpoint, and we've disabled the catchpoint,
2672 so just return success. */
2679 /* This function is called when program space PSPACE is about to be
2680 deleted. It takes care of updating breakpoints to not reference
2684 breakpoint_program_space_exit (struct program_space *pspace)
2686 struct breakpoint *b, *b_temp;
2687 struct bp_location *loc, **loc_temp;
2689 /* Remove any breakpoint that was set through this program space. */
2690 ALL_BREAKPOINTS_SAFE (b, b_temp)
2692 if (b->pspace == pspace)
2693 delete_breakpoint (b);
2696 /* Breakpoints set through other program spaces could have locations
2697 bound to PSPACE as well. Remove those. */
2698 ALL_BP_LOCATIONS (loc, loc_temp)
2700 struct bp_location *tmp;
2702 if (loc->pspace == pspace)
2704 /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
2705 if (loc->owner->loc == loc)
2706 loc->owner->loc = loc->next;
2708 for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next)
2709 if (tmp->next == loc)
2711 tmp->next = loc->next;
2717 /* Now update the global location list to permanently delete the
2718 removed locations above. */
2719 update_global_location_list (0);
2722 /* Make sure all breakpoints are inserted in inferior.
2723 Throws exception on any error.
2724 A breakpoint that is already inserted won't be inserted
2725 again, so calling this function twice is safe. */
2727 insert_breakpoints (void)
2729 struct breakpoint *bpt;
2731 ALL_BREAKPOINTS (bpt)
2732 if (is_hardware_watchpoint (bpt))
2734 struct watchpoint *w = (struct watchpoint *) bpt;
2736 update_watchpoint (w, 0 /* don't reparse. */);
2739 update_global_location_list (1);
2741 /* update_global_location_list does not insert breakpoints when
2742 always_inserted_mode is not enabled. Explicitly insert them
2744 if (!breakpoints_always_inserted_mode ())
2745 insert_breakpoint_locations ();
2748 /* Invoke CALLBACK for each of bp_location. */
2751 iterate_over_bp_locations (walk_bp_location_callback callback)
2753 struct bp_location *loc, **loc_tmp;
2755 ALL_BP_LOCATIONS (loc, loc_tmp)
2757 callback (loc, NULL);
2761 /* This is used when we need to synch breakpoint conditions between GDB and the
2762 target. It is the case with deleting and disabling of breakpoints when using
2763 always-inserted mode. */
2766 update_inserted_breakpoint_locations (void)
2768 struct bp_location *bl, **blp_tmp;
2771 int disabled_breaks = 0;
2772 int hw_breakpoint_error = 0;
2773 int hw_bp_details_reported = 0;
2775 struct ui_file *tmp_error_stream = mem_fileopen ();
2776 struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream);
2778 /* Explicitly mark the warning -- this will only be printed if
2779 there was an error. */
2780 fprintf_unfiltered (tmp_error_stream, "Warning:\n");
2782 save_current_space_and_thread ();
2784 ALL_BP_LOCATIONS (bl, blp_tmp)
2786 /* We only want to update software breakpoints and hardware
2788 if (!is_breakpoint (bl->owner))
2791 /* We only want to update locations that are already inserted
2792 and need updating. This is to avoid unwanted insertion during
2793 deletion of breakpoints. */
2794 if (!bl->inserted || (bl->inserted && !bl->needs_update))
2797 switch_to_program_space_and_thread (bl->pspace);
2799 /* For targets that support global breakpoints, there's no need
2800 to select an inferior to insert breakpoint to. In fact, even
2801 if we aren't attached to any process yet, we should still
2802 insert breakpoints. */
2803 if (!gdbarch_has_global_breakpoints (target_gdbarch ())
2804 && ptid_equal (inferior_ptid, null_ptid))
2807 val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks,
2808 &hw_breakpoint_error, &hw_bp_details_reported);
2815 target_terminal_ours_for_output ();
2816 error_stream (tmp_error_stream);
2819 do_cleanups (cleanups);
2822 /* Used when starting or continuing the program. */
2825 insert_breakpoint_locations (void)
2827 struct breakpoint *bpt;
2828 struct bp_location *bl, **blp_tmp;
2831 int disabled_breaks = 0;
2832 int hw_breakpoint_error = 0;
2833 int hw_bp_error_explained_already = 0;
2835 struct ui_file *tmp_error_stream = mem_fileopen ();
2836 struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream);
2838 /* Explicitly mark the warning -- this will only be printed if
2839 there was an error. */
2840 fprintf_unfiltered (tmp_error_stream, "Warning:\n");
2842 save_current_space_and_thread ();
2844 ALL_BP_LOCATIONS (bl, blp_tmp)
2846 if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update))
2849 /* There is no point inserting thread-specific breakpoints if
2850 the thread no longer exists. ALL_BP_LOCATIONS bp_location
2851 has BL->OWNER always non-NULL. */
2852 if (bl->owner->thread != -1
2853 && !valid_thread_id (bl->owner->thread))
2856 switch_to_program_space_and_thread (bl->pspace);
2858 /* For targets that support global breakpoints, there's no need
2859 to select an inferior to insert breakpoint to. In fact, even
2860 if we aren't attached to any process yet, we should still
2861 insert breakpoints. */
2862 if (!gdbarch_has_global_breakpoints (target_gdbarch ())
2863 && ptid_equal (inferior_ptid, null_ptid))
2866 val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks,
2867 &hw_breakpoint_error, &hw_bp_error_explained_already);
2872 /* If we failed to insert all locations of a watchpoint, remove
2873 them, as half-inserted watchpoint is of limited use. */
2874 ALL_BREAKPOINTS (bpt)
2876 int some_failed = 0;
2877 struct bp_location *loc;
2879 if (!is_hardware_watchpoint (bpt))
2882 if (!breakpoint_enabled (bpt))
2885 if (bpt->disposition == disp_del_at_next_stop)
2888 for (loc = bpt->loc; loc; loc = loc->next)
2889 if (!loc->inserted && should_be_inserted (loc))
2896 for (loc = bpt->loc; loc; loc = loc->next)
2898 remove_breakpoint (loc, mark_uninserted);
2900 hw_breakpoint_error = 1;
2901 fprintf_unfiltered (tmp_error_stream,
2902 "Could not insert hardware watchpoint %d.\n",
2910 /* If a hardware breakpoint or watchpoint was inserted, add a
2911 message about possibly exhausted resources. */
2912 if (hw_breakpoint_error && !hw_bp_error_explained_already)
2914 fprintf_unfiltered (tmp_error_stream,
2915 "Could not insert hardware breakpoints:\n\
2916 You may have requested too many hardware breakpoints/watchpoints.\n");
2918 target_terminal_ours_for_output ();
2919 error_stream (tmp_error_stream);
2922 do_cleanups (cleanups);
2925 /* Used when the program stops.
2926 Returns zero if successful, or non-zero if there was a problem
2927 removing a breakpoint location. */
2930 remove_breakpoints (void)
2932 struct bp_location *bl, **blp_tmp;
2935 ALL_BP_LOCATIONS (bl, blp_tmp)
2937 if (bl->inserted && !is_tracepoint (bl->owner))
2938 val |= remove_breakpoint (bl, mark_uninserted);
2943 /* Remove breakpoints of process PID. */
2946 remove_breakpoints_pid (int pid)
2948 struct bp_location *bl, **blp_tmp;
2950 struct inferior *inf = find_inferior_pid (pid);
2952 ALL_BP_LOCATIONS (bl, blp_tmp)
2954 if (bl->pspace != inf->pspace)
2957 if (bl->owner->type == bp_dprintf)
2962 val = remove_breakpoint (bl, mark_uninserted);
2971 reattach_breakpoints (int pid)
2973 struct cleanup *old_chain;
2974 struct bp_location *bl, **blp_tmp;
2976 struct ui_file *tmp_error_stream;
2977 int dummy1 = 0, dummy2 = 0, dummy3 = 0;
2978 struct inferior *inf;
2979 struct thread_info *tp;
2981 tp = any_live_thread_of_process (pid);
2985 inf = find_inferior_pid (pid);
2986 old_chain = save_inferior_ptid ();
2988 inferior_ptid = tp->ptid;
2990 tmp_error_stream = mem_fileopen ();
2991 make_cleanup_ui_file_delete (tmp_error_stream);
2993 ALL_BP_LOCATIONS (bl, blp_tmp)
2995 if (bl->pspace != inf->pspace)
3001 val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3);
3004 do_cleanups (old_chain);
3009 do_cleanups (old_chain);
3013 static int internal_breakpoint_number = -1;
3015 /* Set the breakpoint number of B, depending on the value of INTERNAL.
3016 If INTERNAL is non-zero, the breakpoint number will be populated
3017 from internal_breakpoint_number and that variable decremented.
3018 Otherwise the breakpoint number will be populated from
3019 breakpoint_count and that value incremented. Internal breakpoints
3020 do not set the internal var bpnum. */
3022 set_breakpoint_number (int internal, struct breakpoint *b)
3025 b->number = internal_breakpoint_number--;
3028 set_breakpoint_count (breakpoint_count + 1);
3029 b->number = breakpoint_count;
3033 static struct breakpoint *
3034 create_internal_breakpoint (struct gdbarch *gdbarch,
3035 CORE_ADDR address, enum bptype type,
3036 const struct breakpoint_ops *ops)
3038 struct symtab_and_line sal;
3039 struct breakpoint *b;
3041 init_sal (&sal); /* Initialize to zeroes. */
3044 sal.section = find_pc_overlay (sal.pc);
3045 sal.pspace = current_program_space;
3047 b = set_raw_breakpoint (gdbarch, sal, type, ops);
3048 b->number = internal_breakpoint_number--;
3049 b->disposition = disp_donttouch;
3054 static const char *const longjmp_names[] =
3056 "longjmp", "_longjmp", "siglongjmp", "_siglongjmp"
3058 #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names)
3060 /* Per-objfile data private to breakpoint.c. */
3061 struct breakpoint_objfile_data
3063 /* Minimal symbol for "_ovly_debug_event" (if any). */
3064 struct minimal_symbol *overlay_msym;
3066 /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */
3067 struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES];
3069 /* True if we have looked for longjmp probes. */
3070 int longjmp_searched;
3072 /* SystemTap probe points for longjmp (if any). */
3073 VEC (probe_p) *longjmp_probes;
3075 /* Minimal symbol for "std::terminate()" (if any). */
3076 struct minimal_symbol *terminate_msym;
3078 /* Minimal symbol for "_Unwind_DebugHook" (if any). */
3079 struct minimal_symbol *exception_msym;
3081 /* True if we have looked for exception probes. */
3082 int exception_searched;
3084 /* SystemTap probe points for unwinding (if any). */
3085 VEC (probe_p) *exception_probes;
3088 static const struct objfile_data *breakpoint_objfile_key;
3090 /* Minimal symbol not found sentinel. */
3091 static struct minimal_symbol msym_not_found;
3093 /* Returns TRUE if MSYM point to the "not found" sentinel. */
3096 msym_not_found_p (const struct minimal_symbol *msym)
3098 return msym == &msym_not_found;
3101 /* Return per-objfile data needed by breakpoint.c.
3102 Allocate the data if necessary. */
3104 static struct breakpoint_objfile_data *
3105 get_breakpoint_objfile_data (struct objfile *objfile)
3107 struct breakpoint_objfile_data *bp_objfile_data;
3109 bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key);
3110 if (bp_objfile_data == NULL)
3112 bp_objfile_data = obstack_alloc (&objfile->objfile_obstack,
3113 sizeof (*bp_objfile_data));
3115 memset (bp_objfile_data, 0, sizeof (*bp_objfile_data));
3116 set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
3118 return bp_objfile_data;
3122 free_breakpoint_probes (struct objfile *obj, void *data)
3124 struct breakpoint_objfile_data *bp_objfile_data = data;
3126 VEC_free (probe_p, bp_objfile_data->longjmp_probes);
3127 VEC_free (probe_p, bp_objfile_data->exception_probes);
3131 create_overlay_event_breakpoint (void)
3133 struct objfile *objfile;
3134 const char *const func_name = "_ovly_debug_event";
3136 ALL_OBJFILES (objfile)
3138 struct breakpoint *b;
3139 struct breakpoint_objfile_data *bp_objfile_data;
3142 bp_objfile_data = get_breakpoint_objfile_data (objfile);
3144 if (msym_not_found_p (bp_objfile_data->overlay_msym))
3147 if (bp_objfile_data->overlay_msym == NULL)
3149 struct minimal_symbol *m;
3151 m = lookup_minimal_symbol_text (func_name, objfile);
3154 /* Avoid future lookups in this objfile. */
3155 bp_objfile_data->overlay_msym = &msym_not_found;
3158 bp_objfile_data->overlay_msym = m;
3161 addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym);
3162 b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
3164 &internal_breakpoint_ops);
3165 b->addr_string = xstrdup (func_name);
3167 if (overlay_debugging == ovly_auto)
3169 b->enable_state = bp_enabled;
3170 overlay_events_enabled = 1;
3174 b->enable_state = bp_disabled;
3175 overlay_events_enabled = 0;
3178 update_global_location_list (1);
3182 create_longjmp_master_breakpoint (void)
3184 struct program_space *pspace;
3185 struct cleanup *old_chain;
3187 old_chain = save_current_program_space ();
3189 ALL_PSPACES (pspace)
3191 struct objfile *objfile;
3193 set_current_program_space (pspace);
3195 ALL_OBJFILES (objfile)
3198 struct gdbarch *gdbarch;
3199 struct breakpoint_objfile_data *bp_objfile_data;
3201 gdbarch = get_objfile_arch (objfile);
3202 if (!gdbarch_get_longjmp_target_p (gdbarch))
3205 bp_objfile_data = get_breakpoint_objfile_data (objfile);
3207 if (!bp_objfile_data->longjmp_searched)
3209 bp_objfile_data->longjmp_probes
3210 = find_probes_in_objfile (objfile, "libc", "longjmp");
3211 bp_objfile_data->longjmp_searched = 1;
3214 if (bp_objfile_data->longjmp_probes != NULL)
3217 struct probe *probe;
3218 struct gdbarch *gdbarch = get_objfile_arch (objfile);
3221 VEC_iterate (probe_p,
3222 bp_objfile_data->longjmp_probes,
3226 struct breakpoint *b;
3228 b = create_internal_breakpoint (gdbarch, probe->address,
3230 &internal_breakpoint_ops);
3231 b->addr_string = xstrdup ("-probe-stap libc:longjmp");
3232 b->enable_state = bp_disabled;
3238 for (i = 0; i < NUM_LONGJMP_NAMES; i++)
3240 struct breakpoint *b;
3241 const char *func_name;
3244 if (msym_not_found_p (bp_objfile_data->longjmp_msym[i]))
3247 func_name = longjmp_names[i];
3248 if (bp_objfile_data->longjmp_msym[i] == NULL)
3250 struct minimal_symbol *m;
3252 m = lookup_minimal_symbol_text (func_name, objfile);
3255 /* Prevent future lookups in this objfile. */
3256 bp_objfile_data->longjmp_msym[i] = &msym_not_found;
3259 bp_objfile_data->longjmp_msym[i] = m;
3262 addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
3263 b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master,
3264 &internal_breakpoint_ops);
3265 b->addr_string = xstrdup (func_name);
3266 b->enable_state = bp_disabled;
3270 update_global_location_list (1);
3272 do_cleanups (old_chain);
3275 /* Create a master std::terminate breakpoint. */
3277 create_std_terminate_master_breakpoint (void)
3279 struct program_space *pspace;
3280 struct cleanup *old_chain;
3281 const char *const func_name = "std::terminate()";
3283 old_chain = save_current_program_space ();
3285 ALL_PSPACES (pspace)
3287 struct objfile *objfile;
3290 set_current_program_space (pspace);
3292 ALL_OBJFILES (objfile)
3294 struct breakpoint *b;
3295 struct breakpoint_objfile_data *bp_objfile_data;
3297 bp_objfile_data = get_breakpoint_objfile_data (objfile);
3299 if (msym_not_found_p (bp_objfile_data->terminate_msym))
3302 if (bp_objfile_data->terminate_msym == NULL)
3304 struct minimal_symbol *m;
3306 m = lookup_minimal_symbol (func_name, NULL, objfile);
3307 if (m == NULL || (MSYMBOL_TYPE (m) != mst_text
3308 && MSYMBOL_TYPE (m) != mst_file_text))
3310 /* Prevent future lookups in this objfile. */
3311 bp_objfile_data->terminate_msym = &msym_not_found;
3314 bp_objfile_data->terminate_msym = m;
3317 addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym);
3318 b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
3319 bp_std_terminate_master,
3320 &internal_breakpoint_ops);
3321 b->addr_string = xstrdup (func_name);
3322 b->enable_state = bp_disabled;
3326 update_global_location_list (1);
3328 do_cleanups (old_chain);
3331 /* Install a master breakpoint on the unwinder's debug hook. */
3334 create_exception_master_breakpoint (void)
3336 struct objfile *objfile;
3337 const char *const func_name = "_Unwind_DebugHook";
3339 ALL_OBJFILES (objfile)
3341 struct breakpoint *b;
3342 struct gdbarch *gdbarch;
3343 struct breakpoint_objfile_data *bp_objfile_data;
3346 bp_objfile_data = get_breakpoint_objfile_data (objfile);
3348 /* We prefer the SystemTap probe point if it exists. */
3349 if (!bp_objfile_data->exception_searched)
3351 bp_objfile_data->exception_probes
3352 = find_probes_in_objfile (objfile, "libgcc", "unwind");
3353 bp_objfile_data->exception_searched = 1;
3356 if (bp_objfile_data->exception_probes != NULL)
3358 struct gdbarch *gdbarch = get_objfile_arch (objfile);
3360 struct probe *probe;
3363 VEC_iterate (probe_p,
3364 bp_objfile_data->exception_probes,
3368 struct breakpoint *b;
3370 b = create_internal_breakpoint (gdbarch, probe->address,
3371 bp_exception_master,
3372 &internal_breakpoint_ops);
3373 b->addr_string = xstrdup ("-probe-stap libgcc:unwind");
3374 b->enable_state = bp_disabled;
3380 /* Otherwise, try the hook function. */
3382 if (msym_not_found_p (bp_objfile_data->exception_msym))
3385 gdbarch = get_objfile_arch (objfile);
3387 if (bp_objfile_data->exception_msym == NULL)
3389 struct minimal_symbol *debug_hook;
3391 debug_hook = lookup_minimal_symbol (func_name, NULL, objfile);
3392 if (debug_hook == NULL)
3394 bp_objfile_data->exception_msym = &msym_not_found;
3398 bp_objfile_data->exception_msym = debug_hook;
3401 addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
3402 addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
3404 b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
3405 &internal_breakpoint_ops);
3406 b->addr_string = xstrdup (func_name);
3407 b->enable_state = bp_disabled;
3410 update_global_location_list (1);
3414 update_breakpoints_after_exec (void)
3416 struct breakpoint *b, *b_tmp;
3417 struct bp_location *bploc, **bplocp_tmp;
3419 /* We're about to delete breakpoints from GDB's lists. If the
3420 INSERTED flag is true, GDB will try to lift the breakpoints by
3421 writing the breakpoints' "shadow contents" back into memory. The
3422 "shadow contents" are NOT valid after an exec, so GDB should not
3423 do that. Instead, the target is responsible from marking
3424 breakpoints out as soon as it detects an exec. We don't do that
3425 here instead, because there may be other attempts to delete
3426 breakpoints after detecting an exec and before reaching here. */
3427 ALL_BP_LOCATIONS (bploc, bplocp_tmp)
3428 if (bploc->pspace == current_program_space)
3429 gdb_assert (!bploc->inserted);
3431 ALL_BREAKPOINTS_SAFE (b, b_tmp)
3433 if (b->pspace != current_program_space)
3436 /* Solib breakpoints must be explicitly reset after an exec(). */
3437 if (b->type == bp_shlib_event)
3439 delete_breakpoint (b);
3443 /* JIT breakpoints must be explicitly reset after an exec(). */
3444 if (b->type == bp_jit_event)
3446 delete_breakpoint (b);
3450 /* Thread event breakpoints must be set anew after an exec(),
3451 as must overlay event and longjmp master breakpoints. */
3452 if (b->type == bp_thread_event || b->type == bp_overlay_event
3453 || b->type == bp_longjmp_master || b->type == bp_std_terminate_master
3454 || b->type == bp_exception_master)
3456 delete_breakpoint (b);
3460 /* Step-resume breakpoints are meaningless after an exec(). */
3461 if (b->type == bp_step_resume || b->type == bp_hp_step_resume)
3463 delete_breakpoint (b);
3467 /* Longjmp and longjmp-resume breakpoints are also meaningless
3469 if (b->type == bp_longjmp || b->type == bp_longjmp_resume
3470 || b->type == bp_longjmp_call_dummy
3471 || b->type == bp_exception || b->type == bp_exception_resume)
3473 delete_breakpoint (b);
3477 if (b->type == bp_catchpoint)
3479 /* For now, none of the bp_catchpoint breakpoints need to
3480 do anything at this point. In the future, if some of
3481 the catchpoints need to something, we will need to add
3482 a new method, and call this method from here. */
3486 /* bp_finish is a special case. The only way we ought to be able
3487 to see one of these when an exec() has happened, is if the user
3488 caught a vfork, and then said "finish". Ordinarily a finish just
3489 carries them to the call-site of the current callee, by setting
3490 a temporary bp there and resuming. But in this case, the finish
3491 will carry them entirely through the vfork & exec.
3493 We don't want to allow a bp_finish to remain inserted now. But
3494 we can't safely delete it, 'cause finish_command has a handle to
3495 the bp on a bpstat, and will later want to delete it. There's a
3496 chance (and I've seen it happen) that if we delete the bp_finish
3497 here, that its storage will get reused by the time finish_command
3498 gets 'round to deleting the "use to be a bp_finish" breakpoint.
3499 We really must allow finish_command to delete a bp_finish.
3501 In the absence of a general solution for the "how do we know
3502 it's safe to delete something others may have handles to?"
3503 problem, what we'll do here is just uninsert the bp_finish, and
3504 let finish_command delete it.
3506 (We know the bp_finish is "doomed" in the sense that it's
3507 momentary, and will be deleted as soon as finish_command sees
3508 the inferior stopped. So it doesn't matter that the bp's
3509 address is probably bogus in the new a.out, unlike e.g., the
3510 solib breakpoints.) */
3512 if (b->type == bp_finish)
3517 /* Without a symbolic address, we have little hope of the
3518 pre-exec() address meaning the same thing in the post-exec()
3520 if (b->addr_string == NULL)
3522 delete_breakpoint (b);
3526 /* FIXME what about longjmp breakpoints? Re-create them here? */
3527 create_overlay_event_breakpoint ();
3528 create_longjmp_master_breakpoint ();
3529 create_std_terminate_master_breakpoint ();
3530 create_exception_master_breakpoint ();
3534 detach_breakpoints (ptid_t ptid)
3536 struct bp_location *bl, **blp_tmp;
3538 struct cleanup *old_chain = save_inferior_ptid ();
3539 struct inferior *inf = current_inferior ();
3541 if (PIDGET (ptid) == PIDGET (inferior_ptid))
3542 error (_("Cannot detach breakpoints of inferior_ptid"));
3544 /* Set inferior_ptid; remove_breakpoint_1 uses this global. */
3545 inferior_ptid = ptid;
3546 ALL_BP_LOCATIONS (bl, blp_tmp)
3548 if (bl->pspace != inf->pspace)
3552 val |= remove_breakpoint_1 (bl, mark_inserted);
3555 /* Detach single-step breakpoints as well. */
3556 detach_single_step_breakpoints ();
3558 do_cleanups (old_chain);
3562 /* Remove the breakpoint location BL from the current address space.
3563 Note that this is used to detach breakpoints from a child fork.
3564 When we get here, the child isn't in the inferior list, and neither
3565 do we have objects to represent its address space --- we should
3566 *not* look at bl->pspace->aspace here. */
3569 remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is)
3573 /* BL is never in moribund_locations by our callers. */
3574 gdb_assert (bl->owner != NULL);
3576 if (bl->owner->enable_state == bp_permanent)
3577 /* Permanent breakpoints cannot be inserted or removed. */
3580 /* The type of none suggests that owner is actually deleted.
3581 This should not ever happen. */
3582 gdb_assert (bl->owner->type != bp_none);
3584 if (bl->loc_type == bp_loc_software_breakpoint
3585 || bl->loc_type == bp_loc_hardware_breakpoint)
3587 /* "Normal" instruction breakpoint: either the standard
3588 trap-instruction bp (bp_breakpoint), or a
3589 bp_hardware_breakpoint. */
3591 /* First check to see if we have to handle an overlay. */
3592 if (overlay_debugging == ovly_off
3593 || bl->section == NULL
3594 || !(section_is_overlay (bl->section)))
3596 /* No overlay handling: just remove the breakpoint. */
3597 val = bl->owner->ops->remove_location (bl);
3601 /* This breakpoint is in an overlay section.
3602 Did we set a breakpoint at the LMA? */
3603 if (!overlay_events_enabled)
3605 /* Yes -- overlay event support is not active, so we
3606 should have set a breakpoint at the LMA. Remove it.
3608 /* Ignore any failures: if the LMA is in ROM, we will
3609 have already warned when we failed to insert it. */
3610 if (bl->loc_type == bp_loc_hardware_breakpoint)
3611 target_remove_hw_breakpoint (bl->gdbarch,
3612 &bl->overlay_target_info);
3614 target_remove_breakpoint (bl->gdbarch,
3615 &bl->overlay_target_info);
3617 /* Did we set a breakpoint at the VMA?
3618 If so, we will have marked the breakpoint 'inserted'. */
3621 /* Yes -- remove it. Previously we did not bother to
3622 remove the breakpoint if the section had been
3623 unmapped, but let's not rely on that being safe. We
3624 don't know what the overlay manager might do. */
3626 /* However, we should remove *software* breakpoints only
3627 if the section is still mapped, or else we overwrite
3628 wrong code with the saved shadow contents. */
3629 if (bl->loc_type == bp_loc_hardware_breakpoint
3630 || section_is_mapped (bl->section))
3631 val = bl->owner->ops->remove_location (bl);
3637 /* No -- not inserted, so no need to remove. No error. */
3642 /* In some cases, we might not be able to remove a breakpoint
3643 in a shared library that has already been removed, but we
3644 have not yet processed the shlib unload event. */
3645 if (val && solib_name_from_address (bl->pspace, bl->address))
3650 bl->inserted = (is == mark_inserted);
3652 else if (bl->loc_type == bp_loc_hardware_watchpoint)
3654 gdb_assert (bl->owner->ops != NULL
3655 && bl->owner->ops->remove_location != NULL);
3657 bl->inserted = (is == mark_inserted);
3658 bl->owner->ops->remove_location (bl);
3660 /* Failure to remove any of the hardware watchpoints comes here. */
3661 if ((is == mark_uninserted) && (bl->inserted))
3662 warning (_("Could not remove hardware watchpoint %d."),
3665 else if (bl->owner->type == bp_catchpoint
3666 && breakpoint_enabled (bl->owner)
3669 gdb_assert (bl->owner->ops != NULL
3670 && bl->owner->ops->remove_location != NULL);
3672 val = bl->owner->ops->remove_location (bl);
3676 bl->inserted = (is == mark_inserted);
3683 remove_breakpoint (struct bp_location *bl, insertion_state_t is)
3686 struct cleanup *old_chain;
3688 /* BL is never in moribund_locations by our callers. */
3689 gdb_assert (bl->owner != NULL);
3691 if (bl->owner->enable_state == bp_permanent)
3692 /* Permanent breakpoints cannot be inserted or removed. */
3695 /* The type of none suggests that owner is actually deleted.
3696 This should not ever happen. */
3697 gdb_assert (bl->owner->type != bp_none);
3699 old_chain = save_current_space_and_thread ();
3701 switch_to_program_space_and_thread (bl->pspace);
3703 ret = remove_breakpoint_1 (bl, is);
3705 do_cleanups (old_chain);
3709 /* Clear the "inserted" flag in all breakpoints. */
3712 mark_breakpoints_out (void)
3714 struct bp_location *bl, **blp_tmp;
3716 ALL_BP_LOCATIONS (bl, blp_tmp)
3717 if (bl->pspace == current_program_space)
3721 /* Clear the "inserted" flag in all breakpoints and delete any
3722 breakpoints which should go away between runs of the program.
3724 Plus other such housekeeping that has to be done for breakpoints
3727 Note: this function gets called at the end of a run (by
3728 generic_mourn_inferior) and when a run begins (by
3729 init_wait_for_inferior). */
3734 breakpoint_init_inferior (enum inf_context context)
3736 struct breakpoint *b, *b_tmp;
3737 struct bp_location *bl, **blp_tmp;
3739 struct program_space *pspace = current_program_space;
3741 /* If breakpoint locations are shared across processes, then there's
3743 if (gdbarch_has_global_breakpoints (target_gdbarch ()))
3746 ALL_BP_LOCATIONS (bl, blp_tmp)
3748 /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
3749 if (bl->pspace == pspace
3750 && bl->owner->enable_state != bp_permanent)
3754 ALL_BREAKPOINTS_SAFE (b, b_tmp)
3756 if (b->loc && b->loc->pspace != pspace)
3762 case bp_longjmp_call_dummy:
3764 /* If the call dummy breakpoint is at the entry point it will
3765 cause problems when the inferior is rerun, so we better get
3768 case bp_watchpoint_scope:
3770 /* Also get rid of scope breakpoints. */
3772 case bp_shlib_event:
3774 /* Also remove solib event breakpoints. Their addresses may
3775 have changed since the last time we ran the program.
3776 Actually we may now be debugging against different target;
3777 and so the solib backend that installed this breakpoint may
3778 not be used in by the target. E.g.,
3780 (gdb) file prog-linux
3781 (gdb) run # native linux target
3784 (gdb) file prog-win.exe
3785 (gdb) tar rem :9999 # remote Windows gdbserver.
3788 case bp_step_resume:
3790 /* Also remove step-resume breakpoints. */
3792 delete_breakpoint (b);
3796 case bp_hardware_watchpoint:
3797 case bp_read_watchpoint:
3798 case bp_access_watchpoint:
3800 struct watchpoint *w = (struct watchpoint *) b;
3802 /* Likewise for watchpoints on local expressions. */
3803 if (w->exp_valid_block != NULL)
3804 delete_breakpoint (b);
3805 else if (context == inf_starting)
3807 /* Reset val field to force reread of starting value in
3808 insert_breakpoints. */
3810 value_free (w->val);
3821 /* Get rid of the moribund locations. */
3822 for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix)
3823 decref_bp_location (&bl);
3824 VEC_free (bp_location_p, moribund_locations);
3827 /* These functions concern about actual breakpoints inserted in the
3828 target --- to e.g. check if we need to do decr_pc adjustment or if
3829 we need to hop over the bkpt --- so we check for address space
3830 match, not program space. */
3832 /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
3833 exists at PC. It returns ordinary_breakpoint_here if it's an
3834 ordinary breakpoint, or permanent_breakpoint_here if it's a
3835 permanent breakpoint.
3836 - When continuing from a location with an ordinary breakpoint, we
3837 actually single step once before calling insert_breakpoints.
3838 - When continuing from a location with a permanent breakpoint, we
3839 need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
3840 the target, to advance the PC past the breakpoint. */
3842 enum breakpoint_here
3843 breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
3845 struct bp_location *bl, **blp_tmp;
3846 int any_breakpoint_here = 0;
3848 ALL_BP_LOCATIONS (bl, blp_tmp)
3850 if (bl->loc_type != bp_loc_software_breakpoint
3851 && bl->loc_type != bp_loc_hardware_breakpoint)
3854 /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
3855 if ((breakpoint_enabled (bl->owner)
3856 || bl->owner->enable_state == bp_permanent)
3857 && breakpoint_location_address_match (bl, aspace, pc))
3859 if (overlay_debugging
3860 && section_is_overlay (bl->section)
3861 && !section_is_mapped (bl->section))
3862 continue; /* unmapped overlay -- can't be a match */
3863 else if (bl->owner->enable_state == bp_permanent)
3864 return permanent_breakpoint_here;
3866 any_breakpoint_here = 1;
3870 return any_breakpoint_here ? ordinary_breakpoint_here : 0;
3873 /* Return true if there's a moribund breakpoint at PC. */
3876 moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
3878 struct bp_location *loc;
3881 for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
3882 if (breakpoint_location_address_match (loc, aspace, pc))
3888 /* Returns non-zero if there's a breakpoint inserted at PC, which is
3889 inserted using regular breakpoint_chain / bp_location array
3890 mechanism. This does not check for single-step breakpoints, which
3891 are inserted and removed using direct target manipulation. */
3894 regular_breakpoint_inserted_here_p (struct address_space *aspace,
3897 struct bp_location *bl, **blp_tmp;
3899 ALL_BP_LOCATIONS (bl, blp_tmp)
3901 if (bl->loc_type != bp_loc_software_breakpoint
3902 && bl->loc_type != bp_loc_hardware_breakpoint)
3906 && breakpoint_location_address_match (bl, aspace, pc))
3908 if (overlay_debugging
3909 && section_is_overlay (bl->section)
3910 && !section_is_mapped (bl->section))
3911 continue; /* unmapped overlay -- can't be a match */
3919 /* Returns non-zero iff there's either regular breakpoint
3920 or a single step breakpoint inserted at PC. */
3923 breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc)
3925 if (regular_breakpoint_inserted_here_p (aspace, pc))
3928 if (single_step_breakpoint_inserted_here_p (aspace, pc))
3934 /* This function returns non-zero iff there is a software breakpoint
3938 software_breakpoint_inserted_here_p (struct address_space *aspace,
3941 struct bp_location *bl, **blp_tmp;
3943 ALL_BP_LOCATIONS (bl, blp_tmp)
3945 if (bl->loc_type != bp_loc_software_breakpoint)
3949 && breakpoint_address_match (bl->pspace->aspace, bl->address,
3952 if (overlay_debugging
3953 && section_is_overlay (bl->section)
3954 && !section_is_mapped (bl->section))
3955 continue; /* unmapped overlay -- can't be a match */
3961 /* Also check for software single-step breakpoints. */
3962 if (single_step_breakpoint_inserted_here_p (aspace, pc))
3969 hardware_watchpoint_inserted_in_range (struct address_space *aspace,
3970 CORE_ADDR addr, ULONGEST len)
3972 struct breakpoint *bpt;
3974 ALL_BREAKPOINTS (bpt)
3976 struct bp_location *loc;
3978 if (bpt->type != bp_hardware_watchpoint
3979 && bpt->type != bp_access_watchpoint)
3982 if (!breakpoint_enabled (bpt))
3985 for (loc = bpt->loc; loc; loc = loc->next)
3986 if (loc->pspace->aspace == aspace && loc->inserted)
3990 /* Check for intersection. */
3991 l = max (loc->address, addr);
3992 h = min (loc->address + loc->length, addr + len);
4000 /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
4001 PC is valid for process/thread PTID. */
4004 breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc,
4007 struct bp_location *bl, **blp_tmp;
4008 /* The thread and task IDs associated to PTID, computed lazily. */
4012 ALL_BP_LOCATIONS (bl, blp_tmp)
4014 if (bl->loc_type != bp_loc_software_breakpoint
4015 && bl->loc_type != bp_loc_hardware_breakpoint)
4018 /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */
4019 if (!breakpoint_enabled (bl->owner)
4020 && bl->owner->enable_state != bp_permanent)
4023 if (!breakpoint_location_address_match (bl, aspace, pc))
4026 if (bl->owner->thread != -1)
4028 /* This is a thread-specific breakpoint. Check that ptid
4029 matches that thread. If thread hasn't been computed yet,
4030 it is now time to do so. */
4032 thread = pid_to_thread_id (ptid);
4033 if (bl->owner->thread != thread)
4037 if (bl->owner->task != 0)
4039 /* This is a task-specific breakpoint. Check that ptid
4040 matches that task. If task hasn't been computed yet,
4041 it is now time to do so. */
4043 task = ada_get_task_number (ptid);
4044 if (bl->owner->task != task)
4048 if (overlay_debugging
4049 && section_is_overlay (bl->section)
4050 && !section_is_mapped (bl->section))
4051 continue; /* unmapped overlay -- can't be a match */
4060 /* bpstat stuff. External routines' interfaces are documented
4064 is_catchpoint (struct breakpoint *ep)
4066 return (ep->type == bp_catchpoint);
4069 /* Frees any storage that is part of a bpstat. Does not walk the
4073 bpstat_free (bpstat bs)
4075 if (bs->old_val != NULL)
4076 value_free (bs->old_val);
4077 decref_counted_command_line (&bs->commands);
4078 decref_bp_location (&bs->bp_location_at);
4082 /* Clear a bpstat so that it says we are not at any breakpoint.
4083 Also free any storage that is part of a bpstat. */
4086 bpstat_clear (bpstat *bsp)
4103 /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
4104 is part of the bpstat is copied as well. */
4107 bpstat_copy (bpstat bs)
4111 bpstat retval = NULL;
4116 for (; bs != NULL; bs = bs->next)
4118 tmp = (bpstat) xmalloc (sizeof (*tmp));
4119 memcpy (tmp, bs, sizeof (*tmp));
4120 incref_counted_command_line (tmp->commands);
4121 incref_bp_location (tmp->bp_location_at);
4122 if (bs->old_val != NULL)
4124 tmp->old_val = value_copy (bs->old_val);
4125 release_value (tmp->old_val);
4129 /* This is the first thing in the chain. */
4139 /* Find the bpstat associated with this breakpoint. */
4142 bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint)
4147 for (; bsp != NULL; bsp = bsp->next)
4149 if (bsp->breakpoint_at == breakpoint)
4155 /* Put in *NUM the breakpoint number of the first breakpoint we are
4156 stopped at. *BSP upon return is a bpstat which points to the
4157 remaining breakpoints stopped at (but which is not guaranteed to be
4158 good for anything but further calls to bpstat_num).
4160 Return 0 if passed a bpstat which does not indicate any breakpoints.
4161 Return -1 if stopped at a breakpoint that has been deleted since
4163 Return 1 otherwise. */
4166 bpstat_num (bpstat *bsp, int *num)
4168 struct breakpoint *b;
4171 return 0; /* No more breakpoint values */
4173 /* We assume we'll never have several bpstats that correspond to a
4174 single breakpoint -- otherwise, this function might return the
4175 same number more than once and this will look ugly. */
4176 b = (*bsp)->breakpoint_at;
4177 *bsp = (*bsp)->next;
4179 return -1; /* breakpoint that's been deleted since */
4181 *num = b->number; /* We have its number */
4185 /* See breakpoint.h. */
4188 bpstat_clear_actions (void)
4190 struct thread_info *tp;
4193 if (ptid_equal (inferior_ptid, null_ptid))
4196 tp = find_thread_ptid (inferior_ptid);
4200 for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next)
4202 decref_counted_command_line (&bs->commands);
4204 if (bs->old_val != NULL)
4206 value_free (bs->old_val);
4212 /* Called when a command is about to proceed the inferior. */
4215 breakpoint_about_to_proceed (void)
4217 if (!ptid_equal (inferior_ptid, null_ptid))
4219 struct thread_info *tp = inferior_thread ();
4221 /* Allow inferior function calls in breakpoint commands to not
4222 interrupt the command list. When the call finishes
4223 successfully, the inferior will be standing at the same
4224 breakpoint as if nothing happened. */
4225 if (tp->control.in_infcall)
4229 breakpoint_proceeded = 1;
4232 /* Stub for cleaning up our state if we error-out of a breakpoint
4235 cleanup_executing_breakpoints (void *ignore)
4237 executing_breakpoint_commands = 0;
4240 /* Return non-zero iff CMD as the first line of a command sequence is `silent'
4241 or its equivalent. */
4244 command_line_is_silent (struct command_line *cmd)
4246 return cmd && (strcmp ("silent", cmd->line) == 0
4247 || (xdb_commands && strcmp ("Q", cmd->line) == 0));
4250 /* Execute all the commands associated with all the breakpoints at
4251 this location. Any of these commands could cause the process to
4252 proceed beyond this point, etc. We look out for such changes by
4253 checking the global "breakpoint_proceeded" after each command.
4255 Returns true if a breakpoint command resumed the inferior. In that
4256 case, it is the caller's responsibility to recall it again with the
4257 bpstat of the current thread. */
4260 bpstat_do_actions_1 (bpstat *bsp)
4263 struct cleanup *old_chain;
4266 /* Avoid endless recursion if a `source' command is contained
4268 if (executing_breakpoint_commands)
4271 executing_breakpoint_commands = 1;
4272 old_chain = make_cleanup (cleanup_executing_breakpoints, 0);
4274 prevent_dont_repeat ();
4276 /* This pointer will iterate over the list of bpstat's. */
4279 breakpoint_proceeded = 0;
4280 for (; bs != NULL; bs = bs->next)
4282 struct counted_command_line *ccmd;
4283 struct command_line *cmd;
4284 struct cleanup *this_cmd_tree_chain;
4286 /* Take ownership of the BSP's command tree, if it has one.
4288 The command tree could legitimately contain commands like
4289 'step' and 'next', which call clear_proceed_status, which
4290 frees stop_bpstat's command tree. To make sure this doesn't
4291 free the tree we're executing out from under us, we need to
4292 take ownership of the tree ourselves. Since a given bpstat's
4293 commands are only executed once, we don't need to copy it; we
4294 can clear the pointer in the bpstat, and make sure we free
4295 the tree when we're done. */
4296 ccmd = bs->commands;
4297 bs->commands = NULL;
4298 this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd);
4299 cmd = ccmd ? ccmd->commands : NULL;
4300 if (command_line_is_silent (cmd))
4302 /* The action has been already done by bpstat_stop_status. */
4308 execute_control_command (cmd);
4310 if (breakpoint_proceeded)
4316 /* We can free this command tree now. */
4317 do_cleanups (this_cmd_tree_chain);
4319 if (breakpoint_proceeded)
4321 if (target_can_async_p ())
4322 /* If we are in async mode, then the target might be still
4323 running, not stopped at any breakpoint, so nothing for
4324 us to do here -- just return to the event loop. */
4327 /* In sync mode, when execute_control_command returns
4328 we're already standing on the next breakpoint.
4329 Breakpoint commands for that stop were not run, since
4330 execute_command does not run breakpoint commands --
4331 only command_line_handler does, but that one is not
4332 involved in execution of breakpoint commands. So, we
4333 can now execute breakpoint commands. It should be
4334 noted that making execute_command do bpstat actions is
4335 not an option -- in this case we'll have recursive
4336 invocation of bpstat for each breakpoint with a
4337 command, and can easily blow up GDB stack. Instead, we
4338 return true, which will trigger the caller to recall us
4339 with the new stop_bpstat. */
4344 do_cleanups (old_chain);
4349 bpstat_do_actions (void)
4351 struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup ();
4353 /* Do any commands attached to breakpoint we are stopped at. */
4354 while (!ptid_equal (inferior_ptid, null_ptid)
4355 && target_has_execution
4356 && !is_exited (inferior_ptid)
4357 && !is_executing (inferior_ptid))
4358 /* Since in sync mode, bpstat_do_actions may resume the inferior,
4359 and only return when it is stopped at the next breakpoint, we
4360 keep doing breakpoint actions until it returns false to
4361 indicate the inferior was not resumed. */
4362 if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat))
4365 discard_cleanups (cleanup_if_error);
4368 /* Print out the (old or new) value associated with a watchpoint. */
4371 watchpoint_value_print (struct value *val, struct ui_file *stream)
4374 fprintf_unfiltered (stream, _("<unreadable>"));
4377 struct value_print_options opts;
4378 get_user_print_options (&opts);
4379 value_print (val, stream, &opts);
4383 /* Generic routine for printing messages indicating why we
4384 stopped. The behavior of this function depends on the value
4385 'print_it' in the bpstat structure. Under some circumstances we
4386 may decide not to print anything here and delegate the task to
4389 static enum print_stop_action
4390 print_bp_stop_message (bpstat bs)
4392 switch (bs->print_it)
4395 /* Nothing should be printed for this bpstat entry. */
4396 return PRINT_UNKNOWN;
4400 /* We still want to print the frame, but we already printed the
4401 relevant messages. */
4402 return PRINT_SRC_AND_LOC;
4405 case print_it_normal:
4407 struct breakpoint *b = bs->breakpoint_at;
4409 /* bs->breakpoint_at can be NULL if it was a momentary breakpoint
4410 which has since been deleted. */
4412 return PRINT_UNKNOWN;
4414 /* Normal case. Call the breakpoint's print_it method. */
4415 return b->ops->print_it (bs);
4420 internal_error (__FILE__, __LINE__,
4421 _("print_bp_stop_message: unrecognized enum value"));
4426 /* A helper function that prints a shared library stopped event. */
4429 print_solib_event (int is_catchpoint)
4432 = !VEC_empty (char_ptr, current_program_space->deleted_solibs);
4434 = !VEC_empty (so_list_ptr, current_program_space->added_solibs);
4438 if (any_added || any_deleted)
4439 ui_out_text (current_uiout,
4440 _("Stopped due to shared library event:\n"));
4442 ui_out_text (current_uiout,
4443 _("Stopped due to shared library event (no "
4444 "libraries added or removed)\n"));
4447 if (ui_out_is_mi_like_p (current_uiout))
4448 ui_out_field_string (current_uiout, "reason",
4449 async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT));
4453 struct cleanup *cleanup;
4457 ui_out_text (current_uiout, _(" Inferior unloaded "));
4458 cleanup = make_cleanup_ui_out_list_begin_end (current_uiout,
4461 VEC_iterate (char_ptr, current_program_space->deleted_solibs,
4466 ui_out_text (current_uiout, " ");
4467 ui_out_field_string (current_uiout, "library", name);
4468 ui_out_text (current_uiout, "\n");
4471 do_cleanups (cleanup);
4476 struct so_list *iter;
4478 struct cleanup *cleanup;
4480 ui_out_text (current_uiout, _(" Inferior loaded "));
4481 cleanup = make_cleanup_ui_out_list_begin_end (current_uiout,
4484 VEC_iterate (so_list_ptr, current_program_space->added_solibs,
4489 ui_out_text (current_uiout, " ");
4490 ui_out_field_string (current_uiout, "library", iter->so_name);
4491 ui_out_text (current_uiout, "\n");
4494 do_cleanups (cleanup);
4498 /* Print a message indicating what happened. This is called from
4499 normal_stop(). The input to this routine is the head of the bpstat
4500 list - a list of the eventpoints that caused this stop. KIND is
4501 the target_waitkind for the stopping event. This
4502 routine calls the generic print routine for printing a message
4503 about reasons for stopping. This will print (for example) the
4504 "Breakpoint n," part of the output. The return value of this
4507 PRINT_UNKNOWN: Means we printed nothing.
4508 PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
4509 code to print the location. An example is
4510 "Breakpoint 1, " which should be followed by
4512 PRINT_SRC_ONLY: Means we printed something, but there is no need
4513 to also print the location part of the message.
4514 An example is the catch/throw messages, which
4515 don't require a location appended to the end.
4516 PRINT_NOTHING: We have done some printing and we don't need any
4517 further info to be printed. */
4519 enum print_stop_action
4520 bpstat_print (bpstat bs, int kind)
4524 /* Maybe another breakpoint in the chain caused us to stop.
4525 (Currently all watchpoints go on the bpstat whether hit or not.
4526 That probably could (should) be changed, provided care is taken
4527 with respect to bpstat_explains_signal). */
4528 for (; bs; bs = bs->next)
4530 val = print_bp_stop_message (bs);
4531 if (val == PRINT_SRC_ONLY
4532 || val == PRINT_SRC_AND_LOC
4533 || val == PRINT_NOTHING)
4537 /* If we had hit a shared library event breakpoint,
4538 print_bp_stop_message would print out this message. If we hit an
4539 OS-level shared library event, do the same thing. */
4540 if (kind == TARGET_WAITKIND_LOADED)
4542 print_solib_event (0);
4543 return PRINT_NOTHING;
4546 /* We reached the end of the chain, or we got a null BS to start
4547 with and nothing was printed. */
4548 return PRINT_UNKNOWN;
4551 /* Evaluate the expression EXP and return 1 if value is zero. This is
4552 used inside a catch_errors to evaluate the breakpoint condition.
4553 The argument is a "struct expression *" that has been cast to a
4554 "char *" to make it pass through catch_errors. */
4557 breakpoint_cond_eval (void *exp)
4559 struct value *mark = value_mark ();
4560 int i = !value_true (evaluate_expression ((struct expression *) exp));
4562 value_free_to_mark (mark);
4566 /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */
4569 bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer)
4573 bs = (bpstat) xmalloc (sizeof (*bs));
4575 **bs_link_pointer = bs;
4576 *bs_link_pointer = &bs->next;
4577 bs->breakpoint_at = bl->owner;
4578 bs->bp_location_at = bl;
4579 incref_bp_location (bl);
4580 /* If the condition is false, etc., don't do the commands. */
4581 bs->commands = NULL;
4583 bs->print_it = print_it_normal;
4587 /* The target has stopped with waitstatus WS. Check if any hardware
4588 watchpoints have triggered, according to the target. */
4591 watchpoints_triggered (struct target_waitstatus *ws)
4593 int stopped_by_watchpoint = target_stopped_by_watchpoint ();
4595 struct breakpoint *b;
4597 if (!stopped_by_watchpoint)
4599 /* We were not stopped by a watchpoint. Mark all watchpoints
4600 as not triggered. */
4602 if (is_hardware_watchpoint (b))
4604 struct watchpoint *w = (struct watchpoint *) b;
4606 w->watchpoint_triggered = watch_triggered_no;
4612 if (!target_stopped_data_address (¤t_target, &addr))
4614 /* We were stopped by a watchpoint, but we don't know where.
4615 Mark all watchpoints as unknown. */
4617 if (is_hardware_watchpoint (b))
4619 struct watchpoint *w = (struct watchpoint *) b;
4621 w->watchpoint_triggered = watch_triggered_unknown;
4624 return stopped_by_watchpoint;
4627 /* The target could report the data address. Mark watchpoints
4628 affected by this data address as triggered, and all others as not
4632 if (is_hardware_watchpoint (b))
4634 struct watchpoint *w = (struct watchpoint *) b;
4635 struct bp_location *loc;
4637 w->watchpoint_triggered = watch_triggered_no;
4638 for (loc = b->loc; loc; loc = loc->next)
4640 if (is_masked_watchpoint (b))
4642 CORE_ADDR newaddr = addr & w->hw_wp_mask;
4643 CORE_ADDR start = loc->address & w->hw_wp_mask;
4645 if (newaddr == start)
4647 w->watchpoint_triggered = watch_triggered_yes;
4651 /* Exact match not required. Within range is sufficient. */
4652 else if (target_watchpoint_addr_within_range (¤t_target,
4656 w->watchpoint_triggered = watch_triggered_yes;
4665 /* Possible return values for watchpoint_check (this can't be an enum
4666 because of check_errors). */
4667 /* The watchpoint has been deleted. */
4668 #define WP_DELETED 1
4669 /* The value has changed. */
4670 #define WP_VALUE_CHANGED 2
4671 /* The value has not changed. */
4672 #define WP_VALUE_NOT_CHANGED 3
4673 /* Ignore this watchpoint, no matter if the value changed or not. */
4676 #define BP_TEMPFLAG 1
4677 #define BP_HARDWAREFLAG 2
4679 /* Evaluate watchpoint condition expression and check if its value
4682 P should be a pointer to struct bpstat, but is defined as a void *
4683 in order for this function to be usable with catch_errors. */
4686 watchpoint_check (void *p)
4688 bpstat bs = (bpstat) p;
4689 struct watchpoint *b;
4690 struct frame_info *fr;
4691 int within_current_scope;
4693 /* BS is built from an existing struct breakpoint. */
4694 gdb_assert (bs->breakpoint_at != NULL);
4695 b = (struct watchpoint *) bs->breakpoint_at;
4697 /* If this is a local watchpoint, we only want to check if the
4698 watchpoint frame is in scope if the current thread is the thread
4699 that was used to create the watchpoint. */
4700 if (!watchpoint_in_thread_scope (b))
4703 if (b->exp_valid_block == NULL)
4704 within_current_scope = 1;
4707 struct frame_info *frame = get_current_frame ();
4708 struct gdbarch *frame_arch = get_frame_arch (frame);
4709 CORE_ADDR frame_pc = get_frame_pc (frame);
4711 /* in_function_epilogue_p() returns a non-zero value if we're
4712 still in the function but the stack frame has already been
4713 invalidated. Since we can't rely on the values of local
4714 variables after the stack has been destroyed, we are treating
4715 the watchpoint in that state as `not changed' without further
4716 checking. Don't mark watchpoints as changed if the current
4717 frame is in an epilogue - even if they are in some other
4718 frame, our view of the stack is likely to be wrong and
4719 frame_find_by_id could error out. */
4720 if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
4723 fr = frame_find_by_id (b->watchpoint_frame);
4724 within_current_scope = (fr != NULL);
4726 /* If we've gotten confused in the unwinder, we might have
4727 returned a frame that can't describe this variable. */
4728 if (within_current_scope)
4730 struct symbol *function;
4732 function = get_frame_function (fr);
4733 if (function == NULL
4734 || !contained_in (b->exp_valid_block,
4735 SYMBOL_BLOCK_VALUE (function)))
4736 within_current_scope = 0;
4739 if (within_current_scope)
4740 /* If we end up stopping, the current frame will get selected
4741 in normal_stop. So this call to select_frame won't affect
4746 if (within_current_scope)
4748 /* We use value_{,free_to_}mark because it could be a *long*
4749 time before we return to the command level and call
4750 free_all_values. We can't call free_all_values because we
4751 might be in the middle of evaluating a function call. */
4755 struct value *new_val;
4757 if (is_masked_watchpoint (&b->base))
4758 /* Since we don't know the exact trigger address (from
4759 stopped_data_address), just tell the user we've triggered
4760 a mask watchpoint. */
4761 return WP_VALUE_CHANGED;
4763 mark = value_mark ();
4764 fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL);
4766 /* We use value_equal_contents instead of value_equal because
4767 the latter coerces an array to a pointer, thus comparing just
4768 the address of the array instead of its contents. This is
4769 not what we want. */
4770 if ((b->val != NULL) != (new_val != NULL)
4771 || (b->val != NULL && !value_equal_contents (b->val, new_val)))
4773 if (new_val != NULL)
4775 release_value (new_val);
4776 value_free_to_mark (mark);
4778 bs->old_val = b->val;
4781 return WP_VALUE_CHANGED;
4785 /* Nothing changed. */
4786 value_free_to_mark (mark);
4787 return WP_VALUE_NOT_CHANGED;
4792 struct ui_out *uiout = current_uiout;
4794 /* This seems like the only logical thing to do because
4795 if we temporarily ignored the watchpoint, then when
4796 we reenter the block in which it is valid it contains
4797 garbage (in the case of a function, it may have two
4798 garbage values, one before and one after the prologue).
4799 So we can't even detect the first assignment to it and
4800 watch after that (since the garbage may or may not equal
4801 the first value assigned). */
4802 /* We print all the stop information in
4803 breakpoint_ops->print_it, but in this case, by the time we
4804 call breakpoint_ops->print_it this bp will be deleted
4805 already. So we have no choice but print the information
4807 if (ui_out_is_mi_like_p (uiout))
4809 (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE));
4810 ui_out_text (uiout, "\nWatchpoint ");
4811 ui_out_field_int (uiout, "wpnum", b->base.number);
4813 " deleted because the program has left the block in\n\
4814 which its expression is valid.\n");
4816 /* Make sure the watchpoint's commands aren't executed. */
4817 decref_counted_command_line (&b->base.commands);
4818 watchpoint_del_at_next_stop (b);
4824 /* Return true if it looks like target has stopped due to hitting
4825 breakpoint location BL. This function does not check if we should
4826 stop, only if BL explains the stop. */
4829 bpstat_check_location (const struct bp_location *bl,
4830 struct address_space *aspace, CORE_ADDR bp_addr,
4831 const struct target_waitstatus *ws)
4833 struct breakpoint *b = bl->owner;
4835 /* BL is from an existing breakpoint. */
4836 gdb_assert (b != NULL);
4838 return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws);
4841 /* Determine if the watched values have actually changed, and we
4842 should stop. If not, set BS->stop to 0. */
4845 bpstat_check_watchpoint (bpstat bs)
4847 const struct bp_location *bl;
4848 struct watchpoint *b;
4850 /* BS is built for existing struct breakpoint. */
4851 bl = bs->bp_location_at;
4852 gdb_assert (bl != NULL);
4853 b = (struct watchpoint *) bs->breakpoint_at;
4854 gdb_assert (b != NULL);
4857 int must_check_value = 0;
4859 if (b->base.type == bp_watchpoint)
4860 /* For a software watchpoint, we must always check the
4862 must_check_value = 1;
4863 else if (b->watchpoint_triggered == watch_triggered_yes)
4864 /* We have a hardware watchpoint (read, write, or access)
4865 and the target earlier reported an address watched by
4867 must_check_value = 1;
4868 else if (b->watchpoint_triggered == watch_triggered_unknown
4869 && b->base.type == bp_hardware_watchpoint)
4870 /* We were stopped by a hardware watchpoint, but the target could
4871 not report the data address. We must check the watchpoint's
4872 value. Access and read watchpoints are out of luck; without
4873 a data address, we can't figure it out. */
4874 must_check_value = 1;
4876 if (must_check_value)
4879 = xstrprintf ("Error evaluating expression for watchpoint %d\n",
4881 struct cleanup *cleanups = make_cleanup (xfree, message);
4882 int e = catch_errors (watchpoint_check, bs, message,
4884 do_cleanups (cleanups);
4888 /* We've already printed what needs to be printed. */
4889 bs->print_it = print_it_done;
4893 bs->print_it = print_it_noop;
4896 case WP_VALUE_CHANGED:
4897 if (b->base.type == bp_read_watchpoint)
4899 /* There are two cases to consider here:
4901 1. We're watching the triggered memory for reads.
4902 In that case, trust the target, and always report
4903 the watchpoint hit to the user. Even though
4904 reads don't cause value changes, the value may
4905 have changed since the last time it was read, and
4906 since we're not trapping writes, we will not see
4907 those, and as such we should ignore our notion of
4910 2. We're watching the triggered memory for both
4911 reads and writes. There are two ways this may
4914 2.1. This is a target that can't break on data
4915 reads only, but can break on accesses (reads or
4916 writes), such as e.g., x86. We detect this case
4917 at the time we try to insert read watchpoints.
4919 2.2. Otherwise, the target supports read
4920 watchpoints, but, the user set an access or write
4921 watchpoint watching the same memory as this read
4924 If we're watching memory writes as well as reads,
4925 ignore watchpoint hits when we find that the
4926 value hasn't changed, as reads don't cause
4927 changes. This still gives false positives when
4928 the program writes the same value to memory as
4929 what there was already in memory (we will confuse
4930 it for a read), but it's much better than
4933 int other_write_watchpoint = 0;
4935 if (bl->watchpoint_type == hw_read)
4937 struct breakpoint *other_b;
4939 ALL_BREAKPOINTS (other_b)
4940 if (other_b->type == bp_hardware_watchpoint
4941 || other_b->type == bp_access_watchpoint)
4943 struct watchpoint *other_w =
4944 (struct watchpoint *) other_b;
4946 if (other_w->watchpoint_triggered
4947 == watch_triggered_yes)
4949 other_write_watchpoint = 1;
4955 if (other_write_watchpoint
4956 || bl->watchpoint_type == hw_access)
4958 /* We're watching the same memory for writes,
4959 and the value changed since the last time we
4960 updated it, so this trap must be for a write.
4962 bs->print_it = print_it_noop;
4967 case WP_VALUE_NOT_CHANGED:
4968 if (b->base.type == bp_hardware_watchpoint
4969 || b->base.type == bp_watchpoint)
4971 /* Don't stop: write watchpoints shouldn't fire if
4972 the value hasn't changed. */
4973 bs->print_it = print_it_noop;
4981 /* Error from catch_errors. */
4982 printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number);
4983 watchpoint_del_at_next_stop (b);
4984 /* We've already printed what needs to be printed. */
4985 bs->print_it = print_it_done;
4989 else /* must_check_value == 0 */
4991 /* This is a case where some watchpoint(s) triggered, but
4992 not at the address of this watchpoint, or else no
4993 watchpoint triggered after all. So don't print
4994 anything for this watchpoint. */
4995 bs->print_it = print_it_noop;
5002 /* Check conditions (condition proper, frame, thread and ignore count)
5003 of breakpoint referred to by BS. If we should not stop for this
5004 breakpoint, set BS->stop to 0. */
5007 bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid)
5009 int thread_id = pid_to_thread_id (ptid);
5010 const struct bp_location *bl;
5011 struct breakpoint *b;
5013 /* BS is built for existing struct breakpoint. */
5014 bl = bs->bp_location_at;
5015 gdb_assert (bl != NULL);
5016 b = bs->breakpoint_at;
5017 gdb_assert (b != NULL);
5019 /* Even if the target evaluated the condition on its end and notified GDB, we
5020 need to do so again since GDB does not know if we stopped due to a
5021 breakpoint or a single step breakpoint. */
5023 if (frame_id_p (b->frame_id)
5024 && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ())))
5028 int value_is_zero = 0;
5029 struct expression *cond;
5031 /* Evaluate Python breakpoints that have a "stop"
5032 method implemented. */
5033 if (b->py_bp_object)
5034 bs->stop = gdbpy_should_stop (b->py_bp_object);
5036 if (is_watchpoint (b))
5038 struct watchpoint *w = (struct watchpoint *) b;
5045 if (cond && b->disposition != disp_del_at_next_stop)
5047 int within_current_scope = 1;
5048 struct watchpoint * w;
5050 /* We use value_mark and value_free_to_mark because it could
5051 be a long time before we return to the command level and
5052 call free_all_values. We can't call free_all_values
5053 because we might be in the middle of evaluating a
5055 struct value *mark = value_mark ();
5057 if (is_watchpoint (b))
5058 w = (struct watchpoint *) b;
5062 /* Need to select the frame, with all that implies so that
5063 the conditions will have the right context. Because we
5064 use the frame, we will not see an inlined function's
5065 variables when we arrive at a breakpoint at the start
5066 of the inlined function; the current frame will be the
5068 if (w == NULL || w->cond_exp_valid_block == NULL)
5069 select_frame (get_current_frame ());
5072 struct frame_info *frame;
5074 /* For local watchpoint expressions, which particular
5075 instance of a local is being watched matters, so we
5076 keep track of the frame to evaluate the expression
5077 in. To evaluate the condition however, it doesn't
5078 really matter which instantiation of the function
5079 where the condition makes sense triggers the
5080 watchpoint. This allows an expression like "watch
5081 global if q > 10" set in `func', catch writes to
5082 global on all threads that call `func', or catch
5083 writes on all recursive calls of `func' by a single
5084 thread. We simply always evaluate the condition in
5085 the innermost frame that's executing where it makes
5086 sense to evaluate the condition. It seems
5088 frame = block_innermost_frame (w->cond_exp_valid_block);
5090 select_frame (frame);
5092 within_current_scope = 0;
5094 if (within_current_scope)
5096 = catch_errors (breakpoint_cond_eval, cond,
5097 "Error in testing breakpoint condition:\n",
5101 warning (_("Watchpoint condition cannot be tested "
5102 "in the current scope"));
5103 /* If we failed to set the right context for this
5104 watchpoint, unconditionally report it. */
5107 /* FIXME-someday, should give breakpoint #. */
5108 value_free_to_mark (mark);
5111 if (cond && value_is_zero)
5115 else if (b->thread != -1 && b->thread != thread_id)
5119 else if (b->ignore_count > 0)
5122 annotate_ignore_count_change ();
5124 /* Increase the hit count even though we don't stop. */
5126 observer_notify_breakpoint_modified (b);
5132 /* Get a bpstat associated with having just stopped at address
5133 BP_ADDR in thread PTID.
5135 Determine whether we stopped at a breakpoint, etc, or whether we
5136 don't understand this stop. Result is a chain of bpstat's such
5139 if we don't understand the stop, the result is a null pointer.
5141 if we understand why we stopped, the result is not null.
5143 Each element of the chain refers to a particular breakpoint or
5144 watchpoint at which we have stopped. (We may have stopped for
5145 several reasons concurrently.)
5147 Each element of the chain has valid next, breakpoint_at,
5148 commands, FIXME??? fields. */
5151 bpstat_stop_status (struct address_space *aspace,
5152 CORE_ADDR bp_addr, ptid_t ptid,
5153 const struct target_waitstatus *ws)
5155 struct breakpoint *b = NULL;
5156 struct bp_location *bl;
5157 struct bp_location *loc;
5158 /* First item of allocated bpstat's. */
5159 bpstat bs_head = NULL, *bs_link = &bs_head;
5160 /* Pointer to the last thing in the chain currently. */
5163 int need_remove_insert;
5166 /* First, build the bpstat chain with locations that explain a
5167 target stop, while being careful to not set the target running,
5168 as that may invalidate locations (in particular watchpoint
5169 locations are recreated). Resuming will happen here with
5170 breakpoint conditions or watchpoint expressions that include
5171 inferior function calls. */
5175 if (!breakpoint_enabled (b) && b->enable_state != bp_permanent)
5178 for (bl = b->loc; bl != NULL; bl = bl->next)
5180 /* For hardware watchpoints, we look only at the first
5181 location. The watchpoint_check function will work on the
5182 entire expression, not the individual locations. For
5183 read watchpoints, the watchpoints_triggered function has
5184 checked all locations already. */
5185 if (b->type == bp_hardware_watchpoint && bl != b->loc)
5188 if (!bl->enabled || bl->shlib_disabled)
5191 if (!bpstat_check_location (bl, aspace, bp_addr, ws))
5194 /* Come here if it's a watchpoint, or if the break address
5197 bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to
5200 /* Assume we stop. Should we find a watchpoint that is not
5201 actually triggered, or if the condition of the breakpoint
5202 evaluates as false, we'll reset 'stop' to 0. */
5206 /* If this is a scope breakpoint, mark the associated
5207 watchpoint as triggered so that we will handle the
5208 out-of-scope event. We'll get to the watchpoint next
5210 if (b->type == bp_watchpoint_scope && b->related_breakpoint != b)
5212 struct watchpoint *w = (struct watchpoint *) b->related_breakpoint;
5214 w->watchpoint_triggered = watch_triggered_yes;
5219 for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
5221 if (breakpoint_location_address_match (loc, aspace, bp_addr))
5223 bs = bpstat_alloc (loc, &bs_link);
5224 /* For hits of moribund locations, we should just proceed. */
5227 bs->print_it = print_it_noop;
5231 /* A bit of special processing for shlib breakpoints. We need to
5232 process solib loading here, so that the lists of loaded and
5233 unloaded libraries are correct before we handle "catch load" and
5235 for (bs = bs_head; bs != NULL; bs = bs->next)
5237 if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event)
5239 handle_solib_event ();
5244 /* Now go through the locations that caused the target to stop, and
5245 check whether we're interested in reporting this stop to higher
5246 layers, or whether we should resume the target transparently. */
5250 for (bs = bs_head; bs != NULL; bs = bs->next)
5255 b = bs->breakpoint_at;
5256 b->ops->check_status (bs);
5259 bpstat_check_breakpoint_conditions (bs, ptid);
5264 observer_notify_breakpoint_modified (b);
5266 /* We will stop here. */
5267 if (b->disposition == disp_disable)
5269 --(b->enable_count);
5270 if (b->enable_count <= 0
5271 && b->enable_state != bp_permanent)
5272 b->enable_state = bp_disabled;
5277 bs->commands = b->commands;
5278 incref_counted_command_line (bs->commands);
5279 if (command_line_is_silent (bs->commands
5280 ? bs->commands->commands : NULL))
5286 /* Print nothing for this entry if we don't stop or don't
5288 if (!bs->stop || !bs->print)
5289 bs->print_it = print_it_noop;
5292 /* If we aren't stopping, the value of some hardware watchpoint may
5293 not have changed, but the intermediate memory locations we are
5294 watching may have. Don't bother if we're stopping; this will get
5296 need_remove_insert = 0;
5297 if (! bpstat_causes_stop (bs_head))
5298 for (bs = bs_head; bs != NULL; bs = bs->next)
5300 && bs->breakpoint_at
5301 && is_hardware_watchpoint (bs->breakpoint_at))
5303 struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at;
5305 update_watchpoint (w, 0 /* don't reparse. */);
5306 need_remove_insert = 1;
5309 if (need_remove_insert)
5310 update_global_location_list (1);
5311 else if (removed_any)
5312 update_global_location_list (0);
5318 handle_jit_event (void)
5320 struct frame_info *frame;
5321 struct gdbarch *gdbarch;
5323 /* Switch terminal for any messages produced by
5324 breakpoint_re_set. */
5325 target_terminal_ours_for_output ();
5327 frame = get_current_frame ();
5328 gdbarch = get_frame_arch (frame);
5330 jit_event_handler (gdbarch);
5332 target_terminal_inferior ();
5335 /* Handle an solib event by calling solib_add. */
5338 handle_solib_event (void)
5340 clear_program_space_solib_cache (current_inferior ()->pspace);
5342 /* Check for any newly added shared libraries if we're supposed to
5343 be adding them automatically. Switch terminal for any messages
5344 produced by breakpoint_re_set. */
5345 target_terminal_ours_for_output ();
5347 SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add);
5349 solib_add (NULL, 0, ¤t_target, auto_solib_add);
5351 target_terminal_inferior ();
5354 /* Prepare WHAT final decision for infrun. */
5356 /* Decide what infrun needs to do with this bpstat. */
5359 bpstat_what (bpstat bs_head)
5361 struct bpstat_what retval;
5365 retval.main_action = BPSTAT_WHAT_KEEP_CHECKING;
5366 retval.call_dummy = STOP_NONE;
5367 retval.is_longjmp = 0;
5369 for (bs = bs_head; bs != NULL; bs = bs->next)
5371 /* Extract this BS's action. After processing each BS, we check
5372 if its action overrides all we've seem so far. */
5373 enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING;
5376 if (bs->breakpoint_at == NULL)
5378 /* I suspect this can happen if it was a momentary
5379 breakpoint which has since been deleted. */
5383 bptype = bs->breakpoint_at->type;
5390 case bp_hardware_breakpoint:
5393 case bp_shlib_event:
5397 this_action = BPSTAT_WHAT_STOP_NOISY;
5399 this_action = BPSTAT_WHAT_STOP_SILENT;
5402 this_action = BPSTAT_WHAT_SINGLE;
5405 case bp_hardware_watchpoint:
5406 case bp_read_watchpoint:
5407 case bp_access_watchpoint:
5411 this_action = BPSTAT_WHAT_STOP_NOISY;
5413 this_action = BPSTAT_WHAT_STOP_SILENT;
5417 /* There was a watchpoint, but we're not stopping.
5418 This requires no further action. */
5422 case bp_longjmp_call_dummy:
5424 this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME;
5425 retval.is_longjmp = bptype != bp_exception;
5427 case bp_longjmp_resume:
5428 case bp_exception_resume:
5429 this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME;
5430 retval.is_longjmp = bptype == bp_longjmp_resume;
5432 case bp_step_resume:
5434 this_action = BPSTAT_WHAT_STEP_RESUME;
5437 /* It is for the wrong frame. */
5438 this_action = BPSTAT_WHAT_SINGLE;
5441 case bp_hp_step_resume:
5443 this_action = BPSTAT_WHAT_HP_STEP_RESUME;
5446 /* It is for the wrong frame. */
5447 this_action = BPSTAT_WHAT_SINGLE;
5450 case bp_watchpoint_scope:
5451 case bp_thread_event:
5452 case bp_overlay_event:
5453 case bp_longjmp_master:
5454 case bp_std_terminate_master:
5455 case bp_exception_master:
5456 this_action = BPSTAT_WHAT_SINGLE;
5462 this_action = BPSTAT_WHAT_STOP_NOISY;
5464 this_action = BPSTAT_WHAT_STOP_SILENT;
5468 /* There was a catchpoint, but we're not stopping.
5469 This requires no further action. */
5474 this_action = BPSTAT_WHAT_SINGLE;
5477 /* Make sure the action is stop (silent or noisy),
5478 so infrun.c pops the dummy frame. */
5479 retval.call_dummy = STOP_STACK_DUMMY;
5480 this_action = BPSTAT_WHAT_STOP_SILENT;
5482 case bp_std_terminate:
5483 /* Make sure the action is stop (silent or noisy),
5484 so infrun.c pops the dummy frame. */
5485 retval.call_dummy = STOP_STD_TERMINATE;
5486 this_action = BPSTAT_WHAT_STOP_SILENT;
5489 case bp_fast_tracepoint:
5490 case bp_static_tracepoint:
5491 /* Tracepoint hits should not be reported back to GDB, and
5492 if one got through somehow, it should have been filtered
5494 internal_error (__FILE__, __LINE__,
5495 _("bpstat_what: tracepoint encountered"));
5497 case bp_gnu_ifunc_resolver:
5498 /* Step over it (and insert bp_gnu_ifunc_resolver_return). */
5499 this_action = BPSTAT_WHAT_SINGLE;
5501 case bp_gnu_ifunc_resolver_return:
5502 /* The breakpoint will be removed, execution will restart from the
5503 PC of the former breakpoint. */
5504 this_action = BPSTAT_WHAT_KEEP_CHECKING;
5508 this_action = BPSTAT_WHAT_STOP_SILENT;
5512 internal_error (__FILE__, __LINE__,
5513 _("bpstat_what: unhandled bptype %d"), (int) bptype);
5516 retval.main_action = max (retval.main_action, this_action);
5519 /* These operations may affect the bs->breakpoint_at state so they are
5520 delayed after MAIN_ACTION is decided above. */
5525 fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n");
5527 handle_jit_event ();
5530 for (bs = bs_head; bs != NULL; bs = bs->next)
5532 struct breakpoint *b = bs->breakpoint_at;
5538 case bp_gnu_ifunc_resolver:
5539 gnu_ifunc_resolver_stop (b);
5541 case bp_gnu_ifunc_resolver_return:
5542 gnu_ifunc_resolver_return_stop (b);
5550 /* Nonzero if we should step constantly (e.g. watchpoints on machines
5551 without hardware support). This isn't related to a specific bpstat,
5552 just to things like whether watchpoints are set. */
5555 bpstat_should_step (void)
5557 struct breakpoint *b;
5560 if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL)
5566 bpstat_causes_stop (bpstat bs)
5568 for (; bs != NULL; bs = bs->next)
5577 /* Compute a string of spaces suitable to indent the next line
5578 so it starts at the position corresponding to the table column
5579 named COL_NAME in the currently active table of UIOUT. */
5582 wrap_indent_at_field (struct ui_out *uiout, const char *col_name)
5584 static char wrap_indent[80];
5585 int i, total_width, width, align;
5589 for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++)
5591 if (strcmp (text, col_name) == 0)
5593 gdb_assert (total_width < sizeof wrap_indent);
5594 memset (wrap_indent, ' ', total_width);
5595 wrap_indent[total_width] = 0;
5600 total_width += width + 1;
5606 /* Determine if the locations of this breakpoint will have their conditions
5607 evaluated by the target, host or a mix of both. Returns the following:
5609 "host": Host evals condition.
5610 "host or target": Host or Target evals condition.
5611 "target": Target evals condition.
5615 bp_condition_evaluator (struct breakpoint *b)
5617 struct bp_location *bl;
5618 char host_evals = 0;
5619 char target_evals = 0;
5624 if (!is_breakpoint (b))
5627 if (gdb_evaluates_breakpoint_condition_p ()
5628 || !target_supports_evaluation_of_breakpoint_conditions ())
5629 return condition_evaluation_host;
5631 for (bl = b->loc; bl; bl = bl->next)
5633 if (bl->cond_bytecode)
5639 if (host_evals && target_evals)
5640 return condition_evaluation_both;
5641 else if (target_evals)
5642 return condition_evaluation_target;
5644 return condition_evaluation_host;
5647 /* Determine the breakpoint location's condition evaluator. This is
5648 similar to bp_condition_evaluator, but for locations. */
5651 bp_location_condition_evaluator (struct bp_location *bl)
5653 if (bl && !is_breakpoint (bl->owner))
5656 if (gdb_evaluates_breakpoint_condition_p ()
5657 || !target_supports_evaluation_of_breakpoint_conditions ())
5658 return condition_evaluation_host;
5660 if (bl && bl->cond_bytecode)
5661 return condition_evaluation_target;
5663 return condition_evaluation_host;
5666 /* Print the LOC location out of the list of B->LOC locations. */
5669 print_breakpoint_location (struct breakpoint *b,
5670 struct bp_location *loc)
5672 struct ui_out *uiout = current_uiout;
5673 struct cleanup *old_chain = save_current_program_space ();
5675 if (loc != NULL && loc->shlib_disabled)
5679 set_current_program_space (loc->pspace);
5681 if (b->display_canonical)
5682 ui_out_field_string (uiout, "what", b->addr_string);
5683 else if (loc && loc->source_file)
5686 = find_pc_sect_function (loc->address, loc->section);
5689 ui_out_text (uiout, "in ");
5690 ui_out_field_string (uiout, "func",
5691 SYMBOL_PRINT_NAME (sym));
5692 ui_out_text (uiout, " ");
5693 ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what"));
5694 ui_out_text (uiout, "at ");
5696 ui_out_field_string (uiout, "file", loc->source_file);
5697 ui_out_text (uiout, ":");
5699 if (ui_out_is_mi_like_p (uiout))
5701 struct symtab_and_line sal = find_pc_line (loc->address, 0);
5702 const char *fullname = symtab_to_fullname (sal.symtab);
5704 ui_out_field_string (uiout, "fullname", fullname);
5707 ui_out_field_int (uiout, "line", loc->line_number);
5711 struct ui_file *stb = mem_fileopen ();
5712 struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb);
5714 print_address_symbolic (loc->gdbarch, loc->address, stb,
5716 ui_out_field_stream (uiout, "at", stb);
5718 do_cleanups (stb_chain);
5721 ui_out_field_string (uiout, "pending", b->addr_string);
5723 if (loc && is_breakpoint (b)
5724 && breakpoint_condition_evaluation_mode () == condition_evaluation_target
5725 && bp_condition_evaluator (b) == condition_evaluation_both)
5727 ui_out_text (uiout, " (");
5728 ui_out_field_string (uiout, "evaluated-by",
5729 bp_location_condition_evaluator (loc));
5730 ui_out_text (uiout, ")");
5733 do_cleanups (old_chain);
5737 bptype_string (enum bptype type)
5739 struct ep_type_description
5744 static struct ep_type_description bptypes[] =
5746 {bp_none, "?deleted?"},
5747 {bp_breakpoint, "breakpoint"},
5748 {bp_hardware_breakpoint, "hw breakpoint"},
5749 {bp_until, "until"},
5750 {bp_finish, "finish"},
5751 {bp_watchpoint, "watchpoint"},
5752 {bp_hardware_watchpoint, "hw watchpoint"},
5753 {bp_read_watchpoint, "read watchpoint"},
5754 {bp_access_watchpoint, "acc watchpoint"},
5755 {bp_longjmp, "longjmp"},
5756 {bp_longjmp_resume, "longjmp resume"},
5757 {bp_longjmp_call_dummy, "longjmp for call dummy"},
5758 {bp_exception, "exception"},
5759 {bp_exception_resume, "exception resume"},
5760 {bp_step_resume, "step resume"},
5761 {bp_hp_step_resume, "high-priority step resume"},
5762 {bp_watchpoint_scope, "watchpoint scope"},
5763 {bp_call_dummy, "call dummy"},
5764 {bp_std_terminate, "std::terminate"},
5765 {bp_shlib_event, "shlib events"},
5766 {bp_thread_event, "thread events"},
5767 {bp_overlay_event, "overlay events"},
5768 {bp_longjmp_master, "longjmp master"},
5769 {bp_std_terminate_master, "std::terminate master"},
5770 {bp_exception_master, "exception master"},
5771 {bp_catchpoint, "catchpoint"},
5772 {bp_tracepoint, "tracepoint"},
5773 {bp_fast_tracepoint, "fast tracepoint"},
5774 {bp_static_tracepoint, "static tracepoint"},
5775 {bp_dprintf, "dprintf"},
5776 {bp_jit_event, "jit events"},
5777 {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"},
5778 {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"},
5781 if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0])))
5782 || ((int) type != bptypes[(int) type].type))
5783 internal_error (__FILE__, __LINE__,
5784 _("bptypes table does not describe type #%d."),
5787 return bptypes[(int) type].description;
5790 /* Print B to gdb_stdout. */
5793 print_one_breakpoint_location (struct breakpoint *b,
5794 struct bp_location *loc,
5796 struct bp_location **last_loc,
5799 struct command_line *l;
5800 static char bpenables[] = "nynny";
5802 struct ui_out *uiout = current_uiout;
5803 int header_of_multiple = 0;
5804 int part_of_multiple = (loc != NULL);
5805 struct value_print_options opts;
5807 get_user_print_options (&opts);
5809 gdb_assert (!loc || loc_number != 0);
5810 /* See comment in print_one_breakpoint concerning treatment of
5811 breakpoints with single disabled location. */
5814 && (b->loc->next != NULL || !b->loc->enabled)))
5815 header_of_multiple = 1;
5823 if (part_of_multiple)
5826 formatted = xstrprintf ("%d.%d", b->number, loc_number);
5827 ui_out_field_string (uiout, "number", formatted);
5832 ui_out_field_int (uiout, "number", b->number);
5837 if (part_of_multiple)
5838 ui_out_field_skip (uiout, "type");
5840 ui_out_field_string (uiout, "type", bptype_string (b->type));
5844 if (part_of_multiple)
5845 ui_out_field_skip (uiout, "disp");
5847 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
5852 if (part_of_multiple)
5853 ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n");
5855 ui_out_field_fmt (uiout, "enabled", "%c",
5856 bpenables[(int) b->enable_state]);
5857 ui_out_spaces (uiout, 2);
5861 if (b->ops != NULL && b->ops->print_one != NULL)
5863 /* Although the print_one can possibly print all locations,
5864 calling it here is not likely to get any nice result. So,
5865 make sure there's just one location. */
5866 gdb_assert (b->loc == NULL || b->loc->next == NULL);
5867 b->ops->print_one (b, last_loc);
5873 internal_error (__FILE__, __LINE__,
5874 _("print_one_breakpoint: bp_none encountered\n"));
5878 case bp_hardware_watchpoint:
5879 case bp_read_watchpoint:
5880 case bp_access_watchpoint:
5882 struct watchpoint *w = (struct watchpoint *) b;
5884 /* Field 4, the address, is omitted (which makes the columns
5885 not line up too nicely with the headers, but the effect
5886 is relatively readable). */
5887 if (opts.addressprint)
5888 ui_out_field_skip (uiout, "addr");
5890 ui_out_field_string (uiout, "what", w->exp_string);
5895 case bp_hardware_breakpoint:
5899 case bp_longjmp_resume:
5900 case bp_longjmp_call_dummy:
5902 case bp_exception_resume:
5903 case bp_step_resume:
5904 case bp_hp_step_resume:
5905 case bp_watchpoint_scope:
5907 case bp_std_terminate:
5908 case bp_shlib_event:
5909 case bp_thread_event:
5910 case bp_overlay_event:
5911 case bp_longjmp_master:
5912 case bp_std_terminate_master:
5913 case bp_exception_master:
5915 case bp_fast_tracepoint:
5916 case bp_static_tracepoint:
5919 case bp_gnu_ifunc_resolver:
5920 case bp_gnu_ifunc_resolver_return:
5921 if (opts.addressprint)
5924 if (header_of_multiple)
5925 ui_out_field_string (uiout, "addr", "<MULTIPLE>");
5926 else if (b->loc == NULL || loc->shlib_disabled)
5927 ui_out_field_string (uiout, "addr", "<PENDING>");
5929 ui_out_field_core_addr (uiout, "addr",
5930 loc->gdbarch, loc->address);
5933 if (!header_of_multiple)
5934 print_breakpoint_location (b, loc);
5941 /* For backward compatibility, don't display inferiors unless there
5944 && !header_of_multiple
5946 || (!gdbarch_has_global_breakpoints (target_gdbarch ())
5947 && (number_of_program_spaces () > 1
5948 || number_of_inferiors () > 1)
5949 /* LOC is for existing B, it cannot be in
5950 moribund_locations and thus having NULL OWNER. */
5951 && loc->owner->type != bp_catchpoint)))
5953 struct inferior *inf;
5956 for (inf = inferior_list; inf != NULL; inf = inf->next)
5958 if (inf->pspace == loc->pspace)
5963 ui_out_text (uiout, " inf ");
5966 ui_out_text (uiout, ", ");
5967 ui_out_text (uiout, plongest (inf->num));
5972 if (!part_of_multiple)
5974 if (b->thread != -1)
5976 /* FIXME: This seems to be redundant and lost here; see the
5977 "stop only in" line a little further down. */
5978 ui_out_text (uiout, " thread ");
5979 ui_out_field_int (uiout, "thread", b->thread);
5981 else if (b->task != 0)
5983 ui_out_text (uiout, " task ");
5984 ui_out_field_int (uiout, "task", b->task);
5988 ui_out_text (uiout, "\n");
5990 if (!part_of_multiple)
5991 b->ops->print_one_detail (b, uiout);
5993 if (part_of_multiple && frame_id_p (b->frame_id))
5996 ui_out_text (uiout, "\tstop only in stack frame at ");
5997 /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside
5999 ui_out_field_core_addr (uiout, "frame",
6000 b->gdbarch, b->frame_id.stack_addr);
6001 ui_out_text (uiout, "\n");
6004 if (!part_of_multiple && b->cond_string)
6007 if (is_tracepoint (b))
6008 ui_out_text (uiout, "\ttrace only if ");
6010 ui_out_text (uiout, "\tstop only if ");
6011 ui_out_field_string (uiout, "cond", b->cond_string);
6013 /* Print whether the target is doing the breakpoint's condition
6014 evaluation. If GDB is doing the evaluation, don't print anything. */
6015 if (is_breakpoint (b)
6016 && breakpoint_condition_evaluation_mode ()
6017 == condition_evaluation_target)
6019 ui_out_text (uiout, " (");
6020 ui_out_field_string (uiout, "evaluated-by",
6021 bp_condition_evaluator (b));
6022 ui_out_text (uiout, " evals)");
6024 ui_out_text (uiout, "\n");
6027 if (!part_of_multiple && b->thread != -1)
6029 /* FIXME should make an annotation for this. */
6030 ui_out_text (uiout, "\tstop only in thread ");
6031 ui_out_field_int (uiout, "thread", b->thread);
6032 ui_out_text (uiout, "\n");
6035 if (!part_of_multiple)
6039 /* FIXME should make an annotation for this. */
6040 if (is_catchpoint (b))
6041 ui_out_text (uiout, "\tcatchpoint");
6042 else if (is_tracepoint (b))
6043 ui_out_text (uiout, "\ttracepoint");
6045 ui_out_text (uiout, "\tbreakpoint");
6046 ui_out_text (uiout, " already hit ");
6047 ui_out_field_int (uiout, "times", b->hit_count);
6048 if (b->hit_count == 1)
6049 ui_out_text (uiout, " time\n");
6051 ui_out_text (uiout, " times\n");
6055 /* Output the count also if it is zero, but only if this is mi. */
6056 if (ui_out_is_mi_like_p (uiout))
6057 ui_out_field_int (uiout, "times", b->hit_count);
6061 if (!part_of_multiple && b->ignore_count)
6064 ui_out_text (uiout, "\tignore next ");
6065 ui_out_field_int (uiout, "ignore", b->ignore_count);
6066 ui_out_text (uiout, " hits\n");
6069 /* Note that an enable count of 1 corresponds to "enable once"
6070 behavior, which is reported by the combination of enablement and
6071 disposition, so we don't need to mention it here. */
6072 if (!part_of_multiple && b->enable_count > 1)
6075 ui_out_text (uiout, "\tdisable after ");
6076 /* Tweak the wording to clarify that ignore and enable counts
6077 are distinct, and have additive effect. */
6078 if (b->ignore_count)
6079 ui_out_text (uiout, "additional ");
6081 ui_out_text (uiout, "next ");
6082 ui_out_field_int (uiout, "enable", b->enable_count);
6083 ui_out_text (uiout, " hits\n");
6086 if (!part_of_multiple && is_tracepoint (b))
6088 struct tracepoint *tp = (struct tracepoint *) b;
6090 if (tp->traceframe_usage)
6092 ui_out_text (uiout, "\ttrace buffer usage ");
6093 ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage);
6094 ui_out_text (uiout, " bytes\n");
6098 l = b->commands ? b->commands->commands : NULL;
6099 if (!part_of_multiple && l)
6101 struct cleanup *script_chain;
6104 script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script");
6105 print_command_lines (uiout, l, 4);
6106 do_cleanups (script_chain);
6109 if (is_tracepoint (b))
6111 struct tracepoint *t = (struct tracepoint *) b;
6113 if (!part_of_multiple && t->pass_count)
6115 annotate_field (10);
6116 ui_out_text (uiout, "\tpass count ");
6117 ui_out_field_int (uiout, "pass", t->pass_count);
6118 ui_out_text (uiout, " \n");
6121 /* Don't display it when tracepoint or tracepoint location is
6123 if (!header_of_multiple && loc != NULL && !loc->shlib_disabled)
6125 annotate_field (11);
6127 if (ui_out_is_mi_like_p (uiout))
6128 ui_out_field_string (uiout, "installed",
6129 loc->inserted ? "y" : "n");
6133 ui_out_text (uiout, "\t");
6135 ui_out_text (uiout, "\tnot ");
6136 ui_out_text (uiout, "installed on target\n");
6141 if (ui_out_is_mi_like_p (uiout) && !part_of_multiple)
6143 if (is_watchpoint (b))
6145 struct watchpoint *w = (struct watchpoint *) b;
6147 ui_out_field_string (uiout, "original-location", w->exp_string);
6149 else if (b->addr_string)
6150 ui_out_field_string (uiout, "original-location", b->addr_string);
6155 print_one_breakpoint (struct breakpoint *b,
6156 struct bp_location **last_loc,
6159 struct cleanup *bkpt_chain;
6160 struct ui_out *uiout = current_uiout;
6162 bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt");
6164 print_one_breakpoint_location (b, NULL, 0, last_loc, allflag);
6165 do_cleanups (bkpt_chain);
6167 /* If this breakpoint has custom print function,
6168 it's already printed. Otherwise, print individual
6169 locations, if any. */
6170 if (b->ops == NULL || b->ops->print_one == NULL)
6172 /* If breakpoint has a single location that is disabled, we
6173 print it as if it had several locations, since otherwise it's
6174 hard to represent "breakpoint enabled, location disabled"
6177 Note that while hardware watchpoints have several locations
6178 internally, that's not a property exposed to user. */
6180 && !is_hardware_watchpoint (b)
6181 && (b->loc->next || !b->loc->enabled))
6183 struct bp_location *loc;
6186 for (loc = b->loc; loc; loc = loc->next, ++n)
6188 struct cleanup *inner2 =
6189 make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
6190 print_one_breakpoint_location (b, loc, n, last_loc, allflag);
6191 do_cleanups (inner2);
6198 breakpoint_address_bits (struct breakpoint *b)
6200 int print_address_bits = 0;
6201 struct bp_location *loc;
6203 for (loc = b->loc; loc; loc = loc->next)
6207 /* Software watchpoints that aren't watching memory don't have
6208 an address to print. */
6209 if (b->type == bp_watchpoint && loc->watchpoint_type == -1)
6212 addr_bit = gdbarch_addr_bit (loc->gdbarch);
6213 if (addr_bit > print_address_bits)
6214 print_address_bits = addr_bit;
6217 return print_address_bits;
6220 struct captured_breakpoint_query_args
6226 do_captured_breakpoint_query (struct ui_out *uiout, void *data)
6228 struct captured_breakpoint_query_args *args = data;
6229 struct breakpoint *b;
6230 struct bp_location *dummy_loc = NULL;
6234 if (args->bnum == b->number)
6236 print_one_breakpoint (b, &dummy_loc, 0);
6244 gdb_breakpoint_query (struct ui_out *uiout, int bnum,
6245 char **error_message)
6247 struct captured_breakpoint_query_args args;
6250 /* For the moment we don't trust print_one_breakpoint() to not throw
6252 if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args,
6253 error_message, RETURN_MASK_ALL) < 0)
6259 /* Return true if this breakpoint was set by the user, false if it is
6260 internal or momentary. */
6263 user_breakpoint_p (struct breakpoint *b)
6265 return b->number > 0;
6268 /* Print information on user settable breakpoint (watchpoint, etc)
6269 number BNUM. If BNUM is -1 print all user-settable breakpoints.
6270 If ALLFLAG is non-zero, include non-user-settable breakpoints. If
6271 FILTER is non-NULL, call it on each breakpoint and only include the
6272 ones for which it returns non-zero. Return the total number of
6273 breakpoints listed. */
6276 breakpoint_1 (char *args, int allflag,
6277 int (*filter) (const struct breakpoint *))
6279 struct breakpoint *b;
6280 struct bp_location *last_loc = NULL;
6281 int nr_printable_breakpoints;
6282 struct cleanup *bkpttbl_chain;
6283 struct value_print_options opts;
6284 int print_address_bits = 0;
6285 int print_type_col_width = 14;
6286 struct ui_out *uiout = current_uiout;
6288 get_user_print_options (&opts);
6290 /* Compute the number of rows in the table, as well as the size
6291 required for address fields. */
6292 nr_printable_breakpoints = 0;
6295 /* If we have a filter, only list the breakpoints it accepts. */
6296 if (filter && !filter (b))
6299 /* If we have an "args" string, it is a list of breakpoints to
6300 accept. Skip the others. */
6301 if (args != NULL && *args != '\0')
6303 if (allflag && parse_and_eval_long (args) != b->number)
6305 if (!allflag && !number_is_in_list (args, b->number))
6309 if (allflag || user_breakpoint_p (b))
6311 int addr_bit, type_len;
6313 addr_bit = breakpoint_address_bits (b);
6314 if (addr_bit > print_address_bits)
6315 print_address_bits = addr_bit;
6317 type_len = strlen (bptype_string (b->type));
6318 if (type_len > print_type_col_width)
6319 print_type_col_width = type_len;
6321 nr_printable_breakpoints++;
6325 if (opts.addressprint)
6327 = make_cleanup_ui_out_table_begin_end (uiout, 6,
6328 nr_printable_breakpoints,
6332 = make_cleanup_ui_out_table_begin_end (uiout, 5,
6333 nr_printable_breakpoints,
6336 if (nr_printable_breakpoints > 0)
6337 annotate_breakpoints_headers ();
6338 if (nr_printable_breakpoints > 0)
6340 ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */
6341 if (nr_printable_breakpoints > 0)
6343 ui_out_table_header (uiout, print_type_col_width, ui_left,
6344 "type", "Type"); /* 2 */
6345 if (nr_printable_breakpoints > 0)
6347 ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */
6348 if (nr_printable_breakpoints > 0)
6350 ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */
6351 if (opts.addressprint)
6353 if (nr_printable_breakpoints > 0)
6355 if (print_address_bits <= 32)
6356 ui_out_table_header (uiout, 10, ui_left,
6357 "addr", "Address"); /* 5 */
6359 ui_out_table_header (uiout, 18, ui_left,
6360 "addr", "Address"); /* 5 */
6362 if (nr_printable_breakpoints > 0)
6364 ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */
6365 ui_out_table_body (uiout);
6366 if (nr_printable_breakpoints > 0)
6367 annotate_breakpoints_table ();
6372 /* If we have a filter, only list the breakpoints it accepts. */
6373 if (filter && !filter (b))
6376 /* If we have an "args" string, it is a list of breakpoints to
6377 accept. Skip the others. */
6379 if (args != NULL && *args != '\0')
6381 if (allflag) /* maintenance info breakpoint */
6383 if (parse_and_eval_long (args) != b->number)
6386 else /* all others */
6388 if (!number_is_in_list (args, b->number))
6392 /* We only print out user settable breakpoints unless the
6394 if (allflag || user_breakpoint_p (b))
6395 print_one_breakpoint (b, &last_loc, allflag);
6398 do_cleanups (bkpttbl_chain);
6400 if (nr_printable_breakpoints == 0)
6402 /* If there's a filter, let the caller decide how to report
6406 if (args == NULL || *args == '\0')
6407 ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n");
6409 ui_out_message (uiout, 0,
6410 "No breakpoint or watchpoint matching '%s'.\n",
6416 if (last_loc && !server_command)
6417 set_next_address (last_loc->gdbarch, last_loc->address);
6420 /* FIXME? Should this be moved up so that it is only called when
6421 there have been breakpoints? */
6422 annotate_breakpoints_table_end ();
6424 return nr_printable_breakpoints;
6427 /* Display the value of default-collect in a way that is generally
6428 compatible with the breakpoint list. */
6431 default_collect_info (void)
6433 struct ui_out *uiout = current_uiout;
6435 /* If it has no value (which is frequently the case), say nothing; a
6436 message like "No default-collect." gets in user's face when it's
6438 if (!*default_collect)
6441 /* The following phrase lines up nicely with per-tracepoint collect
6443 ui_out_text (uiout, "default collect ");
6444 ui_out_field_string (uiout, "default-collect", default_collect);
6445 ui_out_text (uiout, " \n");
6449 breakpoints_info (char *args, int from_tty)
6451 breakpoint_1 (args, 0, NULL);
6453 default_collect_info ();
6457 watchpoints_info (char *args, int from_tty)
6459 int num_printed = breakpoint_1 (args, 0, is_watchpoint);
6460 struct ui_out *uiout = current_uiout;
6462 if (num_printed == 0)
6464 if (args == NULL || *args == '\0')
6465 ui_out_message (uiout, 0, "No watchpoints.\n");
6467 ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args);
6472 maintenance_info_breakpoints (char *args, int from_tty)
6474 breakpoint_1 (args, 1, NULL);
6476 default_collect_info ();
6480 breakpoint_has_pc (struct breakpoint *b,
6481 struct program_space *pspace,
6482 CORE_ADDR pc, struct obj_section *section)
6484 struct bp_location *bl = b->loc;
6486 for (; bl; bl = bl->next)
6488 if (bl->pspace == pspace
6489 && bl->address == pc
6490 && (!overlay_debugging || bl->section == section))
6496 /* Print a message describing any user-breakpoints set at PC. This
6497 concerns with logical breakpoints, so we match program spaces, not
6501 describe_other_breakpoints (struct gdbarch *gdbarch,
6502 struct program_space *pspace, CORE_ADDR pc,
6503 struct obj_section *section, int thread)
6506 struct breakpoint *b;
6509 others += (user_breakpoint_p (b)
6510 && breakpoint_has_pc (b, pspace, pc, section));
6514 printf_filtered (_("Note: breakpoint "));
6515 else /* if (others == ???) */
6516 printf_filtered (_("Note: breakpoints "));
6518 if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section))
6521 printf_filtered ("%d", b->number);
6522 if (b->thread == -1 && thread != -1)
6523 printf_filtered (" (all threads)");
6524 else if (b->thread != -1)
6525 printf_filtered (" (thread %d)", b->thread);
6526 printf_filtered ("%s%s ",
6527 ((b->enable_state == bp_disabled
6528 || b->enable_state == bp_call_disabled)
6530 : b->enable_state == bp_permanent
6534 : ((others == 1) ? " and" : ""));
6536 printf_filtered (_("also set at pc "));
6537 fputs_filtered (paddress (gdbarch, pc), gdb_stdout);
6538 printf_filtered (".\n");
6543 /* Return true iff it is meaningful to use the address member of
6544 BPT. For some breakpoint types, the address member is irrelevant
6545 and it makes no sense to attempt to compare it to other addresses
6546 (or use it for any other purpose either).
6548 More specifically, each of the following breakpoint types will
6549 always have a zero valued address and we don't want to mark
6550 breakpoints of any of these types to be a duplicate of an actual
6551 breakpoint at address zero:
6559 breakpoint_address_is_meaningful (struct breakpoint *bpt)
6561 enum bptype type = bpt->type;
6563 return (type != bp_watchpoint && type != bp_catchpoint);
6566 /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns
6567 true if LOC1 and LOC2 represent the same watchpoint location. */
6570 watchpoint_locations_match (struct bp_location *loc1,
6571 struct bp_location *loc2)
6573 struct watchpoint *w1 = (struct watchpoint *) loc1->owner;
6574 struct watchpoint *w2 = (struct watchpoint *) loc2->owner;
6576 /* Both of them must exist. */
6577 gdb_assert (w1 != NULL);
6578 gdb_assert (w2 != NULL);
6580 /* If the target can evaluate the condition expression in hardware,
6581 then we we need to insert both watchpoints even if they are at
6582 the same place. Otherwise the watchpoint will only trigger when
6583 the condition of whichever watchpoint was inserted evaluates to
6584 true, not giving a chance for GDB to check the condition of the
6585 other watchpoint. */
6587 && target_can_accel_watchpoint_condition (loc1->address,
6589 loc1->watchpoint_type,
6592 && target_can_accel_watchpoint_condition (loc2->address,
6594 loc2->watchpoint_type,
6598 /* Note that this checks the owner's type, not the location's. In
6599 case the target does not support read watchpoints, but does
6600 support access watchpoints, we'll have bp_read_watchpoint
6601 watchpoints with hw_access locations. Those should be considered
6602 duplicates of hw_read locations. The hw_read locations will
6603 become hw_access locations later. */
6604 return (loc1->owner->type == loc2->owner->type
6605 && loc1->pspace->aspace == loc2->pspace->aspace
6606 && loc1->address == loc2->address
6607 && loc1->length == loc2->length);
6610 /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
6611 same breakpoint location. In most targets, this can only be true
6612 if ASPACE1 matches ASPACE2. On targets that have global
6613 breakpoints, the address space doesn't really matter. */
6616 breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1,
6617 struct address_space *aspace2, CORE_ADDR addr2)
6619 return ((gdbarch_has_global_breakpoints (target_gdbarch ())
6620 || aspace1 == aspace2)
6624 /* Returns true if {ASPACE2,ADDR2} falls within the range determined by
6625 {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1
6626 matches ASPACE2. On targets that have global breakpoints, the address
6627 space doesn't really matter. */
6630 breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1,
6631 int len1, struct address_space *aspace2,
6634 return ((gdbarch_has_global_breakpoints (target_gdbarch ())
6635 || aspace1 == aspace2)
6636 && addr2 >= addr1 && addr2 < addr1 + len1);
6639 /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be
6640 a ranged breakpoint. In most targets, a match happens only if ASPACE
6641 matches the breakpoint's address space. On targets that have global
6642 breakpoints, the address space doesn't really matter. */
6645 breakpoint_location_address_match (struct bp_location *bl,
6646 struct address_space *aspace,
6649 return (breakpoint_address_match (bl->pspace->aspace, bl->address,
6652 && breakpoint_address_match_range (bl->pspace->aspace,
6653 bl->address, bl->length,
6657 /* If LOC1 and LOC2's owners are not tracepoints, returns false directly.
6658 Then, if LOC1 and LOC2 represent the same tracepoint location, returns
6659 true, otherwise returns false. */
6662 tracepoint_locations_match (struct bp_location *loc1,
6663 struct bp_location *loc2)
6665 if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner))
6666 /* Since tracepoint locations are never duplicated with others', tracepoint
6667 locations at the same address of different tracepoints are regarded as
6668 different locations. */
6669 return (loc1->address == loc2->address && loc1->owner == loc2->owner);
6674 /* Assuming LOC1 and LOC2's types' have meaningful target addresses
6675 (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2
6676 represent the same location. */
6679 breakpoint_locations_match (struct bp_location *loc1,
6680 struct bp_location *loc2)
6682 int hw_point1, hw_point2;
6684 /* Both of them must not be in moribund_locations. */
6685 gdb_assert (loc1->owner != NULL);
6686 gdb_assert (loc2->owner != NULL);
6688 hw_point1 = is_hardware_watchpoint (loc1->owner);
6689 hw_point2 = is_hardware_watchpoint (loc2->owner);
6691 if (hw_point1 != hw_point2)
6694 return watchpoint_locations_match (loc1, loc2);
6695 else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner))
6696 return tracepoint_locations_match (loc1, loc2);
6698 /* We compare bp_location.length in order to cover ranged breakpoints. */
6699 return (breakpoint_address_match (loc1->pspace->aspace, loc1->address,
6700 loc2->pspace->aspace, loc2->address)
6701 && loc1->length == loc2->length);
6705 breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr,
6706 int bnum, int have_bnum)
6708 /* The longest string possibly returned by hex_string_custom
6709 is 50 chars. These must be at least that big for safety. */
6713 strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8));
6714 strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8));
6716 warning (_("Breakpoint %d address previously adjusted from %s to %s."),
6717 bnum, astr1, astr2);
6719 warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2);
6722 /* Adjust a breakpoint's address to account for architectural
6723 constraints on breakpoint placement. Return the adjusted address.
6724 Note: Very few targets require this kind of adjustment. For most
6725 targets, this function is simply the identity function. */
6728 adjust_breakpoint_address (struct gdbarch *gdbarch,
6729 CORE_ADDR bpaddr, enum bptype bptype)
6731 if (!gdbarch_adjust_breakpoint_address_p (gdbarch))
6733 /* Very few targets need any kind of breakpoint adjustment. */
6736 else if (bptype == bp_watchpoint
6737 || bptype == bp_hardware_watchpoint
6738 || bptype == bp_read_watchpoint
6739 || bptype == bp_access_watchpoint
6740 || bptype == bp_catchpoint)
6742 /* Watchpoints and the various bp_catch_* eventpoints should not
6743 have their addresses modified. */
6748 CORE_ADDR adjusted_bpaddr;
6750 /* Some targets have architectural constraints on the placement
6751 of breakpoint instructions. Obtain the adjusted address. */
6752 adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr);
6754 /* An adjusted breakpoint address can significantly alter
6755 a user's expectations. Print a warning if an adjustment
6757 if (adjusted_bpaddr != bpaddr)
6758 breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0);
6760 return adjusted_bpaddr;
6765 init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops,
6766 struct breakpoint *owner)
6768 memset (loc, 0, sizeof (*loc));
6770 gdb_assert (ops != NULL);
6775 loc->cond_bytecode = NULL;
6776 loc->shlib_disabled = 0;
6779 switch (owner->type)
6785 case bp_longjmp_resume:
6786 case bp_longjmp_call_dummy:
6788 case bp_exception_resume:
6789 case bp_step_resume:
6790 case bp_hp_step_resume:
6791 case bp_watchpoint_scope:
6793 case bp_std_terminate:
6794 case bp_shlib_event:
6795 case bp_thread_event:
6796 case bp_overlay_event:
6798 case bp_longjmp_master:
6799 case bp_std_terminate_master:
6800 case bp_exception_master:
6801 case bp_gnu_ifunc_resolver:
6802 case bp_gnu_ifunc_resolver_return:
6804 loc->loc_type = bp_loc_software_breakpoint;
6805 mark_breakpoint_location_modified (loc);
6807 case bp_hardware_breakpoint:
6808 loc->loc_type = bp_loc_hardware_breakpoint;
6809 mark_breakpoint_location_modified (loc);
6811 case bp_hardware_watchpoint:
6812 case bp_read_watchpoint:
6813 case bp_access_watchpoint:
6814 loc->loc_type = bp_loc_hardware_watchpoint;
6819 case bp_fast_tracepoint:
6820 case bp_static_tracepoint:
6821 loc->loc_type = bp_loc_other;
6824 internal_error (__FILE__, __LINE__, _("unknown breakpoint type"));
6830 /* Allocate a struct bp_location. */
6832 static struct bp_location *
6833 allocate_bp_location (struct breakpoint *bpt)
6835 return bpt->ops->allocate_location (bpt);
6839 free_bp_location (struct bp_location *loc)
6841 loc->ops->dtor (loc);
6845 /* Increment reference count. */
6848 incref_bp_location (struct bp_location *bl)
6853 /* Decrement reference count. If the reference count reaches 0,
6854 destroy the bp_location. Sets *BLP to NULL. */
6857 decref_bp_location (struct bp_location **blp)
6859 gdb_assert ((*blp)->refc > 0);
6861 if (--(*blp)->refc == 0)
6862 free_bp_location (*blp);
6866 /* Add breakpoint B at the end of the global breakpoint chain. */
6869 add_to_breakpoint_chain (struct breakpoint *b)
6871 struct breakpoint *b1;
6873 /* Add this breakpoint to the end of the chain so that a list of
6874 breakpoints will come out in order of increasing numbers. */
6876 b1 = breakpoint_chain;
6878 breakpoint_chain = b;
6887 /* Initializes breakpoint B with type BPTYPE and no locations yet. */
6890 init_raw_breakpoint_without_location (struct breakpoint *b,
6891 struct gdbarch *gdbarch,
6893 const struct breakpoint_ops *ops)
6895 memset (b, 0, sizeof (*b));
6897 gdb_assert (ops != NULL);
6901 b->gdbarch = gdbarch;
6902 b->language = current_language->la_language;
6903 b->input_radix = input_radix;
6905 b->enable_state = bp_enabled;
6908 b->ignore_count = 0;
6910 b->frame_id = null_frame_id;
6911 b->condition_not_parsed = 0;
6912 b->py_bp_object = NULL;
6913 b->related_breakpoint = b;
6916 /* Helper to set_raw_breakpoint below. Creates a breakpoint
6917 that has type BPTYPE and has no locations as yet. */
6919 static struct breakpoint *
6920 set_raw_breakpoint_without_location (struct gdbarch *gdbarch,
6922 const struct breakpoint_ops *ops)
6924 struct breakpoint *b = XNEW (struct breakpoint);
6926 init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);
6927 add_to_breakpoint_chain (b);
6931 /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function
6932 resolutions should be made as the user specified the location explicitly
6936 set_breakpoint_location_function (struct bp_location *loc, int explicit_loc)
6938 gdb_assert (loc->owner != NULL);
6940 if (loc->owner->type == bp_breakpoint
6941 || loc->owner->type == bp_hardware_breakpoint
6942 || is_tracepoint (loc->owner))
6945 const char *function_name;
6946 CORE_ADDR func_addr;
6948 find_pc_partial_function_gnu_ifunc (loc->address, &function_name,
6949 &func_addr, NULL, &is_gnu_ifunc);
6951 if (is_gnu_ifunc && !explicit_loc)
6953 struct breakpoint *b = loc->owner;
6955 gdb_assert (loc->pspace == current_program_space);
6956 if (gnu_ifunc_resolve_name (function_name,
6957 &loc->requested_address))
6959 /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */
6960 loc->address = adjust_breakpoint_address (loc->gdbarch,
6961 loc->requested_address,
6964 else if (b->type == bp_breakpoint && b->loc == loc
6965 && loc->next == NULL && b->related_breakpoint == b)
6967 /* Create only the whole new breakpoint of this type but do not
6968 mess more complicated breakpoints with multiple locations. */
6969 b->type = bp_gnu_ifunc_resolver;
6970 /* Remember the resolver's address for use by the return
6972 loc->related_address = func_addr;
6977 loc->function_name = xstrdup (function_name);
6981 /* Attempt to determine architecture of location identified by SAL. */
6983 get_sal_arch (struct symtab_and_line sal)
6986 return get_objfile_arch (sal.section->objfile);
6988 return get_objfile_arch (sal.symtab->objfile);
6993 /* Low level routine for partially initializing a breakpoint of type
6994 BPTYPE. The newly created breakpoint's address, section, source
6995 file name, and line number are provided by SAL.
6997 It is expected that the caller will complete the initialization of
6998 the newly created breakpoint struct as well as output any status
6999 information regarding the creation of a new breakpoint. */
7002 init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch,
7003 struct symtab_and_line sal, enum bptype bptype,
7004 const struct breakpoint_ops *ops)
7006 init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);
7008 add_location_to_breakpoint (b, &sal);
7010 if (bptype != bp_catchpoint)
7011 gdb_assert (sal.pspace != NULL);
7013 /* Store the program space that was used to set the breakpoint,
7014 except for ordinary breakpoints, which are independent of the
7016 if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint)
7017 b->pspace = sal.pspace;
7019 annotate_breakpoints_changed ();
7022 /* set_raw_breakpoint is a low level routine for allocating and
7023 partially initializing a breakpoint of type BPTYPE. The newly
7024 created breakpoint's address, section, source file name, and line
7025 number are provided by SAL. The newly created and partially
7026 initialized breakpoint is added to the breakpoint chain and
7027 is also returned as the value of this function.
7029 It is expected that the caller will complete the initialization of
7030 the newly created breakpoint struct as well as output any status
7031 information regarding the creation of a new breakpoint. In
7032 particular, set_raw_breakpoint does NOT set the breakpoint
7033 number! Care should be taken to not allow an error to occur
7034 prior to completing the initialization of the breakpoint. If this
7035 should happen, a bogus breakpoint will be left on the chain. */
7038 set_raw_breakpoint (struct gdbarch *gdbarch,
7039 struct symtab_and_line sal, enum bptype bptype,
7040 const struct breakpoint_ops *ops)
7042 struct breakpoint *b = XNEW (struct breakpoint);
7044 init_raw_breakpoint (b, gdbarch, sal, bptype, ops);
7045 add_to_breakpoint_chain (b);
7050 /* Note that the breakpoint object B describes a permanent breakpoint
7051 instruction, hard-wired into the inferior's code. */
7053 make_breakpoint_permanent (struct breakpoint *b)
7055 struct bp_location *bl;
7057 b->enable_state = bp_permanent;
7059 /* By definition, permanent breakpoints are already present in the
7060 code. Mark all locations as inserted. For now,
7061 make_breakpoint_permanent is called in just one place, so it's
7062 hard to say if it's reasonable to have permanent breakpoint with
7063 multiple locations or not, but it's easy to implement. */
7064 for (bl = b->loc; bl; bl = bl->next)
7068 /* Call this routine when stepping and nexting to enable a breakpoint
7069 if we do a longjmp() or 'throw' in TP. FRAME is the frame which
7070 initiated the operation. */
7073 set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame)
7075 struct breakpoint *b, *b_tmp;
7076 int thread = tp->num;
7078 /* To avoid having to rescan all objfile symbols at every step,
7079 we maintain a list of continually-inserted but always disabled
7080 longjmp "master" breakpoints. Here, we simply create momentary
7081 clones of those and enable them for the requested thread. */
7082 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7083 if (b->pspace == current_program_space
7084 && (b->type == bp_longjmp_master
7085 || b->type == bp_exception_master))
7087 enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception;
7088 struct breakpoint *clone;
7090 /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again
7091 after their removal. */
7092 clone = momentary_breakpoint_from_master (b, type,
7093 &longjmp_breakpoint_ops);
7094 clone->thread = thread;
7097 tp->initiating_frame = frame;
7100 /* Delete all longjmp breakpoints from THREAD. */
7102 delete_longjmp_breakpoint (int thread)
7104 struct breakpoint *b, *b_tmp;
7106 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7107 if (b->type == bp_longjmp || b->type == bp_exception)
7109 if (b->thread == thread)
7110 delete_breakpoint (b);
7115 delete_longjmp_breakpoint_at_next_stop (int thread)
7117 struct breakpoint *b, *b_tmp;
7119 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7120 if (b->type == bp_longjmp || b->type == bp_exception)
7122 if (b->thread == thread)
7123 b->disposition = disp_del_at_next_stop;
7127 /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for
7128 INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return
7129 pointer to any of them. Return NULL if this system cannot place longjmp
7133 set_longjmp_breakpoint_for_call_dummy (void)
7135 struct breakpoint *b, *retval = NULL;
7138 if (b->pspace == current_program_space && b->type == bp_longjmp_master)
7140 struct breakpoint *new_b;
7142 new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy,
7143 &momentary_breakpoint_ops);
7144 new_b->thread = pid_to_thread_id (inferior_ptid);
7146 /* Link NEW_B into the chain of RETVAL breakpoints. */
7148 gdb_assert (new_b->related_breakpoint == new_b);
7151 new_b->related_breakpoint = retval;
7152 while (retval->related_breakpoint != new_b->related_breakpoint)
7153 retval = retval->related_breakpoint;
7154 retval->related_breakpoint = new_b;
7160 /* Verify all existing dummy frames and their associated breakpoints for
7161 THREAD. Remove those which can no longer be found in the current frame
7164 You should call this function only at places where it is safe to currently
7165 unwind the whole stack. Failed stack unwind would discard live dummy
7169 check_longjmp_breakpoint_for_call_dummy (int thread)
7171 struct breakpoint *b, *b_tmp;
7173 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7174 if (b->type == bp_longjmp_call_dummy && b->thread == thread)
7176 struct breakpoint *dummy_b = b->related_breakpoint;
7178 while (dummy_b != b && dummy_b->type != bp_call_dummy)
7179 dummy_b = dummy_b->related_breakpoint;
7180 if (dummy_b->type != bp_call_dummy
7181 || frame_find_by_id (dummy_b->frame_id) != NULL)
7184 dummy_frame_discard (dummy_b->frame_id);
7186 while (b->related_breakpoint != b)
7188 if (b_tmp == b->related_breakpoint)
7189 b_tmp = b->related_breakpoint->next;
7190 delete_breakpoint (b->related_breakpoint);
7192 delete_breakpoint (b);
7197 enable_overlay_breakpoints (void)
7199 struct breakpoint *b;
7202 if (b->type == bp_overlay_event)
7204 b->enable_state = bp_enabled;
7205 update_global_location_list (1);
7206 overlay_events_enabled = 1;
7211 disable_overlay_breakpoints (void)
7213 struct breakpoint *b;
7216 if (b->type == bp_overlay_event)
7218 b->enable_state = bp_disabled;
7219 update_global_location_list (0);
7220 overlay_events_enabled = 0;
7224 /* Set an active std::terminate breakpoint for each std::terminate
7225 master breakpoint. */
7227 set_std_terminate_breakpoint (void)
7229 struct breakpoint *b, *b_tmp;
7231 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7232 if (b->pspace == current_program_space
7233 && b->type == bp_std_terminate_master)
7235 momentary_breakpoint_from_master (b, bp_std_terminate,
7236 &momentary_breakpoint_ops);
7240 /* Delete all the std::terminate breakpoints. */
7242 delete_std_terminate_breakpoint (void)
7244 struct breakpoint *b, *b_tmp;
7246 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7247 if (b->type == bp_std_terminate)
7248 delete_breakpoint (b);
7252 create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
7254 struct breakpoint *b;
7256 b = create_internal_breakpoint (gdbarch, address, bp_thread_event,
7257 &internal_breakpoint_ops);
7259 b->enable_state = bp_enabled;
7260 /* addr_string has to be used or breakpoint_re_set will delete me. */
7262 = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
7264 update_global_location_list_nothrow (1);
7270 remove_thread_event_breakpoints (void)
7272 struct breakpoint *b, *b_tmp;
7274 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7275 if (b->type == bp_thread_event
7276 && b->loc->pspace == current_program_space)
7277 delete_breakpoint (b);
7280 struct lang_and_radix
7286 /* Create a breakpoint for JIT code registration and unregistration. */
7289 create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
7291 struct breakpoint *b;
7293 b = create_internal_breakpoint (gdbarch, address, bp_jit_event,
7294 &internal_breakpoint_ops);
7295 update_global_location_list_nothrow (1);
7299 /* Remove JIT code registration and unregistration breakpoint(s). */
7302 remove_jit_event_breakpoints (void)
7304 struct breakpoint *b, *b_tmp;
7306 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7307 if (b->type == bp_jit_event
7308 && b->loc->pspace == current_program_space)
7309 delete_breakpoint (b);
7313 remove_solib_event_breakpoints (void)
7315 struct breakpoint *b, *b_tmp;
7317 ALL_BREAKPOINTS_SAFE (b, b_tmp)
7318 if (b->type == bp_shlib_event
7319 && b->loc->pspace == current_program_space)
7320 delete_breakpoint (b);
7324 create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
7326 struct breakpoint *b;
7328 b = create_internal_breakpoint (gdbarch, address, bp_shlib_event,
7329 &internal_breakpoint_ops);
7330 update_global_location_list_nothrow (1);
7334 /* Disable any breakpoints that are on code in shared libraries. Only
7335 apply to enabled breakpoints, disabled ones can just stay disabled. */
7338 disable_breakpoints_in_shlibs (void)
7340 struct bp_location *loc, **locp_tmp;
7342 ALL_BP_LOCATIONS (loc, locp_tmp)
7344 /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
7345 struct breakpoint *b = loc->owner;
7347 /* We apply the check to all breakpoints, including disabled for
7348 those with loc->duplicate set. This is so that when breakpoint
7349 becomes enabled, or the duplicate is removed, gdb will try to
7350 insert all breakpoints. If we don't set shlib_disabled here,
7351 we'll try to insert those breakpoints and fail. */
7352 if (((b->type == bp_breakpoint)
7353 || (b->type == bp_jit_event)
7354 || (b->type == bp_hardware_breakpoint)
7355 || (is_tracepoint (b)))
7356 && loc->pspace == current_program_space
7357 && !loc->shlib_disabled
7359 && PC_SOLIB (loc->address)
7361 && solib_name_from_address (loc->pspace, loc->address)
7365 loc->shlib_disabled = 1;
7370 /* Disable any breakpoints and tracepoints that are in an unloaded shared
7371 library. Only apply to enabled breakpoints, disabled ones can just stay
7375 disable_breakpoints_in_unloaded_shlib (struct so_list *solib)
7377 struct bp_location *loc, **locp_tmp;
7378 int disabled_shlib_breaks = 0;
7380 /* SunOS a.out shared libraries are always mapped, so do not
7381 disable breakpoints; they will only be reported as unloaded
7382 through clear_solib when GDB discards its shared library
7383 list. See clear_solib for more information. */
7384 if (exec_bfd != NULL
7385 && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour)
7388 ALL_BP_LOCATIONS (loc, locp_tmp)
7390 /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
7391 struct breakpoint *b = loc->owner;
7393 if (solib->pspace == loc->pspace
7394 && !loc->shlib_disabled
7395 && (((b->type == bp_breakpoint
7396 || b->type == bp_jit_event
7397 || b->type == bp_hardware_breakpoint)
7398 && (loc->loc_type == bp_loc_hardware_breakpoint
7399 || loc->loc_type == bp_loc_software_breakpoint))
7400 || is_tracepoint (b))
7401 && solib_contains_address_p (solib, loc->address))
7403 loc->shlib_disabled = 1;
7404 /* At this point, we cannot rely on remove_breakpoint
7405 succeeding so we must mark the breakpoint as not inserted
7406 to prevent future errors occurring in remove_breakpoints. */
7409 /* This may cause duplicate notifications for the same breakpoint. */
7410 observer_notify_breakpoint_modified (b);
7412 if (!disabled_shlib_breaks)
7414 target_terminal_ours_for_output ();
7415 warning (_("Temporarily disabling breakpoints "
7416 "for unloaded shared library \"%s\""),
7419 disabled_shlib_breaks = 1;
7424 /* FORK & VFORK catchpoints. */
7426 /* An instance of this type is used to represent a fork or vfork
7427 catchpoint. It includes a "struct breakpoint" as a kind of base
7428 class; users downcast to "struct breakpoint *" when needed. A
7429 breakpoint is really of this type iff its ops pointer points to
7430 CATCH_FORK_BREAKPOINT_OPS. */
7432 struct fork_catchpoint
7434 /* The base class. */
7435 struct breakpoint base;
7437 /* Process id of a child process whose forking triggered this
7438 catchpoint. This field is only valid immediately after this
7439 catchpoint has triggered. */
7440 ptid_t forked_inferior_pid;
7443 /* Implement the "insert" breakpoint_ops method for fork
7447 insert_catch_fork (struct bp_location *bl)
7449 return target_insert_fork_catchpoint (PIDGET (inferior_ptid));
7452 /* Implement the "remove" breakpoint_ops method for fork
7456 remove_catch_fork (struct bp_location *bl)
7458 return target_remove_fork_catchpoint (PIDGET (inferior_ptid));
7461 /* Implement the "breakpoint_hit" breakpoint_ops method for fork
7465 breakpoint_hit_catch_fork (const struct bp_location *bl,
7466 struct address_space *aspace, CORE_ADDR bp_addr,
7467 const struct target_waitstatus *ws)
7469 struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;
7471 if (ws->kind != TARGET_WAITKIND_FORKED)
7474 c->forked_inferior_pid = ws->value.related_pid;
7478 /* Implement the "print_it" breakpoint_ops method for fork
7481 static enum print_stop_action
7482 print_it_catch_fork (bpstat bs)
7484 struct ui_out *uiout = current_uiout;
7485 struct breakpoint *b = bs->breakpoint_at;
7486 struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at;
7488 annotate_catchpoint (b->number);
7489 if (b->disposition == disp_del)
7490 ui_out_text (uiout, "\nTemporary catchpoint ");
7492 ui_out_text (uiout, "\nCatchpoint ");
7493 if (ui_out_is_mi_like_p (uiout))
7495 ui_out_field_string (uiout, "reason",
7496 async_reason_lookup (EXEC_ASYNC_FORK));
7497 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
7499 ui_out_field_int (uiout, "bkptno", b->number);
7500 ui_out_text (uiout, " (forked process ");
7501 ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid));
7502 ui_out_text (uiout, "), ");
7503 return PRINT_SRC_AND_LOC;
7506 /* Implement the "print_one" breakpoint_ops method for fork
7510 print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc)
7512 struct fork_catchpoint *c = (struct fork_catchpoint *) b;
7513 struct value_print_options opts;
7514 struct ui_out *uiout = current_uiout;
7516 get_user_print_options (&opts);
7518 /* Field 4, the address, is omitted (which makes the columns not
7519 line up too nicely with the headers, but the effect is relatively
7521 if (opts.addressprint)
7522 ui_out_field_skip (uiout, "addr");
7524 ui_out_text (uiout, "fork");
7525 if (!ptid_equal (c->forked_inferior_pid, null_ptid))
7527 ui_out_text (uiout, ", process ");
7528 ui_out_field_int (uiout, "what",
7529 ptid_get_pid (c->forked_inferior_pid));
7530 ui_out_spaces (uiout, 1);
7534 /* Implement the "print_mention" breakpoint_ops method for fork
7538 print_mention_catch_fork (struct breakpoint *b)
7540 printf_filtered (_("Catchpoint %d (fork)"), b->number);
7543 /* Implement the "print_recreate" breakpoint_ops method for fork
7547 print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp)
7549 fprintf_unfiltered (fp, "catch fork");
7550 print_recreate_thread (b, fp);
7553 /* The breakpoint_ops structure to be used in fork catchpoints. */
7555 static struct breakpoint_ops catch_fork_breakpoint_ops;
7557 /* Implement the "insert" breakpoint_ops method for vfork
7561 insert_catch_vfork (struct bp_location *bl)
7563 return target_insert_vfork_catchpoint (PIDGET (inferior_ptid));
7566 /* Implement the "remove" breakpoint_ops method for vfork
7570 remove_catch_vfork (struct bp_location *bl)
7572 return target_remove_vfork_catchpoint (PIDGET (inferior_ptid));
7575 /* Implement the "breakpoint_hit" breakpoint_ops method for vfork
7579 breakpoint_hit_catch_vfork (const struct bp_location *bl,
7580 struct address_space *aspace, CORE_ADDR bp_addr,
7581 const struct target_waitstatus *ws)
7583 struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;
7585 if (ws->kind != TARGET_WAITKIND_VFORKED)
7588 c->forked_inferior_pid = ws->value.related_pid;
7592 /* Implement the "print_it" breakpoint_ops method for vfork
7595 static enum print_stop_action
7596 print_it_catch_vfork (bpstat bs)
7598 struct ui_out *uiout = current_uiout;
7599 struct breakpoint *b = bs->breakpoint_at;
7600 struct fork_catchpoint *c = (struct fork_catchpoint *) b;
7602 annotate_catchpoint (b->number);
7603 if (b->disposition == disp_del)
7604 ui_out_text (uiout, "\nTemporary catchpoint ");
7606 ui_out_text (uiout, "\nCatchpoint ");
7607 if (ui_out_is_mi_like_p (uiout))
7609 ui_out_field_string (uiout, "reason",
7610 async_reason_lookup (EXEC_ASYNC_VFORK));
7611 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
7613 ui_out_field_int (uiout, "bkptno", b->number);
7614 ui_out_text (uiout, " (vforked process ");
7615 ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid));
7616 ui_out_text (uiout, "), ");
7617 return PRINT_SRC_AND_LOC;
7620 /* Implement the "print_one" breakpoint_ops method for vfork
7624 print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc)
7626 struct fork_catchpoint *c = (struct fork_catchpoint *) b;
7627 struct value_print_options opts;
7628 struct ui_out *uiout = current_uiout;
7630 get_user_print_options (&opts);
7631 /* Field 4, the address, is omitted (which makes the columns not
7632 line up too nicely with the headers, but the effect is relatively
7634 if (opts.addressprint)
7635 ui_out_field_skip (uiout, "addr");
7637 ui_out_text (uiout, "vfork");
7638 if (!ptid_equal (c->forked_inferior_pid, null_ptid))
7640 ui_out_text (uiout, ", process ");
7641 ui_out_field_int (uiout, "what",
7642 ptid_get_pid (c->forked_inferior_pid));
7643 ui_out_spaces (uiout, 1);
7647 /* Implement the "print_mention" breakpoint_ops method for vfork
7651 print_mention_catch_vfork (struct breakpoint *b)
7653 printf_filtered (_("Catchpoint %d (vfork)"), b->number);
7656 /* Implement the "print_recreate" breakpoint_ops method for vfork
7660 print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp)
7662 fprintf_unfiltered (fp, "catch vfork");
7663 print_recreate_thread (b, fp);
7666 /* The breakpoint_ops structure to be used in vfork catchpoints. */
7668 static struct breakpoint_ops catch_vfork_breakpoint_ops;
7670 /* An instance of this type is used to represent an solib catchpoint.
7671 It includes a "struct breakpoint" as a kind of base class; users
7672 downcast to "struct breakpoint *" when needed. A breakpoint is
7673 really of this type iff its ops pointer points to
7674 CATCH_SOLIB_BREAKPOINT_OPS. */
7676 struct solib_catchpoint
7678 /* The base class. */
7679 struct breakpoint base;
7681 /* True for "catch load", false for "catch unload". */
7682 unsigned char is_load;
7684 /* Regular expression to match, if any. COMPILED is only valid when
7685 REGEX is non-NULL. */
7691 dtor_catch_solib (struct breakpoint *b)
7693 struct solib_catchpoint *self = (struct solib_catchpoint *) b;
7696 regfree (&self->compiled);
7697 xfree (self->regex);
7699 base_breakpoint_ops.dtor (b);
7703 insert_catch_solib (struct bp_location *ignore)
7709 remove_catch_solib (struct bp_location *ignore)
7715 breakpoint_hit_catch_solib (const struct bp_location *bl,
7716 struct address_space *aspace,
7718 const struct target_waitstatus *ws)
7720 struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner;
7721 struct breakpoint *other;
7723 if (ws->kind == TARGET_WAITKIND_LOADED)
7726 ALL_BREAKPOINTS (other)
7728 struct bp_location *other_bl;
7730 if (other == bl->owner)
7733 if (other->type != bp_shlib_event)
7736 if (self->base.pspace != NULL && other->pspace != self->base.pspace)
7739 for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next)
7741 if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws))
7750 check_status_catch_solib (struct bpstats *bs)
7752 struct solib_catchpoint *self
7753 = (struct solib_catchpoint *) bs->breakpoint_at;
7758 struct so_list *iter;
7761 VEC_iterate (so_list_ptr, current_program_space->added_solibs,
7766 || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0)
7775 VEC_iterate (char_ptr, current_program_space->deleted_solibs,
7780 || regexec (&self->compiled, iter, 0, NULL, 0) == 0)
7786 bs->print_it = print_it_noop;
7789 static enum print_stop_action
7790 print_it_catch_solib (bpstat bs)
7792 struct breakpoint *b = bs->breakpoint_at;
7793 struct ui_out *uiout = current_uiout;
7795 annotate_catchpoint (b->number);
7796 if (b->disposition == disp_del)
7797 ui_out_text (uiout, "\nTemporary catchpoint ");
7799 ui_out_text (uiout, "\nCatchpoint ");
7800 ui_out_field_int (uiout, "bkptno", b->number);
7801 ui_out_text (uiout, "\n");
7802 if (ui_out_is_mi_like_p (uiout))
7803 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
7804 print_solib_event (1);
7805 return PRINT_SRC_AND_LOC;
7809 print_one_catch_solib (struct breakpoint *b, struct bp_location **locs)
7811 struct solib_catchpoint *self = (struct solib_catchpoint *) b;
7812 struct value_print_options opts;
7813 struct ui_out *uiout = current_uiout;
7816 get_user_print_options (&opts);
7817 /* Field 4, the address, is omitted (which makes the columns not
7818 line up too nicely with the headers, but the effect is relatively
7820 if (opts.addressprint)
7823 ui_out_field_skip (uiout, "addr");
7830 msg = xstrprintf (_("load of library matching %s"), self->regex);
7832 msg = xstrdup (_("load of library"));
7837 msg = xstrprintf (_("unload of library matching %s"), self->regex);
7839 msg = xstrdup (_("unload of library"));
7841 ui_out_field_string (uiout, "what", msg);
7846 print_mention_catch_solib (struct breakpoint *b)
7848 struct solib_catchpoint *self = (struct solib_catchpoint *) b;
7850 printf_filtered (_("Catchpoint %d (%s)"), b->number,
7851 self->is_load ? "load" : "unload");
7855 print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp)
7857 struct solib_catchpoint *self = (struct solib_catchpoint *) b;
7859 fprintf_unfiltered (fp, "%s %s",
7860 b->disposition == disp_del ? "tcatch" : "catch",
7861 self->is_load ? "load" : "unload");
7863 fprintf_unfiltered (fp, " %s", self->regex);
7864 fprintf_unfiltered (fp, "\n");
7867 static struct breakpoint_ops catch_solib_breakpoint_ops;
7869 /* Shared helper function (MI and CLI) for creating and installing
7870 a shared object event catchpoint. If IS_LOAD is non-zero then
7871 the events to be caught are load events, otherwise they are
7872 unload events. If IS_TEMP is non-zero the catchpoint is a
7873 temporary one. If ENABLED is non-zero the catchpoint is
7874 created in an enabled state. */
7877 add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled)
7879 struct solib_catchpoint *c;
7880 struct gdbarch *gdbarch = get_current_arch ();
7881 struct cleanup *cleanup;
7885 arg = skip_spaces (arg);
7887 c = XCNEW (struct solib_catchpoint);
7888 cleanup = make_cleanup (xfree, c);
7894 errcode = regcomp (&c->compiled, arg, REG_NOSUB);
7897 char *err = get_regcomp_error (errcode, &c->compiled);
7899 make_cleanup (xfree, err);
7900 error (_("Invalid regexp (%s): %s"), err, arg);
7902 c->regex = xstrdup (arg);
7905 c->is_load = is_load;
7906 init_catchpoint (&c->base, gdbarch, is_temp, NULL,
7907 &catch_solib_breakpoint_ops);
7909 c->base.enable_state = enabled ? bp_enabled : bp_disabled;
7911 discard_cleanups (cleanup);
7912 install_breakpoint (0, &c->base, 1);
7915 /* A helper function that does all the work for "catch load" and
7919 catch_load_or_unload (char *arg, int from_tty, int is_load,
7920 struct cmd_list_element *command)
7923 const int enabled = 1;
7925 tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
7927 add_solib_catchpoint (arg, is_load, tempflag, enabled);
7931 catch_load_command_1 (char *arg, int from_tty,
7932 struct cmd_list_element *command)
7934 catch_load_or_unload (arg, from_tty, 1, command);
7938 catch_unload_command_1 (char *arg, int from_tty,
7939 struct cmd_list_element *command)
7941 catch_load_or_unload (arg, from_tty, 0, command);
7946 /* An instance of this type is used to represent a syscall catchpoint.
7947 It includes a "struct breakpoint" as a kind of base class; users
7948 downcast to "struct breakpoint *" when needed. A breakpoint is
7949 really of this type iff its ops pointer points to
7950 CATCH_SYSCALL_BREAKPOINT_OPS. */
7952 struct syscall_catchpoint
7954 /* The base class. */
7955 struct breakpoint base;
7957 /* Syscall numbers used for the 'catch syscall' feature. If no
7958 syscall has been specified for filtering, its value is NULL.
7959 Otherwise, it holds a list of all syscalls to be caught. The
7960 list elements are allocated with xmalloc. */
7961 VEC(int) *syscalls_to_be_caught;
7964 /* Implement the "dtor" breakpoint_ops method for syscall
7968 dtor_catch_syscall (struct breakpoint *b)
7970 struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
7972 VEC_free (int, c->syscalls_to_be_caught);
7974 base_breakpoint_ops.dtor (b);
7977 static const struct inferior_data *catch_syscall_inferior_data = NULL;
7979 struct catch_syscall_inferior_data
7981 /* We keep a count of the number of times the user has requested a
7982 particular syscall to be tracked, and pass this information to the
7983 target. This lets capable targets implement filtering directly. */
7985 /* Number of times that "any" syscall is requested. */
7986 int any_syscall_count;
7988 /* Count of each system call. */
7989 VEC(int) *syscalls_counts;
7991 /* This counts all syscall catch requests, so we can readily determine
7992 if any catching is necessary. */
7993 int total_syscalls_count;
7996 static struct catch_syscall_inferior_data*
7997 get_catch_syscall_inferior_data (struct inferior *inf)
7999 struct catch_syscall_inferior_data *inf_data;
8001 inf_data = inferior_data (inf, catch_syscall_inferior_data);
8002 if (inf_data == NULL)
8004 inf_data = XZALLOC (struct catch_syscall_inferior_data);
8005 set_inferior_data (inf, catch_syscall_inferior_data, inf_data);
8012 catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg)
8018 /* Implement the "insert" breakpoint_ops method for syscall
8022 insert_catch_syscall (struct bp_location *bl)
8024 struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner;
8025 struct inferior *inf = current_inferior ();
8026 struct catch_syscall_inferior_data *inf_data
8027 = get_catch_syscall_inferior_data (inf);
8029 ++inf_data->total_syscalls_count;
8030 if (!c->syscalls_to_be_caught)
8031 ++inf_data->any_syscall_count;
8037 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8042 if (iter >= VEC_length (int, inf_data->syscalls_counts))
8044 int old_size = VEC_length (int, inf_data->syscalls_counts);
8045 uintptr_t vec_addr_offset
8046 = old_size * ((uintptr_t) sizeof (int));
8048 VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1);
8049 vec_addr = ((uintptr_t) VEC_address (int,
8050 inf_data->syscalls_counts)
8052 memset ((void *) vec_addr, 0,
8053 (iter + 1 - old_size) * sizeof (int));
8055 elem = VEC_index (int, inf_data->syscalls_counts, iter);
8056 VEC_replace (int, inf_data->syscalls_counts, iter, ++elem);
8060 return target_set_syscall_catchpoint (PIDGET (inferior_ptid),
8061 inf_data->total_syscalls_count != 0,
8062 inf_data->any_syscall_count,
8064 inf_data->syscalls_counts),
8066 inf_data->syscalls_counts));
8069 /* Implement the "remove" breakpoint_ops method for syscall
8073 remove_catch_syscall (struct bp_location *bl)
8075 struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner;
8076 struct inferior *inf = current_inferior ();
8077 struct catch_syscall_inferior_data *inf_data
8078 = get_catch_syscall_inferior_data (inf);
8080 --inf_data->total_syscalls_count;
8081 if (!c->syscalls_to_be_caught)
8082 --inf_data->any_syscall_count;
8088 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8092 if (iter >= VEC_length (int, inf_data->syscalls_counts))
8093 /* Shouldn't happen. */
8095 elem = VEC_index (int, inf_data->syscalls_counts, iter);
8096 VEC_replace (int, inf_data->syscalls_counts, iter, --elem);
8100 return target_set_syscall_catchpoint (PIDGET (inferior_ptid),
8101 inf_data->total_syscalls_count != 0,
8102 inf_data->any_syscall_count,
8104 inf_data->syscalls_counts),
8106 inf_data->syscalls_counts));
8109 /* Implement the "breakpoint_hit" breakpoint_ops method for syscall
8113 breakpoint_hit_catch_syscall (const struct bp_location *bl,
8114 struct address_space *aspace, CORE_ADDR bp_addr,
8115 const struct target_waitstatus *ws)
8117 /* We must check if we are catching specific syscalls in this
8118 breakpoint. If we are, then we must guarantee that the called
8119 syscall is the same syscall we are catching. */
8120 int syscall_number = 0;
8121 const struct syscall_catchpoint *c
8122 = (const struct syscall_catchpoint *) bl->owner;
8124 if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY
8125 && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN)
8128 syscall_number = ws->value.syscall_number;
8130 /* Now, checking if the syscall is the same. */
8131 if (c->syscalls_to_be_caught)
8136 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8138 if (syscall_number == iter)
8148 /* Implement the "print_it" breakpoint_ops method for syscall
8151 static enum print_stop_action
8152 print_it_catch_syscall (bpstat bs)
8154 struct ui_out *uiout = current_uiout;
8155 struct breakpoint *b = bs->breakpoint_at;
8156 /* These are needed because we want to know in which state a
8157 syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY
8158 or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we
8159 must print "called syscall" or "returned from syscall". */
8161 struct target_waitstatus last;
8164 get_last_target_status (&ptid, &last);
8166 get_syscall_by_number (last.value.syscall_number, &s);
8168 annotate_catchpoint (b->number);
8170 if (b->disposition == disp_del)
8171 ui_out_text (uiout, "\nTemporary catchpoint ");
8173 ui_out_text (uiout, "\nCatchpoint ");
8174 if (ui_out_is_mi_like_p (uiout))
8176 ui_out_field_string (uiout, "reason",
8177 async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY
8178 ? EXEC_ASYNC_SYSCALL_ENTRY
8179 : EXEC_ASYNC_SYSCALL_RETURN));
8180 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
8182 ui_out_field_int (uiout, "bkptno", b->number);
8184 if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY)
8185 ui_out_text (uiout, " (call to syscall ");
8187 ui_out_text (uiout, " (returned from syscall ");
8189 if (s.name == NULL || ui_out_is_mi_like_p (uiout))
8190 ui_out_field_int (uiout, "syscall-number", last.value.syscall_number);
8192 ui_out_field_string (uiout, "syscall-name", s.name);
8194 ui_out_text (uiout, "), ");
8196 return PRINT_SRC_AND_LOC;
8199 /* Implement the "print_one" breakpoint_ops method for syscall
8203 print_one_catch_syscall (struct breakpoint *b,
8204 struct bp_location **last_loc)
8206 struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
8207 struct value_print_options opts;
8208 struct ui_out *uiout = current_uiout;
8210 get_user_print_options (&opts);
8211 /* Field 4, the address, is omitted (which makes the columns not
8212 line up too nicely with the headers, but the effect is relatively
8214 if (opts.addressprint)
8215 ui_out_field_skip (uiout, "addr");
8218 if (c->syscalls_to_be_caught
8219 && VEC_length (int, c->syscalls_to_be_caught) > 1)
8220 ui_out_text (uiout, "syscalls \"");
8222 ui_out_text (uiout, "syscall \"");
8224 if (c->syscalls_to_be_caught)
8227 char *text = xstrprintf ("%s", "");
8230 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8235 get_syscall_by_number (iter, &s);
8238 text = xstrprintf ("%s%s, ", text, s.name);
8240 text = xstrprintf ("%s%d, ", text, iter);
8242 /* We have to xfree the last 'text' (now stored at 'x')
8243 because xstrprintf dynamically allocates new space for it
8247 /* Remove the last comma. */
8248 text[strlen (text) - 2] = '\0';
8249 ui_out_field_string (uiout, "what", text);
8252 ui_out_field_string (uiout, "what", "<any syscall>");
8253 ui_out_text (uiout, "\" ");
8256 /* Implement the "print_mention" breakpoint_ops method for syscall
8260 print_mention_catch_syscall (struct breakpoint *b)
8262 struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
8264 if (c->syscalls_to_be_caught)
8268 if (VEC_length (int, c->syscalls_to_be_caught) > 1)
8269 printf_filtered (_("Catchpoint %d (syscalls"), b->number);
8271 printf_filtered (_("Catchpoint %d (syscall"), b->number);
8274 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8278 get_syscall_by_number (iter, &s);
8281 printf_filtered (" '%s' [%d]", s.name, s.number);
8283 printf_filtered (" %d", s.number);
8285 printf_filtered (")");
8288 printf_filtered (_("Catchpoint %d (any syscall)"),
8292 /* Implement the "print_recreate" breakpoint_ops method for syscall
8296 print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp)
8298 struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
8300 fprintf_unfiltered (fp, "catch syscall");
8302 if (c->syscalls_to_be_caught)
8307 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
8312 get_syscall_by_number (iter, &s);
8314 fprintf_unfiltered (fp, " %s", s.name);
8316 fprintf_unfiltered (fp, " %d", s.number);
8319 print_recreate_thread (b, fp);
8322 /* The breakpoint_ops structure to be used in syscall catchpoints. */
8324 static struct breakpoint_ops catch_syscall_breakpoint_ops;
8326 /* Returns non-zero if 'b' is a syscall catchpoint. */
8329 syscall_catchpoint_p (struct breakpoint *b)
8331 return (b->ops == &catch_syscall_breakpoint_ops);
8334 /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG
8335 is non-zero, then make the breakpoint temporary. If COND_STRING is
8336 not NULL, then store it in the breakpoint. OPS, if not NULL, is
8337 the breakpoint_ops structure associated to the catchpoint. */
8340 init_catchpoint (struct breakpoint *b,
8341 struct gdbarch *gdbarch, int tempflag,
8343 const struct breakpoint_ops *ops)
8345 struct symtab_and_line sal;
8348 sal.pspace = current_program_space;
8350 init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops);
8352 b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string);
8353 b->disposition = tempflag ? disp_del : disp_donttouch;
8357 install_breakpoint (int internal, struct breakpoint *b, int update_gll)
8359 add_to_breakpoint_chain (b);
8360 set_breakpoint_number (internal, b);
8361 if (is_tracepoint (b))
8362 set_tracepoint_count (breakpoint_count);
8365 observer_notify_breakpoint_created (b);
8368 update_global_location_list (1);
8372 create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
8373 int tempflag, char *cond_string,
8374 const struct breakpoint_ops *ops)
8376 struct fork_catchpoint *c = XNEW (struct fork_catchpoint);
8378 init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops);
8380 c->forked_inferior_pid = null_ptid;
8382 install_breakpoint (0, &c->base, 1);
8385 /* Exec catchpoints. */
8387 /* An instance of this type is used to represent an exec catchpoint.
8388 It includes a "struct breakpoint" as a kind of base class; users
8389 downcast to "struct breakpoint *" when needed. A breakpoint is
8390 really of this type iff its ops pointer points to
8391 CATCH_EXEC_BREAKPOINT_OPS. */
8393 struct exec_catchpoint
8395 /* The base class. */
8396 struct breakpoint base;
8398 /* Filename of a program whose exec triggered this catchpoint.
8399 This field is only valid immediately after this catchpoint has
8401 char *exec_pathname;
8404 /* Implement the "dtor" breakpoint_ops method for exec
8408 dtor_catch_exec (struct breakpoint *b)
8410 struct exec_catchpoint *c = (struct exec_catchpoint *) b;
8412 xfree (c->exec_pathname);
8414 base_breakpoint_ops.dtor (b);
8418 insert_catch_exec (struct bp_location *bl)
8420 return target_insert_exec_catchpoint (PIDGET (inferior_ptid));
8424 remove_catch_exec (struct bp_location *bl)
8426 return target_remove_exec_catchpoint (PIDGET (inferior_ptid));
8430 breakpoint_hit_catch_exec (const struct bp_location *bl,
8431 struct address_space *aspace, CORE_ADDR bp_addr,
8432 const struct target_waitstatus *ws)
8434 struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner;
8436 if (ws->kind != TARGET_WAITKIND_EXECD)
8439 c->exec_pathname = xstrdup (ws->value.execd_pathname);
8443 static enum print_stop_action
8444 print_it_catch_exec (bpstat bs)
8446 struct ui_out *uiout = current_uiout;
8447 struct breakpoint *b = bs->breakpoint_at;
8448 struct exec_catchpoint *c = (struct exec_catchpoint *) b;
8450 annotate_catchpoint (b->number);
8451 if (b->disposition == disp_del)
8452 ui_out_text (uiout, "\nTemporary catchpoint ");
8454 ui_out_text (uiout, "\nCatchpoint ");
8455 if (ui_out_is_mi_like_p (uiout))
8457 ui_out_field_string (uiout, "reason",
8458 async_reason_lookup (EXEC_ASYNC_EXEC));
8459 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
8461 ui_out_field_int (uiout, "bkptno", b->number);
8462 ui_out_text (uiout, " (exec'd ");
8463 ui_out_field_string (uiout, "new-exec", c->exec_pathname);
8464 ui_out_text (uiout, "), ");
8466 return PRINT_SRC_AND_LOC;
8470 print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc)
8472 struct exec_catchpoint *c = (struct exec_catchpoint *) b;
8473 struct value_print_options opts;
8474 struct ui_out *uiout = current_uiout;
8476 get_user_print_options (&opts);
8478 /* Field 4, the address, is omitted (which makes the columns
8479 not line up too nicely with the headers, but the effect
8480 is relatively readable). */
8481 if (opts.addressprint)
8482 ui_out_field_skip (uiout, "addr");
8484 ui_out_text (uiout, "exec");
8485 if (c->exec_pathname != NULL)
8487 ui_out_text (uiout, ", program \"");
8488 ui_out_field_string (uiout, "what", c->exec_pathname);
8489 ui_out_text (uiout, "\" ");
8494 print_mention_catch_exec (struct breakpoint *b)
8496 printf_filtered (_("Catchpoint %d (exec)"), b->number);
8499 /* Implement the "print_recreate" breakpoint_ops method for exec
8503 print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp)
8505 fprintf_unfiltered (fp, "catch exec");
8506 print_recreate_thread (b, fp);
8509 static struct breakpoint_ops catch_exec_breakpoint_ops;
8512 create_syscall_event_catchpoint (int tempflag, VEC(int) *filter,
8513 const struct breakpoint_ops *ops)
8515 struct syscall_catchpoint *c;
8516 struct gdbarch *gdbarch = get_current_arch ();
8518 c = XNEW (struct syscall_catchpoint);
8519 init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops);
8520 c->syscalls_to_be_caught = filter;
8522 install_breakpoint (0, &c->base, 1);
8526 hw_breakpoint_used_count (void)
8529 struct breakpoint *b;
8530 struct bp_location *bl;
8534 if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b))
8535 for (bl = b->loc; bl; bl = bl->next)
8537 /* Special types of hardware breakpoints may use more than
8539 i += b->ops->resources_needed (bl);
8546 /* Returns the resources B would use if it were a hardware
8550 hw_watchpoint_use_count (struct breakpoint *b)
8553 struct bp_location *bl;
8555 if (!breakpoint_enabled (b))
8558 for (bl = b->loc; bl; bl = bl->next)
8560 /* Special types of hardware watchpoints may use more than
8562 i += b->ops->resources_needed (bl);
8568 /* Returns the sum the used resources of all hardware watchpoints of
8569 type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED
8570 the sum of the used resources of all hardware watchpoints of other
8571 types _not_ TYPE. */
8574 hw_watchpoint_used_count_others (struct breakpoint *except,
8575 enum bptype type, int *other_type_used)
8578 struct breakpoint *b;
8580 *other_type_used = 0;
8585 if (!breakpoint_enabled (b))
8588 if (b->type == type)
8589 i += hw_watchpoint_use_count (b);
8590 else if (is_hardware_watchpoint (b))
8591 *other_type_used = 1;
8598 disable_watchpoints_before_interactive_call_start (void)
8600 struct breakpoint *b;
8604 if (is_watchpoint (b) && breakpoint_enabled (b))
8606 b->enable_state = bp_call_disabled;
8607 update_global_location_list (0);
8613 enable_watchpoints_after_interactive_call_stop (void)
8615 struct breakpoint *b;
8619 if (is_watchpoint (b) && b->enable_state == bp_call_disabled)
8621 b->enable_state = bp_enabled;
8622 update_global_location_list (1);
8628 disable_breakpoints_before_startup (void)
8630 current_program_space->executing_startup = 1;
8631 update_global_location_list (0);
8635 enable_breakpoints_after_startup (void)
8637 current_program_space->executing_startup = 0;
8638 breakpoint_re_set ();
8642 /* Set a breakpoint that will evaporate an end of command
8643 at address specified by SAL.
8644 Restrict it to frame FRAME if FRAME is nonzero. */
8647 set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal,
8648 struct frame_id frame_id, enum bptype type)
8650 struct breakpoint *b;
8652 /* If FRAME_ID is valid, it should be a real frame, not an inlined or
8654 gdb_assert (!frame_id_artificial_p (frame_id));
8656 b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops);
8657 b->enable_state = bp_enabled;
8658 b->disposition = disp_donttouch;
8659 b->frame_id = frame_id;
8661 /* If we're debugging a multi-threaded program, then we want
8662 momentary breakpoints to be active in only a single thread of
8664 if (in_thread_list (inferior_ptid))
8665 b->thread = pid_to_thread_id (inferior_ptid);
8667 update_global_location_list_nothrow (1);
8672 /* Make a momentary breakpoint based on the master breakpoint ORIG.
8673 The new breakpoint will have type TYPE, and use OPS as it
8676 static struct breakpoint *
8677 momentary_breakpoint_from_master (struct breakpoint *orig,
8679 const struct breakpoint_ops *ops)
8681 struct breakpoint *copy;
8683 copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops);
8684 copy->loc = allocate_bp_location (copy);
8685 set_breakpoint_location_function (copy->loc, 1);
8687 copy->loc->gdbarch = orig->loc->gdbarch;
8688 copy->loc->requested_address = orig->loc->requested_address;
8689 copy->loc->address = orig->loc->address;
8690 copy->loc->section = orig->loc->section;
8691 copy->loc->pspace = orig->loc->pspace;
8692 copy->loc->probe = orig->loc->probe;
8694 if (orig->loc->source_file != NULL)
8695 copy->loc->source_file = xstrdup (orig->loc->source_file);
8697 copy->loc->line_number = orig->loc->line_number;
8698 copy->frame_id = orig->frame_id;
8699 copy->thread = orig->thread;
8700 copy->pspace = orig->pspace;
8702 copy->enable_state = bp_enabled;
8703 copy->disposition = disp_donttouch;
8704 copy->number = internal_breakpoint_number--;
8706 update_global_location_list_nothrow (0);
8710 /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if
8714 clone_momentary_breakpoint (struct breakpoint *orig)
8716 /* If there's nothing to clone, then return nothing. */
8720 return momentary_breakpoint_from_master (orig, orig->type, orig->ops);
8724 set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc,
8727 struct symtab_and_line sal;
8729 sal = find_pc_line (pc, 0);
8731 sal.section = find_pc_overlay (pc);
8732 sal.explicit_pc = 1;
8734 return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type);
8738 /* Tell the user we have just set a breakpoint B. */
8741 mention (struct breakpoint *b)
8743 b->ops->print_mention (b);
8744 if (ui_out_is_mi_like_p (current_uiout))
8746 printf_filtered ("\n");
8750 static struct bp_location *
8751 add_location_to_breakpoint (struct breakpoint *b,
8752 const struct symtab_and_line *sal)
8754 struct bp_location *loc, **tmp;
8755 CORE_ADDR adjusted_address;
8756 struct gdbarch *loc_gdbarch = get_sal_arch (*sal);
8758 if (loc_gdbarch == NULL)
8759 loc_gdbarch = b->gdbarch;
8761 /* Adjust the breakpoint's address prior to allocating a location.
8762 Once we call allocate_bp_location(), that mostly uninitialized
8763 location will be placed on the location chain. Adjustment of the
8764 breakpoint may cause target_read_memory() to be called and we do
8765 not want its scan of the location chain to find a breakpoint and
8766 location that's only been partially initialized. */
8767 adjusted_address = adjust_breakpoint_address (loc_gdbarch,
8770 loc = allocate_bp_location (b);
8771 for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next))
8775 loc->requested_address = sal->pc;
8776 loc->address = adjusted_address;
8777 loc->pspace = sal->pspace;
8778 loc->probe = sal->probe;
8779 gdb_assert (loc->pspace != NULL);
8780 loc->section = sal->section;
8781 loc->gdbarch = loc_gdbarch;
8783 if (sal->symtab != NULL)
8784 loc->source_file = xstrdup (sal->symtab->filename);
8785 loc->line_number = sal->line;
8787 set_breakpoint_location_function (loc,
8788 sal->explicit_pc || sal->explicit_line);
8793 /* Return 1 if LOC is pointing to a permanent breakpoint,
8794 return 0 otherwise. */
8797 bp_loc_is_permanent (struct bp_location *loc)
8801 const gdb_byte *bpoint;
8802 gdb_byte *target_mem;
8803 struct cleanup *cleanup;
8806 gdb_assert (loc != NULL);
8808 addr = loc->address;
8809 bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len);
8811 /* Software breakpoints unsupported? */
8815 target_mem = alloca (len);
8817 /* Enable the automatic memory restoration from breakpoints while
8818 we read the memory. Otherwise we could say about our temporary
8819 breakpoints they are permanent. */
8820 cleanup = save_current_space_and_thread ();
8822 switch_to_program_space_and_thread (loc->pspace);
8823 make_show_memory_breakpoints_cleanup (0);
8825 if (target_read_memory (loc->address, target_mem, len) == 0
8826 && memcmp (target_mem, bpoint, len) == 0)
8829 do_cleanups (cleanup);
8834 /* Build a command list for the dprintf corresponding to the current
8835 settings of the dprintf style options. */
8838 update_dprintf_command_list (struct breakpoint *b)
8840 char *dprintf_args = b->extra_string;
8841 char *printf_line = NULL;
8846 dprintf_args = skip_spaces (dprintf_args);
8848 /* Allow a comma, as it may have terminated a location, but don't
8850 if (*dprintf_args == ',')
8852 dprintf_args = skip_spaces (dprintf_args);
8854 if (*dprintf_args != '"')
8855 error (_("Bad format string, missing '\"'."));
8857 if (strcmp (dprintf_style, dprintf_style_gdb) == 0)
8858 printf_line = xstrprintf ("printf %s", dprintf_args);
8859 else if (strcmp (dprintf_style, dprintf_style_call) == 0)
8861 if (!dprintf_function)
8862 error (_("No function supplied for dprintf call"));
8864 if (dprintf_channel && strlen (dprintf_channel) > 0)
8865 printf_line = xstrprintf ("call (void) %s (%s,%s)",
8870 printf_line = xstrprintf ("call (void) %s (%s)",
8874 else if (strcmp (dprintf_style, dprintf_style_agent) == 0)
8876 if (target_can_run_breakpoint_commands ())
8877 printf_line = xstrprintf ("agent-printf %s", dprintf_args);
8880 warning (_("Target cannot run dprintf commands, falling back to GDB printf"));
8881 printf_line = xstrprintf ("printf %s", dprintf_args);
8885 internal_error (__FILE__, __LINE__,
8886 _("Invalid dprintf style."));
8888 gdb_assert (printf_line != NULL);
8889 /* Manufacture a printf/continue sequence. */
8891 struct command_line *printf_cmd_line, *cont_cmd_line = NULL;
8893 if (strcmp (dprintf_style, dprintf_style_agent) != 0)
8895 cont_cmd_line = xmalloc (sizeof (struct command_line));
8896 cont_cmd_line->control_type = simple_control;
8897 cont_cmd_line->body_count = 0;
8898 cont_cmd_line->body_list = NULL;
8899 cont_cmd_line->next = NULL;
8900 cont_cmd_line->line = xstrdup ("continue");
8903 printf_cmd_line = xmalloc (sizeof (struct command_line));
8904 printf_cmd_line->control_type = simple_control;
8905 printf_cmd_line->body_count = 0;
8906 printf_cmd_line->body_list = NULL;
8907 printf_cmd_line->next = cont_cmd_line;
8908 printf_cmd_line->line = printf_line;
8910 breakpoint_set_commands (b, printf_cmd_line);
8914 /* Update all dprintf commands, making their command lists reflect
8915 current style settings. */
8918 update_dprintf_commands (char *args, int from_tty,
8919 struct cmd_list_element *c)
8921 struct breakpoint *b;
8925 if (b->type == bp_dprintf)
8926 update_dprintf_command_list (b);
8930 /* Create a breakpoint with SAL as location. Use ADDR_STRING
8931 as textual description of the location, and COND_STRING
8932 as condition expression. */
8935 init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
8936 struct symtabs_and_lines sals, char *addr_string,
8937 char *filter, char *cond_string,
8939 enum bptype type, enum bpdisp disposition,
8940 int thread, int task, int ignore_count,
8941 const struct breakpoint_ops *ops, int from_tty,
8942 int enabled, int internal, unsigned flags,
8943 int display_canonical)
8947 if (type == bp_hardware_breakpoint)
8949 int target_resources_ok;
8951 i = hw_breakpoint_used_count ();
8952 target_resources_ok =
8953 target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
8955 if (target_resources_ok == 0)
8956 error (_("No hardware breakpoint support in the target."));
8957 else if (target_resources_ok < 0)
8958 error (_("Hardware breakpoints used exceeds limit."));
8961 gdb_assert (sals.nelts > 0);
8963 for (i = 0; i < sals.nelts; ++i)
8965 struct symtab_and_line sal = sals.sals[i];
8966 struct bp_location *loc;
8970 struct gdbarch *loc_gdbarch = get_sal_arch (sal);
8972 loc_gdbarch = gdbarch;
8974 describe_other_breakpoints (loc_gdbarch,
8975 sal.pspace, sal.pc, sal.section, thread);
8980 init_raw_breakpoint (b, gdbarch, sal, type, ops);
8984 b->cond_string = cond_string;
8985 b->extra_string = extra_string;
8986 b->ignore_count = ignore_count;
8987 b->enable_state = enabled ? bp_enabled : bp_disabled;
8988 b->disposition = disposition;
8990 if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0)
8991 b->loc->inserted = 1;
8993 if (type == bp_static_tracepoint)
8995 struct tracepoint *t = (struct tracepoint *) b;
8996 struct static_tracepoint_marker marker;
8998 if (strace_marker_p (b))
9000 /* We already know the marker exists, otherwise, we
9001 wouldn't see a sal for it. */
9002 char *p = &addr_string[3];
9006 p = skip_spaces (p);
9008 endp = skip_to_space (p);
9010 marker_str = savestring (p, endp - p);
9011 t->static_trace_marker_id = marker_str;
9013 printf_filtered (_("Probed static tracepoint "
9015 t->static_trace_marker_id);
9017 else if (target_static_tracepoint_marker_at (sal.pc, &marker))
9019 t->static_trace_marker_id = xstrdup (marker.str_id);
9020 release_static_tracepoint_marker (&marker);
9022 printf_filtered (_("Probed static tracepoint "
9024 t->static_trace_marker_id);
9027 warning (_("Couldn't determine the static "
9028 "tracepoint marker to probe"));
9035 loc = add_location_to_breakpoint (b, &sal);
9036 if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0)
9040 if (bp_loc_is_permanent (loc))
9041 make_breakpoint_permanent (b);
9045 char *arg = b->cond_string;
9046 loc->cond = parse_exp_1 (&arg, loc->address,
9047 block_for_pc (loc->address), 0);
9049 error (_("Garbage '%s' follows condition"), arg);
9052 /* Dynamic printf requires and uses additional arguments on the
9053 command line, otherwise it's an error. */
9054 if (type == bp_dprintf)
9056 if (b->extra_string)
9057 update_dprintf_command_list (b);
9059 error (_("Format string required"));
9061 else if (b->extra_string)
9062 error (_("Garbage '%s' at end of command"), b->extra_string);
9065 b->display_canonical = display_canonical;
9067 b->addr_string = addr_string;
9069 /* addr_string has to be used or breakpoint_re_set will delete
9072 = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
9077 create_breakpoint_sal (struct gdbarch *gdbarch,
9078 struct symtabs_and_lines sals, char *addr_string,
9079 char *filter, char *cond_string,
9081 enum bptype type, enum bpdisp disposition,
9082 int thread, int task, int ignore_count,
9083 const struct breakpoint_ops *ops, int from_tty,
9084 int enabled, int internal, unsigned flags,
9085 int display_canonical)
9087 struct breakpoint *b;
9088 struct cleanup *old_chain;
9090 if (is_tracepoint_type (type))
9092 struct tracepoint *t;
9094 t = XCNEW (struct tracepoint);
9098 b = XNEW (struct breakpoint);
9100 old_chain = make_cleanup (xfree, b);
9102 init_breakpoint_sal (b, gdbarch,
9104 filter, cond_string, extra_string,
9106 thread, task, ignore_count,
9108 enabled, internal, flags,
9110 discard_cleanups (old_chain);
9112 install_breakpoint (internal, b, 0);
9115 /* Add SALS.nelts breakpoints to the breakpoint table. For each
9116 SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i]
9117 value. COND_STRING, if not NULL, specified the condition to be
9118 used for all breakpoints. Essentially the only case where
9119 SALS.nelts is not 1 is when we set a breakpoint on an overloaded
9120 function. In that case, it's still not possible to specify
9121 separate conditions for different overloaded functions, so
9122 we take just a single condition string.
9124 NOTE: If the function succeeds, the caller is expected to cleanup
9125 the arrays ADDR_STRING, COND_STRING, and SALS (but not the
9126 array contents). If the function fails (error() is called), the
9127 caller is expected to cleanups both the ADDR_STRING, COND_STRING,
9128 COND and SALS arrays and each of those arrays contents. */
9131 create_breakpoints_sal (struct gdbarch *gdbarch,
9132 struct linespec_result *canonical,
9133 char *cond_string, char *extra_string,
9134 enum bptype type, enum bpdisp disposition,
9135 int thread, int task, int ignore_count,
9136 const struct breakpoint_ops *ops, int from_tty,
9137 int enabled, int internal, unsigned flags)
9140 struct linespec_sals *lsal;
9142 if (canonical->pre_expanded)
9143 gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1);
9145 for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i)
9147 /* Note that 'addr_string' can be NULL in the case of a plain
9148 'break', without arguments. */
9149 char *addr_string = (canonical->addr_string
9150 ? xstrdup (canonical->addr_string)
9152 char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL;
9153 struct cleanup *inner = make_cleanup (xfree, addr_string);
9155 make_cleanup (xfree, filter_string);
9156 create_breakpoint_sal (gdbarch, lsal->sals,
9159 cond_string, extra_string,
9161 thread, task, ignore_count, ops,
9162 from_tty, enabled, internal, flags,
9163 canonical->special_display);
9164 discard_cleanups (inner);
9168 /* Parse ADDRESS which is assumed to be a SAL specification possibly
9169 followed by conditionals. On return, SALS contains an array of SAL
9170 addresses found. ADDR_STRING contains a vector of (canonical)
9171 address strings. ADDRESS points to the end of the SAL.
9173 The array and the line spec strings are allocated on the heap, it is
9174 the caller's responsibility to free them. */
9177 parse_breakpoint_sals (char **address,
9178 struct linespec_result *canonical)
9180 /* If no arg given, or if first arg is 'if ', use the default
9182 if ((*address) == NULL
9183 || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
9185 /* The last displayed codepoint, if it's valid, is our default breakpoint
9187 if (last_displayed_sal_is_valid ())
9189 struct linespec_sals lsal;
9190 struct symtab_and_line sal;
9193 init_sal (&sal); /* Initialize to zeroes. */
9194 lsal.sals.sals = (struct symtab_and_line *)
9195 xmalloc (sizeof (struct symtab_and_line));
9197 /* Set sal's pspace, pc, symtab, and line to the values
9198 corresponding to the last call to print_frame_info.
9199 Be sure to reinitialize LINE with NOTCURRENT == 0
9200 as the breakpoint line number is inappropriate otherwise.
9201 find_pc_line would adjust PC, re-set it back. */
9202 get_last_displayed_sal (&sal);
9204 sal = find_pc_line (pc, 0);
9206 /* "break" without arguments is equivalent to "break *PC"
9207 where PC is the last displayed codepoint's address. So
9208 make sure to set sal.explicit_pc to prevent GDB from
9209 trying to expand the list of sals to include all other
9210 instances with the same symtab and line. */
9212 sal.explicit_pc = 1;
9214 lsal.sals.sals[0] = sal;
9215 lsal.sals.nelts = 1;
9216 lsal.canonical = NULL;
9218 VEC_safe_push (linespec_sals, canonical->sals, &lsal);
9221 error (_("No default breakpoint address now."));
9225 struct symtab_and_line cursal = get_current_source_symtab_and_line ();
9227 /* Force almost all breakpoints to be in terms of the
9228 current_source_symtab (which is decode_line_1's default).
9229 This should produce the results we want almost all of the
9230 time while leaving default_breakpoint_* alone.
9232 ObjC: However, don't match an Objective-C method name which
9233 may have a '+' or '-' succeeded by a '['. */
9234 if (last_displayed_sal_is_valid ()
9236 || ((strchr ("+-", (*address)[0]) != NULL)
9237 && ((*address)[1] != '['))))
9238 decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
9239 get_last_displayed_symtab (),
9240 get_last_displayed_line (),
9241 canonical, NULL, NULL);
9243 decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
9244 cursal.symtab, cursal.line, canonical, NULL, NULL);
9249 /* Convert each SAL into a real PC. Verify that the PC can be
9250 inserted as a breakpoint. If it can't throw an error. */
9253 breakpoint_sals_to_pc (struct symtabs_and_lines *sals)
9257 for (i = 0; i < sals->nelts; i++)
9258 resolve_sal_pc (&sals->sals[i]);
9261 /* Fast tracepoints may have restrictions on valid locations. For
9262 instance, a fast tracepoint using a jump instead of a trap will
9263 likely have to overwrite more bytes than a trap would, and so can
9264 only be placed where the instruction is longer than the jump, or a
9265 multi-instruction sequence does not have a jump into the middle of
9269 check_fast_tracepoint_sals (struct gdbarch *gdbarch,
9270 struct symtabs_and_lines *sals)
9273 struct symtab_and_line *sal;
9275 struct cleanup *old_chain;
9277 for (i = 0; i < sals->nelts; i++)
9279 struct gdbarch *sarch;
9281 sal = &sals->sals[i];
9283 sarch = get_sal_arch (*sal);
9284 /* We fall back to GDBARCH if there is no architecture
9285 associated with SAL. */
9288 rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc,
9290 old_chain = make_cleanup (xfree, msg);
9293 error (_("May not have a fast tracepoint at 0x%s%s"),
9294 paddress (sarch, sal->pc), (msg ? msg : ""));
9296 do_cleanups (old_chain);
9300 /* Issue an invalid thread ID error. */
9302 static void ATTRIBUTE_NORETURN
9303 invalid_thread_id_error (int id)
9305 error (_("Unknown thread %d."), id);
9308 /* Given TOK, a string specification of condition and thread, as
9309 accepted by the 'break' command, extract the condition
9310 string and thread number and set *COND_STRING and *THREAD.
9311 PC identifies the context at which the condition should be parsed.
9312 If no condition is found, *COND_STRING is set to NULL.
9313 If no thread is found, *THREAD is set to -1. */
9316 find_condition_and_thread (char *tok, CORE_ADDR pc,
9317 char **cond_string, int *thread, int *task,
9320 *cond_string = NULL;
9329 char *cond_start = NULL;
9330 char *cond_end = NULL;
9332 tok = skip_spaces (tok);
9334 if ((*tok == '"' || *tok == ',') && rest)
9336 *rest = savestring (tok, strlen (tok));
9340 end_tok = skip_to_space (tok);
9342 toklen = end_tok - tok;
9344 if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
9346 struct expression *expr;
9348 tok = cond_start = end_tok + 1;
9349 expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0);
9352 *cond_string = savestring (cond_start, cond_end - cond_start);
9354 else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
9360 *thread = strtol (tok, &tok, 0);
9362 error (_("Junk after thread keyword."));
9363 if (!valid_thread_id (*thread))
9364 invalid_thread_id_error (*thread);
9366 else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0)
9372 *task = strtol (tok, &tok, 0);
9374 error (_("Junk after task keyword."));
9375 if (!valid_task_id (*task))
9376 error (_("Unknown task %d."), *task);
9380 *rest = savestring (tok, strlen (tok));
9384 error (_("Junk at end of arguments."));
9388 /* Decode a static tracepoint marker spec. */
9390 static struct symtabs_and_lines
9391 decode_static_tracepoint_spec (char **arg_p)
9393 VEC(static_tracepoint_marker_p) *markers = NULL;
9394 struct symtabs_and_lines sals;
9395 struct cleanup *old_chain;
9396 char *p = &(*arg_p)[3];
9401 p = skip_spaces (p);
9403 endp = skip_to_space (p);
9405 marker_str = savestring (p, endp - p);
9406 old_chain = make_cleanup (xfree, marker_str);
9408 markers = target_static_tracepoint_markers_by_strid (marker_str);
9409 if (VEC_empty(static_tracepoint_marker_p, markers))
9410 error (_("No known static tracepoint marker named %s"), marker_str);
9412 sals.nelts = VEC_length(static_tracepoint_marker_p, markers);
9413 sals.sals = xmalloc (sizeof *sals.sals * sals.nelts);
9415 for (i = 0; i < sals.nelts; i++)
9417 struct static_tracepoint_marker *marker;
9419 marker = VEC_index (static_tracepoint_marker_p, markers, i);
9421 init_sal (&sals.sals[i]);
9423 sals.sals[i] = find_pc_line (marker->address, 0);
9424 sals.sals[i].pc = marker->address;
9426 release_static_tracepoint_marker (marker);
9429 do_cleanups (old_chain);
9435 /* Set a breakpoint. This function is shared between CLI and MI
9436 functions for setting a breakpoint. This function has two major
9437 modes of operations, selected by the PARSE_CONDITION_AND_THREAD
9438 parameter. If non-zero, the function will parse arg, extracting
9439 breakpoint location, address and thread. Otherwise, ARG is just
9440 the location of breakpoint, with condition and thread specified by
9441 the COND_STRING and THREAD parameters. If INTERNAL is non-zero,
9442 the breakpoint number will be allocated from the internal
9443 breakpoint count. Returns true if any breakpoint was created;
9447 create_breakpoint (struct gdbarch *gdbarch,
9448 char *arg, char *cond_string,
9449 int thread, char *extra_string,
9450 int parse_condition_and_thread,
9451 int tempflag, enum bptype type_wanted,
9453 enum auto_boolean pending_break_support,
9454 const struct breakpoint_ops *ops,
9455 int from_tty, int enabled, int internal,
9458 volatile struct gdb_exception e;
9459 char *copy_arg = NULL;
9460 char *addr_start = arg;
9461 struct linespec_result canonical;
9462 struct cleanup *old_chain;
9463 struct cleanup *bkpt_chain = NULL;
9466 int prev_bkpt_count = breakpoint_count;
9468 gdb_assert (ops != NULL);
9470 init_linespec_result (&canonical);
9472 TRY_CATCH (e, RETURN_MASK_ALL)
9474 ops->create_sals_from_address (&arg, &canonical, type_wanted,
9475 addr_start, ©_arg);
9478 /* If caller is interested in rc value from parse, set value. */
9482 if (VEC_empty (linespec_sals, canonical.sals))
9488 case NOT_FOUND_ERROR:
9490 /* If pending breakpoint support is turned off, throw
9493 if (pending_break_support == AUTO_BOOLEAN_FALSE)
9494 throw_exception (e);
9496 exception_print (gdb_stderr, e);
9498 /* If pending breakpoint support is auto query and the user
9499 selects no, then simply return the error code. */
9500 if (pending_break_support == AUTO_BOOLEAN_AUTO
9501 && !nquery (_("Make %s pending on future shared library load? "),
9502 bptype_string (type_wanted)))
9505 /* At this point, either the user was queried about setting
9506 a pending breakpoint and selected yes, or pending
9507 breakpoint behavior is on and thus a pending breakpoint
9508 is defaulted on behalf of the user. */
9510 struct linespec_sals lsal;
9512 copy_arg = xstrdup (addr_start);
9513 lsal.canonical = xstrdup (copy_arg);
9514 lsal.sals.nelts = 1;
9515 lsal.sals.sals = XNEW (struct symtab_and_line);
9516 init_sal (&lsal.sals.sals[0]);
9518 VEC_safe_push (linespec_sals, canonical.sals, &lsal);
9522 throw_exception (e);
9526 throw_exception (e);
9529 /* Create a chain of things that always need to be cleaned up. */
9530 old_chain = make_cleanup_destroy_linespec_result (&canonical);
9532 /* ----------------------------- SNIP -----------------------------
9533 Anything added to the cleanup chain beyond this point is assumed
9534 to be part of a breakpoint. If the breakpoint create succeeds
9535 then the memory is not reclaimed. */
9536 bkpt_chain = make_cleanup (null_cleanup, 0);
9538 /* Resolve all line numbers to PC's and verify that the addresses
9539 are ok for the target. */
9543 struct linespec_sals *iter;
9545 for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix)
9546 breakpoint_sals_to_pc (&iter->sals);
9549 /* Fast tracepoints may have additional restrictions on location. */
9550 if (!pending && type_wanted == bp_fast_tracepoint)
9553 struct linespec_sals *iter;
9555 for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix)
9556 check_fast_tracepoint_sals (gdbarch, &iter->sals);
9559 /* Verify that condition can be parsed, before setting any
9560 breakpoints. Allocate a separate condition expression for each
9564 struct linespec_sals *lsal;
9566 lsal = VEC_index (linespec_sals, canonical.sals, 0);
9568 if (parse_condition_and_thread)
9571 /* Here we only parse 'arg' to separate condition
9572 from thread number, so parsing in context of first
9573 sal is OK. When setting the breakpoint we'll
9574 re-parse it in context of each sal. */
9576 find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string,
9577 &thread, &task, &rest);
9579 make_cleanup (xfree, cond_string);
9581 make_cleanup (xfree, rest);
9583 extra_string = rest;
9587 /* Create a private copy of condition string. */
9590 cond_string = xstrdup (cond_string);
9591 make_cleanup (xfree, cond_string);
9593 /* Create a private copy of any extra string. */
9596 extra_string = xstrdup (extra_string);
9597 make_cleanup (xfree, extra_string);
9601 ops->create_breakpoints_sal (gdbarch, &canonical, lsal,
9602 cond_string, extra_string, type_wanted,
9603 tempflag ? disp_del : disp_donttouch,
9604 thread, task, ignore_count, ops,
9605 from_tty, enabled, internal, flags);
9609 struct breakpoint *b;
9611 make_cleanup (xfree, copy_arg);
9613 if (is_tracepoint_type (type_wanted))
9615 struct tracepoint *t;
9617 t = XCNEW (struct tracepoint);
9621 b = XNEW (struct breakpoint);
9623 init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops);
9625 b->addr_string = copy_arg;
9626 if (parse_condition_and_thread)
9627 b->cond_string = NULL;
9630 /* Create a private copy of condition string. */
9633 cond_string = xstrdup (cond_string);
9634 make_cleanup (xfree, cond_string);
9636 b->cond_string = cond_string;
9638 b->extra_string = NULL;
9639 b->ignore_count = ignore_count;
9640 b->disposition = tempflag ? disp_del : disp_donttouch;
9641 b->condition_not_parsed = 1;
9642 b->enable_state = enabled ? bp_enabled : bp_disabled;
9643 if ((type_wanted != bp_breakpoint
9644 && type_wanted != bp_hardware_breakpoint) || thread != -1)
9645 b->pspace = current_program_space;
9647 install_breakpoint (internal, b, 0);
9650 if (VEC_length (linespec_sals, canonical.sals) > 1)
9652 warning (_("Multiple breakpoints were set.\nUse the "
9653 "\"delete\" command to delete unwanted breakpoints."));
9654 prev_breakpoint_count = prev_bkpt_count;
9657 /* That's it. Discard the cleanups for data inserted into the
9659 discard_cleanups (bkpt_chain);
9660 /* But cleanup everything else. */
9661 do_cleanups (old_chain);
9663 /* error call may happen here - have BKPT_CHAIN already discarded. */
9664 update_global_location_list (1);
9669 /* Set a breakpoint.
9670 ARG is a string describing breakpoint address,
9671 condition, and thread.
9672 FLAG specifies if a breakpoint is hardware on,
9673 and if breakpoint is temporary, using BP_HARDWARE_FLAG
9677 break_command_1 (char *arg, int flag, int from_tty)
9679 int tempflag = flag & BP_TEMPFLAG;
9680 enum bptype type_wanted = (flag & BP_HARDWAREFLAG
9681 ? bp_hardware_breakpoint
9683 struct breakpoint_ops *ops;
9684 const char *arg_cp = arg;
9686 /* Matching breakpoints on probes. */
9687 if (arg && probe_linespec_to_ops (&arg_cp) != NULL)
9688 ops = &bkpt_probe_breakpoint_ops;
9690 ops = &bkpt_breakpoint_ops;
9692 create_breakpoint (get_current_arch (),
9694 NULL, 0, NULL, 1 /* parse arg */,
9695 tempflag, type_wanted,
9696 0 /* Ignore count */,
9697 pending_break_support,
9705 /* Helper function for break_command_1 and disassemble_command. */
9708 resolve_sal_pc (struct symtab_and_line *sal)
9712 if (sal->pc == 0 && sal->symtab != NULL)
9714 if (!find_line_pc (sal->symtab, sal->line, &pc))
9715 error (_("No line %d in file \"%s\"."),
9716 sal->line, sal->symtab->filename);
9719 /* If this SAL corresponds to a breakpoint inserted using a line
9720 number, then skip the function prologue if necessary. */
9721 if (sal->explicit_line)
9722 skip_prologue_sal (sal);
9725 if (sal->section == 0 && sal->symtab != NULL)
9727 struct blockvector *bv;
9731 bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab);
9734 sym = block_linkage_function (b);
9737 fixup_symbol_section (sym, sal->symtab->objfile);
9738 sal->section = SYMBOL_OBJ_SECTION (sym);
9742 /* It really is worthwhile to have the section, so we'll
9743 just have to look harder. This case can be executed
9744 if we have line numbers but no functions (as can
9745 happen in assembly source). */
9747 struct minimal_symbol *msym;
9748 struct cleanup *old_chain = save_current_space_and_thread ();
9750 switch_to_program_space_and_thread (sal->pspace);
9752 msym = lookup_minimal_symbol_by_pc (sal->pc);
9754 sal->section = SYMBOL_OBJ_SECTION (msym);
9756 do_cleanups (old_chain);
9763 break_command (char *arg, int from_tty)
9765 break_command_1 (arg, 0, from_tty);
9769 tbreak_command (char *arg, int from_tty)
9771 break_command_1 (arg, BP_TEMPFLAG, from_tty);
9775 hbreak_command (char *arg, int from_tty)
9777 break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
9781 thbreak_command (char *arg, int from_tty)
9783 break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
9787 stop_command (char *arg, int from_tty)
9789 printf_filtered (_("Specify the type of breakpoint to set.\n\
9790 Usage: stop in <function | address>\n\
9791 stop at <line>\n"));
9795 stopin_command (char *arg, int from_tty)
9799 if (arg == (char *) NULL)
9801 else if (*arg != '*')
9806 /* Look for a ':'. If this is a line number specification, then
9807 say it is bad, otherwise, it should be an address or
9808 function/method name. */
9809 while (*argptr && !hasColon)
9811 hasColon = (*argptr == ':');
9816 badInput = (*argptr != ':'); /* Not a class::method */
9818 badInput = isdigit (*arg); /* a simple line number */
9822 printf_filtered (_("Usage: stop in <function | address>\n"));
9824 break_command_1 (arg, 0, from_tty);
9828 stopat_command (char *arg, int from_tty)
9832 if (arg == (char *) NULL || *arg == '*') /* no line number */
9839 /* Look for a ':'. If there is a '::' then get out, otherwise
9840 it is probably a line number. */
9841 while (*argptr && !hasColon)
9843 hasColon = (*argptr == ':');
9848 badInput = (*argptr == ':'); /* we have class::method */
9850 badInput = !isdigit (*arg); /* not a line number */
9854 printf_filtered (_("Usage: stop at <line>\n"));
9856 break_command_1 (arg, 0, from_tty);
9859 /* The dynamic printf command is mostly like a regular breakpoint, but
9860 with a prewired command list consisting of a single output command,
9861 built from extra arguments supplied on the dprintf command
9865 dprintf_command (char *arg, int from_tty)
9867 create_breakpoint (get_current_arch (),
9869 NULL, 0, NULL, 1 /* parse arg */,
9871 0 /* Ignore count */,
9872 pending_break_support,
9873 &dprintf_breakpoint_ops,
9881 agent_printf_command (char *arg, int from_tty)
9883 error (_("May only run agent-printf on the target"));
9886 /* Implement the "breakpoint_hit" breakpoint_ops method for
9887 ranged breakpoints. */
9890 breakpoint_hit_ranged_breakpoint (const struct bp_location *bl,
9891 struct address_space *aspace,
9893 const struct target_waitstatus *ws)
9895 if (ws->kind != TARGET_WAITKIND_STOPPED
9896 || ws->value.sig != GDB_SIGNAL_TRAP)
9899 return breakpoint_address_match_range (bl->pspace->aspace, bl->address,
9900 bl->length, aspace, bp_addr);
9903 /* Implement the "resources_needed" breakpoint_ops method for
9904 ranged breakpoints. */
9907 resources_needed_ranged_breakpoint (const struct bp_location *bl)
9909 return target_ranged_break_num_registers ();
9912 /* Implement the "print_it" breakpoint_ops method for
9913 ranged breakpoints. */
9915 static enum print_stop_action
9916 print_it_ranged_breakpoint (bpstat bs)
9918 struct breakpoint *b = bs->breakpoint_at;
9919 struct bp_location *bl = b->loc;
9920 struct ui_out *uiout = current_uiout;
9922 gdb_assert (b->type == bp_hardware_breakpoint);
9924 /* Ranged breakpoints have only one location. */
9925 gdb_assert (bl && bl->next == NULL);
9927 annotate_breakpoint (b->number);
9928 if (b->disposition == disp_del)
9929 ui_out_text (uiout, "\nTemporary ranged breakpoint ");
9931 ui_out_text (uiout, "\nRanged breakpoint ");
9932 if (ui_out_is_mi_like_p (uiout))
9934 ui_out_field_string (uiout, "reason",
9935 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
9936 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
9938 ui_out_field_int (uiout, "bkptno", b->number);
9939 ui_out_text (uiout, ", ");
9941 return PRINT_SRC_AND_LOC;
9944 /* Implement the "print_one" breakpoint_ops method for
9945 ranged breakpoints. */
9948 print_one_ranged_breakpoint (struct breakpoint *b,
9949 struct bp_location **last_loc)
9951 struct bp_location *bl = b->loc;
9952 struct value_print_options opts;
9953 struct ui_out *uiout = current_uiout;
9955 /* Ranged breakpoints have only one location. */
9956 gdb_assert (bl && bl->next == NULL);
9958 get_user_print_options (&opts);
9960 if (opts.addressprint)
9961 /* We don't print the address range here, it will be printed later
9962 by print_one_detail_ranged_breakpoint. */
9963 ui_out_field_skip (uiout, "addr");
9965 print_breakpoint_location (b, bl);
9969 /* Implement the "print_one_detail" breakpoint_ops method for
9970 ranged breakpoints. */
9973 print_one_detail_ranged_breakpoint (const struct breakpoint *b,
9974 struct ui_out *uiout)
9976 CORE_ADDR address_start, address_end;
9977 struct bp_location *bl = b->loc;
9978 struct ui_file *stb = mem_fileopen ();
9979 struct cleanup *cleanup = make_cleanup_ui_file_delete (stb);
9983 address_start = bl->address;
9984 address_end = address_start + bl->length - 1;
9986 ui_out_text (uiout, "\taddress range: ");
9987 fprintf_unfiltered (stb, "[%s, %s]",
9988 print_core_address (bl->gdbarch, address_start),
9989 print_core_address (bl->gdbarch, address_end));
9990 ui_out_field_stream (uiout, "addr", stb);
9991 ui_out_text (uiout, "\n");
9993 do_cleanups (cleanup);
9996 /* Implement the "print_mention" breakpoint_ops method for
9997 ranged breakpoints. */
10000 print_mention_ranged_breakpoint (struct breakpoint *b)
10002 struct bp_location *bl = b->loc;
10003 struct ui_out *uiout = current_uiout;
10006 gdb_assert (b->type == bp_hardware_breakpoint);
10008 if (ui_out_is_mi_like_p (uiout))
10011 printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."),
10012 b->number, paddress (bl->gdbarch, bl->address),
10013 paddress (bl->gdbarch, bl->address + bl->length - 1));
10016 /* Implement the "print_recreate" breakpoint_ops method for
10017 ranged breakpoints. */
10020 print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp)
10022 fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string,
10023 b->addr_string_range_end);
10024 print_recreate_thread (b, fp);
10027 /* The breakpoint_ops structure to be used in ranged breakpoints. */
10029 static struct breakpoint_ops ranged_breakpoint_ops;
10031 /* Find the address where the end of the breakpoint range should be
10032 placed, given the SAL of the end of the range. This is so that if
10033 the user provides a line number, the end of the range is set to the
10034 last instruction of the given line. */
10037 find_breakpoint_range_end (struct symtab_and_line sal)
10041 /* If the user provided a PC value, use it. Otherwise,
10042 find the address of the end of the given location. */
10043 if (sal.explicit_pc)
10050 ret = find_line_pc_range (sal, &start, &end);
10052 error (_("Could not find location of the end of the range."));
10054 /* find_line_pc_range returns the start of the next line. */
10061 /* Implement the "break-range" CLI command. */
10064 break_range_command (char *arg, int from_tty)
10066 char *arg_start, *addr_string_start, *addr_string_end;
10067 struct linespec_result canonical_start, canonical_end;
10068 int bp_count, can_use_bp, length;
10070 struct breakpoint *b;
10071 struct symtab_and_line sal_start, sal_end;
10072 struct cleanup *cleanup_bkpt;
10073 struct linespec_sals *lsal_start, *lsal_end;
10075 /* We don't support software ranged breakpoints. */
10076 if (target_ranged_break_num_registers () < 0)
10077 error (_("This target does not support hardware ranged breakpoints."));
10079 bp_count = hw_breakpoint_used_count ();
10080 bp_count += target_ranged_break_num_registers ();
10081 can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
10083 if (can_use_bp < 0)
10084 error (_("Hardware breakpoints used exceeds limit."));
10086 arg = skip_spaces (arg);
10087 if (arg == NULL || arg[0] == '\0')
10088 error(_("No address range specified."));
10090 init_linespec_result (&canonical_start);
10093 parse_breakpoint_sals (&arg, &canonical_start);
10095 cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start);
10098 error (_("Too few arguments."));
10099 else if (VEC_empty (linespec_sals, canonical_start.sals))
10100 error (_("Could not find location of the beginning of the range."));
10102 lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0);
10104 if (VEC_length (linespec_sals, canonical_start.sals) > 1
10105 || lsal_start->sals.nelts != 1)
10106 error (_("Cannot create a ranged breakpoint with multiple locations."));
10108 sal_start = lsal_start->sals.sals[0];
10109 addr_string_start = savestring (arg_start, arg - arg_start);
10110 make_cleanup (xfree, addr_string_start);
10112 arg++; /* Skip the comma. */
10113 arg = skip_spaces (arg);
10115 /* Parse the end location. */
10117 init_linespec_result (&canonical_end);
10120 /* We call decode_line_full directly here instead of using
10121 parse_breakpoint_sals because we need to specify the start location's
10122 symtab and line as the default symtab and line for the end of the
10123 range. This makes it possible to have ranges like "foo.c:27, +14",
10124 where +14 means 14 lines from the start location. */
10125 decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE,
10126 sal_start.symtab, sal_start.line,
10127 &canonical_end, NULL, NULL);
10129 make_cleanup_destroy_linespec_result (&canonical_end);
10131 if (VEC_empty (linespec_sals, canonical_end.sals))
10132 error (_("Could not find location of the end of the range."));
10134 lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0);
10135 if (VEC_length (linespec_sals, canonical_end.sals) > 1
10136 || lsal_end->sals.nelts != 1)
10137 error (_("Cannot create a ranged breakpoint with multiple locations."));
10139 sal_end = lsal_end->sals.sals[0];
10140 addr_string_end = savestring (arg_start, arg - arg_start);
10141 make_cleanup (xfree, addr_string_end);
10143 end = find_breakpoint_range_end (sal_end);
10144 if (sal_start.pc > end)
10145 error (_("Invalid address range, end precedes start."));
10147 length = end - sal_start.pc + 1;
10149 /* Length overflowed. */
10150 error (_("Address range too large."));
10151 else if (length == 1)
10153 /* This range is simple enough to be handled by
10154 the `hbreak' command. */
10155 hbreak_command (addr_string_start, 1);
10157 do_cleanups (cleanup_bkpt);
10162 /* Now set up the breakpoint. */
10163 b = set_raw_breakpoint (get_current_arch (), sal_start,
10164 bp_hardware_breakpoint, &ranged_breakpoint_ops);
10165 set_breakpoint_count (breakpoint_count + 1);
10166 b->number = breakpoint_count;
10167 b->disposition = disp_donttouch;
10168 b->addr_string = xstrdup (addr_string_start);
10169 b->addr_string_range_end = xstrdup (addr_string_end);
10170 b->loc->length = length;
10172 do_cleanups (cleanup_bkpt);
10175 observer_notify_breakpoint_created (b);
10176 update_global_location_list (1);
10179 /* Return non-zero if EXP is verified as constant. Returned zero
10180 means EXP is variable. Also the constant detection may fail for
10181 some constant expressions and in such case still falsely return
10185 watchpoint_exp_is_const (const struct expression *exp)
10187 int i = exp->nelts;
10193 /* We are only interested in the descriptor of each element. */
10194 operator_length (exp, i, &oplenp, &argsp);
10197 switch (exp->elts[i].opcode)
10207 case BINOP_LOGICAL_AND:
10208 case BINOP_LOGICAL_OR:
10209 case BINOP_BITWISE_AND:
10210 case BINOP_BITWISE_IOR:
10211 case BINOP_BITWISE_XOR:
10213 case BINOP_NOTEQUAL:
10241 case OP_OBJC_NSSTRING:
10244 case UNOP_LOGICAL_NOT:
10245 case UNOP_COMPLEMENT:
10250 case UNOP_CAST_TYPE:
10251 case UNOP_REINTERPRET_CAST:
10252 case UNOP_DYNAMIC_CAST:
10253 /* Unary, binary and ternary operators: We have to check
10254 their operands. If they are constant, then so is the
10255 result of that operation. For instance, if A and B are
10256 determined to be constants, then so is "A + B".
10258 UNOP_IND is one exception to the rule above, because the
10259 value of *ADDR is not necessarily a constant, even when
10264 /* Check whether the associated symbol is a constant.
10266 We use SYMBOL_CLASS rather than TYPE_CONST because it's
10267 possible that a buggy compiler could mark a variable as
10268 constant even when it is not, and TYPE_CONST would return
10269 true in this case, while SYMBOL_CLASS wouldn't.
10271 We also have to check for function symbols because they
10272 are always constant. */
10274 struct symbol *s = exp->elts[i + 2].symbol;
10276 if (SYMBOL_CLASS (s) != LOC_BLOCK
10277 && SYMBOL_CLASS (s) != LOC_CONST
10278 && SYMBOL_CLASS (s) != LOC_CONST_BYTES)
10283 /* The default action is to return 0 because we are using
10284 the optimistic approach here: If we don't know something,
10285 then it is not a constant. */
10294 /* Implement the "dtor" breakpoint_ops method for watchpoints. */
10297 dtor_watchpoint (struct breakpoint *self)
10299 struct watchpoint *w = (struct watchpoint *) self;
10301 xfree (w->cond_exp);
10303 xfree (w->exp_string);
10304 xfree (w->exp_string_reparse);
10305 value_free (w->val);
10307 base_breakpoint_ops.dtor (self);
10310 /* Implement the "re_set" breakpoint_ops method for watchpoints. */
10313 re_set_watchpoint (struct breakpoint *b)
10315 struct watchpoint *w = (struct watchpoint *) b;
10317 /* Watchpoint can be either on expression using entirely global
10318 variables, or it can be on local variables.
10320 Watchpoints of the first kind are never auto-deleted, and even
10321 persist across program restarts. Since they can use variables
10322 from shared libraries, we need to reparse expression as libraries
10323 are loaded and unloaded.
10325 Watchpoints on local variables can also change meaning as result
10326 of solib event. For example, if a watchpoint uses both a local
10327 and a global variables in expression, it's a local watchpoint,
10328 but unloading of a shared library will make the expression
10329 invalid. This is not a very common use case, but we still
10330 re-evaluate expression, to avoid surprises to the user.
10332 Note that for local watchpoints, we re-evaluate it only if
10333 watchpoints frame id is still valid. If it's not, it means the
10334 watchpoint is out of scope and will be deleted soon. In fact,
10335 I'm not sure we'll ever be called in this case.
10337 If a local watchpoint's frame id is still valid, then
10338 w->exp_valid_block is likewise valid, and we can safely use it.
10340 Don't do anything about disabled watchpoints, since they will be
10341 reevaluated again when enabled. */
10342 update_watchpoint (w, 1 /* reparse */);
10345 /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */
10348 insert_watchpoint (struct bp_location *bl)
10350 struct watchpoint *w = (struct watchpoint *) bl->owner;
10351 int length = w->exact ? 1 : bl->length;
10353 return target_insert_watchpoint (bl->address, length, bl->watchpoint_type,
10357 /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */
10360 remove_watchpoint (struct bp_location *bl)
10362 struct watchpoint *w = (struct watchpoint *) bl->owner;
10363 int length = w->exact ? 1 : bl->length;
10365 return target_remove_watchpoint (bl->address, length, bl->watchpoint_type,
10370 breakpoint_hit_watchpoint (const struct bp_location *bl,
10371 struct address_space *aspace, CORE_ADDR bp_addr,
10372 const struct target_waitstatus *ws)
10374 struct breakpoint *b = bl->owner;
10375 struct watchpoint *w = (struct watchpoint *) b;
10377 /* Continuable hardware watchpoints are treated as non-existent if the
10378 reason we stopped wasn't a hardware watchpoint (we didn't stop on
10379 some data address). Otherwise gdb won't stop on a break instruction
10380 in the code (not from a breakpoint) when a hardware watchpoint has
10381 been defined. Also skip watchpoints which we know did not trigger
10382 (did not match the data address). */
10383 if (is_hardware_watchpoint (b)
10384 && w->watchpoint_triggered == watch_triggered_no)
10391 check_status_watchpoint (bpstat bs)
10393 gdb_assert (is_watchpoint (bs->breakpoint_at));
10395 bpstat_check_watchpoint (bs);
10398 /* Implement the "resources_needed" breakpoint_ops method for
10399 hardware watchpoints. */
10402 resources_needed_watchpoint (const struct bp_location *bl)
10404 struct watchpoint *w = (struct watchpoint *) bl->owner;
10405 int length = w->exact? 1 : bl->length;
10407 return target_region_ok_for_hw_watchpoint (bl->address, length);
10410 /* Implement the "works_in_software_mode" breakpoint_ops method for
10411 hardware watchpoints. */
10414 works_in_software_mode_watchpoint (const struct breakpoint *b)
10416 /* Read and access watchpoints only work with hardware support. */
10417 return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint;
10420 static enum print_stop_action
10421 print_it_watchpoint (bpstat bs)
10423 struct cleanup *old_chain;
10424 struct breakpoint *b;
10425 const struct bp_location *bl;
10426 struct ui_file *stb;
10427 enum print_stop_action result;
10428 struct watchpoint *w;
10429 struct ui_out *uiout = current_uiout;
10431 gdb_assert (bs->bp_location_at != NULL);
10433 bl = bs->bp_location_at;
10434 b = bs->breakpoint_at;
10435 w = (struct watchpoint *) b;
10437 stb = mem_fileopen ();
10438 old_chain = make_cleanup_ui_file_delete (stb);
10442 case bp_watchpoint:
10443 case bp_hardware_watchpoint:
10444 annotate_watchpoint (b->number);
10445 if (ui_out_is_mi_like_p (uiout))
10446 ui_out_field_string
10448 async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
10450 make_cleanup_ui_out_tuple_begin_end (uiout, "value");
10451 ui_out_text (uiout, "\nOld value = ");
10452 watchpoint_value_print (bs->old_val, stb);
10453 ui_out_field_stream (uiout, "old", stb);
10454 ui_out_text (uiout, "\nNew value = ");
10455 watchpoint_value_print (w->val, stb);
10456 ui_out_field_stream (uiout, "new", stb);
10457 ui_out_text (uiout, "\n");
10458 /* More than one watchpoint may have been triggered. */
10459 result = PRINT_UNKNOWN;
10462 case bp_read_watchpoint:
10463 if (ui_out_is_mi_like_p (uiout))
10464 ui_out_field_string
10466 async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
10468 make_cleanup_ui_out_tuple_begin_end (uiout, "value");
10469 ui_out_text (uiout, "\nValue = ");
10470 watchpoint_value_print (w->val, stb);
10471 ui_out_field_stream (uiout, "value", stb);
10472 ui_out_text (uiout, "\n");
10473 result = PRINT_UNKNOWN;
10476 case bp_access_watchpoint:
10477 if (bs->old_val != NULL)
10479 annotate_watchpoint (b->number);
10480 if (ui_out_is_mi_like_p (uiout))
10481 ui_out_field_string
10483 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
10485 make_cleanup_ui_out_tuple_begin_end (uiout, "value");
10486 ui_out_text (uiout, "\nOld value = ");
10487 watchpoint_value_print (bs->old_val, stb);
10488 ui_out_field_stream (uiout, "old", stb);
10489 ui_out_text (uiout, "\nNew value = ");
10494 if (ui_out_is_mi_like_p (uiout))
10495 ui_out_field_string
10497 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
10498 make_cleanup_ui_out_tuple_begin_end (uiout, "value");
10499 ui_out_text (uiout, "\nValue = ");
10501 watchpoint_value_print (w->val, stb);
10502 ui_out_field_stream (uiout, "new", stb);
10503 ui_out_text (uiout, "\n");
10504 result = PRINT_UNKNOWN;
10507 result = PRINT_UNKNOWN;
10510 do_cleanups (old_chain);
10514 /* Implement the "print_mention" breakpoint_ops method for hardware
10518 print_mention_watchpoint (struct breakpoint *b)
10520 struct cleanup *ui_out_chain;
10521 struct watchpoint *w = (struct watchpoint *) b;
10522 struct ui_out *uiout = current_uiout;
10526 case bp_watchpoint:
10527 ui_out_text (uiout, "Watchpoint ");
10528 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
10530 case bp_hardware_watchpoint:
10531 ui_out_text (uiout, "Hardware watchpoint ");
10532 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
10534 case bp_read_watchpoint:
10535 ui_out_text (uiout, "Hardware read watchpoint ");
10536 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
10538 case bp_access_watchpoint:
10539 ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
10540 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
10543 internal_error (__FILE__, __LINE__,
10544 _("Invalid hardware watchpoint type."));
10547 ui_out_field_int (uiout, "number", b->number);
10548 ui_out_text (uiout, ": ");
10549 ui_out_field_string (uiout, "exp", w->exp_string);
10550 do_cleanups (ui_out_chain);
10553 /* Implement the "print_recreate" breakpoint_ops method for
10557 print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp)
10559 struct watchpoint *w = (struct watchpoint *) b;
10563 case bp_watchpoint:
10564 case bp_hardware_watchpoint:
10565 fprintf_unfiltered (fp, "watch");
10567 case bp_read_watchpoint:
10568 fprintf_unfiltered (fp, "rwatch");
10570 case bp_access_watchpoint:
10571 fprintf_unfiltered (fp, "awatch");
10574 internal_error (__FILE__, __LINE__,
10575 _("Invalid watchpoint type."));
10578 fprintf_unfiltered (fp, " %s", w->exp_string);
10579 print_recreate_thread (b, fp);
10582 /* The breakpoint_ops structure to be used in hardware watchpoints. */
10584 static struct breakpoint_ops watchpoint_breakpoint_ops;
10586 /* Implement the "insert" breakpoint_ops method for
10587 masked hardware watchpoints. */
10590 insert_masked_watchpoint (struct bp_location *bl)
10592 struct watchpoint *w = (struct watchpoint *) bl->owner;
10594 return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask,
10595 bl->watchpoint_type);
10598 /* Implement the "remove" breakpoint_ops method for
10599 masked hardware watchpoints. */
10602 remove_masked_watchpoint (struct bp_location *bl)
10604 struct watchpoint *w = (struct watchpoint *) bl->owner;
10606 return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask,
10607 bl->watchpoint_type);
10610 /* Implement the "resources_needed" breakpoint_ops method for
10611 masked hardware watchpoints. */
10614 resources_needed_masked_watchpoint (const struct bp_location *bl)
10616 struct watchpoint *w = (struct watchpoint *) bl->owner;
10618 return target_masked_watch_num_registers (bl->address, w->hw_wp_mask);
10621 /* Implement the "works_in_software_mode" breakpoint_ops method for
10622 masked hardware watchpoints. */
10625 works_in_software_mode_masked_watchpoint (const struct breakpoint *b)
10630 /* Implement the "print_it" breakpoint_ops method for
10631 masked hardware watchpoints. */
10633 static enum print_stop_action
10634 print_it_masked_watchpoint (bpstat bs)
10636 struct breakpoint *b = bs->breakpoint_at;
10637 struct ui_out *uiout = current_uiout;
10639 /* Masked watchpoints have only one location. */
10640 gdb_assert (b->loc && b->loc->next == NULL);
10644 case bp_hardware_watchpoint:
10645 annotate_watchpoint (b->number);
10646 if (ui_out_is_mi_like_p (uiout))
10647 ui_out_field_string
10649 async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
10652 case bp_read_watchpoint:
10653 if (ui_out_is_mi_like_p (uiout))
10654 ui_out_field_string
10656 async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
10659 case bp_access_watchpoint:
10660 if (ui_out_is_mi_like_p (uiout))
10661 ui_out_field_string
10663 async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
10666 internal_error (__FILE__, __LINE__,
10667 _("Invalid hardware watchpoint type."));
10671 ui_out_text (uiout, _("\n\
10672 Check the underlying instruction at PC for the memory\n\
10673 address and value which triggered this watchpoint.\n"));
10674 ui_out_text (uiout, "\n");
10676 /* More than one watchpoint may have been triggered. */
10677 return PRINT_UNKNOWN;
10680 /* Implement the "print_one_detail" breakpoint_ops method for
10681 masked hardware watchpoints. */
10684 print_one_detail_masked_watchpoint (const struct breakpoint *b,
10685 struct ui_out *uiout)
10687 struct watchpoint *w = (struct watchpoint *) b;
10689 /* Masked watchpoints have only one location. */
10690 gdb_assert (b->loc && b->loc->next == NULL);
10692 ui_out_text (uiout, "\tmask ");
10693 ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask);
10694 ui_out_text (uiout, "\n");
10697 /* Implement the "print_mention" breakpoint_ops method for
10698 masked hardware watchpoints. */
10701 print_mention_masked_watchpoint (struct breakpoint *b)
10703 struct watchpoint *w = (struct watchpoint *) b;
10704 struct ui_out *uiout = current_uiout;
10705 struct cleanup *ui_out_chain;
10709 case bp_hardware_watchpoint:
10710 ui_out_text (uiout, "Masked hardware watchpoint ");
10711 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
10713 case bp_read_watchpoint:
10714 ui_out_text (uiout, "Masked hardware read watchpoint ");
10715 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
10717 case bp_access_watchpoint:
10718 ui_out_text (uiout, "Masked hardware access (read/write) watchpoint ");
10719 ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
10722 internal_error (__FILE__, __LINE__,
10723 _("Invalid hardware watchpoint type."));
10726 ui_out_field_int (uiout, "number", b->number);
10727 ui_out_text (uiout, ": ");
10728 ui_out_field_string (uiout, "exp", w->exp_string);
10729 do_cleanups (ui_out_chain);
10732 /* Implement the "print_recreate" breakpoint_ops method for
10733 masked hardware watchpoints. */
10736 print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp)
10738 struct watchpoint *w = (struct watchpoint *) b;
10743 case bp_hardware_watchpoint:
10744 fprintf_unfiltered (fp, "watch");
10746 case bp_read_watchpoint:
10747 fprintf_unfiltered (fp, "rwatch");
10749 case bp_access_watchpoint:
10750 fprintf_unfiltered (fp, "awatch");
10753 internal_error (__FILE__, __LINE__,
10754 _("Invalid hardware watchpoint type."));
10757 sprintf_vma (tmp, w->hw_wp_mask);
10758 fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp);
10759 print_recreate_thread (b, fp);
10762 /* The breakpoint_ops structure to be used in masked hardware watchpoints. */
10764 static struct breakpoint_ops masked_watchpoint_breakpoint_ops;
10766 /* Tell whether the given watchpoint is a masked hardware watchpoint. */
10769 is_masked_watchpoint (const struct breakpoint *b)
10771 return b->ops == &masked_watchpoint_breakpoint_ops;
10774 /* accessflag: hw_write: watch write,
10775 hw_read: watch read,
10776 hw_access: watch access (read or write) */
10778 watch_command_1 (char *arg, int accessflag, int from_tty,
10779 int just_location, int internal)
10781 volatile struct gdb_exception e;
10782 struct breakpoint *b, *scope_breakpoint = NULL;
10783 struct expression *exp;
10784 const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL;
10785 struct value *val, *mark, *result;
10786 struct frame_info *frame;
10787 char *exp_start = NULL;
10788 char *exp_end = NULL;
10789 char *tok, *end_tok;
10791 char *cond_start = NULL;
10792 char *cond_end = NULL;
10793 enum bptype bp_type;
10796 /* Flag to indicate whether we are going to use masks for
10797 the hardware watchpoint. */
10799 CORE_ADDR mask = 0;
10800 struct watchpoint *w;
10802 /* Make sure that we actually have parameters to parse. */
10803 if (arg != NULL && arg[0] != '\0')
10807 /* Look for "parameter value" pairs at the end
10808 of the arguments string. */
10809 for (tok = arg + strlen (arg) - 1; tok > arg; tok--)
10811 /* Skip whitespace at the end of the argument list. */
10812 while (tok > arg && (*tok == ' ' || *tok == '\t'))
10815 /* Find the beginning of the last token.
10816 This is the value of the parameter. */
10817 while (tok > arg && (*tok != ' ' && *tok != '\t'))
10819 value_start = tok + 1;
10821 /* Skip whitespace. */
10822 while (tok > arg && (*tok == ' ' || *tok == '\t'))
10827 /* Find the beginning of the second to last token.
10828 This is the parameter itself. */
10829 while (tok > arg && (*tok != ' ' && *tok != '\t'))
10832 toklen = end_tok - tok + 1;
10834 if (toklen == 6 && !strncmp (tok, "thread", 6))
10836 /* At this point we've found a "thread" token, which means
10837 the user is trying to set a watchpoint that triggers
10838 only in a specific thread. */
10842 error(_("You can specify only one thread."));
10844 /* Extract the thread ID from the next token. */
10845 thread = strtol (value_start, &endp, 0);
10847 /* Check if the user provided a valid numeric value for the
10849 if (*endp != ' ' && *endp != '\t' && *endp != '\0')
10850 error (_("Invalid thread ID specification %s."), value_start);
10852 /* Check if the thread actually exists. */
10853 if (!valid_thread_id (thread))
10854 invalid_thread_id_error (thread);
10856 else if (toklen == 4 && !strncmp (tok, "mask", 4))
10858 /* We've found a "mask" token, which means the user wants to
10859 create a hardware watchpoint that is going to have the mask
10861 struct value *mask_value, *mark;
10864 error(_("You can specify only one mask."));
10866 use_mask = just_location = 1;
10868 mark = value_mark ();
10869 mask_value = parse_to_comma_and_eval (&value_start);
10870 mask = value_as_address (mask_value);
10871 value_free_to_mark (mark);
10874 /* We didn't recognize what we found. We should stop here. */
10877 /* Truncate the string and get rid of the "parameter value" pair before
10878 the arguments string is parsed by the parse_exp_1 function. */
10883 /* Parse the rest of the arguments. */
10884 innermost_block = NULL;
10886 exp = parse_exp_1 (&arg, 0, 0, 0);
10888 /* Remove trailing whitespace from the expression before saving it.
10889 This makes the eventual display of the expression string a bit
10891 while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t'))
10894 /* Checking if the expression is not constant. */
10895 if (watchpoint_exp_is_const (exp))
10899 len = exp_end - exp_start;
10900 while (len > 0 && isspace (exp_start[len - 1]))
10902 error (_("Cannot watch constant value `%.*s'."), len, exp_start);
10905 exp_valid_block = innermost_block;
10906 mark = value_mark ();
10907 fetch_subexp_value (exp, &pc, &val, &result, NULL);
10913 exp_valid_block = NULL;
10914 val = value_addr (result);
10915 release_value (val);
10916 value_free_to_mark (mark);
10920 ret = target_masked_watch_num_registers (value_as_address (val),
10923 error (_("This target does not support masked watchpoints."));
10924 else if (ret == -2)
10925 error (_("Invalid mask or memory region."));
10928 else if (val != NULL)
10929 release_value (val);
10931 tok = skip_spaces (arg);
10932 end_tok = skip_to_space (tok);
10934 toklen = end_tok - tok;
10935 if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
10937 struct expression *cond;
10939 innermost_block = NULL;
10940 tok = cond_start = end_tok + 1;
10941 cond = parse_exp_1 (&tok, 0, 0, 0);
10943 /* The watchpoint expression may not be local, but the condition
10944 may still be. E.g.: `watch global if local > 0'. */
10945 cond_exp_valid_block = innermost_block;
10951 error (_("Junk at end of command."));
10953 if (accessflag == hw_read)
10954 bp_type = bp_read_watchpoint;
10955 else if (accessflag == hw_access)
10956 bp_type = bp_access_watchpoint;
10958 bp_type = bp_hardware_watchpoint;
10960 frame = block_innermost_frame (exp_valid_block);
10962 /* If the expression is "local", then set up a "watchpoint scope"
10963 breakpoint at the point where we've left the scope of the watchpoint
10964 expression. Create the scope breakpoint before the watchpoint, so
10965 that we will encounter it first in bpstat_stop_status. */
10966 if (exp_valid_block && frame)
10968 if (frame_id_p (frame_unwind_caller_id (frame)))
10971 = create_internal_breakpoint (frame_unwind_caller_arch (frame),
10972 frame_unwind_caller_pc (frame),
10973 bp_watchpoint_scope,
10974 &momentary_breakpoint_ops);
10976 scope_breakpoint->enable_state = bp_enabled;
10978 /* Automatically delete the breakpoint when it hits. */
10979 scope_breakpoint->disposition = disp_del;
10981 /* Only break in the proper frame (help with recursion). */
10982 scope_breakpoint->frame_id = frame_unwind_caller_id (frame);
10984 /* Set the address at which we will stop. */
10985 scope_breakpoint->loc->gdbarch
10986 = frame_unwind_caller_arch (frame);
10987 scope_breakpoint->loc->requested_address
10988 = frame_unwind_caller_pc (frame);
10989 scope_breakpoint->loc->address
10990 = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch,
10991 scope_breakpoint->loc->requested_address,
10992 scope_breakpoint->type);
10996 /* Now set up the breakpoint. */
10998 w = XCNEW (struct watchpoint);
11001 init_raw_breakpoint_without_location (b, NULL, bp_type,
11002 &masked_watchpoint_breakpoint_ops);
11004 init_raw_breakpoint_without_location (b, NULL, bp_type,
11005 &watchpoint_breakpoint_ops);
11006 b->thread = thread;
11007 b->disposition = disp_donttouch;
11008 b->pspace = current_program_space;
11010 w->exp_valid_block = exp_valid_block;
11011 w->cond_exp_valid_block = cond_exp_valid_block;
11014 struct type *t = value_type (val);
11015 CORE_ADDR addr = value_as_address (val);
11018 t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t)));
11019 name = type_to_string (t);
11021 w->exp_string_reparse = xstrprintf ("* (%s *) %s", name,
11022 core_addr_to_string (addr));
11025 w->exp_string = xstrprintf ("-location %.*s",
11026 (int) (exp_end - exp_start), exp_start);
11028 /* The above expression is in C. */
11029 b->language = language_c;
11032 w->exp_string = savestring (exp_start, exp_end - exp_start);
11036 w->hw_wp_mask = mask;
11045 b->cond_string = savestring (cond_start, cond_end - cond_start);
11047 b->cond_string = 0;
11051 w->watchpoint_frame = get_frame_id (frame);
11052 w->watchpoint_thread = inferior_ptid;
11056 w->watchpoint_frame = null_frame_id;
11057 w->watchpoint_thread = null_ptid;
11060 if (scope_breakpoint != NULL)
11062 /* The scope breakpoint is related to the watchpoint. We will
11063 need to act on them together. */
11064 b->related_breakpoint = scope_breakpoint;
11065 scope_breakpoint->related_breakpoint = b;
11068 if (!just_location)
11069 value_free_to_mark (mark);
11071 TRY_CATCH (e, RETURN_MASK_ALL)
11073 /* Finally update the new watchpoint. This creates the locations
11074 that should be inserted. */
11075 update_watchpoint (w, 1);
11079 delete_breakpoint (b);
11080 throw_exception (e);
11083 install_breakpoint (internal, b, 1);
11086 /* Return count of debug registers needed to watch the given expression.
11087 If the watchpoint cannot be handled in hardware return zero. */
11090 can_use_hardware_watchpoint (struct value *v)
11092 int found_memory_cnt = 0;
11093 struct value *head = v;
11095 /* Did the user specifically forbid us to use hardware watchpoints? */
11096 if (!can_use_hw_watchpoints)
11099 /* Make sure that the value of the expression depends only upon
11100 memory contents, and values computed from them within GDB. If we
11101 find any register references or function calls, we can't use a
11102 hardware watchpoint.
11104 The idea here is that evaluating an expression generates a series
11105 of values, one holding the value of every subexpression. (The
11106 expression a*b+c has five subexpressions: a, b, a*b, c, and
11107 a*b+c.) GDB's values hold almost enough information to establish
11108 the criteria given above --- they identify memory lvalues,
11109 register lvalues, computed values, etcetera. So we can evaluate
11110 the expression, and then scan the chain of values that leaves
11111 behind to decide whether we can detect any possible change to the
11112 expression's final value using only hardware watchpoints.
11114 However, I don't think that the values returned by inferior
11115 function calls are special in any way. So this function may not
11116 notice that an expression involving an inferior function call
11117 can't be watched with hardware watchpoints. FIXME. */
11118 for (; v; v = value_next (v))
11120 if (VALUE_LVAL (v) == lval_memory)
11122 if (v != head && value_lazy (v))
11123 /* A lazy memory lvalue in the chain is one that GDB never
11124 needed to fetch; we either just used its address (e.g.,
11125 `a' in `a.b') or we never needed it at all (e.g., `a'
11126 in `a,b'). This doesn't apply to HEAD; if that is
11127 lazy then it was not readable, but watch it anyway. */
11131 /* Ahh, memory we actually used! Check if we can cover
11132 it with hardware watchpoints. */
11133 struct type *vtype = check_typedef (value_type (v));
11135 /* We only watch structs and arrays if user asked for it
11136 explicitly, never if they just happen to appear in a
11137 middle of some value chain. */
11139 || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
11140 && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
11142 CORE_ADDR vaddr = value_address (v);
11146 len = (target_exact_watchpoints
11147 && is_scalar_type_recursive (vtype))?
11148 1 : TYPE_LENGTH (value_type (v));
11150 num_regs = target_region_ok_for_hw_watchpoint (vaddr, len);
11154 found_memory_cnt += num_regs;
11158 else if (VALUE_LVAL (v) != not_lval
11159 && deprecated_value_modifiable (v) == 0)
11160 return 0; /* These are values from the history (e.g., $1). */
11161 else if (VALUE_LVAL (v) == lval_register)
11162 return 0; /* Cannot watch a register with a HW watchpoint. */
11165 /* The expression itself looks suitable for using a hardware
11166 watchpoint, but give the target machine a chance to reject it. */
11167 return found_memory_cnt;
11171 watch_command_wrapper (char *arg, int from_tty, int internal)
11173 watch_command_1 (arg, hw_write, from_tty, 0, internal);
11176 /* A helper function that looks for the "-location" argument and then
11177 calls watch_command_1. */
11180 watch_maybe_just_location (char *arg, int accessflag, int from_tty)
11182 int just_location = 0;
11185 && (check_for_argument (&arg, "-location", sizeof ("-location") - 1)
11186 || check_for_argument (&arg, "-l", sizeof ("-l") - 1)))
11188 arg = skip_spaces (arg);
11192 watch_command_1 (arg, accessflag, from_tty, just_location, 0);
11196 watch_command (char *arg, int from_tty)
11198 watch_maybe_just_location (arg, hw_write, from_tty);
11202 rwatch_command_wrapper (char *arg, int from_tty, int internal)
11204 watch_command_1 (arg, hw_read, from_tty, 0, internal);
11208 rwatch_command (char *arg, int from_tty)
11210 watch_maybe_just_location (arg, hw_read, from_tty);
11214 awatch_command_wrapper (char *arg, int from_tty, int internal)
11216 watch_command_1 (arg, hw_access, from_tty, 0, internal);
11220 awatch_command (char *arg, int from_tty)
11222 watch_maybe_just_location (arg, hw_access, from_tty);
11226 /* Helper routines for the until_command routine in infcmd.c. Here
11227 because it uses the mechanisms of breakpoints. */
11229 struct until_break_command_continuation_args
11231 struct breakpoint *breakpoint;
11232 struct breakpoint *breakpoint2;
11236 /* This function is called by fetch_inferior_event via the
11237 cmd_continuation pointer, to complete the until command. It takes
11238 care of cleaning up the temporary breakpoints set up by the until
11241 until_break_command_continuation (void *arg, int err)
11243 struct until_break_command_continuation_args *a = arg;
11245 delete_breakpoint (a->breakpoint);
11246 if (a->breakpoint2)
11247 delete_breakpoint (a->breakpoint2);
11248 delete_longjmp_breakpoint (a->thread_num);
11252 until_break_command (char *arg, int from_tty, int anywhere)
11254 struct symtabs_and_lines sals;
11255 struct symtab_and_line sal;
11256 struct frame_info *frame;
11257 struct gdbarch *frame_gdbarch;
11258 struct frame_id stack_frame_id;
11259 struct frame_id caller_frame_id;
11260 struct breakpoint *breakpoint;
11261 struct breakpoint *breakpoint2 = NULL;
11262 struct cleanup *old_chain;
11264 struct thread_info *tp;
11266 clear_proceed_status ();
11268 /* Set a breakpoint where the user wants it and at return from
11271 if (last_displayed_sal_is_valid ())
11272 sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
11273 get_last_displayed_symtab (),
11274 get_last_displayed_line ());
11276 sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
11277 (struct symtab *) NULL, 0);
11279 if (sals.nelts != 1)
11280 error (_("Couldn't get information on specified line."));
11282 sal = sals.sals[0];
11283 xfree (sals.sals); /* malloc'd, so freed. */
11286 error (_("Junk at end of arguments."));
11288 resolve_sal_pc (&sal);
11290 tp = inferior_thread ();
11293 old_chain = make_cleanup (null_cleanup, NULL);
11295 /* Note linespec handling above invalidates the frame chain.
11296 Installing a breakpoint also invalidates the frame chain (as it
11297 may need to switch threads), so do any frame handling before
11300 frame = get_selected_frame (NULL);
11301 frame_gdbarch = get_frame_arch (frame);
11302 stack_frame_id = get_stack_frame_id (frame);
11303 caller_frame_id = frame_unwind_caller_id (frame);
11305 /* Keep within the current frame, or in frames called by the current
11308 if (frame_id_p (caller_frame_id))
11310 struct symtab_and_line sal2;
11312 sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0);
11313 sal2.pc = frame_unwind_caller_pc (frame);
11314 breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame),
11318 make_cleanup_delete_breakpoint (breakpoint2);
11320 set_longjmp_breakpoint (tp, caller_frame_id);
11321 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
11324 /* set_momentary_breakpoint could invalidate FRAME. */
11328 /* If the user told us to continue until a specified location,
11329 we don't specify a frame at which we need to stop. */
11330 breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
11331 null_frame_id, bp_until);
11333 /* Otherwise, specify the selected frame, because we want to stop
11334 only at the very same frame. */
11335 breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
11336 stack_frame_id, bp_until);
11337 make_cleanup_delete_breakpoint (breakpoint);
11339 proceed (-1, GDB_SIGNAL_DEFAULT, 0);
11341 /* If we are running asynchronously, and proceed call above has
11342 actually managed to start the target, arrange for breakpoints to
11343 be deleted when the target stops. Otherwise, we're already
11344 stopped and delete breakpoints via cleanup chain. */
11346 if (target_can_async_p () && is_running (inferior_ptid))
11348 struct until_break_command_continuation_args *args;
11349 args = xmalloc (sizeof (*args));
11351 args->breakpoint = breakpoint;
11352 args->breakpoint2 = breakpoint2;
11353 args->thread_num = thread;
11355 discard_cleanups (old_chain);
11356 add_continuation (inferior_thread (),
11357 until_break_command_continuation, args,
11361 do_cleanups (old_chain);
11364 /* This function attempts to parse an optional "if <cond>" clause
11365 from the arg string. If one is not found, it returns NULL.
11367 Else, it returns a pointer to the condition string. (It does not
11368 attempt to evaluate the string against a particular block.) And,
11369 it updates arg to point to the first character following the parsed
11370 if clause in the arg string. */
11373 ep_parse_optional_if_clause (char **arg)
11377 if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2]))
11380 /* Skip the "if" keyword. */
11383 /* Skip any extra leading whitespace, and record the start of the
11384 condition string. */
11385 *arg = skip_spaces (*arg);
11386 cond_string = *arg;
11388 /* Assume that the condition occupies the remainder of the arg
11390 (*arg) += strlen (cond_string);
11392 return cond_string;
11395 /* Commands to deal with catching events, such as signals, exceptions,
11396 process start/exit, etc. */
11400 catch_fork_temporary, catch_vfork_temporary,
11401 catch_fork_permanent, catch_vfork_permanent
11406 catch_fork_command_1 (char *arg, int from_tty,
11407 struct cmd_list_element *command)
11409 struct gdbarch *gdbarch = get_current_arch ();
11410 char *cond_string = NULL;
11411 catch_fork_kind fork_kind;
11414 fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command);
11415 tempflag = (fork_kind == catch_fork_temporary
11416 || fork_kind == catch_vfork_temporary);
11420 arg = skip_spaces (arg);
11422 /* The allowed syntax is:
11424 catch [v]fork if <cond>
11426 First, check if there's an if clause. */
11427 cond_string = ep_parse_optional_if_clause (&arg);
11429 if ((*arg != '\0') && !isspace (*arg))
11430 error (_("Junk at end of arguments."));
11432 /* If this target supports it, create a fork or vfork catchpoint
11433 and enable reporting of such events. */
11436 case catch_fork_temporary:
11437 case catch_fork_permanent:
11438 create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
11439 &catch_fork_breakpoint_ops);
11441 case catch_vfork_temporary:
11442 case catch_vfork_permanent:
11443 create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
11444 &catch_vfork_breakpoint_ops);
11447 error (_("unsupported or unknown fork kind; cannot catch it"));
11453 catch_exec_command_1 (char *arg, int from_tty,
11454 struct cmd_list_element *command)
11456 struct exec_catchpoint *c;
11457 struct gdbarch *gdbarch = get_current_arch ();
11459 char *cond_string = NULL;
11461 tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
11465 arg = skip_spaces (arg);
11467 /* The allowed syntax is:
11469 catch exec if <cond>
11471 First, check if there's an if clause. */
11472 cond_string = ep_parse_optional_if_clause (&arg);
11474 if ((*arg != '\0') && !isspace (*arg))
11475 error (_("Junk at end of arguments."));
11477 c = XNEW (struct exec_catchpoint);
11478 init_catchpoint (&c->base, gdbarch, tempflag, cond_string,
11479 &catch_exec_breakpoint_ops);
11480 c->exec_pathname = NULL;
11482 install_breakpoint (0, &c->base, 1);
11485 static enum print_stop_action
11486 print_it_exception_catchpoint (bpstat bs)
11488 struct ui_out *uiout = current_uiout;
11489 struct breakpoint *b = bs->breakpoint_at;
11490 int bp_temp, bp_throw;
11492 annotate_catchpoint (b->number);
11494 bp_throw = strstr (b->addr_string, "throw") != NULL;
11495 if (b->loc->address != b->loc->requested_address)
11496 breakpoint_adjustment_warning (b->loc->requested_address,
11499 bp_temp = b->disposition == disp_del;
11500 ui_out_text (uiout,
11501 bp_temp ? "Temporary catchpoint "
11503 if (!ui_out_is_mi_like_p (uiout))
11504 ui_out_field_int (uiout, "bkptno", b->number);
11505 ui_out_text (uiout,
11506 bp_throw ? " (exception thrown), "
11507 : " (exception caught), ");
11508 if (ui_out_is_mi_like_p (uiout))
11510 ui_out_field_string (uiout, "reason",
11511 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
11512 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
11513 ui_out_field_int (uiout, "bkptno", b->number);
11515 return PRINT_SRC_AND_LOC;
11519 print_one_exception_catchpoint (struct breakpoint *b,
11520 struct bp_location **last_loc)
11522 struct value_print_options opts;
11523 struct ui_out *uiout = current_uiout;
11525 get_user_print_options (&opts);
11526 if (opts.addressprint)
11528 annotate_field (4);
11529 if (b->loc == NULL || b->loc->shlib_disabled)
11530 ui_out_field_string (uiout, "addr", "<PENDING>");
11532 ui_out_field_core_addr (uiout, "addr",
11533 b->loc->gdbarch, b->loc->address);
11535 annotate_field (5);
11537 *last_loc = b->loc;
11538 if (strstr (b->addr_string, "throw") != NULL)
11539 ui_out_field_string (uiout, "what", "exception throw");
11541 ui_out_field_string (uiout, "what", "exception catch");
11545 print_mention_exception_catchpoint (struct breakpoint *b)
11547 struct ui_out *uiout = current_uiout;
11551 bp_temp = b->disposition == disp_del;
11552 bp_throw = strstr (b->addr_string, "throw") != NULL;
11553 ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
11554 : _("Catchpoint "));
11555 ui_out_field_int (uiout, "bkptno", b->number);
11556 ui_out_text (uiout, bp_throw ? _(" (throw)")
11560 /* Implement the "print_recreate" breakpoint_ops method for throw and
11561 catch catchpoints. */
11564 print_recreate_exception_catchpoint (struct breakpoint *b,
11565 struct ui_file *fp)
11570 bp_temp = b->disposition == disp_del;
11571 bp_throw = strstr (b->addr_string, "throw") != NULL;
11572 fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch ");
11573 fprintf_unfiltered (fp, bp_throw ? "throw" : "catch");
11574 print_recreate_thread (b, fp);
11577 static struct breakpoint_ops gnu_v3_exception_catchpoint_ops;
11580 handle_gnu_v3_exceptions (int tempflag, char *cond_string,
11581 enum exception_event_kind ex_event, int from_tty)
11583 char *trigger_func_name;
11585 if (ex_event == EX_EVENT_CATCH)
11586 trigger_func_name = "__cxa_begin_catch";
11588 trigger_func_name = "__cxa_throw";
11590 create_breakpoint (get_current_arch (),
11591 trigger_func_name, cond_string, -1, NULL,
11592 0 /* condition and thread are valid. */,
11593 tempflag, bp_breakpoint,
11595 AUTO_BOOLEAN_TRUE /* pending */,
11596 &gnu_v3_exception_catchpoint_ops, from_tty,
11604 /* Deal with "catch catch" and "catch throw" commands. */
11607 catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
11608 int tempflag, int from_tty)
11610 char *cond_string = NULL;
11614 arg = skip_spaces (arg);
11616 cond_string = ep_parse_optional_if_clause (&arg);
11618 if ((*arg != '\0') && !isspace (*arg))
11619 error (_("Junk at end of arguments."));
11621 if (ex_event != EX_EVENT_THROW
11622 && ex_event != EX_EVENT_CATCH)
11623 error (_("Unsupported or unknown exception event; cannot catch it"));
11625 if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty))
11628 warning (_("Unsupported with this platform/compiler combination."));
11631 /* Implementation of "catch catch" command. */
11634 catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
11636 int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
11638 catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
11641 /* Implementation of "catch throw" command. */
11644 catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
11646 int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
11648 catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
11652 init_ada_exception_breakpoint (struct breakpoint *b,
11653 struct gdbarch *gdbarch,
11654 struct symtab_and_line sal,
11656 const struct breakpoint_ops *ops,
11662 struct gdbarch *loc_gdbarch = get_sal_arch (sal);
11664 loc_gdbarch = gdbarch;
11666 describe_other_breakpoints (loc_gdbarch,
11667 sal.pspace, sal.pc, sal.section, -1);
11668 /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
11669 version for exception catchpoints, because two catchpoints
11670 used for different exception names will use the same address.
11671 In this case, a "breakpoint ... also set at..." warning is
11672 unproductive. Besides, the warning phrasing is also a bit
11673 inappropriate, we should use the word catchpoint, and tell
11674 the user what type of catchpoint it is. The above is good
11675 enough for now, though. */
11678 init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops);
11680 b->enable_state = bp_enabled;
11681 b->disposition = tempflag ? disp_del : disp_donttouch;
11682 b->addr_string = addr_string;
11683 b->language = language_ada;
11686 /* Splits the argument using space as delimiter. Returns an xmalloc'd
11687 filter list, or NULL if no filtering is required. */
11689 catch_syscall_split_args (char *arg)
11691 VEC(int) *result = NULL;
11692 struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result);
11694 while (*arg != '\0')
11696 int i, syscall_number;
11698 char cur_name[128];
11701 /* Skip whitespace. */
11702 while (isspace (*arg))
11705 for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i)
11706 cur_name[i] = arg[i];
11707 cur_name[i] = '\0';
11710 /* Check if the user provided a syscall name or a number. */
11711 syscall_number = (int) strtol (cur_name, &endptr, 0);
11712 if (*endptr == '\0')
11713 get_syscall_by_number (syscall_number, &s);
11716 /* We have a name. Let's check if it's valid and convert it
11718 get_syscall_by_name (cur_name, &s);
11720 if (s.number == UNKNOWN_SYSCALL)
11721 /* Here we have to issue an error instead of a warning,
11722 because GDB cannot do anything useful if there's no
11723 syscall number to be caught. */
11724 error (_("Unknown syscall name '%s'."), cur_name);
11727 /* Ok, it's valid. */
11728 VEC_safe_push (int, result, s.number);
11731 discard_cleanups (cleanup);
11735 /* Implement the "catch syscall" command. */
11738 catch_syscall_command_1 (char *arg, int from_tty,
11739 struct cmd_list_element *command)
11744 struct gdbarch *gdbarch = get_current_arch ();
11746 /* Checking if the feature if supported. */
11747 if (gdbarch_get_syscall_number_p (gdbarch) == 0)
11748 error (_("The feature 'catch syscall' is not supported on \
11749 this architecture yet."));
11751 tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
11753 arg = skip_spaces (arg);
11755 /* We need to do this first "dummy" translation in order
11756 to get the syscall XML file loaded or, most important,
11757 to display a warning to the user if there's no XML file
11758 for his/her architecture. */
11759 get_syscall_by_number (0, &s);
11761 /* The allowed syntax is:
11763 catch syscall <name | number> [<name | number> ... <name | number>]
11765 Let's check if there's a syscall name. */
11768 filter = catch_syscall_split_args (arg);
11772 create_syscall_event_catchpoint (tempflag, filter,
11773 &catch_syscall_breakpoint_ops);
11777 catch_command (char *arg, int from_tty)
11779 error (_("Catch requires an event name."));
11784 tcatch_command (char *arg, int from_tty)
11786 error (_("Catch requires an event name."));
11789 /* A qsort comparison function that sorts breakpoints in order. */
11792 compare_breakpoints (const void *a, const void *b)
11794 const breakpoint_p *ba = a;
11795 uintptr_t ua = (uintptr_t) *ba;
11796 const breakpoint_p *bb = b;
11797 uintptr_t ub = (uintptr_t) *bb;
11799 if ((*ba)->number < (*bb)->number)
11801 else if ((*ba)->number > (*bb)->number)
11804 /* Now sort by address, in case we see, e..g, two breakpoints with
11808 return ua > ub ? 1 : 0;
11811 /* Delete breakpoints by address or line. */
11814 clear_command (char *arg, int from_tty)
11816 struct breakpoint *b, *prev;
11817 VEC(breakpoint_p) *found = 0;
11820 struct symtabs_and_lines sals;
11821 struct symtab_and_line sal;
11823 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
11827 sals = decode_line_with_current_source (arg,
11828 (DECODE_LINE_FUNFIRSTLINE
11829 | DECODE_LINE_LIST_MODE));
11830 make_cleanup (xfree, sals.sals);
11835 sals.sals = (struct symtab_and_line *)
11836 xmalloc (sizeof (struct symtab_and_line));
11837 make_cleanup (xfree, sals.sals);
11838 init_sal (&sal); /* Initialize to zeroes. */
11840 /* Set sal's line, symtab, pc, and pspace to the values
11841 corresponding to the last call to print_frame_info. If the
11842 codepoint is not valid, this will set all the fields to 0. */
11843 get_last_displayed_sal (&sal);
11844 if (sal.symtab == 0)
11845 error (_("No source file specified."));
11847 sals.sals[0] = sal;
11853 /* We don't call resolve_sal_pc here. That's not as bad as it
11854 seems, because all existing breakpoints typically have both
11855 file/line and pc set. So, if clear is given file/line, we can
11856 match this to existing breakpoint without obtaining pc at all.
11858 We only support clearing given the address explicitly
11859 present in breakpoint table. Say, we've set breakpoint
11860 at file:line. There were several PC values for that file:line,
11861 due to optimization, all in one block.
11863 We've picked one PC value. If "clear" is issued with another
11864 PC corresponding to the same file:line, the breakpoint won't
11865 be cleared. We probably can still clear the breakpoint, but
11866 since the other PC value is never presented to user, user
11867 can only find it by guessing, and it does not seem important
11868 to support that. */
11870 /* For each line spec given, delete bps which correspond to it. Do
11871 it in two passes, solely to preserve the current behavior that
11872 from_tty is forced true if we delete more than one
11876 make_cleanup (VEC_cleanup (breakpoint_p), &found);
11877 for (i = 0; i < sals.nelts; i++)
11881 /* If exact pc given, clear bpts at that pc.
11882 If line given (pc == 0), clear all bpts on specified line.
11883 If defaulting, clear all bpts on default line
11886 defaulting sal.pc != 0 tests to do
11891 1 0 <can't happen> */
11893 sal = sals.sals[i];
11894 is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename);
11896 /* Find all matching breakpoints and add them to 'found'. */
11897 ALL_BREAKPOINTS (b)
11900 /* Are we going to delete b? */
11901 if (b->type != bp_none && !is_watchpoint (b))
11903 struct bp_location *loc = b->loc;
11904 for (; loc; loc = loc->next)
11906 /* If the user specified file:line, don't allow a PC
11907 match. This matches historical gdb behavior. */
11908 int pc_match = (!sal.explicit_line
11910 && (loc->pspace == sal.pspace)
11911 && (loc->address == sal.pc)
11912 && (!section_is_overlay (loc->section)
11913 || loc->section == sal.section));
11914 int line_match = 0;
11916 if ((default_match || sal.explicit_line)
11917 && loc->source_file != NULL
11918 && sal.symtab != NULL
11919 && sal.pspace == loc->pspace
11920 && loc->line_number == sal.line)
11922 if (filename_cmp (loc->source_file,
11923 sal.symtab->filename) == 0)
11925 else if (!IS_ABSOLUTE_PATH (sal.symtab->filename)
11926 && compare_filenames_for_search (loc->source_file,
11927 sal.symtab->filename))
11931 if (pc_match || line_match)
11940 VEC_safe_push(breakpoint_p, found, b);
11944 /* Now go thru the 'found' chain and delete them. */
11945 if (VEC_empty(breakpoint_p, found))
11948 error (_("No breakpoint at %s."), arg);
11950 error (_("No breakpoint at this line."));
11953 /* Remove duplicates from the vec. */
11954 qsort (VEC_address (breakpoint_p, found),
11955 VEC_length (breakpoint_p, found),
11956 sizeof (breakpoint_p),
11957 compare_breakpoints);
11958 prev = VEC_index (breakpoint_p, found, 0);
11959 for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix)
11963 VEC_ordered_remove (breakpoint_p, found, ix);
11968 if (VEC_length(breakpoint_p, found) > 1)
11969 from_tty = 1; /* Always report if deleted more than one. */
11972 if (VEC_length(breakpoint_p, found) == 1)
11973 printf_unfiltered (_("Deleted breakpoint "));
11975 printf_unfiltered (_("Deleted breakpoints "));
11977 annotate_breakpoints_changed ();
11979 for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++)
11982 printf_unfiltered ("%d ", b->number);
11983 delete_breakpoint (b);
11986 putchar_unfiltered ('\n');
11988 do_cleanups (cleanups);
11991 /* Delete breakpoint in BS if they are `delete' breakpoints and
11992 all breakpoints that are marked for deletion, whether hit or not.
11993 This is called after any breakpoint is hit, or after errors. */
11996 breakpoint_auto_delete (bpstat bs)
11998 struct breakpoint *b, *b_tmp;
12000 for (; bs; bs = bs->next)
12001 if (bs->breakpoint_at
12002 && bs->breakpoint_at->disposition == disp_del
12004 delete_breakpoint (bs->breakpoint_at);
12006 ALL_BREAKPOINTS_SAFE (b, b_tmp)
12008 if (b->disposition == disp_del_at_next_stop)
12009 delete_breakpoint (b);
12013 /* A comparison function for bp_location AP and BP being interfaced to
12014 qsort. Sort elements primarily by their ADDRESS (no matter what
12015 does breakpoint_address_is_meaningful say for its OWNER),
12016 secondarily by ordering first bp_permanent OWNERed elements and
12017 terciarily just ensuring the array is sorted stable way despite
12018 qsort being an unstable algorithm. */
12021 bp_location_compare (const void *ap, const void *bp)
12023 struct bp_location *a = *(void **) ap;
12024 struct bp_location *b = *(void **) bp;
12025 /* A and B come from existing breakpoints having non-NULL OWNER. */
12026 int a_perm = a->owner->enable_state == bp_permanent;
12027 int b_perm = b->owner->enable_state == bp_permanent;
12029 if (a->address != b->address)
12030 return (a->address > b->address) - (a->address < b->address);
12032 /* Sort locations at the same address by their pspace number, keeping
12033 locations of the same inferior (in a multi-inferior environment)
12036 if (a->pspace->num != b->pspace->num)
12037 return ((a->pspace->num > b->pspace->num)
12038 - (a->pspace->num < b->pspace->num));
12040 /* Sort permanent breakpoints first. */
12041 if (a_perm != b_perm)
12042 return (a_perm < b_perm) - (a_perm > b_perm);
12044 /* Make the internal GDB representation stable across GDB runs
12045 where A and B memory inside GDB can differ. Breakpoint locations of
12046 the same type at the same address can be sorted in arbitrary order. */
12048 if (a->owner->number != b->owner->number)
12049 return ((a->owner->number > b->owner->number)
12050 - (a->owner->number < b->owner->number));
12052 return (a > b) - (a < b);
12055 /* Set bp_location_placed_address_before_address_max and
12056 bp_location_shadow_len_after_address_max according to the current
12057 content of the bp_location array. */
12060 bp_location_target_extensions_update (void)
12062 struct bp_location *bl, **blp_tmp;
12064 bp_location_placed_address_before_address_max = 0;
12065 bp_location_shadow_len_after_address_max = 0;
12067 ALL_BP_LOCATIONS (bl, blp_tmp)
12069 CORE_ADDR start, end, addr;
12071 if (!bp_location_has_shadow (bl))
12074 start = bl->target_info.placed_address;
12075 end = start + bl->target_info.shadow_len;
12077 gdb_assert (bl->address >= start);
12078 addr = bl->address - start;
12079 if (addr > bp_location_placed_address_before_address_max)
12080 bp_location_placed_address_before_address_max = addr;
12082 /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */
12084 gdb_assert (bl->address < end);
12085 addr = end - bl->address;
12086 if (addr > bp_location_shadow_len_after_address_max)
12087 bp_location_shadow_len_after_address_max = addr;
12091 /* Download tracepoint locations if they haven't been. */
12094 download_tracepoint_locations (void)
12096 struct breakpoint *b;
12097 struct cleanup *old_chain;
12099 if (!target_can_download_tracepoint ())
12102 old_chain = save_current_space_and_thread ();
12104 ALL_TRACEPOINTS (b)
12106 struct bp_location *bl;
12107 struct tracepoint *t;
12108 int bp_location_downloaded = 0;
12110 if ((b->type == bp_fast_tracepoint
12111 ? !may_insert_fast_tracepoints
12112 : !may_insert_tracepoints))
12115 for (bl = b->loc; bl; bl = bl->next)
12117 /* In tracepoint, locations are _never_ duplicated, so
12118 should_be_inserted is equivalent to
12119 unduplicated_should_be_inserted. */
12120 if (!should_be_inserted (bl) || bl->inserted)
12123 switch_to_program_space_and_thread (bl->pspace);
12125 target_download_tracepoint (bl);
12128 bp_location_downloaded = 1;
12130 t = (struct tracepoint *) b;
12131 t->number_on_target = b->number;
12132 if (bp_location_downloaded)
12133 observer_notify_breakpoint_modified (b);
12136 do_cleanups (old_chain);
12139 /* Swap the insertion/duplication state between two locations. */
12142 swap_insertion (struct bp_location *left, struct bp_location *right)
12144 const int left_inserted = left->inserted;
12145 const int left_duplicate = left->duplicate;
12146 const int left_needs_update = left->needs_update;
12147 const struct bp_target_info left_target_info = left->target_info;
12149 /* Locations of tracepoints can never be duplicated. */
12150 if (is_tracepoint (left->owner))
12151 gdb_assert (!left->duplicate);
12152 if (is_tracepoint (right->owner))
12153 gdb_assert (!right->duplicate);
12155 left->inserted = right->inserted;
12156 left->duplicate = right->duplicate;
12157 left->needs_update = right->needs_update;
12158 left->target_info = right->target_info;
12159 right->inserted = left_inserted;
12160 right->duplicate = left_duplicate;
12161 right->needs_update = left_needs_update;
12162 right->target_info = left_target_info;
12165 /* Force the re-insertion of the locations at ADDRESS. This is called
12166 once a new/deleted/modified duplicate location is found and we are evaluating
12167 conditions on the target's side. Such conditions need to be updated on
12171 force_breakpoint_reinsertion (struct bp_location *bl)
12173 struct bp_location **locp = NULL, **loc2p;
12174 struct bp_location *loc;
12175 CORE_ADDR address = 0;
12178 address = bl->address;
12179 pspace_num = bl->pspace->num;
12181 /* This is only meaningful if the target is
12182 evaluating conditions and if the user has
12183 opted for condition evaluation on the target's
12185 if (gdb_evaluates_breakpoint_condition_p ()
12186 || !target_supports_evaluation_of_breakpoint_conditions ())
12189 /* Flag all breakpoint locations with this address and
12190 the same program space as the location
12191 as "its condition has changed". We need to
12192 update the conditions on the target's side. */
12193 ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address)
12197 if (!is_breakpoint (loc->owner)
12198 || pspace_num != loc->pspace->num)
12201 /* Flag the location appropriately. We use a different state to
12202 let everyone know that we already updated the set of locations
12203 with addr bl->address and program space bl->pspace. This is so
12204 we don't have to keep calling these functions just to mark locations
12205 that have already been marked. */
12206 loc->condition_changed = condition_updated;
12208 /* Free the agent expression bytecode as well. We will compute
12210 if (loc->cond_bytecode)
12212 free_agent_expr (loc->cond_bytecode);
12213 loc->cond_bytecode = NULL;
12218 /* If SHOULD_INSERT is false, do not insert any breakpoint locations
12219 into the inferior, only remove already-inserted locations that no
12220 longer should be inserted. Functions that delete a breakpoint or
12221 breakpoints should pass false, so that deleting a breakpoint
12222 doesn't have the side effect of inserting the locations of other
12223 breakpoints that are marked not-inserted, but should_be_inserted
12224 returns true on them.
12226 This behaviour is useful is situations close to tear-down -- e.g.,
12227 after an exec, while the target still has execution, but breakpoint
12228 shadows of the previous executable image should *NOT* be restored
12229 to the new image; or before detaching, where the target still has
12230 execution and wants to delete breakpoints from GDB's lists, and all
12231 breakpoints had already been removed from the inferior. */
12234 update_global_location_list (int should_insert)
12236 struct breakpoint *b;
12237 struct bp_location **locp, *loc;
12238 struct cleanup *cleanups;
12239 /* Last breakpoint location address that was marked for update. */
12240 CORE_ADDR last_addr = 0;
12241 /* Last breakpoint location program space that was marked for update. */
12242 int last_pspace_num = -1;
12244 /* Used in the duplicates detection below. When iterating over all
12245 bp_locations, points to the first bp_location of a given address.
12246 Breakpoints and watchpoints of different types are never
12247 duplicates of each other. Keep one pointer for each type of
12248 breakpoint/watchpoint, so we only need to loop over all locations
12250 struct bp_location *bp_loc_first; /* breakpoint */
12251 struct bp_location *wp_loc_first; /* hardware watchpoint */
12252 struct bp_location *awp_loc_first; /* access watchpoint */
12253 struct bp_location *rwp_loc_first; /* read watchpoint */
12255 /* Saved former bp_location array which we compare against the newly
12256 built bp_location from the current state of ALL_BREAKPOINTS. */
12257 struct bp_location **old_location, **old_locp;
12258 unsigned old_location_count;
12260 old_location = bp_location;
12261 old_location_count = bp_location_count;
12262 bp_location = NULL;
12263 bp_location_count = 0;
12264 cleanups = make_cleanup (xfree, old_location);
12266 ALL_BREAKPOINTS (b)
12267 for (loc = b->loc; loc; loc = loc->next)
12268 bp_location_count++;
12270 bp_location = xmalloc (sizeof (*bp_location) * bp_location_count);
12271 locp = bp_location;
12272 ALL_BREAKPOINTS (b)
12273 for (loc = b->loc; loc; loc = loc->next)
12275 qsort (bp_location, bp_location_count, sizeof (*bp_location),
12276 bp_location_compare);
12278 bp_location_target_extensions_update ();
12280 /* Identify bp_location instances that are no longer present in the
12281 new list, and therefore should be freed. Note that it's not
12282 necessary that those locations should be removed from inferior --
12283 if there's another location at the same address (previously
12284 marked as duplicate), we don't need to remove/insert the
12287 LOCP is kept in sync with OLD_LOCP, each pointing to the current
12288 and former bp_location array state respectively. */
12290 locp = bp_location;
12291 for (old_locp = old_location; old_locp < old_location + old_location_count;
12294 struct bp_location *old_loc = *old_locp;
12295 struct bp_location **loc2p;
12297 /* Tells if 'old_loc' is found among the new locations. If
12298 not, we have to free it. */
12299 int found_object = 0;
12300 /* Tells if the location should remain inserted in the target. */
12301 int keep_in_target = 0;
12304 /* Skip LOCP entries which will definitely never be needed.
12305 Stop either at or being the one matching OLD_LOC. */
12306 while (locp < bp_location + bp_location_count
12307 && (*locp)->address < old_loc->address)
12311 (loc2p < bp_location + bp_location_count
12312 && (*loc2p)->address == old_loc->address);
12315 /* Check if this is a new/duplicated location or a duplicated
12316 location that had its condition modified. If so, we want to send
12317 its condition to the target if evaluation of conditions is taking
12319 if ((*loc2p)->condition_changed == condition_modified
12320 && (last_addr != old_loc->address
12321 || last_pspace_num != old_loc->pspace->num))
12323 force_breakpoint_reinsertion (*loc2p);
12324 last_pspace_num = old_loc->pspace->num;
12327 if (*loc2p == old_loc)
12331 /* We have already handled this address, update it so that we don't
12332 have to go through updates again. */
12333 last_addr = old_loc->address;
12335 /* Target-side condition evaluation: Handle deleted locations. */
12337 force_breakpoint_reinsertion (old_loc);
12339 /* If this location is no longer present, and inserted, look if
12340 there's maybe a new location at the same address. If so,
12341 mark that one inserted, and don't remove this one. This is
12342 needed so that we don't have a time window where a breakpoint
12343 at certain location is not inserted. */
12345 if (old_loc->inserted)
12347 /* If the location is inserted now, we might have to remove
12350 if (found_object && should_be_inserted (old_loc))
12352 /* The location is still present in the location list,
12353 and still should be inserted. Don't do anything. */
12354 keep_in_target = 1;
12358 /* This location still exists, but it won't be kept in the
12359 target since it may have been disabled. We proceed to
12360 remove its target-side condition. */
12362 /* The location is either no longer present, or got
12363 disabled. See if there's another location at the
12364 same address, in which case we don't need to remove
12365 this one from the target. */
12367 /* OLD_LOC comes from existing struct breakpoint. */
12368 if (breakpoint_address_is_meaningful (old_loc->owner))
12371 (loc2p < bp_location + bp_location_count
12372 && (*loc2p)->address == old_loc->address);
12375 struct bp_location *loc2 = *loc2p;
12377 if (breakpoint_locations_match (loc2, old_loc))
12379 /* Read watchpoint locations are switched to
12380 access watchpoints, if the former are not
12381 supported, but the latter are. */
12382 if (is_hardware_watchpoint (old_loc->owner))
12384 gdb_assert (is_hardware_watchpoint (loc2->owner));
12385 loc2->watchpoint_type = old_loc->watchpoint_type;
12388 /* loc2 is a duplicated location. We need to check
12389 if it should be inserted in case it will be
12391 if (loc2 != old_loc
12392 && unduplicated_should_be_inserted (loc2))
12394 swap_insertion (old_loc, loc2);
12395 keep_in_target = 1;
12403 if (!keep_in_target)
12405 if (remove_breakpoint (old_loc, mark_uninserted))
12407 /* This is just about all we can do. We could keep
12408 this location on the global list, and try to
12409 remove it next time, but there's no particular
12410 reason why we will succeed next time.
12412 Note that at this point, old_loc->owner is still
12413 valid, as delete_breakpoint frees the breakpoint
12414 only after calling us. */
12415 printf_filtered (_("warning: Error removing "
12416 "breakpoint %d\n"),
12417 old_loc->owner->number);
12425 if (removed && non_stop
12426 && breakpoint_address_is_meaningful (old_loc->owner)
12427 && !is_hardware_watchpoint (old_loc->owner))
12429 /* This location was removed from the target. In
12430 non-stop mode, a race condition is possible where
12431 we've removed a breakpoint, but stop events for that
12432 breakpoint are already queued and will arrive later.
12433 We apply an heuristic to be able to distinguish such
12434 SIGTRAPs from other random SIGTRAPs: we keep this
12435 breakpoint location for a bit, and will retire it
12436 after we see some number of events. The theory here
12437 is that reporting of events should, "on the average",
12438 be fair, so after a while we'll see events from all
12439 threads that have anything of interest, and no longer
12440 need to keep this breakpoint location around. We
12441 don't hold locations forever so to reduce chances of
12442 mistaking a non-breakpoint SIGTRAP for a breakpoint
12445 The heuristic failing can be disastrous on
12446 decr_pc_after_break targets.
12448 On decr_pc_after_break targets, like e.g., x86-linux,
12449 if we fail to recognize a late breakpoint SIGTRAP,
12450 because events_till_retirement has reached 0 too
12451 soon, we'll fail to do the PC adjustment, and report
12452 a random SIGTRAP to the user. When the user resumes
12453 the inferior, it will most likely immediately crash
12454 with SIGILL/SIGBUS/SIGSEGV, or worse, get silently
12455 corrupted, because of being resumed e.g., in the
12456 middle of a multi-byte instruction, or skipped a
12457 one-byte instruction. This was actually seen happen
12458 on native x86-linux, and should be less rare on
12459 targets that do not support new thread events, like
12460 remote, due to the heuristic depending on
12463 Mistaking a random SIGTRAP for a breakpoint trap
12464 causes similar symptoms (PC adjustment applied when
12465 it shouldn't), but then again, playing with SIGTRAPs
12466 behind the debugger's back is asking for trouble.
12468 Since hardware watchpoint traps are always
12469 distinguishable from other traps, so we don't need to
12470 apply keep hardware watchpoint moribund locations
12471 around. We simply always ignore hardware watchpoint
12472 traps we can no longer explain. */
12474 old_loc->events_till_retirement = 3 * (thread_count () + 1);
12475 old_loc->owner = NULL;
12477 VEC_safe_push (bp_location_p, moribund_locations, old_loc);
12481 old_loc->owner = NULL;
12482 decref_bp_location (&old_loc);
12487 /* Rescan breakpoints at the same address and section, marking the
12488 first one as "first" and any others as "duplicates". This is so
12489 that the bpt instruction is only inserted once. If we have a
12490 permanent breakpoint at the same place as BPT, make that one the
12491 official one, and the rest as duplicates. Permanent breakpoints
12492 are sorted first for the same address.
12494 Do the same for hardware watchpoints, but also considering the
12495 watchpoint's type (regular/access/read) and length. */
12497 bp_loc_first = NULL;
12498 wp_loc_first = NULL;
12499 awp_loc_first = NULL;
12500 rwp_loc_first = NULL;
12501 ALL_BP_LOCATIONS (loc, locp)
12503 /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always
12505 struct bp_location **loc_first_p;
12508 if (!unduplicated_should_be_inserted (loc)
12509 || !breakpoint_address_is_meaningful (b)
12510 /* Don't detect duplicate for tracepoint locations because they are
12511 never duplicated. See the comments in field `duplicate' of
12512 `struct bp_location'. */
12513 || is_tracepoint (b))
12515 /* Clear the condition modification flag. */
12516 loc->condition_changed = condition_unchanged;
12520 /* Permanent breakpoint should always be inserted. */
12521 if (b->enable_state == bp_permanent && ! loc->inserted)
12522 internal_error (__FILE__, __LINE__,
12523 _("allegedly permanent breakpoint is not "
12524 "actually inserted"));
12526 if (b->type == bp_hardware_watchpoint)
12527 loc_first_p = &wp_loc_first;
12528 else if (b->type == bp_read_watchpoint)
12529 loc_first_p = &rwp_loc_first;
12530 else if (b->type == bp_access_watchpoint)
12531 loc_first_p = &awp_loc_first;
12533 loc_first_p = &bp_loc_first;
12535 if (*loc_first_p == NULL
12536 || (overlay_debugging && loc->section != (*loc_first_p)->section)
12537 || !breakpoint_locations_match (loc, *loc_first_p))
12539 *loc_first_p = loc;
12540 loc->duplicate = 0;
12542 if (is_breakpoint (loc->owner) && loc->condition_changed)
12544 loc->needs_update = 1;
12545 /* Clear the condition modification flag. */
12546 loc->condition_changed = condition_unchanged;
12552 /* This and the above ensure the invariant that the first location
12553 is not duplicated, and is the inserted one.
12554 All following are marked as duplicated, and are not inserted. */
12556 swap_insertion (loc, *loc_first_p);
12557 loc->duplicate = 1;
12559 /* Clear the condition modification flag. */
12560 loc->condition_changed = condition_unchanged;
12562 if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted
12563 && b->enable_state != bp_permanent)
12564 internal_error (__FILE__, __LINE__,
12565 _("another breakpoint was inserted on top of "
12566 "a permanent breakpoint"));
12569 if (breakpoints_always_inserted_mode ()
12570 && (have_live_inferiors ()
12571 || (gdbarch_has_global_breakpoints (target_gdbarch ()))))
12574 insert_breakpoint_locations ();
12577 /* Though should_insert is false, we may need to update conditions
12578 on the target's side if it is evaluating such conditions. We
12579 only update conditions for locations that are marked
12581 update_inserted_breakpoint_locations ();
12586 download_tracepoint_locations ();
12588 do_cleanups (cleanups);
12592 breakpoint_retire_moribund (void)
12594 struct bp_location *loc;
12597 for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
12598 if (--(loc->events_till_retirement) == 0)
12600 decref_bp_location (&loc);
12601 VEC_unordered_remove (bp_location_p, moribund_locations, ix);
12607 update_global_location_list_nothrow (int inserting)
12609 volatile struct gdb_exception e;
12611 TRY_CATCH (e, RETURN_MASK_ERROR)
12612 update_global_location_list (inserting);
12615 /* Clear BKP from a BPS. */
12618 bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt)
12622 for (bs = bps; bs; bs = bs->next)
12623 if (bs->breakpoint_at == bpt)
12625 bs->breakpoint_at = NULL;
12626 bs->old_val = NULL;
12627 /* bs->commands will be freed later. */
12631 /* Callback for iterate_over_threads. */
12633 bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
12635 struct breakpoint *bpt = data;
12637 bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
12641 /* Helper for breakpoint and tracepoint breakpoint_ops->mention
12645 say_where (struct breakpoint *b)
12647 struct ui_out *uiout = current_uiout;
12648 struct value_print_options opts;
12650 get_user_print_options (&opts);
12652 /* i18n: cagney/2005-02-11: Below needs to be merged into a
12654 if (b->loc == NULL)
12656 printf_filtered (_(" (%s) pending."), b->addr_string);
12660 if (opts.addressprint || b->loc->source_file == NULL)
12662 printf_filtered (" at ");
12663 fputs_filtered (paddress (b->loc->gdbarch, b->loc->address),
12666 if (b->loc->source_file)
12668 /* If there is a single location, we can print the location
12670 if (b->loc->next == NULL)
12671 printf_filtered (": file %s, line %d.",
12672 b->loc->source_file, b->loc->line_number);
12674 /* This is not ideal, but each location may have a
12675 different file name, and this at least reflects the
12676 real situation somewhat. */
12677 printf_filtered (": %s.", b->addr_string);
12682 struct bp_location *loc = b->loc;
12684 for (; loc; loc = loc->next)
12686 printf_filtered (" (%d locations)", n);
12691 /* Default bp_location_ops methods. */
12694 bp_location_dtor (struct bp_location *self)
12696 xfree (self->cond);
12697 if (self->cond_bytecode)
12698 free_agent_expr (self->cond_bytecode);
12699 xfree (self->function_name);
12700 xfree (self->source_file);
12703 static const struct bp_location_ops bp_location_ops =
12708 /* Default breakpoint_ops methods all breakpoint_ops ultimately
12712 base_breakpoint_dtor (struct breakpoint *self)
12714 decref_counted_command_line (&self->commands);
12715 xfree (self->cond_string);
12716 xfree (self->addr_string);
12717 xfree (self->filter);
12718 xfree (self->addr_string_range_end);
12721 static struct bp_location *
12722 base_breakpoint_allocate_location (struct breakpoint *self)
12724 struct bp_location *loc;
12726 loc = XNEW (struct bp_location);
12727 init_bp_location (loc, &bp_location_ops, self);
12732 base_breakpoint_re_set (struct breakpoint *b)
12734 /* Nothing to re-set. */
12737 #define internal_error_pure_virtual_called() \
12738 gdb_assert_not_reached ("pure virtual function called")
12741 base_breakpoint_insert_location (struct bp_location *bl)
12743 internal_error_pure_virtual_called ();
12747 base_breakpoint_remove_location (struct bp_location *bl)
12749 internal_error_pure_virtual_called ();
12753 base_breakpoint_breakpoint_hit (const struct bp_location *bl,
12754 struct address_space *aspace,
12756 const struct target_waitstatus *ws)
12758 internal_error_pure_virtual_called ();
12762 base_breakpoint_check_status (bpstat bs)
12767 /* A "works_in_software_mode" breakpoint_ops method that just internal
12771 base_breakpoint_works_in_software_mode (const struct breakpoint *b)
12773 internal_error_pure_virtual_called ();
12776 /* A "resources_needed" breakpoint_ops method that just internal
12780 base_breakpoint_resources_needed (const struct bp_location *bl)
12782 internal_error_pure_virtual_called ();
12785 static enum print_stop_action
12786 base_breakpoint_print_it (bpstat bs)
12788 internal_error_pure_virtual_called ();
12792 base_breakpoint_print_one_detail (const struct breakpoint *self,
12793 struct ui_out *uiout)
12799 base_breakpoint_print_mention (struct breakpoint *b)
12801 internal_error_pure_virtual_called ();
12805 base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp)
12807 internal_error_pure_virtual_called ();
12811 base_breakpoint_create_sals_from_address (char **arg,
12812 struct linespec_result *canonical,
12813 enum bptype type_wanted,
12817 internal_error_pure_virtual_called ();
12821 base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch,
12822 struct linespec_result *c,
12823 struct linespec_sals *lsal,
12825 char *extra_string,
12826 enum bptype type_wanted,
12827 enum bpdisp disposition,
12829 int task, int ignore_count,
12830 const struct breakpoint_ops *o,
12831 int from_tty, int enabled,
12832 int internal, unsigned flags)
12834 internal_error_pure_virtual_called ();
12838 base_breakpoint_decode_linespec (struct breakpoint *b, char **s,
12839 struct symtabs_and_lines *sals)
12841 internal_error_pure_virtual_called ();
12844 static struct breakpoint_ops base_breakpoint_ops =
12846 base_breakpoint_dtor,
12847 base_breakpoint_allocate_location,
12848 base_breakpoint_re_set,
12849 base_breakpoint_insert_location,
12850 base_breakpoint_remove_location,
12851 base_breakpoint_breakpoint_hit,
12852 base_breakpoint_check_status,
12853 base_breakpoint_resources_needed,
12854 base_breakpoint_works_in_software_mode,
12855 base_breakpoint_print_it,
12857 base_breakpoint_print_one_detail,
12858 base_breakpoint_print_mention,
12859 base_breakpoint_print_recreate,
12860 base_breakpoint_create_sals_from_address,
12861 base_breakpoint_create_breakpoints_sal,
12862 base_breakpoint_decode_linespec,
12865 /* Default breakpoint_ops methods. */
12868 bkpt_re_set (struct breakpoint *b)
12870 /* FIXME: is this still reachable? */
12871 if (b->addr_string == NULL)
12873 /* Anything without a string can't be re-set. */
12874 delete_breakpoint (b);
12878 breakpoint_re_set_default (b);
12882 bkpt_insert_location (struct bp_location *bl)
12884 if (bl->loc_type == bp_loc_hardware_breakpoint)
12885 return target_insert_hw_breakpoint (bl->gdbarch,
12888 return target_insert_breakpoint (bl->gdbarch,
12893 bkpt_remove_location (struct bp_location *bl)
12895 if (bl->loc_type == bp_loc_hardware_breakpoint)
12896 return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info);
12898 return target_remove_breakpoint (bl->gdbarch, &bl->target_info);
12902 bkpt_breakpoint_hit (const struct bp_location *bl,
12903 struct address_space *aspace, CORE_ADDR bp_addr,
12904 const struct target_waitstatus *ws)
12906 struct breakpoint *b = bl->owner;
12908 if (ws->kind != TARGET_WAITKIND_STOPPED
12909 || ws->value.sig != GDB_SIGNAL_TRAP)
12912 if (!breakpoint_address_match (bl->pspace->aspace, bl->address,
12916 if (overlay_debugging /* unmapped overlay section */
12917 && section_is_overlay (bl->section)
12918 && !section_is_mapped (bl->section))
12925 bkpt_resources_needed (const struct bp_location *bl)
12927 gdb_assert (bl->owner->type == bp_hardware_breakpoint);
12932 static enum print_stop_action
12933 bkpt_print_it (bpstat bs)
12935 struct breakpoint *b;
12936 const struct bp_location *bl;
12938 struct ui_out *uiout = current_uiout;
12940 gdb_assert (bs->bp_location_at != NULL);
12942 bl = bs->bp_location_at;
12943 b = bs->breakpoint_at;
12945 bp_temp = b->disposition == disp_del;
12946 if (bl->address != bl->requested_address)
12947 breakpoint_adjustment_warning (bl->requested_address,
12950 annotate_breakpoint (b->number);
12952 ui_out_text (uiout, "\nTemporary breakpoint ");
12954 ui_out_text (uiout, "\nBreakpoint ");
12955 if (ui_out_is_mi_like_p (uiout))
12957 ui_out_field_string (uiout, "reason",
12958 async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
12959 ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
12961 ui_out_field_int (uiout, "bkptno", b->number);
12962 ui_out_text (uiout, ", ");
12964 return PRINT_SRC_AND_LOC;
12968 bkpt_print_mention (struct breakpoint *b)
12970 if (ui_out_is_mi_like_p (current_uiout))
12975 case bp_breakpoint:
12976 case bp_gnu_ifunc_resolver:
12977 if (b->disposition == disp_del)
12978 printf_filtered (_("Temporary breakpoint"));
12980 printf_filtered (_("Breakpoint"));
12981 printf_filtered (_(" %d"), b->number);
12982 if (b->type == bp_gnu_ifunc_resolver)
12983 printf_filtered (_(" at gnu-indirect-function resolver"));
12985 case bp_hardware_breakpoint:
12986 printf_filtered (_("Hardware assisted breakpoint %d"), b->number);
12989 printf_filtered (_("Dprintf %d"), b->number);
12997 bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp)
12999 if (tp->type == bp_breakpoint && tp->disposition == disp_del)
13000 fprintf_unfiltered (fp, "tbreak");
13001 else if (tp->type == bp_breakpoint)
13002 fprintf_unfiltered (fp, "break");
13003 else if (tp->type == bp_hardware_breakpoint
13004 && tp->disposition == disp_del)
13005 fprintf_unfiltered (fp, "thbreak");
13006 else if (tp->type == bp_hardware_breakpoint)
13007 fprintf_unfiltered (fp, "hbreak");
13009 internal_error (__FILE__, __LINE__,
13010 _("unhandled breakpoint type %d"), (int) tp->type);
13012 fprintf_unfiltered (fp, " %s", tp->addr_string);
13013 print_recreate_thread (tp, fp);
13017 bkpt_create_sals_from_address (char **arg,
13018 struct linespec_result *canonical,
13019 enum bptype type_wanted,
13020 char *addr_start, char **copy_arg)
13022 create_sals_from_address_default (arg, canonical, type_wanted,
13023 addr_start, copy_arg);
13027 bkpt_create_breakpoints_sal (struct gdbarch *gdbarch,
13028 struct linespec_result *canonical,
13029 struct linespec_sals *lsal,
13031 char *extra_string,
13032 enum bptype type_wanted,
13033 enum bpdisp disposition,
13035 int task, int ignore_count,
13036 const struct breakpoint_ops *ops,
13037 int from_tty, int enabled,
13038 int internal, unsigned flags)
13040 create_breakpoints_sal_default (gdbarch, canonical, lsal,
13041 cond_string, extra_string,
13043 disposition, thread, task,
13044 ignore_count, ops, from_tty,
13045 enabled, internal, flags);
13049 bkpt_decode_linespec (struct breakpoint *b, char **s,
13050 struct symtabs_and_lines *sals)
13052 decode_linespec_default (b, s, sals);
13055 /* Virtual table for internal breakpoints. */
13058 internal_bkpt_re_set (struct breakpoint *b)
13062 /* Delete overlay event and longjmp master breakpoints; they
13063 will be reset later by breakpoint_re_set. */
13064 case bp_overlay_event:
13065 case bp_longjmp_master:
13066 case bp_std_terminate_master:
13067 case bp_exception_master:
13068 delete_breakpoint (b);
13071 /* This breakpoint is special, it's set up when the inferior
13072 starts and we really don't want to touch it. */
13073 case bp_shlib_event:
13075 /* Like bp_shlib_event, this breakpoint type is special. Once
13076 it is set up, we do not want to touch it. */
13077 case bp_thread_event:
13083 internal_bkpt_check_status (bpstat bs)
13085 if (bs->breakpoint_at->type == bp_shlib_event)
13087 /* If requested, stop when the dynamic linker notifies GDB of
13088 events. This allows the user to get control and place
13089 breakpoints in initializer routines for dynamically loaded
13090 objects (among other things). */
13091 bs->stop = stop_on_solib_events;
13092 bs->print = stop_on_solib_events;
13098 static enum print_stop_action
13099 internal_bkpt_print_it (bpstat bs)
13101 struct ui_out *uiout = current_uiout;
13102 struct breakpoint *b;
13104 b = bs->breakpoint_at;
13108 case bp_shlib_event:
13109 /* Did we stop because the user set the stop_on_solib_events
13110 variable? (If so, we report this as a generic, "Stopped due
13111 to shlib event" message.) */
13112 print_solib_event (0);
13115 case bp_thread_event:
13116 /* Not sure how we will get here.
13117 GDB should not stop for these breakpoints. */
13118 printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
13121 case bp_overlay_event:
13122 /* By analogy with the thread event, GDB should not stop for these. */
13123 printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
13126 case bp_longjmp_master:
13127 /* These should never be enabled. */
13128 printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n"));
13131 case bp_std_terminate_master:
13132 /* These should never be enabled. */
13133 printf_filtered (_("std::terminate Master Breakpoint: "
13134 "gdb should not stop!\n"));
13137 case bp_exception_master:
13138 /* These should never be enabled. */
13139 printf_filtered (_("Exception Master Breakpoint: "
13140 "gdb should not stop!\n"));
13144 return PRINT_NOTHING;
13148 internal_bkpt_print_mention (struct breakpoint *b)
13150 /* Nothing to mention. These breakpoints are internal. */
13153 /* Virtual table for momentary breakpoints */
13156 momentary_bkpt_re_set (struct breakpoint *b)
13158 /* Keep temporary breakpoints, which can be encountered when we step
13159 over a dlopen call and SOLIB_ADD is resetting the breakpoints.
13160 Otherwise these should have been blown away via the cleanup chain
13161 or by breakpoint_init_inferior when we rerun the executable. */
13165 momentary_bkpt_check_status (bpstat bs)
13167 /* Nothing. The point of these breakpoints is causing a stop. */
13170 static enum print_stop_action
13171 momentary_bkpt_print_it (bpstat bs)
13173 struct ui_out *uiout = current_uiout;
13175 if (ui_out_is_mi_like_p (uiout))
13177 struct breakpoint *b = bs->breakpoint_at;
13182 ui_out_field_string
13184 async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED));
13188 ui_out_field_string
13190 async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED));
13195 return PRINT_UNKNOWN;
13199 momentary_bkpt_print_mention (struct breakpoint *b)
13201 /* Nothing to mention. These breakpoints are internal. */
13204 /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists.
13206 It gets cleared already on the removal of the first one of such placed
13207 breakpoints. This is OK as they get all removed altogether. */
13210 longjmp_bkpt_dtor (struct breakpoint *self)
13212 struct thread_info *tp = find_thread_id (self->thread);
13215 tp->initiating_frame = null_frame_id;
13217 momentary_breakpoint_ops.dtor (self);
13220 /* Specific methods for probe breakpoints. */
13223 bkpt_probe_insert_location (struct bp_location *bl)
13225 int v = bkpt_insert_location (bl);
13229 /* The insertion was successful, now let's set the probe's semaphore
13231 bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch);
13238 bkpt_probe_remove_location (struct bp_location *bl)
13240 /* Let's clear the semaphore before removing the location. */
13241 bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch);
13243 return bkpt_remove_location (bl);
13247 bkpt_probe_create_sals_from_address (char **arg,
13248 struct linespec_result *canonical,
13249 enum bptype type_wanted,
13250 char *addr_start, char **copy_arg)
13252 struct linespec_sals lsal;
13254 lsal.sals = parse_probes (arg, canonical);
13256 *copy_arg = xstrdup (canonical->addr_string);
13257 lsal.canonical = xstrdup (*copy_arg);
13259 VEC_safe_push (linespec_sals, canonical->sals, &lsal);
13263 bkpt_probe_decode_linespec (struct breakpoint *b, char **s,
13264 struct symtabs_and_lines *sals)
13266 *sals = parse_probes (s, NULL);
13268 error (_("probe not found"));
13271 /* The breakpoint_ops structure to be used in tracepoints. */
13274 tracepoint_re_set (struct breakpoint *b)
13276 breakpoint_re_set_default (b);
13280 tracepoint_breakpoint_hit (const struct bp_location *bl,
13281 struct address_space *aspace, CORE_ADDR bp_addr,
13282 const struct target_waitstatus *ws)
13284 /* By definition, the inferior does not report stops at
13290 tracepoint_print_one_detail (const struct breakpoint *self,
13291 struct ui_out *uiout)
13293 struct tracepoint *tp = (struct tracepoint *) self;
13294 if (tp->static_trace_marker_id)
13296 gdb_assert (self->type == bp_static_tracepoint);
13298 ui_out_text (uiout, "\tmarker id is ");
13299 ui_out_field_string (uiout, "static-tracepoint-marker-string-id",
13300 tp->static_trace_marker_id);
13301 ui_out_text (uiout, "\n");
13306 tracepoint_print_mention (struct breakpoint *b)
13308 if (ui_out_is_mi_like_p (current_uiout))
13313 case bp_tracepoint:
13314 printf_filtered (_("Tracepoint"));
13315 printf_filtered (_(" %d"), b->number);
13317 case bp_fast_tracepoint:
13318 printf_filtered (_("Fast tracepoint"));
13319 printf_filtered (_(" %d"), b->number);
13321 case bp_static_tracepoint:
13322 printf_filtered (_("Static tracepoint"));
13323 printf_filtered (_(" %d"), b->number);
13326 internal_error (__FILE__, __LINE__,
13327 _("unhandled tracepoint type %d"), (int) b->type);
13334 tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
13336 struct tracepoint *tp = (struct tracepoint *) self;
13338 if (self->type == bp_fast_tracepoint)
13339 fprintf_unfiltered (fp, "ftrace");
13340 if (self->type == bp_static_tracepoint)
13341 fprintf_unfiltered (fp, "strace");
13342 else if (self->type == bp_tracepoint)
13343 fprintf_unfiltered (fp, "trace");
13345 internal_error (__FILE__, __LINE__,
13346 _("unhandled tracepoint type %d"), (int) self->type);
13348 fprintf_unfiltered (fp, " %s", self->addr_string);
13349 print_recreate_thread (self, fp);
13351 if (tp->pass_count)
13352 fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count);
13356 tracepoint_create_sals_from_address (char **arg,
13357 struct linespec_result *canonical,
13358 enum bptype type_wanted,
13359 char *addr_start, char **copy_arg)
13361 create_sals_from_address_default (arg, canonical, type_wanted,
13362 addr_start, copy_arg);
13366 tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch,
13367 struct linespec_result *canonical,
13368 struct linespec_sals *lsal,
13370 char *extra_string,
13371 enum bptype type_wanted,
13372 enum bpdisp disposition,
13374 int task, int ignore_count,
13375 const struct breakpoint_ops *ops,
13376 int from_tty, int enabled,
13377 int internal, unsigned flags)
13379 create_breakpoints_sal_default (gdbarch, canonical, lsal,
13380 cond_string, extra_string,
13382 disposition, thread, task,
13383 ignore_count, ops, from_tty,
13384 enabled, internal, flags);
13388 tracepoint_decode_linespec (struct breakpoint *b, char **s,
13389 struct symtabs_and_lines *sals)
13391 decode_linespec_default (b, s, sals);
13394 struct breakpoint_ops tracepoint_breakpoint_ops;
13396 /* The breakpoint_ops structure to be use on tracepoints placed in a
13400 tracepoint_probe_create_sals_from_address (char **arg,
13401 struct linespec_result *canonical,
13402 enum bptype type_wanted,
13403 char *addr_start, char **copy_arg)
13405 /* We use the same method for breakpoint on probes. */
13406 bkpt_probe_create_sals_from_address (arg, canonical, type_wanted,
13407 addr_start, copy_arg);
13411 tracepoint_probe_decode_linespec (struct breakpoint *b, char **s,
13412 struct symtabs_and_lines *sals)
13414 /* We use the same method for breakpoint on probes. */
13415 bkpt_probe_decode_linespec (b, s, sals);
13418 static struct breakpoint_ops tracepoint_probe_breakpoint_ops;
13420 /* The breakpoint_ops structure to be used on static tracepoints with
13424 strace_marker_create_sals_from_address (char **arg,
13425 struct linespec_result *canonical,
13426 enum bptype type_wanted,
13427 char *addr_start, char **copy_arg)
13429 struct linespec_sals lsal;
13431 lsal.sals = decode_static_tracepoint_spec (arg);
13433 *copy_arg = savestring (addr_start, *arg - addr_start);
13435 canonical->addr_string = xstrdup (*copy_arg);
13436 lsal.canonical = xstrdup (*copy_arg);
13437 VEC_safe_push (linespec_sals, canonical->sals, &lsal);
13441 strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch,
13442 struct linespec_result *canonical,
13443 struct linespec_sals *lsal,
13445 char *extra_string,
13446 enum bptype type_wanted,
13447 enum bpdisp disposition,
13449 int task, int ignore_count,
13450 const struct breakpoint_ops *ops,
13451 int from_tty, int enabled,
13452 int internal, unsigned flags)
13456 /* If the user is creating a static tracepoint by marker id
13457 (strace -m MARKER_ID), then store the sals index, so that
13458 breakpoint_re_set can try to match up which of the newly
13459 found markers corresponds to this one, and, don't try to
13460 expand multiple locations for each sal, given than SALS
13461 already should contain all sals for MARKER_ID. */
13463 for (i = 0; i < lsal->sals.nelts; ++i)
13465 struct symtabs_and_lines expanded;
13466 struct tracepoint *tp;
13467 struct cleanup *old_chain;
13470 expanded.nelts = 1;
13471 expanded.sals = &lsal->sals.sals[i];
13473 addr_string = xstrdup (canonical->addr_string);
13474 old_chain = make_cleanup (xfree, addr_string);
13476 tp = XCNEW (struct tracepoint);
13477 init_breakpoint_sal (&tp->base, gdbarch, expanded,
13479 cond_string, extra_string,
13480 type_wanted, disposition,
13481 thread, task, ignore_count, ops,
13482 from_tty, enabled, internal, flags,
13483 canonical->special_display);
13484 /* Given that its possible to have multiple markers with
13485 the same string id, if the user is creating a static
13486 tracepoint by marker id ("strace -m MARKER_ID"), then
13487 store the sals index, so that breakpoint_re_set can
13488 try to match up which of the newly found markers
13489 corresponds to this one */
13490 tp->static_trace_marker_id_idx = i;
13492 install_breakpoint (internal, &tp->base, 0);
13494 discard_cleanups (old_chain);
13499 strace_marker_decode_linespec (struct breakpoint *b, char **s,
13500 struct symtabs_and_lines *sals)
13502 struct tracepoint *tp = (struct tracepoint *) b;
13504 *sals = decode_static_tracepoint_spec (s);
13505 if (sals->nelts > tp->static_trace_marker_id_idx)
13507 sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx];
13511 error (_("marker %s not found"), tp->static_trace_marker_id);
13514 static struct breakpoint_ops strace_marker_breakpoint_ops;
13517 strace_marker_p (struct breakpoint *b)
13519 return b->ops == &strace_marker_breakpoint_ops;
13522 /* Delete a breakpoint and clean up all traces of it in the data
13526 delete_breakpoint (struct breakpoint *bpt)
13528 struct breakpoint *b;
13530 gdb_assert (bpt != NULL);
13532 /* Has this bp already been deleted? This can happen because
13533 multiple lists can hold pointers to bp's. bpstat lists are
13536 One example of this happening is a watchpoint's scope bp. When
13537 the scope bp triggers, we notice that the watchpoint is out of
13538 scope, and delete it. We also delete its scope bp. But the
13539 scope bp is marked "auto-deleting", and is already on a bpstat.
13540 That bpstat is then checked for auto-deleting bp's, which are
13543 A real solution to this problem might involve reference counts in
13544 bp's, and/or giving them pointers back to their referencing
13545 bpstat's, and teaching delete_breakpoint to only free a bp's
13546 storage when no more references were extent. A cheaper bandaid
13548 if (bpt->type == bp_none)
13551 /* At least avoid this stale reference until the reference counting
13552 of breakpoints gets resolved. */
13553 if (bpt->related_breakpoint != bpt)
13555 struct breakpoint *related;
13556 struct watchpoint *w;
13558 if (bpt->type == bp_watchpoint_scope)
13559 w = (struct watchpoint *) bpt->related_breakpoint;
13560 else if (bpt->related_breakpoint->type == bp_watchpoint_scope)
13561 w = (struct watchpoint *) bpt;
13565 watchpoint_del_at_next_stop (w);
13567 /* Unlink bpt from the bpt->related_breakpoint ring. */
13568 for (related = bpt; related->related_breakpoint != bpt;
13569 related = related->related_breakpoint);
13570 related->related_breakpoint = bpt->related_breakpoint;
13571 bpt->related_breakpoint = bpt;
13574 /* watch_command_1 creates a watchpoint but only sets its number if
13575 update_watchpoint succeeds in creating its bp_locations. If there's
13576 a problem in that process, we'll be asked to delete the half-created
13577 watchpoint. In that case, don't announce the deletion. */
13579 observer_notify_breakpoint_deleted (bpt);
13581 if (breakpoint_chain == bpt)
13582 breakpoint_chain = bpt->next;
13584 ALL_BREAKPOINTS (b)
13585 if (b->next == bpt)
13587 b->next = bpt->next;
13591 /* Be sure no bpstat's are pointing at the breakpoint after it's
13593 /* FIXME, how can we find all bpstat's? We just check stop_bpstat
13594 in all threads for now. Note that we cannot just remove bpstats
13595 pointing at bpt from the stop_bpstat list entirely, as breakpoint
13596 commands are associated with the bpstat; if we remove it here,
13597 then the later call to bpstat_do_actions (&stop_bpstat); in
13598 event-top.c won't do anything, and temporary breakpoints with
13599 commands won't work. */
13601 iterate_over_threads (bpstat_remove_breakpoint_callback, bpt);
13603 /* Now that breakpoint is removed from breakpoint list, update the
13604 global location list. This will remove locations that used to
13605 belong to this breakpoint. Do this before freeing the breakpoint
13606 itself, since remove_breakpoint looks at location's owner. It
13607 might be better design to have location completely
13608 self-contained, but it's not the case now. */
13609 update_global_location_list (0);
13611 bpt->ops->dtor (bpt);
13612 /* On the chance that someone will soon try again to delete this
13613 same bp, we mark it as deleted before freeing its storage. */
13614 bpt->type = bp_none;
13619 do_delete_breakpoint_cleanup (void *b)
13621 delete_breakpoint (b);
13625 make_cleanup_delete_breakpoint (struct breakpoint *b)
13627 return make_cleanup (do_delete_breakpoint_cleanup, b);
13630 /* Iterator function to call a user-provided callback function once
13631 for each of B and its related breakpoints. */
13634 iterate_over_related_breakpoints (struct breakpoint *b,
13635 void (*function) (struct breakpoint *,
13639 struct breakpoint *related;
13644 struct breakpoint *next;
13646 /* FUNCTION may delete RELATED. */
13647 next = related->related_breakpoint;
13649 if (next == related)
13651 /* RELATED is the last ring entry. */
13652 function (related, data);
13654 /* FUNCTION may have deleted it, so we'd never reach back to
13655 B. There's nothing left to do anyway, so just break
13660 function (related, data);
13664 while (related != b);
13668 do_delete_breakpoint (struct breakpoint *b, void *ignore)
13670 delete_breakpoint (b);
13673 /* A callback for map_breakpoint_numbers that calls
13674 delete_breakpoint. */
13677 do_map_delete_breakpoint (struct breakpoint *b, void *ignore)
13679 iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL);
13683 delete_command (char *arg, int from_tty)
13685 struct breakpoint *b, *b_tmp;
13691 int breaks_to_delete = 0;
13693 /* Delete all breakpoints if no argument. Do not delete
13694 internal breakpoints, these have to be deleted with an
13695 explicit breakpoint number argument. */
13696 ALL_BREAKPOINTS (b)
13697 if (user_breakpoint_p (b))
13699 breaks_to_delete = 1;
13703 /* Ask user only if there are some breakpoints to delete. */
13705 || (breaks_to_delete && query (_("Delete all breakpoints? "))))
13707 ALL_BREAKPOINTS_SAFE (b, b_tmp)
13708 if (user_breakpoint_p (b))
13709 delete_breakpoint (b);
13713 map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
13717 all_locations_are_pending (struct bp_location *loc)
13719 for (; loc; loc = loc->next)
13720 if (!loc->shlib_disabled
13721 && !loc->pspace->executing_startup)
13726 /* Subroutine of update_breakpoint_locations to simplify it.
13727 Return non-zero if multiple fns in list LOC have the same name.
13728 Null names are ignored. */
13731 ambiguous_names_p (struct bp_location *loc)
13733 struct bp_location *l;
13734 htab_t htab = htab_create_alloc (13, htab_hash_string,
13735 (int (*) (const void *,
13736 const void *)) streq,
13737 NULL, xcalloc, xfree);
13739 for (l = loc; l != NULL; l = l->next)
13742 const char *name = l->function_name;
13744 /* Allow for some names to be NULL, ignore them. */
13748 slot = (const char **) htab_find_slot (htab, (const void *) name,
13750 /* NOTE: We can assume slot != NULL here because xcalloc never
13754 htab_delete (htab);
13760 htab_delete (htab);
13764 /* When symbols change, it probably means the sources changed as well,
13765 and it might mean the static tracepoint markers are no longer at
13766 the same address or line numbers they used to be at last we
13767 checked. Losing your static tracepoints whenever you rebuild is
13768 undesirable. This function tries to resync/rematch gdb static
13769 tracepoints with the markers on the target, for static tracepoints
13770 that have not been set by marker id. Static tracepoint that have
13771 been set by marker id are reset by marker id in breakpoint_re_set.
13774 1) For a tracepoint set at a specific address, look for a marker at
13775 the old PC. If one is found there, assume to be the same marker.
13776 If the name / string id of the marker found is different from the
13777 previous known name, assume that means the user renamed the marker
13778 in the sources, and output a warning.
13780 2) For a tracepoint set at a given line number, look for a marker
13781 at the new address of the old line number. If one is found there,
13782 assume to be the same marker. If the name / string id of the
13783 marker found is different from the previous known name, assume that
13784 means the user renamed the marker in the sources, and output a
13787 3) If a marker is no longer found at the same address or line, it
13788 may mean the marker no longer exists. But it may also just mean
13789 the code changed a bit. Maybe the user added a few lines of code
13790 that made the marker move up or down (in line number terms). Ask
13791 the target for info about the marker with the string id as we knew
13792 it. If found, update line number and address in the matching
13793 static tracepoint. This will get confused if there's more than one
13794 marker with the same ID (possible in UST, although unadvised
13795 precisely because it confuses tools). */
13797 static struct symtab_and_line
13798 update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal)
13800 struct tracepoint *tp = (struct tracepoint *) b;
13801 struct static_tracepoint_marker marker;
13806 find_line_pc (sal.symtab, sal.line, &pc);
13808 if (target_static_tracepoint_marker_at (pc, &marker))
13810 if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0)
13811 warning (_("static tracepoint %d changed probed marker from %s to %s"),
13813 tp->static_trace_marker_id, marker.str_id);
13815 xfree (tp->static_trace_marker_id);
13816 tp->static_trace_marker_id = xstrdup (marker.str_id);
13817 release_static_tracepoint_marker (&marker);
13822 /* Old marker wasn't found on target at lineno. Try looking it up
13824 if (!sal.explicit_pc
13826 && sal.symtab != NULL
13827 && tp->static_trace_marker_id != NULL)
13829 VEC(static_tracepoint_marker_p) *markers;
13832 = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id);
13834 if (!VEC_empty(static_tracepoint_marker_p, markers))
13836 struct symtab_and_line sal2;
13837 struct symbol *sym;
13838 struct static_tracepoint_marker *tpmarker;
13839 struct ui_out *uiout = current_uiout;
13841 tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0);
13843 xfree (tp->static_trace_marker_id);
13844 tp->static_trace_marker_id = xstrdup (tpmarker->str_id);
13846 warning (_("marker for static tracepoint %d (%s) not "
13847 "found at previous line number"),
13848 b->number, tp->static_trace_marker_id);
13852 sal2.pc = tpmarker->address;
13854 sal2 = find_pc_line (tpmarker->address, 0);
13855 sym = find_pc_sect_function (tpmarker->address, NULL);
13856 ui_out_text (uiout, "Now in ");
13859 ui_out_field_string (uiout, "func",
13860 SYMBOL_PRINT_NAME (sym));
13861 ui_out_text (uiout, " at ");
13863 ui_out_field_string (uiout, "file", sal2.symtab->filename);
13864 ui_out_text (uiout, ":");
13866 if (ui_out_is_mi_like_p (uiout))
13868 const char *fullname = symtab_to_fullname (sal2.symtab);
13870 ui_out_field_string (uiout, "fullname", fullname);
13873 ui_out_field_int (uiout, "line", sal2.line);
13874 ui_out_text (uiout, "\n");
13876 b->loc->line_number = sal2.line;
13878 xfree (b->loc->source_file);
13880 b->loc->source_file = xstrdup (sal2.symtab->filename);
13882 b->loc->source_file = NULL;
13884 xfree (b->addr_string);
13885 b->addr_string = xstrprintf ("%s:%d",
13886 sal2.symtab->filename,
13887 b->loc->line_number);
13889 /* Might be nice to check if function changed, and warn if
13892 release_static_tracepoint_marker (tpmarker);
13898 /* Returns 1 iff locations A and B are sufficiently same that
13899 we don't need to report breakpoint as changed. */
13902 locations_are_equal (struct bp_location *a, struct bp_location *b)
13906 if (a->address != b->address)
13909 if (a->shlib_disabled != b->shlib_disabled)
13912 if (a->enabled != b->enabled)
13919 if ((a == NULL) != (b == NULL))
13925 /* Create new breakpoint locations for B (a hardware or software breakpoint)
13926 based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is
13927 a ranged breakpoint. */
13930 update_breakpoint_locations (struct breakpoint *b,
13931 struct symtabs_and_lines sals,
13932 struct symtabs_and_lines sals_end)
13935 struct bp_location *existing_locations = b->loc;
13937 if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1))
13939 /* Ranged breakpoints have only one start location and one end
13941 b->enable_state = bp_disabled;
13942 update_global_location_list (1);
13943 printf_unfiltered (_("Could not reset ranged breakpoint %d: "
13944 "multiple locations found\n"),
13949 /* If there's no new locations, and all existing locations are
13950 pending, don't do anything. This optimizes the common case where
13951 all locations are in the same shared library, that was unloaded.
13952 We'd like to retain the location, so that when the library is
13953 loaded again, we don't loose the enabled/disabled status of the
13954 individual locations. */
13955 if (all_locations_are_pending (existing_locations) && sals.nelts == 0)
13960 for (i = 0; i < sals.nelts; ++i)
13962 struct bp_location *new_loc;
13964 switch_to_program_space_and_thread (sals.sals[i].pspace);
13966 new_loc = add_location_to_breakpoint (b, &(sals.sals[i]));
13968 /* Reparse conditions, they might contain references to the
13970 if (b->cond_string != NULL)
13973 volatile struct gdb_exception e;
13975 s = b->cond_string;
13976 TRY_CATCH (e, RETURN_MASK_ERROR)
13978 new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc,
13979 block_for_pc (sals.sals[i].pc),
13984 warning (_("failed to reevaluate condition "
13985 "for breakpoint %d: %s"),
13986 b->number, e.message);
13987 new_loc->enabled = 0;
13991 if (sals_end.nelts)
13993 CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]);
13995 new_loc->length = end - sals.sals[0].pc + 1;
13999 /* Update locations of permanent breakpoints. */
14000 if (b->enable_state == bp_permanent)
14001 make_breakpoint_permanent (b);
14003 /* If possible, carry over 'disable' status from existing
14006 struct bp_location *e = existing_locations;
14007 /* If there are multiple breakpoints with the same function name,
14008 e.g. for inline functions, comparing function names won't work.
14009 Instead compare pc addresses; this is just a heuristic as things
14010 may have moved, but in practice it gives the correct answer
14011 often enough until a better solution is found. */
14012 int have_ambiguous_names = ambiguous_names_p (b->loc);
14014 for (; e; e = e->next)
14016 if (!e->enabled && e->function_name)
14018 struct bp_location *l = b->loc;
14019 if (have_ambiguous_names)
14021 for (; l; l = l->next)
14022 if (breakpoint_locations_match (e, l))
14030 for (; l; l = l->next)
14031 if (l->function_name
14032 && strcmp (e->function_name, l->function_name) == 0)
14042 if (!locations_are_equal (existing_locations, b->loc))
14043 observer_notify_breakpoint_modified (b);
14045 update_global_location_list (1);
14048 /* Find the SaL locations corresponding to the given ADDR_STRING.
14049 On return, FOUND will be 1 if any SaL was found, zero otherwise. */
14051 static struct symtabs_and_lines
14052 addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found)
14055 struct symtabs_and_lines sals = {0};
14056 volatile struct gdb_exception e;
14058 gdb_assert (b->ops != NULL);
14061 TRY_CATCH (e, RETURN_MASK_ERROR)
14063 b->ops->decode_linespec (b, &s, &sals);
14067 int not_found_and_ok = 0;
14068 /* For pending breakpoints, it's expected that parsing will
14069 fail until the right shared library is loaded. User has
14070 already told to create pending breakpoints and don't need
14071 extra messages. If breakpoint is in bp_shlib_disabled
14072 state, then user already saw the message about that
14073 breakpoint being disabled, and don't want to see more
14075 if (e.error == NOT_FOUND_ERROR
14076 && (b->condition_not_parsed
14077 || (b->loc && b->loc->shlib_disabled)
14078 || (b->loc && b->loc->pspace->executing_startup)
14079 || b->enable_state == bp_disabled))
14080 not_found_and_ok = 1;
14082 if (!not_found_and_ok)
14084 /* We surely don't want to warn about the same breakpoint
14085 10 times. One solution, implemented here, is disable
14086 the breakpoint on error. Another solution would be to
14087 have separate 'warning emitted' flag. Since this
14088 happens only when a binary has changed, I don't know
14089 which approach is better. */
14090 b->enable_state = bp_disabled;
14091 throw_exception (e);
14095 if (e.reason == 0 || e.error != NOT_FOUND_ERROR)
14099 for (i = 0; i < sals.nelts; ++i)
14100 resolve_sal_pc (&sals.sals[i]);
14101 if (b->condition_not_parsed && s && s[0])
14103 char *cond_string, *extra_string;
14106 find_condition_and_thread (s, sals.sals[0].pc,
14107 &cond_string, &thread, &task,
14110 b->cond_string = cond_string;
14111 b->thread = thread;
14114 b->extra_string = extra_string;
14115 b->condition_not_parsed = 0;
14118 if (b->type == bp_static_tracepoint && !strace_marker_p (b))
14119 sals.sals[0] = update_static_tracepoint (b, sals.sals[0]);
14129 /* The default re_set method, for typical hardware or software
14130 breakpoints. Reevaluate the breakpoint and recreate its
14134 breakpoint_re_set_default (struct breakpoint *b)
14137 struct symtabs_and_lines sals, sals_end;
14138 struct symtabs_and_lines expanded = {0};
14139 struct symtabs_and_lines expanded_end = {0};
14141 sals = addr_string_to_sals (b, b->addr_string, &found);
14144 make_cleanup (xfree, sals.sals);
14148 if (b->addr_string_range_end)
14150 sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found);
14153 make_cleanup (xfree, sals_end.sals);
14154 expanded_end = sals_end;
14158 update_breakpoint_locations (b, expanded, expanded_end);
14161 /* Default method for creating SALs from an address string. It basically
14162 calls parse_breakpoint_sals. Return 1 for success, zero for failure. */
14165 create_sals_from_address_default (char **arg,
14166 struct linespec_result *canonical,
14167 enum bptype type_wanted,
14168 char *addr_start, char **copy_arg)
14170 parse_breakpoint_sals (arg, canonical);
14173 /* Call create_breakpoints_sal for the given arguments. This is the default
14174 function for the `create_breakpoints_sal' method of
14178 create_breakpoints_sal_default (struct gdbarch *gdbarch,
14179 struct linespec_result *canonical,
14180 struct linespec_sals *lsal,
14182 char *extra_string,
14183 enum bptype type_wanted,
14184 enum bpdisp disposition,
14186 int task, int ignore_count,
14187 const struct breakpoint_ops *ops,
14188 int from_tty, int enabled,
14189 int internal, unsigned flags)
14191 create_breakpoints_sal (gdbarch, canonical, cond_string,
14193 type_wanted, disposition,
14194 thread, task, ignore_count, ops, from_tty,
14195 enabled, internal, flags);
14198 /* Decode the line represented by S by calling decode_line_full. This is the
14199 default function for the `decode_linespec' method of breakpoint_ops. */
14202 decode_linespec_default (struct breakpoint *b, char **s,
14203 struct symtabs_and_lines *sals)
14205 struct linespec_result canonical;
14207 init_linespec_result (&canonical);
14208 decode_line_full (s, DECODE_LINE_FUNFIRSTLINE,
14209 (struct symtab *) NULL, 0,
14210 &canonical, multiple_symbols_all,
14213 /* We should get 0 or 1 resulting SALs. */
14214 gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2);
14216 if (VEC_length (linespec_sals, canonical.sals) > 0)
14218 struct linespec_sals *lsal;
14220 lsal = VEC_index (linespec_sals, canonical.sals, 0);
14221 *sals = lsal->sals;
14222 /* Arrange it so the destructor does not free the
14224 lsal->sals.sals = NULL;
14227 destroy_linespec_result (&canonical);
14230 /* Prepare the global context for a re-set of breakpoint B. */
14232 static struct cleanup *
14233 prepare_re_set_context (struct breakpoint *b)
14235 struct cleanup *cleanups;
14237 input_radix = b->input_radix;
14238 cleanups = save_current_space_and_thread ();
14239 if (b->pspace != NULL)
14240 switch_to_program_space_and_thread (b->pspace);
14241 set_language (b->language);
14246 /* Reset a breakpoint given it's struct breakpoint * BINT.
14247 The value we return ends up being the return value from catch_errors.
14248 Unused in this case. */
14251 breakpoint_re_set_one (void *bint)
14253 /* Get past catch_errs. */
14254 struct breakpoint *b = (struct breakpoint *) bint;
14255 struct cleanup *cleanups;
14257 cleanups = prepare_re_set_context (b);
14258 b->ops->re_set (b);
14259 do_cleanups (cleanups);
14263 /* Re-set all breakpoints after symbols have been re-loaded. */
14265 breakpoint_re_set (void)
14267 struct breakpoint *b, *b_tmp;
14268 enum language save_language;
14269 int save_input_radix;
14270 struct cleanup *old_chain;
14272 save_language = current_language->la_language;
14273 save_input_radix = input_radix;
14274 old_chain = save_current_program_space ();
14276 ALL_BREAKPOINTS_SAFE (b, b_tmp)
14278 /* Format possible error msg. */
14279 char *message = xstrprintf ("Error in re-setting breakpoint %d: ",
14281 struct cleanup *cleanups = make_cleanup (xfree, message);
14282 catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
14283 do_cleanups (cleanups);
14285 set_language (save_language);
14286 input_radix = save_input_radix;
14288 jit_breakpoint_re_set ();
14290 do_cleanups (old_chain);
14292 create_overlay_event_breakpoint ();
14293 create_longjmp_master_breakpoint ();
14294 create_std_terminate_master_breakpoint ();
14295 create_exception_master_breakpoint ();
14298 /* Reset the thread number of this breakpoint:
14300 - If the breakpoint is for all threads, leave it as-is.
14301 - Else, reset it to the current thread for inferior_ptid. */
14303 breakpoint_re_set_thread (struct breakpoint *b)
14305 if (b->thread != -1)
14307 if (in_thread_list (inferior_ptid))
14308 b->thread = pid_to_thread_id (inferior_ptid);
14310 /* We're being called after following a fork. The new fork is
14311 selected as current, and unless this was a vfork will have a
14312 different program space from the original thread. Reset that
14314 b->loc->pspace = current_program_space;
14318 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
14319 If from_tty is nonzero, it prints a message to that effect,
14320 which ends with a period (no newline). */
14323 set_ignore_count (int bptnum, int count, int from_tty)
14325 struct breakpoint *b;
14330 ALL_BREAKPOINTS (b)
14331 if (b->number == bptnum)
14333 if (is_tracepoint (b))
14335 if (from_tty && count != 0)
14336 printf_filtered (_("Ignore count ignored for tracepoint %d."),
14341 b->ignore_count = count;
14345 printf_filtered (_("Will stop next time "
14346 "breakpoint %d is reached."),
14348 else if (count == 1)
14349 printf_filtered (_("Will ignore next crossing of breakpoint %d."),
14352 printf_filtered (_("Will ignore next %d "
14353 "crossings of breakpoint %d."),
14356 annotate_breakpoints_changed ();
14357 observer_notify_breakpoint_modified (b);
14361 error (_("No breakpoint number %d."), bptnum);
14364 /* Command to set ignore-count of breakpoint N to COUNT. */
14367 ignore_command (char *args, int from_tty)
14373 error_no_arg (_("a breakpoint number"));
14375 num = get_number (&p);
14377 error (_("bad breakpoint number: '%s'"), args);
14379 error (_("Second argument (specified ignore-count) is missing."));
14381 set_ignore_count (num,
14382 longest_to_int (value_as_long (parse_and_eval (p))),
14385 printf_filtered ("\n");
14388 /* Call FUNCTION on each of the breakpoints
14389 whose numbers are given in ARGS. */
14392 map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *,
14397 struct breakpoint *b, *tmp;
14399 struct get_number_or_range_state state;
14402 error_no_arg (_("one or more breakpoint numbers"));
14404 init_number_or_range (&state, args);
14406 while (!state.finished)
14408 char *p = state.string;
14412 num = get_number_or_range (&state);
14415 warning (_("bad breakpoint number at or near '%s'"), p);
14419 ALL_BREAKPOINTS_SAFE (b, tmp)
14420 if (b->number == num)
14423 function (b, data);
14427 printf_unfiltered (_("No breakpoint number %d.\n"), num);
14432 static struct bp_location *
14433 find_location_by_number (char *number)
14435 char *dot = strchr (number, '.');
14439 struct breakpoint *b;
14440 struct bp_location *loc;
14445 bp_num = get_number (&p1);
14447 error (_("Bad breakpoint number '%s'"), number);
14449 ALL_BREAKPOINTS (b)
14450 if (b->number == bp_num)
14455 if (!b || b->number != bp_num)
14456 error (_("Bad breakpoint number '%s'"), number);
14459 loc_num = get_number (&p1);
14461 error (_("Bad breakpoint location number '%s'"), number);
14465 for (;loc_num && loc; --loc_num, loc = loc->next)
14468 error (_("Bad breakpoint location number '%s'"), dot+1);
14474 /* Set ignore-count of breakpoint number BPTNUM to COUNT.
14475 If from_tty is nonzero, it prints a message to that effect,
14476 which ends with a period (no newline). */
14479 disable_breakpoint (struct breakpoint *bpt)
14481 /* Never disable a watchpoint scope breakpoint; we want to
14482 hit them when we leave scope so we can delete both the
14483 watchpoint and its scope breakpoint at that time. */
14484 if (bpt->type == bp_watchpoint_scope)
14487 /* You can't disable permanent breakpoints. */
14488 if (bpt->enable_state == bp_permanent)
14491 bpt->enable_state = bp_disabled;
14493 /* Mark breakpoint locations modified. */
14494 mark_breakpoint_modified (bpt);
14496 if (target_supports_enable_disable_tracepoint ()
14497 && current_trace_status ()->running && is_tracepoint (bpt))
14499 struct bp_location *location;
14501 for (location = bpt->loc; location; location = location->next)
14502 target_disable_tracepoint (location);
14505 update_global_location_list (0);
14507 observer_notify_breakpoint_modified (bpt);
14510 /* A callback for iterate_over_related_breakpoints. */
14513 do_disable_breakpoint (struct breakpoint *b, void *ignore)
14515 disable_breakpoint (b);
14518 /* A callback for map_breakpoint_numbers that calls
14519 disable_breakpoint. */
14522 do_map_disable_breakpoint (struct breakpoint *b, void *ignore)
14524 iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL);
14528 disable_command (char *args, int from_tty)
14532 struct breakpoint *bpt;
14534 ALL_BREAKPOINTS (bpt)
14535 if (user_breakpoint_p (bpt))
14536 disable_breakpoint (bpt);
14538 else if (strchr (args, '.'))
14540 struct bp_location *loc = find_location_by_number (args);
14546 mark_breakpoint_location_modified (loc);
14548 if (target_supports_enable_disable_tracepoint ()
14549 && current_trace_status ()->running && loc->owner
14550 && is_tracepoint (loc->owner))
14551 target_disable_tracepoint (loc);
14553 update_global_location_list (0);
14556 map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL);
14560 enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition,
14563 int target_resources_ok;
14565 if (bpt->type == bp_hardware_breakpoint)
14568 i = hw_breakpoint_used_count ();
14569 target_resources_ok =
14570 target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
14572 if (target_resources_ok == 0)
14573 error (_("No hardware breakpoint support in the target."));
14574 else if (target_resources_ok < 0)
14575 error (_("Hardware breakpoints used exceeds limit."));
14578 if (is_watchpoint (bpt))
14580 /* Initialize it just to avoid a GCC false warning. */
14581 enum enable_state orig_enable_state = 0;
14582 volatile struct gdb_exception e;
14584 TRY_CATCH (e, RETURN_MASK_ALL)
14586 struct watchpoint *w = (struct watchpoint *) bpt;
14588 orig_enable_state = bpt->enable_state;
14589 bpt->enable_state = bp_enabled;
14590 update_watchpoint (w, 1 /* reparse */);
14594 bpt->enable_state = orig_enable_state;
14595 exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "),
14601 if (bpt->enable_state != bp_permanent)
14602 bpt->enable_state = bp_enabled;
14604 bpt->enable_state = bp_enabled;
14606 /* Mark breakpoint locations modified. */
14607 mark_breakpoint_modified (bpt);
14609 if (target_supports_enable_disable_tracepoint ()
14610 && current_trace_status ()->running && is_tracepoint (bpt))
14612 struct bp_location *location;
14614 for (location = bpt->loc; location; location = location->next)
14615 target_enable_tracepoint (location);
14618 bpt->disposition = disposition;
14619 bpt->enable_count = count;
14620 update_global_location_list (1);
14621 annotate_breakpoints_changed ();
14623 observer_notify_breakpoint_modified (bpt);
14628 enable_breakpoint (struct breakpoint *bpt)
14630 enable_breakpoint_disp (bpt, bpt->disposition, 0);
14634 do_enable_breakpoint (struct breakpoint *bpt, void *arg)
14636 enable_breakpoint (bpt);
14639 /* A callback for map_breakpoint_numbers that calls
14640 enable_breakpoint. */
14643 do_map_enable_breakpoint (struct breakpoint *b, void *ignore)
14645 iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL);
14648 /* The enable command enables the specified breakpoints (or all defined
14649 breakpoints) so they once again become (or continue to be) effective
14650 in stopping the inferior. */
14653 enable_command (char *args, int from_tty)
14657 struct breakpoint *bpt;
14659 ALL_BREAKPOINTS (bpt)
14660 if (user_breakpoint_p (bpt))
14661 enable_breakpoint (bpt);
14663 else if (strchr (args, '.'))
14665 struct bp_location *loc = find_location_by_number (args);
14671 mark_breakpoint_location_modified (loc);
14673 if (target_supports_enable_disable_tracepoint ()
14674 && current_trace_status ()->running && loc->owner
14675 && is_tracepoint (loc->owner))
14676 target_enable_tracepoint (loc);
14678 update_global_location_list (1);
14681 map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL);
14684 /* This struct packages up disposition data for application to multiple
14694 do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg)
14696 struct disp_data disp_data = *(struct disp_data *) arg;
14698 enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count);
14702 do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore)
14704 struct disp_data disp = { disp_disable, 1 };
14706 iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
14710 enable_once_command (char *args, int from_tty)
14712 map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL);
14716 do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr)
14718 struct disp_data disp = { disp_disable, *(int *) countptr };
14720 iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
14724 enable_count_command (char *args, int from_tty)
14726 int count = get_number (&args);
14728 map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count);
14732 do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore)
14734 struct disp_data disp = { disp_del, 1 };
14736 iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
14740 enable_delete_command (char *args, int from_tty)
14742 map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL);
14746 set_breakpoint_cmd (char *args, int from_tty)
14751 show_breakpoint_cmd (char *args, int from_tty)
14755 /* Invalidate last known value of any hardware watchpoint if
14756 the memory which that value represents has been written to by
14760 invalidate_bp_value_on_memory_change (struct inferior *inferior,
14761 CORE_ADDR addr, ssize_t len,
14762 const bfd_byte *data)
14764 struct breakpoint *bp;
14766 ALL_BREAKPOINTS (bp)
14767 if (bp->enable_state == bp_enabled
14768 && bp->type == bp_hardware_watchpoint)
14770 struct watchpoint *wp = (struct watchpoint *) bp;
14772 if (wp->val_valid && wp->val)
14774 struct bp_location *loc;
14776 for (loc = bp->loc; loc != NULL; loc = loc->next)
14777 if (loc->loc_type == bp_loc_hardware_watchpoint
14778 && loc->address + loc->length > addr
14779 && addr + len > loc->address)
14781 value_free (wp->val);
14789 /* Create and insert a raw software breakpoint at PC. Return an
14790 identifier, which should be used to remove the breakpoint later.
14791 In general, places which call this should be using something on the
14792 breakpoint chain instead; this function should be eliminated
14796 deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch,
14797 struct address_space *aspace, CORE_ADDR pc)
14799 struct bp_target_info *bp_tgt;
14801 bp_tgt = XZALLOC (struct bp_target_info);
14803 bp_tgt->placed_address_space = aspace;
14804 bp_tgt->placed_address = pc;
14806 if (target_insert_breakpoint (gdbarch, bp_tgt) != 0)
14808 /* Could not insert the breakpoint. */
14816 /* Remove a breakpoint BP inserted by
14817 deprecated_insert_raw_breakpoint. */
14820 deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp)
14822 struct bp_target_info *bp_tgt = bp;
14825 ret = target_remove_breakpoint (gdbarch, bp_tgt);
14831 /* One (or perhaps two) breakpoints used for software single
14834 static void *single_step_breakpoints[2];
14835 static struct gdbarch *single_step_gdbarch[2];
14837 /* Create and insert a breakpoint for software single step. */
14840 insert_single_step_breakpoint (struct gdbarch *gdbarch,
14841 struct address_space *aspace,
14846 if (single_step_breakpoints[0] == NULL)
14848 bpt_p = &single_step_breakpoints[0];
14849 single_step_gdbarch[0] = gdbarch;
14853 gdb_assert (single_step_breakpoints[1] == NULL);
14854 bpt_p = &single_step_breakpoints[1];
14855 single_step_gdbarch[1] = gdbarch;
14858 /* NOTE drow/2006-04-11: A future improvement to this function would
14859 be to only create the breakpoints once, and actually put them on
14860 the breakpoint chain. That would let us use set_raw_breakpoint.
14861 We could adjust the addresses each time they were needed. Doing
14862 this requires corresponding changes elsewhere where single step
14863 breakpoints are handled, however. So, for now, we use this. */
14865 *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc);
14866 if (*bpt_p == NULL)
14867 error (_("Could not insert single-step breakpoint at %s"),
14868 paddress (gdbarch, next_pc));
14871 /* Check if the breakpoints used for software single stepping
14872 were inserted or not. */
14875 single_step_breakpoints_inserted (void)
14877 return (single_step_breakpoints[0] != NULL
14878 || single_step_breakpoints[1] != NULL);
14881 /* Remove and delete any breakpoints used for software single step. */
14884 remove_single_step_breakpoints (void)
14886 gdb_assert (single_step_breakpoints[0] != NULL);
14888 /* See insert_single_step_breakpoint for more about this deprecated
14890 deprecated_remove_raw_breakpoint (single_step_gdbarch[0],
14891 single_step_breakpoints[0]);
14892 single_step_gdbarch[0] = NULL;
14893 single_step_breakpoints[0] = NULL;
14895 if (single_step_breakpoints[1] != NULL)
14897 deprecated_remove_raw_breakpoint (single_step_gdbarch[1],
14898 single_step_breakpoints[1]);
14899 single_step_gdbarch[1] = NULL;
14900 single_step_breakpoints[1] = NULL;
14904 /* Delete software single step breakpoints without removing them from
14905 the inferior. This is intended to be used if the inferior's address
14906 space where they were inserted is already gone, e.g. after exit or
14910 cancel_single_step_breakpoints (void)
14914 for (i = 0; i < 2; i++)
14915 if (single_step_breakpoints[i])
14917 xfree (single_step_breakpoints[i]);
14918 single_step_breakpoints[i] = NULL;
14919 single_step_gdbarch[i] = NULL;
14923 /* Detach software single-step breakpoints from INFERIOR_PTID without
14927 detach_single_step_breakpoints (void)
14931 for (i = 0; i < 2; i++)
14932 if (single_step_breakpoints[i])
14933 target_remove_breakpoint (single_step_gdbarch[i],
14934 single_step_breakpoints[i]);
14937 /* Check whether a software single-step breakpoint is inserted at
14941 single_step_breakpoint_inserted_here_p (struct address_space *aspace,
14946 for (i = 0; i < 2; i++)
14948 struct bp_target_info *bp_tgt = single_step_breakpoints[i];
14950 && breakpoint_address_match (bp_tgt->placed_address_space,
14951 bp_tgt->placed_address,
14959 /* Returns 0 if 'bp' is NOT a syscall catchpoint,
14960 non-zero otherwise. */
14962 is_syscall_catchpoint_enabled (struct breakpoint *bp)
14964 if (syscall_catchpoint_p (bp)
14965 && bp->enable_state != bp_disabled
14966 && bp->enable_state != bp_call_disabled)
14973 catch_syscall_enabled (void)
14975 struct catch_syscall_inferior_data *inf_data
14976 = get_catch_syscall_inferior_data (current_inferior ());
14978 return inf_data->total_syscalls_count != 0;
14982 catching_syscall_number (int syscall_number)
14984 struct breakpoint *bp;
14986 ALL_BREAKPOINTS (bp)
14987 if (is_syscall_catchpoint_enabled (bp))
14989 struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp;
14991 if (c->syscalls_to_be_caught)
14995 VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
14997 if (syscall_number == iter)
15007 /* Complete syscall names. Used by "catch syscall". */
15008 static VEC (char_ptr) *
15009 catch_syscall_completer (struct cmd_list_element *cmd,
15010 char *text, char *word)
15012 const char **list = get_syscall_names ();
15013 VEC (char_ptr) *retlist
15014 = (list == NULL) ? NULL : complete_on_enum (list, word, word);
15020 /* Tracepoint-specific operations. */
15022 /* Set tracepoint count to NUM. */
15024 set_tracepoint_count (int num)
15026 tracepoint_count = num;
15027 set_internalvar_integer (lookup_internalvar ("tpnum"), num);
15031 trace_command (char *arg, int from_tty)
15033 struct breakpoint_ops *ops;
15034 const char *arg_cp = arg;
15036 if (arg && probe_linespec_to_ops (&arg_cp))
15037 ops = &tracepoint_probe_breakpoint_ops;
15039 ops = &tracepoint_breakpoint_ops;
15041 create_breakpoint (get_current_arch (),
15043 NULL, 0, NULL, 1 /* parse arg */,
15045 bp_tracepoint /* type_wanted */,
15046 0 /* Ignore count */,
15047 pending_break_support,
15051 0 /* internal */, 0);
15055 ftrace_command (char *arg, int from_tty)
15057 create_breakpoint (get_current_arch (),
15059 NULL, 0, NULL, 1 /* parse arg */,
15061 bp_fast_tracepoint /* type_wanted */,
15062 0 /* Ignore count */,
15063 pending_break_support,
15064 &tracepoint_breakpoint_ops,
15067 0 /* internal */, 0);
15070 /* strace command implementation. Creates a static tracepoint. */
15073 strace_command (char *arg, int from_tty)
15075 struct breakpoint_ops *ops;
15077 /* Decide if we are dealing with a static tracepoint marker (`-m'),
15078 or with a normal static tracepoint. */
15079 if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2]))
15080 ops = &strace_marker_breakpoint_ops;
15082 ops = &tracepoint_breakpoint_ops;
15084 create_breakpoint (get_current_arch (),
15086 NULL, 0, NULL, 1 /* parse arg */,
15088 bp_static_tracepoint /* type_wanted */,
15089 0 /* Ignore count */,
15090 pending_break_support,
15094 0 /* internal */, 0);
15097 /* Set up a fake reader function that gets command lines from a linked
15098 list that was acquired during tracepoint uploading. */
15100 static struct uploaded_tp *this_utp;
15101 static int next_cmd;
15104 read_uploaded_action (void)
15108 VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt);
15115 /* Given information about a tracepoint as recorded on a target (which
15116 can be either a live system or a trace file), attempt to create an
15117 equivalent GDB tracepoint. This is not a reliable process, since
15118 the target does not necessarily have all the information used when
15119 the tracepoint was originally defined. */
15121 struct tracepoint *
15122 create_tracepoint_from_upload (struct uploaded_tp *utp)
15124 char *addr_str, small_buf[100];
15125 struct tracepoint *tp;
15127 if (utp->at_string)
15128 addr_str = utp->at_string;
15131 /* In the absence of a source location, fall back to raw
15132 address. Since there is no way to confirm that the address
15133 means the same thing as when the trace was started, warn the
15135 warning (_("Uploaded tracepoint %d has no "
15136 "source location, using raw address"),
15138 xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr));
15139 addr_str = small_buf;
15142 /* There's not much we can do with a sequence of bytecodes. */
15143 if (utp->cond && !utp->cond_string)
15144 warning (_("Uploaded tracepoint %d condition "
15145 "has no source form, ignoring it"),
15148 if (!create_breakpoint (get_current_arch (),
15150 utp->cond_string, -1, NULL,
15151 0 /* parse cond/thread */,
15153 utp->type /* type_wanted */,
15154 0 /* Ignore count */,
15155 pending_break_support,
15156 &tracepoint_breakpoint_ops,
15158 utp->enabled /* enabled */,
15160 CREATE_BREAKPOINT_FLAGS_INSERTED))
15163 /* Get the tracepoint we just created. */
15164 tp = get_tracepoint (tracepoint_count);
15165 gdb_assert (tp != NULL);
15169 xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass,
15172 trace_pass_command (small_buf, 0);
15175 /* If we have uploaded versions of the original commands, set up a
15176 special-purpose "reader" function and call the usual command line
15177 reader, then pass the result to the breakpoint command-setting
15179 if (!VEC_empty (char_ptr, utp->cmd_strings))
15181 struct command_line *cmd_list;
15186 cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL);
15188 breakpoint_set_commands (&tp->base, cmd_list);
15190 else if (!VEC_empty (char_ptr, utp->actions)
15191 || !VEC_empty (char_ptr, utp->step_actions))
15192 warning (_("Uploaded tracepoint %d actions "
15193 "have no source form, ignoring them"),
15196 /* Copy any status information that might be available. */
15197 tp->base.hit_count = utp->hit_count;
15198 tp->traceframe_usage = utp->traceframe_usage;
15203 /* Print information on tracepoint number TPNUM_EXP, or all if
15207 tracepoints_info (char *args, int from_tty)
15209 struct ui_out *uiout = current_uiout;
15212 num_printed = breakpoint_1 (args, 0, is_tracepoint);
15214 if (num_printed == 0)
15216 if (args == NULL || *args == '\0')
15217 ui_out_message (uiout, 0, "No tracepoints.\n");
15219 ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args);
15222 default_collect_info ();
15225 /* The 'enable trace' command enables tracepoints.
15226 Not supported by all targets. */
15228 enable_trace_command (char *args, int from_tty)
15230 enable_command (args, from_tty);
15233 /* The 'disable trace' command disables tracepoints.
15234 Not supported by all targets. */
15236 disable_trace_command (char *args, int from_tty)
15238 disable_command (args, from_tty);
15241 /* Remove a tracepoint (or all if no argument). */
15243 delete_trace_command (char *arg, int from_tty)
15245 struct breakpoint *b, *b_tmp;
15251 int breaks_to_delete = 0;
15253 /* Delete all breakpoints if no argument.
15254 Do not delete internal or call-dummy breakpoints, these
15255 have to be deleted with an explicit breakpoint number
15257 ALL_TRACEPOINTS (b)
15258 if (is_tracepoint (b) && user_breakpoint_p (b))
15260 breaks_to_delete = 1;
15264 /* Ask user only if there are some breakpoints to delete. */
15266 || (breaks_to_delete && query (_("Delete all tracepoints? "))))
15268 ALL_BREAKPOINTS_SAFE (b, b_tmp)
15269 if (is_tracepoint (b) && user_breakpoint_p (b))
15270 delete_breakpoint (b);
15274 map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
15277 /* Helper function for trace_pass_command. */
15280 trace_pass_set_count (struct tracepoint *tp, int count, int from_tty)
15282 tp->pass_count = count;
15283 observer_notify_breakpoint_modified (&tp->base);
15285 printf_filtered (_("Setting tracepoint %d's passcount to %d\n"),
15286 tp->base.number, count);
15289 /* Set passcount for tracepoint.
15291 First command argument is passcount, second is tracepoint number.
15292 If tracepoint number omitted, apply to most recently defined.
15293 Also accepts special argument "all". */
15296 trace_pass_command (char *args, int from_tty)
15298 struct tracepoint *t1;
15299 unsigned int count;
15301 if (args == 0 || *args == 0)
15302 error (_("passcount command requires an "
15303 "argument (count + optional TP num)"));
15305 count = strtoul (args, &args, 10); /* Count comes first, then TP num. */
15307 while (*args && isspace ((int) *args))
15310 if (*args && strncasecmp (args, "all", 3) == 0)
15312 struct breakpoint *b;
15314 args += 3; /* Skip special argument "all". */
15316 error (_("Junk at end of arguments."));
15318 ALL_TRACEPOINTS (b)
15320 t1 = (struct tracepoint *) b;
15321 trace_pass_set_count (t1, count, from_tty);
15324 else if (*args == '\0')
15326 t1 = get_tracepoint_by_number (&args, NULL, 1);
15328 trace_pass_set_count (t1, count, from_tty);
15332 struct get_number_or_range_state state;
15334 init_number_or_range (&state, args);
15335 while (!state.finished)
15337 t1 = get_tracepoint_by_number (&args, &state, 1);
15339 trace_pass_set_count (t1, count, from_tty);
15344 struct tracepoint *
15345 get_tracepoint (int num)
15347 struct breakpoint *t;
15349 ALL_TRACEPOINTS (t)
15350 if (t->number == num)
15351 return (struct tracepoint *) t;
15356 /* Find the tracepoint with the given target-side number (which may be
15357 different from the tracepoint number after disconnecting and
15360 struct tracepoint *
15361 get_tracepoint_by_number_on_target (int num)
15363 struct breakpoint *b;
15365 ALL_TRACEPOINTS (b)
15367 struct tracepoint *t = (struct tracepoint *) b;
15369 if (t->number_on_target == num)
15376 /* Utility: parse a tracepoint number and look it up in the list.
15377 If STATE is not NULL, use, get_number_or_range_state and ignore ARG.
15378 If OPTIONAL_P is true, then if the argument is missing, the most
15379 recent tracepoint (tracepoint_count) is returned. */
15380 struct tracepoint *
15381 get_tracepoint_by_number (char **arg,
15382 struct get_number_or_range_state *state,
15385 struct breakpoint *t;
15387 char *instring = arg == NULL ? NULL : *arg;
15391 gdb_assert (!state->finished);
15392 tpnum = get_number_or_range (state);
15394 else if (arg == NULL || *arg == NULL || ! **arg)
15397 tpnum = tracepoint_count;
15399 error_no_arg (_("tracepoint number"));
15402 tpnum = get_number (arg);
15406 if (instring && *instring)
15407 printf_filtered (_("bad tracepoint number at or near '%s'\n"),
15410 printf_filtered (_("Tracepoint argument missing "
15411 "and no previous tracepoint\n"));
15415 ALL_TRACEPOINTS (t)
15416 if (t->number == tpnum)
15418 return (struct tracepoint *) t;
15421 printf_unfiltered ("No tracepoint number %d.\n", tpnum);
15426 print_recreate_thread (struct breakpoint *b, struct ui_file *fp)
15428 if (b->thread != -1)
15429 fprintf_unfiltered (fp, " thread %d", b->thread);
15432 fprintf_unfiltered (fp, " task %d", b->task);
15434 fprintf_unfiltered (fp, "\n");
15437 /* Save information on user settable breakpoints (watchpoints, etc) to
15438 a new script file named FILENAME. If FILTER is non-NULL, call it
15439 on each breakpoint and only include the ones for which it returns
15443 save_breakpoints (char *filename, int from_tty,
15444 int (*filter) (const struct breakpoint *))
15446 struct breakpoint *tp;
15449 struct cleanup *cleanup;
15450 struct ui_file *fp;
15451 int extra_trace_bits = 0;
15453 if (filename == 0 || *filename == 0)
15454 error (_("Argument required (file name in which to save)"));
15456 /* See if we have anything to save. */
15457 ALL_BREAKPOINTS (tp)
15459 /* Skip internal and momentary breakpoints. */
15460 if (!user_breakpoint_p (tp))
15463 /* If we have a filter, only save the breakpoints it accepts. */
15464 if (filter && !filter (tp))
15469 if (is_tracepoint (tp))
15471 extra_trace_bits = 1;
15473 /* We can stop searching. */
15480 warning (_("Nothing to save."));
15484 pathname = tilde_expand (filename);
15485 cleanup = make_cleanup (xfree, pathname);
15486 fp = gdb_fopen (pathname, "w");
15488 error (_("Unable to open file '%s' for saving (%s)"),
15489 filename, safe_strerror (errno));
15490 make_cleanup_ui_file_delete (fp);
15492 if (extra_trace_bits)
15493 save_trace_state_variables (fp);
15495 ALL_BREAKPOINTS (tp)
15497 /* Skip internal and momentary breakpoints. */
15498 if (!user_breakpoint_p (tp))
15501 /* If we have a filter, only save the breakpoints it accepts. */
15502 if (filter && !filter (tp))
15505 tp->ops->print_recreate (tp, fp);
15507 /* Note, we can't rely on tp->number for anything, as we can't
15508 assume the recreated breakpoint numbers will match. Use $bpnum
15511 if (tp->cond_string)
15512 fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string);
15514 if (tp->ignore_count)
15515 fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count);
15519 volatile struct gdb_exception ex;
15521 fprintf_unfiltered (fp, " commands\n");
15523 ui_out_redirect (current_uiout, fp);
15524 TRY_CATCH (ex, RETURN_MASK_ALL)
15526 print_command_lines (current_uiout, tp->commands->commands, 2);
15528 ui_out_redirect (current_uiout, NULL);
15531 throw_exception (ex);
15533 fprintf_unfiltered (fp, " end\n");
15536 if (tp->enable_state == bp_disabled)
15537 fprintf_unfiltered (fp, "disable\n");
15539 /* If this is a multi-location breakpoint, check if the locations
15540 should be individually disabled. Watchpoint locations are
15541 special, and not user visible. */
15542 if (!is_watchpoint (tp) && tp->loc && tp->loc->next)
15544 struct bp_location *loc;
15547 for (loc = tp->loc; loc != NULL; loc = loc->next, n++)
15549 fprintf_unfiltered (fp, "disable $bpnum.%d\n", n);
15553 if (extra_trace_bits && *default_collect)
15554 fprintf_unfiltered (fp, "set default-collect %s\n", default_collect);
15556 do_cleanups (cleanup);
15558 printf_filtered (_("Saved to file '%s'.\n"), filename);
15561 /* The `save breakpoints' command. */
15564 save_breakpoints_command (char *args, int from_tty)
15566 save_breakpoints (args, from_tty, NULL);
15569 /* The `save tracepoints' command. */
15572 save_tracepoints_command (char *args, int from_tty)
15574 save_breakpoints (args, from_tty, is_tracepoint);
15577 /* Create a vector of all tracepoints. */
15579 VEC(breakpoint_p) *
15580 all_tracepoints (void)
15582 VEC(breakpoint_p) *tp_vec = 0;
15583 struct breakpoint *tp;
15585 ALL_TRACEPOINTS (tp)
15587 VEC_safe_push (breakpoint_p, tp_vec, tp);
15594 /* This help string is used for the break, hbreak, tbreak and thbreak
15595 commands. It is defined as a macro to prevent duplication.
15596 COMMAND should be a string constant containing the name of the
15598 #define BREAK_ARGS_HELP(command) \
15599 command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\
15600 PROBE_MODIFIER shall be present if the command is to be placed in a\n\
15601 probe point. Accepted values are `-probe' (for a generic, automatically\n\
15602 guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\
15603 LOCATION may be a line number, function name, or \"*\" and an address.\n\
15604 If a line number is specified, break at start of code for that line.\n\
15605 If a function is specified, break at start of code for that function.\n\
15606 If an address is specified, break at that exact address.\n\
15607 With no LOCATION, uses current execution address of the selected\n\
15608 stack frame. This is useful for breaking on return to a stack frame.\n\
15610 THREADNUM is the number from \"info threads\".\n\
15611 CONDITION is a boolean expression.\n\
15613 Multiple breakpoints at one place are permitted, and useful if their\n\
15614 conditions are different.\n\
15616 Do \"help breakpoints\" for info on other commands dealing with breakpoints."
15618 /* List of subcommands for "catch". */
15619 static struct cmd_list_element *catch_cmdlist;
15621 /* List of subcommands for "tcatch". */
15622 static struct cmd_list_element *tcatch_cmdlist;
15625 add_catch_command (char *name, char *docstring,
15626 void (*sfunc) (char *args, int from_tty,
15627 struct cmd_list_element *command),
15628 completer_ftype *completer,
15629 void *user_data_catch,
15630 void *user_data_tcatch)
15632 struct cmd_list_element *command;
15634 command = add_cmd (name, class_breakpoint, NULL, docstring,
15636 set_cmd_sfunc (command, sfunc);
15637 set_cmd_context (command, user_data_catch);
15638 set_cmd_completer (command, completer);
15640 command = add_cmd (name, class_breakpoint, NULL, docstring,
15642 set_cmd_sfunc (command, sfunc);
15643 set_cmd_context (command, user_data_tcatch);
15644 set_cmd_completer (command, completer);
15648 clear_syscall_counts (struct inferior *inf)
15650 struct catch_syscall_inferior_data *inf_data
15651 = get_catch_syscall_inferior_data (inf);
15653 inf_data->total_syscalls_count = 0;
15654 inf_data->any_syscall_count = 0;
15655 VEC_free (int, inf_data->syscalls_counts);
15659 save_command (char *arg, int from_tty)
15661 printf_unfiltered (_("\"save\" must be followed by "
15662 "the name of a save subcommand.\n"));
15663 help_list (save_cmdlist, "save ", -1, gdb_stdout);
15666 struct breakpoint *
15667 iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *),
15670 struct breakpoint *b, *b_tmp;
15672 ALL_BREAKPOINTS_SAFE (b, b_tmp)
15674 if ((*callback) (b, data))
15681 /* Zero if any of the breakpoint's locations could be a location where
15682 functions have been inlined, nonzero otherwise. */
15685 is_non_inline_function (struct breakpoint *b)
15687 /* The shared library event breakpoint is set on the address of a
15688 non-inline function. */
15689 if (b->type == bp_shlib_event)
15695 /* Nonzero if the specified PC cannot be a location where functions
15696 have been inlined. */
15699 pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc,
15700 const struct target_waitstatus *ws)
15702 struct breakpoint *b;
15703 struct bp_location *bl;
15705 ALL_BREAKPOINTS (b)
15707 if (!is_non_inline_function (b))
15710 for (bl = b->loc; bl != NULL; bl = bl->next)
15712 if (!bl->shlib_disabled
15713 && bpstat_check_location (bl, aspace, pc, ws))
15722 initialize_breakpoint_ops (void)
15724 static int initialized = 0;
15726 struct breakpoint_ops *ops;
15732 /* The breakpoint_ops structure to be inherit by all kinds of
15733 breakpoints (real breakpoints, i.e., user "break" breakpoints,
15734 internal and momentary breakpoints, etc.). */
15735 ops = &bkpt_base_breakpoint_ops;
15736 *ops = base_breakpoint_ops;
15737 ops->re_set = bkpt_re_set;
15738 ops->insert_location = bkpt_insert_location;
15739 ops->remove_location = bkpt_remove_location;
15740 ops->breakpoint_hit = bkpt_breakpoint_hit;
15741 ops->create_sals_from_address = bkpt_create_sals_from_address;
15742 ops->create_breakpoints_sal = bkpt_create_breakpoints_sal;
15743 ops->decode_linespec = bkpt_decode_linespec;
15745 /* The breakpoint_ops structure to be used in regular breakpoints. */
15746 ops = &bkpt_breakpoint_ops;
15747 *ops = bkpt_base_breakpoint_ops;
15748 ops->re_set = bkpt_re_set;
15749 ops->resources_needed = bkpt_resources_needed;
15750 ops->print_it = bkpt_print_it;
15751 ops->print_mention = bkpt_print_mention;
15752 ops->print_recreate = bkpt_print_recreate;
15754 /* Ranged breakpoints. */
15755 ops = &ranged_breakpoint_ops;
15756 *ops = bkpt_breakpoint_ops;
15757 ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint;
15758 ops->resources_needed = resources_needed_ranged_breakpoint;
15759 ops->print_it = print_it_ranged_breakpoint;
15760 ops->print_one = print_one_ranged_breakpoint;
15761 ops->print_one_detail = print_one_detail_ranged_breakpoint;
15762 ops->print_mention = print_mention_ranged_breakpoint;
15763 ops->print_recreate = print_recreate_ranged_breakpoint;
15765 /* Internal breakpoints. */
15766 ops = &internal_breakpoint_ops;
15767 *ops = bkpt_base_breakpoint_ops;
15768 ops->re_set = internal_bkpt_re_set;
15769 ops->check_status = internal_bkpt_check_status;
15770 ops->print_it = internal_bkpt_print_it;
15771 ops->print_mention = internal_bkpt_print_mention;
15773 /* Momentary breakpoints. */
15774 ops = &momentary_breakpoint_ops;
15775 *ops = bkpt_base_breakpoint_ops;
15776 ops->re_set = momentary_bkpt_re_set;
15777 ops->check_status = momentary_bkpt_check_status;
15778 ops->print_it = momentary_bkpt_print_it;
15779 ops->print_mention = momentary_bkpt_print_mention;
15781 /* Momentary breakpoints for bp_longjmp and bp_exception. */
15782 ops = &longjmp_breakpoint_ops;
15783 *ops = momentary_breakpoint_ops;
15784 ops->dtor = longjmp_bkpt_dtor;
15786 /* Probe breakpoints. */
15787 ops = &bkpt_probe_breakpoint_ops;
15788 *ops = bkpt_breakpoint_ops;
15789 ops->insert_location = bkpt_probe_insert_location;
15790 ops->remove_location = bkpt_probe_remove_location;
15791 ops->create_sals_from_address = bkpt_probe_create_sals_from_address;
15792 ops->decode_linespec = bkpt_probe_decode_linespec;
15794 /* GNU v3 exception catchpoints. */
15795 ops = &gnu_v3_exception_catchpoint_ops;
15796 *ops = bkpt_breakpoint_ops;
15797 ops->print_it = print_it_exception_catchpoint;
15798 ops->print_one = print_one_exception_catchpoint;
15799 ops->print_mention = print_mention_exception_catchpoint;
15800 ops->print_recreate = print_recreate_exception_catchpoint;
15803 ops = &watchpoint_breakpoint_ops;
15804 *ops = base_breakpoint_ops;
15805 ops->dtor = dtor_watchpoint;
15806 ops->re_set = re_set_watchpoint;
15807 ops->insert_location = insert_watchpoint;
15808 ops->remove_location = remove_watchpoint;
15809 ops->breakpoint_hit = breakpoint_hit_watchpoint;
15810 ops->check_status = check_status_watchpoint;
15811 ops->resources_needed = resources_needed_watchpoint;
15812 ops->works_in_software_mode = works_in_software_mode_watchpoint;
15813 ops->print_it = print_it_watchpoint;
15814 ops->print_mention = print_mention_watchpoint;
15815 ops->print_recreate = print_recreate_watchpoint;
15817 /* Masked watchpoints. */
15818 ops = &masked_watchpoint_breakpoint_ops;
15819 *ops = watchpoint_breakpoint_ops;
15820 ops->insert_location = insert_masked_watchpoint;
15821 ops->remove_location = remove_masked_watchpoint;
15822 ops->resources_needed = resources_needed_masked_watchpoint;
15823 ops->works_in_software_mode = works_in_software_mode_masked_watchpoint;
15824 ops->print_it = print_it_masked_watchpoint;
15825 ops->print_one_detail = print_one_detail_masked_watchpoint;
15826 ops->print_mention = print_mention_masked_watchpoint;
15827 ops->print_recreate = print_recreate_masked_watchpoint;
15830 ops = &tracepoint_breakpoint_ops;
15831 *ops = base_breakpoint_ops;
15832 ops->re_set = tracepoint_re_set;
15833 ops->breakpoint_hit = tracepoint_breakpoint_hit;
15834 ops->print_one_detail = tracepoint_print_one_detail;
15835 ops->print_mention = tracepoint_print_mention;
15836 ops->print_recreate = tracepoint_print_recreate;
15837 ops->create_sals_from_address = tracepoint_create_sals_from_address;
15838 ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal;
15839 ops->decode_linespec = tracepoint_decode_linespec;
15841 /* Probe tracepoints. */
15842 ops = &tracepoint_probe_breakpoint_ops;
15843 *ops = tracepoint_breakpoint_ops;
15844 ops->create_sals_from_address = tracepoint_probe_create_sals_from_address;
15845 ops->decode_linespec = tracepoint_probe_decode_linespec;
15847 /* Static tracepoints with marker (`-m'). */
15848 ops = &strace_marker_breakpoint_ops;
15849 *ops = tracepoint_breakpoint_ops;
15850 ops->create_sals_from_address = strace_marker_create_sals_from_address;
15851 ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal;
15852 ops->decode_linespec = strace_marker_decode_linespec;
15854 /* Fork catchpoints. */
15855 ops = &catch_fork_breakpoint_ops;
15856 *ops = base_breakpoint_ops;
15857 ops->insert_location = insert_catch_fork;
15858 ops->remove_location = remove_catch_fork;
15859 ops->breakpoint_hit = breakpoint_hit_catch_fork;
15860 ops->print_it = print_it_catch_fork;
15861 ops->print_one = print_one_catch_fork;
15862 ops->print_mention = print_mention_catch_fork;
15863 ops->print_recreate = print_recreate_catch_fork;
15865 /* Vfork catchpoints. */
15866 ops = &catch_vfork_breakpoint_ops;
15867 *ops = base_breakpoint_ops;
15868 ops->insert_location = insert_catch_vfork;
15869 ops->remove_location = remove_catch_vfork;
15870 ops->breakpoint_hit = breakpoint_hit_catch_vfork;
15871 ops->print_it = print_it_catch_vfork;
15872 ops->print_one = print_one_catch_vfork;
15873 ops->print_mention = print_mention_catch_vfork;
15874 ops->print_recreate = print_recreate_catch_vfork;
15876 /* Exec catchpoints. */
15877 ops = &catch_exec_breakpoint_ops;
15878 *ops = base_breakpoint_ops;
15879 ops->dtor = dtor_catch_exec;
15880 ops->insert_location = insert_catch_exec;
15881 ops->remove_location = remove_catch_exec;
15882 ops->breakpoint_hit = breakpoint_hit_catch_exec;
15883 ops->print_it = print_it_catch_exec;
15884 ops->print_one = print_one_catch_exec;
15885 ops->print_mention = print_mention_catch_exec;
15886 ops->print_recreate = print_recreate_catch_exec;
15888 /* Syscall catchpoints. */
15889 ops = &catch_syscall_breakpoint_ops;
15890 *ops = base_breakpoint_ops;
15891 ops->dtor = dtor_catch_syscall;
15892 ops->insert_location = insert_catch_syscall;
15893 ops->remove_location = remove_catch_syscall;
15894 ops->breakpoint_hit = breakpoint_hit_catch_syscall;
15895 ops->print_it = print_it_catch_syscall;
15896 ops->print_one = print_one_catch_syscall;
15897 ops->print_mention = print_mention_catch_syscall;
15898 ops->print_recreate = print_recreate_catch_syscall;
15900 /* Solib-related catchpoints. */
15901 ops = &catch_solib_breakpoint_ops;
15902 *ops = base_breakpoint_ops;
15903 ops->dtor = dtor_catch_solib;
15904 ops->insert_location = insert_catch_solib;
15905 ops->remove_location = remove_catch_solib;
15906 ops->breakpoint_hit = breakpoint_hit_catch_solib;
15907 ops->check_status = check_status_catch_solib;
15908 ops->print_it = print_it_catch_solib;
15909 ops->print_one = print_one_catch_solib;
15910 ops->print_mention = print_mention_catch_solib;
15911 ops->print_recreate = print_recreate_catch_solib;
15913 ops = &dprintf_breakpoint_ops;
15914 *ops = bkpt_base_breakpoint_ops;
15915 ops->re_set = bkpt_re_set;
15916 ops->resources_needed = bkpt_resources_needed;
15917 ops->print_it = bkpt_print_it;
15918 ops->print_mention = bkpt_print_mention;
15919 ops->print_recreate = bkpt_print_recreate;
15922 /* Chain containing all defined "enable breakpoint" subcommands. */
15924 static struct cmd_list_element *enablebreaklist = NULL;
15927 _initialize_breakpoint (void)
15929 struct cmd_list_element *c;
15931 initialize_breakpoint_ops ();
15933 observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
15934 observer_attach_inferior_exit (clear_syscall_counts);
15935 observer_attach_memory_changed (invalidate_bp_value_on_memory_change);
15937 breakpoint_objfile_key
15938 = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes);
15940 catch_syscall_inferior_data
15941 = register_inferior_data_with_cleanup (NULL,
15942 catch_syscall_inferior_data_cleanup);
15944 breakpoint_chain = 0;
15945 /* Don't bother to call set_breakpoint_count. $bpnum isn't useful
15946 before a breakpoint is set. */
15947 breakpoint_count = 0;
15949 tracepoint_count = 0;
15951 add_com ("ignore", class_breakpoint, ignore_command, _("\
15952 Set ignore-count of breakpoint number N to COUNT.\n\
15953 Usage is `ignore N COUNT'."));
15955 add_com_alias ("bc", "ignore", class_breakpoint, 1);
15957 add_com ("commands", class_breakpoint, commands_command, _("\
15958 Set commands to be executed when a breakpoint is hit.\n\
15959 Give breakpoint number as argument after \"commands\".\n\
15960 With no argument, the targeted breakpoint is the last one set.\n\
15961 The commands themselves follow starting on the next line.\n\
15962 Type a line containing \"end\" to indicate the end of them.\n\
15963 Give \"silent\" as the first line to make the breakpoint silent;\n\
15964 then no output is printed when it is hit, except what the commands print."));
15966 c = add_com ("condition", class_breakpoint, condition_command, _("\
15967 Specify breakpoint number N to break only if COND is true.\n\
15968 Usage is `condition N COND', where N is an integer and COND is an\n\
15969 expression to be evaluated whenever breakpoint N is reached."));
15970 set_cmd_completer (c, condition_completer);
15972 c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\
15973 Set a temporary breakpoint.\n\
15974 Like \"break\" except the breakpoint is only temporary,\n\
15975 so it will be deleted when hit. Equivalent to \"break\" followed\n\
15976 by using \"enable delete\" on the breakpoint number.\n\
15978 BREAK_ARGS_HELP ("tbreak")));
15979 set_cmd_completer (c, location_completer);
15981 c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\
15982 Set a hardware assisted breakpoint.\n\
15983 Like \"break\" except the breakpoint requires hardware support,\n\
15984 some target hardware may not have this support.\n\
15986 BREAK_ARGS_HELP ("hbreak")));
15987 set_cmd_completer (c, location_completer);
15989 c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\
15990 Set a temporary hardware assisted breakpoint.\n\
15991 Like \"hbreak\" except the breakpoint is only temporary,\n\
15992 so it will be deleted when hit.\n\
15994 BREAK_ARGS_HELP ("thbreak")));
15995 set_cmd_completer (c, location_completer);
15997 add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\
15998 Enable some breakpoints.\n\
15999 Give breakpoint numbers (separated by spaces) as arguments.\n\
16000 With no subcommand, breakpoints are enabled until you command otherwise.\n\
16001 This is used to cancel the effect of the \"disable\" command.\n\
16002 With a subcommand you can enable temporarily."),
16003 &enablelist, "enable ", 1, &cmdlist);
16005 add_com ("ab", class_breakpoint, enable_command, _("\
16006 Enable some breakpoints.\n\
16007 Give breakpoint numbers (separated by spaces) as arguments.\n\
16008 With no subcommand, breakpoints are enabled until you command otherwise.\n\
16009 This is used to cancel the effect of the \"disable\" command.\n\
16010 With a subcommand you can enable temporarily."));
16012 add_com_alias ("en", "enable", class_breakpoint, 1);
16014 add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\
16015 Enable some breakpoints.\n\
16016 Give breakpoint numbers (separated by spaces) as arguments.\n\
16017 This is used to cancel the effect of the \"disable\" command.\n\
16018 May be abbreviated to simply \"enable\".\n"),
16019 &enablebreaklist, "enable breakpoints ", 1, &enablelist);
16021 add_cmd ("once", no_class, enable_once_command, _("\
16022 Enable breakpoints for one hit. Give breakpoint numbers.\n\
16023 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
16026 add_cmd ("delete", no_class, enable_delete_command, _("\
16027 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
16028 If a breakpoint is hit while enabled in this fashion, it is deleted."),
16031 add_cmd ("count", no_class, enable_count_command, _("\
16032 Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\
16033 If a breakpoint is hit while enabled in this fashion,\n\
16034 the count is decremented; when it reaches zero, the breakpoint is disabled."),
16037 add_cmd ("delete", no_class, enable_delete_command, _("\
16038 Enable breakpoints and delete when hit. Give breakpoint numbers.\n\
16039 If a breakpoint is hit while enabled in this fashion, it is deleted."),
16042 add_cmd ("once", no_class, enable_once_command, _("\
16043 Enable breakpoints for one hit. Give breakpoint numbers.\n\
16044 If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
16047 add_cmd ("count", no_class, enable_count_command, _("\
16048 Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\
16049 If a breakpoint is hit while enabled in this fashion,\n\
16050 the count is decremented; when it reaches zero, the breakpoint is disabled."),
16053 add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\
16054 Disable some breakpoints.\n\
16055 Arguments are breakpoint numbers with spaces in between.\n\
16056 To disable all breakpoints, give no argument.\n\
16057 A disabled breakpoint is not forgotten, but has no effect until re-enabled."),
16058 &disablelist, "disable ", 1, &cmdlist);
16059 add_com_alias ("dis", "disable", class_breakpoint, 1);
16060 add_com_alias ("disa", "disable", class_breakpoint, 1);
16062 add_com ("sb", class_breakpoint, disable_command, _("\
16063 Disable some breakpoints.\n\
16064 Arguments are breakpoint numbers with spaces in between.\n\
16065 To disable all breakpoints, give no argument.\n\
16066 A disabled breakpoint is not forgotten, but has no effect until re-enabled."));
16068 add_cmd ("breakpoints", class_alias, disable_command, _("\
16069 Disable some breakpoints.\n\
16070 Arguments are breakpoint numbers with spaces in between.\n\
16071 To disable all breakpoints, give no argument.\n\
16072 A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\
16073 This command may be abbreviated \"disable\"."),
16076 add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\
16077 Delete some breakpoints or auto-display expressions.\n\
16078 Arguments are breakpoint numbers with spaces in between.\n\
16079 To delete all breakpoints, give no argument.\n\
16081 Also a prefix command for deletion of other GDB objects.\n\
16082 The \"unset\" command is also an alias for \"delete\"."),
16083 &deletelist, "delete ", 1, &cmdlist);
16084 add_com_alias ("d", "delete", class_breakpoint, 1);
16085 add_com_alias ("del", "delete", class_breakpoint, 1);
16087 add_com ("db", class_breakpoint, delete_command, _("\
16088 Delete some breakpoints.\n\
16089 Arguments are breakpoint numbers with spaces in between.\n\
16090 To delete all breakpoints, give no argument.\n"));
16092 add_cmd ("breakpoints", class_alias, delete_command, _("\
16093 Delete some breakpoints or auto-display expressions.\n\
16094 Arguments are breakpoint numbers with spaces in between.\n\
16095 To delete all breakpoints, give no argument.\n\
16096 This command may be abbreviated \"delete\"."),
16099 add_com ("clear", class_breakpoint, clear_command, _("\
16100 Clear breakpoint at specified line or function.\n\
16101 Argument may be line number, function name, or \"*\" and an address.\n\
16102 If line number is specified, all breakpoints in that line are cleared.\n\
16103 If function is specified, breakpoints at beginning of function are cleared.\n\
16104 If an address is specified, breakpoints at that address are cleared.\n\
16106 With no argument, clears all breakpoints in the line that the selected frame\n\
16107 is executing in.\n\
16109 See also the \"delete\" command which clears breakpoints by number."));
16110 add_com_alias ("cl", "clear", class_breakpoint, 1);
16112 c = add_com ("break", class_breakpoint, break_command, _("\
16113 Set breakpoint at specified line or function.\n"
16114 BREAK_ARGS_HELP ("break")));
16115 set_cmd_completer (c, location_completer);
16117 add_com_alias ("b", "break", class_run, 1);
16118 add_com_alias ("br", "break", class_run, 1);
16119 add_com_alias ("bre", "break", class_run, 1);
16120 add_com_alias ("brea", "break", class_run, 1);
16123 add_com_alias ("ba", "break", class_breakpoint, 1);
16127 add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\
16128 Break in function/address or break at a line in the current file."),
16129 &stoplist, "stop ", 1, &cmdlist);
16130 add_cmd ("in", class_breakpoint, stopin_command,
16131 _("Break in function or address."), &stoplist);
16132 add_cmd ("at", class_breakpoint, stopat_command,
16133 _("Break at a line in the current file."), &stoplist);
16134 add_com ("status", class_info, breakpoints_info, _("\
16135 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
16136 The \"Type\" column indicates one of:\n\
16137 \tbreakpoint - normal breakpoint\n\
16138 \twatchpoint - watchpoint\n\
16139 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
16140 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
16141 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
16142 address and file/line number respectively.\n\
16144 Convenience variable \"$_\" and default examine address for \"x\"\n\
16145 are set to the address of the last breakpoint listed unless the command\n\
16146 is prefixed with \"server \".\n\n\
16147 Convenience variable \"$bpnum\" contains the number of the last\n\
16148 breakpoint set."));
16151 add_info ("breakpoints", breakpoints_info, _("\
16152 Status of specified breakpoints (all user-settable breakpoints if no argument).\n\
16153 The \"Type\" column indicates one of:\n\
16154 \tbreakpoint - normal breakpoint\n\
16155 \twatchpoint - watchpoint\n\
16156 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
16157 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
16158 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
16159 address and file/line number respectively.\n\
16161 Convenience variable \"$_\" and default examine address for \"x\"\n\
16162 are set to the address of the last breakpoint listed unless the command\n\
16163 is prefixed with \"server \".\n\n\
16164 Convenience variable \"$bpnum\" contains the number of the last\n\
16165 breakpoint set."));
16167 add_info_alias ("b", "breakpoints", 1);
16170 add_com ("lb", class_breakpoint, breakpoints_info, _("\
16171 Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
16172 The \"Type\" column indicates one of:\n\
16173 \tbreakpoint - normal breakpoint\n\
16174 \twatchpoint - watchpoint\n\
16175 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
16176 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
16177 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
16178 address and file/line number respectively.\n\
16180 Convenience variable \"$_\" and default examine address for \"x\"\n\
16181 are set to the address of the last breakpoint listed unless the command\n\
16182 is prefixed with \"server \".\n\n\
16183 Convenience variable \"$bpnum\" contains the number of the last\n\
16184 breakpoint set."));
16186 add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\
16187 Status of all breakpoints, or breakpoint number NUMBER.\n\
16188 The \"Type\" column indicates one of:\n\
16189 \tbreakpoint - normal breakpoint\n\
16190 \twatchpoint - watchpoint\n\
16191 \tlongjmp - internal breakpoint used to step through longjmp()\n\
16192 \tlongjmp resume - internal breakpoint at the target of longjmp()\n\
16193 \tuntil - internal breakpoint used by the \"until\" command\n\
16194 \tfinish - internal breakpoint used by the \"finish\" command\n\
16195 The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
16196 the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
16197 breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
16198 address and file/line number respectively.\n\
16200 Convenience variable \"$_\" and default examine address for \"x\"\n\
16201 are set to the address of the last breakpoint listed unless the command\n\
16202 is prefixed with \"server \".\n\n\
16203 Convenience variable \"$bpnum\" contains the number of the last\n\
16205 &maintenanceinfolist);
16207 add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\
16208 Set catchpoints to catch events."),
16209 &catch_cmdlist, "catch ",
16210 0/*allow-unknown*/, &cmdlist);
16212 add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\
16213 Set temporary catchpoints to catch events."),
16214 &tcatch_cmdlist, "tcatch ",
16215 0/*allow-unknown*/, &cmdlist);
16217 /* Add catch and tcatch sub-commands. */
16218 add_catch_command ("catch", _("\
16219 Catch an exception, when caught."),
16220 catch_catch_command,
16224 add_catch_command ("throw", _("\
16225 Catch an exception, when thrown."),
16226 catch_throw_command,
16230 add_catch_command ("fork", _("Catch calls to fork."),
16231 catch_fork_command_1,
16233 (void *) (uintptr_t) catch_fork_permanent,
16234 (void *) (uintptr_t) catch_fork_temporary);
16235 add_catch_command ("vfork", _("Catch calls to vfork."),
16236 catch_fork_command_1,
16238 (void *) (uintptr_t) catch_vfork_permanent,
16239 (void *) (uintptr_t) catch_vfork_temporary);
16240 add_catch_command ("exec", _("Catch calls to exec."),
16241 catch_exec_command_1,
16245 add_catch_command ("load", _("Catch loads of shared libraries.\n\
16246 Usage: catch load [REGEX]\n\
16247 If REGEX is given, only stop for libraries matching the regular expression."),
16248 catch_load_command_1,
16252 add_catch_command ("unload", _("Catch unloads of shared libraries.\n\
16253 Usage: catch unload [REGEX]\n\
16254 If REGEX is given, only stop for libraries matching the regular expression."),
16255 catch_unload_command_1,
16259 add_catch_command ("syscall", _("\
16260 Catch system calls by their names and/or numbers.\n\
16261 Arguments say which system calls to catch. If no arguments\n\
16262 are given, every system call will be caught.\n\
16263 Arguments, if given, should be one or more system call names\n\
16264 (if your system supports that), or system call numbers."),
16265 catch_syscall_command_1,
16266 catch_syscall_completer,
16270 c = add_com ("watch", class_breakpoint, watch_command, _("\
16271 Set a watchpoint for an expression.\n\
16272 Usage: watch [-l|-location] EXPRESSION\n\
16273 A watchpoint stops execution of your program whenever the value of\n\
16274 an expression changes.\n\
16275 If -l or -location is given, this evaluates EXPRESSION and watches\n\
16276 the memory to which it refers."));
16277 set_cmd_completer (c, expression_completer);
16279 c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\
16280 Set a read watchpoint for an expression.\n\
16281 Usage: rwatch [-l|-location] EXPRESSION\n\
16282 A watchpoint stops execution of your program whenever the value of\n\
16283 an expression is read.\n\
16284 If -l or -location is given, this evaluates EXPRESSION and watches\n\
16285 the memory to which it refers."));
16286 set_cmd_completer (c, expression_completer);
16288 c = add_com ("awatch", class_breakpoint, awatch_command, _("\
16289 Set a watchpoint for an expression.\n\
16290 Usage: awatch [-l|-location] EXPRESSION\n\
16291 A watchpoint stops execution of your program whenever the value of\n\
16292 an expression is either read or written.\n\
16293 If -l or -location is given, this evaluates EXPRESSION and watches\n\
16294 the memory to which it refers."));
16295 set_cmd_completer (c, expression_completer);
16297 add_info ("watchpoints", watchpoints_info, _("\
16298 Status of specified watchpoints (all watchpoints if no argument)."));
16300 /* XXX: cagney/2005-02-23: This should be a boolean, and should
16301 respond to changes - contrary to the description. */
16302 add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support,
16303 &can_use_hw_watchpoints, _("\
16304 Set debugger's willingness to use watchpoint hardware."), _("\
16305 Show debugger's willingness to use watchpoint hardware."), _("\
16306 If zero, gdb will not use hardware for new watchpoints, even if\n\
16307 such is available. (However, any hardware watchpoints that were\n\
16308 created before setting this to nonzero, will continue to use watchpoint\n\
16311 show_can_use_hw_watchpoints,
16312 &setlist, &showlist);
16314 can_use_hw_watchpoints = 1;
16316 /* Tracepoint manipulation commands. */
16318 c = add_com ("trace", class_breakpoint, trace_command, _("\
16319 Set a tracepoint at specified line or function.\n\
16321 BREAK_ARGS_HELP ("trace") "\n\
16322 Do \"help tracepoints\" for info on other tracepoint commands."));
16323 set_cmd_completer (c, location_completer);
16325 add_com_alias ("tp", "trace", class_alias, 0);
16326 add_com_alias ("tr", "trace", class_alias, 1);
16327 add_com_alias ("tra", "trace", class_alias, 1);
16328 add_com_alias ("trac", "trace", class_alias, 1);
16330 c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\
16331 Set a fast tracepoint at specified line or function.\n\
16333 BREAK_ARGS_HELP ("ftrace") "\n\
16334 Do \"help tracepoints\" for info on other tracepoint commands."));
16335 set_cmd_completer (c, location_completer);
16337 c = add_com ("strace", class_breakpoint, strace_command, _("\
16338 Set a static tracepoint at specified line, function or marker.\n\
16340 strace [LOCATION] [if CONDITION]\n\
16341 LOCATION may be a line number, function name, \"*\" and an address,\n\
16342 or -m MARKER_ID.\n\
16343 If a line number is specified, probe the marker at start of code\n\
16344 for that line. If a function is specified, probe the marker at start\n\
16345 of code for that function. If an address is specified, probe the marker\n\
16346 at that exact address. If a marker id is specified, probe the marker\n\
16347 with that name. With no LOCATION, uses current execution address of\n\
16348 the selected stack frame.\n\
16349 Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\
16350 This collects arbitrary user data passed in the probe point call to the\n\
16351 tracing library. You can inspect it when analyzing the trace buffer,\n\
16352 by printing the $_sdata variable like any other convenience variable.\n\
16354 CONDITION is a boolean expression.\n\
16356 Multiple tracepoints at one place are permitted, and useful if their\n\
16357 conditions are different.\n\
16359 Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\
16360 Do \"help tracepoints\" for info on other tracepoint commands."));
16361 set_cmd_completer (c, location_completer);
16363 add_info ("tracepoints", tracepoints_info, _("\
16364 Status of specified tracepoints (all tracepoints if no argument).\n\
16365 Convenience variable \"$tpnum\" contains the number of the\n\
16366 last tracepoint set."));
16368 add_info_alias ("tp", "tracepoints", 1);
16370 add_cmd ("tracepoints", class_trace, delete_trace_command, _("\
16371 Delete specified tracepoints.\n\
16372 Arguments are tracepoint numbers, separated by spaces.\n\
16373 No argument means delete all tracepoints."),
16375 add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist);
16377 c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\
16378 Disable specified tracepoints.\n\
16379 Arguments are tracepoint numbers, separated by spaces.\n\
16380 No argument means disable all tracepoints."),
16382 deprecate_cmd (c, "disable");
16384 c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\
16385 Enable specified tracepoints.\n\
16386 Arguments are tracepoint numbers, separated by spaces.\n\
16387 No argument means enable all tracepoints."),
16389 deprecate_cmd (c, "enable");
16391 add_com ("passcount", class_trace, trace_pass_command, _("\
16392 Set the passcount for a tracepoint.\n\
16393 The trace will end when the tracepoint has been passed 'count' times.\n\
16394 Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\
16395 if TPNUM is omitted, passcount refers to the last tracepoint defined."));
16397 add_prefix_cmd ("save", class_breakpoint, save_command,
16398 _("Save breakpoint definitions as a script."),
16399 &save_cmdlist, "save ",
16400 0/*allow-unknown*/, &cmdlist);
16402 c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\
16403 Save current breakpoint definitions as a script.\n\
16404 This includes all types of breakpoints (breakpoints, watchpoints,\n\
16405 catchpoints, tracepoints). Use the 'source' command in another debug\n\
16406 session to restore them."),
16408 set_cmd_completer (c, filename_completer);
16410 c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\
16411 Save current tracepoint definitions as a script.\n\
16412 Use the 'source' command in another debug session to restore them."),
16414 set_cmd_completer (c, filename_completer);
16416 c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0);
16417 deprecate_cmd (c, "save tracepoints");
16419 add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\
16420 Breakpoint specific settings\n\
16421 Configure various breakpoint-specific variables such as\n\
16422 pending breakpoint behavior"),
16423 &breakpoint_set_cmdlist, "set breakpoint ",
16424 0/*allow-unknown*/, &setlist);
16425 add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\
16426 Breakpoint specific settings\n\
16427 Configure various breakpoint-specific variables such as\n\
16428 pending breakpoint behavior"),
16429 &breakpoint_show_cmdlist, "show breakpoint ",
16430 0/*allow-unknown*/, &showlist);
16432 add_setshow_auto_boolean_cmd ("pending", no_class,
16433 &pending_break_support, _("\
16434 Set debugger's behavior regarding pending breakpoints."), _("\
16435 Show debugger's behavior regarding pending breakpoints."), _("\
16436 If on, an unrecognized breakpoint location will cause gdb to create a\n\
16437 pending breakpoint. If off, an unrecognized breakpoint location results in\n\
16438 an error. If auto, an unrecognized breakpoint location results in a\n\
16439 user-query to see if a pending breakpoint should be created."),
16441 show_pending_break_support,
16442 &breakpoint_set_cmdlist,
16443 &breakpoint_show_cmdlist);
16445 pending_break_support = AUTO_BOOLEAN_AUTO;
16447 add_setshow_boolean_cmd ("auto-hw", no_class,
16448 &automatic_hardware_breakpoints, _("\
16449 Set automatic usage of hardware breakpoints."), _("\
16450 Show automatic usage of hardware breakpoints."), _("\
16451 If set, the debugger will automatically use hardware breakpoints for\n\
16452 breakpoints set with \"break\" but falling in read-only memory. If not set,\n\
16453 a warning will be emitted for such breakpoints."),
16455 show_automatic_hardware_breakpoints,
16456 &breakpoint_set_cmdlist,
16457 &breakpoint_show_cmdlist);
16459 add_setshow_auto_boolean_cmd ("always-inserted", class_support,
16460 &always_inserted_mode, _("\
16461 Set mode for inserting breakpoints."), _("\
16462 Show mode for inserting breakpoints."), _("\
16463 When this mode is off, breakpoints are inserted in inferior when it is\n\
16464 resumed, and removed when execution stops. When this mode is on,\n\
16465 breakpoints are inserted immediately and removed only when the user\n\
16466 deletes the breakpoint. When this mode is auto (which is the default),\n\
16467 the behaviour depends on the non-stop setting (see help set non-stop).\n\
16468 In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\
16469 behaves as if always-inserted mode is on; if gdb is controlling the\n\
16470 inferior in all-stop mode, gdb behaves as if always-inserted mode is off."),
16472 &show_always_inserted_mode,
16473 &breakpoint_set_cmdlist,
16474 &breakpoint_show_cmdlist);
16476 add_setshow_enum_cmd ("condition-evaluation", class_breakpoint,
16477 condition_evaluation_enums,
16478 &condition_evaluation_mode_1, _("\
16479 Set mode of breakpoint condition evaluation."), _("\
16480 Show mode of breakpoint condition evaluation."), _("\
16481 When this is set to \"host\", breakpoint conditions will be\n\
16482 evaluated on the host's side by GDB. When it is set to \"target\",\n\
16483 breakpoint conditions will be downloaded to the target (if the target\n\
16484 supports such feature) and conditions will be evaluated on the target's side.\n\
16485 If this is set to \"auto\" (default), this will be automatically set to\n\
16486 \"target\" if it supports condition evaluation, otherwise it will\n\
16487 be set to \"gdb\""),
16488 &set_condition_evaluation_mode,
16489 &show_condition_evaluation_mode,
16490 &breakpoint_set_cmdlist,
16491 &breakpoint_show_cmdlist);
16493 add_com ("break-range", class_breakpoint, break_range_command, _("\
16494 Set a breakpoint for an address range.\n\
16495 break-range START-LOCATION, END-LOCATION\n\
16496 where START-LOCATION and END-LOCATION can be one of the following:\n\
16497 LINENUM, for that line in the current file,\n\
16498 FILE:LINENUM, for that line in that file,\n\
16499 +OFFSET, for that number of lines after the current line\n\
16500 or the start of the range\n\
16501 FUNCTION, for the first line in that function,\n\
16502 FILE:FUNCTION, to distinguish among like-named static functions.\n\
16503 *ADDRESS, for the instruction at that address.\n\
16505 The breakpoint will stop execution of the inferior whenever it executes\n\
16506 an instruction at any address within the [START-LOCATION, END-LOCATION]\n\
16507 range (including START-LOCATION and END-LOCATION)."));
16509 c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\
16510 Set a dynamic printf at specified line or function.\n\
16511 dprintf location,format string,arg1,arg2,...\n\
16512 location may be a line number, function name, or \"*\" and an address.\n\
16513 If a line number is specified, break at start of code for that line.\n\
16514 If a function is specified, break at start of code for that function.\n\
16516 set_cmd_completer (c, location_completer);
16518 add_setshow_enum_cmd ("dprintf-style", class_support,
16519 dprintf_style_enums, &dprintf_style, _("\
16520 Set the style of usage for dynamic printf."), _("\
16521 Show the style of usage for dynamic printf."), _("\
16522 This setting chooses how GDB will do a dynamic printf.\n\
16523 If the value is \"gdb\", then the printing is done by GDB to its own\n\
16524 console, as with the \"printf\" command.\n\
16525 If the value is \"call\", the print is done by calling a function in your\n\
16526 program; by default printf(), but you can choose a different function or\n\
16527 output stream by setting dprintf-function and dprintf-channel."),
16528 update_dprintf_commands, NULL,
16529 &setlist, &showlist);
16531 dprintf_function = xstrdup ("printf");
16532 add_setshow_string_cmd ("dprintf-function", class_support,
16533 &dprintf_function, _("\
16534 Set the function to use for dynamic printf"), _("\
16535 Show the function to use for dynamic printf"), NULL,
16536 update_dprintf_commands, NULL,
16537 &setlist, &showlist);
16539 dprintf_channel = xstrdup ("");
16540 add_setshow_string_cmd ("dprintf-channel", class_support,
16541 &dprintf_channel, _("\
16542 Set the channel to use for dynamic printf"), _("\
16543 Show the channel to use for dynamic printf"), NULL,
16544 update_dprintf_commands, NULL,
16545 &setlist, &showlist);
16547 add_setshow_boolean_cmd ("disconnected-dprintf", no_class,
16548 &disconnected_dprintf, _("\
16549 Set whether dprintf continues after GDB disconnects."), _("\
16550 Show whether dprintf continues after GDB disconnects."), _("\
16551 Use this to let dprintf commands continue to hit and produce output\n\
16552 even if GDB disconnects or detaches from the target."),
16555 &setlist, &showlist);
16557 add_com ("agent-printf", class_vars, agent_printf_command, _("\
16558 agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
16559 (target agent only) This is useful for formatted output in user-defined commands."));
16561 automatic_hardware_breakpoints = 1;
16563 observer_attach_about_to_proceed (breakpoint_about_to_proceed);